src/m/ns32000.h

   1 /* machine description file for National Semiconductor 32000, running Genix.
   2    Copyright (C) 1985, 1986, 2001, 2002, 2003, 2004,
   3                  2005, 2006, 2007, 2008  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 3, 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
  24 /* The following line tells the configuration script what sort of
  25    operating system this machine is likely to run.
  26    USUAL-OPSYS="usg5-2"  */
  27
  28 /* Define WORDS_BIG_ENDIAN if lowest-numbered byte in a word
  29    is the most significant byte.  */
  30
  31 #undef WORDS_BIG_ENDIAN
  32
  33 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  34  * group of arguments and treat it as an array of the arguments.  */
  35
  36 /* #define NO_ARG_ARRAY */
  37
  38 /* Define WORD_MACHINE if addresses and such have
  39  * to be corrected before they can be used as byte counts.  */
  40
  41 /* #define WORD_MACHINE */
  42
  43 /* Now define a symbol for the cpu type, if your compiler
  44    does not define it automatically:
  45    Ones defined so far include vax, m68000, ns16000, pyramid,
  46    orion, tahoe, APOLLO and many others */
  47
  48 /* Use type int rather than a union, to represent Lisp_Object */
  49 /* This is desirable for most machines.  */
  50
  51 #define NO_UNION_TYPE
  52
  53 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  54    the 24-bit bit field into an int.  In other words, if bit fields
  55    are always unsigned.
  56
  57    If you use NO_UNION_TYPE, this flag does not matter.  */
  58
  59 #define EXPLICIT_SIGN_EXTEND
  60
  61 /* Data type of load average, as read out of kmem.  */
  62
  63 /* #define LOAD_AVE_TYPE long */
  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) (((double) (x)) * 100.0 / FSCALE) */
  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
  73 /* #define CANNOT_DUMP */
  74
  75 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  76    pure and impure space as loaded can vary, and even their
  77    relative order cannot be relied on.
  78
  79    Otherwise Emacs assumes that text space precedes data space,
  80    numerically.  */
  81
  82 /* #define VIRT_ADDR_VARIES */
  83
  84 /* Define NO_REMAP if memory segmentation makes it not work well
  85    to change the boundary between the text section and data section
  86    when Emacs is dumped.  If you define this, the preloaded Lisp
  87    code will not be sharable; but that's better than failing completely.  */
  88
  89 /* #define NO_REMAP */
  90
  91 #define TEXT_START 0
  92
  93 #if !defined (__NetBSD__) && !defined (__OpenBSD__)
  94 #define EXEC_MAGIC 0410
  95
  96 #define PURESIZE 140000
  97
  98 #define START_FILES pre-crt0.o /lib/crt0.o
  99 #endif
 100
 101 /* arch-tag: 13dde0e0-8ed5-4bc3-a0dc-5456c9db5f94
 102    (do not change this comment) */