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    .586P
25    .model  flat,C
26    .code
27
28;------------------------------------------------------------------------------
29;  VOID
30;  EFIAPI
31;  AsmCpuid (
32;    IN   UINT32  RegisterInEax,
33;    OUT  UINT32  *RegisterOutEax  OPTIONAL,
34;    OUT  UINT32  *RegisterOutEbx  OPTIONAL,
35;    OUT  UINT32  *RegisterOutEcx  OPTIONAL,
36;    OUT  UINT32  *RegisterOutEdx  OPTIONAL
37;    );
38;------------------------------------------------------------------------------
39AsmCpuid    PROC    USES    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   @F
47    mov     [ecx], eax
48@@:
49    mov     ecx, [ebp + 20]
50    jecxz   @F
51    mov     [ecx], ebx
52@@:
53    mov     ecx, [ebp + 24]
54    jecxz   @F
55    pop     DWORD [ecx]
56@@:
57    mov     ecx, [ebp + 28]
58    jecxz   @F
59    mov     [ecx], edx
60@@:
61    mov     eax, [ebp + 12]
62    leave
63    ret
64AsmCpuid    ENDP
65
66    END
67