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