EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseLib/X64/InterlockedCompareExchange64.c

   1 /**
   2   InterlockedCompareExchange64 function
   3
   4   Copyright (c) 2006 - 2007, Intel Corporation. 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 **/
  14
  15 #include "BaseLibInternals.h"
  16
  17 //
  18 // Microsoft Visual Studio 7.1 Function Prototypes for I/O Intrinsics
  19 //
  20 __int64 _InterlockedCompareExchange64(
  21    __int64 volatile * Destination,
  22    __int64 Exchange,
  23    __int64 Comperand
  24 );
  25
  26 #pragma intrinsic(_InterlockedCompareExchange64)
  27
  28 UINT64
  29 EFIAPI
  30 InternalSyncCompareExchange64 (
  31   IN      volatile UINT64           *Value,
  32   IN      UINT64                    CompareValue,
  33   IN      UINT64                    ExchangeValue
  34   )
  35 {
  36   return _InterlockedCompareExchange64 (Value, ExchangeValue, CompareValue);
  37 }
  38