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/*
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* M68340/349 registers and stack dump if an exception is raised
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*
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* Author:
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* Pascal Cadic
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* France Telecom - CNET/DSM/TAM/CAT
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* 4, rue du Clos Courtel
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* 35512 CESSON-SEVIGNE
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* FRANCE
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*
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* COPYRIGHT (c) 1989-1999.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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*
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* http://www.OARcorp.com/rtems/license.html.
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*
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* $Id: dumpanic.c,v 1.2 2001-09-27 12:00:07 chris Exp $
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*/
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#include <stdio.h>
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const char *exceptionName[] =
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{
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"INITIAL STACK POINTER",
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"INITIAL PROGRAM COUNTER",
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"BUS ERROR",
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"ADDRESS ERROR",
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"ILLEGAL INSTRUCTION",
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"DIVISION BY ZERO",
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"CHK, CHK2",
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"TRAPcc, TRAPv",
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"PRIVILEGE VIOLATION",
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"TRACE",
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"LINE A EMULATOR",
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"LINE F EMULATOR",
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"HARDWARE BREAK",
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"COPROCESSOR PROTOCOL VIOLATION",
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"FORMAT ERROR",
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"UNINITIALIZED INTERRUPT",
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"RESERVED 16",
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"RESERVED 17",
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"RESERVED 18",
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"RESERVED 19",
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"RESERVED 20",
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"RESERVED 21",
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"RESERVED 22",
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"RESERVED 23",
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"SPURIOUS INTERRUPT",
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"LEVEL 1 AUTOVECTOR",
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"LEVEL 2 AUTOVECTOR",
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"LEVEL 3 AUTOVECTOR",
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"LEVEL 4 AUTOVECTOR",
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"LEVEL 5 AUTOVECTOR",
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"LEVEL 6 AUTOVECTOR",
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"LEVEL 7 AUTOVECTOR",
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"TRAP 1",
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"TRAP 2",
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"TRAP 3",
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"TRAP 4",
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"TRAP 5",
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"TRAP 6",
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"TRAP 7",
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"TRAP 8",
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"TRAP 9",
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"TRAP 10",
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"TRAP 11",
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"TRAP 12",
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"TRAP 13",
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"TRAP 14",
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"TRAP 15",
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"VECTOR 48",
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"VECTOR 49",
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"VECTOR 50",
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"VECTOR 51",
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"VECTOR 52",
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"VECTOR 53",
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"VECTOR 54",
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"VECTOR 55",
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"VECTOR 56",
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"VECTOR 57",
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"VECTOR 58",
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"VECTOR 59",
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"VECTOR 60",
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"VECTOR 61",
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"VECTOR 62",
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"VECTOR 63",
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};
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typedef struct {
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unsigned long pc;
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unsigned short sr;
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unsigned short format_id;
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unsigned long d0, d1, d2, d3, d4, d5, d6, d7;
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unsigned long a0, a1, a2, a3, a4, a5, a6, a7;
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unsigned long sfc, dfc, vbr;
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} boot_panic_registers_t;
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boot_panic_registers_t _boot_panic_registers;
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extern void RAW_FMT( int minor, const char* fmt, ... );
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extern char RAW_GETC(int minor);
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/******************************************************
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Name: _dbug_dump
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Input parameters: sr, pc, stack pointer,
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size to display
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Output parameters: -
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Description: display the supervisor stack
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*****************************************************/
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void _dbug_dump(unsigned short sr, void* pc, unsigned short *stack, int size)
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{
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int i;
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RAW_FMT(0,"%x : %x \t%x",0,sr,(unsigned short)(((unsigned)pc)>>16));
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for (i=2; i<size; i++) {
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if ((i%8)==0) RAW_FMT(0,"\n%x :",i/8);
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RAW_FMT(0," %x\t",stack[i-2]);
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}
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RAW_FMT(0,"\n");
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}
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/******************************************************
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Name: _dbug_dump
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Input parameters: -
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Output parameters: -
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Description: display microcontroler state. Registers
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values are stored in _boot_panic_registers
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which is filled in _uhoh ASM routine
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*****************************************************/
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void _dbug_dumpanic(void)
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{
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int c;
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void *faultedAddr, *pc;
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unsigned short vector, status;
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unsigned char frametype, *stack;
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#define ESCAPE 27
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stack = (unsigned char*)(_boot_panic_registers.a7);
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do {
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status = _boot_panic_registers.sr;
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pc = (void*)_boot_panic_registers.pc;
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faultedAddr = *(void**)(stack+4);
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vector = (_boot_panic_registers.format_id&0x0FFF)>>2;
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frametype = (_boot_panic_registers.format_id&0xF000)>>12;
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RAW_FMT(0,"\n---------------------------------------------\n");
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if (vector<64)
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RAW_FMT(0,"%s",exceptionName[vector]);
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else {
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RAW_FMT(0,"RESERVED USER");
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}
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RAW_FMT(0," exception (vector %x, type %x)\n",vector,frametype);
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RAW_FMT(0,"---------------------------------------------\n");
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RAW_FMT(0,"PC : 0x%x ",pc);
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RAW_FMT(0,"A7 : 0x%x ",_boot_panic_registers.a7);
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RAW_FMT(0,"SR : 0x%x\n",status);
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if (frametype==0x0c) {
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RAW_FMT(0,"\nfaulted address = 0x%x\n",faultedAddr);
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}
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RAW_FMT(0,"---------------------------------------------\n");
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RAW_FMT(0," panic regs\n");
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RAW_FMT(0,"---------------------------------------------\n");
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RAW_FMT(0,"D[0..3] : %x \t%x \t%x \t%x\n",
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_boot_panic_registers.d0,_boot_panic_registers.d1,
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_boot_panic_registers.d2,_boot_panic_registers.d3);
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RAW_FMT(0,"D[4..7] : %x \t%x \t%x \t%x\n",
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_boot_panic_registers.d4,_boot_panic_registers.d5,
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_boot_panic_registers.d6,_boot_panic_registers.d7);
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RAW_FMT(0,"A[0..3] : %x \t%x \t%x \t%x\n",
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_boot_panic_registers.a0,_boot_panic_registers.a1,
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_boot_panic_registers.a2,_boot_panic_registers.a3);
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RAW_FMT(0,"A[4..7] : %x \t%x \t%x \t%x\n",
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_boot_panic_registers.a4,_boot_panic_registers.a5,
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_boot_panic_registers.a6,_boot_panic_registers.a7);
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RAW_FMT(0," SFC : %x",_boot_panic_registers.sfc);
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RAW_FMT(0," DFC : %x\n",_boot_panic_registers.dfc);
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RAW_FMT(0," VBR : %x\n",_boot_panic_registers.vbr);
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RAW_FMT(0,"---------------------------------------------\n");
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RAW_FMT(0," panic stack\n");
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RAW_FMT(0,"---------------------------------------------\n");
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_dbug_dump(status, pc, (unsigned short*)stack,64*2);
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RAW_FMT(0,"---------------------------------------------\n");
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RAW_FMT(0,"press escape to reboot\n");
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} while ((c=RAW_GETC(0))!=ESCAPE); /* cgets ne marche pas si les IT sont bloquées */
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}
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