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diff --git a/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/RRotU64.c b/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/RRotU64.c
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+++ b/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/RRotU64.c
@@ -0,0 +1,50 @@
+/*++
+
+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:
+
+  RRotU64.c
+  
+Abstract: 
+
+  Math worker functions.
+
+--*/
+
+#include "BaseLibInternal.h"
+
+/**
+  Rotates a 64-bit integer right between 0 and 63 bits, filling the high bits
+  with the high low bits that were rotated.
+
+  This function rotates the 64-bit value Operand to the right by Count bits.
+  The high Count bits are fill with the low Count bits of Operand. The rotated
+  value is returned.
+
+  If Count is greater than 63, then ASSERT().
+
+  @param  Operand The 64-bit operand to rotate right.
+  @param  Count   The number of bits to rotate right.
+
+  @return Operand >>> Count
+
+**/
+UINT64
+EFIAPI
+RRotU64 (
+  IN      UINT64                    Operand,
+  IN      UINTN                     Count
+  )
+{
+  ASSERT (Count < sizeof (Operand) * 8);
+  return InternalMathRRotU64 (Operand, Count);
+}