csutil/processor/processorspecdetection_win.h
00001 /* 00002 Copyright (C) 2007 by Michael Gist 00003 00004 This library is free software; you can redistribute it and/or 00005 modify it under the terms of the GNU Library General Public 00006 License as published by the Free Software Foundation; either 00007 version 2 of the License, or (at your option) any later version. 00008 00009 This library is distributed in the hope that it will be useful, 00010 but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00012 Library General Public License for more details. 00013 00014 You should have received a copy of the GNU Library General Public 00015 License along with this library; if not, write to the Free 00016 Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 00017 */ 00018 00019 #ifndef __PROCESSORSPECDETECTION_WIN_H__ 00020 #define __PROCESSORSPECDETECTION_WIN_H__ 00021 00022 // Not defined in some SDKs. 00023 #ifndef PF_SSE3_INSTRUCTIONS_AVAILABLE 00024 #define PF_SSE3_INSTRUCTIONS_AVAILABLE 13 00025 #endif 00026 00027 namespace Implementation 00028 { 00029 class DetectInstructionsWin 00030 { 00031 public: 00032 00033 uint CheckSupportedInstruction() 00034 { 00035 uint instructionBitMask = 0U; 00036 // We know 64-bit processors on windows will support MMX, SSE and SSE2 instructions. 00037 bool plat64bit = false; 00038 #if defined(CS_PLATFORM_WIN32) && (CS_PROCESSOR_SIZE == 64) 00039 plat64bit = true; 00040 #endif 00041 00042 // Check for instruction sets and set flags. 00043 if(plat64bit || IsProcessorFeaturePresent(PF_MMX_INSTRUCTIONS_AVAILABLE) != 0) 00044 instructionBitMask |= MMX; 00045 if(plat64bit || IsProcessorFeaturePresent(PF_XMMI_INSTRUCTIONS_AVAILABLE) != 0) 00046 instructionBitMask |= SSE; 00047 if(plat64bit || IsProcessorFeaturePresent(PF_XMMI64_INSTRUCTIONS_AVAILABLE) != 0) 00048 instructionBitMask |= SSE2; 00049 if(IsProcessorFeaturePresent(PF_SSE3_INSTRUCTIONS_AVAILABLE) != 0) 00050 instructionBitMask |= SSE3; 00051 00052 return instructionBitMask; 00053 } 00054 }; 00055 } 00056 00057 #endif // __PROCESSORSPECDETECTION_WIN_H__
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