gcc/config/rs6000/mach.h

   1 /* Definitions of target machine for GNU compiler,
   2    for IBM RS/6000 running MACH.
   3    Copyright (C) 1992, 1999 Free Software Foundation, Inc.
   4    Contributed by Richard Kenner (kenner@nyu.edu)
   5
   6 This file is part of GNU CC.
   7
   8 GNU CC 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 2, or (at your option)
  11 any later version.
  12
  13 GNU CC 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 CC; see the file COPYING.  If not, write to
  20 the Free Software Foundation, 59 Temple Place - Suite 330,
  21 Boston, MA 02111-1307, USA.  */
  22
  23 #define TARGET_AIX 0
  24
  25 #include "rs6000/rs6000.h"
  26
  27 /* We don't define AIX under MACH; instead we define `unix'.  */
  28 #undef CPP_PREDEFINES
  29 #define CPP_PREDEFINES "-Drios -D_IBMR2 -Dunix -Asystem(unix) -Asystem(mach) -Acpu(rs6000) -Amachine(rs6000)"
  30
  31 /* Define different binder options for MACH.  */
  32 #undef LINK_SPEC
  33 #define LINK_SPEC \
  34  "-T0x10000000 -D0x20000000 -K %{!nostdlib:%{!r*:%{!e*:-e __start}}} \
  35   -bnoso -berrmsg -btextro -bhalt:4 -bnodelcsect"
  36
  37 /* MACH doesn't have atexit.  */
  38 #define NEED_ATEXIT
  39
  40 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
  41    we want to retain compatibility with older gcc versions.  */
  42 #define DEFAULT_PCC_STRUCT_RETURN 0