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b49e97c9 | 1 | /* MIPS ELF specific backend routines. |
fd67aa11 | 2 | Copyright (C) 2002-2024 Free Software Foundation, Inc. |
b49e97c9 | 3 | |
cd123cb7 | 4 | This file is part of BFD, the Binary File Descriptor library. |
b49e97c9 | 5 | |
cd123cb7 NC |
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. | |
b49e97c9 | 10 | |
cd123cb7 NC |
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. | |
b49e97c9 | 15 | |
cd123cb7 NC |
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. */ | |
b49e97c9 TS |
20 | |
21 | #include "elf/common.h" | |
22 | #include "elf/internal.h" | |
9684f078 | 23 | #include "elf/mips.h" |
b49e97c9 | 24 | |
73425813 AM |
25 | enum reloc_check |
26 | { | |
27 | check_std, | |
28 | check_inplace, | |
29 | check_shuffle | |
30 | }; | |
31 | ||
9171de35 YS |
32 | #ifndef MIPS_DEFAULT_R6 |
33 | #define MIPS_DEFAULT_R6 0 | |
34 | #endif | |
35 | ||
717d4bd6 AM |
36 | struct ecoff_debug_info; |
37 | ||
0a1b45a2 | 38 | extern bool _bfd_mips_elf_mkobject |
6ae68ba3 | 39 | (bfd *); |
ba75d1c5 | 40 | extern bool _bfd_mips_elf_free_cached_info |
c799eddb | 41 | (bfd *); |
0a1b45a2 | 42 | extern bool _bfd_mips_elf_new_section_hook |
9719ad41 | 43 | (bfd *, asection *); |
b49e97c9 | 44 | extern void _bfd_mips_elf_symbol_processing |
9719ad41 | 45 | (bfd *, asymbol *); |
8c946ed5 | 46 | extern unsigned int _bfd_mips_elf_eh_frame_address_size |
76c20d54 | 47 | (bfd *, const asection *); |
0a1b45a2 | 48 | extern bool _bfd_mips_elf_name_local_section_symbols |
174fd7f9 | 49 | (bfd *); |
0a1b45a2 | 50 | extern bool _bfd_mips_elf_section_processing |
9719ad41 | 51 | (bfd *, Elf_Internal_Shdr *); |
0a1b45a2 | 52 | extern bool _bfd_mips_elf_section_from_shdr |
6dc132d9 | 53 | (bfd *, Elf_Internal_Shdr *, const char *, int); |
0a1b45a2 | 54 | extern bool _bfd_mips_elf_fake_sections |
9719ad41 | 55 | (bfd *, Elf_Internal_Shdr *, asection *); |
0a1b45a2 | 56 | extern bool _bfd_mips_elf_section_from_bfd_section |
9719ad41 | 57 | (bfd *, asection *, int *); |
0a1b45a2 | 58 | extern bool _bfd_mips_elf_add_symbol_hook |
555cd476 | 59 | (bfd *, struct bfd_link_info *, Elf_Internal_Sym *, |
9719ad41 | 60 | const char **, flagword *, asection **, bfd_vma *); |
6e0b88f1 | 61 | extern int _bfd_mips_elf_link_output_symbol_hook |
9719ad41 RS |
62 | (struct bfd_link_info *, const char *, Elf_Internal_Sym *, |
63 | asection *, struct elf_link_hash_entry *); | |
0a1b45a2 | 64 | extern bool _bfd_mips_elf_create_dynamic_sections |
9719ad41 | 65 | (bfd *, struct bfd_link_info *); |
0a1b45a2 | 66 | extern bool _bfd_mips_elf_check_relocs |
9719ad41 | 67 | (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *); |
0a1b45a2 | 68 | extern bool _bfd_mips_elf_adjust_dynamic_symbol |
9719ad41 | 69 | (struct bfd_link_info *, struct elf_link_hash_entry *); |
af969b14 | 70 | extern bool _bfd_mips_elf_late_size_sections |
9719ad41 | 71 | (bfd *, struct bfd_link_info *); |
0f684201 | 72 | extern int _bfd_mips_elf_relocate_section |
9719ad41 RS |
73 | (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
74 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **); | |
0a1b45a2 | 75 | extern bool _bfd_mips_elf_finish_dynamic_symbol |
9719ad41 RS |
76 | (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
77 | Elf_Internal_Sym *); | |
0a1b45a2 | 78 | extern bool _bfd_mips_vxworks_finish_dynamic_symbol |
0a44bf69 RS |
79 | (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
80 | Elf_Internal_Sym *); | |
0a1b45a2 | 81 | extern bool _bfd_mips_elf_finish_dynamic_sections |
9719ad41 | 82 | (bfd *, struct bfd_link_info *); |
0a1b45a2 | 83 | extern bool _bfd_mips_elf_sort_relocs_p |
28dbcedc | 84 | (asection *); |
06f44071 | 85 | extern void _bfd_mips_final_write_processing |
cc364be6 | 86 | (bfd *); |
0a1b45a2 | 87 | extern bool _bfd_mips_elf_final_write_processing |
cc364be6 | 88 | (bfd *); |
b49e97c9 | 89 | extern int _bfd_mips_elf_additional_program_headers |
a6b96beb | 90 | (bfd *, struct bfd_link_info *); |
0a1b45a2 | 91 | extern bool _bfd_mips_elf_modify_segment_map |
9719ad41 | 92 | (bfd *, struct bfd_link_info *); |
b49e97c9 | 93 | extern asection * _bfd_mips_elf_gc_mark_hook |
9719ad41 RS |
94 | (asection *, struct bfd_link_info *, Elf_Internal_Rela *, |
95 | struct elf_link_hash_entry *, Elf_Internal_Sym *); | |
b49e97c9 | 96 | extern void _bfd_mips_elf_copy_indirect_symbol |
fcfa13d2 | 97 | (struct bfd_link_info *, struct elf_link_hash_entry *, |
9719ad41 | 98 | struct elf_link_hash_entry *); |
47275900 | 99 | extern void _bfd_mips_elf_hide_symbol |
0a1b45a2 AM |
100 | (struct bfd_link_info *, struct elf_link_hash_entry *, bool); |
101 | extern bool _bfd_mips_elf_ignore_discarded_relocs | |
9719ad41 | 102 | (asection *); |
0a1b45a2 | 103 | extern bool _bfd_mips_elf_is_target_special_symbol |
df58fc94 | 104 | (bfd *abfd, asymbol *sym); |
0a1b45a2 | 105 | extern bool _bfd_mips_elf_find_nearest_line |
fb167eb2 AM |
106 | (bfd *, asymbol **, asection *, bfd_vma, |
107 | const char **, const char **, unsigned int *, unsigned int *); | |
6e7a29c7 AM |
108 | #define _bfd_mips_elf_find_nearest_line_with_alt \ |
109 | _bfd_nosymbols_find_nearest_line_with_alt | |
0a1b45a2 | 110 | extern bool _bfd_mips_elf_find_inliner_info |
4ab527b0 | 111 | (bfd *, const char **, const char **, unsigned int *); |
0a1b45a2 | 112 | extern bool _bfd_mips_elf_set_section_contents |
9719ad41 | 113 | (bfd *, asection *, const void *, file_ptr, bfd_size_type); |
b49e97c9 | 114 | extern bfd_byte *_bfd_elf_mips_get_relocated_section_contents |
9719ad41 | 115 | (bfd *, struct bfd_link_info *, struct bfd_link_order *, |
0a1b45a2 AM |
116 | bfd_byte *, bool, asymbol **); |
117 | extern bool _bfd_mips_elf_relax_section | |
df58fc94 | 118 | (bfd *abfd, asection *sec, struct bfd_link_info *link_info, |
0a1b45a2 | 119 | bool *again); |
b49e97c9 | 120 | extern struct bfd_link_hash_table *_bfd_mips_elf_link_hash_table_create |
9719ad41 | 121 | (bfd *); |
0a44bf69 RS |
122 | extern struct bfd_link_hash_table *_bfd_mips_vxworks_link_hash_table_create |
123 | (bfd *); | |
0a1b45a2 | 124 | extern bool _bfd_mips_elf_final_link |
9719ad41 | 125 | (bfd *, struct bfd_link_info *); |
0a1b45a2 | 126 | extern bool _bfd_mips_elf_merge_private_bfd_data |
50e03d47 | 127 | (bfd *, struct bfd_link_info *); |
0a1b45a2 | 128 | extern bool _bfd_mips_elf_set_private_flags |
9719ad41 | 129 | (bfd *, flagword); |
757a636f RS |
130 | extern const char * _bfd_mips_fp_abi_string |
131 | (int); | |
0a1b45a2 | 132 | extern bool _bfd_mips_elf_print_private_bfd_data |
9719ad41 | 133 | (bfd *, void *); |
0a1b45a2 | 134 | extern bool _bfd_mips_elf_discard_info |
9719ad41 | 135 | (bfd *, struct elf_reloc_cookie *, struct bfd_link_info *); |
0a1b45a2 | 136 | extern bool _bfd_mips_elf_write_section |
c7b8f16e | 137 | (bfd *, struct bfd_link_info *, asection *, bfd_byte *); |
b49e97c9 | 138 | |
0a1b45a2 | 139 | extern bool _bfd_mips_elf_read_ecoff_info |
9719ad41 | 140 | (bfd *, asection *, struct ecoff_debug_info *); |
df58fc94 | 141 | extern void _bfd_mips_elf_reloc_unshuffle |
0a1b45a2 | 142 | (bfd *, int, bool, bfd_byte *); |
df58fc94 | 143 | extern void _bfd_mips_elf_reloc_shuffle |
0a1b45a2 | 144 | (bfd *, int, bool, bfd_byte *); |
73425813 AM |
145 | extern bool _bfd_mips_reloc_offset_in_range |
146 | (bfd *, asection *, arelent *, enum reloc_check); | |
b49e97c9 | 147 | extern bfd_reloc_status_type _bfd_mips_elf_gprel16_with_gp |
0a1b45a2 | 148 | (bfd *, asymbol *, arelent *, asection *, bool, void *, bfd_vma); |
b49e97c9 | 149 | extern bfd_reloc_status_type _bfd_mips_elf32_gprel16_reloc |
9719ad41 | 150 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
30ac9238 RS |
151 | extern bfd_reloc_status_type _bfd_mips_elf_hi16_reloc |
152 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
153 | extern bfd_reloc_status_type _bfd_mips_elf_got16_reloc | |
154 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
155 | extern bfd_reloc_status_type _bfd_mips_elf_lo16_reloc | |
156 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
157 | extern bfd_reloc_status_type _bfd_mips_elf_generic_reloc | |
158 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
b49e97c9 | 159 | extern unsigned long _bfd_elf_mips_mach |
9719ad41 | 160 | (flagword); |
a7ebbfdf | 161 | extern bfd_vma _bfd_mips_elf_sign_extend |
9719ad41 | 162 | (bfd_vma, int); |
5e2b0d47 | 163 | extern void _bfd_mips_elf_merge_symbol_attribute |
0a1b45a2 | 164 | (struct elf_link_hash_entry *, unsigned int, bool, bool); |
ad9563d6 | 165 | extern char *_bfd_mips_elf_get_target_dtag (bfd_vma); |
0a1b45a2 | 166 | extern bool _bfd_mips_elf_ignore_undef_symbol |
12ac1cf5 | 167 | (struct elf_link_hash_entry *); |
861fb55a DJ |
168 | extern void _bfd_mips_elf_use_plts_and_copy_relocs |
169 | (struct bfd_link_info *); | |
8b10b0b3 | 170 | extern void _bfd_mips_elf_linker_flags |
0a1b45a2 | 171 | (struct bfd_link_info *, bool, bool, bool); |
3734320d | 172 | extern void _bfd_mips_elf_compact_branches |
0a1b45a2 AM |
173 | (struct bfd_link_info *, bool); |
174 | extern bool _bfd_mips_elf_init_stubs | |
861fb55a DJ |
175 | (struct bfd_link_info *, |
176 | asection *(*) (const char *, asection *, asection *)); | |
177 | extern bfd_vma _bfd_mips_elf_plt_sym_val | |
178 | (bfd_vma, const asection *, const arelent *rel); | |
1bbce132 MR |
179 | extern long _bfd_mips_elf_get_synthetic_symtab |
180 | (bfd *, long, asymbol **, long, asymbol **, asymbol **); | |
0a1b45a2 | 181 | extern bool _bfd_mips_elf_gc_mark_extra_sections |
351cdf24 | 182 | (struct bfd_link_info *, elf_gc_mark_hook_fn); |
0a1b45a2 | 183 | extern bool _bfd_mips_init_file_header |
861fb55a | 184 | (bfd *abfd, struct bfd_link_info *link_info); |
29ef7005 L |
185 | |
186 | extern const struct bfd_elf_special_section _bfd_mips_elf_special_sections []; | |
2f89ff8d | 187 | |
0a1b45a2 | 188 | extern bool _bfd_mips_elf_common_definition (Elf_Internal_Sym *); |
e0764319 | 189 | |
2f0c68f2 CM |
190 | extern int _bfd_mips_elf_compact_eh_encoding (struct bfd_link_info *); |
191 | extern int _bfd_mips_elf_cant_unwind_opcode (struct bfd_link_info *); | |
192 | ||
f16a9783 MS |
193 | extern void _bfd_mips_elf_record_xhash_symbol |
194 | (struct elf_link_hash_entry *h, bfd_vma xlat_loc); | |
195 | ||
7beeaeb8 AM |
196 | /* MIPS ABI flags data access. For the disassembler. */ |
197 | extern struct elf_internal_abiflags_v0 *bfd_mips_elf_get_abiflags (bfd *); | |
198 | ||
0a1b45a2 | 199 | static inline bool |
9684f078 MR |
200 | gprel16_reloc_p (unsigned int r_type) |
201 | { | |
df58fc94 RS |
202 | return (r_type == R_MIPS_GPREL16 |
203 | || r_type == R_MIPS16_GPREL | |
204 | || r_type == R_MICROMIPS_GPREL16 | |
205 | || r_type == R_MICROMIPS_GPREL7_S2); | |
206 | } | |
207 | ||
0a1b45a2 | 208 | static inline bool |
df58fc94 RS |
209 | literal_reloc_p (int r_type) |
210 | { | |
211 | return r_type == R_MIPS_LITERAL || r_type == R_MICROMIPS_LITERAL; | |
9684f078 MR |
212 | } |
213 | ||
e0764319 | 214 | #define elf_backend_common_definition _bfd_mips_elf_common_definition |
174fd7f9 RS |
215 | #define elf_backend_name_local_section_symbols \ |
216 | _bfd_mips_elf_name_local_section_symbols | |
29ef7005 | 217 | #define elf_backend_special_sections _bfd_mips_elf_special_sections |
8c946ed5 | 218 | #define elf_backend_eh_frame_address_size _bfd_mips_elf_eh_frame_address_size |
5e2b0d47 | 219 | #define elf_backend_merge_symbol_attribute _bfd_mips_elf_merge_symbol_attribute |
12ac1cf5 | 220 | #define elf_backend_ignore_undef_symbol _bfd_mips_elf_ignore_undef_symbol |
ed7e9d0b | 221 | #define elf_backend_init_file_header _bfd_mips_init_file_header |
2f0c68f2 CM |
222 | #define elf_backend_compact_eh_encoding _bfd_mips_elf_compact_eh_encoding |
223 | #define elf_backend_cant_unwind_opcode _bfd_mips_elf_cant_unwind_opcode | |
f16a9783 | 224 | #define elf_backend_record_xhash_symbol _bfd_mips_elf_record_xhash_symbol |
0a1b45a2 | 225 | #define elf_backend_always_renumber_dynsyms true |