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1.1.1.2 root 1: /*
1.1 root 2: * Mach Operating System
3: * Copyright (c) 1991,1990 Carnegie Mellon University
4: * All Rights Reserved.
1.1.1.2 root 5: *
1.1 root 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.
1.1.1.2 root 11: *
1.1 root 12: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
13: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
14: * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
1.1.1.2 root 15: *
1.1 root 16: * Carnegie Mellon requests users of this software to return to
1.1.1.2 root 17: *
1.1 root 18: * Software Distribution Coordinator or [email protected]
19: * School of Computer Science
20: * Carnegie Mellon University
21: * Pittsburgh PA 15213-3890
1.1.1.2 root 22: *
1.1 root 23: * any improvements or extensions that they make and grant Carnegie Mellon
24: * the rights to redistribute these changes.
25: */
26: /*
27: * Author: David B. Golub, Carnegie Mellon University
28: * Date: 7/90
29: */
30:
31: #if MACH_KDB
32:
33: /*
34: * Trap entry point to kernel debugger.
35: */
36: #include <mach/boolean.h>
37: #include <machine/db_machdep.h>
1.1.1.3 ! root 38: #include <machine/setjmp.h>
1.1 root 39: #include <ddb/db_command.h>
40: #include <ddb/db_access.h>
41: #include <ddb/db_break.h>
1.1.1.3 ! root 42: #include <ddb/db_examine.h>
! 43: #include <ddb/db_output.h>
1.1 root 44: #include <ddb/db_task_thread.h>
1.1.1.3 ! root 45: #include <ddb/db_trap.h>
1.1 root 46:
47:
48: extern jmp_buf_t *db_recover;
49:
50: extern void db_restart_at_pc();
51: extern boolean_t db_stop_at_pc();
52:
53: extern int db_inst_count;
54: extern int db_load_count;
55: extern int db_store_count;
56:
57: void
58: db_task_trap(type, code, user_space)
59: int type, code;
60: boolean_t user_space;
61: {
62: jmp_buf_t db_jmpbuf;
63: jmp_buf_t *prev;
64: boolean_t bkpt;
65: boolean_t watchpt;
66: void db_init_default_thread();
67: void db_check_breakpoint_valid();
68: task_t task_space;
69:
70: task_space = db_target_space(current_thread(), user_space);
71: bkpt = IS_BREAKPOINT_TRAP(type, code);
72: watchpt = IS_WATCHPOINT_TRAP(type, code);
73:
74: db_init_default_thread();
75: db_check_breakpoint_valid();
76: if (db_stop_at_pc(&bkpt, task_space)) {
77: if (db_inst_count) {
78: db_printf("After %d instructions (%d loads, %d stores),\n",
79: db_inst_count, db_load_count, db_store_count);
80: }
81: if (bkpt)
82: db_printf("Breakpoint at ");
83: else if (watchpt)
84: db_printf("Watchpoint at ");
85: else
86: db_printf("Stopped at ");
87: db_dot = PC_REGS(DDB_REGS);
88:
89: prev = db_recover;
90: if (_setjmp(db_recover = &db_jmpbuf) == 0)
91: db_print_loc_and_inst(db_dot, task_space);
92: else
93: db_printf("Trouble printing location %#X.\n", db_dot);
94: db_recover = prev;
95:
96: db_command_loop();
97: }
98:
99: db_restart_at_pc(watchpt, task_space);
100: }
101:
102: void
103: db_trap(type, code)
104: int type, code;
105: {
106: db_task_trap(type, code, !DB_VALID_KERN_ADDR(PC_REGS(DDB_REGS)));
107: }
108:
1.1.1.2 root 109: #endif /* MACH_KDB */
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