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diff --git a/MdePkg/Library/BaseLib/Ipf/AsmCpuMisc.s b/MdePkg/Library/BaseLib/Ipf/AsmCpuMisc.s
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--- a/MdePkg/Library/BaseLib/Ipf/AsmCpuMisc.s
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-/// @file
-/// Contains an implementation of CallPalProcStacked on Itanium-based
-/// architecture.
-///
-/// Copyright (c) 2008, 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: AsmCpuMisc.s
-///
-///
-
-
-.text
-.proc CpuBreakpoint
-.type CpuBreakpoint, @function
-
-CpuBreakpoint::
- break.i 0;;
- br.ret.dpnt b0;;
-
-.endp CpuBreakpoint
-
-.proc MemoryFence
-.type MemoryFence, @function
-
-MemoryFence::
- mf;; // memory access ordering
-
- // do we need the mf.a also here?
- mf.a // wait for any IO to complete?
-
- // not sure if we need serialization here, just put it, in case...
-
- srlz.d;;
- srlz.i;;
-
- br.ret.dpnt b0;;
-.endp MemoryFence
-
-.proc DisableInterrupts
-.type DisableInterrupts, @function
-
-DisableInterrupts::
- rsm 0x4000
- srlz.d;;
- br.ret.dpnt b0;;
-
-.endp DisableInterrupts
-
-.proc EnableInterrupts
-.type EnableInterrupts, @function
-
-EnableInterrupts::
- ssm 0x4000
- srlz.d;;
- br.ret.dpnt b0;;
-
-.endp EnableInterrupts
-
-.proc EnableDisableInterrupts
-.type EnableDisableInterrupts, @function
-
-EnableDisableInterrupts::
- ssm 0x4000
- srlz.d;;
- srlz.i;;
- rsm 0x4000
- srlz.d;;
-
- br.ret.dpnt b0;;
-
-.endp EnableDisableInterrupts
-