db_command.c revision 166074
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 166074 2007-01-17 15:05:52Z delphij $"); 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; 71163192Sbdestatic db_cmdfcn_t db_halt; 7286998Sddstatic db_cmdfcn_t db_kill; 7385944Speterstatic db_cmdfcn_t db_reset; 74132482Smarcelstatic db_cmdfcn_t db_stack_trace; 75150819Srwatsonstatic db_cmdfcn_t db_stack_trace_all; 76126399Sphkstatic db_cmdfcn_t db_watchdog; 7717848Spst 78148919Sobrien/* 79148919Sobrien * 'show' commands 80148919Sobrien */ 8118296Sbde 82148919Sobrienstatic struct command db_show_all_cmds[] = { 83148919Sobrien { "procs", db_ps, 0, 0 }, 84148919Sobrien { (char *)0 } 85148919Sobrien}; 86148919Sobrien 87156412Sjhbstatic struct command_table db_show_all_table = { 88156412Sjhb db_show_all_cmds 89156412Sjhb}; 90156412Sjhb 91148919Sobrienstatic struct command db_show_cmds[] = { 92156412Sjhb { "all", 0, 0, &db_show_all_table }, 93148919Sobrien { "registers", db_show_regs, 0, 0 }, 94148919Sobrien { "breaks", db_listbreak_cmd, 0, 0 }, 95148919Sobrien { "threads", db_show_threads, 0, 0 }, 96148919Sobrien { (char *)0, } 97148919Sobrien}; 98148919Sobrien 99156412Sjhbstatic struct command_table db_show_table = { 100156412Sjhb db_show_cmds, 101156412Sjhb SET_BEGIN(db_show_cmd_set), 102156412Sjhb SET_LIMIT(db_show_cmd_set) 103156412Sjhb}; 104156412Sjhb 105156412Sjhbstatic struct command db_commands[] = { 106148919Sobrien { "print", db_print_cmd, 0, 0 }, 107148919Sobrien { "p", db_print_cmd, 0, 0 }, 108148919Sobrien { "examine", db_examine_cmd, CS_SET_DOT, 0 }, 109148919Sobrien { "x", db_examine_cmd, CS_SET_DOT, 0 }, 110148919Sobrien { "search", db_search_cmd, CS_OWN|CS_SET_DOT, 0 }, 111148919Sobrien { "set", db_set_cmd, CS_OWN, 0 }, 112148919Sobrien { "write", db_write_cmd, CS_MORE|CS_SET_DOT, 0 }, 113148919Sobrien { "w", db_write_cmd, CS_MORE|CS_SET_DOT, 0 }, 114148919Sobrien { "delete", db_delete_cmd, 0, 0 }, 115148919Sobrien { "d", db_delete_cmd, 0, 0 }, 116148919Sobrien { "break", db_breakpoint_cmd, 0, 0 }, 117163135Sbde { "b", db_breakpoint_cmd, 0, 0 }, 118148919Sobrien { "dwatch", db_deletewatch_cmd, 0, 0 }, 119148919Sobrien { "watch", db_watchpoint_cmd, CS_MORE,0 }, 120148919Sobrien { "dhwatch", db_deletehwatch_cmd, 0, 0 }, 121148919Sobrien { "hwatch", db_hwatchpoint_cmd, 0, 0 }, 122148919Sobrien { "step", db_single_step_cmd, 0, 0 }, 123148919Sobrien { "s", db_single_step_cmd, 0, 0 }, 124148919Sobrien { "continue", db_continue_cmd, 0, 0 }, 125148919Sobrien { "c", db_continue_cmd, 0, 0 }, 126148919Sobrien { "until", db_trace_until_call_cmd,0, 0 }, 127148919Sobrien { "next", db_trace_until_matching_cmd,0, 0 }, 128148919Sobrien { "match", db_trace_until_matching_cmd,0, 0 }, 129148919Sobrien { "trace", db_stack_trace, CS_OWN, 0 }, 130163135Sbde { "t", db_stack_trace, CS_OWN, 0 }, 131151622Sjhb { "alltrace", db_stack_trace_all, 0, 0 }, 132148919Sobrien { "where", db_stack_trace, CS_OWN, 0 }, 133151622Sjhb { "bt", db_stack_trace, CS_OWN, 0 }, 134148919Sobrien { "call", db_fncall, CS_OWN, 0 }, 135156412Sjhb { "show", 0, 0, &db_show_table }, 136148919Sobrien { "ps", db_ps, 0, 0 }, 137148919Sobrien { "gdb", db_gdb, 0, 0 }, 138163192Sbde { "halt", db_halt, 0, 0 }, 139163192Sbde { "reboot", db_reset, 0, 0 }, 140148919Sobrien { "reset", db_reset, 0, 0 }, 141148919Sobrien { "kill", db_kill, CS_OWN, 0 }, 142148919Sobrien { "watchdog", db_watchdog, 0, 0 }, 143148919Sobrien { "thread", db_set_thread, CS_OWN, 0 }, 144148919Sobrien { (char *)0, } 145148919Sobrien}; 146148919Sobrien 147156412Sjhbstatic struct command_table db_command_table = { 148156412Sjhb db_commands, 149156412Sjhb SET_BEGIN(db_cmd_set), 150156412Sjhb SET_LIMIT(db_cmd_set) 151156412Sjhb}; 152156412Sjhb 153148919Sobrienstatic struct command *db_last_command = 0; 154148919Sobrien 1554Srgrimes/* 1564Srgrimes * if 'ed' style: 'dot' is set at start of last item printed, 1574Srgrimes * and '+' points to next line. 1584Srgrimes * Otherwise: 'dot' points to next item, '..' points to last. 1594Srgrimes */ 16012515Sphkstatic boolean_t db_ed_style = TRUE; 1614Srgrimes 1624Srgrimes/* 1634Srgrimes * Utility routine - discard tokens through end-of-line. 1644Srgrimes */ 1654Srgrimesvoid 1664Srgrimesdb_skip_to_eol() 1674Srgrimes{ 1684Srgrimes int t; 1694Srgrimes do { 1704Srgrimes t = db_read_token(); 1714Srgrimes } while (t != tEOL); 1724Srgrimes} 1734Srgrimes 1744Srgrimes/* 1754Srgrimes * Results of command search. 1764Srgrimes */ 1774Srgrimes#define CMD_UNIQUE 0 1784Srgrimes#define CMD_FOUND 1 1794Srgrimes#define CMD_NONE 2 1804Srgrimes#define CMD_AMBIGUOUS 3 1814Srgrimes#define CMD_HELP 4 1824Srgrimes 183156412Sjhbstatic void db_cmd_match(char *name, struct command *cmd, 184156412Sjhb struct command **cmdp, int *resultp); 185156412Sjhbstatic void db_cmd_list(struct command_table *table); 186156412Sjhbstatic int db_cmd_search(char *name, struct command_table *table, 187156412Sjhb struct command **cmdp); 18892756Salfredstatic void db_command(struct command **last_cmdp, 189156412Sjhb struct command_table *cmd_table); 19012473Sbde 1914Srgrimes/* 192156412Sjhb * Helper function to match a single command. 1934Srgrimes */ 194156412Sjhbstatic void 195156412Sjhbdb_cmd_match(name, cmd, cmdp, resultp) 1964Srgrimes char * name; 197156412Sjhb struct command *cmd; 1984Srgrimes struct command **cmdp; /* out */ 199156412Sjhb int * resultp; 2004Srgrimes{ 201156412Sjhb char *lp, *rp; 202156412Sjhb int c; 2034Srgrimes 204156412Sjhb lp = name; 205156412Sjhb rp = cmd->name; 206156412Sjhb while ((c = *lp) == *rp) { 2074Srgrimes if (c == 0) { 208156412Sjhb /* complete match */ 209156412Sjhb *cmdp = cmd; 210156412Sjhb *resultp = CMD_UNIQUE; 211156412Sjhb return; 2124Srgrimes } 2134Srgrimes lp++; 2144Srgrimes rp++; 215156412Sjhb } 216156412Sjhb if (c == 0) { 2174Srgrimes /* end of name, not end of command - 2184Srgrimes partial match */ 219156412Sjhb if (*resultp == CMD_FOUND) { 220156412Sjhb *resultp = CMD_AMBIGUOUS; 221156412Sjhb /* but keep looking for a full match - 222156412Sjhb this lets us match single letters */ 223156412Sjhb } else { 224156412Sjhb *cmdp = cmd; 225156412Sjhb *resultp = CMD_FOUND; 2264Srgrimes } 2274Srgrimes } 228156412Sjhb} 22918296Sbde 230156412Sjhb/* 231156412Sjhb * Search for command prefix. 232156412Sjhb */ 233156412Sjhbstatic int 234156412Sjhbdb_cmd_search(name, table, cmdp) 235156412Sjhb char * name; 236156412Sjhb struct command_table *table; 237156412Sjhb struct command **cmdp; /* out */ 238156412Sjhb{ 239156412Sjhb struct command *cmd; 240156412Sjhb struct command **aux_cmdp; 241156412Sjhb int result = CMD_NONE; 242156412Sjhb 243156412Sjhb for (cmd = table->table; cmd->name != 0; cmd++) { 244156412Sjhb db_cmd_match(name, cmd, cmdp, &result); 245156412Sjhb if (result == CMD_UNIQUE) 24618296Sbde return (CMD_UNIQUE); 247156412Sjhb } 248156412Sjhb if (table->aux_tablep != NULL) 249156412Sjhb for (aux_cmdp = table->aux_tablep; 250156412Sjhb aux_cmdp < table->aux_tablep_end; 251156412Sjhb aux_cmdp++) { 252156412Sjhb db_cmd_match(name, *aux_cmdp, cmdp, &result); 253156412Sjhb if (result == CMD_UNIQUE) 254156412Sjhb return (CMD_UNIQUE); 25518296Sbde } 2564Srgrimes if (result == CMD_NONE) { 257156412Sjhb /* check for 'help' */ 2584Srgrimes if (name[0] == 'h' && name[1] == 'e' 2594Srgrimes && name[2] == 'l' && name[3] == 'p') 2604Srgrimes result = CMD_HELP; 2614Srgrimes } 2624Srgrimes return (result); 2634Srgrimes} 2644Srgrimes 26512515Sphkstatic void 266156412Sjhbdb_cmd_list(table) 267156412Sjhb struct command_table *table; 2684Srgrimes{ 2694Srgrimes register struct command *cmd; 27018296Sbde register struct command **aux_cmdp; 2714Srgrimes 272156412Sjhb for (cmd = table->table; cmd->name != 0; cmd++) { 2734Srgrimes db_printf("%-12s", cmd->name); 274163134Sbde db_end_line(12); 2754Srgrimes } 276156412Sjhb if (table->aux_tablep == NULL) 27718296Sbde return; 278156412Sjhb for (aux_cmdp = table->aux_tablep; aux_cmdp < table->aux_tablep_end; 279156412Sjhb aux_cmdp++) { 28018296Sbde db_printf("%-12s", (*aux_cmdp)->name); 281163134Sbde db_end_line(12); 28218296Sbde } 2834Srgrimes} 2844Srgrimes 28512515Sphkstatic void 286156412Sjhbdb_command(last_cmdp, cmd_table) 2874Srgrimes struct command **last_cmdp; /* IN_OUT */ 288156412Sjhb struct command_table *cmd_table; 2894Srgrimes{ 2904Srgrimes struct command *cmd; 2914Srgrimes int t; 2924Srgrimes char modif[TOK_STRING_SIZE]; 2934Srgrimes db_expr_t addr, count; 294798Swollman boolean_t have_addr = FALSE; 2954Srgrimes int result; 2964Srgrimes 2974Srgrimes t = db_read_token(); 2984Srgrimes if (t == tEOL) { 2994Srgrimes /* empty line repeats last command, at 'next' */ 3004Srgrimes cmd = *last_cmdp; 3014Srgrimes addr = (db_expr_t)db_next; 3024Srgrimes have_addr = FALSE; 3034Srgrimes count = 1; 3044Srgrimes modif[0] = '\0'; 3054Srgrimes } 3064Srgrimes else if (t == tEXCL) { 30710348Sbde db_fncall((db_expr_t)0, (boolean_t)0, (db_expr_t)0, (char *)0); 3084Srgrimes return; 3094Srgrimes } 3104Srgrimes else if (t != tIDENT) { 3114Srgrimes db_printf("?\n"); 3124Srgrimes db_flush_lex(); 3134Srgrimes return; 3144Srgrimes } 3154Srgrimes else { 3164Srgrimes /* 3174Srgrimes * Search for command 3184Srgrimes */ 3194Srgrimes while (cmd_table) { 3204Srgrimes result = db_cmd_search(db_tok_string, 3214Srgrimes cmd_table, 3224Srgrimes &cmd); 3234Srgrimes switch (result) { 3244Srgrimes case CMD_NONE: 3254Srgrimes db_printf("No such command\n"); 3264Srgrimes db_flush_lex(); 3274Srgrimes return; 3284Srgrimes case CMD_AMBIGUOUS: 3294Srgrimes db_printf("Ambiguous\n"); 3304Srgrimes db_flush_lex(); 3314Srgrimes return; 3324Srgrimes case CMD_HELP: 333156412Sjhb db_cmd_list(cmd_table); 3344Srgrimes db_flush_lex(); 3354Srgrimes return; 3364Srgrimes default: 3374Srgrimes break; 3384Srgrimes } 339156412Sjhb if ((cmd_table = cmd->more) != NULL) { 3404Srgrimes t = db_read_token(); 3414Srgrimes if (t != tIDENT) { 342156412Sjhb db_cmd_list(cmd_table); 3434Srgrimes db_flush_lex(); 3444Srgrimes return; 3454Srgrimes } 3464Srgrimes } 3474Srgrimes } 3484Srgrimes 3494Srgrimes if ((cmd->flag & CS_OWN) == 0) { 3504Srgrimes /* 3514Srgrimes * Standard syntax: 3524Srgrimes * command [/modifier] [addr] [,count] 3534Srgrimes */ 3544Srgrimes t = db_read_token(); 3554Srgrimes if (t == tSLASH) { 3564Srgrimes t = db_read_token(); 3574Srgrimes if (t != tIDENT) { 3584Srgrimes db_printf("Bad modifier\n"); 3594Srgrimes db_flush_lex(); 3604Srgrimes return; 3614Srgrimes } 3624Srgrimes db_strcpy(modif, db_tok_string); 3634Srgrimes } 3644Srgrimes else { 3654Srgrimes db_unread_token(t); 3664Srgrimes modif[0] = '\0'; 3674Srgrimes } 3684Srgrimes 3694Srgrimes if (db_expression(&addr)) { 3704Srgrimes db_dot = (db_addr_t) addr; 3714Srgrimes db_last_addr = db_dot; 3724Srgrimes have_addr = TRUE; 3734Srgrimes } 3744Srgrimes else { 3754Srgrimes addr = (db_expr_t) db_dot; 3764Srgrimes have_addr = FALSE; 3774Srgrimes } 3784Srgrimes t = db_read_token(); 3794Srgrimes if (t == tCOMMA) { 3804Srgrimes if (!db_expression(&count)) { 3814Srgrimes db_printf("Count missing\n"); 3824Srgrimes db_flush_lex(); 3834Srgrimes return; 3844Srgrimes } 3854Srgrimes } 3864Srgrimes else { 3874Srgrimes db_unread_token(t); 3884Srgrimes count = -1; 3894Srgrimes } 3904Srgrimes if ((cmd->flag & CS_MORE) == 0) { 3914Srgrimes db_skip_to_eol(); 3924Srgrimes } 3934Srgrimes } 3944Srgrimes } 3954Srgrimes *last_cmdp = cmd; 3964Srgrimes if (cmd != 0) { 3974Srgrimes /* 3984Srgrimes * Execute the command. 3994Srgrimes */ 400160312Sjhb db_enable_pager(); 4014Srgrimes (*cmd->fcn)(addr, have_addr, count, modif); 402160312Sjhb db_disable_pager(); 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{ 432160505Sjhb db_disable_pager(); 4337170Sdg panic("from debugger"); 4346204Sphk} 4356204Sphk 4366204Sphkvoid 4374Srgrimesdb_command_loop() 4384Srgrimes{ 4394Srgrimes /* 4404Srgrimes * Initialize 'prev' and 'next' to dot. 4414Srgrimes */ 4424Srgrimes db_prev = db_dot; 4434Srgrimes db_next = db_dot; 4444Srgrimes 4454Srgrimes db_cmd_loop_done = 0; 4464Srgrimes while (!db_cmd_loop_done) { 4474Srgrimes if (db_print_position() != 0) 4484Srgrimes db_printf("\n"); 4494Srgrimes 4504Srgrimes db_printf("db> "); 4514Srgrimes (void) db_read_line(); 4524Srgrimes 453156412Sjhb db_command(&db_last_command, &db_command_table); 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(); 536160505Sjhb db_disable_pager(); 5374Srgrimes 538147745Smarcel if (DB_CALL(fn_addr, &retval, nargs, args)) 539147745Smarcel db_printf("= %#lr\n", (long)retval); 5404Srgrimes} 54117848Spst 54217848Spststatic void 543163192Sbdedb_halt(db_expr_t dummy, boolean_t dummy2, db_expr_t dummy3, char *dummy4) 544163192Sbde{ 545163192Sbde 546163192Sbde cpu_halt(); 547163192Sbde} 548163192Sbde 549163192Sbdestatic void 55086998Sdddb_kill(dummy1, dummy2, dummy3, dummy4) 55186998Sdd db_expr_t dummy1; 55286998Sdd boolean_t dummy2; 55386998Sdd db_expr_t dummy3; 55486998Sdd char * dummy4; 55586998Sdd{ 55686998Sdd db_expr_t old_radix, pid, sig; 55786998Sdd struct proc *p; 55886998Sdd 55986998Sdd#define DB_ERROR(f) do { db_printf f; db_flush_lex(); goto out; } while (0) 56086998Sdd 56186998Sdd /* 56286998Sdd * PIDs and signal numbers are typically represented in base 56386998Sdd * 10, so make that the default here. It can, of course, be 56486998Sdd * overridden by specifying a prefix. 56586998Sdd */ 56686998Sdd old_radix = db_radix; 56786998Sdd db_radix = 10; 56886998Sdd /* Retrieve arguments. */ 56986998Sdd if (!db_expression(&sig)) 57086998Sdd DB_ERROR(("Missing signal number\n")); 57186998Sdd if (!db_expression(&pid)) 57286998Sdd DB_ERROR(("Missing process ID\n")); 57386998Sdd db_skip_to_eol(); 57486998Sdd if (sig < 0 || sig > _SIG_MAXSIG) 57586998Sdd DB_ERROR(("Signal number out of range\n")); 57686998Sdd 57786998Sdd /* 57886998Sdd * Find the process in question. allproc_lock is not needed 57986998Sdd * since we're in DDB. 58086998Sdd */ 58186998Sdd /* sx_slock(&allproc_lock); */ 582166074Sdelphij FOREACH_PROC_IN_SYSTEM(p) 58386998Sdd if (p->p_pid == pid) 58486998Sdd break; 58586998Sdd /* sx_sunlock(&allproc_lock); */ 58686998Sdd if (p == NULL) 58789442Smjacob DB_ERROR(("Can't find process with pid %ld\n", (long) pid)); 58886998Sdd 58986998Sdd /* If it's already locked, bail; otherwise, do the deed. */ 59086998Sdd if (PROC_TRYLOCK(p) == 0) 59189442Smjacob DB_ERROR(("Can't lock process with pid %ld\n", (long) pid)); 59286998Sdd else { 59386998Sdd psignal(p, sig); 59486998Sdd PROC_UNLOCK(p); 59586998Sdd } 59686998Sdd 59786998Sddout: 59886998Sdd db_radix = old_radix; 59986998Sdd#undef DB_ERROR 60086998Sdd} 60186998Sdd 60286998Sddstatic void 60385944Speterdb_reset(dummy1, dummy2, dummy3, dummy4) 60485944Speter db_expr_t dummy1; 60585944Speter boolean_t dummy2; 60685944Speter db_expr_t dummy3; 60785944Speter char * dummy4; 60885944Speter{ 60985944Speter 61085944Speter cpu_reset(); 61185944Speter} 612126399Sphk 613126399Sphkstatic void 614126399Sphkdb_watchdog(dummy1, dummy2, dummy3, dummy4) 615126399Sphk db_expr_t dummy1; 616126399Sphk boolean_t dummy2; 617126399Sphk db_expr_t dummy3; 618126399Sphk char * dummy4; 619126399Sphk{ 620126399Sphk int i; 621126399Sphk 622126399Sphk /* 623126399Sphk * XXX: It might make sense to be able to set the watchdog to a 624126399Sphk * XXX: timeout here so that failure or hang as a result of subsequent 625126399Sphk * XXX: ddb commands could be recovered by a reset. 626126399Sphk */ 627126399Sphk 628126399Sphk EVENTHANDLER_INVOKE(watchdog_list, 0, &i); 629126399Sphk} 630132002Smarcel 631132002Smarcelstatic void 632132002Smarceldb_gdb(db_expr_t dummy1, boolean_t dummy2, db_expr_t dummy3, char *dummy4) 633132002Smarcel{ 634132002Smarcel 635132002Smarcel if (kdb_dbbe_select("gdb") != 0) 636132002Smarcel db_printf("The remote GDB backend could not be selected.\n"); 637132002Smarcel else 638132002Smarcel db_printf("Step to enter the remote GDB backend.\n"); 639132002Smarcel} 640132482Smarcel 641132482Smarcelstatic void 642132482Smarceldb_stack_trace(db_expr_t tid, boolean_t hastid, db_expr_t count, char *modif) 643132482Smarcel{ 644132482Smarcel struct thread *td; 645132482Smarcel db_expr_t radix; 646138038Srwatson pid_t pid; 647132482Smarcel int t; 648132482Smarcel 649132482Smarcel /* 650132482Smarcel * We parse our own arguments. We don't like the default radix. 651132482Smarcel */ 652132482Smarcel radix = db_radix; 653132482Smarcel db_radix = 10; 654132482Smarcel hastid = db_expression(&tid); 655132482Smarcel t = db_read_token(); 656132482Smarcel if (t == tCOMMA) { 657132482Smarcel if (!db_expression(&count)) { 658132482Smarcel db_printf("Count missing\n"); 659132482Smarcel db_flush_lex(); 660132482Smarcel return; 661132482Smarcel } 662132482Smarcel } else { 663132482Smarcel db_unread_token(t); 664132482Smarcel count = -1; 665132482Smarcel } 666132482Smarcel db_skip_to_eol(); 667132482Smarcel db_radix = radix; 668132482Smarcel 669132482Smarcel if (hastid) { 670132482Smarcel td = kdb_thr_lookup((lwpid_t)tid); 671132482Smarcel if (td == NULL) 672132482Smarcel td = kdb_thr_from_pid((pid_t)tid); 673132482Smarcel if (td == NULL) { 674132482Smarcel db_printf("Thread %d not found\n", (int)tid); 675132482Smarcel return; 676132482Smarcel } 677132482Smarcel } else 678132482Smarcel td = kdb_thread; 679138038Srwatson if (td->td_proc != NULL) 680138038Srwatson pid = td->td_proc->p_pid; 681138038Srwatson else 682138038Srwatson pid = -1; 683138038Srwatson db_printf("Tracing pid %d tid %ld td %p\n", pid, (long)td->td_tid, td); 684132482Smarcel db_trace_thread(td, count); 685132482Smarcel} 686150819Srwatson 687150819Srwatsonstatic void 688150819Srwatsondb_stack_trace_all(db_expr_t dummy, boolean_t dummy2, db_expr_t dummy3, 689150819Srwatson char *dummy4) 690150819Srwatson{ 691150819Srwatson struct proc *p; 692150819Srwatson struct thread *td; 693163909Skib jmp_buf jb; 694163909Skib void *prev_jb; 695150819Srwatson 696166074Sdelphij FOREACH_PROC_IN_SYSTEM(p) { 697163909Skib prev_jb = kdb_jmpbuf(jb); 698163909Skib if (setjmp(jb) == 0) { 699163909Skib FOREACH_THREAD_IN_PROC(p, td) { 700163909Skib db_printf("\nTracing command %s pid %d tid %ld td %p\n", 701163909Skib p->p_comm, p->p_pid, (long)td->td_tid, td); 702163909Skib db_trace_thread(td, -1); 703163909Skib if (db_pager_quit) { 704163909Skib kdb_jmpbuf(prev_jb); 705163909Skib return; 706163909Skib } 707163909Skib } 708150819Srwatson } 709163909Skib kdb_jmpbuf(prev_jb); 710150819Srwatson } 711150819Srwatson} 712