/* Native debugging support for GNU/Linux (LWP layer).
- Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
Free Software Foundation, Inc.
This file is part of GDB.
#include "target.h"
-/* Structure describing an LWP. */
+#include <signal.h>
+
+/* Structure describing an LWP. This is public only for the purposes
+ of ALL_LWPS; target-specific code should generally not access it
+ directly. */
struct lwp_info
{
/* 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;
+
+ /* Non-zero if we expect a duplicated SIGINT. */
+ int ignore_sigint;
+
/* If WAITSTATUS->KIND != TARGET_WAITKIND_SPURIOUS, the waitstatus
for this LWP's last event. This may correspond to STATUS above,
or to a local variable in lin_lwp_wait. */
struct lwp_info *next;
};
+/* The global list of LWPs, for ALL_LWPS. Unlike the threads list,
+ there is always at least one LWP on the list while the GNU/Linux
+ 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; \
+ (LP) != NULL; \
+ (LP) = (LP)->next, (PTID) = (LP) ? (LP)->ptid : (PTID))
+
+#define GET_LWP(ptid) ptid_get_lwp (ptid)
+#define GET_PID(ptid) ptid_get_pid (ptid)
+#define is_lwp(ptid) (GET_LWP (ptid) != 0)
+#define BUILD_LWP(lwp, pid) ptid_build (pid, lwp, 0)
+
/* Attempt to initialize libthread_db. */
void check_for_thread_db (void);
-/* Tell the thread_db layer what native target operations to use. */
-void thread_db_init (struct target_ops *);
+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);
/* 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, int verbose);
+extern int lin_lwp_attach_lwp (ptid_t ptid);
/* Iterator function for lin-lwp's lwp list. */
struct lwp_info *iterate_over_lwps (int (*callback) (struct lwp_info *,
instead of calling add_target directly. */
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));
+
+/* 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 *,
+ gdb_byte *,
+ int));
+
/* 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);