code.delx.au - gnu-emacs/blob - src/m/ns16000.h

   1 /* machine description file for ns16000.
   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 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 For the Encore, use `-opsystem=umax'.
  27 For a Tektronix 16000 box (a 6130, perhaps?), use `-opsystem=bsd4-2'.
  28 Use `-machine=ns16000' for both.
  29 NOTE-END  */
  30
  31 /* The following three symbols give information on
  32  the size of various data types.  */
  33
  34 #define SHORTBITS 16            /* Number of bits in a short */
  35
  36 #define INTBITS 32              /* Number of bits in an int */
  37
  38 #define LONGBITS 32             /* Number of bits in a long */
  39
  40 /* 16000 is little-endian (lowest-numbered byte is least significant) */
  41
  42 /* #define BIG_ENDIAN */  /* So don't define this.  */
  43
  44 /* Say this machine is a 16000 */
  45
  46 #define ns16000 1
  47
  48 /* Use type int rather than a union, to represent Lisp_Object */
  49
  50 #define NO_UNION_TYPE
  51
  52 /* Data type of load average, as read out of kmem.  */
  53
  54 #ifndef USG
  55 #define LOAD_AVE_TYPE double
  56 #endif
  57
  58 /* Convert that into an integer that is 100 for a load average of 1.0  */
  59
  60 #ifndef USG
  61 #define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
  62 #endif
  63 \f
  64 #ifdef USG
  65
  66 /* Control assembler syntax used in alloca.s.  */
  67 #define NS5
  68
  69 /* On early NS systems ulimit was buggy. If set emacs uses this value
  70  * for the maximum sbrk value instead of getting it from ulimit.
  71  */
  72 #define ULIMIT_BREAK_VALUE 0x7E0000
  73
  74 /* Early NS compilers have this bug. I believe it has been fixed in later
  75  * releases.
  76  */
  77 #define SHORT_CAST_BUG
  78
  79 #define SEGMENT_MASK (NBPS - 1)
  80
  81 /* Variables to get crt0.c to come out correctly */
  82 #define CRT0_DUMMIES bogus_fp,
  83 #define DOT_GLOBAL_START
  84
  85 /* Control how emacsclient communicates.  */
  86 #define HAVE_SYSVIPC
  87
  88 /* Set this to /bin/mail unless you have a better mail posting program */
  89 #define MAIL_PROGRAM_NAME "/usr/local/bin/remail"
  90
  91 /* Tell sysdep.c not to define bzero, etc.  */
  92 #undef BSTRING
  93 #define BSTRING
  94
  95 /* Macro definitions to emulate BSD functions with SysV ones */
  96 #undef bcopy
  97 #undef bzero
  98 #undef bcmp
  99
 100 #define bcopy(a,b,s)    memcpy(b,a,s)
 101 #define bzero(a,s)      memset(a,0,s)
 102 #define bcmp            memcmp
 103
 104 /* This avoids problems with uninitialized static variables going in .data.  */
 105 #define static
 106
 107 #endif /* USG */