binutils-gdb/gdb/tui/tui.c

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/* General functions for the WDB TUI.
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Copyright 1998, 1999, 2000, 2001, 2002 Free Software Foundation,
Inc.
Contributed by Hewlett-Packard Company.
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
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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. */
2002-03-01 07:19:28 +01:00
/* 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
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <malloc.h>
#ifdef HAVE_TERM_H
#include <term.h>
#endif
#include <signal.h>
#include <fcntl.h>
#include <termio.h>
#include <setjmp.h>
#include "defs.h"
#include "gdbcmd.h"
#include "tui.h"
#include "tuiData.h"
#include "tuiLayout.h"
#include "tuiIO.h"
#include "tuiRegs.h"
#include "tuiStack.h"
#include "tuiWin.h"
#include "tuiSourceWin.h"
#include "readline/readline.h"
#include "target.h"
#include "frame.h"
#include "breakpoint.h"
#include "inferior.h"
/* Tells whether the TUI is active or not. */
int tui_active = 0;
static int tui_finish_init = 1;
/* Switch the output mode between TUI/standard gdb. */
static int
tui_switch_mode (void)
{
if (tui_active)
{
tui_disable ();
rl_prep_terminal (0);
printf_filtered ("Left the TUI mode\n");
}
else
{
rl_deprep_terminal ();
tui_enable ();
printf_filtered ("Entered the TUI mode\n");
}
/* Clear the readline in case switching occurred in middle of something. */
if (rl_end)
rl_kill_text (0, rl_end);
/* Since we left the curses mode, the terminal mode is restored to
some previous state. That state may not be suitable for readline
to work correctly (it may be restored in line mode). We force an
exit of the current readline so that readline is re-entered and it
will be able to setup the terminal for its needs. By re-entering
in readline, we also redisplay its prompt in the non-curses mode. */
rl_newline (1, '\n');
/* Make sure the \n we are returning does not repeat the last command. */
dont_repeat ();
return 0;
}
/* Change the TUI layout to show a next layout.
This function is bound to CTRL-X 2. It is intended to provide
a functionality close to the Emacs split-window command. We always
show two windows (src+asm), (src+regs) or (asm+regs). */
static int
tui_change_windows (void)
{
if (!tui_active)
tui_switch_mode ();
if (tui_active)
{
TuiLayoutType new_layout;
TuiRegisterDisplayType regs_type = TUI_UNDEFINED_REGS;
new_layout = currentLayout ();
/* Select a new layout to have a rolling layout behavior
with always two windows (except when undefined). */
switch (new_layout)
{
case SRC_COMMAND:
new_layout = SRC_DISASSEM_COMMAND;
break;
case DISASSEM_COMMAND:
new_layout = SRC_DISASSEM_COMMAND;
break;
case SRC_DATA_COMMAND:
new_layout = SRC_DISASSEM_COMMAND;
break;
case SRC_DISASSEM_COMMAND:
new_layout = DISASSEM_DATA_COMMAND;
break;
case DISASSEM_DATA_COMMAND:
new_layout = SRC_DATA_COMMAND;
break;
default:
new_layout = SRC_COMMAND;
break;
}
tuiSetLayout (new_layout, regs_type);
}
return 0;
}
/* Delete the second TUI window to only show one. */
static int
tui_delete_other_windows (void)
{
if (!tui_active)
tui_switch_mode ();
if (tui_active)
{
TuiLayoutType new_layout;
TuiRegisterDisplayType regs_type = TUI_UNDEFINED_REGS;
new_layout = currentLayout ();
/* Kill one window. */
switch (new_layout)
{
case SRC_COMMAND:
case SRC_DATA_COMMAND:
case SRC_DISASSEM_COMMAND:
default:
new_layout = SRC_COMMAND;
break;
case DISASSEM_COMMAND:
case DISASSEM_DATA_COMMAND:
new_layout = DISASSEM_COMMAND;
break;
}
tuiSetLayout (new_layout, regs_type);
}
return 0;
}
/* Initialize readline and configure the keymap for the switching
key shortcut. */
void
tui_initialize_readline ()
{
rl_initialize ();
rl_add_defun ("tui-switch-mode", tui_switch_mode, -1);
rl_bind_key_in_map ('a', tui_switch_mode, emacs_ctlx_keymap);
rl_bind_key_in_map ('A', tui_switch_mode, emacs_ctlx_keymap);
rl_bind_key_in_map (CTRL ('A'), tui_switch_mode, emacs_ctlx_keymap);
rl_bind_key_in_map ('1', tui_delete_other_windows, emacs_ctlx_keymap);
rl_bind_key_in_map ('2', tui_change_windows, emacs_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 ();
tuiSetLocatorContent (0);
showLayout (SRC_COMMAND);
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 ();
tui_update_variables ();
tui_setup_io (1);
tui_version = 1;
tui_active = 1;
refresh ();
}
/* 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;
/* Remove TUI hooks. */
tui_remove_hooks ();
/* 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);
tui_version = 0;
tui_active = 0;
}
/* Wrapper on top of free() to ensure that input address
is greater than 0x0. */
void
tuiFree (char *ptr)
{
if (ptr != (char *) NULL)
{
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xfree (ptr);
}
}
/* Determine what the low address will be to display in the TUI's
disassembly window. This may or may not be the same as the
low address input. */
CORE_ADDR
tuiGetLowDisassemblyAddress (CORE_ADDR low, CORE_ADDR pc)
{
int line;
CORE_ADDR newLow;
/* Determine where to start the disassembly so that the pc is about in the
middle of the viewport. */
for (line = 0, newLow = pc;
(newLow > low &&
line < (tuiDefaultWinViewportHeight (DISASSEM_WIN,
DISASSEM_COMMAND) / 2));)
{
bfd_byte buffer[4];
newLow -= sizeof (bfd_getb32 (buffer));
line++;
}
return newLow;
}
void
strcat_to_buf (char *buf, int buflen, 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;
/*
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** 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;
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#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);
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#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)
{
/* make sure that the source window is displayed */
tuiAddWinToLayout (SRC_WIN);
tuiUpdateSourceWindowsWithLine (current_source_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_version == 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_version || !m_winPtrNotNull (cmdWin))
{
return 0;
}
*width = cmdWin->generic.width;
*height = cmdWin->generic.height;
return 1;
}