| 1 | /* Generic BFD library interface and support routines. |
| 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
| 3 | 2000, 2001, 2002, 2003, 2004 |
| 4 | Free Software Foundation, Inc. |
| 5 | Written by Cygnus Support. |
| 6 | |
| 7 | This file is part of BFD, the Binary File Descriptor library. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 2 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program; if not, write to the Free Software |
| 21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 22 | |
| 23 | /* |
| 24 | SECTION |
| 25 | <<typedef bfd>> |
| 26 | |
| 27 | A BFD has type <<bfd>>; objects of this type are the |
| 28 | cornerstone of any application using BFD. Using BFD |
| 29 | consists of making references though the BFD and to data in the BFD. |
| 30 | |
| 31 | Here is the structure that defines the type <<bfd>>. It |
| 32 | contains the major data about the file and pointers |
| 33 | to the rest of the data. |
| 34 | |
| 35 | CODE_FRAGMENT |
| 36 | . |
| 37 | .struct bfd |
| 38 | .{ |
| 39 | . {* A unique identifier of the BFD *} |
| 40 | . unsigned int id; |
| 41 | . |
| 42 | . {* The filename the application opened the BFD with. *} |
| 43 | . const char *filename; |
| 44 | . |
| 45 | . {* A pointer to the target jump table. *} |
| 46 | . const struct bfd_target *xvec; |
| 47 | . |
| 48 | . {* The IOSTREAM, and corresponding IO vector that provide access |
| 49 | . to the file backing the BFD. *} |
| 50 | . void *iostream; |
| 51 | . const struct bfd_iovec *iovec; |
| 52 | . |
| 53 | . {* Is the file descriptor being cached? That is, can it be closed as |
| 54 | . needed, and re-opened when accessed later? *} |
| 55 | . bfd_boolean cacheable; |
| 56 | . |
| 57 | . {* Marks whether there was a default target specified when the |
| 58 | . BFD was opened. This is used to select which matching algorithm |
| 59 | . to use to choose the back end. *} |
| 60 | . bfd_boolean target_defaulted; |
| 61 | . |
| 62 | . {* The caching routines use these to maintain a |
| 63 | . least-recently-used list of BFDs. *} |
| 64 | . struct bfd *lru_prev, *lru_next; |
| 65 | . |
| 66 | . {* When a file is closed by the caching routines, BFD retains |
| 67 | . state information on the file here... *} |
| 68 | . ufile_ptr where; |
| 69 | . |
| 70 | . {* ... and here: (``once'' means at least once). *} |
| 71 | . bfd_boolean opened_once; |
| 72 | . |
| 73 | . {* Set if we have a locally maintained mtime value, rather than |
| 74 | . getting it from the file each time. *} |
| 75 | . bfd_boolean mtime_set; |
| 76 | . |
| 77 | . {* File modified time, if mtime_set is TRUE. *} |
| 78 | . long mtime; |
| 79 | . |
| 80 | . {* Reserved for an unimplemented file locking extension. *} |
| 81 | . int ifd; |
| 82 | . |
| 83 | . {* The format which belongs to the BFD. (object, core, etc.) *} |
| 84 | . bfd_format format; |
| 85 | . |
| 86 | . {* The direction with which the BFD was opened. *} |
| 87 | . enum bfd_direction |
| 88 | . { |
| 89 | . no_direction = 0, |
| 90 | . read_direction = 1, |
| 91 | . write_direction = 2, |
| 92 | . both_direction = 3 |
| 93 | . } |
| 94 | . direction; |
| 95 | . |
| 96 | . {* Format_specific flags. *} |
| 97 | . flagword flags; |
| 98 | . |
| 99 | . {* Currently my_archive is tested before adding origin to |
| 100 | . anything. I believe that this can become always an add of |
| 101 | . origin, with origin set to 0 for non archive files. *} |
| 102 | . ufile_ptr origin; |
| 103 | . |
| 104 | . {* Remember when output has begun, to stop strange things |
| 105 | . from happening. *} |
| 106 | . bfd_boolean output_has_begun; |
| 107 | . |
| 108 | . {* A hash table for section names. *} |
| 109 | . struct bfd_hash_table section_htab; |
| 110 | . |
| 111 | . {* Pointer to linked list of sections. *} |
| 112 | . struct bfd_section *sections; |
| 113 | . |
| 114 | . {* The place where we add to the section list. *} |
| 115 | . struct bfd_section **section_tail; |
| 116 | . |
| 117 | . {* The number of sections. *} |
| 118 | . unsigned int section_count; |
| 119 | . |
| 120 | . {* Stuff only useful for object files: |
| 121 | . The start address. *} |
| 122 | . bfd_vma start_address; |
| 123 | . |
| 124 | . {* Used for input and output. *} |
| 125 | . unsigned int symcount; |
| 126 | . |
| 127 | . {* Symbol table for output BFD (with symcount entries). *} |
| 128 | . struct bfd_symbol **outsymbols; |
| 129 | . |
| 130 | . {* Used for slurped dynamic symbol tables. *} |
| 131 | . unsigned int dynsymcount; |
| 132 | . |
| 133 | . {* Pointer to structure which contains architecture information. *} |
| 134 | . const struct bfd_arch_info *arch_info; |
| 135 | . |
| 136 | . {* Stuff only useful for archives. *} |
| 137 | . void *arelt_data; |
| 138 | . struct bfd *my_archive; {* The containing archive BFD. *} |
| 139 | . struct bfd *next; {* The next BFD in the archive. *} |
| 140 | . struct bfd *archive_head; {* The first BFD in the archive. *} |
| 141 | . bfd_boolean has_armap; |
| 142 | . |
| 143 | . {* A chain of BFD structures involved in a link. *} |
| 144 | . struct bfd *link_next; |
| 145 | . |
| 146 | . {* A field used by _bfd_generic_link_add_archive_symbols. This will |
| 147 | . be used only for archive elements. *} |
| 148 | . int archive_pass; |
| 149 | . |
| 150 | . {* Used by the back end to hold private data. *} |
| 151 | . union |
| 152 | . { |
| 153 | . struct aout_data_struct *aout_data; |
| 154 | . struct artdata *aout_ar_data; |
| 155 | . struct _oasys_data *oasys_obj_data; |
| 156 | . struct _oasys_ar_data *oasys_ar_data; |
| 157 | . struct coff_tdata *coff_obj_data; |
| 158 | . struct pe_tdata *pe_obj_data; |
| 159 | . struct xcoff_tdata *xcoff_obj_data; |
| 160 | . struct ecoff_tdata *ecoff_obj_data; |
| 161 | . struct ieee_data_struct *ieee_data; |
| 162 | . struct ieee_ar_data_struct *ieee_ar_data; |
| 163 | . struct srec_data_struct *srec_data; |
| 164 | . struct ihex_data_struct *ihex_data; |
| 165 | . struct tekhex_data_struct *tekhex_data; |
| 166 | . struct elf_obj_tdata *elf_obj_data; |
| 167 | . struct nlm_obj_tdata *nlm_obj_data; |
| 168 | . struct bout_data_struct *bout_data; |
| 169 | . struct mmo_data_struct *mmo_data; |
| 170 | . struct sun_core_struct *sun_core_data; |
| 171 | . struct sco5_core_struct *sco5_core_data; |
| 172 | . struct trad_core_struct *trad_core_data; |
| 173 | . struct som_data_struct *som_data; |
| 174 | . struct hpux_core_struct *hpux_core_data; |
| 175 | . struct hppabsd_core_struct *hppabsd_core_data; |
| 176 | . struct sgi_core_struct *sgi_core_data; |
| 177 | . struct lynx_core_struct *lynx_core_data; |
| 178 | . struct osf_core_struct *osf_core_data; |
| 179 | . struct cisco_core_struct *cisco_core_data; |
| 180 | . struct versados_data_struct *versados_data; |
| 181 | . struct netbsd_core_struct *netbsd_core_data; |
| 182 | . struct mach_o_data_struct *mach_o_data; |
| 183 | . struct mach_o_fat_data_struct *mach_o_fat_data; |
| 184 | . struct bfd_pef_data_struct *pef_data; |
| 185 | . struct bfd_pef_xlib_data_struct *pef_xlib_data; |
| 186 | . struct bfd_sym_data_struct *sym_data; |
| 187 | . void *any; |
| 188 | . } |
| 189 | . tdata; |
| 190 | . |
| 191 | . {* Used by the application to hold private data. *} |
| 192 | . void *usrdata; |
| 193 | . |
| 194 | . {* Where all the allocated stuff under this BFD goes. This is a |
| 195 | . struct objalloc *, but we use void * to avoid requiring the inclusion |
| 196 | . of objalloc.h. *} |
| 197 | . void *memory; |
| 198 | .}; |
| 199 | . |
| 200 | */ |
| 201 | |
| 202 | #include "bfd.h" |
| 203 | #include "bfdver.h" |
| 204 | #include "sysdep.h" |
| 205 | #include <stdarg.h> |
| 206 | #include "libiberty.h" |
| 207 | #include "safe-ctype.h" |
| 208 | #include "bfdlink.h" |
| 209 | #include "libbfd.h" |
| 210 | #include "coff/internal.h" |
| 211 | #include "coff/sym.h" |
| 212 | #include "libcoff.h" |
| 213 | #include "libecoff.h" |
| 214 | #undef obj_symbols |
| 215 | #include "elf-bfd.h" |
| 216 | \f |
| 217 | /* provide storage for subsystem, stack and heap data which may have been |
| 218 | passed in on the command line. Ld puts this data into a bfd_link_info |
| 219 | struct which ultimately gets passed in to the bfd. When it arrives, copy |
| 220 | it to the following struct so that the data will be available in coffcode.h |
| 221 | where it is needed. The typedef's used are defined in bfd.h */ |
| 222 | \f |
| 223 | /* |
| 224 | SECTION |
| 225 | Error reporting |
| 226 | |
| 227 | Most BFD functions return nonzero on success (check their |
| 228 | individual documentation for precise semantics). On an error, |
| 229 | they call <<bfd_set_error>> to set an error condition that callers |
| 230 | can check by calling <<bfd_get_error>>. |
| 231 | If that returns <<bfd_error_system_call>>, then check |
| 232 | <<errno>>. |
| 233 | |
| 234 | The easiest way to report a BFD error to the user is to |
| 235 | use <<bfd_perror>>. |
| 236 | |
| 237 | SUBSECTION |
| 238 | Type <<bfd_error_type>> |
| 239 | |
| 240 | The values returned by <<bfd_get_error>> are defined by the |
| 241 | enumerated type <<bfd_error_type>>. |
| 242 | |
| 243 | CODE_FRAGMENT |
| 244 | . |
| 245 | .typedef enum bfd_error |
| 246 | .{ |
| 247 | . bfd_error_no_error = 0, |
| 248 | . bfd_error_system_call, |
| 249 | . bfd_error_invalid_target, |
| 250 | . bfd_error_wrong_format, |
| 251 | . bfd_error_wrong_object_format, |
| 252 | . bfd_error_invalid_operation, |
| 253 | . bfd_error_no_memory, |
| 254 | . bfd_error_no_symbols, |
| 255 | . bfd_error_no_armap, |
| 256 | . bfd_error_no_more_archived_files, |
| 257 | . bfd_error_malformed_archive, |
| 258 | . bfd_error_file_not_recognized, |
| 259 | . bfd_error_file_ambiguously_recognized, |
| 260 | . bfd_error_no_contents, |
| 261 | . bfd_error_nonrepresentable_section, |
| 262 | . bfd_error_no_debug_section, |
| 263 | . bfd_error_bad_value, |
| 264 | . bfd_error_file_truncated, |
| 265 | . bfd_error_file_too_big, |
| 266 | . bfd_error_invalid_error_code |
| 267 | .} |
| 268 | .bfd_error_type; |
| 269 | . |
| 270 | */ |
| 271 | |
| 272 | static bfd_error_type bfd_error = bfd_error_no_error; |
| 273 | |
| 274 | const char *const bfd_errmsgs[] = |
| 275 | { |
| 276 | N_("No error"), |
| 277 | N_("System call error"), |
| 278 | N_("Invalid bfd target"), |
| 279 | N_("File in wrong format"), |
| 280 | N_("Archive object file in wrong format"), |
| 281 | N_("Invalid operation"), |
| 282 | N_("Memory exhausted"), |
| 283 | N_("No symbols"), |
| 284 | N_("Archive has no index; run ranlib to add one"), |
| 285 | N_("No more archived files"), |
| 286 | N_("Malformed archive"), |
| 287 | N_("File format not recognized"), |
| 288 | N_("File format is ambiguous"), |
| 289 | N_("Section has no contents"), |
| 290 | N_("Nonrepresentable section on output"), |
| 291 | N_("Symbol needs debug section which does not exist"), |
| 292 | N_("Bad value"), |
| 293 | N_("File truncated"), |
| 294 | N_("File too big"), |
| 295 | N_("#<Invalid error code>") |
| 296 | }; |
| 297 | |
| 298 | /* |
| 299 | FUNCTION |
| 300 | bfd_get_error |
| 301 | |
| 302 | SYNOPSIS |
| 303 | bfd_error_type bfd_get_error (void); |
| 304 | |
| 305 | DESCRIPTION |
| 306 | Return the current BFD error condition. |
| 307 | */ |
| 308 | |
| 309 | bfd_error_type |
| 310 | bfd_get_error (void) |
| 311 | { |
| 312 | return bfd_error; |
| 313 | } |
| 314 | |
| 315 | /* |
| 316 | FUNCTION |
| 317 | bfd_set_error |
| 318 | |
| 319 | SYNOPSIS |
| 320 | void bfd_set_error (bfd_error_type error_tag); |
| 321 | |
| 322 | DESCRIPTION |
| 323 | Set the BFD error condition to be @var{error_tag}. |
| 324 | */ |
| 325 | |
| 326 | void |
| 327 | bfd_set_error (bfd_error_type error_tag) |
| 328 | { |
| 329 | bfd_error = error_tag; |
| 330 | } |
| 331 | |
| 332 | /* |
| 333 | FUNCTION |
| 334 | bfd_errmsg |
| 335 | |
| 336 | SYNOPSIS |
| 337 | const char *bfd_errmsg (bfd_error_type error_tag); |
| 338 | |
| 339 | DESCRIPTION |
| 340 | Return a string describing the error @var{error_tag}, or |
| 341 | the system error if @var{error_tag} is <<bfd_error_system_call>>. |
| 342 | */ |
| 343 | |
| 344 | const char * |
| 345 | bfd_errmsg (bfd_error_type error_tag) |
| 346 | { |
| 347 | #ifndef errno |
| 348 | extern int errno; |
| 349 | #endif |
| 350 | if (error_tag == bfd_error_system_call) |
| 351 | return xstrerror (errno); |
| 352 | |
| 353 | if (error_tag > bfd_error_invalid_error_code) |
| 354 | error_tag = bfd_error_invalid_error_code; /* sanity check */ |
| 355 | |
| 356 | return _(bfd_errmsgs [error_tag]); |
| 357 | } |
| 358 | |
| 359 | /* |
| 360 | FUNCTION |
| 361 | bfd_perror |
| 362 | |
| 363 | SYNOPSIS |
| 364 | void bfd_perror (const char *message); |
| 365 | |
| 366 | DESCRIPTION |
| 367 | Print to the standard error stream a string describing the |
| 368 | last BFD error that occurred, or the last system error if |
| 369 | the last BFD error was a system call failure. If @var{message} |
| 370 | is non-NULL and non-empty, the error string printed is preceded |
| 371 | by @var{message}, a colon, and a space. It is followed by a newline. |
| 372 | */ |
| 373 | |
| 374 | void |
| 375 | bfd_perror (const char *message) |
| 376 | { |
| 377 | if (bfd_get_error () == bfd_error_system_call) |
| 378 | /* Must be a system error then. */ |
| 379 | perror ((char *) message); |
| 380 | else |
| 381 | { |
| 382 | if (message == NULL || *message == '\0') |
| 383 | fprintf (stderr, "%s\n", bfd_errmsg (bfd_get_error ())); |
| 384 | else |
| 385 | fprintf (stderr, "%s: %s\n", message, bfd_errmsg (bfd_get_error ())); |
| 386 | } |
| 387 | } |
| 388 | |
| 389 | /* |
| 390 | SUBSECTION |
| 391 | BFD error handler |
| 392 | |
| 393 | Some BFD functions want to print messages describing the |
| 394 | problem. They call a BFD error handler function. This |
| 395 | function may be overridden by the program. |
| 396 | |
| 397 | The BFD error handler acts like printf. |
| 398 | |
| 399 | CODE_FRAGMENT |
| 400 | . |
| 401 | .typedef void (*bfd_error_handler_type) (const char *, ...); |
| 402 | . |
| 403 | */ |
| 404 | |
| 405 | /* The program name used when printing BFD error messages. */ |
| 406 | |
| 407 | static const char *_bfd_error_program_name; |
| 408 | |
| 409 | /* This is the default routine to handle BFD error messages. */ |
| 410 | |
| 411 | static void |
| 412 | _bfd_default_error_handler (const char *s, ...) |
| 413 | { |
| 414 | va_list p; |
| 415 | |
| 416 | if (_bfd_error_program_name != NULL) |
| 417 | fprintf (stderr, "%s: ", _bfd_error_program_name); |
| 418 | else |
| 419 | fprintf (stderr, "BFD: "); |
| 420 | |
| 421 | va_start (p, s); |
| 422 | vfprintf (stderr, s, p); |
| 423 | va_end (p); |
| 424 | |
| 425 | fprintf (stderr, "\n"); |
| 426 | } |
| 427 | |
| 428 | /* This is a function pointer to the routine which should handle BFD |
| 429 | error messages. It is called when a BFD routine encounters an |
| 430 | error for which it wants to print a message. Going through a |
| 431 | function pointer permits a program linked against BFD to intercept |
| 432 | the messages and deal with them itself. */ |
| 433 | |
| 434 | bfd_error_handler_type _bfd_error_handler = _bfd_default_error_handler; |
| 435 | |
| 436 | /* |
| 437 | FUNCTION |
| 438 | bfd_set_error_handler |
| 439 | |
| 440 | SYNOPSIS |
| 441 | bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type); |
| 442 | |
| 443 | DESCRIPTION |
| 444 | Set the BFD error handler function. Returns the previous |
| 445 | function. |
| 446 | */ |
| 447 | |
| 448 | bfd_error_handler_type |
| 449 | bfd_set_error_handler (bfd_error_handler_type pnew) |
| 450 | { |
| 451 | bfd_error_handler_type pold; |
| 452 | |
| 453 | pold = _bfd_error_handler; |
| 454 | _bfd_error_handler = pnew; |
| 455 | return pold; |
| 456 | } |
| 457 | |
| 458 | /* |
| 459 | FUNCTION |
| 460 | bfd_set_error_program_name |
| 461 | |
| 462 | SYNOPSIS |
| 463 | void bfd_set_error_program_name (const char *); |
| 464 | |
| 465 | DESCRIPTION |
| 466 | Set the program name to use when printing a BFD error. This |
| 467 | is printed before the error message followed by a colon and |
| 468 | space. The string must not be changed after it is passed to |
| 469 | this function. |
| 470 | */ |
| 471 | |
| 472 | void |
| 473 | bfd_set_error_program_name (const char *name) |
| 474 | { |
| 475 | _bfd_error_program_name = name; |
| 476 | } |
| 477 | |
| 478 | /* |
| 479 | FUNCTION |
| 480 | bfd_get_error_handler |
| 481 | |
| 482 | SYNOPSIS |
| 483 | bfd_error_handler_type bfd_get_error_handler (void); |
| 484 | |
| 485 | DESCRIPTION |
| 486 | Return the BFD error handler function. |
| 487 | */ |
| 488 | |
| 489 | bfd_error_handler_type |
| 490 | bfd_get_error_handler (void) |
| 491 | { |
| 492 | return _bfd_error_handler; |
| 493 | } |
| 494 | |
| 495 | /* |
| 496 | FUNCTION |
| 497 | bfd_archive_filename |
| 498 | |
| 499 | SYNOPSIS |
| 500 | const char *bfd_archive_filename (bfd *); |
| 501 | |
| 502 | DESCRIPTION |
| 503 | For a BFD that is a component of an archive, returns a string |
| 504 | with both the archive name and file name. For other BFDs, just |
| 505 | returns the file name. |
| 506 | */ |
| 507 | |
| 508 | const char * |
| 509 | bfd_archive_filename (bfd *abfd) |
| 510 | { |
| 511 | if (abfd == NULL) |
| 512 | return NULL; |
| 513 | |
| 514 | if (abfd->my_archive) |
| 515 | { |
| 516 | static size_t curr = 0; |
| 517 | static char *buf; |
| 518 | size_t needed; |
| 519 | |
| 520 | needed = (strlen (bfd_get_filename (abfd->my_archive)) |
| 521 | + strlen (bfd_get_filename (abfd)) + 3); |
| 522 | if (needed > curr) |
| 523 | { |
| 524 | if (curr) |
| 525 | free (buf); |
| 526 | curr = needed + (needed >> 1); |
| 527 | buf = bfd_malloc (curr); |
| 528 | /* If we can't malloc, fail safe by returning just the file |
| 529 | name. This function is only used when building error |
| 530 | messages. */ |
| 531 | if (!buf) |
| 532 | { |
| 533 | curr = 0; |
| 534 | return bfd_get_filename (abfd); |
| 535 | } |
| 536 | } |
| 537 | sprintf (buf, "%s(%s)", bfd_get_filename (abfd->my_archive), |
| 538 | bfd_get_filename (abfd)); |
| 539 | return buf; |
| 540 | } |
| 541 | else |
| 542 | return bfd_get_filename (abfd); |
| 543 | } |
| 544 | \f |
| 545 | /* |
| 546 | SECTION |
| 547 | Symbols |
| 548 | */ |
| 549 | |
| 550 | /* |
| 551 | FUNCTION |
| 552 | bfd_get_reloc_upper_bound |
| 553 | |
| 554 | SYNOPSIS |
| 555 | long bfd_get_reloc_upper_bound (bfd *abfd, asection *sect); |
| 556 | |
| 557 | DESCRIPTION |
| 558 | Return the number of bytes required to store the |
| 559 | relocation information associated with section @var{sect} |
| 560 | attached to bfd @var{abfd}. If an error occurs, return -1. |
| 561 | |
| 562 | */ |
| 563 | |
| 564 | long |
| 565 | bfd_get_reloc_upper_bound (bfd *abfd, sec_ptr asect) |
| 566 | { |
| 567 | if (abfd->format != bfd_object) |
| 568 | { |
| 569 | bfd_set_error (bfd_error_invalid_operation); |
| 570 | return -1; |
| 571 | } |
| 572 | |
| 573 | return BFD_SEND (abfd, _get_reloc_upper_bound, (abfd, asect)); |
| 574 | } |
| 575 | |
| 576 | /* |
| 577 | FUNCTION |
| 578 | bfd_canonicalize_reloc |
| 579 | |
| 580 | SYNOPSIS |
| 581 | long bfd_canonicalize_reloc |
| 582 | (bfd *abfd, asection *sec, arelent **loc, asymbol **syms); |
| 583 | |
| 584 | DESCRIPTION |
| 585 | Call the back end associated with the open BFD |
| 586 | @var{abfd} and translate the external form of the relocation |
| 587 | information attached to @var{sec} into the internal canonical |
| 588 | form. Place the table into memory at @var{loc}, which has |
| 589 | been preallocated, usually by a call to |
| 590 | <<bfd_get_reloc_upper_bound>>. Returns the number of relocs, or |
| 591 | -1 on error. |
| 592 | |
| 593 | The @var{syms} table is also needed for horrible internal magic |
| 594 | reasons. |
| 595 | |
| 596 | */ |
| 597 | long |
| 598 | bfd_canonicalize_reloc (bfd *abfd, |
| 599 | sec_ptr asect, |
| 600 | arelent **location, |
| 601 | asymbol **symbols) |
| 602 | { |
| 603 | if (abfd->format != bfd_object) |
| 604 | { |
| 605 | bfd_set_error (bfd_error_invalid_operation); |
| 606 | return -1; |
| 607 | } |
| 608 | |
| 609 | return BFD_SEND (abfd, _bfd_canonicalize_reloc, |
| 610 | (abfd, asect, location, symbols)); |
| 611 | } |
| 612 | |
| 613 | /* |
| 614 | FUNCTION |
| 615 | bfd_set_reloc |
| 616 | |
| 617 | SYNOPSIS |
| 618 | void bfd_set_reloc |
| 619 | (bfd *abfd, asection *sec, arelent **rel, unsigned int count); |
| 620 | |
| 621 | DESCRIPTION |
| 622 | Set the relocation pointer and count within |
| 623 | section @var{sec} to the values @var{rel} and @var{count}. |
| 624 | The argument @var{abfd} is ignored. |
| 625 | |
| 626 | */ |
| 627 | |
| 628 | void |
| 629 | bfd_set_reloc (bfd *ignore_abfd ATTRIBUTE_UNUSED, |
| 630 | sec_ptr asect, |
| 631 | arelent **location, |
| 632 | unsigned int count) |
| 633 | { |
| 634 | asect->orelocation = location; |
| 635 | asect->reloc_count = count; |
| 636 | } |
| 637 | |
| 638 | /* |
| 639 | FUNCTION |
| 640 | bfd_set_file_flags |
| 641 | |
| 642 | SYNOPSIS |
| 643 | bfd_boolean bfd_set_file_flags (bfd *abfd, flagword flags); |
| 644 | |
| 645 | DESCRIPTION |
| 646 | Set the flag word in the BFD @var{abfd} to the value @var{flags}. |
| 647 | |
| 648 | Possible errors are: |
| 649 | o <<bfd_error_wrong_format>> - The target bfd was not of object format. |
| 650 | o <<bfd_error_invalid_operation>> - The target bfd was open for reading. |
| 651 | o <<bfd_error_invalid_operation>> - |
| 652 | The flag word contained a bit which was not applicable to the |
| 653 | type of file. E.g., an attempt was made to set the <<D_PAGED>> bit |
| 654 | on a BFD format which does not support demand paging. |
| 655 | |
| 656 | */ |
| 657 | |
| 658 | bfd_boolean |
| 659 | bfd_set_file_flags (bfd *abfd, flagword flags) |
| 660 | { |
| 661 | if (abfd->format != bfd_object) |
| 662 | { |
| 663 | bfd_set_error (bfd_error_wrong_format); |
| 664 | return FALSE; |
| 665 | } |
| 666 | |
| 667 | if (bfd_read_p (abfd)) |
| 668 | { |
| 669 | bfd_set_error (bfd_error_invalid_operation); |
| 670 | return FALSE; |
| 671 | } |
| 672 | |
| 673 | bfd_get_file_flags (abfd) = flags; |
| 674 | if ((flags & bfd_applicable_file_flags (abfd)) != flags) |
| 675 | { |
| 676 | bfd_set_error (bfd_error_invalid_operation); |
| 677 | return FALSE; |
| 678 | } |
| 679 | |
| 680 | return TRUE; |
| 681 | } |
| 682 | |
| 683 | void |
| 684 | bfd_assert (const char *file, int line) |
| 685 | { |
| 686 | (*_bfd_error_handler) (_("BFD %s assertion fail %s:%d"), |
| 687 | BFD_VERSION_STRING, file, line); |
| 688 | } |
| 689 | |
| 690 | /* A more or less friendly abort message. In libbfd.h abort is |
| 691 | defined to call this function. */ |
| 692 | |
| 693 | #ifndef EXIT_FAILURE |
| 694 | #define EXIT_FAILURE 1 |
| 695 | #endif |
| 696 | |
| 697 | void |
| 698 | _bfd_abort (const char *file, int line, const char *fn) |
| 699 | { |
| 700 | if (fn != NULL) |
| 701 | (*_bfd_error_handler) |
| 702 | (_("BFD %s internal error, aborting at %s line %d in %s\n"), |
| 703 | BFD_VERSION_STRING, file, line, fn); |
| 704 | else |
| 705 | (*_bfd_error_handler) |
| 706 | (_("BFD %s internal error, aborting at %s line %d\n"), |
| 707 | BFD_VERSION_STRING, file, line); |
| 708 | (*_bfd_error_handler) (_("Please report this bug.\n")); |
| 709 | xexit (EXIT_FAILURE); |
| 710 | } |
| 711 | |
| 712 | /* |
| 713 | FUNCTION |
| 714 | bfd_get_arch_size |
| 715 | |
| 716 | SYNOPSIS |
| 717 | int bfd_get_arch_size (bfd *abfd); |
| 718 | |
| 719 | DESCRIPTION |
| 720 | Returns the architecture address size, in bits, as determined |
| 721 | by the object file's format. For ELF, this information is |
| 722 | included in the header. |
| 723 | |
| 724 | RETURNS |
| 725 | Returns the arch size in bits if known, <<-1>> otherwise. |
| 726 | */ |
| 727 | |
| 728 | int |
| 729 | bfd_get_arch_size (bfd *abfd) |
| 730 | { |
| 731 | if (abfd->xvec->flavour == bfd_target_elf_flavour) |
| 732 | return get_elf_backend_data (abfd)->s->arch_size; |
| 733 | |
| 734 | return -1; |
| 735 | } |
| 736 | |
| 737 | /* |
| 738 | FUNCTION |
| 739 | bfd_get_sign_extend_vma |
| 740 | |
| 741 | SYNOPSIS |
| 742 | int bfd_get_sign_extend_vma (bfd *abfd); |
| 743 | |
| 744 | DESCRIPTION |
| 745 | Indicates if the target architecture "naturally" sign extends |
| 746 | an address. Some architectures implicitly sign extend address |
| 747 | values when they are converted to types larger than the size |
| 748 | of an address. For instance, bfd_get_start_address() will |
| 749 | return an address sign extended to fill a bfd_vma when this is |
| 750 | the case. |
| 751 | |
| 752 | RETURNS |
| 753 | Returns <<1>> if the target architecture is known to sign |
| 754 | extend addresses, <<0>> if the target architecture is known to |
| 755 | not sign extend addresses, and <<-1>> otherwise. |
| 756 | */ |
| 757 | |
| 758 | int |
| 759 | bfd_get_sign_extend_vma (bfd *abfd) |
| 760 | { |
| 761 | char *name; |
| 762 | |
| 763 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) |
| 764 | return get_elf_backend_data (abfd)->sign_extend_vma; |
| 765 | |
| 766 | name = bfd_get_target (abfd); |
| 767 | |
| 768 | /* Return a proper value for DJGPP & PE COFF (x86 COFF variants). |
| 769 | This function is required for DWARF2 support, but there is |
| 770 | no place to store this information in the COFF back end. |
| 771 | Should enough other COFF targets add support for DWARF2, |
| 772 | a place will have to be found. Until then, this hack will do. */ |
| 773 | if (strncmp (name, "coff-go32", sizeof ("coff-go32") - 1) == 0 |
| 774 | || strcmp (name, "pe-i386") == 0 |
| 775 | || strcmp (name, "pei-i386") == 0) |
| 776 | return 1; |
| 777 | |
| 778 | bfd_set_error (bfd_error_wrong_format); |
| 779 | return -1; |
| 780 | } |
| 781 | |
| 782 | /* |
| 783 | FUNCTION |
| 784 | bfd_set_start_address |
| 785 | |
| 786 | SYNOPSIS |
| 787 | bfd_boolean bfd_set_start_address (bfd *abfd, bfd_vma vma); |
| 788 | |
| 789 | DESCRIPTION |
| 790 | Make @var{vma} the entry point of output BFD @var{abfd}. |
| 791 | |
| 792 | RETURNS |
| 793 | Returns <<TRUE>> on success, <<FALSE>> otherwise. |
| 794 | */ |
| 795 | |
| 796 | bfd_boolean |
| 797 | bfd_set_start_address (bfd *abfd, bfd_vma vma) |
| 798 | { |
| 799 | abfd->start_address = vma; |
| 800 | return TRUE; |
| 801 | } |
| 802 | |
| 803 | /* |
| 804 | FUNCTION |
| 805 | bfd_get_gp_size |
| 806 | |
| 807 | SYNOPSIS |
| 808 | unsigned int bfd_get_gp_size (bfd *abfd); |
| 809 | |
| 810 | DESCRIPTION |
| 811 | Return the maximum size of objects to be optimized using the GP |
| 812 | register under MIPS ECOFF. This is typically set by the <<-G>> |
| 813 | argument to the compiler, assembler or linker. |
| 814 | */ |
| 815 | |
| 816 | unsigned int |
| 817 | bfd_get_gp_size (bfd *abfd) |
| 818 | { |
| 819 | if (abfd->format == bfd_object) |
| 820 | { |
| 821 | if (abfd->xvec->flavour == bfd_target_ecoff_flavour) |
| 822 | return ecoff_data (abfd)->gp_size; |
| 823 | else if (abfd->xvec->flavour == bfd_target_elf_flavour) |
| 824 | return elf_gp_size (abfd); |
| 825 | } |
| 826 | return 0; |
| 827 | } |
| 828 | |
| 829 | /* |
| 830 | FUNCTION |
| 831 | bfd_set_gp_size |
| 832 | |
| 833 | SYNOPSIS |
| 834 | void bfd_set_gp_size (bfd *abfd, unsigned int i); |
| 835 | |
| 836 | DESCRIPTION |
| 837 | Set the maximum size of objects to be optimized using the GP |
| 838 | register under ECOFF or MIPS ELF. This is typically set by |
| 839 | the <<-G>> argument to the compiler, assembler or linker. |
| 840 | */ |
| 841 | |
| 842 | void |
| 843 | bfd_set_gp_size (bfd *abfd, unsigned int i) |
| 844 | { |
| 845 | /* Don't try to set GP size on an archive or core file! */ |
| 846 | if (abfd->format != bfd_object) |
| 847 | return; |
| 848 | |
| 849 | if (abfd->xvec->flavour == bfd_target_ecoff_flavour) |
| 850 | ecoff_data (abfd)->gp_size = i; |
| 851 | else if (abfd->xvec->flavour == bfd_target_elf_flavour) |
| 852 | elf_gp_size (abfd) = i; |
| 853 | } |
| 854 | |
| 855 | /* Get the GP value. This is an internal function used by some of the |
| 856 | relocation special_function routines on targets which support a GP |
| 857 | register. */ |
| 858 | |
| 859 | bfd_vma |
| 860 | _bfd_get_gp_value (bfd *abfd) |
| 861 | { |
| 862 | if (! abfd) |
| 863 | return 0; |
| 864 | if (abfd->format != bfd_object) |
| 865 | return 0; |
| 866 | |
| 867 | if (abfd->xvec->flavour == bfd_target_ecoff_flavour) |
| 868 | return ecoff_data (abfd)->gp; |
| 869 | else if (abfd->xvec->flavour == bfd_target_elf_flavour) |
| 870 | return elf_gp (abfd); |
| 871 | |
| 872 | return 0; |
| 873 | } |
| 874 | |
| 875 | /* Set the GP value. */ |
| 876 | |
| 877 | void |
| 878 | _bfd_set_gp_value (bfd *abfd, bfd_vma v) |
| 879 | { |
| 880 | if (! abfd) |
| 881 | BFD_FAIL (); |
| 882 | if (abfd->format != bfd_object) |
| 883 | return; |
| 884 | |
| 885 | if (abfd->xvec->flavour == bfd_target_ecoff_flavour) |
| 886 | ecoff_data (abfd)->gp = v; |
| 887 | else if (abfd->xvec->flavour == bfd_target_elf_flavour) |
| 888 | elf_gp (abfd) = v; |
| 889 | } |
| 890 | |
| 891 | /* |
| 892 | FUNCTION |
| 893 | bfd_scan_vma |
| 894 | |
| 895 | SYNOPSIS |
| 896 | bfd_vma bfd_scan_vma (const char *string, const char **end, int base); |
| 897 | |
| 898 | DESCRIPTION |
| 899 | Convert, like <<strtoul>>, a numerical expression |
| 900 | @var{string} into a <<bfd_vma>> integer, and return that integer. |
| 901 | (Though without as many bells and whistles as <<strtoul>>.) |
| 902 | The expression is assumed to be unsigned (i.e., positive). |
| 903 | If given a @var{base}, it is used as the base for conversion. |
| 904 | A base of 0 causes the function to interpret the string |
| 905 | in hex if a leading "0x" or "0X" is found, otherwise |
| 906 | in octal if a leading zero is found, otherwise in decimal. |
| 907 | |
| 908 | If the value would overflow, the maximum <<bfd_vma>> value is |
| 909 | returned. |
| 910 | */ |
| 911 | |
| 912 | bfd_vma |
| 913 | bfd_scan_vma (const char *string, const char **end, int base) |
| 914 | { |
| 915 | bfd_vma value; |
| 916 | bfd_vma cutoff; |
| 917 | unsigned int cutlim; |
| 918 | int overflow; |
| 919 | |
| 920 | /* Let the host do it if possible. */ |
| 921 | if (sizeof (bfd_vma) <= sizeof (unsigned long)) |
| 922 | return strtoul (string, (char **) end, base); |
| 923 | |
| 924 | #ifdef HAVE_STRTOULL |
| 925 | if (sizeof (bfd_vma) <= sizeof (unsigned long long)) |
| 926 | return strtoull (string, (char **) end, base); |
| 927 | #endif |
| 928 | |
| 929 | if (base == 0) |
| 930 | { |
| 931 | if (string[0] == '0') |
| 932 | { |
| 933 | if ((string[1] == 'x') || (string[1] == 'X')) |
| 934 | base = 16; |
| 935 | else |
| 936 | base = 8; |
| 937 | } |
| 938 | } |
| 939 | |
| 940 | if ((base < 2) || (base > 36)) |
| 941 | base = 10; |
| 942 | |
| 943 | if (base == 16 |
| 944 | && string[0] == '0' |
| 945 | && (string[1] == 'x' || string[1] == 'X') |
| 946 | && ISXDIGIT (string[2])) |
| 947 | { |
| 948 | string += 2; |
| 949 | } |
| 950 | |
| 951 | cutoff = (~ (bfd_vma) 0) / (bfd_vma) base; |
| 952 | cutlim = (~ (bfd_vma) 0) % (bfd_vma) base; |
| 953 | value = 0; |
| 954 | overflow = 0; |
| 955 | while (1) |
| 956 | { |
| 957 | unsigned int digit; |
| 958 | |
| 959 | digit = *string; |
| 960 | if (ISDIGIT (digit)) |
| 961 | digit = digit - '0'; |
| 962 | else if (ISALPHA (digit)) |
| 963 | digit = TOUPPER (digit) - 'A' + 10; |
| 964 | else |
| 965 | break; |
| 966 | if (digit >= (unsigned int) base) |
| 967 | break; |
| 968 | if (value > cutoff || (value == cutoff && digit > cutlim)) |
| 969 | overflow = 1; |
| 970 | value = value * base + digit; |
| 971 | ++string; |
| 972 | } |
| 973 | |
| 974 | if (overflow) |
| 975 | value = ~ (bfd_vma) 0; |
| 976 | |
| 977 | if (end != NULL) |
| 978 | *end = string; |
| 979 | |
| 980 | return value; |
| 981 | } |
| 982 | |
| 983 | /* |
| 984 | FUNCTION |
| 985 | bfd_copy_private_header_data |
| 986 | |
| 987 | SYNOPSIS |
| 988 | bfd_boolean bfd_copy_private_header_data (bfd *ibfd, bfd *obfd); |
| 989 | |
| 990 | DESCRIPTION |
| 991 | Copy private BFD header information from the BFD @var{ibfd} to the |
| 992 | the BFD @var{obfd}. This copies information that may require |
| 993 | sections to exist, but does not require symbol tables. Return |
| 994 | <<true>> on success, <<false>> on error. |
| 995 | Possible error returns are: |
| 996 | |
| 997 | o <<bfd_error_no_memory>> - |
| 998 | Not enough memory exists to create private data for @var{obfd}. |
| 999 | |
| 1000 | .#define bfd_copy_private_header_data(ibfd, obfd) \ |
| 1001 | . BFD_SEND (obfd, _bfd_copy_private_header_data, \ |
| 1002 | . (ibfd, obfd)) |
| 1003 | |
| 1004 | */ |
| 1005 | |
| 1006 | /* |
| 1007 | FUNCTION |
| 1008 | bfd_copy_private_bfd_data |
| 1009 | |
| 1010 | SYNOPSIS |
| 1011 | bfd_boolean bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd); |
| 1012 | |
| 1013 | DESCRIPTION |
| 1014 | Copy private BFD information from the BFD @var{ibfd} to the |
| 1015 | the BFD @var{obfd}. Return <<TRUE>> on success, <<FALSE>> on error. |
| 1016 | Possible error returns are: |
| 1017 | |
| 1018 | o <<bfd_error_no_memory>> - |
| 1019 | Not enough memory exists to create private data for @var{obfd}. |
| 1020 | |
| 1021 | .#define bfd_copy_private_bfd_data(ibfd, obfd) \ |
| 1022 | . BFD_SEND (obfd, _bfd_copy_private_bfd_data, \ |
| 1023 | . (ibfd, obfd)) |
| 1024 | |
| 1025 | */ |
| 1026 | |
| 1027 | /* |
| 1028 | FUNCTION |
| 1029 | bfd_merge_private_bfd_data |
| 1030 | |
| 1031 | SYNOPSIS |
| 1032 | bfd_boolean bfd_merge_private_bfd_data (bfd *ibfd, bfd *obfd); |
| 1033 | |
| 1034 | DESCRIPTION |
| 1035 | Merge private BFD information from the BFD @var{ibfd} to the |
| 1036 | the output file BFD @var{obfd} when linking. Return <<TRUE>> |
| 1037 | on success, <<FALSE>> on error. Possible error returns are: |
| 1038 | |
| 1039 | o <<bfd_error_no_memory>> - |
| 1040 | Not enough memory exists to create private data for @var{obfd}. |
| 1041 | |
| 1042 | .#define bfd_merge_private_bfd_data(ibfd, obfd) \ |
| 1043 | . BFD_SEND (obfd, _bfd_merge_private_bfd_data, \ |
| 1044 | . (ibfd, obfd)) |
| 1045 | |
| 1046 | */ |
| 1047 | |
| 1048 | /* |
| 1049 | FUNCTION |
| 1050 | bfd_set_private_flags |
| 1051 | |
| 1052 | SYNOPSIS |
| 1053 | bfd_boolean bfd_set_private_flags (bfd *abfd, flagword flags); |
| 1054 | |
| 1055 | DESCRIPTION |
| 1056 | Set private BFD flag information in the BFD @var{abfd}. |
| 1057 | Return <<TRUE>> on success, <<FALSE>> on error. Possible error |
| 1058 | returns are: |
| 1059 | |
| 1060 | o <<bfd_error_no_memory>> - |
| 1061 | Not enough memory exists to create private data for @var{obfd}. |
| 1062 | |
| 1063 | .#define bfd_set_private_flags(abfd, flags) \ |
| 1064 | . BFD_SEND (abfd, _bfd_set_private_flags, (abfd, flags)) |
| 1065 | |
| 1066 | */ |
| 1067 | |
| 1068 | /* |
| 1069 | FUNCTION |
| 1070 | Other functions |
| 1071 | |
| 1072 | DESCRIPTION |
| 1073 | The following functions exist but have not yet been documented. |
| 1074 | |
| 1075 | .#define bfd_sizeof_headers(abfd, reloc) \ |
| 1076 | . BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, reloc)) |
| 1077 | . |
| 1078 | .#define bfd_find_nearest_line(abfd, sec, syms, off, file, func, line) \ |
| 1079 | . BFD_SEND (abfd, _bfd_find_nearest_line, \ |
| 1080 | . (abfd, sec, syms, off, file, func, line)) |
| 1081 | . |
| 1082 | .#define bfd_debug_info_start(abfd) \ |
| 1083 | . BFD_SEND (abfd, _bfd_debug_info_start, (abfd)) |
| 1084 | . |
| 1085 | .#define bfd_debug_info_end(abfd) \ |
| 1086 | . BFD_SEND (abfd, _bfd_debug_info_end, (abfd)) |
| 1087 | . |
| 1088 | .#define bfd_debug_info_accumulate(abfd, section) \ |
| 1089 | . BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section)) |
| 1090 | . |
| 1091 | .#define bfd_stat_arch_elt(abfd, stat) \ |
| 1092 | . BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat)) |
| 1093 | . |
| 1094 | .#define bfd_update_armap_timestamp(abfd) \ |
| 1095 | . BFD_SEND (abfd, _bfd_update_armap_timestamp, (abfd)) |
| 1096 | . |
| 1097 | .#define bfd_set_arch_mach(abfd, arch, mach)\ |
| 1098 | . BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach)) |
| 1099 | . |
| 1100 | .#define bfd_relax_section(abfd, section, link_info, again) \ |
| 1101 | . BFD_SEND (abfd, _bfd_relax_section, (abfd, section, link_info, again)) |
| 1102 | . |
| 1103 | .#define bfd_gc_sections(abfd, link_info) \ |
| 1104 | . BFD_SEND (abfd, _bfd_gc_sections, (abfd, link_info)) |
| 1105 | . |
| 1106 | .#define bfd_merge_sections(abfd, link_info) \ |
| 1107 | . BFD_SEND (abfd, _bfd_merge_sections, (abfd, link_info)) |
| 1108 | . |
| 1109 | .#define bfd_is_group_section(abfd, sec) \ |
| 1110 | . BFD_SEND (abfd, _bfd_is_group_section, (abfd, sec)) |
| 1111 | . |
| 1112 | .#define bfd_discard_group(abfd, sec) \ |
| 1113 | . BFD_SEND (abfd, _bfd_discard_group, (abfd, sec)) |
| 1114 | . |
| 1115 | .#define bfd_link_hash_table_create(abfd) \ |
| 1116 | . BFD_SEND (abfd, _bfd_link_hash_table_create, (abfd)) |
| 1117 | . |
| 1118 | .#define bfd_link_hash_table_free(abfd, hash) \ |
| 1119 | . BFD_SEND (abfd, _bfd_link_hash_table_free, (hash)) |
| 1120 | . |
| 1121 | .#define bfd_link_add_symbols(abfd, info) \ |
| 1122 | . BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info)) |
| 1123 | . |
| 1124 | .#define bfd_link_just_syms(sec, info) \ |
| 1125 | . BFD_SEND (abfd, _bfd_link_just_syms, (sec, info)) |
| 1126 | . |
| 1127 | .#define bfd_final_link(abfd, info) \ |
| 1128 | . BFD_SEND (abfd, _bfd_final_link, (abfd, info)) |
| 1129 | . |
| 1130 | .#define bfd_free_cached_info(abfd) \ |
| 1131 | . BFD_SEND (abfd, _bfd_free_cached_info, (abfd)) |
| 1132 | . |
| 1133 | .#define bfd_get_dynamic_symtab_upper_bound(abfd) \ |
| 1134 | . BFD_SEND (abfd, _bfd_get_dynamic_symtab_upper_bound, (abfd)) |
| 1135 | . |
| 1136 | .#define bfd_print_private_bfd_data(abfd, file)\ |
| 1137 | . BFD_SEND (abfd, _bfd_print_private_bfd_data, (abfd, file)) |
| 1138 | . |
| 1139 | .#define bfd_canonicalize_dynamic_symtab(abfd, asymbols) \ |
| 1140 | . BFD_SEND (abfd, _bfd_canonicalize_dynamic_symtab, (abfd, asymbols)) |
| 1141 | . |
| 1142 | .#define bfd_get_synthetic_symtab(abfd, dynsyms, ret) \ |
| 1143 | . BFD_SEND (abfd, _bfd_get_synthetic_symtab, (abfd, dynsyms, ret)) |
| 1144 | . |
| 1145 | .#define bfd_get_dynamic_reloc_upper_bound(abfd) \ |
| 1146 | . BFD_SEND (abfd, _bfd_get_dynamic_reloc_upper_bound, (abfd)) |
| 1147 | . |
| 1148 | .#define bfd_canonicalize_dynamic_reloc(abfd, arels, asyms) \ |
| 1149 | . BFD_SEND (abfd, _bfd_canonicalize_dynamic_reloc, (abfd, arels, asyms)) |
| 1150 | . |
| 1151 | .extern bfd_byte *bfd_get_relocated_section_contents |
| 1152 | . (bfd *, struct bfd_link_info *, struct bfd_link_order *, bfd_byte *, |
| 1153 | . bfd_boolean, asymbol **); |
| 1154 | . |
| 1155 | |
| 1156 | */ |
| 1157 | |
| 1158 | bfd_byte * |
| 1159 | bfd_get_relocated_section_contents (bfd *abfd, |
| 1160 | struct bfd_link_info *link_info, |
| 1161 | struct bfd_link_order *link_order, |
| 1162 | bfd_byte *data, |
| 1163 | bfd_boolean relocatable, |
| 1164 | asymbol **symbols) |
| 1165 | { |
| 1166 | bfd *abfd2; |
| 1167 | bfd_byte *(*fn) (bfd *, struct bfd_link_info *, struct bfd_link_order *, |
| 1168 | bfd_byte *, bfd_boolean, asymbol **); |
| 1169 | |
| 1170 | if (link_order->type == bfd_indirect_link_order) |
| 1171 | { |
| 1172 | abfd2 = link_order->u.indirect.section->owner; |
| 1173 | if (abfd2 == NULL) |
| 1174 | abfd2 = abfd; |
| 1175 | } |
| 1176 | else |
| 1177 | abfd2 = abfd; |
| 1178 | |
| 1179 | fn = abfd2->xvec->_bfd_get_relocated_section_contents; |
| 1180 | |
| 1181 | return (*fn) (abfd, link_info, link_order, data, relocatable, symbols); |
| 1182 | } |
| 1183 | |
| 1184 | /* Record information about an ELF program header. */ |
| 1185 | |
| 1186 | bfd_boolean |
| 1187 | bfd_record_phdr (bfd *abfd, |
| 1188 | unsigned long type, |
| 1189 | bfd_boolean flags_valid, |
| 1190 | flagword flags, |
| 1191 | bfd_boolean at_valid, |
| 1192 | bfd_vma at, |
| 1193 | bfd_boolean includes_filehdr, |
| 1194 | bfd_boolean includes_phdrs, |
| 1195 | unsigned int count, |
| 1196 | asection **secs) |
| 1197 | { |
| 1198 | struct elf_segment_map *m, **pm; |
| 1199 | bfd_size_type amt; |
| 1200 | |
| 1201 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour) |
| 1202 | return TRUE; |
| 1203 | |
| 1204 | amt = sizeof (struct elf_segment_map); |
| 1205 | amt += ((bfd_size_type) count - 1) * sizeof (asection *); |
| 1206 | m = bfd_alloc (abfd, amt); |
| 1207 | if (m == NULL) |
| 1208 | return FALSE; |
| 1209 | |
| 1210 | m->next = NULL; |
| 1211 | m->p_type = type; |
| 1212 | m->p_flags = flags; |
| 1213 | m->p_paddr = at; |
| 1214 | m->p_flags_valid = flags_valid; |
| 1215 | m->p_paddr_valid = at_valid; |
| 1216 | m->includes_filehdr = includes_filehdr; |
| 1217 | m->includes_phdrs = includes_phdrs; |
| 1218 | m->count = count; |
| 1219 | if (count > 0) |
| 1220 | memcpy (m->sections, secs, count * sizeof (asection *)); |
| 1221 | |
| 1222 | for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next) |
| 1223 | ; |
| 1224 | *pm = m; |
| 1225 | |
| 1226 | return TRUE; |
| 1227 | } |
| 1228 | |
| 1229 | void |
| 1230 | bfd_sprintf_vma (bfd *abfd, char *buf, bfd_vma value) |
| 1231 | { |
| 1232 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) |
| 1233 | get_elf_backend_data (abfd)->elf_backend_sprintf_vma (abfd, buf, value); |
| 1234 | else |
| 1235 | sprintf_vma (buf, value); |
| 1236 | } |
| 1237 | |
| 1238 | void |
| 1239 | bfd_fprintf_vma (bfd *abfd, void *stream, bfd_vma value) |
| 1240 | { |
| 1241 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) |
| 1242 | get_elf_backend_data (abfd)->elf_backend_fprintf_vma (abfd, stream, value); |
| 1243 | else |
| 1244 | fprintf_vma ((FILE *) stream, value); |
| 1245 | } |
| 1246 | |
| 1247 | /* |
| 1248 | FUNCTION |
| 1249 | bfd_alt_mach_code |
| 1250 | |
| 1251 | SYNOPSIS |
| 1252 | bfd_boolean bfd_alt_mach_code (bfd *abfd, int alternative); |
| 1253 | |
| 1254 | DESCRIPTION |
| 1255 | |
| 1256 | When more than one machine code number is available for the |
| 1257 | same machine type, this function can be used to switch between |
| 1258 | the preferred one (alternative == 0) and any others. Currently, |
| 1259 | only ELF supports this feature, with up to two alternate |
| 1260 | machine codes. |
| 1261 | */ |
| 1262 | |
| 1263 | bfd_boolean |
| 1264 | bfd_alt_mach_code (bfd *abfd, int alternative) |
| 1265 | { |
| 1266 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) |
| 1267 | { |
| 1268 | int code; |
| 1269 | |
| 1270 | switch (alternative) |
| 1271 | { |
| 1272 | case 0: |
| 1273 | code = get_elf_backend_data (abfd)->elf_machine_code; |
| 1274 | break; |
| 1275 | |
| 1276 | case 1: |
| 1277 | code = get_elf_backend_data (abfd)->elf_machine_alt1; |
| 1278 | if (code == 0) |
| 1279 | return FALSE; |
| 1280 | break; |
| 1281 | |
| 1282 | case 2: |
| 1283 | code = get_elf_backend_data (abfd)->elf_machine_alt2; |
| 1284 | if (code == 0) |
| 1285 | return FALSE; |
| 1286 | break; |
| 1287 | |
| 1288 | default: |
| 1289 | return FALSE; |
| 1290 | } |
| 1291 | |
| 1292 | elf_elfheader (abfd)->e_machine = code; |
| 1293 | |
| 1294 | return TRUE; |
| 1295 | } |
| 1296 | |
| 1297 | return FALSE; |
| 1298 | } |
| 1299 | |
| 1300 | /* |
| 1301 | CODE_FRAGMENT |
| 1302 | |
| 1303 | .struct bfd_preserve |
| 1304 | .{ |
| 1305 | . void *marker; |
| 1306 | . void *tdata; |
| 1307 | . flagword flags; |
| 1308 | . const struct bfd_arch_info *arch_info; |
| 1309 | . struct bfd_section *sections; |
| 1310 | . struct bfd_section **section_tail; |
| 1311 | . unsigned int section_count; |
| 1312 | . struct bfd_hash_table section_htab; |
| 1313 | .}; |
| 1314 | . |
| 1315 | */ |
| 1316 | |
| 1317 | /* |
| 1318 | FUNCTION |
| 1319 | bfd_preserve_save |
| 1320 | |
| 1321 | SYNOPSIS |
| 1322 | bfd_boolean bfd_preserve_save (bfd *, struct bfd_preserve *); |
| 1323 | |
| 1324 | DESCRIPTION |
| 1325 | When testing an object for compatibility with a particular |
| 1326 | target back-end, the back-end object_p function needs to set |
| 1327 | up certain fields in the bfd on successfully recognizing the |
| 1328 | object. This typically happens in a piecemeal fashion, with |
| 1329 | failures possible at many points. On failure, the bfd is |
| 1330 | supposed to be restored to its initial state, which is |
| 1331 | virtually impossible. However, restoring a subset of the bfd |
| 1332 | state works in practice. This function stores the subset and |
| 1333 | reinitializes the bfd. |
| 1334 | |
| 1335 | */ |
| 1336 | |
| 1337 | bfd_boolean |
| 1338 | bfd_preserve_save (bfd *abfd, struct bfd_preserve *preserve) |
| 1339 | { |
| 1340 | preserve->tdata = abfd->tdata.any; |
| 1341 | preserve->arch_info = abfd->arch_info; |
| 1342 | preserve->flags = abfd->flags; |
| 1343 | preserve->sections = abfd->sections; |
| 1344 | preserve->section_tail = abfd->section_tail; |
| 1345 | preserve->section_count = abfd->section_count; |
| 1346 | preserve->section_htab = abfd->section_htab; |
| 1347 | |
| 1348 | if (! bfd_hash_table_init (&abfd->section_htab, bfd_section_hash_newfunc)) |
| 1349 | return FALSE; |
| 1350 | |
| 1351 | abfd->tdata.any = NULL; |
| 1352 | abfd->arch_info = &bfd_default_arch_struct; |
| 1353 | abfd->flags &= BFD_IN_MEMORY; |
| 1354 | abfd->sections = NULL; |
| 1355 | abfd->section_tail = &abfd->sections; |
| 1356 | abfd->section_count = 0; |
| 1357 | |
| 1358 | return TRUE; |
| 1359 | } |
| 1360 | |
| 1361 | /* |
| 1362 | FUNCTION |
| 1363 | bfd_preserve_restore |
| 1364 | |
| 1365 | SYNOPSIS |
| 1366 | void bfd_preserve_restore (bfd *, struct bfd_preserve *); |
| 1367 | |
| 1368 | DESCRIPTION |
| 1369 | This function restores bfd state saved by bfd_preserve_save. |
| 1370 | If MARKER is non-NULL in struct bfd_preserve then that block |
| 1371 | and all subsequently bfd_alloc'd memory is freed. |
| 1372 | |
| 1373 | */ |
| 1374 | |
| 1375 | void |
| 1376 | bfd_preserve_restore (bfd *abfd, struct bfd_preserve *preserve) |
| 1377 | { |
| 1378 | bfd_hash_table_free (&abfd->section_htab); |
| 1379 | |
| 1380 | abfd->tdata.any = preserve->tdata; |
| 1381 | abfd->arch_info = preserve->arch_info; |
| 1382 | abfd->flags = preserve->flags; |
| 1383 | abfd->section_htab = preserve->section_htab; |
| 1384 | abfd->sections = preserve->sections; |
| 1385 | abfd->section_tail = preserve->section_tail; |
| 1386 | abfd->section_count = preserve->section_count; |
| 1387 | |
| 1388 | /* bfd_release frees all memory more recently bfd_alloc'd than |
| 1389 | its arg, as well as its arg. */ |
| 1390 | if (preserve->marker != NULL) |
| 1391 | { |
| 1392 | bfd_release (abfd, preserve->marker); |
| 1393 | preserve->marker = NULL; |
| 1394 | } |
| 1395 | } |
| 1396 | |
| 1397 | /* |
| 1398 | FUNCTION |
| 1399 | bfd_preserve_finish |
| 1400 | |
| 1401 | SYNOPSIS |
| 1402 | void bfd_preserve_finish (bfd *, struct bfd_preserve *); |
| 1403 | |
| 1404 | DESCRIPTION |
| 1405 | This function should be called when the bfd state saved by |
| 1406 | bfd_preserve_save is no longer needed. ie. when the back-end |
| 1407 | object_p function returns with success. |
| 1408 | |
| 1409 | */ |
| 1410 | |
| 1411 | void |
| 1412 | bfd_preserve_finish (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_preserve *preserve) |
| 1413 | { |
| 1414 | /* It would be nice to be able to free more memory here, eg. old |
| 1415 | tdata, but that's not possible since these blocks are sitting |
| 1416 | inside bfd_alloc'd memory. The section hash is on a separate |
| 1417 | objalloc. */ |
| 1418 | bfd_hash_table_free (&preserve->section_htab); |
| 1419 | } |