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diff --git a/EDK/Foundation/Library/EdkIIGlueLib/Library/UefiRuntimeServicesTableLib/UefiRuntimeServicesTableLib.c b/EDK/Foundation/Library/EdkIIGlueLib/Library/UefiRuntimeServicesTableLib/UefiRuntimeServicesTableLib.c
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+++ b/EDK/Foundation/Library/EdkIIGlueLib/Library/UefiRuntimeServicesTableLib/UefiRuntimeServicesTableLib.c
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+/*++
+
+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:
+
+ UefiRuntimeServicesTableLib.c
+
+Abstract:
+
+ UEFI Runtime Services Table Library.
+
+--*/
+
+#include "EdkIIGlueUefi.h"
+
+EFI_RUNTIME_SERVICES *gRT = NULL;
+
+/**
+ The constructor function caches the pointer of Runtime Services Table.
+
+ The constructor function caches the pointer of Runtime Services Table.
+ It will ASSERT() if the pointer of Runtime Services Table is NULL.
+ It will always return EFI_SUCCESS.
+
+ @param ImageHandle The firmware allocated handle for the EFI image.
+ @param SystemTable A pointer to the EFI System Table.
+
+ @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
+
+**/
+EFI_STATUS
+UefiRuntimeServicesTableLibConstructor (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ //
+ // Cache pointer to the EFI Runtime Services Table
+ //
+ gRT = SystemTable->RuntimeServices;
+ ASSERT (gRT != NULL);
+ return EFI_SUCCESS;
+}