code.delx.au - gnu-emacs/blob - src/m/sequent.h

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