src/m/delta.h

   1 /* Machine description file for the Motorola Delta.
   2    Tested on mvme147 board using R3V7 without X.  Tested with gcc.
   3    Tested on mvme167 board using R3V7 without X.  Tested with cc, gnucc, gcc.
   4    Copyright (C) 1986, 1993 Free Software Foundation, Inc.
   5
   6 This file is part of GNU Emacs.
   7
   8 GNU Emacs is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2, or (at your option)
  11 any later version.
  12
  13 GNU Emacs is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GNU Emacs; see the file COPYING.  If not, write to
  20 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  21
  22
  23 /* The following line tells the configuration script what sort of
  24    operating system this machine is likely to run.
  25    USUAL-OPSYS="usg5-3"  */
  26
  27 /* The following three symbols give information on
  28  the size of various data types.  */
  29
  30 #define SHORTBITS 16            /* Number of bits in a short */
  31
  32 #define INTBITS 32              /* Number of bits in an int */
  33
  34 #define LONGBITS 32             /* Number of bits in a long */
  35
  36 /* Define BIG_ENDIAN iff lowest-numbered byte in a word
  37    is the most significant byte.  */
  38
  39 #define BIG_ENDIAN
  40
  41 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  42  * group of arguments and treat it as an array of the arguments.  */
  43
  44 /* #define NO_ARG_ARRAY */
  45
  46 /* Define WORD_MACHINE if addresses and such have
  47  * to be corrected before they can be used as byte counts.  */
  48
  49 /* #define WORD_MACHINE */
  50
  51 /* Now define a symbol for the cpu type, if your compiler
  52    does not define it automatically:
  53    Ones defined so far include vax, m68000, ns16000, pyramid,
  54    orion, tahoe, APOLLO and many others */
  55
  56 #define m68000
  57 #define MOTOROLA_DELTA
  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 LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE) */
  79
  80 /* Define CANNOT_DUMP on machines where unexec does not work.
  81    Then the function dump-emacs will not be defined
  82    and temacs will do (load "loadup") automatically unless told otherwise.  */
  83
  84 /* #define CANNOT_DUMP */
  85
  86 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  87    pure and impure space as loaded can vary, and even their
  88    relative order cannot be relied on.
  89
  90    Otherwise Emacs assumes that data space precedes text space,
  91    numerically.  */
  92
  93 /* #define VIRT_ADDR_VARIES */
  94
  95 /* Define C_ALLOCA if this machine does not support a true alloca
  96    and the one written in C should be used instead.
  97    Define HAVE_ALLOCA to say that the system provides a properly
  98    working alloca function and it should be used.
  99    Define neither one if an assembler-language alloca
 100    in the file alloca.s should be used.  */
 101
 102 /* #define C_ALLOCA */
 103 /* #define HAVE_ALLOCA */
 104
 105 /* Define NO_REMAP if memory segmentation makes it not work well
 106    to change the boundary between the text section and data section
 107    when Emacs is dumped.  If you define this, the preloaded Lisp
 108    code will not be sharable; but that's better than failing completely.  */
 109
 110 #define NO_REMAP
 111
 112 /* Some really obscure 4.2-based systems (like Sequent DYNIX)
 113  * do not support asynchronous I/O (using SIGIO) on sockets,
 114  * even though it works fine on tty's.  If you have one of
 115  * these systems, define the following, and then use it in
 116  * config.h (or elsewhere) to decide when (not) to use SIGIO.
 117  *
 118  * You'd think this would go in an operating-system description file,
 119  * but since it only occurs on some, but not all, BSD systems, the
 120  * reasonable place to select for it is in the machine description
 121  * file.
 122  */
 123
 124 /* #define NO_SOCK_SIGIO */
 125
 126 \f
 127 /* Define these if you want to edit files up to 32Mbytes.
 128    Leaving them undefined (files up to 8 Mbytes) should be more efficient. */
 129
 130 /* #define VALBITS 26
 131    #define GCTYPEBITS 5 */
 132
 133 /* Undefine this if you don't want the machine slow down when a buffer
 134    is modified. */
 135
 136 #define CLASH_DETECTION
 137
 138 /* Machine specific stuff */
 139 #define HAVE_PTYS
 140 #define SYSV_PTYS
 141 #define HAVE_SELECT
 142 #define HAVE_SOCKETS            /***** only if NSE has been installed *****/
 143 #define HAVE_TIMEVAL
 144 #define SIGNALS_VIA_CHARACTERS
 145 #define BROKEN_CLOSEDIR         /* builtin closedir is interruptible */
 146 #undef HAVE_BCOPY               /* b* functions are just stubs to mem* ones */
 147 #define bcopy(from,to,bytes)    memcpy(to,from,bytes)
 148 #define bzero(to,bytes)         memset(to,0,bytes)
 149 #define bcmp memcmp
 150 #define memmove safe_bcopy      /* for overlapping copies */
 151 #undef KERNEL_FILE
 152 #define KERNEL_FILE "/sysv68"
 153 #undef LDAV_SYMBOL
 154 #ifdef SIGIO
 155  /* R3V7 has SIGIO, but interrupt input does not work yet.
 156     Let's go on with cbreak code. */
 157 /* # define INTERRUPT_INPUT */
 158 #endif
 159
 160 /* The standard C library is -lc881, not -lc.
 161    -lbsd brings sigblock and sigsetmask.
 162    DO NOT USE -lPW. That version of alloca is broken in versions R3V5,
 163    R3V6, R3V7. -riku@field.fi -pot@cnuce.cnr.it. */
 164
 165 #define LIB_STANDARD -lc881
 166 #define LIB_MATH -lm881
 167 #define LIBS_TERMCAP -lcurses
 168 #define LIBS_SYSTEM -lbsd
 169 #undef sigsetmask
 170
 171 #ifdef HAVE_X_WINDOWS
 172 /* I have not tested X, but I think these are obsolete, so let's
 173    commment them -pot@cnuce.cnr.it */
 174 /* debug switches enabled because of some difficulties w/X11
 175 # define C_DEBUG_SWITCH -g
 176 # define OBJECTS_MACHINE -lg
 177 # define C_OPTIMIZE_SWITCH
 178 # define CANNOT_DUMP
 179 # define XDEBUG */
 180 /* X library is in 'nonstandard' location. */
 181 /* This should be taken care of by configure -pot@cnuce.cnr.it
 182 # define LD_SWITCH_MACHINE -L/usr/lib/X11/ */
 183 # define HAVE_RANDOM
 184 # define BROKEN_FIONREAD        /* pearce@ll.mit.edu says this is needed. */
 185 # define HAVE_XSCREENNUMBEROFSCREEN
 186 # undef LIB_X11_LIB             /* no shared libraries */
 187 # define LIB_X11_LIB -lX11
 188 # undef USG_SHARED_LIBRARIES    /* once again, no shared libs */
 189 # undef LIBX11_SYSTEM           /* no -lpt as usg5-3.h expects */
 190 # define LIBX11_SYSTEM -lnls -lnsl_s
 191 #endif /* HAVE_X_WINDOWS */
 192
 193 #ifdef __GNUC__
 194  /* Use builtin alloca. Also be sure that no other ones are tried out. */
 195 # define alloca __builtin_alloca
 196 # define HAVE_ALLOCA
 197  /* Union lisp objects do not yet work as of 19.15. */
 198 /* # undef NO_UNION_TYPE */
 199
 200 /* There are three ways to use the gnucc provided with R3V7.  Either
 201    link /bin/ccd/cc to /bin/cc and then configure (supposing that CC
 202    is unset or set to cc).  Or configure like this: `CC=/bin/ccd/cc
 203    configure', or else configure like this: `CC=gnucc configure'. */
 204
 205 # ifdef __STDC__
 206  /* Compiling with gnucc (not through ccd).  This means -traditional is
 207     not set.  Let us set it, because (as of emacs 19.21) gmalloc.c
 208     includes <stddef.h>, and we don't have that (as of SYSV68 R3V7).
 209     Removing the -finline-functions option to gnucc causes an
 210     executable emacs smaller by about 10%. */
 211 #  define C_SWITCH_MACHINE -mfp0ret -m68881 -traditional -Dconst= -fdelayed-branch -fstrength-reduce -finline-functions -fcaller-saves
 212 #  define LIB_GCC /lib/gnulib881
 213 # endif /* __STDC__ */
 214
 215 #else
 216  /* Not __GNUC__, use the alloca in alloca.s. */
 217
 218  /* Try to guess if we are using the Green Hills Compiler */
 219 # if defined mc68000 && defined MC68000
 220  /* Required only for use with Green Hills compiler:
 221         -ga      Because alloca relies on stack frames. This option forces
 222                  the Green Hills compiler to create stack frames even for
 223                  functions with few local variables. */
 224 #  define C_SWITCH_MACHINE -ga -O
 225 #  define GAP_USE_BCOPY         /* *++to = *++from  is inefficient */
 226 #  define BCOPY_DOWNWARD_SAFE   /* bcopy does: mov.b (%a1)+,(%a0)+ */
 227 # else
 228  /* We are using the standard AT&T Portable C Compiler */
 229 #  define SWITCH_ENUM_BUG
 230 # endif
 231
 232 #endif /* not __GNUC__ */