]>
Commit | Line | Data |
---|---|---|
b1ff428c | 1 | #------------------------------------------------------------------------------\r |
2 | #\r | |
373ade0e | 3 | # Copyright (c) 2006 - 2008, Intel Corporation\r |
b1ff428c | 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.S\r | |
15 | #\r | |
16 | # Abstract:\r | |
17 | #\r | |
18 | # AsmCpuid function\r | |
19 | #\r | |
20 | # Notes:\r | |
21 | #\r | |
22 | #------------------------------------------------------------------------------\r | |
23 | \r | |
24 | #------------------------------------------------------------------------------\r | |
25 | # VOID\r | |
26 | # EFIAPI\r | |
27 | # AsmCpuid (\r | |
28 | # IN UINT32 RegisterInEax,\r | |
29 | # OUT UINT32 *RegisterOutEax OPTIONAL,\r | |
30 | # OUT UINT32 *RegisterOutEbx OPTIONAL,\r | |
31 | # OUT UINT32 *RegisterOutEcx OPTIONAL,\r | |
32 | # OUT UINT32 *RegisterOutEdx OPTIONAL\r | |
33 | # )\r | |
34 | #------------------------------------------------------------------------------\r | |
d5172f91 | 35 | ASM_GLOBAL ASM_PFX(AsmCpuid)\r |
b1ff428c | 36 | ASM_PFX(AsmCpuid):\r |
37 | push %rbx\r | |
38 | mov %ecx, %eax\r | |
39 | push %rax # save Index on stack\r | |
40 | push %rdx\r | |
41 | cpuid\r | |
42 | test %r9, %r9\r | |
43 | jz L1\r | |
44 | mov %ecx, (%r9)\r | |
45 | L1:\r | |
46 | pop %rcx\r | |
47 | jrcxz L2\r | |
48 | mov %eax, (%rcx)\r | |
49 | L2:\r | |
50 | mov %r8, %rcx\r | |
51 | jrcxz L3\r | |
52 | mov %ebx, (%rcx)\r | |
53 | L3:\r | |
54 | mov 0x38(%rsp), %rcx\r | |
55 | jrcxz L4\r | |
56 | mov %edx, (%rcx)\r | |
57 | L4:\r | |
58 | pop %rax # restore Index to rax as return value\r | |
59 | pop %rbx\r | |
60 | ret\r |