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/* machine description file for vax.
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 GNU Emacs; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* The following line tells the configuration script what sort of
operating system this machine is likely to run.
USUAL-OPSYS="note"
NOTE-START
The vax (-machine=vax) runs zillions of different operating systems.
Vax running Berkeley Unix (-opsystem=bsd4-1, -opsystem=bsd4-2 or
-opsystem=bsd4-3)
Works.
Vax running Ultrix (-opsystem=bsd4-2)
Works. See under Ultrix in share-lib/MACHINES for problems using X
windows on Ultrix.
Vax running System V rel 2 (-opsystem=usg5-2)
18.27 Works.
Vax running System V rel 0 (-opsystem=usg5-0)
Works as of 18.36.
Vax running VMS (-opsystem=vms)
18.36 believed to work. Addition of features is necessary to make
this Emacs version more usable.
NOTE-END */
/* The following three symbols give information on
the size of various data types. */
#define SHORTBITS 16 /* Number of bits in a short */
#define INTBITS 32 /* Number of bits in an int */
#define LONGBITS 32 /* Number of bits in a long */
/* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
is the most significant byte. */
#undef WORDS_BIG_ENDIAN
/* #define vax -- appears to be done automatically */
/* Use type int rather than a union, to represent Lisp_Object */
#define NO_UNION_TYPE
/* crt0.c should use the vax-bsd style of entry, with no dummy args. */
#define CRT0_DUMMIES
/* crt0.c should define a symbol `start' and do .globl with a dot. */
#define DOT_GLOBAL_START
#ifdef BSD
/* USG systems I know of running on Vaxes do not actually
support the load average, so disable it for them. */
/* Data type of load average, as read out of kmem. */
#define LOAD_AVE_TYPE double
/* Convert that into an integer that is 100 for a load average of 1.0 */
#define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
#endif /* BSD */
#ifdef VMS
/* Data type of load average, as read out of driver. */
#define LOAD_AVE_TYPE float
/* Convert that into an integer that is 100 for a load average of 1.0 */
#define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
#endif /* VMS */
/* Vax sysV has alloca in the PW library. */
#ifdef USG
#define LIB_STANDARD -lPW -lc
#define HAVE_ALLOCA
/* There is some bug in unexec in for usg 5.2 on a vax
which nobody who runs such a system has yet tracked down. */
#ifndef USG5_0
#define NO_REMAP
#endif /* USG 5_0 */
#define TEXT_START 0
#endif /* USG */
#ifdef BSD
#define HAVE_ALLOCA
#endif /* BSD */
#ifdef VMS
#define C_ALLOCA
#endif
#ifdef BSD4_2
#define HAVE_FTIME
#endif
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