src/m/sun1.h

   1 /* machine description file for Sun 68000's
   2    Copyright (C) 1985, 1986, 2001, 2002, 2003, 2004,
   3                  2005, 2006, 2007  Free Software Foundation, Inc.
   4
   5 This file is part of GNU Emacs.
   6
   7 GNU Emacs is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GNU Emacs is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU Emacs; see the file COPYING.  If not, write to
  19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20 Boston, MA 02110-1301, USA.  */
  21
  22
  23 /* The following line tells the configuration script what sort of
  24    operating system this machine is likely to run.
  25    USUAL-OPSYS="note"
  26
  27 NOTE-START
  28 Sun 1, 2 and 3 (-machine=sun1, -machine=sun2, -machine=sun3;
  29                 -opsystem=bsd4-2 or -opsystem=sunos4)
  30
  31   Whether you should use sun1, sun2 or sun3 depends on the
  32                    VERSION OF THE OPERATING SYSTEM
  33   you have.  There are three machine types for different versions of
  34   SunOS.  All are derived from Berkeley 4.2, meaning that you should
  35   use -opsystem=bsd4-2.  Emacs 17 has run on all of them.  You will
  36   need to use sun3 on Sun 2's running SunOS release 3.
  37
  38   For SunOS release 4 on a Sun 3, use -machine=sun3 and
  39   -opsystem=sunos4.  See the file share-lib/SUNBUG for how to solve
  40   problems caused by bugs in the "export" version of SunOS 4.
  41 NOTE-END  */
  42
  43 /* Define WORDS_BIG_ENDIAN if lowest-numbered byte in a word
  44    is the most significant byte.  */
  45
  46 #define WORDS_BIG_ENDIAN
  47
  48 /* Say this machine is a 68000 */
  49
  50 #define m68000
  51
  52 /* Use type int rather than a union, to represent Lisp_Object */
  53
  54 #define NO_UNION_TYPE
  55
  56 /* Sun can't write competent compilers */
  57 #define COMPILER_REGISTER_BUG
  58
  59 /* XINT must explicitly sign-extend */
  60
  61 #define EXPLICIT_SIGN_EXTEND
  62
  63 /* Data type of load average, as read out of kmem.  */
  64
  65 #define LOAD_AVE_TYPE long
  66
  67 /* Convert that into an integer that is 100 for a load average of 1.0  */
  68
  69 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
  70
  71 /* Must use the system's termcap.  It does special things.  */
  72
  73 #define LIBS_TERMCAP -ltermcap
  74
  75 /* Mask for address bits within a memory segment */
  76
  77 #define SEGMENT_MASK (SEGSIZ - 1)
  78
  79 /* arch-tag: 58ec9c79-48bd-4d1b-aad1-65a09a6b0d10
  80    (do not change this comment) */