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Side by Side Diff: source/libvpx/vpx_ports/arm_cpudetect.c

Issue 592203002: libvpx: Pull from upstream (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/libvpx/
Patch Set: Created 6 years, 3 months ago
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1 /* 1 /*
2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved. 2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
3 * 3 *
4 * Use of this source code is governed by a BSD-style license 4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source 5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found 6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may 7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree. 8 * be found in the AUTHORS file in the root of the source tree.
9 */ 9 */
10 10
11 #include <stdlib.h> 11 #include <stdlib.h>
12 #include <string.h> 12 #include <string.h>
13 #include "arm.h" 13 #include "vpx_ports/arm.h"
14 #include "./vpx_config.h"
14 15
15 #ifdef WINAPI_FAMILY 16 #ifdef WINAPI_FAMILY
16 #include <winapifamily.h> 17 #include <winapifamily.h>
17 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) 18 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
18 #define getenv(x) NULL 19 #define getenv(x) NULL
19 #endif 20 #endif
20 #endif 21 #endif
21 22
22 static int arm_cpu_env_flags(int *flags) { 23 static int arm_cpu_env_flags(int *flags) {
23 char *env; 24 char *env;
(...skipping 23 matching lines...) Expand all
47 if (!arm_cpu_env_flags(&flags)) { 48 if (!arm_cpu_env_flags(&flags)) {
48 return flags; 49 return flags;
49 } 50 }
50 mask = arm_cpu_env_mask(); 51 mask = arm_cpu_env_mask();
51 #if HAVE_EDSP 52 #if HAVE_EDSP
52 flags |= HAS_EDSP; 53 flags |= HAS_EDSP;
53 #endif /* HAVE_EDSP */ 54 #endif /* HAVE_EDSP */
54 #if HAVE_MEDIA 55 #if HAVE_MEDIA
55 flags |= HAS_MEDIA; 56 flags |= HAS_MEDIA;
56 #endif /* HAVE_MEDIA */ 57 #endif /* HAVE_MEDIA */
57 #if HAVE_NEON 58 #if HAVE_NEON || HAVE_NEON_ASM
58 flags |= HAS_NEON; 59 flags |= HAS_NEON;
59 #endif /* HAVE_NEON */ 60 #endif /* HAVE_NEON || HAVE_NEON_ASM */
60 return flags & mask; 61 return flags & mask;
61 } 62 }
62 63
63 #elif defined(_MSC_VER) /* end !CONFIG_RUNTIME_CPU_DETECT */ 64 #elif defined(_MSC_VER) /* end !CONFIG_RUNTIME_CPU_DETECT */
64 /*For GetExceptionCode() and EXCEPTION_ILLEGAL_INSTRUCTION.*/ 65 /*For GetExceptionCode() and EXCEPTION_ILLEGAL_INSTRUCTION.*/
65 #define WIN32_LEAN_AND_MEAN 66 #define WIN32_LEAN_AND_MEAN
66 #define WIN32_EXTRA_LEAN 67 #define WIN32_EXTRA_LEAN
67 #include <windows.h> 68 #include <windows.h>
68 69
69 int arm_cpu_caps(void) { 70 int arm_cpu_caps(void) {
(...skipping 10 matching lines...) Expand all
80 #if HAVE_EDSP 81 #if HAVE_EDSP
81 if (mask & HAS_EDSP) { 82 if (mask & HAS_EDSP) {
82 __try { 83 __try {
83 /*PLD [r13]*/ 84 /*PLD [r13]*/
84 __emit(0xF5DDF000); 85 __emit(0xF5DDF000);
85 flags |= HAS_EDSP; 86 flags |= HAS_EDSP;
86 } __except (GetExceptionCode() == EXCEPTION_ILLEGAL_INSTRUCTION) { 87 } __except (GetExceptionCode() == EXCEPTION_ILLEGAL_INSTRUCTION) {
87 /*Ignore exception.*/ 88 /*Ignore exception.*/
88 } 89 }
89 } 90 }
91 #endif /* HAVE_EDSP */
90 #if HAVE_MEDIA 92 #if HAVE_MEDIA
91 if (mask & HAS_MEDIA) 93 if (mask & HAS_MEDIA)
92 __try { 94 __try {
93 /*SHADD8 r3,r3,r3*/ 95 /*SHADD8 r3,r3,r3*/
94 __emit(0xE6333F93); 96 __emit(0xE6333F93);
95 flags |= HAS_MEDIA; 97 flags |= HAS_MEDIA;
96 } __except (GetExceptionCode() == EXCEPTION_ILLEGAL_INSTRUCTION) { 98 } __except (GetExceptionCode() == EXCEPTION_ILLEGAL_INSTRUCTION) {
97 /*Ignore exception.*/ 99 /*Ignore exception.*/
98 } 100 }
99 } 101 }
100 #if HAVE_NEON 102 #endif /* HAVE_MEDIA */
103 #if HAVE_NEON || HAVE_NEON_ASM
101 if (mask &HAS_NEON) { 104 if (mask &HAS_NEON) {
102 __try { 105 __try {
103 /*VORR q0,q0,q0*/ 106 /*VORR q0,q0,q0*/
104 __emit(0xF2200150); 107 __emit(0xF2200150);
105 flags |= HAS_NEON; 108 flags |= HAS_NEON;
106 } __except (GetExceptionCode() == EXCEPTION_ILLEGAL_INSTRUCTION) { 109 } __except (GetExceptionCode() == EXCEPTION_ILLEGAL_INSTRUCTION) {
107 /*Ignore exception.*/ 110 /*Ignore exception.*/
108 } 111 }
109 } 112 }
110 #endif /* HAVE_NEON */ 113 #endif /* HAVE_NEON || HAVE_NEON_ASM */
111 #endif /* HAVE_MEDIA */
112 #endif /* HAVE_EDSP */
113 return flags & mask; 114 return flags & mask;
114 } 115 }
115 116
116 #elif defined(__ANDROID__) /* end _MSC_VER */ 117 #elif defined(__ANDROID__) /* end _MSC_VER */
117 #include <cpu-features.h> 118 #include <cpu-features.h>
118 119
119 int arm_cpu_caps(void) { 120 int arm_cpu_caps(void) {
120 int flags; 121 int flags;
121 int mask; 122 int mask;
122 uint64_t features; 123 uint64_t features;
123 if (!arm_cpu_env_flags(&flags)) { 124 if (!arm_cpu_env_flags(&flags)) {
124 return flags; 125 return flags;
125 } 126 }
126 mask = arm_cpu_env_mask(); 127 mask = arm_cpu_env_mask();
127 features = android_getCpuFeatures(); 128 features = android_getCpuFeatures();
128 129
129 #if HAVE_EDSP 130 #if HAVE_EDSP
130 flags |= HAS_EDSP; 131 flags |= HAS_EDSP;
131 #endif /* HAVE_EDSP */ 132 #endif /* HAVE_EDSP */
132 #if HAVE_MEDIA 133 #if HAVE_MEDIA
133 flags |= HAS_MEDIA; 134 flags |= HAS_MEDIA;
134 #endif /* HAVE_MEDIA */ 135 #endif /* HAVE_MEDIA */
135 #if HAVE_NEON 136 #if HAVE_NEON || HAVE_NEON_ASM
136 if (features & ANDROID_CPU_ARM_FEATURE_NEON) 137 if (features & ANDROID_CPU_ARM_FEATURE_NEON)
137 flags |= HAS_NEON; 138 flags |= HAS_NEON;
138 #endif /* HAVE_NEON */ 139 #endif /* HAVE_NEON || HAVE_NEON_ASM */
139 return flags & mask; 140 return flags & mask;
140 } 141 }
141 142
142 #elif defined(__linux__) /* end __ANDROID__ */ 143 #elif defined(__linux__) /* end __ANDROID__ */
143 144
144 #include <stdio.h> 145 #include <stdio.h>
145 146
146 int arm_cpu_caps(void) { 147 int arm_cpu_caps(void) {
147 FILE *fin; 148 FILE *fin;
148 int flags; 149 int flags;
149 int mask; 150 int mask;
150 if (!arm_cpu_env_flags(&flags)) { 151 if (!arm_cpu_env_flags(&flags)) {
151 return flags; 152 return flags;
152 } 153 }
153 mask = arm_cpu_env_mask(); 154 mask = arm_cpu_env_mask();
154 /* Reading /proc/self/auxv would be easier, but that doesn't work reliably 155 /* Reading /proc/self/auxv would be easier, but that doesn't work reliably
155 * on Android. 156 * on Android.
156 * This also means that detection will fail in Scratchbox. 157 * This also means that detection will fail in Scratchbox.
157 */ 158 */
158 fin = fopen("/proc/cpuinfo", "r"); 159 fin = fopen("/proc/cpuinfo", "r");
159 if (fin != NULL) { 160 if (fin != NULL) {
160 /* 512 should be enough for anybody (it's even enough for all the flags 161 /* 512 should be enough for anybody (it's even enough for all the flags
161 * that x86 has accumulated... so far). 162 * that x86 has accumulated... so far).
162 */ 163 */
163 char buf[512]; 164 char buf[512];
164 while (fgets(buf, 511, fin) != NULL) { 165 while (fgets(buf, 511, fin) != NULL) {
165 #if HAVE_EDSP || HAVE_NEON 166 #if HAVE_EDSP || HAVE_NEON || HAVE_NEON_ASM
166 if (memcmp(buf, "Features", 8) == 0) { 167 if (memcmp(buf, "Features", 8) == 0) {
167 char *p; 168 char *p;
168 #if HAVE_EDSP 169 #if HAVE_EDSP
169 p = strstr(buf, " edsp"); 170 p = strstr(buf, " edsp");
170 if (p != NULL && (p[5] == ' ' || p[5] == '\n')) { 171 if (p != NULL && (p[5] == ' ' || p[5] == '\n')) {
171 flags |= HAS_EDSP; 172 flags |= HAS_EDSP;
172 } 173 }
173 #if HAVE_NEON 174 #endif /* HAVE_EDSP */
175 #if HAVE_NEON || HAVE_NEON_ASM
174 p = strstr(buf, " neon"); 176 p = strstr(buf, " neon");
175 if (p != NULL && (p[5] == ' ' || p[5] == '\n')) { 177 if (p != NULL && (p[5] == ' ' || p[5] == '\n')) {
176 flags |= HAS_NEON; 178 flags |= HAS_NEON;
177 } 179 }
178 #endif /* HAVE_NEON */ 180 #endif /* HAVE_NEON || HAVE_NEON_ASM */
179 #endif /* HAVE_EDSP */
180 } 181 }
181 #endif /* HAVE_EDSP || HAVE_NEON */ 182 #endif /* HAVE_EDSP || HAVE_NEON || HAVE_NEON_ASM */
182 #if HAVE_MEDIA 183 #if HAVE_MEDIA
183 if (memcmp(buf, "CPU architecture:", 17) == 0) { 184 if (memcmp(buf, "CPU architecture:", 17) == 0) {
184 int version; 185 int version;
185 version = atoi(buf + 17); 186 version = atoi(buf + 17);
186 if (version >= 6) { 187 if (version >= 6) {
187 flags |= HAS_MEDIA; 188 flags |= HAS_MEDIA;
188 } 189 }
189 } 190 }
190 #endif /* HAVE_MEDIA */ 191 #endif /* HAVE_MEDIA */
191 } 192 }
192 fclose(fin); 193 fclose(fin);
193 } 194 }
194 return flags & mask; 195 return flags & mask;
195 } 196 }
196 #else /* end __linux__ */ 197 #else /* end __linux__ */
197 #error "--enable-runtime-cpu-detect selected, but no CPU detection method " \ 198 #error "--enable-runtime-cpu-detect selected, but no CPU detection method " \
198 "available for your platform. Reconfigure with --disable-runtime-cpu-detect." 199 "available for your platform. Reconfigure with --disable-runtime-cpu-detect."
199 #endif 200 #endif
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