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-/* Interface between the debugger and target environments, including files
- and processes, shared between GDB and gdbserver.
-
- Copyright (C) 1990-2013 Free Software Foundation, Inc.
-
- Contributed by Cygnus Support. Written by John Gilmore.
-
- This file is part of GDB.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
-
-#ifndef TARGET_COMMON_H
-#define TARGET_COMMON_H
-
-#include "common-utils.h"
-#include "ptid.h"
-#include "gdb_signals.h"
-
-/* Ways to "resume" a thread. */
-
-enum resume_kind
-{
- /* Thread should continue. */
- resume_continue,
-
- /* Thread should single-step. */
- resume_step,
-
- /* Thread should be stopped. */
- resume_stop
-};
-
-/* Stuff for target_wait. */
-
-/* Generally, what has the program done? */
-enum target_waitkind
-{
- /* The program has exited. The exit status is in value.integer. */
- TARGET_WAITKIND_EXITED,
-
- /* The program has stopped with a signal. Which signal is in
- value.sig. */
- TARGET_WAITKIND_STOPPED,
-
- /* The program has terminated with a signal. Which signal is in
- value.sig. */
- TARGET_WAITKIND_SIGNALLED,
-
- /* The program is letting us know that it dynamically loaded something
- (e.g. it called load(2) on AIX). */
- TARGET_WAITKIND_LOADED,
-
- /* The program has forked. A "related" process' PTID is in
- value.related_pid. I.e., if the child forks, value.related_pid
- is the parent's ID. */
- TARGET_WAITKIND_FORKED,
-
- /* The program has vforked. A "related" process's PTID is in
- value.related_pid. */
- TARGET_WAITKIND_VFORKED,
-
- /* The program has exec'ed a new executable file. The new file's
- pathname is pointed to by value.execd_pathname. */
- TARGET_WAITKIND_EXECD,
-
- /* The program had previously vforked, and now the child is done
- with the shared memory region, because it exec'ed or exited.
- Note that the event is reported to the vfork parent. This is
- only used if GDB did not stay attached to the vfork child,
- otherwise, a TARGET_WAITKIND_EXECD or
- TARGET_WAITKIND_EXIT|SIGNALLED event associated with the child
- has the same effect. */
- TARGET_WAITKIND_VFORK_DONE,
-
- /* The program has entered or returned from a system call. On
- HP-UX, this is used in the hardware watchpoint implementation.
- The syscall's unique integer ID number is in value.syscall_id. */
- TARGET_WAITKIND_SYSCALL_ENTRY,
- TARGET_WAITKIND_SYSCALL_RETURN,
-
- /* Nothing happened, but we stopped anyway. This perhaps should be handled
- within target_wait, but I'm not sure target_wait should be resuming the
- inferior. */
- TARGET_WAITKIND_SPURIOUS,
-
- /* An event has occured, but we should wait again.
- Remote_async_wait() returns this when there is an event
- on the inferior, but the rest of the world is not interested in
- it. The inferior has not stopped, but has just sent some output
- to the console, for instance. In this case, we want to go back
- to the event loop and wait there for another event from the
- inferior, rather than being stuck in the remote_async_wait()
- function. sThis way the event loop is responsive to other events,
- like for instance the user typing. */
- TARGET_WAITKIND_IGNORE,
-
- /* The target has run out of history information,
- and cannot run backward any further. */
- TARGET_WAITKIND_NO_HISTORY,
-
- /* There are no resumed children left in the program. */
- TARGET_WAITKIND_NO_RESUMED
-};
-
-struct target_waitstatus
-{
- enum target_waitkind kind;
-
- /* Additional information about the event. */
- union
- {
- /* Exit status */
- int integer;
- /* Signal number */
- enum gdb_signal sig;
- /* Forked child pid */
- ptid_t related_pid;
- /* execd pathname */
- char *execd_pathname;
- /* Syscall number */
- int syscall_number;
- } value;
-};
-
-/* Options that can be passed to target_wait. */
-
-/* Return immediately if there's no event already queued. If this
- options is not requested, target_wait blocks waiting for an
- event. */
-#define TARGET_WNOHANG 1
-
-/* Prototypes */
-
-/* Return a pretty printed form of target_waitstatus.
- Space for the result is malloc'd, caller must free. */
-extern char *target_waitstatus_to_string (const struct target_waitstatus *);
-
-#endif /* TARGET_COMMON_H */