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, 2009, 2010  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 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  32    the bit field into an int.  In other words, if bit fields
  33    are always unsigned.
  34
  35    This flag only matters if you use USE_LISP_UNION_TYPE.  */
  36
  37 #define EXPLICIT_SIGN_EXTEND
  38
  39 /* This machine requires completely different unexec code
  40    which lives in a separate file.  Specify the file name.  */
  41
  42 #undef UNEXEC
  43 #define UNEXEC unexelf.o
  44
  45 #define TEXT_START 0x400000
  46
  47 /*
  48  * DATA_SEG_BITS forces extra bits to be or'd in with any pointers which
  49  * were stored in a Lisp_Object (as Emacs uses fewer than 32 bits for
  50  * the value field of a LISP_OBJECT).
  51  */
  52
  53 #define DATA_START 0x10000000
  54 #define DATA_SEG_BITS   0x10000000
  55
  56 #undef LIBS_MACHINE
  57 #define LIBS_MACHINE
  58 #define LIBS_DEBUG
  59 \f
  60 /* Use terminfo instead of termcap.  */
  61
  62 #define TERMINFO
  63
  64 /* Letter to use in finding device name of first pty,
  65   if system supports pty's.  'a' means it is /dev/ptya0  */
  66
  67 #undef FIRST_PTY_LETTER
  68 #define FIRST_PTY_LETTER 'q'
  69 \f
  70 #if _MIPS_SZLONG != 64
  71 /* fixme: should there be 64-bit definitions?  (The ones below aren't OK.)  */
  72
  73 /* The standard definitions of these macros would work ok,
  74    but these are faster because the constants are short.  */
  75
  76 #define XUINT(a) (((unsigned)(a) << BITS_PER_INT-VALBITS) >> BITS_PER_INT-VALBITS)
  77
  78 #define XSET(var, type, ptr) \
  79    ((var) = ((int)(type) << VALBITS) + (((unsigned) (ptr) << BITS_PER_INT-VALBITS) >> BITS_PER_INT-VALBITS))
  80 #endif /* _LP64 */
  81
  82 /* arch-tag: fff5e139-9ae0-465d-afec-837c41ea0aa6
  83    (do not change this comment) */