X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdePkg%2FLibrary%2FBaseMemoryLibRepStr%2FCompareMemWrapper.c;h=6c539a685ea017bdbbb48ba96b8627269c0edb74;hp=b816af7489b08ac0fb6c9bfe845cbeeb6f19303e;hb=9344f0921518309295da89c221d10cbead8531aa;hpb=e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/CompareMemWrapper.c b/MdePkg/Library/BaseMemoryLibRepStr/CompareMemWrapper.c
index b816af7489..6c539a685e 100644
--- a/MdePkg/Library/BaseMemoryLibRepStr/CompareMemWrapper.c
+++ b/MdePkg/Library/BaseMemoryLibRepStr/CompareMemWrapper.c
@@ -1,32 +1,20 @@
/** @file
CompareMem() 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.
-
- Module Name: CompareMemWrapper.c
-
- 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 common header file for this module.
-//
-#include "CommonHeader.h"
+**/
#include "MemLibInternals.h"
@@ -37,15 +25,15 @@
If all Length bytes of the two buffers are identical, then 0 is returned. Otherwise, the
value returned is the first mismatched byte in SourceBuffer subtracted from the first
mismatched byte in DestinationBuffer.
- If Length > 0 and DestinationBuffer is NULL and Length > 0, then ASSERT().
- If Length > 0 and SourceBuffer is NULL and Length > 0, then ASSERT().
- If Length is greater than (MAX_ADDRESS - DestinationBuffer + 1), then ASSERT().
- If Length is greater than (MAX_ADDRESS - SourceBuffer + 1), then ASSERT().
+ If Length > 0 and DestinationBuffer is NULL, then ASSERT().
+ If Length > 0 and SourceBuffer is NULL, then ASSERT().
+ If Length is greater than (MAX_ADDRESS - DestinationBuffer + 1), then ASSERT().
+ If Length is greater than (MAX_ADDRESS - SourceBuffer + 1), then ASSERT().
- @param DestinationBuffer Pointer to the destination buffer to compare.
- @param SourceBuffer Pointer to the source buffer to compare.
- @param Length Number of bytes to compare.
+ @param DestinationBuffer The pointer to the destination buffer to compare.
+ @param SourceBuffer The pointer to the source buffer to compare.
+ @param Length The number of bytes to compare.
@return 0 All Length bytes of the two buffers are identical.
@retval Non-zero The first mismatched byte in SourceBuffer subtracted from the first
@@ -60,7 +48,7 @@ CompareMem (
IN UINTN Length
)
{
- if (Length == 0) {
+ if (Length == 0 || DestinationBuffer == SourceBuffer) {
return 0;
}
ASSERT (DestinationBuffer != NULL);