[mirror_edk2.git] / MdePkg / Library / BaseSynchronizationLib / X64 / InterlockedCompareExchange16.asm

;------------------------------------------------------------------------------
;
; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
; Copyright (c) 2015, Linaro Ltd. All rights reserved.<BR>
; 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.
;
; Module Name:
;
;   InterlockedCompareExchange16.Asm
;
; Abstract:
;
;   InterlockedCompareExchange16 function
;
; Notes:
;
;------------------------------------------------------------------------------

    .code

;------------------------------------------------------------------------------
; UINT16
; EFIAPI
; InterlockedCompareExchange16 (
;   IN      UINT16                    *Value,
;   IN      UINT16                    CompareValue,
;   IN      UINT16                    ExchangeValue
;   );
;------------------------------------------------------------------------------
InternalSyncCompareExchange16   PROC
    mov     ax, dx
    lock    cmpxchg [rcx], r8w
    ret
InternalSyncCompareExchange16   ENDP

    END
Commit	Line	Data
9b89163e AB	1	;------------------------------------------------------------------------------
	2	;
	3	; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
	4	; Copyright (c) 2015, Linaro Ltd. All rights reserved.<BR>
	5	; This program and the accompanying materials
	6	; are licensed and made available under the terms and conditions of the BSD License
	7	; which accompanies this distribution. The full text of the license may be found at
	8	; http://opensource.org/licenses/bsd-license.php.
	9	;
	10	; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
	11	; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
	12	;
	13	; Module Name:
	14	;
	15	; InterlockedCompareExchange16.Asm
	16	;
	17	; Abstract:
	18	;
	19	; InterlockedCompareExchange16 function
	20	;
	21	; Notes:
	22	;
	23	;------------------------------------------------------------------------------
	24
	25	.code
	26
	27	;------------------------------------------------------------------------------
	28	; UINT16
	29	; EFIAPI
	30	; InterlockedCompareExchange16 (
	31	; IN UINT16 *Value,
	32	; IN UINT16 CompareValue,
	33	; IN UINT16 ExchangeValue
	34	; );
	35	;------------------------------------------------------------------------------
	36	InternalSyncCompareExchange16 PROC
	37	mov ax, dx
	38	lock cmpxchg [rcx], r8w
	39	ret
	40	InternalSyncCompareExchange16 ENDP
	41
	42	END