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 AUTHORS ``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 AUTHORS 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>
32 #include <sys/types.h>
33 #include <sys/signal.h>
42 #include <frame-unwind.h>
45 #include <machine/pcb.h>
47 static uintptr_t dumppcb;
50 static uintptr_t stoppcbs;
51 static __cpumask_t stopped_cpus;
53 static struct kthr *first;
57 kgdb_lookup(const char *sym)
61 nl[0].n_type = N_UNDF;
62 nl[0].n_name = (char *)(uintptr_t)sym;
64 if (kvm_nlist(kvm, nl) != 0)
66 return (nl[0].n_value);
76 kgdb_thr_add_procs(uintptr_t paddr)
84 if (kvm_read(kvm, paddr, &p, sizeof(p)) != sizeof(p)) {
85 warnx("kvm_read: %s", kvm_geterr(kvm));
88 addr = (uintptr_t)TAILQ_FIRST(&p.p_threads);
90 if (kvm_read(kvm, addr, &td, sizeof(td)) !=
92 warnx("kvm_read: %s", kvm_geterr(kvm));
95 kt = malloc(sizeof(*kt));
98 if (td.td_tid == dumptid)
100 else if (td.td_state == TDS_RUNNING && ((1 << td.td_oncpu) & stopped_cpus)
102 kt->pcb = (uintptr_t)stoppcbs +
103 sizeof(struct pcb) * td.td_oncpu;
105 kt->pcb = (uintptr_t)td.td_pcb;
106 kt->kstack = td.td_kstack;
110 kt->cpu = td.td_oncpu;
112 addr = (uintptr_t)TAILQ_NEXT(&td, td_plist);
114 paddr = (uintptr_t)LIST_NEXT(&p, p_list);
122 uintptr_t addr, paddr;
124 while (first != NULL) {
130 addr = kgdb_lookup("_allproc");
132 warnx("kvm_nlist(_allproc): %s", kvm_geterr(kvm));
135 kvm_read(kvm, addr, &paddr, sizeof(paddr));
137 dumppcb = kgdb_lookup("_dumppcb");
139 warnx("kvm_nlist(_dumppcb): %s", kvm_geterr(kvm));
143 addr = kgdb_lookup("_dumptid");
145 kvm_read(kvm, addr, &dumptid, sizeof(dumptid));
149 addr = kgdb_lookup("_stopped_cpus");
151 kvm_read(kvm, addr, &stopped_cpus, sizeof(stopped_cpus));
155 stoppcbs = kgdb_lookup("_stoppcbs");
157 kgdb_thr_add_procs(paddr);
158 addr = kgdb_lookup("zombproc");
160 kvm_read(kvm, addr, &paddr, sizeof(paddr));
161 kgdb_thr_add_procs(paddr);
163 curkthr = kgdb_thr_lookup_tid(dumptid);
170 kgdb_thr_lookup_tid(int tid)
175 while (kt != NULL && kt->tid != tid)
181 kgdb_thr_lookup_taddr(uintptr_t taddr)
186 while (kt != NULL && kt->kaddr != taddr)
192 kgdb_thr_lookup_pid(int pid)
197 while (kt != NULL && kt->pid != pid)
203 kgdb_thr_lookup_paddr(uintptr_t paddr)
208 while (kt != NULL && kt->paddr != paddr)
214 kgdb_thr_next(struct kthr *kt)
220 kgdb_thr_select(struct kthr *kt)
230 kgdb_thr_extra_thread_info(int tid)
232 char comm[MAXCOMLEN + 1];
233 char td_name[MAXCOMLEN + 1];
239 kt = kgdb_thr_lookup_tid(tid);
242 snprintf(buf, sizeof(buf), "PID=%d", kt->pid);
243 p = (struct proc *)kt->paddr;
244 if (kvm_read(kvm, (uintptr_t)&p->p_comm[0], &comm, sizeof(comm)) !=
247 strlcat(buf, ": ", sizeof(buf));
248 strlcat(buf, comm, sizeof(buf));
249 t = (struct thread *)kt->kaddr;
250 if (kvm_read(kvm, (uintptr_t)&t->td_name[0], &td_name,
251 sizeof(td_name)) == sizeof(td_name) &&
252 strcmp(comm, td_name) != 0) {
253 strlcat(buf, "/", sizeof(buf));
254 strlcat(buf, td_name, sizeof(buf));