annotate src/m/sun1.h @ 400:a86b2b5e0111 r21-2-30

Import from CVS: tag r21-2-30
author cvs
date Mon, 13 Aug 2007 11:14:34 +0200
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children 697ef44129c6
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1 /* machine description file for Sun 68000's
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2 Copyright (C) 1985, 1986 Free Software Foundation, Inc.
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3
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4 This file is part of GNU Emacs.
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5
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6 GNU Emacs is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 2, or (at your option)
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9 any later version.
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10
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11 GNU Emacs is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: FSF 19.31. */
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22
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23 /* The following line tells the configuration script what sort of
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24 operating system this machine is likely to run.
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25 USUAL-OPSYS="note"
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26
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27 NOTE-START
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28 Sun 1, 2 and 3 (-machine=sun1, -machine=sun2, -machine=sun3;
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29 -opsystem=bsd4-2 or -opsystem=sunos4)
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30
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31 Whether you should use sun1, sun2 or sun3 depends on the
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32 VERSION OF THE OPERATING SYSTEM
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33 you have. There are three machine types for different versions of
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34 SunOS. All are derived from Berkeley 4.2, meaning that you should
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35 use -opsystem=bsd4-2. Emacs 17 has run on all of them. You will
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36 need to use sun3 on Sun 2's running SunOS release 3.
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37
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38 For SunOS release 4 on a Sun 3, use -machine=sun3 and
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39 -opsystem=sunos4. See the file share-lib/SUNBUG for how to solve
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40 problems caused by bugs in the "export" version of SunOS 4.
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41 NOTE-END */
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42
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43 /* Say this machine is a 68000 */
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44
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45 #define m68000
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46
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47 /* Sun can't write competent compilers */
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48 #define COMPILER_REGISTER_BUG
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49
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50 /* Data type of load average, as read out of kmem. */
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51
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52 #define LOAD_AVE_TYPE long
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53
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54 /* Convert that into an integer that is 100 for a load average of 1.0 */
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55
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56 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
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57
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58 /* Must use the system's termcap. It does special things. */
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59
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60 #define LIBS_TERMCAP "-ltermcap"
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61
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62 /* Mask for address bits within a memory segment */
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63
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64 #define SEGMENT_MASK (SEGSIZ - 1)