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diff --git a/OldMdePkg/Library/BaseLib/x86WriteGdtr.c b/OldMdePkg/Library/BaseLib/x86WriteGdtr.c
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+++ b/OldMdePkg/Library/BaseLib/x86WriteGdtr.c
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+/** @file
+ IA-32/x64 AsmWriteGdtr()
+
+ 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: x86GetInterruptState.c
+
+**/
+
+#include "BaseLibInternals.h"
+
+/**
+ Writes the current Global Descriptor Table Register (GDTR) descriptor.
+
+ Writes and the current GDTR descriptor specified by Gdtr. This function is
+ only available on IA-32 and X64.
+
+ If Gdtr is NULL, then ASSERT().
+
+ @param Gdtr Pointer to a GDTR descriptor.
+
+**/
+VOID
+EFIAPI
+AsmWriteGdtr (
+ IN CONST IA32_DESCRIPTOR *Gdtr
+ )
+{
+ ASSERT (Gdtr != NULL);
+ InternalX86WriteGdtr (Gdtr);
+}