db_command.c revision 148919
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 148919 2005-08-10 07:08:14Z obrien $"); 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> 4812734Sbde 492056Swollman#include <ddb/ddb.h> 5012473Sbde#include <ddb/db_command.h> 514Srgrimes#include <ddb/db_lex.h> 524Srgrimes#include <ddb/db_output.h> 534Srgrimes 54118990Smarcel#include <machine/cpu.h> 5579418Sjulian#include <machine/setjmp.h> 564Srgrimes 574Srgrimes/* 584Srgrimes * Exported global variables 594Srgrimes */ 604Srgrimesboolean_t db_cmd_loop_done; 6118296Sbdedb_addr_t db_dot; 624Srgrimesdb_addr_t db_last_addr; 634Srgrimesdb_addr_t db_prev; 644Srgrimesdb_addr_t db_next; 654Srgrimes 6678161SpeterSET_DECLARE(db_cmd_set, struct command); 6778161SpeterSET_DECLARE(db_show_cmd_set, struct command); 6878161Speter 6912515Sphkstatic db_cmdfcn_t db_fncall; 70132002Smarcelstatic db_cmdfcn_t db_gdb; 7186998Sddstatic db_cmdfcn_t db_kill; 7285944Speterstatic db_cmdfcn_t db_reset; 73132482Smarcelstatic db_cmdfcn_t db_stack_trace; 74126399Sphkstatic db_cmdfcn_t db_watchdog; 7517848Spst 76148919Sobrien/* 77148919Sobrien * 'show' commands 78148919Sobrien */ 7918296Sbde 80148919Sobrienstatic struct command db_show_all_cmds[] = { 81148919Sobrien { "procs", db_ps, 0, 0 }, 82148919Sobrien { (char *)0 } 83148919Sobrien}; 84148919Sobrien 85148919Sobrienstatic struct command db_show_cmds[] = { 86148919Sobrien { "all", 0, 0, db_show_all_cmds }, 87148919Sobrien { "registers", db_show_regs, 0, 0 }, 88148919Sobrien { "breaks", db_listbreak_cmd, 0, 0 }, 89148919Sobrien { "threads", db_show_threads, 0, 0 }, 90148919Sobrien { (char *)0, } 91148919Sobrien}; 92148919Sobrien 93148919Sobrienstatic struct command db_command_table[] = { 94148919Sobrien { "print", db_print_cmd, 0, 0 }, 95148919Sobrien { "p", db_print_cmd, 0, 0 }, 96148919Sobrien { "examine", db_examine_cmd, CS_SET_DOT, 0 }, 97148919Sobrien { "x", db_examine_cmd, CS_SET_DOT, 0 }, 98148919Sobrien { "search", db_search_cmd, CS_OWN|CS_SET_DOT, 0 }, 99148919Sobrien { "set", db_set_cmd, CS_OWN, 0 }, 100148919Sobrien { "write", db_write_cmd, CS_MORE|CS_SET_DOT, 0 }, 101148919Sobrien { "w", db_write_cmd, CS_MORE|CS_SET_DOT, 0 }, 102148919Sobrien { "delete", db_delete_cmd, 0, 0 }, 103148919Sobrien { "d", db_delete_cmd, 0, 0 }, 104148919Sobrien { "break", db_breakpoint_cmd, 0, 0 }, 105148919Sobrien { "dwatch", db_deletewatch_cmd, 0, 0 }, 106148919Sobrien { "watch", db_watchpoint_cmd, CS_MORE,0 }, 107148919Sobrien { "dhwatch", db_deletehwatch_cmd, 0, 0 }, 108148919Sobrien { "hwatch", db_hwatchpoint_cmd, 0, 0 }, 109148919Sobrien { "step", db_single_step_cmd, 0, 0 }, 110148919Sobrien { "s", db_single_step_cmd, 0, 0 }, 111148919Sobrien { "continue", db_continue_cmd, 0, 0 }, 112148919Sobrien { "c", db_continue_cmd, 0, 0 }, 113148919Sobrien { "until", db_trace_until_call_cmd,0, 0 }, 114148919Sobrien { "next", db_trace_until_matching_cmd,0, 0 }, 115148919Sobrien { "match", db_trace_until_matching_cmd,0, 0 }, 116148919Sobrien { "trace", db_stack_trace, CS_OWN, 0 }, 117148919Sobrien { "where", db_stack_trace, CS_OWN, 0 }, 118148919Sobrien { "call", db_fncall, CS_OWN, 0 }, 119148919Sobrien { "show", 0, 0, db_show_cmds }, 120148919Sobrien { "ps", db_ps, 0, 0 }, 121148919Sobrien { "gdb", db_gdb, 0, 0 }, 122148919Sobrien { "reset", db_reset, 0, 0 }, 123148919Sobrien { "kill", db_kill, CS_OWN, 0 }, 124148919Sobrien { "watchdog", db_watchdog, 0, 0 }, 125148919Sobrien { "thread", db_set_thread, CS_OWN, 0 }, 126148919Sobrien { (char *)0, } 127148919Sobrien}; 128148919Sobrien 129148919Sobrienstatic struct command *db_last_command = 0; 130148919Sobrien 1314Srgrimes/* 1324Srgrimes * if 'ed' style: 'dot' is set at start of last item printed, 1334Srgrimes * and '+' points to next line. 1344Srgrimes * Otherwise: 'dot' points to next item, '..' points to last. 1354Srgrimes */ 13612515Sphkstatic boolean_t db_ed_style = TRUE; 1374Srgrimes 1384Srgrimes/* 1394Srgrimes * Utility routine - discard tokens through end-of-line. 1404Srgrimes */ 1414Srgrimesvoid 1424Srgrimesdb_skip_to_eol() 1434Srgrimes{ 1444Srgrimes int t; 1454Srgrimes do { 1464Srgrimes t = db_read_token(); 1474Srgrimes } while (t != tEOL); 1484Srgrimes} 1494Srgrimes 1504Srgrimes/* 1514Srgrimes * Results of command search. 1524Srgrimes */ 1534Srgrimes#define CMD_UNIQUE 0 1544Srgrimes#define CMD_FOUND 1 1554Srgrimes#define CMD_NONE 2 1564Srgrimes#define CMD_AMBIGUOUS 3 1574Srgrimes#define CMD_HELP 4 1584Srgrimes 15993009Sbdestatic void db_cmd_list(struct command *table, struct command **aux_tablep, 16093009Sbde struct command **aux_tablep_end); 16192756Salfredstatic int db_cmd_search(char *name, struct command *table, 16293009Sbde struct command **aux_tablep, 16393009Sbde struct command **aux_tablep_end, struct command **cmdp); 16492756Salfredstatic void db_command(struct command **last_cmdp, 16593009Sbde struct command *cmd_table, struct command **aux_cmd_tablep, 16693009Sbde struct command **aux_cmd_tablep_end); 16712473Sbde 1684Srgrimes/* 1694Srgrimes * Search for command prefix. 1704Srgrimes */ 17112515Sphkstatic int 17278161Speterdb_cmd_search(name, table, aux_tablep, aux_tablep_end, cmdp) 1734Srgrimes char * name; 1744Srgrimes struct command *table; 17518296Sbde struct command **aux_tablep; 17678161Speter struct command **aux_tablep_end; 1774Srgrimes struct command **cmdp; /* out */ 1784Srgrimes{ 1794Srgrimes struct command *cmd; 18018296Sbde struct command **aux_cmdp; 1814Srgrimes int result = CMD_NONE; 1824Srgrimes 1834Srgrimes for (cmd = table; cmd->name != 0; cmd++) { 1844Srgrimes register char *lp; 1854Srgrimes register char *rp; 1864Srgrimes register int c; 1874Srgrimes 1884Srgrimes lp = name; 1894Srgrimes rp = cmd->name; 1904Srgrimes while ((c = *lp) == *rp) { 1914Srgrimes if (c == 0) { 1924Srgrimes /* complete match */ 1934Srgrimes *cmdp = cmd; 1944Srgrimes return (CMD_UNIQUE); 1954Srgrimes } 1964Srgrimes lp++; 1974Srgrimes rp++; 1984Srgrimes } 1994Srgrimes if (c == 0) { 2004Srgrimes /* end of name, not end of command - 2014Srgrimes partial match */ 2024Srgrimes if (result == CMD_FOUND) { 2034Srgrimes result = CMD_AMBIGUOUS; 2044Srgrimes /* but keep looking for a full match - 2054Srgrimes this lets us match single letters */ 2064Srgrimes } 2074Srgrimes else { 2084Srgrimes *cmdp = cmd; 2094Srgrimes result = CMD_FOUND; 2104Srgrimes } 2114Srgrimes } 2124Srgrimes } 21318296Sbde if (result == CMD_NONE && aux_tablep != 0) 21418296Sbde /* XXX repeat too much code. */ 21578161Speter for (aux_cmdp = aux_tablep; aux_cmdp < aux_tablep_end; aux_cmdp++) { 21618296Sbde register char *lp; 21718296Sbde register char *rp; 21818296Sbde register int c; 21918296Sbde 22018296Sbde lp = name; 22118296Sbde rp = (*aux_cmdp)->name; 22218296Sbde while ((c = *lp) == *rp) { 22318296Sbde if (c == 0) { 22418296Sbde /* complete match */ 22518296Sbde *cmdp = *aux_cmdp; 22618296Sbde return (CMD_UNIQUE); 22718296Sbde } 22818296Sbde lp++; 22918296Sbde rp++; 23018296Sbde } 23118296Sbde if (c == 0) { 23218296Sbde /* end of name, not end of command - 23318296Sbde partial match */ 23418296Sbde if (result == CMD_FOUND) { 23518296Sbde result = CMD_AMBIGUOUS; 23618296Sbde /* but keep looking for a full match - 23718296Sbde this lets us match single letters */ 23818296Sbde } 23918296Sbde else { 24018296Sbde *cmdp = *aux_cmdp; 24118296Sbde result = CMD_FOUND; 24218296Sbde } 24318296Sbde } 24418296Sbde } 2454Srgrimes if (result == CMD_NONE) { 2464Srgrimes /* check for 'help' */ 2474Srgrimes if (name[0] == 'h' && name[1] == 'e' 2484Srgrimes && name[2] == 'l' && name[3] == 'p') 2494Srgrimes result = CMD_HELP; 2504Srgrimes } 2514Srgrimes return (result); 2524Srgrimes} 2534Srgrimes 25412515Sphkstatic void 25578161Speterdb_cmd_list(table, aux_tablep, aux_tablep_end) 2564Srgrimes struct command *table; 25718296Sbde struct command **aux_tablep; 25878161Speter struct command **aux_tablep_end; 2594Srgrimes{ 2604Srgrimes register struct command *cmd; 26118296Sbde register struct command **aux_cmdp; 2624Srgrimes 2634Srgrimes for (cmd = table; cmd->name != 0; cmd++) { 2644Srgrimes db_printf("%-12s", cmd->name); 2654Srgrimes db_end_line(); 2664Srgrimes } 26718296Sbde if (aux_tablep == 0) 26818296Sbde return; 26978161Speter for (aux_cmdp = aux_tablep; aux_cmdp < aux_tablep_end; aux_cmdp++) { 27018296Sbde db_printf("%-12s", (*aux_cmdp)->name); 27118296Sbde db_end_line(); 27218296Sbde } 2734Srgrimes} 2744Srgrimes 27512515Sphkstatic void 27678161Speterdb_command(last_cmdp, cmd_table, aux_cmd_tablep, aux_cmd_tablep_end) 2774Srgrimes struct command **last_cmdp; /* IN_OUT */ 2784Srgrimes struct command *cmd_table; 27918296Sbde struct command **aux_cmd_tablep; 28078161Speter struct command **aux_cmd_tablep_end; 2814Srgrimes{ 2824Srgrimes struct command *cmd; 2834Srgrimes int t; 2844Srgrimes char modif[TOK_STRING_SIZE]; 2854Srgrimes db_expr_t addr, count; 286798Swollman boolean_t have_addr = FALSE; 2874Srgrimes int result; 2884Srgrimes 2894Srgrimes t = db_read_token(); 2904Srgrimes if (t == tEOL) { 2914Srgrimes /* empty line repeats last command, at 'next' */ 2924Srgrimes cmd = *last_cmdp; 2934Srgrimes addr = (db_expr_t)db_next; 2944Srgrimes have_addr = FALSE; 2954Srgrimes count = 1; 2964Srgrimes modif[0] = '\0'; 2974Srgrimes } 2984Srgrimes else if (t == tEXCL) { 29910348Sbde db_fncall((db_expr_t)0, (boolean_t)0, (db_expr_t)0, (char *)0); 3004Srgrimes return; 3014Srgrimes } 3024Srgrimes else if (t != tIDENT) { 3034Srgrimes db_printf("?\n"); 3044Srgrimes db_flush_lex(); 3054Srgrimes return; 3064Srgrimes } 3074Srgrimes else { 3084Srgrimes /* 3094Srgrimes * Search for command 3104Srgrimes */ 3114Srgrimes while (cmd_table) { 3124Srgrimes result = db_cmd_search(db_tok_string, 3134Srgrimes cmd_table, 31418296Sbde aux_cmd_tablep, 31578161Speter aux_cmd_tablep_end, 3164Srgrimes &cmd); 3174Srgrimes switch (result) { 3184Srgrimes case CMD_NONE: 3194Srgrimes db_printf("No such command\n"); 3204Srgrimes db_flush_lex(); 3214Srgrimes return; 3224Srgrimes case CMD_AMBIGUOUS: 3234Srgrimes db_printf("Ambiguous\n"); 3244Srgrimes db_flush_lex(); 3254Srgrimes return; 3264Srgrimes case CMD_HELP: 32778161Speter db_cmd_list(cmd_table, aux_cmd_tablep, aux_cmd_tablep_end); 3284Srgrimes db_flush_lex(); 3294Srgrimes return; 3304Srgrimes default: 3314Srgrimes break; 3324Srgrimes } 3334Srgrimes if ((cmd_table = cmd->more) != 0) { 33418296Sbde /* XXX usually no more aux's. */ 33518296Sbde aux_cmd_tablep = 0; 336104321Sphk if (cmd_table == db_show_cmds) { 33778161Speter aux_cmd_tablep = SET_BEGIN(db_show_cmd_set); 33878161Speter aux_cmd_tablep_end = SET_LIMIT(db_show_cmd_set); 339104321Sphk } 34018296Sbde 3414Srgrimes t = db_read_token(); 3424Srgrimes if (t != tIDENT) { 34378161Speter db_cmd_list(cmd_table, aux_cmd_tablep, aux_cmd_tablep_end); 3444Srgrimes db_flush_lex(); 3454Srgrimes return; 3464Srgrimes } 3474Srgrimes } 3484Srgrimes } 3494Srgrimes 3504Srgrimes if ((cmd->flag & CS_OWN) == 0) { 3514Srgrimes /* 3524Srgrimes * Standard syntax: 3534Srgrimes * command [/modifier] [addr] [,count] 3544Srgrimes */ 3554Srgrimes t = db_read_token(); 3564Srgrimes if (t == tSLASH) { 3574Srgrimes t = db_read_token(); 3584Srgrimes if (t != tIDENT) { 3594Srgrimes db_printf("Bad modifier\n"); 3604Srgrimes db_flush_lex(); 3614Srgrimes return; 3624Srgrimes } 3634Srgrimes db_strcpy(modif, db_tok_string); 3644Srgrimes } 3654Srgrimes else { 3664Srgrimes db_unread_token(t); 3674Srgrimes modif[0] = '\0'; 3684Srgrimes } 3694Srgrimes 3704Srgrimes if (db_expression(&addr)) { 3714Srgrimes db_dot = (db_addr_t) addr; 3724Srgrimes db_last_addr = db_dot; 3734Srgrimes have_addr = TRUE; 3744Srgrimes } 3754Srgrimes else { 3764Srgrimes addr = (db_expr_t) db_dot; 3774Srgrimes have_addr = FALSE; 3784Srgrimes } 3794Srgrimes t = db_read_token(); 3804Srgrimes if (t == tCOMMA) { 3814Srgrimes if (!db_expression(&count)) { 3824Srgrimes db_printf("Count missing\n"); 3834Srgrimes db_flush_lex(); 3844Srgrimes return; 3854Srgrimes } 3864Srgrimes } 3874Srgrimes else { 3884Srgrimes db_unread_token(t); 3894Srgrimes count = -1; 3904Srgrimes } 3914Srgrimes if ((cmd->flag & CS_MORE) == 0) { 3924Srgrimes db_skip_to_eol(); 3934Srgrimes } 3944Srgrimes } 3954Srgrimes } 3964Srgrimes *last_cmdp = cmd; 3974Srgrimes if (cmd != 0) { 3984Srgrimes /* 3994Srgrimes * Execute the command. 4004Srgrimes */ 4014Srgrimes (*cmd->fcn)(addr, have_addr, count, modif); 402118268Sjhb db_setup_paging(NULL, NULL, -1); 4034Srgrimes 4044Srgrimes if (cmd->flag & CS_SET_DOT) { 4054Srgrimes /* 4064Srgrimes * If command changes dot, set dot to 4074Srgrimes * previous address displayed (if 'ed' style). 4084Srgrimes */ 4094Srgrimes if (db_ed_style) { 4104Srgrimes db_dot = db_prev; 4114Srgrimes } 4124Srgrimes else { 4134Srgrimes db_dot = db_next; 4144Srgrimes } 4154Srgrimes } 4164Srgrimes else { 4174Srgrimes /* 4184Srgrimes * If command does not change dot, 4194Srgrimes * set 'next' location to be the same. 4204Srgrimes */ 4214Srgrimes db_next = db_dot; 4224Srgrimes } 4234Srgrimes } 4244Srgrimes} 4254Srgrimes 4264Srgrimes/* 42733296Sbde * At least one non-optional command must be implemented using 42833296Sbde * DB_COMMAND() so that db_cmd_set gets created. Here is one. 42933296Sbde */ 43033296SbdeDB_COMMAND(panic, db_panic) 4316204Sphk{ 4327170Sdg panic("from debugger"); 4336204Sphk} 4346204Sphk 4356204Sphkvoid 4364Srgrimesdb_command_loop() 4374Srgrimes{ 4384Srgrimes /* 4394Srgrimes * Initialize 'prev' and 'next' to dot. 4404Srgrimes */ 4414Srgrimes db_prev = db_dot; 4424Srgrimes db_next = db_dot; 4434Srgrimes 4444Srgrimes db_cmd_loop_done = 0; 4454Srgrimes while (!db_cmd_loop_done) { 4464Srgrimes if (db_print_position() != 0) 4474Srgrimes db_printf("\n"); 4484Srgrimes 4494Srgrimes db_printf("db> "); 4504Srgrimes (void) db_read_line(); 4514Srgrimes 45218296Sbde db_command(&db_last_command, db_command_table, 45378161Speter SET_BEGIN(db_cmd_set), SET_LIMIT(db_cmd_set)); 4544Srgrimes } 4554Srgrimes} 4564Srgrimes 4574Srgrimesvoid 4584Srgrimesdb_error(s) 459103746Smarkm const char *s; 4604Srgrimes{ 4614Srgrimes if (s) 46279884Skris db_printf("%s", s); 4634Srgrimes db_flush_lex(); 464131952Smarcel kdb_reenter(); 4654Srgrimes} 4664Srgrimes 4674Srgrimes 4684Srgrimes/* 4694Srgrimes * Call random function: 4704Srgrimes * !expr(arg,arg,arg) 4714Srgrimes */ 472147745Smarcel 473147745Smarcel/* The generic implementation supports a maximum of 10 arguments. */ 474147745Smarceltypedef db_expr_t __db_f(db_expr_t, db_expr_t, db_expr_t, db_expr_t, 475147745Smarcel db_expr_t, db_expr_t, db_expr_t, db_expr_t, db_expr_t, db_expr_t); 476147745Smarcel 477147745Smarcelstatic __inline int 478147745Smarceldb_fncall_generic(db_expr_t addr, db_expr_t *rv, int nargs, db_expr_t args[]) 479147745Smarcel{ 480147745Smarcel __db_f *f = (__db_f *)addr; 481147745Smarcel 482147745Smarcel if (nargs > 10) { 483147745Smarcel db_printf("Too many arguments (max 10)\n"); 484147745Smarcel return (0); 485147745Smarcel } 486147745Smarcel *rv = (*f)(args[0], args[1], args[2], args[3], args[4], args[5], 487147745Smarcel args[6], args[7], args[8], args[9]); 488147745Smarcel return (1); 489147745Smarcel} 490147745Smarcel 49112515Sphkstatic void 49210348Sbdedb_fncall(dummy1, dummy2, dummy3, dummy4) 49310348Sbde db_expr_t dummy1; 49410348Sbde boolean_t dummy2; 49510348Sbde db_expr_t dummy3; 49610348Sbde char * dummy4; 4974Srgrimes{ 4984Srgrimes db_expr_t fn_addr; 499147745Smarcel db_expr_t args[DB_MAXARGS]; 5004Srgrimes int nargs = 0; 5014Srgrimes db_expr_t retval; 5024Srgrimes int t; 5034Srgrimes 5044Srgrimes if (!db_expression(&fn_addr)) { 5054Srgrimes db_printf("Bad function\n"); 5064Srgrimes db_flush_lex(); 5074Srgrimes return; 5084Srgrimes } 5094Srgrimes 5104Srgrimes t = db_read_token(); 5114Srgrimes if (t == tLPAREN) { 5124Srgrimes if (db_expression(&args[0])) { 5134Srgrimes nargs++; 5144Srgrimes while ((t = db_read_token()) == tCOMMA) { 515147745Smarcel if (nargs == DB_MAXARGS) { 516147745Smarcel db_printf("Too many arguments (max %d)\n", DB_MAXARGS); 5174Srgrimes db_flush_lex(); 5184Srgrimes return; 5194Srgrimes } 5204Srgrimes if (!db_expression(&args[nargs])) { 5214Srgrimes db_printf("Argument missing\n"); 5224Srgrimes db_flush_lex(); 5234Srgrimes return; 5244Srgrimes } 5254Srgrimes nargs++; 5264Srgrimes } 5274Srgrimes db_unread_token(t); 5284Srgrimes } 5294Srgrimes if (db_read_token() != tRPAREN) { 5304Srgrimes db_printf("?\n"); 5314Srgrimes db_flush_lex(); 5324Srgrimes return; 5334Srgrimes } 5344Srgrimes } 5354Srgrimes db_skip_to_eol(); 5364Srgrimes 537147745Smarcel if (DB_CALL(fn_addr, &retval, nargs, args)) 538147745Smarcel db_printf("= %#lr\n", (long)retval); 5394Srgrimes} 54017848Spst 54117848Spststatic void 54286998Sdddb_kill(dummy1, dummy2, dummy3, dummy4) 54386998Sdd db_expr_t dummy1; 54486998Sdd boolean_t dummy2; 54586998Sdd db_expr_t dummy3; 54686998Sdd char * dummy4; 54786998Sdd{ 54886998Sdd db_expr_t old_radix, pid, sig; 54986998Sdd struct proc *p; 55086998Sdd 55186998Sdd#define DB_ERROR(f) do { db_printf f; db_flush_lex(); goto out; } while (0) 55286998Sdd 55386998Sdd /* 55486998Sdd * PIDs and signal numbers are typically represented in base 55586998Sdd * 10, so make that the default here. It can, of course, be 55686998Sdd * overridden by specifying a prefix. 55786998Sdd */ 55886998Sdd old_radix = db_radix; 55986998Sdd db_radix = 10; 56086998Sdd /* Retrieve arguments. */ 56186998Sdd if (!db_expression(&sig)) 56286998Sdd DB_ERROR(("Missing signal number\n")); 56386998Sdd if (!db_expression(&pid)) 56486998Sdd DB_ERROR(("Missing process ID\n")); 56586998Sdd db_skip_to_eol(); 56686998Sdd if (sig < 0 || sig > _SIG_MAXSIG) 56786998Sdd DB_ERROR(("Signal number out of range\n")); 56886998Sdd 56986998Sdd /* 57086998Sdd * Find the process in question. allproc_lock is not needed 57186998Sdd * since we're in DDB. 57286998Sdd */ 57386998Sdd /* sx_slock(&allproc_lock); */ 57486998Sdd LIST_FOREACH(p, &allproc, p_list) 57586998Sdd if (p->p_pid == pid) 57686998Sdd break; 57786998Sdd /* sx_sunlock(&allproc_lock); */ 57886998Sdd if (p == NULL) 57989442Smjacob DB_ERROR(("Can't find process with pid %ld\n", (long) pid)); 58086998Sdd 58186998Sdd /* If it's already locked, bail; otherwise, do the deed. */ 58286998Sdd if (PROC_TRYLOCK(p) == 0) 58389442Smjacob DB_ERROR(("Can't lock process with pid %ld\n", (long) pid)); 58486998Sdd else { 58586998Sdd psignal(p, sig); 58686998Sdd PROC_UNLOCK(p); 58786998Sdd } 58886998Sdd 58986998Sddout: 59086998Sdd db_radix = old_radix; 59186998Sdd#undef DB_ERROR 59286998Sdd} 59386998Sdd 59486998Sddstatic void 59585944Speterdb_reset(dummy1, dummy2, dummy3, dummy4) 59685944Speter db_expr_t dummy1; 59785944Speter boolean_t dummy2; 59885944Speter db_expr_t dummy3; 59985944Speter char * dummy4; 60085944Speter{ 60185944Speter 60285944Speter cpu_reset(); 60385944Speter} 604126399Sphk 605126399Sphkstatic void 606126399Sphkdb_watchdog(dummy1, dummy2, dummy3, dummy4) 607126399Sphk db_expr_t dummy1; 608126399Sphk boolean_t dummy2; 609126399Sphk db_expr_t dummy3; 610126399Sphk char * dummy4; 611126399Sphk{ 612126399Sphk int i; 613126399Sphk 614126399Sphk /* 615126399Sphk * XXX: It might make sense to be able to set the watchdog to a 616126399Sphk * XXX: timeout here so that failure or hang as a result of subsequent 617126399Sphk * XXX: ddb commands could be recovered by a reset. 618126399Sphk */ 619126399Sphk 620126399Sphk EVENTHANDLER_INVOKE(watchdog_list, 0, &i); 621126399Sphk} 622132002Smarcel 623132002Smarcelstatic void 624132002Smarceldb_gdb(db_expr_t dummy1, boolean_t dummy2, db_expr_t dummy3, char *dummy4) 625132002Smarcel{ 626132002Smarcel 627132002Smarcel if (kdb_dbbe_select("gdb") != 0) 628132002Smarcel db_printf("The remote GDB backend could not be selected.\n"); 629132002Smarcel else 630132002Smarcel db_printf("Step to enter the remote GDB backend.\n"); 631132002Smarcel} 632132482Smarcel 633132482Smarcelstatic void 634132482Smarceldb_stack_trace(db_expr_t tid, boolean_t hastid, db_expr_t count, char *modif) 635132482Smarcel{ 636132482Smarcel struct thread *td; 637132482Smarcel db_expr_t radix; 638138038Srwatson pid_t pid; 639132482Smarcel int t; 640132482Smarcel 641132482Smarcel /* 642132482Smarcel * We parse our own arguments. We don't like the default radix. 643132482Smarcel */ 644132482Smarcel radix = db_radix; 645132482Smarcel db_radix = 10; 646132482Smarcel hastid = db_expression(&tid); 647132482Smarcel t = db_read_token(); 648132482Smarcel if (t == tCOMMA) { 649132482Smarcel if (!db_expression(&count)) { 650132482Smarcel db_printf("Count missing\n"); 651132482Smarcel db_flush_lex(); 652132482Smarcel return; 653132482Smarcel } 654132482Smarcel } else { 655132482Smarcel db_unread_token(t); 656132482Smarcel count = -1; 657132482Smarcel } 658132482Smarcel db_skip_to_eol(); 659132482Smarcel db_radix = radix; 660132482Smarcel 661132482Smarcel if (hastid) { 662132482Smarcel td = kdb_thr_lookup((lwpid_t)tid); 663132482Smarcel if (td == NULL) 664132482Smarcel td = kdb_thr_from_pid((pid_t)tid); 665132482Smarcel if (td == NULL) { 666132482Smarcel db_printf("Thread %d not found\n", (int)tid); 667132482Smarcel return; 668132482Smarcel } 669132482Smarcel } else 670132482Smarcel td = kdb_thread; 671138038Srwatson if (td->td_proc != NULL) 672138038Srwatson pid = td->td_proc->p_pid; 673138038Srwatson else 674138038Srwatson pid = -1; 675138038Srwatson db_printf("Tracing pid %d tid %ld td %p\n", pid, (long)td->td_tid, td); 676132482Smarcel db_trace_thread(td, count); 677132482Smarcel} 678