1/* Generic BFD library interface and support routines. 2 Copyright (C) 1990-2017 Free Software Foundation, Inc. 3 Written by Cygnus Support. 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/* 23INODE 24typedef bfd, Error reporting, BFD front end, BFD front end 25 26SECTION 27 <<typedef bfd>> 28 29 A BFD has type <<bfd>>; objects of this type are the 30 cornerstone of any application using BFD. Using BFD 31 consists of making references though the BFD and to data in the BFD. 32 33 Here is the structure that defines the type <<bfd>>. It 34 contains the major data about the file and pointers 35 to the rest of the data. 36 37CODE_FRAGMENT 38. 39.enum bfd_direction 40. { 41. no_direction = 0, 42. read_direction = 1, 43. write_direction = 2, 44. both_direction = 3 45. }; 46. 47.enum bfd_plugin_format 48. { 49. bfd_plugin_unknown = 0, 50. bfd_plugin_yes = 1, 51. bfd_plugin_no = 2 52. }; 53. 54.struct bfd_build_id 55. { 56. bfd_size_type size; 57. bfd_byte data[1]; 58. }; 59. 60.struct bfd 61.{ 62. {* The filename the application opened the BFD with. *} 63. const char *filename; 64. 65. {* A pointer to the target jump table. *} 66. const struct bfd_target *xvec; 67. 68. {* The IOSTREAM, and corresponding IO vector that provide access 69. to the file backing the BFD. *} 70. void *iostream; 71. const struct bfd_iovec *iovec; 72. 73. {* The caching routines use these to maintain a 74. least-recently-used list of BFDs. *} 75. struct bfd *lru_prev, *lru_next; 76. 77. {* When a file is closed by the caching routines, BFD retains 78. state information on the file here... *} 79. ufile_ptr where; 80. 81. {* File modified time, if mtime_set is TRUE. *} 82. long mtime; 83. 84. {* A unique identifier of the BFD *} 85. unsigned int id; 86. 87. {* The format which belongs to the BFD. (object, core, etc.) *} 88. ENUM_BITFIELD (bfd_format) format : 3; 89. 90. {* The direction with which the BFD was opened. *} 91. ENUM_BITFIELD (bfd_direction) direction : 2; 92. 93. {* Format_specific flags. *} 94. flagword flags : 20; 95. 96. {* Values that may appear in the flags field of a BFD. These also 97. appear in the object_flags field of the bfd_target structure, where 98. they indicate the set of flags used by that backend (not all flags 99. are meaningful for all object file formats) (FIXME: at the moment, 100. the object_flags values have mostly just been copied from backend 101. to another, and are not necessarily correct). *} 102. 103.#define BFD_NO_FLAGS 0x00 104. 105. {* BFD contains relocation entries. *} 106.#define HAS_RELOC 0x01 107. 108. {* BFD is directly executable. *} 109.#define EXEC_P 0x02 110. 111. {* BFD has line number information (basically used for F_LNNO in a 112. COFF header). *} 113.#define HAS_LINENO 0x04 114. 115. {* BFD has debugging information. *} 116.#define HAS_DEBUG 0x08 117. 118. {* BFD has symbols. *} 119.#define HAS_SYMS 0x10 120. 121. {* BFD has local symbols (basically used for F_LSYMS in a COFF 122. header). *} 123.#define HAS_LOCALS 0x20 124. 125. {* BFD is a dynamic object. *} 126.#define DYNAMIC 0x40 127. 128. {* Text section is write protected (if D_PAGED is not set, this is 129. like an a.out NMAGIC file) (the linker sets this by default, but 130. clears it for -r or -N). *} 131.#define WP_TEXT 0x80 132. 133. {* BFD is dynamically paged (this is like an a.out ZMAGIC file) (the 134. linker sets this by default, but clears it for -r or -n or -N). *} 135.#define D_PAGED 0x100 136. 137. {* BFD is relaxable (this means that bfd_relax_section may be able to 138. do something) (sometimes bfd_relax_section can do something even if 139. this is not set). *} 140.#define BFD_IS_RELAXABLE 0x200 141. 142. {* This may be set before writing out a BFD to request using a 143. traditional format. For example, this is used to request that when 144. writing out an a.out object the symbols not be hashed to eliminate 145. duplicates. *} 146.#define BFD_TRADITIONAL_FORMAT 0x400 147. 148. {* This flag indicates that the BFD contents are actually cached 149. in memory. If this is set, iostream points to a bfd_in_memory 150. struct. *} 151.#define BFD_IN_MEMORY 0x800 152. 153. {* This BFD has been created by the linker and doesn't correspond 154. to any input file. *} 155.#define BFD_LINKER_CREATED 0x1000 156. 157. {* This may be set before writing out a BFD to request that it 158. be written using values for UIDs, GIDs, timestamps, etc. that 159. will be consistent from run to run. *} 160.#define BFD_DETERMINISTIC_OUTPUT 0x2000 161. 162. {* Compress sections in this BFD. *} 163.#define BFD_COMPRESS 0x4000 164. 165. {* Decompress sections in this BFD. *} 166.#define BFD_DECOMPRESS 0x8000 167. 168. {* BFD is a dummy, for plugins. *} 169.#define BFD_PLUGIN 0x10000 170. 171. {* Compress sections in this BFD with SHF_COMPRESSED from gABI. *} 172.#define BFD_COMPRESS_GABI 0x20000 173. 174. {* Convert ELF common symbol type to STT_COMMON or STT_OBJECT in this 175. BFD. *} 176.#define BFD_CONVERT_ELF_COMMON 0x40000 177. 178. {* Use the ELF STT_COMMON type in this BFD. *} 179.#define BFD_USE_ELF_STT_COMMON 0x80000 180. 181. {* Flags bits to be saved in bfd_preserve_save. *} 182.#define BFD_FLAGS_SAVED \ 183. (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS | BFD_PLUGIN \ 184. | BFD_COMPRESS_GABI | BFD_CONVERT_ELF_COMMON | BFD_USE_ELF_STT_COMMON) 185. 186. {* Flags bits which are for BFD use only. *} 187.#define BFD_FLAGS_FOR_BFD_USE_MASK \ 188. (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS | BFD_LINKER_CREATED \ 189. | BFD_PLUGIN | BFD_TRADITIONAL_FORMAT | BFD_DETERMINISTIC_OUTPUT \ 190. | BFD_COMPRESS_GABI | BFD_CONVERT_ELF_COMMON | BFD_USE_ELF_STT_COMMON) 191. 192. {* Is the file descriptor being cached? That is, can it be closed as 193. needed, and re-opened when accessed later? *} 194. unsigned int cacheable : 1; 195. 196. {* Marks whether there was a default target specified when the 197. BFD was opened. This is used to select which matching algorithm 198. to use to choose the back end. *} 199. unsigned int target_defaulted : 1; 200. 201. {* ... and here: (``once'' means at least once). *} 202. unsigned int opened_once : 1; 203. 204. {* Set if we have a locally maintained mtime value, rather than 205. getting it from the file each time. *} 206. unsigned int mtime_set : 1; 207. 208. {* Flag set if symbols from this BFD should not be exported. *} 209. unsigned int no_export : 1; 210. 211. {* Remember when output has begun, to stop strange things 212. from happening. *} 213. unsigned int output_has_begun : 1; 214. 215. {* Have archive map. *} 216. unsigned int has_armap : 1; 217. 218. {* Set if this is a thin archive. *} 219. unsigned int is_thin_archive : 1; 220. 221. {* Set if only required symbols should be added in the link hash table for 222. this object. Used by VMS linkers. *} 223. unsigned int selective_search : 1; 224. 225. {* Set if this is the linker output BFD. *} 226. unsigned int is_linker_output : 1; 227. 228. {* Set if this is the linker input BFD. *} 229. unsigned int is_linker_input : 1; 230. 231. {* If this is an input for a compiler plug-in library. *} 232. ENUM_BITFIELD (bfd_plugin_format) plugin_format : 2; 233. 234. {* Set if this is a plugin output file. *} 235. unsigned int lto_output : 1; 236. 237. {* Set to dummy BFD created when claimed by a compiler plug-in 238. library. *} 239. bfd *plugin_dummy_bfd; 240. 241. {* Currently my_archive is tested before adding origin to 242. anything. I believe that this can become always an add of 243. origin, with origin set to 0 for non archive files. *} 244. ufile_ptr origin; 245. 246. {* The origin in the archive of the proxy entry. This will 247. normally be the same as origin, except for thin archives, 248. when it will contain the current offset of the proxy in the 249. thin archive rather than the offset of the bfd in its actual 250. container. *} 251. ufile_ptr proxy_origin; 252. 253. {* A hash table for section names. *} 254. struct bfd_hash_table section_htab; 255. 256. {* Pointer to linked list of sections. *} 257. struct bfd_section *sections; 258. 259. {* The last section on the section list. *} 260. struct bfd_section *section_last; 261. 262. {* The number of sections. *} 263. unsigned int section_count; 264. 265. {* A field used by _bfd_generic_link_add_archive_symbols. This will 266. be used only for archive elements. *} 267. int archive_pass; 268. 269. {* Stuff only useful for object files: 270. The start address. *} 271. bfd_vma start_address; 272. 273. {* Symbol table for output BFD (with symcount entries). 274. Also used by the linker to cache input BFD symbols. *} 275. struct bfd_symbol **outsymbols; 276. 277. {* Used for input and output. *} 278. unsigned int symcount; 279. 280. {* Used for slurped dynamic symbol tables. *} 281. unsigned int dynsymcount; 282. 283. {* Pointer to structure which contains architecture information. *} 284. const struct bfd_arch_info *arch_info; 285. 286. {* Stuff only useful for archives. *} 287. void *arelt_data; 288. struct bfd *my_archive; {* The containing archive BFD. *} 289. struct bfd *archive_next; {* The next BFD in the archive. *} 290. struct bfd *archive_head; {* The first BFD in the archive. *} 291. struct bfd *nested_archives; {* List of nested archive in a flattened 292. thin archive. *} 293. 294. union { 295. {* For input BFDs, a chain of BFDs involved in a link. *} 296. struct bfd *next; 297. {* For output BFD, the linker hash table. *} 298. struct bfd_link_hash_table *hash; 299. } link; 300. 301. {* Used by the back end to hold private data. *} 302. union 303. { 304. struct aout_data_struct *aout_data; 305. struct artdata *aout_ar_data; 306. struct _oasys_data *oasys_obj_data; 307. struct _oasys_ar_data *oasys_ar_data; 308. struct coff_tdata *coff_obj_data; 309. struct pe_tdata *pe_obj_data; 310. struct xcoff_tdata *xcoff_obj_data; 311. struct ecoff_tdata *ecoff_obj_data; 312. struct ieee_data_struct *ieee_data; 313. struct ieee_ar_data_struct *ieee_ar_data; 314. struct srec_data_struct *srec_data; 315. struct verilog_data_struct *verilog_data; 316. struct ihex_data_struct *ihex_data; 317. struct tekhex_data_struct *tekhex_data; 318. struct elf_obj_tdata *elf_obj_data; 319. struct nlm_obj_tdata *nlm_obj_data; 320. struct bout_data_struct *bout_data; 321. struct mmo_data_struct *mmo_data; 322. struct sun_core_struct *sun_core_data; 323. struct sco5_core_struct *sco5_core_data; 324. struct trad_core_struct *trad_core_data; 325. struct som_data_struct *som_data; 326. struct hpux_core_struct *hpux_core_data; 327. struct hppabsd_core_struct *hppabsd_core_data; 328. struct sgi_core_struct *sgi_core_data; 329. struct lynx_core_struct *lynx_core_data; 330. struct osf_core_struct *osf_core_data; 331. struct cisco_core_struct *cisco_core_data; 332. struct versados_data_struct *versados_data; 333. struct netbsd_core_struct *netbsd_core_data; 334. struct mach_o_data_struct *mach_o_data; 335. struct mach_o_fat_data_struct *mach_o_fat_data; 336. struct plugin_data_struct *plugin_data; 337. struct bfd_pef_data_struct *pef_data; 338. struct bfd_pef_xlib_data_struct *pef_xlib_data; 339. struct bfd_sym_data_struct *sym_data; 340. void *any; 341. } 342. tdata; 343. 344. {* Used by the application to hold private data. *} 345. void *usrdata; 346. 347. {* Where all the allocated stuff under this BFD goes. This is a 348. struct objalloc *, but we use void * to avoid requiring the inclusion 349. of objalloc.h. *} 350. void *memory; 351. 352. {* For input BFDs, the build ID, if the object has one. *} 353. const struct bfd_build_id *build_id; 354.}; 355. 356.{* See note beside bfd_set_section_userdata. *} 357.static inline bfd_boolean 358.bfd_set_cacheable (bfd * abfd, bfd_boolean val) 359.{ 360. abfd->cacheable = val; 361. return TRUE; 362.} 363. 364*/ 365 366#include "sysdep.h" 367#include <stdarg.h> 368#include "bfd.h" 369#include "bfdver.h" 370#include "libiberty.h" 371#include "demangle.h" 372#include "safe-ctype.h" 373#include "bfdlink.h" 374#include "libbfd.h" 375#include "coff/internal.h" 376#include "coff/sym.h" 377#include "libcoff.h" 378#include "libecoff.h" 379#undef obj_symbols 380#include "elf-bfd.h" 381 382#ifndef EXIT_FAILURE 383#define EXIT_FAILURE 1 384#endif 385 386 387/* provide storage for subsystem, stack and heap data which may have been 388 passed in on the command line. Ld puts this data into a bfd_link_info 389 struct which ultimately gets passed in to the bfd. When it arrives, copy 390 it to the following struct so that the data will be available in coffcode.h 391 where it is needed. The typedef's used are defined in bfd.h */ 392 393/* 394INODE 395Error reporting, Miscellaneous, typedef bfd, BFD front end 396 397SECTION 398 Error reporting 399 400 Most BFD functions return nonzero on success (check their 401 individual documentation for precise semantics). On an error, 402 they call <<bfd_set_error>> to set an error condition that callers 403 can check by calling <<bfd_get_error>>. 404 If that returns <<bfd_error_system_call>>, then check 405 <<errno>>. 406 407 The easiest way to report a BFD error to the user is to 408 use <<bfd_perror>>. 409 410SUBSECTION 411 Type <<bfd_error_type>> 412 413 The values returned by <<bfd_get_error>> are defined by the 414 enumerated type <<bfd_error_type>>. 415 416CODE_FRAGMENT 417. 418.typedef enum bfd_error 419.{ 420. bfd_error_no_error = 0, 421. bfd_error_system_call, 422. bfd_error_invalid_target, 423. bfd_error_wrong_format, 424. bfd_error_wrong_object_format, 425. bfd_error_invalid_operation, 426. bfd_error_no_memory, 427. bfd_error_no_symbols, 428. bfd_error_no_armap, 429. bfd_error_no_more_archived_files, 430. bfd_error_malformed_archive, 431. bfd_error_missing_dso, 432. bfd_error_file_not_recognized, 433. bfd_error_file_ambiguously_recognized, 434. bfd_error_no_contents, 435. bfd_error_nonrepresentable_section, 436. bfd_error_no_debug_section, 437. bfd_error_bad_value, 438. bfd_error_file_truncated, 439. bfd_error_file_too_big, 440. bfd_error_on_input, 441. bfd_error_invalid_error_code 442.} 443.bfd_error_type; 444. 445*/ 446 447static bfd_error_type bfd_error = bfd_error_no_error; 448static bfd *input_bfd = NULL; 449static bfd_error_type input_error = bfd_error_no_error; 450 451const char *const bfd_errmsgs[] = 452{ 453 N_("No error"), 454 N_("System call error"), 455 N_("Invalid bfd target"), 456 N_("File in wrong format"), 457 N_("Archive object file in wrong format"), 458 N_("Invalid operation"), 459 N_("Memory exhausted"), 460 N_("No symbols"), 461 N_("Archive has no index; run ranlib to add one"), 462 N_("No more archived files"), 463 N_("Malformed archive"), 464 N_("DSO missing from command line"), 465 N_("File format not recognized"), 466 N_("File format is ambiguous"), 467 N_("Section has no contents"), 468 N_("Nonrepresentable section on output"), 469 N_("Symbol needs debug section which does not exist"), 470 N_("Bad value"), 471 N_("File truncated"), 472 N_("File too big"), 473 N_("Error reading %s: %s"), 474 N_("#<Invalid error code>") 475}; 476 477/* 478FUNCTION 479 bfd_get_error 480 481SYNOPSIS 482 bfd_error_type bfd_get_error (void); 483 484DESCRIPTION 485 Return the current BFD error condition. 486*/ 487 488bfd_error_type 489bfd_get_error (void) 490{ 491 return bfd_error; 492} 493 494/* 495FUNCTION 496 bfd_set_error 497 498SYNOPSIS 499 void bfd_set_error (bfd_error_type error_tag, ...); 500 501DESCRIPTION 502 Set the BFD error condition to be @var{error_tag}. 503 If @var{error_tag} is bfd_error_on_input, then this function 504 takes two more parameters, the input bfd where the error 505 occurred, and the bfd_error_type error. 506*/ 507 508void 509bfd_set_error (bfd_error_type error_tag, ...) 510{ 511 bfd_error = error_tag; 512 if (error_tag == bfd_error_on_input) 513 { 514 /* This is an error that occurred during bfd_close when 515 writing an archive, but on one of the input files. */ 516 va_list ap; 517 518 va_start (ap, error_tag); 519 input_bfd = va_arg (ap, bfd *); 520 input_error = (bfd_error_type) va_arg (ap, int); 521 if (input_error >= bfd_error_on_input) 522 abort (); 523 va_end (ap); 524 } 525} 526 527/* 528FUNCTION 529 bfd_errmsg 530 531SYNOPSIS 532 const char *bfd_errmsg (bfd_error_type error_tag); 533 534DESCRIPTION 535 Return a string describing the error @var{error_tag}, or 536 the system error if @var{error_tag} is <<bfd_error_system_call>>. 537*/ 538 539const char * 540bfd_errmsg (bfd_error_type error_tag) 541{ 542#ifndef errno 543 extern int errno; 544#endif 545 if (error_tag == bfd_error_on_input) 546 { 547 char *buf; 548 const char *msg = bfd_errmsg (input_error); 549 550 if (asprintf (&buf, _(bfd_errmsgs [error_tag]), input_bfd->filename, msg) 551 != -1) 552 return buf; 553 554 /* Ick, what to do on out of memory? */ 555 return msg; 556 } 557 558 if (error_tag == bfd_error_system_call) 559 return xstrerror (errno); 560 561 if (error_tag > bfd_error_invalid_error_code) 562 error_tag = bfd_error_invalid_error_code; /* sanity check */ 563 564 return _(bfd_errmsgs [error_tag]); 565} 566 567/* 568FUNCTION 569 bfd_perror 570 571SYNOPSIS 572 void bfd_perror (const char *message); 573 574DESCRIPTION 575 Print to the standard error stream a string describing the 576 last BFD error that occurred, or the last system error if 577 the last BFD error was a system call failure. If @var{message} 578 is non-NULL and non-empty, the error string printed is preceded 579 by @var{message}, a colon, and a space. It is followed by a newline. 580*/ 581 582void 583bfd_perror (const char *message) 584{ 585 fflush (stdout); 586 if (message == NULL || *message == '\0') 587 fprintf (stderr, "%s\n", bfd_errmsg (bfd_get_error ())); 588 else 589 fprintf (stderr, "%s: %s\n", message, bfd_errmsg (bfd_get_error ())); 590 fflush (stderr); 591} 592 593/* 594SUBSECTION 595 BFD error handler 596 597 Some BFD functions want to print messages describing the 598 problem. They call a BFD error handler function. This 599 function may be overridden by the program. 600 601 The BFD error handler acts like vprintf. 602 603CODE_FRAGMENT 604. 605.typedef void (*bfd_error_handler_type) (const char *, va_list); 606. 607*/ 608 609/* The program name used when printing BFD error messages. */ 610 611static const char *_bfd_error_program_name; 612 613/* This is the default routine to handle BFD error messages. 614 Like fprintf (stderr, ...), but also handles some extra format specifiers. 615 616 %A section name from section. For group components, print group name too. 617 %B file name from bfd. For archive components, prints archive too. 618 619 Note - because these two extra format specifiers require special handling 620 they are scanned for and processed in this function, before calling 621 vfprintf. This means that the *arguments* for these format specifiers 622 must be the first ones in the variable argument list, regardless of where 623 the specifiers appear in the format string. Thus for example calling 624 this function with a format string of: 625 626 "blah %s blah %A blah %d blah %B" 627 628 would involve passing the arguments as: 629 630 "blah %s blah %A blah %d blah %B", 631 asection_for_the_%A, 632 bfd_for_the_%B, 633 string_for_the_%s, 634 integer_for_the_%d); 635 */ 636 637static void 638error_handler_internal (const char *fmt, va_list ap) 639{ 640 char *bufp; 641 const char *new_fmt, *p; 642 size_t avail = 1000; 643 char buf[1000]; 644 645 /* PR 4992: Don't interrupt output being sent to stdout. */ 646 fflush (stdout); 647 648 if (_bfd_error_program_name != NULL) 649 fprintf (stderr, "%s: ", _bfd_error_program_name); 650 else 651 fprintf (stderr, "BFD: "); 652 653 new_fmt = fmt; 654 bufp = buf; 655 656 /* Reserve enough space for the existing format string. */ 657 avail -= strlen (fmt) + 1; 658 if (avail > 1000) 659 _exit (EXIT_FAILURE); 660 661 p = fmt; 662 while (1) 663 { 664 char *q; 665 size_t len, extra, trim; 666 667 p = strchr (p, '%'); 668 if (p == NULL || p[1] == '\0') 669 { 670 if (new_fmt == buf) 671 { 672 len = strlen (fmt); 673 memcpy (bufp, fmt, len + 1); 674 } 675 break; 676 } 677 678 if (p[1] == 'A' || p[1] == 'B') 679 { 680 len = p - fmt; 681 memcpy (bufp, fmt, len); 682 bufp += len; 683 fmt = p + 2; 684 new_fmt = buf; 685 686 /* If we run out of space, tough, you lose your ridiculously 687 long file or section name. It's not safe to try to alloc 688 memory here; We might be printing an out of memory message. */ 689 if (avail == 0) 690 { 691 *bufp++ = '*'; 692 *bufp++ = '*'; 693 *bufp = '\0'; 694 } 695 else 696 { 697 if (p[1] == 'B') 698 { 699 bfd *abfd = va_arg (ap, bfd *); 700 701 if (abfd == NULL) 702 /* Invoking %B with a null bfd pointer is an internal error. */ 703 abort (); 704 else if (abfd->my_archive 705 && !bfd_is_thin_archive (abfd->my_archive)) 706 snprintf (bufp, avail, "%s(%s)", 707 abfd->my_archive->filename, abfd->filename); 708 else 709 snprintf (bufp, avail, "%s", abfd->filename); 710 } 711 else 712 { 713 asection *sec = va_arg (ap, asection *); 714 bfd *abfd; 715 const char *group = NULL; 716 struct coff_comdat_info *ci; 717 718 if (sec == NULL) 719 /* Invoking %A with a null section pointer is an internal error. */ 720 abort (); 721 abfd = sec->owner; 722 if (abfd != NULL 723 && bfd_get_flavour (abfd) == bfd_target_elf_flavour 724 && elf_next_in_group (sec) != NULL 725 && (sec->flags & SEC_GROUP) == 0) 726 group = elf_group_name (sec); 727 else if (abfd != NULL 728 && bfd_get_flavour (abfd) == bfd_target_coff_flavour 729 && (ci = bfd_coff_get_comdat_section (sec->owner, 730 sec)) != NULL) 731 group = ci->name; 732 if (group != NULL) 733 snprintf (bufp, avail, "%s[%s]", sec->name, group); 734 else 735 snprintf (bufp, avail, "%s", sec->name); 736 } 737 len = strlen (bufp); 738 avail = avail - len + 2; 739 740 /* We need to replace any '%' we printed by "%%". 741 First count how many. */ 742 q = bufp; 743 bufp += len; 744 extra = 0; 745 while ((q = strchr (q, '%')) != NULL) 746 { 747 ++q; 748 ++extra; 749 } 750 751 /* If there isn't room, trim off the end of the string. */ 752 q = bufp; 753 bufp += extra; 754 if (extra > avail) 755 { 756 trim = extra - avail; 757 bufp -= trim; 758 do 759 { 760 if (*--q == '%') 761 --extra; 762 } 763 while (--trim != 0); 764 *q = '\0'; 765 avail = extra; 766 } 767 avail -= extra; 768 769 /* Now double all '%' chars, shuffling the string as we go. */ 770 while (extra != 0) 771 { 772 while ((q[extra] = *q) != '%') 773 --q; 774 q[--extra] = '%'; 775 --q; 776 } 777 } 778 } 779 p = p + 2; 780 } 781 782 vfprintf (stderr, new_fmt, ap); 783 784 /* On AIX, putc is implemented as a macro that triggers a -Wunused-value 785 warning, so use the fputc function to avoid it. */ 786 fputc ('\n', stderr); 787 fflush (stderr); 788} 789 790/* This is a function pointer to the routine which should handle BFD 791 error messages. It is called when a BFD routine encounters an 792 error for which it wants to print a message. Going through a 793 function pointer permits a program linked against BFD to intercept 794 the messages and deal with them itself. */ 795 796static bfd_error_handler_type _bfd_error_internal = error_handler_internal; 797 798void 799_bfd_error_handler (const char *fmt, ...) 800{ 801 va_list ap; 802 803 va_start (ap, fmt); 804 _bfd_error_internal (fmt, ap); 805 va_end (ap); 806} 807 808/* 809FUNCTION 810 bfd_set_error_handler 811 812SYNOPSIS 813 bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type); 814 815DESCRIPTION 816 Set the BFD error handler function. Returns the previous 817 function. 818*/ 819 820bfd_error_handler_type 821bfd_set_error_handler (bfd_error_handler_type pnew) 822{ 823 bfd_error_handler_type pold; 824 825 pold = _bfd_error_internal; 826 _bfd_error_internal = pnew; 827 return pold; 828} 829 830/* 831FUNCTION 832 bfd_set_error_program_name 833 834SYNOPSIS 835 void bfd_set_error_program_name (const char *); 836 837DESCRIPTION 838 Set the program name to use when printing a BFD error. This 839 is printed before the error message followed by a colon and 840 space. The string must not be changed after it is passed to 841 this function. 842*/ 843 844void 845bfd_set_error_program_name (const char *name) 846{ 847 _bfd_error_program_name = name; 848} 849 850/* 851SUBSECTION 852 BFD assert handler 853 854 If BFD finds an internal inconsistency, the bfd assert 855 handler is called with information on the BFD version, BFD 856 source file and line. If this happens, most programs linked 857 against BFD are expected to want to exit with an error, or mark 858 the current BFD operation as failed, so it is recommended to 859 override the default handler, which just calls 860 _bfd_error_handler and continues. 861 862CODE_FRAGMENT 863. 864.typedef void (*bfd_assert_handler_type) (const char *bfd_formatmsg, 865. const char *bfd_version, 866. const char *bfd_file, 867. int bfd_line); 868. 869*/ 870 871/* Note the use of bfd_ prefix on the parameter names above: we want to 872 show which one is the message and which is the version by naming the 873 parameters, but avoid polluting the program-using-bfd namespace as 874 the typedef is visible in the exported headers that the program 875 includes. Below, it's just for consistency. */ 876 877static void 878_bfd_default_assert_handler (const char *bfd_formatmsg, 879 const char *bfd_version, 880 const char *bfd_file, 881 int bfd_line) 882 883{ 884 _bfd_error_handler (bfd_formatmsg, bfd_version, bfd_file, bfd_line); 885} 886 887/* Similar to _bfd_error_handler, a program can decide to exit on an 888 internal BFD error. We use a non-variadic type to simplify passing 889 on parameters to other functions, e.g. _bfd_error_handler. */ 890 891static bfd_assert_handler_type _bfd_assert_handler = _bfd_default_assert_handler; 892 893/* 894FUNCTION 895 bfd_set_assert_handler 896 897SYNOPSIS 898 bfd_assert_handler_type bfd_set_assert_handler (bfd_assert_handler_type); 899 900DESCRIPTION 901 Set the BFD assert handler function. Returns the previous 902 function. 903*/ 904 905bfd_assert_handler_type 906bfd_set_assert_handler (bfd_assert_handler_type pnew) 907{ 908 bfd_assert_handler_type pold; 909 910 pold = _bfd_assert_handler; 911 _bfd_assert_handler = pnew; 912 return pold; 913} 914 915/* 916INODE 917Miscellaneous, Memory Usage, Error reporting, BFD front end 918 919SECTION 920 Miscellaneous 921 922SUBSECTION 923 Miscellaneous functions 924*/ 925 926/* 927FUNCTION 928 bfd_get_reloc_upper_bound 929 930SYNOPSIS 931 long bfd_get_reloc_upper_bound (bfd *abfd, asection *sect); 932 933DESCRIPTION 934 Return the number of bytes required to store the 935 relocation information associated with section @var{sect} 936 attached to bfd @var{abfd}. If an error occurs, return -1. 937 938*/ 939 940long 941bfd_get_reloc_upper_bound (bfd *abfd, sec_ptr asect) 942{ 943 if (abfd->format != bfd_object) 944 { 945 bfd_set_error (bfd_error_invalid_operation); 946 return -1; 947 } 948 949 return BFD_SEND (abfd, _get_reloc_upper_bound, (abfd, asect)); 950} 951 952/* 953FUNCTION 954 bfd_canonicalize_reloc 955 956SYNOPSIS 957 long bfd_canonicalize_reloc 958 (bfd *abfd, asection *sec, arelent **loc, asymbol **syms); 959 960DESCRIPTION 961 Call the back end associated with the open BFD 962 @var{abfd} and translate the external form of the relocation 963 information attached to @var{sec} into the internal canonical 964 form. Place the table into memory at @var{loc}, which has 965 been preallocated, usually by a call to 966 <<bfd_get_reloc_upper_bound>>. Returns the number of relocs, or 967 -1 on error. 968 969 The @var{syms} table is also needed for horrible internal magic 970 reasons. 971 972*/ 973long 974bfd_canonicalize_reloc (bfd *abfd, 975 sec_ptr asect, 976 arelent **location, 977 asymbol **symbols) 978{ 979 if (abfd->format != bfd_object) 980 { 981 bfd_set_error (bfd_error_invalid_operation); 982 return -1; 983 } 984 985 return BFD_SEND (abfd, _bfd_canonicalize_reloc, 986 (abfd, asect, location, symbols)); 987} 988 989/* 990FUNCTION 991 bfd_set_reloc 992 993SYNOPSIS 994 void bfd_set_reloc 995 (bfd *abfd, asection *sec, arelent **rel, unsigned int count); 996 997DESCRIPTION 998 Set the relocation pointer and count within 999 section @var{sec} to the values @var{rel} and @var{count}. 1000 The argument @var{abfd} is ignored. 1001 1002*/ 1003 1004void 1005bfd_set_reloc (bfd *ignore_abfd ATTRIBUTE_UNUSED, 1006 sec_ptr asect, 1007 arelent **location, 1008 unsigned int count) 1009{ 1010 asect->orelocation = location; 1011 asect->reloc_count = count; 1012} 1013 1014/* 1015FUNCTION 1016 bfd_set_file_flags 1017 1018SYNOPSIS 1019 bfd_boolean bfd_set_file_flags (bfd *abfd, flagword flags); 1020 1021DESCRIPTION 1022 Set the flag word in the BFD @var{abfd} to the value @var{flags}. 1023 1024 Possible errors are: 1025 o <<bfd_error_wrong_format>> - The target bfd was not of object format. 1026 o <<bfd_error_invalid_operation>> - The target bfd was open for reading. 1027 o <<bfd_error_invalid_operation>> - 1028 The flag word contained a bit which was not applicable to the 1029 type of file. E.g., an attempt was made to set the <<D_PAGED>> bit 1030 on a BFD format which does not support demand paging. 1031 1032*/ 1033 1034bfd_boolean 1035bfd_set_file_flags (bfd *abfd, flagword flags) 1036{ 1037 if (abfd->format != bfd_object) 1038 { 1039 bfd_set_error (bfd_error_wrong_format); 1040 return FALSE; 1041 } 1042 1043 if (bfd_read_p (abfd)) 1044 { 1045 bfd_set_error (bfd_error_invalid_operation); 1046 return FALSE; 1047 } 1048 1049 bfd_get_file_flags (abfd) = flags; 1050 if ((flags & bfd_applicable_file_flags (abfd)) != flags) 1051 { 1052 bfd_set_error (bfd_error_invalid_operation); 1053 return FALSE; 1054 } 1055 1056 return TRUE; 1057} 1058 1059void 1060bfd_assert (const char *file, int line) 1061{ 1062 /* xgettext:c-format */ 1063 (*_bfd_assert_handler) (_("BFD %s assertion fail %s:%d"), 1064 BFD_VERSION_STRING, file, line); 1065} 1066 1067/* A more or less friendly abort message. In libbfd.h abort is 1068 defined to call this function. */ 1069 1070void 1071_bfd_abort (const char *file, int line, const char *fn) 1072{ 1073 if (fn != NULL) 1074 _bfd_error_handler 1075 /* xgettext:c-format */ 1076 (_("BFD %s internal error, aborting at %s:%d in %s\n"), 1077 BFD_VERSION_STRING, file, line, fn); 1078 else 1079 _bfd_error_handler 1080 /* xgettext:c-format */ 1081 (_("BFD %s internal error, aborting at %s:%d\n"), 1082 BFD_VERSION_STRING, file, line); 1083 _bfd_error_handler (_("Please report this bug.\n")); 1084 _exit (EXIT_FAILURE); 1085} 1086 1087/* 1088FUNCTION 1089 bfd_get_arch_size 1090 1091SYNOPSIS 1092 int bfd_get_arch_size (bfd *abfd); 1093 1094DESCRIPTION 1095 Returns the normalized architecture address size, in bits, as 1096 determined by the object file's format. By normalized, we mean 1097 either 32 or 64. For ELF, this information is included in the 1098 header. Use bfd_arch_bits_per_address for number of bits in 1099 the architecture address. 1100 1101RETURNS 1102 Returns the arch size in bits if known, <<-1>> otherwise. 1103*/ 1104 1105int 1106bfd_get_arch_size (bfd *abfd) 1107{ 1108 if (abfd->xvec->flavour == bfd_target_elf_flavour) 1109 return get_elf_backend_data (abfd)->s->arch_size; 1110 1111 return bfd_arch_bits_per_address (abfd) > 32 ? 64 : 32; 1112} 1113 1114/* 1115FUNCTION 1116 bfd_get_sign_extend_vma 1117 1118SYNOPSIS 1119 int bfd_get_sign_extend_vma (bfd *abfd); 1120 1121DESCRIPTION 1122 Indicates if the target architecture "naturally" sign extends 1123 an address. Some architectures implicitly sign extend address 1124 values when they are converted to types larger than the size 1125 of an address. For instance, bfd_get_start_address() will 1126 return an address sign extended to fill a bfd_vma when this is 1127 the case. 1128 1129RETURNS 1130 Returns <<1>> if the target architecture is known to sign 1131 extend addresses, <<0>> if the target architecture is known to 1132 not sign extend addresses, and <<-1>> otherwise. 1133*/ 1134 1135int 1136bfd_get_sign_extend_vma (bfd *abfd) 1137{ 1138 char *name; 1139 1140 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) 1141 return get_elf_backend_data (abfd)->sign_extend_vma; 1142 1143 name = bfd_get_target (abfd); 1144 1145 /* Return a proper value for DJGPP & PE COFF. 1146 This function is required for DWARF2 support, but there is 1147 no place to store this information in the COFF back end. 1148 Should enough other COFF targets add support for DWARF2, 1149 a place will have to be found. Until then, this hack will do. */ 1150 if (CONST_STRNEQ (name, "coff-go32") 1151 || strcmp (name, "pe-i386") == 0 1152 || strcmp (name, "pei-i386") == 0 1153 || strcmp (name, "pe-x86-64") == 0 1154 || strcmp (name, "pei-x86-64") == 0 1155 || strcmp (name, "pe-arm-wince-little") == 0 1156 || strcmp (name, "pei-arm-wince-little") == 0 1157 || strcmp (name, "aixcoff-rs6000") == 0) 1158 return 1; 1159 1160 if (CONST_STRNEQ (name, "mach-o")) 1161 return 0; 1162 1163 bfd_set_error (bfd_error_wrong_format); 1164 return -1; 1165} 1166 1167/* 1168FUNCTION 1169 bfd_set_start_address 1170 1171SYNOPSIS 1172 bfd_boolean bfd_set_start_address (bfd *abfd, bfd_vma vma); 1173 1174DESCRIPTION 1175 Make @var{vma} the entry point of output BFD @var{abfd}. 1176 1177RETURNS 1178 Returns <<TRUE>> on success, <<FALSE>> otherwise. 1179*/ 1180 1181bfd_boolean 1182bfd_set_start_address (bfd *abfd, bfd_vma vma) 1183{ 1184 abfd->start_address = vma; 1185 return TRUE; 1186} 1187 1188/* 1189FUNCTION 1190 bfd_get_gp_size 1191 1192SYNOPSIS 1193 unsigned int bfd_get_gp_size (bfd *abfd); 1194 1195DESCRIPTION 1196 Return the maximum size of objects to be optimized using the GP 1197 register under MIPS ECOFF. This is typically set by the <<-G>> 1198 argument to the compiler, assembler or linker. 1199*/ 1200 1201unsigned int 1202bfd_get_gp_size (bfd *abfd) 1203{ 1204 if (abfd->format == bfd_object) 1205 { 1206 if (abfd->xvec->flavour == bfd_target_ecoff_flavour) 1207 return ecoff_data (abfd)->gp_size; 1208 else if (abfd->xvec->flavour == bfd_target_elf_flavour) 1209 return elf_gp_size (abfd); 1210 } 1211 return 0; 1212} 1213 1214/* 1215FUNCTION 1216 bfd_set_gp_size 1217 1218SYNOPSIS 1219 void bfd_set_gp_size (bfd *abfd, unsigned int i); 1220 1221DESCRIPTION 1222 Set the maximum size of objects to be optimized using the GP 1223 register under ECOFF or MIPS ELF. This is typically set by 1224 the <<-G>> argument to the compiler, assembler or linker. 1225*/ 1226 1227void 1228bfd_set_gp_size (bfd *abfd, unsigned int i) 1229{ 1230 /* Don't try to set GP size on an archive or core file! */ 1231 if (abfd->format != bfd_object) 1232 return; 1233 1234 if (abfd->xvec->flavour == bfd_target_ecoff_flavour) 1235 ecoff_data (abfd)->gp_size = i; 1236 else if (abfd->xvec->flavour == bfd_target_elf_flavour) 1237 elf_gp_size (abfd) = i; 1238} 1239 1240/* Get the GP value. This is an internal function used by some of the 1241 relocation special_function routines on targets which support a GP 1242 register. */ 1243 1244bfd_vma 1245_bfd_get_gp_value (bfd *abfd) 1246{ 1247 if (! abfd) 1248 return 0; 1249 if (abfd->format != bfd_object) 1250 return 0; 1251 1252 if (abfd->xvec->flavour == bfd_target_ecoff_flavour) 1253 return ecoff_data (abfd)->gp; 1254 else if (abfd->xvec->flavour == bfd_target_elf_flavour) 1255 return elf_gp (abfd); 1256 1257 return 0; 1258} 1259 1260/* Set the GP value. */ 1261 1262void 1263_bfd_set_gp_value (bfd *abfd, bfd_vma v) 1264{ 1265 if (! abfd) 1266 abort (); 1267 if (abfd->format != bfd_object) 1268 return; 1269 1270 if (abfd->xvec->flavour == bfd_target_ecoff_flavour) 1271 ecoff_data (abfd)->gp = v; 1272 else if (abfd->xvec->flavour == bfd_target_elf_flavour) 1273 elf_gp (abfd) = v; 1274} 1275 1276/* 1277FUNCTION 1278 bfd_scan_vma 1279 1280SYNOPSIS 1281 bfd_vma bfd_scan_vma (const char *string, const char **end, int base); 1282 1283DESCRIPTION 1284 Convert, like <<strtoul>>, a numerical expression 1285 @var{string} into a <<bfd_vma>> integer, and return that integer. 1286 (Though without as many bells and whistles as <<strtoul>>.) 1287 The expression is assumed to be unsigned (i.e., positive). 1288 If given a @var{base}, it is used as the base for conversion. 1289 A base of 0 causes the function to interpret the string 1290 in hex if a leading "0x" or "0X" is found, otherwise 1291 in octal if a leading zero is found, otherwise in decimal. 1292 1293 If the value would overflow, the maximum <<bfd_vma>> value is 1294 returned. 1295*/ 1296 1297bfd_vma 1298bfd_scan_vma (const char *string, const char **end, int base) 1299{ 1300 bfd_vma value; 1301 bfd_vma cutoff; 1302 unsigned int cutlim; 1303 int overflow; 1304 1305 /* Let the host do it if possible. */ 1306 if (sizeof (bfd_vma) <= sizeof (unsigned long)) 1307 return strtoul (string, (char **) end, base); 1308 1309#ifdef HAVE_STRTOULL 1310 if (sizeof (bfd_vma) <= sizeof (unsigned long long)) 1311 return strtoull (string, (char **) end, base); 1312#endif 1313 1314 if (base == 0) 1315 { 1316 if (string[0] == '0') 1317 { 1318 if ((string[1] == 'x') || (string[1] == 'X')) 1319 base = 16; 1320 else 1321 base = 8; 1322 } 1323 } 1324 1325 if ((base < 2) || (base > 36)) 1326 base = 10; 1327 1328 if (base == 16 1329 && string[0] == '0' 1330 && (string[1] == 'x' || string[1] == 'X') 1331 && ISXDIGIT (string[2])) 1332 { 1333 string += 2; 1334 } 1335 1336 cutoff = (~ (bfd_vma) 0) / (bfd_vma) base; 1337 cutlim = (~ (bfd_vma) 0) % (bfd_vma) base; 1338 value = 0; 1339 overflow = 0; 1340 while (1) 1341 { 1342 unsigned int digit; 1343 1344 digit = *string; 1345 if (ISDIGIT (digit)) 1346 digit = digit - '0'; 1347 else if (ISALPHA (digit)) 1348 digit = TOUPPER (digit) - 'A' + 10; 1349 else 1350 break; 1351 if (digit >= (unsigned int) base) 1352 break; 1353 if (value > cutoff || (value == cutoff && digit > cutlim)) 1354 overflow = 1; 1355 value = value * base + digit; 1356 ++string; 1357 } 1358 1359 if (overflow) 1360 value = ~ (bfd_vma) 0; 1361 1362 if (end != NULL) 1363 *end = string; 1364 1365 return value; 1366} 1367 1368/* 1369FUNCTION 1370 bfd_copy_private_header_data 1371 1372SYNOPSIS 1373 bfd_boolean bfd_copy_private_header_data (bfd *ibfd, bfd *obfd); 1374 1375DESCRIPTION 1376 Copy private BFD header information from the BFD @var{ibfd} to the 1377 the BFD @var{obfd}. This copies information that may require 1378 sections to exist, but does not require symbol tables. Return 1379 <<true>> on success, <<false>> on error. 1380 Possible error returns are: 1381 1382 o <<bfd_error_no_memory>> - 1383 Not enough memory exists to create private data for @var{obfd}. 1384 1385.#define bfd_copy_private_header_data(ibfd, obfd) \ 1386. BFD_SEND (obfd, _bfd_copy_private_header_data, \ 1387. (ibfd, obfd)) 1388 1389*/ 1390 1391/* 1392FUNCTION 1393 bfd_copy_private_bfd_data 1394 1395SYNOPSIS 1396 bfd_boolean bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd); 1397 1398DESCRIPTION 1399 Copy private BFD information from the BFD @var{ibfd} to the 1400 the BFD @var{obfd}. Return <<TRUE>> on success, <<FALSE>> on error. 1401 Possible error returns are: 1402 1403 o <<bfd_error_no_memory>> - 1404 Not enough memory exists to create private data for @var{obfd}. 1405 1406.#define bfd_copy_private_bfd_data(ibfd, obfd) \ 1407. BFD_SEND (obfd, _bfd_copy_private_bfd_data, \ 1408. (ibfd, obfd)) 1409 1410*/ 1411 1412/* 1413FUNCTION 1414 bfd_set_private_flags 1415 1416SYNOPSIS 1417 bfd_boolean bfd_set_private_flags (bfd *abfd, flagword flags); 1418 1419DESCRIPTION 1420 Set private BFD flag information in the BFD @var{abfd}. 1421 Return <<TRUE>> on success, <<FALSE>> on error. Possible error 1422 returns are: 1423 1424 o <<bfd_error_no_memory>> - 1425 Not enough memory exists to create private data for @var{obfd}. 1426 1427.#define bfd_set_private_flags(abfd, flags) \ 1428. BFD_SEND (abfd, _bfd_set_private_flags, (abfd, flags)) 1429 1430*/ 1431 1432/* 1433FUNCTION 1434 Other functions 1435 1436DESCRIPTION 1437 The following functions exist but have not yet been documented. 1438 1439.#define bfd_sizeof_headers(abfd, info) \ 1440. BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, info)) 1441. 1442.#define bfd_find_nearest_line(abfd, sec, syms, off, file, func, line) \ 1443. BFD_SEND (abfd, _bfd_find_nearest_line, \ 1444. (abfd, syms, sec, off, file, func, line, NULL)) 1445. 1446.#define bfd_find_nearest_line_discriminator(abfd, sec, syms, off, file, func, \ 1447. line, disc) \ 1448. BFD_SEND (abfd, _bfd_find_nearest_line, \ 1449. (abfd, syms, sec, off, file, func, line, disc)) 1450. 1451.#define bfd_find_line(abfd, syms, sym, file, line) \ 1452. BFD_SEND (abfd, _bfd_find_line, \ 1453. (abfd, syms, sym, file, line)) 1454. 1455.#define bfd_find_inliner_info(abfd, file, func, line) \ 1456. BFD_SEND (abfd, _bfd_find_inliner_info, \ 1457. (abfd, file, func, line)) 1458. 1459.#define bfd_debug_info_start(abfd) \ 1460. BFD_SEND (abfd, _bfd_debug_info_start, (abfd)) 1461. 1462.#define bfd_debug_info_end(abfd) \ 1463. BFD_SEND (abfd, _bfd_debug_info_end, (abfd)) 1464. 1465.#define bfd_debug_info_accumulate(abfd, section) \ 1466. BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section)) 1467. 1468.#define bfd_stat_arch_elt(abfd, stat) \ 1469. BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat)) 1470. 1471.#define bfd_update_armap_timestamp(abfd) \ 1472. BFD_SEND (abfd, _bfd_update_armap_timestamp, (abfd)) 1473. 1474.#define bfd_set_arch_mach(abfd, arch, mach)\ 1475. BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach)) 1476. 1477.#define bfd_relax_section(abfd, section, link_info, again) \ 1478. BFD_SEND (abfd, _bfd_relax_section, (abfd, section, link_info, again)) 1479. 1480.#define bfd_gc_sections(abfd, link_info) \ 1481. BFD_SEND (abfd, _bfd_gc_sections, (abfd, link_info)) 1482. 1483.#define bfd_lookup_section_flags(link_info, flag_info, section) \ 1484. BFD_SEND (abfd, _bfd_lookup_section_flags, (link_info, flag_info, section)) 1485. 1486.#define bfd_merge_sections(abfd, link_info) \ 1487. BFD_SEND (abfd, _bfd_merge_sections, (abfd, link_info)) 1488. 1489.#define bfd_is_group_section(abfd, sec) \ 1490. BFD_SEND (abfd, _bfd_is_group_section, (abfd, sec)) 1491. 1492.#define bfd_discard_group(abfd, sec) \ 1493. BFD_SEND (abfd, _bfd_discard_group, (abfd, sec)) 1494. 1495.#define bfd_link_hash_table_create(abfd) \ 1496. BFD_SEND (abfd, _bfd_link_hash_table_create, (abfd)) 1497. 1498.#define bfd_link_add_symbols(abfd, info) \ 1499. BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info)) 1500. 1501.#define bfd_link_just_syms(abfd, sec, info) \ 1502. BFD_SEND (abfd, _bfd_link_just_syms, (sec, info)) 1503. 1504.#define bfd_final_link(abfd, info) \ 1505. BFD_SEND (abfd, _bfd_final_link, (abfd, info)) 1506. 1507.#define bfd_free_cached_info(abfd) \ 1508. BFD_SEND (abfd, _bfd_free_cached_info, (abfd)) 1509. 1510.#define bfd_get_dynamic_symtab_upper_bound(abfd) \ 1511. BFD_SEND (abfd, _bfd_get_dynamic_symtab_upper_bound, (abfd)) 1512. 1513.#define bfd_print_private_bfd_data(abfd, file)\ 1514. BFD_SEND (abfd, _bfd_print_private_bfd_data, (abfd, file)) 1515. 1516.#define bfd_canonicalize_dynamic_symtab(abfd, asymbols) \ 1517. BFD_SEND (abfd, _bfd_canonicalize_dynamic_symtab, (abfd, asymbols)) 1518. 1519.#define bfd_get_synthetic_symtab(abfd, count, syms, dyncount, dynsyms, ret) \ 1520. BFD_SEND (abfd, _bfd_get_synthetic_symtab, (abfd, count, syms, \ 1521. dyncount, dynsyms, ret)) 1522. 1523.#define bfd_get_dynamic_reloc_upper_bound(abfd) \ 1524. BFD_SEND (abfd, _bfd_get_dynamic_reloc_upper_bound, (abfd)) 1525. 1526.#define bfd_canonicalize_dynamic_reloc(abfd, arels, asyms) \ 1527. BFD_SEND (abfd, _bfd_canonicalize_dynamic_reloc, (abfd, arels, asyms)) 1528. 1529.extern bfd_byte *bfd_get_relocated_section_contents 1530. (bfd *, struct bfd_link_info *, struct bfd_link_order *, bfd_byte *, 1531. bfd_boolean, asymbol **); 1532. 1533 1534*/ 1535 1536bfd_byte * 1537bfd_get_relocated_section_contents (bfd *abfd, 1538 struct bfd_link_info *link_info, 1539 struct bfd_link_order *link_order, 1540 bfd_byte *data, 1541 bfd_boolean relocatable, 1542 asymbol **symbols) 1543{ 1544 bfd *abfd2; 1545 bfd_byte *(*fn) (bfd *, struct bfd_link_info *, struct bfd_link_order *, 1546 bfd_byte *, bfd_boolean, asymbol **); 1547 1548 if (link_order->type == bfd_indirect_link_order) 1549 { 1550 abfd2 = link_order->u.indirect.section->owner; 1551 if (abfd2 == NULL) 1552 abfd2 = abfd; 1553 } 1554 else 1555 abfd2 = abfd; 1556 1557 fn = abfd2->xvec->_bfd_get_relocated_section_contents; 1558 1559 return (*fn) (abfd, link_info, link_order, data, relocatable, symbols); 1560} 1561 1562/* Record information about an ELF program header. */ 1563 1564bfd_boolean 1565bfd_record_phdr (bfd *abfd, 1566 unsigned long type, 1567 bfd_boolean flags_valid, 1568 flagword flags, 1569 bfd_boolean at_valid, 1570 bfd_vma at, 1571 bfd_boolean includes_filehdr, 1572 bfd_boolean includes_phdrs, 1573 unsigned int count, 1574 asection **secs) 1575{ 1576 struct elf_segment_map *m, **pm; 1577 bfd_size_type amt; 1578 1579 if (bfd_get_flavour (abfd) != bfd_target_elf_flavour) 1580 return TRUE; 1581 1582 amt = sizeof (struct elf_segment_map); 1583 amt += ((bfd_size_type) count - 1) * sizeof (asection *); 1584 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); 1585 if (m == NULL) 1586 return FALSE; 1587 1588 m->p_type = type; 1589 m->p_flags = flags; 1590 m->p_paddr = at; 1591 m->p_flags_valid = flags_valid; 1592 m->p_paddr_valid = at_valid; 1593 m->includes_filehdr = includes_filehdr; 1594 m->includes_phdrs = includes_phdrs; 1595 m->count = count; 1596 if (count > 0) 1597 memcpy (m->sections, secs, count * sizeof (asection *)); 1598 1599 for (pm = &elf_seg_map (abfd); *pm != NULL; pm = &(*pm)->next) 1600 ; 1601 *pm = m; 1602 1603 return TRUE; 1604} 1605 1606#ifdef BFD64 1607/* Return true iff this target is 32-bit. */ 1608 1609static bfd_boolean 1610is32bit (bfd *abfd) 1611{ 1612 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) 1613 { 1614 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 1615 return bed->s->elfclass == ELFCLASS32; 1616 } 1617 1618 /* For non-ELF targets, use architecture information. */ 1619 return bfd_arch_bits_per_address (abfd) <= 32; 1620} 1621#endif 1622 1623/* bfd_sprintf_vma and bfd_fprintf_vma display an address in the 1624 target's address size. */ 1625 1626void 1627bfd_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, bfd_vma value) 1628{ 1629#ifdef BFD64 1630 if (is32bit (abfd)) 1631 { 1632 sprintf (buf, "%08lx", (unsigned long) value & 0xffffffff); 1633 return; 1634 } 1635#endif 1636 sprintf_vma (buf, value); 1637} 1638 1639void 1640bfd_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value) 1641{ 1642#ifdef BFD64 1643 if (is32bit (abfd)) 1644 { 1645 fprintf ((FILE *) stream, "%08lx", (unsigned long) value & 0xffffffff); 1646 return; 1647 } 1648#endif 1649 fprintf_vma ((FILE *) stream, value); 1650} 1651 1652/* 1653FUNCTION 1654 bfd_alt_mach_code 1655 1656SYNOPSIS 1657 bfd_boolean bfd_alt_mach_code (bfd *abfd, int alternative); 1658 1659DESCRIPTION 1660 1661 When more than one machine code number is available for the 1662 same machine type, this function can be used to switch between 1663 the preferred one (alternative == 0) and any others. Currently, 1664 only ELF supports this feature, with up to two alternate 1665 machine codes. 1666*/ 1667 1668bfd_boolean 1669bfd_alt_mach_code (bfd *abfd, int alternative) 1670{ 1671 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) 1672 { 1673 int code; 1674 1675 switch (alternative) 1676 { 1677 case 0: 1678 code = get_elf_backend_data (abfd)->elf_machine_code; 1679 break; 1680 1681 case 1: 1682 code = get_elf_backend_data (abfd)->elf_machine_alt1; 1683 if (code == 0) 1684 return FALSE; 1685 break; 1686 1687 case 2: 1688 code = get_elf_backend_data (abfd)->elf_machine_alt2; 1689 if (code == 0) 1690 return FALSE; 1691 break; 1692 1693 default: 1694 return FALSE; 1695 } 1696 1697 elf_elfheader (abfd)->e_machine = code; 1698 1699 return TRUE; 1700 } 1701 1702 return FALSE; 1703} 1704 1705/* 1706FUNCTION 1707 bfd_emul_get_maxpagesize 1708 1709SYNOPSIS 1710 bfd_vma bfd_emul_get_maxpagesize (const char *); 1711 1712DESCRIPTION 1713 Returns the maximum page size, in bytes, as determined by 1714 emulation. 1715 1716RETURNS 1717 Returns the maximum page size in bytes for ELF, 0 otherwise. 1718*/ 1719 1720bfd_vma 1721bfd_emul_get_maxpagesize (const char *emul) 1722{ 1723 const bfd_target *target; 1724 1725 target = bfd_find_target (emul, NULL); 1726 if (target != NULL 1727 && target->flavour == bfd_target_elf_flavour) 1728 return xvec_get_elf_backend_data (target)->maxpagesize; 1729 1730 return 0; 1731} 1732 1733static void 1734bfd_elf_set_pagesize (const bfd_target *target, bfd_vma size, 1735 int offset, const bfd_target *orig_target) 1736{ 1737 if (target->flavour == bfd_target_elf_flavour) 1738 { 1739 const struct elf_backend_data *bed; 1740 1741 bed = xvec_get_elf_backend_data (target); 1742 *((bfd_vma *) ((char *) bed + offset)) = size; 1743 } 1744 1745 if (target->alternative_target 1746 && target->alternative_target != orig_target) 1747 bfd_elf_set_pagesize (target->alternative_target, size, offset, 1748 orig_target); 1749} 1750 1751/* 1752FUNCTION 1753 bfd_emul_set_maxpagesize 1754 1755SYNOPSIS 1756 void bfd_emul_set_maxpagesize (const char *, bfd_vma); 1757 1758DESCRIPTION 1759 For ELF, set the maximum page size for the emulation. It is 1760 a no-op for other formats. 1761 1762*/ 1763 1764void 1765bfd_emul_set_maxpagesize (const char *emul, bfd_vma size) 1766{ 1767 const bfd_target *target; 1768 1769 target = bfd_find_target (emul, NULL); 1770 if (target) 1771 bfd_elf_set_pagesize (target, size, 1772 offsetof (struct elf_backend_data, 1773 maxpagesize), target); 1774} 1775 1776/* 1777FUNCTION 1778 bfd_emul_get_commonpagesize 1779 1780SYNOPSIS 1781 bfd_vma bfd_emul_get_commonpagesize (const char *); 1782 1783DESCRIPTION 1784 Returns the common page size, in bytes, as determined by 1785 emulation. 1786 1787RETURNS 1788 Returns the common page size in bytes for ELF, 0 otherwise. 1789*/ 1790 1791bfd_vma 1792bfd_emul_get_commonpagesize (const char *emul) 1793{ 1794 const bfd_target *target; 1795 1796 target = bfd_find_target (emul, NULL); 1797 if (target != NULL 1798 && target->flavour == bfd_target_elf_flavour) 1799 return xvec_get_elf_backend_data (target)->commonpagesize; 1800 1801 return 0; 1802} 1803 1804/* 1805FUNCTION 1806 bfd_emul_set_commonpagesize 1807 1808SYNOPSIS 1809 void bfd_emul_set_commonpagesize (const char *, bfd_vma); 1810 1811DESCRIPTION 1812 For ELF, set the common page size for the emulation. It is 1813 a no-op for other formats. 1814 1815*/ 1816 1817void 1818bfd_emul_set_commonpagesize (const char *emul, bfd_vma size) 1819{ 1820 const bfd_target *target; 1821 1822 target = bfd_find_target (emul, NULL); 1823 if (target) 1824 bfd_elf_set_pagesize (target, size, 1825 offsetof (struct elf_backend_data, 1826 commonpagesize), target); 1827} 1828 1829/* 1830FUNCTION 1831 bfd_demangle 1832 1833SYNOPSIS 1834 char *bfd_demangle (bfd *, const char *, int); 1835 1836DESCRIPTION 1837 Wrapper around cplus_demangle. Strips leading underscores and 1838 other such chars that would otherwise confuse the demangler. 1839 If passed a g++ v3 ABI mangled name, returns a buffer allocated 1840 with malloc holding the demangled name. Returns NULL otherwise 1841 and on memory alloc failure. 1842*/ 1843 1844char * 1845bfd_demangle (bfd *abfd, const char *name, int options) 1846{ 1847 char *res, *alloc; 1848 const char *pre, *suf; 1849 size_t pre_len; 1850 bfd_boolean skip_lead; 1851 1852 skip_lead = (abfd != NULL 1853 && *name != '\0' 1854 && bfd_get_symbol_leading_char (abfd) == *name); 1855 if (skip_lead) 1856 ++name; 1857 1858 /* This is a hack for better error reporting on XCOFF, PowerPC64-ELF 1859 or the MS PE format. These formats have a number of leading '.'s 1860 on at least some symbols, so we remove all dots to avoid 1861 confusing the demangler. */ 1862 pre = name; 1863 while (*name == '.' || *name == '$') 1864 ++name; 1865 pre_len = name - pre; 1866 1867 /* Strip off @plt and suchlike too. */ 1868 alloc = NULL; 1869 suf = strchr (name, '@'); 1870 if (suf != NULL) 1871 { 1872 alloc = (char *) bfd_malloc (suf - name + 1); 1873 if (alloc == NULL) 1874 return NULL; 1875 memcpy (alloc, name, suf - name); 1876 alloc[suf - name] = '\0'; 1877 name = alloc; 1878 } 1879 1880 res = cplus_demangle (name, options); 1881 1882 if (alloc != NULL) 1883 free (alloc); 1884 1885 if (res == NULL) 1886 { 1887 if (skip_lead) 1888 { 1889 size_t len = strlen (pre) + 1; 1890 alloc = (char *) bfd_malloc (len); 1891 if (alloc == NULL) 1892 return NULL; 1893 memcpy (alloc, pre, len); 1894 return alloc; 1895 } 1896 return NULL; 1897 } 1898 1899 /* Put back any prefix or suffix. */ 1900 if (pre_len != 0 || suf != NULL) 1901 { 1902 size_t len; 1903 size_t suf_len; 1904 char *final; 1905 1906 len = strlen (res); 1907 if (suf == NULL) 1908 suf = res + len; 1909 suf_len = strlen (suf) + 1; 1910 final = (char *) bfd_malloc (pre_len + len + suf_len); 1911 if (final != NULL) 1912 { 1913 memcpy (final, pre, pre_len); 1914 memcpy (final + pre_len, res, len); 1915 memcpy (final + pre_len + len, suf, suf_len); 1916 } 1917 free (res); 1918 res = final; 1919 } 1920 1921 return res; 1922} 1923 1924/* 1925FUNCTION 1926 bfd_update_compression_header 1927 1928SYNOPSIS 1929 void bfd_update_compression_header 1930 (bfd *abfd, bfd_byte *contents, asection *sec); 1931 1932DESCRIPTION 1933 Set the compression header at CONTENTS of SEC in ABFD and update 1934 elf_section_flags for compression. 1935*/ 1936 1937void 1938bfd_update_compression_header (bfd *abfd, bfd_byte *contents, 1939 asection *sec) 1940{ 1941 if ((abfd->flags & BFD_COMPRESS) != 0) 1942 { 1943 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) 1944 { 1945 if ((abfd->flags & BFD_COMPRESS_GABI) != 0) 1946 { 1947 const struct elf_backend_data *bed 1948 = get_elf_backend_data (abfd); 1949 1950 /* Set the SHF_COMPRESSED bit. */ 1951 elf_section_flags (sec) |= SHF_COMPRESSED; 1952 1953 if (bed->s->elfclass == ELFCLASS32) 1954 { 1955 Elf32_External_Chdr *echdr 1956 = (Elf32_External_Chdr *) contents; 1957 bfd_put_32 (abfd, ELFCOMPRESS_ZLIB, &echdr->ch_type); 1958 bfd_put_32 (abfd, sec->size, &echdr->ch_size); 1959 bfd_put_32 (abfd, 1 << sec->alignment_power, 1960 &echdr->ch_addralign); 1961 } 1962 else 1963 { 1964 Elf64_External_Chdr *echdr 1965 = (Elf64_External_Chdr *) contents; 1966 bfd_put_32 (abfd, ELFCOMPRESS_ZLIB, &echdr->ch_type); 1967 bfd_put_32 (abfd, 0, &echdr->ch_reserved); 1968 bfd_put_64 (abfd, sec->size, &echdr->ch_size); 1969 bfd_put_64 (abfd, 1 << sec->alignment_power, 1970 &echdr->ch_addralign); 1971 } 1972 } 1973 else 1974 { 1975 /* Clear the SHF_COMPRESSED bit. */ 1976 elf_section_flags (sec) &= ~SHF_COMPRESSED; 1977 1978 /* Write the zlib header. It should be "ZLIB" followed by 1979 the uncompressed section size, 8 bytes in big-endian 1980 order. */ 1981 memcpy (contents, "ZLIB", 4); 1982 bfd_putb64 (sec->size, contents + 4); 1983 } 1984 } 1985 } 1986 else 1987 abort (); 1988} 1989 1990/* 1991 FUNCTION 1992 bfd_check_compression_header 1993 1994 SYNOPSIS 1995 bfd_boolean bfd_check_compression_header 1996 (bfd *abfd, bfd_byte *contents, asection *sec, 1997 bfd_size_type *uncompressed_size); 1998 1999DESCRIPTION 2000 Check the compression header at CONTENTS of SEC in ABFD and 2001 store the uncompressed size in UNCOMPRESSED_SIZE if the 2002 compression header is valid. 2003 2004RETURNS 2005 Return TRUE if the compression header is valid. 2006*/ 2007 2008bfd_boolean 2009bfd_check_compression_header (bfd *abfd, bfd_byte *contents, 2010 asection *sec, 2011 bfd_size_type *uncompressed_size) 2012{ 2013 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour 2014 && (elf_section_flags (sec) & SHF_COMPRESSED) != 0) 2015 { 2016 Elf_Internal_Chdr chdr; 2017 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 2018 if (bed->s->elfclass == ELFCLASS32) 2019 { 2020 Elf32_External_Chdr *echdr = (Elf32_External_Chdr *) contents; 2021 chdr.ch_type = bfd_get_32 (abfd, &echdr->ch_type); 2022 chdr.ch_size = bfd_get_32 (abfd, &echdr->ch_size); 2023 chdr.ch_addralign = bfd_get_32 (abfd, &echdr->ch_addralign); 2024 } 2025 else 2026 { 2027 Elf64_External_Chdr *echdr = (Elf64_External_Chdr *) contents; 2028 chdr.ch_type = bfd_get_32 (abfd, &echdr->ch_type); 2029 chdr.ch_size = bfd_get_64 (abfd, &echdr->ch_size); 2030 chdr.ch_addralign = bfd_get_64 (abfd, &echdr->ch_addralign); 2031 } 2032 if (chdr.ch_type == ELFCOMPRESS_ZLIB 2033 && chdr.ch_addralign == 1U << sec->alignment_power) 2034 { 2035 *uncompressed_size = chdr.ch_size; 2036 return TRUE; 2037 } 2038 } 2039 2040 return FALSE; 2041} 2042 2043/* 2044FUNCTION 2045 bfd_get_compression_header_size 2046 2047SYNOPSIS 2048 int bfd_get_compression_header_size (bfd *abfd, asection *sec); 2049 2050DESCRIPTION 2051 Return the size of the compression header of SEC in ABFD. 2052 2053RETURNS 2054 Return the size of the compression header in bytes. 2055*/ 2056 2057int 2058bfd_get_compression_header_size (bfd *abfd, asection *sec) 2059{ 2060 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) 2061 { 2062 if (sec == NULL) 2063 { 2064 if (!(abfd->flags & BFD_COMPRESS_GABI)) 2065 return 0; 2066 } 2067 else if (!(elf_section_flags (sec) & SHF_COMPRESSED)) 2068 return 0; 2069 2070 if (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS32) 2071 return sizeof (Elf32_External_Chdr); 2072 else 2073 return sizeof (Elf64_External_Chdr); 2074 } 2075 2076 return 0; 2077} 2078 2079/* 2080FUNCTION 2081 bfd_convert_section_size 2082 2083SYNOPSIS 2084 bfd_size_type bfd_convert_section_size 2085 (bfd *ibfd, asection *isec, bfd *obfd, bfd_size_type size); 2086 2087DESCRIPTION 2088 Convert the size @var{size} of the section @var{isec} in input 2089 BFD @var{ibfd} to the section size in output BFD @var{obfd}. 2090*/ 2091 2092bfd_size_type 2093bfd_convert_section_size (bfd *ibfd, sec_ptr isec, bfd *obfd, 2094 bfd_size_type size) 2095{ 2096 bfd_size_type hdr_size; 2097 2098 /* Do nothing if input file will be decompressed. */ 2099 if ((ibfd->flags & BFD_DECOMPRESS)) 2100 return size; 2101 2102 /* Do nothing if either input or output aren't ELF. */ 2103 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour 2104 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 2105 return size; 2106 2107 /* Do nothing if ELF classes of input and output are the same. */ 2108 if (get_elf_backend_data (ibfd)->s->elfclass 2109 == get_elf_backend_data (obfd)->s->elfclass) 2110 return size; 2111 2112 /* Do nothing if the input section isn't a SHF_COMPRESSED section. */ 2113 hdr_size = bfd_get_compression_header_size (ibfd, isec); 2114 if (hdr_size == 0) 2115 return size; 2116 2117 /* Adjust the size of the output SHF_COMPRESSED section. */ 2118 if (hdr_size == sizeof (Elf32_External_Chdr)) 2119 return (size - sizeof (Elf32_External_Chdr) 2120 + sizeof (Elf64_External_Chdr)); 2121 else 2122 return (size - sizeof (Elf64_External_Chdr) 2123 + sizeof (Elf32_External_Chdr)); 2124} 2125 2126/* 2127FUNCTION 2128 bfd_convert_section_contents 2129 2130SYNOPSIS 2131 bfd_boolean bfd_convert_section_contents 2132 (bfd *ibfd, asection *isec, bfd *obfd, 2133 bfd_byte **ptr, bfd_size_type *ptr_size); 2134 2135DESCRIPTION 2136 Convert the contents, stored in @var{*ptr}, of the section 2137 @var{isec} in input BFD @var{ibfd} to output BFD @var{obfd} 2138 if needed. The original buffer pointed to by @var{*ptr} may 2139 be freed and @var{*ptr} is returned with memory malloc'd by this 2140 function, and the new size written to @var{ptr_size}. 2141*/ 2142 2143bfd_boolean 2144bfd_convert_section_contents (bfd *ibfd, sec_ptr isec, bfd *obfd, 2145 bfd_byte **ptr, bfd_size_type *ptr_size) 2146{ 2147 bfd_byte *contents; 2148 bfd_size_type ihdr_size, ohdr_size, size; 2149 Elf_Internal_Chdr chdr; 2150 bfd_boolean use_memmove; 2151 2152 /* Do nothing if input file will be decompressed. */ 2153 if ((ibfd->flags & BFD_DECOMPRESS)) 2154 return TRUE; 2155 2156 /* Do nothing if either input or output aren't ELF. */ 2157 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour 2158 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 2159 return TRUE; 2160 2161 /* Do nothing if ELF classes of input and output are the same. */ 2162 if (get_elf_backend_data (ibfd)->s->elfclass 2163 == get_elf_backend_data (obfd)->s->elfclass) 2164 return TRUE; 2165 2166 /* Do nothing if the input section isn't a SHF_COMPRESSED section. */ 2167 ihdr_size = bfd_get_compression_header_size (ibfd, isec); 2168 if (ihdr_size == 0) 2169 return TRUE; 2170 2171 contents = *ptr; 2172 2173 /* Convert the contents of the input SHF_COMPRESSED section to 2174 output. Get the input compression header and the size of the 2175 output compression header. */ 2176 if (ihdr_size == sizeof (Elf32_External_Chdr)) 2177 { 2178 Elf32_External_Chdr *echdr = (Elf32_External_Chdr *) contents; 2179 chdr.ch_type = bfd_get_32 (ibfd, &echdr->ch_type); 2180 chdr.ch_size = bfd_get_32 (ibfd, &echdr->ch_size); 2181 chdr.ch_addralign = bfd_get_32 (ibfd, &echdr->ch_addralign); 2182 2183 ohdr_size = sizeof (Elf64_External_Chdr); 2184 2185 use_memmove = FALSE; 2186 } 2187 else 2188 { 2189 Elf64_External_Chdr *echdr = (Elf64_External_Chdr *) contents; 2190 chdr.ch_type = bfd_get_32 (ibfd, &echdr->ch_type); 2191 chdr.ch_size = bfd_get_64 (ibfd, &echdr->ch_size); 2192 chdr.ch_addralign = bfd_get_64 (ibfd, &echdr->ch_addralign); 2193 2194 ohdr_size = sizeof (Elf32_External_Chdr); 2195 use_memmove = TRUE; 2196 } 2197 2198 size = bfd_get_section_size (isec) - ihdr_size + ohdr_size; 2199 if (!use_memmove) 2200 { 2201 contents = (bfd_byte *) bfd_malloc (size); 2202 if (contents == NULL) 2203 return FALSE; 2204 } 2205 2206 /* Write out the output compression header. */ 2207 if (ohdr_size == sizeof (Elf32_External_Chdr)) 2208 { 2209 Elf32_External_Chdr *echdr = (Elf32_External_Chdr *) contents; 2210 bfd_put_32 (obfd, ELFCOMPRESS_ZLIB, &echdr->ch_type); 2211 bfd_put_32 (obfd, chdr.ch_size, &echdr->ch_size); 2212 bfd_put_32 (obfd, chdr.ch_addralign, &echdr->ch_addralign); 2213 } 2214 else 2215 { 2216 Elf64_External_Chdr *echdr = (Elf64_External_Chdr *) contents; 2217 bfd_put_32 (obfd, ELFCOMPRESS_ZLIB, &echdr->ch_type); 2218 bfd_put_32 (obfd, 0, &echdr->ch_reserved); 2219 bfd_put_64 (obfd, chdr.ch_size, &echdr->ch_size); 2220 bfd_put_64 (obfd, chdr.ch_addralign, &echdr->ch_addralign); 2221 } 2222 2223 /* Copy the compressed contents. */ 2224 if (use_memmove) 2225 memmove (contents + ohdr_size, *ptr + ihdr_size, size - ohdr_size); 2226 else 2227 { 2228 memcpy (contents + ohdr_size, *ptr + ihdr_size, size - ohdr_size); 2229 free (*ptr); 2230 *ptr = contents; 2231 } 2232 2233 *ptr_size = size; 2234 return TRUE; 2235} 2236