/* TUI Interpreter definitions for GDB, the GNU debugger.
- Copyright (C) 2003 Free Software Foundation, Inc.
+ Copyright (C) 2003-2020 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., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
+#include "cli/cli-interp.h"
#include "interps.h"
#include "top.h"
#include "event-top.h"
-#include "event-loop.h"
+#include "gdbsupport/event-loop.h"
#include "ui-out.h"
#include "cli-out.h"
#include "tui/tui-data.h"
-#include "readline/readline.h"
#include "tui/tui-win.h"
#include "tui/tui.h"
#include "tui/tui-io.h"
-#include "exceptions.h"
+#include "infrun.h"
+#include "observable.h"
+#include "gdbthread.h"
+#include "inferior.h"
+#include "main.h"
-/* Set to 1 when the TUI mode must be activated when we first start gdb. */
-static int tui_start_enabled = 0;
+/* Set to true when the TUI mode must be activated when we first start
+ gdb. */
+static bool tui_start_enabled = false;
+
+class tui_interp final : public cli_interp_base
+{
+public:
+ explicit tui_interp (const char *name)
+ : cli_interp_base (name)
+ {}
+
+ void init (bool top_level) override;
+ void resume () override;
+ void suspend () override;
+ gdb_exception exec (const char *command_str) override;
+ ui_out *interp_ui_out () override;
+};
+
+/* Returns the INTERP if the INTERP is a TUI, and returns NULL
+ otherwise. */
+
+static tui_interp *
+as_tui_interp (struct interp *interp)
+{
+ return dynamic_cast<tui_interp *> (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 ();
}
+/* 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 normal_stop notification. */
+
+static void
+tui_on_normal_stop (struct bpstats *bs, int print_frame)
+{
+ if (!print_frame)
+ return;
+
+ SWITCH_THRU_ALL_UIS ()
+ {
+ struct interp *interp = top_level_interpreter ();
+ struct interp *tui = as_tui_interp (interp);
+ struct thread_info *thread;
+
+ if (tui == NULL)
+ continue;
+
+ thread = inferior_thread ();
+ if (should_print_stop_to_console (interp, thread))
+ print_stop_event (tui->interp_ui_out ());
+ }
+}
+
+/* Observer for the signal_received notification. */
+
+static void
+tui_on_signal_received (enum gdb_signal siggnal)
+{
+ SWITCH_THRU_ALL_UIS ()
+ {
+ struct interp *tui = as_tui_interp (top_level_interpreter ());
+
+ if (tui == NULL)
+ continue;
+
+ print_signal_received_reason (tui->interp_ui_out (), siggnal);
+ }
+}
+
+/* Observer for the end_stepping_range notification. */
+
+static void
+tui_on_end_stepping_range (void)
+{
+ SWITCH_THRU_ALL_UIS ()
+ {
+ struct interp *tui = as_tui_interp (top_level_interpreter ());
+
+ if (tui == NULL)
+ continue;
+
+ print_end_stepping_range_reason (tui->interp_ui_out ());
+ }
+}
+
+/* Observer for the signal_exited notification. */
+
+static void
+tui_on_signal_exited (enum gdb_signal siggnal)
+{
+ SWITCH_THRU_ALL_UIS ()
+ {
+ struct interp *tui = as_tui_interp (top_level_interpreter ());
+
+ if (tui == NULL)
+ continue;
+
+ print_signal_exited_reason (tui->interp_ui_out (), siggnal);
+ }
+}
+
+/* Observer for the exited notification. */
+
+static void
+tui_on_exited (int exitstatus)
+{
+ SWITCH_THRU_ALL_UIS ()
+ {
+ struct interp *tui = as_tui_interp (top_level_interpreter ());
+
+ if (tui == NULL)
+ continue;
+
+ print_exited_reason (tui->interp_ui_out (), exitstatus);
+ }
+}
+
+/* Observer for the no_history notification. */
+
+static void
+tui_on_no_history (void)
+{
+ SWITCH_THRU_ALL_UIS ()
+ {
+ struct interp *tui = as_tui_interp (top_level_interpreter ());
+
+ if (tui == NULL)
+ continue;
+
+ print_no_history_reason (tui->interp_ui_out ());
+ }
+}
+
+/* Observer for the sync_execution_done notification. */
+
+static void
+tui_on_sync_execution_done (void)
+{
+ struct interp *tui = as_tui_interp (top_level_interpreter ());
+
+ if (tui == NULL)
+ return;
+
+ display_gdb_prompt (NULL);
+}
+
+/* Observer for the command_error notification. */
+
+static void
+tui_on_command_error (void)
+{
+ struct interp *tui = as_tui_interp (top_level_interpreter ());
+
+ if (tui == NULL)
+ return;
+
+ display_gdb_prompt (NULL);
+}
+
+/* Observer for the user_selected_context_changed notification. */
+
+static void
+tui_on_user_selected_context_changed (user_selected_what selection)
+{
+ /* This event is suppressed. */
+ if (cli_suppress_notification.user_selected_context)
+ return;
+
+ thread_info *tp = inferior_ptid != null_ptid ? inferior_thread () : NULL;
+
+ SWITCH_THRU_ALL_UIS ()
+ {
+ struct interp *tui = as_tui_interp (top_level_interpreter ());
+
+ if (tui == NULL)
+ continue;
+
+ if (selection & USER_SELECTED_INFERIOR)
+ print_selected_inferior (tui->interp_ui_out ());
+
+ if (tp != NULL
+ && ((selection & (USER_SELECTED_THREAD | USER_SELECTED_FRAME))))
+ print_selected_thread_frame (tui->interp_ui_out (), selection);
+
+ }
+}
+
/* These implement the TUI interpreter. */
-static void *
-tui_init (void)
+void
+tui_interp::init (bool top_level)
{
/* Install exit handler to leave the screen in a good shape. */
atexit (tui_exit);
- tui_initialize_static_data ();
-
tui_initialize_io ();
- tui_initialize_readline ();
-
- return NULL;
+ tui_initialize_win ();
+ if (gdb_stdout->isatty ())
+ tui_initialize_readline ();
}
-static int
-tui_resume (void *data)
+void
+tui_interp::resume ()
{
+ struct ui *ui = current_ui;
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);
+ stream = tui_old_uiout->set_stream (gdb_stdout);
if (stream != gdb_stdout)
{
- cli_out_set_stream (tui_old_uiout, stream);
+ tui_old_uiout->set_stream (stream);
stream = NULL;
}
- gdb_setup_readline ();
+ gdb_setup_readline (1);
+
+ ui->input_handler = command_line_handler;
if (stream != NULL)
- cli_out_set_stream (tui_old_uiout, gdb_stdout);
+ tui_old_uiout->set_stream (gdb_stdout);
if (tui_start_enabled)
tui_enable ();
- return 1;
}
-static int
-tui_suspend (void *data)
+void
+tui_interp::suspend ()
{
tui_start_enabled = tui_active;
tui_disable ();
- return 1;
}
-/* Display the prompt if we are silent. */
-
-static int
-tui_display_prompt_p (void *data)
+ui_out *
+tui_interp::interp_ui_out ()
{
- if (interp_quiet_p (NULL))
- return 0;
+ if (tui_active)
+ return tui_out;
else
- return 1;
+ return tui_old_uiout;
}
-static struct gdb_exception
-tui_exec (void *data, const char *command_str)
+gdb_exception
+tui_interp::exec (const char *command_str)
{
internal_error (__FILE__, __LINE__, _("tui_exec called"));
}
-/* Initialize all the necessary variables, start the event loop,
- register readline, and stdin, start the loop. */
+/* Factory for TUI interpreters. */
-static void
-tui_command_loop (void *data)
+static struct interp *
+tui_interp_factory (const char *name)
{
- 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;
+ return new tui_interp (name);
}
+void _initialize_tui_interp ();
void
-_initialize_tui_interp (void)
-{
- static const struct interp_procs procs = {
- tui_init,
- tui_resume,
- tui_suspend,
- tui_exec,
- tui_display_prompt_p,
- tui_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 (INTERP_TUI, NULL, tui_out, &procs));
+_initialize_tui_interp ()
+{
+ interp_factory_register (INTERP_TUI, tui_interp_factory);
+
if (interpreter_p && strcmp (interpreter_p, INTERP_TUI) == 0)
- tui_start_enabled = 1;
+ tui_start_enabled = true;
if (interpreter_p && strcmp (interpreter_p, INTERP_CONSOLE) == 0)
{
xfree (interpreter_p);
interpreter_p = xstrdup (INTERP_TUI);
}
+
+ /* If changing this, remember to update cli-interp.c as well. */
+ gdb::observers::normal_stop.attach (tui_on_normal_stop);
+ gdb::observers::signal_received.attach (tui_on_signal_received);
+ gdb::observers::end_stepping_range.attach (tui_on_end_stepping_range);
+ gdb::observers::signal_exited.attach (tui_on_signal_exited);
+ gdb::observers::exited.attach (tui_on_exited);
+ gdb::observers::no_history.attach (tui_on_no_history);
+ gdb::observers::sync_execution_done.attach (tui_on_sync_execution_done);
+ gdb::observers::command_error.attach (tui_on_command_error);
+ gdb::observers::user_selected_context_changed.attach
+ (tui_on_user_selected_context_changed);
}
projects / deliverable / binutils-gdb.git / blobdiff