Add in the 1st version of ECP.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2832 6f19259b-4bc3-4df7-8a09-765794883524

EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/EfiCompareGuid.c

@@ -0,0 +1,59 @@
+/*++
+
+Copyright (c) 2004 - 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:
+
+  EfiCompareGuid.c
+
+Abstract:
+
+  Driver library routine to compare two GUIDs.
+
+--*/
+
+#include "Tiano.h"
+#include "EfiDriverLib.h"
+
+BOOLEAN
+EfiCompareGuid (
+  IN EFI_GUID *Guid1,
+  IN EFI_GUID *Guid2
+  )
+/*++
+
+Routine Description:
+
+  Compares two GUIDs
+
+Arguments:
+
+  Guid1 - guid to compare
+
+  Guid2 - guid to compare
+
+Returns:
+  TRUE     if Guid1 == Guid2
+  FALSE    if Guid1 != Guid2
+
+--*/
+{
+  UINTN Index;
+
+  //
+  // compare byte by byte
+  //
+  for (Index = 0; Index < 16; ++Index) {
+    if (*(((UINT8*) Guid1) + Index) != *(((UINT8*) Guid2) + Index)) {
+      return FALSE;
+    }
+  }
+  return TRUE;
+}