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Diffstat (limited to 'qemu/disas/libvixl/a64/decoder-a64.h')
| -rw-r--r-- | qemu/disas/libvixl/a64/decoder-a64.h | 239 |
1 files changed, 0 insertions, 239 deletions
diff --git a/qemu/disas/libvixl/a64/decoder-a64.h b/qemu/disas/libvixl/a64/decoder-a64.h deleted file mode 100644 index fd08d6c1f..000000000 --- a/qemu/disas/libvixl/a64/decoder-a64.h +++ /dev/null @@ -1,239 +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_DECODER_A64_H_ -#define VIXL_A64_DECODER_A64_H_ - -#include <list> - -#include "globals.h" -#include "a64/instructions-a64.h" - - -// List macro containing all visitors needed by the decoder class. - -#define VISITOR_LIST(V) \ - V(PCRelAddressing) \ - V(AddSubImmediate) \ - V(LogicalImmediate) \ - V(MoveWideImmediate) \ - V(Bitfield) \ - V(Extract) \ - V(UnconditionalBranch) \ - V(UnconditionalBranchToRegister) \ - V(CompareBranch) \ - V(TestBranch) \ - V(ConditionalBranch) \ - V(System) \ - V(Exception) \ - V(LoadStorePairPostIndex) \ - V(LoadStorePairOffset) \ - V(LoadStorePairPreIndex) \ - V(LoadStorePairNonTemporal) \ - V(LoadLiteral) \ - V(LoadStoreUnscaledOffset) \ - V(LoadStorePostIndex) \ - V(LoadStorePreIndex) \ - V(LoadStoreRegisterOffset) \ - V(LoadStoreUnsignedOffset) \ - V(LoadStoreExclusive) \ - V(LogicalShifted) \ - V(AddSubShifted) \ - V(AddSubExtended) \ - V(AddSubWithCarry) \ - V(ConditionalCompareRegister) \ - V(ConditionalCompareImmediate) \ - V(ConditionalSelect) \ - V(DataProcessing1Source) \ - V(DataProcessing2Source) \ - V(DataProcessing3Source) \ - V(FPCompare) \ - V(FPConditionalCompare) \ - V(FPConditionalSelect) \ - V(FPImmediate) \ - V(FPDataProcessing1Source) \ - V(FPDataProcessing2Source) \ - V(FPDataProcessing3Source) \ - V(FPIntegerConvert) \ - V(FPFixedPointConvert) \ - V(Unallocated) \ - V(Unimplemented) - -namespace vixl { - -// The Visitor interface. Disassembler and simulator (and other tools) -// must provide implementations for all of these functions. -class DecoderVisitor { - public: - enum VisitorConstness { - kConstVisitor, - kNonConstVisitor - }; - explicit DecoderVisitor(VisitorConstness constness = kConstVisitor) - : constness_(constness) {} - - virtual ~DecoderVisitor() {} - - #define DECLARE(A) virtual void Visit##A(const Instruction* instr) = 0; - VISITOR_LIST(DECLARE) - #undef DECLARE - - bool IsConstVisitor() const { return constness_ == kConstVisitor; } - Instruction* MutableInstruction(const Instruction* instr) { - VIXL_ASSERT(!IsConstVisitor()); - return const_cast<Instruction*>(instr); - } - - private: - const VisitorConstness constness_; -}; - - -class Decoder { - public: - Decoder() {} - - // Top-level wrappers around the actual decoding function. - void Decode(const Instruction* instr) { - std::list<DecoderVisitor*>::iterator it; - for (it = visitors_.begin(); it != visitors_.end(); it++) { - VIXL_ASSERT((*it)->IsConstVisitor()); - } - DecodeInstruction(instr); - } - void Decode(Instruction* instr) { - DecodeInstruction(const_cast<const Instruction*>(instr)); - } - - // Register a new visitor class with the decoder. - // Decode() will call the corresponding visitor method from all registered - // visitor classes when decoding reaches the leaf node of the instruction - // decode tree. - // Visitors are called in order. - // A visitor can be registered multiple times. - // - // d.AppendVisitor(V1); - // d.AppendVisitor(V2); - // d.PrependVisitor(V2); - // d.AppendVisitor(V3); - // - // d.Decode(i); - // - // will call in order visitor methods in V2, V1, V2, V3. - void AppendVisitor(DecoderVisitor* visitor); - void PrependVisitor(DecoderVisitor* visitor); - // These helpers register `new_visitor` before or after the first instance of - // `registered_visiter` in the list. - // So if - // V1, V2, V1, V2 - // are registered in this order in the decoder, calls to - // d.InsertVisitorAfter(V3, V1); - // d.InsertVisitorBefore(V4, V2); - // will yield the order - // V1, V3, V4, V2, V1, V2 - // - // For more complex modifications of the order of registered visitors, one can - // directly access and modify the list of visitors via the `visitors()' - // accessor. - void InsertVisitorBefore(DecoderVisitor* new_visitor, - DecoderVisitor* registered_visitor); - void InsertVisitorAfter(DecoderVisitor* new_visitor, - DecoderVisitor* registered_visitor); - - // Remove all instances of a previously registered visitor class from the list - // of visitors stored by the decoder. - void RemoveVisitor(DecoderVisitor* visitor); - - #define DECLARE(A) void Visit##A(const Instruction* instr); - VISITOR_LIST(DECLARE) - #undef DECLARE - - - std::list<DecoderVisitor*>* visitors() { return &visitors_; } - - private: - // Decodes an instruction and calls the visitor functions registered with the - // Decoder class. - void DecodeInstruction(const Instruction* instr); - - // Decode the PC relative addressing instruction, and call the corresponding - // visitors. - // On entry, instruction bits 27:24 = 0x0. - void DecodePCRelAddressing(const Instruction* instr); - - // Decode the add/subtract immediate instruction, and call the correspoding - // visitors. - // On entry, instruction bits 27:24 = 0x1. - void DecodeAddSubImmediate(const Instruction* instr); - - // Decode the branch, system command, and exception generation parts of - // the instruction tree, and call the corresponding visitors. - // On entry, instruction bits 27:24 = {0x4, 0x5, 0x6, 0x7}. - void DecodeBranchSystemException(const Instruction* instr); - - // Decode the load and store parts of the instruction tree, and call - // the corresponding visitors. - // On entry, instruction bits 27:24 = {0x8, 0x9, 0xC, 0xD}. - void DecodeLoadStore(const Instruction* instr); - - // Decode the logical immediate and move wide immediate parts of the - // instruction tree, and call the corresponding visitors. - // On entry, instruction bits 27:24 = 0x2. - void DecodeLogical(const Instruction* instr); - - // Decode the bitfield and extraction parts of the instruction tree, - // and call the corresponding visitors. - // On entry, instruction bits 27:24 = 0x3. - void DecodeBitfieldExtract(const Instruction* instr); - - // Decode the data processing parts of the instruction tree, and call the - // corresponding visitors. - // On entry, instruction bits 27:24 = {0x1, 0xA, 0xB}. - void DecodeDataProcessing(const Instruction* instr); - - // Decode the floating point parts of the instruction tree, and call the - // corresponding visitors. - // On entry, instruction bits 27:24 = {0xE, 0xF}. - void DecodeFP(const Instruction* instr); - - // 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); - - // 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); - - private: - // Visitors are registered in a list. - std::list<DecoderVisitor*> visitors_; -}; - -} // namespace vixl - -#endif // VIXL_A64_DECODER_A64_H_ |