* elf-bfd.h (elf_backend_data): Remove use_rela_p. Add
[deliverable/binutils-gdb.git] / bfd / elfxx-target.h
1 /* Target definitions for NN-bit ELF
2 Copyright 1993, 1994, 1995, 1996, 1997 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
19
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.
24
25 There are two such structures here: one for big-endian machines and
26 one for little-endian machines. */
27
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
32 #endif
33
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
38 #endif
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
45 #endif
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
51 #endif
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
57 #endif
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
61
62 #define bfd_elfNN_get_section_contents_in_window \
63 _bfd_generic_get_section_contents_in_window
64
65 #ifndef elf_backend_got_symbol_offset
66 #define elf_backend_got_symbol_offset (bfd_vma) 0
67 #endif
68 #ifndef elf_backend_want_got_plt
69 #define elf_backend_want_got_plt 0
70 #endif
71 #ifndef elf_backend_plt_readonly
72 #define elf_backend_plt_readonly 0
73 #endif
74 #ifndef elf_backend_want_plt_sym
75 #define elf_backend_want_plt_sym 0
76 #endif
77 #ifndef elf_backend_plt_not_loaded
78 #define elf_backend_plt_not_loaded 0
79 #endif
80 #ifndef elf_backend_plt_alignment
81 #define elf_backend_plt_alignment 2
82 #endif
83
84 #define bfd_elfNN_bfd_debug_info_start bfd_void
85 #define bfd_elfNN_bfd_debug_info_end bfd_void
86 #define bfd_elfNN_bfd_debug_info_accumulate (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
87
88 #ifndef bfd_elfNN_bfd_get_relocated_section_contents
89 #define bfd_elfNN_bfd_get_relocated_section_contents \
90 bfd_generic_get_relocated_section_contents
91 #endif
92
93 #ifndef bfd_elfNN_bfd_relax_section
94 #define bfd_elfNN_bfd_relax_section bfd_generic_relax_section
95 #endif
96
97 #ifndef elf_backend_can_gc_sections
98 #define elf_backend_can_gc_sections 0
99 #endif
100 #ifndef elf_backend_gc_mark_hook
101 #define elf_backend_gc_mark_hook NULL
102 #endif
103 #ifndef elf_backend_gc_sweep_hook
104 #define elf_backend_gc_sweep_hook NULL
105 #endif
106 #ifndef bfd_elfNN_bfd_gc_sections
107 #define bfd_elfNN_bfd_gc_sections _bfd_elfNN_gc_sections
108 #endif
109
110 #define bfd_elfNN_bfd_make_debug_symbol \
111 ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
112
113 #ifndef bfd_elfNN_bfd_copy_private_symbol_data
114 #define bfd_elfNN_bfd_copy_private_symbol_data \
115 _bfd_elf_copy_private_symbol_data
116 #endif
117
118 #ifndef bfd_elfNN_bfd_copy_private_section_data
119 #define bfd_elfNN_bfd_copy_private_section_data \
120 _bfd_elf_copy_private_section_data
121 #endif
122 #ifndef bfd_elfNN_bfd_copy_private_bfd_data
123 #define bfd_elfNN_bfd_copy_private_bfd_data \
124 ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
125 #endif
126 #ifndef bfd_elfNN_bfd_print_private_bfd_data
127 #define bfd_elfNN_bfd_print_private_bfd_data \
128 _bfd_elf_print_private_bfd_data
129 #endif
130 #ifndef bfd_elfNN_bfd_merge_private_bfd_data
131 #define bfd_elfNN_bfd_merge_private_bfd_data \
132 ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
133 #endif
134 #ifndef bfd_elfNN_bfd_set_private_flags
135 #define bfd_elfNN_bfd_set_private_flags \
136 ((boolean (*) PARAMS ((bfd *, flagword))) bfd_true)
137 #endif
138 #ifndef bfd_elfNN_bfd_is_local_label_name
139 #define bfd_elfNN_bfd_is_local_label_name _bfd_elf_is_local_label_name
140 #endif
141
142 #ifndef bfd_elfNN_get_dynamic_reloc_upper_bound
143 #define bfd_elfNN_get_dynamic_reloc_upper_bound \
144 _bfd_elf_get_dynamic_reloc_upper_bound
145 #endif
146 #ifndef bfd_elfNN_canonicalize_dynamic_reloc
147 #define bfd_elfNN_canonicalize_dynamic_reloc \
148 _bfd_elf_canonicalize_dynamic_reloc
149 #endif
150
151 #ifdef elf_backend_relocate_section
152 #ifndef bfd_elfNN_bfd_link_hash_table_create
153 #define bfd_elfNN_bfd_link_hash_table_create _bfd_elf_link_hash_table_create
154 #endif
155 #else /* ! defined (elf_backend_relocate_section) */
156 /* If no backend relocate_section routine, use the generic linker. */
157 #ifndef bfd_elfNN_bfd_link_hash_table_create
158 #define bfd_elfNN_bfd_link_hash_table_create \
159 _bfd_generic_link_hash_table_create
160 #endif
161 #ifndef bfd_elfNN_bfd_link_add_symbols
162 #define bfd_elfNN_bfd_link_add_symbols _bfd_generic_link_add_symbols
163 #endif
164 #ifndef bfd_elfNN_bfd_final_link
165 #define bfd_elfNN_bfd_final_link _bfd_generic_final_link
166 #endif
167 #endif /* ! defined (elf_backend_relocate_section) */
168 #ifndef bfd_elfNN_bfd_link_split_section
169 #define bfd_elfNN_bfd_link_split_section _bfd_generic_link_split_section
170 #endif
171
172 #ifndef bfd_elfNN_archive_p
173 #define bfd_elfNN_archive_p bfd_generic_archive_p
174 #endif
175
176 #ifndef bfd_elfNN_write_archive_contents
177 #define bfd_elfNN_write_archive_contents _bfd_write_archive_contents
178 #endif
179
180 #ifndef bfd_elfNN_mkobject
181 #define bfd_elfNN_mkobject bfd_elf_mkobject
182 #endif
183
184 #ifndef bfd_elfNN_mkcorefile
185 #define bfd_elfNN_mkcorefile bfd_elf_mkcorefile
186 #endif
187
188 #ifndef bfd_elfNN_mkarchive
189 #define bfd_elfNN_mkarchive _bfd_generic_mkarchive
190 #endif
191
192 #ifndef elf_symbol_leading_char
193 #define elf_symbol_leading_char 0
194 #endif
195
196 #ifndef elf_info_to_howto
197 #define elf_info_to_howto 0
198 #endif
199
200 #ifndef elf_info_to_howto_rel
201 #define elf_info_to_howto_rel 0
202 #endif
203
204 #ifndef ELF_MAXPAGESIZE
205 #define ELF_MAXPAGESIZE 1
206 #endif
207
208 #ifndef elf_backend_collect
209 #define elf_backend_collect false
210 #endif
211 #ifndef elf_backend_type_change_ok
212 #define elf_backend_type_change_ok false
213 #endif
214
215 #ifndef elf_backend_sym_is_global
216 #define elf_backend_sym_is_global 0
217 #endif
218 #ifndef elf_backend_object_p
219 #define elf_backend_object_p 0
220 #endif
221 #ifndef elf_backend_symbol_processing
222 #define elf_backend_symbol_processing 0
223 #endif
224 #ifndef elf_backend_symbol_table_processing
225 #define elf_backend_symbol_table_processing 0
226 #endif
227 #ifndef elf_backend_get_symbol_type
228 #define elf_backend_get_symbol_type 0
229 #endif
230 #ifndef elf_backend_section_processing
231 #define elf_backend_section_processing 0
232 #endif
233 #ifndef elf_backend_section_from_shdr
234 #define elf_backend_section_from_shdr 0
235 #endif
236 #ifndef elf_backend_fake_sections
237 #define elf_backend_fake_sections 0
238 #endif
239 #ifndef elf_backend_section_from_bfd_section
240 #define elf_backend_section_from_bfd_section 0
241 #endif
242 #ifndef elf_backend_add_symbol_hook
243 #define elf_backend_add_symbol_hook 0
244 #endif
245 #ifndef elf_backend_link_output_symbol_hook
246 #define elf_backend_link_output_symbol_hook 0
247 #endif
248 #ifndef elf_backend_create_dynamic_sections
249 #define elf_backend_create_dynamic_sections 0
250 #endif
251 #ifndef elf_backend_check_relocs
252 #define elf_backend_check_relocs 0
253 #endif
254 #ifndef elf_backend_adjust_dynamic_symbol
255 #define elf_backend_adjust_dynamic_symbol 0
256 #endif
257 #ifndef elf_backend_always_size_sections
258 #define elf_backend_always_size_sections 0
259 #endif
260 #ifndef elf_backend_size_dynamic_sections
261 #define elf_backend_size_dynamic_sections 0
262 #endif
263 #ifndef elf_backend_relocate_section
264 #define elf_backend_relocate_section 0
265 #endif
266 #ifndef elf_backend_finish_dynamic_symbol
267 #define elf_backend_finish_dynamic_symbol 0
268 #endif
269 #ifndef elf_backend_finish_dynamic_sections
270 #define elf_backend_finish_dynamic_sections 0
271 #endif
272 #ifndef elf_backend_begin_write_processing
273 #define elf_backend_begin_write_processing 0
274 #endif
275 #ifndef elf_backend_final_write_processing
276 #define elf_backend_final_write_processing 0
277 #endif
278 #ifndef elf_backend_additional_program_headers
279 #define elf_backend_additional_program_headers 0
280 #endif
281 #ifndef elf_backend_modify_segment_map
282 #define elf_backend_modify_segment_map 0
283 #endif
284 #ifndef elf_backend_ecoff_debug_swap
285 #define elf_backend_ecoff_debug_swap 0
286 #endif
287 #ifndef elf_backend_got_header_size
288 #define elf_backend_got_header_size 0
289 #endif
290 #ifndef elf_backend_plt_header_size
291 #define elf_backend_plt_header_size 0
292 #endif
293 #ifndef elf_backend_post_process_headers
294 #define elf_backend_post_process_headers NULL
295 #endif
296
297 /* Previously, backends could only use SHT_REL or SHT_RELA relocation
298 sections, but not both. They defined USE_REL to indicate SHT_REL
299 sections, and left it undefined to indicated SHT_RELA sections.
300 For backwards compatibility, we still support this usage. */
301 #ifndef USE_REL
302 #define USE_REL 0
303 #else
304 #undef USE_REL
305 #define USE_REL 1
306 #endif
307
308 /* Use these in new code. */
309 #ifndef elf_backend_may_use_rel_p
310 #define elf_backend_may_use_rel_p USE_REL
311 #endif
312 #ifndef elf_backend_may_use_rela_p
313 #define elf_backend_may_use_rela_p !USE_REL
314 #endif
315 #ifndef elf_backend_default_use_rela_p
316 #define elf_backend_default_use_rela_p !USE_REL
317 #endif
318
319 #ifndef ELF_MACHINE_ALT1
320 #define ELF_MACHINE_ALT1 0
321 #endif
322
323 #ifndef ELF_MACHINE_ALT2
324 #define ELF_MACHINE_ALT2 0
325 #endif
326
327 #ifndef elf_backend_size_info
328 #define elf_backend_size_info _bfd_elfNN_size_info
329 #endif
330
331 extern const struct elf_size_info _bfd_elfNN_size_info;
332
333 static CONST struct elf_backend_data elfNN_bed =
334 {
335 ELF_ARCH, /* arch */
336 ELF_MACHINE_CODE, /* elf_machine_code */
337 ELF_MAXPAGESIZE, /* maxpagesize */
338 elf_backend_collect,
339 elf_backend_type_change_ok,
340 elf_info_to_howto,
341 elf_info_to_howto_rel,
342 elf_backend_sym_is_global,
343 elf_backend_object_p,
344 elf_backend_symbol_processing,
345 elf_backend_symbol_table_processing,
346 elf_backend_get_symbol_type,
347 elf_backend_section_processing,
348 elf_backend_section_from_shdr,
349 elf_backend_fake_sections,
350 elf_backend_section_from_bfd_section,
351 elf_backend_add_symbol_hook,
352 elf_backend_link_output_symbol_hook,
353 elf_backend_create_dynamic_sections,
354 elf_backend_check_relocs,
355 elf_backend_adjust_dynamic_symbol,
356 elf_backend_always_size_sections,
357 elf_backend_size_dynamic_sections,
358 elf_backend_relocate_section,
359 elf_backend_finish_dynamic_symbol,
360 elf_backend_finish_dynamic_sections,
361 elf_backend_begin_write_processing,
362 elf_backend_final_write_processing,
363 elf_backend_additional_program_headers,
364 elf_backend_modify_segment_map,
365 elf_backend_gc_mark_hook,
366 elf_backend_gc_sweep_hook,
367 elf_backend_post_process_headers,
368 elf_backend_ecoff_debug_swap,
369 ELF_MACHINE_ALT1,
370 ELF_MACHINE_ALT2,
371 &elf_backend_size_info,
372 elf_backend_got_symbol_offset,
373 elf_backend_got_header_size,
374 elf_backend_plt_header_size,
375 elf_backend_may_use_rel_p,
376 elf_backend_may_use_rela_p,
377 elf_backend_default_use_rela_p,
378 elf_backend_want_got_plt,
379 elf_backend_plt_readonly,
380 elf_backend_want_plt_sym,
381 elf_backend_plt_not_loaded,
382 elf_backend_plt_alignment,
383 elf_backend_can_gc_sections
384 };
385
386 #ifdef TARGET_BIG_SYM
387 const bfd_target TARGET_BIG_SYM =
388 {
389 /* name: identify kind of target */
390 TARGET_BIG_NAME,
391
392 /* flavour: general indication about file */
393 bfd_target_elf_flavour,
394
395 /* byteorder: data is big endian */
396 BFD_ENDIAN_BIG,
397
398 /* header_byteorder: header is also big endian */
399 BFD_ENDIAN_BIG,
400
401 /* object_flags: mask of all file flags */
402 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
403 DYNAMIC | WP_TEXT | D_PAGED),
404
405 /* section_flags: mask of all section flags */
406 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
407 SEC_CODE | SEC_DATA | SEC_DEBUGGING | SEC_EXCLUDE | SEC_SORT_ENTRIES),
408
409 /* leading_symbol_char: is the first char of a user symbol
410 predictable, and if so what is it */
411 elf_symbol_leading_char,
412
413 /* ar_pad_char: pad character for filenames within an archive header
414 FIXME: this really has nothing to do with ELF, this is a characteristic
415 of the archiver and/or os and should be independently tunable */
416 '/',
417
418 /* ar_max_namelen: maximum number of characters in an archive header
419 FIXME: this really has nothing to do with ELF, this is a characteristic
420 of the archiver and should be independently tunable. This value is
421 a WAG (wild a** guess) */
422 14,
423
424 /* Routines to byte-swap various sized integers from the data sections */
425 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
426 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
427 bfd_getb16, bfd_getb_signed_16, bfd_putb16,
428
429 /* Routines to byte-swap various sized integers from the file headers */
430 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
431 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
432 bfd_getb16, bfd_getb_signed_16, bfd_putb16,
433
434 /* bfd_check_format: check the format of a file being read */
435 { _bfd_dummy_target, /* unknown format */
436 bfd_elfNN_object_p, /* assembler/linker output (object file) */
437 bfd_elfNN_archive_p, /* an archive */
438 bfd_elfNN_core_file_p /* a core file */
439 },
440
441 /* bfd_set_format: set the format of a file being written */
442 { bfd_false,
443 bfd_elfNN_mkobject,
444 bfd_elfNN_mkarchive,
445 bfd_elfNN_mkcorefile
446 },
447
448 /* bfd_write_contents: write cached information into a file being written */
449 { bfd_false,
450 bfd_elfNN_write_object_contents,
451 bfd_elfNN_write_archive_contents,
452 bfd_elfNN_write_corefile_contents,
453 },
454
455 BFD_JUMP_TABLE_GENERIC (bfd_elfNN),
456 BFD_JUMP_TABLE_COPY (bfd_elfNN),
457 BFD_JUMP_TABLE_CORE (bfd_elfNN),
458 #ifdef bfd_elfNN_archive_functions
459 BFD_JUMP_TABLE_ARCHIVE (bfd_elfNN_archive),
460 #else
461 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
462 #endif
463 BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN),
464 BFD_JUMP_TABLE_RELOCS (bfd_elfNN),
465 BFD_JUMP_TABLE_WRITE (bfd_elfNN),
466 BFD_JUMP_TABLE_LINK (bfd_elfNN),
467 BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN),
468
469 /* backend_data: */
470 (PTR) &elfNN_bed,
471 };
472 #endif
473
474 #ifdef TARGET_LITTLE_SYM
475 const bfd_target TARGET_LITTLE_SYM =
476 {
477 /* name: identify kind of target */
478 TARGET_LITTLE_NAME,
479
480 /* flavour: general indication about file */
481 bfd_target_elf_flavour,
482
483 /* byteorder: data is little endian */
484 BFD_ENDIAN_LITTLE,
485
486 /* header_byteorder: header is also little endian */
487 BFD_ENDIAN_LITTLE,
488
489 /* object_flags: mask of all file flags */
490 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
491 DYNAMIC | WP_TEXT | D_PAGED),
492
493 /* section_flags: mask of all section flags */
494 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
495 SEC_CODE | SEC_DATA | SEC_DEBUGGING | SEC_EXCLUDE | SEC_SORT_ENTRIES),
496
497 /* leading_symbol_char: is the first char of a user symbol
498 predictable, and if so what is it */
499 elf_symbol_leading_char,
500
501 /* ar_pad_char: pad character for filenames within an archive header
502 FIXME: this really has nothing to do with ELF, this is a characteristic
503 of the archiver and/or os and should be independently tunable */
504 '/',
505
506 /* ar_max_namelen: maximum number of characters in an archive header
507 FIXME: this really has nothing to do with ELF, this is a characteristic
508 of the archiver and should be independently tunable. This value is
509 a WAG (wild a** guess) */
510 14,
511
512 /* Routines to byte-swap various sized integers from the data sections */
513 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
514 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
515 bfd_getl16, bfd_getl_signed_16, bfd_putl16,
516
517 /* Routines to byte-swap various sized integers from the file headers */
518 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
519 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
520 bfd_getl16, bfd_getl_signed_16, bfd_putl16,
521
522 /* bfd_check_format: check the format of a file being read */
523 { _bfd_dummy_target, /* unknown format */
524 bfd_elfNN_object_p, /* assembler/linker output (object file) */
525 bfd_elfNN_archive_p, /* an archive */
526 bfd_elfNN_core_file_p /* a core file */
527 },
528
529 /* bfd_set_format: set the format of a file being written */
530 { bfd_false,
531 bfd_elfNN_mkobject,
532 bfd_elfNN_mkarchive,
533 bfd_elfNN_mkcorefile
534 },
535
536 /* bfd_write_contents: write cached information into a file being written */
537 { bfd_false,
538 bfd_elfNN_write_object_contents,
539 bfd_elfNN_write_archive_contents,
540 bfd_elfNN_write_corefile_contents,
541 },
542
543 BFD_JUMP_TABLE_GENERIC (bfd_elfNN),
544 BFD_JUMP_TABLE_COPY (bfd_elfNN),
545 BFD_JUMP_TABLE_CORE (bfd_elfNN),
546 #ifdef bfd_elfNN_archive_functions
547 BFD_JUMP_TABLE_ARCHIVE (bfd_elfNN_archive),
548 #else
549 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
550 #endif
551 BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN),
552 BFD_JUMP_TABLE_RELOCS (bfd_elfNN),
553 BFD_JUMP_TABLE_WRITE (bfd_elfNN),
554 BFD_JUMP_TABLE_LINK (bfd_elfNN),
555 BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN),
556
557 /* backend_data: */
558 (PTR) &elfNN_bed,
559 };
560 #endif
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