cpu-a.asm
资源名称:X264CODEC.rar [点击查看]
上传用户:lctgjx
上传日期:2022-06-04
资源大小:8887k
文件大小:4k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- ;*****************************************************************************
- ;* cpu-a.asm: h264 encoder library
- ;*****************************************************************************
- ;* Copyright (C) 2003-2008 x264 project
- ;*
- ;* Authors: Laurent Aimar <fenrir@via.ecp.fr>
- ;* Loren Merritt <lorenm@u.washington.edu>
- ;* Jason Garrett-Glaser <darkshikari@gmail.com>
- ;*
- ;* This program is free software; you can redistribute it and/or modify
- ;* it under the terms of the GNU General Public License as published by
- ;* the Free Software Foundation; either version 2 of the License, or
- ;* (at your option) any later version.
- ;*
- ;* This program is distributed in the hope that it will be useful,
- ;* but WITHOUT ANY WARRANTY; without even the implied warranty of
- ;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- ;* GNU General Public License for more details.
- ;*
- ;* You should have received a copy of the GNU General Public License
- ;* along with this program; if not, write to the Free Software
- ;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
- ;*****************************************************************************
- %include "x86inc.asm"
- SECTION .text
- %ifdef ARCH_X86_64
- ;-----------------------------------------------------------------------------
- ; int x264_cpu_cpuid( int op, int *eax, int *ebx, int *ecx, int *edx )
- ;-----------------------------------------------------------------------------
- cglobal x264_cpu_cpuid, 5,7
- push rbx
- mov r11, r1
- mov r10, r2
- movifnidn r9, r3
- movifnidn r8, r4
- mov eax, r0d
- cpuid
- mov [r11], eax
- mov [r10], ebx
- mov [r9], ecx
- mov [r8], edx
- pop rbx
- RET
- %else
- ;-----------------------------------------------------------------------------
- ; int x264_cpu_cpuid_test( void )
- ; return 0 if unsupported
- ;-----------------------------------------------------------------------------
- cglobal x264_cpu_cpuid_test
- pushfd
- push ebx
- push ebp
- push esi
- push edi
- pushfd
- pop eax
- mov ebx, eax
- xor eax, 0x200000
- push eax
- popfd
- pushfd
- pop eax
- xor eax, ebx
- pop edi
- pop esi
- pop ebp
- pop ebx
- popfd
- ret
- ;-----------------------------------------------------------------------------
- ; int x264_cpu_cpuid( int op, int *eax, int *ebx, int *ecx, int *edx )
- ;-----------------------------------------------------------------------------
- cglobal x264_cpu_cpuid, 0,6
- mov eax, r0m
- cpuid
- mov esi, r1m
- mov [esi], eax
- mov esi, r2m
- mov [esi], ebx
- mov esi, r3m
- mov [esi], ecx
- mov esi, r4m
- mov [esi], edx
- RET
- ;-----------------------------------------------------------------------------
- ; void x264_stack_align( void (*func)(void*), void *arg );
- ;-----------------------------------------------------------------------------
- cglobal x264_stack_align
- push ebp
- mov ebp, esp
- sub esp, 8
- and esp, ~15
- mov ecx, [ebp+8]
- mov edx, [ebp+12]
- mov [esp], edx
- mov edx, [ebp+16]
- mov [esp+4], edx
- call ecx
- leave
- ret
- %endif
- ;-----------------------------------------------------------------------------
- ; void x264_emms( void )
- ;-----------------------------------------------------------------------------
- cglobal x264_emms
- emms
- ret
- ;-----------------------------------------------------------------------------
- ; void x264_cpu_mask_misalign_sse(void)
- ;-----------------------------------------------------------------------------
- cglobal x264_cpu_mask_misalign_sse
- sub rsp, 4
- stmxcsr [rsp]
- or dword [rsp], 1<<17
- ldmxcsr [rsp]
- add rsp, 4
- ret