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comparison src/m/isi-ov.h @ 0:376386a54a3c r19-14

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Import from CVS: tag r19-14
author cvs
date Mon, 13 Aug 2007 08:45:50 +0200
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children 0132846995bd
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-1:000000000000 0:376386a54a3c
1 /* machine description file for ISI 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
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 XEmacs; 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 /* Synched up with: FSF 19.31. */
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
27 NOTE-START
28 Use `-opsystem=bsd4-2' or `-opsystem=bsd4-3'.
29 NOTE-END */
30
31 #define ISI68K
32
33 /* Say this machine is a 68000 */
34
35 #define m68000
36
37 /* XINT must explicitly sign-extend */
38
39 #define EXPLICIT_SIGN_EXTEND
40
41 /* Data type of load average, as read out of kmem. */
42
43 #ifdef BSD4_3
44 #define LOAD_AVE_TYPE long
45 #else
46 #define LOAD_AVE_TYPE double
47 #endif BSD4_3
48
49 /* Convert that into an integer that is 100 for a load average of 1.0 */
50
51 #ifdef BSD4_3
52 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
53 #else
54 #define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
55 #endif
56
57 /* Mask for address bits within a memory segment */
58
59 #define SEGMENT_MASK 0x1ffff
60
61 /* use the -20 switch to get the 68020 code */
62 /* #define C_SWITCH_MACHINE -20 */
63
64 /* Use the version of the library for the 68020
65 because the standard library requires some special hacks in crt0
66 which the GNU crt0 does not have. */
67
68 #define LIB_STANDARD -lmc
69
70 /* macros to make unexec work right */
71
72 #define A_TEXT_OFFSET(HDR) sizeof(HDR)
73 #define A_TEXT_SEEK(HDR) sizeof(HDR)
74
75 /* A few changes for the newer systems. */
76
77 #ifdef BSD4_3
78 #define HAVE_ALLOCA
79 /* The following line affects crt0.c. */
80 #undef m68k
81
82 #undef LIB_STANDARD
83 #define LIB_STANDARD -lmc -lc
84 #define C_DEBUG_SWITCH -20 -O -X23
85 #endif