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, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20
  21 /* The following line tells the configuration script what sort of
  22    operating system this machine is likely to run.
  23    USUAL-OPSYS="usg5-2"  */
  24
  25 /* The following three symbols give information on
  26  the size of various data types.  */
  27
  28 #define SHORTBITS 16            /* Number of bits in a short */
  29
  30 #define INTBITS 32              /* Number of bits in an int */
  31
  32 #define LONGBITS 32             /* Number of bits in a long */
  33
  34 /* GEC63 is big-endian: lowest numbered byte is most significant. */
  35
  36 #define BIG_ENDIAN
  37
  38 /* Say this machine is a 68000 */
  39
  40 #define gec63
  41
  42 /* Use an int to represent Lisp_Object */
  43
  44 #define NO_UNION_TYPE
  45
  46 /* GEC63 has alloca in the PW/ux63 library.  */
  47 #define LIB_STANDARD -lPW -lc
  48 #define HAVE_ALLOCA
  49
  50 /* Do not define LOAD_AVE_TYPE or LOAD_AVE_CVT
  51    since there is no /dev/kmem */
  52
  53 #undef ADDR_CORRECT(x)
  54 #define NO_ARG_ARRAY
  55
  56 #undef TERMCAP
  57 #define TERMINFO
  58
  59 /* Define sizes of portions of a Lisp_Object.  */
  60 #define VALBITS 22
  61 #define GCTYPEBITS 5
  62
  63 #define VALAMASK (((1<<VALBITS) - 1)| 0xF0000000L)
  64
  65 #define XTYPE(a) ((enum Lisp_Type) (((a) >> VALBITS) & GCTYPEMASK))
  66 #define XSETTYPE(a, b) ((a)  =  ((a) & VALAMASK)  +  ((int)(b) << VALBITS))
  67
  68 #define XPNTR(a) ((a) & VALAMASK)
  69 #define XSETPNTR(a, b) ((a) = ((a) & ~VALAMASK)  +  ((b) & VALAMASK))
  70
  71 #define XSET(var, type, ptr) \
  72    ((var) = ((int)(type) << VALBITS) + ((int) (ptr) & VALAMASK))
  73
  74 /* Move some garbage-collector flag bits to different bit positions.  */
  75 #define ARRAY_MARK_FLAG (1 << 27)
  76 #define DONT_COPY_FLAG (1 << 26)
  77
  78 #define NO_REMAP