]>
Commit | Line | Data |
---|---|---|
7407ac7f BB |
1 | /* |
2 | Simple DirectMedia Layer | |
3 | Copyright (C) 1997-2013 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 | extern "C" { | |
70 | #endif | |
71 | ||
72 | /* This is a guess for the cacheline size used for padding. | |
73 | * Most x86 processors have a 64 byte cache line. | |
74 | * The 64-bit PowerPC processors have a 128 byte cache line. | |
75 | * We'll use the larger value to be generally safe. | |
76 | */ | |
77 | #define SDL_CACHELINE_SIZE 128 | |
78 | ||
79 | /** | |
80 | * This function returns the number of CPU cores available. | |
81 | */ | |
82 | extern DECLSPEC int SDLCALL SDL_GetCPUCount(void); | |
83 | ||
84 | /** | |
85 | * This function returns the L1 cache line size of the CPU | |
86 | * | |
87 | * This is useful for determining multi-threaded structure padding | |
88 | * or SIMD prefetch sizes. | |
89 | */ | |
90 | extern DECLSPEC int SDLCALL SDL_GetCPUCacheLineSize(void); | |
91 | ||
92 | /** | |
93 | * This function returns true if the CPU has the RDTSC instruction. | |
94 | */ | |
95 | extern DECLSPEC SDL_bool SDLCALL SDL_HasRDTSC(void); | |
96 | ||
97 | /** | |
98 | * This function returns true if the CPU has AltiVec features. | |
99 | */ | |
100 | extern DECLSPEC SDL_bool SDLCALL SDL_HasAltiVec(void); | |
101 | ||
102 | /** | |
103 | * This function returns true if the CPU has MMX features. | |
104 | */ | |
105 | extern DECLSPEC SDL_bool SDLCALL SDL_HasMMX(void); | |
106 | ||
107 | /** | |
108 | * This function returns true if the CPU has 3DNow! features. | |
109 | */ | |
110 | extern DECLSPEC SDL_bool SDLCALL SDL_Has3DNow(void); | |
111 | ||
112 | /** | |
113 | * This function returns true if the CPU has SSE features. | |
114 | */ | |
115 | extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE(void); | |
116 | ||
117 | /** | |
118 | * This function returns true if the CPU has SSE2 features. | |
119 | */ | |
120 | extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE2(void); | |
121 | ||
122 | /** | |
123 | * This function returns true if the CPU has SSE3 features. | |
124 | */ | |
125 | extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE3(void); | |
126 | ||
127 | /** | |
128 | * This function returns true if the CPU has SSE4.1 features. | |
129 | */ | |
130 | extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE41(void); | |
131 | ||
132 | /** | |
133 | * This function returns true if the CPU has SSE4.2 features. | |
134 | */ | |
135 | extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE42(void); | |
136 | ||
137 | ||
138 | /* Ends C function definitions when using C++ */ | |
139 | #ifdef __cplusplus | |
140 | } | |
141 | #endif | |
142 | #include "close_code.h" | |
143 | ||
144 | #endif /* _SDL_cpuinfo_h */ | |
145 | ||
146 | /* vi: set ts=4 sw=4 expandtab: */ |