1 /* $OpenBSD: db_command.c,v 1.71 2016/04/19 12:23:25 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_map_print_cmd(db_expr_t, int, db_expr_t, char *); 83 void db_buf_print_cmd(db_expr_t, int, db_expr_t, char *); 84 void db_malloc_print_cmd(db_expr_t, int, db_expr_t, char *); 85 void db_mbuf_print_cmd(db_expr_t, int, db_expr_t, char *); 86 void db_mount_print_cmd(db_expr_t, int, db_expr_t, char *); 87 void db_show_all_mounts(db_expr_t, int, db_expr_t, char *); 88 void db_show_all_vnodes(db_expr_t, int, db_expr_t, char *); 89 void db_show_all_bufs(db_expr_t, int, db_expr_t, char *); 90 void db_object_print_cmd(db_expr_t, int, db_expr_t, char *); 91 void db_page_print_cmd(db_expr_t, int, db_expr_t, char *); 92 void db_extent_print_cmd(db_expr_t, int, db_expr_t, char *); 93 void db_pool_print_cmd(db_expr_t, int, db_expr_t, char *); 94 void db_proc_print_cmd(db_expr_t, int, db_expr_t, char *); 95 void db_uvmexp_print_cmd(db_expr_t, int, db_expr_t, char *); 96 void db_vnode_print_cmd(db_expr_t, int, db_expr_t, char *); 97 void db_nfsreq_print_cmd(db_expr_t, int, db_expr_t, char *); 98 void db_nfsnode_print_cmd(db_expr_t, int, db_expr_t, char *); 99 void db_help_cmd(db_expr_t, int, db_expr_t, char *); 100 void db_fncall(db_expr_t, int, db_expr_t, char *); 101 void db_boot_sync_cmd(db_expr_t, int, db_expr_t, char *); 102 void db_boot_crash_cmd(db_expr_t, int, db_expr_t, char *); 103 void db_boot_dump_cmd(db_expr_t, int, db_expr_t, char *); 104 void db_boot_halt_cmd(db_expr_t, int, db_expr_t, char *); 105 void db_boot_reboot_cmd(db_expr_t, int, db_expr_t, char *); 106 void db_boot_poweroff_cmd(db_expr_t, int, db_expr_t, char *); 107 void db_stack_trace_cmd(db_expr_t, int, db_expr_t, char *); 108 void db_dmesg_cmd(db_expr_t, int, db_expr_t, char *); 109 void db_show_panic_cmd(db_expr_t, int, db_expr_t, char *); 110 void db_bcstats_print_cmd(db_expr_t, int, db_expr_t, char *); 111 void db_struct_offset_cmd(db_expr_t, int, db_expr_t, char *); 112 void db_struct_layout_cmd(db_expr_t, int, db_expr_t, char *); 113 void db_show_regs(db_expr_t, boolean_t, db_expr_t, char *); 114 void db_write_cmd(db_expr_t, boolean_t, db_expr_t, char *); 115 116 117 /* 118 * Utility routine - discard tokens through end-of-line. 119 */ 120 void 121 db_skip_to_eol(void) 122 { 123 int t; 124 do { 125 t = db_read_token(); 126 } while (t != tEOL); 127 } 128 129 /* 130 * Results of command search. 131 */ 132 #define CMD_UNIQUE 0 133 #define CMD_FOUND 1 134 #define CMD_NONE 2 135 #define CMD_AMBIGUOUS 3 136 137 /* 138 * Search for command prefix. 139 */ 140 int 141 db_cmd_search(char *name, struct db_command *table, struct db_command **cmdp) 142 { 143 struct db_command *cmd; 144 int result = CMD_NONE; 145 146 for (cmd = table; cmd->name != 0; cmd++) { 147 char *lp; 148 char *rp; 149 int c; 150 151 lp = name; 152 rp = cmd->name; 153 while ((c = *lp) == *rp) { 154 if (c == 0) { 155 /* complete match */ 156 *cmdp = cmd; 157 return (CMD_UNIQUE); 158 } 159 lp++; 160 rp++; 161 } 162 if (c == 0) { 163 /* end of name, not end of command - 164 partial match */ 165 if (result == CMD_FOUND) { 166 result = CMD_AMBIGUOUS; 167 /* but keep looking for a full match - 168 this lets us match single letters */ 169 } 170 else { 171 *cmdp = cmd; 172 result = CMD_FOUND; 173 } 174 } 175 } 176 return (result); 177 } 178 179 void 180 db_cmd_list(struct db_command *table) 181 { 182 struct db_command *cmd; 183 184 for (cmd = table; cmd->name != 0; cmd++) { 185 db_printf("%-12s", cmd->name); 186 db_end_line(12); 187 } 188 } 189 190 void 191 db_command(struct db_command **last_cmdp, struct db_command *cmd_table) 192 { 193 struct db_command *cmd; 194 int t; 195 char modif[TOK_STRING_SIZE]; 196 db_expr_t addr, count; 197 boolean_t have_addr = FALSE; 198 int result; 199 200 t = db_read_token(); 201 if (t == tEOL) { 202 /* empty line repeats last command, at 'next' */ 203 cmd = *last_cmdp; 204 addr = (db_expr_t)db_next; 205 have_addr = FALSE; 206 count = 1; 207 modif[0] = '\0'; 208 } 209 else if (t == tEXCL) { 210 db_fncall(0, 0, 0, NULL); 211 return; 212 } 213 else if (t != tIDENT) { 214 db_printf("?\n"); 215 db_flush_lex(); 216 return; 217 } 218 else { 219 /* 220 * Search for command 221 */ 222 while (cmd_table) { 223 result = db_cmd_search(db_tok_string, 224 cmd_table, 225 &cmd); 226 switch (result) { 227 case CMD_NONE: 228 db_printf("No such command\n"); 229 db_flush_lex(); 230 return; 231 case CMD_AMBIGUOUS: 232 db_printf("Ambiguous\n"); 233 db_flush_lex(); 234 return; 235 default: 236 break; 237 } 238 if ((cmd_table = cmd->more) != 0) { 239 t = db_read_token(); 240 if (t != tIDENT) { 241 db_cmd_list(cmd_table); 242 db_flush_lex(); 243 return; 244 } 245 } 246 } 247 248 if ((cmd->flag & CS_OWN) == 0) { 249 /* 250 * Standard syntax: 251 * command [/modifier] [addr] [,count] 252 */ 253 t = db_read_token(); 254 if (t == tSLASH) { 255 t = db_read_token(); 256 if (t != tIDENT) { 257 db_printf("Bad modifier\n"); 258 db_flush_lex(); 259 return; 260 } 261 db_strlcpy(modif, db_tok_string, sizeof(modif)); 262 } 263 else { 264 db_unread_token(t); 265 modif[0] = '\0'; 266 } 267 268 if (db_expression(&addr)) { 269 db_dot = (db_addr_t) addr; 270 db_last_addr = db_dot; 271 have_addr = TRUE; 272 } 273 else { 274 addr = (db_expr_t) db_dot; 275 have_addr = FALSE; 276 } 277 t = db_read_token(); 278 if (t == tCOMMA) { 279 if (!db_expression(&count)) { 280 db_printf("Count missing\n"); 281 db_flush_lex(); 282 return; 283 } 284 } 285 else { 286 db_unread_token(t); 287 count = -1; 288 } 289 if ((cmd->flag & CS_MORE) == 0) { 290 db_skip_to_eol(); 291 } 292 } 293 } 294 *last_cmdp = cmd; 295 if (cmd != 0) { 296 /* 297 * Execute the command. 298 */ 299 (*cmd->fcn)(addr, have_addr, count, modif); 300 301 if (cmd->flag & CS_SET_DOT) { 302 /* 303 * If command changes dot, set dot to 304 * previous address displayed (if 'ed' style). 305 */ 306 if (db_ed_style) { 307 db_dot = db_prev; 308 } 309 else { 310 db_dot = db_next; 311 } 312 } 313 else { 314 /* 315 * If command does not change dot, 316 * set 'next' location to be the same. 317 */ 318 db_next = db_dot; 319 } 320 } 321 } 322 323 /*ARGSUSED*/ 324 void 325 db_buf_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 326 { 327 boolean_t full = FALSE; 328 329 if (modif[0] == 'f') 330 full = TRUE; 331 332 vfs_buf_print((void *) addr, full, db_printf); 333 } 334 335 /*ARGSUSED*/ 336 void 337 db_map_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 338 { 339 boolean_t full = FALSE; 340 341 if (modif[0] == 'f') 342 full = TRUE; 343 344 uvm_map_printit((struct vm_map *) addr, full, db_printf); 345 } 346 347 /*ARGSUSED*/ 348 void 349 db_malloc_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 350 { 351 #if defined(MALLOC_DEBUG) 352 extern void debug_malloc_printit(int (*)(const char *, ...), vaddr_t); 353 354 if (!have_addr) 355 addr = 0; 356 357 debug_malloc_printit(db_printf, (vaddr_t)addr); 358 #else 359 malloc_printit(db_printf); 360 #endif 361 } 362 363 /*ARGSUSED*/ 364 void 365 db_mbuf_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 366 { 367 m_print((void *)addr, db_printf); 368 } 369 370 /*ARGSUSED*/ 371 void 372 db_socket_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 373 { 374 so_print((void *)addr, db_printf); 375 } 376 377 /*ARGSUSED*/ 378 void 379 db_mount_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 380 { 381 boolean_t full = FALSE; 382 383 if (modif[0] == 'f') 384 full = TRUE; 385 386 vfs_mount_print((struct mount *) addr, full, db_printf); 387 } 388 389 void 390 db_show_all_mounts(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 391 { 392 boolean_t full = FALSE; 393 struct mount *mp; 394 395 if (modif[0] == 'f') 396 full = TRUE; 397 398 TAILQ_FOREACH(mp, &mountlist, mnt_list) 399 vfs_mount_print(mp, full, db_printf); 400 } 401 402 extern struct pool vnode_pool; 403 void 404 db_show_all_vnodes(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 405 { 406 boolean_t full = FALSE; 407 408 if (modif[0] == 'f') 409 full = TRUE; 410 411 pool_walk(&vnode_pool, full, db_printf, vfs_vnode_print); 412 } 413 414 extern struct pool bufpool; 415 void 416 db_show_all_bufs(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 417 { 418 boolean_t full = FALSE; 419 420 if (modif[0] == 'f') 421 full = TRUE; 422 423 pool_walk(&bufpool, full, db_printf, vfs_buf_print); 424 } 425 426 /*ARGSUSED*/ 427 void 428 db_object_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 429 { 430 boolean_t full = FALSE; 431 432 if (modif[0] == 'f') 433 full = TRUE; 434 435 uvm_object_printit((struct uvm_object *) addr, full, db_printf); 436 } 437 438 /*ARGSUSED*/ 439 void 440 db_page_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 441 { 442 boolean_t full = FALSE; 443 444 if (modif[0] == 'f') 445 full = TRUE; 446 447 uvm_page_printit((struct vm_page *) addr, full, db_printf); 448 } 449 450 /*ARGSUSED*/ 451 void 452 db_vnode_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 453 { 454 boolean_t full = FALSE; 455 456 if (modif[0] == 'f') 457 full = TRUE; 458 459 vfs_vnode_print((void *)addr, full, db_printf); 460 } 461 462 #ifdef NFSCLIENT 463 /*ARGSUSED*/ 464 void 465 db_nfsreq_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, 466 char *modif) 467 { 468 boolean_t full = FALSE; 469 470 if (modif[0] == 'f') 471 full = TRUE; 472 473 nfs_request_print((void *)addr, full, db_printf); 474 } 475 476 /*ARGSUSED*/ 477 void 478 db_nfsnode_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, 479 char *modif) 480 { 481 boolean_t full = FALSE; 482 483 if (modif[0] == 'f') 484 full = TRUE; 485 486 nfs_node_print((void *)addr, full, db_printf); 487 } 488 #endif 489 490 491 /*ARGSUSED*/ 492 void 493 db_show_panic_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 494 { 495 if (panicstr) 496 db_printf("%s\n", panicstr); 497 else 498 db_printf("the kernel did not panic\n"); /* yet */ 499 } 500 501 /*ARGSUSED*/ 502 void 503 db_extent_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 504 { 505 extent_print_all(); 506 } 507 508 /*ARGSUSED*/ 509 void 510 db_pool_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 511 { 512 pool_printit((struct pool *)addr, modif, db_printf); 513 } 514 515 /*ARGSUSED*/ 516 void 517 db_proc_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 518 { 519 if (!have_addr) 520 addr = (db_expr_t)curproc; 521 522 proc_printit((struct proc *)addr, modif, db_printf); 523 } 524 525 /*ARGSUSED*/ 526 void 527 db_uvmexp_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 528 { 529 uvmexp_print(db_printf); 530 } 531 532 void bcstats_print(int (*)(const char *, ...)); 533 534 /*ARGSUSED*/ 535 void 536 db_bcstats_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 537 { 538 bcstats_print(db_printf); 539 } 540 541 /* 542 * 'show' commands 543 */ 544 545 struct db_command db_show_all_cmds[] = { 546 { "procs", db_show_all_procs, 0, NULL }, 547 { "callout", db_show_callout, 0, NULL }, 548 { "pools", db_show_all_pools, 0, NULL }, 549 { "mounts", db_show_all_mounts, 0, NULL }, 550 { "vnodes", db_show_all_vnodes, 0, NULL }, 551 { "bufs", db_show_all_bufs, 0, NULL }, 552 #ifdef NFSCLIENT 553 { "nfsreqs", db_show_all_nfsreqs, 0, NULL }, 554 { "nfsnodes", db_show_all_nfsnodes, 0, NULL }, 555 #endif 556 { NULL, NULL, 0, NULL } 557 }; 558 559 struct db_command db_show_cmds[] = { 560 { "all", NULL, 0, db_show_all_cmds }, 561 { "bcstats", db_bcstats_print_cmd, 0, NULL }, 562 { "breaks", db_listbreak_cmd, 0, NULL }, 563 { "buf", db_buf_print_cmd, 0, NULL }, 564 { "extents", db_extent_print_cmd, 0, NULL }, 565 { "malloc", db_malloc_print_cmd, 0, NULL }, 566 { "map", db_map_print_cmd, 0, NULL }, 567 { "mbuf", db_mbuf_print_cmd, 0, NULL }, 568 { "mount", db_mount_print_cmd, 0, NULL }, 569 #ifdef NFSCLIENT 570 { "nfsreq", db_nfsreq_print_cmd, 0, NULL }, 571 { "nfsnode", db_nfsnode_print_cmd, 0, NULL }, 572 #endif 573 { "object", db_object_print_cmd, 0, NULL }, 574 #ifdef DDB_STRUCT 575 { "offset", db_struct_offset_cmd, CS_OWN, NULL }, 576 #endif 577 { "page", db_page_print_cmd, 0, NULL }, 578 { "panic", db_show_panic_cmd, 0, NULL }, 579 { "pool", db_pool_print_cmd, 0, NULL }, 580 { "proc", db_proc_print_cmd, 0, NULL }, 581 { "registers", db_show_regs, 0, NULL }, 582 { "socket", db_socket_print_cmd, 0, NULL }, 583 #ifdef DDB_STRUCT 584 { "struct", db_struct_layout_cmd, CS_OWN, NULL }, 585 #endif 586 { "uvmexp", db_uvmexp_print_cmd, 0, NULL }, 587 { "vnode", db_vnode_print_cmd, 0, NULL }, 588 { "watches", db_listwatch_cmd, 0, NULL }, 589 { NULL, NULL, 0, NULL } 590 }; 591 592 struct db_command db_boot_cmds[] = { 593 { "sync", db_boot_sync_cmd, 0, 0 }, 594 { "crash", db_boot_crash_cmd, 0, 0 }, 595 { "dump", db_boot_dump_cmd, 0, 0 }, 596 { "halt", db_boot_halt_cmd, 0, 0 }, 597 { "reboot", db_boot_reboot_cmd, 0, 0 }, 598 { "poweroff", db_boot_poweroff_cmd, 0, 0 }, 599 { NULL, } 600 }; 601 602 struct db_command db_command_table[] = { 603 #ifdef DB_MACHINE_COMMANDS 604 /* this must be the first entry, if it exists */ 605 { "machine", NULL, 0, NULL}, 606 #endif 607 { "print", db_print_cmd, 0, NULL }, 608 { "examine", db_examine_cmd, CS_SET_DOT, NULL }, 609 { "x", db_examine_cmd, CS_SET_DOT, NULL }, 610 { "search", db_search_cmd, CS_OWN|CS_SET_DOT, NULL }, 611 { "set", db_set_cmd, CS_OWN, NULL }, 612 { "write", db_write_cmd, CS_MORE|CS_SET_DOT, NULL }, 613 { "w", db_write_cmd, CS_MORE|CS_SET_DOT, NULL }, 614 { "delete", db_delete_cmd, 0, NULL }, 615 { "d", db_delete_cmd, 0, NULL }, 616 { "break", db_breakpoint_cmd, 0, NULL }, 617 { "dwatch", db_deletewatch_cmd, 0, NULL }, 618 { "watch", db_watchpoint_cmd, CS_MORE, NULL }, 619 { "step", db_single_step_cmd, 0, NULL }, 620 { "s", db_single_step_cmd, 0, NULL }, 621 { "continue", db_continue_cmd, 0, NULL }, 622 { "c", db_continue_cmd, 0, NULL }, 623 { "until", db_trace_until_call_cmd,0, NULL }, 624 { "next", db_trace_until_matching_cmd,0, NULL }, 625 { "match", db_trace_until_matching_cmd,0, NULL }, 626 { "trace", db_stack_trace_cmd, 0, NULL }, 627 { "call", db_fncall, CS_OWN, NULL }, 628 { "ps", db_show_all_procs, 0, NULL }, 629 { "callout", db_show_callout, 0, NULL }, 630 { "show", NULL, 0, db_show_cmds }, 631 { "boot", NULL, 0, db_boot_cmds }, 632 { "help", db_help_cmd, 0, NULL }, 633 { "hangman", db_hangman, 0, NULL }, 634 { "dmesg", db_dmesg_cmd, 0, NULL }, 635 { NULL, NULL, 0, NULL } 636 }; 637 638 #ifdef DB_MACHINE_COMMANDS 639 640 /* this function should be called to install the machine dependent 641 commands. It should be called before the debugger is enabled */ 642 void db_machine_commands_install(struct db_command *ptr) 643 { 644 db_command_table[0].more = ptr; 645 return; 646 } 647 648 #endif 649 650 struct db_command *db_last_command = NULL; 651 652 void 653 db_help_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 654 { 655 db_cmd_list(db_command_table); 656 } 657 658 void 659 db_command_loop(void) 660 { 661 label_t db_jmpbuf; 662 label_t *savejmp; 663 extern int db_output_line; 664 665 /* 666 * Initialize 'prev' and 'next' to dot. 667 */ 668 db_prev = db_dot; 669 db_next = db_dot; 670 671 db_cmd_loop_done = 0; 672 673 savejmp = db_recover; 674 db_recover = &db_jmpbuf; 675 (void) setjmp(&db_jmpbuf); 676 677 while (!db_cmd_loop_done) { 678 679 if (db_print_position() != 0) 680 db_printf("\n"); 681 db_output_line = 0; 682 683 #ifdef MULTIPROCESSOR 684 db_printf("ddb{%d}> ", CPU_INFO_UNIT(curcpu())); 685 #else 686 db_printf("ddb> "); 687 #endif 688 (void) db_read_line(); 689 690 db_command(&db_last_command, db_command_table); 691 } 692 693 db_recover = savejmp; 694 } 695 696 void 697 db_error(char *s) 698 { 699 if (s) 700 db_printf("%s", s); 701 db_flush_lex(); 702 if (db_recover != NULL) 703 longjmp(db_recover); 704 } 705 706 707 /* 708 * Call random function: 709 * !expr(arg,arg,arg) 710 */ 711 /*ARGSUSED*/ 712 void 713 db_fncall(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 714 { 715 db_expr_t fn_addr; 716 #define MAXARGS 11 717 db_expr_t args[MAXARGS]; 718 int nargs = 0; 719 db_expr_t retval; 720 db_expr_t (*func)(db_expr_t, ...); 721 int t; 722 char tmpfmt[28]; 723 724 if (!db_expression(&fn_addr)) { 725 db_printf("Bad function\n"); 726 db_flush_lex(); 727 return; 728 } 729 func = (db_expr_t (*)(db_expr_t, ...)) fn_addr; 730 731 t = db_read_token(); 732 if (t == tLPAREN) { 733 if (db_expression(&args[0])) { 734 nargs++; 735 while ((t = db_read_token()) == tCOMMA) { 736 if (nargs == MAXARGS) { 737 db_printf("Too many arguments\n"); 738 db_flush_lex(); 739 return; 740 } 741 if (!db_expression(&args[nargs])) { 742 db_printf("Argument missing\n"); 743 db_flush_lex(); 744 return; 745 } 746 nargs++; 747 } 748 db_unread_token(t); 749 } 750 if (db_read_token() != tRPAREN) { 751 db_printf("?\n"); 752 db_flush_lex(); 753 return; 754 } 755 } 756 db_skip_to_eol(); 757 758 while (nargs < MAXARGS) { 759 args[nargs++] = 0; 760 } 761 762 retval = (*func)(args[0], args[1], args[2], args[3], args[4], 763 args[5], args[6], args[7], args[8], args[9]); 764 db_printf("%s\n", db_format(tmpfmt, sizeof tmpfmt, retval, 765 DB_FORMAT_N, 1, 0)); 766 } 767 768 void 769 db_boot_sync_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 770 { 771 reboot(RB_AUTOBOOT | RB_TIMEBAD | RB_USERREQ); 772 } 773 774 void 775 db_boot_crash_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 776 { 777 reboot(RB_NOSYNC | RB_DUMP | RB_TIMEBAD | RB_USERREQ); 778 } 779 780 void 781 db_boot_dump_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 782 { 783 reboot(RB_DUMP | RB_TIMEBAD | RB_USERREQ); 784 } 785 786 void 787 db_boot_halt_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 788 { 789 reboot(RB_NOSYNC | RB_HALT | RB_TIMEBAD | RB_USERREQ); 790 } 791 792 void 793 db_boot_reboot_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 794 { 795 reboot(RB_AUTOBOOT | RB_NOSYNC | RB_TIMEBAD | RB_USERREQ); 796 } 797 798 void 799 db_boot_poweroff_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 800 { 801 reboot(RB_NOSYNC | RB_HALT | RB_POWERDOWN | RB_TIMEBAD | RB_USERREQ); 802 } 803 804 void 805 db_dmesg_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 806 { 807 int i, off; 808 char *p; 809 810 if (!msgbufp || msgbufp->msg_magic != MSG_MAGIC) 811 return; 812 off = msgbufp->msg_bufx; 813 if (off > msgbufp->msg_bufs) 814 off = 0; 815 for (i = 0, p = msgbufp->msg_bufc + off; 816 i < msgbufp->msg_bufs; i++, p++) { 817 if (p >= msgbufp->msg_bufc + msgbufp->msg_bufs) 818 p = msgbufp->msg_bufc; 819 if (*p != '\0') 820 db_putchar(*p); 821 } 822 db_putchar('\n'); 823 } 824 825 void 826 db_stack_trace_cmd(db_expr_t addr, boolean_t have_addr, db_expr_t count, 827 char *modif) 828 { 829 db_stack_trace_print(addr, have_addr, count, modif, db_printf); 830 } 831 832 void 833 db_show_regs(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 834 { 835 struct db_variable *regp; 836 db_expr_t value, offset; 837 char * name; 838 char tmpfmt[28]; 839 840 for (regp = db_regs; regp < db_eregs; regp++) { 841 db_read_variable(regp, &value); 842 db_printf("%-12s%s", regp->name, db_format(tmpfmt, sizeof tmpfmt, 843 (long)value, DB_FORMAT_N, 1, sizeof(long) * 3)); 844 db_find_xtrn_sym_and_offset((db_addr_t)value, &name, &offset); 845 if (name != 0 && offset <= db_maxoff && offset != value) { 846 db_printf("\t%s", name); 847 if (offset != 0) 848 db_printf("+%s", db_format(tmpfmt, sizeof tmpfmt, 849 (long)offset, DB_FORMAT_R, 1, 0)); 850 } 851 db_printf("\n"); 852 } 853 db_print_loc_and_inst(PC_REGS(&ddb_regs)); 854 } 855 856 /* 857 * Write to file. 858 */ 859 /*ARGSUSED*/ 860 void 861 db_write_cmd(db_expr_t address, boolean_t have_addr, db_expr_t count, 862 char *modif) 863 { 864 db_addr_t addr; 865 db_expr_t old_value; 866 db_expr_t new_value; 867 int size; 868 boolean_t wrote_one = FALSE; 869 char tmpfmt[28]; 870 871 addr = (db_addr_t) address; 872 873 switch (modif[0]) { 874 case 'b': 875 size = 1; 876 break; 877 case 'h': 878 size = 2; 879 break; 880 case 'l': 881 case '\0': 882 size = 4; 883 break; 884 #ifdef __LP64__ 885 case 'q': 886 size = 8; 887 break; 888 #endif 889 default: 890 size = -1; 891 db_error("Unknown size\n"); 892 /*NOTREACHED*/ 893 } 894 895 while (db_expression(&new_value)) { 896 old_value = db_get_value(addr, size, FALSE); 897 db_printsym(addr, DB_STGY_ANY, db_printf); 898 db_printf("\t\t%s\t", db_format(tmpfmt, sizeof tmpfmt, 899 old_value, DB_FORMAT_N, 0, 8)); 900 db_printf("=\t%s\n", db_format(tmpfmt, sizeof tmpfmt, 901 new_value, DB_FORMAT_N, 0, 8)); 902 db_put_value(addr, size, new_value); 903 addr += size; 904 905 wrote_one = TRUE; 906 } 907 908 if (!wrote_one) { 909 db_error("Nothing written.\n"); 910 /*NOTREACHED*/ 911 } 912 913 db_next = addr; 914 db_prev = addr - size; 915 916 db_skip_to_eol(); 917 } 918