bfd: new BFD target entry point _bfd_set_reloc.
[external/binutils.git] / bfd / elfxx-target.h
1 /* Target definitions for NN-bit ELF
2    Copyright (C) 1993-2017 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
22 /* This structure contains everything that BFD knows about a target.
23    It includes things like its byte order, name, what routines to call
24    to do various operations, etc.  Every BFD points to a target structure
25    with its "xvec" member.
26
27    There are two such structures here:  one for big-endian machines and
28    one for little-endian machines.   */
29
30 #ifndef bfd_elfNN_close_and_cleanup
31 #define bfd_elfNN_close_and_cleanup _bfd_elf_close_and_cleanup
32 #endif
33 #ifndef bfd_elfNN_bfd_free_cached_info
34 #define bfd_elfNN_bfd_free_cached_info _bfd_free_cached_info
35 #endif
36 #ifndef bfd_elfNN_get_section_contents
37 #define bfd_elfNN_get_section_contents _bfd_generic_get_section_contents
38 #endif
39
40 #define bfd_elfNN_canonicalize_dynamic_symtab \
41   _bfd_elf_canonicalize_dynamic_symtab
42 #ifndef bfd_elfNN_get_synthetic_symtab
43 #define bfd_elfNN_get_synthetic_symtab \
44   _bfd_elf_get_synthetic_symtab
45 #endif
46 #ifndef bfd_elfNN_canonicalize_reloc
47 #define bfd_elfNN_canonicalize_reloc    _bfd_elf_canonicalize_reloc
48 #endif
49 #ifndef bfd_elfNN_set_reloc
50 #define bfd_elfNN_set_reloc             _bfd_generic_set_reloc
51 #endif
52 #ifndef bfd_elfNN_find_nearest_line
53 #define bfd_elfNN_find_nearest_line     _bfd_elf_find_nearest_line
54 #endif
55 #ifndef bfd_elfNN_find_line
56 #define bfd_elfNN_find_line             _bfd_elf_find_line
57 #endif
58 #ifndef bfd_elfNN_find_inliner_info
59 #define bfd_elfNN_find_inliner_info     _bfd_elf_find_inliner_info
60 #endif
61 #define bfd_elfNN_read_minisymbols      _bfd_elf_read_minisymbols
62 #define bfd_elfNN_minisymbol_to_symbol  _bfd_elf_minisymbol_to_symbol
63 #define bfd_elfNN_get_dynamic_symtab_upper_bound \
64   _bfd_elf_get_dynamic_symtab_upper_bound
65 #define bfd_elfNN_get_lineno            _bfd_elf_get_lineno
66 #ifndef bfd_elfNN_get_reloc_upper_bound
67 #define bfd_elfNN_get_reloc_upper_bound _bfd_elf_get_reloc_upper_bound
68 #endif
69 #ifndef bfd_elfNN_get_symbol_info
70 #define bfd_elfNN_get_symbol_info       _bfd_elf_get_symbol_info
71 #endif
72 #ifndef bfd_elfNN_get_symbol_version_string
73 #define bfd_elfNN_get_symbol_version_string \
74   _bfd_elf_get_symbol_version_string
75 #endif
76 #define bfd_elfNN_canonicalize_symtab   _bfd_elf_canonicalize_symtab
77 #define bfd_elfNN_get_symtab_upper_bound _bfd_elf_get_symtab_upper_bound
78 #define bfd_elfNN_make_empty_symbol     _bfd_elf_make_empty_symbol
79 #ifndef bfd_elfNN_new_section_hook
80 #define bfd_elfNN_new_section_hook      _bfd_elf_new_section_hook
81 #endif
82 #define bfd_elfNN_set_arch_mach         _bfd_elf_set_arch_mach
83 #ifndef bfd_elfNN_set_section_contents
84 #define bfd_elfNN_set_section_contents  _bfd_elf_set_section_contents
85 #endif
86 #define bfd_elfNN_sizeof_headers        _bfd_elf_sizeof_headers
87 #define bfd_elfNN_write_object_contents _bfd_elf_write_object_contents
88 #define bfd_elfNN_write_corefile_contents _bfd_elf_write_corefile_contents
89
90 #define bfd_elfNN_get_section_contents_in_window \
91   _bfd_generic_get_section_contents_in_window
92
93 #ifndef elf_backend_can_refcount
94 #define elf_backend_can_refcount 0
95 #endif
96 #ifndef elf_backend_want_got_plt
97 #define elf_backend_want_got_plt 0
98 #endif
99 #ifndef elf_backend_plt_readonly
100 #define elf_backend_plt_readonly 0
101 #endif
102 #ifndef elf_backend_want_plt_sym
103 #define elf_backend_want_plt_sym 0
104 #endif
105 #ifndef elf_backend_plt_not_loaded
106 #define elf_backend_plt_not_loaded 0
107 #endif
108 #ifndef elf_backend_plt_alignment
109 #define elf_backend_plt_alignment 2
110 #endif
111 #ifndef elf_backend_want_dynbss
112 #define elf_backend_want_dynbss 1
113 #endif
114 #ifndef elf_backend_want_dynrelro
115 #define elf_backend_want_dynrelro 0
116 #endif
117 #ifndef elf_backend_want_p_paddr_set_to_zero
118 #define elf_backend_want_p_paddr_set_to_zero 0
119 #endif
120 #ifndef elf_backend_no_page_alias
121 #define elf_backend_no_page_alias 0
122 #endif
123 #ifndef elf_backend_default_execstack
124 #define elf_backend_default_execstack 1
125 #endif
126 #ifndef elf_backend_caches_rawsize
127 #define elf_backend_caches_rawsize 0
128 #endif
129 #ifndef elf_backend_extern_protected_data
130 #define elf_backend_extern_protected_data 0
131 #endif
132 #ifndef elf_backend_always_renumber_dynsyms
133 #define elf_backend_always_renumber_dynsyms FALSE
134 #endif
135 #ifndef elf_backend_stack_align
136 #define elf_backend_stack_align 16
137 #endif
138 #ifndef elf_backend_strtab_flags
139 #define elf_backend_strtab_flags 0
140 #endif
141
142 #define bfd_elfNN_bfd_debug_info_start  bfd_void
143 #define bfd_elfNN_bfd_debug_info_end    bfd_void
144 #define bfd_elfNN_bfd_debug_info_accumulate \
145   ((void (*) (bfd*, struct bfd_section *)) bfd_void)
146
147 #ifndef bfd_elfNN_bfd_get_relocated_section_contents
148 #define bfd_elfNN_bfd_get_relocated_section_contents \
149   bfd_generic_get_relocated_section_contents
150 #endif
151
152 #ifndef bfd_elfNN_bfd_relax_section
153 #define bfd_elfNN_bfd_relax_section bfd_generic_relax_section
154 #endif
155
156 #ifndef elf_backend_can_gc_sections
157 #define elf_backend_can_gc_sections 0
158 #endif
159 #ifndef elf_backend_can_refcount
160 #define elf_backend_can_refcount 0
161 #endif
162 #ifndef elf_backend_want_got_sym
163 #define elf_backend_want_got_sym 1
164 #endif
165 #ifndef elf_backend_gc_keep
166 #define elf_backend_gc_keep             _bfd_elf_gc_keep
167 #endif
168 #ifndef elf_backend_gc_mark_dynamic_ref
169 #define elf_backend_gc_mark_dynamic_ref bfd_elf_gc_mark_dynamic_ref_symbol
170 #endif
171 #ifndef elf_backend_gc_mark_hook
172 #define elf_backend_gc_mark_hook        _bfd_elf_gc_mark_hook
173 #endif
174 #ifndef elf_backend_gc_mark_extra_sections
175 #define elf_backend_gc_mark_extra_sections _bfd_elf_gc_mark_extra_sections
176 #endif
177 #ifndef elf_backend_gc_sweep_hook
178 #define elf_backend_gc_sweep_hook       NULL
179 #endif
180 #ifndef bfd_elfNN_bfd_gc_sections
181 #define bfd_elfNN_bfd_gc_sections bfd_elf_gc_sections
182 #endif
183
184 #ifndef bfd_elfNN_bfd_merge_sections
185 #define bfd_elfNN_bfd_merge_sections \
186   _bfd_elf_merge_sections
187 #endif
188
189 #ifndef bfd_elfNN_bfd_is_group_section
190 #define bfd_elfNN_bfd_is_group_section bfd_elf_is_group_section
191 #endif
192
193 #ifndef bfd_elfNN_bfd_discard_group
194 #define bfd_elfNN_bfd_discard_group bfd_generic_discard_group
195 #endif
196
197 #ifndef bfd_elfNN_section_already_linked
198 #define bfd_elfNN_section_already_linked \
199   _bfd_elf_section_already_linked
200 #endif
201
202 #ifndef bfd_elfNN_bfd_define_common_symbol
203 #define bfd_elfNN_bfd_define_common_symbol bfd_generic_define_common_symbol
204 #endif
205
206 #ifndef bfd_elfNN_bfd_lookup_section_flags
207 #define bfd_elfNN_bfd_lookup_section_flags bfd_elf_lookup_section_flags
208 #endif
209
210 #ifndef bfd_elfNN_bfd_make_debug_symbol
211 #define bfd_elfNN_bfd_make_debug_symbol \
212   ((asymbol * (*) (bfd *, void *, unsigned long)) bfd_nullvoidptr)
213 #endif
214
215 #ifndef bfd_elfNN_bfd_copy_private_symbol_data
216 #define bfd_elfNN_bfd_copy_private_symbol_data \
217   _bfd_elf_copy_private_symbol_data
218 #endif
219
220 #ifndef bfd_elfNN_bfd_copy_private_section_data
221 #define bfd_elfNN_bfd_copy_private_section_data \
222   _bfd_elf_copy_private_section_data
223 #endif
224 #ifndef bfd_elfNN_bfd_copy_private_header_data
225 #define bfd_elfNN_bfd_copy_private_header_data \
226   _bfd_elf_copy_private_header_data
227 #endif
228 #ifndef bfd_elfNN_bfd_copy_private_bfd_data
229 #define bfd_elfNN_bfd_copy_private_bfd_data \
230   _bfd_elf_copy_private_bfd_data
231 #endif
232 #ifndef bfd_elfNN_bfd_print_private_bfd_data
233 #define bfd_elfNN_bfd_print_private_bfd_data \
234   _bfd_elf_print_private_bfd_data
235 #endif
236 #ifndef bfd_elfNN_bfd_merge_private_bfd_data
237 #define bfd_elfNN_bfd_merge_private_bfd_data \
238   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) bfd_true)
239 #endif
240 #ifndef bfd_elfNN_bfd_set_private_flags
241 #define bfd_elfNN_bfd_set_private_flags \
242   ((bfd_boolean (*) (bfd *, flagword)) bfd_true)
243 #endif
244 #ifndef bfd_elfNN_bfd_is_local_label_name
245 #define bfd_elfNN_bfd_is_local_label_name _bfd_elf_is_local_label_name
246 #endif
247 #ifndef bfd_elfNN_bfd_is_target_special_symbol
248 #define bfd_elfNN_bfd_is_target_special_symbol \
249   ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
250 #endif
251
252 #ifndef bfd_elfNN_get_dynamic_reloc_upper_bound
253 #define bfd_elfNN_get_dynamic_reloc_upper_bound \
254   _bfd_elf_get_dynamic_reloc_upper_bound
255 #endif
256 #ifndef bfd_elfNN_canonicalize_dynamic_reloc
257 #define bfd_elfNN_canonicalize_dynamic_reloc \
258   _bfd_elf_canonicalize_dynamic_reloc
259 #endif
260
261 #ifdef elf_backend_relocate_section
262 #ifndef bfd_elfNN_bfd_link_hash_table_create
263 #define bfd_elfNN_bfd_link_hash_table_create _bfd_elf_link_hash_table_create
264 #endif
265 #ifndef bfd_elfNN_bfd_copy_link_hash_symbol_type
266 #define bfd_elfNN_bfd_copy_link_hash_symbol_type \
267   _bfd_elf_copy_link_hash_symbol_type
268 #endif
269 #ifndef bfd_elfNN_bfd_link_add_symbols
270 #define bfd_elfNN_bfd_link_add_symbols  bfd_elf_link_add_symbols
271 #endif
272 #ifndef bfd_elfNN_bfd_final_link
273 #define bfd_elfNN_bfd_final_link        bfd_elf_final_link
274 #endif
275 #else /* ! defined (elf_backend_relocate_section) */
276 /* If no backend relocate_section routine, use the generic linker.
277    Note - this will prevent the port from being able to use some of
278    the other features of the ELF linker, because the generic hash structure
279    does not have the fields needed by the ELF linker.  In particular it
280    means that linking directly to S-records will not work.  */
281 #ifndef bfd_elfNN_bfd_link_hash_table_create
282 #define bfd_elfNN_bfd_link_hash_table_create \
283   _bfd_generic_link_hash_table_create
284 #endif
285 #ifndef bfd_elfNN_bfd_copy_link_hash_symbol_type
286 #define bfd_elfNN_bfd_copy_link_hash_symbol_type \
287   _bfd_generic_copy_link_hash_symbol_type
288 #endif
289 #ifndef bfd_elfNN_bfd_link_add_symbols
290 #define bfd_elfNN_bfd_link_add_symbols  _bfd_generic_link_add_symbols
291 #endif
292 #ifndef bfd_elfNN_bfd_final_link
293 #define bfd_elfNN_bfd_final_link        _bfd_generic_final_link
294 #endif
295 #endif /* ! defined (elf_backend_relocate_section) */
296
297 #ifndef bfd_elfNN_bfd_link_just_syms
298 #define bfd_elfNN_bfd_link_just_syms    _bfd_elf_link_just_syms
299 #endif
300
301 #ifndef bfd_elfNN_bfd_link_split_section
302 #define bfd_elfNN_bfd_link_split_section _bfd_generic_link_split_section
303 #endif
304
305 #ifndef bfd_elfNN_bfd_link_check_relocs
306 #define bfd_elfNN_bfd_link_check_relocs  _bfd_elf_link_check_relocs
307 #endif
308
309 #ifndef bfd_elfNN_archive_p
310 #define bfd_elfNN_archive_p bfd_generic_archive_p
311 #endif
312
313 #ifndef bfd_elfNN_write_archive_contents
314 #define bfd_elfNN_write_archive_contents _bfd_write_archive_contents
315 #endif
316
317 #ifndef bfd_elfNN_mkobject
318 #define bfd_elfNN_mkobject bfd_elf_make_object
319 #endif
320
321 #ifndef bfd_elfNN_mkcorefile
322 #define bfd_elfNN_mkcorefile bfd_elf_mkcorefile
323 #endif
324
325 #ifndef bfd_elfNN_mkarchive
326 #define bfd_elfNN_mkarchive _bfd_generic_mkarchive
327 #endif
328
329 #ifndef bfd_elfNN_print_symbol
330 #define bfd_elfNN_print_symbol bfd_elf_print_symbol
331 #endif
332
333 #ifndef elf_symbol_leading_char
334 #define elf_symbol_leading_char 0
335 #endif
336
337 #ifndef elf_info_to_howto
338 #define elf_info_to_howto 0
339 #endif
340
341 #ifndef elf_info_to_howto_rel
342 #define elf_info_to_howto_rel 0
343 #endif
344
345 #ifndef elf_backend_arch_data
346 #define elf_backend_arch_data NULL
347 #endif
348
349 #ifndef ELF_TARGET_ID
350 #define ELF_TARGET_ID   GENERIC_ELF_DATA
351 #endif
352
353 #ifndef ELF_OSABI
354 #define ELF_OSABI ELFOSABI_NONE
355 #endif
356
357 #ifndef ELF_MAXPAGESIZE
358 # error ELF_MAXPAGESIZE is not defined
359 #define ELF_MAXPAGESIZE 1
360 #endif
361
362 #ifndef ELF_COMMONPAGESIZE
363 #define ELF_COMMONPAGESIZE ELF_MAXPAGESIZE
364 #endif
365
366 #ifndef ELF_MINPAGESIZE
367 #define ELF_MINPAGESIZE ELF_COMMONPAGESIZE
368 #endif
369
370 #if ELF_COMMONPAGESIZE > ELF_MAXPAGESIZE
371 # error ELF_COMMONPAGESIZE > ELF_MAXPAGESIZE
372 #endif
373 #if ELF_MINPAGESIZE > ELF_COMMONPAGESIZE
374 # error ELF_MINPAGESIZE > ELF_COMMONPAGESIZE
375 #endif
376
377 #ifndef ELF_DYNAMIC_SEC_FLAGS
378 /* Note that we set the SEC_IN_MEMORY flag for these sections.  */
379 #define ELF_DYNAMIC_SEC_FLAGS                   \
380   (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS      \
381    | SEC_IN_MEMORY | SEC_LINKER_CREATED)
382 #endif
383
384 #ifndef elf_backend_collect
385 #define elf_backend_collect FALSE
386 #endif
387 #ifndef elf_backend_type_change_ok
388 #define elf_backend_type_change_ok FALSE
389 #endif
390
391 #ifndef elf_backend_sym_is_global
392 #define elf_backend_sym_is_global       0
393 #endif
394 #ifndef elf_backend_object_p
395 #define elf_backend_object_p            0
396 #endif
397 #ifndef elf_backend_symbol_processing
398 #define elf_backend_symbol_processing   0
399 #endif
400 #ifndef elf_backend_symbol_table_processing
401 #define elf_backend_symbol_table_processing     0
402 #endif
403 #ifndef elf_backend_get_symbol_type
404 #define elf_backend_get_symbol_type 0
405 #endif
406 #ifndef elf_backend_archive_symbol_lookup
407 #define elf_backend_archive_symbol_lookup _bfd_elf_archive_symbol_lookup
408 #endif
409 #ifndef elf_backend_name_local_section_symbols
410 #define elf_backend_name_local_section_symbols  0
411 #endif
412 #ifndef elf_backend_section_processing
413 #define elf_backend_section_processing  0
414 #endif
415 #ifndef elf_backend_section_from_shdr
416 #define elf_backend_section_from_shdr   _bfd_elf_make_section_from_shdr
417 #endif
418 #ifndef elf_backend_section_flags
419 #define elf_backend_section_flags       0
420 #endif
421 #ifndef elf_backend_get_sec_type_attr
422 #define elf_backend_get_sec_type_attr   _bfd_elf_get_sec_type_attr
423 #endif
424 #ifndef elf_backend_section_from_phdr
425 #define elf_backend_section_from_phdr   _bfd_elf_make_section_from_phdr
426 #endif
427 #ifndef elf_backend_fake_sections
428 #define elf_backend_fake_sections       0
429 #endif
430 #ifndef elf_backend_section_from_bfd_section
431 #define elf_backend_section_from_bfd_section    0
432 #endif
433 #ifndef elf_backend_add_symbol_hook
434 #define elf_backend_add_symbol_hook     0
435 #endif
436 #ifndef elf_backend_link_output_symbol_hook
437 #define elf_backend_link_output_symbol_hook 0
438 #endif
439 #ifndef elf_backend_create_dynamic_sections
440 #define elf_backend_create_dynamic_sections 0
441 #endif
442 #ifndef elf_backend_omit_section_dynsym
443 #define elf_backend_omit_section_dynsym _bfd_elf_link_omit_section_dynsym
444 #endif
445 #ifndef elf_backend_relocs_compatible
446 #define elf_backend_relocs_compatible _bfd_elf_default_relocs_compatible
447 #endif
448 #ifndef elf_backend_check_relocs
449 #define elf_backend_check_relocs        0
450 #endif
451 #ifndef elf_backend_check_directives
452 #define elf_backend_check_directives    0
453 #endif
454 #ifndef elf_backend_notice_as_needed
455 #define elf_backend_notice_as_needed    _bfd_elf_notice_as_needed
456 #endif
457 #ifndef elf_backend_adjust_dynamic_symbol
458 #define elf_backend_adjust_dynamic_symbol 0
459 #endif
460 #ifndef elf_backend_always_size_sections
461 #define elf_backend_always_size_sections 0
462 #endif
463 #ifndef elf_backend_size_dynamic_sections
464 #define elf_backend_size_dynamic_sections 0
465 #endif
466 #ifndef elf_backend_init_index_section
467 #define elf_backend_init_index_section \
468  ((void (*) (bfd *, struct bfd_link_info *)) bfd_void)
469 #endif
470 #ifndef elf_backend_relocate_section
471 #define elf_backend_relocate_section    0
472 #endif
473 #ifndef elf_backend_finish_dynamic_symbol
474 #define elf_backend_finish_dynamic_symbol       0
475 #endif
476 #ifndef elf_backend_finish_dynamic_sections
477 #define elf_backend_finish_dynamic_sections     0
478 #endif
479 #ifndef elf_backend_begin_write_processing
480 #define elf_backend_begin_write_processing      0
481 #endif
482 #ifndef elf_backend_final_write_processing
483 #define elf_backend_final_write_processing      0
484 #endif
485 #ifndef elf_backend_additional_program_headers
486 #define elf_backend_additional_program_headers  0
487 #endif
488 #ifndef elf_backend_modify_segment_map
489 #define elf_backend_modify_segment_map  0
490 #endif
491 #ifndef elf_backend_modify_program_headers
492 #define elf_backend_modify_program_headers      0
493 #endif
494 #ifndef elf_backend_allow_non_load_phdr
495 #define elf_backend_allow_non_load_phdr \
496   ((bfd_boolean (*) (bfd *, const Elf_Internal_Phdr *, unsigned)) bfd_false)
497 #endif
498 #ifndef elf_backend_ecoff_debug_swap
499 #define elf_backend_ecoff_debug_swap    0
500 #endif
501 #ifndef elf_backend_bfd_from_remote_memory
502 #define elf_backend_bfd_from_remote_memory _bfd_elfNN_bfd_from_remote_memory
503 #endif
504 #ifndef elf_backend_got_header_size
505 #define elf_backend_got_header_size     0
506 #endif
507 #ifndef elf_backend_got_elt_size
508 #define elf_backend_got_elt_size _bfd_elf_default_got_elt_size
509 #endif
510 #ifndef elf_backend_obj_attrs_vendor
511 #define elf_backend_obj_attrs_vendor            NULL
512 #endif
513 #ifndef elf_backend_obj_attrs_section
514 #define elf_backend_obj_attrs_section           NULL
515 #endif
516 #ifndef elf_backend_obj_attrs_arg_type
517 #define elf_backend_obj_attrs_arg_type          NULL
518 #endif
519 #ifndef elf_backend_obj_attrs_section_type
520 #define elf_backend_obj_attrs_section_type              SHT_GNU_ATTRIBUTES
521 #endif
522 #ifndef elf_backend_obj_attrs_order
523 #define elf_backend_obj_attrs_order             NULL
524 #endif
525 #ifndef elf_backend_obj_attrs_handle_unknown
526 #define elf_backend_obj_attrs_handle_unknown    NULL
527 #endif
528 #ifndef elf_backend_parse_gnu_properties
529 #define elf_backend_parse_gnu_properties        NULL
530 #endif
531 #ifndef elf_backend_merge_gnu_properties
532 #define elf_backend_merge_gnu_properties        NULL
533 #endif
534 #ifndef elf_backend_setup_gnu_properties
535 #define elf_backend_setup_gnu_properties        _bfd_elf_link_setup_gnu_properties
536 #endif
537 #ifndef elf_backend_static_tls_alignment
538 #define elf_backend_static_tls_alignment        1
539 #endif
540 #ifndef elf_backend_post_process_headers
541 #define elf_backend_post_process_headers        _bfd_elf_post_process_headers
542 #endif
543 #ifndef elf_backend_print_symbol_all
544 #define elf_backend_print_symbol_all            NULL
545 #endif
546 #ifndef elf_backend_output_arch_local_syms
547 #define elf_backend_output_arch_local_syms      NULL
548 #endif
549 #ifndef elf_backend_output_arch_syms
550 #define elf_backend_output_arch_syms            NULL
551 #endif
552 #ifndef elf_backend_filter_implib_symbols
553 #define elf_backend_filter_implib_symbols       NULL
554 #endif
555 #ifndef elf_backend_copy_indirect_symbol
556 #define elf_backend_copy_indirect_symbol        _bfd_elf_link_hash_copy_indirect
557 #endif
558 #ifndef elf_backend_hide_symbol
559 #define elf_backend_hide_symbol                 _bfd_elf_link_hash_hide_symbol
560 #endif
561 #ifndef elf_backend_fixup_symbol
562 #define elf_backend_fixup_symbol                NULL
563 #endif
564 #ifndef elf_backend_merge_symbol_attribute
565 #define elf_backend_merge_symbol_attribute      NULL
566 #endif
567 #ifndef elf_backend_get_target_dtag
568 #define elf_backend_get_target_dtag             NULL
569 #endif
570 #ifndef elf_backend_ignore_undef_symbol
571 #define elf_backend_ignore_undef_symbol         NULL
572 #endif
573 #ifndef elf_backend_emit_relocs
574 #define elf_backend_emit_relocs                 _bfd_elf_link_output_relocs
575 #endif
576 #ifndef elf_backend_update_relocs
577 #define elf_backend_update_relocs               NULL
578 #endif
579 #ifndef elf_backend_count_relocs
580 #define elf_backend_count_relocs                NULL
581 #endif
582 #ifndef elf_backend_count_additional_relocs
583 #define elf_backend_count_additional_relocs     NULL
584 #endif
585 #ifndef elf_backend_sort_relocs_p
586 #define elf_backend_sort_relocs_p               NULL
587 #endif
588 #ifndef elf_backend_grok_prstatus
589 #define elf_backend_grok_prstatus               NULL
590 #endif
591 #ifndef elf_backend_grok_psinfo
592 #define elf_backend_grok_psinfo                 NULL
593 #endif
594 #ifndef elf_backend_write_core_note
595 #define elf_backend_write_core_note             NULL
596 #endif
597 #ifndef elf_backend_lookup_section_flags_hook
598 #define elf_backend_lookup_section_flags_hook   NULL
599 #endif
600 #ifndef elf_backend_reloc_type_class
601 #define elf_backend_reloc_type_class            _bfd_elf_reloc_type_class
602 #endif
603 #ifndef elf_backend_discard_info
604 #define elf_backend_discard_info                NULL
605 #endif
606 #ifndef elf_backend_ignore_discarded_relocs
607 #define elf_backend_ignore_discarded_relocs     NULL
608 #endif
609 #ifndef elf_backend_action_discarded
610 #define elf_backend_action_discarded _bfd_elf_default_action_discarded
611 #endif
612 #ifndef elf_backend_eh_frame_address_size
613 #define elf_backend_eh_frame_address_size _bfd_elf_eh_frame_address_size
614 #endif
615 #ifndef elf_backend_can_make_relative_eh_frame
616 #define elf_backend_can_make_relative_eh_frame  _bfd_elf_can_make_relative
617 #endif
618 #ifndef elf_backend_can_make_lsda_relative_eh_frame
619 #define elf_backend_can_make_lsda_relative_eh_frame     _bfd_elf_can_make_relative
620 #endif
621 #ifndef elf_backend_encode_eh_address
622 #define elf_backend_encode_eh_address           _bfd_elf_encode_eh_address
623 #endif
624 #ifndef elf_backend_write_section
625 #define elf_backend_write_section               NULL
626 #endif
627 #ifndef elf_backend_mips_irix_compat
628 #define elf_backend_mips_irix_compat            NULL
629 #endif
630 #ifndef elf_backend_mips_rtype_to_howto
631 #define elf_backend_mips_rtype_to_howto         NULL
632 #endif
633
634 /* Previously, backends could only use SHT_REL or SHT_RELA relocation
635    sections, but not both.  They defined USE_REL to indicate SHT_REL
636    sections, and left it undefined to indicated SHT_RELA sections.
637    For backwards compatibility, we still support this usage.  */
638 #ifndef USE_REL
639 #define USE_REL 0
640 #endif
641
642 /* Use these in new code.  */
643 #ifndef elf_backend_may_use_rel_p
644 #define elf_backend_may_use_rel_p USE_REL
645 #endif
646 #ifndef elf_backend_may_use_rela_p
647 #define elf_backend_may_use_rela_p !USE_REL
648 #endif
649 #ifndef elf_backend_default_use_rela_p
650 #define elf_backend_default_use_rela_p !USE_REL
651 #endif
652 #ifndef elf_backend_rela_plts_and_copies_p
653 #define elf_backend_rela_plts_and_copies_p elf_backend_default_use_rela_p
654 #endif
655
656 #ifndef elf_backend_rela_normal
657 #define elf_backend_rela_normal 0
658 #endif
659
660 #ifndef elf_backend_dtrel_excludes_plt
661 #define elf_backend_dtrel_excludes_plt 0
662 #endif
663
664 #ifndef elf_backend_plt_sym_val
665 #define elf_backend_plt_sym_val NULL
666 #endif
667 #ifndef elf_backend_relplt_name
668 #define elf_backend_relplt_name NULL
669 #endif
670
671 #ifndef ELF_MACHINE_ALT1
672 #define ELF_MACHINE_ALT1 0
673 #endif
674
675 #ifndef ELF_MACHINE_ALT2
676 #define ELF_MACHINE_ALT2 0
677 #endif
678
679 #ifndef elf_backend_size_info
680 #define elf_backend_size_info _bfd_elfNN_size_info
681 #endif
682
683 #ifndef elf_backend_special_sections
684 #define elf_backend_special_sections NULL
685 #endif
686
687 #ifndef elf_backend_sign_extend_vma
688 #define elf_backend_sign_extend_vma 0
689 #endif
690
691 #ifndef elf_backend_link_order_error_handler
692 #define elf_backend_link_order_error_handler _bfd_error_handler
693 #endif
694
695 #ifndef elf_backend_common_definition
696 #define elf_backend_common_definition _bfd_elf_common_definition
697 #endif
698
699 #ifndef elf_backend_common_section_index
700 #define elf_backend_common_section_index _bfd_elf_common_section_index
701 #endif
702
703 #ifndef elf_backend_common_section
704 #define elf_backend_common_section _bfd_elf_common_section
705 #endif
706
707 #ifndef elf_backend_merge_symbol
708 #define elf_backend_merge_symbol NULL
709 #endif
710
711 #ifndef elf_backend_hash_symbol
712 #define elf_backend_hash_symbol _bfd_elf_hash_symbol
713 #endif
714
715 #ifndef elf_backend_is_function_type
716 #define elf_backend_is_function_type _bfd_elf_is_function_type
717 #endif
718
719 #ifndef elf_backend_maybe_function_sym
720 #define elf_backend_maybe_function_sym _bfd_elf_maybe_function_sym
721 #endif
722
723 #ifndef elf_backend_get_reloc_section
724 #define elf_backend_get_reloc_section _bfd_elf_plt_get_reloc_section
725 #endif
726
727 #ifndef elf_backend_copy_special_section_fields
728 #define elf_backend_copy_special_section_fields NULL
729 #endif
730
731 #ifndef elf_backend_compact_eh_encoding
732 #define elf_backend_compact_eh_encoding NULL
733 #endif
734
735 #ifndef elf_backend_cant_unwind_opcode
736 #define elf_backend_cant_unwind_opcode 0
737 #endif
738
739 #ifndef elf_match_priority
740 #define elf_match_priority \
741   (ELF_ARCH == bfd_arch_unknown ? 2 : ELF_OSABI == ELFOSABI_NONE ? 1 : 0)
742 #endif
743
744 extern const struct elf_size_info _bfd_elfNN_size_info;
745
746 static struct elf_backend_data elfNN_bed =
747 {
748   ELF_ARCH,                     /* arch */
749   ELF_TARGET_ID,                /* target_id */
750   ELF_MACHINE_CODE,             /* elf_machine_code */
751   ELF_OSABI,                    /* elf_osabi  */
752   ELF_MAXPAGESIZE,              /* maxpagesize */
753   ELF_MINPAGESIZE,              /* minpagesize */
754   ELF_COMMONPAGESIZE,           /* commonpagesize */
755   ELF_DYNAMIC_SEC_FLAGS,        /* dynamic_sec_flags */
756   elf_backend_arch_data,
757   elf_info_to_howto,
758   elf_info_to_howto_rel,
759   elf_backend_sym_is_global,
760   elf_backend_object_p,
761   elf_backend_symbol_processing,
762   elf_backend_symbol_table_processing,
763   elf_backend_get_symbol_type,
764   elf_backend_archive_symbol_lookup,
765   elf_backend_name_local_section_symbols,
766   elf_backend_section_processing,
767   elf_backend_section_from_shdr,
768   elf_backend_section_flags,
769   elf_backend_get_sec_type_attr,
770   elf_backend_section_from_phdr,
771   elf_backend_fake_sections,
772   elf_backend_section_from_bfd_section,
773   elf_backend_add_symbol_hook,
774   elf_backend_link_output_symbol_hook,
775   elf_backend_create_dynamic_sections,
776   elf_backend_omit_section_dynsym,
777   elf_backend_relocs_compatible,
778   elf_backend_check_relocs,
779   elf_backend_check_directives,
780   elf_backend_notice_as_needed,
781   elf_backend_adjust_dynamic_symbol,
782   elf_backend_always_size_sections,
783   elf_backend_size_dynamic_sections,
784   elf_backend_init_index_section,
785   elf_backend_relocate_section,
786   elf_backend_finish_dynamic_symbol,
787   elf_backend_finish_dynamic_sections,
788   elf_backend_begin_write_processing,
789   elf_backend_final_write_processing,
790   elf_backend_additional_program_headers,
791   elf_backend_modify_segment_map,
792   elf_backend_modify_program_headers,
793   elf_backend_allow_non_load_phdr,
794   elf_backend_gc_keep,
795   elf_backend_gc_mark_dynamic_ref,
796   elf_backend_gc_mark_hook,
797   elf_backend_gc_mark_extra_sections,
798   elf_backend_gc_sweep_hook,
799   elf_backend_post_process_headers,
800   elf_backend_print_symbol_all,
801   elf_backend_output_arch_local_syms,
802   elf_backend_output_arch_syms,
803   elf_backend_filter_implib_symbols,
804   elf_backend_copy_indirect_symbol,
805   elf_backend_hide_symbol,
806   elf_backend_fixup_symbol,
807   elf_backend_merge_symbol_attribute,
808   elf_backend_get_target_dtag,
809   elf_backend_ignore_undef_symbol,
810   elf_backend_emit_relocs,
811   elf_backend_update_relocs,
812   elf_backend_count_relocs,
813   elf_backend_count_additional_relocs,
814   elf_backend_sort_relocs_p,
815   elf_backend_grok_prstatus,
816   elf_backend_grok_psinfo,
817   elf_backend_write_core_note,
818   elf_backend_lookup_section_flags_hook,
819   elf_backend_reloc_type_class,
820   elf_backend_discard_info,
821   elf_backend_ignore_discarded_relocs,
822   elf_backend_action_discarded,
823   elf_backend_eh_frame_address_size,
824   elf_backend_can_make_relative_eh_frame,
825   elf_backend_can_make_lsda_relative_eh_frame,
826   elf_backend_encode_eh_address,
827   elf_backend_write_section,
828   elf_backend_mips_irix_compat,
829   elf_backend_mips_rtype_to_howto,
830   elf_backend_ecoff_debug_swap,
831   elf_backend_bfd_from_remote_memory,
832   elf_backend_plt_sym_val,
833   elf_backend_common_definition,
834   elf_backend_common_section_index,
835   elf_backend_common_section,
836   elf_backend_merge_symbol,
837   elf_backend_hash_symbol,
838   elf_backend_is_function_type,
839   elf_backend_maybe_function_sym,
840   elf_backend_get_reloc_section,
841   elf_backend_copy_special_section_fields,
842   elf_backend_link_order_error_handler,
843   elf_backend_relplt_name,
844   ELF_MACHINE_ALT1,
845   ELF_MACHINE_ALT2,
846   &elf_backend_size_info,
847   elf_backend_special_sections,
848   elf_backend_got_header_size,
849   elf_backend_got_elt_size,
850   elf_backend_obj_attrs_vendor,
851   elf_backend_obj_attrs_section,
852   elf_backend_obj_attrs_arg_type,
853   elf_backend_obj_attrs_section_type,
854   elf_backend_obj_attrs_order,
855   elf_backend_obj_attrs_handle_unknown,
856   elf_backend_parse_gnu_properties,
857   elf_backend_merge_gnu_properties,
858   elf_backend_setup_gnu_properties,
859   elf_backend_compact_eh_encoding,
860   elf_backend_cant_unwind_opcode,
861   elf_backend_static_tls_alignment,
862   elf_backend_stack_align,
863   elf_backend_strtab_flags,
864   elf_backend_collect,
865   elf_backend_type_change_ok,
866   elf_backend_may_use_rel_p,
867   elf_backend_may_use_rela_p,
868   elf_backend_default_use_rela_p,
869   elf_backend_rela_plts_and_copies_p,
870   elf_backend_rela_normal,
871   elf_backend_dtrel_excludes_plt,
872   elf_backend_sign_extend_vma,
873   elf_backend_want_got_plt,
874   elf_backend_plt_readonly,
875   elf_backend_want_plt_sym,
876   elf_backend_plt_not_loaded,
877   elf_backend_plt_alignment,
878   elf_backend_can_gc_sections,
879   elf_backend_can_refcount,
880   elf_backend_want_got_sym,
881   elf_backend_want_dynbss,
882   elf_backend_want_dynrelro,
883   elf_backend_want_p_paddr_set_to_zero,
884   elf_backend_no_page_alias,
885   elf_backend_default_execstack,
886   elf_backend_caches_rawsize,
887   elf_backend_extern_protected_data,
888   elf_backend_always_renumber_dynsyms
889 };
890
891 /* Forward declaration for use when initialising alternative_target field.  */
892 #ifdef TARGET_LITTLE_SYM
893 extern const bfd_target TARGET_LITTLE_SYM;
894 #endif
895
896 #ifdef TARGET_BIG_SYM
897 const bfd_target TARGET_BIG_SYM =
898 {
899   /* name: identify kind of target */
900   TARGET_BIG_NAME,
901
902   /* flavour: general indication about file */
903   bfd_target_elf_flavour,
904
905   /* byteorder: data is big endian */
906   BFD_ENDIAN_BIG,
907
908   /* header_byteorder: header is also big endian */
909   BFD_ENDIAN_BIG,
910
911   /* object_flags: mask of all file flags */
912   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS
913    | DYNAMIC | WP_TEXT | D_PAGED | BFD_COMPRESS | BFD_DECOMPRESS
914    | BFD_COMPRESS_GABI | BFD_CONVERT_ELF_COMMON | BFD_USE_ELF_STT_COMMON),
915
916   /* section_flags: mask of all section flags */
917   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY
918    | SEC_CODE | SEC_DATA | SEC_DEBUGGING | SEC_EXCLUDE | SEC_SORT_ENTRIES
919    | SEC_SMALL_DATA | SEC_MERGE | SEC_STRINGS | SEC_GROUP),
920
921    /* leading_symbol_char: is the first char of a user symbol
922       predictable, and if so what is it */
923   elf_symbol_leading_char,
924
925   /* ar_pad_char: pad character for filenames within an archive header
926      FIXME:  this really has nothing to do with ELF, this is a characteristic
927      of the archiver and/or os and should be independently tunable */
928   '/',
929
930   /* ar_max_namelen: maximum number of characters in an archive header
931      FIXME:  this really has nothing to do with ELF, this is a characteristic
932      of the archiver and should be independently tunable.  The System V ABI,
933      Chapter 7 (Formats & Protocols), Archive section sets this as 15.  */
934   15,
935
936   elf_match_priority,
937
938   /* Routines to byte-swap various sized integers from the data sections */
939   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
940     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
941     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
942
943   /* Routines to byte-swap various sized integers from the file headers */
944   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
945     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
946     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
947
948   /* bfd_check_format: check the format of a file being read */
949   { _bfd_dummy_target,          /* unknown format */
950     bfd_elfNN_object_p,         /* assembler/linker output (object file) */
951     bfd_elfNN_archive_p,        /* an archive */
952     bfd_elfNN_core_file_p       /* a core file */
953   },
954
955   /* bfd_set_format: set the format of a file being written */
956   { bfd_false,
957     bfd_elfNN_mkobject,
958     bfd_elfNN_mkarchive,
959     bfd_elfNN_mkcorefile
960   },
961
962   /* bfd_write_contents: write cached information into a file being written */
963   { bfd_false,
964     bfd_elfNN_write_object_contents,
965     bfd_elfNN_write_archive_contents,
966     bfd_elfNN_write_corefile_contents,
967   },
968
969   BFD_JUMP_TABLE_GENERIC (bfd_elfNN),
970   BFD_JUMP_TABLE_COPY (bfd_elfNN),
971   BFD_JUMP_TABLE_CORE (bfd_elfNN),
972 #ifdef bfd_elfNN_archive_functions
973   BFD_JUMP_TABLE_ARCHIVE (bfd_elfNN_archive),
974 #elif defined USE_64_BIT_ARCHIVE
975   BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_64_bit),
976 #else
977   BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
978 #endif
979   BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN),
980   BFD_JUMP_TABLE_RELOCS (bfd_elfNN),
981   BFD_JUMP_TABLE_WRITE (bfd_elfNN),
982   BFD_JUMP_TABLE_LINK (bfd_elfNN),
983   BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN),
984
985   /* Alternative endian target.  */
986 #ifdef TARGET_LITTLE_SYM
987   & TARGET_LITTLE_SYM,
988 #else
989   NULL,
990 #endif
991
992   /* backend_data: */
993   &elfNN_bed
994 };
995 #endif
996
997 #ifdef TARGET_LITTLE_SYM
998 const bfd_target TARGET_LITTLE_SYM =
999 {
1000   /* name: identify kind of target */
1001   TARGET_LITTLE_NAME,
1002
1003   /* flavour: general indication about file */
1004   bfd_target_elf_flavour,
1005
1006   /* byteorder: data is little endian */
1007   BFD_ENDIAN_LITTLE,
1008
1009   /* header_byteorder: header is also little endian */
1010   BFD_ENDIAN_LITTLE,
1011
1012   /* object_flags: mask of all file flags */
1013   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS
1014    | DYNAMIC | WP_TEXT | D_PAGED | BFD_COMPRESS | BFD_DECOMPRESS
1015    | BFD_COMPRESS_GABI | BFD_CONVERT_ELF_COMMON | BFD_USE_ELF_STT_COMMON),
1016
1017   /* section_flags: mask of all section flags */
1018   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY
1019    | SEC_CODE | SEC_DATA | SEC_DEBUGGING | SEC_EXCLUDE | SEC_SORT_ENTRIES
1020    | SEC_SMALL_DATA | SEC_MERGE | SEC_STRINGS | SEC_GROUP),
1021
1022    /* leading_symbol_char: is the first char of a user symbol
1023       predictable, and if so what is it */
1024   elf_symbol_leading_char,
1025
1026   /* ar_pad_char: pad character for filenames within an archive header
1027      FIXME:  this really has nothing to do with ELF, this is a characteristic
1028      of the archiver and/or os and should be independently tunable */
1029   '/',
1030
1031   /* ar_max_namelen: maximum number of characters in an archive header
1032      FIXME:  this really has nothing to do with ELF, this is a characteristic
1033      of the archiver and should be independently tunable.  The System V ABI,
1034      Chapter 7 (Formats & Protocols), Archive section sets this as 15.  */
1035   15,
1036
1037   elf_match_priority,
1038
1039   /* Routines to byte-swap various sized integers from the data sections */
1040   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
1041     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
1042     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
1043
1044   /* Routines to byte-swap various sized integers from the file headers */
1045   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
1046     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
1047     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
1048
1049   /* bfd_check_format: check the format of a file being read */
1050   { _bfd_dummy_target,          /* unknown format */
1051     bfd_elfNN_object_p,         /* assembler/linker output (object file) */
1052     bfd_elfNN_archive_p,        /* an archive */
1053     bfd_elfNN_core_file_p       /* a core file */
1054   },
1055
1056   /* bfd_set_format: set the format of a file being written */
1057   { bfd_false,
1058     bfd_elfNN_mkobject,
1059     bfd_elfNN_mkarchive,
1060     bfd_elfNN_mkcorefile
1061   },
1062
1063   /* bfd_write_contents: write cached information into a file being written */
1064   { bfd_false,
1065     bfd_elfNN_write_object_contents,
1066     bfd_elfNN_write_archive_contents,
1067     bfd_elfNN_write_corefile_contents,
1068   },
1069
1070   BFD_JUMP_TABLE_GENERIC (bfd_elfNN),
1071   BFD_JUMP_TABLE_COPY (bfd_elfNN),
1072   BFD_JUMP_TABLE_CORE (bfd_elfNN),
1073 #ifdef bfd_elfNN_archive_functions
1074   BFD_JUMP_TABLE_ARCHIVE (bfd_elfNN_archive),
1075 #elif defined USE_64_BIT_ARCHIVE
1076   BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_64_bit),
1077 #else
1078   BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
1079 #endif
1080   BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN),
1081   BFD_JUMP_TABLE_RELOCS (bfd_elfNN),
1082   BFD_JUMP_TABLE_WRITE (bfd_elfNN),
1083   BFD_JUMP_TABLE_LINK (bfd_elfNN),
1084   BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN),
1085
1086   /* Alternative endian target.  */
1087 #ifdef TARGET_BIG_SYM
1088   & TARGET_BIG_SYM,
1089 #else
1090   NULL,
1091 #endif
1092
1093   /* backend_data: */
1094   &elfNN_bed
1095 };
1096 #endif