1 /* Definitions for ARM running ucLinux using ELF 2 Copyright (C) 1999-2013 Free Software Foundation, Inc. 3 Contributed by Philip Blundell <pb@nexus.co.uk> 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it 8 under the terms of the GNU General Public License as published 9 by the Free Software Foundation; either version 3, or (at your 10 option) any later version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 15 License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GCC; see the file COPYING3. If not see 19 <http://www.gnu.org/licenses/>. */ 20 21 /* We don't want a PLT. */ 22 #undef NEED_PLT_RELOC 23 #define NEED_PLT_RELOC 0 24 25 #undef TARGET_DEFAULT 26 #define TARGET_DEFAULT (MASK_SINGLE_PIC_BASE) 27 28 /* NOTE: The remaining definitions in this file are needed because uclinux 29 does not use config/linux.h. */ 30 31 /* Add GNU/Linux builtins. */ 32 #undef TARGET_OS_CPP_BUILTINS 33 #define TARGET_OS_CPP_BUILTINS() \ 34 do \ 35 { \ 36 builtin_define ("__uClinux__"); \ 37 builtin_define ("__gnu_linux__"); \ 38 builtin_define_std ("linux"); \ 39 builtin_define_std ("unix"); \ 40 builtin_assert ("system=linux"); \ 41 builtin_assert ("system=unix"); \ 42 builtin_assert ("system=posix"); \ 43 } \ 44 while (false) 45 46 /* Do not assume anything about header files. */ 47 #define NO_IMPLICIT_EXTERN_C 48 49 /* The GNU C++ standard library requires that these macros be defined. */ 50 #undef CPLUSPLUS_CPP_SPEC 51 #define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)" 52 53 #undef SUBTARGET_EXTRA_LINK_SPEC 54 #define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux" 55 56 /* Now we define the strings used to build the spec file. */ 57 #undef STARTFILE_SPEC 58 #define STARTFILE_SPEC "crt1%O%s crti%O%s crtbegin%O%s" 59 60 #undef ENDFILE_SPEC 61 #define ENDFILE_SPEC "crtend%O%s crtn%O%s" 62 63 #undef CC1_SPEC 64 #define CC1_SPEC "%{profile:-p}" 65 66 #undef LINK_GCC_C_SEQUENCE_SPEC 67 #define LINK_GCC_C_SEQUENCE_SPEC \ 68 "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}" 69 70 /* Use --as-needed -lgcc_s for eh support. */ 71 #ifdef HAVE_LD_AS_NEEDED 72 #define USE_LD_AS_NEEDED 1 73 #endif 74 75 #undef LINK_SPEC 76 #define LINK_SPEC "%{mbig-endian:-EB} %{mlittle-endian:-EL} -X -elf2flt" 77 78 #undef LIB_SPEC 79 #define LIB_SPEC \ 80 "%{pthread:-lpthread} \ 81 %{shared:-lc} \ 82 %{!shared:%{profile:-lc_p}%{!profile:-lc}}" 83 84 #define TARGET_DEFAULT_WORD_RELOCATIONS 1 85