gdb/gnu-nat.h

   1 /* Common things used by the various *gnu-nat.c files
   2    Copyright (C) 1995, 1996 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, Boston, MA 02111-1307, USA.  */
  19
  20 #ifndef __GNU_NAT_H__
  21 #define __GNU_NAT_H__
  22
  23 #include <unistd.h>
  24 #include <mach.h>
  25
  26 struct inf;
  27
  28 extern struct inf *current_inferior;
  29
  30 /* Converts a GDB pid to a struct proc.  */
  31 struct proc *inf_tid_to_thread (struct inf *inf, int tid);
  32
  33 /* A proc is either a thread, or the task (there can only be one task proc
  34    because it always has the same TID, PROC_TID_TASK).  */
  35 struct proc
  36 {
  37   thread_t port;                /* The task or thread port.  */
  38   int tid;                      /* The GDB pid (actually a thread id).  */
  39   int num;                      /* An id number for threads, to print.  */
  40
  41   mach_port_t saved_exc_port;   /* The task/thread's real exception port.  */
  42   mach_port_t exc_port;         /* Our replacement, which for.  */
  43
  44   int sc;                       /* Desired suspend count.   */
  45   int cur_sc;                   /* Implemented suspend count.  */
  46   int run_sc;                   /* Default sc when the program is running. */
  47   int pause_sc;                 /* Default sc when gdb has control. */
  48   int resume_sc;                /* Sc resulting from the last resume. */
  49   int detach_sc;                /* SC to leave around when detaching
  50                                    from program. */
  51
  52   thread_state_data_t state;    /* Registers, &c. */
  53   int state_valid : 1;          /* True if STATE is up to date. */
  54   int state_changed : 1;
  55
  56   int aborted : 1;              /* True if thread_abort has been called.  */
  57   int dead : 1;                 /* We happen to know it's actually dead. */
  58
  59   /* Bit mask of registers fetched by gdb.  This is used when we re-fetch
  60      STATE after aborting the thread, to detect that gdb may have out-of-date
  61      information.  */
  62   unsigned long fetched_regs;
  63
  64   struct inf *inf;              /* Where we come from.  */
  65
  66   struct proc *next;
  67 };
  68
  69 /* The task has a thread entry with this TID.  */
  70 #define PROC_TID_TASK   (-1)
  71
  72 #define proc_is_task(proc) ((proc)->tid == PROC_TID_TASK)
  73 #define proc_is_thread(proc) ((proc)->tid != PROC_TID_TASK)
  74
  75 extern int __proc_pid (struct proc *proc);
  76
  77 extern thread_state_t proc_get_state (struct proc *proc, int will_modify);
  78
  79 #define proc_debug(_proc, msg, args...) \
  80   do { struct proc *__proc = (_proc); \
  81        debug ("{proc %d/%d %p}: " msg, \
  82               __proc_pid (__proc), __proc->tid, __proc , ##args); } while (0)
  83
  84 #if MAINTENANCE_CMDS
  85 extern int gnu_debug_flag;
  86 #define debug(msg, args...) \
  87  do { if (gnu_debug_flag) \
  88         fprintf (stderr, "%s: " msg "\r\n", __FUNCTION__ , ##args); } while (0)
  89 #else
  90 #define debug(msg, args...) (void)0
  91 #endif
  92
  93 #endif /* __GNU_NAT_H__ */