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