/* Low level interface to ptrace, for GDB when running under Unix.
- Copyright 1986, 1987, 1989, 1991, 1992 Free Software Foundation, Inc.
+ Copyright 1986-87, 1989, 1991-92, 1995, 1998 Free Software Foundation, Inc.
This file is part of GDB.
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "frame.h"
#include "serial.h"
#include "terminal.h"
#include "target.h"
-#include "thread.h"
+#include "gdbthread.h"
+#include "gdb_string.h"
#include <signal.h>
#include <fcntl.h>
-
-#if !defined (HAVE_TERMIOS) && !defined (HAVE_TERMIO) && !defined (HAVE_SGTTY) && !defined (__GO32__)
-#define HAVE_SGTTY
-#endif
-
-#if defined (HAVE_TERMIOS)
-#include <termios.h>
+#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
+#ifdef HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
#ifdef HAVE_TERMIOS
#define PROCESS_GROUP_TYPE pid_t
#endif
+#ifdef HAVE_TERMIO
+#define PROCESS_GROUP_TYPE int
+#endif
+
#ifdef HAVE_SGTTY
#ifdef SHORT_PGRP
/* This is only used for the ultra. Does it have pid_t? */
#endif
#endif /* sgtty */
+#if defined (SIGIO) && defined (FASYNC) && defined (FD_SET) && defined (F_SETOWN)
+static void
+handle_sigio PARAMS ((int));
+#endif
+
+extern void _initialize_inflow PARAMS ((void));
+
+static void
+pass_signal PARAMS ((int));
+
static void
kill_command PARAMS ((char *, int));
inferior only. If we have job control, that takes care of it. If not,
we save our handlers in these two variables and set SIGINT and SIGQUIT
to SIG_IGN. */
+
static void (*sigint_ours) ();
static void (*sigquit_ours) ();
inferior's settings are in effect. Ignored if !gdb_has_a_terminal
(). */
-static int terminal_is_ours;
+int terminal_is_ours;
enum {yes, no, have_not_checked} gdb_has_a_terminal_flag = have_not_checked;
#ifdef HAVE_TERMIOS
our_process_group = tcgetpgrp (0);
#endif
+#ifdef HAVE_TERMIO
+ our_process_group = getpgrp ();
+#endif
#ifdef HAVE_SGTTY
ioctl (0, TIOCGPGRP, &our_process_group);
#endif
before we actually run the inferior. */
void
-terminal_init_inferior ()
+terminal_init_inferior_with_pgrp (pgrp)
+ int pgrp;
{
if (gdb_has_a_terminal ())
{
if (inferior_ttystate)
free (inferior_ttystate);
inferior_ttystate = SERIAL_GET_TTY_STATE (stdin_serial);
+
#ifdef PROCESS_GROUP_TYPE
-#ifdef PIDGET
- /* This is for Lynx, and should be cleaned up by having Lynx be
- a separate debugging target with a version of
- target_terminal_init_inferior which passes in the process
- group to a generic routine which does all the work (and the
- non-threaded child_terminal_init_inferior can just pass in
- inferior_pid to the same routine). */
- inferior_process_group = PIDGET (inferior_pid);
-#else
- inferior_process_group = inferior_pid;
-#endif
+ inferior_process_group = pgrp;
#endif
/* Make sure that next time we call terminal_inferior (which will be
}
}
+void
+terminal_init_inferior ()
+{
+#ifdef PROCESS_GROUP_TYPE
+ /* This is for Lynx, and should be cleaned up by having Lynx be a separate
+ debugging target with a version of target_terminal_init_inferior which
+ passes in the process group to a generic routine which does all the work
+ (and the non-threaded child_terminal_init_inferior can just pass in
+ inferior_pid to the same routine). */
+ /* We assume INFERIOR_PID is also the child's process group. */
+ terminal_init_inferior_with_pgrp (PIDGET (inferior_pid));
+#endif /* PROCESS_GROUP_TYPE */
+}
+
/* Put the inferior's terminal settings into effect.
This is preparation for starting or resuming the inferior. */
if (!job_control)
{
sigint_ours = (void (*) ()) signal (SIGINT, SIG_IGN);
+#ifdef SIGQUIT
sigquit_ours = (void (*) ()) signal (SIGQUIT, SIG_IGN);
+#endif
}
/* If attach_flag is set, we don't know whether we are sharing a
#ifdef HAVE_TERMIOS
inferior_process_group = tcgetpgrp (0);
#endif
+#ifdef HAVE_TERMIO
+ inferior_process_group = getpgrp ();
+#endif
#ifdef HAVE_SGTTY
ioctl (0, TIOCGPGRP, &inferior_process_group);
#endif
if (!job_control)
{
signal (SIGINT, sigint_ours);
+#ifdef SIGQUIT
signal (SIGQUIT, sigquit_ours);
+#endif
}
#ifdef F_GETFL
if (inferior_thisrun_terminal == 0)
return;
-#if !defined(__GO32__)
+#if !defined(__GO32__) && !defined(_WIN32)
#ifdef TIOCNOTTY
/* Disconnect the child process from our controlling terminal. On some
systems (SVR4 for example), this may cause a SIGTTOU, so temporarily
{ close (2); dup (tty); }
if (tty > 2)
close(tty);
-#endif /* !go32 */
+#endif /* !go32 && !win32*/
}
\f
/* Kill the inferior process. Make us have no inferior. */
char *arg;
int from_tty;
{
- /* Shouldn't this be target_has_execution? FIXME. */
+ /* FIXME: This should not really be inferior_pid (or target_has_execution).
+ It should be a distinct flag that indicates that a target is active, cuz
+ some targets don't have processes! */
+
if (inferior_pid == 0)
error ("The program is not being run.");
if (!query ("Kill the program being debugged? "))
pass_signal (signo)
int signo;
{
- kill (inferior_pid, SIGINT);
+#ifndef _WIN32
+ kill (PIDGET (inferior_pid), SIGINT);
+#endif
}
static void (*osig)();
void
set_sigint_trap()
{
- osig = (void (*) ()) signal (SIGINT, pass_signal);
+ if (attach_flag || inferior_thisrun_terminal)
+ {
+ osig = (void (*) ()) signal (SIGINT, pass_signal);
+ }
}
void
clear_sigint_trap()
{
- signal (SIGINT, osig);
+ if (attach_flag || inferior_thisrun_terminal)
+ {
+ signal (SIGINT, osig);
+ }
}
\f
-#if defined (SIGIO) && defined (FASYNC) && defined (FD_SET)
+#if defined (SIGIO) && defined (FASYNC) && defined (FD_SET) && defined (F_SETOWN)
static void (*old_sigio) ();
static void
numfds = select (target_activity_fd + 1, &readfds, NULL, NULL, NULL);
if (numfds >= 0 && FD_ISSET (target_activity_fd, &readfds))
{
+#ifndef _WIN32
if ((*target_activity_function) ())
kill (inferior_pid, SIGINT);
+#endif
}
}
if (job_control)
{
-#if defined (NEED_POSIX_SETPGID) || defined (HAVE_TERMIOS)
- /* Do all systems with termios have setpgid? I hope so. */
+#if defined (NEED_POSIX_SETPGID) || (defined (HAVE_TERMIOS) && defined (HAVE_SETPGID))
/* setpgid (0, 0) is supposed to work and mean the same thing as
this, but on Ultrix 4.2A it fails with EPERM (and
setpgid (getpid (), getpid ()) succeeds). */
#ifdef _POSIX_JOB_CONTROL
job_control = 1;
#else
+#ifdef _SC_JOB_CONTROL
job_control = sysconf (_SC_JOB_CONTROL);
-#endif
-#endif /* termios */
+#else
+ job_control = 0; /* have to assume the worst */
+#endif /* _SC_JOB_CONTROL */
+#endif /* _POSIX_JOB_CONTROL */
+#endif /* HAVE_TERMIOS */
#ifdef HAVE_SGTTY
#ifdef TIOCGPGRP
projects / deliverable / binutils-gdb.git / blobdiff