/* machine description file for SEQUENT BALANCE machines
   Copyright (C) 1985, 1986 Free Software Foundation, Inc.

This file is part of GNU Emacs.

GNU Emacs 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, or (at your option)
any later version.

GNU Emacs 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 XEmacs; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

/* Synched up with: FSF 19.31. */

/* The following line tells the configuration script what sort of 
   operating system this machine is likely to run.
   USUAL-OPSYS="note"  

NOTE-START
Use -opsystem=bsd4-2, or -opsystem=bsd4-3 on newer systems.
NOTE-END */

/* NOTE: this file works for DYNIX release 2.0 
	  (not tested on 1.3) on NS32000's */

/* Now define a symbol for the cpu type, if your compiler
   does not define it automatically:
   vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
   are the ones defined so far.  */

/* BTW: DYNIX defines sequent, ns32000, and ns16000 (GENIX compatibility) */
#ifndef	sequent		/* pre DYNIX 2.1 releases */
# define sequent
#endif

/* crt0.c should use the vax-bsd style of entry, with these dummy args.  */

#define CRT0_DUMMIES bogus_fp,

/* crt0.c should define a symbol `start' and do .globl with a dot.  */

#define DOT_GLOBAL_START

/* Data type of load average, as read out of kmem.  */

#define LOAD_AVE_TYPE unsigned long

/* Convert that into an integer that is 100 for a load average of 1.0  */

#define	FSCALE	1000.0
#define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)

/* Define CANNOT_DUMP on machines where unexec does not work.
   Then the function dump-emacs will not be defined
   and temacs will do (load "loadup") automatically unless told otherwise.  */

/* #define CANNOT_DUMP */

/* Define C_ALLOCA if this machine does not support a true alloca
   and the one written in C should be used instead.
   Define HAVE_ALLOCA to say that the system provides a properly
   working alloca function and it should be used.
   Define neither one if an assembler-language alloca
   in the file alloca.s should be used.  */

/* #define C_ALLOCA */
#define HAVE_ALLOCA

/* Name of file the to look in
   for the kernel symbol table (for load average) */

#undef KERNEL_FILE
#define KERNEL_FILE "/dynix"

/* Avoids a compiler bug */

#define TAHOE_REGISTER_BUG

/* Say that the text segment of a.out includes the header;
   the header actually occupies the first few bytes of the text segment
   and is counted in hdr.a_text.  Furthermore, the value written
   in the a_text in the file must have N_ADDRADJ added to it.  */

#define A_TEXT_OFFSET(HDR) (sizeof (HDR) + N_ADDRADJ (HDR))

/* This is the offset of the executable's text, from the start of the file.  */

#define A_TEXT_SEEK(HDR) (N_TXTOFF (hdr) + sizeof (hdr))

/* (short) negative-int doesn't sign-extend correctly */
#define SHORT_CAST_BUG

/* Cause compilations to be done in parallel in ymakefile.  */
#define MAKE_PARALLEL &

/* Say that mailer interlocking uses flock.  */
#define MAIL_USE_FLOCK

/* On many 4.2-based systems, there's a rather tricky bug
 * with the interpretation of the pid/pgrp value given to
 * the F_SETOWN fcntl() call.  It works as documented EXCEPT
 * when applied to filedescriptors for sockets, in which case
 * the sign must be reversed.  If your emacs subprocesses get
 * SIGIO's when they shouldn't, while running on a socket
 * (e.g. under X windows), you should probably define this.
 */

#define F_SETOWN_SOCK_NEG

/* Some really obscure 4.2-based systems (like Sequent DYNIX)
 * do not support asynchronous I/O (using SIGIO) on sockets,
 * even though it works fine on tty's.  If you have one of
 * these systems, define the following, and then use it in
 * config.h (or elsewhere) to decide when (not) to use SIGIO.
 */

/* Note: This definition not used under XEmacs */
#define NO_SOCK_SIGIO

/* Define how to search all pty names.
   This is for Dynix 3.0; delete next 5 definitions for older systems.  */

#define PTY_MAJOR "pqrstuvwPQRSTUVW"
#define PTY_MINOR "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
#define PTY_ITERATION					\
  register int ma, mi;					\
  for (ma = 0; ma < sizeof(PTY_MAJOR) - 1; ma++)	\
    for (mi = 0; mi < sizeof(PTY_MINOR) - 1; mi++)
#define PTY_NAME_SPRINTF \
  sprintf (ptyname, "/dev/pty%c%c", PTY_MAJOR[ma], PTY_MINOR[mi]);
#define PTY_TTY_NAME_SPRINTF \
  sprintf (ptyname, "/dev/tty%c%c", PTY_MAJOR[ma], PTY_MINOR[mi]);