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;------------------------------------------------------------------------------
;
; Copyright (c) 2006, Intel Corporation. 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:
;
; InterlockedCompareExchange64.Asm
;
; Abstract:
;
; InterlockedCompareExchange64 function
;
; Notes:
;
;------------------------------------------------------------------------------
SECTION .text
;------------------------------------------------------------------------------
; UINT64
; EFIAPI
; InternalSyncCompareExchange64 (
; IN UINT64 *Value,
; IN UINT64 CompareValue,
; IN UINT64 ExchangeValue
; );
;------------------------------------------------------------------------------
global ASM_PFX(InternalSyncCompareExchange64)
ASM_PFX(InternalSyncCompareExchange64):
push esi
push ebx
mov esi, [esp + 12]
mov eax, [esp + 16]
mov edx, [esp + 20]
mov ebx, [esp + 24]
mov ecx, [esp + 28]
lock cmpxchg8b qword [esi]
pop ebx
pop esi
ret
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