2 * Copyright (c) 2004 Marcel Moolenaar
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
31 #include <sys/systm.h>
35 #include <machine/pcb.h>
38 #include <ddb/db_command.h>
39 #include <ddb/db_sym.h>
41 static db_expr_t hex2dec(db_expr_t expr);
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, boolean_t hastid, db_expr_t cnt, char *mod)
62 * We parse our own arguments. We don't like the default radix.
66 hastid = db_expression(&tid);
71 thr = kdb_thr_lookup(tid);
73 err = kdb_thr_select(thr);
75 db_printf("unable to switch to thread %ld\n",
81 db_printf("%d: invalid thread\n", (int)tid);
87 db_print_loc_and_inst(PC_REGS());
91 db_show_threads(db_expr_t addr, boolean_t hasaddr, db_expr_t cnt, char *mod)
97 thr = kdb_thr_first();
98 while (!db_pager_quit && thr != NULL) {
99 db_printf(" %6ld (%p) ", (long)thr->td_tid, thr);
100 prev_jb = kdb_jmpbuf(jb);
101 if (setjmp(jb) == 0) {
102 if (db_trace_thread(thr, 1) != 0)
106 thr = kdb_thr_next(thr);
111 * Take the parsed expression value from the command line that was parsed
112 * as a hexadecimal value and convert it as if the expression was parsed
113 * as a decimal value. Returns -1 if the expression was not a valid
117 hex2dec(db_expr_t expr)
128 val += (x % 16) * (y);
136 * Lookup a thread based on a db expression address. We assume that the
137 * address was parsed in hexadecimal. We reparse the address in decimal
138 * first and try to treat it as a thread ID to find an associated thread.
139 * If that fails and check_pid is true, we terat the decimal value as a
140 * PID. If that matches a process, we return the first thread in that
141 * process. Otherwise, we treat the addr as a pointer to a thread.
144 db_lookup_thread(db_expr_t addr, boolean_t check_pid)
151 * If the parsed address was not a valid decimal expression,
152 * assume it is a thread pointer.
154 decaddr = hex2dec(addr);
156 return ((struct thread *)addr);
158 td = kdb_thr_lookup(decaddr);
162 FOREACH_PROC_IN_SYSTEM(p) {
163 if (p->p_pid == decaddr)
164 return (FIRST_THREAD_IN_PROC(p));
166 LIST_FOREACH(p, &zombproc, p_list) {
167 if (p->p_pid == decaddr)
168 return (FIRST_THREAD_IN_PROC(p));
171 return ((struct thread *)addr);
175 * Lookup a process based on a db expression address. We assume that the
176 * address was parsed in hexadecimal. We reparse the address in decimal
177 * first and try to treat it as a PID to find an associated process.
178 * If that fails we treat the addr as a pointer to a process.
181 db_lookup_proc(db_expr_t addr)
186 decaddr = hex2dec(addr);
188 FOREACH_PROC_IN_SYSTEM(p) {
189 if (p->p_pid == decaddr)
192 LIST_FOREACH(p, &zombproc, p_list) {
193 if (p->p_pid == decaddr)
197 return ((struct proc *)addr);