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waitstatus.h
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1 /* Target waitstatus definitions and prototypes.
2
3 Copyright (C) 1990-2018 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 WAITSTATUS_H
21 #define WAITSTATUS_H
22
23 #include "gdb_signals.h"
24
25 /* Stuff for target_wait. */
26
27 /* Generally, what has the program done? */
28 enum target_waitkind
29 {
30 /* The program has exited. The exit status is in value.integer. */
31 TARGET_WAITKIND_EXITED,
32
33 /* The program has stopped with a signal. Which signal is in
34 value.sig. */
35 TARGET_WAITKIND_STOPPED,
36
37 /* The program has terminated with a signal. Which signal is in
38 value.sig. */
39 TARGET_WAITKIND_SIGNALLED,
40
41 /* The program is letting us know that it dynamically loaded
42 something (e.g. it called load(2) on AIX). */
43 TARGET_WAITKIND_LOADED,
44
45 /* The program has forked. A "related" process' PTID is in
46 value.related_pid. I.e., if the child forks, value.related_pid
47 is the parent's ID. */
48 TARGET_WAITKIND_FORKED,
49
50 /* The program has vforked. A "related" process's PTID is in
51 value.related_pid. */
52 TARGET_WAITKIND_VFORKED,
53
54 /* The program has exec'ed a new executable file. The new file's
55 pathname is pointed to by value.execd_pathname. */
56 TARGET_WAITKIND_EXECD,
57
58 /* The program had previously vforked, and now the child is done
59 with the shared memory region, because it exec'ed or exited.
60 Note that the event is reported to the vfork parent. This is
61 only used if GDB did not stay attached to the vfork child,
62 otherwise, a TARGET_WAITKIND_EXECD or
63 TARGET_WAITKIND_EXIT|SIGNALLED event associated with the child
64 has the same effect. */
65 TARGET_WAITKIND_VFORK_DONE,
66
67 /* The program has entered or returned from a system call. On
68 HP-UX, this is used in the hardware watchpoint implementation.
69 The syscall's unique integer ID number is in
70 value.syscall_id. */
71 TARGET_WAITKIND_SYSCALL_ENTRY,
72 TARGET_WAITKIND_SYSCALL_RETURN,
73
74 /* Nothing happened, but we stopped anyway. This perhaps should
75 be handled within target_wait, but I'm not sure target_wait
76 should be resuming the inferior. */
77 TARGET_WAITKIND_SPURIOUS,
78
79 /* An event has occured, but we should wait again.
80 Remote_async_wait() returns this when there is an event
81 on the inferior, but the rest of the world is not interested in
82 it. The inferior has not stopped, but has just sent some output
83 to the console, for instance. In this case, we want to go back
84 to the event loop and wait there for another event from the
85 inferior, rather than being stuck in the remote_async_wait()
86 function. This way the event loop is responsive to other events,
87 like for instance the user typing. */
88 TARGET_WAITKIND_IGNORE,
89
90 /* The target has run out of history information,
91 and cannot run backward any further. */
92 TARGET_WAITKIND_NO_HISTORY,
93
94 /* There are no resumed children left in the program. */
95 TARGET_WAITKIND_NO_RESUMED,
96
97 /* The thread was created. */
98 TARGET_WAITKIND_THREAD_CREATED,
99
100 /* The thread has exited. The exit status is in value.integer. */
101 TARGET_WAITKIND_THREAD_EXITED,
102 };
103
104 struct target_waitstatus
105 {
106 enum target_waitkind kind;
107
108 /* Additional information about the event. */
109 union
110 {
111 /* Exit status */
112 int integer;
113 /* Signal number */
114 enum gdb_signal sig;
115 /* Forked child pid */
116 ptid_t related_pid;
117 /* execd pathname */
118 char *execd_pathname;
119 /* Syscall number */
120 int syscall_number;
121 } value;
122 };
123
124 /* Extended reasons that can explain why a target/thread stopped for a
125 trap signal. */
126
127 enum target_stop_reason
128 {
129 /* Either not stopped, or stopped for a reason that doesn't require
130 special tracking. */
131 TARGET_STOPPED_BY_NO_REASON,
132
133 /* Stopped by a software breakpoint. */
134 TARGET_STOPPED_BY_SW_BREAKPOINT,
135
136 /* Stopped by a hardware breakpoint. */
137 TARGET_STOPPED_BY_HW_BREAKPOINT,
138
139 /* Stopped by a watchpoint. */
140 TARGET_STOPPED_BY_WATCHPOINT,
141
142 /* Stopped by a single step finishing. */
143 TARGET_STOPPED_BY_SINGLE_STEP
144 };
145
146 /* Prototypes */
147
148 /* Return a pretty printed form of target_waitstatus. */
149 std::string target_waitstatus_to_string (const struct target_waitstatus *);
150
151 #endif /* WAITSTATUS_H */
string
const char * string
Definition: signals.c:50
TARGET_WAITKIND_SYSCALL_RETURN
Definition: waitstatus.h:72
TARGET_STOPPED_BY_WATCHPOINT
Definition: waitstatus.h:140
target_waitstatus::related_pid
ptid_t related_pid
Definition: waitstatus.h:116
target_waitstatus
Definition: waitstatus.h:104
TARGET_WAITKIND_SYSCALL_ENTRY
Definition: waitstatus.h:71
TARGET_STOPPED_BY_NO_REASON
Definition: waitstatus.h:131
target_waitstatus_to_string
std::string target_waitstatus_to_string(const struct target_waitstatus *)
Definition: waitstatus.c:27
target_waitstatus::value
union target_waitstatus::@174 value
TARGET_WAITKIND_THREAD_CREATED
Definition: waitstatus.h:98
TARGET_WAITKIND_EXECD
Definition: waitstatus.h:56
TARGET_WAITKIND_FORKED
Definition: waitstatus.h:48
TARGET_WAITKIND_VFORK_DONE
Definition: waitstatus.h:65
gdb_signals.h
TARGET_WAITKIND_SIGNALLED
Definition: waitstatus.h:39
TARGET_STOPPED_BY_SINGLE_STEP
Definition: waitstatus.h:143
target_waitstatus::sig
enum gdb_signal sig
Definition: waitstatus.h:114
ptid_t
Definition: ptid.h:35
TARGET_WAITKIND_NO_HISTORY
Definition: waitstatus.h:92
TARGET_STOPPED_BY_HW_BREAKPOINT
Definition: waitstatus.h:137
target_waitstatus::execd_pathname
char * execd_pathname
Definition: waitstatus.h:118
target_waitstatus::integer
int integer
Definition: waitstatus.h:112
TARGET_STOPPED_BY_SW_BREAKPOINT
Definition: waitstatus.h:134
target_waitkind
target_waitkind
Definition: waitstatus.h:28
target_waitstatus::kind
enum target_waitkind kind
Definition: waitstatus.h:106
TARGET_WAITKIND_SPURIOUS
Definition: waitstatus.h:77
TARGET_WAITKIND_EXITED
Definition: waitstatus.h:31
TARGET_WAITKIND_VFORKED
Definition: waitstatus.h:52
TARGET_WAITKIND_LOADED
Definition: waitstatus.h:43
TARGET_WAITKIND_NO_RESUMED
Definition: waitstatus.h:95
TARGET_WAITKIND_THREAD_EXITED
Definition: waitstatus.h:101
TARGET_WAITKIND_IGNORE
Definition: waitstatus.h:88
TARGET_WAITKIND_STOPPED
Definition: waitstatus.h:35
target_waitstatus::syscall_number
int syscall_number
Definition: waitstatus.h:120
target_stop_reason
target_stop_reason
Definition: waitstatus.h:127