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; Copyright (c) 2004, 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:
;
; DisablePaging32.Asm
;
; Abstract:
;
; AsmDisablePaging32 function
;
; Notes:
;
;------------------------------------------------------------------------------
.386
.model flat,C
.code
;------------------------------------------------------------------------------
; VOID
; EFIAPI
; InternalX86DisablePaging32 (
; IN SWITCH_STACK_ENTRY_POINT EntryPoint,
; IN VOID *Context1, OPTIONAL
; IN VOID *Context2, OPTIONAL
; IN VOID *NewStack
; );
;------------------------------------------------------------------------------
InternalX86DisablePaging32 PROC
mov ebx, [esp + 4]
mov ecx, [esp + 8]
mov edx, [esp + 12]
pushfd
pop edi ; save EFLAGS to edi
cli
mov eax, cr0
btr eax, 31
mov esp, [esp + 16]
mov cr0, eax
push edi
popfd ; restore EFLAGS from edi
push edx
push ecx
call ebx
jmp $ ; EntryPoint() should not return
InternalX86DisablePaging32 ENDP
END
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