xref: /freebsd/sys/ddb/db_command.c (revision 19e9205a23a412d9e48707fc012db23116ccf282)
1dd3cb568SWarner Losh /*-
25b81b6b3SRodney W. Grimes  * Mach Operating System
35b81b6b3SRodney W. Grimes  * Copyright (c) 1991,1990 Carnegie Mellon University
45b81b6b3SRodney W. Grimes  * All Rights Reserved.
55b81b6b3SRodney W. Grimes  *
65b81b6b3SRodney W. Grimes  * Permission to use, copy, modify and distribute this software and its
75b81b6b3SRodney W. Grimes  * documentation is hereby granted, provided that both the copyright
85b81b6b3SRodney W. Grimes  * notice and this permission notice appear in all copies of the
95b81b6b3SRodney W. Grimes  * software, derivative works or modified versions, and any portions
105b81b6b3SRodney W. Grimes  * thereof, and that both notices appear in supporting documentation.
115b81b6b3SRodney W. Grimes  *
125b81b6b3SRodney W. Grimes  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
135b81b6b3SRodney W. Grimes  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
145b81b6b3SRodney W. Grimes  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
155b81b6b3SRodney W. Grimes  *
165b81b6b3SRodney W. Grimes  * Carnegie Mellon requests users of this software to return to
175b81b6b3SRodney W. Grimes  *
185b81b6b3SRodney W. Grimes  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
195b81b6b3SRodney W. Grimes  *  School of Computer Science
205b81b6b3SRodney W. Grimes  *  Carnegie Mellon University
215b81b6b3SRodney W. Grimes  *  Pittsburgh PA 15213-3890
225b81b6b3SRodney W. Grimes  *
235b81b6b3SRodney W. Grimes  * any improvements or extensions that they make and grant Carnegie the
245b81b6b3SRodney W. Grimes  * rights to redistribute these changes.
255b81b6b3SRodney W. Grimes  */
265b81b6b3SRodney W. Grimes /*
275b81b6b3SRodney W. Grimes  *	Author: David B. Golub, Carnegie Mellon University
285b81b6b3SRodney W. Grimes  *	Date:	7/90
295b81b6b3SRodney W. Grimes  */
305b81b6b3SRodney W. Grimes /*
315b81b6b3SRodney W. Grimes  * Command dispatcher.
325b81b6b3SRodney W. Grimes  */
33753960f7SDavid E. O'Brien 
34753960f7SDavid E. O'Brien #include <sys/cdefs.h>
35753960f7SDavid E. O'Brien __FBSDID("$FreeBSD$");
36753960f7SDavid E. O'Brien 
37f540b106SGarrett Wollman #include <sys/param.h>
380ec81012SJohn Polstra #include <sys/linker_set.h>
3919d2c78fSDima Dorfman #include <sys/lock.h>
4037224cd3SMarcel Moolenaar #include <sys/kdb.h>
4119d2c78fSDima Dorfman #include <sys/mutex.h>
4219d2c78fSDima Dorfman #include <sys/proc.h>
43ad146781SPaul Traina #include <sys/reboot.h>
4419d2c78fSDima Dorfman #include <sys/signalvar.h>
45f540b106SGarrett Wollman #include <sys/systm.h>
46ce9edcf5SPoul-Henning Kamp #include <sys/cons.h>
4774cc032bSPoul-Henning Kamp #include <sys/watchdog.h>
483000820aSPoul-Henning Kamp 
495ccbc3ccSBruce Evans #include <ddb/ddb.h>
50058284fcSBruce Evans #include <ddb/db_command.h>
515b81b6b3SRodney W. Grimes #include <ddb/db_lex.h>
525b81b6b3SRodney W. Grimes #include <ddb/db_output.h>
535b81b6b3SRodney W. Grimes 
5426502503SMarcel Moolenaar #include <machine/cpu.h>
550b1ae809SJulian Elischer #include <machine/setjmp.h>
565b81b6b3SRodney W. Grimes 
575b81b6b3SRodney W. Grimes /*
585b81b6b3SRodney W. Grimes  * Exported global variables
595b81b6b3SRodney W. Grimes  */
605b81b6b3SRodney W. Grimes boolean_t	db_cmd_loop_done;
615b81b6b3SRodney W. Grimes db_addr_t	db_dot;
625b81b6b3SRodney W. Grimes db_addr_t	db_last_addr;
635b81b6b3SRodney W. Grimes db_addr_t	db_prev;
645b81b6b3SRodney W. Grimes db_addr_t	db_next;
65f41325dbSPeter Wemm 
66f41325dbSPeter Wemm SET_DECLARE(db_cmd_set, struct command);
67f41325dbSPeter Wemm SET_DECLARE(db_show_cmd_set, struct command);
685b81b6b3SRodney W. Grimes 
69f73a856dSPoul-Henning Kamp static db_cmdfcn_t	db_fncall;
70f3be7cb3SMarcel Moolenaar static db_cmdfcn_t	db_gdb;
7119d2c78fSDima Dorfman static db_cmdfcn_t	db_kill;
725370c3b6SPeter Wemm static db_cmdfcn_t	db_reset;
73fd32d93bSMarcel Moolenaar static db_cmdfcn_t	db_stack_trace;
74a7ad956bSRobert Watson static db_cmdfcn_t	db_stack_trace_all;
7574cc032bSPoul-Henning Kamp static db_cmdfcn_t	db_watchdog;
76ad146781SPaul Traina 
77cec9a4bfSDavid E. O'Brien /*
78cec9a4bfSDavid E. O'Brien  * 'show' commands
79cec9a4bfSDavid E. O'Brien  */
80cec9a4bfSDavid E. O'Brien 
81cec9a4bfSDavid E. O'Brien static struct command db_show_all_cmds[] = {
82cec9a4bfSDavid E. O'Brien 	{ "procs",	db_ps,			0,	0 },
83cec9a4bfSDavid E. O'Brien 	{ (char *)0 }
84cec9a4bfSDavid E. O'Brien };
85cec9a4bfSDavid E. O'Brien 
86e1e31c0eSJohn Baldwin static struct command_table db_show_all_table = {
87e1e31c0eSJohn Baldwin 	db_show_all_cmds
88e1e31c0eSJohn Baldwin };
89e1e31c0eSJohn Baldwin 
90cec9a4bfSDavid E. O'Brien static struct command db_show_cmds[] = {
91e1e31c0eSJohn Baldwin 	{ "all",	0,			0,	&db_show_all_table },
92cec9a4bfSDavid E. O'Brien 	{ "registers",	db_show_regs,		0,	0 },
93cec9a4bfSDavid E. O'Brien 	{ "breaks",	db_listbreak_cmd, 	0,	0 },
94cec9a4bfSDavid E. O'Brien 	{ "threads",	db_show_threads,	0,	0 },
95cec9a4bfSDavid E. O'Brien 	{ (char *)0, }
96cec9a4bfSDavid E. O'Brien };
97cec9a4bfSDavid E. O'Brien 
98e1e31c0eSJohn Baldwin static struct command_table db_show_table = {
99e1e31c0eSJohn Baldwin 	db_show_cmds,
100e1e31c0eSJohn Baldwin 	SET_BEGIN(db_show_cmd_set),
101e1e31c0eSJohn Baldwin 	SET_LIMIT(db_show_cmd_set)
102e1e31c0eSJohn Baldwin };
103e1e31c0eSJohn Baldwin 
104e1e31c0eSJohn Baldwin static struct command db_commands[] = {
105cec9a4bfSDavid E. O'Brien 	{ "print",	db_print_cmd,		0,	0 },
106cec9a4bfSDavid E. O'Brien 	{ "p",		db_print_cmd,		0,	0 },
107cec9a4bfSDavid E. O'Brien 	{ "examine",	db_examine_cmd,		CS_SET_DOT, 0 },
108cec9a4bfSDavid E. O'Brien 	{ "x",		db_examine_cmd,		CS_SET_DOT, 0 },
109cec9a4bfSDavid E. O'Brien 	{ "search",	db_search_cmd,		CS_OWN|CS_SET_DOT, 0 },
110cec9a4bfSDavid E. O'Brien 	{ "set",	db_set_cmd,		CS_OWN,	0 },
111cec9a4bfSDavid E. O'Brien 	{ "write",	db_write_cmd,		CS_MORE|CS_SET_DOT, 0 },
112cec9a4bfSDavid E. O'Brien 	{ "w",		db_write_cmd,		CS_MORE|CS_SET_DOT, 0 },
113cec9a4bfSDavid E. O'Brien 	{ "delete",	db_delete_cmd,		0,	0 },
114cec9a4bfSDavid E. O'Brien 	{ "d",		db_delete_cmd,		0,	0 },
115cec9a4bfSDavid E. O'Brien 	{ "break",	db_breakpoint_cmd,	0,	0 },
116cec9a4bfSDavid E. O'Brien 	{ "dwatch",	db_deletewatch_cmd,	0,	0 },
117cec9a4bfSDavid E. O'Brien 	{ "watch",	db_watchpoint_cmd,	CS_MORE,0 },
118cec9a4bfSDavid E. O'Brien 	{ "dhwatch",	db_deletehwatch_cmd,	0,      0 },
119cec9a4bfSDavid E. O'Brien 	{ "hwatch",	db_hwatchpoint_cmd,	0,      0 },
120cec9a4bfSDavid E. O'Brien 	{ "step",	db_single_step_cmd,	0,	0 },
121cec9a4bfSDavid E. O'Brien 	{ "s",		db_single_step_cmd,	0,	0 },
122cec9a4bfSDavid E. O'Brien 	{ "continue",	db_continue_cmd,	0,	0 },
123cec9a4bfSDavid E. O'Brien 	{ "c",		db_continue_cmd,	0,	0 },
124cec9a4bfSDavid E. O'Brien 	{ "until",	db_trace_until_call_cmd,0,	0 },
125cec9a4bfSDavid E. O'Brien 	{ "next",	db_trace_until_matching_cmd,0,	0 },
126cec9a4bfSDavid E. O'Brien 	{ "match",	db_trace_until_matching_cmd,0,	0 },
127cec9a4bfSDavid E. O'Brien 	{ "trace",	db_stack_trace,		CS_OWN,	0 },
1283924da21SJohn Baldwin 	{ "alltrace",	db_stack_trace_all,	0,	0 },
129cec9a4bfSDavid E. O'Brien 	{ "where",	db_stack_trace,		CS_OWN,	0 },
1303924da21SJohn Baldwin 	{ "bt",		db_stack_trace,		CS_OWN,	0 },
131cec9a4bfSDavid E. O'Brien 	{ "call",	db_fncall,		CS_OWN,	0 },
132e1e31c0eSJohn Baldwin 	{ "show",	0,			0,	&db_show_table },
133cec9a4bfSDavid E. O'Brien 	{ "ps",		db_ps,			0,	0 },
134cec9a4bfSDavid E. O'Brien 	{ "gdb",	db_gdb,			0,	0 },
135cec9a4bfSDavid E. O'Brien 	{ "reset",	db_reset,		0,	0 },
136cec9a4bfSDavid E. O'Brien 	{ "kill",	db_kill,		CS_OWN,	0 },
137cec9a4bfSDavid E. O'Brien 	{ "watchdog",	db_watchdog,		0,	0 },
138cec9a4bfSDavid E. O'Brien 	{ "thread",	db_set_thread,		CS_OWN,	0 },
139cec9a4bfSDavid E. O'Brien 	{ (char *)0, }
140cec9a4bfSDavid E. O'Brien };
141cec9a4bfSDavid E. O'Brien 
142e1e31c0eSJohn Baldwin static struct command_table db_command_table = {
143e1e31c0eSJohn Baldwin 	db_commands,
144e1e31c0eSJohn Baldwin 	SET_BEGIN(db_cmd_set),
145e1e31c0eSJohn Baldwin 	SET_LIMIT(db_cmd_set)
146e1e31c0eSJohn Baldwin };
147e1e31c0eSJohn Baldwin 
148cec9a4bfSDavid E. O'Brien static struct command	*db_last_command = 0;
1496337f4efSBruce Evans 
1505b81b6b3SRodney W. Grimes /*
1515b81b6b3SRodney W. Grimes  * if 'ed' style: 'dot' is set at start of last item printed,
1525b81b6b3SRodney W. Grimes  * and '+' points to next line.
1535b81b6b3SRodney W. Grimes  * Otherwise: 'dot' points to next item, '..' points to last.
1545b81b6b3SRodney W. Grimes  */
155f73a856dSPoul-Henning Kamp static boolean_t	db_ed_style = TRUE;
1565b81b6b3SRodney W. Grimes 
1575b81b6b3SRodney W. Grimes /*
1585b81b6b3SRodney W. Grimes  * Utility routine - discard tokens through end-of-line.
1595b81b6b3SRodney W. Grimes  */
1605b81b6b3SRodney W. Grimes void
1615b81b6b3SRodney W. Grimes db_skip_to_eol()
1625b81b6b3SRodney W. Grimes {
1635b81b6b3SRodney W. Grimes 	int	t;
1645b81b6b3SRodney W. Grimes 	do {
1655b81b6b3SRodney W. Grimes 	    t = db_read_token();
1665b81b6b3SRodney W. Grimes 	} while (t != tEOL);
1675b81b6b3SRodney W. Grimes }
1685b81b6b3SRodney W. Grimes 
1695b81b6b3SRodney W. Grimes /*
1705b81b6b3SRodney W. Grimes  * Results of command search.
1715b81b6b3SRodney W. Grimes  */
1725b81b6b3SRodney W. Grimes #define	CMD_UNIQUE	0
1735b81b6b3SRodney W. Grimes #define	CMD_FOUND	1
1745b81b6b3SRodney W. Grimes #define	CMD_NONE	2
1755b81b6b3SRodney W. Grimes #define	CMD_AMBIGUOUS	3
1765b81b6b3SRodney W. Grimes #define	CMD_HELP	4
1775b81b6b3SRodney W. Grimes 
178e1e31c0eSJohn Baldwin static void	db_cmd_match(char *name, struct command *cmd,
179e1e31c0eSJohn Baldwin 		    struct command **cmdp, int *resultp);
180e1e31c0eSJohn Baldwin static void	db_cmd_list(struct command_table *table);
181e1e31c0eSJohn Baldwin static int	db_cmd_search(char *name, struct command_table *table,
182e1e31c0eSJohn Baldwin 		    struct command **cmdp);
18314e10f99SAlfred Perlstein static void	db_command(struct command **last_cmdp,
184e1e31c0eSJohn Baldwin 		    struct command_table *cmd_table);
185058284fcSBruce Evans 
1865b81b6b3SRodney W. Grimes /*
187e1e31c0eSJohn Baldwin  * Helper function to match a single command.
1885b81b6b3SRodney W. Grimes  */
189e1e31c0eSJohn Baldwin static void
190e1e31c0eSJohn Baldwin db_cmd_match(name, cmd, cmdp, resultp)
1915b81b6b3SRodney W. Grimes 	char *		name;
1925b81b6b3SRodney W. Grimes 	struct command	*cmd;
193e1e31c0eSJohn Baldwin 	struct command	**cmdp;	/* out */
194e1e31c0eSJohn Baldwin 	int *		resultp;
195e1e31c0eSJohn Baldwin {
196e1e31c0eSJohn Baldwin 	char *lp, *rp;
197e1e31c0eSJohn Baldwin 	int c;
1985b81b6b3SRodney W. Grimes 
1995b81b6b3SRodney W. Grimes 	lp = name;
2005b81b6b3SRodney W. Grimes 	rp = cmd->name;
2015b81b6b3SRodney W. Grimes 	while ((c = *lp) == *rp) {
2025b81b6b3SRodney W. Grimes 		if (c == 0) {
2035b81b6b3SRodney W. Grimes 			/* complete match */
2045b81b6b3SRodney W. Grimes 			*cmdp = cmd;
205e1e31c0eSJohn Baldwin 			*resultp = CMD_UNIQUE;
206e1e31c0eSJohn Baldwin 			return;
2075b81b6b3SRodney W. Grimes 		}
2085b81b6b3SRodney W. Grimes 		lp++;
2095b81b6b3SRodney W. Grimes 		rp++;
2105b81b6b3SRodney W. Grimes 	}
2115b81b6b3SRodney W. Grimes 	if (c == 0) {
2125b81b6b3SRodney W. Grimes 		/* end of name, not end of command -
2135b81b6b3SRodney W. Grimes 		   partial match */
214e1e31c0eSJohn Baldwin 		if (*resultp == CMD_FOUND) {
215e1e31c0eSJohn Baldwin 			*resultp = CMD_AMBIGUOUS;
2165b81b6b3SRodney W. Grimes 			/* but keep looking for a full match -
2175b81b6b3SRodney W. Grimes 			   this lets us match single letters */
218e1e31c0eSJohn Baldwin 		} else {
2195b81b6b3SRodney W. Grimes 			*cmdp = cmd;
220e1e31c0eSJohn Baldwin 			*resultp = CMD_FOUND;
2215b81b6b3SRodney W. Grimes 		}
2225b81b6b3SRodney W. Grimes 	}
2235b81b6b3SRodney W. Grimes }
2246337f4efSBruce Evans 
225e1e31c0eSJohn Baldwin /*
226e1e31c0eSJohn Baldwin  * Search for command prefix.
227e1e31c0eSJohn Baldwin  */
228e1e31c0eSJohn Baldwin static int
229e1e31c0eSJohn Baldwin db_cmd_search(name, table, cmdp)
230e1e31c0eSJohn Baldwin 	char *		name;
231e1e31c0eSJohn Baldwin 	struct command_table *table;
232e1e31c0eSJohn Baldwin 	struct command	**cmdp;	/* out */
233e1e31c0eSJohn Baldwin {
234e1e31c0eSJohn Baldwin 	struct command	*cmd;
235e1e31c0eSJohn Baldwin 	struct command	**aux_cmdp;
236e1e31c0eSJohn Baldwin 	int		result = CMD_NONE;
237e1e31c0eSJohn Baldwin 
238e1e31c0eSJohn Baldwin 	for (cmd = table->table; cmd->name != 0; cmd++) {
239e1e31c0eSJohn Baldwin 		db_cmd_match(name, cmd, cmdp, &result);
240e1e31c0eSJohn Baldwin 		if (result == CMD_UNIQUE)
2416337f4efSBruce Evans 			return (CMD_UNIQUE);
2426337f4efSBruce Evans 	}
243e1e31c0eSJohn Baldwin 	if (table->aux_tablep != NULL)
244e1e31c0eSJohn Baldwin 		for (aux_cmdp = table->aux_tablep;
245e1e31c0eSJohn Baldwin 		     aux_cmdp < table->aux_tablep_end;
246e1e31c0eSJohn Baldwin 		     aux_cmdp++) {
247e1e31c0eSJohn Baldwin 			db_cmd_match(name, *aux_cmdp, cmdp, &result);
248e1e31c0eSJohn Baldwin 			if (result == CMD_UNIQUE)
249e1e31c0eSJohn Baldwin 				return (CMD_UNIQUE);
2506337f4efSBruce Evans 		}
2515b81b6b3SRodney W. Grimes 	if (result == CMD_NONE) {
2525b81b6b3SRodney W. Grimes 		/* check for 'help' */
2535b81b6b3SRodney W. Grimes 		if (name[0] == 'h' && name[1] == 'e'
2545b81b6b3SRodney W. Grimes 		    && name[2] == 'l' && name[3] == 'p')
2555b81b6b3SRodney W. Grimes 			result = CMD_HELP;
2565b81b6b3SRodney W. Grimes 	}
2575b81b6b3SRodney W. Grimes 	return (result);
2585b81b6b3SRodney W. Grimes }
2595b81b6b3SRodney W. Grimes 
260f73a856dSPoul-Henning Kamp static void
261e1e31c0eSJohn Baldwin db_cmd_list(table)
262e1e31c0eSJohn Baldwin 	struct command_table *table;
2635b81b6b3SRodney W. Grimes {
2645b81b6b3SRodney W. Grimes 	register struct command *cmd;
2656337f4efSBruce Evans 	register struct command **aux_cmdp;
2665b81b6b3SRodney W. Grimes 
267e1e31c0eSJohn Baldwin 	for (cmd = table->table; cmd->name != 0; cmd++) {
2685b81b6b3SRodney W. Grimes 	    db_printf("%-12s", cmd->name);
2695b81b6b3SRodney W. Grimes 	    db_end_line();
2705b81b6b3SRodney W. Grimes 	}
271e1e31c0eSJohn Baldwin 	if (table->aux_tablep == NULL)
2726337f4efSBruce Evans 	    return;
273e1e31c0eSJohn Baldwin 	for (aux_cmdp = table->aux_tablep; aux_cmdp < table->aux_tablep_end;
274e1e31c0eSJohn Baldwin 	     aux_cmdp++) {
2756337f4efSBruce Evans 	    db_printf("%-12s", (*aux_cmdp)->name);
2766337f4efSBruce Evans 	    db_end_line();
2776337f4efSBruce Evans 	}
2785b81b6b3SRodney W. Grimes }
2795b81b6b3SRodney W. Grimes 
280f73a856dSPoul-Henning Kamp static void
281e1e31c0eSJohn Baldwin db_command(last_cmdp, cmd_table)
2825b81b6b3SRodney W. Grimes 	struct command	**last_cmdp;	/* IN_OUT */
283e1e31c0eSJohn Baldwin 	struct command_table *cmd_table;
2845b81b6b3SRodney W. Grimes {
2855b81b6b3SRodney W. Grimes 	struct command	*cmd;
2865b81b6b3SRodney W. Grimes 	int		t;
2875b81b6b3SRodney W. Grimes 	char		modif[TOK_STRING_SIZE];
2885b81b6b3SRodney W. Grimes 	db_expr_t	addr, count;
289381fe1aaSGarrett Wollman 	boolean_t	have_addr = FALSE;
2905b81b6b3SRodney W. Grimes 	int		result;
2915b81b6b3SRodney W. Grimes 
2925b81b6b3SRodney W. Grimes 	t = db_read_token();
2935b81b6b3SRodney W. Grimes 	if (t == tEOL) {
2945b81b6b3SRodney W. Grimes 	    /* empty line repeats last command, at 'next' */
2955b81b6b3SRodney W. Grimes 	    cmd = *last_cmdp;
2965b81b6b3SRodney W. Grimes 	    addr = (db_expr_t)db_next;
2975b81b6b3SRodney W. Grimes 	    have_addr = FALSE;
2985b81b6b3SRodney W. Grimes 	    count = 1;
2995b81b6b3SRodney W. Grimes 	    modif[0] = '\0';
3005b81b6b3SRodney W. Grimes 	}
3015b81b6b3SRodney W. Grimes 	else if (t == tEXCL) {
302976794d9SBruce Evans 	    db_fncall((db_expr_t)0, (boolean_t)0, (db_expr_t)0, (char *)0);
3035b81b6b3SRodney W. Grimes 	    return;
3045b81b6b3SRodney W. Grimes 	}
3055b81b6b3SRodney W. Grimes 	else if (t != tIDENT) {
3065b81b6b3SRodney W. Grimes 	    db_printf("?\n");
3075b81b6b3SRodney W. Grimes 	    db_flush_lex();
3085b81b6b3SRodney W. Grimes 	    return;
3095b81b6b3SRodney W. Grimes 	}
3105b81b6b3SRodney W. Grimes 	else {
3115b81b6b3SRodney W. Grimes 	    /*
3125b81b6b3SRodney W. Grimes 	     * Search for command
3135b81b6b3SRodney W. Grimes 	     */
3145b81b6b3SRodney W. Grimes 	    while (cmd_table) {
3155b81b6b3SRodney W. Grimes 		result = db_cmd_search(db_tok_string,
3165b81b6b3SRodney W. Grimes 				       cmd_table,
3175b81b6b3SRodney W. Grimes 				       &cmd);
3185b81b6b3SRodney W. Grimes 		switch (result) {
3195b81b6b3SRodney W. Grimes 		    case CMD_NONE:
3205b81b6b3SRodney W. Grimes 			db_printf("No such command\n");
3215b81b6b3SRodney W. Grimes 			db_flush_lex();
3225b81b6b3SRodney W. Grimes 			return;
3235b81b6b3SRodney W. Grimes 		    case CMD_AMBIGUOUS:
3245b81b6b3SRodney W. Grimes 			db_printf("Ambiguous\n");
3255b81b6b3SRodney W. Grimes 			db_flush_lex();
3265b81b6b3SRodney W. Grimes 			return;
3275b81b6b3SRodney W. Grimes 		    case CMD_HELP:
328e1e31c0eSJohn Baldwin 			db_cmd_list(cmd_table);
3295b81b6b3SRodney W. Grimes 			db_flush_lex();
3305b81b6b3SRodney W. Grimes 			return;
3315b81b6b3SRodney W. Grimes 		    default:
3325b81b6b3SRodney W. Grimes 			break;
3335b81b6b3SRodney W. Grimes 		}
334e1e31c0eSJohn Baldwin 		if ((cmd_table = cmd->more) != NULL) {
3355b81b6b3SRodney W. Grimes 		    t = db_read_token();
3365b81b6b3SRodney W. Grimes 		    if (t != tIDENT) {
337e1e31c0eSJohn Baldwin 			db_cmd_list(cmd_table);
3385b81b6b3SRodney W. Grimes 			db_flush_lex();
3395b81b6b3SRodney W. Grimes 			return;
3405b81b6b3SRodney W. Grimes 		    }
3415b81b6b3SRodney W. Grimes 		}
3425b81b6b3SRodney W. Grimes 	    }
3435b81b6b3SRodney W. Grimes 
3445b81b6b3SRodney W. Grimes 	    if ((cmd->flag & CS_OWN) == 0) {
3455b81b6b3SRodney W. Grimes 		/*
3465b81b6b3SRodney W. Grimes 		 * Standard syntax:
3475b81b6b3SRodney W. Grimes 		 * command [/modifier] [addr] [,count]
3485b81b6b3SRodney W. Grimes 		 */
3495b81b6b3SRodney W. Grimes 		t = db_read_token();
3505b81b6b3SRodney W. Grimes 		if (t == tSLASH) {
3515b81b6b3SRodney W. Grimes 		    t = db_read_token();
3525b81b6b3SRodney W. Grimes 		    if (t != tIDENT) {
3535b81b6b3SRodney W. Grimes 			db_printf("Bad modifier\n");
3545b81b6b3SRodney W. Grimes 			db_flush_lex();
3555b81b6b3SRodney W. Grimes 			return;
3565b81b6b3SRodney W. Grimes 		    }
3575b81b6b3SRodney W. Grimes 		    db_strcpy(modif, db_tok_string);
3585b81b6b3SRodney W. Grimes 		}
3595b81b6b3SRodney W. Grimes 		else {
3605b81b6b3SRodney W. Grimes 		    db_unread_token(t);
3615b81b6b3SRodney W. Grimes 		    modif[0] = '\0';
3625b81b6b3SRodney W. Grimes 		}
3635b81b6b3SRodney W. Grimes 
3645b81b6b3SRodney W. Grimes 		if (db_expression(&addr)) {
3655b81b6b3SRodney W. Grimes 		    db_dot = (db_addr_t) addr;
3665b81b6b3SRodney W. Grimes 		    db_last_addr = db_dot;
3675b81b6b3SRodney W. Grimes 		    have_addr = TRUE;
3685b81b6b3SRodney W. Grimes 		}
3695b81b6b3SRodney W. Grimes 		else {
3705b81b6b3SRodney W. Grimes 		    addr = (db_expr_t) db_dot;
3715b81b6b3SRodney W. Grimes 		    have_addr = FALSE;
3725b81b6b3SRodney W. Grimes 		}
3735b81b6b3SRodney W. Grimes 		t = db_read_token();
3745b81b6b3SRodney W. Grimes 		if (t == tCOMMA) {
3755b81b6b3SRodney W. Grimes 		    if (!db_expression(&count)) {
3765b81b6b3SRodney W. Grimes 			db_printf("Count missing\n");
3775b81b6b3SRodney W. Grimes 			db_flush_lex();
3785b81b6b3SRodney W. Grimes 			return;
3795b81b6b3SRodney W. Grimes 		    }
3805b81b6b3SRodney W. Grimes 		}
3815b81b6b3SRodney W. Grimes 		else {
3825b81b6b3SRodney W. Grimes 		    db_unread_token(t);
3835b81b6b3SRodney W. Grimes 		    count = -1;
3845b81b6b3SRodney W. Grimes 		}
3855b81b6b3SRodney W. Grimes 		if ((cmd->flag & CS_MORE) == 0) {
3865b81b6b3SRodney W. Grimes 		    db_skip_to_eol();
3875b81b6b3SRodney W. Grimes 		}
3885b81b6b3SRodney W. Grimes 	    }
3895b81b6b3SRodney W. Grimes 	}
3905b81b6b3SRodney W. Grimes 	*last_cmdp = cmd;
3915b81b6b3SRodney W. Grimes 	if (cmd != 0) {
3925b81b6b3SRodney W. Grimes 	    /*
3935b81b6b3SRodney W. Grimes 	     * Execute the command.
3945b81b6b3SRodney W. Grimes 	     */
39519e9205aSJohn Baldwin 	    db_enable_pager();
3965b81b6b3SRodney W. Grimes 	    (*cmd->fcn)(addr, have_addr, count, modif);
39719e9205aSJohn Baldwin 	    db_disable_pager();
3985b81b6b3SRodney W. Grimes 
3995b81b6b3SRodney W. Grimes 	    if (cmd->flag & CS_SET_DOT) {
4005b81b6b3SRodney W. Grimes 		/*
4015b81b6b3SRodney W. Grimes 		 * If command changes dot, set dot to
4025b81b6b3SRodney W. Grimes 		 * previous address displayed (if 'ed' style).
4035b81b6b3SRodney W. Grimes 		 */
4045b81b6b3SRodney W. Grimes 		if (db_ed_style) {
4055b81b6b3SRodney W. Grimes 		    db_dot = db_prev;
4065b81b6b3SRodney W. Grimes 		}
4075b81b6b3SRodney W. Grimes 		else {
4085b81b6b3SRodney W. Grimes 		    db_dot = db_next;
4095b81b6b3SRodney W. Grimes 		}
4105b81b6b3SRodney W. Grimes 	    }
4115b81b6b3SRodney W. Grimes 	    else {
4125b81b6b3SRodney W. Grimes 		/*
4135b81b6b3SRodney W. Grimes 		 * If command does not change dot,
4145b81b6b3SRodney W. Grimes 		 * set 'next' location to be the same.
4155b81b6b3SRodney W. Grimes 		 */
4165b81b6b3SRodney W. Grimes 		db_next = db_dot;
4175b81b6b3SRodney W. Grimes 	    }
4185b81b6b3SRodney W. Grimes 	}
4195b81b6b3SRodney W. Grimes }
4205b81b6b3SRodney W. Grimes 
4215b81b6b3SRodney W. Grimes /*
422b7aa38c1SBruce Evans  * At least one non-optional command must be implemented using
423b7aa38c1SBruce Evans  * DB_COMMAND() so that db_cmd_set gets created.  Here is one.
424b7aa38c1SBruce Evans  */
425b7aa38c1SBruce Evans DB_COMMAND(panic, db_panic)
4263eac4884SPoul-Henning Kamp {
427edf8a815SDavid Greenman 	panic("from debugger");
4283eac4884SPoul-Henning Kamp }
4293eac4884SPoul-Henning Kamp 
4303eac4884SPoul-Henning Kamp void
4315b81b6b3SRodney W. Grimes db_command_loop()
4325b81b6b3SRodney W. Grimes {
4335b81b6b3SRodney W. Grimes 	/*
4345b81b6b3SRodney W. Grimes 	 * Initialize 'prev' and 'next' to dot.
4355b81b6b3SRodney W. Grimes 	 */
4365b81b6b3SRodney W. Grimes 	db_prev = db_dot;
4375b81b6b3SRodney W. Grimes 	db_next = db_dot;
4385b81b6b3SRodney W. Grimes 
4395b81b6b3SRodney W. Grimes 	db_cmd_loop_done = 0;
4405b81b6b3SRodney W. Grimes 	while (!db_cmd_loop_done) {
4415b81b6b3SRodney W. Grimes 	    if (db_print_position() != 0)
4425b81b6b3SRodney W. Grimes 		db_printf("\n");
4435b81b6b3SRodney W. Grimes 
4445b81b6b3SRodney W. Grimes 	    db_printf("db> ");
4455b81b6b3SRodney W. Grimes 	    (void) db_read_line();
4465b81b6b3SRodney W. Grimes 
447e1e31c0eSJohn Baldwin 	    db_command(&db_last_command, &db_command_table);
4485b81b6b3SRodney W. Grimes 	}
4495b81b6b3SRodney W. Grimes }
4505b81b6b3SRodney W. Grimes 
4515b81b6b3SRodney W. Grimes void
4525b81b6b3SRodney W. Grimes db_error(s)
453bda9921dSMark Murray 	const char *s;
4545b81b6b3SRodney W. Grimes {
4555b81b6b3SRodney W. Grimes 	if (s)
45658d9a059SKris Kennaway 	    db_printf("%s", s);
4575b81b6b3SRodney W. Grimes 	db_flush_lex();
45837224cd3SMarcel Moolenaar 	kdb_reenter();
4595b81b6b3SRodney W. Grimes }
4605b81b6b3SRodney W. Grimes 
4615b81b6b3SRodney W. Grimes 
4625b81b6b3SRodney W. Grimes /*
4635b81b6b3SRodney W. Grimes  * Call random function:
4645b81b6b3SRodney W. Grimes  * !expr(arg,arg,arg)
4655b81b6b3SRodney W. Grimes  */
466a2aeb24eSMarcel Moolenaar 
467a2aeb24eSMarcel Moolenaar /* The generic implementation supports a maximum of 10 arguments. */
468a2aeb24eSMarcel Moolenaar typedef db_expr_t __db_f(db_expr_t, db_expr_t, db_expr_t, db_expr_t,
469a2aeb24eSMarcel Moolenaar     db_expr_t, db_expr_t, db_expr_t, db_expr_t, db_expr_t, db_expr_t);
470a2aeb24eSMarcel Moolenaar 
471a2aeb24eSMarcel Moolenaar static __inline int
472a2aeb24eSMarcel Moolenaar db_fncall_generic(db_expr_t addr, db_expr_t *rv, int nargs, db_expr_t args[])
473a2aeb24eSMarcel Moolenaar {
474a2aeb24eSMarcel Moolenaar 	__db_f *f = (__db_f *)addr;
475a2aeb24eSMarcel Moolenaar 
476a2aeb24eSMarcel Moolenaar 	if (nargs > 10) {
477a2aeb24eSMarcel Moolenaar 		db_printf("Too many arguments (max 10)\n");
478a2aeb24eSMarcel Moolenaar 		return (0);
479a2aeb24eSMarcel Moolenaar 	}
480a2aeb24eSMarcel Moolenaar 	*rv = (*f)(args[0], args[1], args[2], args[3], args[4], args[5],
481a2aeb24eSMarcel Moolenaar 	    args[6], args[7], args[8], args[9]);
482a2aeb24eSMarcel Moolenaar 	return (1);
483a2aeb24eSMarcel Moolenaar }
484a2aeb24eSMarcel Moolenaar 
485f73a856dSPoul-Henning Kamp static void
486976794d9SBruce Evans db_fncall(dummy1, dummy2, dummy3, dummy4)
487976794d9SBruce Evans 	db_expr_t	dummy1;
488976794d9SBruce Evans 	boolean_t	dummy2;
489976794d9SBruce Evans 	db_expr_t	dummy3;
490976794d9SBruce Evans 	char *		dummy4;
4915b81b6b3SRodney W. Grimes {
4925b81b6b3SRodney W. Grimes 	db_expr_t	fn_addr;
493a2aeb24eSMarcel Moolenaar 	db_expr_t	args[DB_MAXARGS];
4945b81b6b3SRodney W. Grimes 	int		nargs = 0;
4955b81b6b3SRodney W. Grimes 	db_expr_t	retval;
4965b81b6b3SRodney W. Grimes 	int		t;
4975b81b6b3SRodney W. Grimes 
4985b81b6b3SRodney W. Grimes 	if (!db_expression(&fn_addr)) {
4995b81b6b3SRodney W. Grimes 	    db_printf("Bad function\n");
5005b81b6b3SRodney W. Grimes 	    db_flush_lex();
5015b81b6b3SRodney W. Grimes 	    return;
5025b81b6b3SRodney W. Grimes 	}
5035b81b6b3SRodney W. Grimes 
5045b81b6b3SRodney W. Grimes 	t = db_read_token();
5055b81b6b3SRodney W. Grimes 	if (t == tLPAREN) {
5065b81b6b3SRodney W. Grimes 	    if (db_expression(&args[0])) {
5075b81b6b3SRodney W. Grimes 		nargs++;
5085b81b6b3SRodney W. Grimes 		while ((t = db_read_token()) == tCOMMA) {
509a2aeb24eSMarcel Moolenaar 		    if (nargs == DB_MAXARGS) {
510a2aeb24eSMarcel Moolenaar 			db_printf("Too many arguments (max %d)\n", DB_MAXARGS);
5115b81b6b3SRodney W. Grimes 			db_flush_lex();
5125b81b6b3SRodney W. Grimes 			return;
5135b81b6b3SRodney W. Grimes 		    }
5145b81b6b3SRodney W. Grimes 		    if (!db_expression(&args[nargs])) {
5155b81b6b3SRodney W. Grimes 			db_printf("Argument missing\n");
5165b81b6b3SRodney W. Grimes 			db_flush_lex();
5175b81b6b3SRodney W. Grimes 			return;
5185b81b6b3SRodney W. Grimes 		    }
5195b81b6b3SRodney W. Grimes 		    nargs++;
5205b81b6b3SRodney W. Grimes 		}
5215b81b6b3SRodney W. Grimes 		db_unread_token(t);
5225b81b6b3SRodney W. Grimes 	    }
5235b81b6b3SRodney W. Grimes 	    if (db_read_token() != tRPAREN) {
5245b81b6b3SRodney W. Grimes 		db_printf("?\n");
5255b81b6b3SRodney W. Grimes 		db_flush_lex();
5265b81b6b3SRodney W. Grimes 		return;
5275b81b6b3SRodney W. Grimes 	    }
5285b81b6b3SRodney W. Grimes 	}
5295b81b6b3SRodney W. Grimes 	db_skip_to_eol();
5305b81b6b3SRodney W. Grimes 
531a2aeb24eSMarcel Moolenaar 	if (DB_CALL(fn_addr, &retval, nargs, args))
532a2aeb24eSMarcel Moolenaar 		db_printf("= %#lr\n", (long)retval);
5335b81b6b3SRodney W. Grimes }
534ad146781SPaul Traina 
5355370c3b6SPeter Wemm static void
53619d2c78fSDima Dorfman db_kill(dummy1, dummy2, dummy3, dummy4)
53719d2c78fSDima Dorfman 	db_expr_t	dummy1;
53819d2c78fSDima Dorfman 	boolean_t	dummy2;
53919d2c78fSDima Dorfman 	db_expr_t	dummy3;
54019d2c78fSDima Dorfman 	char *		dummy4;
54119d2c78fSDima Dorfman {
54219d2c78fSDima Dorfman 	db_expr_t old_radix, pid, sig;
54319d2c78fSDima Dorfman 	struct proc *p;
54419d2c78fSDima Dorfman 
54519d2c78fSDima Dorfman #define DB_ERROR(f)	do { db_printf f; db_flush_lex(); goto out; } while (0)
54619d2c78fSDima Dorfman 
54719d2c78fSDima Dorfman 	/*
54819d2c78fSDima Dorfman 	 * PIDs and signal numbers are typically represented in base
54919d2c78fSDima Dorfman 	 * 10, so make that the default here.  It can, of course, be
55019d2c78fSDima Dorfman 	 * overridden by specifying a prefix.
55119d2c78fSDima Dorfman 	 */
55219d2c78fSDima Dorfman 	old_radix = db_radix;
55319d2c78fSDima Dorfman 	db_radix = 10;
55419d2c78fSDima Dorfman 	/* Retrieve arguments. */
55519d2c78fSDima Dorfman 	if (!db_expression(&sig))
55619d2c78fSDima Dorfman 		DB_ERROR(("Missing signal number\n"));
55719d2c78fSDima Dorfman 	if (!db_expression(&pid))
55819d2c78fSDima Dorfman 		DB_ERROR(("Missing process ID\n"));
55919d2c78fSDima Dorfman 	db_skip_to_eol();
56019d2c78fSDima Dorfman 	if (sig < 0 || sig > _SIG_MAXSIG)
56119d2c78fSDima Dorfman 		DB_ERROR(("Signal number out of range\n"));
56219d2c78fSDima Dorfman 
56319d2c78fSDima Dorfman 	/*
56419d2c78fSDima Dorfman 	 * Find the process in question.  allproc_lock is not needed
56519d2c78fSDima Dorfman 	 * since we're in DDB.
56619d2c78fSDima Dorfman 	 */
56719d2c78fSDima Dorfman 	/* sx_slock(&allproc_lock); */
56819d2c78fSDima Dorfman 	LIST_FOREACH(p, &allproc, p_list)
56919d2c78fSDima Dorfman 	    if (p->p_pid == pid)
57019d2c78fSDima Dorfman 		    break;
57119d2c78fSDima Dorfman 	/* sx_sunlock(&allproc_lock); */
57219d2c78fSDima Dorfman 	if (p == NULL)
573e30e3e9eSMatt Jacob 		DB_ERROR(("Can't find process with pid %ld\n", (long) pid));
57419d2c78fSDima Dorfman 
57519d2c78fSDima Dorfman 	/* If it's already locked, bail; otherwise, do the deed. */
57619d2c78fSDima Dorfman 	if (PROC_TRYLOCK(p) == 0)
577e30e3e9eSMatt Jacob 		DB_ERROR(("Can't lock process with pid %ld\n", (long) pid));
57819d2c78fSDima Dorfman 	else {
57919d2c78fSDima Dorfman 		psignal(p, sig);
58019d2c78fSDima Dorfman 		PROC_UNLOCK(p);
58119d2c78fSDima Dorfman 	}
58219d2c78fSDima Dorfman 
58319d2c78fSDima Dorfman out:
58419d2c78fSDima Dorfman 	db_radix = old_radix;
58519d2c78fSDima Dorfman #undef DB_ERROR
58619d2c78fSDima Dorfman }
58719d2c78fSDima Dorfman 
58819d2c78fSDima Dorfman static void
5895370c3b6SPeter Wemm db_reset(dummy1, dummy2, dummy3, dummy4)
5905370c3b6SPeter Wemm 	db_expr_t	dummy1;
5915370c3b6SPeter Wemm 	boolean_t	dummy2;
5925370c3b6SPeter Wemm 	db_expr_t	dummy3;
5935370c3b6SPeter Wemm 	char *		dummy4;
5945370c3b6SPeter Wemm {
5955370c3b6SPeter Wemm 
5965370c3b6SPeter Wemm 	cpu_reset();
5975370c3b6SPeter Wemm }
59874cc032bSPoul-Henning Kamp 
59974cc032bSPoul-Henning Kamp static void
60074cc032bSPoul-Henning Kamp db_watchdog(dummy1, dummy2, dummy3, dummy4)
60174cc032bSPoul-Henning Kamp 	db_expr_t	dummy1;
60274cc032bSPoul-Henning Kamp 	boolean_t	dummy2;
60374cc032bSPoul-Henning Kamp 	db_expr_t	dummy3;
60474cc032bSPoul-Henning Kamp 	char *		dummy4;
60574cc032bSPoul-Henning Kamp {
60674cc032bSPoul-Henning Kamp 	int i;
60774cc032bSPoul-Henning Kamp 
60874cc032bSPoul-Henning Kamp 	/*
60974cc032bSPoul-Henning Kamp 	 * XXX: It might make sense to be able to set the watchdog to a
61074cc032bSPoul-Henning Kamp 	 * XXX: timeout here so that failure or hang as a result of subsequent
61174cc032bSPoul-Henning Kamp 	 * XXX: ddb commands could be recovered by a reset.
61274cc032bSPoul-Henning Kamp 	 */
61374cc032bSPoul-Henning Kamp 
61474cc032bSPoul-Henning Kamp 	EVENTHANDLER_INVOKE(watchdog_list, 0, &i);
61574cc032bSPoul-Henning Kamp }
616f3be7cb3SMarcel Moolenaar 
617f3be7cb3SMarcel Moolenaar static void
618f3be7cb3SMarcel Moolenaar db_gdb(db_expr_t dummy1, boolean_t dummy2, db_expr_t dummy3, char *dummy4)
619f3be7cb3SMarcel Moolenaar {
620f3be7cb3SMarcel Moolenaar 
621f3be7cb3SMarcel Moolenaar 	if (kdb_dbbe_select("gdb") != 0)
622f3be7cb3SMarcel Moolenaar 		db_printf("The remote GDB backend could not be selected.\n");
623f3be7cb3SMarcel Moolenaar 	else
624f3be7cb3SMarcel Moolenaar 		db_printf("Step to enter the remote GDB backend.\n");
625f3be7cb3SMarcel Moolenaar }
626fd32d93bSMarcel Moolenaar 
627fd32d93bSMarcel Moolenaar static void
628fd32d93bSMarcel Moolenaar db_stack_trace(db_expr_t tid, boolean_t hastid, db_expr_t count, char *modif)
629fd32d93bSMarcel Moolenaar {
630fd32d93bSMarcel Moolenaar 	struct thread *td;
631fd32d93bSMarcel Moolenaar 	db_expr_t radix;
632a13aca1aSRobert Watson 	pid_t pid;
633fd32d93bSMarcel Moolenaar 	int t;
634fd32d93bSMarcel Moolenaar 
635fd32d93bSMarcel Moolenaar 	/*
636fd32d93bSMarcel Moolenaar 	 * We parse our own arguments. We don't like the default radix.
637fd32d93bSMarcel Moolenaar 	 */
638fd32d93bSMarcel Moolenaar 	radix = db_radix;
639fd32d93bSMarcel Moolenaar 	db_radix = 10;
640fd32d93bSMarcel Moolenaar 	hastid = db_expression(&tid);
641fd32d93bSMarcel Moolenaar 	t = db_read_token();
642fd32d93bSMarcel Moolenaar 	if (t == tCOMMA) {
643fd32d93bSMarcel Moolenaar 		if (!db_expression(&count)) {
644fd32d93bSMarcel Moolenaar 			db_printf("Count missing\n");
645fd32d93bSMarcel Moolenaar 			db_flush_lex();
646fd32d93bSMarcel Moolenaar 			return;
647fd32d93bSMarcel Moolenaar 		}
648fd32d93bSMarcel Moolenaar 	} else {
649fd32d93bSMarcel Moolenaar 		db_unread_token(t);
650fd32d93bSMarcel Moolenaar 		count = -1;
651fd32d93bSMarcel Moolenaar 	}
652fd32d93bSMarcel Moolenaar 	db_skip_to_eol();
653fd32d93bSMarcel Moolenaar 	db_radix = radix;
654fd32d93bSMarcel Moolenaar 
655fd32d93bSMarcel Moolenaar 	if (hastid) {
656fd32d93bSMarcel Moolenaar 		td = kdb_thr_lookup((lwpid_t)tid);
657fd32d93bSMarcel Moolenaar 		if (td == NULL)
658fd32d93bSMarcel Moolenaar 			td = kdb_thr_from_pid((pid_t)tid);
659fd32d93bSMarcel Moolenaar 		if (td == NULL) {
660fd32d93bSMarcel Moolenaar 			db_printf("Thread %d not found\n", (int)tid);
661fd32d93bSMarcel Moolenaar 			return;
662fd32d93bSMarcel Moolenaar 		}
663fd32d93bSMarcel Moolenaar 	} else
664fd32d93bSMarcel Moolenaar 		td = kdb_thread;
665a13aca1aSRobert Watson 	if (td->td_proc != NULL)
666a13aca1aSRobert Watson 		pid = td->td_proc->p_pid;
667a13aca1aSRobert Watson 	else
668a13aca1aSRobert Watson 		pid = -1;
669a13aca1aSRobert Watson 	db_printf("Tracing pid %d tid %ld td %p\n", pid, (long)td->td_tid, td);
670fd32d93bSMarcel Moolenaar 	db_trace_thread(td, count);
671fd32d93bSMarcel Moolenaar }
672a7ad956bSRobert Watson 
673a7ad956bSRobert Watson static void
674a7ad956bSRobert Watson db_stack_trace_all(db_expr_t dummy, boolean_t dummy2, db_expr_t dummy3,
675a7ad956bSRobert Watson     char *dummy4)
676a7ad956bSRobert Watson {
677a7ad956bSRobert Watson 	struct proc *p;
678a7ad956bSRobert Watson 	struct thread *td;
679a7ad956bSRobert Watson 
680cf93bc66SJohn Baldwin 	LIST_FOREACH(p, &allproc, p_list) {
681a7ad956bSRobert Watson 		FOREACH_THREAD_IN_PROC(p, td) {
682a7ad956bSRobert Watson 			db_printf("\nTracing command %s pid %d tid %ld td %p\n",
683a7ad956bSRobert Watson 			    p->p_comm, p->p_pid, (long)td->td_tid, td);
684a7ad956bSRobert Watson 			db_trace_thread(td, -1);
68519e9205aSJohn Baldwin 			if (db_pager_quit)
686da927f93SOlivier Houchard 				return;
687a7ad956bSRobert Watson 		}
688a7ad956bSRobert Watson 	}
689a7ad956bSRobert Watson }
690