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4a8f6654 AC |
1 | /* CLI Definitions for GDB, the GNU debugger. |
2 | ||
618f726f | 3 | Copyright (C) 2002-2016 Free Software Foundation, Inc. |
4a8f6654 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 |
4a8f6654 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/>. */ |
4a8f6654 AC |
19 | |
20 | #include "defs.h" | |
3c216924 | 21 | #include "cli-interp.h" |
4a8f6654 | 22 | #include "interps.h" |
4a8f6654 AC |
23 | #include "event-top.h" |
24 | #include "ui-out.h" | |
25 | #include "cli-out.h" | |
26 | #include "top.h" /* for "execute_command" */ | |
3c216924 | 27 | #include "event-top.h" |
fd664c91 PA |
28 | #include "infrun.h" |
29 | #include "observer.h" | |
4a8f6654 | 30 | |
8322445e PA |
31 | /* The console interpreter. */ |
32 | struct cli_interp | |
33 | { | |
34 | /* The ui_out for the console interpreter. */ | |
35 | struct ui_out *cli_uiout; | |
36 | }; | |
37 | ||
73ab01a0 PA |
38 | /* Returns the INTERP's data cast as cli_interp if INTERP is a CLI, |
39 | and returns NULL otherwise. */ | |
40 | ||
41 | static struct cli_interp * | |
42 | as_cli_interp (struct interp *interp) | |
43 | { | |
44 | if (strcmp (interp_name (interp), INTERP_CONSOLE) == 0) | |
45 | return (struct cli_interp *) interp_data (interp); | |
46 | return NULL; | |
47 | } | |
4a8f6654 | 48 | |
4791eb66 | 49 | /* Longjmp-safe wrapper for "execute_command". */ |
71fff37b | 50 | static struct gdb_exception safe_execute_command (struct ui_out *uiout, |
ebcd3b23 MS |
51 | char *command, |
52 | int from_tty); | |
fd664c91 PA |
53 | |
54 | /* Observers for several run control events. If the interpreter is | |
55 | quiet (i.e., another interpreter is being run with | |
56 | interpreter-exec), print nothing. */ | |
57 | ||
243a9253 PA |
58 | /* Observer for the normal_stop notification. */ |
59 | ||
60 | static void | |
61 | cli_on_normal_stop (struct bpstats *bs, int print_frame) | |
62 | { | |
73ab01a0 PA |
63 | struct switch_thru_all_uis state; |
64 | ||
65 | SWITCH_THRU_ALL_UIS (state) | |
243a9253 | 66 | { |
73ab01a0 PA |
67 | struct cli_interp *cli = as_cli_interp (top_level_interpreter ()); |
68 | ||
69 | if (cli == NULL) | |
70 | continue; | |
71 | ||
243a9253 | 72 | if (print_frame) |
73ab01a0 | 73 | print_stop_event (cli->cli_uiout); |
243a9253 PA |
74 | } |
75 | } | |
76 | ||
fd664c91 PA |
77 | /* Observer for the signal_received notification. */ |
78 | ||
79 | static void | |
80 | cli_on_signal_received (enum gdb_signal siggnal) | |
81 | { | |
73ab01a0 PA |
82 | struct switch_thru_all_uis state; |
83 | ||
84 | SWITCH_THRU_ALL_UIS (state) | |
85 | { | |
86 | struct cli_interp *cli = as_cli_interp (top_level_interpreter ()); | |
87 | ||
88 | if (cli == NULL) | |
89 | continue; | |
90 | ||
91 | print_signal_received_reason (cli->cli_uiout, siggnal); | |
92 | } | |
fd664c91 PA |
93 | } |
94 | ||
95 | /* Observer for the end_stepping_range notification. */ | |
96 | ||
97 | static void | |
98 | cli_on_end_stepping_range (void) | |
99 | { | |
73ab01a0 PA |
100 | struct switch_thru_all_uis state; |
101 | ||
102 | SWITCH_THRU_ALL_UIS (state) | |
103 | { | |
104 | struct cli_interp *cli = as_cli_interp (top_level_interpreter ()); | |
105 | ||
106 | if (cli == NULL) | |
107 | continue; | |
108 | ||
109 | print_end_stepping_range_reason (cli->cli_uiout); | |
110 | } | |
fd664c91 PA |
111 | } |
112 | ||
113 | /* Observer for the signalled notification. */ | |
114 | ||
115 | static void | |
116 | cli_on_signal_exited (enum gdb_signal siggnal) | |
117 | { | |
73ab01a0 PA |
118 | struct switch_thru_all_uis state; |
119 | ||
120 | SWITCH_THRU_ALL_UIS (state) | |
121 | { | |
122 | struct cli_interp *cli = as_cli_interp (top_level_interpreter ()); | |
123 | ||
124 | if (cli == NULL) | |
125 | continue; | |
126 | ||
127 | print_signal_exited_reason (cli->cli_uiout, siggnal); | |
128 | } | |
fd664c91 PA |
129 | } |
130 | ||
131 | /* Observer for the exited notification. */ | |
132 | ||
133 | static void | |
134 | cli_on_exited (int exitstatus) | |
135 | { | |
73ab01a0 PA |
136 | struct switch_thru_all_uis state; |
137 | ||
138 | SWITCH_THRU_ALL_UIS (state) | |
139 | { | |
140 | struct cli_interp *cli = as_cli_interp (top_level_interpreter ()); | |
141 | ||
142 | if (cli == NULL) | |
143 | continue; | |
144 | ||
145 | print_exited_reason (cli->cli_uiout, exitstatus); | |
146 | } | |
fd664c91 PA |
147 | } |
148 | ||
149 | /* Observer for the no_history notification. */ | |
150 | ||
151 | static void | |
152 | cli_on_no_history (void) | |
153 | { | |
73ab01a0 PA |
154 | struct switch_thru_all_uis state; |
155 | ||
156 | SWITCH_THRU_ALL_UIS (state) | |
157 | { | |
158 | struct cli_interp *cli = as_cli_interp (top_level_interpreter ()); | |
159 | ||
160 | if (cli == NULL) | |
161 | continue; | |
162 | ||
163 | print_no_history_reason (cli->cli_uiout); | |
164 | } | |
fd664c91 PA |
165 | } |
166 | ||
92bcb5f9 PA |
167 | /* Observer for the sync_execution_done notification. */ |
168 | ||
169 | static void | |
170 | cli_on_sync_execution_done (void) | |
171 | { | |
73ab01a0 PA |
172 | struct cli_interp *cli = as_cli_interp (top_level_interpreter ()); |
173 | ||
174 | if (cli == NULL) | |
175 | return; | |
176 | ||
177 | display_gdb_prompt (NULL); | |
92bcb5f9 PA |
178 | } |
179 | ||
180 | /* Observer for the command_error notification. */ | |
181 | ||
182 | static void | |
183 | cli_on_command_error (void) | |
184 | { | |
73ab01a0 PA |
185 | struct cli_interp *cli = as_cli_interp (top_level_interpreter ()); |
186 | ||
187 | if (cli == NULL) | |
188 | return; | |
189 | ||
190 | display_gdb_prompt (NULL); | |
92bcb5f9 PA |
191 | } |
192 | ||
4a8f6654 AC |
193 | /* These implement the cli out interpreter: */ |
194 | ||
195 | static void * | |
4801a9a3 | 196 | cli_interpreter_init (struct interp *self, int top_level) |
4a8f6654 | 197 | { |
8322445e | 198 | return interp_data (self); |
4a8f6654 AC |
199 | } |
200 | ||
201 | static int | |
202 | cli_interpreter_resume (void *data) | |
203 | { | |
3c216924 | 204 | struct ui *ui = current_ui; |
8322445e | 205 | struct cli_interp *cli = (struct cli_interp *) data; |
38caaeec DJ |
206 | struct ui_file *stream; |
207 | ||
4a8f6654 | 208 | /*sync_execution = 1; */ |
38caaeec | 209 | |
ebcd3b23 MS |
210 | /* gdb_setup_readline will change gdb_stdout. If the CLI was |
211 | previously writing to gdb_stdout, then set it to the new | |
212 | gdb_stdout afterwards. */ | |
38caaeec | 213 | |
8322445e | 214 | stream = cli_out_set_stream (cli->cli_uiout, gdb_stdout); |
38caaeec DJ |
215 | if (stream != gdb_stdout) |
216 | { | |
8322445e | 217 | cli_out_set_stream (cli->cli_uiout, stream); |
38caaeec DJ |
218 | stream = NULL; |
219 | } | |
220 | ||
3c216924 PA |
221 | gdb_setup_readline (1); |
222 | ||
223 | ui->input_handler = command_line_handler; | |
38caaeec DJ |
224 | |
225 | if (stream != NULL) | |
8322445e | 226 | cli_out_set_stream (cli->cli_uiout, gdb_stdout); |
38caaeec | 227 | |
4a8f6654 AC |
228 | return 1; |
229 | } | |
230 | ||
231 | static int | |
232 | cli_interpreter_suspend (void *data) | |
233 | { | |
234 | gdb_disable_readline (); | |
235 | return 1; | |
236 | } | |
237 | ||
71fff37b | 238 | static struct gdb_exception |
4a8f6654 AC |
239 | cli_interpreter_exec (void *data, const char *command_str) |
240 | { | |
8322445e | 241 | struct cli_interp *cli = (struct cli_interp *) data; |
4a8f6654 | 242 | struct ui_file *old_stream; |
71fff37b | 243 | struct gdb_exception result; |
4a8f6654 AC |
244 | |
245 | /* FIXME: cagney/2003-02-01: Need to const char *propogate | |
246 | safe_execute_command. */ | |
224c3ddb SM |
247 | char *str = (char *) alloca (strlen (command_str) + 1); |
248 | strcpy (str, command_str); | |
4a8f6654 | 249 | |
ebcd3b23 MS |
250 | /* gdb_stdout could change between the time cli_uiout was |
251 | initialized and now. Since we're probably using a different | |
252 | interpreter which has a new ui_file for gdb_stdout, use that one | |
253 | instead of the default. | |
4a8f6654 | 254 | |
ebcd3b23 MS |
255 | It is important that it gets reset everytime, since the user |
256 | could set gdb to use a different interpreter. */ | |
8322445e PA |
257 | old_stream = cli_out_set_stream (cli->cli_uiout, gdb_stdout); |
258 | result = safe_execute_command (cli->cli_uiout, str, 1); | |
259 | cli_out_set_stream (cli->cli_uiout, old_stream); | |
4a8f6654 AC |
260 | return result; |
261 | } | |
262 | ||
3c216924 PA |
263 | int |
264 | cli_interpreter_supports_command_editing (struct interp *interp) | |
265 | { | |
266 | return 1; | |
267 | } | |
268 | ||
71fff37b | 269 | static struct gdb_exception |
f9679975 | 270 | safe_execute_command (struct ui_out *command_uiout, char *command, int from_tty) |
4a8f6654 | 271 | { |
7556d4a4 | 272 | struct gdb_exception e = exception_none; |
f9679975 PA |
273 | struct ui_out *saved_uiout; |
274 | ||
275 | /* Save and override the global ``struct ui_out'' builder. */ | |
79a45e25 PA |
276 | saved_uiout = current_uiout; |
277 | current_uiout = command_uiout; | |
cdb27c12 | 278 | |
492d29ea | 279 | TRY |
04bd08de TT |
280 | { |
281 | execute_command (command, from_tty); | |
282 | } | |
492d29ea | 283 | CATCH (exception, RETURN_MASK_ALL) |
7556d4a4 PA |
284 | { |
285 | e = exception; | |
286 | } | |
492d29ea | 287 | END_CATCH |
f9679975 PA |
288 | |
289 | /* Restore the global builder. */ | |
79a45e25 | 290 | current_uiout = saved_uiout; |
f9679975 | 291 | |
8a076db9 AC |
292 | /* FIXME: cagney/2005-01-13: This shouldn't be needed. Instead the |
293 | caller should print the exception. */ | |
9cbc821d | 294 | exception_print (gdb_stderr, e); |
8a076db9 | 295 | return e; |
4a8f6654 AC |
296 | } |
297 | ||
4801a9a3 PA |
298 | static struct ui_out * |
299 | cli_ui_out (struct interp *self) | |
300 | { | |
8322445e PA |
301 | struct cli_interp *cli = (struct cli_interp *) interp_data (self); |
302 | ||
303 | return cli->cli_uiout; | |
304 | } | |
305 | ||
306 | /* The CLI interpreter's vtable. */ | |
307 | ||
308 | static const struct interp_procs cli_interp_procs = { | |
309 | cli_interpreter_init, /* init_proc */ | |
310 | cli_interpreter_resume, /* resume_proc */ | |
311 | cli_interpreter_suspend, /* suspend_proc */ | |
312 | cli_interpreter_exec, /* exec_proc */ | |
313 | cli_ui_out, /* ui_out_proc */ | |
314 | NULL, /* set_logging_proc */ | |
3c216924 PA |
315 | cli_command_loop, /* command_loop_proc */ |
316 | cli_interpreter_supports_command_editing, /* supports_command_editing_proc */ | |
8322445e PA |
317 | }; |
318 | ||
319 | /* Factory for CLI interpreters. */ | |
320 | ||
321 | static struct interp * | |
322 | cli_interp_factory (const char *name) | |
323 | { | |
324 | struct cli_interp *cli = XNEW (struct cli_interp); | |
325 | ||
326 | /* Create a default uiout builder for the CLI. */ | |
327 | cli->cli_uiout = cli_out_new (gdb_stdout); | |
328 | ||
329 | return interp_new (name, &cli_interp_procs, cli); | |
4801a9a3 | 330 | } |
4a8f6654 | 331 | |
4791eb66 | 332 | /* Standard gdb initialization hook. */ |
b9362cc7 AC |
333 | extern initialize_file_ftype _initialize_cli_interp; /* -Wmissing-prototypes */ |
334 | ||
4a8f6654 AC |
335 | void |
336 | _initialize_cli_interp (void) | |
337 | { | |
8322445e | 338 | interp_factory_register (INTERP_CONSOLE, cli_interp_factory); |
73ab01a0 PA |
339 | |
340 | /* If changing this, remember to update tui-interp.c as well. */ | |
341 | observer_attach_normal_stop (cli_on_normal_stop); | |
342 | observer_attach_end_stepping_range (cli_on_end_stepping_range); | |
343 | observer_attach_signal_received (cli_on_signal_received); | |
344 | observer_attach_signal_exited (cli_on_signal_exited); | |
345 | observer_attach_exited (cli_on_exited); | |
346 | observer_attach_no_history (cli_on_no_history); | |
347 | observer_attach_sync_execution_done (cli_on_sync_execution_done); | |
348 | observer_attach_command_error (cli_on_command_error); | |
4a8f6654 | 349 | } |