1;------------------------------------------------------------------------------
2;
3; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
4; This program and the accompanying materials
5; are licensed and made available under the terms and conditions of the BSD License
6; which accompanies this distribution.  The full text of the license may be found at
7; http://opensource.org/licenses/bsd-license.php.
8;
9; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
10; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
11;
12; Module Name:
13;
14;   CpuId.Asm
15;
16; Abstract:
17;
18;   AsmCpuid function
19;
20; Notes:
21;
22;------------------------------------------------------------------------------
23
24    SECTION .text
25
26;------------------------------------------------------------------------------
27;  VOID
28;  EFIAPI
29;  AsmCpuid (
30;    IN   UINT32  RegisterInEax,
31;    OUT  UINT32  *RegisterOutEax  OPTIONAL,
32;    OUT  UINT32  *RegisterOutEbx  OPTIONAL,
33;    OUT  UINT32  *RegisterOutEcx  OPTIONAL,
34;    OUT  UINT32  *RegisterOutEdx  OPTIONAL
35;    );
36;------------------------------------------------------------------------------
37global ASM_PFX(AsmCpuid)
38ASM_PFX(AsmCpuid):
39    push    ebx
40    push    ebp
41    mov     ebp, esp
42    mov     eax, [ebp + 12]
43    cpuid
44    push    ecx
45    mov     ecx, [ebp + 16]
46    jecxz   .0
47    mov     [ecx], eax
48.0:
49    mov     ecx, [ebp + 20]
50    jecxz   .1
51    mov     [ecx], ebx
52.1:
53    mov     ecx, [ebp + 24]
54    jecxz   .2
55    pop     DWORD [ecx]
56.2:
57    mov     ecx, [ebp + 28]
58    jecxz   .3
59    mov     [ecx], edx
60.3:
61    mov     eax, [ebp + 12]
62    leave
63    pop     ebx
64    ret
65
66