X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdePkg%2FLibrary%2FBaseMemoryLibRepStr%2FScanMem8Wrapper.c;h=f2bf7d6f689200c8b45a4b332c577946a98d06f8;hp=215cbc510efc48cd3ee8841cc0eef4b1ededdb02;hb=9344f0921518309295da89c221d10cbead8531aa;hpb=1efcc4ae46f52e3845923ffbab68426e068709d2
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/ScanMem8Wrapper.c b/MdePkg/Library/BaseMemoryLibRepStr/ScanMem8Wrapper.c
index 215cbc510e..f2bf7d6f68 100644
--- a/MdePkg/Library/BaseMemoryLibRepStr/ScanMem8Wrapper.c
+++ b/MdePkg/Library/BaseMemoryLibRepStr/ScanMem8Wrapper.c
@@ -1,28 +1,21 @@
/** @file
- ScanMem8() implementation.
+ ScanMem8() and ScanMemN() 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.
-
- The following BaseMemoryLib instances share the same version of this file:
+ The following BaseMemoryLib instances contain the same copy of this file:
BaseMemoryLib
BaseMemoryLibMmx
BaseMemoryLibSse2
BaseMemoryLibRepStr
+ BaseMemoryLibOptDxe
+ BaseMemoryLibOptPei
PeiMemoryLib
- DxeMemoryLib
-
-**/
-
+ UefiMemoryLib
+ Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
#include "MemLibInternals.h"
@@ -30,16 +23,17 @@
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.
@@ -52,11 +46,48 @@ ScanMem8 (
IN UINT8 Value
)
{
- if (0 == Length) {
+ if (Length == 0) {
return NULL;
}
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);
+ }
+}
+