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src/sys/ddb/db_command.c

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/* $OpenBSD: db_command.c,v 1.101 2024/05/13 01:15:50 jsg Exp $ */
/* $NetBSD: db_command.c,v 1.20 1996/03/30 22:30:05 christos Exp $ */
/*
* Mach Operating System
* Copyright (c) 1993,1992,1991,1990 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
* Command dispatcher.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/reboot.h>
#include <sys/extent.h>
#include <sys/pool.h>
#include <sys/msgbuf.h>
#include <sys/malloc.h>
#include <sys/mount.h>
#include <uvm/uvm_extern.h>
#include <machine/db_machdep.h> /* type definitions */
#include <ddb/db_access.h>
#include <ddb/db_lex.h>
#include <ddb/db_output.h>
#include <ddb/db_command.h>
#include <ddb/db_break.h>
#include <ddb/db_watch.h>
#include <ddb/db_run.h>
#include <ddb/db_sym.h>
#include <ddb/db_var.h>
#include <ddb/db_variables.h>
#include <ddb/db_interface.h>
#include <ddb/db_extern.h>
#include <netinet/ip_ipsp.h>
#include <uvm/uvm_ddb.h>
/*
* Exported global variables
*/
int db_cmd_loop_done;
label_t *db_recover;
/*
* if 'ed' style: 'dot' is set at start of last item printed,
* and '+' points to next line.
* Otherwise: 'dot' points to next item, '..' points to last.
*/
int db_ed_style = 1;
vaddr_t db_dot; /* current location */
vaddr_t db_last_addr; /* last explicit address typed */
vaddr_t db_prev; /* last address examined
or written */
vaddr_t db_next; /* next address to be examined
or written */
int db_cmd_search(char *, const struct db_command *,
const struct db_command **);
void db_cmd_list(const struct db_command *);
void db_ctf_pprint_cmd(db_expr_t, int, db_expr_t,char *);
void db_map_print_cmd(db_expr_t, int, db_expr_t, char *);
void db_buf_print_cmd(db_expr_t, int, db_expr_t, char *);
void db_malloc_print_cmd(db_expr_t, int, db_expr_t, char *);
void db_mbuf_print_cmd(db_expr_t, int, db_expr_t, char *);
void db_mount_print_cmd(db_expr_t, int, db_expr_t, char *);
void db_show_all_mounts(db_expr_t, int, db_expr_t, char *);
void db_show_all_vnodes(db_expr_t, int, db_expr_t, char *);
void db_show_all_bufs(db_expr_t, int, db_expr_t, char *);
void db_show_all_tdbs(db_expr_t, int, db_expr_t, char *);
void db_object_print_cmd(db_expr_t, int, db_expr_t, char *);
void db_page_print_cmd(db_expr_t, int, db_expr_t, char *);
void db_extent_print_cmd(db_expr_t, int, db_expr_t, char *);
void db_pool_print_cmd(db_expr_t, int, db_expr_t, char *);
void db_proc_print_cmd(db_expr_t, int, db_expr_t, char *);
void db_uvmexp_print_cmd(db_expr_t, int, db_expr_t, char *);
void db_tdb_print_cmd(db_expr_t, int, db_expr_t, char *);
void db_vnode_print_cmd(db_expr_t, int, db_expr_t, char *);
void db_nfsreq_print_cmd(db_expr_t, int, db_expr_t, char *);
void db_nfsnode_print_cmd(db_expr_t, int, db_expr_t, char *);
void db_swap_print_cmd(db_expr_t, int, db_expr_t, char *);
void db_help_cmd(db_expr_t, int, db_expr_t, char *);
void db_fncall(db_expr_t, int, db_expr_t, char *);
void db_boot_sync_cmd(db_expr_t, int, db_expr_t, char *);
void db_boot_crash_cmd(db_expr_t, int, db_expr_t, char *);
void db_boot_dump_cmd(db_expr_t, int, db_expr_t, char *);
void db_boot_halt_cmd(db_expr_t, int, db_expr_t, char *);
void db_boot_reboot_cmd(db_expr_t, int, db_expr_t, char *);
void db_boot_poweroff_cmd(db_expr_t, int, db_expr_t, char *);
void db_stack_trace_cmd(db_expr_t, int, db_expr_t, char *);
void db_dmesg_cmd(db_expr_t, int, db_expr_t, char *);
void db_show_panic_cmd(db_expr_t, int, db_expr_t, char *);
void db_bcstats_print_cmd(db_expr_t, int, db_expr_t, char *);
void db_ctf_show_struct(db_expr_t, int, db_expr_t, char *);
void db_show_regs(db_expr_t, int, db_expr_t, char *);
void db_write_cmd(db_expr_t, int, db_expr_t, char *);
void db_witness_display(db_expr_t, int, db_expr_t, char *);
void db_witness_list(db_expr_t, int, db_expr_t, char *);
void db_witness_list_all(db_expr_t, int, db_expr_t, char *);
/*
* Utility routine - discard tokens through end-of-line.
*/
void
db_skip_to_eol(void)
{
int t;
do {
t = db_read_token();
} while (t != tEOL);
}
/*
* Results of command search.
*/
#define CMD_UNIQUE 0
#define CMD_FOUND 1
#define CMD_NONE 2
#define CMD_AMBIGUOUS 3
/*
* Search for command prefix.
*/
int
db_cmd_search(char *name, const struct db_command *table,
const struct db_command **cmdp)
{
const struct db_command *cmd;
int result = CMD_NONE;
for (cmd = table; cmd->name != 0; cmd++) {
char *lp = name, *rp = cmd->name;
int c;
while ((c = *lp) == *rp) {
if (c == 0) {
/* complete match */
*cmdp = cmd;
return (CMD_UNIQUE);
}
lp++;
rp++;
}
if (c == 0) {
/* end of name, not end of command - partial match */
if (result == CMD_FOUND) {
result = CMD_AMBIGUOUS;
/* but keep looking for a full match -
this lets us match single letters */
} else {
*cmdp = cmd;
result = CMD_FOUND;
}
}
}
return (result);
}
void
db_cmd_list(const struct db_command *table)
{
const struct db_command *cmd;
for (cmd = table; cmd->name != 0; cmd++) {
db_printf("%-12s", cmd->name);
db_end_line(12);
}
}
void
db_command(const struct db_command **last_cmdp,
const struct db_command *cmd_table)
{
const struct db_command *cmd;
char modif[TOK_STRING_SIZE];
db_expr_t addr, count;
int t, result, have_addr = 0;
t = db_read_token();
if (t == tEOL) {
/* empty line repeats last command, at 'next' */
cmd = *last_cmdp;
addr = (db_expr_t)db_next;
have_addr = 0;
count = 1;
modif[0] = '\0';
} else if (t == tEXCL) {
db_fncall(0, 0, 0, NULL);
return;
} else if (t != tIDENT) {
db_printf("?\n");
db_flush_lex();
return;
} else {
/* Search for command */
while (cmd_table) {
result = db_cmd_search(db_tok_string,
cmd_table, &cmd);
switch (result) {
case CMD_NONE:
db_printf("No such command\n");
db_flush_lex();
return;
case CMD_AMBIGUOUS:
db_printf("Ambiguous\n");
db_flush_lex();
return;
default:
break;
}
if ((cmd_table = cmd->more) != 0) {
t = db_read_token();
if (t != tIDENT) {
db_cmd_list(cmd_table);
db_flush_lex();
return;
}
}
}
if ((cmd->flag & CS_OWN) == 0) {
/*
* Standard syntax:
* command [/modifier] [addr] [,count]
*/
t = db_read_token();
if (t == tSLASH) {
t = db_read_token();
if (t != tIDENT) {
db_printf("Bad modifier\n");
db_flush_lex();
return;
}
db_strlcpy(modif, db_tok_string, sizeof(modif));
} else {
db_unread_token(t);
modif[0] = '\0';
}
if (db_expression(&addr)) {
db_dot = (vaddr_t) addr;
db_last_addr = db_dot;
have_addr = 1;
} else {
addr = (db_expr_t) db_dot;
have_addr = 0;
}
t = db_read_token();
if (t == tCOMMA) {
if (!db_expression(&count)) {
db_printf("Count missing\n");
db_flush_lex();
return;
}
} else {
db_unread_token(t);
count = -1;
}
if ((cmd->flag & CS_MORE) == 0)
db_skip_to_eol();
}
}
*last_cmdp = cmd;
if (cmd != 0) {
/* Execute the command. */
(*cmd->fcn)(addr, have_addr, count, modif);
if (cmd->flag & CS_SET_DOT) {
/*
* If command changes dot, set dot to
* previous address displayed (if 'ed' style).
*/
if (db_ed_style)
db_dot = db_prev;
else
db_dot = db_next;
}
} else {
/*
* If command does not change dot,
* set 'next' location to be the same.
*/
db_next = db_dot;
}
}
void
db_buf_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
{
int full = 0;
if (modif[0] == 'f')
full = 1;
vfs_buf_print((void *) addr, full, db_printf);
}
void
db_map_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
{
int full = 0;
if (modif[0] == 'f')
full = 1;
uvm_map_printit((struct vm_map *) addr, full, db_printf);
}
void
db_malloc_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
{
malloc_printit(db_printf);
}
void
db_mbuf_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
{
m_print((void *)addr, db_printf);
}
void
db_socket_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
{
so_print((void *)addr, db_printf);
}
void
db_mount_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
{
int full = 0;
if (modif[0] == 'f')
full = 1;
vfs_mount_print((struct mount *) addr, full, db_printf);
}
void
db_show_all_mounts(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
{
int full = 0;
struct mount *mp;
if (modif[0] == 'f')
full = 1;
TAILQ_FOREACH(mp, &mountlist, mnt_list) {
db_printf("mountpoint %p\n", mp);
vfs_mount_print(mp, full, db_printf);
}
}
extern struct pool vnode_pool;
void
db_show_all_vnodes(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
{
int full = 0;
if (modif[0] == 'f')
full = 1;
pool_walk(&vnode_pool, full, db_printf, vfs_vnode_print);
}
extern struct pool bufpool;
void
db_show_all_bufs(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
{
int full = 0;
if (modif[0] == 'f')
full = 1;
pool_walk(&bufpool, full, db_printf, vfs_buf_print);
}
#ifdef IPSEC
void
db_show_all_tdbs(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
{
int full = 0;
if (modif[0] == 'f')
full = 1;
pool_walk(&tdb_pool, full, db_printf, tdb_printit);
}
#endif
void
db_show_all_routes(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
{
u_int rtableid = 0;
if (have_addr)
rtableid = addr;
if (count == -1)
count = 1;
while (count--) {
if (modif[0] != 'I')
db_show_rtable(AF_INET, rtableid);
if (modif[0] != 'i')
db_show_rtable(AF_INET6, rtableid);
rtableid++;
}
}
void
db_show_route(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
{
db_show_rtentry((void *)addr, NULL, -1);
}
void
db_object_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
{
int full = 0;
if (modif[0] == 'f')
full = 1;
uvm_object_printit((struct uvm_object *) addr, full, db_printf);
}
void
db_page_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
{
int full = 0;
if (modif[0] == 'f')
full = 1;
uvm_page_printit((struct vm_page *) addr, full, db_printf);
}
void
db_vnode_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
{
int full = 0;
if (modif[0] == 'f')
full = 1;
vfs_vnode_print((void *)addr, full, db_printf);
}
#ifdef NFSCLIENT
void
db_nfsreq_print_cmd(db_expr_t addr, int have_addr, db_expr_t count,
char *modif)
{
int full = 0;
if (modif[0] == 'f')
full = 1;
nfs_request_print((void *)addr, full, db_printf);
}
void
db_nfsnode_print_cmd(db_expr_t addr, int have_addr, db_expr_t count,
char *modif)
{
int full = 0;
if (modif[0] == 'f')
full = 1;
nfs_node_print((void *)addr, full, db_printf);
}
#endif
void
db_swap_print_cmd(db_expr_t addr, int have_addr, db_expr_t count,
char *modif)
{
swap_print_all(db_printf);
}
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 */
}
void
db_extent_print_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
{
extent_print_all();
}
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);
}
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;
if (modif[0] == 't') {
addr = (db_expr_t)tfind((pid_t)addr);
if (addr == 0) {
db_printf("not found\n");
return;
}
}
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
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 *, ...));
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 },
{ "clockintr", db_show_all_clockintr, 0, NULL },
{ "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)
*/
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.
*/
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();
}
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