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comparison src/m/mips.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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1 /* m- file for Mips machines.
2 Copyright (C) 1987, 1992 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 m-mips4.h for RISCOS version 4; use s-bsd4-3.h with the BSD world.
29 Note that the proper m- file for the Decstation is m-pmax.h.
30 NOTE-END */
31
32 /* Define WORD_MACHINE if addresses and such have
33 * to be corrected before they can be used as byte counts. */
34
35 #undef WORD_MACHINE
36
37 /* Define how to take a char and sign-extend into an int.
38 On machines where char is signed, this is a no-op. */
39
40 #define SIGN_EXTEND_CHAR(c) ((signed char)(c))
41
42 /* Now define a symbol for the cpu type, if your compiler
43 does not define it automatically:
44 Ones defined so far include vax, m68000, ns16000, pyramid,
45 orion, tahoe, APOLLO and many others */
46 #ifndef mips
47 # define mips
48 #endif
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 / 256.0)
65
66 /* CDC EP/IX 1.4.3 uses /unix */
67
68 #undef KERNEL_FILE
69 #define KERNEL_FILE "/unix"
70
71 /* Define CANNOT_DUMP on machines where unexec does not work.
72 Then the function dump-emacs will not be defined
73 and temacs will do (load "loadup") automatically unless told otherwise. */
74
75 #undef CANNOT_DUMP
76
77 /* Define VIRT_ADDR_VARIES if the virtual addresses of
78 pure and impure space as loaded can vary, and even their
79 relative order cannot be relied on.
80
81 Otherwise Emacs assumes that text space precedes data space,
82 numerically. */
83
84 /* #define VIRT_ADDR_VARIES */
85
86 /* Define C_ALLOCA if this machine does not support a true alloca
87 and the one written in C should be used instead.
88 Define HAVE_ALLOCA to say that the system provides a properly
89 working alloca function and it should be used.
90 Define neither one if an assembler-language alloca
91 in the file alloca.s should be used. */
92
93 #ifdef __GNUC__
94 #define HAVE_ALLOCA
95 #else
96 #define C_ALLOCA
97 #endif
98
99 /* Define NO_REMAP if memory segmentation makes it not work well
100 to change the boundary between the text section and data section
101 when Emacs is dumped. If you define this, the preloaded Lisp
102 code will not be sharable; but that's better than failing completely. */
103
104 #define NO_REMAP
105
106 /* This machine requires completely different unexec code
107 which lives in a separate file. Specify the file name. */
108
109 #define UNEXEC unexmips.o
110
111 /* Describe layout of the address space in an executing process. */
112
113 #define TEXT_START 0x400000
114 #define DATA_START 0x800000
115
116 /* Alter some of the options used when linking. */
117
118 #ifndef NEWSOS5
119 #ifdef BSD
120
121 /* DECstations don't have this library.
122 #define LIBS_MACHINE -lmld */
123
124 #define LD_SWITCH_MACHINE -D 800000
125 #define LIBS_DEBUG
126
127 #define LINKER /bsd43/bin/ld
128
129 #else /* not BSD */
130
131 #define LIBS_MACHINE -lmld
132 #define LD_SWITCH_MACHINE -D 800000 -g3
133 #define START_FILES pre-crt0.o /usr/lib/crt1.o
134 #define LIB_STANDARD -lbsd -lc /usr/lib/crtn.o
135 #define LIBS_TERMCAP -lcurses
136
137 #define C_SWITCH_MACHINE -I/usr/include/bsd
138 #define C_DEBUG_SWITCH -O -g3
139
140 #endif /* not BSD */
141 #endif /* not NEWSOS5 */
142
143 #ifndef NEWSOS5
144 #ifdef USG
145
146 /* Don't try to use SIGIO even though it is defined. */
147 #define BROKEN_SIGIO
148
149 /* Describe special kernel features. */
150
151 #if defined(emacs) && !defined(INHIBIT_BSD_TIME)
152 #include <bsd/sys/time.h>
153 #endif
154
155 /* The `select' in the system won't work for pipes, so don't use it. */
156 #undef HAVE_SELECT /* override configuration decision */
157
158 #define HAVE_PTYS
159
160 /* ??? */
161 #define IRIS
162
163 #endif /* USG */
164
165 #ifdef BSD
166 #define COFF
167 #define TERMINFO
168 #undef MAIL_USE_FLOCK /* Someone should check this. */
169 #undef HAVE_UNION_WAIT
170 #endif /* BSD */
171 #endif /* not NEWSOS5 */