workbench/libs/mesa/src/gallium/auxiliary/rtasm/rtasm_cpu.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
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   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
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  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
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  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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  26  **************************************************************************/
  27
  28
  29 #include "util/u_debug.h"
  30 #include "rtasm_cpu.h"
  31
  32
  33 #if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
  34 static boolean rtasm_sse_enabled(void)
  35 {
  36    static boolean firsttime = 1;
  37    static boolean enabled;
  38
  39    /* This gets called quite often at the moment:
  40     */
  41    if (firsttime) {
  42       enabled =  !debug_get_bool_option("GALLIUM_NOSSE", FALSE);
  43       firsttime = FALSE;
  44    }
  45    return enabled;
  46 }
  47 #endif
  48
  49 int rtasm_cpu_has_sse(void)
  50 {
  51    /* FIXME: actually detect this at run-time */
  52 #if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
  53    return rtasm_sse_enabled();
  54 #else
  55    return 0;
  56 #endif
  57 }
  58
  59 int rtasm_cpu_has_sse2(void)
  60 {
  61    /* FIXME: actually detect this at run-time */
  62 #if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
  63    return rtasm_sse_enabled();
  64 #else
  65    return 0;
  66 #endif
  67 }