libbpg-0.9.6
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197
x265/source/common/x86/cpu-a.asm
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197
x265/source/common/x86/cpu-a.asm
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;*****************************************************************************
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;* cpu-a.asm: x86 cpu utilities
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;*****************************************************************************
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;* Copyright (C) 2003-2013 x264 project
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;*
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;* Authors: Laurent Aimar <fenrir@via.ecp.fr>
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;* Loren Merritt <lorenm@u.washington.edu>
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;* Fiona Glaser <fiona@x264.com>
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;*
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;* This program is free software; you can redistribute it and/or modify
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;* it under the terms of the GNU General Public License as published by
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;* the Free Software Foundation; either version 2 of the License, or
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;* (at your option) any later version.
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;*
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;* This program is distributed in the hope that it will be useful,
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;* but WITHOUT ANY WARRANTY; without even the implied warranty of
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;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;* GNU General Public License for more details.
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;*
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;* You should have received a copy of the GNU General Public License
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;* along with this program; if not, write to the Free Software
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;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
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;*
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;* This program is also available under a commercial proprietary license.
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;* For more information, contact us at license @ x265.com.
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;*****************************************************************************
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%include "x86inc.asm"
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SECTION .text
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;-----------------------------------------------------------------------------
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; void cpu_cpuid( int op, int *eax, int *ebx, int *ecx, int *edx )
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;-----------------------------------------------------------------------------
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cglobal cpu_cpuid, 5,7
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push rbx
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push r4
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push r3
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push r2
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push r1
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mov eax, r0d
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xor ecx, ecx
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cpuid
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pop r4
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mov [r4], eax
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pop r4
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mov [r4], ebx
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pop r4
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mov [r4], ecx
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pop r4
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mov [r4], edx
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pop rbx
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RET
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;-----------------------------------------------------------------------------
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; void cpu_xgetbv( int op, int *eax, int *edx )
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;-----------------------------------------------------------------------------
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cglobal cpu_xgetbv, 3,7
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push r2
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push r1
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mov ecx, r0d
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xgetbv
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pop r4
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mov [r4], eax
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pop r4
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mov [r4], edx
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RET
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%if ARCH_X86_64
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;-----------------------------------------------------------------------------
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; void stack_align( void (*func)(void*), void *arg );
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;-----------------------------------------------------------------------------
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cglobal stack_align
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push rbp
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mov rbp, rsp
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%if WIN64
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sub rsp, 32 ; shadow space
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%endif
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and rsp, ~31
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mov rax, r0
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mov r0, r1
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mov r1, r2
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mov r2, r3
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call rax
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leave
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ret
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%else
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;-----------------------------------------------------------------------------
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; int cpu_cpuid_test( void )
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; return 0 if unsupported
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;-----------------------------------------------------------------------------
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cglobal cpu_cpuid_test
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pushfd
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push ebx
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push ebp
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push esi
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push edi
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pushfd
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pop eax
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mov ebx, eax
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xor eax, 0x200000
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push eax
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popfd
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pushfd
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pop eax
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xor eax, ebx
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pop edi
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pop esi
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pop ebp
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pop ebx
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popfd
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ret
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cglobal stack_align
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push ebp
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mov ebp, esp
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sub esp, 12
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and esp, ~31
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mov ecx, [ebp+8]
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mov edx, [ebp+12]
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mov [esp], edx
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mov edx, [ebp+16]
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mov [esp+4], edx
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mov edx, [ebp+20]
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mov [esp+8], edx
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call ecx
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leave
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ret
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%endif
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;-----------------------------------------------------------------------------
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; void cpu_emms( void )
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;-----------------------------------------------------------------------------
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cglobal cpu_emms
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emms
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ret
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;-----------------------------------------------------------------------------
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; void cpu_sfence( void )
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;-----------------------------------------------------------------------------
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cglobal cpu_sfence
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sfence
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ret
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cextern intel_cpu_indicator_init
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;-----------------------------------------------------------------------------
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; void safe_intel_cpu_indicator_init( void );
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;-----------------------------------------------------------------------------
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cglobal safe_intel_cpu_indicator_init
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push r0
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push r1
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push r2
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push r3
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push r4
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push r5
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push r6
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%if ARCH_X86_64
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push r7
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push r8
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push r9
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push r10
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push r11
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push r12
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push r13
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push r14
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%endif
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push rbp
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mov rbp, rsp
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%if WIN64
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sub rsp, 32 ; shadow space
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%endif
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and rsp, ~31
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call intel_cpu_indicator_init
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leave
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%if ARCH_X86_64
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pop r14
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pop r13
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pop r12
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pop r11
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pop r10
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pop r9
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pop r8
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pop r7
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%endif
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pop r6
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pop r5
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pop r4
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pop r3
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pop r2
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pop r1
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pop r0
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ret
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