1 /* Target definitions for NN-bit ELF
2 Copyright 1993, 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
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 2 of the License, or
9 (at your option) any later version.
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.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
20 /* This structure contains everything that BFD knows about a target.
21 It includes things like its byte order, name, what routines to call
22 to do various operations, etc. Every BFD points to a target structure
23 with its "xvec" member.
25 There are two such structures here: one for big-endian machines and
26 one for little-endian machines. */
28 #define bfd_elfNN_close_and_cleanup _bfd_elf_close_and_cleanup
29 #define bfd_elfNN_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
30 #ifndef bfd_elfNN_get_section_contents
31 #define bfd_elfNN_get_section_contents _bfd_generic_get_section_contents
34 #define bfd_elfNN_canonicalize_dynamic_symtab _bfd_elf_canonicalize_dynamic_symtab
35 #define bfd_elfNN_canonicalize_reloc _bfd_elf_canonicalize_reloc
36 #ifndef bfd_elfNN_find_nearest_line
37 #define bfd_elfNN_find_nearest_line _bfd_elf_find_nearest_line
39 #define bfd_elfNN_read_minisymbols _bfd_elf_read_minisymbols
40 #define bfd_elfNN_minisymbol_to_symbol _bfd_elf_minisymbol_to_symbol
41 #define bfd_elfNN_get_dynamic_symtab_upper_bound _bfd_elf_get_dynamic_symtab_upper_bound
42 #define bfd_elfNN_get_lineno _bfd_elf_get_lineno
43 #ifndef bfd_elfNN_get_reloc_upper_bound
44 #define bfd_elfNN_get_reloc_upper_bound _bfd_elf_get_reloc_upper_bound
46 #define bfd_elfNN_get_symbol_info _bfd_elf_get_symbol_info
47 #define bfd_elfNN_get_symtab _bfd_elf_get_symtab
48 #define bfd_elfNN_get_symtab_upper_bound _bfd_elf_get_symtab_upper_bound
49 #if 0 /* done in elf-bfd.h */
50 #define bfd_elfNN_link_record_dynamic_symbol _bfd_elf_link_record_dynamic_symbol
52 #define bfd_elfNN_make_empty_symbol _bfd_elf_make_empty_symbol
53 #define bfd_elfNN_new_section_hook _bfd_elf_new_section_hook
54 #define bfd_elfNN_set_arch_mach _bfd_elf_set_arch_mach
55 #ifndef bfd_elfNN_set_section_contents
56 #define bfd_elfNN_set_section_contents _bfd_elf_set_section_contents
58 #define bfd_elfNN_sizeof_headers _bfd_elf_sizeof_headers
59 #define bfd_elfNN_write_object_contents _bfd_elf_write_object_contents
60 #define bfd_elfNN_write_corefile_contents _bfd_elf_write_corefile_contents
62 #define bfd_elfNN_get_section_contents_in_window \
63 _bfd_generic_get_section_contents_in_window
65 #ifndef elf_backend_got_symbol_offset
66 #define elf_backend_got_symbol_offset (bfd_vma) 0
68 #ifndef elf_backend_want_got_plt
69 #define elf_backend_want_got_plt 0
71 #ifndef elf_backend_plt_readonly
72 #define elf_backend_plt_readonly 0
74 #ifndef elf_backend_want_plt_sym
75 #define elf_backend_want_plt_sym 0
77 #ifndef elf_backend_plt_not_loaded
78 #define elf_backend_plt_not_loaded 0
80 #ifndef elf_backend_plt_alignment
81 #define elf_backend_plt_alignment 2
83 #ifndef elf_backend_want_dynbss
84 #define elf_backend_want_dynbss 1
87 #define bfd_elfNN_bfd_debug_info_start bfd_void
88 #define bfd_elfNN_bfd_debug_info_end bfd_void
89 #define bfd_elfNN_bfd_debug_info_accumulate (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
91 #ifndef bfd_elfNN_bfd_get_relocated_section_contents
92 #define bfd_elfNN_bfd_get_relocated_section_contents \
93 bfd_generic_get_relocated_section_contents
96 #ifndef bfd_elfNN_bfd_relax_section
97 #define bfd_elfNN_bfd_relax_section bfd_generic_relax_section
100 #ifndef elf_backend_can_gc_sections
101 #define elf_backend_can_gc_sections 0
103 #ifndef elf_backend_gc_mark_hook
104 #define elf_backend_gc_mark_hook NULL
106 #ifndef elf_backend_gc_sweep_hook
107 #define elf_backend_gc_sweep_hook NULL
109 #ifndef bfd_elfNN_bfd_gc_sections
110 #define bfd_elfNN_bfd_gc_sections _bfd_elfNN_gc_sections
113 #define bfd_elfNN_bfd_make_debug_symbol \
114 ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
116 #ifndef bfd_elfNN_bfd_copy_private_symbol_data
117 #define bfd_elfNN_bfd_copy_private_symbol_data \
118 _bfd_elf_copy_private_symbol_data
121 #ifndef bfd_elfNN_bfd_copy_private_section_data
122 #define bfd_elfNN_bfd_copy_private_section_data \
123 _bfd_elf_copy_private_section_data
125 #ifndef bfd_elfNN_bfd_copy_private_bfd_data
126 #define bfd_elfNN_bfd_copy_private_bfd_data \
127 ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
129 #ifndef bfd_elfNN_bfd_print_private_bfd_data
130 #define bfd_elfNN_bfd_print_private_bfd_data \
131 _bfd_elf_print_private_bfd_data
133 #ifndef bfd_elfNN_bfd_merge_private_bfd_data
134 #define bfd_elfNN_bfd_merge_private_bfd_data \
135 ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
137 #ifndef bfd_elfNN_bfd_set_private_flags
138 #define bfd_elfNN_bfd_set_private_flags \
139 ((boolean (*) PARAMS ((bfd *, flagword))) bfd_true)
141 #ifndef bfd_elfNN_bfd_is_local_label_name
142 #define bfd_elfNN_bfd_is_local_label_name _bfd_elf_is_local_label_name
145 #ifndef bfd_elfNN_get_dynamic_reloc_upper_bound
146 #define bfd_elfNN_get_dynamic_reloc_upper_bound \
147 _bfd_elf_get_dynamic_reloc_upper_bound
149 #ifndef bfd_elfNN_canonicalize_dynamic_reloc
150 #define bfd_elfNN_canonicalize_dynamic_reloc \
151 _bfd_elf_canonicalize_dynamic_reloc
154 #ifdef elf_backend_relocate_section
155 #ifndef bfd_elfNN_bfd_link_hash_table_create
156 #define bfd_elfNN_bfd_link_hash_table_create _bfd_elf_link_hash_table_create
158 #else /* ! defined (elf_backend_relocate_section) */
159 /* If no backend relocate_section routine, use the generic linker. */
160 #ifndef bfd_elfNN_bfd_link_hash_table_create
161 #define bfd_elfNN_bfd_link_hash_table_create \
162 _bfd_generic_link_hash_table_create
164 #ifndef bfd_elfNN_bfd_link_add_symbols
165 #define bfd_elfNN_bfd_link_add_symbols _bfd_generic_link_add_symbols
167 #ifndef bfd_elfNN_bfd_final_link
168 #define bfd_elfNN_bfd_final_link _bfd_generic_final_link
170 #endif /* ! defined (elf_backend_relocate_section) */
171 #ifndef bfd_elfNN_bfd_link_split_section
172 #define bfd_elfNN_bfd_link_split_section _bfd_generic_link_split_section
175 #ifndef bfd_elfNN_archive_p
176 #define bfd_elfNN_archive_p bfd_generic_archive_p
179 #ifndef bfd_elfNN_write_archive_contents
180 #define bfd_elfNN_write_archive_contents _bfd_write_archive_contents
183 #ifndef bfd_elfNN_mkobject
184 #define bfd_elfNN_mkobject bfd_elf_mkobject
187 #ifndef bfd_elfNN_mkcorefile
188 #define bfd_elfNN_mkcorefile bfd_elf_mkcorefile
191 #ifndef bfd_elfNN_mkarchive
192 #define bfd_elfNN_mkarchive _bfd_generic_mkarchive
195 #ifndef elf_symbol_leading_char
196 #define elf_symbol_leading_char 0
199 #ifndef elf_info_to_howto
200 #define elf_info_to_howto 0
203 #ifndef elf_info_to_howto_rel
204 #define elf_info_to_howto_rel 0
207 #ifndef ELF_MAXPAGESIZE
208 #error ELF_MAXPAGESIZE is not defined
209 #define ELF_MAXPAGESIZE 1
212 #ifndef elf_backend_collect
213 #define elf_backend_collect false
215 #ifndef elf_backend_type_change_ok
216 #define elf_backend_type_change_ok false
219 #ifndef elf_backend_sym_is_global
220 #define elf_backend_sym_is_global 0
222 #ifndef elf_backend_object_p
223 #define elf_backend_object_p 0
225 #ifndef elf_backend_symbol_processing
226 #define elf_backend_symbol_processing 0
228 #ifndef elf_backend_symbol_table_processing
229 #define elf_backend_symbol_table_processing 0
231 #ifndef elf_backend_get_symbol_type
232 #define elf_backend_get_symbol_type 0
234 #ifndef elf_backend_section_processing
235 #define elf_backend_section_processing 0
237 #ifndef elf_backend_section_from_shdr
238 #define elf_backend_section_from_shdr 0
240 #ifndef elf_backend_section_from_phdr
241 #define elf_backend_section_from_phdr 0
243 #ifndef elf_backend_fake_sections
244 #define elf_backend_fake_sections 0
246 #ifndef elf_backend_section_from_bfd_section
247 #define elf_backend_section_from_bfd_section 0
249 #ifndef elf_backend_add_symbol_hook
250 #define elf_backend_add_symbol_hook 0
252 #ifndef elf_backend_link_output_symbol_hook
253 #define elf_backend_link_output_symbol_hook 0
255 #ifndef elf_backend_create_dynamic_sections
256 #define elf_backend_create_dynamic_sections 0
258 #ifndef elf_backend_check_relocs
259 #define elf_backend_check_relocs 0
261 #ifndef elf_backend_adjust_dynamic_symbol
262 #define elf_backend_adjust_dynamic_symbol 0
264 #ifndef elf_backend_always_size_sections
265 #define elf_backend_always_size_sections 0
267 #ifndef elf_backend_size_dynamic_sections
268 #define elf_backend_size_dynamic_sections 0
270 #ifndef elf_backend_relocate_section
271 #define elf_backend_relocate_section 0
273 #ifndef elf_backend_finish_dynamic_symbol
274 #define elf_backend_finish_dynamic_symbol 0
276 #ifndef elf_backend_finish_dynamic_sections
277 #define elf_backend_finish_dynamic_sections 0
279 #ifndef elf_backend_begin_write_processing
280 #define elf_backend_begin_write_processing 0
282 #ifndef elf_backend_final_write_processing
283 #define elf_backend_final_write_processing 0
285 #ifndef elf_backend_additional_program_headers
286 #define elf_backend_additional_program_headers 0
288 #ifndef elf_backend_modify_segment_map
289 #define elf_backend_modify_segment_map 0
291 #ifndef elf_backend_ecoff_debug_swap
292 #define elf_backend_ecoff_debug_swap 0
294 #ifndef elf_backend_got_header_size
295 #define elf_backend_got_header_size 0
297 #ifndef elf_backend_plt_header_size
298 #define elf_backend_plt_header_size 0
300 #ifndef elf_backend_post_process_headers
301 #define elf_backend_post_process_headers NULL
303 #ifndef elf_backend_print_symbol_all
304 #define elf_backend_print_symbol_all NULL
306 #ifndef elf_backend_output_arch_syms
307 #define elf_backend_output_arch_syms NULL
309 #ifndef elf_backend_copy_indirect_symbol
310 #define elf_backend_copy_indirect_symbol _bfd_elf_link_hash_copy_indirect
312 #ifndef elf_backend_hide_symbol
313 #define elf_backend_hide_symbol _bfd_elf_link_hash_hide_symbol
316 /* Previously, backends could only use SHT_REL or SHT_RELA relocation
317 sections, but not both. They defined USE_REL to indicate SHT_REL
318 sections, and left it undefined to indicated SHT_RELA sections.
319 For backwards compatibility, we still support this usage. */
327 /* Use these in new code. */
328 #ifndef elf_backend_may_use_rel_p
329 #define elf_backend_may_use_rel_p USE_REL
331 #ifndef elf_backend_may_use_rela_p
332 #define elf_backend_may_use_rela_p !USE_REL
334 #ifndef elf_backend_default_use_rela_p
335 #define elf_backend_default_use_rela_p !USE_REL
338 #ifndef ELF_MACHINE_ALT1
339 #define ELF_MACHINE_ALT1 0
342 #ifndef ELF_MACHINE_ALT2
343 #define ELF_MACHINE_ALT2 0
346 #ifndef elf_backend_size_info
347 #define elf_backend_size_info _bfd_elfNN_size_info
350 #ifndef elf_backend_sign_extend_vma
351 #define elf_backend_sign_extend_vma 0
354 extern const struct elf_size_info _bfd_elfNN_size_info
;
356 #ifndef INCLUDED_TARGET_FILE
357 static CONST
struct elf_backend_data elfNN_bed
=
360 ELF_MACHINE_CODE
, /* elf_machine_code */
361 ELF_MAXPAGESIZE
, /* maxpagesize */
363 elf_info_to_howto_rel
,
364 elf_backend_sym_is_global
,
365 elf_backend_object_p
,
366 elf_backend_symbol_processing
,
367 elf_backend_symbol_table_processing
,
368 elf_backend_get_symbol_type
,
369 elf_backend_section_processing
,
370 elf_backend_section_from_shdr
,
371 elf_backend_section_from_phdr
,
372 elf_backend_fake_sections
,
373 elf_backend_section_from_bfd_section
,
374 elf_backend_add_symbol_hook
,
375 elf_backend_link_output_symbol_hook
,
376 elf_backend_create_dynamic_sections
,
377 elf_backend_check_relocs
,
378 elf_backend_adjust_dynamic_symbol
,
379 elf_backend_always_size_sections
,
380 elf_backend_size_dynamic_sections
,
381 elf_backend_relocate_section
,
382 elf_backend_finish_dynamic_symbol
,
383 elf_backend_finish_dynamic_sections
,
384 elf_backend_begin_write_processing
,
385 elf_backend_final_write_processing
,
386 elf_backend_additional_program_headers
,
387 elf_backend_modify_segment_map
,
388 elf_backend_gc_mark_hook
,
389 elf_backend_gc_sweep_hook
,
390 elf_backend_post_process_headers
,
391 elf_backend_print_symbol_all
,
392 elf_backend_output_arch_syms
,
393 elf_backend_copy_indirect_symbol
,
394 elf_backend_hide_symbol
,
395 elf_backend_ecoff_debug_swap
,
398 &elf_backend_size_info
,
399 elf_backend_got_symbol_offset
,
400 elf_backend_got_header_size
,
401 elf_backend_plt_header_size
,
403 elf_backend_type_change_ok
,
404 elf_backend_may_use_rel_p
,
405 elf_backend_may_use_rela_p
,
406 elf_backend_default_use_rela_p
,
407 elf_backend_sign_extend_vma
,
408 elf_backend_want_got_plt
,
409 elf_backend_plt_readonly
,
410 elf_backend_want_plt_sym
,
411 elf_backend_plt_not_loaded
,
412 elf_backend_plt_alignment
,
413 elf_backend_can_gc_sections
,
414 elf_backend_want_dynbss
418 /* Forward declaration for use when initialising alternative_target field. */
419 #ifdef TARGET_LITTLE_SYM
420 extern const bfd_target TARGET_LITTLE_SYM
;
423 #ifdef TARGET_BIG_SYM
424 const bfd_target TARGET_BIG_SYM
=
426 /* name: identify kind of target */
429 /* flavour: general indication about file */
430 bfd_target_elf_flavour
,
432 /* byteorder: data is big endian */
435 /* header_byteorder: header is also big endian */
438 /* object_flags: mask of all file flags */
439 (HAS_RELOC
| EXEC_P
| HAS_LINENO
| HAS_DEBUG
| HAS_SYMS
| HAS_LOCALS
|
440 DYNAMIC
| WP_TEXT
| D_PAGED
),
442 /* section_flags: mask of all section flags */
443 (SEC_HAS_CONTENTS
| SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_READONLY
|
444 SEC_CODE
| SEC_DATA
| SEC_DEBUGGING
| SEC_EXCLUDE
| SEC_SORT_ENTRIES
),
446 /* leading_symbol_char: is the first char of a user symbol
447 predictable, and if so what is it */
448 elf_symbol_leading_char
,
450 /* ar_pad_char: pad character for filenames within an archive header
451 FIXME: this really has nothing to do with ELF, this is a characteristic
452 of the archiver and/or os and should be independently tunable */
455 /* ar_max_namelen: maximum number of characters in an archive header
456 FIXME: this really has nothing to do with ELF, this is a characteristic
457 of the archiver and should be independently tunable. This value is
458 a WAG (wild a** guess) */
461 /* Routines to byte-swap various sized integers from the data sections */
462 bfd_getb64
, bfd_getb_signed_64
, bfd_putb64
,
463 bfd_getb32
, bfd_getb_signed_32
, bfd_putb32
,
464 bfd_getb16
, bfd_getb_signed_16
, bfd_putb16
,
466 /* Routines to byte-swap various sized integers from the file headers */
467 bfd_getb64
, bfd_getb_signed_64
, bfd_putb64
,
468 bfd_getb32
, bfd_getb_signed_32
, bfd_putb32
,
469 bfd_getb16
, bfd_getb_signed_16
, bfd_putb16
,
471 /* bfd_check_format: check the format of a file being read */
472 { _bfd_dummy_target
, /* unknown format */
473 bfd_elfNN_object_p
, /* assembler/linker output (object file) */
474 bfd_elfNN_archive_p
, /* an archive */
475 bfd_elfNN_core_file_p
/* a core file */
478 /* bfd_set_format: set the format of a file being written */
485 /* bfd_write_contents: write cached information into a file being written */
487 bfd_elfNN_write_object_contents
,
488 bfd_elfNN_write_archive_contents
,
489 bfd_elfNN_write_corefile_contents
,
492 BFD_JUMP_TABLE_GENERIC (bfd_elfNN
),
493 BFD_JUMP_TABLE_COPY (bfd_elfNN
),
494 BFD_JUMP_TABLE_CORE (bfd_elfNN
),
495 #ifdef bfd_elfNN_archive_functions
496 BFD_JUMP_TABLE_ARCHIVE (bfd_elfNN_archive
),
498 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff
),
500 BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN
),
501 BFD_JUMP_TABLE_RELOCS (bfd_elfNN
),
502 BFD_JUMP_TABLE_WRITE (bfd_elfNN
),
503 BFD_JUMP_TABLE_LINK (bfd_elfNN
),
504 BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN
),
506 /* Alternative endian target. */
507 #ifdef TARGET_LITTLE_SYM
518 #ifdef TARGET_LITTLE_SYM
519 const bfd_target TARGET_LITTLE_SYM
=
521 /* name: identify kind of target */
524 /* flavour: general indication about file */
525 bfd_target_elf_flavour
,
527 /* byteorder: data is little endian */
530 /* header_byteorder: header is also little endian */
533 /* object_flags: mask of all file flags */
534 (HAS_RELOC
| EXEC_P
| HAS_LINENO
| HAS_DEBUG
| HAS_SYMS
| HAS_LOCALS
|
535 DYNAMIC
| WP_TEXT
| D_PAGED
),
537 /* section_flags: mask of all section flags */
538 (SEC_HAS_CONTENTS
| SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_READONLY
|
539 SEC_CODE
| SEC_DATA
| SEC_DEBUGGING
| SEC_EXCLUDE
| SEC_SORT_ENTRIES
),
541 /* leading_symbol_char: is the first char of a user symbol
542 predictable, and if so what is it */
543 elf_symbol_leading_char
,
545 /* ar_pad_char: pad character for filenames within an archive header
546 FIXME: this really has nothing to do with ELF, this is a characteristic
547 of the archiver and/or os and should be independently tunable */
550 /* ar_max_namelen: maximum number of characters in an archive header
551 FIXME: this really has nothing to do with ELF, this is a characteristic
552 of the archiver and should be independently tunable. This value is
553 a WAG (wild a** guess) */
556 /* Routines to byte-swap various sized integers from the data sections */
557 bfd_getl64
, bfd_getl_signed_64
, bfd_putl64
,
558 bfd_getl32
, bfd_getl_signed_32
, bfd_putl32
,
559 bfd_getl16
, bfd_getl_signed_16
, bfd_putl16
,
561 /* Routines to byte-swap various sized integers from the file headers */
562 bfd_getl64
, bfd_getl_signed_64
, bfd_putl64
,
563 bfd_getl32
, bfd_getl_signed_32
, bfd_putl32
,
564 bfd_getl16
, bfd_getl_signed_16
, bfd_putl16
,
566 /* bfd_check_format: check the format of a file being read */
567 { _bfd_dummy_target
, /* unknown format */
568 bfd_elfNN_object_p
, /* assembler/linker output (object file) */
569 bfd_elfNN_archive_p
, /* an archive */
570 bfd_elfNN_core_file_p
/* a core file */
573 /* bfd_set_format: set the format of a file being written */
580 /* bfd_write_contents: write cached information into a file being written */
582 bfd_elfNN_write_object_contents
,
583 bfd_elfNN_write_archive_contents
,
584 bfd_elfNN_write_corefile_contents
,
587 BFD_JUMP_TABLE_GENERIC (bfd_elfNN
),
588 BFD_JUMP_TABLE_COPY (bfd_elfNN
),
589 BFD_JUMP_TABLE_CORE (bfd_elfNN
),
590 #ifdef bfd_elfNN_archive_functions
591 BFD_JUMP_TABLE_ARCHIVE (bfd_elfNN_archive
),
593 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff
),
595 BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN
),
596 BFD_JUMP_TABLE_RELOCS (bfd_elfNN
),
597 BFD_JUMP_TABLE_WRITE (bfd_elfNN
),
598 BFD_JUMP_TABLE_LINK (bfd_elfNN
),
599 BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN
),
601 /* Alternative endian target. */
602 #ifdef TARGET_BIG_SYM