src/m/mega68.h

   1 /* machine description file for Megatest 68000's.
   2    Copyright (C) 1985, 2002, 2003, 2004, 2005,
   3                  2006 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 2, 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="bsd4-2"  */
  26
  27 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
  28    is the most significant byte.  */
  29
  30 #define WORDS_BIG_ENDIAN
  31
  32 /* XINT must explicitly sign-extend */
  33
  34 #define EXPLICIT_SIGN_EXTEND
  35
  36 /* Say this machine is a 68000 */
  37
  38 #define m68000
  39
  40 /* Use type int rather than a union, to represent Lisp_Object */
  41
  42 #define NO_UNION_TYPE
  43
  44 /* Data type of load average, as read out of kmem.  */
  45
  46 #define LOAD_AVE_TYPE double
  47
  48 /* Convert that into an integer that is 100 for a load average of 1.0  */
  49
  50 #define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
  51
  52 /* arch-tag: 61e6deb4-a93e-444b-bbd5-9887a83f1bbc
  53    (do not change this comment) */