code.delx.au - gnu-emacs/blob - src/m/dpx2.h

   1 /* machine description for Bull DPX/2 range
   2    Copyright (C) 1985, 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 /* The following line tells the configuration script what sort of
  21    operating system this machine is likely to run.
  22    USUAL-OPSYS="usg5-3"  */
  23
  24 /*
  25  * You need to either un-comment one of these lines, or copy one
  26  * of them to config.h before you include this file.
  27  * Note that some simply define a constant and others set a value.
  28  */
  29
  30 /* #define ncl_el       /* DPX/2 210,220 etc */
  31 /* #define ncl_mr 1     /* DPX/2 320,340 (and 360,380 ?) */
  32
  33 /* The following three symbols give information on
  34  the size of various data types.  */
  35
  36 #define SHORTBITS 16            /* Number of bits in a short */
  37
  38 #define INTBITS 32              /* Number of bits in an int */
  39
  40 #define LONGBITS 32             /* Number of bits in a long */
  41
  42 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  43  * group of arguments and treat it as an array of the arguments.  */
  44
  45 #define NO_ARG_ARRAY
  46
  47 /* Define WORD_MACHINE if addresses and such have
  48  * to be corrected before they can be used as byte counts.  */
  49
  50 /* #define WORD_MACHINE /**/
  51
  52 /* Now define a symbol for the cpu type, if your compiler
  53    does not define it automatically:
  54    Ones defined so far include vax, m68000, ns16000, pyramid,
  55    orion, tahoe, APOLLO and many others */
  56
  57 /* /bin/cc on ncl_el and ncl_mr define m68k and mc68000 */
  58
  59 /* Use type int rather than a union, to represent Lisp_Object */
  60 /* This is desirable for most machines.  */
  61
  62 #define NO_UNION_TYPE
  63
  64 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  65    the 24-bit bit field into an int.  In other words, if bit fields
  66    are always unsigned.
  67
  68    If you use NO_UNION_TYPE, this flag does not matter.  */
  69
  70 #define EXPLICIT_SIGN_EXTEND
  71
  72 /* Data type of load average, as read out of kmem.  */
  73
  74 #define LOAD_AVE_TYPE long
  75
  76 /* Convert that into an integer that is 100 for a load average of 1.0  */
  77
  78 #define FSCALE 1000.0
  79 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
  80
  81 /* Define CANNOT_DUMP on machines where unexec does not work.
  82    Then the function dump-emacs will not be defined
  83    and temacs will do (load "loadup") automatically unless told otherwise.  */
  84
  85 /*#define CANNOT_DUMP /**/
  86
  87 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  88    pure and impure space as loaded can vary, and even their
  89    relative order cannot be relied on.
  90
  91    Otherwise Emacs assumes that text space precedes data space,
  92    numerically.  */
  93
  94 /* #define VIRT_ADDR_VARIES /**/
  95
  96 /* Define C_ALLOCA if this machine does not support a true alloca
  97    and the one written in C should be used instead.
  98    Define HAVE_ALLOCA to say that the system provides a properly
  99    working alloca function and it should be used.
 100    Define neither one if an assembler-language alloca
 101    in the file alloca.s should be used.  */
 102
 103 #define C_ALLOCA
 104 /* #define HAVE_ALLOCA /**/
 105
 106 /* Define NO_REMAP if memory segmentation makes it not work well
 107    to change the boundary between the text section and data section
 108    when Emacs is dumped.  If you define this, the preloaded Lisp
 109    code will not be sharable; but that's better than failing completely.  */
 110
 111 #define NO_REMAP
 112
 113 /*
 114  * end of the standard macro's
 115  */
 116
 117 /*
 118  * a neat identifier to handle source mods (if needed)
 119  */
 120 #ifndef DPX2
 121 #define DPX2
 122 #endif
 123
 124 /* Disable support for shared libraries in unexec.  */
 125
 126 #undef USG_SHARED_LIBRARIES
 127
 128 /*
 129  * if we use X11, libX11.a has these...
 130  */
 131 # undef LIB_X11_LIB
 132 # define LIB_X11_LIB -lX11
 133 # undef LIBX11_SYSTEM
 134 # define LIBX11_SYSTEM -lmalloc -lnsl
 135 # define BSTRING
 136 # define HAVE_GETWD
 137
 138 /*
 139  * we must have INET loaded so we have sockets
 140  */
 141 # define HAVE_SOCKETS
 142
 143 /*
 144  * useful if you have INET loaded
 145  */
 146 # define LIBS_MACHINE -linet
 147
 148
 149 #if (defined(ncl_mr) || defined(ncl_el)) && !defined (NBPC)
 150 # define NBPC 4096
 151 #endif
 152
 153 /*
 154  * if SIGIO is defined, much of the emacs
 155  * code assumes we are BSD !!
 156  */
 157 #ifdef SIGIO
 158 # undef SIGIO
 159 #endif
 160
 161
 162 /*
 163  * a good idea on multi-user systems :-)
 164  */
 165 #define CLASH_DETECTION         /* probably a good idea */
 166
 167
 168 #ifdef SIGTSTP
 169 /*
 170  * sysdep.c(sys_suspend) works fine with emacs-18.58
 171  * and BOS 02.00.45, if you have an earler version
 172  * of Emacs and/or BOS, or have problems, or just prefer
 173  * to start a sub-shell rather than suspend-emacs,
 174  * un-comment out the next line.
 175  */
 176 /* # undef SIGTSTP /* make suspend-emacs spawn a sub-shell */
 177 # ifdef NOMULTIPLEJOBS
 178 #   undef NOMULTIPLEJOBS
 179 # endif
 180 #endif
 181 /*
 182  * no we don't want this at all
 183  */
 184 #ifdef USG_JOBCTRL
 185 # undef USG_JOBCTRL
 186 #endif
 187
 188 /*
 189  * but we have that
 190 */
 191 #define GETPGRP_NO_ARG
 192
 193 /* select also needs this header file--but not in ymakefile.  */
 194 #ifndef NOT_C_CODE
 195 #include <sys/types.h>
 196 #include <sys/select.h>
 197 #endif
 198
 199 #define TEXT_START 0
 200
 201 /*
 202  * Define the direction of stack growth.
 203  */
 204
 205 #define STACK_DIRECTION -1
 206
 207 /* we have termios */
 208 #undef HAVE_TERMIO
 209 #define HAVE_TERMIOS
 210 #define HAVE_TCATTR
 211
 212 /* we also have this */
 213 #define HAVE_PTYS
 214 #define SYSV_PTYS
 215
 216 /* It doesn't seem we have sigpause */
 217 #undef HAVE_SYSV_SIGPAUSE
 218
 219
 220 /* on bos2.00.45 there is a bug that makes the F_SETOWN fcntl() call
 221    enters in an infinite loop. Avoid calling it  */
 222 #define F_SETOWN_BUG
 223
 224 /* system closedir sometimes complains about wrong descriptor
 225    for no apparent reasons. Use the provided closedir in sysdep.c instead */
 226 #ifdef HAVE_CLOSEDIR
 227 #undef HAVE_CLOSEDIR
 228 #endif
 229
 230 /* Send signals to subprocesses by "typing" signal chars at them.  */
 231 #define SIGNALS_VIA_CHARACTERS
 232
 233  /* end of dpx2.h */
 234
 235