mirror of https://github.com/acidanthera/audk.git
39 lines
1.2 KiB
ArmAsm
39 lines
1.2 KiB
ArmAsm
#------------------------------------------------------------------------------
|
|
#
|
|
# Copyright (c) 2006 - 2008, 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:
|
|
#
|
|
# ReadMsr64.S
|
|
#
|
|
# Abstract:
|
|
#
|
|
# AsmReadMsr64 function
|
|
#
|
|
# Notes:
|
|
#
|
|
#------------------------------------------------------------------------------
|
|
|
|
|
|
#------------------------------------------------------------------------------
|
|
# UINT64
|
|
# EFIAPI
|
|
# AsmReadMsr64 (
|
|
# IN UINT32 Index
|
|
# );
|
|
#------------------------------------------------------------------------------
|
|
ASM_GLOBAL ASM_PFX(AsmReadMsr64)
|
|
.align 16
|
|
ASM_PFX(AsmReadMsr64):
|
|
rdmsr # edx & eax are zero extended
|
|
shl $0x20, %rdx
|
|
or %rdx, %rax
|
|
ret
|