#------------------------------------------------------------------------------ | |
# | |
# 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: | |
# | |
# EnablePaging32.Asm | |
# | |
# Abstract: | |
# | |
# AsmEnablePaging32 function | |
# | |
# Notes: | |
# | |
#------------------------------------------------------------------------------ | |
#------------------------------------------------------------------------------ | |
# VOID | |
# EFIAPI | |
# AsmEnablePaging32 ( | |
# IN SWITCH_STACK_ENTRY_POINT EntryPoint, | |
# IN VOID *Context1, OPTIONAL | |
# IN VOID *Context2, OPTIONAL | |
# IN VOID *NewStack | |
# ); | |
#------------------------------------------------------------------------------ | |
.global _AsmEnablePaging32 | |
_AsmEnablePaging32: | |
movl 4(%esp),%ebx | |
movl 8(%esp),%ecx | |
movl 12(%esp),%edx | |
pushfl | |
popl %edi | |
cli | |
movl %cr0, %eax | |
btsl $31,%eax | |
movl 16(%esp),%esp | |
movl %eax, %cr0 | |
pushl %edi | |
popfl | |
pushl %edx | |
pushl %ecx | |
call *%ebx | |
jmp . | |