gdb/config/i386/nm-i386v42mp.h

   1 /* Native support for i386 running SVR4.
   2    Copyright 1986, 1987, 1989, 1992, 1996, 1997, 1998
   3    Free Software Foundation, Inc.
   4    Changes for 80386 by Pace Willisson (pace@prep.ai.mit.edu), July 1988.
   5
   6    This file is part of GDB.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 59 Temple Place - Suite 330,
  21    Boston, MA 02111-1307, USA.  */
  22
  23 #ifndef NM_I386V42MP_H
  24 #define NM_I386V42MP_H
  25
  26 #include "config/nm-sysv4.h"
  27
  28 /* define to select for other sysv4.2mp weirdness (see procfs.c) */
  29
  30 #define UNIXWARE
  31
  32 #if 0
  33 /* The following macros extract process and lwp/thread ids from a
  34    composite id.
  35
  36    For consistency with UnixWare core files, allocate bits 0-15 for
  37    process ids and bits 16 and up for lwp ids.  Reserve bit 31 for
  38    negative return values to indicate exceptions, and use bit 30 as a
  39    flag to indicate a user-mode thread, leaving 14 bits for lwp
  40    ids. */
  41
  42 /* Number of bits in composite id allocated to process number. */
  43 #define PIDBITS 16
  44
  45 /* Return the process id stored in composite PID. */
  46 #define PIDGET(PID)             (((PID) & ((1 << PIDBITS) - 1)))
  47
  48 /* Return the thread or lwp id stored in composite PID. */
  49 #define TIDGET(PID)             (((PID) & 0x3fffffff) >> PIDBITS)
  50 #define LIDGET(PID)             TIDGET(PID)
  51
  52 /* Construct a composite id from lwp LID and the process portion of
  53    composite PID. */
  54 #define MERGEPID(PID, LID)      (PIDGET(PID) | ((LID) << PIDBITS))
  55 #define MKLID(PID, LID)         MERGEPID(PID, LID)
  56
  57 /* Construct a composite id from thread TID and the process portion of
  58    composite PID. */
  59 #define MKTID(PID, TID)         (MERGEPID(PID, TID) | 0x40000000)
  60
  61 /* Return whether PID contains a user-space thread id. */
  62 #define ISTID(PID)              ((PID) & 0x40000000)
  63 #endif
  64
  65 /* New definitions of the ptid stuff.  Due to the way the
  66    code is structured in uw-thread.c, I'm overloading the thread id
  67    and lwp id onto the lwp field.  The tid field is used to indicate
  68    whether the lwp is a tid or not.
  69
  70    FIXME: Check that core file support is not broken.  (See original
  71    #if 0'd comments above.)
  72    FIXME: Restructure uw-thread.c so that the struct ptid fields
  73    can be used as intended. */
  74
  75 /* Return the process id stored in composite PID. */
  76 #define PIDGET(PID) (ptid_get_pid (PID))
  77
  78 /* Return the thread or lwp id stored in composite PID. */
  79 #define TIDGET(PID) (ptid_get_lwp (PID))
  80 #define LIDGET(PID) TIDGET(PID)
  81
  82 #define MERGEPID(PID, LID) (ptid_build ((PID), (LID), 0))
  83 #define MKLID(PID, LID) (ptid_build ((PID), (LID), 0))
  84
  85 /* Construct a composite id from thread TID and the process portion of
  86    composite PID. */
  87 #define MKTID(PID, TID) (ptid_build ((PID), (TID), 1))
  88
  89 /* Return whether PID contains a user-space thread id. */
  90 #define ISTID(PID) (ptid_get_tid (PID))
  91
  92 #endif /* NM_I386V42MP_H */