src/m/arm.h

   1 /* Machine description file for ARM-based non-RISCiX machines.
   2    Copyright (C) 1994 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 2, 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, Inc., 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21
  22
  23 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
  24    is the most significant byte.  */
  25
  26 #undef WORDS_BIG_ENDIAN
  27
  28 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  29  * group of arguments and treat it as an array of the arguments.  We can't
  30  * do this on the arm with gcc, since the first 4 args are in registers.  */
  31
  32 #ifdef __GNUC__
  33 #define NO_ARG_ARRAY
  34 #else
  35 #undef NO_ARG_ARRAY
  36 #endif
  37
  38 /* Define WORD_MACHINE if addresses and such have
  39  * to be corrected before they can be used as byte counts.  */
  40
  41 #undef WORD_MACHINE
  42
  43 /* Define how to take a char and sign-extend into an int.
  44    On machines where char is signed, this is a no-op.  */
  45
  46 #define SIGN_EXTEND_CHAR(c) (((int)(c) << 24) >> 24)
  47
  48 #define NO_UNION_TYPE
  49
  50 #ifdef __GNUC__
  51
  52 /* Use builtin alloca. Also be sure that no other ones are tried out. */
  53 #define alloca __builtin_alloca
  54 #define HAVE_ALLOCA
  55
  56 #else
  57 #define C_ALLOCA
  58 #undef HAVE_ALLOCA
  59 #endif  /* __GNUC__ */
  60
  61 #define NO_REMAP
  62
  63 #define STACK_DIRECTION -1