mirror of https://github.com/acidanthera/audk.git
41 lines
1.2 KiB
NASM
41 lines
1.2 KiB
NASM
;------------------------------------------------------------------------------
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;
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; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
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; This program and the accompanying materials
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; are licensed and made available under the terms and conditions of the BSD License
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; which accompanies this distribution. The full text of the license may be found at
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; http://opensource.org/licenses/bsd-license.php.
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;
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; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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;
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; Module Name:
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;
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; ReadMsr64.Asm
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;
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; Abstract:
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;
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; AsmReadMsr64 function
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;
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; Notes:
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;
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;------------------------------------------------------------------------------
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.code
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;------------------------------------------------------------------------------
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; UINT64
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; EFIAPI
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; AsmReadMsr64 (
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; IN UINT32 Index
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; );
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;------------------------------------------------------------------------------
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AsmReadMsr64 PROC
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rdmsr ; edx & eax are zero extended
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shl rdx, 20h
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or rax, rdx
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ret
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AsmReadMsr64 ENDP
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END
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