1/* Generic target-file-type support for the BFD library. 2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 3 2000, 2001, 2002 4 Free Software Foundation, Inc. 5 Written by Cygnus Support. 6 7This file is part of BFD, the Binary File Descriptor library. 8 9This program is free software; you can redistribute it and/or modify 10it under the terms of the GNU General Public License as published by 11the Free Software Foundation; either version 2 of the License, or 12(at your option) any later version. 13 14This program is distributed in the hope that it will be useful, 15but WITHOUT ANY WARRANTY; without even the implied warranty of 16MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17GNU General Public License for more details. 18 19You should have received a copy of the GNU General Public License 20along with this program; if not, write to the Free Software 21Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 22 23#include "bfd.h" 24#include "sysdep.h" 25#include "libbfd.h" 26#include "fnmatch.h" 27 28/* 29SECTION 30 Targets 31 32DESCRIPTION 33 Each port of BFD to a different machine requries the creation 34 of a target back end. All the back end provides to the root 35 part of BFD is a structure containing pointers to functions 36 which perform certain low level operations on files. BFD 37 translates the applications's requests through a pointer into 38 calls to the back end routines. 39 40 When a file is opened with <<bfd_openr>>, its format and 41 target are unknown. BFD uses various mechanisms to determine 42 how to interpret the file. The operations performed are: 43 44 o Create a BFD by calling the internal routine 45 <<_bfd_new_bfd>>, then call <<bfd_find_target>> with the 46 target string supplied to <<bfd_openr>> and the new BFD pointer. 47 48 o If a null target string was provided to <<bfd_find_target>>, 49 look up the environment variable <<GNUTARGET>> and use 50 that as the target string. 51 52 o If the target string is still <<NULL>>, or the target string is 53 <<default>>, then use the first item in the target vector 54 as the target type, and set <<target_defaulted>> in the BFD to 55 cause <<bfd_check_format>> to loop through all the targets. 56 @xref{bfd_target}. @xref{Formats}. 57 58 o Otherwise, inspect the elements in the target vector 59 one by one, until a match on target name is found. When found, 60 use it. 61 62 o Otherwise return the error <<bfd_error_invalid_target>> to 63 <<bfd_openr>>. 64 65 o <<bfd_openr>> attempts to open the file using 66 <<bfd_open_file>>, and returns the BFD. 67 68 Once the BFD has been opened and the target selected, the file 69 format may be determined. This is done by calling 70 <<bfd_check_format>> on the BFD with a suggested format. 71 If <<target_defaulted>> has been set, each possible target 72 type is tried to see if it recognizes the specified format. 73 <<bfd_check_format>> returns <<true>> when the caller guesses right. 74@menu 75@* bfd_target:: 76@end menu 77*/ 78 79/* 80 81INODE 82 bfd_target, , Targets, Targets 83DOCDD 84SUBSECTION 85 bfd_target 86 87DESCRIPTION 88 This structure contains everything that BFD knows about a 89 target. It includes things like its byte order, name, and which 90 routines to call to do various operations. 91 92 Every BFD points to a target structure with its <<xvec>> 93 member. 94 95 The macros below are used to dispatch to functions through the 96 <<bfd_target>> vector. They are used in a number of macros further 97 down in @file{bfd.h}, and are also used when calling various 98 routines by hand inside the BFD implementation. The @var{arglist} 99 argument must be parenthesized; it contains all the arguments 100 to the called function. 101 102 They make the documentation (more) unpleasant to read, so if 103 someone wants to fix this and not break the above, please do. 104 105.#define BFD_SEND(bfd, message, arglist) \ 106. ((*((bfd)->xvec->message)) arglist) 107. 108.#ifdef DEBUG_BFD_SEND 109.#undef BFD_SEND 110.#define BFD_SEND(bfd, message, arglist) \ 111. (((bfd) && (bfd)->xvec && (bfd)->xvec->message) ? \ 112. ((*((bfd)->xvec->message)) arglist) : \ 113. (bfd_assert (__FILE__,__LINE__), NULL)) 114.#endif 115 116 For operations which index on the BFD format: 117 118.#define BFD_SEND_FMT(bfd, message, arglist) \ 119. (((bfd)->xvec->message[(int) ((bfd)->format)]) arglist) 120. 121.#ifdef DEBUG_BFD_SEND 122.#undef BFD_SEND_FMT 123.#define BFD_SEND_FMT(bfd, message, arglist) \ 124. (((bfd) && (bfd)->xvec && (bfd)->xvec->message) ? \ 125. (((bfd)->xvec->message[(int) ((bfd)->format)]) arglist) : \ 126. (bfd_assert (__FILE__,__LINE__), NULL)) 127.#endif 128. 129 This is the structure which defines the type of BFD this is. The 130 <<xvec>> member of the struct <<bfd>> itself points here. Each 131 module that implements access to a different target under BFD, 132 defines one of these. 133 134 FIXME, these names should be rationalised with the names of 135 the entry points which call them. Too bad we can't have one 136 macro to define them both! 137 138.enum bfd_flavour 139.{ 140. bfd_target_unknown_flavour, 141. bfd_target_aout_flavour, 142. bfd_target_coff_flavour, 143. bfd_target_ecoff_flavour, 144. bfd_target_xcoff_flavour, 145. bfd_target_elf_flavour, 146. bfd_target_ieee_flavour, 147. bfd_target_nlm_flavour, 148. bfd_target_oasys_flavour, 149. bfd_target_tekhex_flavour, 150. bfd_target_srec_flavour, 151. bfd_target_ihex_flavour, 152. bfd_target_som_flavour, 153. bfd_target_os9k_flavour, 154. bfd_target_versados_flavour, 155. bfd_target_msdos_flavour, 156. bfd_target_ovax_flavour, 157. bfd_target_evax_flavour, 158. bfd_target_mmo_flavour 159.}; 160. 161.enum bfd_endian { BFD_ENDIAN_BIG, BFD_ENDIAN_LITTLE, BFD_ENDIAN_UNKNOWN }; 162. 163.{* Forward declaration. *} 164.typedef struct bfd_link_info _bfd_link_info; 165. 166.typedef struct bfd_target 167.{ 168. {* Identifies the kind of target, e.g., SunOS4, Ultrix, etc. *} 169. char *name; 170. 171. {* The "flavour" of a back end is a general indication about 172. the contents of a file. *} 173. enum bfd_flavour flavour; 174. 175. {* The order of bytes within the data area of a file. *} 176. enum bfd_endian byteorder; 177. 178. {* The order of bytes within the header parts of a file. *} 179. enum bfd_endian header_byteorder; 180. 181. {* A mask of all the flags which an executable may have set - 182. from the set <<BFD_NO_FLAGS>>, <<HAS_RELOC>>, ...<<D_PAGED>>. *} 183. flagword object_flags; 184. 185. {* A mask of all the flags which a section may have set - from 186. the set <<SEC_NO_FLAGS>>, <<SEC_ALLOC>>, ...<<SET_NEVER_LOAD>>. *} 187. flagword section_flags; 188. 189. {* The character normally found at the front of a symbol. 190. (if any), perhaps `_'. *} 191. char symbol_leading_char; 192. 193. {* The pad character for file names within an archive header. *} 194. char ar_pad_char; 195. 196. {* The maximum number of characters in an archive header. *} 197. unsigned short ar_max_namelen; 198. 199. {* Entries for byte swapping for data. These are different from the 200. other entry points, since they don't take a BFD asthe first argument. 201. Certain other handlers could do the same. *} 202. bfd_vma (*bfd_getx64) PARAMS ((const bfd_byte *)); 203. bfd_signed_vma (*bfd_getx_signed_64) PARAMS ((const bfd_byte *)); 204. void (*bfd_putx64) PARAMS ((bfd_vma, bfd_byte *)); 205. bfd_vma (*bfd_getx32) PARAMS ((const bfd_byte *)); 206. bfd_signed_vma (*bfd_getx_signed_32) PARAMS ((const bfd_byte *)); 207. void (*bfd_putx32) PARAMS ((bfd_vma, bfd_byte *)); 208. bfd_vma (*bfd_getx16) PARAMS ((const bfd_byte *)); 209. bfd_signed_vma (*bfd_getx_signed_16) PARAMS ((const bfd_byte *)); 210. void (*bfd_putx16) PARAMS ((bfd_vma, bfd_byte *)); 211. 212. {* Byte swapping for the headers. *} 213. bfd_vma (*bfd_h_getx64) PARAMS ((const bfd_byte *)); 214. bfd_signed_vma (*bfd_h_getx_signed_64) PARAMS ((const bfd_byte *)); 215. void (*bfd_h_putx64) PARAMS ((bfd_vma, bfd_byte *)); 216. bfd_vma (*bfd_h_getx32) PARAMS ((const bfd_byte *)); 217. bfd_signed_vma (*bfd_h_getx_signed_32) PARAMS ((const bfd_byte *)); 218. void (*bfd_h_putx32) PARAMS ((bfd_vma, bfd_byte *)); 219. bfd_vma (*bfd_h_getx16) PARAMS ((const bfd_byte *)); 220. bfd_signed_vma (*bfd_h_getx_signed_16) PARAMS ((const bfd_byte *)); 221. void (*bfd_h_putx16) PARAMS ((bfd_vma, bfd_byte *)); 222. 223. {* Format dependent routines: these are vectors of entry points 224. within the target vector structure, one for each format to check. *} 225. 226. {* Check the format of a file being read. Return a <<bfd_target *>> or zero. *} 227. const struct bfd_target *(*_bfd_check_format[bfd_type_end]) PARAMS ((bfd *)); 228. 229. {* Set the format of a file being written. *} 230. boolean (*_bfd_set_format[bfd_type_end]) PARAMS ((bfd *)); 231. 232. {* Write cached information into a file being written, at <<bfd_close>>. *} 233. boolean (*_bfd_write_contents[bfd_type_end]) PARAMS ((bfd *)); 234. 235The general target vector. These vectors are initialized using the 236BFD_JUMP_TABLE macros. 237. 238. {* Generic entry points. *} 239Do not "beautify" the CONCAT* macro args. Traditional C will not 240remove whitespace added here, and thus will fail to concatenate 241the tokens. 242.#define BFD_JUMP_TABLE_GENERIC(NAME) \ 243.CONCAT2 (NAME,_close_and_cleanup), \ 244.CONCAT2 (NAME,_bfd_free_cached_info), \ 245.CONCAT2 (NAME,_new_section_hook), \ 246.CONCAT2 (NAME,_get_section_contents), \ 247.CONCAT2 (NAME,_get_section_contents_in_window) 248. 249. {* Called when the BFD is being closed to do any necessary cleanup. *} 250. boolean (*_close_and_cleanup) PARAMS ((bfd *)); 251. {* Ask the BFD to free all cached information. *} 252. boolean (*_bfd_free_cached_info) PARAMS ((bfd *)); 253. {* Called when a new section is created. *} 254. boolean (*_new_section_hook) PARAMS ((bfd *, sec_ptr)); 255. {* Read the contents of a section. *} 256. boolean (*_bfd_get_section_contents) PARAMS ((bfd *, sec_ptr, PTR, 257. file_ptr, bfd_size_type)); 258. boolean (*_bfd_get_section_contents_in_window) 259. PARAMS ((bfd *, sec_ptr, bfd_window *, file_ptr, bfd_size_type)); 260. 261. {* Entry points to copy private data. *} 262.#define BFD_JUMP_TABLE_COPY(NAME) \ 263.CONCAT2 (NAME,_bfd_copy_private_bfd_data), \ 264.CONCAT2 (NAME,_bfd_merge_private_bfd_data), \ 265.CONCAT2 (NAME,_bfd_copy_private_section_data), \ 266.CONCAT2 (NAME,_bfd_copy_private_symbol_data), \ 267.CONCAT2 (NAME,_bfd_set_private_flags), \ 268.CONCAT2 (NAME,_bfd_print_private_bfd_data) \ 269. {* Called to copy BFD general private data from one object file 270. to another. *} 271. boolean (*_bfd_copy_private_bfd_data) PARAMS ((bfd *, bfd *)); 272. {* Called to merge BFD general private data from one object file 273. to a common output file when linking. *} 274. boolean (*_bfd_merge_private_bfd_data) PARAMS ((bfd *, bfd *)); 275. {* Called to copy BFD private section data from one object file 276. to another. *} 277. boolean (*_bfd_copy_private_section_data) PARAMS ((bfd *, sec_ptr, 278. bfd *, sec_ptr)); 279. {* Called to copy BFD private symbol data from one symbol 280. to another. *} 281. boolean (*_bfd_copy_private_symbol_data) PARAMS ((bfd *, asymbol *, 282. bfd *, asymbol *)); 283. {* Called to set private backend flags. *} 284. boolean (*_bfd_set_private_flags) PARAMS ((bfd *, flagword)); 285. 286. {* Called to print private BFD data. *} 287. boolean (*_bfd_print_private_bfd_data) PARAMS ((bfd *, PTR)); 288. 289. {* Core file entry points. *} 290.#define BFD_JUMP_TABLE_CORE(NAME) \ 291.CONCAT2 (NAME,_core_file_failing_command), \ 292.CONCAT2 (NAME,_core_file_failing_signal), \ 293.CONCAT2 (NAME,_core_file_matches_executable_p) 294. char * (*_core_file_failing_command) PARAMS ((bfd *)); 295. int (*_core_file_failing_signal) PARAMS ((bfd *)); 296. boolean (*_core_file_matches_executable_p) PARAMS ((bfd *, bfd *)); 297. 298. {* Archive entry points. *} 299.#define BFD_JUMP_TABLE_ARCHIVE(NAME) \ 300.CONCAT2 (NAME,_slurp_armap), \ 301.CONCAT2 (NAME,_slurp_extended_name_table), \ 302.CONCAT2 (NAME,_construct_extended_name_table), \ 303.CONCAT2 (NAME,_truncate_arname), \ 304.CONCAT2 (NAME,_write_armap), \ 305.CONCAT2 (NAME,_read_ar_hdr), \ 306.CONCAT2 (NAME,_openr_next_archived_file), \ 307.CONCAT2 (NAME,_get_elt_at_index), \ 308.CONCAT2 (NAME,_generic_stat_arch_elt), \ 309.CONCAT2 (NAME,_update_armap_timestamp) 310. boolean (*_bfd_slurp_armap) PARAMS ((bfd *)); 311. boolean (*_bfd_slurp_extended_name_table) PARAMS ((bfd *)); 312. boolean (*_bfd_construct_extended_name_table) 313. PARAMS ((bfd *, char **, bfd_size_type *, const char **)); 314. void (*_bfd_truncate_arname) PARAMS ((bfd *, const char *, char *)); 315. boolean (*write_armap) 316. PARAMS ((bfd *, unsigned int, struct orl *, unsigned int, int)); 317. PTR (*_bfd_read_ar_hdr_fn) PARAMS ((bfd *)); 318. bfd * (*openr_next_archived_file) PARAMS ((bfd *, bfd *)); 319.#define bfd_get_elt_at_index(b,i) BFD_SEND(b, _bfd_get_elt_at_index, (b,i)) 320. bfd * (*_bfd_get_elt_at_index) PARAMS ((bfd *, symindex)); 321. int (*_bfd_stat_arch_elt) PARAMS ((bfd *, struct stat *)); 322. boolean (*_bfd_update_armap_timestamp) PARAMS ((bfd *)); 323. 324. {* Entry points used for symbols. *} 325.#define BFD_JUMP_TABLE_SYMBOLS(NAME) \ 326.CONCAT2 (NAME,_get_symtab_upper_bound), \ 327.CONCAT2 (NAME,_get_symtab), \ 328.CONCAT2 (NAME,_make_empty_symbol), \ 329.CONCAT2 (NAME,_print_symbol), \ 330.CONCAT2 (NAME,_get_symbol_info), \ 331.CONCAT2 (NAME,_bfd_is_local_label_name), \ 332.CONCAT2 (NAME,_get_lineno), \ 333.CONCAT2 (NAME,_find_nearest_line), \ 334.CONCAT2 (NAME,_bfd_make_debug_symbol), \ 335.CONCAT2 (NAME,_read_minisymbols), \ 336.CONCAT2 (NAME,_minisymbol_to_symbol) 337. long (*_bfd_get_symtab_upper_bound) PARAMS ((bfd *)); 338. long (*_bfd_canonicalize_symtab) PARAMS ((bfd *, 339. struct symbol_cache_entry **)); 340. struct symbol_cache_entry * 341. (*_bfd_make_empty_symbol) PARAMS ((bfd *)); 342. void (*_bfd_print_symbol) PARAMS ((bfd *, PTR, 343. struct symbol_cache_entry *, 344. bfd_print_symbol_type)); 345.#define bfd_print_symbol(b,p,s,e) BFD_SEND(b, _bfd_print_symbol, (b,p,s,e)) 346. void (*_bfd_get_symbol_info) PARAMS ((bfd *, 347. struct symbol_cache_entry *, 348. symbol_info *)); 349.#define bfd_get_symbol_info(b,p,e) BFD_SEND(b, _bfd_get_symbol_info, (b,p,e)) 350. boolean (*_bfd_is_local_label_name) PARAMS ((bfd *, const char *)); 351. 352. alent * (*_get_lineno) PARAMS ((bfd *, struct symbol_cache_entry *)); 353. boolean (*_bfd_find_nearest_line) 354. PARAMS ((bfd *, struct sec *, struct symbol_cache_entry **, bfd_vma, 355. const char **, const char **, unsigned int *)); 356. {* Back-door to allow format-aware applications to create debug symbols 357. while using BFD for everything else. Currently used by the assembler 358. when creating COFF files. *} 359. asymbol *(*_bfd_make_debug_symbol) PARAMS ((bfd *, void *, 360. unsigned long size)); 361.#define bfd_read_minisymbols(b, d, m, s) \ 362. BFD_SEND (b, _read_minisymbols, (b, d, m, s)) 363. long (*_read_minisymbols) PARAMS ((bfd *, boolean, PTR *, 364. unsigned int *)); 365.#define bfd_minisymbol_to_symbol(b, d, m, f) \ 366. BFD_SEND (b, _minisymbol_to_symbol, (b, d, m, f)) 367. asymbol *(*_minisymbol_to_symbol) PARAMS ((bfd *, boolean, const PTR, 368. asymbol *)); 369. 370. {* Routines for relocs. *} 371.#define BFD_JUMP_TABLE_RELOCS(NAME) \ 372.CONCAT2 (NAME,_get_reloc_upper_bound), \ 373.CONCAT2 (NAME,_canonicalize_reloc), \ 374.CONCAT2 (NAME,_bfd_reloc_type_lookup) 375. long (*_get_reloc_upper_bound) PARAMS ((bfd *, sec_ptr)); 376. long (*_bfd_canonicalize_reloc) PARAMS ((bfd *, sec_ptr, arelent **, 377. struct symbol_cache_entry **)); 378. {* See documentation on reloc types. *} 379. reloc_howto_type * 380. (*reloc_type_lookup) PARAMS ((bfd *, bfd_reloc_code_real_type)); 381. 382. {* Routines used when writing an object file. *} 383.#define BFD_JUMP_TABLE_WRITE(NAME) \ 384.CONCAT2 (NAME,_set_arch_mach), \ 385.CONCAT2 (NAME,_set_section_contents) 386. boolean (*_bfd_set_arch_mach) PARAMS ((bfd *, enum bfd_architecture, 387. unsigned long)); 388. boolean (*_bfd_set_section_contents) PARAMS ((bfd *, sec_ptr, PTR, 389. file_ptr, bfd_size_type)); 390. 391. {* Routines used by the linker. *} 392.#define BFD_JUMP_TABLE_LINK(NAME) \ 393.CONCAT2 (NAME,_sizeof_headers), \ 394.CONCAT2 (NAME,_bfd_get_relocated_section_contents), \ 395.CONCAT2 (NAME,_bfd_relax_section), \ 396.CONCAT2 (NAME,_bfd_link_hash_table_create), \ 397.CONCAT2 (NAME,_bfd_link_hash_table_free), \ 398.CONCAT2 (NAME,_bfd_link_add_symbols), \ 399.CONCAT2 (NAME,_bfd_link_just_syms), \ 400.CONCAT2 (NAME,_bfd_final_link), \ 401.CONCAT2 (NAME,_bfd_link_split_section), \ 402.CONCAT2 (NAME,_bfd_gc_sections), \ 403.CONCAT2 (NAME,_bfd_merge_sections), \ 404.CONCAT2 (NAME,_bfd_discard_group) 405. int (*_bfd_sizeof_headers) PARAMS ((bfd *, boolean)); 406. bfd_byte *(*_bfd_get_relocated_section_contents) 407. PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, 408. bfd_byte *, boolean, struct symbol_cache_entry **)); 409. 410. boolean (*_bfd_relax_section) 411. PARAMS ((bfd *, struct sec *, struct bfd_link_info *, boolean *)); 412. 413. {* Create a hash table for the linker. Different backends store 414. different information in this table. *} 415. struct bfd_link_hash_table *(*_bfd_link_hash_table_create) PARAMS ((bfd *)); 416. 417. {* Release the memory associated with the linker hash table. *} 418. void (*_bfd_link_hash_table_free) PARAMS ((struct bfd_link_hash_table *)); 419. 420. {* Add symbols from this object file into the hash table. *} 421. boolean (*_bfd_link_add_symbols) PARAMS ((bfd *, struct bfd_link_info *)); 422. 423. {* Indicate that we are only retrieving symbol values from this section. *} 424. void (*_bfd_link_just_syms) PARAMS ((asection *, struct bfd_link_info *)); 425. 426. {* Do a link based on the link_order structures attached to each 427. section of the BFD. *} 428. boolean (*_bfd_final_link) PARAMS ((bfd *, struct bfd_link_info *)); 429. 430. {* Should this section be split up into smaller pieces during linking. *} 431. boolean (*_bfd_link_split_section) PARAMS ((bfd *, struct sec *)); 432. 433. {* Remove sections that are not referenced from the output. *} 434. boolean (*_bfd_gc_sections) PARAMS ((bfd *, struct bfd_link_info *)); 435. 436. {* Attempt to merge SEC_MERGE sections. *} 437. boolean (*_bfd_merge_sections) PARAMS ((bfd *, struct bfd_link_info *)); 438. 439. {* Discard members of a group. *} 440. boolean (*_bfd_discard_group) PARAMS ((bfd *, struct sec *)); 441. 442. {* Routines to handle dynamic symbols and relocs. *} 443.#define BFD_JUMP_TABLE_DYNAMIC(NAME) \ 444.CONCAT2 (NAME,_get_dynamic_symtab_upper_bound), \ 445.CONCAT2 (NAME,_canonicalize_dynamic_symtab), \ 446.CONCAT2 (NAME,_get_dynamic_reloc_upper_bound), \ 447.CONCAT2 (NAME,_canonicalize_dynamic_reloc) 448. {* Get the amount of memory required to hold the dynamic symbols. *} 449. long (*_bfd_get_dynamic_symtab_upper_bound) PARAMS ((bfd *)); 450. {* Read in the dynamic symbols. *} 451. long (*_bfd_canonicalize_dynamic_symtab) 452. PARAMS ((bfd *, struct symbol_cache_entry **)); 453. {* Get the amount of memory required to hold the dynamic relocs. *} 454. long (*_bfd_get_dynamic_reloc_upper_bound) PARAMS ((bfd *)); 455. {* Read in the dynamic relocs. *} 456. long (*_bfd_canonicalize_dynamic_reloc) 457. PARAMS ((bfd *, arelent **, struct symbol_cache_entry **)); 458. 459 460A pointer to an alternative bfd_target in case the current one is not 461satisfactory. This can happen when the target cpu supports both big 462and little endian code, and target chosen by the linker has the wrong 463endianness. The function open_output() in ld/ldlang.c uses this field 464to find an alternative output format that is suitable. 465 466. {* Opposite endian version of this target. *} 467. const struct bfd_target * alternative_target; 468. 469 470. {* Data for use by back-end routines, which isn't 471. generic enough to belong in this structure. *} 472. PTR backend_data; 473. 474.} bfd_target; 475. 476*/ 477 478/* All known xvecs (even those that don't compile on all systems). 479 Alphabetized for easy reference. 480 They are listed a second time below, since 481 we can't intermix extern's and initializers. */ 482extern const bfd_target a29kcoff_big_vec; 483extern const bfd_target a_out_adobe_vec; 484extern const bfd_target aix5coff64_vec; 485extern const bfd_target aout0_big_vec; 486extern const bfd_target aout_arm_big_vec; 487extern const bfd_target aout_arm_little_vec; 488extern const bfd_target aout_mips_big_vec; 489extern const bfd_target aout_mips_little_vec; 490extern const bfd_target apollocoff_vec; 491extern const bfd_target arm_epoc_pe_big_vec; 492extern const bfd_target arm_epoc_pe_little_vec; 493extern const bfd_target arm_epoc_pei_big_vec; 494extern const bfd_target arm_epoc_pei_little_vec; 495extern const bfd_target armcoff_big_vec; 496extern const bfd_target armcoff_little_vec; 497extern const bfd_target armnetbsd_vec; 498extern const bfd_target armpe_big_vec; 499extern const bfd_target armpe_little_vec; 500extern const bfd_target armpei_big_vec; 501extern const bfd_target armpei_little_vec; 502extern const bfd_target b_out_vec_big_host; 503extern const bfd_target b_out_vec_little_host; 504extern const bfd_target bfd_efi_app_ia32_vec; 505extern const bfd_target bfd_efi_app_ia64_vec; 506extern const bfd_target bfd_elf32_avr_vec; 507extern const bfd_target bfd_elf32_big_generic_vec; 508extern const bfd_target bfd_elf32_bigarc_vec; 509extern const bfd_target bfd_elf32_bigarm_oabi_vec; 510extern const bfd_target bfd_elf32_bigarm_vec; 511extern const bfd_target bfd_elf32_bigmips_vec; 512extern const bfd_target bfd_elf32_cris_vec; 513extern const bfd_target bfd_elf32_d10v_vec; 514extern const bfd_target bfd_elf32_d30v_vec; 515extern const bfd_target bfd_elf32_dlx_big_vec; 516extern const bfd_target bfd_elf32_fr30_vec; 517extern const bfd_target bfd_elf32_frv_vec; 518extern const bfd_target bfd_elf32_h8300_vec; 519extern const bfd_target bfd_elf32_hppa_linux_vec; 520extern const bfd_target bfd_elf32_hppa_vec; 521extern const bfd_target bfd_elf32_i370_vec; 522extern const bfd_target bfd_elf32_i386_freebsd_vec; 523extern const bfd_target bfd_elf32_i386_vec;
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787 &bfd_elf32_i860_little_vec, 788 &bfd_elf32_i860_vec, 789 &bfd_elf32_i960_vec, 790#if 0 791 &bfd_elf32_ia64_big_vec, 792#endif 793 &bfd_elf32_ia64_hpux_big_vec, 794 &bfd_elf32_little_generic_vec, 795 &bfd_elf32_littlearc_vec, 796 &bfd_elf32_littlearm_oabi_vec, 797 &bfd_elf32_littlearm_vec, 798 &bfd_elf32_littlemips_vec, 799 &bfd_elf32_m32r_vec, 800 &bfd_elf32_m68hc11_vec, 801 &bfd_elf32_m68hc12_vec, 802 &bfd_elf32_m68k_vec, 803 &bfd_elf32_m88k_vec, 804 &bfd_elf32_mcore_big_vec, 805 &bfd_elf32_mcore_little_vec, 806 &bfd_elf32_mn10200_vec, 807 &bfd_elf32_mn10300_vec, 808 &bfd_elf32_openrisc_vec, 809 &bfd_elf32_or32_big_vec, 810 &bfd_elf32_pj_vec, 811 &bfd_elf32_pjl_vec, 812 &bfd_elf32_powerpc_vec, 813 &bfd_elf32_powerpcle_vec, 814 &bfd_elf32_s390_vec, 815 &bfd_elf32_sh_vec, 816 &bfd_elf32_shblin_vec, 817 &bfd_elf32_shl_vec, 818 &bfd_elf32_shlin_vec, 819 &bfd_elf32_shlnbsd_vec, 820 &bfd_elf32_shnbsd_vec, 821#ifdef BFD64 822 &bfd_elf32_sh64_vec, 823 &bfd_elf32_sh64l_vec, 824 &bfd_elf32_sh64lnbsd_vec, 825 &bfd_elf32_sh64nbsd_vec, 826#endif 827 &bfd_elf32_sparc_vec, 828 &bfd_elf32_tradbigmips_vec, 829 &bfd_elf32_tradlittlemips_vec, 830 &bfd_elf32_us_cris_vec, 831 &bfd_elf32_v850_vec, 832 &bfd_elf32_vax_vec, 833 &bfd_elf32_xstormy16_vec, 834#ifdef BFD64 835 &bfd_elf64_alpha_freebsd_vec, 836 &bfd_elf64_alpha_vec, 837 &bfd_elf64_big_generic_vec, 838 &bfd_elf64_bigmips_vec, 839 &bfd_elf64_hppa_linux_vec, 840 &bfd_elf64_hppa_vec, 841 &bfd_elf64_ia64_aix_big_vec, 842 &bfd_elf64_ia64_aix_little_vec, 843 &bfd_elf64_ia64_big_vec, 844 &bfd_elf64_ia64_hpux_big_vec, 845 &bfd_elf64_ia64_little_vec, 846 &bfd_elf64_little_generic_vec, 847 &bfd_elf64_littlemips_vec, 848 &bfd_elf64_mmix_vec, 849 &bfd_elf64_powerpc_vec, 850 &bfd_elf64_powerpcle_vec, 851 &bfd_elf64_s390_vec, 852 &bfd_elf64_sh64_vec, 853 &bfd_elf64_sh64l_vec, 854 &bfd_elf64_sh64lnbsd_vec, 855 &bfd_elf64_sh64nbsd_vec, 856#if 0 857 &bfd_elf64_sparc_vec, 858#endif 859 &bfd_elf64_tradbigmips_vec, 860 &bfd_elf64_tradlittlemips_vec, 861 &bfd_elf64_x86_64_vec, 862 &bfd_mmo_vec, 863#endif 864 &bfd_powerpc_pe_vec, 865 &bfd_powerpc_pei_vec, 866 &bfd_powerpcle_pe_vec, 867 &bfd_powerpcle_pei_vec, 868 &cris_aout_vec, 869#ifdef BFD64 870 &demo_64_vec, /* Only compiled if host has long-long support */ 871#endif 872 &ecoff_big_vec, 873 &ecoff_biglittle_vec, 874 &ecoff_little_vec, 875#ifdef BFD64 876 &ecoffalpha_little_vec, 877#endif 878 &go32coff_vec, 879 &go32stubbedcoff_vec, 880 &h8300coff_vec, 881 &h8500coff_vec, 882#if 0 883 /* Since a.out files lack decent magic numbers, no way to recognize 884 which kind of a.out file it is. */ 885 &host_aout_vec, 886 /* Clashes with sunos_big_vec magic no. */ 887 &hp300bsd_vec, 888#endif 889 &hp300hpux_vec, 890 &i386aout_vec, 891 &i386bsd_vec, 892 &i386coff_vec, 893#if 0 894 &i386dynix_vec, 895#endif 896 &i386freebsd_vec, 897#if 0 898 /* Since a.out files lack decent magic numbers, no way to recognize 899 which kind of a.out file it is. */ 900 &i386linux_vec, 901#endif 902 &i386lynx_aout_vec, 903 &i386lynx_coff_vec, 904#if 0 905 /* No distinguishing features for Mach 3 executables. */ 906 &i386mach3_vec, 907#endif 908 &i386msdos_vec, 909 &i386netbsd_vec, 910 &i386os9k_vec, 911 &i386pe_vec, 912 &i386pei_vec, 913 &i860coff_vec, 914 &icoff_big_vec, 915 &icoff_little_vec, 916 &ieee_vec, 917#if 0 918 &m68k4knetbsd_vec, 919 &m68kaux_coff_vec, 920#endif 921 &m68kcoff_vec, 922 &m68kcoffun_vec, 923#if 0 924 /* Since a.out files lack decent magic numbers, no way to recognize 925 which kind of a.out file it is. */ 926 &m68klinux_vec, 927#endif 928 &m68klynx_aout_vec, 929 &m68klynx_coff_vec, 930 &m68knetbsd_vec, 931 &m68ksysvcoff_vec, 932 &m88kbcs_vec, 933 &m88kmach3_vec, 934 &mcore_pe_big_vec, 935 &mcore_pe_little_vec, 936 &mcore_pei_big_vec, 937 &mcore_pei_little_vec, 938 &mipslpe_vec, 939 &mipslpei_vec, 940 &newsos3_vec, 941#ifdef BFD64 942 &nlm32_alpha_vec, 943#endif 944 &nlm32_i386_vec, 945 &nlm32_powerpc_vec, 946 &nlm32_sparc_vec, 947#if 0 948 /* We have no oasys tools anymore, so we can't test any of this 949 anymore. If you want to test the stuff yourself, go ahead... 950 steve@cygnus.com 951 Worse, since there is no magic number for archives, there 952 can be annoying target mis-matches. */ 953 &oasys_vec, 954#endif 955 /* Entry for the OpenRISC family. */ 956 &or32coff_big_vec, 957 958 &pc532machaout_vec, 959 &pc532netbsd_vec, 960 &pdp11_aout_vec, 961#if 0 962 /* This has the same magic number as RS/6000. */ 963 &pmac_xcoff_vec, 964#endif 965 &ppcboot_vec, 966#if 0 967 /* We have no way of distinguishing these from other a.out variants */ 968 &riscix_vec, 969#endif 970#ifdef BFD64 971 &rs6000coff64_vec, 972#endif 973 &rs6000coff_vec, 974 &shcoff_small_vec, 975 &shcoff_vec, 976 &shlcoff_small_vec, 977 &shlcoff_vec, 978 &shlpe_vec, 979 &shlpei_vec, 980#if defined (HOST_HPPAHPUX) || defined (HOST_HPPABSD) || defined (HOST_HPPAOSF) 981 &som_vec, 982#endif 983 &sparccoff_vec, 984 &sparcle_aout_vec, 985 &sparclinux_vec, 986 &sparclynx_aout_vec, 987 &sparclynx_coff_vec, 988 &sparcnetbsd_vec, 989 &sunos_big_vec, 990 &tic30_aout_vec, 991 &tic30_coff_vec, 992 &tic54x_coff0_beh_vec, 993 &tic54x_coff0_vec, 994 &tic54x_coff1_beh_vec, 995 &tic54x_coff1_vec, 996 &tic54x_coff2_beh_vec, 997 &tic54x_coff2_vec, 998 &tic80coff_vec, 999 &vaxbsd_vec, 1000 &vaxnetbsd_vec, 1001 &vax1knetbsd_vec, 1002 &versados_vec, 1003#ifdef BFD64 1004 &vms_alpha_vec, 1005#endif 1006 &vms_vax_vec, 1007 &w65_vec, 1008 &we32kcoff_vec, 1009 &z8kcoff_vec, 1010#endif /* not SELECT_VECS */ 1011 1012/* Always support S-records, for convenience. */ 1013 &srec_vec, 1014 &symbolsrec_vec, 1015/* And tekhex */ 1016 &tekhex_vec, 1017/* Likewise for binary output. */ 1018 &binary_vec, 1019/* Likewise for ihex. */ 1020 &ihex_vec, 1021 1022/* Add any required traditional-core-file-handler. */ 1023 1024#ifdef AIX386_CORE 1025 &aix386_core_vec, 1026#endif 1027#if 0 1028 /* We don't include cisco_core_*_vec. Although it has a magic number, 1029 the magic number isn't at the beginning of the file, and thus 1030 might spuriously match other kinds of files. */ 1031 &cisco_core_big_vec, 1032 &cisco_core_little_vec, 1033#endif 1034#ifdef HPPABSD_CORE 1035 &hppabsd_core_vec, 1036#endif 1037#ifdef HPUX_CORE 1038 &hpux_core_vec, 1039#endif 1040#ifdef IRIX_CORE 1041 &irix_core_vec, 1042#endif 1043#ifdef NETBSD_CORE 1044 &netbsd_core_vec, 1045#endif 1046#ifdef OSF_CORE 1047 &osf_core_vec, 1048#endif 1049#ifdef PTRACE_CORE 1050 &ptrace_core_vec, 1051#endif 1052#ifdef SCO5_CORE 1053 &sco5_core_vec, 1054#endif 1055#ifdef TRAD_CORE 1056 &trad_core_vec, 1057#endif 1058 1059 NULL /* end of list marker */ 1060}; 1061const bfd_target * const *bfd_target_vector = _bfd_target_vector; 1062 1063/* bfd_default_vector[0] contains either the address of the default vector, 1064 if there is one, or zero if there isn't. */ 1065 1066const bfd_target *bfd_default_vector[] = { 1067#ifdef DEFAULT_VECTOR 1068 &DEFAULT_VECTOR, 1069#endif 1070 NULL 1071}; 1072 1073/* When there is an ambiguous match, bfd_check_format_matches puts the 1074 names of the matching targets in an array. This variable is the maximum 1075 number of entries that the array could possibly need. */ 1076const size_t _bfd_target_vector_entries = sizeof (_bfd_target_vector)/sizeof (*_bfd_target_vector); 1077 1078/* This array maps configuration triplets onto BFD vectors. */ 1079 1080struct targmatch 1081{ 1082 /* The configuration triplet. */ 1083 const char *triplet; 1084 /* The BFD vector. If this is NULL, then the vector is found by 1085 searching forward for the next structure with a non NULL vector 1086 field. */ 1087 const bfd_target *vector; 1088}; 1089 1090/* targmatch.h is built by Makefile out of config.bfd. */ 1091static const struct targmatch bfd_target_match[] = { 1092#include "targmatch.h" 1093 { NULL, NULL } 1094}; 1095 1096static const bfd_target *find_target PARAMS ((const char *)); 1097 1098/* Find a target vector, given a name or configuration triplet. */ 1099 1100static const bfd_target * 1101find_target (name) 1102 const char *name; 1103{ 1104 const bfd_target * const *target; 1105 const struct targmatch *match; 1106 1107 for (target = &bfd_target_vector[0]; *target != NULL; target++) 1108 if (strcmp (name, (*target)->name) == 0) 1109 return *target; 1110 1111 /* If we couldn't match on the exact name, try matching on the 1112 configuration triplet. FIXME: We should run the triplet through 1113 config.sub first, but that is hard. */ 1114 for (match = &bfd_target_match[0]; match->triplet != NULL; match++) 1115 { 1116 if (fnmatch (match->triplet, name, 0) == 0) 1117 { 1118 while (match->vector == NULL) 1119 ++match; 1120 return match->vector; 1121 break; 1122 } 1123 } 1124 1125 bfd_set_error (bfd_error_invalid_target); 1126 return NULL; 1127} 1128 1129/* 1130FUNCTION 1131 bfd_set_default_target 1132 1133SYNOPSIS 1134 boolean bfd_set_default_target (const char *name); 1135 1136DESCRIPTION 1137 Set the default target vector to use when recognizing a BFD. 1138 This takes the name of the target, which may be a BFD target 1139 name or a configuration triplet. 1140*/ 1141 1142boolean 1143bfd_set_default_target (name) 1144 const char *name; 1145{ 1146 const bfd_target *target; 1147 1148 if (bfd_default_vector[0] != NULL 1149 && strcmp (name, bfd_default_vector[0]->name) == 0) 1150 return true; 1151 1152 target = find_target (name); 1153 if (target == NULL) 1154 return false; 1155 1156 bfd_default_vector[0] = target; 1157 return true; 1158} 1159 1160/* 1161FUNCTION 1162 bfd_find_target 1163 1164SYNOPSIS 1165 const bfd_target *bfd_find_target(const char *target_name, bfd *abfd); 1166 1167DESCRIPTION 1168 Return a pointer to the transfer vector for the object target 1169 named @var{target_name}. If @var{target_name} is <<NULL>>, choose the 1170 one in the environment variable <<GNUTARGET>>; if that is null or not 1171 defined, then choose the first entry in the target list. 1172 Passing in the string "default" or setting the environment 1173 variable to "default" will cause the first entry in the target 1174 list to be returned, and "target_defaulted" will be set in the 1175 BFD. This causes <<bfd_check_format>> to loop over all the 1176 targets to find the one that matches the file being read. 1177*/ 1178 1179const bfd_target * 1180bfd_find_target (target_name, abfd) 1181 const char *target_name; 1182 bfd *abfd; 1183{ 1184 const char *targname; 1185 const bfd_target *target; 1186 1187 if (target_name != NULL) 1188 targname = target_name; 1189 else 1190 targname = getenv ("GNUTARGET"); 1191 1192 /* This is safe; the vector cannot be null */ 1193 if (targname == NULL || strcmp (targname, "default") == 0) 1194 { 1195 abfd->target_defaulted = true; 1196 if (bfd_default_vector[0] != NULL) 1197 abfd->xvec = bfd_default_vector[0]; 1198 else 1199 abfd->xvec = bfd_target_vector[0]; 1200 return abfd->xvec; 1201 } 1202 1203 abfd->target_defaulted = false; 1204 1205 target = find_target (targname); 1206 if (target == NULL) 1207 return NULL; 1208 1209 abfd->xvec = target; 1210 return target; 1211} 1212 1213/* 1214FUNCTION 1215 bfd_target_list 1216 1217SYNOPSIS 1218 const char **bfd_target_list(void); 1219 1220DESCRIPTION 1221 Return a freshly malloced NULL-terminated 1222 vector of the names of all the valid BFD targets. Do not 1223 modify the names. 1224 1225*/ 1226 1227const char ** 1228bfd_target_list () 1229{ 1230 int vec_length= 0; 1231 bfd_size_type amt; 1232#if defined (HOST_HPPAHPUX) && ! defined (__STDC__) 1233 /* The native compiler on the HP9000/700 has a bug which causes it 1234 to loop endlessly when compiling this file. This avoids it. */ 1235 volatile 1236#endif 1237 const bfd_target * const *target; 1238 const char **name_list, **name_ptr; 1239 1240 for (target = &bfd_target_vector[0]; *target != NULL; target++) 1241 vec_length++; 1242 1243 amt = (vec_length + 1) * sizeof (char **); 1244 name_ptr = name_list = (const char **) bfd_zmalloc (amt); 1245 1246 if (name_list == NULL) 1247 return NULL; 1248 1249 for (target = &bfd_target_vector[0]; *target != NULL; target++)
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