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 */
93