Subversion Repositories Games.Prince of Persia

Rev

Go to most recent revision | Blame | Compare with Previous | Last modification | View Log | Download | RSS feed

  1. /*
  2.   Simple DirectMedia Layer
  3.   Copyright (C) 1997-2017 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 HAVE_ALTIVEC_H && !defined(__APPLE_ALTIVEC__)
  55. #include <altivec.h>
  56. #undef pixel
  57. #endif
  58. #endif
  59. #ifdef __MMX__
  60. #include <mmintrin.h>
  61. #endif
  62. #ifdef __3dNOW__
  63. #include <mm3dnow.h>
  64. #endif
  65. #ifdef __SSE__
  66. #include <xmmintrin.h>
  67. #endif
  68. #ifdef __SSE2__
  69. #include <emmintrin.h>
  70. #endif
  71. #ifdef __SSE3__
  72. #include <pmmintrin.h>
  73. #endif
  74. #endif
  75.  
  76. #include "begin_code.h"
  77. /* Set up for C function definitions, even when using C++ */
  78. #ifdef __cplusplus
  79. extern "C" {
  80. #endif
  81.  
  82. /* This is a guess for the cacheline size used for padding.
  83.  * Most x86 processors have a 64 byte cache line.
  84.  * The 64-bit PowerPC processors have a 128 byte cache line.
  85.  * We'll use the larger value to be generally safe.
  86.  */
  87. #define SDL_CACHELINE_SIZE  128
  88.  
  89. /**
  90.  *  This function returns the number of CPU cores available.
  91.  */
  92. extern DECLSPEC int SDLCALL SDL_GetCPUCount(void);
  93.  
  94. /**
  95.  *  This function returns the L1 cache line size of the CPU
  96.  *
  97.  *  This is useful for determining multi-threaded structure padding
  98.  *  or SIMD prefetch sizes.
  99.  */
  100. extern DECLSPEC int SDLCALL SDL_GetCPUCacheLineSize(void);
  101.  
  102. /**
  103.  *  This function returns true if the CPU has the RDTSC instruction.
  104.  */
  105. extern DECLSPEC SDL_bool SDLCALL SDL_HasRDTSC(void);
  106.  
  107. /**
  108.  *  This function returns true if the CPU has AltiVec features.
  109.  */
  110. extern DECLSPEC SDL_bool SDLCALL SDL_HasAltiVec(void);
  111.  
  112. /**
  113.  *  This function returns true if the CPU has MMX features.
  114.  */
  115. extern DECLSPEC SDL_bool SDLCALL SDL_HasMMX(void);
  116.  
  117. /**
  118.  *  This function returns true if the CPU has 3DNow! features.
  119.  */
  120. extern DECLSPEC SDL_bool SDLCALL SDL_Has3DNow(void);
  121.  
  122. /**
  123.  *  This function returns true if the CPU has SSE features.
  124.  */
  125. extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE(void);
  126.  
  127. /**
  128.  *  This function returns true if the CPU has SSE2 features.
  129.  */
  130. extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE2(void);
  131.  
  132. /**
  133.  *  This function returns true if the CPU has SSE3 features.
  134.  */
  135. extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE3(void);
  136.  
  137. /**
  138.  *  This function returns true if the CPU has SSE4.1 features.
  139.  */
  140. extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE41(void);
  141.  
  142. /**
  143.  *  This function returns true if the CPU has SSE4.2 features.
  144.  */
  145. extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE42(void);
  146.  
  147. /**
  148.  *  This function returns true if the CPU has AVX features.
  149.  */
  150. extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX(void);
  151.  
  152. /**
  153.  *  This function returns true if the CPU has AVX2 features.
  154.  */
  155. extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX2(void);
  156.  
  157. /**
  158.  *  This function returns true if the CPU has NEON (ARM SIMD) features.
  159.  */
  160. extern DECLSPEC SDL_bool SDLCALL SDL_HasNEON(void);
  161.  
  162. /**
  163.  *  This function returns the amount of RAM configured in the system, in MB.
  164.  */
  165. extern DECLSPEC int SDLCALL SDL_GetSystemRAM(void);
  166.  
  167.  
  168. /* Ends C function definitions when using C++ */
  169. #ifdef __cplusplus
  170. }
  171. #endif
  172. #include "close_code.h"
  173.  
  174. #endif /* SDL_cpuinfo_h_ */
  175.  
  176. /* vi: set ts=4 sw=4 expandtab: */
  177.