[981b99f] | 1 | /* |
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| 2 | ************************************************************************** |
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| 3 | * |
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| 4 | * Component = |
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| 5 | * |
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| 6 | * Synopsis = rdbg/powerpc/excep_f.c |
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| 7 | * |
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| 8 | * $Id$ |
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| 9 | * |
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| 10 | ************************************************************************** |
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| 11 | */ |
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| 12 | |
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| 13 | #include <rtems.h> |
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| 14 | #include <rtems/error.h> |
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| 15 | #include <assert.h> |
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| 16 | #include <errno.h> |
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| 17 | #include <rdbg/rdbg.h> |
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| 18 | #include <rdbg/servrpc.h> |
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| 19 | |
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| 20 | int |
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| 21 | ExcepToSig (Exception_context *ctx) |
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| 22 | { |
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| 23 | int excep = getExcNum (ctx); |
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| 24 | |
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| 25 | switch (excep) { |
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| 26 | case ASM_FLOAT_VECTOR : return SIGFPE; |
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| 27 | |
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| 28 | case ASM_TRACE_VECTOR : |
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[1775dad] | 29 | case ASM_PROG_VECTOR : |
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[981b99f] | 30 | case ASM_SYS_VECTOR : return SIGTRAP; |
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| 31 | |
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| 32 | case ASM_ISI_VECTOR : return SIGSEGV; |
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| 33 | |
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| 34 | case ASM_RESET_VECTOR : |
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| 35 | case ASM_MACH_VECTOR : |
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| 36 | case ASM_EXT_VECTOR : |
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| 37 | case ASM_ALIGN_VECTOR : return SIGILL; |
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| 38 | |
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| 39 | default: |
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| 40 | break; |
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| 41 | } |
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| 42 | return SIGKILL; |
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| 43 | } |
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| 44 | |
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| 45 | |
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| 46 | /*----- Breakpoint Exception management -----*/ |
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| 47 | |
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| 48 | /* |
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| 49 | * Handler for Breakpoint Exceptions : |
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| 50 | * software breakpoints. |
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| 51 | */ |
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| 52 | |
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| 53 | void |
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| 54 | BreakPointExcHdl(CPU_Exception_frame *ctx) |
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| 55 | { |
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| 56 | rtems_status_code status; |
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| 57 | rtems_id continueSemId; |
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| 58 | |
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| 59 | if ( (justSaveContext) && (ctx->_EXC_number == ASM_SYS_VECTOR) ) { |
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| 60 | PushSavedExceptCtx (_Thread_Executing->Object.id, ctx); |
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| 61 | justSaveContext = 0; |
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| 62 | } |
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| 63 | else { |
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| 64 | if (ctx->_EXC_number != ASM_TRACE_VECTOR){ |
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| 65 | NbSerializedCtx++; |
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| 66 | rtems_semaphore_obtain(serializeSemId, RTEMS_WAIT, RTEMS_NO_TIMEOUT); |
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| 67 | NbSerializedCtx--; |
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| 68 | } |
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| 69 | |
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| 70 | currentTargetThread = _Thread_Executing->Object.id; |
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| 71 | |
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| 72 | #ifdef DDEBUG |
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| 73 | printk("----------------------------------------------------------\n"); |
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| 74 | printk("Exception %d caught at PC %x by thread %d\n", |
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| 75 | ctx->_EXC_number, |
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| 76 | ctx->EXC_SRR0, |
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| 77 | _Thread_Executing->Object.id); |
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| 78 | printk("----------------------------------------------------------\n"); |
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| 79 | printk("Processor execution context at time of the fault was :\n"); |
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| 80 | printk("----------------------------------------------------------\n"); |
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| 81 | printk("\t R0 = %x\n", ctx->GPR0); |
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| 82 | printk("\t R1 = %x\n", ctx->GPR1); |
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| 83 | printk("\t R2 = %x\n", ctx->GPR2); |
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| 84 | printk("\t R3 = %x\n", ctx->GPR3); |
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| 85 | printk("\t R4 = %x\n", ctx->GPR4); |
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| 86 | printk("\t R5 = %x\n", ctx->GPR5); |
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| 87 | printk("\t R6 = %x\n", ctx->GPR6); |
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| 88 | printk("\t R7 = %x\n", ctx->GPR7); |
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| 89 | printk("\t R8 = %x\n", ctx->GPR8); |
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| 90 | printk("\t R9 = %x\n", ctx->GPR9); |
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| 91 | printk("\t R10 = %x\n", ctx->GPR10); |
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| 92 | printk("\t R11 = %x\n", ctx->GPR11); |
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| 93 | printk("\t R12 = %x\n", ctx->GPR12); |
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| 94 | printk("\t R13 = %x\n", ctx->GPR13); |
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| 95 | printk("\t R14 = %x\n", ctx->GPR14); |
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| 96 | printk("\t R15 = %x\n", ctx->GPR15); |
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| 97 | printk("\t R16 = %x\n", ctx->GPR16); |
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| 98 | printk("\t R17 = %x\n", ctx->GPR17); |
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| 99 | printk("\t R18 = %x\n", ctx->GPR18); |
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| 100 | printk("\t R19 = %x\n", ctx->GPR19); |
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| 101 | printk("\t R20 = %x\n", ctx->GPR20); |
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| 102 | printk("\t R21 = %x\n", ctx->GPR21); |
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| 103 | printk("\t R22 = %x\n", ctx->GPR22); |
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| 104 | printk("\t R23 = %x\n", ctx->GPR23); |
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| 105 | printk("\t R24 = %x\n", ctx->GPR24); |
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| 106 | printk("\t R25 = %x\n", ctx->GPR25); |
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| 107 | printk("\t R26 = %x\n", ctx->GPR26); |
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| 108 | printk("\t R27 = %x\n", ctx->GPR27); |
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| 109 | printk("\t R28 = %x\n", ctx->GPR28); |
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| 110 | printk("\t R29 = %x\n", ctx->GPR29); |
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| 111 | printk("\t R30 = %x\n", ctx->GPR30); |
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| 112 | printk("\t R31 = %x\n", ctx->GPR31); |
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| 113 | printk("\t CR = %x\n", ctx->EXC_CR); |
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| 114 | printk("\t CTR = %x\n", ctx->EXC_CTR); |
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| 115 | printk("\t XER = %x\n", ctx->EXC_XER); |
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| 116 | printk("\t LR = %x\n", ctx->EXC_LR); |
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| 117 | printk("\t MSR = %x\n", ctx->EXC_MSR); |
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| 118 | #endif |
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| 119 | |
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| 120 | status = rtems_semaphore_create (rtems_build_name('D', 'B', 'G', 'c'), |
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| 121 | 0, |
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| 122 | RTEMS_FIFO | |
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| 123 | RTEMS_COUNTING_SEMAPHORE | |
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| 124 | RTEMS_NO_INHERIT_PRIORITY | |
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| 125 | RTEMS_NO_PRIORITY_CEILING | |
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| 126 | RTEMS_LOCAL, |
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| 127 | 0, |
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| 128 | &continueSemId); |
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| 129 | if (status != RTEMS_SUCCESSFUL) |
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| 130 | rtems_panic ("Can't create continue semaphore: `%s'\n",rtems_status_text(status)); |
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| 131 | |
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| 132 | PushExceptCtx (_Thread_Executing->Object.id, continueSemId, ctx); |
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| 133 | |
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| 134 | switch (ctx->_EXC_number){ |
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| 135 | case ASM_TRACE_VECTOR : |
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| 136 | DPRINTF((" TRACE EXCEPTION !!!\n")); |
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| 137 | ctx->EXC_SRR1 &= ~MSR_SE; |
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| 138 | ExitForSingleStep-- ; |
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| 139 | rtems_semaphore_release( wakeupEventSemId ); |
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| 140 | break; |
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| 141 | |
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| 142 | case ASM_PROG_VECTOR : |
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| 143 | DPRINTF((" BREAKPOINT EXCEPTION !!!\n")); |
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| 144 | rtems_semaphore_release( wakeupEventSemId ); |
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| 145 | break; |
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| 146 | |
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| 147 | case ASM_SYS_VECTOR : |
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| 148 | DPRINTF((" ENTER RDBG !!!\n")); |
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| 149 | rtems_semaphore_release( wakeupEventSemId ); |
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| 150 | break; |
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| 151 | |
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| 152 | default: |
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| 153 | DPRINTF((" OTHER EXCEPTION !!!\n")); |
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| 154 | rtems_semaphore_release( wakeupEventSemId ); |
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| 155 | break; |
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| 156 | } |
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| 157 | |
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| 158 | rtems_semaphore_obtain(continueSemId, RTEMS_WAIT, RTEMS_NO_TIMEOUT); |
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| 159 | |
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| 160 | PopExceptCtx (_Thread_Executing->Object.id); |
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| 161 | rtems_semaphore_delete(continueSemId); |
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| 162 | } |
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| 163 | |
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| 164 | } |
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| 165 | |
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| 166 | |
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| 167 | |
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