gcc/config/rs6000/xm-rs6000.h

   1 /* Configuration for GNU C-compiler for IBM RS/6000.
   2    Copyright (C) 1990, 1993 Free Software Foundation, Inc.
   3    Contributed by Richard Kenner (kenner@nyu.edu).
   4
   5 This file is part of GNU CC.
   6
   7 GNU CC 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 2, or (at your option)
  10 any later version.
  11
  12 GNU CC 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 CC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  21
  22 /* #defines that need visibility everywhere.  */
  23 #define FALSE   0
  24 #define TRUE    1
  25
  26 /* This describes the machine the compiler is hosted on.  */
  27 #define HOST_BITS_PER_CHAR      8
  28 #define HOST_BITS_PER_SHORT     16
  29 #define HOST_BITS_PER_INT       32
  30 #define HOST_BITS_PER_LONG      32
  31 #define HOST_BITS_PER_LONGLONG 64
  32
  33 #define HOST_WORDS_BIG_ENDIAN
  34
  35 /* target machine dependencies.
  36    tm.h is a symbolic link to the actual target specific file.   */
  37 #include "tm.h"
  38
  39 /* Arguments to use with `exit'.  */
  40 #define SUCCESS_EXIT_CODE       0
  41 #define FAILURE_EXIT_CODE       2
  42 #define FATAL_EXIT_CODE         3
  43
  44 /* If not compiled with GNU C, use the C alloca and use only int bitfields.  */
  45 #ifndef __GNUC__
  46 #define USE_C_ALLOCA
  47 #define ONLY_INT_FIELDS
  48 #endif
  49
  50 /* AIX is a flavor of System V */
  51 #define USG
  52
  53 /* Big buffers improve performance.  */
  54 #define IO_BUFFER_SIZE (0x8000 - 4096)