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113 lines
4.3 KiB
C
113 lines
4.3 KiB
C
/* machine description file for Whitechapel Computer Works MG1 (ns16000 based).
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Copyright (C) 1985 Free Software Foundation, Inc.
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MG-1 version by L.M.McLoughlin
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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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We are in the dark about what operating system runs on the Whitechapel
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systems. Consult share-lib/MACHINES for information on which
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operating systems Emacs has already been ported to; one of them might
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work. If you find an existing system name that works or write your
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own configuration files, please let the Free Software Foundation in on
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your work; we'd like to distribute this information.
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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 NO_ARG_ARRAY if you cannot take the address of the first of a
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* group of arguments and treat it as an array of the arguments. */
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/* ns16000 call sequence used on mg1 means that &arg = the args as an array */
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#undef NO_ARG_ARRAY
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/* Define WORD_MACHINE if addresses and such have
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* to be corrected before they can be used as byte counts. */
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/* ns16000 addresses are byte addresses */
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#undef WORD_MACHINE
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/* Now define a symbol for the cpu type, if your compiler
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does not define it automatically:
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vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
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are the ones defined so far. */
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/* Say this machine is a 16000 and an mg1, cpp says its a 32000 */
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#define ns16000
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#define mg1
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/* Use type int rather than a union, to represent Lisp_Object */
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/* This is desirable for most machines. */
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/* Not sure on mg-1 but this shouldn't hurt! */
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#define NO_UNION_TYPE
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/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
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the 24-bit bit field into an int. In other words, if bit fields
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are always unsigned.
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If you use NO_UNION_TYPE, this flag does not matter. */
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#define EXPLICIT_SIGN_EXTEND
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/* Data type of load average, as read out of kmem. */
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/* mg1 its an unsigned long */
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#define LOAD_AVE_TYPE unsigned long
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/* Convert that into an integer that is 100 for a load average of 1.0 */
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#define FSCALE 1000.0
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#define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
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/* Define CANNOT_DUMP on machines where unexec does not work.
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Then the function dump-emacs will not be defined
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and temacs will do (load "loadup") automatically unless told otherwise. */
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/* ns16000's have an unexec, so should the mg-1 */
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#undef CANNOT_DUMP
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/* Define VIRT_ADDR_VARIES if the virtual addresses of
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pure and impure space as loaded can vary, and even their
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relative order cannot be relied on.
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Otherwise Emacs assumes that text space precedes data space,
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numerically. */
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/* hmmmm... not sure. copied sequent.h */
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#undef VIRT_ADDR_VARIES
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/* Define C_ALLOCA if this machine does not support a true alloca
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and the one written in C should be used instead.
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Define HAVE_ALLOCA to say that the system provides a properly
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working alloca function and it should be used.
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Define neither one if an assembler-language alloca
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in the file alloca.s should be used. */
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/* hmmmm... again not sure. so copied sequent.h again! */
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#undef C_ALLOCA
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#undef HAVE_ALLOCA
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/* Define NO_REMAP if memory segmentation makes it not work well
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to change the boundary between the text section and data section
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when Emacs is dumped. If you define this, the preloaded Lisp
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code will not be sharable; but that's better than failing completely. */
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/* mapping seems screwy */
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#define NO_REMAP
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/* Avoids a compiler bug */
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/* borrowed from sequent.h */
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