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Side by Side Diff: third_party/libwebp/dsp/cpu.c

Issue 653803003: libwebp: update to 0.4.2-rc2 (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 6 years, 2 months ago
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1 // Copyright 2011 Google Inc. All Rights Reserved. 1 // Copyright 2011 Google Inc. All Rights Reserved.
2 // 2 //
3 // Use of this source code is governed by a BSD-style license 3 // Use of this source code is governed by a BSD-style license
4 // that can be found in the COPYING file in the root of the source 4 // that can be found in the COPYING file in the root of the source
5 // tree. An additional intellectual property rights grant can be found 5 // tree. An additional intellectual property rights grant can be found
6 // in the file PATENTS. All contributing project authors may 6 // in the file PATENTS. All contributing project authors may
7 // be found in the AUTHORS file in the root of the source tree. 7 // be found in the AUTHORS file in the root of the source tree.
8 // ----------------------------------------------------------------------------- 8 // -----------------------------------------------------------------------------
9 // 9 //
10 // CPU detection 10 // CPU detection
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50 const uint32_t ecx = 0; 50 const uint32_t ecx = 0;
51 uint32_t eax, edx; 51 uint32_t eax, edx;
52 // Use the raw opcode for xgetbv for compatibility with older toolchains. 52 // Use the raw opcode for xgetbv for compatibility with older toolchains.
53 __asm__ volatile ( 53 __asm__ volatile (
54 ".byte 0x0f, 0x01, 0xd0\n" 54 ".byte 0x0f, 0x01, 0xd0\n"
55 : "=a"(eax), "=d"(edx) : "c" (ecx)); 55 : "=a"(eax), "=d"(edx) : "c" (ecx));
56 return ((uint64_t)edx << 32) | eax; 56 return ((uint64_t)edx << 32) | eax;
57 } 57 }
58 #elif defined(_MSC_FULL_VER) && _MSC_FULL_VER >= 160040219 // >= VS2010 SP1 58 #elif defined(_MSC_FULL_VER) && _MSC_FULL_VER >= 160040219 // >= VS2010 SP1
59 #define xgetbv() _xgetbv(0) 59 #define xgetbv() _xgetbv(0)
60 #elif defined(_M_IX86) 60 #elif defined(_MSC_VER) && defined(_M_IX86)
61 static WEBP_INLINE uint64_t xgetbv(void) { 61 static WEBP_INLINE uint64_t xgetbv(void) {
62 uint32_t eax_, edx_; 62 uint32_t eax_, edx_;
63 __asm { 63 __asm {
64 xor ecx, ecx // ecx = 0 64 xor ecx, ecx // ecx = 0
65 // Use the raw opcode for xgetbv for compatibility with older toolchains. 65 // Use the raw opcode for xgetbv for compatibility with older toolchains.
66 __asm _emit 0x0f __asm _emit 0x01 __asm _emit 0xd0 66 __asm _emit 0x0f __asm _emit 0x01 __asm _emit 0xd0
67 mov eax_, eax 67 mov eax_, eax
68 mov edx_, edx 68 mov edx_, edx
69 } 69 }
70 return ((uint64_t)edx_ << 32) | eax_; 70 return ((uint64_t)edx_ << 32) | eax_;
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121 #elif defined(WEBP_USE_MIPS32) 121 #elif defined(WEBP_USE_MIPS32)
122 static int mipsCPUInfo(CPUFeature feature) { 122 static int mipsCPUInfo(CPUFeature feature) {
123 (void)feature; 123 (void)feature;
124 return 1; 124 return 1;
125 } 125 }
126 VP8CPUInfo VP8GetCPUInfo = mipsCPUInfo; 126 VP8CPUInfo VP8GetCPUInfo = mipsCPUInfo;
127 #else 127 #else
128 VP8CPUInfo VP8GetCPUInfo = NULL; 128 VP8CPUInfo VP8GetCPUInfo = NULL;
129 #endif 129 #endif
130 130
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