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File: [cvs.NetBSD.org] / src / sys / ddb / db_trap.c (download)

Revision 1.14, Mon Apr 12 20:38:21 1999 UTC (21 years, 6 months ago) by pk
Branch: MAIN
CVS Tags: wrstuden-devbsize-base, wrstuden-devbsize-19991221, wrstuden-devbsize, netbsd-1-5-base, netbsd-1-5-RELEASE, netbsd-1-5-PATCH003, netbsd-1-5-PATCH002, netbsd-1-5-PATCH001, netbsd-1-5-BETA2, netbsd-1-5-BETA, netbsd-1-5-ALPHA2, netbsd-1-5, minoura-xpg4dl-base, minoura-xpg4dl, fvdl-softdep-base, fvdl-softdep, comdex-fall-1999-base, comdex-fall-1999, chs-ubc2-newbase, chs-ubc2-base
Branch point for: thorpej_scsipi
Changes since 1.13: +2 -2 lines

Quote "AS IS" as in the majority of Carnegy Mellon notices.

/*	$NetBSD: db_trap.c,v 1.14 1999/04/12 20:38:21 pk Exp $	*/

/* 
 * Mach Operating System
 * Copyright (c) 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 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 <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(type, code)
	int	type, 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 (%d loads, %d stores),\n",
			  db_inst_count, db_load_count, db_store_count);
	    }
	    if (curproc != NULL) {
		if (bkpt)
		    db_printf("Breakpoint in %s at\t", curproc->p_comm);
		else if (watchpt)
		    db_printf("Watchpoint in %s at\t", curproc->p_comm);
		else
		    db_printf("Stopped in %s at\t", curproc->p_comm);
	    } else 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);

	    db_command_loop();
	}

	db_restart_at_pc(DDB_REGS, watchpt);
}