src/m/m68k.h

   1 /* Machine description file for generic Motorola 68k.
   2
   3 Copyright (C) 1985, 1995, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
   4   2008, 2009, 2010  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 3 of the License, or
  11 (at your option) 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.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21 /* Define WORDS_BIG_ENDIAN if lowest-numbered byte in a word
  22    is the most significant byte.  */
  23 #define WORDS_BIG_ENDIAN
  24
  25 /* Now define a symbol for the cpu type, if your compiler
  26    does not define it automatically.  */
  27 #ifndef m68k
  28 #define m68k
  29 #endif
  30
  31 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  32    the 24-bit 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 #define EXPLICIT_SIGN_EXTEND
  37
  38 #ifdef GNU_LINUX
  39 #ifdef __ELF__
  40 #define DATA_SEG_BITS 0x80000000
  41 #endif
  42
  43 #endif
  44
  45 /* arch-tag: 4eadd161-b4e8-4b82-82a1-e4ce7f42969d
  46    (do not change this comment) */