EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseMemoryLib/SetMem.c

   1 /*++
   2
   3 Copyright (c) 2004 - 2006, Intel Corporation
   4 All rights reserved. This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12
  13 Module Name:
  14
  15   SetMem.c
  16
  17 Abstract:
  18
  19   Internal SetMem
  20
  21 --*/
  22
  23 #include "BaseMemoryLibInternal.h"
  24
  25 /**
  26   Set Buffer to Value for Size bytes.
  27
  28   @param  Buffer Memory to set.
  29   @param  Size Number of bytes to set
  30   @param  Value Value of the set operation.
  31
  32   @return Buffer
  33
  34 **/
  35 VOID *
  36 EFIAPI
  37 InternalMemSetMem (
  38   IN      VOID                      *Buffer,
  39   IN      UINTN                     Size,
  40   IN      UINT8                     Value
  41   )
  42 {
  43   //
  44   // Declare the local variables that actually move the data elements as
  45   // volatile to prevent the optimizer from replacing this function with
  46   // the intrinsic memset()
  47   //
  48   volatile UINT8                    *Pointer;
  49
  50   Pointer = (UINT8*)Buffer;
  51   while (Size-- != 0) {
  52     *(Pointer++) = Value;
  53   }
  54   return Buffer;
  55 }