src/m/sun1.h

   1 /* machine description file for Sun 68000's
   2    Copyright (C) 1985, 1986 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Emacs.
   5
   6 GNU Emacs is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Emacs is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Emacs; see the file COPYING.  If not, write to
  18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21
  22 /* The following line tells the configuration script what sort of
  23    operating system this machine is likely to run.
  24    USUAL-OPSYS="note"
  25
  26 NOTE-START
  27 Sun 1, 2 and 3 (-machine=sun1, -machine=sun2, -machine=sun3;
  28                 -opsystem=bsd4-2 or -opsystem=sunos4)
  29
  30   Whether you should use sun1, sun2 or sun3 depends on the
  31                    VERSION OF THE OPERATING SYSTEM
  32   you have.  There are three machine types for different versions of
  33   SunOS.  All are derived from Berkeley 4.2, meaning that you should
  34   use -opsystem=bsd4-2.  Emacs 17 has run on all of them.  You will
  35   need to use sun3 on Sun 2's running SunOS release 3.
  36
  37   For SunOS release 4 on a Sun 3, use -machine=sun3 and
  38   -opsystem=sunos4.  See the file share-lib/SUNBUG for how to solve
  39   problems caused by bugs in the "export" version of SunOS 4.
  40 NOTE-END  */
  41
  42 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
  43    is the most significant byte.  */
  44
  45 #define WORDS_BIG_ENDIAN
  46
  47 /* Say this machine is a 68000 */
  48
  49 #define m68000
  50
  51 /* Use type int rather than a union, to represent Lisp_Object */
  52
  53 #define NO_UNION_TYPE
  54
  55 /* Sun can't write competent compilers */
  56 #define COMPILER_REGISTER_BUG
  57
  58 /* XINT must explicitly sign-extend */
  59
  60 #define EXPLICIT_SIGN_EXTEND
  61
  62 /* Data type of load average, as read out of kmem.  */
  63
  64 #define LOAD_AVE_TYPE long
  65
  66 /* Convert that into an integer that is 100 for a load average of 1.0  */
  67
  68 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
  69
  70 /* Must use the system's termcap.  It does special things.  */
  71
  72 #define LIBS_TERMCAP -ltermcap
  73
  74 /* Mask for address bits within a memory segment */
  75
  76 #define SEGMENT_MASK (SEGSIZ - 1)