1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
;*****************************************************************************
;* Copyright (C) 2005-2010 x264 project
;*
;* Authors: Loren Merritt <lorenm@u.washington.edu>
;* Jason Garrett-Glaser <darkshikari@gmail.com>
;*
;* This file is part of Libav.
;*
;* Libav is free software; you can redistribute it and/or
;* modify it under the terms of the GNU Lesser General Public
;* License as published by the Free Software Foundation; either
;* version 2.1 of the License, or (at your option) any later version.
;*
;* Libav 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
;* Lesser General Public License for more details.
;*
;* You should have received a copy of the GNU Lesser General Public
;* License along with Libav; if not, write to the Free Software
;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
;******************************************************************************
%include "x86util.asm"
SECTION .text
;-----------------------------------------------------------------------------
; void ff_cpu_cpuid(int index, int *eax, int *ebx, int *ecx, int *edx)
;-----------------------------------------------------------------------------
cglobal cpu_cpuid, 5,7
push rbx
push r4
push r3
push r2
push r1
mov eax, r0d
xor ecx, ecx
cpuid
pop r4
mov [r4], eax
pop r4
mov [r4], ebx
pop r4
mov [r4], ecx
pop r4
mov [r4], edx
pop rbx
RET
;-----------------------------------------------------------------------------
; void ff_cpu_xgetbv(int op, int *eax, int *edx)
;-----------------------------------------------------------------------------
cglobal cpu_xgetbv, 3,7
push r2
push r1
mov ecx, r0d
xgetbv
pop r4
mov [r4], eax
pop r4
mov [r4], edx
RET
%if ARCH_X86_64 == 0
;-----------------------------------------------------------------------------
; int ff_cpu_cpuid_test(void)
; return 0 if unsupported
;-----------------------------------------------------------------------------
cglobal 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
%endif
|
