| /* |
| Simple DirectMedia Layer |
| Copyright (C) 1997-2014 Sam Lantinga <[email protected]> |
| |
| This software is provided 'as-is', without any express or implied |
| warranty. In no event will the authors be held liable for any damages |
| arising from the use of this software. |
| |
| Permission is granted to anyone to use this software for any purpose, |
| including commercial applications, and to alter it and redistribute it |
| freely, subject to the following restrictions: |
| |
| 1. The origin of this software must not be misrepresented; you must not |
| claim that you wrote the original software. If you use this software |
| in a product, an acknowledgment in the product documentation would be |
| appreciated but is not required. |
| 2. Altered source versions must be plainly marked as such, and must not be |
| misrepresented as being the original software. |
| 3. This notice may not be removed or altered from any source distribution. |
| */ |
| |
| /** |
| * \file SDL_cpuinfo.h |
| * |
| * CPU feature detection for SDL. |
| */ |
| |
| #ifndef _SDL_cpuinfo_h |
| #define _SDL_cpuinfo_h |
| |
| #include "SDL_stdinc.h" |
| |
| /* Need to do this here because intrin.h has C++ code in it */ |
| /* Visual Studio 2005 has a bug where intrin.h conflicts with winnt.h */ |
| #if defined(_MSC_VER) && (_MSC_VER >= 1500) && (defined(_M_IX86) || defined(_M_X64)) |
| #include <intrin.h> |
| #ifndef _WIN64 |
| #define __MMX__ |
| #define __3dNOW__ |
| #endif |
| #define __SSE__ |
| #define __SSE2__ |
| #elif defined(__MINGW64_VERSION_MAJOR) |
| #include <intrin.h> |
| #else |
| #ifdef __ALTIVEC__ |
| #if HAVE_ALTIVEC_H && !defined(__APPLE_ALTIVEC__) |
| #include <altivec.h> |
| #undef pixel |
| #endif |
| #endif |
| #ifdef __MMX__ |
| #include <mmintrin.h> |
| #endif |
| #ifdef __3dNOW__ |
| #include <mm3dnow.h> |
| #endif |
| #ifdef __SSE__ |
| #include <xmmintrin.h> |
| #endif |
| #ifdef __SSE2__ |
| #include <emmintrin.h> |
| #endif |
| #endif |
| |
| #include "begin_code.h" |
| /* Set up for C function definitions, even when using C++ */ |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* This is a guess for the cacheline size used for padding. |
| * Most x86 processors have a 64 byte cache line. |
| * The 64-bit PowerPC processors have a 128 byte cache line. |
| * We'll use the larger value to be generally safe. |
| */ |
| #define SDL_CACHELINE_SIZE 128 |
| |
| /** |
| * This function returns the number of CPU cores available. |
| */ |
| extern DECLSPEC int SDLCALL SDL_GetCPUCount(void); |
| |
| /** |
| * This function returns the L1 cache line size of the CPU |
| * |
| * This is useful for determining multi-threaded structure padding |
| * or SIMD prefetch sizes. |
| */ |
| extern DECLSPEC int SDLCALL SDL_GetCPUCacheLineSize(void); |
| |
| /** |
| * This function returns true if the CPU has the RDTSC instruction. |
| */ |
| extern DECLSPEC SDL_bool SDLCALL SDL_HasRDTSC(void); |
| |
| /** |
| * This function returns true if the CPU has AltiVec features. |
| */ |
| extern DECLSPEC SDL_bool SDLCALL SDL_HasAltiVec(void); |
| |
| /** |
| * This function returns true if the CPU has MMX features. |
| */ |
| extern DECLSPEC SDL_bool SDLCALL SDL_HasMMX(void); |
| |
| /** |
| * This function returns true if the CPU has 3DNow! features. |
| */ |
| extern DECLSPEC SDL_bool SDLCALL SDL_Has3DNow(void); |
| |
| /** |
| * This function returns true if the CPU has SSE features. |
| */ |
| extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE(void); |
| |
| /** |
| * This function returns true if the CPU has SSE2 features. |
| */ |
| extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE2(void); |
| |
| /** |
| * This function returns true if the CPU has SSE3 features. |
| */ |
| extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE3(void); |
| |
| /** |
| * This function returns true if the CPU has SSE4.1 features. |
| */ |
| extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE41(void); |
| |
| /** |
| * This function returns true if the CPU has SSE4.2 features. |
| */ |
| extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE42(void); |
| |
| /** |
| * This function returns true if the CPU has AVX features. |
| */ |
| extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX(void); |
| |
| /** |
| * This function returns the amount of RAM configured in the system, in MB. |
| */ |
| extern DECLSPEC int SDLCALL SDL_GetSystemRAM(void); |
| |
| |
| /* Ends C function definitions when using C++ */ |
| #ifdef __cplusplus |
| } |
| #endif |
| #include "close_code.h" |
| |
| #endif /* _SDL_cpuinfo_h */ |
| |
| /* vi: set ts=4 sw=4 expandtab: */ |