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comparison src/m/nh4000.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 a86b2b5e0111 abe6d1db359e
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1 /* machine description for Harris NightHawk 88k based machines
2 (includes nh4000 and nh5000 machines).
3 Copyright (C) 1994 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 2, 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 XEmacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
21
22 /* Synched up with: FSF 19.31. */
23
24 /* This file manually constructed for Harris Night Hawk 4000 (and 5000)
25 * series Motorola 88100 and 88110 based machines.
26 */
27
28 /* The following line tells the configuration script what sort of
29 operating system this machine is likely to run.
30 USUAL-OPSYS="<name of system .h file here, without the s- or .h>" */
31
32 /* Define WORD_MACHINE if addresses and such have
33 * to be corrected before they can be used as byte counts. */
34
35 /* #define WORD_MACHINE */
36
37 /* Now define a symbol for the cpu type, if your compiler
38 does not define it automatically:
39 Ones defined so far include vax, m68000, ns16000, pyramid,
40 orion, tahoe, APOLLO and many others */
41
42 #ifndef m88000
43 #define m88000
44 #endif
45
46 #define VALBITS 26
47
48 #define GCTYPEBITS 5
49
50 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
51 the bit field into an int. In other words, if bit fields
52 are always unsigned.
53
54 If you use NO_UNION_TYPE, this flag does not matter. */
55
56 /* #define EXPLICIT_SIGN_EXTEND */
57
58 /* Data type of load average, as read out of kmem. */
59
60 #define LOAD_AVE_TYPE long
61
62 /* Convert that into an integer that is 100 for a load average of 1.0 */
63
64 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
65
66 /* Define CANNOT_DUMP on machines where unexec does not work.
67 Then the function dump-emacs will not be defined
68 and temacs will do (load "loadup") automatically unless told otherwise. */
69
70 /* #define CANNOT_DUMP */
71
72 /* Define VIRT_ADDR_VARIES if the virtual addresses of
73 pure and impure space as loaded can vary, and even their
74 relative order cannot be relied on.
75
76 Otherwise Emacs assumes that text space precedes data space,
77 numerically. */
78
79 /* #define VIRT_ADDR_VARIES */
80
81 /* Define C_ALLOCA if this machine does not support a true alloca
82 and the one written in C should be used instead.
83 Define HAVE_ALLOCA to say that the system provides a properly
84 working alloca function and it should be used.
85 Define neither one if an assembler-language alloca
86 in the file alloca.s should be used. */
87
88 /* #define C_ALLOCA */
89 #define HAVE_ALLOCA
90
91 /* Define NO_REMAP if memory segmentation makes it not work well
92 to change the boundary between the text section and data section
93 when Emacs is dumped. If you define this, the preloaded Lisp
94 code will not be sharable; but that's better than failing completely. */
95
96 #define NO_REMAP
97
98 /* Some really obscure 4.2-based systems (like Sequent DYNIX)
99 * do not support asynchronous I/O (using SIGIO) on sockets,
100 * even though it works fine on tty's. If you have one of
101 * these systems, define the following, and then use it in
102 * config.h (or elsewhere) to decide when (not) to use SIGIO.
103 *
104 * You'd think this would go in an operating-system description file,
105 * but since it only occurs on some, but not all, BSD systems, the
106 * reasonable place to select for it is in the machine description
107 * file.
108 */
109
110 /* #define NO_SOCK_SIGIO */