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0274a8ce | 1 | /* Native debugging support for GNU/Linux (LWP layer). |
10d6c8cd | 2 | |
6aba47ca | 3 | Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 |
10d6c8cd | 4 | Free Software Foundation, Inc. |
0274a8ce MS |
5 | |
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
20 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
0274a8ce | 22 | |
a2f23071 DJ |
23 | #include "target.h" |
24 | ||
0274a8ce MS |
25 | /* Structure describing an LWP. */ |
26 | ||
27 | struct lwp_info | |
28 | { | |
29 | /* The process id of the LWP. This is a combination of the LWP id | |
30 | and overall process id. */ | |
31 | ptid_t ptid; | |
32 | ||
33 | /* Non-zero if this LWP is cloned. In this context "cloned" means | |
34 | that the LWP is reporting to its parent using a signal other than | |
35 | SIGCHLD. */ | |
36 | int cloned; | |
37 | ||
38 | /* Non-zero if we sent this LWP a SIGSTOP (but the LWP didn't report | |
39 | it back yet). */ | |
40 | int signalled; | |
41 | ||
42 | /* Non-zero if this LWP is stopped. */ | |
43 | int stopped; | |
44 | ||
45 | /* Non-zero if this LWP will be/has been resumed. Note that an LWP | |
46 | can be marked both as stopped and resumed at the same time. This | |
47 | happens if we try to resume an LWP that has a wait status | |
48 | pending. We shouldn't let the LWP run until that wait status has | |
49 | been processed, but we should not report that wait status if GDB | |
50 | didn't try to let the LWP run. */ | |
51 | int resumed; | |
52 | ||
53 | /* If non-zero, a pending wait status. */ | |
54 | int status; | |
55 | ||
56 | /* Non-zero if we were stepping this LWP. */ | |
57 | int step; | |
58 | ||
a2f23071 DJ |
59 | /* If WAITSTATUS->KIND != TARGET_WAITKIND_SPURIOUS, the waitstatus |
60 | for this LWP's last event. This may correspond to STATUS above, | |
61 | or to a local variable in lin_lwp_wait. */ | |
62 | struct target_waitstatus waitstatus; | |
63 | ||
0274a8ce MS |
64 | /* Next LWP in list. */ |
65 | struct lwp_info *next; | |
66 | }; | |
67 | ||
0ec9a092 DJ |
68 | /* Attempt to initialize libthread_db. */ |
69 | void check_for_thread_db (void); | |
0274a8ce | 70 | |
83eba059 DJ |
71 | /* Tell the thread_db layer what native target operations to use. */ |
72 | void thread_db_init (struct target_ops *); | |
73 | ||
bfb39158 DJ |
74 | /* Find process PID's pending signal set from /proc/pid/status. */ |
75 | void linux_proc_pending_signals (int pid, sigset_t *pending, sigset_t *blocked, sigset_t *ignored); | |
76 | ||
4de4c07c | 77 | /* linux-nat functions for handling fork events. */ |
4de4c07c | 78 | extern void linux_enable_event_reporting (ptid_t ptid); |
0274a8ce | 79 | |
9ee57c33 DJ |
80 | extern int lin_lwp_attach_lwp (ptid_t ptid, int verbose); |
81 | ||
0274a8ce MS |
82 | /* Iterator function for lin-lwp's lwp list. */ |
83 | struct lwp_info *iterate_over_lwps (int (*callback) (struct lwp_info *, | |
84 | void *), | |
85 | void *data); | |
10d6c8cd | 86 | |
155bd5d1 AC |
87 | /* Create a prototype generic GNU/Linux target. The client can |
88 | override it with local methods. */ | |
10d6c8cd | 89 | struct target_ops * linux_target (void); |
f973ed9c | 90 | |
155bd5d1 | 91 | /* Register the customized GNU/Linux target. This should be used |
f973ed9c DJ |
92 | instead of calling add_target directly. */ |
93 | void linux_nat_add_target (struct target_ops *); | |
94 | ||
95 | /* Update linux-nat internal state when changing from one fork | |
96 | to another. */ | |
97 | void linux_nat_switch_fork (ptid_t new_ptid); |