ArmPlatformPkg/PrePeiCore/AArch64/Exception.S

   1 #
   2 #  Copyright (c) 2011-2014, 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 <AsmMacroIoLibV8.h>
  15 #include <Base.h>
  16 #include <AutoGen.h>
  17
  18 .text
  19 .align 11
  20
  21 GCC_ASM_EXPORT(PeiVectorTable)
  22
  23 //============================================================
  24 //Default Exception Handlers
  25 //============================================================
  26
  27 ASM_PFX(PeiVectorTable):
  28
  29
  30 #define TO_HANDLER                                              \
  31    EL1_OR_EL2(x1)                                               \
  32 1: mrs  x1, elr_el1    /* EL1 Exception Link Register */       ;\
  33    b    3f                                                     ;\
  34 2: mrs  x1, elr_el2    /* EL2 Exception Link Register */       ;\
  35 3: bl   ASM_PFX(PeiCommonExceptionEntry)                       ;
  36
  37
  38 //
  39 // Default Exception handlers: There is no plan to return from any of these exceptions.
  40 // No context saving at all.
  41 //
  42
  43 .align 7
  44 _DefaultSyncExceptHandler_t:
  45   mov  x0, #EXCEPT_AARCH64_SYNCHRONOUS_EXCEPTIONS
  46   TO_HANDLER
  47
  48 .align 7
  49 _DefaultIrq_t:
  50   mov  x0, #EXCEPT_AARCH64_IRQ
  51   TO_HANDLER
  52
  53 .align 7
  54 _DefaultFiq_t:
  55   mov  x0, #EXCEPT_AARCH64_FIQ
  56   TO_HANDLER
  57
  58 .align 7
  59 _DefaultSError_t:
  60   mov  x0, #EXCEPT_AARCH64_SERROR
  61   TO_HANDLER
  62
  63 .align 7
  64 _DefaultSyncExceptHandler_h:
  65   mov  x0, #EXCEPT_AARCH64_SYNCHRONOUS_EXCEPTIONS
  66   TO_HANDLER
  67
  68 .align 7
  69 _DefaultIrq_h:
  70   mov  x0, #EXCEPT_AARCH64_IRQ
  71   TO_HANDLER
  72
  73 .align 7
  74 _DefaultFiq_h:
  75   mov  x0, #EXCEPT_AARCH64_FIQ
  76   TO_HANDLER
  77
  78 .align 7
  79 _DefaultSError_h:
  80   mov  x0, #EXCEPT_AARCH64_SERROR
  81   TO_HANDLER