Sync from gcc mainline.

[deliverable/binutils-gdb.git] / gdb / linux-nat.h

diff --git a/gdb/linux-nat.h b/gdb/linux-nat.h
index 82cf51b9bf29106bd74d0ef604028065be572872..5aba089eaf3d20a703b0f7db9ed8607a0b3d375e 100644 (file)
--- a/gdb/linux-nat.h
+++ b/gdb/linux-nat.h
@@ -1,7 +1,7 @@
 /* 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, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
+   2010 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -20,7 +20,11 @@
 
 #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
 {
@@ -54,31 +58,81 @@ 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;
+
+  /* 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;
+
   /* Next LWP in list.  */
   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);
 
+/* Return the TGID of LWPID from /proc/pid/status.  Returns -1 if not
+   found.  */
+extern int linux_proc_get_tgid (int lwpid);
+
 /* 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 *, 
+struct lwp_info *iterate_over_lwps (ptid_t filter,
+                                   int (*callback) (struct lwp_info *,
                                                     void *), 
                                    void *data);
 
@@ -95,6 +149,23 @@ linux_trad_target (CORE_ADDR (*register_u_offset)(struct gdbarch *, int, int));
    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);
+
+/* Compute and return the processor core of a given thread.  */
+int linux_nat_core_of_thread_1 (ptid_t ptid);