| /* TUI Interpreter definitions for GDB, the GNU debugger. |
| |
| Copyright (C) 2003-2016 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 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 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, 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 "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 "infrun.h" |
| #include "observer.h" |
| #include "gdbthread.h" |
| |
| 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; |
| |
| /* Returns the INTERP if the INTERP is a TUI, and returns NULL |
| otherwise. */ |
| |
| static struct interp * |
| as_tui_interp (struct interp *interp) |
| { |
| if (strcmp (interp_name (interp), INTERP_TUI) == 0) |
| return interp; |
| return NULL; |
| } |
| |
| /* 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()). */ |
| 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) |
| { |
| struct switch_thru_all_uis state; |
| |
| if (!print_frame) |
| return; |
| |
| SWITCH_THRU_ALL_UIS (state) |
| { |
| 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_ui_out (tui)); |
| } |
| } |
| |
| /* Observer for the signal_received notification. */ |
| |
| static void |
| tui_on_signal_received (enum gdb_signal siggnal) |
| { |
| struct switch_thru_all_uis state; |
| |
| SWITCH_THRU_ALL_UIS (state) |
| { |
| struct interp *tui = as_tui_interp (top_level_interpreter ()); |
| |
| if (tui == NULL) |
| continue; |
| |
| print_signal_received_reason (tui_ui_out (tui), siggnal); |
| } |
| } |
| |
| /* Observer for the end_stepping_range notification. */ |
| |
| static void |
| tui_on_end_stepping_range (void) |
| { |
| struct switch_thru_all_uis state; |
| |
| SWITCH_THRU_ALL_UIS (state) |
| { |
| struct interp *tui = as_tui_interp (top_level_interpreter ()); |
| |
| if (tui == NULL) |
| continue; |
| |
| print_end_stepping_range_reason (tui_ui_out (tui)); |
| } |
| } |
| |
| /* Observer for the signal_exited notification. */ |
| |
| static void |
| tui_on_signal_exited (enum gdb_signal siggnal) |
| { |
| struct switch_thru_all_uis state; |
| |
| SWITCH_THRU_ALL_UIS (state) |
| { |
| struct interp *tui = as_tui_interp (top_level_interpreter ()); |
| |
| if (tui == NULL) |
| continue; |
| |
| print_signal_exited_reason (tui_ui_out (tui), siggnal); |
| } |
| } |
| |
| /* Observer for the exited notification. */ |
| |
| static void |
| tui_on_exited (int exitstatus) |
| { |
| struct switch_thru_all_uis state; |
| |
| SWITCH_THRU_ALL_UIS (state) |
| { |
| struct interp *tui = as_tui_interp (top_level_interpreter ()); |
| |
| if (tui == NULL) |
| continue; |
| |
| print_exited_reason (tui_ui_out (tui), exitstatus); |
| } |
| } |
| |
| /* Observer for the no_history notification. */ |
| |
| static void |
| tui_on_no_history (void) |
| { |
| struct switch_thru_all_uis state; |
| |
| SWITCH_THRU_ALL_UIS (state) |
| { |
| struct interp *tui = as_tui_interp (top_level_interpreter ()); |
| |
| if (tui == NULL) |
| continue; |
| |
| print_no_history_reason (tui_ui_out (tui)); |
| } |
| } |
| |
| /* 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); |
| } |
| |
| /* These implement the TUI interpreter. */ |
| |
| static void * |
| tui_init (struct interp *self, int 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_win (); |
| if (ui_file_isatty (gdb_stdout)) |
| tui_initialize_readline (); |
| |
| return NULL; |
| } |
| |
| static int |
| tui_resume (void *data) |
| { |
| 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. */ |
| |
| stream = cli_out_set_stream (tui_old_uiout, gdb_stdout); |
| if (stream != gdb_stdout) |
| { |
| cli_out_set_stream (tui_old_uiout, stream); |
| stream = NULL; |
| } |
| |
| gdb_setup_readline (1); |
| |
| ui->input_handler = command_line_handler; |
| |
| if (stream != NULL) |
| cli_out_set_stream (tui_old_uiout, gdb_stdout); |
| |
| if (tui_start_enabled) |
| tui_enable (); |
| return 1; |
| } |
| |
| static int |
| tui_suspend (void *data) |
| { |
| tui_start_enabled = tui_active; |
| tui_disable (); |
| return 1; |
| } |
| |
| static struct ui_out * |
| tui_ui_out (struct interp *self) |
| { |
| if (tui_active) |
| return tui_out; |
| else |
| return tui_old_uiout; |
| } |
| |
| static struct gdb_exception |
| tui_exec (void *data, const char *command_str) |
| { |
| internal_error (__FILE__, __LINE__, _("tui_exec called")); |
| } |
| |
| /* The TUI interpreter's vtable. */ |
| |
| static const struct interp_procs tui_interp_procs = { |
| tui_init, |
| tui_resume, |
| tui_suspend, |
| tui_exec, |
| tui_ui_out, |
| NULL, |
| cli_interpreter_pre_command_loop, |
| cli_interpreter_supports_command_editing, |
| }; |
| |
| /* Factory for TUI interpreters. */ |
| |
| static struct interp * |
| tui_interp_factory (const char *name) |
| { |
| return interp_new (name, &tui_interp_procs, NULL); |
| } |
| |
| /* Provide a prototype to silence -Wmissing-prototypes. */ |
| extern initialize_file_ftype _initialize_tui_interp; |
| |
| void |
| _initialize_tui_interp (void) |
| { |
| interp_factory_register (INTERP_TUI, tui_interp_factory); |
| |
| 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 (INTERP_TUI); |
| } |
| |
| /* If changing this, remember to update cli-interp.c as well. */ |
| observer_attach_normal_stop (tui_on_normal_stop); |
| 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); |
| observer_attach_sync_execution_done (tui_on_sync_execution_done); |
| observer_attach_command_error (tui_on_command_error); |
| } |