src/mesa/x86/common_x86.c

   1
   2 /*
   3  * Mesa 3-D graphics library
   4  * Version:  3.1
   5  *
   6  * Copyright (C) 1999  Brian Paul   All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included
  16  * in all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  22  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  23  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26
  27 /*
  28  *  Check CPU capabilities & initialize optimized funtions for this particular
  29  *   processor.
  30  *
  31  *  Written by Holger Waechtler <holger@akaflieg.extern.tu-berlin.de>
  32  */
  33
  34 #include <stdlib.h>
  35 #include <stdio.h>
  36 #include "common_x86asm.h"
  37
  38 int gl_x86_cpu_features = 0;
  39
  40
  41 void gl_init_all_x86_asm (void)
  42 {
  43 #ifdef USE_X86_ASM
  44    gl_x86_cpu_features = gl_identify_x86_cpu_features ();
  45    gl_x86_cpu_features |= GL_CPU_AnyX86;
  46
  47    if (getenv("MESA_NO_ASM") != 0)
  48       gl_x86_cpu_features = 0;
  49
  50    if (gl_x86_cpu_features & GL_CPU_GenuineIntel) {
  51       fprintf (stderr, "GenuineIntel cpu detected.\n");
  52    }
  53
  54    if (gl_x86_cpu_features) {
  55       gl_init_x86_asm_transforms ();
  56    }
  57
  58 #ifdef USE_MMX_ASM
  59    if (gl_x86_cpu_features & GL_CPU_MMX) {
  60       char *s = getenv( "MESA_NO_MMX" );
  61       if (s == NULL) {
  62          fprintf (stderr, "MMX cpu detected.\n");
  63       } else {
  64          gl_x86_cpu_features &= (~GL_CPU_MMX);
  65       }
  66    }
  67 #endif
  68
  69
  70 #ifdef USE_3DNOW_ASM
  71    if (gl_x86_cpu_features & GL_CPU_3Dnow) {
  72       char *s = getenv( "MESA_NO_3DNOW" );
  73       if (s == NULL) {
  74          fprintf (stderr, "3Dnow cpu detected.\n");
  75          gl_init_3dnow_asm_transforms ();
  76       } else {
  77          gl_x86_cpu_features &= (~GL_CPU_3Dnow);
  78       }
  79    }
  80 #endif
  81
  82 #endif
  83 }
  84