mirror of https://github.com/acidanthera/audk.git
47 lines
1.5 KiB
ArmAsm
47 lines
1.5 KiB
ArmAsm
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#------------------------------------------------------------------------------
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#
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# Copyright (c) 2006 - 2010, Intel Corporation
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# All rights reserved. This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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# http://opensource.org/licenses/bsd-license.php
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#
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# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#
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# Module Name:
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#
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# PageFaultHandler.S
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#
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# Abstract:
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#
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# Defines page fault handler used to hook SMM IDT
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#
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#------------------------------------------------------------------------------
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ASM_GLOBAL ASM_PFX(PageFaultHandlerHook)
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ASM_PFX(PageFaultHandlerHook):
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pushq %rax # save all volatile registers
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pushq %rcx
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pushq %rdx
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pushq %r8
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pushq %r9
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pushq %r10
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pushq %r11
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addq $-0x20, %rsp
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call ASM_PFX(PageFaultHandler)
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addq $0x20, %rsp
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test %rax, %rax
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popq %r11
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popq %r10
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popq %r9
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popq %r8
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popq %rdx
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popq %rcx
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popq %rax # restore all volatile registers
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jnz L1
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jmp ASM_PFX(mOriginalHandler)
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L1:
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addq $0x08, %rsp # skip error code for PF
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iretq
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