ref: 1ff9de36ceebaf4fae51ebba0e780cb986f5fe9c
dir: /codec/common/x86/cpuid.asm/
;*! ;* \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. ;* ;* ;* cpu_mmx.asm ;* ;* Abstract ;* verify cpuid feature support and cpuid detection ;* ;* History ;* 04/29/2009 Created ;* ;*************************************************************************/ %include "asm_inc.asm" ;****************************************************************************************** ; Macros ;****************************************************************************************** ;****************************************************************************************** ; Code ;****************************************************************************************** SECTION .text ; refer to "The IA-32 Intel(R) Architecture Software Developers Manual, Volume 2A A-M" ; section CPUID - CPU Identification ;****************************************************************************************** ; int32_t WelsCPUIdVerify() ;****************************************************************************************** WELS_EXTERN WelsCPUIdVerify push r1 PUSHRFLAGS PUSHRFLAGS pop r1 mov eax, r1d xor eax, 00200000h xor eax, r1d POPRFLAGS pop r1 ret ;**************************************************************************************************** ; void WelsCPUId( int32_t uiIndex, int32_t *pFeatureA, int32_t *pFeatureB, int32_t *pFeatureC, int32_t *pFeatureD ) ;**************************************************************************************************** %ifdef WIN64 WELS_EXTERN WelsCPUId push rbx push rdx mov eax, ecx mov ecx, [r9] cpuid mov [r9], ecx mov [r8], ebx mov rcx, [rsp + 2*8 + 40] mov [rcx], edx pop rdx mov [rdx], eax pop rbx ret %elifdef UNIX64 WELS_EXTERN WelsCPUId push rbx push rcx push rdx mov eax, edi mov ecx, [rcx] cpuid mov [r8], edx pop rdx pop r8 mov [r8], ecx mov [rdx], ebx mov [rsi], eax pop rbx ret %elifdef X86_32 WELS_EXTERN WelsCPUId push ebx push edi mov eax, [esp+12] ; operating index mov edi, [esp+24] mov ecx, [edi] cpuid ; cpuid ; processing various information return mov edi, [esp+16] mov [edi], eax mov edi, [esp+20] mov [edi], ebx mov edi, [esp+24] mov [edi], ecx mov edi, [esp+28] mov [edi], edx pop edi pop ebx ret %endif ; need call after cpuid=1 and eax, ecx flag got then ;**************************************************************************************************** ; int32_t WelsCPUSupportAVX( uint32_t eax, uint32_t ecx ) ;**************************************************************************************************** WELS_EXTERN WelsCPUSupportAVX %ifdef WIN64 mov eax, ecx mov ecx, edx %elifdef UNIX64 mov eax, edi mov ecx, esi %else mov eax, [esp+4] mov ecx, [esp+8] %endif ; refer to detection of AVX addressed in INTEL AVX manual document and ecx, 018000000H cmp ecx, 018000000H ; check both OSXSAVE and AVX feature flags jne avx_not_supported ; processor supports AVX instructions and XGETBV is enabled by OS mov ecx, 0 ; specify 0 for XFEATURE_ENABLED_MASK register XGETBV ; result in EDX:EAX and eax, 06H cmp eax, 06H ; check OS has enabled both XMM and YMM state support jne avx_not_supported mov eax, 1 ret avx_not_supported: mov eax, 0 ret ; need call after cpuid=1 and eax, ecx flag got then ;**************************************************************************************************** ; int32_t WelsCPUSupportFMA( uint32_t eax, uint32_t ecx ) ;**************************************************************************************************** WELS_EXTERN WelsCPUSupportFMA %ifdef WIN64 mov eax, ecx mov ecx, edx %elifdef UNIX64 mov eax, edi mov ecx, esi %else mov eax, [esp+4] mov ecx, [esp+8] %endif ; refer to detection of FMA addressed in INTEL AVX manual document and ecx, 018001000H cmp ecx, 018001000H ; check OSXSAVE, AVX, FMA feature flags jne fma_not_supported ; processor supports AVX,FMA instructions and XGETBV is enabled by OS mov ecx, 0 ; specify 0 for XFEATURE_ENABLED_MASK register XGETBV ; result in EDX:EAX and eax, 06H cmp eax, 06H ; check OS has enabled both XMM and YMM state support jne fma_not_supported mov eax, 1 ret fma_not_supported: mov eax, 0 ret ;****************************************************************************************** ; void WelsEmms() ;****************************************************************************************** WELS_EXTERN WelsEmms emms ; empty mmx technology states ret