ArmPlatformPkg/PrePeiCore/Arm/Exception.asm

   1 //
   2 //  Copyright (c) 2011, ARM Limited. All rights reserved.
   3 //
   4 //  SPDX-License-Identifier: BSD-2-Clause-Patent
   5 //
   6 //
   7
   8 #include <AutoGen.h>
   9
  10   IMPORT  PeiCommonExceptionEntry
  11   EXPORT  PeiVectorTable
  12
  13   PRESERVE8
  14   AREA    PrePeiCoreException, CODE, READONLY, CODEALIGN, ALIGN=5
  15
  16 //============================================================
  17 //Default Exception Handlers
  18 //============================================================
  19
  20
  21 PeiVectorTable
  22   b _DefaultResetHandler
  23   b _DefaultUndefined
  24   b _DefaultSWI
  25   b _DefaultPrefetchAbort
  26   b _DefaultDataAbort
  27   b _DefaultReserved
  28   b _DefaultIrq
  29   b _DefaultFiq
  30
  31 //
  32 // Default Exception handlers: There is no plan to return from any of these exceptions.
  33 // No context saving at all.
  34 //
  35 _DefaultResetHandler
  36    mov  r1, lr
  37    cps       #0x13                     ; Switch to SVC for common stack
  38    mov  r0, #0
  39    blx   PeiCommonExceptionEntry
  40
  41 _DefaultUndefined
  42    sub  r1, LR, #4
  43    cps       #0x13                     ; Switch to SVC for common stack
  44    mov  r0, #1
  45    blx   PeiCommonExceptionEntry
  46
  47 _DefaultSWI
  48    sub  r1, LR, #4
  49    cps       #0x13                     ; Switch to SVC for common stack
  50    mov  r0, #2
  51    blx   PeiCommonExceptionEntry
  52
  53 _DefaultPrefetchAbort
  54    sub  r1, LR, #4
  55    cps       #0x13                     ; Switch to SVC for common stack
  56    mov  r0, #3
  57    blx   PeiCommonExceptionEntry
  58
  59 _DefaultDataAbort
  60    sub  r1, LR, #8
  61    cps       #0x13                     ; Switch to SVC for common stack
  62    mov  r0, #4
  63    blx   PeiCommonExceptionEntry
  64
  65 _DefaultReserved
  66    mov  r1, lr
  67    cps       #0x13                     ; Switch to SVC for common stack
  68    mov  r0, #5
  69    blx   PeiCommonExceptionEntry
  70
  71 _DefaultIrq
  72    sub  r1, LR, #4
  73    cps       #0x13                     ; Switch to SVC for common stack
  74    mov  r0, #6
  75    blx   PeiCommonExceptionEntry
  76
  77 _DefaultFiq
  78    sub  r1, LR, #4
  79    cps       #0x13                     ; Switch to SVC for common stack
  80    mov  r0, #7
  81    blx   PeiCommonExceptionEntry
  82
  83   END