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diff --git a/OldMdePkg/Library/BaseLib/X64/Non-existing.c b/OldMdePkg/Library/BaseLib/X64/Non-existing.c
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--- a/OldMdePkg/Library/BaseLib/X64/Non-existing.c
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-/** @file
- Non-existing BaseLib functions on x64
-
- 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: Non-existing.c
-
-**/
-
-#include "../BaseLibInternals.h"
-
-/**
- Enables the 32-bit paging mode on the CPU.
-
- Enables the 32-bit paging mode on the CPU. CR0, CR3, CR4, and the page tables
- must be properly initialized prior to calling this service. This function
- assumes the current execution mode is 32-bit protected mode. This function is
- only available on IA-32. After the 32-bit paging mode is enabled, control is
- transferred to the function specified by EntryPoint using the new stack
- specified by NewStack and passing in the parameters specified by Context1 and
- Context2. Context1 and Context2 are optional and may be NULL. The function
- EntryPoint must never return.
-
- There are a number of constraints that must be followed before calling this
- function:
- 1) Interrupts must be disabled.
- 2) The caller must be in 32-bit protected mode with flat descriptors. This
- means all descriptors must have a base of 0 and a limit of 4GB.
- 3) CR0 and CR4 must be compatible with 32-bit protected mode with flat
- descriptors.
- 4) CR3 must point to valid page tables that will be used once the transition
- is complete, and those page tables must guarantee that the pages for this
- function and the stack are identity mapped.
-
- @param EntryPoint A pointer to function to call with the new stack after
- paging is enabled.
- @param Context1 A pointer to the context to pass into the EntryPoint
- function as the first parameter after paging is enabled.
- @param Context2 A pointer to the context to pass into the EntryPoint
- function as the second parameter after paging is enabled.
- @param NewStack A pointer to the new stack to use for the EntryPoint
- function after paging is enabled.
-
-**/
-VOID
-EFIAPI
-InternalX86EnablePaging32 (
- IN SWITCH_STACK_ENTRY_POINT EntryPoint,
- IN VOID *Context1, OPTIONAL
- IN VOID *Context2, OPTIONAL
- IN VOID *NewStack
- )
-{
- //
- // This function cannot work on X64 platform
- //
- ASSERT (FALSE);
-}
-
-/**
- Disables the 32-bit paging mode on the CPU.
-
- Disables the 32-bit paging mode on the CPU and returns to 32-bit protected
- mode. This function assumes the current execution mode is 32-paged protected
- mode. This function is only available on IA-32. After the 32-bit paging mode
- is disabled, control is transferred to the function specified by EntryPoint
- using the new stack specified by NewStack and passing in the parameters
- specified by Context1 and Context2. Context1 and Context2 are optional and
- may be NULL. The function EntryPoint must never return.
-
- There are a number of constraints that must be followed before calling this
- function:
- 1) Interrupts must be disabled.
- 2) The caller must be in 32-bit paged mode.
- 3) CR0, CR3, and CR4 must be compatible with 32-bit paged mode.
- 4) CR3 must point to valid page tables that guarantee that the pages for
- this function and the stack are identity mapped.
-
- @param EntryPoint A pointer to function to call with the new stack after
- paging is disabled.
- @param Context1 A pointer to the context to pass into the EntryPoint
- function as the first parameter after paging is disabled.
- @param Context2 A pointer to the context to pass into the EntryPoint
- function as the second parameter after paging is
- disabled.
- @param NewStack A pointer to the new stack to use for the EntryPoint
- function after paging is disabled.
-
-**/
-VOID
-EFIAPI
-InternalX86DisablePaging32 (
- IN SWITCH_STACK_ENTRY_POINT EntryPoint,
- IN VOID *Context1, OPTIONAL
- IN VOID *Context2, OPTIONAL
- IN VOID *NewStack
- )
-{
- //
- // This function cannot work on X64 platform
- //
- ASSERT (FALSE);
-}