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878ddf1f | 1 | #------------------------------------------------------------------------------\r |
2 | #\r | |
3 | # Copyright (c) 2006, Intel Corporation\r | |
4 | # All rights reserved. This program and the accompanying materials\r | |
5 | # are licensed and made available under the terms and conditions of the BSD License\r | |
6 | # which accompanies this distribution. The full text of the license may be found at\r | |
7 | # http://opensource.org/licenses/bsd-license.php\r | |
8 | #\r | |
9 | # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
10 | # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
11 | #\r | |
12 | # Module Name:\r | |
13 | #\r | |
14 | # CpuId.Asm\r | |
15 | #\r | |
16 | # Abstract:\r | |
17 | #\r | |
18 | # AsmCpuid function\r | |
19 | #\r | |
20 | # Notes:\r | |
21 | #\r | |
22 | #------------------------------------------------------------------------------\r | |
23 | \r | |
a2b1bf96 | 24 | .globl ASM_PFX(AsmCpuid)\r |
878ddf1f | 25 | \r |
878ddf1f | 26 | #------------------------------------------------------------------------------\r |
27 | # VOID\r | |
28 | # EFIAPI\r | |
29 | # AsmCpuid (\r | |
30 | # IN UINT32 RegisterInEax,\r | |
31 | # OUT UINT32 *RegisterOutEax OPTIONAL,\r | |
32 | # OUT UINT32 *RegisterOutEbx OPTIONAL,\r | |
33 | # OUT UINT32 *RegisterOutEcx OPTIONAL,\r | |
34 | # OUT UINT32 *RegisterOutEdx OPTIONAL\r | |
35 | # )\r | |
36 | #------------------------------------------------------------------------------\r | |
a2b1bf96 | 37 | ASM_PFX(AsmCpuid):\r |
3f566587 | 38 | push %ebx\r |
39 | push %ebp\r | |
1fe4ef1b | 40 | movl %esp, %ebp\r |
41 | movl 12(%ebp), %eax\r | |
878ddf1f | 42 | cpuid\r |
3f566587 | 43 | push %ecx\r |
1fe4ef1b | 44 | movl 16(%ebp), %ecx\r |
878ddf1f | 45 | jecxz L1\r |
1fe4ef1b | 46 | movl %eax, (%ecx)\r |
3f566587 | 47 | L1:\r |
1fe4ef1b | 48 | movl 20(%ebp), %ecx\r |
878ddf1f | 49 | jecxz L2\r |
1fe4ef1b | 50 | movl %ebx, (%ecx)\r |
3f566587 | 51 | L2:\r |
1fe4ef1b | 52 | movl 24(%ebp), %ecx\r |
878ddf1f | 53 | jecxz L3\r |
1fe4ef1b | 54 | popl (%ecx)\r |
3f566587 | 55 | L3:\r |
1fe4ef1b | 56 | movl 28(%ebp), %ecx\r |
878ddf1f | 57 | jecxz L4\r |
1fe4ef1b | 58 | movl %edx, (%ecx)\r |
3f566587 | 59 | L4:\r |
1fe4ef1b | 60 | movl 12(%ebp), %eax\r |
61 | leave\r | |
3f566587 | 62 | pop %ebx\r |
878ddf1f | 63 | ret\r |