gdb/gnu-nat.h

   1 /* Common things used by the various *gnu-nat.c files
   2    Copyright (C) 1995-2014 Free Software Foundation, Inc.
   3
   4    Written by Miles Bader <miles@gnu.ai.mit.edu>
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef __GNU_NAT_H__
  20 #define __GNU_NAT_H__
  21
  22 #include <unistd.h>
  23 #include <mach.h>
  24
  25 struct inf;
  26
  27 extern struct inf *gnu_current_inf;
  28
  29 /* Converts a GDB pid to a struct proc.  */
  30 struct proc *inf_tid_to_thread (struct inf *inf, int tid);
  31
  32 /* Makes sure that INF's thread list is synced with the actual process.  */
  33 int inf_update_procs (struct inf *inf);
  34
  35 /* A proc is either a thread, or the task (there can only be one task proc
  36    because it always has the same TID, PROC_TID_TASK).  */
  37 struct proc
  38   {
  39     thread_t port;              /* The task or thread port.  */
  40     int tid;                    /* The GDB pid (actually a thread id).  */
  41     int num;                    /* An id number for threads, to print.  */
  42
  43     mach_port_t saved_exc_port; /* The task/thread's real exception port.  */
  44     mach_port_t exc_port;       /* Our replacement, which for.  */
  45
  46     int sc;                     /* Desired suspend count.   */
  47     int cur_sc;                 /* Implemented suspend count.  */
  48     int run_sc;                 /* Default sc when the program is running.  */
  49     int pause_sc;               /* Default sc when gdb has control.  */
  50     int resume_sc;              /* Sc resulting from the last resume.  */
  51     int detach_sc;              /* SC to leave around when detaching
  52                                    from program.  */
  53
  54     thread_state_data_t state;  /* Registers, &c.  */
  55     int state_valid:1;          /* True if STATE is up to date.  */
  56     int state_changed:1;
  57
  58     int aborted:1;              /* True if thread_abort has been called.  */
  59     int dead:1;                 /* We happen to know it's actually dead.  */
  60
  61     /* Bit mask of registers fetched by gdb.  This is used when we re-fetch
  62        STATE after aborting the thread, to detect that gdb may have out-of-date
  63        information.  */
  64     unsigned long fetched_regs;
  65
  66     struct inf *inf;            /* Where we come from.  */
  67
  68     struct proc *next;
  69   };
  70
  71 /* The task has a thread entry with this TID.  */
  72 #define PROC_TID_TASK   (-1)
  73
  74 #define proc_is_task(proc) ((proc)->tid == PROC_TID_TASK)
  75 #define proc_is_thread(proc) ((proc)->tid != PROC_TID_TASK)
  76
  77 extern int __proc_pid (struct proc *proc);
  78
  79 /* Make sure that the state field in PROC is up to date, and return a
  80    pointer to it, or 0 if something is wrong.  If WILL_MODIFY is true,
  81    makes sure that the thread is stopped and aborted first, and sets
  82    the state_changed field in PROC to true.  */
  83 extern thread_state_t proc_get_state (struct proc *proc, int will_modify);
  84
  85 /* Return printable description of proc.  */
  86 extern char *proc_string (struct proc *proc);
  87
  88 #define proc_debug(_proc, msg, args...) \
  89   do { struct proc *__proc = (_proc); \
  90        debug ("{proc %d/%d %s}: " msg, \
  91               __proc_pid (__proc), __proc->tid, \
  92               host_address_to_string (__proc) , ##args); } while (0)
  93
  94 extern int gnu_debug_flag;
  95
  96 #define debug(msg, args...) \
  97  do { if (gnu_debug_flag) \
  98         fprintf_unfiltered (gdb_stdlog, "%s:%d: " msg "\r\n", \
  99                             __FILE__ , __LINE__ , ##args); } while (0)
 100
 101 /* Create a prototype generic GNU/Hurd target.  The client can
 102    override it with local methods.  */
 103 struct target_ops *gnu_target (void);
 104
 105 #endif /* __GNU_NAT_H__ */