3 Copyright (C) 2001-2018 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/>. */
29 #include "event-loop.h"
30 #include "event-top.h"
32 #include "breakpoint.h"
35 #include "observable.h"
40 #include "tui/tui-hooks.h"
41 #include "tui/tui-data.h"
42 #include "tui/tui-layout.h"
43 #include "tui/tui-io.h"
44 #include "tui/tui-regs.h"
45 #include "tui/tui-win.h"
46 #include "tui/tui-stack.h"
47 #include "tui/tui-windata.h"
48 #include "tui/tui-winsource.h"
50 #include "gdb_curses.h"
52 /* This redefines CTRL if it is not already defined, so it must come
53 after terminal state releated include files like <term.h> and
55 #include "readline/readline.h"
58 tui_new_objfile_hook (struct objfile* objfile)
64 /* Prevent recursion of deprecated_register_changed_hook(). */
65 static int tui_refreshing_registers = 0;
67 /* Observer for the register_changed notification. */
70 tui_register_changed (struct frame_info *frame, int regno)
72 struct frame_info *fi;
74 /* The frame of the register that was changed may differ from the selected
75 frame, but we only want to show the register values of the selected frame.
76 And even if the frames differ a register change made in one can still show
77 up in the other. So we always use the selected frame here, and ignore
79 fi = get_selected_frame (NULL);
80 if (tui_refreshing_registers == 0)
82 tui_refreshing_registers = 1;
83 tui_check_data_values (fi);
84 tui_refreshing_registers = 0;
88 /* Breakpoint creation hook.
89 Update the screen to show the new breakpoint. */
91 tui_event_create_breakpoint (struct breakpoint *b)
93 tui_update_all_breakpoint_info ();
96 /* Breakpoint deletion hook.
97 Refresh the screen to update the breakpoint marks. */
99 tui_event_delete_breakpoint (struct breakpoint *b)
101 tui_update_all_breakpoint_info ();
105 tui_event_modify_breakpoint (struct breakpoint *b)
107 tui_update_all_breakpoint_info ();
110 /* Refresh TUI's frame and register information. This is a hook intended to be
111 used to update the screen after potential frame and register changes.
113 REGISTERS_TOO_P controls whether to refresh our register information even
114 if frame information hasn't changed. */
117 tui_refresh_frame_and_register_information (int registers_too_p)
119 struct frame_info *fi;
121 int frame_info_changed_p;
123 if (!has_stack_frames ())
126 target_terminal::scoped_restore_terminal_state term_state;
127 target_terminal::ours_for_output ();
129 fi = get_selected_frame (NULL);
130 /* Ensure that symbols for this frame are read in. Also, determine
131 the source language of this frame, and switch to it if
133 if (get_frame_pc_if_available (fi, &pc))
137 s = find_pc_line_symtab (pc);
138 /* elz: This if here fixes the problem with the pc not being
139 displayed in the tui asm layout, with no debug symbols. The
140 value of s would be 0 here, and select_source_symtab would
141 abort the command by calling the 'error' function. */
143 select_source_symtab (s);
146 /* Display the frame position (even if there is no symbols or the PC
148 frame_info_changed_p = tui_show_frame_info (fi);
150 /* Refresh the register window if it's visible. */
151 if (tui_is_window_visible (DATA_WIN)
152 && (frame_info_changed_p || registers_too_p))
154 tui_refreshing_registers = 1;
155 tui_check_data_values (fi);
156 tui_refreshing_registers = 0;
160 /* Dummy callback for deprecated_print_frame_info_listing_hook which is called
161 from print_frame_info. */
164 tui_dummy_print_frame_info_listing_hook (struct symtab *s,
171 /* Perform all necessary cleanups regarding our module's inferior data
172 that is required after the inferior INF just exited. */
175 tui_inferior_exit (struct inferior *inf)
177 /* Leave the SingleKey mode to make sure the gdb prompt is visible. */
178 tui_set_key_mode (TUI_COMMAND_MODE);
179 tui_show_frame_info (0);
183 /* Observer for the before_prompt notification. */
186 tui_before_prompt (const char *current_gdb_prompt)
188 /* This refresh is intended to catch changes to the selected frame following
189 a call to "up", "down" or "frame". As such we don't necessarily want to
190 refresh registers here unless the frame actually changed by one of these
191 commands. Registers will otherwise be refreshed after a normal stop or by
192 our tui_register_changed_hook. */
193 tui_refresh_frame_and_register_information (/*registers_too_p=*/0);
196 /* Observer for the normal_stop notification. */
199 tui_normal_stop (struct bpstats *bs, int print_frame)
201 /* This refresh is intended to catch changes to the selected frame and to
202 registers following a normal stop. */
203 tui_refresh_frame_and_register_information (/*registers_too_p=*/1);
206 /* Token associated with observers registered while TUI hooks are
208 static const gdb::observers::token tui_observers_token {};
210 /* Attach or detach a single observer, according to ATTACH. */
214 attach_or_detach (T &observable, typename T::func_type func, bool attach)
217 observable.attach (func, tui_observers_token);
219 observable.detach (tui_observers_token);
222 /* Attach or detach TUI observers, according to ATTACH. */
225 tui_attach_detach_observers (bool attach)
227 attach_or_detach (gdb::observers::breakpoint_created,
228 tui_event_create_breakpoint, attach);
229 attach_or_detach (gdb::observers::breakpoint_deleted,
230 tui_event_delete_breakpoint, attach);
231 attach_or_detach (gdb::observers::breakpoint_modified,
232 tui_event_modify_breakpoint, attach);
233 attach_or_detach (gdb::observers::inferior_exit,
234 tui_inferior_exit, attach);
235 attach_or_detach (gdb::observers::before_prompt,
236 tui_before_prompt, attach);
237 attach_or_detach (gdb::observers::normal_stop,
238 tui_normal_stop, attach);
239 attach_or_detach (gdb::observers::register_changed,
240 tui_register_changed, attach);
243 /* Install the TUI specific hooks. */
245 tui_install_hooks (void)
247 /* If this hook is not set to something then print_frame_info will
248 assume that the CLI, not the TUI, is active, and will print the frame info
249 for us in such a way that we are not prepared to handle. This hook is
250 otherwise effectively obsolete. */
251 deprecated_print_frame_info_listing_hook
252 = tui_dummy_print_frame_info_listing_hook;
254 /* Install the event hooks. */
255 tui_attach_detach_observers (true);
258 /* Remove the TUI specific hooks. */
260 tui_remove_hooks (void)
262 deprecated_print_frame_info_listing_hook = 0;
263 deprecated_query_hook = 0;
265 /* Remove our observers. */
266 tui_attach_detach_observers (false);
270 _initialize_tui_hooks (void)
272 /* Install the permanent hooks. */
273 gdb::observers::new_objfile.attach (tui_new_objfile_hook);