diff options
author | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-05-18 13:18:31 +0300 |
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committer | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-05-18 13:42:15 +0300 |
commit | 437fd90c0250dee670290f9b714253671a990160 (patch) | |
tree | b871786c360704244a07411c69fb58da9ead4a06 /qemu/disas/libvixl/utils.h | |
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/utils.h')
-rw-r--r-- | qemu/disas/libvixl/utils.h | 211 |
1 files changed, 0 insertions, 211 deletions
diff --git a/qemu/disas/libvixl/utils.h b/qemu/disas/libvixl/utils.h deleted file mode 100644 index b4406263a..000000000 --- a/qemu/disas/libvixl/utils.h +++ /dev/null @@ -1,211 +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_UTILS_H -#define VIXL_UTILS_H - -#include <math.h> -#include <string.h> -#include "globals.h" - -namespace vixl { - -// Macros for compile-time format checking. -#if defined(__GNUC__) -#define PRINTF_CHECK(format_index, varargs_index) \ - __attribute__((format(printf, format_index, varargs_index))) -#else -#define PRINTF_CHECK(format_index, varargs_index) -#endif - -// Check number width. -inline bool is_intn(unsigned n, int64_t x) { - VIXL_ASSERT((0 < n) && (n < 64)); - int64_t limit = INT64_C(1) << (n - 1); - return (-limit <= x) && (x < limit); -} - -inline bool is_uintn(unsigned n, int64_t x) { - VIXL_ASSERT((0 < n) && (n < 64)); - return !(x >> n); -} - -inline unsigned truncate_to_intn(unsigned n, int64_t x) { - VIXL_ASSERT((0 < n) && (n < 64)); - return (x & ((INT64_C(1) << n) - 1)); -} - -#define INT_1_TO_63_LIST(V) \ -V(1) V(2) V(3) V(4) V(5) V(6) V(7) V(8) \ -V(9) V(10) V(11) V(12) V(13) V(14) V(15) V(16) \ -V(17) V(18) V(19) V(20) V(21) V(22) V(23) V(24) \ -V(25) V(26) V(27) V(28) V(29) V(30) V(31) V(32) \ -V(33) V(34) V(35) V(36) V(37) V(38) V(39) V(40) \ -V(41) V(42) V(43) V(44) V(45) V(46) V(47) V(48) \ -V(49) V(50) V(51) V(52) V(53) V(54) V(55) V(56) \ -V(57) V(58) V(59) V(60) V(61) V(62) V(63) - -#define DECLARE_IS_INT_N(N) \ -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); } -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) -#undef DECLARE_IS_INT_N -#undef DECLARE_IS_UINT_N -#undef DECLARE_TRUNCATE_TO_INT_N - -// Bit field extraction. -inline uint32_t unsigned_bitextract_32(int msb, int lsb, uint32_t x) { - return (x >> lsb) & ((1 << (1 + msb - lsb)) - 1); -} - -inline uint64_t unsigned_bitextract_64(int msb, int lsb, uint64_t x) { - return (x >> lsb) & ((static_cast<uint64_t>(1) << (1 + msb - lsb)) - 1); -} - -inline int32_t signed_bitextract_32(int msb, int lsb, int32_t x) { - return (x << (31 - msb)) >> (lsb + 31 - msb); -} - -inline int64_t signed_bitextract_64(int msb, int lsb, int64_t x) { - return (x << (63 - msb)) >> (lsb + 63 - msb); -} - -// Floating point representation. -uint32_t float_to_rawbits(float value); -uint64_t double_to_rawbits(double value); -float rawbits_to_float(uint32_t bits); -double rawbits_to_double(uint64_t bits); - - -// 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)) { - return true; - } - return false; -} - - -inline bool IsSignallingNaN(float num) { - const uint32_t kFP32QuietNaNMask = 0x00400000; - uint32_t raw = float_to_rawbits(num); - if (isnan(num) && ((raw & kFP32QuietNaNMask) == 0)) { - return true; - } - return false; -} - - -template <typename T> -inline bool IsQuietNaN(T num) { - return 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)); - return rawbits_to_double(double_to_rawbits(num) | kFP64QuietNaNMask); -} - - -inline float ToQuietNaN(float num) { - const uint32_t kFP32QuietNaNMask = 0x00400000; - VIXL_ASSERT(isnan(num)); - return rawbits_to_float(float_to_rawbits(num) | kFP32QuietNaNMask); -} - - -// Fused multiply-add. -inline double FusedMultiplyAdd(double op1, double op2, double a) { - return fma(op1, op2, a); -} - - -inline float FusedMultiplyAdd(float op1, float op2, float a) { - return fmaf(op1, op2, 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); - -unsigned CountClearHalfWords(uint64_t imm, unsigned reg_size); - -// Pointer alignment -// TODO: rename/refactor to make it specific to instructions. -template<typename T> -bool IsWordAligned(T pointer) { - VIXL_ASSERT(sizeof(pointer) == sizeof(intptr_t)); // NOLINT(runtime/sizeof) - return ((intptr_t)(pointer) & 3) == 0; -} - -// Increment a pointer (up to 64 bits) until it has the specified alignment. -template<class T> -T AlignUp(T pointer, size_t alignment) { - // Use C-style casts to get static_cast behaviour for integral types (T), and - // reinterpret_cast behaviour for other types. - - uint64_t pointer_raw = (uint64_t)pointer; - VIXL_STATIC_ASSERT(sizeof(pointer) <= sizeof(pointer_raw)); - - size_t align_step = (alignment - pointer_raw) % alignment; - VIXL_ASSERT((pointer_raw + align_step) % alignment == 0); - - return (T)(pointer_raw + align_step); -} - -// Decrement a pointer (up to 64 bits) until it has the specified alignment. -template<class T> -T AlignDown(T pointer, size_t alignment) { - // Use C-style casts to get static_cast behaviour for integral types (T), and - // reinterpret_cast behaviour for other types. - - uint64_t pointer_raw = (uint64_t)pointer; - VIXL_STATIC_ASSERT(sizeof(pointer) <= sizeof(pointer_raw)); - - size_t align_step = pointer_raw % alignment; - VIXL_ASSERT((pointer_raw - align_step) % alignment == 0); - - return (T)(pointer_raw - align_step); -} - -} // namespace vixl - -#endif // VIXL_UTILS_H |