;------------------------------------------------------------------------------
;
; Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
; Copyright (c) 2015, Linaro Ltd. All rights reserved.<BR>
; SPDX-License-Identifier: BSD-2-Clause-Patent
;
; Module Name:
;
;   InterlockedCompareExchange16.Asm
;
; Abstract:
;
;   InterlockedCompareExchange16 function
;
; Notes:
;
;------------------------------------------------------------------------------

    DEFAULT REL
    SECTION .text

;------------------------------------------------------------------------------
; UINT16
; EFIAPI
; InternalSyncCompareExchange16 (
;   IN      volatile UINT16           *Value,
;   IN      UINT16                    CompareValue,
;   IN      UINT16                    ExchangeValue
;   );
;------------------------------------------------------------------------------
global ASM_PFX(InternalSyncCompareExchange16)
ASM_PFX(InternalSyncCompareExchange16):
    mov     ax, dx
    lock    cmpxchg [rcx], r8w
    ret