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 signal_received notification. */
46 cli_on_signal_received (enum gdb_signal siggnal)
48 if (!interp_quiet_p (cli_interp))
49 print_signal_received_reason (cli_uiout, siggnal);
52 /* Observer for the end_stepping_range notification. */
55 cli_on_end_stepping_range (void)
57 if (!interp_quiet_p (cli_interp))
58 print_end_stepping_range_reason (cli_uiout);
61 /* Observer for the signalled notification. */
64 cli_on_signal_exited (enum gdb_signal siggnal)
66 if (!interp_quiet_p (cli_interp))
67 print_signal_exited_reason (cli_uiout, siggnal);
70 /* Observer for the exited notification. */
73 cli_on_exited (int exitstatus)
75 if (!interp_quiet_p (cli_interp))
76 print_exited_reason (cli_uiout, exitstatus);
79 /* Observer for the no_history notification. */
82 cli_on_no_history (void)
84 if (!interp_quiet_p (cli_interp))
85 print_no_history_reason (cli_uiout);
88 /* Observer for the sync_execution_done notification. */
91 cli_on_sync_execution_done (void)
93 if (!interp_quiet_p (cli_interp))
94 display_gdb_prompt (NULL);
97 /* Observer for the command_error notification. */
100 cli_on_command_error (void)
102 if (!interp_quiet_p (cli_interp))
103 display_gdb_prompt (NULL);
106 /* These implement the cli out interpreter: */
109 cli_interpreter_init (struct interp *self, int top_level)
111 /* If changing this, remember to update tui-interp.c as well. */
112 observer_attach_end_stepping_range (cli_on_end_stepping_range);
113 observer_attach_signal_received (cli_on_signal_received);
114 observer_attach_signal_exited (cli_on_signal_exited);
115 observer_attach_exited (cli_on_exited);
116 observer_attach_no_history (cli_on_no_history);
117 observer_attach_sync_execution_done (cli_on_sync_execution_done);
118 observer_attach_command_error (cli_on_command_error);
124 cli_interpreter_resume (void *data)
126 struct ui_file *stream;
128 /*sync_execution = 1; */
130 /* gdb_setup_readline will change gdb_stdout. If the CLI was
131 previously writing to gdb_stdout, then set it to the new
132 gdb_stdout afterwards. */
134 stream = cli_out_set_stream (cli_uiout, gdb_stdout);
135 if (stream != gdb_stdout)
137 cli_out_set_stream (cli_uiout, stream);
141 gdb_setup_readline ();
144 cli_out_set_stream (cli_uiout, gdb_stdout);
150 cli_interpreter_suspend (void *data)
152 gdb_disable_readline ();
156 static struct gdb_exception
157 cli_interpreter_exec (void *data, const char *command_str)
159 struct ui_file *old_stream;
160 struct gdb_exception result;
162 /* FIXME: cagney/2003-02-01: Need to const char *propogate
163 safe_execute_command. */
164 char *str = strcpy (alloca (strlen (command_str) + 1), command_str);
166 /* gdb_stdout could change between the time cli_uiout was
167 initialized and now. Since we're probably using a different
168 interpreter which has a new ui_file for gdb_stdout, use that one
169 instead of the default.
171 It is important that it gets reset everytime, since the user
172 could set gdb to use a different interpreter. */
173 old_stream = cli_out_set_stream (cli_uiout, gdb_stdout);
174 result = safe_execute_command (cli_uiout, str, 1);
175 cli_out_set_stream (cli_uiout, old_stream);
179 static struct gdb_exception
180 safe_execute_command (struct ui_out *command_uiout, char *command, int from_tty)
182 volatile struct gdb_exception e;
183 struct ui_out *saved_uiout;
185 /* Save and override the global ``struct ui_out'' builder. */
186 saved_uiout = current_uiout;
187 current_uiout = command_uiout;
189 TRY_CATCH (e, RETURN_MASK_ALL)
191 execute_command (command, from_tty);
194 /* Restore the global builder. */
195 current_uiout = saved_uiout;
197 /* FIXME: cagney/2005-01-13: This shouldn't be needed. Instead the
198 caller should print the exception. */
199 exception_print (gdb_stderr, e);
203 static struct ui_out *
204 cli_ui_out (struct interp *self)
209 /* Standard gdb initialization hook. */
210 extern initialize_file_ftype _initialize_cli_interp; /* -Wmissing-prototypes */
213 _initialize_cli_interp (void)
215 static const struct interp_procs procs = {
216 cli_interpreter_init, /* init_proc */
217 cli_interpreter_resume, /* resume_proc */
218 cli_interpreter_suspend, /* suspend_proc */
219 cli_interpreter_exec, /* exec_proc */
220 cli_ui_out, /* ui_out_proc */
221 NULL, /* set_logging_proc */
222 cli_command_loop /* command_loop_proc */
225 /* Create a default uiout builder for the CLI. */
226 cli_uiout = cli_out_new (gdb_stdout);
227 cli_interp = interp_new (INTERP_CONSOLE, &procs);
229 interp_add (cli_interp);