1 /** @file
2 Implementation of the EfiSetMem routine. This function is broken
3 out into its own source file so that it can be excluded from a
4 build for a particular platform easily if an optimized version
5 is desired.
6
7 Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
8 This program and the accompanying materials
9 are licensed and made available under the terms and conditions of the BSD License
10 which accompanies this distribution. The full text of the license may be found at
11 http://opensource.org/licenses/bsd-license.php
12
13 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
14 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
15
16 **/
17
18
19
20
21 #include "MemLibInternals.h"
22
23 /**
24 Set Buffer to Value for Size bytes.
25
26 @param Buffer Memory to set.
27 @param Length Number of bytes to set
28 @param Value Value of the set operation.
29
30 @return Buffer
31
32 **/
33 VOID *
34 EFIAPI
InternalMemSetMem(OUT VOID * Buffer,IN UINTN Length,IN UINT8 Value)35 InternalMemSetMem (
36 OUT VOID *Buffer,
37 IN UINTN Length,
38 IN UINT8 Value
39 )
40 {
41 //
42 // Declare the local variables that actually move the data elements as
43 // volatile to prevent the optimizer from replacing this function with
44 // the intrinsic memset()
45 //
46 volatile UINT8 *Pointer;
47
48 Pointer = (UINT8*)Buffer;
49 while (Length-- > 0) {
50 *(Pointer++) = Value;
51 }
52 return Buffer;
53 }
54