/* * 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 * 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. */ /* * $Id: db_trap.c,v 1.2 1993/05/20 03:39:34 cgd Exp $ * * HISTORY * $Log: db_trap.c,v $ * Revision 1.2 1993/05/20 03:39:34 cgd * add explicit rcs id * * Revision 1.1.1.1 1993/03/21 09:46:27 cgd * initial import of 386bsd-0.1 sources * * Revision 1.1 1992/03/25 21:45:31 pace * Initial revision * * Revision 2.5 91/02/05 17:07:16 mrt * Changed to new Mach copyright * [91/01/31 16:19:35 mrt] * * Revision 2.4 91/01/08 15:09:17 rpd * Changed db_stop_at_pc's arguments. * Print db_inst_count, db_load_count, db_store_count. * [90/11/27 rpd] * * Revision 2.3 90/10/25 14:44:11 rwd * From rpd. * [90/10/19 17:03:17 rwd] * * Generalized the watchpoint support. * [90/10/16 rwd] * Added watchpoint support. * [90/10/16 rpd] * * Revision 2.2 90/08/27 21:52:52 dbg * Assign to db_dot before calling the print function. * [90/08/20 af] * Reduce lint. * [90/08/07 dbg] * Created. * [90/07/25 dbg] * */ /* * Author: David B. Golub, Carnegie Mellon University * Date: 7/90 */ /* * Trap entry point to kernel debugger. */ #include "param.h" #include "proc.h" #include #include extern void db_restart_at_pc(); extern boolean_t db_stop_at_pc(); extern int db_inst_count; extern int db_load_count; extern int db_store_count; 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(&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 (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(watchpt); }