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 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 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 /* Define how to take a char and sign-extend into an int.
  45    On machines where char is signed, this is a no-op.  */
  46
  47 #define SIGN_EXTEND_CHAR(c) (c)
  48
  49 /* Say this machine is a 16000 */
  50
  51 #define ns16000 1
  52
  53 /* Use type int rather than a union, to represent Lisp_Object */
  54
  55 #define NO_UNION_TYPE
  56
  57 /* Data type of load average, as read out of kmem.  */
  58
  59 #ifndef USG
  60 #define LOAD_AVE_TYPE double
  61 #endif
  62
  63 /* Convert that into an integer that is 100 for a load average of 1.0  */
  64
  65 #ifndef USG
  66 #define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
  67 #endif
  68 \f
  69 #ifdef USG
  70
  71 /* Control assembler syntax used in alloca.s.  */
  72 #define NS5
  73
  74 /* On early NS systems ulimit was buggy. If set emacs uses this value
  75  * for the maximum sbrk value instead of getting it from ulimit.
  76  */
  77 #define ULIMIT_BREAK_VALUE 0x7E0000
  78
  79 /* Early NS compilers have this bug. I believe it has been fixed in later
  80  * releases.
  81  */
  82 #define SHORT_CAST_BUG
  83
  84 #define SEGMENT_MASK (NBPS - 1)
  85
  86 /* Variables to get crt0.c to come out correctly */
  87 #define CRT0_DUMMIES bogus_fp,
  88 #define DOT_GLOBAL_START
  89
  90 /* Control how emacsclient communicates.  */
  91 #define HAVE_SYSVIPC
  92
  93 /* Set this to /bin/mail unless you have a better mail posting program */
  94 #define MAIL_PROGRAM_NAME "/usr/local/bin/remail"
  95
  96 /* Tell sysdep.c not to define bzero, etc.  */
  97 #undef BSTRING
  98 #define BSTRING
  99
 100 /* Macro definitions to emulate BSD functions with SysV ones */
 101 #undef bcopy
 102 #undef bzero
 103 #undef bcmp
 104
 105 #define bcopy(a,b,s)    memcpy(b,a,s)
 106 #define bzero(a,s)      memset(a,0,s)
 107 #define bcmp            memcmp
 108
 109 /* This avoids problems with uninitialized static variables going in .data.  */
 110 #define static
 111
 112 #endif /* USG */