ref: e459b91412d202fbc277db47037e8afd9a461731
dir: /codec/common/cpu.h/
/*! * \copy * Copyright (c) 2009-2013, Cisco Systems * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * * * \file cpu.h * * \brief CPU feature compatibility detection * * \date 04/29/2009 Created * ************************************************************************************* */ #if !defined(WELS_CPU_DETECTION_H__) #define WELS_CPU_DETECTION_H__ #include "typedefs.h" #include "cpu_core.h" #if defined(__cplusplus) extern "C" { #endif//__cplusplus #if defined(X86_ASM) /* * cpuid support verify routine * return 0 if cpuid is not supported by cpu */ int32_t WelsCPUIdVerify(); void_t WelsCPUId (uint32_t uiIndex, uint32_t* pFeatureA, uint32_t* pFeatureB, uint32_t* pFeatureC, uint32_t* pFeatureD); int32_t WelsCPUSupportAVX (uint32_t eax, uint32_t ecx); int32_t WelsCPUSupportFMA (uint32_t eax, uint32_t ecx); void_t WelsEmms(); uint32_t WelsCPUFeatureDetect (int32_t* pNumberOfLogicProcessors); /* * clear FPU registers states for potential float based calculation if support */ void WelsCPURestore (const uint32_t kuiCPU); #ifdef WIN64 void WelsXmmRegStore(void * src); void WelsXmmRegLoad(void * src); #endif #endif void WelsXmmRegEmptyOp(void * pSrc); #if defined(__cplusplus) } #endif//__cplusplus typedef void (*WelsXmmRegProtectFunc)(void * pSrc); #ifdef WIN64 #define XMMREG_PROTECT_DECLARE(name) \ WelsXmmRegProtectFunc name##load;\ WelsXmmRegProtectFunc name##store;\ uint8_t name##Buffer[160]; #define XMMREG_PROTECT_INIT(name) \ { \ uint32_t uiCpuFlag = WelsCPUFeatureDetect(NULL);\ if( uiCpuFlag & WELS_CPU_SSE2 ){\ name##load = WelsXmmRegLoad;\ name##store = WelsXmmRegStore; \ } else { \ name##load = WelsXmmRegEmptyOp; \ name##store = WelsXmmRegEmptyOp; \ } \ } #define XMMREG_PROTECT_UNINIT(name) \ #define XMMREG_PROTECT_STORE(name) \ name##store(name##Buffer); #define XMMREG_PROTECT_LOAD(name) \ name##load(name##Buffer); #else #define XMMREG_PROTECT_DECLARE(name) #define XMMREG_PROTECT_INIT(name) #define XMMREG_PROTECT_UNINIT(name) #define XMMREG_PROTECT_STORE(name) #define XMMREG_PROTECT_LOAD(name) #endif #endif//WELS_CPU_DETECTION_H__