code.delx.au - gnu-emacs/blob - src/m/iris4d.h

   1 /* machine description file for Iris-4D machines.  Use with s/irix*.h.
   2    Copyright (C) 1987, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
   3                  2008  Free Software Foundation, Inc.
   4
   5 This file is part of GNU Emacs.
   6
   7 GNU Emacs is free software: you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation, either version 3 of the License, or
  10 (at your option) any later version.
  11
  12 GNU Emacs is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20
  21 /* Define WORDS_BIG_ENDIAN if lowest-numbered byte in a word
  22    is the most significant byte.  */
  23
  24 #define WORDS_BIG_ENDIAN
  25
  26 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  27  * group of arguments and treat it as an array of the arguments.  */
  28
  29 #define NO_ARG_ARRAY
  30
  31 /* Now define a symbol for the cpu type, if your compiler
  32    does not define it automatically:
  33    Ones defined so far include vax, m68000, ns16000, pyramid,
  34    orion, tahoe, APOLLO and many others */
  35
  36 #ifndef mips
  37 #define mips
  38 #endif
  39
  40 #ifndef IRIS_4D
  41 #define IRIS_4D
  42 #endif
  43
  44 /* Use type int rather than a union, to represent Lisp_Object */
  45 /* This is desirable for most machines.  */
  46
  47 #define NO_UNION_TYPE
  48
  49 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  50    the bit field into an int.  In other words, if bit fields
  51    are always unsigned.
  52
  53    If you use NO_UNION_TYPE, this flag does not matter.  */
  54
  55 #define EXPLICIT_SIGN_EXTEND
  56
  57 /* Define CANNOT_DUMP on machines where unexec does not work.
  58    Then the function dump-emacs will not be defined
  59    and temacs will do (load "loadup") automatically unless told otherwise.  */
  60
  61 #undef CANNOT_DUMP
  62
  63 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  64    pure and impure space as loaded can vary, and even their
  65    relative order cannot be relied on.
  66
  67    Otherwise Emacs assumes that text space precedes data space,
  68    numerically.  */
  69
  70 /* #define VIRT_ADDR_VARIES */
  71
  72 /* Define NO_REMAP if memory segmentation makes it not work well
  73    to change the boundary between the text section and data section
  74    when Emacs is dumped.  If you define this, the preloaded Lisp
  75    code will not be sharable; but that's better than failing completely.  */
  76
  77 #define NO_REMAP
  78
  79 /* This machine requires completely different unexec code
  80    which lives in a separate file.  Specify the file name.  */
  81
  82 #ifdef USG5_4
  83 #undef UNEXEC
  84 #define UNEXEC unexelf.o
  85 #else
  86 #define UNEXEC unexmips.o
  87 #endif
  88
  89 #define TEXT_START 0x400000
  90
  91 /*
  92  * DATA_SEG_BITS forces extra bits to be or'd in with any pointers which
  93  * were stored in a Lisp_Object (as Emacs uses fewer than 32 bits for
  94  * the value field of a LISP_OBJECT).
  95  */
  96
  97 #define DATA_START 0x10000000
  98 #define DATA_SEG_BITS   0x10000000
  99
 100 #undef LIBS_MACHINE
 101 #define LIBS_MACHINE
 102 #define LIBS_DEBUG
 103
 104 /* Define this if you have a fairly recent system,
 105    in which crt1.o and crt1.n should be used.  */
 106 #define HAVE_CRTN
 107
 108 #ifndef USG5_4
 109 #ifdef HAVE_CRTN
 110 /* Must define START-FILES so that the linker can find /usr/lib/crt0.o.  */
 111 #define START_FILES pre-crt0.o /usr/lib/crt1.o
 112 #define LIB_STANDARD -lc /usr/lib/crtn.o
 113 #else
 114 #define START_FILES pre-crt0.o /usr/lib/crt0.o
 115 /* The entry-point label (start of text segment) is `start', not `__start'.  */
 116 #define DEFAULT_ENTRY_ADDRESS start
 117 #define LIB_STANDARD -lc
 118 #endif
 119 #endif
 120 \f
 121 /* Use terminfo instead of termcap.  */
 122
 123 #define TERMINFO
 124
 125 /* Letter to use in finding device name of first pty,
 126   if system supports pty's.  'a' means it is /dev/ptya0  */
 127
 128 #undef FIRST_PTY_LETTER
 129 #define FIRST_PTY_LETTER 'q'
 130 \f
 131 #if _MIPS_SZLONG != 64
 132 /* fixme: should there be 64-bit defiitions?  (The ones below aren't
 133    OK.)  */
 134
 135 /* The standard definitions of these macros would work ok,
 136    but these are faster because the constants are short.  */
 137
 138 #define XUINT(a) (((unsigned)(a) << BITS_PER_INT-VALBITS) >> BITS_PER_INT-VALBITS)
 139
 140 #define XSET(var, type, ptr) \
 141    ((var) = ((int)(type) << VALBITS) + (((unsigned) (ptr) << BITS_PER_INT-VALBITS) >> BITS_PER_INT-VALBITS))
 142 #endif /* _LP64 */
 143
 144 /* arch-tag: fff5e139-9ae0-465d-afec-837c41ea0aa6
 145    (do not change this comment) */