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96d7229d LM |
1 | /* Code for native debugging support for GNU/Linux (LWP layer). |
2 | ||
b811d2c2 | 3 | Copyright (C) 2000-2020 Free Software Foundation, Inc. |
96d7229d LM |
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 | ||
1a5c2598 TT |
20 | #ifndef NAT_LINUX_NAT_H |
21 | #define NAT_LINUX_NAT_H | |
96d7229d | 22 | |
268a13a5 | 23 | #include "gdbsupport/function-view.h" |
2465e12e PA |
24 | #include "target/waitstatus.h" |
25 | ||
6d4ee8c6 | 26 | struct lwp_info; |
4b134ca1 | 27 | struct arch_lwp_info; |
6d4ee8c6 | 28 | |
682b2546 DE |
29 | /* This is the kernel's hard limit. Not to be confused with SIGRTMIN. */ |
30 | #ifndef __SIGRTMIN | |
31 | #define __SIGRTMIN 32 | |
32 | #endif | |
33 | ||
96d7229d LM |
34 | /* Unlike other extended result codes, WSTOPSIG (status) on |
35 | PTRACE_O_TRACESYSGOOD syscall events doesn't return SIGTRAP, but | |
36 | instead SIGTRAP with bit 7 set. */ | |
37 | #define SYSCALL_SIGTRAP (SIGTRAP | 0x80) | |
38 | ||
7b669087 GB |
39 | /* Return the ptid of the current lightweight process. With NPTL |
40 | threads and LWPs map 1:1, so this is equivalent to returning the | |
41 | ptid of the current thread. This function must be provided by | |
42 | the client. */ | |
43 | ||
44 | extern ptid_t current_lwp_ptid (void); | |
45 | ||
6d4ee8c6 | 46 | /* Function type for the CALLBACK argument of iterate_over_lwps. */ |
d3a70e03 | 47 | typedef int (iterate_over_lwps_ftype) (struct lwp_info *lwp); |
6d4ee8c6 GB |
48 | |
49 | /* Iterate over all LWPs. Calls CALLBACK with its second argument set | |
50 | to DATA for every LWP in the list. If CALLBACK returns nonzero for | |
51 | a particular LWP, return a pointer to the structure describing that | |
52 | LWP immediately. Otherwise return NULL. This function must be | |
53 | provided by the client. */ | |
54 | ||
d3a70e03 TT |
55 | extern struct lwp_info *iterate_over_lwps |
56 | (ptid_t filter, | |
57 | gdb::function_view<iterate_over_lwps_ftype> callback); | |
6d4ee8c6 | 58 | |
cff068da GB |
59 | /* Return the ptid of LWP. */ |
60 | ||
61 | extern ptid_t ptid_of_lwp (struct lwp_info *lwp); | |
62 | ||
4b134ca1 GB |
63 | /* Set the architecture-specific data of LWP. This function must be |
64 | provided by the client. */ | |
65 | ||
66 | extern void lwp_set_arch_private_info (struct lwp_info *lwp, | |
67 | struct arch_lwp_info *info); | |
68 | ||
69 | /* Return the architecture-specific data of LWP. This function must | |
70 | be provided by the client. */ | |
71 | ||
72 | extern struct arch_lwp_info *lwp_arch_private_info (struct lwp_info *lwp); | |
73 | ||
cff068da GB |
74 | /* Return nonzero if LWP is stopped, zero otherwise. This function |
75 | must be provided by the client. */ | |
76 | ||
77 | extern int lwp_is_stopped (struct lwp_info *lwp); | |
78 | ||
79 | /* Return the reason the LWP last stopped. This function must be | |
80 | provided by the client. */ | |
81 | ||
82 | extern enum target_stop_reason lwp_stop_reason (struct lwp_info *lwp); | |
83 | ||
b2f7c7e8 GB |
84 | /* Cause LWP to stop. This function must be provided by the |
85 | client. */ | |
86 | ||
87 | extern void linux_stop_lwp (struct lwp_info *lwp); | |
88 | ||
0e00e962 AA |
89 | /* Return nonzero if we are single-stepping this LWP at the ptrace |
90 | level. */ | |
91 | ||
92 | extern int lwp_is_stepping (struct lwp_info *lwp); | |
93 | ||
1a5c2598 | 94 | #endif /* NAT_LINUX_NAT_H */ |