projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 15637ed4 RG |
1 | /* |
| 2 | * Mach Operating System | |
| 3 | * Copyright (c) 1991,1990 Carnegie Mellon University | |
| 4 | * All Rights Reserved. | |
| 5 | * | |
| 6 | * Permission to use, copy, modify and distribute this software and its | |
| 7 | * documentation is hereby granted, provided that both the copyright | |
| 8 | * notice and this permission notice appear in all copies of the | |
| 9 | * software, derivative works or modified versions, and any portions | |
| 10 | * thereof, and that both notices appear in supporting documentation. | |
| 11 | * | |
| 12 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS | |
| 13 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR | |
| 14 | * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. | |
| 15 | * | |
| 16 | * Carnegie Mellon requests users of this software to return to | |
| 17 | * | |
| 18 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU | |
| 19 | * School of Computer Science | |
| 20 | * Carnegie Mellon University | |
| 21 | * Pittsburgh PA 15213-3890 | |
| 22 | * | |
| 23 | * any improvements or extensions that they make and grant Carnegie the | |
| 24 | * rights to redistribute these changes. | |
| 15637ed4 | 25 | * |
| 4c45483e | 26 | * $Id: db_trap.c,v 1.2 1993/10/16 16:47:28 rgrimes Exp $ |
| 15637ed4 | 27 | */ |
| cbeffc91 | 28 | |
| 15637ed4 RG |
29 | /* |
| 30 | * Author: David B. Golub, Carnegie Mellon University | |
| 31 | * Date: 7/90 | |
| 32 | */ | |
| 33 | ||
| 34 | /* | |
| 35 | * Trap entry point to kernel debugger. | |
| 36 | */ | |
| 37 | #include "param.h" | |
| 4c45483e | 38 | #include "systm.h" |
| 15637ed4 | 39 | #include "proc.h" |
| 4c45483e | 40 | #include "ddb/ddb.h" |
| 15637ed4 RG |
41 | #include <ddb/db_command.h> |
| 42 | #include <ddb/db_break.h> | |
| 43 | ||
| 44 | extern void db_restart_at_pc(); | |
| 45 | extern boolean_t db_stop_at_pc(); | |
| 46 | ||
| 47 | extern int db_inst_count; | |
| 48 | extern int db_load_count; | |
| 49 | extern int db_store_count; | |
| 50 | ||
| 4c45483e | 51 | void |
| 15637ed4 RG |
52 | db_trap(type, code) |
| 53 | int type, code; | |
| 54 | { | |
| 55 | boolean_t bkpt; | |
| 56 | boolean_t watchpt; | |
| 57 | ||
| 58 | bkpt = IS_BREAKPOINT_TRAP(type, code); | |
| 59 | watchpt = IS_WATCHPOINT_TRAP(type, code); | |
| 60 | ||
| 61 | if (db_stop_at_pc(&bkpt)) { | |
| 62 | if (db_inst_count) { | |
| 63 | db_printf("After %d instructions (%d loads, %d stores),\n", | |
| 64 | db_inst_count, db_load_count, db_store_count); | |
| 65 | } | |
| 66 | if (bkpt) | |
| 67 | db_printf("Breakpoint at\t"); | |
| 68 | else if (watchpt) | |
| 69 | db_printf("Watchpoint at\t"); | |
| 70 | else | |
| 71 | db_printf("Stopped at\t"); | |
| 72 | db_dot = PC_REGS(DDB_REGS); | |
| 73 | db_print_loc_and_inst(db_dot); | |
| 74 | ||
| 75 | db_command_loop(); | |
| 76 | } | |
| 77 | ||
| 78 | db_restart_at_pc(watchpt); | |
| 79 | } |