1 /* Definitions for ARM running ucLinux using ELF 2 Copyright (C) 1999-2020 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 Under Section 7 of GPL version 3, you are granted additional 18 permissions described in the GCC Runtime Library Exception, version 19 3.1, as published by the Free Software Foundation. 20 21 You should have received a copy of the GNU General Public License and 22 a copy of the GCC Runtime Library Exception along with this program; 23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 24 <http://www.gnu.org/licenses/>. */ 25 26 /* We don't want a PLT. */ 27 #undef NEED_PLT_RELOC 28 #define NEED_PLT_RELOC 0 29 30 #undef TARGET_DEFAULT 31 #define TARGET_DEFAULT (MASK_SINGLE_PIC_BASE) 32 33 /* NOTE: The remaining definitions in this file are needed because uclinux 34 does not use config/linux.h. */ 35 36 /* Add GNU/Linux builtins. */ 37 #undef TARGET_OS_CPP_BUILTINS 38 #define TARGET_OS_CPP_BUILTINS() \ 39 do \ 40 { \ 41 builtin_define ("__uClinux__"); \ 42 builtin_define ("__gnu_linux__"); \ 43 builtin_define_std ("linux"); \ 44 builtin_define_std ("unix"); \ 45 builtin_assert ("system=linux"); \ 46 builtin_assert ("system=unix"); \ 47 builtin_assert ("system=posix"); \ 48 } \ 49 while (false) 50 51 /* The GNU C++ standard library requires that these macros be defined. */ 52 #undef CPLUSPLUS_CPP_SPEC 53 #define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)" 54 55 #undef SUBTARGET_EXTRA_LINK_SPEC 56 #define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux" 57 58 /* Now we define the strings used to build the spec file. */ 59 #undef STARTFILE_SPEC 60 #define STARTFILE_SPEC "crt1%O%s crti%O%s crtbegin%O%s" 61 62 #undef ENDFILE_SPEC 63 #define ENDFILE_SPEC "crtend%O%s crtn%O%s" 64 65 #undef CC1_SPEC 66 #define CC1_SPEC "%{profile:-p}" 67 68 #undef LINK_GCC_C_SEQUENCE_SPEC 69 #define LINK_GCC_C_SEQUENCE_SPEC \ 70 "%{static|static-pie:--start-group} %G %{!nolibc:%L} \ 71 %{static|static-pie:--end-group}%{!static:%{!static-pie:%G %{!nolibc:%L}}}" 72 73 /* Use --as-needed -lgcc_s for eh support. */ 74 #ifdef HAVE_LD_AS_NEEDED 75 #define USE_LD_AS_NEEDED 1 76 #endif 77 78 #undef LINK_SPEC 79 #define LINK_SPEC "%{mbig-endian:-EB} %{mlittle-endian:-EL} -X -elf2flt" 80 81 #undef LIB_SPEC 82 #define LIB_SPEC \ 83 "%{pthread:-lpthread} \ 84 %{shared:-lc} \ 85 %{!shared:%{profile:-lc_p}%{!profile:-lc}}" 86 87 #define TARGET_DEFAULT_WORD_RELOCATIONS 1 88