src/m/sequent.h

   1 /* machine description file for SEQUENT BALANCE machines
   2    Copyright (C) 1985, 1986, 2002, 2003, 2004,
   3                  2005, 2006 Free Software Foundation, Inc.
   4
   5 This file is part of GNU Emacs.
   6
   7 GNU Emacs is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GNU Emacs is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU Emacs; see the file COPYING.  If not, write to
  19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20 Boston, MA 02110-1301, USA.  */
  21
  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 WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
  35    is the most significant byte.  */
  36
  37 #undef WORDS_BIG_ENDIAN
  38
  39 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  40  * group of arguments and treat it as an array of the arguments.  */
  41
  42 /* #define NO_ARG_ARRAY */
  43
  44 /* Define WORD_MACHINE if addresses and such have
  45  * to be corrected before they can be used as byte counts.  */
  46
  47 /* #define WORD_MACHINE */
  48
  49 /* Now define a symbol for the cpu type, if your compiler
  50    does not define it automatically:
  51    vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
  52    are the ones defined so far.  */
  53
  54 /* BTW: DYNIX defines sequent, ns32000, and ns16000 (GENIX compatibility) */
  55 #ifndef sequent         /* pre DYNIX 2.1 releases */
  56 # define sequent
  57 #endif
  58
  59 /* Use type int rather than a union, to represent Lisp_Object */
  60 /* This is desirable for most machines.  */
  61
  62 #define NO_UNION_TYPE
  63
  64 /* crt0.c should use the vax-bsd style of entry, with these dummy args.  */
  65
  66 #define CRT0_DUMMIES bogus_fp,
  67
  68 /* crt0.c should define a symbol `start' and do .globl with a dot.  */
  69
  70 #define DOT_GLOBAL_START
  71
  72 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  73    the 24-bit bit field into an int.  In other words, if bit fields
  74    are always unsigned.
  75
  76    If you use NO_UNION_TYPE, this flag does not matter.  */
  77
  78 #define EXPLICIT_SIGN_EXTEND
  79
  80 /* Data type of load average, as read out of kmem.  */
  81
  82 #define LOAD_AVE_TYPE unsigned long
  83
  84 /* Convert that into an integer that is 100 for a load average of 1.0  */
  85
  86 #define FSCALE  1000.0
  87 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
  88
  89 /* Define CANNOT_DUMP on machines where unexec does not work.
  90    Then the function dump-emacs will not be defined
  91    and temacs will do (load "loadup") automatically unless told otherwise.  */
  92
  93 /* #define CANNOT_DUMP */
  94
  95 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  96    pure and impure space as loaded can vary, and even their
  97    relative order cannot be relied on.
  98
  99    Otherwise Emacs assumes that text space precedes data space,
 100    numerically.  */
 101
 102 /* #define VIRT_ADDR_VARIES */
 103
 104 /* Name of file the to look in
 105    for the kernel symbol table (for load average) */
 106
 107 #undef KERNEL_FILE
 108 #define KERNEL_FILE "/dynix"
 109
 110 /* Avoids a compiler bug */
 111
 112 #define TAHOE_REGISTER_BUG
 113
 114 /* Say that the text segment of a.out includes the header;
 115    the header actually occupies the first few bytes of the text segment
 116    and is counted in hdr.a_text.  Furthermore, the value written
 117    in the a_text in the file must have N_ADDRADJ added to it.  */
 118
 119 #define A_TEXT_OFFSET(HDR) (sizeof (HDR) + N_ADDRADJ (HDR))
 120
 121 /* This is the offset of the executable's text, from the start of the file.  */
 122
 123 #define A_TEXT_SEEK(HDR) (N_TXTOFF (hdr) + sizeof (hdr))
 124
 125 /* (short) negative-int doesn't sign-extend correctly */
 126 #define SHORT_CAST_BUG
 127
 128 /* Cause compilations to be done in parallel in ymakefile.  */
 129 #define MAKE_PARALLEL &
 130
 131 /* Say that mailer interlocking uses flock.  */
 132 #define MAIL_USE_FLOCK
 133
 134 /* On many 4.2-based systems, there's a rather tricky bug
 135  * with the interpretation of the pid/pgrp value given to
 136  * the F_SETOWN fcntl() call.  It works as documented EXCEPT
 137  * when applied to filedescriptors for sockets, in which case
 138  * the sign must be reversed.  If your emacs subprocesses get
 139  * SIGIO's when they shouldn't, while running on a socket
 140  * (e.g. under X windows), you should probably define this.
 141  */
 142
 143 #define F_SETOWN_SOCK_NEG
 144
 145 /* Some really obscure 4.2-based systems (like Sequent DYNIX)
 146  * do not support asynchronous I/O (using SIGIO) on sockets,
 147  * even though it works fine on tty's.  If you have one of
 148  * these systems, define the following, and then use it in
 149  * config.h (or elsewhere) to decide when (not) to use SIGIO.
 150  */
 151
 152 #define NO_SOCK_SIGIO
 153
 154 /* Define how to search all pty names.
 155    This is for Dynix 3.0; delete next 5 definitions for older systems.  */
 156
 157 #define PTY_MAJOR "pqrstuvwPQRSTUVW"
 158 #define PTY_MINOR "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
 159 #define PTY_ITERATION                                   \
 160   register int ma, mi;                                  \
 161   for (ma = 0; ma < sizeof(PTY_MAJOR) - 1; ma++)        \
 162     for (mi = 0; mi < sizeof(PTY_MINOR) - 1; mi++)
 163 #define PTY_NAME_SPRINTF \
 164   sprintf (ptyname, "/dev/pty%c%c", PTY_MAJOR[ma], PTY_MINOR[mi]);
 165 #define PTY_TTY_NAME_SPRINTF \
 166   sprintf (ptyname, "/dev/tty%c%c", PTY_MAJOR[ma], PTY_MINOR[mi]);
 167
 168 /* arch-tag: 81caea48-aa64-4021-9544-e969dea71ee8
 169    (do not change this comment) */