/* 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>
#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_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);
+ 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 char *
+gnu_pid_to_exec_file ()
+{
+ error ("to_pid_to_exec_file target function not implemented");
+ return NULL;
+}
+
+
static int
gnu_thread_alive (int tid)
{
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_post_attach = NULL;
+ gnu_ops.to_require_attach = NULL; /* to_require_attach */
+ gnu_ops.to_detach = gnu_detach; /* to_detach */
+ gnu_ops.to_require_detach = NULL; /* to_require_detach */
+ gnu_ops.to_resume = gnu_resume; /* to_resume */
+ gnu_ops.to_wait = gnu_wait; /* to_wait */
+ gnu_ops.to_post_wait = NULL; /* to_post_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_post_startup_inferior = NULL; /* to_post_startup_inferior */
+ gnu_ops.to_acknowledge_created_inferior = NULL; /* to_acknowledge_created_inferior */
+ gnu_ops.to_clone_and_follow_inferior = NULL; /* to_clone_and_follow_inferior */
+ gnu_ops.to_post_follow_inferior_by_clone = NULL; /* to_post_follow_inferior_by_clone */
+ gnu_ops.to_insert_fork_catchpoint = NULL;
+ gnu_ops.to_remove_fork_catchpoint = NULL;
+ gnu_ops.to_insert_vfork_catchpoint = NULL;
+ gnu_ops.to_remove_vfork_catchpoint = NULL;
+ gnu_ops.to_has_forked = NULL; /* to_has_forked */
+ gnu_ops.to_has_vforked = NULL; /* to_has_vforked */
+ gnu_ops.to_can_follow_vfork_prior_to_exec = NULL;
+ gnu_ops.to_post_follow_vfork = NULL; /* to_post_follow_vfork */
+ gnu_ops.to_insert_exec_catchpoint = NULL;
+ gnu_ops.to_remove_exec_catchpoint = NULL;
+ gnu_ops.to_has_execd = NULL;
+ gnu_ops.to_reported_exec_events_per_exec_call = NULL;
+ gnu_ops.to_has_exited = NULL;
+ 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_pid_to_exec_file = gnu_pid_to_exec_file; /* to_pid_to_exec_file */
+ gnu_ops.to_core_file_to_sym_file = NULL;
+ 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)
_initialize_gnu_nat ()
{
proc_server = getproc ();
-
+ init_gnu_ops() ;
add_target (&gnu_ops);
-
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