src/m/tower32.h

   1 /* machine description 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 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="usg5-2-2"  */
  24
  25 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
  26    is the most significant byte.  */
  27
  28 #define WORDS_BIG_ENDIAN
  29
  30 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  31  * group of arguments and treat it as an array of the arguments.  */
  32
  33 /* #define NO_ARG_ARRAY */
  34
  35 /* Define WORD_MACHINE if addresses and such have
  36  * to be corrected before they can be used as byte counts.  */
  37
  38 /* #define WORD_MACHINE */
  39
  40 /* Now define a symbol for the cpu type, if your compiler
  41    does not define it automatically:
  42    vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
  43    are the ones defined so far.  */
  44 #define m68000
  45
  46 /* Use type int rather than a union, to represent Lisp_Object */
  47 /* This is desirable for most machines.  */
  48
  49 #define NO_UNION_TYPE
  50
  51 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  52    the 24-bit bit field into an int.  In other words, if bit fields
  53    are always unsigned.
  54
  55    If you use NO_UNION_TYPE, this flag does not matter.  */
  56
  57 #define EXPLICIT_SIGN_EXTEND
  58
  59 /* Data type of load average, as read out of kmem.  */
  60
  61 /* #define LOAD_AVE_TYPE long */
  62
  63 /* Convert that into an integer that is 100 for a load average of 1.0  */
  64
  65 /* #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE) */
  66
  67 /* Define CANNOT_DUMP on machines where unexec does not work.
  68    Then the function dump-emacs will not be defined
  69    and temacs will do (load "loadup") automatically unless told otherwise.  */
  70
  71 /* #define CANNOT_DUMP */
  72
  73 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  74    pure and impure space as loaded can vary, and even their
  75    relative order cannot be relied on.
  76
  77    Otherwise Emacs assumes that text space precedes data space,
  78    numerically.  */
  79
  80 /* #define VIRT_ADDR_VARIES */
  81
  82 /* Define C_ALLOCA if this machine does not support a true alloca
  83    and the one written in C should be used instead.
  84    Define HAVE_ALLOCA to say that the system provides a properly
  85    working alloca function and it should be used.
  86    Define neither one if an assembler-language alloca
  87    in the file alloca.s should be used.  */
  88
  89 /* #define C_ALLOCA */
  90 #define HAVE_ALLOCA
  91
  92 /* Change some things to avoid bugs in compiler */
  93
  94 #define SWITCH_ENUM_BUG 1
  95
  96 /* The standard C library is -lcieee, not -lc.
  97    Also use the PW library, which contains alloca.  */
  98
  99 #define LIB_STANDARD -lPW -lcieee
 100
 101 /* crt0.c should use the vax-bsd style of entry.  Beware that if you have
 102    OS release 2.00.00 or later, *and* change src/ymakefile so that CFLAGS
 103    includes C_OPTIMIZE_SWITCH rather than C_DEBUG_SWITCH, you need to
 104    uncomment CRT0_DUMMIES and C_OPTIMIZE_SWITCH below.  */
 105
 106 /* With the optimizer OFF */
 107
 108 #define CRT0_DUMMIES zero, bogus_fp,
 109
 110 /* With the optimizer ON */
 111
 112 /* #define CRT0_DUMMIES */
 113 /* #define C_OPTIMIZE_SWITCH -O2 */
 114
 115 /* emacs's magic number isn't temacs's;
 116    temacs is writable text (the default!).  */
 117
 118 #include <asld.h>
 119 #define EXEC_MAGIC AOUT1MAGIC
 120 #define EXEC_PAGESIZE DATACLICK