db_command.c revision 1.144
1 /* $NetBSD: db_command.c,v 1.144 2015/02/08 19:41:39 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1996, 1997, 1998, 1999, 2002, 2009 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Adam Hamsik, and by Andrew Doran. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Mach Operating System 34 * Copyright (c) 1991,1990 Carnegie Mellon University 35 * All Rights Reserved. 36 * 37 * Permission to use, copy, modify and distribute this software and its 38 * documentation is hereby granted, provided that both the copyright 39 * notice and this permission notice appear in all copies of the 40 * software, derivative works or modified versions, and any portions 41 * thereof, and that both notices appear in supporting documentation. 42 * 43 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 44 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 45 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 46 * 47 * Carnegie Mellon requests users of this software to return to 48 * 49 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 50 * School of Computer Science 51 * Carnegie Mellon University 52 * Pittsburgh PA 15213-3890 53 * 54 * any improvements or extensions that they make and grant Carnegie the 55 * rights to redistribute these changes. 56 */ 57 58 /* 59 * Command dispatcher. 60 */ 61 62 #include <sys/cdefs.h> 63 __KERNEL_RCSID(0, "$NetBSD: db_command.c,v 1.144 2015/02/08 19:41:39 christos Exp $"); 64 65 #ifdef _KERNEL_OPT 66 #include "opt_aio.h" 67 #include "opt_ddb.h" 68 #include "opt_kgdb.h" 69 #include "opt_mqueue.h" 70 #include "opt_inet.h" 71 #include "opt_kernhist.h" 72 #include "opt_ddbparam.h" 73 #include "opt_multiprocessor.h" 74 #include "arp.h" 75 #endif 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/reboot.h> 80 #include <sys/device.h> 81 #include <sys/lwp.h> 82 #include <sys/mbuf.h> 83 #include <sys/namei.h> 84 #include <sys/pool.h> 85 #include <sys/proc.h> 86 #include <sys/vnode.h> 87 #include <sys/vmem.h> 88 #include <sys/lockdebug.h> 89 #include <sys/cpu.h> 90 #include <sys/buf.h> 91 #include <sys/module.h> 92 #include <sys/kernhist.h> 93 94 /*include queue macros*/ 95 #include <sys/queue.h> 96 97 #include <ddb/ddb.h> 98 99 #include <uvm/uvm_extern.h> 100 #include <uvm/uvm_ddb.h> 101 102 /* 103 * Results of command search. 104 */ 105 #define CMD_EXACT 0 106 #define CMD_PREFIX 1 107 #define CMD_NONE 2 108 #define CMD_AMBIGUOUS 3 109 110 /* 111 * Exported global variables 112 */ 113 bool db_cmd_loop_done; 114 label_t *db_recover; 115 db_addr_t db_dot; 116 db_addr_t db_last_addr; 117 db_addr_t db_prev; 118 db_addr_t db_next; 119 120 121 /* 122 * New DDB api for adding and removing commands uses three lists, because 123 * we use two types of commands 124 * a) standard commands without subcommands -> reboot 125 * b) show commands which are subcommands of show command -> show aio_jobs 126 * c) if defined machine specific commands 127 * 128 * ddb_add_cmd, ddb_rem_cmd use type (DDB_SHOW_CMD||DDB_BASE_CMD)argument to 129 * add them to representativ lists. 130 */ 131 132 static const struct db_command db_command_table[]; 133 static const struct db_command db_show_cmds[]; 134 135 #ifdef DB_MACHINE_COMMANDS 136 /* arch/<arch>/<arch>/db_interface.c */ 137 extern const struct db_command db_machine_command_table[]; 138 #endif 139 140 /* the global queue of all command tables */ 141 TAILQ_HEAD(db_cmd_tbl_en_head, db_cmd_tbl_en); 142 143 /* TAILQ entry used to register command tables */ 144 struct db_cmd_tbl_en { 145 const struct db_command *db_cmd; /* cmd table */ 146 TAILQ_ENTRY(db_cmd_tbl_en) db_cmd_next; 147 }; 148 149 /* head of base commands list */ 150 static struct db_cmd_tbl_en_head db_base_cmd_list = 151 TAILQ_HEAD_INITIALIZER(db_base_cmd_list); 152 static struct db_cmd_tbl_en db_base_cmd_builtins = 153 { .db_cmd = db_command_table }; 154 155 /* head of show commands list */ 156 static struct db_cmd_tbl_en_head db_show_cmd_list = 157 TAILQ_HEAD_INITIALIZER(db_show_cmd_list); 158 static struct db_cmd_tbl_en db_show_cmd_builtins = 159 { .db_cmd = db_show_cmds }; 160 161 /* head of machine commands list */ 162 static struct db_cmd_tbl_en_head db_mach_cmd_list = 163 TAILQ_HEAD_INITIALIZER(db_mach_cmd_list); 164 #ifdef DB_MACHINE_COMMANDS 165 static struct db_cmd_tbl_en db_mach_cmd_builtins = 166 { .db_cmd = db_machine_command_table }; 167 #endif 168 169 /* 170 * if 'ed' style: 'dot' is set at start of last item printed, 171 * and '+' points to next line. 172 * Otherwise: 'dot' points to next item, '..' points to last. 173 */ 174 static bool db_ed_style = true; 175 176 static void db_init_commands(void); 177 static int db_register_tbl_entry(uint8_t type, 178 struct db_cmd_tbl_en *list_ent); 179 static void db_cmd_list(const struct db_cmd_tbl_en_head *); 180 static int db_cmd_search(const char *, struct db_cmd_tbl_en_head *, 181 const struct db_command **); 182 static int db_cmd_search_table(const char *, const struct db_command *, 183 const struct db_command **); 184 static void db_cmd_search_failed(char *, int); 185 static const struct db_command *db_read_command(void); 186 static void db_command(const struct db_command **); 187 static void db_buf_print_cmd(db_expr_t, bool, db_expr_t, const char *); 188 static void db_event_print_cmd(db_expr_t, bool, db_expr_t, const char *); 189 static void db_fncall(db_expr_t, bool, db_expr_t, const char *); 190 static void db_help_print_cmd(db_expr_t, bool, db_expr_t, const char *); 191 static void db_lock_print_cmd(db_expr_t, bool, db_expr_t, const char *); 192 static void db_mount_print_cmd(db_expr_t, bool, db_expr_t, const char *); 193 static void db_mbuf_print_cmd(db_expr_t, bool, db_expr_t, const char *); 194 static void db_map_print_cmd(db_expr_t, bool, db_expr_t, const char *); 195 static void db_namecache_print_cmd(db_expr_t, bool, db_expr_t, 196 const char *); 197 static void db_object_print_cmd(db_expr_t, bool, db_expr_t, const char *); 198 static void db_page_print_cmd(db_expr_t, bool, db_expr_t, const char *); 199 static void db_show_all_pages(db_expr_t, bool, db_expr_t, const char *); 200 static void db_pool_print_cmd(db_expr_t, bool, db_expr_t, const char *); 201 static void db_reboot_cmd(db_expr_t, bool, db_expr_t, const char *); 202 static void db_sifting_cmd(db_expr_t, bool, db_expr_t, const char *); 203 static void db_stack_trace_cmd(db_expr_t, bool, db_expr_t, const char *); 204 static void db_sync_cmd(db_expr_t, bool, db_expr_t, const char *); 205 static void db_whatis_cmd(db_expr_t, bool, db_expr_t, const char *); 206 static void db_uvmexp_print_cmd(db_expr_t, bool, db_expr_t, const char *); 207 #ifdef KERNHIST 208 static void db_kernhist_print_cmd(db_expr_t, bool, db_expr_t, const char *); 209 #endif 210 static void db_vnode_print_cmd(db_expr_t, bool, db_expr_t, const char *); 211 static void db_vmem_print_cmd(db_expr_t, bool, db_expr_t, const char *); 212 213 static const struct db_command db_show_cmds[] = { 214 /*added from all sub cmds*/ 215 { DDB_ADD_CMD("callout", db_show_callout, 216 0 ,"List all used callout functions.",NULL,NULL) }, 217 { DDB_ADD_CMD("pages", db_show_all_pages, 218 0 ,"List all used memory pages.",NULL,NULL) }, 219 { DDB_ADD_CMD("proc", db_show_proc, 220 0 ,"Print process information.",NULL,NULL) }, 221 { DDB_ADD_CMD("procs", db_show_all_procs, 222 0 ,"List all processes.",NULL,NULL) }, 223 { DDB_ADD_CMD("pools", db_show_all_pools, 224 0 ,"Show all pools",NULL,NULL) }, 225 #ifdef AIO 226 /*added from all sub cmds*/ 227 { DDB_ADD_CMD("aio_jobs", db_show_aio_jobs, 0, 228 "Show aio jobs",NULL,NULL) }, 229 #endif 230 { DDB_ADD_CMD("all", NULL, 231 CS_COMPAT, NULL,NULL,NULL) }, 232 #if defined(INET) && (NARP > 0) 233 { DDB_ADD_CMD("arptab", db_show_arptab, 0,NULL,NULL,NULL) }, 234 #endif 235 #ifdef _KERNEL 236 { DDB_ADD_CMD("breaks", db_listbreak_cmd, 0, 237 "Display all breaks.",NULL,NULL) }, 238 #endif 239 { DDB_ADD_CMD("buf", db_buf_print_cmd, 0, 240 "Print the struct buf at address.", "[/f] address",NULL) }, 241 { DDB_ADD_CMD("event", db_event_print_cmd, 0, 242 "Print all the non-zero evcnt(9) event counters.", "[/fitm]",NULL) }, 243 { DDB_ADD_CMD("files", db_show_files_cmd, 0, 244 "Print the files open by process at address", 245 "[/f] address", NULL) }, 246 { DDB_ADD_CMD("lock", db_lock_print_cmd, 0,NULL,NULL,NULL) }, 247 { DDB_ADD_CMD("map", db_map_print_cmd, 0, 248 "Print the vm_map at address.", "[/f] address",NULL) }, 249 { DDB_ADD_CMD("module", db_show_module_cmd, 0, 250 "Print kernel modules", NULL, NULL) }, 251 { DDB_ADD_CMD("mount", db_mount_print_cmd, 0, 252 "Print the mount structure at address.", "[/f] address",NULL) }, 253 #ifdef MQUEUE 254 { DDB_ADD_CMD("mqueue", db_show_mqueue_cmd, 0, 255 "Print the message queues", NULL, NULL) }, 256 #endif 257 { DDB_ADD_CMD("mbuf", db_mbuf_print_cmd, 0,NULL,NULL, 258 "-c prints all mbuf chains") }, 259 { DDB_ADD_CMD("ncache", db_namecache_print_cmd, 0, 260 "Dump the namecache list.", "address",NULL) }, 261 { DDB_ADD_CMD("object", db_object_print_cmd, 0, 262 "Print the vm_object at address.", "[/f] address",NULL) }, 263 { DDB_ADD_CMD("page", db_page_print_cmd, 0, 264 "Print the vm_page at address.", "[/f] address",NULL) }, 265 { DDB_ADD_CMD("panic", db_show_panic, 0, 266 "Print the current panic string",NULL,NULL) }, 267 { DDB_ADD_CMD("pool", db_pool_print_cmd, 0, 268 "Print the pool at address.", "[/clp] address",NULL) }, 269 { DDB_ADD_CMD("registers", db_show_regs, 0, 270 "Display the register set.", "[/u]",NULL) }, 271 { DDB_ADD_CMD("sched_qs", db_show_sched_qs, 0, 272 "Print the state of the scheduler's run queues.", 273 NULL,NULL) }, 274 { DDB_ADD_CMD("uvmexp", db_uvmexp_print_cmd, 0, 275 "Print a selection of UVM counters and statistics.", 276 NULL,NULL) }, 277 #ifdef KERNHIST 278 { DDB_ADD_CMD("kernhist", db_kernhist_print_cmd, 0, 279 "Print the UVM history logs.", 280 NULL,NULL) }, 281 #endif 282 { DDB_ADD_CMD("vnode", db_vnode_print_cmd, 0, 283 "Print the vnode at address.", "[/f] address",NULL) }, 284 { DDB_ADD_CMD("vmem", db_vmem_print_cmd, 0, 285 "Print the vmem usage.", "[/a] address", NULL) }, 286 { DDB_ADD_CMD("vmems", db_show_all_vmems, 0, 287 "Show all vmems.", NULL, NULL) }, 288 #ifdef _KERNEL 289 { DDB_ADD_CMD("watches", db_listwatch_cmd, 0, 290 "Display all watchpoints.", NULL,NULL) }, 291 #endif 292 { DDB_ADD_CMD(NULL, NULL, 0,NULL,NULL,NULL) } 293 }; 294 295 static const struct db_command db_command_table[] = { 296 { DDB_ADD_CMD("b", db_breakpoint_cmd, 0, 297 "Set a breakpoint at address", "[/u] address[,count].",NULL) }, 298 { DDB_ADD_CMD("break", db_breakpoint_cmd, 0, 299 "Set a breakpoint at address", "[/u] address[,count].",NULL) }, 300 { DDB_ADD_CMD("bt", db_stack_trace_cmd, 0, 301 "Show backtrace.", "See help trace.",NULL) }, 302 { DDB_ADD_CMD("c", db_continue_cmd, 0, 303 "Continue execution.", "[/c]",NULL) }, 304 { DDB_ADD_CMD("call", db_fncall, CS_OWN, 305 "Call the function", "address[(expression[,...])]",NULL) }, 306 { DDB_ADD_CMD("callout", db_show_callout, 0, NULL, 307 NULL,NULL ) }, 308 { DDB_ADD_CMD("continue", db_continue_cmd, 0, 309 "Continue execution.", "[/c]",NULL) }, 310 { DDB_ADD_CMD("d", db_delete_cmd, 0, 311 "Delete a breakpoint.", "address | #number",NULL) }, 312 { DDB_ADD_CMD("delete", db_delete_cmd, 0, 313 "Delete a breakpoint.", "address | #number",NULL) }, 314 { DDB_ADD_CMD("dmesg", db_dmesg, 0, 315 "Show kernel message buffer.", "[count]",NULL) }, 316 { DDB_ADD_CMD("dwatch", db_deletewatch_cmd, 0, 317 "Delete the watchpoint.", "address",NULL) }, 318 { DDB_ADD_CMD("examine", db_examine_cmd, CS_SET_DOT, 319 "Display the address locations.", 320 "[/modifier] address[,count]",NULL) }, 321 { DDB_ADD_CMD("exit", db_continue_cmd, 0, 322 "Continue execution.", "[/c]",NULL) }, 323 { DDB_ADD_CMD("help", db_help_print_cmd, CS_OWN|CS_NOREPEAT, 324 "Display help about commands", 325 "Use other commands as arguments.",NULL) }, 326 { DDB_ADD_CMD("kill", db_kill_proc, CS_OWN, 327 "Send a signal to the process","pid[,signal_number]", 328 " pid:\t\t\tthe process id (may need 0t prefix for decimal)\n" 329 " signal_number:\tthe signal to send") }, 330 #ifdef KGDB 331 { DDB_ADD_CMD("kgdb", db_kgdb_cmd, 0, NULL,NULL,NULL) }, 332 #endif 333 { DDB_ADD_CMD("machine",NULL,CS_MACH, 334 "Architecture specific functions.",NULL,NULL) }, 335 { DDB_ADD_CMD("match", db_trace_until_matching_cmd,0, 336 "Stop at the matching return instruction.","See help next",NULL) }, 337 { DDB_ADD_CMD("next", db_trace_until_matching_cmd,0, 338 "Stop at the matching return instruction.","[/p]",NULL) }, 339 { DDB_ADD_CMD("p", db_print_cmd, 0, 340 "Print address according to the format.", 341 "[/axzodurc] address [address ...]",NULL) }, 342 { DDB_ADD_CMD("print", db_print_cmd, 0, 343 "Print address according to the format.", 344 "[/axzodurc] address [address ...]",NULL) }, 345 { DDB_ADD_CMD("ps", db_show_all_procs, 0, 346 "Print all processes.","See show all procs",NULL) }, 347 { DDB_ADD_CMD("quit", db_continue_cmd, 0, 348 "Continue execution.", "[/c]",NULL) }, 349 { DDB_ADD_CMD("reboot", db_reboot_cmd, CS_OWN, 350 "Reboot","0x1 RB_ASKNAME, 0x2 RB_SINGLE, 0x4 RB_NOSYNC, 0x8 RB_HALT," 351 "0x40 RB_KDB, 0x100 RB_DUMP, 0x808 RB_POWERDOWN",NULL) }, 352 { DDB_ADD_CMD("s", db_single_step_cmd, 0, 353 "Single-step count times.","[/p] [,count]",NULL) }, 354 { DDB_ADD_CMD("search", db_search_cmd, CS_OWN|CS_SET_DOT, 355 "Search memory from address for value.", 356 "[/bhl] address value [mask] [,count]",NULL) }, 357 { DDB_ADD_CMD("set", db_set_cmd, CS_OWN, 358 "Set the named variable","$variable [=] expression",NULL) }, 359 { DDB_ADD_CMD("show", NULL, CS_SHOW, 360 "Show kernel stats.", NULL,NULL) }, 361 { DDB_ADD_CMD("sifting", db_sifting_cmd, CS_OWN, 362 "Search the symbol tables ","[/F] string",NULL) }, 363 { DDB_ADD_CMD("step", db_single_step_cmd, 0, 364 "Single-step count times.","[/p] [,count]",NULL) }, 365 { DDB_ADD_CMD("sync", db_sync_cmd, CS_OWN, 366 "Force a crash dump, and then reboot.",NULL,NULL) }, 367 { DDB_ADD_CMD("trace", db_stack_trace_cmd, 0, 368 "Stack trace from frame-address.", 369 "[/u[l]] [frame-address][,count]",NULL) }, 370 { DDB_ADD_CMD("until", db_trace_until_call_cmd,0, 371 "Stop at the next call or return instruction.","[/p]",NULL) }, 372 { DDB_ADD_CMD("w", db_write_cmd, CS_MORE|CS_SET_DOT, 373 "Write the expressions at succeeding locations.", 374 "[/bhl] address expression [expression ...]",NULL) }, 375 { DDB_ADD_CMD("watch", db_watchpoint_cmd, CS_MORE, 376 "Set a watchpoint for a region. ","address[,size]",NULL) }, 377 { DDB_ADD_CMD("whatis", db_whatis_cmd, 0, 378 "Describe what an address is", "address", NULL) }, 379 { DDB_ADD_CMD("write", db_write_cmd, CS_MORE|CS_SET_DOT, 380 "Write the expressions at succeeding locations.", 381 "[/bhl] address expression [expression ...]",NULL) }, 382 { DDB_ADD_CMD("x", db_examine_cmd, CS_SET_DOT, 383 "Display the address locations.", 384 "[/modifier] address[,count]",NULL) }, 385 { DDB_ADD_CMD(NULL, NULL, 0, NULL, NULL, NULL) } 386 }; 387 388 static const struct db_command *db_last_command = NULL; 389 #if defined(DDB_COMMANDONENTER) 390 char db_cmd_on_enter[DB_LINE_MAXLEN + 1] = ___STRING(DDB_COMMANDONENTER); 391 #else /* defined(DDB_COMMANDONENTER) */ 392 char db_cmd_on_enter[DB_LINE_MAXLEN + 1] = ""; 393 #endif /* defined(DDB_COMMANDONENTER) */ 394 #define DB_LINE_SEP ';' 395 396 /* 397 * Execute commandlist after ddb start 398 * This function goes through the command list created from commands and ';' 399 */ 400 static void 401 db_execute_commandlist(const char *cmdlist) 402 { 403 const char *cmd = cmdlist; 404 const struct db_command *dummy = NULL; 405 406 while (*cmd != '\0') { 407 const char *ep = cmd; 408 409 while (*ep != '\0' && *ep != DB_LINE_SEP) { 410 ep++; 411 } 412 db_set_line(cmd, ep); 413 db_command(&dummy); 414 cmd = ep; 415 if (*cmd == DB_LINE_SEP) { 416 cmd++; 417 } 418 } 419 } 420 421 /* Initialize ddb command tables */ 422 void 423 db_init_commands(void) 424 { 425 static bool done = false; 426 427 if (done) return; 428 done = true; 429 430 /* register command tables */ 431 (void)db_register_tbl_entry(DDB_BASE_CMD, &db_base_cmd_builtins); 432 #ifdef DB_MACHINE_COMMANDS 433 (void)db_register_tbl_entry(DDB_MACH_CMD, &db_mach_cmd_builtins); 434 #endif 435 (void)db_register_tbl_entry(DDB_SHOW_CMD, &db_show_cmd_builtins); 436 } 437 438 439 /* 440 * Add command table to the specified list 441 * Arg: 442 * int type specifies type of command table DDB_SHOW_CMD|DDB_BASE_CMD|DDB_MAC_CMD 443 * *cmd_tbl poiter to static allocated db_command table 444 * 445 * Command table must be NULL terminated array of struct db_command 446 */ 447 int 448 db_register_tbl(uint8_t type, const struct db_command *cmd_tbl) 449 { 450 struct db_cmd_tbl_en *list_ent; 451 452 /* empty list - ignore */ 453 if (cmd_tbl->name == 0) 454 return 0; 455 456 /* force builtin commands to be registered first */ 457 db_init_commands(); 458 459 /* now create a list entry for this table */ 460 list_ent = db_zalloc(sizeof(*list_ent)); 461 if (list_ent == NULL) 462 return ENOMEM; 463 list_ent->db_cmd=cmd_tbl; 464 465 /* and register it */ 466 return db_register_tbl_entry(type, list_ent); 467 } 468 469 static int 470 db_register_tbl_entry(uint8_t type, struct db_cmd_tbl_en *list_ent) 471 { 472 struct db_cmd_tbl_en_head *list; 473 474 switch(type) { 475 case DDB_BASE_CMD: 476 list = &db_base_cmd_list; 477 break; 478 case DDB_SHOW_CMD: 479 list = &db_show_cmd_list; 480 break; 481 case DDB_MACH_CMD: 482 list = &db_mach_cmd_list; 483 break; 484 default: 485 return ENOENT; 486 } 487 488 TAILQ_INSERT_TAIL(list, list_ent, db_cmd_next); 489 490 return 0; 491 } 492 493 /* 494 * Remove command table specified with db_cmd address == cmd_tbl 495 */ 496 int 497 db_unregister_tbl(uint8_t type,const struct db_command *cmd_tbl) 498 { 499 struct db_cmd_tbl_en *list_ent; 500 struct db_cmd_tbl_en_head *list; 501 502 /* find list on which the entry should live */ 503 switch (type) { 504 case DDB_BASE_CMD: 505 list=&db_base_cmd_list; 506 break; 507 case DDB_SHOW_CMD: 508 list=&db_show_cmd_list; 509 break; 510 case DDB_MACH_CMD: 511 list=&db_mach_cmd_list; 512 break; 513 default: 514 return EINVAL; 515 } 516 517 TAILQ_FOREACH (list_ent, list, db_cmd_next) { 518 if (list_ent->db_cmd == cmd_tbl){ 519 TAILQ_REMOVE(list, 520 list_ent, db_cmd_next); 521 db_free(list_ent, sizeof(*list_ent)); 522 return 0; 523 } 524 } 525 return ENOENT; 526 } 527 528 /* This function is called from machine trap code. */ 529 void 530 db_command_loop(void) 531 { 532 label_t db_jmpbuf; 533 label_t *savejmp; 534 535 /* 536 * Initialize 'prev' and 'next' to dot. 537 */ 538 db_prev = db_dot; 539 db_next = db_dot; 540 541 db_cmd_loop_done = false; 542 543 /* Init default command tables add machine, base, 544 show command tables to the list */ 545 db_init_commands(); 546 547 /* save context for return from ddb */ 548 savejmp = db_recover; 549 db_recover = &db_jmpbuf; 550 (void) setjmp(&db_jmpbuf); 551 552 /* Execute default ddb start commands */ 553 db_execute_commandlist(db_cmd_on_enter); 554 555 (void) setjmp(&db_jmpbuf); 556 while (!db_cmd_loop_done) { 557 if (db_print_position() != 0) 558 db_printf("\n"); 559 db_output_line = 0; 560 (void) db_read_line(); 561 db_command(&db_last_command); 562 } 563 564 db_recover = savejmp; 565 } 566 567 /* 568 * Search command table for command prefix 569 */ 570 static int 571 db_cmd_search_table(const char *name, 572 const struct db_command *table, 573 const struct db_command **cmdp) 574 { 575 576 const struct db_command *cmd; 577 int result; 578 579 result = CMD_NONE; 580 *cmdp = NULL; 581 582 for (cmd = table; cmd->name != 0; cmd++) { 583 const char *lp; 584 const char *rp; 585 586 lp = name; 587 rp = cmd->name; 588 while (*lp != '\0' && *lp == *rp) { 589 rp++; 590 lp++; 591 } 592 593 if (*lp != '\0') /* mismatch or extra chars in name */ 594 continue; 595 596 if (*rp == '\0') { /* exact match */ 597 *cmdp = cmd; 598 return (CMD_EXACT); 599 } 600 601 /* prefix match: end of name, not end of command */ 602 if (result == CMD_NONE) { 603 result = CMD_PREFIX; 604 *cmdp = cmd; 605 } 606 else if (result == CMD_PREFIX) { 607 result = CMD_AMBIGUOUS; 608 *cmdp = NULL; 609 } 610 } 611 612 return (result); 613 } 614 615 616 /* 617 * Search list of command tables for command 618 */ 619 static int 620 db_cmd_search(const char *name, 621 struct db_cmd_tbl_en_head *list_head, 622 const struct db_command **cmdp) 623 { 624 struct db_cmd_tbl_en *list_ent; 625 const struct db_command *found_command; 626 bool accept_prefix_match; 627 int result; 628 629 result = CMD_NONE; 630 found_command = NULL; 631 accept_prefix_match = true; 632 633 TAILQ_FOREACH(list_ent, list_head, db_cmd_next) { 634 const struct db_command *cmd; 635 int found; 636 637 found = db_cmd_search_table(name, list_ent->db_cmd, &cmd); 638 if (found == CMD_EXACT) { 639 result = CMD_EXACT; 640 found_command = cmd; 641 break; 642 } 643 644 if (found == CMD_PREFIX) { 645 if (accept_prefix_match) { 646 /* 647 * Continue search, but note current result 648 * in case we won't find anything else. 649 */ 650 accept_prefix_match = false; 651 result = CMD_PREFIX; 652 found_command = cmd; 653 } else { 654 /* 655 * Watch out for globally ambiguous 656 * prefix match that is not locally 657 * ambiguous - with one match in one 658 * table and another match(es) in 659 * another table. 660 */ 661 result = CMD_AMBIGUOUS; 662 found_command = NULL; 663 } 664 } 665 else if (found == CMD_AMBIGUOUS) { 666 accept_prefix_match = false; 667 result = CMD_AMBIGUOUS; 668 found_command = NULL; 669 } 670 } 671 672 *cmdp = found_command; 673 return result; 674 } 675 676 static void 677 db_cmd_search_failed(char *name, int search_result) 678 { 679 if (search_result == CMD_NONE) 680 db_printf("No such command: %s\n", name); 681 else 682 db_printf("Ambiguous command: %s\n", name); 683 } 684 685 686 /* 687 * List commands to the console. 688 */ 689 static void 690 db_cmd_list(const struct db_cmd_tbl_en_head *list) 691 { 692 693 struct db_cmd_tbl_en *list_ent; 694 const struct db_command *table; 695 size_t i, j, w, columns, lines, numcmds, width=0; 696 const char *p; 697 698 TAILQ_FOREACH(list_ent,list,db_cmd_next) { 699 table = list_ent->db_cmd; 700 for (i = 0; table[i].name != NULL; i++) { 701 w = strlen(table[i].name); 702 if (w > width) 703 width = w; 704 } 705 } 706 707 width = DB_NEXT_TAB(width); 708 709 columns = db_max_width / width; 710 if (columns == 0) 711 columns = 1; 712 713 TAILQ_FOREACH(list_ent,list,db_cmd_next) { 714 table = list_ent->db_cmd; 715 716 for (numcmds = 0; table[numcmds].name != NULL; numcmds++) 717 ; 718 lines = (numcmds + columns - 1) / columns; 719 720 for (i = 0; i < lines; i++) { 721 for (j = 0; j < columns; j++) { 722 p = table[j * lines + i].name; 723 if (p) 724 db_printf("%s", p); 725 if (j * lines + i + lines >= numcmds) { 726 db_putchar('\n'); 727 break; 728 } 729 if (p) { 730 w = strlen(p); 731 while (w < width) { 732 w = DB_NEXT_TAB(w); 733 db_putchar('\t'); 734 } 735 } 736 } 737 } 738 } 739 return; 740 } 741 742 /* 743 * Read complete command with all subcommands, starting with current 744 * db_tok_string. If subcommand is missing, print the list of all 745 * subcommands. If command/subcommand is not found, print an error 746 * message. Returns pointer to "leaf" command or NULL. 747 */ 748 static const struct db_command * 749 db_read_command(void) 750 { 751 const struct db_command *command; 752 struct db_cmd_tbl_en_head *list; 753 int found; 754 int t; 755 756 list = &db_base_cmd_list; 757 do { 758 found = db_cmd_search(db_tok_string, list, &command); 759 if (command == NULL) { 760 db_cmd_search_failed(db_tok_string, found); 761 db_flush_lex(); 762 return NULL; 763 } 764 765 if (command->flag == CS_SHOW) 766 list = &db_show_cmd_list; 767 else if (command->flag == CS_MACH) 768 list = &db_mach_cmd_list; 769 else if (command->flag == CS_COMPAT) 770 /* same list */; 771 else 772 break; /* expect no more subcommands */ 773 774 t = db_read_token(); /* read subcommand */ 775 if (t != tIDENT) { 776 /* if none given - just print all of them */ 777 db_cmd_list(list); 778 db_flush_lex(); 779 return NULL; 780 } 781 } while (list != NULL); 782 783 return command; 784 } 785 786 /* 787 * Parse command line and execute apropriate function. 788 */ 789 static void 790 db_command(const struct db_command **last_cmdp) 791 { 792 const struct db_command *command; 793 static db_expr_t last_count = 0; 794 db_expr_t addr, count; 795 char modif[TOK_STRING_SIZE]; 796 797 int t; 798 bool have_addr = false; 799 800 command = NULL; 801 802 t = db_read_token(); 803 if ((t == tEOL) || (t == tCOMMA)) { 804 /* 805 * An empty line repeats last command, at 'next'. 806 * Only a count repeats the last command with the new count. 807 */ 808 command = *last_cmdp; 809 810 if (!command) 811 return; 812 813 addr = (db_expr_t)db_next; 814 if (t == tCOMMA) { 815 if (!db_expression(&count)) { 816 db_printf("Count missing\n"); 817 db_flush_lex(); 818 return; 819 } 820 } else 821 count = last_count; 822 have_addr = false; 823 modif[0] = '\0'; 824 db_skip_to_eol(); 825 826 } else if (t == tEXCL) { 827 db_fncall(0, 0, 0, NULL); 828 return; 829 830 } else if (t != tIDENT) { 831 db_printf("?\n"); 832 db_flush_lex(); 833 return; 834 835 } else { 836 837 command = db_read_command(); 838 if (command == NULL) 839 return; 840 841 if ((command->flag & CS_OWN) == 0) { 842 843 /* 844 * Standard syntax: 845 * command [/modifier] [addr] [,count] 846 */ 847 t = db_read_token(); /* get modifier */ 848 if (t == tSLASH) { 849 t = db_read_token(); 850 if (t != tIDENT) { 851 db_printf("Bad modifier\n"); 852 db_flush_lex(); 853 return; 854 } 855 /* save modifier */ 856 strlcpy(modif, db_tok_string, sizeof(modif)); 857 858 } else { 859 db_unread_token(t); 860 modif[0] = '\0'; 861 } 862 863 if (db_expression(&addr)) { /*get address*/ 864 db_dot = (db_addr_t) addr; 865 db_last_addr = db_dot; 866 have_addr = true; 867 } else { 868 addr = (db_expr_t) db_dot; 869 have_addr = false; 870 } 871 872 t = db_read_token(); 873 if (t == tCOMMA) { /*Get count*/ 874 if (!db_expression(&count)) { 875 db_printf("Count missing\n"); 876 db_flush_lex(); 877 return; 878 } 879 } else { 880 db_unread_token(t); 881 count = -1; 882 } 883 if ((command->flag & CS_MORE) == 0) { 884 db_skip_to_eol(); 885 } 886 } 887 } 888 889 if (command != NULL && command->flag & CS_NOREPEAT) { 890 *last_cmdp = NULL; 891 last_count = 0; 892 } else { 893 *last_cmdp = command; 894 last_count = count; 895 } 896 897 898 if (command != NULL) { 899 /* 900 * Execute the command. 901 */ 902 if (command->fcn != NULL) 903 (*command->fcn)(addr, have_addr, count, modif); 904 905 if (command->flag & CS_SET_DOT) { 906 /* 907 * If command changes dot, set dot to 908 * previous address displayed (if 'ed' style). 909 */ 910 if (db_ed_style) 911 db_dot = db_prev; 912 else 913 db_dot = db_next; 914 } else { 915 /* 916 * If command does not change dot, 917 * set 'next' location to be the same. 918 */ 919 db_next = db_dot; 920 } 921 } 922 } 923 924 /* 925 * Print help for commands 926 */ 927 static void 928 db_help_print_cmd(db_expr_t addr, bool have_addr, db_expr_t count, 929 const char *modif) 930 { 931 const struct db_command *command; 932 int t; 933 934 t = db_read_token(); 935 936 /* is there another command after the "help"? */ 937 if (t != tIDENT) { 938 /* print base commands */ 939 db_cmd_list(&db_base_cmd_list); 940 return; 941 } 942 943 command = db_read_command(); 944 if (command == NULL) 945 return; 946 947 #ifdef DDB_VERBOSE_HELP 948 db_printf("Command: %s\n", command->name); 949 if (command->cmd_descr != NULL) 950 db_printf(" Description: %s\n", command->cmd_descr); 951 if (command->cmd_arg != NULL) 952 db_printf(" Arguments: %s\n", command->cmd_arg); 953 if (command->cmd_arg_help != NULL) 954 db_printf(" Arguments description:\n%s\n", 955 command->cmd_arg_help); 956 if ((command->cmd_arg == NULL) && (command->cmd_descr == NULL)) 957 db_printf(" No help message.\n"); 958 #endif 959 960 db_skip_to_eol(); 961 } 962 963 /*ARGSUSED*/ 964 static void 965 db_map_print_cmd(db_expr_t addr, bool have_addr, db_expr_t count, 966 const char *modif) 967 { 968 #ifdef _KERNEL 969 bool full = false; 970 971 if (modif[0] == 'f') 972 full = true; 973 974 if (have_addr == false) 975 addr = (db_expr_t)(uintptr_t)db_read_ptr("kernel_map"); 976 977 uvm_map_printit((struct vm_map *)(uintptr_t) addr, full, db_printf); 978 #endif /* XXX CRASH(8) */ 979 } 980 981 /*ARGSUSED*/ 982 static void 983 db_object_print_cmd(db_expr_t addr, bool have_addr, 984 db_expr_t count, const char *modif) 985 { 986 #ifdef _KERNEL /* XXX CRASH(8) */ 987 bool full = false; 988 989 if (modif[0] == 'f') 990 full = true; 991 992 uvm_object_printit((struct uvm_object *)(uintptr_t) addr, full, 993 db_printf); 994 #endif 995 } 996 997 /*ARGSUSED*/ 998 static void 999 db_page_print_cmd(db_expr_t addr, bool have_addr, 1000 db_expr_t count, const char *modif) 1001 { 1002 #ifdef _KERNEL /* XXX CRASH(8) */ 1003 bool full = false; 1004 1005 if (modif[0] == 'f') 1006 full = true; 1007 1008 uvm_page_printit((struct vm_page *)(uintptr_t) addr, full, db_printf); 1009 #endif 1010 } 1011 1012 /*ARGSUSED*/ 1013 static void 1014 db_show_all_pages(db_expr_t addr, bool have_addr, 1015 db_expr_t count, const char *modif) 1016 { 1017 1018 #ifdef _KERNEL /* XXX CRASH(8) */ 1019 uvm_page_printall(db_printf); 1020 #endif 1021 } 1022 1023 /*ARGSUSED*/ 1024 static void 1025 db_buf_print_cmd(db_expr_t addr, bool have_addr, 1026 db_expr_t count, const char *modif) 1027 { 1028 #ifdef _KERNEL /* XXX CRASH(8) */ 1029 bool full = false; 1030 1031 if (modif[0] == 'f') 1032 full = true; 1033 1034 vfs_buf_print((struct buf *)(uintptr_t) addr, full, db_printf); 1035 #endif 1036 } 1037 1038 /*ARGSUSED*/ 1039 static void 1040 db_event_print_cmd(db_expr_t addr, bool have_addr, 1041 db_expr_t count, const char *modif) 1042 { 1043 bool showzero = false; 1044 bool showall = true; 1045 bool showintr = false; 1046 bool showtrap = false; 1047 bool showmisc = false; 1048 struct evcnt ev, *evp; 1049 char buf[80]; 1050 int i; 1051 1052 i = 0; 1053 while (modif[i]) { 1054 switch (modif[i]) { 1055 case 'f': 1056 showzero = true; 1057 break; 1058 case 'i': 1059 showintr = true; 1060 showall = false; 1061 break; 1062 case 't': 1063 showtrap = true; 1064 showall = false; 1065 break; 1066 case 'm': 1067 showmisc = true; 1068 showall = false; 1069 break; 1070 } 1071 i++; 1072 } 1073 1074 if (showall) 1075 showmisc = showintr = showtrap = true; 1076 1077 evp = (struct evcnt *)db_read_ptr("allevents"); 1078 while (evp != NULL) { 1079 db_read_bytes((db_addr_t)evp, sizeof(ev), (char *)&ev); 1080 evp = ev.ev_list.tqe_next; 1081 if (ev.ev_count == 0 && !showzero) 1082 continue; 1083 if (ev.ev_type == EVCNT_TYPE_INTR && !showintr) 1084 continue; 1085 if (ev.ev_type == EVCNT_TYPE_TRAP && !showtrap) 1086 continue; 1087 if (ev.ev_type == EVCNT_TYPE_MISC && !showmisc) 1088 continue; 1089 db_read_bytes((db_addr_t)ev.ev_group, ev.ev_grouplen + 1, buf); 1090 db_printf("evcnt type %d: %s ", ev.ev_type, buf); 1091 db_read_bytes((db_addr_t)ev.ev_name, ev.ev_namelen + 1, buf); 1092 db_printf("%s = %lld\n", buf, (long long)ev.ev_count); 1093 } 1094 } 1095 1096 /*ARGSUSED*/ 1097 static void 1098 db_vnode_print_cmd(db_expr_t addr, bool have_addr, 1099 db_expr_t count, const char *modif) 1100 { 1101 #ifdef _KERNEL /* XXX CRASH(8) */ 1102 bool full = false; 1103 1104 if (modif[0] == 'f') 1105 full = true; 1106 1107 vfs_vnode_print((struct vnode *)(uintptr_t) addr, full, db_printf); 1108 #endif 1109 } 1110 1111 /*ARGSUSED*/ 1112 static void 1113 db_vmem_print_cmd(db_expr_t addr, bool have_addr, 1114 db_expr_t count, const char *modif) 1115 { 1116 1117 #ifdef _KERNEL /* XXX CRASH(8) */ 1118 vmem_print((uintptr_t) addr, modif, db_printf); 1119 #endif 1120 } 1121 1122 static void 1123 db_mount_print_cmd(db_expr_t addr, bool have_addr, 1124 db_expr_t count, const char *modif) 1125 { 1126 #ifdef _KERNEL /* XXX CRASH(8) */ 1127 bool full = false; 1128 1129 if (modif[0] == 'f') 1130 full = true; 1131 1132 vfs_mount_print((struct mount *)(uintptr_t) addr, full, db_printf); 1133 #endif 1134 } 1135 1136 /*ARGSUSED*/ 1137 static void 1138 db_mbuf_print_cmd(db_expr_t addr, bool have_addr, 1139 db_expr_t count, const char *modif) 1140 { 1141 1142 #ifdef _KERNEL /* XXX CRASH(8) */ 1143 m_print((const struct mbuf *)(uintptr_t) addr, modif, db_printf); 1144 #endif 1145 } 1146 1147 /*ARGSUSED*/ 1148 static void 1149 db_pool_print_cmd(db_expr_t addr, bool have_addr, 1150 db_expr_t count, const char *modif) 1151 { 1152 1153 #ifdef _KERNEL /* XXX CRASH(8) */ 1154 pool_printit((struct pool *)(uintptr_t) addr, modif, db_printf); 1155 #endif 1156 } 1157 1158 /*ARGSUSED*/ 1159 static void 1160 db_namecache_print_cmd(db_expr_t addr, bool have_addr, 1161 db_expr_t count, const char *modif) 1162 { 1163 1164 #ifdef _KERNEL /* XXX CRASH(8) */ 1165 namecache_print((struct vnode *)(uintptr_t) addr, db_printf); 1166 #endif 1167 } 1168 1169 /*ARGSUSED*/ 1170 static void 1171 db_uvmexp_print_cmd(db_expr_t addr, bool have_addr, 1172 db_expr_t count, const char *modif) 1173 { 1174 1175 #ifdef _KERNEL /* XXX CRASH(8) */ 1176 uvmexp_print(db_printf); 1177 #endif 1178 } 1179 1180 #ifdef KERNHIST 1181 /*ARGSUSED*/ 1182 static void 1183 db_kernhist_print_cmd(db_expr_t addr, bool have_addr, 1184 db_expr_t count, const char *modif) 1185 { 1186 1187 kernhist_print(db_printf); 1188 } 1189 #endif 1190 1191 /*ARGSUSED*/ 1192 static void 1193 db_lock_print_cmd(db_expr_t addr, bool have_addr, 1194 db_expr_t count, const char *modif) 1195 { 1196 1197 #ifdef _KERNEL /* XXX CRASH(8) */ 1198 lockdebug_lock_print((void *)(uintptr_t)addr, db_printf); 1199 #endif 1200 } 1201 1202 /* 1203 * Call random function: 1204 * !expr(arg,arg,arg) 1205 */ 1206 /*ARGSUSED*/ 1207 static void 1208 db_fncall(db_expr_t addr, bool have_addr, 1209 db_expr_t count, const char *modif) 1210 { 1211 #ifdef _KERNEL 1212 db_expr_t fn_addr; 1213 #define MAXARGS 11 1214 db_expr_t args[MAXARGS]; 1215 int nargs = 0; 1216 db_expr_t retval; 1217 db_expr_t (*func)(db_expr_t, ...); 1218 int t; 1219 1220 if (!db_expression(&fn_addr)) { 1221 db_printf("Bad function\n"); 1222 db_flush_lex(); 1223 return; 1224 } 1225 func = (db_expr_t (*)(db_expr_t, ...))(uintptr_t) fn_addr; 1226 1227 t = db_read_token(); 1228 if (t == tLPAREN) { 1229 if (db_expression(&args[0])) { 1230 nargs++; 1231 while ((t = db_read_token()) == tCOMMA) { 1232 if (nargs == MAXARGS) { 1233 db_printf("Too many arguments\n"); 1234 db_flush_lex(); 1235 return; 1236 } 1237 if (!db_expression(&args[nargs])) { 1238 db_printf("Argument missing\n"); 1239 db_flush_lex(); 1240 return; 1241 } 1242 nargs++; 1243 } 1244 db_unread_token(t); 1245 } 1246 if (db_read_token() != tRPAREN) { 1247 db_printf("?\n"); 1248 db_flush_lex(); 1249 return; 1250 } 1251 } 1252 db_skip_to_eol(); 1253 1254 while (nargs < MAXARGS) { 1255 args[nargs++] = 0; 1256 } 1257 1258 retval = (*func)(args[0], args[1], args[2], args[3], args[4], 1259 args[5], args[6], args[7], args[8], args[9]); 1260 db_printf("%s\n", db_num_to_str(retval)); 1261 #else /* _KERNEL */ 1262 db_printf("This command can only be used in-kernel.\n"); 1263 #endif /* _KERNEL */ 1264 } 1265 1266 static void 1267 db_reboot_cmd(db_expr_t addr, bool have_addr, 1268 db_expr_t count, const char *modif) 1269 { 1270 #ifdef _KERNEL 1271 db_expr_t bootflags; 1272 1273 /* Flags, default to RB_AUTOBOOT */ 1274 if (!db_expression(&bootflags)) 1275 bootflags = (db_expr_t)RB_AUTOBOOT; 1276 if (db_read_token() != tEOL) { 1277 db_error("?\n"); 1278 /*NOTREACHED*/ 1279 } 1280 /* 1281 * We are leaving DDB, never to return upward. 1282 * Clear db_recover so that we can debug faults in functions 1283 * called from cpu_reboot. 1284 */ 1285 db_recover = 0; 1286 panicstr = "reboot forced via kernel debugger"; 1287 cpu_reboot((int)bootflags, NULL); 1288 #else /* _KERNEL */ 1289 db_printf("This command can only be used in-kernel.\n"); 1290 #endif /* _KERNEL */ 1291 } 1292 1293 static void 1294 db_sifting_cmd(db_expr_t addr, bool have_addr, 1295 db_expr_t count, const char *modif) 1296 { 1297 int mode, t; 1298 1299 t = db_read_token(); 1300 if (t == tSLASH) { 1301 t = db_read_token(); 1302 if (t != tIDENT) { 1303 bad_modifier: 1304 db_printf("Bad modifier\n"); 1305 db_flush_lex(); 1306 return; 1307 } 1308 if (!strcmp(db_tok_string, "F")) 1309 mode = 'F'; 1310 else 1311 goto bad_modifier; 1312 t = db_read_token(); 1313 } else 1314 mode = 0; 1315 1316 if (t == tIDENT) 1317 db_sifting(db_tok_string, mode); 1318 else { 1319 db_printf("Bad argument (non-string)\n"); 1320 db_flush_lex(); 1321 } 1322 } 1323 1324 static void 1325 db_stack_trace_cmd(db_expr_t addr, bool have_addr, db_expr_t count, const char *modif) 1326 { 1327 register const char *cp = modif; 1328 register char c; 1329 void (*pr)(const char *, ...); 1330 1331 pr = db_printf; 1332 while ((c = *cp++) != 0) 1333 if (c == 'l') 1334 pr = (void (*)(const char *, ...))printf; 1335 1336 if (count == -1) 1337 count = 65535; 1338 1339 db_stack_trace_print(addr, have_addr, count, modif, pr); 1340 } 1341 1342 static void 1343 db_sync_cmd(db_expr_t addr, bool have_addr, 1344 db_expr_t count, const char *modif) 1345 { 1346 #ifdef _KERNEL 1347 /* 1348 * We are leaving DDB, never to return upward. 1349 * Clear db_recover so that we can debug faults in functions 1350 * called from cpu_reboot. 1351 */ 1352 db_recover = 0; 1353 panicstr = "dump forced via kernel debugger"; 1354 cpu_reboot(RB_DUMP, NULL); 1355 #else /* _KERNEL */ 1356 db_printf("This command can only be used in-kernel.\n"); 1357 #endif /* _KERNEL */ 1358 } 1359 1360 /* 1361 * Describe what an address is 1362 */ 1363 void 1364 db_whatis_cmd(db_expr_t address, bool have_addr, 1365 db_expr_t count, const char *modif) 1366 { 1367 const uintptr_t addr = (uintptr_t)address; 1368 1369 db_lwp_whatis(addr, db_printf); 1370 #ifdef _KERNEL /* XXX CRASH(8) */ 1371 pool_whatis(addr, db_printf); 1372 vmem_whatis(addr, db_printf); 1373 uvm_whatis(addr, db_printf); 1374 module_whatis(addr, db_printf); 1375 #endif 1376 } 1377
Indexes created Tue Sep 30 07:10:03 GMT 2025