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diff --git a/OldMdePkg/Library/BaseLib/Ipf/AccessPmr.s b/OldMdePkg/Library/BaseLib/Ipf/AccessPmr.s
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+/// @file
+///  IPF specific Performance Monitor Configuration/Data Registers accessing functions
+///
+/// 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: AccessPmr.s
+///
+///
+
+//---------------------------------------------------------------------------------
+//++
+// AsmReadPmc
+//
+// This routine is used to Reads the current value of Performance Monitor Configuration Register (PMC).
+//
+// Arguments :
+//
+// On Entry : The 8-bit PMC index.
+//
+// Return Value: The current value of PMC by Index.
+//
+//--
+//----------------------------------------------------------------------------------
+.text
+.type   AsmReadPmc, @function
+.proc   AsmReadPmc
+.regstk 1, 0, 0, 0
+
+AsmReadPmc::
+        srlz.i;;
+        srlz.d;;
+        mov             r8 = pmc[in0];;
+        br.ret.dpnt     b0;;
+.endp   AsmReadPmc
+
+//---------------------------------------------------------------------------------
+//++
+// AsmWritePmc
+//
+// This routine is used to write the current value to a Performance Monitor Configuration Register (PMC).
+//
+// Arguments :
+//
+// On Entry : The 8-bit PMC index.
+//            The value should be written to PMC
+//
+// Return Value: The value written to PMC.
+//
+//--
+//----------------------------------------------------------------------------------
+.text
+.type   AsmWritePmc, @function
+.proc   AsmWritePmc
+.regstk 2, 0, 0, 0
+
+AsmWritePmc::
+        mov             pmc[in0] = in1
+        mov             r8 = in1;;
+        srlz.i;;
+        srlz.d;;
+        br.ret.dpnt     b0;;
+.endp   AsmWritePmc
+
+
+//---------------------------------------------------------------------------------
+//++
+// AsmReadPmd
+//
+// This routine is used to Reads the current value of Performance Monitor Data Register (PMD).
+//
+// Arguments :
+//
+// On Entry : The 8-bit PMD index.
+//
+// Return Value: The current value of PMD by Index.
+//
+//--
+//----------------------------------------------------------------------------------
+.text
+.type   AsmReadPmd, @function
+.proc   AsmReadPmd
+.regstk 1, 0, 0, 0
+
+AsmReadPmd::
+        srlz.i;;
+        srlz.d;;
+        mov             r8 = pmd[in0];;
+        br.ret.dpnt     b0;;
+.endp   AsmReadPmd
+
+//---------------------------------------------------------------------------------
+//++
+// AsmWritePmd
+//
+// This routine is used to write the current value to Performance Monitor Data Register (PMD).
+//
+// Arguments :
+//
+// On Entry : The 8-bit PMD index.
+//            The value should be written to PMD
+//
+// Return Value: The value written to PMD.
+//
+//--
+//----------------------------------------------------------------------------------
+.text
+.type   AsmWritePmd, @function
+.proc   AsmWritePmd
+.regstk 2, 0, 0, 0
+
+AsmWritePmd::
+        mov             pmd[in0] = in1
+        mov             r8 = in1;;
+        srlz.i;;
+        srlz.d;;
+        br.ret.dpnt     b0;;
+.endp   AsmWritePmd