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comparison nt/src.m.windowsnt.h @ 100:4be1180a9e89 r20-1b2

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Import from CVS: tag r20-1b2
author cvs
date Mon, 13 Aug 2007 09:15:11 +0200
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99:2d83cbd90d8d 100:4be1180a9e89
1 /* Machine description file for Windows NT.
2
3 Copyright (C) 1993, 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 GNU Emacs; 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 /* The following line tells the configuration script what sort of
25 operating system this machine is likely to run.
26 USUAL-OPSYS="<name of system .h file here, without the s- or .h>" */
27
28 /* Define BIG_ENDIAN iff lowest-numbered byte in a word
29 is the most significant byte. */
30
31 /* #define BIG_ENDIAN */
32
33 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
34 * group of arguments and treat it as an array of the arguments. */
35
36 #define NO_ARG_ARRAY
37
38 /* Define WORD_MACHINE if addresses and such have
39 * to be corrected before they can be used as byte counts. */
40
41 #define WORD_MACHINE
42
43 /* Now define a symbol for the cpu type, if your compiler
44 does not define it automatically:
45 Ones defined so far include vax, m68000, ns16000, pyramid,
46 orion, tahoe, APOLLO and many others */
47
48 /* Use type int rather than a union, to represent Lisp_Object */
49 /* This is desirable for most machines. */
50
51 #define NO_UNION_TYPE
52
53 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
54 the 24-bit bit field into an int. In other words, if bit fields
55 are always unsigned.
56
57 If you use NO_UNION_TYPE, this flag does not matter. */
58
59 #define EXPLICIT_SIGN_EXTEND
60
61 /* Data type of load average, as read out of kmem. */
62
63 #define LOAD_AVE_TYPE long
64
65 /* Convert that into an integer that is 100 for a load average of 1.0 */
66
67 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
68
69 /* Define CANNOT_DUMP on machines where unexec does not work.
70 Then the function dump-emacs will not be defined
71 and temacs will do (load "loadup") automatically unless told otherwise. */
72
73
74 #if 0
75 #define CANNOT_DUMP 1
76 #define CANNOT_UNEXEC 1
77 #endif
78
79 /* Start and end of text and data. */
80 #define DATA_END get_data_end ()
81 #define DATA_START get_data_start ()
82
83 /* Define VIRT_ADDR_VARIES if the virtual addresses of
84 pure and impure space as loaded can vary, and even their
85 relative order cannot be relied on.
86
87 Otherwise Emacs assumes that text space precedes data space,
88 numerically. */
89
90 /* Text does precede data space, but this is never a safe assumption. */
91 #define VIRT_ADDR_VARIES
92
93 /* Define C_ALLOCA if this machine does not support a true alloca
94 and the one written in C should be used instead.
95 Define HAVE_ALLOCA to say that the system provides a properly
96 working alloca function and it should be used.
97 Define neither one if an assembler-language alloca
98 in the file alloca.s should be used. */
99
100 /* #define C_ALLOCA */
101 #include <malloc.h>
102 #define HAVE_ALLOCA
103
104 /* Define NO_REMAP if memory segmentation makes it not work well
105 to change the boundary between the text section and data section
106 when Emacs is dumped. If you define this, the preloaded Lisp
107 code will not be sharable; but that's better than failing completely. */
108
109 /* #define NO_REMAP */
110
111 /* Some really obscure 4.2-based systems (like Sequent DYNIX)
112 * do not support asynchronous I/O (using SIGIO) on sockets,
113 * even though it works fine on tty's. If you have one of
114 * these systems, define the following, and then use it in
115 * config.h (or elsewhere) to decide when (not) to use SIGIO.
116 *
117 * You'd think this would go in an operating-system description file,
118 * but since it only occurs on some, but not all, BSD systems, the
119 * reasonable place to select for it is in the machine description
120 * file.
121 */
122
123 /* #define NO_SOCK_SIGIO */
124
125 /* After adding support for a new system, modify the large case
126 statement in the `configure' script to recognize reasonable
127 configuration names, and add a description of the system to
128 `etc/MACHINES'.
129
130 If you've just fixed a problem in an existing configuration file,
131 you should also check `etc/MACHINES' to make sure its descriptions
132 of known problems in that configuration should be updated. */