rtasm_cpu.c

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00001 /**************************************************************************
00002  *
00003  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
00004  * All Rights Reserved.
00005  *
00006  * Permission is hereby granted, free of charge, to any person obtaining a
00007  * copy of this software and associated documentation files (the
00008  * "Software"), to deal in the Software without restriction, including
00009  * without limitation the rights to use, copy, modify, merge, publish,
00010  * distribute, sub license, and/or sell copies of the Software, and to
00011  * permit persons to whom the Software is furnished to do so, subject to
00012  * the following conditions:
00013  *
00014  * The above copyright notice and this permission notice (including the
00015  * next paragraph) shall be included in all copies or substantial portions
00016  * of the Software.
00017  *
00018  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
00019  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00020  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
00021  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
00022  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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00024  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00025  *
00026  **************************************************************************/
00027 
00028 
00029 #include "pipe/p_debug.h"
00030 #include "rtasm_cpu.h"
00031 
00032 
00033 #if defined(PIPE_ARCH_X86)
00034 static boolean rtasm_sse_enabled(void)
00035 {
00036    static boolean firsttime = 1;
00037    static boolean enabled;
00038    
00039    /* This gets called quite often at the moment:
00040     */
00041    if (firsttime) {
00042       enabled =  !debug_get_bool_option("GALLIUM_NOSSE", FALSE);
00043       firsttime = FALSE;
00044    }
00045    return enabled;
00046 }
00047 #endif
00048 
00049 int rtasm_cpu_has_sse(void)
00050 {
00051    /* FIXME: actually detect this at run-time */
00052 #if defined(PIPE_ARCH_X86)
00053    return rtasm_sse_enabled();
00054 #else
00055    return 0;
00056 #endif
00057 }
00058 
00059 int rtasm_cpu_has_sse2(void) 
00060 {
00061    /* FIXME: actually detect this at run-time */
00062 #if defined(PIPE_ARCH_X86)
00063    return rtasm_sse_enabled();
00064 #else
00065    return 0;
00066 #endif
00067 }

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