include/SDL_cpuinfo.h
author Ozkan Sezer <sezeroz@gmail.com>
Thu, 16 Aug 2018 11:01:02 +0300
changeset 12120 0131b11bd03f
parent 11992 08c415f14810
permissions -rw-r--r--
SDL_hidapi_ps4.c: define NTDDI_VISTA / _WIN32_WINNT_VISTA if not defined

it still needs a Vista or newer Platform SDK to build, though.
     1 /*
     2   Simple DirectMedia Layer
     3   Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
     4 
     5   This software is provided 'as-is', without any express or implied
     6   warranty.  In no event will the authors be held liable for any damages
     7   arising from the use of this software.
     8 
     9   Permission is granted to anyone to use this software for any purpose,
    10   including commercial applications, and to alter it and redistribute it
    11   freely, subject to the following restrictions:
    12 
    13   1. The origin of this software must not be misrepresented; you must not
    14      claim that you wrote the original software. If you use this software
    15      in a product, an acknowledgment in the product documentation would be
    16      appreciated but is not required.
    17   2. Altered source versions must be plainly marked as such, and must not be
    18      misrepresented as being the original software.
    19   3. This notice may not be removed or altered from any source distribution.
    20 */
    21 
    22 /**
    23  *  \file SDL_cpuinfo.h
    24  *
    25  *  CPU feature detection for SDL.
    26  */
    27 
    28 #ifndef SDL_cpuinfo_h_
    29 #define SDL_cpuinfo_h_
    30 
    31 #include "SDL_stdinc.h"
    32 
    33 /* Need to do this here because intrin.h has C++ code in it */
    34 /* Visual Studio 2005 has a bug where intrin.h conflicts with winnt.h */
    35 #if defined(_MSC_VER) && (_MSC_VER >= 1500) && (defined(_M_IX86) || defined(_M_X64))
    36 #ifdef __clang__
    37 /* Many of the intrinsics SDL uses are not implemented by clang with Visual Studio */
    38 #undef __MMX__
    39 #undef __SSE__
    40 #undef __SSE2__
    41 #else
    42 #include <intrin.h>
    43 #ifndef _WIN64
    44 #define __MMX__
    45 #define __3dNOW__
    46 #endif
    47 #define __SSE__
    48 #define __SSE2__
    49 #endif /* __clang__ */
    50 #elif defined(__MINGW64_VERSION_MAJOR)
    51 #include <intrin.h>
    52 #else
    53 #ifdef __ALTIVEC__
    54 #if defined(HAVE_ALTIVEC_H) && !defined(__APPLE_ALTIVEC__) && !defined(SDL_DISABLE_ALTIVEC_H)
    55 #include <altivec.h>
    56 #undef pixel
    57 #undef bool
    58 #endif
    59 #endif
    60 #if defined(__ARM_NEON__) && !defined(SDL_DISABLE_ARM_NEON_H)
    61 #include <arm_neon.h>
    62 #endif
    63 #if defined(__3dNOW__) && !defined(SDL_DISABLE_MM3DNOW_H)
    64 #include <mm3dnow.h>
    65 #endif
    66 #if defined(HAVE_IMMINTRIN_H) && !defined(SDL_DISABLE_IMMINTRIN_H)
    67 #include <immintrin.h>
    68 #else
    69 #if defined(__MMX__) && !defined(SDL_DISABLE_MMINTRIN_H)
    70 #include <mmintrin.h>
    71 #endif
    72 #if defined(__SSE__) && !defined(SDL_DISABLE_XMMINTRIN_H)
    73 #include <xmmintrin.h>
    74 #endif
    75 #if defined(__SSE2__) && !defined(SDL_DISABLE_EMMINTRIN_H)
    76 #include <emmintrin.h>
    77 #endif
    78 #if defined(__SSE3__) && !defined(SDL_DISABLE_PMMINTRIN_H)
    79 #include <pmmintrin.h>
    80 #endif
    81 #endif /* HAVE_IMMINTRIN_H */
    82 #endif /* compiler version */
    83 
    84 #include "begin_code.h"
    85 /* Set up for C function definitions, even when using C++ */
    86 #ifdef __cplusplus
    87 extern "C" {
    88 #endif
    89 
    90 /* This is a guess for the cacheline size used for padding.
    91  * Most x86 processors have a 64 byte cache line.
    92  * The 64-bit PowerPC processors have a 128 byte cache line.
    93  * We'll use the larger value to be generally safe.
    94  */
    95 #define SDL_CACHELINE_SIZE  128
    96 
    97 /**
    98  *  This function returns the number of CPU cores available.
    99  */
   100 extern DECLSPEC int SDLCALL SDL_GetCPUCount(void);
   101 
   102 /**
   103  *  This function returns the L1 cache line size of the CPU
   104  *
   105  *  This is useful for determining multi-threaded structure padding
   106  *  or SIMD prefetch sizes.
   107  */
   108 extern DECLSPEC int SDLCALL SDL_GetCPUCacheLineSize(void);
   109 
   110 /**
   111  *  This function returns true if the CPU has the RDTSC instruction.
   112  */
   113 extern DECLSPEC SDL_bool SDLCALL SDL_HasRDTSC(void);
   114 
   115 /**
   116  *  This function returns true if the CPU has AltiVec features.
   117  */
   118 extern DECLSPEC SDL_bool SDLCALL SDL_HasAltiVec(void);
   119 
   120 /**
   121  *  This function returns true if the CPU has MMX features.
   122  */
   123 extern DECLSPEC SDL_bool SDLCALL SDL_HasMMX(void);
   124 
   125 /**
   126  *  This function returns true if the CPU has 3DNow! features.
   127  */
   128 extern DECLSPEC SDL_bool SDLCALL SDL_Has3DNow(void);
   129 
   130 /**
   131  *  This function returns true if the CPU has SSE features.
   132  */
   133 extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE(void);
   134 
   135 /**
   136  *  This function returns true if the CPU has SSE2 features.
   137  */
   138 extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE2(void);
   139 
   140 /**
   141  *  This function returns true if the CPU has SSE3 features.
   142  */
   143 extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE3(void);
   144 
   145 /**
   146  *  This function returns true if the CPU has SSE4.1 features.
   147  */
   148 extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE41(void);
   149 
   150 /**
   151  *  This function returns true if the CPU has SSE4.2 features.
   152  */
   153 extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE42(void);
   154 
   155 /**
   156  *  This function returns true if the CPU has AVX features.
   157  */
   158 extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX(void);
   159 
   160 /**
   161  *  This function returns true if the CPU has AVX2 features.
   162  */
   163 extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX2(void);
   164 
   165 /**
   166  *  This function returns true if the CPU has AVX-512F (foundation) features.
   167  */
   168 extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX512F(void);
   169 
   170 /**
   171  *  This function returns true if the CPU has NEON (ARM SIMD) features.
   172  */
   173 extern DECLSPEC SDL_bool SDLCALL SDL_HasNEON(void);
   174 
   175 /**
   176  *  This function returns the amount of RAM configured in the system, in MB.
   177  */
   178 extern DECLSPEC int SDLCALL SDL_GetSystemRAM(void);
   179 
   180 /* Ends C function definitions when using C++ */
   181 #ifdef __cplusplus
   182 }
   183 #endif
   184 #include "close_code.h"
   185 
   186 #endif /* SDL_cpuinfo_h_ */
   187 
   188 /* vi: set ts=4 sw=4 expandtab: */