/* $OpenBSD: db_trap.c,v 1.11 2006/03/13 06:23:20 jsg Exp $ */ /* $NetBSD: db_trap.c,v 1.9 1996/02/05 01:57:18 christos Exp $ */ /* * Mach Operating System * Copyright (c) 1993,1992,1991,1990 Carnegie Mellon University * All Rights Reserved. * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie Mellon * the rights to redistribute these changes. * * Author: David B. Golub, Carnegie Mellon University * Date: 7/90 */ /* * Trap entry point to kernel debugger. */ #include <sys/param.h> #include <sys/proc.h> #include <sys/systm.h> #include <uvm/uvm_extern.h> #include <machine/db_machdep.h> #include <ddb/db_run.h> #include <ddb/db_command.h> #include <ddb/db_break.h> #include <ddb/db_output.h> #include <ddb/db_sym.h> #include <ddb/db_extern.h> void db_trap(int type, int code) { boolean_t bkpt; boolean_t watchpt; bkpt = IS_BREAKPOINT_TRAP(type, code); watchpt = IS_WATCHPOINT_TRAP(type, code); if (db_stop_at_pc(DDB_REGS, &bkpt)) { if (db_inst_count) { db_printf("After %d instructions ", db_inst_count); db_printf("(%d loads, %d stores),\n", db_load_count, db_store_count); } if (bkpt) db_printf("Breakpoint at\t"); else if (watchpt) db_printf("Watchpoint at\t"); else db_printf("Stopped at\t"); db_dot = PC_REGS(DDB_REGS); db_print_loc_and_inst(db_dot); if (panicstr != NULL) { if (db_print_position() != 0) db_printf("\n"); db_printf("RUN AT LEAST 'trace' AND 'ps' AND INCLUDE " "OUTPUT WHEN REPORTING THIS PANIC!\n"); db_printf("DO NOT EVEN BOTHER REPORTING THIS WITHOUT " "INCLUDING THAT INFORMATION!\n"); } db_command_loop(); } db_restart_at_pc(DDB_REGS, watchpt); }