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.
6 This file is part of GDB.
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.
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.
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. */
23 #ifndef NM_I386V42MP_H
24 #define NM_I386V42MP_H
26 #include "config/nm-sysv4.h"
28 /* define to select for other sysv4.2mp weirdness (see procfs.c) */
33 /* The following macros extract process and lwp/thread ids from a
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
42 /* Number of bits in composite id allocated to process number. */
45 /* Return the process id stored in composite PID. */
46 #define PIDGET(PID) (((PID) & ((1 << PIDBITS) - 1)))
48 /* Return the thread or lwp id stored in composite PID. */
49 #define TIDGET(PID) (((PID) & 0x3fffffff) >> PIDBITS)
50 #define LIDGET(PID) TIDGET(PID)
52 /* Construct a composite id from lwp LID and the process portion of
54 #define MERGEPID(PID, LID) (PIDGET(PID) | ((LID) << PIDBITS))
55 #define MKLID(PID, LID) MERGEPID(PID, LID)
57 /* Construct a composite id from thread TID and the process portion of
59 #define MKTID(PID, TID) (MERGEPID(PID, TID) | 0x40000000)
61 /* Return whether PID contains a user-space thread id. */
62 #define ISTID(PID) ((PID) & 0x40000000)
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.
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. */
75 /* Return the process id stored in composite PID. */
76 #define PIDGET(PID) (ptid_get_pid (PID))
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)
82 #define MERGEPID(PID, LID) (ptid_build ((PID), (LID), 0))
83 #define MKLID(PID, LID) (ptid_build ((PID), (LID), 0))
85 /* Construct a composite id from thread TID and the process portion of
87 #define MKTID(PID, TID) (ptid_build ((PID), (TID), 1))
89 /* Return whether PID contains a user-space thread id. */
90 #define ISTID(PID) (ptid_get_tid (PID))
92 #endif /* NM_I386V42MP_H */
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