code.delx.au - gnu-emacs/blob - src/m/m68k.h

   1 /* Machine description file for generic Motorola 68k.
   2    Copyright (C) 1985, 1995, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
   3                  2008, 2009, 2010, 2011  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 /* Define WORDS_BIG_ENDIAN if lowest-numbered byte in a word
  21    is the most significant byte.  */
  22
  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
  28 #ifndef m68k
  29 #define m68k
  30 #endif
  31
  32 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  33    the 24-bit bit field into an int.  In other words, if bit fields
  34    are always unsigned.
  35
  36    This flag only matters if you use USE_LISP_UNION_TYPE.  */
  37
  38 #define EXPLICIT_SIGN_EXTEND
  39
  40 #ifdef GNU_LINUX
  41 #ifdef __ELF__
  42 #define DATA_SEG_BITS 0x80000000
  43 #endif
  44
  45 #define NO_REMAP
  46 #define TEXT_START 0
  47 #endif
  48
  49 /* arch-tag: 4eadd161-b4e8-4b82-82a1-e4ce7f42969d
  50    (do not change this comment) */