author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 16 Apr 2010 16:46:38 +0300 | |
changeset 18 | 47c74d1534e1 |
permissions | -rw-r--r-- |
18
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/* |
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* LIBOIL - Library of Optimized Inner Loops |
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* Copyright (c) 2003,2004 David A. Schleef <ds@schleef.org> |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, |
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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|
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#ifdef HAVE_CONFIG_H |
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#include "config.h" |
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#endif |
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#include <liboil/liboilfunction.h> |
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#include <liboil/liboildebug.h> |
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#include <liboil/liboilcpu.h> |
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#include <liboil/liboilfault.h> |
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#include <liboil/liboilutils.h> |
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|
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#ifdef HAVE_UNISTD_H |
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#include <unistd.h> |
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#endif |
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#include <fcntl.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <stdio.h> |
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#include <setjmp.h> |
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#include <signal.h> |
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#ifdef HAVE_SYS_TIME_H |
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#include <sys/time.h> |
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#endif |
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#include <time.h> |
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|
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#if defined(__FreeBSD__) || defined(__APPLE__) |
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#include <sys/types.h> |
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#include <sys/sysctl.h> |
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#endif |
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|
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#ifdef __sun |
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#include <sys/auxv.h> |
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#endif |
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|
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/***** i386, amd64 *****/ |
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|
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#if defined(__sun) |
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#define USE_I386_GETISAX |
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#else |
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#define USE_I386_CPUID |
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#endif |
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|
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|
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#ifdef USE_I386_CPUINFO |
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static void |
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oil_cpu_i386_getflags_cpuinfo (char *cpuinfo) |
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{ |
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char *cpuinfo_flags; |
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char **flags; |
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char **f; |
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|
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cpuinfo_flags = get_tag_value (cpuinfo, "flags"); |
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if (cpuinfo_flags == NULL) { |
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free (cpuinfo); |
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return; |
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} |
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|
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flags = strsplit(cpuinfo_flags); |
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for (f = flags; *f; f++) { |
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if (strcmp (*f, "cmov") == 0) { |
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OIL_DEBUG ("cpu flag %s", *f); |
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oil_cpu_flags |= OIL_IMPL_FLAG_CMOV; |
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} |
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if (strcmp (*f, "mmx") == 0) { |
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OIL_DEBUG ("cpu flag %s", *f); |
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oil_cpu_flags |= OIL_IMPL_FLAG_MMX; |
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} |
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if (strcmp (*f, "sse") == 0) { |
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OIL_DEBUG ("cpu flag %s", *f); |
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oil_cpu_flags |= OIL_IMPL_FLAG_SSE; |
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} |
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if (strcmp (*f, "mmxext") == 0) { |
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OIL_DEBUG ("cpu flag %s", *f); |
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oil_cpu_flags |= OIL_IMPL_FLAG_MMXEXT; |
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} |
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if (strcmp (*f, "sse2") == 0) { |
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102 |
OIL_DEBUG ("cpu flag %s", *f); |
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|
103 |
oil_cpu_flags |= OIL_IMPL_FLAG_SSE2; |
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|
104 |
oil_cpu_flags |= OIL_IMPL_FLAG_MMXEXT; |
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105 |
} |
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|
106 |
if (strcmp (*f, "3dnow") == 0) { |
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|
107 |
OIL_DEBUG ("cpu flag %s", *f); |
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|
108 |
oil_cpu_flags |= OIL_IMPL_FLAG_3DNOW; |
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109 |
} |
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110 |
if (strcmp (*f, "3dnowext") == 0) { |
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|
111 |
OIL_DEBUG ("cpu flag %s", *f); |
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oil_cpu_flags |= OIL_IMPL_FLAG_3DNOWEXT; |
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113 |
} |
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114 |
if (strcmp (*f, "sse3") == 0) { |
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115 |
OIL_DEBUG ("cpu flag %s", *f); |
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oil_cpu_flags |= OIL_IMPL_FLAG_SSE3; |
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oil_cpu_flags |= OIL_IMPL_FLAG_SSE2; |
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118 |
oil_cpu_flags |= OIL_IMPL_FLAG_MMXEXT; |
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119 |
} |
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120 |
if (strcmp (*f, "ssse3") == 0) { |
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OIL_DEBUG ("cpu flag %s", *f); |
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122 |
oil_cpu_flags |= OIL_IMPL_FLAG_SSSE3; |
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123 |
oil_cpu_flags |= OIL_IMPL_FLAG_SSE3; |
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124 |
oil_cpu_flags |= OIL_IMPL_FLAG_SSE2; |
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oil_cpu_flags |= OIL_IMPL_FLAG_MMXEXT; |
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126 |
} |
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127 |
|
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128 |
free (*f); |
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129 |
} |
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130 |
free (flags); |
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131 |
free (cpuinfo); |
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132 |
free (cpuinfo_flags); |
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133 |
} |
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134 |
#endif |
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135 |
|
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136 |
#ifdef HAVE_GCC_ASM |
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137 |
static unsigned long |
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138 |
oil_profile_stamp_rdtsc(void) |
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139 |
{ |
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140 |
unsigned long ts; |
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141 |
__asm__ __volatile__("rdtsc\n" : "=a" (ts) : : "edx"); |
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142 |
return ts; |
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143 |
} |
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144 |
#endif |
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145 |
|
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146 |
#ifdef USE_I386_CPUID |
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147 |
#ifdef __i386__ |
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148 |
static void |
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149 |
get_cpuid (uint32_t op, uint32_t *a, uint32_t *b, uint32_t *c, uint32_t *d) |
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150 |
{ |
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151 |
/* |
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152 |
__asm__ ( |
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153 |
" pushl %%ebx\n" |
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154 |
" cpuid\n" |
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155 |
" mov %%ebx, %%esi\n" |
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156 |
" popl %%ebx\n" |
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157 |
: "=a" (*a), "=S" (*b), "=c" (*c), "=d" (*d) |
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158 |
: "0" (op)); |
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159 |
*/ |
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160 |
} |
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161 |
#endif |
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162 |
|
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163 |
#ifdef __amd64__ |
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164 |
static void |
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165 |
get_cpuid (uint32_t op, uint32_t *a, uint32_t *b, uint32_t *c, uint32_t *d) |
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166 |
{ |
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167 |
__asm__ ( |
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168 |
" pushq %%rbx\n" |
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169 |
" cpuid\n" |
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170 |
" mov %%ebx, %%esi\n" |
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171 |
" popq %%rbx\n" |
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172 |
: "=a" (*a), "=S" (*b), "=c" (*c), "=d" (*d) |
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173 |
: "0" (op)); |
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174 |
} |
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175 |
#endif |
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176 |
|
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177 |
static void |
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178 |
test_cpuid (void *ignored) |
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179 |
{ |
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180 |
uint32_t eax, ebx, ecx, edx; |
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181 |
|
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182 |
get_cpuid (0x00000000, &eax, &ebx, &ecx, &edx); |
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183 |
} |
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184 |
|
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185 |
static void |
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186 |
oil_cpu_detect_cpuid (void) |
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187 |
{ |
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188 |
uint32_t eax, ebx, ecx, edx; |
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189 |
uint32_t level; |
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190 |
char vendor[13] = { 0 }; |
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191 |
int ret; |
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192 |
|
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193 |
oil_fault_check_enable (); |
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194 |
ret = oil_fault_check_try(test_cpuid, NULL); |
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195 |
oil_fault_check_disable (); |
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196 |
if (!ret) { |
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197 |
/* CPU thinks cpuid is an illegal instruction. */ |
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198 |
return; |
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199 |
} |
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200 |
|
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201 |
get_cpuid (0x00000000, &level, (uint32_t *)(vendor+0), |
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202 |
(uint32_t *)(vendor+8), (uint32_t *)(vendor+4)); |
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|
203 |
|
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204 |
OIL_DEBUG("cpuid %d %s", level, vendor); |
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205 |
|
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if (level < 1) { |
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return; |
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} |
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209 |
|
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get_cpuid (0x00000001, &eax, &ebx, &ecx, &edx); |
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211 |
|
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#ifdef HAVE_GCC_ASM |
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if (edx & (1<<4)) { |
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_oil_profile_stamp = oil_profile_stamp_rdtsc; |
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} |
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#endif |
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217 |
|
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/* Intel flags */ |
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if (edx & (1<<15)) { |
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oil_cpu_flags |= OIL_IMPL_FLAG_CMOV; |
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} |
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if (edx & (1<<23)) { |
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oil_cpu_flags |= OIL_IMPL_FLAG_MMX; |
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} |
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if (edx & (1<<25)) { |
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oil_cpu_flags |= OIL_IMPL_FLAG_SSE; |
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} |
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if (edx & (1<<26)) { |
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oil_cpu_flags |= OIL_IMPL_FLAG_SSE2; |
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oil_cpu_flags |= OIL_IMPL_FLAG_MMXEXT; |
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} |
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if (ecx & (1<<0)) { |
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oil_cpu_flags |= OIL_IMPL_FLAG_SSE3; |
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} |
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235 |
|
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if (memcmp (vendor, "AuthenticAMD", 12) == 0) { |
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get_cpuid (0x80000001, &eax, &ebx, &ecx, &edx); |
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|
238 |
|
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/* AMD flags */ |
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if (edx & (1<<22)) { |
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oil_cpu_flags |= OIL_IMPL_FLAG_MMXEXT; |
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242 |
} |
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if (edx & (1<<31)) { |
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oil_cpu_flags |= OIL_IMPL_FLAG_3DNOW; |
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} |
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246 |
if (edx & (1<<30)) { |
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oil_cpu_flags |= OIL_IMPL_FLAG_3DNOWEXT; |
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248 |
} |
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249 |
|
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get_cpuid (0x80000005, &eax, &ebx, &ecx, &edx); |
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251 |
|
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OIL_INFO("L1 D-cache: %d kbytes, %d-way, %d lines/tag, %d line size", |
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(ecx>>24)&0xff, (ecx>>16)&0xff, (ecx>>8)&0xff, ecx&0xff); |
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OIL_INFO("L1 I-cache: %d kbytes, %d-way, %d lines/tag, %d line size", |
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|
255 |
(edx>>24)&0xff, (edx>>16)&0xff, (edx>>8)&0xff, edx&0xff); |
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|
256 |
|
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get_cpuid (0x80000006, &eax, &ebx, &ecx, &edx); |
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OIL_INFO("L2 cache: %d kbytes, %d assoc, %d lines/tag, %d line size", |
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(ecx>>16)&0xffff, (ecx>>12)&0xf, (ecx>>8)&0xf, ecx&0xff); |
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260 |
} |
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261 |
} |
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262 |
#endif |
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|
263 |
|
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|
264 |
#ifdef USE_I386_GETISAX |
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static void |
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oil_cpu_detect_getisax (void) |
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{ |
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268 |
uint_t ui; |
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|
269 |
|
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getisax (&ui, 1); |
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|
271 |
|
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if (ui & AV_386_CMOV) { |
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oil_cpu_flags |= OIL_IMPL_FLAG_CMOV; |
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|
274 |
} |
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275 |
if (ui & AV_386_MMX) { |
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oil_cpu_flags |= OIL_IMPL_FLAG_MMX; |
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|
277 |
} |
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|
278 |
if (ui & AV_386_SSE) { |
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oil_cpu_flags |= OIL_IMPL_FLAG_SSE; |
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|
280 |
} |
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|
281 |
if (ui & AV_386_SSE2) { |
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|
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oil_cpu_flags |= OIL_IMPL_FLAG_SSE2; |
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|
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oil_cpu_flags |= OIL_IMPL_FLAG_MMXEXT; |
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|
284 |
} |
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|
285 |
if (ui & AV_386_SSE3) { |
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|
286 |
oil_cpu_flags |= OIL_IMPL_FLAG_SSE3; |
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|
287 |
} |
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|
288 |
if (ui & AV_386_AMD_3DNow) { |
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|
289 |
oil_cpu_flags |= OIL_IMPL_FLAG_3DNOW; |
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|
290 |
} |
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|
291 |
if (ui & AV_386_AMD_3DNowx) { |
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|
292 |
oil_cpu_flags |= OIL_IMPL_FLAG_3DNOWEXT; |
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|
293 |
} |
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|
294 |
if (ui & AV_386_AMD_MMX) { |
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|
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oil_cpu_flags |= OIL_IMPL_FLAG_MMXEXT; |
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|
296 |
} |
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|
297 |
} |
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|
298 |
#endif |
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|
299 |
|
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|
300 |
/* Reduce the set of CPU capabilities detected by whatever detection mechanism |
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* was chosen, according to kernel limitations. SSE requires kernel support for |
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302 |
* use. |
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303 |
*/ |
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304 |
static void |
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305 |
oil_cpu_detect_kernel_support (void) |
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{ |
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#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__APPLE__) |
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int ret, enabled; |
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size_t len; |
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len = sizeof(enabled); |
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ret = sysctlbyname("hw.instruction_sse", &enabled, &len, NULL, 0); |
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if (ret || !enabled) { |
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oil_cpu_flags &= ~(OIL_IMPL_FLAG_SSE | OIL_IMPL_FLAG_SSE2 | |
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OIL_IMPL_FLAG_MMXEXT | OIL_IMPL_FLAG_SSE3); |
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} |
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#elif defined(__linux__) |
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/* |
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* Might also want to grow a check for the old RedHat + Linux 2.2 |
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* unmasked SSE FPU exception bug. Other than that, if /proc/cpuinfo |
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* reported SSE, then it's safe. |
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*/ |
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#elif defined(__sun) |
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/* Solaris is OK */ |
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#elif defined(__NetBSD__) |
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/* NetBSD is OK */ |
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#else |
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|
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OIL_WARNING("Operating system is not known to support SSE. " |
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"Assuming it does, which might cause problems"); |
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#if 0 |
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oil_cpu_flags &= ~(OIL_IMPL_FLAG_SSE | OIL_IMPL_FLAG_SSE2 | |
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OIL_IMPL_FLAG_MMXEXT | OIL_IMPL_FLAG_SSE3); |
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#endif |
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#endif |
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} |
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|
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void |
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oil_cpu_detect_arch(void) |
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{ |
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#ifdef USE_I386_CPUID |
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oil_cpu_detect_cpuid (); |
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#endif |
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#ifdef USE_I386_GETISAX |
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oil_cpu_detect_getisax (); |
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#endif |
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#ifdef USE_I386_CPUINFO |
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oil_cpu_detect_cpuinfo (); |
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#endif |
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|
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oil_cpu_detect_kernel_support (); |
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} |
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|
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