1 /* Macro definitions for GDB on an Intel i386 running SVR4.2MP
2 Copyright (C) 1991, 1994 Free Software Foundation, Inc.
3 Written by Fred Fish at Cygnus Support (fnf@cygnus.com)
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
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., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
22 #ifndef TM_I386V42MP_H
23 #define TM_I386V42MP_H 1
25 /* pick up more generic x86 sysv4 stuff */
27 #include "i386/tm-i386v4.h"
29 /* 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)
64 #endif /* ifndef TM_I386V42MP_H */
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