| 1 | /* SPARC ELF specific backend routines. |
| 2 | Copyright (C) 2005-2014 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of BFD, the Binary File Descriptor library. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 3 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 19 | MA 02110-1301, USA. */ |
| 20 | |
| 21 | #include "elf/common.h" |
| 22 | #include "elf/internal.h" |
| 23 | |
| 24 | struct _bfd_sparc_elf_section_data |
| 25 | { |
| 26 | struct bfd_elf_section_data elf; |
| 27 | unsigned int do_relax, reloc_count; |
| 28 | }; |
| 29 | |
| 30 | #define sec_do_relax(sec) \ |
| 31 | ((struct _bfd_sparc_elf_section_data *) elf_section_data (sec))->do_relax |
| 32 | #define canon_reloc_count(sec) \ |
| 33 | ((struct _bfd_sparc_elf_section_data *) elf_section_data (sec))->reloc_count |
| 34 | |
| 35 | struct _bfd_sparc_elf_app_reg |
| 36 | { |
| 37 | unsigned char bind; |
| 38 | unsigned short shndx; |
| 39 | bfd *abfd; |
| 40 | char *name; |
| 41 | }; |
| 42 | |
| 43 | /* Sparc ELF linker hash table. */ |
| 44 | |
| 45 | struct _bfd_sparc_elf_link_hash_table |
| 46 | { |
| 47 | struct elf_link_hash_table elf; |
| 48 | |
| 49 | /* Short-cuts to get to dynamic linker sections. */ |
| 50 | asection *sdynbss; |
| 51 | asection *srelbss; |
| 52 | |
| 53 | union |
| 54 | { |
| 55 | bfd_signed_vma refcount; |
| 56 | bfd_vma offset; |
| 57 | } tls_ldm_got; |
| 58 | |
| 59 | /* Small local sym cache. */ |
| 60 | struct sym_cache sym_cache; |
| 61 | |
| 62 | /* Used by local STT_GNU_IFUNC symbols. */ |
| 63 | htab_t loc_hash_table; |
| 64 | void *loc_hash_memory; |
| 65 | |
| 66 | /* True if the target system is VxWorks. */ |
| 67 | int is_vxworks; |
| 68 | |
| 69 | /* The (unloaded but important) .rela.plt.unloaded section, for VxWorks. */ |
| 70 | asection *srelplt2; |
| 71 | |
| 72 | void (*put_word) (bfd *, bfd_vma, void *); |
| 73 | bfd_vma (*r_info) (Elf_Internal_Rela *, bfd_vma, bfd_vma); |
| 74 | bfd_vma (*r_symndx) (bfd_vma); |
| 75 | int (*build_plt_entry) (bfd *, asection *, bfd_vma, bfd_vma, bfd_vma *); |
| 76 | const char *dynamic_interpreter; |
| 77 | int dynamic_interpreter_size; |
| 78 | unsigned int word_align_power; |
| 79 | unsigned int align_power_max; |
| 80 | unsigned int plt_header_size; |
| 81 | unsigned int plt_entry_size; |
| 82 | int bytes_per_word; |
| 83 | int bytes_per_rela; |
| 84 | int dtpoff_reloc; |
| 85 | int dtpmod_reloc; |
| 86 | int tpoff_reloc; |
| 87 | |
| 88 | struct _bfd_sparc_elf_app_reg app_regs [4]; |
| 89 | }; |
| 90 | |
| 91 | /* Get the SPARC ELF linker hash table from a link_info structure. */ |
| 92 | |
| 93 | #define _bfd_sparc_elf_hash_table(p) \ |
| 94 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
| 95 | == SPARC_ELF_DATA ? ((struct _bfd_sparc_elf_link_hash_table *) ((p)->hash)) : NULL) |
| 96 | |
| 97 | extern reloc_howto_type *_bfd_sparc_elf_reloc_type_lookup |
| 98 | (bfd *, bfd_reloc_code_real_type); |
| 99 | extern reloc_howto_type *_bfd_sparc_elf_reloc_name_lookup |
| 100 | (bfd *, const char *); |
| 101 | extern void _bfd_sparc_elf_info_to_howto |
| 102 | (bfd *, arelent *, Elf_Internal_Rela *); |
| 103 | extern reloc_howto_type *_bfd_sparc_elf_info_to_howto_ptr |
| 104 | (unsigned int); |
| 105 | extern bfd_boolean _bfd_sparc_elf_mkobject |
| 106 | (bfd *); |
| 107 | extern struct bfd_link_hash_table *_bfd_sparc_elf_link_hash_table_create |
| 108 | (bfd *); |
| 109 | extern bfd_boolean _bfd_sparc_elf_create_dynamic_sections |
| 110 | (bfd *, struct bfd_link_info *); |
| 111 | extern void _bfd_sparc_elf_copy_indirect_symbol |
| 112 | (struct bfd_link_info *, |
| 113 | struct elf_link_hash_entry *, |
| 114 | struct elf_link_hash_entry *); |
| 115 | extern bfd_boolean _bfd_sparc_elf_check_relocs |
| 116 | (bfd *, struct bfd_link_info *, |
| 117 | asection *, const Elf_Internal_Rela *); |
| 118 | extern asection *_bfd_sparc_elf_gc_mark_hook |
| 119 | (asection *, struct bfd_link_info *, |
| 120 | Elf_Internal_Rela *, struct elf_link_hash_entry *, |
| 121 | Elf_Internal_Sym *); |
| 122 | extern bfd_boolean _bfd_sparc_elf_gc_sweep_hook |
| 123 | (bfd *, struct bfd_link_info *, |
| 124 | asection *, const Elf_Internal_Rela *); |
| 125 | extern bfd_boolean _bfd_sparc_elf_adjust_dynamic_symbol |
| 126 | (struct bfd_link_info *, struct elf_link_hash_entry *); |
| 127 | extern bfd_boolean _bfd_sparc_elf_omit_section_dynsym |
| 128 | (bfd *, struct bfd_link_info *, asection *); |
| 129 | extern bfd_boolean _bfd_sparc_elf_size_dynamic_sections |
| 130 | (bfd *, struct bfd_link_info *); |
| 131 | extern bfd_boolean _bfd_sparc_elf_new_section_hook |
| 132 | (bfd *, asection *); |
| 133 | extern bfd_boolean _bfd_sparc_elf_relax_section |
| 134 | (bfd *, struct bfd_section *, struct bfd_link_info *, bfd_boolean *); |
| 135 | extern bfd_boolean _bfd_sparc_elf_relocate_section |
| 136 | (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
| 137 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **); |
| 138 | extern bfd_boolean _bfd_sparc_elf_finish_dynamic_symbol |
| 139 | (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
| 140 | Elf_Internal_Sym *sym); |
| 141 | extern bfd_boolean _bfd_sparc_elf_finish_dynamic_sections |
| 142 | (bfd *, struct bfd_link_info *); |
| 143 | extern bfd_boolean _bfd_sparc_elf_object_p |
| 144 | (bfd *); |
| 145 | extern bfd_vma _bfd_sparc_elf_plt_sym_val |
| 146 | (bfd_vma, const asection *, const arelent *); |
| 147 | extern bfd_boolean _bfd_sparc_elf_merge_private_bfd_data |
| 148 | (bfd *, bfd *); |