1/* 2 * Mesa 3-D graphics library 3 * 4 * Copyright (C) 2009 VMware, Inc. All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included 14 * in all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 25 26#include <stdlib.h> 27#include <string.h> 28#include <assert.h> 29 30#include "main/cpuinfo.h" 31 32 33/** 34 * This function should be called before the various "cpu_has_foo" macros 35 * are used. 36 */ 37void 38_mesa_get_cpu_features(void) 39{ 40#if defined USE_X86_ASM || defined USE_X86_64_ASM 41 _mesa_get_x86_features(); 42#endif 43} 44 45 46/** 47 * Return a string describing the CPU architexture and extensions that 48 * Mesa is using (such as SSE or Altivec). 49 * \return information string, free it with free() 50 */ 51char * 52_mesa_get_cpu_string(void) 53{ 54#define MAX_STRING 50 55 char *buffer; 56 57 buffer = malloc(MAX_STRING); 58 if (!buffer) 59 return NULL; 60 61 buffer[0] = 0; 62 63#ifdef USE_X86_ASM 64 65 if (_mesa_x86_cpu_features) { 66 strcat(buffer, "x86"); 67 } 68 69# ifdef USE_MMX_ASM 70 if (cpu_has_mmx) { 71 strcat(buffer, (cpu_has_mmxext) ? "/MMX+" : "/MMX"); 72 } 73# endif 74# ifdef USE_3DNOW_ASM 75 if (cpu_has_3dnow) { 76 strcat(buffer, (cpu_has_3dnowext) ? "/3DNow!+" : "/3DNow!"); 77 } 78# endif 79# ifdef USE_SSE_ASM 80 if (cpu_has_xmm) { 81 strcat(buffer, (cpu_has_xmm2) ? "/SSE2" : "/SSE"); 82 } 83# endif 84 85#elif defined(USE_SPARC_ASM) 86 87 strcat(buffer, "SPARC"); 88 89#endif 90 91 assert(strlen(buffer) < MAX_STRING); 92 93 return buffer; 94} 95