gdb/gnu-nat.h

   1 /* Common things used by the various *gnu-nat.c files
   2    Copyright (C) 1995, 1996, 1997, 1999, 2000, 2007
   3    Free Software Foundation, Inc.
   4
   5    Written by Miles Bader <miles@gnu.ai.mit.edu>
   6
   7    The GNU Hurd is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU General Public License as
   9    published by the Free Software Foundation; either version 2, or (at
  10    your option) any later version.
  11
  12    The GNU Hurd is distributed in the hope that it will be useful, but
  13    WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20    Boston, MA 02110-1301, USA.  */
  21
  22 #ifndef __GNU_NAT_H__
  23 #define __GNU_NAT_H__
  24
  25 #include <unistd.h>
  26 #include <mach.h>
  27
  28 struct inf;
  29
  30 extern struct inf *current_inferior;
  31
  32 /* Converts a GDB pid to a struct proc.  */
  33 struct proc *inf_tid_to_thread (struct inf *inf, int tid);
  34
  35 /* Makes sure that INF's thread list is synced with the actual process.  */
  36 int inf_update_procs (struct inf *inf);
  37
  38 /* A proc is either a thread, or the task (there can only be one task proc
  39    because it always has the same TID, PROC_TID_TASK).  */
  40 struct proc
  41   {
  42     thread_t port;              /* The task or thread port.  */
  43     int tid;                    /* The GDB pid (actually a thread id).  */
  44     int num;                    /* An id number for threads, to print.  */
  45
  46     mach_port_t saved_exc_port; /* The task/thread's real exception port.  */
  47     mach_port_t exc_port;       /* Our replacement, which for.  */
  48
  49     int sc;                     /* Desired suspend count.   */
  50     int cur_sc;                 /* Implemented suspend count.  */
  51     int run_sc;                 /* Default sc when the program is running. */
  52     int pause_sc;               /* Default sc when gdb has control. */
  53     int resume_sc;              /* Sc resulting from the last resume. */
  54     int detach_sc;              /* SC to leave around when detaching
  55                                    from program. */
  56
  57     thread_state_data_t state;  /* Registers, &c. */
  58     int state_valid:1;          /* True if STATE is up to date. */
  59     int state_changed:1;
  60
  61     int aborted:1;              /* True if thread_abort has been called.  */
  62     int dead:1;                 /* We happen to know it's actually dead. */
  63
  64     /* Bit mask of registers fetched by gdb.  This is used when we re-fetch
  65        STATE after aborting the thread, to detect that gdb may have out-of-date
  66        information.  */
  67     unsigned long fetched_regs;
  68
  69     struct inf *inf;            /* Where we come from.  */
  70
  71     struct proc *next;
  72   };
  73
  74 /* The task has a thread entry with this TID.  */
  75 #define PROC_TID_TASK   (-1)
  76
  77 #define proc_is_task(proc) ((proc)->tid == PROC_TID_TASK)
  78 #define proc_is_thread(proc) ((proc)->tid != PROC_TID_TASK)
  79
  80 extern int __proc_pid (struct proc *proc);
  81
  82 /* Make sure that the state field in PROC is up to date, and return a
  83    pointer to it, or 0 if something is wrong.  If WILL_MODIFY is true,
  84    makes sure that the thread is stopped and aborted first, and sets
  85    the state_changed field in PROC to true.  */
  86 extern thread_state_t proc_get_state (struct proc *proc, int will_modify);
  87
  88 /* Return printable description of proc.  */
  89 extern char *proc_string (struct proc *proc);
  90
  91 #define proc_debug(_proc, msg, args...) \
  92   do { struct proc *__proc = (_proc); \
  93        debug ("{proc %d/%d %p}: " msg, \
  94               __proc_pid (__proc), __proc->tid, __proc , ##args); } while (0)
  95
  96 extern int gnu_debug_flag;
  97
  98 #define debug(msg, args...) \
  99  do { if (gnu_debug_flag) \
 100         fprintf_unfiltered (gdb_stdlog, "%s:%d: " msg "\r\n", __FILE__ , __LINE__ , ##args); } while (0)
 101
 102 #endif /* __GNU_NAT_H__ */