1 /* CLI Definitions for GDB, the GNU debugger.
3 Copyright (C) 2002-2015 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
22 #include "event-top.h"
25 #include "top.h" /* for "execute_command" */
29 /* These are the ui_out and the interpreter for the console
31 struct ui_out *cli_uiout;
32 static struct interp *cli_interp;
34 /* Longjmp-safe wrapper for "execute_command". */
35 static struct gdb_exception safe_execute_command (struct ui_out *uiout,
39 /* Observers for several run control events. If the interpreter is
40 quiet (i.e., another interpreter is being run with
41 interpreter-exec), print nothing. */
43 /* Observer for the normal_stop notification. */
46 cli_on_normal_stop (struct bpstats *bs, int print_frame)
48 if (!interp_quiet_p (cli_interp))
51 print_stop_event (cli_uiout);
55 /* Observer for the signal_received notification. */
58 cli_on_signal_received (enum gdb_signal siggnal)
60 if (!interp_quiet_p (cli_interp))
61 print_signal_received_reason (cli_uiout, siggnal);
64 /* Observer for the end_stepping_range notification. */
67 cli_on_end_stepping_range (void)
69 if (!interp_quiet_p (cli_interp))
70 print_end_stepping_range_reason (cli_uiout);
73 /* Observer for the signalled notification. */
76 cli_on_signal_exited (enum gdb_signal siggnal)
78 if (!interp_quiet_p (cli_interp))
79 print_signal_exited_reason (cli_uiout, siggnal);
82 /* Observer for the exited notification. */
85 cli_on_exited (int exitstatus)
87 if (!interp_quiet_p (cli_interp))
88 print_exited_reason (cli_uiout, exitstatus);
91 /* Observer for the no_history notification. */
94 cli_on_no_history (void)
96 if (!interp_quiet_p (cli_interp))
97 print_no_history_reason (cli_uiout);
100 /* Observer for the sync_execution_done notification. */
103 cli_on_sync_execution_done (void)
105 if (!interp_quiet_p (cli_interp))
106 display_gdb_prompt (NULL);
109 /* Observer for the command_error notification. */
112 cli_on_command_error (void)
114 if (!interp_quiet_p (cli_interp))
115 display_gdb_prompt (NULL);
118 /* These implement the cli out interpreter: */
121 cli_interpreter_init (struct interp *self, int top_level)
123 /* If changing this, remember to update tui-interp.c as well. */
124 observer_attach_normal_stop (cli_on_normal_stop);
125 observer_attach_end_stepping_range (cli_on_end_stepping_range);
126 observer_attach_signal_received (cli_on_signal_received);
127 observer_attach_signal_exited (cli_on_signal_exited);
128 observer_attach_exited (cli_on_exited);
129 observer_attach_no_history (cli_on_no_history);
130 observer_attach_sync_execution_done (cli_on_sync_execution_done);
131 observer_attach_command_error (cli_on_command_error);
137 cli_interpreter_resume (void *data)
139 struct ui_file *stream;
141 /*sync_execution = 1; */
143 /* gdb_setup_readline will change gdb_stdout. If the CLI was
144 previously writing to gdb_stdout, then set it to the new
145 gdb_stdout afterwards. */
147 stream = cli_out_set_stream (cli_uiout, gdb_stdout);
148 if (stream != gdb_stdout)
150 cli_out_set_stream (cli_uiout, stream);
154 gdb_setup_readline ();
157 cli_out_set_stream (cli_uiout, gdb_stdout);
163 cli_interpreter_suspend (void *data)
165 gdb_disable_readline ();
169 static struct gdb_exception
170 cli_interpreter_exec (void *data, const char *command_str)
172 struct ui_file *old_stream;
173 struct gdb_exception result;
175 /* FIXME: cagney/2003-02-01: Need to const char *propogate
176 safe_execute_command. */
177 char *str = strcpy (alloca (strlen (command_str) + 1), command_str);
179 /* gdb_stdout could change between the time cli_uiout was
180 initialized and now. Since we're probably using a different
181 interpreter which has a new ui_file for gdb_stdout, use that one
182 instead of the default.
184 It is important that it gets reset everytime, since the user
185 could set gdb to use a different interpreter. */
186 old_stream = cli_out_set_stream (cli_uiout, gdb_stdout);
187 result = safe_execute_command (cli_uiout, str, 1);
188 cli_out_set_stream (cli_uiout, old_stream);
192 static struct gdb_exception
193 safe_execute_command (struct ui_out *command_uiout, char *command, int from_tty)
195 struct gdb_exception e = exception_none;
196 struct ui_out *saved_uiout;
198 /* Save and override the global ``struct ui_out'' builder. */
199 saved_uiout = current_uiout;
200 current_uiout = command_uiout;
204 execute_command (command, from_tty);
206 CATCH (exception, RETURN_MASK_ALL)
212 /* Restore the global builder. */
213 current_uiout = saved_uiout;
215 /* FIXME: cagney/2005-01-13: This shouldn't be needed. Instead the
216 caller should print the exception. */
217 exception_print (gdb_stderr, e);
221 static struct ui_out *
222 cli_ui_out (struct interp *self)
227 /* Standard gdb initialization hook. */
228 extern initialize_file_ftype _initialize_cli_interp; /* -Wmissing-prototypes */
231 _initialize_cli_interp (void)
233 static const struct interp_procs procs = {
234 cli_interpreter_init, /* init_proc */
235 cli_interpreter_resume, /* resume_proc */
236 cli_interpreter_suspend, /* suspend_proc */
237 cli_interpreter_exec, /* exec_proc */
238 cli_ui_out, /* ui_out_proc */
239 NULL, /* set_logging_proc */
240 cli_command_loop /* command_loop_proc */
243 /* Create a default uiout builder for the CLI. */
244 cli_uiout = cli_out_new (gdb_stdout);
245 cli_interp = interp_new (INTERP_CONSOLE, &procs);
247 interp_add (cli_interp);