8c1e795168
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Olivier Martin <olivier.martin@arm.com> Reviewed-by: Liming Gao <liming.gao@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14615 6f19259b-4bc3-4df7-8a09-765794883524
40 lines
1.0 KiB
ArmAsm
40 lines
1.0 KiB
ArmAsm
##------------------------------------------------------------------------------
|
|
#
|
|
# MemoryFence() for AArch64
|
|
#
|
|
# Copyright (c) 2013, ARM Ltd. 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.
|
|
#
|
|
##------------------------------------------------------------------------------
|
|
|
|
.text
|
|
.p2align 2
|
|
|
|
GCC_ASM_EXPORT(MemoryFence)
|
|
|
|
|
|
#/**
|
|
# Used to serialize load and store operations.
|
|
#
|
|
# All loads and stores that proceed calls to this function are guaranteed to be
|
|
# globally visible when this function returns.
|
|
#
|
|
#**/
|
|
#VOID
|
|
#EFIAPI
|
|
#MemoryFence (
|
|
# VOID
|
|
# );
|
|
#
|
|
ASM_PFX(MemoryFence):
|
|
// System wide Data Memory Barrier.
|
|
dmb sy
|
|
ret
|