312 lines
8 KiB
C
312 lines
8 KiB
C
/* GDB hooks for TUI.
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Copyright (C) 2001-2014 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "symtab.h"
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#include "inferior.h"
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#include "command.h"
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#include "bfd.h"
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#include "symfile.h"
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#include "objfiles.h"
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#include "target.h"
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#include "gdbcore.h"
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#include "event-loop.h"
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#include "event-top.h"
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#include "frame.h"
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#include "breakpoint.h"
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#include "ui-out.h"
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#include "top.h"
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#include "observer.h"
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#include <unistd.h>
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#include <fcntl.h>
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#include "tui/tui.h"
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#include "tui/tui-hooks.h"
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#include "tui/tui-data.h"
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#include "tui/tui-layout.h"
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#include "tui/tui-io.h"
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#include "tui/tui-regs.h"
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#include "tui/tui-win.h"
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#include "tui/tui-stack.h"
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#include "tui/tui-windata.h"
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#include "tui/tui-winsource.h"
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#include "gdb_curses.h"
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/* This redefines CTRL if it is not already defined, so it must come
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after terminal state releated include files like <term.h> and
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"gdb_curses.h". */
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#include "readline/readline.h"
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int tui_target_has_run = 0;
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static void
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tui_new_objfile_hook (struct objfile* objfile)
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{
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if (tui_active)
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tui_display_main ();
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}
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static int ATTRIBUTE_PRINTF (1, 0)
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tui_query_hook (const char *msg, va_list argp)
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{
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int retval;
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int ans2;
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int answer;
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char *question;
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struct cleanup *old_chain;
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/* Format the question outside of the loop, to avoid reusing
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ARGP. */
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question = xstrvprintf (msg, argp);
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old_chain = make_cleanup (xfree, question);
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echo ();
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while (1)
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{
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wrap_here (""); /* Flush any buffered output. */
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gdb_flush (gdb_stdout);
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fputs_filtered (question, gdb_stdout);
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printf_filtered (_("(y or n) "));
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wrap_here ("");
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gdb_flush (gdb_stdout);
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answer = tui_getc (stdin);
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clearerr (stdin); /* in case of C-d */
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if (answer == EOF) /* C-d */
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{
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retval = 1;
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break;
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}
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/* Eat rest of input line, to EOF or newline. */
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if (answer != '\n')
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do
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{
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ans2 = tui_getc (stdin);
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clearerr (stdin);
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}
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while (ans2 != EOF && ans2 != '\n' && ans2 != '\r');
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if (answer >= 'a')
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answer -= 040;
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if (answer == 'Y')
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{
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retval = 1;
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break;
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}
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if (answer == 'N')
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{
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retval = 0;
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break;
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}
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printf_filtered (_("Please answer y or n.\n"));
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}
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noecho ();
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do_cleanups (old_chain);
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return retval;
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}
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/* Prevent recursion of deprecated_register_changed_hook(). */
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static int tui_refreshing_registers = 0;
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static void
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tui_register_changed_hook (int regno)
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{
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struct frame_info *fi;
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fi = get_selected_frame (NULL);
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if (tui_refreshing_registers == 0)
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{
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tui_refreshing_registers = 1;
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tui_check_data_values (fi);
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tui_refreshing_registers = 0;
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}
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}
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/* Breakpoint creation hook.
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Update the screen to show the new breakpoint. */
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static void
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tui_event_create_breakpoint (struct breakpoint *b)
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{
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tui_update_all_breakpoint_info ();
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}
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/* Breakpoint deletion hook.
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Refresh the screen to update the breakpoint marks. */
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static void
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tui_event_delete_breakpoint (struct breakpoint *b)
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{
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tui_update_all_breakpoint_info ();
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}
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static void
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tui_event_modify_breakpoint (struct breakpoint *b)
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{
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tui_update_all_breakpoint_info ();
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}
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/* Called when a command is about to proceed the inferior. */
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static void
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tui_about_to_proceed (void)
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{
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/* Leave tui mode (optional). */
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#if 0
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if (tui_active)
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{
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target_terminal_ours ();
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endwin ();
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target_terminal_inferior ();
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}
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#endif
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tui_target_has_run = 1;
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}
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/* The selected frame has changed. This is happens after a target
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stop or when the user explicitly changes the frame
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(up/down/thread/...). */
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static void
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tui_selected_frame_level_changed_hook (int level)
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{
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struct frame_info *fi;
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CORE_ADDR pc;
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/* Negative level means that the selected frame was cleared. */
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if (level < 0)
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return;
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fi = get_selected_frame (NULL);
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/* Ensure that symbols for this frame are read in. Also, determine
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the source language of this frame, and switch to it if
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desired. */
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if (get_frame_pc_if_available (fi, &pc))
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{
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struct symtab *s;
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s = find_pc_symtab (pc);
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/* elz: This if here fixes the problem with the pc not being
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displayed in the tui asm layout, with no debug symbols. The
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value of s would be 0 here, and select_source_symtab would
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abort the command by calling the 'error' function. */
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if (s)
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select_source_symtab (s);
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}
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/* Display the frame position (even if there is no symbols or the PC
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is not known). */
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tui_show_frame_info (fi);
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/* Refresh the register window if it's visible. */
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if (tui_is_window_visible (DATA_WIN))
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{
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tui_refreshing_registers = 1;
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tui_check_data_values (fi);
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tui_refreshing_registers = 0;
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}
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}
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/* Called from print_frame_info to list the line we stopped in. */
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static void
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tui_print_frame_info_listing_hook (struct symtab *s,
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int line,
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int stopline,
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int noerror)
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{
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select_source_symtab (s);
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tui_show_frame_info (get_selected_frame (NULL));
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}
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/* Perform all necessary cleanups regarding our module's inferior data
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that is required after the inferior INF just exited. */
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static void
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tui_inferior_exit (struct inferior *inf)
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{
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/* Leave the SingleKey mode to make sure the gdb prompt is visible. */
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tui_set_key_mode (TUI_COMMAND_MODE);
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tui_show_frame_info (0);
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tui_display_main ();
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}
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/* Observers created when installing TUI hooks. */
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static struct observer *tui_bp_created_observer;
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static struct observer *tui_bp_deleted_observer;
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static struct observer *tui_bp_modified_observer;
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static struct observer *tui_inferior_exit_observer;
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static struct observer *tui_about_to_proceed_observer;
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/* Install the TUI specific hooks. */
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void
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tui_install_hooks (void)
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{
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deprecated_selected_frame_level_changed_hook
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= tui_selected_frame_level_changed_hook;
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deprecated_print_frame_info_listing_hook
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= tui_print_frame_info_listing_hook;
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deprecated_query_hook = tui_query_hook;
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/* Install the event hooks. */
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tui_bp_created_observer
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= observer_attach_breakpoint_created (tui_event_create_breakpoint);
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tui_bp_deleted_observer
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= observer_attach_breakpoint_deleted (tui_event_delete_breakpoint);
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tui_bp_modified_observer
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= observer_attach_breakpoint_modified (tui_event_modify_breakpoint);
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tui_inferior_exit_observer
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= observer_attach_inferior_exit (tui_inferior_exit);
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tui_about_to_proceed_observer
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= observer_attach_about_to_proceed (tui_about_to_proceed);
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deprecated_register_changed_hook = tui_register_changed_hook;
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}
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/* Remove the TUI specific hooks. */
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void
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tui_remove_hooks (void)
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{
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deprecated_selected_frame_level_changed_hook = 0;
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deprecated_print_frame_info_listing_hook = 0;
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deprecated_query_hook = 0;
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deprecated_register_changed_hook = 0;
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/* Remove our observers. */
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observer_detach_breakpoint_created (tui_bp_created_observer);
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tui_bp_created_observer = NULL;
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observer_detach_breakpoint_deleted (tui_bp_deleted_observer);
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tui_bp_deleted_observer = NULL;
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observer_detach_breakpoint_modified (tui_bp_modified_observer);
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tui_bp_modified_observer = NULL;
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observer_detach_inferior_exit (tui_inferior_exit_observer);
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tui_inferior_exit_observer = NULL;
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observer_detach_about_to_proceed (tui_about_to_proceed_observer);
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tui_about_to_proceed_observer = NULL;
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}
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void _initialize_tui_hooks (void);
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void
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_initialize_tui_hooks (void)
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{
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/* Install the permanent hooks. */
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observer_attach_new_objfile (tui_new_objfile_hook);
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}
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