db_command.c revision 183054
1139747Simp/*- 24Srgrimes * Mach Operating System 34Srgrimes * Copyright (c) 1991,1990 Carnegie Mellon University 44Srgrimes * All Rights Reserved. 58876Srgrimes * 64Srgrimes * Permission to use, copy, modify and distribute this software and its 74Srgrimes * documentation is hereby granted, provided that both the copyright 84Srgrimes * notice and this permission notice appear in all copies of the 94Srgrimes * software, derivative works or modified versions, and any portions 104Srgrimes * thereof, and that both notices appear in supporting documentation. 118876Srgrimes * 128876Srgrimes * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS 134Srgrimes * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 144Srgrimes * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 158876Srgrimes * 164Srgrimes * Carnegie Mellon requests users of this software to return to 178876Srgrimes * 184Srgrimes * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 194Srgrimes * School of Computer Science 204Srgrimes * Carnegie Mellon University 214Srgrimes * Pittsburgh PA 15213-3890 228876Srgrimes * 234Srgrimes * any improvements or extensions that they make and grant Carnegie the 244Srgrimes * rights to redistribute these changes. 254Srgrimes */ 264Srgrimes/* 274Srgrimes * Author: David B. Golub, Carnegie Mellon University 284Srgrimes * Date: 7/90 294Srgrimes */ 304Srgrimes/* 314Srgrimes * Command dispatcher. 324Srgrimes */ 33116176Sobrien 34116176Sobrien#include <sys/cdefs.h> 35116176Sobrien__FBSDID("$FreeBSD: head/sys/ddb/db_command.c 183054 2008-09-15 22:45:14Z sam $"); 36116176Sobrien 372056Swollman#include <sys/param.h> 3842654Sjdp#include <sys/linker_set.h> 3986998Sdd#include <sys/lock.h> 40131952Smarcel#include <sys/kdb.h> 4186998Sdd#include <sys/mutex.h> 4286998Sdd#include <sys/proc.h> 4317848Spst#include <sys/reboot.h> 4486998Sdd#include <sys/signalvar.h> 452056Swollman#include <sys/systm.h> 4649558Sphk#include <sys/cons.h> 47126399Sphk#include <sys/watchdog.h> 48183054Ssam#include <sys/kernel.h> 4912734Sbde 502056Swollman#include <ddb/ddb.h> 5112473Sbde#include <ddb/db_command.h> 524Srgrimes#include <ddb/db_lex.h> 534Srgrimes#include <ddb/db_output.h> 544Srgrimes 55118990Smarcel#include <machine/cpu.h> 5679418Sjulian#include <machine/setjmp.h> 574Srgrimes 584Srgrimes/* 594Srgrimes * Exported global variables 604Srgrimes */ 614Srgrimesboolean_t db_cmd_loop_done; 6218296Sbdedb_addr_t db_dot; 634Srgrimesdb_addr_t db_last_addr; 644Srgrimesdb_addr_t db_prev; 654Srgrimesdb_addr_t db_next; 664Srgrimes 6712515Sphkstatic db_cmdfcn_t db_fncall; 68132002Smarcelstatic db_cmdfcn_t db_gdb; 69163192Sbdestatic db_cmdfcn_t db_halt; 7086998Sddstatic db_cmdfcn_t db_kill; 7185944Speterstatic db_cmdfcn_t db_reset; 72132482Smarcelstatic db_cmdfcn_t db_stack_trace; 73150819Srwatsonstatic db_cmdfcn_t db_stack_trace_all; 74126399Sphkstatic db_cmdfcn_t db_watchdog; 7517848Spst 76148919Sobrien/* 77148919Sobrien * 'show' commands 78148919Sobrien */ 7918296Sbde 80148919Sobrienstatic struct command db_show_all_cmds[] = { 81183054Ssam { "trace", db_stack_trace_all, 0, 0 }, 82148919Sobrien}; 83183054Ssamstruct command_table db_show_all_table = 84183054Ssam LIST_HEAD_INITIALIZER(db_show_all_table); 85148919Sobrien 86148919Sobrienstatic struct command db_show_cmds[] = { 87156412Sjhb { "all", 0, 0, &db_show_all_table }, 88148919Sobrien { "registers", db_show_regs, 0, 0 }, 89148919Sobrien { "breaks", db_listbreak_cmd, 0, 0 }, 90148919Sobrien { "threads", db_show_threads, 0, 0 }, 91148919Sobrien}; 92183054Ssamstruct command_table db_show_table = LIST_HEAD_INITIALIZER(db_show_table); 93148919Sobrien 94183054Ssamstatic struct command db_cmds[] = { 95148919Sobrien { "print", db_print_cmd, 0, 0 }, 96148919Sobrien { "p", db_print_cmd, 0, 0 }, 97148919Sobrien { "examine", db_examine_cmd, CS_SET_DOT, 0 }, 98148919Sobrien { "x", db_examine_cmd, CS_SET_DOT, 0 }, 99148919Sobrien { "search", db_search_cmd, CS_OWN|CS_SET_DOT, 0 }, 100148919Sobrien { "set", db_set_cmd, CS_OWN, 0 }, 101148919Sobrien { "write", db_write_cmd, CS_MORE|CS_SET_DOT, 0 }, 102148919Sobrien { "w", db_write_cmd, CS_MORE|CS_SET_DOT, 0 }, 103148919Sobrien { "delete", db_delete_cmd, 0, 0 }, 104148919Sobrien { "d", db_delete_cmd, 0, 0 }, 105148919Sobrien { "break", db_breakpoint_cmd, 0, 0 }, 106163135Sbde { "b", db_breakpoint_cmd, 0, 0 }, 107148919Sobrien { "dwatch", db_deletewatch_cmd, 0, 0 }, 108148919Sobrien { "watch", db_watchpoint_cmd, CS_MORE,0 }, 109148919Sobrien { "dhwatch", db_deletehwatch_cmd, 0, 0 }, 110148919Sobrien { "hwatch", db_hwatchpoint_cmd, 0, 0 }, 111148919Sobrien { "step", db_single_step_cmd, 0, 0 }, 112148919Sobrien { "s", db_single_step_cmd, 0, 0 }, 113148919Sobrien { "continue", db_continue_cmd, 0, 0 }, 114148919Sobrien { "c", db_continue_cmd, 0, 0 }, 115148919Sobrien { "until", db_trace_until_call_cmd,0, 0 }, 116148919Sobrien { "next", db_trace_until_matching_cmd,0, 0 }, 117148919Sobrien { "match", db_trace_until_matching_cmd,0, 0 }, 118148919Sobrien { "trace", db_stack_trace, CS_OWN, 0 }, 119163135Sbde { "t", db_stack_trace, CS_OWN, 0 }, 120183054Ssam /* XXX alias for all trace */ 121151622Sjhb { "alltrace", db_stack_trace_all, 0, 0 }, 122148919Sobrien { "where", db_stack_trace, CS_OWN, 0 }, 123151622Sjhb { "bt", db_stack_trace, CS_OWN, 0 }, 124148919Sobrien { "call", db_fncall, CS_OWN, 0 }, 125156412Sjhb { "show", 0, 0, &db_show_table }, 126148919Sobrien { "ps", db_ps, 0, 0 }, 127148919Sobrien { "gdb", db_gdb, 0, 0 }, 128163192Sbde { "halt", db_halt, 0, 0 }, 129163192Sbde { "reboot", db_reset, 0, 0 }, 130148919Sobrien { "reset", db_reset, 0, 0 }, 131148919Sobrien { "kill", db_kill, CS_OWN, 0 }, 132148919Sobrien { "watchdog", db_watchdog, 0, 0 }, 133148919Sobrien { "thread", db_set_thread, CS_OWN, 0 }, 134174914Srwatson { "run", db_run_cmd, CS_OWN, 0 }, 135174914Srwatson { "script", db_script_cmd, CS_OWN, 0 }, 136174914Srwatson { "scripts", db_scripts_cmd, 0, 0 }, 137174914Srwatson { "unscript", db_unscript_cmd, CS_OWN, 0 }, 138174910Srwatson { "capture", db_capture_cmd, CS_OWN, 0 }, 139174921Srwatson { "textdump", db_textdump_cmd, CS_OWN, 0 }, 140148919Sobrien}; 141183054Ssamstruct command_table db_cmd_table = LIST_HEAD_INITIALIZER(db_cmd_table); 142148919Sobrien 143148919Sobrienstatic struct command *db_last_command = 0; 144148919Sobrien 1454Srgrimes/* 1464Srgrimes * if 'ed' style: 'dot' is set at start of last item printed, 1474Srgrimes * and '+' points to next line. 1484Srgrimes * Otherwise: 'dot' points to next item, '..' points to last. 1494Srgrimes */ 15012515Sphkstatic boolean_t db_ed_style = TRUE; 1514Srgrimes 1524Srgrimes/* 1534Srgrimes * Utility routine - discard tokens through end-of-line. 1544Srgrimes */ 1554Srgrimesvoid 1564Srgrimesdb_skip_to_eol() 1574Srgrimes{ 1584Srgrimes int t; 1594Srgrimes do { 1604Srgrimes t = db_read_token(); 1614Srgrimes } while (t != tEOL); 1624Srgrimes} 1634Srgrimes 1644Srgrimes/* 1654Srgrimes * Results of command search. 1664Srgrimes */ 1674Srgrimes#define CMD_UNIQUE 0 1684Srgrimes#define CMD_FOUND 1 1694Srgrimes#define CMD_NONE 2 1704Srgrimes#define CMD_AMBIGUOUS 3 1714Srgrimes#define CMD_HELP 4 1724Srgrimes 173156412Sjhbstatic void db_cmd_match(char *name, struct command *cmd, 174156412Sjhb struct command **cmdp, int *resultp); 175156412Sjhbstatic void db_cmd_list(struct command_table *table); 176156412Sjhbstatic int db_cmd_search(char *name, struct command_table *table, 177156412Sjhb struct command **cmdp); 17892756Salfredstatic void db_command(struct command **last_cmdp, 179174914Srwatson struct command_table *cmd_table, int dopager); 18012473Sbde 1814Srgrimes/* 182183054Ssam * Initialize the command lists from the static tables. 183183054Ssam */ 184183054Ssamstatic void 185183054Ssamdb_cmd_init(void) 186183054Ssam{ 187183054Ssam#define N(a) (sizeof(a) / sizeof(a[0])) 188183054Ssam int i; 189183054Ssam 190183054Ssam for (i = 0; i < N(db_cmds); i++) 191183054Ssam db_command_register(&db_cmd_table, &db_cmds[i]); 192183054Ssam for (i = 0; i < N(db_show_cmds); i++) 193183054Ssam db_command_register(&db_show_table, &db_show_cmds[i]); 194183054Ssam for (i = 0; i < N(db_show_all_cmds); i++) 195183054Ssam db_command_register(&db_show_all_table, &db_show_all_cmds[i]); 196183054Ssam#undef N 197183054Ssam} 198183054SsamSYSINIT(_cmd_init, SI_SUB_KLD, SI_ORDER_FIRST, db_cmd_init, NULL); 199183054Ssam 200183054Ssam/* 201183054Ssam * Register a command. 202183054Ssam */ 203183054Ssamvoid 204183054Ssamdb_command_register(struct command_table *list, struct command *cmd) 205183054Ssam{ 206183054Ssam struct command *c, *last; 207183054Ssam 208183054Ssam last = NULL; 209183054Ssam LIST_FOREACH(c, list, next) { 210183054Ssam int n = strcmp(cmd->name, c->name); 211183054Ssam 212183054Ssam /* Check that the command is not already present. */ 213183054Ssam if (n == 0) { 214183054Ssam printf("%s: Warning, the command \"%s\" already exists;" 215183054Ssam " ignoring request\n", __func__, cmd->name); 216183054Ssam return; 217183054Ssam } 218183054Ssam if (n < 0) { 219183054Ssam /* NB: keep list sorted lexicographically */ 220183054Ssam LIST_INSERT_BEFORE(c, cmd, next); 221183054Ssam return; 222183054Ssam } 223183054Ssam last = c; 224183054Ssam } 225183054Ssam if (last == NULL) 226183054Ssam LIST_INSERT_HEAD(list, cmd, next); 227183054Ssam else 228183054Ssam LIST_INSERT_AFTER(last, cmd, next); 229183054Ssam} 230183054Ssam 231183054Ssam/* 232183054Ssam * Remove a command previously registered with db_command_register. 233183054Ssam */ 234183054Ssamvoid 235183054Ssamdb_command_unregister(struct command_table *list, struct command *cmd) 236183054Ssam{ 237183054Ssam struct command *c; 238183054Ssam 239183054Ssam LIST_FOREACH(c, list, next) { 240183054Ssam if (cmd == c) { 241183054Ssam LIST_REMOVE(cmd, next); 242183054Ssam return; 243183054Ssam } 244183054Ssam } 245183054Ssam /* NB: intentionally quiet */ 246183054Ssam} 247183054Ssam 248183054Ssam/* 249156412Sjhb * Helper function to match a single command. 2504Srgrimes */ 251156412Sjhbstatic void 252156412Sjhbdb_cmd_match(name, cmd, cmdp, resultp) 2534Srgrimes char * name; 254156412Sjhb struct command *cmd; 2554Srgrimes struct command **cmdp; /* out */ 256156412Sjhb int * resultp; 2574Srgrimes{ 258156412Sjhb char *lp, *rp; 259156412Sjhb int c; 2604Srgrimes 261156412Sjhb lp = name; 262156412Sjhb rp = cmd->name; 263156412Sjhb while ((c = *lp) == *rp) { 2644Srgrimes if (c == 0) { 265156412Sjhb /* complete match */ 266156412Sjhb *cmdp = cmd; 267156412Sjhb *resultp = CMD_UNIQUE; 268156412Sjhb return; 2694Srgrimes } 2704Srgrimes lp++; 2714Srgrimes rp++; 272156412Sjhb } 273156412Sjhb if (c == 0) { 2744Srgrimes /* end of name, not end of command - 2754Srgrimes partial match */ 276156412Sjhb if (*resultp == CMD_FOUND) { 277156412Sjhb *resultp = CMD_AMBIGUOUS; 278156412Sjhb /* but keep looking for a full match - 279156412Sjhb this lets us match single letters */ 280156412Sjhb } else { 281156412Sjhb *cmdp = cmd; 282156412Sjhb *resultp = CMD_FOUND; 2834Srgrimes } 2844Srgrimes } 285156412Sjhb} 28618296Sbde 287156412Sjhb/* 288156412Sjhb * Search for command prefix. 289156412Sjhb */ 290156412Sjhbstatic int 291156412Sjhbdb_cmd_search(name, table, cmdp) 292156412Sjhb char * name; 293156412Sjhb struct command_table *table; 294156412Sjhb struct command **cmdp; /* out */ 295156412Sjhb{ 296156412Sjhb struct command *cmd; 297156412Sjhb int result = CMD_NONE; 298156412Sjhb 299183054Ssam LIST_FOREACH(cmd, table, next) { 300183054Ssam db_cmd_match(name,cmd,cmdp,&result); 301156412Sjhb if (result == CMD_UNIQUE) 302183054Ssam break; 303156412Sjhb } 304183054Ssam 3054Srgrimes if (result == CMD_NONE) { 306156412Sjhb /* check for 'help' */ 3074Srgrimes if (name[0] == 'h' && name[1] == 'e' 3084Srgrimes && name[2] == 'l' && name[3] == 'p') 3094Srgrimes result = CMD_HELP; 3104Srgrimes } 3114Srgrimes return (result); 3124Srgrimes} 3134Srgrimes 31412515Sphkstatic void 315156412Sjhbdb_cmd_list(table) 316156412Sjhb struct command_table *table; 3174Srgrimes{ 318183054Ssam register struct command *cmd; 3194Srgrimes 320183054Ssam LIST_FOREACH(cmd, table, next) { 321183054Ssam db_printf("%-12s", cmd->name); 322183054Ssam db_end_line(12); 3234Srgrimes } 3244Srgrimes} 3254Srgrimes 32612515Sphkstatic void 327174914Srwatsondb_command(last_cmdp, cmd_table, dopager) 3284Srgrimes struct command **last_cmdp; /* IN_OUT */ 329156412Sjhb struct command_table *cmd_table; 330174914Srwatson int dopager; 3314Srgrimes{ 332183054Ssam struct command *cmd = NULL; 3334Srgrimes int t; 3344Srgrimes char modif[TOK_STRING_SIZE]; 3354Srgrimes db_expr_t addr, count; 336798Swollman boolean_t have_addr = FALSE; 3374Srgrimes int result; 3384Srgrimes 3394Srgrimes t = db_read_token(); 3404Srgrimes if (t == tEOL) { 3414Srgrimes /* empty line repeats last command, at 'next' */ 3424Srgrimes cmd = *last_cmdp; 3434Srgrimes addr = (db_expr_t)db_next; 3444Srgrimes have_addr = FALSE; 3454Srgrimes count = 1; 3464Srgrimes modif[0] = '\0'; 3474Srgrimes } 3484Srgrimes else if (t == tEXCL) { 34910348Sbde db_fncall((db_expr_t)0, (boolean_t)0, (db_expr_t)0, (char *)0); 3504Srgrimes return; 3514Srgrimes } 3524Srgrimes else if (t != tIDENT) { 3534Srgrimes db_printf("?\n"); 3544Srgrimes db_flush_lex(); 3554Srgrimes return; 3564Srgrimes } 3574Srgrimes else { 3584Srgrimes /* 3594Srgrimes * Search for command 3604Srgrimes */ 3614Srgrimes while (cmd_table) { 3624Srgrimes result = db_cmd_search(db_tok_string, 3634Srgrimes cmd_table, 3644Srgrimes &cmd); 3654Srgrimes switch (result) { 3664Srgrimes case CMD_NONE: 3674Srgrimes db_printf("No such command\n"); 3684Srgrimes db_flush_lex(); 3694Srgrimes return; 3704Srgrimes case CMD_AMBIGUOUS: 3714Srgrimes db_printf("Ambiguous\n"); 3724Srgrimes db_flush_lex(); 3734Srgrimes return; 3744Srgrimes case CMD_HELP: 375156412Sjhb db_cmd_list(cmd_table); 3764Srgrimes db_flush_lex(); 3774Srgrimes return; 3784Srgrimes default: 3794Srgrimes break; 3804Srgrimes } 381156412Sjhb if ((cmd_table = cmd->more) != NULL) { 3824Srgrimes t = db_read_token(); 3834Srgrimes if (t != tIDENT) { 384156412Sjhb db_cmd_list(cmd_table); 3854Srgrimes db_flush_lex(); 3864Srgrimes return; 3874Srgrimes } 3884Srgrimes } 3894Srgrimes } 3904Srgrimes 3914Srgrimes if ((cmd->flag & CS_OWN) == 0) { 3924Srgrimes /* 3934Srgrimes * Standard syntax: 3944Srgrimes * command [/modifier] [addr] [,count] 3954Srgrimes */ 3964Srgrimes t = db_read_token(); 3974Srgrimes if (t == tSLASH) { 3984Srgrimes t = db_read_token(); 3994Srgrimes if (t != tIDENT) { 4004Srgrimes db_printf("Bad modifier\n"); 4014Srgrimes db_flush_lex(); 4024Srgrimes return; 4034Srgrimes } 4044Srgrimes db_strcpy(modif, db_tok_string); 4054Srgrimes } 4064Srgrimes else { 4074Srgrimes db_unread_token(t); 4084Srgrimes modif[0] = '\0'; 4094Srgrimes } 4104Srgrimes 4114Srgrimes if (db_expression(&addr)) { 4124Srgrimes db_dot = (db_addr_t) addr; 4134Srgrimes db_last_addr = db_dot; 4144Srgrimes have_addr = TRUE; 4154Srgrimes } 4164Srgrimes else { 4174Srgrimes addr = (db_expr_t) db_dot; 4184Srgrimes have_addr = FALSE; 4194Srgrimes } 4204Srgrimes t = db_read_token(); 4214Srgrimes if (t == tCOMMA) { 4224Srgrimes if (!db_expression(&count)) { 4234Srgrimes db_printf("Count missing\n"); 4244Srgrimes db_flush_lex(); 4254Srgrimes return; 4264Srgrimes } 4274Srgrimes } 4284Srgrimes else { 4294Srgrimes db_unread_token(t); 4304Srgrimes count = -1; 4314Srgrimes } 4324Srgrimes if ((cmd->flag & CS_MORE) == 0) { 4334Srgrimes db_skip_to_eol(); 4344Srgrimes } 4354Srgrimes } 4364Srgrimes } 4374Srgrimes *last_cmdp = cmd; 4384Srgrimes if (cmd != 0) { 4394Srgrimes /* 4404Srgrimes * Execute the command. 4414Srgrimes */ 442174914Srwatson if (dopager) 443174914Srwatson db_enable_pager(); 444174914Srwatson else 445174914Srwatson db_disable_pager(); 4464Srgrimes (*cmd->fcn)(addr, have_addr, count, modif); 447174914Srwatson if (dopager) 448174914Srwatson db_disable_pager(); 4494Srgrimes 4504Srgrimes if (cmd->flag & CS_SET_DOT) { 4514Srgrimes /* 4524Srgrimes * If command changes dot, set dot to 4534Srgrimes * previous address displayed (if 'ed' style). 4544Srgrimes */ 4554Srgrimes if (db_ed_style) { 4564Srgrimes db_dot = db_prev; 4574Srgrimes } 4584Srgrimes else { 4594Srgrimes db_dot = db_next; 4604Srgrimes } 4614Srgrimes } 4624Srgrimes else { 4634Srgrimes /* 4644Srgrimes * If command does not change dot, 4654Srgrimes * set 'next' location to be the same. 4664Srgrimes */ 4674Srgrimes db_next = db_dot; 4684Srgrimes } 4694Srgrimes } 4704Srgrimes} 4714Srgrimes 4724Srgrimes/* 47333296Sbde * At least one non-optional command must be implemented using 47433296Sbde * DB_COMMAND() so that db_cmd_set gets created. Here is one. 47533296Sbde */ 47633296SbdeDB_COMMAND(panic, db_panic) 4776204Sphk{ 478160505Sjhb db_disable_pager(); 4797170Sdg panic("from debugger"); 4806204Sphk} 4816204Sphk 4826204Sphkvoid 4834Srgrimesdb_command_loop() 4844Srgrimes{ 4854Srgrimes /* 4864Srgrimes * Initialize 'prev' and 'next' to dot. 4874Srgrimes */ 4884Srgrimes db_prev = db_dot; 4894Srgrimes db_next = db_dot; 4904Srgrimes 4914Srgrimes db_cmd_loop_done = 0; 4924Srgrimes while (!db_cmd_loop_done) { 4934Srgrimes if (db_print_position() != 0) 4944Srgrimes db_printf("\n"); 4954Srgrimes 4964Srgrimes db_printf("db> "); 4974Srgrimes (void) db_read_line(); 4984Srgrimes 499183054Ssam db_command(&db_last_command, &db_cmd_table, /* dopager */ 1); 5004Srgrimes } 5014Srgrimes} 5024Srgrimes 503174914Srwatson/* 504174914Srwatson * Execute a command on behalf of a script. The caller is responsible for 505174914Srwatson * making sure that the command string is < DB_MAXLINE or it will be 506174914Srwatson * truncated. 507174914Srwatson * 508174914Srwatson * XXXRW: Runs by injecting faked input into DDB input stream; it would be 509174914Srwatson * nicer to use an alternative approach that didn't mess with the previous 510174914Srwatson * command buffer. 511174914Srwatson */ 5124Srgrimesvoid 513174914Srwatsondb_command_script(const char *command) 514174914Srwatson{ 515174914Srwatson db_prev = db_next = db_dot; 516174914Srwatson db_inject_line(command); 517183054Ssam db_command(&db_last_command, &db_cmd_table, /* dopager */ 0); 518174914Srwatson} 519174914Srwatson 520174914Srwatsonvoid 5214Srgrimesdb_error(s) 522103746Smarkm const char *s; 5234Srgrimes{ 5244Srgrimes if (s) 52579884Skris db_printf("%s", s); 5264Srgrimes db_flush_lex(); 527131952Smarcel kdb_reenter(); 5284Srgrimes} 5294Srgrimes 5304Srgrimes 5314Srgrimes/* 5324Srgrimes * Call random function: 5334Srgrimes * !expr(arg,arg,arg) 5344Srgrimes */ 535147745Smarcel 536147745Smarcel/* The generic implementation supports a maximum of 10 arguments. */ 537147745Smarceltypedef db_expr_t __db_f(db_expr_t, db_expr_t, db_expr_t, db_expr_t, 538147745Smarcel db_expr_t, db_expr_t, db_expr_t, db_expr_t, db_expr_t, db_expr_t); 539147745Smarcel 540147745Smarcelstatic __inline int 541147745Smarceldb_fncall_generic(db_expr_t addr, db_expr_t *rv, int nargs, db_expr_t args[]) 542147745Smarcel{ 543147745Smarcel __db_f *f = (__db_f *)addr; 544147745Smarcel 545147745Smarcel if (nargs > 10) { 546147745Smarcel db_printf("Too many arguments (max 10)\n"); 547147745Smarcel return (0); 548147745Smarcel } 549147745Smarcel *rv = (*f)(args[0], args[1], args[2], args[3], args[4], args[5], 550147745Smarcel args[6], args[7], args[8], args[9]); 551147745Smarcel return (1); 552147745Smarcel} 553147745Smarcel 55412515Sphkstatic void 55510348Sbdedb_fncall(dummy1, dummy2, dummy3, dummy4) 55610348Sbde db_expr_t dummy1; 55710348Sbde boolean_t dummy2; 55810348Sbde db_expr_t dummy3; 55910348Sbde char * dummy4; 5604Srgrimes{ 5614Srgrimes db_expr_t fn_addr; 562147745Smarcel db_expr_t args[DB_MAXARGS]; 5634Srgrimes int nargs = 0; 5644Srgrimes db_expr_t retval; 5654Srgrimes int t; 5664Srgrimes 5674Srgrimes if (!db_expression(&fn_addr)) { 5684Srgrimes db_printf("Bad function\n"); 5694Srgrimes db_flush_lex(); 5704Srgrimes return; 5714Srgrimes } 5724Srgrimes 5734Srgrimes t = db_read_token(); 5744Srgrimes if (t == tLPAREN) { 5754Srgrimes if (db_expression(&args[0])) { 5764Srgrimes nargs++; 5774Srgrimes while ((t = db_read_token()) == tCOMMA) { 578147745Smarcel if (nargs == DB_MAXARGS) { 579147745Smarcel db_printf("Too many arguments (max %d)\n", DB_MAXARGS); 5804Srgrimes db_flush_lex(); 5814Srgrimes return; 5824Srgrimes } 5834Srgrimes if (!db_expression(&args[nargs])) { 5844Srgrimes db_printf("Argument missing\n"); 5854Srgrimes db_flush_lex(); 5864Srgrimes return; 5874Srgrimes } 5884Srgrimes nargs++; 5894Srgrimes } 5904Srgrimes db_unread_token(t); 5914Srgrimes } 5924Srgrimes if (db_read_token() != tRPAREN) { 5934Srgrimes db_printf("?\n"); 5944Srgrimes db_flush_lex(); 5954Srgrimes return; 5964Srgrimes } 5974Srgrimes } 5984Srgrimes db_skip_to_eol(); 599160505Sjhb db_disable_pager(); 6004Srgrimes 601147745Smarcel if (DB_CALL(fn_addr, &retval, nargs, args)) 602147745Smarcel db_printf("= %#lr\n", (long)retval); 6034Srgrimes} 60417848Spst 60517848Spststatic void 606163192Sbdedb_halt(db_expr_t dummy, boolean_t dummy2, db_expr_t dummy3, char *dummy4) 607163192Sbde{ 608163192Sbde 609163192Sbde cpu_halt(); 610163192Sbde} 611163192Sbde 612163192Sbdestatic void 61386998Sdddb_kill(dummy1, dummy2, dummy3, dummy4) 61486998Sdd db_expr_t dummy1; 61586998Sdd boolean_t dummy2; 61686998Sdd db_expr_t dummy3; 61786998Sdd char * dummy4; 61886998Sdd{ 61986998Sdd db_expr_t old_radix, pid, sig; 62086998Sdd struct proc *p; 62186998Sdd 62286998Sdd#define DB_ERROR(f) do { db_printf f; db_flush_lex(); goto out; } while (0) 62386998Sdd 62486998Sdd /* 62586998Sdd * PIDs and signal numbers are typically represented in base 62686998Sdd * 10, so make that the default here. It can, of course, be 62786998Sdd * overridden by specifying a prefix. 62886998Sdd */ 62986998Sdd old_radix = db_radix; 63086998Sdd db_radix = 10; 63186998Sdd /* Retrieve arguments. */ 63286998Sdd if (!db_expression(&sig)) 63386998Sdd DB_ERROR(("Missing signal number\n")); 63486998Sdd if (!db_expression(&pid)) 63586998Sdd DB_ERROR(("Missing process ID\n")); 63686998Sdd db_skip_to_eol(); 637176897Srwatson if (sig < 1 || sig > _SIG_MAXSIG) 63886998Sdd DB_ERROR(("Signal number out of range\n")); 63986998Sdd 64086998Sdd /* 64186998Sdd * Find the process in question. allproc_lock is not needed 64286998Sdd * since we're in DDB. 64386998Sdd */ 64486998Sdd /* sx_slock(&allproc_lock); */ 645166074Sdelphij FOREACH_PROC_IN_SYSTEM(p) 64686998Sdd if (p->p_pid == pid) 64786998Sdd break; 64886998Sdd /* sx_sunlock(&allproc_lock); */ 64986998Sdd if (p == NULL) 65089442Smjacob DB_ERROR(("Can't find process with pid %ld\n", (long) pid)); 65186998Sdd 65286998Sdd /* If it's already locked, bail; otherwise, do the deed. */ 65386998Sdd if (PROC_TRYLOCK(p) == 0) 65489442Smjacob DB_ERROR(("Can't lock process with pid %ld\n", (long) pid)); 65586998Sdd else { 65686998Sdd psignal(p, sig); 65786998Sdd PROC_UNLOCK(p); 65886998Sdd } 65986998Sdd 66086998Sddout: 66186998Sdd db_radix = old_radix; 66286998Sdd#undef DB_ERROR 66386998Sdd} 66486998Sdd 66586998Sddstatic void 66685944Speterdb_reset(dummy1, dummy2, dummy3, dummy4) 66785944Speter db_expr_t dummy1; 66885944Speter boolean_t dummy2; 66985944Speter db_expr_t dummy3; 67085944Speter char * dummy4; 67185944Speter{ 67285944Speter 67385944Speter cpu_reset(); 67485944Speter} 675126399Sphk 676126399Sphkstatic void 677126399Sphkdb_watchdog(dummy1, dummy2, dummy3, dummy4) 678126399Sphk db_expr_t dummy1; 679126399Sphk boolean_t dummy2; 680126399Sphk db_expr_t dummy3; 681126399Sphk char * dummy4; 682126399Sphk{ 683126399Sphk int i; 684126399Sphk 685126399Sphk /* 686126399Sphk * XXX: It might make sense to be able to set the watchdog to a 687126399Sphk * XXX: timeout here so that failure or hang as a result of subsequent 688126399Sphk * XXX: ddb commands could be recovered by a reset. 689126399Sphk */ 690126399Sphk 691126399Sphk EVENTHANDLER_INVOKE(watchdog_list, 0, &i); 692126399Sphk} 693132002Smarcel 694132002Smarcelstatic void 695132002Smarceldb_gdb(db_expr_t dummy1, boolean_t dummy2, db_expr_t dummy3, char *dummy4) 696132002Smarcel{ 697132002Smarcel 698132002Smarcel if (kdb_dbbe_select("gdb") != 0) 699132002Smarcel db_printf("The remote GDB backend could not be selected.\n"); 700132002Smarcel else 701132002Smarcel db_printf("Step to enter the remote GDB backend.\n"); 702132002Smarcel} 703132482Smarcel 704132482Smarcelstatic void 705132482Smarceldb_stack_trace(db_expr_t tid, boolean_t hastid, db_expr_t count, char *modif) 706132482Smarcel{ 707132482Smarcel struct thread *td; 708132482Smarcel db_expr_t radix; 709138038Srwatson pid_t pid; 710132482Smarcel int t; 711132482Smarcel 712132482Smarcel /* 713132482Smarcel * We parse our own arguments. We don't like the default radix. 714132482Smarcel */ 715132482Smarcel radix = db_radix; 716132482Smarcel db_radix = 10; 717132482Smarcel hastid = db_expression(&tid); 718132482Smarcel t = db_read_token(); 719132482Smarcel if (t == tCOMMA) { 720132482Smarcel if (!db_expression(&count)) { 721132482Smarcel db_printf("Count missing\n"); 722132482Smarcel db_flush_lex(); 723132482Smarcel return; 724132482Smarcel } 725132482Smarcel } else { 726132482Smarcel db_unread_token(t); 727132482Smarcel count = -1; 728132482Smarcel } 729132482Smarcel db_skip_to_eol(); 730132482Smarcel db_radix = radix; 731132482Smarcel 732132482Smarcel if (hastid) { 733132482Smarcel td = kdb_thr_lookup((lwpid_t)tid); 734132482Smarcel if (td == NULL) 735132482Smarcel td = kdb_thr_from_pid((pid_t)tid); 736132482Smarcel if (td == NULL) { 737132482Smarcel db_printf("Thread %d not found\n", (int)tid); 738132482Smarcel return; 739132482Smarcel } 740132482Smarcel } else 741132482Smarcel td = kdb_thread; 742138038Srwatson if (td->td_proc != NULL) 743138038Srwatson pid = td->td_proc->p_pid; 744138038Srwatson else 745138038Srwatson pid = -1; 746138038Srwatson db_printf("Tracing pid %d tid %ld td %p\n", pid, (long)td->td_tid, td); 747132482Smarcel db_trace_thread(td, count); 748132482Smarcel} 749150819Srwatson 750150819Srwatsonstatic void 751150819Srwatsondb_stack_trace_all(db_expr_t dummy, boolean_t dummy2, db_expr_t dummy3, 752150819Srwatson char *dummy4) 753150819Srwatson{ 754150819Srwatson struct proc *p; 755150819Srwatson struct thread *td; 756163909Skib jmp_buf jb; 757163909Skib void *prev_jb; 758150819Srwatson 759166074Sdelphij FOREACH_PROC_IN_SYSTEM(p) { 760163909Skib prev_jb = kdb_jmpbuf(jb); 761163909Skib if (setjmp(jb) == 0) { 762163909Skib FOREACH_THREAD_IN_PROC(p, td) { 763163909Skib db_printf("\nTracing command %s pid %d tid %ld td %p\n", 764163909Skib p->p_comm, p->p_pid, (long)td->td_tid, td); 765163909Skib db_trace_thread(td, -1); 766163909Skib if (db_pager_quit) { 767163909Skib kdb_jmpbuf(prev_jb); 768163909Skib return; 769163909Skib } 770163909Skib } 771150819Srwatson } 772163909Skib kdb_jmpbuf(prev_jb); 773150819Srwatson } 774150819Srwatson} 775