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linux-nat.h
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1 /* Code for native debugging support for GNU/Linux (LWP layer).
2
3 Copyright (C) 2000-2018 Free Software Foundation, Inc.
4
5 This file is part of GDB.
6
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.
11
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.
16
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/>. */
19
20 #ifndef LINUX_NAT_H
21 #define LINUX_NAT_H
22
23 #include "target/waitstatus.h"
24
25 struct lwp_info;
26 struct arch_lwp_info;
27
28 /* This is the kernel's hard limit. Not to be confused with SIGRTMIN. */
29 #ifndef __SIGRTMIN
30 #define __SIGRTMIN 32
31 #endif
32
33 /* Unlike other extended result codes, WSTOPSIG (status) on
34 PTRACE_O_TRACESYSGOOD syscall events doesn't return SIGTRAP, but
35 instead SIGTRAP with bit 7 set. */
36 #define SYSCALL_SIGTRAP (SIGTRAP | 0x80)
37
38 /* Return the ptid of the current lightweight process. With NPTL
39 threads and LWPs map 1:1, so this is equivalent to returning the
40 ptid of the current thread. This function must be provided by
41 the client. */
42
43 extern ptid_t current_lwp_ptid (void);
44
45 /* Function type for the CALLBACK argument of iterate_over_lwps. */
46 typedef int (iterate_over_lwps_ftype) (struct lwp_info *lwp, void *arg);
47
48 /* Iterate over all LWPs. Calls CALLBACK with its second argument set
49 to DATA for every LWP in the list. If CALLBACK returns nonzero for
50 a particular LWP, return a pointer to the structure describing that
51 LWP immediately. Otherwise return NULL. This function must be
52 provided by the client. */
53
54 extern struct lwp_info *iterate_over_lwps (ptid_t filter,
55 iterate_over_lwps_ftype callback,
56 void *data);
57
58 /* Return the ptid of LWP. */
59
60 extern ptid_t ptid_of_lwp (struct lwp_info *lwp);
61
62 /* Set the architecture-specific data of LWP. This function must be
63 provided by the client. */
64
65 extern void lwp_set_arch_private_info (struct lwp_info *lwp,
66 struct arch_lwp_info *info);
67
68 /* Return the architecture-specific data of LWP. This function must
69 be provided by the client. */
70
71 extern struct arch_lwp_info *lwp_arch_private_info (struct lwp_info *lwp);
72
73 /* Return nonzero if LWP is stopped, zero otherwise. This function
74 must be provided by the client. */
75
76 extern int lwp_is_stopped (struct lwp_info *lwp);
77
78 /* Return the reason the LWP last stopped. This function must be
79 provided by the client. */
80
81 extern enum target_stop_reason lwp_stop_reason (struct lwp_info *lwp);
82
83 /* Cause LWP to stop. This function must be provided by the
84 client. */
85
86 extern void linux_stop_lwp (struct lwp_info *lwp);
87
88 /* Return nonzero if we are single-stepping this LWP at the ptrace
89 level. */
90
91 extern int lwp_is_stepping (struct lwp_info *lwp);
92
93 #endif /* LINUX_NAT_H */
lwp_info
Definition: linux-nat.h:30
lwp_is_stepping
int lwp_is_stepping(struct lwp_info *lwp)
Definition: linux-nat.c:364
ptid_of_lwp
ptid_t ptid_of_lwp(struct lwp_info *lwp)
Definition: linux-nat.c:323
iterate_over_lwps
struct lwp_info * iterate_over_lwps(ptid_t filter, iterate_over_lwps_ftype callback, void *data)
Definition: linux-nat.c:990
lwp_is_stopped
int lwp_is_stopped(struct lwp_info *lwp)
Definition: linux-nat.c:348
arch_lwp_info
Definition: arm-linux-nat.c:731
ptid_t
Definition: ptid.h:35
linux_stop_lwp
void linux_stop_lwp(struct lwp_info *lwp)
Definition: linux-nat.c:2370
current_lwp_ptid
ptid_t current_lwp_ptid(void)
Definition: linux-nat.c:4969
waitstatus.h
lwp_stop_reason
enum target_stop_reason lwp_stop_reason(struct lwp_info *lwp)
Definition: linux-nat.c:356
lwp_set_arch_private_info
void lwp_set_arch_private_info(struct lwp_info *lwp, struct arch_lwp_info *info)
Definition: linux-nat.c:331
selftests::ptid::lwp
static constexpr ptid_t lwp
Definition: ptid-selftests.c:42
lwp_arch_private_info
struct arch_lwp_info * lwp_arch_private_info(struct lwp_info *lwp)
Definition: linux-nat.c:340
iterate_over_lwps_ftype
int() iterate_over_lwps_ftype(struct lwp_info *lwp, void *arg)
Definition: linux-nat.h:46
target_stop_reason
target_stop_reason
Definition: waitstatus.h:127