interlockedcompareexchange32.asm

来自「EFI BIOS是Intel提出的下一代的BIOS标准。这里上传的Edk源代码是」· 汇编 代码 · 共 44 行

; Copyright (c) 2004, Intel Corporation                                                         
; All rights reserved. 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:
;
;   InterlockedCompareExchange32.Asm
;
; Abstract:
;
;   InterlockedCompareExchange32 function
;
; Notes:
;
;------------------------------------------------------------------------------

    .486
    .model  flat,C
    .code

;------------------------------------------------------------------------------
; UINT32
; EFIAPI
; InternalSyncCompareExchange32 (
;   IN      UINT32                    *Value,
;   IN      UINT32                    CompareValue,
;   IN      UINT32                    ExchangeValue
;   );
;------------------------------------------------------------------------------
InternalSyncCompareExchange32   PROC
    mov     ecx, [esp + 4]
    mov     eax, [esp + 8]
    mov     edx, [esp + 12]
    lock    cmpxchg [ecx], edx
    ret
InternalSyncCompareExchange32   ENDP

    END