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diff --git a/EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/ia32/ReadIdt.asm b/EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/ia32/ReadIdt.asm
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+++ b/EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/ia32/ReadIdt.asm
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+;------------------------------------------------------------------------------
+;
+; Copyright (c) 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:
+;
+; ReadIdtBase.Asm
+;
+; Abstract:
+;
+; ReadIdtBase function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+ .586
+ .model flat,C
+ .mmx
+ .code
+
+;------------------------------------------------------------------------------
+; UINTN
+; ReadIdtBase (
+; void
+; )
+;
+; Abstract: Returns physical address of IDTR
+;
+ReadIdtBase PROC C PUBLIC
+ LOCAL IdtrBuf:FWORD
+ sidt IdtrBuf
+ mov eax, DWORD PTR IdtrBuf + 2
+ ret
+ReadIdtBase ENDP
+
+;------------------------------------------------------------------------------
+; UINT16
+; ReadIdtLimit (
+; void
+; )
+;
+; Abstract: Returns Limit of IDTR
+;
+ReadIdtLimit PROC C PUBLIC
+ LOCAL IdtrBuf:FWORD
+ sidt IdtrBuf
+ mov ax, WORD PTR IdtrBuf
+ ret
+ReadIdtLimit ENDP
+
+
+ END