1. Fixed incorrect ASSERT conditions in wrapper functions.

[mirror_edk2.git] / MdePkg / Library / BaseMemoryLib / CompareMemWrapper.c

/** @file\r
  CompareMem() implementation.\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
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\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
  Module Name:  CompareMemWrapper.c\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
    UefiMemoryLib\r
\r
**/\r
\r
#include "MemLibInternals.h"\r
\r
/**\r
  Compares two memory buffers of a given length.\r
\r
  This function compares Length bytes of SourceBuffer to Length bytes of\r
  DestinationBuffer. If all Length bytes of the two buffers are identical, then\r
  0 is returned. Otherwise, the value returned is the first mismatched byte in\r
  SourceBuffer subtracted from the first mismatched byte in DestinationBuffer.\r
\r
  If DestinationBuffer is NULL and Length > 0, then ASSERT().\r
  If SourceBuffer is NULL and Length > 0, then ASSERT().\r
  If Length is greater than (MAX_ADDRESS - DestinationBuffer + 1), then\r
  ASSERT().\r
  If Length is greater than (MAX_ADDRESS - SourceBuffer + 1), then ASSERT().\r
\r
  @param  DestinationBuffer First memory buffer\r
  @param  SourceBuffer      Second memory buffer\r
  @param  Length            Length of DestinationBuffer and SourceBuffer memory\r
                            regions to compare\r
\r
  @retval 0         if DestinationBuffer == SourceBuffer\r
  @retval Non-zero  if DestinationBuffer != SourceBuffer\r
\r
**/\r
INTN\r
EFIAPI\r
CompareMem (\r
  IN      CONST VOID                *DestinationBuffer,\r
  IN      CONST VOID                *SourceBuffer,\r
  IN      UINTN                     Length\r
  )\r
{\r
  ASSERT (DestinationBuffer != NULL);\r
  ASSERT (SourceBuffer != NULL);\r
  ASSERT (Length <= MAX_ADDRESS - (UINTN)DestinationBuffer + 1);\r
  ASSERT (Length <= MAX_ADDRESS - (UINTN)SourceBuffer + 1);\r
  if (Length == 0) {\r
    return 0;\r
  }\r
  return InternalMemCompareMem (DestinationBuffer, SourceBuffer, Length);\r
}\r