db_command.c revision 1.97
1 /* $NetBSD: db_command.c,v 1.97 2007/09/07 18:56:06 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 1.97 2007/09/07 18:56:06 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 { "mqueue", db_show_mqueue_cmd, 0, NULL }, 157 { "ncache", db_namecache_print_cmd, 0, NULL }, 158 { "object", db_object_print_cmd, 0, NULL }, 159 { "page", db_page_print_cmd, 0, NULL }, 160 { "pool", db_pool_print_cmd, 0, NULL }, 161 { "registers", db_show_regs, 0, NULL }, 162 { "sched_qs", db_show_sched_qs, 0, NULL }, 163 { "uvmexp", db_uvmexp_print_cmd, 0, NULL }, 164 { "vnode", db_vnode_print_cmd, 0, NULL }, 165 { "watches", db_listwatch_cmd, 0, NULL }, 166 { NULL, NULL, 0, NULL } 167 }; 168 169 /* arch/<arch>/<arch>/db_interface.c */ 170 #ifdef DB_MACHINE_COMMANDS 171 extern const struct db_command db_machine_command_table[]; 172 #endif 173 174 static const struct db_command db_command_table[] = { 175 { "b", db_breakpoint_cmd, 0, NULL }, 176 { "break", db_breakpoint_cmd, 0, NULL }, 177 { "bt", db_stack_trace_cmd, 0, NULL }, 178 { "c", db_continue_cmd, 0, NULL }, 179 { "call", db_fncall, CS_OWN, NULL }, 180 { "callout", db_show_callout, 0, NULL }, 181 { "continue", db_continue_cmd, 0, NULL }, 182 { "d", db_delete_cmd, 0, NULL }, 183 { "delete", db_delete_cmd, 0, NULL }, 184 { "dmesg", db_dmesg, 0, NULL }, 185 { "dwatch", db_deletewatch_cmd, 0, NULL }, 186 { "examine", db_examine_cmd, CS_SET_DOT, NULL }, 187 { "kill", db_kill_proc, CS_OWN, NULL }, 188 #ifdef KGDB 189 { "kgdb", db_kgdb_cmd, 0, NULL }, 190 #endif 191 #ifdef DB_MACHINE_COMMANDS 192 { "machine", NULL, 0, db_machine_command_table }, 193 #endif 194 { "match", db_trace_until_matching_cmd,0, NULL }, 195 { "next", db_trace_until_matching_cmd,0, NULL }, 196 { "p", db_print_cmd, 0, NULL }, 197 { "print", db_print_cmd, 0, NULL }, 198 { "ps", db_show_all_procs, 0, NULL }, 199 { "reboot", db_reboot_cmd, CS_OWN, NULL }, 200 { "s", db_single_step_cmd, 0, NULL }, 201 { "search", db_search_cmd, CS_OWN|CS_SET_DOT, NULL }, 202 { "set", db_set_cmd, CS_OWN, NULL }, 203 { "show", NULL, 0, db_show_cmds }, 204 { "sifting", db_sifting_cmd, CS_OWN, NULL }, 205 { "step", db_single_step_cmd, 0, NULL }, 206 { "sync", db_sync_cmd, CS_OWN, NULL }, 207 { "trace", db_stack_trace_cmd, 0, NULL }, 208 { "until", db_trace_until_call_cmd,0, NULL }, 209 { "w", db_write_cmd, CS_MORE|CS_SET_DOT, NULL }, 210 { "watch", db_watchpoint_cmd, CS_MORE, NULL }, 211 { "write", db_write_cmd, CS_MORE|CS_SET_DOT, NULL }, 212 { "x", db_examine_cmd, CS_SET_DOT, NULL }, 213 { NULL, NULL, 0, NULL } 214 }; 215 216 static const struct db_command *db_last_command = NULL; 217 #if defined(DDB_COMMANDONENTER) 218 char db_cmd_on_enter[DB_LINE_MAXLEN + 1] = ___STRING(DDB_COMMANDONENTER); 219 #else /* defined(DDB_COMMANDONENTER) */ 220 char db_cmd_on_enter[DB_LINE_MAXLEN + 1] = ""; 221 #endif /* defined(DDB_COMMANDONENTER) */ 222 #define DB_LINE_SEP ';' 223 224 /* 225 * Utility routine - discard tokens through end-of-line. 226 */ 227 void 228 db_skip_to_eol(void) 229 { 230 int t; 231 232 do { 233 t = db_read_token(); 234 } while (t != tEOL); 235 } 236 237 void 238 db_error(const char *s) 239 { 240 241 if (s) 242 db_printf("%s", s); 243 db_flush_lex(); 244 longjmp(db_recover); 245 } 246 247 static void 248 db_execute_commandlist(const char *cmdlist) 249 { 250 const char *cmd = cmdlist; 251 const struct db_command *dummy = NULL; 252 253 while (*cmd != '\0') { 254 const char *ep = cmd; 255 256 while (*ep != '\0' && *ep != DB_LINE_SEP) { 257 ep++; 258 } 259 db_set_line(cmd, ep); 260 db_command(&dummy, db_command_table); 261 cmd = ep; 262 if (*cmd == DB_LINE_SEP) { 263 cmd++; 264 } 265 } 266 } 267 268 void 269 db_command_loop(void) 270 { 271 label_t db_jmpbuf; 272 label_t *savejmp; 273 274 /* 275 * Initialize 'prev' and 'next' to dot. 276 */ 277 db_prev = db_dot; 278 db_next = db_dot; 279 280 db_cmd_loop_done = 0; 281 282 savejmp = db_recover; 283 db_recover = &db_jmpbuf; 284 (void) setjmp(&db_jmpbuf); 285 286 db_execute_commandlist(db_cmd_on_enter); 287 288 while (!db_cmd_loop_done) { 289 if (db_print_position() != 0) 290 db_printf("\n"); 291 db_output_line = 0; 292 293 294 #ifdef MULTIPROCESSOR 295 db_printf("db{%ld}> ", (long)cpu_number()); 296 #else 297 db_printf("db> "); 298 #endif 299 (void) db_read_line(); 300 301 db_command(&db_last_command, db_command_table); 302 } 303 304 db_recover = savejmp; 305 } 306 307 /* 308 * Search for command prefix. 309 */ 310 static int 311 db_cmd_search(const char *name, const struct db_command *table, 312 const struct db_command **cmdp) 313 { 314 const struct db_command *cmd; 315 int result = CMD_NONE; 316 317 for (cmd = table; cmd->name != 0; cmd++) { 318 const char *lp; 319 const char *rp; 320 int c; 321 322 lp = name; 323 rp = cmd->name; 324 while ((c = *lp) == *rp) { 325 if (c == 0) { 326 /* complete match */ 327 *cmdp = cmd; 328 return (CMD_UNIQUE); 329 } 330 lp++; 331 rp++; 332 } 333 if (c == 0) { 334 /* end of name, not end of command - 335 partial match */ 336 if (result == CMD_FOUND) { 337 result = CMD_AMBIGUOUS; 338 /* but keep looking for a full match - 339 this lets us match single letters */ 340 } else { 341 *cmdp = cmd; 342 result = CMD_FOUND; 343 } 344 } 345 } 346 if (result == CMD_NONE) { 347 /* check for 'help' */ 348 if (name[0] == 'h' && name[1] == 'e' 349 && name[2] == 'l' && name[3] == 'p') 350 result = CMD_HELP; 351 } 352 return (result); 353 } 354 355 static void 356 db_cmd_list(const struct db_command *table) 357 { 358 int i, j, w, columns, lines, width=0, numcmds; 359 const char *p; 360 361 for (numcmds = 0; table[numcmds].name != NULL; numcmds++) { 362 w = strlen(table[numcmds].name); 363 if (w > width) 364 width = w; 365 } 366 width = DB_NEXT_TAB(width); 367 368 columns = db_max_width / width; 369 if (columns == 0) 370 columns = 1; 371 lines = (numcmds + columns - 1) / columns; 372 for (i = 0; i < lines; i++) { 373 for (j = 0; j < columns; j++) { 374 p = table[j * lines + i].name; 375 if (p) 376 db_printf("%s", p); 377 if (j * lines + i + lines >= numcmds) { 378 db_putchar('\n'); 379 break; 380 } 381 if (p) { 382 w = strlen(p); 383 while (w < width) { 384 w = DB_NEXT_TAB(w); 385 db_putchar('\t'); 386 } 387 } 388 } 389 } 390 } 391 392 static void 393 db_command(const struct db_command **last_cmdp, 394 const struct db_command *cmd_table) 395 { 396 const struct db_command *cmd; 397 int t; 398 char modif[TOK_STRING_SIZE]; 399 db_expr_t addr, count; 400 bool have_addr = false; 401 int result; 402 static db_expr_t last_count = 0; 403 404 cmd = NULL; /* XXX gcc */ 405 406 t = db_read_token(); 407 if ((t == tEOL) || (t == tCOMMA)) { 408 /* 409 * An empty line repeats last command, at 'next'. 410 * Only a count repeats the last command with the new count. 411 */ 412 cmd = *last_cmdp; 413 addr = (db_expr_t)db_next; 414 if (t == tCOMMA) { 415 if (!db_expression(&count)) { 416 db_printf("Count missing\n"); 417 db_flush_lex(); 418 return; 419 } 420 } else 421 count = last_count; 422 have_addr = false; 423 modif[0] = '\0'; 424 db_skip_to_eol(); 425 } else if (t == tEXCL) { 426 db_fncall(0, 0, 0, NULL); 427 return; 428 } else if (t != tIDENT) { 429 db_printf("?\n"); 430 db_flush_lex(); 431 return; 432 } else { 433 /* 434 * Search for command 435 */ 436 while (cmd_table) { 437 result = db_cmd_search(db_tok_string, cmd_table, &cmd); 438 switch (result) { 439 case CMD_NONE: 440 db_printf("No such command\n"); 441 db_flush_lex(); 442 return; 443 case CMD_AMBIGUOUS: 444 db_printf("Ambiguous\n"); 445 db_flush_lex(); 446 return; 447 case CMD_HELP: 448 db_cmd_list(cmd_table); 449 db_flush_lex(); 450 return; 451 default: 452 break; 453 } 454 if ((cmd_table = cmd->more) != 0) { 455 t = db_read_token(); 456 if (t != tIDENT) { 457 db_cmd_list(cmd_table); 458 db_flush_lex(); 459 return; 460 } 461 } 462 } 463 464 if ((cmd->flag & CS_OWN) == 0) { 465 /* 466 * Standard syntax: 467 * command [/modifier] [addr] [,count] 468 */ 469 t = db_read_token(); 470 if (t == tSLASH) { 471 t = db_read_token(); 472 if (t != tIDENT) { 473 db_printf("Bad modifier\n"); 474 db_flush_lex(); 475 return; 476 } 477 strlcpy(modif, db_tok_string, sizeof(modif)); 478 } else { 479 db_unread_token(t); 480 modif[0] = '\0'; 481 } 482 483 if (db_expression(&addr)) { 484 db_dot = (db_addr_t) addr; 485 db_last_addr = db_dot; 486 have_addr = true; 487 } else { 488 addr = (db_expr_t) db_dot; 489 have_addr = false; 490 } 491 t = db_read_token(); 492 if (t == tCOMMA) { 493 if (!db_expression(&count)) { 494 db_printf("Count missing\n"); 495 db_flush_lex(); 496 return; 497 } 498 } else { 499 db_unread_token(t); 500 count = -1; 501 } 502 if ((cmd->flag & CS_MORE) == 0) { 503 db_skip_to_eol(); 504 } 505 } 506 } 507 *last_cmdp = cmd; 508 last_count = count; 509 if (cmd != 0) { 510 /* 511 * Execute the command. 512 */ 513 (*cmd->fcn)(addr, have_addr, count, modif); 514 515 if (cmd->flag & CS_SET_DOT) { 516 /* 517 * If command changes dot, set dot to 518 * previous address displayed (if 'ed' style). 519 */ 520 if (db_ed_style) 521 db_dot = db_prev; 522 else 523 db_dot = db_next; 524 } else { 525 /* 526 * If command does not change dot, 527 * set 'next' location to be the same. 528 */ 529 db_next = db_dot; 530 } 531 } 532 } 533 534 /*ARGSUSED*/ 535 static void 536 db_map_print_cmd(db_expr_t addr, bool have_addr, db_expr_t count, 537 const char *modif) 538 { 539 bool full = false; 540 541 if (modif[0] == 'f') 542 full = true; 543 544 if (have_addr == false) 545 addr = (db_expr_t)(intptr_t) kernel_map; 546 547 uvm_map_printit((struct vm_map *)(intptr_t) addr, full, db_printf); 548 } 549 550 /*ARGSUSED*/ 551 static void 552 db_malloc_print_cmd(db_expr_t addr, bool have_addr, 553 db_expr_t count, const char *modif) 554 { 555 556 #ifdef MALLOC_DEBUG 557 if (!have_addr) 558 addr = 0; 559 560 debug_malloc_printit(db_printf, (vaddr_t) addr); 561 #else 562 db_printf("The kernel is not built with the MALLOC_DEBUG option.\n"); 563 #endif /* MALLOC_DEBUG */ 564 } 565 566 /*ARGSUSED*/ 567 static void 568 db_object_print_cmd(db_expr_t addr, bool have_addr, 569 db_expr_t count, const char *modif) 570 { 571 bool full = false; 572 573 if (modif[0] == 'f') 574 full = true; 575 576 uvm_object_printit((struct uvm_object *)(intptr_t) addr, full, 577 db_printf); 578 } 579 580 /*ARGSUSED*/ 581 static void 582 db_page_print_cmd(db_expr_t addr, bool have_addr, 583 db_expr_t count, const char *modif) 584 { 585 bool full = false; 586 587 if (modif[0] == 'f') 588 full = true; 589 590 uvm_page_printit((struct vm_page *)(intptr_t) addr, full, db_printf); 591 } 592 593 /*ARGSUSED*/ 594 static void 595 db_show_all_pages(db_expr_t addr, bool have_addr, 596 db_expr_t count, const char *modif) 597 { 598 599 uvm_page_printall(db_printf); 600 } 601 602 /*ARGSUSED*/ 603 static void 604 db_buf_print_cmd(db_expr_t addr, bool have_addr, 605 db_expr_t count, const char *modif) 606 { 607 bool full = false; 608 609 if (modif[0] == 'f') 610 full = true; 611 612 vfs_buf_print((struct buf *)(intptr_t) addr, full, db_printf); 613 } 614 615 /*ARGSUSED*/ 616 static void 617 db_event_print_cmd(db_expr_t addr, bool have_addr, 618 db_expr_t count, const char *modif) 619 { 620 bool full = false; 621 622 if (modif[0] == 'f') 623 full = true; 624 625 event_print(full, db_printf); 626 } 627 628 /*ARGSUSED*/ 629 static void 630 db_vnode_print_cmd(db_expr_t addr, bool have_addr, 631 db_expr_t count, const char *modif) 632 { 633 bool full = false; 634 635 if (modif[0] == 'f') 636 full = true; 637 638 vfs_vnode_print((struct vnode *)(intptr_t) addr, full, db_printf); 639 } 640 641 static void 642 db_mount_print_cmd(db_expr_t addr, bool have_addr, 643 db_expr_t count, const char *modif) 644 { 645 bool full = false; 646 647 if (modif[0] == 'f') 648 full = true; 649 650 vfs_mount_print((struct mount *)(intptr_t) addr, full, db_printf); 651 } 652 653 /*ARGSUSED*/ 654 static void 655 db_mbuf_print_cmd(db_expr_t addr, bool have_addr, 656 db_expr_t count, const char *modif) 657 { 658 659 m_print((const struct mbuf *)(intptr_t) addr, modif, db_printf); 660 } 661 662 /*ARGSUSED*/ 663 static void 664 db_pool_print_cmd(db_expr_t addr, bool have_addr, 665 db_expr_t count, const char *modif) 666 { 667 668 pool_printit((struct pool *)(intptr_t) addr, modif, db_printf); 669 } 670 671 /*ARGSUSED*/ 672 static void 673 db_namecache_print_cmd(db_expr_t addr, bool have_addr, 674 db_expr_t count, const char *modif) 675 { 676 677 namecache_print((struct vnode *)(intptr_t) addr, db_printf); 678 } 679 680 /*ARGSUSED*/ 681 static void 682 db_uvmexp_print_cmd(db_expr_t addr, bool have_addr, 683 db_expr_t count, const char *modif) 684 { 685 686 uvmexp_print(db_printf); 687 } 688 689 /*ARGSUSED*/ 690 static void 691 db_lock_print_cmd(db_expr_t addr, bool have_addr, 692 db_expr_t count, const char *modif) 693 { 694 695 lockdebug_lock_print((void *)addr, db_printf); 696 } 697 698 /* 699 * Call random function: 700 * !expr(arg,arg,arg) 701 */ 702 /*ARGSUSED*/ 703 static void 704 db_fncall(db_expr_t addr, bool have_addr, 705 db_expr_t count, const char *modif) 706 { 707 db_expr_t fn_addr; 708 #define MAXARGS 11 709 db_expr_t args[MAXARGS]; 710 int nargs = 0; 711 db_expr_t retval; 712 db_expr_t (*func)(db_expr_t, ...); 713 int t; 714 715 if (!db_expression(&fn_addr)) { 716 db_printf("Bad function\n"); 717 db_flush_lex(); 718 return; 719 } 720 func = (db_expr_t (*)(db_expr_t, ...))(intptr_t) fn_addr; 721 722 t = db_read_token(); 723 if (t == tLPAREN) { 724 if (db_expression(&args[0])) { 725 nargs++; 726 while ((t = db_read_token()) == tCOMMA) { 727 if (nargs == MAXARGS) { 728 db_printf("Too many arguments\n"); 729 db_flush_lex(); 730 return; 731 } 732 if (!db_expression(&args[nargs])) { 733 db_printf("Argument missing\n"); 734 db_flush_lex(); 735 return; 736 } 737 nargs++; 738 } 739 db_unread_token(t); 740 } 741 if (db_read_token() != tRPAREN) { 742 db_printf("?\n"); 743 db_flush_lex(); 744 return; 745 } 746 } 747 db_skip_to_eol(); 748 749 while (nargs < MAXARGS) { 750 args[nargs++] = 0; 751 } 752 753 retval = (*func)(args[0], args[1], args[2], args[3], args[4], 754 args[5], args[6], args[7], args[8], args[9]); 755 db_printf("%s\n", db_num_to_str(retval)); 756 } 757 758 static void 759 db_reboot_cmd(db_expr_t addr, bool have_addr, 760 db_expr_t count, const char *modif) 761 { 762 db_expr_t bootflags; 763 764 /* Flags, default to RB_AUTOBOOT */ 765 if (!db_expression(&bootflags)) 766 bootflags = (db_expr_t)RB_AUTOBOOT; 767 if (db_read_token() != tEOL) { 768 db_error("?\n"); 769 /*NOTREACHED*/ 770 } 771 /* 772 * We are leaving DDB, never to return upward. 773 * Clear db_recover so that we can debug faults in functions 774 * called from cpu_reboot. 775 */ 776 db_recover = 0; 777 cpu_reboot((int)bootflags, NULL); 778 } 779 780 static void 781 db_sifting_cmd(db_expr_t addr, bool have_addr, 782 db_expr_t count, const char *modif) 783 { 784 int mode, t; 785 786 t = db_read_token(); 787 if (t == tSLASH) { 788 t = db_read_token(); 789 if (t != tIDENT) { 790 bad_modifier: 791 db_printf("Bad modifier\n"); 792 db_flush_lex(); 793 return; 794 } 795 if (!strcmp(db_tok_string, "F")) 796 mode = 'F'; 797 else 798 goto bad_modifier; 799 t = db_read_token(); 800 } else 801 mode = 0; 802 803 if (t == tIDENT) 804 db_sifting(db_tok_string, mode); 805 else { 806 db_printf("Bad argument (non-string)\n"); 807 db_flush_lex(); 808 } 809 } 810 811 static void 812 db_stack_trace_cmd(db_expr_t addr, bool have_addr, db_expr_t count, const char *modif) 813 { 814 register const char *cp = modif; 815 register char c; 816 void (*pr)(const char *, ...); 817 818 pr = db_printf; 819 while ((c = *cp++) != 0) 820 if (c == 'l') 821 pr = printf; 822 823 if (count == -1) 824 count = 65535; 825 826 db_stack_trace_print(addr, have_addr, count, modif, pr); 827 } 828 829 static void 830 db_sync_cmd(db_expr_t addr, bool have_addr, 831 db_expr_t count, const char *modif) 832 { 833 834 /* 835 * We are leaving DDB, never to return upward. 836 * Clear db_recover so that we can debug faults in functions 837 * called from cpu_reboot. 838 */ 839 db_recover = 0; 840 cpu_reboot(RB_DUMP, NULL); 841 } 842
Indexes created Tue Sep 30 11:09:46 GMT 2025