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cpu-a.asm
Package: chapter15.rar [view]
Upload User: hjq518
Upload Date: 2021-12-09
Package Size: 5084k
Code Size: 3k
Category:
Audio program
Development Platform:
Visual C++
- ;*****************************************************************************
- ;* cpu.asm: h264 encoder library
- ;*****************************************************************************
- ;* Copyright (C) 2003 x264 project
- ;* $Id: cpu.asm,v 1.1 2004/06/03 19:27:07 fenrir Exp $
- ;*
- ;* Authors: Laurent Aimar <fenrir@via.ecp.fr>
- ;*
- ;* 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- ;*****************************************************************************
- BITS 64
- ;=============================================================================
- ; Macros and other preprocessor constants
- ;=============================================================================
- %include "amd64inc.asm"
- ;=============================================================================
- ; Code
- ;=============================================================================
- SECTION .text
- cglobal x264_cpu_cpuid_test
- cglobal x264_cpu_cpuid
- cglobal x264_emms
- ALIGN 16
- ;-----------------------------------------------------------------------------
- ; int x264_cpu_cpuid_test( void ) return 0 if unsupported
- ;-----------------------------------------------------------------------------
- x264_cpu_cpuid_test:
- firstpush rbx
- pushreg rbx
- push rbp
- pushreg rbp
- mov rbp, rsp
- setframe rbp, 0
- endprolog
- pushfq
- pop rax
- mov ebx, eax
- xor eax, 0x200000
- push rax
- popfq
- pushfq
- pop rax
- xor eax, ebx
- lea rsp, [rbp]
- pop rbp
- pop rbx
- ret
- endfunc
- ALIGN 16
- ;-----------------------------------------------------------------------------
- ; int x264_cpu_cpuid( int op, int *eax, int *ebx, int *ecx, int *edx )
- ;-----------------------------------------------------------------------------
- x264_cpu_cpuid:
- firstpush rbx
- pushreg rbx
- endprolog
- mov r10, parm4q
- mov r11, parm3q
- mov r9, parm2q
- %ifdef WIN64
- mov r8, [rsp+40+8]
- %endif
- mov eax, parm1d
- cpuid
- mov [r9], eax
- mov [r11], ebx
- mov [r10], ecx
- mov [r8], edx
- pop rbx
- ret
- endfunc
- ALIGN 16
- ;-----------------------------------------------------------------------------
- ; void x264_emms( void )
- ;-----------------------------------------------------------------------------
- x264_emms:
- emms
- ret