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| 1 | pmbaty | 1 | /* |
| 2 | Simple DirectMedia Layer |
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| 3 | Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org> |
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| 4 | |||
| 5 | This software is provided 'as-is', without any express or implied |
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| 6 | warranty. In no event will the authors be held liable for any damages |
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| 7 | arising from the use of this software. |
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| 8 | |||
| 9 | Permission is granted to anyone to use this software for any purpose, |
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| 10 | including commercial applications, and to alter it and redistribute it |
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| 11 | freely, subject to the following restrictions: |
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| 12 | |||
| 13 | 1. The origin of this software must not be misrepresented; you must not |
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| 14 | claim that you wrote the original software. If you use this software |
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| 15 | in a product, an acknowledgment in the product documentation would be |
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| 16 | appreciated but is not required. |
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| 17 | 2. Altered source versions must be plainly marked as such, and must not be |
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| 18 | misrepresented as being the original software. |
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| 19 | 3. This notice may not be removed or altered from any source distribution. |
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| 20 | */ |
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| 21 | |||
| 22 | /** |
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| 23 | * \file SDL_cpuinfo.h |
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| 24 | * |
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| 25 | * CPU feature detection for SDL. |
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| 26 | */ |
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| 27 | |||
| 28 | #ifndef SDL_cpuinfo_h_ |
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| 29 | #define SDL_cpuinfo_h_ |
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| 30 | |||
| 31 | #include "SDL_stdinc.h" |
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| 32 | |||
| 33 | /* Need to do this here because intrin.h has C++ code in it */ |
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| 34 | /* Visual Studio 2005 has a bug where intrin.h conflicts with winnt.h */ |
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| 35 | #if defined(_MSC_VER) && (_MSC_VER >= 1500) && (defined(_M_IX86) || defined(_M_X64)) |
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| 36 | #ifdef __clang__ |
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| 37 | /* Many of the intrinsics SDL uses are not implemented by clang with Visual Studio */ |
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| 38 | #undef __MMX__ |
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| 39 | #undef __SSE__ |
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| 40 | #undef __SSE2__ |
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| 41 | #else |
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| 42 | #include <intrin.h> |
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| 43 | #ifndef _WIN64 |
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| 44 | #define __MMX__ |
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| 45 | #define __3dNOW__ |
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| 46 | #endif |
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| 47 | #define __SSE__ |
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| 48 | #define __SSE2__ |
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| 49 | #endif /* __clang__ */ |
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| 50 | #elif defined(__MINGW64_VERSION_MAJOR) |
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| 51 | #include <intrin.h> |
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| 52 | #else |
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| 53 | #ifdef __ALTIVEC__ |
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| 54 | #if HAVE_ALTIVEC_H && !defined(__APPLE_ALTIVEC__) |
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| 55 | #include <altivec.h> |
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| 56 | #undef pixel |
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| 57 | #endif |
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| 58 | #endif |
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| 59 | #ifdef __MMX__ |
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| 60 | #include <mmintrin.h> |
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| 61 | #endif |
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| 62 | #ifdef __3dNOW__ |
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| 63 | #include <mm3dnow.h> |
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| 64 | #endif |
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| 65 | #ifdef __SSE__ |
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| 66 | #include <xmmintrin.h> |
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| 67 | #endif |
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| 68 | #ifdef __SSE2__ |
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| 69 | #include <emmintrin.h> |
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| 70 | #endif |
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| 71 | #ifdef __SSE3__ |
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| 72 | #include <pmmintrin.h> |
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| 73 | #endif |
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| 74 | #endif |
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| 75 | |||
| 76 | #include "begin_code.h" |
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| 77 | /* Set up for C function definitions, even when using C++ */ |
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| 78 | #ifdef __cplusplus |
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| 79 | extern "C" { |
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| 80 | #endif |
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| 81 | |||
| 82 | /* This is a guess for the cacheline size used for padding. |
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| 83 | * Most x86 processors have a 64 byte cache line. |
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| 84 | * The 64-bit PowerPC processors have a 128 byte cache line. |
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| 85 | * We'll use the larger value to be generally safe. |
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| 86 | */ |
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| 87 | #define SDL_CACHELINE_SIZE 128 |
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| 88 | |||
| 89 | /** |
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| 90 | * This function returns the number of CPU cores available. |
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| 91 | */ |
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| 92 | extern DECLSPEC int SDLCALL SDL_GetCPUCount(void); |
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| 93 | |||
| 94 | /** |
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| 95 | * This function returns the L1 cache line size of the CPU |
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| 96 | * |
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| 97 | * This is useful for determining multi-threaded structure padding |
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| 98 | * or SIMD prefetch sizes. |
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| 99 | */ |
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| 100 | extern DECLSPEC int SDLCALL SDL_GetCPUCacheLineSize(void); |
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| 101 | |||
| 102 | /** |
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| 103 | * This function returns true if the CPU has the RDTSC instruction. |
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| 104 | */ |
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| 105 | extern DECLSPEC SDL_bool SDLCALL SDL_HasRDTSC(void); |
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| 106 | |||
| 107 | /** |
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| 108 | * This function returns true if the CPU has AltiVec features. |
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| 109 | */ |
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| 110 | extern DECLSPEC SDL_bool SDLCALL SDL_HasAltiVec(void); |
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| 111 | |||
| 112 | /** |
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| 113 | * This function returns true if the CPU has MMX features. |
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| 114 | */ |
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| 115 | extern DECLSPEC SDL_bool SDLCALL SDL_HasMMX(void); |
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| 116 | |||
| 117 | /** |
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| 118 | * This function returns true if the CPU has 3DNow! features. |
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| 119 | */ |
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| 120 | extern DECLSPEC SDL_bool SDLCALL SDL_Has3DNow(void); |
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| 121 | |||
| 122 | /** |
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| 123 | * This function returns true if the CPU has SSE features. |
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| 124 | */ |
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| 125 | extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE(void); |
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| 126 | |||
| 127 | /** |
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| 128 | * This function returns true if the CPU has SSE2 features. |
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| 129 | */ |
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| 130 | extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE2(void); |
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| 131 | |||
| 132 | /** |
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| 133 | * This function returns true if the CPU has SSE3 features. |
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| 134 | */ |
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| 135 | extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE3(void); |
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| 136 | |||
| 137 | /** |
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| 138 | * This function returns true if the CPU has SSE4.1 features. |
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| 139 | */ |
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| 140 | extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE41(void); |
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| 141 | |||
| 142 | /** |
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| 143 | * This function returns true if the CPU has SSE4.2 features. |
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| 144 | */ |
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| 145 | extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE42(void); |
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| 146 | |||
| 147 | /** |
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| 148 | * This function returns true if the CPU has AVX features. |
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| 149 | */ |
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| 150 | extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX(void); |
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| 151 | |||
| 152 | /** |
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| 153 | * This function returns true if the CPU has AVX2 features. |
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| 154 | */ |
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| 155 | extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX2(void); |
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| 156 | |||
| 157 | /** |
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| 158 | * This function returns true if the CPU has NEON (ARM SIMD) features. |
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| 159 | */ |
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| 160 | extern DECLSPEC SDL_bool SDLCALL SDL_HasNEON(void); |
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| 161 | |||
| 162 | /** |
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| 163 | * This function returns the amount of RAM configured in the system, in MB. |
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| 164 | */ |
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| 165 | extern DECLSPEC int SDLCALL SDL_GetSystemRAM(void); |
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| 166 | |||
| 167 | |||
| 168 | /* Ends C function definitions when using C++ */ |
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| 169 | #ifdef __cplusplus |
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| 170 | } |
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| 171 | #endif |
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| 172 | #include "close_code.h" |
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| 173 | |||
| 174 | #endif /* SDL_cpuinfo_h_ */ |
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| 175 | |||
| 176 | /* vi: set ts=4 sw=4 expandtab: */ |