| 1 | /* $NetBSD: db_command.c,v 1.147 2016/04/13 00:47:02 ozaki-r 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@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 1.147 2016/04/13 00:47:02 ozaki-r 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 | #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/mbuf.h> |
| 82 | #include <sys/namei.h> |
| 83 | #include <sys/pool.h> |
| 84 | #include <sys/proc.h> |
| 85 | #include <sys/vnode.h> |
| 86 | #include <sys/vmem.h> |
| 87 | #include <sys/lockdebug.h> |
| 88 | #include <sys/cpu.h> |
| 89 | #include <sys/buf.h> |
| 90 | #include <sys/module.h> |
| 91 | #include <sys/kernhist.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 | #include <net/route.h> |
| 102 | |
| 103 | /* |
| 104 | * Results of command search. |
| 105 | */ |
| 106 | #define CMD_EXACT 0 |
| 107 | #define CMD_PREFIX 1 |
| 108 | #define CMD_NONE 2 |
| 109 | #define CMD_AMBIGUOUS 3 |
| 110 | |
| 111 | /* |
| 112 | * Exported global variables |
| 113 | */ |
| 114 | bool db_cmd_loop_done; |
| 115 | label_t *db_recover; |
| 116 | db_addr_t db_dot; |
| 117 | db_addr_t db_last_addr; |
| 118 | db_addr_t db_prev; |
| 119 | db_addr_t db_next; |
| 120 | |
| 121 | |
| 122 | /* |
| 123 | * New DDB api for adding and removing commands uses three lists, because |
| 124 | * we use two types of commands |
| 125 | * a) standard commands without subcommands -> reboot |
| 126 | * b) show commands which are subcommands of show command -> show aio_jobs |
| 127 | * c) if defined machine specific commands |
| 128 | * |
| 129 | * ddb_add_cmd, ddb_rem_cmd use type (DDB_SHOW_CMD||DDB_BASE_CMD)argument to |
| 130 | * add them to representativ lists. |
| 131 | */ |
| 132 | |
| 133 | static const struct db_command db_command_table[]; |
| 134 | static const struct db_command db_show_cmds[]; |
| 135 | |
| 136 | #ifdef DB_MACHINE_COMMANDS |
| 137 | /* arch/<arch>/<arch>/db_interface.c */ |
| 138 | extern const struct db_command db_machine_command_table[]; |
| 139 | #endif |
| 140 | |
| 141 | /* the global queue of all command tables */ |
| 142 | TAILQ_HEAD(db_cmd_tbl_en_head, db_cmd_tbl_en); |
| 143 | |
| 144 | /* TAILQ entry used to register command tables */ |
| 145 | struct db_cmd_tbl_en { |
| 146 | const struct db_command *db_cmd; /* cmd table */ |
| 147 | TAILQ_ENTRY(db_cmd_tbl_en) db_cmd_next; |
| 148 | }; |
| 149 | |
| 150 | /* head of base commands list */ |
| 151 | static struct db_cmd_tbl_en_head db_base_cmd_list = |
| 152 | TAILQ_HEAD_INITIALIZER(db_base_cmd_list); |
| 153 | static struct db_cmd_tbl_en db_base_cmd_builtins = |
| 154 | { .db_cmd = db_command_table }; |
| 155 | |
| 156 | /* head of show commands list */ |
| 157 | static struct db_cmd_tbl_en_head db_show_cmd_list = |
| 158 | TAILQ_HEAD_INITIALIZER(db_show_cmd_list); |
| 159 | static struct db_cmd_tbl_en db_show_cmd_builtins = |
| 160 | { .db_cmd = db_show_cmds }; |
| 161 | |
| 162 | /* head of machine commands list */ |
| 163 | static struct db_cmd_tbl_en_head db_mach_cmd_list = |
| 164 | TAILQ_HEAD_INITIALIZER(db_mach_cmd_list); |
| 165 | #ifdef DB_MACHINE_COMMANDS |
| 166 | static struct db_cmd_tbl_en db_mach_cmd_builtins = |
| 167 | { .db_cmd = db_machine_command_table }; |
| 168 | #endif |
| 169 | |
| 170 | /* |
| 171 | * if 'ed' style: 'dot' is set at start of last item printed, |
| 172 | * and '+' points to next line. |
| 173 | * Otherwise: 'dot' points to next item, '..' points to last. |
| 174 | */ |
| 175 | static bool db_ed_style = true; |
| 176 | |
| 177 | static void db_init_commands(void); |
| 178 | static int db_register_tbl_entry(uint8_t type, |
| 179 | struct db_cmd_tbl_en *list_ent); |
| 180 | static void db_cmd_list(const struct db_cmd_tbl_en_head *); |
| 181 | static int db_cmd_search(const char *, struct db_cmd_tbl_en_head *, |
| 182 | const struct db_command **); |
| 183 | static int db_cmd_search_table(const char *, const struct db_command *, |
| 184 | const struct db_command **); |
| 185 | static void db_cmd_search_failed(char *, int); |
| 186 | static const struct db_command *db_read_command(void); |
| 187 | static void db_command(const struct db_command **); |
| 188 | static void db_buf_print_cmd(db_expr_t, bool, db_expr_t, const char *); |
| 189 | static void db_event_print_cmd(db_expr_t, bool, db_expr_t, const char *); |
| 190 | static void db_fncall(db_expr_t, bool, db_expr_t, const char *); |
| 191 | static void db_help_print_cmd(db_expr_t, bool, db_expr_t, const char *); |
| 192 | static void db_lock_print_cmd(db_expr_t, bool, db_expr_t, const char *); |
| 193 | static void db_mount_print_cmd(db_expr_t, bool, db_expr_t, const char *); |
| 194 | static void db_mbuf_print_cmd(db_expr_t, bool, db_expr_t, const char *); |
| 195 | static void db_map_print_cmd(db_expr_t, bool, db_expr_t, const char *); |
| 196 | static void db_namecache_print_cmd(db_expr_t, bool, db_expr_t, |
| 197 | const char *); |
| 198 | static void db_object_print_cmd(db_expr_t, bool, db_expr_t, const char *); |
| 199 | static void db_page_print_cmd(db_expr_t, bool, db_expr_t, const char *); |
| 200 | static void db_show_all_pages(db_expr_t, bool, db_expr_t, const char *); |
| 201 | static void db_pool_print_cmd(db_expr_t, bool, db_expr_t, const char *); |
| 202 | static void db_reboot_cmd(db_expr_t, bool, db_expr_t, const char *); |
| 203 | static void db_sifting_cmd(db_expr_t, bool, db_expr_t, const char *); |
| 204 | static void db_stack_trace_cmd(db_expr_t, bool, db_expr_t, const char *); |
| 205 | static void db_sync_cmd(db_expr_t, bool, db_expr_t, const char *); |
| 206 | static void db_whatis_cmd(db_expr_t, bool, db_expr_t, const char *); |
| 207 | static void db_uvmexp_print_cmd(db_expr_t, bool, db_expr_t, const char *); |
| 208 | #ifdef KERNHIST |
| 209 | static void db_kernhist_print_cmd(db_expr_t, bool, db_expr_t, const char *); |
| 210 | #endif |
| 211 | static void db_vnode_print_cmd(db_expr_t, bool, db_expr_t, const char *); |
| 212 | static void db_vmem_print_cmd(db_expr_t, bool, db_expr_t, const char *); |
| 213 | |
| 214 | static const struct db_command db_show_cmds[] = { |
| 215 | /*added from all sub cmds*/ |
| 216 | { DDB_ADD_CMD("callout" , db_show_callout, |
| 217 | 0 ,"List all used callout functions." ,NULL,NULL) }, |
| 218 | { DDB_ADD_CMD("pages" , db_show_all_pages, |
| 219 | 0 ,"List all used memory pages." ,NULL,NULL) }, |
| 220 | { DDB_ADD_CMD("proc" , db_show_proc, |
| 221 | 0 ,"Print process information." ,NULL,NULL) }, |
| 222 | { DDB_ADD_CMD("procs" , db_show_all_procs, |
| 223 | 0 ,"List all processes." ,NULL,NULL) }, |
| 224 | { DDB_ADD_CMD("pools" , db_show_all_pools, |
| 225 | 0 ,"Show all pools" ,NULL,NULL) }, |
| 226 | #ifdef AIO |
| 227 | /*added from all sub cmds*/ |
| 228 | { DDB_ADD_CMD("aio_jobs" , db_show_aio_jobs, 0, |
| 229 | "Show aio jobs" ,NULL,NULL) }, |
| 230 | #endif |
| 231 | { DDB_ADD_CMD("all" , NULL, |
| 232 | CS_COMPAT, NULL,NULL,NULL) }, |
| 233 | #if defined(INET) |
| 234 | { DDB_ADD_CMD("routes" , db_show_routes, 0,NULL,NULL,NULL) }, |
| 235 | #endif |
| 236 | #ifdef _KERNEL |
| 237 | { DDB_ADD_CMD("breaks" , db_listbreak_cmd, 0, |
| 238 | "Display all breaks." ,NULL,NULL) }, |
| 239 | #endif |
| 240 | { DDB_ADD_CMD("buf" , db_buf_print_cmd, 0, |
| 241 | "Print the struct buf at address." , "[/f] address" ,NULL) }, |
| 242 | { DDB_ADD_CMD("event" , db_event_print_cmd, 0, |
| 243 | "Print all the non-zero evcnt(9) event counters." , "[/fitm]" ,NULL) }, |
| 244 | { DDB_ADD_CMD("files" , db_show_files_cmd, 0, |
| 245 | "Print the files open by process at address" , |
| 246 | "[/f] address" , NULL) }, |
| 247 | { DDB_ADD_CMD("lock" , db_lock_print_cmd, 0,NULL,NULL,NULL) }, |
| 248 | { DDB_ADD_CMD("map" , db_map_print_cmd, 0, |
| 249 | "Print the vm_map at address." , "[/f] address" ,NULL) }, |
| 250 | { DDB_ADD_CMD("module" , db_show_module_cmd, 0, |
| 251 | "Print kernel modules" , NULL, NULL) }, |
| 252 | { DDB_ADD_CMD("mount" , db_mount_print_cmd, 0, |
| 253 | "Print the mount structure at address." , "[/f] address" ,NULL) }, |
| 254 | #ifdef MQUEUE |
| 255 | { DDB_ADD_CMD("mqueue" , db_show_mqueue_cmd, 0, |
| 256 | "Print the message queues" , NULL, NULL) }, |
| 257 | #endif |
| 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("panic" , db_show_panic, 0, |
| 267 | "Print the current panic string" ,NULL,NULL) }, |
| 268 | { DDB_ADD_CMD("pool" , db_pool_print_cmd, 0, |
| 269 | "Print the pool at address." , "[/clp] address" ,NULL) }, |
| 270 | { DDB_ADD_CMD("registers" , db_show_regs, 0, |
| 271 | "Display the register set." , "[/u]" ,NULL) }, |
| 272 | { DDB_ADD_CMD("sched_qs" , db_show_sched_qs, 0, |
| 273 | "Print the state of the scheduler's run queues." , |
| 274 | NULL,NULL) }, |
| 275 | { DDB_ADD_CMD("uvmexp" , db_uvmexp_print_cmd, 0, |
| 276 | "Print a selection of UVM counters and statistics." , |
| 277 | NULL,NULL) }, |
| 278 | #ifdef KERNHIST |
| 279 | { DDB_ADD_CMD("kernhist" , db_kernhist_print_cmd, 0, |
| 280 | "Print the UVM history logs." , |
| 281 | NULL,NULL) }, |
| 282 | #endif |
| 283 | { DDB_ADD_CMD("vnode" , db_vnode_print_cmd, 0, |
| 284 | "Print the vnode at address." , "[/f] address" ,NULL) }, |
| 285 | { DDB_ADD_CMD("vmem" , db_vmem_print_cmd, 0, |
| 286 | "Print the vmem usage." , "[/a] address" , NULL) }, |
| 287 | { DDB_ADD_CMD("vmems" , db_show_all_vmems, 0, |
| 288 | "Show all vmems." , NULL, NULL) }, |
| 289 | #ifdef _KERNEL |
| 290 | { DDB_ADD_CMD("watches" , db_listwatch_cmd, 0, |
| 291 | "Display all watchpoints." , NULL,NULL) }, |
| 292 | #endif |
| 293 | { DDB_ADD_CMD(NULL, NULL, 0,NULL,NULL,NULL) } |
| 294 | }; |
| 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 | { DDB_ADD_CMD("callout" , db_show_callout, 0, NULL, |
| 308 | NULL,NULL ) }, |
| 309 | { DDB_ADD_CMD("continue" , db_continue_cmd, 0, |
| 310 | "Continue execution." , "[/c]" ,NULL) }, |
| 311 | { DDB_ADD_CMD("d" , db_delete_cmd, 0, |
| 312 | "Delete a breakpoint." , "address | #number" ,NULL) }, |
| 313 | { DDB_ADD_CMD("delete" , db_delete_cmd, 0, |
| 314 | "Delete a breakpoint." , "address | #number" ,NULL) }, |
| 315 | { DDB_ADD_CMD("dmesg" , db_dmesg, 0, |
| 316 | "Show kernel message buffer." , "[count]" ,NULL) }, |
| 317 | { DDB_ADD_CMD("dwatch" , db_deletewatch_cmd, 0, |
| 318 | "Delete the watchpoint." , "address" ,NULL) }, |
| 319 | { DDB_ADD_CMD("examine" , db_examine_cmd, CS_SET_DOT, |
| 320 | "Display the address locations." , |
| 321 | "[/modifier] address[,count]" ,NULL) }, |
| 322 | { DDB_ADD_CMD("exit" , db_continue_cmd, 0, |
| 323 | "Continue execution." , "[/c]" ,NULL) }, |
| 324 | { DDB_ADD_CMD("help" , db_help_print_cmd, CS_OWN|CS_NOREPEAT, |
| 325 | "Display help about commands" , |
| 326 | "Use other commands as arguments." ,NULL) }, |
| 327 | { DDB_ADD_CMD("kill" , db_kill_proc, CS_OWN, |
| 328 | "Send a signal to the process" ,"pid[,signal_number]" , |
| 329 | " pid:\t\t\tthe process id (may need 0t prefix for decimal)\n" |
| 330 | " signal_number:\tthe signal to send" ) }, |
| 331 | #ifdef KGDB |
| 332 | { DDB_ADD_CMD("kgdb" , db_kgdb_cmd, 0, NULL,NULL,NULL) }, |
| 333 | #endif |
| 334 | { DDB_ADD_CMD("machine" ,NULL,CS_MACH, |
| 335 | "Architecture specific functions." ,NULL,NULL) }, |
| 336 | { DDB_ADD_CMD("match" , db_trace_until_matching_cmd,0, |
| 337 | "Stop at the matching return instruction." ,"See help next" ,NULL) }, |
| 338 | { DDB_ADD_CMD("next" , db_trace_until_matching_cmd,0, |
| 339 | "Stop at the matching return instruction." ,"[/p]" ,NULL) }, |
| 340 | { DDB_ADD_CMD("p" , db_print_cmd, 0, |
| 341 | "Print address according to the format." , |
| 342 | "[/axzodurc] address [address ...]" ,NULL) }, |
| 343 | { DDB_ADD_CMD("print" , db_print_cmd, 0, |
| 344 | "Print address according to the format." , |
| 345 | "[/axzodurc] address [address ...]" ,NULL) }, |
| 346 | { DDB_ADD_CMD("ps" , db_show_all_procs, 0, |
| 347 | "Print all processes." ,"See show all procs" ,NULL) }, |
| 348 | { DDB_ADD_CMD("quit" , db_continue_cmd, 0, |
| 349 | "Continue execution." , "[/c]" ,NULL) }, |
| 350 | { DDB_ADD_CMD("reboot" , db_reboot_cmd, CS_OWN, |
| 351 | "Reboot" ,"0x1 RB_ASKNAME, 0x2 RB_SINGLE, 0x4 RB_NOSYNC, 0x8 RB_HALT," |
| 352 | "0x40 RB_KDB, 0x100 RB_DUMP, 0x808 RB_POWERDOWN" ,NULL) }, |
| 353 | { DDB_ADD_CMD("s" , db_single_step_cmd, 0, |
| 354 | "Single-step count times." ,"[/p] [,count]" ,NULL) }, |
| 355 | { DDB_ADD_CMD("search" , db_search_cmd, CS_OWN|CS_SET_DOT, |
| 356 | "Search memory from address for value." , |
| 357 | "[/bhl] address value [mask] [,count]" ,NULL) }, |
| 358 | { DDB_ADD_CMD("set" , db_set_cmd, CS_OWN, |
| 359 | "Set the named variable" ,"$variable [=] expression" ,NULL) }, |
| 360 | { DDB_ADD_CMD("show" , NULL, CS_SHOW, |
| 361 | "Show kernel stats." , NULL,NULL) }, |
| 362 | { DDB_ADD_CMD("sifting" , db_sifting_cmd, CS_OWN, |
| 363 | "Search the symbol tables " ,"[/F] string" ,NULL) }, |
| 364 | { DDB_ADD_CMD("step" , db_single_step_cmd, 0, |
| 365 | "Single-step count times." ,"[/p] [,count]" ,NULL) }, |
| 366 | { DDB_ADD_CMD("sync" , db_sync_cmd, CS_OWN, |
| 367 | "Force a crash dump, and then reboot." ,NULL,NULL) }, |
| 368 | { DDB_ADD_CMD("trace" , db_stack_trace_cmd, 0, |
| 369 | "Stack trace from frame-address." , |
| 370 | "[/u[l]] [frame-address][,count]" ,NULL) }, |
| 371 | { DDB_ADD_CMD("until" , db_trace_until_call_cmd,0, |
| 372 | "Stop at the next call or return instruction." ,"[/p]" ,NULL) }, |
| 373 | { DDB_ADD_CMD("w" , 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("watch" , db_watchpoint_cmd, CS_MORE, |
| 377 | "Set a watchpoint for a region. " ,"address[,size]" ,NULL) }, |
| 378 | { DDB_ADD_CMD("whatis" , db_whatis_cmd, 0, |
| 379 | "Describe what an address is" , "address" , NULL) }, |
| 380 | { DDB_ADD_CMD("write" , db_write_cmd, CS_MORE|CS_SET_DOT, |
| 381 | "Write the expressions at succeeding locations." , |
| 382 | "[/bhl] address expression [expression ...]" ,NULL) }, |
| 383 | { DDB_ADD_CMD("x" , db_examine_cmd, CS_SET_DOT, |
| 384 | "Display the address locations." , |
| 385 | "[/modifier] address[,count]" ,NULL) }, |
| 386 | { DDB_ADD_CMD(NULL, NULL, 0, NULL, NULL, NULL) } |
| 387 | }; |
| 388 | |
| 389 | static const struct db_command *db_last_command = NULL; |
| 390 | #if defined(DDB_COMMANDONENTER) |
| 391 | char db_cmd_on_enter[DB_LINE_MAXLEN + 1] = ___STRING(DDB_COMMANDONENTER); |
| 392 | #else /* defined(DDB_COMMANDONENTER) */ |
| 393 | char db_cmd_on_enter[DB_LINE_MAXLEN + 1] = "" ; |
| 394 | #endif /* defined(DDB_COMMANDONENTER) */ |
| 395 | #define DB_LINE_SEP ';' |
| 396 | |
| 397 | /* |
| 398 | * Execute commandlist after ddb start |
| 399 | * This function goes through the command list created from commands and ';' |
| 400 | */ |
| 401 | static void |
| 402 | db_execute_commandlist(const char *cmdlist) |
| 403 | { |
| 404 | const char *cmd = cmdlist; |
| 405 | const struct db_command *dummy = NULL; |
| 406 | |
| 407 | while (*cmd != '\0') { |
| 408 | const char *ep = cmd; |
| 409 | |
| 410 | while (*ep != '\0' && *ep != DB_LINE_SEP) { |
| 411 | ep++; |
| 412 | } |
| 413 | db_set_line(cmd, ep); |
| 414 | db_command(&dummy); |
| 415 | cmd = ep; |
| 416 | if (*cmd == DB_LINE_SEP) { |
| 417 | cmd++; |
| 418 | } |
| 419 | } |
| 420 | } |
| 421 | |
| 422 | /* Initialize ddb command tables */ |
| 423 | void |
| 424 | db_init_commands(void) |
| 425 | { |
| 426 | static bool done = false; |
| 427 | |
| 428 | if (done) return; |
| 429 | done = true; |
| 430 | |
| 431 | /* register command tables */ |
| 432 | (void)db_register_tbl_entry(DDB_BASE_CMD, &db_base_cmd_builtins); |
| 433 | #ifdef DB_MACHINE_COMMANDS |
| 434 | (void)db_register_tbl_entry(DDB_MACH_CMD, &db_mach_cmd_builtins); |
| 435 | #endif |
| 436 | (void)db_register_tbl_entry(DDB_SHOW_CMD, &db_show_cmd_builtins); |
| 437 | } |
| 438 | |
| 439 | |
| 440 | /* |
| 441 | * Add command table to the specified list |
| 442 | * Arg: |
| 443 | * int type specifies type of command table DDB_SHOW_CMD|DDB_BASE_CMD|DDB_MAC_CMD |
| 444 | * *cmd_tbl poiter to static allocated db_command table |
| 445 | * |
| 446 | * Command table must be NULL terminated array of struct db_command |
| 447 | */ |
| 448 | int |
| 449 | db_register_tbl(uint8_t type, const struct db_command *cmd_tbl) |
| 450 | { |
| 451 | struct db_cmd_tbl_en *list_ent; |
| 452 | |
| 453 | /* empty list - ignore */ |
| 454 | if (cmd_tbl->name == 0) |
| 455 | return 0; |
| 456 | |
| 457 | /* force builtin commands to be registered first */ |
| 458 | db_init_commands(); |
| 459 | |
| 460 | /* now create a list entry for this table */ |
| 461 | list_ent = db_zalloc(sizeof(*list_ent)); |
| 462 | if (list_ent == NULL) |
| 463 | return ENOMEM; |
| 464 | list_ent->db_cmd=cmd_tbl; |
| 465 | |
| 466 | /* and register it */ |
| 467 | return db_register_tbl_entry(type, list_ent); |
| 468 | } |
| 469 | |
| 470 | static int |
| 471 | db_register_tbl_entry(uint8_t type, struct db_cmd_tbl_en *list_ent) |
| 472 | { |
| 473 | struct db_cmd_tbl_en_head *list; |
| 474 | |
| 475 | switch(type) { |
| 476 | case DDB_BASE_CMD: |
| 477 | list = &db_base_cmd_list; |
| 478 | break; |
| 479 | case DDB_SHOW_CMD: |
| 480 | list = &db_show_cmd_list; |
| 481 | break; |
| 482 | case DDB_MACH_CMD: |
| 483 | list = &db_mach_cmd_list; |
| 484 | break; |
| 485 | default: |
| 486 | return ENOENT; |
| 487 | } |
| 488 | |
| 489 | TAILQ_INSERT_TAIL(list, list_ent, db_cmd_next); |
| 490 | |
| 491 | return 0; |
| 492 | } |
| 493 | |
| 494 | /* |
| 495 | * Remove command table specified with db_cmd address == cmd_tbl |
| 496 | */ |
| 497 | int |
| 498 | db_unregister_tbl(uint8_t type,const struct db_command *cmd_tbl) |
| 499 | { |
| 500 | struct db_cmd_tbl_en *list_ent; |
| 501 | struct db_cmd_tbl_en_head *list; |
| 502 | |
| 503 | /* find list on which the entry should live */ |
| 504 | switch (type) { |
| 505 | case DDB_BASE_CMD: |
| 506 | list=&db_base_cmd_list; |
| 507 | break; |
| 508 | case DDB_SHOW_CMD: |
| 509 | list=&db_show_cmd_list; |
| 510 | break; |
| 511 | case DDB_MACH_CMD: |
| 512 | list=&db_mach_cmd_list; |
| 513 | break; |
| 514 | default: |
| 515 | return EINVAL; |
| 516 | } |
| 517 | |
| 518 | TAILQ_FOREACH (list_ent, list, db_cmd_next) { |
| 519 | if (list_ent->db_cmd == cmd_tbl){ |
| 520 | TAILQ_REMOVE(list, |
| 521 | list_ent, db_cmd_next); |
| 522 | db_free(list_ent, sizeof(*list_ent)); |
| 523 | return 0; |
| 524 | } |
| 525 | } |
| 526 | return ENOENT; |
| 527 | } |
| 528 | |
| 529 | /* This function is called from machine trap code. */ |
| 530 | void |
| 531 | db_command_loop(void) |
| 532 | { |
| 533 | label_t db_jmpbuf; |
| 534 | label_t *savejmp; |
| 535 | |
| 536 | /* |
| 537 | * Initialize 'prev' and 'next' to dot. |
| 538 | */ |
| 539 | db_prev = db_dot; |
| 540 | db_next = db_dot; |
| 541 | |
| 542 | db_cmd_loop_done = false; |
| 543 | |
| 544 | /* Init default command tables add machine, base, |
| 545 | show command tables to the list */ |
| 546 | db_init_commands(); |
| 547 | |
| 548 | /* save context for return from ddb */ |
| 549 | savejmp = db_recover; |
| 550 | db_recover = &db_jmpbuf; |
| 551 | (void) setjmp(&db_jmpbuf); |
| 552 | |
| 553 | /* |
| 554 | * Execute default ddb start commands only if this is the |
| 555 | * first entry into DDB, in case the start commands fault |
| 556 | * and we recurse into here. |
| 557 | */ |
| 558 | if (!savejmp) |
| 559 | db_execute_commandlist(db_cmd_on_enter); |
| 560 | |
| 561 | (void) setjmp(&db_jmpbuf); |
| 562 | while (!db_cmd_loop_done) { |
| 563 | if (db_print_position() != 0) |
| 564 | db_printf("\n" ); |
| 565 | db_output_line = 0; |
| 566 | (void) db_read_line(); |
| 567 | db_command(&db_last_command); |
| 568 | } |
| 569 | |
| 570 | db_recover = savejmp; |
| 571 | } |
| 572 | |
| 573 | /* |
| 574 | * Search command table for command prefix |
| 575 | */ |
| 576 | static int |
| 577 | db_cmd_search_table(const char *name, |
| 578 | const struct db_command *table, |
| 579 | const struct db_command **cmdp) |
| 580 | { |
| 581 | |
| 582 | const struct db_command *cmd; |
| 583 | int result; |
| 584 | |
| 585 | result = CMD_NONE; |
| 586 | *cmdp = NULL; |
| 587 | |
| 588 | for (cmd = table; cmd->name != 0; cmd++) { |
| 589 | const char *lp; |
| 590 | const char *rp; |
| 591 | |
| 592 | lp = name; |
| 593 | rp = cmd->name; |
| 594 | while (*lp != '\0' && *lp == *rp) { |
| 595 | rp++; |
| 596 | lp++; |
| 597 | } |
| 598 | |
| 599 | if (*lp != '\0') /* mismatch or extra chars in name */ |
| 600 | continue; |
| 601 | |
| 602 | if (*rp == '\0') { /* exact match */ |
| 603 | *cmdp = cmd; |
| 604 | return (CMD_EXACT); |
| 605 | } |
| 606 | |
| 607 | /* prefix match: end of name, not end of command */ |
| 608 | if (result == CMD_NONE) { |
| 609 | result = CMD_PREFIX; |
| 610 | *cmdp = cmd; |
| 611 | } |
| 612 | else if (result == CMD_PREFIX) { |
| 613 | result = CMD_AMBIGUOUS; |
| 614 | *cmdp = NULL; |
| 615 | } |
| 616 | } |
| 617 | |
| 618 | return (result); |
| 619 | } |
| 620 | |
| 621 | |
| 622 | /* |
| 623 | * Search list of command tables for command |
| 624 | */ |
| 625 | static int |
| 626 | db_cmd_search(const char *name, |
| 627 | struct db_cmd_tbl_en_head *list_head, |
| 628 | const struct db_command **cmdp) |
| 629 | { |
| 630 | struct db_cmd_tbl_en *list_ent; |
| 631 | const struct db_command *found_command; |
| 632 | bool accept_prefix_match; |
| 633 | int result; |
| 634 | |
| 635 | result = CMD_NONE; |
| 636 | found_command = NULL; |
| 637 | accept_prefix_match = true; |
| 638 | |
| 639 | TAILQ_FOREACH(list_ent, list_head, db_cmd_next) { |
| 640 | const struct db_command *cmd; |
| 641 | int found; |
| 642 | |
| 643 | found = db_cmd_search_table(name, list_ent->db_cmd, &cmd); |
| 644 | if (found == CMD_EXACT) { |
| 645 | result = CMD_EXACT; |
| 646 | found_command = cmd; |
| 647 | break; |
| 648 | } |
| 649 | |
| 650 | if (found == CMD_PREFIX) { |
| 651 | if (accept_prefix_match) { |
| 652 | /* |
| 653 | * Continue search, but note current result |
| 654 | * in case we won't find anything else. |
| 655 | */ |
| 656 | accept_prefix_match = false; |
| 657 | result = CMD_PREFIX; |
| 658 | found_command = cmd; |
| 659 | } else { |
| 660 | /* |
| 661 | * Watch out for globally ambiguous |
| 662 | * prefix match that is not locally |
| 663 | * ambiguous - with one match in one |
| 664 | * table and another match(es) in |
| 665 | * another table. |
| 666 | */ |
| 667 | result = CMD_AMBIGUOUS; |
| 668 | found_command = NULL; |
| 669 | } |
| 670 | } |
| 671 | else if (found == CMD_AMBIGUOUS) { |
| 672 | accept_prefix_match = false; |
| 673 | result = CMD_AMBIGUOUS; |
| 674 | found_command = NULL; |
| 675 | } |
| 676 | } |
| 677 | |
| 678 | *cmdp = found_command; |
| 679 | return result; |
| 680 | } |
| 681 | |
| 682 | static void |
| 683 | db_cmd_search_failed(char *name, int search_result) |
| 684 | { |
| 685 | if (search_result == CMD_NONE) |
| 686 | db_printf("No such command: %s\n" , name); |
| 687 | else |
| 688 | db_printf("Ambiguous command: %s\n" , name); |
| 689 | } |
| 690 | |
| 691 | |
| 692 | /* |
| 693 | * List commands to the console. |
| 694 | */ |
| 695 | static void |
| 696 | db_cmd_list(const struct db_cmd_tbl_en_head *list) |
| 697 | { |
| 698 | |
| 699 | struct db_cmd_tbl_en *list_ent; |
| 700 | const struct db_command *table; |
| 701 | size_t i, j, w, columns, lines, numcmds, width=0; |
| 702 | const char *p; |
| 703 | |
| 704 | TAILQ_FOREACH(list_ent,list,db_cmd_next) { |
| 705 | table = list_ent->db_cmd; |
| 706 | for (i = 0; table[i].name != NULL; i++) { |
| 707 | w = strlen(table[i].name); |
| 708 | if (w > width) |
| 709 | width = w; |
| 710 | } |
| 711 | } |
| 712 | |
| 713 | width = DB_NEXT_TAB(width); |
| 714 | |
| 715 | columns = db_max_width / width; |
| 716 | if (columns == 0) |
| 717 | columns = 1; |
| 718 | |
| 719 | TAILQ_FOREACH(list_ent,list,db_cmd_next) { |
| 720 | table = list_ent->db_cmd; |
| 721 | |
| 722 | for (numcmds = 0; table[numcmds].name != NULL; numcmds++) |
| 723 | ; |
| 724 | lines = (numcmds + columns - 1) / columns; |
| 725 | |
| 726 | for (i = 0; i < lines; i++) { |
| 727 | for (j = 0; j < columns; j++) { |
| 728 | p = table[j * lines + i].name; |
| 729 | if (p) |
| 730 | db_printf("%s" , p); |
| 731 | if (j * lines + i + lines >= numcmds) { |
| 732 | db_putchar('\n'); |
| 733 | break; |
| 734 | } |
| 735 | if (p) { |
| 736 | w = strlen(p); |
| 737 | while (w < width) { |
| 738 | w = DB_NEXT_TAB(w); |
| 739 | db_putchar('\t'); |
| 740 | } |
| 741 | } |
| 742 | } |
| 743 | } |
| 744 | } |
| 745 | return; |
| 746 | } |
| 747 | |
| 748 | /* |
| 749 | * Read complete command with all subcommands, starting with current |
| 750 | * db_tok_string. If subcommand is missing, print the list of all |
| 751 | * subcommands. If command/subcommand is not found, print an error |
| 752 | * message. Returns pointer to "leaf" command or NULL. |
| 753 | */ |
| 754 | static const struct db_command * |
| 755 | db_read_command(void) |
| 756 | { |
| 757 | const struct db_command *command; |
| 758 | struct db_cmd_tbl_en_head *list; |
| 759 | int found; |
| 760 | int t; |
| 761 | |
| 762 | list = &db_base_cmd_list; |
| 763 | do { |
| 764 | found = db_cmd_search(db_tok_string, list, &command); |
| 765 | if (command == NULL) { |
| 766 | db_cmd_search_failed(db_tok_string, found); |
| 767 | db_flush_lex(); |
| 768 | return NULL; |
| 769 | } |
| 770 | |
| 771 | if (command->flag == CS_SHOW) |
| 772 | list = &db_show_cmd_list; |
| 773 | else if (command->flag == CS_MACH) |
| 774 | list = &db_mach_cmd_list; |
| 775 | else if (command->flag == CS_COMPAT) |
| 776 | /* same list */; |
| 777 | else |
| 778 | break; /* expect no more subcommands */ |
| 779 | |
| 780 | t = db_read_token(); /* read subcommand */ |
| 781 | if (t != tIDENT) { |
| 782 | /* if none given - just print all of them */ |
| 783 | db_cmd_list(list); |
| 784 | db_flush_lex(); |
| 785 | return NULL; |
| 786 | } |
| 787 | } while (list != NULL); |
| 788 | |
| 789 | return command; |
| 790 | } |
| 791 | |
| 792 | /* |
| 793 | * Parse command line and execute apropriate function. |
| 794 | */ |
| 795 | static void |
| 796 | db_command(const struct db_command **last_cmdp) |
| 797 | { |
| 798 | const struct db_command *command; |
| 799 | static db_expr_t last_count = 0; |
| 800 | db_expr_t addr, count; |
| 801 | char modif[TOK_STRING_SIZE]; |
| 802 | |
| 803 | int t; |
| 804 | bool have_addr = false; |
| 805 | |
| 806 | command = NULL; |
| 807 | |
| 808 | t = db_read_token(); |
| 809 | if ((t == tEOL) || (t == tCOMMA)) { |
| 810 | /* |
| 811 | * An empty line repeats last command, at 'next'. |
| 812 | * Only a count repeats the last command with the new count. |
| 813 | */ |
| 814 | command = *last_cmdp; |
| 815 | |
| 816 | if (!command) |
| 817 | return; |
| 818 | |
| 819 | addr = (db_expr_t)db_next; |
| 820 | if (t == tCOMMA) { |
| 821 | if (!db_expression(&count)) { |
| 822 | db_printf("Count missing\n" ); |
| 823 | db_flush_lex(); |
| 824 | return; |
| 825 | } |
| 826 | } else |
| 827 | count = last_count; |
| 828 | have_addr = false; |
| 829 | modif[0] = '\0'; |
| 830 | db_skip_to_eol(); |
| 831 | |
| 832 | } else if (t == tEXCL) { |
| 833 | db_fncall(0, 0, 0, NULL); |
| 834 | return; |
| 835 | |
| 836 | } else if (t != tIDENT) { |
| 837 | db_printf("?\n" ); |
| 838 | db_flush_lex(); |
| 839 | return; |
| 840 | |
| 841 | } else { |
| 842 | |
| 843 | command = db_read_command(); |
| 844 | if (command == NULL) |
| 845 | return; |
| 846 | |
| 847 | if ((command->flag & CS_OWN) == 0) { |
| 848 | |
| 849 | /* |
| 850 | * Standard syntax: |
| 851 | * command [/modifier] [addr] [,count] |
| 852 | */ |
| 853 | t = db_read_token(); /* get modifier */ |
| 854 | if (t == tSLASH) { |
| 855 | t = db_read_token(); |
| 856 | if (t != tIDENT) { |
| 857 | db_printf("Bad modifier\n" ); |
| 858 | db_flush_lex(); |
| 859 | return; |
| 860 | } |
| 861 | /* save modifier */ |
| 862 | strlcpy(modif, db_tok_string, sizeof(modif)); |
| 863 | |
| 864 | } else { |
| 865 | db_unread_token(t); |
| 866 | modif[0] = '\0'; |
| 867 | } |
| 868 | |
| 869 | if (db_expression(&addr)) { /*get address*/ |
| 870 | db_dot = (db_addr_t) addr; |
| 871 | db_last_addr = db_dot; |
| 872 | have_addr = true; |
| 873 | } else { |
| 874 | addr = (db_expr_t) db_dot; |
| 875 | have_addr = false; |
| 876 | } |
| 877 | |
| 878 | t = db_read_token(); |
| 879 | if (t == tCOMMA) { /*Get count*/ |
| 880 | if (!db_expression(&count)) { |
| 881 | db_printf("Count missing\n" ); |
| 882 | db_flush_lex(); |
| 883 | return; |
| 884 | } |
| 885 | } else { |
| 886 | db_unread_token(t); |
| 887 | count = -1; |
| 888 | } |
| 889 | if ((command->flag & CS_MORE) == 0) { |
| 890 | db_skip_to_eol(); |
| 891 | } |
| 892 | } |
| 893 | } |
| 894 | |
| 895 | if (command != NULL && command->flag & CS_NOREPEAT) { |
| 896 | *last_cmdp = NULL; |
| 897 | last_count = 0; |
| 898 | } else { |
| 899 | *last_cmdp = command; |
| 900 | last_count = count; |
| 901 | } |
| 902 | |
| 903 | |
| 904 | if (command != NULL) { |
| 905 | /* |
| 906 | * Execute the command. |
| 907 | */ |
| 908 | if (command->fcn != NULL) |
| 909 | (*command->fcn)(addr, have_addr, count, modif); |
| 910 | |
| 911 | if (command->flag & CS_SET_DOT) { |
| 912 | /* |
| 913 | * If command changes dot, set dot to |
| 914 | * previous address displayed (if 'ed' style). |
| 915 | */ |
| 916 | if (db_ed_style) |
| 917 | db_dot = db_prev; |
| 918 | else |
| 919 | db_dot = db_next; |
| 920 | } else { |
| 921 | /* |
| 922 | * If command does not change dot, |
| 923 | * set 'next' location to be the same. |
| 924 | */ |
| 925 | db_next = db_dot; |
| 926 | } |
| 927 | } |
| 928 | } |
| 929 | |
| 930 | /* |
| 931 | * Print help for commands |
| 932 | */ |
| 933 | static void |
| 934 | db_help_print_cmd(db_expr_t addr, bool have_addr, db_expr_t count, |
| 935 | const char *modif) |
| 936 | { |
| 937 | const struct db_command *command; |
| 938 | int t; |
| 939 | |
| 940 | t = db_read_token(); |
| 941 | |
| 942 | /* is there another command after the "help"? */ |
| 943 | if (t != tIDENT) { |
| 944 | /* print base commands */ |
| 945 | db_cmd_list(&db_base_cmd_list); |
| 946 | return; |
| 947 | } |
| 948 | |
| 949 | command = db_read_command(); |
| 950 | if (command == NULL) |
| 951 | return; |
| 952 | |
| 953 | #ifdef DDB_VERBOSE_HELP |
| 954 | db_printf("Command: %s\n" , command->name); |
| 955 | if (command->cmd_descr != NULL) |
| 956 | db_printf(" Description: %s\n" , command->cmd_descr); |
| 957 | if (command->cmd_arg != NULL) |
| 958 | db_printf(" Arguments: %s\n" , command->cmd_arg); |
| 959 | if (command->cmd_arg_help != NULL) |
| 960 | db_printf(" Arguments description:\n%s\n" , |
| 961 | command->cmd_arg_help); |
| 962 | if ((command->cmd_arg == NULL) && (command->cmd_descr == NULL)) |
| 963 | db_printf(" No help message.\n" ); |
| 964 | #endif |
| 965 | |
| 966 | db_skip_to_eol(); |
| 967 | } |
| 968 | |
| 969 | /*ARGSUSED*/ |
| 970 | static void |
| 971 | db_map_print_cmd(db_expr_t addr, bool have_addr, db_expr_t count, |
| 972 | const char *modif) |
| 973 | { |
| 974 | #ifdef _KERNEL |
| 975 | bool full = false; |
| 976 | |
| 977 | if (modif[0] == 'f') |
| 978 | full = true; |
| 979 | |
| 980 | if (have_addr == false) |
| 981 | addr = (db_expr_t)(uintptr_t)db_read_ptr("kernel_map" ); |
| 982 | |
| 983 | uvm_map_printit((struct vm_map *)(uintptr_t) addr, full, db_printf); |
| 984 | #endif /* XXX CRASH(8) */ |
| 985 | } |
| 986 | |
| 987 | /*ARGSUSED*/ |
| 988 | static void |
| 989 | db_object_print_cmd(db_expr_t addr, bool have_addr, |
| 990 | db_expr_t count, const char *modif) |
| 991 | { |
| 992 | #ifdef _KERNEL /* XXX CRASH(8) */ |
| 993 | bool full = false; |
| 994 | |
| 995 | if (modif[0] == 'f') |
| 996 | full = true; |
| 997 | |
| 998 | uvm_object_printit((struct uvm_object *)(uintptr_t) addr, full, |
| 999 | db_printf); |
| 1000 | #endif |
| 1001 | } |
| 1002 | |
| 1003 | /*ARGSUSED*/ |
| 1004 | static void |
| 1005 | db_page_print_cmd(db_expr_t addr, bool have_addr, |
| 1006 | db_expr_t count, const char *modif) |
| 1007 | { |
| 1008 | #ifdef _KERNEL /* XXX CRASH(8) */ |
| 1009 | bool full = false; |
| 1010 | |
| 1011 | if (modif[0] == 'f') |
| 1012 | full = true; |
| 1013 | |
| 1014 | uvm_page_printit((struct vm_page *)(uintptr_t) addr, full, db_printf); |
| 1015 | #endif |
| 1016 | } |
| 1017 | |
| 1018 | /*ARGSUSED*/ |
| 1019 | static void |
| 1020 | db_show_all_pages(db_expr_t addr, bool have_addr, |
| 1021 | db_expr_t count, const char *modif) |
| 1022 | { |
| 1023 | |
| 1024 | #ifdef _KERNEL /* XXX CRASH(8) */ |
| 1025 | uvm_page_printall(db_printf); |
| 1026 | #endif |
| 1027 | } |
| 1028 | |
| 1029 | /*ARGSUSED*/ |
| 1030 | static void |
| 1031 | db_buf_print_cmd(db_expr_t addr, bool have_addr, |
| 1032 | db_expr_t count, const char *modif) |
| 1033 | { |
| 1034 | #ifdef _KERNEL /* XXX CRASH(8) */ |
| 1035 | bool full = false; |
| 1036 | |
| 1037 | if (modif[0] == 'f') |
| 1038 | full = true; |
| 1039 | |
| 1040 | vfs_buf_print((struct buf *)(uintptr_t) addr, full, db_printf); |
| 1041 | #endif |
| 1042 | } |
| 1043 | |
| 1044 | /*ARGSUSED*/ |
| 1045 | static void |
| 1046 | db_event_print_cmd(db_expr_t addr, bool have_addr, |
| 1047 | db_expr_t count, const char *modif) |
| 1048 | { |
| 1049 | bool showzero = false; |
| 1050 | bool showall = true; |
| 1051 | bool showintr = false; |
| 1052 | bool showtrap = false; |
| 1053 | bool showmisc = false; |
| 1054 | struct evcnt ev, *evp; |
| 1055 | char buf[80]; |
| 1056 | int i; |
| 1057 | |
| 1058 | i = 0; |
| 1059 | while (modif[i]) { |
| 1060 | switch (modif[i]) { |
| 1061 | case 'f': |
| 1062 | showzero = true; |
| 1063 | break; |
| 1064 | case 'i': |
| 1065 | showintr = true; |
| 1066 | showall = false; |
| 1067 | break; |
| 1068 | case 't': |
| 1069 | showtrap = true; |
| 1070 | showall = false; |
| 1071 | break; |
| 1072 | case 'm': |
| 1073 | showmisc = true; |
| 1074 | showall = false; |
| 1075 | break; |
| 1076 | } |
| 1077 | i++; |
| 1078 | } |
| 1079 | |
| 1080 | if (showall) |
| 1081 | showmisc = showintr = showtrap = true; |
| 1082 | |
| 1083 | evp = (struct evcnt *)db_read_ptr("allevents" ); |
| 1084 | while (evp != NULL) { |
| 1085 | db_read_bytes((db_addr_t)evp, sizeof(ev), (char *)&ev); |
| 1086 | evp = ev.ev_list.tqe_next; |
| 1087 | if (ev.ev_count == 0 && !showzero) |
| 1088 | continue; |
| 1089 | if (ev.ev_type == EVCNT_TYPE_INTR && !showintr) |
| 1090 | continue; |
| 1091 | if (ev.ev_type == EVCNT_TYPE_TRAP && !showtrap) |
| 1092 | continue; |
| 1093 | if (ev.ev_type == EVCNT_TYPE_MISC && !showmisc) |
| 1094 | continue; |
| 1095 | db_read_bytes((db_addr_t)ev.ev_group, ev.ev_grouplen + 1, buf); |
| 1096 | db_printf("evcnt type %d: %s " , ev.ev_type, buf); |
| 1097 | db_read_bytes((db_addr_t)ev.ev_name, ev.ev_namelen + 1, buf); |
| 1098 | db_printf("%s = %lld\n" , buf, (long long)ev.ev_count); |
| 1099 | } |
| 1100 | } |
| 1101 | |
| 1102 | /*ARGSUSED*/ |
| 1103 | static void |
| 1104 | db_vnode_print_cmd(db_expr_t addr, bool have_addr, |
| 1105 | db_expr_t count, const char *modif) |
| 1106 | { |
| 1107 | #ifdef _KERNEL /* XXX CRASH(8) */ |
| 1108 | bool full = false; |
| 1109 | |
| 1110 | if (modif[0] == 'f') |
| 1111 | full = true; |
| 1112 | |
| 1113 | vfs_vnode_print((struct vnode *)(uintptr_t) addr, full, db_printf); |
| 1114 | #endif |
| 1115 | } |
| 1116 | |
| 1117 | /*ARGSUSED*/ |
| 1118 | static void |
| 1119 | db_vmem_print_cmd(db_expr_t addr, bool have_addr, |
| 1120 | db_expr_t count, const char *modif) |
| 1121 | { |
| 1122 | |
| 1123 | #ifdef _KERNEL /* XXX CRASH(8) */ |
| 1124 | vmem_print((uintptr_t) addr, modif, db_printf); |
| 1125 | #endif |
| 1126 | } |
| 1127 | |
| 1128 | static void |
| 1129 | db_mount_print_cmd(db_expr_t addr, bool have_addr, |
| 1130 | db_expr_t count, const char *modif) |
| 1131 | { |
| 1132 | #ifdef _KERNEL /* XXX CRASH(8) */ |
| 1133 | bool full = false; |
| 1134 | |
| 1135 | if (modif[0] == 'f') |
| 1136 | full = true; |
| 1137 | |
| 1138 | vfs_mount_print((struct mount *)(uintptr_t) addr, full, db_printf); |
| 1139 | #endif |
| 1140 | } |
| 1141 | |
| 1142 | /*ARGSUSED*/ |
| 1143 | static void |
| 1144 | db_mbuf_print_cmd(db_expr_t addr, bool have_addr, |
| 1145 | db_expr_t count, const char *modif) |
| 1146 | { |
| 1147 | |
| 1148 | #ifdef _KERNEL /* XXX CRASH(8) */ |
| 1149 | m_print((const struct mbuf *)(uintptr_t) addr, modif, db_printf); |
| 1150 | #endif |
| 1151 | } |
| 1152 | |
| 1153 | /*ARGSUSED*/ |
| 1154 | static void |
| 1155 | db_pool_print_cmd(db_expr_t addr, bool have_addr, |
| 1156 | db_expr_t count, const char *modif) |
| 1157 | { |
| 1158 | |
| 1159 | #ifdef _KERNEL /* XXX CRASH(8) */ |
| 1160 | pool_printit((struct pool *)(uintptr_t) addr, modif, db_printf); |
| 1161 | #endif |
| 1162 | } |
| 1163 | |
| 1164 | /*ARGSUSED*/ |
| 1165 | static void |
| 1166 | db_namecache_print_cmd(db_expr_t addr, bool have_addr, |
| 1167 | db_expr_t count, const char *modif) |
| 1168 | { |
| 1169 | |
| 1170 | #ifdef _KERNEL /* XXX CRASH(8) */ |
| 1171 | namecache_print((struct vnode *)(uintptr_t) addr, db_printf); |
| 1172 | #endif |
| 1173 | } |
| 1174 | |
| 1175 | /*ARGSUSED*/ |
| 1176 | static void |
| 1177 | db_uvmexp_print_cmd(db_expr_t addr, bool have_addr, |
| 1178 | db_expr_t count, const char *modif) |
| 1179 | { |
| 1180 | |
| 1181 | #ifdef _KERNEL /* XXX CRASH(8) */ |
| 1182 | uvmexp_print(db_printf); |
| 1183 | #endif |
| 1184 | } |
| 1185 | |
| 1186 | #ifdef KERNHIST |
| 1187 | /*ARGSUSED*/ |
| 1188 | static void |
| 1189 | db_kernhist_print_cmd(db_expr_t addr, bool have_addr, |
| 1190 | db_expr_t count, const char *modif) |
| 1191 | { |
| 1192 | |
| 1193 | kernhist_print((void *)(uintptr_t)addr, db_printf); |
| 1194 | } |
| 1195 | #endif |
| 1196 | |
| 1197 | /*ARGSUSED*/ |
| 1198 | static void |
| 1199 | db_lock_print_cmd(db_expr_t addr, bool have_addr, |
| 1200 | db_expr_t count, const char *modif) |
| 1201 | { |
| 1202 | |
| 1203 | #ifdef _KERNEL /* XXX CRASH(8) */ |
| 1204 | lockdebug_lock_print((void *)(uintptr_t)addr, db_printf); |
| 1205 | #endif |
| 1206 | } |
| 1207 | |
| 1208 | /* |
| 1209 | * Call random function: |
| 1210 | * !expr(arg,arg,arg) |
| 1211 | */ |
| 1212 | /*ARGSUSED*/ |
| 1213 | static void |
| 1214 | db_fncall(db_expr_t addr, bool have_addr, |
| 1215 | db_expr_t count, const char *modif) |
| 1216 | { |
| 1217 | #ifdef _KERNEL |
| 1218 | db_expr_t fn_addr; |
| 1219 | #define MAXARGS 11 |
| 1220 | db_expr_t args[MAXARGS]; |
| 1221 | int nargs = 0; |
| 1222 | db_expr_t retval; |
| 1223 | db_expr_t (*func)(db_expr_t, ...); |
| 1224 | int t; |
| 1225 | |
| 1226 | if (!db_expression(&fn_addr)) { |
| 1227 | db_printf("Bad function\n" ); |
| 1228 | db_flush_lex(); |
| 1229 | return; |
| 1230 | } |
| 1231 | func = (db_expr_t (*)(db_expr_t, ...))(uintptr_t) fn_addr; |
| 1232 | |
| 1233 | t = db_read_token(); |
| 1234 | if (t == tLPAREN) { |
| 1235 | if (db_expression(&args[0])) { |
| 1236 | nargs++; |
| 1237 | while ((t = db_read_token()) == tCOMMA) { |
| 1238 | if (nargs == MAXARGS) { |
| 1239 | db_printf("Too many arguments\n" ); |
| 1240 | db_flush_lex(); |
| 1241 | return; |
| 1242 | } |
| 1243 | if (!db_expression(&args[nargs])) { |
| 1244 | db_printf("Argument missing\n" ); |
| 1245 | db_flush_lex(); |
| 1246 | return; |
| 1247 | } |
| 1248 | nargs++; |
| 1249 | } |
| 1250 | db_unread_token(t); |
| 1251 | } |
| 1252 | if (db_read_token() != tRPAREN) { |
| 1253 | db_printf("?\n" ); |
| 1254 | db_flush_lex(); |
| 1255 | return; |
| 1256 | } |
| 1257 | } |
| 1258 | db_skip_to_eol(); |
| 1259 | |
| 1260 | while (nargs < MAXARGS) { |
| 1261 | args[nargs++] = 0; |
| 1262 | } |
| 1263 | |
| 1264 | retval = (*func)(args[0], args[1], args[2], args[3], args[4], |
| 1265 | args[5], args[6], args[7], args[8], args[9]); |
| 1266 | db_printf("%s\n" , db_num_to_str(retval)); |
| 1267 | #else /* _KERNEL */ |
| 1268 | db_printf("This command can only be used in-kernel.\n" ); |
| 1269 | #endif /* _KERNEL */ |
| 1270 | } |
| 1271 | |
| 1272 | static void |
| 1273 | db_reboot_cmd(db_expr_t addr, bool have_addr, |
| 1274 | db_expr_t count, const char *modif) |
| 1275 | { |
| 1276 | #ifdef _KERNEL |
| 1277 | db_expr_t bootflags; |
| 1278 | |
| 1279 | /* Flags, default to RB_AUTOBOOT */ |
| 1280 | if (!db_expression(&bootflags)) |
| 1281 | bootflags = (db_expr_t)RB_AUTOBOOT; |
| 1282 | if (db_read_token() != tEOL) { |
| 1283 | db_error("?\n" ); |
| 1284 | /*NOTREACHED*/ |
| 1285 | } |
| 1286 | /* |
| 1287 | * We are leaving DDB, never to return upward. |
| 1288 | * Clear db_recover so that we can debug faults in functions |
| 1289 | * called from cpu_reboot. |
| 1290 | */ |
| 1291 | db_recover = 0; |
| 1292 | panicstr = "reboot forced via kernel debugger" ; |
| 1293 | cpu_reboot((int)bootflags, NULL); |
| 1294 | #else /* _KERNEL */ |
| 1295 | db_printf("This command can only be used in-kernel.\n" ); |
| 1296 | #endif /* _KERNEL */ |
| 1297 | } |
| 1298 | |
| 1299 | static void |
| 1300 | db_sifting_cmd(db_expr_t addr, bool have_addr, |
| 1301 | db_expr_t count, const char *modif) |
| 1302 | { |
| 1303 | int mode, t; |
| 1304 | |
| 1305 | t = db_read_token(); |
| 1306 | if (t == tSLASH) { |
| 1307 | t = db_read_token(); |
| 1308 | if (t != tIDENT) { |
| 1309 | bad_modifier: |
| 1310 | db_printf("Bad modifier\n" ); |
| 1311 | db_flush_lex(); |
| 1312 | return; |
| 1313 | } |
| 1314 | if (!strcmp(db_tok_string, "F" )) |
| 1315 | mode = 'F'; |
| 1316 | else |
| 1317 | goto bad_modifier; |
| 1318 | t = db_read_token(); |
| 1319 | } else |
| 1320 | mode = 0; |
| 1321 | |
| 1322 | if (t == tIDENT) |
| 1323 | db_sifting(db_tok_string, mode); |
| 1324 | else { |
| 1325 | db_printf("Bad argument (non-string)\n" ); |
| 1326 | db_flush_lex(); |
| 1327 | } |
| 1328 | } |
| 1329 | |
| 1330 | static void |
| 1331 | db_stack_trace_cmd(db_expr_t addr, bool have_addr, db_expr_t count, const char *modif) |
| 1332 | { |
| 1333 | register const char *cp = modif; |
| 1334 | register char c; |
| 1335 | void (*pr)(const char *, ...); |
| 1336 | |
| 1337 | pr = db_printf; |
| 1338 | while ((c = *cp++) != 0) |
| 1339 | if (c == 'l') |
| 1340 | pr = (void (*)(const char *, ...))printf; |
| 1341 | |
| 1342 | if (count == -1) |
| 1343 | count = 65535; |
| 1344 | |
| 1345 | db_stack_trace_print(addr, have_addr, count, modif, pr); |
| 1346 | } |
| 1347 | |
| 1348 | static void |
| 1349 | db_sync_cmd(db_expr_t addr, bool have_addr, |
| 1350 | db_expr_t count, const char *modif) |
| 1351 | { |
| 1352 | #ifdef _KERNEL |
| 1353 | /* |
| 1354 | * We are leaving DDB, never to return upward. |
| 1355 | * Clear db_recover so that we can debug faults in functions |
| 1356 | * called from cpu_reboot. |
| 1357 | */ |
| 1358 | db_recover = 0; |
| 1359 | panicstr = "dump forced via kernel debugger" ; |
| 1360 | cpu_reboot(RB_DUMP, NULL); |
| 1361 | #else /* _KERNEL */ |
| 1362 | db_printf("This command can only be used in-kernel.\n" ); |
| 1363 | #endif /* _KERNEL */ |
| 1364 | } |
| 1365 | |
| 1366 | /* |
| 1367 | * Describe what an address is |
| 1368 | */ |
| 1369 | void |
| 1370 | db_whatis_cmd(db_expr_t address, bool have_addr, |
| 1371 | db_expr_t count, const char *modif) |
| 1372 | { |
| 1373 | const uintptr_t addr = (uintptr_t)address; |
| 1374 | |
| 1375 | db_lwp_whatis(addr, db_printf); |
| 1376 | #ifdef _KERNEL /* XXX CRASH(8) */ |
| 1377 | pool_whatis(addr, db_printf); |
| 1378 | vmem_whatis(addr, db_printf); |
| 1379 | uvm_whatis(addr, db_printf); |
| 1380 | module_whatis(addr, db_printf); |
| 1381 | #endif |
| 1382 | } |
| 1383 | |