src/mesa/x86/common_x86.c

   1 /* $Id: common_x86.c,v 1.6 2000/01/25 17:04:47 brianp Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.3
   6  *
   7  * Copyright (C) 1999-2000  Brian Paul   All Rights Reserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included
  17  * in all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  23  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  24  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  */
  26
  27
  28 /*
  29  *  Check CPU capabilities & initialize optimized funtions for this particular
  30  *   processor.
  31  *
  32  *  Written by Holger Waechtler <holger@akaflieg.extern.tu-berlin.de>
  33  *  Changed by Andre Werthmann <wertmann@cs.uni-potsdam.de> for using the
  34  *  new Katmai functions
  35  */
  36
  37 #include <stdlib.h>
  38 #include <stdio.h>
  39 #include "common_x86asm.h"
  40
  41 int gl_x86_cpu_features = 0;
  42
  43 static void message(const char *msg)
  44 {
  45    if (getenv("MESA_DEBUG"))
  46       fprintf(stderr, "%s\n", msg);
  47 }
  48
  49
  50 void gl_init_all_x86_asm (void)
  51 {
  52 #ifdef USE_X86_ASM
  53    gl_x86_cpu_features = gl_identify_x86_cpu_features ();
  54    gl_x86_cpu_features |= GL_CPU_AnyX86;
  55
  56    if (getenv("MESA_NO_ASM") != 0)
  57       gl_x86_cpu_features = 0;
  58
  59    if (gl_x86_cpu_features & GL_CPU_GenuineIntel) {
  60       message("GenuineIntel cpu detected.");
  61    }
  62
  63    if (gl_x86_cpu_features) {
  64       gl_init_x86_asm_transforms ();
  65    }
  66
  67 #ifdef USE_MMX_ASM
  68    if (gl_x86_cpu_features & GL_CPU_MMX) {
  69       char *s = getenv( "MESA_NO_MMX" );
  70       if (s == NULL) {
  71          message("MMX cpu detected.");
  72       } else {
  73          gl_x86_cpu_features &= (~GL_CPU_MMX);
  74       }
  75    }
  76 #endif
  77
  78
  79 #ifdef USE_3DNOW_ASM
  80    if (gl_x86_cpu_features & GL_CPU_3Dnow) {
  81       char *s = getenv( "MESA_NO_3DNOW" );
  82       if (s == NULL) {
  83          message("3Dnow cpu detected.");
  84          gl_init_3dnow_asm_transforms ();
  85       } else {
  86          gl_x86_cpu_features &= (~GL_CPU_3Dnow);
  87       }
  88    }
  89 #endif
  90
  91
  92 #ifdef USE_KATMAI_ASM
  93    if (gl_x86_cpu_features & GL_CPU_Katmai) {
  94       char *s = getenv( "MESA_NO_KATMAI" );
  95       if (s == NULL) {
  96          message("Katmai cpu detected.");
  97          gl_init_katmai_asm_transforms ();
  98       } else {
  99          gl_x86_cpu_features &= (~GL_CPU_Katmai);
 100       }
 101    }
 102 #endif
 103
 104 #endif
 105 }
 106