This module should handle the Pre PI phase before the DXE core is executed when there is no PEI Core support. It declares the required information needed by the DXE core through HOBs. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11949 6f19259b-4bc3-4df7-8a09-765794883524
92 lines
2.6 KiB
NASM
92 lines
2.6 KiB
NASM
//
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// Copyright (c) 2011, ARM Limited. All rights reserved.
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//
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// 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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//
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#include <AsmMacroIoLib.h>
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#include <Base.h>
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#include <AutoGen.h>
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IMPORT PrePiCommonExceptionEntry
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EXPORT PrePiVectorTable
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PRESERVE8
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AREA PrePeiCoreException, CODE, READONLY, CODEALIGN, ALIGN=5
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//============================================================
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//Default Exception Handlers
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//============================================================
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//TODO: there should be better way to handle the exceptions during the early stage. At the moment they are spinning in infinite loop
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PrePiVectorTable
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b _DefaultResetHandler
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b _DefaultUndefined
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b _DefaultSWI
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b _DefaultPrefetchAbort
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b _DefaultDataAbort
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b _DefaultReserved
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b _DefaultIrq
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b _DefaultFiq
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//
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// Default Exception handlers: There is no plan to return from any of these exceptions.
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// No context saving at all.
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//
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_DefaultResetHandler
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mov r1, lr
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cps #0x13 ; Switch to SVC for common stack
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mov r0, #0
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blx PrePiCommonExceptionEntry
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_DefaultUndefined
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sub r1, LR, #4
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cps #0x13 ; Switch to SVC for common stack
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mov r0, #1
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blx PrePiCommonExceptionEntry
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_DefaultSWI
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sub r1, LR, #4
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cps #0x13 ; Switch to SVC for common stack
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mov r0, #2
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blx PrePiCommonExceptionEntry
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_DefaultPrefetchAbort
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sub r1, LR, #4
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cps #0x13 ; Switch to SVC for common stack
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mov r0, #3
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blx PrePiCommonExceptionEntry
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_DefaultDataAbort
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sub r1, LR, #8
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cps #0x13 ; Switch to SVC for common stack
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mov r0, #4
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blx PrePiCommonExceptionEntry
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_DefaultReserved
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mov r1, lr
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cps #0x13 ; Switch to SVC for common stack
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mov r0, #5
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blx PrePiCommonExceptionEntry
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_DefaultIrq
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sub r1, LR, #4
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cps #0x13 ; Switch to SVC for common stack
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mov r0, #6
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blx PrePiCommonExceptionEntry
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_DefaultFiq
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sub r1, LR, #4
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cps #0x13 ; Switch to SVC for common stack
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mov r0, #7
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blx PrePiCommonExceptionEntry
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END
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