2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2004 Marcel Moolenaar
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/systm.h>
37 #include <machine/pcb.h>
40 #include <ddb/db_command.h>
41 #include <ddb/db_sym.h>
49 if (kdb_thread->td_proc != NULL)
50 pid = kdb_thread->td_proc->p_pid;
51 db_printf("[ thread pid %d tid %ld ]\n", pid, (long)kdb_thread->td_tid);
55 db_set_thread(db_expr_t tid, bool hastid, db_expr_t cnt, char *mod)
61 thr = db_lookup_thread(tid, false);
63 err = kdb_thr_select(thr);
65 db_printf("unable to switch to thread %ld\n",
71 db_printf("%d: invalid thread\n", (int)tid);
77 db_print_loc_and_inst(PC_REGS());
81 db_show_threads(db_expr_t addr, bool hasaddr, db_expr_t cnt, char *mod)
87 thr = kdb_thr_first();
88 while (!db_pager_quit && thr != NULL) {
89 db_printf(" %6ld (%p) (stack %p) ", (long)thr->td_tid, thr,
90 (void *)thr->td_kstack);
91 prev_jb = kdb_jmpbuf(jb);
92 if (setjmp(jb) == 0) {
93 if (thr->td_proc->p_flag & P_INMEM) {
94 if (db_trace_thread(thr, 1) != 0)
97 db_printf("*** swapped out\n");
100 thr = kdb_thr_next(thr);
105 * Lookup a thread based on a db expression address. We assume that the
106 * address was parsed in hexadecimal. We reparse the address in decimal
107 * first and try to treat it as a thread ID to find an associated thread.
108 * If that fails and check_pid is true, we treat the decimal value as a
109 * PID. If that matches a process, we return the first thread in that
110 * process. Otherwise, we treat the addr as a pointer to a thread.
113 db_lookup_thread(db_expr_t addr, bool check_pid)
119 * If the parsed address was not a valid decimal expression,
120 * assume it is a thread pointer.
122 decaddr = db_hex2dec(addr);
124 return ((struct thread *)addr);
126 td = kdb_thr_lookup(decaddr);
130 td = kdb_thr_from_pid(decaddr);
134 return ((struct thread *)addr);
138 * Lookup a process based on a db expression address. We assume that the
139 * address was parsed in hexadecimal. We reparse the address in decimal
140 * first and try to treat it as a PID to find an associated process.
141 * If that fails we treat the addr as a pointer to a process.
144 db_lookup_proc(db_expr_t addr)
149 decaddr = db_hex2dec(addr);
151 LIST_FOREACH(p, PIDHASH(decaddr), p_hash) {
152 if (p->p_pid == decaddr)
156 return ((struct proc *)addr);