986 lines
22 KiB
C
986 lines
22 KiB
C
/* $OpenBSD: db_command.c,v 1.97 2022/11/05 19:29:45 cheloha Exp $ */
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/* $NetBSD: db_command.c,v 1.20 1996/03/30 22:30:05 christos Exp $ */
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/*
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* Mach Operating System
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* Copyright (c) 1993,1992,1991,1990 Carnegie Mellon University
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* All Rights Reserved.
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*
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* Permission to use, copy, modify and distribute this software and its
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* documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
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* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie Mellon
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* the rights to redistribute these changes.
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*/
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/*
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* Command dispatcher.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/proc.h>
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#include <sys/reboot.h>
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#include <sys/extent.h>
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#include <sys/pool.h>
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#include <sys/msgbuf.h>
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#include <sys/malloc.h>
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#include <sys/mount.h>
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#include <uvm/uvm_extern.h>
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#include <machine/db_machdep.h> /* type definitions */
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#include <ddb/db_access.h>
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#include <ddb/db_lex.h>
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#include <ddb/db_output.h>
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#include <ddb/db_command.h>
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#include <ddb/db_break.h>
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#include <ddb/db_watch.h>
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#include <ddb/db_run.h>
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#include <ddb/db_sym.h>
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#include <ddb/db_var.h>
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#include <ddb/db_variables.h>
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#include <ddb/db_interface.h>
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#include <ddb/db_extern.h>
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#include <netinet/ip_ipsp.h>
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#include <uvm/uvm_ddb.h>
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/*
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* Exported global variables
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*/
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int db_cmd_loop_done;
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label_t *db_recover;
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/*
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* if 'ed' style: 'dot' is set at start of last item printed,
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* and '+' points to next line.
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* Otherwise: 'dot' points to next item, '..' points to last.
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*/
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int db_ed_style = 1;
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vaddr_t db_dot; /* current location */
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vaddr_t db_last_addr; /* last explicit address typed */
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vaddr_t db_prev; /* last address examined
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or written */
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vaddr_t db_next; /* next address to be examined
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or written */
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int db_cmd_search(char *, const struct db_command *,
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const struct db_command **);
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void db_cmd_list(const struct db_command *);
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void db_ctf_pprint_cmd(db_expr_t, int, db_expr_t,char *);
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void db_map_print_cmd(db_expr_t, int, db_expr_t, char *);
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void db_buf_print_cmd(db_expr_t, int, db_expr_t, char *);
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void db_malloc_print_cmd(db_expr_t, int, db_expr_t, char *);
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void db_mbuf_print_cmd(db_expr_t, int, db_expr_t, char *);
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void db_mount_print_cmd(db_expr_t, int, db_expr_t, char *);
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void db_show_all_mounts(db_expr_t, int, db_expr_t, char *);
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void db_show_all_vnodes(db_expr_t, int, db_expr_t, char *);
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void db_show_all_bufs(db_expr_t, int, db_expr_t, char *);
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void db_show_all_tdbs(db_expr_t, int, db_expr_t, char *);
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void db_object_print_cmd(db_expr_t, int, db_expr_t, char *);
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void db_page_print_cmd(db_expr_t, int, db_expr_t, char *);
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void db_extent_print_cmd(db_expr_t, int, db_expr_t, char *);
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void db_pool_print_cmd(db_expr_t, int, db_expr_t, char *);
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void db_proc_print_cmd(db_expr_t, int, db_expr_t, char *);
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void db_uvmexp_print_cmd(db_expr_t, int, db_expr_t, char *);
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void db_tdb_print_cmd(db_expr_t, int, db_expr_t, char *);
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void db_vnode_print_cmd(db_expr_t, int, db_expr_t, char *);
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void db_nfsreq_print_cmd(db_expr_t, int, db_expr_t, char *);
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void db_nfsnode_print_cmd(db_expr_t, int, db_expr_t, char *);
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void db_swap_print_cmd(db_expr_t, int, db_expr_t, char *);
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void db_help_cmd(db_expr_t, int, db_expr_t, char *);
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void db_fncall(db_expr_t, int, db_expr_t, char *);
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void db_boot_sync_cmd(db_expr_t, int, db_expr_t, char *);
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void db_boot_crash_cmd(db_expr_t, int, db_expr_t, char *);
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void db_boot_dump_cmd(db_expr_t, int, db_expr_t, char *);
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void db_boot_halt_cmd(db_expr_t, int, db_expr_t, char *);
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void db_boot_reboot_cmd(db_expr_t, int, db_expr_t, char *);
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void db_boot_poweroff_cmd(db_expr_t, int, db_expr_t, char *);
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void db_stack_trace_cmd(db_expr_t, int, db_expr_t, char *);
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void db_dmesg_cmd(db_expr_t, int, db_expr_t, char *);
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void db_show_panic_cmd(db_expr_t, int, db_expr_t, char *);
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void db_bcstats_print_cmd(db_expr_t, int, db_expr_t, char *);
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void db_struct_offset_cmd(db_expr_t, int, db_expr_t, char *);
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void db_ctf_show_struct(db_expr_t, int, db_expr_t, char *);
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void db_show_regs(db_expr_t, int, db_expr_t, char *);
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void db_write_cmd(db_expr_t, int, db_expr_t, char *);
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void db_witness_display(db_expr_t, int, db_expr_t, char *);
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void db_witness_list(db_expr_t, int, db_expr_t, char *);
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void db_witness_list_all(db_expr_t, int, db_expr_t, char *);
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/*
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* Utility routine - discard tokens through end-of-line.
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*/
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void
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db_skip_to_eol(void)
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{
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int t;
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do {
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t = db_read_token();
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} while (t != tEOL);
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}
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/*
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* Results of command search.
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*/
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#define CMD_UNIQUE 0
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#define CMD_FOUND 1
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#define CMD_NONE 2
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#define CMD_AMBIGUOUS 3
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/*
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* Search for command prefix.
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*/
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int
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db_cmd_search(char *name, const struct db_command *table,
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const struct db_command **cmdp)
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{
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const struct db_command *cmd;
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int result = CMD_NONE;
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for (cmd = table; cmd->name != 0; cmd++) {
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char *lp = name, *rp = cmd->name;
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int c;
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while ((c = *lp) == *rp) {
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if (c == 0) {
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/* complete match */
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*cmdp = cmd;
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return (CMD_UNIQUE);
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}
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lp++;
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rp++;
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}
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if (c == 0) {
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/* end of name, not end of command - partial match */
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if (result == CMD_FOUND) {
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result = CMD_AMBIGUOUS;
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/* but keep looking for a full match -
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this lets us match single letters */
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} else {
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*cmdp = cmd;
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result = CMD_FOUND;
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}
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}
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}
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return (result);
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}
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void
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db_cmd_list(const struct db_command *table)
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{
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const struct db_command *cmd;
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for (cmd = table; cmd->name != 0; cmd++) {
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db_printf("%-12s", cmd->name);
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db_end_line(12);
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}
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}
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void
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db_command(const struct db_command **last_cmdp,
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const struct db_command *cmd_table)
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{
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const struct db_command *cmd;
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char modif[TOK_STRING_SIZE];
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db_expr_t addr, count;
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int t, result, have_addr = 0;
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t = db_read_token();
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if (t == tEOL) {
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/* empty line repeats last command, at 'next' */
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cmd = *last_cmdp;
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addr = (db_expr_t)db_next;
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have_addr = 0;
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count = 1;
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modif[0] = '\0';
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} else if (t == tEXCL) {
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db_fncall(0, 0, 0, NULL);
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return;
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} else if (t != tIDENT) {
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db_printf("?\n");
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db_flush_lex();
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return;
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} else {
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/* Search for command */
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while (cmd_table) {
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result = db_cmd_search(db_tok_string,
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cmd_table, &cmd);
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switch (result) {
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case CMD_NONE:
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db_printf("No such command\n");
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db_flush_lex();
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return;
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case CMD_AMBIGUOUS:
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db_printf("Ambiguous\n");
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db_flush_lex();
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return;
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default:
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break;
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}
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if ((cmd_table = cmd->more) != 0) {
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t = db_read_token();
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if (t != tIDENT) {
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db_cmd_list(cmd_table);
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db_flush_lex();
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return;
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}
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}
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}
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if ((cmd->flag & CS_OWN) == 0) {
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/*
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* Standard syntax:
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* command [/modifier] [addr] [,count]
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*/
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t = db_read_token();
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if (t == tSLASH) {
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t = db_read_token();
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if (t != tIDENT) {
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db_printf("Bad modifier\n");
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db_flush_lex();
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return;
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}
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db_strlcpy(modif, db_tok_string, sizeof(modif));
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} else {
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db_unread_token(t);
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modif[0] = '\0';
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}
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if (db_expression(&addr)) {
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db_dot = (vaddr_t) addr;
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db_last_addr = db_dot;
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have_addr = 1;
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} else {
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addr = (db_expr_t) db_dot;
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have_addr = 0;
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}
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t = db_read_token();
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if (t == tCOMMA) {
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if (!db_expression(&count)) {
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db_printf("Count missing\n");
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db_flush_lex();
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return;
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}
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} else {
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db_unread_token(t);
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count = -1;
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}
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if ((cmd->flag & CS_MORE) == 0)
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db_skip_to_eol();
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}
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}
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*last_cmdp = cmd;
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if (cmd != 0) {
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/* Execute the command. */
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(*cmd->fcn)(addr, have_addr, count, modif);
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if (cmd->flag & CS_SET_DOT) {
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/*
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* If command changes dot, set dot to
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* previous address displayed (if 'ed' style).
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*/
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if (db_ed_style)
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db_dot = db_prev;
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else
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db_dot = db_next;
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}
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} else {
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/*
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* If command does not change dot,
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* set 'next' location to be the same.
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*/
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db_next = db_dot;
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}
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}
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/*ARGSUSED*/
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void
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db_buf_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
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{
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int full = 0;
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if (modif[0] == 'f')
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full = 1;
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vfs_buf_print((void *) addr, full, db_printf);
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}
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/*ARGSUSED*/
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void
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db_map_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
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{
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int full = 0;
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if (modif[0] == 'f')
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full = 1;
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uvm_map_printit((struct vm_map *) addr, full, db_printf);
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}
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/*ARGSUSED*/
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void
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db_malloc_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
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{
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malloc_printit(db_printf);
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}
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/*ARGSUSED*/
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void
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db_mbuf_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
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{
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m_print((void *)addr, db_printf);
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}
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/*ARGSUSED*/
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void
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db_socket_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
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{
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so_print((void *)addr, db_printf);
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}
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/*ARGSUSED*/
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void
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db_mount_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
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{
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int full = 0;
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if (modif[0] == 'f')
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full = 1;
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vfs_mount_print((struct mount *) addr, full, db_printf);
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}
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void
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db_show_all_mounts(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
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{
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int full = 0;
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struct mount *mp;
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if (modif[0] == 'f')
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full = 1;
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TAILQ_FOREACH(mp, &mountlist, mnt_list) {
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db_printf("mountpoint %p\n", mp);
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vfs_mount_print(mp, full, db_printf);
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}
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}
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extern struct pool vnode_pool;
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void
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db_show_all_vnodes(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
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{
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int full = 0;
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if (modif[0] == 'f')
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full = 1;
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pool_walk(&vnode_pool, full, db_printf, vfs_vnode_print);
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}
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extern struct pool bufpool;
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void
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db_show_all_bufs(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
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{
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int full = 0;
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if (modif[0] == 'f')
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full = 1;
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pool_walk(&bufpool, full, db_printf, vfs_buf_print);
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}
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#ifdef IPSEC
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void
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db_show_all_tdbs(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
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{
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int full = 0;
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if (modif[0] == 'f')
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full = 1;
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pool_walk(&tdb_pool, full, db_printf, tdb_printit);
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}
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#endif
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void
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db_show_all_routes(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
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{
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u_int rtableid = 0;
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if (have_addr)
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rtableid = addr;
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if (count == -1)
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count = 1;
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while (count--) {
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if (modif[0] != 'I')
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db_show_rtable(AF_INET, rtableid);
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if (modif[0] != 'i')
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db_show_rtable(AF_INET6, rtableid);
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rtableid++;
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}
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}
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void
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db_show_route(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
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{
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db_show_rtentry((void *)addr, NULL, -1);
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}
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/*ARGSUSED*/
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void
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db_object_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
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{
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int full = 0;
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if (modif[0] == 'f')
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full = 1;
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uvm_object_printit((struct uvm_object *) addr, full, db_printf);
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}
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/*ARGSUSED*/
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void
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db_page_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
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{
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int full = 0;
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if (modif[0] == 'f')
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full = 1;
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uvm_page_printit((struct vm_page *) addr, full, db_printf);
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}
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/*ARGSUSED*/
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void
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db_vnode_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
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{
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int full = 0;
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if (modif[0] == 'f')
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full = 1;
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vfs_vnode_print((void *)addr, full, db_printf);
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}
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#ifdef NFSCLIENT
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/*ARGSUSED*/
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void
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db_nfsreq_print_cmd(db_expr_t addr, int have_addr, db_expr_t count,
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char *modif)
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{
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int full = 0;
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if (modif[0] == 'f')
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full = 1;
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nfs_request_print((void *)addr, full, db_printf);
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}
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/*ARGSUSED*/
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void
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db_nfsnode_print_cmd(db_expr_t addr, int have_addr, db_expr_t count,
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char *modif)
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{
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int full = 0;
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if (modif[0] == 'f')
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full = 1;
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nfs_node_print((void *)addr, full, db_printf);
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}
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#endif
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/*ARGSUSED*/
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void
|
|
db_swap_print_cmd(db_expr_t addr, int have_addr, db_expr_t count,
|
|
char *modif)
|
|
{
|
|
swap_print_all(db_printf);
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
void
|
|
db_show_panic_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
|
|
{
|
|
struct cpu_info *ci;
|
|
char *prefix;
|
|
CPU_INFO_ITERATOR cii;
|
|
int panicked = 0;
|
|
|
|
CPU_INFO_FOREACH(cii, ci) {
|
|
if (ci->ci_panicbuf[0] != '\0') {
|
|
prefix = (panicstr == ci->ci_panicbuf) ? "*" : " ";
|
|
db_printf("%scpu%d: %s\n",
|
|
prefix, CPU_INFO_UNIT(ci), ci->ci_panicbuf);
|
|
panicked = 1;
|
|
}
|
|
}
|
|
if (!panicked)
|
|
db_printf("the kernel did not panic\n"); /* yet */
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
void
|
|
db_extent_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
|
|
{
|
|
extent_print_all();
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
void
|
|
db_pool_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
|
|
{
|
|
pool_printit((struct pool *)addr, modif, db_printf);
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
void
|
|
db_proc_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
|
|
{
|
|
if (!have_addr)
|
|
addr = (db_expr_t)curproc;
|
|
|
|
proc_printit((struct proc *)addr, modif, db_printf);
|
|
}
|
|
|
|
#ifdef IPSEC
|
|
void
|
|
db_tdb_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
|
|
{
|
|
int full = 0;
|
|
|
|
if (modif[0] == 'f')
|
|
full = 1;
|
|
|
|
tdb_printit((void *)addr, full, db_printf);
|
|
}
|
|
#endif
|
|
|
|
/*ARGSUSED*/
|
|
void
|
|
db_uvmexp_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
|
|
{
|
|
uvmexp_print(db_printf);
|
|
}
|
|
|
|
void bcstats_print(int (*)(const char *, ...));
|
|
|
|
/*ARGSUSED*/
|
|
void
|
|
db_bcstats_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
|
|
{
|
|
bcstats_print(db_printf);
|
|
}
|
|
|
|
/*
|
|
* 'show' commands
|
|
*/
|
|
|
|
const struct db_command db_show_all_cmds[] = {
|
|
{ "procs", db_show_all_procs, 0, NULL },
|
|
{ "callout", db_show_callout, 0, NULL },
|
|
#ifdef __HAVE_CLOCKINTR
|
|
{ "clockintr", db_show_all_clockintr, 0, NULL },
|
|
#endif
|
|
{ "pools", db_show_all_pools, 0, NULL },
|
|
{ "mounts", db_show_all_mounts, 0, NULL },
|
|
{ "vnodes", db_show_all_vnodes, 0, NULL },
|
|
{ "bufs", db_show_all_bufs, 0, NULL },
|
|
{ "routes", db_show_all_routes, 0, NULL },
|
|
#ifdef NFSCLIENT
|
|
{ "nfsreqs", db_show_all_nfsreqs, 0, NULL },
|
|
{ "nfsnodes", db_show_all_nfsnodes, 0, NULL },
|
|
#endif
|
|
#ifdef IPSEC
|
|
{ "tdbs", db_show_all_tdbs, 0, NULL },
|
|
#endif
|
|
#ifdef WITNESS
|
|
{ "locks", db_witness_list_all, 0, NULL },
|
|
#endif
|
|
{ NULL, NULL, 0, NULL }
|
|
};
|
|
|
|
const struct db_command db_show_cmds[] = {
|
|
{ "all", NULL, 0, db_show_all_cmds },
|
|
{ "bcstats", db_bcstats_print_cmd, 0, NULL },
|
|
{ "breaks", db_listbreak_cmd, 0, NULL },
|
|
{ "buf", db_buf_print_cmd, 0, NULL },
|
|
{ "extents", db_extent_print_cmd, 0, NULL },
|
|
#ifdef WITNESS
|
|
{ "locks", db_witness_list, 0, NULL },
|
|
#endif
|
|
{ "malloc", db_malloc_print_cmd, 0, NULL },
|
|
{ "map", db_map_print_cmd, 0, NULL },
|
|
{ "mbuf", db_mbuf_print_cmd, 0, NULL },
|
|
{ "mount", db_mount_print_cmd, 0, NULL },
|
|
#ifdef NFSCLIENT
|
|
{ "nfsreq", db_nfsreq_print_cmd, 0, NULL },
|
|
{ "nfsnode", db_nfsnode_print_cmd, 0, NULL },
|
|
#endif
|
|
{ "object", db_object_print_cmd, 0, NULL },
|
|
{ "page", db_page_print_cmd, 0, NULL },
|
|
{ "panic", db_show_panic_cmd, 0, NULL },
|
|
{ "pool", db_pool_print_cmd, 0, NULL },
|
|
{ "proc", db_proc_print_cmd, 0, NULL },
|
|
{ "registers", db_show_regs, 0, NULL },
|
|
{ "route", db_show_route, 0, NULL },
|
|
{ "socket", db_socket_print_cmd, 0, NULL },
|
|
{ "struct", db_ctf_show_struct, CS_OWN, NULL },
|
|
{ "swap", db_swap_print_cmd, 0, NULL },
|
|
#ifdef IPSEC
|
|
{ "tdb", db_tdb_print_cmd, 0, NULL },
|
|
#endif
|
|
{ "uvmexp", db_uvmexp_print_cmd, 0, NULL },
|
|
{ "vnode", db_vnode_print_cmd, 0, NULL },
|
|
{ "watches", db_listwatch_cmd, 0, NULL },
|
|
#ifdef WITNESS
|
|
{ "witness", db_witness_display, 0, NULL },
|
|
#endif
|
|
{ NULL, NULL, 0, NULL }
|
|
};
|
|
|
|
const struct db_command db_boot_cmds[] = {
|
|
{ "sync", db_boot_sync_cmd, 0, 0 },
|
|
{ "crash", db_boot_crash_cmd, 0, 0 },
|
|
{ "dump", db_boot_dump_cmd, 0, 0 },
|
|
{ "halt", db_boot_halt_cmd, 0, 0 },
|
|
{ "reboot", db_boot_reboot_cmd, 0, 0 },
|
|
{ "poweroff", db_boot_poweroff_cmd, 0, 0 },
|
|
{ NULL, }
|
|
};
|
|
|
|
const struct db_command db_command_table[] = {
|
|
#ifdef DB_MACHINE_COMMANDS
|
|
/* this must be the first entry, if it exists */
|
|
{ "machine", NULL, 0, db_machine_command_table },
|
|
#endif
|
|
{ "kill", db_kill_cmd, 0, NULL },
|
|
{ "print", db_print_cmd, 0, NULL },
|
|
{ "p", db_print_cmd, 0, NULL },
|
|
{ "pprint", db_ctf_pprint_cmd, CS_OWN, NULL },
|
|
{ "examine", db_examine_cmd, CS_SET_DOT, NULL },
|
|
{ "x", db_examine_cmd, CS_SET_DOT, NULL },
|
|
{ "search", db_search_cmd, CS_OWN|CS_SET_DOT, NULL },
|
|
{ "set", db_set_cmd, CS_OWN, NULL },
|
|
{ "write", db_write_cmd, CS_MORE|CS_SET_DOT, NULL },
|
|
{ "w", db_write_cmd, CS_MORE|CS_SET_DOT, NULL },
|
|
{ "delete", db_delete_cmd, 0, NULL },
|
|
{ "d", db_delete_cmd, 0, NULL },
|
|
{ "break", db_breakpoint_cmd, 0, NULL },
|
|
{ "dwatch", db_deletewatch_cmd, 0, NULL },
|
|
{ "watch", db_watchpoint_cmd, CS_MORE, NULL },
|
|
{ "step", db_single_step_cmd, 0, NULL },
|
|
{ "s", db_single_step_cmd, 0, NULL },
|
|
{ "continue", db_continue_cmd, 0, NULL },
|
|
{ "c", db_continue_cmd, 0, NULL },
|
|
{ "until", db_trace_until_call_cmd,0, NULL },
|
|
{ "next", db_trace_until_matching_cmd,0, NULL },
|
|
{ "match", db_trace_until_matching_cmd,0, NULL },
|
|
{ "trace", db_stack_trace_cmd, 0, NULL },
|
|
{ "bt", db_stack_trace_cmd, 0, NULL },
|
|
{ "call", db_fncall, CS_OWN, NULL },
|
|
{ "ps", db_show_all_procs, 0, NULL },
|
|
{ "callout", db_show_callout, 0, NULL },
|
|
{ "reboot", db_boot_reboot_cmd, 0, NULL },
|
|
{ "show", NULL, 0, db_show_cmds },
|
|
{ "boot", NULL, 0, db_boot_cmds },
|
|
{ "help", db_help_cmd, 0, NULL },
|
|
{ "hangman", db_hangman, 0, NULL },
|
|
{ "dmesg", db_dmesg_cmd, 0, NULL },
|
|
{ NULL, NULL, 0, NULL }
|
|
};
|
|
|
|
const struct db_command *db_last_command = NULL;
|
|
|
|
void
|
|
db_help_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
|
|
{
|
|
db_cmd_list(db_command_table);
|
|
}
|
|
|
|
void
|
|
db_command_loop(void)
|
|
{
|
|
label_t db_jmpbuf;
|
|
label_t *savejmp;
|
|
extern int db_output_line;
|
|
|
|
/*
|
|
* Initialize 'prev' and 'next' to dot.
|
|
*/
|
|
db_prev = db_dot;
|
|
db_next = db_dot;
|
|
|
|
db_cmd_loop_done = 0;
|
|
|
|
savejmp = db_recover;
|
|
db_recover = &db_jmpbuf;
|
|
(void) setjmp(&db_jmpbuf);
|
|
|
|
while (!db_cmd_loop_done) {
|
|
|
|
if (db_print_position() != 0)
|
|
db_printf("\n");
|
|
db_output_line = 0;
|
|
|
|
#ifdef MULTIPROCESSOR
|
|
db_printf("ddb{%d}> ", CPU_INFO_UNIT(curcpu()));
|
|
#else
|
|
db_printf("ddb> ");
|
|
#endif
|
|
(void) db_read_line();
|
|
|
|
db_command(&db_last_command, db_command_table);
|
|
}
|
|
|
|
db_recover = savejmp;
|
|
}
|
|
|
|
void
|
|
db_error(char *s)
|
|
{
|
|
if (s)
|
|
db_printf("%s", s);
|
|
db_flush_lex();
|
|
if (db_recover != NULL)
|
|
longjmp(db_recover);
|
|
}
|
|
|
|
|
|
/*
|
|
* Call random function:
|
|
* !expr(arg,arg,arg)
|
|
*/
|
|
/*ARGSUSED*/
|
|
void
|
|
db_fncall(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
|
|
{
|
|
db_expr_t fn_addr;
|
|
#define MAXARGS 11
|
|
db_expr_t args[MAXARGS];
|
|
int nargs = 0;
|
|
db_expr_t retval;
|
|
db_expr_t (*func)(db_expr_t, ...);
|
|
int t;
|
|
char tmpfmt[28];
|
|
|
|
if (!db_expression(&fn_addr)) {
|
|
db_printf("Bad function\n");
|
|
db_flush_lex();
|
|
return;
|
|
}
|
|
func = (db_expr_t (*)(db_expr_t, ...)) fn_addr;
|
|
|
|
t = db_read_token();
|
|
if (t == tLPAREN) {
|
|
if (db_expression(&args[0])) {
|
|
nargs++;
|
|
while ((t = db_read_token()) == tCOMMA) {
|
|
if (nargs == MAXARGS) {
|
|
db_printf("Too many arguments\n");
|
|
db_flush_lex();
|
|
return;
|
|
}
|
|
if (!db_expression(&args[nargs])) {
|
|
db_printf("Argument missing\n");
|
|
db_flush_lex();
|
|
return;
|
|
}
|
|
nargs++;
|
|
}
|
|
db_unread_token(t);
|
|
}
|
|
if (db_read_token() != tRPAREN) {
|
|
db_printf("?\n");
|
|
db_flush_lex();
|
|
return;
|
|
}
|
|
}
|
|
db_skip_to_eol();
|
|
|
|
while (nargs < MAXARGS)
|
|
args[nargs++] = 0;
|
|
|
|
retval = (*func)(args[0], args[1], args[2], args[3], args[4],
|
|
args[5], args[6], args[7], args[8], args[9]);
|
|
db_printf("%s\n", db_format(tmpfmt, sizeof tmpfmt, retval,
|
|
DB_FORMAT_N, 1, 0));
|
|
}
|
|
|
|
void
|
|
db_reboot(int howto)
|
|
{
|
|
spl0();
|
|
if (!curproc)
|
|
curproc = &proc0;
|
|
reboot(howto);
|
|
}
|
|
|
|
void
|
|
db_boot_sync_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
|
|
{
|
|
db_reboot(RB_AUTOBOOT | RB_TIMEBAD | RB_USERREQ);
|
|
}
|
|
|
|
void
|
|
db_boot_crash_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
|
|
{
|
|
db_reboot(RB_NOSYNC | RB_DUMP | RB_TIMEBAD | RB_USERREQ);
|
|
}
|
|
|
|
void
|
|
db_boot_dump_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
|
|
{
|
|
db_reboot(RB_DUMP | RB_TIMEBAD | RB_USERREQ);
|
|
}
|
|
|
|
void
|
|
db_boot_halt_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
|
|
{
|
|
db_reboot(RB_NOSYNC | RB_HALT | RB_TIMEBAD | RB_USERREQ);
|
|
}
|
|
|
|
void
|
|
db_boot_reboot_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
|
|
{
|
|
boot(RB_RESET | RB_AUTOBOOT | RB_NOSYNC | RB_TIMEBAD | RB_USERREQ);
|
|
}
|
|
|
|
void
|
|
db_boot_poweroff_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
|
|
{
|
|
db_reboot(RB_NOSYNC | RB_HALT | RB_POWERDOWN | RB_TIMEBAD | RB_USERREQ);
|
|
}
|
|
|
|
void
|
|
db_dmesg_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
|
|
{
|
|
int i, off;
|
|
char *p;
|
|
|
|
if (!msgbufp || msgbufp->msg_magic != MSG_MAGIC)
|
|
return;
|
|
off = msgbufp->msg_bufx;
|
|
if (off > msgbufp->msg_bufs)
|
|
off = 0;
|
|
for (i = 0, p = msgbufp->msg_bufc + off;
|
|
i < msgbufp->msg_bufs; i++, p++) {
|
|
if (p >= msgbufp->msg_bufc + msgbufp->msg_bufs)
|
|
p = msgbufp->msg_bufc;
|
|
if (*p != '\0')
|
|
db_putchar(*p);
|
|
}
|
|
db_putchar('\n');
|
|
}
|
|
|
|
void
|
|
db_stack_trace_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
|
|
{
|
|
db_stack_trace_print(addr, have_addr, count, modif, db_printf);
|
|
}
|
|
|
|
void
|
|
db_show_regs(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
|
|
{
|
|
struct db_variable *regp;
|
|
db_expr_t value, offset;
|
|
char * name;
|
|
char tmpfmt[28];
|
|
|
|
for (regp = db_regs; regp < db_eregs; regp++) {
|
|
db_read_variable(regp, &value);
|
|
db_printf("%-12s%s", regp->name,
|
|
db_format(tmpfmt, sizeof tmpfmt,
|
|
(long)value, DB_FORMAT_N, 1, sizeof(long) * 3));
|
|
db_find_xtrn_sym_and_offset((vaddr_t)value, &name, &offset);
|
|
if (name != 0 && offset <= db_maxoff && offset != value) {
|
|
db_printf("\t%s", name);
|
|
if (offset != 0)
|
|
db_printf("+%s",
|
|
db_format(tmpfmt, sizeof tmpfmt,
|
|
(long)offset, DB_FORMAT_R, 1, 0));
|
|
}
|
|
db_printf("\n");
|
|
}
|
|
db_print_loc_and_inst(PC_REGS(&ddb_regs));
|
|
}
|
|
|
|
/*
|
|
* Write to file.
|
|
*/
|
|
/*ARGSUSED*/
|
|
void
|
|
db_write_cmd(db_expr_t address, int have_addr, db_expr_t count, char *modif)
|
|
{
|
|
vaddr_t addr;
|
|
db_expr_t old_value;
|
|
db_expr_t new_value;
|
|
int size, wrote_one = 0;
|
|
char tmpfmt[28];
|
|
|
|
addr = (vaddr_t) address;
|
|
|
|
switch (modif[0]) {
|
|
case 'b':
|
|
size = 1;
|
|
break;
|
|
case 'h':
|
|
size = 2;
|
|
break;
|
|
case 'l':
|
|
case '\0':
|
|
size = 4;
|
|
break;
|
|
#ifdef __LP64__
|
|
case 'q':
|
|
size = 8;
|
|
break;
|
|
#endif
|
|
default:
|
|
size = -1;
|
|
db_error("Unknown size\n");
|
|
/*NOTREACHED*/
|
|
}
|
|
|
|
while (db_expression(&new_value)) {
|
|
old_value = db_get_value(addr, size, 0);
|
|
db_printsym(addr, DB_STGY_ANY, db_printf);
|
|
db_printf("\t\t%s\t", db_format(tmpfmt, sizeof tmpfmt,
|
|
old_value, DB_FORMAT_N, 0, 8));
|
|
db_printf("=\t%s\n", db_format(tmpfmt, sizeof tmpfmt,
|
|
new_value, DB_FORMAT_N, 0, 8));
|
|
db_put_value(addr, size, new_value);
|
|
addr += size;
|
|
|
|
wrote_one = 1;
|
|
}
|
|
|
|
if (!wrote_one) {
|
|
db_error("Nothing written.\n");
|
|
/*NOTREACHED*/
|
|
}
|
|
|
|
db_next = addr;
|
|
db_prev = addr - size;
|
|
|
|
db_skip_to_eol();
|
|
}
|