6f890d5b40
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6639 6f19259b-4bc3-4df7-8a09-765794883524
40 lines
1.2 KiB
ArmAsm
40 lines
1.2 KiB
ArmAsm
#------------------------------------------------------------------------------
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#
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# Copyright (c) 2006 - 2008, Intel Corporation
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# All rights reserved. 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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# WriteMsr64.S
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#
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# Abstract:
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#
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# AsmWriteMsr64 function
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#
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# Notes:
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#
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#------------------------------------------------------------------------------
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#------------------------------------------------------------------------------
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# UINT64
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# EFIAPI
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# AsmWriteMsr64 (
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# IN UINT32 Index,
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# IN UINT64 Value
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# );
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#------------------------------------------------------------------------------
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.global ASM_PFX(AsmWriteMsr64)
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.align 16
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ASM_PFX(AsmWriteMsr64):
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mov %rdx, %rax # meanwhile, rax <- return value
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shr $0x20, %rdx # edx:eax contains the value to write
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wrmsr
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ret
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