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/* Native support for i386 running SVR4.
Copyright 1986, 1987, 1989, 1992, 1996, 1997, 1998
Free Software Foundation, Inc.
Changes for 80386 by Pace Willisson (pace@prep.ai.mit.edu), July 1988.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef NM_I386V42MP_H
#define NM_I386V42MP_H
/* SVR4 has /proc support, so use it instead of ptrace. */
#define USE_PROC_FS
/* define to select for other sysv4.2mp weirdness (see procfs.c) */
#define UNIXWARE
#if 0
/* The following macros extract process and lwp/thread ids from a
composite id.
For consistency with UnixWare core files, allocate bits 0-15 for
process ids and bits 16 and up for lwp ids. Reserve bit 31 for
negative return values to indicate exceptions, and use bit 30 as a
flag to indicate a user-mode thread, leaving 14 bits for lwp
ids. */
/* Number of bits in composite id allocated to process number. */
#define PIDBITS 16
/* Return the process id stored in composite PID. */
#define PIDGET(PID) (((PID) & ((1 << PIDBITS) - 1)))
/* Return the thread or lwp id stored in composite PID. */
#define TIDGET(PID) (((PID) & 0x3fffffff) >> PIDBITS)
#define LIDGET(PID) TIDGET(PID)
/* Construct a composite id from lwp LID and the process portion of
composite PID. */
#define MERGEPID(PID, LID) (PIDGET(PID) | ((LID) << PIDBITS))
#define MKLID(PID, LID) MERGEPID(PID, LID)
/* Construct a composite id from thread TID and the process portion of
composite PID. */
#define MKTID(PID, TID) (MERGEPID(PID, TID) | 0x40000000)
/* Return whether PID contains a user-space thread id. */
#define ISTID(PID) ((PID) & 0x40000000)
#endif
/* New definitions of the ptid stuff. Due to the way the
code is structured in uw-thread.c, I'm overloading the thread id
and lwp id onto the lwp field. The tid field is used to indicate
whether the lwp is a tid or not.
FIXME: Check that core file support is not broken. (See original
#if 0'd comments above.)
FIXME: Restructure uw-thread.c so that the struct ptid fields
can be used as intended. */
/* Return the process id stored in composite PID. */
#define PIDGET(PID) (ptid_get_pid (PID))
/* Return the thread or lwp id stored in composite PID. */
#define TIDGET(PID) (ptid_get_lwp (PID))
#define LIDGET(PID) TIDGET(PID)
#define MERGEPID(PID, LID) (ptid_build ((PID), (LID), 0))
#define MKLID(PID, LID) (ptid_build ((PID), (LID), 0))
/* Construct a composite id from thread TID and the process portion of
composite PID. */
#define MKTID(PID, TID) (ptid_build ((PID), (TID), 1))
/* Return whether PID contains a user-space thread id. */
#define ISTID(PID) (ptid_get_tid (PID))
/* This is the amount to subtract from u.u_ar0
to get the offset in the core file of the register values. */
#define KERNEL_U_ADDR 0xe0000000
#endif /* NM_I386V42MP_H */
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