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20c428fd JB |
1 | /* machine description file for SEQUENT BALANCE machines |
2 | Copyright (C) 1985, 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 | |
17385adc | 8 | the Free Software Foundation; either version 2, or (at your option) |
20c428fd JB |
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 GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | ||
21 | /* The following line tells the configuration script what sort of | |
22 | operating system this machine is likely to run. | |
23 | USUAL-OPSYS="note" | |
24 | ||
25 | NOTE-START | |
26 | Use -opsystem=bsd4-2, or -opsystem=bsd4-3 on newer systems. | |
27 | NOTE-END */ | |
28 | ||
29 | /* NOTE: this file works for DYNIX release 2.0 | |
30 | (not tested on 1.3) on NS32000's */ | |
31 | ||
32 | /* The following three symbols give information on | |
33 | the size of various data types. */ | |
34 | ||
35 | #define SHORTBITS 16 /* Number of bits in a short */ | |
36 | ||
37 | #define INTBITS 32 /* Number of bits in an int */ | |
38 | ||
39 | #define LONGBITS 32 /* Number of bits in a long */ | |
40 | ||
74d3f806 KH |
41 | /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word |
42 | is the most significant byte. */ | |
43 | ||
44 | #undef WORDS_BIG_ENDIAN | |
45 | ||
20c428fd JB |
46 | /* Define NO_ARG_ARRAY if you cannot take the address of the first of a |
47 | * group of arguments and treat it as an array of the arguments. */ | |
48 | ||
49 | /* #define NO_ARG_ARRAY */ | |
50 | ||
51 | /* Define WORD_MACHINE if addresses and such have | |
52 | * to be corrected before they can be used as byte counts. */ | |
53 | ||
54 | /* #define WORD_MACHINE */ | |
55 | ||
20c428fd JB |
56 | /* Now define a symbol for the cpu type, if your compiler |
57 | does not define it automatically: | |
58 | vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO | |
59 | are the ones defined so far. */ | |
60 | ||
61 | /* BTW: DYNIX defines sequent, ns32000, and ns16000 (GENIX compatibility) */ | |
62 | #ifndef sequent /* pre DYNIX 2.1 releases */ | |
63 | # define sequent | |
64 | #endif | |
65 | ||
66 | /* Use type int rather than a union, to represent Lisp_Object */ | |
67 | /* This is desirable for most machines. */ | |
68 | ||
69 | #define NO_UNION_TYPE | |
70 | ||
71 | /* crt0.c should use the vax-bsd style of entry, with these dummy args. */ | |
72 | ||
73 | #define CRT0_DUMMIES bogus_fp, | |
74 | ||
75 | /* crt0.c should define a symbol `start' and do .globl with a dot. */ | |
76 | ||
77 | #define DOT_GLOBAL_START | |
78 | ||
79 | /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend | |
80 | the 24-bit bit field into an int. In other words, if bit fields | |
81 | are always unsigned. | |
82 | ||
83 | If you use NO_UNION_TYPE, this flag does not matter. */ | |
84 | ||
85 | #define EXPLICIT_SIGN_EXTEND | |
86 | ||
87 | /* Data type of load average, as read out of kmem. */ | |
88 | ||
89 | #define LOAD_AVE_TYPE unsigned long | |
90 | ||
91 | /* Convert that into an integer that is 100 for a load average of 1.0 */ | |
92 | ||
93 | #define FSCALE 1000.0 | |
94 | #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE) | |
95 | ||
96 | /* Define CANNOT_DUMP on machines where unexec does not work. | |
97 | Then the function dump-emacs will not be defined | |
98 | and temacs will do (load "loadup") automatically unless told otherwise. */ | |
99 | ||
100 | /* #define CANNOT_DUMP */ | |
101 | ||
102 | /* Define VIRT_ADDR_VARIES if the virtual addresses of | |
103 | pure and impure space as loaded can vary, and even their | |
104 | relative order cannot be relied on. | |
105 | ||
106 | Otherwise Emacs assumes that text space precedes data space, | |
107 | numerically. */ | |
108 | ||
109 | /* #define VIRT_ADDR_VARIES */ | |
110 | ||
111 | /* Define C_ALLOCA if this machine does not support a true alloca | |
112 | and the one written in C should be used instead. | |
113 | Define HAVE_ALLOCA to say that the system provides a properly | |
114 | working alloca function and it should be used. | |
115 | Define neither one if an assembler-language alloca | |
116 | in the file alloca.s should be used. */ | |
117 | ||
118 | /* #define C_ALLOCA */ | |
119 | #define HAVE_ALLOCA | |
120 | ||
121 | /* Name of file the to look in | |
122 | for the kernel symbol table (for load average) */ | |
123 | ||
124 | #undef KERNEL_FILE | |
125 | #define KERNEL_FILE "/dynix" | |
126 | ||
127 | /* Avoids a compiler bug */ | |
128 | ||
129 | #define TAHOE_REGISTER_BUG | |
130 | ||
131 | /* Say that the text segment of a.out includes the header; | |
132 | the header actually occupies the first few bytes of the text segment | |
133 | and is counted in hdr.a_text. Furthermore, the value written | |
134 | in the a_text in the file must have N_ADDRADJ added to it. */ | |
135 | ||
136 | #define A_TEXT_OFFSET(HDR) (sizeof (HDR) + N_ADDRADJ (HDR)) | |
137 | ||
138 | /* This is the offset of the executable's text, from the start of the file. */ | |
139 | ||
140 | #define A_TEXT_SEEK(HDR) (N_TXTOFF (hdr) + sizeof (hdr)) | |
141 | ||
142 | /* (short) negative-int doesn't sign-extend correctly */ | |
143 | #define SHORT_CAST_BUG | |
144 | ||
145 | /* Cause compilations to be done in parallel in ymakefile. */ | |
146 | #define MAKE_PARALLEL & | |
147 | ||
148 | /* Say that mailer interlocking uses flock. */ | |
149 | #define MAIL_USE_FLOCK | |
150 | ||
151 | /* On many 4.2-based systems, there's a rather tricky bug | |
152 | * with the interpretation of the pid/pgrp value given to | |
153 | * the F_SETOWN fcntl() call. It works as documented EXCEPT | |
154 | * when applied to filedescriptors for sockets, in which case | |
155 | * the sign must be reversed. If your emacs subprocesses get | |
156 | * SIGIO's when they shouldn't, while running on a socket | |
157 | * (e.g. under X windows), you should probably define this. | |
158 | */ | |
159 | ||
160 | #define F_SETOWN_SOCK_NEG | |
161 | ||
162 | /* Some really obscure 4.2-based systems (like Sequent DYNIX) | |
163 | * do not support asynchronous I/O (using SIGIO) on sockets, | |
164 | * even though it works fine on tty's. If you have one of | |
165 | * these systems, define the following, and then use it in | |
166 | * config.h (or elsewhere) to decide when (not) to use SIGIO. | |
167 | */ | |
168 | ||
169 | #define NO_SOCK_SIGIO | |
170 | ||
171 | /* Define how to search all pty names. | |
172 | This is for Dynix 3.0; delete next 5 definitions for older systems. */ | |
173 | ||
174 | #define PTY_MAJOR "pqrstuvwPQRSTUVW" | |
175 | #define PTY_MINOR "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
176 | #define PTY_ITERATION \ | |
177 | register int ma, mi; \ | |
178 | for (ma = 0; ma < sizeof(PTY_MAJOR) - 1; ma++) \ | |
179 | for (mi = 0; mi < sizeof(PTY_MINOR) - 1; mi++) | |
180 | #define PTY_NAME_SPRINTF \ | |
181 | sprintf (ptyname, "/dev/pty%c%c", PTY_MAJOR[ma], PTY_MINOR[mi]); | |
182 | #define PTY_TTY_NAME_SPRINTF \ | |
183 | sprintf (ptyname, "/dev/tty%c%c", PTY_MAJOR[ma], PTY_MINOR[mi]); |