You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
53 lines
1.7 KiB
53 lines
1.7 KiB
4 years ago
|
#------------------------------------------------------------------------------
|
||
|
|
#
|
||
|
|
# Copyright (c) 2006 - 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:
|
||
|
|
#
|
||
|
|
# DisablePaging32.S
|
||
|
|
#
|
||
|
|
# Abstract:
|
||
|
|
#
|
||
|
|
# InternalX86DisablePaging32 function
|
||
|
|
#
|
||
|
|
# Notes:
|
||
|
|
#
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
|
||
|
|
ASM_GLOBAL ASM_PFX(InternalX86DisablePaging32)
|
||
|
|
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
# VOID
|
||
|
|
# EFIAPI
|
||
|
|
# InternalX86DisablePaging32 (
|
||
|
|
# IN SWITCH_STACK_ENTRY_POINT EntryPoint,
|
||
|
|
# IN VOID *Context1, OPTIONAL
|
||
|
|
# IN VOID *Context2, OPTIONAL
|
||
|
|
# IN VOID *NewStack
|
||
|
|
# );
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
ASM_PFX(InternalX86DisablePaging32):
|
||
|
|
movl 4(%esp), %ebx
|
||
|
|
movl 8(%esp), %ecx
|
||
|
|
movl 12(%esp), %edx
|
||
|
|
pushfl
|
||
|
|
pop %edi # save EFLAGS to edi
|
||
|
|
cli
|
||
|
|
movl %cr0, %eax
|
||
|
|
btrl $31, %eax
|
||
|
|
movl 16(%esp), %esp
|
||
|
|
movl %eax, %cr0
|
||
|
|
push %edi
|
||
|
|
popfl # restore EFLAGS from edi
|
||
|
|
push %edx
|
||
|
|
push %ecx
|
||
|
|
call *%ebx
|
||
|
|
jmp . # EntryPoint() should not return
|