/* Definitions for ARM running Linux-based GNU systems using ELF
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Copyright (C) 1993-2020 Free Software Foundation, Inc.
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Contributed by Philip Blundell <philb@gnu.org>
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 3, or (at your
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option) any later version.
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GCC is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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/* elfos.h should have already been included. Now just override
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any conflicting definitions and add any extras. */
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/* Run-time Target Specification. */
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#undef TARGET_DEFAULT_FLOAT_ABI
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#define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_HARD
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/* TARGET_BIG_ENDIAN_DEFAULT is set in
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config.gcc for big endian configurations. */
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#if TARGET_BIG_ENDIAN_DEFAULT
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#define TARGET_ENDIAN_DEFAULT MASK_BIG_END
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#define TARGET_ENDIAN_OPTION "mbig-endian"
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#define TARGET_LINKER_EMULATION "armelfb_linux"
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#else
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#define TARGET_ENDIAN_DEFAULT 0
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#define TARGET_ENDIAN_OPTION "mlittle-endian"
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#define TARGET_LINKER_EMULATION "armelf_linux"
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#endif
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#undef TARGET_DEFAULT
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#define TARGET_DEFAULT (TARGET_ENDIAN_DEFAULT)
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#define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION " -p"
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/* We do not have any MULTILIB_OPTIONS specified, so there are no
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MULTILIB_DEFAULTS. */
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#undef MULTILIB_DEFAULTS
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/* Now we define the strings used to build the spec file. */
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#undef LIB_SPEC
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#define LIB_SPEC \
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"%{pthread:-lpthread} \
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%{shared:-lc} \
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%{!shared:%{profile:-lc_p}%{!profile:-lc}}"
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#define LIBGCC_SPEC "%{mfloat-abi=soft*:-lfloat} -lgcc"
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#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
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#define LINUX_TARGET_LINK_SPEC "%{h*} \
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%{static:-Bstatic} \
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%{shared:-shared} \
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%{symbolic:-Bsymbolic} \
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%{!static: \
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%{rdynamic:-export-dynamic} \
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%{!shared:-dynamic-linker " GNU_USER_DYNAMIC_LINKER "}} \
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-X \
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%{mbig-endian:-EB} %{mlittle-endian:-EL}" \
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SUBTARGET_EXTRA_LINK_SPEC
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#undef LINK_SPEC
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#define LINK_SPEC LINUX_TARGET_LINK_SPEC
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#define TARGET_OS_CPP_BUILTINS() \
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do \
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{ \
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GNU_USER_TARGET_OS_CPP_BUILTINS(); \
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} \
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while (0)
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/* Call the function profiler with a given profile label. */
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#undef ARM_FUNCTION_PROFILER
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#define ARM_FUNCTION_PROFILER(STREAM, LABELNO) \
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{ \
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fprintf (STREAM, "\tbl\tmcount%s\n", \
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(TARGET_ARM && NEED_PLT_RELOC) ? "(PLT)" : ""); \
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}
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/* The GNU/Linux profiler clobbers the link register. Make sure the
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prologue knows to save it. */
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#define PROFILE_HOOK(X) \
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emit_clobber (gen_rtx_REG (SImode, LR_REGNUM))
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/* The GNU/Linux profiler needs a frame pointer. */
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#define SUBTARGET_FRAME_POINTER_REQUIRED crtl->profile
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/* Add .note.GNU-stack. */
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#undef NEED_INDICATE_EXEC_STACK
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#define NEED_INDICATE_EXEC_STACK 1
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/* Uninitialized common symbols in non-PIE executables, even with
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strong definitions in dependent shared libraries, will resolve
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to COPY relocated symbol in the executable. See PR65780. */
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#undef TARGET_BINDS_LOCAL_P
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#define TARGET_BINDS_LOCAL_P default_binds_local_p_2
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/* Define this to be nonzero if static stack checking is supported. */
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#define STACK_CHECK_STATIC_BUILTIN 1
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