1/* machine description file for Sun 68000's
2   Copyright (C) 1985, 1986, 2001, 2002, 2003, 2004,
3                 2005, 2006, 2007  Free Software Foundation, Inc.
4
5This file is part of GNU Emacs.
6
7GNU Emacs is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 2, or (at your option)
10any later version.
11
12GNU Emacs is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with GNU Emacs; see the file COPYING.  If not, write to
19the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20Boston, MA 02110-1301, USA.  */
21
22
23/* The following line tells the configuration script what sort of
24   operating system this machine is likely to run.
25   USUAL-OPSYS="note"
26
27NOTE-START
28Sun 1, 2 and 3 (-machine=sun1, -machine=sun2, -machine=sun3;
29                -opsystem=bsd4-2 or -opsystem=sunos4)
30
31  Whether you should use sun1, sun2 or sun3 depends on the
32		   VERSION OF THE OPERATING SYSTEM
33  you have.  There are three machine types for different versions of
34  SunOS.  All are derived from Berkeley 4.2, meaning that you should
35  use -opsystem=bsd4-2.  Emacs 17 has run on all of them.  You will
36  need to use sun3 on Sun 2's running SunOS release 3.
37
38  For SunOS release 4 on a Sun 3, use -machine=sun3 and
39  -opsystem=sunos4.  See the file share-lib/SUNBUG for how to solve
40  problems caused by bugs in the "export" version of SunOS 4.
41NOTE-END  */
42
43/* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
44   is the most significant byte.  */
45
46#define WORDS_BIG_ENDIAN
47
48/* Say this machine is a 68000 */
49
50#define m68000
51
52/* Use type int rather than a union, to represent Lisp_Object */
53
54#define NO_UNION_TYPE
55
56/* Sun can't write competent compilers */
57#define COMPILER_REGISTER_BUG
58
59/* XINT must explicitly sign-extend */
60
61#define EXPLICIT_SIGN_EXTEND
62
63/* Data type of load average, as read out of kmem.  */
64
65#define LOAD_AVE_TYPE long
66
67/* Convert that into an integer that is 100 for a load average of 1.0  */
68
69#define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
70
71/* Must use the system's termcap.  It does special things.  */
72
73#define LIBS_TERMCAP -ltermcap
74
75/* Mask for address bits within a memory segment */
76
77#define SEGMENT_MASK (SEGSIZ - 1)
78
79/* arch-tag: 58ec9c79-48bd-4d1b-aad1-65a09a6b0d10
80   (do not change this comment) */
81