include/SDL_cpuinfo.h
author Ryan C. Gordon <icculus@icculus.org>
Sat, 15 Sep 2012 10:59:39 -0400
changeset 6430 48d519500f7e
parent 6138 4c64952a58fb
child 6885 700f1b25f77f
child 8320 e9db1532c340
permissions -rw-r--r--
Removed Windows CE support from SDL 2.0.

It's a long-dead platform, and we don't have any way to build for, test, or
maintain it, so there's no sense in doing acrobatics to support it.

If you need Windows CE support, use SDL 1.2. If you need Windows Phone support,
send SDL 2.0 patches for the newer Windows Mobile platform.
     1 /*
     2   Simple DirectMedia Layer
     3   Copyright (C) 1997-2012 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)
    36 #include <intrin.h>
    37 #ifndef _WIN64
    38 #define __MMX__
    39 #define __3dNOW__
    40 #endif
    41 #define __SSE__
    42 #define __SSE2__
    43 #elif defined(__MINGW64_VERSION_MAJOR)
    44 #include <intrin.h>
    45 #else
    46 #ifdef __ALTIVEC__
    47 #if HAVE_ALTIVEC_H && !defined(__APPLE_ALTIVEC__)
    48 #include <altivec.h>
    49 #undef pixel
    50 #endif
    51 #endif
    52 #ifdef __MMX__
    53 #include <mmintrin.h>
    54 #endif
    55 #ifdef __3dNOW__
    56 #include <mm3dnow.h>
    57 #endif
    58 #ifdef __SSE__
    59 #include <xmmintrin.h>
    60 #endif
    61 #ifdef __SSE2__
    62 #include <emmintrin.h>
    63 #endif
    64 #endif
    65 
    66 #include "begin_code.h"
    67 /* Set up for C function definitions, even when using C++ */
    68 #ifdef __cplusplus
    69 /* *INDENT-OFF* */
    70 extern "C" {
    71 /* *INDENT-ON* */
    72 #endif
    73 
    74 /* This is a guess for the cacheline size used for padding.
    75  * Most x86 processors have a 64 byte cache line.
    76  * The 64-bit PowerPC processors have a 128 byte cache line.
    77  * We'll use the larger value to be generally safe.
    78  */
    79 #define SDL_CACHELINE_SIZE  128
    80 
    81 /**
    82  *  This function returns the number of CPU cores available.
    83  */
    84 extern DECLSPEC int SDLCALL SDL_GetCPUCount(void);
    85 
    86 /**
    87  *  This function returns the L1 cache line size of the CPU
    88  *
    89  *  This is useful for determining multi-threaded structure padding
    90  *  or SIMD prefetch sizes.
    91  */
    92 extern DECLSPEC int SDLCALL SDL_GetCPUCacheLineSize(void);
    93 
    94 /**
    95  *  This function returns true if the CPU has the RDTSC instruction.
    96  */
    97 extern DECLSPEC SDL_bool SDLCALL SDL_HasRDTSC(void);
    98 
    99 /**
   100  *  This function returns true if the CPU has AltiVec features.
   101  */
   102 extern DECLSPEC SDL_bool SDLCALL SDL_HasAltiVec(void);
   103 
   104 /**
   105  *  This function returns true if the CPU has MMX features.
   106  */
   107 extern DECLSPEC SDL_bool SDLCALL SDL_HasMMX(void);
   108 
   109 /**
   110  *  This function returns true if the CPU has 3DNow! features.
   111  */
   112 extern DECLSPEC SDL_bool SDLCALL SDL_Has3DNow(void);
   113 
   114 /**
   115  *  This function returns true if the CPU has SSE features.
   116  */
   117 extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE(void);
   118 
   119 /**
   120  *  This function returns true if the CPU has SSE2 features.
   121  */
   122 extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE2(void);
   123 
   124 /**
   125  *  This function returns true if the CPU has SSE3 features.
   126  */
   127 extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE3(void);
   128 
   129 /**
   130  *  This function returns true if the CPU has SSE4.1 features.
   131  */
   132 extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE41(void);
   133 
   134 /**
   135  *  This function returns true if the CPU has SSE4.2 features.
   136  */
   137 extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE42(void);
   138 
   139 
   140 /* Ends C function definitions when using C++ */
   141 #ifdef __cplusplus
   142 /* *INDENT-OFF* */
   143 }
   144 /* *INDENT-ON* */
   145 #endif
   146 #include "close_code.h"
   147 
   148 #endif /* _SDL_cpuinfo_h */
   149 
   150 /* vi: set ts=4 sw=4 expandtab: */