dll/opengl/mesa/main/cpuinfo.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.5
   4  *
   5  * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 #include <precomp.h>
  26
  27 /**
  28  * This function should be called before the various "cpu_has_foo" macros
  29  * are used.
  30  */
  31 void
  32 _mesa_get_cpu_features(void)
  33 {
  34 #ifdef USE_X86_ASM
  35    _mesa_get_x86_features();
  36 #endif
  37 }
  38
  39
  40 /**
  41  * Return a string describing the CPU architexture and extensions that
  42  * Mesa is using (such as SSE or Altivec).
  43  * \return information string, free it with free()
  44  */
  45 char *
  46 _mesa_get_cpu_string(void)
  47 {
  48 #define MAX_STRING 50
  49    char *buffer;
  50
  51    buffer = (char *) malloc(MAX_STRING);
  52    if (!buffer)
  53       return NULL;
  54
  55    buffer[0] = 0;
  56
  57 #ifdef USE_X86_ASM
  58
  59    if (_mesa_x86_cpu_features) {
  60       strcat(buffer, "x86");
  61    }
  62
  63 # ifdef USE_MMX_ASM
  64    if (cpu_has_mmx) {
  65       strcat(buffer, (cpu_has_mmxext) ? "/MMX+" : "/MMX");
  66    }
  67 # endif
  68 # ifdef USE_3DNOW_ASM
  69    if (cpu_has_3dnow) {
  70       strcat(buffer, (cpu_has_3dnowext) ? "/3DNow!+" : "/3DNow!");
  71    }
  72 # endif
  73 # ifdef USE_SSE_ASM
  74    if (cpu_has_xmm) {
  75       strcat(buffer, (cpu_has_xmm2) ? "/SSE2" : "/SSE");
  76    }
  77 # endif
  78
  79 #elif defined(USE_SPARC_ASM)
  80
  81    strcat(buffer, "SPARC");
  82
  83 #elif defined(USE_PPC_ASM)
  84
  85    if (_mesa_ppc_cpu_features) {
  86       strcat(buffer, (cpu_has_64) ? "PowerPC 64" : "PowerPC");
  87    }
  88
  89 # ifdef USE_VMX_ASM
  90
  91    if (cpu_has_vmx) {
  92       strcat(buffer, "/Altivec");
  93    }
  94
  95 # endif
  96
  97    if (! cpu_has_fpu) {
  98       strcat(buffer, "/No FPU");
  99    }
 100
 101 #endif
 102
 103    assert(strlen(buffer) < MAX_STRING);
 104
 105    return buffer;
 106 }