aboutsummaryrefslogtreecommitdiffstats
path: root/MdePkg/Library/BaseLib/Arm/MemoryFence.S
blob: 2208dd35442a8aae6ce1f22306681ff53b5ee36c (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
##------------------------------------------------------------------------------
#
# 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
    bx   lr