/* Native debugging support for GNU/Linux (LWP layer).
- Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
- Free Software Foundation, Inc.
+ Copyright (C) 2000-2012 Free Software Foundation, Inc.
This file is part of GDB.
#include <signal.h>
+struct arch_lwp_info;
+
+/* 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
+};
+
/* Structure describing an LWP. This is public only for the purposes
of ALL_LWPS; target-specific code should generally not access it
directly. */
didn't try to let the LWP run. */
int resumed;
+ /* The last resume GDB requested on this thread. */
+ enum resume_kind last_resume_kind;
+
/* If non-zero, a pending wait status. */
int status;
/* Non-zero if we were stepping this LWP. */
int step;
- /* Non-zero si_signo if this LWP stopped with a trap. si_addr may
- be the address of a hardware watchpoint. */
- struct siginfo siginfo;
-
/* STOPPED_BY_WATCHPOINT is non-zero if this LWP stopped with a data
watchpoint trap. */
int stopped_by_watchpoint;
- TARGET_WAITKIND_SYSCALL_RETURN */
int syscall_state;
+ /* The processor core this LWP was last seen on. */
+ int core;
+
+ /* Arch-specific additions. */
+ struct arch_lwp_info *arch_private;
+
/* Next LWP in list. */
struct lwp_info *next;
};
native target is active. */
extern struct lwp_info *lwp_list;
-/* Iterate over the PTID each active thread (light-weight process). There
- must be at least one. */
-#define ALL_LWPS(LP, PTID) \
- for ((LP) = lwp_list, (PTID) = (LP)->ptid; \
+/* Iterate over each active thread (light-weight process). */
+#define ALL_LWPS(LP) \
+ for ((LP) = lwp_list; \
(LP) != NULL; \
- (LP) = (LP)->next, (PTID) = (LP) ? (LP)->ptid : (PTID))
+ (LP) = (LP)->next)
#define GET_LWP(ptid) ptid_get_lwp (ptid)
#define GET_PID(ptid) ptid_get_pid (ptid)
int thread_db_attach_lwp (ptid_t ptid);
-/* Find process PID's pending signal set from /proc/pid/status. */
-void linux_proc_pending_signals (int pid, sigset_t *pending, sigset_t *blocked, sigset_t *ignored);
+/* Return the set of signals used by the threads library. */
+extern void lin_thread_get_thread_signals (sigset_t *mask);
-/* Return the TGID of LWPID from /proc/pid/status. Returns -1 if not
- found. */
-extern int linux_proc_get_tgid (int lwpid);
+/* Find process PID's pending signal set from /proc/pid/status. */
+void linux_proc_pending_signals (int pid, sigset_t *pending,
+ sigset_t *blocked, sigset_t *ignored);
/* linux-nat functions for handling fork events. */
extern void linux_enable_event_reporting (ptid_t ptid);
extern int lin_lwp_attach_lwp (ptid_t ptid);
+extern void linux_stop_lwp (struct lwp_info *lwp);
+
/* Iterator function for lin-lwp's lwp list. */
struct lwp_info *iterate_over_lwps (ptid_t filter,
int (*callback) (struct lwp_info *,
void *),
void *data);
+typedef int (*linux_nat_iterate_watchpoint_lwps_ftype) (struct lwp_info *lwp,
+ void *arg);
+
+extern void linux_nat_iterate_watchpoint_lwps
+ (linux_nat_iterate_watchpoint_lwps_ftype callback, void *callback_data);
+
/* Create a prototype generic GNU/Linux target. The client can
override it with local methods. */
struct target_ops * linux_target (void);
void linux_nat_add_target (struct target_ops *);
/* Register a method to call whenever a new thread is attached. */
-void linux_nat_set_new_thread (struct target_ops *, void (*) (ptid_t));
+void linux_nat_set_new_thread (struct target_ops *, void (*) (struct lwp_info *));
/* Register a method that converts a siginfo object between the layout
that ptrace returns, and the layout in the architecture of the
inferior. */
void linux_nat_set_siginfo_fixup (struct target_ops *,
- int (*) (struct siginfo *,
+ int (*) (siginfo_t *,
gdb_byte *,
int));
+/* Register a method to call prior to resuming a thread. */
+
+void linux_nat_set_prepare_to_resume (struct target_ops *,
+ void (*) (struct lwp_info *));
+
/* Update linux-nat internal state when changing from one fork
to another. */
void linux_nat_switch_fork (ptid_t new_ptid);
-/* Return the saved siginfo associated with PTID. */
-struct siginfo *linux_nat_get_siginfo (ptid_t ptid);
+/* Store the saved siginfo associated with PTID in *SIGINFO.
+ Return 1 if it was retrieved successfully, 0 otherwise (*SIGINFO is
+ uninitialized in such case). */
+int linux_nat_get_siginfo (ptid_t ptid, siginfo_t *siginfo);
+
+/* Set alternative SIGTRAP-like events recognizer. */
+void linux_nat_set_status_is_event (struct target_ops *t,
+ int (*status_is_event) (int status));