X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=MdePkg%2FLibrary%2FBaseMemoryLibOptDxe%2FScanMem8Wrapper.c;h=e72c71e1db2118cced32b2920f517887231c8e34;hb=decaac5d0d4a5ae348035a33e820ffd902103383;hp=d66b1a2666203a4f4d1b7cfc6efd7bc5e59b145b;hpb=2bfb60098f608dc32ff5d22b0fd087c1636b0881;p=mirror_edk2.git
diff --git a/MdePkg/Library/BaseMemoryLibOptDxe/ScanMem8Wrapper.c b/MdePkg/Library/BaseMemoryLibOptDxe/ScanMem8Wrapper.c
index d66b1a2666..e72c71e1db 100644
--- a/MdePkg/Library/BaseMemoryLibOptDxe/ScanMem8Wrapper.c
+++ b/MdePkg/Library/BaseMemoryLibOptDxe/ScanMem8Wrapper.c
@@ -1,14 +1,5 @@
/** @file
- ScanMem8() implementation.
-
- Copyright (c) 2006, Intel Corporation
- All rights reserved. This program and the accompanying materials
- are licensed and made available under the terms and conditions of the BSD License
- which accompanies this distribution. The full text of the license may be found at
- http://opensource.org/licenses/bsd-license.php
-
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+ ScanMem8() and ScanMemN() implementation.
The following BaseMemoryLib instances contain the same copy of this file:
@@ -19,12 +10,18 @@
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
- DxeMemoryLib
-
-**/
+ UefiMemoryLib
+ Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php.
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+**/
#include "MemLibInternals.h"
@@ -32,16 +29,17 @@
Scans a target buffer for an 8-bit value, and returns a pointer to the matching 8-bit value
in the target buffer.
- This function searches target the buffer specified by Buffer and Length from the lowest
+ This function searches the target buffer specified by Buffer and Length from the lowest
address to the highest address for an 8-bit value that matches Value. If a match is found,
then a pointer to the matching byte in the target buffer is returned. If no match is found,
then NULL is returned. If Length is 0, then NULL is returned.
+
If Length > 0 and Buffer is NULL, then ASSERT().
- If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+ If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
- @param Buffer Pointer to the target buffer to scan.
- @param Length Number of bytes in Buffer to scan.
- @param Value Value to search for in the target buffer.
+ @param Buffer The pointer to the target buffer to scan.
+ @param Length The number of bytes in Buffer to scan.
+ @param Value The value to search for in the target buffer.
@return A pointer to the matching byte in the target buffer or NULL otherwise.
@@ -59,6 +57,44 @@ ScanMem8 (
}
ASSERT (Buffer != NULL);
ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));
-
+
return (VOID*)InternalMemScanMem8 (Buffer, Length, Value);
}
+
+/**
+ Scans a target buffer for a UINTN sized value, and returns a pointer to the matching
+ UINTN sized value in the target buffer.
+
+ This function searches the target buffer specified by Buffer and Length from the lowest
+ address to the highest address for a UINTN sized value that matches Value. If a match is found,
+ then a pointer to the matching byte in the target buffer is returned. If no match is found,
+ then NULL is returned. If Length is 0, then NULL is returned.
+
+ If Length > 0 and Buffer is NULL, then ASSERT().
+ If Buffer is not aligned on a UINTN boundary, then ASSERT().
+ If Length is not aligned on a UINTN boundary, then ASSERT().
+ If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+
+ @param Buffer The pointer to the target buffer to scan.
+ @param Length The number of bytes in Buffer to scan.
+ @param Value
+The value to search for in the target buffer.
+
+ @return A pointer to the matching byte in the target buffer or NULL otherwise.
+
+**/
+VOID *
+EFIAPI
+ScanMemN (
+ IN CONST VOID *Buffer,
+ IN UINTN Length,
+ IN UINTN Value
+ )
+{
+ if (sizeof (UINTN) == sizeof (UINT64)) {
+ return ScanMem64 (Buffer, Length, (UINT64)Value);
+ } else {
+ return ScanMem32 (Buffer, Length, (UINT32)Value);
+ }
+}
+