1 /* $OpenBSD: db_command.c,v 1.78 2017/09/29 09:36:04 mpi 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_variables.h> 55 #include <ddb/db_interface.h> 56 #include <ddb/db_extern.h> 57 58 #include <uvm/uvm_ddb.h> 59 60 /* 61 * Exported global variables 62 */ 63 int db_cmd_loop_done; 64 label_t *db_recover; 65 66 /* 67 * if 'ed' style: 'dot' is set at start of last item printed, 68 * and '+' points to next line. 69 * Otherwise: 'dot' points to next item, '..' points to last. 70 */ 71 boolean_t db_ed_style = TRUE; 72 73 db_addr_t db_dot; /* current location */ 74 db_addr_t db_last_addr; /* last explicit address typed */ 75 db_addr_t db_prev; /* last address examined 76 or written */ 77 db_addr_t db_next; /* next address to be examined 78 or written */ 79 80 int db_cmd_search(char *, struct db_command *, struct db_command **); 81 void db_cmd_list(struct db_command *); 82 void db_ctf_pprint_cmd(db_expr_t, int, db_expr_t,char *); 83 void db_map_print_cmd(db_expr_t, int, db_expr_t, char *); 84 void db_buf_print_cmd(db_expr_t, int, db_expr_t, char *); 85 void db_malloc_print_cmd(db_expr_t, int, db_expr_t, char *); 86 void db_mbuf_print_cmd(db_expr_t, int, db_expr_t, char *); 87 void db_mount_print_cmd(db_expr_t, int, db_expr_t, char *); 88 void db_show_all_mounts(db_expr_t, int, db_expr_t, char *); 89 void db_show_all_vnodes(db_expr_t, int, db_expr_t, char *); 90 void db_show_all_bufs(db_expr_t, int, db_expr_t, char *); 91 void db_object_print_cmd(db_expr_t, int, db_expr_t, char *); 92 void db_page_print_cmd(db_expr_t, int, db_expr_t, char *); 93 void db_extent_print_cmd(db_expr_t, int, db_expr_t, char *); 94 void db_pool_print_cmd(db_expr_t, int, db_expr_t, char *); 95 void db_proc_print_cmd(db_expr_t, int, db_expr_t, char *); 96 void db_uvmexp_print_cmd(db_expr_t, int, db_expr_t, char *); 97 void db_vnode_print_cmd(db_expr_t, int, db_expr_t, char *); 98 void db_nfsreq_print_cmd(db_expr_t, int, db_expr_t, char *); 99 void db_nfsnode_print_cmd(db_expr_t, int, db_expr_t, char *); 100 void db_help_cmd(db_expr_t, int, db_expr_t, char *); 101 void db_fncall(db_expr_t, int, db_expr_t, char *); 102 void db_boot_sync_cmd(db_expr_t, int, db_expr_t, char *); 103 void db_boot_crash_cmd(db_expr_t, int, db_expr_t, char *); 104 void db_boot_dump_cmd(db_expr_t, int, db_expr_t, char *); 105 void db_boot_halt_cmd(db_expr_t, int, db_expr_t, char *); 106 void db_boot_reboot_cmd(db_expr_t, int, db_expr_t, char *); 107 void db_boot_poweroff_cmd(db_expr_t, int, db_expr_t, char *); 108 void db_stack_trace_cmd(db_expr_t, int, db_expr_t, char *); 109 void db_dmesg_cmd(db_expr_t, int, db_expr_t, char *); 110 void db_show_panic_cmd(db_expr_t, int, db_expr_t, char *); 111 void db_bcstats_print_cmd(db_expr_t, int, db_expr_t, char *); 112 void db_struct_offset_cmd(db_expr_t, int, db_expr_t, char *); 113 void db_ctf_show_struct(db_expr_t, int, db_expr_t, char *); 114 void db_show_regs(db_expr_t, boolean_t, db_expr_t, char *); 115 void db_write_cmd(db_expr_t, boolean_t, db_expr_t, char *); 116 void db_witness_display(db_expr_t, int, db_expr_t, char *); 117 void db_witness_list(db_expr_t, int, db_expr_t, char *); 118 void db_witness_list_all(db_expr_t, int, db_expr_t, char *); 119 120 121 /* 122 * Utility routine - discard tokens through end-of-line. 123 */ 124 void 125 db_skip_to_eol(void) 126 { 127 int t; 128 do { 129 t = db_read_token(); 130 } while (t != tEOL); 131 } 132 133 /* 134 * Results of command search. 135 */ 136 #define CMD_UNIQUE 0 137 #define CMD_FOUND 1 138 #define CMD_NONE 2 139 #define CMD_AMBIGUOUS 3 140 141 /* 142 * Search for command prefix. 143 */ 144 int 145 db_cmd_search(char *name, struct db_command *table, struct db_command **cmdp) 146 { 147 struct db_command *cmd; 148 int result = CMD_NONE; 149 150 for (cmd = table; cmd->name != 0; cmd++) { 151 char *lp; 152 char *rp; 153 int c; 154 155 lp = name; 156 rp = cmd->name; 157 while ((c = *lp) == *rp) { 158 if (c == 0) { 159 /* complete match */ 160 *cmdp = cmd; 161 return (CMD_UNIQUE); 162 } 163 lp++; 164 rp++; 165 } 166 if (c == 0) { 167 /* end of name, not end of command - 168 partial match */ 169 if (result == CMD_FOUND) { 170 result = CMD_AMBIGUOUS; 171 /* but keep looking for a full match - 172 this lets us match single letters */ 173 } 174 else { 175 *cmdp = cmd; 176 result = CMD_FOUND; 177 } 178 } 179 } 180 return (result); 181 } 182 183 void 184 db_cmd_list(struct db_command *table) 185 { 186 struct db_command *cmd; 187 188 for (cmd = table; cmd->name != 0; cmd++) { 189 db_printf("%-12s", cmd->name); 190 db_end_line(12); 191 } 192 } 193 194 void 195 db_command(struct db_command **last_cmdp, struct db_command *cmd_table) 196 { 197 struct db_command *cmd; 198 int t; 199 char modif[TOK_STRING_SIZE]; 200 db_expr_t addr, count; 201 boolean_t have_addr = FALSE; 202 int result; 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 = FALSE; 210 count = 1; 211 modif[0] = '\0'; 212 } 213 else if (t == tEXCL) { 214 db_fncall(0, 0, 0, NULL); 215 return; 216 } 217 else if (t != tIDENT) { 218 db_printf("?\n"); 219 db_flush_lex(); 220 return; 221 } 222 else { 223 /* 224 * Search for command 225 */ 226 while (cmd_table) { 227 result = db_cmd_search(db_tok_string, 228 cmd_table, 229 &cmd); 230 switch (result) { 231 case CMD_NONE: 232 db_printf("No such command\n"); 233 db_flush_lex(); 234 return; 235 case CMD_AMBIGUOUS: 236 db_printf("Ambiguous\n"); 237 db_flush_lex(); 238 return; 239 default: 240 break; 241 } 242 if ((cmd_table = cmd->more) != 0) { 243 t = db_read_token(); 244 if (t != tIDENT) { 245 db_cmd_list(cmd_table); 246 db_flush_lex(); 247 return; 248 } 249 } 250 } 251 252 if ((cmd->flag & CS_OWN) == 0) { 253 /* 254 * Standard syntax: 255 * command [/modifier] [addr] [,count] 256 */ 257 t = db_read_token(); 258 if (t == tSLASH) { 259 t = db_read_token(); 260 if (t != tIDENT) { 261 db_printf("Bad modifier\n"); 262 db_flush_lex(); 263 return; 264 } 265 db_strlcpy(modif, db_tok_string, sizeof(modif)); 266 } 267 else { 268 db_unread_token(t); 269 modif[0] = '\0'; 270 } 271 272 if (db_expression(&addr)) { 273 db_dot = (db_addr_t) addr; 274 db_last_addr = db_dot; 275 have_addr = TRUE; 276 } 277 else { 278 addr = (db_expr_t) db_dot; 279 have_addr = FALSE; 280 } 281 t = db_read_token(); 282 if (t == tCOMMA) { 283 if (!db_expression(&count)) { 284 db_printf("Count missing\n"); 285 db_flush_lex(); 286 return; 287 } 288 } 289 else { 290 db_unread_token(t); 291 count = -1; 292 } 293 if ((cmd->flag & CS_MORE) == 0) { 294 db_skip_to_eol(); 295 } 296 } 297 } 298 *last_cmdp = cmd; 299 if (cmd != 0) { 300 /* 301 * Execute the command. 302 */ 303 (*cmd->fcn)(addr, have_addr, count, modif); 304 305 if (cmd->flag & CS_SET_DOT) { 306 /* 307 * If command changes dot, set dot to 308 * previous address displayed (if 'ed' style). 309 */ 310 if (db_ed_style) { 311 db_dot = db_prev; 312 } 313 else { 314 db_dot = db_next; 315 } 316 } 317 else { 318 /* 319 * If command does not change dot, 320 * set 'next' location to be the same. 321 */ 322 db_next = db_dot; 323 } 324 } 325 } 326 327 /*ARGSUSED*/ 328 void 329 db_buf_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 330 { 331 boolean_t full = FALSE; 332 333 if (modif[0] == 'f') 334 full = TRUE; 335 336 vfs_buf_print((void *) addr, full, db_printf); 337 } 338 339 /*ARGSUSED*/ 340 void 341 db_map_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 342 { 343 boolean_t full = FALSE; 344 345 if (modif[0] == 'f') 346 full = TRUE; 347 348 uvm_map_printit((struct vm_map *) addr, full, db_printf); 349 } 350 351 /*ARGSUSED*/ 352 void 353 db_malloc_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 354 { 355 #if defined(MALLOC_DEBUG) 356 extern void debug_malloc_printit(int (*)(const char *, ...), vaddr_t); 357 358 if (!have_addr) 359 addr = 0; 360 361 debug_malloc_printit(db_printf, (vaddr_t)addr); 362 #else 363 malloc_printit(db_printf); 364 #endif 365 } 366 367 /*ARGSUSED*/ 368 void 369 db_mbuf_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 370 { 371 m_print((void *)addr, db_printf); 372 } 373 374 /*ARGSUSED*/ 375 void 376 db_socket_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 377 { 378 so_print((void *)addr, db_printf); 379 } 380 381 /*ARGSUSED*/ 382 void 383 db_mount_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 384 { 385 boolean_t full = FALSE; 386 387 if (modif[0] == 'f') 388 full = TRUE; 389 390 vfs_mount_print((struct mount *) addr, full, db_printf); 391 } 392 393 void 394 db_show_all_mounts(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 395 { 396 boolean_t full = FALSE; 397 struct mount *mp; 398 399 if (modif[0] == 'f') 400 full = TRUE; 401 402 TAILQ_FOREACH(mp, &mountlist, mnt_list) 403 vfs_mount_print(mp, full, db_printf); 404 } 405 406 extern struct pool vnode_pool; 407 void 408 db_show_all_vnodes(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 409 { 410 boolean_t full = FALSE; 411 412 if (modif[0] == 'f') 413 full = TRUE; 414 415 pool_walk(&vnode_pool, full, db_printf, vfs_vnode_print); 416 } 417 418 extern struct pool bufpool; 419 void 420 db_show_all_bufs(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 421 { 422 boolean_t full = FALSE; 423 424 if (modif[0] == 'f') 425 full = TRUE; 426 427 pool_walk(&bufpool, full, db_printf, vfs_buf_print); 428 } 429 430 /*ARGSUSED*/ 431 void 432 db_object_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 433 { 434 boolean_t full = FALSE; 435 436 if (modif[0] == 'f') 437 full = TRUE; 438 439 uvm_object_printit((struct uvm_object *) addr, full, db_printf); 440 } 441 442 /*ARGSUSED*/ 443 void 444 db_page_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 445 { 446 boolean_t full = FALSE; 447 448 if (modif[0] == 'f') 449 full = TRUE; 450 451 uvm_page_printit((struct vm_page *) addr, full, db_printf); 452 } 453 454 /*ARGSUSED*/ 455 void 456 db_vnode_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 457 { 458 boolean_t full = FALSE; 459 460 if (modif[0] == 'f') 461 full = TRUE; 462 463 vfs_vnode_print((void *)addr, full, db_printf); 464 } 465 466 #ifdef NFSCLIENT 467 /*ARGSUSED*/ 468 void 469 db_nfsreq_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, 470 char *modif) 471 { 472 boolean_t full = FALSE; 473 474 if (modif[0] == 'f') 475 full = TRUE; 476 477 nfs_request_print((void *)addr, full, db_printf); 478 } 479 480 /*ARGSUSED*/ 481 void 482 db_nfsnode_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, 483 char *modif) 484 { 485 boolean_t full = FALSE; 486 487 if (modif[0] == 'f') 488 full = TRUE; 489 490 nfs_node_print((void *)addr, full, db_printf); 491 } 492 #endif 493 494 495 /*ARGSUSED*/ 496 void 497 db_show_panic_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 498 { 499 if (panicstr) 500 db_printf("%s\n", panicstr); 501 else 502 db_printf("the kernel did not panic\n"); /* yet */ 503 } 504 505 /*ARGSUSED*/ 506 void 507 db_extent_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 508 { 509 extent_print_all(); 510 } 511 512 /*ARGSUSED*/ 513 void 514 db_pool_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 515 { 516 pool_printit((struct pool *)addr, modif, db_printf); 517 } 518 519 /*ARGSUSED*/ 520 void 521 db_proc_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 522 { 523 if (!have_addr) 524 addr = (db_expr_t)curproc; 525 526 proc_printit((struct proc *)addr, modif, db_printf); 527 } 528 529 /*ARGSUSED*/ 530 void 531 db_uvmexp_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 532 { 533 uvmexp_print(db_printf); 534 } 535 536 void bcstats_print(int (*)(const char *, ...)); 537 538 /*ARGSUSED*/ 539 void 540 db_bcstats_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 541 { 542 bcstats_print(db_printf); 543 } 544 545 /* 546 * 'show' commands 547 */ 548 549 struct db_command db_show_all_cmds[] = { 550 { "procs", db_show_all_procs, 0, NULL }, 551 { "callout", db_show_callout, 0, NULL }, 552 { "pools", db_show_all_pools, 0, NULL }, 553 { "mounts", db_show_all_mounts, 0, NULL }, 554 { "vnodes", db_show_all_vnodes, 0, NULL }, 555 { "bufs", db_show_all_bufs, 0, NULL }, 556 #ifdef NFSCLIENT 557 { "nfsreqs", db_show_all_nfsreqs, 0, NULL }, 558 { "nfsnodes", db_show_all_nfsnodes, 0, NULL }, 559 #endif 560 #ifdef WITNESS 561 { "locks", db_witness_list_all, 0, NULL }, 562 #endif 563 { NULL, NULL, 0, NULL } 564 }; 565 566 struct db_command db_show_cmds[] = { 567 { "all", NULL, 0, db_show_all_cmds }, 568 { "bcstats", db_bcstats_print_cmd, 0, NULL }, 569 { "breaks", db_listbreak_cmd, 0, NULL }, 570 { "buf", db_buf_print_cmd, 0, NULL }, 571 { "extents", db_extent_print_cmd, 0, NULL }, 572 #ifdef WITNESS 573 { "locks", db_witness_list, 0, NULL }, 574 #endif 575 { "malloc", db_malloc_print_cmd, 0, NULL }, 576 { "map", db_map_print_cmd, 0, NULL }, 577 { "mbuf", db_mbuf_print_cmd, 0, NULL }, 578 { "mount", db_mount_print_cmd, 0, NULL }, 579 #ifdef NFSCLIENT 580 { "nfsreq", db_nfsreq_print_cmd, 0, NULL }, 581 { "nfsnode", db_nfsnode_print_cmd, 0, NULL }, 582 #endif 583 { "object", db_object_print_cmd, 0, NULL }, 584 { "page", db_page_print_cmd, 0, NULL }, 585 { "panic", db_show_panic_cmd, 0, NULL }, 586 { "pool", db_pool_print_cmd, 0, NULL }, 587 { "proc", db_proc_print_cmd, 0, NULL }, 588 { "registers", db_show_regs, 0, NULL }, 589 { "socket", db_socket_print_cmd, 0, NULL }, 590 { "struct", db_ctf_show_struct, CS_OWN, NULL }, 591 { "uvmexp", db_uvmexp_print_cmd, 0, NULL }, 592 { "vnode", db_vnode_print_cmd, 0, NULL }, 593 { "watches", db_listwatch_cmd, 0, NULL }, 594 #ifdef WITNESS 595 { "witness", db_witness_display, 0, NULL }, 596 #endif 597 { NULL, NULL, 0, NULL } 598 }; 599 600 struct db_command db_boot_cmds[] = { 601 { "sync", db_boot_sync_cmd, 0, 0 }, 602 { "crash", db_boot_crash_cmd, 0, 0 }, 603 { "dump", db_boot_dump_cmd, 0, 0 }, 604 { "halt", db_boot_halt_cmd, 0, 0 }, 605 { "reboot", db_boot_reboot_cmd, 0, 0 }, 606 { "poweroff", db_boot_poweroff_cmd, 0, 0 }, 607 { NULL, } 608 }; 609 610 struct db_command db_command_table[] = { 611 #ifdef DB_MACHINE_COMMANDS 612 /* this must be the first entry, if it exists */ 613 { "machine", NULL, 0, NULL}, 614 #endif 615 { "kill", db_kill_cmd, 0, NULL }, 616 { "print", db_print_cmd, 0, NULL }, 617 { "p", db_print_cmd, 0, NULL }, 618 { "pprint", db_ctf_pprint_cmd, CS_OWN, NULL }, 619 { "examine", db_examine_cmd, CS_SET_DOT, NULL }, 620 { "x", db_examine_cmd, CS_SET_DOT, NULL }, 621 { "search", db_search_cmd, CS_OWN|CS_SET_DOT, NULL }, 622 { "set", db_set_cmd, CS_OWN, NULL }, 623 { "write", db_write_cmd, CS_MORE|CS_SET_DOT, NULL }, 624 { "w", db_write_cmd, CS_MORE|CS_SET_DOT, NULL }, 625 { "delete", db_delete_cmd, 0, NULL }, 626 { "d", db_delete_cmd, 0, NULL }, 627 { "break", db_breakpoint_cmd, 0, NULL }, 628 { "dwatch", db_deletewatch_cmd, 0, NULL }, 629 { "watch", db_watchpoint_cmd, CS_MORE, NULL }, 630 { "step", db_single_step_cmd, 0, NULL }, 631 { "s", db_single_step_cmd, 0, NULL }, 632 { "continue", db_continue_cmd, 0, NULL }, 633 { "c", db_continue_cmd, 0, NULL }, 634 { "until", db_trace_until_call_cmd,0, NULL }, 635 { "next", db_trace_until_matching_cmd,0, NULL }, 636 { "match", db_trace_until_matching_cmd,0, NULL }, 637 { "trace", db_stack_trace_cmd, 0, NULL }, 638 { "call", db_fncall, CS_OWN, NULL }, 639 { "ps", db_show_all_procs, 0, NULL }, 640 { "callout", db_show_callout, 0, NULL }, 641 { "show", NULL, 0, db_show_cmds }, 642 { "boot", NULL, 0, db_boot_cmds }, 643 { "help", db_help_cmd, 0, NULL }, 644 { "hangman", db_hangman, 0, NULL }, 645 { "dmesg", db_dmesg_cmd, 0, NULL }, 646 { NULL, NULL, 0, NULL } 647 }; 648 649 #ifdef DB_MACHINE_COMMANDS 650 651 /* this function should be called to install the machine dependent 652 commands. It should be called before the debugger is enabled */ 653 void db_machine_commands_install(struct db_command *ptr) 654 { 655 db_command_table[0].more = ptr; 656 return; 657 } 658 659 #endif 660 661 struct db_command *db_last_command = NULL; 662 663 void 664 db_help_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 665 { 666 db_cmd_list(db_command_table); 667 } 668 669 void 670 db_command_loop(void) 671 { 672 label_t db_jmpbuf; 673 label_t *savejmp; 674 extern int db_output_line; 675 676 /* 677 * Initialize 'prev' and 'next' to dot. 678 */ 679 db_prev = db_dot; 680 db_next = db_dot; 681 682 db_cmd_loop_done = 0; 683 684 savejmp = db_recover; 685 db_recover = &db_jmpbuf; 686 (void) setjmp(&db_jmpbuf); 687 688 while (!db_cmd_loop_done) { 689 690 if (db_print_position() != 0) 691 db_printf("\n"); 692 db_output_line = 0; 693 694 #ifdef MULTIPROCESSOR 695 db_printf("ddb{%d}> ", CPU_INFO_UNIT(curcpu())); 696 #else 697 db_printf("ddb> "); 698 #endif 699 (void) db_read_line(); 700 701 db_command(&db_last_command, db_command_table); 702 } 703 704 db_recover = savejmp; 705 } 706 707 void 708 db_error(char *s) 709 { 710 if (s) 711 db_printf("%s", s); 712 db_flush_lex(); 713 if (db_recover != NULL) 714 longjmp(db_recover); 715 } 716 717 718 /* 719 * Call random function: 720 * !expr(arg,arg,arg) 721 */ 722 /*ARGSUSED*/ 723 void 724 db_fncall(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 725 { 726 db_expr_t fn_addr; 727 #define MAXARGS 11 728 db_expr_t args[MAXARGS]; 729 int nargs = 0; 730 db_expr_t retval; 731 db_expr_t (*func)(db_expr_t, ...); 732 int t; 733 char tmpfmt[28]; 734 735 if (!db_expression(&fn_addr)) { 736 db_printf("Bad function\n"); 737 db_flush_lex(); 738 return; 739 } 740 func = (db_expr_t (*)(db_expr_t, ...)) fn_addr; 741 742 t = db_read_token(); 743 if (t == tLPAREN) { 744 if (db_expression(&args[0])) { 745 nargs++; 746 while ((t = db_read_token()) == tCOMMA) { 747 if (nargs == MAXARGS) { 748 db_printf("Too many arguments\n"); 749 db_flush_lex(); 750 return; 751 } 752 if (!db_expression(&args[nargs])) { 753 db_printf("Argument missing\n"); 754 db_flush_lex(); 755 return; 756 } 757 nargs++; 758 } 759 db_unread_token(t); 760 } 761 if (db_read_token() != tRPAREN) { 762 db_printf("?\n"); 763 db_flush_lex(); 764 return; 765 } 766 } 767 db_skip_to_eol(); 768 769 while (nargs < MAXARGS) { 770 args[nargs++] = 0; 771 } 772 773 retval = (*func)(args[0], args[1], args[2], args[3], args[4], 774 args[5], args[6], args[7], args[8], args[9]); 775 db_printf("%s\n", db_format(tmpfmt, sizeof tmpfmt, retval, 776 DB_FORMAT_N, 1, 0)); 777 } 778 779 void 780 db_boot_sync_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 781 { 782 reboot(RB_AUTOBOOT | RB_TIMEBAD | RB_USERREQ); 783 } 784 785 void 786 db_boot_crash_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 787 { 788 reboot(RB_NOSYNC | RB_DUMP | RB_TIMEBAD | RB_USERREQ); 789 } 790 791 void 792 db_boot_dump_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 793 { 794 reboot(RB_DUMP | RB_TIMEBAD | RB_USERREQ); 795 } 796 797 void 798 db_boot_halt_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 799 { 800 reboot(RB_NOSYNC | RB_HALT | RB_TIMEBAD | RB_USERREQ); 801 } 802 803 void 804 db_boot_reboot_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 805 { 806 reboot(RB_AUTOBOOT | RB_NOSYNC | RB_TIMEBAD | RB_USERREQ); 807 } 808 809 void 810 db_boot_poweroff_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 811 { 812 reboot(RB_NOSYNC | RB_HALT | RB_POWERDOWN | RB_TIMEBAD | RB_USERREQ); 813 } 814 815 void 816 db_dmesg_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 817 { 818 int i, off; 819 char *p; 820 821 if (!msgbufp || msgbufp->msg_magic != MSG_MAGIC) 822 return; 823 off = msgbufp->msg_bufx; 824 if (off > msgbufp->msg_bufs) 825 off = 0; 826 for (i = 0, p = msgbufp->msg_bufc + off; 827 i < msgbufp->msg_bufs; i++, p++) { 828 if (p >= msgbufp->msg_bufc + msgbufp->msg_bufs) 829 p = msgbufp->msg_bufc; 830 if (*p != '\0') 831 db_putchar(*p); 832 } 833 db_putchar('\n'); 834 } 835 836 void 837 db_stack_trace_cmd(db_expr_t addr, boolean_t have_addr, db_expr_t count, 838 char *modif) 839 { 840 db_stack_trace_print(addr, have_addr, count, modif, db_printf); 841 } 842 843 void 844 db_show_regs(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 845 { 846 struct db_variable *regp; 847 db_expr_t value, offset; 848 char * name; 849 char tmpfmt[28]; 850 851 for (regp = db_regs; regp < db_eregs; regp++) { 852 db_read_variable(regp, &value); 853 db_printf("%-12s%s", regp->name, db_format(tmpfmt, sizeof tmpfmt, 854 (long)value, DB_FORMAT_N, 1, sizeof(long) * 3)); 855 db_find_xtrn_sym_and_offset((db_addr_t)value, &name, &offset); 856 if (name != 0 && offset <= db_maxoff && offset != value) { 857 db_printf("\t%s", name); 858 if (offset != 0) 859 db_printf("+%s", db_format(tmpfmt, sizeof tmpfmt, 860 (long)offset, DB_FORMAT_R, 1, 0)); 861 } 862 db_printf("\n"); 863 } 864 db_print_loc_and_inst(PC_REGS(&ddb_regs)); 865 } 866 867 /* 868 * Write to file. 869 */ 870 /*ARGSUSED*/ 871 void 872 db_write_cmd(db_expr_t address, boolean_t have_addr, db_expr_t count, 873 char *modif) 874 { 875 db_addr_t addr; 876 db_expr_t old_value; 877 db_expr_t new_value; 878 int size; 879 boolean_t wrote_one = FALSE; 880 char tmpfmt[28]; 881 882 addr = (db_addr_t) address; 883 884 switch (modif[0]) { 885 case 'b': 886 size = 1; 887 break; 888 case 'h': 889 size = 2; 890 break; 891 case 'l': 892 case '\0': 893 size = 4; 894 break; 895 #ifdef __LP64__ 896 case 'q': 897 size = 8; 898 break; 899 #endif 900 default: 901 size = -1; 902 db_error("Unknown size\n"); 903 /*NOTREACHED*/ 904 } 905 906 while (db_expression(&new_value)) { 907 old_value = db_get_value(addr, size, FALSE); 908 db_printsym(addr, DB_STGY_ANY, db_printf); 909 db_printf("\t\t%s\t", db_format(tmpfmt, sizeof tmpfmt, 910 old_value, DB_FORMAT_N, 0, 8)); 911 db_printf("=\t%s\n", db_format(tmpfmt, sizeof tmpfmt, 912 new_value, DB_FORMAT_N, 0, 8)); 913 db_put_value(addr, size, new_value); 914 addr += size; 915 916 wrote_one = TRUE; 917 } 918 919 if (!wrote_one) { 920 db_error("Nothing written.\n"); 921 /*NOTREACHED*/ 922 } 923 924 db_next = addr; 925 db_prev = addr - size; 926 927 db_skip_to_eol(); 928 } 929