/* Low level interface to ptrace, for GDB when running under Unix.
- Copyright (C) 1986-2014 Free Software Foundation, Inc.
+ Copyright (C) 1986-2016 Free Software Foundation, Inc.
This file is part of GDB.
};
/* Our own tty state, which we restore every time we need to deal with
- the terminal. This is only set once, when GDB first starts. The
- settings of flags which readline saves and restores and
+ the terminal. This is set once, when GDB first starts, and then
+ whenever we enter/leave TUI mode (gdb_save_tty_state). The
+ settings of flags which readline saves and restores are
unimportant. */
static struct terminal_info our_terminal_info;
+/* Snapshot of the initial tty state taken during initialization of
+ GDB, before readline/ncurses have had a chance to change it. This
+ is used as the initial tty state given to each new spawned
+ inferior. Unlike our_terminal_info, this is only ever set
+ once. */
+static serial_ttystate initial_gdb_ttystate;
+
static struct terminal_info *get_inflow_inferior_data (struct inferior *);
#ifdef PROCESS_GROUP_TYPE
we save our handlers in these two variables and set SIGINT and SIGQUIT
to SIG_IGN. */
-static void (*sigint_ours) ();
-static void (*sigquit_ours) ();
+static sighandler_t sigint_ours;
+static sighandler_t sigquit_ours;
/* The name of the tty (from the `tty' command) that we're giving to
the inferior when starting it up. This is only (and should only
}
#endif
-enum
- {
- yes, no, have_not_checked
- }
-gdb_has_a_terminal_flag = have_not_checked;
-
-/* The value of the "interactive-mode" setting. */
-static enum auto_boolean interactive_mode = AUTO_BOOLEAN_AUTO;
+/* See terminal.h. */
-/* Implement the "show interactive-mode" option. */
-
-static void
-show_interactive_mode (struct ui_file *file, int from_tty,
- struct cmd_list_element *c,
- const char *value)
+void
+set_initial_gdb_ttystate (void)
{
- if (interactive_mode == AUTO_BOOLEAN_AUTO)
- fprintf_filtered (file, "Debugger's interactive mode "
- "is %s (currently %s).\n",
- value, gdb_has_a_terminal () ? "on" : "off");
- else
- fprintf_filtered (file, "Debugger's interactive mode is %s.\n", value);
-}
+ /* Note we can't do any of this in _initialize_inflow because at
+ that point stdin_serial has not been created yet. */
-/* Does GDB have a terminal (on stdin)? */
-int
-gdb_has_a_terminal (void)
-{
- if (interactive_mode != AUTO_BOOLEAN_AUTO)
- return interactive_mode == AUTO_BOOLEAN_TRUE;
+ initial_gdb_ttystate = serial_get_tty_state (stdin_serial);
- switch (gdb_has_a_terminal_flag)
+ if (initial_gdb_ttystate != NULL)
{
- case yes:
- return 1;
- case no:
- return 0;
- case have_not_checked:
- /* Get all the current tty settings (including whether we have a
- tty at all!). Can't do this in _initialize_inflow because
- serial_fdopen() won't work until the serial_ops_list is
- initialized. */
-
+ our_terminal_info.ttystate
+ = serial_copy_tty_state (stdin_serial, initial_gdb_ttystate);
#ifdef F_GETFL
our_terminal_info.tflags = fcntl (0, F_GETFL, 0);
#endif
-
- gdb_has_a_terminal_flag = no;
- if (stdin_serial != NULL)
- {
- our_terminal_info.ttystate = serial_get_tty_state (stdin_serial);
-
- if (our_terminal_info.ttystate != NULL)
- {
- gdb_has_a_terminal_flag = yes;
#ifdef PROCESS_GROUP_TYPE
- our_terminal_info.process_group = gdb_getpgrp ();
+ our_terminal_info.process_group = gdb_getpgrp ();
#endif
- }
- }
-
- return gdb_has_a_terminal_flag == yes;
- default:
- /* "Can't happen". */
- return 0;
}
}
+/* Does GDB have a terminal (on stdin)? */
+
+static int
+gdb_has_a_terminal (void)
+{
+ return initial_gdb_ttystate != NULL;
+}
+
/* Macro for printing errors from ioctl operations */
#define OOPSY(what) \
{
xfree (tinfo->ttystate);
tinfo->ttystate = serial_copy_tty_state (stdin_serial,
- our_terminal_info.ttystate);
+ initial_gdb_ttystate);
/* Make sure that next time we call terminal_inferior (which will be
before the program runs, as it needs to be), we install the new
and gdb must be able to restore it correctly. */
void
-child_terminal_save_ours (struct target_ops *self)
+gdb_save_tty_state (void)
{
if (gdb_has_a_terminal ())
{
if (!job_control)
{
- sigint_ours = (void (*)()) signal (SIGINT, SIG_IGN);
+ sigint_ours = signal (SIGINT, SIG_IGN);
#ifdef SIGQUIT
- sigquit_ours = (void (*)()) signal (SIGQUIT, SIG_IGN);
+ sigquit_ours = signal (SIGQUIT, SIG_IGN);
#endif
}
if (tinfo->run_terminal != NULL || gdb_has_a_terminal () == 0)
return;
-
+ else
{
#ifdef SIGTTOU
/* Ignore this signal since it will happen when we try to set the
pgrp. */
- void (*osigttou) () = NULL;
+ sighandler_t osigttou = NULL;
#endif
- int result;
+ int result ATTRIBUTE_UNUSED;
#ifdef SIGTTOU
if (job_control)
- osigttou = (void (*)()) signal (SIGTTOU, SIG_IGN);
+ osigttou = signal (SIGTTOU, SIG_IGN);
#endif
xfree (tinfo->ttystate);
static void
inflow_inferior_data_cleanup (struct inferior *inf, void *arg)
{
- struct terminal_info *info = arg;
+ struct terminal_info *info = (struct terminal_info *) arg;
xfree (info->run_terminal);
xfree (info->ttystate);
{
struct terminal_info *info;
- info = inferior_data (inf, inflow_inferior_data);
+ info = (struct terminal_info *) inferior_data (inf, inflow_inferior_data);
if (info == NULL)
{
info = XCNEW (struct terminal_info);
{
struct terminal_info *info;
- info = inferior_data (inf, inflow_inferior_data);
+ info = (struct terminal_info *) inferior_data (inf, inflow_inferior_data);
if (info != NULL)
{
xfree (info->run_terminal);
tty = open ("/dev/tty", O_RDWR);
if (tty > 0)
{
- void (*osigttou) ();
+ sighandler_t osigttou;
- osigttou = (void (*)()) signal (SIGTTOU, SIG_IGN);
+ osigttou = signal (SIGTTOU, SIG_IGN);
ioctl (tty, TIOCNOTTY, 0);
close (tty);
signal (SIGTTOU, osigttou);
#endif
}
-static void (*osig) ();
+static sighandler_t osig;
static int osig_set;
void
if (inf->attach_flag || tinfo->run_terminal)
{
- osig = (void (*)()) signal (SIGINT, pass_signal);
+ osig = signal (SIGINT, pass_signal);
osig_set = 1;
}
else
add_info ("terminal", term_info,
_("Print inferior's saved terminal status."));
- add_setshow_auto_boolean_cmd ("interactive-mode", class_support,
- &interactive_mode, _("\
-Set whether GDB's standard input is a terminal."), _("\
-Show whether GDB's standard input is a terminal."), _("\
-If on, GDB assumes that standard input is a terminal. In practice, it\n\
-means that GDB should wait for the user to answer queries associated to\n\
-commands entered at the command prompt. If off, GDB assumes that standard\n\
-input is not a terminal, and uses the default answer to all queries.\n\
-If auto (the default), determine which mode to use based on the standard\n\
-input settings."),
- NULL,
- show_interactive_mode,
- &setlist, &showlist);
-
terminal_is_ours = 1;
/* OK, figure out whether we have job control. If neither termios nor
projects / deliverable / binutils-gdb.git / blobdiff