/* Interface GDB to the GNU Hurd
- Copyright (C) 1992, 1995, 1996 Free Software Foundation, Inc.
+ Copyright (C) 1992, 1995, 1996, 1997 Free Software Foundation, Inc.
This file is part of GDB.
#include <hurd/interrupt.h>
#include <hurd/sigpreempt.h>
+#include <portinfo.h>
+
#include "defs.h"
#include "inferior.h"
#include "symtab.h"
#include "notify_S.h"
#include "process_reply_S.h"
#include "msg_reply_S.h"
-
#include "exc_request_U.h"
#include "msg_U.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_clear_wait (struct inf *inf);
void inf_cleanup (struct inf *inf);
-void inf_startup (struct inf *inf, int pid, task_t task);
+void inf_startup (struct inf *inf, int pid);
int inf_update_suspends (struct inf *inf);
-void inf_set_task (struct inf *inf, task_t port);
+void inf_set_pid (struct inf *inf, pid_t pid);
void inf_validate_procs (struct inf *inf);
void inf_steal_exc_ports (struct inf *inf);
void inf_restore_exc_ports (struct inf *inf);
-int inf_update_procs (struct inf *inf);
struct proc *inf_tid_to_proc (struct inf *inf, int tid);
-inline void inf_set_threads_resume_sc (struct inf *inf, struct proc
- *run_thread, int run_others);
+inline void inf_set_threads_resume_sc (struct inf *inf,
+ struct proc *run_thread,
+ int run_others);
inline int inf_set_threads_resume_sc_for_signal_thread (struct inf *inf);
inline void inf_suspend (struct inf *inf);
inline void inf_resume (struct inf *inf);
do { struct inf *__inf = (_inf); \
debug ("{inf %d %p}: " msg, __inf->pid, __inf , ##args); } while (0)
+void proc_abort (struct proc *proc, int force);
+thread_state_t proc_get_state (struct proc *proc, int force);
struct proc *make_proc (struct inf *inf, mach_port_t port, int tid);
struct proc *_proc_free (struct proc *proc);
int proc_update_sc (struct proc *proc);
-void proc_abort (struct proc *proc, int force);
-thread_state_t proc_get_state (struct proc *proc, int force);
error_t proc_get_exception_port (struct proc *proc, mach_port_t *port);
error_t proc_set_exception_port (struct proc *proc, mach_port_t port);
static mach_port_t _proc_get_exc_port (struct proc *proc);
(pausing individual threads as necessary). */
int pause_sc;
+ /* The task suspend count left when detaching from a task. */
+ int detach_sc;
+
/* The initial values used for the run_sc and pause_sc of newly discovered
threads -- see the definition of those fields in struct proc. */
int default_thread_run_sc;
int default_thread_pause_sc;
+ int default_thread_detach_sc;
/* True if the process should be traced when started/attached. Newly
started processes *must* be traced at first to exec them properly, but
int want_exceptions;
};
+
int __proc_pid (struct proc *proc)
{
return proc->inf->pid;
assert (proc_is_thread (proc));
proc_debug (proc, "storing back changed thread state");
err = thread_set_state (proc->port, THREAD_STATE_FLAVOR,
- &proc->state, THREAD_STATE_SIZE);
+ (thread_state_t)&proc->state, THREAD_STATE_SIZE);
if (! err)
proc->state_changed = 0;
}
mach_msg_type_number_t state_size = THREAD_STATE_SIZE;
error_t err =
thread_get_state (proc->port, THREAD_STATE_FLAVOR,
- &proc->state, &state_size);
+ (thread_state_t)&proc->state, &state_size);
proc_debug (proc, "getting thread state");
proc->state_valid = !err;
}
{
if (will_modify)
proc->state_changed = 1;
- return &proc->state;
+ return (thread_state_t)&proc->state;
}
else
return 0;
}
\f
+/* Set PORT to PROC's exception port. */
error_t
proc_get_exception_port (struct proc *proc, mach_port_t *port)
{
return thread_get_exception_port (proc->port, port);
}
+/* Set PROC's exception port to PORT. */
error_t
proc_set_exception_port (struct proc *proc, mach_port_t port)
{
}
}
-/* If we previously replaced PROC's exception port, put back what we found
- there at the time, unless *our* exception port has since be overwritten,
- in which case who knows what's going on. */
+/* If we previously replaced PROC's exception port, put back what we
+ found there at the time, unless *our* exception port has since been
+ overwritten, in which case who knows what's going on. */
void
proc_restore_exc_port (struct proc *proc)
{
}
}
\f
-/* Turns hardware tracing in PROC on or off when SET is true or fals,
+/* Turns hardware tracing in PROC on or off when SET is true or false,
respectively. Returns true on success. */
int
proc_trace (struct proc *proc, int set)
proc->next = 0;
proc->saved_exc_port = MACH_PORT_NULL;
proc->exc_port = MACH_PORT_NULL;
+
proc->sc = 0;
proc->cur_sc = 0;
+
+ /* Note that these are all the values for threads; the task simply uses the
+ corresponding field in INF directly. */
proc->run_sc = inf->default_thread_run_sc;
proc->pause_sc = inf->default_thread_pause_sc;
+ proc->detach_sc = inf->default_thread_detach_sc;
proc->resume_sc = proc->run_sc;
+
proc->aborted = 0;
+ proc->dead = 0;
proc->state_valid = 0;
proc->state_changed = 0;
return proc;
}
-/* Frees PROC and any resources it uses, and returns the value of PROC's next
- field. */
+/* Frees PROC and any resources it uses, and returns the value of PROC's
+ next field. */
struct proc *
_proc_free (struct proc *proc)
{
inf->no_wait = 0;
inf->pending_execs = 0;
inf->pause_sc = 1;
+ inf->detach_sc = 0;
inf->default_thread_run_sc = 0;
inf->default_thread_pause_sc = 0;
+ inf->default_thread_detach_sc = 0;
inf->want_signals = 1; /* By default */
inf->want_exceptions = 1; /* By default */
return inf;
}
+/* clear INF's target wait status. */
void
inf_clear_wait (struct inf *inf)
{
inf_clear_wait (inf);
- inf_set_task (inf, MACH_PORT_NULL);
+ inf_set_pid (inf, -1);
inf->pid = 0;
inf->traced = 0;
inf->no_wait = 0;
}
void
-inf_startup (struct inf *inf, int pid, task_t task)
+inf_startup (struct inf *inf, int pid)
{
error_t err;
- inf_debug (inf, "startup: pid = %d, task = %d", pid, task);
+ inf_debug (inf, "startup: pid = %d", pid);
inf_cleanup (inf);
/* Make a send right for it, so we can easily copy it for other people. */
mach_port_insert_right (mach_task_self (), inf->event_port,
inf->event_port, MACH_MSG_TYPE_MAKE_SEND);
-
- if (inf->pause_sc)
- task_suspend (task);
-
- inf_set_task (inf, task);
-
- if (inf->task)
- {
- inf->pid = pid;
- if (inf->pause_sc)
- inf->task->sc = inf->task->cur_sc = 1; /* Reflect task_suspend above */
- }
+ inf_set_pid (inf, pid);
}
\f
+/* close current process, if any, and attach INF to process PORT */
void
-inf_set_task (struct inf *inf, mach_port_t port)
+inf_set_pid (struct inf *inf, pid_t pid)
{
+ task_t task_port;
struct proc *task = inf->task;
- inf_debug (inf, "setting task: %d", port);
+ inf_debug (inf, "setting pid: %d", pid);
- if (task && task->port != port)
+ if (pid < 0)
+ task_port = MACH_PORT_NULL;
+ else
+ {
+ error_t err = proc_pid2task (proc_server, pid, &task_port);
+ if (err)
+ error ("Error getting task for pid %d: %s", pid, strerror (err));
+ }
+
+ inf_debug (inf, "setting task: %d", task_port);
+
+ if (inf->pause_sc)
+ task_suspend (task_port);
+
+ if (task && task->port != task_port)
{
inf->task = 0;
inf_validate_procs (inf); /* Trash all the threads. */
_proc_free (task); /* And the task. */
}
- if (port != MACH_PORT_NULL)
+ if (task_port != MACH_PORT_NULL)
{
- inf->task = make_proc (inf, port, PROC_TID_TASK);
+ inf->task = make_proc (inf, task_port, PROC_TID_TASK);
inf->threads_up_to_date = 0;
}
+
+ if (inf->task)
+ {
+ inf->pid = pid;
+ if (inf->pause_sc)
+ inf->task->sc = inf->task->cur_sc = 1; /* Reflect task_suspend above */
+ }
+ else
+ inf->pid = -1;
}
\f
/* Validates INF's stopped field from the actual proc server state. */
mach_msg_type_number_t noise_len = 0;
struct procinfo *pi;
mach_msg_type_number_t pi_len = 0;
+ int info_flags = 0;
error_t err =
- proc_getprocinfo (proc_server, inf->pid, 0,
+ proc_getprocinfo (proc_server, inf->pid, &info_flags,
(procinfo_t *)&pi, &pi_len, &noise, &noise_len);
if (! err)
}
}
-/* Validates INF's task suspend count. */
+/* Validates INF's task suspend count. If it's higher than we expect, verify
+ with the user before `stealing' the extra count. */
static void
inf_validate_task_sc (struct inf *inf)
{
struct task_basic_info info;
mach_msg_type_number_t info_len = TASK_BASIC_INFO_COUNT;
- error_t err = task_info (inf->task->port, TASK_BASIC_INFO, &info, &info_len);
- if (! err)
+ error_t err =
+ task_info (inf->task->port, TASK_BASIC_INFO, (task_info_t)&info, &info_len);
+
+ if (err)
+ inf->task->dead = 1; /* oh well */
+ else if (inf->task->cur_sc < info.suspend_count)
{
- if (inf->task->cur_sc < info.suspend_count)
- warning ("Pid %d is suspended; continuing will clear existing suspend count.", inf->pid);
+ int abort;
+
+ target_terminal_ours (); /* Allow I/O. */
+ abort =
+ !query ("Pid %d has an additional task suspend count of %d; clear it? ",
+ inf->pid, info.suspend_count - inf->task->cur_sc);
+ target_terminal_inferior (); /* Give it back to the child. */
+
+ if (abort)
+ error ("Additional task suspend count left untouched.");
+
inf->task->cur_sc = info.suspend_count;
}
}
inf_set_traced (struct inf *inf, int on)
{
if (on != inf->traced)
- if (inf->task)
+ if (inf->task && !inf->task->dead)
/* Make it take effect immediately. */
{
- error_t (*f)(mach_port_t, mach_port_t, int) =
- on ? msg_set_some_exec_flags : msg_clear_some_exec_flags;
+ sigset_t mask = on ? ~(sigset_t)0 : 0;
error_t err =
- INF_RESUME_MSGPORT_RPC (inf, (*f)(msgport, refport, EXEC_TRACED));
+ INF_RESUME_MSGPORT_RPC (inf, msg_set_init_int (msgport, refport,
+ INIT_TRACEMASK, mask));
if (err == EIEIO)
- warning ("Can't modify tracing state for pid %d: No signal thread",
- inf->pid);
+ {
+ if (on)
+ warning ("Can't modify tracing state for pid %d: No signal thread",
+ inf->pid);
+ inf->traced = on;
+ }
else if (err)
warning ("Can't modify tracing state for pid %d: %s",
inf->pid, strerror (err));
inf_tid_to_thread (struct inf *inf, int tid)
{
struct proc *thread = inf->threads;
+
while (thread)
if (thread->tid == tid)
return thread;
unsigned num_threads;
struct proc *task = inf->task;
- inf->threads_up_to_date = !inf->running;
+ /* If no threads are currently running, this function will guarantee that
+ things are up to date. The exception is if there are zero threads --
+ then it is almost certainly in an odd state, and probably some outside
+ agent will create threads. */
+ inf->threads_up_to_date = inf->threads ? !inf->running : 0;
if (task)
{
if (err)
/* TASK must be dead. */
{
- task->port = MACH_PORT_NULL;
- _proc_free (task);
- task = inf->task = 0;
+ task->dead = 1;
+ task = 0;
}
}
thread->sc = thread->resume_sc;
if (inf->task)
- inf->task->sc = 0;
+ {
+ if (! inf->pending_execs)
+ /* Try to make sure our task count is correct -- in the case where
+ we're waiting for an exec though, things are too volatile, so just
+ assume things will be reasonable (which they usually will be). */
+ inf_validate_task_sc (inf);
+ inf->task->sc = 0;
+ }
inf_update_suspends (inf);
}
inf_update_suspends (inf);
}
\f
-/* INF has one thread PROC that is in single-stepping mode. This functions
+/* INF has one thread PROC that is in single-stepping mode. This function
changes it to be PROC, changing any old step_thread to be a normal one. A
- PROC of 0 clears an any existing value. */
+ PROC of 0 clears any existing value. */
void
inf_set_step_thread (struct inf *inf, struct proc *thread)
{
inf_signal (inf, TARGET_SIGNAL_0);
proc_restore_exc_port (task);
- task->sc = 0;
+ task->sc = inf->detach_sc;
for (thread = inf->threads; thread; thread = thread->next)
{
proc_restore_exc_port (thread);
- thread->sc = 0;
+ thread->sc = thread->detach_sc;
}
inf_update_suspends (inf);
void
inf_attach (struct inf *inf, int pid)
{
- error_t err;
- task_t task;
-
inf_debug (inf, "attaching: %d", pid);
- err = proc_pid2task (proc_server, pid, &task);
- if (err)
- error ("Error getting task for pid %d: %s", pid, strerror (err));
-
if (inf->pid)
inf_detach (inf);
- inf_startup (inf, pid, task);
+ inf_startup (inf, pid);
}
\f
/* Makes sure that we've got our exception ports entrenched in the process. */
e->exception, e->code, e->subcode);
}
else
- warning ("Can't forward spontaneous exception (%s).", NAME);
+ error ("Can't forward spontaneous exception (%s).", NAME);
}
else
/* A Unix signal. */
if (inf->stopped)
- /* The process is stopped an expecting a signal. Just send off a
+ /* The process is stopped and expecting a signal. Just send off a
request and let it get handled when we resume everything. */
{
inf_debug (inf, "sending %s to stopped process", NAME);
msg_sig_post_untraced_request (msgport,
inf->event_port,
MACH_MSG_TYPE_MAKE_SEND_ONCE,
- host_sig,
+ host_sig, 0,
refport));
if (! err)
/* Posting an untraced signal automatically continues it.
{
inf_debug (inf, "sending %s to unstopped process (so resuming signal thread)", NAME);
err =
- INF_RESUME_MSGPORT_RPC (inf,
- msg_sig_post_untraced (msgport,
- host_sig, refport));
+ INF_RESUME_MSGPORT_RPC (inf, msg_sig_post_untraced (msgport,
+ host_sig, 0, refport));
}
if (err == EIEIO)
struct proc *thread;
struct inf *inf = current_inferior;
+ assert (inf->task);
+
+ if (!inf->threads && !inf->pending_execs)
+ /* No threads! Assume that maybe some outside agency is frobbing our
+ task, and really look for new threads. If we can't find any, just tell
+ the user to try again later. */
+ {
+ inf_validate_procs (inf);
+ if (!inf->threads && !inf->task->dead)
+ error ("There are no threads; try again later.");
+ }
+
waiting_inf = inf;
inf_debug (inf, "waiting for: %d", tid);
outstanding wait request, so we have to cancel the previous one. */
{
inf_debug (inf, "cancelling previous wait on pid %d", proc_wait_pid);
- interrupt_operation (proc_server);
+ interrupt_operation (proc_server, 0);
}
err =
(3) wait reply from the proc server. */
inf_debug (inf, "waiting for an event...");
- err = _hurd_intr_rpc_mach_msg (&msg.hdr, MACH_RCV_MSG, 0,
- sizeof (struct msg),
- inf->event_port, MACH_PORT_NULL);
+ err = mach_msg (&msg.hdr, MACH_RCV_MSG | MACH_RCV_INTERRUPT,
+ 0, sizeof (struct msg), inf->event_port,
+ MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
/* Re-suspend the task. */
inf_suspend (inf);
- if (err == EINTR)
+ if (!inf->task && inf->pending_execs)
+ /* When doing an exec, it's possible that the old task wasn't reused
+ (e.g., setuid execs). So if the task seems to have disappeared,
+ attempt to refetch it, as the pid should still be the same. */
+ inf_set_pid (inf, inf->pid);
+
+ if (err == EMACH_RCV_INTERRUPTED)
inf_debug (inf, "interrupted");
else if (err)
error ("Couldn't wait for an event: %s", strerror (err));
/* Since gdb is actually counting the number of times the inferior
stops, expecting one stop per exec, we only return major events
while execing. */
- w->suppress = 1;
+ {
+ w->suppress = 1;
+ inf_debug (inf, "pending_execs = %d, ignoring minor event",
+ inf->pending_execs);
+ }
else if (kind == TARGET_WAITKIND_STOPPED
&& w->status.value.sig == TARGET_SIGNAL_TRAP)
/* Ah hah! A SIGTRAP from the inferior while starting up probably
means we've succesfully completed an exec! */
- if (--inf->pending_execs == 0)
- /* We're done! */
- {
- prune_threads (1); /* Get rid of the old shell threads */
- renumber_threads (0); /* Give our threads reasonable names. */
- }
+ {
+ if (--inf->pending_execs == 0)
+ /* We're done! */
+ {
+#if 0 /* do we need this? */
+ prune_threads (1); /* Get rid of the old shell threads */
+ renumber_threads (0); /* Give our threads reasonable names. */
+#endif
+ }
+ inf_debug (inf, "pending exec completed, pending_execs => %d",
+ inf->pending_execs);
+ }
+ else if (kind == TARGET_WAITKIND_STOPPED)
+ /* It's possible that this signal is because of a crashed process
+ being handled by the hurd crash server; in this case, the process
+ will have an extra task suspend, which we need to know about.
+ Since the code in inf_resume that normally checks for this is
+ disabled while INF->pending_execs, we do the check here instead. */
+ inf_validate_task_sc (inf);
}
if (inf->wait.suppress)
if (inf_update_procs (inf) && inf->threads)
tid = inf->threads->tid; /* The first available thread. */
else
- tid = -1;
+ tid = inferior_pid; /* let wait_for_inferior handle exit case */
if (thread && tid >= 0 && status->kind != TARGET_WAITKIND_SPURIOUS
&& inf->pause_sc == 0 && thread->pause_sc == 0)
/* Record the exception so that we can forward it later. */
{
if (thread->exc_port == port)
- inf->wait.exc.handler = thread->saved_exc_port;
+ {
+ inf_debug (waiting_inf, "Handler is thread exeption port <%d>",
+ thread->saved_exc_port);
+ inf->wait.exc.handler = thread->saved_exc_port;
+ }
else
{
+ inf_debug (waiting_inf, "Handler is task exeption port <%d>",
+ inf->task->saved_exc_port);
inf->wait.exc.handler = inf->task->saved_exc_port;
assert (inf->task->exc_port == port);
}
inf->wait.status.kind = TARGET_WAITKIND_SIGNALLED;
inf->wait.status.value.sig = TARGET_SIGNAL_KILL;
}
-\f
-/* Notify server routines. The only real one is dead name notification. */
+/* Notify server routines. The only real one is dead name notification. */
error_t
do_mach_notify_dead_name (mach_port_t notify, mach_port_t dead_port)
{
return 0;
}
-
+\f
static error_t
ill_rpc (char *fun)
{
error_t
S_proc_wait_reply (mach_port_t reply, error_t err,
- int status, rusage_t rusage, pid_t pid)
+ int status, int sigcode, rusage_t rusage, pid_t pid)
{
struct inf *inf = waiting_inf;
- inf_debug (inf, "err = %s, pid = %d, status = 0x%x",
- err ? strerror (err) : "0", pid, status);
+ inf_debug (inf, "err = %s, pid = %d, status = 0x%x, sigcode = %d",
+ err ? strerror (err) : "0", pid, status, sigcode);
if (err && proc_wait_pid && (!inf->task || !inf->task->port))
/* Ack. The task has died, but the task-died notification code didn't
{
inf_debug (inf, "process has stopped itself");
inf->stopped = 1;
-
- /* We recheck the task suspend count here because the crash server
- messes with it in an unfriendly way, right before `stopping'. */
- inf_validate_task_sc (inf);
}
}
else
the process, as we're just going to stop it right away anyway. */
return;
+ inf_update_procs (inf);
+
if (tid < 0)
/* Allow all threads to run, except perhaps single-stepping one. */
{
/* Just allow a single thread to run. */
{
struct proc *thread = inf_tid_to_thread (inf, tid);
- assert (thread);
-
+ if (! thread)
+ error ("Can't run single thread id %d: no such thread!");
inf_debug (inf, "running one thread: %d/%d", inf->pid, thread->tid);
inf_set_threads_resume_sc (inf, thread, 0);
}
if (step)
{
step_thread = inf_tid_to_thread (inf, tid);
- assert (step_thread);
- inf_debug (inf, "stepping thread: %d/%d", inf->pid, step_thread->tid);
+ if (! step_thread)
+ warning ("Can't step thread id %d: no such thread.", tid);
+ else
+ inf_debug (inf, "stepping thread: %d/%d", inf->pid, step_thread->tid);
}
if (step_thread != inf->step_thread)
inf_set_step_thread (inf, step_thread);
{
proc_debug (task, "terminating...");
task_terminate (task->port);
- task->port = MACH_PORT_NULL;
- inf_validate_procs (current_inferior); /* Clear out the thread list &c */
+ inf_set_pid (current_inferior, -1);
}
target_mourn_inferior ();
}
/* Fork an inferior process, and start debugging it. */
/* Set INFERIOR_PID to the first thread available in the child, if any. */
-static void
-pick_first_thread ()
+static int
+inf_pick_first_thread ()
{
if (current_inferior->task && current_inferior->threads)
/* The first thread. */
- inferior_pid = current_inferior->threads->tid;
+ return current_inferior->threads->tid;
else
/* What may be the next thread. */
- inferior_pid = next_thread_id;
+ return next_thread_id;
}
static struct inf *
{
/* We're in the child; make this process stop as soon as it execs. */
inf_debug (inf, "tracing self");
- ptrace (PTRACE_TRACEME, 0, 0, 0);
+ if (ptrace (PTRACE_TRACEME) != 0)
+ error ("ptrace (PTRACE_TRACEME) failed!");
}
- void attach_to_child (int pid)
+ int attach_to_child (int pid)
{
/* Attach to the now stopped child, which is actually a shell... */
inf_debug (inf, "attaching to child: %d", pid);
inf_attach (inf, pid);
- pick_first_thread ();
attach_flag = 0;
push_target (&gnu_ops);
/* Now let the child run again, knowing that it will stop immediately
because of the ptrace. */
inf_resume (inf);
+ inferior_pid = inf_pick_first_thread ();
+
+ startup_inferior (inf->pending_execs);
- startup_inferior (pid, inf->pending_execs);
+ return inferior_pid;
}
inf_debug (inf, "creating inferior");
inf_attach (inf, pid);
inf_update_procs (inf);
- pick_first_thread ();
+ inferior_pid = inf_pick_first_thread ();
attach_flag = 1;
push_target (&gnu_ops);
/* 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_task_sc (inf);
+
+#if 0 /* Do we need this? */
+ renumber_threads (0); /* Give our threads reasonable names. */
+#endif
}
\f
/* Take a program previously attached to and detaches it.
struct obstack region_obstack;
/*
- * Write inferior task's LEN bytes from ADDR and copy it to MYADDR
- * in gdb's address space.
+ * Write gdb's LEN bytes from MYADDR and copy it to ADDR
+ * in inferior task's address space.
*/
int
gnu_write_inferior (task, addr, myaddr, length)
extern void gnu_store_registers (int regno);
extern void gnu_fetch_registers (int regno);
-struct target_ops gnu_ops = {
- "GNU", /* to_shortname */
- "GNU Hurd process", /* to_longname */
- "GNU Hurd process", /* to_doc */
- gnu_open, /* to_open */
- 0, /* to_close */
- gnu_attach, /* to_attach */
- gnu_detach, /* to_detach */
- gnu_resume, /* to_resume */
- gnu_wait, /* to_wait */
- gnu_fetch_registers, /* to_fetch_registers */
- gnu_store_registers, /* to_store_registers */
- gnu_prepare_to_store, /* to_prepare_to_store */
- gnu_xfer_memory, /* to_xfer_memory */
- 0, /* to_files_info */
- memory_insert_breakpoint, /* to_insert_breakpoint */
- memory_remove_breakpoint, /* to_remove_breakpoint */
- gnu_terminal_init_inferior, /* to_terminal_init */
- terminal_inferior, /* to_terminal_inferior */
- terminal_ours_for_output, /* to_terminal_ours_for_output */
- terminal_ours, /* to_terminal_ours */
- child_terminal_info, /* to_terminal_info */
- gnu_kill_inferior, /* to_kill */
- 0, /* to_load */
- 0, /* to_lookup_symbol */
-
- gnu_create_inferior, /* to_create_inferior */
- gnu_mourn_inferior, /* to_mourn_inferior */
- gnu_can_run, /* to_can_run */
- 0, /* to_notice_signals */
- gnu_thread_alive, /* to_thread_alive */
- gnu_stop, /* to_stop */
- process_stratum, /* to_stratum */
- 0, /* to_next */
- 1, /* to_has_all_memory */
- 1, /* to_has_memory */
- 1, /* to_has_stack */
- 1, /* to_has_registers */
- 1, /* to_has_execution */
- 0, /* sections */
- 0, /* sections_end */
- OPS_MAGIC /* to_magic */
-};
+struct target_ops gnu_ops ;
+
+static void
+init_gnu_ops(void)
+{
+ gnu_ops.to_shortname = "GNU"; /* to_shortname */
+ gnu_ops.to_longname = "GNU Hurd process"; /* to_longname */
+ gnu_ops.to_doc = "GNU Hurd process"; /* to_doc */
+ gnu_ops.to_open = gnu_open; /* to_open */
+ gnu_ops.to_close = 0; /* to_close */
+ gnu_ops.to_attach = gnu_attach; /* to_attach */
+ gnu_ops.to_detach = gnu_detach; /* to_detach */
+ gnu_ops.to_resume = gnu_resume; /* to_resume */
+ gnu_ops.to_wait = gnu_wait; /* to_wait */
+ gnu_ops.to_fetch_registers = gnu_fetch_registers; /* to_fetch_registers */
+ gnu_ops.to_store_registers = gnu_store_registers; /* to_store_registers */
+ gnu_ops.to_prepare_to_store = gnu_prepare_to_store; /* to_prepare_to_store */
+ gnu_ops.to_xfer_memory = gnu_xfer_memory; /* to_xfer_memory */
+ gnu_ops.to_files_info = 0; /* to_files_info */
+ gnu_ops.to_insert_breakpoint = memory_insert_breakpoint;
+ gnu_ops.to_remove_breakpoint = memory_remove_breakpoint;
+ gnu_ops.to_terminal_init = gnu_terminal_init_inferior;
+ gnu_ops.to_terminal_inferior = terminal_inferior;
+ gnu_ops.to_terminal_ours_for_output = terminal_ours_for_output;
+ gnu_ops.to_terminal_ours = terminal_ours;
+ gnu_ops.to_terminal_info = child_terminal_info;
+ gnu_ops.to_kill = gnu_kill_inferior; /* to_kill */
+ gnu_ops.to_load = 0; /* to_load */
+ gnu_ops.to_lookup_symbol = 0; /* to_lookup_symbol */
+ gnu_ops.to_create_inferior = gnu_create_inferior; /* to_create_inferior */
+ gnu_ops.to_mourn_inferior = gnu_mourn_inferior; /* to_mourn_inferior */
+ gnu_ops.to_can_run = gnu_can_run; /* to_can_run */
+ gnu_ops.to_notice_signals = 0; /* to_notice_signals */
+ gnu_ops.to_thread_alive = gnu_thread_alive;/* to_thread_alive */
+ gnu_ops.to_stop = gnu_stop; /* to_stop */
+ gnu_ops.to_stratum = process_stratum; /* to_stratum */
+ gnu_ops.DONT_USE = 0; /* to_next */
+ gnu_ops.to_has_all_memory = 1; /* to_has_all_memory */
+ gnu_ops.to_has_memory = 1; /* to_has_memory */
+ gnu_ops.to_has_stack = 1; /* to_has_stack */
+ gnu_ops.to_has_registers = 1; /* to_has_registers */
+ gnu_ops.to_has_execution = 1; /* to_has_execution */
+ gnu_ops.to_sections = 0; /* sections */
+ gnu_ops.to_sections_end = 0; /* sections_end */
+ gnu_ops.to_magic = OPS_MAGIC ; /* to_magic */
+} /* init_gnu_ops */
\f
+/* Return printable description of proc. */
char *proc_string (struct proc *proc)
{
static char tid_str[80];
sprintf (tid_str, "process %d", proc->inf->pid);
else
sprintf (tid_str, "thread %d.%d",
- proc->inf->pid,
- pid_to_thread_id (proc->tid));
+ proc->inf->pid, pid_to_thread_id (proc->tid));
return tid_str;
}
struct cmd_list_element *set_task_cmd_list = 0;
struct cmd_list_element *show_task_cmd_list = 0;
+/* User thread commands. */
+
+/* Commands with a prefix of `set/show thread'. */
+extern struct cmd_list_element *thread_cmd_list;
+struct cmd_list_element *set_thread_cmd_list = NULL;
+struct cmd_list_element *show_thread_cmd_list = NULL;
+
+/* Commands with a prefix of `set/show thread default'. */
+struct cmd_list_element *set_thread_default_cmd_list = NULL;
+struct cmd_list_element *show_thread_default_cmd_list = NULL;
+
+static void
+set_thread_cmd (char *args, int from_tty)
+{
+ printf_unfiltered ("\"set thread\" must be followed by the name of a thread
+property, or \"default\".\n");
+}
+
+static void
+show_thread_cmd (char *args, int from_tty)
+{
+ printf_unfiltered ("\"show thread\" must be followed by the name of a thread property, or \"default\".\n");
+}
+
+static void
+set_thread_default_cmd (char *args, int from_tty)
+{
+ printf_unfiltered ("\"set thread default\" must be followed by the name of a thread property.\n");
+}
-extern struct cmd_list_element *set_thread_default_cmd_list;
-extern struct cmd_list_element *show_thread_default_cmd_list;
+static void
+show_thread_default_cmd (char *args, int from_tty)
+{
+ printf_unfiltered ("\"show thread default\" must be followed by the name of a thread property.\n");
+}
+
+static int
+parse_int_arg (char *args, char *cmd_prefix)
+{
+ if (args)
+ {
+ char *arg_end;
+ int val = strtoul (args, &arg_end, 10);
+ if (*args && *arg_end == '\0')
+ return val;
+ }
+ error ("Illegal argument for \"%s\" command, should be an integer.", cmd_prefix);
+}
static int
_parse_bool_arg (char *args, char *t_val, char *f_val, char *cmd_prefix)
return thread;
}
+/* Returns the current inferior, but signals an error if it has no task. */
+static struct inf *
+active_inf ()
+{
+ struct inf *inf = cur_inf ();
+ if (! inf->task)
+ error ("No current process.");
+ return inf;
+}
+\f
static void
set_task_pause_cmd (char *args, int from_tty)
{
: (inf->pause_sc == 0 ? "won't be" : "will be"));
}
+static void
+set_task_detach_sc_cmd (char *args, int from_tty)
+{
+ cur_inf ()->detach_sc = parse_int_arg (args, "set task detach-suspend-count");
+}
+
+static void
+show_task_detach_sc_cmd (char *args, int from_tty)
+{
+ check_empty (args, "show task detach-suspend-count");
+ printf_unfiltered ("The inferior task will be left with a suspend count of %d when detaching.\n",
+ cur_inf ()->detach_sc);
+}
+\f
static void
set_thread_default_pause_cmd (char *args, int from_tty)
{
check_empty (args, "show thread default pause");
printf_unfiltered ("New threads %s suspended while gdb has control%s.\n",
sc ? "are" : "aren't",
- !sc && inf->pause_sc ? "(but the task is)" : "");
+ !sc && inf->pause_sc ? " (but the task is)" : "");
}
static void
inf->default_thread_run_sc == 0 ? "are" : "aren't");
}
+static void
+set_thread_default_detach_sc_cmd (char *args, int from_tty)
+{
+ cur_inf ()->default_thread_detach_sc =
+ parse_int_arg (args, "set thread default detach-suspend-count");
+}
+
+static void
+show_thread_default_detach_sc_cmd (char *args, int from_tty)
+{
+ check_empty (args, "show thread default detach-suspend-count");
+ printf_unfiltered ("New threads will get a detach-suspend-count of %d.\n",
+ cur_inf ()->default_thread_detach_sc);
+}
+\f
/* Steal a send right called NAME in the inferior task, and make it PROC's
saved exception port. */
static void
proc_string (proc), strerror (err));
}
}
-
+\f
static void
set_task_exc_port_cmd (char *args, int from_tty)
{
steal_exc_port (inf->task, parse_and_eval_address (args));
}
-static void
-set_signals_cmd (char *args, int from_tty)
-{
- int trace;
- struct inf *inf = cur_inf ();
-
- inf->want_signals = parse_bool_arg (args, "set signals");
-
- if (inf->task && inf->want_signals != inf->traced)
- /* Make this take effect immediately in a running process. */
- inf_set_traced (inf, inf->want_signals);
-}
-
-static void
-show_signals_cmd (char *args, int from_tty)
-{
- struct inf *inf = cur_inf ();
- check_empty (args, "show signals");
- printf_unfiltered ("The inferior process's signals %s intercepted.\n",
- inf->task
- ? (inf->traced ? "are" : "aren't")
- : (inf->want_signals ? "will be" : "won't be"));
-}
-
static void
set_stopped_cmd (char *args, int from_tty)
{
static void
show_stopped_cmd (char *args, int from_tty)
{
- struct inf *inf = cur_inf ();
+ struct inf *inf = active_inf ();
check_empty (args, "show stopped");
- if (! inf->task)
- error ("No current process.");
printf_unfiltered ("The inferior process %s stopped.\n",
inf->stopped ? "is" : "isn't");
}
static void
show_sig_thread_cmd (char *args, int from_tty)
{
- struct inf *inf = cur_inf ();
+ struct inf *inf = active_inf ();
check_empty (args, "show signal-thread");
- if (! inf->task)
- error ("No current process.");
if (inf->signal_thread)
printf_unfiltered ("The signal thread is %s.\n",
proc_string (inf->signal_thread));
else
printf_unfiltered ("There is no signal thread.\n");
}
+\f
+static void
+set_signals_cmd (char *args, int from_tty)
+{
+ int trace;
+ struct inf *inf = cur_inf ();
+
+ inf->want_signals = parse_bool_arg (args, "set signals");
+
+ if (inf->task && inf->want_signals != inf->traced)
+ /* Make this take effect immediately in a running process. */
+ inf_set_traced (inf, inf->want_signals);
+}
+
+static void
+show_signals_cmd (char *args, int from_tty)
+{
+ struct inf *inf = cur_inf ();
+ check_empty (args, "show signals");
+ printf_unfiltered ("The inferior process's signals %s intercepted.\n",
+ inf->task
+ ? (inf->traced ? "are" : "aren't")
+ : (inf->want_signals ? "will be" : "won't be"));
+}
static void
set_exceptions_cmd (char *args, int from_tty)
? (inf->want_exceptions ? "are" : "aren't")
: (inf->want_exceptions ? "will be" : "won't be"));
}
-
+\f
static void
set_task_cmd (char *args, int from_tty)
{
show_stopped_cmd (0, from_tty);
show_sig_thread_cmd (0, from_tty);
}
+
+ if (inf->detach_sc != 0)
+ show_task_detach_sc_cmd (0, from_tty);
+ if (inf->default_thread_detach_sc != 0)
+ show_thread_default_detach_sc_cmd (0, from_tty);
+}
+\f
+static void
+set_noninvasive_cmd (char *args, int from_tty)
+{
+ /* Invert the sense of the arg for each component. */
+ char *inv_args = parse_bool_arg (args, "set noninvasive") ? "off" : "on";
+
+ set_task_pause_cmd (inv_args, from_tty);
+ set_signals_cmd (inv_args, from_tty);
+ set_exceptions_cmd (inv_args, from_tty);
+}
+\f
+static void
+info_port_rights (char *args, mach_port_type_t only)
+{
+ struct inf *inf = active_inf ();
+ value_ptr vmark = value_mark ();
+
+ if (args)
+ /* Explicit list of port rights. */
+ {
+ while (*args)
+ {
+ value_ptr val = parse_to_comma_and_eval (&args);
+ long right = value_as_long (val);
+ error_t err =
+ print_port_info (right, 0, inf->task->port, PORTINFO_DETAILS,
+ stdout);
+ if (err)
+ error ("%ld: %s.", right, strerror (err));
+ }
+ }
+ else
+ /* Print all of them. */
+ {
+ error_t err =
+ print_task_ports_info (inf->task->port, only, PORTINFO_DETAILS,
+ stdout);
+ if (err)
+ error ("%s.", strerror (err));
+ }
+
+ value_free_to_mark (vmark);
}
+static void
+info_send_rights_cmd (char *args, int from_tty)
+{
+ info_port_rights (args, MACH_PORT_TYPE_SEND);
+}
+static void
+info_recv_rights_cmd (char *args, int from_tty)
+{
+ info_port_rights (args, MACH_PORT_TYPE_RECEIVE);
+}
+static void
+info_port_sets_cmd (char *args, int from_tty)
+{
+ info_port_rights (args, MACH_PORT_TYPE_PORT_SET);
+}
+static void
+info_dead_names_cmd (char *args, int from_tty)
+{
+ info_port_rights (args, MACH_PORT_TYPE_DEAD_NAME);
+}
+static void
+info_port_rights_cmd (char *args, int from_tty)
+{
+ info_port_rights (args, ~0);
+}
+\f
static void add_task_commands ()
{
add_cmd ("pause", class_run, set_thread_default_pause_cmd,
"Show whether new threads are allowed to run (once gdb has noticed
them).",
&show_thread_default_cmd_list);
+ add_cmd ("detach-suspend-count", class_run, set_thread_default_detach_sc_cmd,
+ "Set the default detach-suspend-count value for new threads.",
+ &set_thread_default_cmd_list);
+ add_cmd ("detach-suspend-count", no_class, show_thread_default_detach_sc_cmd,
+ "Show the default detach-suspend-count value for new threads.",
+ &show_thread_default_cmd_list);
add_cmd ("signals", class_run, set_signals_cmd,
"Set whether the inferior process's signals will be intercepted.\n"
"Show whether exceptions in the inferior process will be trapped.",
&showlist);
-
-
add_prefix_cmd ("task", no_class, set_task_cmd,
"Command prefix for setting task attributes.",
&set_task_cmd_list, "set task ", 0, &setlist);
add_cmd ("pause", no_class, show_task_pause_cmd,
"Show whether the task is suspended while gdb has control.",
&show_task_cmd_list);
+ add_cmd ("detach-suspend-count", class_run, set_task_detach_sc_cmd,
+ "Set the suspend count will leave on the thread when detaching.",
+ &set_task_cmd_list);
+ add_cmd ("detach-suspend-count", no_class, show_task_detach_sc_cmd,
+ "Show the suspend count will leave on the thread when detaching.",
+ &show_task_cmd_list);
add_cmd ("exception-port", no_class, set_task_exc_port_cmd,
"Set the task exception port to which we forward exceptions.\n"
&set_task_cmd_list);
add_alias_cmd ("excp", "exception-port", no_class, 1, &set_task_cmd_list);
add_alias_cmd ("exc-port", "exception-port", no_class, 1, &set_task_cmd_list);
+
+ /* A convenient way of turning on all options require to noninvasively
+ debug running tasks. */
+ add_cmd ("noninvasive", no_class, set_noninvasive_cmd,
+ "Set task options so that we interfere as little as possible.\n"
+ "This is the same as setting `task pause', `exceptions', and"
+ "`signals' to the opposite value.",
+ &setlist);
+
+ /* Commands to show information about the task's ports. */
+ add_cmd ("send-rights", class_info, info_send_rights_cmd,
+ "Show information about the task's send rights",
+ &infolist);
+ add_cmd ("receive-rights", class_info, info_recv_rights_cmd,
+ "Show information about the task's receive rights",
+ &infolist);
+ add_cmd ("port-rights", class_info, info_send_rights_cmd,
+ "Show information about the task's port rights",
+ &infolist);
+ add_cmd ("port-sets", class_info, info_port_sets_cmd,
+ "Show information about the task's port sets",
+ &infolist);
+ add_cmd ("dead-names", class_info, info_dead_names_cmd,
+ "Show information about the task's dead names",
+ &infolist);
+ add_info_alias ("ports", "port-rights", 1);
+ add_info_alias ("port", "port-rights", 1);
+ add_info_alias ("psets", "port-sets", 1);
}
\f
-/* User thread commands. */
-
-extern struct cmd_list_element *set_thread_cmd_list;
-extern struct cmd_list_element *show_thread_cmd_list;
static void
set_thread_pause_cmd (char *args, int from_tty)
printf_unfiltered ("Thread %s %s suspended while gdb has control%s.\n",
proc_string (thread),
sc ? "is" : "isn't",
- !sc && thread->inf->pause_sc ? "(but the task is)" : "");
+ !sc && thread->inf->pause_sc ? " (but the task is)" : "");
}
static void
{
struct proc *thread = cur_thread ();
check_empty (args, "show thread run");
- printf_unfiltered ("Thread %s allowed to run.",
+ printf_unfiltered ("Thread %s %s allowed to run.",
proc_string (thread),
thread->run_sc == 0 ? "is" : "isn't");
}
+static void
+set_thread_detach_sc_cmd (char *args, int from_tty)
+{
+ cur_thread ()->detach_sc = parse_int_arg (args, "set thread detach-suspend-count");
+}
+
+static void
+show_thread_detach_sc_cmd (char *args, int from_tty)
+{
+ struct proc *thread = cur_thread ();
+ check_empty (args, "show thread detach-suspend-count");
+ printf_unfiltered ("Thread %s will be left with a suspend count of %d when detaching.\n",
+ proc_string (thread),
+ thread->detach_sc);
+}
+
static void
set_thread_exc_port_cmd (char *args, int from_tty)
{
steal_exc_port (thread, parse_and_eval_address (args));
}
-static void
-set_thread_cmd (char *args, int from_tty)
-{
- printf_unfiltered ("\"set thread\" must be followed by the name of a thread property.\n");
-}
-
+#if 0
static void
show_thread_cmd (char *args, int from_tty)
{
+ struct proc *thread = cur_thread ();
check_empty (args, "show thread");
show_thread_run_cmd (0, from_tty);
show_thread_pause_cmd (0, from_tty);
+ if (thread->detach_sc != 0)
+ show_thread_detach_sc_cmd (0, from_tty);
+}
+#endif
+
+static void
+thread_takeover_sc_cmd (char *args, int from_tty)
+{
+ struct proc *thread = cur_thread ();
+ thread_basic_info_data_t _info;
+ thread_basic_info_t info = &_info;
+ mach_msg_type_number_t info_len = THREAD_BASIC_INFO_COUNT;
+ error_t err =
+ thread_info (thread->port, THREAD_BASIC_INFO, (int *)&info, &info_len);
+ if (err)
+ error ("%s.", strerror (err));
+ thread->sc = info->suspend_count;
+ if (from_tty)
+ printf_unfiltered ("Suspend count was %d.\n", thread->sc);
+ if (info != &_info)
+ vm_deallocate (mach_task_self (), (vm_address_t)info, info_len * sizeof (int));
}
add_thread_commands ()
{
+ add_prefix_cmd ("thread", no_class, set_thread_cmd,
+ "Command prefix for setting thread properties.",
+ &set_thread_cmd_list, "set thread ", 0, &setlist);
+ add_prefix_cmd ("default", no_class, show_thread_cmd,
+ "Command prefix for setting default thread properties.",
+ &set_thread_default_cmd_list, "set thread default ", 0,
+ &set_thread_cmd_list);
+ add_prefix_cmd ("thread", no_class, set_thread_default_cmd,
+ "Command prefix for showing thread properties.",
+ &show_thread_cmd_list, "show thread ", 0, &showlist);
+ add_prefix_cmd ("default", no_class, show_thread_default_cmd,
+ "Command prefix for showing default thread properties.",
+ &show_thread_default_cmd_list, "show thread default ", 0,
+ &show_thread_cmd_list);
+
add_cmd ("pause", class_run, set_thread_pause_cmd,
"Set whether the current thread is suspended while gdb has control.\n"
"A value of \"on\" takes effect immediately, otherwise nothing\n"
"Show whether the current thread is allowed to run.",
&show_thread_cmd_list);
+ add_cmd ("detach-suspend-count", class_run, set_thread_detach_sc_cmd,
+ "Set the suspend count will leave on the thread when detaching.\n"
+ "Note that this is relative to suspend count when gdb noticed the thread;\n"
+ "use the `thread takeover-suspend-count' to force it to an absolute value.",
+ &set_thread_cmd_list);
+ add_cmd ("detach-suspend-count", no_class, show_thread_detach_sc_cmd,
+ "Show the suspend count will leave on the thread when detaching."
+ "Note that this is relative to suspend count when gdb noticed the thread;\n"
+ "use the `thread takeover-suspend-count' to force it to an absolute value.",
+ &show_thread_cmd_list);
+
add_cmd ("exception-port", no_class, set_thread_exc_port_cmd,
"Set the exception port to which we forward exceptions for the\n"
"current thread, overriding the task exception port.\n"
&set_thread_cmd_list);
add_alias_cmd ("excp", "exception-port", no_class, 1, &set_thread_cmd_list);
add_alias_cmd ("exc-port", "exception-port", no_class, 1, &set_thread_cmd_list);
+
+ add_cmd ("takeover-suspend-count", no_class, thread_takeover_sc_cmd,
+ "Force the threads absolute suspend-count to be gdb's.\n"
+ "Prior to giving this command, gdb's thread suspend-counts are relative to\n"
+ "the thread's initial suspend-count when gdb notices the threads.",
+ &thread_cmd_list);
}
\f
void
_initialize_gnu_nat ()
{
proc_server = getproc ();
-
+ init_gnu_ops() ;
add_target (&gnu_ops);
-
add_task_commands ();
add_thread_commands ();
projects / deliverable / binutils-gdb.git / blobdiff