src/m/iris5d.h

   1 /* machine description file for Iris-5D machines.  Use with s-iris3-6.h
   2    Copyright (C) 1987 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="irix3-3"  */
  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 #undef WORD_MACHINE
  40
  41 /* Now define a symbol for the cpu type, if your compiler
  42    does not define it automatically:
  43    Ones defined so far include vax, m68000, ns16000, pyramid,
  44    orion, tahoe, APOLLO and many others */
  45
  46 #ifndef mips
  47 #define mips
  48 #endif
  49
  50 #ifndef IRIS_4D
  51 #define IRIS_4D
  52 #endif
  53
  54 /* Use type int rather than a union, to represent Lisp_Object */
  55 /* This is desirable for most machines.  */
  56
  57 #define NO_UNION_TYPE
  58
  59 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  60    the bit field into an int.  In other words, if bit fields
  61    are always unsigned.
  62
  63    If you use NO_UNION_TYPE, this flag does not matter.  */
  64
  65 #define EXPLICIT_SIGN_EXTEND
  66
  67 /* Data type of load average, as read out of kmem.  */
  68
  69 #define LOAD_AVE_TYPE long      /* This doesn't quite work on the 4D */
  70
  71 /* Convert that into an integer that is 100 for a load average of 1.0  */
  72
  73 #define LOAD_AVE_CVT(x) (int)(((double)(x)*100)/1024.0)
  74
  75 /* s-iris3-6.h uses /vmunix */
  76
  77 #undef KERNEL_FILE
  78 #define KERNEL_FILE "/unix"
  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 #undef 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 text space precedes data 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 /* This machine requires completely different unexec code
 113    which lives in a separate file.  Specify the file name.  */
 114
 115 #ifdef UNEXEC
 116 #undef UNEXEC
 117 #endif
 118 #define UNEXEC unexsgi.o
 119
 120 #define TEXT_START 0x400000
 121
 122 /*
 123  * DATA_SEG_BITS forces extra bits to be or'd in with any pointers which
 124  * were stored in a Lisp_Object (as Emacs uses fewer than 32 bits for
 125  * the value field of a LISP_OBJECT).
 126  */
 127
 128 #define DATA_START 0x10000000
 129 #define DATA_SEG_BITS   0x10000000
 130
 131 #undef LIBS_MACHINE
 132 /* -lsun in case using Yellow Pages for passwords.  */
 133 #if defined(__GNUC__) && defined(_ABIN32)
 134 #define LIBS_MACHINE -lsun
 135 #else
 136 #define LIBS_MACHINE -lsun -lmld
 137 #endif
 138
 139 #define LIBS_DEBUG
 140
 141 /* Define this if you have a fairly recent system,
 142    in which crt1.o and crt1.n should be used.  */
 143 #define HAVE_CRTN
 144
 145 #ifdef HAVE_CRTN
 146 /* Must define START-FILES so that the linker can find /usr/lib/crt0.o.  */
 147 #define START_FILES pre-crt0.o /usr/lib/crt1.o
 148 #define LIB_STANDARD -lbsd -lc /usr/lib/crtn.o
 149 #else
 150 #define START_FILES pre-crt0.o /usr/lib/crt0.o
 151 /* The entry-point label (start of text segment) is `start', not `__start'.  */
 152 #define DEFAULT_ENTRY_ADDRESS start
 153 #define LIB_STANDARD -lbsd -lc
 154 #endif
 155 \f
 156 /* Use terminfo instead of termcap.  */
 157
 158 #define TERMINFO
 159
 160 /* sioctl.h should be included where appropriate.  */
 161
 162 #define NEED_SIOCTL
 163
 164 /* Letter to use in finding device name of first pty,
 165   if system supports pty's.  'a' means it is /dev/ptya0  */
 166
 167 #undef FIRST_PTY_LETTER
 168 #define FIRST_PTY_LETTER 'q'
 169
 170 /* Define STACK_DIRECTION for alloca.c */
 171
 172 #define STACK_DIRECTION -1
 173 \f
 174 /* The standard definitions of these macros would work ok,
 175    but these are faster because the constants are short.  */
 176
 177 #define XUINT(a) (((unsigned)(a) << BITS_PER_INT-VALBITS) >> BITS_PER_INT-VALBITS)
 178
 179 #define XSET(var, type, ptr) \
 180    ((var) = ((int)(type) << VALBITS) + (((unsigned) (ptr) << BITS_PER_INT-VALBITS) >> BITS_PER_INT-VALBITS))
 181
 182 #define XMARKBIT(a) ((a) < 0)
 183 #define XSETMARKBIT(a,b) ((a) = ((a) & ~MARKBIT) | ((b) ? MARKBIT : 0))
 184 #define XUNMARK(a) ((a) = (((unsigned)(a) << BITS_PER_INT-GCTYPEBITS-VALBITS) >> BITS_PER_INT-GCTYPEBITS-VALBITS))
 185
 186 #ifndef __GNUC__
 187 /* Turn off some "helpful" error checks for type mismatches
 188    that we can't fix without breaking other machines.  */
 189 #define C_SWITCH_MACHINE -cckr
 190 #endif