Commit | Line | Data |
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162078c8 NB |
1 | /* Python interface to inferior function events. |
2 | ||
42a4f53d | 3 | Copyright (C) 2013-2019 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 | |
162078c8 NB |
24 | /* Construct either a gdb.InferiorCallPreEvent or a |
25 | gdb.InferiorCallPostEvent. */ | |
26 | ||
d98fc15b | 27 | static gdbpy_ref<> |
162078c8 NB |
28 | create_inferior_call_event_object (inferior_call_kind flag, ptid_t ptid, |
29 | CORE_ADDR addr) | |
30 | { | |
7780f186 | 31 | gdbpy_ref<> event; |
162078c8 NB |
32 | |
33 | switch (flag) | |
34 | { | |
35 | case INFERIOR_CALL_PRE: | |
35c61a1d | 36 | event = create_event_object (&inferior_call_pre_event_object_type); |
162078c8 NB |
37 | break; |
38 | case INFERIOR_CALL_POST: | |
35c61a1d | 39 | event = create_event_object (&inferior_call_post_event_object_type); |
162078c8 NB |
40 | break; |
41 | default: | |
abf5651e | 42 | gdb_assert_not_reached ("invalid inferior_call_kind"); |
162078c8 NB |
43 | } |
44 | ||
7780f186 | 45 | gdbpy_ref<> ptid_obj (gdbpy_create_ptid_object (ptid)); |
162078c8 | 46 | if (ptid_obj == NULL) |
abf5651e | 47 | return NULL; |
162078c8 | 48 | |
abf5651e TT |
49 | if (evpy_add_attribute (event.get (), "ptid", ptid_obj.get ()) < 0) |
50 | return NULL; | |
162078c8 | 51 | |
7780f186 | 52 | gdbpy_ref<> addr_obj (PyLong_FromLongLong (addr)); |
162078c8 | 53 | if (addr_obj == NULL) |
abf5651e | 54 | return NULL; |
162078c8 | 55 | |
abf5651e TT |
56 | if (evpy_add_attribute (event.get (), "address", addr_obj.get ()) < 0) |
57 | return NULL; | |
162078c8 | 58 | |
d98fc15b | 59 | return event; |
162078c8 NB |
60 | } |
61 | ||
62 | /* Construct a gdb.RegisterChangedEvent containing the affected | |
63 | register number. */ | |
64 | ||
d98fc15b | 65 | static gdbpy_ref<> |
162078c8 NB |
66 | create_register_changed_event_object (struct frame_info *frame, |
67 | int regnum) | |
68 | { | |
d98fc15b | 69 | gdbpy_ref<> event = create_event_object (®ister_changed_event_object_type); |
162078c8 NB |
70 | if (event == NULL) |
71 | return NULL; | |
72 | ||
7780f186 | 73 | gdbpy_ref<> frame_obj (frame_info_to_frame_object (frame)); |
162078c8 | 74 | if (frame_obj == NULL) |
abf5651e | 75 | return NULL; |
162078c8 | 76 | |
abf5651e TT |
77 | if (evpy_add_attribute (event.get (), "frame", frame_obj.get ()) < 0) |
78 | return NULL; | |
162078c8 | 79 | |
7780f186 | 80 | gdbpy_ref<> regnum_obj (PyLong_FromLongLong (regnum)); |
162078c8 | 81 | if (regnum_obj == NULL) |
abf5651e | 82 | return NULL; |
162078c8 | 83 | |
abf5651e TT |
84 | if (evpy_add_attribute (event.get (), "regnum", regnum_obj.get ()) < 0) |
85 | return NULL; | |
162078c8 | 86 | |
d98fc15b | 87 | return event; |
162078c8 NB |
88 | } |
89 | ||
90 | /* Construct a gdb.MemoryChangedEvent describing the extent of the | |
91 | affected memory. */ | |
92 | ||
d98fc15b | 93 | static gdbpy_ref<> |
162078c8 NB |
94 | create_memory_changed_event_object (CORE_ADDR addr, ssize_t len) |
95 | { | |
d98fc15b | 96 | gdbpy_ref<> event = create_event_object (&memory_changed_event_object_type); |
162078c8 NB |
97 | |
98 | if (event == NULL) | |
99 | return NULL; | |
162078c8 | 100 | |
7780f186 | 101 | gdbpy_ref<> addr_obj (PyLong_FromLongLong (addr)); |
162078c8 | 102 | if (addr_obj == NULL) |
abf5651e | 103 | return NULL; |
162078c8 | 104 | |
abf5651e TT |
105 | if (evpy_add_attribute (event.get (), "address", addr_obj.get ()) < 0) |
106 | return NULL; | |
162078c8 | 107 | |
7780f186 | 108 | gdbpy_ref<> len_obj (PyLong_FromLong (len)); |
162078c8 | 109 | if (len_obj == NULL) |
abf5651e | 110 | return NULL; |
162078c8 | 111 | |
abf5651e TT |
112 | if (evpy_add_attribute (event.get (), "length", len_obj.get ()) < 0) |
113 | return NULL; | |
162078c8 | 114 | |
d98fc15b | 115 | return event; |
162078c8 NB |
116 | } |
117 | ||
118 | /* Callback function which notifies observers when an event occurs which | |
119 | calls a function in the inferior. | |
120 | This function will create a new Python inferior-call event object. | |
121 | Return -1 if emit fails. */ | |
122 | ||
123 | int | |
124 | emit_inferior_call_event (inferior_call_kind flag, ptid_t thread, | |
125 | CORE_ADDR addr) | |
126 | { | |
162078c8 NB |
127 | if (evregpy_no_listeners_p (gdb_py_events.inferior_call)) |
128 | return 0; | |
129 | ||
d98fc15b | 130 | gdbpy_ref<> event = create_inferior_call_event_object (flag, thread, addr); |
162078c8 | 131 | if (event != NULL) |
abf5651e | 132 | return evpy_emit_event (event.get (), gdb_py_events.inferior_call); |
162078c8 NB |
133 | return -1; |
134 | } | |
135 | ||
136 | /* Callback when memory is modified by the user. This function will | |
137 | create a new Python memory changed event object. */ | |
138 | ||
139 | int | |
140 | emit_memory_changed_event (CORE_ADDR addr, ssize_t len) | |
141 | { | |
162078c8 NB |
142 | if (evregpy_no_listeners_p (gdb_py_events.memory_changed)) |
143 | return 0; | |
144 | ||
d98fc15b | 145 | gdbpy_ref<> event = create_memory_changed_event_object (addr, len); |
162078c8 | 146 | if (event != NULL) |
abf5651e | 147 | return evpy_emit_event (event.get (), gdb_py_events.memory_changed); |
162078c8 NB |
148 | return -1; |
149 | } | |
150 | ||
151 | /* Callback when a register is modified by the user. This function | |
152 | will create a new Python register changed event object. */ | |
153 | ||
154 | int | |
155 | emit_register_changed_event (struct frame_info* frame, int regnum) | |
156 | { | |
162078c8 NB |
157 | if (evregpy_no_listeners_p (gdb_py_events.register_changed)) |
158 | return 0; | |
159 | ||
d98fc15b | 160 | gdbpy_ref<> event = create_register_changed_event_object (frame, regnum); |
162078c8 | 161 | if (event != NULL) |
abf5651e | 162 | return evpy_emit_event (event.get (), gdb_py_events.register_changed); |
162078c8 NB |
163 | return -1; |
164 | } |