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dd51a993 | 1 | /** @file\r |
2 | ScanMem8() implementation.\r | |
3 | \r | |
2bfb6009 | 4 | The following BaseMemoryLib instances contain the same copy of this file:\r |
dd51a993 | 5 | \r |
6 | BaseMemoryLib\r | |
7 | BaseMemoryLibMmx\r | |
8 | BaseMemoryLibSse2\r | |
9 | BaseMemoryLibRepStr\r | |
2bfb6009 LG |
10 | BaseMemoryLibOptDxe\r |
11 | BaseMemoryLibOptPei\r | |
dd51a993 | 12 | PeiMemoryLib\r |
1fef058f | 13 | UefiMemoryLib\r |
dd51a993 | 14 | \r |
1fef058f | 15 | Copyright (c) 2006 - 2009, Intel Corporation<BR>\r |
eb1c78db | 16 | All rights reserved. This program and the accompanying materials\r |
17 | are licensed and made available under the terms and conditions of the BSD License\r | |
18 | which accompanies this distribution. The full text of the license may be found at\r | |
19 | http://opensource.org/licenses/bsd-license.php\r | |
dd51a993 | 20 | \r |
eb1c78db | 21 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
22 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
23 | \r | |
24 | **/\r | |
1ece02b5 | 25 | \r |
dd51a993 | 26 | #include "MemLibInternals.h"\r |
27 | \r | |
28 | /**\r | |
29 | Scans a target buffer for an 8-bit value, and returns a pointer to the matching 8-bit value\r | |
30 | in the target buffer.\r | |
31 | \r | |
32 | This function searches target the buffer specified by Buffer and Length from the lowest\r | |
33 | address to the highest address for an 8-bit value that matches Value. If a match is found,\r | |
34 | then a pointer to the matching byte in the target buffer is returned. If no match is found,\r | |
35 | then NULL is returned. If Length is 0, then NULL is returned.\r | |
eb1c78db | 36 | \r |
dd51a993 | 37 | If Length > 0 and Buffer is NULL, then ASSERT().\r |
eb1c78db | 38 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r |
dd51a993 | 39 | \r |
40 | @param Buffer Pointer to the target buffer to scan.\r | |
41 | @param Length Number of bytes in Buffer to scan.\r | |
42 | @param Value Value to search for in the target buffer.\r | |
43 | \r | |
44 | @return A pointer to the matching byte in the target buffer or NULL otherwise.\r | |
45 | \r | |
46 | **/\r | |
47 | VOID *\r | |
48 | EFIAPI\r | |
49 | ScanMem8 (\r | |
50 | IN CONST VOID *Buffer,\r | |
51 | IN UINTN Length,\r | |
52 | IN UINT8 Value\r | |
53 | )\r | |
54 | {\r | |
55 | if (Length == 0) {\r | |
56 | return NULL;\r | |
57 | }\r | |
58 | ASSERT (Buffer != NULL);\r | |
59 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));\r | |
60 | \r | |
61 | return (VOID*)InternalMemScanMem8 (Buffer, Length, Value);\r | |
62 | }\r |