1 /* $OpenBSD: db_command.c,v 1.103 2024/11/07 16:02:29 miod 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 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 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 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 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 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 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 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 341 db_mbuf_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 342 { 343 if ((modif[0] == 'c' && modif[1] == 'p') || 344 (modif[0] == 'p' && modif[1] == 'c')) 345 m_print_packet((void *)addr, 1, db_printf); 346 else if (modif[0] == 'c') 347 m_print_chain((void *)addr, 0, db_printf); 348 else if (modif[0] == 'p') 349 m_print_packet((void *)addr, 0, db_printf); 350 else 351 m_print((void *)addr, db_printf); 352 } 353 354 void 355 db_socket_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 356 { 357 so_print((void *)addr, db_printf); 358 } 359 360 void 361 db_mount_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 362 { 363 int full = 0; 364 365 if (modif[0] == 'f') 366 full = 1; 367 368 vfs_mount_print((struct mount *) addr, full, db_printf); 369 } 370 371 void 372 db_show_all_mounts(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 373 { 374 int full = 0; 375 struct mount *mp; 376 377 if (modif[0] == 'f') 378 full = 1; 379 380 TAILQ_FOREACH(mp, &mountlist, mnt_list) { 381 db_printf("mountpoint %p\n", mp); 382 vfs_mount_print(mp, full, db_printf); 383 } 384 } 385 386 extern struct pool vnode_pool; 387 void 388 db_show_all_vnodes(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 389 { 390 int full = 0; 391 392 if (modif[0] == 'f') 393 full = 1; 394 395 pool_walk(&vnode_pool, full, db_printf, vfs_vnode_print); 396 } 397 398 extern struct pool bufpool; 399 void 400 db_show_all_bufs(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 401 { 402 int full = 0; 403 404 if (modif[0] == 'f') 405 full = 1; 406 407 pool_walk(&bufpool, full, db_printf, vfs_buf_print); 408 } 409 410 #ifdef IPSEC 411 void 412 db_show_all_tdbs(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 413 { 414 int full = 0; 415 416 if (modif[0] == 'f') 417 full = 1; 418 419 pool_walk(&tdb_pool, full, db_printf, tdb_printit); 420 } 421 #endif 422 423 void 424 db_show_all_routes(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 425 { 426 u_int rtableid = 0; 427 428 if (have_addr) 429 rtableid = addr; 430 if (count == -1) 431 count = 1; 432 433 while (count--) { 434 if (modif[0] != 'I') 435 db_show_rtable(AF_INET, rtableid); 436 if (modif[0] != 'i') 437 db_show_rtable(AF_INET6, rtableid); 438 rtableid++; 439 } 440 } 441 442 void 443 db_show_route(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 444 { 445 db_show_rtentry((void *)addr, NULL, -1); 446 } 447 448 void 449 db_object_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 450 { 451 int full = 0; 452 453 if (modif[0] == 'f') 454 full = 1; 455 456 uvm_object_printit((struct uvm_object *) addr, full, db_printf); 457 } 458 459 void 460 db_page_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 461 { 462 int full = 0; 463 464 if (modif[0] == 'f') 465 full = 1; 466 467 uvm_page_printit((struct vm_page *) addr, full, db_printf); 468 } 469 470 void 471 db_vnode_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 472 { 473 int full = 0; 474 475 if (modif[0] == 'f') 476 full = 1; 477 478 vfs_vnode_print((void *)addr, full, db_printf); 479 } 480 481 #ifdef NFSCLIENT 482 void 483 db_nfsreq_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, 484 char *modif) 485 { 486 int full = 0; 487 488 if (modif[0] == 'f') 489 full = 1; 490 491 nfs_request_print((void *)addr, full, db_printf); 492 } 493 494 void 495 db_nfsnode_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, 496 char *modif) 497 { 498 int full = 0; 499 500 if (modif[0] == 'f') 501 full = 1; 502 503 nfs_node_print((void *)addr, full, db_printf); 504 } 505 #endif 506 507 void 508 db_swap_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, 509 char *modif) 510 { 511 swap_print_all(db_printf); 512 } 513 514 void 515 db_show_panic_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 516 { 517 struct cpu_info *ci; 518 char *prefix; 519 CPU_INFO_ITERATOR cii; 520 int panicked = 0; 521 522 CPU_INFO_FOREACH(cii, ci) { 523 if (ci->ci_panicbuf[0] != '\0') { 524 prefix = (panicstr == ci->ci_panicbuf) ? "*" : " "; 525 db_printf("%scpu%d: %s\n", 526 prefix, CPU_INFO_UNIT(ci), ci->ci_panicbuf); 527 panicked = 1; 528 } 529 } 530 if (!panicked) 531 db_printf("the kernel did not panic\n"); /* yet */ 532 } 533 534 void 535 db_extent_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 536 { 537 extent_print_all(); 538 } 539 540 void 541 db_pool_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 542 { 543 pool_printit((struct pool *)addr, modif, db_printf); 544 } 545 546 void 547 db_proc_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 548 { 549 if (!have_addr) 550 addr = (db_expr_t)curproc; 551 if (modif[0] == 't') { 552 addr = (db_expr_t)tfind((pid_t)addr); 553 if (addr == 0) { 554 db_printf("not found\n"); 555 return; 556 } 557 } 558 559 proc_printit((struct proc *)addr, modif, db_printf); 560 } 561 562 #ifdef IPSEC 563 void 564 db_tdb_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 565 { 566 int full = 0; 567 568 if (modif[0] == 'f') 569 full = 1; 570 571 tdb_printit((void *)addr, full, db_printf); 572 } 573 #endif 574 575 void 576 db_uvmexp_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 577 { 578 uvmexp_print(db_printf); 579 } 580 581 void bcstats_print(int (*)(const char *, ...)); 582 583 void 584 db_bcstats_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 585 { 586 bcstats_print(db_printf); 587 } 588 589 /* 590 * 'show' commands 591 */ 592 593 const struct db_command db_show_all_cmds[] = { 594 { "procs", db_show_all_procs, 0, NULL }, 595 { "callout", db_show_callout, 0, NULL }, 596 { "clockintr", db_show_all_clockintr, 0, NULL }, 597 { "pools", db_show_all_pools, 0, NULL }, 598 { "mounts", db_show_all_mounts, 0, NULL }, 599 { "vnodes", db_show_all_vnodes, 0, NULL }, 600 { "bufs", db_show_all_bufs, 0, NULL }, 601 { "routes", db_show_all_routes, 0, NULL }, 602 #ifdef NFSCLIENT 603 { "nfsreqs", db_show_all_nfsreqs, 0, NULL }, 604 { "nfsnodes", db_show_all_nfsnodes, 0, NULL }, 605 #endif 606 #ifdef IPSEC 607 { "tdbs", db_show_all_tdbs, 0, NULL }, 608 #endif 609 #ifdef WITNESS 610 { "locks", db_witness_list_all, 0, NULL }, 611 #endif 612 { NULL, NULL, 0, NULL } 613 }; 614 615 const struct db_command db_show_cmds[] = { 616 { "all", NULL, 0, db_show_all_cmds }, 617 { "bcstats", db_bcstats_print_cmd, 0, NULL }, 618 { "breaks", db_listbreak_cmd, 0, NULL }, 619 { "buf", db_buf_print_cmd, 0, NULL }, 620 { "extents", db_extent_print_cmd, 0, NULL }, 621 #ifdef WITNESS 622 { "locks", db_witness_list, 0, NULL }, 623 #endif 624 { "malloc", db_malloc_print_cmd, 0, NULL }, 625 { "map", db_map_print_cmd, 0, NULL }, 626 { "mbuf", db_mbuf_print_cmd, 0, NULL }, 627 { "mount", db_mount_print_cmd, 0, NULL }, 628 #ifdef NFSCLIENT 629 { "nfsreq", db_nfsreq_print_cmd, 0, NULL }, 630 { "nfsnode", db_nfsnode_print_cmd, 0, NULL }, 631 #endif 632 { "object", db_object_print_cmd, 0, NULL }, 633 { "page", db_page_print_cmd, 0, NULL }, 634 { "panic", db_show_panic_cmd, 0, NULL }, 635 { "pool", db_pool_print_cmd, 0, NULL }, 636 { "proc", db_proc_print_cmd, 0, NULL }, 637 { "registers", db_show_regs, 0, NULL }, 638 { "route", db_show_route, 0, NULL }, 639 { "socket", db_socket_print_cmd, 0, NULL }, 640 { "struct", db_ctf_show_struct, CS_OWN, NULL }, 641 { "swap", db_swap_print_cmd, 0, NULL }, 642 #ifdef IPSEC 643 { "tdb", db_tdb_print_cmd, 0, NULL }, 644 #endif 645 { "uvmexp", db_uvmexp_print_cmd, 0, NULL }, 646 { "vnode", db_vnode_print_cmd, 0, NULL }, 647 { "watches", db_listwatch_cmd, 0, NULL }, 648 #ifdef WITNESS 649 { "witness", db_witness_display, 0, NULL }, 650 #endif 651 { NULL, NULL, 0, NULL } 652 }; 653 654 const struct db_command db_boot_cmds[] = { 655 { "sync", db_boot_sync_cmd, 0, 0 }, 656 { "crash", db_boot_crash_cmd, 0, 0 }, 657 { "dump", db_boot_dump_cmd, 0, 0 }, 658 { "halt", db_boot_halt_cmd, 0, 0 }, 659 { "reboot", db_boot_reboot_cmd, 0, 0 }, 660 { "poweroff", db_boot_poweroff_cmd, 0, 0 }, 661 { NULL, } 662 }; 663 664 const struct db_command db_command_table[] = { 665 #ifdef DB_MACHINE_COMMANDS 666 /* this must be the first entry, if it exists */ 667 { "machine", NULL, 0, db_machine_command_table }, 668 #endif 669 { "kill", db_kill_cmd, 0, NULL }, 670 { "print", db_print_cmd, 0, NULL }, 671 { "p", db_print_cmd, 0, NULL }, 672 { "pprint", db_ctf_pprint_cmd, CS_OWN, NULL }, 673 { "examine", db_examine_cmd, CS_SET_DOT, NULL }, 674 { "x", db_examine_cmd, CS_SET_DOT, NULL }, 675 { "search", db_search_cmd, CS_OWN|CS_SET_DOT, NULL }, 676 { "set", db_set_cmd, CS_OWN, NULL }, 677 { "write", db_write_cmd, CS_MORE|CS_SET_DOT, NULL }, 678 { "w", db_write_cmd, CS_MORE|CS_SET_DOT, NULL }, 679 { "delete", db_delete_cmd, 0, NULL }, 680 { "d", db_delete_cmd, 0, NULL }, 681 { "break", db_breakpoint_cmd, 0, NULL }, 682 { "dwatch", db_deletewatch_cmd, 0, NULL }, 683 { "watch", db_watchpoint_cmd, CS_MORE, NULL }, 684 { "step", db_single_step_cmd, 0, NULL }, 685 { "s", db_single_step_cmd, 0, NULL }, 686 { "continue", db_continue_cmd, 0, NULL }, 687 { "c", db_continue_cmd, 0, NULL }, 688 { "until", db_trace_until_call_cmd,0, NULL }, 689 { "next", db_trace_until_matching_cmd,0, NULL }, 690 { "match", db_trace_until_matching_cmd,0, NULL }, 691 { "trace", db_stack_trace_cmd, 0, NULL }, 692 { "bt", db_stack_trace_cmd, 0, NULL }, 693 { "call", db_fncall, CS_OWN, NULL }, 694 { "ps", db_show_all_procs, 0, NULL }, 695 { "callout", db_show_callout, 0, NULL }, 696 { "reboot", db_boot_reboot_cmd, 0, NULL }, 697 { "show", NULL, 0, db_show_cmds }, 698 { "boot", NULL, 0, db_boot_cmds }, 699 { "help", db_help_cmd, 0, NULL }, 700 { "hangman", db_hangman, 0, NULL }, 701 { "dmesg", db_dmesg_cmd, 0, NULL }, 702 { NULL, NULL, 0, NULL } 703 }; 704 705 const struct db_command *db_last_command = NULL; 706 707 void 708 db_help_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 709 { 710 db_cmd_list(db_command_table); 711 } 712 713 void 714 db_command_loop(void) 715 { 716 label_t db_jmpbuf; 717 label_t *savejmp; 718 extern int db_output_line; 719 720 /* 721 * Initialize 'prev' and 'next' to dot. 722 */ 723 db_prev = db_dot; 724 db_next = db_dot; 725 726 db_cmd_loop_done = 0; 727 728 savejmp = db_recover; 729 db_recover = &db_jmpbuf; 730 (void) setjmp(&db_jmpbuf); 731 732 while (!db_cmd_loop_done) { 733 734 if (db_print_position() != 0) 735 db_printf("\n"); 736 db_output_line = 0; 737 738 #ifdef MULTIPROCESSOR 739 db_printf("ddb{%d}> ", CPU_INFO_UNIT(curcpu())); 740 #else 741 db_printf("ddb> "); 742 #endif 743 (void) db_read_line(); 744 745 db_command(&db_last_command, db_command_table); 746 } 747 748 db_recover = savejmp; 749 } 750 751 void 752 db_error(char *s) 753 { 754 if (s) 755 db_printf("%s", s); 756 db_flush_lex(); 757 if (db_recover != NULL) 758 longjmp(db_recover); 759 } 760 761 762 /* 763 * Call random function: 764 * !expr(arg,arg,arg) 765 */ 766 void 767 db_fncall(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 768 { 769 db_expr_t fn_addr; 770 #define MAXARGS 11 771 db_expr_t args[MAXARGS]; 772 int nargs = 0; 773 db_expr_t retval; 774 db_expr_t (*func)(db_expr_t, ...); 775 int t; 776 char tmpfmt[28]; 777 778 if (!db_expression(&fn_addr)) { 779 db_printf("Bad function\n"); 780 db_flush_lex(); 781 return; 782 } 783 func = (db_expr_t (*)(db_expr_t, ...)) fn_addr; 784 785 t = db_read_token(); 786 if (t == tLPAREN) { 787 if (db_expression(&args[0])) { 788 nargs++; 789 while ((t = db_read_token()) == tCOMMA) { 790 if (nargs == MAXARGS) { 791 db_printf("Too many arguments\n"); 792 db_flush_lex(); 793 return; 794 } 795 if (!db_expression(&args[nargs])) { 796 db_printf("Argument missing\n"); 797 db_flush_lex(); 798 return; 799 } 800 nargs++; 801 } 802 db_unread_token(t); 803 } 804 if (db_read_token() != tRPAREN) { 805 db_printf("?\n"); 806 db_flush_lex(); 807 return; 808 } 809 } 810 db_skip_to_eol(); 811 812 while (nargs < MAXARGS) 813 args[nargs++] = 0; 814 815 retval = (*func)(args[0], args[1], args[2], args[3], args[4], 816 args[5], args[6], args[7], args[8], args[9]); 817 db_printf("%s\n", db_format(tmpfmt, sizeof tmpfmt, retval, 818 DB_FORMAT_N, 1, 0)); 819 } 820 821 void 822 db_reboot(int howto) 823 { 824 spl0(); 825 if (!curproc) 826 curproc = &proc0; 827 reboot(howto); 828 } 829 830 void 831 db_boot_sync_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 832 { 833 db_reboot(RB_AUTOBOOT | RB_TIMEBAD | RB_USERREQ); 834 } 835 836 void 837 db_boot_crash_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 838 { 839 db_reboot(RB_NOSYNC | RB_DUMP | RB_TIMEBAD | RB_USERREQ); 840 } 841 842 void 843 db_boot_dump_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 844 { 845 db_reboot(RB_DUMP | RB_TIMEBAD | RB_USERREQ); 846 } 847 848 void 849 db_boot_halt_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 850 { 851 db_reboot(RB_NOSYNC | RB_HALT | RB_TIMEBAD | RB_USERREQ); 852 } 853 854 void 855 db_boot_reboot_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 856 { 857 boot(RB_RESET | RB_AUTOBOOT | RB_NOSYNC | RB_TIMEBAD | RB_USERREQ); 858 } 859 860 void 861 db_boot_poweroff_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 862 { 863 db_reboot(RB_NOSYNC | RB_HALT | RB_POWERDOWN | RB_TIMEBAD | RB_USERREQ); 864 } 865 866 void 867 db_dmesg_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 868 { 869 int i, off; 870 char *p; 871 872 if (!msgbufp || msgbufp->msg_magic != MSG_MAGIC) 873 return; 874 off = msgbufp->msg_bufx; 875 if (off > msgbufp->msg_bufs) 876 off = 0; 877 for (i = 0, p = msgbufp->msg_bufc + off; 878 i < msgbufp->msg_bufs; i++, p++) { 879 if (p >= msgbufp->msg_bufc + msgbufp->msg_bufs) 880 p = msgbufp->msg_bufc; 881 if (*p != '\0') 882 db_putchar(*p); 883 } 884 db_putchar('\n'); 885 } 886 887 void 888 db_stack_trace_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 889 { 890 db_stack_trace_print(addr, have_addr, count, modif, db_printf); 891 } 892 893 void 894 db_show_regs(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 895 { 896 struct db_variable *regp; 897 db_expr_t value, offset; 898 const char * name; 899 char tmpfmt[28]; 900 901 for (regp = db_regs; regp < db_eregs; regp++) { 902 db_read_variable(regp, &value); 903 db_printf("%-12s%s", regp->name, 904 db_format(tmpfmt, sizeof tmpfmt, 905 (long)value, DB_FORMAT_N, 1, sizeof(long) * 3)); 906 db_find_xtrn_sym_and_offset((vaddr_t)value, &name, &offset); 907 if (name != 0 && offset <= db_maxoff && offset != value) { 908 db_printf("\t%s", name); 909 if (offset != 0) 910 db_printf("+%s", 911 db_format(tmpfmt, sizeof tmpfmt, 912 (long)offset, DB_FORMAT_R, 1, 0)); 913 } 914 db_printf("\n"); 915 } 916 db_print_loc_and_inst(PC_REGS(&ddb_regs)); 917 } 918 919 /* 920 * Write to file. 921 */ 922 void 923 db_write_cmd(db_expr_t address, int have_addr, db_expr_t count, char *modif) 924 { 925 vaddr_t addr; 926 db_expr_t old_value; 927 db_expr_t new_value; 928 int size, wrote_one = 0; 929 char tmpfmt[28]; 930 931 addr = (vaddr_t) address; 932 933 switch (modif[0]) { 934 case 'b': 935 size = 1; 936 break; 937 case 'h': 938 size = 2; 939 break; 940 case 'l': 941 case '\0': 942 size = 4; 943 break; 944 #ifdef __LP64__ 945 case 'q': 946 size = 8; 947 break; 948 #endif 949 default: 950 size = -1; 951 db_error("Unknown size\n"); 952 /*NOTREACHED*/ 953 } 954 955 while (db_expression(&new_value)) { 956 old_value = db_get_value(addr, size, 0); 957 db_printsym(addr, DB_STGY_ANY, db_printf); 958 db_printf("\t\t%s\t", db_format(tmpfmt, sizeof tmpfmt, 959 old_value, DB_FORMAT_N, 0, 8)); 960 db_printf("=\t%s\n", db_format(tmpfmt, sizeof tmpfmt, 961 new_value, DB_FORMAT_N, 0, 8)); 962 db_put_value(addr, size, new_value); 963 addr += size; 964 965 wrote_one = 1; 966 } 967 968 if (!wrote_one) { 969 db_error("Nothing written.\n"); 970 /*NOTREACHED*/ 971 } 972 973 db_next = addr; 974 db_prev = addr - size; 975 976 db_skip_to_eol(); 977 } 978