audk/MdePkg/Library/BaseLib/X64/ReadDr4.S

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#------------------------------------------------------------------------------
#
# 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:
#
# ReadDr4.S
#
# Abstract:
#
# AsmReadDr4 function
#
# Notes:
#
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
# UINTN
# EFIAPI
# AsmReadDr4 (
# VOID
# );
#------------------------------------------------------------------------------
.global ASM_PFX(AsmReadDr4)
.align 16
ASM_PFX(AsmReadDr4):
#DB 0fh, 21h, 0e0h
mov %dr4, %rax
ret