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| author | Guo Mang <mang.guo@intel.com> | 2017-04-27 11:08:17 +0800 |
|---|---|---|
| committer | Guo Mang <mang.guo@intel.com> | 2017-04-27 11:08:17 +0800 |
| commit | b0724f89e3b05de1d6492e79ec89f6d467cb14f0 (patch) | |
| tree | e4a9eff6dc255621c2f0a08d61d32bf95087a7a9 /Core/MdePkg/Library/BaseLib/X64/ReadMsr64.asm | |
| parent | c23f114d3cfbb29b8734b87213d1ec0de404197b (diff) | |
| download | edk2-platforms-b0724f89e3b05de1d6492e79ec89f6d467cb14f0.tar.xz | |
MdePkg: Move to new location
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Guo Mang <mang.guo@intel.com>
Diffstat (limited to 'Core/MdePkg/Library/BaseLib/X64/ReadMsr64.asm')
| -rw-r--r-- | Core/MdePkg/Library/BaseLib/X64/ReadMsr64.asm | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/Core/MdePkg/Library/BaseLib/X64/ReadMsr64.asm b/Core/MdePkg/Library/BaseLib/X64/ReadMsr64.asm new file mode 100644 index 0000000000..878ed18245 --- /dev/null +++ b/Core/MdePkg/Library/BaseLib/X64/ReadMsr64.asm @@ -0,0 +1,40 @@ +;------------------------------------------------------------------------------
+;
+; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
+; This program and the accompanying materials
+; are licensed and made available under the terms and conditions of the BSD License
+; which accompanies this distribution. The full text of the license may be found at
+; http://opensource.org/licenses/bsd-license.php.
+;
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+;
+; Module Name:
+;
+; ReadMsr64.Asm
+;
+; Abstract:
+;
+; AsmReadMsr64 function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+ .code
+
+;------------------------------------------------------------------------------
+; UINT64
+; EFIAPI
+; AsmReadMsr64 (
+; IN UINT32 Index
+; );
+;------------------------------------------------------------------------------
+AsmReadMsr64 PROC
+ rdmsr ; edx & eax are zero extended
+ shl rdx, 20h
+ or rax, rdx
+ ret
+AsmReadMsr64 ENDP
+
+ END
|