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20c428fd JB |
1 | /* machine description file for Sun 68000's |
2 | Copyright (C) 1985, 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 | |
17385adc | 8 | the Free Software Foundation; either version 2, or (at your option) |
20c428fd JB |
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 | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
20c428fd JB |
20 | |
21 | ||
22 | /* The following line tells the configuration script what sort of | |
23 | operating system this machine is likely to run. | |
24 | USUAL-OPSYS="note" | |
25 | ||
26 | NOTE-START | |
27 | Sun 1, 2 and 3 (-machine=sun1, -machine=sun2, -machine=sun3; | |
28 | -opsystem=bsd4-2 or -opsystem=sunos4) | |
29 | ||
30 | Whether you should use sun1, sun2 or sun3 depends on the | |
31 | VERSION OF THE OPERATING SYSTEM | |
32 | you have. There are three machine types for different versions of | |
33 | SunOS. All are derived from Berkeley 4.2, meaning that you should | |
34 | use -opsystem=bsd4-2. Emacs 17 has run on all of them. You will | |
35 | need to use sun3 on Sun 2's running SunOS release 3. | |
36 | ||
37 | For SunOS release 4 on a Sun 3, use -machine=sun3 and | |
38 | -opsystem=sunos4. See the file share-lib/SUNBUG for how to solve | |
39 | problems caused by bugs in the "export" version of SunOS 4. | |
40 | NOTE-END */ | |
41 | ||
74d3f806 KH |
42 | /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word |
43 | is the most significant byte. */ | |
44 | ||
45 | #define WORDS_BIG_ENDIAN | |
46 | ||
20c428fd JB |
47 | /* Say this machine is a 68000 */ |
48 | ||
49 | #define m68000 | |
50 | ||
51 | /* Use type int rather than a union, to represent Lisp_Object */ | |
52 | ||
53 | #define NO_UNION_TYPE | |
54 | ||
eb8c3be9 | 55 | /* Sun can't write competent compilers */ |
20c428fd JB |
56 | #define COMPILER_REGISTER_BUG |
57 | ||
58 | /* XINT must explicitly sign-extend */ | |
59 | ||
60 | #define EXPLICIT_SIGN_EXTEND | |
61 | ||
62 | /* Data type of load average, as read out of kmem. */ | |
63 | ||
64 | #define LOAD_AVE_TYPE long | |
65 | ||
66 | /* Convert that into an integer that is 100 for a load average of 1.0 */ | |
67 | ||
68 | #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE) | |
69 | ||
70 | /* Must use the system's termcap. It does special things. */ | |
71 | ||
72 | #define LIBS_TERMCAP -ltermcap | |
73 | ||
74 | /* Mask for address bits within a memory segment */ | |
75 | ||
76 | #define SEGMENT_MASK (SEGSIZ - 1) |