src/m/sequent.h

   1 /* machine description file for SEQUENT BALANCE machines
   2    Copyright (C) 1985, 1986, 2002 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, Inc., 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21
  22 /* The following line tells the configuration script what sort of
  23    operating system this machine is likely to run.
  24    USUAL-OPSYS="note"
  25
  26 NOTE-START
  27 Use -opsystem=bsd4-2, or -opsystem=bsd4-3 on newer systems.
  28 NOTE-END */
  29
  30 /* NOTE: this file works for DYNIX release 2.0
  31           (not tested on 1.3) on NS32000's */
  32
  33 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
  34    is the most significant byte.  */
  35
  36 #undef WORDS_BIG_ENDIAN
  37
  38 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  39  * group of arguments and treat it as an array of the arguments.  */
  40
  41 /* #define NO_ARG_ARRAY */
  42
  43 /* Define WORD_MACHINE if addresses and such have
  44  * to be corrected before they can be used as byte counts.  */
  45
  46 /* #define WORD_MACHINE */
  47
  48 /* Now define a symbol for the cpu type, if your compiler
  49    does not define it automatically:
  50    vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
  51    are the ones defined so far.  */
  52
  53 /* BTW: DYNIX defines sequent, ns32000, and ns16000 (GENIX compatibility) */
  54 #ifndef sequent         /* pre DYNIX 2.1 releases */
  55 # define sequent
  56 #endif
  57
  58 /* Use type int rather than a union, to represent Lisp_Object */
  59 /* This is desirable for most machines.  */
  60
  61 #define NO_UNION_TYPE
  62
  63 /* crt0.c should use the vax-bsd style of entry, with these dummy args.  */
  64
  65 #define CRT0_DUMMIES bogus_fp,
  66
  67 /* crt0.c should define a symbol `start' and do .globl with a dot.  */
  68
  69 #define DOT_GLOBAL_START
  70
  71 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  72    the 24-bit bit field into an int.  In other words, if bit fields
  73    are always unsigned.
  74
  75    If you use NO_UNION_TYPE, this flag does not matter.  */
  76
  77 #define EXPLICIT_SIGN_EXTEND
  78
  79 /* Data type of load average, as read out of kmem.  */
  80
  81 #define LOAD_AVE_TYPE unsigned long
  82
  83 /* Convert that into an integer that is 100 for a load average of 1.0  */
  84
  85 #define FSCALE  1000.0
  86 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
  87
  88 /* Define CANNOT_DUMP on machines where unexec does not work.
  89    Then the function dump-emacs will not be defined
  90    and temacs will do (load "loadup") automatically unless told otherwise.  */
  91
  92 /* #define CANNOT_DUMP */
  93
  94 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  95    pure and impure space as loaded can vary, and even their
  96    relative order cannot be relied on.
  97
  98    Otherwise Emacs assumes that text space precedes data space,
  99    numerically.  */
 100
 101 /* #define VIRT_ADDR_VARIES */
 102
 103 /* Name of file the to look in
 104    for the kernel symbol table (for load average) */
 105
 106 #undef KERNEL_FILE
 107 #define KERNEL_FILE "/dynix"
 108
 109 /* Avoids a compiler bug */
 110
 111 #define TAHOE_REGISTER_BUG
 112
 113 /* Say that the text segment of a.out includes the header;
 114    the header actually occupies the first few bytes of the text segment
 115    and is counted in hdr.a_text.  Furthermore, the value written
 116    in the a_text in the file must have N_ADDRADJ added to it.  */
 117
 118 #define A_TEXT_OFFSET(HDR) (sizeof (HDR) + N_ADDRADJ (HDR))
 119
 120 /* This is the offset of the executable's text, from the start of the file.  */
 121
 122 #define A_TEXT_SEEK(HDR) (N_TXTOFF (hdr) + sizeof (hdr))
 123
 124 /* (short) negative-int doesn't sign-extend correctly */
 125 #define SHORT_CAST_BUG
 126
 127 /* Cause compilations to be done in parallel in ymakefile.  */
 128 #define MAKE_PARALLEL &
 129
 130 /* Say that mailer interlocking uses flock.  */
 131 #define MAIL_USE_FLOCK
 132
 133 /* On many 4.2-based systems, there's a rather tricky bug
 134  * with the interpretation of the pid/pgrp value given to
 135  * the F_SETOWN fcntl() call.  It works as documented EXCEPT
 136  * when applied to filedescriptors for sockets, in which case
 137  * the sign must be reversed.  If your emacs subprocesses get
 138  * SIGIO's when they shouldn't, while running on a socket
 139  * (e.g. under X windows), you should probably define this.
 140  */
 141
 142 #define F_SETOWN_SOCK_NEG
 143
 144 /* Some really obscure 4.2-based systems (like Sequent DYNIX)
 145  * do not support asynchronous I/O (using SIGIO) on sockets,
 146  * even though it works fine on tty's.  If you have one of
 147  * these systems, define the following, and then use it in
 148  * config.h (or elsewhere) to decide when (not) to use SIGIO.
 149  */
 150
 151 #define NO_SOCK_SIGIO
 152
 153 /* Define how to search all pty names.
 154    This is for Dynix 3.0; delete next 5 definitions for older systems.  */
 155
 156 #define PTY_MAJOR "pqrstuvwPQRSTUVW"
 157 #define PTY_MINOR "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
 158 #define PTY_ITERATION                                   \
 159   register int ma, mi;                                  \
 160   for (ma = 0; ma < sizeof(PTY_MAJOR) - 1; ma++)        \
 161     for (mi = 0; mi < sizeof(PTY_MINOR) - 1; mi++)
 162 #define PTY_NAME_SPRINTF \
 163   sprintf (ptyname, "/dev/pty%c%c", PTY_MAJOR[ma], PTY_MINOR[mi]);
 164 #define PTY_TTY_NAME_SPRINTF \
 165   sprintf (ptyname, "/dev/tty%c%c", PTY_MAJOR[ma], PTY_MINOR[mi]);
 166
 167 /* arch-tag: 81caea48-aa64-4021-9544-e969dea71ee8
 168    (do not change this comment) */