SDL_cpuinfo.h

См. документацию.

/*
  Simple DirectMedia Layer
  Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
 
  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.
*/
 
#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))
#ifdef __clang__
/* Many of the intrinsics SDL uses are not implemented by clang with Visual Studio */
#undef __MMX__
#undef __SSE__
#undef __SSE2__
#else
#include <intrin.h>
#ifndef _WIN64
#ifndef __MMX__
#define __MMX__
#endif
#ifndef __3dNOW__
#define __3dNOW__
#endif
#endif
#ifndef __SSE__
#define __SSE__
#endif
#ifndef __SSE2__
#define __SSE2__
#endif
#endif /* __clang__ */
#elif defined(__MINGW64_VERSION_MAJOR)
#include <intrin.h>
#else
/* altivec.h redefining bool causes a number of problems, see bugs 3993 and 4392, so you need to explicitly define SDL_ENABLE_ALTIVEC_H to have it included. */
#if defined(HAVE_ALTIVEC_H) && defined(__ALTIVEC__) && !defined(__APPLE_ALTIVEC__) && defined(SDL_ENABLE_ALTIVEC_H)
#include <altivec.h>
#endif
#if !defined(SDL_DISABLE_ARM_NEON_H)
#  if defined(__ARM_NEON)
#    include <arm_neon.h>
#  elif defined(__WINDOWS__) || defined(__WINRT__)
/* Visual Studio doesn't define __ARM_ARCH, but _M_ARM (if set, always 7), and _M_ARM64 (if set, always 1). */
#    if defined(_M_ARM)
#      include <armintr.h>
#      include <arm_neon.h>
#      define __ARM_NEON 1 /* Set __ARM_NEON so that it can be used elsewhere, at compile time */
#    endif
#    if defined (_M_ARM64)
#      include <arm64intr.h>
#      include <arm64_neon.h>
#      define __ARM_NEON 1 /* Set __ARM_NEON so that it can be used elsewhere, at compile time */
#    endif
#  endif
#endif
#if defined(__3dNOW__) && !defined(SDL_DISABLE_MM3DNOW_H)
#include <mm3dnow.h>
#endif
#if defined(HAVE_IMMINTRIN_H) && !defined(SDL_DISABLE_IMMINTRIN_H)
#include <immintrin.h>
#else
#if defined(__MMX__) && !defined(SDL_DISABLE_MMINTRIN_H)
#include <mmintrin.h>
#endif
#if defined(__SSE__) && !defined(SDL_DISABLE_XMMINTRIN_H)
#include <xmmintrin.h>
#endif
#if defined(__SSE2__) && !defined(SDL_DISABLE_EMMINTRIN_H)
#include <emmintrin.h>
#endif
#if defined(__SSE3__) && !defined(SDL_DISABLE_PMMINTRIN_H)
#include <pmmintrin.h>
#endif
#endif /* HAVE_IMMINTRIN_H */
#endif /* compiler version */
 
#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
 
extern DECLSPEC int SDLCALL SDL_GetCPUCount(void);
 
extern DECLSPEC int SDLCALL SDL_GetCPUCacheLineSize(void);
 
extern DECLSPEC SDL_bool SDLCALL SDL_HasRDTSC(void);
 
extern DECLSPEC SDL_bool SDLCALL SDL_HasAltiVec(void);
 
extern DECLSPEC SDL_bool SDLCALL SDL_HasMMX(void);
 
extern DECLSPEC SDL_bool SDLCALL SDL_Has3DNow(void);
 
extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE(void);
 
extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE2(void);
 
extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE3(void);
 
extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE41(void);
 
extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE42(void);
 
extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX(void);
 
extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX2(void);
 
extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX512F(void);
 
extern DECLSPEC SDL_bool SDLCALL SDL_HasARMSIMD(void);
 
extern DECLSPEC SDL_bool SDLCALL SDL_HasNEON(void);
 
extern DECLSPEC int SDLCALL SDL_GetSystemRAM(void);
 
extern DECLSPEC size_t SDLCALL SDL_SIMDGetAlignment(void);
 
extern DECLSPEC void * SDLCALL SDL_SIMDAlloc(const size_t len);
 
extern DECLSPEC void SDLCALL SDL_SIMDFree(void *ptr);
 
/* vi: set ts=4 sw=4 expandtab: */
/* 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: */