Mercurial > hg > xemacs-beta

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

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Import from CVS: tag r19-14
author cvs
date Mon, 13 Aug 2007 08:45:50 +0200
parents
children 0132846995bd
comparison
equal deleted inserted replaced
-1:000000000000 0:376386a54a3c
1 /* RTPC machine dependent defines
2 Copyright (C) 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="bsd4-2" */
26
27 /* Define WORD_MACHINE if addresses and such have
28 * to be corrected before they can be used as byte counts. */
29
30 #define WORD_MACHINE
31
32 /* Now define a symbol for the cpu type, if your compiler
33 does not define it automatically. */
34
35 /* XEmacs change */
36 #ifndef ibmrt
37 #define ibmrt
38 #endif
39 #ifndef romp
40 #define romp /* unfortunately old include files are hanging around. */
41 #endif
42
43 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
44 the bit field into an int. In other words, if bit fields
45 are always unsigned.
46
47 If you use NO_UNION_TYPE, this flag does not matter. */
48
49 #define EXPLICIT_SIGN_EXTEND
50
51 /* Data type of load average, as read out of kmem. */
52
53 #define LOAD_AVE_TYPE double /* For AIS (sysV) */
54
55 /* Convert that into an integer that is 100 for a load average of 1.0 */
56
57 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0)
58
59 /* Define CANNOT_DUMP on machines where unexec does not work.
60 Then the function dump-emacs will not be defined
61 and temacs will do (load "loadup") automatically unless told otherwise. */
62
63 /* #define CANNOT_DUMP */
64
65 /* Define VIRT_ADDR_VARIES if the virtual addresses of
66 pure and impure space as loaded can vary, and even their
67 relative order cannot be relied on.
68
69 Otherwise Emacs assumes that text space precedes data space,
70 numerically. */
71
72 #undef VIRT_ADDR_VARIES
73
74 /* Define C_ALLOCA if this machine does not support a true alloca
75 and the one written in C should be used instead.
76 Define HAVE_ALLOCA to say that the system provides a properly
77 working alloca function and it should be used.
78 Define neither one if an assembler-language alloca
79 in the file alloca.s should be used. */
80
81 #define HAVE_ALLOCA
82
83 /* The data segment in this machine starts at a fixed address.
84 An address of data cannot be stored correctly in a Lisp object;
85 we always lose the high bits. We must tell XPNTR to add them back. */
86
87 #define DATA_SEG_BITS 0x10000000
88 #define DATA_START 0x10000000
89
90 /* The text segment always starts at a fixed address.
91 This way we don't need to have a label _start defined. */
92 #define TEXT_START 0
93
94 /* Taking a pointer to a char casting it as int pointer */
95 /* and then taking the int which the int pointer points to */
96 /* is practically guaranteed to give erroneous results */
97
98 #define NEED_ERRNO
99
100 #define SKTPAIR
101
102 /* Special switches to give the C compiler. */
103
104 #ifndef __GNUC__
105 #define C_SWITCH_MACHINE -Dalloca=_Alloca
106 #endif
107
108 /* XEmacs addition: */
109 /* Under Mach at least, gcc doesn't seem to work as the linker. */
110 #ifdef MACH
111 #define START_FILES pre-crt0.o
112 #ifdef __GNUC__
113 #define LINKER pcc
114 #endif
115 #endif
116
117 /* Don't attempt to relabel some of the data as text when dumping.
118 It does not work because their virtual addresses are not consecutive.
119 This enables us to use the standard crt0.o. */
120
121 #define NO_REMAP
122
123 /* Use the bitmap files that come with Emacs. */
124 #define EMACS_BITMAP_FILES