ArmPlatformPkg/PrePeiCore/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 <Base.h>
  16 #include <AutoGen.h>
  17
  18 #start of the code section
  19 .text
  20 .align 5
  21
  22 # IMPORT
  23 GCC_ASM_IMPORT(PeiCommonExceptionEntry)
  24
  25 # EXPORT
  26 GCC_ASM_EXPORT(PeiVectorTable)
  27
  28 //============================================================
  29 //Default Exception Handlers
  30 //============================================================
  31
  32 //FIXME: One of the EDK2 tool is broken. It does not look to respect the alignment. Even, if we specify 32-byte alignment for this file.
  33 Dummy1: .word      0
  34 Dummy2: .word      0
  35
  36 ASM_PFX(PeiVectorTable):
  37   b _DefaultResetHandler
  38   b _DefaultUndefined
  39   b _DefaultSWI
  40   b _DefaultPrefetchAbort
  41   b _DefaultDataAbort
  42   b _DefaultReserved
  43   b _DefaultIrq
  44   b _DefaultFiq
  45
  46 //
  47 // Default Exception handlers: There is no plan to return from any of these exceptions.
  48 // No context saving at all.
  49 //
  50 _DefaultResetHandler:
  51   mov  r1, lr
  52   # Switch to SVC for common stack
  53   cps  #0x13
  54   mov  r0, #0
  55   blx  ASM_PFX(PeiCommonExceptionEntry)
  56
  57 _DefaultUndefined:
  58   sub  r1, LR, #4
  59   # Switch to SVC for common stack
  60   cps  #0x13
  61   mov  r0, #1
  62   blx  ASM_PFX(PeiCommonExceptionEntry)
  63
  64 _DefaultSWI:
  65   sub  r1, LR, #4
  66   # Switch to SVC for common stack
  67   cps  #0x13
  68   mov  r0, #2
  69   blx  ASM_PFX(PeiCommonExceptionEntry)
  70
  71 _DefaultPrefetchAbort:
  72   sub  r1, LR, #4
  73   # Switch to SVC for common stack
  74   cps  #0x13
  75   mov  r0, #3
  76   blx  ASM_PFX(PeiCommonExceptionEntry)
  77
  78 _DefaultDataAbort:
  79   sub  r1, LR, #8
  80   # Switch to SVC for common stack
  81   cps  #0x13
  82   mov  r0, #4
  83   blx  ASM_PFX(PeiCommonExceptionEntry)
  84
  85 _DefaultReserved:
  86   mov  r1, lr
  87   # Switch to SVC for common stack
  88   cps  #0x13
  89   mov  r0, #5
  90   blx  PeiCommonExceptionEntry
  91
  92 _DefaultIrq:
  93   sub  r1, LR, #4
  94   # Switch to SVC for common stack
  95   cps  #0x13
  96   mov  r0, #6
  97   blx  PeiCommonExceptionEntry
  98
  99 _DefaultFiq:
 100   sub  r1, LR, #4
 101   # Switch to SVC for common stack
 102   cps  #0x13
 103   mov  r0, #7
 104   blx  PeiCommonExceptionEntry
 105
 106 .end