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 | |
48 | lwp_t * |
49 | db_lwp_first(void) |
50 | { |
51 | |
52 | return db_read_ptr("alllwp" ); |
53 | } |
54 | |
55 | lwp_t * |
56 | db_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 | |
63 | void |
64 | db_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 | |