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e1f414b6 | 1 | /** @file\r |
2 | ScanMem8() implementation.\r | |
3 | \r | |
2bfb6009 | 4 | The following BaseMemoryLib instances contain the same copy of this file:\r |
e1f414b6 | 5 | BaseMemoryLib\r |
6 | BaseMemoryLibMmx\r | |
7 | BaseMemoryLibSse2\r | |
8 | BaseMemoryLibRepStr\r | |
2bfb6009 LG |
9 | BaseMemoryLibOptDxe\r |
10 | BaseMemoryLibOptPei\r | |
e1f414b6 | 11 | PeiMemoryLib\r |
12 | DxeMemoryLib\r | |
13 | \r | |
d531bfee | 14 | Copyright (c) 2006, Intel Corporation<BR>\r |
15 | All rights reserved. This program and the accompanying materials\r | |
16 | are licensed and made available under the terms and conditions of the BSD License\r | |
17 | which accompanies this distribution. The full text of the license may be found at\r | |
18 | http://opensource.org/licenses/bsd-license.php\r | |
19 | \r | |
20 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
21 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
22 | \r | |
e1f414b6 | 23 | **/\r |
24 | \r | |
1efcc4ae | 25 | \r |
f734a10a | 26 | \r |
e1f414b6 | 27 | \r |
28 | #include "MemLibInternals.h"\r | |
29 | \r | |
30 | /**\r | |
31 | Scans a target buffer for an 8-bit value, and returns a pointer to the matching 8-bit value\r | |
32 | in the target buffer.\r | |
33 | \r | |
34 | This function searches target the buffer specified by Buffer and Length from the lowest\r | |
35 | address to the highest address for an 8-bit value that matches Value. If a match is found,\r | |
36 | then a pointer to the matching byte in the target buffer is returned. If no match is found,\r | |
37 | then NULL is returned. If Length is 0, then NULL is returned.\r | |
38 | If Length > 0 and Buffer is NULL, then ASSERT().\r | |
cc4e0485 | 39 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT(). \r |
e1f414b6 | 40 | \r |
41 | @param Buffer Pointer to the target buffer to scan.\r | |
42 | @param Length Number of bytes in Buffer to scan.\r | |
43 | @param Value Value to search for in the target buffer.\r | |
44 | \r | |
45 | @return A pointer to the matching byte in the target buffer or NULL otherwise.\r | |
46 | \r | |
47 | **/\r | |
48 | VOID *\r | |
49 | EFIAPI\r | |
50 | ScanMem8 (\r | |
51 | IN CONST VOID *Buffer,\r | |
52 | IN UINTN Length,\r | |
53 | IN UINT8 Value\r | |
54 | )\r | |
55 | {\r | |
2bfb6009 | 56 | if (Length == 0) {\r |
e1f414b6 | 57 | return NULL;\r |
58 | }\r | |
59 | ASSERT (Buffer != NULL);\r | |
60 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));\r | |
61 | \r | |
62 | return (VOID*)InternalMemScanMem8 (Buffer, Length, Value);\r | |
63 | }\r |