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021e7609 AC |
1 | /* TUI Interpreter definitions for GDB, the GNU debugger. |
2 | ||
ecd75fc8 | 3 | Copyright (C) 2003-2014 Free Software Foundation, Inc. |
021e7609 AC |
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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
021e7609 AC |
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 | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
021e7609 AC |
19 | |
20 | #include "defs.h" | |
21 | #include "interps.h" | |
22 | #include "top.h" | |
23 | #include "event-top.h" | |
24 | #include "event-loop.h" | |
25 | #include "ui-out.h" | |
95cd630e | 26 | #include "cli-out.h" |
d7b2e967 | 27 | #include "tui/tui-data.h" |
021e7609 | 28 | #include "readline/readline.h" |
d7b2e967 | 29 | #include "tui/tui-win.h" |
021e7609 | 30 | #include "tui/tui.h" |
d7b2e967 | 31 | #include "tui/tui-io.h" |
60250e8b | 32 | #include "exceptions.h" |
fd664c91 PA |
33 | #include "infrun.h" |
34 | #include "observer.h" | |
35 | ||
36 | static struct ui_out *tui_ui_out (struct interp *self); | |
021e7609 | 37 | |
1cc6d956 MS |
38 | /* Set to 1 when the TUI mode must be activated when we first start |
39 | gdb. */ | |
63858210 SC |
40 | static int tui_start_enabled = 0; |
41 | ||
fd664c91 PA |
42 | /* The TUI interpreter. */ |
43 | static struct interp *tui_interp; | |
44 | ||
021e7609 AC |
45 | /* Cleanup the tui before exiting. */ |
46 | ||
47 | static void | |
48 | tui_exit (void) | |
49 | { | |
1cc6d956 MS |
50 | /* Disable the tui. Curses mode is left leaving the screen in a |
51 | clean state (see endwin()). */ | |
021e7609 AC |
52 | tui_disable (); |
53 | } | |
54 | ||
956c2c8b PA |
55 | /* True if TUI is the top-level interpreter. */ |
56 | static int tui_is_toplevel = 0; | |
57 | ||
fd664c91 PA |
58 | /* Observers for several run control events. If the interpreter is |
59 | quiet (i.e., another interpreter is being run with | |
60 | interpreter-exec), print nothing. */ | |
61 | ||
62 | /* Observer for the signal_received notification. */ | |
63 | ||
64 | static void | |
65 | tui_on_signal_received (enum gdb_signal siggnal) | |
66 | { | |
67 | if (!interp_quiet_p (tui_interp)) | |
68 | print_signal_received_reason (tui_ui_out (tui_interp), siggnal); | |
69 | } | |
70 | ||
71 | /* Observer for the end_stepping_range notification. */ | |
72 | ||
73 | static void | |
74 | tui_on_end_stepping_range (void) | |
75 | { | |
76 | if (!interp_quiet_p (tui_interp)) | |
77 | print_end_stepping_range_reason (tui_ui_out (tui_interp)); | |
78 | } | |
79 | ||
80 | /* Observer for the signal_exited notification. */ | |
81 | ||
82 | static void | |
83 | tui_on_signal_exited (enum gdb_signal siggnal) | |
84 | { | |
85 | if (!interp_quiet_p (tui_interp)) | |
86 | print_signal_exited_reason (tui_ui_out (tui_interp), siggnal); | |
87 | } | |
88 | ||
89 | /* Observer for the exited notification. */ | |
90 | ||
91 | static void | |
92 | tui_on_exited (int exitstatus) | |
93 | { | |
94 | if (!interp_quiet_p (tui_interp)) | |
95 | print_exited_reason (tui_ui_out (tui_interp), exitstatus); | |
96 | } | |
97 | ||
98 | /* Observer for the no_history notification. */ | |
99 | ||
100 | static void | |
101 | tui_on_no_history (void) | |
102 | { | |
103 | if (!interp_quiet_p (tui_interp)) | |
104 | print_no_history_reason (tui_ui_out (tui_interp)); | |
105 | } | |
106 | ||
92bcb5f9 PA |
107 | /* Observer for the sync_execution_done notification. */ |
108 | ||
109 | static void | |
110 | tui_on_sync_execution_done (void) | |
111 | { | |
112 | if (!interp_quiet_p (tui_interp)) | |
113 | display_gdb_prompt (NULL); | |
114 | } | |
115 | ||
116 | /* Observer for the command_error notification. */ | |
117 | ||
118 | static void | |
119 | tui_on_command_error (void) | |
120 | { | |
121 | if (!interp_quiet_p (tui_interp)) | |
122 | display_gdb_prompt (NULL); | |
123 | } | |
124 | ||
021e7609 AC |
125 | /* These implement the TUI interpreter. */ |
126 | ||
127 | static void * | |
4801a9a3 | 128 | tui_init (struct interp *self, int top_level) |
021e7609 | 129 | { |
956c2c8b PA |
130 | tui_is_toplevel = top_level; |
131 | ||
021e7609 AC |
132 | /* Install exit handler to leave the screen in a good shape. */ |
133 | atexit (tui_exit); | |
134 | ||
dd1abb8c | 135 | tui_initialize_static_data (); |
021e7609 AC |
136 | |
137 | tui_initialize_io (); | |
9612b5ec | 138 | tui_initialize_win (); |
1180b2c8 L |
139 | if (ui_file_isatty (gdb_stdout)) |
140 | tui_initialize_readline (); | |
021e7609 | 141 | |
fd664c91 PA |
142 | /* If changing this, remember to update cli-interp.c as well. */ |
143 | observer_attach_signal_received (tui_on_signal_received); | |
144 | observer_attach_end_stepping_range (tui_on_end_stepping_range); | |
145 | observer_attach_signal_exited (tui_on_signal_exited); | |
146 | observer_attach_exited (tui_on_exited); | |
147 | observer_attach_no_history (tui_on_no_history); | |
92bcb5f9 PA |
148 | observer_attach_sync_execution_done (tui_on_sync_execution_done); |
149 | observer_attach_command_error (tui_on_command_error); | |
fd664c91 | 150 | |
021e7609 AC |
151 | return NULL; |
152 | } | |
153 | ||
956c2c8b PA |
154 | /* True if enabling the TUI is allowed. Example, if the top level |
155 | interpreter is MI, enabling curses will certainly lose. */ | |
156 | ||
157 | int | |
158 | tui_allowed_p (void) | |
159 | { | |
160 | /* Only if TUI is the top level interpreter. Also don't try to | |
161 | setup curses (and print funny control characters) if we're not | |
162 | outputting to a terminal. */ | |
163 | return tui_is_toplevel && ui_file_isatty (gdb_stdout); | |
164 | } | |
165 | ||
021e7609 AC |
166 | static int |
167 | tui_resume (void *data) | |
168 | { | |
95cd630e DJ |
169 | struct ui_file *stream; |
170 | ||
1cc6d956 MS |
171 | /* gdb_setup_readline will change gdb_stdout. If the TUI was |
172 | previously writing to gdb_stdout, then set it to the new | |
173 | gdb_stdout afterwards. */ | |
95cd630e DJ |
174 | |
175 | stream = cli_out_set_stream (tui_old_uiout, gdb_stdout); | |
176 | if (stream != gdb_stdout) | |
177 | { | |
178 | cli_out_set_stream (tui_old_uiout, stream); | |
179 | stream = NULL; | |
180 | } | |
181 | ||
021e7609 | 182 | gdb_setup_readline (); |
95cd630e DJ |
183 | |
184 | if (stream != NULL) | |
185 | cli_out_set_stream (tui_old_uiout, gdb_stdout); | |
186 | ||
63858210 SC |
187 | if (tui_start_enabled) |
188 | tui_enable (); | |
021e7609 AC |
189 | return 1; |
190 | } | |
191 | ||
192 | static int | |
193 | tui_suspend (void *data) | |
194 | { | |
63858210 | 195 | tui_start_enabled = tui_active; |
021e7609 AC |
196 | tui_disable (); |
197 | return 1; | |
198 | } | |
199 | ||
4801a9a3 PA |
200 | static struct ui_out * |
201 | tui_ui_out (struct interp *self) | |
202 | { | |
203 | if (tui_active) | |
204 | return tui_out; | |
205 | else | |
206 | return tui_old_uiout; | |
207 | } | |
208 | ||
71fff37b | 209 | static struct gdb_exception |
021e7609 AC |
210 | tui_exec (void *data, const char *command_str) |
211 | { | |
e2e0b3e5 | 212 | internal_error (__FILE__, __LINE__, _("tui_exec called")); |
021e7609 AC |
213 | } |
214 | ||
2c0b251b PA |
215 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
216 | extern initialize_file_ftype _initialize_tui_interp; | |
217 | ||
021e7609 AC |
218 | void |
219 | _initialize_tui_interp (void) | |
220 | { | |
221 | static const struct interp_procs procs = { | |
222 | tui_init, | |
223 | tui_resume, | |
224 | tui_suspend, | |
225 | tui_exec, | |
4801a9a3 | 226 | tui_ui_out, |
4d09c5b4 AB |
227 | NULL, |
228 | cli_command_loop | |
021e7609 | 229 | }; |
021e7609 | 230 | |
1cc6d956 | 231 | /* Create a default uiout builder for the TUI. */ |
4801a9a3 PA |
232 | tui_interp = interp_new (INTERP_TUI, &procs); |
233 | interp_add (tui_interp); | |
cc4349ed | 234 | if (interpreter_p && strcmp (interpreter_p, INTERP_TUI) == 0) |
63858210 SC |
235 | tui_start_enabled = 1; |
236 | ||
237 | if (interpreter_p && strcmp (interpreter_p, INTERP_CONSOLE) == 0) | |
238 | { | |
239 | xfree (interpreter_p); | |
cc4349ed | 240 | interpreter_p = xstrdup (INTERP_TUI); |
63858210 | 241 | } |
021e7609 | 242 | } |