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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#include <unistd.h> |
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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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#include <sys/time.h> |
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#include <time.h> |
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|
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/***** arm *****/ |
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|
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//#ifdef __arm__ |
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#if 0 |
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static unsigned long |
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oil_profile_stamp_xscale(void) |
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{ |
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unsigned int ts; |
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__asm__ __volatile__ ( |
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" mrc p14, 0, %0, c1, c0, 0 \n" |
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: "=r" (ts)); |
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return ts; |
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} |
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#endif |
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|
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static void |
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oil_cpu_arm_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_cpuinfo_line(cpuinfo, "Features"); |
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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, "edsp") == 0) { |
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OIL_DEBUG ("cpu feature %s", *f); |
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oil_cpu_flags |= OIL_IMPL_FLAG_EDSP; |
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} |
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if (strcmp (*f, "vfp") == 0) { |
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OIL_DEBUG ("cpu feature %s", *f); |
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oil_cpu_flags |= OIL_IMPL_FLAG_VFP; |
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} |
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|
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free (*f); |
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} |
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free (flags); |
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free (cpuinfo_flags); |
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} |
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|
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static char * |
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get_proc_cpuinfo (void) |
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{ |
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char *cpuinfo; |
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int fd; |
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int n; |
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|
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cpuinfo = malloc(4096); |
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if (cpuinfo == NULL) return NULL; |
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|
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fd = open("/proc/cpuinfo", O_RDONLY); |
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if (fd < 0) { |
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104 |
free (cpuinfo); |
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return NULL; |
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106 |
} |
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107 |
|
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n = read(fd, cpuinfo, 4095); |
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109 |
if (n < 0) { |
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110 |
free (cpuinfo); |
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111 |
close (fd); |
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112 |
return NULL; |
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113 |
} |
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cpuinfo[n] = 0; |
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115 |
|
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116 |
close (fd); |
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117 |
|
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118 |
return cpuinfo; |
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119 |
} |
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120 |
#ifdef __SYMBIAN32__ |
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121 |
EXPORT_C |
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#endif |
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123 |
void |
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124 |
oil_cpu_detect_arch(void) |
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125 |
{ |
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126 |
#ifdef __linux__ |
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int arm_implementer = 0; |
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int arm_arch; |
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char *cpuinfo; |
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char *s; |
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131 |
|
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cpuinfo = get_proc_cpuinfo(); |
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if (cpuinfo == NULL) return; |
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134 |
|
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s = get_cpuinfo_line(cpuinfo, "CPU implementer"); |
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136 |
if (s) { |
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arm_implementer = strtoul (s, NULL, 0); |
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138 |
free(s); |
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139 |
} |
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140 |
|
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141 |
switch(arm_implementer) { |
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142 |
case 0x69: /* Intel */ |
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143 |
case 0x41: /* ARM */ |
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/* ARM chips are known to not have timestamping available from |
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* user space */ |
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146 |
break; |
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147 |
default: |
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148 |
break; |
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149 |
} |
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150 |
|
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s = get_cpuinfo_line(cpuinfo, "CPU architecture"); |
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152 |
if (s) { |
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arm_arch = strtoul (s, NULL, 0); |
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if (arm_arch >= 6) |
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oil_cpu_flags |= OIL_IMPL_FLAG_ARM6; |
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156 |
free(s); |
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157 |
} |
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158 |
|
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159 |
oil_cpu_arm_getflags_cpuinfo (cpuinfo); |
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160 |
free (cpuinfo); |
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161 |
#endif |
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162 |
} |
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163 |
//#endif |
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164 |
|
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165 |