688 lines
18 KiB
C
688 lines
18 KiB
C
/* General functions for the WDB TUI.
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Copyright (C) 1998-2020 Free Software Foundation, Inc.
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Contributed by Hewlett-Packard Company.
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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 "gdbcmd.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-command.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-stack.h"
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#include "tui/tui-win.h"
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#include "tui/tui-winsource.h"
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#include "tui/tui-source.h"
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#include "target.h"
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#include "frame.h"
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#include "breakpoint.h"
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#include "inferior.h"
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#include "symtab.h"
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#include "source.h"
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#include "terminal.h"
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#include "top.h"
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#include <ctype.h>
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#include <signal.h>
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#include <fcntl.h>
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#if 0
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#include <termio.h>
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#endif
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#include <setjmp.h>
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#include "gdb_curses.h"
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#include "interps.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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/* Tells whether the TUI is active or not. */
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int tui_active = 0;
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static int tui_finish_init = 1;
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enum tui_key_mode tui_current_key_mode = TUI_COMMAND_MODE;
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struct tui_char_command
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{
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unsigned char key;
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const char *cmd;
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};
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/* Key mapping to gdb commands when the TUI is using the single key
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mode. */
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static const struct tui_char_command tui_commands[] = {
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{ 'c', "continue" },
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{ 'd', "down" },
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{ 'f', "finish" },
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{ 'n', "next" },
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{ 'o', "nexti" },
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{ 'r', "run" },
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{ 's', "step" },
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{ 'i', "stepi" },
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{ 'u', "up" },
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{ 'v', "info locals" },
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{ 'w', "where" },
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{ 0, 0 },
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};
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static Keymap tui_keymap;
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static Keymap tui_readline_standard_keymap;
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/* TUI readline command.
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Switch the output mode between TUI/standard gdb. */
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static int
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tui_rl_switch_mode (int notused1, int notused2)
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{
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/* Don't let exceptions escape. We're in the middle of a readline
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callback that isn't prepared for that. */
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try
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{
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if (tui_active)
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{
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tui_disable ();
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rl_prep_terminal (0);
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}
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else
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{
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/* If tui_enable throws, we'll re-prep below. */
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rl_deprep_terminal ();
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tui_enable ();
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}
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}
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catch (const gdb_exception &ex)
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{
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exception_print (gdb_stderr, ex);
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if (!tui_active)
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rl_prep_terminal (0);
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}
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/* Clear the readline in case switching occurred in middle of
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something. */
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if (rl_end)
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rl_kill_text (0, rl_end);
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/* Since we left the curses mode, the terminal mode is restored to
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some previous state. That state may not be suitable for readline
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to work correctly (it may be restored in line mode). We force an
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exit of the current readline so that readline is re-entered and
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it will be able to setup the terminal for its needs. By
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re-entering in readline, we also redisplay its prompt in the
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non-curses mode. */
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rl_newline (1, '\n');
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/* Make sure the \n we are returning does not repeat the last
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command. */
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dont_repeat ();
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return 0;
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}
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/* TUI readline command.
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Change the TUI layout to show a next layout.
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This function is bound to CTRL-X 2. It is intended to provide
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a functionality close to the Emacs split-window command. We
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always show two windows (src+asm), (src+regs) or (asm+regs). */
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static int
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tui_rl_change_windows (int notused1, int notused2)
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{
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if (!tui_active)
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tui_rl_switch_mode (0 /* notused */, 0 /* notused */);
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if (tui_active)
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{
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enum tui_layout_type new_layout;
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new_layout = tui_current_layout ();
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/* Select a new layout to have a rolling layout behavior with
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always two windows (except when undefined). */
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switch (new_layout)
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{
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case SRC_COMMAND:
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new_layout = SRC_DISASSEM_COMMAND;
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break;
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case DISASSEM_COMMAND:
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new_layout = SRC_DISASSEM_COMMAND;
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break;
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case SRC_DATA_COMMAND:
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new_layout = SRC_DISASSEM_COMMAND;
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break;
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case SRC_DISASSEM_COMMAND:
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new_layout = DISASSEM_DATA_COMMAND;
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break;
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case DISASSEM_DATA_COMMAND:
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new_layout = SRC_DATA_COMMAND;
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break;
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default:
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new_layout = SRC_COMMAND;
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break;
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}
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tui_set_layout (new_layout);
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}
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return 0;
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}
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/* TUI readline command.
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Delete the second TUI window to only show one. */
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static int
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tui_rl_delete_other_windows (int notused1, int notused2)
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{
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if (!tui_active)
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tui_rl_switch_mode (0 /* notused */, 0 /* notused */);
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if (tui_active)
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{
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enum tui_layout_type new_layout;
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new_layout = tui_current_layout ();
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/* Kill one window. */
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switch (new_layout)
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{
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case SRC_COMMAND:
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case SRC_DATA_COMMAND:
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case SRC_DISASSEM_COMMAND:
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default:
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new_layout = SRC_COMMAND;
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break;
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case DISASSEM_COMMAND:
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case DISASSEM_DATA_COMMAND:
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new_layout = DISASSEM_COMMAND;
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break;
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}
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tui_set_layout (new_layout);
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}
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return 0;
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}
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/* TUI readline command.
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Switch the active window to give the focus to a next window. */
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static int
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tui_rl_other_window (int count, int key)
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{
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struct tui_win_info *win_info;
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if (!tui_active)
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tui_rl_switch_mode (0 /* notused */, 0 /* notused */);
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win_info = tui_next_win (tui_win_with_focus ());
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if (win_info)
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{
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tui_set_win_focus_to (win_info);
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keypad (TUI_CMD_WIN->handle.get (), win_info != TUI_CMD_WIN);
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}
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return 0;
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}
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/* TUI readline command.
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Execute the gdb command bound to the specified key. */
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static int
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tui_rl_command_key (int count, int key)
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{
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int i;
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reinitialize_more_filter ();
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for (i = 0; tui_commands[i].cmd; i++)
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{
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if (tui_commands[i].key == key)
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{
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/* Insert the command in the readline buffer.
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Avoid calling the gdb command here since it creates
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a possible recursion on readline if prompt_for_continue
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is called (See PR 9584). The command will also appear
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in the readline history which turns out to be better. */
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rl_insert_text (tui_commands[i].cmd);
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rl_newline (1, '\n');
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/* Switch to gdb command mode while executing the command.
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This way the gdb's continue prompty will be displayed. */
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tui_set_key_mode (TUI_ONE_COMMAND_MODE);
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return 0;
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}
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}
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return 0;
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}
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/* TUI readline command.
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Temporarily leave the TUI SingleKey mode to allow editing
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a gdb command with the normal readline. Once the command
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is executed, the TUI SingleKey mode is installed back. */
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static int
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tui_rl_command_mode (int count, int key)
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{
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tui_set_key_mode (TUI_ONE_COMMAND_MODE);
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return rl_insert (count, key);
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}
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/* TUI readline command.
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Switch between TUI SingleKey mode and gdb readline editing. */
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static int
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tui_rl_next_keymap (int notused1, int notused2)
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{
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if (!tui_active)
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tui_rl_switch_mode (0 /* notused */, 0 /* notused */);
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tui_set_key_mode (tui_current_key_mode == TUI_COMMAND_MODE
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? TUI_SINGLE_KEY_MODE : TUI_COMMAND_MODE);
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return 0;
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}
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/* Readline hook to redisplay ourself the gdb prompt.
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In the SingleKey mode, the prompt is not printed so that
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the command window is cleaner. It will be displayed if
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we temporarily leave the SingleKey mode. */
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static int
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tui_rl_startup_hook (void)
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{
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rl_already_prompted = 1;
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if (tui_current_key_mode != TUI_COMMAND_MODE
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&& !gdb_in_secondary_prompt_p (current_ui))
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tui_set_key_mode (TUI_SINGLE_KEY_MODE);
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tui_redisplay_readline ();
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return 0;
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}
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/* Change the TUI key mode by installing the appropriate readline
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keymap. */
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void
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tui_set_key_mode (enum tui_key_mode mode)
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{
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tui_current_key_mode = mode;
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rl_set_keymap (mode == TUI_SINGLE_KEY_MODE
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? tui_keymap : tui_readline_standard_keymap);
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tui_show_locator_content ();
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}
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/* Initialize readline and configure the keymap for the switching
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key shortcut. */
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void
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tui_initialize_readline (void)
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{
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int i;
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Keymap tui_ctlx_keymap;
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rl_add_defun ("tui-switch-mode", tui_rl_switch_mode, -1);
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rl_add_defun ("next-keymap", tui_rl_next_keymap, -1);
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rl_add_defun ("tui-delete-other-windows", tui_rl_delete_other_windows, -1);
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rl_add_defun ("tui-change-windows", tui_rl_change_windows, -1);
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rl_add_defun ("tui-other-window", tui_rl_other_window, -1);
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tui_keymap = rl_make_bare_keymap ();
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/* The named keymap feature was added in Readline 8.0. */
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#if RL_READLINE_VERSION >= 0x800
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rl_set_keymap_name ("SingleKey", tui_keymap);
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#endif
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tui_ctlx_keymap = rl_make_bare_keymap ();
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tui_readline_standard_keymap = rl_get_keymap ();
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for (i = 0; tui_commands[i].cmd; i++)
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rl_bind_key_in_map (tui_commands[i].key, tui_rl_command_key, tui_keymap);
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rl_generic_bind (ISKMAP, "\\C-x", (char*) tui_ctlx_keymap, tui_keymap);
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/* Bind all other keys to tui_rl_command_mode so that we switch
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temporarily from SingleKey mode and can enter a gdb command. */
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for (i = ' '; i < 0x7f; i++)
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{
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int j;
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for (j = 0; tui_commands[j].cmd; j++)
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if (tui_commands[j].key == i)
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break;
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if (tui_commands[j].cmd)
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continue;
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rl_bind_key_in_map (i, tui_rl_command_mode, tui_keymap);
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}
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rl_bind_key_in_map ('a', tui_rl_switch_mode, emacs_ctlx_keymap);
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rl_bind_key_in_map ('a', tui_rl_switch_mode, tui_ctlx_keymap);
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rl_bind_key_in_map ('A', tui_rl_switch_mode, emacs_ctlx_keymap);
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rl_bind_key_in_map ('A', tui_rl_switch_mode, tui_ctlx_keymap);
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rl_bind_key_in_map (CTRL ('A'), tui_rl_switch_mode, emacs_ctlx_keymap);
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rl_bind_key_in_map (CTRL ('A'), tui_rl_switch_mode, tui_ctlx_keymap);
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rl_bind_key_in_map ('1', tui_rl_delete_other_windows, emacs_ctlx_keymap);
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rl_bind_key_in_map ('1', tui_rl_delete_other_windows, tui_ctlx_keymap);
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rl_bind_key_in_map ('2', tui_rl_change_windows, emacs_ctlx_keymap);
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rl_bind_key_in_map ('2', tui_rl_change_windows, tui_ctlx_keymap);
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rl_bind_key_in_map ('o', tui_rl_other_window, emacs_ctlx_keymap);
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rl_bind_key_in_map ('o', tui_rl_other_window, tui_ctlx_keymap);
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rl_bind_key_in_map ('q', tui_rl_next_keymap, tui_keymap);
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rl_bind_key_in_map ('s', tui_rl_next_keymap, emacs_ctlx_keymap);
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rl_bind_key_in_map ('s', tui_rl_next_keymap, tui_ctlx_keymap);
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}
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/* Return the TERM variable from the environment, or "<unset>"
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if not set. */
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static const char *
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gdb_getenv_term (void)
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{
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const char *term;
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term = getenv ("TERM");
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if (term != NULL)
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return term;
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return "<unset>";
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}
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/* Enter in the tui mode (curses).
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When in normal mode, it installs the tui hooks in gdb, redirects
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the gdb output, configures the readline to work in tui mode.
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When in curses mode, it does nothing. */
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void
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tui_enable (void)
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{
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if (tui_active)
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return;
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/* To avoid to initialize curses when gdb starts, there is a deferred
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curses initialization. This initialization is made only once
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and the first time the curses mode is entered. */
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if (tui_finish_init)
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{
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WINDOW *w;
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SCREEN *s;
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#ifndef __MINGW32__
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const char *cap;
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#endif
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const char *interp;
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/* If the top level interpreter is not the console/tui (e.g.,
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MI), enabling curses will certainly lose. */
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interp = top_level_interpreter ()->name ();
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if (strcmp (interp, INTERP_TUI) != 0)
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error (_("Cannot enable the TUI when the interpreter is '%s'"), interp);
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/* Don't try to setup curses (and print funny control
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characters) if we're not outputting to a terminal. */
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if (!ui_file_isatty (gdb_stdout))
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error (_("Cannot enable the TUI when output is not a terminal"));
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s = newterm (NULL, stdout, stdin);
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#ifdef __MINGW32__
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/* The MinGW port of ncurses requires $TERM to be unset in order
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to activate the Windows console driver. */
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if (s == NULL)
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s = newterm ((char *) "unknown", stdout, stdin);
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#endif
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if (s == NULL)
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{
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error (_("Cannot enable the TUI: error opening terminal [TERM=%s]"),
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gdb_getenv_term ());
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}
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w = stdscr;
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if (has_colors ())
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{
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#ifdef HAVE_USE_DEFAULT_COLORS
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/* Ncurses extension to help with resetting to the default
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color. */
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use_default_colors ();
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#endif
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start_color ();
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}
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/* Check required terminal capabilities. The MinGW port of
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ncurses does have them, but doesn't expose them through "cup". */
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#ifndef __MINGW32__
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cap = tigetstr ((char *) "cup");
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if (cap == NULL || cap == (char *) -1 || *cap == '\0')
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{
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endwin ();
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delscreen (s);
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error (_("Cannot enable the TUI: "
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"terminal doesn't support cursor addressing [TERM=%s]"),
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gdb_getenv_term ());
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}
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#endif
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cbreak ();
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noecho ();
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/* timeout (1); */
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nodelay(w, FALSE);
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nl();
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keypad (w, TRUE);
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tui_set_term_height_to (LINES);
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tui_set_term_width_to (COLS);
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def_prog_mode ();
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tui_show_frame_info (0);
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tui_set_layout (SRC_COMMAND);
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tui_set_win_focus_to (TUI_SRC_WIN);
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keypad (TUI_CMD_WIN->handle.get (), TRUE);
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wrefresh (TUI_CMD_WIN->handle.get ());
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tui_finish_init = 0;
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}
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else
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{
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/* Save the current gdb setting of the terminal.
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Curses will restore this state when endwin() is called. */
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def_shell_mode ();
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clearok (stdscr, TRUE);
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}
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/* Install the TUI specific hooks. */
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tui_install_hooks ();
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rl_startup_hook = tui_rl_startup_hook;
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if (tui_update_variables ())
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tui_rehighlight_all ();
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tui_setup_io (1);
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tui_active = 1;
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|
|
|
/* Resize windows before anything might display/refresh a
|
|
window. */
|
|
if (tui_win_resized ())
|
|
{
|
|
tui_set_win_resized_to (false);
|
|
tui_resize_all ();
|
|
}
|
|
|
|
if (deprecated_safe_get_selected_frame ())
|
|
tui_show_frame_info (deprecated_safe_get_selected_frame ());
|
|
|
|
/* Restore TUI keymap. */
|
|
tui_set_key_mode (tui_current_key_mode);
|
|
|
|
/* Refresh the screen. */
|
|
tui_refresh_all_win ();
|
|
|
|
/* Update gdb's knowledge of its terminal. */
|
|
gdb_save_tty_state ();
|
|
tui_update_gdb_sizes ();
|
|
}
|
|
|
|
/* Leave the tui mode.
|
|
Remove the tui hooks and configure the gdb output and readline
|
|
back to their original state. The curses mode is left so that
|
|
the terminal setting is restored to the point when we entered. */
|
|
void
|
|
tui_disable (void)
|
|
{
|
|
if (!tui_active)
|
|
return;
|
|
|
|
/* Restore initial readline keymap. */
|
|
rl_set_keymap (tui_readline_standard_keymap);
|
|
|
|
/* Remove TUI hooks. */
|
|
tui_remove_hooks ();
|
|
rl_startup_hook = 0;
|
|
rl_already_prompted = 0;
|
|
|
|
/* Leave curses and restore previous gdb terminal setting. */
|
|
endwin ();
|
|
|
|
/* gdb terminal has changed, update gdb internal copy of it
|
|
so that terminal management with the inferior works. */
|
|
tui_setup_io (0);
|
|
|
|
/* Update gdb's knowledge of its terminal. */
|
|
gdb_save_tty_state ();
|
|
|
|
tui_active = 0;
|
|
tui_update_gdb_sizes ();
|
|
}
|
|
|
|
/* Command wrapper for enabling tui mode. */
|
|
|
|
static void
|
|
tui_enable_command (const char *args, int from_tty)
|
|
{
|
|
tui_enable ();
|
|
}
|
|
|
|
/* Command wrapper for leaving tui mode. */
|
|
|
|
static void
|
|
tui_disable_command (const char *args, int from_tty)
|
|
{
|
|
tui_disable ();
|
|
}
|
|
|
|
#if 0
|
|
/* Solaris <sys/termios.h> defines CTRL. */
|
|
#ifndef CTRL
|
|
#define CTRL(x) (x & ~0140)
|
|
#endif
|
|
|
|
#define FILEDES 2
|
|
#define CHK(val, dft) (val<=0 ? dft : val)
|
|
|
|
static void
|
|
tui_reset (void)
|
|
{
|
|
struct termio mode;
|
|
|
|
/* Reset the teletype mode bits to a sensible state.
|
|
Copied tset.c. */
|
|
#if defined (TIOCGETC)
|
|
struct tchars tbuf;
|
|
#endif /* TIOCGETC */
|
|
#ifdef UCB_NTTY
|
|
struct ltchars ltc;
|
|
|
|
if (ldisc == NTTYDISC)
|
|
{
|
|
ioctl (FILEDES, TIOCGLTC, <c);
|
|
ltc.t_suspc = CHK (ltc.t_suspc, CTRL ('Z'));
|
|
ltc.t_dsuspc = CHK (ltc.t_dsuspc, CTRL ('Y'));
|
|
ltc.t_rprntc = CHK (ltc.t_rprntc, CTRL ('R'));
|
|
ltc.t_flushc = CHK (ltc.t_flushc, CTRL ('O'));
|
|
ltc.t_werasc = CHK (ltc.t_werasc, CTRL ('W'));
|
|
ltc.t_lnextc = CHK (ltc.t_lnextc, CTRL ('V'));
|
|
ioctl (FILEDES, TIOCSLTC, <c);
|
|
}
|
|
#endif /* UCB_NTTY */
|
|
#ifdef TIOCGETC
|
|
ioctl (FILEDES, TIOCGETC, &tbuf);
|
|
tbuf.t_intrc = CHK (tbuf.t_intrc, CTRL ('?'));
|
|
tbuf.t_quitc = CHK (tbuf.t_quitc, CTRL ('\\'));
|
|
tbuf.t_startc = CHK (tbuf.t_startc, CTRL ('Q'));
|
|
tbuf.t_stopc = CHK (tbuf.t_stopc, CTRL ('S'));
|
|
tbuf.t_eofc = CHK (tbuf.t_eofc, CTRL ('D'));
|
|
/* brkc is left alone. */
|
|
ioctl (FILEDES, TIOCSETC, &tbuf);
|
|
#endif /* TIOCGETC */
|
|
mode.sg_flags &= ~(RAW
|
|
#ifdef CBREAK
|
|
| CBREAK
|
|
#endif /* CBREAK */
|
|
| VTDELAY | ALLDELAY);
|
|
mode.sg_flags |= XTABS | ECHO | CRMOD | ANYP;
|
|
}
|
|
#endif
|
|
|
|
void
|
|
tui_show_source (const char *fullname, int line)
|
|
{
|
|
struct symtab_and_line cursal = get_current_source_symtab_and_line ();
|
|
|
|
/* Make sure that the source window is displayed. */
|
|
tui_add_win_to_layout (SRC_WIN);
|
|
|
|
tui_update_source_windows_with_line (cursal.symtab, line);
|
|
tui_update_locator_fullname (fullname);
|
|
}
|
|
|
|
void
|
|
tui_show_assembly (struct gdbarch *gdbarch, CORE_ADDR addr)
|
|
{
|
|
tui_add_win_to_layout (DISASSEM_WIN);
|
|
tui_update_source_windows_with_addr (gdbarch, addr);
|
|
}
|
|
|
|
bool
|
|
tui_is_window_visible (enum tui_win_type type)
|
|
{
|
|
if (tui_active == 0)
|
|
return false;
|
|
|
|
if (tui_win_list[type] == 0)
|
|
return false;
|
|
|
|
return tui_win_list[type]->is_visible ();
|
|
}
|
|
|
|
int
|
|
tui_get_command_dimension (unsigned int *width,
|
|
unsigned int *height)
|
|
{
|
|
if (!tui_active || (TUI_CMD_WIN == NULL))
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
*width = TUI_CMD_WIN->width;
|
|
*height = TUI_CMD_WIN->height;
|
|
return 1;
|
|
}
|
|
|
|
void
|
|
_initialize_tui (void)
|
|
{
|
|
struct cmd_list_element **tuicmd;
|
|
|
|
tuicmd = tui_get_cmd_list ();
|
|
|
|
add_cmd ("enable", class_tui, tui_enable_command,
|
|
_("Enable TUI display mode."),
|
|
tuicmd);
|
|
add_cmd ("disable", class_tui, tui_disable_command,
|
|
_("Disable TUI display mode."),
|
|
tuicmd);
|
|
}
|