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3f8f7fa5 | 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 | # WriteMsr64.S | |
15 | # | |
16 | # Abstract: | |
17 | # | |
18 | # AsmWriteMsr64 function | |
19 | # | |
20 | # Notes: | |
21 | # | |
22 | #------------------------------------------------------------------------------ | |
23 | ||
24 | ||
25 | #------------------------------------------------------------------------------ | |
26 | # UINT64 | |
27 | # EFIAPI | |
28 | # AsmWriteMsr64 ( | |
29 | # IN UINT32 Index, | |
30 | # IN UINT64 Value | |
31 | # ); | |
32 | # TODO: | |
33 | #------------------------------------------------------------------------------ | |
34e4a9a6 | 34 | .global ASM_PFX(AsmWriteMsr64) |
35 | .align 16 | |
36 | ASM_PFX(AsmWriteMsr64): | |
3f8f7fa5 | 37 | mov %rdx, %rax |
38 | shr $0x20, %rdx | |
39 | wrmsr | |
40 | ret |