mirror of https://github.com/acidanthera/audk.git
47 lines
1.5 KiB
ArmAsm
47 lines
1.5 KiB
ArmAsm
#------------------------------------------------------------------------------
|
|
#
|
|
# Copyright (c) 2006 - 2010, 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:
|
|
#
|
|
# PageFaultHandler.S
|
|
#
|
|
# Abstract:
|
|
#
|
|
# Defines page fault handler used to hook SMM IDT
|
|
#
|
|
#------------------------------------------------------------------------------
|
|
|
|
ASM_GLOBAL ASM_PFX(PageFaultHandlerHook)
|
|
ASM_PFX(PageFaultHandlerHook):
|
|
pushq %rax # save all volatile registers
|
|
pushq %rcx
|
|
pushq %rdx
|
|
pushq %r8
|
|
pushq %r9
|
|
pushq %r10
|
|
pushq %r11
|
|
addq $-0x20, %rsp
|
|
call ASM_PFX(PageFaultHandler)
|
|
addq $0x20, %rsp
|
|
test %rax, %rax
|
|
popq %r11
|
|
popq %r10
|
|
popq %r9
|
|
popq %r8
|
|
popq %rdx
|
|
popq %rcx
|
|
popq %rax # restore all volatile registers
|
|
jnz L1
|
|
jmpq *ASM_PFX(mOriginalHandler)
|
|
L1:
|
|
addq $0x08, %rsp # skip error code for PF
|
|
iretq
|