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 /* Print subsidiary information on the compiler version in use.  */
  26 #define TARGET_VERSION fprintf (stderr, " (Mach-RS/6000)");
  27
  28 /* We don't define AIX under MACH; instead we define `unix'.  */
  29 #undef TARGET_OS_CPP_BUILTINS
  30 #define TARGET_OS_CPP_BUILTINS()         \
  31   do                                     \
  32     {                                    \
  33       builtin_define_std ("rios");       \
  34       builtin_define ("_IBMR2");         \
  35       builtin_define_std ("unix");       \
  36       builtin_assert ("system=unix");    \
  37       builtin_assert ("system=mach");    \
  38       builtin_assert ("cpu=rs6000");     \
  39       builtin_assert ("machine=rs6000"); \
  40     }                                    \
  41   while (0)
  42
  43 /* Define different binder options for MACH.  */
  44 #undef LINK_SPEC
  45 #define LINK_SPEC \
  46  "-T0x10000000 -D0x20000000 -K %{!nostdlib:%{!r*:%{!e*:-e __start}}} \
  47   -bnoso -berrmsg -btextro -bhalt:4 -bnodelcsect"
  48
  49 /* MACH doesn't have atexit.  */
  50 #define NEED_ATEXIT
  51
  52 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
  53    we want to retain compatibility with older gcc versions.  */
  54 #define DEFAULT_PCC_STRUCT_RETURN 0