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1 | ;------------------------------------------------------------------------------ | |
2 | ; | |
3 | ; Copyright (c) 2006, Intel Corporation | |
4 | ; All rights reserved. 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 | ; CpuIdEx.Asm | |
15 | ; | |
16 | ; Abstract: | |
17 | ; | |
18 | ; AsmCpuidEx function | |
19 | ; | |
20 | ; Notes: | |
21 | ; | |
22 | ;------------------------------------------------------------------------------ | |
23 | ||
24 | .code | |
25 | ||
26 | ;------------------------------------------------------------------------------ | |
27 | ; UINT32 | |
28 | ; EFIAPI | |
29 | ; AsmCpuidEx ( | |
30 | ; IN UINT32 RegisterInEax, | |
31 | ; IN UINT32 RegisterInEcx, | |
32 | ; OUT UINT32 *RegisterOutEax OPTIONAL, | |
33 | ; OUT UINT32 *RegisterOutEbx OPTIONAL, | |
34 | ; OUT UINT32 *RegisterOutEcx OPTIONAL, | |
35 | ; OUT UINT32 *RegisterOutEdx OPTIONAL | |
36 | ; ) | |
37 | ;------------------------------------------------------------------------------ | |
38 | AsmCpuidEx PROC USES rbx | |
39 | mov eax, ecx | |
40 | mov ecx, edx | |
41 | push rax ; save Index on stack | |
42 | cpuid | |
43 | mov r10, [rsp + 38h] | |
44 | test r10, r10 | |
45 | jz @F | |
46 | mov [r10], ecx | |
47 | @@: | |
48 | mov rcx, r8 | |
49 | jrcxz @F | |
50 | mov [rcx], eax | |
51 | @@: | |
52 | mov rcx, r9 | |
53 | jrcxz @F | |
54 | mov [rcx], ebx | |
55 | @@: | |
56 | mov rcx, [rsp + 40h] | |
57 | jrcxz @F | |
58 | mov [rcx], edx | |
59 | @@: | |
60 | pop rax ; restore Index to rax as return value | |
61 | ret | |
62 | AsmCpuidEx ENDP | |
63 | ||
64 | END |