/* Native debugging support for GNU/Linux (LWP layer).
- Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
- Free Software Foundation, Inc.
+ Copyright (C) 2000-2013 Free Software Foundation, Inc.
This file is part of GDB.
#include <signal.h>
+struct arch_lwp_info;
+
/* 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;
+
+ /* On architectures where it is possible to know the data address of
+ a triggered watchpoint, STOPPED_DATA_ADDRESS_P is non-zero, and
+ STOPPED_DATA_ADDRESS contains such data address. Otherwise,
+ STOPPED_DATA_ADDRESS_P is false, and STOPPED_DATA_ADDRESS is
+ undefined. Only valid if STOPPED_BY_WATCHPOINT is true. */
+ int stopped_data_address_p;
+ CORE_ADDR stopped_data_address;
+
+ /* 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 target_waitstatus waitstatus;
+ /* Signal wether we are in a SYSCALL_ENTRY or
+ in a SYSCALL_RETURN event.
+ Values:
+ - TARGET_WAITKIND_SYSCALL_ENTRY
+ - 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)
/* 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);
+
+/* Return the set of signals used by the threads library. */
+extern void lin_thread_get_thread_signals (sigset_t *mask);
/* 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);
+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 int lin_lwp_attach_lwp (ptid_t ptid, int verbose);
+extern void linux_stop_lwp (struct lwp_info *lwp);
/* Iterator function for lin-lwp's lwp list. */
-struct lwp_info *iterate_over_lwps (int (*callback) (struct lwp_info *,
+struct lwp_info *iterate_over_lwps (ptid_t filter,
+ int (*callback) (struct lwp_info *,
void *),
void *data);
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 to call whenever a new fork is attached. */
+typedef void (linux_nat_new_fork_ftype) (struct lwp_info *parent,
+ pid_t child_pid);
+void linux_nat_set_new_fork (struct target_ops *ops,
+ linux_nat_new_fork_ftype *fn);
+
+/* Register a method to call whenever a process is killed or
+ detached. */
+typedef void (linux_nat_forget_process_ftype) (pid_t pid);
+void linux_nat_set_forget_process (struct target_ops *ops,
+ linux_nat_forget_process_ftype *fn);
+
+/* Call the method registered with the function above. PID is the
+ process to forget about. */
+void linux_nat_forget_process (pid_t pid);
+
+/* 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 (*) (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));
projects / deliverable / binutils-gdb.git / blobdiff