gdb/gnu-nat.h

   1 /* Common things used by the various *gnu-nat.c files
   2
   3    Copyright (C) 1995, 1996 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., 675 Mass Ave, Cambridge, MA 02139, 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 /* A proc is either a thread, or the task (there can only be one task proc
  35    because it always has the same TID, PROC_TID_TASK).  */
  36 struct proc
  37 {
  38   thread_t port;                /* The task or thread port.  */
  39   int tid;                      /* The GDB pid (actually a thread id).  */
  40   int num;                      /* An id number for threads, to print.  */
  41
  42   mach_port_t saved_exc_port;   /* The task/thread's real exception port.  */
  43   mach_port_t exc_port;         /* Our replacement, which for.  */
  44
  45   int sc;                       /* Desired suspend count.   */
  46   int cur_sc;                   /* Implemented suspend count.  */
  47   int run_sc;                   /* Default sc when the program is running. */
  48   int pause_sc;                 /* Default sc when gdb has control. */
  49   int resume_sc;                /* Sc resulting from the last resume. */
  50   int detach_sc;                /* SC to leave around when detaching
  51                                    from program. */
  52
  53   thread_state_data_t state;    /* Registers, &c. */
  54   int state_valid : 1;          /* True if STATE is up to date. */
  55   int state_changed : 1;
  56
  57   int aborted : 1;              /* True if thread_abort has been called.  */
  58   int dead : 1;                 /* We happen to know it's actually dead. */
  59
  60   /* Bit mask of registers fetched by gdb.  This is used when we re-fetch
  61      STATE after aborting the thread, to detect that gdb may have out-of-date
  62      information.  */
  63   unsigned long fetched_regs;
  64
  65   struct inf *inf;              /* Where we come from.  */
  66
  67   struct proc *next;
  68 };
  69
  70 /* The task has a thread entry with this TID.  */
  71 #define PROC_TID_TASK   (-1)
  72
  73 #define proc_is_task(proc) ((proc)->tid == PROC_TID_TASK)
  74 #define proc_is_thread(proc) ((proc)->tid != PROC_TID_TASK)
  75
  76 extern int __proc_pid (struct proc *proc);
  77
  78 extern thread_state_t proc_get_state (struct proc *proc, int will_modify);
  79
  80 #define proc_debug(_proc, msg, args...) \
  81   do { struct proc *__proc = (_proc); \
  82        debug ("{proc %d/%d %p}: " msg, \
  83               __proc_pid (__proc), __proc->tid, __proc , ##args); } while (0)
  84
  85 #if MAINTENANCE_CMDS
  86 extern int gnu_debug_flag;
  87 #define debug(msg, args...) \
  88  do { if (gnu_debug_flag) \
  89         fprintf (stderr, "%s: " msg "\r\n", __FUNCTION__ , ##args); } while (0)
  90 #else
  91 #define debug(msg, args...) (void)0
  92 #endif
  93
  94 #endif /* __GNU_NAT_H__ */