db_command.c revision 199355
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 199355 2009-11-17 11:39:15Z kib $"); 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 */ 184183360Sjhbvoid 185183360Sjhbdb_command_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} 198183054Ssam 199183054Ssam/* 200183054Ssam * Register a command. 201183054Ssam */ 202183054Ssamvoid 203183054Ssamdb_command_register(struct command_table *list, struct command *cmd) 204183054Ssam{ 205183054Ssam struct command *c, *last; 206183054Ssam 207183054Ssam last = NULL; 208183054Ssam LIST_FOREACH(c, list, next) { 209183054Ssam int n = strcmp(cmd->name, c->name); 210183054Ssam 211183054Ssam /* Check that the command is not already present. */ 212183054Ssam if (n == 0) { 213183054Ssam printf("%s: Warning, the command \"%s\" already exists;" 214183054Ssam " ignoring request\n", __func__, cmd->name); 215183054Ssam return; 216183054Ssam } 217183054Ssam if (n < 0) { 218183054Ssam /* NB: keep list sorted lexicographically */ 219183054Ssam LIST_INSERT_BEFORE(c, cmd, next); 220183054Ssam return; 221183054Ssam } 222183054Ssam last = c; 223183054Ssam } 224183054Ssam if (last == NULL) 225183054Ssam LIST_INSERT_HEAD(list, cmd, next); 226183054Ssam else 227183054Ssam LIST_INSERT_AFTER(last, cmd, next); 228183054Ssam} 229183054Ssam 230183054Ssam/* 231183054Ssam * Remove a command previously registered with db_command_register. 232183054Ssam */ 233183054Ssamvoid 234183054Ssamdb_command_unregister(struct command_table *list, struct command *cmd) 235183054Ssam{ 236183054Ssam struct command *c; 237183054Ssam 238183054Ssam LIST_FOREACH(c, list, next) { 239183054Ssam if (cmd == c) { 240183054Ssam LIST_REMOVE(cmd, next); 241183054Ssam return; 242183054Ssam } 243183054Ssam } 244183054Ssam /* NB: intentionally quiet */ 245183054Ssam} 246183054Ssam 247183054Ssam/* 248156412Sjhb * Helper function to match a single command. 2494Srgrimes */ 250156412Sjhbstatic void 251156412Sjhbdb_cmd_match(name, cmd, cmdp, resultp) 2524Srgrimes char * name; 253156412Sjhb struct command *cmd; 2544Srgrimes struct command **cmdp; /* out */ 255156412Sjhb int * resultp; 2564Srgrimes{ 257156412Sjhb char *lp, *rp; 258156412Sjhb int c; 2594Srgrimes 260156412Sjhb lp = name; 261156412Sjhb rp = cmd->name; 262156412Sjhb while ((c = *lp) == *rp) { 2634Srgrimes if (c == 0) { 264156412Sjhb /* complete match */ 265156412Sjhb *cmdp = cmd; 266156412Sjhb *resultp = CMD_UNIQUE; 267156412Sjhb return; 2684Srgrimes } 2694Srgrimes lp++; 2704Srgrimes rp++; 271156412Sjhb } 272156412Sjhb if (c == 0) { 2734Srgrimes /* end of name, not end of command - 2744Srgrimes partial match */ 275156412Sjhb if (*resultp == CMD_FOUND) { 276156412Sjhb *resultp = CMD_AMBIGUOUS; 277156412Sjhb /* but keep looking for a full match - 278156412Sjhb this lets us match single letters */ 279156412Sjhb } else { 280156412Sjhb *cmdp = cmd; 281156412Sjhb *resultp = CMD_FOUND; 2824Srgrimes } 2834Srgrimes } 284156412Sjhb} 28518296Sbde 286156412Sjhb/* 287156412Sjhb * Search for command prefix. 288156412Sjhb */ 289156412Sjhbstatic int 290156412Sjhbdb_cmd_search(name, table, cmdp) 291156412Sjhb char * name; 292156412Sjhb struct command_table *table; 293156412Sjhb struct command **cmdp; /* out */ 294156412Sjhb{ 295156412Sjhb struct command *cmd; 296156412Sjhb int result = CMD_NONE; 297156412Sjhb 298183054Ssam LIST_FOREACH(cmd, table, next) { 299183054Ssam db_cmd_match(name,cmd,cmdp,&result); 300156412Sjhb if (result == CMD_UNIQUE) 301183054Ssam break; 302156412Sjhb } 303183054Ssam 3044Srgrimes if (result == CMD_NONE) { 305156412Sjhb /* check for 'help' */ 3064Srgrimes if (name[0] == 'h' && name[1] == 'e' 3074Srgrimes && name[2] == 'l' && name[3] == 'p') 3084Srgrimes result = CMD_HELP; 3094Srgrimes } 3104Srgrimes return (result); 3114Srgrimes} 3124Srgrimes 31312515Sphkstatic void 314156412Sjhbdb_cmd_list(table) 315156412Sjhb struct command_table *table; 3164Srgrimes{ 317183054Ssam register struct command *cmd; 3184Srgrimes 319183054Ssam LIST_FOREACH(cmd, table, next) { 320183054Ssam db_printf("%-12s", cmd->name); 321183054Ssam db_end_line(12); 3224Srgrimes } 3234Srgrimes} 3244Srgrimes 32512515Sphkstatic void 326174914Srwatsondb_command(last_cmdp, cmd_table, dopager) 3274Srgrimes struct command **last_cmdp; /* IN_OUT */ 328156412Sjhb struct command_table *cmd_table; 329174914Srwatson int dopager; 3304Srgrimes{ 331183054Ssam struct command *cmd = NULL; 3324Srgrimes int t; 3334Srgrimes char modif[TOK_STRING_SIZE]; 3344Srgrimes db_expr_t addr, count; 335798Swollman boolean_t have_addr = FALSE; 3364Srgrimes int result; 3374Srgrimes 3384Srgrimes t = db_read_token(); 3394Srgrimes if (t == tEOL) { 3404Srgrimes /* empty line repeats last command, at 'next' */ 3414Srgrimes cmd = *last_cmdp; 3424Srgrimes addr = (db_expr_t)db_next; 3434Srgrimes have_addr = FALSE; 3444Srgrimes count = 1; 3454Srgrimes modif[0] = '\0'; 3464Srgrimes } 3474Srgrimes else if (t == tEXCL) { 34810348Sbde db_fncall((db_expr_t)0, (boolean_t)0, (db_expr_t)0, (char *)0); 3494Srgrimes return; 3504Srgrimes } 3514Srgrimes else if (t != tIDENT) { 3524Srgrimes db_printf("?\n"); 3534Srgrimes db_flush_lex(); 3544Srgrimes return; 3554Srgrimes } 3564Srgrimes else { 3574Srgrimes /* 3584Srgrimes * Search for command 3594Srgrimes */ 3604Srgrimes while (cmd_table) { 3614Srgrimes result = db_cmd_search(db_tok_string, 3624Srgrimes cmd_table, 3634Srgrimes &cmd); 3644Srgrimes switch (result) { 3654Srgrimes case CMD_NONE: 3664Srgrimes db_printf("No such command\n"); 3674Srgrimes db_flush_lex(); 3684Srgrimes return; 3694Srgrimes case CMD_AMBIGUOUS: 3704Srgrimes db_printf("Ambiguous\n"); 3714Srgrimes db_flush_lex(); 3724Srgrimes return; 3734Srgrimes case CMD_HELP: 374156412Sjhb db_cmd_list(cmd_table); 3754Srgrimes db_flush_lex(); 3764Srgrimes return; 3774Srgrimes default: 3784Srgrimes break; 3794Srgrimes } 380156412Sjhb if ((cmd_table = cmd->more) != NULL) { 3814Srgrimes t = db_read_token(); 3824Srgrimes if (t != tIDENT) { 383156412Sjhb db_cmd_list(cmd_table); 3844Srgrimes db_flush_lex(); 3854Srgrimes return; 3864Srgrimes } 3874Srgrimes } 3884Srgrimes } 3894Srgrimes 3904Srgrimes if ((cmd->flag & CS_OWN) == 0) { 3914Srgrimes /* 3924Srgrimes * Standard syntax: 3934Srgrimes * command [/modifier] [addr] [,count] 3944Srgrimes */ 3954Srgrimes t = db_read_token(); 3964Srgrimes if (t == tSLASH) { 3974Srgrimes t = db_read_token(); 3984Srgrimes if (t != tIDENT) { 3994Srgrimes db_printf("Bad modifier\n"); 4004Srgrimes db_flush_lex(); 4014Srgrimes return; 4024Srgrimes } 4034Srgrimes db_strcpy(modif, db_tok_string); 4044Srgrimes } 4054Srgrimes else { 4064Srgrimes db_unread_token(t); 4074Srgrimes modif[0] = '\0'; 4084Srgrimes } 4094Srgrimes 4104Srgrimes if (db_expression(&addr)) { 4114Srgrimes db_dot = (db_addr_t) addr; 4124Srgrimes db_last_addr = db_dot; 4134Srgrimes have_addr = TRUE; 4144Srgrimes } 4154Srgrimes else { 4164Srgrimes addr = (db_expr_t) db_dot; 4174Srgrimes have_addr = FALSE; 4184Srgrimes } 4194Srgrimes t = db_read_token(); 4204Srgrimes if (t == tCOMMA) { 4214Srgrimes if (!db_expression(&count)) { 4224Srgrimes db_printf("Count missing\n"); 4234Srgrimes db_flush_lex(); 4244Srgrimes return; 4254Srgrimes } 4264Srgrimes } 4274Srgrimes else { 4284Srgrimes db_unread_token(t); 4294Srgrimes count = -1; 4304Srgrimes } 4314Srgrimes if ((cmd->flag & CS_MORE) == 0) { 4324Srgrimes db_skip_to_eol(); 4334Srgrimes } 4344Srgrimes } 4354Srgrimes } 4364Srgrimes *last_cmdp = cmd; 4374Srgrimes if (cmd != 0) { 4384Srgrimes /* 4394Srgrimes * Execute the command. 4404Srgrimes */ 441174914Srwatson if (dopager) 442174914Srwatson db_enable_pager(); 443174914Srwatson else 444174914Srwatson db_disable_pager(); 4454Srgrimes (*cmd->fcn)(addr, have_addr, count, modif); 446174914Srwatson if (dopager) 447174914Srwatson db_disable_pager(); 4484Srgrimes 4494Srgrimes if (cmd->flag & CS_SET_DOT) { 4504Srgrimes /* 4514Srgrimes * If command changes dot, set dot to 4524Srgrimes * previous address displayed (if 'ed' style). 4534Srgrimes */ 4544Srgrimes if (db_ed_style) { 4554Srgrimes db_dot = db_prev; 4564Srgrimes } 4574Srgrimes else { 4584Srgrimes db_dot = db_next; 4594Srgrimes } 4604Srgrimes } 4614Srgrimes else { 4624Srgrimes /* 4634Srgrimes * If command does not change dot, 4644Srgrimes * set 'next' location to be the same. 4654Srgrimes */ 4664Srgrimes db_next = db_dot; 4674Srgrimes } 4684Srgrimes } 4694Srgrimes} 4704Srgrimes 4714Srgrimes/* 47233296Sbde * At least one non-optional command must be implemented using 47333296Sbde * DB_COMMAND() so that db_cmd_set gets created. Here is one. 47433296Sbde */ 47533296SbdeDB_COMMAND(panic, db_panic) 4766204Sphk{ 477160505Sjhb db_disable_pager(); 4787170Sdg panic("from debugger"); 4796204Sphk} 4806204Sphk 4816204Sphkvoid 4824Srgrimesdb_command_loop() 4834Srgrimes{ 4844Srgrimes /* 4854Srgrimes * Initialize 'prev' and 'next' to dot. 4864Srgrimes */ 4874Srgrimes db_prev = db_dot; 4884Srgrimes db_next = db_dot; 4894Srgrimes 4904Srgrimes db_cmd_loop_done = 0; 4914Srgrimes while (!db_cmd_loop_done) { 4924Srgrimes if (db_print_position() != 0) 4934Srgrimes db_printf("\n"); 4944Srgrimes 4954Srgrimes db_printf("db> "); 4964Srgrimes (void) db_read_line(); 4974Srgrimes 498183054Ssam db_command(&db_last_command, &db_cmd_table, /* dopager */ 1); 4994Srgrimes } 5004Srgrimes} 5014Srgrimes 502174914Srwatson/* 503174914Srwatson * Execute a command on behalf of a script. The caller is responsible for 504174914Srwatson * making sure that the command string is < DB_MAXLINE or it will be 505174914Srwatson * truncated. 506174914Srwatson * 507174914Srwatson * XXXRW: Runs by injecting faked input into DDB input stream; it would be 508174914Srwatson * nicer to use an alternative approach that didn't mess with the previous 509174914Srwatson * command buffer. 510174914Srwatson */ 5114Srgrimesvoid 512174914Srwatsondb_command_script(const char *command) 513174914Srwatson{ 514174914Srwatson db_prev = db_next = db_dot; 515174914Srwatson db_inject_line(command); 516183054Ssam db_command(&db_last_command, &db_cmd_table, /* dopager */ 0); 517174914Srwatson} 518174914Srwatson 519174914Srwatsonvoid 5204Srgrimesdb_error(s) 521103746Smarkm const char *s; 5224Srgrimes{ 5234Srgrimes if (s) 52479884Skris db_printf("%s", s); 5254Srgrimes db_flush_lex(); 526131952Smarcel kdb_reenter(); 5274Srgrimes} 5284Srgrimes 5294Srgrimes 5304Srgrimes/* 5314Srgrimes * Call random function: 5324Srgrimes * !expr(arg,arg,arg) 5334Srgrimes */ 534147745Smarcel 535147745Smarcel/* The generic implementation supports a maximum of 10 arguments. */ 536147745Smarceltypedef db_expr_t __db_f(db_expr_t, db_expr_t, db_expr_t, db_expr_t, 537147745Smarcel db_expr_t, db_expr_t, db_expr_t, db_expr_t, db_expr_t, db_expr_t); 538147745Smarcel 539147745Smarcelstatic __inline int 540147745Smarceldb_fncall_generic(db_expr_t addr, db_expr_t *rv, int nargs, db_expr_t args[]) 541147745Smarcel{ 542147745Smarcel __db_f *f = (__db_f *)addr; 543147745Smarcel 544147745Smarcel if (nargs > 10) { 545147745Smarcel db_printf("Too many arguments (max 10)\n"); 546147745Smarcel return (0); 547147745Smarcel } 548147745Smarcel *rv = (*f)(args[0], args[1], args[2], args[3], args[4], args[5], 549147745Smarcel args[6], args[7], args[8], args[9]); 550147745Smarcel return (1); 551147745Smarcel} 552147745Smarcel 55312515Sphkstatic void 55410348Sbdedb_fncall(dummy1, dummy2, dummy3, dummy4) 55510348Sbde db_expr_t dummy1; 55610348Sbde boolean_t dummy2; 55710348Sbde db_expr_t dummy3; 55810348Sbde char * dummy4; 5594Srgrimes{ 5604Srgrimes db_expr_t fn_addr; 561147745Smarcel db_expr_t args[DB_MAXARGS]; 5624Srgrimes int nargs = 0; 5634Srgrimes db_expr_t retval; 5644Srgrimes int t; 5654Srgrimes 5664Srgrimes if (!db_expression(&fn_addr)) { 5674Srgrimes db_printf("Bad function\n"); 5684Srgrimes db_flush_lex(); 5694Srgrimes return; 5704Srgrimes } 5714Srgrimes 5724Srgrimes t = db_read_token(); 5734Srgrimes if (t == tLPAREN) { 5744Srgrimes if (db_expression(&args[0])) { 5754Srgrimes nargs++; 5764Srgrimes while ((t = db_read_token()) == tCOMMA) { 577147745Smarcel if (nargs == DB_MAXARGS) { 578147745Smarcel db_printf("Too many arguments (max %d)\n", DB_MAXARGS); 5794Srgrimes db_flush_lex(); 5804Srgrimes return; 5814Srgrimes } 5824Srgrimes if (!db_expression(&args[nargs])) { 5834Srgrimes db_printf("Argument missing\n"); 5844Srgrimes db_flush_lex(); 5854Srgrimes return; 5864Srgrimes } 5874Srgrimes nargs++; 5884Srgrimes } 5894Srgrimes db_unread_token(t); 5904Srgrimes } 5914Srgrimes if (db_read_token() != tRPAREN) { 5924Srgrimes db_printf("?\n"); 5934Srgrimes db_flush_lex(); 5944Srgrimes return; 5954Srgrimes } 5964Srgrimes } 5974Srgrimes db_skip_to_eol(); 598160505Sjhb db_disable_pager(); 5994Srgrimes 600147745Smarcel if (DB_CALL(fn_addr, &retval, nargs, args)) 601147745Smarcel db_printf("= %#lr\n", (long)retval); 6024Srgrimes} 60317848Spst 60417848Spststatic void 605163192Sbdedb_halt(db_expr_t dummy, boolean_t dummy2, db_expr_t dummy3, char *dummy4) 606163192Sbde{ 607163192Sbde 608163192Sbde cpu_halt(); 609163192Sbde} 610163192Sbde 611163192Sbdestatic void 61286998Sdddb_kill(dummy1, dummy2, dummy3, dummy4) 61386998Sdd db_expr_t dummy1; 61486998Sdd boolean_t dummy2; 61586998Sdd db_expr_t dummy3; 61686998Sdd char * dummy4; 61786998Sdd{ 61886998Sdd db_expr_t old_radix, pid, sig; 61986998Sdd struct proc *p; 62086998Sdd 62186998Sdd#define DB_ERROR(f) do { db_printf f; db_flush_lex(); goto out; } while (0) 62286998Sdd 62386998Sdd /* 62486998Sdd * PIDs and signal numbers are typically represented in base 62586998Sdd * 10, so make that the default here. It can, of course, be 62686998Sdd * overridden by specifying a prefix. 62786998Sdd */ 62886998Sdd old_radix = db_radix; 62986998Sdd db_radix = 10; 63086998Sdd /* Retrieve arguments. */ 63186998Sdd if (!db_expression(&sig)) 63286998Sdd DB_ERROR(("Missing signal number\n")); 63386998Sdd if (!db_expression(&pid)) 63486998Sdd DB_ERROR(("Missing process ID\n")); 63586998Sdd db_skip_to_eol(); 636176897Srwatson if (sig < 1 || sig > _SIG_MAXSIG) 63786998Sdd DB_ERROR(("Signal number out of range\n")); 63886998Sdd 63986998Sdd /* 64086998Sdd * Find the process in question. allproc_lock is not needed 64186998Sdd * since we're in DDB. 64286998Sdd */ 64386998Sdd /* sx_slock(&allproc_lock); */ 644166074Sdelphij FOREACH_PROC_IN_SYSTEM(p) 64586998Sdd if (p->p_pid == pid) 64686998Sdd break; 64786998Sdd /* sx_sunlock(&allproc_lock); */ 64886998Sdd if (p == NULL) 64989442Smjacob DB_ERROR(("Can't find process with pid %ld\n", (long) pid)); 65086998Sdd 65186998Sdd /* If it's already locked, bail; otherwise, do the deed. */ 65286998Sdd if (PROC_TRYLOCK(p) == 0) 65389442Smjacob DB_ERROR(("Can't lock process with pid %ld\n", (long) pid)); 65486998Sdd else { 655199355Skib pksignal(p, sig, NULL); 65686998Sdd PROC_UNLOCK(p); 65786998Sdd } 65886998Sdd 65986998Sddout: 66086998Sdd db_radix = old_radix; 66186998Sdd#undef DB_ERROR 66286998Sdd} 66386998Sdd 66486998Sddstatic void 66585944Speterdb_reset(dummy1, dummy2, dummy3, dummy4) 66685944Speter db_expr_t dummy1; 66785944Speter boolean_t dummy2; 66885944Speter db_expr_t dummy3; 66985944Speter char * dummy4; 67085944Speter{ 67185944Speter 67285944Speter cpu_reset(); 67385944Speter} 674126399Sphk 675126399Sphkstatic void 676126399Sphkdb_watchdog(dummy1, dummy2, dummy3, dummy4) 677126399Sphk db_expr_t dummy1; 678126399Sphk boolean_t dummy2; 679126399Sphk db_expr_t dummy3; 680126399Sphk char * dummy4; 681126399Sphk{ 682126399Sphk int i; 683126399Sphk 684126399Sphk /* 685126399Sphk * XXX: It might make sense to be able to set the watchdog to a 686126399Sphk * XXX: timeout here so that failure or hang as a result of subsequent 687126399Sphk * XXX: ddb commands could be recovered by a reset. 688126399Sphk */ 689126399Sphk 690126399Sphk EVENTHANDLER_INVOKE(watchdog_list, 0, &i); 691126399Sphk} 692132002Smarcel 693132002Smarcelstatic void 694132002Smarceldb_gdb(db_expr_t dummy1, boolean_t dummy2, db_expr_t dummy3, char *dummy4) 695132002Smarcel{ 696132002Smarcel 697132002Smarcel if (kdb_dbbe_select("gdb") != 0) 698132002Smarcel db_printf("The remote GDB backend could not be selected.\n"); 699132002Smarcel else 700132002Smarcel db_printf("Step to enter the remote GDB backend.\n"); 701132002Smarcel} 702132482Smarcel 703132482Smarcelstatic void 704132482Smarceldb_stack_trace(db_expr_t tid, boolean_t hastid, db_expr_t count, char *modif) 705132482Smarcel{ 706132482Smarcel struct thread *td; 707132482Smarcel db_expr_t radix; 708138038Srwatson pid_t pid; 709132482Smarcel int t; 710132482Smarcel 711132482Smarcel /* 712132482Smarcel * We parse our own arguments. We don't like the default radix. 713132482Smarcel */ 714132482Smarcel radix = db_radix; 715132482Smarcel db_radix = 10; 716132482Smarcel hastid = db_expression(&tid); 717132482Smarcel t = db_read_token(); 718132482Smarcel if (t == tCOMMA) { 719132482Smarcel if (!db_expression(&count)) { 720132482Smarcel db_printf("Count missing\n"); 721132482Smarcel db_flush_lex(); 722132482Smarcel return; 723132482Smarcel } 724132482Smarcel } else { 725132482Smarcel db_unread_token(t); 726132482Smarcel count = -1; 727132482Smarcel } 728132482Smarcel db_skip_to_eol(); 729132482Smarcel db_radix = radix; 730132482Smarcel 731132482Smarcel if (hastid) { 732132482Smarcel td = kdb_thr_lookup((lwpid_t)tid); 733132482Smarcel if (td == NULL) 734132482Smarcel td = kdb_thr_from_pid((pid_t)tid); 735132482Smarcel if (td == NULL) { 736132482Smarcel db_printf("Thread %d not found\n", (int)tid); 737132482Smarcel return; 738132482Smarcel } 739132482Smarcel } else 740132482Smarcel td = kdb_thread; 741138038Srwatson if (td->td_proc != NULL) 742138038Srwatson pid = td->td_proc->p_pid; 743138038Srwatson else 744138038Srwatson pid = -1; 745138038Srwatson db_printf("Tracing pid %d tid %ld td %p\n", pid, (long)td->td_tid, td); 746132482Smarcel db_trace_thread(td, count); 747132482Smarcel} 748150819Srwatson 749150819Srwatsonstatic void 750150819Srwatsondb_stack_trace_all(db_expr_t dummy, boolean_t dummy2, db_expr_t dummy3, 751150819Srwatson char *dummy4) 752150819Srwatson{ 753150819Srwatson struct proc *p; 754150819Srwatson struct thread *td; 755163909Skib jmp_buf jb; 756163909Skib void *prev_jb; 757150819Srwatson 758166074Sdelphij FOREACH_PROC_IN_SYSTEM(p) { 759163909Skib prev_jb = kdb_jmpbuf(jb); 760163909Skib if (setjmp(jb) == 0) { 761163909Skib FOREACH_THREAD_IN_PROC(p, td) { 762163909Skib db_printf("\nTracing command %s pid %d tid %ld td %p\n", 763163909Skib p->p_comm, p->p_pid, (long)td->td_tid, td); 764163909Skib db_trace_thread(td, -1); 765163909Skib if (db_pager_quit) { 766163909Skib kdb_jmpbuf(prev_jb); 767163909Skib return; 768163909Skib } 769163909Skib } 770150819Srwatson } 771163909Skib kdb_jmpbuf(prev_jb); 772150819Srwatson } 773150819Srwatson} 774