src/m/tahoe.h

   1 /* machine description file for tahoe.
   2    Copyright (C) 1985 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 1, 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, depending on the version of
  27 Berkeley you are running.
  28 NOTE-END  */
  29
  30 /* The following three symbols give information on
  31  the size of various data types.  */
  32
  33 #define SHORTBITS 16            /* Number of bits in a short */
  34
  35 #define INTBITS 32              /* Number of bits in an int */
  36
  37 #define LONGBITS 32             /* Number of bits in a long */
  38
  39 /* lowest-numbered byte is most significant */
  40
  41 #define BIG_ENDIAN
  42
  43 /* XINT must explicitly sign-extend */
  44
  45 #define EXPLICIT_SIGN_EXTEND
  46
  47 /* Define how to take a char and sign-extend into an int.
  48    On machines where char is signed, this is a no-op.  */
  49
  50 #define SIGN_EXTEND_CHAR(c) (c)
  51
  52 /* Say this machine is a tahoe */
  53
  54 #ifndef tahoe
  55 #define tahoe
  56 #endif /* not tahoe */
  57
  58 /* Use type int rather than a union, to represent Lisp_Object */
  59
  60 #define NO_UNION_TYPE
  61
  62 /* crt0.c should use the vax-bsd style of entry, with no dummy args.  */
  63
  64 #define CRT0_DUMMIES
  65
  66 /* crt0.c should define a symbol `start' and do .globl with a dot.  */
  67
  68 #define DOT_GLOBAL_START
  69
  70 /* Data type of load average, as read out of kmem.  */
  71
  72 #define LOAD_AVE_TYPE double
  73
  74 /* Convert that into an integer that is 100 for a load average of 1.0  */
  75
  76 #define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
  77
  78 /* This triggers some stuff to avoid a compiler bug */
  79
  80 #define TAHOE_REGISTER_BUG
  81
  82 /* System provides alloca.  */
  83
  84 #define HAVE_ALLOCA
  85
  86 /* Control header files used by loadst.c.
  87    Some users report machines have dkstat.h while others report dk.h,
  88    so it's hard to tell what this should say.  */
  89
  90 #ifdef BSD
  91 #define DKSTAT_HEADER_FILE
  92 #endif