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diff --git a/MdePkg/Library/BaseLib/Ia32/ReadIdtr.s b/MdePkg/Library/BaseLib/Ia32/ReadIdtr.s
new file mode 100644
index 0000000000..fa72d3ba7d
--- /dev/null
+++ b/MdePkg/Library/BaseLib/Ia32/ReadIdtr.s
@@ -0,0 +1,42 @@
+#------------------------------------------------------------------------------
+#
+# 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:
+#
+#   ReadIdtr.Asm
+#
+# Abstract:
+#
+#   AsmReadIdtr function
+#
+# Notes:
+#
+#------------------------------------------------------------------------------
+
+
+
+     
+
+#------------------------------------------------------------------------------
+# VOID
+# EFIAPI
+# AsmReadIdtr (
+#   OUT IA32_DESCRIPTOR  *Idtr
+#   );
+#------------------------------------------------------------------------------
+.global _AsmReadIdtr
+_AsmReadIdtr: 
+    movl    4(%esp),%eax
+    sidt    (%eax)
+    ret
+
+
+