audk/MdePkg/Library/BaseLib/X64/WriteMsr64.S

41 lines
1.1 KiB
ArmAsm
Raw Normal View History

#------------------------------------------------------------------------------
#
# Copyright (c) 2006, Intel Corporation
# All rights reserved. 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:
#
# WriteMsr64.S
#
# Abstract:
#
# AsmWriteMsr64 function
#
# Notes:
#
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
# UINT64
# EFIAPI
# AsmWriteMsr64 (
# IN UINT32 Index,
# IN UINT64 Value
# );
# TODO:
#------------------------------------------------------------------------------
.global _AsmWriteMsr64;
.align 16;
_AsmWriteMsr64:
mov %rdx, %rax
shr $0x20, %rdx
wrmsr
ret