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;------------------------------------------------------------------------------
;
; Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
; SPDX-License-Identifier: BSD-2-Clause-Patent
;
; Module Name:
;
; InterlockedCompareExchange64.Asm
;
; Abstract:
;
; InterlockedCompareExchange64 function
;
; Notes:
;
;------------------------------------------------------------------------------
DEFAULT REL
SECTION .text
;------------------------------------------------------------------------------
; UINT64
; EFIAPI
; InternalSyncCompareExchange64 (
; IN volatile UINT64 *Value,
; IN UINT64 CompareValue,
; IN UINT64 ExchangeValue
; );
;------------------------------------------------------------------------------
global ASM_PFX(InternalSyncCompareExchange64)
ASM_PFX(InternalSyncCompareExchange64):
mov rax, rdx
lock cmpxchg [rcx], r8
ret
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