/* GDB hooks for TUI.
- Copyright 2001, 2002 Free Software Foundation, Inc.
+ Copyright (C) 2001-2013 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. */
-
-/* FIXME: cagney/2002-02-28: The GDB coding standard indicates that
- "defs.h" should be included first. Unfortunatly some systems
- (currently Debian GNU/Linux) include the <stdbool.h> via <curses.h>
- and they clash with "bfd.h"'s definiton of true/false. The correct
- fix is to remove true/false from "bfd.h", however, until that
- happens, hack around it by including "config.h" and <curses.h>
- first. */
-
-#include "config.h"
-#ifdef HAVE_NCURSES_H
-#include <ncurses.h>
-#else
-#ifdef HAVE_CURSES_H
-#include <curses.h>
-#endif
-#endif
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "symtab.h"
#include "event-top.h"
#include "frame.h"
#include "breakpoint.h"
-#include "gdb-events.h"
#include "ui-out.h"
#include "top.h"
-#include <readline/readline.h>
+#include "observer.h"
#include <unistd.h>
#include <fcntl.h>
-#include "tui.h"
-#include "tuiData.h"
-#include "tuiLayout.h"
-#include "tuiIO.h"
-#include "tuiRegs.h"
-#include "tuiWin.h"
-#include "tuiStack.h"
-#include "tuiDataWin.h"
-#include "tuiSourceWin.h"
+#include "tui/tui.h"
+#include "tui/tui-hooks.h"
+#include "tui/tui-data.h"
+#include "tui/tui-layout.h"
+#include "tui/tui-io.h"
+#include "tui/tui-regs.h"
+#include "tui/tui-win.h"
+#include "tui/tui-stack.h"
+#include "tui/tui-windata.h"
+#include "tui/tui-winsource.h"
-int tui_target_has_run = 0;
+#include "gdb_curses.h"
-static void (* tui_target_new_objfile_chain) (struct objfile*);
-static void tui_event_loop (void);
-static void tui_command_loop (void);
+/* This redefines CTRL if it is not already defined, so it must come
+ after terminal state releated include files like <term.h> and
+ "gdb_curses.h". */
+#include "readline/readline.h"
+
+int tui_target_has_run = 0;
static void
tui_new_objfile_hook (struct objfile* objfile)
{
if (tui_active)
tui_display_main ();
-
- if (tui_target_new_objfile_chain)
- tui_target_new_objfile_chain (objfile);
}
-static int
-tui_query_hook (const char * msg, va_list argp)
+static int ATTRIBUTE_PRINTF (1, 0)
+tui_query_hook (const char *msg, va_list argp)
{
int retval;
int ans2;
int answer;
+ char *question;
+ struct cleanup *old_chain;
- /* Automatically answer "yes" if input is not from a terminal. */
- if (!input_from_terminal_p ())
- return 1;
+ /* Format the question outside of the loop, to avoid reusing
+ ARGP. */
+ question = xstrvprintf (msg, argp);
+ old_chain = make_cleanup (xfree, question);
echo ();
while (1)
{
- wrap_here (""); /* Flush any buffered output */
+ wrap_here (""); /* Flush any buffered output. */
gdb_flush (gdb_stdout);
- vfprintf_filtered (gdb_stdout, msg, argp);
- printf_filtered ("(y or n) ");
+ fputs_filtered (question, gdb_stdout);
+ printf_filtered (_("(y or n) "));
wrap_here ("");
gdb_flush (gdb_stdout);
retval = 1;
break;
}
- /* Eat rest of input line, to EOF or newline */
+ /* Eat rest of input line, to EOF or newline. */
if (answer != '\n')
do
{
retval = 0;
break;
}
- printf_filtered ("Please answer y or n.\n");
+ printf_filtered (_("Please answer y or n.\n"));
}
noecho ();
+
+ do_cleanups (old_chain);
return retval;
}
-/* Prevent recursion of registers_changed_hook(). */
+/* Prevent recursion of deprecated_register_changed_hook(). */
static int tui_refreshing_registers = 0;
-static void
-tui_registers_changed_hook (void)
-{
- struct frame_info *fi;
-
- fi = deprecated_selected_frame;
- if (fi && tui_refreshing_registers == 0)
- {
- tui_refreshing_registers = 1;
-#if 0
- tuiCheckDataValues (fi);
-#endif
- tui_refreshing_registers = 0;
- }
-}
-
static void
tui_register_changed_hook (int regno)
{
struct frame_info *fi;
- fi = deprecated_selected_frame;
- if (fi && tui_refreshing_registers == 0)
+ fi = get_selected_frame (NULL);
+ if (tui_refreshing_registers == 0)
{
tui_refreshing_registers = 1;
- tuiCheckDataValues (fi);
+ tui_check_data_values (fi);
tui_refreshing_registers = 0;
}
}
/* Breakpoint creation hook.
Update the screen to show the new breakpoint. */
static void
-tui_event_create_breakpoint (int number)
+tui_event_create_breakpoint (struct breakpoint *b)
{
tui_update_all_breakpoint_info ();
}
/* Breakpoint deletion hook.
Refresh the screen to update the breakpoint marks. */
static void
-tui_event_delete_breakpoint (int number)
+tui_event_delete_breakpoint (struct breakpoint *b)
{
tui_update_all_breakpoint_info ();
}
static void
-tui_event_modify_breakpoint (int number)
+tui_event_modify_breakpoint (struct breakpoint *b)
{
tui_update_all_breakpoint_info ();
}
-static void
-tui_event_default (int number)
-{
- ;
-}
-
-static struct gdb_events *tui_old_event_hooks;
+/* Called when a command is about to proceed the inferior. */
-static struct gdb_events tui_event_hooks =
-{
- tui_event_create_breakpoint,
- tui_event_delete_breakpoint,
- tui_event_modify_breakpoint,
- tui_event_default,
- tui_event_default,
- tui_event_default
-};
-
-/* Called when going to wait for the target.
- Leave curses mode and setup program mode. */
-static ptid_t
-tui_target_wait_hook (ptid_t pid, struct target_waitstatus *status)
+static void
+tui_about_to_proceed (void)
{
- ptid_t res;
-
/* Leave tui mode (optional). */
#if 0
if (tui_active)
}
#endif
tui_target_has_run = 1;
- res = target_wait (pid, status);
-
- if (tui_active)
- {
- /* TODO: need to refresh (optional). */
- }
- return res;
}
/* The selected frame has changed. This is happens after a target
- stop or when the user explicitly changes the frame (up/down/thread/...). */
+ stop or when the user explicitly changes the frame
+ (up/down/thread/...). */
static void
tui_selected_frame_level_changed_hook (int level)
{
struct frame_info *fi;
+ CORE_ADDR pc;
+
+ /* Negative level means that the selected frame was cleared. */
+ if (level < 0)
+ return;
- fi = deprecated_selected_frame;
- /* Ensure that symbols for this frame are read in. Also, determine the
- source language of this frame, and switch to it if desired. */
- if (fi)
+ fi = get_selected_frame (NULL);
+ /* Ensure that symbols for this frame are read in. Also, determine
+ the source language of this frame, and switch to it if
+ desired. */
+ if (get_frame_pc_if_available (fi, &pc))
{
struct symtab *s;
-
- s = find_pc_symtab (fi->pc);
- /* elz: this if here fixes the problem with the pc not being displayed
- in the tui asm layout, with no debug symbols. The value of s
- would be 0 here, and select_source_symtab would abort the
- command by calling the 'error' function */
+
+ s = find_pc_symtab (pc);
+ /* elz: This if here fixes the problem with the pc not being
+ displayed in the tui asm layout, with no debug symbols. The
+ value of s would be 0 here, and select_source_symtab would
+ abort the command by calling the 'error' function. */
if (s)
- select_source_symtab (s);
-
- /* Display the frame position (even if there is no symbols). */
- tuiShowFrameInfo (fi);
-
- /* Refresh the register window if it's visible. */
- if (tui_is_window_visible (DATA_WIN))
- {
- tui_refreshing_registers = 1;
- tuiCheckDataValues (fi);
- tui_refreshing_registers = 0;
- }
+ select_source_symtab (s);
+ }
+
+ /* Display the frame position (even if there is no symbols or the PC
+ is not known). */
+ tui_show_frame_info (fi);
+
+ /* Refresh the register window if it's visible. */
+ if (tui_is_window_visible (DATA_WIN))
+ {
+ tui_refreshing_registers = 1;
+ tui_check_data_values (fi);
+ tui_refreshing_registers = 0;
}
}
/* Called from print_frame_info to list the line we stopped in. */
static void
-tui_print_frame_info_listing_hook (struct symtab *s, int line,
- int stopline, int noerror)
+tui_print_frame_info_listing_hook (struct symtab *s,
+ int line,
+ int stopline,
+ int noerror)
{
select_source_symtab (s);
- tuiShowFrameInfo (deprecated_selected_frame);
+ tui_show_frame_info (get_selected_frame (NULL));
}
-/* Called when the target process died or is detached.
- Update the status line. */
+/* Perform all necessary cleanups regarding our module's inferior data
+ that is required after the inferior INF just exited. */
+
static void
-tui_detach_hook (void)
+tui_inferior_exit (struct inferior *inf)
{
- tuiShowFrameInfo (0);
+ /* Leave the SingleKey mode to make sure the gdb prompt is visible. */
+ tui_set_key_mode (TUI_COMMAND_MODE);
+ tui_show_frame_info (0);
tui_display_main ();
}
+/* Observers created when installing TUI hooks. */
+static struct observer *tui_bp_created_observer;
+static struct observer *tui_bp_deleted_observer;
+static struct observer *tui_bp_modified_observer;
+static struct observer *tui_inferior_exit_observer;
+static struct observer *tui_about_to_proceed_observer;
+
/* Install the TUI specific hooks. */
void
tui_install_hooks (void)
{
- target_wait_hook = tui_target_wait_hook;
- selected_frame_level_changed_hook = tui_selected_frame_level_changed_hook;
- print_frame_info_listing_hook = tui_print_frame_info_listing_hook;
+ deprecated_selected_frame_level_changed_hook
+ = tui_selected_frame_level_changed_hook;
+ deprecated_print_frame_info_listing_hook
+ = tui_print_frame_info_listing_hook;
- query_hook = tui_query_hook;
+ deprecated_query_hook = tui_query_hook;
/* Install the event hooks. */
- tui_old_event_hooks = set_gdb_event_hooks (&tui_event_hooks);
-
- registers_changed_hook = tui_registers_changed_hook;
- register_changed_hook = tui_register_changed_hook;
- detach_hook = tui_detach_hook;
+ tui_bp_created_observer
+ = observer_attach_breakpoint_created (tui_event_create_breakpoint);
+ tui_bp_deleted_observer
+ = observer_attach_breakpoint_deleted (tui_event_delete_breakpoint);
+ tui_bp_modified_observer
+ = observer_attach_breakpoint_modified (tui_event_modify_breakpoint);
+ tui_inferior_exit_observer
+ = observer_attach_inferior_exit (tui_inferior_exit);
+ tui_about_to_proceed_observer
+ = observer_attach_about_to_proceed (tui_about_to_proceed);
+
+ deprecated_register_changed_hook = tui_register_changed_hook;
}
/* Remove the TUI specific hooks. */
void
tui_remove_hooks (void)
{
- target_wait_hook = 0;
- selected_frame_level_changed_hook = 0;
- print_frame_info_listing_hook = 0;
- query_hook = 0;
- registers_changed_hook = 0;
- register_changed_hook = 0;
- detach_hook = 0;
-
- /* Restore the previous event hooks. */
- set_gdb_event_hooks (tui_old_event_hooks);
-}
-
-/* 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 ();
-}
-
-/* Initialize all the necessary variables, start the event loop,
- register readline, and stdin, start the loop. */
-static void
-tui_command_loop (void)
-{
- 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);
-
- /* Now it's time to start the event loop. */
- tui_event_loop ();
+ deprecated_selected_frame_level_changed_hook = 0;
+ deprecated_print_frame_info_listing_hook = 0;
+ deprecated_query_hook = 0;
+ deprecated_register_changed_hook = 0;
+
+ /* Remove our observers. */
+ observer_detach_breakpoint_created (tui_bp_created_observer);
+ tui_bp_created_observer = NULL;
+ observer_detach_breakpoint_deleted (tui_bp_deleted_observer);
+ tui_bp_deleted_observer = NULL;
+ observer_detach_breakpoint_modified (tui_bp_modified_observer);
+ tui_bp_modified_observer = NULL;
+ observer_detach_inferior_exit (tui_inferior_exit_observer);
+ tui_inferior_exit_observer = NULL;
+ observer_detach_about_to_proceed (tui_about_to_proceed_observer);
+ tui_about_to_proceed_observer = NULL;
}
-/* Start up the event loop. This is the entry point to the event loop
- from the command loop. */
+void _initialize_tui_hooks (void);
-static void
-tui_event_loop (void)
-{
- /* 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;
-}
-
-/* Initialize the tui by installing several gdb hooks, initializing
- the tui IO and preparing the readline with the kind binding. */
-static void
-tui_init_hook (char *argv0)
-{
- /* Don't enable the TUI if a specific interpreter is installed. */
- if (interpreter_p)
- return;
-
- /* Install exit handler to leave the screen in a good shape. */
- atexit (tui_exit);
-
- initializeStaticData ();
-
- /* Install the permanent hooks. */
- tui_target_new_objfile_chain = target_new_objfile_hook;
- target_new_objfile_hook = tui_new_objfile_hook;
-
- tui_initialize_io ();
- tui_initialize_readline ();
-
- /* Tell gdb to use the tui_command_loop as the main loop. */
- command_loop_hook = tui_command_loop;
-
- /* Decide in which mode to start using GDB (based on -tui). */
- if (tui_version)
- {
- tui_enable ();
- }
-}
-
-/* Initialize the tui. */
void
-_initialize_tui (void)
+_initialize_tui_hooks (void)
{
- /* Setup initialization hook. */
- init_ui_hook = tui_init_hook;
+ /* Install the permanent hooks. */
+ observer_attach_new_objfile (tui_new_objfile_hook);
}
-
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