Split wrapper functions into separate source files to reduce image code size

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@168 6f19259b-4bc3-4df7-8a09-765794883524

MdePkg/Library/BaseMemoryLibRepStr/CompareMemWrapper.c

@@ -0,0 +1,67 @@
+/** @file
+  CompareMem() implementation.
+
+  Copyright (c) 2006, Intel Corporation<BR>
+  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:
+
+    BaseMemoryLib
+    BaseMemoryLibMmx
+    BaseMemoryLibSse2
+    BaseMemoryLibRepStr
+    PeiMemoryLib
+    UefiMemoryLib
+
+**/
+
+#include "MemLibInternals.h"
+
+/**
+  Compares two memory buffers of a given length.
+
+  This function compares Length bytes of SourceBuffer to Length bytes of
+  DestinationBuffer. 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 DestinationBuffer is NULL and Length > 0, then ASSERT().
+  If 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().
+
+  @param  DestinationBuffer First memory buffer
+  @param  SourceBuffer      Second memory buffer
+  @param  Length            Length of DestinationBuffer and SourceBuffer memory
+                            regions to compare
+
+  @retval 0         if DestinationBuffer == SourceBuffer
+  @retval Non-zero  if DestinationBuffer != SourceBuffer
+
+**/
+INTN
+EFIAPI
+CompareMem (
+  IN      CONST VOID                *DestinationBuffer,
+  IN      CONST VOID                *SourceBuffer,
+  IN      UINTN                     Length
+  )
+{
+  ASSERT (DestinationBuffer != NULL);
+  ASSERT (SourceBuffer != NULL);
+  ASSERT (Length <= MAX_ADDRESS - (UINTN)DestinationBuffer + 1);
+  ASSERT (Length <= MAX_ADDRESS - (UINTN)SourceBuffer + 1);
+  if (Length == 0) {
+    return 0;
+  }
+  return InternalMemCompareMem (DestinationBuffer, SourceBuffer, Length);
+}