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comparison src/m/iris4d.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 /* machine description file for Iris-4D machines. Use with s/irix*.h.
2 Copyright (C) 1987 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 /* Define WORD_MACHINE if addresses and such have
24 * to be corrected before they can be used as byte counts. */
25
26 #undef WORD_MACHINE
27
28 /* Now define a symbol for the cpu type, if your compiler
29 does not define it automatically:
30 Ones defined so far include vax, m68000, ns16000, pyramid,
31 orion, tahoe, APOLLO and many others */
32
33 #ifndef mips
34 #define mips
35 #endif
36
37 #ifndef IRIS_4D
38 #define IRIS_4D
39 #endif
40
41 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
42 the bit field into an int. In other words, if bit fields
43 are always unsigned.
44
45 If you use NO_UNION_TYPE, this flag does not matter. */
46
47 #define EXPLICIT_SIGN_EXTEND
48
49 /* jg@genmagic.genmagic.com (John Giannandrea) says this is unnecessary. */
50 #if 0
51 /* Data type of load average, as read out of kmem. */
52
53 #define LOAD_AVE_TYPE long /* This doesn't quite work on the 4D */
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)/1024.0)
58
59 /* s-iris3-6.h uses /vmunix */
60
61 #undef KERNEL_FILE
62 #define KERNEL_FILE "/unix"
63 #endif
64
65 /* Define CANNOT_DUMP on machines where unexec does not work.
66 Then the function dump-emacs will not be defined
67 and temacs will do (load "loadup") automatically unless told otherwise. */
68
69 #undef CANNOT_DUMP
70
71 /* Define VIRT_ADDR_VARIES if the virtual addresses of
72 pure and impure space as loaded can vary, and even their
73 relative order cannot be relied on.
74
75 Otherwise Emacs assumes that text space precedes data space,
76 numerically. */
77
78 /* #define VIRT_ADDR_VARIES */
79
80 /* Define C_ALLOCA if this machine does not support a true alloca
81 and the one written in C should be used instead.
82 Define HAVE_ALLOCA to say that the system provides a properly
83 working alloca function and it should be used.
84 Define neither one if an assembler-language alloca
85 in the file alloca.s should be used. */
86
87 /* #define C_ALLOCA */ /* Sjoerd.Mullender@cwi.nl says no need. */
88 /* #define HAVE_ALLOCA */
89
90 /* Define NO_REMAP if memory segmentation makes it not work well
91 to change the boundary between the text section and data section
92 when Emacs is dumped. If you define this, the preloaded Lisp
93 code will not be sharable; but that's better than failing completely. */
94
95 #define NO_REMAP
96
97 /* This machine requires completely different unexec code
98 which lives in a separate file. Specify the file name. */
99
100 #ifdef USG5_4
101 #undef UNEXEC
102 /* FSF renames this file to unexsgi.o */
103 #define UNEXEC unexelfsgi.o
104 #else
105 #define UNEXEC unexmips.o
106 #endif
107
108 #define TEXT_START 0x400000
109
110 /*
111 * DATA_SEG_BITS forces extra bits to be or'd in with any pointers which
112 * were stored in a Lisp_Object (as Emacs uses fewer than 32 bits for
113 * the value field of a LISP_OBJECT).
114 */
115
116 #define DATA_START 0x10000000
117 #define DATA_SEG_BITS 0x10000000
118
119 #undef LIBS_MACHINE
120 /* -lsun in case using Yellow Pages for passwords. */
121 #define LIBS_MACHINE -lmld
122 #define LIBS_DEBUG
123
124 /* Define this if you have a fairly recent system,
125 in which crt1.o and crt1.n should be used. */
126 #define HAVE_CRTN
127
128 #ifndef USG5_4
129 #ifdef HAVE_CRTN
130 /* Must define START-FILES so that the linker can find /usr/lib/crt0.o. */
131 #define START_FILES pre-crt0.o /usr/lib/crt1.o
132 #define LIB_STANDARD -lc /usr/lib/crtn.o
133 #else
134 #define START_FILES pre-crt0.o /usr/lib/crt0.o
135 /* The entry-point label (start of text segment) is `start', not `__start'. */
136 #define DEFAULT_ENTRY_ADDRESS start
137 #define LIB_STANDARD -lc
138 #endif
139 #endif
140
141 /* Use terminfo instead of termcap. */
142
143 #define TERMINFO
144
145 /* Letter to use in finding device name of first pty,
146 if system supports pty's. 'a' means it is /dev/ptya0 */
147
148 #undef FIRST_PTY_LETTER
149 #define FIRST_PTY_LETTER 'q'
150
151 /* Define STACK_DIRECTION for alloca.c */
152
153 #undef STACK_DIRECTION
154 #define STACK_DIRECTION -1
155
156 #ifndef __GNUC__
157 /* Turn off some "helpful" error checks for type mismatches
158 that we can't fix without breaking other machines. */
159 #ifdef IRIX_FORCE_32_BITS
160 #ifdef THIS_IS_MAKEFILE
161 #define C_SWITCH_MACHINE -32
162 #endif
163 #endif /* IRIX_FORCE_32_BITS */
164 #endif /* not __GNUC__ */