Commit | Line | Data |
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162078c8 NB |
1 | /* Python interface to inferior function events. |
2 | ||
61baf725 | 3 | Copyright (C) 2013-2017 Free Software Foundation, Inc. |
162078c8 NB |
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 | #include "defs.h" | |
21 | #include "py-event.h" | |
abf5651e | 22 | #include "py-ref.h" |
162078c8 | 23 | |
e36122e9 | 24 | extern PyTypeObject inferior_call_pre_event_object_type |
162078c8 | 25 | CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("event_object"); |
e36122e9 | 26 | extern PyTypeObject inferior_call_post_event_object_type |
162078c8 | 27 | CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("event_object"); |
e36122e9 | 28 | extern PyTypeObject register_changed_event_object_type |
162078c8 | 29 | CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("event_object"); |
e36122e9 | 30 | extern PyTypeObject memory_changed_event_object_type |
162078c8 NB |
31 | CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("event_object"); |
32 | ||
33 | /* Construct either a gdb.InferiorCallPreEvent or a | |
34 | gdb.InferiorCallPostEvent. */ | |
35 | ||
36 | static PyObject * | |
37 | create_inferior_call_event_object (inferior_call_kind flag, ptid_t ptid, | |
38 | CORE_ADDR addr) | |
39 | { | |
7780f186 | 40 | gdbpy_ref<> event; |
162078c8 | 41 | int failed; |
162078c8 NB |
42 | |
43 | switch (flag) | |
44 | { | |
45 | case INFERIOR_CALL_PRE: | |
abf5651e | 46 | event.reset (create_event_object (&inferior_call_pre_event_object_type)); |
162078c8 NB |
47 | break; |
48 | case INFERIOR_CALL_POST: | |
abf5651e | 49 | event.reset (create_event_object (&inferior_call_post_event_object_type)); |
162078c8 NB |
50 | break; |
51 | default: | |
abf5651e | 52 | gdb_assert_not_reached ("invalid inferior_call_kind"); |
162078c8 NB |
53 | } |
54 | ||
7780f186 | 55 | gdbpy_ref<> ptid_obj (gdbpy_create_ptid_object (ptid)); |
162078c8 | 56 | if (ptid_obj == NULL) |
abf5651e | 57 | return NULL; |
162078c8 | 58 | |
abf5651e TT |
59 | if (evpy_add_attribute (event.get (), "ptid", ptid_obj.get ()) < 0) |
60 | return NULL; | |
162078c8 | 61 | |
7780f186 | 62 | gdbpy_ref<> addr_obj (PyLong_FromLongLong (addr)); |
162078c8 | 63 | if (addr_obj == NULL) |
abf5651e | 64 | return NULL; |
162078c8 | 65 | |
abf5651e TT |
66 | if (evpy_add_attribute (event.get (), "address", addr_obj.get ()) < 0) |
67 | return NULL; | |
162078c8 | 68 | |
abf5651e | 69 | return event.release (); |
162078c8 NB |
70 | } |
71 | ||
72 | /* Construct a gdb.RegisterChangedEvent containing the affected | |
73 | register number. */ | |
74 | ||
75 | static PyObject * | |
76 | create_register_changed_event_object (struct frame_info *frame, | |
77 | int regnum) | |
78 | { | |
7780f186 | 79 | gdbpy_ref<> event (create_event_object (®ister_changed_event_object_type)); |
162078c8 NB |
80 | if (event == NULL) |
81 | return NULL; | |
82 | ||
7780f186 | 83 | gdbpy_ref<> frame_obj (frame_info_to_frame_object (frame)); |
162078c8 | 84 | if (frame_obj == NULL) |
abf5651e | 85 | return NULL; |
162078c8 | 86 | |
abf5651e TT |
87 | if (evpy_add_attribute (event.get (), "frame", frame_obj.get ()) < 0) |
88 | return NULL; | |
162078c8 | 89 | |
7780f186 | 90 | gdbpy_ref<> regnum_obj (PyLong_FromLongLong (regnum)); |
162078c8 | 91 | if (regnum_obj == NULL) |
abf5651e | 92 | return NULL; |
162078c8 | 93 | |
abf5651e TT |
94 | if (evpy_add_attribute (event.get (), "regnum", regnum_obj.get ()) < 0) |
95 | return NULL; | |
162078c8 | 96 | |
abf5651e | 97 | return event.release (); |
162078c8 NB |
98 | } |
99 | ||
100 | /* Construct a gdb.MemoryChangedEvent describing the extent of the | |
101 | affected memory. */ | |
102 | ||
103 | static PyObject * | |
104 | create_memory_changed_event_object (CORE_ADDR addr, ssize_t len) | |
105 | { | |
7780f186 | 106 | gdbpy_ref<> event (create_event_object (&memory_changed_event_object_type)); |
162078c8 NB |
107 | |
108 | if (event == NULL) | |
109 | return NULL; | |
162078c8 | 110 | |
7780f186 | 111 | gdbpy_ref<> addr_obj (PyLong_FromLongLong (addr)); |
162078c8 | 112 | if (addr_obj == NULL) |
abf5651e | 113 | return NULL; |
162078c8 | 114 | |
abf5651e TT |
115 | if (evpy_add_attribute (event.get (), "address", addr_obj.get ()) < 0) |
116 | return NULL; | |
162078c8 | 117 | |
7780f186 | 118 | gdbpy_ref<> len_obj (PyLong_FromLong (len)); |
162078c8 | 119 | if (len_obj == NULL) |
abf5651e | 120 | return NULL; |
162078c8 | 121 | |
abf5651e TT |
122 | if (evpy_add_attribute (event.get (), "length", len_obj.get ()) < 0) |
123 | return NULL; | |
162078c8 | 124 | |
abf5651e | 125 | return event.release (); |
162078c8 NB |
126 | } |
127 | ||
128 | /* Callback function which notifies observers when an event occurs which | |
129 | calls a function in the inferior. | |
130 | This function will create a new Python inferior-call event object. | |
131 | Return -1 if emit fails. */ | |
132 | ||
133 | int | |
134 | emit_inferior_call_event (inferior_call_kind flag, ptid_t thread, | |
135 | CORE_ADDR addr) | |
136 | { | |
162078c8 NB |
137 | if (evregpy_no_listeners_p (gdb_py_events.inferior_call)) |
138 | return 0; | |
139 | ||
7780f186 | 140 | gdbpy_ref<> event (create_inferior_call_event_object (flag, thread, addr)); |
162078c8 | 141 | if (event != NULL) |
abf5651e | 142 | return evpy_emit_event (event.get (), gdb_py_events.inferior_call); |
162078c8 NB |
143 | return -1; |
144 | } | |
145 | ||
146 | /* Callback when memory is modified by the user. This function will | |
147 | create a new Python memory changed event object. */ | |
148 | ||
149 | int | |
150 | emit_memory_changed_event (CORE_ADDR addr, ssize_t len) | |
151 | { | |
162078c8 NB |
152 | if (evregpy_no_listeners_p (gdb_py_events.memory_changed)) |
153 | return 0; | |
154 | ||
7780f186 | 155 | gdbpy_ref<> event (create_memory_changed_event_object (addr, len)); |
162078c8 | 156 | if (event != NULL) |
abf5651e | 157 | return evpy_emit_event (event.get (), gdb_py_events.memory_changed); |
162078c8 NB |
158 | return -1; |
159 | } | |
160 | ||
161 | /* Callback when a register is modified by the user. This function | |
162 | will create a new Python register changed event object. */ | |
163 | ||
164 | int | |
165 | emit_register_changed_event (struct frame_info* frame, int regnum) | |
166 | { | |
162078c8 NB |
167 | if (evregpy_no_listeners_p (gdb_py_events.register_changed)) |
168 | return 0; | |
169 | ||
7780f186 | 170 | gdbpy_ref<> event (create_register_changed_event_object (frame, regnum)); |
162078c8 | 171 | if (event != NULL) |
abf5651e | 172 | return evpy_emit_event (event.get (), gdb_py_events.register_changed); |
162078c8 NB |
173 | return -1; |
174 | } | |
175 | ||
176 | ||
177 | GDBPY_NEW_EVENT_TYPE (inferior_call_pre, | |
178 | "gdb.InferiorCallPreEvent", | |
179 | "InferiorCallPreEvent", | |
180 | "GDB inferior function pre-call event object", | |
e36122e9 | 181 | event_object_type); |
162078c8 NB |
182 | |
183 | GDBPY_NEW_EVENT_TYPE (inferior_call_post, | |
184 | "gdb.InferiorCallPostEvent", | |
185 | "InferiorCallPostEvent", | |
186 | "GDB inferior function post-call event object", | |
e36122e9 | 187 | event_object_type); |
162078c8 NB |
188 | |
189 | GDBPY_NEW_EVENT_TYPE (register_changed, | |
190 | "gdb.RegisterChangedEvent", | |
191 | "RegisterChangedEvent", | |
192 | "GDB register change event object", | |
e36122e9 | 193 | event_object_type); |
162078c8 NB |
194 | |
195 | GDBPY_NEW_EVENT_TYPE (memory_changed, | |
196 | "gdb.MemoryChangedEvent", | |
197 | "MemoryChangedEvent", | |
198 | "GDB memory change event object", | |
e36122e9 | 199 | event_object_type); |