MdePkg/Library/BaseLib/X64/InterlockedCompareExchange64.c

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