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
);