bfd/elfxx-mips.h

   1 /* MIPS ELF specific backend routines.
   2    Copyright (C) 2002-2020 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_final_write_processing
  73   (bfd *);
  74 extern bfd_boolean _bfd_mips_elf_final_write_processing
  75   (bfd *);
  76 extern int _bfd_mips_elf_additional_program_headers
  77   (bfd *, struct bfd_link_info *);
  78 extern bfd_boolean _bfd_mips_elf_modify_segment_map
  79   (bfd *, struct bfd_link_info *);
  80 extern asection * _bfd_mips_elf_gc_mark_hook
  81   (asection *, struct bfd_link_info *, Elf_Internal_Rela *,
  82    struct elf_link_hash_entry *, Elf_Internal_Sym *);
  83 extern void _bfd_mips_elf_copy_indirect_symbol
  84   (struct bfd_link_info *, struct elf_link_hash_entry *,
  85    struct elf_link_hash_entry *);
  86 extern void _bfd_mips_elf_hide_symbol
  87   (struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean);
  88 extern bfd_boolean _bfd_mips_elf_ignore_discarded_relocs
  89   (asection *);
  90 extern bfd_boolean _bfd_mips_elf_is_target_special_symbol
  91   (bfd *abfd, asymbol *sym);
  92 extern bfd_boolean _bfd_mips_elf_find_nearest_line
  93   (bfd *, asymbol **, asection *, bfd_vma,
  94    const char **, const char **, unsigned int *, unsigned int *);
  95 extern bfd_boolean _bfd_mips_elf_find_inliner_info
  96   (bfd *, const char **, const char **, unsigned int *);
  97 extern bfd_boolean _bfd_mips_elf_set_section_contents
  98   (bfd *, asection *, const void *, file_ptr, bfd_size_type);
  99 extern bfd_byte *_bfd_elf_mips_get_relocated_section_contents
 100   (bfd *, struct bfd_link_info *, struct bfd_link_order *,
 101    bfd_byte *, bfd_boolean, asymbol **);
 102 extern bfd_boolean _bfd_mips_elf_relax_section
 103   (bfd *abfd, asection *sec, struct bfd_link_info *link_info,
 104    bfd_boolean *again);
 105 extern struct bfd_link_hash_table *_bfd_mips_elf_link_hash_table_create
 106   (bfd *);
 107 extern struct bfd_link_hash_table *_bfd_mips_vxworks_link_hash_table_create
 108   (bfd *);
 109 extern bfd_boolean _bfd_mips_elf_final_link
 110   (bfd *, struct bfd_link_info *);
 111 extern bfd_boolean _bfd_mips_elf_merge_private_bfd_data
 112   (bfd *, struct bfd_link_info *);
 113 extern bfd_boolean _bfd_mips_elf_set_private_flags
 114   (bfd *, flagword);
 115 extern const char * _bfd_mips_fp_abi_string
 116   (int);
 117 extern bfd_boolean _bfd_mips_elf_print_private_bfd_data
 118   (bfd *, void *);
 119 extern bfd_boolean _bfd_mips_elf_discard_info
 120   (bfd *, struct elf_reloc_cookie *, struct bfd_link_info *);
 121 extern bfd_boolean _bfd_mips_elf_write_section
 122   (bfd *, struct bfd_link_info *, asection *, bfd_byte *);
 123
 124 extern bfd_boolean _bfd_mips_elf_read_ecoff_info
 125   (bfd *, asection *, struct ecoff_debug_info *);
 126 extern void _bfd_mips_elf_reloc_unshuffle
 127   (bfd *, int, bfd_boolean, bfd_byte *);
 128 extern void _bfd_mips_elf_reloc_shuffle
 129   (bfd *, int, bfd_boolean, bfd_byte *);
 130 extern bfd_reloc_status_type _bfd_mips_elf_gprel16_with_gp
 131   (bfd *, asymbol *, arelent *, asection *, bfd_boolean, void *, bfd_vma);
 132 extern bfd_reloc_status_type _bfd_mips_elf32_gprel16_reloc
 133   (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
 134 extern bfd_reloc_status_type _bfd_mips_elf_hi16_reloc
 135   (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
 136 extern bfd_reloc_status_type _bfd_mips_elf_got16_reloc
 137   (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
 138 extern bfd_reloc_status_type _bfd_mips_elf_lo16_reloc
 139   (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
 140 extern bfd_reloc_status_type _bfd_mips_elf_generic_reloc
 141   (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
 142 extern unsigned long _bfd_elf_mips_mach
 143   (flagword);
 144 extern bfd_vma _bfd_mips_elf_sign_extend
 145   (bfd_vma, int);
 146 extern void _bfd_mips_elf_merge_symbol_attribute
 147   (struct elf_link_hash_entry *, unsigned int, bfd_boolean, bfd_boolean);
 148 extern char *_bfd_mips_elf_get_target_dtag (bfd_vma);
 149 extern bfd_boolean _bfd_mips_elf_ignore_undef_symbol
 150   (struct elf_link_hash_entry *);
 151 extern void _bfd_mips_elf_use_plts_and_copy_relocs
 152   (struct bfd_link_info *);
 153 extern void _bfd_mips_elf_linker_flags
 154   (struct bfd_link_info *, bfd_boolean, bfd_boolean, bfd_boolean);
 155 extern void _bfd_mips_elf_compact_branches
 156   (struct bfd_link_info *, bfd_boolean);
 157 extern bfd_boolean _bfd_mips_elf_init_stubs
 158   (struct bfd_link_info *,
 159    asection *(*) (const char *, asection *, asection *));
 160 extern bfd_vma _bfd_mips_elf_plt_sym_val
 161   (bfd_vma, const asection *, const arelent *rel);
 162 extern long _bfd_mips_elf_get_synthetic_symtab
 163   (bfd *, long, asymbol **, long, asymbol **, asymbol **);
 164 extern bfd_boolean _bfd_mips_elf_gc_mark_extra_sections
 165   (struct bfd_link_info *, elf_gc_mark_hook_fn);
 166 extern bfd_boolean _bfd_mips_init_file_header
 167   (bfd *abfd, struct bfd_link_info *link_info);
 168
 169 extern const struct bfd_elf_special_section _bfd_mips_elf_special_sections [];
 170
 171 extern bfd_boolean _bfd_mips_elf_common_definition (Elf_Internal_Sym *);
 172
 173 extern int _bfd_mips_elf_compact_eh_encoding (struct bfd_link_info *);
 174 extern int _bfd_mips_elf_cant_unwind_opcode (struct bfd_link_info *);
 175
 176 extern void _bfd_mips_elf_record_xhash_symbol
 177   (struct elf_link_hash_entry *h, bfd_vma xlat_loc);
 178
 179 /* MIPS ABI flags data access.  For the disassembler.  */
 180 extern struct elf_internal_abiflags_v0 *bfd_mips_elf_get_abiflags (bfd *);
 181
 182 static inline bfd_boolean
 183 gprel16_reloc_p (unsigned int r_type)
 184 {
 185   return (r_type == R_MIPS_GPREL16
 186           || r_type == R_MIPS16_GPREL
 187           || r_type == R_MICROMIPS_GPREL16
 188           || r_type == R_MICROMIPS_GPREL7_S2);
 189 }
 190
 191 static inline bfd_boolean
 192 literal_reloc_p (int r_type)
 193 {
 194   return r_type == R_MIPS_LITERAL || r_type == R_MICROMIPS_LITERAL;
 195 }
 196
 197 #define elf_backend_common_definition   _bfd_mips_elf_common_definition
 198 #define elf_backend_name_local_section_symbols \
 199   _bfd_mips_elf_name_local_section_symbols
 200 #define elf_backend_special_sections _bfd_mips_elf_special_sections
 201 #define elf_backend_eh_frame_address_size _bfd_mips_elf_eh_frame_address_size
 202 #define elf_backend_merge_symbol_attribute  _bfd_mips_elf_merge_symbol_attribute
 203 #define elf_backend_ignore_undef_symbol _bfd_mips_elf_ignore_undef_symbol
 204 #define elf_backend_init_file_header _bfd_mips_init_file_header
 205 #define elf_backend_compact_eh_encoding _bfd_mips_elf_compact_eh_encoding
 206 #define elf_backend_cant_unwind_opcode _bfd_mips_elf_cant_unwind_opcode
 207 #define elf_backend_record_xhash_symbol _bfd_mips_elf_record_xhash_symbol
 208 #define elf_backend_always_renumber_dynsyms TRUE