code.delx.au - gnu-emacs/blob - src/m/iris5d.h

   1 /* machine description file for Iris-4D 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 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
  21 /* The following line tells the configuration script what sort of
  22    operating system this machine is likely to run.
  23    USUAL-OPSYS="irix3-3"  */
  24
  25 /* The following three symbols give information on
  26  the size of various data types.  */
  27
  28 #define SHORTBITS 16            /* Number of bits in a short */
  29
  30 #define INTBITS 32              /* Number of bits in an int */
  31
  32 #define LONGBITS 32             /* Number of bits in a long */
  33
  34 /* Define BIG_ENDIAN iff lowest-numbered byte in a word
  35    is the most significant byte.  */
  36
  37 #define BIG_ENDIAN
  38
  39 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  40  * group of arguments and treat it as an array of the arguments.  */
  41
  42 #define NO_ARG_ARRAY
  43
  44 /* Define WORD_MACHINE if addresses and such have
  45  * to be corrected before they can be used as byte counts.  */
  46
  47 #undef WORD_MACHINE
  48
  49 /* Now define a symbol for the cpu type, if your compiler
  50    does not define it automatically:
  51    Ones defined so far include vax, m68000, ns16000, pyramid,
  52    orion, tahoe, APOLLO and many others */
  53
  54 #ifndef mips
  55 #define mips
  56 #endif
  57
  58 #ifndef IRIS_4D
  59 #define IRIS_4D
  60 #endif
  61
  62 /* Use type int rather than a union, to represent Lisp_Object */
  63 /* This is desirable for most machines.  */
  64
  65 #define NO_UNION_TYPE
  66
  67 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  68    the 24-bit bit field into an int.  In other words, if bit fields
  69    are always unsigned.
  70
  71    If you use NO_UNION_TYPE, this flag does not matter.  */
  72
  73 #define EXPLICIT_SIGN_EXTEND
  74
  75 /* Data type of load average, as read out of kmem.  */
  76
  77 #define LOAD_AVE_TYPE long      /* This doesn't quite work on the 4D */
  78
  79 /* Convert that into an integer that is 100 for a load average of 1.0  */
  80
  81 #define LOAD_AVE_CVT(x) (int)(((double)(x)*100)/1024.0)
  82
  83 /* s-iris3-6.h uses /vmunix */
  84
  85 #undef KERNEL_FILE
  86 #define KERNEL_FILE "/unix"
  87
  88 /* Define CANNOT_DUMP on machines where unexec does not work.
  89    Then the function dump-emacs will not be defined
  90    and temacs will do (load "loadup") automatically unless told otherwise.  */
  91
  92 #undef CANNOT_DUMP
  93
  94 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  95    pure and impure space as loaded can vary, and even their
  96    relative order cannot be relied on.
  97
  98    Otherwise Emacs assumes that text space precedes data space,
  99    numerically.  */
 100
 101 /* #define VIRT_ADDR_VARIES */
 102
 103 /* Define C_ALLOCA if this machine does not support a true alloca
 104    and the one written in C should be used instead.
 105    Define HAVE_ALLOCA to say that the system provides a properly
 106    working alloca function and it should be used.
 107    Define neither one if an assembler-language alloca
 108    in the file alloca.s should be used.  */
 109
 110 #define C_ALLOCA
 111 /* #define HAVE_ALLOCA */
 112
 113 /* Define NO_REMAP if memory segmentation makes it not work well
 114    to change the boundary between the text section and data section
 115    when Emacs is dumped.  If you define this, the preloaded Lisp
 116    code will not be sharable; but that's better than failing completely.  */
 117
 118 #define NO_REMAP
 119
 120 /* This machine requires completely different unexec code
 121    which lives in a separate file.  Specify the file name.  */
 122
 123 #ifdef UNEXEC
 124 #undef UNEXEC
 125 #endif
 126 #define UNEXEC unexelfsgi.o
 127
 128 #define TEXT_START 0x400000
 129
 130 /*
 131  * DATA_SEG_BITS forces that bit to be or'd in with any pointers which
 132  * are trying to access pure strings (as gnu-emacs only allows 24 bits
 133  * for the value field of a LISP_OBJECT).
 134  */
 135
 136 #define DATA_START 0x10000000
 137 #define DATA_SEG_BITS   0x10000000
 138
 139 #undef LIBS_MACHINE
 140 /* -lsun in case using Yellow Pages for passwords.  */
 141 #define LIBS_MACHINE -lsun -lmld
 142 #define LIBS_DEBUG
 143
 144 /* Define this if you have a fairly recent system,
 145    in which crt1.o and crt1.n should be used.  */
 146 #define HAVE_CRTN
 147
 148 #ifdef HAVE_CRTN
 149 /* Must define START-FILES so that the linker can find /usr/lib/crt0.o.  */
 150 #define START_FILES pre-crt0.o /usr/lib/crt1.o
 151 #define LIB_STANDARD -lbsd -lc /usr/lib/crtn.o
 152 #else
 153 #define START_FILES pre-crt0.o /usr/lib/crt0.o
 154 /* The entry-point label (start of text segment) is `start', not `__start'.  */
 155 #define DEFAULT_ENTRY_ADDRESS start
 156 #define LIB_STANDARD -lbsd -lc
 157 #endif
 158 \f
 159 /* Use terminfo instead of termcap.  */
 160
 161 #define TERMINFO
 162
 163 /* sioctl.h should be included where appropriate.  */
 164
 165 #define NEED_SIOCTL
 166
 167 /* Letter to use in finding device name of first pty,
 168   if system supports pty's.  'a' means it is /dev/ptya0  */
 169
 170 #undef FIRST_PTY_LETTER
 171 #define FIRST_PTY_LETTER 'q'
 172
 173 /* Define STACK_DIRECTION for alloca.c */
 174
 175 #define STACK_DIRECTION -1
 176 \f
 177 /* The standard definitions of these macros would work ok,
 178    but these are faster because the constants are short.  */
 179
 180 #define XUINT(a) (((unsigned)(a) << INTBITS-VALBITS) >> INTBITS-VALBITS)
 181
 182 #define XSET(var, type, ptr) \
 183    ((var) = ((int)(type) << VALBITS) + (((unsigned) (ptr) << INTBITS-VALBITS) >> INTBITS-VALBITS))
 184
 185 #define XSETINT(a, b)  XSET(a, XTYPE(a), b)
 186 #define XSETUINT(a, b) XSET(a, XTYPE(a), b)
 187 #define XSETPNTR(a, b) XSET(a, XTYPE(a), b)
 188
 189 #define XMARKBIT(a) ((a) < 0)
 190 #define XSETMARKBIT(a,b) ((a) = ((a) & ~MARKBIT) | ((b) ? MARKBIT : 0))
 191 #define XUNMARK(a) ((a) = (((unsigned)(a) << INTBITS-GCTYPEBITS-VALBITS) >> INTBITS-GCTYPEBITS-VALBITS))
 192
 193 /* Turn off some "helpful" error checks for type mismatches
 194    that we can't fix without breaking other machines.  */
 195 #define C_SWITCH_MACHINE -cckr