/*

    SDL - Simple DirectMedia Layer

    Copyright (C) 1997-2011 Sam Lantinga

    This library is free software; you can redistribute it and/or

    modify it under the terms of the GNU Lesser General Public

    License as published by the Free Software Foundation; either

    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public

    License along with this library; if not, write to the Free Software

    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga

    slouken@libsdl.org

*/

/**

 *  \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(_WIN32_WCE)

#include <intrin.h>

#define __MMX__

#define __3dNOW__

#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

/* *INDENT-OFF* */

extern "C" {

/* *INDENT-ON* */

#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);

/* Ends C function definitions when using C++ */

#ifdef __cplusplus

/* *INDENT-OFF* */

}

/* *INDENT-ON* */

#endif

#include "close_code.h"

#endif /* _SDL_cpuinfo_h */

/* vi: set ts=4 sw=4 expandtab: */