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diff --git a/Core/MdePkg/Library/BaseLib/Ipf/AccessDbr.s b/Core/MdePkg/Library/BaseLib/Ipf/AccessDbr.s
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+/// @file
+///  IPF specific Debug Breakpoint Registers accessing functions
+///
+/// Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
+/// 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: AccessDbr.s
+///
+///
+
+//---------------------------------------------------------------------------------
+//++
+// AsmReadDbr
+//
+// This routine is used to Reads the current value of Data Breakpoint Register (DBR).
+//
+// Arguments :
+//
+// On Entry : The 8-bit DBR index to read.
+//
+// Return Value: The current value of DBR by Index.
+//
+//--
+//----------------------------------------------------------------------------------
+.text
+.type   AsmReadDbr, @function
+.proc   AsmReadDbr
+.regstk 1, 0, 0, 0
+
+AsmReadDbr::
+        mov             r8 = dbr[in0];;
+        br.ret.dpnt     b0;;
+.endp   AsmReadDbr
+
+//---------------------------------------------------------------------------------
+//++
+// AsmWriteDbr
+//
+// This routine is used to write the current value to Data Breakpoint Register (DBR).
+//
+// Arguments :
+//
+// On Entry : The 8-bit DBR index to read.
+//            The value should be written to DBR
+//
+// Return Value: The value written to DBR.
+//
+//--
+//----------------------------------------------------------------------------------
+.text
+.type   AsmWriteDbr, @function
+.proc   AsmWriteDbr
+.regstk 2, 0, 0, 0
+
+AsmWriteDbr::
+        mov             dbr[in0] = in1
+        mov             r8 = in1;;
+        srlz.d;;
+        br.ret.dpnt     b0;;
+.endp   AsmWriteDbr
+
+
+//---------------------------------------------------------------------------------
+//++
+// AsmReadIbr
+//
+// This routine is used to Reads the current value of Instruction Breakpoint Register (IBR).
+//
+// Arguments :
+//
+// On Entry : The 8-bit IBR index.
+//
+// Return Value: The current value of IBR by Index.
+//
+//--
+//----------------------------------------------------------------------------------
+.text
+.type   AsmReadIbr, @function
+.proc   AsmReadIbr
+.regstk 1, 0, 0, 0
+
+AsmReadIbr::
+        mov             r8 = ibr[in0];;
+        br.ret.dpnt     b0;;
+.endp   AsmReadIbr
+
+//---------------------------------------------------------------------------------
+//++
+// AsmWriteIbr
+//
+// This routine is used to write the current value to Instruction Breakpoint Register (IBR).
+//
+// Arguments :
+//
+// On Entry : The 8-bit IBR index.
+//            The value should be written to IBR
+//
+// Return Value: The value written to IBR.
+//
+//--
+//----------------------------------------------------------------------------------
+.text
+.type   AsmWriteIbr, @function
+.proc   AsmWriteIbr
+.regstk 2, 0, 0, 0
+
+AsmWriteIbr::
+        mov             ibr[in0] = in1
+        mov             r8 = in1;;
+        srlz.i;;
+        br.ret.dpnt     b0;;
+.endp   AsmWriteIbr