[mirror_edk2.git] / MdePkg / Library / BaseCpuLib / Arm / CpuSleep.asm

;------------------------------------------------------------------------------\r
;\r
; CpuSleep() for ARMv7\r
;\r
; ARMv6 versions was:\r
;    MOV r0,#0\r
;    MCR p15,0,r0,c7,c0,4   ;Wait for Interrupt instruction\r
;\r
; But this is a no-op on ARMv7\r
;\r
; Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
; Portions copyright (c) 2008 - 2011, Apple Inc. All rights reserved.<BR>\r
; SPDX-License-Identifier: BSD-2-Clause-Patent\r
;\r
;------------------------------------------------------------------------------\r
\r
  EXPORT CpuSleep\r
  AREA cpu_sleep, CODE, READONLY\r
\r
;/**\r
;  Places the CPU in a sleep state until an interrupt is received.\r
;\r
;  Places the CPU in a sleep state until an interrupt is received. If interrupts\r
;  are disabled prior to calling this function, then the CPU will be placed in a\r
;  sleep state indefinitely.\r
;\r
;**/\r
;VOID\r
;EFIAPI\r
;CpuSleep (\r
;  VOID\r
;  );\r
;\r
CpuSleep\r
    WFI\r
    BX LR\r
\r
  END\r
Commit	Line	Data
	1	;------------------------------------------------------------------------------\r
	2	;\r
	3	; CpuSleep() for ARMv7\r
	4	;\r
	5	; ARMv6 versions was:\r
	6	; MOV r0,#0\r
	7	; MCR p15,0,r0,c7,c0,4 ;Wait for Interrupt instruction\r
	8	;\r
	9	; But this is a no-op on ARMv7\r
	10	;\r
	11	; Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
	12	; Portions copyright (c) 2008 - 2011, Apple Inc. All rights reserved.<BR>\r
	13	; SPDX-License-Identifier: BSD-2-Clause-Patent\r
	14	;\r
	15	;------------------------------------------------------------------------------\r
	16	\r
	17	EXPORT CpuSleep\r
	18	AREA cpu_sleep, CODE, READONLY\r
	19	\r
	20	;/**\r
	21	; Places the CPU in a sleep state until an interrupt is received.\r
	22	;\r
	23	; Places the CPU in a sleep state until an interrupt is received. If interrupts\r
	24	; are disabled prior to calling this function, then the CPU will be placed in a\r
	25	; sleep state indefinitely.\r
	26	;\r
	27	;**/\r
	28	;VOID\r
	29	;EFIAPI\r
	30	;CpuSleep (\r
	31	; VOID\r
	32	; );\r
	33	;\r
	34	CpuSleep\r
	35	WFI\r
	36	BX LR\r
	37	\r
	38	END\r