ArmPlatformPkg/Sec/Exception.S

   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 <AsmMacroIoLib.h>
  15 #include <AutoGen.h>
  16 #include "SecInternal.h"
  17
  18 .text
  19 .align 5
  20
  21 GCC_ASM_IMPORT(SecCommonExceptionEntry)
  22 GCC_ASM_EXPORT(SecVectorTable)
  23
  24 //============================================================
  25 // Default Exception Handlers
  26 //============================================================
  27
  28
  29 ASM_PFX(SecVectorTable):
  30   b _DefaultResetHandler
  31   b _DefaultUndefined
  32   b _DefaultSWI
  33   b _DefaultPrefetchAbort
  34   b _DefaultDataAbort
  35   b _DefaultReserved
  36   b _DefaultIrq
  37   b _DefaultFiq
  38
  39 //
  40 // Default Exception handlers: There is no plan to return from any of these exceptions.
  41 // No context saving at all.
  42 //
  43 _DefaultResetHandler:
  44   mov  r1, lr
  45   # Switch to SVC for common stack
  46   cps  #0x13
  47   mov  r0, #0
  48   blx  ASM_PFX(SecCommonExceptionEntry)
  49
  50 _DefaultUndefined:
  51   sub  r1, LR, #4
  52   # Switch to SVC for common stack
  53   cps  #0x13
  54   mov  r0, #1
  55   blx  ASM_PFX(SecCommonExceptionEntry)
  56
  57 _DefaultSWI:
  58   sub  r1, LR, #4
  59   # Switch to SVC for common stack
  60   cps  #0x13
  61   mov  r0, #2
  62   blx  ASM_PFX(SecCommonExceptionEntry)
  63
  64 _DefaultPrefetchAbort:
  65   sub  r1, LR, #4
  66   # Switch to SVC for common stack
  67   cps  #0x13
  68   mov  r0, #3
  69   blx  ASM_PFX(SecCommonExceptionEntry)
  70
  71 _DefaultDataAbort:
  72   sub  r1, LR, #8
  73   # Switch to SVC for common stack
  74   cps  #0x13
  75   mov  r0, #4
  76   blx  ASM_PFX(SecCommonExceptionEntry)
  77
  78 _DefaultReserved:
  79   mov  r1, lr
  80   # Switch to SVC for common stack
  81   cps  #0x13
  82   mov  r0, #5
  83   blx  ASM_PFX(SecCommonExceptionEntry)
  84
  85 _DefaultIrq:
  86   sub  r1, LR, #4
  87   # Switch to SVC for common stack
  88   cps  #0x13
  89   mov  r0, #6
  90   blx  ASM_PFX(SecCommonExceptionEntry)
  91
  92 _DefaultFiq:
  93   sub  r1, LR, #4
  94   # Switch to SVC for common stack
  95   cps  #0x13
  96   mov  r0, #7
  97   blx  ASM_PFX(SecCommonExceptionEntry)
  98