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161 lines
4.1 KiB
161 lines
4.1 KiB
/* |
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Simple DirectMedia Layer |
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Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org> |
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This software is provided 'as-is', without any express or implied |
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warranty. In no event will the authors be held liable for any damages |
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arising from the use of this software. |
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Permission is granted to anyone to use this software for any purpose, |
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including commercial applications, and to alter it and redistribute it |
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freely, subject to the following restrictions: |
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1. The origin of this software must not be misrepresented; you must not |
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claim that you wrote the original software. If you use this software |
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in a product, an acknowledgment in the product documentation would be |
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appreciated but is not required. |
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2. Altered source versions must be plainly marked as such, and must not be |
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misrepresented as being the original software. |
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3. This notice may not be removed or altered from any source distribution. |
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*/ |
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/** |
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* \file SDL_cpuinfo.h |
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* |
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* CPU feature detection for SDL. |
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*/ |
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#ifndef _SDL_cpuinfo_h |
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#define _SDL_cpuinfo_h |
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#include "SDL_stdinc.h" |
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/* Need to do this here because intrin.h has C++ code in it */ |
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/* Visual Studio 2005 has a bug where intrin.h conflicts with winnt.h */ |
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#if defined(_MSC_VER) && (_MSC_VER >= 1500) && (defined(_M_IX86) || defined(_M_X64)) |
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#include <intrin.h> |
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#ifndef _WIN64 |
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#define __MMX__ |
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#define __3dNOW__ |
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#endif |
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#define __SSE__ |
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#define __SSE2__ |
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#elif defined(__MINGW64_VERSION_MAJOR) |
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#include <intrin.h> |
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#else |
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#ifdef __ALTIVEC__ |
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#if HAVE_ALTIVEC_H && !defined(__APPLE_ALTIVEC__) |
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#include <altivec.h> |
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#undef pixel |
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#endif |
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#endif |
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#ifdef __MMX__ |
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#include <mmintrin.h> |
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#endif |
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#ifdef __3dNOW__ |
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#include <mm3dnow.h> |
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#endif |
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#ifdef __SSE__ |
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#include <xmmintrin.h> |
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#endif |
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#ifdef __SSE2__ |
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#include <emmintrin.h> |
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#endif |
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#endif |
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#include "begin_code.h" |
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/* Set up for C function definitions, even when using C++ */ |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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/* This is a guess for the cacheline size used for padding. |
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* Most x86 processors have a 64 byte cache line. |
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* The 64-bit PowerPC processors have a 128 byte cache line. |
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* We'll use the larger value to be generally safe. |
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*/ |
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#define SDL_CACHELINE_SIZE 128 |
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/** |
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* This function returns the number of CPU cores available. |
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*/ |
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extern DECLSPEC int SDLCALL SDL_GetCPUCount(void); |
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/** |
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* This function returns the L1 cache line size of the CPU |
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* |
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* This is useful for determining multi-threaded structure padding |
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* or SIMD prefetch sizes. |
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*/ |
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extern DECLSPEC int SDLCALL SDL_GetCPUCacheLineSize(void); |
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/** |
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* This function returns true if the CPU has the RDTSC instruction. |
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*/ |
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extern DECLSPEC SDL_bool SDLCALL SDL_HasRDTSC(void); |
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/** |
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* This function returns true if the CPU has AltiVec features. |
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*/ |
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extern DECLSPEC SDL_bool SDLCALL SDL_HasAltiVec(void); |
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/** |
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* This function returns true if the CPU has MMX features. |
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*/ |
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extern DECLSPEC SDL_bool SDLCALL SDL_HasMMX(void); |
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/** |
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* This function returns true if the CPU has 3DNow! features. |
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*/ |
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extern DECLSPEC SDL_bool SDLCALL SDL_Has3DNow(void); |
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/** |
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* This function returns true if the CPU has SSE features. |
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*/ |
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extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE(void); |
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/** |
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* This function returns true if the CPU has SSE2 features. |
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*/ |
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extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE2(void); |
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/** |
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* This function returns true if the CPU has SSE3 features. |
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*/ |
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extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE3(void); |
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/** |
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* This function returns true if the CPU has SSE4.1 features. |
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*/ |
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extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE41(void); |
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/** |
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* This function returns true if the CPU has SSE4.2 features. |
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*/ |
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extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE42(void); |
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/** |
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* This function returns true if the CPU has AVX features. |
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*/ |
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extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX(void); |
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/** |
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* This function returns true if the CPU has AVX2 features. |
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*/ |
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extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX2(void); |
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/** |
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* This function returns the amount of RAM configured in the system, in MB. |
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*/ |
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extern DECLSPEC int SDLCALL SDL_GetSystemRAM(void); |
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/* Ends C function definitions when using C++ */ |
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#ifdef __cplusplus |
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} |
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#endif |
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#include "close_code.h" |
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#endif /* _SDL_cpuinfo_h */ |
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/* vi: set ts=4 sw=4 expandtab: */
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