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

   1 /* machine description file for TI Nu machines using system V.
   2    Copyright (C) 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 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="usg5-2"  */
  24
  25 /* The following three symbols give information on
  26  the size of various data types.  */
  27
  28 #define SHORTBITS 16            /* Number of bits in a short */
  29
  30 #define INTBITS 32              /* Number of bits in an int */
  31
  32 #define LONGBITS 32             /* Number of bits in a long */
  33
  34 /* Define BIG_ENDIAN iff lowest-numbered byte in a word
  35    is the most significant byte.  */
  36
  37 #define BIG_ENDIAN
  38
  39 /* XINT must explicitly sign-extend */
  40
  41 #define EXPLICIT_SIGN_EXTEND
  42
  43 /* Use type int rather than a union, to represent Lisp_Object */
  44
  45 #define NO_UNION_TYPE
  46
  47 /* Now define a symbol for the cpu type, if your compiler
  48    does not define it automatically:
  49    vax, m68000, ns16000 are the ones defined so far.  */
  50
  51 #ifndef m68000
  52 #define m68000
  53 #endif
  54
  55 #ifndef NU
  56 #define NU
  57 #endif
  58
  59 /* Data type of load average, as read out of kmem.  */
  60 /* These are commented out since it does not really work in uniplus */
  61
  62 /* #define LOAD_AVE_TYPE long */
  63
  64 /* Convert that into an integer that is 100 for a load average of 1.0  */
  65
  66 /* #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0) */
  67
  68 /* Change some things to avoid bugs in compiler */
  69
  70 #define SWITCH_ENUM_BUG 1
  71
  72 /* The NU machine has a compiler that can handle long names.  */
  73
  74 #undef SHORTNAMES
  75
  76 /* Specify alignment requirement for start of text and data sections
  77    in the executable file.  */
  78
  79 #define SECTION_ALIGNMENT pagemask