[mirror_edk2.git] / MdePkg / Library / BaseLib / AArch64 / MemoryFence.S

##------------------------------------------------------------------------------\r
#\r
# MemoryFence() for AArch64\r
#\r
# Copyright (c) 2013, ARM Ltd. All rights reserved.\r
#\r
# SPDX-License-Identifier: BSD-2-Clause-Patent\r
#\r
##------------------------------------------------------------------------------\r
\r
.text\r
.p2align 2\r
\r
GCC_ASM_EXPORT(MemoryFence)\r
\r
\r
#/**\r
#  Used to serialize load and store operations.\r
#\r
#  All loads and stores that proceed calls to this function are guaranteed to be\r
#  globally visible when this function returns.\r
#\r
#**/\r
#VOID\r
#EFIAPI\r
#MemoryFence (\r
#  VOID\r
#  );\r
#\r
ASM_PFX(MemoryFence):\r
    // System wide Data Memory Barrier.\r
    dmb sy\r
    ret\r
Commit	Line	Data
8c1e7951 OM	1	##------------------------------------------------------------------------------\r
	2	#\r
	3	# MemoryFence() for AArch64\r
	4	#\r
	5	# Copyright (c) 2013, ARM Ltd. All rights reserved.\r
	6	#\r
9344f092	7	# SPDX-License-Identifier: BSD-2-Clause-Patent\r
8c1e7951 OM	8	#\r
	9	##------------------------------------------------------------------------------\r
	10	\r
	11	.text\r
	12	.p2align 2\r
	13	\r
	14	GCC_ASM_EXPORT(MemoryFence)\r
	15	\r
	16	\r
	17	#/**\r
	18	# Used to serialize load and store operations.\r
	19	#\r
	20	# All loads and stores that proceed calls to this function are guaranteed to be\r
	21	# globally visible when this function returns.\r
	22	#\r
	23	#**/\r
	24	#VOID\r
	25	#EFIAPI\r
	26	#MemoryFence (\r
	27	# VOID\r
	28	# );\r
	29	#\r
	30	ASM_PFX(MemoryFence):\r
	31	// System wide Data Memory Barrier.\r
	32	dmb sy\r
	33	ret\r