tui.c

gdb-6.0 linux 下的调试工具

}

/* Initialize readline and configure the keymap for the switching
   key shortcut.  */
void
tui_initialize_readline ()
{
  int i;
  Keymap tui_ctlx_keymap;

  rl_initialize ();

  rl_add_defun ("tui-switch-mode", tui_rl_switch_mode, -1);
  rl_add_defun ("gdb-command", tui_rl_command_key, -1);
  rl_add_defun ("next-keymap", tui_rl_next_keymap, -1);

  tui_keymap = rl_make_bare_keymap ();
  tui_ctlx_keymap = rl_make_bare_keymap ();
  tui_readline_standard_keymap = rl_get_keymap ();

  for (i = 0; tui_commands[i].cmd; i++)
    rl_bind_key_in_map (tui_commands[i].key, tui_rl_command_key, tui_keymap);

  rl_generic_bind (ISKMAP, "\\C-x", (char*) tui_ctlx_keymap, tui_keymap);

  /* Bind all other keys to tui_rl_command_mode so that we switch
     temporarily from SingleKey mode and can enter a gdb command.  */
  for (i = ' '; i < 0x7f; i++)
    {
      int j;

      for (j = 0; tui_commands[j].cmd; j++)
        if (tui_commands[j].key == i)
          break;

      if (tui_commands[j].cmd)
        continue;

      rl_bind_key_in_map (i, tui_rl_command_mode, tui_keymap);
    }

  rl_bind_key_in_map ('a', tui_rl_switch_mode, emacs_ctlx_keymap);
  rl_bind_key_in_map ('a', tui_rl_switch_mode, tui_ctlx_keymap);
  rl_bind_key_in_map ('A', tui_rl_switch_mode, emacs_ctlx_keymap);
  rl_bind_key_in_map ('A', tui_rl_switch_mode, tui_ctlx_keymap);
  rl_bind_key_in_map (CTRL ('A'), tui_rl_switch_mode, emacs_ctlx_keymap);
  rl_bind_key_in_map (CTRL ('A'), tui_rl_switch_mode, tui_ctlx_keymap);
  rl_bind_key_in_map ('1', tui_rl_delete_other_windows, emacs_ctlx_keymap);
  rl_bind_key_in_map ('1', tui_rl_delete_other_windows, tui_ctlx_keymap);
  rl_bind_key_in_map ('2', tui_rl_change_windows, emacs_ctlx_keymap);
  rl_bind_key_in_map ('2', tui_rl_change_windows, tui_ctlx_keymap);
  rl_bind_key_in_map ('o', tui_rl_other_window, emacs_ctlx_keymap);
  rl_bind_key_in_map ('o', tui_rl_other_window, tui_ctlx_keymap);
  rl_bind_key_in_map ('q', tui_rl_next_keymap, tui_keymap);
  rl_bind_key_in_map ('s', tui_rl_next_keymap, emacs_ctlx_keymap);
  rl_bind_key_in_map ('s', tui_rl_next_keymap, tui_ctlx_keymap);
}

/* Enter in the tui mode (curses).
   When in normal mode, it installs the tui hooks in gdb, redirects
   the gdb output, configures the readline to work in tui mode.
   When in curses mode, it does nothing.  */
void
tui_enable (void)
{
  if (tui_active)
    return;

  /* To avoid to initialize curses when gdb starts, there is a defered
     curses initialization.  This initialization is made only once
     and the first time the curses mode is entered.  */
  if (tui_finish_init)
    {
      WINDOW *w;

      w = initscr ();
  
      cbreak ();
      noecho ();
      /*timeout (1);*/
      nodelay(w, FALSE);
      nl();
      keypad (w, TRUE);
      rl_initialize ();
      setTermHeightTo (LINES);
      setTermWidthTo (COLS);
      def_prog_mode ();

      tuiShowFrameInfo (0);
      tuiSetLayout (SRC_COMMAND, TUI_UNDEFINED_REGS);
      tuiSetWinFocusTo (srcWin);
      keypad (cmdWin->generic.handle, TRUE);
      wrefresh (cmdWin->generic.handle);
      tui_finish_init = 0;
    }
  else
    {
     /* Save the current gdb setting of the terminal.
        Curses will restore this state when endwin() is called.  */
     def_shell_mode ();
     clearok (stdscr, TRUE);
   }

  /* Install the TUI specific hooks.  */
  tui_install_hooks ();
  rl_startup_hook = tui_rl_startup_hook;

  tui_update_variables ();
  
  tui_setup_io (1);

  tui_active = 1;
  if (deprecated_selected_frame)
     tuiShowFrameInfo (deprecated_selected_frame);

  /* Restore TUI keymap.  */
  tui_set_key_mode (tui_current_key_mode);
  tuiRefreshAll ();

  /* Update gdb's knowledge of its terminal.  */
  target_terminal_save_ours ();
  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.  */
  target_terminal_save_ours ();

  tui_active = 0;
  tui_update_gdb_sizes ();
}

/* Wrapper on top of free() to ensure that input address
   is greater than 0x0.  */
void
tuiFree (char *ptr)
{
  if (ptr != (char *) NULL)
    {
      xfree (ptr);
    }
}

void
strcat_to_buf (char *buf, int buflen, const char *itemToAdd)
{
  if (itemToAdd != (char *) NULL && buf != (char *) NULL)
    {
      if ((strlen (buf) + strlen (itemToAdd)) <= buflen)
	strcat (buf, itemToAdd);
      else
	strncat (buf, itemToAdd, (buflen - strlen (buf)));
    }
}

#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
_tuiReset (void)
{
  struct termio mode;

  /*
     ** reset the teletype mode bits to a sensible state.
     ** Copied tset.c
   */
#if ! defined (USG) && defined (TIOCGETC)
  struct tchars tbuf;
#endif /* !USG && TIOCGETC */
#ifdef UCB_NTTY
  struct ltchars ltc;

  if (ldisc == NTTYDISC)
    {
      ioctl (FILEDES, TIOCGLTC, &ltc);
      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, &ltc);
    }
#endif /* UCB_NTTY */
#ifndef USG
#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;
#else /*USG */
  ioctl (FILEDES, TCGETA, &mode);
  mode.c_cc[VINTR] = CHK (mode.c_cc[VINTR], CTRL ('?'));
  mode.c_cc[VQUIT] = CHK (mode.c_cc[VQUIT], CTRL ('\\'));
  mode.c_cc[VEOF] = CHK (mode.c_cc[VEOF], CTRL ('D'));

  mode.c_iflag &= ~(IGNBRK | PARMRK | INPCK | INLCR | IGNCR | IUCLC | IXOFF);
  mode.c_iflag |= (BRKINT | ISTRIP | ICRNL | IXON);
  mode.c_oflag &= ~(OLCUC | OCRNL | ONOCR | ONLRET | OFILL | OFDEL |
		    NLDLY | CRDLY | TABDLY | BSDLY | VTDLY | FFDLY);
  mode.c_oflag |= (OPOST | ONLCR);
  mode.c_cflag &= ~(CSIZE | PARODD | CLOCAL);
#ifndef hp9000s800
  mode.c_cflag |= (CS8 | CREAD);
#else /*hp9000s800 */
  mode.c_cflag |= (CS8 | CSTOPB | CREAD);
#endif /* hp9000s800 */
  mode.c_lflag &= ~(XCASE | ECHONL | NOFLSH);
  mode.c_lflag |= (ISIG | ICANON | ECHO | ECHOK);
  ioctl (FILEDES, TCSETAW, &mode);
#endif /* USG */

  return;
}				/* _tuiReset */
#endif

void
tui_show_source (const char *file, int line)
{
  struct symtab_and_line cursal = get_current_source_symtab_and_line ();
  /* make sure that the source window is displayed */
  tuiAddWinToLayout (SRC_WIN);

  tuiUpdateSourceWindowsWithLine (cursal.symtab, line);
  tuiUpdateLocatorFilename (file);
}

void
tui_show_assembly (CORE_ADDR addr)
{
  tuiAddWinToLayout (DISASSEM_WIN);
  tuiUpdateSourceWindowsWithAddr (addr);
}

int
tui_is_window_visible (TuiWinType type)
{
  if (tui_active == 0)
    return 0;

  if (winList[type] == 0)
    return 0;
  
  return winList[type]->generic.isVisible;
}

int
tui_get_command_dimension (int *width, int *height)
{
  if (!tui_active || !m_winPtrNotNull (cmdWin))
    {
      return 0;
    }
  
  *width = cmdWin->generic.width;
  *height = cmdWin->generic.height;
  return 1;
}