1 /* $OpenBSD: db_command.c,v 1.101 2024/05/13 01:15:50 jsg 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 <netinet/ip_ipsp.h>
60 #include <uvm/uvm_ddb.h>
61
62 /*
63 * Exported global variables
64 */
65 int db_cmd_loop_done;
66 label_t *db_recover;
67
68 /*
69 * if 'ed' style: 'dot' is set at start of last item printed,
70 * and '+' points to next line.
71 * Otherwise: 'dot' points to next item, '..' points to last.
72 */
73 int db_ed_style = 1;
74
75 vaddr_t db_dot; /* current location */
76 vaddr_t db_last_addr; /* last explicit address typed */
77 vaddr_t db_prev; /* last address examined
78 or written */
79 vaddr_t db_next; /* next address to be examined
80 or written */
81
82 int db_cmd_search(char *, const struct db_command *,
83 const struct db_command **);
84 void db_cmd_list(const struct db_command *);
85 void db_ctf_pprint_cmd(db_expr_t, int, db_expr_t,char *);
86 void db_map_print_cmd(db_expr_t, int, db_expr_t, char *);
87 void db_buf_print_cmd(db_expr_t, int, db_expr_t, char *);
88 void db_malloc_print_cmd(db_expr_t, int, db_expr_t, char *);
89 void db_mbuf_print_cmd(db_expr_t, int, db_expr_t, char *);
90 void db_mount_print_cmd(db_expr_t, int, db_expr_t, char *);
91 void db_show_all_mounts(db_expr_t, int, db_expr_t, char *);
92 void db_show_all_vnodes(db_expr_t, int, db_expr_t, char *);
93 void db_show_all_bufs(db_expr_t, int, db_expr_t, char *);
94 void db_show_all_tdbs(db_expr_t, int, db_expr_t, char *);
95 void db_object_print_cmd(db_expr_t, int, db_expr_t, char *);
96 void db_page_print_cmd(db_expr_t, int, db_expr_t, char *);
97 void db_extent_print_cmd(db_expr_t, int, db_expr_t, char *);
98 void db_pool_print_cmd(db_expr_t, int, db_expr_t, char *);
99 void db_proc_print_cmd(db_expr_t, int, db_expr_t, char *);
100 void db_uvmexp_print_cmd(db_expr_t, int, db_expr_t, char *);
101 void db_tdb_print_cmd(db_expr_t, int, db_expr_t, char *);
102 void db_vnode_print_cmd(db_expr_t, int, db_expr_t, char *);
103 void db_nfsreq_print_cmd(db_expr_t, int, db_expr_t, char *);
104 void db_nfsnode_print_cmd(db_expr_t, int, db_expr_t, char *);
105 void db_swap_print_cmd(db_expr_t, int, db_expr_t, char *);
106 void db_help_cmd(db_expr_t, int, db_expr_t, char *);
107 void db_fncall(db_expr_t, int, db_expr_t, char *);
108 void db_boot_sync_cmd(db_expr_t, int, db_expr_t, char *);
109 void db_boot_crash_cmd(db_expr_t, int, db_expr_t, char *);
110 void db_boot_dump_cmd(db_expr_t, int, db_expr_t, char *);
111 void db_boot_halt_cmd(db_expr_t, int, db_expr_t, char *);
112 void db_boot_reboot_cmd(db_expr_t, int, db_expr_t, char *);
113 void db_boot_poweroff_cmd(db_expr_t, int, db_expr_t, char *);
114 void db_stack_trace_cmd(db_expr_t, int, db_expr_t, char *);
115 void db_dmesg_cmd(db_expr_t, int, db_expr_t, char *);
116 void db_show_panic_cmd(db_expr_t, int, db_expr_t, char *);
117 void db_bcstats_print_cmd(db_expr_t, int, db_expr_t, char *);
118 void db_ctf_show_struct(db_expr_t, int, db_expr_t, char *);
119 void db_show_regs(db_expr_t, int, db_expr_t, char *);
120 void db_write_cmd(db_expr_t, int, db_expr_t, char *);
121 void db_witness_display(db_expr_t, int, db_expr_t, char *);
122 void db_witness_list(db_expr_t, int, db_expr_t, char *);
123 void db_witness_list_all(db_expr_t, int, db_expr_t, char *);
124
125
126 /*
127 * Utility routine - discard tokens through end-of-line.
128 */
129 void
db_skip_to_eol(void)130 db_skip_to_eol(void)
131 {
132 int t;
133 do {
134 t = db_read_token();
135 } while (t != tEOL);
136 }
137
138 /*
139 * Results of command search.
140 */
141 #define CMD_UNIQUE 0
142 #define CMD_FOUND 1
143 #define CMD_NONE 2
144 #define CMD_AMBIGUOUS 3
145
146 /*
147 * Search for command prefix.
148 */
149 int
db_cmd_search(char * name,const struct db_command * table,const struct db_command ** cmdp)150 db_cmd_search(char *name, const struct db_command *table,
151 const struct db_command **cmdp)
152 {
153 const struct db_command *cmd;
154 int result = CMD_NONE;
155
156 for (cmd = table; cmd->name != 0; cmd++) {
157 char *lp = name, *rp = cmd->name;
158 int c;
159
160 while ((c = *lp) == *rp) {
161 if (c == 0) {
162 /* complete match */
163 *cmdp = cmd;
164 return (CMD_UNIQUE);
165 }
166 lp++;
167 rp++;
168 }
169 if (c == 0) {
170 /* end of name, not end of command - partial match */
171 if (result == CMD_FOUND) {
172 result = CMD_AMBIGUOUS;
173 /* but keep looking for a full match -
174 this lets us match single letters */
175 } else {
176 *cmdp = cmd;
177 result = CMD_FOUND;
178 }
179 }
180 }
181 return (result);
182 }
183
184 void
db_cmd_list(const struct db_command * table)185 db_cmd_list(const struct db_command *table)
186 {
187 const struct db_command *cmd;
188
189 for (cmd = table; cmd->name != 0; cmd++) {
190 db_printf("%-12s", cmd->name);
191 db_end_line(12);
192 }
193 }
194
195 void
db_command(const struct db_command ** last_cmdp,const struct db_command * cmd_table)196 db_command(const struct db_command **last_cmdp,
197 const struct db_command *cmd_table)
198 {
199 const struct db_command *cmd;
200 char modif[TOK_STRING_SIZE];
201 db_expr_t addr, count;
202 int t, result, have_addr = 0;
203
204 t = db_read_token();
205 if (t == tEOL) {
206 /* empty line repeats last command, at 'next' */
207 cmd = *last_cmdp;
208 addr = (db_expr_t)db_next;
209 have_addr = 0;
210 count = 1;
211 modif[0] = '\0';
212 } else if (t == tEXCL) {
213 db_fncall(0, 0, 0, NULL);
214 return;
215 } else if (t != tIDENT) {
216 db_printf("?\n");
217 db_flush_lex();
218 return;
219 } else {
220 /* Search for command */
221 while (cmd_table) {
222 result = db_cmd_search(db_tok_string,
223 cmd_table, &cmd);
224 switch (result) {
225 case CMD_NONE:
226 db_printf("No such command\n");
227 db_flush_lex();
228 return;
229 case CMD_AMBIGUOUS:
230 db_printf("Ambiguous\n");
231 db_flush_lex();
232 return;
233 default:
234 break;
235 }
236 if ((cmd_table = cmd->more) != 0) {
237 t = db_read_token();
238 if (t != tIDENT) {
239 db_cmd_list(cmd_table);
240 db_flush_lex();
241 return;
242 }
243 }
244 }
245
246 if ((cmd->flag & CS_OWN) == 0) {
247 /*
248 * Standard syntax:
249 * command [/modifier] [addr] [,count]
250 */
251 t = db_read_token();
252 if (t == tSLASH) {
253 t = db_read_token();
254 if (t != tIDENT) {
255 db_printf("Bad modifier\n");
256 db_flush_lex();
257 return;
258 }
259 db_strlcpy(modif, db_tok_string, sizeof(modif));
260 } else {
261 db_unread_token(t);
262 modif[0] = '\0';
263 }
264
265 if (db_expression(&addr)) {
266 db_dot = (vaddr_t) addr;
267 db_last_addr = db_dot;
268 have_addr = 1;
269 } else {
270 addr = (db_expr_t) db_dot;
271 have_addr = 0;
272 }
273 t = db_read_token();
274 if (t == tCOMMA) {
275 if (!db_expression(&count)) {
276 db_printf("Count missing\n");
277 db_flush_lex();
278 return;
279 }
280 } else {
281 db_unread_token(t);
282 count = -1;
283 }
284 if ((cmd->flag & CS_MORE) == 0)
285 db_skip_to_eol();
286 }
287 }
288 *last_cmdp = cmd;
289 if (cmd != 0) {
290 /* Execute the command. */
291 (*cmd->fcn)(addr, have_addr, count, modif);
292
293 if (cmd->flag & CS_SET_DOT) {
294 /*
295 * If command changes dot, set dot to
296 * previous address displayed (if 'ed' style).
297 */
298 if (db_ed_style)
299 db_dot = db_prev;
300 else
301 db_dot = db_next;
302 }
303 } else {
304 /*
305 * If command does not change dot,
306 * set 'next' location to be the same.
307 */
308 db_next = db_dot;
309 }
310 }
311
312 void
db_buf_print_cmd(db_expr_t addr,int have_addr,db_expr_t count,char * modif)313 db_buf_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
314 {
315 int full = 0;
316
317 if (modif[0] == 'f')
318 full = 1;
319
320 vfs_buf_print((void *) addr, full, db_printf);
321 }
322
323 void
db_map_print_cmd(db_expr_t addr,int have_addr,db_expr_t count,char * modif)324 db_map_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
325 {
326 int full = 0;
327
328 if (modif[0] == 'f')
329 full = 1;
330
331 uvm_map_printit((struct vm_map *) addr, full, db_printf);
332 }
333
334 void
db_malloc_print_cmd(db_expr_t addr,int have_addr,db_expr_t count,char * modif)335 db_malloc_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
336 {
337 malloc_printit(db_printf);
338 }
339
340 void
db_mbuf_print_cmd(db_expr_t addr,int have_addr,db_expr_t count,char * modif)341 db_mbuf_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
342 {
343 m_print((void *)addr, db_printf);
344 }
345
346 void
db_socket_print_cmd(db_expr_t addr,int have_addr,db_expr_t count,char * modif)347 db_socket_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
348 {
349 so_print((void *)addr, db_printf);
350 }
351
352 void
db_mount_print_cmd(db_expr_t addr,int have_addr,db_expr_t count,char * modif)353 db_mount_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
354 {
355 int full = 0;
356
357 if (modif[0] == 'f')
358 full = 1;
359
360 vfs_mount_print((struct mount *) addr, full, db_printf);
361 }
362
363 void
db_show_all_mounts(db_expr_t addr,int have_addr,db_expr_t count,char * modif)364 db_show_all_mounts(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
365 {
366 int full = 0;
367 struct mount *mp;
368
369 if (modif[0] == 'f')
370 full = 1;
371
372 TAILQ_FOREACH(mp, &mountlist, mnt_list) {
373 db_printf("mountpoint %p\n", mp);
374 vfs_mount_print(mp, full, db_printf);
375 }
376 }
377
378 extern struct pool vnode_pool;
379 void
db_show_all_vnodes(db_expr_t addr,int have_addr,db_expr_t count,char * modif)380 db_show_all_vnodes(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
381 {
382 int full = 0;
383
384 if (modif[0] == 'f')
385 full = 1;
386
387 pool_walk(&vnode_pool, full, db_printf, vfs_vnode_print);
388 }
389
390 extern struct pool bufpool;
391 void
db_show_all_bufs(db_expr_t addr,int have_addr,db_expr_t count,char * modif)392 db_show_all_bufs(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
393 {
394 int full = 0;
395
396 if (modif[0] == 'f')
397 full = 1;
398
399 pool_walk(&bufpool, full, db_printf, vfs_buf_print);
400 }
401
402 #ifdef IPSEC
403 void
db_show_all_tdbs(db_expr_t addr,int have_addr,db_expr_t count,char * modif)404 db_show_all_tdbs(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
405 {
406 int full = 0;
407
408 if (modif[0] == 'f')
409 full = 1;
410
411 pool_walk(&tdb_pool, full, db_printf, tdb_printit);
412 }
413 #endif
414
415 void
db_show_all_routes(db_expr_t addr,int have_addr,db_expr_t count,char * modif)416 db_show_all_routes(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
417 {
418 u_int rtableid = 0;
419
420 if (have_addr)
421 rtableid = addr;
422 if (count == -1)
423 count = 1;
424
425 while (count--) {
426 if (modif[0] != 'I')
427 db_show_rtable(AF_INET, rtableid);
428 if (modif[0] != 'i')
429 db_show_rtable(AF_INET6, rtableid);
430 rtableid++;
431 }
432 }
433
434 void
db_show_route(db_expr_t addr,int have_addr,db_expr_t count,char * modif)435 db_show_route(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
436 {
437 db_show_rtentry((void *)addr, NULL, -1);
438 }
439
440 void
db_object_print_cmd(db_expr_t addr,int have_addr,db_expr_t count,char * modif)441 db_object_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
442 {
443 int full = 0;
444
445 if (modif[0] == 'f')
446 full = 1;
447
448 uvm_object_printit((struct uvm_object *) addr, full, db_printf);
449 }
450
451 void
db_page_print_cmd(db_expr_t addr,int have_addr,db_expr_t count,char * modif)452 db_page_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
453 {
454 int full = 0;
455
456 if (modif[0] == 'f')
457 full = 1;
458
459 uvm_page_printit((struct vm_page *) addr, full, db_printf);
460 }
461
462 void
db_vnode_print_cmd(db_expr_t addr,int have_addr,db_expr_t count,char * modif)463 db_vnode_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
464 {
465 int full = 0;
466
467 if (modif[0] == 'f')
468 full = 1;
469
470 vfs_vnode_print((void *)addr, full, db_printf);
471 }
472
473 #ifdef NFSCLIENT
474 void
db_nfsreq_print_cmd(db_expr_t addr,int have_addr,db_expr_t count,char * modif)475 db_nfsreq_print_cmd(db_expr_t addr, int have_addr, db_expr_t count,
476 char *modif)
477 {
478 int full = 0;
479
480 if (modif[0] == 'f')
481 full = 1;
482
483 nfs_request_print((void *)addr, full, db_printf);
484 }
485
486 void
db_nfsnode_print_cmd(db_expr_t addr,int have_addr,db_expr_t count,char * modif)487 db_nfsnode_print_cmd(db_expr_t addr, int have_addr, db_expr_t count,
488 char *modif)
489 {
490 int full = 0;
491
492 if (modif[0] == 'f')
493 full = 1;
494
495 nfs_node_print((void *)addr, full, db_printf);
496 }
497 #endif
498
499 void
db_swap_print_cmd(db_expr_t addr,int have_addr,db_expr_t count,char * modif)500 db_swap_print_cmd(db_expr_t addr, int have_addr, db_expr_t count,
501 char *modif)
502 {
503 swap_print_all(db_printf);
504 }
505
506 void
db_show_panic_cmd(db_expr_t addr,int have_addr,db_expr_t count,char * modif)507 db_show_panic_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
508 {
509 struct cpu_info *ci;
510 char *prefix;
511 CPU_INFO_ITERATOR cii;
512 int panicked = 0;
513
514 CPU_INFO_FOREACH(cii, ci) {
515 if (ci->ci_panicbuf[0] != '\0') {
516 prefix = (panicstr == ci->ci_panicbuf) ? "*" : " ";
517 db_printf("%scpu%d: %s\n",
518 prefix, CPU_INFO_UNIT(ci), ci->ci_panicbuf);
519 panicked = 1;
520 }
521 }
522 if (!panicked)
523 db_printf("the kernel did not panic\n"); /* yet */
524 }
525
526 void
db_extent_print_cmd(db_expr_t addr,int have_addr,db_expr_t count,char * modif)527 db_extent_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
528 {
529 extent_print_all();
530 }
531
532 void
db_pool_print_cmd(db_expr_t addr,int have_addr,db_expr_t count,char * modif)533 db_pool_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
534 {
535 pool_printit((struct pool *)addr, modif, db_printf);
536 }
537
538 void
db_proc_print_cmd(db_expr_t addr,int have_addr,db_expr_t count,char * modif)539 db_proc_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
540 {
541 if (!have_addr)
542 addr = (db_expr_t)curproc;
543 if (modif[0] == 't') {
544 addr = (db_expr_t)tfind((pid_t)addr);
545 if (addr == 0) {
546 db_printf("not found\n");
547 return;
548 }
549 }
550
551 proc_printit((struct proc *)addr, modif, db_printf);
552 }
553
554 #ifdef IPSEC
555 void
db_tdb_print_cmd(db_expr_t addr,int have_addr,db_expr_t count,char * modif)556 db_tdb_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
557 {
558 int full = 0;
559
560 if (modif[0] == 'f')
561 full = 1;
562
563 tdb_printit((void *)addr, full, db_printf);
564 }
565 #endif
566
567 void
db_uvmexp_print_cmd(db_expr_t addr,int have_addr,db_expr_t count,char * modif)568 db_uvmexp_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
569 {
570 uvmexp_print(db_printf);
571 }
572
573 void bcstats_print(int (*)(const char *, ...));
574
575 void
db_bcstats_print_cmd(db_expr_t addr,int have_addr,db_expr_t count,char * modif)576 db_bcstats_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
577 {
578 bcstats_print(db_printf);
579 }
580
581 /*
582 * 'show' commands
583 */
584
585 const struct db_command db_show_all_cmds[] = {
586 { "procs", db_show_all_procs, 0, NULL },
587 { "callout", db_show_callout, 0, NULL },
588 { "clockintr", db_show_all_clockintr, 0, NULL },
589 { "pools", db_show_all_pools, 0, NULL },
590 { "mounts", db_show_all_mounts, 0, NULL },
591 { "vnodes", db_show_all_vnodes, 0, NULL },
592 { "bufs", db_show_all_bufs, 0, NULL },
593 { "routes", db_show_all_routes, 0, NULL },
594 #ifdef NFSCLIENT
595 { "nfsreqs", db_show_all_nfsreqs, 0, NULL },
596 { "nfsnodes", db_show_all_nfsnodes, 0, NULL },
597 #endif
598 #ifdef IPSEC
599 { "tdbs", db_show_all_tdbs, 0, NULL },
600 #endif
601 #ifdef WITNESS
602 { "locks", db_witness_list_all, 0, NULL },
603 #endif
604 { NULL, NULL, 0, NULL }
605 };
606
607 const struct db_command db_show_cmds[] = {
608 { "all", NULL, 0, db_show_all_cmds },
609 { "bcstats", db_bcstats_print_cmd, 0, NULL },
610 { "breaks", db_listbreak_cmd, 0, NULL },
611 { "buf", db_buf_print_cmd, 0, NULL },
612 { "extents", db_extent_print_cmd, 0, NULL },
613 #ifdef WITNESS
614 { "locks", db_witness_list, 0, NULL },
615 #endif
616 { "malloc", db_malloc_print_cmd, 0, NULL },
617 { "map", db_map_print_cmd, 0, NULL },
618 { "mbuf", db_mbuf_print_cmd, 0, NULL },
619 { "mount", db_mount_print_cmd, 0, NULL },
620 #ifdef NFSCLIENT
621 { "nfsreq", db_nfsreq_print_cmd, 0, NULL },
622 { "nfsnode", db_nfsnode_print_cmd, 0, NULL },
623 #endif
624 { "object", db_object_print_cmd, 0, NULL },
625 { "page", db_page_print_cmd, 0, NULL },
626 { "panic", db_show_panic_cmd, 0, NULL },
627 { "pool", db_pool_print_cmd, 0, NULL },
628 { "proc", db_proc_print_cmd, 0, NULL },
629 { "registers", db_show_regs, 0, NULL },
630 { "route", db_show_route, 0, NULL },
631 { "socket", db_socket_print_cmd, 0, NULL },
632 { "struct", db_ctf_show_struct, CS_OWN, NULL },
633 { "swap", db_swap_print_cmd, 0, NULL },
634 #ifdef IPSEC
635 { "tdb", db_tdb_print_cmd, 0, NULL },
636 #endif
637 { "uvmexp", db_uvmexp_print_cmd, 0, NULL },
638 { "vnode", db_vnode_print_cmd, 0, NULL },
639 { "watches", db_listwatch_cmd, 0, NULL },
640 #ifdef WITNESS
641 { "witness", db_witness_display, 0, NULL },
642 #endif
643 { NULL, NULL, 0, NULL }
644 };
645
646 const struct db_command db_boot_cmds[] = {
647 { "sync", db_boot_sync_cmd, 0, 0 },
648 { "crash", db_boot_crash_cmd, 0, 0 },
649 { "dump", db_boot_dump_cmd, 0, 0 },
650 { "halt", db_boot_halt_cmd, 0, 0 },
651 { "reboot", db_boot_reboot_cmd, 0, 0 },
652 { "poweroff", db_boot_poweroff_cmd, 0, 0 },
653 { NULL, }
654 };
655
656 const struct db_command db_command_table[] = {
657 #ifdef DB_MACHINE_COMMANDS
658 /* this must be the first entry, if it exists */
659 { "machine", NULL, 0, db_machine_command_table },
660 #endif
661 { "kill", db_kill_cmd, 0, NULL },
662 { "print", db_print_cmd, 0, NULL },
663 { "p", db_print_cmd, 0, NULL },
664 { "pprint", db_ctf_pprint_cmd, CS_OWN, NULL },
665 { "examine", db_examine_cmd, CS_SET_DOT, NULL },
666 { "x", db_examine_cmd, CS_SET_DOT, NULL },
667 { "search", db_search_cmd, CS_OWN|CS_SET_DOT, NULL },
668 { "set", db_set_cmd, CS_OWN, NULL },
669 { "write", db_write_cmd, CS_MORE|CS_SET_DOT, NULL },
670 { "w", db_write_cmd, CS_MORE|CS_SET_DOT, NULL },
671 { "delete", db_delete_cmd, 0, NULL },
672 { "d", db_delete_cmd, 0, NULL },
673 { "break", db_breakpoint_cmd, 0, NULL },
674 { "dwatch", db_deletewatch_cmd, 0, NULL },
675 { "watch", db_watchpoint_cmd, CS_MORE, NULL },
676 { "step", db_single_step_cmd, 0, NULL },
677 { "s", db_single_step_cmd, 0, NULL },
678 { "continue", db_continue_cmd, 0, NULL },
679 { "c", db_continue_cmd, 0, NULL },
680 { "until", db_trace_until_call_cmd,0, NULL },
681 { "next", db_trace_until_matching_cmd,0, NULL },
682 { "match", db_trace_until_matching_cmd,0, NULL },
683 { "trace", db_stack_trace_cmd, 0, NULL },
684 { "bt", db_stack_trace_cmd, 0, NULL },
685 { "call", db_fncall, CS_OWN, NULL },
686 { "ps", db_show_all_procs, 0, NULL },
687 { "callout", db_show_callout, 0, NULL },
688 { "reboot", db_boot_reboot_cmd, 0, NULL },
689 { "show", NULL, 0, db_show_cmds },
690 { "boot", NULL, 0, db_boot_cmds },
691 { "help", db_help_cmd, 0, NULL },
692 { "hangman", db_hangman, 0, NULL },
693 { "dmesg", db_dmesg_cmd, 0, NULL },
694 { NULL, NULL, 0, NULL }
695 };
696
697 const struct db_command *db_last_command = NULL;
698
699 void
db_help_cmd(db_expr_t addr,int haddr,db_expr_t count,char * modif)700 db_help_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
701 {
702 db_cmd_list(db_command_table);
703 }
704
705 void
db_command_loop(void)706 db_command_loop(void)
707 {
708 label_t db_jmpbuf;
709 label_t *savejmp;
710 extern int db_output_line;
711
712 /*
713 * Initialize 'prev' and 'next' to dot.
714 */
715 db_prev = db_dot;
716 db_next = db_dot;
717
718 db_cmd_loop_done = 0;
719
720 savejmp = db_recover;
721 db_recover = &db_jmpbuf;
722 (void) setjmp(&db_jmpbuf);
723
724 while (!db_cmd_loop_done) {
725
726 if (db_print_position() != 0)
727 db_printf("\n");
728 db_output_line = 0;
729
730 #ifdef MULTIPROCESSOR
731 db_printf("ddb{%d}> ", CPU_INFO_UNIT(curcpu()));
732 #else
733 db_printf("ddb> ");
734 #endif
735 (void) db_read_line();
736
737 db_command(&db_last_command, db_command_table);
738 }
739
740 db_recover = savejmp;
741 }
742
743 void
db_error(char * s)744 db_error(char *s)
745 {
746 if (s)
747 db_printf("%s", s);
748 db_flush_lex();
749 if (db_recover != NULL)
750 longjmp(db_recover);
751 }
752
753
754 /*
755 * Call random function:
756 * !expr(arg,arg,arg)
757 */
758 void
db_fncall(db_expr_t addr,int have_addr,db_expr_t count,char * modif)759 db_fncall(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
760 {
761 db_expr_t fn_addr;
762 #define MAXARGS 11
763 db_expr_t args[MAXARGS];
764 int nargs = 0;
765 db_expr_t retval;
766 db_expr_t (*func)(db_expr_t, ...);
767 int t;
768 char tmpfmt[28];
769
770 if (!db_expression(&fn_addr)) {
771 db_printf("Bad function\n");
772 db_flush_lex();
773 return;
774 }
775 func = (db_expr_t (*)(db_expr_t, ...)) fn_addr;
776
777 t = db_read_token();
778 if (t == tLPAREN) {
779 if (db_expression(&args[0])) {
780 nargs++;
781 while ((t = db_read_token()) == tCOMMA) {
782 if (nargs == MAXARGS) {
783 db_printf("Too many arguments\n");
784 db_flush_lex();
785 return;
786 }
787 if (!db_expression(&args[nargs])) {
788 db_printf("Argument missing\n");
789 db_flush_lex();
790 return;
791 }
792 nargs++;
793 }
794 db_unread_token(t);
795 }
796 if (db_read_token() != tRPAREN) {
797 db_printf("?\n");
798 db_flush_lex();
799 return;
800 }
801 }
802 db_skip_to_eol();
803
804 while (nargs < MAXARGS)
805 args[nargs++] = 0;
806
807 retval = (*func)(args[0], args[1], args[2], args[3], args[4],
808 args[5], args[6], args[7], args[8], args[9]);
809 db_printf("%s\n", db_format(tmpfmt, sizeof tmpfmt, retval,
810 DB_FORMAT_N, 1, 0));
811 }
812
813 void
db_reboot(int howto)814 db_reboot(int howto)
815 {
816 spl0();
817 if (!curproc)
818 curproc = &proc0;
819 reboot(howto);
820 }
821
822 void
db_boot_sync_cmd(db_expr_t addr,int haddr,db_expr_t count,char * modif)823 db_boot_sync_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
824 {
825 db_reboot(RB_AUTOBOOT | RB_TIMEBAD | RB_USERREQ);
826 }
827
828 void
db_boot_crash_cmd(db_expr_t addr,int haddr,db_expr_t count,char * modif)829 db_boot_crash_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
830 {
831 db_reboot(RB_NOSYNC | RB_DUMP | RB_TIMEBAD | RB_USERREQ);
832 }
833
834 void
db_boot_dump_cmd(db_expr_t addr,int haddr,db_expr_t count,char * modif)835 db_boot_dump_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
836 {
837 db_reboot(RB_DUMP | RB_TIMEBAD | RB_USERREQ);
838 }
839
840 void
db_boot_halt_cmd(db_expr_t addr,int haddr,db_expr_t count,char * modif)841 db_boot_halt_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
842 {
843 db_reboot(RB_NOSYNC | RB_HALT | RB_TIMEBAD | RB_USERREQ);
844 }
845
846 void
db_boot_reboot_cmd(db_expr_t addr,int haddr,db_expr_t count,char * modif)847 db_boot_reboot_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
848 {
849 boot(RB_RESET | RB_AUTOBOOT | RB_NOSYNC | RB_TIMEBAD | RB_USERREQ);
850 }
851
852 void
db_boot_poweroff_cmd(db_expr_t addr,int haddr,db_expr_t count,char * modif)853 db_boot_poweroff_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
854 {
855 db_reboot(RB_NOSYNC | RB_HALT | RB_POWERDOWN | RB_TIMEBAD | RB_USERREQ);
856 }
857
858 void
db_dmesg_cmd(db_expr_t addr,int haddr,db_expr_t count,char * modif)859 db_dmesg_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
860 {
861 int i, off;
862 char *p;
863
864 if (!msgbufp || msgbufp->msg_magic != MSG_MAGIC)
865 return;
866 off = msgbufp->msg_bufx;
867 if (off > msgbufp->msg_bufs)
868 off = 0;
869 for (i = 0, p = msgbufp->msg_bufc + off;
870 i < msgbufp->msg_bufs; i++, p++) {
871 if (p >= msgbufp->msg_bufc + msgbufp->msg_bufs)
872 p = msgbufp->msg_bufc;
873 if (*p != '\0')
874 db_putchar(*p);
875 }
876 db_putchar('\n');
877 }
878
879 void
db_stack_trace_cmd(db_expr_t addr,int have_addr,db_expr_t count,char * modif)880 db_stack_trace_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
881 {
882 db_stack_trace_print(addr, have_addr, count, modif, db_printf);
883 }
884
885 void
db_show_regs(db_expr_t addr,int have_addr,db_expr_t count,char * modif)886 db_show_regs(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
887 {
888 struct db_variable *regp;
889 db_expr_t value, offset;
890 char * name;
891 char tmpfmt[28];
892
893 for (regp = db_regs; regp < db_eregs; regp++) {
894 db_read_variable(regp, &value);
895 db_printf("%-12s%s", regp->name,
896 db_format(tmpfmt, sizeof tmpfmt,
897 (long)value, DB_FORMAT_N, 1, sizeof(long) * 3));
898 db_find_xtrn_sym_and_offset((vaddr_t)value, &name, &offset);
899 if (name != 0 && offset <= db_maxoff && offset != value) {
900 db_printf("\t%s", name);
901 if (offset != 0)
902 db_printf("+%s",
903 db_format(tmpfmt, sizeof tmpfmt,
904 (long)offset, DB_FORMAT_R, 1, 0));
905 }
906 db_printf("\n");
907 }
908 db_print_loc_and_inst(PC_REGS(&ddb_regs));
909 }
910
911 /*
912 * Write to file.
913 */
914 void
db_write_cmd(db_expr_t address,int have_addr,db_expr_t count,char * modif)915 db_write_cmd(db_expr_t address, int have_addr, db_expr_t count, char *modif)
916 {
917 vaddr_t addr;
918 db_expr_t old_value;
919 db_expr_t new_value;
920 int size, wrote_one = 0;
921 char tmpfmt[28];
922
923 addr = (vaddr_t) address;
924
925 switch (modif[0]) {
926 case 'b':
927 size = 1;
928 break;
929 case 'h':
930 size = 2;
931 break;
932 case 'l':
933 case '\0':
934 size = 4;
935 break;
936 #ifdef __LP64__
937 case 'q':
938 size = 8;
939 break;
940 #endif
941 default:
942 size = -1;
943 db_error("Unknown size\n");
944 /*NOTREACHED*/
945 }
946
947 while (db_expression(&new_value)) {
948 old_value = db_get_value(addr, size, 0);
949 db_printsym(addr, DB_STGY_ANY, db_printf);
950 db_printf("\t\t%s\t", db_format(tmpfmt, sizeof tmpfmt,
951 old_value, DB_FORMAT_N, 0, 8));
952 db_printf("=\t%s\n", db_format(tmpfmt, sizeof tmpfmt,
953 new_value, DB_FORMAT_N, 0, 8));
954 db_put_value(addr, size, new_value);
955 addr += size;
956
957 wrote_one = 1;
958 }
959
960 if (!wrote_one) {
961 db_error("Nothing written.\n");
962 /*NOTREACHED*/
963 }
964
965 db_next = addr;
966 db_prev = addr - size;
967
968 db_skip_to_eol();
969 }
970