1/* $NetBSD: db_lwp.c,v 1.7 2011/04/12 08:42:12 mrg Exp $ */
2
3/*-
4 * Copyright (c) 2009 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Andrew Doran.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD: db_lwp.c,v 1.7 2011/04/12 08:42:12 mrg Exp $");
34
35#ifndef _KERNEL
36#include <stdbool.h>
37#endif
38
39#include <sys/param.h>
40#include <sys/cpu.h>
41#include <sys/proc.h>
42#include <sys/cpu.h>
43
44#include <machine/pcb.h>
45
46#include <ddb/ddb.h>
47
48lwp_t *
49db_lwp_first(void)
50{
51
52 return db_read_ptr("alllwp");
53}
54
55lwp_t *
56db_lwp_next(lwp_t *l)
57{
58
59 db_read_bytes((db_addr_t)&l->l_list.le_next, sizeof(l), (char *)&l);
60 return l;
61}
62
63void
64db_lwp_whatis(uintptr_t addr, void (*pr)(const char *, ...))
65{
66 uintptr_t stack;
67 lwp_t l, *lp;
68
69 for (lp = db_lwp_first(); lp != NULL; lp = db_lwp_next(lp)) {
70 db_read_bytes((db_addr_t)lp, sizeof(l), (char *)&l);
71 stack = (uintptr_t)KSTACK_LOWEST_ADDR((&l));
72 if (addr < stack || stack + KSTACK_SIZE <= addr) {
73 continue;
74 }
75 (*pr)("%p is %p+%zu, LWP %p's stack\n",
76 (void *)addr, (void *)stack,
77 (size_t)(addr - stack), lp);
78 }
79}
80