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/* Definitions for ARM running Linux-based GNU systems using ELF
Copyright (C) 1993-2016 Free Software Foundation, Inc.
Contributed by Philip Blundell <philb@gnu.org>
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.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
/* elfos.h should have already been included. Now just override
any conflicting definitions and add any extras. */
/* Run-time Target Specification. */
#undef TARGET_DEFAULT_FLOAT_ABI
#define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_HARD
/* TARGET_BIG_ENDIAN_DEFAULT is set in
config.gcc for big endian configurations. */
#if TARGET_BIG_ENDIAN_DEFAULT
#define TARGET_ENDIAN_DEFAULT MASK_BIG_END
#define TARGET_ENDIAN_OPTION "mbig-endian"
#define TARGET_LINKER_EMULATION "armelfb_linux"
#else
#define TARGET_ENDIAN_DEFAULT 0
#define TARGET_ENDIAN_OPTION "mlittle-endian"
#define TARGET_LINKER_EMULATION "armelf_linux"
#endif
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (TARGET_ENDIAN_DEFAULT)
#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm6
#define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION " -p"
/* We do not have any MULTILIB_OPTIONS specified, so there are no
MULTILIB_DEFAULTS. */
#undef MULTILIB_DEFAULTS
/* Now we define the strings used to build the spec file. */
#undef LIB_SPEC
#define LIB_SPEC \
"%{pthread:-lpthread} \
%{shared:-lc} \
%{!shared:%{profile:-lc_p}%{!profile:-lc}}"
#define LIBGCC_SPEC "%{mfloat-abi=soft*:-lfloat} -lgcc"
#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
#define LINUX_TARGET_LINK_SPEC "%{h*} \
%{static:-Bstatic} \
%{shared:-shared} \
%{symbolic:-Bsymbolic} \
%{!static: \
%{rdynamic:-export-dynamic} \
%{!shared:-dynamic-linker " GNU_USER_DYNAMIC_LINKER "}} \
-X \
%{mbig-endian:-EB} %{mlittle-endian:-EL}" \
SUBTARGET_EXTRA_LINK_SPEC
#undef LINK_SPEC
#define LINK_SPEC LINUX_TARGET_LINK_SPEC
#define TARGET_OS_CPP_BUILTINS() \
do \
{ \
GNU_USER_TARGET_OS_CPP_BUILTINS(); \
} \
while (0)
#undef FPUTYPE_DEFAULT
#define FPUTYPE_DEFAULT "vfp"
/* Call the function profiler with a given profile label. */
#undef ARM_FUNCTION_PROFILER
#define ARM_FUNCTION_PROFILER(STREAM, LABELNO) \
{ \
fprintf (STREAM, "\tbl\tmcount%s\n", \
(TARGET_ARM && NEED_PLT_RELOC) ? "(PLT)" : ""); \
}
/* The GNU/Linux profiler clobbers the link register. Make sure the
prologue knows to save it. */
#define PROFILE_HOOK(X) \
emit_clobber (gen_rtx_REG (SImode, LR_REGNUM))
/* The GNU/Linux profiler needs a frame pointer. */
#define SUBTARGET_FRAME_POINTER_REQUIRED crtl->profile
/* Add .note.GNU-stack. */
#undef NEED_INDICATE_EXEC_STACK
#define NEED_INDICATE_EXEC_STACK 1
/* Uninitialized common symbols in non-PIE executables, even with
strong definitions in dependent shared libraries, will resolve
to COPY relocated symbol in the executable. See PR65780. */
#undef TARGET_BINDS_LOCAL_P
#define TARGET_BINDS_LOCAL_P default_binds_local_p_2
/* Define this to be nonzero if static stack checking is supported. */
#define STACK_CHECK_STATIC_BUILTIN 1
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