author | Sam Lantinga <slouken@libsdl.org> |
Mon, 07 Mar 2011 22:04:10 -0800 | |
changeset 5450 | 58630b98eb63 |
parent 5407 | 40c9d744e595 |
child 5535 | 96594ac5fd1a |
permissions | -rw-r--r-- |
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/* |
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SDL - Simple DirectMedia Layer |
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Copyright (C) 1997-2011 Sam Lantinga |
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|
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This library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU Lesser General Public |
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License as published by the Free Software Foundation; either |
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version 2.1 of the License, or (at your option) any later version. |
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|
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This library is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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Lesser General Public License for more details. |
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You should have received a copy of the GNU Lesser General Public |
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License along with this library; if not, write to the Free Software |
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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Sam Lantinga |
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slouken@libsdl.org |
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*/ |
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/** |
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* \file SDL_cpuinfo.h |
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* |
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* CPU feature detection for SDL. |
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*/ |
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#ifndef _SDL_cpuinfo_h |
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#define _SDL_cpuinfo_h |
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#include "SDL_stdinc.h" |
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/* Need to do this here because intrin.h has C++ code in it */ |
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/* Visual Studio 2005 has a bug where intrin.h conflicts with winnt.h */ |
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#if defined(_MSC_VER) && (_MSC_VER >= 1500) && !defined(_WIN32_WCE) |
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#include <intrin.h> |
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#ifndef _WIN64 |
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#define __MMX__ |
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#define __3dNOW__ |
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#endif |
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#define __SSE__ |
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#define __SSE2__ |
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#elif defined(__MINGW64_VERSION_MAJOR) |
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#include <intrin.h> |
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#else |
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#ifdef __ALTIVEC__ |
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#if HAVE_ALTIVEC_H && !defined(__APPLE_ALTIVEC__) |
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#include <altivec.h> |
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#undef pixel |
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#endif |
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#endif |
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#ifdef __MMX__ |
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#include <mmintrin.h> |
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#endif |
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#ifdef __3dNOW__ |
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#include <mm3dnow.h> |
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#endif |
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#ifdef __SSE__ |
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#include <xmmintrin.h> |
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#endif |
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#ifdef __SSE2__ |
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#include <emmintrin.h> |
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#endif |
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#endif |
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#include "begin_code.h" |
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/* Set up for C function definitions, even when using C++ */ |
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#ifdef __cplusplus |
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/* *INDENT-OFF* */ |
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extern "C" { |
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/* *INDENT-ON* */ |
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#endif |
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/* This is a guess for the cacheline size used for padding. |
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* Most x86 processors have a 64 byte cache line. |
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* The 64-bit PowerPC processors have a 128 byte cache line. |
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* We'll use the larger value to be generally safe. |
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*/ |
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#define SDL_CACHELINE_SIZE 128 |
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/** |
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* This function returns the number of CPU cores available. |
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*/ |
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extern DECLSPEC int SDLCALL SDL_GetCPUCount(void); |
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/** |
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* This function returns the L1 cache line size of the CPU |
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* |
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* This is useful for determining multi-threaded structure padding |
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* or SIMD prefetch sizes. |
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*/ |
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extern DECLSPEC int SDLCALL SDL_GetCPUCacheLineSize(void); |
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/** |
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* This function returns true if the CPU has the RDTSC instruction. |
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*/ |
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extern DECLSPEC SDL_bool SDLCALL SDL_HasRDTSC(void); |
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/** |
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* This function returns true if the CPU has AltiVec features. |
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*/ |
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extern DECLSPEC SDL_bool SDLCALL SDL_HasAltiVec(void); |
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/** |
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* This function returns true if the CPU has MMX features. |
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*/ |
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extern DECLSPEC SDL_bool SDLCALL SDL_HasMMX(void); |
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/** |
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* This function returns true if the CPU has 3DNow! features. |
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*/ |
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extern DECLSPEC SDL_bool SDLCALL SDL_Has3DNow(void); |
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/** |
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* This function returns true if the CPU has SSE features. |
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*/ |
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extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE(void); |
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/** |
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* This function returns true if the CPU has SSE2 features. |
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*/ |
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extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE2(void); |
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/** |
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* This function returns true if the CPU has SSE3 features. |
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*/ |
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extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE3(void); |
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/** |
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* This function returns true if the CPU has SSE4.1 features. |
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*/ |
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extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE41(void); |
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/** |
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* This function returns true if the CPU has SSE4.2 features. |
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*/ |
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extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE42(void); |
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/* Ends C function definitions when using C++ */ |
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#ifdef __cplusplus |
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/* *INDENT-OFF* */ |
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} |
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/* *INDENT-ON* */ |
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#endif |
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#include "close_code.h" |
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#endif /* _SDL_cpuinfo_h */ |
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/* vi: set ts=4 sw=4 expandtab: */ |