bfd/elfxx-mips.h

   1 /* MIPS ELF specific backend routines.
   2    Copyright 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
   3    Free Software Foundation, Inc.
   4
   5    This file is part of BFD, the Binary File Descriptor library.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20    MA 02110-1301, USA.  */
  21
  22 #include "elf/common.h"
  23 #include "elf/internal.h"
  24 #include "elf/mips.h"
  25
  26 extern bfd_boolean _bfd_mips_elf_new_section_hook
  27   (bfd *, asection *);
  28 extern void _bfd_mips_elf_symbol_processing
  29   (bfd *, asymbol *);
  30 extern unsigned int _bfd_mips_elf_eh_frame_address_size
  31   (bfd *, asection *);
  32 extern bfd_boolean _bfd_mips_elf_name_local_section_symbols
  33   (bfd *);
  34 extern bfd_boolean _bfd_mips_elf_section_processing
  35   (bfd *, Elf_Internal_Shdr *);
  36 extern bfd_boolean _bfd_mips_elf_section_from_shdr
  37   (bfd *, Elf_Internal_Shdr *, const char *, int);
  38 extern bfd_boolean _bfd_mips_elf_fake_sections
  39   (bfd *, Elf_Internal_Shdr *, asection *);
  40 extern bfd_boolean _bfd_mips_elf_section_from_bfd_section
  41   (bfd *, asection *, int *);
  42 extern bfd_boolean _bfd_mips_elf_add_symbol_hook
  43   (bfd *, struct bfd_link_info *, Elf_Internal_Sym *,
  44    const char **, flagword *, asection **, bfd_vma *);
  45 extern int _bfd_mips_elf_link_output_symbol_hook
  46   (struct bfd_link_info *, const char *, Elf_Internal_Sym *,
  47    asection *, struct elf_link_hash_entry *);
  48 extern bfd_boolean _bfd_mips_elf_create_dynamic_sections
  49   (bfd *, struct bfd_link_info *);
  50 extern bfd_boolean _bfd_mips_elf_check_relocs
  51   (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
  52 extern bfd_boolean _bfd_mips_elf_adjust_dynamic_symbol
  53   (struct bfd_link_info *, struct elf_link_hash_entry *);
  54 extern bfd_boolean _bfd_mips_elf_always_size_sections
  55   (bfd *, struct bfd_link_info *);
  56 extern bfd_boolean _bfd_mips_elf_size_dynamic_sections
  57   (bfd *, struct bfd_link_info *);
  58 extern bfd_boolean _bfd_mips_elf_relocate_section
  59   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
  60    Elf_Internal_Rela *, Elf_Internal_Sym *, asection **);
  61 extern bfd_boolean _bfd_mips_elf_finish_dynamic_symbol
  62   (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
  63    Elf_Internal_Sym *);
  64 extern bfd_boolean _bfd_mips_vxworks_finish_dynamic_symbol
  65   (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
  66    Elf_Internal_Sym *);
  67 extern bfd_boolean _bfd_mips_elf_finish_dynamic_sections
  68   (bfd *, struct bfd_link_info *);
  69 extern void _bfd_mips_elf_final_write_processing
  70   (bfd *, bfd_boolean);
  71 extern int _bfd_mips_elf_additional_program_headers
  72   (bfd *, struct bfd_link_info *);
  73 extern bfd_boolean _bfd_mips_elf_modify_segment_map
  74   (bfd *, struct bfd_link_info *);
  75 extern asection * _bfd_mips_elf_gc_mark_hook
  76   (asection *, struct bfd_link_info *, Elf_Internal_Rela *,
  77    struct elf_link_hash_entry *, Elf_Internal_Sym *);
  78 extern bfd_boolean _bfd_mips_elf_gc_sweep_hook
  79   (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
  80 extern void _bfd_mips_elf_copy_indirect_symbol
  81   (struct bfd_link_info *, struct elf_link_hash_entry *,
  82    struct elf_link_hash_entry *);
  83 extern bfd_boolean _bfd_mips_elf_ignore_discarded_relocs
  84   (asection *);
  85 extern bfd_boolean _bfd_mips_elf_is_target_special_symbol
  86   (bfd *abfd, asymbol *sym);
  87 extern bfd_boolean _bfd_mips_elf_find_nearest_line
  88   (bfd *, asection *, asymbol **, bfd_vma, const char **,
  89    const char **, unsigned int *);
  90 extern bfd_boolean _bfd_mips_elf_find_inliner_info
  91   (bfd *, const char **, const char **, unsigned int *);
  92 extern bfd_boolean _bfd_mips_elf_set_section_contents
  93   (bfd *, asection *, const void *, file_ptr, bfd_size_type);
  94 extern bfd_byte *_bfd_elf_mips_get_relocated_section_contents
  95   (bfd *, struct bfd_link_info *, struct bfd_link_order *,
  96    bfd_byte *, bfd_boolean, asymbol **);
  97 extern bfd_boolean _bfd_mips_elf_relax_section
  98   (bfd *abfd, asection *sec, struct bfd_link_info *link_info,
  99    bfd_boolean *again);
 100 extern struct bfd_link_hash_table *_bfd_mips_elf_link_hash_table_create
 101   (bfd *);
 102 extern struct bfd_link_hash_table *_bfd_mips_vxworks_link_hash_table_create
 103   (bfd *);
 104 extern bfd_boolean _bfd_mips_elf_final_link
 105   (bfd *, struct bfd_link_info *);
 106 extern bfd_boolean _bfd_mips_elf_merge_private_bfd_data
 107   (bfd *, bfd *);
 108 extern bfd_boolean _bfd_mips_elf_set_private_flags
 109   (bfd *, flagword);
 110 extern bfd_boolean _bfd_mips_elf_print_private_bfd_data
 111   (bfd *, void *);
 112 extern bfd_boolean _bfd_mips_elf_discard_info
 113   (bfd *, struct elf_reloc_cookie *, struct bfd_link_info *);
 114 extern bfd_boolean _bfd_mips_elf_write_section
 115   (bfd *, struct bfd_link_info *, asection *, bfd_byte *);
 116
 117 extern bfd_boolean _bfd_mips_elf_read_ecoff_info
 118   (bfd *, asection *, struct ecoff_debug_info *);
 119 extern void _bfd_mips_elf_reloc_unshuffle
 120   (bfd *, int, bfd_boolean, bfd_byte *);
 121 extern void _bfd_mips_elf_reloc_shuffle
 122   (bfd *, int, bfd_boolean, bfd_byte *);
 123 extern bfd_reloc_status_type _bfd_mips_elf_gprel16_with_gp
 124   (bfd *, asymbol *, arelent *, asection *, bfd_boolean, void *, bfd_vma);
 125 extern bfd_reloc_status_type _bfd_mips_elf32_gprel16_reloc
 126   (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
 127 extern bfd_reloc_status_type _bfd_mips_elf_hi16_reloc
 128   (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
 129 extern bfd_reloc_status_type _bfd_mips_elf_got16_reloc
 130   (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
 131 extern bfd_reloc_status_type _bfd_mips_elf_lo16_reloc
 132   (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
 133 extern bfd_reloc_status_type _bfd_mips_elf_generic_reloc
 134   (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
 135 extern unsigned long _bfd_elf_mips_mach
 136   (flagword);
 137 extern bfd_boolean _bfd_mips_relax_section
 138   (bfd *, asection *, struct bfd_link_info *, bfd_boolean *);
 139 extern bfd_vma _bfd_mips_elf_sign_extend
 140   (bfd_vma, int);
 141 extern void _bfd_mips_elf_merge_symbol_attribute
 142   (struct elf_link_hash_entry *, const Elf_Internal_Sym *, bfd_boolean, bfd_boolean);
 143 extern char *_bfd_mips_elf_get_target_dtag (bfd_vma);
 144 extern bfd_boolean _bfd_mips_elf_ignore_undef_symbol
 145   (struct elf_link_hash_entry *);
 146 extern void _bfd_mips_elf_use_plts_and_copy_relocs
 147   (struct bfd_link_info *);
 148 extern bfd_boolean _bfd_mips_elf_init_stubs
 149   (struct bfd_link_info *,
 150    asection *(*) (const char *, asection *, asection *));
 151 extern bfd_vma _bfd_mips_elf_plt_sym_val
 152   (bfd_vma, const asection *, const arelent *rel);
 153 extern void _bfd_mips_post_process_headers
 154   (bfd *abfd, struct bfd_link_info *link_info);
 155
 156 extern const struct bfd_elf_special_section _bfd_mips_elf_special_sections [];
 157
 158 extern bfd_boolean _bfd_mips_elf_common_definition (Elf_Internal_Sym *);
 159
 160 static inline bfd_boolean
 161 gprel16_reloc_p (unsigned int r_type)
 162 {
 163   return (r_type == R_MIPS_GPREL16
 164           || r_type == R_MIPS16_GPREL
 165           || r_type == R_MICROMIPS_GPREL16
 166           || r_type == R_MICROMIPS_GPREL7_S2);
 167 }
 168
 169 static inline bfd_boolean
 170 literal_reloc_p (int r_type)
 171 {
 172   return r_type == R_MIPS_LITERAL || r_type == R_MICROMIPS_LITERAL;
 173 }
 174
 175 #define elf_backend_common_definition   _bfd_mips_elf_common_definition
 176 #define elf_backend_name_local_section_symbols \
 177   _bfd_mips_elf_name_local_section_symbols
 178 #define elf_backend_special_sections _bfd_mips_elf_special_sections
 179 #define elf_backend_eh_frame_address_size _bfd_mips_elf_eh_frame_address_size
 180 #define elf_backend_merge_symbol_attribute  _bfd_mips_elf_merge_symbol_attribute
 181 #define elf_backend_ignore_undef_symbol _bfd_mips_elf_ignore_undef_symbol
 182 #define elf_backend_post_process_headers _bfd_mips_post_process_headers