FreeBSD/Linux Kernel Cross Reference
sys/ddb/db_command.c
1 /*-
2 * Mach Operating System
3 * Copyright (c) 1991,1990 Carnegie Mellon University
4 * All Rights Reserved.
5 *
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.
11 *
12 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
13 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
14 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
15 *
16 * Carnegie Mellon requests users of this software to return to
17 *
18 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
19 * School of Computer Science
20 * Carnegie Mellon University
21 * Pittsburgh PA 15213-3890
22 *
23 * any improvements or extensions that they make and grant Carnegie the
24 * rights to redistribute these changes.
25 */
26 /*
27 * Author: David B. Golub, Carnegie Mellon University
28 * Date: 7/90
29 */
30 /*
31 * Command dispatcher.
32 */
33
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD: releng/9.0/sys/ddb/db_command.c 222801 2011-06-07 01:28:12Z marcel $");
36
37 #include <sys/param.h>
38 #include <sys/linker_set.h>
39 #include <sys/lock.h>
40 #include <sys/kdb.h>
41 #include <sys/mutex.h>
42 #include <sys/proc.h>
43 #include <sys/reboot.h>
44 #include <sys/signalvar.h>
45 #include <sys/systm.h>
46 #include <sys/cons.h>
47 #include <sys/conf.h>
48 #include <sys/watchdog.h>
49 #include <sys/kernel.h>
50
51 #include <ddb/ddb.h>
52 #include <ddb/db_command.h>
53 #include <ddb/db_lex.h>
54 #include <ddb/db_output.h>
55
56 #include <machine/cpu.h>
57 #include <machine/setjmp.h>
58
59 /*
60 * Exported global variables
61 */
62 boolean_t db_cmd_loop_done;
63 db_addr_t db_dot;
64 db_addr_t db_last_addr;
65 db_addr_t db_prev;
66 db_addr_t db_next;
67
68 static db_cmdfcn_t db_dump;
69 static db_cmdfcn_t db_fncall;
70 static db_cmdfcn_t db_gdb;
71 static db_cmdfcn_t db_halt;
72 static db_cmdfcn_t db_kill;
73 static db_cmdfcn_t db_reset;
74 static db_cmdfcn_t db_stack_trace;
75 static db_cmdfcn_t db_stack_trace_all;
76 static db_cmdfcn_t db_watchdog;
77
78 /*
79 * 'show' commands
80 */
81
82 static struct command db_show_all_cmds[] = {
83 { "trace", db_stack_trace_all, 0, 0 },
84 };
85 struct command_table db_show_all_table =
86 LIST_HEAD_INITIALIZER(db_show_all_table);
87
88 static struct command db_show_cmds[] = {
89 { "all", 0, 0, &db_show_all_table },
90 { "registers", db_show_regs, 0, 0 },
91 { "breaks", db_listbreak_cmd, 0, 0 },
92 { "threads", db_show_threads, 0, 0 },
93 };
94 struct command_table db_show_table = LIST_HEAD_INITIALIZER(db_show_table);
95
96 static struct command db_cmds[] = {
97 { "print", db_print_cmd, 0, 0 },
98 { "p", db_print_cmd, 0, 0 },
99 { "examine", db_examine_cmd, CS_SET_DOT, 0 },
100 { "x", db_examine_cmd, CS_SET_DOT, 0 },
101 { "search", db_search_cmd, CS_OWN|CS_SET_DOT, 0 },
102 { "set", db_set_cmd, CS_OWN, 0 },
103 { "write", db_write_cmd, CS_MORE|CS_SET_DOT, 0 },
104 { "w", db_write_cmd, CS_MORE|CS_SET_DOT, 0 },
105 { "delete", db_delete_cmd, 0, 0 },
106 { "d", db_delete_cmd, 0, 0 },
107 { "dump", db_dump, 0, 0 },
108 { "break", db_breakpoint_cmd, 0, 0 },
109 { "b", db_breakpoint_cmd, 0, 0 },
110 { "dwatch", db_deletewatch_cmd, 0, 0 },
111 { "watch", db_watchpoint_cmd, CS_MORE,0 },
112 { "dhwatch", db_deletehwatch_cmd, 0, 0 },
113 { "hwatch", db_hwatchpoint_cmd, 0, 0 },
114 { "step", db_single_step_cmd, 0, 0 },
115 { "s", db_single_step_cmd, 0, 0 },
116 { "continue", db_continue_cmd, 0, 0 },
117 { "c", db_continue_cmd, 0, 0 },
118 { "until", db_trace_until_call_cmd,0, 0 },
119 { "next", db_trace_until_matching_cmd,0, 0 },
120 { "match", db_trace_until_matching_cmd,0, 0 },
121 { "trace", db_stack_trace, CS_OWN, 0 },
122 { "t", db_stack_trace, CS_OWN, 0 },
123 /* XXX alias for all trace */
124 { "alltrace", db_stack_trace_all, 0, 0 },
125 { "where", db_stack_trace, CS_OWN, 0 },
126 { "bt", db_stack_trace, CS_OWN, 0 },
127 { "call", db_fncall, CS_OWN, 0 },
128 { "show", 0, 0, &db_show_table },
129 { "ps", db_ps, 0, 0 },
130 { "gdb", db_gdb, 0, 0 },
131 { "halt", db_halt, 0, 0 },
132 { "reboot", db_reset, 0, 0 },
133 { "reset", db_reset, 0, 0 },
134 { "kill", db_kill, CS_OWN, 0 },
135 { "watchdog", db_watchdog, CS_OWN, 0 },
136 { "thread", db_set_thread, CS_OWN, 0 },
137 { "run", db_run_cmd, CS_OWN, 0 },
138 { "script", db_script_cmd, CS_OWN, 0 },
139 { "scripts", db_scripts_cmd, 0, 0 },
140 { "unscript", db_unscript_cmd, CS_OWN, 0 },
141 { "capture", db_capture_cmd, CS_OWN, 0 },
142 { "textdump", db_textdump_cmd, CS_OWN, 0 },
143 };
144 struct command_table db_cmd_table = LIST_HEAD_INITIALIZER(db_cmd_table);
145
146 static struct command *db_last_command = 0;
147
148 /*
149 * if 'ed' style: 'dot' is set at start of last item printed,
150 * and '+' points to next line.
151 * Otherwise: 'dot' points to next item, '..' points to last.
152 */
153 static boolean_t db_ed_style = TRUE;
154
155 /*
156 * Utility routine - discard tokens through end-of-line.
157 */
158 void
159 db_skip_to_eol()
160 {
161 int t;
162 do {
163 t = db_read_token();
164 } while (t != tEOL);
165 }
166
167 /*
168 * Results of command search.
169 */
170 #define CMD_UNIQUE 0
171 #define CMD_FOUND 1
172 #define CMD_NONE 2
173 #define CMD_AMBIGUOUS 3
174 #define CMD_HELP 4
175
176 static void db_cmd_match(char *name, struct command *cmd,
177 struct command **cmdp, int *resultp);
178 static void db_cmd_list(struct command_table *table);
179 static int db_cmd_search(char *name, struct command_table *table,
180 struct command **cmdp);
181 static void db_command(struct command **last_cmdp,
182 struct command_table *cmd_table, int dopager);
183
184 /*
185 * Initialize the command lists from the static tables.
186 */
187 void
188 db_command_init(void)
189 {
190 #define N(a) (sizeof(a) / sizeof(a[0]))
191 int i;
192
193 for (i = 0; i < N(db_cmds); i++)
194 db_command_register(&db_cmd_table, &db_cmds[i]);
195 for (i = 0; i < N(db_show_cmds); i++)
196 db_command_register(&db_show_table, &db_show_cmds[i]);
197 for (i = 0; i < N(db_show_all_cmds); i++)
198 db_command_register(&db_show_all_table, &db_show_all_cmds[i]);
199 #undef N
200 }
201
202 /*
203 * Register a command.
204 */
205 void
206 db_command_register(struct command_table *list, struct command *cmd)
207 {
208 struct command *c, *last;
209
210 last = NULL;
211 LIST_FOREACH(c, list, next) {
212 int n = strcmp(cmd->name, c->name);
213
214 /* Check that the command is not already present. */
215 if (n == 0) {
216 printf("%s: Warning, the command \"%s\" already exists;"
217 " ignoring request\n", __func__, cmd->name);
218 return;
219 }
220 if (n < 0) {
221 /* NB: keep list sorted lexicographically */
222 LIST_INSERT_BEFORE(c, cmd, next);
223 return;
224 }
225 last = c;
226 }
227 if (last == NULL)
228 LIST_INSERT_HEAD(list, cmd, next);
229 else
230 LIST_INSERT_AFTER(last, cmd, next);
231 }
232
233 /*
234 * Remove a command previously registered with db_command_register.
235 */
236 void
237 db_command_unregister(struct command_table *list, struct command *cmd)
238 {
239 struct command *c;
240
241 LIST_FOREACH(c, list, next) {
242 if (cmd == c) {
243 LIST_REMOVE(cmd, next);
244 return;
245 }
246 }
247 /* NB: intentionally quiet */
248 }
249
250 /*
251 * Helper function to match a single command.
252 */
253 static void
254 db_cmd_match(name, cmd, cmdp, resultp)
255 char * name;
256 struct command *cmd;
257 struct command **cmdp; /* out */
258 int * resultp;
259 {
260 char *lp, *rp;
261 int c;
262
263 lp = name;
264 rp = cmd->name;
265 while ((c = *lp) == *rp) {
266 if (c == 0) {
267 /* complete match */
268 *cmdp = cmd;
269 *resultp = CMD_UNIQUE;
270 return;
271 }
272 lp++;
273 rp++;
274 }
275 if (c == 0) {
276 /* end of name, not end of command -
277 partial match */
278 if (*resultp == CMD_FOUND) {
279 *resultp = CMD_AMBIGUOUS;
280 /* but keep looking for a full match -
281 this lets us match single letters */
282 } else {
283 *cmdp = cmd;
284 *resultp = CMD_FOUND;
285 }
286 }
287 }
288
289 /*
290 * Search for command prefix.
291 */
292 static int
293 db_cmd_search(name, table, cmdp)
294 char * name;
295 struct command_table *table;
296 struct command **cmdp; /* out */
297 {
298 struct command *cmd;
299 int result = CMD_NONE;
300
301 LIST_FOREACH(cmd, table, next) {
302 db_cmd_match(name,cmd,cmdp,&result);
303 if (result == CMD_UNIQUE)
304 break;
305 }
306
307 if (result == CMD_NONE) {
308 /* check for 'help' */
309 if (name[0] == 'h' && name[1] == 'e'
310 && name[2] == 'l' && name[3] == 'p')
311 result = CMD_HELP;
312 }
313 return (result);
314 }
315
316 static void
317 db_cmd_list(table)
318 struct command_table *table;
319 {
320 register struct command *cmd;
321
322 LIST_FOREACH(cmd, table, next) {
323 db_printf("%-12s", cmd->name);
324 db_end_line(12);
325 }
326 }
327
328 static void
329 db_command(last_cmdp, cmd_table, dopager)
330 struct command **last_cmdp; /* IN_OUT */
331 struct command_table *cmd_table;
332 int dopager;
333 {
334 struct command *cmd = NULL;
335 int t;
336 char modif[TOK_STRING_SIZE];
337 db_expr_t addr, count;
338 boolean_t have_addr = FALSE;
339 int result;
340
341 t = db_read_token();
342 if (t == tEOL) {
343 /* empty line repeats last command, at 'next' */
344 cmd = *last_cmdp;
345 addr = (db_expr_t)db_next;
346 have_addr = FALSE;
347 count = 1;
348 modif[0] = '\0';
349 }
350 else if (t == tEXCL) {
351 db_fncall((db_expr_t)0, (boolean_t)0, (db_expr_t)0, (char *)0);
352 return;
353 }
354 else if (t != tIDENT) {
355 db_printf("?\n");
356 db_flush_lex();
357 return;
358 }
359 else {
360 /*
361 * Search for command
362 */
363 while (cmd_table) {
364 result = db_cmd_search(db_tok_string,
365 cmd_table,
366 &cmd);
367 switch (result) {
368 case CMD_NONE:
369 db_printf("No such command\n");
370 db_flush_lex();
371 return;
372 case CMD_AMBIGUOUS:
373 db_printf("Ambiguous\n");
374 db_flush_lex();
375 return;
376 case CMD_HELP:
377 db_cmd_list(cmd_table);
378 db_flush_lex();
379 return;
380 default:
381 break;
382 }
383 if ((cmd_table = cmd->more) != NULL) {
384 t = db_read_token();
385 if (t != tIDENT) {
386 db_cmd_list(cmd_table);
387 db_flush_lex();
388 return;
389 }
390 }
391 }
392
393 if ((cmd->flag & CS_OWN) == 0) {
394 /*
395 * Standard syntax:
396 * command [/modifier] [addr] [,count]
397 */
398 t = db_read_token();
399 if (t == tSLASH) {
400 t = db_read_token();
401 if (t != tIDENT) {
402 db_printf("Bad modifier\n");
403 db_flush_lex();
404 return;
405 }
406 db_strcpy(modif, db_tok_string);
407 }
408 else {
409 db_unread_token(t);
410 modif[0] = '\0';
411 }
412
413 if (db_expression(&addr)) {
414 db_dot = (db_addr_t) addr;
415 db_last_addr = db_dot;
416 have_addr = TRUE;
417 }
418 else {
419 addr = (db_expr_t) db_dot;
420 have_addr = FALSE;
421 }
422 t = db_read_token();
423 if (t == tCOMMA) {
424 if (!db_expression(&count)) {
425 db_printf("Count missing\n");
426 db_flush_lex();
427 return;
428 }
429 }
430 else {
431 db_unread_token(t);
432 count = -1;
433 }
434 if ((cmd->flag & CS_MORE) == 0) {
435 db_skip_to_eol();
436 }
437 }
438 }
439 *last_cmdp = cmd;
440 if (cmd != 0) {
441 /*
442 * Execute the command.
443 */
444 if (dopager)
445 db_enable_pager();
446 else
447 db_disable_pager();
448 (*cmd->fcn)(addr, have_addr, count, modif);
449 if (dopager)
450 db_disable_pager();
451
452 if (cmd->flag & CS_SET_DOT) {
453 /*
454 * If command changes dot, set dot to
455 * previous address displayed (if 'ed' style).
456 */
457 if (db_ed_style) {
458 db_dot = db_prev;
459 }
460 else {
461 db_dot = db_next;
462 }
463 }
464 else {
465 /*
466 * If command does not change dot,
467 * set 'next' location to be the same.
468 */
469 db_next = db_dot;
470 }
471 }
472 }
473
474 /*
475 * At least one non-optional command must be implemented using
476 * DB_COMMAND() so that db_cmd_set gets created. Here is one.
477 */
478 DB_COMMAND(panic, db_panic)
479 {
480 db_disable_pager();
481 panic("from debugger");
482 }
483
484 void
485 db_command_loop()
486 {
487 /*
488 * Initialize 'prev' and 'next' to dot.
489 */
490 db_prev = db_dot;
491 db_next = db_dot;
492
493 db_cmd_loop_done = 0;
494 while (!db_cmd_loop_done) {
495 if (db_print_position() != 0)
496 db_printf("\n");
497
498 db_printf("db> ");
499 (void) db_read_line();
500
501 db_command(&db_last_command, &db_cmd_table, /* dopager */ 1);
502 }
503 }
504
505 /*
506 * Execute a command on behalf of a script. The caller is responsible for
507 * making sure that the command string is < DB_MAXLINE or it will be
508 * truncated.
509 *
510 * XXXRW: Runs by injecting faked input into DDB input stream; it would be
511 * nicer to use an alternative approach that didn't mess with the previous
512 * command buffer.
513 */
514 void
515 db_command_script(const char *command)
516 {
517 db_prev = db_next = db_dot;
518 db_inject_line(command);
519 db_command(&db_last_command, &db_cmd_table, /* dopager */ 0);
520 }
521
522 void
523 db_error(s)
524 const char *s;
525 {
526 if (s)
527 db_printf("%s", s);
528 db_flush_lex();
529 kdb_reenter();
530 }
531
532 static void
533 db_dump(db_expr_t dummy, boolean_t dummy2, db_expr_t dummy3, char *dummy4)
534 {
535 int error;
536
537 error = doadump(FALSE);
538 if (error) {
539 db_printf("Cannot dump: ");
540 switch (error) {
541 case EBUSY:
542 db_printf("debugger got invoked while dumping.\n");
543 break;
544 case ENXIO:
545 db_printf("no dump device specified.\n");
546 break;
547 default:
548 db_printf("unknown error (error=%d).\n", error);
549 break;
550 }
551 }
552 }
553
554 /*
555 * Call random function:
556 * !expr(arg,arg,arg)
557 */
558
559 /* The generic implementation supports a maximum of 10 arguments. */
560 typedef db_expr_t __db_f(db_expr_t, db_expr_t, db_expr_t, db_expr_t,
561 db_expr_t, db_expr_t, db_expr_t, db_expr_t, db_expr_t, db_expr_t);
562
563 static __inline int
564 db_fncall_generic(db_expr_t addr, db_expr_t *rv, int nargs, db_expr_t args[])
565 {
566 __db_f *f = (__db_f *)addr;
567
568 if (nargs > 10) {
569 db_printf("Too many arguments (max 10)\n");
570 return (0);
571 }
572 *rv = (*f)(args[0], args[1], args[2], args[3], args[4], args[5],
573 args[6], args[7], args[8], args[9]);
574 return (1);
575 }
576
577 static void
578 db_fncall(dummy1, dummy2, dummy3, dummy4)
579 db_expr_t dummy1;
580 boolean_t dummy2;
581 db_expr_t dummy3;
582 char * dummy4;
583 {
584 db_expr_t fn_addr;
585 db_expr_t args[DB_MAXARGS];
586 int nargs = 0;
587 db_expr_t retval;
588 int t;
589
590 if (!db_expression(&fn_addr)) {
591 db_printf("Bad function\n");
592 db_flush_lex();
593 return;
594 }
595
596 t = db_read_token();
597 if (t == tLPAREN) {
598 if (db_expression(&args[0])) {
599 nargs++;
600 while ((t = db_read_token()) == tCOMMA) {
601 if (nargs == DB_MAXARGS) {
602 db_printf("Too many arguments (max %d)\n", DB_MAXARGS);
603 db_flush_lex();
604 return;
605 }
606 if (!db_expression(&args[nargs])) {
607 db_printf("Argument missing\n");
608 db_flush_lex();
609 return;
610 }
611 nargs++;
612 }
613 db_unread_token(t);
614 }
615 if (db_read_token() != tRPAREN) {
616 db_printf("?\n");
617 db_flush_lex();
618 return;
619 }
620 }
621 db_skip_to_eol();
622 db_disable_pager();
623
624 if (DB_CALL(fn_addr, &retval, nargs, args))
625 db_printf("= %#lr\n", (long)retval);
626 }
627
628 static void
629 db_halt(db_expr_t dummy, boolean_t dummy2, db_expr_t dummy3, char *dummy4)
630 {
631
632 cpu_halt();
633 }
634
635 static void
636 db_kill(dummy1, dummy2, dummy3, dummy4)
637 db_expr_t dummy1;
638 boolean_t dummy2;
639 db_expr_t dummy3;
640 char * dummy4;
641 {
642 db_expr_t old_radix, pid, sig;
643 struct proc *p;
644
645 #define DB_ERROR(f) do { db_printf f; db_flush_lex(); goto out; } while (0)
646
647 /*
648 * PIDs and signal numbers are typically represented in base
649 * 10, so make that the default here. It can, of course, be
650 * overridden by specifying a prefix.
651 */
652 old_radix = db_radix;
653 db_radix = 10;
654 /* Retrieve arguments. */
655 if (!db_expression(&sig))
656 DB_ERROR(("Missing signal number\n"));
657 if (!db_expression(&pid))
658 DB_ERROR(("Missing process ID\n"));
659 db_skip_to_eol();
660 if (!_SIG_VALID(sig))
661 DB_ERROR(("Signal number out of range\n"));
662
663 /*
664 * Find the process in question. allproc_lock is not needed
665 * since we're in DDB.
666 */
667 /* sx_slock(&allproc_lock); */
668 FOREACH_PROC_IN_SYSTEM(p)
669 if (p->p_pid == pid)
670 break;
671 /* sx_sunlock(&allproc_lock); */
672 if (p == NULL)
673 DB_ERROR(("Can't find process with pid %ld\n", (long) pid));
674
675 /* If it's already locked, bail; otherwise, do the deed. */
676 if (PROC_TRYLOCK(p) == 0)
677 DB_ERROR(("Can't lock process with pid %ld\n", (long) pid));
678 else {
679 pksignal(p, sig, NULL);
680 PROC_UNLOCK(p);
681 }
682
683 out:
684 db_radix = old_radix;
685 #undef DB_ERROR
686 }
687
688 /*
689 * Reboot. In case there is an additional argument, take it as delay in
690 * seconds. Default to 15s if we cannot parse it and make sure we will
691 * never wait longer than 1 week. Some code is similar to
692 * kern_shutdown.c:shutdown_panic().
693 */
694 #ifndef DB_RESET_MAXDELAY
695 #define DB_RESET_MAXDELAY (3600 * 24 * 7)
696 #endif
697
698 static void
699 db_reset(db_expr_t addr, boolean_t have_addr, db_expr_t count __unused,
700 char *modif __unused)
701 {
702 int delay, loop;
703
704 if (have_addr) {
705 delay = (int)db_hex2dec(addr);
706
707 /* If we parse to fail, use 15s. */
708 if (delay == -1)
709 delay = 15;
710
711 /* Cap at one week. */
712 if ((uintmax_t)delay > (uintmax_t)DB_RESET_MAXDELAY)
713 delay = DB_RESET_MAXDELAY;
714
715 db_printf("Automatic reboot in %d seconds - "
716 "press a key on the console to abort\n", delay);
717 for (loop = delay * 10; loop > 0; --loop) {
718 DELAY(1000 * 100); /* 1/10th second */
719 /* Did user type a key? */
720 if (cncheckc() != -1)
721 return;
722 }
723 }
724
725 cpu_reset();
726 }
727
728 static void
729 db_watchdog(dummy1, dummy2, dummy3, dummy4)
730 db_expr_t dummy1;
731 boolean_t dummy2;
732 db_expr_t dummy3;
733 char * dummy4;
734 {
735 db_expr_t old_radix, tout;
736 int err, i;
737
738 old_radix = db_radix;
739 db_radix = 10;
740 err = db_expression(&tout);
741 db_skip_to_eol();
742 db_radix = old_radix;
743
744 /* If no argument is provided the watchdog will just be disabled. */
745 if (err == 0) {
746 db_printf("No argument provided, disabling watchdog\n");
747 tout = 0;
748 } else if ((tout & WD_INTERVAL) == WD_TO_NEVER) {
749 db_error("Out of range watchdog interval\n");
750 return;
751 }
752 EVENTHANDLER_INVOKE(watchdog_list, tout, &i);
753 }
754
755 static void
756 db_gdb(db_expr_t dummy1, boolean_t dummy2, db_expr_t dummy3, char *dummy4)
757 {
758
759 if (kdb_dbbe_select("gdb") != 0) {
760 db_printf("The remote GDB backend could not be selected.\n");
761 return;
762 }
763 /*
764 * Mark that we are done in the debugger. kdb_trap()
765 * should re-enter with the new backend.
766 */
767 db_cmd_loop_done = 1;
768 db_printf("(ctrl-c will return control to ddb)\n");
769 }
770
771 static void
772 db_stack_trace(db_expr_t tid, boolean_t hastid, db_expr_t count, char *modif)
773 {
774 struct thread *td;
775 db_expr_t radix;
776 pid_t pid;
777 int t;
778
779 /*
780 * We parse our own arguments. We don't like the default radix.
781 */
782 radix = db_radix;
783 db_radix = 10;
784 hastid = db_expression(&tid);
785 t = db_read_token();
786 if (t == tCOMMA) {
787 if (!db_expression(&count)) {
788 db_printf("Count missing\n");
789 db_flush_lex();
790 return;
791 }
792 } else {
793 db_unread_token(t);
794 count = -1;
795 }
796 db_skip_to_eol();
797 db_radix = radix;
798
799 if (hastid) {
800 td = kdb_thr_lookup((lwpid_t)tid);
801 if (td == NULL)
802 td = kdb_thr_from_pid((pid_t)tid);
803 if (td == NULL) {
804 db_printf("Thread %d not found\n", (int)tid);
805 return;
806 }
807 } else
808 td = kdb_thread;
809 if (td->td_proc != NULL)
810 pid = td->td_proc->p_pid;
811 else
812 pid = -1;
813 db_printf("Tracing pid %d tid %ld td %p\n", pid, (long)td->td_tid, td);
814 db_trace_thread(td, count);
815 }
816
817 static void
818 db_stack_trace_all(db_expr_t dummy, boolean_t dummy2, db_expr_t dummy3,
819 char *dummy4)
820 {
821 struct proc *p;
822 struct thread *td;
823 jmp_buf jb;
824 void *prev_jb;
825
826 FOREACH_PROC_IN_SYSTEM(p) {
827 prev_jb = kdb_jmpbuf(jb);
828 if (setjmp(jb) == 0) {
829 FOREACH_THREAD_IN_PROC(p, td) {
830 db_printf("\nTracing command %s pid %d tid %ld td %p\n",
831 p->p_comm, p->p_pid, (long)td->td_tid, td);
832 db_trace_thread(td, -1);
833 if (db_pager_quit) {
834 kdb_jmpbuf(prev_jb);
835 return;
836 }
837 }
838 }
839 kdb_jmpbuf(prev_jb);
840 }
841 }
842
843 /*
844 * Take the parsed expression value from the command line that was parsed
845 * as a hexadecimal value and convert it as if the expression was parsed
846 * as a decimal value. Returns -1 if the expression was not a valid
847 * decimal value.
848 */
849 db_expr_t
850 db_hex2dec(db_expr_t expr)
851 {
852 uintptr_t x, y;
853 db_expr_t val;
854
855 y = 1;
856 val = 0;
857 x = expr;
858 while (x != 0) {
859 if (x % 16 > 9)
860 return (-1);
861 val += (x % 16) * (y);
862 x >>= 4;
863 y *= 10;
864 }
865 return (val);
866 }
Cache object: f22d3d18f4bef58ab9906c8cc70c0374
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