ref: 17139510a354b3f5aec036b8d583d188cb04aa10
dir: /codec/common/inc/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 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 WelsEmms();
/*
* clear FPU registers states for potential float based calculation if support
*/
void WelsCPURestore (const uint32_t kuiCPU);
#else
#define WelsEmms()
#endif
uint32_t WelsCPUFeatureDetect (int32_t* pNumberOfLogicProcessors);
#if defined(__cplusplus)
}
#endif//__cplusplus
#endif//WELS_CPU_DETECTION_H__