mirror of
https://github.com/acidanthera/audk.git
synced 2025-08-16 15:18:10 +02:00
c4c7fb2174
Add the BTI instructions and the associated note to make the AArch64 asm objects compatible with BTI enforcement. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com> Reviewed-by: Oliver Smith-Denny <osd@smith-denny.com>
35 lines
716 B
ArmAsm
35 lines
716 B
ArmAsm
##------------------------------------------------------------------------------
|
|
#
|
|
# MemoryFence() for AArch64
|
|
#
|
|
# Copyright (c) 2013, ARM Ltd. All rights reserved.
|
|
#
|
|
# SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
#
|
|
##------------------------------------------------------------------------------
|
|
|
|
.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):
|
|
AARCH64_BTI(c)
|
|
// System wide Data Memory Barrier.
|
|
dmb sy
|
|
ret
|