gcc/config/rs6000/xm-rs6000.h

   1 /* Configuration for GNU C-compiler for IBM RS/6000 running AIX in 32-bit mode.
   2    Copyright (C) 1990, 1993, 1995, 1998 Free Software Foundation, Inc.
   3    Contributed by Richard Kenner (kenner@vlsi1.ultra.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, 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22
  23 /* #defines that need visibility everywhere.  */
  24 #define FALSE   0
  25 #define TRUE    1
  26
  27 /* This describes the machine the compiler is hosted on.  */
  28 #define HOST_BITS_PER_CHAR      8
  29 #define HOST_BITS_PER_SHORT     16
  30 #define HOST_BITS_PER_INT       32
  31 #define HOST_BITS_PER_LONG      32
  32 #define HOST_BITS_PER_LONGLONG  64
  33
  34 #define HOST_WORDS_BIG_ENDIAN
  35
  36 /* target machine dependencies.
  37    tm.h is a symbolic link to the actual target specific file.   */
  38 #include "tm.h"
  39
  40 /* Arguments to use with `exit'.  */
  41 #define SUCCESS_EXIT_CODE       0
  42 #define FATAL_EXIT_CODE         33
  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 #if __STDC__
  48 extern void *alloca ();
  49 #else
  50 extern char *alloca ();
  51 #endif
  52 #define ONLY_INT_FIELDS
  53 #endif
  54
  55 /* AIX is a flavor of System V */
  56 #define USG
  57
  58 /* Big buffers improve performance.  */
  59 #define IO_BUFFER_SIZE (0x8000 - 4096)
  60
  61 #ifndef CROSS_COMPILE
  62 /* The AIX linker will discard static constructors in object files before
  63    collect has a chance to see them, so scan the object files directly.  */
  64 #define COLLECT_EXPORT_LIST
  65 #endif