db_command.c revision 1.96
1 /* $NetBSD: db_command.c,v 1.96 2007/04/30 14:44:30 rmind Exp $ */ 2 3 /* 4 * Mach Operating System 5 * Copyright (c) 1991,1990 Carnegie Mellon University 6 * All Rights Reserved. 7 * 8 * Permission to use, copy, modify and distribute this software and its 9 * documentation is hereby granted, provided that both the copyright 10 * notice and this permission notice appear in all copies of the 11 * software, derivative works or modified versions, and any portions 12 * thereof, and that both notices appear in supporting documentation. 13 * 14 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 15 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 16 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 17 * 18 * Carnegie Mellon requests users of this software to return to 19 * 20 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 21 * School of Computer Science 22 * Carnegie Mellon University 23 * Pittsburgh PA 15213-3890 24 * 25 * any improvements or extensions that they make and grant Carnegie the 26 * rights to redistribute these changes. 27 */ 28 29 /* 30 * Command dispatcher. 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: db_command.c,v 1.96 2007/04/30 14:44:30 rmind Exp $"); 35 36 #include "opt_ddb.h" 37 #include "opt_kgdb.h" 38 #include "opt_inet.h" 39 #include "opt_ddbparam.h" 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/reboot.h> 44 #include <sys/device.h> 45 #include <sys/malloc.h> 46 #include <sys/mbuf.h> 47 #include <sys/namei.h> 48 #include <sys/pool.h> 49 #include <sys/proc.h> 50 #include <sys/vnode.h> 51 #include <sys/lockdebug.h> 52 #include <sys/sleepq.h> 53 54 #include <machine/db_machdep.h> /* type definitions */ 55 56 #if defined(_KERNEL_OPT) 57 #include "opt_multiprocessor.h" 58 #endif 59 #ifdef MULTIPROCESSOR 60 #include <machine/cpu.h> 61 #endif 62 63 #include <ddb/db_lex.h> 64 #include <ddb/db_output.h> 65 #include <ddb/db_command.h> 66 #include <ddb/db_break.h> 67 #include <ddb/db_watch.h> 68 #include <ddb/db_run.h> 69 #include <ddb/db_variables.h> 70 #include <ddb/db_interface.h> 71 #include <ddb/db_sym.h> 72 #include <ddb/db_extern.h> 73 74 #include <uvm/uvm_extern.h> 75 #include <uvm/uvm_ddb.h> 76 77 #include "arp.h" 78 79 /* 80 * Results of command search. 81 */ 82 #define CMD_UNIQUE 0 83 #define CMD_FOUND 1 84 #define CMD_NONE 2 85 #define CMD_AMBIGUOUS 3 86 #define CMD_HELP 4 87 88 /* 89 * Exported global variables 90 */ 91 bool db_cmd_loop_done; 92 label_t *db_recover; 93 db_addr_t db_dot; 94 db_addr_t db_last_addr; 95 db_addr_t db_prev; 96 db_addr_t db_next; 97 98 /* 99 * if 'ed' style: 'dot' is set at start of last item printed, 100 * and '+' points to next line. 101 * Otherwise: 'dot' points to next item, '..' points to last. 102 */ 103 static bool db_ed_style = true; 104 105 static void db_buf_print_cmd(db_expr_t, bool, db_expr_t, const char *); 106 static void db_cmd_list(const struct db_command *); 107 static int db_cmd_search(const char *, const struct db_command *, 108 const struct db_command **); 109 static void db_command(const struct db_command **, 110 const struct db_command *); 111 static void db_event_print_cmd(db_expr_t, bool, db_expr_t, const char *); 112 static void db_fncall(db_expr_t, bool, db_expr_t, const char *); 113 static void db_malloc_print_cmd(db_expr_t, bool, db_expr_t, const char *); 114 static void db_map_print_cmd(db_expr_t, bool, db_expr_t, const char *); 115 static void db_namecache_print_cmd(db_expr_t, bool, db_expr_t, const char *); 116 static void db_object_print_cmd(db_expr_t, bool, db_expr_t, const char *); 117 static void db_page_print_cmd(db_expr_t, bool, db_expr_t, const char *); 118 static void db_show_all_pages(db_expr_t, bool, db_expr_t, const char *); 119 static void db_pool_print_cmd(db_expr_t, bool, db_expr_t, const char *); 120 static void db_reboot_cmd(db_expr_t, bool, db_expr_t, const char *); 121 static void db_sifting_cmd(db_expr_t, bool, db_expr_t, const char *); 122 static void db_stack_trace_cmd(db_expr_t, bool, db_expr_t, const char *); 123 static void db_sync_cmd(db_expr_t, bool, db_expr_t, const char *); 124 static void db_uvmexp_print_cmd(db_expr_t, bool, db_expr_t, const char *); 125 static void db_vnode_print_cmd(db_expr_t, bool, db_expr_t, const char *); 126 static void db_lock_print_cmd(db_expr_t, bool, db_expr_t, const char *); 127 static void db_mount_print_cmd(db_expr_t, bool, db_expr_t, const char *); 128 static void db_mbuf_print_cmd(db_expr_t, bool, db_expr_t, const char *); 129 130 /* 131 * 'show' commands 132 */ 133 134 static const struct db_command db_show_all_cmds[] = { 135 { "callout", db_show_callout, 0, NULL }, 136 { "pages", db_show_all_pages, 0, NULL }, 137 { "procs", db_show_all_procs, 0, NULL }, 138 { "pools", db_show_all_pools, 0, NULL }, 139 { NULL, NULL, 0, NULL } 140 }; 141 142 static const struct db_command db_show_cmds[] = { 143 { "aio_jobs", db_show_aio_jobs, 0, NULL }, 144 { "all", NULL, 0, db_show_all_cmds }, 145 #if defined(INET) && (NARP > 0) 146 { "arptab", db_show_arptab, 0, NULL }, 147 #endif 148 { "breaks", db_listbreak_cmd, 0, NULL }, 149 { "buf", db_buf_print_cmd, 0, NULL }, 150 { "event", db_event_print_cmd, 0, NULL }, 151 { "lock", db_lock_print_cmd, 0, NULL }, 152 { "malloc", db_malloc_print_cmd, 0, NULL }, 153 { "map", db_map_print_cmd, 0, NULL }, 154 { "mount", db_mount_print_cmd, 0, NULL }, 155 { "mbuf", db_mbuf_print_cmd, 0, NULL }, 156 { "ncache", db_namecache_print_cmd, 0, NULL }, 157 { "object", db_object_print_cmd, 0, NULL }, 158 { "page", db_page_print_cmd, 0, NULL }, 159 { "pool", db_pool_print_cmd, 0, NULL }, 160 { "registers", db_show_regs, 0, NULL }, 161 { "sched_qs", db_show_sched_qs, 0, NULL }, 162 { "uvmexp", db_uvmexp_print_cmd, 0, NULL }, 163 { "vnode", db_vnode_print_cmd, 0, NULL }, 164 { "watches", db_listwatch_cmd, 0, NULL }, 165 { NULL, NULL, 0, NULL } 166 }; 167 168 /* arch/<arch>/<arch>/db_interface.c */ 169 #ifdef DB_MACHINE_COMMANDS 170 extern const struct db_command db_machine_command_table[]; 171 #endif 172 173 static const struct db_command db_command_table[] = { 174 { "b", db_breakpoint_cmd, 0, NULL }, 175 { "break", db_breakpoint_cmd, 0, NULL }, 176 { "bt", db_stack_trace_cmd, 0, NULL }, 177 { "c", db_continue_cmd, 0, NULL }, 178 { "call", db_fncall, CS_OWN, NULL }, 179 { "callout", db_show_callout, 0, NULL }, 180 { "continue", db_continue_cmd, 0, NULL }, 181 { "d", db_delete_cmd, 0, NULL }, 182 { "delete", db_delete_cmd, 0, NULL }, 183 { "dmesg", db_dmesg, 0, NULL }, 184 { "dwatch", db_deletewatch_cmd, 0, NULL }, 185 { "examine", db_examine_cmd, CS_SET_DOT, NULL }, 186 { "kill", db_kill_proc, CS_OWN, NULL }, 187 #ifdef KGDB 188 { "kgdb", db_kgdb_cmd, 0, NULL }, 189 #endif 190 #ifdef DB_MACHINE_COMMANDS 191 { "machine", NULL, 0, db_machine_command_table }, 192 #endif 193 { "match", db_trace_until_matching_cmd,0, NULL }, 194 { "next", db_trace_until_matching_cmd,0, NULL }, 195 { "p", db_print_cmd, 0, NULL }, 196 { "print", db_print_cmd, 0, NULL }, 197 { "ps", db_show_all_procs, 0, NULL }, 198 { "reboot", db_reboot_cmd, CS_OWN, NULL }, 199 { "s", db_single_step_cmd, 0, NULL }, 200 { "search", db_search_cmd, CS_OWN|CS_SET_DOT, NULL }, 201 { "set", db_set_cmd, CS_OWN, NULL }, 202 { "show", NULL, 0, db_show_cmds }, 203 { "sifting", db_sifting_cmd, CS_OWN, NULL }, 204 { "step", db_single_step_cmd, 0, NULL }, 205 { "sync", db_sync_cmd, CS_OWN, NULL }, 206 { "trace", db_stack_trace_cmd, 0, NULL }, 207 { "until", db_trace_until_call_cmd,0, NULL }, 208 { "w", db_write_cmd, CS_MORE|CS_SET_DOT, NULL }, 209 { "watch", db_watchpoint_cmd, CS_MORE, NULL }, 210 { "write", db_write_cmd, CS_MORE|CS_SET_DOT, NULL }, 211 { "x", db_examine_cmd, CS_SET_DOT, NULL }, 212 { NULL, NULL, 0, NULL } 213 }; 214 215 static const struct db_command *db_last_command = NULL; 216 #if defined(DDB_COMMANDONENTER) 217 char db_cmd_on_enter[DB_LINE_MAXLEN + 1] = ___STRING(DDB_COMMANDONENTER); 218 #else /* defined(DDB_COMMANDONENTER) */ 219 char db_cmd_on_enter[DB_LINE_MAXLEN + 1] = ""; 220 #endif /* defined(DDB_COMMANDONENTER) */ 221 #define DB_LINE_SEP ';' 222 223 /* 224 * Utility routine - discard tokens through end-of-line. 225 */ 226 void 227 db_skip_to_eol(void) 228 { 229 int t; 230 231 do { 232 t = db_read_token(); 233 } while (t != tEOL); 234 } 235 236 void 237 db_error(const char *s) 238 { 239 240 if (s) 241 db_printf("%s", s); 242 db_flush_lex(); 243 longjmp(db_recover); 244 } 245 246 static void 247 db_execute_commandlist(const char *cmdlist) 248 { 249 const char *cmd = cmdlist; 250 const struct db_command *dummy = NULL; 251 252 while (*cmd != '\0') { 253 const char *ep = cmd; 254 255 while (*ep != '\0' && *ep != DB_LINE_SEP) { 256 ep++; 257 } 258 db_set_line(cmd, ep); 259 db_command(&dummy, db_command_table); 260 cmd = ep; 261 if (*cmd == DB_LINE_SEP) { 262 cmd++; 263 } 264 } 265 } 266 267 void 268 db_command_loop(void) 269 { 270 label_t db_jmpbuf; 271 label_t *savejmp; 272 273 /* 274 * Initialize 'prev' and 'next' to dot. 275 */ 276 db_prev = db_dot; 277 db_next = db_dot; 278 279 db_cmd_loop_done = 0; 280 281 savejmp = db_recover; 282 db_recover = &db_jmpbuf; 283 (void) setjmp(&db_jmpbuf); 284 285 db_execute_commandlist(db_cmd_on_enter); 286 287 while (!db_cmd_loop_done) { 288 if (db_print_position() != 0) 289 db_printf("\n"); 290 db_output_line = 0; 291 292 293 #ifdef MULTIPROCESSOR 294 db_printf("db{%ld}> ", (long)cpu_number()); 295 #else 296 db_printf("db> "); 297 #endif 298 (void) db_read_line(); 299 300 db_command(&db_last_command, db_command_table); 301 } 302 303 db_recover = savejmp; 304 } 305 306 /* 307 * Search for command prefix. 308 */ 309 static int 310 db_cmd_search(const char *name, const struct db_command *table, 311 const struct db_command **cmdp) 312 { 313 const struct db_command *cmd; 314 int result = CMD_NONE; 315 316 for (cmd = table; cmd->name != 0; cmd++) { 317 const char *lp; 318 const char *rp; 319 int c; 320 321 lp = name; 322 rp = cmd->name; 323 while ((c = *lp) == *rp) { 324 if (c == 0) { 325 /* complete match */ 326 *cmdp = cmd; 327 return (CMD_UNIQUE); 328 } 329 lp++; 330 rp++; 331 } 332 if (c == 0) { 333 /* end of name, not end of command - 334 partial match */ 335 if (result == CMD_FOUND) { 336 result = CMD_AMBIGUOUS; 337 /* but keep looking for a full match - 338 this lets us match single letters */ 339 } else { 340 *cmdp = cmd; 341 result = CMD_FOUND; 342 } 343 } 344 } 345 if (result == CMD_NONE) { 346 /* check for 'help' */ 347 if (name[0] == 'h' && name[1] == 'e' 348 && name[2] == 'l' && name[3] == 'p') 349 result = CMD_HELP; 350 } 351 return (result); 352 } 353 354 static void 355 db_cmd_list(const struct db_command *table) 356 { 357 int i, j, w, columns, lines, width=0, numcmds; 358 const char *p; 359 360 for (numcmds = 0; table[numcmds].name != NULL; numcmds++) { 361 w = strlen(table[numcmds].name); 362 if (w > width) 363 width = w; 364 } 365 width = DB_NEXT_TAB(width); 366 367 columns = db_max_width / width; 368 if (columns == 0) 369 columns = 1; 370 lines = (numcmds + columns - 1) / columns; 371 for (i = 0; i < lines; i++) { 372 for (j = 0; j < columns; j++) { 373 p = table[j * lines + i].name; 374 if (p) 375 db_printf("%s", p); 376 if (j * lines + i + lines >= numcmds) { 377 db_putchar('\n'); 378 break; 379 } 380 if (p) { 381 w = strlen(p); 382 while (w < width) { 383 w = DB_NEXT_TAB(w); 384 db_putchar('\t'); 385 } 386 } 387 } 388 } 389 } 390 391 static void 392 db_command(const struct db_command **last_cmdp, 393 const struct db_command *cmd_table) 394 { 395 const struct db_command *cmd; 396 int t; 397 char modif[TOK_STRING_SIZE]; 398 db_expr_t addr, count; 399 bool have_addr = false; 400 int result; 401 static db_expr_t last_count = 0; 402 403 cmd = NULL; /* XXX gcc */ 404 405 t = db_read_token(); 406 if ((t == tEOL) || (t == tCOMMA)) { 407 /* 408 * An empty line repeats last command, at 'next'. 409 * Only a count repeats the last command with the new count. 410 */ 411 cmd = *last_cmdp; 412 addr = (db_expr_t)db_next; 413 if (t == tCOMMA) { 414 if (!db_expression(&count)) { 415 db_printf("Count missing\n"); 416 db_flush_lex(); 417 return; 418 } 419 } else 420 count = last_count; 421 have_addr = false; 422 modif[0] = '\0'; 423 db_skip_to_eol(); 424 } else if (t == tEXCL) { 425 db_fncall(0, 0, 0, NULL); 426 return; 427 } else if (t != tIDENT) { 428 db_printf("?\n"); 429 db_flush_lex(); 430 return; 431 } else { 432 /* 433 * Search for command 434 */ 435 while (cmd_table) { 436 result = db_cmd_search(db_tok_string, cmd_table, &cmd); 437 switch (result) { 438 case CMD_NONE: 439 db_printf("No such command\n"); 440 db_flush_lex(); 441 return; 442 case CMD_AMBIGUOUS: 443 db_printf("Ambiguous\n"); 444 db_flush_lex(); 445 return; 446 case CMD_HELP: 447 db_cmd_list(cmd_table); 448 db_flush_lex(); 449 return; 450 default: 451 break; 452 } 453 if ((cmd_table = cmd->more) != 0) { 454 t = db_read_token(); 455 if (t != tIDENT) { 456 db_cmd_list(cmd_table); 457 db_flush_lex(); 458 return; 459 } 460 } 461 } 462 463 if ((cmd->flag & CS_OWN) == 0) { 464 /* 465 * Standard syntax: 466 * command [/modifier] [addr] [,count] 467 */ 468 t = db_read_token(); 469 if (t == tSLASH) { 470 t = db_read_token(); 471 if (t != tIDENT) { 472 db_printf("Bad modifier\n"); 473 db_flush_lex(); 474 return; 475 } 476 strlcpy(modif, db_tok_string, sizeof(modif)); 477 } else { 478 db_unread_token(t); 479 modif[0] = '\0'; 480 } 481 482 if (db_expression(&addr)) { 483 db_dot = (db_addr_t) addr; 484 db_last_addr = db_dot; 485 have_addr = true; 486 } else { 487 addr = (db_expr_t) db_dot; 488 have_addr = false; 489 } 490 t = db_read_token(); 491 if (t == tCOMMA) { 492 if (!db_expression(&count)) { 493 db_printf("Count missing\n"); 494 db_flush_lex(); 495 return; 496 } 497 } else { 498 db_unread_token(t); 499 count = -1; 500 } 501 if ((cmd->flag & CS_MORE) == 0) { 502 db_skip_to_eol(); 503 } 504 } 505 } 506 *last_cmdp = cmd; 507 last_count = count; 508 if (cmd != 0) { 509 /* 510 * Execute the command. 511 */ 512 (*cmd->fcn)(addr, have_addr, count, modif); 513 514 if (cmd->flag & CS_SET_DOT) { 515 /* 516 * If command changes dot, set dot to 517 * previous address displayed (if 'ed' style). 518 */ 519 if (db_ed_style) 520 db_dot = db_prev; 521 else 522 db_dot = db_next; 523 } else { 524 /* 525 * If command does not change dot, 526 * set 'next' location to be the same. 527 */ 528 db_next = db_dot; 529 } 530 } 531 } 532 533 /*ARGSUSED*/ 534 static void 535 db_map_print_cmd(db_expr_t addr, bool have_addr, db_expr_t count, 536 const char *modif) 537 { 538 bool full = false; 539 540 if (modif[0] == 'f') 541 full = true; 542 543 if (have_addr == false) 544 addr = (db_expr_t)(intptr_t) kernel_map; 545 546 uvm_map_printit((struct vm_map *)(intptr_t) addr, full, db_printf); 547 } 548 549 /*ARGSUSED*/ 550 static void 551 db_malloc_print_cmd(db_expr_t addr, bool have_addr, 552 db_expr_t count, const char *modif) 553 { 554 555 #ifdef MALLOC_DEBUG 556 if (!have_addr) 557 addr = 0; 558 559 debug_malloc_printit(db_printf, (vaddr_t) addr); 560 #else 561 db_printf("The kernel is not built with the MALLOC_DEBUG option.\n"); 562 #endif /* MALLOC_DEBUG */ 563 } 564 565 /*ARGSUSED*/ 566 static void 567 db_object_print_cmd(db_expr_t addr, bool have_addr, 568 db_expr_t count, const char *modif) 569 { 570 bool full = false; 571 572 if (modif[0] == 'f') 573 full = true; 574 575 uvm_object_printit((struct uvm_object *)(intptr_t) addr, full, 576 db_printf); 577 } 578 579 /*ARGSUSED*/ 580 static void 581 db_page_print_cmd(db_expr_t addr, bool have_addr, 582 db_expr_t count, const char *modif) 583 { 584 bool full = false; 585 586 if (modif[0] == 'f') 587 full = true; 588 589 uvm_page_printit((struct vm_page *)(intptr_t) addr, full, db_printf); 590 } 591 592 /*ARGSUSED*/ 593 static void 594 db_show_all_pages(db_expr_t addr, bool have_addr, 595 db_expr_t count, const char *modif) 596 { 597 598 uvm_page_printall(db_printf); 599 } 600 601 /*ARGSUSED*/ 602 static void 603 db_buf_print_cmd(db_expr_t addr, bool have_addr, 604 db_expr_t count, const char *modif) 605 { 606 bool full = false; 607 608 if (modif[0] == 'f') 609 full = true; 610 611 vfs_buf_print((struct buf *)(intptr_t) addr, full, db_printf); 612 } 613 614 /*ARGSUSED*/ 615 static void 616 db_event_print_cmd(db_expr_t addr, bool have_addr, 617 db_expr_t count, const char *modif) 618 { 619 bool full = false; 620 621 if (modif[0] == 'f') 622 full = true; 623 624 event_print(full, db_printf); 625 } 626 627 /*ARGSUSED*/ 628 static void 629 db_vnode_print_cmd(db_expr_t addr, bool have_addr, 630 db_expr_t count, const char *modif) 631 { 632 bool full = false; 633 634 if (modif[0] == 'f') 635 full = true; 636 637 vfs_vnode_print((struct vnode *)(intptr_t) addr, full, db_printf); 638 } 639 640 static void 641 db_mount_print_cmd(db_expr_t addr, bool have_addr, 642 db_expr_t count, const char *modif) 643 { 644 bool full = false; 645 646 if (modif[0] == 'f') 647 full = true; 648 649 vfs_mount_print((struct mount *)(intptr_t) addr, full, db_printf); 650 } 651 652 /*ARGSUSED*/ 653 static void 654 db_mbuf_print_cmd(db_expr_t addr, bool have_addr, 655 db_expr_t count, const char *modif) 656 { 657 658 m_print((const struct mbuf *)(intptr_t) addr, modif, db_printf); 659 } 660 661 /*ARGSUSED*/ 662 static void 663 db_pool_print_cmd(db_expr_t addr, bool have_addr, 664 db_expr_t count, const char *modif) 665 { 666 667 pool_printit((struct pool *)(intptr_t) addr, modif, db_printf); 668 } 669 670 /*ARGSUSED*/ 671 static void 672 db_namecache_print_cmd(db_expr_t addr, bool have_addr, 673 db_expr_t count, const char *modif) 674 { 675 676 namecache_print((struct vnode *)(intptr_t) addr, db_printf); 677 } 678 679 /*ARGSUSED*/ 680 static void 681 db_uvmexp_print_cmd(db_expr_t addr, bool have_addr, 682 db_expr_t count, const char *modif) 683 { 684 685 uvmexp_print(db_printf); 686 } 687 688 /*ARGSUSED*/ 689 static void 690 db_lock_print_cmd(db_expr_t addr, bool have_addr, 691 db_expr_t count, const char *modif) 692 { 693 694 lockdebug_lock_print((void *)addr, db_printf); 695 } 696 697 /* 698 * Call random function: 699 * !expr(arg,arg,arg) 700 */ 701 /*ARGSUSED*/ 702 static void 703 db_fncall(db_expr_t addr, bool have_addr, 704 db_expr_t count, const char *modif) 705 { 706 db_expr_t fn_addr; 707 #define MAXARGS 11 708 db_expr_t args[MAXARGS]; 709 int nargs = 0; 710 db_expr_t retval; 711 db_expr_t (*func)(db_expr_t, ...); 712 int t; 713 714 if (!db_expression(&fn_addr)) { 715 db_printf("Bad function\n"); 716 db_flush_lex(); 717 return; 718 } 719 func = (db_expr_t (*)(db_expr_t, ...))(intptr_t) fn_addr; 720 721 t = db_read_token(); 722 if (t == tLPAREN) { 723 if (db_expression(&args[0])) { 724 nargs++; 725 while ((t = db_read_token()) == tCOMMA) { 726 if (nargs == MAXARGS) { 727 db_printf("Too many arguments\n"); 728 db_flush_lex(); 729 return; 730 } 731 if (!db_expression(&args[nargs])) { 732 db_printf("Argument missing\n"); 733 db_flush_lex(); 734 return; 735 } 736 nargs++; 737 } 738 db_unread_token(t); 739 } 740 if (db_read_token() != tRPAREN) { 741 db_printf("?\n"); 742 db_flush_lex(); 743 return; 744 } 745 } 746 db_skip_to_eol(); 747 748 while (nargs < MAXARGS) { 749 args[nargs++] = 0; 750 } 751 752 retval = (*func)(args[0], args[1], args[2], args[3], args[4], 753 args[5], args[6], args[7], args[8], args[9]); 754 db_printf("%s\n", db_num_to_str(retval)); 755 } 756 757 static void 758 db_reboot_cmd(db_expr_t addr, bool have_addr, 759 db_expr_t count, const char *modif) 760 { 761 db_expr_t bootflags; 762 763 /* Flags, default to RB_AUTOBOOT */ 764 if (!db_expression(&bootflags)) 765 bootflags = (db_expr_t)RB_AUTOBOOT; 766 if (db_read_token() != tEOL) { 767 db_error("?\n"); 768 /*NOTREACHED*/ 769 } 770 /* 771 * We are leaving DDB, never to return upward. 772 * Clear db_recover so that we can debug faults in functions 773 * called from cpu_reboot. 774 */ 775 db_recover = 0; 776 cpu_reboot((int)bootflags, NULL); 777 } 778 779 static void 780 db_sifting_cmd(db_expr_t addr, bool have_addr, 781 db_expr_t count, const char *modif) 782 { 783 int mode, t; 784 785 t = db_read_token(); 786 if (t == tSLASH) { 787 t = db_read_token(); 788 if (t != tIDENT) { 789 bad_modifier: 790 db_printf("Bad modifier\n"); 791 db_flush_lex(); 792 return; 793 } 794 if (!strcmp(db_tok_string, "F")) 795 mode = 'F'; 796 else 797 goto bad_modifier; 798 t = db_read_token(); 799 } else 800 mode = 0; 801 802 if (t == tIDENT) 803 db_sifting(db_tok_string, mode); 804 else { 805 db_printf("Bad argument (non-string)\n"); 806 db_flush_lex(); 807 } 808 } 809 810 static void 811 db_stack_trace_cmd(db_expr_t addr, bool have_addr, db_expr_t count, const char *modif) 812 { 813 register const char *cp = modif; 814 register char c; 815 void (*pr)(const char *, ...); 816 817 pr = db_printf; 818 while ((c = *cp++) != 0) 819 if (c == 'l') 820 pr = printf; 821 822 if (count == -1) 823 count = 65535; 824 825 db_stack_trace_print(addr, have_addr, count, modif, pr); 826 } 827 828 static void 829 db_sync_cmd(db_expr_t addr, bool have_addr, 830 db_expr_t count, const char *modif) 831 { 832 833 /* 834 * We are leaving DDB, never to return upward. 835 * Clear db_recover so that we can debug faults in functions 836 * called from cpu_reboot. 837 */ 838 db_recover = 0; 839 cpu_reboot(RB_DUMP, NULL); 840 } 841
Indexes created Tue Sep 30 11:09:46 GMT 2025