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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-6.8/] [gdb/] [linux-nat.h] - Blame information for rev 840

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1 24 jeremybenn
/* Native debugging support for GNU/Linux (LWP layer).
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   Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
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   Free Software Foundation, Inc.
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   This file is part of GDB.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
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#include "target.h"
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#include <signal.h>
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/* Structure describing an LWP.  This is public only for the purposes
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   of ALL_LWPS; target-specific code should generally not access it
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   directly.  */
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struct lwp_info
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{
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  /* The process id of the LWP.  This is a combination of the LWP id
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     and overall process id.  */
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  ptid_t ptid;
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  /* Non-zero if this LWP is cloned.  In this context "cloned" means
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     that the LWP is reporting to its parent using a signal other than
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     SIGCHLD.  */
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  int cloned;
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  /* Non-zero if we sent this LWP a SIGSTOP (but the LWP didn't report
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     it back yet).  */
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  int signalled;
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  /* Non-zero if this LWP is stopped.  */
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  int stopped;
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  /* Non-zero if this LWP will be/has been resumed.  Note that an LWP
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     can be marked both as stopped and resumed at the same time.  This
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     happens if we try to resume an LWP that has a wait status
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     pending.  We shouldn't let the LWP run until that wait status has
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     been processed, but we should not report that wait status if GDB
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     didn't try to let the LWP run.  */
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  int resumed;
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  /* If non-zero, a pending wait status.  */
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  int status;
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  /* Non-zero if we were stepping this LWP.  */
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  int step;
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  /* Non-zero si_signo if this LWP stopped with a trap.  si_addr may
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     be the address of a hardware watchpoint.  */
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  struct siginfo siginfo;
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  /* If WAITSTATUS->KIND != TARGET_WAITKIND_SPURIOUS, the waitstatus
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     for this LWP's last event.  This may correspond to STATUS above,
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     or to a local variable in lin_lwp_wait.  */
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  struct target_waitstatus waitstatus;
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  /* Next LWP in list.  */
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  struct lwp_info *next;
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};
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/* The global list of LWPs, for ALL_LWPS.  Unlike the threads list,
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   there is always at least one LWP on the list while the GNU/Linux
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   native target is active.  */
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extern struct lwp_info *lwp_list;
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/* Iterate over the PTID each active thread (light-weight process).  There
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   must be at least one.  */
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#define ALL_LWPS(LP, PTID)                                              \
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  for ((LP) = lwp_list, (PTID) = (LP)->ptid;                            \
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       (LP) != NULL;                                                    \
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       (LP) = (LP)->next, (PTID) = (LP) ? (LP)->ptid : (PTID))
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/* Attempt to initialize libthread_db.  */
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void check_for_thread_db (void);
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/* Tell the thread_db layer what native target operations to use.  */
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void thread_db_init (struct target_ops *);
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/* Find process PID's pending signal set from /proc/pid/status.  */
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void linux_proc_pending_signals (int pid, sigset_t *pending, sigset_t *blocked, sigset_t *ignored);
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/* linux-nat functions for handling fork events.  */
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extern void linux_enable_event_reporting (ptid_t ptid);
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extern int lin_lwp_attach_lwp (ptid_t ptid);
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/* Iterator function for lin-lwp's lwp list.  */
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struct lwp_info *iterate_over_lwps (int (*callback) (struct lwp_info *,
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                                                     void *),
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                                    void *data);
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/* Create a prototype generic GNU/Linux target.  The client can
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   override it with local methods.  */
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struct target_ops * linux_target (void);
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/* Create a generic GNU/Linux target using traditional
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   ptrace register access.  */
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struct target_ops *
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linux_trad_target (CORE_ADDR (*register_u_offset)(struct gdbarch *, int, int));
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/* Register the customized GNU/Linux target.  This should be used
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   instead of calling add_target directly.  */
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void linux_nat_add_target (struct target_ops *);
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/* Register a method to call whenever a new thread is attached.  */
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void linux_nat_set_new_thread (struct target_ops *, void (*) (ptid_t));
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/* Update linux-nat internal state when changing from one fork
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   to another.  */
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void linux_nat_switch_fork (ptid_t new_ptid);
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/* Return the saved siginfo associated with PTID.  */
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struct siginfo *linux_nat_get_siginfo (ptid_t ptid);

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