MdePkg/Library/BaseLib/Ia32/EnablePaging32.S File Reference
Detailed Description
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, 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:
#
# EnablePaging32.S
#
# Abstract:
#
# InternalX86EnablePaging32 function
#
# Notes:
#
#------------------------------------------------------------------------------
ASM_GLOBAL
ASM_PFX(InternalX86EnablePaging32)
#------------------------------------------------------------------------------
# VOID
# EFIAPI
# InternalX86EnablePaging32 (
# IN SWITCH_STACK_ENTRY_POINT EntryPoint,
# IN VOID *Context1, OPTIONAL
# IN VOID *Context2, OPTIONAL
# IN VOID *NewStack
# );
#------------------------------------------------------------------------------
ASM_PFX(InternalX86EnablePaging32):
movl 4(esp), ebx
movl 8(esp), ecx
movl 12(esp), edx
pushfl
pop edi # save flags in edi
cli
movl cr0, eax
btsl $31, eax
movl 16(esp), esp
movl eax, cr0
push edi
popfl # restore flags
push edx
push ecx
call *ebx
jmp .