| | 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. |
| | 25 | * |
| | 26 | * $FreeBSD: src/sys/ddb/db_trap.c,v 1.14 1999/08/28 00:41:11 peter Exp $ |
| | 27 | * $DragonFly: src/sys/ddb/db_trap.c,v 1.3 2003/11/08 03:06:53 dillon Exp $ |
| | 28 | */ |
| | 29 | |
| | 30 | /* |
| | 31 | * Author: David B. Golub, Carnegie Mellon University |
| | 32 | * Date: 7/90 |
| | 33 | */ |
| | 34 | |
| | 35 | /* |
| | 36 | * Trap entry point to kernel debugger. |
| | 37 | */ |
| | 38 | #include <sys/param.h> |
| | 39 | |
| | 40 | #include <ddb/ddb.h> |
| | 41 | #include <ddb/db_command.h> |
| | 42 | |
| | 43 | #include <setjmp.h> |
| | 44 | |
| | 45 | extern jmp_buf db_jmpbuf; |
| | 46 | |
| | 47 | void |
| | 48 | db_trap(type, code) |
| | 49 | int type, code; |
| | 50 | { |
| | 51 | boolean_t bkpt; |
| | 52 | boolean_t watchpt; |
| | 53 | |
| | 54 | bkpt = IS_BREAKPOINT_TRAP(type, code); |
| | 55 | watchpt = IS_WATCHPOINT_TRAP(type, code); |
| | 56 | |
| | 57 | if (db_stop_at_pc(&bkpt)) { |
| | 58 | if (db_inst_count) { |
| | 59 | db_printf("After %d instructions (%d loads, %d stores),\n", |
| | 60 | db_inst_count, db_load_count, db_store_count); |
| | 61 | } |
| | 62 | if (bkpt) |
| | 63 | db_printf("Breakpoint at\t"); |
| | 64 | else if (watchpt) |
| | 65 | db_printf("Watchpoint at\t"); |
| | 66 | else |
| | 67 | db_printf("Stopped at\t"); |
| | 68 | db_dot = PC_REGS(DDB_REGS); |
| | 69 | if (setjmp(db_jmpbuf) == 0) |
| | 70 | db_print_loc_and_inst(db_dot, DDB_REGS); |
| | 71 | |
| | 72 | db_command_loop(); |
| | 73 | } |
| | 74 | |
| | 75 | db_restart_at_pc(watchpt); |
| | 76 | } |
projects / dragonfly.git / blame_incremental