/* 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 "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);
int want_exceptions;
};
+
int __proc_pid (struct proc *proc)
{
return proc->inf->pid;
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)
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)
{
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. */
inf_tid_to_thread (struct inf *inf, int tid)
{
struct proc *thread = inf->threads;
+
while (thread)
if (thread->tid == tid)
return thread;
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)
{
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. */
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);
/* Re-suspend the task. */
inf_suspend (inf);
+ 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)
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)
{
proc_debug (task, "terminating...");
task_terminate (task->port);
- inf_set_task (current_inferior, MACH_PORT_NULL);
+ 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 *
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 (pid, inf->pending_execs);
+ startup_inferior (inf->pending_execs);
- return pid;
+ 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);
time the user does a continue. */
inf_validate_stopped (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.
error ("to_stop target function not implemented");
}
+static void
+gnu_pid_to_exec_file ()
+{
+ error ("to_pid_to_exec_file target function not implemented");
+}
+
+
static int
gnu_thread_alive (int tid)
{
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_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)
{
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. */
-extern struct cmd_list_element *set_thread_default_cmd_list;
-extern struct cmd_list_element *show_thread_default_cmd_list;
+/* 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");
+}
+
+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)
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;
-extern struct cmd_list_element *thread_cmd_list;
static void
set_thread_pause_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)
{
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)
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"
_initialize_gnu_nat ()
{
proc_server = getproc ();
-
+ init_gnu_ops() ;
add_target (&gnu_ops);
-
add_task_commands ();
add_thread_commands ();
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