/** @file\r
CompareMem() implementation.\r
\r
+ The following BaseMemoryLib instances contain the same copy of this file:\r
+ BaseMemoryLib\r
+ BaseMemoryLibMmx\r
+ BaseMemoryLibSse2\r
+ BaseMemoryLibRepStr\r
+ BaseMemoryLibOptDxe\r
+ BaseMemoryLibOptPei\r
+ PeiMemoryLib\r
+ DxeMemoryLib\r
+\r
Copyright (c) 2006, Intel Corporation<BR>\r
All rights reserved. This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
- The following BaseMemoryLib instances share the same version of this file:\r
-\r
- BaseMemoryLib\r
- BaseMemoryLibMmx\r
- BaseMemoryLibSse2\r
- BaseMemoryLibRepStr\r
- PeiMemoryLib\r
- DxeMemoryLib\r
-\r
**/\r
\r
-//\r
-// Include common header file for this module.\r
-//\r
-\r
-\r
#include "MemLibInternals.h"\r
\r
/**\r
If all Length bytes of the two buffers are identical, then 0 is returned. Otherwise, the\r
value returned is the first mismatched byte in SourceBuffer subtracted from the first\r
mismatched byte in DestinationBuffer.\r
- If Length > 0 and DestinationBuffer is NULL and Length > 0, then ASSERT().\r
- If Length > 0 and SourceBuffer is NULL and Length > 0, then ASSERT().\r
- If Length is greater than (MAX_ADDRESS - DestinationBuffer + 1), then ASSERT(). \r
- If Length is greater than (MAX_ADDRESS - SourceBuffer + 1), then ASSERT(). \r
\r
+ If Length > 0 and DestinationBuffer is NULL, then ASSERT().\r
+ If Length > 0 and SourceBuffer is NULL, then ASSERT().\r
+ If Length is greater than (MAX_ADDRESS - DestinationBuffer + 1), then ASSERT().\r
+ If Length is greater than (MAX_ADDRESS - SourceBuffer + 1), then ASSERT().\r
\r
@param DestinationBuffer Pointer to the destination buffer to compare.\r
@param SourceBuffer Pointer to the source buffer to compare.\r
IN UINTN Length\r
)\r
{\r
- if (Length == 0) {\r
+ if (Length == 0 || DestinationBuffer == SourceBuffer) {\r
return 0;\r
}\r
ASSERT (DestinationBuffer != NULL);\r