bfd/elfxx-mips.h

   1 /* MIPS ELF specific backend routines.
   2    Copyright (C) 2002-2017 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 *, const 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 bfd_boolean _bfd_mips_elf_sort_relocs_p
  71   (asection *);
  72 extern void _bfd_mips_elf_final_write_processing
  73   (bfd *, bfd_boolean);
  74 extern int _bfd_mips_elf_additional_program_headers
  75   (bfd *, struct bfd_link_info *);
  76 extern bfd_boolean _bfd_mips_elf_modify_segment_map
  77   (bfd *, struct bfd_link_info *);
  78 extern asection * _bfd_mips_elf_gc_mark_hook
  79   (asection *, struct bfd_link_info *, Elf_Internal_Rela *,
  80    struct elf_link_hash_entry *, Elf_Internal_Sym *);
  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 *, struct bfd_link_info *);
 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_vma _bfd_mips_elf_sign_extend
 141   (bfd_vma, int);
 142 extern void _bfd_mips_elf_merge_symbol_attribute
 143   (struct elf_link_hash_entry *, const Elf_Internal_Sym *, bfd_boolean, bfd_boolean);
 144 extern char *_bfd_mips_elf_get_target_dtag (bfd_vma);
 145 extern bfd_boolean _bfd_mips_elf_ignore_undef_symbol
 146   (struct elf_link_hash_entry *);
 147 extern void _bfd_mips_elf_use_plts_and_copy_relocs
 148   (struct bfd_link_info *);
 149 extern void _bfd_mips_elf_linker_flags
 150   (struct bfd_link_info *, bfd_boolean, bfd_boolean);
 151 extern bfd_boolean _bfd_mips_elf_init_stubs
 152   (struct bfd_link_info *,
 153    asection *(*) (const char *, asection *, asection *));
 154 extern bfd_vma _bfd_mips_elf_plt_sym_val
 155   (bfd_vma, const asection *, const arelent *rel);
 156 extern long _bfd_mips_elf_get_synthetic_symtab
 157   (bfd *, long, asymbol **, long, asymbol **, asymbol **);
 158 extern bfd_boolean _bfd_mips_elf_gc_mark_extra_sections
 159   (struct bfd_link_info *, elf_gc_mark_hook_fn);
 160 extern void _bfd_mips_post_process_headers
 161   (bfd *abfd, struct bfd_link_info *link_info);
 162
 163 extern const struct bfd_elf_special_section _bfd_mips_elf_special_sections [];
 164
 165 extern bfd_boolean _bfd_mips_elf_common_definition (Elf_Internal_Sym *);
 166
 167 extern int _bfd_mips_elf_compact_eh_encoding (struct bfd_link_info *);
 168 extern int _bfd_mips_elf_cant_unwind_opcode (struct bfd_link_info *);
 169
 170 static inline bfd_boolean
 171 gprel16_reloc_p (unsigned int r_type)
 172 {
 173   return (r_type == R_MIPS_GPREL16
 174           || r_type == R_MIPS16_GPREL
 175           || r_type == R_MICROMIPS_GPREL16
 176           || r_type == R_MICROMIPS_GPREL7_S2);
 177 }
 178
 179 static inline bfd_boolean
 180 literal_reloc_p (int r_type)
 181 {
 182   return r_type == R_MIPS_LITERAL || r_type == R_MICROMIPS_LITERAL;
 183 }
 184
 185 #define elf_backend_common_definition   _bfd_mips_elf_common_definition
 186 #define elf_backend_name_local_section_symbols \
 187   _bfd_mips_elf_name_local_section_symbols
 188 #define elf_backend_special_sections _bfd_mips_elf_special_sections
 189 #define elf_backend_eh_frame_address_size _bfd_mips_elf_eh_frame_address_size
 190 #define elf_backend_merge_symbol_attribute  _bfd_mips_elf_merge_symbol_attribute
 191 #define elf_backend_ignore_undef_symbol _bfd_mips_elf_ignore_undef_symbol
 192 #define elf_backend_post_process_headers _bfd_mips_post_process_headers
 193 #define elf_backend_compact_eh_encoding _bfd_mips_elf_compact_eh_encoding
 194 #define elf_backend_cant_unwind_opcode _bfd_mips_elf_cant_unwind_opcode
 195 #define elf_backend_always_renumber_dynsyms TRUE