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115 lines
2.9 KiB
C
115 lines
2.9 KiB
C
/* machine description file for vax.
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Copyright (C) 1985, 1986, 2002 Free Software Foundation, Inc.
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This file is part of GNU Emacs.
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GNU Emacs is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Emacs is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Emacs; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* The following line tells the configuration script what sort of
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operating system this machine is likely to run.
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USUAL-OPSYS="note"
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NOTE-START
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The vax (-machine=vax) runs zillions of different operating systems.
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Vax running Berkeley Unix (-opsystem=bsd4-1, -opsystem=bsd4-2 or
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-opsystem=bsd4-3)
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Works.
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Vax running Ultrix (-opsystem=bsd4-2)
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Works. See under Ultrix in share-lib/MACHINES for problems using X
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windows on Ultrix.
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Vax running System V rel 2 (-opsystem=usg5-2)
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18.27 Works.
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Vax running System V rel 0 (-opsystem=usg5-0)
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Works as of 18.36.
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Vax running VMS (-opsystem=vms)
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18.36 believed to work. Addition of features is necessary to make
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this Emacs version more usable.
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NOTE-END */
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/* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
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is the most significant byte. */
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#undef WORDS_BIG_ENDIAN
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/* #define vax -- appears to be done automatically */
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/* Use type int rather than a union, to represent Lisp_Object */
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#define NO_UNION_TYPE
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/* crt0.c should use the vax-bsd style of entry, with no dummy args. */
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#define CRT0_DUMMIES
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/* crt0.c should define a symbol `start' and do .globl with a dot. */
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#define DOT_GLOBAL_START
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#ifdef BSD_SYSTEM
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/* USG systems I know of running on Vaxes do not actually
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support the load average, so disable it for them. */
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/* Data type of load average, as read out of kmem. */
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#define LOAD_AVE_TYPE double
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/* Convert that into an integer that is 100 for a load average of 1.0 */
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#define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
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#endif /* BSD_SYSTEM */
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#ifdef VMS
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/* Data type of load average, as read out of driver. */
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#define LOAD_AVE_TYPE float
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/* Convert that into an integer that is 100 for a load average of 1.0 */
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#define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
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#endif /* VMS */
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/* Vax sysV has alloca in the PW library. */
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#ifdef USG
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#define LIB_STANDARD -lPW -lc
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/* There is some bug in unexec in for usg 5.2 on a vax
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which nobody who runs such a system has yet tracked down. */
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#ifndef USG5_0
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#define NO_REMAP
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#endif /* USG 5_0 */
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#define TEXT_START 0
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#endif /* USG */
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#ifdef BSD4_2
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#define HAVE_FTIME
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#endif
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