ArmPlatformPkg/PrePeiCore/Arm/Exception.S

   1 //
   2 //  Copyright (c) 2011, ARM Limited. All rights reserved.
   3 //
   4 # SPDX-License-Identifier: BSD-2-Clause-Patent
   5 #
   6 #
   7
   8 #include <AsmMacroIoLib.h>
   9 #include <Base.h>
  10 #include <AutoGen.h>
  11
  12 #start of the code section
  13 .text
  14 .align 5
  15
  16 # IMPORT
  17 GCC_ASM_IMPORT(PeiCommonExceptionEntry)
  18
  19 # EXPORT
  20 GCC_ASM_EXPORT(PeiVectorTable)
  21
  22 //============================================================
  23 //Default Exception Handlers
  24 //============================================================
  25
  26
  27 ASM_PFX(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   # Switch to SVC for common stack
  44   cps  #0x13
  45   mov  r0, #0
  46   blx  ASM_PFX(PeiCommonExceptionEntry)
  47
  48 _DefaultUndefined:
  49   sub  r1, LR, #4
  50   # Switch to SVC for common stack
  51   cps  #0x13
  52   mov  r0, #1
  53   blx  ASM_PFX(PeiCommonExceptionEntry)
  54
  55 _DefaultSWI:
  56   sub  r1, LR, #4
  57   # Switch to SVC for common stack
  58   cps  #0x13
  59   mov  r0, #2
  60   blx  ASM_PFX(PeiCommonExceptionEntry)
  61
  62 _DefaultPrefetchAbort:
  63   sub  r1, LR, #4
  64   # Switch to SVC for common stack
  65   cps  #0x13
  66   mov  r0, #3
  67   blx  ASM_PFX(PeiCommonExceptionEntry)
  68
  69 _DefaultDataAbort:
  70   sub  r1, LR, #8
  71   # Switch to SVC for common stack
  72   cps  #0x13
  73   mov  r0, #4
  74   blx  ASM_PFX(PeiCommonExceptionEntry)
  75
  76 _DefaultReserved:
  77   mov  r1, lr
  78   # Switch to SVC for common stack
  79   cps  #0x13
  80   mov  r0, #5
  81   blx  ASM_PFX(PeiCommonExceptionEntry)
  82
  83 _DefaultIrq:
  84   sub  r1, LR, #4
  85   # Switch to SVC for common stack
  86   cps  #0x13
  87   mov  r0, #6
  88   blx  ASM_PFX(PeiCommonExceptionEntry)
  89
  90 _DefaultFiq:
  91   sub  r1, LR, #4
  92   # Switch to SVC for common stack
  93   cps  #0x13
  94   mov  r0, #7
  95   blx  ASM_PFX(PeiCommonExceptionEntry)
  96