src/m/tower32.h

   1 /* machine description file for the NCR Tower 32 running System V.2.
   2    Copyright (C) 1986, 2002 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, Inc., 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21
  22 /* The following line tells the configuration script what sort of
  23    operating system this machine is likely to run.
  24    USUAL-OPSYS="usg5-2-2"  */
  25
  26 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
  27    is the most significant byte.  */
  28
  29 #define WORDS_BIG_ENDIAN
  30
  31 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  32  * group of arguments and treat it as an array of the arguments.  */
  33
  34 /* #define NO_ARG_ARRAY */
  35
  36 /* Define WORD_MACHINE if addresses and such have
  37  * to be corrected before they can be used as byte counts.  */
  38
  39 /* #define WORD_MACHINE */
  40
  41 /* Now define a symbol for the cpu type, if your compiler
  42    does not define it automatically:
  43    vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
  44    are the ones defined so far.  */
  45 #define m68000
  46
  47 /* Use type int rather than a union, to represent Lisp_Object */
  48 /* This is desirable for most machines.  */
  49
  50 #define NO_UNION_TYPE
  51
  52 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  53    the 24-bit bit field into an int.  In other words, if bit fields
  54    are always unsigned.
  55
  56    If you use NO_UNION_TYPE, this flag does not matter.  */
  57
  58 #define EXPLICIT_SIGN_EXTEND
  59
  60 /* Data type of load average, as read out of kmem.  */
  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 / FSCALE) */
  67
  68 /* Define CANNOT_DUMP on machines where unexec does not work.
  69    Then the function dump-emacs will not be defined
  70    and temacs will do (load "loadup") automatically unless told otherwise.  */
  71
  72 /* #define CANNOT_DUMP */
  73
  74 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  75    pure and impure space as loaded can vary, and even their
  76    relative order cannot be relied on.
  77
  78    Otherwise Emacs assumes that text space precedes data space,
  79    numerically.  */
  80
  81 /* #define VIRT_ADDR_VARIES */
  82
  83 /* Change some things to avoid bugs in compiler */
  84
  85 #define SWITCH_ENUM_BUG 1
  86
  87 /* The standard C library is -lcieee, not -lc.
  88    Also use the PW library, which contains alloca.  */
  89
  90 #define LIB_STANDARD -lPW -lcieee
  91
  92 /* crt0.c should use the vax-bsd style of entry.  Beware that if you have
  93    OS release 2.00.00 or later, *and* change src/ymakefile so that CFLAGS
  94    includes C_OPTIMIZE_SWITCH rather than C_DEBUG_SWITCH, you need to
  95    uncomment CRT0_DUMMIES and C_OPTIMIZE_SWITCH below.  */
  96
  97 /* With the optimizer OFF */
  98
  99 #define CRT0_DUMMIES zero, bogus_fp,
 100
 101 /* With the optimizer ON */
 102
 103 /* #define CRT0_DUMMIES */
 104 /* #define C_OPTIMIZE_SWITCH -O2 */
 105
 106 /* emacs's magic number isn't temacs's;
 107    temacs is writable text (the default!).  */
 108
 109 #include <asld.h>
 110 #define EXEC_MAGIC AOUT1MAGIC
 111 #define EXEC_PAGESIZE DATACLICK