src/m/clipper.h

   1 /* machine description file for clipper
   2    Copyright (C) 1985, 1986, 2002 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 #undef 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 clipper 1
  41
  42 /* Use type int rather than a union, to represent Lisp_Object */
  43
  44 #define NO_UNION_TYPE
  45
  46 /* crt0.c should define a symbol `start' and do .globl with a dot.  */
  47
  48 #define DOT_GLOBAL_START
  49
  50 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  51    the 24-bit bit field into an int.  In other words, if bit fields
  52    are always unsigned.
  53
  54    If you use NO_UNION_TYPE, this flag does not matter.  */
  55
  56 /* #define EXPLICIT_SIGN_EXTEND */
  57
  58 /* USG systems I know of running on Vaxes do not actually
  59    support the load average, so disable it for them.  */
  60
  61 /* Data type of load average, as read out of kmem.  */
  62
  63 #define LOAD_AVE_TYPE double
  64
  65 /* Convert that into an integer that is 100 for a load average of 1.0  */
  66
  67 #define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
  68
  69 /* Define CANNOT_DUMP on machines where unexec does not work.
  70    Then the function dump-emacs will not be defined
  71    and temacs will do (load "loadup") automatically unless told otherwise.  */
  72 /* #define CANNOT_DUMP */
  73
  74 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  75    pure and impure space as loaded can vary, and even their
  76    relative order cannot be relied on.
  77
  78    Otherwise Emacs assumes that text space precedes data space,
  79    numerically.  */
  80
  81 /* #define VIRT_ADDR_VARIES */  /* Karl Kleinpaste says this isn't needed.  */
  82
  83 /* Define NO_REMAP if memory segmentation makes it not work well
  84    to change the boundary between the text section and data section
  85    when Emacs is dumped.  If you define this, the preloaded Lisp
  86    code will not be sharable; but that's better than failing completely.  */
  87
  88 /* #define NO_REMAP */
  89
  90 #ifdef USG
  91 #define TEXT_START 0
  92 #endif /* USG */
  93
  94 #define LD_TEXT_START_ADDR 8000