src/m/gec63.h

   1 /* machine description file for gec63
   2    Copyright (C) 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="usg5-2"  */
  25
  26 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
  27    is the most significant byte.  */
  28
  29 #define WORDS_BIG_ENDIAN
  30
  31 /* Say this machine is a 68000 */
  32
  33 #define gec63
  34
  35 /* Use an int to represent Lisp_Object */
  36
  37 #define NO_UNION_TYPE
  38
  39 /* GEC63 has alloca in the PW/ux63 library.  */
  40 #define LIB_STANDARD -lPW -lc
  41 #define HAVE_ALLOCA
  42
  43 /* Do not define LOAD_AVE_TYPE or LOAD_AVE_CVT
  44    since there is no /dev/kmem */
  45
  46 #undef ADDR_CORRECT(x)
  47 #define NO_ARG_ARRAY
  48
  49 #undef TERMCAP
  50 #define TERMINFO
  51
  52 #define NO_REMAP
  53
  54 /* The rest of the file certainly needs updating for Emacs 19.29!  */
  55
  56 /* Define sizes of portions of a Lisp_Object.  */
  57 #define VALBITS 24
  58
  59 #define VALAMASK (((1<<VALBITS) - 1)| 0xF0000000L)
  60
  61 #define XTYPE(a) ((enum Lisp_Type) (((a) >> VALBITS) & GCTYPEMASK))
  62 #define XSETTYPE(a, b) ((a)  =  ((a) & VALAMASK)  +  ((int)(b) << VALBITS))
  63
  64 #define XPNTR(a) ((a) & VALAMASK)
  65
  66 #define XSET(var, type, ptr) \
  67    ((var) = ((int)(type) << VALBITS) + ((int) (ptr) & VALAMASK))
  68
  69 /* Move some garbage-collector flag bits to different bit positions.  */
  70 #define ARRAY_MARK_FLAG (1 << 27)