1 /* $OpenBSD: db_command.c,v 1.89 2020/10/15 03:14:00 deraadt 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 <uvm/uvm_ddb.h> 60 61 /* 62 * Exported global variables 63 */ 64 int db_cmd_loop_done; 65 label_t *db_recover; 66 67 /* 68 * if 'ed' style: 'dot' is set at start of last item printed, 69 * and '+' points to next line. 70 * Otherwise: 'dot' points to next item, '..' points to last. 71 */ 72 int db_ed_style = 1; 73 74 vaddr_t db_dot; /* current location */ 75 vaddr_t db_last_addr; /* last explicit address typed */ 76 vaddr_t db_prev; /* last address examined 77 or written */ 78 vaddr_t db_next; /* next address to be examined 79 or written */ 80 81 int db_cmd_search(char *, struct db_command *, struct db_command **); 82 void db_cmd_list(struct db_command *); 83 void db_ctf_pprint_cmd(db_expr_t, int, db_expr_t,char *); 84 void db_map_print_cmd(db_expr_t, int, db_expr_t, char *); 85 void db_buf_print_cmd(db_expr_t, int, db_expr_t, char *); 86 void db_malloc_print_cmd(db_expr_t, int, db_expr_t, char *); 87 void db_mbuf_print_cmd(db_expr_t, int, db_expr_t, char *); 88 void db_mount_print_cmd(db_expr_t, int, db_expr_t, char *); 89 void db_show_all_mounts(db_expr_t, int, db_expr_t, char *); 90 void db_show_all_vnodes(db_expr_t, int, db_expr_t, char *); 91 void db_show_all_bufs(db_expr_t, int, db_expr_t, char *); 92 void db_object_print_cmd(db_expr_t, int, db_expr_t, char *); 93 void db_page_print_cmd(db_expr_t, int, db_expr_t, char *); 94 void db_extent_print_cmd(db_expr_t, int, db_expr_t, char *); 95 void db_pool_print_cmd(db_expr_t, int, db_expr_t, char *); 96 void db_proc_print_cmd(db_expr_t, int, db_expr_t, char *); 97 void db_uvmexp_print_cmd(db_expr_t, int, db_expr_t, char *); 98 void db_vnode_print_cmd(db_expr_t, int, db_expr_t, char *); 99 void db_nfsreq_print_cmd(db_expr_t, int, db_expr_t, char *); 100 void db_nfsnode_print_cmd(db_expr_t, int, db_expr_t, char *); 101 void db_help_cmd(db_expr_t, int, db_expr_t, char *); 102 void db_fncall(db_expr_t, int, db_expr_t, char *); 103 void db_boot_sync_cmd(db_expr_t, int, db_expr_t, char *); 104 void db_boot_crash_cmd(db_expr_t, int, db_expr_t, char *); 105 void db_boot_dump_cmd(db_expr_t, int, db_expr_t, char *); 106 void db_boot_halt_cmd(db_expr_t, int, db_expr_t, char *); 107 void db_boot_reboot_cmd(db_expr_t, int, db_expr_t, char *); 108 void db_boot_poweroff_cmd(db_expr_t, int, db_expr_t, char *); 109 void db_stack_trace_cmd(db_expr_t, int, db_expr_t, char *); 110 void db_dmesg_cmd(db_expr_t, int, db_expr_t, char *); 111 void db_show_panic_cmd(db_expr_t, int, db_expr_t, char *); 112 void db_bcstats_print_cmd(db_expr_t, int, db_expr_t, char *); 113 void db_struct_offset_cmd(db_expr_t, int, db_expr_t, char *); 114 void db_ctf_show_struct(db_expr_t, int, db_expr_t, char *); 115 void db_show_regs(db_expr_t, int, db_expr_t, char *); 116 void db_write_cmd(db_expr_t, int, db_expr_t, char *); 117 void db_witness_display(db_expr_t, int, db_expr_t, char *); 118 void db_witness_list(db_expr_t, int, db_expr_t, char *); 119 void db_witness_list_all(db_expr_t, int, db_expr_t, char *); 120 121 122 /* 123 * Utility routine - discard tokens through end-of-line. 124 */ 125 void 126 db_skip_to_eol(void) 127 { 128 int t; 129 do { 130 t = db_read_token(); 131 } while (t != tEOL); 132 } 133 134 /* 135 * Results of command search. 136 */ 137 #define CMD_UNIQUE 0 138 #define CMD_FOUND 1 139 #define CMD_NONE 2 140 #define CMD_AMBIGUOUS 3 141 142 /* 143 * Search for command prefix. 144 */ 145 int 146 db_cmd_search(char *name, struct db_command *table, struct db_command **cmdp) 147 { 148 struct db_command *cmd; 149 int result = CMD_NONE; 150 151 for (cmd = table; cmd->name != 0; cmd++) { 152 char *lp = name, *rp = cmd->name; 153 int c; 154 155 while ((c = *lp) == *rp) { 156 if (c == 0) { 157 /* complete match */ 158 *cmdp = cmd; 159 return (CMD_UNIQUE); 160 } 161 lp++; 162 rp++; 163 } 164 if (c == 0) { 165 /* end of name, not end of command - partial match */ 166 if (result == CMD_FOUND) { 167 result = CMD_AMBIGUOUS; 168 /* but keep looking for a full match - 169 this lets us match single letters */ 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 char modif[TOK_STRING_SIZE]; 195 db_expr_t addr, count; 196 int t, result, have_addr = 0; 197 198 t = db_read_token(); 199 if (t == tEOL) { 200 /* empty line repeats last command, at 'next' */ 201 cmd = *last_cmdp; 202 addr = (db_expr_t)db_next; 203 have_addr = 0; 204 count = 1; 205 modif[0] = '\0'; 206 } else if (t == tEXCL) { 207 db_fncall(0, 0, 0, NULL); 208 return; 209 } else if (t != tIDENT) { 210 db_printf("?\n"); 211 db_flush_lex(); 212 return; 213 } else { 214 /* Search for command */ 215 while (cmd_table) { 216 result = db_cmd_search(db_tok_string, 217 cmd_table, &cmd); 218 switch (result) { 219 case CMD_NONE: 220 db_printf("No such command\n"); 221 db_flush_lex(); 222 return; 223 case CMD_AMBIGUOUS: 224 db_printf("Ambiguous\n"); 225 db_flush_lex(); 226 return; 227 default: 228 break; 229 } 230 if ((cmd_table = cmd->more) != 0) { 231 t = db_read_token(); 232 if (t != tIDENT) { 233 db_cmd_list(cmd_table); 234 db_flush_lex(); 235 return; 236 } 237 } 238 } 239 240 if ((cmd->flag & CS_OWN) == 0) { 241 /* 242 * Standard syntax: 243 * command [/modifier] [addr] [,count] 244 */ 245 t = db_read_token(); 246 if (t == tSLASH) { 247 t = db_read_token(); 248 if (t != tIDENT) { 249 db_printf("Bad modifier\n"); 250 db_flush_lex(); 251 return; 252 } 253 db_strlcpy(modif, db_tok_string, sizeof(modif)); 254 } else { 255 db_unread_token(t); 256 modif[0] = '\0'; 257 } 258 259 if (db_expression(&addr)) { 260 db_dot = (vaddr_t) addr; 261 db_last_addr = db_dot; 262 have_addr = 1; 263 } else { 264 addr = (db_expr_t) db_dot; 265 have_addr = 0; 266 } 267 t = db_read_token(); 268 if (t == tCOMMA) { 269 if (!db_expression(&count)) { 270 db_printf("Count missing\n"); 271 db_flush_lex(); 272 return; 273 } 274 } else { 275 db_unread_token(t); 276 count = -1; 277 } 278 if ((cmd->flag & CS_MORE) == 0) 279 db_skip_to_eol(); 280 } 281 } 282 *last_cmdp = cmd; 283 if (cmd != 0) { 284 /* Execute the command. */ 285 (*cmd->fcn)(addr, have_addr, count, modif); 286 287 if (cmd->flag & CS_SET_DOT) { 288 /* 289 * If command changes dot, set dot to 290 * previous address displayed (if 'ed' style). 291 */ 292 if (db_ed_style) 293 db_dot = db_prev; 294 else 295 db_dot = db_next; 296 } 297 } else { 298 /* 299 * If command does not change dot, 300 * set 'next' location to be the same. 301 */ 302 db_next = db_dot; 303 } 304 } 305 306 /*ARGSUSED*/ 307 void 308 db_buf_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 309 { 310 int full = 0; 311 312 if (modif[0] == 'f') 313 full = 1; 314 315 vfs_buf_print((void *) addr, full, db_printf); 316 } 317 318 /*ARGSUSED*/ 319 void 320 db_map_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 321 { 322 int full = 0; 323 324 if (modif[0] == 'f') 325 full = 1; 326 327 uvm_map_printit((struct vm_map *) addr, full, db_printf); 328 } 329 330 /*ARGSUSED*/ 331 void 332 db_malloc_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 333 { 334 malloc_printit(db_printf); 335 } 336 337 /*ARGSUSED*/ 338 void 339 db_mbuf_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 340 { 341 m_print((void *)addr, db_printf); 342 } 343 344 /*ARGSUSED*/ 345 void 346 db_socket_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 347 { 348 so_print((void *)addr, db_printf); 349 } 350 351 /*ARGSUSED*/ 352 void 353 db_mount_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 354 { 355 int full = 0; 356 357 if (modif[0] == 'f') 358 full = 1; 359 360 vfs_mount_print((struct mount *) addr, full, db_printf); 361 } 362 363 void 364 db_show_all_mounts(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 365 { 366 int full = 0; 367 struct mount *mp; 368 369 if (modif[0] == 'f') 370 full = 1; 371 372 TAILQ_FOREACH(mp, &mountlist, mnt_list) { 373 db_printf("mountpoint %p\n", mp); 374 vfs_mount_print(mp, full, db_printf); 375 } 376 } 377 378 extern struct pool vnode_pool; 379 void 380 db_show_all_vnodes(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 381 { 382 int full = 0; 383 384 if (modif[0] == 'f') 385 full = 1; 386 387 pool_walk(&vnode_pool, full, db_printf, vfs_vnode_print); 388 } 389 390 extern struct pool bufpool; 391 void 392 db_show_all_bufs(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 393 { 394 int full = 0; 395 396 if (modif[0] == 'f') 397 full = 1; 398 399 pool_walk(&bufpool, full, db_printf, vfs_buf_print); 400 } 401 402 /*ARGSUSED*/ 403 void 404 db_object_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 405 { 406 int full = 0; 407 408 if (modif[0] == 'f') 409 full = 1; 410 411 uvm_object_printit((struct uvm_object *) addr, full, db_printf); 412 } 413 414 /*ARGSUSED*/ 415 void 416 db_page_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 417 { 418 int full = 0; 419 420 if (modif[0] == 'f') 421 full = 1; 422 423 uvm_page_printit((struct vm_page *) addr, full, db_printf); 424 } 425 426 /*ARGSUSED*/ 427 void 428 db_vnode_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 429 { 430 int full = 0; 431 432 if (modif[0] == 'f') 433 full = 1; 434 435 vfs_vnode_print((void *)addr, full, db_printf); 436 } 437 438 #ifdef NFSCLIENT 439 /*ARGSUSED*/ 440 void 441 db_nfsreq_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, 442 char *modif) 443 { 444 int full = 0; 445 446 if (modif[0] == 'f') 447 full = 1; 448 449 nfs_request_print((void *)addr, full, db_printf); 450 } 451 452 /*ARGSUSED*/ 453 void 454 db_nfsnode_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, 455 char *modif) 456 { 457 int full = 0; 458 459 if (modif[0] == 'f') 460 full = 1; 461 462 nfs_node_print((void *)addr, full, db_printf); 463 } 464 #endif 465 466 467 /*ARGSUSED*/ 468 void 469 db_show_panic_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 470 { 471 if (panicstr) 472 db_printf("%s\n", panicstr); 473 else if (faultstr) { 474 db_printf("kernel page fault\n"); 475 db_printf("%s\n", faultstr); 476 db_stack_trace_print(addr, have_addr, 1, modif, db_printf); 477 } 478 else 479 db_printf("the kernel did not panic\n"); /* yet */ 480 } 481 482 /*ARGSUSED*/ 483 void 484 db_extent_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 485 { 486 extent_print_all(); 487 } 488 489 /*ARGSUSED*/ 490 void 491 db_pool_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 492 { 493 pool_printit((struct pool *)addr, modif, db_printf); 494 } 495 496 /*ARGSUSED*/ 497 void 498 db_proc_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 499 { 500 if (!have_addr) 501 addr = (db_expr_t)curproc; 502 503 proc_printit((struct proc *)addr, modif, db_printf); 504 } 505 506 /*ARGSUSED*/ 507 void 508 db_uvmexp_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 509 { 510 uvmexp_print(db_printf); 511 } 512 513 void bcstats_print(int (*)(const char *, ...)); 514 515 /*ARGSUSED*/ 516 void 517 db_bcstats_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 518 { 519 bcstats_print(db_printf); 520 } 521 522 /* 523 * 'show' commands 524 */ 525 526 struct db_command db_show_all_cmds[] = { 527 { "procs", db_show_all_procs, 0, NULL }, 528 { "callout", db_show_callout, 0, NULL }, 529 { "pools", db_show_all_pools, 0, NULL }, 530 { "mounts", db_show_all_mounts, 0, NULL }, 531 { "vnodes", db_show_all_vnodes, 0, NULL }, 532 { "bufs", db_show_all_bufs, 0, NULL }, 533 #ifdef NFSCLIENT 534 { "nfsreqs", db_show_all_nfsreqs, 0, NULL }, 535 { "nfsnodes", db_show_all_nfsnodes, 0, NULL }, 536 #endif 537 #ifdef WITNESS 538 { "locks", db_witness_list_all, 0, NULL }, 539 #endif 540 { NULL, NULL, 0, NULL } 541 }; 542 543 struct db_command db_show_cmds[] = { 544 { "all", NULL, 0, db_show_all_cmds }, 545 { "bcstats", db_bcstats_print_cmd, 0, NULL }, 546 { "breaks", db_listbreak_cmd, 0, NULL }, 547 { "buf", db_buf_print_cmd, 0, NULL }, 548 { "extents", db_extent_print_cmd, 0, NULL }, 549 #ifdef WITNESS 550 { "locks", db_witness_list, 0, NULL }, 551 #endif 552 { "malloc", db_malloc_print_cmd, 0, NULL }, 553 { "map", db_map_print_cmd, 0, NULL }, 554 { "mbuf", db_mbuf_print_cmd, 0, NULL }, 555 { "mount", db_mount_print_cmd, 0, NULL }, 556 #ifdef NFSCLIENT 557 { "nfsreq", db_nfsreq_print_cmd, 0, NULL }, 558 { "nfsnode", db_nfsnode_print_cmd, 0, NULL }, 559 #endif 560 { "object", db_object_print_cmd, 0, NULL }, 561 { "page", db_page_print_cmd, 0, NULL }, 562 { "panic", db_show_panic_cmd, 0, NULL }, 563 { "pool", db_pool_print_cmd, 0, NULL }, 564 { "proc", db_proc_print_cmd, 0, NULL }, 565 { "registers", db_show_regs, 0, NULL }, 566 { "socket", db_socket_print_cmd, 0, NULL }, 567 { "struct", db_ctf_show_struct, CS_OWN, NULL }, 568 { "uvmexp", db_uvmexp_print_cmd, 0, NULL }, 569 { "vnode", db_vnode_print_cmd, 0, NULL }, 570 { "watches", db_listwatch_cmd, 0, NULL }, 571 #ifdef WITNESS 572 { "witness", db_witness_display, 0, NULL }, 573 #endif 574 { NULL, NULL, 0, NULL } 575 }; 576 577 struct db_command db_boot_cmds[] = { 578 { "sync", db_boot_sync_cmd, 0, 0 }, 579 { "crash", db_boot_crash_cmd, 0, 0 }, 580 { "dump", db_boot_dump_cmd, 0, 0 }, 581 { "halt", db_boot_halt_cmd, 0, 0 }, 582 { "reboot", db_boot_reboot_cmd, 0, 0 }, 583 { "poweroff", db_boot_poweroff_cmd, 0, 0 }, 584 { NULL, } 585 }; 586 587 struct db_command db_command_table[] = { 588 #ifdef DB_MACHINE_COMMANDS 589 /* this must be the first entry, if it exists */ 590 { "machine", NULL, 0, NULL}, 591 #endif 592 { "kill", db_kill_cmd, 0, NULL }, 593 { "print", db_print_cmd, 0, NULL }, 594 { "p", db_print_cmd, 0, NULL }, 595 { "pprint", db_ctf_pprint_cmd, CS_OWN, NULL }, 596 { "examine", db_examine_cmd, CS_SET_DOT, NULL }, 597 { "x", db_examine_cmd, CS_SET_DOT, NULL }, 598 { "search", db_search_cmd, CS_OWN|CS_SET_DOT, NULL }, 599 { "set", db_set_cmd, CS_OWN, NULL }, 600 { "write", db_write_cmd, CS_MORE|CS_SET_DOT, NULL }, 601 { "w", db_write_cmd, CS_MORE|CS_SET_DOT, NULL }, 602 { "delete", db_delete_cmd, 0, NULL }, 603 { "d", db_delete_cmd, 0, NULL }, 604 { "break", db_breakpoint_cmd, 0, NULL }, 605 { "dwatch", db_deletewatch_cmd, 0, NULL }, 606 { "watch", db_watchpoint_cmd, CS_MORE, NULL }, 607 { "step", db_single_step_cmd, 0, NULL }, 608 { "s", db_single_step_cmd, 0, NULL }, 609 { "continue", db_continue_cmd, 0, NULL }, 610 { "c", db_continue_cmd, 0, NULL }, 611 { "until", db_trace_until_call_cmd,0, NULL }, 612 { "next", db_trace_until_matching_cmd,0, NULL }, 613 { "match", db_trace_until_matching_cmd,0, NULL }, 614 { "trace", db_stack_trace_cmd, 0, NULL }, 615 { "bt", db_stack_trace_cmd, 0, NULL }, 616 { "call", db_fncall, CS_OWN, NULL }, 617 { "ps", db_show_all_procs, 0, NULL }, 618 { "callout", db_show_callout, 0, NULL }, 619 { "show", NULL, 0, db_show_cmds }, 620 { "boot", NULL, 0, db_boot_cmds }, 621 { "help", db_help_cmd, 0, NULL }, 622 { "hangman", db_hangman, 0, NULL }, 623 { "dmesg", db_dmesg_cmd, 0, NULL }, 624 { NULL, NULL, 0, NULL } 625 }; 626 627 #ifdef DB_MACHINE_COMMANDS 628 629 /* this function should be called to install the machine dependent 630 commands. It should be called before the debugger is enabled */ 631 void 632 db_machine_commands_install(struct db_command *ptr) 633 { 634 db_command_table[0].more = ptr; 635 } 636 637 #endif 638 639 struct db_command *db_last_command = NULL; 640 641 void 642 db_help_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 643 { 644 db_cmd_list(db_command_table); 645 } 646 647 void 648 db_command_loop(void) 649 { 650 label_t db_jmpbuf; 651 label_t *savejmp; 652 extern int db_output_line; 653 654 /* 655 * Initialize 'prev' and 'next' to dot. 656 */ 657 db_prev = db_dot; 658 db_next = db_dot; 659 660 db_cmd_loop_done = 0; 661 662 savejmp = db_recover; 663 db_recover = &db_jmpbuf; 664 (void) setjmp(&db_jmpbuf); 665 666 while (!db_cmd_loop_done) { 667 668 if (db_print_position() != 0) 669 db_printf("\n"); 670 db_output_line = 0; 671 672 #ifdef MULTIPROCESSOR 673 db_printf("ddb{%d}> ", CPU_INFO_UNIT(curcpu())); 674 #else 675 db_printf("ddb> "); 676 #endif 677 (void) db_read_line(); 678 679 db_command(&db_last_command, db_command_table); 680 } 681 682 db_recover = savejmp; 683 } 684 685 void 686 db_error(char *s) 687 { 688 if (s) 689 db_printf("%s", s); 690 db_flush_lex(); 691 if (db_recover != NULL) 692 longjmp(db_recover); 693 } 694 695 696 /* 697 * Call random function: 698 * !expr(arg,arg,arg) 699 */ 700 /*ARGSUSED*/ 701 void 702 db_fncall(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 703 { 704 db_expr_t fn_addr; 705 #define MAXARGS 11 706 db_expr_t args[MAXARGS]; 707 int nargs = 0; 708 db_expr_t retval; 709 db_expr_t (*func)(db_expr_t, ...); 710 int t; 711 char tmpfmt[28]; 712 713 if (!db_expression(&fn_addr)) { 714 db_printf("Bad function\n"); 715 db_flush_lex(); 716 return; 717 } 718 func = (db_expr_t (*)(db_expr_t, ...)) fn_addr; 719 720 t = db_read_token(); 721 if (t == tLPAREN) { 722 if (db_expression(&args[0])) { 723 nargs++; 724 while ((t = db_read_token()) == tCOMMA) { 725 if (nargs == MAXARGS) { 726 db_printf("Too many arguments\n"); 727 db_flush_lex(); 728 return; 729 } 730 if (!db_expression(&args[nargs])) { 731 db_printf("Argument missing\n"); 732 db_flush_lex(); 733 return; 734 } 735 nargs++; 736 } 737 db_unread_token(t); 738 } 739 if (db_read_token() != tRPAREN) { 740 db_printf("?\n"); 741 db_flush_lex(); 742 return; 743 } 744 } 745 db_skip_to_eol(); 746 747 while (nargs < MAXARGS) 748 args[nargs++] = 0; 749 750 retval = (*func)(args[0], args[1], args[2], args[3], args[4], 751 args[5], args[6], args[7], args[8], args[9]); 752 db_printf("%s\n", db_format(tmpfmt, sizeof tmpfmt, retval, 753 DB_FORMAT_N, 1, 0)); 754 } 755 756 void 757 db_reboot(int howto) 758 { 759 spl0(); 760 if (!curproc) 761 curproc = &proc0; 762 reboot(howto); 763 } 764 765 void 766 db_boot_sync_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 767 { 768 db_reboot(RB_AUTOBOOT | RB_TIMEBAD | RB_USERREQ); 769 } 770 771 void 772 db_boot_crash_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 773 { 774 db_reboot(RB_NOSYNC | RB_DUMP | RB_TIMEBAD | RB_USERREQ); 775 } 776 777 void 778 db_boot_dump_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 779 { 780 db_reboot(RB_DUMP | RB_TIMEBAD | RB_USERREQ); 781 } 782 783 void 784 db_boot_halt_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 785 { 786 db_reboot(RB_NOSYNC | RB_HALT | RB_TIMEBAD | RB_USERREQ); 787 } 788 789 void 790 db_boot_reboot_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 791 { 792 boot(RB_RESET | RB_AUTOBOOT | RB_NOSYNC | RB_TIMEBAD | RB_USERREQ); 793 } 794 795 void 796 db_boot_poweroff_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 797 { 798 db_reboot(RB_NOSYNC | RB_HALT | RB_POWERDOWN | RB_TIMEBAD | RB_USERREQ); 799 } 800 801 void 802 db_dmesg_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif) 803 { 804 int i, off; 805 char *p; 806 807 if (!msgbufp || msgbufp->msg_magic != MSG_MAGIC) 808 return; 809 off = msgbufp->msg_bufx; 810 if (off > msgbufp->msg_bufs) 811 off = 0; 812 for (i = 0, p = msgbufp->msg_bufc + off; 813 i < msgbufp->msg_bufs; i++, p++) { 814 if (p >= msgbufp->msg_bufc + msgbufp->msg_bufs) 815 p = msgbufp->msg_bufc; 816 if (*p != '\0') 817 db_putchar(*p); 818 } 819 db_putchar('\n'); 820 } 821 822 void 823 db_stack_trace_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 824 { 825 db_stack_trace_print(addr, have_addr, count, modif, db_printf); 826 } 827 828 void 829 db_show_regs(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 830 { 831 struct db_variable *regp; 832 db_expr_t value, offset; 833 char * name; 834 char tmpfmt[28]; 835 836 for (regp = db_regs; regp < db_eregs; regp++) { 837 db_read_variable(regp, &value); 838 db_printf("%-12s%s", regp->name, 839 db_format(tmpfmt, sizeof tmpfmt, 840 (long)value, DB_FORMAT_N, 1, sizeof(long) * 3)); 841 db_find_xtrn_sym_and_offset((vaddr_t)value, &name, &offset); 842 if (name != 0 && offset <= db_maxoff && offset != value) { 843 db_printf("\t%s", name); 844 if (offset != 0) 845 db_printf("+%s", 846 db_format(tmpfmt, sizeof tmpfmt, 847 (long)offset, DB_FORMAT_R, 1, 0)); 848 } 849 db_printf("\n"); 850 } 851 db_print_loc_and_inst(PC_REGS(&ddb_regs)); 852 } 853 854 /* 855 * Write to file. 856 */ 857 /*ARGSUSED*/ 858 void 859 db_write_cmd(db_expr_t address, int have_addr, db_expr_t count, char *modif) 860 { 861 vaddr_t addr; 862 db_expr_t old_value; 863 db_expr_t new_value; 864 int size, wrote_one = 0; 865 char tmpfmt[28]; 866 867 addr = (vaddr_t) address; 868 869 switch (modif[0]) { 870 case 'b': 871 size = 1; 872 break; 873 case 'h': 874 size = 2; 875 break; 876 case 'l': 877 case '\0': 878 size = 4; 879 break; 880 #ifdef __LP64__ 881 case 'q': 882 size = 8; 883 break; 884 #endif 885 default: 886 size = -1; 887 db_error("Unknown size\n"); 888 /*NOTREACHED*/ 889 } 890 891 while (db_expression(&new_value)) { 892 old_value = db_get_value(addr, size, 0); 893 db_printsym(addr, DB_STGY_ANY, db_printf); 894 db_printf("\t\t%s\t", db_format(tmpfmt, sizeof tmpfmt, 895 old_value, DB_FORMAT_N, 0, 8)); 896 db_printf("=\t%s\n", db_format(tmpfmt, sizeof tmpfmt, 897 new_value, DB_FORMAT_N, 0, 8)); 898 db_put_value(addr, size, new_value); 899 addr += size; 900 901 wrote_one = 1; 902 } 903 904 if (!wrote_one) { 905 db_error("Nothing written.\n"); 906 /*NOTREACHED*/ 907 } 908 909 db_next = addr; 910 db_prev = addr - size; 911 912 db_skip_to_eol(); 913 } 914