Atlas - SDL_cpuinfo.h
Home / ext / SDL2 / include
Lines: 1 | Size: 5187 bytes
[Download] [Show on GitHub] [Search similar files] [Raw] [Raw (proxy)] 
[FILE BEGIN]
1/*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2018 Sam Lantinga <[email protected]>
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
87extern "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 */
100extern 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 */
108extern DECLSPEC int SDLCALL SDL_GetCPUCacheLineSize(void);
109
110/**
111 *  This function returns true if the CPU has the RDTSC instruction.
112 */
113extern DECLSPEC SDL_bool SDLCALL SDL_HasRDTSC(void);
114
115/**
116 *  This function returns true if the CPU has AltiVec features.
117 */
118extern DECLSPEC SDL_bool SDLCALL SDL_HasAltiVec(void);
119
120/**
121 *  This function returns true if the CPU has MMX features.
122 */
123extern DECLSPEC SDL_bool SDLCALL SDL_HasMMX(void);
124
125/**
126 *  This function returns true if the CPU has 3DNow! features.
127 */
128extern DECLSPEC SDL_bool SDLCALL SDL_Has3DNow(void);
129
130/**
131 *  This function returns true if the CPU has SSE features.
132 */
133extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE(void);
134
135/**
136 *  This function returns true if the CPU has SSE2 features.
137 */
138extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE2(void);
139
140/**
141 *  This function returns true if the CPU has SSE3 features.
142 */
143extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE3(void);
144
145/**
146 *  This function returns true if the CPU has SSE4.1 features.
147 */
148extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE41(void);
149
150/**
151 *  This function returns true if the CPU has SSE4.2 features.
152 */
153extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE42(void);
154
155/**
156 *  This function returns true if the CPU has AVX features.
157 */
158extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX(void);
159
160/**
161 *  This function returns true if the CPU has AVX2 features.
162 */
163extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX2(void);
164
165/**
166 *  This function returns true if the CPU has AVX-512F (foundation) features.
167 */
168extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX512F(void);
169
170/**
171 *  This function returns true if the CPU has NEON (ARM SIMD) features.
172 */
173extern DECLSPEC SDL_bool SDLCALL SDL_HasNEON(void);
174
175/**
176 *  This function returns the amount of RAM configured in the system, in MB.
177 */
178extern 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: */
189
[FILE END]
(C) 2025 0x4248
(C) 2025 4248 Media and 4248 Systems, All part of 0x4248
See LICENCE files for more information. Not all files are by 0x4248 always check Licencing.