ArmPlatformPkg/PrePeiCore/Arm/Exception.asm

   1 //
   2 //  Copyright (c) 2011, ARM Limited. All rights reserved.
   3 //
   4 //  This program and the accompanying materials
   5 //  are licensed and made available under the terms and conditions of the BSD License
   6 //  which accompanies this distribution.  The full text of the license may be found at
   7 //  http://opensource.org/licenses/bsd-license.php
   8 //
   9 //  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 //  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11 //
  12 //
  13
  14 #include <AutoGen.h>
  15
  16   IMPORT  PeiCommonExceptionEntry
  17   EXPORT  PeiVectorTable
  18
  19   PRESERVE8
  20   AREA    PrePeiCoreException, CODE, READONLY, CODEALIGN, ALIGN=5
  21
  22 //============================================================
  23 //Default Exception Handlers
  24 //============================================================
  25
  26
  27 PeiVectorTable
  28   b _DefaultResetHandler
  29   b _DefaultUndefined
  30   b _DefaultSWI
  31   b _DefaultPrefetchAbort
  32   b _DefaultDataAbort
  33   b _DefaultReserved
  34   b _DefaultIrq
  35   b _DefaultFiq
  36
  37 //
  38 // Default Exception handlers: There is no plan to return from any of these exceptions.
  39 // No context saving at all.
  40 //
  41 _DefaultResetHandler
  42    mov  r1, lr
  43    cps       #0x13                     ; Switch to SVC for common stack
  44    mov  r0, #0
  45    blx   PeiCommonExceptionEntry
  46
  47 _DefaultUndefined
  48    sub  r1, LR, #4
  49    cps       #0x13                     ; Switch to SVC for common stack
  50    mov  r0, #1
  51    blx   PeiCommonExceptionEntry
  52
  53 _DefaultSWI
  54    sub  r1, LR, #4
  55    cps       #0x13                     ; Switch to SVC for common stack
  56    mov  r0, #2
  57    blx   PeiCommonExceptionEntry
  58
  59 _DefaultPrefetchAbort
  60    sub  r1, LR, #4
  61    cps       #0x13                     ; Switch to SVC for common stack
  62    mov  r0, #3
  63    blx   PeiCommonExceptionEntry
  64
  65 _DefaultDataAbort
  66    sub  r1, LR, #8
  67    cps       #0x13                     ; Switch to SVC for common stack
  68    mov  r0, #4
  69    blx   PeiCommonExceptionEntry
  70
  71 _DefaultReserved
  72    mov  r1, lr
  73    cps       #0x13                     ; Switch to SVC for common stack
  74    mov  r0, #5
  75    blx   PeiCommonExceptionEntry
  76
  77 _DefaultIrq
  78    sub  r1, LR, #4
  79    cps       #0x13                     ; Switch to SVC for common stack
  80    mov  r0, #6
  81    blx   PeiCommonExceptionEntry
  82
  83 _DefaultFiq
  84    sub  r1, LR, #4
  85    cps       #0x13                     ; Switch to SVC for common stack
  86    mov  r0, #7
  87    blx   PeiCommonExceptionEntry
  88
  89   END