diff options
| author |   José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-05-18 13:18:31 +0300 |
|---|---|---|
| committer | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-05-18 13:42:15 +0300 |
| commit | 437fd90c0250dee670290f9b714253671a990160 (patch) | |
| tree | b871786c360704244a07411c69fb58da9ead4a06 /qemu/disas/libvixl | |
| parent | 5bbd6fe9b8bab2a93e548c5a53b032d1939eec05 (diff) | |
These changes are the raw update to qemu-2.6.
Collission happened in the following patches:
migration: do cleanup operation after completion(738df5b9)
Bug fix.(1750c932f86)
kvmclock: add a new function to update env->tsc.(b52baab2)
The code provided by the patches was already in the upstreamed
version.
Change-Id: I3cc11841a6a76ae20887b2e245710199e1ea7f9a
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'qemu/disas/libvixl')
23 files changed, 11995 insertions, 5188 deletions
diff --git a/qemu/disas/libvixl/Makefile.objs b/qemu/disas/libvixl/Makefile.objs index 17e6565d1..bbe7695fd 100644 --- a/qemu/disas/libvixl/Makefile.objs +++ b/qemu/disas/libvixl/Makefile.objs @@ -1,8 +1,11 @@ -libvixl_OBJS = utils.o \ - a64/instructions-a64.o \ - a64/decoder-a64.o \ - a64/disasm-a64.o +libvixl_OBJS = vixl/utils.o \ + vixl/compiler-intrinsics.o \ + vixl/a64/instructions-a64.o \ + vixl/a64/decoder-a64.o \ + vixl/a64/disasm-a64.o -$(addprefix $(obj)/,$(libvixl_OBJS)): QEMU_CFLAGS := -I$(SRC_PATH)/disas/libvixl $(QEMU_CFLAGS) +# The -Wno-sign-compare is needed only for gcc 4.6, which complains about +# some signed-unsigned equality comparisons which later gcc versions do not. +$(addprefix $(obj)/,$(libvixl_OBJS)): QEMU_CFLAGS := -I$(SRC_PATH)/disas/libvixl $(QEMU_CFLAGS) -Wno-sign-compare common-obj-$(CONFIG_ARM_A64_DIS) += $(libvixl_OBJS) diff --git a/qemu/disas/libvixl/README b/qemu/disas/libvixl/README index 58db41c67..932a41adf 100644 --- a/qemu/disas/libvixl/README +++ b/qemu/disas/libvixl/README @@ -2,11 +2,10 @@ The code in this directory is a subset of libvixl: https://github.com/armvixl/vixl (specifically, it is the set of files needed for disassembly only, -taken from libvixl 1.7). +taken from libvixl 1.12). Bugfixes should preferably be sent upstream initially. The disassembler does not currently support the entire A64 instruction set. Notably: - * No Advanced SIMD support. * Limited support for system instructions. * A few miscellaneous integer and floating point instructions are missing. diff --git a/qemu/disas/libvixl/a64/assembler-a64.h b/qemu/disas/libvixl/a64/assembler-a64.h deleted file mode 100644 index 35aaf20f7..000000000 --- a/qemu/disas/libvixl/a64/assembler-a64.h +++ /dev/null @@ -1,2353 +0,0 @@ -// Copyright 2013, ARM Limited -// All rights reserved. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are met: -// -// * Redistributions of source code must retain the above copyright notice, -// this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above copyright notice, -// this list of conditions and the following disclaimer in the documentation -// and/or other materials provided with the distribution. -// * Neither the name of ARM Limited nor the names of its contributors may be -// used to endorse or promote products derived from this software without -// specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND -// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED -// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE -// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE -// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL -// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR -// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER -// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, -// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -#ifndef VIXL_A64_ASSEMBLER_A64_H_ -#define VIXL_A64_ASSEMBLER_A64_H_ - -#include <list> -#include <stack> - -#include "globals.h" -#include "utils.h" -#include "code-buffer.h" -#include "a64/instructions-a64.h" - -namespace vixl { - -typedef uint64_t RegList; -static const int kRegListSizeInBits = sizeof(RegList) * 8; - - -// Registers. - -// Some CPURegister methods can return Register and FPRegister types, so we -// need to declare them in advance. -class Register; -class FPRegister; - - -class CPURegister { - public: - enum RegisterType { - // The kInvalid value is used to detect uninitialized static instances, - // which are always zero-initialized before any constructors are called. - kInvalid = 0, - kRegister, - kFPRegister, - kNoRegister - }; - - CPURegister() : code_(0), size_(0), type_(kNoRegister) { - VIXL_ASSERT(!IsValid()); - VIXL_ASSERT(IsNone()); - } - - CPURegister(unsigned code, unsigned size, RegisterType type) - : code_(code), size_(size), type_(type) { - VIXL_ASSERT(IsValidOrNone()); - } - - unsigned code() const { - VIXL_ASSERT(IsValid()); - return code_; - } - - RegisterType type() const { - VIXL_ASSERT(IsValidOrNone()); - return type_; - } - - RegList Bit() const { - VIXL_ASSERT(code_ < (sizeof(RegList) * 8)); - return IsValid() ? (static_cast<RegList>(1) << code_) : 0; - } - - unsigned size() const { - VIXL_ASSERT(IsValid()); - return size_; - } - - int SizeInBytes() const { - VIXL_ASSERT(IsValid()); - VIXL_ASSERT(size() % 8 == 0); - return size_ / 8; - } - - int SizeInBits() const { - VIXL_ASSERT(IsValid()); - return size_; - } - - bool Is32Bits() const { - VIXL_ASSERT(IsValid()); - return size_ == 32; - } - - bool Is64Bits() const { - VIXL_ASSERT(IsValid()); - return size_ == 64; - } - - bool IsValid() const { - if (IsValidRegister() || IsValidFPRegister()) { - VIXL_ASSERT(!IsNone()); - return true; - } else { - VIXL_ASSERT(IsNone()); - return false; - } - } - - bool IsValidRegister() const { - return IsRegister() && - ((size_ == kWRegSize) || (size_ == kXRegSize)) && - ((code_ < kNumberOfRegisters) || (code_ == kSPRegInternalCode)); - } - - bool IsValidFPRegister() const { - return IsFPRegister() && - ((size_ == kSRegSize) || (size_ == kDRegSize)) && - (code_ < kNumberOfFPRegisters); - } - - bool IsNone() const { - // kNoRegister types should always have size 0 and code 0. - VIXL_ASSERT((type_ != kNoRegister) || (code_ == 0)); - VIXL_ASSERT((type_ != kNoRegister) || (size_ == 0)); - - return type_ == kNoRegister; - } - - bool Aliases(const CPURegister& other) const { - VIXL_ASSERT(IsValidOrNone() && other.IsValidOrNone()); - return (code_ == other.code_) && (type_ == other.type_); - } - - bool Is(const CPURegister& other) const { - VIXL_ASSERT(IsValidOrNone() && other.IsValidOrNone()); - return Aliases(other) && (size_ == other.size_); - } - - bool IsZero() const { - VIXL_ASSERT(IsValid()); - return IsRegister() && (code_ == kZeroRegCode); - } - - bool IsSP() const { - VIXL_ASSERT(IsValid()); - return IsRegister() && (code_ == kSPRegInternalCode); - } - - bool IsRegister() const { - return type_ == kRegister; - } - - bool IsFPRegister() const { - return type_ == kFPRegister; - } - - bool IsW() const { return IsValidRegister() && Is32Bits(); } - bool IsX() const { return IsValidRegister() && Is64Bits(); } - bool IsS() const { return IsValidFPRegister() && Is32Bits(); } - bool IsD() const { return IsValidFPRegister() && Is64Bits(); } - - const Register& W() const; - const Register& X() const; - const FPRegister& S() const; - const FPRegister& D() const; - - bool IsSameSizeAndType(const CPURegister& other) const { - return (size_ == other.size_) && (type_ == other.type_); - } - - protected: - unsigned code_; - unsigned size_; - RegisterType type_; - - private: - bool IsValidOrNone() const { - return IsValid() || IsNone(); - } -}; - - -class Register : public CPURegister { - public: - Register() : CPURegister() {} - explicit Register(const CPURegister& other) - : CPURegister(other.code(), other.size(), other.type()) { - VIXL_ASSERT(IsValidRegister()); - } - Register(unsigned code, unsigned size) - : CPURegister(code, size, kRegister) {} - - bool IsValid() const { - VIXL_ASSERT(IsRegister() || IsNone()); - return IsValidRegister(); - } - - static const Register& WRegFromCode(unsigned code); - static const Register& XRegFromCode(unsigned code); - - private: - static const Register wregisters[]; - static const Register xregisters[]; -}; - - -class FPRegister : public CPURegister { - public: - FPRegister() : CPURegister() {} - explicit FPRegister(const CPURegister& other) - : CPURegister(other.code(), other.size(), other.type()) { - VIXL_ASSERT(IsValidFPRegister()); - } - FPRegister(unsigned code, unsigned size) - : CPURegister(code, size, kFPRegister) {} - - bool IsValid() const { - VIXL_ASSERT(IsFPRegister() || IsNone()); - return IsValidFPRegister(); - } - - static const FPRegister& SRegFromCode(unsigned code); - static const FPRegister& DRegFromCode(unsigned code); - - private: - static const FPRegister sregisters[]; - static const FPRegister dregisters[]; -}; - - -// No*Reg is used to indicate an unused argument, or an error case. Note that -// these all compare equal (using the Is() method). The Register and FPRegister -// variants are provided for convenience. -const Register NoReg; -const FPRegister NoFPReg; -const CPURegister NoCPUReg; - - -#define DEFINE_REGISTERS(N) \ -const Register w##N(N, kWRegSize); \ -const Register x##N(N, kXRegSize); -REGISTER_CODE_LIST(DEFINE_REGISTERS) -#undef DEFINE_REGISTERS -const Register wsp(kSPRegInternalCode, kWRegSize); -const Register sp(kSPRegInternalCode, kXRegSize); - - -#define DEFINE_FPREGISTERS(N) \ -const FPRegister s##N(N, kSRegSize); \ -const FPRegister d##N(N, kDRegSize); -REGISTER_CODE_LIST(DEFINE_FPREGISTERS) -#undef DEFINE_FPREGISTERS - - -// Registers aliases. -const Register ip0 = x16; -const Register ip1 = x17; -const Register lr = x30; -const Register xzr = x31; -const Register wzr = w31; - - -// AreAliased returns true if any of the named registers overlap. Arguments -// set to NoReg are ignored. The system stack pointer may be specified. -bool AreAliased(const CPURegister& reg1, - const CPURegister& reg2, - const CPURegister& reg3 = NoReg, - const CPURegister& reg4 = NoReg, - const CPURegister& reg5 = NoReg, - const CPURegister& reg6 = NoReg, - const CPURegister& reg7 = NoReg, - const CPURegister& reg8 = NoReg); - - -// AreSameSizeAndType returns true if all of the specified registers have the -// same size, and are of the same type. The system stack pointer may be -// specified. Arguments set to NoReg are ignored, as are any subsequent -// arguments. At least one argument (reg1) must be valid (not NoCPUReg). -bool AreSameSizeAndType(const CPURegister& reg1, - const CPURegister& reg2, - const CPURegister& reg3 = NoCPUReg, - const CPURegister& reg4 = NoCPUReg, - const CPURegister& reg5 = NoCPUReg, - const CPURegister& reg6 = NoCPUReg, - const CPURegister& reg7 = NoCPUReg, - const CPURegister& reg8 = NoCPUReg); - - -// Lists of registers. -class CPURegList { - public: - explicit CPURegList(CPURegister reg1, - CPURegister reg2 = NoCPUReg, - CPURegister reg3 = NoCPUReg, - CPURegister reg4 = NoCPUReg) - : list_(reg1.Bit() | reg2.Bit() | reg3.Bit() | reg4.Bit()), - size_(reg1.size()), type_(reg1.type()) { - VIXL_ASSERT(AreSameSizeAndType(reg1, reg2, reg3, reg4)); - VIXL_ASSERT(IsValid()); - } - - CPURegList(CPURegister::RegisterType type, unsigned size, RegList list) - : list_(list), size_(size), type_(type) { - VIXL_ASSERT(IsValid()); - } - - CPURegList(CPURegister::RegisterType type, unsigned size, - unsigned first_reg, unsigned last_reg) - : size_(size), type_(type) { - VIXL_ASSERT(((type == CPURegister::kRegister) && - (last_reg < kNumberOfRegisters)) || - ((type == CPURegister::kFPRegister) && - (last_reg < kNumberOfFPRegisters))); - VIXL_ASSERT(last_reg >= first_reg); - list_ = (UINT64_C(1) << (last_reg + 1)) - 1; - list_ &= ~((UINT64_C(1) << first_reg) - 1); - VIXL_ASSERT(IsValid()); - } - - CPURegister::RegisterType type() const { - VIXL_ASSERT(IsValid()); - return type_; - } - - // Combine another CPURegList into this one. Registers that already exist in - // this list are left unchanged. The type and size of the registers in the - // 'other' list must match those in this list. - void Combine(const CPURegList& other) { - VIXL_ASSERT(IsValid()); - VIXL_ASSERT(other.type() == type_); - VIXL_ASSERT(other.RegisterSizeInBits() == size_); - list_ |= other.list(); - } - - // Remove every register in the other CPURegList from this one. Registers that - // do not exist in this list are ignored. The type and size of the registers - // in the 'other' list must match those in this list. - void Remove(const CPURegList& other) { - VIXL_ASSERT(IsValid()); - VIXL_ASSERT(other.type() == type_); - VIXL_ASSERT(other.RegisterSizeInBits() == size_); - list_ &= ~other.list(); - } - - // Variants of Combine and Remove which take a single register. - void Combine(const CPURegister& other) { - VIXL_ASSERT(other.type() == type_); - VIXL_ASSERT(other.size() == size_); - Combine(other.code()); - } - - void Remove(const CPURegister& other) { - VIXL_ASSERT(other.type() == type_); - VIXL_ASSERT(other.size() == size_); - Remove(other.code()); - } - - // Variants of Combine and Remove which take a single register by its code; - // the type and size of the register is inferred from this list. - void Combine(int code) { - VIXL_ASSERT(IsValid()); - VIXL_ASSERT(CPURegister(code, size_, type_).IsValid()); - list_ |= (UINT64_C(1) << code); - } - - void Remove(int code) { - VIXL_ASSERT(IsValid()); - VIXL_ASSERT(CPURegister(code, size_, type_).IsValid()); - list_ &= ~(UINT64_C(1) << code); - } - - static CPURegList Union(const CPURegList& list_1, const CPURegList& list_2) { - VIXL_ASSERT(list_1.type_ == list_2.type_); - VIXL_ASSERT(list_1.size_ == list_2.size_); - return CPURegList(list_1.type_, list_1.size_, list_1.list_ | list_2.list_); - } - static CPURegList Union(const CPURegList& list_1, - const CPURegList& list_2, - const CPURegList& list_3); - static CPURegList Union(const CPURegList& list_1, - const CPURegList& list_2, - const CPURegList& list_3, - const CPURegList& list_4); - - static CPURegList Intersection(const CPURegList& list_1, - const CPURegList& list_2) { - VIXL_ASSERT(list_1.type_ == list_2.type_); - VIXL_ASSERT(list_1.size_ == list_2.size_); - return CPURegList(list_1.type_, list_1.size_, list_1.list_ & list_2.list_); - } - static CPURegList Intersection(const CPURegList& list_1, - const CPURegList& list_2, - const CPURegList& list_3); - static CPURegList Intersection(const CPURegList& list_1, - const CPURegList& list_2, - const CPURegList& list_3, - const CPURegList& list_4); - - RegList list() const { - VIXL_ASSERT(IsValid()); - return list_; - } - - void set_list(RegList new_list) { - VIXL_ASSERT(IsValid()); - list_ = new_list; - } - - // Remove all callee-saved registers from the list. This can be useful when - // preparing registers for an AAPCS64 function call, for example. - void RemoveCalleeSaved(); - - CPURegister PopLowestIndex(); - CPURegister PopHighestIndex(); - - // AAPCS64 callee-saved registers. - static CPURegList GetCalleeSaved(unsigned size = kXRegSize); - static CPURegList GetCalleeSavedFP(unsigned size = kDRegSize); - - // AAPCS64 caller-saved registers. Note that this includes lr. - static CPURegList GetCallerSaved(unsigned size = kXRegSize); - static CPURegList GetCallerSavedFP(unsigned size = kDRegSize); - - bool IsEmpty() const { - VIXL_ASSERT(IsValid()); - return list_ == 0; - } - - bool IncludesAliasOf(const CPURegister& other) const { - VIXL_ASSERT(IsValid()); - return (type_ == other.type()) && ((other.Bit() & list_) != 0); - } - - bool IncludesAliasOf(int code) const { - VIXL_ASSERT(IsValid()); - return ((code & list_) != 0); - } - - int Count() const { - VIXL_ASSERT(IsValid()); - return CountSetBits(list_, kRegListSizeInBits); - } - - unsigned RegisterSizeInBits() const { - VIXL_ASSERT(IsValid()); - return size_; - } - - unsigned RegisterSizeInBytes() const { - int size_in_bits = RegisterSizeInBits(); - VIXL_ASSERT((size_in_bits % 8) == 0); - return size_in_bits / 8; - } - - unsigned TotalSizeInBytes() const { - VIXL_ASSERT(IsValid()); - return RegisterSizeInBytes() * Count(); - } - - private: - RegList list_; - unsigned size_; - CPURegister::RegisterType type_; - - bool IsValid() const; -}; - - -// AAPCS64 callee-saved registers. -extern const CPURegList kCalleeSaved; -extern const CPURegList kCalleeSavedFP; - - -// AAPCS64 caller-saved registers. Note that this includes lr. -extern const CPURegList kCallerSaved; -extern const CPURegList kCallerSavedFP; - - -// Operand. -class Operand { - public: - // #<immediate> - // where <immediate> is int64_t. - // This is allowed to be an implicit constructor because Operand is - // a wrapper class that doesn't normally perform any type conversion. - Operand(int64_t immediate); // NOLINT(runtime/explicit) - - // rm, {<shift> #<shift_amount>} - // where <shift> is one of {LSL, LSR, ASR, ROR}. - // <shift_amount> is uint6_t. - // This is allowed to be an implicit constructor because Operand is - // a wrapper class that doesn't normally perform any type conversion. - Operand(Register reg, - Shift shift = LSL, - unsigned shift_amount = 0); // NOLINT(runtime/explicit) - - // rm, {<extend> {#<shift_amount>}} - // where <extend> is one of {UXTB, UXTH, UXTW, UXTX, SXTB, SXTH, SXTW, SXTX}. - // <shift_amount> is uint2_t. - explicit Operand(Register reg, Extend extend, unsigned shift_amount = 0); - - bool IsImmediate() const; - bool IsShiftedRegister() const; - bool IsExtendedRegister() const; - bool IsZero() const; - - // This returns an LSL shift (<= 4) operand as an equivalent extend operand, - // which helps in the encoding of instructions that use the stack pointer. - Operand ToExtendedRegister() const; - - int64_t immediate() const { - VIXL_ASSERT(IsImmediate()); - return immediate_; - } - - Register reg() const { - VIXL_ASSERT(IsShiftedRegister() || IsExtendedRegister()); - return reg_; - } - - Shift shift() const { - VIXL_ASSERT(IsShiftedRegister()); - return shift_; - } - - Extend extend() const { - VIXL_ASSERT(IsExtendedRegister()); - return extend_; - } - - unsigned shift_amount() const { - VIXL_ASSERT(IsShiftedRegister() || IsExtendedRegister()); - return shift_amount_; - } - - private: - int64_t immediate_; - Register reg_; - Shift shift_; - Extend extend_; - unsigned shift_amount_; -}; - - -// MemOperand represents the addressing mode of a load or store instruction. -class MemOperand { - public: - explicit MemOperand(Register base, - int64_t offset = 0, - AddrMode addrmode = Offset); - explicit MemOperand(Register base, - Register regoffset, - Shift shift = LSL, - unsigned shift_amount = 0); - explicit MemOperand(Register base, - Register regoffset, - Extend extend, - unsigned shift_amount = 0); - explicit MemOperand(Register base, - const Operand& offset, - AddrMode addrmode = Offset); - - const Register& base() const { return base_; } - const Register& regoffset() const { return regoffset_; } - int64_t offset() const { return offset_; } - AddrMode addrmode() const { return addrmode_; } - Shift shift() const { return shift_; } - Extend extend() const { return extend_; } - unsigned shift_amount() const { return shift_amount_; } - bool IsImmediateOffset() const; - bool IsRegisterOffset() const; - bool IsPreIndex() const; - bool IsPostIndex() const; - - private: - Register base_; - Register regoffset_; - int64_t offset_; - AddrMode addrmode_; - Shift shift_; - Extend extend_; - unsigned shift_amount_; -}; - - -class Label { - public: - Label() : location_(kLocationUnbound) {} - ~Label() { - // If the label has been linked to, it needs to be bound to a target. - VIXL_ASSERT(!IsLinked() || IsBound()); - } - - bool IsBound() const { return location_ >= 0; } - bool IsLinked() const { return !links_.empty(); } - - ptrdiff_t location() const { return location_; } - - private: - // The list of linked instructions is stored in a stack-like structure. We - // don't use std::stack directly because it's slow for the common case where - // only one or two instructions refer to a label, and labels themselves are - // short-lived. This class behaves like std::stack, but the first few links - // are preallocated (configured by kPreallocatedLinks). - // - // If more than N links are required, this falls back to std::stack. - class LinksStack { - public: - LinksStack() : size_(0), links_extended_(NULL) {} - ~LinksStack() { - delete links_extended_; - } - - size_t size() const { - return size_; - } - - bool empty() const { - return size_ == 0; - } - - void push(ptrdiff_t value) { - if (size_ < kPreallocatedLinks) { - links_[size_] = value; - } else { - if (links_extended_ == NULL) { - links_extended_ = new std::stack<ptrdiff_t>(); - } - VIXL_ASSERT(size_ == (links_extended_->size() + kPreallocatedLinks)); - links_extended_->push(value); - } - size_++; - } - - ptrdiff_t top() const { - return (size_ <= kPreallocatedLinks) ? links_[size_ - 1] - : links_extended_->top(); - } - - void pop() { - size_--; - if (size_ >= kPreallocatedLinks) { - links_extended_->pop(); - VIXL_ASSERT(size_ == (links_extended_->size() + kPreallocatedLinks)); - } - } - - private: - static const size_t kPreallocatedLinks = 4; - - size_t size_; - ptrdiff_t links_[kPreallocatedLinks]; - std::stack<ptrdiff_t> * links_extended_; - }; - - void Bind(ptrdiff_t location) { - // Labels can only be bound once. - VIXL_ASSERT(!IsBound()); - location_ = location; - } - - void AddLink(ptrdiff_t instruction) { - // If a label is bound, the assembler already has the information it needs - // to write the instruction, so there is no need to add it to links_. - VIXL_ASSERT(!IsBound()); - links_.push(instruction); - } - - ptrdiff_t GetAndRemoveNextLink() { - VIXL_ASSERT(IsLinked()); - ptrdiff_t link = links_.top(); - links_.pop(); - return link; - } - - // The offsets of the instructions that have linked to this label. - LinksStack links_; - // The label location. - ptrdiff_t location_; - - static const ptrdiff_t kLocationUnbound = -1; - - // It is not safe to copy labels, so disable the copy constructor by declaring - // it private (without an implementation). - Label(const Label&); - - // The Assembler class is responsible for binding and linking labels, since - // the stored offsets need to be consistent with the Assembler's buffer. - friend class Assembler; -}; - - -// A literal is a 32-bit or 64-bit piece of data stored in the instruction -// stream and loaded through a pc relative load. The same literal can be -// referred to by multiple instructions but a literal can only reside at one -// place in memory. A literal can be used by a load before or after being -// placed in memory. -// -// Internally an offset of 0 is associated with a literal which has been -// neither used nor placed. Then two possibilities arise: -// 1) the label is placed, the offset (stored as offset + 1) is used to -// resolve any subsequent load using the label. -// 2) the label is not placed and offset is the offset of the last load using -// the literal (stored as -offset -1). If multiple loads refer to this -// literal then the last load holds the offset of the preceding load and -// all loads form a chain. Once the offset is placed all the loads in the -// chain are resolved and future loads fall back to possibility 1. -class RawLiteral { - public: - RawLiteral() : size_(0), offset_(0), raw_value_(0) {} - - size_t size() { - VIXL_STATIC_ASSERT(kDRegSizeInBytes == kXRegSizeInBytes); - VIXL_STATIC_ASSERT(kSRegSizeInBytes == kWRegSizeInBytes); - VIXL_ASSERT((size_ == kXRegSizeInBytes) || (size_ == kWRegSizeInBytes)); - return size_; - } - uint64_t raw_value64() { - VIXL_ASSERT(size_ == kXRegSizeInBytes); - return raw_value_; - } - uint32_t raw_value32() { - VIXL_ASSERT(size_ == kWRegSizeInBytes); - VIXL_ASSERT(is_uint32(raw_value_) || is_int32(raw_value_)); - return static_cast<uint32_t>(raw_value_); - } - bool IsUsed() { return offset_ < 0; } - bool IsPlaced() { return offset_ > 0; } - - protected: - ptrdiff_t offset() { - VIXL_ASSERT(IsPlaced()); - return offset_ - 1; - } - void set_offset(ptrdiff_t offset) { - VIXL_ASSERT(offset >= 0); - VIXL_ASSERT(IsWordAligned(offset)); - VIXL_ASSERT(!IsPlaced()); - offset_ = offset + 1; - } - ptrdiff_t last_use() { - VIXL_ASSERT(IsUsed()); - return -offset_ - 1; - } - void set_last_use(ptrdiff_t offset) { - VIXL_ASSERT(offset >= 0); - VIXL_ASSERT(IsWordAligned(offset)); - VIXL_ASSERT(!IsPlaced()); - offset_ = -offset - 1; - } - - size_t size_; - ptrdiff_t offset_; - uint64_t raw_value_; - - friend class Assembler; -}; - - -template <typename T> -class Literal : public RawLiteral { - public: - explicit Literal(T value) { - size_ = sizeof(value); - memcpy(&raw_value_, &value, sizeof(value)); - } -}; - - -// Control whether or not position-independent code should be emitted. -enum PositionIndependentCodeOption { - // All code generated will be position-independent; all branches and - // references to labels generated with the Label class will use PC-relative - // addressing. - PositionIndependentCode, - - // Allow VIXL to generate code that refers to absolute addresses. With this - // option, it will not be possible to copy the code buffer and run it from a - // different address; code must be generated in its final location. - PositionDependentCode, - - // Allow VIXL to assume that the bottom 12 bits of the address will be - // constant, but that the top 48 bits may change. This allows `adrp` to - // function in systems which copy code between pages, but otherwise maintain - // 4KB page alignment. - PageOffsetDependentCode -}; - - -// Control how scaled- and unscaled-offset loads and stores are generated. -enum LoadStoreScalingOption { - // Prefer scaled-immediate-offset instructions, but emit unscaled-offset, - // register-offset, pre-index or post-index instructions if necessary. - PreferScaledOffset, - - // Prefer unscaled-immediate-offset instructions, but emit scaled-offset, - // register-offset, pre-index or post-index instructions if necessary. - PreferUnscaledOffset, - - // Require scaled-immediate-offset instructions. - RequireScaledOffset, - - // Require unscaled-immediate-offset instructions. - RequireUnscaledOffset -}; - - -// Assembler. -class Assembler { - public: - Assembler(size_t capacity, - PositionIndependentCodeOption pic = PositionIndependentCode); - Assembler(byte* buffer, size_t capacity, - PositionIndependentCodeOption pic = PositionIndependentCode); - - // The destructor asserts that one of the following is true: - // * The Assembler object has not been used. - // * Nothing has been emitted since the last Reset() call. - // * Nothing has been emitted since the last FinalizeCode() call. - ~Assembler(); - - // System functions. - - // Start generating code from the beginning of the buffer, discarding any code - // and data that has already been emitted into the buffer. - void Reset(); - - // Finalize a code buffer of generated instructions. This function must be - // called before executing or copying code from the buffer. - void FinalizeCode(); - - // Label. - // Bind a label to the current PC. - void bind(Label* label); - - // Bind a label to a specified offset from the start of the buffer. - void BindToOffset(Label* label, ptrdiff_t offset); - - // Place a literal at the current PC. - void place(RawLiteral* literal); - - ptrdiff_t CursorOffset() const { - return buffer_->CursorOffset(); - } - - ptrdiff_t BufferEndOffset() const { - return static_cast<ptrdiff_t>(buffer_->capacity()); - } - - // Return the address of an offset in the buffer. - template <typename T> - T GetOffsetAddress(ptrdiff_t offset) { - VIXL_STATIC_ASSERT(sizeof(T) >= sizeof(uintptr_t)); - return buffer_->GetOffsetAddress<T>(offset); - } - - // Return the address of a bound label. - template <typename T> - T GetLabelAddress(const Label * label) { - VIXL_ASSERT(label->IsBound()); - VIXL_STATIC_ASSERT(sizeof(T) >= sizeof(uintptr_t)); - return GetOffsetAddress<T>(label->location()); - } - - // Return the address of the cursor. - template <typename T> - T GetCursorAddress() { - VIXL_STATIC_ASSERT(sizeof(T) >= sizeof(uintptr_t)); - return GetOffsetAddress<T>(CursorOffset()); - } - - // Return the address of the start of the buffer. - template <typename T> - T GetStartAddress() { - VIXL_STATIC_ASSERT(sizeof(T) >= sizeof(uintptr_t)); - return GetOffsetAddress<T>(0); - } - - // Instruction set functions. - - // Branch / Jump instructions. - // Branch to register. - void br(const Register& xn); - - // Branch with link to register. - void blr(const Register& xn); - - // Branch to register with return hint. - void ret(const Register& xn = lr); - - // Unconditional branch to label. - void b(Label* label); - - // Conditional branch to label. - void b(Label* label, Condition cond); - - // Unconditional branch to PC offset. - void b(int imm26); - - // Conditional branch to PC offset. - void b(int imm19, Condition cond); - - // Branch with link to label. - void bl(Label* label); - - // Branch with link to PC offset. - void bl(int imm26); - - // Compare and branch to label if zero. - void cbz(const Register& rt, Label* label); - - // Compare and branch to PC offset if zero. - void cbz(const Register& rt, int imm19); - - // Compare and branch to label if not zero. - void cbnz(const Register& rt, Label* label); - - // Compare and branch to PC offset if not zero. - void cbnz(const Register& rt, int imm19); - - // Test bit and branch to label if zero. - void tbz(const Register& rt, unsigned bit_pos, Label* label); - - // Test bit and branch to PC offset if zero. - void tbz(const Register& rt, unsigned bit_pos, int imm14); - - // Test bit and branch to label if not zero. - void tbnz(const Register& rt, unsigned bit_pos, Label* label); - - // Test bit and branch to PC offset if not zero. - void tbnz(const Register& rt, unsigned bit_pos, int imm14); - - // Address calculation instructions. - // Calculate a PC-relative address. Unlike for branches the offset in adr is - // unscaled (i.e. the result can be unaligned). - - // Calculate the address of a label. - void adr(const Register& rd, Label* label); - - // Calculate the address of a PC offset. - void adr(const Register& rd, int imm21); - - // Calculate the page address of a label. - void adrp(const Register& rd, Label* label); - - // Calculate the page address of a PC offset. - void adrp(const Register& rd, int imm21); - - // Data Processing instructions. - // Add. - void add(const Register& rd, - const Register& rn, - const Operand& operand); - - // Add and update status flags. - void adds(const Register& rd, - const Register& rn, - const Operand& operand); - - // Compare negative. - void cmn(const Register& rn, const Operand& operand); - - // Subtract. - void sub(const Register& rd, - const Register& rn, - const Operand& operand); - - // Subtract and update status flags. - void subs(const Register& rd, - const Register& rn, - const Operand& operand); - - // Compare. - void cmp(const Register& rn, const Operand& operand); - - // Negate. - void neg(const Register& rd, - const Operand& operand); - - // Negate and update status flags. - void negs(const Register& rd, - const Operand& operand); - - // Add with carry bit. - void adc(const Register& rd, - const Register& rn, - const Operand& operand); - - // Add with carry bit and update status flags. - void adcs(const Register& rd, - const Register& rn, - const Operand& operand); - - // Subtract with carry bit. - void sbc(const Register& rd, - const Register& rn, - const Operand& operand); - - // Subtract with carry bit and update status flags. - void sbcs(const Register& rd, - const Register& rn, - const Operand& operand); - - // Negate with carry bit. - void ngc(const Register& rd, - const Operand& operand); - - // Negate with carry bit and update status flags. - void ngcs(const Register& rd, - const Operand& operand); - - // Logical instructions. - // Bitwise and (A & B). - void and_(const Register& rd, - const Register& rn, - const Operand& operand); - - // Bitwise and (A & B) and update status flags. - void ands(const Register& rd, - const Register& rn, - const Operand& operand); - - // Bit test and set flags. - void tst(const Register& rn, const Operand& operand); - - // Bit clear (A & ~B). - void bic(const Register& rd, - const Register& rn, - const Operand& operand); - - // Bit clear (A & ~B) and update status flags. - void bics(const Register& rd, - const Register& rn, - const Operand& operand); - - // Bitwise or (A | B). - void orr(const Register& rd, const Register& rn, const Operand& operand); - - // Bitwise nor (A | ~B). - void orn(const Register& rd, const Register& rn, const Operand& operand); - - // Bitwise eor/xor (A ^ B). - void eor(const Register& rd, const Register& rn, const Operand& operand); - - // Bitwise enor/xnor (A ^ ~B). - void eon(const Register& rd, const Register& rn, const Operand& operand); - - // Logical shift left by variable. - void lslv(const Register& rd, const Register& rn, const Register& rm); - - // Logical shift right by variable. - void lsrv(const Register& rd, const Register& rn, const Register& rm); - - // Arithmetic shift right by variable. - void asrv(const Register& rd, const Register& rn, const Register& rm); - - // Rotate right by variable. - void rorv(const Register& rd, const Register& rn, const Register& rm); - - // Bitfield instructions. - // Bitfield move. - void bfm(const Register& rd, - const Register& rn, - unsigned immr, - unsigned imms); - - // Signed bitfield move. - void sbfm(const Register& rd, - const Register& rn, - unsigned immr, - unsigned imms); - - // Unsigned bitfield move. - void ubfm(const Register& rd, - const Register& rn, - unsigned immr, - unsigned imms); - - // Bfm aliases. - // Bitfield insert. - void bfi(const Register& rd, - const Register& rn, - unsigned lsb, - unsigned width) { - VIXL_ASSERT(width >= 1); - VIXL_ASSERT(lsb + width <= rn.size()); - bfm(rd, rn, (rd.size() - lsb) & (rd.size() - 1), width - 1); - } - - // Bitfield extract and insert low. - void bfxil(const Register& rd, - const Register& rn, - unsigned lsb, - unsigned width) { - VIXL_ASSERT(width >= 1); - VIXL_ASSERT(lsb + width <= rn.size()); - bfm(rd, rn, lsb, lsb + width - 1); - } - - // Sbfm aliases. - // Arithmetic shift right. - void asr(const Register& rd, const Register& rn, unsigned shift) { - VIXL_ASSERT(shift < rd.size()); - sbfm(rd, rn, shift, rd.size() - 1); - } - - // Signed bitfield insert with zero at right. - void sbfiz(const Register& rd, - const Register& rn, - unsigned lsb, - unsigned width) { - VIXL_ASSERT(width >= 1); - VIXL_ASSERT(lsb + width <= rn.size()); - sbfm(rd, rn, (rd.size() - lsb) & (rd.size() - 1), width - 1); - } - - // Signed bitfield extract. - void sbfx(const Register& rd, - const Register& rn, - unsigned lsb, - unsigned width) { - VIXL_ASSERT(width >= 1); - VIXL_ASSERT(lsb + width <= rn.size()); - sbfm(rd, rn, lsb, lsb + width - 1); - } - - // Signed extend byte. - void sxtb(const Register& rd, const Register& rn) { - sbfm(rd, rn, 0, 7); - } - - // Signed extend halfword. - void sxth(const Register& rd, const Register& rn) { - sbfm(rd, rn, 0, 15); - } - - // Signed extend word. - void sxtw(const Register& rd, const Register& rn) { - sbfm(rd, rn, 0, 31); - } - - // Ubfm aliases. - // Logical shift left. - void lsl(const Register& rd, const Register& rn, unsigned shift) { - unsigned reg_size = rd.size(); - VIXL_ASSERT(shift < reg_size); - ubfm(rd, rn, (reg_size - shift) % reg_size, reg_size - shift - 1); - } - - // Logical shift right. - void lsr(const Register& rd, const Register& rn, unsigned shift) { - VIXL_ASSERT(shift < rd.size()); - ubfm(rd, rn, shift, rd.size() - 1); - } - - // Unsigned bitfield insert with zero at right. - void ubfiz(const Register& rd, - const Register& rn, - unsigned lsb, - unsigned width) { - VIXL_ASSERT(width >= 1); - VIXL_ASSERT(lsb + width <= rn.size()); - ubfm(rd, rn, (rd.size() - lsb) & (rd.size() - 1), width - 1); - } - - // Unsigned bitfield extract. - void ubfx(const Register& rd, - const Register& rn, - unsigned lsb, - unsigned width) { - VIXL_ASSERT(width >= 1); - VIXL_ASSERT(lsb + width <= rn.size()); - ubfm(rd, rn, lsb, lsb + width - 1); - } - - // Unsigned extend byte. - void uxtb(const Register& rd, const Register& rn) { - ubfm(rd, rn, 0, 7); - } - - // Unsigned extend halfword. - void uxth(const Register& rd, const Register& rn) { - ubfm(rd, rn, 0, 15); - } - - // Unsigned extend word. - void uxtw(const Register& rd, const Register& rn) { - ubfm(rd, rn, 0, 31); - } - - // Extract. - void extr(const Register& rd, - const Register& rn, - const Register& rm, - unsigned lsb); - - // Conditional select: rd = cond ? rn : rm. - void csel(const Register& rd, - const Register& rn, - const Register& rm, - Condition cond); - - // Conditional select increment: rd = cond ? rn : rm + 1. - void csinc(const Register& rd, - const Register& rn, - const Register& rm, - Condition cond); - - // Conditional select inversion: rd = cond ? rn : ~rm. - void csinv(const Register& rd, - const Register& rn, - const Register& rm, - Condition cond); - - // Conditional select negation: rd = cond ? rn : -rm. - void csneg(const Register& rd, - const Register& rn, - const Register& rm, - Condition cond); - - // Conditional set: rd = cond ? 1 : 0. - void cset(const Register& rd, Condition cond); - - // Conditional set mask: rd = cond ? -1 : 0. - void csetm(const Register& rd, Condition cond); - - // Conditional increment: rd = cond ? rn + 1 : rn. - void cinc(const Register& rd, const Register& rn, Condition cond); - - // Conditional invert: rd = cond ? ~rn : rn. - void cinv(const Register& rd, const Register& rn, Condition cond); - - // Conditional negate: rd = cond ? -rn : rn. - void cneg(const Register& rd, const Register& rn, Condition cond); - - // Rotate right. - void ror(const Register& rd, const Register& rs, unsigned shift) { - extr(rd, rs, rs, shift); - } - - // Conditional comparison. - // Conditional compare negative. - void ccmn(const Register& rn, - const Operand& operand, - StatusFlags nzcv, - Condition cond); - - // Conditional compare. - void ccmp(const Register& rn, - const Operand& operand, - StatusFlags nzcv, - Condition cond); - - // Multiply. - void mul(const Register& rd, const Register& rn, const Register& rm); - - // Negated multiply. - void mneg(const Register& rd, const Register& rn, const Register& rm); - - // Signed long multiply: 32 x 32 -> 64-bit. - void smull(const Register& rd, const Register& rn, const Register& rm); - - // Signed multiply high: 64 x 64 -> 64-bit <127:64>. - void smulh(const Register& xd, const Register& xn, const Register& xm); - - // Multiply and accumulate. - void madd(const Register& rd, - const Register& rn, - const Register& rm, - const Register& ra); - - // Multiply and subtract. - void msub(const Register& rd, - const Register& rn, - const Register& rm, - const Register& ra); - - // Signed long multiply and accumulate: 32 x 32 + 64 -> 64-bit. - void smaddl(const Register& rd, - const Register& rn, - const Register& rm, - const Register& ra); - - // Unsigned long multiply and accumulate: 32 x 32 + 64 -> 64-bit. - void umaddl(const Register& rd, - const Register& rn, - const Register& rm, - const Register& ra); - - // Signed long multiply and subtract: 64 - (32 x 32) -> 64-bit. - void smsubl(const Register& rd, - const Register& rn, - const Register& rm, - const Register& ra); - - // Unsigned long multiply and subtract: 64 - (32 x 32) -> 64-bit. - void umsubl(const Register& rd, - const Register& rn, - const Register& rm, - const Register& ra); - - // Signed integer divide. - void sdiv(const Register& rd, const Register& rn, const Register& rm); - - // Unsigned integer divide. - void udiv(const Register& rd, const Register& rn, const Register& rm); - - // Bit reverse. - void rbit(const Register& rd, const Register& rn); - - // Reverse bytes in 16-bit half words. - void rev16(const Register& rd, const Register& rn); - - // Reverse bytes in 32-bit words. - void rev32(const Register& rd, const Register& rn); - - // Reverse bytes. - void rev(const Register& rd, const Register& rn); - - // Count leading zeroes. - void clz(const Register& rd, const Register& rn); - - // Count leading sign bits. - void cls(const Register& rd, const Register& rn); - - // Memory instructions. - // Load integer or FP register. - void ldr(const CPURegister& rt, const MemOperand& src, - LoadStoreScalingOption option = PreferScaledOffset); - - // Store integer or FP register. - void str(const CPURegister& rt, const MemOperand& dst, - LoadStoreScalingOption option = PreferScaledOffset); - - // Load word with sign extension. - void ldrsw(const Register& rt, const MemOperand& src, - LoadStoreScalingOption option = PreferScaledOffset); - - // Load byte. - void ldrb(const Register& rt, const MemOperand& src, - LoadStoreScalingOption option = PreferScaledOffset); - - // Store byte. - void strb(const Register& rt, const MemOperand& dst, - LoadStoreScalingOption option = PreferScaledOffset); - - // Load byte with sign extension. - void ldrsb(const Register& rt, const MemOperand& src, - LoadStoreScalingOption option = PreferScaledOffset); - - // Load half-word. - void ldrh(const Register& rt, const MemOperand& src, - LoadStoreScalingOption option = PreferScaledOffset); - - // Store half-word. - void strh(const Register& rt, const MemOperand& dst, - LoadStoreScalingOption option = PreferScaledOffset); - - // Load half-word with sign extension. - void ldrsh(const Register& rt, const MemOperand& src, - LoadStoreScalingOption option = PreferScaledOffset); - - // Load integer or FP register (with unscaled offset). - void ldur(const CPURegister& rt, const MemOperand& src, - LoadStoreScalingOption option = PreferUnscaledOffset); - - // Store integer or FP register (with unscaled offset). - void stur(const CPURegister& rt, const MemOperand& src, - LoadStoreScalingOption option = PreferUnscaledOffset); - - // Load word with sign extension. - void ldursw(const Register& rt, const MemOperand& src, - LoadStoreScalingOption option = PreferUnscaledOffset); - - // Load byte (with unscaled offset). - void ldurb(const Register& rt, const MemOperand& src, - LoadStoreScalingOption option = PreferUnscaledOffset); - - // Store byte (with unscaled offset). - void sturb(const Register& rt, const MemOperand& dst, - LoadStoreScalingOption option = PreferUnscaledOffset); - - // Load byte with sign extension (and unscaled offset). - void ldursb(const Register& rt, const MemOperand& src, - LoadStoreScalingOption option = PreferUnscaledOffset); - - // Load half-word (with unscaled offset). - void ldurh(const Register& rt, const MemOperand& src, - LoadStoreScalingOption option = PreferUnscaledOffset); - - // Store half-word (with unscaled offset). - void sturh(const Register& rt, const MemOperand& dst, - LoadStoreScalingOption option = PreferUnscaledOffset); - - // Load half-word with sign extension (and unscaled offset). - void ldursh(const Register& rt, const MemOperand& src, - LoadStoreScalingOption option = PreferUnscaledOffset); - - // Load integer or FP register pair. - void ldp(const CPURegister& rt, const CPURegister& rt2, - const MemOperand& src); - - // Store integer or FP register pair. - void stp(const CPURegister& rt, const CPURegister& rt2, - const MemOperand& dst); - - // Load word pair with sign extension. - void ldpsw(const Register& rt, const Register& rt2, const MemOperand& src); - - // Load integer or FP register pair, non-temporal. - void ldnp(const CPURegister& rt, const CPURegister& rt2, - const MemOperand& src); - - // Store integer or FP register pair, non-temporal. - void stnp(const CPURegister& rt, const CPURegister& rt2, - const MemOperand& dst); - - // Load integer or FP register from literal pool. - void ldr(const CPURegister& rt, RawLiteral* literal); - - // Load word with sign extension from literal pool. - void ldrsw(const Register& rt, RawLiteral* literal); - - // Load integer or FP register from pc + imm19 << 2. - void ldr(const CPURegister& rt, int imm19); - - // Load word with sign extension from pc + imm19 << 2. - void ldrsw(const Register& rt, int imm19); - - // Store exclusive byte. - void stxrb(const Register& rs, const Register& rt, const MemOperand& dst); - - // Store exclusive half-word. - void stxrh(const Register& rs, const Register& rt, const MemOperand& dst); - - // Store exclusive register. - void stxr(const Register& rs, const Register& rt, const MemOperand& dst); - - // Load exclusive byte. - void ldxrb(const Register& rt, const MemOperand& src); - - // Load exclusive half-word. - void ldxrh(const Register& rt, const MemOperand& src); - - // Load exclusive register. - void ldxr(const Register& rt, const MemOperand& src); - - // Store exclusive register pair. - void stxp(const Register& rs, - const Register& rt, - const Register& rt2, - const MemOperand& dst); - - // Load exclusive register pair. - void ldxp(const Register& rt, const Register& rt2, const MemOperand& src); - - // Store-release exclusive byte. - void stlxrb(const Register& rs, const Register& rt, const MemOperand& dst); - - // Store-release exclusive half-word. - void stlxrh(const Register& rs, const Register& rt, const MemOperand& dst); - - // Store-release exclusive register. - void stlxr(const Register& rs, const Register& rt, const MemOperand& dst); - - // Load-acquire exclusive byte. - void ldaxrb(const Register& rt, const MemOperand& src); - - // Load-acquire exclusive half-word. - void ldaxrh(const Register& rt, const MemOperand& src); - - // Load-acquire exclusive register. - void ldaxr(const Register& rt, const MemOperand& src); - - // Store-release exclusive register pair. - void stlxp(const Register& rs, - const Register& rt, - const Register& rt2, - const MemOperand& dst); - - // Load-acquire exclusive register pair. - void ldaxp(const Register& rt, const Register& rt2, const MemOperand& src); - - // Store-release byte. - void stlrb(const Register& rt, const MemOperand& dst); - - // Store-release half-word. - void stlrh(const Register& rt, const MemOperand& dst); - - // Store-release register. - void stlr(const Register& rt, const MemOperand& dst); - - // Load-acquire byte. - void ldarb(const Register& rt, const MemOperand& src); - - // Load-acquire half-word. - void ldarh(const Register& rt, const MemOperand& src); - - // Load-acquire register. - void ldar(const Register& rt, const MemOperand& src); - - // Prefetch memory. - void prfm(PrefetchOperation op, const MemOperand& addr, - LoadStoreScalingOption option = PreferScaledOffset); - - // Prefetch memory (with unscaled offset). - void prfum(PrefetchOperation op, const MemOperand& addr, - LoadStoreScalingOption option = PreferUnscaledOffset); - - // Prefetch memory in the literal pool. - void prfm(PrefetchOperation op, RawLiteral* literal); - - // Prefetch from pc + imm19 << 2. - void prfm(PrefetchOperation op, int imm19); - - // Move instructions. The default shift of -1 indicates that the move - // instruction will calculate an appropriate 16-bit immediate and left shift - // that is equal to the 64-bit immediate argument. If an explicit left shift - // is specified (0, 16, 32 or 48), the immediate must be a 16-bit value. - // - // For movk, an explicit shift can be used to indicate which half word should - // be overwritten, eg. movk(x0, 0, 0) will overwrite the least-significant - // half word with zero, whereas movk(x0, 0, 48) will overwrite the - // most-significant. - - // Move immediate and keep. - void movk(const Register& rd, uint64_t imm, int shift = -1) { - MoveWide(rd, imm, shift, MOVK); - } - - // Move inverted immediate. - void movn(const Register& rd, uint64_t imm, int shift = -1) { - MoveWide(rd, imm, shift, MOVN); - } - - // Move immediate. - void movz(const Register& rd, uint64_t imm, int shift = -1) { - MoveWide(rd, imm, shift, MOVZ); - } - - // Misc instructions. - // Monitor debug-mode breakpoint. - void brk(int code); - - // Halting debug-mode breakpoint. - void hlt(int code); - - // Move register to register. - void mov(const Register& rd, const Register& rn); - - // Move inverted operand to register. - void mvn(const Register& rd, const Operand& operand); - - // System instructions. - // Move to register from system register. - void mrs(const Register& rt, SystemRegister sysreg); - - // Move from register to system register. - void msr(SystemRegister sysreg, const Register& rt); - - // System hint. - void hint(SystemHint code); - - // Clear exclusive monitor. - void clrex(int imm4 = 0xf); - - // Data memory barrier. - void dmb(BarrierDomain domain, BarrierType type); - - // Data synchronization barrier. - void dsb(BarrierDomain domain, BarrierType type); - - // Instruction synchronization barrier. - void isb(); - - // Alias for system instructions. - // No-op. - void nop() { - hint(NOP); - } - - // FP instructions. - // Move double precision immediate to FP register. - void fmov(const FPRegister& fd, double imm); - - // Move single precision immediate to FP register. - void fmov(const FPRegister& fd, float imm); - - // Move FP register to register. - void fmov(const Register& rd, const FPRegister& fn); - - // Move register to FP register. - void fmov(const FPRegister& fd, const Register& rn); - - // Move FP register to FP register. - void fmov(const FPRegister& fd, const FPRegister& fn); - - // FP add. - void fadd(const FPRegister& fd, const FPRegister& fn, const FPRegister& fm); - - // FP subtract. - void fsub(const FPRegister& fd, const FPRegister& fn, const FPRegister& fm); - - // FP multiply. - void fmul(const FPRegister& fd, const FPRegister& fn, const FPRegister& fm); - - // FP fused multiply and add. - void fmadd(const FPRegister& fd, - const FPRegister& fn, - const FPRegister& fm, - const FPRegister& fa); - - // FP fused multiply and subtract. - void fmsub(const FPRegister& fd, - const FPRegister& fn, - const FPRegister& fm, - const FPRegister& fa); - - // FP fused multiply, add and negate. - void fnmadd(const FPRegister& fd, - const FPRegister& fn, - const FPRegister& fm, - const FPRegister& fa); - - // FP fused multiply, subtract and negate. - void fnmsub(const FPRegister& fd, - const FPRegister& fn, - const FPRegister& fm, - const FPRegister& fa); - - // FP divide. - void fdiv(const FPRegister& fd, const FPRegister& fn, const FPRegister& fm); - - // FP maximum. - void fmax(const FPRegister& fd, const FPRegister& fn, const FPRegister& fm); - - // FP minimum. - void fmin(const FPRegister& fd, const FPRegister& fn, const FPRegister& fm); - - // FP maximum number. - void fmaxnm(const FPRegister& fd, const FPRegister& fn, const FPRegister& fm); - - // FP minimum number. - void fminnm(const FPRegister& fd, const FPRegister& fn, const FPRegister& fm); - - // FP absolute. - void fabs(const FPRegister& fd, const FPRegister& fn); - - // FP negate. - void fneg(const FPRegister& fd, const FPRegister& fn); - - // FP square root. - void fsqrt(const FPRegister& fd, const FPRegister& fn); - - // FP round to integer (nearest with ties to away). - void frinta(const FPRegister& fd, const FPRegister& fn); - - // FP round to integer (implicit rounding). - void frinti(const FPRegister& fd, const FPRegister& fn); - - // FP round to integer (toward minus infinity). - void frintm(const FPRegister& fd, const FPRegister& fn); - - // FP round to integer (nearest with ties to even). - void frintn(const FPRegister& fd, const FPRegister& fn); - - // FP round to integer (toward plus infinity). - void frintp(const FPRegister& fd, const FPRegister& fn); - - // FP round to integer (exact, implicit rounding). - void frintx(const FPRegister& fd, const FPRegister& fn); - - // FP round to integer (towards zero). - void frintz(const FPRegister& fd, const FPRegister& fn); - - // FP compare registers. - void fcmp(const FPRegister& fn, const FPRegister& fm); - - // FP compare immediate. - void fcmp(const FPRegister& fn, double value); - - // FP conditional compare. - void fccmp(const FPRegister& fn, - const FPRegister& fm, - StatusFlags nzcv, - Condition cond); - - // FP conditional select. - void fcsel(const FPRegister& fd, - const FPRegister& fn, - const FPRegister& fm, - Condition cond); - - // Common FP Convert function. - void FPConvertToInt(const Register& rd, - const FPRegister& fn, - FPIntegerConvertOp op); - - // FP convert between single and double precision. - void fcvt(const FPRegister& fd, const FPRegister& fn); - - // Convert FP to signed integer (nearest with ties to away). - void fcvtas(const Register& rd, const FPRegister& fn); - - // Convert FP to unsigned integer (nearest with ties to away). - void fcvtau(const Register& rd, const FPRegister& fn); - - // Convert FP to signed integer (round towards -infinity). - void fcvtms(const Register& rd, const FPRegister& fn); - - // Convert FP to unsigned integer (round towards -infinity). - void fcvtmu(const Register& rd, const FPRegister& fn); - - // Convert FP to signed integer (nearest with ties to even). - void fcvtns(const Register& rd, const FPRegister& fn); - - // Convert FP to unsigned integer (nearest with ties to even). - void fcvtnu(const Register& rd, const FPRegister& fn); - - // Convert FP to signed integer (round towards zero). - void fcvtzs(const Register& rd, const FPRegister& fn); - - // Convert FP to unsigned integer (round towards zero). - void fcvtzu(const Register& rd, const FPRegister& fn); - - // Convert signed integer or fixed point to FP. - void scvtf(const FPRegister& fd, const Register& rn, unsigned fbits = 0); - - // Convert unsigned integer or fixed point to FP. - void ucvtf(const FPRegister& fd, const Register& rn, unsigned fbits = 0); - - // Emit generic instructions. - // Emit raw instructions into the instruction stream. - void dci(Instr raw_inst) { Emit(raw_inst); } - - // Emit 32 bits of data into the instruction stream. - void dc32(uint32_t data) { - VIXL_ASSERT(buffer_monitor_ > 0); - buffer_->Emit32(data); - } - - // Emit 64 bits of data into the instruction stream. - void dc64(uint64_t data) { - VIXL_ASSERT(buffer_monitor_ > 0); - buffer_->Emit64(data); - } - - // Copy a string into the instruction stream, including the terminating NULL - // character. The instruction pointer is then aligned correctly for - // subsequent instructions. - void EmitString(const char * string) { - VIXL_ASSERT(string != NULL); - VIXL_ASSERT(buffer_monitor_ > 0); - - buffer_->EmitString(string); - buffer_->Align(); - } - - // Code generation helpers. - - // Register encoding. - static Instr Rd(CPURegister rd) { - VIXL_ASSERT(rd.code() != kSPRegInternalCode); - return rd.code() << Rd_offset; - } - - static Instr Rn(CPURegister rn) { - VIXL_ASSERT(rn.code() != kSPRegInternalCode); - return rn.code() << Rn_offset; - } - - static Instr Rm(CPURegister rm) { - VIXL_ASSERT(rm.code() != kSPRegInternalCode); - return rm.code() << Rm_offset; - } - - static Instr Ra(CPURegister ra) { - VIXL_ASSERT(ra.code() != kSPRegInternalCode); - return ra.code() << Ra_offset; - } - - static Instr Rt(CPURegister rt) { - VIXL_ASSERT(rt.code() != kSPRegInternalCode); - return rt.code() << Rt_offset; - } - - static Instr Rt2(CPURegister rt2) { - VIXL_ASSERT(rt2.code() != kSPRegInternalCode); - return rt2.code() << Rt2_offset; - } - - static Instr Rs(CPURegister rs) { - VIXL_ASSERT(rs.code() != kSPRegInternalCode); - return rs.code() << Rs_offset; - } - - // These encoding functions allow the stack pointer to be encoded, and - // disallow the zero register. - static Instr RdSP(Register rd) { - VIXL_ASSERT(!rd.IsZero()); - return (rd.code() & kRegCodeMask) << Rd_offset; - } - - static Instr RnSP(Register rn) { - VIXL_ASSERT(!rn.IsZero()); - return (rn.code() & kRegCodeMask) << Rn_offset; - } - - // Flags encoding. - static Instr Flags(FlagsUpdate S) { - if (S == SetFlags) { - return 1 << FlagsUpdate_offset; - } else if (S == LeaveFlags) { - return 0 << FlagsUpdate_offset; - } - VIXL_UNREACHABLE(); - return 0; - } - - static Instr Cond(Condition cond) { - return cond << Condition_offset; - } - - // PC-relative address encoding. - static Instr ImmPCRelAddress(int imm21) { - VIXL_ASSERT(is_int21(imm21)); - Instr imm = static_cast<Instr>(truncate_to_int21(imm21)); - Instr immhi = (imm >> ImmPCRelLo_width) << ImmPCRelHi_offset; - Instr immlo = imm << ImmPCRelLo_offset; - return (immhi & ImmPCRelHi_mask) | (immlo & ImmPCRelLo_mask); - } - - // Branch encoding. - static Instr ImmUncondBranch(int imm26) { - VIXL_ASSERT(is_int26(imm26)); - return truncate_to_int26(imm26) << ImmUncondBranch_offset; - } - - static Instr ImmCondBranch(int imm19) { - VIXL_ASSERT(is_int19(imm19)); - return truncate_to_int19(imm19) << ImmCondBranch_offset; - } - - static Instr ImmCmpBranch(int imm19) { - VIXL_ASSERT(is_int19(imm19)); - return truncate_to_int19(imm19) << ImmCmpBranch_offset; - } - - static Instr ImmTestBranch(int imm14) { - VIXL_ASSERT(is_int14(imm14)); - return truncate_to_int14(imm14) << ImmTestBranch_offset; - } - - static Instr ImmTestBranchBit(unsigned bit_pos) { - VIXL_ASSERT(is_uint6(bit_pos)); - // Subtract five from the shift offset, as we need bit 5 from bit_pos. - unsigned b5 = bit_pos << (ImmTestBranchBit5_offset - 5); - unsigned b40 = bit_pos << ImmTestBranchBit40_offset; - b5 &= ImmTestBranchBit5_mask; - b40 &= ImmTestBranchBit40_mask; - return b5 | b40; - } - - // Data Processing encoding. - static Instr SF(Register rd) { - return rd.Is64Bits() ? SixtyFourBits : ThirtyTwoBits; - } - - static Instr ImmAddSub(int64_t imm) { - VIXL_ASSERT(IsImmAddSub(imm)); - if (is_uint12(imm)) { // No shift required. - return imm << ImmAddSub_offset; - } else { - return ((imm >> 12) << ImmAddSub_offset) | (1 << ShiftAddSub_offset); - } - } - - static Instr ImmS(unsigned imms, unsigned reg_size) { - VIXL_ASSERT(((reg_size == kXRegSize) && is_uint6(imms)) || - ((reg_size == kWRegSize) && is_uint5(imms))); - USE(reg_size); - return imms << ImmS_offset; - } - - static Instr ImmR(unsigned immr, unsigned reg_size) { - VIXL_ASSERT(((reg_size == kXRegSize) && is_uint6(immr)) || - ((reg_size == kWRegSize) && is_uint5(immr))); - USE(reg_size); - VIXL_ASSERT(is_uint6(immr)); - return immr << ImmR_offset; - } - - static Instr ImmSetBits(unsigned imms, unsigned reg_size) { - VIXL_ASSERT((reg_size == kWRegSize) || (reg_size == kXRegSize)); - VIXL_ASSERT(is_uint6(imms)); - VIXL_ASSERT((reg_size == kXRegSize) || is_uint6(imms + 3)); - USE(reg_size); - return imms << ImmSetBits_offset; - } - - static Instr ImmRotate(unsigned immr, unsigned reg_size) { - VIXL_ASSERT((reg_size == kWRegSize) || (reg_size == kXRegSize)); - VIXL_ASSERT(((reg_size == kXRegSize) && is_uint6(immr)) || - ((reg_size == kWRegSize) && is_uint5(immr))); - USE(reg_size); - return immr << ImmRotate_offset; - } - - static Instr ImmLLiteral(int imm19) { - VIXL_ASSERT(is_int19(imm19)); - return truncate_to_int19(imm19) << ImmLLiteral_offset; - } - - static Instr BitN(unsigned bitn, unsigned reg_size) { - VIXL_ASSERT((reg_size == kWRegSize) || (reg_size == kXRegSize)); - VIXL_ASSERT((reg_size == kXRegSize) || (bitn == 0)); - USE(reg_size); - return bitn << BitN_offset; - } - - static Instr ShiftDP(Shift shift) { - VIXL_ASSERT(shift == LSL || shift == LSR || shift == ASR || shift == ROR); - return shift << ShiftDP_offset; - } - - static Instr ImmDPShift(unsigned amount) { - VIXL_ASSERT(is_uint6(amount)); - return amount << ImmDPShift_offset; - } - - static Instr ExtendMode(Extend extend) { - return extend << ExtendMode_offset; - } - - static Instr ImmExtendShift(unsigned left_shift) { - VIXL_ASSERT(left_shift <= 4); - return left_shift << ImmExtendShift_offset; - } - - static Instr ImmCondCmp(unsigned imm) { - VIXL_ASSERT(is_uint5(imm)); - return imm << ImmCondCmp_offset; - } - - static Instr Nzcv(StatusFlags nzcv) { - return ((nzcv >> Flags_offset) & 0xf) << Nzcv_offset; - } - - // MemOperand offset encoding. - static Instr ImmLSUnsigned(int imm12) { - VIXL_ASSERT(is_uint12(imm12)); - return imm12 << ImmLSUnsigned_offset; - } - - static Instr ImmLS(int imm9) { - VIXL_ASSERT(is_int9(imm9)); - return truncate_to_int9(imm9) << ImmLS_offset; - } - - static Instr ImmLSPair(int imm7, LSDataSize size) { - VIXL_ASSERT(((imm7 >> size) << size) == imm7); - int scaled_imm7 = imm7 >> size; - VIXL_ASSERT(is_int7(scaled_imm7)); - return truncate_to_int7(scaled_imm7) << ImmLSPair_offset; - } - - static Instr ImmShiftLS(unsigned shift_amount) { - VIXL_ASSERT(is_uint1(shift_amount)); - return shift_amount << ImmShiftLS_offset; - } - - static Instr ImmPrefetchOperation(int imm5) { - VIXL_ASSERT(is_uint5(imm5)); - return imm5 << ImmPrefetchOperation_offset; - } - - static Instr ImmException(int imm16) { - VIXL_ASSERT(is_uint16(imm16)); - return imm16 << ImmException_offset; - } - - static Instr ImmSystemRegister(int imm15) { - VIXL_ASSERT(is_uint15(imm15)); - return imm15 << ImmSystemRegister_offset; - } - - static Instr ImmHint(int imm7) { - VIXL_ASSERT(is_uint7(imm7)); - return imm7 << ImmHint_offset; - } - - static Instr CRm(int imm4) { - VIXL_ASSERT(is_uint4(imm4)); - return imm4 << CRm_offset; - } - - static Instr ImmBarrierDomain(int imm2) { - VIXL_ASSERT(is_uint2(imm2)); - return imm2 << ImmBarrierDomain_offset; - } - - static Instr ImmBarrierType(int imm2) { - VIXL_ASSERT(is_uint2(imm2)); - return imm2 << ImmBarrierType_offset; - } - - static LSDataSize CalcLSDataSize(LoadStoreOp op) { - VIXL_ASSERT((SizeLS_offset + SizeLS_width) == (kInstructionSize * 8)); - return static_cast<LSDataSize>(op >> SizeLS_offset); - } - - // Move immediates encoding. - static Instr ImmMoveWide(uint64_t imm) { - VIXL_ASSERT(is_uint16(imm)); - return imm << ImmMoveWide_offset; - } - - static Instr ShiftMoveWide(int64_t shift) { - VIXL_ASSERT(is_uint2(shift)); - return shift << ShiftMoveWide_offset; - } - - // FP Immediates. - static Instr ImmFP32(float imm); - static Instr ImmFP64(double imm); - - // FP register type. - static Instr FPType(FPRegister fd) { - return fd.Is64Bits() ? FP64 : FP32; - } - - static Instr FPScale(unsigned scale) { - VIXL_ASSERT(is_uint6(scale)); - return scale << FPScale_offset; - } - - // Immediate field checking helpers. - static bool IsImmAddSub(int64_t immediate); - static bool IsImmConditionalCompare(int64_t immediate); - static bool IsImmFP32(float imm); - static bool IsImmFP64(double imm); - static bool IsImmLogical(uint64_t value, - unsigned width, - unsigned* n = NULL, - unsigned* imm_s = NULL, - unsigned* imm_r = NULL); - static bool IsImmLSPair(int64_t offset, LSDataSize size); - static bool IsImmLSScaled(int64_t offset, LSDataSize size); - static bool IsImmLSUnscaled(int64_t offset); - static bool IsImmMovn(uint64_t imm, unsigned reg_size); - static bool IsImmMovz(uint64_t imm, unsigned reg_size); - - // Size of the code generated since label to the current position. - size_t SizeOfCodeGeneratedSince(Label* label) const { - VIXL_ASSERT(label->IsBound()); - return buffer_->OffsetFrom(label->location()); - } - - size_t SizeOfCodeGenerated() const { - return buffer_->CursorOffset(); - } - - size_t BufferCapacity() const { return buffer_->capacity(); } - - size_t RemainingBufferSpace() const { return buffer_->RemainingBytes(); } - - void EnsureSpaceFor(size_t amount) { - if (buffer_->RemainingBytes() < amount) { - size_t capacity = buffer_->capacity(); - size_t size = buffer_->CursorOffset(); - do { - // TODO(all): refine. - capacity *= 2; - } while ((capacity - size) < amount); - buffer_->Grow(capacity); - } - } - -#ifdef VIXL_DEBUG - void AcquireBuffer() { - VIXL_ASSERT(buffer_monitor_ >= 0); - buffer_monitor_++; - } - - void ReleaseBuffer() { - buffer_monitor_--; - VIXL_ASSERT(buffer_monitor_ >= 0); - } -#endif - - PositionIndependentCodeOption pic() const { - return pic_; - } - - bool AllowPageOffsetDependentCode() const { - return (pic() == PageOffsetDependentCode) || - (pic() == PositionDependentCode); - } - - static const Register& AppropriateZeroRegFor(const CPURegister& reg) { - return reg.Is64Bits() ? xzr : wzr; - } - - - protected: - void LoadStore(const CPURegister& rt, - const MemOperand& addr, - LoadStoreOp op, - LoadStoreScalingOption option = PreferScaledOffset); - - void LoadStorePair(const CPURegister& rt, - const CPURegister& rt2, - const MemOperand& addr, - LoadStorePairOp op); - - void Prefetch(PrefetchOperation op, - const MemOperand& addr, - LoadStoreScalingOption option = PreferScaledOffset); - - // TODO(all): The third parameter should be passed by reference but gcc 4.8.2 - // reports a bogus uninitialised warning then. - void Logical(const Register& rd, - const Register& rn, - const Operand operand, - LogicalOp op); - void LogicalImmediate(const Register& rd, - const Register& rn, - unsigned n, - unsigned imm_s, - unsigned imm_r, - LogicalOp op); - - void ConditionalCompare(const Register& rn, - const Operand& operand, - StatusFlags nzcv, - Condition cond, - ConditionalCompareOp op); - - void AddSubWithCarry(const Register& rd, - const Register& rn, - const Operand& operand, - FlagsUpdate S, - AddSubWithCarryOp op); - - - // Functions for emulating operands not directly supported by the instruction - // set. - void EmitShift(const Register& rd, - const Register& rn, - Shift shift, - unsigned amount); - void EmitExtendShift(const Register& rd, - const Register& rn, - Extend extend, - unsigned left_shift); - - void AddSub(const Register& rd, - const Register& rn, - const Operand& operand, - FlagsUpdate S, - AddSubOp op); - - // Find an appropriate LoadStoreOp or LoadStorePairOp for the specified - // registers. Only simple loads are supported; sign- and zero-extension (such - // as in LDPSW_x or LDRB_w) are not supported. - static LoadStoreOp LoadOpFor(const CPURegister& rt); - static LoadStorePairOp LoadPairOpFor(const CPURegister& rt, - const CPURegister& rt2); - static LoadStoreOp StoreOpFor(const CPURegister& rt); - static LoadStorePairOp StorePairOpFor(const CPURegister& rt, - const CPURegister& rt2); - static LoadStorePairNonTemporalOp LoadPairNonTemporalOpFor( - const CPURegister& rt, const CPURegister& rt2); - static LoadStorePairNonTemporalOp StorePairNonTemporalOpFor( - const CPURegister& rt, const CPURegister& rt2); - static LoadLiteralOp LoadLiteralOpFor(const CPURegister& rt); - - - private: - // Instruction helpers. - void MoveWide(const Register& rd, - uint64_t imm, - int shift, - MoveWideImmediateOp mov_op); - void DataProcShiftedRegister(const Register& rd, - const Register& rn, - const Operand& operand, - FlagsUpdate S, - Instr op); - void DataProcExtendedRegister(const Register& rd, - const Register& rn, - const Operand& operand, - FlagsUpdate S, - Instr op); - void LoadStorePairNonTemporal(const CPURegister& rt, - const CPURegister& rt2, - const MemOperand& addr, - LoadStorePairNonTemporalOp op); - void LoadLiteral(const CPURegister& rt, uint64_t imm, LoadLiteralOp op); - void ConditionalSelect(const Register& rd, - const Register& rn, - const Register& rm, - Condition cond, - ConditionalSelectOp op); - void DataProcessing1Source(const Register& rd, - const Register& rn, - DataProcessing1SourceOp op); - void DataProcessing3Source(const Register& rd, - const Register& rn, - const Register& rm, - const Register& ra, - DataProcessing3SourceOp op); - void FPDataProcessing1Source(const FPRegister& fd, - const FPRegister& fn, - FPDataProcessing1SourceOp op); - void FPDataProcessing2Source(const FPRegister& fd, - const FPRegister& fn, - const FPRegister& fm, - FPDataProcessing2SourceOp op); - void FPDataProcessing3Source(const FPRegister& fd, - const FPRegister& fn, - const FPRegister& fm, - const FPRegister& fa, - FPDataProcessing3SourceOp op); - - // Encode the specified MemOperand for the specified access size and scaling - // preference. - Instr LoadStoreMemOperand(const MemOperand& addr, - LSDataSize size, - LoadStoreScalingOption option); - - // Link the current (not-yet-emitted) instruction to the specified label, then - // return an offset to be encoded in the instruction. If the label is not yet - // bound, an offset of 0 is returned. - ptrdiff_t LinkAndGetByteOffsetTo(Label * label); - ptrdiff_t LinkAndGetInstructionOffsetTo(Label * label); - ptrdiff_t LinkAndGetPageOffsetTo(Label * label); - - // A common implementation for the LinkAndGet<Type>OffsetTo helpers. - template <int element_shift> - ptrdiff_t LinkAndGetOffsetTo(Label* label); - - // Literal load offset are in words (32-bit). - ptrdiff_t LinkAndGetWordOffsetTo(RawLiteral* literal); - - // Emit the instruction in buffer_. - void Emit(Instr instruction) { - VIXL_STATIC_ASSERT(sizeof(instruction) == kInstructionSize); - VIXL_ASSERT(buffer_monitor_ > 0); - buffer_->Emit32(instruction); - } - - // Buffer where the code is emitted. - CodeBuffer* buffer_; - PositionIndependentCodeOption pic_; - -#ifdef VIXL_DEBUG - int64_t buffer_monitor_; -#endif -}; - - -// All Assembler emits MUST acquire/release the underlying code buffer. The -// helper scope below will do so and optionally ensure the buffer is big enough -// to receive the emit. It is possible to request the scope not to perform any -// checks (kNoCheck) if for example it is known in advance the buffer size is -// adequate or there is some other size checking mechanism in place. -class CodeBufferCheckScope { - public: - // Tell whether or not the scope needs to ensure the associated CodeBuffer - // has enough space for the requested size. - enum CheckPolicy { - kNoCheck, - kCheck - }; - - // Tell whether or not the scope should assert the amount of code emitted - // within the scope is consistent with the requested amount. - enum AssertPolicy { - kNoAssert, // No assert required. - kExactSize, // The code emitted must be exactly size bytes. - kMaximumSize // The code emitted must be at most size bytes. - }; - - CodeBufferCheckScope(Assembler* assm, - size_t size, - CheckPolicy check_policy = kCheck, - AssertPolicy assert_policy = kMaximumSize) - : assm_(assm) { - if (check_policy == kCheck) assm->EnsureSpaceFor(size); -#ifdef VIXL_DEBUG - assm->bind(&start_); - size_ = size; - assert_policy_ = assert_policy; - assm->AcquireBuffer(); -#else - USE(assert_policy); -#endif - } - - // This is a shortcut for CodeBufferCheckScope(assm, 0, kNoCheck, kNoAssert). - explicit CodeBufferCheckScope(Assembler* assm) : assm_(assm) { -#ifdef VIXL_DEBUG - size_ = 0; - assert_policy_ = kNoAssert; - assm->AcquireBuffer(); -#endif - } - - ~CodeBufferCheckScope() { -#ifdef VIXL_DEBUG - assm_->ReleaseBuffer(); - switch (assert_policy_) { - case kNoAssert: break; - case kExactSize: - VIXL_ASSERT(assm_->SizeOfCodeGeneratedSince(&start_) == size_); - break; - case kMaximumSize: - VIXL_ASSERT(assm_->SizeOfCodeGeneratedSince(&start_) <= size_); - break; - default: - VIXL_UNREACHABLE(); - } -#endif - } - - protected: - Assembler* assm_; -#ifdef VIXL_DEBUG - Label start_; - size_t size_; - AssertPolicy assert_policy_; -#endif -}; - -} // namespace vixl - -#endif // VIXL_A64_ASSEMBLER_A64_H_ diff --git a/qemu/disas/libvixl/a64/disasm-a64.cc b/qemu/disas/libvixl/a64/disasm-a64.cc deleted file mode 100644 index f7bc2468b..000000000 --- a/qemu/disas/libvixl/a64/disasm-a64.cc +++ /dev/null @@ -1,1954 +0,0 @@ -// Copyright 2013, ARM Limited -// All rights reserved. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are met: -// -// * Redistributions of source code must retain the above copyright notice, -// this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above copyright notice, -// this list of conditions and the following disclaimer in the documentation -// and/or other materials provided with the distribution. -// * Neither the name of ARM Limited nor the names of its contributors may be -// used to endorse or promote products derived from this software without -// specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND -// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED -// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE -// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE -// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL -// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR -// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER -// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, -// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -#include <cstdlib> -#include "a64/disasm-a64.h" - -namespace vixl { - -Disassembler::Disassembler() { - buffer_size_ = 256; - buffer_ = reinterpret_cast<char*>(malloc(buffer_size_)); - buffer_pos_ = 0; - own_buffer_ = true; - code_address_offset_ = 0; -} - - -Disassembler::Disassembler(char* text_buffer, int buffer_size) { - buffer_size_ = buffer_size; - buffer_ = text_buffer; - buffer_pos_ = 0; - own_buffer_ = false; - code_address_offset_ = 0; -} - - -Disassembler::~Disassembler() { - if (own_buffer_) { - free(buffer_); - } -} - - -char* Disassembler::GetOutput() { - return buffer_; -} - - -void Disassembler::VisitAddSubImmediate(const Instruction* instr) { - bool rd_is_zr = RdIsZROrSP(instr); - bool stack_op = (rd_is_zr || RnIsZROrSP(instr)) && - (instr->ImmAddSub() == 0) ? true : false; - const char *mnemonic = ""; - const char *form = "'Rds, 'Rns, 'IAddSub"; - const char *form_cmp = "'Rns, 'IAddSub"; - const char *form_mov = "'Rds, 'Rns"; - - switch (instr->Mask(AddSubImmediateMask)) { - case ADD_w_imm: - case ADD_x_imm: { - mnemonic = "add"; - if (stack_op) { - mnemonic = "mov"; - form = form_mov; - } - break; - } - case ADDS_w_imm: - case ADDS_x_imm: { - mnemonic = "adds"; - if (rd_is_zr) { - mnemonic = "cmn"; - form = form_cmp; - } - break; - } - case SUB_w_imm: - case SUB_x_imm: mnemonic = "sub"; break; - case SUBS_w_imm: - case SUBS_x_imm: { - mnemonic = "subs"; - if (rd_is_zr) { - mnemonic = "cmp"; - form = form_cmp; - } - break; - } - default: VIXL_UNREACHABLE(); - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitAddSubShifted(const Instruction* instr) { - bool rd_is_zr = RdIsZROrSP(instr); - bool rn_is_zr = RnIsZROrSP(instr); - const char *mnemonic = ""; - const char *form = "'Rd, 'Rn, 'Rm'HDP"; - const char *form_cmp = "'Rn, 'Rm'HDP"; - const char *form_neg = "'Rd, 'Rm'HDP"; - - switch (instr->Mask(AddSubShiftedMask)) { - case ADD_w_shift: - case ADD_x_shift: mnemonic = "add"; break; - case ADDS_w_shift: - case ADDS_x_shift: { - mnemonic = "adds"; - if (rd_is_zr) { - mnemonic = "cmn"; - form = form_cmp; - } - break; - } - case SUB_w_shift: - case SUB_x_shift: { - mnemonic = "sub"; - if (rn_is_zr) { - mnemonic = "neg"; - form = form_neg; - } - break; - } - case SUBS_w_shift: - case SUBS_x_shift: { - mnemonic = "subs"; - if (rd_is_zr) { - mnemonic = "cmp"; - form = form_cmp; - } else if (rn_is_zr) { - mnemonic = "negs"; - form = form_neg; - } - break; - } - default: VIXL_UNREACHABLE(); - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitAddSubExtended(const Instruction* instr) { - bool rd_is_zr = RdIsZROrSP(instr); - const char *mnemonic = ""; - Extend mode = static_cast<Extend>(instr->ExtendMode()); - const char *form = ((mode == UXTX) || (mode == SXTX)) ? - "'Rds, 'Rns, 'Xm'Ext" : "'Rds, 'Rns, 'Wm'Ext"; - const char *form_cmp = ((mode == UXTX) || (mode == SXTX)) ? - "'Rns, 'Xm'Ext" : "'Rns, 'Wm'Ext"; - - switch (instr->Mask(AddSubExtendedMask)) { - case ADD_w_ext: - case ADD_x_ext: mnemonic = "add"; break; - case ADDS_w_ext: - case ADDS_x_ext: { - mnemonic = "adds"; - if (rd_is_zr) { - mnemonic = "cmn"; - form = form_cmp; - } - break; - } - case SUB_w_ext: - case SUB_x_ext: mnemonic = "sub"; break; - case SUBS_w_ext: - case SUBS_x_ext: { - mnemonic = "subs"; - if (rd_is_zr) { - mnemonic = "cmp"; - form = form_cmp; - } - break; - } - default: VIXL_UNREACHABLE(); - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitAddSubWithCarry(const Instruction* instr) { - bool rn_is_zr = RnIsZROrSP(instr); - const char *mnemonic = ""; - const char *form = "'Rd, 'Rn, 'Rm"; - const char *form_neg = "'Rd, 'Rm"; - - switch (instr->Mask(AddSubWithCarryMask)) { - case ADC_w: - case ADC_x: mnemonic = "adc"; break; - case ADCS_w: - case ADCS_x: mnemonic = "adcs"; break; - case SBC_w: - case SBC_x: { - mnemonic = "sbc"; - if (rn_is_zr) { - mnemonic = "ngc"; - form = form_neg; - } - break; - } - case SBCS_w: - case SBCS_x: { - mnemonic = "sbcs"; - if (rn_is_zr) { - mnemonic = "ngcs"; - form = form_neg; - } - break; - } - default: VIXL_UNREACHABLE(); - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitLogicalImmediate(const Instruction* instr) { - bool rd_is_zr = RdIsZROrSP(instr); - bool rn_is_zr = RnIsZROrSP(instr); - const char *mnemonic = ""; - const char *form = "'Rds, 'Rn, 'ITri"; - - if (instr->ImmLogical() == 0) { - // The immediate encoded in the instruction is not in the expected format. - Format(instr, "unallocated", "(LogicalImmediate)"); - return; - } - - switch (instr->Mask(LogicalImmediateMask)) { - case AND_w_imm: - case AND_x_imm: mnemonic = "and"; break; - case ORR_w_imm: - case ORR_x_imm: { - mnemonic = "orr"; - unsigned reg_size = (instr->SixtyFourBits() == 1) ? kXRegSize - : kWRegSize; - if (rn_is_zr && !IsMovzMovnImm(reg_size, instr->ImmLogical())) { - mnemonic = "mov"; - form = "'Rds, 'ITri"; - } - break; - } - case EOR_w_imm: - case EOR_x_imm: mnemonic = "eor"; break; - case ANDS_w_imm: - case ANDS_x_imm: { - mnemonic = "ands"; - if (rd_is_zr) { - mnemonic = "tst"; - form = "'Rn, 'ITri"; - } - break; - } - default: VIXL_UNREACHABLE(); - } - Format(instr, mnemonic, form); -} - - -bool Disassembler::IsMovzMovnImm(unsigned reg_size, uint64_t value) { - VIXL_ASSERT((reg_size == kXRegSize) || - ((reg_size == kWRegSize) && (value <= 0xffffffff))); - - // Test for movz: 16 bits set at positions 0, 16, 32 or 48. - if (((value & UINT64_C(0xffffffffffff0000)) == 0) || - ((value & UINT64_C(0xffffffff0000ffff)) == 0) || - ((value & UINT64_C(0xffff0000ffffffff)) == 0) || - ((value & UINT64_C(0x0000ffffffffffff)) == 0)) { - return true; - } - - // Test for movn: NOT(16 bits set at positions 0, 16, 32 or 48). - if ((reg_size == kXRegSize) && - (((~value & UINT64_C(0xffffffffffff0000)) == 0) || - ((~value & UINT64_C(0xffffffff0000ffff)) == 0) || - ((~value & UINT64_C(0xffff0000ffffffff)) == 0) || - ((~value & UINT64_C(0x0000ffffffffffff)) == 0))) { - return true; - } - if ((reg_size == kWRegSize) && - (((value & 0xffff0000) == 0xffff0000) || - ((value & 0x0000ffff) == 0x0000ffff))) { - return true; - } - return false; -} - - -void Disassembler::VisitLogicalShifted(const Instruction* instr) { - bool rd_is_zr = RdIsZROrSP(instr); - bool rn_is_zr = RnIsZROrSP(instr); - const char *mnemonic = ""; - const char *form = "'Rd, 'Rn, 'Rm'HLo"; - - switch (instr->Mask(LogicalShiftedMask)) { - case AND_w: - case AND_x: mnemonic = "and"; break; - case BIC_w: - case BIC_x: mnemonic = "bic"; break; - case EOR_w: - case EOR_x: mnemonic = "eor"; break; - case EON_w: - case EON_x: mnemonic = "eon"; break; - case BICS_w: - case BICS_x: mnemonic = "bics"; break; - case ANDS_w: - case ANDS_x: { - mnemonic = "ands"; - if (rd_is_zr) { - mnemonic = "tst"; - form = "'Rn, 'Rm'HLo"; - } - break; - } - case ORR_w: - case ORR_x: { - mnemonic = "orr"; - if (rn_is_zr && (instr->ImmDPShift() == 0) && (instr->ShiftDP() == LSL)) { - mnemonic = "mov"; - form = "'Rd, 'Rm"; - } - break; - } - case ORN_w: - case ORN_x: { - mnemonic = "orn"; - if (rn_is_zr) { - mnemonic = "mvn"; - form = "'Rd, 'Rm'HLo"; - } - break; - } - default: VIXL_UNREACHABLE(); - } - - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitConditionalCompareRegister(const Instruction* instr) { - const char *mnemonic = ""; - const char *form = "'Rn, 'Rm, 'INzcv, 'Cond"; - - switch (instr->Mask(ConditionalCompareRegisterMask)) { - case CCMN_w: - case CCMN_x: mnemonic = "ccmn"; break; - case CCMP_w: - case CCMP_x: mnemonic = "ccmp"; break; - default: VIXL_UNREACHABLE(); - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitConditionalCompareImmediate(const Instruction* instr) { - const char *mnemonic = ""; - const char *form = "'Rn, 'IP, 'INzcv, 'Cond"; - - switch (instr->Mask(ConditionalCompareImmediateMask)) { - case CCMN_w_imm: - case CCMN_x_imm: mnemonic = "ccmn"; break; - case CCMP_w_imm: - case CCMP_x_imm: mnemonic = "ccmp"; break; - default: VIXL_UNREACHABLE(); - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitConditionalSelect(const Instruction* instr) { - bool rnm_is_zr = (RnIsZROrSP(instr) && RmIsZROrSP(instr)); - bool rn_is_rm = (instr->Rn() == instr->Rm()); - const char *mnemonic = ""; - const char *form = "'Rd, 'Rn, 'Rm, 'Cond"; - const char *form_test = "'Rd, 'CInv"; - const char *form_update = "'Rd, 'Rn, 'CInv"; - - Condition cond = static_cast<Condition>(instr->Condition()); - bool invertible_cond = (cond != al) && (cond != nv); - - switch (instr->Mask(ConditionalSelectMask)) { - case CSEL_w: - case CSEL_x: mnemonic = "csel"; break; - case CSINC_w: - case CSINC_x: { - mnemonic = "csinc"; - if (rnm_is_zr && invertible_cond) { - mnemonic = "cset"; - form = form_test; - } else if (rn_is_rm && invertible_cond) { - mnemonic = "cinc"; - form = form_update; - } - break; - } - case CSINV_w: - case CSINV_x: { - mnemonic = "csinv"; - if (rnm_is_zr && invertible_cond) { - mnemonic = "csetm"; - form = form_test; - } else if (rn_is_rm && invertible_cond) { - mnemonic = "cinv"; - form = form_update; - } - break; - } - case CSNEG_w: - case CSNEG_x: { - mnemonic = "csneg"; - if (rn_is_rm && invertible_cond) { - mnemonic = "cneg"; - form = form_update; - } - break; - } - default: VIXL_UNREACHABLE(); - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitBitfield(const Instruction* instr) { - unsigned s = instr->ImmS(); - unsigned r = instr->ImmR(); - unsigned rd_size_minus_1 = - ((instr->SixtyFourBits() == 1) ? kXRegSize : kWRegSize) - 1; - const char *mnemonic = ""; - const char *form = ""; - const char *form_shift_right = "'Rd, 'Rn, 'IBr"; - const char *form_extend = "'Rd, 'Wn"; - const char *form_bfiz = "'Rd, 'Rn, 'IBZ-r, 'IBs+1"; - const char *form_bfx = "'Rd, 'Rn, 'IBr, 'IBs-r+1"; - const char *form_lsl = "'Rd, 'Rn, 'IBZ-r"; - - switch (instr->Mask(BitfieldMask)) { - case SBFM_w: - case SBFM_x: { - mnemonic = "sbfx"; - form = form_bfx; - if (r == 0) { - form = form_extend; - if (s == 7) { - mnemonic = "sxtb"; - } else if (s == 15) { - mnemonic = "sxth"; - } else if ((s == 31) && (instr->SixtyFourBits() == 1)) { - mnemonic = "sxtw"; - } else { - form = form_bfx; - } - } else if (s == rd_size_minus_1) { - mnemonic = "asr"; - form = form_shift_right; - } else if (s < r) { - mnemonic = "sbfiz"; - form = form_bfiz; - } - break; - } - case UBFM_w: - case UBFM_x: { - mnemonic = "ubfx"; - form = form_bfx; - if (r == 0) { - form = form_extend; - if (s == 7) { - mnemonic = "uxtb"; - } else if (s == 15) { - mnemonic = "uxth"; - } else { - form = form_bfx; - } - } - if (s == rd_size_minus_1) { - mnemonic = "lsr"; - form = form_shift_right; - } else if (r == s + 1) { - mnemonic = "lsl"; - form = form_lsl; - } else if (s < r) { - mnemonic = "ubfiz"; - form = form_bfiz; - } - break; - } - case BFM_w: - case BFM_x: { - mnemonic = "bfxil"; - form = form_bfx; - if (s < r) { - mnemonic = "bfi"; - form = form_bfiz; - } - } - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitExtract(const Instruction* instr) { - const char *mnemonic = ""; - const char *form = "'Rd, 'Rn, 'Rm, 'IExtract"; - - switch (instr->Mask(ExtractMask)) { - case EXTR_w: - case EXTR_x: { - if (instr->Rn() == instr->Rm()) { - mnemonic = "ror"; - form = "'Rd, 'Rn, 'IExtract"; - } else { - mnemonic = "extr"; - } - break; - } - default: VIXL_UNREACHABLE(); - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitPCRelAddressing(const Instruction* instr) { - switch (instr->Mask(PCRelAddressingMask)) { - case ADR: Format(instr, "adr", "'Xd, 'AddrPCRelByte"); break; - case ADRP: Format(instr, "adrp", "'Xd, 'AddrPCRelPage"); break; - default: Format(instr, "unimplemented", "(PCRelAddressing)"); - } -} - - -void Disassembler::VisitConditionalBranch(const Instruction* instr) { - switch (instr->Mask(ConditionalBranchMask)) { - case B_cond: Format(instr, "b.'CBrn", "'BImmCond"); break; - default: VIXL_UNREACHABLE(); - } -} - - -void Disassembler::VisitUnconditionalBranchToRegister( - const Instruction* instr) { - const char *mnemonic = "unimplemented"; - const char *form = "'Xn"; - - switch (instr->Mask(UnconditionalBranchToRegisterMask)) { - case BR: mnemonic = "br"; break; - case BLR: mnemonic = "blr"; break; - case RET: { - mnemonic = "ret"; - if (instr->Rn() == kLinkRegCode) { - form = NULL; - } - break; - } - default: form = "(UnconditionalBranchToRegister)"; - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitUnconditionalBranch(const Instruction* instr) { - const char *mnemonic = ""; - const char *form = "'BImmUncn"; - - switch (instr->Mask(UnconditionalBranchMask)) { - case B: mnemonic = "b"; break; - case BL: mnemonic = "bl"; break; - default: VIXL_UNREACHABLE(); - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitDataProcessing1Source(const Instruction* instr) { - const char *mnemonic = ""; - const char *form = "'Rd, 'Rn"; - - switch (instr->Mask(DataProcessing1SourceMask)) { - #define FORMAT(A, B) \ - case A##_w: \ - case A##_x: mnemonic = B; break; - FORMAT(RBIT, "rbit"); - FORMAT(REV16, "rev16"); - FORMAT(REV, "rev"); - FORMAT(CLZ, "clz"); - FORMAT(CLS, "cls"); - #undef FORMAT - case REV32_x: mnemonic = "rev32"; break; - default: VIXL_UNREACHABLE(); - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitDataProcessing2Source(const Instruction* instr) { - const char *mnemonic = "unimplemented"; - const char *form = "'Rd, 'Rn, 'Rm"; - - switch (instr->Mask(DataProcessing2SourceMask)) { - #define FORMAT(A, B) \ - case A##_w: \ - case A##_x: mnemonic = B; break; - FORMAT(UDIV, "udiv"); - FORMAT(SDIV, "sdiv"); - FORMAT(LSLV, "lsl"); - FORMAT(LSRV, "lsr"); - FORMAT(ASRV, "asr"); - FORMAT(RORV, "ror"); - #undef FORMAT - default: form = "(DataProcessing2Source)"; - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitDataProcessing3Source(const Instruction* instr) { - bool ra_is_zr = RaIsZROrSP(instr); - const char *mnemonic = ""; - const char *form = "'Xd, 'Wn, 'Wm, 'Xa"; - const char *form_rrr = "'Rd, 'Rn, 'Rm"; - const char *form_rrrr = "'Rd, 'Rn, 'Rm, 'Ra"; - const char *form_xww = "'Xd, 'Wn, 'Wm"; - const char *form_xxx = "'Xd, 'Xn, 'Xm"; - - switch (instr->Mask(DataProcessing3SourceMask)) { - case MADD_w: - case MADD_x: { - mnemonic = "madd"; - form = form_rrrr; - if (ra_is_zr) { - mnemonic = "mul"; - form = form_rrr; - } - break; - } - case MSUB_w: - case MSUB_x: { - mnemonic = "msub"; - form = form_rrrr; - if (ra_is_zr) { - mnemonic = "mneg"; - form = form_rrr; - } - break; - } - case SMADDL_x: { - mnemonic = "smaddl"; - if (ra_is_zr) { - mnemonic = "smull"; - form = form_xww; - } - break; - } - case SMSUBL_x: { - mnemonic = "smsubl"; - if (ra_is_zr) { - mnemonic = "smnegl"; - form = form_xww; - } - break; - } - case UMADDL_x: { - mnemonic = "umaddl"; - if (ra_is_zr) { - mnemonic = "umull"; - form = form_xww; - } - break; - } - case UMSUBL_x: { - mnemonic = "umsubl"; - if (ra_is_zr) { - mnemonic = "umnegl"; - form = form_xww; - } - break; - } - case SMULH_x: { - mnemonic = "smulh"; - form = form_xxx; - break; - } - case UMULH_x: { - mnemonic = "umulh"; - form = form_xxx; - break; - } - default: VIXL_UNREACHABLE(); - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitCompareBranch(const Instruction* instr) { - const char *mnemonic = ""; - const char *form = "'Rt, 'BImmCmpa"; - - switch (instr->Mask(CompareBranchMask)) { - case CBZ_w: - case CBZ_x: mnemonic = "cbz"; break; - case CBNZ_w: - case CBNZ_x: mnemonic = "cbnz"; break; - default: VIXL_UNREACHABLE(); - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitTestBranch(const Instruction* instr) { - const char *mnemonic = ""; - // If the top bit of the immediate is clear, the tested register is - // disassembled as Wt, otherwise Xt. As the top bit of the immediate is - // encoded in bit 31 of the instruction, we can reuse the Rt form, which - // uses bit 31 (normally "sf") to choose the register size. - const char *form = "'Rt, 'IS, 'BImmTest"; - - switch (instr->Mask(TestBranchMask)) { - case TBZ: mnemonic = "tbz"; break; - case TBNZ: mnemonic = "tbnz"; break; - default: VIXL_UNREACHABLE(); - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitMoveWideImmediate(const Instruction* instr) { - const char *mnemonic = ""; - const char *form = "'Rd, 'IMoveImm"; - - // Print the shift separately for movk, to make it clear which half word will - // be overwritten. Movn and movz print the computed immediate, which includes - // shift calculation. - switch (instr->Mask(MoveWideImmediateMask)) { - case MOVN_w: - case MOVN_x: - if ((instr->ImmMoveWide()) || (instr->ShiftMoveWide() == 0)) { - if ((instr->SixtyFourBits() == 0) && (instr->ImmMoveWide() == 0xffff)) { - mnemonic = "movn"; - } else { - mnemonic = "mov"; - form = "'Rd, 'IMoveNeg"; - } - } else { - mnemonic = "movn"; - } - break; - case MOVZ_w: - case MOVZ_x: - if ((instr->ImmMoveWide()) || (instr->ShiftMoveWide() == 0)) - mnemonic = "mov"; - else - mnemonic = "movz"; - break; - case MOVK_w: - case MOVK_x: mnemonic = "movk"; form = "'Rd, 'IMoveLSL"; break; - default: VIXL_UNREACHABLE(); - } - Format(instr, mnemonic, form); -} - - -#define LOAD_STORE_LIST(V) \ - V(STRB_w, "strb", "'Wt") \ - V(STRH_w, "strh", "'Wt") \ - V(STR_w, "str", "'Wt") \ - V(STR_x, "str", "'Xt") \ - V(LDRB_w, "ldrb", "'Wt") \ - V(LDRH_w, "ldrh", "'Wt") \ - V(LDR_w, "ldr", "'Wt") \ - V(LDR_x, "ldr", "'Xt") \ - V(LDRSB_x, "ldrsb", "'Xt") \ - V(LDRSH_x, "ldrsh", "'Xt") \ - V(LDRSW_x, "ldrsw", "'Xt") \ - V(LDRSB_w, "ldrsb", "'Wt") \ - V(LDRSH_w, "ldrsh", "'Wt") \ - V(STR_s, "str", "'St") \ - V(STR_d, "str", "'Dt") \ - V(LDR_s, "ldr", "'St") \ - V(LDR_d, "ldr", "'Dt") - -void Disassembler::VisitLoadStorePreIndex(const Instruction* instr) { - const char *mnemonic = "unimplemented"; - const char *form = "(LoadStorePreIndex)"; - - switch (instr->Mask(LoadStorePreIndexMask)) { - #define LS_PREINDEX(A, B, C) \ - case A##_pre: mnemonic = B; form = C ", ['Xns'ILS]!"; break; - LOAD_STORE_LIST(LS_PREINDEX) - #undef LS_PREINDEX - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitLoadStorePostIndex(const Instruction* instr) { - const char *mnemonic = "unimplemented"; - const char *form = "(LoadStorePostIndex)"; - - switch (instr->Mask(LoadStorePostIndexMask)) { - #define LS_POSTINDEX(A, B, C) \ - case A##_post: mnemonic = B; form = C ", ['Xns]'ILS"; break; - LOAD_STORE_LIST(LS_POSTINDEX) - #undef LS_POSTINDEX - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitLoadStoreUnsignedOffset(const Instruction* instr) { - const char *mnemonic = "unimplemented"; - const char *form = "(LoadStoreUnsignedOffset)"; - - switch (instr->Mask(LoadStoreUnsignedOffsetMask)) { - #define LS_UNSIGNEDOFFSET(A, B, C) \ - case A##_unsigned: mnemonic = B; form = C ", ['Xns'ILU]"; break; - LOAD_STORE_LIST(LS_UNSIGNEDOFFSET) - #undef LS_UNSIGNEDOFFSET - case PRFM_unsigned: mnemonic = "prfm"; form = "'PrefOp, ['Xns'ILU]"; - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitLoadStoreRegisterOffset(const Instruction* instr) { - const char *mnemonic = "unimplemented"; - const char *form = "(LoadStoreRegisterOffset)"; - - switch (instr->Mask(LoadStoreRegisterOffsetMask)) { - #define LS_REGISTEROFFSET(A, B, C) \ - case A##_reg: mnemonic = B; form = C ", ['Xns, 'Offsetreg]"; break; - LOAD_STORE_LIST(LS_REGISTEROFFSET) - #undef LS_REGISTEROFFSET - case PRFM_reg: mnemonic = "prfm"; form = "'PrefOp, ['Xns, 'Offsetreg]"; - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitLoadStoreUnscaledOffset(const Instruction* instr) { - const char *mnemonic = "unimplemented"; - const char *form = "'Wt, ['Xns'ILS]"; - const char *form_x = "'Xt, ['Xns'ILS]"; - const char *form_s = "'St, ['Xns'ILS]"; - const char *form_d = "'Dt, ['Xns'ILS]"; - const char *form_prefetch = "'PrefOp, ['Xns'ILS]"; - - switch (instr->Mask(LoadStoreUnscaledOffsetMask)) { - case STURB_w: mnemonic = "sturb"; break; - case STURH_w: mnemonic = "sturh"; break; - case STUR_w: mnemonic = "stur"; break; - case STUR_x: mnemonic = "stur"; form = form_x; break; - case STUR_s: mnemonic = "stur"; form = form_s; break; - case STUR_d: mnemonic = "stur"; form = form_d; break; - case LDURB_w: mnemonic = "ldurb"; break; - case LDURH_w: mnemonic = "ldurh"; break; - case LDUR_w: mnemonic = "ldur"; break; - case LDUR_x: mnemonic = "ldur"; form = form_x; break; - case LDUR_s: mnemonic = "ldur"; form = form_s; break; - case LDUR_d: mnemonic = "ldur"; form = form_d; break; - case LDURSB_x: form = form_x; // Fall through. - case LDURSB_w: mnemonic = "ldursb"; break; - case LDURSH_x: form = form_x; // Fall through. - case LDURSH_w: mnemonic = "ldursh"; break; - case LDURSW_x: mnemonic = "ldursw"; form = form_x; break; - case PRFUM: mnemonic = "prfum"; form = form_prefetch; break; - default: form = "(LoadStoreUnscaledOffset)"; - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitLoadLiteral(const Instruction* instr) { - const char *mnemonic = "ldr"; - const char *form = "(LoadLiteral)"; - - switch (instr->Mask(LoadLiteralMask)) { - case LDR_w_lit: form = "'Wt, 'ILLiteral 'LValue"; break; - case LDR_x_lit: form = "'Xt, 'ILLiteral 'LValue"; break; - case LDR_s_lit: form = "'St, 'ILLiteral 'LValue"; break; - case LDR_d_lit: form = "'Dt, 'ILLiteral 'LValue"; break; - case LDRSW_x_lit: { - mnemonic = "ldrsw"; - form = "'Xt, 'ILLiteral 'LValue"; - break; - } - case PRFM_lit: { - mnemonic = "prfm"; - form = "'PrefOp, 'ILLiteral 'LValue"; - break; - } - default: mnemonic = "unimplemented"; - } - Format(instr, mnemonic, form); -} - - -#define LOAD_STORE_PAIR_LIST(V) \ - V(STP_w, "stp", "'Wt, 'Wt2", "4") \ - V(LDP_w, "ldp", "'Wt, 'Wt2", "4") \ - V(LDPSW_x, "ldpsw", "'Xt, 'Xt2", "4") \ - V(STP_x, "stp", "'Xt, 'Xt2", "8") \ - V(LDP_x, "ldp", "'Xt, 'Xt2", "8") \ - V(STP_s, "stp", "'St, 'St2", "4") \ - V(LDP_s, "ldp", "'St, 'St2", "4") \ - V(STP_d, "stp", "'Dt, 'Dt2", "8") \ - V(LDP_d, "ldp", "'Dt, 'Dt2", "8") - -void Disassembler::VisitLoadStorePairPostIndex(const Instruction* instr) { - const char *mnemonic = "unimplemented"; - const char *form = "(LoadStorePairPostIndex)"; - - switch (instr->Mask(LoadStorePairPostIndexMask)) { - #define LSP_POSTINDEX(A, B, C, D) \ - case A##_post: mnemonic = B; form = C ", ['Xns]'ILP" D; break; - LOAD_STORE_PAIR_LIST(LSP_POSTINDEX) - #undef LSP_POSTINDEX - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitLoadStorePairPreIndex(const Instruction* instr) { - const char *mnemonic = "unimplemented"; - const char *form = "(LoadStorePairPreIndex)"; - - switch (instr->Mask(LoadStorePairPreIndexMask)) { - #define LSP_PREINDEX(A, B, C, D) \ - case A##_pre: mnemonic = B; form = C ", ['Xns'ILP" D "]!"; break; - LOAD_STORE_PAIR_LIST(LSP_PREINDEX) - #undef LSP_PREINDEX - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitLoadStorePairOffset(const Instruction* instr) { - const char *mnemonic = "unimplemented"; - const char *form = "(LoadStorePairOffset)"; - - switch (instr->Mask(LoadStorePairOffsetMask)) { - #define LSP_OFFSET(A, B, C, D) \ - case A##_off: mnemonic = B; form = C ", ['Xns'ILP" D "]"; break; - LOAD_STORE_PAIR_LIST(LSP_OFFSET) - #undef LSP_OFFSET - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitLoadStorePairNonTemporal(const Instruction* instr) { - const char *mnemonic = "unimplemented"; - const char *form; - - switch (instr->Mask(LoadStorePairNonTemporalMask)) { - case STNP_w: mnemonic = "stnp"; form = "'Wt, 'Wt2, ['Xns'ILP4]"; break; - case LDNP_w: mnemonic = "ldnp"; form = "'Wt, 'Wt2, ['Xns'ILP4]"; break; - case STNP_x: mnemonic = "stnp"; form = "'Xt, 'Xt2, ['Xns'ILP8]"; break; - case LDNP_x: mnemonic = "ldnp"; form = "'Xt, 'Xt2, ['Xns'ILP8]"; break; - case STNP_s: mnemonic = "stnp"; form = "'St, 'St2, ['Xns'ILP4]"; break; - case LDNP_s: mnemonic = "ldnp"; form = "'St, 'St2, ['Xns'ILP4]"; break; - case STNP_d: mnemonic = "stnp"; form = "'Dt, 'Dt2, ['Xns'ILP8]"; break; - case LDNP_d: mnemonic = "ldnp"; form = "'Dt, 'Dt2, ['Xns'ILP8]"; break; - default: form = "(LoadStorePairNonTemporal)"; - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitLoadStoreExclusive(const Instruction* instr) { - const char *mnemonic = "unimplemented"; - const char *form; - - switch (instr->Mask(LoadStoreExclusiveMask)) { - case STXRB_w: mnemonic = "stxrb"; form = "'Ws, 'Wt, ['Xns]"; break; - case STXRH_w: mnemonic = "stxrh"; form = "'Ws, 'Wt, ['Xns]"; break; - case STXR_w: mnemonic = "stxr"; form = "'Ws, 'Wt, ['Xns]"; break; - case STXR_x: mnemonic = "stxr"; form = "'Ws, 'Xt, ['Xns]"; break; - case LDXRB_w: mnemonic = "ldxrb"; form = "'Wt, ['Xns]"; break; - case LDXRH_w: mnemonic = "ldxrh"; form = "'Wt, ['Xns]"; break; - case LDXR_w: mnemonic = "ldxr"; form = "'Wt, ['Xns]"; break; - case LDXR_x: mnemonic = "ldxr"; form = "'Xt, ['Xns]"; break; - case STXP_w: mnemonic = "stxp"; form = "'Ws, 'Wt, 'Wt2, ['Xns]"; break; - case STXP_x: mnemonic = "stxp"; form = "'Ws, 'Xt, 'Xt2, ['Xns]"; break; - case LDXP_w: mnemonic = "ldxp"; form = "'Wt, 'Wt2, ['Xns]"; break; - case LDXP_x: mnemonic = "ldxp"; form = "'Xt, 'Xt2, ['Xns]"; break; - case STLXRB_w: mnemonic = "stlxrb"; form = "'Ws, 'Wt, ['Xns]"; break; - case STLXRH_w: mnemonic = "stlxrh"; form = "'Ws, 'Wt, ['Xns]"; break; - case STLXR_w: mnemonic = "stlxr"; form = "'Ws, 'Wt, ['Xns]"; break; - case STLXR_x: mnemonic = "stlxr"; form = "'Ws, 'Xt, ['Xns]"; break; - case LDAXRB_w: mnemonic = "ldaxrb"; form = "'Wt, ['Xns]"; break; - case LDAXRH_w: mnemonic = "ldaxrh"; form = "'Wt, ['Xns]"; break; - case LDAXR_w: mnemonic = "ldaxr"; form = "'Wt, ['Xns]"; break; - case LDAXR_x: mnemonic = "ldaxr"; form = "'Xt, ['Xns]"; break; - case STLXP_w: mnemonic = "stlxp"; form = "'Ws, 'Wt, 'Wt2, ['Xns]"; break; - case STLXP_x: mnemonic = "stlxp"; form = "'Ws, 'Xt, 'Xt2, ['Xns]"; break; - case LDAXP_w: mnemonic = "ldaxp"; form = "'Wt, 'Wt2, ['Xns]"; break; - case LDAXP_x: mnemonic = "ldaxp"; form = "'Xt, 'Xt2, ['Xns]"; break; - case STLRB_w: mnemonic = "stlrb"; form = "'Wt, ['Xns]"; break; - case STLRH_w: mnemonic = "stlrh"; form = "'Wt, ['Xns]"; break; - case STLR_w: mnemonic = "stlr"; form = "'Wt, ['Xns]"; break; - case STLR_x: mnemonic = "stlr"; form = "'Xt, ['Xns]"; break; - case LDARB_w: mnemonic = "ldarb"; form = "'Wt, ['Xns]"; break; - case LDARH_w: mnemonic = "ldarh"; form = "'Wt, ['Xns]"; break; - case LDAR_w: mnemonic = "ldar"; form = "'Wt, ['Xns]"; break; - case LDAR_x: mnemonic = "ldar"; form = "'Xt, ['Xns]"; break; - default: form = "(LoadStoreExclusive)"; - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitFPCompare(const Instruction* instr) { - const char *mnemonic = "unimplemented"; - const char *form = "'Fn, 'Fm"; - const char *form_zero = "'Fn, #0.0"; - - switch (instr->Mask(FPCompareMask)) { - case FCMP_s_zero: - case FCMP_d_zero: form = form_zero; // Fall through. - case FCMP_s: - case FCMP_d: mnemonic = "fcmp"; break; - default: form = "(FPCompare)"; - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitFPConditionalCompare(const Instruction* instr) { - const char *mnemonic = "unmplemented"; - const char *form = "'Fn, 'Fm, 'INzcv, 'Cond"; - - switch (instr->Mask(FPConditionalCompareMask)) { - case FCCMP_s: - case FCCMP_d: mnemonic = "fccmp"; break; - case FCCMPE_s: - case FCCMPE_d: mnemonic = "fccmpe"; break; - default: form = "(FPConditionalCompare)"; - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitFPConditionalSelect(const Instruction* instr) { - const char *mnemonic = ""; - const char *form = "'Fd, 'Fn, 'Fm, 'Cond"; - - switch (instr->Mask(FPConditionalSelectMask)) { - case FCSEL_s: - case FCSEL_d: mnemonic = "fcsel"; break; - default: VIXL_UNREACHABLE(); - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitFPDataProcessing1Source(const Instruction* instr) { - const char *mnemonic = "unimplemented"; - const char *form = "'Fd, 'Fn"; - - switch (instr->Mask(FPDataProcessing1SourceMask)) { - #define FORMAT(A, B) \ - case A##_s: \ - case A##_d: mnemonic = B; break; - FORMAT(FMOV, "fmov"); - FORMAT(FABS, "fabs"); - FORMAT(FNEG, "fneg"); - FORMAT(FSQRT, "fsqrt"); - FORMAT(FRINTN, "frintn"); - FORMAT(FRINTP, "frintp"); - FORMAT(FRINTM, "frintm"); - FORMAT(FRINTZ, "frintz"); - FORMAT(FRINTA, "frinta"); - FORMAT(FRINTX, "frintx"); - FORMAT(FRINTI, "frinti"); - #undef FORMAT - case FCVT_ds: mnemonic = "fcvt"; form = "'Dd, 'Sn"; break; - case FCVT_sd: mnemonic = "fcvt"; form = "'Sd, 'Dn"; break; - default: form = "(FPDataProcessing1Source)"; - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitFPDataProcessing2Source(const Instruction* instr) { - const char *mnemonic = ""; - const char *form = "'Fd, 'Fn, 'Fm"; - - switch (instr->Mask(FPDataProcessing2SourceMask)) { - #define FORMAT(A, B) \ - case A##_s: \ - case A##_d: mnemonic = B; break; - FORMAT(FMUL, "fmul"); - FORMAT(FDIV, "fdiv"); - FORMAT(FADD, "fadd"); - FORMAT(FSUB, "fsub"); - FORMAT(FMAX, "fmax"); - FORMAT(FMIN, "fmin"); - FORMAT(FMAXNM, "fmaxnm"); - FORMAT(FMINNM, "fminnm"); - FORMAT(FNMUL, "fnmul"); - #undef FORMAT - default: VIXL_UNREACHABLE(); - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitFPDataProcessing3Source(const Instruction* instr) { - const char *mnemonic = ""; - const char *form = "'Fd, 'Fn, 'Fm, 'Fa"; - - switch (instr->Mask(FPDataProcessing3SourceMask)) { - #define FORMAT(A, B) \ - case A##_s: \ - case A##_d: mnemonic = B; break; - FORMAT(FMADD, "fmadd"); - FORMAT(FMSUB, "fmsub"); - FORMAT(FNMADD, "fnmadd"); - FORMAT(FNMSUB, "fnmsub"); - #undef FORMAT - default: VIXL_UNREACHABLE(); - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitFPImmediate(const Instruction* instr) { - const char *mnemonic = ""; - const char *form = "(FPImmediate)"; - - switch (instr->Mask(FPImmediateMask)) { - case FMOV_s_imm: mnemonic = "fmov"; form = "'Sd, 'IFPSingle"; break; - case FMOV_d_imm: mnemonic = "fmov"; form = "'Dd, 'IFPDouble"; break; - default: VIXL_UNREACHABLE(); - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitFPIntegerConvert(const Instruction* instr) { - const char *mnemonic = "unimplemented"; - const char *form = "(FPIntegerConvert)"; - const char *form_rf = "'Rd, 'Fn"; - const char *form_fr = "'Fd, 'Rn"; - - switch (instr->Mask(FPIntegerConvertMask)) { - case FMOV_ws: - case FMOV_xd: mnemonic = "fmov"; form = form_rf; break; - case FMOV_sw: - case FMOV_dx: mnemonic = "fmov"; form = form_fr; break; - case FCVTAS_ws: - case FCVTAS_xs: - case FCVTAS_wd: - case FCVTAS_xd: mnemonic = "fcvtas"; form = form_rf; break; - case FCVTAU_ws: - case FCVTAU_xs: - case FCVTAU_wd: - case FCVTAU_xd: mnemonic = "fcvtau"; form = form_rf; break; - case FCVTMS_ws: - case FCVTMS_xs: - case FCVTMS_wd: - case FCVTMS_xd: mnemonic = "fcvtms"; form = form_rf; break; - case FCVTMU_ws: - case FCVTMU_xs: - case FCVTMU_wd: - case FCVTMU_xd: mnemonic = "fcvtmu"; form = form_rf; break; - case FCVTNS_ws: - case FCVTNS_xs: - case FCVTNS_wd: - case FCVTNS_xd: mnemonic = "fcvtns"; form = form_rf; break; - case FCVTNU_ws: - case FCVTNU_xs: - case FCVTNU_wd: - case FCVTNU_xd: mnemonic = "fcvtnu"; form = form_rf; break; - case FCVTZU_xd: - case FCVTZU_ws: - case FCVTZU_wd: - case FCVTZU_xs: mnemonic = "fcvtzu"; form = form_rf; break; - case FCVTZS_xd: - case FCVTZS_wd: - case FCVTZS_xs: - case FCVTZS_ws: mnemonic = "fcvtzs"; form = form_rf; break; - case SCVTF_sw: - case SCVTF_sx: - case SCVTF_dw: - case SCVTF_dx: mnemonic = "scvtf"; form = form_fr; break; - case UCVTF_sw: - case UCVTF_sx: - case UCVTF_dw: - case UCVTF_dx: mnemonic = "ucvtf"; form = form_fr; break; - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitFPFixedPointConvert(const Instruction* instr) { - const char *mnemonic = ""; - const char *form = "'Rd, 'Fn, 'IFPFBits"; - const char *form_fr = "'Fd, 'Rn, 'IFPFBits"; - - switch (instr->Mask(FPFixedPointConvertMask)) { - case FCVTZS_ws_fixed: - case FCVTZS_xs_fixed: - case FCVTZS_wd_fixed: - case FCVTZS_xd_fixed: mnemonic = "fcvtzs"; break; - case FCVTZU_ws_fixed: - case FCVTZU_xs_fixed: - case FCVTZU_wd_fixed: - case FCVTZU_xd_fixed: mnemonic = "fcvtzu"; break; - case SCVTF_sw_fixed: - case SCVTF_sx_fixed: - case SCVTF_dw_fixed: - case SCVTF_dx_fixed: mnemonic = "scvtf"; form = form_fr; break; - case UCVTF_sw_fixed: - case UCVTF_sx_fixed: - case UCVTF_dw_fixed: - case UCVTF_dx_fixed: mnemonic = "ucvtf"; form = form_fr; break; - default: VIXL_UNREACHABLE(); - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitSystem(const Instruction* instr) { - // Some system instructions hijack their Op and Cp fields to represent a - // range of immediates instead of indicating a different instruction. This - // makes the decoding tricky. - const char *mnemonic = "unimplemented"; - const char *form = "(System)"; - - if (instr->Mask(SystemExclusiveMonitorFMask) == SystemExclusiveMonitorFixed) { - switch (instr->Mask(SystemExclusiveMonitorMask)) { - case CLREX: { - mnemonic = "clrex"; - form = (instr->CRm() == 0xf) ? NULL : "'IX"; - break; - } - } - } else if (instr->Mask(SystemSysRegFMask) == SystemSysRegFixed) { - switch (instr->Mask(SystemSysRegMask)) { - case MRS: { - mnemonic = "mrs"; - switch (instr->ImmSystemRegister()) { - case NZCV: form = "'Xt, nzcv"; break; - case FPCR: form = "'Xt, fpcr"; break; - default: form = "'Xt, (unknown)"; break; - } - break; - } - case MSR: { - mnemonic = "msr"; - switch (instr->ImmSystemRegister()) { - case NZCV: form = "nzcv, 'Xt"; break; - case FPCR: form = "fpcr, 'Xt"; break; - default: form = "(unknown), 'Xt"; break; - } - break; - } - } - } else if (instr->Mask(SystemHintFMask) == SystemHintFixed) { - switch (instr->ImmHint()) { - case NOP: { - mnemonic = "nop"; - form = NULL; - break; - } - } - } else if (instr->Mask(MemBarrierFMask) == MemBarrierFixed) { - switch (instr->Mask(MemBarrierMask)) { - case DMB: { - mnemonic = "dmb"; - form = "'M"; - break; - } - case DSB: { - mnemonic = "dsb"; - form = "'M"; - break; - } - case ISB: { - mnemonic = "isb"; - form = NULL; - break; - } - } - } - - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitException(const Instruction* instr) { - const char *mnemonic = "unimplemented"; - const char *form = "'IDebug"; - - switch (instr->Mask(ExceptionMask)) { - case HLT: mnemonic = "hlt"; break; - case BRK: mnemonic = "brk"; break; - case SVC: mnemonic = "svc"; break; - case HVC: mnemonic = "hvc"; break; - case SMC: mnemonic = "smc"; break; - case DCPS1: mnemonic = "dcps1"; form = "{'IDebug}"; break; - case DCPS2: mnemonic = "dcps2"; form = "{'IDebug}"; break; - case DCPS3: mnemonic = "dcps3"; form = "{'IDebug}"; break; - default: form = "(Exception)"; - } - Format(instr, mnemonic, form); -} - - -void Disassembler::VisitUnimplemented(const Instruction* instr) { - Format(instr, "unimplemented", "(Unimplemented)"); -} - - -void Disassembler::VisitUnallocated(const Instruction* instr) { - Format(instr, "unallocated", "(Unallocated)"); -} - - -void Disassembler::ProcessOutput(const Instruction* /*instr*/) { - // The base disasm does nothing more than disassembling into a buffer. -} - - -void Disassembler::AppendRegisterNameToOutput(const Instruction* instr, - const CPURegister& reg) { - USE(instr); - VIXL_ASSERT(reg.IsValid()); - char reg_char; - - if (reg.IsRegister()) { - reg_char = reg.Is64Bits() ? 'x' : 'w'; - } else { - VIXL_ASSERT(reg.IsFPRegister()); - reg_char = reg.Is64Bits() ? 'd' : 's'; - } - - if (reg.IsFPRegister() || !(reg.Aliases(sp) || reg.Aliases(xzr))) { - // A normal register: w0 - w30, x0 - x30, s0 - s31, d0 - d31. - AppendToOutput("%c%d", reg_char, reg.code()); - } else if (reg.Aliases(sp)) { - // Disassemble w31/x31 as stack pointer wsp/sp. - AppendToOutput("%s", reg.Is64Bits() ? "sp" : "wsp"); - } else { - // Disassemble w31/x31 as zero register wzr/xzr. - AppendToOutput("%czr", reg_char); - } -} - - -void Disassembler::AppendPCRelativeOffsetToOutput(const Instruction* instr, - int64_t offset) { - USE(instr); - char sign = (offset < 0) ? '-' : '+'; - AppendToOutput("#%c0x%" PRIx64, sign, std::abs(offset)); -} - - -void Disassembler::AppendAddressToOutput(const Instruction* instr, - const void* addr) { - USE(instr); - AppendToOutput("(addr 0x%" PRIxPTR ")", reinterpret_cast<uintptr_t>(addr)); -} - - -void Disassembler::AppendCodeAddressToOutput(const Instruction* instr, - const void* addr) { - AppendAddressToOutput(instr, addr); -} - - -void Disassembler::AppendDataAddressToOutput(const Instruction* instr, - const void* addr) { - AppendAddressToOutput(instr, addr); -} - - -void Disassembler::AppendCodeRelativeAddressToOutput(const Instruction* instr, - const void* addr) { - USE(instr); - int64_t rel_addr = CodeRelativeAddress(addr); - if (rel_addr >= 0) { - AppendToOutput("(addr 0x%" PRIx64 ")", rel_addr); - } else { - AppendToOutput("(addr -0x%" PRIx64 ")", -rel_addr); - } -} - - -void Disassembler::AppendCodeRelativeCodeAddressToOutput( - const Instruction* instr, const void* addr) { - AppendCodeRelativeAddressToOutput(instr, addr); -} - - -void Disassembler::AppendCodeRelativeDataAddressToOutput( - const Instruction* instr, const void* addr) { - AppendCodeRelativeAddressToOutput(instr, addr); -} - - -void Disassembler::MapCodeAddress(int64_t base_address, - const Instruction* instr_address) { - set_code_address_offset( - base_address - reinterpret_cast<intptr_t>(instr_address)); -} -int64_t Disassembler::CodeRelativeAddress(const void* addr) { - return reinterpret_cast<intptr_t>(addr) + code_address_offset(); -} - - -void Disassembler::Format(const Instruction* instr, const char* mnemonic, - const char* format) { - VIXL_ASSERT(mnemonic != NULL); - ResetOutput(); - Substitute(instr, mnemonic); - if (format != NULL) { - buffer_[buffer_pos_++] = ' '; - Substitute(instr, format); - } - buffer_[buffer_pos_] = 0; - ProcessOutput(instr); -} - - -void Disassembler::Substitute(const Instruction* instr, const char* string) { - char chr = *string++; - while (chr != '\0') { - if (chr == '\'') { - string += SubstituteField(instr, string); - } else { - buffer_[buffer_pos_++] = chr; - } - chr = *string++; - } -} - - -int Disassembler::SubstituteField(const Instruction* instr, - const char* format) { - switch (format[0]) { - case 'R': // Register. X or W, selected by sf bit. - case 'F': // FP Register. S or D, selected by type field. - case 'W': - case 'X': - case 'S': - case 'D': return SubstituteRegisterField(instr, format); - case 'I': return SubstituteImmediateField(instr, format); - case 'L': return SubstituteLiteralField(instr, format); - case 'H': return SubstituteShiftField(instr, format); - case 'P': return SubstitutePrefetchField(instr, format); - case 'C': return SubstituteConditionField(instr, format); - case 'E': return SubstituteExtendField(instr, format); - case 'A': return SubstitutePCRelAddressField(instr, format); - case 'B': return SubstituteBranchTargetField(instr, format); - case 'O': return SubstituteLSRegOffsetField(instr, format); - case 'M': return SubstituteBarrierField(instr, format); - default: { - VIXL_UNREACHABLE(); - return 1; - } - } -} - - -int Disassembler::SubstituteRegisterField(const Instruction* instr, - const char* format) { - unsigned reg_num = 0; - unsigned field_len = 2; - switch (format[1]) { - case 'd': reg_num = instr->Rd(); break; - case 'n': reg_num = instr->Rn(); break; - case 'm': reg_num = instr->Rm(); break; - case 'a': reg_num = instr->Ra(); break; - case 's': reg_num = instr->Rs(); break; - case 't': { - if (format[2] == '2') { - reg_num = instr->Rt2(); - field_len = 3; - } else { - reg_num = instr->Rt(); - } - break; - } - default: VIXL_UNREACHABLE(); - } - - // Increase field length for registers tagged as stack. - if (format[2] == 's') { - field_len = 3; - } - - CPURegister::RegisterType reg_type; - unsigned reg_size; - - if (format[0] == 'R') { - // Register type is R: use sf bit to choose X and W. - reg_type = CPURegister::kRegister; - reg_size = instr->SixtyFourBits() ? kXRegSize : kWRegSize; - } else if (format[0] == 'F') { - // Floating-point register: use type field to choose S or D. - reg_type = CPURegister::kFPRegister; - reg_size = ((instr->FPType() & 1) == 0) ? kSRegSize : kDRegSize; - } else { - // The register type is specified. - switch (format[0]) { - case 'W': - reg_type = CPURegister::kRegister; reg_size = kWRegSize; break; - case 'X': - reg_type = CPURegister::kRegister; reg_size = kXRegSize; break; - case 'S': - reg_type = CPURegister::kFPRegister; reg_size = kSRegSize; break; - case 'D': - reg_type = CPURegister::kFPRegister; reg_size = kDRegSize; break; - default: - VIXL_UNREACHABLE(); - reg_type = CPURegister::kRegister; - reg_size = kXRegSize; - } - } - - if ((reg_type == CPURegister::kRegister) && - (reg_num == kZeroRegCode) && (format[2] == 's')) { - reg_num = kSPRegInternalCode; - } - - AppendRegisterNameToOutput(instr, CPURegister(reg_num, reg_size, reg_type)); - - return field_len; -} - - -int Disassembler::SubstituteImmediateField(const Instruction* instr, - const char* format) { - VIXL_ASSERT(format[0] == 'I'); - - switch (format[1]) { - case 'M': { // IMoveImm, IMoveNeg or IMoveLSL. - if (format[5] == 'L') { - AppendToOutput("#0x%" PRIx64, instr->ImmMoveWide()); - if (instr->ShiftMoveWide() > 0) { - AppendToOutput(", lsl #%" PRId64, 16 * instr->ShiftMoveWide()); - } - } else { - VIXL_ASSERT((format[5] == 'I') || (format[5] == 'N')); - uint64_t imm = instr->ImmMoveWide() << (16 * instr->ShiftMoveWide()); - if (format[5] == 'N') - imm = ~imm; - if (!instr->SixtyFourBits()) - imm &= UINT64_C(0xffffffff); - AppendToOutput("#0x%" PRIx64, imm); - } - return 8; - } - case 'L': { - switch (format[2]) { - case 'L': { // ILLiteral - Immediate Load Literal. - AppendToOutput("pc%+" PRId64, - instr->ImmLLiteral() << kLiteralEntrySizeLog2); - return 9; - } - case 'S': { // ILS - Immediate Load/Store. - if (instr->ImmLS() != 0) { - AppendToOutput(", #%" PRId64, instr->ImmLS()); - } - return 3; - } - case 'P': { // ILPx - Immediate Load/Store Pair, x = access size. - if (instr->ImmLSPair() != 0) { - // format[3] is the scale value. Convert to a number. - int scale = format[3] - 0x30; - AppendToOutput(", #%" PRId64, instr->ImmLSPair() * scale); - } - return 4; - } - case 'U': { // ILU - Immediate Load/Store Unsigned. - if (instr->ImmLSUnsigned() != 0) { - AppendToOutput(", #%" PRIu64, - instr->ImmLSUnsigned() << instr->SizeLS()); - } - return 3; - } - } - } - case 'C': { // ICondB - Immediate Conditional Branch. - int64_t offset = instr->ImmCondBranch() << 2; - AppendPCRelativeOffsetToOutput(instr, offset); - return 6; - } - case 'A': { // IAddSub. - VIXL_ASSERT(instr->ShiftAddSub() <= 1); - int64_t imm = instr->ImmAddSub() << (12 * instr->ShiftAddSub()); - AppendToOutput("#0x%" PRIx64 " (%" PRId64 ")", imm, imm); - return 7; - } - case 'F': { // IFPSingle, IFPDouble or IFPFBits. - if (format[3] == 'F') { // IFPFbits. - AppendToOutput("#%" PRId64, 64 - instr->FPScale()); - return 8; - } else { - AppendToOutput("#0x%" PRIx64 " (%.4f)", instr->ImmFP(), - format[3] == 'S' ? instr->ImmFP32() : instr->ImmFP64()); - return 9; - } - } - case 'T': { // ITri - Immediate Triangular Encoded. - AppendToOutput("#0x%" PRIx64, instr->ImmLogical()); - return 4; - } - case 'N': { // INzcv. - int nzcv = (instr->Nzcv() << Flags_offset); - AppendToOutput("#%c%c%c%c", ((nzcv & NFlag) == 0) ? 'n' : 'N', - ((nzcv & ZFlag) == 0) ? 'z' : 'Z', - ((nzcv & CFlag) == 0) ? 'c' : 'C', - ((nzcv & VFlag) == 0) ? 'v' : 'V'); - return 5; - } - case 'P': { // IP - Conditional compare. - AppendToOutput("#%" PRId64, instr->ImmCondCmp()); - return 2; - } - case 'B': { // Bitfields. - return SubstituteBitfieldImmediateField(instr, format); - } - case 'E': { // IExtract. - AppendToOutput("#%" PRId64, instr->ImmS()); - return 8; - } - case 'S': { // IS - Test and branch bit. - AppendToOutput("#%" PRId64, (instr->ImmTestBranchBit5() << 5) | - instr->ImmTestBranchBit40()); - return 2; - } - case 'D': { // IDebug - HLT and BRK instructions. - AppendToOutput("#0x%" PRIx64, instr->ImmException()); - return 6; - } - case 'X': { // IX - CLREX instruction. - AppendToOutput("#0x%" PRIx64, instr->CRm()); - return 2; - } - default: { - VIXL_UNIMPLEMENTED(); - return 0; - } - } -} - - -int Disassembler::SubstituteBitfieldImmediateField(const Instruction* instr, - const char* format) { - VIXL_ASSERT((format[0] == 'I') && (format[1] == 'B')); - unsigned r = instr->ImmR(); - unsigned s = instr->ImmS(); - - switch (format[2]) { - case 'r': { // IBr. - AppendToOutput("#%d", r); - return 3; - } - case 's': { // IBs+1 or IBs-r+1. - if (format[3] == '+') { - AppendToOutput("#%d", s + 1); - return 5; - } else { - VIXL_ASSERT(format[3] == '-'); - AppendToOutput("#%d", s - r + 1); - return 7; - } - } - case 'Z': { // IBZ-r. - VIXL_ASSERT((format[3] == '-') && (format[4] == 'r')); - unsigned reg_size = (instr->SixtyFourBits() == 1) ? kXRegSize : kWRegSize; - AppendToOutput("#%d", reg_size - r); - return 5; - } - default: { - VIXL_UNREACHABLE(); - return 0; - } - } -} - - -int Disassembler::SubstituteLiteralField(const Instruction* instr, - const char* format) { - VIXL_ASSERT(strncmp(format, "LValue", 6) == 0); - USE(format); - - const void * address = instr->LiteralAddress<const void *>(); - switch (instr->Mask(LoadLiteralMask)) { - case LDR_w_lit: - case LDR_x_lit: - case LDRSW_x_lit: - case LDR_s_lit: - case LDR_d_lit: - AppendCodeRelativeDataAddressToOutput(instr, address); - break; - case PRFM_lit: { - // Use the prefetch hint to decide how to print the address. - switch (instr->PrefetchHint()) { - case 0x0: // PLD: prefetch for load. - case 0x2: // PST: prepare for store. - AppendCodeRelativeDataAddressToOutput(instr, address); - break; - case 0x1: // PLI: preload instructions. - AppendCodeRelativeCodeAddressToOutput(instr, address); - break; - case 0x3: // Unallocated hint. - AppendCodeRelativeAddressToOutput(instr, address); - break; - } - break; - } - default: - VIXL_UNREACHABLE(); - } - - return 6; -} - - -int Disassembler::SubstituteShiftField(const Instruction* instr, - const char* format) { - VIXL_ASSERT(format[0] == 'H'); - VIXL_ASSERT(instr->ShiftDP() <= 0x3); - - switch (format[1]) { - case 'D': { // HDP. - VIXL_ASSERT(instr->ShiftDP() != ROR); - } // Fall through. - case 'L': { // HLo. - if (instr->ImmDPShift() != 0) { - const char* shift_type[] = {"lsl", "lsr", "asr", "ror"}; - AppendToOutput(", %s #%" PRId64, shift_type[instr->ShiftDP()], - instr->ImmDPShift()); - } - return 3; - } - default: - VIXL_UNIMPLEMENTED(); - return 0; - } -} - - -int Disassembler::SubstituteConditionField(const Instruction* instr, - const char* format) { - VIXL_ASSERT(format[0] == 'C'); - const char* condition_code[] = { "eq", "ne", "hs", "lo", - "mi", "pl", "vs", "vc", - "hi", "ls", "ge", "lt", - "gt", "le", "al", "nv" }; - int cond; - switch (format[1]) { - case 'B': cond = instr->ConditionBranch(); break; - case 'I': { - cond = InvertCondition(static_cast<Condition>(instr->Condition())); - break; - } - default: cond = instr->Condition(); - } - AppendToOutput("%s", condition_code[cond]); - return 4; -} - - -int Disassembler::SubstitutePCRelAddressField(const Instruction* instr, - const char* format) { - VIXL_ASSERT((strcmp(format, "AddrPCRelByte") == 0) || // Used by `adr`. - (strcmp(format, "AddrPCRelPage") == 0)); // Used by `adrp`. - - int64_t offset = instr->ImmPCRel(); - - // Compute the target address based on the effective address (after applying - // code_address_offset). This is required for correct behaviour of adrp. - const Instruction* base = instr + code_address_offset(); - if (format[9] == 'P') { - offset *= kPageSize; - base = AlignDown(base, kPageSize); - } - // Strip code_address_offset before printing, so we can use the - // semantically-correct AppendCodeRelativeAddressToOutput. - const void* target = - reinterpret_cast<const void*>(base + offset - code_address_offset()); - - AppendPCRelativeOffsetToOutput(instr, offset); - AppendToOutput(" "); - AppendCodeRelativeAddressToOutput(instr, target); - return 13; -} - - -int Disassembler::SubstituteBranchTargetField(const Instruction* instr, - const char* format) { - VIXL_ASSERT(strncmp(format, "BImm", 4) == 0); - - int64_t offset = 0; - switch (format[5]) { - // BImmUncn - unconditional branch immediate. - case 'n': offset = instr->ImmUncondBranch(); break; - // BImmCond - conditional branch immediate. - case 'o': offset = instr->ImmCondBranch(); break; - // BImmCmpa - compare and branch immediate. - case 'm': offset = instr->ImmCmpBranch(); break; - // BImmTest - test and branch immediate. - case 'e': offset = instr->ImmTestBranch(); break; - default: VIXL_UNIMPLEMENTED(); - } - offset <<= kInstructionSizeLog2; - const void* target_address = reinterpret_cast<const void*>(instr + offset); - VIXL_STATIC_ASSERT(sizeof(*instr) == 1); - - AppendPCRelativeOffsetToOutput(instr, offset); - AppendToOutput(" "); - AppendCodeRelativeCodeAddressToOutput(instr, target_address); - - return 8; -} - - -int Disassembler::SubstituteExtendField(const Instruction* instr, - const char* format) { - VIXL_ASSERT(strncmp(format, "Ext", 3) == 0); - VIXL_ASSERT(instr->ExtendMode() <= 7); - USE(format); - - const char* extend_mode[] = { "uxtb", "uxth", "uxtw", "uxtx", - "sxtb", "sxth", "sxtw", "sxtx" }; - - // If rd or rn is SP, uxtw on 32-bit registers and uxtx on 64-bit - // registers becomes lsl. - if (((instr->Rd() == kZeroRegCode) || (instr->Rn() == kZeroRegCode)) && - (((instr->ExtendMode() == UXTW) && (instr->SixtyFourBits() == 0)) || - (instr->ExtendMode() == UXTX))) { - if (instr->ImmExtendShift() > 0) { - AppendToOutput(", lsl #%" PRId64, instr->ImmExtendShift()); - } - } else { - AppendToOutput(", %s", extend_mode[instr->ExtendMode()]); - if (instr->ImmExtendShift() > 0) { - AppendToOutput(" #%" PRId64, instr->ImmExtendShift()); - } - } - return 3; -} - - -int Disassembler::SubstituteLSRegOffsetField(const Instruction* instr, - const char* format) { - VIXL_ASSERT(strncmp(format, "Offsetreg", 9) == 0); - const char* extend_mode[] = { "undefined", "undefined", "uxtw", "lsl", - "undefined", "undefined", "sxtw", "sxtx" }; - USE(format); - - unsigned shift = instr->ImmShiftLS(); - Extend ext = static_cast<Extend>(instr->ExtendMode()); - char reg_type = ((ext == UXTW) || (ext == SXTW)) ? 'w' : 'x'; - - unsigned rm = instr->Rm(); - if (rm == kZeroRegCode) { - AppendToOutput("%czr", reg_type); - } else { - AppendToOutput("%c%d", reg_type, rm); - } - - // Extend mode UXTX is an alias for shift mode LSL here. - if (!((ext == UXTX) && (shift == 0))) { - AppendToOutput(", %s", extend_mode[ext]); - if (shift != 0) { - AppendToOutput(" #%" PRId64, instr->SizeLS()); - } - } - return 9; -} - - -int Disassembler::SubstitutePrefetchField(const Instruction* instr, - const char* format) { - VIXL_ASSERT(format[0] == 'P'); - USE(format); - - static const char* hints[] = {"ld", "li", "st"}; - static const char* stream_options[] = {"keep", "strm"}; - - unsigned hint = instr->PrefetchHint(); - unsigned target = instr->PrefetchTarget() + 1; - unsigned stream = instr->PrefetchStream(); - - if ((hint >= (sizeof(hints) / sizeof(hints[0]))) || (target > 3)) { - // Unallocated prefetch operations. - int prefetch_mode = instr->ImmPrefetchOperation(); - AppendToOutput("#0b%c%c%c%c%c", - (prefetch_mode & (1 << 4)) ? '1' : '0', - (prefetch_mode & (1 << 3)) ? '1' : '0', - (prefetch_mode & (1 << 2)) ? '1' : '0', - (prefetch_mode & (1 << 1)) ? '1' : '0', - (prefetch_mode & (1 << 0)) ? '1' : '0'); - } else { - VIXL_ASSERT(stream < (sizeof(stream_options) / sizeof(stream_options[0]))); - AppendToOutput("p%sl%d%s", hints[hint], target, stream_options[stream]); - } - return 6; -} - -int Disassembler::SubstituteBarrierField(const Instruction* instr, - const char* format) { - VIXL_ASSERT(format[0] == 'M'); - USE(format); - - static const char* options[4][4] = { - { "sy (0b0000)", "oshld", "oshst", "osh" }, - { "sy (0b0100)", "nshld", "nshst", "nsh" }, - { "sy (0b1000)", "ishld", "ishst", "ish" }, - { "sy (0b1100)", "ld", "st", "sy" } - }; - int domain = instr->ImmBarrierDomain(); - int type = instr->ImmBarrierType(); - - AppendToOutput("%s", options[domain][type]); - return 1; -} - -void Disassembler::ResetOutput() { - buffer_pos_ = 0; - buffer_[buffer_pos_] = 0; -} - - -void Disassembler::AppendToOutput(const char* format, ...) { - va_list args; - va_start(args, format); - buffer_pos_ += vsnprintf(&buffer_[buffer_pos_], buffer_size_, format, args); - va_end(args); -} - - -void PrintDisassembler::ProcessOutput(const Instruction* instr) { - fprintf(stream_, "0x%016" PRIx64 " %08" PRIx32 "\t\t%s\n", - reinterpret_cast<uint64_t>(instr), - instr->InstructionBits(), - GetOutput()); -} -} // namespace vixl diff --git a/qemu/disas/libvixl/a64/instructions-a64.cc b/qemu/disas/libvixl/a64/instructions-a64.cc deleted file mode 100644 index b09188683..000000000 --- a/qemu/disas/libvixl/a64/instructions-a64.cc +++ /dev/null @@ -1,314 +0,0 @@ -// Copyright 2013, ARM Limited -// All rights reserved. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are met: -// -// * Redistributions of source code must retain the above copyright notice, -// this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above copyright notice, -// this list of conditions and the following disclaimer in the documentation -// and/or other materials provided with the distribution. -// * Neither the name of ARM Limited nor the names of its contributors may be -// used to endorse or promote products derived from this software without -// specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND -// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED -// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE -// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE -// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL -// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR -// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER -// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, -// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -#include "a64/instructions-a64.h" -#include "a64/assembler-a64.h" - -namespace vixl { - - -// Floating-point infinity values. -const float kFP32PositiveInfinity = rawbits_to_float(0x7f800000); -const float kFP32NegativeInfinity = rawbits_to_float(0xff800000); -const double kFP64PositiveInfinity = - rawbits_to_double(UINT64_C(0x7ff0000000000000)); -const double kFP64NegativeInfinity = - rawbits_to_double(UINT64_C(0xfff0000000000000)); - - -// The default NaN values (for FPCR.DN=1). -const double kFP64DefaultNaN = rawbits_to_double(UINT64_C(0x7ff8000000000000)); -const float kFP32DefaultNaN = rawbits_to_float(0x7fc00000); - - -static uint64_t RotateRight(uint64_t value, - unsigned int rotate, - unsigned int width) { - VIXL_ASSERT(width <= 64); - rotate &= 63; - return ((value & ((UINT64_C(1) << rotate) - 1)) << - (width - rotate)) | (value >> rotate); -} - - -static uint64_t RepeatBitsAcrossReg(unsigned reg_size, - uint64_t value, - unsigned width) { - VIXL_ASSERT((width == 2) || (width == 4) || (width == 8) || (width == 16) || - (width == 32)); - VIXL_ASSERT((reg_size == kWRegSize) || (reg_size == kXRegSize)); - uint64_t result = value & ((UINT64_C(1) << width) - 1); - for (unsigned i = width; i < reg_size; i *= 2) { - result |= (result << i); - } - return result; -} - - -bool Instruction::IsLoad() const { - if (Mask(LoadStoreAnyFMask) != LoadStoreAnyFixed) { - return false; - } - - if (Mask(LoadStorePairAnyFMask) == LoadStorePairAnyFixed) { - return Mask(LoadStorePairLBit) != 0; - } else { - LoadStoreOp op = static_cast<LoadStoreOp>(Mask(LoadStoreOpMask)); - switch (op) { - case LDRB_w: - case LDRH_w: - case LDR_w: - case LDR_x: - case LDRSB_w: - case LDRSB_x: - case LDRSH_w: - case LDRSH_x: - case LDRSW_x: - case LDR_s: - case LDR_d: return true; - default: return false; - } - } -} - - -bool Instruction::IsStore() const { - if (Mask(LoadStoreAnyFMask) != LoadStoreAnyFixed) { - return false; - } - - if (Mask(LoadStorePairAnyFMask) == LoadStorePairAnyFixed) { - return Mask(LoadStorePairLBit) == 0; - } else { - LoadStoreOp op = static_cast<LoadStoreOp>(Mask(LoadStoreOpMask)); - switch (op) { - case STRB_w: - case STRH_w: - case STR_w: - case STR_x: - case STR_s: - case STR_d: return true; - default: return false; - } - } -} - - -// Logical immediates can't encode zero, so a return value of zero is used to -// indicate a failure case. Specifically, where the constraints on imm_s are -// not met. -uint64_t Instruction::ImmLogical() const { - unsigned reg_size = SixtyFourBits() ? kXRegSize : kWRegSize; - int64_t n = BitN(); - int64_t imm_s = ImmSetBits(); - int64_t imm_r = ImmRotate(); - - // An integer is constructed from the n, imm_s and imm_r bits according to - // the following table: - // - // N imms immr size S R - // 1 ssssss rrrrrr 64 UInt(ssssss) UInt(rrrrrr) - // 0 0sssss xrrrrr 32 UInt(sssss) UInt(rrrrr) - // 0 10ssss xxrrrr 16 UInt(ssss) UInt(rrrr) - // 0 110sss xxxrrr 8 UInt(sss) UInt(rrr) - // 0 1110ss xxxxrr 4 UInt(ss) UInt(rr) - // 0 11110s xxxxxr 2 UInt(s) UInt(r) - // (s bits must not be all set) - // - // A pattern is constructed of size bits, where the least significant S+1 - // bits are set. The pattern is rotated right by R, and repeated across a - // 32 or 64-bit value, depending on destination register width. - // - - if (n == 1) { - if (imm_s == 0x3F) { - return 0; - } - uint64_t bits = (UINT64_C(1) << (imm_s + 1)) - 1; - return RotateRight(bits, imm_r, 64); - } else { - if ((imm_s >> 1) == 0x1F) { - return 0; - } - for (int width = 0x20; width >= 0x2; width >>= 1) { - if ((imm_s & width) == 0) { - int mask = width - 1; - if ((imm_s & mask) == mask) { - return 0; - } - uint64_t bits = (UINT64_C(1) << ((imm_s & mask) + 1)) - 1; - return RepeatBitsAcrossReg(reg_size, - RotateRight(bits, imm_r & mask, width), - width); - } - } - } - VIXL_UNREACHABLE(); - return 0; -} - - -float Instruction::ImmFP32() const { - // ImmFP: abcdefgh (8 bits) - // Single: aBbb.bbbc.defg.h000.0000.0000.0000.0000 (32 bits) - // where B is b ^ 1 - uint32_t bits = ImmFP(); - uint32_t bit7 = (bits >> 7) & 0x1; - uint32_t bit6 = (bits >> 6) & 0x1; - uint32_t bit5_to_0 = bits & 0x3f; - uint32_t result = (bit7 << 31) | ((32 - bit6) << 25) | (bit5_to_0 << 19); - - return rawbits_to_float(result); -} - - -double Instruction::ImmFP64() const { - // ImmFP: abcdefgh (8 bits) - // Double: aBbb.bbbb.bbcd.efgh.0000.0000.0000.0000 - // 0000.0000.0000.0000.0000.0000.0000.0000 (64 bits) - // where B is b ^ 1 - uint32_t bits = ImmFP(); - uint64_t bit7 = (bits >> 7) & 0x1; - uint64_t bit6 = (bits >> 6) & 0x1; - uint64_t bit5_to_0 = bits & 0x3f; - uint64_t result = (bit7 << 63) | ((256 - bit6) << 54) | (bit5_to_0 << 48); - - return rawbits_to_double(result); -} - - -LSDataSize CalcLSPairDataSize(LoadStorePairOp op) { - switch (op) { - case STP_x: - case LDP_x: - case STP_d: - case LDP_d: return LSDoubleWord; - default: return LSWord; - } -} - - -const Instruction* Instruction::ImmPCOffsetTarget() const { - const Instruction * base = this; - ptrdiff_t offset; - if (IsPCRelAddressing()) { - // ADR and ADRP. - offset = ImmPCRel(); - if (Mask(PCRelAddressingMask) == ADRP) { - base = AlignDown(base, kPageSize); - offset *= kPageSize; - } else { - VIXL_ASSERT(Mask(PCRelAddressingMask) == ADR); - } - } else { - // All PC-relative branches. - VIXL_ASSERT(BranchType() != UnknownBranchType); - // Relative branch offsets are instruction-size-aligned. - offset = ImmBranch() << kInstructionSizeLog2; - } - return base + offset; -} - - -inline int Instruction::ImmBranch() const { - switch (BranchType()) { - case CondBranchType: return ImmCondBranch(); - case UncondBranchType: return ImmUncondBranch(); - case CompareBranchType: return ImmCmpBranch(); - case TestBranchType: return ImmTestBranch(); - default: VIXL_UNREACHABLE(); - } - return 0; -} - - -void Instruction::SetImmPCOffsetTarget(const Instruction* target) { - if (IsPCRelAddressing()) { - SetPCRelImmTarget(target); - } else { - SetBranchImmTarget(target); - } -} - - -void Instruction::SetPCRelImmTarget(const Instruction* target) { - int32_t imm21; - if ((Mask(PCRelAddressingMask) == ADR)) { - imm21 = target - this; - } else { - VIXL_ASSERT(Mask(PCRelAddressingMask) == ADRP); - uintptr_t this_page = reinterpret_cast<uintptr_t>(this) / kPageSize; - uintptr_t target_page = reinterpret_cast<uintptr_t>(target) / kPageSize; - imm21 = target_page - this_page; - } - Instr imm = Assembler::ImmPCRelAddress(imm21); - - SetInstructionBits(Mask(~ImmPCRel_mask) | imm); -} - - -void Instruction::SetBranchImmTarget(const Instruction* target) { - VIXL_ASSERT(((target - this) & 3) == 0); - Instr branch_imm = 0; - uint32_t imm_mask = 0; - int offset = (target - this) >> kInstructionSizeLog2; - switch (BranchType()) { - case CondBranchType: { - branch_imm = Assembler::ImmCondBranch(offset); - imm_mask = ImmCondBranch_mask; - break; - } - case UncondBranchType: { - branch_imm = Assembler::ImmUncondBranch(offset); - imm_mask = ImmUncondBranch_mask; - break; - } - case CompareBranchType: { - branch_imm = Assembler::ImmCmpBranch(offset); - imm_mask = ImmCmpBranch_mask; - break; - } - case TestBranchType: { - branch_imm = Assembler::ImmTestBranch(offset); - imm_mask = ImmTestBranch_mask; - break; - } - default: VIXL_UNREACHABLE(); - } - SetInstructionBits(Mask(~imm_mask) | branch_imm); -} - - -void Instruction::SetImmLLiteral(const Instruction* source) { - VIXL_ASSERT(IsWordAligned(source)); - ptrdiff_t offset = (source - this) >> kLiteralEntrySizeLog2; - Instr imm = Assembler::ImmLLiteral(offset); - Instr mask = ImmLLiteral_mask; - - SetInstructionBits(Mask(~mask) | imm); -} -} // namespace vixl - diff --git a/qemu/disas/libvixl/a64/instructions-a64.h b/qemu/disas/libvixl/a64/instructions-a64.h deleted file mode 100644 index f1d883ccc..000000000 --- a/qemu/disas/libvixl/a64/instructions-a64.h +++ /dev/null @@ -1,384 +0,0 @@ -// Copyright 2013, ARM Limited -// All rights reserved. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are met: -// -// * Redistributions of source code must retain the above copyright notice, -// this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above copyright notice, -// this list of conditions and the following disclaimer in the documentation -// and/or other materials provided with the distribution. -// * Neither the name of ARM Limited nor the names of its contributors may be -// used to endorse or promote products derived from this software without -// specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND -// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED -// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE -// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE -// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL -// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR -// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER -// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, -// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -#ifndef VIXL_A64_INSTRUCTIONS_A64_H_ -#define VIXL_A64_INSTRUCTIONS_A64_H_ - -#include "globals.h" -#include "utils.h" -#include "a64/constants-a64.h" - -namespace vixl { -// ISA constants. -------------------------------------------------------------- - -typedef uint32_t Instr; -const unsigned kInstructionSize = 4; -const unsigned kInstructionSizeLog2 = 2; -const unsigned kLiteralEntrySize = 4; -const unsigned kLiteralEntrySizeLog2 = 2; -const unsigned kMaxLoadLiteralRange = 1 * MBytes; - -// This is the nominal page size (as used by the adrp instruction); the actual -// size of the memory pages allocated by the kernel is likely to differ. -const unsigned kPageSize = 4 * KBytes; -const unsigned kPageSizeLog2 = 12; - -const unsigned kWRegSize = 32; -const unsigned kWRegSizeLog2 = 5; -const unsigned kWRegSizeInBytes = kWRegSize / 8; -const unsigned kWRegSizeInBytesLog2 = kWRegSizeLog2 - 3; -const unsigned kXRegSize = 64; -const unsigned kXRegSizeLog2 = 6; -const unsigned kXRegSizeInBytes = kXRegSize / 8; -const unsigned kXRegSizeInBytesLog2 = kXRegSizeLog2 - 3; -const unsigned kSRegSize = 32; -const unsigned kSRegSizeLog2 = 5; -const unsigned kSRegSizeInBytes = kSRegSize / 8; -const unsigned kSRegSizeInBytesLog2 = kSRegSizeLog2 - 3; -const unsigned kDRegSize = 64; -const unsigned kDRegSizeLog2 = 6; -const unsigned kDRegSizeInBytes = kDRegSize / 8; -const unsigned kDRegSizeInBytesLog2 = kDRegSizeLog2 - 3; -const uint64_t kWRegMask = UINT64_C(0xffffffff); -const uint64_t kXRegMask = UINT64_C(0xffffffffffffffff); -const uint64_t kSRegMask = UINT64_C(0xffffffff); -const uint64_t kDRegMask = UINT64_C(0xffffffffffffffff); -const uint64_t kSSignMask = UINT64_C(0x80000000); -const uint64_t kDSignMask = UINT64_C(0x8000000000000000); -const uint64_t kWSignMask = UINT64_C(0x80000000); -const uint64_t kXSignMask = UINT64_C(0x8000000000000000); -const uint64_t kByteMask = UINT64_C(0xff); -const uint64_t kHalfWordMask = UINT64_C(0xffff); -const uint64_t kWordMask = UINT64_C(0xffffffff); -const uint64_t kXMaxUInt = UINT64_C(0xffffffffffffffff); -const uint64_t kWMaxUInt = UINT64_C(0xffffffff); -const int64_t kXMaxInt = INT64_C(0x7fffffffffffffff); -const int64_t kXMinInt = INT64_C(0x8000000000000000); -const int32_t kWMaxInt = INT32_C(0x7fffffff); -const int32_t kWMinInt = INT32_C(0x80000000); -const unsigned kLinkRegCode = 30; -const unsigned kZeroRegCode = 31; -const unsigned kSPRegInternalCode = 63; -const unsigned kRegCodeMask = 0x1f; - -const unsigned kAddressTagOffset = 56; -const unsigned kAddressTagWidth = 8; -const uint64_t kAddressTagMask = - ((UINT64_C(1) << kAddressTagWidth) - 1) << kAddressTagOffset; -VIXL_STATIC_ASSERT(kAddressTagMask == UINT64_C(0xff00000000000000)); - -// AArch64 floating-point specifics. These match IEEE-754. -const unsigned kDoubleMantissaBits = 52; -const unsigned kDoubleExponentBits = 11; -const unsigned kFloatMantissaBits = 23; -const unsigned kFloatExponentBits = 8; - -// Floating-point infinity values. -extern const float kFP32PositiveInfinity; -extern const float kFP32NegativeInfinity; -extern const double kFP64PositiveInfinity; -extern const double kFP64NegativeInfinity; - -// The default NaN values (for FPCR.DN=1). -extern const double kFP64DefaultNaN; -extern const float kFP32DefaultNaN; - - -enum LSDataSize { - LSByte = 0, - LSHalfword = 1, - LSWord = 2, - LSDoubleWord = 3 -}; - -LSDataSize CalcLSPairDataSize(LoadStorePairOp op); - -enum ImmBranchType { - UnknownBranchType = 0, - CondBranchType = 1, - UncondBranchType = 2, - CompareBranchType = 3, - TestBranchType = 4 -}; - -enum AddrMode { - Offset, - PreIndex, - PostIndex -}; - -enum FPRounding { - // The first four values are encodable directly by FPCR<RMode>. - FPTieEven = 0x0, - FPPositiveInfinity = 0x1, - FPNegativeInfinity = 0x2, - FPZero = 0x3, - - // The final rounding mode is only available when explicitly specified by the - // instruction (such as with fcvta). It cannot be set in FPCR. - FPTieAway -}; - -enum Reg31Mode { - Reg31IsStackPointer, - Reg31IsZeroRegister -}; - -// Instructions. --------------------------------------------------------------- - -class Instruction { - public: - Instr InstructionBits() const { - return *(reinterpret_cast<const Instr*>(this)); - } - - void SetInstructionBits(Instr new_instr) { - *(reinterpret_cast<Instr*>(this)) = new_instr; - } - - int Bit(int pos) const { - return (InstructionBits() >> pos) & 1; - } - - uint32_t Bits(int msb, int lsb) const { - return unsigned_bitextract_32(msb, lsb, InstructionBits()); - } - - int32_t SignedBits(int msb, int lsb) const { - int32_t bits = *(reinterpret_cast<const int32_t*>(this)); - return signed_bitextract_32(msb, lsb, bits); - } - - Instr Mask(uint32_t mask) const { - return InstructionBits() & mask; - } - - #define DEFINE_GETTER(Name, HighBit, LowBit, Func) \ - int64_t Name() const { return Func(HighBit, LowBit); } - INSTRUCTION_FIELDS_LIST(DEFINE_GETTER) - #undef DEFINE_GETTER - - // ImmPCRel is a compound field (not present in INSTRUCTION_FIELDS_LIST), - // formed from ImmPCRelLo and ImmPCRelHi. - int ImmPCRel() const { - int const offset = ((ImmPCRelHi() << ImmPCRelLo_width) | ImmPCRelLo()); - int const width = ImmPCRelLo_width + ImmPCRelHi_width; - return signed_bitextract_32(width-1, 0, offset); - } - - uint64_t ImmLogical() const; - float ImmFP32() const; - double ImmFP64() const; - - LSDataSize SizeLSPair() const { - return CalcLSPairDataSize( - static_cast<LoadStorePairOp>(Mask(LoadStorePairMask))); - } - - // Helpers. - bool IsCondBranchImm() const { - return Mask(ConditionalBranchFMask) == ConditionalBranchFixed; - } - - bool IsUncondBranchImm() const { - return Mask(UnconditionalBranchFMask) == UnconditionalBranchFixed; - } - - bool IsCompareBranch() const { - return Mask(CompareBranchFMask) == CompareBranchFixed; - } - - bool IsTestBranch() const { - return Mask(TestBranchFMask) == TestBranchFixed; - } - - bool IsPCRelAddressing() const { - return Mask(PCRelAddressingFMask) == PCRelAddressingFixed; - } - - bool IsLogicalImmediate() const { - return Mask(LogicalImmediateFMask) == LogicalImmediateFixed; - } - - bool IsAddSubImmediate() const { - return Mask(AddSubImmediateFMask) == AddSubImmediateFixed; - } - - bool IsAddSubExtended() const { - return Mask(AddSubExtendedFMask) == AddSubExtendedFixed; - } - - bool IsLoadOrStore() const { - return Mask(LoadStoreAnyFMask) == LoadStoreAnyFixed; - } - - bool IsLoad() const; - bool IsStore() const; - - bool IsLoadLiteral() const { - // This includes PRFM_lit. - return Mask(LoadLiteralFMask) == LoadLiteralFixed; - } - - bool IsMovn() const { - return (Mask(MoveWideImmediateMask) == MOVN_x) || - (Mask(MoveWideImmediateMask) == MOVN_w); - } - - // Indicate whether Rd can be the stack pointer or the zero register. This - // does not check that the instruction actually has an Rd field. - Reg31Mode RdMode() const { - // The following instructions use sp or wsp as Rd: - // Add/sub (immediate) when not setting the flags. - // Add/sub (extended) when not setting the flags. - // Logical (immediate) when not setting the flags. - // Otherwise, r31 is the zero register. - if (IsAddSubImmediate() || IsAddSubExtended()) { - if (Mask(AddSubSetFlagsBit)) { - return Reg31IsZeroRegister; - } else { - return Reg31IsStackPointer; - } - } - if (IsLogicalImmediate()) { - // Of the logical (immediate) instructions, only ANDS (and its aliases) - // can set the flags. The others can all write into sp. - // Note that some logical operations are not available to - // immediate-operand instructions, so we have to combine two masks here. - if (Mask(LogicalImmediateMask & LogicalOpMask) == ANDS) { - return Reg31IsZeroRegister; - } else { - return Reg31IsStackPointer; - } - } - return Reg31IsZeroRegister; - } - - // Indicate whether Rn can be the stack pointer or the zero register. This - // does not check that the instruction actually has an Rn field. - Reg31Mode RnMode() const { - // The following instructions use sp or wsp as Rn: - // All loads and stores. - // Add/sub (immediate). - // Add/sub (extended). - // Otherwise, r31 is the zero register. - if (IsLoadOrStore() || IsAddSubImmediate() || IsAddSubExtended()) { - return Reg31IsStackPointer; - } - return Reg31IsZeroRegister; - } - - ImmBranchType BranchType() const { - if (IsCondBranchImm()) { - return CondBranchType; - } else if (IsUncondBranchImm()) { - return UncondBranchType; - } else if (IsCompareBranch()) { - return CompareBranchType; - } else if (IsTestBranch()) { - return TestBranchType; - } else { - return UnknownBranchType; - } - } - - // Find the target of this instruction. 'this' may be a branch or a - // PC-relative addressing instruction. - const Instruction* ImmPCOffsetTarget() const; - - // Patch a PC-relative offset to refer to 'target'. 'this' may be a branch or - // a PC-relative addressing instruction. - void SetImmPCOffsetTarget(const Instruction* target); - // Patch a literal load instruction to load from 'source'. - void SetImmLLiteral(const Instruction* source); - - // Calculate the address of a literal referred to by a load-literal - // instruction, and return it as the specified type. - // - // The literal itself is safely mutable only if the backing buffer is safely - // mutable. - template <typename T> - T LiteralAddress() const { - uint64_t base_raw = reinterpret_cast<uintptr_t>(this); - ptrdiff_t offset = ImmLLiteral() << kLiteralEntrySizeLog2; - uint64_t address_raw = base_raw + offset; - - // Cast the address using a C-style cast. A reinterpret_cast would be - // appropriate, but it can't cast one integral type to another. - T address = (T)(address_raw); - - // Assert that the address can be represented by the specified type. - VIXL_ASSERT((uint64_t)(address) == address_raw); - - return address; - } - - uint32_t Literal32() const { - uint32_t literal; - memcpy(&literal, LiteralAddress<const void*>(), sizeof(literal)); - return literal; - } - - uint64_t Literal64() const { - uint64_t literal; - memcpy(&literal, LiteralAddress<const void*>(), sizeof(literal)); - return literal; - } - - float LiteralFP32() const { - return rawbits_to_float(Literal32()); - } - - double LiteralFP64() const { - return rawbits_to_double(Literal64()); - } - - const Instruction* NextInstruction() const { - return this + kInstructionSize; - } - - const Instruction* InstructionAtOffset(int64_t offset) const { - VIXL_ASSERT(IsWordAligned(this + offset)); - return this + offset; - } - - template<typename T> static Instruction* Cast(T src) { - return reinterpret_cast<Instruction*>(src); - } - - template<typename T> static const Instruction* CastConst(T src) { - return reinterpret_cast<const Instruction*>(src); - } - - private: - int ImmBranch() const; - - void SetPCRelImmTarget(const Instruction* target); - void SetBranchImmTarget(const Instruction* target); -}; -} // namespace vixl - -#endif // VIXL_A64_INSTRUCTIONS_A64_H_ diff --git a/qemu/disas/libvixl/vixl/a64/assembler-a64.h b/qemu/disas/libvixl/vixl/a64/assembler-a64.h new file mode 100644 index 000000000..fda5ccc6c --- /dev/null +++ b/qemu/disas/libvixl/vixl/a64/assembler-a64.h @@ -0,0 +1,4624 @@ +// Copyright 2015, ARM Limited +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// +// * Redistributions of source code must retain the above copyright notice, +// this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above copyright notice, +// this list of conditions and the following disclaimer in the documentation +// and/or other materials provided with the distribution. +// * Neither the name of ARM Limited nor the names of its contributors may be +// used to endorse or promote products derived from this software without +// specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND +// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE +// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, +// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +#ifndef VIXL_A64_ASSEMBLER_A64_H_ +#define VIXL_A64_ASSEMBLER_A64_H_ + + +#include "vixl/globals.h" +#include "vixl/invalset.h" +#include "vixl/utils.h" +#include "vixl/code-buffer.h" +#include "vixl/a64/instructions-a64.h" + +namespace vixl { + +typedef uint64_t RegList; +static const int kRegListSizeInBits = sizeof(RegList) * 8; + + +// Registers. + +// Some CPURegister methods can return Register or VRegister types, so we need +// to declare them in advance. +class Register; +class VRegister; + +class CPURegister { + public: + enum RegisterType { + // The kInvalid value is used to detect uninitialized static instances, + // which are always zero-initialized before any constructors are called. + kInvalid = 0, + kRegister, + kVRegister, + kFPRegister = kVRegister, + kNoRegister + }; + + CPURegister() : code_(0), size_(0), type_(kNoRegister) { + VIXL_ASSERT(!IsValid()); + VIXL_ASSERT(IsNone()); + } + + CPURegister(unsigned code, unsigned size, RegisterType type) + : code_(code), size_(size), type_(type) { + VIXL_ASSERT(IsValidOrNone()); + } + + unsigned code() const { + VIXL_ASSERT(IsValid()); + return code_; + } + + RegisterType type() const { + VIXL_ASSERT(IsValidOrNone()); + return type_; + } + + RegList Bit() const { + VIXL_ASSERT(code_ < (sizeof(RegList) * 8)); + return IsValid() ? (static_cast<RegList>(1) << code_) : 0; + } + + unsigned size() const { + VIXL_ASSERT(IsValid()); + return size_; + } + + int SizeInBytes() const { + VIXL_ASSERT(IsValid()); + VIXL_ASSERT(size() % 8 == 0); + return size_ / 8; + } + + int SizeInBits() const { + VIXL_ASSERT(IsValid()); + return size_; + } + + bool Is8Bits() const { + VIXL_ASSERT(IsValid()); + return size_ == 8; + } + + bool Is16Bits() const { + VIXL_ASSERT(IsValid()); + return size_ == 16; + } + + bool Is32Bits() const { + VIXL_ASSERT(IsValid()); + return size_ == 32; + } + + bool Is64Bits() const { + VIXL_ASSERT(IsValid()); + return size_ == 64; + } + + bool Is128Bits() const { + VIXL_ASSERT(IsValid()); + return size_ == 128; + } + + bool IsValid() const { + if (IsValidRegister() || IsValidVRegister()) { + VIXL_ASSERT(!IsNone()); + return true; + } else { + // This assert is hit when the register has not been properly initialized. + // One cause for this can be an initialisation order fiasco. See + // https://isocpp.org/wiki/faq/ctors#static-init-order for some details. + VIXL_ASSERT(IsNone()); + return false; + } + } + + bool IsValidRegister() const { + return IsRegister() && + ((size_ == kWRegSize) || (size_ == kXRegSize)) && + ((code_ < kNumberOfRegisters) || (code_ == kSPRegInternalCode)); + } + + bool IsValidVRegister() const { + return IsVRegister() && + ((size_ == kBRegSize) || (size_ == kHRegSize) || + (size_ == kSRegSize) || (size_ == kDRegSize) || + (size_ == kQRegSize)) && + (code_ < kNumberOfVRegisters); + } + + bool IsValidFPRegister() const { + return IsFPRegister() && (code_ < kNumberOfVRegisters); + } + + bool IsNone() const { + // kNoRegister types should always have size 0 and code 0. + VIXL_ASSERT((type_ != kNoRegister) || (code_ == 0)); + VIXL_ASSERT((type_ != kNoRegister) || (size_ == 0)); + + return type_ == kNoRegister; + } + + bool Aliases(const CPURegister& other) const { + VIXL_ASSERT(IsValidOrNone() && other.IsValidOrNone()); + return (code_ == other.code_) && (type_ == other.type_); + } + + bool Is(const CPURegister& other) const { + VIXL_ASSERT(IsValidOrNone() && other.IsValidOrNone()); + return Aliases(other) && (size_ == other.size_); + } + + bool IsZero() const { + VIXL_ASSERT(IsValid()); + return IsRegister() && (code_ == kZeroRegCode); + } + + bool IsSP() const { + VIXL_ASSERT(IsValid()); + return IsRegister() && (code_ == kSPRegInternalCode); + } + + bool IsRegister() const { + return type_ == kRegister; + } + + bool IsVRegister() const { + return type_ == kVRegister; + } + + bool IsFPRegister() const { + return IsS() || IsD(); + } + + bool IsW() const { return IsValidRegister() && Is32Bits(); } + bool IsX() const { return IsValidRegister() && Is64Bits(); } + + // These assertions ensure that the size and type of the register are as + // described. They do not consider the number of lanes that make up a vector. + // So, for example, Is8B() implies IsD(), and Is1D() implies IsD, but IsD() + // does not imply Is1D() or Is8B(). + // Check the number of lanes, ie. the format of the vector, using methods such + // as Is8B(), Is1D(), etc. in the VRegister class. + bool IsV() const { return IsVRegister(); } + bool IsB() const { return IsV() && Is8Bits(); } + bool IsH() const { return IsV() && Is16Bits(); } + bool IsS() const { return IsV() && Is32Bits(); } + bool IsD() const { return IsV() && Is64Bits(); } + bool IsQ() const { return IsV() && Is128Bits(); } + + const Register& W() const; + const Register& X() const; + const VRegister& V() const; + const VRegister& B() const; + const VRegister& H() const; + const VRegister& S() const; + const VRegister& D() const; + const VRegister& Q() const; + + bool IsSameSizeAndType(const CPURegister& other) const { + return (size_ == other.size_) && (type_ == other.type_); + } + + protected: + unsigned code_; + unsigned size_; + RegisterType type_; + + private: + bool IsValidOrNone() const { + return IsValid() || IsNone(); + } +}; + + +class Register : public CPURegister { + public: + Register() : CPURegister() {} + explicit Register(const CPURegister& other) + : CPURegister(other.code(), other.size(), other.type()) { + VIXL_ASSERT(IsValidRegister()); + } + Register(unsigned code, unsigned size) + : CPURegister(code, size, kRegister) {} + + bool IsValid() const { + VIXL_ASSERT(IsRegister() || IsNone()); + return IsValidRegister(); + } + + static const Register& WRegFromCode(unsigned code); + static const Register& XRegFromCode(unsigned code); + + private: + static const Register wregisters[]; + static const Register xregisters[]; +}; + + +class VRegister : public CPURegister { + public: + VRegister() : CPURegister(), lanes_(1) {} + explicit VRegister(const CPURegister& other) + : CPURegister(other.code(), other.size(), other.type()), lanes_(1) { + VIXL_ASSERT(IsValidVRegister()); + VIXL_ASSERT(IsPowerOf2(lanes_) && (lanes_ <= 16)); + } + VRegister(unsigned code, unsigned size, unsigned lanes = 1) + : CPURegister(code, size, kVRegister), lanes_(lanes) { + VIXL_ASSERT(IsPowerOf2(lanes_) && (lanes_ <= 16)); + } + VRegister(unsigned code, VectorFormat format) + : CPURegister(code, RegisterSizeInBitsFromFormat(format), kVRegister), + lanes_(IsVectorFormat(format) ? LaneCountFromFormat(format) : 1) { + VIXL_ASSERT(IsPowerOf2(lanes_) && (lanes_ <= 16)); + } + + bool IsValid() const { + VIXL_ASSERT(IsVRegister() || IsNone()); + return IsValidVRegister(); + } + + static const VRegister& BRegFromCode(unsigned code); + static const VRegister& HRegFromCode(unsigned code); + static const VRegister& SRegFromCode(unsigned code); + static const VRegister& DRegFromCode(unsigned code); + static const VRegister& QRegFromCode(unsigned code); + static const VRegister& VRegFromCode(unsigned code); + + VRegister V8B() const { return VRegister(code_, kDRegSize, 8); } + VRegister V16B() const { return VRegister(code_, kQRegSize, 16); } + VRegister V4H() const { return VRegister(code_, kDRegSize, 4); } + VRegister V8H() const { return VRegister(code_, kQRegSize, 8); } + VRegister V2S() const { return VRegister(code_, kDRegSize, 2); } + VRegister V4S() const { return VRegister(code_, kQRegSize, 4); } + VRegister V2D() const { return VRegister(code_, kQRegSize, 2); } + VRegister V1D() const { return VRegister(code_, kDRegSize, 1); } + + bool Is8B() const { return (Is64Bits() && (lanes_ == 8)); } + bool Is16B() const { return (Is128Bits() && (lanes_ == 16)); } + bool Is4H() const { return (Is64Bits() && (lanes_ == 4)); } + bool Is8H() const { return (Is128Bits() && (lanes_ == 8)); } + bool Is2S() const { return (Is64Bits() && (lanes_ == 2)); } + bool Is4S() const { return (Is128Bits() && (lanes_ == 4)); } + bool Is1D() const { return (Is64Bits() && (lanes_ == 1)); } + bool Is2D() const { return (Is128Bits() && (lanes_ == 2)); } + + // For consistency, we assert the number of lanes of these scalar registers, + // even though there are no vectors of equivalent total size with which they + // could alias. + bool Is1B() const { + VIXL_ASSERT(!(Is8Bits() && IsVector())); + return Is8Bits(); + } + bool Is1H() const { + VIXL_ASSERT(!(Is16Bits() && IsVector())); + return Is16Bits(); + } + bool Is1S() const { + VIXL_ASSERT(!(Is32Bits() && IsVector())); + return Is32Bits(); + } + + bool IsLaneSizeB() const { return LaneSizeInBits() == kBRegSize; } + bool IsLaneSizeH() const { return LaneSizeInBits() == kHRegSize; } + bool IsLaneSizeS() const { return LaneSizeInBits() == kSRegSize; } + bool IsLaneSizeD() const { return LaneSizeInBits() == kDRegSize; } + + int lanes() const { + return lanes_; + } + + bool IsScalar() const { + return lanes_ == 1; + } + + bool IsVector() const { + return lanes_ > 1; + } + + bool IsSameFormat(const VRegister& other) const { + return (size_ == other.size_) && (lanes_ == other.lanes_); + } + + unsigned LaneSizeInBytes() const { + return SizeInBytes() / lanes_; + } + + unsigned LaneSizeInBits() const { + return LaneSizeInBytes() * 8; + } + + private: + static const VRegister bregisters[]; + static const VRegister hregisters[]; + static const VRegister sregisters[]; + static const VRegister dregisters[]; + static const VRegister qregisters[]; + static const VRegister vregisters[]; + int lanes_; +}; + + +// Backward compatibility for FPRegisters. +typedef VRegister FPRegister; + +// No*Reg is used to indicate an unused argument, or an error case. Note that +// these all compare equal (using the Is() method). The Register and VRegister +// variants are provided for convenience. +const Register NoReg; +const VRegister NoVReg; +const FPRegister NoFPReg; // For backward compatibility. +const CPURegister NoCPUReg; + + +#define DEFINE_REGISTERS(N) \ +const Register w##N(N, kWRegSize); \ +const Register x##N(N, kXRegSize); +REGISTER_CODE_LIST(DEFINE_REGISTERS) +#undef DEFINE_REGISTERS +const Register wsp(kSPRegInternalCode, kWRegSize); +const Register sp(kSPRegInternalCode, kXRegSize); + + +#define DEFINE_VREGISTERS(N) \ +const VRegister b##N(N, kBRegSize); \ +const VRegister h##N(N, kHRegSize); \ +const VRegister s##N(N, kSRegSize); \ +const VRegister d##N(N, kDRegSize); \ +const VRegister q##N(N, kQRegSize); \ +const VRegister v##N(N, kQRegSize); +REGISTER_CODE_LIST(DEFINE_VREGISTERS) +#undef DEFINE_VREGISTERS + + +// Registers aliases. +const Register ip0 = x16; +const Register ip1 = x17; +const Register lr = x30; +const Register xzr = x31; +const Register wzr = w31; + + +// AreAliased returns true if any of the named registers overlap. Arguments +// set to NoReg are ignored. The system stack pointer may be specified. +bool AreAliased(const CPURegister& reg1, + const CPURegister& reg2, + const CPURegister& reg3 = NoReg, + const CPURegister& reg4 = NoReg, + const CPURegister& reg5 = NoReg, + const CPURegister& reg6 = NoReg, + const CPURegister& reg7 = NoReg, + const CPURegister& reg8 = NoReg); + + +// AreSameSizeAndType returns true if all of the specified registers have the +// same size, and are of the same type. The system stack pointer may be +// specified. Arguments set to NoReg are ignored, as are any subsequent +// arguments. At least one argument (reg1) must be valid (not NoCPUReg). +bool AreSameSizeAndType(const CPURegister& reg1, + const CPURegister& reg2, + const CPURegister& reg3 = NoCPUReg, + const CPURegister& reg4 = NoCPUReg, + const CPURegister& reg5 = NoCPUReg, + const CPURegister& reg6 = NoCPUReg, + const CPURegister& reg7 = NoCPUReg, + const CPURegister& reg8 = NoCPUReg); + + +// AreSameFormat returns true if all of the specified VRegisters have the same +// vector format. Arguments set to NoReg are ignored, as are any subsequent +// arguments. At least one argument (reg1) must be valid (not NoVReg). +bool AreSameFormat(const VRegister& reg1, + const VRegister& reg2, + const VRegister& reg3 = NoVReg, + const VRegister& reg4 = NoVReg); + + +// AreConsecutive returns true if all of the specified VRegisters are +// consecutive in the register file. Arguments set to NoReg are ignored, as are +// any subsequent arguments. At least one argument (reg1) must be valid +// (not NoVReg). +bool AreConsecutive(const VRegister& reg1, + const VRegister& reg2, + const VRegister& reg3 = NoVReg, + const VRegister& reg4 = NoVReg); + + +// Lists of registers. +class CPURegList { + public: + explicit CPURegList(CPURegister reg1, + CPURegister reg2 = NoCPUReg, + CPURegister reg3 = NoCPUReg, + CPURegister reg4 = NoCPUReg) + : list_(reg1.Bit() | reg2.Bit() | reg3.Bit() | reg4.Bit()), + size_(reg1.size()), type_(reg1.type()) { + VIXL_ASSERT(AreSameSizeAndType(reg1, reg2, reg3, reg4)); + VIXL_ASSERT(IsValid()); + } + + CPURegList(CPURegister::RegisterType type, unsigned size, RegList list) + : list_(list), size_(size), type_(type) { + VIXL_ASSERT(IsValid()); + } + + CPURegList(CPURegister::RegisterType type, unsigned size, + unsigned first_reg, unsigned last_reg) + : size_(size), type_(type) { + VIXL_ASSERT(((type == CPURegister::kRegister) && + (last_reg < kNumberOfRegisters)) || + ((type == CPURegister::kVRegister) && + (last_reg < kNumberOfVRegisters))); + VIXL_ASSERT(last_reg >= first_reg); + list_ = (UINT64_C(1) << (last_reg + 1)) - 1; + list_ &= ~((UINT64_C(1) << first_reg) - 1); + VIXL_ASSERT(IsValid()); + } + + CPURegister::RegisterType type() const { + VIXL_ASSERT(IsValid()); + return type_; + } + + // Combine another CPURegList into this one. Registers that already exist in + // this list are left unchanged. The type and size of the registers in the + // 'other' list must match those in this list. + void Combine(const CPURegList& other) { + VIXL_ASSERT(IsValid()); + VIXL_ASSERT(other.type() == type_); + VIXL_ASSERT(other.RegisterSizeInBits() == size_); + list_ |= other.list(); + } + + // Remove every register in the other CPURegList from this one. Registers that + // do not exist in this list are ignored. The type and size of the registers + // in the 'other' list must match those in this list. + void Remove(const CPURegList& other) { + VIXL_ASSERT(IsValid()); + VIXL_ASSERT(other.type() == type_); + VIXL_ASSERT(other.RegisterSizeInBits() == size_); + list_ &= ~other.list(); + } + + // Variants of Combine and Remove which take a single register. + void Combine(const CPURegister& other) { + VIXL_ASSERT(other.type() == type_); + VIXL_ASSERT(other.size() == size_); + Combine(other.code()); + } + + void Remove(const CPURegister& other) { + VIXL_ASSERT(other.type() == type_); + VIXL_ASSERT(other.size() == size_); + Remove(other.code()); + } + + // Variants of Combine and Remove which take a single register by its code; + // the type and size of the register is inferred from this list. + void Combine(int code) { + VIXL_ASSERT(IsValid()); + VIXL_ASSERT(CPURegister(code, size_, type_).IsValid()); + list_ |= (UINT64_C(1) << code); + } + + void Remove(int code) { + VIXL_ASSERT(IsValid()); + VIXL_ASSERT(CPURegister(code, size_, type_).IsValid()); + list_ &= ~(UINT64_C(1) << code); + } + + static CPURegList Union(const CPURegList& list_1, const CPURegList& list_2) { + VIXL_ASSERT(list_1.type_ == list_2.type_); + VIXL_ASSERT(list_1.size_ == list_2.size_); + return CPURegList(list_1.type_, list_1.size_, list_1.list_ | list_2.list_); + } + static CPURegList Union(const CPURegList& list_1, + const CPURegList& list_2, + const CPURegList& list_3); + static CPURegList Union(const CPURegList& list_1, + const CPURegList& list_2, + const CPURegList& list_3, + const CPURegList& list_4); + + static CPURegList Intersection(const CPURegList& list_1, + const CPURegList& list_2) { + VIXL_ASSERT(list_1.type_ == list_2.type_); + VIXL_ASSERT(list_1.size_ == list_2.size_); + return CPURegList(list_1.type_, list_1.size_, list_1.list_ & list_2.list_); + } + static CPURegList Intersection(const CPURegList& list_1, + const CPURegList& list_2, + const CPURegList& list_3); + static CPURegList Intersection(const CPURegList& list_1, + const CPURegList& list_2, + const CPURegList& list_3, + const CPURegList& list_4); + + bool Overlaps(const CPURegList& other) const { + return (type_ == other.type_) && ((list_ & other.list_) != 0); + } + + RegList list() const { + VIXL_ASSERT(IsValid()); + return list_; + } + + void set_list(RegList new_list) { + VIXL_ASSERT(IsValid()); + list_ = new_list; + } + + // Remove all callee-saved registers from the list. This can be useful when + // preparing registers for an AAPCS64 function call, for example. + void RemoveCalleeSaved(); + + CPURegister PopLowestIndex(); + CPURegister PopHighestIndex(); + + // AAPCS64 callee-saved registers. + static CPURegList GetCalleeSaved(unsigned size = kXRegSize); + static CPURegList GetCalleeSavedV(unsigned size = kDRegSize); + + // AAPCS64 caller-saved registers. Note that this includes lr. + // TODO(all): Determine how we handle d8-d15 being callee-saved, but the top + // 64-bits being caller-saved. + static CPURegList GetCallerSaved(unsigned size = kXRegSize); + static CPURegList GetCallerSavedV(unsigned size = kDRegSize); + + bool IsEmpty() const { + VIXL_ASSERT(IsValid()); + return list_ == 0; + } + + bool IncludesAliasOf(const CPURegister& other) const { + VIXL_ASSERT(IsValid()); + return (type_ == other.type()) && ((other.Bit() & list_) != 0); + } + + bool IncludesAliasOf(int code) const { + VIXL_ASSERT(IsValid()); + return ((code & list_) != 0); + } + + int Count() const { + VIXL_ASSERT(IsValid()); + return CountSetBits(list_); + } + + unsigned RegisterSizeInBits() const { + VIXL_ASSERT(IsValid()); + return size_; + } + + unsigned RegisterSizeInBytes() const { + int size_in_bits = RegisterSizeInBits(); + VIXL_ASSERT((size_in_bits % 8) == 0); + return size_in_bits / 8; + } + + unsigned TotalSizeInBytes() const { + VIXL_ASSERT(IsValid()); + return RegisterSizeInBytes() * Count(); + } + + private: + RegList list_; + unsigned size_; + CPURegister::RegisterType type_; + + bool IsValid() const; +}; + + +// AAPCS64 callee-saved registers. +extern const CPURegList kCalleeSaved; +extern const CPURegList kCalleeSavedV; + + +// AAPCS64 caller-saved registers. Note that this includes lr. +extern const CPURegList kCallerSaved; +extern const CPURegList kCallerSavedV; + + +// Operand. +class Operand { + public: + // #<immediate> + // where <immediate> is int64_t. + // This is allowed to be an implicit constructor because Operand is + // a wrapper class that doesn't normally perform any type conversion. + Operand(int64_t immediate = 0); // NOLINT(runtime/explicit) + + // rm, {<shift> #<shift_amount>} + // where <shift> is one of {LSL, LSR, ASR, ROR}. + // <shift_amount> is uint6_t. + // This is allowed to be an implicit constructor because Operand is + // a wrapper class that doesn't normally perform any type conversion. + Operand(Register reg, + Shift shift = LSL, + unsigned shift_amount = 0); // NOLINT(runtime/explicit) + + // rm, {<extend> {#<shift_amount>}} + // where <extend> is one of {UXTB, UXTH, UXTW, UXTX, SXTB, SXTH, SXTW, SXTX}. + // <shift_amount> is uint2_t. + explicit Operand(Register reg, Extend extend, unsigned shift_amount = 0); + + bool IsImmediate() const; + bool IsShiftedRegister() const; + bool IsExtendedRegister() const; + bool IsZero() const; + + // This returns an LSL shift (<= 4) operand as an equivalent extend operand, + // which helps in the encoding of instructions that use the stack pointer. + Operand ToExtendedRegister() const; + + int64_t immediate() const { + VIXL_ASSERT(IsImmediate()); + return immediate_; + } + + Register reg() const { + VIXL_ASSERT(IsShiftedRegister() || IsExtendedRegister()); + return reg_; + } + + Shift shift() const { + VIXL_ASSERT(IsShiftedRegister()); + return shift_; + } + + Extend extend() const { + VIXL_ASSERT(IsExtendedRegister()); + return extend_; + } + + unsigned shift_amount() const { + VIXL_ASSERT(IsShiftedRegister() || IsExtendedRegister()); + return shift_amount_; + } + + private: + int64_t immediate_; + Register reg_; + Shift shift_; + Extend extend_; + unsigned shift_amount_; +}; + + +// MemOperand represents the addressing mode of a load or store instruction. +class MemOperand { + public: + explicit MemOperand(Register base, + int64_t offset = 0, + AddrMode addrmode = Offset); + MemOperand(Register base, + Register regoffset, + Shift shift = LSL, + unsigned shift_amount = 0); + MemOperand(Register base, + Register regoffset, + Extend extend, + unsigned shift_amount = 0); + MemOperand(Register base, + const Operand& offset, + AddrMode addrmode = Offset); + + const Register& base() const { return base_; } + const Register& regoffset() const { return regoffset_; } + int64_t offset() const { return offset_; } + AddrMode addrmode() const { return addrmode_; } + Shift shift() const { return shift_; } + Extend extend() const { return extend_; } + unsigned shift_amount() const { return shift_amount_; } + bool IsImmediateOffset() const; + bool IsRegisterOffset() const; + bool IsPreIndex() const; + bool IsPostIndex() const; + + void AddOffset(int64_t offset); + + private: + Register base_; + Register regoffset_; + int64_t offset_; + AddrMode addrmode_; + Shift shift_; + Extend extend_; + unsigned shift_amount_; +}; + + +class LabelTestHelper; // Forward declaration. + + +class Label { + public: + Label() : location_(kLocationUnbound) {} + ~Label() { + // If the label has been linked to, it needs to be bound to a target. + VIXL_ASSERT(!IsLinked() || IsBound()); + } + + bool IsBound() const { return location_ >= 0; } + bool IsLinked() const { return !links_.empty(); } + + ptrdiff_t location() const { return location_; } + + static const int kNPreallocatedLinks = 4; + static const ptrdiff_t kInvalidLinkKey = PTRDIFF_MAX; + static const size_t kReclaimFrom = 512; + static const size_t kReclaimFactor = 2; + + typedef InvalSet<ptrdiff_t, + kNPreallocatedLinks, + ptrdiff_t, + kInvalidLinkKey, + kReclaimFrom, + kReclaimFactor> LinksSetBase; + typedef InvalSetIterator<LinksSetBase> LabelLinksIteratorBase; + + private: + class LinksSet : public LinksSetBase { + public: + LinksSet() : LinksSetBase() {} + }; + + // Allows iterating over the links of a label. The behaviour is undefined if + // the list of links is modified in any way while iterating. + class LabelLinksIterator : public LabelLinksIteratorBase { + public: + explicit LabelLinksIterator(Label* label) + : LabelLinksIteratorBase(&label->links_) {} + }; + + void Bind(ptrdiff_t location) { + // Labels can only be bound once. + VIXL_ASSERT(!IsBound()); + location_ = location; + } + + void AddLink(ptrdiff_t instruction) { + // If a label is bound, the assembler already has the information it needs + // to write the instruction, so there is no need to add it to links_. + VIXL_ASSERT(!IsBound()); + links_.insert(instruction); + } + + void DeleteLink(ptrdiff_t instruction) { + links_.erase(instruction); + } + + void ClearAllLinks() { + links_.clear(); + } + + // TODO: The comment below considers average case complexity for our + // usual use-cases. The elements of interest are: + // - Branches to a label are emitted in order: branch instructions to a label + // are generated at an offset in the code generation buffer greater than any + // other branch to that same label already generated. As an example, this can + // be broken when an instruction is patched to become a branch. Note that the + // code will still work, but the complexity considerations below may locally + // not apply any more. + // - Veneers are generated in order: for multiple branches of the same type + // branching to the same unbound label going out of range, veneers are + // generated in growing order of the branch instruction offset from the start + // of the buffer. + // + // When creating a veneer for a branch going out of range, the link for this + // branch needs to be removed from this `links_`. Since all branches are + // tracked in one underlying InvalSet, the complexity for this deletion is the + // same as for finding the element, ie. O(n), where n is the number of links + // in the set. + // This could be reduced to O(1) by using the same trick as used when tracking + // branch information for veneers: split the container to use one set per type + // of branch. With that setup, when a veneer is created and the link needs to + // be deleted, if the two points above hold, it must be the minimum element of + // the set for its type of branch, and that minimum element will be accessible + // in O(1). + + // The offsets of the instructions that have linked to this label. + LinksSet links_; + // The label location. + ptrdiff_t location_; + + static const ptrdiff_t kLocationUnbound = -1; + + // It is not safe to copy labels, so disable the copy constructor and operator + // by declaring them private (without an implementation). + Label(const Label&); + void operator=(const Label&); + + // The Assembler class is responsible for binding and linking labels, since + // the stored offsets need to be consistent with the Assembler's buffer. + friend class Assembler; + // The MacroAssembler and VeneerPool handle resolution of branches to distant + // targets. + friend class MacroAssembler; + friend class VeneerPool; +}; + + +// Required InvalSet template specialisations. +#define INVAL_SET_TEMPLATE_PARAMETERS \ + ptrdiff_t, \ + Label::kNPreallocatedLinks, \ + ptrdiff_t, \ + Label::kInvalidLinkKey, \ + Label::kReclaimFrom, \ + Label::kReclaimFactor +template<> +inline ptrdiff_t InvalSet<INVAL_SET_TEMPLATE_PARAMETERS>::Key( + const ptrdiff_t& element) { + return element; +} +template<> +inline void InvalSet<INVAL_SET_TEMPLATE_PARAMETERS>::SetKey( + ptrdiff_t* element, ptrdiff_t key) { + *element = key; +} +#undef INVAL_SET_TEMPLATE_PARAMETERS + + +class Assembler; +class LiteralPool; + +// A literal is a 32-bit or 64-bit piece of data stored in the instruction +// stream and loaded through a pc relative load. The same literal can be +// referred to by multiple instructions but a literal can only reside at one +// place in memory. A literal can be used by a load before or after being +// placed in memory. +// +// Internally an offset of 0 is associated with a literal which has been +// neither used nor placed. Then two possibilities arise: +// 1) the label is placed, the offset (stored as offset + 1) is used to +// resolve any subsequent load using the label. +// 2) the label is not placed and offset is the offset of the last load using +// the literal (stored as -offset -1). If multiple loads refer to this +// literal then the last load holds the offset of the preceding load and +// all loads form a chain. Once the offset is placed all the loads in the +// chain are resolved and future loads fall back to possibility 1. +class RawLiteral { + public: + enum DeletionPolicy { + kDeletedOnPlacementByPool, + kDeletedOnPoolDestruction, + kManuallyDeleted + }; + + RawLiteral(size_t size, + LiteralPool* literal_pool, + DeletionPolicy deletion_policy = kManuallyDeleted); + + // The literal pool only sees and deletes `RawLiteral*` pointers, but they are + // actually pointing to `Literal<T>` objects. + virtual ~RawLiteral() {} + + size_t size() { + VIXL_STATIC_ASSERT(kDRegSizeInBytes == kXRegSizeInBytes); + VIXL_STATIC_ASSERT(kSRegSizeInBytes == kWRegSizeInBytes); + VIXL_ASSERT((size_ == kXRegSizeInBytes) || + (size_ == kWRegSizeInBytes) || + (size_ == kQRegSizeInBytes)); + return size_; + } + uint64_t raw_value128_low64() { + VIXL_ASSERT(size_ == kQRegSizeInBytes); + return low64_; + } + uint64_t raw_value128_high64() { + VIXL_ASSERT(size_ == kQRegSizeInBytes); + return high64_; + } + uint64_t raw_value64() { + VIXL_ASSERT(size_ == kXRegSizeInBytes); + VIXL_ASSERT(high64_ == 0); + return low64_; + } + uint32_t raw_value32() { + VIXL_ASSERT(size_ == kWRegSizeInBytes); + VIXL_ASSERT(high64_ == 0); + VIXL_ASSERT(is_uint32(low64_) || is_int32(low64_)); + return static_cast<uint32_t>(low64_); + } + bool IsUsed() { return offset_ < 0; } + bool IsPlaced() { return offset_ > 0; } + + LiteralPool* GetLiteralPool() const { + return literal_pool_; + } + + ptrdiff_t offset() { + VIXL_ASSERT(IsPlaced()); + return offset_ - 1; + } + + protected: + void set_offset(ptrdiff_t offset) { + VIXL_ASSERT(offset >= 0); + VIXL_ASSERT(IsWordAligned(offset)); + VIXL_ASSERT(!IsPlaced()); + offset_ = offset + 1; + } + ptrdiff_t last_use() { + VIXL_ASSERT(IsUsed()); + return -offset_ - 1; + } + void set_last_use(ptrdiff_t offset) { + VIXL_ASSERT(offset >= 0); + VIXL_ASSERT(IsWordAligned(offset)); + VIXL_ASSERT(!IsPlaced()); + offset_ = -offset - 1; + } + + size_t size_; + ptrdiff_t offset_; + uint64_t low64_; + uint64_t high64_; + + private: + LiteralPool* literal_pool_; + DeletionPolicy deletion_policy_; + + friend class Assembler; + friend class LiteralPool; +}; + + +template <typename T> +class Literal : public RawLiteral { + public: + explicit Literal(T value, + LiteralPool* literal_pool = NULL, + RawLiteral::DeletionPolicy ownership = kManuallyDeleted) + : RawLiteral(sizeof(value), literal_pool, ownership) { + VIXL_STATIC_ASSERT(sizeof(value) <= kXRegSizeInBytes); + UpdateValue(value); + } + + Literal(T high64, T low64, + LiteralPool* literal_pool = NULL, + RawLiteral::DeletionPolicy ownership = kManuallyDeleted) + : RawLiteral(kQRegSizeInBytes, literal_pool, ownership) { + VIXL_STATIC_ASSERT(sizeof(low64) == (kQRegSizeInBytes / 2)); + UpdateValue(high64, low64); + } + + virtual ~Literal() {} + + // Update the value of this literal, if necessary by rewriting the value in + // the pool. + // If the literal has already been placed in a literal pool, the address of + // the start of the code buffer must be provided, as the literal only knows it + // offset from there. This also allows patching the value after the code has + // been moved in memory. + void UpdateValue(T new_value, uint8_t* code_buffer = NULL) { + VIXL_ASSERT(sizeof(new_value) == size_); + memcpy(&low64_, &new_value, sizeof(new_value)); + if (IsPlaced()) { + VIXL_ASSERT(code_buffer != NULL); + RewriteValueInCode(code_buffer); + } + } + + void UpdateValue(T high64, T low64, uint8_t* code_buffer = NULL) { + VIXL_ASSERT(sizeof(low64) == size_ / 2); + memcpy(&low64_, &low64, sizeof(low64)); + memcpy(&high64_, &high64, sizeof(high64)); + if (IsPlaced()) { + VIXL_ASSERT(code_buffer != NULL); + RewriteValueInCode(code_buffer); + } + } + + void UpdateValue(T new_value, const Assembler* assembler); + void UpdateValue(T high64, T low64, const Assembler* assembler); + + private: + void RewriteValueInCode(uint8_t* code_buffer) { + VIXL_ASSERT(IsPlaced()); + VIXL_STATIC_ASSERT(sizeof(T) <= kXRegSizeInBytes); + switch (size()) { + case kSRegSizeInBytes: + *reinterpret_cast<uint32_t*>(code_buffer + offset()) = raw_value32(); + break; + case kDRegSizeInBytes: + *reinterpret_cast<uint64_t*>(code_buffer + offset()) = raw_value64(); + break; + default: + VIXL_ASSERT(size() == kQRegSizeInBytes); + uint64_t* base_address = + reinterpret_cast<uint64_t*>(code_buffer + offset()); + *base_address = raw_value128_low64(); + *(base_address + 1) = raw_value128_high64(); + } + } +}; + + +// Control whether or not position-independent code should be emitted. +enum PositionIndependentCodeOption { + // All code generated will be position-independent; all branches and + // references to labels generated with the Label class will use PC-relative + // addressing. + PositionIndependentCode, + + // Allow VIXL to generate code that refers to absolute addresses. With this + // option, it will not be possible to copy the code buffer and run it from a + // different address; code must be generated in its final location. + PositionDependentCode, + + // Allow VIXL to assume that the bottom 12 bits of the address will be + // constant, but that the top 48 bits may change. This allows `adrp` to + // function in systems which copy code between pages, but otherwise maintain + // 4KB page alignment. + PageOffsetDependentCode +}; + + +// Control how scaled- and unscaled-offset loads and stores are generated. +enum LoadStoreScalingOption { + // Prefer scaled-immediate-offset instructions, but emit unscaled-offset, + // register-offset, pre-index or post-index instructions if necessary. + PreferScaledOffset, + + // Prefer unscaled-immediate-offset instructions, but emit scaled-offset, + // register-offset, pre-index or post-index instructions if necessary. + PreferUnscaledOffset, + + // Require scaled-immediate-offset instructions. + RequireScaledOffset, + + // Require unscaled-immediate-offset instructions. + RequireUnscaledOffset +}; + + +// Assembler. +class Assembler { + public: + Assembler(size_t capacity, + PositionIndependentCodeOption pic = PositionIndependentCode); + Assembler(byte* buffer, size_t capacity, + PositionIndependentCodeOption pic = PositionIndependentCode); + + // The destructor asserts that one of the following is true: + // * The Assembler object has not been used. + // * Nothing has been emitted since the last Reset() call. + // * Nothing has been emitted since the last FinalizeCode() call. + ~Assembler(); + + // System functions. + + // Start generating code from the beginning of the buffer, discarding any code + // and data that has already been emitted into the buffer. + void Reset(); + + // Finalize a code buffer of generated instructions. This function must be + // called before executing or copying code from the buffer. + void FinalizeCode(); + + // Label. + // Bind a label to the current PC. + void bind(Label* label); + + // Bind a label to a specified offset from the start of the buffer. + void BindToOffset(Label* label, ptrdiff_t offset); + + // Place a literal at the current PC. + void place(RawLiteral* literal); + + ptrdiff_t CursorOffset() const { + return buffer_->CursorOffset(); + } + + ptrdiff_t BufferEndOffset() const { + return static_cast<ptrdiff_t>(buffer_->capacity()); + } + + // Return the address of an offset in the buffer. + template <typename T> + T GetOffsetAddress(ptrdiff_t offset) const { + VIXL_STATIC_ASSERT(sizeof(T) >= sizeof(uintptr_t)); + return buffer_->GetOffsetAddress<T>(offset); + } + + // Return the address of a bound label. + template <typename T> + T GetLabelAddress(const Label * label) const { + VIXL_ASSERT(label->IsBound()); + VIXL_STATIC_ASSERT(sizeof(T) >= sizeof(uintptr_t)); + return GetOffsetAddress<T>(label->location()); + } + + // Return the address of the cursor. + template <typename T> + T GetCursorAddress() const { + VIXL_STATIC_ASSERT(sizeof(T) >= sizeof(uintptr_t)); + return GetOffsetAddress<T>(CursorOffset()); + } + + // Return the address of the start of the buffer. + template <typename T> + T GetStartAddress() const { + VIXL_STATIC_ASSERT(sizeof(T) >= sizeof(uintptr_t)); + return GetOffsetAddress<T>(0); + } + + Instruction* InstructionAt(ptrdiff_t instruction_offset) { + return GetOffsetAddress<Instruction*>(instruction_offset); + } + + ptrdiff_t InstructionOffset(Instruction* instruction) { + VIXL_STATIC_ASSERT(sizeof(*instruction) == 1); + ptrdiff_t offset = instruction - GetStartAddress<Instruction*>(); + VIXL_ASSERT((0 <= offset) && + (offset < static_cast<ptrdiff_t>(BufferCapacity()))); + return offset; + } + + // Instruction set functions. + + // Branch / Jump instructions. + // Branch to register. + void br(const Register& xn); + + // Branch with link to register. + void blr(const Register& xn); + + // Branch to register with return hint. + void ret(const Register& xn = lr); + + // Unconditional branch to label. + void b(Label* label); + + // Conditional branch to label. + void b(Label* label, Condition cond); + + // Unconditional branch to PC offset. + void b(int imm26); + + // Conditional branch to PC offset. + void b(int imm19, Condition cond); + + // Branch with link to label. + void bl(Label* label); + + // Branch with link to PC offset. + void bl(int imm26); + + // Compare and branch to label if zero. + void cbz(const Register& rt, Label* label); + + // Compare and branch to PC offset if zero. + void cbz(const Register& rt, int imm19); + + // Compare and branch to label if not zero. + void cbnz(const Register& rt, Label* label); + + // Compare and branch to PC offset if not zero. + void cbnz(const Register& rt, int imm19); + + // Table lookup from one register. + void tbl(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Table lookup from two registers. + void tbl(const VRegister& vd, + const VRegister& vn, + const VRegister& vn2, + const VRegister& vm); + + // Table lookup from three registers. + void tbl(const VRegister& vd, + const VRegister& vn, + const VRegister& vn2, + const VRegister& vn3, + const VRegister& vm); + + // Table lookup from four registers. + void tbl(const VRegister& vd, + const VRegister& vn, + const VRegister& vn2, + const VRegister& vn3, + const VRegister& vn4, + const VRegister& vm); + + // Table lookup extension from one register. + void tbx(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Table lookup extension from two registers. + void tbx(const VRegister& vd, + const VRegister& vn, + const VRegister& vn2, + const VRegister& vm); + + // Table lookup extension from three registers. + void tbx(const VRegister& vd, + const VRegister& vn, + const VRegister& vn2, + const VRegister& vn3, + const VRegister& vm); + + // Table lookup extension from four registers. + void tbx(const VRegister& vd, + const VRegister& vn, + const VRegister& vn2, + const VRegister& vn3, + const VRegister& vn4, + const VRegister& vm); + + // Test bit and branch to label if zero. + void tbz(const Register& rt, unsigned bit_pos, Label* label); + + // Test bit and branch to PC offset if zero. + void tbz(const Register& rt, unsigned bit_pos, int imm14); + + // Test bit and branch to label if not zero. + void tbnz(const Register& rt, unsigned bit_pos, Label* label); + + // Test bit and branch to PC offset if not zero. + void tbnz(const Register& rt, unsigned bit_pos, int imm14); + + // Address calculation instructions. + // Calculate a PC-relative address. Unlike for branches the offset in adr is + // unscaled (i.e. the result can be unaligned). + + // Calculate the address of a label. + void adr(const Register& rd, Label* label); + + // Calculate the address of a PC offset. + void adr(const Register& rd, int imm21); + + // Calculate the page address of a label. + void adrp(const Register& rd, Label* label); + + // Calculate the page address of a PC offset. + void adrp(const Register& rd, int imm21); + + // Data Processing instructions. + // Add. + void add(const Register& rd, + const Register& rn, + const Operand& operand); + + // Add and update status flags. + void adds(const Register& rd, + const Register& rn, + const Operand& operand); + + // Compare negative. + void cmn(const Register& rn, const Operand& operand); + + // Subtract. + void sub(const Register& rd, + const Register& rn, + const Operand& operand); + + // Subtract and update status flags. + void subs(const Register& rd, + const Register& rn, + const Operand& operand); + + // Compare. + void cmp(const Register& rn, const Operand& operand); + + // Negate. + void neg(const Register& rd, + const Operand& operand); + + // Negate and update status flags. + void negs(const Register& rd, + const Operand& operand); + + // Add with carry bit. + void adc(const Register& rd, + const Register& rn, + const Operand& operand); + + // Add with carry bit and update status flags. + void adcs(const Register& rd, + const Register& rn, + const Operand& operand); + + // Subtract with carry bit. + void sbc(const Register& rd, + const Register& rn, + const Operand& operand); + + // Subtract with carry bit and update status flags. + void sbcs(const Register& rd, + const Register& rn, + const Operand& operand); + + // Negate with carry bit. + void ngc(const Register& rd, + const Operand& operand); + + // Negate with carry bit and update status flags. + void ngcs(const Register& rd, + const Operand& operand); + + // Logical instructions. + // Bitwise and (A & B). + void and_(const Register& rd, + const Register& rn, + const Operand& operand); + + // Bitwise and (A & B) and update status flags. + void ands(const Register& rd, + const Register& rn, + const Operand& operand); + + // Bit test and set flags. + void tst(const Register& rn, const Operand& operand); + + // Bit clear (A & ~B). + void bic(const Register& rd, + const Register& rn, + const Operand& operand); + + // Bit clear (A & ~B) and update status flags. + void bics(const Register& rd, + const Register& rn, + const Operand& operand); + + // Bitwise or (A | B). + void orr(const Register& rd, const Register& rn, const Operand& operand); + + // Bitwise nor (A | ~B). + void orn(const Register& rd, const Register& rn, const Operand& operand); + + // Bitwise eor/xor (A ^ B). + void eor(const Register& rd, const Register& rn, const Operand& operand); + + // Bitwise enor/xnor (A ^ ~B). + void eon(const Register& rd, const Register& rn, const Operand& operand); + + // Logical shift left by variable. + void lslv(const Register& rd, const Register& rn, const Register& rm); + + // Logical shift right by variable. + void lsrv(const Register& rd, const Register& rn, const Register& rm); + + // Arithmetic shift right by variable. + void asrv(const Register& rd, const Register& rn, const Register& rm); + + // Rotate right by variable. + void rorv(const Register& rd, const Register& rn, const Register& rm); + + // Bitfield instructions. + // Bitfield move. + void bfm(const Register& rd, + const Register& rn, + unsigned immr, + unsigned imms); + + // Signed bitfield move. + void sbfm(const Register& rd, + const Register& rn, + unsigned immr, + unsigned imms); + + // Unsigned bitfield move. + void ubfm(const Register& rd, + const Register& rn, + unsigned immr, + unsigned imms); + + // Bfm aliases. + // Bitfield insert. + void bfi(const Register& rd, + const Register& rn, + unsigned lsb, + unsigned width) { + VIXL_ASSERT(width >= 1); + VIXL_ASSERT(lsb + width <= rn.size()); + bfm(rd, rn, (rd.size() - lsb) & (rd.size() - 1), width - 1); + } + + // Bitfield extract and insert low. + void bfxil(const Register& rd, + const Register& rn, + unsigned lsb, + unsigned width) { + VIXL_ASSERT(width >= 1); + VIXL_ASSERT(lsb + width <= rn.size()); + bfm(rd, rn, lsb, lsb + width - 1); + } + + // Sbfm aliases. + // Arithmetic shift right. + void asr(const Register& rd, const Register& rn, unsigned shift) { + VIXL_ASSERT(shift < rd.size()); + sbfm(rd, rn, shift, rd.size() - 1); + } + + // Signed bitfield insert with zero at right. + void sbfiz(const Register& rd, + const Register& rn, + unsigned lsb, + unsigned width) { + VIXL_ASSERT(width >= 1); + VIXL_ASSERT(lsb + width <= rn.size()); + sbfm(rd, rn, (rd.size() - lsb) & (rd.size() - 1), width - 1); + } + + // Signed bitfield extract. + void sbfx(const Register& rd, + const Register& rn, + unsigned lsb, + unsigned width) { + VIXL_ASSERT(width >= 1); + VIXL_ASSERT(lsb + width <= rn.size()); + sbfm(rd, rn, lsb, lsb + width - 1); + } + + // Signed extend byte. + void sxtb(const Register& rd, const Register& rn) { + sbfm(rd, rn, 0, 7); + } + + // Signed extend halfword. + void sxth(const Register& rd, const Register& rn) { + sbfm(rd, rn, 0, 15); + } + + // Signed extend word. + void sxtw(const Register& rd, const Register& rn) { + sbfm(rd, rn, 0, 31); + } + + // Ubfm aliases. + // Logical shift left. + void lsl(const Register& rd, const Register& rn, unsigned shift) { + unsigned reg_size = rd.size(); + VIXL_ASSERT(shift < reg_size); + ubfm(rd, rn, (reg_size - shift) % reg_size, reg_size - shift - 1); + } + + // Logical shift right. + void lsr(const Register& rd, const Register& rn, unsigned shift) { + VIXL_ASSERT(shift < rd.size()); + ubfm(rd, rn, shift, rd.size() - 1); + } + + // Unsigned bitfield insert with zero at right. + void ubfiz(const Register& rd, + const Register& rn, + unsigned lsb, + unsigned width) { + VIXL_ASSERT(width >= 1); + VIXL_ASSERT(lsb + width <= rn.size()); + ubfm(rd, rn, (rd.size() - lsb) & (rd.size() - 1), width - 1); + } + + // Unsigned bitfield extract. + void ubfx(const Register& rd, + const Register& rn, + unsigned lsb, + unsigned width) { + VIXL_ASSERT(width >= 1); + VIXL_ASSERT(lsb + width <= rn.size()); + ubfm(rd, rn, lsb, lsb + width - 1); + } + + // Unsigned extend byte. + void uxtb(const Register& rd, const Register& rn) { + ubfm(rd, rn, 0, 7); + } + + // Unsigned extend halfword. + void uxth(const Register& rd, const Register& rn) { + ubfm(rd, rn, 0, 15); + } + + // Unsigned extend word. + void uxtw(const Register& rd, const Register& rn) { + ubfm(rd, rn, 0, 31); + } + + // Extract. + void extr(const Register& rd, + const Register& rn, + const Register& rm, + unsigned lsb); + + // Conditional select: rd = cond ? rn : rm. + void csel(const Register& rd, + const Register& rn, + const Register& rm, + Condition cond); + + // Conditional select increment: rd = cond ? rn : rm + 1. + void csinc(const Register& rd, + const Register& rn, + const Register& rm, + Condition cond); + + // Conditional select inversion: rd = cond ? rn : ~rm. + void csinv(const Register& rd, + const Register& rn, + const Register& rm, + Condition cond); + + // Conditional select negation: rd = cond ? rn : -rm. + void csneg(const Register& rd, + const Register& rn, + const Register& rm, + Condition cond); + + // Conditional set: rd = cond ? 1 : 0. + void cset(const Register& rd, Condition cond); + + // Conditional set mask: rd = cond ? -1 : 0. + void csetm(const Register& rd, Condition cond); + + // Conditional increment: rd = cond ? rn + 1 : rn. + void cinc(const Register& rd, const Register& rn, Condition cond); + + // Conditional invert: rd = cond ? ~rn : rn. + void cinv(const Register& rd, const Register& rn, Condition cond); + + // Conditional negate: rd = cond ? -rn : rn. + void cneg(const Register& rd, const Register& rn, Condition cond); + + // Rotate right. + void ror(const Register& rd, const Register& rs, unsigned shift) { + extr(rd, rs, rs, shift); + } + + // Conditional comparison. + // Conditional compare negative. + void ccmn(const Register& rn, + const Operand& operand, + StatusFlags nzcv, + Condition cond); + + // Conditional compare. + void ccmp(const Register& rn, + const Operand& operand, + StatusFlags nzcv, + Condition cond); + + // CRC-32 checksum from byte. + void crc32b(const Register& rd, + const Register& rn, + const Register& rm); + + // CRC-32 checksum from half-word. + void crc32h(const Register& rd, + const Register& rn, + const Register& rm); + + // CRC-32 checksum from word. + void crc32w(const Register& rd, + const Register& rn, + const Register& rm); + + // CRC-32 checksum from double word. + void crc32x(const Register& rd, + const Register& rn, + const Register& rm); + + // CRC-32 C checksum from byte. + void crc32cb(const Register& rd, + const Register& rn, + const Register& rm); + + // CRC-32 C checksum from half-word. + void crc32ch(const Register& rd, + const Register& rn, + const Register& rm); + + // CRC-32 C checksum from word. + void crc32cw(const Register& rd, + const Register& rn, + const Register& rm); + + // CRC-32C checksum from double word. + void crc32cx(const Register& rd, + const Register& rn, + const Register& rm); + + // Multiply. + void mul(const Register& rd, const Register& rn, const Register& rm); + + // Negated multiply. + void mneg(const Register& rd, const Register& rn, const Register& rm); + + // Signed long multiply: 32 x 32 -> 64-bit. + void smull(const Register& rd, const Register& rn, const Register& rm); + + // Signed multiply high: 64 x 64 -> 64-bit <127:64>. + void smulh(const Register& xd, const Register& xn, const Register& xm); + + // Multiply and accumulate. + void madd(const Register& rd, + const Register& rn, + const Register& rm, + const Register& ra); + + // Multiply and subtract. + void msub(const Register& rd, + const Register& rn, + const Register& rm, + const Register& ra); + + // Signed long multiply and accumulate: 32 x 32 + 64 -> 64-bit. + void smaddl(const Register& rd, + const Register& rn, + const Register& rm, + const Register& ra); + + // Unsigned long multiply and accumulate: 32 x 32 + 64 -> 64-bit. + void umaddl(const Register& rd, + const Register& rn, + const Register& rm, + const Register& ra); + + // Unsigned long multiply: 32 x 32 -> 64-bit. + void umull(const Register& rd, + const Register& rn, + const Register& rm) { + umaddl(rd, rn, rm, xzr); + } + + // Unsigned multiply high: 64 x 64 -> 64-bit <127:64>. + void umulh(const Register& xd, + const Register& xn, + const Register& xm); + + // Signed long multiply and subtract: 64 - (32 x 32) -> 64-bit. + void smsubl(const Register& rd, + const Register& rn, + const Register& rm, + const Register& ra); + + // Unsigned long multiply and subtract: 64 - (32 x 32) -> 64-bit. + void umsubl(const Register& rd, + const Register& rn, + const Register& rm, + const Register& ra); + + // Signed integer divide. + void sdiv(const Register& rd, const Register& rn, const Register& rm); + + // Unsigned integer divide. + void udiv(const Register& rd, const Register& rn, const Register& rm); + + // Bit reverse. + void rbit(const Register& rd, const Register& rn); + + // Reverse bytes in 16-bit half words. + void rev16(const Register& rd, const Register& rn); + + // Reverse bytes in 32-bit words. + void rev32(const Register& rd, const Register& rn); + + // Reverse bytes. + void rev(const Register& rd, const Register& rn); + + // Count leading zeroes. + void clz(const Register& rd, const Register& rn); + + // Count leading sign bits. + void cls(const Register& rd, const Register& rn); + + // Memory instructions. + // Load integer or FP register. + void ldr(const CPURegister& rt, const MemOperand& src, + LoadStoreScalingOption option = PreferScaledOffset); + + // Store integer or FP register. + void str(const CPURegister& rt, const MemOperand& dst, + LoadStoreScalingOption option = PreferScaledOffset); + + // Load word with sign extension. + void ldrsw(const Register& rt, const MemOperand& src, + LoadStoreScalingOption option = PreferScaledOffset); + + // Load byte. + void ldrb(const Register& rt, const MemOperand& src, + LoadStoreScalingOption option = PreferScaledOffset); + + // Store byte. + void strb(const Register& rt, const MemOperand& dst, + LoadStoreScalingOption option = PreferScaledOffset); + + // Load byte with sign extension. + void ldrsb(const Register& rt, const MemOperand& src, + LoadStoreScalingOption option = PreferScaledOffset); + + // Load half-word. + void ldrh(const Register& rt, const MemOperand& src, + LoadStoreScalingOption option = PreferScaledOffset); + + // Store half-word. + void strh(const Register& rt, const MemOperand& dst, + LoadStoreScalingOption option = PreferScaledOffset); + + // Load half-word with sign extension. + void ldrsh(const Register& rt, const MemOperand& src, + LoadStoreScalingOption option = PreferScaledOffset); + + // Load integer or FP register (with unscaled offset). + void ldur(const CPURegister& rt, const MemOperand& src, + LoadStoreScalingOption option = PreferUnscaledOffset); + + // Store integer or FP register (with unscaled offset). + void stur(const CPURegister& rt, const MemOperand& src, + LoadStoreScalingOption option = PreferUnscaledOffset); + + // Load word with sign extension. + void ldursw(const Register& rt, const MemOperand& src, + LoadStoreScalingOption option = PreferUnscaledOffset); + + // Load byte (with unscaled offset). + void ldurb(const Register& rt, const MemOperand& src, + LoadStoreScalingOption option = PreferUnscaledOffset); + + // Store byte (with unscaled offset). + void sturb(const Register& rt, const MemOperand& dst, + LoadStoreScalingOption option = PreferUnscaledOffset); + + // Load byte with sign extension (and unscaled offset). + void ldursb(const Register& rt, const MemOperand& src, + LoadStoreScalingOption option = PreferUnscaledOffset); + + // Load half-word (with unscaled offset). + void ldurh(const Register& rt, const MemOperand& src, + LoadStoreScalingOption option = PreferUnscaledOffset); + + // Store half-word (with unscaled offset). + void sturh(const Register& rt, const MemOperand& dst, + LoadStoreScalingOption option = PreferUnscaledOffset); + + // Load half-word with sign extension (and unscaled offset). + void ldursh(const Register& rt, const MemOperand& src, + LoadStoreScalingOption option = PreferUnscaledOffset); + + // Load integer or FP register pair. + void ldp(const CPURegister& rt, const CPURegister& rt2, + const MemOperand& src); + + // Store integer or FP register pair. + void stp(const CPURegister& rt, const CPURegister& rt2, + const MemOperand& dst); + + // Load word pair with sign extension. + void ldpsw(const Register& rt, const Register& rt2, const MemOperand& src); + + // Load integer or FP register pair, non-temporal. + void ldnp(const CPURegister& rt, const CPURegister& rt2, + const MemOperand& src); + + // Store integer or FP register pair, non-temporal. + void stnp(const CPURegister& rt, const CPURegister& rt2, + const MemOperand& dst); + + // Load integer or FP register from literal pool. + void ldr(const CPURegister& rt, RawLiteral* literal); + + // Load word with sign extension from literal pool. + void ldrsw(const Register& rt, RawLiteral* literal); + + // Load integer or FP register from pc + imm19 << 2. + void ldr(const CPURegister& rt, int imm19); + + // Load word with sign extension from pc + imm19 << 2. + void ldrsw(const Register& rt, int imm19); + + // Store exclusive byte. + void stxrb(const Register& rs, const Register& rt, const MemOperand& dst); + + // Store exclusive half-word. + void stxrh(const Register& rs, const Register& rt, const MemOperand& dst); + + // Store exclusive register. + void stxr(const Register& rs, const Register& rt, const MemOperand& dst); + + // Load exclusive byte. + void ldxrb(const Register& rt, const MemOperand& src); + + // Load exclusive half-word. + void ldxrh(const Register& rt, const MemOperand& src); + + // Load exclusive register. + void ldxr(const Register& rt, const MemOperand& src); + + // Store exclusive register pair. + void stxp(const Register& rs, + const Register& rt, + const Register& rt2, + const MemOperand& dst); + + // Load exclusive register pair. + void ldxp(const Register& rt, const Register& rt2, const MemOperand& src); + + // Store-release exclusive byte. + void stlxrb(const Register& rs, const Register& rt, const MemOperand& dst); + + // Store-release exclusive half-word. + void stlxrh(const Register& rs, const Register& rt, const MemOperand& dst); + + // Store-release exclusive register. + void stlxr(const Register& rs, const Register& rt, const MemOperand& dst); + + // Load-acquire exclusive byte. + void ldaxrb(const Register& rt, const MemOperand& src); + + // Load-acquire exclusive half-word. + void ldaxrh(const Register& rt, const MemOperand& src); + + // Load-acquire exclusive register. + void ldaxr(const Register& rt, const MemOperand& src); + + // Store-release exclusive register pair. + void stlxp(const Register& rs, + const Register& rt, + const Register& rt2, + const MemOperand& dst); + + // Load-acquire exclusive register pair. + void ldaxp(const Register& rt, const Register& rt2, const MemOperand& src); + + // Store-release byte. + void stlrb(const Register& rt, const MemOperand& dst); + + // Store-release half-word. + void stlrh(const Register& rt, const MemOperand& dst); + + // Store-release register. + void stlr(const Register& rt, const MemOperand& dst); + + // Load-acquire byte. + void ldarb(const Register& rt, const MemOperand& src); + + // Load-acquire half-word. + void ldarh(const Register& rt, const MemOperand& src); + + // Load-acquire register. + void ldar(const Register& rt, const MemOperand& src); + + // Prefetch memory. + void prfm(PrefetchOperation op, const MemOperand& addr, + LoadStoreScalingOption option = PreferScaledOffset); + + // Prefetch memory (with unscaled offset). + void prfum(PrefetchOperation op, const MemOperand& addr, + LoadStoreScalingOption option = PreferUnscaledOffset); + + // Prefetch memory in the literal pool. + void prfm(PrefetchOperation op, RawLiteral* literal); + + // Prefetch from pc + imm19 << 2. + void prfm(PrefetchOperation op, int imm19); + + // Move instructions. The default shift of -1 indicates that the move + // instruction will calculate an appropriate 16-bit immediate and left shift + // that is equal to the 64-bit immediate argument. If an explicit left shift + // is specified (0, 16, 32 or 48), the immediate must be a 16-bit value. + // + // For movk, an explicit shift can be used to indicate which half word should + // be overwritten, eg. movk(x0, 0, 0) will overwrite the least-significant + // half word with zero, whereas movk(x0, 0, 48) will overwrite the + // most-significant. + + // Move immediate and keep. + void movk(const Register& rd, uint64_t imm, int shift = -1) { + MoveWide(rd, imm, shift, MOVK); + } + + // Move inverted immediate. + void movn(const Register& rd, uint64_t imm, int shift = -1) { + MoveWide(rd, imm, shift, MOVN); + } + + // Move immediate. + void movz(const Register& rd, uint64_t imm, int shift = -1) { + MoveWide(rd, imm, shift, MOVZ); + } + + // Misc instructions. + // Monitor debug-mode breakpoint. + void brk(int code); + + // Halting debug-mode breakpoint. + void hlt(int code); + + // Generate exception targeting EL1. + void svc(int code); + + // Move register to register. + void mov(const Register& rd, const Register& rn); + + // Move inverted operand to register. + void mvn(const Register& rd, const Operand& operand); + + // System instructions. + // Move to register from system register. + void mrs(const Register& rt, SystemRegister sysreg); + + // Move from register to system register. + void msr(SystemRegister sysreg, const Register& rt); + + // System instruction. + void sys(int op1, int crn, int crm, int op2, const Register& rt = xzr); + + // System instruction with pre-encoded op (op1:crn:crm:op2). + void sys(int op, const Register& rt = xzr); + + // System data cache operation. + void dc(DataCacheOp op, const Register& rt); + + // System instruction cache operation. + void ic(InstructionCacheOp op, const Register& rt); + + // System hint. + void hint(SystemHint code); + + // Clear exclusive monitor. + void clrex(int imm4 = 0xf); + + // Data memory barrier. + void dmb(BarrierDomain domain, BarrierType type); + + // Data synchronization barrier. + void dsb(BarrierDomain domain, BarrierType type); + + // Instruction synchronization barrier. + void isb(); + + // Alias for system instructions. + // No-op. + void nop() { + hint(NOP); + } + + // FP and NEON instructions. + // Move double precision immediate to FP register. + void fmov(const VRegister& vd, double imm); + + // Move single precision immediate to FP register. + void fmov(const VRegister& vd, float imm); + + // Move FP register to register. + void fmov(const Register& rd, const VRegister& fn); + + // Move register to FP register. + void fmov(const VRegister& vd, const Register& rn); + + // Move FP register to FP register. + void fmov(const VRegister& vd, const VRegister& fn); + + // Move 64-bit register to top half of 128-bit FP register. + void fmov(const VRegister& vd, int index, const Register& rn); + + // Move top half of 128-bit FP register to 64-bit register. + void fmov(const Register& rd, const VRegister& vn, int index); + + // FP add. + void fadd(const VRegister& vd, const VRegister& vn, const VRegister& vm); + + // FP subtract. + void fsub(const VRegister& vd, const VRegister& vn, const VRegister& vm); + + // FP multiply. + void fmul(const VRegister& vd, const VRegister& vn, const VRegister& vm); + + // FP fused multiply-add. + void fmadd(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + const VRegister& va); + + // FP fused multiply-subtract. + void fmsub(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + const VRegister& va); + + // FP fused multiply-add and negate. + void fnmadd(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + const VRegister& va); + + // FP fused multiply-subtract and negate. + void fnmsub(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + const VRegister& va); + + // FP multiply-negate scalar. + void fnmul(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // FP reciprocal exponent scalar. + void frecpx(const VRegister& vd, + const VRegister& vn); + + // FP divide. + void fdiv(const VRegister& vd, const VRegister& fn, const VRegister& vm); + + // FP maximum. + void fmax(const VRegister& vd, const VRegister& fn, const VRegister& vm); + + // FP minimum. + void fmin(const VRegister& vd, const VRegister& fn, const VRegister& vm); + + // FP maximum number. + void fmaxnm(const VRegister& vd, const VRegister& fn, const VRegister& vm); + + // FP minimum number. + void fminnm(const VRegister& vd, const VRegister& fn, const VRegister& vm); + + // FP absolute. + void fabs(const VRegister& vd, const VRegister& vn); + + // FP negate. + void fneg(const VRegister& vd, const VRegister& vn); + + // FP square root. + void fsqrt(const VRegister& vd, const VRegister& vn); + + // FP round to integer, nearest with ties to away. + void frinta(const VRegister& vd, const VRegister& vn); + + // FP round to integer, implicit rounding. + void frinti(const VRegister& vd, const VRegister& vn); + + // FP round to integer, toward minus infinity. + void frintm(const VRegister& vd, const VRegister& vn); + + // FP round to integer, nearest with ties to even. + void frintn(const VRegister& vd, const VRegister& vn); + + // FP round to integer, toward plus infinity. + void frintp(const VRegister& vd, const VRegister& vn); + + // FP round to integer, exact, implicit rounding. + void frintx(const VRegister& vd, const VRegister& vn); + + // FP round to integer, towards zero. + void frintz(const VRegister& vd, const VRegister& vn); + + void FPCompareMacro(const VRegister& vn, + double value, + FPTrapFlags trap); + + void FPCompareMacro(const VRegister& vn, + const VRegister& vm, + FPTrapFlags trap); + + // FP compare registers. + void fcmp(const VRegister& vn, const VRegister& vm); + + // FP compare immediate. + void fcmp(const VRegister& vn, double value); + + void FPCCompareMacro(const VRegister& vn, + const VRegister& vm, + StatusFlags nzcv, + Condition cond, + FPTrapFlags trap); + + // FP conditional compare. + void fccmp(const VRegister& vn, + const VRegister& vm, + StatusFlags nzcv, + Condition cond); + + // FP signaling compare registers. + void fcmpe(const VRegister& vn, const VRegister& vm); + + // FP signaling compare immediate. + void fcmpe(const VRegister& vn, double value); + + // FP conditional signaling compare. + void fccmpe(const VRegister& vn, + const VRegister& vm, + StatusFlags nzcv, + Condition cond); + + // FP conditional select. + void fcsel(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + Condition cond); + + // Common FP Convert functions. + void NEONFPConvertToInt(const Register& rd, + const VRegister& vn, + Instr op); + void NEONFPConvertToInt(const VRegister& vd, + const VRegister& vn, + Instr op); + + // FP convert between precisions. + void fcvt(const VRegister& vd, const VRegister& vn); + + // FP convert to higher precision. + void fcvtl(const VRegister& vd, const VRegister& vn); + + // FP convert to higher precision (second part). + void fcvtl2(const VRegister& vd, const VRegister& vn); + + // FP convert to lower precision. + void fcvtn(const VRegister& vd, const VRegister& vn); + + // FP convert to lower prevision (second part). + void fcvtn2(const VRegister& vd, const VRegister& vn); + + // FP convert to lower precision, rounding to odd. + void fcvtxn(const VRegister& vd, const VRegister& vn); + + // FP convert to lower precision, rounding to odd (second part). + void fcvtxn2(const VRegister& vd, const VRegister& vn); + + // FP convert to signed integer, nearest with ties to away. + void fcvtas(const Register& rd, const VRegister& vn); + + // FP convert to unsigned integer, nearest with ties to away. + void fcvtau(const Register& rd, const VRegister& vn); + + // FP convert to signed integer, nearest with ties to away. + void fcvtas(const VRegister& vd, const VRegister& vn); + + // FP convert to unsigned integer, nearest with ties to away. + void fcvtau(const VRegister& vd, const VRegister& vn); + + // FP convert to signed integer, round towards -infinity. + void fcvtms(const Register& rd, const VRegister& vn); + + // FP convert to unsigned integer, round towards -infinity. + void fcvtmu(const Register& rd, const VRegister& vn); + + // FP convert to signed integer, round towards -infinity. + void fcvtms(const VRegister& vd, const VRegister& vn); + + // FP convert to unsigned integer, round towards -infinity. + void fcvtmu(const VRegister& vd, const VRegister& vn); + + // FP convert to signed integer, nearest with ties to even. + void fcvtns(const Register& rd, const VRegister& vn); + + // FP convert to unsigned integer, nearest with ties to even. + void fcvtnu(const Register& rd, const VRegister& vn); + + // FP convert to signed integer, nearest with ties to even. + void fcvtns(const VRegister& rd, const VRegister& vn); + + // FP convert to unsigned integer, nearest with ties to even. + void fcvtnu(const VRegister& rd, const VRegister& vn); + + // FP convert to signed integer or fixed-point, round towards zero. + void fcvtzs(const Register& rd, const VRegister& vn, int fbits = 0); + + // FP convert to unsigned integer or fixed-point, round towards zero. + void fcvtzu(const Register& rd, const VRegister& vn, int fbits = 0); + + // FP convert to signed integer or fixed-point, round towards zero. + void fcvtzs(const VRegister& vd, const VRegister& vn, int fbits = 0); + + // FP convert to unsigned integer or fixed-point, round towards zero. + void fcvtzu(const VRegister& vd, const VRegister& vn, int fbits = 0); + + // FP convert to signed integer, round towards +infinity. + void fcvtps(const Register& rd, const VRegister& vn); + + // FP convert to unsigned integer, round towards +infinity. + void fcvtpu(const Register& rd, const VRegister& vn); + + // FP convert to signed integer, round towards +infinity. + void fcvtps(const VRegister& vd, const VRegister& vn); + + // FP convert to unsigned integer, round towards +infinity. + void fcvtpu(const VRegister& vd, const VRegister& vn); + + // Convert signed integer or fixed point to FP. + void scvtf(const VRegister& fd, const Register& rn, int fbits = 0); + + // Convert unsigned integer or fixed point to FP. + void ucvtf(const VRegister& fd, const Register& rn, int fbits = 0); + + // Convert signed integer or fixed-point to FP. + void scvtf(const VRegister& fd, const VRegister& vn, int fbits = 0); + + // Convert unsigned integer or fixed-point to FP. + void ucvtf(const VRegister& fd, const VRegister& vn, int fbits = 0); + + // Unsigned absolute difference. + void uabd(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed absolute difference. + void sabd(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned absolute difference and accumulate. + void uaba(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed absolute difference and accumulate. + void saba(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Add. + void add(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Subtract. + void sub(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned halving add. + void uhadd(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed halving add. + void shadd(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned rounding halving add. + void urhadd(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed rounding halving add. + void srhadd(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned halving sub. + void uhsub(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed halving sub. + void shsub(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned saturating add. + void uqadd(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed saturating add. + void sqadd(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned saturating subtract. + void uqsub(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed saturating subtract. + void sqsub(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Add pairwise. + void addp(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Add pair of elements scalar. + void addp(const VRegister& vd, + const VRegister& vn); + + // Multiply-add to accumulator. + void mla(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Multiply-subtract to accumulator. + void mls(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Multiply. + void mul(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Multiply by scalar element. + void mul(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // Multiply-add by scalar element. + void mla(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // Multiply-subtract by scalar element. + void mls(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // Signed long multiply-add by scalar element. + void smlal(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // Signed long multiply-add by scalar element (second part). + void smlal2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // Unsigned long multiply-add by scalar element. + void umlal(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // Unsigned long multiply-add by scalar element (second part). + void umlal2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // Signed long multiply-sub by scalar element. + void smlsl(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // Signed long multiply-sub by scalar element (second part). + void smlsl2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // Unsigned long multiply-sub by scalar element. + void umlsl(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // Unsigned long multiply-sub by scalar element (second part). + void umlsl2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // Signed long multiply by scalar element. + void smull(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // Signed long multiply by scalar element (second part). + void smull2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // Unsigned long multiply by scalar element. + void umull(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // Unsigned long multiply by scalar element (second part). + void umull2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // Signed saturating double long multiply by element. + void sqdmull(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // Signed saturating double long multiply by element (second part). + void sqdmull2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // Signed saturating doubling long multiply-add by element. + void sqdmlal(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // Signed saturating doubling long multiply-add by element (second part). + void sqdmlal2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // Signed saturating doubling long multiply-sub by element. + void sqdmlsl(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // Signed saturating doubling long multiply-sub by element (second part). + void sqdmlsl2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // Compare equal. + void cmeq(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Compare signed greater than or equal. + void cmge(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Compare signed greater than. + void cmgt(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Compare unsigned higher. + void cmhi(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Compare unsigned higher or same. + void cmhs(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Compare bitwise test bits nonzero. + void cmtst(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Compare bitwise to zero. + void cmeq(const VRegister& vd, + const VRegister& vn, + int value); + + // Compare signed greater than or equal to zero. + void cmge(const VRegister& vd, + const VRegister& vn, + int value); + + // Compare signed greater than zero. + void cmgt(const VRegister& vd, + const VRegister& vn, + int value); + + // Compare signed less than or equal to zero. + void cmle(const VRegister& vd, + const VRegister& vn, + int value); + + // Compare signed less than zero. + void cmlt(const VRegister& vd, + const VRegister& vn, + int value); + + // Signed shift left by register. + void sshl(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned shift left by register. + void ushl(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed saturating shift left by register. + void sqshl(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned saturating shift left by register. + void uqshl(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed rounding shift left by register. + void srshl(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned rounding shift left by register. + void urshl(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed saturating rounding shift left by register. + void sqrshl(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned saturating rounding shift left by register. + void uqrshl(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Bitwise and. + void and_(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Bitwise or. + void orr(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Bitwise or immediate. + void orr(const VRegister& vd, + const int imm8, + const int left_shift = 0); + + // Move register to register. + void mov(const VRegister& vd, + const VRegister& vn); + + // Bitwise orn. + void orn(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Bitwise eor. + void eor(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Bit clear immediate. + void bic(const VRegister& vd, + const int imm8, + const int left_shift = 0); + + // Bit clear. + void bic(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Bitwise insert if false. + void bif(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Bitwise insert if true. + void bit(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Bitwise select. + void bsl(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Polynomial multiply. + void pmul(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Vector move immediate. + void movi(const VRegister& vd, + const uint64_t imm, + Shift shift = LSL, + const int shift_amount = 0); + + // Bitwise not. + void mvn(const VRegister& vd, + const VRegister& vn); + + // Vector move inverted immediate. + void mvni(const VRegister& vd, + const int imm8, + Shift shift = LSL, + const int shift_amount = 0); + + // Signed saturating accumulate of unsigned value. + void suqadd(const VRegister& vd, + const VRegister& vn); + + // Unsigned saturating accumulate of signed value. + void usqadd(const VRegister& vd, + const VRegister& vn); + + // Absolute value. + void abs(const VRegister& vd, + const VRegister& vn); + + // Signed saturating absolute value. + void sqabs(const VRegister& vd, + const VRegister& vn); + + // Negate. + void neg(const VRegister& vd, + const VRegister& vn); + + // Signed saturating negate. + void sqneg(const VRegister& vd, + const VRegister& vn); + + // Bitwise not. + void not_(const VRegister& vd, + const VRegister& vn); + + // Extract narrow. + void xtn(const VRegister& vd, + const VRegister& vn); + + // Extract narrow (second part). + void xtn2(const VRegister& vd, + const VRegister& vn); + + // Signed saturating extract narrow. + void sqxtn(const VRegister& vd, + const VRegister& vn); + + // Signed saturating extract narrow (second part). + void sqxtn2(const VRegister& vd, + const VRegister& vn); + + // Unsigned saturating extract narrow. + void uqxtn(const VRegister& vd, + const VRegister& vn); + + // Unsigned saturating extract narrow (second part). + void uqxtn2(const VRegister& vd, + const VRegister& vn); + + // Signed saturating extract unsigned narrow. + void sqxtun(const VRegister& vd, + const VRegister& vn); + + // Signed saturating extract unsigned narrow (second part). + void sqxtun2(const VRegister& vd, + const VRegister& vn); + + // Extract vector from pair of vectors. + void ext(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int index); + + // Duplicate vector element to vector or scalar. + void dup(const VRegister& vd, + const VRegister& vn, + int vn_index); + + // Move vector element to scalar. + void mov(const VRegister& vd, + const VRegister& vn, + int vn_index); + + // Duplicate general-purpose register to vector. + void dup(const VRegister& vd, + const Register& rn); + + // Insert vector element from another vector element. + void ins(const VRegister& vd, + int vd_index, + const VRegister& vn, + int vn_index); + + // Move vector element to another vector element. + void mov(const VRegister& vd, + int vd_index, + const VRegister& vn, + int vn_index); + + // Insert vector element from general-purpose register. + void ins(const VRegister& vd, + int vd_index, + const Register& rn); + + // Move general-purpose register to a vector element. + void mov(const VRegister& vd, + int vd_index, + const Register& rn); + + // Unsigned move vector element to general-purpose register. + void umov(const Register& rd, + const VRegister& vn, + int vn_index); + + // Move vector element to general-purpose register. + void mov(const Register& rd, + const VRegister& vn, + int vn_index); + + // Signed move vector element to general-purpose register. + void smov(const Register& rd, + const VRegister& vn, + int vn_index); + + // One-element structure load to one register. + void ld1(const VRegister& vt, + const MemOperand& src); + + // One-element structure load to two registers. + void ld1(const VRegister& vt, + const VRegister& vt2, + const MemOperand& src); + + // One-element structure load to three registers. + void ld1(const VRegister& vt, + const VRegister& vt2, + const VRegister& vt3, + const MemOperand& src); + + // One-element structure load to four registers. + void ld1(const VRegister& vt, + const VRegister& vt2, + const VRegister& vt3, + const VRegister& vt4, + const MemOperand& src); + + // One-element single structure load to one lane. + void ld1(const VRegister& vt, + int lane, + const MemOperand& src); + + // One-element single structure load to all lanes. + void ld1r(const VRegister& vt, + const MemOperand& src); + + // Two-element structure load. + void ld2(const VRegister& vt, + const VRegister& vt2, + const MemOperand& src); + + // Two-element single structure load to one lane. + void ld2(const VRegister& vt, + const VRegister& vt2, + int lane, + const MemOperand& src); + + // Two-element single structure load to all lanes. + void ld2r(const VRegister& vt, + const VRegister& vt2, + const MemOperand& src); + + // Three-element structure load. + void ld3(const VRegister& vt, + const VRegister& vt2, + const VRegister& vt3, + const MemOperand& src); + + // Three-element single structure load to one lane. + void ld3(const VRegister& vt, + const VRegister& vt2, + const VRegister& vt3, + int lane, + const MemOperand& src); + + // Three-element single structure load to all lanes. + void ld3r(const VRegister& vt, + const VRegister& vt2, + const VRegister& vt3, + const MemOperand& src); + + // Four-element structure load. + void ld4(const VRegister& vt, + const VRegister& vt2, + const VRegister& vt3, + const VRegister& vt4, + const MemOperand& src); + + // Four-element single structure load to one lane. + void ld4(const VRegister& vt, + const VRegister& vt2, + const VRegister& vt3, + const VRegister& vt4, + int lane, + const MemOperand& src); + + // Four-element single structure load to all lanes. + void ld4r(const VRegister& vt, + const VRegister& vt2, + const VRegister& vt3, + const VRegister& vt4, + const MemOperand& src); + + // Count leading sign bits. + void cls(const VRegister& vd, + const VRegister& vn); + + // Count leading zero bits (vector). + void clz(const VRegister& vd, + const VRegister& vn); + + // Population count per byte. + void cnt(const VRegister& vd, + const VRegister& vn); + + // Reverse bit order. + void rbit(const VRegister& vd, + const VRegister& vn); + + // Reverse elements in 16-bit halfwords. + void rev16(const VRegister& vd, + const VRegister& vn); + + // Reverse elements in 32-bit words. + void rev32(const VRegister& vd, + const VRegister& vn); + + // Reverse elements in 64-bit doublewords. + void rev64(const VRegister& vd, + const VRegister& vn); + + // Unsigned reciprocal square root estimate. + void ursqrte(const VRegister& vd, + const VRegister& vn); + + // Unsigned reciprocal estimate. + void urecpe(const VRegister& vd, + const VRegister& vn); + + // Signed pairwise long add. + void saddlp(const VRegister& vd, + const VRegister& vn); + + // Unsigned pairwise long add. + void uaddlp(const VRegister& vd, + const VRegister& vn); + + // Signed pairwise long add and accumulate. + void sadalp(const VRegister& vd, + const VRegister& vn); + + // Unsigned pairwise long add and accumulate. + void uadalp(const VRegister& vd, + const VRegister& vn); + + // Shift left by immediate. + void shl(const VRegister& vd, + const VRegister& vn, + int shift); + + // Signed saturating shift left by immediate. + void sqshl(const VRegister& vd, + const VRegister& vn, + int shift); + + // Signed saturating shift left unsigned by immediate. + void sqshlu(const VRegister& vd, + const VRegister& vn, + int shift); + + // Unsigned saturating shift left by immediate. + void uqshl(const VRegister& vd, + const VRegister& vn, + int shift); + + // Signed shift left long by immediate. + void sshll(const VRegister& vd, + const VRegister& vn, + int shift); + + // Signed shift left long by immediate (second part). + void sshll2(const VRegister& vd, + const VRegister& vn, + int shift); + + // Signed extend long. + void sxtl(const VRegister& vd, + const VRegister& vn); + + // Signed extend long (second part). + void sxtl2(const VRegister& vd, + const VRegister& vn); + + // Unsigned shift left long by immediate. + void ushll(const VRegister& vd, + const VRegister& vn, + int shift); + + // Unsigned shift left long by immediate (second part). + void ushll2(const VRegister& vd, + const VRegister& vn, + int shift); + + // Shift left long by element size. + void shll(const VRegister& vd, + const VRegister& vn, + int shift); + + // Shift left long by element size (second part). + void shll2(const VRegister& vd, + const VRegister& vn, + int shift); + + // Unsigned extend long. + void uxtl(const VRegister& vd, + const VRegister& vn); + + // Unsigned extend long (second part). + void uxtl2(const VRegister& vd, + const VRegister& vn); + + // Shift left by immediate and insert. + void sli(const VRegister& vd, + const VRegister& vn, + int shift); + + // Shift right by immediate and insert. + void sri(const VRegister& vd, + const VRegister& vn, + int shift); + + // Signed maximum. + void smax(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed pairwise maximum. + void smaxp(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Add across vector. + void addv(const VRegister& vd, + const VRegister& vn); + + // Signed add long across vector. + void saddlv(const VRegister& vd, + const VRegister& vn); + + // Unsigned add long across vector. + void uaddlv(const VRegister& vd, + const VRegister& vn); + + // FP maximum number across vector. + void fmaxnmv(const VRegister& vd, + const VRegister& vn); + + // FP maximum across vector. + void fmaxv(const VRegister& vd, + const VRegister& vn); + + // FP minimum number across vector. + void fminnmv(const VRegister& vd, + const VRegister& vn); + + // FP minimum across vector. + void fminv(const VRegister& vd, + const VRegister& vn); + + // Signed maximum across vector. + void smaxv(const VRegister& vd, + const VRegister& vn); + + // Signed minimum. + void smin(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed minimum pairwise. + void sminp(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed minimum across vector. + void sminv(const VRegister& vd, + const VRegister& vn); + + // One-element structure store from one register. + void st1(const VRegister& vt, + const MemOperand& src); + + // One-element structure store from two registers. + void st1(const VRegister& vt, + const VRegister& vt2, + const MemOperand& src); + + // One-element structure store from three registers. + void st1(const VRegister& vt, + const VRegister& vt2, + const VRegister& vt3, + const MemOperand& src); + + // One-element structure store from four registers. + void st1(const VRegister& vt, + const VRegister& vt2, + const VRegister& vt3, + const VRegister& vt4, + const MemOperand& src); + + // One-element single structure store from one lane. + void st1(const VRegister& vt, + int lane, + const MemOperand& src); + + // Two-element structure store from two registers. + void st2(const VRegister& vt, + const VRegister& vt2, + const MemOperand& src); + + // Two-element single structure store from two lanes. + void st2(const VRegister& vt, + const VRegister& vt2, + int lane, + const MemOperand& src); + + // Three-element structure store from three registers. + void st3(const VRegister& vt, + const VRegister& vt2, + const VRegister& vt3, + const MemOperand& src); + + // Three-element single structure store from three lanes. + void st3(const VRegister& vt, + const VRegister& vt2, + const VRegister& vt3, + int lane, + const MemOperand& src); + + // Four-element structure store from four registers. + void st4(const VRegister& vt, + const VRegister& vt2, + const VRegister& vt3, + const VRegister& vt4, + const MemOperand& src); + + // Four-element single structure store from four lanes. + void st4(const VRegister& vt, + const VRegister& vt2, + const VRegister& vt3, + const VRegister& vt4, + int lane, + const MemOperand& src); + + // Unsigned add long. + void uaddl(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned add long (second part). + void uaddl2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned add wide. + void uaddw(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned add wide (second part). + void uaddw2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed add long. + void saddl(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed add long (second part). + void saddl2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed add wide. + void saddw(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed add wide (second part). + void saddw2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned subtract long. + void usubl(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned subtract long (second part). + void usubl2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned subtract wide. + void usubw(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned subtract wide (second part). + void usubw2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed subtract long. + void ssubl(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed subtract long (second part). + void ssubl2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed integer subtract wide. + void ssubw(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed integer subtract wide (second part). + void ssubw2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned maximum. + void umax(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned pairwise maximum. + void umaxp(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned maximum across vector. + void umaxv(const VRegister& vd, + const VRegister& vn); + + // Unsigned minimum. + void umin(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned pairwise minimum. + void uminp(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned minimum across vector. + void uminv(const VRegister& vd, + const VRegister& vn); + + // Transpose vectors (primary). + void trn1(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Transpose vectors (secondary). + void trn2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unzip vectors (primary). + void uzp1(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unzip vectors (secondary). + void uzp2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Zip vectors (primary). + void zip1(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Zip vectors (secondary). + void zip2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed shift right by immediate. + void sshr(const VRegister& vd, + const VRegister& vn, + int shift); + + // Unsigned shift right by immediate. + void ushr(const VRegister& vd, + const VRegister& vn, + int shift); + + // Signed rounding shift right by immediate. + void srshr(const VRegister& vd, + const VRegister& vn, + int shift); + + // Unsigned rounding shift right by immediate. + void urshr(const VRegister& vd, + const VRegister& vn, + int shift); + + // Signed shift right by immediate and accumulate. + void ssra(const VRegister& vd, + const VRegister& vn, + int shift); + + // Unsigned shift right by immediate and accumulate. + void usra(const VRegister& vd, + const VRegister& vn, + int shift); + + // Signed rounding shift right by immediate and accumulate. + void srsra(const VRegister& vd, + const VRegister& vn, + int shift); + + // Unsigned rounding shift right by immediate and accumulate. + void ursra(const VRegister& vd, + const VRegister& vn, + int shift); + + // Shift right narrow by immediate. + void shrn(const VRegister& vd, + const VRegister& vn, + int shift); + + // Shift right narrow by immediate (second part). + void shrn2(const VRegister& vd, + const VRegister& vn, + int shift); + + // Rounding shift right narrow by immediate. + void rshrn(const VRegister& vd, + const VRegister& vn, + int shift); + + // Rounding shift right narrow by immediate (second part). + void rshrn2(const VRegister& vd, + const VRegister& vn, + int shift); + + // Unsigned saturating shift right narrow by immediate. + void uqshrn(const VRegister& vd, + const VRegister& vn, + int shift); + + // Unsigned saturating shift right narrow by immediate (second part). + void uqshrn2(const VRegister& vd, + const VRegister& vn, + int shift); + + // Unsigned saturating rounding shift right narrow by immediate. + void uqrshrn(const VRegister& vd, + const VRegister& vn, + int shift); + + // Unsigned saturating rounding shift right narrow by immediate (second part). + void uqrshrn2(const VRegister& vd, + const VRegister& vn, + int shift); + + // Signed saturating shift right narrow by immediate. + void sqshrn(const VRegister& vd, + const VRegister& vn, + int shift); + + // Signed saturating shift right narrow by immediate (second part). + void sqshrn2(const VRegister& vd, + const VRegister& vn, + int shift); + + // Signed saturating rounded shift right narrow by immediate. + void sqrshrn(const VRegister& vd, + const VRegister& vn, + int shift); + + // Signed saturating rounded shift right narrow by immediate (second part). + void sqrshrn2(const VRegister& vd, + const VRegister& vn, + int shift); + + // Signed saturating shift right unsigned narrow by immediate. + void sqshrun(const VRegister& vd, + const VRegister& vn, + int shift); + + // Signed saturating shift right unsigned narrow by immediate (second part). + void sqshrun2(const VRegister& vd, + const VRegister& vn, + int shift); + + // Signed sat rounded shift right unsigned narrow by immediate. + void sqrshrun(const VRegister& vd, + const VRegister& vn, + int shift); + + // Signed sat rounded shift right unsigned narrow by immediate (second part). + void sqrshrun2(const VRegister& vd, + const VRegister& vn, + int shift); + + // FP reciprocal step. + void frecps(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // FP reciprocal estimate. + void frecpe(const VRegister& vd, + const VRegister& vn); + + // FP reciprocal square root estimate. + void frsqrte(const VRegister& vd, + const VRegister& vn); + + // FP reciprocal square root step. + void frsqrts(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed absolute difference and accumulate long. + void sabal(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed absolute difference and accumulate long (second part). + void sabal2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned absolute difference and accumulate long. + void uabal(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned absolute difference and accumulate long (second part). + void uabal2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed absolute difference long. + void sabdl(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed absolute difference long (second part). + void sabdl2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned absolute difference long. + void uabdl(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned absolute difference long (second part). + void uabdl2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Polynomial multiply long. + void pmull(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Polynomial multiply long (second part). + void pmull2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed long multiply-add. + void smlal(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed long multiply-add (second part). + void smlal2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned long multiply-add. + void umlal(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned long multiply-add (second part). + void umlal2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed long multiply-sub. + void smlsl(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed long multiply-sub (second part). + void smlsl2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned long multiply-sub. + void umlsl(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned long multiply-sub (second part). + void umlsl2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed long multiply. + void smull(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed long multiply (second part). + void smull2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed saturating doubling long multiply-add. + void sqdmlal(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed saturating doubling long multiply-add (second part). + void sqdmlal2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed saturating doubling long multiply-subtract. + void sqdmlsl(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed saturating doubling long multiply-subtract (second part). + void sqdmlsl2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed saturating doubling long multiply. + void sqdmull(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed saturating doubling long multiply (second part). + void sqdmull2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed saturating doubling multiply returning high half. + void sqdmulh(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed saturating rounding doubling multiply returning high half. + void sqrdmulh(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Signed saturating doubling multiply element returning high half. + void sqdmulh(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // Signed saturating rounding doubling multiply element returning high half. + void sqrdmulh(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // Unsigned long multiply long. + void umull(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Unsigned long multiply (second part). + void umull2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Add narrow returning high half. + void addhn(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Add narrow returning high half (second part). + void addhn2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Rounding add narrow returning high half. + void raddhn(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Rounding add narrow returning high half (second part). + void raddhn2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Subtract narrow returning high half. + void subhn(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Subtract narrow returning high half (second part). + void subhn2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Rounding subtract narrow returning high half. + void rsubhn(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // Rounding subtract narrow returning high half (second part). + void rsubhn2(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // FP vector multiply accumulate. + void fmla(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // FP vector multiply subtract. + void fmls(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // FP vector multiply extended. + void fmulx(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // FP absolute greater than or equal. + void facge(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // FP absolute greater than. + void facgt(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // FP multiply by element. + void fmul(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // FP fused multiply-add to accumulator by element. + void fmla(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // FP fused multiply-sub from accumulator by element. + void fmls(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // FP multiply extended by element. + void fmulx(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index); + + // FP compare equal. + void fcmeq(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // FP greater than. + void fcmgt(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // FP greater than or equal. + void fcmge(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // FP compare equal to zero. + void fcmeq(const VRegister& vd, + const VRegister& vn, + double imm); + + // FP greater than zero. + void fcmgt(const VRegister& vd, + const VRegister& vn, + double imm); + + // FP greater than or equal to zero. + void fcmge(const VRegister& vd, + const VRegister& vn, + double imm); + + // FP less than or equal to zero. + void fcmle(const VRegister& vd, + const VRegister& vn, + double imm); + + // FP less than to zero. + void fcmlt(const VRegister& vd, + const VRegister& vn, + double imm); + + // FP absolute difference. + void fabd(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // FP pairwise add vector. + void faddp(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // FP pairwise add scalar. + void faddp(const VRegister& vd, + const VRegister& vn); + + // FP pairwise maximum vector. + void fmaxp(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // FP pairwise maximum scalar. + void fmaxp(const VRegister& vd, + const VRegister& vn); + + // FP pairwise minimum vector. + void fminp(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // FP pairwise minimum scalar. + void fminp(const VRegister& vd, + const VRegister& vn); + + // FP pairwise maximum number vector. + void fmaxnmp(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // FP pairwise maximum number scalar. + void fmaxnmp(const VRegister& vd, + const VRegister& vn); + + // FP pairwise minimum number vector. + void fminnmp(const VRegister& vd, + const VRegister& vn, + const VRegister& vm); + + // FP pairwise minimum number scalar. + void fminnmp(const VRegister& vd, + const VRegister& vn); + + // Emit generic instructions. + // Emit raw instructions into the instruction stream. + void dci(Instr raw_inst) { Emit(raw_inst); } + + // Emit 32 bits of data into the instruction stream. + void dc32(uint32_t data) { + VIXL_ASSERT(buffer_monitor_ > 0); + buffer_->Emit32(data); + } + + // Emit 64 bits of data into the instruction stream. + void dc64(uint64_t data) { + VIXL_ASSERT(buffer_monitor_ > 0); + buffer_->Emit64(data); + } + + // Copy a string into the instruction stream, including the terminating NULL + // character. The instruction pointer is then aligned correctly for + // subsequent instructions. + void EmitString(const char * string) { + VIXL_ASSERT(string != NULL); + VIXL_ASSERT(buffer_monitor_ > 0); + + buffer_->EmitString(string); + buffer_->Align(); + } + + // Code generation helpers. + + // Register encoding. + static Instr Rd(CPURegister rd) { + VIXL_ASSERT(rd.code() != kSPRegInternalCode); + return rd.code() << Rd_offset; + } + + static Instr Rn(CPURegister rn) { + VIXL_ASSERT(rn.code() != kSPRegInternalCode); + return rn.code() << Rn_offset; + } + + static Instr Rm(CPURegister rm) { + VIXL_ASSERT(rm.code() != kSPRegInternalCode); + return rm.code() << Rm_offset; + } + + static Instr RmNot31(CPURegister rm) { + VIXL_ASSERT(rm.code() != kSPRegInternalCode); + VIXL_ASSERT(!rm.IsZero()); + return Rm(rm); + } + + static Instr Ra(CPURegister ra) { + VIXL_ASSERT(ra.code() != kSPRegInternalCode); + return ra.code() << Ra_offset; + } + + static Instr Rt(CPURegister rt) { + VIXL_ASSERT(rt.code() != kSPRegInternalCode); + return rt.code() << Rt_offset; + } + + static Instr Rt2(CPURegister rt2) { + VIXL_ASSERT(rt2.code() != kSPRegInternalCode); + return rt2.code() << Rt2_offset; + } + + static Instr Rs(CPURegister rs) { + VIXL_ASSERT(rs.code() != kSPRegInternalCode); + return rs.code() << Rs_offset; + } + + // These encoding functions allow the stack pointer to be encoded, and + // disallow the zero register. + static Instr RdSP(Register rd) { + VIXL_ASSERT(!rd.IsZero()); + return (rd.code() & kRegCodeMask) << Rd_offset; + } + + static Instr RnSP(Register rn) { + VIXL_ASSERT(!rn.IsZero()); + return (rn.code() & kRegCodeMask) << Rn_offset; + } + + // Flags encoding. + static Instr Flags(FlagsUpdate S) { + if (S == SetFlags) { + return 1 << FlagsUpdate_offset; + } else if (S == LeaveFlags) { + return 0 << FlagsUpdate_offset; + } + VIXL_UNREACHABLE(); + return 0; + } + + static Instr Cond(Condition cond) { + return cond << Condition_offset; + } + + // PC-relative address encoding. + static Instr ImmPCRelAddress(int imm21) { + VIXL_ASSERT(is_int21(imm21)); + Instr imm = static_cast<Instr>(truncate_to_int21(imm21)); + Instr immhi = (imm >> ImmPCRelLo_width) << ImmPCRelHi_offset; + Instr immlo = imm << ImmPCRelLo_offset; + return (immhi & ImmPCRelHi_mask) | (immlo & ImmPCRelLo_mask); + } + + // Branch encoding. + static Instr ImmUncondBranch(int imm26) { + VIXL_ASSERT(is_int26(imm26)); + return truncate_to_int26(imm26) << ImmUncondBranch_offset; + } + + static Instr ImmCondBranch(int imm19) { + VIXL_ASSERT(is_int19(imm19)); + return truncate_to_int19(imm19) << ImmCondBranch_offset; + } + + static Instr ImmCmpBranch(int imm19) { + VIXL_ASSERT(is_int19(imm19)); + return truncate_to_int19(imm19) << ImmCmpBranch_offset; + } + + static Instr ImmTestBranch(int imm14) { + VIXL_ASSERT(is_int14(imm14)); + return truncate_to_int14(imm14) << ImmTestBranch_offset; + } + + static Instr ImmTestBranchBit(unsigned bit_pos) { + VIXL_ASSERT(is_uint6(bit_pos)); + // Subtract five from the shift offset, as we need bit 5 from bit_pos. + unsigned b5 = bit_pos << (ImmTestBranchBit5_offset - 5); + unsigned b40 = bit_pos << ImmTestBranchBit40_offset; + b5 &= ImmTestBranchBit5_mask; + b40 &= ImmTestBranchBit40_mask; + return b5 | b40; + } + + // Data Processing encoding. + static Instr SF(Register rd) { + return rd.Is64Bits() ? SixtyFourBits : ThirtyTwoBits; + } + + static Instr ImmAddSub(int imm) { + VIXL_ASSERT(IsImmAddSub(imm)); + if (is_uint12(imm)) { // No shift required. + imm <<= ImmAddSub_offset; + } else { + imm = ((imm >> 12) << ImmAddSub_offset) | (1 << ShiftAddSub_offset); + } + return imm; + } + + static Instr ImmS(unsigned imms, unsigned reg_size) { + VIXL_ASSERT(((reg_size == kXRegSize) && is_uint6(imms)) || + ((reg_size == kWRegSize) && is_uint5(imms))); + USE(reg_size); + return imms << ImmS_offset; + } + + static Instr ImmR(unsigned immr, unsigned reg_size) { + VIXL_ASSERT(((reg_size == kXRegSize) && is_uint6(immr)) || + ((reg_size == kWRegSize) && is_uint5(immr))); + USE(reg_size); + VIXL_ASSERT(is_uint6(immr)); + return immr << ImmR_offset; + } + + static Instr ImmSetBits(unsigned imms, unsigned reg_size) { + VIXL_ASSERT((reg_size == kWRegSize) || (reg_size == kXRegSize)); + VIXL_ASSERT(is_uint6(imms)); + VIXL_ASSERT((reg_size == kXRegSize) || is_uint6(imms + 3)); + USE(reg_size); + return imms << ImmSetBits_offset; + } + + static Instr ImmRotate(unsigned immr, unsigned reg_size) { + VIXL_ASSERT((reg_size == kWRegSize) || (reg_size == kXRegSize)); + VIXL_ASSERT(((reg_size == kXRegSize) && is_uint6(immr)) || + ((reg_size == kWRegSize) && is_uint5(immr))); + USE(reg_size); + return immr << ImmRotate_offset; + } + + static Instr ImmLLiteral(int imm19) { + VIXL_ASSERT(is_int19(imm19)); + return truncate_to_int19(imm19) << ImmLLiteral_offset; + } + + static Instr BitN(unsigned bitn, unsigned reg_size) { + VIXL_ASSERT((reg_size == kWRegSize) || (reg_size == kXRegSize)); + VIXL_ASSERT((reg_size == kXRegSize) || (bitn == 0)); + USE(reg_size); + return bitn << BitN_offset; + } + + static Instr ShiftDP(Shift shift) { + VIXL_ASSERT(shift == LSL || shift == LSR || shift == ASR || shift == ROR); + return shift << ShiftDP_offset; + } + + static Instr ImmDPShift(unsigned amount) { + VIXL_ASSERT(is_uint6(amount)); + return amount << ImmDPShift_offset; + } + + static Instr ExtendMode(Extend extend) { + return extend << ExtendMode_offset; + } + + static Instr ImmExtendShift(unsigned left_shift) { + VIXL_ASSERT(left_shift <= 4); + return left_shift << ImmExtendShift_offset; + } + + static Instr ImmCondCmp(unsigned imm) { + VIXL_ASSERT(is_uint5(imm)); + return imm << ImmCondCmp_offset; + } + + static Instr Nzcv(StatusFlags nzcv) { + return ((nzcv >> Flags_offset) & 0xf) << Nzcv_offset; + } + + // MemOperand offset encoding. + static Instr ImmLSUnsigned(int imm12) { + VIXL_ASSERT(is_uint12(imm12)); + return imm12 << ImmLSUnsigned_offset; + } + + static Instr ImmLS(int imm9) { + VIXL_ASSERT(is_int9(imm9)); + return truncate_to_int9(imm9) << ImmLS_offset; + } + + static Instr ImmLSPair(int imm7, unsigned access_size) { + VIXL_ASSERT(((imm7 >> access_size) << access_size) == imm7); + int scaled_imm7 = imm7 >> access_size; + VIXL_ASSERT(is_int7(scaled_imm7)); + return truncate_to_int7(scaled_imm7) << ImmLSPair_offset; + } + + static Instr ImmShiftLS(unsigned shift_amount) { + VIXL_ASSERT(is_uint1(shift_amount)); + return shift_amount << ImmShiftLS_offset; + } + + static Instr ImmPrefetchOperation(int imm5) { + VIXL_ASSERT(is_uint5(imm5)); + return imm5 << ImmPrefetchOperation_offset; + } + + static Instr ImmException(int imm16) { + VIXL_ASSERT(is_uint16(imm16)); + return imm16 << ImmException_offset; + } + + static Instr ImmSystemRegister(int imm15) { + VIXL_ASSERT(is_uint15(imm15)); + return imm15 << ImmSystemRegister_offset; + } + + static Instr ImmHint(int imm7) { + VIXL_ASSERT(is_uint7(imm7)); + return imm7 << ImmHint_offset; + } + + static Instr CRm(int imm4) { + VIXL_ASSERT(is_uint4(imm4)); + return imm4 << CRm_offset; + } + + static Instr CRn(int imm4) { + VIXL_ASSERT(is_uint4(imm4)); + return imm4 << CRn_offset; + } + + static Instr SysOp(int imm14) { + VIXL_ASSERT(is_uint14(imm14)); + return imm14 << SysOp_offset; + } + + static Instr ImmSysOp1(int imm3) { + VIXL_ASSERT(is_uint3(imm3)); + return imm3 << SysOp1_offset; + } + + static Instr ImmSysOp2(int imm3) { + VIXL_ASSERT(is_uint3(imm3)); + return imm3 << SysOp2_offset; + } + + static Instr ImmBarrierDomain(int imm2) { + VIXL_ASSERT(is_uint2(imm2)); + return imm2 << ImmBarrierDomain_offset; + } + + static Instr ImmBarrierType(int imm2) { + VIXL_ASSERT(is_uint2(imm2)); + return imm2 << ImmBarrierType_offset; + } + + // Move immediates encoding. + static Instr ImmMoveWide(uint64_t imm) { + VIXL_ASSERT(is_uint16(imm)); + return static_cast<Instr>(imm << ImmMoveWide_offset); + } + + static Instr ShiftMoveWide(int64_t shift) { + VIXL_ASSERT(is_uint2(shift)); + return static_cast<Instr>(shift << ShiftMoveWide_offset); + } + + // FP Immediates. + static Instr ImmFP32(float imm); + static Instr ImmFP64(double imm); + + // FP register type. + static Instr FPType(FPRegister fd) { + return fd.Is64Bits() ? FP64 : FP32; + } + + static Instr FPScale(unsigned scale) { + VIXL_ASSERT(is_uint6(scale)); + return scale << FPScale_offset; + } + + // Immediate field checking helpers. + static bool IsImmAddSub(int64_t immediate); + static bool IsImmConditionalCompare(int64_t immediate); + static bool IsImmFP32(float imm); + static bool IsImmFP64(double imm); + static bool IsImmLogical(uint64_t value, + unsigned width, + unsigned* n = NULL, + unsigned* imm_s = NULL, + unsigned* imm_r = NULL); + static bool IsImmLSPair(int64_t offset, unsigned access_size); + static bool IsImmLSScaled(int64_t offset, unsigned access_size); + static bool IsImmLSUnscaled(int64_t offset); + static bool IsImmMovn(uint64_t imm, unsigned reg_size); + static bool IsImmMovz(uint64_t imm, unsigned reg_size); + + // Instruction bits for vector format in data processing operations. + static Instr VFormat(VRegister vd) { + if (vd.Is64Bits()) { + switch (vd.lanes()) { + case 2: return NEON_2S; + case 4: return NEON_4H; + case 8: return NEON_8B; + default: return 0xffffffff; + } + } else { + VIXL_ASSERT(vd.Is128Bits()); + switch (vd.lanes()) { + case 2: return NEON_2D; + case 4: return NEON_4S; + case 8: return NEON_8H; + case 16: return NEON_16B; + default: return 0xffffffff; + } + } + } + + // Instruction bits for vector format in floating point data processing + // operations. + static Instr FPFormat(VRegister vd) { + if (vd.lanes() == 1) { + // Floating point scalar formats. + VIXL_ASSERT(vd.Is32Bits() || vd.Is64Bits()); + return vd.Is64Bits() ? FP64 : FP32; + } + + // Two lane floating point vector formats. + if (vd.lanes() == 2) { + VIXL_ASSERT(vd.Is64Bits() || vd.Is128Bits()); + return vd.Is128Bits() ? NEON_FP_2D : NEON_FP_2S; + } + + // Four lane floating point vector format. + VIXL_ASSERT((vd.lanes() == 4) && vd.Is128Bits()); + return NEON_FP_4S; + } + + // Instruction bits for vector format in load and store operations. + static Instr LSVFormat(VRegister vd) { + if (vd.Is64Bits()) { + switch (vd.lanes()) { + case 1: return LS_NEON_1D; + case 2: return LS_NEON_2S; + case 4: return LS_NEON_4H; + case 8: return LS_NEON_8B; + default: return 0xffffffff; + } + } else { + VIXL_ASSERT(vd.Is128Bits()); + switch (vd.lanes()) { + case 2: return LS_NEON_2D; + case 4: return LS_NEON_4S; + case 8: return LS_NEON_8H; + case 16: return LS_NEON_16B; + default: return 0xffffffff; + } + } + } + + // Instruction bits for scalar format in data processing operations. + static Instr SFormat(VRegister vd) { + VIXL_ASSERT(vd.lanes() == 1); + switch (vd.SizeInBytes()) { + case 1: return NEON_B; + case 2: return NEON_H; + case 4: return NEON_S; + case 8: return NEON_D; + default: return 0xffffffff; + } + } + + static Instr ImmNEONHLM(int index, int num_bits) { + int h, l, m; + if (num_bits == 3) { + VIXL_ASSERT(is_uint3(index)); + h = (index >> 2) & 1; + l = (index >> 1) & 1; + m = (index >> 0) & 1; + } else if (num_bits == 2) { + VIXL_ASSERT(is_uint2(index)); + h = (index >> 1) & 1; + l = (index >> 0) & 1; + m = 0; + } else { + VIXL_ASSERT(is_uint1(index) && (num_bits == 1)); + h = (index >> 0) & 1; + l = 0; + m = 0; + } + return (h << NEONH_offset) | (l << NEONL_offset) | (m << NEONM_offset); + } + + static Instr ImmNEONExt(int imm4) { + VIXL_ASSERT(is_uint4(imm4)); + return imm4 << ImmNEONExt_offset; + } + + static Instr ImmNEON5(Instr format, int index) { + VIXL_ASSERT(is_uint4(index)); + int s = LaneSizeInBytesLog2FromFormat(static_cast<VectorFormat>(format)); + int imm5 = (index << (s + 1)) | (1 << s); + return imm5 << ImmNEON5_offset; + } + + static Instr ImmNEON4(Instr format, int index) { + VIXL_ASSERT(is_uint4(index)); + int s = LaneSizeInBytesLog2FromFormat(static_cast<VectorFormat>(format)); + int imm4 = index << s; + return imm4 << ImmNEON4_offset; + } + + static Instr ImmNEONabcdefgh(int imm8) { + VIXL_ASSERT(is_uint8(imm8)); + Instr instr; + instr = ((imm8 >> 5) & 7) << ImmNEONabc_offset; + instr |= (imm8 & 0x1f) << ImmNEONdefgh_offset; + return instr; + } + + static Instr NEONCmode(int cmode) { + VIXL_ASSERT(is_uint4(cmode)); + return cmode << NEONCmode_offset; + } + + static Instr NEONModImmOp(int op) { + VIXL_ASSERT(is_uint1(op)); + return op << NEONModImmOp_offset; + } + + // Size of the code generated since label to the current position. + size_t SizeOfCodeGeneratedSince(Label* label) const { + VIXL_ASSERT(label->IsBound()); + return buffer_->OffsetFrom(label->location()); + } + + size_t SizeOfCodeGenerated() const { + return buffer_->CursorOffset(); + } + + size_t BufferCapacity() const { return buffer_->capacity(); } + + size_t RemainingBufferSpace() const { return buffer_->RemainingBytes(); } + + void EnsureSpaceFor(size_t amount) { + if (buffer_->RemainingBytes() < amount) { + size_t capacity = buffer_->capacity(); + size_t size = buffer_->CursorOffset(); + do { + // TODO(all): refine. + capacity *= 2; + } while ((capacity - size) < amount); + buffer_->Grow(capacity); + } + } + +#ifdef VIXL_DEBUG + void AcquireBuffer() { + VIXL_ASSERT(buffer_monitor_ >= 0); + buffer_monitor_++; + } + + void ReleaseBuffer() { + buffer_monitor_--; + VIXL_ASSERT(buffer_monitor_ >= 0); + } +#endif + + PositionIndependentCodeOption pic() const { + return pic_; + } + + bool AllowPageOffsetDependentCode() const { + return (pic() == PageOffsetDependentCode) || + (pic() == PositionDependentCode); + } + + static const Register& AppropriateZeroRegFor(const CPURegister& reg) { + return reg.Is64Bits() ? xzr : wzr; + } + + + protected: + void LoadStore(const CPURegister& rt, + const MemOperand& addr, + LoadStoreOp op, + LoadStoreScalingOption option = PreferScaledOffset); + + void LoadStorePair(const CPURegister& rt, + const CPURegister& rt2, + const MemOperand& addr, + LoadStorePairOp op); + void LoadStoreStruct(const VRegister& vt, + const MemOperand& addr, + NEONLoadStoreMultiStructOp op); + void LoadStoreStruct1(const VRegister& vt, + int reg_count, + const MemOperand& addr); + void LoadStoreStructSingle(const VRegister& vt, + uint32_t lane, + const MemOperand& addr, + NEONLoadStoreSingleStructOp op); + void LoadStoreStructSingleAllLanes(const VRegister& vt, + const MemOperand& addr, + NEONLoadStoreSingleStructOp op); + void LoadStoreStructVerify(const VRegister& vt, + const MemOperand& addr, + Instr op); + + void Prefetch(PrefetchOperation op, + const MemOperand& addr, + LoadStoreScalingOption option = PreferScaledOffset); + + // TODO(all): The third parameter should be passed by reference but gcc 4.8.2 + // reports a bogus uninitialised warning then. + void Logical(const Register& rd, + const Register& rn, + const Operand operand, + LogicalOp op); + void LogicalImmediate(const Register& rd, + const Register& rn, + unsigned n, + unsigned imm_s, + unsigned imm_r, + LogicalOp op); + + void ConditionalCompare(const Register& rn, + const Operand& operand, + StatusFlags nzcv, + Condition cond, + ConditionalCompareOp op); + + void AddSubWithCarry(const Register& rd, + const Register& rn, + const Operand& operand, + FlagsUpdate S, + AddSubWithCarryOp op); + + + // Functions for emulating operands not directly supported by the instruction + // set. + void EmitShift(const Register& rd, + const Register& rn, + Shift shift, + unsigned amount); + void EmitExtendShift(const Register& rd, + const Register& rn, + Extend extend, + unsigned left_shift); + + void AddSub(const Register& rd, + const Register& rn, + const Operand& operand, + FlagsUpdate S, + AddSubOp op); + + void NEONTable(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + NEONTableOp op); + + // Find an appropriate LoadStoreOp or LoadStorePairOp for the specified + // registers. Only simple loads are supported; sign- and zero-extension (such + // as in LDPSW_x or LDRB_w) are not supported. + static LoadStoreOp LoadOpFor(const CPURegister& rt); + static LoadStorePairOp LoadPairOpFor(const CPURegister& rt, + const CPURegister& rt2); + static LoadStoreOp StoreOpFor(const CPURegister& rt); + static LoadStorePairOp StorePairOpFor(const CPURegister& rt, + const CPURegister& rt2); + static LoadStorePairNonTemporalOp LoadPairNonTemporalOpFor( + const CPURegister& rt, const CPURegister& rt2); + static LoadStorePairNonTemporalOp StorePairNonTemporalOpFor( + const CPURegister& rt, const CPURegister& rt2); + static LoadLiteralOp LoadLiteralOpFor(const CPURegister& rt); + + + private: + static uint32_t FP32ToImm8(float imm); + static uint32_t FP64ToImm8(double imm); + + // Instruction helpers. + void MoveWide(const Register& rd, + uint64_t imm, + int shift, + MoveWideImmediateOp mov_op); + void DataProcShiftedRegister(const Register& rd, + const Register& rn, + const Operand& operand, + FlagsUpdate S, + Instr op); + void DataProcExtendedRegister(const Register& rd, + const Register& rn, + const Operand& operand, + FlagsUpdate S, + Instr op); + void LoadStorePairNonTemporal(const CPURegister& rt, + const CPURegister& rt2, + const MemOperand& addr, + LoadStorePairNonTemporalOp op); + void LoadLiteral(const CPURegister& rt, uint64_t imm, LoadLiteralOp op); + void ConditionalSelect(const Register& rd, + const Register& rn, + const Register& rm, + Condition cond, + ConditionalSelectOp op); + void DataProcessing1Source(const Register& rd, + const Register& rn, + DataProcessing1SourceOp op); + void DataProcessing3Source(const Register& rd, + const Register& rn, + const Register& rm, + const Register& ra, + DataProcessing3SourceOp op); + void FPDataProcessing1Source(const VRegister& fd, + const VRegister& fn, + FPDataProcessing1SourceOp op); + void FPDataProcessing3Source(const VRegister& fd, + const VRegister& fn, + const VRegister& fm, + const VRegister& fa, + FPDataProcessing3SourceOp op); + void NEONAcrossLanesL(const VRegister& vd, + const VRegister& vn, + NEONAcrossLanesOp op); + void NEONAcrossLanes(const VRegister& vd, + const VRegister& vn, + NEONAcrossLanesOp op); + void NEONModifiedImmShiftLsl(const VRegister& vd, + const int imm8, + const int left_shift, + NEONModifiedImmediateOp op); + void NEONModifiedImmShiftMsl(const VRegister& vd, + const int imm8, + const int shift_amount, + NEONModifiedImmediateOp op); + void NEONFP2Same(const VRegister& vd, + const VRegister& vn, + Instr vop); + void NEON3Same(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + NEON3SameOp vop); + void NEONFP3Same(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + Instr op); + void NEON3DifferentL(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + NEON3DifferentOp vop); + void NEON3DifferentW(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + NEON3DifferentOp vop); + void NEON3DifferentHN(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + NEON3DifferentOp vop); + void NEONFP2RegMisc(const VRegister& vd, + const VRegister& vn, + NEON2RegMiscOp vop, + double value = 0.0); + void NEON2RegMisc(const VRegister& vd, + const VRegister& vn, + NEON2RegMiscOp vop, + int value = 0); + void NEONFP2RegMisc(const VRegister& vd, + const VRegister& vn, + Instr op); + void NEONAddlp(const VRegister& vd, + const VRegister& vn, + NEON2RegMiscOp op); + void NEONPerm(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + NEONPermOp op); + void NEONFPByElement(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index, + NEONByIndexedElementOp op); + void NEONByElement(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index, + NEONByIndexedElementOp op); + void NEONByElementL(const VRegister& vd, + const VRegister& vn, + const VRegister& vm, + int vm_index, + NEONByIndexedElementOp op); + void NEONShiftImmediate(const VRegister& vd, + const VRegister& vn, + NEONShiftImmediateOp op, + int immh_immb); + void NEONShiftLeftImmediate(const VRegister& vd, + const VRegister& vn, + int shift, + NEONShiftImmediateOp op); + void NEONShiftRightImmediate(const VRegister& vd, + const VRegister& vn, + int shift, + NEONShiftImmediateOp op); + void NEONShiftImmediateL(const VRegister& vd, + const VRegister& vn, + int shift, + NEONShiftImmediateOp op); + void NEONShiftImmediateN(const VRegister& vd, + const VRegister& vn, + int shift, + NEONShiftImmediateOp op); + void NEONXtn(const VRegister& vd, + const VRegister& vn, + NEON2RegMiscOp vop); + + Instr LoadStoreStructAddrModeField(const MemOperand& addr); + + // Encode the specified MemOperand for the specified access size and scaling + // preference. + Instr LoadStoreMemOperand(const MemOperand& addr, + unsigned access_size, + LoadStoreScalingOption option); + + // Link the current (not-yet-emitted) instruction to the specified label, then + // return an offset to be encoded in the instruction. If the label is not yet + // bound, an offset of 0 is returned. + ptrdiff_t LinkAndGetByteOffsetTo(Label * label); + ptrdiff_t LinkAndGetInstructionOffsetTo(Label * label); + ptrdiff_t LinkAndGetPageOffsetTo(Label * label); + + // A common implementation for the LinkAndGet<Type>OffsetTo helpers. + template <int element_shift> + ptrdiff_t LinkAndGetOffsetTo(Label* label); + + // Literal load offset are in words (32-bit). + ptrdiff_t LinkAndGetWordOffsetTo(RawLiteral* literal); + + // Emit the instruction in buffer_. + void Emit(Instr instruction) { + VIXL_STATIC_ASSERT(sizeof(instruction) == kInstructionSize); + VIXL_ASSERT(buffer_monitor_ > 0); + buffer_->Emit32(instruction); + } + + // Buffer where the code is emitted. + CodeBuffer* buffer_; + PositionIndependentCodeOption pic_; + +#ifdef VIXL_DEBUG + int64_t buffer_monitor_; +#endif +}; + + +// All Assembler emits MUST acquire/release the underlying code buffer. The +// helper scope below will do so and optionally ensure the buffer is big enough +// to receive the emit. It is possible to request the scope not to perform any +// checks (kNoCheck) if for example it is known in advance the buffer size is +// adequate or there is some other size checking mechanism in place. +class CodeBufferCheckScope { + public: + // Tell whether or not the scope needs to ensure the associated CodeBuffer + // has enough space for the requested size. + enum CheckPolicy { + kNoCheck, + kCheck + }; + + // Tell whether or not the scope should assert the amount of code emitted + // within the scope is consistent with the requested amount. + enum AssertPolicy { + kNoAssert, // No assert required. + kExactSize, // The code emitted must be exactly size bytes. + kMaximumSize // The code emitted must be at most size bytes. + }; + + CodeBufferCheckScope(Assembler* assm, + size_t size, + CheckPolicy check_policy = kCheck, + AssertPolicy assert_policy = kMaximumSize) + : assm_(assm) { + if (check_policy == kCheck) assm->EnsureSpaceFor(size); +#ifdef VIXL_DEBUG + assm->bind(&start_); + size_ = size; + assert_policy_ = assert_policy; + assm->AcquireBuffer(); +#else + USE(assert_policy); +#endif + } + + // This is a shortcut for CodeBufferCheckScope(assm, 0, kNoCheck, kNoAssert). + explicit CodeBufferCheckScope(Assembler* assm) : assm_(assm) { +#ifdef VIXL_DEBUG + size_ = 0; + assert_policy_ = kNoAssert; + assm->AcquireBuffer(); +#endif + } + + ~CodeBufferCheckScope() { +#ifdef VIXL_DEBUG + assm_->ReleaseBuffer(); + switch (assert_policy_) { + case kNoAssert: break; + case kExactSize: + VIXL_ASSERT(assm_->SizeOfCodeGeneratedSince(&start_) == size_); + break; + case kMaximumSize: + VIXL_ASSERT(assm_->SizeOfCodeGeneratedSince(&start_) <= size_); + break; + default: + VIXL_UNREACHABLE(); + } +#endif + } + + protected: + Assembler* assm_; +#ifdef VIXL_DEBUG + Label start_; + size_t size_; + AssertPolicy assert_policy_; +#endif +}; + + +template <typename T> +void Literal<T>::UpdateValue(T new_value, const Assembler* assembler) { + return UpdateValue(new_value, assembler->GetStartAddress<uint8_t*>()); +} + + +template <typename T> +void Literal<T>::UpdateValue(T high64, T low64, const Assembler* assembler) { + return UpdateValue(high64, low64, assembler->GetStartAddress<uint8_t*>()); +} + + +} // namespace vixl + +#endif // VIXL_A64_ASSEMBLER_A64_H_ diff --git a/qemu/disas/libvixl/a64/constants-a64.h b/qemu/disas/libvixl/vixl/a64/constants-a64.h index bc1a2c4b9..2caa73af8 100644 --- a/qemu/disas/libvixl/a64/constants-a64.h +++ b/qemu/disas/libvixl/vixl/a64/constants-a64.h @@ -1,4 +1,4 @@ -// Copyright 2013, ARM Limited +// Copyright 2015, ARM Limited // All rights reserved. // // Redistribution and use in source and binary forms, with or without @@ -30,7 +30,14 @@ namespace vixl { const unsigned kNumberOfRegisters = 32; -const unsigned kNumberOfFPRegisters = 32; +const unsigned kNumberOfVRegisters = 32; +const unsigned kNumberOfFPRegisters = kNumberOfVRegisters; +// Callee saved registers are x21-x30(lr). +const int kNumberOfCalleeSavedRegisters = 10; +const int kFirstCalleeSavedRegisterIndex = 21; +// Callee saved FP registers are d8-d15. +const int kNumberOfCalleeSavedFPRegisters = 8; +const int kFirstCalleeSavedFPRegisterIndex = 8; #define REGISTER_CODE_LIST(R) \ R(0) R(1) R(2) R(3) R(4) R(5) R(6) R(7) \ @@ -100,8 +107,10 @@ V_(FPScale, 15, 10, Bits) \ V_(ImmLS, 20, 12, SignedBits) \ V_(ImmLSUnsigned, 21, 10, Bits) \ V_(ImmLSPair, 21, 15, SignedBits) \ -V_(SizeLS, 31, 30, Bits) \ V_(ImmShiftLS, 12, 12, Bits) \ +V_(LSOpc, 23, 22, Bits) \ +V_(LSVector, 26, 26, Bits) \ +V_(LSSize, 31, 30, Bits) \ V_(ImmPrefetchOperation, 4, 0, Bits) \ V_(PrefetchHint, 4, 3, Bits) \ V_(PrefetchTarget, 2, 1, Bits) \ @@ -116,9 +125,10 @@ V_(ImmHint, 11, 5, Bits) \ V_(ImmBarrierDomain, 11, 10, Bits) \ V_(ImmBarrierType, 9, 8, Bits) \ \ -/* System (MRS, MSR) */ \ +/* System (MRS, MSR, SYS) */ \ V_(ImmSystemRegister, 19, 5, Bits) \ V_(SysO0, 19, 19, Bits) \ +V_(SysOp, 18, 5, Bits) \ V_(SysOp1, 18, 16, Bits) \ V_(SysOp2, 7, 5, Bits) \ V_(CRn, 15, 12, Bits) \ @@ -130,7 +140,29 @@ V_(LdStXNotExclusive, 23, 23, Bits) \ V_(LdStXAcquireRelease, 15, 15, Bits) \ V_(LdStXSizeLog2, 31, 30, Bits) \ V_(LdStXPair, 21, 21, Bits) \ - + \ +/* NEON generic fields */ \ +V_(NEONQ, 30, 30, Bits) \ +V_(NEONSize, 23, 22, Bits) \ +V_(NEONLSSize, 11, 10, Bits) \ +V_(NEONS, 12, 12, Bits) \ +V_(NEONL, 21, 21, Bits) \ +V_(NEONM, 20, 20, Bits) \ +V_(NEONH, 11, 11, Bits) \ +V_(ImmNEONExt, 14, 11, Bits) \ +V_(ImmNEON5, 20, 16, Bits) \ +V_(ImmNEON4, 14, 11, Bits) \ + \ +/* NEON Modified Immediate fields */ \ +V_(ImmNEONabc, 18, 16, Bits) \ +V_(ImmNEONdefgh, 9, 5, Bits) \ +V_(NEONModImmOp, 29, 29, Bits) \ +V_(NEONCmode, 15, 12, Bits) \ + \ +/* NEON Shift Immediate fields */ \ +V_(ImmNEONImmhImmb, 22, 16, Bits) \ +V_(ImmNEONImmh, 22, 19, Bits) \ +V_(ImmNEONImmb, 18, 16, Bits) #define SYSTEM_REGISTER_FIELDS_LIST(V_, M_) \ /* NZCV */ \ @@ -140,7 +172,6 @@ V_(Z, 30, 30, Bits) \ V_(C, 29, 29, Bits) \ V_(V, 28, 28, Bits) \ M_(NZCV, Flags_mask) \ - \ /* FPCR */ \ V_(AHP, 26, 26, Bits) \ V_(DN, 25, 25, Bits) \ @@ -148,7 +179,6 @@ V_(FZ, 24, 24, Bits) \ V_(RMode, 23, 22, Bits) \ M_(FPCR, AHP_mask | DN_mask | FZ_mask | RMode_mask) - // Fields offsets. #define DECLARE_FIELDS_OFFSETS(Name, HighBit, LowBit, X) \ const int Name##_offset = LowBit; \ @@ -166,22 +196,26 @@ const int ImmPCRel_mask = ImmPCRelLo_mask | ImmPCRelHi_mask; // Condition codes. enum Condition { - eq = 0, - ne = 1, - hs = 2, - lo = 3, - mi = 4, - pl = 5, - vs = 6, - vc = 7, - hi = 8, - ls = 9, - ge = 10, - lt = 11, - gt = 12, - le = 13, - al = 14, - nv = 15 // Behaves as always/al. + eq = 0, // Z set Equal. + ne = 1, // Z clear Not equal. + cs = 2, // C set Carry set. + cc = 3, // C clear Carry clear. + mi = 4, // N set Negative. + pl = 5, // N clear Positive or zero. + vs = 6, // V set Overflow. + vc = 7, // V clear No overflow. + hi = 8, // C set, Z clear Unsigned higher. + ls = 9, // C clear or Z set Unsigned lower or same. + ge = 10, // N == V Greater or equal. + lt = 11, // N != V Less than. + gt = 12, // Z clear, N == V Greater than. + le = 13, // Z set or N != V Less then or equal + al = 14, // Always. + nv = 15, // Behaves as always/al. + + // Aliases. + hs = cs, // C set Unsigned higher or same. + lo = cc // C clear Unsigned lower. }; inline Condition InvertCondition(Condition cond) { @@ -191,6 +225,11 @@ inline Condition InvertCondition(Condition cond) { return static_cast<Condition>(cond ^ 1); } +enum FPTrapFlags { + EnableTrap = 1, + DisableTrap = 0 +}; + enum FlagsUpdate { SetFlags = 1, LeaveFlags = 0 @@ -228,7 +267,8 @@ enum Shift { LSL = 0x0, LSR = 0x1, ASR = 0x2, - ROR = 0x3 + ROR = 0x3, + MSL = 0x4 }; enum Extend { @@ -305,6 +345,32 @@ enum SystemRegister { (0x0 << SysOp2_offset)) >> ImmSystemRegister_offset }; +enum InstructionCacheOp { + IVAU = ((0x3 << SysOp1_offset) | + (0x7 << CRn_offset) | + (0x5 << CRm_offset) | + (0x1 << SysOp2_offset)) >> SysOp_offset +}; + +enum DataCacheOp { + CVAC = ((0x3 << SysOp1_offset) | + (0x7 << CRn_offset) | + (0xa << CRm_offset) | + (0x1 << SysOp2_offset)) >> SysOp_offset, + CVAU = ((0x3 << SysOp1_offset) | + (0x7 << CRn_offset) | + (0xb << CRm_offset) | + (0x1 << SysOp2_offset)) >> SysOp_offset, + CIVAC = ((0x3 << SysOp1_offset) | + (0x7 << CRn_offset) | + (0xe << CRm_offset) | + (0x1 << SysOp2_offset)) >> SysOp_offset, + ZVA = ((0x3 << SysOp1_offset) | + (0x7 << CRn_offset) | + (0x4 << CRm_offset) | + (0x1 << SysOp2_offset)) >> SysOp_offset +}; + // Instruction enumerations. // // These are the masks that define a class of instructions, and the list of @@ -333,6 +399,47 @@ enum GenericInstrField { FP64 = 0x00400000 }; +enum NEONFormatField { + NEONFormatFieldMask = 0x40C00000, + NEON_Q = 0x40000000, + NEON_8B = 0x00000000, + NEON_16B = NEON_8B | NEON_Q, + NEON_4H = 0x00400000, + NEON_8H = NEON_4H | NEON_Q, + NEON_2S = 0x00800000, + NEON_4S = NEON_2S | NEON_Q, + NEON_1D = 0x00C00000, + NEON_2D = 0x00C00000 | NEON_Q +}; + +enum NEONFPFormatField { + NEONFPFormatFieldMask = 0x40400000, + NEON_FP_2S = FP32, + NEON_FP_4S = FP32 | NEON_Q, + NEON_FP_2D = FP64 | NEON_Q +}; + +enum NEONLSFormatField { + NEONLSFormatFieldMask = 0x40000C00, + LS_NEON_8B = 0x00000000, + LS_NEON_16B = LS_NEON_8B | NEON_Q, + LS_NEON_4H = 0x00000400, + LS_NEON_8H = LS_NEON_4H | NEON_Q, + LS_NEON_2S = 0x00000800, + LS_NEON_4S = LS_NEON_2S | NEON_Q, + LS_NEON_1D = 0x00000C00, + LS_NEON_2D = LS_NEON_1D | NEON_Q +}; + +enum NEONScalarFormatField { + NEONScalarFormatFieldMask = 0x00C00000, + NEONScalar = 0x10000000, + NEON_B = 0x00000000, + NEON_H = 0x00400000, + NEON_S = 0x00800000, + NEON_D = 0x00C00000 +}; + // PC relative addressing. enum PCRelAddressingOp { PCRelAddressingFixed = 0x10000000, @@ -588,6 +695,13 @@ enum SystemHintOp { HINT = SystemHintFixed | 0x00000000 }; +enum SystemSysOp { + SystemSysFixed = 0xD5080000, + SystemSysFMask = 0xFFF80000, + SystemSysMask = 0xFFF80000, + SYS = SystemSysFixed | 0x00000000 +}; + // Exception. enum ExceptionOp { ExceptionFixed = 0xD4000000, @@ -640,7 +754,9 @@ enum LoadStorePairAnyOp { V(STP, s, 0x04000000), \ V(LDP, s, 0x04400000), \ V(STP, d, 0x44000000), \ - V(LDP, d, 0x44400000) + V(LDP, d, 0x44400000), \ + V(STP, q, 0x84000000), \ + V(LDP, q, 0x84400000) // Load/store pair (post, pre and offset.) enum LoadStorePairOp { @@ -686,6 +802,7 @@ enum LoadStorePairNonTemporalOp { LoadStorePairNonTemporalFixed = 0x28000000, LoadStorePairNonTemporalFMask = 0x3B800000, LoadStorePairNonTemporalMask = 0xFFC00000, + LoadStorePairNonTemporalLBit = 1 << 22, STNP_w = LoadStorePairNonTemporalFixed | STP_w, LDNP_w = LoadStorePairNonTemporalFixed | LDP_w, STNP_x = LoadStorePairNonTemporalFixed | STP_x, @@ -693,7 +810,9 @@ enum LoadStorePairNonTemporalOp { STNP_s = LoadStorePairNonTemporalFixed | STP_s, LDNP_s = LoadStorePairNonTemporalFixed | LDP_s, STNP_d = LoadStorePairNonTemporalFixed | STP_d, - LDNP_d = LoadStorePairNonTemporalFixed | LDP_d + LDNP_d = LoadStorePairNonTemporalFixed | LDP_d, + STNP_q = LoadStorePairNonTemporalFixed | STP_q, + LDNP_q = LoadStorePairNonTemporalFixed | LDP_q }; // Load literal. @@ -706,7 +825,8 @@ enum LoadLiteralOp { LDRSW_x_lit = LoadLiteralFixed | 0x80000000, PRFM_lit = LoadLiteralFixed | 0xC0000000, LDR_s_lit = LoadLiteralFixed | 0x04000000, - LDR_d_lit = LoadLiteralFixed | 0x44000000 + LDR_d_lit = LoadLiteralFixed | 0x44000000, + LDR_q_lit = LoadLiteralFixed | 0x84000000 }; #define LOAD_STORE_OP_LIST(V) \ @@ -723,15 +843,21 @@ enum LoadLiteralOp { V(LD, RSW, x, 0x80800000), \ V(LD, RSB, w, 0x00C00000), \ V(LD, RSH, w, 0x40C00000), \ + V(ST, R, b, 0x04000000), \ + V(ST, R, h, 0x44000000), \ V(ST, R, s, 0x84000000), \ V(ST, R, d, 0xC4000000), \ + V(ST, R, q, 0x04800000), \ + V(LD, R, b, 0x04400000), \ + V(LD, R, h, 0x44400000), \ V(LD, R, s, 0x84400000), \ - V(LD, R, d, 0xC4400000) - + V(LD, R, d, 0xC4400000), \ + V(LD, R, q, 0x04C00000) // Load/store (post, pre, offset and unsigned.) enum LoadStoreOp { - LoadStoreOpMask = 0xC4C00000, + LoadStoreMask = 0xC4C00000, + LoadStoreVMask = 0x04000000, #define LOAD_STORE(A, B, C, D) \ A##B##_##C = D LOAD_STORE_OP_LIST(LOAD_STORE), @@ -971,8 +1097,10 @@ enum FPCompareOp { FCMP_zero = FCMP_s_zero, FCMPE_s = FPCompareFixed | 0x00000010, FCMPE_d = FPCompareFixed | FP64 | 0x00000010, + FCMPE = FCMPE_s, FCMPE_s_zero = FPCompareFixed | 0x00000018, - FCMPE_d_zero = FPCompareFixed | FP64 | 0x00000018 + FCMPE_d_zero = FPCompareFixed | FP64 | 0x00000018, + FCMPE_zero = FCMPE_s_zero }; // Floating point conditional compare. @@ -1026,6 +1154,10 @@ enum FPDataProcessing1SourceOp { FSQRT = FSQRT_s, FCVT_ds = FPDataProcessing1SourceFixed | 0x00028000, FCVT_sd = FPDataProcessing1SourceFixed | FP64 | 0x00020000, + FCVT_hs = FPDataProcessing1SourceFixed | 0x00038000, + FCVT_hd = FPDataProcessing1SourceFixed | FP64 | 0x00038000, + FCVT_sh = FPDataProcessing1SourceFixed | 0x00C20000, + FCVT_dh = FPDataProcessing1SourceFixed | 0x00C28000, FRINTN_s = FPDataProcessing1SourceFixed | 0x00040000, FRINTN_d = FPDataProcessing1SourceFixed | FP64 | 0x00040000, FRINTN = FRINTN_s, @@ -1166,7 +1298,9 @@ enum FPIntegerConvertOp { FMOV_ws = FPIntegerConvertFixed | 0x00060000, FMOV_sw = FPIntegerConvertFixed | 0x00070000, FMOV_xd = FMOV_ws | SixtyFourBits | FP64, - FMOV_dx = FMOV_sw | SixtyFourBits | FP64 + FMOV_dx = FMOV_sw | SixtyFourBits | FP64, + FMOV_d1_x = FPIntegerConvertFixed | SixtyFourBits | 0x008F0000, + FMOV_x_d1 = FPIntegerConvertFixed | SixtyFourBits | 0x008E0000 }; // Conversion between fixed point and floating point. @@ -1196,6 +1330,775 @@ enum FPFixedPointConvertOp { UCVTF_dx_fixed = UCVTF_fixed | SixtyFourBits | FP64 }; +// Crypto - two register SHA. +enum Crypto2RegSHAOp { + Crypto2RegSHAFixed = 0x5E280800, + Crypto2RegSHAFMask = 0xFF3E0C00 +}; + +// Crypto - three register SHA. +enum Crypto3RegSHAOp { + Crypto3RegSHAFixed = 0x5E000000, + Crypto3RegSHAFMask = 0xFF208C00 +}; + +// Crypto - AES. +enum CryptoAESOp { + CryptoAESFixed = 0x4E280800, + CryptoAESFMask = 0xFF3E0C00 +}; + +// NEON instructions with two register operands. +enum NEON2RegMiscOp { + NEON2RegMiscFixed = 0x0E200800, + NEON2RegMiscFMask = 0x9F3E0C00, + NEON2RegMiscMask = 0xBF3FFC00, + NEON2RegMiscUBit = 0x20000000, + NEON_REV64 = NEON2RegMiscFixed | 0x00000000, + NEON_REV32 = NEON2RegMiscFixed | 0x20000000, + NEON_REV16 = NEON2RegMiscFixed | 0x00001000, + NEON_SADDLP = NEON2RegMiscFixed | 0x00002000, + NEON_UADDLP = NEON_SADDLP | NEON2RegMiscUBit, + NEON_SUQADD = NEON2RegMiscFixed | 0x00003000, + NEON_USQADD = NEON_SUQADD | NEON2RegMiscUBit, + NEON_CLS = NEON2RegMiscFixed | 0x00004000, + NEON_CLZ = NEON2RegMiscFixed | 0x20004000, + NEON_CNT = NEON2RegMiscFixed | 0x00005000, + NEON_RBIT_NOT = NEON2RegMiscFixed | 0x20005000, + NEON_SADALP = NEON2RegMiscFixed | 0x00006000, + NEON_UADALP = NEON_SADALP | NEON2RegMiscUBit, + NEON_SQABS = NEON2RegMiscFixed | 0x00007000, + NEON_SQNEG = NEON2RegMiscFixed | 0x20007000, + NEON_CMGT_zero = NEON2RegMiscFixed | 0x00008000, + NEON_CMGE_zero = NEON2RegMiscFixed | 0x20008000, + NEON_CMEQ_zero = NEON2RegMiscFixed | 0x00009000, + NEON_CMLE_zero = NEON2RegMiscFixed | 0x20009000, + NEON_CMLT_zero = NEON2RegMiscFixed | 0x0000A000, + NEON_ABS = NEON2RegMiscFixed | 0x0000B000, + NEON_NEG = NEON2RegMiscFixed | 0x2000B000, + NEON_XTN = NEON2RegMiscFixed | 0x00012000, + NEON_SQXTUN = NEON2RegMiscFixed | 0x20012000, + NEON_SHLL = NEON2RegMiscFixed | 0x20013000, + NEON_SQXTN = NEON2RegMiscFixed | 0x00014000, + NEON_UQXTN = NEON_SQXTN | NEON2RegMiscUBit, + + NEON2RegMiscOpcode = 0x0001F000, + NEON_RBIT_NOT_opcode = NEON_RBIT_NOT & NEON2RegMiscOpcode, + NEON_NEG_opcode = NEON_NEG & NEON2RegMiscOpcode, + NEON_XTN_opcode = NEON_XTN & NEON2RegMiscOpcode, + NEON_UQXTN_opcode = NEON_UQXTN & NEON2RegMiscOpcode, + + // These instructions use only one bit of the size field. The other bit is + // used to distinguish between instructions. + NEON2RegMiscFPMask = NEON2RegMiscMask | 0x00800000, + NEON_FABS = NEON2RegMiscFixed | 0x0080F000, + NEON_FNEG = NEON2RegMiscFixed | 0x2080F000, + NEON_FCVTN = NEON2RegMiscFixed | 0x00016000, + NEON_FCVTXN = NEON2RegMiscFixed | 0x20016000, + NEON_FCVTL = NEON2RegMiscFixed | 0x00017000, + NEON_FRINTN = NEON2RegMiscFixed | 0x00018000, + NEON_FRINTA = NEON2RegMiscFixed | 0x20018000, + NEON_FRINTP = NEON2RegMiscFixed | 0x00818000, + NEON_FRINTM = NEON2RegMiscFixed | 0x00019000, + NEON_FRINTX = NEON2RegMiscFixed | 0x20019000, + NEON_FRINTZ = NEON2RegMiscFixed | 0x00819000, + NEON_FRINTI = NEON2RegMiscFixed | 0x20819000, + NEON_FCVTNS = NEON2RegMiscFixed | 0x0001A000, + NEON_FCVTNU = NEON_FCVTNS | NEON2RegMiscUBit, + NEON_FCVTPS = NEON2RegMiscFixed | 0x0081A000, + NEON_FCVTPU = NEON_FCVTPS | NEON2RegMiscUBit, + NEON_FCVTMS = NEON2RegMiscFixed | 0x0001B000, + NEON_FCVTMU = NEON_FCVTMS | NEON2RegMiscUBit, + NEON_FCVTZS = NEON2RegMiscFixed | 0x0081B000, + NEON_FCVTZU = NEON_FCVTZS | NEON2RegMiscUBit, + NEON_FCVTAS = NEON2RegMiscFixed | 0x0001C000, + NEON_FCVTAU = NEON_FCVTAS | NEON2RegMiscUBit, + NEON_FSQRT = NEON2RegMiscFixed | 0x2081F000, + NEON_SCVTF = NEON2RegMiscFixed | 0x0001D000, + NEON_UCVTF = NEON_SCVTF | NEON2RegMiscUBit, + NEON_URSQRTE = NEON2RegMiscFixed | 0x2081C000, + NEON_URECPE = NEON2RegMiscFixed | 0x0081C000, + NEON_FRSQRTE = NEON2RegMiscFixed | 0x2081D000, + NEON_FRECPE = NEON2RegMiscFixed | 0x0081D000, + NEON_FCMGT_zero = NEON2RegMiscFixed | 0x0080C000, + NEON_FCMGE_zero = NEON2RegMiscFixed | 0x2080C000, + NEON_FCMEQ_zero = NEON2RegMiscFixed | 0x0080D000, + NEON_FCMLE_zero = NEON2RegMiscFixed | 0x2080D000, + NEON_FCMLT_zero = NEON2RegMiscFixed | 0x0080E000, + + NEON_FCVTL_opcode = NEON_FCVTL & NEON2RegMiscOpcode, + NEON_FCVTN_opcode = NEON_FCVTN & NEON2RegMiscOpcode +}; + +// NEON instructions with three same-type operands. +enum NEON3SameOp { + NEON3SameFixed = 0x0E200400, + NEON3SameFMask = 0x9F200400, + NEON3SameMask = 0xBF20FC00, + NEON3SameUBit = 0x20000000, + NEON_ADD = NEON3SameFixed | 0x00008000, + NEON_ADDP = NEON3SameFixed | 0x0000B800, + NEON_SHADD = NEON3SameFixed | 0x00000000, + NEON_SHSUB = NEON3SameFixed | 0x00002000, + NEON_SRHADD = NEON3SameFixed | 0x00001000, + NEON_CMEQ = NEON3SameFixed | NEON3SameUBit | 0x00008800, + NEON_CMGE = NEON3SameFixed | 0x00003800, + NEON_CMGT = NEON3SameFixed | 0x00003000, + NEON_CMHI = NEON3SameFixed | NEON3SameUBit | NEON_CMGT, + NEON_CMHS = NEON3SameFixed | NEON3SameUBit | NEON_CMGE, + NEON_CMTST = NEON3SameFixed | 0x00008800, + NEON_MLA = NEON3SameFixed | 0x00009000, + NEON_MLS = NEON3SameFixed | 0x20009000, + NEON_MUL = NEON3SameFixed | 0x00009800, + NEON_PMUL = NEON3SameFixed | 0x20009800, + NEON_SRSHL = NEON3SameFixed | 0x00005000, + NEON_SQSHL = NEON3SameFixed | 0x00004800, + NEON_SQRSHL = NEON3SameFixed | 0x00005800, + NEON_SSHL = NEON3SameFixed | 0x00004000, + NEON_SMAX = NEON3SameFixed | 0x00006000, + NEON_SMAXP = NEON3SameFixed | 0x0000A000, + NEON_SMIN = NEON3SameFixed | 0x00006800, + NEON_SMINP = NEON3SameFixed | 0x0000A800, + NEON_SABD = NEON3SameFixed | 0x00007000, + NEON_SABA = NEON3SameFixed | 0x00007800, + NEON_UABD = NEON3SameFixed | NEON3SameUBit | NEON_SABD, + NEON_UABA = NEON3SameFixed | NEON3SameUBit | NEON_SABA, + NEON_SQADD = NEON3SameFixed | 0x00000800, + NEON_SQSUB = NEON3SameFixed | 0x00002800, + NEON_SUB = NEON3SameFixed | NEON3SameUBit | 0x00008000, + NEON_UHADD = NEON3SameFixed | NEON3SameUBit | NEON_SHADD, + NEON_UHSUB = NEON3SameFixed | NEON3SameUBit | NEON_SHSUB, + NEON_URHADD = NEON3SameFixed | NEON3SameUBit | NEON_SRHADD, + NEON_UMAX = NEON3SameFixed | NEON3SameUBit | NEON_SMAX, + NEON_UMAXP = NEON3SameFixed | NEON3SameUBit | NEON_SMAXP, + NEON_UMIN = NEON3SameFixed | NEON3SameUBit | NEON_SMIN, + NEON_UMINP = NEON3SameFixed | NEON3SameUBit | NEON_SMINP, + NEON_URSHL = NEON3SameFixed | NEON3SameUBit | NEON_SRSHL, + NEON_UQADD = NEON3SameFixed | NEON3SameUBit | NEON_SQADD, + NEON_UQRSHL = NEON3SameFixed | NEON3SameUBit | NEON_SQRSHL, + NEON_UQSHL = NEON3SameFixed | NEON3SameUBit | NEON_SQSHL, + NEON_UQSUB = NEON3SameFixed | NEON3SameUBit | NEON_SQSUB, + NEON_USHL = NEON3SameFixed | NEON3SameUBit | NEON_SSHL, + NEON_SQDMULH = NEON3SameFixed | 0x0000B000, + NEON_SQRDMULH = NEON3SameFixed | 0x2000B000, + + // NEON floating point instructions with three same-type operands. + NEON3SameFPFixed = NEON3SameFixed | 0x0000C000, + NEON3SameFPFMask = NEON3SameFMask | 0x0000C000, + NEON3SameFPMask = NEON3SameMask | 0x00800000, + NEON_FADD = NEON3SameFixed | 0x0000D000, + NEON_FSUB = NEON3SameFixed | 0x0080D000, + NEON_FMUL = NEON3SameFixed | 0x2000D800, + NEON_FDIV = NEON3SameFixed | 0x2000F800, + NEON_FMAX = NEON3SameFixed | 0x0000F000, + NEON_FMAXNM = NEON3SameFixed | 0x0000C000, + NEON_FMAXP = NEON3SameFixed | 0x2000F000, + NEON_FMAXNMP = NEON3SameFixed | 0x2000C000, + NEON_FMIN = NEON3SameFixed | 0x0080F000, + NEON_FMINNM = NEON3SameFixed | 0x0080C000, + NEON_FMINP = NEON3SameFixed | 0x2080F000, + NEON_FMINNMP = NEON3SameFixed | 0x2080C000, + NEON_FMLA = NEON3SameFixed | 0x0000C800, + NEON_FMLS = NEON3SameFixed | 0x0080C800, + NEON_FMULX = NEON3SameFixed | 0x0000D800, + NEON_FRECPS = NEON3SameFixed | 0x0000F800, + NEON_FRSQRTS = NEON3SameFixed | 0x0080F800, + NEON_FABD = NEON3SameFixed | 0x2080D000, + NEON_FADDP = NEON3SameFixed | 0x2000D000, + NEON_FCMEQ = NEON3SameFixed | 0x0000E000, + NEON_FCMGE = NEON3SameFixed | 0x2000E000, + NEON_FCMGT = NEON3SameFixed | 0x2080E000, + NEON_FACGE = NEON3SameFixed | 0x2000E800, + NEON_FACGT = NEON3SameFixed | 0x2080E800, + + // NEON logical instructions with three same-type operands. + NEON3SameLogicalFixed = NEON3SameFixed | 0x00001800, + NEON3SameLogicalFMask = NEON3SameFMask | 0x0000F800, + NEON3SameLogicalMask = 0xBFE0FC00, + NEON3SameLogicalFormatMask = NEON_Q, + NEON_AND = NEON3SameLogicalFixed | 0x00000000, + NEON_ORR = NEON3SameLogicalFixed | 0x00A00000, + NEON_ORN = NEON3SameLogicalFixed | 0x00C00000, + NEON_EOR = NEON3SameLogicalFixed | 0x20000000, + NEON_BIC = NEON3SameLogicalFixed | 0x00400000, + NEON_BIF = NEON3SameLogicalFixed | 0x20C00000, + NEON_BIT = NEON3SameLogicalFixed | 0x20800000, + NEON_BSL = NEON3SameLogicalFixed | 0x20400000 +}; + +// NEON instructions with three different-type operands. +enum NEON3DifferentOp { + NEON3DifferentFixed = 0x0E200000, + NEON3DifferentFMask = 0x9F200C00, + NEON3DifferentMask = 0xFF20FC00, + NEON_ADDHN = NEON3DifferentFixed | 0x00004000, + NEON_ADDHN2 = NEON_ADDHN | NEON_Q, + NEON_PMULL = NEON3DifferentFixed | 0x0000E000, + NEON_PMULL2 = NEON_PMULL | NEON_Q, + NEON_RADDHN = NEON3DifferentFixed | 0x20004000, + NEON_RADDHN2 = NEON_RADDHN | NEON_Q, + NEON_RSUBHN = NEON3DifferentFixed | 0x20006000, + NEON_RSUBHN2 = NEON_RSUBHN | NEON_Q, + NEON_SABAL = NEON3DifferentFixed | 0x00005000, + NEON_SABAL2 = NEON_SABAL | NEON_Q, + NEON_SABDL = NEON3DifferentFixed | 0x00007000, + NEON_SABDL2 = NEON_SABDL | NEON_Q, + NEON_SADDL = NEON3DifferentFixed | 0x00000000, + NEON_SADDL2 = NEON_SADDL | NEON_Q, + NEON_SADDW = NEON3DifferentFixed | 0x00001000, + NEON_SADDW2 = NEON_SADDW | NEON_Q, + NEON_SMLAL = NEON3DifferentFixed | 0x00008000, + NEON_SMLAL2 = NEON_SMLAL | NEON_Q, + NEON_SMLSL = NEON3DifferentFixed | 0x0000A000, + NEON_SMLSL2 = NEON_SMLSL | NEON_Q, + NEON_SMULL = NEON3DifferentFixed | 0x0000C000, + NEON_SMULL2 = NEON_SMULL | NEON_Q, + NEON_SSUBL = NEON3DifferentFixed | 0x00002000, + NEON_SSUBL2 = NEON_SSUBL | NEON_Q, + NEON_SSUBW = NEON3DifferentFixed | 0x00003000, + NEON_SSUBW2 = NEON_SSUBW | NEON_Q, + NEON_SQDMLAL = NEON3DifferentFixed | 0x00009000, + NEON_SQDMLAL2 = NEON_SQDMLAL | NEON_Q, + NEON_SQDMLSL = NEON3DifferentFixed | 0x0000B000, + NEON_SQDMLSL2 = NEON_SQDMLSL | NEON_Q, + NEON_SQDMULL = NEON3DifferentFixed | 0x0000D000, + NEON_SQDMULL2 = NEON_SQDMULL | NEON_Q, + NEON_SUBHN = NEON3DifferentFixed | 0x00006000, + NEON_SUBHN2 = NEON_SUBHN | NEON_Q, + NEON_UABAL = NEON_SABAL | NEON3SameUBit, + NEON_UABAL2 = NEON_UABAL | NEON_Q, + NEON_UABDL = NEON_SABDL | NEON3SameUBit, + NEON_UABDL2 = NEON_UABDL | NEON_Q, + NEON_UADDL = NEON_SADDL | NEON3SameUBit, + NEON_UADDL2 = NEON_UADDL | NEON_Q, + NEON_UADDW = NEON_SADDW | NEON3SameUBit, + NEON_UADDW2 = NEON_UADDW | NEON_Q, + NEON_UMLAL = NEON_SMLAL | NEON3SameUBit, + NEON_UMLAL2 = NEON_UMLAL | NEON_Q, + NEON_UMLSL = NEON_SMLSL | NEON3SameUBit, + NEON_UMLSL2 = NEON_UMLSL | NEON_Q, + NEON_UMULL = NEON_SMULL | NEON3SameUBit, + NEON_UMULL2 = NEON_UMULL | NEON_Q, + NEON_USUBL = NEON_SSUBL | NEON3SameUBit, + NEON_USUBL2 = NEON_USUBL | NEON_Q, + NEON_USUBW = NEON_SSUBW | NEON3SameUBit, + NEON_USUBW2 = NEON_USUBW | NEON_Q +}; + +// NEON instructions operating across vectors. +enum NEONAcrossLanesOp { + NEONAcrossLanesFixed = 0x0E300800, + NEONAcrossLanesFMask = 0x9F3E0C00, + NEONAcrossLanesMask = 0xBF3FFC00, + NEON_ADDV = NEONAcrossLanesFixed | 0x0001B000, + NEON_SADDLV = NEONAcrossLanesFixed | 0x00003000, + NEON_UADDLV = NEONAcrossLanesFixed | 0x20003000, + NEON_SMAXV = NEONAcrossLanesFixed | 0x0000A000, + NEON_SMINV = NEONAcrossLanesFixed | 0x0001A000, + NEON_UMAXV = NEONAcrossLanesFixed | 0x2000A000, + NEON_UMINV = NEONAcrossLanesFixed | 0x2001A000, + + // NEON floating point across instructions. + NEONAcrossLanesFPFixed = NEONAcrossLanesFixed | 0x0000C000, + NEONAcrossLanesFPFMask = NEONAcrossLanesFMask | 0x0000C000, + NEONAcrossLanesFPMask = NEONAcrossLanesMask | 0x00800000, + + NEON_FMAXV = NEONAcrossLanesFPFixed | 0x2000F000, + NEON_FMINV = NEONAcrossLanesFPFixed | 0x2080F000, + NEON_FMAXNMV = NEONAcrossLanesFPFixed | 0x2000C000, + NEON_FMINNMV = NEONAcrossLanesFPFixed | 0x2080C000 +}; + +// NEON instructions with indexed element operand. +enum NEONByIndexedElementOp { + NEONByIndexedElementFixed = 0x0F000000, + NEONByIndexedElementFMask = 0x9F000400, + NEONByIndexedElementMask = 0xBF00F400, + NEON_MUL_byelement = NEONByIndexedElementFixed | 0x00008000, + NEON_MLA_byelement = NEONByIndexedElementFixed | 0x20000000, + NEON_MLS_byelement = NEONByIndexedElementFixed | 0x20004000, + NEON_SMULL_byelement = NEONByIndexedElementFixed | 0x0000A000, + NEON_SMLAL_byelement = NEONByIndexedElementFixed | 0x00002000, + NEON_SMLSL_byelement = NEONByIndexedElementFixed | 0x00006000, + NEON_UMULL_byelement = NEONByIndexedElementFixed | 0x2000A000, + NEON_UMLAL_byelement = NEONByIndexedElementFixed | 0x20002000, + NEON_UMLSL_byelement = NEONByIndexedElementFixed | 0x20006000, + NEON_SQDMULL_byelement = NEONByIndexedElementFixed | 0x0000B000, + NEON_SQDMLAL_byelement = NEONByIndexedElementFixed | 0x00003000, + NEON_SQDMLSL_byelement = NEONByIndexedElementFixed | 0x00007000, + NEON_SQDMULH_byelement = NEONByIndexedElementFixed | 0x0000C000, + NEON_SQRDMULH_byelement = NEONByIndexedElementFixed | 0x0000D000, + + // Floating point instructions. + NEONByIndexedElementFPFixed = NEONByIndexedElementFixed | 0x00800000, + NEONByIndexedElementFPMask = NEONByIndexedElementMask | 0x00800000, + NEON_FMLA_byelement = NEONByIndexedElementFPFixed | 0x00001000, + NEON_FMLS_byelement = NEONByIndexedElementFPFixed | 0x00005000, + NEON_FMUL_byelement = NEONByIndexedElementFPFixed | 0x00009000, + NEON_FMULX_byelement = NEONByIndexedElementFPFixed | 0x20009000 +}; + +// NEON register copy. +enum NEONCopyOp { + NEONCopyFixed = 0x0E000400, + NEONCopyFMask = 0x9FE08400, + NEONCopyMask = 0x3FE08400, + NEONCopyInsElementMask = NEONCopyMask | 0x40000000, + NEONCopyInsGeneralMask = NEONCopyMask | 0x40007800, + NEONCopyDupElementMask = NEONCopyMask | 0x20007800, + NEONCopyDupGeneralMask = NEONCopyDupElementMask, + NEONCopyUmovMask = NEONCopyMask | 0x20007800, + NEONCopySmovMask = NEONCopyMask | 0x20007800, + NEON_INS_ELEMENT = NEONCopyFixed | 0x60000000, + NEON_INS_GENERAL = NEONCopyFixed | 0x40001800, + NEON_DUP_ELEMENT = NEONCopyFixed | 0x00000000, + NEON_DUP_GENERAL = NEONCopyFixed | 0x00000800, + NEON_SMOV = NEONCopyFixed | 0x00002800, + NEON_UMOV = NEONCopyFixed | 0x00003800 +}; + +// NEON extract. +enum NEONExtractOp { + NEONExtractFixed = 0x2E000000, + NEONExtractFMask = 0xBF208400, + NEONExtractMask = 0xBFE08400, + NEON_EXT = NEONExtractFixed | 0x00000000 +}; + +enum NEONLoadStoreMultiOp { + NEONLoadStoreMultiL = 0x00400000, + NEONLoadStoreMulti1_1v = 0x00007000, + NEONLoadStoreMulti1_2v = 0x0000A000, + NEONLoadStoreMulti1_3v = 0x00006000, + NEONLoadStoreMulti1_4v = 0x00002000, + NEONLoadStoreMulti2 = 0x00008000, + NEONLoadStoreMulti3 = 0x00004000, + NEONLoadStoreMulti4 = 0x00000000 +}; + +// NEON load/store multiple structures. +enum NEONLoadStoreMultiStructOp { + NEONLoadStoreMultiStructFixed = 0x0C000000, + NEONLoadStoreMultiStructFMask = 0xBFBF0000, + NEONLoadStoreMultiStructMask = 0xBFFFF000, + NEONLoadStoreMultiStructStore = NEONLoadStoreMultiStructFixed, + NEONLoadStoreMultiStructLoad = NEONLoadStoreMultiStructFixed | + NEONLoadStoreMultiL, + NEON_LD1_1v = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti1_1v, + NEON_LD1_2v = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti1_2v, + NEON_LD1_3v = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti1_3v, + NEON_LD1_4v = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti1_4v, + NEON_LD2 = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti2, + NEON_LD3 = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti3, + NEON_LD4 = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti4, + NEON_ST1_1v = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti1_1v, + NEON_ST1_2v = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti1_2v, + NEON_ST1_3v = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti1_3v, + NEON_ST1_4v = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti1_4v, + NEON_ST2 = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti2, + NEON_ST3 = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti3, + NEON_ST4 = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti4 +}; + +// NEON load/store multiple structures with post-index addressing. +enum NEONLoadStoreMultiStructPostIndexOp { + NEONLoadStoreMultiStructPostIndexFixed = 0x0C800000, + NEONLoadStoreMultiStructPostIndexFMask = 0xBFA00000, + NEONLoadStoreMultiStructPostIndexMask = 0xBFE0F000, + NEONLoadStoreMultiStructPostIndex = 0x00800000, + NEON_LD1_1v_post = NEON_LD1_1v | NEONLoadStoreMultiStructPostIndex, + NEON_LD1_2v_post = NEON_LD1_2v | NEONLoadStoreMultiStructPostIndex, + NEON_LD1_3v_post = NEON_LD1_3v | NEONLoadStoreMultiStructPostIndex, + NEON_LD1_4v_post = NEON_LD1_4v | NEONLoadStoreMultiStructPostIndex, + NEON_LD2_post = NEON_LD2 | NEONLoadStoreMultiStructPostIndex, + NEON_LD3_post = NEON_LD3 | NEONLoadStoreMultiStructPostIndex, + NEON_LD4_post = NEON_LD4 | NEONLoadStoreMultiStructPostIndex, + NEON_ST1_1v_post = NEON_ST1_1v | NEONLoadStoreMultiStructPostIndex, + NEON_ST1_2v_post = NEON_ST1_2v | NEONLoadStoreMultiStructPostIndex, + NEON_ST1_3v_post = NEON_ST1_3v | NEONLoadStoreMultiStructPostIndex, + NEON_ST1_4v_post = NEON_ST1_4v | NEONLoadStoreMultiStructPostIndex, + NEON_ST2_post = NEON_ST2 | NEONLoadStoreMultiStructPostIndex, + NEON_ST3_post = NEON_ST3 | NEONLoadStoreMultiStructPostIndex, + NEON_ST4_post = NEON_ST4 | NEONLoadStoreMultiStructPostIndex +}; + +enum NEONLoadStoreSingleOp { + NEONLoadStoreSingle1 = 0x00000000, + NEONLoadStoreSingle2 = 0x00200000, + NEONLoadStoreSingle3 = 0x00002000, + NEONLoadStoreSingle4 = 0x00202000, + NEONLoadStoreSingleL = 0x00400000, + NEONLoadStoreSingle_b = 0x00000000, + NEONLoadStoreSingle_h = 0x00004000, + NEONLoadStoreSingle_s = 0x00008000, + NEONLoadStoreSingle_d = 0x00008400, + NEONLoadStoreSingleAllLanes = 0x0000C000, + NEONLoadStoreSingleLenMask = 0x00202000 +}; + +// NEON load/store single structure. +enum NEONLoadStoreSingleStructOp { + NEONLoadStoreSingleStructFixed = 0x0D000000, + NEONLoadStoreSingleStructFMask = 0xBF9F0000, + NEONLoadStoreSingleStructMask = 0xBFFFE000, + NEONLoadStoreSingleStructStore = NEONLoadStoreSingleStructFixed, + NEONLoadStoreSingleStructLoad = NEONLoadStoreSingleStructFixed | + NEONLoadStoreSingleL, + NEONLoadStoreSingleStructLoad1 = NEONLoadStoreSingle1 | + NEONLoadStoreSingleStructLoad, + NEONLoadStoreSingleStructLoad2 = NEONLoadStoreSingle2 | + NEONLoadStoreSingleStructLoad, + NEONLoadStoreSingleStructLoad3 = NEONLoadStoreSingle3 | + NEONLoadStoreSingleStructLoad, + NEONLoadStoreSingleStructLoad4 = NEONLoadStoreSingle4 | + NEONLoadStoreSingleStructLoad, + NEONLoadStoreSingleStructStore1 = NEONLoadStoreSingle1 | + NEONLoadStoreSingleStructFixed, + NEONLoadStoreSingleStructStore2 = NEONLoadStoreSingle2 | + NEONLoadStoreSingleStructFixed, + NEONLoadStoreSingleStructStore3 = NEONLoadStoreSingle3 | + NEONLoadStoreSingleStructFixed, + NEONLoadStoreSingleStructStore4 = NEONLoadStoreSingle4 | + NEONLoadStoreSingleStructFixed, + NEON_LD1_b = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingle_b, + NEON_LD1_h = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingle_h, + NEON_LD1_s = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingle_s, + NEON_LD1_d = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingle_d, + NEON_LD1R = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingleAllLanes, + NEON_ST1_b = NEONLoadStoreSingleStructStore1 | NEONLoadStoreSingle_b, + NEON_ST1_h = NEONLoadStoreSingleStructStore1 | NEONLoadStoreSingle_h, + NEON_ST1_s = NEONLoadStoreSingleStructStore1 | NEONLoadStoreSingle_s, + NEON_ST1_d = NEONLoadStoreSingleStructStore1 | NEONLoadStoreSingle_d, + + NEON_LD2_b = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingle_b, + NEON_LD2_h = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingle_h, + NEON_LD2_s = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingle_s, + NEON_LD2_d = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingle_d, + NEON_LD2R = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingleAllLanes, + NEON_ST2_b = NEONLoadStoreSingleStructStore2 | NEONLoadStoreSingle_b, + NEON_ST2_h = NEONLoadStoreSingleStructStore2 | NEONLoadStoreSingle_h, + NEON_ST2_s = NEONLoadStoreSingleStructStore2 | NEONLoadStoreSingle_s, + NEON_ST2_d = NEONLoadStoreSingleStructStore2 | NEONLoadStoreSingle_d, + + NEON_LD3_b = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingle_b, + NEON_LD3_h = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingle_h, + NEON_LD3_s = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingle_s, + NEON_LD3_d = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingle_d, + NEON_LD3R = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingleAllLanes, + NEON_ST3_b = NEONLoadStoreSingleStructStore3 | NEONLoadStoreSingle_b, + NEON_ST3_h = NEONLoadStoreSingleStructStore3 | NEONLoadStoreSingle_h, + NEON_ST3_s = NEONLoadStoreSingleStructStore3 | NEONLoadStoreSingle_s, + NEON_ST3_d = NEONLoadStoreSingleStructStore3 | NEONLoadStoreSingle_d, + + NEON_LD4_b = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingle_b, + NEON_LD4_h = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingle_h, + NEON_LD4_s = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingle_s, + NEON_LD4_d = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingle_d, + NEON_LD4R = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingleAllLanes, + NEON_ST4_b = NEONLoadStoreSingleStructStore4 | NEONLoadStoreSingle_b, + NEON_ST4_h = NEONLoadStoreSingleStructStore4 | NEONLoadStoreSingle_h, + NEON_ST4_s = NEONLoadStoreSingleStructStore4 | NEONLoadStoreSingle_s, + NEON_ST4_d = NEONLoadStoreSingleStructStore4 | NEONLoadStoreSingle_d +}; + +// NEON load/store single structure with post-index addressing. +enum NEONLoadStoreSingleStructPostIndexOp { + NEONLoadStoreSingleStructPostIndexFixed = 0x0D800000, + NEONLoadStoreSingleStructPostIndexFMask = 0xBF800000, + NEONLoadStoreSingleStructPostIndexMask = 0xBFE0E000, + NEONLoadStoreSingleStructPostIndex = 0x00800000, + NEON_LD1_b_post = NEON_LD1_b | NEONLoadStoreSingleStructPostIndex, + NEON_LD1_h_post = NEON_LD1_h | NEONLoadStoreSingleStructPostIndex, + NEON_LD1_s_post = NEON_LD1_s | NEONLoadStoreSingleStructPostIndex, + NEON_LD1_d_post = NEON_LD1_d | NEONLoadStoreSingleStructPostIndex, + NEON_LD1R_post = NEON_LD1R | NEONLoadStoreSingleStructPostIndex, + NEON_ST1_b_post = NEON_ST1_b | NEONLoadStoreSingleStructPostIndex, + NEON_ST1_h_post = NEON_ST1_h | NEONLoadStoreSingleStructPostIndex, + NEON_ST1_s_post = NEON_ST1_s | NEONLoadStoreSingleStructPostIndex, + NEON_ST1_d_post = NEON_ST1_d | NEONLoadStoreSingleStructPostIndex, + + NEON_LD2_b_post = NEON_LD2_b | NEONLoadStoreSingleStructPostIndex, + NEON_LD2_h_post = NEON_LD2_h | NEONLoadStoreSingleStructPostIndex, + NEON_LD2_s_post = NEON_LD2_s | NEONLoadStoreSingleStructPostIndex, + NEON_LD2_d_post = NEON_LD2_d | NEONLoadStoreSingleStructPostIndex, + NEON_LD2R_post = NEON_LD2R | NEONLoadStoreSingleStructPostIndex, + NEON_ST2_b_post = NEON_ST2_b | NEONLoadStoreSingleStructPostIndex, + NEON_ST2_h_post = NEON_ST2_h | NEONLoadStoreSingleStructPostIndex, + NEON_ST2_s_post = NEON_ST2_s | NEONLoadStoreSingleStructPostIndex, + NEON_ST2_d_post = NEON_ST2_d | NEONLoadStoreSingleStructPostIndex, + + NEON_LD3_b_post = NEON_LD3_b | NEONLoadStoreSingleStructPostIndex, + NEON_LD3_h_post = NEON_LD3_h | NEONLoadStoreSingleStructPostIndex, + NEON_LD3_s_post = NEON_LD3_s | NEONLoadStoreSingleStructPostIndex, + NEON_LD3_d_post = NEON_LD3_d | NEONLoadStoreSingleStructPostIndex, + NEON_LD3R_post = NEON_LD3R | NEONLoadStoreSingleStructPostIndex, + NEON_ST3_b_post = NEON_ST3_b | NEONLoadStoreSingleStructPostIndex, + NEON_ST3_h_post = NEON_ST3_h | NEONLoadStoreSingleStructPostIndex, + NEON_ST3_s_post = NEON_ST3_s | NEONLoadStoreSingleStructPostIndex, + NEON_ST3_d_post = NEON_ST3_d | NEONLoadStoreSingleStructPostIndex, + + NEON_LD4_b_post = NEON_LD4_b | NEONLoadStoreSingleStructPostIndex, + NEON_LD4_h_post = NEON_LD4_h | NEONLoadStoreSingleStructPostIndex, + NEON_LD4_s_post = NEON_LD4_s | NEONLoadStoreSingleStructPostIndex, + NEON_LD4_d_post = NEON_LD4_d | NEONLoadStoreSingleStructPostIndex, + NEON_LD4R_post = NEON_LD4R | NEONLoadStoreSingleStructPostIndex, + NEON_ST4_b_post = NEON_ST4_b | NEONLoadStoreSingleStructPostIndex, + NEON_ST4_h_post = NEON_ST4_h | NEONLoadStoreSingleStructPostIndex, + NEON_ST4_s_post = NEON_ST4_s | NEONLoadStoreSingleStructPostIndex, + NEON_ST4_d_post = NEON_ST4_d | NEONLoadStoreSingleStructPostIndex +}; + +// NEON modified immediate. +enum NEONModifiedImmediateOp { + NEONModifiedImmediateFixed = 0x0F000400, + NEONModifiedImmediateFMask = 0x9FF80400, + NEONModifiedImmediateOpBit = 0x20000000, + NEONModifiedImmediate_MOVI = NEONModifiedImmediateFixed | 0x00000000, + NEONModifiedImmediate_MVNI = NEONModifiedImmediateFixed | 0x20000000, + NEONModifiedImmediate_ORR = NEONModifiedImmediateFixed | 0x00001000, + NEONModifiedImmediate_BIC = NEONModifiedImmediateFixed | 0x20001000 +}; + +// NEON shift immediate. +enum NEONShiftImmediateOp { + NEONShiftImmediateFixed = 0x0F000400, + NEONShiftImmediateFMask = 0x9F800400, + NEONShiftImmediateMask = 0xBF80FC00, + NEONShiftImmediateUBit = 0x20000000, + NEON_SHL = NEONShiftImmediateFixed | 0x00005000, + NEON_SSHLL = NEONShiftImmediateFixed | 0x0000A000, + NEON_USHLL = NEONShiftImmediateFixed | 0x2000A000, + NEON_SLI = NEONShiftImmediateFixed | 0x20005000, + NEON_SRI = NEONShiftImmediateFixed | 0x20004000, + NEON_SHRN = NEONShiftImmediateFixed | 0x00008000, + NEON_RSHRN = NEONShiftImmediateFixed | 0x00008800, + NEON_UQSHRN = NEONShiftImmediateFixed | 0x20009000, + NEON_UQRSHRN = NEONShiftImmediateFixed | 0x20009800, + NEON_SQSHRN = NEONShiftImmediateFixed | 0x00009000, + NEON_SQRSHRN = NEONShiftImmediateFixed | 0x00009800, + NEON_SQSHRUN = NEONShiftImmediateFixed | 0x20008000, + NEON_SQRSHRUN = NEONShiftImmediateFixed | 0x20008800, + NEON_SSHR = NEONShiftImmediateFixed | 0x00000000, + NEON_SRSHR = NEONShiftImmediateFixed | 0x00002000, + NEON_USHR = NEONShiftImmediateFixed | 0x20000000, + NEON_URSHR = NEONShiftImmediateFixed | 0x20002000, + NEON_SSRA = NEONShiftImmediateFixed | 0x00001000, + NEON_SRSRA = NEONShiftImmediateFixed | 0x00003000, + NEON_USRA = NEONShiftImmediateFixed | 0x20001000, + NEON_URSRA = NEONShiftImmediateFixed | 0x20003000, + NEON_SQSHLU = NEONShiftImmediateFixed | 0x20006000, + NEON_SCVTF_imm = NEONShiftImmediateFixed | 0x0000E000, + NEON_UCVTF_imm = NEONShiftImmediateFixed | 0x2000E000, + NEON_FCVTZS_imm = NEONShiftImmediateFixed | 0x0000F800, + NEON_FCVTZU_imm = NEONShiftImmediateFixed | 0x2000F800, + NEON_SQSHL_imm = NEONShiftImmediateFixed | 0x00007000, + NEON_UQSHL_imm = NEONShiftImmediateFixed | 0x20007000 +}; + +// NEON table. +enum NEONTableOp { + NEONTableFixed = 0x0E000000, + NEONTableFMask = 0xBF208C00, + NEONTableExt = 0x00001000, + NEONTableMask = 0xBF20FC00, + NEON_TBL_1v = NEONTableFixed | 0x00000000, + NEON_TBL_2v = NEONTableFixed | 0x00002000, + NEON_TBL_3v = NEONTableFixed | 0x00004000, + NEON_TBL_4v = NEONTableFixed | 0x00006000, + NEON_TBX_1v = NEON_TBL_1v | NEONTableExt, + NEON_TBX_2v = NEON_TBL_2v | NEONTableExt, + NEON_TBX_3v = NEON_TBL_3v | NEONTableExt, + NEON_TBX_4v = NEON_TBL_4v | NEONTableExt +}; + +// NEON perm. +enum NEONPermOp { + NEONPermFixed = 0x0E000800, + NEONPermFMask = 0xBF208C00, + NEONPermMask = 0x3F20FC00, + NEON_UZP1 = NEONPermFixed | 0x00001000, + NEON_TRN1 = NEONPermFixed | 0x00002000, + NEON_ZIP1 = NEONPermFixed | 0x00003000, + NEON_UZP2 = NEONPermFixed | 0x00005000, + NEON_TRN2 = NEONPermFixed | 0x00006000, + NEON_ZIP2 = NEONPermFixed | 0x00007000 +}; + +// NEON scalar instructions with two register operands. +enum NEONScalar2RegMiscOp { + NEONScalar2RegMiscFixed = 0x5E200800, + NEONScalar2RegMiscFMask = 0xDF3E0C00, + NEONScalar2RegMiscMask = NEON_Q | NEONScalar | NEON2RegMiscMask, + NEON_CMGT_zero_scalar = NEON_Q | NEONScalar | NEON_CMGT_zero, + NEON_CMEQ_zero_scalar = NEON_Q | NEONScalar | NEON_CMEQ_zero, + NEON_CMLT_zero_scalar = NEON_Q | NEONScalar | NEON_CMLT_zero, + NEON_CMGE_zero_scalar = NEON_Q | NEONScalar | NEON_CMGE_zero, + NEON_CMLE_zero_scalar = NEON_Q | NEONScalar | NEON_CMLE_zero, + NEON_ABS_scalar = NEON_Q | NEONScalar | NEON_ABS, + NEON_SQABS_scalar = NEON_Q | NEONScalar | NEON_SQABS, + NEON_NEG_scalar = NEON_Q | NEONScalar | NEON_NEG, + NEON_SQNEG_scalar = NEON_Q | NEONScalar | NEON_SQNEG, + NEON_SQXTN_scalar = NEON_Q | NEONScalar | NEON_SQXTN, + NEON_UQXTN_scalar = NEON_Q | NEONScalar | NEON_UQXTN, + NEON_SQXTUN_scalar = NEON_Q | NEONScalar | NEON_SQXTUN, + NEON_SUQADD_scalar = NEON_Q | NEONScalar | NEON_SUQADD, + NEON_USQADD_scalar = NEON_Q | NEONScalar | NEON_USQADD, + + NEONScalar2RegMiscOpcode = NEON2RegMiscOpcode, + NEON_NEG_scalar_opcode = NEON_NEG_scalar & NEONScalar2RegMiscOpcode, + + NEONScalar2RegMiscFPMask = NEONScalar2RegMiscMask | 0x00800000, + NEON_FRSQRTE_scalar = NEON_Q | NEONScalar | NEON_FRSQRTE, + NEON_FRECPE_scalar = NEON_Q | NEONScalar | NEON_FRECPE, + NEON_SCVTF_scalar = NEON_Q | NEONScalar | NEON_SCVTF, + NEON_UCVTF_scalar = NEON_Q | NEONScalar | NEON_UCVTF, + NEON_FCMGT_zero_scalar = NEON_Q | NEONScalar | NEON_FCMGT_zero, + NEON_FCMEQ_zero_scalar = NEON_Q | NEONScalar | NEON_FCMEQ_zero, + NEON_FCMLT_zero_scalar = NEON_Q | NEONScalar | NEON_FCMLT_zero, + NEON_FCMGE_zero_scalar = NEON_Q | NEONScalar | NEON_FCMGE_zero, + NEON_FCMLE_zero_scalar = NEON_Q | NEONScalar | NEON_FCMLE_zero, + NEON_FRECPX_scalar = NEONScalar2RegMiscFixed | 0x0081F000, + NEON_FCVTNS_scalar = NEON_Q | NEONScalar | NEON_FCVTNS, + NEON_FCVTNU_scalar = NEON_Q | NEONScalar | NEON_FCVTNU, + NEON_FCVTPS_scalar = NEON_Q | NEONScalar | NEON_FCVTPS, + NEON_FCVTPU_scalar = NEON_Q | NEONScalar | NEON_FCVTPU, + NEON_FCVTMS_scalar = NEON_Q | NEONScalar | NEON_FCVTMS, + NEON_FCVTMU_scalar = NEON_Q | NEONScalar | NEON_FCVTMU, + NEON_FCVTZS_scalar = NEON_Q | NEONScalar | NEON_FCVTZS, + NEON_FCVTZU_scalar = NEON_Q | NEONScalar | NEON_FCVTZU, + NEON_FCVTAS_scalar = NEON_Q | NEONScalar | NEON_FCVTAS, + NEON_FCVTAU_scalar = NEON_Q | NEONScalar | NEON_FCVTAU, + NEON_FCVTXN_scalar = NEON_Q | NEONScalar | NEON_FCVTXN +}; + +// NEON scalar instructions with three same-type operands. +enum NEONScalar3SameOp { + NEONScalar3SameFixed = 0x5E200400, + NEONScalar3SameFMask = 0xDF200400, + NEONScalar3SameMask = 0xFF20FC00, + NEON_ADD_scalar = NEON_Q | NEONScalar | NEON_ADD, + NEON_CMEQ_scalar = NEON_Q | NEONScalar | NEON_CMEQ, + NEON_CMGE_scalar = NEON_Q | NEONScalar | NEON_CMGE, + NEON_CMGT_scalar = NEON_Q | NEONScalar | NEON_CMGT, + NEON_CMHI_scalar = NEON_Q | NEONScalar | NEON_CMHI, + NEON_CMHS_scalar = NEON_Q | NEONScalar | NEON_CMHS, + NEON_CMTST_scalar = NEON_Q | NEONScalar | NEON_CMTST, + NEON_SUB_scalar = NEON_Q | NEONScalar | NEON_SUB, + NEON_UQADD_scalar = NEON_Q | NEONScalar | NEON_UQADD, + NEON_SQADD_scalar = NEON_Q | NEONScalar | NEON_SQADD, + NEON_UQSUB_scalar = NEON_Q | NEONScalar | NEON_UQSUB, + NEON_SQSUB_scalar = NEON_Q | NEONScalar | NEON_SQSUB, + NEON_USHL_scalar = NEON_Q | NEONScalar | NEON_USHL, + NEON_SSHL_scalar = NEON_Q | NEONScalar | NEON_SSHL, + NEON_UQSHL_scalar = NEON_Q | NEONScalar | NEON_UQSHL, + NEON_SQSHL_scalar = NEON_Q | NEONScalar | NEON_SQSHL, + NEON_URSHL_scalar = NEON_Q | NEONScalar | NEON_URSHL, + NEON_SRSHL_scalar = NEON_Q | NEONScalar | NEON_SRSHL, + NEON_UQRSHL_scalar = NEON_Q | NEONScalar | NEON_UQRSHL, + NEON_SQRSHL_scalar = NEON_Q | NEONScalar | NEON_SQRSHL, + NEON_SQDMULH_scalar = NEON_Q | NEONScalar | NEON_SQDMULH, + NEON_SQRDMULH_scalar = NEON_Q | NEONScalar | NEON_SQRDMULH, + + // NEON floating point scalar instructions with three same-type operands. + NEONScalar3SameFPFixed = NEONScalar3SameFixed | 0x0000C000, + NEONScalar3SameFPFMask = NEONScalar3SameFMask | 0x0000C000, + NEONScalar3SameFPMask = NEONScalar3SameMask | 0x00800000, + NEON_FACGE_scalar = NEON_Q | NEONScalar | NEON_FACGE, + NEON_FACGT_scalar = NEON_Q | NEONScalar | NEON_FACGT, + NEON_FCMEQ_scalar = NEON_Q | NEONScalar | NEON_FCMEQ, + NEON_FCMGE_scalar = NEON_Q | NEONScalar | NEON_FCMGE, + NEON_FCMGT_scalar = NEON_Q | NEONScalar | NEON_FCMGT, + NEON_FMULX_scalar = NEON_Q | NEONScalar | NEON_FMULX, + NEON_FRECPS_scalar = NEON_Q | NEONScalar | NEON_FRECPS, + NEON_FRSQRTS_scalar = NEON_Q | NEONScalar | NEON_FRSQRTS, + NEON_FABD_scalar = NEON_Q | NEONScalar | NEON_FABD +}; + +// NEON scalar instructions with three different-type operands. +enum NEONScalar3DiffOp { + NEONScalar3DiffFixed = 0x5E200000, + NEONScalar3DiffFMask = 0xDF200C00, + NEONScalar3DiffMask = NEON_Q | NEONScalar | NEON3DifferentMask, + NEON_SQDMLAL_scalar = NEON_Q | NEONScalar | NEON_SQDMLAL, + NEON_SQDMLSL_scalar = NEON_Q | NEONScalar | NEON_SQDMLSL, + NEON_SQDMULL_scalar = NEON_Q | NEONScalar | NEON_SQDMULL +}; + +// NEON scalar instructions with indexed element operand. +enum NEONScalarByIndexedElementOp { + NEONScalarByIndexedElementFixed = 0x5F000000, + NEONScalarByIndexedElementFMask = 0xDF000400, + NEONScalarByIndexedElementMask = 0xFF00F400, + NEON_SQDMLAL_byelement_scalar = NEON_Q | NEONScalar | NEON_SQDMLAL_byelement, + NEON_SQDMLSL_byelement_scalar = NEON_Q | NEONScalar | NEON_SQDMLSL_byelement, + NEON_SQDMULL_byelement_scalar = NEON_Q | NEONScalar | NEON_SQDMULL_byelement, + NEON_SQDMULH_byelement_scalar = NEON_Q | NEONScalar | NEON_SQDMULH_byelement, + NEON_SQRDMULH_byelement_scalar + = NEON_Q | NEONScalar | NEON_SQRDMULH_byelement, + + // Floating point instructions. + NEONScalarByIndexedElementFPFixed + = NEONScalarByIndexedElementFixed | 0x00800000, + NEONScalarByIndexedElementFPMask + = NEONScalarByIndexedElementMask | 0x00800000, + NEON_FMLA_byelement_scalar = NEON_Q | NEONScalar | NEON_FMLA_byelement, + NEON_FMLS_byelement_scalar = NEON_Q | NEONScalar | NEON_FMLS_byelement, + NEON_FMUL_byelement_scalar = NEON_Q | NEONScalar | NEON_FMUL_byelement, + NEON_FMULX_byelement_scalar = NEON_Q | NEONScalar | NEON_FMULX_byelement +}; + +// NEON scalar register copy. +enum NEONScalarCopyOp { + NEONScalarCopyFixed = 0x5E000400, + NEONScalarCopyFMask = 0xDFE08400, + NEONScalarCopyMask = 0xFFE0FC00, + NEON_DUP_ELEMENT_scalar = NEON_Q | NEONScalar | NEON_DUP_ELEMENT +}; + +// NEON scalar pairwise instructions. +enum NEONScalarPairwiseOp { + NEONScalarPairwiseFixed = 0x5E300800, + NEONScalarPairwiseFMask = 0xDF3E0C00, + NEONScalarPairwiseMask = 0xFFB1F800, + NEON_ADDP_scalar = NEONScalarPairwiseFixed | 0x0081B000, + NEON_FMAXNMP_scalar = NEONScalarPairwiseFixed | 0x2000C000, + NEON_FMINNMP_scalar = NEONScalarPairwiseFixed | 0x2080C000, + NEON_FADDP_scalar = NEONScalarPairwiseFixed | 0x2000D000, + NEON_FMAXP_scalar = NEONScalarPairwiseFixed | 0x2000F000, + NEON_FMINP_scalar = NEONScalarPairwiseFixed | 0x2080F000 +}; + +// NEON scalar shift immediate. +enum NEONScalarShiftImmediateOp { + NEONScalarShiftImmediateFixed = 0x5F000400, + NEONScalarShiftImmediateFMask = 0xDF800400, + NEONScalarShiftImmediateMask = 0xFF80FC00, + NEON_SHL_scalar = NEON_Q | NEONScalar | NEON_SHL, + NEON_SLI_scalar = NEON_Q | NEONScalar | NEON_SLI, + NEON_SRI_scalar = NEON_Q | NEONScalar | NEON_SRI, + NEON_SSHR_scalar = NEON_Q | NEONScalar | NEON_SSHR, + NEON_USHR_scalar = NEON_Q | NEONScalar | NEON_USHR, + NEON_SRSHR_scalar = NEON_Q | NEONScalar | NEON_SRSHR, + NEON_URSHR_scalar = NEON_Q | NEONScalar | NEON_URSHR, + NEON_SSRA_scalar = NEON_Q | NEONScalar | NEON_SSRA, + NEON_USRA_scalar = NEON_Q | NEONScalar | NEON_USRA, + NEON_SRSRA_scalar = NEON_Q | NEONScalar | NEON_SRSRA, + NEON_URSRA_scalar = NEON_Q | NEONScalar | NEON_URSRA, + NEON_UQSHRN_scalar = NEON_Q | NEONScalar | NEON_UQSHRN, + NEON_UQRSHRN_scalar = NEON_Q | NEONScalar | NEON_UQRSHRN, + NEON_SQSHRN_scalar = NEON_Q | NEONScalar | NEON_SQSHRN, + NEON_SQRSHRN_scalar = NEON_Q | NEONScalar | NEON_SQRSHRN, + NEON_SQSHRUN_scalar = NEON_Q | NEONScalar | NEON_SQSHRUN, + NEON_SQRSHRUN_scalar = NEON_Q | NEONScalar | NEON_SQRSHRUN, + NEON_SQSHLU_scalar = NEON_Q | NEONScalar | NEON_SQSHLU, + NEON_SQSHL_imm_scalar = NEON_Q | NEONScalar | NEON_SQSHL_imm, + NEON_UQSHL_imm_scalar = NEON_Q | NEONScalar | NEON_UQSHL_imm, + NEON_SCVTF_imm_scalar = NEON_Q | NEONScalar | NEON_SCVTF_imm, + NEON_UCVTF_imm_scalar = NEON_Q | NEONScalar | NEON_UCVTF_imm, + NEON_FCVTZS_imm_scalar = NEON_Q | NEONScalar | NEON_FCVTZS_imm, + NEON_FCVTZU_imm_scalar = NEON_Q | NEONScalar | NEON_FCVTZU_imm +}; + // Unimplemented and unallocated instructions. These are defined to make fixed // bit assertion easier. enum UnimplementedOp { diff --git a/qemu/disas/libvixl/a64/cpu-a64.h b/qemu/disas/libvixl/vixl/a64/cpu-a64.h index 59b7974a1..cdf09a6af 100644 --- a/qemu/disas/libvixl/a64/cpu-a64.h +++ b/qemu/disas/libvixl/vixl/a64/cpu-a64.h @@ -1,4 +1,4 @@ -// Copyright 2013, ARM Limited +// Copyright 2014, ARM Limited // All rights reserved. // // Redistribution and use in source and binary forms, with or without @@ -27,8 +27,8 @@ #ifndef VIXL_CPU_A64_H #define VIXL_CPU_A64_H -#include "globals.h" -#include "instructions-a64.h" +#include "vixl/globals.h" +#include "vixl/a64/instructions-a64.h" namespace vixl { diff --git a/qemu/disas/libvixl/a64/decoder-a64.cc b/qemu/disas/libvixl/vixl/a64/decoder-a64.cc index 82591ca30..5ba2d3ce0 100644 --- a/qemu/disas/libvixl/a64/decoder-a64.cc +++ b/qemu/disas/libvixl/vixl/a64/decoder-a64.cc @@ -1,4 +1,4 @@ -// Copyright 2013, ARM Limited +// Copyright 2014, ARM Limited // All rights reserved. // // Redistribution and use in source and binary forms, with or without @@ -24,9 +24,9 @@ // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -#include "globals.h" -#include "utils.h" -#include "a64/decoder-a64.h" +#include "vixl/globals.h" +#include "vixl/utils.h" +#include "vixl/a64/decoder-a64.h" namespace vixl { @@ -271,6 +271,11 @@ void Decoder::DecodeLoadStore(const Instruction* instr) { (instr->Bits(27, 24) == 0x9) || (instr->Bits(27, 24) == 0xC) || (instr->Bits(27, 24) == 0xD) ); + // TODO(all): rearrange the tree to integrate this branch. + if ((instr->Bit(28) == 0) && (instr->Bit(29) == 0) && (instr->Bit(26) == 1)) { + DecodeNEONLoadStore(instr); + return; + } if (instr->Bit(24) == 0) { if (instr->Bit(28) == 0) { @@ -278,7 +283,7 @@ void Decoder::DecodeLoadStore(const Instruction* instr) { if (instr->Bit(26) == 0) { VisitLoadStoreExclusive(instr); } else { - DecodeAdvSIMDLoadStore(instr); + VIXL_UNREACHABLE(); } } else { if ((instr->Bits(31, 30) == 0x3) || @@ -483,6 +488,7 @@ void Decoder::DecodeDataProcessing(const Instruction* instr) { case 6: { if (instr->Bit(29) == 0x1) { VisitUnallocated(instr); + VIXL_FALLTHROUGH(); } else { if (instr->Bit(30) == 0) { if ((instr->Bit(15) == 0x1) || @@ -556,18 +562,15 @@ void Decoder::DecodeDataProcessing(const Instruction* instr) { void Decoder::DecodeFP(const Instruction* instr) { VIXL_ASSERT((instr->Bits(27, 24) == 0xE) || (instr->Bits(27, 24) == 0xF)); - if (instr->Bit(28) == 0) { - DecodeAdvSIMDDataProcessing(instr); + DecodeNEONVectorDataProcessing(instr); } else { - if (instr->Bit(29) == 1) { + if (instr->Bits(31, 30) == 0x3) { VisitUnallocated(instr); + } else if (instr->Bits(31, 30) == 0x1) { + DecodeNEONScalarDataProcessing(instr); } else { - if (instr->Bits(31, 30) == 0x3) { - VisitUnallocated(instr); - } else if (instr->Bits(31, 30) == 0x1) { - DecodeAdvSIMDDataProcessing(instr); - } else { + if (instr->Bit(29) == 0) { if (instr->Bit(24) == 0) { if (instr->Bit(21) == 0) { if ((instr->Bit(23) == 1) || @@ -674,23 +677,190 @@ void Decoder::DecodeFP(const Instruction* instr) { VisitFPDataProcessing3Source(instr); } } + } else { + VisitUnallocated(instr); } } } } -void Decoder::DecodeAdvSIMDLoadStore(const Instruction* instr) { - // TODO: Implement Advanced SIMD load/store instruction decode. +void Decoder::DecodeNEONLoadStore(const Instruction* instr) { VIXL_ASSERT(instr->Bits(29, 25) == 0x6); - VisitUnimplemented(instr); + if (instr->Bit(31) == 0) { + if ((instr->Bit(24) == 0) && (instr->Bit(21) == 1)) { + VisitUnallocated(instr); + return; + } + + if (instr->Bit(23) == 0) { + if (instr->Bits(20, 16) == 0) { + if (instr->Bit(24) == 0) { + VisitNEONLoadStoreMultiStruct(instr); + } else { + VisitNEONLoadStoreSingleStruct(instr); + } + } else { + VisitUnallocated(instr); + } + } else { + if (instr->Bit(24) == 0) { + VisitNEONLoadStoreMultiStructPostIndex(instr); + } else { + VisitNEONLoadStoreSingleStructPostIndex(instr); + } + } + } else { + VisitUnallocated(instr); + } +} + + +void Decoder::DecodeNEONVectorDataProcessing(const Instruction* instr) { + VIXL_ASSERT(instr->Bits(28, 25) == 0x7); + if (instr->Bit(31) == 0) { + if (instr->Bit(24) == 0) { + if (instr->Bit(21) == 0) { + if (instr->Bit(15) == 0) { + if (instr->Bit(10) == 0) { + if (instr->Bit(29) == 0) { + if (instr->Bit(11) == 0) { + VisitNEONTable(instr); + } else { + VisitNEONPerm(instr); + } + } else { + VisitNEONExtract(instr); + } + } else { + if (instr->Bits(23, 22) == 0) { + VisitNEONCopy(instr); + } else { + VisitUnallocated(instr); + } + } + } else { + VisitUnallocated(instr); + } + } else { + if (instr->Bit(10) == 0) { + if (instr->Bit(11) == 0) { + VisitNEON3Different(instr); + } else { + if (instr->Bits(18, 17) == 0) { + if (instr->Bit(20) == 0) { + if (instr->Bit(19) == 0) { + VisitNEON2RegMisc(instr); + } else { + if (instr->Bits(30, 29) == 0x2) { + VisitCryptoAES(instr); + } else { + VisitUnallocated(instr); + } + } + } else { + if (instr->Bit(19) == 0) { + VisitNEONAcrossLanes(instr); + } else { + VisitUnallocated(instr); + } + } + } else { + VisitUnallocated(instr); + } + } + } else { + VisitNEON3Same(instr); + } + } + } else { + if (instr->Bit(10) == 0) { + VisitNEONByIndexedElement(instr); + } else { + if (instr->Bit(23) == 0) { + if (instr->Bits(22, 19) == 0) { + VisitNEONModifiedImmediate(instr); + } else { + VisitNEONShiftImmediate(instr); + } + } else { + VisitUnallocated(instr); + } + } + } + } else { + VisitUnallocated(instr); + } } -void Decoder::DecodeAdvSIMDDataProcessing(const Instruction* instr) { - // TODO: Implement Advanced SIMD data processing instruction decode. - VIXL_ASSERT(instr->Bits(27, 25) == 0x7); - VisitUnimplemented(instr); +void Decoder::DecodeNEONScalarDataProcessing(const Instruction* instr) { + VIXL_ASSERT(instr->Bits(28, 25) == 0xF); + if (instr->Bit(24) == 0) { + if (instr->Bit(21) == 0) { + if (instr->Bit(15) == 0) { + if (instr->Bit(10) == 0) { + if (instr->Bit(29) == 0) { + if (instr->Bit(11) == 0) { + VisitCrypto3RegSHA(instr); + } else { + VisitUnallocated(instr); + } + } else { + VisitUnallocated(instr); + } + } else { + if (instr->Bits(23, 22) == 0) { + VisitNEONScalarCopy(instr); + } else { + VisitUnallocated(instr); + } + } + } else { + VisitUnallocated(instr); + } + } else { + if (instr->Bit(10) == 0) { + if (instr->Bit(11) == 0) { + VisitNEONScalar3Diff(instr); + } else { + if (instr->Bits(18, 17) == 0) { + if (instr->Bit(20) == 0) { + if (instr->Bit(19) == 0) { + VisitNEONScalar2RegMisc(instr); + } else { + if (instr->Bit(29) == 0) { + VisitCrypto2RegSHA(instr); + } else { + VisitUnallocated(instr); + } + } + } else { + if (instr->Bit(19) == 0) { + VisitNEONScalarPairwise(instr); + } else { + VisitUnallocated(instr); + } + } + } else { + VisitUnallocated(instr); + } + } + } else { + VisitNEONScalar3Same(instr); + } + } + } else { + if (instr->Bit(10) == 0) { + VisitNEONScalarByIndexedElement(instr); + } else { + if (instr->Bit(23) == 0) { + VisitNEONScalarShiftImmediate(instr); + } else { + VisitUnallocated(instr); + } + } + } } diff --git a/qemu/disas/libvixl/a64/decoder-a64.h b/qemu/disas/libvixl/vixl/a64/decoder-a64.h index fd08d6c1f..b3f04f68f 100644 --- a/qemu/disas/libvixl/a64/decoder-a64.h +++ b/qemu/disas/libvixl/vixl/a64/decoder-a64.h @@ -1,4 +1,4 @@ -// Copyright 2013, ARM Limited +// Copyright 2014, ARM Limited // All rights reserved. // // Redistribution and use in source and binary forms, with or without @@ -29,13 +29,13 @@ #include <list> -#include "globals.h" -#include "a64/instructions-a64.h" +#include "vixl/globals.h" +#include "vixl/a64/instructions-a64.h" // List macro containing all visitors needed by the decoder class. -#define VISITOR_LIST(V) \ +#define VISITOR_LIST_THAT_RETURN(V) \ V(PCRelAddressing) \ V(AddSubImmediate) \ V(LogicalImmediate) \ @@ -79,8 +79,39 @@ V(FPDataProcessing3Source) \ V(FPIntegerConvert) \ V(FPFixedPointConvert) \ - V(Unallocated) \ - V(Unimplemented) + V(Crypto2RegSHA) \ + V(Crypto3RegSHA) \ + V(CryptoAES) \ + V(NEON2RegMisc) \ + V(NEON3Different) \ + V(NEON3Same) \ + V(NEONAcrossLanes) \ + V(NEONByIndexedElement) \ + V(NEONCopy) \ + V(NEONExtract) \ + V(NEONLoadStoreMultiStruct) \ + V(NEONLoadStoreMultiStructPostIndex) \ + V(NEONLoadStoreSingleStruct) \ + V(NEONLoadStoreSingleStructPostIndex) \ + V(NEONModifiedImmediate) \ + V(NEONScalar2RegMisc) \ + V(NEONScalar3Diff) \ + V(NEONScalar3Same) \ + V(NEONScalarByIndexedElement) \ + V(NEONScalarCopy) \ + V(NEONScalarPairwise) \ + V(NEONScalarShiftImmediate) \ + V(NEONShiftImmediate) \ + V(NEONTable) \ + V(NEONPerm) \ + +#define VISITOR_LIST_THAT_DONT_RETURN(V) \ + V(Unallocated) \ + V(Unimplemented) \ + +#define VISITOR_LIST(V) \ + VISITOR_LIST_THAT_RETURN(V) \ + VISITOR_LIST_THAT_DONT_RETURN(V) \ namespace vixl { @@ -222,12 +253,17 @@ class Decoder { // Decode the Advanced SIMD (NEON) load/store part of the instruction tree, // and call the corresponding visitors. // On entry, instruction bits 29:25 = 0x6. - void DecodeAdvSIMDLoadStore(const Instruction* instr); + void DecodeNEONLoadStore(const Instruction* instr); - // Decode the Advanced SIMD (NEON) data processing part of the instruction - // tree, and call the corresponding visitors. - // On entry, instruction bits 27:25 = 0x7. - void DecodeAdvSIMDDataProcessing(const Instruction* instr); + // Decode the Advanced SIMD (NEON) vector data processing part of the + // instruction tree, and call the corresponding visitors. + // On entry, instruction bits 28:25 = 0x7. + void DecodeNEONVectorDataProcessing(const Instruction* instr); + + // Decode the Advanced SIMD (NEON) scalar data processing part of the + // instruction tree, and call the corresponding visitors. + // On entry, instruction bits 28:25 = 0xF. + void DecodeNEONScalarDataProcessing(const Instruction* instr); private: // Visitors are registered in a list. diff --git a/qemu/disas/libvixl/vixl/a64/disasm-a64.cc b/qemu/disas/libvixl/vixl/a64/disasm-a64.cc new file mode 100644 index 000000000..7a58a5c08 --- /dev/null +++ b/qemu/disas/libvixl/vixl/a64/disasm-a64.cc @@ -0,0 +1,3491 @@ +// Copyright 2015, ARM Limited +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// +// * Redistributions of source code must retain the above copyright notice, +// this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above copyright notice, +// this list of conditions and the following disclaimer in the documentation +// and/or other materials provided with the distribution. +// * Neither the name of ARM Limited nor the names of its contributors may be +// used to endorse or promote products derived from this software without +// specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND +// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE +// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, +// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +#include <cstdlib> +#include "vixl/a64/disasm-a64.h" + +namespace vixl { + +Disassembler::Disassembler() { + buffer_size_ = 256; + buffer_ = reinterpret_cast<char*>(malloc(buffer_size_)); + buffer_pos_ = 0; + own_buffer_ = true; + code_address_offset_ = 0; +} + + +Disassembler::Disassembler(char* text_buffer, int buffer_size) { + buffer_size_ = buffer_size; + buffer_ = text_buffer; + buffer_pos_ = 0; + own_buffer_ = false; + code_address_offset_ = 0; +} + + +Disassembler::~Disassembler() { + if (own_buffer_) { + free(buffer_); + } +} + + +char* Disassembler::GetOutput() { + return buffer_; +} + + +void Disassembler::VisitAddSubImmediate(const Instruction* instr) { + bool rd_is_zr = RdIsZROrSP(instr); + bool stack_op = (rd_is_zr || RnIsZROrSP(instr)) && + (instr->ImmAddSub() == 0) ? true : false; + const char *mnemonic = ""; + const char *form = "'Rds, 'Rns, 'IAddSub"; + const char *form_cmp = "'Rns, 'IAddSub"; + const char *form_mov = "'Rds, 'Rns"; + + switch (instr->Mask(AddSubImmediateMask)) { + case ADD_w_imm: + case ADD_x_imm: { + mnemonic = "add"; + if (stack_op) { + mnemonic = "mov"; + form = form_mov; + } + break; + } + case ADDS_w_imm: + case ADDS_x_imm: { + mnemonic = "adds"; + if (rd_is_zr) { + mnemonic = "cmn"; + form = form_cmp; + } + break; + } + case SUB_w_imm: + case SUB_x_imm: mnemonic = "sub"; break; + case SUBS_w_imm: + case SUBS_x_imm: { + mnemonic = "subs"; + if (rd_is_zr) { + mnemonic = "cmp"; + form = form_cmp; + } + break; + } + default: VIXL_UNREACHABLE(); + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitAddSubShifted(const Instruction* instr) { + bool rd_is_zr = RdIsZROrSP(instr); + bool rn_is_zr = RnIsZROrSP(instr); + const char *mnemonic = ""; + const char *form = "'Rd, 'Rn, 'Rm'NDP"; + const char *form_cmp = "'Rn, 'Rm'NDP"; + const char *form_neg = "'Rd, 'Rm'NDP"; + + switch (instr->Mask(AddSubShiftedMask)) { + case ADD_w_shift: + case ADD_x_shift: mnemonic = "add"; break; + case ADDS_w_shift: + case ADDS_x_shift: { + mnemonic = "adds"; + if (rd_is_zr) { + mnemonic = "cmn"; + form = form_cmp; + } + break; + } + case SUB_w_shift: + case SUB_x_shift: { + mnemonic = "sub"; + if (rn_is_zr) { + mnemonic = "neg"; + form = form_neg; + } + break; + } + case SUBS_w_shift: + case SUBS_x_shift: { + mnemonic = "subs"; + if (rd_is_zr) { + mnemonic = "cmp"; + form = form_cmp; + } else if (rn_is_zr) { + mnemonic = "negs"; + form = form_neg; + } + break; + } + default: VIXL_UNREACHABLE(); + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitAddSubExtended(const Instruction* instr) { + bool rd_is_zr = RdIsZROrSP(instr); + const char *mnemonic = ""; + Extend mode = static_cast<Extend>(instr->ExtendMode()); + const char *form = ((mode == UXTX) || (mode == SXTX)) ? + "'Rds, 'Rns, 'Xm'Ext" : "'Rds, 'Rns, 'Wm'Ext"; + const char *form_cmp = ((mode == UXTX) || (mode == SXTX)) ? + "'Rns, 'Xm'Ext" : "'Rns, 'Wm'Ext"; + + switch (instr->Mask(AddSubExtendedMask)) { + case ADD_w_ext: + case ADD_x_ext: mnemonic = "add"; break; + case ADDS_w_ext: + case ADDS_x_ext: { + mnemonic = "adds"; + if (rd_is_zr) { + mnemonic = "cmn"; + form = form_cmp; + } + break; + } + case SUB_w_ext: + case SUB_x_ext: mnemonic = "sub"; break; + case SUBS_w_ext: + case SUBS_x_ext: { + mnemonic = "subs"; + if (rd_is_zr) { + mnemonic = "cmp"; + form = form_cmp; + } + break; + } + default: VIXL_UNREACHABLE(); + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitAddSubWithCarry(const Instruction* instr) { + bool rn_is_zr = RnIsZROrSP(instr); + const char *mnemonic = ""; + const char *form = "'Rd, 'Rn, 'Rm"; + const char *form_neg = "'Rd, 'Rm"; + + switch (instr->Mask(AddSubWithCarryMask)) { + case ADC_w: + case ADC_x: mnemonic = "adc"; break; + case ADCS_w: + case ADCS_x: mnemonic = "adcs"; break; + case SBC_w: + case SBC_x: { + mnemonic = "sbc"; + if (rn_is_zr) { + mnemonic = "ngc"; + form = form_neg; + } + break; + } + case SBCS_w: + case SBCS_x: { + mnemonic = "sbcs"; + if (rn_is_zr) { + mnemonic = "ngcs"; + form = form_neg; + } + break; + } + default: VIXL_UNREACHABLE(); + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitLogicalImmediate(const Instruction* instr) { + bool rd_is_zr = RdIsZROrSP(instr); + bool rn_is_zr = RnIsZROrSP(instr); + const char *mnemonic = ""; + const char *form = "'Rds, 'Rn, 'ITri"; + + if (instr->ImmLogical() == 0) { + // The immediate encoded in the instruction is not in the expected format. + Format(instr, "unallocated", "(LogicalImmediate)"); + return; + } + + switch (instr->Mask(LogicalImmediateMask)) { + case AND_w_imm: + case AND_x_imm: mnemonic = "and"; break; + case ORR_w_imm: + case ORR_x_imm: { + mnemonic = "orr"; + unsigned reg_size = (instr->SixtyFourBits() == 1) ? kXRegSize + : kWRegSize; + if (rn_is_zr && !IsMovzMovnImm(reg_size, instr->ImmLogical())) { + mnemonic = "mov"; + form = "'Rds, 'ITri"; + } + break; + } + case EOR_w_imm: + case EOR_x_imm: mnemonic = "eor"; break; + case ANDS_w_imm: + case ANDS_x_imm: { + mnemonic = "ands"; + if (rd_is_zr) { + mnemonic = "tst"; + form = "'Rn, 'ITri"; + } + break; + } + default: VIXL_UNREACHABLE(); + } + Format(instr, mnemonic, form); +} + + +bool Disassembler::IsMovzMovnImm(unsigned reg_size, uint64_t value) { + VIXL_ASSERT((reg_size == kXRegSize) || + ((reg_size == kWRegSize) && (value <= 0xffffffff))); + + // Test for movz: 16 bits set at positions 0, 16, 32 or 48. + if (((value & UINT64_C(0xffffffffffff0000)) == 0) || + ((value & UINT64_C(0xffffffff0000ffff)) == 0) || + ((value & UINT64_C(0xffff0000ffffffff)) == 0) || + ((value & UINT64_C(0x0000ffffffffffff)) == 0)) { + return true; + } + + // Test for movn: NOT(16 bits set at positions 0, 16, 32 or 48). + if ((reg_size == kXRegSize) && + (((~value & UINT64_C(0xffffffffffff0000)) == 0) || + ((~value & UINT64_C(0xffffffff0000ffff)) == 0) || + ((~value & UINT64_C(0xffff0000ffffffff)) == 0) || + ((~value & UINT64_C(0x0000ffffffffffff)) == 0))) { + return true; + } + if ((reg_size == kWRegSize) && + (((value & 0xffff0000) == 0xffff0000) || + ((value & 0x0000ffff) == 0x0000ffff))) { + return true; + } + return false; +} + + +void Disassembler::VisitLogicalShifted(const Instruction* instr) { + bool rd_is_zr = RdIsZROrSP(instr); + bool rn_is_zr = RnIsZROrSP(instr); + const char *mnemonic = ""; + const char *form = "'Rd, 'Rn, 'Rm'NLo"; + + switch (instr->Mask(LogicalShiftedMask)) { + case AND_w: + case AND_x: mnemonic = "and"; break; + case BIC_w: + case BIC_x: mnemonic = "bic"; break; + case EOR_w: + case EOR_x: mnemonic = "eor"; break; + case EON_w: + case EON_x: mnemonic = "eon"; break; + case BICS_w: + case BICS_x: mnemonic = "bics"; break; + case ANDS_w: + case ANDS_x: { + mnemonic = "ands"; + if (rd_is_zr) { + mnemonic = "tst"; + form = "'Rn, 'Rm'NLo"; + } + break; + } + case ORR_w: + case ORR_x: { + mnemonic = "orr"; + if (rn_is_zr && (instr->ImmDPShift() == 0) && (instr->ShiftDP() == LSL)) { + mnemonic = "mov"; + form = "'Rd, 'Rm"; + } + break; + } + case ORN_w: + case ORN_x: { + mnemonic = "orn"; + if (rn_is_zr) { + mnemonic = "mvn"; + form = "'Rd, 'Rm'NLo"; + } + break; + } + default: VIXL_UNREACHABLE(); + } + + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitConditionalCompareRegister(const Instruction* instr) { + const char *mnemonic = ""; + const char *form = "'Rn, 'Rm, 'INzcv, 'Cond"; + + switch (instr->Mask(ConditionalCompareRegisterMask)) { + case CCMN_w: + case CCMN_x: mnemonic = "ccmn"; break; + case CCMP_w: + case CCMP_x: mnemonic = "ccmp"; break; + default: VIXL_UNREACHABLE(); + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitConditionalCompareImmediate(const Instruction* instr) { + const char *mnemonic = ""; + const char *form = "'Rn, 'IP, 'INzcv, 'Cond"; + + switch (instr->Mask(ConditionalCompareImmediateMask)) { + case CCMN_w_imm: + case CCMN_x_imm: mnemonic = "ccmn"; break; + case CCMP_w_imm: + case CCMP_x_imm: mnemonic = "ccmp"; break; + default: VIXL_UNREACHABLE(); + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitConditionalSelect(const Instruction* instr) { + bool rnm_is_zr = (RnIsZROrSP(instr) && RmIsZROrSP(instr)); + bool rn_is_rm = (instr->Rn() == instr->Rm()); + const char *mnemonic = ""; + const char *form = "'Rd, 'Rn, 'Rm, 'Cond"; + const char *form_test = "'Rd, 'CInv"; + const char *form_update = "'Rd, 'Rn, 'CInv"; + + Condition cond = static_cast<Condition>(instr->Condition()); + bool invertible_cond = (cond != al) && (cond != nv); + + switch (instr->Mask(ConditionalSelectMask)) { + case CSEL_w: + case CSEL_x: mnemonic = "csel"; break; + case CSINC_w: + case CSINC_x: { + mnemonic = "csinc"; + if (rnm_is_zr && invertible_cond) { + mnemonic = "cset"; + form = form_test; + } else if (rn_is_rm && invertible_cond) { + mnemonic = "cinc"; + form = form_update; + } + break; + } + case CSINV_w: + case CSINV_x: { + mnemonic = "csinv"; + if (rnm_is_zr && invertible_cond) { + mnemonic = "csetm"; + form = form_test; + } else if (rn_is_rm && invertible_cond) { + mnemonic = "cinv"; + form = form_update; + } + break; + } + case CSNEG_w: + case CSNEG_x: { + mnemonic = "csneg"; + if (rn_is_rm && invertible_cond) { + mnemonic = "cneg"; + form = form_update; + } + break; + } + default: VIXL_UNREACHABLE(); + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitBitfield(const Instruction* instr) { + unsigned s = instr->ImmS(); + unsigned r = instr->ImmR(); + unsigned rd_size_minus_1 = + ((instr->SixtyFourBits() == 1) ? kXRegSize : kWRegSize) - 1; + const char *mnemonic = ""; + const char *form = ""; + const char *form_shift_right = "'Rd, 'Rn, 'IBr"; + const char *form_extend = "'Rd, 'Wn"; + const char *form_bfiz = "'Rd, 'Rn, 'IBZ-r, 'IBs+1"; + const char *form_bfx = "'Rd, 'Rn, 'IBr, 'IBs-r+1"; + const char *form_lsl = "'Rd, 'Rn, 'IBZ-r"; + + switch (instr->Mask(BitfieldMask)) { + case SBFM_w: + case SBFM_x: { + mnemonic = "sbfx"; + form = form_bfx; + if (r == 0) { + form = form_extend; + if (s == 7) { + mnemonic = "sxtb"; + } else if (s == 15) { + mnemonic = "sxth"; + } else if ((s == 31) && (instr->SixtyFourBits() == 1)) { + mnemonic = "sxtw"; + } else { + form = form_bfx; + } + } else if (s == rd_size_minus_1) { + mnemonic = "asr"; + form = form_shift_right; + } else if (s < r) { + mnemonic = "sbfiz"; + form = form_bfiz; + } + break; + } + case UBFM_w: + case UBFM_x: { + mnemonic = "ubfx"; + form = form_bfx; + if (r == 0) { + form = form_extend; + if (s == 7) { + mnemonic = "uxtb"; + } else if (s == 15) { + mnemonic = "uxth"; + } else { + form = form_bfx; + } + } + if (s == rd_size_minus_1) { + mnemonic = "lsr"; + form = form_shift_right; + } else if (r == s + 1) { + mnemonic = "lsl"; + form = form_lsl; + } else if (s < r) { + mnemonic = "ubfiz"; + form = form_bfiz; + } + break; + } + case BFM_w: + case BFM_x: { + mnemonic = "bfxil"; + form = form_bfx; + if (s < r) { + mnemonic = "bfi"; + form = form_bfiz; + } + } + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitExtract(const Instruction* instr) { + const char *mnemonic = ""; + const char *form = "'Rd, 'Rn, 'Rm, 'IExtract"; + + switch (instr->Mask(ExtractMask)) { + case EXTR_w: + case EXTR_x: { + if (instr->Rn() == instr->Rm()) { + mnemonic = "ror"; + form = "'Rd, 'Rn, 'IExtract"; + } else { + mnemonic = "extr"; + } + break; + } + default: VIXL_UNREACHABLE(); + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitPCRelAddressing(const Instruction* instr) { + switch (instr->Mask(PCRelAddressingMask)) { + case ADR: Format(instr, "adr", "'Xd, 'AddrPCRelByte"); break; + case ADRP: Format(instr, "adrp", "'Xd, 'AddrPCRelPage"); break; + default: Format(instr, "unimplemented", "(PCRelAddressing)"); + } +} + + +void Disassembler::VisitConditionalBranch(const Instruction* instr) { + switch (instr->Mask(ConditionalBranchMask)) { + case B_cond: Format(instr, "b.'CBrn", "'TImmCond"); break; + default: VIXL_UNREACHABLE(); + } +} + + +void Disassembler::VisitUnconditionalBranchToRegister( + const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "'Xn"; + + switch (instr->Mask(UnconditionalBranchToRegisterMask)) { + case BR: mnemonic = "br"; break; + case BLR: mnemonic = "blr"; break; + case RET: { + mnemonic = "ret"; + if (instr->Rn() == kLinkRegCode) { + form = NULL; + } + break; + } + default: form = "(UnconditionalBranchToRegister)"; + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitUnconditionalBranch(const Instruction* instr) { + const char *mnemonic = ""; + const char *form = "'TImmUncn"; + + switch (instr->Mask(UnconditionalBranchMask)) { + case B: mnemonic = "b"; break; + case BL: mnemonic = "bl"; break; + default: VIXL_UNREACHABLE(); + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitDataProcessing1Source(const Instruction* instr) { + const char *mnemonic = ""; + const char *form = "'Rd, 'Rn"; + + switch (instr->Mask(DataProcessing1SourceMask)) { + #define FORMAT(A, B) \ + case A##_w: \ + case A##_x: mnemonic = B; break; + FORMAT(RBIT, "rbit"); + FORMAT(REV16, "rev16"); + FORMAT(REV, "rev"); + FORMAT(CLZ, "clz"); + FORMAT(CLS, "cls"); + #undef FORMAT + case REV32_x: mnemonic = "rev32"; break; + default: VIXL_UNREACHABLE(); + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitDataProcessing2Source(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "'Rd, 'Rn, 'Rm"; + const char *form_wwx = "'Wd, 'Wn, 'Xm"; + + switch (instr->Mask(DataProcessing2SourceMask)) { + #define FORMAT(A, B) \ + case A##_w: \ + case A##_x: mnemonic = B; break; + FORMAT(UDIV, "udiv"); + FORMAT(SDIV, "sdiv"); + FORMAT(LSLV, "lsl"); + FORMAT(LSRV, "lsr"); + FORMAT(ASRV, "asr"); + FORMAT(RORV, "ror"); + #undef FORMAT + case CRC32B: mnemonic = "crc32b"; break; + case CRC32H: mnemonic = "crc32h"; break; + case CRC32W: mnemonic = "crc32w"; break; + case CRC32X: mnemonic = "crc32x"; form = form_wwx; break; + case CRC32CB: mnemonic = "crc32cb"; break; + case CRC32CH: mnemonic = "crc32ch"; break; + case CRC32CW: mnemonic = "crc32cw"; break; + case CRC32CX: mnemonic = "crc32cx"; form = form_wwx; break; + default: form = "(DataProcessing2Source)"; + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitDataProcessing3Source(const Instruction* instr) { + bool ra_is_zr = RaIsZROrSP(instr); + const char *mnemonic = ""; + const char *form = "'Xd, 'Wn, 'Wm, 'Xa"; + const char *form_rrr = "'Rd, 'Rn, 'Rm"; + const char *form_rrrr = "'Rd, 'Rn, 'Rm, 'Ra"; + const char *form_xww = "'Xd, 'Wn, 'Wm"; + const char *form_xxx = "'Xd, 'Xn, 'Xm"; + + switch (instr->Mask(DataProcessing3SourceMask)) { + case MADD_w: + case MADD_x: { + mnemonic = "madd"; + form = form_rrrr; + if (ra_is_zr) { + mnemonic = "mul"; + form = form_rrr; + } + break; + } + case MSUB_w: + case MSUB_x: { + mnemonic = "msub"; + form = form_rrrr; + if (ra_is_zr) { + mnemonic = "mneg"; + form = form_rrr; + } + break; + } + case SMADDL_x: { + mnemonic = "smaddl"; + if (ra_is_zr) { + mnemonic = "smull"; + form = form_xww; + } + break; + } + case SMSUBL_x: { + mnemonic = "smsubl"; + if (ra_is_zr) { + mnemonic = "smnegl"; + form = form_xww; + } + break; + } + case UMADDL_x: { + mnemonic = "umaddl"; + if (ra_is_zr) { + mnemonic = "umull"; + form = form_xww; + } + break; + } + case UMSUBL_x: { + mnemonic = "umsubl"; + if (ra_is_zr) { + mnemonic = "umnegl"; + form = form_xww; + } + break; + } + case SMULH_x: { + mnemonic = "smulh"; + form = form_xxx; + break; + } + case UMULH_x: { + mnemonic = "umulh"; + form = form_xxx; + break; + } + default: VIXL_UNREACHABLE(); + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitCompareBranch(const Instruction* instr) { + const char *mnemonic = ""; + const char *form = "'Rt, 'TImmCmpa"; + + switch (instr->Mask(CompareBranchMask)) { + case CBZ_w: + case CBZ_x: mnemonic = "cbz"; break; + case CBNZ_w: + case CBNZ_x: mnemonic = "cbnz"; break; + default: VIXL_UNREACHABLE(); + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitTestBranch(const Instruction* instr) { + const char *mnemonic = ""; + // If the top bit of the immediate is clear, the tested register is + // disassembled as Wt, otherwise Xt. As the top bit of the immediate is + // encoded in bit 31 of the instruction, we can reuse the Rt form, which + // uses bit 31 (normally "sf") to choose the register size. + const char *form = "'Rt, 'IS, 'TImmTest"; + + switch (instr->Mask(TestBranchMask)) { + case TBZ: mnemonic = "tbz"; break; + case TBNZ: mnemonic = "tbnz"; break; + default: VIXL_UNREACHABLE(); + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitMoveWideImmediate(const Instruction* instr) { + const char *mnemonic = ""; + const char *form = "'Rd, 'IMoveImm"; + + // Print the shift separately for movk, to make it clear which half word will + // be overwritten. Movn and movz print the computed immediate, which includes + // shift calculation. + switch (instr->Mask(MoveWideImmediateMask)) { + case MOVN_w: + case MOVN_x: + if ((instr->ImmMoveWide()) || (instr->ShiftMoveWide() == 0)) { + if ((instr->SixtyFourBits() == 0) && (instr->ImmMoveWide() == 0xffff)) { + mnemonic = "movn"; + } else { + mnemonic = "mov"; + form = "'Rd, 'IMoveNeg"; + } + } else { + mnemonic = "movn"; + } + break; + case MOVZ_w: + case MOVZ_x: + if ((instr->ImmMoveWide()) || (instr->ShiftMoveWide() == 0)) + mnemonic = "mov"; + else + mnemonic = "movz"; + break; + case MOVK_w: + case MOVK_x: mnemonic = "movk"; form = "'Rd, 'IMoveLSL"; break; + default: VIXL_UNREACHABLE(); + } + Format(instr, mnemonic, form); +} + + +#define LOAD_STORE_LIST(V) \ + V(STRB_w, "strb", "'Wt") \ + V(STRH_w, "strh", "'Wt") \ + V(STR_w, "str", "'Wt") \ + V(STR_x, "str", "'Xt") \ + V(LDRB_w, "ldrb", "'Wt") \ + V(LDRH_w, "ldrh", "'Wt") \ + V(LDR_w, "ldr", "'Wt") \ + V(LDR_x, "ldr", "'Xt") \ + V(LDRSB_x, "ldrsb", "'Xt") \ + V(LDRSH_x, "ldrsh", "'Xt") \ + V(LDRSW_x, "ldrsw", "'Xt") \ + V(LDRSB_w, "ldrsb", "'Wt") \ + V(LDRSH_w, "ldrsh", "'Wt") \ + V(STR_b, "str", "'Bt") \ + V(STR_h, "str", "'Ht") \ + V(STR_s, "str", "'St") \ + V(STR_d, "str", "'Dt") \ + V(LDR_b, "ldr", "'Bt") \ + V(LDR_h, "ldr", "'Ht") \ + V(LDR_s, "ldr", "'St") \ + V(LDR_d, "ldr", "'Dt") \ + V(STR_q, "str", "'Qt") \ + V(LDR_q, "ldr", "'Qt") + +void Disassembler::VisitLoadStorePreIndex(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "(LoadStorePreIndex)"; + + switch (instr->Mask(LoadStorePreIndexMask)) { + #define LS_PREINDEX(A, B, C) \ + case A##_pre: mnemonic = B; form = C ", ['Xns'ILS]!"; break; + LOAD_STORE_LIST(LS_PREINDEX) + #undef LS_PREINDEX + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitLoadStorePostIndex(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "(LoadStorePostIndex)"; + + switch (instr->Mask(LoadStorePostIndexMask)) { + #define LS_POSTINDEX(A, B, C) \ + case A##_post: mnemonic = B; form = C ", ['Xns]'ILS"; break; + LOAD_STORE_LIST(LS_POSTINDEX) + #undef LS_POSTINDEX + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitLoadStoreUnsignedOffset(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "(LoadStoreUnsignedOffset)"; + + switch (instr->Mask(LoadStoreUnsignedOffsetMask)) { + #define LS_UNSIGNEDOFFSET(A, B, C) \ + case A##_unsigned: mnemonic = B; form = C ", ['Xns'ILU]"; break; + LOAD_STORE_LIST(LS_UNSIGNEDOFFSET) + #undef LS_UNSIGNEDOFFSET + case PRFM_unsigned: mnemonic = "prfm"; form = "'PrefOp, ['Xns'ILU]"; + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitLoadStoreRegisterOffset(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "(LoadStoreRegisterOffset)"; + + switch (instr->Mask(LoadStoreRegisterOffsetMask)) { + #define LS_REGISTEROFFSET(A, B, C) \ + case A##_reg: mnemonic = B; form = C ", ['Xns, 'Offsetreg]"; break; + LOAD_STORE_LIST(LS_REGISTEROFFSET) + #undef LS_REGISTEROFFSET + case PRFM_reg: mnemonic = "prfm"; form = "'PrefOp, ['Xns, 'Offsetreg]"; + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitLoadStoreUnscaledOffset(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "'Wt, ['Xns'ILS]"; + const char *form_x = "'Xt, ['Xns'ILS]"; + const char *form_b = "'Bt, ['Xns'ILS]"; + const char *form_h = "'Ht, ['Xns'ILS]"; + const char *form_s = "'St, ['Xns'ILS]"; + const char *form_d = "'Dt, ['Xns'ILS]"; + const char *form_q = "'Qt, ['Xns'ILS]"; + const char *form_prefetch = "'PrefOp, ['Xns'ILS]"; + + switch (instr->Mask(LoadStoreUnscaledOffsetMask)) { + case STURB_w: mnemonic = "sturb"; break; + case STURH_w: mnemonic = "sturh"; break; + case STUR_w: mnemonic = "stur"; break; + case STUR_x: mnemonic = "stur"; form = form_x; break; + case STUR_b: mnemonic = "stur"; form = form_b; break; + case STUR_h: mnemonic = "stur"; form = form_h; break; + case STUR_s: mnemonic = "stur"; form = form_s; break; + case STUR_d: mnemonic = "stur"; form = form_d; break; + case STUR_q: mnemonic = "stur"; form = form_q; break; + case LDURB_w: mnemonic = "ldurb"; break; + case LDURH_w: mnemonic = "ldurh"; break; + case LDUR_w: mnemonic = "ldur"; break; + case LDUR_x: mnemonic = "ldur"; form = form_x; break; + case LDUR_b: mnemonic = "ldur"; form = form_b; break; + case LDUR_h: mnemonic = "ldur"; form = form_h; break; + case LDUR_s: mnemonic = "ldur"; form = form_s; break; + case LDUR_d: mnemonic = "ldur"; form = form_d; break; + case LDUR_q: mnemonic = "ldur"; form = form_q; break; + case LDURSB_x: form = form_x; VIXL_FALLTHROUGH(); + case LDURSB_w: mnemonic = "ldursb"; break; + case LDURSH_x: form = form_x; VIXL_FALLTHROUGH(); + case LDURSH_w: mnemonic = "ldursh"; break; + case LDURSW_x: mnemonic = "ldursw"; form = form_x; break; + case PRFUM: mnemonic = "prfum"; form = form_prefetch; break; + default: form = "(LoadStoreUnscaledOffset)"; + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitLoadLiteral(const Instruction* instr) { + const char *mnemonic = "ldr"; + const char *form = "(LoadLiteral)"; + + switch (instr->Mask(LoadLiteralMask)) { + case LDR_w_lit: form = "'Wt, 'ILLiteral 'LValue"; break; + case LDR_x_lit: form = "'Xt, 'ILLiteral 'LValue"; break; + case LDR_s_lit: form = "'St, 'ILLiteral 'LValue"; break; + case LDR_d_lit: form = "'Dt, 'ILLiteral 'LValue"; break; + case LDR_q_lit: form = "'Qt, 'ILLiteral 'LValue"; break; + case LDRSW_x_lit: { + mnemonic = "ldrsw"; + form = "'Xt, 'ILLiteral 'LValue"; + break; + } + case PRFM_lit: { + mnemonic = "prfm"; + form = "'PrefOp, 'ILLiteral 'LValue"; + break; + } + default: mnemonic = "unimplemented"; + } + Format(instr, mnemonic, form); +} + + +#define LOAD_STORE_PAIR_LIST(V) \ + V(STP_w, "stp", "'Wt, 'Wt2", "2") \ + V(LDP_w, "ldp", "'Wt, 'Wt2", "2") \ + V(LDPSW_x, "ldpsw", "'Xt, 'Xt2", "2") \ + V(STP_x, "stp", "'Xt, 'Xt2", "3") \ + V(LDP_x, "ldp", "'Xt, 'Xt2", "3") \ + V(STP_s, "stp", "'St, 'St2", "2") \ + V(LDP_s, "ldp", "'St, 'St2", "2") \ + V(STP_d, "stp", "'Dt, 'Dt2", "3") \ + V(LDP_d, "ldp", "'Dt, 'Dt2", "3") \ + V(LDP_q, "ldp", "'Qt, 'Qt2", "4") \ + V(STP_q, "stp", "'Qt, 'Qt2", "4") + +void Disassembler::VisitLoadStorePairPostIndex(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "(LoadStorePairPostIndex)"; + + switch (instr->Mask(LoadStorePairPostIndexMask)) { + #define LSP_POSTINDEX(A, B, C, D) \ + case A##_post: mnemonic = B; form = C ", ['Xns]'ILP" D; break; + LOAD_STORE_PAIR_LIST(LSP_POSTINDEX) + #undef LSP_POSTINDEX + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitLoadStorePairPreIndex(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "(LoadStorePairPreIndex)"; + + switch (instr->Mask(LoadStorePairPreIndexMask)) { + #define LSP_PREINDEX(A, B, C, D) \ + case A##_pre: mnemonic = B; form = C ", ['Xns'ILP" D "]!"; break; + LOAD_STORE_PAIR_LIST(LSP_PREINDEX) + #undef LSP_PREINDEX + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitLoadStorePairOffset(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "(LoadStorePairOffset)"; + + switch (instr->Mask(LoadStorePairOffsetMask)) { + #define LSP_OFFSET(A, B, C, D) \ + case A##_off: mnemonic = B; form = C ", ['Xns'ILP" D "]"; break; + LOAD_STORE_PAIR_LIST(LSP_OFFSET) + #undef LSP_OFFSET + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitLoadStorePairNonTemporal(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form; + + switch (instr->Mask(LoadStorePairNonTemporalMask)) { + case STNP_w: mnemonic = "stnp"; form = "'Wt, 'Wt2, ['Xns'ILP2]"; break; + case LDNP_w: mnemonic = "ldnp"; form = "'Wt, 'Wt2, ['Xns'ILP2]"; break; + case STNP_x: mnemonic = "stnp"; form = "'Xt, 'Xt2, ['Xns'ILP3]"; break; + case LDNP_x: mnemonic = "ldnp"; form = "'Xt, 'Xt2, ['Xns'ILP3]"; break; + case STNP_s: mnemonic = "stnp"; form = "'St, 'St2, ['Xns'ILP2]"; break; + case LDNP_s: mnemonic = "ldnp"; form = "'St, 'St2, ['Xns'ILP2]"; break; + case STNP_d: mnemonic = "stnp"; form = "'Dt, 'Dt2, ['Xns'ILP3]"; break; + case LDNP_d: mnemonic = "ldnp"; form = "'Dt, 'Dt2, ['Xns'ILP3]"; break; + case STNP_q: mnemonic = "stnp"; form = "'Qt, 'Qt2, ['Xns'ILP4]"; break; + case LDNP_q: mnemonic = "ldnp"; form = "'Qt, 'Qt2, ['Xns'ILP4]"; break; + default: form = "(LoadStorePairNonTemporal)"; + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitLoadStoreExclusive(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form; + + switch (instr->Mask(LoadStoreExclusiveMask)) { + case STXRB_w: mnemonic = "stxrb"; form = "'Ws, 'Wt, ['Xns]"; break; + case STXRH_w: mnemonic = "stxrh"; form = "'Ws, 'Wt, ['Xns]"; break; + case STXR_w: mnemonic = "stxr"; form = "'Ws, 'Wt, ['Xns]"; break; + case STXR_x: mnemonic = "stxr"; form = "'Ws, 'Xt, ['Xns]"; break; + case LDXRB_w: mnemonic = "ldxrb"; form = "'Wt, ['Xns]"; break; + case LDXRH_w: mnemonic = "ldxrh"; form = "'Wt, ['Xns]"; break; + case LDXR_w: mnemonic = "ldxr"; form = "'Wt, ['Xns]"; break; + case LDXR_x: mnemonic = "ldxr"; form = "'Xt, ['Xns]"; break; + case STXP_w: mnemonic = "stxp"; form = "'Ws, 'Wt, 'Wt2, ['Xns]"; break; + case STXP_x: mnemonic = "stxp"; form = "'Ws, 'Xt, 'Xt2, ['Xns]"; break; + case LDXP_w: mnemonic = "ldxp"; form = "'Wt, 'Wt2, ['Xns]"; break; + case LDXP_x: mnemonic = "ldxp"; form = "'Xt, 'Xt2, ['Xns]"; break; + case STLXRB_w: mnemonic = "stlxrb"; form = "'Ws, 'Wt, ['Xns]"; break; + case STLXRH_w: mnemonic = "stlxrh"; form = "'Ws, 'Wt, ['Xns]"; break; + case STLXR_w: mnemonic = "stlxr"; form = "'Ws, 'Wt, ['Xns]"; break; + case STLXR_x: mnemonic = "stlxr"; form = "'Ws, 'Xt, ['Xns]"; break; + case LDAXRB_w: mnemonic = "ldaxrb"; form = "'Wt, ['Xns]"; break; + case LDAXRH_w: mnemonic = "ldaxrh"; form = "'Wt, ['Xns]"; break; + case LDAXR_w: mnemonic = "ldaxr"; form = "'Wt, ['Xns]"; break; + case LDAXR_x: mnemonic = "ldaxr"; form = "'Xt, ['Xns]"; break; + case STLXP_w: mnemonic = "stlxp"; form = "'Ws, 'Wt, 'Wt2, ['Xns]"; break; + case STLXP_x: mnemonic = "stlxp"; form = "'Ws, 'Xt, 'Xt2, ['Xns]"; break; + case LDAXP_w: mnemonic = "ldaxp"; form = "'Wt, 'Wt2, ['Xns]"; break; + case LDAXP_x: mnemonic = "ldaxp"; form = "'Xt, 'Xt2, ['Xns]"; break; + case STLRB_w: mnemonic = "stlrb"; form = "'Wt, ['Xns]"; break; + case STLRH_w: mnemonic = "stlrh"; form = "'Wt, ['Xns]"; break; + case STLR_w: mnemonic = "stlr"; form = "'Wt, ['Xns]"; break; + case STLR_x: mnemonic = "stlr"; form = "'Xt, ['Xns]"; break; + case LDARB_w: mnemonic = "ldarb"; form = "'Wt, ['Xns]"; break; + case LDARH_w: mnemonic = "ldarh"; form = "'Wt, ['Xns]"; break; + case LDAR_w: mnemonic = "ldar"; form = "'Wt, ['Xns]"; break; + case LDAR_x: mnemonic = "ldar"; form = "'Xt, ['Xns]"; break; + default: form = "(LoadStoreExclusive)"; + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitFPCompare(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "'Fn, 'Fm"; + const char *form_zero = "'Fn, #0.0"; + + switch (instr->Mask(FPCompareMask)) { + case FCMP_s_zero: + case FCMP_d_zero: form = form_zero; VIXL_FALLTHROUGH(); + case FCMP_s: + case FCMP_d: mnemonic = "fcmp"; break; + case FCMPE_s_zero: + case FCMPE_d_zero: form = form_zero; VIXL_FALLTHROUGH(); + case FCMPE_s: + case FCMPE_d: mnemonic = "fcmpe"; break; + default: form = "(FPCompare)"; + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitFPConditionalCompare(const Instruction* instr) { + const char *mnemonic = "unmplemented"; + const char *form = "'Fn, 'Fm, 'INzcv, 'Cond"; + + switch (instr->Mask(FPConditionalCompareMask)) { + case FCCMP_s: + case FCCMP_d: mnemonic = "fccmp"; break; + case FCCMPE_s: + case FCCMPE_d: mnemonic = "fccmpe"; break; + default: form = "(FPConditionalCompare)"; + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitFPConditionalSelect(const Instruction* instr) { + const char *mnemonic = ""; + const char *form = "'Fd, 'Fn, 'Fm, 'Cond"; + + switch (instr->Mask(FPConditionalSelectMask)) { + case FCSEL_s: + case FCSEL_d: mnemonic = "fcsel"; break; + default: VIXL_UNREACHABLE(); + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitFPDataProcessing1Source(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "'Fd, 'Fn"; + + switch (instr->Mask(FPDataProcessing1SourceMask)) { + #define FORMAT(A, B) \ + case A##_s: \ + case A##_d: mnemonic = B; break; + FORMAT(FMOV, "fmov"); + FORMAT(FABS, "fabs"); + FORMAT(FNEG, "fneg"); + FORMAT(FSQRT, "fsqrt"); + FORMAT(FRINTN, "frintn"); + FORMAT(FRINTP, "frintp"); + FORMAT(FRINTM, "frintm"); + FORMAT(FRINTZ, "frintz"); + FORMAT(FRINTA, "frinta"); + FORMAT(FRINTX, "frintx"); + FORMAT(FRINTI, "frinti"); + #undef FORMAT + case FCVT_ds: mnemonic = "fcvt"; form = "'Dd, 'Sn"; break; + case FCVT_sd: mnemonic = "fcvt"; form = "'Sd, 'Dn"; break; + case FCVT_hs: mnemonic = "fcvt"; form = "'Hd, 'Sn"; break; + case FCVT_sh: mnemonic = "fcvt"; form = "'Sd, 'Hn"; break; + case FCVT_dh: mnemonic = "fcvt"; form = "'Dd, 'Hn"; break; + case FCVT_hd: mnemonic = "fcvt"; form = "'Hd, 'Dn"; break; + default: form = "(FPDataProcessing1Source)"; + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitFPDataProcessing2Source(const Instruction* instr) { + const char *mnemonic = ""; + const char *form = "'Fd, 'Fn, 'Fm"; + + switch (instr->Mask(FPDataProcessing2SourceMask)) { + #define FORMAT(A, B) \ + case A##_s: \ + case A##_d: mnemonic = B; break; + FORMAT(FMUL, "fmul"); + FORMAT(FDIV, "fdiv"); + FORMAT(FADD, "fadd"); + FORMAT(FSUB, "fsub"); + FORMAT(FMAX, "fmax"); + FORMAT(FMIN, "fmin"); + FORMAT(FMAXNM, "fmaxnm"); + FORMAT(FMINNM, "fminnm"); + FORMAT(FNMUL, "fnmul"); + #undef FORMAT + default: VIXL_UNREACHABLE(); + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitFPDataProcessing3Source(const Instruction* instr) { + const char *mnemonic = ""; + const char *form = "'Fd, 'Fn, 'Fm, 'Fa"; + + switch (instr->Mask(FPDataProcessing3SourceMask)) { + #define FORMAT(A, B) \ + case A##_s: \ + case A##_d: mnemonic = B; break; + FORMAT(FMADD, "fmadd"); + FORMAT(FMSUB, "fmsub"); + FORMAT(FNMADD, "fnmadd"); + FORMAT(FNMSUB, "fnmsub"); + #undef FORMAT + default: VIXL_UNREACHABLE(); + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitFPImmediate(const Instruction* instr) { + const char *mnemonic = ""; + const char *form = "(FPImmediate)"; + + switch (instr->Mask(FPImmediateMask)) { + case FMOV_s_imm: mnemonic = "fmov"; form = "'Sd, 'IFPSingle"; break; + case FMOV_d_imm: mnemonic = "fmov"; form = "'Dd, 'IFPDouble"; break; + default: VIXL_UNREACHABLE(); + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitFPIntegerConvert(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "(FPIntegerConvert)"; + const char *form_rf = "'Rd, 'Fn"; + const char *form_fr = "'Fd, 'Rn"; + + switch (instr->Mask(FPIntegerConvertMask)) { + case FMOV_ws: + case FMOV_xd: mnemonic = "fmov"; form = form_rf; break; + case FMOV_sw: + case FMOV_dx: mnemonic = "fmov"; form = form_fr; break; + case FMOV_d1_x: mnemonic = "fmov"; form = "'Vd.D[1], 'Rn"; break; + case FMOV_x_d1: mnemonic = "fmov"; form = "'Rd, 'Vn.D[1]"; break; + case FCVTAS_ws: + case FCVTAS_xs: + case FCVTAS_wd: + case FCVTAS_xd: mnemonic = "fcvtas"; form = form_rf; break; + case FCVTAU_ws: + case FCVTAU_xs: + case FCVTAU_wd: + case FCVTAU_xd: mnemonic = "fcvtau"; form = form_rf; break; + case FCVTMS_ws: + case FCVTMS_xs: + case FCVTMS_wd: + case FCVTMS_xd: mnemonic = "fcvtms"; form = form_rf; break; + case FCVTMU_ws: + case FCVTMU_xs: + case FCVTMU_wd: + case FCVTMU_xd: mnemonic = "fcvtmu"; form = form_rf; break; + case FCVTNS_ws: + case FCVTNS_xs: + case FCVTNS_wd: + case FCVTNS_xd: mnemonic = "fcvtns"; form = form_rf; break; + case FCVTNU_ws: + case FCVTNU_xs: + case FCVTNU_wd: + case FCVTNU_xd: mnemonic = "fcvtnu"; form = form_rf; break; + case FCVTZU_xd: + case FCVTZU_ws: + case FCVTZU_wd: + case FCVTZU_xs: mnemonic = "fcvtzu"; form = form_rf; break; + case FCVTZS_xd: + case FCVTZS_wd: + case FCVTZS_xs: + case FCVTZS_ws: mnemonic = "fcvtzs"; form = form_rf; break; + case FCVTPU_xd: + case FCVTPU_ws: + case FCVTPU_wd: + case FCVTPU_xs: mnemonic = "fcvtpu"; form = form_rf; break; + case FCVTPS_xd: + case FCVTPS_wd: + case FCVTPS_xs: + case FCVTPS_ws: mnemonic = "fcvtps"; form = form_rf; break; + case SCVTF_sw: + case SCVTF_sx: + case SCVTF_dw: + case SCVTF_dx: mnemonic = "scvtf"; form = form_fr; break; + case UCVTF_sw: + case UCVTF_sx: + case UCVTF_dw: + case UCVTF_dx: mnemonic = "ucvtf"; form = form_fr; break; + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitFPFixedPointConvert(const Instruction* instr) { + const char *mnemonic = ""; + const char *form = "'Rd, 'Fn, 'IFPFBits"; + const char *form_fr = "'Fd, 'Rn, 'IFPFBits"; + + switch (instr->Mask(FPFixedPointConvertMask)) { + case FCVTZS_ws_fixed: + case FCVTZS_xs_fixed: + case FCVTZS_wd_fixed: + case FCVTZS_xd_fixed: mnemonic = "fcvtzs"; break; + case FCVTZU_ws_fixed: + case FCVTZU_xs_fixed: + case FCVTZU_wd_fixed: + case FCVTZU_xd_fixed: mnemonic = "fcvtzu"; break; + case SCVTF_sw_fixed: + case SCVTF_sx_fixed: + case SCVTF_dw_fixed: + case SCVTF_dx_fixed: mnemonic = "scvtf"; form = form_fr; break; + case UCVTF_sw_fixed: + case UCVTF_sx_fixed: + case UCVTF_dw_fixed: + case UCVTF_dx_fixed: mnemonic = "ucvtf"; form = form_fr; break; + default: VIXL_UNREACHABLE(); + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitSystem(const Instruction* instr) { + // Some system instructions hijack their Op and Cp fields to represent a + // range of immediates instead of indicating a different instruction. This + // makes the decoding tricky. + const char *mnemonic = "unimplemented"; + const char *form = "(System)"; + + if (instr->Mask(SystemExclusiveMonitorFMask) == SystemExclusiveMonitorFixed) { + switch (instr->Mask(SystemExclusiveMonitorMask)) { + case CLREX: { + mnemonic = "clrex"; + form = (instr->CRm() == 0xf) ? NULL : "'IX"; + break; + } + } + } else if (instr->Mask(SystemSysRegFMask) == SystemSysRegFixed) { + switch (instr->Mask(SystemSysRegMask)) { + case MRS: { + mnemonic = "mrs"; + switch (instr->ImmSystemRegister()) { + case NZCV: form = "'Xt, nzcv"; break; + case FPCR: form = "'Xt, fpcr"; break; + default: form = "'Xt, (unknown)"; break; + } + break; + } + case MSR: { + mnemonic = "msr"; + switch (instr->ImmSystemRegister()) { + case NZCV: form = "nzcv, 'Xt"; break; + case FPCR: form = "fpcr, 'Xt"; break; + default: form = "(unknown), 'Xt"; break; + } + break; + } + } + } else if (instr->Mask(SystemHintFMask) == SystemHintFixed) { + switch (instr->ImmHint()) { + case NOP: { + mnemonic = "nop"; + form = NULL; + break; + } + } + } else if (instr->Mask(MemBarrierFMask) == MemBarrierFixed) { + switch (instr->Mask(MemBarrierMask)) { + case DMB: { + mnemonic = "dmb"; + form = "'M"; + break; + } + case DSB: { + mnemonic = "dsb"; + form = "'M"; + break; + } + case ISB: { + mnemonic = "isb"; + form = NULL; + break; + } + } + } else if (instr->Mask(SystemSysFMask) == SystemSysFixed) { + switch (instr->SysOp()) { + case IVAU: + mnemonic = "ic"; + form = "ivau, 'Xt"; + break; + case CVAC: + mnemonic = "dc"; + form = "cvac, 'Xt"; + break; + case CVAU: + mnemonic = "dc"; + form = "cvau, 'Xt"; + break; + case CIVAC: + mnemonic = "dc"; + form = "civac, 'Xt"; + break; + case ZVA: + mnemonic = "dc"; + form = "zva, 'Xt"; + break; + default: + mnemonic = "sys"; + if (instr->Rt() == 31) { + form = "'G1, 'Kn, 'Km, 'G2"; + } else { + form = "'G1, 'Kn, 'Km, 'G2, 'Xt"; + } + break; + } + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitException(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "'IDebug"; + + switch (instr->Mask(ExceptionMask)) { + case HLT: mnemonic = "hlt"; break; + case BRK: mnemonic = "brk"; break; + case SVC: mnemonic = "svc"; break; + case HVC: mnemonic = "hvc"; break; + case SMC: mnemonic = "smc"; break; + case DCPS1: mnemonic = "dcps1"; form = "{'IDebug}"; break; + case DCPS2: mnemonic = "dcps2"; form = "{'IDebug}"; break; + case DCPS3: mnemonic = "dcps3"; form = "{'IDebug}"; break; + default: form = "(Exception)"; + } + Format(instr, mnemonic, form); +} + + +void Disassembler::VisitCrypto2RegSHA(const Instruction* instr) { + VisitUnimplemented(instr); +} + + +void Disassembler::VisitCrypto3RegSHA(const Instruction* instr) { + VisitUnimplemented(instr); +} + + +void Disassembler::VisitCryptoAES(const Instruction* instr) { + VisitUnimplemented(instr); +} + + +void Disassembler::VisitNEON2RegMisc(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "'Vd.%s, 'Vn.%s"; + const char *form_cmp_zero = "'Vd.%s, 'Vn.%s, #0"; + const char *form_fcmp_zero = "'Vd.%s, 'Vn.%s, #0.0"; + NEONFormatDecoder nfd(instr); + + static const NEONFormatMap map_lp_ta = { + {23, 22, 30}, {NF_4H, NF_8H, NF_2S, NF_4S, NF_1D, NF_2D} + }; + + static const NEONFormatMap map_cvt_ta = { + {22}, {NF_4S, NF_2D} + }; + + static const NEONFormatMap map_cvt_tb = { + {22, 30}, {NF_4H, NF_8H, NF_2S, NF_4S} + }; + + if (instr->Mask(NEON2RegMiscOpcode) <= NEON_NEG_opcode) { + // These instructions all use a two bit size field, except NOT and RBIT, + // which use the field to encode the operation. + switch (instr->Mask(NEON2RegMiscMask)) { + case NEON_REV64: mnemonic = "rev64"; break; + case NEON_REV32: mnemonic = "rev32"; break; + case NEON_REV16: mnemonic = "rev16"; break; + case NEON_SADDLP: + mnemonic = "saddlp"; + nfd.SetFormatMap(0, &map_lp_ta); + break; + case NEON_UADDLP: + mnemonic = "uaddlp"; + nfd.SetFormatMap(0, &map_lp_ta); + break; + case NEON_SUQADD: mnemonic = "suqadd"; break; + case NEON_USQADD: mnemonic = "usqadd"; break; + case NEON_CLS: mnemonic = "cls"; break; + case NEON_CLZ: mnemonic = "clz"; break; + case NEON_CNT: mnemonic = "cnt"; break; + case NEON_SADALP: + mnemonic = "sadalp"; + nfd.SetFormatMap(0, &map_lp_ta); + break; + case NEON_UADALP: + mnemonic = "uadalp"; + nfd.SetFormatMap(0, &map_lp_ta); + break; + case NEON_SQABS: mnemonic = "sqabs"; break; + case NEON_SQNEG: mnemonic = "sqneg"; break; + case NEON_CMGT_zero: mnemonic = "cmgt"; form = form_cmp_zero; break; + case NEON_CMGE_zero: mnemonic = "cmge"; form = form_cmp_zero; break; + case NEON_CMEQ_zero: mnemonic = "cmeq"; form = form_cmp_zero; break; + case NEON_CMLE_zero: mnemonic = "cmle"; form = form_cmp_zero; break; + case NEON_CMLT_zero: mnemonic = "cmlt"; form = form_cmp_zero; break; + case NEON_ABS: mnemonic = "abs"; break; + case NEON_NEG: mnemonic = "neg"; break; + case NEON_RBIT_NOT: + switch (instr->FPType()) { + case 0: mnemonic = "mvn"; break; + case 1: mnemonic = "rbit"; break; + default: form = "(NEON2RegMisc)"; + } + nfd.SetFormatMaps(nfd.LogicalFormatMap()); + break; + } + } else { + // These instructions all use a one bit size field, except XTN, SQXTUN, + // SHLL, SQXTN and UQXTN, which use a two bit size field. + nfd.SetFormatMaps(nfd.FPFormatMap()); + switch (instr->Mask(NEON2RegMiscFPMask)) { + case NEON_FABS: mnemonic = "fabs"; break; + case NEON_FNEG: mnemonic = "fneg"; break; + case NEON_FCVTN: + mnemonic = instr->Mask(NEON_Q) ? "fcvtn2" : "fcvtn"; + nfd.SetFormatMap(0, &map_cvt_tb); + nfd.SetFormatMap(1, &map_cvt_ta); + break; + case NEON_FCVTXN: + mnemonic = instr->Mask(NEON_Q) ? "fcvtxn2" : "fcvtxn"; + nfd.SetFormatMap(0, &map_cvt_tb); + nfd.SetFormatMap(1, &map_cvt_ta); + break; + case NEON_FCVTL: + mnemonic = instr->Mask(NEON_Q) ? "fcvtl2" : "fcvtl"; + nfd.SetFormatMap(0, &map_cvt_ta); + nfd.SetFormatMap(1, &map_cvt_tb); + break; + case NEON_FRINTN: mnemonic = "frintn"; break; + case NEON_FRINTA: mnemonic = "frinta"; break; + case NEON_FRINTP: mnemonic = "frintp"; break; + case NEON_FRINTM: mnemonic = "frintm"; break; + case NEON_FRINTX: mnemonic = "frintx"; break; + case NEON_FRINTZ: mnemonic = "frintz"; break; + case NEON_FRINTI: mnemonic = "frinti"; break; + case NEON_FCVTNS: mnemonic = "fcvtns"; break; + case NEON_FCVTNU: mnemonic = "fcvtnu"; break; + case NEON_FCVTPS: mnemonic = "fcvtps"; break; + case NEON_FCVTPU: mnemonic = "fcvtpu"; break; + case NEON_FCVTMS: mnemonic = "fcvtms"; break; + case NEON_FCVTMU: mnemonic = "fcvtmu"; break; + case NEON_FCVTZS: mnemonic = "fcvtzs"; break; + case NEON_FCVTZU: mnemonic = "fcvtzu"; break; + case NEON_FCVTAS: mnemonic = "fcvtas"; break; + case NEON_FCVTAU: mnemonic = "fcvtau"; break; + case NEON_FSQRT: mnemonic = "fsqrt"; break; + case NEON_SCVTF: mnemonic = "scvtf"; break; + case NEON_UCVTF: mnemonic = "ucvtf"; break; + case NEON_URSQRTE: mnemonic = "ursqrte"; break; + case NEON_URECPE: mnemonic = "urecpe"; break; + case NEON_FRSQRTE: mnemonic = "frsqrte"; break; + case NEON_FRECPE: mnemonic = "frecpe"; break; + case NEON_FCMGT_zero: mnemonic = "fcmgt"; form = form_fcmp_zero; break; + case NEON_FCMGE_zero: mnemonic = "fcmge"; form = form_fcmp_zero; break; + case NEON_FCMEQ_zero: mnemonic = "fcmeq"; form = form_fcmp_zero; break; + case NEON_FCMLE_zero: mnemonic = "fcmle"; form = form_fcmp_zero; break; + case NEON_FCMLT_zero: mnemonic = "fcmlt"; form = form_fcmp_zero; break; + default: + if ((NEON_XTN_opcode <= instr->Mask(NEON2RegMiscOpcode)) && + (instr->Mask(NEON2RegMiscOpcode) <= NEON_UQXTN_opcode)) { + nfd.SetFormatMap(0, nfd.IntegerFormatMap()); + nfd.SetFormatMap(1, nfd.LongIntegerFormatMap()); + + switch (instr->Mask(NEON2RegMiscMask)) { + case NEON_XTN: mnemonic = "xtn"; break; + case NEON_SQXTN: mnemonic = "sqxtn"; break; + case NEON_UQXTN: mnemonic = "uqxtn"; break; + case NEON_SQXTUN: mnemonic = "sqxtun"; break; + case NEON_SHLL: + mnemonic = "shll"; + nfd.SetFormatMap(0, nfd.LongIntegerFormatMap()); + nfd.SetFormatMap(1, nfd.IntegerFormatMap()); + switch (instr->NEONSize()) { + case 0: form = "'Vd.%s, 'Vn.%s, #8"; break; + case 1: form = "'Vd.%s, 'Vn.%s, #16"; break; + case 2: form = "'Vd.%s, 'Vn.%s, #32"; break; + default: form = "(NEON2RegMisc)"; + } + } + Format(instr, nfd.Mnemonic(mnemonic), nfd.Substitute(form)); + return; + } else { + form = "(NEON2RegMisc)"; + } + } + } + Format(instr, mnemonic, nfd.Substitute(form)); +} + + +void Disassembler::VisitNEON3Same(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "'Vd.%s, 'Vn.%s, 'Vm.%s"; + NEONFormatDecoder nfd(instr); + + if (instr->Mask(NEON3SameLogicalFMask) == NEON3SameLogicalFixed) { + switch (instr->Mask(NEON3SameLogicalMask)) { + case NEON_AND: mnemonic = "and"; break; + case NEON_ORR: + mnemonic = "orr"; + if (instr->Rm() == instr->Rn()) { + mnemonic = "mov"; + form = "'Vd.%s, 'Vn.%s"; + } + break; + case NEON_ORN: mnemonic = "orn"; break; + case NEON_EOR: mnemonic = "eor"; break; + case NEON_BIC: mnemonic = "bic"; break; + case NEON_BIF: mnemonic = "bif"; break; + case NEON_BIT: mnemonic = "bit"; break; + case NEON_BSL: mnemonic = "bsl"; break; + default: form = "(NEON3Same)"; + } + nfd.SetFormatMaps(nfd.LogicalFormatMap()); + } else { + static const char *mnemonics[] = { + "shadd", "uhadd", "shadd", "uhadd", + "sqadd", "uqadd", "sqadd", "uqadd", + "srhadd", "urhadd", "srhadd", "urhadd", + NULL, NULL, NULL, NULL, // Handled by logical cases above. + "shsub", "uhsub", "shsub", "uhsub", + "sqsub", "uqsub", "sqsub", "uqsub", + "cmgt", "cmhi", "cmgt", "cmhi", + "cmge", "cmhs", "cmge", "cmhs", + "sshl", "ushl", "sshl", "ushl", + "sqshl", "uqshl", "sqshl", "uqshl", + "srshl", "urshl", "srshl", "urshl", + "sqrshl", "uqrshl", "sqrshl", "uqrshl", + "smax", "umax", "smax", "umax", + "smin", "umin", "smin", "umin", + "sabd", "uabd", "sabd", "uabd", + "saba", "uaba", "saba", "uaba", + "add", "sub", "add", "sub", + "cmtst", "cmeq", "cmtst", "cmeq", + "mla", "mls", "mla", "mls", + "mul", "pmul", "mul", "pmul", + "smaxp", "umaxp", "smaxp", "umaxp", + "sminp", "uminp", "sminp", "uminp", + "sqdmulh", "sqrdmulh", "sqdmulh", "sqrdmulh", + "addp", "unallocated", "addp", "unallocated", + "fmaxnm", "fmaxnmp", "fminnm", "fminnmp", + "fmla", "unallocated", "fmls", "unallocated", + "fadd", "faddp", "fsub", "fabd", + "fmulx", "fmul", "unallocated", "unallocated", + "fcmeq", "fcmge", "unallocated", "fcmgt", + "unallocated", "facge", "unallocated", "facgt", + "fmax", "fmaxp", "fmin", "fminp", + "frecps", "fdiv", "frsqrts", "unallocated"}; + + // Operation is determined by the opcode bits (15-11), the top bit of + // size (23) and the U bit (29). + unsigned index = (instr->Bits(15, 11) << 2) | (instr->Bit(23) << 1) | + instr->Bit(29); + VIXL_ASSERT(index < (sizeof(mnemonics) / sizeof(mnemonics[0]))); + mnemonic = mnemonics[index]; + // Assert that index is not one of the previously handled logical + // instructions. + VIXL_ASSERT(mnemonic != NULL); + + if (instr->Mask(NEON3SameFPFMask) == NEON3SameFPFixed) { + nfd.SetFormatMaps(nfd.FPFormatMap()); + } + } + Format(instr, mnemonic, nfd.Substitute(form)); +} + + +void Disassembler::VisitNEON3Different(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "'Vd.%s, 'Vn.%s, 'Vm.%s"; + + NEONFormatDecoder nfd(instr); + nfd.SetFormatMap(0, nfd.LongIntegerFormatMap()); + + // Ignore the Q bit. Appending a "2" suffix is handled later. + switch (instr->Mask(NEON3DifferentMask) & ~NEON_Q) { + case NEON_PMULL: mnemonic = "pmull"; break; + case NEON_SABAL: mnemonic = "sabal"; break; + case NEON_SABDL: mnemonic = "sabdl"; break; + case NEON_SADDL: mnemonic = "saddl"; break; + case NEON_SMLAL: mnemonic = "smlal"; break; + case NEON_SMLSL: mnemonic = "smlsl"; break; + case NEON_SMULL: mnemonic = "smull"; break; + case NEON_SSUBL: mnemonic = "ssubl"; break; + case NEON_SQDMLAL: mnemonic = "sqdmlal"; break; + case NEON_SQDMLSL: mnemonic = "sqdmlsl"; break; + case NEON_SQDMULL: mnemonic = "sqdmull"; break; + case NEON_UABAL: mnemonic = "uabal"; break; + case NEON_UABDL: mnemonic = "uabdl"; break; + case NEON_UADDL: mnemonic = "uaddl"; break; + case NEON_UMLAL: mnemonic = "umlal"; break; + case NEON_UMLSL: mnemonic = "umlsl"; break; + case NEON_UMULL: mnemonic = "umull"; break; + case NEON_USUBL: mnemonic = "usubl"; break; + case NEON_SADDW: + mnemonic = "saddw"; + nfd.SetFormatMap(1, nfd.LongIntegerFormatMap()); + break; + case NEON_SSUBW: + mnemonic = "ssubw"; + nfd.SetFormatMap(1, nfd.LongIntegerFormatMap()); + break; + case NEON_UADDW: + mnemonic = "uaddw"; + nfd.SetFormatMap(1, nfd.LongIntegerFormatMap()); + break; + case NEON_USUBW: + mnemonic = "usubw"; + nfd.SetFormatMap(1, nfd.LongIntegerFormatMap()); + break; + case NEON_ADDHN: + mnemonic = "addhn"; + nfd.SetFormatMaps(nfd.LongIntegerFormatMap()); + nfd.SetFormatMap(0, nfd.IntegerFormatMap()); + break; + case NEON_RADDHN: + mnemonic = "raddhn"; + nfd.SetFormatMaps(nfd.LongIntegerFormatMap()); + nfd.SetFormatMap(0, nfd.IntegerFormatMap()); + break; + case NEON_RSUBHN: + mnemonic = "rsubhn"; + nfd.SetFormatMaps(nfd.LongIntegerFormatMap()); + nfd.SetFormatMap(0, nfd.IntegerFormatMap()); + break; + case NEON_SUBHN: + mnemonic = "subhn"; + nfd.SetFormatMaps(nfd.LongIntegerFormatMap()); + nfd.SetFormatMap(0, nfd.IntegerFormatMap()); + break; + default: form = "(NEON3Different)"; + } + Format(instr, nfd.Mnemonic(mnemonic), nfd.Substitute(form)); +} + + +void Disassembler::VisitNEONAcrossLanes(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "%sd, 'Vn.%s"; + + NEONFormatDecoder nfd(instr, NEONFormatDecoder::ScalarFormatMap(), + NEONFormatDecoder::IntegerFormatMap()); + + if (instr->Mask(NEONAcrossLanesFPFMask) == NEONAcrossLanesFPFixed) { + nfd.SetFormatMap(0, nfd.FPScalarFormatMap()); + nfd.SetFormatMap(1, nfd.FPFormatMap()); + switch (instr->Mask(NEONAcrossLanesFPMask)) { + case NEON_FMAXV: mnemonic = "fmaxv"; break; + case NEON_FMINV: mnemonic = "fminv"; break; + case NEON_FMAXNMV: mnemonic = "fmaxnmv"; break; + case NEON_FMINNMV: mnemonic = "fminnmv"; break; + default: form = "(NEONAcrossLanes)"; break; + } + } else if (instr->Mask(NEONAcrossLanesFMask) == NEONAcrossLanesFixed) { + switch (instr->Mask(NEONAcrossLanesMask)) { + case NEON_ADDV: mnemonic = "addv"; break; + case NEON_SMAXV: mnemonic = "smaxv"; break; + case NEON_SMINV: mnemonic = "sminv"; break; + case NEON_UMAXV: mnemonic = "umaxv"; break; + case NEON_UMINV: mnemonic = "uminv"; break; + case NEON_SADDLV: + mnemonic = "saddlv"; + nfd.SetFormatMap(0, nfd.LongScalarFormatMap()); + break; + case NEON_UADDLV: + mnemonic = "uaddlv"; + nfd.SetFormatMap(0, nfd.LongScalarFormatMap()); + break; + default: form = "(NEONAcrossLanes)"; break; + } + } + Format(instr, mnemonic, nfd.Substitute(form, + NEONFormatDecoder::kPlaceholder, NEONFormatDecoder::kFormat)); +} + + +void Disassembler::VisitNEONByIndexedElement(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + bool l_instr = false; + bool fp_instr = false; + + const char *form = "'Vd.%s, 'Vn.%s, 'Ve.%s['IVByElemIndex]"; + + static const NEONFormatMap map_ta = { + {23, 22}, {NF_UNDEF, NF_4S, NF_2D} + }; + NEONFormatDecoder nfd(instr, &map_ta, + NEONFormatDecoder::IntegerFormatMap(), + NEONFormatDecoder::ScalarFormatMap()); + + switch (instr->Mask(NEONByIndexedElementMask)) { + case NEON_SMULL_byelement: mnemonic = "smull"; l_instr = true; break; + case NEON_UMULL_byelement: mnemonic = "umull"; l_instr = true; break; + case NEON_SMLAL_byelement: mnemonic = "smlal"; l_instr = true; break; + case NEON_UMLAL_byelement: mnemonic = "umlal"; l_instr = true; break; + case NEON_SMLSL_byelement: mnemonic = "smlsl"; l_instr = true; break; + case NEON_UMLSL_byelement: mnemonic = "umlsl"; l_instr = true; break; + case NEON_SQDMULL_byelement: mnemonic = "sqdmull"; l_instr = true; break; + case NEON_SQDMLAL_byelement: mnemonic = "sqdmlal"; l_instr = true; break; + case NEON_SQDMLSL_byelement: mnemonic = "sqdmlsl"; l_instr = true; break; + case NEON_MUL_byelement: mnemonic = "mul"; break; + case NEON_MLA_byelement: mnemonic = "mla"; break; + case NEON_MLS_byelement: mnemonic = "mls"; break; + case NEON_SQDMULH_byelement: mnemonic = "sqdmulh"; break; + case NEON_SQRDMULH_byelement: mnemonic = "sqrdmulh"; break; + default: + switch (instr->Mask(NEONByIndexedElementFPMask)) { + case NEON_FMUL_byelement: mnemonic = "fmul"; fp_instr = true; break; + case NEON_FMLA_byelement: mnemonic = "fmla"; fp_instr = true; break; + case NEON_FMLS_byelement: mnemonic = "fmls"; fp_instr = true; break; + case NEON_FMULX_byelement: mnemonic = "fmulx"; fp_instr = true; break; + } + } + + if (l_instr) { + Format(instr, nfd.Mnemonic(mnemonic), nfd.Substitute(form)); + } else if (fp_instr) { + nfd.SetFormatMap(0, nfd.FPFormatMap()); + Format(instr, mnemonic, nfd.Substitute(form)); + } else { + nfd.SetFormatMap(0, nfd.IntegerFormatMap()); + Format(instr, mnemonic, nfd.Substitute(form)); + } +} + + +void Disassembler::VisitNEONCopy(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "(NEONCopy)"; + + NEONFormatDecoder nfd(instr, NEONFormatDecoder::TriangularFormatMap(), + NEONFormatDecoder::TriangularScalarFormatMap()); + + if (instr->Mask(NEONCopyInsElementMask) == NEON_INS_ELEMENT) { + mnemonic = "mov"; + nfd.SetFormatMap(0, nfd.TriangularScalarFormatMap()); + form = "'Vd.%s['IVInsIndex1], 'Vn.%s['IVInsIndex2]"; + } else if (instr->Mask(NEONCopyInsGeneralMask) == NEON_INS_GENERAL) { + mnemonic = "mov"; + nfd.SetFormatMap(0, nfd.TriangularScalarFormatMap()); + if (nfd.GetVectorFormat() == kFormatD) { + form = "'Vd.%s['IVInsIndex1], 'Xn"; + } else { + form = "'Vd.%s['IVInsIndex1], 'Wn"; + } + } else if (instr->Mask(NEONCopyUmovMask) == NEON_UMOV) { + if (instr->Mask(NEON_Q) || ((instr->ImmNEON5() & 7) == 4)) { + mnemonic = "mov"; + } else { + mnemonic = "umov"; + } + nfd.SetFormatMap(0, nfd.TriangularScalarFormatMap()); + if (nfd.GetVectorFormat() == kFormatD) { + form = "'Xd, 'Vn.%s['IVInsIndex1]"; + } else { + form = "'Wd, 'Vn.%s['IVInsIndex1]"; + } + } else if (instr->Mask(NEONCopySmovMask) == NEON_SMOV) { + mnemonic = "smov"; + nfd.SetFormatMap(0, nfd.TriangularScalarFormatMap()); + form = "'Rdq, 'Vn.%s['IVInsIndex1]"; + } else if (instr->Mask(NEONCopyDupElementMask) == NEON_DUP_ELEMENT) { + mnemonic = "dup"; + form = "'Vd.%s, 'Vn.%s['IVInsIndex1]"; + } else if (instr->Mask(NEONCopyDupGeneralMask) == NEON_DUP_GENERAL) { + mnemonic = "dup"; + if (nfd.GetVectorFormat() == kFormat2D) { + form = "'Vd.%s, 'Xn"; + } else { + form = "'Vd.%s, 'Wn"; + } + } + Format(instr, mnemonic, nfd.Substitute(form)); +} + + +void Disassembler::VisitNEONExtract(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "(NEONExtract)"; + NEONFormatDecoder nfd(instr, NEONFormatDecoder::LogicalFormatMap()); + if (instr->Mask(NEONExtractMask) == NEON_EXT) { + mnemonic = "ext"; + form = "'Vd.%s, 'Vn.%s, 'Vm.%s, 'IVExtract"; + } + Format(instr, mnemonic, nfd.Substitute(form)); +} + + +void Disassembler::VisitNEONLoadStoreMultiStruct(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "(NEONLoadStoreMultiStruct)"; + const char *form_1v = "{'Vt.%1$s}, ['Xns]"; + const char *form_2v = "{'Vt.%1$s, 'Vt2.%1$s}, ['Xns]"; + const char *form_3v = "{'Vt.%1$s, 'Vt2.%1$s, 'Vt3.%1$s}, ['Xns]"; + const char *form_4v = "{'Vt.%1$s, 'Vt2.%1$s, 'Vt3.%1$s, 'Vt4.%1$s}, ['Xns]"; + NEONFormatDecoder nfd(instr, NEONFormatDecoder::LoadStoreFormatMap()); + + switch (instr->Mask(NEONLoadStoreMultiStructMask)) { + case NEON_LD1_1v: mnemonic = "ld1"; form = form_1v; break; + case NEON_LD1_2v: mnemonic = "ld1"; form = form_2v; break; + case NEON_LD1_3v: mnemonic = "ld1"; form = form_3v; break; + case NEON_LD1_4v: mnemonic = "ld1"; form = form_4v; break; + case NEON_LD2: mnemonic = "ld2"; form = form_2v; break; + case NEON_LD3: mnemonic = "ld3"; form = form_3v; break; + case NEON_LD4: mnemonic = "ld4"; form = form_4v; break; + case NEON_ST1_1v: mnemonic = "st1"; form = form_1v; break; + case NEON_ST1_2v: mnemonic = "st1"; form = form_2v; break; + case NEON_ST1_3v: mnemonic = "st1"; form = form_3v; break; + case NEON_ST1_4v: mnemonic = "st1"; form = form_4v; break; + case NEON_ST2: mnemonic = "st2"; form = form_2v; break; + case NEON_ST3: mnemonic = "st3"; form = form_3v; break; + case NEON_ST4: mnemonic = "st4"; form = form_4v; break; + default: break; + } + + Format(instr, mnemonic, nfd.Substitute(form)); +} + + +void Disassembler::VisitNEONLoadStoreMultiStructPostIndex( + const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "(NEONLoadStoreMultiStructPostIndex)"; + const char *form_1v = "{'Vt.%1$s}, ['Xns], 'Xmr1"; + const char *form_2v = "{'Vt.%1$s, 'Vt2.%1$s}, ['Xns], 'Xmr2"; + const char *form_3v = "{'Vt.%1$s, 'Vt2.%1$s, 'Vt3.%1$s}, ['Xns], 'Xmr3"; + const char *form_4v = + "{'Vt.%1$s, 'Vt2.%1$s, 'Vt3.%1$s, 'Vt4.%1$s}, ['Xns], 'Xmr4"; + NEONFormatDecoder nfd(instr, NEONFormatDecoder::LoadStoreFormatMap()); + + switch (instr->Mask(NEONLoadStoreMultiStructPostIndexMask)) { + case NEON_LD1_1v_post: mnemonic = "ld1"; form = form_1v; break; + case NEON_LD1_2v_post: mnemonic = "ld1"; form = form_2v; break; + case NEON_LD1_3v_post: mnemonic = "ld1"; form = form_3v; break; + case NEON_LD1_4v_post: mnemonic = "ld1"; form = form_4v; break; + case NEON_LD2_post: mnemonic = "ld2"; form = form_2v; break; + case NEON_LD3_post: mnemonic = "ld3"; form = form_3v; break; + case NEON_LD4_post: mnemonic = "ld4"; form = form_4v; break; + case NEON_ST1_1v_post: mnemonic = "st1"; form = form_1v; break; + case NEON_ST1_2v_post: mnemonic = "st1"; form = form_2v; break; + case NEON_ST1_3v_post: mnemonic = "st1"; form = form_3v; break; + case NEON_ST1_4v_post: mnemonic = "st1"; form = form_4v; break; + case NEON_ST2_post: mnemonic = "st2"; form = form_2v; break; + case NEON_ST3_post: mnemonic = "st3"; form = form_3v; break; + case NEON_ST4_post: mnemonic = "st4"; form = form_4v; break; + default: break; + } + + Format(instr, mnemonic, nfd.Substitute(form)); +} + + +void Disassembler::VisitNEONLoadStoreSingleStruct(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "(NEONLoadStoreSingleStruct)"; + + const char *form_1b = "{'Vt.b}['IVLSLane0], ['Xns]"; + const char *form_1h = "{'Vt.h}['IVLSLane1], ['Xns]"; + const char *form_1s = "{'Vt.s}['IVLSLane2], ['Xns]"; + const char *form_1d = "{'Vt.d}['IVLSLane3], ['Xns]"; + NEONFormatDecoder nfd(instr, NEONFormatDecoder::LoadStoreFormatMap()); + + switch (instr->Mask(NEONLoadStoreSingleStructMask)) { + case NEON_LD1_b: mnemonic = "ld1"; form = form_1b; break; + case NEON_LD1_h: mnemonic = "ld1"; form = form_1h; break; + case NEON_LD1_s: + mnemonic = "ld1"; + VIXL_STATIC_ASSERT((NEON_LD1_s | (1 << NEONLSSize_offset)) == NEON_LD1_d); + form = ((instr->NEONLSSize() & 1) == 0) ? form_1s : form_1d; + break; + case NEON_ST1_b: mnemonic = "st1"; form = form_1b; break; + case NEON_ST1_h: mnemonic = "st1"; form = form_1h; break; + case NEON_ST1_s: + mnemonic = "st1"; + VIXL_STATIC_ASSERT((NEON_ST1_s | (1 << NEONLSSize_offset)) == NEON_ST1_d); + form = ((instr->NEONLSSize() & 1) == 0) ? form_1s : form_1d; + break; + case NEON_LD1R: + mnemonic = "ld1r"; + form = "{'Vt.%s}, ['Xns]"; + break; + case NEON_LD2_b: + case NEON_ST2_b: + mnemonic = (instr->LdStXLoad() == 1) ? "ld2" : "st2"; + form = "{'Vt.b, 'Vt2.b}['IVLSLane0], ['Xns]"; + break; + case NEON_LD2_h: + case NEON_ST2_h: + mnemonic = (instr->LdStXLoad() == 1) ? "ld2" : "st2"; + form = "{'Vt.h, 'Vt2.h}['IVLSLane1], ['Xns]"; + break; + case NEON_LD2_s: + case NEON_ST2_s: + VIXL_STATIC_ASSERT((NEON_ST2_s | (1 << NEONLSSize_offset)) == NEON_ST2_d); + VIXL_STATIC_ASSERT((NEON_LD2_s | (1 << NEONLSSize_offset)) == NEON_LD2_d); + mnemonic = (instr->LdStXLoad() == 1) ? "ld2" : "st2"; + if ((instr->NEONLSSize() & 1) == 0) + form = "{'Vt.s, 'Vt2.s}['IVLSLane2], ['Xns]"; + else + form = "{'Vt.d, 'Vt2.d}['IVLSLane3], ['Xns]"; + break; + case NEON_LD2R: + mnemonic = "ld2r"; + form = "{'Vt.%s, 'Vt2.%s}, ['Xns]"; + break; + case NEON_LD3_b: + case NEON_ST3_b: + mnemonic = (instr->LdStXLoad() == 1) ? "ld3" : "st3"; + form = "{'Vt.b, 'Vt2.b, 'Vt3.b}['IVLSLane0], ['Xns]"; + break; + case NEON_LD3_h: + case NEON_ST3_h: + mnemonic = (instr->LdStXLoad() == 1) ? "ld3" : "st3"; + form = "{'Vt.h, 'Vt2.h, 'Vt3.h}['IVLSLane1], ['Xns]"; + break; + case NEON_LD3_s: + case NEON_ST3_s: + mnemonic = (instr->LdStXLoad() == 1) ? "ld3" : "st3"; + if ((instr->NEONLSSize() & 1) == 0) + form = "{'Vt.s, 'Vt2.s, 'Vt3.s}['IVLSLane2], ['Xns]"; + else + form = "{'Vt.d, 'Vt2.d, 'Vt3.d}['IVLSLane3], ['Xns]"; + break; + case NEON_LD3R: + mnemonic = "ld3r"; + form = "{'Vt.%s, 'Vt2.%s, 'Vt3.%s}, ['Xns]"; + break; + case NEON_LD4_b: + case NEON_ST4_b: + mnemonic = (instr->LdStXLoad() == 1) ? "ld4" : "st4"; + form = "{'Vt.b, 'Vt2.b, 'Vt3.b, 'Vt4.b}['IVLSLane0], ['Xns]"; + break; + case NEON_LD4_h: + case NEON_ST4_h: + mnemonic = (instr->LdStXLoad() == 1) ? "ld4" : "st4"; + form = "{'Vt.h, 'Vt2.h, 'Vt3.h, 'Vt4.h}['IVLSLane1], ['Xns]"; + break; + case NEON_LD4_s: + case NEON_ST4_s: + VIXL_STATIC_ASSERT((NEON_LD4_s | (1 << NEONLSSize_offset)) == NEON_LD4_d); + VIXL_STATIC_ASSERT((NEON_ST4_s | (1 << NEONLSSize_offset)) == NEON_ST4_d); + mnemonic = (instr->LdStXLoad() == 1) ? "ld4" : "st4"; + if ((instr->NEONLSSize() & 1) == 0) + form = "{'Vt.s, 'Vt2.s, 'Vt3.s, 'Vt4.s}['IVLSLane2], ['Xns]"; + else + form = "{'Vt.d, 'Vt2.d, 'Vt3.d, 'Vt4.d}['IVLSLane3], ['Xns]"; + break; + case NEON_LD4R: + mnemonic = "ld4r"; + form = "{'Vt.%1$s, 'Vt2.%1$s, 'Vt3.%1$s, 'Vt4.%1$s}, ['Xns]"; + break; + default: break; + } + + Format(instr, mnemonic, nfd.Substitute(form)); +} + + +void Disassembler::VisitNEONLoadStoreSingleStructPostIndex( + const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "(NEONLoadStoreSingleStructPostIndex)"; + + const char *form_1b = "{'Vt.b}['IVLSLane0], ['Xns], 'Xmb1"; + const char *form_1h = "{'Vt.h}['IVLSLane1], ['Xns], 'Xmb2"; + const char *form_1s = "{'Vt.s}['IVLSLane2], ['Xns], 'Xmb4"; + const char *form_1d = "{'Vt.d}['IVLSLane3], ['Xns], 'Xmb8"; + NEONFormatDecoder nfd(instr, NEONFormatDecoder::LoadStoreFormatMap()); + + switch (instr->Mask(NEONLoadStoreSingleStructPostIndexMask)) { + case NEON_LD1_b_post: mnemonic = "ld1"; form = form_1b; break; + case NEON_LD1_h_post: mnemonic = "ld1"; form = form_1h; break; + case NEON_LD1_s_post: + mnemonic = "ld1"; + VIXL_STATIC_ASSERT((NEON_LD1_s | (1 << NEONLSSize_offset)) == NEON_LD1_d); + form = ((instr->NEONLSSize() & 1) == 0) ? form_1s : form_1d; + break; + case NEON_ST1_b_post: mnemonic = "st1"; form = form_1b; break; + case NEON_ST1_h_post: mnemonic = "st1"; form = form_1h; break; + case NEON_ST1_s_post: + mnemonic = "st1"; + VIXL_STATIC_ASSERT((NEON_ST1_s | (1 << NEONLSSize_offset)) == NEON_ST1_d); + form = ((instr->NEONLSSize() & 1) == 0) ? form_1s : form_1d; + break; + case NEON_LD1R_post: + mnemonic = "ld1r"; + form = "{'Vt.%s}, ['Xns], 'Xmz1"; + break; + case NEON_LD2_b_post: + case NEON_ST2_b_post: + mnemonic = (instr->LdStXLoad() == 1) ? "ld2" : "st2"; + form = "{'Vt.b, 'Vt2.b}['IVLSLane0], ['Xns], 'Xmb2"; + break; + case NEON_ST2_h_post: + case NEON_LD2_h_post: + mnemonic = (instr->LdStXLoad() == 1) ? "ld2" : "st2"; + form = "{'Vt.h, 'Vt2.h}['IVLSLane1], ['Xns], 'Xmb4"; + break; + case NEON_LD2_s_post: + case NEON_ST2_s_post: + mnemonic = (instr->LdStXLoad() == 1) ? "ld2" : "st2"; + if ((instr->NEONLSSize() & 1) == 0) + form = "{'Vt.s, 'Vt2.s}['IVLSLane2], ['Xns], 'Xmb8"; + else + form = "{'Vt.d, 'Vt2.d}['IVLSLane3], ['Xns], 'Xmb16"; + break; + case NEON_LD2R_post: + mnemonic = "ld2r"; + form = "{'Vt.%s, 'Vt2.%s}, ['Xns], 'Xmz2"; + break; + case NEON_LD3_b_post: + case NEON_ST3_b_post: + mnemonic = (instr->LdStXLoad() == 1) ? "ld3" : "st3"; + form = "{'Vt.b, 'Vt2.b, 'Vt3.b}['IVLSLane0], ['Xns], 'Xmb3"; + break; + case NEON_LD3_h_post: + case NEON_ST3_h_post: + mnemonic = (instr->LdStXLoad() == 1) ? "ld3" : "st3"; + form = "{'Vt.h, 'Vt2.h, 'Vt3.h}['IVLSLane1], ['Xns], 'Xmb6"; + break; + case NEON_LD3_s_post: + case NEON_ST3_s_post: + mnemonic = (instr->LdStXLoad() == 1) ? "ld3" : "st3"; + if ((instr->NEONLSSize() & 1) == 0) + form = "{'Vt.s, 'Vt2.s, 'Vt3.s}['IVLSLane2], ['Xns], 'Xmb12"; + else + form = "{'Vt.d, 'Vt2.d, 'Vt3.d}['IVLSLane3], ['Xns], 'Xmr3"; + break; + case NEON_LD3R_post: + mnemonic = "ld3r"; + form = "{'Vt.%s, 'Vt2.%s, 'Vt3.%s}, ['Xns], 'Xmz3"; + break; + case NEON_LD4_b_post: + case NEON_ST4_b_post: + mnemonic = (instr->LdStXLoad() == 1) ? "ld4" : "st4"; + form = "{'Vt.b, 'Vt2.b, 'Vt3.b, 'Vt4.b}['IVLSLane0], ['Xns], 'Xmb4"; + break; + case NEON_LD4_h_post: + case NEON_ST4_h_post: + mnemonic = (instr->LdStXLoad()) == 1 ? "ld4" : "st4"; + form = "{'Vt.h, 'Vt2.h, 'Vt3.h, 'Vt4.h}['IVLSLane1], ['Xns], 'Xmb8"; + break; + case NEON_LD4_s_post: + case NEON_ST4_s_post: + mnemonic = (instr->LdStXLoad() == 1) ? "ld4" : "st4"; + if ((instr->NEONLSSize() & 1) == 0) + form = "{'Vt.s, 'Vt2.s, 'Vt3.s, 'Vt4.s}['IVLSLane2], ['Xns], 'Xmb16"; + else + form = "{'Vt.d, 'Vt2.d, 'Vt3.d, 'Vt4.d}['IVLSLane3], ['Xns], 'Xmb32"; + break; + case NEON_LD4R_post: + mnemonic = "ld4r"; + form = "{'Vt.%1$s, 'Vt2.%1$s, 'Vt3.%1$s, 'Vt4.%1$s}, ['Xns], 'Xmz4"; + break; + default: break; + } + + Format(instr, mnemonic, nfd.Substitute(form)); +} + + +void Disassembler::VisitNEONModifiedImmediate(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "'Vt.%s, 'IVMIImm8, lsl 'IVMIShiftAmt1"; + + int cmode = instr->NEONCmode(); + int cmode_3 = (cmode >> 3) & 1; + int cmode_2 = (cmode >> 2) & 1; + int cmode_1 = (cmode >> 1) & 1; + int cmode_0 = cmode & 1; + int q = instr->NEONQ(); + int op = instr->NEONModImmOp(); + + static const NEONFormatMap map_b = { {30}, {NF_8B, NF_16B} }; + static const NEONFormatMap map_h = { {30}, {NF_4H, NF_8H} }; + static const NEONFormatMap map_s = { {30}, {NF_2S, NF_4S} }; + NEONFormatDecoder nfd(instr, &map_b); + + if (cmode_3 == 0) { + if (cmode_0 == 0) { + mnemonic = (op == 1) ? "mvni" : "movi"; + } else { // cmode<0> == '1'. + mnemonic = (op == 1) ? "bic" : "orr"; + } + nfd.SetFormatMap(0, &map_s); + } else { // cmode<3> == '1'. + if (cmode_2 == 0) { + if (cmode_0 == 0) { + mnemonic = (op == 1) ? "mvni" : "movi"; + } else { // cmode<0> == '1'. + mnemonic = (op == 1) ? "bic" : "orr"; + } + nfd.SetFormatMap(0, &map_h); + } else { // cmode<2> == '1'. + if (cmode_1 == 0) { + mnemonic = (op == 1) ? "mvni" : "movi"; + form = "'Vt.%s, 'IVMIImm8, msl 'IVMIShiftAmt2"; + nfd.SetFormatMap(0, &map_s); + } else { // cmode<1> == '1'. + if (cmode_0 == 0) { + mnemonic = "movi"; + if (op == 0) { + form = "'Vt.%s, 'IVMIImm8"; + } else { + form = (q == 0) ? "'Dd, 'IVMIImm" : "'Vt.2d, 'IVMIImm"; + } + } else { // cmode<0> == '1' + mnemonic = "fmov"; + if (op == 0) { + form = "'Vt.%s, 'IVMIImmFPSingle"; + nfd.SetFormatMap(0, &map_s); + } else { + if (q == 1) { + form = "'Vt.2d, 'IVMIImmFPDouble"; + } + } + } + } + } + } + Format(instr, mnemonic, nfd.Substitute(form)); +} + + +void Disassembler::VisitNEONScalar2RegMisc(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "%sd, %sn"; + const char *form_0 = "%sd, %sn, #0"; + const char *form_fp0 = "%sd, %sn, #0.0"; + + NEONFormatDecoder nfd(instr, NEONFormatDecoder::ScalarFormatMap()); + + if (instr->Mask(NEON2RegMiscOpcode) <= NEON_NEG_scalar_opcode) { + // These instructions all use a two bit size field, except NOT and RBIT, + // which use the field to encode the operation. + switch (instr->Mask(NEONScalar2RegMiscMask)) { + case NEON_CMGT_zero_scalar: mnemonic = "cmgt"; form = form_0; break; + case NEON_CMGE_zero_scalar: mnemonic = "cmge"; form = form_0; break; + case NEON_CMLE_zero_scalar: mnemonic = "cmle"; form = form_0; break; + case NEON_CMLT_zero_scalar: mnemonic = "cmlt"; form = form_0; break; + case NEON_CMEQ_zero_scalar: mnemonic = "cmeq"; form = form_0; break; + case NEON_NEG_scalar: mnemonic = "neg"; break; + case NEON_SQNEG_scalar: mnemonic = "sqneg"; break; + case NEON_ABS_scalar: mnemonic = "abs"; break; + case NEON_SQABS_scalar: mnemonic = "sqabs"; break; + case NEON_SUQADD_scalar: mnemonic = "suqadd"; break; + case NEON_USQADD_scalar: mnemonic = "usqadd"; break; + default: form = "(NEONScalar2RegMisc)"; + } + } else { + // These instructions all use a one bit size field, except SQXTUN, SQXTN + // and UQXTN, which use a two bit size field. + nfd.SetFormatMaps(nfd.FPScalarFormatMap()); + switch (instr->Mask(NEONScalar2RegMiscFPMask)) { + case NEON_FRSQRTE_scalar: mnemonic = "frsqrte"; break; + case NEON_FRECPE_scalar: mnemonic = "frecpe"; break; + case NEON_SCVTF_scalar: mnemonic = "scvtf"; break; + case NEON_UCVTF_scalar: mnemonic = "ucvtf"; break; + case NEON_FCMGT_zero_scalar: mnemonic = "fcmgt"; form = form_fp0; break; + case NEON_FCMGE_zero_scalar: mnemonic = "fcmge"; form = form_fp0; break; + case NEON_FCMLE_zero_scalar: mnemonic = "fcmle"; form = form_fp0; break; + case NEON_FCMLT_zero_scalar: mnemonic = "fcmlt"; form = form_fp0; break; + case NEON_FCMEQ_zero_scalar: mnemonic = "fcmeq"; form = form_fp0; break; + case NEON_FRECPX_scalar: mnemonic = "frecpx"; break; + case NEON_FCVTNS_scalar: mnemonic = "fcvtns"; break; + case NEON_FCVTNU_scalar: mnemonic = "fcvtnu"; break; + case NEON_FCVTPS_scalar: mnemonic = "fcvtps"; break; + case NEON_FCVTPU_scalar: mnemonic = "fcvtpu"; break; + case NEON_FCVTMS_scalar: mnemonic = "fcvtms"; break; + case NEON_FCVTMU_scalar: mnemonic = "fcvtmu"; break; + case NEON_FCVTZS_scalar: mnemonic = "fcvtzs"; break; + case NEON_FCVTZU_scalar: mnemonic = "fcvtzu"; break; + case NEON_FCVTAS_scalar: mnemonic = "fcvtas"; break; + case NEON_FCVTAU_scalar: mnemonic = "fcvtau"; break; + case NEON_FCVTXN_scalar: + nfd.SetFormatMap(0, nfd.LongScalarFormatMap()); + mnemonic = "fcvtxn"; + break; + default: + nfd.SetFormatMap(0, nfd.ScalarFormatMap()); + nfd.SetFormatMap(1, nfd.LongScalarFormatMap()); + switch (instr->Mask(NEONScalar2RegMiscMask)) { + case NEON_SQXTN_scalar: mnemonic = "sqxtn"; break; + case NEON_UQXTN_scalar: mnemonic = "uqxtn"; break; + case NEON_SQXTUN_scalar: mnemonic = "sqxtun"; break; + default: form = "(NEONScalar2RegMisc)"; + } + } + } + Format(instr, mnemonic, nfd.SubstitutePlaceholders(form)); +} + + +void Disassembler::VisitNEONScalar3Diff(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "%sd, %sn, %sm"; + NEONFormatDecoder nfd(instr, NEONFormatDecoder::LongScalarFormatMap(), + NEONFormatDecoder::ScalarFormatMap()); + + switch (instr->Mask(NEONScalar3DiffMask)) { + case NEON_SQDMLAL_scalar : mnemonic = "sqdmlal"; break; + case NEON_SQDMLSL_scalar : mnemonic = "sqdmlsl"; break; + case NEON_SQDMULL_scalar : mnemonic = "sqdmull"; break; + default: form = "(NEONScalar3Diff)"; + } + Format(instr, mnemonic, nfd.SubstitutePlaceholders(form)); +} + + +void Disassembler::VisitNEONScalar3Same(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "%sd, %sn, %sm"; + NEONFormatDecoder nfd(instr, NEONFormatDecoder::ScalarFormatMap()); + + if (instr->Mask(NEONScalar3SameFPFMask) == NEONScalar3SameFPFixed) { + nfd.SetFormatMaps(nfd.FPScalarFormatMap()); + switch (instr->Mask(NEONScalar3SameFPMask)) { + case NEON_FACGE_scalar: mnemonic = "facge"; break; + case NEON_FACGT_scalar: mnemonic = "facgt"; break; + case NEON_FCMEQ_scalar: mnemonic = "fcmeq"; break; + case NEON_FCMGE_scalar: mnemonic = "fcmge"; break; + case NEON_FCMGT_scalar: mnemonic = "fcmgt"; break; + case NEON_FMULX_scalar: mnemonic = "fmulx"; break; + case NEON_FRECPS_scalar: mnemonic = "frecps"; break; + case NEON_FRSQRTS_scalar: mnemonic = "frsqrts"; break; + case NEON_FABD_scalar: mnemonic = "fabd"; break; + default: form = "(NEONScalar3Same)"; + } + } else { + switch (instr->Mask(NEONScalar3SameMask)) { + case NEON_ADD_scalar: mnemonic = "add"; break; + case NEON_SUB_scalar: mnemonic = "sub"; break; + case NEON_CMEQ_scalar: mnemonic = "cmeq"; break; + case NEON_CMGE_scalar: mnemonic = "cmge"; break; + case NEON_CMGT_scalar: mnemonic = "cmgt"; break; + case NEON_CMHI_scalar: mnemonic = "cmhi"; break; + case NEON_CMHS_scalar: mnemonic = "cmhs"; break; + case NEON_CMTST_scalar: mnemonic = "cmtst"; break; + case NEON_UQADD_scalar: mnemonic = "uqadd"; break; + case NEON_SQADD_scalar: mnemonic = "sqadd"; break; + case NEON_UQSUB_scalar: mnemonic = "uqsub"; break; + case NEON_SQSUB_scalar: mnemonic = "sqsub"; break; + case NEON_USHL_scalar: mnemonic = "ushl"; break; + case NEON_SSHL_scalar: mnemonic = "sshl"; break; + case NEON_UQSHL_scalar: mnemonic = "uqshl"; break; + case NEON_SQSHL_scalar: mnemonic = "sqshl"; break; + case NEON_URSHL_scalar: mnemonic = "urshl"; break; + case NEON_SRSHL_scalar: mnemonic = "srshl"; break; + case NEON_UQRSHL_scalar: mnemonic = "uqrshl"; break; + case NEON_SQRSHL_scalar: mnemonic = "sqrshl"; break; + case NEON_SQDMULH_scalar: mnemonic = "sqdmulh"; break; + case NEON_SQRDMULH_scalar: mnemonic = "sqrdmulh"; break; + default: form = "(NEONScalar3Same)"; + } + } + Format(instr, mnemonic, nfd.SubstitutePlaceholders(form)); +} + + +void Disassembler::VisitNEONScalarByIndexedElement(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "%sd, %sn, 'Ve.%s['IVByElemIndex]"; + NEONFormatDecoder nfd(instr, NEONFormatDecoder::ScalarFormatMap()); + bool long_instr = false; + + switch (instr->Mask(NEONScalarByIndexedElementMask)) { + case NEON_SQDMULL_byelement_scalar: + mnemonic = "sqdmull"; + long_instr = true; + break; + case NEON_SQDMLAL_byelement_scalar: + mnemonic = "sqdmlal"; + long_instr = true; + break; + case NEON_SQDMLSL_byelement_scalar: + mnemonic = "sqdmlsl"; + long_instr = true; + break; + case NEON_SQDMULH_byelement_scalar: + mnemonic = "sqdmulh"; + break; + case NEON_SQRDMULH_byelement_scalar: + mnemonic = "sqrdmulh"; + break; + default: + nfd.SetFormatMap(0, nfd.FPScalarFormatMap()); + switch (instr->Mask(NEONScalarByIndexedElementFPMask)) { + case NEON_FMUL_byelement_scalar: mnemonic = "fmul"; break; + case NEON_FMLA_byelement_scalar: mnemonic = "fmla"; break; + case NEON_FMLS_byelement_scalar: mnemonic = "fmls"; break; + case NEON_FMULX_byelement_scalar: mnemonic = "fmulx"; break; + default: form = "(NEONScalarByIndexedElement)"; + } + } + + if (long_instr) { + nfd.SetFormatMap(0, nfd.LongScalarFormatMap()); + } + + Format(instr, mnemonic, nfd.Substitute( + form, nfd.kPlaceholder, nfd.kPlaceholder, nfd.kFormat)); +} + + +void Disassembler::VisitNEONScalarCopy(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "(NEONScalarCopy)"; + + NEONFormatDecoder nfd(instr, NEONFormatDecoder::TriangularScalarFormatMap()); + + if (instr->Mask(NEONScalarCopyMask) == NEON_DUP_ELEMENT_scalar) { + mnemonic = "mov"; + form = "%sd, 'Vn.%s['IVInsIndex1]"; + } + + Format(instr, mnemonic, nfd.Substitute(form, nfd.kPlaceholder, nfd.kFormat)); +} + + +void Disassembler::VisitNEONScalarPairwise(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "%sd, 'Vn.%s"; + NEONFormatMap map = { {22}, {NF_2S, NF_2D} }; + NEONFormatDecoder nfd(instr, NEONFormatDecoder::FPScalarFormatMap(), &map); + + switch (instr->Mask(NEONScalarPairwiseMask)) { + case NEON_ADDP_scalar: mnemonic = "addp"; break; + case NEON_FADDP_scalar: mnemonic = "faddp"; break; + case NEON_FMAXP_scalar: mnemonic = "fmaxp"; break; + case NEON_FMAXNMP_scalar: mnemonic = "fmaxnmp"; break; + case NEON_FMINP_scalar: mnemonic = "fminp"; break; + case NEON_FMINNMP_scalar: mnemonic = "fminnmp"; break; + default: form = "(NEONScalarPairwise)"; + } + Format(instr, mnemonic, nfd.Substitute(form, + NEONFormatDecoder::kPlaceholder, NEONFormatDecoder::kFormat)); +} + + +void Disassembler::VisitNEONScalarShiftImmediate(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "%sd, %sn, 'Is1"; + const char *form_2 = "%sd, %sn, 'Is2"; + + static const NEONFormatMap map_shift = { + {22, 21, 20, 19}, + {NF_UNDEF, NF_B, NF_H, NF_H, NF_S, NF_S, NF_S, NF_S, + NF_D, NF_D, NF_D, NF_D, NF_D, NF_D, NF_D, NF_D} + }; + static const NEONFormatMap map_shift_narrow = { + {21, 20, 19}, + {NF_UNDEF, NF_H, NF_S, NF_S, NF_D, NF_D, NF_D, NF_D} + }; + NEONFormatDecoder nfd(instr, &map_shift); + + if (instr->ImmNEONImmh()) { // immh has to be non-zero. + switch (instr->Mask(NEONScalarShiftImmediateMask)) { + case NEON_FCVTZU_imm_scalar: mnemonic = "fcvtzu"; break; + case NEON_FCVTZS_imm_scalar: mnemonic = "fcvtzs"; break; + case NEON_SCVTF_imm_scalar: mnemonic = "scvtf"; break; + case NEON_UCVTF_imm_scalar: mnemonic = "ucvtf"; break; + case NEON_SRI_scalar: mnemonic = "sri"; break; + case NEON_SSHR_scalar: mnemonic = "sshr"; break; + case NEON_USHR_scalar: mnemonic = "ushr"; break; + case NEON_SRSHR_scalar: mnemonic = "srshr"; break; + case NEON_URSHR_scalar: mnemonic = "urshr"; break; + case NEON_SSRA_scalar: mnemonic = "ssra"; break; + case NEON_USRA_scalar: mnemonic = "usra"; break; + case NEON_SRSRA_scalar: mnemonic = "srsra"; break; + case NEON_URSRA_scalar: mnemonic = "ursra"; break; + case NEON_SHL_scalar: mnemonic = "shl"; form = form_2; break; + case NEON_SLI_scalar: mnemonic = "sli"; form = form_2; break; + case NEON_SQSHLU_scalar: mnemonic = "sqshlu"; form = form_2; break; + case NEON_SQSHL_imm_scalar: mnemonic = "sqshl"; form = form_2; break; + case NEON_UQSHL_imm_scalar: mnemonic = "uqshl"; form = form_2; break; + case NEON_UQSHRN_scalar: + mnemonic = "uqshrn"; + nfd.SetFormatMap(1, &map_shift_narrow); + break; + case NEON_UQRSHRN_scalar: + mnemonic = "uqrshrn"; + nfd.SetFormatMap(1, &map_shift_narrow); + break; + case NEON_SQSHRN_scalar: + mnemonic = "sqshrn"; + nfd.SetFormatMap(1, &map_shift_narrow); + break; + case NEON_SQRSHRN_scalar: + mnemonic = "sqrshrn"; + nfd.SetFormatMap(1, &map_shift_narrow); + break; + case NEON_SQSHRUN_scalar: + mnemonic = "sqshrun"; + nfd.SetFormatMap(1, &map_shift_narrow); + break; + case NEON_SQRSHRUN_scalar: + mnemonic = "sqrshrun"; + nfd.SetFormatMap(1, &map_shift_narrow); + break; + default: + form = "(NEONScalarShiftImmediate)"; + } + } else { + form = "(NEONScalarShiftImmediate)"; + } + Format(instr, mnemonic, nfd.SubstitutePlaceholders(form)); +} + + +void Disassembler::VisitNEONShiftImmediate(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "'Vd.%s, 'Vn.%s, 'Is1"; + const char *form_shift_2 = "'Vd.%s, 'Vn.%s, 'Is2"; + const char *form_xtl = "'Vd.%s, 'Vn.%s"; + + // 0001->8H, 001x->4S, 01xx->2D, all others undefined. + static const NEONFormatMap map_shift_ta = { + {22, 21, 20, 19}, + {NF_UNDEF, NF_8H, NF_4S, NF_4S, NF_2D, NF_2D, NF_2D, NF_2D} + }; + + // 00010->8B, 00011->16B, 001x0->4H, 001x1->8H, + // 01xx0->2S, 01xx1->4S, 1xxx1->2D, all others undefined. + static const NEONFormatMap map_shift_tb = { + {22, 21, 20, 19, 30}, + {NF_UNDEF, NF_UNDEF, NF_8B, NF_16B, NF_4H, NF_8H, NF_4H, NF_8H, + NF_2S, NF_4S, NF_2S, NF_4S, NF_2S, NF_4S, NF_2S, NF_4S, + NF_UNDEF, NF_2D, NF_UNDEF, NF_2D, NF_UNDEF, NF_2D, NF_UNDEF, NF_2D, + NF_UNDEF, NF_2D, NF_UNDEF, NF_2D, NF_UNDEF, NF_2D, NF_UNDEF, NF_2D} + }; + + NEONFormatDecoder nfd(instr, &map_shift_tb); + + if (instr->ImmNEONImmh()) { // immh has to be non-zero. + switch (instr->Mask(NEONShiftImmediateMask)) { + case NEON_SQSHLU: mnemonic = "sqshlu"; form = form_shift_2; break; + case NEON_SQSHL_imm: mnemonic = "sqshl"; form = form_shift_2; break; + case NEON_UQSHL_imm: mnemonic = "uqshl"; form = form_shift_2; break; + case NEON_SHL: mnemonic = "shl"; form = form_shift_2; break; + case NEON_SLI: mnemonic = "sli"; form = form_shift_2; break; + case NEON_SCVTF_imm: mnemonic = "scvtf"; break; + case NEON_UCVTF_imm: mnemonic = "ucvtf"; break; + case NEON_FCVTZU_imm: mnemonic = "fcvtzu"; break; + case NEON_FCVTZS_imm: mnemonic = "fcvtzs"; break; + case NEON_SRI: mnemonic = "sri"; break; + case NEON_SSHR: mnemonic = "sshr"; break; + case NEON_USHR: mnemonic = "ushr"; break; + case NEON_SRSHR: mnemonic = "srshr"; break; + case NEON_URSHR: mnemonic = "urshr"; break; + case NEON_SSRA: mnemonic = "ssra"; break; + case NEON_USRA: mnemonic = "usra"; break; + case NEON_SRSRA: mnemonic = "srsra"; break; + case NEON_URSRA: mnemonic = "ursra"; break; + case NEON_SHRN: + mnemonic = instr->Mask(NEON_Q) ? "shrn2" : "shrn"; + nfd.SetFormatMap(1, &map_shift_ta); + break; + case NEON_RSHRN: + mnemonic = instr->Mask(NEON_Q) ? "rshrn2" : "rshrn"; + nfd.SetFormatMap(1, &map_shift_ta); + break; + case NEON_UQSHRN: + mnemonic = instr->Mask(NEON_Q) ? "uqshrn2" : "uqshrn"; + nfd.SetFormatMap(1, &map_shift_ta); + break; + case NEON_UQRSHRN: + mnemonic = instr->Mask(NEON_Q) ? "uqrshrn2" : "uqrshrn"; + nfd.SetFormatMap(1, &map_shift_ta); + break; + case NEON_SQSHRN: + mnemonic = instr->Mask(NEON_Q) ? "sqshrn2" : "sqshrn"; + nfd.SetFormatMap(1, &map_shift_ta); + break; + case NEON_SQRSHRN: + mnemonic = instr->Mask(NEON_Q) ? "sqrshrn2" : "sqrshrn"; + nfd.SetFormatMap(1, &map_shift_ta); + break; + case NEON_SQSHRUN: + mnemonic = instr->Mask(NEON_Q) ? "sqshrun2" : "sqshrun"; + nfd.SetFormatMap(1, &map_shift_ta); + break; + case NEON_SQRSHRUN: + mnemonic = instr->Mask(NEON_Q) ? "sqrshrun2" : "sqrshrun"; + nfd.SetFormatMap(1, &map_shift_ta); + break; + case NEON_SSHLL: + nfd.SetFormatMap(0, &map_shift_ta); + if (instr->ImmNEONImmb() == 0 && + CountSetBits(instr->ImmNEONImmh(), 32) == 1) { // sxtl variant. + form = form_xtl; + mnemonic = instr->Mask(NEON_Q) ? "sxtl2" : "sxtl"; + } else { // sshll variant. + form = form_shift_2; + mnemonic = instr->Mask(NEON_Q) ? "sshll2" : "sshll"; + } + break; + case NEON_USHLL: + nfd.SetFormatMap(0, &map_shift_ta); + if (instr->ImmNEONImmb() == 0 && + CountSetBits(instr->ImmNEONImmh(), 32) == 1) { // uxtl variant. + form = form_xtl; + mnemonic = instr->Mask(NEON_Q) ? "uxtl2" : "uxtl"; + } else { // ushll variant. + form = form_shift_2; + mnemonic = instr->Mask(NEON_Q) ? "ushll2" : "ushll"; + } + break; + default: form = "(NEONShiftImmediate)"; + } + } else { + form = "(NEONShiftImmediate)"; + } + Format(instr, mnemonic, nfd.Substitute(form)); +} + + +void Disassembler::VisitNEONTable(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "(NEONTable)"; + const char form_1v[] = "'Vd.%%s, {'Vn.16b}, 'Vm.%%s"; + const char form_2v[] = "'Vd.%%s, {'Vn.16b, v%d.16b}, 'Vm.%%s"; + const char form_3v[] = "'Vd.%%s, {'Vn.16b, v%d.16b, v%d.16b}, 'Vm.%%s"; + const char form_4v[] = + "'Vd.%%s, {'Vn.16b, v%d.16b, v%d.16b, v%d.16b}, 'Vm.%%s"; + static const NEONFormatMap map_b = { {30}, {NF_8B, NF_16B} }; + NEONFormatDecoder nfd(instr, &map_b); + + switch (instr->Mask(NEONTableMask)) { + case NEON_TBL_1v: mnemonic = "tbl"; form = form_1v; break; + case NEON_TBL_2v: mnemonic = "tbl"; form = form_2v; break; + case NEON_TBL_3v: mnemonic = "tbl"; form = form_3v; break; + case NEON_TBL_4v: mnemonic = "tbl"; form = form_4v; break; + case NEON_TBX_1v: mnemonic = "tbx"; form = form_1v; break; + case NEON_TBX_2v: mnemonic = "tbx"; form = form_2v; break; + case NEON_TBX_3v: mnemonic = "tbx"; form = form_3v; break; + case NEON_TBX_4v: mnemonic = "tbx"; form = form_4v; break; + default: break; + } + + char re_form[sizeof(form_4v) + 6]; + int reg_num = instr->Rn(); + snprintf(re_form, sizeof(re_form), form, + (reg_num + 1) % kNumberOfVRegisters, + (reg_num + 2) % kNumberOfVRegisters, + (reg_num + 3) % kNumberOfVRegisters); + + Format(instr, mnemonic, nfd.Substitute(re_form)); +} + + +void Disassembler::VisitNEONPerm(const Instruction* instr) { + const char *mnemonic = "unimplemented"; + const char *form = "'Vd.%s, 'Vn.%s, 'Vm.%s"; + NEONFormatDecoder nfd(instr); + + switch (instr->Mask(NEONPermMask)) { + case NEON_TRN1: mnemonic = "trn1"; break; + case NEON_TRN2: mnemonic = "trn2"; break; + case NEON_UZP1: mnemonic = "uzp1"; break; + case NEON_UZP2: mnemonic = "uzp2"; break; + case NEON_ZIP1: mnemonic = "zip1"; break; + case NEON_ZIP2: mnemonic = "zip2"; break; + default: form = "(NEONPerm)"; + } + Format(instr, mnemonic, nfd.Substitute(form)); +} + + +void Disassembler::VisitUnimplemented(const Instruction* instr) { + Format(instr, "unimplemented", "(Unimplemented)"); +} + + +void Disassembler::VisitUnallocated(const Instruction* instr) { + Format(instr, "unallocated", "(Unallocated)"); +} + + +void Disassembler::ProcessOutput(const Instruction* /*instr*/) { + // The base disasm does nothing more than disassembling into a buffer. +} + + +void Disassembler::AppendRegisterNameToOutput(const Instruction* instr, + const CPURegister& reg) { + USE(instr); + VIXL_ASSERT(reg.IsValid()); + char reg_char; + + if (reg.IsRegister()) { + reg_char = reg.Is64Bits() ? 'x' : 'w'; + } else { + VIXL_ASSERT(reg.IsVRegister()); + switch (reg.SizeInBits()) { + case kBRegSize: reg_char = 'b'; break; + case kHRegSize: reg_char = 'h'; break; + case kSRegSize: reg_char = 's'; break; + case kDRegSize: reg_char = 'd'; break; + default: + VIXL_ASSERT(reg.Is128Bits()); + reg_char = 'q'; + } + } + + if (reg.IsVRegister() || !(reg.Aliases(sp) || reg.Aliases(xzr))) { + // A core or scalar/vector register: [wx]0 - 30, [bhsdq]0 - 31. + AppendToOutput("%c%d", reg_char, reg.code()); + } else if (reg.Aliases(sp)) { + // Disassemble w31/x31 as stack pointer wsp/sp. + AppendToOutput("%s", reg.Is64Bits() ? "sp" : "wsp"); + } else { + // Disassemble w31/x31 as zero register wzr/xzr. + AppendToOutput("%czr", reg_char); + } +} + + +void Disassembler::AppendPCRelativeOffsetToOutput(const Instruction* instr, + int64_t offset) { + USE(instr); + uint64_t abs_offset = offset; + char sign = (offset < 0) ? '-' : '+'; + if (offset < 0) { + abs_offset = -abs_offset; + } + AppendToOutput("#%c0x%" PRIx64, sign, abs_offset); +} + + +void Disassembler::AppendAddressToOutput(const Instruction* instr, + const void* addr) { + USE(instr); + AppendToOutput("(addr 0x%" PRIxPTR ")", reinterpret_cast<uintptr_t>(addr)); +} + + +void Disassembler::AppendCodeAddressToOutput(const Instruction* instr, + const void* addr) { + AppendAddressToOutput(instr, addr); +} + + +void Disassembler::AppendDataAddressToOutput(const Instruction* instr, + const void* addr) { + AppendAddressToOutput(instr, addr); +} + + +void Disassembler::AppendCodeRelativeAddressToOutput(const Instruction* instr, + const void* addr) { + USE(instr); + int64_t rel_addr = CodeRelativeAddress(addr); + if (rel_addr >= 0) { + AppendToOutput("(addr 0x%" PRIx64 ")", rel_addr); + } else { + AppendToOutput("(addr -0x%" PRIx64 ")", -rel_addr); + } +} + + +void Disassembler::AppendCodeRelativeCodeAddressToOutput( + const Instruction* instr, const void* addr) { + AppendCodeRelativeAddressToOutput(instr, addr); +} + + +void Disassembler::AppendCodeRelativeDataAddressToOutput( + const Instruction* instr, const void* addr) { + AppendCodeRelativeAddressToOutput(instr, addr); +} + + +void Disassembler::MapCodeAddress(int64_t base_address, + const Instruction* instr_address) { + set_code_address_offset( + base_address - reinterpret_cast<intptr_t>(instr_address)); +} +int64_t Disassembler::CodeRelativeAddress(const void* addr) { + return reinterpret_cast<intptr_t>(addr) + code_address_offset(); +} + + +void Disassembler::Format(const Instruction* instr, const char* mnemonic, + const char* format) { + VIXL_ASSERT(mnemonic != NULL); + ResetOutput(); + Substitute(instr, mnemonic); + if (format != NULL) { + VIXL_ASSERT(buffer_pos_ < buffer_size_); + buffer_[buffer_pos_++] = ' '; + Substitute(instr, format); + } + VIXL_ASSERT(buffer_pos_ < buffer_size_); + buffer_[buffer_pos_] = 0; + ProcessOutput(instr); +} + + +void Disassembler::Substitute(const Instruction* instr, const char* string) { + char chr = *string++; + while (chr != '\0') { + if (chr == '\'') { + string += SubstituteField(instr, string); + } else { + VIXL_ASSERT(buffer_pos_ < buffer_size_); + buffer_[buffer_pos_++] = chr; + } + chr = *string++; + } +} + + +int Disassembler::SubstituteField(const Instruction* instr, + const char* format) { + switch (format[0]) { + // NB. The remaining substitution prefix characters are: GJKUZ. + case 'R': // Register. X or W, selected by sf bit. + case 'F': // FP register. S or D, selected by type field. + case 'V': // Vector register, V, vector format. + case 'W': + case 'X': + case 'B': + case 'H': + case 'S': + case 'D': + case 'Q': return SubstituteRegisterField(instr, format); + case 'I': return SubstituteImmediateField(instr, format); + case 'L': return SubstituteLiteralField(instr, format); + case 'N': return SubstituteShiftField(instr, format); + case 'P': return SubstitutePrefetchField(instr, format); + case 'C': return SubstituteConditionField(instr, format); + case 'E': return SubstituteExtendField(instr, format); + case 'A': return SubstitutePCRelAddressField(instr, format); + case 'T': return SubstituteBranchTargetField(instr, format); + case 'O': return SubstituteLSRegOffsetField(instr, format); + case 'M': return SubstituteBarrierField(instr, format); + case 'K': return SubstituteCrField(instr, format); + case 'G': return SubstituteSysOpField(instr, format); + default: { + VIXL_UNREACHABLE(); + return 1; + } + } +} + + +int Disassembler::SubstituteRegisterField(const Instruction* instr, + const char* format) { + char reg_prefix = format[0]; + unsigned reg_num = 0; + unsigned field_len = 2; + + switch (format[1]) { + case 'd': + reg_num = instr->Rd(); + if (format[2] == 'q') { + reg_prefix = instr->NEONQ() ? 'X' : 'W'; + field_len = 3; + } + break; + case 'n': reg_num = instr->Rn(); break; + case 'm': + reg_num = instr->Rm(); + switch (format[2]) { + // Handle registers tagged with b (bytes), z (instruction), or + // r (registers), used for address updates in + // NEON load/store instructions. + case 'r': + case 'b': + case 'z': { + field_len = 3; + char* eimm; + int imm = static_cast<int>(strtol(&format[3], &eimm, 10)); + field_len += eimm - &format[3]; + if (reg_num == 31) { + switch (format[2]) { + case 'z': + imm *= (1 << instr->NEONLSSize()); + break; + case 'r': + imm *= (instr->NEONQ() == 0) ? kDRegSizeInBytes + : kQRegSizeInBytes; + break; + case 'b': + break; + } + AppendToOutput("#%d", imm); + return field_len; + } + break; + } + } + break; + case 'e': + // This is register Rm, but using a 4-bit specifier. Used in NEON + // by-element instructions. + reg_num = (instr->Rm() & 0xf); + break; + case 'a': reg_num = instr->Ra(); break; + case 's': reg_num = instr->Rs(); break; + case 't': + reg_num = instr->Rt(); + if (format[0] == 'V') { + if ((format[2] >= '2') && (format[2] <= '4')) { + // Handle consecutive vector register specifiers Vt2, Vt3 and Vt4. + reg_num = (reg_num + format[2] - '1') % 32; + field_len = 3; + } + } else { + if (format[2] == '2') { + // Handle register specifier Rt2. + reg_num = instr->Rt2(); + field_len = 3; + } + } + break; + default: VIXL_UNREACHABLE(); + } + + // Increase field length for registers tagged as stack. + if (format[2] == 's') { + field_len = 3; + } + + CPURegister::RegisterType reg_type = CPURegister::kRegister; + unsigned reg_size = kXRegSize; + + if (reg_prefix == 'R') { + reg_prefix = instr->SixtyFourBits() ? 'X' : 'W'; + } else if (reg_prefix == 'F') { + reg_prefix = ((instr->FPType() & 1) == 0) ? 'S' : 'D'; + } + + switch (reg_prefix) { + case 'W': + reg_type = CPURegister::kRegister; reg_size = kWRegSize; break; + case 'X': + reg_type = CPURegister::kRegister; reg_size = kXRegSize; break; + case 'B': + reg_type = CPURegister::kVRegister; reg_size = kBRegSize; break; + case 'H': + reg_type = CPURegister::kVRegister; reg_size = kHRegSize; break; + case 'S': + reg_type = CPURegister::kVRegister; reg_size = kSRegSize; break; + case 'D': + reg_type = CPURegister::kVRegister; reg_size = kDRegSize; break; + case 'Q': + reg_type = CPURegister::kVRegister; reg_size = kQRegSize; break; + case 'V': + AppendToOutput("v%d", reg_num); + return field_len; + default: + VIXL_UNREACHABLE(); + } + + if ((reg_type == CPURegister::kRegister) && + (reg_num == kZeroRegCode) && (format[2] == 's')) { + reg_num = kSPRegInternalCode; + } + + AppendRegisterNameToOutput(instr, CPURegister(reg_num, reg_size, reg_type)); + + return field_len; +} + + +int Disassembler::SubstituteImmediateField(const Instruction* instr, + const char* format) { + VIXL_ASSERT(format[0] == 'I'); + + switch (format[1]) { + case 'M': { // IMoveImm, IMoveNeg or IMoveLSL. + if (format[5] == 'L') { + AppendToOutput("#0x%" PRIx32, instr->ImmMoveWide()); + if (instr->ShiftMoveWide() > 0) { + AppendToOutput(", lsl #%" PRId32, 16 * instr->ShiftMoveWide()); + } + } else { + VIXL_ASSERT((format[5] == 'I') || (format[5] == 'N')); + uint64_t imm = static_cast<uint64_t>(instr->ImmMoveWide()) << + (16 * instr->ShiftMoveWide()); + if (format[5] == 'N') + imm = ~imm; + if (!instr->SixtyFourBits()) + imm &= UINT64_C(0xffffffff); + AppendToOutput("#0x%" PRIx64, imm); + } + return 8; + } + case 'L': { + switch (format[2]) { + case 'L': { // ILLiteral - Immediate Load Literal. + AppendToOutput("pc%+" PRId32, + instr->ImmLLiteral() << kLiteralEntrySizeLog2); + return 9; + } + case 'S': { // ILS - Immediate Load/Store. + if (instr->ImmLS() != 0) { + AppendToOutput(", #%" PRId32, instr->ImmLS()); + } + return 3; + } + case 'P': { // ILPx - Immediate Load/Store Pair, x = access size. + if (instr->ImmLSPair() != 0) { + // format[3] is the scale value. Convert to a number. + int scale = 1 << (format[3] - '0'); + AppendToOutput(", #%" PRId32, instr->ImmLSPair() * scale); + } + return 4; + } + case 'U': { // ILU - Immediate Load/Store Unsigned. + if (instr->ImmLSUnsigned() != 0) { + int shift = instr->SizeLS(); + AppendToOutput(", #%" PRId32, instr->ImmLSUnsigned() << shift); + } + return 3; + } + } + } + case 'C': { // ICondB - Immediate Conditional Branch. + int64_t offset = instr->ImmCondBranch() << 2; + AppendPCRelativeOffsetToOutput(instr, offset); + return 6; + } + case 'A': { // IAddSub. + VIXL_ASSERT(instr->ShiftAddSub() <= 1); + int64_t imm = instr->ImmAddSub() << (12 * instr->ShiftAddSub()); + AppendToOutput("#0x%" PRIx64 " (%" PRId64 ")", imm, imm); + return 7; + } + case 'F': { // IFPSingle, IFPDouble or IFPFBits. + if (format[3] == 'F') { // IFPFbits. + AppendToOutput("#%" PRId32, 64 - instr->FPScale()); + return 8; + } else { + AppendToOutput("#0x%" PRIx32 " (%.4f)", instr->ImmFP(), + format[3] == 'S' ? instr->ImmFP32() : instr->ImmFP64()); + return 9; + } + } + case 'T': { // ITri - Immediate Triangular Encoded. + AppendToOutput("#0x%" PRIx64, instr->ImmLogical()); + return 4; + } + case 'N': { // INzcv. + int nzcv = (instr->Nzcv() << Flags_offset); + AppendToOutput("#%c%c%c%c", ((nzcv & NFlag) == 0) ? 'n' : 'N', + ((nzcv & ZFlag) == 0) ? 'z' : 'Z', + ((nzcv & CFlag) == 0) ? 'c' : 'C', + ((nzcv & VFlag) == 0) ? 'v' : 'V'); + return 5; + } + case 'P': { // IP - Conditional compare. + AppendToOutput("#%" PRId32, instr->ImmCondCmp()); + return 2; + } + case 'B': { // Bitfields. + return SubstituteBitfieldImmediateField(instr, format); + } + case 'E': { // IExtract. + AppendToOutput("#%" PRId32, instr->ImmS()); + return 8; + } + case 'S': { // IS - Test and branch bit. + AppendToOutput("#%" PRId32, (instr->ImmTestBranchBit5() << 5) | + instr->ImmTestBranchBit40()); + return 2; + } + case 's': { // Is - Shift (immediate). + switch (format[2]) { + case '1': { // Is1 - SSHR. + int shift = 16 << HighestSetBitPosition(instr->ImmNEONImmh()); + shift -= instr->ImmNEONImmhImmb(); + AppendToOutput("#%d", shift); + return 3; + } + case '2': { // Is2 - SLI. + int shift = instr->ImmNEONImmhImmb(); + shift -= 8 << HighestSetBitPosition(instr->ImmNEONImmh()); + AppendToOutput("#%d", shift); + return 3; + } + default: { + VIXL_UNIMPLEMENTED(); + return 0; + } + } + } + case 'D': { // IDebug - HLT and BRK instructions. + AppendToOutput("#0x%" PRIx32, instr->ImmException()); + return 6; + } + case 'V': { // Immediate Vector. + switch (format[2]) { + case 'E': { // IVExtract. + AppendToOutput("#%" PRId32, instr->ImmNEONExt()); + return 9; + } + case 'B': { // IVByElemIndex. + int vm_index = (instr->NEONH() << 1) | instr->NEONL(); + if (instr->NEONSize() == 1) { + vm_index = (vm_index << 1) | instr->NEONM(); + } + AppendToOutput("%d", vm_index); + return strlen("IVByElemIndex"); + } + case 'I': { // INS element. + if (strncmp(format, "IVInsIndex", strlen("IVInsIndex")) == 0) { + int rd_index, rn_index; + int imm5 = instr->ImmNEON5(); + int imm4 = instr->ImmNEON4(); + int tz = CountTrailingZeros(imm5, 32); + rd_index = imm5 >> (tz + 1); + rn_index = imm4 >> tz; + if (strncmp(format, "IVInsIndex1", strlen("IVInsIndex1")) == 0) { + AppendToOutput("%d", rd_index); + return strlen("IVInsIndex1"); + } else if (strncmp(format, "IVInsIndex2", + strlen("IVInsIndex2")) == 0) { + AppendToOutput("%d", rn_index); + return strlen("IVInsIndex2"); + } else { + VIXL_UNIMPLEMENTED(); + return 0; + } + } + VIXL_FALLTHROUGH(); + } + case 'L': { // IVLSLane[0123] - suffix indicates access size shift. + AppendToOutput("%d", instr->NEONLSIndex(format[8] - '0')); + return 9; + } + case 'M': { // Modified Immediate cases. + if (strncmp(format, + "IVMIImmFPSingle", + strlen("IVMIImmFPSingle")) == 0) { + AppendToOutput("#0x%" PRIx32 " (%.4f)", instr->ImmNEONabcdefgh(), + instr->ImmNEONFP32()); + return strlen("IVMIImmFPSingle"); + } else if (strncmp(format, + "IVMIImmFPDouble", + strlen("IVMIImmFPDouble")) == 0) { + AppendToOutput("#0x%" PRIx32 " (%.4f)", instr->ImmNEONabcdefgh(), + instr->ImmNEONFP64()); + return strlen("IVMIImmFPDouble"); + } else if (strncmp(format, "IVMIImm8", strlen("IVMIImm8")) == 0) { + uint64_t imm8 = instr->ImmNEONabcdefgh(); + AppendToOutput("#0x%" PRIx64, imm8); + return strlen("IVMIImm8"); + } else if (strncmp(format, "IVMIImm", strlen("IVMIImm")) == 0) { + uint64_t imm8 = instr->ImmNEONabcdefgh(); + uint64_t imm = 0; + for (int i = 0; i < 8; ++i) { + if (imm8 & (1 << i)) { + imm |= (UINT64_C(0xff) << (8 * i)); + } + } + AppendToOutput("#0x%" PRIx64, imm); + return strlen("IVMIImm"); + } else if (strncmp(format, "IVMIShiftAmt1", + strlen("IVMIShiftAmt1")) == 0) { + int cmode = instr->NEONCmode(); + int shift_amount = 8 * ((cmode >> 1) & 3); + AppendToOutput("#%d", shift_amount); + return strlen("IVMIShiftAmt1"); + } else if (strncmp(format, "IVMIShiftAmt2", + strlen("IVMIShiftAmt2")) == 0) { + int cmode = instr->NEONCmode(); + int shift_amount = 8 << (cmode & 1); + AppendToOutput("#%d", shift_amount); + return strlen("IVMIShiftAmt2"); + } else { + VIXL_UNIMPLEMENTED(); + return 0; + } + } + default: { + VIXL_UNIMPLEMENTED(); + return 0; + } + } + } + case 'X': { // IX - CLREX instruction. + AppendToOutput("#0x%" PRIx32, instr->CRm()); + return 2; + } + default: { + VIXL_UNIMPLEMENTED(); + return 0; + } + } +} + + +int Disassembler::SubstituteBitfieldImmediateField(const Instruction* instr, + const char* format) { + VIXL_ASSERT((format[0] == 'I') && (format[1] == 'B')); + unsigned r = instr->ImmR(); + unsigned s = instr->ImmS(); + + switch (format[2]) { + case 'r': { // IBr. + AppendToOutput("#%d", r); + return 3; + } + case 's': { // IBs+1 or IBs-r+1. + if (format[3] == '+') { + AppendToOutput("#%d", s + 1); + return 5; + } else { + VIXL_ASSERT(format[3] == '-'); + AppendToOutput("#%d", s - r + 1); + return 7; + } + } + case 'Z': { // IBZ-r. + VIXL_ASSERT((format[3] == '-') && (format[4] == 'r')); + unsigned reg_size = (instr->SixtyFourBits() == 1) ? kXRegSize : kWRegSize; + AppendToOutput("#%d", reg_size - r); + return 5; + } + default: { + VIXL_UNREACHABLE(); + return 0; + } + } +} + + +int Disassembler::SubstituteLiteralField(const Instruction* instr, + const char* format) { + VIXL_ASSERT(strncmp(format, "LValue", 6) == 0); + USE(format); + + const void * address = instr->LiteralAddress<const void *>(); + switch (instr->Mask(LoadLiteralMask)) { + case LDR_w_lit: + case LDR_x_lit: + case LDRSW_x_lit: + case LDR_s_lit: + case LDR_d_lit: + case LDR_q_lit: + AppendCodeRelativeDataAddressToOutput(instr, address); + break; + case PRFM_lit: { + // Use the prefetch hint to decide how to print the address. + switch (instr->PrefetchHint()) { + case 0x0: // PLD: prefetch for load. + case 0x2: // PST: prepare for store. + AppendCodeRelativeDataAddressToOutput(instr, address); + break; + case 0x1: // PLI: preload instructions. + AppendCodeRelativeCodeAddressToOutput(instr, address); + break; + case 0x3: // Unallocated hint. + AppendCodeRelativeAddressToOutput(instr, address); + break; + } + break; + } + default: + VIXL_UNREACHABLE(); + } + + return 6; +} + + +int Disassembler::SubstituteShiftField(const Instruction* instr, + const char* format) { + VIXL_ASSERT(format[0] == 'N'); + VIXL_ASSERT(instr->ShiftDP() <= 0x3); + + switch (format[1]) { + case 'D': { // HDP. + VIXL_ASSERT(instr->ShiftDP() != ROR); + VIXL_FALLTHROUGH(); + } + case 'L': { // HLo. + if (instr->ImmDPShift() != 0) { + const char* shift_type[] = {"lsl", "lsr", "asr", "ror"}; + AppendToOutput(", %s #%" PRId32, shift_type[instr->ShiftDP()], + instr->ImmDPShift()); + } + return 3; + } + default: + VIXL_UNIMPLEMENTED(); + return 0; + } +} + + +int Disassembler::SubstituteConditionField(const Instruction* instr, + const char* format) { + VIXL_ASSERT(format[0] == 'C'); + const char* condition_code[] = { "eq", "ne", "hs", "lo", + "mi", "pl", "vs", "vc", + "hi", "ls", "ge", "lt", + "gt", "le", "al", "nv" }; + int cond; + switch (format[1]) { + case 'B': cond = instr->ConditionBranch(); break; + case 'I': { + cond = InvertCondition(static_cast<Condition>(instr->Condition())); + break; + } + default: cond = instr->Condition(); + } + AppendToOutput("%s", condition_code[cond]); + return 4; +} + + +int Disassembler::SubstitutePCRelAddressField(const Instruction* instr, + const char* format) { + VIXL_ASSERT((strcmp(format, "AddrPCRelByte") == 0) || // Used by `adr`. + (strcmp(format, "AddrPCRelPage") == 0)); // Used by `adrp`. + + int64_t offset = instr->ImmPCRel(); + + // Compute the target address based on the effective address (after applying + // code_address_offset). This is required for correct behaviour of adrp. + const Instruction* base = instr + code_address_offset(); + if (format[9] == 'P') { + offset *= kPageSize; + base = AlignDown(base, kPageSize); + } + // Strip code_address_offset before printing, so we can use the + // semantically-correct AppendCodeRelativeAddressToOutput. + const void* target = + reinterpret_cast<const void*>(base + offset - code_address_offset()); + + AppendPCRelativeOffsetToOutput(instr, offset); + AppendToOutput(" "); + AppendCodeRelativeAddressToOutput(instr, target); + return 13; +} + + +int Disassembler::SubstituteBranchTargetField(const Instruction* instr, + const char* format) { + VIXL_ASSERT(strncmp(format, "TImm", 4) == 0); + + int64_t offset = 0; + switch (format[5]) { + // BImmUncn - unconditional branch immediate. + case 'n': offset = instr->ImmUncondBranch(); break; + // BImmCond - conditional branch immediate. + case 'o': offset = instr->ImmCondBranch(); break; + // BImmCmpa - compare and branch immediate. + case 'm': offset = instr->ImmCmpBranch(); break; + // BImmTest - test and branch immediate. + case 'e': offset = instr->ImmTestBranch(); break; + default: VIXL_UNIMPLEMENTED(); + } + offset <<= kInstructionSizeLog2; + const void* target_address = reinterpret_cast<const void*>(instr + offset); + VIXL_STATIC_ASSERT(sizeof(*instr) == 1); + + AppendPCRelativeOffsetToOutput(instr, offset); + AppendToOutput(" "); + AppendCodeRelativeCodeAddressToOutput(instr, target_address); + + return 8; +} + + +int Disassembler::SubstituteExtendField(const Instruction* instr, + const char* format) { + VIXL_ASSERT(strncmp(format, "Ext", 3) == 0); + VIXL_ASSERT(instr->ExtendMode() <= 7); + USE(format); + + const char* extend_mode[] = { "uxtb", "uxth", "uxtw", "uxtx", + "sxtb", "sxth", "sxtw", "sxtx" }; + + // If rd or rn is SP, uxtw on 32-bit registers and uxtx on 64-bit + // registers becomes lsl. + if (((instr->Rd() == kZeroRegCode) || (instr->Rn() == kZeroRegCode)) && + (((instr->ExtendMode() == UXTW) && (instr->SixtyFourBits() == 0)) || + (instr->ExtendMode() == UXTX))) { + if (instr->ImmExtendShift() > 0) { + AppendToOutput(", lsl #%" PRId32, instr->ImmExtendShift()); + } + } else { + AppendToOutput(", %s", extend_mode[instr->ExtendMode()]); + if (instr->ImmExtendShift() > 0) { + AppendToOutput(" #%" PRId32, instr->ImmExtendShift()); + } + } + return 3; +} + + +int Disassembler::SubstituteLSRegOffsetField(const Instruction* instr, + const char* format) { + VIXL_ASSERT(strncmp(format, "Offsetreg", 9) == 0); + const char* extend_mode[] = { "undefined", "undefined", "uxtw", "lsl", + "undefined", "undefined", "sxtw", "sxtx" }; + USE(format); + + unsigned shift = instr->ImmShiftLS(); + Extend ext = static_cast<Extend>(instr->ExtendMode()); + char reg_type = ((ext == UXTW) || (ext == SXTW)) ? 'w' : 'x'; + + unsigned rm = instr->Rm(); + if (rm == kZeroRegCode) { + AppendToOutput("%czr", reg_type); + } else { + AppendToOutput("%c%d", reg_type, rm); + } + + // Extend mode UXTX is an alias for shift mode LSL here. + if (!((ext == UXTX) && (shift == 0))) { + AppendToOutput(", %s", extend_mode[ext]); + if (shift != 0) { + AppendToOutput(" #%d", instr->SizeLS()); + } + } + return 9; +} + + +int Disassembler::SubstitutePrefetchField(const Instruction* instr, + const char* format) { + VIXL_ASSERT(format[0] == 'P'); + USE(format); + + static const char* hints[] = {"ld", "li", "st"}; + static const char* stream_options[] = {"keep", "strm"}; + + unsigned hint = instr->PrefetchHint(); + unsigned target = instr->PrefetchTarget() + 1; + unsigned stream = instr->PrefetchStream(); + + if ((hint >= (sizeof(hints) / sizeof(hints[0]))) || (target > 3)) { + // Unallocated prefetch operations. + int prefetch_mode = instr->ImmPrefetchOperation(); + AppendToOutput("#0b%c%c%c%c%c", + (prefetch_mode & (1 << 4)) ? '1' : '0', + (prefetch_mode & (1 << 3)) ? '1' : '0', + (prefetch_mode & (1 << 2)) ? '1' : '0', + (prefetch_mode & (1 << 1)) ? '1' : '0', + (prefetch_mode & (1 << 0)) ? '1' : '0'); + } else { + VIXL_ASSERT(stream < (sizeof(stream_options) / sizeof(stream_options[0]))); + AppendToOutput("p%sl%d%s", hints[hint], target, stream_options[stream]); + } + return 6; +} + +int Disassembler::SubstituteBarrierField(const Instruction* instr, + const char* format) { + VIXL_ASSERT(format[0] == 'M'); + USE(format); + + static const char* options[4][4] = { + { "sy (0b0000)", "oshld", "oshst", "osh" }, + { "sy (0b0100)", "nshld", "nshst", "nsh" }, + { "sy (0b1000)", "ishld", "ishst", "ish" }, + { "sy (0b1100)", "ld", "st", "sy" } + }; + int domain = instr->ImmBarrierDomain(); + int type = instr->ImmBarrierType(); + + AppendToOutput("%s", options[domain][type]); + return 1; +} + +int Disassembler::SubstituteSysOpField(const Instruction* instr, + const char* format) { + VIXL_ASSERT(format[0] == 'G'); + int op = -1; + switch (format[1]) { + case '1': op = instr->SysOp1(); break; + case '2': op = instr->SysOp2(); break; + default: + VIXL_UNREACHABLE(); + } + AppendToOutput("#%d", op); + return 2; +} + +int Disassembler::SubstituteCrField(const Instruction* instr, + const char* format) { + VIXL_ASSERT(format[0] == 'K'); + int cr = -1; + switch (format[1]) { + case 'n': cr = instr->CRn(); break; + case 'm': cr = instr->CRm(); break; + default: + VIXL_UNREACHABLE(); + } + AppendToOutput("C%d", cr); + return 2; +} + +void Disassembler::ResetOutput() { + buffer_pos_ = 0; + buffer_[buffer_pos_] = 0; +} + + +void Disassembler::AppendToOutput(const char* format, ...) { + va_list args; + va_start(args, format); + buffer_pos_ += vsnprintf(&buffer_[buffer_pos_], buffer_size_ - buffer_pos_, + format, args); + va_end(args); +} + + +void PrintDisassembler::ProcessOutput(const Instruction* instr) { + fprintf(stream_, "0x%016" PRIx64 " %08" PRIx32 "\t\t%s\n", + reinterpret_cast<uint64_t>(instr), + instr->InstructionBits(), + GetOutput()); +} + +} // namespace vixl diff --git a/qemu/disas/libvixl/a64/disasm-a64.h b/qemu/disas/libvixl/vixl/a64/disasm-a64.h index ddfe98be1..930df6ea6 100644 --- a/qemu/disas/libvixl/a64/disasm-a64.h +++ b/qemu/disas/libvixl/vixl/a64/disasm-a64.h @@ -1,4 +1,4 @@ -// Copyright 2013, ARM Limited +// Copyright 2015, ARM Limited // All rights reserved. // // Redistribution and use in source and binary forms, with or without @@ -27,11 +27,11 @@ #ifndef VIXL_A64_DISASM_A64_H #define VIXL_A64_DISASM_A64_H -#include "globals.h" -#include "utils.h" -#include "instructions-a64.h" -#include "decoder-a64.h" -#include "assembler-a64.h" +#include "vixl/globals.h" +#include "vixl/utils.h" +#include "vixl/a64/instructions-a64.h" +#include "vixl/a64/decoder-a64.h" +#include "vixl/a64/assembler-a64.h" namespace vixl { @@ -55,6 +55,7 @@ class Disassembler: public DecoderVisitor { // customize the disassembly output. // Prints the name of a register. + // TODO: This currently doesn't allow renaming of V registers. virtual void AppendRegisterNameToOutput(const Instruction* instr, const CPURegister& reg); @@ -122,7 +123,8 @@ class Disassembler: public DecoderVisitor { int SubstituteLSRegOffsetField(const Instruction* instr, const char* format); int SubstitutePrefetchField(const Instruction* instr, const char* format); int SubstituteBarrierField(const Instruction* instr, const char* format); - + int SubstituteSysOpField(const Instruction* instr, const char* format); + int SubstituteCrField(const Instruction* instr, const char* format); bool RdIsZROrSP(const Instruction* instr) const { return (instr->Rd() == kZeroRegCode); } @@ -163,7 +165,6 @@ class Disassembler: public DecoderVisitor { class PrintDisassembler: public Disassembler { public: explicit PrintDisassembler(FILE* stream) : stream_(stream) { } - virtual ~PrintDisassembler() { } protected: virtual void ProcessOutput(const Instruction* instr); diff --git a/qemu/disas/libvixl/vixl/a64/instructions-a64.cc b/qemu/disas/libvixl/vixl/a64/instructions-a64.cc new file mode 100644 index 000000000..33992f88a --- /dev/null +++ b/qemu/disas/libvixl/vixl/a64/instructions-a64.cc @@ -0,0 +1,622 @@ +// Copyright 2015, ARM Limited +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// +// * Redistributions of source code must retain the above copyright notice, +// this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above copyright notice, +// this list of conditions and the following disclaimer in the documentation +// and/or other materials provided with the distribution. +// * Neither the name of ARM Limited nor the names of its contributors may be +// used to endorse or promote products derived from this software without +// specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND +// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE +// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, +// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +#include "vixl/a64/instructions-a64.h" +#include "vixl/a64/assembler-a64.h" + +namespace vixl { + + +// Floating-point infinity values. +const float16 kFP16PositiveInfinity = 0x7c00; +const float16 kFP16NegativeInfinity = 0xfc00; +const float kFP32PositiveInfinity = rawbits_to_float(0x7f800000); +const float kFP32NegativeInfinity = rawbits_to_float(0xff800000); +const double kFP64PositiveInfinity = + rawbits_to_double(UINT64_C(0x7ff0000000000000)); +const double kFP64NegativeInfinity = + rawbits_to_double(UINT64_C(0xfff0000000000000)); + + +// The default NaN values (for FPCR.DN=1). +const double kFP64DefaultNaN = rawbits_to_double(UINT64_C(0x7ff8000000000000)); +const float kFP32DefaultNaN = rawbits_to_float(0x7fc00000); +const float16 kFP16DefaultNaN = 0x7e00; + + +static uint64_t RotateRight(uint64_t value, + unsigned int rotate, + unsigned int width) { + VIXL_ASSERT(width <= 64); + rotate &= 63; + return ((value & ((UINT64_C(1) << rotate) - 1)) << + (width - rotate)) | (value >> rotate); +} + + +static uint64_t RepeatBitsAcrossReg(unsigned reg_size, + uint64_t value, + unsigned width) { + VIXL_ASSERT((width == 2) || (width == 4) || (width == 8) || (width == 16) || + (width == 32)); + VIXL_ASSERT((reg_size == kWRegSize) || (reg_size == kXRegSize)); + uint64_t result = value & ((UINT64_C(1) << width) - 1); + for (unsigned i = width; i < reg_size; i *= 2) { + result |= (result << i); + } + return result; +} + + +bool Instruction::IsLoad() const { + if (Mask(LoadStoreAnyFMask) != LoadStoreAnyFixed) { + return false; + } + + if (Mask(LoadStorePairAnyFMask) == LoadStorePairAnyFixed) { + return Mask(LoadStorePairLBit) != 0; + } else { + LoadStoreOp op = static_cast<LoadStoreOp>(Mask(LoadStoreMask)); + switch (op) { + case LDRB_w: + case LDRH_w: + case LDR_w: + case LDR_x: + case LDRSB_w: + case LDRSB_x: + case LDRSH_w: + case LDRSH_x: + case LDRSW_x: + case LDR_b: + case LDR_h: + case LDR_s: + case LDR_d: + case LDR_q: return true; + default: return false; + } + } +} + + +bool Instruction::IsStore() const { + if (Mask(LoadStoreAnyFMask) != LoadStoreAnyFixed) { + return false; + } + + if (Mask(LoadStorePairAnyFMask) == LoadStorePairAnyFixed) { + return Mask(LoadStorePairLBit) == 0; + } else { + LoadStoreOp op = static_cast<LoadStoreOp>(Mask(LoadStoreMask)); + switch (op) { + case STRB_w: + case STRH_w: + case STR_w: + case STR_x: + case STR_b: + case STR_h: + case STR_s: + case STR_d: + case STR_q: return true; + default: return false; + } + } +} + + +// Logical immediates can't encode zero, so a return value of zero is used to +// indicate a failure case. Specifically, where the constraints on imm_s are +// not met. +uint64_t Instruction::ImmLogical() const { + unsigned reg_size = SixtyFourBits() ? kXRegSize : kWRegSize; + int32_t n = BitN(); + int32_t imm_s = ImmSetBits(); + int32_t imm_r = ImmRotate(); + + // An integer is constructed from the n, imm_s and imm_r bits according to + // the following table: + // + // N imms immr size S R + // 1 ssssss rrrrrr 64 UInt(ssssss) UInt(rrrrrr) + // 0 0sssss xrrrrr 32 UInt(sssss) UInt(rrrrr) + // 0 10ssss xxrrrr 16 UInt(ssss) UInt(rrrr) + // 0 110sss xxxrrr 8 UInt(sss) UInt(rrr) + // 0 1110ss xxxxrr 4 UInt(ss) UInt(rr) + // 0 11110s xxxxxr 2 UInt(s) UInt(r) + // (s bits must not be all set) + // + // A pattern is constructed of size bits, where the least significant S+1 + // bits are set. The pattern is rotated right by R, and repeated across a + // 32 or 64-bit value, depending on destination register width. + // + + if (n == 1) { + if (imm_s == 0x3f) { + return 0; + } + uint64_t bits = (UINT64_C(1) << (imm_s + 1)) - 1; + return RotateRight(bits, imm_r, 64); + } else { + if ((imm_s >> 1) == 0x1f) { + return 0; + } + for (int width = 0x20; width >= 0x2; width >>= 1) { + if ((imm_s & width) == 0) { + int mask = width - 1; + if ((imm_s & mask) == mask) { + return 0; + } + uint64_t bits = (UINT64_C(1) << ((imm_s & mask) + 1)) - 1; + return RepeatBitsAcrossReg(reg_size, + RotateRight(bits, imm_r & mask, width), + width); + } + } + } + VIXL_UNREACHABLE(); + return 0; +} + + +uint32_t Instruction::ImmNEONabcdefgh() const { + return ImmNEONabc() << 5 | ImmNEONdefgh(); +} + + +float Instruction::Imm8ToFP32(uint32_t imm8) { + // Imm8: abcdefgh (8 bits) + // Single: aBbb.bbbc.defg.h000.0000.0000.0000.0000 (32 bits) + // where B is b ^ 1 + uint32_t bits = imm8; + uint32_t bit7 = (bits >> 7) & 0x1; + uint32_t bit6 = (bits >> 6) & 0x1; + uint32_t bit5_to_0 = bits & 0x3f; + uint32_t result = (bit7 << 31) | ((32 - bit6) << 25) | (bit5_to_0 << 19); + + return rawbits_to_float(result); +} + + +float Instruction::ImmFP32() const { + return Imm8ToFP32(ImmFP()); +} + + +double Instruction::Imm8ToFP64(uint32_t imm8) { + // Imm8: abcdefgh (8 bits) + // Double: aBbb.bbbb.bbcd.efgh.0000.0000.0000.0000 + // 0000.0000.0000.0000.0000.0000.0000.0000 (64 bits) + // where B is b ^ 1 + uint32_t bits = imm8; + uint64_t bit7 = (bits >> 7) & 0x1; + uint64_t bit6 = (bits >> 6) & 0x1; + uint64_t bit5_to_0 = bits & 0x3f; + uint64_t result = (bit7 << 63) | ((256 - bit6) << 54) | (bit5_to_0 << 48); + + return rawbits_to_double(result); +} + + +double Instruction::ImmFP64() const { + return Imm8ToFP64(ImmFP()); +} + + +float Instruction::ImmNEONFP32() const { + return Imm8ToFP32(ImmNEONabcdefgh()); +} + + +double Instruction::ImmNEONFP64() const { + return Imm8ToFP64(ImmNEONabcdefgh()); +} + + +unsigned CalcLSDataSize(LoadStoreOp op) { + VIXL_ASSERT((LSSize_offset + LSSize_width) == (kInstructionSize * 8)); + unsigned size = static_cast<Instr>(op) >> LSSize_offset; + if ((op & LSVector_mask) != 0) { + // Vector register memory operations encode the access size in the "size" + // and "opc" fields. + if ((size == 0) && ((op & LSOpc_mask) >> LSOpc_offset) >= 2) { + size = kQRegSizeInBytesLog2; + } + } + return size; +} + + +unsigned CalcLSPairDataSize(LoadStorePairOp op) { + VIXL_STATIC_ASSERT(kXRegSizeInBytes == kDRegSizeInBytes); + VIXL_STATIC_ASSERT(kWRegSizeInBytes == kSRegSizeInBytes); + switch (op) { + case STP_q: + case LDP_q: return kQRegSizeInBytesLog2; + case STP_x: + case LDP_x: + case STP_d: + case LDP_d: return kXRegSizeInBytesLog2; + default: return kWRegSizeInBytesLog2; + } +} + + +int Instruction::ImmBranchRangeBitwidth(ImmBranchType branch_type) { + switch (branch_type) { + case UncondBranchType: + return ImmUncondBranch_width; + case CondBranchType: + return ImmCondBranch_width; + case CompareBranchType: + return ImmCmpBranch_width; + case TestBranchType: + return ImmTestBranch_width; + default: + VIXL_UNREACHABLE(); + return 0; + } +} + + +int32_t Instruction::ImmBranchForwardRange(ImmBranchType branch_type) { + int32_t encoded_max = 1 << (ImmBranchRangeBitwidth(branch_type) - 1); + return encoded_max * kInstructionSize; +} + + +bool Instruction::IsValidImmPCOffset(ImmBranchType branch_type, + int64_t offset) { + return is_intn(ImmBranchRangeBitwidth(branch_type), offset); +} + + +const Instruction* Instruction::ImmPCOffsetTarget() const { + const Instruction * base = this; + ptrdiff_t offset; + if (IsPCRelAddressing()) { + // ADR and ADRP. + offset = ImmPCRel(); + if (Mask(PCRelAddressingMask) == ADRP) { + base = AlignDown(base, kPageSize); + offset *= kPageSize; + } else { + VIXL_ASSERT(Mask(PCRelAddressingMask) == ADR); + } + } else { + // All PC-relative branches. + VIXL_ASSERT(BranchType() != UnknownBranchType); + // Relative branch offsets are instruction-size-aligned. + offset = ImmBranch() << kInstructionSizeLog2; + } + return base + offset; +} + + +int Instruction::ImmBranch() const { + switch (BranchType()) { + case CondBranchType: return ImmCondBranch(); + case UncondBranchType: return ImmUncondBranch(); + case CompareBranchType: return ImmCmpBranch(); + case TestBranchType: return ImmTestBranch(); + default: VIXL_UNREACHABLE(); + } + return 0; +} + + +void Instruction::SetImmPCOffsetTarget(const Instruction* target) { + if (IsPCRelAddressing()) { + SetPCRelImmTarget(target); + } else { + SetBranchImmTarget(target); + } +} + + +void Instruction::SetPCRelImmTarget(const Instruction* target) { + ptrdiff_t imm21; + if ((Mask(PCRelAddressingMask) == ADR)) { + imm21 = target - this; + } else { + VIXL_ASSERT(Mask(PCRelAddressingMask) == ADRP); + uintptr_t this_page = reinterpret_cast<uintptr_t>(this) / kPageSize; + uintptr_t target_page = reinterpret_cast<uintptr_t>(target) / kPageSize; + imm21 = target_page - this_page; + } + Instr imm = Assembler::ImmPCRelAddress(static_cast<int32_t>(imm21)); + + SetInstructionBits(Mask(~ImmPCRel_mask) | imm); +} + + +void Instruction::SetBranchImmTarget(const Instruction* target) { + VIXL_ASSERT(((target - this) & 3) == 0); + Instr branch_imm = 0; + uint32_t imm_mask = 0; + int offset = static_cast<int>((target - this) >> kInstructionSizeLog2); + switch (BranchType()) { + case CondBranchType: { + branch_imm = Assembler::ImmCondBranch(offset); + imm_mask = ImmCondBranch_mask; + break; + } + case UncondBranchType: { + branch_imm = Assembler::ImmUncondBranch(offset); + imm_mask = ImmUncondBranch_mask; + break; + } + case CompareBranchType: { + branch_imm = Assembler::ImmCmpBranch(offset); + imm_mask = ImmCmpBranch_mask; + break; + } + case TestBranchType: { + branch_imm = Assembler::ImmTestBranch(offset); + imm_mask = ImmTestBranch_mask; + break; + } + default: VIXL_UNREACHABLE(); + } + SetInstructionBits(Mask(~imm_mask) | branch_imm); +} + + +void Instruction::SetImmLLiteral(const Instruction* source) { + VIXL_ASSERT(IsWordAligned(source)); + ptrdiff_t offset = (source - this) >> kLiteralEntrySizeLog2; + Instr imm = Assembler::ImmLLiteral(static_cast<int>(offset)); + Instr mask = ImmLLiteral_mask; + + SetInstructionBits(Mask(~mask) | imm); +} + + +VectorFormat VectorFormatHalfWidth(const VectorFormat vform) { + VIXL_ASSERT(vform == kFormat8H || vform == kFormat4S || vform == kFormat2D || + vform == kFormatH || vform == kFormatS || vform == kFormatD); + switch (vform) { + case kFormat8H: return kFormat8B; + case kFormat4S: return kFormat4H; + case kFormat2D: return kFormat2S; + case kFormatH: return kFormatB; + case kFormatS: return kFormatH; + case kFormatD: return kFormatS; + default: VIXL_UNREACHABLE(); return kFormatUndefined; + } +} + + +VectorFormat VectorFormatDoubleWidth(const VectorFormat vform) { + VIXL_ASSERT(vform == kFormat8B || vform == kFormat4H || vform == kFormat2S || + vform == kFormatB || vform == kFormatH || vform == kFormatS); + switch (vform) { + case kFormat8B: return kFormat8H; + case kFormat4H: return kFormat4S; + case kFormat2S: return kFormat2D; + case kFormatB: return kFormatH; + case kFormatH: return kFormatS; + case kFormatS: return kFormatD; + default: VIXL_UNREACHABLE(); return kFormatUndefined; + } +} + + +VectorFormat VectorFormatFillQ(const VectorFormat vform) { + switch (vform) { + case kFormatB: + case kFormat8B: + case kFormat16B: return kFormat16B; + case kFormatH: + case kFormat4H: + case kFormat8H: return kFormat8H; + case kFormatS: + case kFormat2S: + case kFormat4S: return kFormat4S; + case kFormatD: + case kFormat1D: + case kFormat2D: return kFormat2D; + default: VIXL_UNREACHABLE(); return kFormatUndefined; + } +} + +VectorFormat VectorFormatHalfWidthDoubleLanes(const VectorFormat vform) { + switch (vform) { + case kFormat4H: return kFormat8B; + case kFormat8H: return kFormat16B; + case kFormat2S: return kFormat4H; + case kFormat4S: return kFormat8H; + case kFormat1D: return kFormat2S; + case kFormat2D: return kFormat4S; + default: VIXL_UNREACHABLE(); return kFormatUndefined; + } +} + +VectorFormat VectorFormatDoubleLanes(const VectorFormat vform) { + VIXL_ASSERT(vform == kFormat8B || vform == kFormat4H || vform == kFormat2S); + switch (vform) { + case kFormat8B: return kFormat16B; + case kFormat4H: return kFormat8H; + case kFormat2S: return kFormat4S; + default: VIXL_UNREACHABLE(); return kFormatUndefined; + } +} + + +VectorFormat VectorFormatHalfLanes(const VectorFormat vform) { + VIXL_ASSERT(vform == kFormat16B || vform == kFormat8H || vform == kFormat4S); + switch (vform) { + case kFormat16B: return kFormat8B; + case kFormat8H: return kFormat4H; + case kFormat4S: return kFormat2S; + default: VIXL_UNREACHABLE(); return kFormatUndefined; + } +} + + +VectorFormat ScalarFormatFromLaneSize(int laneSize) { + switch (laneSize) { + case 8: return kFormatB; + case 16: return kFormatH; + case 32: return kFormatS; + case 64: return kFormatD; + default: VIXL_UNREACHABLE(); return kFormatUndefined; + } +} + + +unsigned RegisterSizeInBitsFromFormat(VectorFormat vform) { + VIXL_ASSERT(vform != kFormatUndefined); + switch (vform) { + case kFormatB: return kBRegSize; + case kFormatH: return kHRegSize; + case kFormatS: return kSRegSize; + case kFormatD: return kDRegSize; + case kFormat8B: + case kFormat4H: + case kFormat2S: + case kFormat1D: return kDRegSize; + default: return kQRegSize; + } +} + + +unsigned RegisterSizeInBytesFromFormat(VectorFormat vform) { + return RegisterSizeInBitsFromFormat(vform) / 8; +} + + +unsigned LaneSizeInBitsFromFormat(VectorFormat vform) { + VIXL_ASSERT(vform != kFormatUndefined); + switch (vform) { + case kFormatB: + case kFormat8B: + case kFormat16B: return 8; + case kFormatH: + case kFormat4H: + case kFormat8H: return 16; + case kFormatS: + case kFormat2S: + case kFormat4S: return 32; + case kFormatD: + case kFormat1D: + case kFormat2D: return 64; + default: VIXL_UNREACHABLE(); return 0; + } +} + + +int LaneSizeInBytesFromFormat(VectorFormat vform) { + return LaneSizeInBitsFromFormat(vform) / 8; +} + + +int LaneSizeInBytesLog2FromFormat(VectorFormat vform) { + VIXL_ASSERT(vform != kFormatUndefined); + switch (vform) { + case kFormatB: + case kFormat8B: + case kFormat16B: return 0; + case kFormatH: + case kFormat4H: + case kFormat8H: return 1; + case kFormatS: + case kFormat2S: + case kFormat4S: return 2; + case kFormatD: + case kFormat1D: + case kFormat2D: return 3; + default: VIXL_UNREACHABLE(); return 0; + } +} + + +int LaneCountFromFormat(VectorFormat vform) { + VIXL_ASSERT(vform != kFormatUndefined); + switch (vform) { + case kFormat16B: return 16; + case kFormat8B: + case kFormat8H: return 8; + case kFormat4H: + case kFormat4S: return 4; + case kFormat2S: + case kFormat2D: return 2; + case kFormat1D: + case kFormatB: + case kFormatH: + case kFormatS: + case kFormatD: return 1; + default: VIXL_UNREACHABLE(); return 0; + } +} + + +int MaxLaneCountFromFormat(VectorFormat vform) { + VIXL_ASSERT(vform != kFormatUndefined); + switch (vform) { + case kFormatB: + case kFormat8B: + case kFormat16B: return 16; + case kFormatH: + case kFormat4H: + case kFormat8H: return 8; + case kFormatS: + case kFormat2S: + case kFormat4S: return 4; + case kFormatD: + case kFormat1D: + case kFormat2D: return 2; + default: VIXL_UNREACHABLE(); return 0; + } +} + + +// Does 'vform' indicate a vector format or a scalar format? +bool IsVectorFormat(VectorFormat vform) { + VIXL_ASSERT(vform != kFormatUndefined); + switch (vform) { + case kFormatB: + case kFormatH: + case kFormatS: + case kFormatD: return false; + default: return true; + } +} + + +int64_t MaxIntFromFormat(VectorFormat vform) { + return INT64_MAX >> (64 - LaneSizeInBitsFromFormat(vform)); +} + + +int64_t MinIntFromFormat(VectorFormat vform) { + return INT64_MIN >> (64 - LaneSizeInBitsFromFormat(vform)); +} + + +uint64_t MaxUintFromFormat(VectorFormat vform) { + return UINT64_MAX >> (64 - LaneSizeInBitsFromFormat(vform)); +} +} // namespace vixl + diff --git a/qemu/disas/libvixl/vixl/a64/instructions-a64.h b/qemu/disas/libvixl/vixl/a64/instructions-a64.h new file mode 100644 index 000000000..7e0dbae36 --- /dev/null +++ b/qemu/disas/libvixl/vixl/a64/instructions-a64.h @@ -0,0 +1,757 @@ +// Copyright 2015, ARM Limited +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// +// * Redistributions of source code must retain the above copyright notice, +// this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above copyright notice, +// this list of conditions and the following disclaimer in the documentation +// and/or other materials provided with the distribution. +// * Neither the name of ARM Limited nor the names of its contributors may be +// used to endorse or promote products derived from this software without +// specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND +// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE +// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, +// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +#ifndef VIXL_A64_INSTRUCTIONS_A64_H_ +#define VIXL_A64_INSTRUCTIONS_A64_H_ + +#include "vixl/globals.h" +#include "vixl/utils.h" +#include "vixl/a64/constants-a64.h" + +namespace vixl { +// ISA constants. -------------------------------------------------------------- + +typedef uint32_t Instr; +const unsigned kInstructionSize = 4; +const unsigned kInstructionSizeLog2 = 2; +const unsigned kLiteralEntrySize = 4; +const unsigned kLiteralEntrySizeLog2 = 2; +const unsigned kMaxLoadLiteralRange = 1 * MBytes; + +// This is the nominal page size (as used by the adrp instruction); the actual +// size of the memory pages allocated by the kernel is likely to differ. +const unsigned kPageSize = 4 * KBytes; +const unsigned kPageSizeLog2 = 12; + +const unsigned kBRegSize = 8; +const unsigned kBRegSizeLog2 = 3; +const unsigned kBRegSizeInBytes = kBRegSize / 8; +const unsigned kBRegSizeInBytesLog2 = kBRegSizeLog2 - 3; +const unsigned kHRegSize = 16; +const unsigned kHRegSizeLog2 = 4; +const unsigned kHRegSizeInBytes = kHRegSize / 8; +const unsigned kHRegSizeInBytesLog2 = kHRegSizeLog2 - 3; +const unsigned kWRegSize = 32; +const unsigned kWRegSizeLog2 = 5; +const unsigned kWRegSizeInBytes = kWRegSize / 8; +const unsigned kWRegSizeInBytesLog2 = kWRegSizeLog2 - 3; +const unsigned kXRegSize = 64; +const unsigned kXRegSizeLog2 = 6; +const unsigned kXRegSizeInBytes = kXRegSize / 8; +const unsigned kXRegSizeInBytesLog2 = kXRegSizeLog2 - 3; +const unsigned kSRegSize = 32; +const unsigned kSRegSizeLog2 = 5; +const unsigned kSRegSizeInBytes = kSRegSize / 8; +const unsigned kSRegSizeInBytesLog2 = kSRegSizeLog2 - 3; +const unsigned kDRegSize = 64; +const unsigned kDRegSizeLog2 = 6; +const unsigned kDRegSizeInBytes = kDRegSize / 8; +const unsigned kDRegSizeInBytesLog2 = kDRegSizeLog2 - 3; +const unsigned kQRegSize = 128; +const unsigned kQRegSizeLog2 = 7; +const unsigned kQRegSizeInBytes = kQRegSize / 8; +const unsigned kQRegSizeInBytesLog2 = kQRegSizeLog2 - 3; +const uint64_t kWRegMask = UINT64_C(0xffffffff); +const uint64_t kXRegMask = UINT64_C(0xffffffffffffffff); +const uint64_t kSRegMask = UINT64_C(0xffffffff); +const uint64_t kDRegMask = UINT64_C(0xffffffffffffffff); +const uint64_t kSSignMask = UINT64_C(0x80000000); +const uint64_t kDSignMask = UINT64_C(0x8000000000000000); +const uint64_t kWSignMask = UINT64_C(0x80000000); +const uint64_t kXSignMask = UINT64_C(0x8000000000000000); +const uint64_t kByteMask = UINT64_C(0xff); +const uint64_t kHalfWordMask = UINT64_C(0xffff); +const uint64_t kWordMask = UINT64_C(0xffffffff); +const uint64_t kXMaxUInt = UINT64_C(0xffffffffffffffff); +const uint64_t kWMaxUInt = UINT64_C(0xffffffff); +const int64_t kXMaxInt = INT64_C(0x7fffffffffffffff); +const int64_t kXMinInt = INT64_C(0x8000000000000000); +const int32_t kWMaxInt = INT32_C(0x7fffffff); +const int32_t kWMinInt = INT32_C(0x80000000); +const unsigned kLinkRegCode = 30; +const unsigned kZeroRegCode = 31; +const unsigned kSPRegInternalCode = 63; +const unsigned kRegCodeMask = 0x1f; + +const unsigned kAddressTagOffset = 56; +const unsigned kAddressTagWidth = 8; +const uint64_t kAddressTagMask = + ((UINT64_C(1) << kAddressTagWidth) - 1) << kAddressTagOffset; +VIXL_STATIC_ASSERT(kAddressTagMask == UINT64_C(0xff00000000000000)); + +// AArch64 floating-point specifics. These match IEEE-754. +const unsigned kDoubleMantissaBits = 52; +const unsigned kDoubleExponentBits = 11; +const unsigned kFloatMantissaBits = 23; +const unsigned kFloatExponentBits = 8; +const unsigned kFloat16MantissaBits = 10; +const unsigned kFloat16ExponentBits = 5; + +// Floating-point infinity values. +extern const float16 kFP16PositiveInfinity; +extern const float16 kFP16NegativeInfinity; +extern const float kFP32PositiveInfinity; +extern const float kFP32NegativeInfinity; +extern const double kFP64PositiveInfinity; +extern const double kFP64NegativeInfinity; + +// The default NaN values (for FPCR.DN=1). +extern const float16 kFP16DefaultNaN; +extern const float kFP32DefaultNaN; +extern const double kFP64DefaultNaN; + +unsigned CalcLSDataSize(LoadStoreOp op); +unsigned CalcLSPairDataSize(LoadStorePairOp op); + +enum ImmBranchType { + UnknownBranchType = 0, + CondBranchType = 1, + UncondBranchType = 2, + CompareBranchType = 3, + TestBranchType = 4 +}; + +enum AddrMode { + Offset, + PreIndex, + PostIndex +}; + +enum FPRounding { + // The first four values are encodable directly by FPCR<RMode>. + FPTieEven = 0x0, + FPPositiveInfinity = 0x1, + FPNegativeInfinity = 0x2, + FPZero = 0x3, + + // The final rounding modes are only available when explicitly specified by + // the instruction (such as with fcvta). It cannot be set in FPCR. + FPTieAway, + FPRoundOdd +}; + +enum Reg31Mode { + Reg31IsStackPointer, + Reg31IsZeroRegister +}; + +// Instructions. --------------------------------------------------------------- + +class Instruction { + public: + Instr InstructionBits() const { + return *(reinterpret_cast<const Instr*>(this)); + } + + void SetInstructionBits(Instr new_instr) { + *(reinterpret_cast<Instr*>(this)) = new_instr; + } + + int Bit(int pos) const { + return (InstructionBits() >> pos) & 1; + } + + uint32_t Bits(int msb, int lsb) const { + return unsigned_bitextract_32(msb, lsb, InstructionBits()); + } + + int32_t SignedBits(int msb, int lsb) const { + int32_t bits = *(reinterpret_cast<const int32_t*>(this)); + return signed_bitextract_32(msb, lsb, bits); + } + + Instr Mask(uint32_t mask) const { + return InstructionBits() & mask; + } + + #define DEFINE_GETTER(Name, HighBit, LowBit, Func) \ + int32_t Name() const { return Func(HighBit, LowBit); } + INSTRUCTION_FIELDS_LIST(DEFINE_GETTER) + #undef DEFINE_GETTER + + // ImmPCRel is a compound field (not present in INSTRUCTION_FIELDS_LIST), + // formed from ImmPCRelLo and ImmPCRelHi. + int ImmPCRel() const { + int offset = + static_cast<int>((ImmPCRelHi() << ImmPCRelLo_width) | ImmPCRelLo()); + int width = ImmPCRelLo_width + ImmPCRelHi_width; + return signed_bitextract_32(width - 1, 0, offset); + } + + uint64_t ImmLogical() const; + unsigned ImmNEONabcdefgh() const; + float ImmFP32() const; + double ImmFP64() const; + float ImmNEONFP32() const; + double ImmNEONFP64() const; + + unsigned SizeLS() const { + return CalcLSDataSize(static_cast<LoadStoreOp>(Mask(LoadStoreMask))); + } + + unsigned SizeLSPair() const { + return CalcLSPairDataSize( + static_cast<LoadStorePairOp>(Mask(LoadStorePairMask))); + } + + int NEONLSIndex(int access_size_shift) const { + int64_t q = NEONQ(); + int64_t s = NEONS(); + int64_t size = NEONLSSize(); + int64_t index = (q << 3) | (s << 2) | size; + return static_cast<int>(index >> access_size_shift); + } + + // Helpers. + bool IsCondBranchImm() const { + return Mask(ConditionalBranchFMask) == ConditionalBranchFixed; + } + + bool IsUncondBranchImm() const { + return Mask(UnconditionalBranchFMask) == UnconditionalBranchFixed; + } + + bool IsCompareBranch() const { + return Mask(CompareBranchFMask) == CompareBranchFixed; + } + + bool IsTestBranch() const { + return Mask(TestBranchFMask) == TestBranchFixed; + } + + bool IsImmBranch() const { + return BranchType() != UnknownBranchType; + } + + bool IsPCRelAddressing() const { + return Mask(PCRelAddressingFMask) == PCRelAddressingFixed; + } + + bool IsLogicalImmediate() const { + return Mask(LogicalImmediateFMask) == LogicalImmediateFixed; + } + + bool IsAddSubImmediate() const { + return Mask(AddSubImmediateFMask) == AddSubImmediateFixed; + } + + bool IsAddSubExtended() const { + return Mask(AddSubExtendedFMask) == AddSubExtendedFixed; + } + + bool IsLoadOrStore() const { + return Mask(LoadStoreAnyFMask) == LoadStoreAnyFixed; + } + + bool IsLoad() const; + bool IsStore() const; + + bool IsLoadLiteral() const { + // This includes PRFM_lit. + return Mask(LoadLiteralFMask) == LoadLiteralFixed; + } + + bool IsMovn() const { + return (Mask(MoveWideImmediateMask) == MOVN_x) || + (Mask(MoveWideImmediateMask) == MOVN_w); + } + + static int ImmBranchRangeBitwidth(ImmBranchType branch_type); + static int32_t ImmBranchForwardRange(ImmBranchType branch_type); + static bool IsValidImmPCOffset(ImmBranchType branch_type, int64_t offset); + + // Indicate whether Rd can be the stack pointer or the zero register. This + // does not check that the instruction actually has an Rd field. + Reg31Mode RdMode() const { + // The following instructions use sp or wsp as Rd: + // Add/sub (immediate) when not setting the flags. + // Add/sub (extended) when not setting the flags. + // Logical (immediate) when not setting the flags. + // Otherwise, r31 is the zero register. + if (IsAddSubImmediate() || IsAddSubExtended()) { + if (Mask(AddSubSetFlagsBit)) { + return Reg31IsZeroRegister; + } else { + return Reg31IsStackPointer; + } + } + if (IsLogicalImmediate()) { + // Of the logical (immediate) instructions, only ANDS (and its aliases) + // can set the flags. The others can all write into sp. + // Note that some logical operations are not available to + // immediate-operand instructions, so we have to combine two masks here. + if (Mask(LogicalImmediateMask & LogicalOpMask) == ANDS) { + return Reg31IsZeroRegister; + } else { + return Reg31IsStackPointer; + } + } + return Reg31IsZeroRegister; + } + + // Indicate whether Rn can be the stack pointer or the zero register. This + // does not check that the instruction actually has an Rn field. + Reg31Mode RnMode() const { + // The following instructions use sp or wsp as Rn: + // All loads and stores. + // Add/sub (immediate). + // Add/sub (extended). + // Otherwise, r31 is the zero register. + if (IsLoadOrStore() || IsAddSubImmediate() || IsAddSubExtended()) { + return Reg31IsStackPointer; + } + return Reg31IsZeroRegister; + } + + ImmBranchType BranchType() const { + if (IsCondBranchImm()) { + return CondBranchType; + } else if (IsUncondBranchImm()) { + return UncondBranchType; + } else if (IsCompareBranch()) { + return CompareBranchType; + } else if (IsTestBranch()) { + return TestBranchType; + } else { + return UnknownBranchType; + } + } + + // Find the target of this instruction. 'this' may be a branch or a + // PC-relative addressing instruction. + const Instruction* ImmPCOffsetTarget() const; + + // Patch a PC-relative offset to refer to 'target'. 'this' may be a branch or + // a PC-relative addressing instruction. + void SetImmPCOffsetTarget(const Instruction* target); + // Patch a literal load instruction to load from 'source'. + void SetImmLLiteral(const Instruction* source); + + // The range of a load literal instruction, expressed as 'instr +- range'. + // The range is actually the 'positive' range; the branch instruction can + // target [instr - range - kInstructionSize, instr + range]. + static const int kLoadLiteralImmBitwidth = 19; + static const int kLoadLiteralRange = + (1 << kLoadLiteralImmBitwidth) / 2 - kInstructionSize; + + // Calculate the address of a literal referred to by a load-literal + // instruction, and return it as the specified type. + // + // The literal itself is safely mutable only if the backing buffer is safely + // mutable. + template <typename T> + T LiteralAddress() const { + uint64_t base_raw = reinterpret_cast<uint64_t>(this); + int64_t offset = ImmLLiteral() << kLiteralEntrySizeLog2; + uint64_t address_raw = base_raw + offset; + + // Cast the address using a C-style cast. A reinterpret_cast would be + // appropriate, but it can't cast one integral type to another. + T address = (T)(address_raw); + + // Assert that the address can be represented by the specified type. + VIXL_ASSERT((uint64_t)(address) == address_raw); + + return address; + } + + uint32_t Literal32() const { + uint32_t literal; + memcpy(&literal, LiteralAddress<const void*>(), sizeof(literal)); + return literal; + } + + uint64_t Literal64() const { + uint64_t literal; + memcpy(&literal, LiteralAddress<const void*>(), sizeof(literal)); + return literal; + } + + float LiteralFP32() const { + return rawbits_to_float(Literal32()); + } + + double LiteralFP64() const { + return rawbits_to_double(Literal64()); + } + + const Instruction* NextInstruction() const { + return this + kInstructionSize; + } + + const Instruction* InstructionAtOffset(int64_t offset) const { + VIXL_ASSERT(IsWordAligned(this + offset)); + return this + offset; + } + + template<typename T> static Instruction* Cast(T src) { + return reinterpret_cast<Instruction*>(src); + } + + template<typename T> static const Instruction* CastConst(T src) { + return reinterpret_cast<const Instruction*>(src); + } + + private: + int ImmBranch() const; + + static float Imm8ToFP32(uint32_t imm8); + static double Imm8ToFP64(uint32_t imm8); + + void SetPCRelImmTarget(const Instruction* target); + void SetBranchImmTarget(const Instruction* target); +}; + + +// Functions for handling NEON vector format information. +enum VectorFormat { + kFormatUndefined = 0xffffffff, + kFormat8B = NEON_8B, + kFormat16B = NEON_16B, + kFormat4H = NEON_4H, + kFormat8H = NEON_8H, + kFormat2S = NEON_2S, + kFormat4S = NEON_4S, + kFormat1D = NEON_1D, + kFormat2D = NEON_2D, + + // Scalar formats. We add the scalar bit to distinguish between scalar and + // vector enumerations; the bit is always set in the encoding of scalar ops + // and always clear for vector ops. Although kFormatD and kFormat1D appear + // to be the same, their meaning is subtly different. The first is a scalar + // operation, the second a vector operation that only affects one lane. + kFormatB = NEON_B | NEONScalar, + kFormatH = NEON_H | NEONScalar, + kFormatS = NEON_S | NEONScalar, + kFormatD = NEON_D | NEONScalar +}; + +VectorFormat VectorFormatHalfWidth(const VectorFormat vform); +VectorFormat VectorFormatDoubleWidth(const VectorFormat vform); +VectorFormat VectorFormatDoubleLanes(const VectorFormat vform); +VectorFormat VectorFormatHalfLanes(const VectorFormat vform); +VectorFormat ScalarFormatFromLaneSize(int lanesize); +VectorFormat VectorFormatHalfWidthDoubleLanes(const VectorFormat vform); +VectorFormat VectorFormatFillQ(const VectorFormat vform); +unsigned RegisterSizeInBitsFromFormat(VectorFormat vform); +unsigned RegisterSizeInBytesFromFormat(VectorFormat vform); +// TODO: Make the return types of these functions consistent. +unsigned LaneSizeInBitsFromFormat(VectorFormat vform); +int LaneSizeInBytesFromFormat(VectorFormat vform); +int LaneSizeInBytesLog2FromFormat(VectorFormat vform); +int LaneCountFromFormat(VectorFormat vform); +int MaxLaneCountFromFormat(VectorFormat vform); +bool IsVectorFormat(VectorFormat vform); +int64_t MaxIntFromFormat(VectorFormat vform); +int64_t MinIntFromFormat(VectorFormat vform); +uint64_t MaxUintFromFormat(VectorFormat vform); + + +enum NEONFormat { + NF_UNDEF = 0, + NF_8B = 1, + NF_16B = 2, + NF_4H = 3, + NF_8H = 4, + NF_2S = 5, + NF_4S = 6, + NF_1D = 7, + NF_2D = 8, + NF_B = 9, + NF_H = 10, + NF_S = 11, + NF_D = 12 +}; + +static const unsigned kNEONFormatMaxBits = 6; + +struct NEONFormatMap { + // The bit positions in the instruction to consider. + uint8_t bits[kNEONFormatMaxBits]; + + // Mapping from concatenated bits to format. + NEONFormat map[1 << kNEONFormatMaxBits]; +}; + +class NEONFormatDecoder { + public: + enum SubstitutionMode { + kPlaceholder, + kFormat + }; + + // Construct a format decoder with increasingly specific format maps for each + // subsitution. If no format map is specified, the default is the integer + // format map. + explicit NEONFormatDecoder(const Instruction* instr) { + instrbits_ = instr->InstructionBits(); + SetFormatMaps(IntegerFormatMap()); + } + NEONFormatDecoder(const Instruction* instr, + const NEONFormatMap* format) { + instrbits_ = instr->InstructionBits(); + SetFormatMaps(format); + } + NEONFormatDecoder(const Instruction* instr, + const NEONFormatMap* format0, + const NEONFormatMap* format1) { + instrbits_ = instr->InstructionBits(); + SetFormatMaps(format0, format1); + } + NEONFormatDecoder(const Instruction* instr, + const NEONFormatMap* format0, + const NEONFormatMap* format1, + const NEONFormatMap* format2) { + instrbits_ = instr->InstructionBits(); + SetFormatMaps(format0, format1, format2); + } + + // Set the format mapping for all or individual substitutions. + void SetFormatMaps(const NEONFormatMap* format0, + const NEONFormatMap* format1 = NULL, + const NEONFormatMap* format2 = NULL) { + VIXL_ASSERT(format0 != NULL); + formats_[0] = format0; + formats_[1] = (format1 == NULL) ? formats_[0] : format1; + formats_[2] = (format2 == NULL) ? formats_[1] : format2; + } + void SetFormatMap(unsigned index, const NEONFormatMap* format) { + VIXL_ASSERT(index <= (sizeof(formats_) / sizeof(formats_[0]))); + VIXL_ASSERT(format != NULL); + formats_[index] = format; + } + + // Substitute %s in the input string with the placeholder string for each + // register, ie. "'B", "'H", etc. + const char* SubstitutePlaceholders(const char* string) { + return Substitute(string, kPlaceholder, kPlaceholder, kPlaceholder); + } + + // Substitute %s in the input string with a new string based on the + // substitution mode. + const char* Substitute(const char* string, + SubstitutionMode mode0 = kFormat, + SubstitutionMode mode1 = kFormat, + SubstitutionMode mode2 = kFormat) { + snprintf(form_buffer_, sizeof(form_buffer_), string, + GetSubstitute(0, mode0), + GetSubstitute(1, mode1), + GetSubstitute(2, mode2)); + return form_buffer_; + } + + // Append a "2" to a mnemonic string based of the state of the Q bit. + const char* Mnemonic(const char* mnemonic) { + if ((instrbits_ & NEON_Q) != 0) { + snprintf(mne_buffer_, sizeof(mne_buffer_), "%s2", mnemonic); + return mne_buffer_; + } + return mnemonic; + } + + VectorFormat GetVectorFormat(int format_index = 0) { + return GetVectorFormat(formats_[format_index]); + } + + VectorFormat GetVectorFormat(const NEONFormatMap* format_map) { + static const VectorFormat vform[] = { + kFormatUndefined, + kFormat8B, kFormat16B, kFormat4H, kFormat8H, + kFormat2S, kFormat4S, kFormat1D, kFormat2D, + kFormatB, kFormatH, kFormatS, kFormatD + }; + VIXL_ASSERT(GetNEONFormat(format_map) < (sizeof(vform) / sizeof(vform[0]))); + return vform[GetNEONFormat(format_map)]; + } + + // Built in mappings for common cases. + + // The integer format map uses three bits (Q, size<1:0>) to encode the + // "standard" set of NEON integer vector formats. + static const NEONFormatMap* IntegerFormatMap() { + static const NEONFormatMap map = { + {23, 22, 30}, + {NF_8B, NF_16B, NF_4H, NF_8H, NF_2S, NF_4S, NF_UNDEF, NF_2D} + }; + return ↦ + } + + // The long integer format map uses two bits (size<1:0>) to encode the + // long set of NEON integer vector formats. These are used in narrow, wide + // and long operations. + static const NEONFormatMap* LongIntegerFormatMap() { + static const NEONFormatMap map = { + {23, 22}, {NF_8H, NF_4S, NF_2D} + }; + return ↦ + } + + // The FP format map uses two bits (Q, size<0>) to encode the NEON FP vector + // formats: NF_2S, NF_4S, NF_2D. + static const NEONFormatMap* FPFormatMap() { + // The FP format map assumes two bits (Q, size<0>) are used to encode the + // NEON FP vector formats: NF_2S, NF_4S, NF_2D. + static const NEONFormatMap map = { + {22, 30}, {NF_2S, NF_4S, NF_UNDEF, NF_2D} + }; + return ↦ + } + + // The load/store format map uses three bits (Q, 11, 10) to encode the + // set of NEON vector formats. + static const NEONFormatMap* LoadStoreFormatMap() { + static const NEONFormatMap map = { + {11, 10, 30}, + {NF_8B, NF_16B, NF_4H, NF_8H, NF_2S, NF_4S, NF_1D, NF_2D} + }; + return ↦ + } + + // The logical format map uses one bit (Q) to encode the NEON vector format: + // NF_8B, NF_16B. + static const NEONFormatMap* LogicalFormatMap() { + static const NEONFormatMap map = { + {30}, {NF_8B, NF_16B} + }; + return ↦ + } + + // The triangular format map uses between two and five bits to encode the NEON + // vector format: + // xxx10->8B, xxx11->16B, xx100->4H, xx101->8H + // x1000->2S, x1001->4S, 10001->2D, all others undefined. + static const NEONFormatMap* TriangularFormatMap() { + static const NEONFormatMap map = { + {19, 18, 17, 16, 30}, + {NF_UNDEF, NF_UNDEF, NF_8B, NF_16B, NF_4H, NF_8H, NF_8B, NF_16B, NF_2S, + NF_4S, NF_8B, NF_16B, NF_4H, NF_8H, NF_8B, NF_16B, NF_UNDEF, NF_2D, + NF_8B, NF_16B, NF_4H, NF_8H, NF_8B, NF_16B, NF_2S, NF_4S, NF_8B, NF_16B, + NF_4H, NF_8H, NF_8B, NF_16B} + }; + return ↦ + } + + // The scalar format map uses two bits (size<1:0>) to encode the NEON scalar + // formats: NF_B, NF_H, NF_S, NF_D. + static const NEONFormatMap* ScalarFormatMap() { + static const NEONFormatMap map = { + {23, 22}, {NF_B, NF_H, NF_S, NF_D} + }; + return ↦ + } + + // The long scalar format map uses two bits (size<1:0>) to encode the longer + // NEON scalar formats: NF_H, NF_S, NF_D. + static const NEONFormatMap* LongScalarFormatMap() { + static const NEONFormatMap map = { + {23, 22}, {NF_H, NF_S, NF_D} + }; + return ↦ + } + + // The FP scalar format map assumes one bit (size<0>) is used to encode the + // NEON FP scalar formats: NF_S, NF_D. + static const NEONFormatMap* FPScalarFormatMap() { + static const NEONFormatMap map = { + {22}, {NF_S, NF_D} + }; + return ↦ + } + + // The triangular scalar format map uses between one and four bits to encode + // the NEON FP scalar formats: + // xxx1->B, xx10->H, x100->S, 1000->D, all others undefined. + static const NEONFormatMap* TriangularScalarFormatMap() { + static const NEONFormatMap map = { + {19, 18, 17, 16}, + {NF_UNDEF, NF_B, NF_H, NF_B, NF_S, NF_B, NF_H, NF_B, + NF_D, NF_B, NF_H, NF_B, NF_S, NF_B, NF_H, NF_B} + }; + return ↦ + } + + private: + // Get a pointer to a string that represents the format or placeholder for + // the specified substitution index, based on the format map and instruction. + const char* GetSubstitute(int index, SubstitutionMode mode) { + if (mode == kFormat) { + return NEONFormatAsString(GetNEONFormat(formats_[index])); + } + VIXL_ASSERT(mode == kPlaceholder); + return NEONFormatAsPlaceholder(GetNEONFormat(formats_[index])); + } + + // Get the NEONFormat enumerated value for bits obtained from the + // instruction based on the specified format mapping. + NEONFormat GetNEONFormat(const NEONFormatMap* format_map) { + return format_map->map[PickBits(format_map->bits)]; + } + + // Convert a NEONFormat into a string. + static const char* NEONFormatAsString(NEONFormat format) { + static const char* formats[] = { + "undefined", + "8b", "16b", "4h", "8h", "2s", "4s", "1d", "2d", + "b", "h", "s", "d" + }; + VIXL_ASSERT(format < (sizeof(formats) / sizeof(formats[0]))); + return formats[format]; + } + + // Convert a NEONFormat into a register placeholder string. + static const char* NEONFormatAsPlaceholder(NEONFormat format) { + VIXL_ASSERT((format == NF_B) || (format == NF_H) || + (format == NF_S) || (format == NF_D) || + (format == NF_UNDEF)); + static const char* formats[] = { + "undefined", + "undefined", "undefined", "undefined", "undefined", + "undefined", "undefined", "undefined", "undefined", + "'B", "'H", "'S", "'D" + }; + return formats[format]; + } + + // Select bits from instrbits_ defined by the bits array, concatenate them, + // and return the value. + uint8_t PickBits(const uint8_t bits[]) { + uint8_t result = 0; + for (unsigned b = 0; b < kNEONFormatMaxBits; b++) { + if (bits[b] == 0) break; + result <<= 1; + result |= ((instrbits_ & (1 << bits[b])) == 0) ? 0 : 1; + } + return result; + } + + Instr instrbits_; + const NEONFormatMap* formats_[3]; + char form_buffer_[64]; + char mne_buffer_[16]; +}; +} // namespace vixl + +#endif // VIXL_A64_INSTRUCTIONS_A64_H_ diff --git a/qemu/disas/libvixl/code-buffer.h b/qemu/disas/libvixl/vixl/code-buffer.h index da6233dd8..f93ebb6b8 100644 --- a/qemu/disas/libvixl/code-buffer.h +++ b/qemu/disas/libvixl/vixl/code-buffer.h @@ -28,7 +28,7 @@ #define VIXL_CODE_BUFFER_H #include <string.h> -#include "globals.h" +#include "vixl/globals.h" namespace vixl { diff --git a/qemu/disas/libvixl/utils.cc b/qemu/disas/libvixl/vixl/compiler-intrinsics.cc index 80b132a11..fd551faeb 100644 --- a/qemu/disas/libvixl/utils.cc +++ b/qemu/disas/libvixl/vixl/compiler-intrinsics.cc @@ -1,4 +1,4 @@ -// Copyright 2013, ARM Limited +// Copyright 2015, ARM Limited // All rights reserved. // // Redistribution and use in source and binary forms, with or without @@ -24,53 +24,13 @@ // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -#include "utils.h" -#include <stdio.h> +#include "compiler-intrinsics.h" namespace vixl { -uint32_t float_to_rawbits(float value) { - uint32_t bits = 0; - memcpy(&bits, &value, 4); - return bits; -} - - -uint64_t double_to_rawbits(double value) { - uint64_t bits = 0; - memcpy(&bits, &value, 8); - return bits; -} - - -float rawbits_to_float(uint32_t bits) { - float value = 0.0; - memcpy(&value, &bits, 4); - return value; -} - - -double rawbits_to_double(uint64_t bits) { - double value = 0.0; - memcpy(&value, &bits, 8); - return value; -} - -int CountLeadingZeros(uint64_t value, int width) { - VIXL_ASSERT((width == 32) || (width == 64)); - int count = 0; - uint64_t bit_test = UINT64_C(1) << (width - 1); - while ((count < width) && ((bit_test & value) == 0)) { - count++; - bit_test >>= 1; - } - return count; -} - - -int CountLeadingSignBits(int64_t value, int width) { - VIXL_ASSERT((width == 32) || (width == 64)); +int CountLeadingSignBitsFallBack(int64_t value, int width) { + VIXL_ASSERT(IsPowerOf2(width) && (width <= 64)); if (value >= 0) { return CountLeadingZeros(value, width) - 1; } else { @@ -79,23 +39,46 @@ int CountLeadingSignBits(int64_t value, int width) { } -int CountTrailingZeros(uint64_t value, int width) { - VIXL_ASSERT((width == 32) || (width == 64)); +int CountLeadingZerosFallBack(uint64_t value, int width) { + VIXL_ASSERT(IsPowerOf2(width) && (width <= 64)); + if (value == 0) { + return width; + } int count = 0; - while ((count < width) && (((value >> count) & 1) == 0)) { - count++; + value = value << (64 - width); + if ((value & UINT64_C(0xffffffff00000000)) == 0) { + count += 32; + value = value << 32; } + if ((value & UINT64_C(0xffff000000000000)) == 0) { + count += 16; + value = value << 16; + } + if ((value & UINT64_C(0xff00000000000000)) == 0) { + count += 8; + value = value << 8; + } + if ((value & UINT64_C(0xf000000000000000)) == 0) { + count += 4; + value = value << 4; + } + if ((value & UINT64_C(0xc000000000000000)) == 0) { + count += 2; + value = value << 2; + } + if ((value & UINT64_C(0x8000000000000000)) == 0) { + count += 1; + } + count += (value == 0); return count; } -int CountSetBits(uint64_t value, int width) { - // TODO: Other widths could be added here, as the implementation already - // supports them. - VIXL_ASSERT((width == 32) || (width == 64)); +int CountSetBitsFallBack(uint64_t value, int width) { + VIXL_ASSERT(IsPowerOf2(width) && (width <= 64)); // Mask out unused bits to ensure that they are not counted. - value &= (UINT64_C(0xffffffffffffffff) >> (64-width)); + value &= (UINT64_C(0xffffffffffffffff) >> (64 - width)); // Add up the set bits. // The algorithm works by adding pairs of bit fields together iteratively, @@ -122,30 +105,40 @@ int CountSetBits(uint64_t value, int width) { value = ((value >> shift) & kMasks[i]) + (value & kMasks[i]); } - return value; -} - - -uint64_t LowestSetBit(uint64_t value) { - return value & -value; -} - - -bool IsPowerOf2(int64_t value) { - return (value != 0) && ((value & (value - 1)) == 0); + return static_cast<int>(value); } -unsigned CountClearHalfWords(uint64_t imm, unsigned reg_size) { - VIXL_ASSERT((reg_size % 8) == 0); +int CountTrailingZerosFallBack(uint64_t value, int width) { + VIXL_ASSERT(IsPowerOf2(width) && (width <= 64)); int count = 0; - for (unsigned i = 0; i < (reg_size / 16); i++) { - if ((imm & 0xffff) == 0) { - count++; - } - imm >>= 16; + value = value << (64 - width); + if ((value & UINT64_C(0xffffffff)) == 0) { + count += 32; + value = value >> 32; } - return count; + if ((value & 0xffff) == 0) { + count += 16; + value = value >> 16; + } + if ((value & 0xff) == 0) { + count += 8; + value = value >> 8; + } + if ((value & 0xf) == 0) { + count += 4; + value = value >> 4; + } + if ((value & 0x3) == 0) { + count += 2; + value = value >> 2; + } + if ((value & 0x1) == 0) { + count += 1; + } + count += (value == 0); + return count - (64 - width); } + } // namespace vixl diff --git a/qemu/disas/libvixl/vixl/compiler-intrinsics.h b/qemu/disas/libvixl/vixl/compiler-intrinsics.h new file mode 100644 index 000000000..9431beddb --- /dev/null +++ b/qemu/disas/libvixl/vixl/compiler-intrinsics.h @@ -0,0 +1,155 @@ +// Copyright 2015, ARM Limited +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// +// * Redistributions of source code must retain the above copyright notice, +// this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above copyright notice, +// this list of conditions and the following disclaimer in the documentation +// and/or other materials provided with the distribution. +// * Neither the name of ARM Limited nor the names of its contributors may be +// used to endorse or promote products derived from this software without +// specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND +// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE +// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, +// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + +#ifndef VIXL_COMPILER_INTRINSICS_H +#define VIXL_COMPILER_INTRINSICS_H + +#include "globals.h" + +namespace vixl { + +// Helper to check whether the version of GCC used is greater than the specified +// requirement. +#define MAJOR 1000000 +#define MINOR 1000 +#if defined(__GNUC__) && defined(__GNUC_MINOR__) && defined(__GNUC_PATCHLEVEL__) +#define GCC_VERSION_OR_NEWER(major, minor, patchlevel) \ + ((__GNUC__ * MAJOR + __GNUC_MINOR__ * MINOR + __GNUC_PATCHLEVEL__) >= \ + ((major) * MAJOR + (minor) * MINOR + (patchlevel))) +#elif defined(__GNUC__) && defined(__GNUC_MINOR__) +#define GCC_VERSION_OR_NEWER(major, minor, patchlevel) \ + ((__GNUC__ * MAJOR + __GNUC_MINOR__ * MINOR) >= \ + ((major) * MAJOR + (minor) * MINOR + (patchlevel))) +#else +#define GCC_VERSION_OR_NEWER(major, minor, patchlevel) 0 +#endif + + +#if defined(__clang__) && !defined(VIXL_NO_COMPILER_BUILTINS) + +#define COMPILER_HAS_BUILTIN_CLRSB (__has_builtin(__builtin_clrsb)) +#define COMPILER_HAS_BUILTIN_CLZ (__has_builtin(__builtin_clz)) +#define COMPILER_HAS_BUILTIN_CTZ (__has_builtin(__builtin_ctz)) +#define COMPILER_HAS_BUILTIN_FFS (__has_builtin(__builtin_ffs)) +#define COMPILER_HAS_BUILTIN_POPCOUNT (__has_builtin(__builtin_popcount)) + +#elif defined(__GNUC__) && !defined(VIXL_NO_COMPILER_BUILTINS) +// The documentation for these builtins is available at: +// https://gcc.gnu.org/onlinedocs/gcc-$MAJOR.$MINOR.$PATCHLEVEL/gcc//Other-Builtins.html + +# define COMPILER_HAS_BUILTIN_CLRSB (GCC_VERSION_OR_NEWER(4, 7, 0)) +# define COMPILER_HAS_BUILTIN_CLZ (GCC_VERSION_OR_NEWER(3, 4, 0)) +# define COMPILER_HAS_BUILTIN_CTZ (GCC_VERSION_OR_NEWER(3, 4, 0)) +# define COMPILER_HAS_BUILTIN_FFS (GCC_VERSION_OR_NEWER(3, 4, 0)) +# define COMPILER_HAS_BUILTIN_POPCOUNT (GCC_VERSION_OR_NEWER(3, 4, 0)) + +#else +// One can define VIXL_NO_COMPILER_BUILTINS to force using the manually +// implemented C++ methods. + +#define COMPILER_HAS_BUILTIN_BSWAP false +#define COMPILER_HAS_BUILTIN_CLRSB false +#define COMPILER_HAS_BUILTIN_CLZ false +#define COMPILER_HAS_BUILTIN_CTZ false +#define COMPILER_HAS_BUILTIN_FFS false +#define COMPILER_HAS_BUILTIN_POPCOUNT false + +#endif + + +template<typename V> +inline bool IsPowerOf2(V value) { + return (value != 0) && ((value & (value - 1)) == 0); +} + + +// Declaration of fallback functions. +int CountLeadingSignBitsFallBack(int64_t value, int width); +int CountLeadingZerosFallBack(uint64_t value, int width); +int CountSetBitsFallBack(uint64_t value, int width); +int CountTrailingZerosFallBack(uint64_t value, int width); + + +// Implementation of intrinsics functions. +// TODO: The implementations could be improved for sizes different from 32bit +// and 64bit: we could mask the values and call the appropriate builtin. + +template<typename V> +inline int CountLeadingSignBits(V value, int width = (sizeof(V) * 8)) { +#if COMPILER_HAS_BUILTIN_CLRSB + if (width == 32) { + return __builtin_clrsb(value); + } else if (width == 64) { + return __builtin_clrsbll(value); + } +#endif + return CountLeadingSignBitsFallBack(value, width); +} + + +template<typename V> +inline int CountLeadingZeros(V value, int width = (sizeof(V) * 8)) { +#if COMPILER_HAS_BUILTIN_CLZ + if (width == 32) { + return (value == 0) ? 32 : __builtin_clz(static_cast<unsigned>(value)); + } else if (width == 64) { + return (value == 0) ? 64 : __builtin_clzll(value); + } +#endif + return CountLeadingZerosFallBack(value, width); +} + + +template<typename V> +inline int CountSetBits(V value, int width = (sizeof(V) * 8)) { +#if COMPILER_HAS_BUILTIN_POPCOUNT + if (width == 32) { + return __builtin_popcount(static_cast<unsigned>(value)); + } else if (width == 64) { + return __builtin_popcountll(value); + } +#endif + return CountSetBitsFallBack(value, width); +} + + +template<typename V> +inline int CountTrailingZeros(V value, int width = (sizeof(V) * 8)) { +#if COMPILER_HAS_BUILTIN_CTZ + if (width == 32) { + return (value == 0) ? 32 : __builtin_ctz(static_cast<unsigned>(value)); + } else if (width == 64) { + return (value == 0) ? 64 : __builtin_ctzll(value); + } +#endif + return CountTrailingZerosFallBack(value, width); +} + +} // namespace vixl + +#endif // VIXL_COMPILER_INTRINSICS_H + diff --git a/qemu/disas/libvixl/globals.h b/qemu/disas/libvixl/vixl/globals.h index 0c2493105..61dc9f7f7 100644 --- a/qemu/disas/libvixl/globals.h +++ b/qemu/disas/libvixl/vixl/globals.h @@ -1,4 +1,4 @@ -// Copyright 2013, ARM Limited +// Copyright 2015, ARM Limited // All rights reserved. // // Redistribution and use in source and binary forms, with or without @@ -49,20 +49,26 @@ #include <stdint.h> #include <stdlib.h> #include <stddef.h> -#include "platform.h" +#include "vixl/platform.h" typedef uint8_t byte; +// Type for half-precision (16 bit) floating point numbers. +typedef uint16_t float16; + const int KBytes = 1024; const int MBytes = 1024 * KBytes; -#define VIXL_ABORT() printf("in %s, line %i", __FILE__, __LINE__); abort() +#define VIXL_ABORT() \ + do { printf("in %s, line %i", __FILE__, __LINE__); abort(); } while (false) #ifdef VIXL_DEBUG #define VIXL_ASSERT(condition) assert(condition) #define VIXL_CHECK(condition) VIXL_ASSERT(condition) - #define VIXL_UNIMPLEMENTED() printf("UNIMPLEMENTED\t"); VIXL_ABORT() - #define VIXL_UNREACHABLE() printf("UNREACHABLE\t"); VIXL_ABORT() + #define VIXL_UNIMPLEMENTED() \ + do { fprintf(stderr, "UNIMPLEMENTED\t"); VIXL_ABORT(); } while (false) + #define VIXL_UNREACHABLE() \ + do { fprintf(stderr, "UNREACHABLE\t"); VIXL_ABORT(); } while (false) #else #define VIXL_ASSERT(condition) ((void) 0) #define VIXL_CHECK(condition) assert(condition) @@ -76,10 +82,70 @@ const int MBytes = 1024 * KBytes; #define VIXL_STATIC_ASSERT_LINE(line, condition) \ typedef char VIXL_CONCAT(STATIC_ASSERT_LINE_, line)[(condition) ? 1 : -1] \ __attribute__((unused)) -#define VIXL_STATIC_ASSERT(condition) VIXL_STATIC_ASSERT_LINE(__LINE__, condition) //NOLINT +#define VIXL_STATIC_ASSERT(condition) \ + VIXL_STATIC_ASSERT_LINE(__LINE__, condition) + +template <typename T1> +inline void USE(T1) {} + +template <typename T1, typename T2> +inline void USE(T1, T2) {} + +template <typename T1, typename T2, typename T3> +inline void USE(T1, T2, T3) {} + +template <typename T1, typename T2, typename T3, typename T4> +inline void USE(T1, T2, T3, T4) {} + +#define VIXL_ALIGNMENT_EXCEPTION() \ + do { fprintf(stderr, "ALIGNMENT EXCEPTION\t"); VIXL_ABORT(); } while (0) + +// The clang::fallthrough attribute is used along with the Wimplicit-fallthrough +// argument to annotate intentional fall-through between switch labels. +// For more information please refer to: +// http://clang.llvm.org/docs/AttributeReference.html#fallthrough-clang-fallthrough +#ifndef __has_warning + #define __has_warning(x) 0 +#endif + +// Note: This option is only available for Clang. And will only be enabled for +// C++11(201103L). +#if __has_warning("-Wimplicit-fallthrough") && __cplusplus >= 201103L + #define VIXL_FALLTHROUGH() [[clang::fallthrough]] //NOLINT +#else + #define VIXL_FALLTHROUGH() do {} while (0) +#endif + +#if __cplusplus >= 201103L + #define VIXL_NO_RETURN [[noreturn]] //NOLINT +#else + #define VIXL_NO_RETURN __attribute__((noreturn)) +#endif + +// Some functions might only be marked as "noreturn" for the DEBUG build. This +// macro should be used for such cases (for more details see what +// VIXL_UNREACHABLE expands to). +#ifdef VIXL_DEBUG + #define VIXL_DEBUG_NO_RETURN VIXL_NO_RETURN +#else + #define VIXL_DEBUG_NO_RETURN +#endif -template <typename T> inline void USE(T) {} +#ifdef VIXL_INCLUDE_SIMULATOR +#ifndef VIXL_GENERATE_SIMULATOR_INSTRUCTIONS_VALUE + #define VIXL_GENERATE_SIMULATOR_INSTRUCTIONS_VALUE 1 +#endif +#else +#ifndef VIXL_GENERATE_SIMULATOR_INSTRUCTIONS_VALUE + #define VIXL_GENERATE_SIMULATOR_INSTRUCTIONS_VALUE 0 +#endif +#if VIXL_GENERATE_SIMULATOR_INSTRUCTIONS_VALUE + #warning "Generating Simulator instructions without Simulator support." +#endif +#endif -#define VIXL_ALIGNMENT_EXCEPTION() printf("ALIGNMENT EXCEPTION\t"); VIXL_ABORT() +#ifdef USE_SIMULATOR + #error "Please see the release notes for USE_SIMULATOR." +#endif #endif // VIXL_GLOBALS_H diff --git a/qemu/disas/libvixl/vixl/invalset.h b/qemu/disas/libvixl/vixl/invalset.h new file mode 100644 index 000000000..ffdc0237b --- /dev/null +++ b/qemu/disas/libvixl/vixl/invalset.h @@ -0,0 +1,775 @@ +// Copyright 2015, ARM Limited +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// +// * Redistributions of source code must retain the above copyright notice, +// this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above copyright notice, +// this list of conditions and the following disclaimer in the documentation +// and/or other materials provided with the distribution. +// * Neither the name of ARM Limited nor the names of its contributors may be +// used to endorse or promote products derived from this software without +// specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND +// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE +// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, +// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +#ifndef VIXL_INVALSET_H_ +#define VIXL_INVALSET_H_ + +#include <string.h> + +#include <algorithm> +#include <vector> + +#include "vixl/globals.h" + +namespace vixl { + +// We define a custom data structure template and its iterator as `std` +// containers do not fit the performance requirements for some of our use cases. +// +// The structure behaves like an iterable unordered set with special properties +// and restrictions. "InvalSet" stands for "Invalidatable Set". +// +// Restrictions and requirements: +// - Adding an element already present in the set is illegal. In debug mode, +// this is checked at insertion time. +// - The templated class `ElementType` must provide comparison operators so that +// `std::sort()` can be used. +// - A key must be available to represent invalid elements. +// - Elements with an invalid key must compare higher or equal to any other +// element. +// +// Use cases and performance considerations: +// Our use cases present two specificities that allow us to design this +// structure to provide fast insertion *and* fast search and deletion +// operations: +// - Elements are (generally) inserted in order (sorted according to their key). +// - A key is available to mark elements as invalid (deleted). +// The backing `std::vector` allows for fast insertions. When +// searching for an element we ensure the elements are sorted (this is generally +// the case) and perform a binary search. When deleting an element we do not +// free the associated memory immediately. Instead, an element to be deleted is +// marked with the 'invalid' key. Other methods of the container take care of +// ignoring entries marked as invalid. +// To avoid the overhead of the `std::vector` container when only few entries +// are used, a number of elements are preallocated. + +// 'ElementType' and 'KeyType' are respectively the types of the elements and +// their key. The structure only reclaims memory when safe to do so, if the +// number of elements that can be reclaimed is greater than `RECLAIM_FROM` and +// greater than `<total number of elements> / RECLAIM_FACTOR. +#define TEMPLATE_INVALSET_P_DECL \ + class ElementType, \ + unsigned N_PREALLOCATED_ELEMENTS, \ + class KeyType, \ + KeyType INVALID_KEY, \ + size_t RECLAIM_FROM, \ + unsigned RECLAIM_FACTOR + +#define TEMPLATE_INVALSET_P_DEF \ +ElementType, N_PREALLOCATED_ELEMENTS, \ +KeyType, INVALID_KEY, RECLAIM_FROM, RECLAIM_FACTOR + +template<class S> class InvalSetIterator; // Forward declaration. + +template<TEMPLATE_INVALSET_P_DECL> class InvalSet { + public: + InvalSet(); + ~InvalSet(); + + static const size_t kNPreallocatedElements = N_PREALLOCATED_ELEMENTS; + static const KeyType kInvalidKey = INVALID_KEY; + + // It is illegal to insert an element already present in the set. + void insert(const ElementType& element); + + // Looks for the specified element in the set and - if found - deletes it. + void erase(const ElementType& element); + + // This indicates the number of (valid) elements stored in this set. + size_t size() const; + + // Returns true if no elements are stored in the set. + // Note that this does not mean the the backing storage is empty: it can still + // contain invalid elements. + bool empty() const; + + void clear(); + + const ElementType min_element(); + + // This returns the key of the minimum element in the set. + KeyType min_element_key(); + + static bool IsValid(const ElementType& element); + static KeyType Key(const ElementType& element); + static void SetKey(ElementType* element, KeyType key); + + protected: + // Returns a pointer to the element in vector_ if it was found, or NULL + // otherwise. + ElementType* Search(const ElementType& element); + + // The argument *must* point to an element stored in *this* set. + // This function is not allowed to move elements in the backing vector + // storage. + void EraseInternal(ElementType* element); + + // The elements in the range searched must be sorted. + ElementType* BinarySearch(const ElementType& element, + ElementType* start, + ElementType* end) const; + + // Sort the elements. + enum SortType { + // The 'hard' version guarantees that invalid elements are moved to the end + // of the container. + kHardSort, + // The 'soft' version only guarantees that the elements will be sorted. + // Invalid elements may still be present anywhere in the set. + kSoftSort + }; + void Sort(SortType sort_type); + + // Delete the elements that have an invalid key. The complexity is linear + // with the size of the vector. + void Clean(); + + const ElementType Front() const; + const ElementType Back() const; + + // Delete invalid trailing elements and return the last valid element in the + // set. + const ElementType CleanBack(); + + // Returns a pointer to the start or end of the backing storage. + const ElementType* StorageBegin() const; + const ElementType* StorageEnd() const; + ElementType* StorageBegin(); + ElementType* StorageEnd(); + + // Returns the index of the element within the backing storage. The element + // must belong to the backing storage. + size_t ElementIndex(const ElementType* element) const; + + // Returns the element at the specified index in the backing storage. + const ElementType* ElementAt(size_t index) const; + ElementType* ElementAt(size_t index); + + static const ElementType* FirstValidElement(const ElementType* from, + const ElementType* end); + + void CacheMinElement(); + const ElementType CachedMinElement() const; + + bool ShouldReclaimMemory() const; + void ReclaimMemory(); + + bool IsUsingVector() const { return vector_ != NULL; } + void set_sorted(bool sorted) { sorted_ = sorted; } + + // We cache some data commonly required by users to improve performance. + // We cannot cache pointers to elements as we do not control the backing + // storage. + bool valid_cached_min_; + size_t cached_min_index_; // Valid iff `valid_cached_min_` is true. + KeyType cached_min_key_; // Valid iff `valid_cached_min_` is true. + + // Indicates whether the elements are sorted. + bool sorted_; + + // This represents the number of (valid) elements in this set. + size_t size_; + + // The backing storage is either the array of preallocated elements or the + // vector. The structure starts by using the preallocated elements, and + // transitions (permanently) to using the vector once more than + // kNPreallocatedElements are used. + // Elements are only invalidated when using the vector. The preallocated + // storage always only contains valid elements. + ElementType preallocated_[kNPreallocatedElements]; + std::vector<ElementType>* vector_; + +#ifdef VIXL_DEBUG + // Iterators acquire and release this monitor. While a set is acquired, + // certain operations are illegal to ensure that the iterator will + // correctly iterate over the elements in the set. + int monitor_; + int monitor() const { return monitor_; } + void Acquire() { monitor_++; } + void Release() { + monitor_--; + VIXL_ASSERT(monitor_ >= 0); + } +#endif + + friend class InvalSetIterator<InvalSet<TEMPLATE_INVALSET_P_DEF> >; + typedef ElementType _ElementType; + typedef KeyType _KeyType; +}; + + +template<class S> class InvalSetIterator { + private: + // Redefine types to mirror the associated set types. + typedef typename S::_ElementType ElementType; + typedef typename S::_KeyType KeyType; + + public: + explicit InvalSetIterator(S* inval_set); + ~InvalSetIterator(); + + ElementType* Current() const; + void Advance(); + bool Done() const; + + // Mark this iterator as 'done'. + void Finish(); + + // Delete the current element and advance the iterator to point to the next + // element. + void DeleteCurrentAndAdvance(); + + static bool IsValid(const ElementType& element); + static KeyType Key(const ElementType& element); + + protected: + void MoveToValidElement(); + + // Indicates if the iterator is looking at the vector or at the preallocated + // elements. + const bool using_vector_; + // Used when looking at the preallocated elements, or in debug mode when using + // the vector to track how many times the iterator has advanced. + size_t index_; + typename std::vector<ElementType>::iterator iterator_; + S* inval_set_; +}; + + +template<TEMPLATE_INVALSET_P_DECL> +InvalSet<TEMPLATE_INVALSET_P_DEF>::InvalSet() + : valid_cached_min_(false), + sorted_(true), size_(0), vector_(NULL) { +#ifdef VIXL_DEBUG + monitor_ = 0; +#endif +} + + +template<TEMPLATE_INVALSET_P_DECL> +InvalSet<TEMPLATE_INVALSET_P_DEF>::~InvalSet() { + VIXL_ASSERT(monitor_ == 0); + delete vector_; +} + + +template<TEMPLATE_INVALSET_P_DECL> +void InvalSet<TEMPLATE_INVALSET_P_DEF>::insert(const ElementType& element) { + VIXL_ASSERT(monitor() == 0); + VIXL_ASSERT(IsValid(element)); + VIXL_ASSERT(Search(element) == NULL); + set_sorted(empty() || (sorted_ && (element > CleanBack()))); + if (IsUsingVector()) { + vector_->push_back(element); + } else { + if (size_ < kNPreallocatedElements) { + preallocated_[size_] = element; + } else { + // Transition to using the vector. + vector_ = new std::vector<ElementType>(preallocated_, + preallocated_ + size_); + vector_->push_back(element); + } + } + size_++; + + if (valid_cached_min_ && (element < min_element())) { + cached_min_index_ = IsUsingVector() ? vector_->size() - 1 : size_ - 1; + cached_min_key_ = Key(element); + valid_cached_min_ = true; + } + + if (ShouldReclaimMemory()) { + ReclaimMemory(); + } +} + + +template<TEMPLATE_INVALSET_P_DECL> +void InvalSet<TEMPLATE_INVALSET_P_DEF>::erase(const ElementType& element) { + VIXL_ASSERT(monitor() == 0); + VIXL_ASSERT(IsValid(element)); + ElementType* local_element = Search(element); + if (local_element != NULL) { + EraseInternal(local_element); + } +} + + +template<TEMPLATE_INVALSET_P_DECL> +ElementType* InvalSet<TEMPLATE_INVALSET_P_DEF>::Search( + const ElementType& element) { + VIXL_ASSERT(monitor() == 0); + if (empty()) { + return NULL; + } + if (ShouldReclaimMemory()) { + ReclaimMemory(); + } + if (!sorted_) { + Sort(kHardSort); + } + if (!valid_cached_min_) { + CacheMinElement(); + } + return BinarySearch(element, ElementAt(cached_min_index_), StorageEnd()); +} + + +template<TEMPLATE_INVALSET_P_DECL> +size_t InvalSet<TEMPLATE_INVALSET_P_DEF>::size() const { + return size_; +} + + +template<TEMPLATE_INVALSET_P_DECL> +bool InvalSet<TEMPLATE_INVALSET_P_DEF>::empty() const { + return size_ == 0; +} + + +template<TEMPLATE_INVALSET_P_DECL> +void InvalSet<TEMPLATE_INVALSET_P_DEF>::clear() { + VIXL_ASSERT(monitor() == 0); + size_ = 0; + if (IsUsingVector()) { + vector_->clear(); + } + set_sorted(true); + valid_cached_min_ = false; +} + + +template<TEMPLATE_INVALSET_P_DECL> +const ElementType InvalSet<TEMPLATE_INVALSET_P_DEF>::min_element() { + VIXL_ASSERT(monitor() == 0); + VIXL_ASSERT(!empty()); + CacheMinElement(); + return *ElementAt(cached_min_index_); +} + + +template<TEMPLATE_INVALSET_P_DECL> +KeyType InvalSet<TEMPLATE_INVALSET_P_DEF>::min_element_key() { + VIXL_ASSERT(monitor() == 0); + if (valid_cached_min_) { + return cached_min_key_; + } else { + return Key(min_element()); + } +} + + +template<TEMPLATE_INVALSET_P_DECL> +bool InvalSet<TEMPLATE_INVALSET_P_DEF>::IsValid(const ElementType& element) { + return Key(element) != kInvalidKey; +} + + +template<TEMPLATE_INVALSET_P_DECL> +void InvalSet<TEMPLATE_INVALSET_P_DEF>::EraseInternal(ElementType* element) { + // Note that this function must be safe even while an iterator has acquired + // this set. + VIXL_ASSERT(element != NULL); + size_t deleted_index = ElementIndex(element); + if (IsUsingVector()) { + VIXL_ASSERT((&(vector_->front()) <= element) && + (element <= &(vector_->back()))); + SetKey(element, kInvalidKey); + } else { + VIXL_ASSERT((preallocated_ <= element) && + (element < (preallocated_ + kNPreallocatedElements))); + ElementType* end = preallocated_ + kNPreallocatedElements; + size_t copy_size = sizeof(*element) * (end - element - 1); + memmove(element, element + 1, copy_size); + } + size_--; + + if (valid_cached_min_ && + (deleted_index == cached_min_index_)) { + if (sorted_ && !empty()) { + const ElementType* min = FirstValidElement(element, StorageEnd()); + cached_min_index_ = ElementIndex(min); + cached_min_key_ = Key(*min); + valid_cached_min_ = true; + } else { + valid_cached_min_ = false; + } + } +} + + +template<TEMPLATE_INVALSET_P_DECL> +ElementType* InvalSet<TEMPLATE_INVALSET_P_DEF>::BinarySearch( + const ElementType& element, ElementType* start, ElementType* end) const { + if (start == end) { + return NULL; + } + VIXL_ASSERT(sorted_); + VIXL_ASSERT(start < end); + VIXL_ASSERT(!empty()); + + // Perform a binary search through the elements while ignoring invalid + // elements. + ElementType* elements = start; + size_t low = 0; + size_t high = (end - start) - 1; + while (low < high) { + // Find valid bounds. + while (!IsValid(elements[low]) && (low < high)) ++low; + while (!IsValid(elements[high]) && (low < high)) --high; + VIXL_ASSERT(low <= high); + // Avoid overflow when computing the middle index. + size_t middle = low / 2 + high / 2 + (low & high & 1); + if ((middle == low) || (middle == high)) { + break; + } + while (!IsValid(elements[middle]) && (middle < high - 1)) ++middle; + while (!IsValid(elements[middle]) && (low + 1 < middle)) --middle; + if (!IsValid(elements[middle])) { + break; + } + if (elements[middle] < element) { + low = middle; + } else { + high = middle; + } + } + + if (elements[low] == element) return &elements[low]; + if (elements[high] == element) return &elements[high]; + return NULL; +} + + +template<TEMPLATE_INVALSET_P_DECL> +void InvalSet<TEMPLATE_INVALSET_P_DEF>::Sort(SortType sort_type) { + VIXL_ASSERT(monitor() == 0); + if (sort_type == kSoftSort) { + if (sorted_) { + return; + } + } + if (empty()) { + return; + } + + Clean(); + std::sort(StorageBegin(), StorageEnd()); + + set_sorted(true); + cached_min_index_ = 0; + cached_min_key_ = Key(Front()); + valid_cached_min_ = true; +} + + +template<TEMPLATE_INVALSET_P_DECL> +void InvalSet<TEMPLATE_INVALSET_P_DEF>::Clean() { + VIXL_ASSERT(monitor() == 0); + if (empty() || !IsUsingVector()) { + return; + } + // Manually iterate through the vector storage to discard invalid elements. + ElementType* start = &(vector_->front()); + ElementType* end = start + vector_->size(); + ElementType* c = start; + ElementType* first_invalid; + ElementType* first_valid; + ElementType* next_invalid; + + while (c < end && IsValid(*c)) { c++; } + first_invalid = c; + + while (c < end) { + while (c < end && !IsValid(*c)) { c++; } + first_valid = c; + while (c < end && IsValid(*c)) { c++; } + next_invalid = c; + + ptrdiff_t n_moved_elements = (next_invalid - first_valid); + memmove(first_invalid, first_valid, n_moved_elements * sizeof(*c)); + first_invalid = first_invalid + n_moved_elements; + c = next_invalid; + } + + // Delete the trailing invalid elements. + vector_->erase(vector_->begin() + (first_invalid - start), vector_->end()); + VIXL_ASSERT(vector_->size() == size_); + + if (sorted_) { + valid_cached_min_ = true; + cached_min_index_ = 0; + cached_min_key_ = Key(*ElementAt(0)); + } else { + valid_cached_min_ = false; + } +} + + +template<TEMPLATE_INVALSET_P_DECL> +const ElementType InvalSet<TEMPLATE_INVALSET_P_DEF>::Front() const { + VIXL_ASSERT(!empty()); + return IsUsingVector() ? vector_->front() : preallocated_[0]; +} + + +template<TEMPLATE_INVALSET_P_DECL> +const ElementType InvalSet<TEMPLATE_INVALSET_P_DEF>::Back() const { + VIXL_ASSERT(!empty()); + return IsUsingVector() ? vector_->back() : preallocated_[size_ - 1]; +} + + +template<TEMPLATE_INVALSET_P_DECL> +const ElementType InvalSet<TEMPLATE_INVALSET_P_DEF>::CleanBack() { + VIXL_ASSERT(monitor() == 0); + if (IsUsingVector()) { + // Delete the invalid trailing elements. + typename std::vector<ElementType>::reverse_iterator it = vector_->rbegin(); + while (!IsValid(*it)) { + it++; + } + vector_->erase(it.base(), vector_->end()); + } + return Back(); +} + + +template<TEMPLATE_INVALSET_P_DECL> +const ElementType* InvalSet<TEMPLATE_INVALSET_P_DEF>::StorageBegin() const { + return IsUsingVector() ? &(vector_->front()) : preallocated_; +} + + +template<TEMPLATE_INVALSET_P_DECL> +const ElementType* InvalSet<TEMPLATE_INVALSET_P_DEF>::StorageEnd() const { + return IsUsingVector() ? &(vector_->back()) + 1 : preallocated_ + size_; +} + + +template<TEMPLATE_INVALSET_P_DECL> +ElementType* InvalSet<TEMPLATE_INVALSET_P_DEF>::StorageBegin() { + return IsUsingVector() ? &(vector_->front()) : preallocated_; +} + + +template<TEMPLATE_INVALSET_P_DECL> +ElementType* InvalSet<TEMPLATE_INVALSET_P_DEF>::StorageEnd() { + return IsUsingVector() ? &(vector_->back()) + 1 : preallocated_ + size_; +} + + +template<TEMPLATE_INVALSET_P_DECL> +size_t InvalSet<TEMPLATE_INVALSET_P_DEF>::ElementIndex( + const ElementType* element) const { + VIXL_ASSERT((StorageBegin() <= element) && (element < StorageEnd())); + return element - StorageBegin(); +} + + +template<TEMPLATE_INVALSET_P_DECL> +const ElementType* InvalSet<TEMPLATE_INVALSET_P_DEF>::ElementAt( + size_t index) const { + VIXL_ASSERT( + (IsUsingVector() && (index < vector_->size())) || (index < size_)); + return StorageBegin() + index; +} + +template<TEMPLATE_INVALSET_P_DECL> +ElementType* InvalSet<TEMPLATE_INVALSET_P_DEF>::ElementAt(size_t index) { + VIXL_ASSERT( + (IsUsingVector() && (index < vector_->size())) || (index < size_)); + return StorageBegin() + index; +} + +template<TEMPLATE_INVALSET_P_DECL> +const ElementType* InvalSet<TEMPLATE_INVALSET_P_DEF>::FirstValidElement( + const ElementType* from, const ElementType* end) { + while ((from < end) && !IsValid(*from)) { + from++; + } + return from; +} + + +template<TEMPLATE_INVALSET_P_DECL> +void InvalSet<TEMPLATE_INVALSET_P_DEF>::CacheMinElement() { + VIXL_ASSERT(monitor() == 0); + VIXL_ASSERT(!empty()); + + if (valid_cached_min_) { + return; + } + + if (sorted_) { + const ElementType* min = FirstValidElement(StorageBegin(), StorageEnd()); + cached_min_index_ = ElementIndex(min); + cached_min_key_ = Key(*min); + valid_cached_min_ = true; + } else { + Sort(kHardSort); + } + VIXL_ASSERT(valid_cached_min_); +} + + +template<TEMPLATE_INVALSET_P_DECL> +bool InvalSet<TEMPLATE_INVALSET_P_DEF>::ShouldReclaimMemory() const { + if (!IsUsingVector()) { + return false; + } + size_t n_invalid_elements = vector_->size() - size_; + return (n_invalid_elements > RECLAIM_FROM) && + (n_invalid_elements > vector_->size() / RECLAIM_FACTOR); +} + + +template<TEMPLATE_INVALSET_P_DECL> +void InvalSet<TEMPLATE_INVALSET_P_DEF>::ReclaimMemory() { + VIXL_ASSERT(monitor() == 0); + Clean(); +} + + +template<class S> +InvalSetIterator<S>::InvalSetIterator(S* inval_set) + : using_vector_((inval_set != NULL) && inval_set->IsUsingVector()), + index_(0), + inval_set_(inval_set) { + if (inval_set != NULL) { + inval_set->Sort(S::kSoftSort); +#ifdef VIXL_DEBUG + inval_set->Acquire(); +#endif + if (using_vector_) { + iterator_ = typename std::vector<ElementType>::iterator( + inval_set_->vector_->begin()); + } + MoveToValidElement(); + } +} + + +template<class S> +InvalSetIterator<S>::~InvalSetIterator() { +#ifdef VIXL_DEBUG + if (inval_set_ != NULL) { + inval_set_->Release(); + } +#endif +} + + +template<class S> +typename S::_ElementType* InvalSetIterator<S>::Current() const { + VIXL_ASSERT(!Done()); + if (using_vector_) { + return &(*iterator_); + } else { + return &(inval_set_->preallocated_[index_]); + } +} + + +template<class S> +void InvalSetIterator<S>::Advance() { + VIXL_ASSERT(!Done()); + if (using_vector_) { + iterator_++; +#ifdef VIXL_DEBUG + index_++; +#endif + MoveToValidElement(); + } else { + index_++; + } +} + + +template<class S> +bool InvalSetIterator<S>::Done() const { + if (using_vector_) { + bool done = (iterator_ == inval_set_->vector_->end()); + VIXL_ASSERT(done == (index_ == inval_set_->size())); + return done; + } else { + return index_ == inval_set_->size(); + } +} + + +template<class S> +void InvalSetIterator<S>::Finish() { + VIXL_ASSERT(inval_set_->sorted_); + if (using_vector_) { + iterator_ = inval_set_->vector_->end(); + } + index_ = inval_set_->size(); +} + + +template<class S> +void InvalSetIterator<S>::DeleteCurrentAndAdvance() { + if (using_vector_) { + inval_set_->EraseInternal(&(*iterator_)); + MoveToValidElement(); + } else { + inval_set_->EraseInternal(inval_set_->preallocated_ + index_); + } +} + + +template<class S> +bool InvalSetIterator<S>::IsValid(const ElementType& element) { + return S::IsValid(element); +} + + +template<class S> +typename S::_KeyType InvalSetIterator<S>::Key(const ElementType& element) { + return S::Key(element); +} + + +template<class S> +void InvalSetIterator<S>::MoveToValidElement() { + if (using_vector_) { + while ((iterator_ != inval_set_->vector_->end()) && !IsValid(*iterator_)) { + iterator_++; + } + } else { + VIXL_ASSERT(inval_set_->empty() || IsValid(inval_set_->preallocated_[0])); + // Nothing to do. + } +} + +#undef TEMPLATE_INVALSET_P_DECL +#undef TEMPLATE_INVALSET_P_DEF + +} // namespace vixl + +#endif // VIXL_INVALSET_H_ diff --git a/qemu/disas/libvixl/platform.h b/qemu/disas/libvixl/vixl/platform.h index de2b110cc..ab588f07f 100644 --- a/qemu/disas/libvixl/platform.h +++ b/qemu/disas/libvixl/vixl/platform.h @@ -1,4 +1,4 @@ -// Copyright 2013, ARM Limited +// Copyright 2014, ARM Limited // All rights reserved. // // Redistribution and use in source and binary forms, with or without diff --git a/qemu/disas/libvixl/vixl/utils.cc b/qemu/disas/libvixl/vixl/utils.cc new file mode 100644 index 000000000..3b8bd75fb --- /dev/null +++ b/qemu/disas/libvixl/vixl/utils.cc @@ -0,0 +1,142 @@ +// Copyright 2015, ARM Limited +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// +// * Redistributions of source code must retain the above copyright notice, +// this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above copyright notice, +// this list of conditions and the following disclaimer in the documentation +// and/or other materials provided with the distribution. +// * Neither the name of ARM Limited nor the names of its contributors may be +// used to endorse or promote products derived from this software without +// specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND +// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE +// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, +// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +#include "vixl/utils.h" +#include <stdio.h> + +namespace vixl { + +uint32_t float_to_rawbits(float value) { + uint32_t bits = 0; + memcpy(&bits, &value, 4); + return bits; +} + + +uint64_t double_to_rawbits(double value) { + uint64_t bits = 0; + memcpy(&bits, &value, 8); + return bits; +} + + +float rawbits_to_float(uint32_t bits) { + float value = 0.0; + memcpy(&value, &bits, 4); + return value; +} + + +double rawbits_to_double(uint64_t bits) { + double value = 0.0; + memcpy(&value, &bits, 8); + return value; +} + + +uint32_t float_sign(float val) { + uint32_t rawbits = float_to_rawbits(val); + return unsigned_bitextract_32(31, 31, rawbits); +} + + +uint32_t float_exp(float val) { + uint32_t rawbits = float_to_rawbits(val); + return unsigned_bitextract_32(30, 23, rawbits); +} + + +uint32_t float_mantissa(float val) { + uint32_t rawbits = float_to_rawbits(val); + return unsigned_bitextract_32(22, 0, rawbits); +} + + +uint32_t double_sign(double val) { + uint64_t rawbits = double_to_rawbits(val); + return static_cast<uint32_t>(unsigned_bitextract_64(63, 63, rawbits)); +} + + +uint32_t double_exp(double val) { + uint64_t rawbits = double_to_rawbits(val); + return static_cast<uint32_t>(unsigned_bitextract_64(62, 52, rawbits)); +} + + +uint64_t double_mantissa(double val) { + uint64_t rawbits = double_to_rawbits(val); + return unsigned_bitextract_64(51, 0, rawbits); +} + + +float float_pack(uint32_t sign, uint32_t exp, uint32_t mantissa) { + uint32_t bits = (sign << 31) | (exp << 23) | mantissa; + return rawbits_to_float(bits); +} + + +double double_pack(uint64_t sign, uint64_t exp, uint64_t mantissa) { + uint64_t bits = (sign << 63) | (exp << 52) | mantissa; + return rawbits_to_double(bits); +} + + +int float16classify(float16 value) { + uint16_t exponent_max = (1 << 5) - 1; + uint16_t exponent_mask = exponent_max << 10; + uint16_t mantissa_mask = (1 << 10) - 1; + + uint16_t exponent = (value & exponent_mask) >> 10; + uint16_t mantissa = value & mantissa_mask; + if (exponent == 0) { + if (mantissa == 0) { + return FP_ZERO; + } + return FP_SUBNORMAL; + } else if (exponent == exponent_max) { + if (mantissa == 0) { + return FP_INFINITE; + } + return FP_NAN; + } + return FP_NORMAL; +} + + +unsigned CountClearHalfWords(uint64_t imm, unsigned reg_size) { + VIXL_ASSERT((reg_size % 8) == 0); + int count = 0; + for (unsigned i = 0; i < (reg_size / 16); i++) { + if ((imm & 0xffff) == 0) { + count++; + } + imm >>= 16; + } + return count; +} + +} // namespace vixl diff --git a/qemu/disas/libvixl/utils.h b/qemu/disas/libvixl/vixl/utils.h index b4406263a..5ab134e24 100644 --- a/qemu/disas/libvixl/utils.h +++ b/qemu/disas/libvixl/vixl/utils.h @@ -1,4 +1,4 @@ -// Copyright 2013, ARM Limited +// Copyright 2015, ARM Limited // All rights reserved. // // Redistribution and use in source and binary forms, with or without @@ -27,16 +27,17 @@ #ifndef VIXL_UTILS_H #define VIXL_UTILS_H -#include <math.h> #include <string.h> -#include "globals.h" +#include <cmath> +#include "vixl/globals.h" +#include "vixl/compiler-intrinsics.h" namespace vixl { // Macros for compile-time format checking. -#if defined(__GNUC__) +#if GCC_VERSION_OR_NEWER(4, 4, 0) #define PRINTF_CHECK(format_index, varargs_index) \ - __attribute__((format(printf, format_index, varargs_index))) + __attribute__((format(gnu_printf, format_index, varargs_index))) #else #define PRINTF_CHECK(format_index, varargs_index) #endif @@ -53,9 +54,9 @@ inline bool is_uintn(unsigned n, int64_t x) { return !(x >> n); } -inline unsigned truncate_to_intn(unsigned n, int64_t x) { +inline uint32_t truncate_to_intn(unsigned n, int64_t x) { VIXL_ASSERT((0 < n) && (n < 64)); - return (x & ((INT64_C(1) << n) - 1)); + return static_cast<uint32_t>(x & ((INT64_C(1) << n) - 1)); } #define INT_1_TO_63_LIST(V) \ @@ -73,7 +74,7 @@ inline bool is_int##N(int64_t x) { return is_intn(N, x); } #define DECLARE_IS_UINT_N(N) \ inline bool is_uint##N(int64_t x) { return is_uintn(N, x); } #define DECLARE_TRUNCATE_TO_INT_N(N) \ -inline int truncate_to_int##N(int x) { return truncate_to_intn(N, x); } +inline uint32_t truncate_to_int##N(int x) { return truncate_to_intn(N, x); } INT_1_TO_63_LIST(DECLARE_IS_INT_N) INT_1_TO_63_LIST(DECLARE_IS_UINT_N) INT_1_TO_63_LIST(DECLARE_TRUNCATE_TO_INT_N) @@ -104,12 +105,24 @@ uint64_t double_to_rawbits(double value); float rawbits_to_float(uint32_t bits); double rawbits_to_double(uint64_t bits); +uint32_t float_sign(float val); +uint32_t float_exp(float val); +uint32_t float_mantissa(float val); +uint32_t double_sign(double val); +uint32_t double_exp(double val); +uint64_t double_mantissa(double val); + +float float_pack(uint32_t sign, uint32_t exp, uint32_t mantissa); +double double_pack(uint64_t sign, uint64_t exp, uint64_t mantissa); + +// An fpclassify() function for 16-bit half-precision floats. +int float16classify(float16 value); // NaN tests. inline bool IsSignallingNaN(double num) { const uint64_t kFP64QuietNaNMask = UINT64_C(0x0008000000000000); uint64_t raw = double_to_rawbits(num); - if (isnan(num) && ((raw & kFP64QuietNaNMask) == 0)) { + if (std::isnan(num) && ((raw & kFP64QuietNaNMask) == 0)) { return true; } return false; @@ -119,30 +132,37 @@ inline bool IsSignallingNaN(double num) { inline bool IsSignallingNaN(float num) { const uint32_t kFP32QuietNaNMask = 0x00400000; uint32_t raw = float_to_rawbits(num); - if (isnan(num) && ((raw & kFP32QuietNaNMask) == 0)) { + if (std::isnan(num) && ((raw & kFP32QuietNaNMask) == 0)) { return true; } return false; } +inline bool IsSignallingNaN(float16 num) { + const uint16_t kFP16QuietNaNMask = 0x0200; + return (float16classify(num) == FP_NAN) && + ((num & kFP16QuietNaNMask) == 0); +} + + template <typename T> inline bool IsQuietNaN(T num) { - return isnan(num) && !IsSignallingNaN(num); + return std::isnan(num) && !IsSignallingNaN(num); } // Convert the NaN in 'num' to a quiet NaN. inline double ToQuietNaN(double num) { const uint64_t kFP64QuietNaNMask = UINT64_C(0x0008000000000000); - VIXL_ASSERT(isnan(num)); + VIXL_ASSERT(std::isnan(num)); return rawbits_to_double(double_to_rawbits(num) | kFP64QuietNaNMask); } inline float ToQuietNaN(float num) { const uint32_t kFP32QuietNaNMask = 0x00400000; - VIXL_ASSERT(isnan(num)); + VIXL_ASSERT(std::isnan(num)); return rawbits_to_float(float_to_rawbits(num) | kFP32QuietNaNMask); } @@ -158,16 +178,71 @@ inline float FusedMultiplyAdd(float op1, float op2, float a) { } -// Bit counting. -int CountLeadingZeros(uint64_t value, int width); -int CountLeadingSignBits(int64_t value, int width); -int CountTrailingZeros(uint64_t value, int width); -int CountSetBits(uint64_t value, int width); -uint64_t LowestSetBit(uint64_t value); -bool IsPowerOf2(int64_t value); +inline uint64_t LowestSetBit(uint64_t value) { + return value & -value; +} + + +template<typename T> +inline int HighestSetBitPosition(T value) { + VIXL_ASSERT(value != 0); + return (sizeof(value) * 8 - 1) - CountLeadingZeros(value); +} + + +template<typename V> +inline int WhichPowerOf2(V value) { + VIXL_ASSERT(IsPowerOf2(value)); + return CountTrailingZeros(value); +} + unsigned CountClearHalfWords(uint64_t imm, unsigned reg_size); + +template <typename T> +T ReverseBits(T value) { + VIXL_ASSERT((sizeof(value) == 1) || (sizeof(value) == 2) || + (sizeof(value) == 4) || (sizeof(value) == 8)); + T result = 0; + for (unsigned i = 0; i < (sizeof(value) * 8); i++) { + result = (result << 1) | (value & 1); + value >>= 1; + } + return result; +} + + +template <typename T> +T ReverseBytes(T value, int block_bytes_log2) { + VIXL_ASSERT((sizeof(value) == 4) || (sizeof(value) == 8)); + VIXL_ASSERT((1U << block_bytes_log2) <= sizeof(value)); + // Split the 64-bit value into an 8-bit array, where b[0] is the least + // significant byte, and b[7] is the most significant. + uint8_t bytes[8]; + uint64_t mask = UINT64_C(0xff00000000000000); + for (int i = 7; i >= 0; i--) { + bytes[i] = (static_cast<uint64_t>(value) & mask) >> (i * 8); + mask >>= 8; + } + + // Permutation tables for REV instructions. + // permute_table[0] is used by REV16_x, REV16_w + // permute_table[1] is used by REV32_x, REV_w + // permute_table[2] is used by REV_x + VIXL_ASSERT((0 < block_bytes_log2) && (block_bytes_log2 < 4)); + static const uint8_t permute_table[3][8] = { {6, 7, 4, 5, 2, 3, 0, 1}, + {4, 5, 6, 7, 0, 1, 2, 3}, + {0, 1, 2, 3, 4, 5, 6, 7} }; + T result = 0; + for (int i = 0; i < 8; i++) { + result <<= 8; + result |= bytes[permute_table[block_bytes_log2 - 1][i]]; + } + return result; +} + + // Pointer alignment // TODO: rename/refactor to make it specific to instructions. template<typename T> |