1 /** @file
2 SetMem() and SetMemN() implementation.
3
4 The following BaseMemoryLib instances contain the same copy of this file:
5
6 BaseMemoryLib
7 BaseMemoryLibMmx
8 BaseMemoryLibSse2
9 BaseMemoryLibRepStr
10 BaseMemoryLibOptDxe
11 BaseMemoryLibOptPei
12 PeiMemoryLib
13 UefiMemoryLib
14
15 Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
16 This program and the accompanying materials
17 are licensed and made available under the terms and conditions of the BSD License
18 which accompanies this distribution. The full text of the license may be found at
19 http://opensource.org/licenses/bsd-license.php.
20
21 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
22 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
23
24 **/
25
26 #include "MemLibInternals.h"
27
28 /**
29 Fills a target buffer with a byte value, and returns the target buffer.
30
31 This function fills Length bytes of Buffer with Value, and returns Buffer.
32
33 If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
34
35 @param Buffer The memory to set.
36 @param Length The number of bytes to set.
37 @param Value The value with which to fill Length bytes of Buffer.
38
39 @return Buffer.
40
41 **/
42 VOID *
43 EFIAPI
SetMem(OUT VOID * Buffer,IN UINTN Length,IN UINT8 Value)44 SetMem (
45 OUT VOID *Buffer,
46 IN UINTN Length,
47 IN UINT8 Value
48 )
49 {
50 if (Length == 0) {
51 return Buffer;
52 }
53
54 ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));
55
56 return InternalMemSetMem (Buffer, Length, Value);
57 }
58
59 /**
60 Fills a target buffer with a value that is size UINTN, and returns the target buffer.
61
62 This function fills Length bytes of Buffer with the UINTN sized value specified by
63 Value, and returns Buffer. Value is repeated every sizeof(UINTN) bytes for Length
64 bytes of Buffer.
65
66 If Length > 0 and Buffer is NULL, then ASSERT().
67 If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
68 If Buffer is not aligned on a UINTN boundary, then ASSERT().
69 If Length is not aligned on a UINTN boundary, then ASSERT().
70
71 @param Buffer The pointer to the target buffer to fill.
72 @param Length The number of bytes in Buffer to fill.
73 @param Value The value with which to fill Length bytes of Buffer.
74
75 @return Buffer.
76
77 **/
78 VOID *
79 EFIAPI
SetMemN(OUT VOID * Buffer,IN UINTN Length,IN UINTN Value)80 SetMemN (
81 OUT VOID *Buffer,
82 IN UINTN Length,
83 IN UINTN Value
84 )
85 {
86 if (sizeof (UINTN) == sizeof (UINT64)) {
87 return SetMem64 (Buffer, Length, (UINT64)Value);
88 } else {
89 return SetMem32 (Buffer, Length, (UINT32)Value);
90 }
91 }
92