src/m/7300.h

   1 /* machine description file for AT&T UNIX PC model 7300
   2    Copyright (C) 1986, 2002 Free Software Foundation, Inc.
   3    Modified for this machine by mtxinu!rtech!gonzo!daveb
   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., 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, 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="usg5-2-2"  */
  26
  27 /* Supposedly now these machines have flexnames.
  28
  29 /* # define SHORTNAMES */
  30
  31
  32 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
  33    is the most significant byte.  */
  34
  35 #define WORDS_BIG_ENDIAN
  36
  37 /* XINT must explicitly sign-extend */
  38
  39 #define EXPLICIT_SIGN_EXTEND
  40
  41 /* Use type int rather than a union, to represent Lisp_Object */
  42
  43 #define NO_UNION_TYPE
  44
  45 /* Now define a symbol for the cpu type, if your compiler
  46    does not define it automatically:
  47    vax, m68000, ns16000 are the ones defined so far.  */
  48
  49 # ifndef mc68k
  50 # define mc68k
  51 # endif
  52 #ifndef m68k
  53 #define m68k
  54 #endif
  55
  56 /* Cause crt0.c to define errno.  */
  57
  58 #define NEED_ERRNO
  59
  60 /* Data type of load average, as read out of kmem.  */
  61 /* These are commented out since it is not supported by this machine.  */
  62
  63 /* #define LOAD_AVE_TYPE long */
  64
  65 /* Convert that into an integer that is 100 for a load average of 1.0  */
  66
  67 /* #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0) */
  68
  69 #ifndef __GNUC__
  70
  71 #define SWITCH_ENUM_BUG
  72
  73 #endif
  74
  75 /* If you have the PD pty driver installed, uncomment the following line.  */
  76 /* #define HAVE_PTYS */
  77
  78 #define HAVE_SYSVIPC
  79
  80 /* We don't have memmove.  */
  81 #define memmove(d, s, n) safe_bcopy (s, d, n)
  82
  83 /* These three lines were new in 18.50.  They were said to permit
  84    a demand-paged executable, but someone else says they don't work.
  85    Someone else says they do.  They didn't work because errno was an
  86    initialized variable in crt0.c, and because of %splimit (also therein),
  87    both of which have been fixed now. */
  88 #define SECTION_ALIGNMENT 0x03ff
  89 #define SEGMENT_MASK 0xffff
  90 #define LD_SWITCH_MACHINE -z
  91
  92 /* Insist on using cc when compiling this.  GCC may have been
  93    configured to use GAS syntax, which causes problems.  */
  94 #define CRT0_COMPILE cc -c -O -Demacs