src/m/cnvrgnt.h

   1 /* machine description file for convergent S series.
   2    Copyright (C) 1989 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 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
  23    is the most significant byte.  */
  24
  25 #define WORDS_BIG_ENDIAN
  26
  27 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  28  * group of arguments and treat it as an array of the arguments.  */
  29
  30 /* #define NO_ARG_ARRAY */
  31
  32 /* Define WORD_MACHINE if addresses and such have
  33  * to be corrected before they can be used as byte counts.  */
  34
  35 /* #define WORD_MACHINE */
  36
  37 /* Now define a symbol for the cpu type, if your compiler
  38    does not define it automatically.  */
  39
  40 #define m68000
  41
  42 /* Use type int rather than a union, to represent Lisp_Object.
  43    This is desirable for most machines.  */
  44
  45 #define NO_UNION_TYPE
  46
  47 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  48    the 24-bit bit field into an int.  In other words, if bit fields
  49    are always unsigned.
  50
  51    If you use NO_UNION_TYPE, this flag does not matter.  */
  52
  53 #define EXPLICIT_SIGN_EXTEND
  54
  55 /* Data type of load average, as read out of kmem.
  56    These are commented out since it is not supported by this machine.  */
  57
  58 #define LOAD_AVE_TYPE double
  59
  60 /* Convert that into an integer that is 100 for a load average of 1.0 */
  61
  62 #define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
  63
  64 /* Define CANNOT_DUMP on machines where unexec does not work.
  65    Then the function dump-emacs will not be defined
  66    and temacs will do (load "loadup") automatically unless told otherwise.  */
  67
  68 /* #define CANNOT_DUMP */
  69
  70 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  71    pure and impure space as loaded can vary, and even their
  72    relative order cannot be relied on.
  73
  74    Otherwise Emacs assumes that text space precedes data space,
  75    numerically.  */
  76
  77 #undef VIRT_ADDR_VARIES
  78
  79 /* Define C_ALLOCA if this machine does not support a true alloca
  80    and the one written in C should be used instead.
  81    Define HAVE_ALLOCA to say that the system provides a properly
  82    working alloca function and it should be used.
  83    Define neither one if an assembler-language alloca
  84    in the file alloca.s should be used.  */
  85
  86 #define C_ALLOCA
  87 #undef HAVE_ALLOCA
  88
  89 /* Define NO_REMAP if memory segmentation makes it not work well
  90    to change the boundary between the text section and data section
  91    when Emacs is dumped.  If you define this, the preloaded Lisp
  92    code will not be sharable; but that's better than failing completely.  */
  93
  94 #define NO_REMAP
  95 \f
  96 /* Change some things to avoid bugs in compiler.  */
  97
  98 #define SWITCH_ENUM_BUG
  99
 100 /* fork(2) and vfork() are the same here.  */
 101
 102 #define HAVE_VFORK
 103
 104 /* grows towards lower addresses.  */
 105
 106 #define STACK_DIRECTION -1
 107
 108 /* some errno.h's don't actually allocate the variable itself.
 109    Cause crt0.c to define errno.  */
 110
 111 #define NEED_ERRNO