binutils-gdb/gdb/tui/tui-hooks.c

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/* GDB hooks for TUI.
2002-03-01 07:19:28 +01:00
Copyright 2001, 2002 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
(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 "defs.h"
#include "symtab.h"
#include "inferior.h"
#include "command.h"
#include "bfd.h"
#include "symfile.h"
#include "objfiles.h"
#include "target.h"
#include "gdbcore.h"
#include "event-loop.h"
#include "frame.h"
#include "breakpoint.h"
#include "gdb-events.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"
int tui_target_has_run = 0;
static void (* tui_target_new_objfile_chain) (struct objfile*);
extern void (*selected_frame_level_changed_hook) (int);
static void
tui_new_objfile_hook (struct objfile* objfile)
{
if (tui_active)
{
tuiDisplayMainFunction ();
}
if (tui_target_new_objfile_chain)
tui_target_new_objfile_chain (objfile);
}
static int
tui_query_hook (const char * msg, va_list argp)
{
int retval;
int ans2;
int answer;
/* Automatically answer "yes" if input is not from a terminal. */
if (!input_from_terminal_p ())
return 1;
echo ();
while (1)
{
wrap_here (""); /* Flush any buffered output */
gdb_flush (gdb_stdout);
vfprintf_filtered (gdb_stdout, msg, argp);
printf_filtered ("(y or n) ");
wrap_here ("");
gdb_flush (gdb_stdout);
answer = tui_getc (stdin);
clearerr (stdin); /* in case of C-d */
if (answer == EOF) /* C-d */
{
retval = 1;
break;
}
/* Eat rest of input line, to EOF or newline */
if (answer != '\n')
do
{
ans2 = tui_getc (stdin);
clearerr (stdin);
}
while (ans2 != EOF && ans2 != '\n' && ans2 != '\r');
if (answer >= 'a')
answer -= 040;
if (answer == 'Y')
{
retval = 1;
break;
}
if (answer == 'N')
{
retval = 0;
break;
}
printf_filtered ("Please answer y or n.\n");
}
noecho ();
return retval;
}
/* Prevent recursion of registers_changed_hook(). */
static int tui_refreshing_registers = 0;
static void
tui_registers_changed_hook (void)
{
struct frame_info *fi;
fi = 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 = selected_frame;
if (fi && tui_refreshing_registers == 0)
{
tui_refreshing_registers = 1;
tuiCheckDataValues (fi);
tui_refreshing_registers = 0;
}
}
extern struct breakpoint *breakpoint_chain;
/* Find a breakpoint given its number. Returns null if not found. */
static struct breakpoint *
get_breakpoint (int number)
{
struct breakpoint *bp;
for (bp = breakpoint_chain; bp; bp = bp->next)
{
if (bp->number == number)
return bp;
}
return 0;
}
/* Breakpoint creation hook.
Update the screen to show the new breakpoint. */
static void
tui_event_create_breakpoint (int number)
{
struct breakpoint *bp;
bp = get_breakpoint (number);
if (bp)
{
switch (bp->type)
{
case bp_breakpoint:
case bp_hardware_breakpoint:
tuiAllSetHasBreakAt (bp, 1);
tuiUpdateAllExecInfos ();
break;
default:
break;
}
}
}
/* Breakpoint deletion hook.
Refresh the screen to update the breakpoint marks. */
static void
tui_event_delete_breakpoint (int number)
{
struct breakpoint *bp;
struct breakpoint *b;
int clearIt;
bp = get_breakpoint (number);
if (bp == 0)
return;
/* Before turning off the visuals for the bp, check to see that
there are no other bps at the same address. */
clearIt = 0;
for (b = breakpoint_chain; b; b = b->next)
{
clearIt = (b == bp || b->address != bp->address);
if (!clearIt)
break;
}
if (clearIt)
{
tuiAllSetHasBreakAt (bp, 0);
tuiUpdateAllExecInfos ();
}
}
static void
tui_event_modify_breakpoint (int number)
{
;
}
static void
tui_event_default (int number)
{
;
}
static struct gdb_events *tui_old_event_hooks;
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)
{
ptid_t res;
/* Leave tui mode (optional). */
#if 0
if (tui_active)
{
target_terminal_ours ();
endwin ();
target_terminal_inferior ();
}
#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/...). */
static void
tui_selected_frame_level_changed_hook (int level)
{
struct frame_info *fi;
fi = 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)
{
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 */
if (s)
{
select_source_symtab (s);
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;
}
}
}
/* 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)
{
select_source_symtab (s);
tuiShowFrameInfo (selected_frame);
}
/* 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;
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;
}
/* 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;
/* 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 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)
{
/* 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 ();
/* Decide in which mode to start using GDB (based on -tui). */
if (tui_version)
{
tui_enable ();
}
}
/* Initialize the tui. */
void
_initialize_tui (void)
{
/* Setup initialization hook. */
init_ui_hook = tui_init_hook;
}