MdePkg/Library/BaseLib/X64/InterlockedDecrement.c

   1 /** @file
   2   InterlockedDecrement function
   3
   4   Copyright (c) 2006, 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 #if _MSC_EXTENSIONS
  16
  17 //
  18 // Microsoft Visual Studio 7.1 Function Prototypes for I/O Intrinsics
  19 //
  20 long _InterlockedDecrement(
  21    long * lpAddend
  22 );
  23
  24 #pragma intrinsic(_InterlockedDecrement)
  25
  26 UINT32
  27 EFIAPI
  28 InternalSyncDecrement (
  29   IN      UINT32                    *Value
  30   )
  31 {
  32   return _InterlockedDecrement (Value);
  33 }
  34
  35 #endif