1 /*- 2 * Copyright (c) 2004 Marcel Moolenaar 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #ifndef _SYS_KDB_H_ 30 #define _SYS_KDB_H_ 31 32 #include <machine/setjmp.h> 33 34 typedef int dbbe_init_f(void); 35 typedef void dbbe_trace_f(void); 36 typedef int dbbe_trap_f(int, int); 37 38 struct kdb_dbbe { 39 const char *dbbe_name; 40 dbbe_init_f *dbbe_init; 41 dbbe_trace_f *dbbe_trace; 42 dbbe_trap_f *dbbe_trap; 43 int dbbe_active; 44 }; 45 46 #define KDB_BACKEND(name, init, trace, trap) \ 47 static struct kdb_dbbe name##_dbbe = { \ 48 .dbbe_name = #name, \ 49 .dbbe_init = init, \ 50 .dbbe_trace = trace, \ 51 .dbbe_trap = trap \ 52 }; \ 53 DATA_SET(kdb_dbbe_set, name##_dbbe) 54 55 struct pcb; 56 struct thread; 57 struct trapframe; 58 59 extern int kdb_active; /* Non-zero while in debugger. */ 60 extern int debugger_on_panic; /* enter the debugger on panic. */ 61 extern struct kdb_dbbe *kdb_dbbe; /* Default debugger backend or NULL. */ 62 extern struct trapframe *kdb_frame; /* Frame to kdb_trap(). */ 63 extern struct pcb *kdb_thrctx; /* Current context. */ 64 extern struct thread *kdb_thread; /* Current thread. */ 65 66 int kdb_alt_break(int, int *); 67 void kdb_backtrace(void); 68 int kdb_dbbe_select(const char *); 69 void kdb_enter(const char *); 70 void kdb_init(void); 71 void * kdb_jmpbuf(jmp_buf); 72 void kdb_reenter(void); 73 struct pcb *kdb_thr_ctx(struct thread *); 74 struct thread *kdb_thr_first(void); 75 struct thread *kdb_thr_from_pid(pid_t); 76 struct thread *kdb_thr_lookup(lwpid_t); 77 struct thread *kdb_thr_next(struct thread *); 78 int kdb_thr_select(struct thread *); 79 int kdb_trap(int, int, struct trapframe *); 80 81 #endif /* !_SYS_KDB_H_ */ 82