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1 | /* Definitions for ARM running ucLinux using ELF |
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2 | Copyright (C) 1999-2016 Free Software Foundation, Inc. |
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3 | Contributed by Philip Blundell <pb@nexus.co.uk> |
| 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 |
| 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 |
| 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. |
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16 | |
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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 | |
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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 |
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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. */ |
| 27 | #undef NEED_PLT_RELOC |
| 28 | #define NEED_PLT_RELOC 0 |
| 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 | |
| 33 | /* NOTE: The remaining definitions in this file are needed because uclinux |
| 34 | does not use config/linux.h. */ |
| 35 | |
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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 | |
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51 | /* Do not assume anything about header files. */ |
| 52 | #define NO_IMPLICIT_EXTERN_C |
| 53 | |
| 54 | /* The GNU C++ standard library requires that these macros be defined. */ |
| 55 | #undef CPLUSPLUS_CPP_SPEC |
| 56 | #define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)" |
| 57 | |
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58 | #undef SUBTARGET_EXTRA_LINK_SPEC |
| 59 | #define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux" |
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60 | |
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61 | /* Now we define the strings used to build the spec file. */ |
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62 | #undef STARTFILE_SPEC |
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63 | #define STARTFILE_SPEC "crt1%O%s crti%O%s crtbegin%O%s" |
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64 | |
| 65 | #undef ENDFILE_SPEC |
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66 | #define ENDFILE_SPEC "crtend%O%s crtn%O%s" |
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67 | |
| 68 | #undef CC1_SPEC |
| 69 | #define CC1_SPEC "%{profile:-p}" |
| 70 | |
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71 | #undef LINK_GCC_C_SEQUENCE_SPEC |
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72 | #define LINK_GCC_C_SEQUENCE_SPEC \ |
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73 | "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G %L}" |
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74 | |
| 75 | /* Use --as-needed -lgcc_s for eh support. */ |
| 76 | #ifdef HAVE_LD_AS_NEEDED |
| 77 | #define USE_LD_AS_NEEDED 1 |
| 78 | #endif |
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79 | |
| 80 | #undef LINK_SPEC |
| 81 | #define LINK_SPEC "%{mbig-endian:-EB} %{mlittle-endian:-EL} -X -elf2flt" |
| 82 | |
| 83 | #undef LIB_SPEC |
| 84 | #define LIB_SPEC \ |
| 85 | "%{pthread:-lpthread} \ |
| 86 | %{shared:-lc} \ |
| 87 | %{!shared:%{profile:-lc_p}%{!profile:-lc}}" |
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88 | |
| 89 | #define TARGET_DEFAULT_WORD_RELOCATIONS 1 |
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