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23086ba8 | 1 | /** @file\r |
2 | AsmCpuidEx function.\r | |
3 | \r | |
e5f461a8 | 4 | Copyright (c) 2006 - 2007, Intel Corporation<BR>\r |
23086ba8 | 5 | All rights reserved. This program and the accompanying materials\r |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
23086ba8 | 15 | UINT32\r |
16 | EFIAPI\r | |
17 | AsmCpuidEx (\r | |
18 | IN UINT32 Index,\r | |
19 | IN UINT32 SubIndex,\r | |
20 | OUT UINT32 *RegisterEax, OPTIONAL\r | |
21 | OUT UINT32 *RegisterEbx, OPTIONAL\r | |
22 | OUT UINT32 *RegisterEcx, OPTIONAL\r | |
23 | OUT UINT32 *RegisterEdx OPTIONAL\r | |
24 | )\r | |
25 | {\r | |
26 | _asm {\r | |
27 | mov eax, Index\r | |
28 | mov ecx, SubIndex\r | |
29 | cpuid\r | |
30 | push ecx\r | |
31 | mov ecx, RegisterEax\r | |
32 | jecxz SkipEax\r | |
33 | mov [ecx], eax\r | |
34 | SkipEax:\r | |
35 | mov ecx, RegisterEbx\r | |
36 | jecxz SkipEbx\r | |
37 | mov [ecx], ebx\r | |
38 | SkipEbx:\r | |
39 | pop eax\r | |
40 | mov ecx, RegisterEcx\r | |
41 | jecxz SkipEcx\r | |
42 | mov [ecx], eax\r | |
43 | SkipEcx:\r | |
44 | mov ecx, RegisterEdx\r | |
45 | jecxz SkipEdx\r | |
46 | mov [ecx], edx\r | |
47 | SkipEdx:\r | |
48 | mov eax, Index\r | |
49 | }\r | |
50 | }\r |