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

;------------------------------------------------------------------------------\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
  EXPORT MemoryFence\r
  AREA BaseLib_LowLevel, CODE, READONLY\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
MemoryFence\r
    // System wide Data Memory Barrier.\r
    dmb sy\r
    ret\r
\r
  END\r
Commit	Line	Data
da351bdb PB	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
da351bdb PB	8	;\r
	9	;------------------------------------------------------------------------------\r
	10	\r
	11	EXPORT MemoryFence\r
	12	AREA BaseLib_LowLevel, CODE, READONLY\r
	13	\r
	14	;/**\r
	15	; Used to serialize load and store operations.\r
	16	;\r
	17	; All loads and stores that proceed calls to this function are guaranteed to be\r
	18	; globally visible when this function returns.\r
	19	;\r
	20	;**/\r
	21	;VOID\r
	22	;EFIAPI\r
	23	;MemoryFence (\r
	24	; VOID\r
	25	; );\r
	26	;\r
	27	MemoryFence\r
	28	// System wide Data Memory Barrier.\r
	29	dmb sy\r
	30	ret\r
	31	\r
	32	END\r