linuxspe.h revision 302408 
1/* Definitions of target machine for GNU compiler,
2   for PowerPC e500 machines running GNU/Linux.
3   Copyright (C) 2003, 2004 Free Software Foundation, Inc.
4   Contributed by Aldy Hernandez (aldy@quesejoda.com).
5
6   This file is part of GCC.
7
8   GCC is free software; you can redistribute it and/or modify it
9   under the terms of the GNU General Public License as published
10   by the Free Software Foundation; either version 2, or (at your
11   option) any later version.
12
13   GCC is distributed in the hope that it will be useful, but WITHOUT
14   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
16   License for more details.
17
18   You should have received a copy of the GNU General Public License
19   along with GCC; see the file COPYING.  If not, write to the
20   Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
21   MA 02110-1301, USA.  */
22
23#undef  TARGET_VERSION
24#define TARGET_VERSION fprintf (stderr, " (PowerPC E500 GNU/Linux)");
25
26/* Override rs6000.h and sysv4.h definition.  */
27#undef	TARGET_DEFAULT
28#define	TARGET_DEFAULT (MASK_POWERPC | MASK_NEW_MNEMONICS | MASK_STRICT_ALIGN)
29
30#undef TARGET_SPE_ABI
31#undef TARGET_SPE
32#undef TARGET_E500
33#undef TARGET_ISEL
34#undef TARGET_FPRS
35#undef TARGET_E500_SINGLE
36#undef TARGET_E500_DOUBLE
37
38#define TARGET_SPE_ABI rs6000_spe_abi
39#define TARGET_SPE rs6000_spe
40#define TARGET_E500 (rs6000_cpu == PROCESSOR_PPC8540)
41#define TARGET_ISEL rs6000_isel
42#define TARGET_FPRS (rs6000_float_gprs == 0)
43#define TARGET_E500_SINGLE (TARGET_HARD_FLOAT && rs6000_float_gprs == 1)
44#define TARGET_E500_DOUBLE (TARGET_HARD_FLOAT && rs6000_float_gprs == 2)
45
46#undef  SUBSUBTARGET_OVERRIDE_OPTIONS
47#define SUBSUBTARGET_OVERRIDE_OPTIONS \
48  if (rs6000_select[1].string == NULL) \
49    rs6000_cpu = PROCESSOR_PPC8540; \
50  if (!rs6000_explicit_options.abi) \
51    rs6000_spe_abi = 1; \
52  if (!rs6000_explicit_options.float_gprs) \
53    rs6000_float_gprs = 1; \
54  /* See note below.  */ \
55  /*if (!rs6000_explicit_options.long_double)*/ \
56  /*  rs6000_long_double_type_size = 128;*/ \
57  if (!rs6000_explicit_options.spe) \
58    rs6000_spe = 1; \
59  if (!rs6000_explicit_options.isel) \
60    rs6000_isel = 1; \
61  if (target_flags & MASK_64BIT) \
62    error ("-m64 not supported in this configuration")
63
64/* The e500 ABI says that either long doubles are 128 bits, or if
65   implemented in any other size, the compiler/linker should error out.
66   We have no emulation libraries for 128 bit long doubles, and I hate
67   the dozens of failures on the regression suite.  So I'm breaking ABI
68   specifications, until I properly fix the emulation.
69
70   Enable these later.
71#undef CPP_LONGDOUBLE_DEFAULT_SPEC
72#define CPP_LONGDOUBLE_DEFAULT_SPEC "-D__LONG_DOUBLE_128__=1"
73*/
74
75#undef  ASM_DEFAULT_SPEC
76#define	ASM_DEFAULT_SPEC "-mppc -mspe -me500"
77