1 /* Code for native debugging support for GNU/Linux (LWP layer).
3 Copyright (C) 2000-2015 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #include "target/waitstatus.h"
28 /* Unlike other extended result codes, WSTOPSIG (status) on
29 PTRACE_O_TRACESYSGOOD syscall events doesn't return SIGTRAP, but
30 instead SIGTRAP with bit 7 set. */
31 #define SYSCALL_SIGTRAP (SIGTRAP | 0x80)
33 /* Return the ptid of the current lightweight process. With NPTL
34 threads and LWPs map 1:1, so this is equivalent to returning the
35 ptid of the current thread. This function must be provided by
38 extern ptid_t
current_lwp_ptid (void);
40 /* Function type for the CALLBACK argument of iterate_over_lwps. */
41 typedef int (iterate_over_lwps_ftype
) (struct lwp_info
*lwp
, void *arg
);
43 /* Iterate over all LWPs. Calls CALLBACK with its second argument set
44 to DATA for every LWP in the list. If CALLBACK returns nonzero for
45 a particular LWP, return a pointer to the structure describing that
46 LWP immediately. Otherwise return NULL. This function must be
47 provided by the client. */
49 extern struct lwp_info
*iterate_over_lwps (ptid_t filter
,
50 iterate_over_lwps_ftype callback
,
53 /* Return the ptid of LWP. */
55 extern ptid_t
ptid_of_lwp (struct lwp_info
*lwp
);
57 /* Set the architecture-specific data of LWP. This function must be
58 provided by the client. */
60 extern void lwp_set_arch_private_info (struct lwp_info
*lwp
,
61 struct arch_lwp_info
*info
);
63 /* Return the architecture-specific data of LWP. This function must
64 be provided by the client. */
66 extern struct arch_lwp_info
*lwp_arch_private_info (struct lwp_info
*lwp
);
68 /* Return nonzero if LWP is stopped, zero otherwise. This function
69 must be provided by the client. */
71 extern int lwp_is_stopped (struct lwp_info
*lwp
);
73 /* Return the reason the LWP last stopped. This function must be
74 provided by the client. */
76 extern enum target_stop_reason
lwp_stop_reason (struct lwp_info
*lwp
);
78 /* Cause LWP to stop. This function must be provided by the
81 extern void linux_stop_lwp (struct lwp_info
*lwp
);
83 #endif /* LINUX_NAT_H */