db_command.c revision 118990
18876Srgrimes/* 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 118990 2003-08-16 16:57:57Z marcel $"); 36116176Sobrien 372056Swollman#include <sys/param.h> 3842654Sjdp#include <sys/linker_set.h> 3986998Sdd#include <sys/lock.h> 4086998Sdd#include <sys/mutex.h> 4186998Sdd#include <sys/proc.h> 4217848Spst#include <sys/reboot.h> 4386998Sdd#include <sys/signalvar.h> 442056Swollman#include <sys/systm.h> 4549558Sphk#include <sys/cons.h> 4612734Sbde 472056Swollman#include <ddb/ddb.h> 4812473Sbde#include <ddb/db_command.h> 494Srgrimes#include <ddb/db_lex.h> 504Srgrimes#include <ddb/db_output.h> 514Srgrimes 52118990Smarcel#include <machine/cpu.h> 5379418Sjulian#include <machine/setjmp.h> 544Srgrimes 554Srgrimes/* 564Srgrimes * Exported global variables 574Srgrimes */ 584Srgrimesboolean_t db_cmd_loop_done; 5918296Sbdedb_addr_t db_dot; 604Srgrimesjmp_buf db_jmpbuf; 614Srgrimesdb_addr_t db_last_addr; 624Srgrimesdb_addr_t db_prev; 634Srgrimesdb_addr_t db_next; 644Srgrimes 6578161SpeterSET_DECLARE(db_cmd_set, struct command); 6678161SpeterSET_DECLARE(db_show_cmd_set, struct command); 6778161Speter 6812515Sphkstatic db_cmdfcn_t db_fncall; 6917848Spststatic db_cmdfcn_t db_gdb; 7086998Sddstatic db_cmdfcn_t db_kill; 7185944Speterstatic db_cmdfcn_t db_reset; 7217848Spst 7318296Sbde/* XXX this is actually forward-static. */ 7418296Sbdeextern struct command db_show_cmds[]; 7518296Sbde 764Srgrimes/* 774Srgrimes * if 'ed' style: 'dot' is set at start of last item printed, 784Srgrimes * and '+' points to next line. 794Srgrimes * Otherwise: 'dot' points to next item, '..' points to last. 804Srgrimes */ 8112515Sphkstatic boolean_t db_ed_style = TRUE; 824Srgrimes 834Srgrimes/* 844Srgrimes * Utility routine - discard tokens through end-of-line. 854Srgrimes */ 864Srgrimesvoid 874Srgrimesdb_skip_to_eol() 884Srgrimes{ 894Srgrimes int t; 904Srgrimes do { 914Srgrimes t = db_read_token(); 924Srgrimes } while (t != tEOL); 934Srgrimes} 944Srgrimes 954Srgrimes/* 964Srgrimes * Results of command search. 974Srgrimes */ 984Srgrimes#define CMD_UNIQUE 0 994Srgrimes#define CMD_FOUND 1 1004Srgrimes#define CMD_NONE 2 1014Srgrimes#define CMD_AMBIGUOUS 3 1024Srgrimes#define CMD_HELP 4 1034Srgrimes 10493009Sbdestatic void db_cmd_list(struct command *table, struct command **aux_tablep, 10593009Sbde struct command **aux_tablep_end); 10692756Salfredstatic int db_cmd_search(char *name, struct command *table, 10793009Sbde struct command **aux_tablep, 10893009Sbde struct command **aux_tablep_end, struct command **cmdp); 10992756Salfredstatic void db_command(struct command **last_cmdp, 11093009Sbde struct command *cmd_table, struct command **aux_cmd_tablep, 11193009Sbde struct command **aux_cmd_tablep_end); 11212473Sbde 1134Srgrimes/* 1144Srgrimes * Search for command prefix. 1154Srgrimes */ 11612515Sphkstatic int 11778161Speterdb_cmd_search(name, table, aux_tablep, aux_tablep_end, cmdp) 1184Srgrimes char * name; 1194Srgrimes struct command *table; 12018296Sbde struct command **aux_tablep; 12178161Speter struct command **aux_tablep_end; 1224Srgrimes struct command **cmdp; /* out */ 1234Srgrimes{ 1244Srgrimes struct command *cmd; 12518296Sbde struct command **aux_cmdp; 1264Srgrimes int result = CMD_NONE; 1274Srgrimes 1284Srgrimes for (cmd = table; cmd->name != 0; cmd++) { 1294Srgrimes register char *lp; 1304Srgrimes register char *rp; 1314Srgrimes register int c; 1324Srgrimes 1334Srgrimes lp = name; 1344Srgrimes rp = cmd->name; 1354Srgrimes while ((c = *lp) == *rp) { 1364Srgrimes if (c == 0) { 1374Srgrimes /* complete match */ 1384Srgrimes *cmdp = cmd; 1394Srgrimes return (CMD_UNIQUE); 1404Srgrimes } 1414Srgrimes lp++; 1424Srgrimes rp++; 1434Srgrimes } 1444Srgrimes if (c == 0) { 1454Srgrimes /* end of name, not end of command - 1464Srgrimes partial match */ 1474Srgrimes if (result == CMD_FOUND) { 1484Srgrimes result = CMD_AMBIGUOUS; 1494Srgrimes /* but keep looking for a full match - 1504Srgrimes this lets us match single letters */ 1514Srgrimes } 1524Srgrimes else { 1534Srgrimes *cmdp = cmd; 1544Srgrimes result = CMD_FOUND; 1554Srgrimes } 1564Srgrimes } 1574Srgrimes } 15818296Sbde if (result == CMD_NONE && aux_tablep != 0) 15918296Sbde /* XXX repeat too much code. */ 16078161Speter for (aux_cmdp = aux_tablep; aux_cmdp < aux_tablep_end; aux_cmdp++) { 16118296Sbde register char *lp; 16218296Sbde register char *rp; 16318296Sbde register int c; 16418296Sbde 16518296Sbde lp = name; 16618296Sbde rp = (*aux_cmdp)->name; 16718296Sbde while ((c = *lp) == *rp) { 16818296Sbde if (c == 0) { 16918296Sbde /* complete match */ 17018296Sbde *cmdp = *aux_cmdp; 17118296Sbde return (CMD_UNIQUE); 17218296Sbde } 17318296Sbde lp++; 17418296Sbde rp++; 17518296Sbde } 17618296Sbde if (c == 0) { 17718296Sbde /* end of name, not end of command - 17818296Sbde partial match */ 17918296Sbde if (result == CMD_FOUND) { 18018296Sbde result = CMD_AMBIGUOUS; 18118296Sbde /* but keep looking for a full match - 18218296Sbde this lets us match single letters */ 18318296Sbde } 18418296Sbde else { 18518296Sbde *cmdp = *aux_cmdp; 18618296Sbde result = CMD_FOUND; 18718296Sbde } 18818296Sbde } 18918296Sbde } 1904Srgrimes if (result == CMD_NONE) { 1914Srgrimes /* check for 'help' */ 1924Srgrimes if (name[0] == 'h' && name[1] == 'e' 1934Srgrimes && name[2] == 'l' && name[3] == 'p') 1944Srgrimes result = CMD_HELP; 1954Srgrimes } 1964Srgrimes return (result); 1974Srgrimes} 1984Srgrimes 19912515Sphkstatic void 20078161Speterdb_cmd_list(table, aux_tablep, aux_tablep_end) 2014Srgrimes struct command *table; 20218296Sbde struct command **aux_tablep; 20378161Speter struct command **aux_tablep_end; 2044Srgrimes{ 2054Srgrimes register struct command *cmd; 20618296Sbde register struct command **aux_cmdp; 2074Srgrimes 2084Srgrimes for (cmd = table; cmd->name != 0; cmd++) { 2094Srgrimes db_printf("%-12s", cmd->name); 2104Srgrimes db_end_line(); 2114Srgrimes } 21218296Sbde if (aux_tablep == 0) 21318296Sbde return; 21478161Speter for (aux_cmdp = aux_tablep; aux_cmdp < aux_tablep_end; aux_cmdp++) { 21518296Sbde db_printf("%-12s", (*aux_cmdp)->name); 21618296Sbde db_end_line(); 21718296Sbde } 2184Srgrimes} 2194Srgrimes 22012515Sphkstatic void 22178161Speterdb_command(last_cmdp, cmd_table, aux_cmd_tablep, aux_cmd_tablep_end) 2224Srgrimes struct command **last_cmdp; /* IN_OUT */ 2234Srgrimes struct command *cmd_table; 22418296Sbde struct command **aux_cmd_tablep; 22578161Speter struct command **aux_cmd_tablep_end; 2264Srgrimes{ 2274Srgrimes struct command *cmd; 2284Srgrimes int t; 2294Srgrimes char modif[TOK_STRING_SIZE]; 2304Srgrimes db_expr_t addr, count; 231798Swollman boolean_t have_addr = FALSE; 2324Srgrimes int result; 2334Srgrimes 2344Srgrimes t = db_read_token(); 2354Srgrimes if (t == tEOL) { 2364Srgrimes /* empty line repeats last command, at 'next' */ 2374Srgrimes cmd = *last_cmdp; 2384Srgrimes addr = (db_expr_t)db_next; 2394Srgrimes have_addr = FALSE; 2404Srgrimes count = 1; 2414Srgrimes modif[0] = '\0'; 2424Srgrimes } 2434Srgrimes else if (t == tEXCL) { 24410348Sbde db_fncall((db_expr_t)0, (boolean_t)0, (db_expr_t)0, (char *)0); 2454Srgrimes return; 2464Srgrimes } 2474Srgrimes else if (t != tIDENT) { 2484Srgrimes db_printf("?\n"); 2494Srgrimes db_flush_lex(); 2504Srgrimes return; 2514Srgrimes } 2524Srgrimes else { 2534Srgrimes /* 2544Srgrimes * Search for command 2554Srgrimes */ 2564Srgrimes while (cmd_table) { 2574Srgrimes result = db_cmd_search(db_tok_string, 2584Srgrimes cmd_table, 25918296Sbde aux_cmd_tablep, 26078161Speter aux_cmd_tablep_end, 2614Srgrimes &cmd); 2624Srgrimes switch (result) { 2634Srgrimes case CMD_NONE: 2644Srgrimes db_printf("No such command\n"); 2654Srgrimes db_flush_lex(); 2664Srgrimes return; 2674Srgrimes case CMD_AMBIGUOUS: 2684Srgrimes db_printf("Ambiguous\n"); 2694Srgrimes db_flush_lex(); 2704Srgrimes return; 2714Srgrimes case CMD_HELP: 27278161Speter db_cmd_list(cmd_table, aux_cmd_tablep, aux_cmd_tablep_end); 2734Srgrimes db_flush_lex(); 2744Srgrimes return; 2754Srgrimes default: 2764Srgrimes break; 2774Srgrimes } 2784Srgrimes if ((cmd_table = cmd->more) != 0) { 27918296Sbde /* XXX usually no more aux's. */ 28018296Sbde aux_cmd_tablep = 0; 281104321Sphk if (cmd_table == db_show_cmds) { 28278161Speter aux_cmd_tablep = SET_BEGIN(db_show_cmd_set); 28378161Speter aux_cmd_tablep_end = SET_LIMIT(db_show_cmd_set); 284104321Sphk } 28518296Sbde 2864Srgrimes t = db_read_token(); 2874Srgrimes if (t != tIDENT) { 28878161Speter db_cmd_list(cmd_table, aux_cmd_tablep, aux_cmd_tablep_end); 2894Srgrimes db_flush_lex(); 2904Srgrimes return; 2914Srgrimes } 2924Srgrimes } 2934Srgrimes } 2944Srgrimes 2954Srgrimes if ((cmd->flag & CS_OWN) == 0) { 2964Srgrimes /* 2974Srgrimes * Standard syntax: 2984Srgrimes * command [/modifier] [addr] [,count] 2994Srgrimes */ 3004Srgrimes t = db_read_token(); 3014Srgrimes if (t == tSLASH) { 3024Srgrimes t = db_read_token(); 3034Srgrimes if (t != tIDENT) { 3044Srgrimes db_printf("Bad modifier\n"); 3054Srgrimes db_flush_lex(); 3064Srgrimes return; 3074Srgrimes } 3084Srgrimes db_strcpy(modif, db_tok_string); 3094Srgrimes } 3104Srgrimes else { 3114Srgrimes db_unread_token(t); 3124Srgrimes modif[0] = '\0'; 3134Srgrimes } 3144Srgrimes 3154Srgrimes if (db_expression(&addr)) { 3164Srgrimes db_dot = (db_addr_t) addr; 3174Srgrimes db_last_addr = db_dot; 3184Srgrimes have_addr = TRUE; 3194Srgrimes } 3204Srgrimes else { 3214Srgrimes addr = (db_expr_t) db_dot; 3224Srgrimes have_addr = FALSE; 3234Srgrimes } 3244Srgrimes t = db_read_token(); 3254Srgrimes if (t == tCOMMA) { 3264Srgrimes if (!db_expression(&count)) { 3274Srgrimes db_printf("Count missing\n"); 3284Srgrimes db_flush_lex(); 3294Srgrimes return; 3304Srgrimes } 3314Srgrimes } 3324Srgrimes else { 3334Srgrimes db_unread_token(t); 3344Srgrimes count = -1; 3354Srgrimes } 3364Srgrimes if ((cmd->flag & CS_MORE) == 0) { 3374Srgrimes db_skip_to_eol(); 3384Srgrimes } 3394Srgrimes } 3404Srgrimes } 3414Srgrimes *last_cmdp = cmd; 3424Srgrimes if (cmd != 0) { 3434Srgrimes /* 3444Srgrimes * Execute the command. 3454Srgrimes */ 3464Srgrimes (*cmd->fcn)(addr, have_addr, count, modif); 347118268Sjhb db_setup_paging(NULL, NULL, -1); 3484Srgrimes 3494Srgrimes if (cmd->flag & CS_SET_DOT) { 3504Srgrimes /* 3514Srgrimes * If command changes dot, set dot to 3524Srgrimes * previous address displayed (if 'ed' style). 3534Srgrimes */ 3544Srgrimes if (db_ed_style) { 3554Srgrimes db_dot = db_prev; 3564Srgrimes } 3574Srgrimes else { 3584Srgrimes db_dot = db_next; 3594Srgrimes } 3604Srgrimes } 3614Srgrimes else { 3624Srgrimes /* 3634Srgrimes * If command does not change dot, 3644Srgrimes * set 'next' location to be the same. 3654Srgrimes */ 3664Srgrimes db_next = db_dot; 3674Srgrimes } 3684Srgrimes } 3694Srgrimes} 3704Srgrimes 3714Srgrimes/* 3724Srgrimes * 'show' commands 3734Srgrimes */ 3742112Swollman 37512515Sphkstatic struct command db_show_all_cmds[] = { 3764Srgrimes#if 0 3771147Sguido { "threads", db_show_all_threads, 0, 0 }, 3782320Sdg#endif 3791549Srgrimes { "procs", db_ps, 0, 0 }, 3804Srgrimes { (char *)0 } 3814Srgrimes}; 3824Srgrimes 38312515Sphkstatic struct command db_show_cmds[] = { 3844Srgrimes { "all", 0, 0, db_show_all_cmds }, 3854Srgrimes { "registers", db_show_regs, 0, 0 }, 3864Srgrimes { "breaks", db_listbreak_cmd, 0, 0 }, 3874Srgrimes { "thread", db_show_one_thread, 0, 0 }, 3884Srgrimes#if 0 3894Srgrimes { "port", ipc_port_print, 0, 0 }, 3904Srgrimes#endif 3914Srgrimes { (char *)0, } 3924Srgrimes}; 3934Srgrimes 39412515Sphkstatic struct command db_command_table[] = { 3954Srgrimes { "print", db_print_cmd, 0, 0 }, 3966920Sjoerg { "p", db_print_cmd, 0, 0 }, 3974Srgrimes { "examine", db_examine_cmd, CS_SET_DOT, 0 }, 3984Srgrimes { "x", db_examine_cmd, CS_SET_DOT, 0 }, 3994Srgrimes { "search", db_search_cmd, CS_OWN|CS_SET_DOT, 0 }, 4004Srgrimes { "set", db_set_cmd, CS_OWN, 0 }, 4014Srgrimes { "write", db_write_cmd, CS_MORE|CS_SET_DOT, 0 }, 4024Srgrimes { "w", db_write_cmd, CS_MORE|CS_SET_DOT, 0 }, 4034Srgrimes { "delete", db_delete_cmd, 0, 0 }, 4044Srgrimes { "d", db_delete_cmd, 0, 0 }, 4054Srgrimes { "break", db_breakpoint_cmd, 0, 0 }, 4064Srgrimes { "dwatch", db_deletewatch_cmd, 0, 0 }, 4074Srgrimes { "watch", db_watchpoint_cmd, CS_MORE,0 }, 40879573Sbsd { "dhwatch", db_deletehwatch_cmd, 0, 0 }, 40979573Sbsd { "hwatch", db_hwatchpoint_cmd, 0, 0 }, 4104Srgrimes { "step", db_single_step_cmd, 0, 0 }, 4114Srgrimes { "s", db_single_step_cmd, 0, 0 }, 4124Srgrimes { "continue", db_continue_cmd, 0, 0 }, 4134Srgrimes { "c", db_continue_cmd, 0, 0 }, 4144Srgrimes { "until", db_trace_until_call_cmd,0, 0 }, 4154Srgrimes { "next", db_trace_until_matching_cmd,0, 0 }, 4164Srgrimes { "match", db_trace_until_matching_cmd,0, 0 }, 4174Srgrimes { "trace", db_stack_trace_cmd, 0, 0 }, 418115607Sphk { "where", db_stack_trace_cmd, 0, 0 }, 4194Srgrimes { "call", db_fncall, CS_OWN, 0 }, 4204Srgrimes { "show", 0, 0, db_show_cmds }, 4211147Sguido { "ps", db_ps, 0, 0 }, 42217848Spst { "gdb", db_gdb, 0, 0 }, 42385944Speter { "reset", db_reset, 0, 0 }, 42486998Sdd { "kill", db_kill, CS_OWN, 0 }, 4254Srgrimes { (char *)0, } 4264Srgrimes}; 4274Srgrimes 42812515Sphkstatic struct command *db_last_command = 0; 4294Srgrimes 4307090Sbde#if 0 4314Srgrimesvoid 4324Srgrimesdb_help_cmd() 4334Srgrimes{ 4344Srgrimes struct command *cmd = db_command_table; 4354Srgrimes 4364Srgrimes while (cmd->name != 0) { 4374Srgrimes db_printf("%-12s", cmd->name); 4384Srgrimes db_end_line(); 4394Srgrimes cmd++; 4404Srgrimes } 4414Srgrimes} 4427090Sbde#endif 4434Srgrimes 44433296Sbde/* 44533296Sbde * At least one non-optional command must be implemented using 44633296Sbde * DB_COMMAND() so that db_cmd_set gets created. Here is one. 44733296Sbde */ 44833296SbdeDB_COMMAND(panic, db_panic) 4496204Sphk{ 4507170Sdg panic("from debugger"); 4516204Sphk} 4526204Sphk 4536204Sphkvoid 4544Srgrimesdb_command_loop() 4554Srgrimes{ 4564Srgrimes /* 4574Srgrimes * Initialize 'prev' and 'next' to dot. 4584Srgrimes */ 4594Srgrimes db_prev = db_dot; 4604Srgrimes db_next = db_dot; 4614Srgrimes 4624Srgrimes db_cmd_loop_done = 0; 4634Srgrimes while (!db_cmd_loop_done) { 4644Srgrimes 4654Srgrimes (void) setjmp(db_jmpbuf); 4664Srgrimes if (db_print_position() != 0) 4674Srgrimes db_printf("\n"); 4684Srgrimes 4694Srgrimes db_printf("db> "); 4704Srgrimes (void) db_read_line(); 4714Srgrimes 47218296Sbde db_command(&db_last_command, db_command_table, 47378161Speter SET_BEGIN(db_cmd_set), SET_LIMIT(db_cmd_set)); 4744Srgrimes } 4754Srgrimes} 4764Srgrimes 4774Srgrimesvoid 4784Srgrimesdb_error(s) 479103746Smarkm const char *s; 4804Srgrimes{ 4814Srgrimes if (s) 48279884Skris db_printf("%s", s); 4834Srgrimes db_flush_lex(); 4844Srgrimes longjmp(db_jmpbuf, 1); 4854Srgrimes} 4864Srgrimes 4874Srgrimes 4884Srgrimes/* 4894Srgrimes * Call random function: 4904Srgrimes * !expr(arg,arg,arg) 4914Srgrimes */ 49212515Sphkstatic void 49310348Sbdedb_fncall(dummy1, dummy2, dummy3, dummy4) 49410348Sbde db_expr_t dummy1; 49510348Sbde boolean_t dummy2; 49610348Sbde db_expr_t dummy3; 49710348Sbde char * dummy4; 4984Srgrimes{ 4994Srgrimes db_expr_t fn_addr; 50012473Sbde#define MAXARGS 11 /* XXX only 10 are passed */ 5014Srgrimes db_expr_t args[MAXARGS]; 5024Srgrimes int nargs = 0; 5034Srgrimes db_expr_t retval; 50492756Salfred typedef db_expr_t fcn_10args_t(db_expr_t, db_expr_t, db_expr_t, 50593009Sbde db_expr_t, db_expr_t, db_expr_t, db_expr_t, 50693009Sbde db_expr_t, db_expr_t, db_expr_t); 50712473Sbde fcn_10args_t *func; 5084Srgrimes int t; 5094Srgrimes 5104Srgrimes if (!db_expression(&fn_addr)) { 5114Srgrimes db_printf("Bad function\n"); 5124Srgrimes db_flush_lex(); 5134Srgrimes return; 5144Srgrimes } 51512473Sbde func = (fcn_10args_t *)fn_addr; /* XXX */ 5164Srgrimes 5174Srgrimes t = db_read_token(); 5184Srgrimes if (t == tLPAREN) { 5194Srgrimes if (db_expression(&args[0])) { 5204Srgrimes nargs++; 5214Srgrimes while ((t = db_read_token()) == tCOMMA) { 5224Srgrimes if (nargs == MAXARGS) { 5234Srgrimes db_printf("Too many arguments\n"); 5244Srgrimes db_flush_lex(); 5254Srgrimes return; 5264Srgrimes } 5274Srgrimes if (!db_expression(&args[nargs])) { 5284Srgrimes db_printf("Argument missing\n"); 5294Srgrimes db_flush_lex(); 5304Srgrimes return; 5314Srgrimes } 5324Srgrimes nargs++; 5334Srgrimes } 5344Srgrimes db_unread_token(t); 5354Srgrimes } 5364Srgrimes if (db_read_token() != tRPAREN) { 5374Srgrimes db_printf("?\n"); 5384Srgrimes db_flush_lex(); 5394Srgrimes return; 5404Srgrimes } 5414Srgrimes } 5424Srgrimes db_skip_to_eol(); 5434Srgrimes 5444Srgrimes while (nargs < MAXARGS) { 5454Srgrimes args[nargs++] = 0; 5464Srgrimes } 5474Srgrimes 5484Srgrimes retval = (*func)(args[0], args[1], args[2], args[3], args[4], 5494Srgrimes args[5], args[6], args[7], args[8], args[9] ); 55048407Speter db_printf("%#lr\n", (long)retval); 5514Srgrimes} 55217848Spst 55317848Spst/* Enter GDB remote protocol debugger on the next trap. */ 55417848Spst 555111017Sphkvoid *gdb_arg = NULL; 55646783Sphkcn_getc_t *gdb_getc; 55746783Sphkcn_putc_t *gdb_putc; 55846658Smckusick 55917848Spststatic void 56017848Spstdb_gdb (dummy1, dummy2, dummy3, dummy4) 56117848Spst db_expr_t dummy1; 56217848Spst boolean_t dummy2; 56317848Spst db_expr_t dummy3; 56417848Spst char * dummy4; 56517848Spst{ 56646658Smckusick 567111017Sphk if (gdb_arg == NULL) { 56846658Smckusick db_printf("No gdb port enabled. Set flag 0x80 on desired port\n"); 56946658Smckusick db_printf("in your configuration file (currently sio only).\n"); 57046658Smckusick return; 57146658Smckusick } 57217848Spst boothowto ^= RB_GDB; 57317848Spst 57417848Spst db_printf("Next trap will enter %s\n", 57517848Spst boothowto & RB_GDB ? "GDB remote protocol mode" 57617848Spst : "DDB debugger"); 57717848Spst} 57885944Speter 57985944Speterstatic void 58086998Sdddb_kill(dummy1, dummy2, dummy3, dummy4) 58186998Sdd db_expr_t dummy1; 58286998Sdd boolean_t dummy2; 58386998Sdd db_expr_t dummy3; 58486998Sdd char * dummy4; 58586998Sdd{ 58686998Sdd db_expr_t old_radix, pid, sig; 58786998Sdd struct proc *p; 58886998Sdd 58986998Sdd#define DB_ERROR(f) do { db_printf f; db_flush_lex(); goto out; } while (0) 59086998Sdd 59186998Sdd /* 59286998Sdd * PIDs and signal numbers are typically represented in base 59386998Sdd * 10, so make that the default here. It can, of course, be 59486998Sdd * overridden by specifying a prefix. 59586998Sdd */ 59686998Sdd old_radix = db_radix; 59786998Sdd db_radix = 10; 59886998Sdd /* Retrieve arguments. */ 59986998Sdd if (!db_expression(&sig)) 60086998Sdd DB_ERROR(("Missing signal number\n")); 60186998Sdd if (!db_expression(&pid)) 60286998Sdd DB_ERROR(("Missing process ID\n")); 60386998Sdd db_skip_to_eol(); 60486998Sdd if (sig < 0 || sig > _SIG_MAXSIG) 60586998Sdd DB_ERROR(("Signal number out of range\n")); 60686998Sdd 60786998Sdd /* 60886998Sdd * Find the process in question. allproc_lock is not needed 60986998Sdd * since we're in DDB. 61086998Sdd */ 61186998Sdd /* sx_slock(&allproc_lock); */ 61286998Sdd LIST_FOREACH(p, &allproc, p_list) 61386998Sdd if (p->p_pid == pid) 61486998Sdd break; 61586998Sdd /* sx_sunlock(&allproc_lock); */ 61686998Sdd if (p == NULL) 61789442Smjacob DB_ERROR(("Can't find process with pid %ld\n", (long) pid)); 61886998Sdd 61986998Sdd /* If it's already locked, bail; otherwise, do the deed. */ 62086998Sdd if (PROC_TRYLOCK(p) == 0) 62189442Smjacob DB_ERROR(("Can't lock process with pid %ld\n", (long) pid)); 62286998Sdd else { 62386998Sdd psignal(p, sig); 62486998Sdd PROC_UNLOCK(p); 62586998Sdd } 62686998Sdd 62786998Sddout: 62886998Sdd db_radix = old_radix; 62986998Sdd#undef DB_ERROR 63086998Sdd} 63186998Sdd 63286998Sddstatic void 63385944Speterdb_reset(dummy1, dummy2, dummy3, dummy4) 63485944Speter db_expr_t dummy1; 63585944Speter boolean_t dummy2; 63685944Speter db_expr_t dummy3; 63785944Speter char * dummy4; 63885944Speter{ 63985944Speter 64085944Speter cpu_reset(); 64185944Speter} 642