src/m-tower32.h

   1 /* m- file for the NCR Tower 32 running System V.2.
   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 three symbols give information on
  22  the size of various data types.  */
  23
  24 #define SHORTBITS 16            /* Number of bits in a short */
  25
  26 #define INTBITS 32              /* Number of bits in an int */
  27
  28 #define LONGBITS 32             /* Number of bits in a long */
  29
  30 /* Define BIG_ENDIAN iff lowest-numbered byte in a word
  31    is the most significant byte.  */
  32
  33 #define BIG_ENDIAN
  34
  35 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  36  * group of arguments and treat it as an array of the arguments.  */
  37
  38 /* #define NO_ARG_ARRAY */
  39
  40 /* Define WORD_MACHINE if addresses and such have
  41  * to be corrected before they can be used as byte counts.  */
  42
  43 /* #define WORD_MACHINE */
  44
  45 /* Define how to take a char and sign-extend into an int.
  46    On machines where char is signed, this is a no-op.  */
  47
  48 #define SIGN_EXTEND_CHAR(c) (c)
  49
  50 /* Now define a symbol for the cpu type, if your compiler
  51    does not define it automatically:
  52    vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
  53    are the ones defined so far.  */
  54 #define m68000
  55
  56 /* Use type int rather than a union, to represent Lisp_Object */
  57 /* This is desirable for most machines.  */
  58
  59 #define NO_UNION_TYPE
  60
  61 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  62    the 24-bit bit field into an int.  In other words, if bit fields
  63    are always unsigned.
  64
  65    If you use NO_UNION_TYPE, this flag does not matter.  */
  66
  67 #define EXPLICIT_SIGN_EXTEND
  68
  69 /* Data type of load average, as read out of kmem.  */
  70
  71 /* #define LOAD_AVE_TYPE long */
  72
  73 /* Convert that into an integer that is 100 for a load average of 1.0  */
  74
  75 /* #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE) */
  76
  77 /* Define CANNOT_DUMP on machines where unexec does not work.
  78    Then the function dump-emacs will not be defined
  79    and temacs will do (load "loadup") automatically unless told otherwise.  */
  80
  81 /* #define CANNOT_DUMP */
  82
  83 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  84    pure and impure space as loaded can vary, and even their
  85    relative order cannot be relied on.
  86
  87    Otherwise Emacs assumes that text space precedes data space,
  88    numerically.  */
  89
  90 /* #define VIRT_ADDR_VARIES */
  91
  92 /* Define C_ALLOCA if this machine does not support a true alloca
  93    and the one written in C should be used instead.
  94    Define HAVE_ALLOCA to say that the system provides a properly
  95    working alloca function and it should be used.
  96    Define neither one if an assembler-language alloca
  97    in the file alloca.s should be used.  */
  98
  99 /* #define C_ALLOCA */
 100 #define HAVE_ALLOCA
 101
 102 /* Change some things to avoid bugs in compiler */
 103
 104 #define SWITCH_ENUM_BUG 1
 105
 106 /* The standard C library is -lcieee, not -lc.
 107    Also use the PW library, which contains alloca.  */
 108
 109 #define LIB_STANDARD -lPW -lcieee
 110
 111 /* crt0.c should use the vax-bsd style of entry.  Beware that if you have
 112    OS release 2.00.00 or later, *and* change src/ymakefile so that CFLAGS
 113    includes C_OPTIMIZE_SWITCH rather than C_DEBUG_SWITCH, you need to
 114    uncomment CRT0_DUMMIES and C_OPTIMIZE_SWITCH below.  */
 115
 116 /* With the optimizer OFF */
 117
 118 #define CRT0_DUMMIES zero, bogus_fp,
 119
 120 /* With the optimizer ON */
 121
 122 /* #define CRT0_DUMMIES */
 123 /* #define C_OPTIMIZE_SWITCH -O2 */
 124
 125 /* emacs's magic number isn't temacs's;
 126    temacs is writeable text (the default!).  */
 127
 128 #include <asld.h>
 129 #define EXEC_MAGIC AOUT1MAGIC
 130 #define EXEC_PAGESIZE DATACLICK