gdb/gnu-nat.h

   1 /* Common things used by the various *gnu-nat.c files
   2    Copyright 1995, 1996, 1997, 1999, 2000 Free Software Foundation, Inc.
   3
   4    Written by Miles Bader <miles@gnu.ai.mit.edu>
   5
   6    The GNU Hurd is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU General Public License as
   8    published by the Free Software Foundation; either version 2, or (at
   9    your option) any later version.
  10
  11    The GNU Hurd is distributed in the hope that it will be useful, but
  12    WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    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, write to the Free Software
  18    Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #ifndef __GNU_NAT_H__
  22 #define __GNU_NAT_H__
  23
  24 #include <unistd.h>
  25 #include <mach.h>
  26
  27 struct inf;
  28
  29 extern struct inf *current_inferior;
  30
  31 /* Converts a GDB pid to a struct proc.  */
  32 struct proc *inf_tid_to_thread (struct inf *inf, int tid);
  33
  34 /* Makes sure that INF's thread list is synced with the actual process.  */
  35 int inf_update_procs (struct inf *inf);
  36
  37 /* A proc is either a thread, or the task (there can only be one task proc
  38    because it always has the same TID, PROC_TID_TASK).  */
  39 struct proc
  40   {
  41     thread_t port;              /* The task or thread port.  */
  42     int tid;                    /* The GDB pid (actually a thread id).  */
  43     int num;                    /* An id number for threads, to print.  */
  44
  45     mach_port_t saved_exc_port; /* The task/thread's real exception port.  */
  46     mach_port_t exc_port;       /* Our replacement, which for.  */
  47
  48     int sc;                     /* Desired suspend count.   */
  49     int cur_sc;                 /* Implemented suspend count.  */
  50     int run_sc;                 /* Default sc when the program is running. */
  51     int pause_sc;               /* Default sc when gdb has control. */
  52     int resume_sc;              /* Sc resulting from the last resume. */
  53     int detach_sc;              /* SC to leave around when detaching
  54                                    from program. */
  55
  56     thread_state_data_t state;  /* Registers, &c. */
  57     int state_valid:1;          /* True if STATE is up to date. */
  58     int state_changed:1;
  59
  60     int aborted:1;              /* True if thread_abort has been called.  */
  61     int dead:1;                 /* We happen to know it's actually dead. */
  62
  63     /* Bit mask of registers fetched by gdb.  This is used when we re-fetch
  64        STATE after aborting the thread, to detect that gdb may have out-of-date
  65        information.  */
  66     unsigned long fetched_regs;
  67
  68     struct inf *inf;            /* Where we come from.  */
  69
  70     struct proc *next;
  71   };
  72
  73 /* The task has a thread entry with this TID.  */
  74 #define PROC_TID_TASK   (-1)
  75
  76 #define proc_is_task(proc) ((proc)->tid == PROC_TID_TASK)
  77 #define proc_is_thread(proc) ((proc)->tid != PROC_TID_TASK)
  78
  79 extern int __proc_pid (struct proc *proc);
  80
  81 /* Make sure that the state field in PROC is up to date, and return a
  82    pointer to it, or 0 if something is wrong.  If WILL_MODIFY is true,
  83    makes sure that the thread is stopped and aborted first, and sets
  84    the state_changed field in PROC to true.  */
  85 extern thread_state_t proc_get_state (struct proc *proc, int will_modify);
  86
  87 /* Return printable description of proc.  */
  88 extern char *proc_string (struct proc *proc);
  89
  90 #define proc_debug(_proc, msg, args...) \
  91   do { struct proc *__proc = (_proc); \
  92        debug ("{proc %d/%d %p}: " msg, \
  93               __proc_pid (__proc), __proc->tid, __proc , ##args); } while (0)
  94
  95 extern int gnu_debug_flag;
  96
  97 #define debug(msg, args...) \
  98  do { if (gnu_debug_flag) \
  99         fprintf_unfiltered (gdb_stdlog, "%s: " msg "\r\n", __FUNCTION__ , ##args); } while (0)
 100
 101 #endif /* __GNU_NAT_H__ */