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91 lines
2.5 KiB
91 lines
2.5 KiB
;***************************************************************************** |
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;* Copyright (C) 2005-2010 x264 project |
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;* |
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;* Authors: Loren Merritt <lorenm@u.washington.edu> |
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;* Fiona Glaser <fiona@x264.com> |
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;* |
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;* This file is part of Libav. |
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;* |
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;* Libav is free software; you can redistribute it and/or |
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;* modify it under the terms of the GNU Lesser General Public |
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;* License as published by the Free Software Foundation; either |
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;* version 2.1 of the License, or (at your option) any later version. |
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;* |
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;* Libav 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 GNU |
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;* Lesser General Public License for more details. |
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;* |
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;* You should have received a copy of the GNU Lesser General Public |
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;* License along with Libav; if not, write to the Free Software |
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;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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;****************************************************************************** |
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%include "x86util.asm" |
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SECTION .text |
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;----------------------------------------------------------------------------- |
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; void ff_cpu_cpuid(int index, 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 ff_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 == 0 |
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;----------------------------------------------------------------------------- |
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; int ff_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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%endif
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