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/* Definitions of target machine for GNU compiler,
for PowerPC machines running Linux.
Copyright (C) 1996-2013 Free Software Foundation, Inc.
Contributed by Michael Meissner (meissner@cygnus.com).
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
/* Linux doesn't support saving and restoring 64-bit regs in a 32-bit
process. */
#define OS_MISSING_POWERPC64 1
/* We use glibc _mcount for profiling. */
#define NO_PROFILE_COUNTERS 1
#ifdef SINGLE_LIBC
#define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
#else
#define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
#endif
/* glibc has float and long double forms of math functions. */
#undef TARGET_C99_FUNCTIONS
#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
/* Whether we have sincos that follows the GNU extension. */
#undef TARGET_HAS_SINCOS
#define TARGET_HAS_SINCOS (OPTION_GLIBC)
#undef TARGET_OS_CPP_BUILTINS
#define TARGET_OS_CPP_BUILTINS() \
do \
{ \
builtin_define_std ("PPC"); \
builtin_define_std ("powerpc"); \
builtin_assert ("cpu=powerpc"); \
builtin_assert ("machine=powerpc"); \
TARGET_OS_SYSV_CPP_BUILTINS (); \
} \
while (0)
#undef CPP_OS_DEFAULT_SPEC
#define CPP_OS_DEFAULT_SPEC "%(cpp_os_linux)"
/* The GNU C++ standard library currently requires _GNU_SOURCE being
defined on glibc-based systems. This temporary hack accomplishes this,
it should go away as soon as libstdc++-v3 has a real fix. */
#undef CPLUSPLUS_CPP_SPEC
#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
#undef LINK_SHLIB_SPEC
#define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: %{static:-static}}"
#undef LIB_DEFAULT_SPEC
#define LIB_DEFAULT_SPEC "%(lib_linux)"
#undef STARTFILE_DEFAULT_SPEC
#define STARTFILE_DEFAULT_SPEC "%(startfile_linux)"
#undef ENDFILE_DEFAULT_SPEC
#define ENDFILE_DEFAULT_SPEC "%(endfile_linux)"
#undef LINK_START_DEFAULT_SPEC
#define LINK_START_DEFAULT_SPEC "%(link_start_linux)"
#undef LINK_OS_DEFAULT_SPEC
#define LINK_OS_DEFAULT_SPEC "%(link_os_linux)"
#define LINK_GCC_C_SEQUENCE_SPEC \
"%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
/* Use --as-needed -lgcc_s for eh support. */
#ifdef HAVE_LD_AS_NEEDED
#define USE_LD_AS_NEEDED 1
#endif
/* Override rs6000.h definition. */
#undef ASM_APP_ON
#define ASM_APP_ON "#APP\n"
/* Override rs6000.h definition. */
#undef ASM_APP_OFF
#define ASM_APP_OFF "#NO_APP\n"
/* For backward compatibility, we must continue to use the AIX
structure return convention. */
#undef DRAFT_V4_STRUCT_RET
#define DRAFT_V4_STRUCT_RET 1
/* We are 32-bit all the time, so optimize a little. */
#undef TARGET_64BIT
#define TARGET_64BIT 0
/* We don't need to generate entries in .fixup, except when
-mrelocatable or -mrelocatable-lib is given. */
#undef RELOCATABLE_NEEDS_FIXUP
#define RELOCATABLE_NEEDS_FIXUP \
(rs6000_isa_flags & rs6000_isa_flags_explicit & OPTION_MASK_RELOCATABLE)
#define TARGET_POSIX_IO
#ifdef TARGET_LIBC_PROVIDES_SSP
/* ppc32 glibc provides __stack_chk_guard in -0x7008(2). */
#define TARGET_THREAD_SSP_OFFSET -0x7008
#endif
#define POWERPC_LINUX
/* ppc linux has 128-bit long double support in glibc 2.4 and later. */
#ifdef TARGET_DEFAULT_LONG_DOUBLE_128
#define RS6000_DEFAULT_LONG_DOUBLE_SIZE 128
#endif
/* Static stack checking is supported by means of probes. */
#define STACK_CHECK_STATIC_BUILTIN 1
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