Line data Source code
1 : /* $OpenBSD: db_command.c,v 1.83 2018/01/05 11:10:25 pirofti Exp $ */
2 : /* $NetBSD: db_command.c,v 1.20 1996/03/30 22:30:05 christos Exp $ */
3 :
4 : /*
5 : * Mach Operating System
6 : * Copyright (c) 1993,1992,1991,1990 Carnegie Mellon University
7 : * All Rights Reserved.
8 : *
9 : * Permission to use, copy, modify and distribute this software and its
10 : * documentation is hereby granted, provided that both the copyright
11 : * notice and this permission notice appear in all copies of the
12 : * software, derivative works or modified versions, and any portions
13 : * thereof, and that both notices appear in supporting documentation.
14 : *
15 : * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
16 : * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
17 : * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
18 : *
19 : * Carnegie Mellon requests users of this software to return to
20 : *
21 : * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
22 : * School of Computer Science
23 : * Carnegie Mellon University
24 : * Pittsburgh PA 15213-3890
25 : *
26 : * any improvements or extensions that they make and grant Carnegie Mellon
27 : * the rights to redistribute these changes.
28 : */
29 :
30 : /*
31 : * Command dispatcher.
32 : */
33 : #include <sys/param.h>
34 : #include <sys/systm.h>
35 : #include <sys/proc.h>
36 : #include <sys/reboot.h>
37 : #include <sys/extent.h>
38 : #include <sys/pool.h>
39 : #include <sys/msgbuf.h>
40 : #include <sys/malloc.h>
41 : #include <sys/mount.h>
42 :
43 : #include <uvm/uvm_extern.h>
44 : #include <machine/db_machdep.h> /* type definitions */
45 :
46 : #include <ddb/db_access.h>
47 : #include <ddb/db_lex.h>
48 : #include <ddb/db_output.h>
49 : #include <ddb/db_command.h>
50 : #include <ddb/db_break.h>
51 : #include <ddb/db_watch.h>
52 : #include <ddb/db_run.h>
53 : #include <ddb/db_sym.h>
54 : #include <ddb/db_var.h>
55 : #include <ddb/db_variables.h>
56 : #include <ddb/db_interface.h>
57 : #include <ddb/db_extern.h>
58 :
59 : #include <uvm/uvm_ddb.h>
60 :
61 : /*
62 : * Exported global variables
63 : */
64 : int db_cmd_loop_done;
65 : label_t *db_recover;
66 :
67 : /*
68 : * if 'ed' style: 'dot' is set at start of last item printed,
69 : * and '+' points to next line.
70 : * Otherwise: 'dot' points to next item, '..' points to last.
71 : */
72 : boolean_t db_ed_style = TRUE;
73 :
74 : db_addr_t db_dot; /* current location */
75 : db_addr_t db_last_addr; /* last explicit address typed */
76 : db_addr_t db_prev; /* last address examined
77 : or written */
78 : db_addr_t db_next; /* next address to be examined
79 : or written */
80 :
81 : int db_cmd_search(char *, struct db_command *, struct db_command **);
82 : void db_cmd_list(struct db_command *);
83 : void db_ctf_pprint_cmd(db_expr_t, int, db_expr_t,char *);
84 : void db_map_print_cmd(db_expr_t, int, db_expr_t, char *);
85 : void db_buf_print_cmd(db_expr_t, int, db_expr_t, char *);
86 : void db_malloc_print_cmd(db_expr_t, int, db_expr_t, char *);
87 : void db_mbuf_print_cmd(db_expr_t, int, db_expr_t, char *);
88 : void db_mount_print_cmd(db_expr_t, int, db_expr_t, char *);
89 : void db_show_all_mounts(db_expr_t, int, db_expr_t, char *);
90 : void db_show_all_vnodes(db_expr_t, int, db_expr_t, char *);
91 : void db_show_all_bufs(db_expr_t, int, db_expr_t, char *);
92 : void db_object_print_cmd(db_expr_t, int, db_expr_t, char *);
93 : void db_page_print_cmd(db_expr_t, int, db_expr_t, char *);
94 : void db_extent_print_cmd(db_expr_t, int, db_expr_t, char *);
95 : void db_pool_print_cmd(db_expr_t, int, db_expr_t, char *);
96 : void db_proc_print_cmd(db_expr_t, int, db_expr_t, char *);
97 : void db_uvmexp_print_cmd(db_expr_t, int, db_expr_t, char *);
98 : void db_vnode_print_cmd(db_expr_t, int, db_expr_t, char *);
99 : void db_nfsreq_print_cmd(db_expr_t, int, db_expr_t, char *);
100 : void db_nfsnode_print_cmd(db_expr_t, int, db_expr_t, char *);
101 : void db_help_cmd(db_expr_t, int, db_expr_t, char *);
102 : void db_fncall(db_expr_t, int, db_expr_t, char *);
103 : void db_boot_sync_cmd(db_expr_t, int, db_expr_t, char *);
104 : void db_boot_crash_cmd(db_expr_t, int, db_expr_t, char *);
105 : void db_boot_dump_cmd(db_expr_t, int, db_expr_t, char *);
106 : void db_boot_halt_cmd(db_expr_t, int, db_expr_t, char *);
107 : void db_boot_reboot_cmd(db_expr_t, int, db_expr_t, char *);
108 : void db_boot_poweroff_cmd(db_expr_t, int, db_expr_t, char *);
109 : void db_stack_trace_cmd(db_expr_t, int, db_expr_t, char *);
110 : void db_dmesg_cmd(db_expr_t, int, db_expr_t, char *);
111 : void db_show_panic_cmd(db_expr_t, int, db_expr_t, char *);
112 : void db_bcstats_print_cmd(db_expr_t, int, db_expr_t, char *);
113 : void db_struct_offset_cmd(db_expr_t, int, db_expr_t, char *);
114 : void db_ctf_show_struct(db_expr_t, int, db_expr_t, char *);
115 : void db_show_regs(db_expr_t, boolean_t, db_expr_t, char *);
116 : void db_write_cmd(db_expr_t, boolean_t, db_expr_t, char *);
117 : void db_witness_display(db_expr_t, int, db_expr_t, char *);
118 : void db_witness_list(db_expr_t, int, db_expr_t, char *);
119 : void db_witness_list_all(db_expr_t, int, db_expr_t, char *);
120 :
121 :
122 : /*
123 : * Utility routine - discard tokens through end-of-line.
124 : */
125 : void
126 0 : db_skip_to_eol(void)
127 : {
128 : int t;
129 0 : do {
130 0 : t = db_read_token();
131 0 : } while (t != tEOL);
132 0 : }
133 :
134 : /*
135 : * Results of command search.
136 : */
137 : #define CMD_UNIQUE 0
138 : #define CMD_FOUND 1
139 : #define CMD_NONE 2
140 : #define CMD_AMBIGUOUS 3
141 :
142 : /*
143 : * Search for command prefix.
144 : */
145 : int
146 0 : db_cmd_search(char *name, struct db_command *table, struct db_command **cmdp)
147 : {
148 : struct db_command *cmd;
149 : int result = CMD_NONE;
150 :
151 0 : for (cmd = table; cmd->name != 0; cmd++) {
152 : char *lp;
153 : char *rp;
154 : int c;
155 :
156 : lp = name;
157 : rp = cmd->name;
158 0 : while ((c = *lp) == *rp) {
159 0 : if (c == 0) {
160 : /* complete match */
161 0 : *cmdp = cmd;
162 0 : return (CMD_UNIQUE);
163 : }
164 0 : lp++;
165 0 : rp++;
166 : }
167 0 : if (c == 0) {
168 : /* end of name, not end of command -
169 : partial match */
170 0 : if (result == CMD_FOUND) {
171 : result = CMD_AMBIGUOUS;
172 : /* but keep looking for a full match -
173 : this lets us match single letters */
174 0 : }
175 : else {
176 0 : *cmdp = cmd;
177 : result = CMD_FOUND;
178 : }
179 : }
180 0 : }
181 0 : return (result);
182 0 : }
183 :
184 : void
185 0 : db_cmd_list(struct db_command *table)
186 : {
187 : struct db_command *cmd;
188 :
189 0 : for (cmd = table; cmd->name != 0; cmd++) {
190 0 : db_printf("%-12s", cmd->name);
191 0 : db_end_line(12);
192 : }
193 0 : }
194 :
195 : void
196 0 : db_command(struct db_command **last_cmdp, struct db_command *cmd_table)
197 : {
198 0 : struct db_command *cmd;
199 : int t;
200 0 : char modif[TOK_STRING_SIZE];
201 0 : db_expr_t addr, count;
202 : boolean_t have_addr = FALSE;
203 : int result;
204 :
205 0 : t = db_read_token();
206 0 : if (t == tEOL) {
207 : /* empty line repeats last command, at 'next' */
208 0 : cmd = *last_cmdp;
209 0 : addr = (db_expr_t)db_next;
210 : have_addr = FALSE;
211 0 : count = 1;
212 0 : modif[0] = '\0';
213 0 : }
214 0 : else if (t == tEXCL) {
215 0 : db_fncall(0, 0, 0, NULL);
216 0 : return;
217 : }
218 0 : else if (t != tIDENT) {
219 0 : db_printf("?\n");
220 0 : db_flush_lex();
221 0 : return;
222 : }
223 : else {
224 : /*
225 : * Search for command
226 : */
227 0 : while (cmd_table) {
228 0 : result = db_cmd_search(db_tok_string,
229 : cmd_table,
230 : &cmd);
231 0 : switch (result) {
232 : case CMD_NONE:
233 0 : db_printf("No such command\n");
234 0 : db_flush_lex();
235 0 : return;
236 : case CMD_AMBIGUOUS:
237 0 : db_printf("Ambiguous\n");
238 0 : db_flush_lex();
239 0 : return;
240 : default:
241 : break;
242 : }
243 0 : if ((cmd_table = cmd->more) != 0) {
244 0 : t = db_read_token();
245 0 : if (t != tIDENT) {
246 0 : db_cmd_list(cmd_table);
247 0 : db_flush_lex();
248 0 : return;
249 : }
250 : }
251 : }
252 :
253 0 : if ((cmd->flag & CS_OWN) == 0) {
254 : /*
255 : * Standard syntax:
256 : * command [/modifier] [addr] [,count]
257 : */
258 0 : t = db_read_token();
259 0 : if (t == tSLASH) {
260 0 : t = db_read_token();
261 0 : if (t != tIDENT) {
262 0 : db_printf("Bad modifier\n");
263 0 : db_flush_lex();
264 0 : return;
265 : }
266 0 : db_strlcpy(modif, db_tok_string, sizeof(modif));
267 0 : }
268 : else {
269 0 : db_unread_token(t);
270 0 : modif[0] = '\0';
271 : }
272 :
273 0 : if (db_expression(&addr)) {
274 0 : db_dot = (db_addr_t) addr;
275 0 : db_last_addr = db_dot;
276 : have_addr = TRUE;
277 0 : }
278 : else {
279 0 : addr = (db_expr_t) db_dot;
280 : have_addr = FALSE;
281 : }
282 0 : t = db_read_token();
283 0 : if (t == tCOMMA) {
284 0 : if (!db_expression(&count)) {
285 0 : db_printf("Count missing\n");
286 0 : db_flush_lex();
287 0 : return;
288 : }
289 : }
290 : else {
291 0 : db_unread_token(t);
292 0 : count = -1;
293 : }
294 0 : if ((cmd->flag & CS_MORE) == 0) {
295 0 : db_skip_to_eol();
296 0 : }
297 : }
298 : }
299 0 : *last_cmdp = cmd;
300 0 : if (cmd != 0) {
301 : /*
302 : * Execute the command.
303 : */
304 0 : (*cmd->fcn)(addr, have_addr, count, modif);
305 :
306 0 : if (cmd->flag & CS_SET_DOT) {
307 : /*
308 : * If command changes dot, set dot to
309 : * previous address displayed (if 'ed' style).
310 : */
311 0 : if (db_ed_style) {
312 0 : db_dot = db_prev;
313 0 : }
314 : else {
315 0 : db_dot = db_next;
316 : }
317 : }
318 : else {
319 : /*
320 : * If command does not change dot,
321 : * set 'next' location to be the same.
322 : */
323 0 : db_next = db_dot;
324 : }
325 : }
326 0 : }
327 :
328 : /*ARGSUSED*/
329 : void
330 0 : db_buf_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
331 : {
332 : boolean_t full = FALSE;
333 :
334 0 : if (modif[0] == 'f')
335 : full = TRUE;
336 :
337 0 : vfs_buf_print((void *) addr, full, db_printf);
338 0 : }
339 :
340 : /*ARGSUSED*/
341 : void
342 0 : db_map_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
343 : {
344 : boolean_t full = FALSE;
345 :
346 0 : if (modif[0] == 'f')
347 : full = TRUE;
348 :
349 0 : uvm_map_printit((struct vm_map *) addr, full, db_printf);
350 0 : }
351 :
352 : /*ARGSUSED*/
353 : void
354 0 : db_malloc_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
355 : {
356 0 : malloc_printit(db_printf);
357 0 : }
358 :
359 : /*ARGSUSED*/
360 : void
361 0 : db_mbuf_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
362 : {
363 0 : m_print((void *)addr, db_printf);
364 0 : }
365 :
366 : /*ARGSUSED*/
367 : void
368 0 : db_socket_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
369 : {
370 0 : so_print((void *)addr, db_printf);
371 0 : }
372 :
373 : /*ARGSUSED*/
374 : void
375 0 : db_mount_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
376 : {
377 : boolean_t full = FALSE;
378 :
379 0 : if (modif[0] == 'f')
380 : full = TRUE;
381 :
382 0 : vfs_mount_print((struct mount *) addr, full, db_printf);
383 0 : }
384 :
385 : void
386 0 : db_show_all_mounts(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
387 : {
388 : boolean_t full = FALSE;
389 : struct mount *mp;
390 :
391 0 : if (modif[0] == 'f')
392 0 : full = TRUE;
393 :
394 0 : TAILQ_FOREACH(mp, &mountlist, mnt_list) {
395 0 : db_printf("mountpoint %p\n", mp);
396 0 : vfs_mount_print(mp, full, db_printf);
397 : }
398 0 : }
399 :
400 : extern struct pool vnode_pool;
401 : void
402 0 : db_show_all_vnodes(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
403 : {
404 : boolean_t full = FALSE;
405 :
406 0 : if (modif[0] == 'f')
407 : full = TRUE;
408 :
409 0 : pool_walk(&vnode_pool, full, db_printf, vfs_vnode_print);
410 0 : }
411 :
412 : extern struct pool bufpool;
413 : void
414 0 : db_show_all_bufs(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
415 : {
416 : boolean_t full = FALSE;
417 :
418 0 : if (modif[0] == 'f')
419 : full = TRUE;
420 :
421 0 : pool_walk(&bufpool, full, db_printf, vfs_buf_print);
422 0 : }
423 :
424 : /*ARGSUSED*/
425 : void
426 0 : db_object_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
427 : {
428 : boolean_t full = FALSE;
429 :
430 0 : if (modif[0] == 'f')
431 : full = TRUE;
432 :
433 0 : uvm_object_printit((struct uvm_object *) addr, full, db_printf);
434 0 : }
435 :
436 : /*ARGSUSED*/
437 : void
438 0 : db_page_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
439 : {
440 : boolean_t full = FALSE;
441 :
442 0 : if (modif[0] == 'f')
443 : full = TRUE;
444 :
445 0 : uvm_page_printit((struct vm_page *) addr, full, db_printf);
446 0 : }
447 :
448 : /*ARGSUSED*/
449 : void
450 0 : db_vnode_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
451 : {
452 : boolean_t full = FALSE;
453 :
454 0 : if (modif[0] == 'f')
455 : full = TRUE;
456 :
457 0 : vfs_vnode_print((void *)addr, full, db_printf);
458 0 : }
459 :
460 : #ifdef NFSCLIENT
461 : /*ARGSUSED*/
462 : void
463 0 : db_nfsreq_print_cmd(db_expr_t addr, int have_addr, db_expr_t count,
464 : char *modif)
465 : {
466 : boolean_t full = FALSE;
467 :
468 0 : if (modif[0] == 'f')
469 : full = TRUE;
470 :
471 0 : nfs_request_print((void *)addr, full, db_printf);
472 0 : }
473 :
474 : /*ARGSUSED*/
475 : void
476 0 : db_nfsnode_print_cmd(db_expr_t addr, int have_addr, db_expr_t count,
477 : char *modif)
478 : {
479 : boolean_t full = FALSE;
480 :
481 0 : if (modif[0] == 'f')
482 : full = TRUE;
483 :
484 0 : nfs_node_print((void *)addr, full, db_printf);
485 0 : }
486 : #endif
487 :
488 :
489 : /*ARGSUSED*/
490 : void
491 0 : db_show_panic_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
492 : {
493 0 : if (panicstr)
494 0 : db_printf("%s\n", panicstr);
495 0 : else if (faultstr) {
496 0 : db_printf("kernel page fault\n");
497 0 : db_printf("%s\n", faultstr);
498 0 : db_stack_trace_print(addr, have_addr, 1, modif, db_printf);
499 0 : }
500 : else
501 0 : db_printf("the kernel did not panic\n"); /* yet */
502 0 : }
503 :
504 : /*ARGSUSED*/
505 : void
506 0 : db_extent_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
507 : {
508 0 : extent_print_all();
509 0 : }
510 :
511 : /*ARGSUSED*/
512 : void
513 0 : db_pool_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
514 : {
515 0 : pool_printit((struct pool *)addr, modif, db_printf);
516 0 : }
517 :
518 : /*ARGSUSED*/
519 : void
520 0 : db_proc_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
521 : {
522 0 : if (!have_addr)
523 0 : addr = (db_expr_t)curproc;
524 :
525 0 : proc_printit((struct proc *)addr, modif, db_printf);
526 0 : }
527 :
528 : /*ARGSUSED*/
529 : void
530 0 : db_uvmexp_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
531 : {
532 0 : uvmexp_print(db_printf);
533 0 : }
534 :
535 : void bcstats_print(int (*)(const char *, ...));
536 :
537 : /*ARGSUSED*/
538 : void
539 0 : db_bcstats_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
540 : {
541 0 : bcstats_print(db_printf);
542 0 : }
543 :
544 : /*
545 : * 'show' commands
546 : */
547 :
548 : struct db_command db_show_all_cmds[] = {
549 : { "procs", db_show_all_procs, 0, NULL },
550 : { "callout", db_show_callout, 0, NULL },
551 : { "pools", db_show_all_pools, 0, NULL },
552 : { "mounts", db_show_all_mounts, 0, NULL },
553 : { "vnodes", db_show_all_vnodes, 0, NULL },
554 : { "bufs", db_show_all_bufs, 0, NULL },
555 : #ifdef NFSCLIENT
556 : { "nfsreqs", db_show_all_nfsreqs, 0, NULL },
557 : { "nfsnodes", db_show_all_nfsnodes, 0, NULL },
558 : #endif
559 : #ifdef WITNESS
560 : { "locks", db_witness_list_all, 0, NULL },
561 : #endif
562 : { NULL, NULL, 0, NULL }
563 : };
564 :
565 : struct db_command db_show_cmds[] = {
566 : { "all", NULL, 0, db_show_all_cmds },
567 : { "bcstats", db_bcstats_print_cmd, 0, NULL },
568 : { "breaks", db_listbreak_cmd, 0, NULL },
569 : { "buf", db_buf_print_cmd, 0, NULL },
570 : { "extents", db_extent_print_cmd, 0, NULL },
571 : #ifdef WITNESS
572 : { "locks", db_witness_list, 0, NULL },
573 : #endif
574 : { "malloc", db_malloc_print_cmd, 0, NULL },
575 : { "map", db_map_print_cmd, 0, NULL },
576 : { "mbuf", db_mbuf_print_cmd, 0, NULL },
577 : { "mount", db_mount_print_cmd, 0, NULL },
578 : #ifdef NFSCLIENT
579 : { "nfsreq", db_nfsreq_print_cmd, 0, NULL },
580 : { "nfsnode", db_nfsnode_print_cmd, 0, NULL },
581 : #endif
582 : { "object", db_object_print_cmd, 0, NULL },
583 : { "page", db_page_print_cmd, 0, NULL },
584 : { "panic", db_show_panic_cmd, 0, NULL },
585 : { "pool", db_pool_print_cmd, 0, NULL },
586 : { "proc", db_proc_print_cmd, 0, NULL },
587 : { "registers", db_show_regs, 0, NULL },
588 : { "socket", db_socket_print_cmd, 0, NULL },
589 : { "struct", db_ctf_show_struct, CS_OWN, NULL },
590 : { "uvmexp", db_uvmexp_print_cmd, 0, NULL },
591 : { "vnode", db_vnode_print_cmd, 0, NULL },
592 : { "watches", db_listwatch_cmd, 0, NULL },
593 : #ifdef WITNESS
594 : { "witness", db_witness_display, 0, NULL },
595 : #endif
596 : { NULL, NULL, 0, NULL }
597 : };
598 :
599 : struct db_command db_boot_cmds[] = {
600 : { "sync", db_boot_sync_cmd, 0, 0 },
601 : { "crash", db_boot_crash_cmd, 0, 0 },
602 : { "dump", db_boot_dump_cmd, 0, 0 },
603 : { "halt", db_boot_halt_cmd, 0, 0 },
604 : { "reboot", db_boot_reboot_cmd, 0, 0 },
605 : { "poweroff", db_boot_poweroff_cmd, 0, 0 },
606 : { NULL, }
607 : };
608 :
609 : struct db_command db_command_table[] = {
610 : #ifdef DB_MACHINE_COMMANDS
611 : /* this must be the first entry, if it exists */
612 : { "machine", NULL, 0, NULL},
613 : #endif
614 : { "kill", db_kill_cmd, 0, NULL },
615 : { "print", db_print_cmd, 0, NULL },
616 : { "p", db_print_cmd, 0, NULL },
617 : { "pprint", db_ctf_pprint_cmd, CS_OWN, NULL },
618 : { "examine", db_examine_cmd, CS_SET_DOT, NULL },
619 : { "x", db_examine_cmd, CS_SET_DOT, NULL },
620 : { "search", db_search_cmd, CS_OWN|CS_SET_DOT, NULL },
621 : { "set", db_set_cmd, CS_OWN, NULL },
622 : { "write", db_write_cmd, CS_MORE|CS_SET_DOT, NULL },
623 : { "w", db_write_cmd, CS_MORE|CS_SET_DOT, NULL },
624 : { "delete", db_delete_cmd, 0, NULL },
625 : { "d", db_delete_cmd, 0, NULL },
626 : { "break", db_breakpoint_cmd, 0, NULL },
627 : { "dwatch", db_deletewatch_cmd, 0, NULL },
628 : { "watch", db_watchpoint_cmd, CS_MORE, NULL },
629 : { "step", db_single_step_cmd, 0, NULL },
630 : { "s", db_single_step_cmd, 0, NULL },
631 : { "continue", db_continue_cmd, 0, NULL },
632 : { "c", db_continue_cmd, 0, NULL },
633 : { "until", db_trace_until_call_cmd,0, NULL },
634 : { "next", db_trace_until_matching_cmd,0, NULL },
635 : { "match", db_trace_until_matching_cmd,0, NULL },
636 : { "trace", db_stack_trace_cmd, 0, NULL },
637 : { "bt", db_stack_trace_cmd, 0, NULL },
638 : { "call", db_fncall, CS_OWN, NULL },
639 : { "ps", db_show_all_procs, 0, NULL },
640 : { "callout", db_show_callout, 0, NULL },
641 : { "show", NULL, 0, db_show_cmds },
642 : { "boot", NULL, 0, db_boot_cmds },
643 : { "help", db_help_cmd, 0, NULL },
644 : { "hangman", db_hangman, 0, NULL },
645 : { "dmesg", db_dmesg_cmd, 0, NULL },
646 : { NULL, NULL, 0, NULL }
647 : };
648 :
649 : #ifdef DB_MACHINE_COMMANDS
650 :
651 : /* this function should be called to install the machine dependent
652 : commands. It should be called before the debugger is enabled */
653 0 : void db_machine_commands_install(struct db_command *ptr)
654 : {
655 0 : db_command_table[0].more = ptr;
656 0 : return;
657 : }
658 :
659 : #endif
660 :
661 : struct db_command *db_last_command = NULL;
662 :
663 : void
664 0 : db_help_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
665 : {
666 0 : db_cmd_list(db_command_table);
667 0 : }
668 :
669 : void
670 0 : db_command_loop(void)
671 : {
672 0 : label_t db_jmpbuf;
673 : label_t *savejmp;
674 : extern int db_output_line;
675 :
676 : /*
677 : * Initialize 'prev' and 'next' to dot.
678 : */
679 0 : db_prev = db_dot;
680 0 : db_next = db_dot;
681 :
682 0 : db_cmd_loop_done = 0;
683 :
684 0 : savejmp = db_recover;
685 0 : db_recover = &db_jmpbuf;
686 0 : (void) setjmp(&db_jmpbuf);
687 :
688 0 : while (!db_cmd_loop_done) {
689 :
690 0 : if (db_print_position() != 0)
691 0 : db_printf("\n");
692 0 : db_output_line = 0;
693 :
694 : #ifdef MULTIPROCESSOR
695 0 : db_printf("ddb{%d}> ", CPU_INFO_UNIT(curcpu()));
696 : #else
697 : db_printf("ddb> ");
698 : #endif
699 0 : (void) db_read_line();
700 :
701 0 : db_command(&db_last_command, db_command_table);
702 : }
703 :
704 0 : db_recover = savejmp;
705 0 : }
706 :
707 : void
708 0 : db_error(char *s)
709 : {
710 0 : if (s)
711 0 : db_printf("%s", s);
712 0 : db_flush_lex();
713 0 : if (db_recover != NULL)
714 0 : longjmp(db_recover);
715 0 : }
716 :
717 :
718 : /*
719 : * Call random function:
720 : * !expr(arg,arg,arg)
721 : */
722 : /*ARGSUSED*/
723 : void
724 0 : db_fncall(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
725 : {
726 0 : db_expr_t fn_addr;
727 : #define MAXARGS 11
728 0 : db_expr_t args[MAXARGS];
729 : int nargs = 0;
730 : db_expr_t retval;
731 : db_expr_t (*func)(db_expr_t, ...);
732 : int t;
733 0 : char tmpfmt[28];
734 :
735 0 : if (!db_expression(&fn_addr)) {
736 0 : db_printf("Bad function\n");
737 0 : db_flush_lex();
738 0 : return;
739 : }
740 0 : func = (db_expr_t (*)(db_expr_t, ...)) fn_addr;
741 :
742 0 : t = db_read_token();
743 0 : if (t == tLPAREN) {
744 0 : if (db_expression(&args[0])) {
745 : nargs++;
746 0 : while ((t = db_read_token()) == tCOMMA) {
747 0 : if (nargs == MAXARGS) {
748 0 : db_printf("Too many arguments\n");
749 0 : db_flush_lex();
750 0 : return;
751 : }
752 0 : if (!db_expression(&args[nargs])) {
753 0 : db_printf("Argument missing\n");
754 0 : db_flush_lex();
755 0 : return;
756 : }
757 0 : nargs++;
758 : }
759 0 : db_unread_token(t);
760 0 : }
761 0 : if (db_read_token() != tRPAREN) {
762 0 : db_printf("?\n");
763 0 : db_flush_lex();
764 0 : return;
765 : }
766 : }
767 0 : db_skip_to_eol();
768 :
769 0 : while (nargs < MAXARGS) {
770 0 : args[nargs++] = 0;
771 : }
772 :
773 0 : retval = (*func)(args[0], args[1], args[2], args[3], args[4],
774 0 : args[5], args[6], args[7], args[8], args[9]);
775 0 : db_printf("%s\n", db_format(tmpfmt, sizeof tmpfmt, retval,
776 : DB_FORMAT_N, 1, 0));
777 0 : }
778 :
779 : void
780 0 : db_reboot(int howto)
781 : {
782 0 : spl0();
783 0 : if (!curproc)
784 0 : curproc = &proc0;
785 0 : reboot(howto);
786 : }
787 :
788 : void
789 0 : db_boot_sync_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
790 : {
791 0 : db_reboot(RB_AUTOBOOT | RB_TIMEBAD | RB_USERREQ);
792 0 : }
793 :
794 : void
795 0 : db_boot_crash_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
796 : {
797 0 : db_reboot(RB_NOSYNC | RB_DUMP | RB_TIMEBAD | RB_USERREQ);
798 0 : }
799 :
800 : void
801 0 : db_boot_dump_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
802 : {
803 0 : db_reboot(RB_DUMP | RB_TIMEBAD | RB_USERREQ);
804 0 : }
805 :
806 : void
807 0 : db_boot_halt_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
808 : {
809 0 : db_reboot(RB_NOSYNC | RB_HALT | RB_TIMEBAD | RB_USERREQ);
810 0 : }
811 :
812 : void
813 0 : db_boot_reboot_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
814 : {
815 0 : db_reboot(RB_AUTOBOOT | RB_NOSYNC | RB_TIMEBAD | RB_USERREQ);
816 0 : }
817 :
818 : void
819 0 : db_boot_poweroff_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
820 : {
821 0 : db_reboot(RB_NOSYNC | RB_HALT | RB_POWERDOWN | RB_TIMEBAD | RB_USERREQ);
822 0 : }
823 :
824 : void
825 0 : db_dmesg_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
826 : {
827 : int i, off;
828 : char *p;
829 :
830 0 : if (!msgbufp || msgbufp->msg_magic != MSG_MAGIC)
831 0 : return;
832 0 : off = msgbufp->msg_bufx;
833 0 : if (off > msgbufp->msg_bufs)
834 : off = 0;
835 0 : for (i = 0, p = msgbufp->msg_bufc + off;
836 0 : i < msgbufp->msg_bufs; i++, p++) {
837 0 : if (p >= msgbufp->msg_bufc + msgbufp->msg_bufs)
838 0 : p = msgbufp->msg_bufc;
839 0 : if (*p != '\0')
840 0 : db_putchar(*p);
841 : }
842 0 : db_putchar('\n');
843 0 : }
844 :
845 : void
846 0 : db_stack_trace_cmd(db_expr_t addr, boolean_t have_addr, db_expr_t count,
847 : char *modif)
848 : {
849 0 : db_stack_trace_print(addr, have_addr, count, modif, db_printf);
850 0 : }
851 :
852 : void
853 0 : db_show_regs(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
854 : {
855 : struct db_variable *regp;
856 0 : db_expr_t value, offset;
857 0 : char * name;
858 0 : char tmpfmt[28];
859 :
860 0 : for (regp = db_regs; regp < db_eregs; regp++) {
861 0 : db_read_variable(regp, &value);
862 0 : db_printf("%-12s%s", regp->name, db_format(tmpfmt, sizeof tmpfmt,
863 0 : (long)value, DB_FORMAT_N, 1, sizeof(long) * 3));
864 0 : db_find_xtrn_sym_and_offset((db_addr_t)value, &name, &offset);
865 0 : if (name != 0 && offset <= db_maxoff && offset != value) {
866 0 : db_printf("\t%s", name);
867 0 : if (offset != 0)
868 0 : db_printf("+%s", db_format(tmpfmt, sizeof tmpfmt,
869 : (long)offset, DB_FORMAT_R, 1, 0));
870 : }
871 0 : db_printf("\n");
872 : }
873 0 : db_print_loc_and_inst(PC_REGS(&ddb_regs));
874 0 : }
875 :
876 : /*
877 : * Write to file.
878 : */
879 : /*ARGSUSED*/
880 : void
881 0 : db_write_cmd(db_expr_t address, boolean_t have_addr, db_expr_t count,
882 : char *modif)
883 : {
884 : db_addr_t addr;
885 : db_expr_t old_value;
886 0 : db_expr_t new_value;
887 : int size;
888 : boolean_t wrote_one = FALSE;
889 0 : char tmpfmt[28];
890 :
891 : addr = (db_addr_t) address;
892 :
893 0 : switch (modif[0]) {
894 : case 'b':
895 : size = 1;
896 0 : break;
897 : case 'h':
898 : size = 2;
899 0 : break;
900 : case 'l':
901 : case '\0':
902 : size = 4;
903 0 : break;
904 : #ifdef __LP64__
905 : case 'q':
906 : size = 8;
907 0 : break;
908 : #endif
909 : default:
910 : size = -1;
911 0 : db_error("Unknown size\n");
912 : /*NOTREACHED*/
913 0 : }
914 :
915 0 : while (db_expression(&new_value)) {
916 0 : old_value = db_get_value(addr, size, FALSE);
917 0 : db_printsym(addr, DB_STGY_ANY, db_printf);
918 0 : db_printf("\t\t%s\t", db_format(tmpfmt, sizeof tmpfmt,
919 : old_value, DB_FORMAT_N, 0, 8));
920 0 : db_printf("=\t%s\n", db_format(tmpfmt, sizeof tmpfmt,
921 0 : new_value, DB_FORMAT_N, 0, 8));
922 0 : db_put_value(addr, size, new_value);
923 0 : addr += size;
924 :
925 : wrote_one = TRUE;
926 : }
927 :
928 0 : if (!wrote_one) {
929 0 : db_error("Nothing written.\n");
930 : /*NOTREACHED*/
931 0 : }
932 :
933 0 : db_next = addr;
934 0 : db_prev = addr - size;
935 :
936 0 : db_skip_to_eol();
937 0 : }
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