1 /* Target definitions for NN-bit ELF 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 3 2003, 2004, 2005, 2006, 2007, 2008, 2009 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 23 /* This structure contains everything that BFD knows about a target. 24 It includes things like its byte order, name, what routines to call 25 to do various operations, etc. Every BFD points to a target structure 26 with its "xvec" member. 27 28 There are two such structures here: one for big-endian machines and 29 one for little-endian machines. */ 30 31 #ifndef bfd_elfNN_close_and_cleanup 32 #define bfd_elfNN_close_and_cleanup _bfd_elf_close_and_cleanup 33 #endif 34 #ifndef bfd_elfNN_bfd_free_cached_info 35 #define bfd_elfNN_bfd_free_cached_info _bfd_free_cached_info 36 #endif 37 #ifndef bfd_elfNN_get_section_contents 38 #define bfd_elfNN_get_section_contents _bfd_generic_get_section_contents 39 #endif 40 41 #define bfd_elfNN_canonicalize_dynamic_symtab \ 42 _bfd_elf_canonicalize_dynamic_symtab 43 #ifndef bfd_elfNN_get_synthetic_symtab 44 #define bfd_elfNN_get_synthetic_symtab \ 45 _bfd_elf_get_synthetic_symtab 46 #endif 47 #ifndef bfd_elfNN_canonicalize_reloc 48 #define bfd_elfNN_canonicalize_reloc _bfd_elf_canonicalize_reloc 49 #endif 50 #ifndef bfd_elfNN_find_nearest_line 51 #define bfd_elfNN_find_nearest_line _bfd_elf_find_nearest_line 52 #endif 53 #ifndef bfd_elfNN_find_inliner_info 54 #define bfd_elfNN_find_inliner_info _bfd_elf_find_inliner_info 55 #endif 56 #define bfd_elfNN_read_minisymbols _bfd_elf_read_minisymbols 57 #define bfd_elfNN_minisymbol_to_symbol _bfd_elf_minisymbol_to_symbol 58 #define bfd_elfNN_get_dynamic_symtab_upper_bound \ 59 _bfd_elf_get_dynamic_symtab_upper_bound 60 #define bfd_elfNN_get_lineno _bfd_elf_get_lineno 61 #ifndef bfd_elfNN_get_reloc_upper_bound 62 #define bfd_elfNN_get_reloc_upper_bound _bfd_elf_get_reloc_upper_bound 63 #endif 64 #ifndef bfd_elfNN_get_symbol_info 65 #define bfd_elfNN_get_symbol_info _bfd_elf_get_symbol_info 66 #endif 67 #define bfd_elfNN_canonicalize_symtab _bfd_elf_canonicalize_symtab 68 #define bfd_elfNN_get_symtab_upper_bound _bfd_elf_get_symtab_upper_bound 69 #define bfd_elfNN_make_empty_symbol _bfd_elf_make_empty_symbol 70 #ifndef bfd_elfNN_new_section_hook 71 #define bfd_elfNN_new_section_hook _bfd_elf_new_section_hook 72 #endif 73 #define bfd_elfNN_set_arch_mach _bfd_elf_set_arch_mach 74 #ifndef bfd_elfNN_set_section_contents 75 #define bfd_elfNN_set_section_contents _bfd_elf_set_section_contents 76 #endif 77 #define bfd_elfNN_sizeof_headers _bfd_elf_sizeof_headers 78 #define bfd_elfNN_write_object_contents _bfd_elf_write_object_contents 79 #define bfd_elfNN_write_corefile_contents _bfd_elf_write_corefile_contents 80 81 #define bfd_elfNN_get_section_contents_in_window \ 82 _bfd_generic_get_section_contents_in_window 83 84 #ifndef elf_backend_can_refcount 85 #define elf_backend_can_refcount 0 86 #endif 87 #ifndef elf_backend_want_got_plt 88 #define elf_backend_want_got_plt 0 89 #endif 90 #ifndef elf_backend_plt_readonly 91 #define elf_backend_plt_readonly 0 92 #endif 93 #ifndef elf_backend_want_plt_sym 94 #define elf_backend_want_plt_sym 0 95 #endif 96 #ifndef elf_backend_plt_not_loaded 97 #define elf_backend_plt_not_loaded 0 98 #endif 99 #ifndef elf_backend_plt_alignment 100 #define elf_backend_plt_alignment 2 101 #endif 102 #ifndef elf_backend_want_dynbss 103 #define elf_backend_want_dynbss 1 104 #endif 105 #ifndef elf_backend_want_p_paddr_set_to_zero 106 #define elf_backend_want_p_paddr_set_to_zero 0 107 #endif 108 #ifndef elf_backend_default_execstack 109 #define elf_backend_default_execstack 1 110 #endif 111 112 #define bfd_elfNN_bfd_debug_info_start bfd_void 113 #define bfd_elfNN_bfd_debug_info_end bfd_void 114 #define bfd_elfNN_bfd_debug_info_accumulate \ 115 ((void (*) (bfd*, struct bfd_section *)) bfd_void) 116 117 #ifndef bfd_elfNN_bfd_get_relocated_section_contents 118 #define bfd_elfNN_bfd_get_relocated_section_contents \ 119 bfd_generic_get_relocated_section_contents 120 #endif 121 122 #ifndef bfd_elfNN_bfd_relax_section 123 #define bfd_elfNN_bfd_relax_section bfd_generic_relax_section 124 #endif 125 126 #ifndef elf_backend_can_gc_sections 127 #define elf_backend_can_gc_sections 0 128 #endif 129 #ifndef elf_backend_can_refcount 130 #define elf_backend_can_refcount 0 131 #endif 132 #ifndef elf_backend_want_got_sym 133 #define elf_backend_want_got_sym 1 134 #endif 135 #ifndef elf_backend_gc_keep 136 #define elf_backend_gc_keep _bfd_elf_gc_keep 137 #endif 138 #ifndef elf_backend_gc_mark_dynamic_ref 139 #define elf_backend_gc_mark_dynamic_ref bfd_elf_gc_mark_dynamic_ref_symbol 140 #endif 141 #ifndef elf_backend_gc_mark_hook 142 #define elf_backend_gc_mark_hook _bfd_elf_gc_mark_hook 143 #endif 144 #ifndef elf_backend_gc_mark_extra_sections 145 #define elf_backend_gc_mark_extra_sections NULL 146 #endif 147 #ifndef elf_backend_gc_sweep_hook 148 #define elf_backend_gc_sweep_hook NULL 149 #endif 150 #ifndef bfd_elfNN_bfd_gc_sections 151 #define bfd_elfNN_bfd_gc_sections bfd_elf_gc_sections 152 #endif 153 154 #ifndef bfd_elfNN_bfd_merge_sections 155 #define bfd_elfNN_bfd_merge_sections \ 156 _bfd_elf_merge_sections 157 #endif 158 159 #ifndef bfd_elfNN_bfd_is_group_section 160 #define bfd_elfNN_bfd_is_group_section bfd_elf_is_group_section 161 #endif 162 163 #ifndef bfd_elfNN_bfd_discard_group 164 #define bfd_elfNN_bfd_discard_group bfd_generic_discard_group 165 #endif 166 167 #ifndef bfd_elfNN_section_already_linked 168 #define bfd_elfNN_section_already_linked \ 169 _bfd_elf_section_already_linked 170 #endif 171 172 #ifndef bfd_elfNN_bfd_define_common_symbol 173 #define bfd_elfNN_bfd_define_common_symbol bfd_generic_define_common_symbol 174 #endif 175 176 #ifndef bfd_elfNN_bfd_make_debug_symbol 177 #define bfd_elfNN_bfd_make_debug_symbol \ 178 ((asymbol * (*) (bfd *, void *, unsigned long)) bfd_nullvoidptr) 179 #endif 180 181 #ifndef bfd_elfNN_bfd_copy_private_symbol_data 182 #define bfd_elfNN_bfd_copy_private_symbol_data \ 183 _bfd_elf_copy_private_symbol_data 184 #endif 185 186 #ifndef bfd_elfNN_bfd_copy_private_section_data 187 #define bfd_elfNN_bfd_copy_private_section_data \ 188 _bfd_elf_copy_private_section_data 189 #endif 190 #ifndef bfd_elfNN_bfd_copy_private_header_data 191 #define bfd_elfNN_bfd_copy_private_header_data \ 192 _bfd_elf_copy_private_header_data 193 #endif 194 #ifndef bfd_elfNN_bfd_copy_private_bfd_data 195 #define bfd_elfNN_bfd_copy_private_bfd_data \ 196 _bfd_elf_copy_private_bfd_data 197 #endif 198 #ifndef bfd_elfNN_bfd_print_private_bfd_data 199 #define bfd_elfNN_bfd_print_private_bfd_data \ 200 _bfd_elf_print_private_bfd_data 201 #endif 202 #ifndef bfd_elfNN_bfd_merge_private_bfd_data 203 #define bfd_elfNN_bfd_merge_private_bfd_data \ 204 ((bfd_boolean (*) (bfd *, bfd *)) bfd_true) 205 #endif 206 #ifndef bfd_elfNN_bfd_set_private_flags 207 #define bfd_elfNN_bfd_set_private_flags \ 208 ((bfd_boolean (*) (bfd *, flagword)) bfd_true) 209 #endif 210 #ifndef bfd_elfNN_bfd_is_local_label_name 211 #define bfd_elfNN_bfd_is_local_label_name _bfd_elf_is_local_label_name 212 #endif 213 #ifndef bfd_elfNN_bfd_is_target_special_symbol 214 #define bfd_elfNN_bfd_is_target_special_symbol \ 215 ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false) 216 #endif 217 218 #ifndef bfd_elfNN_get_dynamic_reloc_upper_bound 219 #define bfd_elfNN_get_dynamic_reloc_upper_bound \ 220 _bfd_elf_get_dynamic_reloc_upper_bound 221 #endif 222 #ifndef bfd_elfNN_canonicalize_dynamic_reloc 223 #define bfd_elfNN_canonicalize_dynamic_reloc \ 224 _bfd_elf_canonicalize_dynamic_reloc 225 #endif 226 227 #ifndef bfd_elfNN_bfd_link_hash_table_free 228 #define bfd_elfNN_bfd_link_hash_table_free _bfd_generic_link_hash_table_free 229 #endif 230 231 #ifdef elf_backend_relocate_section 232 #ifndef bfd_elfNN_bfd_link_hash_table_create 233 #define bfd_elfNN_bfd_link_hash_table_create _bfd_elf_link_hash_table_create 234 #endif 235 #ifndef bfd_elfNN_bfd_link_add_symbols 236 #define bfd_elfNN_bfd_link_add_symbols bfd_elf_link_add_symbols 237 #endif 238 #ifndef bfd_elfNN_bfd_final_link 239 #define bfd_elfNN_bfd_final_link bfd_elf_final_link 240 #endif 241 #else /* ! defined (elf_backend_relocate_section) */ 242 /* If no backend relocate_section routine, use the generic linker. 243 Note - this will prevent the port from being able to use some of 244 the other features of the ELF linker, because the generic hash structure 245 does not have the fields needed by the ELF linker. In particular it 246 means that linking directly to S-records will not work. */ 247 #ifndef bfd_elfNN_bfd_link_hash_table_create 248 #define bfd_elfNN_bfd_link_hash_table_create \ 249 _bfd_generic_link_hash_table_create 250 #endif 251 #ifndef bfd_elfNN_bfd_link_add_symbols 252 #define bfd_elfNN_bfd_link_add_symbols _bfd_generic_link_add_symbols 253 #endif 254 #ifndef bfd_elfNN_bfd_final_link 255 #define bfd_elfNN_bfd_final_link _bfd_generic_final_link 256 #endif 257 #endif /* ! defined (elf_backend_relocate_section) */ 258 259 #ifndef bfd_elfNN_bfd_link_just_syms 260 #define bfd_elfNN_bfd_link_just_syms _bfd_elf_link_just_syms 261 #endif 262 263 #ifndef bfd_elfNN_bfd_copy_link_hash_symbol_type 264 #define bfd_elfNN_bfd_copy_link_hash_symbol_type \ 265 _bfd_elf_copy_link_hash_symbol_type 266 #endif 267 268 #ifndef bfd_elfNN_bfd_link_split_section 269 #define bfd_elfNN_bfd_link_split_section _bfd_generic_link_split_section 270 #endif 271 272 #ifndef bfd_elfNN_archive_p 273 #define bfd_elfNN_archive_p bfd_generic_archive_p 274 #endif 275 276 #ifndef bfd_elfNN_write_archive_contents 277 #define bfd_elfNN_write_archive_contents _bfd_write_archive_contents 278 #endif 279 280 #ifndef bfd_elfNN_mkobject 281 #define bfd_elfNN_mkobject bfd_elf_make_generic_object 282 #endif 283 284 #ifndef bfd_elfNN_mkcorefile 285 #define bfd_elfNN_mkcorefile bfd_elf_mkcorefile 286 #endif 287 288 #ifndef bfd_elfNN_mkarchive 289 #define bfd_elfNN_mkarchive _bfd_generic_mkarchive 290 #endif 291 292 #ifndef bfd_elfNN_print_symbol 293 #define bfd_elfNN_print_symbol bfd_elf_print_symbol 294 #endif 295 296 #ifndef elf_symbol_leading_char 297 #define elf_symbol_leading_char 0 298 #endif 299 300 #ifndef elf_info_to_howto 301 #define elf_info_to_howto 0 302 #endif 303 304 #ifndef elf_info_to_howto_rel 305 #define elf_info_to_howto_rel 0 306 #endif 307 308 #ifndef ELF_OSABI 309 #define ELF_OSABI ELFOSABI_NONE 310 #endif 311 312 #ifndef ELF_MAXPAGESIZE 313 # error ELF_MAXPAGESIZE is not defined 314 #define ELF_MAXPAGESIZE 1 315 #endif 316 317 #ifndef ELF_COMMONPAGESIZE 318 #define ELF_COMMONPAGESIZE ELF_MAXPAGESIZE 319 #endif 320 321 #ifndef ELF_MINPAGESIZE 322 #define ELF_MINPAGESIZE ELF_COMMONPAGESIZE 323 #endif 324 325 #if ELF_COMMONPAGESIZE > ELF_MAXPAGESIZE 326 # error ELF_COMMONPAGESIZE > ELF_MAXPAGESIZE 327 #endif 328 #if ELF_MINPAGESIZE > ELF_COMMONPAGESIZE 329 # error ELF_MINPAGESIZE > ELF_COMMONPAGESIZE 330 #endif 331 332 #ifndef ELF_DYNAMIC_SEC_FLAGS 333 /* Note that we set the SEC_IN_MEMORY flag for these sections. */ 334 #define ELF_DYNAMIC_SEC_FLAGS \ 335 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS \ 336 | SEC_IN_MEMORY | SEC_LINKER_CREATED) 337 #endif 338 339 #ifndef elf_backend_collect 340 #define elf_backend_collect FALSE 341 #endif 342 #ifndef elf_backend_type_change_ok 343 #define elf_backend_type_change_ok FALSE 344 #endif 345 346 #ifndef elf_backend_sym_is_global 347 #define elf_backend_sym_is_global 0 348 #endif 349 #ifndef elf_backend_object_p 350 #define elf_backend_object_p 0 351 #endif 352 #ifndef elf_backend_symbol_processing 353 #define elf_backend_symbol_processing 0 354 #endif 355 #ifndef elf_backend_symbol_table_processing 356 #define elf_backend_symbol_table_processing 0 357 #endif 358 #ifndef elf_backend_get_symbol_type 359 #define elf_backend_get_symbol_type 0 360 #endif 361 #ifndef elf_backend_archive_symbol_lookup 362 #define elf_backend_archive_symbol_lookup _bfd_elf_archive_symbol_lookup 363 #endif 364 #ifndef elf_backend_name_local_section_symbols 365 #define elf_backend_name_local_section_symbols 0 366 #endif 367 #ifndef elf_backend_section_processing 368 #define elf_backend_section_processing 0 369 #endif 370 #ifndef elf_backend_section_from_shdr 371 #define elf_backend_section_from_shdr _bfd_elf_make_section_from_shdr 372 #endif 373 #ifndef elf_backend_section_flags 374 #define elf_backend_section_flags 0 375 #endif 376 #ifndef elf_backend_get_sec_type_attr 377 #define elf_backend_get_sec_type_attr _bfd_elf_get_sec_type_attr 378 #endif 379 #ifndef elf_backend_section_from_phdr 380 #define elf_backend_section_from_phdr _bfd_elf_make_section_from_phdr 381 #endif 382 #ifndef elf_backend_fake_sections 383 #define elf_backend_fake_sections 0 384 #endif 385 #ifndef elf_backend_section_from_bfd_section 386 #define elf_backend_section_from_bfd_section 0 387 #endif 388 #ifndef elf_backend_add_symbol_hook 389 #define elf_backend_add_symbol_hook 0 390 #endif 391 #ifndef elf_backend_link_output_symbol_hook 392 #define elf_backend_link_output_symbol_hook 0 393 #endif 394 #ifndef elf_backend_create_dynamic_sections 395 #define elf_backend_create_dynamic_sections 0 396 #endif 397 #ifndef elf_backend_omit_section_dynsym 398 #define elf_backend_omit_section_dynsym _bfd_elf_link_omit_section_dynsym 399 #endif 400 #ifndef elf_backend_relocs_compatible 401 #define elf_backend_relocs_compatible _bfd_elf_default_relocs_compatible 402 #endif 403 #ifndef elf_backend_check_relocs 404 #define elf_backend_check_relocs 0 405 #endif 406 #ifndef elf_backend_check_directives 407 #define elf_backend_check_directives 0 408 #endif 409 #ifndef elf_backend_as_needed_cleanup 410 #define elf_backend_as_needed_cleanup 0 411 #endif 412 #ifndef elf_backend_adjust_dynamic_symbol 413 #define elf_backend_adjust_dynamic_symbol 0 414 #endif 415 #ifndef elf_backend_always_size_sections 416 #define elf_backend_always_size_sections 0 417 #endif 418 #ifndef elf_backend_size_dynamic_sections 419 #define elf_backend_size_dynamic_sections 0 420 #endif 421 #ifndef elf_backend_init_index_section 422 #define elf_backend_init_index_section \ 423 ((void (*) (bfd *, struct bfd_link_info *)) bfd_void) 424 #endif 425 #ifndef elf_backend_relocate_section 426 #define elf_backend_relocate_section 0 427 #endif 428 #ifndef elf_backend_finish_dynamic_symbol 429 #define elf_backend_finish_dynamic_symbol 0 430 #endif 431 #ifndef elf_backend_finish_dynamic_sections 432 #define elf_backend_finish_dynamic_sections 0 433 #endif 434 #ifndef elf_backend_begin_write_processing 435 #define elf_backend_begin_write_processing 0 436 #endif 437 #ifndef elf_backend_final_write_processing 438 #define elf_backend_final_write_processing 0 439 #endif 440 #ifndef elf_backend_additional_program_headers 441 #define elf_backend_additional_program_headers 0 442 #endif 443 #ifndef elf_backend_modify_segment_map 444 #define elf_backend_modify_segment_map 0 445 #endif 446 #ifndef elf_backend_modify_program_headers 447 #define elf_backend_modify_program_headers 0 448 #endif 449 #ifndef elf_backend_ecoff_debug_swap 450 #define elf_backend_ecoff_debug_swap 0 451 #endif 452 #ifndef elf_backend_bfd_from_remote_memory 453 #define elf_backend_bfd_from_remote_memory _bfd_elfNN_bfd_from_remote_memory 454 #endif 455 #ifndef elf_backend_got_header_size 456 #define elf_backend_got_header_size 0 457 #endif 458 #ifndef elf_backend_got_elt_size 459 #define elf_backend_got_elt_size _bfd_elf_default_got_elt_size 460 #endif 461 #ifndef elf_backend_obj_attrs_vendor 462 #define elf_backend_obj_attrs_vendor NULL 463 #endif 464 #ifndef elf_backend_obj_attrs_section 465 #define elf_backend_obj_attrs_section NULL 466 #endif 467 #ifndef elf_backend_obj_attrs_arg_type 468 #define elf_backend_obj_attrs_arg_type NULL 469 #endif 470 #ifndef elf_backend_obj_attrs_section_type 471 #define elf_backend_obj_attrs_section_type SHT_GNU_ATTRIBUTES 472 #endif 473 #ifndef elf_backend_obj_attrs_order 474 #define elf_backend_obj_attrs_order NULL 475 #endif 476 #ifndef elf_backend_post_process_headers 477 #define elf_backend_post_process_headers NULL 478 #endif 479 #ifndef elf_backend_print_symbol_all 480 #define elf_backend_print_symbol_all NULL 481 #endif 482 #ifndef elf_backend_output_arch_local_syms 483 #define elf_backend_output_arch_local_syms NULL 484 #endif 485 #ifndef elf_backend_output_arch_syms 486 #define elf_backend_output_arch_syms NULL 487 #endif 488 #ifndef elf_backend_copy_indirect_symbol 489 #define elf_backend_copy_indirect_symbol _bfd_elf_link_hash_copy_indirect 490 #endif 491 #ifndef elf_backend_hide_symbol 492 #define elf_backend_hide_symbol _bfd_elf_link_hash_hide_symbol 493 #endif 494 #ifndef elf_backend_fixup_symbol 495 #define elf_backend_fixup_symbol NULL 496 #endif 497 #ifndef elf_backend_merge_symbol_attribute 498 #define elf_backend_merge_symbol_attribute NULL 499 #endif 500 #ifndef elf_backend_get_target_dtag 501 #define elf_backend_get_target_dtag NULL 502 #endif 503 #ifndef elf_backend_ignore_undef_symbol 504 #define elf_backend_ignore_undef_symbol NULL 505 #endif 506 #ifndef elf_backend_emit_relocs 507 #define elf_backend_emit_relocs _bfd_elf_link_output_relocs 508 #endif 509 #ifndef elf_backend_count_relocs 510 #define elf_backend_count_relocs NULL 511 #endif 512 #ifndef elf_backend_grok_prstatus 513 #define elf_backend_grok_prstatus NULL 514 #endif 515 #ifndef elf_backend_grok_psinfo 516 #define elf_backend_grok_psinfo NULL 517 #endif 518 #ifndef elf_backend_write_core_note 519 #define elf_backend_write_core_note NULL 520 #endif 521 #ifndef elf_backend_reloc_type_class 522 #define elf_backend_reloc_type_class _bfd_elf_reloc_type_class 523 #endif 524 #ifndef elf_backend_discard_info 525 #define elf_backend_discard_info NULL 526 #endif 527 #ifndef elf_backend_ignore_discarded_relocs 528 #define elf_backend_ignore_discarded_relocs NULL 529 #endif 530 #ifndef elf_backend_action_discarded 531 #define elf_backend_action_discarded _bfd_elf_default_action_discarded 532 #endif 533 #ifndef elf_backend_eh_frame_address_size 534 #define elf_backend_eh_frame_address_size _bfd_elf_eh_frame_address_size 535 #endif 536 #ifndef elf_backend_can_make_relative_eh_frame 537 #define elf_backend_can_make_relative_eh_frame _bfd_elf_can_make_relative 538 #endif 539 #ifndef elf_backend_can_make_lsda_relative_eh_frame 540 #define elf_backend_can_make_lsda_relative_eh_frame _bfd_elf_can_make_relative 541 #endif 542 #ifndef elf_backend_encode_eh_address 543 #define elf_backend_encode_eh_address _bfd_elf_encode_eh_address 544 #endif 545 #ifndef elf_backend_write_section 546 #define elf_backend_write_section NULL 547 #endif 548 #ifndef elf_backend_mips_irix_compat 549 #define elf_backend_mips_irix_compat NULL 550 #endif 551 #ifndef elf_backend_mips_rtype_to_howto 552 #define elf_backend_mips_rtype_to_howto NULL 553 #endif 554 555 /* Previously, backends could only use SHT_REL or SHT_RELA relocation 556 sections, but not both. They defined USE_REL to indicate SHT_REL 557 sections, and left it undefined to indicated SHT_RELA sections. 558 For backwards compatibility, we still support this usage. */ 559 #ifndef USE_REL 560 #define USE_REL 0 561 #endif 562 563 /* Use these in new code. */ 564 #ifndef elf_backend_may_use_rel_p 565 #define elf_backend_may_use_rel_p USE_REL 566 #endif 567 #ifndef elf_backend_may_use_rela_p 568 #define elf_backend_may_use_rela_p !USE_REL 569 #endif 570 #ifndef elf_backend_default_use_rela_p 571 #define elf_backend_default_use_rela_p !USE_REL 572 #endif 573 #ifndef elf_backend_rela_plts_and_copies_p 574 #define elf_backend_rela_plts_and_copies_p elf_backend_default_use_rela_p 575 #endif 576 577 #ifndef elf_backend_rela_normal 578 #define elf_backend_rela_normal 0 579 #endif 580 581 #ifndef elf_backend_plt_sym_val 582 #define elf_backend_plt_sym_val NULL 583 #endif 584 #ifndef elf_backend_relplt_name 585 #define elf_backend_relplt_name NULL 586 #endif 587 588 #ifndef ELF_MACHINE_ALT1 589 #define ELF_MACHINE_ALT1 0 590 #endif 591 592 #ifndef ELF_MACHINE_ALT2 593 #define ELF_MACHINE_ALT2 0 594 #endif 595 596 #ifndef elf_backend_size_info 597 #define elf_backend_size_info _bfd_elfNN_size_info 598 #endif 599 600 #ifndef elf_backend_special_sections 601 #define elf_backend_special_sections NULL 602 #endif 603 604 #ifndef elf_backend_sign_extend_vma 605 #define elf_backend_sign_extend_vma 0 606 #endif 607 608 #ifndef elf_backend_link_order_error_handler 609 #define elf_backend_link_order_error_handler _bfd_default_error_handler 610 #endif 611 612 #ifndef elf_backend_common_definition 613 #define elf_backend_common_definition _bfd_elf_common_definition 614 #endif 615 616 #ifndef elf_backend_common_section_index 617 #define elf_backend_common_section_index _bfd_elf_common_section_index 618 #endif 619 620 #ifndef elf_backend_common_section 621 #define elf_backend_common_section _bfd_elf_common_section 622 #endif 623 624 #ifndef elf_backend_merge_symbol 625 #define elf_backend_merge_symbol NULL 626 #endif 627 628 #ifndef elf_backend_hash_symbol 629 #define elf_backend_hash_symbol _bfd_elf_hash_symbol 630 #endif 631 632 #ifndef elf_backend_is_function_type 633 #define elf_backend_is_function_type _bfd_elf_is_function_type 634 #endif 635 636 extern const struct elf_size_info _bfd_elfNN_size_info; 637 638 static struct elf_backend_data elfNN_bed = 639 { 640 ELF_ARCH, /* arch */ 641 ELF_MACHINE_CODE, /* elf_machine_code */ 642 ELF_OSABI, /* elf_osabi */ 643 ELF_MAXPAGESIZE, /* maxpagesize */ 644 ELF_MINPAGESIZE, /* minpagesize */ 645 ELF_COMMONPAGESIZE, /* commonpagesize */ 646 ELF_DYNAMIC_SEC_FLAGS, /* dynamic_sec_flags */ 647 elf_info_to_howto, 648 elf_info_to_howto_rel, 649 elf_backend_sym_is_global, 650 elf_backend_object_p, 651 elf_backend_symbol_processing, 652 elf_backend_symbol_table_processing, 653 elf_backend_get_symbol_type, 654 elf_backend_archive_symbol_lookup, 655 elf_backend_name_local_section_symbols, 656 elf_backend_section_processing, 657 elf_backend_section_from_shdr, 658 elf_backend_section_flags, 659 elf_backend_get_sec_type_attr, 660 elf_backend_section_from_phdr, 661 elf_backend_fake_sections, 662 elf_backend_section_from_bfd_section, 663 elf_backend_add_symbol_hook, 664 elf_backend_link_output_symbol_hook, 665 elf_backend_create_dynamic_sections, 666 elf_backend_omit_section_dynsym, 667 elf_backend_relocs_compatible, 668 elf_backend_check_relocs, 669 elf_backend_check_directives, 670 elf_backend_as_needed_cleanup, 671 elf_backend_adjust_dynamic_symbol, 672 elf_backend_always_size_sections, 673 elf_backend_size_dynamic_sections, 674 elf_backend_init_index_section, 675 elf_backend_relocate_section, 676 elf_backend_finish_dynamic_symbol, 677 elf_backend_finish_dynamic_sections, 678 elf_backend_begin_write_processing, 679 elf_backend_final_write_processing, 680 elf_backend_additional_program_headers, 681 elf_backend_modify_segment_map, 682 elf_backend_modify_program_headers, 683 elf_backend_gc_keep, 684 elf_backend_gc_mark_dynamic_ref, 685 elf_backend_gc_mark_hook, 686 elf_backend_gc_mark_extra_sections, 687 elf_backend_gc_sweep_hook, 688 elf_backend_post_process_headers, 689 elf_backend_print_symbol_all, 690 elf_backend_output_arch_local_syms, 691 elf_backend_output_arch_syms, 692 elf_backend_copy_indirect_symbol, 693 elf_backend_hide_symbol, 694 elf_backend_fixup_symbol, 695 elf_backend_merge_symbol_attribute, 696 elf_backend_get_target_dtag, 697 elf_backend_ignore_undef_symbol, 698 elf_backend_emit_relocs, 699 elf_backend_count_relocs, 700 elf_backend_grok_prstatus, 701 elf_backend_grok_psinfo, 702 elf_backend_write_core_note, 703 elf_backend_reloc_type_class, 704 elf_backend_discard_info, 705 elf_backend_ignore_discarded_relocs, 706 elf_backend_action_discarded, 707 elf_backend_eh_frame_address_size, 708 elf_backend_can_make_relative_eh_frame, 709 elf_backend_can_make_lsda_relative_eh_frame, 710 elf_backend_encode_eh_address, 711 elf_backend_write_section, 712 elf_backend_mips_irix_compat, 713 elf_backend_mips_rtype_to_howto, 714 elf_backend_ecoff_debug_swap, 715 elf_backend_bfd_from_remote_memory, 716 elf_backend_plt_sym_val, 717 elf_backend_common_definition, 718 elf_backend_common_section_index, 719 elf_backend_common_section, 720 elf_backend_merge_symbol, 721 elf_backend_hash_symbol, 722 elf_backend_is_function_type, 723 elf_backend_link_order_error_handler, 724 elf_backend_relplt_name, 725 ELF_MACHINE_ALT1, 726 ELF_MACHINE_ALT2, 727 &elf_backend_size_info, 728 elf_backend_special_sections, 729 elf_backend_got_header_size, 730 elf_backend_got_elt_size, 731 elf_backend_obj_attrs_vendor, 732 elf_backend_obj_attrs_section, 733 elf_backend_obj_attrs_arg_type, 734 elf_backend_obj_attrs_section_type, 735 elf_backend_obj_attrs_order, 736 elf_backend_collect, 737 elf_backend_type_change_ok, 738 elf_backend_may_use_rel_p, 739 elf_backend_may_use_rela_p, 740 elf_backend_default_use_rela_p, 741 elf_backend_rela_plts_and_copies_p, 742 elf_backend_rela_normal, 743 elf_backend_sign_extend_vma, 744 elf_backend_want_got_plt, 745 elf_backend_plt_readonly, 746 elf_backend_want_plt_sym, 747 elf_backend_plt_not_loaded, 748 elf_backend_plt_alignment, 749 elf_backend_can_gc_sections, 750 elf_backend_can_refcount, 751 elf_backend_want_got_sym, 752 elf_backend_want_dynbss, 753 elf_backend_want_p_paddr_set_to_zero, 754 elf_backend_default_execstack 755 }; 756 757 /* Forward declaration for use when initialising alternative_target field. */ 758 #ifdef TARGET_LITTLE_SYM 759 extern const bfd_target TARGET_LITTLE_SYM; 760 #endif 761 762 #ifdef TARGET_BIG_SYM 763 const bfd_target TARGET_BIG_SYM = 764 { 765 /* name: identify kind of target */ 766 TARGET_BIG_NAME, 767 768 /* flavour: general indication about file */ 769 bfd_target_elf_flavour, 770 771 /* byteorder: data is big endian */ 772 BFD_ENDIAN_BIG, 773 774 /* header_byteorder: header is also big endian */ 775 BFD_ENDIAN_BIG, 776 777 /* object_flags: mask of all file flags */ 778 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS 779 | DYNAMIC | WP_TEXT | D_PAGED), 780 781 /* section_flags: mask of all section flags */ 782 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY 783 | SEC_CODE | SEC_DATA | SEC_DEBUGGING | SEC_EXCLUDE | SEC_SORT_ENTRIES 784 | SEC_SMALL_DATA | SEC_MERGE | SEC_STRINGS | SEC_GROUP), 785 786 /* leading_symbol_char: is the first char of a user symbol 787 predictable, and if so what is it */ 788 elf_symbol_leading_char, 789 790 /* ar_pad_char: pad character for filenames within an archive header 791 FIXME: this really has nothing to do with ELF, this is a characteristic 792 of the archiver and/or os and should be independently tunable */ 793 '/', 794 795 /* ar_max_namelen: maximum number of characters in an archive header 796 FIXME: this really has nothing to do with ELF, this is a characteristic 797 of the archiver and should be independently tunable. The System V ABI, 798 Chapter 7 (Formats & Protocols), Archive section sets this as 15. */ 799 15, 800 801 /* Routines to byte-swap various sized integers from the data sections */ 802 bfd_getb64, bfd_getb_signed_64, bfd_putb64, 803 bfd_getb32, bfd_getb_signed_32, bfd_putb32, 804 bfd_getb16, bfd_getb_signed_16, bfd_putb16, 805 806 /* Routines to byte-swap various sized integers from the file headers */ 807 bfd_getb64, bfd_getb_signed_64, bfd_putb64, 808 bfd_getb32, bfd_getb_signed_32, bfd_putb32, 809 bfd_getb16, bfd_getb_signed_16, bfd_putb16, 810 811 /* bfd_check_format: check the format of a file being read */ 812 { _bfd_dummy_target, /* unknown format */ 813 bfd_elfNN_object_p, /* assembler/linker output (object file) */ 814 bfd_elfNN_archive_p, /* an archive */ 815 bfd_elfNN_core_file_p /* a core file */ 816 }, 817 818 /* bfd_set_format: set the format of a file being written */ 819 { bfd_false, 820 bfd_elfNN_mkobject, 821 bfd_elfNN_mkarchive, 822 bfd_elfNN_mkcorefile 823 }, 824 825 /* bfd_write_contents: write cached information into a file being written */ 826 { bfd_false, 827 bfd_elfNN_write_object_contents, 828 bfd_elfNN_write_archive_contents, 829 bfd_elfNN_write_corefile_contents, 830 }, 831 832 BFD_JUMP_TABLE_GENERIC (bfd_elfNN), 833 BFD_JUMP_TABLE_COPY (bfd_elfNN), 834 BFD_JUMP_TABLE_CORE (bfd_elfNN), 835 #ifdef bfd_elfNN_archive_functions 836 BFD_JUMP_TABLE_ARCHIVE (bfd_elfNN_archive), 837 #else 838 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), 839 #endif 840 BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN), 841 BFD_JUMP_TABLE_RELOCS (bfd_elfNN), 842 BFD_JUMP_TABLE_WRITE (bfd_elfNN), 843 BFD_JUMP_TABLE_LINK (bfd_elfNN), 844 BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN), 845 846 /* Alternative endian target. */ 847 #ifdef TARGET_LITTLE_SYM 848 & TARGET_LITTLE_SYM, 849 #else 850 NULL, 851 #endif 852 853 /* backend_data: */ 854 &elfNN_bed 855 }; 856 #endif 857 858 #ifdef TARGET_LITTLE_SYM 859 const bfd_target TARGET_LITTLE_SYM = 860 { 861 /* name: identify kind of target */ 862 TARGET_LITTLE_NAME, 863 864 /* flavour: general indication about file */ 865 bfd_target_elf_flavour, 866 867 /* byteorder: data is little endian */ 868 BFD_ENDIAN_LITTLE, 869 870 /* header_byteorder: header is also little endian */ 871 BFD_ENDIAN_LITTLE, 872 873 /* object_flags: mask of all file flags */ 874 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS 875 | DYNAMIC | WP_TEXT | D_PAGED), 876 877 /* section_flags: mask of all section flags */ 878 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY 879 | SEC_CODE | SEC_DATA | SEC_DEBUGGING | SEC_EXCLUDE | SEC_SORT_ENTRIES 880 | SEC_SMALL_DATA | SEC_MERGE | SEC_STRINGS | SEC_GROUP), 881 882 /* leading_symbol_char: is the first char of a user symbol 883 predictable, and if so what is it */ 884 elf_symbol_leading_char, 885 886 /* ar_pad_char: pad character for filenames within an archive header 887 FIXME: this really has nothing to do with ELF, this is a characteristic 888 of the archiver and/or os and should be independently tunable */ 889 '/', 890 891 /* ar_max_namelen: maximum number of characters in an archive header 892 FIXME: this really has nothing to do with ELF, this is a characteristic 893 of the archiver and should be independently tunable. The System V ABI, 894 Chapter 7 (Formats & Protocols), Archive section sets this as 15. */ 895 15, 896 897 /* Routines to byte-swap various sized integers from the data sections */ 898 bfd_getl64, bfd_getl_signed_64, bfd_putl64, 899 bfd_getl32, bfd_getl_signed_32, bfd_putl32, 900 bfd_getl16, bfd_getl_signed_16, bfd_putl16, 901 902 /* Routines to byte-swap various sized integers from the file headers */ 903 bfd_getl64, bfd_getl_signed_64, bfd_putl64, 904 bfd_getl32, bfd_getl_signed_32, bfd_putl32, 905 bfd_getl16, bfd_getl_signed_16, bfd_putl16, 906 907 /* bfd_check_format: check the format of a file being read */ 908 { _bfd_dummy_target, /* unknown format */ 909 bfd_elfNN_object_p, /* assembler/linker output (object file) */ 910 bfd_elfNN_archive_p, /* an archive */ 911 bfd_elfNN_core_file_p /* a core file */ 912 }, 913 914 /* bfd_set_format: set the format of a file being written */ 915 { bfd_false, 916 bfd_elfNN_mkobject, 917 bfd_elfNN_mkarchive, 918 bfd_elfNN_mkcorefile 919 }, 920 921 /* bfd_write_contents: write cached information into a file being written */ 922 { bfd_false, 923 bfd_elfNN_write_object_contents, 924 bfd_elfNN_write_archive_contents, 925 bfd_elfNN_write_corefile_contents, 926 }, 927 928 BFD_JUMP_TABLE_GENERIC (bfd_elfNN), 929 BFD_JUMP_TABLE_COPY (bfd_elfNN), 930 BFD_JUMP_TABLE_CORE (bfd_elfNN), 931 #ifdef bfd_elfNN_archive_functions 932 BFD_JUMP_TABLE_ARCHIVE (bfd_elfNN_archive), 933 #else 934 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), 935 #endif 936 BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN), 937 BFD_JUMP_TABLE_RELOCS (bfd_elfNN), 938 BFD_JUMP_TABLE_WRITE (bfd_elfNN), 939 BFD_JUMP_TABLE_LINK (bfd_elfNN), 940 BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN), 941 942 /* Alternative endian target. */ 943 #ifdef TARGET_BIG_SYM 944 & TARGET_BIG_SYM, 945 #else 946 NULL, 947 #endif 948 949 /* backend_data: */ 950 &elfNN_bed 951 }; 952 #endif 953