1 /* MIPS ELF specific backend routines. 2 Copyright (C) 2002-2014 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 #include "elf/mips.h" 24 25 extern bfd_boolean _bfd_mips_elf_mkobject 26 (bfd *); 27 extern bfd_boolean _bfd_mips_elf_new_section_hook 28 (bfd *, asection *); 29 extern void _bfd_mips_elf_symbol_processing 30 (bfd *, asymbol *); 31 extern unsigned int _bfd_mips_elf_eh_frame_address_size 32 (bfd *, asection *); 33 extern bfd_boolean _bfd_mips_elf_name_local_section_symbols 34 (bfd *); 35 extern bfd_boolean _bfd_mips_elf_section_processing 36 (bfd *, Elf_Internal_Shdr *); 37 extern bfd_boolean _bfd_mips_elf_section_from_shdr 38 (bfd *, Elf_Internal_Shdr *, const char *, int); 39 extern bfd_boolean _bfd_mips_elf_fake_sections 40 (bfd *, Elf_Internal_Shdr *, asection *); 41 extern bfd_boolean _bfd_mips_elf_section_from_bfd_section 42 (bfd *, asection *, int *); 43 extern bfd_boolean _bfd_mips_elf_add_symbol_hook 44 (bfd *, struct bfd_link_info *, Elf_Internal_Sym *, 45 const char **, flagword *, asection **, bfd_vma *); 46 extern int _bfd_mips_elf_link_output_symbol_hook 47 (struct bfd_link_info *, const char *, Elf_Internal_Sym *, 48 asection *, struct elf_link_hash_entry *); 49 extern bfd_boolean _bfd_mips_elf_create_dynamic_sections 50 (bfd *, struct bfd_link_info *); 51 extern bfd_boolean _bfd_mips_elf_check_relocs 52 (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *); 53 extern bfd_boolean _bfd_mips_elf_adjust_dynamic_symbol 54 (struct bfd_link_info *, struct elf_link_hash_entry *); 55 extern bfd_boolean _bfd_mips_elf_always_size_sections 56 (bfd *, struct bfd_link_info *); 57 extern bfd_boolean _bfd_mips_elf_size_dynamic_sections 58 (bfd *, struct bfd_link_info *); 59 extern bfd_boolean _bfd_mips_elf_relocate_section 60 (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, 61 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **); 62 extern bfd_boolean _bfd_mips_elf_finish_dynamic_symbol 63 (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, 64 Elf_Internal_Sym *); 65 extern bfd_boolean _bfd_mips_vxworks_finish_dynamic_symbol 66 (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, 67 Elf_Internal_Sym *); 68 extern bfd_boolean _bfd_mips_elf_finish_dynamic_sections 69 (bfd *, struct bfd_link_info *); 70 extern void _bfd_mips_elf_final_write_processing 71 (bfd *, bfd_boolean); 72 extern int _bfd_mips_elf_additional_program_headers 73 (bfd *, struct bfd_link_info *); 74 extern bfd_boolean _bfd_mips_elf_modify_segment_map 75 (bfd *, struct bfd_link_info *); 76 extern asection * _bfd_mips_elf_gc_mark_hook 77 (asection *, struct bfd_link_info *, Elf_Internal_Rela *, 78 struct elf_link_hash_entry *, Elf_Internal_Sym *); 79 extern bfd_boolean _bfd_mips_elf_gc_sweep_hook 80 (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *); 81 extern void _bfd_mips_elf_copy_indirect_symbol 82 (struct bfd_link_info *, struct elf_link_hash_entry *, 83 struct elf_link_hash_entry *); 84 extern bfd_boolean _bfd_mips_elf_ignore_discarded_relocs 85 (asection *); 86 extern bfd_boolean _bfd_mips_elf_is_target_special_symbol 87 (bfd *abfd, asymbol *sym); 88 extern bfd_boolean _bfd_mips_elf_find_nearest_line 89 (bfd *, asymbol **, asection *, bfd_vma, 90 const char **, const char **, unsigned int *, unsigned int *); 91 extern bfd_boolean _bfd_mips_elf_find_inliner_info 92 (bfd *, const char **, const char **, unsigned int *); 93 extern bfd_boolean _bfd_mips_elf_set_section_contents 94 (bfd *, asection *, const void *, file_ptr, bfd_size_type); 95 extern bfd_byte *_bfd_elf_mips_get_relocated_section_contents 96 (bfd *, struct bfd_link_info *, struct bfd_link_order *, 97 bfd_byte *, bfd_boolean, asymbol **); 98 extern bfd_boolean _bfd_mips_elf_relax_section 99 (bfd *abfd, asection *sec, struct bfd_link_info *link_info, 100 bfd_boolean *again); 101 extern struct bfd_link_hash_table *_bfd_mips_elf_link_hash_table_create 102 (bfd *); 103 extern struct bfd_link_hash_table *_bfd_mips_vxworks_link_hash_table_create 104 (bfd *); 105 extern bfd_boolean _bfd_mips_elf_final_link 106 (bfd *, struct bfd_link_info *); 107 extern bfd_boolean _bfd_mips_elf_merge_private_bfd_data 108 (bfd *, bfd *); 109 extern bfd_boolean _bfd_mips_elf_set_private_flags 110 (bfd *, flagword); 111 extern const char * _bfd_mips_fp_abi_string 112 (int); 113 extern bfd_boolean _bfd_mips_elf_print_private_bfd_data 114 (bfd *, void *); 115 extern bfd_boolean _bfd_mips_elf_discard_info 116 (bfd *, struct elf_reloc_cookie *, struct bfd_link_info *); 117 extern bfd_boolean _bfd_mips_elf_write_section 118 (bfd *, struct bfd_link_info *, asection *, bfd_byte *); 119 120 extern bfd_boolean _bfd_mips_elf_read_ecoff_info 121 (bfd *, asection *, struct ecoff_debug_info *); 122 extern void _bfd_mips_elf_reloc_unshuffle 123 (bfd *, int, bfd_boolean, bfd_byte *); 124 extern void _bfd_mips_elf_reloc_shuffle 125 (bfd *, int, bfd_boolean, bfd_byte *); 126 extern bfd_reloc_status_type _bfd_mips_elf_gprel16_with_gp 127 (bfd *, asymbol *, arelent *, asection *, bfd_boolean, void *, bfd_vma); 128 extern bfd_reloc_status_type _bfd_mips_elf32_gprel16_reloc 129 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 130 extern bfd_reloc_status_type _bfd_mips_elf_hi16_reloc 131 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 132 extern bfd_reloc_status_type _bfd_mips_elf_got16_reloc 133 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 134 extern bfd_reloc_status_type _bfd_mips_elf_lo16_reloc 135 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 136 extern bfd_reloc_status_type _bfd_mips_elf_generic_reloc 137 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 138 extern unsigned long _bfd_elf_mips_mach 139 (flagword); 140 extern bfd_boolean _bfd_mips_relax_section 141 (bfd *, asection *, struct bfd_link_info *, bfd_boolean *); 142 extern bfd_vma _bfd_mips_elf_sign_extend 143 (bfd_vma, int); 144 extern void _bfd_mips_elf_merge_symbol_attribute 145 (struct elf_link_hash_entry *, const Elf_Internal_Sym *, bfd_boolean, bfd_boolean); 146 extern char *_bfd_mips_elf_get_target_dtag (bfd_vma); 147 extern bfd_boolean _bfd_mips_elf_ignore_undef_symbol 148 (struct elf_link_hash_entry *); 149 extern void _bfd_mips_elf_use_plts_and_copy_relocs 150 (struct bfd_link_info *); 151 extern void _bfd_mips_elf_insn32 152 (struct bfd_link_info *, bfd_boolean); 153 extern void _bfd_mips_elf_compact_branches 154 (struct bfd_link_info *, bfd_boolean); 155 extern bfd_boolean _bfd_mips_elf_init_stubs 156 (struct bfd_link_info *, 157 asection *(*) (const char *, asection *, asection *)); 158 extern bfd_vma _bfd_mips_elf_plt_sym_val 159 (bfd_vma, const asection *, const arelent *rel); 160 extern long _bfd_mips_elf_get_synthetic_symtab 161 (bfd *, long, asymbol **, long, asymbol **, asymbol **); 162 extern bfd_boolean _bfd_mips_elf_gc_mark_extra_sections 163 (struct bfd_link_info *, elf_gc_mark_hook_fn); 164 extern void _bfd_mips_post_process_headers 165 (bfd *abfd, struct bfd_link_info *link_info); 166 167 extern const struct bfd_elf_special_section _bfd_mips_elf_special_sections []; 168 169 extern bfd_boolean _bfd_mips_elf_common_definition (Elf_Internal_Sym *); 170 171 static inline bfd_boolean 172 gprel16_reloc_p (unsigned int r_type) 173 { 174 return (r_type == R_MIPS_GPREL16 175 || r_type == R_MIPS16_GPREL 176 || r_type == R_MICROMIPS_GPREL16 177 || r_type == R_MICROMIPS_GPREL7_S2); 178 } 179 180 static inline bfd_boolean 181 literal_reloc_p (int r_type) 182 { 183 return r_type == R_MIPS_LITERAL || r_type == R_MICROMIPS_LITERAL; 184 } 185 186 #define elf_backend_common_definition _bfd_mips_elf_common_definition 187 #define elf_backend_name_local_section_symbols \ 188 _bfd_mips_elf_name_local_section_symbols 189 #define elf_backend_special_sections _bfd_mips_elf_special_sections 190 #define elf_backend_eh_frame_address_size _bfd_mips_elf_eh_frame_address_size 191 #define elf_backend_merge_symbol_attribute _bfd_mips_elf_merge_symbol_attribute 192 #define elf_backend_ignore_undef_symbol _bfd_mips_elf_ignore_undef_symbol 193 #define elf_backend_post_process_headers _bfd_mips_post_process_headers 194
