/* TUI Interpreter definitions for GDB, the GNU debugger.
- Copyright 2003 Free Software Foundation, Inc.
+ Copyright (C) 2003-2014 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "interps.h"
#include "tui/tui-win.h"
#include "tui/tui.h"
#include "tui/tui-io.h"
+#include "exceptions.h"
+#include "infrun.h"
+#include "observer.h"
-/* Set to 1 when the TUI mode must be activated when we first start gdb. */
+static struct ui_out *tui_ui_out (struct interp *self);
+
+/* Set to 1 when the TUI mode must be activated when we first start
+ gdb. */
static int tui_start_enabled = 0;
+/* The TUI interpreter. */
+static struct interp *tui_interp;
+
/* Cleanup the tui before exiting. */
static void
tui_exit (void)
{
- /* Disable the tui. Curses mode is left leaving the screen
- in a clean state (see endwin()). */
+ /* Disable the tui. Curses mode is left leaving the screen in a
+ clean state (see endwin()). */
tui_disable ();
}
+/* True if TUI is the top-level interpreter. */
+static int tui_is_toplevel = 0;
+
+/* Observers for several run control events. If the interpreter is
+ quiet (i.e., another interpreter is being run with
+ interpreter-exec), print nothing. */
+
+/* Observer for the signal_received notification. */
+
+static void
+tui_on_signal_received (enum gdb_signal siggnal)
+{
+ if (!interp_quiet_p (tui_interp))
+ print_signal_received_reason (tui_ui_out (tui_interp), siggnal);
+}
+
+/* Observer for the end_stepping_range notification. */
+
+static void
+tui_on_end_stepping_range (void)
+{
+ if (!interp_quiet_p (tui_interp))
+ print_end_stepping_range_reason (tui_ui_out (tui_interp));
+}
+
+/* Observer for the signal_exited notification. */
+
+static void
+tui_on_signal_exited (enum gdb_signal siggnal)
+{
+ if (!interp_quiet_p (tui_interp))
+ print_signal_exited_reason (tui_ui_out (tui_interp), siggnal);
+}
+
+/* Observer for the exited notification. */
+
+static void
+tui_on_exited (int exitstatus)
+{
+ if (!interp_quiet_p (tui_interp))
+ print_exited_reason (tui_ui_out (tui_interp), exitstatus);
+}
+
+/* Observer for the no_history notification. */
+
+static void
+tui_on_no_history (void)
+{
+ if (!interp_quiet_p (tui_interp))
+ print_no_history_reason (tui_ui_out (tui_interp));
+}
+
/* These implement the TUI interpreter. */
static void *
-tui_init (void)
+tui_init (struct interp *self, int top_level)
{
+ tui_is_toplevel = top_level;
+
/* Install exit handler to leave the screen in a good shape. */
atexit (tui_exit);
- initializeStaticData ();
+ tui_initialize_static_data ();
tui_initialize_io ();
- tui_initialize_readline ();
+ tui_initialize_win ();
+ if (ui_file_isatty (gdb_stdout))
+ tui_initialize_readline ();
+
+ /* If changing this, remember to update cli-interp.c as well. */
+ observer_attach_signal_received (tui_on_signal_received);
+ observer_attach_end_stepping_range (tui_on_end_stepping_range);
+ observer_attach_signal_exited (tui_on_signal_exited);
+ observer_attach_exited (tui_on_exited);
+ observer_attach_no_history (tui_on_no_history);
return NULL;
}
+/* True if enabling the TUI is allowed. Example, if the top level
+ interpreter is MI, enabling curses will certainly lose. */
+
+int
+tui_allowed_p (void)
+{
+ /* Only if TUI is the top level interpreter. Also don't try to
+ setup curses (and print funny control characters) if we're not
+ outputting to a terminal. */
+ return tui_is_toplevel && ui_file_isatty (gdb_stdout);
+}
+
static int
tui_resume (void *data)
{
struct ui_file *stream;
- /* gdb_setup_readline will change gdb_stdout. If the TUI was previously
- writing to gdb_stdout, then set it to the new gdb_stdout afterwards. */
+ /* gdb_setup_readline will change gdb_stdout. If the TUI was
+ previously writing to gdb_stdout, then set it to the new
+ gdb_stdout afterwards. */
stream = cli_out_set_stream (tui_old_uiout, gdb_stdout);
if (stream != gdb_stdout)
return 1;
}
-static int
-tui_exec (void *data, const char *command_str)
+static struct ui_out *
+tui_ui_out (struct interp *self)
{
- internal_error (__FILE__, __LINE__, "tui_exec called");
+ if (tui_active)
+ return tui_out;
+ else
+ return tui_old_uiout;
}
-
-/* Initialize all the necessary variables, start the event loop,
- register readline, and stdin, start the loop. */
-
-static void
-tui_command_loop (void *data)
+static struct gdb_exception
+tui_exec (void *data, const char *command_str)
{
- int length;
- char *a_prompt;
- char *gdb_prompt = get_prompt ();
-
- /* If we are using readline, set things up and display the first
- prompt, otherwise just print the prompt. */
- if (async_command_editing_p)
- {
- /* Tell readline what the prompt to display is and what function
- it will need to call after a whole line is read. This also
- displays the first prompt. */
- length = strlen (PREFIX (0)) + strlen (gdb_prompt) + strlen (SUFFIX (0)) + 1;
- a_prompt = (char *) xmalloc (length);
- strcpy (a_prompt, PREFIX (0));
- strcat (a_prompt, gdb_prompt);
- strcat (a_prompt, SUFFIX (0));
- rl_callback_handler_install (a_prompt, input_handler);
- }
- else
- display_gdb_prompt (0);
-
- /* Loop until there is nothing to do. This is the entry point to the
- event loop engine. gdb_do_one_event, called via catch_errors()
- will process one event for each invocation. It blocks waits for
- an event and then processes it. >0 when an event is processed, 0
- when catch_errors() caught an error and <0 when there are no
- longer any event sources registered. */
- while (1)
- {
- int result = catch_errors (gdb_do_one_event, 0, "", RETURN_MASK_ALL);
- if (result < 0)
- break;
-
- /* Update gdb output according to TUI mode. Since catch_errors
- preserves the uiout from changing, this must be done at top
- level of event loop. */
- if (tui_active)
- uiout = tui_out;
- else
- uiout = tui_old_uiout;
-
- if (result == 0)
- {
- /* FIXME: this should really be a call to a hook that is
- interface specific, because interfaces can display the
- prompt in their own way. */
- display_gdb_prompt (0);
- /* This call looks bizarre, but it is required. If the user
- entered a command that caused an error,
- after_char_processing_hook won't be called from
- rl_callback_read_char_wrapper. Using a cleanup there
- won't work, since we want this function to be called
- after a new prompt is printed. */
- if (after_char_processing_hook)
- (*after_char_processing_hook) ();
- /* Maybe better to set a flag to be checked somewhere as to
- whether display the prompt or not. */
- }
- }
-
- /* We are done with the event loop. There are no more event sources
- to listen to. So we exit GDB. */
- return;
+ internal_error (__FILE__, __LINE__, _("tui_exec called"));
}
+/* Provide a prototype to silence -Wmissing-prototypes. */
+extern initialize_file_ftype _initialize_tui_interp;
+
void
_initialize_tui_interp (void)
{
tui_suspend,
tui_exec,
tui_display_prompt_p,
- tui_command_loop,
+ tui_ui_out,
+ NULL,
+ cli_command_loop
};
- struct interp *tui_interp;
- /* Create a default uiout builder for the TUI. */
- tui_out = tui_out_new (gdb_stdout);
- interp_add (interp_new ("tui", NULL, tui_out, &procs));
- if (interpreter_p && strcmp (interpreter_p, "tui") == 0)
+ /* Create a default uiout builder for the TUI. */
+ tui_interp = interp_new (INTERP_TUI, &procs);
+ interp_add (tui_interp);
+ if (interpreter_p && strcmp (interpreter_p, INTERP_TUI) == 0)
tui_start_enabled = 1;
if (interpreter_p && strcmp (interpreter_p, INTERP_CONSOLE) == 0)
{
xfree (interpreter_p);
- interpreter_p = xstrdup ("tui");
+ interpreter_p = xstrdup (INTERP_TUI);
}
}
projects / deliverable / binutils-gdb.git / blobdiff