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1 /* Definitions for ARM running ucLinux using ELF
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2 Copyright (C) 1999-2018 Free Software Foundation, Inc.
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3 Contributed by Philip Blundell <pb@nexus.co.uk>
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4
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5 This file is part of GCC.
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6
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7 GCC is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published
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9 by the Free Software Foundation; either version 3, or (at your
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10 option) any later version.
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11
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12 GCC is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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15 License for more details.
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16
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111
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17 Under Section 7 of GPL version 3, you are granted additional
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18 permissions described in the GCC Runtime Library Exception, version
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19 3.1, as published by the Free Software Foundation.
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20
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21 You should have received a copy of the GNU General Public License and
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22 a copy of the GCC Runtime Library Exception along with this program;
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23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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24 <http://www.gnu.org/licenses/>. */
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25
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26 /* We don't want a PLT. */
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27 #undef NEED_PLT_RELOC
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28 #define NEED_PLT_RELOC 0
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29
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30 #undef TARGET_DEFAULT
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31 #define TARGET_DEFAULT (MASK_SINGLE_PIC_BASE)
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32
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33 /* NOTE: The remaining definitions in this file are needed because uclinux
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34 does not use config/linux.h. */
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35
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36 /* Add GNU/Linux builtins. */
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37 #undef TARGET_OS_CPP_BUILTINS
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38 #define TARGET_OS_CPP_BUILTINS() \
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39 do \
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40 { \
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41 builtin_define ("__uClinux__"); \
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42 builtin_define ("__gnu_linux__"); \
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43 builtin_define_std ("linux"); \
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44 builtin_define_std ("unix"); \
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45 builtin_assert ("system=linux"); \
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46 builtin_assert ("system=unix"); \
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47 builtin_assert ("system=posix"); \
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48 } \
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49 while (false)
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50
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51 /* The GNU C++ standard library requires that these macros be defined. */
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52 #undef CPLUSPLUS_CPP_SPEC
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53 #define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
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54
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55 #undef SUBTARGET_EXTRA_LINK_SPEC
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56 #define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux"
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57
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58 /* Now we define the strings used to build the spec file. */
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59 #undef STARTFILE_SPEC
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60 #define STARTFILE_SPEC "crt1%O%s crti%O%s crtbegin%O%s"
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61
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62 #undef ENDFILE_SPEC
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63 #define ENDFILE_SPEC "crtend%O%s crtn%O%s"
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64
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65 #undef CC1_SPEC
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66 #define CC1_SPEC "%{profile:-p}"
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67
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68 #undef LINK_GCC_C_SEQUENCE_SPEC
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69 #define LINK_GCC_C_SEQUENCE_SPEC \
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70 "%{static|static-pie:--start-group} %G %{!nolibc:%L} \
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71 %{static|static-pie:--end-group}%{!static:%{!static-pie:%G %{!nolibc:%L}}}"
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0
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72
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73 /* Use --as-needed -lgcc_s for eh support. */
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74 #ifdef HAVE_LD_AS_NEEDED
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75 #define USE_LD_AS_NEEDED 1
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76 #endif
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77
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78 #undef LINK_SPEC
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79 #define LINK_SPEC "%{mbig-endian:-EB} %{mlittle-endian:-EL} -X -elf2flt"
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80
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81 #undef LIB_SPEC
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82 #define LIB_SPEC \
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83 "%{pthread:-lpthread} \
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84 %{shared:-lc} \
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85 %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
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86
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87 #define TARGET_DEFAULT_WORD_RELOCATIONS 1
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