/* Interface GDB to the GNU Hurd
- Copyright (C) 1992, 1995, 1996, 1997 Free Software Foundation, Inc.
+ Copyright (C) 1992, 1995, 1996, 1997, 1999 Free Software Foundation, Inc.
This file is part of GDB.
*/
#include <stdio.h>
+#include <string.h>
#include <errno.h>
#include <signal.h>
#include <assert.h>
/* We include this because we don't need the access macros and they conflict
with gdb's definitions (ick). This is very non standard! */
-#include <waitflags.h>
+#define _SYS_WAIT_H /* Inhibit warning from <bits/waitflags.h>. */
+#include <bits/waitflags.h>
#include <mach.h>
#include <mach/message.h>
/* Forward decls */
extern struct target_ops gnu_ops;
-extern char *strerror();
int inf_update_procs (struct inf *inf);
struct inf *make_inf ();
void inf_detach (struct inf *inf);
void inf_attach (struct inf *inf, int pid);
void inf_signal (struct inf *inf, enum target_signal sig);
+void inf_continue (struct inf *inf);
#define inf_debug(_inf, msg, args...) \
do { struct inf *__inf = (_inf); \
/* True if we think at least one thread in the inferior could currently be
running. */
- int running : 1;
+ unsigned int running : 1;
/* True if the process has stopped (in the proc server sense). Note that
since a proc server `stop' leaves the signal thread running, the inf can
be RUNNING && STOPPED... */
- int stopped : 1;
+ unsigned int stopped : 1;
+
+ /* True if the inferior has no message port. */
+ unsigned int nomsg : 1;
/* True if the inferior is traced. */
- int traced : 1;
+ unsigned int traced : 1;
/* True if we shouldn't try waiting for the inferior, usually because we
can't for some reason. */
- int no_wait : 1;
+ unsigned int no_wait : 1;
/* When starting a new inferior, we don't try to validate threads until all
the proper execs have been done. This is a count of how many execs we
inf->step_thread = 0;
inf->signal_thread = 0;
inf->event_port = MACH_PORT_NULL;
- inf->stopped = 0;
inf->running = 0;
+ inf->stopped = 0;
+ inf->nomsg = 1;
inf->traced = 0;
inf->no_wait = 0;
inf->pending_execs = 0;
inf_set_pid (inf, -1);
inf->pid = 0;
+ inf->running = 0;
+ inf->stopped = 0;
+ inf->nomsg = 1;
inf->traced = 0;
inf->no_wait = 0;
- inf->stopped = 0;
- inf->running = 0;
inf->pending_execs = 0;
if (inf->event_port)
inf->pid = -1;
}
\f
-/* Validates INF's stopped field from the actual proc server state. */
+/* Validates INF's stopped, nomsg and traced field from the actual
+ proc server state. Note that the traced field is only updated from
+ the proc server state if we do not have a message port. If we do
+ have a message port we'd better look at the tracemask itself. */
static void
-inf_validate_stopped (struct inf *inf)
+inf_validate_procinfo (struct inf *inf)
{
char *noise;
mach_msg_type_number_t noise_len = 0;
if (! err)
{
inf->stopped = !!(pi->state & PI_STOPPED);
+ inf->nomsg = !!(pi->state & PI_NOMSG);
+ if (inf->nomsg)
+ inf->traced = !!(pi->state & PI_TRACED);
vm_deallocate (mach_task_self (), (vm_address_t)pi, pi_len);
if (noise_len > 0)
vm_deallocate (mach_task_self (), (vm_address_t)noise, noise_len);
{
struct proc *thread;
+ inf_validate_procinfo (inf);
+
inf_set_traced (inf, 0);
if (inf->stopped)
- inf_signal (inf, TARGET_SIGNAL_0);
+ {
+ if (inf->nomsg)
+ inf_continue (inf);
+ else
+ inf_signal (inf, TARGET_SIGNAL_0);
+ }
proc_restore_exc_port (task);
task->sc = inf->detach_sc;
#undef NAME
}
\f
+/* Continue INF without delivering a signal. This is meant to be used
+ when INF does not have a message port. */
+void
+inf_continue (struct inf *inf)
+{
+ process_t proc;
+ error_t err = proc_pid2proc (proc_server, inf->pid, &proc);
+
+ if (! err)
+ {
+ inf_debug (inf, "continuing process");
+
+ err = proc_mark_cont (proc);
+ if (! err)
+ {
+ struct proc *thread;
+
+ for (thread = inf->threads; thread; thread = thread->next)
+ thread_resume (thread->port);
+
+ inf->stopped = 0;
+ }
+ }
+
+ if (err)
+ warning ("Can't continue process: %s", strerror (err));
+}
+\f
/* The inferior used for all gdb target ops. */
struct inf *current_inferior = 0;
inf_debug (inf, "tid = %d, step = %d, sig = %d", tid, step, sig);
+ inf_validate_procinfo (inf);
+
if (sig != TARGET_SIGNAL_0 || inf->stopped)
- inf_signal (inf, sig);
+ {
+ if (sig == TARGET_SIGNAL_0 && inf->nomsg)
+ inf_continue (inf);
+ else
+ inf_signal (inf, sig);
+ }
else if (inf->wait.exc.reply != MACH_PORT_NULL)
/* We received an exception to which we have chosen not to forward, so
abort the faulting thread, which will perhaps retake it. */
if (ptrace (PTRACE_TRACEME) != 0)
error ("ptrace (PTRACE_TRACEME) failed!");
}
- int attach_to_child (int pid)
+ void attach_to_child (int pid)
{
/* Attach to the now stopped child, which is actually a shell... */
inf_debug (inf, "attaching to child: %d", pid);
push_target (&gnu_ops);
inf->pending_execs = 2;
+ inf->nomsg = 1;
inf->traced = 1;
/* Now let the child run again, knowing that it will stop immediately
inferior_pid = inf_pick_first_thread ();
startup_inferior (inf->pending_execs);
-
- return inferior_pid;
}
inf_debug (inf, "creating inferior");
- fork_inferior (exec_file, allargs, env, trace_me, attach_to_child, NULL, NULL);
+ fork_inferior (exec_file, allargs, env, trace_me, attach_to_child,
+ NULL, NULL);
+ inf_validate_procinfo (inf);
inf_update_signal_thread (inf);
inf_set_traced (inf, inf->want_signals);
attach_flag = 1;
push_target (&gnu_ops);
- inf_update_signal_thread (inf);
- inf_set_traced (inf, inf->want_signals);
-
+ /* We have to initialize the terminal settings now, since the code
+ below might try to restore them. */
+ target_terminal_init ();
+
/* If the process was stopped before we attached, make it continue the next
time the user does a continue. */
- inf_validate_stopped (inf);
+ inf_validate_procinfo (inf);
+
+ inf_update_signal_thread (inf);
+ inf_set_traced (inf, inf->want_signals);
#if 0 /* Do we need this? */
renumber_threads (0); /* Give our threads reasonable names. */
error ("to_stop target function not implemented");
}
-static void
+static char *
gnu_pid_to_exec_file ()
{
error ("to_pid_to_exec_file target function not implemented");
+ return NULL;
}
add_task_commands ();
add_thread_commands ();
-#if MAINTENANCE_CMDS
add_set_cmd ("gnu-debug", class_maintenance,
var_boolean, (char *)&gnu_debug_flag,
"Set debugging output for the gnu backend.", &maintenancelist);
-#endif
}
\f
#ifdef FLUSH_INFERIOR_CACHE
projects / deliverable / binutils-gdb.git / blobdiff