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)
6 This file is part of GNU CC.
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)
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.
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. */
25 /* We don't define AIX under MACH; instead we define `unix'. */
27 #define CPP_PREDEFINES "-Drios -D_IBMR2 -Dunix -Asystem=unix -Asystem=mach -Acpu=rs6000 -Amachine=rs6000"
29 /* Define different binder options for MACH. */
32 "-T0x10000000 -D0x20000000 -K %{!nostdlib:%{!r*:%{!e*:-e __start}}} \
33 -bnoso -berrmsg -btextro -bhalt:4 -bnodelcsect"
35 /* MACH doesn't have atexit. */
38 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
39 we want to retain compatibility with older gcc versions. */
40 #define DEFAULT_PCC_STRUCT_RETURN 0