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, 1994 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, Inc., 59 Temple Place - Suite 330,
  21 Boston, MA 02111-1307, USA.  */
  22
  23
  24 /* The following line tells the configuration script what sort of
  25    operating system this machine is likely to run.
  26    USUAL-OPSYS="usg5-3"  */
  27
  28 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
  29    is the most significant byte.  */
  30
  31 #define WORDS_BIG_ENDIAN
  32
  33 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  34  * group of arguments and treat it as an array of the arguments.  */
  35
  36 /* #define NO_ARG_ARRAY */
  37
  38 /* Define WORD_MACHINE if addresses and such have
  39  * to be corrected before they can be used as byte counts.  */
  40
  41 /* #define WORD_MACHINE */
  42
  43 /* Now define a symbol for the cpu type, if your compiler
  44    does not define it automatically:
  45    Ones defined so far include vax, m68000, ns16000, pyramid,
  46    orion, tahoe, APOLLO and many others */
  47
  48 #define m68000
  49 #define MOTOROLA_DELTA
  50
  51 /* Use type int rather than a union, to represent Lisp_Object */
  52 /* This is desirable for most machines.  */
  53
  54 #define NO_UNION_TYPE
  55
  56 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  57    the bit field into an int.  In other words, if bit fields
  58    are always unsigned.
  59
  60    If you use NO_UNION_TYPE, this flag does not matter.  */
  61
  62 #define EXPLICIT_SIGN_EXTEND
  63
  64 /* Data type of load average, as read out of kmem.  */
  65
  66 /* #define LOAD_AVE_TYPE long */
  67
  68 /* Convert that into an integer that is 100 for a load average of 1.0  */
  69
  70 /* #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE) */
  71
  72 /* Define CANNOT_DUMP on machines where unexec does not work.
  73    Then the function dump-emacs will not be defined
  74    and temacs will do (load "loadup") automatically unless told otherwise.  */
  75
  76 /* #define CANNOT_DUMP */
  77
  78 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  79    pure and impure space as loaded can vary, and even their
  80    relative order cannot be relied on.
  81
  82    Otherwise Emacs assumes that data space precedes text space,
  83    numerically.  */
  84
  85 /* #define VIRT_ADDR_VARIES */
  86
  87 /* Define C_ALLOCA if this machine does not support a true alloca
  88    and the one written in C should be used instead.
  89    Define HAVE_ALLOCA to say that the system provides a properly
  90    working alloca function and it should be used.
  91    Define neither one if an assembler-language alloca
  92    in the file alloca.s should be used.  */
  93
  94 /* #define C_ALLOCA */
  95 /* #define HAVE_ALLOCA */
  96
  97 /* Define NO_REMAP if memory segmentation makes it not work well
  98    to change the boundary between the text section and data section
  99    when Emacs is dumped.  If you define this, the preloaded Lisp
 100    code will not be sharable; but that's better than failing completely.  */
 101
 102 #define NO_REMAP
 103
 104 /* Some really obscure 4.2-based systems (like Sequent DYNIX)
 105  * do not support asynchronous I/O (using SIGIO) on sockets,
 106  * even though it works fine on tty's.  If you have one of
 107  * these systems, define the following, and then use it in
 108  * config.h (or elsewhere) to decide when (not) to use SIGIO.
 109  *
 110  * You'd think this would go in an operating-system description file,
 111  * but since it only occurs on some, but not all, BSD systems, the
 112  * reasonable place to select for it is in the machine description
 113  * file.
 114  */
 115
 116 /* #define NO_SOCK_SIGIO */
 117
 118 \f
 119 /* Undefine this if you don't want the machine slow down when a buffer
 120    is modified. */
 121
 122 #define CLASH_DETECTION
 123
 124 /* Machine specific stuff */
 125 #define HAVE_PTYS
 126 #define SYSV_PTYS
 127 #ifdef HAVE_INET_SOCKETS        /* this comes from autoconf  */
 128 # define HAVE_SOCKETS           /* NSE may or may not have been installed */
 129 #endif
 130 #define SIGNALS_VIA_CHARACTERS
 131 #define BROKEN_CLOSEDIR         /* builtin closedir is interruptible */
 132 #undef HAVE_BCOPY               /* b* functions are just stubs to mem* ones */
 133 #define bcopy(from,to,bytes)    memcpy(to,from,bytes)
 134 #define bzero(to,bytes)         memset(to,0,bytes)
 135 #define bcmp memcmp
 136 #define memmove(t,f,s) safe_bcopy(f,t,s) /* for overlapping copies */
 137 #undef KERNEL_FILE
 138 #define KERNEL_FILE "/sysv68"
 139 #undef LDAV_SYMBOL
 140 #ifdef SIGIO
 141  /* R3V7 has SIGIO, but interrupt input does not work yet.
 142     Let's go on with cbreak code. */
 143 /* # define INTERRUPT_INPUT */
 144 #endif
 145
 146 /* The standard C library is -lc881, not -lc.
 147    -lbsd brings sigblock and sigsetmask.
 148    DO NOT USE -lPW. That version of alloca is broken in versions R3V5,
 149    R3V6, R3V7. -riku@field.fi -pot@cnuce.cnr.it. */
 150
 151 #define LIB_STANDARD -lc881
 152 #define LIB_MATH -lm881
 153 #define LIBS_TERMCAP -lcurses
 154 #define LIBS_SYSTEM -lbsd
 155 #undef sigsetmask
 156
 157 #ifdef HAVE_X_WINDOWS
 158 # define HAVE_RANDOM
 159 # define BROKEN_FIONREAD        /* pearce@ll.mit.edu says this is needed. */
 160 # define HAVE_XSCREENNUMBEROFSCREEN
 161 # undef LIB_X11_LIB             /* no shared libraries */
 162 # define LIB_X11_LIB -lX11
 163 # undef USG_SHARED_LIBRARIES    /* once again, no shared libs */
 164 # undef LIBX11_SYSTEM           /* no -lpt as usg5-3.h expects */
 165 # define LIBX11_SYSTEM -lnls -lnsl_s
 166 #endif /* HAVE_X_WINDOWS */
 167
 168 #ifdef __GNUC__
 169  /* Use builtin alloca. Also be sure that no other ones are tried out. */
 170 # define alloca __builtin_alloca
 171 # define HAVE_ALLOCA
 172  /* Union lisp objects do not yet work as of 19.15. */
 173 /* # undef NO_UNION_TYPE */
 174
 175  /* We are assuming here that the `true' GNU gcc has not been
 176     installed, and we are using the gnucc provided by Motorola.  No
 177     support exists for compiling with GNU gcc, as I do not have it on
 178     my machine to try it out.  -pot@cnuce.cnr.it
 179     If __STDC__ is defined gnucc has been called without the -traditional
 180     option, that is, we are inside configure.  If THIS_IS_CONFIGURE is
 181     not defined, then configure is trying to figure out what the right
 182     option for real compilation are.
 183     Let us set -traditional, because gmalloc.c includes <stddef.h>, and
 184     we don't have that (as of SYSV68 R3V7). */
 185 #  define C_SWITCH_MACHINE -mfp0ret -traditional -Dconst= -fdelayed-branch -fstrength-reduce -fno-inline -fcaller-saves
 186 #  define LIB_GCC /lib/gnulib881
 187
 188 #else
 189  /* Not __GNUC__, use the alloca in alloca.s. */
 190
 191  /* Try to guess if we are using the Green Hills Compiler */
 192 # if defined mc68000 && defined MC68000
 193    /* Required only for use with Green Hills compiler:
 194         -ga      Because alloca relies on stack frames. This option forces
 195                  the Green Hills compiler to create stack frames even for
 196                  functions with few local variables. */
 197 #  define C_SWITCH_MACHINE -ga -O
 198 #  define GAP_USE_BCOPY         /* *++to = *++from  is inefficient */
 199 #  define BCOPY_UPWARD_SAFE 0
 200 #  define BCOPY_DOWNWARD_SAFE 1 /* bcopy does: mov.b (%a1)+,(%a0)+ */
 201 # else
 202  /* We are using the standard AT&T Portable C Compiler */
 203 #  define SWITCH_ENUM_BUG
 204 # endif
 205
 206 #endif /* not __GNUC__ */