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f1baef62 | 1 | #------------------------------------------------------------------------------ |
2 | # | |
c2049caa | 3 | # Copyright (c) 2006 - 2008, Intel Corporation |
f1baef62 | 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 | # | |
c2049caa | 14 | # CpuIdEx.S |
f1baef62 | 15 | # |
16 | # Abstract: | |
17 | # | |
18 | # AsmCpuidEx function | |
19 | # | |
20 | # Notes: | |
21 | # | |
22 | #------------------------------------------------------------------------------ | |
23 | ||
24 | #------------------------------------------------------------------------------ | |
25 | # UINT32 | |
26 | # EFIAPI | |
27 | # AsmCpuidEx ( | |
28 | # IN UINT32 RegisterInEax, | |
29 | # IN UINT32 RegisterInEcx, | |
30 | # OUT UINT32 *RegisterOutEax OPTIONAL, | |
31 | # OUT UINT32 *RegisterOutEbx OPTIONAL, | |
32 | # OUT UINT32 *RegisterOutEcx OPTIONAL, | |
33 | # OUT UINT32 *RegisterOutEdx OPTIONAL | |
34 | # ) | |
35 | #------------------------------------------------------------------------------ | |
85c25283 | 36 | .global ASM_PFX(AsmCpuidEx) |
37 | ASM_PFX(AsmCpuidEx): | |
f1baef62 | 38 | push %rbx |
39 | movl %ecx,%eax | |
40 | movl %edx,%ecx | |
41 | push %rax | |
42 | cpuid | |
43 | mov 0x38(%rsp), %r10 | |
44 | test %r10, %r10 | |
45 | jz L1 | |
46 | mov %ecx,(%r10) | |
47 | L1: | |
48 | mov %r8, %rcx | |
49 | jrcxz L2 | |
50 | movl %eax,(%rcx) | |
51 | L2: | |
52 | mov %r9, %rcx | |
53 | jrcxz L3 | |
54 | mov %ebx, (%rcx) | |
55 | L3: | |
56 | mov 0x40(%rsp), %rcx | |
57 | jrcxz L4 | |
58 | mov %edx, (%rcx) | |
59 | L4: | |
60 | pop %rax | |
61 | pop %rbx | |
62 | ret |