db_command.c revision 1.131
1 /* $NetBSD: db_command.c,v 1.131 2009/03/21 13:06:39 ad 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 1.131 2009/03/21 13:06:39 ad Exp $"); 64 65 #ifdef _KERNEL_OPT 66 #include "opt_aio.h" 67 #include "opt_ddb.h" 68 #include "opt_kgdb.h" 69 #include "opt_inet.h" 70 #include "opt_uvmhist.h" 71 #include "opt_ddbparam.h" 72 #include "opt_multiprocessor.h" 73 #include "arp.h" 74 #endif 75 76 #include <sys/param.h> 77 #include <sys/systm.h> 78 #include <sys/reboot.h> 79 #include <sys/device.h> 80 #include <sys/lwp.h> 81 #include <sys/malloc.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 93 /*include queue macros*/ 94 #include <sys/queue.h> 95 96 #include <ddb/ddb.h> 97 98 #include <uvm/uvm_extern.h> 99 #include <uvm/uvm_ddb.h> 100 101 /* 102 * Results of command search. 103 */ 104 #define CMD_EXACT 0 105 #define CMD_PREFIX 1 106 #define CMD_NONE 2 107 #define CMD_AMBIGUOUS 3 108 109 /* 110 * Exported global variables 111 */ 112 bool db_cmd_loop_done; 113 label_t *db_recover; 114 db_addr_t db_dot; 115 db_addr_t db_last_addr; 116 db_addr_t db_prev; 117 db_addr_t db_next; 118 119 120 /* 121 * New DDB api for adding and removing commands uses three lists, because 122 * we use two types of commands 123 * a) standard commands without subcommands -> reboot 124 * b) show commands which are subcommands of show command -> show aio_jobs 125 * c) if defined machine specific commands 126 * 127 * ddb_add_cmd, ddb_rem_cmd use type (DDB_SHOW_CMD||DDB_BASE_CMD)argument to 128 * add them to representativ lists. 129 */ 130 131 static const struct db_command db_command_table[]; 132 static const struct db_command db_show_cmds[]; 133 134 #ifdef DB_MACHINE_COMMANDS 135 static const struct db_command db_machine_command_table[]; 136 #endif 137 138 /* the global queue of all command tables */ 139 TAILQ_HEAD(db_cmd_tbl_en_head, db_cmd_tbl_en); 140 141 /* TAILQ entry used to register command tables */ 142 struct db_cmd_tbl_en { 143 const struct db_command *db_cmd; /* cmd table */ 144 TAILQ_ENTRY(db_cmd_tbl_en) db_cmd_next; 145 }; 146 147 /* head of base commands list */ 148 static struct db_cmd_tbl_en_head db_base_cmd_list = 149 TAILQ_HEAD_INITIALIZER(db_base_cmd_list); 150 static struct db_cmd_tbl_en db_base_cmd_builtins = 151 { .db_cmd = db_command_table }; 152 153 /* head of show commands list */ 154 static struct db_cmd_tbl_en_head db_show_cmd_list = 155 TAILQ_HEAD_INITIALIZER(db_show_cmd_list); 156 static struct db_cmd_tbl_en db_show_cmd_builtins = 157 { .db_cmd = db_show_cmds }; 158 159 /* head of machine commands list */ 160 static struct db_cmd_tbl_en_head db_mach_cmd_list = 161 TAILQ_HEAD_INITIALIZER(db_mach_cmd_list); 162 #ifdef DB_MACHINE_COMMANDS 163 static struct db_cmd_tbl_en db_mach_cmd_builtins = 164 { .db_cmd = db_machine_command_table }; 165 #endif 166 167 /* 168 * if 'ed' style: 'dot' is set at start of last item printed, 169 * and '+' points to next line. 170 * Otherwise: 'dot' points to next item, '..' points to last. 171 */ 172 static bool db_ed_style = true; 173 174 static void db_init_commands(void); 175 static int db_register_tbl_entry(uint8_t type, 176 struct db_cmd_tbl_en *list_ent); 177 static void db_cmd_list(const struct db_cmd_tbl_en_head *); 178 static int db_cmd_search(const char *, struct db_cmd_tbl_en_head *, 179 const struct db_command **); 180 static int db_cmd_search_table(const char *, const struct db_command *, 181 const struct db_command **); 182 static void db_cmd_search_failed(char *, int); 183 static const struct db_command *db_read_command(void); 184 static void db_command(const struct db_command **); 185 static void db_buf_print_cmd(db_expr_t, bool, db_expr_t, const char *); 186 static void db_event_print_cmd(db_expr_t, bool, db_expr_t, const char *); 187 static void db_fncall(db_expr_t, bool, db_expr_t, const char *); 188 static void db_help_print_cmd(db_expr_t, bool, db_expr_t, const char *); 189 static void db_lock_print_cmd(db_expr_t, bool, db_expr_t, const char *); 190 static void db_mount_print_cmd(db_expr_t, bool, db_expr_t, const char *); 191 static void db_mbuf_print_cmd(db_expr_t, bool, db_expr_t, const char *); 192 static void db_malloc_print_cmd(db_expr_t, bool, db_expr_t, const char *); 193 static void db_map_print_cmd(db_expr_t, bool, db_expr_t, const char *); 194 static void db_namecache_print_cmd(db_expr_t, bool, db_expr_t, 195 const char *); 196 static void db_object_print_cmd(db_expr_t, bool, db_expr_t, const char *); 197 static void db_page_print_cmd(db_expr_t, bool, db_expr_t, const char *); 198 static void db_show_all_pages(db_expr_t, bool, db_expr_t, const char *); 199 static void db_pool_print_cmd(db_expr_t, bool, db_expr_t, const char *); 200 static void db_reboot_cmd(db_expr_t, bool, db_expr_t, const char *); 201 static void db_sifting_cmd(db_expr_t, bool, db_expr_t, const char *); 202 static void db_stack_trace_cmd(db_expr_t, bool, db_expr_t, const char *); 203 static void db_sync_cmd(db_expr_t, bool, db_expr_t, const char *); 204 static void db_whatis_cmd(db_expr_t, bool, db_expr_t, const char *); 205 static void db_uvmexp_print_cmd(db_expr_t, bool, db_expr_t, const char *); 206 #ifdef UVMHIST 207 static void db_uvmhist_print_cmd(db_expr_t, bool, db_expr_t, const char *); 208 #endif 209 static void db_vnode_print_cmd(db_expr_t, bool, db_expr_t, const char *); 210 static void db_vmem_print_cmd(db_expr_t, bool, db_expr_t, const char *); 211 212 static const struct db_command db_show_cmds[] = { 213 /*added from all sub cmds*/ 214 #ifdef _KERNEL /* XXX CRASH(8) */ 215 { DDB_ADD_CMD("callout", db_show_callout, 216 0 ,"List all used callout functions.",NULL,NULL) }, 217 #endif 218 { DDB_ADD_CMD("pages", db_show_all_pages, 219 0 ,"List all used memory pages.",NULL,NULL) }, 220 { DDB_ADD_CMD("procs", db_show_all_procs, 221 0 ,"List all processes.",NULL,NULL) }, 222 { DDB_ADD_CMD("pools", db_show_all_pools, 223 0 ,"Show all poolS",NULL,NULL) }, 224 #ifdef AIO 225 /*added from all sub cmds*/ 226 { DDB_ADD_CMD("aio_jobs", db_show_aio_jobs, 0, 227 "Show aio jobs",NULL,NULL) }, 228 #endif 229 { DDB_ADD_CMD("all", NULL, 230 CS_COMPAT, NULL,NULL,NULL) }, 231 #if defined(INET) && (NARP > 0) 232 { DDB_ADD_CMD("arptab", db_show_arptab, 0,NULL,NULL,NULL) }, 233 #endif 234 #ifdef _KERNEL 235 { DDB_ADD_CMD("breaks", db_listbreak_cmd, 0, 236 "Display all breaks.",NULL,NULL) }, 237 #endif 238 { DDB_ADD_CMD("buf", db_buf_print_cmd, 0, 239 "Print the struct buf at address.", "[/f] address",NULL) }, 240 { DDB_ADD_CMD("event", db_event_print_cmd, 0, 241 "Print all the non-zero evcnt(9) event counters.", "[/f]",NULL) }, 242 { DDB_ADD_CMD("files", db_show_files_cmd, 0, 243 "Print the files open by process at address", 244 "[/f] address", NULL) }, 245 { DDB_ADD_CMD("lock", db_lock_print_cmd, 0,NULL,NULL,NULL) }, 246 { DDB_ADD_CMD("malloc", db_malloc_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 { DDB_ADD_CMD("mqueue", db_show_mqueue_cmd, 0, 254 "Print the message queues", NULL, NULL) }, 255 { DDB_ADD_CMD("mbuf", db_mbuf_print_cmd, 0,NULL,NULL, 256 "-c prints all mbuf chains") }, 257 { DDB_ADD_CMD("ncache", db_namecache_print_cmd, 0, 258 "Dump the namecache list.", "address",NULL) }, 259 { DDB_ADD_CMD("object", db_object_print_cmd, 0, 260 "Print the vm_object at address.", "[/f] address",NULL) }, 261 { DDB_ADD_CMD("page", db_page_print_cmd, 0, 262 "Print the vm_page at address.", "[/f] address",NULL) }, 263 { DDB_ADD_CMD("pool", db_pool_print_cmd, 0, 264 "Print the pool at address.", "[/clp] address",NULL) }, 265 { DDB_ADD_CMD("registers", db_show_regs, 0, 266 "Display the register set.", "[/u]",NULL) }, 267 { DDB_ADD_CMD("sched_qs", db_show_sched_qs, 0, 268 "Print the state of the scheduler's run queues.", 269 NULL,NULL) }, 270 { DDB_ADD_CMD("uvmexp", db_uvmexp_print_cmd, 0, 271 "Print a selection of UVM counters and statistics.", 272 NULL,NULL) }, 273 #ifdef UVMHIST 274 { DDB_ADD_CMD("uvmhist", db_uvmhist_print_cmd, 0, 275 "Print the UVM history logs.", 276 NULL,NULL) }, 277 #endif 278 { DDB_ADD_CMD("vnode", db_vnode_print_cmd, 0, 279 "Print the vnode at address.", "[/f] address",NULL) }, 280 { DDB_ADD_CMD("vmem", db_vmem_print_cmd, 0, 281 "Print the vmem usage.", "[/a] address", NULL) }, 282 { DDB_ADD_CMD("vmems", db_show_all_vmems, 0, 283 "Show all vmems.", NULL, NULL) }, 284 #ifdef _KERNEL 285 { DDB_ADD_CMD("watches", db_listwatch_cmd, 0, 286 "Display all watchpoints.", NULL,NULL) }, 287 #endif 288 { DDB_ADD_CMD(NULL, NULL, 0,NULL,NULL,NULL) } 289 }; 290 291 /* arch/<arch>/<arch>/db_interface.c */ 292 #ifdef DB_MACHINE_COMMANDS 293 extern const struct db_command db_machine_command_table[]; 294 #endif 295 296 static const struct db_command db_command_table[] = { 297 { DDB_ADD_CMD("b", db_breakpoint_cmd, 0, 298 "Set a breakpoint at address", "[/u] address[,count].",NULL) }, 299 { DDB_ADD_CMD("break", db_breakpoint_cmd, 0, 300 "Set a breakpoint at address", "[/u] address[,count].",NULL) }, 301 { DDB_ADD_CMD("bt", db_stack_trace_cmd, 0, 302 "Show backtrace.", "See help trace.",NULL) }, 303 { DDB_ADD_CMD("c", db_continue_cmd, 0, 304 "Continue execution.", "[/c]",NULL) }, 305 { DDB_ADD_CMD("call", db_fncall, CS_OWN, 306 "Call the function", "address[(expression[,...])]",NULL) }, 307 #ifdef _KERNEL /* XXX CRASH(8) */ 308 { DDB_ADD_CMD("callout", db_show_callout, 0, NULL, 309 NULL,NULL ) }, 310 #endif 311 { DDB_ADD_CMD("continue", db_continue_cmd, 0, 312 "Continue execution.", "[/c]",NULL) }, 313 { DDB_ADD_CMD("d", db_delete_cmd, 0, 314 "Delete a breakpoint.", "address | #number",NULL) }, 315 { DDB_ADD_CMD("delete", db_delete_cmd, 0, 316 "Delete a breakpoint.", "address | #number",NULL) }, 317 { DDB_ADD_CMD("dmesg", db_dmesg, 0, 318 "Show kernel message buffer.", "[count]",NULL) }, 319 { DDB_ADD_CMD("dwatch", db_deletewatch_cmd, 0, 320 "Delete the watchpoint.", "address",NULL) }, 321 { DDB_ADD_CMD("examine", db_examine_cmd, CS_SET_DOT, 322 "Display the address locations.", 323 "[/modifier] address[,count]",NULL) }, 324 { DDB_ADD_CMD("exit", db_continue_cmd, 0, 325 "Continue execution.", "[/c]",NULL) }, 326 { DDB_ADD_CMD("help", db_help_print_cmd, CS_OWN|CS_NOREPEAT, 327 "Display help about commands", 328 "Use other commands as arguments.",NULL) }, 329 { DDB_ADD_CMD("kill", db_kill_proc, CS_OWN, 330 "Send a signal to the process","pid[,signal_number]", 331 " pid:\t\t\tthe process id (may need 0t prefix for decimal)\n" 332 " signal_number:\tthe signal to send") }, 333 #ifdef KGDB 334 { DDB_ADD_CMD("kgdb", db_kgdb_cmd, 0, NULL,NULL,NULL) }, 335 #endif 336 { DDB_ADD_CMD("machine",NULL,CS_MACH, 337 "Architecture specific functions.",NULL,NULL) }, 338 { DDB_ADD_CMD("match", db_trace_until_matching_cmd,0, 339 "Stop at the matching return instruction.","See help next",NULL) }, 340 { DDB_ADD_CMD("next", db_trace_until_matching_cmd,0, 341 "Stop at the matching return instruction.","[/p]",NULL) }, 342 { DDB_ADD_CMD("p", db_print_cmd, 0, 343 "Print address according to the format.", 344 "[/axzodurc] address [address ...]",NULL) }, 345 { DDB_ADD_CMD("print", db_print_cmd, 0, 346 "Print address according to the format.", 347 "[/axzodurc] address [address ...]",NULL) }, 348 { DDB_ADD_CMD("ps", db_show_all_procs, 0, 349 "Print all processes.","See show all procs",NULL) }, 350 { DDB_ADD_CMD("quit", db_continue_cmd, 0, 351 "Continue execution.", "[/c]",NULL) }, 352 { DDB_ADD_CMD("reboot", db_reboot_cmd, CS_OWN, 353 "Reboot","0x1 RB_ASKNAME, 0x2 RB_SINGLE, 0x4 RB_NOSYNC, 0x8 RB_HALT," 354 "0x40 RB_KDB, 0x100 RB_DUMP, 0x808 RB_POWERDOWN",NULL) }, 355 { DDB_ADD_CMD("s", db_single_step_cmd, 0, 356 "Single-step count times.","[/p] [,count]",NULL) }, 357 { DDB_ADD_CMD("search", db_search_cmd, CS_OWN|CS_SET_DOT, 358 "Search memory from address for value.", 359 "[/bhl] address value [mask] [,count]",NULL) }, 360 { DDB_ADD_CMD("set", db_set_cmd, CS_OWN, 361 "Set the named variable","$variable [=] expression",NULL) }, 362 { DDB_ADD_CMD("show", NULL, CS_SHOW, 363 "Show kernel stats.", NULL,NULL) }, 364 { DDB_ADD_CMD("sifting", db_sifting_cmd, CS_OWN, 365 "Search the symbol tables ","[/F] string",NULL) }, 366 { DDB_ADD_CMD("step", db_single_step_cmd, 0, 367 "Single-step count times.","[/p] [,count]",NULL) }, 368 { DDB_ADD_CMD("sync", db_sync_cmd, CS_OWN, 369 "Force a crash dump, and then reboot.",NULL,NULL) }, 370 { DDB_ADD_CMD("trace", db_stack_trace_cmd, 0, 371 "Stack trace from frame-address.", 372 "[/u[l]] [frame-address][,count]",NULL) }, 373 { DDB_ADD_CMD("until", db_trace_until_call_cmd,0, 374 "Stop at the next call or return instruction.","[/p]",NULL) }, 375 { DDB_ADD_CMD("w", db_write_cmd, CS_MORE|CS_SET_DOT, 376 "Write the expressions at succeeding locations.", 377 "[/bhl] address expression [expression ...]",NULL) }, 378 { DDB_ADD_CMD("watch", db_watchpoint_cmd, CS_MORE, 379 "Set a watchpoint for a region. ","address[,size]",NULL) }, 380 { DDB_ADD_CMD("whatis", db_whatis_cmd, 0, 381 "Describe what an address is", "address", NULL) }, 382 { DDB_ADD_CMD("write", db_write_cmd, CS_MORE|CS_SET_DOT, 383 "Write the expressions at succeeding locations.", 384 "[/bhl] address expression [expression ...]",NULL) }, 385 { DDB_ADD_CMD("x", db_examine_cmd, CS_SET_DOT, 386 "Display the address locations.", 387 "[/modifier] address[,count]",NULL) }, 388 { DDB_ADD_CMD(NULL, NULL, 0, NULL, NULL, NULL) } 389 }; 390 391 static const struct db_command *db_last_command = NULL; 392 #if defined(DDB_COMMANDONENTER) 393 char db_cmd_on_enter[DB_LINE_MAXLEN + 1] = ___STRING(DDB_COMMANDONENTER); 394 #else /* defined(DDB_COMMANDONENTER) */ 395 char db_cmd_on_enter[DB_LINE_MAXLEN + 1] = ""; 396 #endif /* defined(DDB_COMMANDONENTER) */ 397 #define DB_LINE_SEP ';' 398 399 /* 400 * Execute commandlist after ddb start 401 * This function goes through the command list created from commands and ';' 402 */ 403 static void 404 db_execute_commandlist(const char *cmdlist) 405 { 406 const char *cmd = cmdlist; 407 const struct db_command *dummy = NULL; 408 409 while (*cmd != '\0') { 410 const char *ep = cmd; 411 412 while (*ep != '\0' && *ep != DB_LINE_SEP) { 413 ep++; 414 } 415 db_set_line(cmd, ep); 416 db_command(&dummy); 417 cmd = ep; 418 if (*cmd == DB_LINE_SEP) { 419 cmd++; 420 } 421 } 422 } 423 424 /* Initialize ddb command tables */ 425 void 426 db_init_commands(void) 427 { 428 static bool done = false; 429 430 if (done) return; 431 done = true; 432 433 /* register command tables */ 434 (void)db_register_tbl_entry(DDB_BASE_CMD, &db_base_cmd_builtins); 435 #ifdef DB_MACHINE_COMMANDS 436 (void)db_register_tbl_entry(DDB_MACH_CMD, &db_mach_cmd_builtins); 437 #endif 438 (void)db_register_tbl_entry(DDB_SHOW_CMD, &db_show_cmd_builtins); 439 } 440 441 442 /* 443 * Add command table to the specified list 444 * Arg: 445 * int type specifies type of command table DDB_SHOW_CMD|DDB_BASE_CMD|DDB_MAC_CMD 446 * *cmd_tbl poiter to static allocated db_command table 447 * 448 * Command table must be NULL terminated array of struct db_command 449 */ 450 int 451 db_register_tbl(uint8_t type, const struct db_command *cmd_tbl) 452 { 453 struct db_cmd_tbl_en *list_ent; 454 455 /* empty list - ignore */ 456 if (cmd_tbl->name == 0) 457 return 0; 458 459 /* force builtin commands to be registered first */ 460 db_init_commands(); 461 462 /* now create a list entry for this table */ 463 list_ent = db_zalloc(sizeof(*list_ent)); 464 if (list_ent == NULL) 465 return ENOMEM; 466 list_ent->db_cmd=cmd_tbl; 467 468 /* and register it */ 469 return db_register_tbl_entry(type, list_ent); 470 } 471 472 static int 473 db_register_tbl_entry(uint8_t type, struct db_cmd_tbl_en *list_ent) 474 { 475 struct db_cmd_tbl_en_head *list; 476 477 switch(type) { 478 case DDB_BASE_CMD: 479 list = &db_base_cmd_list; 480 break; 481 case DDB_SHOW_CMD: 482 list = &db_show_cmd_list; 483 break; 484 case DDB_MACH_CMD: 485 list = &db_mach_cmd_list; 486 break; 487 default: 488 return ENOENT; 489 } 490 491 TAILQ_INSERT_TAIL(list, list_ent, db_cmd_next); 492 493 return 0; 494 } 495 496 /* 497 * Remove command table specified with db_cmd address == cmd_tbl 498 */ 499 int 500 db_unregister_tbl(uint8_t type,const struct db_command *cmd_tbl) 501 { 502 struct db_cmd_tbl_en *list_ent; 503 struct db_cmd_tbl_en_head *list; 504 505 /* find list on which the entry should live */ 506 switch (type) { 507 case DDB_BASE_CMD: 508 list=&db_base_cmd_list; 509 break; 510 case DDB_SHOW_CMD: 511 list=&db_show_cmd_list; 512 break; 513 case DDB_MACH_CMD: 514 list=&db_mach_cmd_list; 515 break; 516 default: 517 return EINVAL; 518 } 519 520 TAILQ_FOREACH (list_ent, list, db_cmd_next) { 521 if (list_ent->db_cmd == cmd_tbl){ 522 TAILQ_REMOVE(list, 523 list_ent, db_cmd_next); 524 db_free(list_ent, sizeof(*list_ent)); 525 return 0; 526 } 527 } 528 return ENOENT; 529 } 530 531 /* This function is called from machine trap code. */ 532 void 533 db_command_loop(void) 534 { 535 label_t db_jmpbuf; 536 label_t *savejmp; 537 538 /* 539 * Initialize 'prev' and 'next' to dot. 540 */ 541 db_prev = db_dot; 542 db_next = db_dot; 543 544 db_cmd_loop_done = false; 545 546 /* Init default command tables add machine, base, 547 show command tables to the list */ 548 db_init_commands(); 549 550 /* save context for return from ddb */ 551 savejmp = db_recover; 552 db_recover = &db_jmpbuf; 553 (void) setjmp(&db_jmpbuf); 554 555 /* Execute default ddb start commands */ 556 db_execute_commandlist(db_cmd_on_enter); 557 558 (void) setjmp(&db_jmpbuf); 559 while (!db_cmd_loop_done) { 560 if (db_print_position() != 0) 561 db_printf("\n"); 562 db_output_line = 0; 563 (void) db_read_line(); 564 db_command(&db_last_command); 565 } 566 567 db_recover = savejmp; 568 } 569 570 /* 571 * Search command table for command prefix 572 */ 573 static int 574 db_cmd_search_table(const char *name, 575 const struct db_command *table, 576 const struct db_command **cmdp) 577 { 578 579 const struct db_command *cmd; 580 int result; 581 582 result = CMD_NONE; 583 *cmdp = NULL; 584 585 for (cmd = table; cmd->name != 0; cmd++) { 586 const char *lp; 587 const char *rp; 588 589 lp = name; 590 rp = cmd->name; 591 while (*lp != '\0' && *lp == *rp) { 592 rp++; 593 lp++; 594 } 595 596 if (*lp != '\0') /* mismatch or extra chars in name */ 597 continue; 598 599 if (*rp == '\0') { /* exact match */ 600 *cmdp = cmd; 601 return (CMD_EXACT); 602 } 603 604 /* prefix match: end of name, not end of command */ 605 if (result == CMD_NONE) { 606 result = CMD_PREFIX; 607 *cmdp = cmd; 608 } 609 else if (result == CMD_PREFIX) { 610 result = CMD_AMBIGUOUS; 611 *cmdp = NULL; 612 } 613 } 614 615 return (result); 616 } 617 618 619 /* 620 * Search list of command tables for command 621 */ 622 static int 623 db_cmd_search(const char *name, 624 struct db_cmd_tbl_en_head *list_head, 625 const struct db_command **cmdp) 626 { 627 struct db_cmd_tbl_en *list_ent; 628 const struct db_command *found_command; 629 bool accept_prefix_match; 630 int result; 631 632 result = CMD_NONE; 633 found_command = NULL; 634 accept_prefix_match = true; 635 636 TAILQ_FOREACH(list_ent, list_head, db_cmd_next) { 637 const struct db_command *cmd; 638 int found; 639 640 found = db_cmd_search_table(name, list_ent->db_cmd, &cmd); 641 if (found == CMD_EXACT) { 642 result = CMD_EXACT; 643 found_command = cmd; 644 break; 645 } 646 647 if (found == CMD_PREFIX) { 648 if (accept_prefix_match) { 649 /* 650 * Continue search, but note current result 651 * in case we won't find anything else. 652 */ 653 accept_prefix_match = false; 654 result = CMD_PREFIX; 655 found_command = cmd; 656 } else { 657 /* 658 * Watch out for globally ambiguous 659 * prefix match that is not locally 660 * ambiguous - with one match in one 661 * table and another match(es) in 662 * another table. 663 */ 664 result = CMD_AMBIGUOUS; 665 found_command = NULL; 666 } 667 } 668 else if (found == CMD_AMBIGUOUS) { 669 accept_prefix_match = false; 670 result = CMD_AMBIGUOUS; 671 found_command = NULL; 672 } 673 } 674 675 *cmdp = found_command; 676 return result; 677 } 678 679 static void 680 db_cmd_search_failed(char *name, int search_result) 681 { 682 if (search_result == CMD_NONE) 683 db_printf("No such command: %s\n", name); 684 else 685 db_printf("Ambiguous command: %s\n", name); 686 } 687 688 689 /* 690 * List commands to the console. 691 */ 692 static void 693 db_cmd_list(const struct db_cmd_tbl_en_head *list) 694 { 695 696 struct db_cmd_tbl_en *list_ent; 697 const struct db_command *table; 698 size_t i, j, w, columns, lines, numcmds, width=0; 699 const char *p; 700 701 TAILQ_FOREACH(list_ent,list,db_cmd_next) { 702 table = list_ent->db_cmd; 703 for (i = 0; table[i].name != NULL; i++) { 704 w = strlen(table[i].name); 705 if (w > width) 706 width = w; 707 } 708 } 709 710 width = DB_NEXT_TAB(width); 711 712 columns = db_max_width / width; 713 if (columns == 0) 714 columns = 1; 715 716 TAILQ_FOREACH(list_ent,list,db_cmd_next) { 717 table = list_ent->db_cmd; 718 719 for (numcmds = 0; table[numcmds].name != NULL; numcmds++) 720 ; 721 lines = (numcmds + columns - 1) / columns; 722 723 for (i = 0; i < lines; i++) { 724 for (j = 0; j < columns; j++) { 725 p = table[j * lines + i].name; 726 if (p) 727 db_printf("%s", p); 728 if (j * lines + i + lines >= numcmds) { 729 db_putchar('\n'); 730 break; 731 } 732 if (p) { 733 w = strlen(p); 734 while (w < width) { 735 w = DB_NEXT_TAB(w); 736 db_putchar('\t'); 737 } 738 } 739 } 740 } 741 } 742 return; 743 } 744 745 /* 746 * Read complete command with all subcommands, starting with current 747 * db_tok_string. If subcommand is missing, print the list of all 748 * subcommands. If command/subcommand is not found, print an error 749 * message. Returns pointer to "leaf" command or NULL. 750 */ 751 static const struct db_command * 752 db_read_command(void) 753 { 754 const struct db_command *command; 755 struct db_cmd_tbl_en_head *list; 756 int found; 757 int t; 758 759 list = &db_base_cmd_list; 760 do { 761 found = db_cmd_search(db_tok_string, list, &command); 762 if (command == NULL) { 763 db_cmd_search_failed(db_tok_string, found); 764 db_flush_lex(); 765 return NULL; 766 } 767 768 if (command->flag == CS_SHOW) 769 list = &db_show_cmd_list; 770 else if (command->flag == CS_MACH) 771 list = &db_mach_cmd_list; 772 else if (command->flag == CS_COMPAT) 773 /* same list */; 774 else 775 break; /* expect no more subcommands */ 776 777 t = db_read_token(); /* read subcommand */ 778 if (t != tIDENT) { 779 /* if none given - just print all of them */ 780 db_cmd_list(list); 781 db_flush_lex(); 782 return NULL; 783 } 784 } while (list != NULL); 785 786 return command; 787 } 788 789 /* 790 * Parse command line and execute apropriate function. 791 */ 792 static void 793 db_command(const struct db_command **last_cmdp) 794 { 795 const struct db_command *command; 796 static db_expr_t last_count = 0; 797 db_expr_t addr, count; 798 char modif[TOK_STRING_SIZE]; 799 800 int t; 801 bool have_addr = false; 802 803 command = NULL; 804 805 t = db_read_token(); 806 if ((t == tEOL) || (t == tCOMMA)) { 807 /* 808 * An empty line repeats last command, at 'next'. 809 * Only a count repeats the last command with the new count. 810 */ 811 command = *last_cmdp; 812 813 if (!command) 814 return; 815 816 addr = (db_expr_t)db_next; 817 if (t == tCOMMA) { 818 if (!db_expression(&count)) { 819 db_printf("Count missing\n"); 820 db_flush_lex(); 821 return; 822 } 823 } else 824 count = last_count; 825 have_addr = false; 826 modif[0] = '\0'; 827 db_skip_to_eol(); 828 829 } else if (t == tEXCL) { 830 db_fncall(0, 0, 0, NULL); 831 return; 832 833 } else if (t != tIDENT) { 834 db_printf("?\n"); 835 db_flush_lex(); 836 return; 837 838 } else { 839 840 command = db_read_command(); 841 if (command == NULL) 842 return; 843 844 if ((command->flag & CS_OWN) == 0) { 845 846 /* 847 * Standard syntax: 848 * command [/modifier] [addr] [,count] 849 */ 850 t = db_read_token(); /* get modifier */ 851 if (t == tSLASH) { 852 t = db_read_token(); 853 if (t != tIDENT) { 854 db_printf("Bad modifier\n"); 855 db_flush_lex(); 856 return; 857 } 858 /* save modifier */ 859 strlcpy(modif, db_tok_string, sizeof(modif)); 860 861 } else { 862 db_unread_token(t); 863 modif[0] = '\0'; 864 } 865 866 if (db_expression(&addr)) { /*get address*/ 867 db_dot = (db_addr_t) addr; 868 db_last_addr = db_dot; 869 have_addr = true; 870 } else { 871 addr = (db_expr_t) db_dot; 872 have_addr = false; 873 } 874 875 t = db_read_token(); 876 if (t == tCOMMA) { /*Get count*/ 877 if (!db_expression(&count)) { 878 db_printf("Count missing\n"); 879 db_flush_lex(); 880 return; 881 } 882 } else { 883 db_unread_token(t); 884 count = -1; 885 } 886 if ((command->flag & CS_MORE) == 0) { 887 db_skip_to_eol(); 888 } 889 } 890 } 891 892 if (command != NULL && command->flag & CS_NOREPEAT) { 893 *last_cmdp = NULL; 894 last_count = 0; 895 } else { 896 *last_cmdp = command; 897 last_count = count; 898 } 899 900 901 if (command != NULL) { 902 /* 903 * Execute the command. 904 */ 905 if (command->fcn != NULL) 906 (*command->fcn)(addr, have_addr, count, modif); 907 908 if (command->flag & CS_SET_DOT) { 909 /* 910 * If command changes dot, set dot to 911 * previous address displayed (if 'ed' style). 912 */ 913 if (db_ed_style) 914 db_dot = db_prev; 915 else 916 db_dot = db_next; 917 } else { 918 /* 919 * If command does not change dot, 920 * set 'next' location to be the same. 921 */ 922 db_next = db_dot; 923 } 924 } 925 } 926 927 /* 928 * Print help for commands 929 */ 930 static void 931 db_help_print_cmd(db_expr_t addr, bool have_addr, db_expr_t count, 932 const char *modif) 933 { 934 const struct db_command *command; 935 int t; 936 937 t = db_read_token(); 938 939 /* is there another command after the "help"? */ 940 if (t != tIDENT) { 941 /* print base commands */ 942 db_cmd_list(&db_base_cmd_list); 943 return; 944 } 945 946 command = db_read_command(); 947 if (command == NULL) 948 return; 949 950 #ifdef DDB_VERBOSE_HELP 951 db_printf("Command: %s\n", command->name); 952 if (command->cmd_descr != NULL) 953 db_printf(" Description: %s\n", command->cmd_descr); 954 if (command->cmd_arg != NULL) 955 db_printf(" Arguments: %s\n", command->cmd_arg); 956 if (command->cmd_arg_help != NULL) 957 db_printf(" Arguments description:\n%s\n", 958 command->cmd_arg_help); 959 if ((command->cmd_arg == NULL) && (command->cmd_descr == NULL)) 960 db_printf(" No help message.\n"); 961 #endif 962 963 db_skip_to_eol(); 964 } 965 966 /*ARGSUSED*/ 967 static void 968 db_map_print_cmd(db_expr_t addr, bool have_addr, db_expr_t count, 969 const char *modif) 970 { 971 bool full = false; 972 973 if (modif[0] == 'f') 974 full = true; 975 976 if (have_addr == false) 977 addr = (db_expr_t)(uintptr_t)db_read_ptr("kernel_map"); 978 979 #ifdef _KERNEL 980 uvm_map_printit((struct vm_map *)(uintptr_t) addr, full, db_printf); 981 #endif /* XXX CRASH(8) */ 982 } 983 984 /*ARGSUSED*/ 985 static void 986 db_malloc_print_cmd(db_expr_t addr, bool have_addr, 987 db_expr_t count, const char *modif) 988 { 989 990 #ifdef MALLOC_DEBUG 991 if (!have_addr) 992 addr = 0; 993 994 debug_malloc_printit(db_printf, (vaddr_t) addr); 995 #else 996 db_printf("The kernel is not built with the MALLOC_DEBUG option.\n"); 997 #endif /* MALLOC_DEBUG */ 998 } 999 1000 /*ARGSUSED*/ 1001 static void 1002 db_object_print_cmd(db_expr_t addr, bool have_addr, 1003 db_expr_t count, const char *modif) 1004 { 1005 bool full = false; 1006 1007 if (modif[0] == 'f') 1008 full = true; 1009 1010 #ifdef _KERNEL /* XXX CRASH(8) */ 1011 uvm_object_printit((struct uvm_object *)(uintptr_t) addr, full, 1012 db_printf); 1013 #endif 1014 } 1015 1016 /*ARGSUSED*/ 1017 static void 1018 db_page_print_cmd(db_expr_t addr, bool have_addr, 1019 db_expr_t count, const char *modif) 1020 { 1021 bool full = false; 1022 1023 if (modif[0] == 'f') 1024 full = true; 1025 1026 #ifdef _KERNEL /* XXX CRASH(8) */ 1027 uvm_page_printit((struct vm_page *)(uintptr_t) addr, full, db_printf); 1028 #endif 1029 } 1030 1031 /*ARGSUSED*/ 1032 static void 1033 db_show_all_pages(db_expr_t addr, bool have_addr, 1034 db_expr_t count, const char *modif) 1035 { 1036 1037 #ifdef _KERNEL /* XXX CRASH(8) */ 1038 uvm_page_printall(db_printf); 1039 #endif 1040 } 1041 1042 /*ARGSUSED*/ 1043 static void 1044 db_buf_print_cmd(db_expr_t addr, bool have_addr, 1045 db_expr_t count, const char *modif) 1046 { 1047 bool full = false; 1048 1049 if (modif[0] == 'f') 1050 full = true; 1051 1052 #ifdef _KERNEL /* XXX CRASH(8) */ 1053 vfs_buf_print((struct buf *)(uintptr_t) addr, full, db_printf); 1054 #endif 1055 } 1056 1057 /*ARGSUSED*/ 1058 static void 1059 db_event_print_cmd(db_expr_t addr, bool have_addr, 1060 db_expr_t count, const char *modif) 1061 { 1062 bool full = false; 1063 struct evcnt ev, *evp; 1064 char buf[80]; 1065 1066 if (modif[0] == 'f') 1067 full = true; 1068 1069 evp = (struct evcnt *)db_read_ptr("allevents"); 1070 while (evp != NULL) { 1071 db_read_bytes((db_addr_t)evp, sizeof(ev), (char *)&ev); 1072 evp = ev.ev_list.tqe_next; 1073 if (ev.ev_count == 0 && !full) 1074 continue; 1075 db_read_bytes((db_addr_t)ev.ev_group, ev.ev_grouplen + 1, buf); 1076 db_printf("evcnt type %d: %s ", ev.ev_type, buf); 1077 db_read_bytes((db_addr_t)ev.ev_name, ev.ev_namelen + 1, buf); 1078 db_printf("%s = %lld\n", buf, (long long)ev.ev_count); 1079 } 1080 } 1081 1082 /*ARGSUSED*/ 1083 static void 1084 db_vnode_print_cmd(db_expr_t addr, bool have_addr, 1085 db_expr_t count, const char *modif) 1086 { 1087 bool full = false; 1088 1089 if (modif[0] == 'f') 1090 full = true; 1091 1092 #ifdef _KERNEL /* XXX CRASH(8) */ 1093 vfs_vnode_print((struct vnode *)(uintptr_t) addr, full, db_printf); 1094 #endif 1095 } 1096 1097 /*ARGSUSED*/ 1098 static void 1099 db_vmem_print_cmd(db_expr_t addr, bool have_addr, 1100 db_expr_t count, const char *modif) 1101 { 1102 1103 #ifdef _KERNEL /* XXX CRASH(8) */ 1104 vmem_print((uintptr_t) addr, modif, db_printf); 1105 #endif 1106 } 1107 1108 static void 1109 db_mount_print_cmd(db_expr_t addr, bool have_addr, 1110 db_expr_t count, const char *modif) 1111 { 1112 bool full = false; 1113 1114 if (modif[0] == 'f') 1115 full = true; 1116 1117 #ifdef _KERNEL /* XXX CRASH(8) */ 1118 vfs_mount_print((struct mount *)(uintptr_t) addr, full, db_printf); 1119 #endif 1120 } 1121 1122 /*ARGSUSED*/ 1123 static void 1124 db_mbuf_print_cmd(db_expr_t addr, bool have_addr, 1125 db_expr_t count, const char *modif) 1126 { 1127 1128 #ifdef _KERNEL /* XXX CRASH(8) */ 1129 m_print((const struct mbuf *)(uintptr_t) addr, modif, db_printf); 1130 #endif 1131 } 1132 1133 /*ARGSUSED*/ 1134 static void 1135 db_pool_print_cmd(db_expr_t addr, bool have_addr, 1136 db_expr_t count, const char *modif) 1137 { 1138 1139 #ifdef _KERNEL /* XXX CRASH(8) */ 1140 pool_printit((struct pool *)(uintptr_t) addr, modif, db_printf); 1141 #endif 1142 } 1143 1144 /*ARGSUSED*/ 1145 static void 1146 db_namecache_print_cmd(db_expr_t addr, bool have_addr, 1147 db_expr_t count, const char *modif) 1148 { 1149 1150 #ifdef _KERNEL /* XXX CRASH(8) */ 1151 namecache_print((struct vnode *)(uintptr_t) addr, db_printf); 1152 #endif 1153 } 1154 1155 /*ARGSUSED*/ 1156 static void 1157 db_uvmexp_print_cmd(db_expr_t addr, bool have_addr, 1158 db_expr_t count, const char *modif) 1159 { 1160 1161 #ifdef _KERNEL /* XXX CRASH(8) */ 1162 uvmexp_print(db_printf); 1163 #endif 1164 } 1165 1166 #ifdef UVMHIST 1167 /*ARGSUSED*/ 1168 static void 1169 db_uvmhist_print_cmd(db_expr_t addr, bool have_addr, 1170 db_expr_t count, const char *modif) 1171 { 1172 1173 uvmhist_print(db_printf); 1174 } 1175 #endif 1176 1177 /*ARGSUSED*/ 1178 static void 1179 db_lock_print_cmd(db_expr_t addr, bool have_addr, 1180 db_expr_t count, const char *modif) 1181 { 1182 1183 #ifdef _KERNEL /* XXX CRASH(8) */ 1184 lockdebug_lock_print((void *)(uintptr_t)addr, db_printf); 1185 #endif 1186 } 1187 1188 /* 1189 * Call random function: 1190 * !expr(arg,arg,arg) 1191 */ 1192 /*ARGSUSED*/ 1193 static void 1194 db_fncall(db_expr_t addr, bool have_addr, 1195 db_expr_t count, const char *modif) 1196 { 1197 #ifdef _KERNEL 1198 db_expr_t fn_addr; 1199 #define MAXARGS 11 1200 db_expr_t args[MAXARGS]; 1201 int nargs = 0; 1202 db_expr_t retval; 1203 db_expr_t (*func)(db_expr_t, ...); 1204 int t; 1205 1206 if (!db_expression(&fn_addr)) { 1207 db_printf("Bad function\n"); 1208 db_flush_lex(); 1209 return; 1210 } 1211 func = (db_expr_t (*)(db_expr_t, ...))(uintptr_t) fn_addr; 1212 1213 t = db_read_token(); 1214 if (t == tLPAREN) { 1215 if (db_expression(&args[0])) { 1216 nargs++; 1217 while ((t = db_read_token()) == tCOMMA) { 1218 if (nargs == MAXARGS) { 1219 db_printf("Too many arguments\n"); 1220 db_flush_lex(); 1221 return; 1222 } 1223 if (!db_expression(&args[nargs])) { 1224 db_printf("Argument missing\n"); 1225 db_flush_lex(); 1226 return; 1227 } 1228 nargs++; 1229 } 1230 db_unread_token(t); 1231 } 1232 if (db_read_token() != tRPAREN) { 1233 db_printf("?\n"); 1234 db_flush_lex(); 1235 return; 1236 } 1237 } 1238 db_skip_to_eol(); 1239 1240 while (nargs < MAXARGS) { 1241 args[nargs++] = 0; 1242 } 1243 1244 retval = (*func)(args[0], args[1], args[2], args[3], args[4], 1245 args[5], args[6], args[7], args[8], args[9]); 1246 db_printf("%s\n", db_num_to_str(retval)); 1247 #else /* _KERNEL */ 1248 db_printf("This command can only be used in-kernel.\n"); 1249 #endif /* _KERNEL */ 1250 } 1251 1252 static void 1253 db_reboot_cmd(db_expr_t addr, bool have_addr, 1254 db_expr_t count, const char *modif) 1255 { 1256 #ifdef _KERNEL 1257 db_expr_t bootflags; 1258 1259 /* Flags, default to RB_AUTOBOOT */ 1260 if (!db_expression(&bootflags)) 1261 bootflags = (db_expr_t)RB_AUTOBOOT; 1262 if (db_read_token() != tEOL) { 1263 db_error("?\n"); 1264 /*NOTREACHED*/ 1265 } 1266 /* 1267 * We are leaving DDB, never to return upward. 1268 * Clear db_recover so that we can debug faults in functions 1269 * called from cpu_reboot. 1270 */ 1271 db_recover = 0; 1272 cpu_reboot((int)bootflags, NULL); 1273 #else /* _KERNEL */ 1274 db_printf("This command can only be used in-kernel.\n"); 1275 #endif /* _KERNEL */ 1276 } 1277 1278 static void 1279 db_sifting_cmd(db_expr_t addr, bool have_addr, 1280 db_expr_t count, const char *modif) 1281 { 1282 int mode, t; 1283 1284 t = db_read_token(); 1285 if (t == tSLASH) { 1286 t = db_read_token(); 1287 if (t != tIDENT) { 1288 bad_modifier: 1289 db_printf("Bad modifier\n"); 1290 db_flush_lex(); 1291 return; 1292 } 1293 if (!strcmp(db_tok_string, "F")) 1294 mode = 'F'; 1295 else 1296 goto bad_modifier; 1297 t = db_read_token(); 1298 } else 1299 mode = 0; 1300 1301 if (t == tIDENT) 1302 db_sifting(db_tok_string, mode); 1303 else { 1304 db_printf("Bad argument (non-string)\n"); 1305 db_flush_lex(); 1306 } 1307 } 1308 1309 static void 1310 db_stack_trace_cmd(db_expr_t addr, bool have_addr, db_expr_t count, const char *modif) 1311 { 1312 register const char *cp = modif; 1313 register char c; 1314 void (*pr)(const char *, ...); 1315 1316 pr = db_printf; 1317 while ((c = *cp++) != 0) 1318 if (c == 'l') 1319 pr = (void (*)(const char *, ...))printf; 1320 1321 if (count == -1) 1322 count = 65535; 1323 1324 db_stack_trace_print(addr, have_addr, count, modif, pr); 1325 } 1326 1327 static void 1328 db_sync_cmd(db_expr_t addr, bool have_addr, 1329 db_expr_t count, const char *modif) 1330 { 1331 #ifdef _KERNEL 1332 /* 1333 * We are leaving DDB, never to return upward. 1334 * Clear db_recover so that we can debug faults in functions 1335 * called from cpu_reboot. 1336 */ 1337 db_recover = 0; 1338 panicstr = "dump forced via kernel debugger"; 1339 cpu_reboot(RB_DUMP, NULL); 1340 #else /* _KERNEL */ 1341 db_printf("This command can only be used in-kernel.\n"); 1342 #endif /* _KERNEL */ 1343 } 1344 1345 /* 1346 * Describe what an address is 1347 */ 1348 void 1349 db_whatis_cmd(db_expr_t address, bool have_addr, 1350 db_expr_t count, const char *modif) 1351 { 1352 const uintptr_t addr = (uintptr_t)address; 1353 1354 db_lwp_whatis(addr, db_printf); 1355 #ifdef _KERNEL /* XXX CRASH(8) */ 1356 pool_whatis(addr, db_printf); 1357 vmem_whatis(addr, db_printf); 1358 uvm_whatis(addr, db_printf); 1359 module_whatis(addr, db_printf); 1360 #endif 1361 } 1362
Indexes created Mon Sep 22 05:09:51 GMT 2025