Viewing file:  uclinux-elf.h (2.86 KB) -rw-r--r--
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/* Definitions for ARM running ucLinux using ELF
Copyright (C) 1999-2022 Free Software Foundation, Inc.
Contributed by Philip Blundell <pb@nexus.co.uk>
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/>. */
/* We don't want a PLT. */
#undef NEED_PLT_RELOC
#define NEED_PLT_RELOC 0
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_SINGLE_PIC_BASE)
/* NOTE: The remaining definitions in this file are needed because uclinux
does not use config/linux.h. */
/* Add GNU/Linux builtins. */
#undef TARGET_OS_CPP_BUILTINS
#define TARGET_OS_CPP_BUILTINS() \
do \
{ \
builtin_define ("__uClinux__"); \
builtin_define ("__gnu_linux__"); \
builtin_define_std ("linux"); \
builtin_define_std ("unix"); \
builtin_assert ("system=linux"); \
builtin_assert ("system=unix"); \
builtin_assert ("system=posix"); \
} \
while (false)
/* The GNU C++ standard library requires that these macros be defined. */
#undef CPLUSPLUS_CPP_SPEC
#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
#undef SUBTARGET_EXTRA_LINK_SPEC
#define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux"
/* Now we define the strings used to build the spec file. */
#undef STARTFILE_SPEC
#define STARTFILE_SPEC "crt1%O%s crti%O%s crtbegin%O%s"
#undef ENDFILE_SPEC
#define ENDFILE_SPEC "crtend%O%s crtn%O%s"
#undef CC1_SPEC
#define CC1_SPEC "%{profile:-p}"
#undef LINK_GCC_C_SEQUENCE_SPEC
#define LINK_GCC_C_SEQUENCE_SPEC \
"%{static|static-pie:--start-group} %G %{!nolibc:%L} \
%{static|static-pie:--end-group}%{!static:%{!static-pie:%G %{!nolibc:%L}}}"
/* Use --as-needed -lgcc_s for eh support. */
#ifdef HAVE_LD_AS_NEEDED
#define USE_LD_AS_NEEDED 1
#endif
#undef LINK_SPEC
#define LINK_SPEC "%{mbig-endian:-EB} %{mlittle-endian:-EL} -X -elf2flt"
#undef LIB_SPEC
#define LIB_SPEC \
"%{pthread:-lpthread} \
%{shared:-lc} \
%{!shared:%{profile:-lc_p}%{!profile:-lc}}"
#define TARGET_DEFAULT_WORD_RELOCATIONS 1
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