reactos/ntoskrnl/ke/arm/trap.s

   1 /*
   2  * PROJECT:         ReactOS Kernel
   3  * LICENSE:         BSD - See COPYING.ARM in the top level directory
   4  * FILE:            ntoskrnl/ke/arm/trap.s
   5  * PURPOSE:         Support for exceptions and interrupts on ARM machines
   6  * PROGRAMMERS:     ReactOS Portable Systems Group
   7  */
   8
   9     .title "ARM Trap Dispatching and Handling"
  10     #include "ntoskrnl/include/internal/arm/kxarm.h"
  11     .include "ntoskrnl/include/internal/arm/ksarm.h"
  12
  13     .global KiArmVectorTable
  14     KiArmVectorTable:
  15         b .                                     // Reset
  16         ldr pc, _KiUndefinedInstructionJump     // Undefined Instruction
  17         ldr pc, _KiSoftwareInterruptJump        // Software Interrupt
  18         ldr pc, _KiPrefetchAbortJump            // Prefetch Abort
  19         ldr pc, _KiDataAbortJump                // Data Abort
  20         ldr pc, _KiReservedJump                 // Reserved
  21         ldr pc, _KiInterruptJump                // Interrupt
  22         ldr pc, _KiFastInterruptJump            // Fast Interrupt
  23
  24     _KiUndefinedInstructionJump:    .word KiUndefinedInstructionException
  25     _KiSoftwareInterruptJump:       .word KiSoftwareInterruptException
  26     _KiPrefetchAbortJump:           .word KiPrefetchAbortException
  27     _KiDataAbortJump:               .word KiDataAbortException
  28     _KiReservedJump:                .word KiReservedException
  29     _KiInterruptJump:               .word KiInterruptException
  30     _KiFastInterruptJump:           .word KiFastInterruptException
  31
  32     TEXTAREA
  33     NESTED_ENTRY KiUndefinedInstructionException
  34     PROLOG_END KiUndefinedInstructionException
  35
  36     //
  37     // FIXME: TODO
  38     //
  39     b .
  40
  41     ENTRY_END KiUndefinedInstructionException
  42
  43     NESTED_ENTRY KiSoftwareInterruptException
  44     PROLOG_END KiSoftwareInterruptException
  45
  46     //
  47     // Handle trap entry
  48     //
  49     SYSCALL_PROLOG
  50
  51     //
  52     // Call the C handler
  53     //
  54     adr lr, 1f
  55     mov r0, sp
  56     ldr pc, =KiSoftwareInterruptHandler
  57
  58 1:
  59     //
  60     // Handle trap exit
  61     //
  62     TRAP_EPILOG 1 // FromSystemCall
  63
  64     ENTRY_END KiSoftwareInterruptException
  65
  66     NESTED_ENTRY KiPrefetchAbortException
  67     PROLOG_END KiPrefetchAbortException
  68
  69     //
  70     // FIXME: TODO
  71     //
  72     b .
  73
  74     ENTRY_END KiPrefetchAbortException
  75
  76     NESTED_ENTRY KiDataAbortException
  77     PROLOG_END KiDataAbortException
  78
  79     //
  80     // Handle trap entry
  81     //
  82     TRAP_PROLOG 1 // FromAbort
  83
  84     //
  85     // Call the C handler
  86     //
  87     adr lr, 1f
  88     mov r0, sp
  89     ldr pc, =KiDataAbortHandler
  90
  91 1:
  92     //
  93     // Handle trap exit
  94     //
  95     TRAP_EPILOG 0 // NotFromSystemCall
  96
  97     ENTRY_END KiDataAbortException
  98
  99     NESTED_ENTRY KiInterruptException
 100     PROLOG_END KiInterruptException
 101
 102     //
 103     // Handle trap entry
 104     //
 105     TRAP_PROLOG 0 // NotFromAbort
 106
 107     //
 108     // Call the C handler
 109     //
 110     adr lr, 1f
 111     mov r0, sp
 112     mov r1, #0
 113     ldr pc, =KiInterruptHandler
 114
 115 1:
 116     //
 117     // Handle trap exit
 118     //
 119     TRAP_EPILOG 0 // NotFromSystemCall
 120
 121     ENTRY_END KiInterruptException
 122
 123     NESTED_ENTRY KiFastInterruptException
 124     PROLOG_END KiFastInterruptException
 125
 126     //
 127     // FIXME: TODO
 128     //
 129     b .
 130
 131     ENTRY_END KiFastInterruptException
 132
 133
 134     NESTED_ENTRY KiReservedException
 135     PROLOG_END KiReservedException
 136
 137     //
 138     // FIXME: TODO
 139     //
 140     b .
 141
 142     ENTRY_END KiReservedException