db_command.c revision 1.123
1 /* $NetBSD: db_command.c,v 1.123 2008/11/25 15:14:07 ad Exp $ */ 2 /* 3 * Mach Operating System 4 * Copyright (c) 1991,1990 Carnegie Mellon University 5 * All Rights Reserved. 6 * 7 * Permission to use, copy, modify and distribute this software and its 8 * documentation is hereby granted, provided that both the copyright 9 * notice and this permission notice appear in all copies of the 10 * software, derivative works or modified versions, and any portions 11 * thereof, and that both notices appear in supporting documentation. 12 * 13 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 14 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 15 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 16 * 17 * Carnegie Mellon requests users of this software to return to 18 * 19 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 20 * School of Computer Science 21 * Carnegie Mellon University 22 * Pittsburgh PA 15213-3890 23 * 24 * any improvements or extensions that they make and grant Carnegie the 25 * rights to redistribute these changes. 26 */ 27 /* 28 * Copyright (c) 1996, 1997, 1998, 1999, 2002 The NetBSD Foundation, Inc. 29 * All rights reserved. 30 * 31 * This code is derived from software contributed to The NetBSD Foundation 32 * by Adam Hamsik. 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 44 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 45 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 46 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 47 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 48 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 49 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 50 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 51 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 52 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 53 * POSSIBILITY OF SUCH DAMAGE. 54 */ 55 56 /* 57 * Command dispatcher. 58 */ 59 60 #include <sys/cdefs.h> 61 __KERNEL_RCSID(0, "$NetBSD: db_command.c,v 1.123 2008/11/25 15:14:07 ad Exp $"); 62 63 #include "opt_aio.h" 64 #include "opt_ddb.h" 65 #include "opt_kgdb.h" 66 #include "opt_inet.h" 67 #include "opt_uvmhist.h" 68 #include "opt_ddbparam.h" 69 70 #include <sys/param.h> 71 #include <sys/systm.h> 72 #include <sys/reboot.h> 73 #include <sys/device.h> 74 #include <sys/lwp.h> 75 #include <sys/malloc.h> 76 #include <sys/mbuf.h> 77 #include <sys/namei.h> 78 #include <sys/pool.h> 79 #include <sys/proc.h> 80 #include <sys/vnode.h> 81 #include <sys/vmem.h> 82 #include <sys/lockdebug.h> 83 #include <sys/sleepq.h> 84 #include <sys/cpu.h> 85 #include <sys/buf.h> 86 #include <sys/module.h> 87 88 /*include queue macros*/ 89 #include <sys/queue.h> 90 91 #include <machine/db_machdep.h> /* type definitions */ 92 93 #if defined(_KERNEL_OPT) 94 #include "opt_multiprocessor.h" 95 #endif 96 97 #include <ddb/db_lex.h> 98 #include <ddb/db_output.h> 99 #include <ddb/db_command.h> 100 #include <ddb/db_break.h> 101 #include <ddb/db_watch.h> 102 #include <ddb/db_run.h> 103 #include <ddb/db_variables.h> 104 #include <ddb/db_interface.h> 105 #include <ddb/db_sym.h> 106 #include <ddb/db_extern.h> 107 108 #include <uvm/uvm_extern.h> 109 #include <uvm/uvm_ddb.h> 110 111 #include "arp.h" 112 113 /* 114 * Results of command search. 115 */ 116 #define CMD_UNIQUE 0 117 #define CMD_FOUND 1 118 #define CMD_NONE 2 119 #define CMD_AMBIGUOUS 3 120 121 /* 122 * Exported global variables 123 */ 124 bool db_cmd_loop_done; 125 label_t *db_recover; 126 db_addr_t db_dot; 127 db_addr_t db_last_addr; 128 db_addr_t db_prev; 129 db_addr_t db_next; 130 131 132 /* 133 New DDB api for adding and removing commands uses three lists, because 134 we use two types of commands 135 a) standard commands without subcommands -> reboot 136 b) show commands which are subcommands of show command -> show aio_jobs 137 c) if defined machine specific commands 138 139 ddb_add_cmd, ddb_rem_cmd use type (DDB_SHOW_CMD||DDB_BASE_CMD)argument to 140 add them to representativ lists. 141 */ 142 143 static const struct db_command db_command_table[]; 144 static const struct db_command db_show_cmds[]; 145 #ifdef DB_MACHINE_COMMANDS 146 static const struct db_command db_machine_command_table[]; 147 #endif 148 149 /* the global queue of all command tables */ 150 TAILQ_HEAD(db_cmd_tbl_en_head, db_cmd_tbl_en); 151 152 /* TAILQ entry used to register command tables */ 153 struct db_cmd_tbl_en { 154 const struct db_command *db_cmd; /* cmd table */ 155 TAILQ_ENTRY(db_cmd_tbl_en) db_cmd_next; 156 }; 157 158 /* head of base commands list */ 159 static struct db_cmd_tbl_en_head db_base_cmd_list = 160 TAILQ_HEAD_INITIALIZER(db_base_cmd_list); 161 static struct db_cmd_tbl_en db_base_cmd_builtins = 162 { .db_cmd = db_command_table }; 163 164 /* head of show commands list */ 165 static struct db_cmd_tbl_en_head db_show_cmd_list = 166 TAILQ_HEAD_INITIALIZER(db_show_cmd_list); 167 static struct db_cmd_tbl_en db_show_cmd_builtins = 168 { .db_cmd = db_show_cmds }; 169 170 /* head of machine commands list */ 171 static struct db_cmd_tbl_en_head db_mach_cmd_list = 172 TAILQ_HEAD_INITIALIZER(db_mach_cmd_list); 173 #ifdef DB_MACHINE_COMMANDS 174 static struct db_cmd_tbl_en db_mach_cmd_builtins = 175 { .db_cmd = db_machine_command_table }; 176 #endif 177 178 /* 179 * if 'ed' style: 'dot' is set at start of last item printed, 180 * and '+' points to next line. 181 * Otherwise: 'dot' points to next item, '..' points to last. 182 */ 183 static bool db_ed_style = true; 184 185 static void db_init_commands(void); 186 static int db_register_tbl_entry(uint8_t type, 187 struct db_cmd_tbl_en *list_ent); 188 static void db_cmd_list(const struct db_cmd_tbl_en_head *); 189 static int db_cmd_search(const char *, const struct db_command *, 190 const struct db_command **); 191 static void db_command(const struct db_command **); 192 static void db_buf_print_cmd(db_expr_t, bool, db_expr_t, const char *); 193 static void db_event_print_cmd(db_expr_t, bool, db_expr_t, const char *); 194 static void db_fncall(db_expr_t, bool, db_expr_t, const char *); 195 static int db_get_list_type(const char *); 196 static void db_help_print_cmd(db_expr_t, bool, db_expr_t, const char *); 197 static void db_lock_print_cmd(db_expr_t, bool, db_expr_t, const char *); 198 static void db_mount_print_cmd(db_expr_t, bool, db_expr_t, const char *); 199 static void db_mbuf_print_cmd(db_expr_t, bool, db_expr_t, const char *); 200 static void db_malloc_print_cmd(db_expr_t, bool, db_expr_t, const char *); 201 static void db_map_print_cmd(db_expr_t, bool, db_expr_t, const char *); 202 static void db_namecache_print_cmd(db_expr_t, bool, db_expr_t, 203 const char *); 204 static void db_object_print_cmd(db_expr_t, bool, db_expr_t, const char *); 205 static void db_page_print_cmd(db_expr_t, bool, db_expr_t, const char *); 206 static void db_show_all_pages(db_expr_t, bool, db_expr_t, const char *); 207 static void db_pool_print_cmd(db_expr_t, bool, db_expr_t, const char *); 208 static void db_reboot_cmd(db_expr_t, bool, db_expr_t, const char *); 209 static void db_sifting_cmd(db_expr_t, bool, db_expr_t, const char *); 210 static void db_stack_trace_cmd(db_expr_t, bool, db_expr_t, const char *); 211 static void db_sync_cmd(db_expr_t, bool, db_expr_t, const char *); 212 static void db_whatis_cmd(db_expr_t, bool, db_expr_t, const char *); 213 static void db_uvmexp_print_cmd(db_expr_t, bool, db_expr_t, const char *); 214 #ifdef UVMHIST 215 static void db_uvmhist_print_cmd(db_expr_t, bool, db_expr_t, const char *); 216 #endif 217 static void db_vnode_print_cmd(db_expr_t, bool, db_expr_t, const char *); 218 219 static const struct db_command db_show_cmds[] = { 220 /*added from all sub cmds*/ 221 { DDB_ADD_CMD("callout", db_show_callout, 222 0 ,"List all used callout functions.",NULL,NULL) }, 223 { DDB_ADD_CMD("pages", db_show_all_pages, 224 0 ,"List all used memory pages.",NULL,NULL) }, 225 { DDB_ADD_CMD("procs", db_show_all_procs, 226 0 ,"List all processes.",NULL,NULL) }, 227 { DDB_ADD_CMD("pools", db_show_all_pools, 228 0 ,"Show all poolS",NULL,NULL) }, 229 #ifdef AIO 230 /*added from all sub cmds*/ 231 { DDB_ADD_CMD("aio_jobs", db_show_aio_jobs, 0, 232 "Show aio jobs",NULL,NULL) }, 233 #endif 234 { DDB_ADD_CMD("all", NULL, 235 CS_COMPAT, NULL,NULL,NULL) }, 236 #if defined(INET) && (NARP > 0) 237 { DDB_ADD_CMD("arptab", db_show_arptab, 0,NULL,NULL,NULL) }, 238 #endif 239 { DDB_ADD_CMD("breaks", db_listbreak_cmd, 0, 240 "Display all breaks.",NULL,NULL) }, 241 { DDB_ADD_CMD("buf", db_buf_print_cmd, 0, 242 "Print the struct buf at address.", "[/f] address",NULL) }, 243 { DDB_ADD_CMD("event", db_event_print_cmd, 0, 244 "Print all the non-zero evcnt(9) event counters.", "[/f]",NULL) }, 245 { DDB_ADD_CMD("files", db_show_files_cmd, 0, 246 "Print the files open by process at address", 247 "[/f] address", NULL) }, 248 { DDB_ADD_CMD("lock", db_lock_print_cmd, 0,NULL,NULL,NULL) }, 249 { DDB_ADD_CMD("malloc", db_malloc_print_cmd,0,NULL,NULL,NULL) }, 250 { DDB_ADD_CMD("map", db_map_print_cmd, 0, 251 "Print the vm_map at address.", "[/f] address",NULL) }, 252 { DDB_ADD_CMD("module", db_show_module_cmd, 0, 253 "Print kernel modules", NULL, NULL) }, 254 { DDB_ADD_CMD("mount", db_mount_print_cmd, 0, 255 "Print the mount structure at address.", "[/f] address",NULL) }, 256 { DDB_ADD_CMD("mqueue", db_show_mqueue_cmd, 0, 257 "Print the message queues", NULL, NULL) }, 258 { DDB_ADD_CMD("mbuf", db_mbuf_print_cmd, 0,NULL,NULL, 259 "-c prints all mbuf chains") }, 260 { DDB_ADD_CMD("ncache", db_namecache_print_cmd, 0, 261 "Dump the namecache list.", "address",NULL) }, 262 { DDB_ADD_CMD("object", db_object_print_cmd, 0, 263 "Print the vm_object at address.", "[/f] address",NULL) }, 264 { DDB_ADD_CMD("page", db_page_print_cmd, 0, 265 "Print the vm_page at address.", "[/f] address",NULL) }, 266 { DDB_ADD_CMD("pool", db_pool_print_cmd, 0, 267 "Print the pool at address.", "[/clp] address",NULL) }, 268 { DDB_ADD_CMD("registers", db_show_regs, 0, 269 "Display the register set.", "[/u]",NULL) }, 270 { DDB_ADD_CMD("sched_qs", db_show_sched_qs, 0, 271 "Print the state of the scheduler's run queues.", 272 NULL,NULL) }, 273 { DDB_ADD_CMD("uvmexp", db_uvmexp_print_cmd, 0, 274 "Print a selection of UVM counters and statistics.", 275 NULL,NULL) }, 276 #ifdef UVMHIST 277 { DDB_ADD_CMD("uvmhist", db_uvmhist_print_cmd, 0, 278 "Print the UVM history logs.", 279 NULL,NULL) }, 280 #endif 281 { DDB_ADD_CMD("vnode", db_vnode_print_cmd, 0, 282 "Print the vnode at address.", "[/f] address",NULL) }, 283 { DDB_ADD_CMD("watches", db_listwatch_cmd, 0, 284 "Display all watchpoints.", NULL,NULL) }, 285 { DDB_ADD_CMD(NULL, NULL, 0,NULL,NULL,NULL) } 286 }; 287 288 /* arch/<arch>/<arch>/db_interface.c */ 289 #ifdef DB_MACHINE_COMMANDS 290 extern const struct db_command db_machine_command_table[]; 291 #endif 292 293 static const struct db_command db_command_table[] = { 294 { DDB_ADD_CMD("b", db_breakpoint_cmd, 0, 295 "Set a breakpoint at address", "[/u] address[,count].",NULL) }, 296 { DDB_ADD_CMD("break", db_breakpoint_cmd, 0, 297 "Set a breakpoint at address", "[/u] address[,count].",NULL) }, 298 { DDB_ADD_CMD("bt", db_stack_trace_cmd, 0, 299 "Show backtrace.", "See help trace.",NULL) }, 300 { DDB_ADD_CMD("c", db_continue_cmd, 0, 301 "Continue execution.", "[/c]",NULL) }, 302 { DDB_ADD_CMD("call", db_fncall, CS_OWN, 303 "Call the function", "address[(expression[,...])]",NULL) }, 304 { DDB_ADD_CMD("callout", db_show_callout, 0, NULL, 305 NULL,NULL ) }, 306 { DDB_ADD_CMD("continue", db_continue_cmd, 0, 307 "Continue execution.", "[/c]",NULL) }, 308 { DDB_ADD_CMD("d", db_delete_cmd, 0, 309 "Delete a breakpoint.", "address | #number",NULL) }, 310 { DDB_ADD_CMD("delete", db_delete_cmd, 0, 311 "Delete a breakpoint.", "address | #number",NULL) }, 312 { DDB_ADD_CMD("dmesg", db_dmesg, 0, 313 "Show kernel message buffer.", "[count]",NULL) }, 314 { DDB_ADD_CMD("dwatch", db_deletewatch_cmd, 0, 315 "Delete the watchpoint.", "address",NULL) }, 316 { DDB_ADD_CMD("examine", db_examine_cmd, CS_SET_DOT, 317 "Display the address locations.", 318 "[/modifier] address[,count]",NULL) }, 319 { DDB_ADD_CMD("help", db_help_print_cmd, CS_OWN|CS_NOREPEAT, 320 "Display help about commands", 321 "Use other commands as arguments.",NULL) }, 322 { DDB_ADD_CMD("kill", db_kill_proc, CS_OWN, 323 "Send a signal to the process","pid[,signal_number]", 324 " pid:\t\t\tthe process id (may need 0t prefix for decimal)\n" 325 " signal_number:\tthe signal to send") }, 326 #ifdef KGDB 327 { DDB_ADD_CMD("kgdb", db_kgdb_cmd, 0, NULL,NULL,NULL) }, 328 #endif 329 { DDB_ADD_CMD("machine",NULL,CS_MACH, 330 "Architecture specific functions.",NULL,NULL) }, 331 { DDB_ADD_CMD("match", db_trace_until_matching_cmd,0, 332 "Stop at the matching return instruction.","See help next",NULL) }, 333 { DDB_ADD_CMD("next", db_trace_until_matching_cmd,0, 334 "Stop at the matching return instruction.","[/p]",NULL) }, 335 { DDB_ADD_CMD("p", db_print_cmd, 0, 336 "Print address according to the format.", 337 "[/axzodurc] address [address ...]",NULL) }, 338 { DDB_ADD_CMD("print", db_print_cmd, 0, 339 "Print address according to the format.", 340 "[/axzodurc] address [address ...]",NULL) }, 341 { DDB_ADD_CMD("ps", db_show_all_procs, 0, 342 "Print all processes.","See show all procs",NULL) }, 343 { DDB_ADD_CMD("reboot", db_reboot_cmd, CS_OWN, 344 "Reboot","0x1 RB_ASKNAME, 0x2 RB_SINGLE, 0x4 RB_NOSYNC, 0x8 RB_HALT," 345 "0x40 RB_KDB, 0x100 RB_DUMP, 0x808 RB_POWERDOWN",NULL) }, 346 { DDB_ADD_CMD("s", db_single_step_cmd, 0, 347 "Single-step count times.","[/p] [,count]",NULL) }, 348 { DDB_ADD_CMD("search", db_search_cmd, CS_OWN|CS_SET_DOT, 349 "Search memory from address for value.", 350 "[/bhl] address value [mask] [,count]",NULL) }, 351 { DDB_ADD_CMD("set", db_set_cmd, CS_OWN, 352 "Set the named variable","$variable [=] expression",NULL) }, 353 { DDB_ADD_CMD("show", NULL, CS_SHOW, 354 "Show kernel stats.", NULL,NULL) }, 355 { DDB_ADD_CMD("sifting", db_sifting_cmd, CS_OWN, 356 "Search the symbol tables ","[/F] string",NULL) }, 357 { DDB_ADD_CMD("step", db_single_step_cmd, 0, 358 "Single-step count times.","[/p] [,count]",NULL) }, 359 { DDB_ADD_CMD("sync", db_sync_cmd, CS_OWN, 360 "Force a crash dump, and then reboot.",NULL,NULL) }, 361 { DDB_ADD_CMD("trace", db_stack_trace_cmd, 0, 362 "Stack trace from frame-address.", 363 "[/u[l]] [frame-address][,count]",NULL) }, 364 { DDB_ADD_CMD("until", db_trace_until_call_cmd,0, 365 "Stop at the next call or return instruction.","[/p]",NULL) }, 366 { DDB_ADD_CMD("w", db_write_cmd, CS_MORE|CS_SET_DOT, 367 "Write the expressions at succeeding locations.", 368 "[/bhl] address expression [expression ...]",NULL) }, 369 { DDB_ADD_CMD("watch", db_watchpoint_cmd, CS_MORE, 370 "Set a watchpoint for a region. ","address[,size]",NULL) }, 371 { DDB_ADD_CMD("whatis", db_whatis_cmd, 0, 372 "Describe what an address is", "address", NULL) }, 373 { DDB_ADD_CMD("write", db_write_cmd, CS_MORE|CS_SET_DOT, 374 "Write the expressions at succeeding locations.", 375 "[/bhl] address expression [expression ...]",NULL) }, 376 { DDB_ADD_CMD("x", db_examine_cmd, CS_SET_DOT, 377 "Display the address locations.", 378 "[/modifier] address[,count]",NULL) }, 379 { DDB_ADD_CMD(NULL, NULL, 0, NULL, NULL, NULL) } 380 }; 381 382 static const struct db_command *db_last_command = NULL; 383 #if defined(DDB_COMMANDONENTER) 384 char db_cmd_on_enter[DB_LINE_MAXLEN + 1] = ___STRING(DDB_COMMANDONENTER); 385 #else /* defined(DDB_COMMANDONENTER) */ 386 char db_cmd_on_enter[DB_LINE_MAXLEN + 1] = ""; 387 #endif /* defined(DDB_COMMANDONENTER) */ 388 #define DB_LINE_SEP ';' 389 390 /* 391 * Utility routine - discard tokens through end-of-line. 392 */ 393 void 394 db_skip_to_eol(void) 395 { 396 int t; 397 398 do { 399 t = db_read_token(); 400 } while (t != tEOL); 401 } 402 403 void 404 db_error(const char *s) 405 { 406 407 if (s) 408 db_printf("%s", s); 409 db_flush_lex(); 410 longjmp(db_recover); 411 } 412 413 /*Execute commandlist after ddb start 414 *This function goes through the command list created from commands and ';' 415 */ 416 417 static void 418 db_execute_commandlist(const char *cmdlist) 419 { 420 const char *cmd = cmdlist; 421 const struct db_command *dummy = NULL; 422 423 while (*cmd != '\0') { 424 const char *ep = cmd; 425 426 while (*ep != '\0' && *ep != DB_LINE_SEP) { 427 ep++; 428 } 429 db_set_line(cmd, ep); 430 db_command(&dummy); 431 cmd = ep; 432 if (*cmd == DB_LINE_SEP) { 433 cmd++; 434 } 435 } 436 } 437 438 /*Initialize ddb command tables*/ 439 void 440 db_init_commands(void) 441 { 442 static bool done = false; 443 444 if (done) return; 445 done = true; 446 447 /* register command tables */ 448 (void)db_register_tbl_entry(DDB_BASE_CMD, &db_base_cmd_builtins); 449 #ifdef DB_MACHINE_COMMANDS 450 (void)db_register_tbl_entry(DDB_MACH_CMD, &db_mach_cmd_builtins); 451 #endif 452 (void)db_register_tbl_entry(DDB_SHOW_CMD, &db_show_cmd_builtins); 453 } 454 455 456 /* 457 * Add command table to the specified list 458 * Arg: 459 * int type specifies type of command table DDB_SHOW_CMD|DDB_BASE_CMD|DDB_MAC_CMD 460 * *cmd_tbl poiter to static allocated db_command table 461 * 462 *Command table must be NULL terminated array of struct db_command 463 */ 464 int 465 db_register_tbl(uint8_t type, const struct db_command *cmd_tbl) 466 { 467 struct db_cmd_tbl_en *list_ent; 468 469 if (cmd_tbl->name == 0) 470 /* empty list - ignore */ 471 return 0; 472 473 /* force builtin commands to be registered first */ 474 db_init_commands(); 475 476 /* now create a list entry for this table */ 477 list_ent = malloc(sizeof(struct db_cmd_tbl_en), M_TEMP, M_ZERO); 478 if (list_ent == NULL) 479 return ENOMEM; 480 list_ent->db_cmd=cmd_tbl; 481 482 /* and register it */ 483 return db_register_tbl_entry(type, list_ent); 484 } 485 486 static int 487 db_register_tbl_entry(uint8_t type, struct db_cmd_tbl_en *list_ent) 488 { 489 struct db_cmd_tbl_en_head *list; 490 491 switch(type) { 492 case DDB_BASE_CMD: 493 list = &db_base_cmd_list; 494 break; 495 case DDB_SHOW_CMD: 496 list = &db_show_cmd_list; 497 break; 498 case DDB_MACH_CMD: 499 list = &db_mach_cmd_list; 500 break; 501 default: 502 return ENOENT; 503 } 504 505 TAILQ_INSERT_TAIL(list, list_ent, db_cmd_next); 506 507 return 0; 508 } 509 510 /* 511 * Remove command table specified with db_cmd address == cmd_tbl 512 */ 513 int 514 db_unregister_tbl(uint8_t type,const struct db_command *cmd_tbl) 515 { 516 struct db_cmd_tbl_en *list_ent; 517 struct db_cmd_tbl_en_head *list; 518 519 /* find list on which the entry should live */ 520 switch (type) { 521 case DDB_BASE_CMD: 522 list=&db_base_cmd_list; 523 break; 524 case DDB_SHOW_CMD: 525 list=&db_show_cmd_list; 526 break; 527 case DDB_MACH_CMD: 528 list=&db_mach_cmd_list; 529 break; 530 default: 531 return EINVAL; 532 } 533 534 TAILQ_FOREACH (list_ent,list,db_cmd_next) { 535 if (list_ent->db_cmd == cmd_tbl){ 536 TAILQ_REMOVE(list, 537 list_ent,db_cmd_next); 538 free(list_ent,M_TEMP); 539 return 0; 540 } 541 } 542 return ENOENT; 543 } 544 545 /*This function is called from machine trap code.*/ 546 void 547 db_command_loop(void) 548 { 549 550 label_t db_jmpbuf; 551 label_t *savejmp; 552 553 /* 554 * Initialize 'prev' and 'next' to dot. 555 */ 556 db_prev = db_dot; 557 db_next = db_dot; 558 559 db_cmd_loop_done = false; 560 561 /*Init default command tables add machine, base, 562 show command tables to the list*/ 563 db_init_commands(); 564 565 /*save context for return from ddb*/ 566 savejmp = db_recover; 567 db_recover = &db_jmpbuf; 568 (void) setjmp(&db_jmpbuf); 569 570 /*Execute default ddb start commands*/ 571 db_execute_commandlist(db_cmd_on_enter); 572 573 (void) setjmp(&db_jmpbuf); 574 while (!db_cmd_loop_done) { 575 if (db_print_position() != 0) 576 db_printf("\n"); 577 db_output_line = 0; 578 579 580 #ifdef MULTIPROCESSOR 581 db_printf("db{%ld}> ", (long)cpu_number()); 582 #else 583 db_printf("db> "); 584 #endif 585 (void) db_read_line(); 586 587 db_command(&db_last_command); 588 } 589 590 db_recover = savejmp; 591 } 592 593 /* 594 * Search for command table for command prefix 595 * ret: CMD_UNIQUE -> completely matches command 596 * CMD_FOUND -> matches prefix of single command 597 * CMD_AMBIGIOUS -> matches prefix of more than one command 598 * CMD_NONE -> command not found 599 */ 600 static int 601 db_cmd_search(const char *name,const struct db_command *table, 602 const struct db_command **cmdp) 603 { 604 605 const struct db_command *cmd; 606 int result; 607 608 result = CMD_NONE; 609 *cmdp = NULL; 610 for (cmd = table; cmd->name != 0; cmd++) { 611 const char *lp; 612 const char *rp; 613 614 lp = name; 615 rp = cmd->name; 616 while (*lp != '\0' && *lp == *rp) { 617 rp++; 618 lp++; 619 } 620 621 if (*lp != '\0') /* mismatch or extra chars in name */ 622 continue; 623 624 if (*rp == '\0') { /* complete match */ 625 *cmdp = cmd; 626 return (CMD_UNIQUE); 627 } 628 629 /* prefix match: end of name, not end of command */ 630 if (result == CMD_NONE) { 631 result = CMD_FOUND; 632 *cmdp = cmd; 633 } 634 else if (result == CMD_FOUND) { 635 result = CMD_AMBIGUOUS; 636 *cmdp = NULL; 637 } 638 } 639 640 return (result); 641 } 642 643 /* 644 *List commands to the console. 645 */ 646 static void 647 db_cmd_list(const struct db_cmd_tbl_en_head *list) 648 { 649 650 struct db_cmd_tbl_en *list_ent; 651 const struct db_command *table; 652 size_t i, j, w, columns, lines, numcmds, width=0; 653 const char *p; 654 655 TAILQ_FOREACH(list_ent,list,db_cmd_next) { 656 table = list_ent->db_cmd; 657 for (i = 0; table[i].name != NULL; i++) { 658 w = strlen(table[i].name); 659 if (w > width) 660 width = w; 661 } 662 } 663 664 width = DB_NEXT_TAB(width); 665 666 columns = db_max_width / width; 667 if (columns == 0) 668 columns = 1; 669 670 TAILQ_FOREACH(list_ent,list,db_cmd_next) { 671 table = list_ent->db_cmd; 672 673 for (numcmds = 0; table[numcmds].name != NULL; numcmds++) 674 ; 675 lines = (numcmds + columns - 1) / columns; 676 677 for (i = 0; i < lines; i++) { 678 for (j = 0; j < columns; j++) { 679 p = table[j * lines + i].name; 680 if (p) 681 db_printf("%s", p); 682 if (j * lines + i + lines >= numcmds) { 683 db_putchar('\n'); 684 break; 685 } 686 if (p) { 687 w = strlen(p); 688 while (w < width) { 689 w = DB_NEXT_TAB(w); 690 db_putchar('\t'); 691 } 692 } 693 } 694 } 695 } 696 return; 697 } 698 699 /* 700 *Returns type of list for command with name *name. 701 */ 702 static int 703 db_get_list_type(const char *name) 704 { 705 706 const struct db_command *cmd; 707 struct db_cmd_tbl_en *list_ent; 708 int error,ret=-1; 709 710 /* search for the command name */ 711 TAILQ_FOREACH(list_ent,&db_base_cmd_list,db_cmd_next) { 712 /* 713 * cmd_search returns CMD_UNIQUE, CMD_FOUND ... 714 * CMD_UNIQUE when name was completly matched to cmd->name 715 * CMD_FOUND when name was only partially matched to cmd->name 716 * CMD_NONE command not found in a list 717 * CMD_AMBIGIOUS ->more partialy matches 718 */ 719 720 error = db_cmd_search(name, list_ent->db_cmd, &cmd); 721 722 if (error == CMD_UNIQUE) { 723 /* exact match found */ 724 if (cmd->flag == CS_SHOW) { 725 ret = DDB_SHOW_CMD; 726 break; 727 } 728 if (cmd->flag == CS_MACH) { 729 ret = DDB_MACH_CMD; 730 break; 731 } else { 732 ret = DDB_BASE_CMD; 733 break; 734 } 735 736 } else if (error == CMD_FOUND) { 737 /* 738 * partial match, search will continue, but 739 * note current result in case we won't 740 * find anything better. 741 */ 742 if (cmd->flag == CS_SHOW) 743 ret = DDB_SHOW_CMD; 744 else if (cmd->flag == CS_MACH) 745 ret = DDB_MACH_CMD; 746 else 747 ret = DDB_BASE_CMD; 748 } 749 } 750 751 return ret; 752 } 753 754 /* 755 *Parse command line and execute apropriate function. 756 */ 757 static void 758 db_command(const struct db_command **last_cmdp) 759 { 760 const struct db_command *command; 761 struct db_cmd_tbl_en *list_ent; 762 struct db_cmd_tbl_en_head *list; 763 764 int t; 765 int result; 766 767 char modif[TOK_STRING_SIZE]; 768 db_expr_t addr, count; 769 bool have_addr = false; 770 771 static db_expr_t last_count = 0; 772 773 command = NULL; /* XXX gcc */ 774 775 t = db_read_token(); 776 if ((t == tEOL) || (t == tCOMMA)) { 777 /* 778 * An empty line repeats last command, at 'next'. 779 * Only a count repeats the last command with the new count. 780 */ 781 command = *last_cmdp; 782 783 if (!command) 784 return; 785 786 addr = (db_expr_t)db_next; 787 if (t == tCOMMA) { 788 if (!db_expression(&count)) { 789 db_printf("Count missing\n"); 790 db_flush_lex(); 791 return; 792 } 793 } else 794 count = last_count; 795 have_addr = false; 796 modif[0] = '\0'; 797 db_skip_to_eol(); 798 799 } else if (t == tEXCL) { 800 db_fncall(0, 0, 0, NULL); 801 return; 802 803 } else if (t != tIDENT) { 804 db_printf("?\n"); 805 db_flush_lex(); 806 return; 807 808 } else { 809 810 switch(db_get_list_type(db_tok_string)) { 811 812 case DDB_BASE_CMD: 813 list = &db_base_cmd_list; 814 break; 815 816 case DDB_SHOW_CMD: 817 list = &db_show_cmd_list; 818 /* need to read show subcommand if show command list 819 is used. */ 820 t = db_read_token(); 821 822 if (t != tIDENT) { 823 /* if only show command is executed, print 824 all subcommands */ 825 db_cmd_list(list); 826 db_flush_lex(); 827 return; 828 } 829 break; 830 case DDB_MACH_CMD: 831 list = &db_mach_cmd_list; 832 /* need to read machine subcommand if 833 machine level 2 command list is used. */ 834 t = db_read_token(); 835 836 if (t != tIDENT) { 837 /* if only show command is executed, print 838 all subcommands */ 839 db_cmd_list(list); 840 db_flush_lex(); 841 return; 842 } 843 break; 844 default: 845 db_printf("No such command\n"); 846 db_flush_lex(); 847 return; 848 } 849 850 COMPAT_RET: 851 TAILQ_FOREACH(list_ent, list, db_cmd_next) { 852 result = db_cmd_search(db_tok_string, list_ent->db_cmd, 853 &command); 854 855 /* after CMD_UNIQUE in cmd_list only a single command 856 name is possible */ 857 if (result == CMD_UNIQUE) 858 break; 859 860 } 861 862 /* check compatibility flag */ 863 if (command && command->flag & CS_COMPAT){ 864 t = db_read_token(); 865 if (t != tIDENT) { 866 db_cmd_list(list); 867 db_flush_lex(); 868 return; 869 } 870 871 /* support only level 2 commands here */ 872 goto COMPAT_RET; 873 } 874 875 if (!command) { 876 db_printf("No such command\n"); 877 db_flush_lex(); 878 return; 879 } 880 881 if ((command->flag & CS_OWN) == 0) { 882 883 /* 884 * Standard syntax: 885 * command [/modifier] [addr] [,count] 886 */ 887 t = db_read_token(); /* get modifier */ 888 if (t == tSLASH) { 889 t = db_read_token(); 890 if (t != tIDENT) { 891 db_printf("Bad modifier\n"); 892 db_flush_lex(); 893 return; 894 } 895 /* save modifier */ 896 strlcpy(modif, db_tok_string, sizeof(modif)); 897 898 } else { 899 db_unread_token(t); 900 modif[0] = '\0'; 901 } 902 903 if (db_expression(&addr)) { /*get address*/ 904 db_dot = (db_addr_t) addr; 905 db_last_addr = db_dot; 906 have_addr = true; 907 } else { 908 addr = (db_expr_t) db_dot; 909 have_addr = false; 910 } 911 912 t = db_read_token(); 913 if (t == tCOMMA) { /*Get count*/ 914 if (!db_expression(&count)) { 915 db_printf("Count missing\n"); 916 db_flush_lex(); 917 return; 918 } 919 } else { 920 db_unread_token(t); 921 count = -1; 922 } 923 if ((command->flag & CS_MORE) == 0) { 924 db_skip_to_eol(); 925 } 926 } 927 } 928 929 if (command->flag & CS_NOREPEAT) { 930 *last_cmdp = NULL; 931 last_count = 0; 932 } else { 933 *last_cmdp = command; 934 last_count = count; 935 } 936 937 if (command != NULL) { 938 /* 939 * Execute the command. 940 */ 941 if (command->fcn != NULL) 942 (*command->fcn)(addr, have_addr, count, modif); 943 944 if (command->flag & CS_SET_DOT) { 945 /* 946 * If command changes dot, set dot to 947 * previous address displayed (if 'ed' style). 948 */ 949 if (db_ed_style) 950 db_dot = db_prev; 951 else 952 db_dot = db_next; 953 } else { 954 /* 955 * If command does not change dot, 956 * set 'next' location to be the same. 957 */ 958 db_next = db_dot; 959 } 960 } 961 } 962 963 /* 964 * Print help for commands 965 */ 966 static void 967 db_help_print_cmd(db_expr_t addr, bool have_addr, db_expr_t count, 968 const char *modif) 969 { 970 971 const struct db_cmd_tbl_en_head *list; 972 const struct db_cmd_tbl_en *list_ent; 973 const struct db_command *help = NULL; 974 int t, result; 975 976 t = db_read_token(); 977 /* is there another command after the "help"? */ 978 if (t == tIDENT){ 979 980 switch(db_get_list_type(db_tok_string)) { 981 982 case DDB_BASE_CMD: 983 list=&db_base_cmd_list; 984 break; 985 case DDB_SHOW_CMD: 986 list=&db_show_cmd_list; 987 /* read the show subcommand */ 988 t = db_read_token(); 989 990 if (t != tIDENT) { 991 /* no subcommand, print the list */ 992 db_cmd_list(list); 993 db_flush_lex(); 994 return; 995 } 996 997 break; 998 case DDB_MACH_CMD: 999 list=&db_mach_cmd_list; 1000 /* read machine subcommand */ 1001 t = db_read_token(); 1002 1003 if (t != tIDENT) { 1004 /* no subcommand - just print the list */ 1005 db_cmd_list(list); 1006 db_flush_lex(); 1007 return; 1008 } 1009 break; 1010 1011 default: 1012 db_printf("No such command\n"); 1013 db_flush_lex(); 1014 return; 1015 } 1016 COMPAT_RET: 1017 TAILQ_FOREACH(list_ent,list,db_cmd_next){ 1018 result = db_cmd_search(db_tok_string, list_ent->db_cmd, 1019 &help); 1020 /* after CMD_UNIQUE only a single command 1021 name is possible */ 1022 if (result == CMD_UNIQUE) 1023 break; 1024 } 1025 #ifdef DDB_VERBOSE_HELP 1026 /*print help*/ 1027 1028 db_printf("Command: %s\n",help->name); 1029 1030 if (help->cmd_descr != NULL) 1031 db_printf(" Description: %s\n",help->cmd_descr); 1032 1033 if (help->cmd_arg != NULL) 1034 db_printf(" Arguments: %s\n",help->cmd_arg); 1035 1036 if (help->cmd_arg_help != NULL) 1037 db_printf(" Arguments description:\n%s\n", 1038 help->cmd_arg_help); 1039 1040 if ((help->cmd_arg == NULL) && (help->cmd_descr == NULL)) 1041 db_printf("%s Doesn't have any help message included.\n", 1042 help->name); 1043 #endif 1044 /* check compatibility flag */ 1045 /* 1046 * The "show all" command table has been merged with the 1047 * "show" command table - but we want to keep the old UI 1048 * available. So if we find a CS_COMPAT entry, we read 1049 * the next token and try again. 1050 */ 1051 if (help->flag == CS_COMPAT){ 1052 t = db_read_token(); 1053 1054 if (t != tIDENT){ 1055 db_cmd_list(list); 1056 db_flush_lex(); 1057 return; 1058 } 1059 1060 goto COMPAT_RET; 1061 /* support only level 2 commands here */ 1062 } else { 1063 db_skip_to_eol(); 1064 } 1065 1066 } else /* t != tIDENT */ 1067 /* print base commands */ 1068 db_cmd_list(&db_base_cmd_list); 1069 1070 return; 1071 } 1072 1073 /*ARGSUSED*/ 1074 static void 1075 db_map_print_cmd(db_expr_t addr, bool have_addr, db_expr_t count, 1076 const char *modif) 1077 { 1078 bool full = false; 1079 1080 if (modif[0] == 'f') 1081 full = true; 1082 1083 if (have_addr == false) 1084 addr = (db_expr_t)(uintptr_t) kernel_map; 1085 1086 uvm_map_printit((struct vm_map *)(uintptr_t) addr, full, db_printf); 1087 } 1088 1089 /*ARGSUSED*/ 1090 static void 1091 db_malloc_print_cmd(db_expr_t addr, bool have_addr, 1092 db_expr_t count, const char *modif) 1093 { 1094 1095 #ifdef MALLOC_DEBUG 1096 if (!have_addr) 1097 addr = 0; 1098 1099 debug_malloc_printit(db_printf, (vaddr_t) addr); 1100 #else 1101 db_printf("The kernel is not built with the MALLOC_DEBUG option.\n"); 1102 #endif /* MALLOC_DEBUG */ 1103 } 1104 1105 /*ARGSUSED*/ 1106 static void 1107 db_object_print_cmd(db_expr_t addr, bool have_addr, 1108 db_expr_t count, const char *modif) 1109 { 1110 bool full = false; 1111 1112 if (modif[0] == 'f') 1113 full = true; 1114 1115 uvm_object_printit((struct uvm_object *)(uintptr_t) addr, full, 1116 db_printf); 1117 } 1118 1119 /*ARGSUSED*/ 1120 static void 1121 db_page_print_cmd(db_expr_t addr, bool have_addr, 1122 db_expr_t count, const char *modif) 1123 { 1124 bool full = false; 1125 1126 if (modif[0] == 'f') 1127 full = true; 1128 1129 uvm_page_printit((struct vm_page *)(uintptr_t) addr, full, db_printf); 1130 } 1131 1132 /*ARGSUSED*/ 1133 static void 1134 db_show_all_pages(db_expr_t addr, bool have_addr, 1135 db_expr_t count, const char *modif) 1136 { 1137 1138 uvm_page_printall(db_printf); 1139 } 1140 1141 /*ARGSUSED*/ 1142 static void 1143 db_buf_print_cmd(db_expr_t addr, bool have_addr, 1144 db_expr_t count, const char *modif) 1145 { 1146 bool full = false; 1147 1148 if (modif[0] == 'f') 1149 full = true; 1150 1151 vfs_buf_print((struct buf *)(uintptr_t) addr, full, db_printf); 1152 } 1153 1154 /*ARGSUSED*/ 1155 static void 1156 db_event_print_cmd(db_expr_t addr, bool have_addr, 1157 db_expr_t count, const char *modif) 1158 { 1159 bool full = false; 1160 1161 if (modif[0] == 'f') 1162 full = true; 1163 1164 event_print(full, db_printf); 1165 } 1166 1167 /*ARGSUSED*/ 1168 static void 1169 db_vnode_print_cmd(db_expr_t addr, bool have_addr, 1170 db_expr_t count, const char *modif) 1171 { 1172 bool full = false; 1173 1174 if (modif[0] == 'f') 1175 full = true; 1176 1177 vfs_vnode_print((struct vnode *)(uintptr_t) addr, full, db_printf); 1178 } 1179 1180 static void 1181 db_mount_print_cmd(db_expr_t addr, bool have_addr, 1182 db_expr_t count, const char *modif) 1183 { 1184 bool full = false; 1185 1186 if (modif[0] == 'f') 1187 full = true; 1188 1189 vfs_mount_print((struct mount *)(uintptr_t) addr, full, db_printf); 1190 } 1191 1192 /*ARGSUSED*/ 1193 static void 1194 db_mbuf_print_cmd(db_expr_t addr, bool have_addr, 1195 db_expr_t count, const char *modif) 1196 { 1197 1198 m_print((const struct mbuf *)(uintptr_t) addr, modif, db_printf); 1199 } 1200 1201 /*ARGSUSED*/ 1202 static void 1203 db_pool_print_cmd(db_expr_t addr, bool have_addr, 1204 db_expr_t count, const char *modif) 1205 { 1206 1207 pool_printit((struct pool *)(uintptr_t) addr, modif, db_printf); 1208 } 1209 1210 /*ARGSUSED*/ 1211 static void 1212 db_namecache_print_cmd(db_expr_t addr, bool have_addr, 1213 db_expr_t count, const char *modif) 1214 { 1215 1216 namecache_print((struct vnode *)(uintptr_t) addr, db_printf); 1217 } 1218 1219 /*ARGSUSED*/ 1220 static void 1221 db_uvmexp_print_cmd(db_expr_t addr, bool have_addr, 1222 db_expr_t count, const char *modif) 1223 { 1224 1225 uvmexp_print(db_printf); 1226 } 1227 1228 #ifdef UVMHIST 1229 /*ARGSUSED*/ 1230 static void 1231 db_uvmhist_print_cmd(db_expr_t addr, bool have_addr, 1232 db_expr_t count, const char *modif) 1233 { 1234 1235 uvmhist_print(db_printf); 1236 } 1237 #endif 1238 1239 /*ARGSUSED*/ 1240 static void 1241 db_lock_print_cmd(db_expr_t addr, bool have_addr, 1242 db_expr_t count, const char *modif) 1243 { 1244 1245 lockdebug_lock_print((void *)addr, db_printf); 1246 } 1247 1248 /* 1249 * Call random function: 1250 * !expr(arg,arg,arg) 1251 */ 1252 /*ARGSUSED*/ 1253 static void 1254 db_fncall(db_expr_t addr, bool have_addr, 1255 db_expr_t count, const char *modif) 1256 { 1257 db_expr_t fn_addr; 1258 #define MAXARGS 11 1259 db_expr_t args[MAXARGS]; 1260 int nargs = 0; 1261 db_expr_t retval; 1262 db_expr_t (*func)(db_expr_t, ...); 1263 int t; 1264 1265 if (!db_expression(&fn_addr)) { 1266 db_printf("Bad function\n"); 1267 db_flush_lex(); 1268 return; 1269 } 1270 func = (db_expr_t (*)(db_expr_t, ...))(uintptr_t) fn_addr; 1271 1272 t = db_read_token(); 1273 if (t == tLPAREN) { 1274 if (db_expression(&args[0])) { 1275 nargs++; 1276 while ((t = db_read_token()) == tCOMMA) { 1277 if (nargs == MAXARGS) { 1278 db_printf("Too many arguments\n"); 1279 db_flush_lex(); 1280 return; 1281 } 1282 if (!db_expression(&args[nargs])) { 1283 db_printf("Argument missing\n"); 1284 db_flush_lex(); 1285 return; 1286 } 1287 nargs++; 1288 } 1289 db_unread_token(t); 1290 } 1291 if (db_read_token() != tRPAREN) { 1292 db_printf("?\n"); 1293 db_flush_lex(); 1294 return; 1295 } 1296 } 1297 db_skip_to_eol(); 1298 1299 while (nargs < MAXARGS) { 1300 args[nargs++] = 0; 1301 } 1302 1303 retval = (*func)(args[0], args[1], args[2], args[3], args[4], 1304 args[5], args[6], args[7], args[8], args[9]); 1305 db_printf("%s\n", db_num_to_str(retval)); 1306 } 1307 1308 static void 1309 db_reboot_cmd(db_expr_t addr, bool have_addr, 1310 db_expr_t count, const char *modif) 1311 { 1312 db_expr_t bootflags; 1313 1314 /* Flags, default to RB_AUTOBOOT */ 1315 if (!db_expression(&bootflags)) 1316 bootflags = (db_expr_t)RB_AUTOBOOT; 1317 if (db_read_token() != tEOL) { 1318 db_error("?\n"); 1319 /*NOTREACHED*/ 1320 } 1321 /* 1322 * We are leaving DDB, never to return upward. 1323 * Clear db_recover so that we can debug faults in functions 1324 * called from cpu_reboot. 1325 */ 1326 db_recover = 0; 1327 cpu_reboot((int)bootflags, NULL); 1328 } 1329 1330 static void 1331 db_sifting_cmd(db_expr_t addr, bool have_addr, 1332 db_expr_t count, const char *modif) 1333 { 1334 int mode, t; 1335 1336 t = db_read_token(); 1337 if (t == tSLASH) { 1338 t = db_read_token(); 1339 if (t != tIDENT) { 1340 bad_modifier: 1341 db_printf("Bad modifier\n"); 1342 db_flush_lex(); 1343 return; 1344 } 1345 if (!strcmp(db_tok_string, "F")) 1346 mode = 'F'; 1347 else 1348 goto bad_modifier; 1349 t = db_read_token(); 1350 } else 1351 mode = 0; 1352 1353 if (t == tIDENT) 1354 db_sifting(db_tok_string, mode); 1355 else { 1356 db_printf("Bad argument (non-string)\n"); 1357 db_flush_lex(); 1358 } 1359 } 1360 1361 static void 1362 db_stack_trace_cmd(db_expr_t addr, bool have_addr, db_expr_t count, const char *modif) 1363 { 1364 register const char *cp = modif; 1365 register char c; 1366 void (*pr)(const char *, ...); 1367 1368 pr = db_printf; 1369 while ((c = *cp++) != 0) 1370 if (c == 'l') 1371 pr = printf; 1372 1373 if (count == -1) 1374 count = 65535; 1375 1376 db_stack_trace_print(addr, have_addr, count, modif, pr); 1377 } 1378 1379 static void 1380 db_sync_cmd(db_expr_t addr, bool have_addr, 1381 db_expr_t count, const char *modif) 1382 { 1383 1384 /* 1385 * We are leaving DDB, never to return upward. 1386 * Clear db_recover so that we can debug faults in functions 1387 * called from cpu_reboot. 1388 */ 1389 db_recover = 0; 1390 panicstr = "dump forced via kernel debugger"; 1391 cpu_reboot(RB_DUMP, NULL); 1392 } 1393 1394 /* 1395 * Describe what an address is 1396 */ 1397 void 1398 db_whatis_cmd(db_expr_t address, bool have_addr, 1399 db_expr_t count, const char *modif) 1400 { 1401 const uintptr_t addr = (uintptr_t)address; 1402 1403 lwp_whatis(addr, db_printf); 1404 pool_whatis(addr, db_printf); 1405 vmem_whatis(addr, db_printf); 1406 uvm_whatis(addr, db_printf); 1407 module_whatis(addr, db_printf); 1408 } 1409
Indexes created Sat Sep 20 22:09:52 GMT 2025