| 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, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
| 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 3 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., 51 Franklin Street - Fifth Floor, Boston, |
| 22 | MA 02110-1301, USA. */ |
| 23 | |
| 24 | /* |
| 25 | SECTION |
| 26 | <<typedef bfd>> |
| 27 | |
| 28 | A BFD has type <<bfd>>; objects of this type are the |
| 29 | cornerstone of any application using BFD. Using BFD |
| 30 | consists of making references though the BFD and to data in the BFD. |
| 31 | |
| 32 | Here is the structure that defines the type <<bfd>>. It |
| 33 | contains the major data about the file and pointers |
| 34 | to the rest of the data. |
| 35 | |
| 36 | CODE_FRAGMENT |
| 37 | . |
| 38 | .enum bfd_direction |
| 39 | . { |
| 40 | . no_direction = 0, |
| 41 | . read_direction = 1, |
| 42 | . write_direction = 2, |
| 43 | . both_direction = 3 |
| 44 | . }; |
| 45 | . |
| 46 | .struct bfd |
| 47 | .{ |
| 48 | . {* A unique identifier of the BFD *} |
| 49 | . unsigned int id; |
| 50 | . |
| 51 | . {* The filename the application opened the BFD with. *} |
| 52 | . const char *filename; |
| 53 | . |
| 54 | . {* A pointer to the target jump table. *} |
| 55 | . const struct bfd_target *xvec; |
| 56 | . |
| 57 | . {* The IOSTREAM, and corresponding IO vector that provide access |
| 58 | . to the file backing the BFD. *} |
| 59 | . void *iostream; |
| 60 | . const struct bfd_iovec *iovec; |
| 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 | . {* File modified time, if mtime_set is TRUE. *} |
| 71 | . long mtime; |
| 72 | . |
| 73 | . {* Reserved for an unimplemented file locking extension. *} |
| 74 | . int ifd; |
| 75 | . |
| 76 | . {* The format which belongs to the BFD. (object, core, etc.) *} |
| 77 | . bfd_format format; |
| 78 | . |
| 79 | . {* The direction with which the BFD was opened. *} |
| 80 | . enum bfd_direction direction; |
| 81 | . |
| 82 | . {* Format_specific flags. *} |
| 83 | . flagword flags; |
| 84 | . |
| 85 | . {* Values that may appear in the flags field of a BFD. These also |
| 86 | . appear in the object_flags field of the bfd_target structure, where |
| 87 | . they indicate the set of flags used by that backend (not all flags |
| 88 | . are meaningful for all object file formats) (FIXME: at the moment, |
| 89 | . the object_flags values have mostly just been copied from backend |
| 90 | . to another, and are not necessarily correct). *} |
| 91 | . |
| 92 | .#define BFD_NO_FLAGS 0x00 |
| 93 | . |
| 94 | . {* BFD contains relocation entries. *} |
| 95 | .#define HAS_RELOC 0x01 |
| 96 | . |
| 97 | . {* BFD is directly executable. *} |
| 98 | .#define EXEC_P 0x02 |
| 99 | . |
| 100 | . {* BFD has line number information (basically used for F_LNNO in a |
| 101 | . COFF header). *} |
| 102 | .#define HAS_LINENO 0x04 |
| 103 | . |
| 104 | . {* BFD has debugging information. *} |
| 105 | .#define HAS_DEBUG 0x08 |
| 106 | . |
| 107 | . {* BFD has symbols. *} |
| 108 | .#define HAS_SYMS 0x10 |
| 109 | . |
| 110 | . {* BFD has local symbols (basically used for F_LSYMS in a COFF |
| 111 | . header). *} |
| 112 | .#define HAS_LOCALS 0x20 |
| 113 | . |
| 114 | . {* BFD is a dynamic object. *} |
| 115 | .#define DYNAMIC 0x40 |
| 116 | . |
| 117 | . {* Text section is write protected (if D_PAGED is not set, this is |
| 118 | . like an a.out NMAGIC file) (the linker sets this by default, but |
| 119 | . clears it for -r or -N). *} |
| 120 | .#define WP_TEXT 0x80 |
| 121 | . |
| 122 | . {* BFD is dynamically paged (this is like an a.out ZMAGIC file) (the |
| 123 | . linker sets this by default, but clears it for -r or -n or -N). *} |
| 124 | .#define D_PAGED 0x100 |
| 125 | . |
| 126 | . {* BFD is relaxable (this means that bfd_relax_section may be able to |
| 127 | . do something) (sometimes bfd_relax_section can do something even if |
| 128 | . this is not set). *} |
| 129 | .#define BFD_IS_RELAXABLE 0x200 |
| 130 | . |
| 131 | . {* This may be set before writing out a BFD to request using a |
| 132 | . traditional format. For example, this is used to request that when |
| 133 | . writing out an a.out object the symbols not be hashed to eliminate |
| 134 | . duplicates. *} |
| 135 | .#define BFD_TRADITIONAL_FORMAT 0x400 |
| 136 | . |
| 137 | . {* This flag indicates that the BFD contents are actually cached |
| 138 | . in memory. If this is set, iostream points to a bfd_in_memory |
| 139 | . struct. *} |
| 140 | .#define BFD_IN_MEMORY 0x800 |
| 141 | . |
| 142 | . {* The sections in this BFD specify a memory page. *} |
| 143 | .#define HAS_LOAD_PAGE 0x1000 |
| 144 | . |
| 145 | . {* This BFD has been created by the linker and doesn't correspond |
| 146 | . to any input file. *} |
| 147 | .#define BFD_LINKER_CREATED 0x2000 |
| 148 | . |
| 149 | . {* This may be set before writing out a BFD to request that it |
| 150 | . be written using values for UIDs, GIDs, timestamps, etc. that |
| 151 | . will be consistent from run to run. *} |
| 152 | .#define BFD_DETERMINISTIC_OUTPUT 0x4000 |
| 153 | . |
| 154 | . {* Compress sections in this BFD. *} |
| 155 | .#define BFD_COMPRESS 0x8000 |
| 156 | . |
| 157 | . {* Decompress sections in this BFD. *} |
| 158 | .#define BFD_DECOMPRESS 0x10000 |
| 159 | . |
| 160 | . {* BFD is a dummy, for plugins. *} |
| 161 | .#define BFD_PLUGIN 0x20000 |
| 162 | . |
| 163 | . {* Flags bits to be saved in bfd_preserve_save. *} |
| 164 | .#define BFD_FLAGS_SAVED \ |
| 165 | . (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS | BFD_PLUGIN) |
| 166 | . |
| 167 | . {* Flags bits which are for BFD use only. *} |
| 168 | .#define BFD_FLAGS_FOR_BFD_USE_MASK \ |
| 169 | . (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS | BFD_LINKER_CREATED \ |
| 170 | . | BFD_PLUGIN | BFD_TRADITIONAL_FORMAT | BFD_DETERMINISTIC_OUTPUT) |
| 171 | . |
| 172 | . {* Currently my_archive is tested before adding origin to |
| 173 | . anything. I believe that this can become always an add of |
| 174 | . origin, with origin set to 0 for non archive files. *} |
| 175 | . ufile_ptr origin; |
| 176 | . |
| 177 | . {* The origin in the archive of the proxy entry. This will |
| 178 | . normally be the same as origin, except for thin archives, |
| 179 | . when it will contain the current offset of the proxy in the |
| 180 | . thin archive rather than the offset of the bfd in its actual |
| 181 | . container. *} |
| 182 | . ufile_ptr proxy_origin; |
| 183 | . |
| 184 | . {* A hash table for section names. *} |
| 185 | . struct bfd_hash_table section_htab; |
| 186 | . |
| 187 | . {* Pointer to linked list of sections. *} |
| 188 | . struct bfd_section *sections; |
| 189 | . |
| 190 | . {* The last section on the section list. *} |
| 191 | . struct bfd_section *section_last; |
| 192 | . |
| 193 | . {* The number of sections. *} |
| 194 | . unsigned int section_count; |
| 195 | . |
| 196 | . {* Stuff only useful for object files: |
| 197 | . The start address. *} |
| 198 | . bfd_vma start_address; |
| 199 | . |
| 200 | . {* Used for input and output. *} |
| 201 | . unsigned int symcount; |
| 202 | . |
| 203 | . {* Symbol table for output BFD (with symcount entries). |
| 204 | . Also used by the linker to cache input BFD symbols. *} |
| 205 | . struct bfd_symbol **outsymbols; |
| 206 | . |
| 207 | . {* Used for slurped dynamic symbol tables. *} |
| 208 | . unsigned int dynsymcount; |
| 209 | . |
| 210 | . {* Pointer to structure which contains architecture information. *} |
| 211 | . const struct bfd_arch_info *arch_info; |
| 212 | . |
| 213 | . {* Stuff only useful for archives. *} |
| 214 | . void *arelt_data; |
| 215 | . struct bfd *my_archive; {* The containing archive BFD. *} |
| 216 | . struct bfd *archive_next; {* The next BFD in the archive. *} |
| 217 | . struct bfd *archive_head; {* The first BFD in the archive. *} |
| 218 | . struct bfd *nested_archives; {* List of nested archive in a flattened |
| 219 | . thin archive. *} |
| 220 | . |
| 221 | . {* A chain of BFD structures involved in a link. *} |
| 222 | . struct bfd *link_next; |
| 223 | . |
| 224 | . {* A field used by _bfd_generic_link_add_archive_symbols. This will |
| 225 | . be used only for archive elements. *} |
| 226 | . int archive_pass; |
| 227 | . |
| 228 | . {* Used by the back end to hold private data. *} |
| 229 | . union |
| 230 | . { |
| 231 | . struct aout_data_struct *aout_data; |
| 232 | . struct artdata *aout_ar_data; |
| 233 | . struct _oasys_data *oasys_obj_data; |
| 234 | . struct _oasys_ar_data *oasys_ar_data; |
| 235 | . struct coff_tdata *coff_obj_data; |
| 236 | . struct pe_tdata *pe_obj_data; |
| 237 | . struct xcoff_tdata *xcoff_obj_data; |
| 238 | . struct ecoff_tdata *ecoff_obj_data; |
| 239 | . struct ieee_data_struct *ieee_data; |
| 240 | . struct ieee_ar_data_struct *ieee_ar_data; |
| 241 | . struct srec_data_struct *srec_data; |
| 242 | . struct verilog_data_struct *verilog_data; |
| 243 | . struct ihex_data_struct *ihex_data; |
| 244 | . struct tekhex_data_struct *tekhex_data; |
| 245 | . struct elf_obj_tdata *elf_obj_data; |
| 246 | . struct nlm_obj_tdata *nlm_obj_data; |
| 247 | . struct bout_data_struct *bout_data; |
| 248 | . struct mmo_data_struct *mmo_data; |
| 249 | . struct sun_core_struct *sun_core_data; |
| 250 | . struct sco5_core_struct *sco5_core_data; |
| 251 | . struct trad_core_struct *trad_core_data; |
| 252 | . struct som_data_struct *som_data; |
| 253 | . struct hpux_core_struct *hpux_core_data; |
| 254 | . struct hppabsd_core_struct *hppabsd_core_data; |
| 255 | . struct sgi_core_struct *sgi_core_data; |
| 256 | . struct lynx_core_struct *lynx_core_data; |
| 257 | . struct osf_core_struct *osf_core_data; |
| 258 | . struct cisco_core_struct *cisco_core_data; |
| 259 | . struct versados_data_struct *versados_data; |
| 260 | . struct netbsd_core_struct *netbsd_core_data; |
| 261 | . struct mach_o_data_struct *mach_o_data; |
| 262 | . struct mach_o_fat_data_struct *mach_o_fat_data; |
| 263 | . struct plugin_data_struct *plugin_data; |
| 264 | . struct bfd_pef_data_struct *pef_data; |
| 265 | . struct bfd_pef_xlib_data_struct *pef_xlib_data; |
| 266 | . struct bfd_sym_data_struct *sym_data; |
| 267 | . void *any; |
| 268 | . } |
| 269 | . tdata; |
| 270 | . |
| 271 | . {* Used by the application to hold private data. *} |
| 272 | . void *usrdata; |
| 273 | . |
| 274 | . {* Where all the allocated stuff under this BFD goes. This is a |
| 275 | . struct objalloc *, but we use void * to avoid requiring the inclusion |
| 276 | . of objalloc.h. *} |
| 277 | . void *memory; |
| 278 | . |
| 279 | . {* Is the file descriptor being cached? That is, can it be closed as |
| 280 | . needed, and re-opened when accessed later? *} |
| 281 | . unsigned int cacheable : 1; |
| 282 | . |
| 283 | . {* Marks whether there was a default target specified when the |
| 284 | . BFD was opened. This is used to select which matching algorithm |
| 285 | . to use to choose the back end. *} |
| 286 | . unsigned int target_defaulted : 1; |
| 287 | . |
| 288 | . {* ... and here: (``once'' means at least once). *} |
| 289 | . unsigned int opened_once : 1; |
| 290 | . |
| 291 | . {* Set if we have a locally maintained mtime value, rather than |
| 292 | . getting it from the file each time. *} |
| 293 | . unsigned int mtime_set : 1; |
| 294 | . |
| 295 | . {* Flag set if symbols from this BFD should not be exported. *} |
| 296 | . unsigned int no_export : 1; |
| 297 | . |
| 298 | . {* Remember when output has begun, to stop strange things |
| 299 | . from happening. *} |
| 300 | . unsigned int output_has_begun : 1; |
| 301 | . |
| 302 | . {* Have archive map. *} |
| 303 | . unsigned int has_armap : 1; |
| 304 | . |
| 305 | . {* Set if this is a thin archive. *} |
| 306 | . unsigned int is_thin_archive : 1; |
| 307 | . |
| 308 | . {* Set if only required symbols should be added in the link hash table for |
| 309 | . this object. Used by VMS linkers. *} |
| 310 | . unsigned int selective_search : 1; |
| 311 | .}; |
| 312 | . |
| 313 | */ |
| 314 | |
| 315 | #include "sysdep.h" |
| 316 | #include <stdarg.h> |
| 317 | #include "bfd.h" |
| 318 | #include "bfdver.h" |
| 319 | #include "libiberty.h" |
| 320 | #include "demangle.h" |
| 321 | #include "safe-ctype.h" |
| 322 | #include "bfdlink.h" |
| 323 | #include "libbfd.h" |
| 324 | #include "coff/internal.h" |
| 325 | #include "coff/sym.h" |
| 326 | #include "libcoff.h" |
| 327 | #include "libecoff.h" |
| 328 | #undef obj_symbols |
| 329 | #include "elf-bfd.h" |
| 330 | |
| 331 | #ifndef EXIT_FAILURE |
| 332 | #define EXIT_FAILURE 1 |
| 333 | #endif |
| 334 | |
| 335 | \f |
| 336 | /* provide storage for subsystem, stack and heap data which may have been |
| 337 | passed in on the command line. Ld puts this data into a bfd_link_info |
| 338 | struct which ultimately gets passed in to the bfd. When it arrives, copy |
| 339 | it to the following struct so that the data will be available in coffcode.h |
| 340 | where it is needed. The typedef's used are defined in bfd.h */ |
| 341 | \f |
| 342 | /* |
| 343 | SECTION |
| 344 | Error reporting |
| 345 | |
| 346 | Most BFD functions return nonzero on success (check their |
| 347 | individual documentation for precise semantics). On an error, |
| 348 | they call <<bfd_set_error>> to set an error condition that callers |
| 349 | can check by calling <<bfd_get_error>>. |
| 350 | If that returns <<bfd_error_system_call>>, then check |
| 351 | <<errno>>. |
| 352 | |
| 353 | The easiest way to report a BFD error to the user is to |
| 354 | use <<bfd_perror>>. |
| 355 | |
| 356 | SUBSECTION |
| 357 | Type <<bfd_error_type>> |
| 358 | |
| 359 | The values returned by <<bfd_get_error>> are defined by the |
| 360 | enumerated type <<bfd_error_type>>. |
| 361 | |
| 362 | CODE_FRAGMENT |
| 363 | . |
| 364 | .typedef enum bfd_error |
| 365 | .{ |
| 366 | . bfd_error_no_error = 0, |
| 367 | . bfd_error_system_call, |
| 368 | . bfd_error_invalid_target, |
| 369 | . bfd_error_wrong_format, |
| 370 | . bfd_error_wrong_object_format, |
| 371 | . bfd_error_invalid_operation, |
| 372 | . bfd_error_no_memory, |
| 373 | . bfd_error_no_symbols, |
| 374 | . bfd_error_no_armap, |
| 375 | . bfd_error_no_more_archived_files, |
| 376 | . bfd_error_malformed_archive, |
| 377 | . bfd_error_file_not_recognized, |
| 378 | . bfd_error_file_ambiguously_recognized, |
| 379 | . bfd_error_no_contents, |
| 380 | . bfd_error_nonrepresentable_section, |
| 381 | . bfd_error_no_debug_section, |
| 382 | . bfd_error_bad_value, |
| 383 | . bfd_error_file_truncated, |
| 384 | . bfd_error_file_too_big, |
| 385 | . bfd_error_on_input, |
| 386 | . bfd_error_invalid_error_code |
| 387 | .} |
| 388 | .bfd_error_type; |
| 389 | . |
| 390 | */ |
| 391 | |
| 392 | static bfd_error_type bfd_error = bfd_error_no_error; |
| 393 | static bfd *input_bfd = NULL; |
| 394 | static bfd_error_type input_error = bfd_error_no_error; |
| 395 | |
| 396 | const char *const bfd_errmsgs[] = |
| 397 | { |
| 398 | N_("No error"), |
| 399 | N_("System call error"), |
| 400 | N_("Invalid bfd target"), |
| 401 | N_("File in wrong format"), |
| 402 | N_("Archive object file in wrong format"), |
| 403 | N_("Invalid operation"), |
| 404 | N_("Memory exhausted"), |
| 405 | N_("No symbols"), |
| 406 | N_("Archive has no index; run ranlib to add one"), |
| 407 | N_("No more archived files"), |
| 408 | N_("Malformed archive"), |
| 409 | N_("File format not recognized"), |
| 410 | N_("File format is ambiguous"), |
| 411 | N_("Section has no contents"), |
| 412 | N_("Nonrepresentable section on output"), |
| 413 | N_("Symbol needs debug section which does not exist"), |
| 414 | N_("Bad value"), |
| 415 | N_("File truncated"), |
| 416 | N_("File too big"), |
| 417 | N_("Error reading %s: %s"), |
| 418 | N_("#<Invalid error code>") |
| 419 | }; |
| 420 | |
| 421 | /* |
| 422 | FUNCTION |
| 423 | bfd_get_error |
| 424 | |
| 425 | SYNOPSIS |
| 426 | bfd_error_type bfd_get_error (void); |
| 427 | |
| 428 | DESCRIPTION |
| 429 | Return the current BFD error condition. |
| 430 | */ |
| 431 | |
| 432 | bfd_error_type |
| 433 | bfd_get_error (void) |
| 434 | { |
| 435 | return bfd_error; |
| 436 | } |
| 437 | |
| 438 | /* |
| 439 | FUNCTION |
| 440 | bfd_set_error |
| 441 | |
| 442 | SYNOPSIS |
| 443 | void bfd_set_error (bfd_error_type error_tag, ...); |
| 444 | |
| 445 | DESCRIPTION |
| 446 | Set the BFD error condition to be @var{error_tag}. |
| 447 | If @var{error_tag} is bfd_error_on_input, then this function |
| 448 | takes two more parameters, the input bfd where the error |
| 449 | occurred, and the bfd_error_type error. |
| 450 | */ |
| 451 | |
| 452 | void |
| 453 | bfd_set_error (bfd_error_type error_tag, ...) |
| 454 | { |
| 455 | bfd_error = error_tag; |
| 456 | if (error_tag == bfd_error_on_input) |
| 457 | { |
| 458 | /* This is an error that occurred during bfd_close when |
| 459 | writing an archive, but on one of the input files. */ |
| 460 | va_list ap; |
| 461 | |
| 462 | va_start (ap, error_tag); |
| 463 | input_bfd = va_arg (ap, bfd *); |
| 464 | input_error = (bfd_error_type) va_arg (ap, int); |
| 465 | if (input_error >= bfd_error_on_input) |
| 466 | abort (); |
| 467 | va_end (ap); |
| 468 | } |
| 469 | } |
| 470 | |
| 471 | /* |
| 472 | FUNCTION |
| 473 | bfd_errmsg |
| 474 | |
| 475 | SYNOPSIS |
| 476 | const char *bfd_errmsg (bfd_error_type error_tag); |
| 477 | |
| 478 | DESCRIPTION |
| 479 | Return a string describing the error @var{error_tag}, or |
| 480 | the system error if @var{error_tag} is <<bfd_error_system_call>>. |
| 481 | */ |
| 482 | |
| 483 | const char * |
| 484 | bfd_errmsg (bfd_error_type error_tag) |
| 485 | { |
| 486 | #ifndef errno |
| 487 | extern int errno; |
| 488 | #endif |
| 489 | if (error_tag == bfd_error_on_input) |
| 490 | { |
| 491 | char *buf; |
| 492 | const char *msg = bfd_errmsg (input_error); |
| 493 | |
| 494 | if (asprintf (&buf, _(bfd_errmsgs [error_tag]), input_bfd->filename, msg) |
| 495 | != -1) |
| 496 | return buf; |
| 497 | |
| 498 | /* Ick, what to do on out of memory? */ |
| 499 | return msg; |
| 500 | } |
| 501 | |
| 502 | if (error_tag == bfd_error_system_call) |
| 503 | return xstrerror (errno); |
| 504 | |
| 505 | if (error_tag > bfd_error_invalid_error_code) |
| 506 | error_tag = bfd_error_invalid_error_code; /* sanity check */ |
| 507 | |
| 508 | return _(bfd_errmsgs [error_tag]); |
| 509 | } |
| 510 | |
| 511 | /* |
| 512 | FUNCTION |
| 513 | bfd_perror |
| 514 | |
| 515 | SYNOPSIS |
| 516 | void bfd_perror (const char *message); |
| 517 | |
| 518 | DESCRIPTION |
| 519 | Print to the standard error stream a string describing the |
| 520 | last BFD error that occurred, or the last system error if |
| 521 | the last BFD error was a system call failure. If @var{message} |
| 522 | is non-NULL and non-empty, the error string printed is preceded |
| 523 | by @var{message}, a colon, and a space. It is followed by a newline. |
| 524 | */ |
| 525 | |
| 526 | void |
| 527 | bfd_perror (const char *message) |
| 528 | { |
| 529 | fflush (stdout); |
| 530 | if (message == NULL || *message == '\0') |
| 531 | fprintf (stderr, "%s\n", bfd_errmsg (bfd_get_error ())); |
| 532 | else |
| 533 | fprintf (stderr, "%s: %s\n", message, bfd_errmsg (bfd_get_error ())); |
| 534 | fflush (stderr); |
| 535 | } |
| 536 | |
| 537 | /* |
| 538 | SUBSECTION |
| 539 | BFD error handler |
| 540 | |
| 541 | Some BFD functions want to print messages describing the |
| 542 | problem. They call a BFD error handler function. This |
| 543 | function may be overridden by the program. |
| 544 | |
| 545 | The BFD error handler acts like printf. |
| 546 | |
| 547 | CODE_FRAGMENT |
| 548 | . |
| 549 | .typedef void (*bfd_error_handler_type) (const char *, ...); |
| 550 | . |
| 551 | */ |
| 552 | |
| 553 | /* The program name used when printing BFD error messages. */ |
| 554 | |
| 555 | static const char *_bfd_error_program_name; |
| 556 | |
| 557 | /* This is the default routine to handle BFD error messages. |
| 558 | Like fprintf (stderr, ...), but also handles some extra format specifiers. |
| 559 | |
| 560 | %A section name from section. For group components, print group name too. |
| 561 | %B file name from bfd. For archive components, prints archive too. |
| 562 | |
| 563 | Note - because these two extra format specifiers require special handling |
| 564 | they are scanned for and processed in this function, before calling |
| 565 | vfprintf. This means that the *arguments* for these format specifiers |
| 566 | must be the first ones in the variable argument list, regardless of where |
| 567 | the specifiers appear in the format string. Thus for example calling |
| 568 | this function with a format string of: |
| 569 | |
| 570 | "blah %s blah %A blah %d blah %B" |
| 571 | |
| 572 | would involve passing the arguments as: |
| 573 | |
| 574 | "blah %s blah %A blah %d blah %B", |
| 575 | asection_for_the_%A, |
| 576 | bfd_for_the_%B, |
| 577 | string_for_the_%s, |
| 578 | integer_for_the_%d); |
| 579 | */ |
| 580 | |
| 581 | void |
| 582 | _bfd_default_error_handler (const char *fmt, ...) |
| 583 | { |
| 584 | va_list ap; |
| 585 | char *bufp; |
| 586 | const char *new_fmt, *p; |
| 587 | size_t avail = 1000; |
| 588 | char buf[1000]; |
| 589 | |
| 590 | /* PR 4992: Don't interrupt output being sent to stdout. */ |
| 591 | fflush (stdout); |
| 592 | |
| 593 | if (_bfd_error_program_name != NULL) |
| 594 | fprintf (stderr, "%s: ", _bfd_error_program_name); |
| 595 | else |
| 596 | fprintf (stderr, "BFD: "); |
| 597 | |
| 598 | va_start (ap, fmt); |
| 599 | new_fmt = fmt; |
| 600 | bufp = buf; |
| 601 | |
| 602 | /* Reserve enough space for the existing format string. */ |
| 603 | avail -= strlen (fmt) + 1; |
| 604 | if (avail > 1000) |
| 605 | _exit (EXIT_FAILURE); |
| 606 | |
| 607 | p = fmt; |
| 608 | while (1) |
| 609 | { |
| 610 | char *q; |
| 611 | size_t len, extra, trim; |
| 612 | |
| 613 | p = strchr (p, '%'); |
| 614 | if (p == NULL || p[1] == '\0') |
| 615 | { |
| 616 | if (new_fmt == buf) |
| 617 | { |
| 618 | len = strlen (fmt); |
| 619 | memcpy (bufp, fmt, len + 1); |
| 620 | } |
| 621 | break; |
| 622 | } |
| 623 | |
| 624 | if (p[1] == 'A' || p[1] == 'B') |
| 625 | { |
| 626 | len = p - fmt; |
| 627 | memcpy (bufp, fmt, len); |
| 628 | bufp += len; |
| 629 | fmt = p + 2; |
| 630 | new_fmt = buf; |
| 631 | |
| 632 | /* If we run out of space, tough, you lose your ridiculously |
| 633 | long file or section name. It's not safe to try to alloc |
| 634 | memory here; We might be printing an out of memory message. */ |
| 635 | if (avail == 0) |
| 636 | { |
| 637 | *bufp++ = '*'; |
| 638 | *bufp++ = '*'; |
| 639 | *bufp = '\0'; |
| 640 | } |
| 641 | else |
| 642 | { |
| 643 | if (p[1] == 'B') |
| 644 | { |
| 645 | bfd *abfd = va_arg (ap, bfd *); |
| 646 | |
| 647 | if (abfd == NULL) |
| 648 | /* Invoking %B with a null bfd pointer is an internal error. */ |
| 649 | abort (); |
| 650 | else if (abfd->my_archive) |
| 651 | snprintf (bufp, avail, "%s(%s)", |
| 652 | abfd->my_archive->filename, abfd->filename); |
| 653 | else |
| 654 | snprintf (bufp, avail, "%s", abfd->filename); |
| 655 | } |
| 656 | else |
| 657 | { |
| 658 | asection *sec = va_arg (ap, asection *); |
| 659 | bfd *abfd; |
| 660 | const char *group = NULL; |
| 661 | struct coff_comdat_info *ci; |
| 662 | |
| 663 | if (sec == NULL) |
| 664 | /* Invoking %A with a null section pointer is an internal error. */ |
| 665 | abort (); |
| 666 | abfd = sec->owner; |
| 667 | if (abfd != NULL |
| 668 | && bfd_get_flavour (abfd) == bfd_target_elf_flavour |
| 669 | && elf_next_in_group (sec) != NULL |
| 670 | && (sec->flags & SEC_GROUP) == 0) |
| 671 | group = elf_group_name (sec); |
| 672 | else if (abfd != NULL |
| 673 | && bfd_get_flavour (abfd) == bfd_target_coff_flavour |
| 674 | && (ci = bfd_coff_get_comdat_section (sec->owner, |
| 675 | sec)) != NULL) |
| 676 | group = ci->name; |
| 677 | if (group != NULL) |
| 678 | snprintf (bufp, avail, "%s[%s]", sec->name, group); |
| 679 | else |
| 680 | snprintf (bufp, avail, "%s", sec->name); |
| 681 | } |
| 682 | len = strlen (bufp); |
| 683 | avail = avail - len + 2; |
| 684 | |
| 685 | /* We need to replace any '%' we printed by "%%". |
| 686 | First count how many. */ |
| 687 | q = bufp; |
| 688 | bufp += len; |
| 689 | extra = 0; |
| 690 | while ((q = strchr (q, '%')) != NULL) |
| 691 | { |
| 692 | ++q; |
| 693 | ++extra; |
| 694 | } |
| 695 | |
| 696 | /* If there isn't room, trim off the end of the string. */ |
| 697 | q = bufp; |
| 698 | bufp += extra; |
| 699 | if (extra > avail) |
| 700 | { |
| 701 | trim = extra - avail; |
| 702 | bufp -= trim; |
| 703 | do |
| 704 | { |
| 705 | if (*--q == '%') |
| 706 | --extra; |
| 707 | } |
| 708 | while (--trim != 0); |
| 709 | *q = '\0'; |
| 710 | avail = extra; |
| 711 | } |
| 712 | avail -= extra; |
| 713 | |
| 714 | /* Now double all '%' chars, shuffling the string as we go. */ |
| 715 | while (extra != 0) |
| 716 | { |
| 717 | while ((q[extra] = *q) != '%') |
| 718 | --q; |
| 719 | q[--extra] = '%'; |
| 720 | --q; |
| 721 | } |
| 722 | } |
| 723 | } |
| 724 | p = p + 2; |
| 725 | } |
| 726 | |
| 727 | vfprintf (stderr, new_fmt, ap); |
| 728 | va_end (ap); |
| 729 | |
| 730 | putc ('\n', stderr); |
| 731 | fflush (stderr); |
| 732 | } |
| 733 | |
| 734 | /* This is a function pointer to the routine which should handle BFD |
| 735 | error messages. It is called when a BFD routine encounters an |
| 736 | error for which it wants to print a message. Going through a |
| 737 | function pointer permits a program linked against BFD to intercept |
| 738 | the messages and deal with them itself. */ |
| 739 | |
| 740 | bfd_error_handler_type _bfd_error_handler = _bfd_default_error_handler; |
| 741 | |
| 742 | /* |
| 743 | FUNCTION |
| 744 | bfd_set_error_handler |
| 745 | |
| 746 | SYNOPSIS |
| 747 | bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type); |
| 748 | |
| 749 | DESCRIPTION |
| 750 | Set the BFD error handler function. Returns the previous |
| 751 | function. |
| 752 | */ |
| 753 | |
| 754 | bfd_error_handler_type |
| 755 | bfd_set_error_handler (bfd_error_handler_type pnew) |
| 756 | { |
| 757 | bfd_error_handler_type pold; |
| 758 | |
| 759 | pold = _bfd_error_handler; |
| 760 | _bfd_error_handler = pnew; |
| 761 | return pold; |
| 762 | } |
| 763 | |
| 764 | /* |
| 765 | FUNCTION |
| 766 | bfd_set_error_program_name |
| 767 | |
| 768 | SYNOPSIS |
| 769 | void bfd_set_error_program_name (const char *); |
| 770 | |
| 771 | DESCRIPTION |
| 772 | Set the program name to use when printing a BFD error. This |
| 773 | is printed before the error message followed by a colon and |
| 774 | space. The string must not be changed after it is passed to |
| 775 | this function. |
| 776 | */ |
| 777 | |
| 778 | void |
| 779 | bfd_set_error_program_name (const char *name) |
| 780 | { |
| 781 | _bfd_error_program_name = name; |
| 782 | } |
| 783 | |
| 784 | /* |
| 785 | FUNCTION |
| 786 | bfd_get_error_handler |
| 787 | |
| 788 | SYNOPSIS |
| 789 | bfd_error_handler_type bfd_get_error_handler (void); |
| 790 | |
| 791 | DESCRIPTION |
| 792 | Return the BFD error handler function. |
| 793 | */ |
| 794 | |
| 795 | bfd_error_handler_type |
| 796 | bfd_get_error_handler (void) |
| 797 | { |
| 798 | return _bfd_error_handler; |
| 799 | } |
| 800 | |
| 801 | /* |
| 802 | SUBSECTION |
| 803 | BFD assert handler |
| 804 | |
| 805 | If BFD finds an internal inconsistency, the bfd assert |
| 806 | handler is called with information on the BFD version, BFD |
| 807 | source file and line. If this happens, most programs linked |
| 808 | against BFD are expected to want to exit with an error, or mark |
| 809 | the current BFD operation as failed, so it is recommended to |
| 810 | override the default handler, which just calls |
| 811 | _bfd_error_handler and continues. |
| 812 | |
| 813 | CODE_FRAGMENT |
| 814 | . |
| 815 | .typedef void (*bfd_assert_handler_type) (const char *bfd_formatmsg, |
| 816 | . const char *bfd_version, |
| 817 | . const char *bfd_file, |
| 818 | . int bfd_line); |
| 819 | . |
| 820 | */ |
| 821 | |
| 822 | /* Note the use of bfd_ prefix on the parameter names above: we want to |
| 823 | show which one is the message and which is the version by naming the |
| 824 | parameters, but avoid polluting the program-using-bfd namespace as |
| 825 | the typedef is visible in the exported headers that the program |
| 826 | includes. Below, it's just for consistency. */ |
| 827 | |
| 828 | static void |
| 829 | _bfd_default_assert_handler (const char *bfd_formatmsg, |
| 830 | const char *bfd_version, |
| 831 | const char *bfd_file, |
| 832 | int bfd_line) |
| 833 | |
| 834 | { |
| 835 | (*_bfd_error_handler) (bfd_formatmsg, bfd_version, bfd_file, bfd_line); |
| 836 | } |
| 837 | |
| 838 | /* Similar to _bfd_error_handler, a program can decide to exit on an |
| 839 | internal BFD error. We use a non-variadic type to simplify passing |
| 840 | on parameters to other functions, e.g. _bfd_error_handler. */ |
| 841 | |
| 842 | bfd_assert_handler_type _bfd_assert_handler = _bfd_default_assert_handler; |
| 843 | |
| 844 | /* |
| 845 | FUNCTION |
| 846 | bfd_set_assert_handler |
| 847 | |
| 848 | SYNOPSIS |
| 849 | bfd_assert_handler_type bfd_set_assert_handler (bfd_assert_handler_type); |
| 850 | |
| 851 | DESCRIPTION |
| 852 | Set the BFD assert handler function. Returns the previous |
| 853 | function. |
| 854 | */ |
| 855 | |
| 856 | bfd_assert_handler_type |
| 857 | bfd_set_assert_handler (bfd_assert_handler_type pnew) |
| 858 | { |
| 859 | bfd_assert_handler_type pold; |
| 860 | |
| 861 | pold = _bfd_assert_handler; |
| 862 | _bfd_assert_handler = pnew; |
| 863 | return pold; |
| 864 | } |
| 865 | |
| 866 | /* |
| 867 | FUNCTION |
| 868 | bfd_get_assert_handler |
| 869 | |
| 870 | SYNOPSIS |
| 871 | bfd_assert_handler_type bfd_get_assert_handler (void); |
| 872 | |
| 873 | DESCRIPTION |
| 874 | Return the BFD assert handler function. |
| 875 | */ |
| 876 | |
| 877 | bfd_assert_handler_type |
| 878 | bfd_get_assert_handler (void) |
| 879 | { |
| 880 | return _bfd_assert_handler; |
| 881 | } |
| 882 | \f |
| 883 | /* |
| 884 | SECTION |
| 885 | Miscellaneous |
| 886 | |
| 887 | SUBSECTION |
| 888 | Miscellaneous functions |
| 889 | */ |
| 890 | |
| 891 | /* |
| 892 | FUNCTION |
| 893 | bfd_get_reloc_upper_bound |
| 894 | |
| 895 | SYNOPSIS |
| 896 | long bfd_get_reloc_upper_bound (bfd *abfd, asection *sect); |
| 897 | |
| 898 | DESCRIPTION |
| 899 | Return the number of bytes required to store the |
| 900 | relocation information associated with section @var{sect} |
| 901 | attached to bfd @var{abfd}. If an error occurs, return -1. |
| 902 | |
| 903 | */ |
| 904 | |
| 905 | long |
| 906 | bfd_get_reloc_upper_bound (bfd *abfd, sec_ptr asect) |
| 907 | { |
| 908 | if (abfd->format != bfd_object) |
| 909 | { |
| 910 | bfd_set_error (bfd_error_invalid_operation); |
| 911 | return -1; |
| 912 | } |
| 913 | |
| 914 | return BFD_SEND (abfd, _get_reloc_upper_bound, (abfd, asect)); |
| 915 | } |
| 916 | |
| 917 | /* |
| 918 | FUNCTION |
| 919 | bfd_canonicalize_reloc |
| 920 | |
| 921 | SYNOPSIS |
| 922 | long bfd_canonicalize_reloc |
| 923 | (bfd *abfd, asection *sec, arelent **loc, asymbol **syms); |
| 924 | |
| 925 | DESCRIPTION |
| 926 | Call the back end associated with the open BFD |
| 927 | @var{abfd} and translate the external form of the relocation |
| 928 | information attached to @var{sec} into the internal canonical |
| 929 | form. Place the table into memory at @var{loc}, which has |
| 930 | been preallocated, usually by a call to |
| 931 | <<bfd_get_reloc_upper_bound>>. Returns the number of relocs, or |
| 932 | -1 on error. |
| 933 | |
| 934 | The @var{syms} table is also needed for horrible internal magic |
| 935 | reasons. |
| 936 | |
| 937 | */ |
| 938 | long |
| 939 | bfd_canonicalize_reloc (bfd *abfd, |
| 940 | sec_ptr asect, |
| 941 | arelent **location, |
| 942 | asymbol **symbols) |
| 943 | { |
| 944 | if (abfd->format != bfd_object) |
| 945 | { |
| 946 | bfd_set_error (bfd_error_invalid_operation); |
| 947 | return -1; |
| 948 | } |
| 949 | |
| 950 | return BFD_SEND (abfd, _bfd_canonicalize_reloc, |
| 951 | (abfd, asect, location, symbols)); |
| 952 | } |
| 953 | |
| 954 | /* |
| 955 | FUNCTION |
| 956 | bfd_set_reloc |
| 957 | |
| 958 | SYNOPSIS |
| 959 | void bfd_set_reloc |
| 960 | (bfd *abfd, asection *sec, arelent **rel, unsigned int count); |
| 961 | |
| 962 | DESCRIPTION |
| 963 | Set the relocation pointer and count within |
| 964 | section @var{sec} to the values @var{rel} and @var{count}. |
| 965 | The argument @var{abfd} is ignored. |
| 966 | |
| 967 | */ |
| 968 | |
| 969 | void |
| 970 | bfd_set_reloc (bfd *ignore_abfd ATTRIBUTE_UNUSED, |
| 971 | sec_ptr asect, |
| 972 | arelent **location, |
| 973 | unsigned int count) |
| 974 | { |
| 975 | asect->orelocation = location; |
| 976 | asect->reloc_count = count; |
| 977 | } |
| 978 | |
| 979 | /* |
| 980 | FUNCTION |
| 981 | bfd_set_file_flags |
| 982 | |
| 983 | SYNOPSIS |
| 984 | bfd_boolean bfd_set_file_flags (bfd *abfd, flagword flags); |
| 985 | |
| 986 | DESCRIPTION |
| 987 | Set the flag word in the BFD @var{abfd} to the value @var{flags}. |
| 988 | |
| 989 | Possible errors are: |
| 990 | o <<bfd_error_wrong_format>> - The target bfd was not of object format. |
| 991 | o <<bfd_error_invalid_operation>> - The target bfd was open for reading. |
| 992 | o <<bfd_error_invalid_operation>> - |
| 993 | The flag word contained a bit which was not applicable to the |
| 994 | type of file. E.g., an attempt was made to set the <<D_PAGED>> bit |
| 995 | on a BFD format which does not support demand paging. |
| 996 | |
| 997 | */ |
| 998 | |
| 999 | bfd_boolean |
| 1000 | bfd_set_file_flags (bfd *abfd, flagword flags) |
| 1001 | { |
| 1002 | if (abfd->format != bfd_object) |
| 1003 | { |
| 1004 | bfd_set_error (bfd_error_wrong_format); |
| 1005 | return FALSE; |
| 1006 | } |
| 1007 | |
| 1008 | if (bfd_read_p (abfd)) |
| 1009 | { |
| 1010 | bfd_set_error (bfd_error_invalid_operation); |
| 1011 | return FALSE; |
| 1012 | } |
| 1013 | |
| 1014 | bfd_get_file_flags (abfd) = flags; |
| 1015 | if ((flags & bfd_applicable_file_flags (abfd)) != flags) |
| 1016 | { |
| 1017 | bfd_set_error (bfd_error_invalid_operation); |
| 1018 | return FALSE; |
| 1019 | } |
| 1020 | |
| 1021 | return TRUE; |
| 1022 | } |
| 1023 | |
| 1024 | void |
| 1025 | bfd_assert (const char *file, int line) |
| 1026 | { |
| 1027 | (*_bfd_assert_handler) (_("BFD %s assertion fail %s:%d"), |
| 1028 | BFD_VERSION_STRING, file, line); |
| 1029 | } |
| 1030 | |
| 1031 | /* A more or less friendly abort message. In libbfd.h abort is |
| 1032 | defined to call this function. */ |
| 1033 | |
| 1034 | void |
| 1035 | _bfd_abort (const char *file, int line, const char *fn) |
| 1036 | { |
| 1037 | if (fn != NULL) |
| 1038 | (*_bfd_error_handler) |
| 1039 | (_("BFD %s internal error, aborting at %s line %d in %s\n"), |
| 1040 | BFD_VERSION_STRING, file, line, fn); |
| 1041 | else |
| 1042 | (*_bfd_error_handler) |
| 1043 | (_("BFD %s internal error, aborting at %s line %d\n"), |
| 1044 | BFD_VERSION_STRING, file, line); |
| 1045 | (*_bfd_error_handler) (_("Please report this bug.\n")); |
| 1046 | _exit (EXIT_FAILURE); |
| 1047 | } |
| 1048 | |
| 1049 | /* |
| 1050 | FUNCTION |
| 1051 | bfd_get_arch_size |
| 1052 | |
| 1053 | SYNOPSIS |
| 1054 | int bfd_get_arch_size (bfd *abfd); |
| 1055 | |
| 1056 | DESCRIPTION |
| 1057 | Returns the architecture address size, in bits, as determined |
| 1058 | by the object file's format. For ELF, this information is |
| 1059 | included in the header. |
| 1060 | |
| 1061 | RETURNS |
| 1062 | Returns the arch size in bits if known, <<-1>> otherwise. |
| 1063 | */ |
| 1064 | |
| 1065 | int |
| 1066 | bfd_get_arch_size (bfd *abfd) |
| 1067 | { |
| 1068 | if (abfd->xvec->flavour == bfd_target_elf_flavour) |
| 1069 | return get_elf_backend_data (abfd)->s->arch_size; |
| 1070 | |
| 1071 | return -1; |
| 1072 | } |
| 1073 | |
| 1074 | /* |
| 1075 | FUNCTION |
| 1076 | bfd_get_sign_extend_vma |
| 1077 | |
| 1078 | SYNOPSIS |
| 1079 | int bfd_get_sign_extend_vma (bfd *abfd); |
| 1080 | |
| 1081 | DESCRIPTION |
| 1082 | Indicates if the target architecture "naturally" sign extends |
| 1083 | an address. Some architectures implicitly sign extend address |
| 1084 | values when they are converted to types larger than the size |
| 1085 | of an address. For instance, bfd_get_start_address() will |
| 1086 | return an address sign extended to fill a bfd_vma when this is |
| 1087 | the case. |
| 1088 | |
| 1089 | RETURNS |
| 1090 | Returns <<1>> if the target architecture is known to sign |
| 1091 | extend addresses, <<0>> if the target architecture is known to |
| 1092 | not sign extend addresses, and <<-1>> otherwise. |
| 1093 | */ |
| 1094 | |
| 1095 | int |
| 1096 | bfd_get_sign_extend_vma (bfd *abfd) |
| 1097 | { |
| 1098 | char *name; |
| 1099 | |
| 1100 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) |
| 1101 | return get_elf_backend_data (abfd)->sign_extend_vma; |
| 1102 | |
| 1103 | name = bfd_get_target (abfd); |
| 1104 | |
| 1105 | /* Return a proper value for DJGPP & PE COFF. |
| 1106 | This function is required for DWARF2 support, but there is |
| 1107 | no place to store this information in the COFF back end. |
| 1108 | Should enough other COFF targets add support for DWARF2, |
| 1109 | a place will have to be found. Until then, this hack will do. */ |
| 1110 | if (CONST_STRNEQ (name, "coff-go32") |
| 1111 | || strcmp (name, "pe-i386") == 0 |
| 1112 | || strcmp (name, "pei-i386") == 0 |
| 1113 | || strcmp (name, "pe-x86-64") == 0 |
| 1114 | || strcmp (name, "pei-x86-64") == 0 |
| 1115 | || strcmp (name, "pe-arm-wince-little") == 0 |
| 1116 | || strcmp (name, "pei-arm-wince-little") == 0 |
| 1117 | || strcmp (name, "aixcoff-rs6000") == 0) |
| 1118 | return 1; |
| 1119 | |
| 1120 | if (CONST_STRNEQ (name, "mach-o")) |
| 1121 | return 0; |
| 1122 | |
| 1123 | bfd_set_error (bfd_error_wrong_format); |
| 1124 | return -1; |
| 1125 | } |
| 1126 | |
| 1127 | /* |
| 1128 | FUNCTION |
| 1129 | bfd_set_start_address |
| 1130 | |
| 1131 | SYNOPSIS |
| 1132 | bfd_boolean bfd_set_start_address (bfd *abfd, bfd_vma vma); |
| 1133 | |
| 1134 | DESCRIPTION |
| 1135 | Make @var{vma} the entry point of output BFD @var{abfd}. |
| 1136 | |
| 1137 | RETURNS |
| 1138 | Returns <<TRUE>> on success, <<FALSE>> otherwise. |
| 1139 | */ |
| 1140 | |
| 1141 | bfd_boolean |
| 1142 | bfd_set_start_address (bfd *abfd, bfd_vma vma) |
| 1143 | { |
| 1144 | abfd->start_address = vma; |
| 1145 | return TRUE; |
| 1146 | } |
| 1147 | |
| 1148 | /* |
| 1149 | FUNCTION |
| 1150 | bfd_get_gp_size |
| 1151 | |
| 1152 | SYNOPSIS |
| 1153 | unsigned int bfd_get_gp_size (bfd *abfd); |
| 1154 | |
| 1155 | DESCRIPTION |
| 1156 | Return the maximum size of objects to be optimized using the GP |
| 1157 | register under MIPS ECOFF. This is typically set by the <<-G>> |
| 1158 | argument to the compiler, assembler or linker. |
| 1159 | */ |
| 1160 | |
| 1161 | unsigned int |
| 1162 | bfd_get_gp_size (bfd *abfd) |
| 1163 | { |
| 1164 | if (abfd->format == bfd_object) |
| 1165 | { |
| 1166 | if (abfd->xvec->flavour == bfd_target_ecoff_flavour) |
| 1167 | return ecoff_data (abfd)->gp_size; |
| 1168 | else if (abfd->xvec->flavour == bfd_target_elf_flavour) |
| 1169 | return elf_gp_size (abfd); |
| 1170 | } |
| 1171 | return 0; |
| 1172 | } |
| 1173 | |
| 1174 | /* |
| 1175 | FUNCTION |
| 1176 | bfd_set_gp_size |
| 1177 | |
| 1178 | SYNOPSIS |
| 1179 | void bfd_set_gp_size (bfd *abfd, unsigned int i); |
| 1180 | |
| 1181 | DESCRIPTION |
| 1182 | Set the maximum size of objects to be optimized using the GP |
| 1183 | register under ECOFF or MIPS ELF. This is typically set by |
| 1184 | the <<-G>> argument to the compiler, assembler or linker. |
| 1185 | */ |
| 1186 | |
| 1187 | void |
| 1188 | bfd_set_gp_size (bfd *abfd, unsigned int i) |
| 1189 | { |
| 1190 | /* Don't try to set GP size on an archive or core file! */ |
| 1191 | if (abfd->format != bfd_object) |
| 1192 | return; |
| 1193 | |
| 1194 | if (abfd->xvec->flavour == bfd_target_ecoff_flavour) |
| 1195 | ecoff_data (abfd)->gp_size = i; |
| 1196 | else if (abfd->xvec->flavour == bfd_target_elf_flavour) |
| 1197 | elf_gp_size (abfd) = i; |
| 1198 | } |
| 1199 | |
| 1200 | /* Get the GP value. This is an internal function used by some of the |
| 1201 | relocation special_function routines on targets which support a GP |
| 1202 | register. */ |
| 1203 | |
| 1204 | bfd_vma |
| 1205 | _bfd_get_gp_value (bfd *abfd) |
| 1206 | { |
| 1207 | if (! abfd) |
| 1208 | return 0; |
| 1209 | if (abfd->format != bfd_object) |
| 1210 | return 0; |
| 1211 | |
| 1212 | if (abfd->xvec->flavour == bfd_target_ecoff_flavour) |
| 1213 | return ecoff_data (abfd)->gp; |
| 1214 | else if (abfd->xvec->flavour == bfd_target_elf_flavour) |
| 1215 | return elf_gp (abfd); |
| 1216 | |
| 1217 | return 0; |
| 1218 | } |
| 1219 | |
| 1220 | /* Set the GP value. */ |
| 1221 | |
| 1222 | void |
| 1223 | _bfd_set_gp_value (bfd *abfd, bfd_vma v) |
| 1224 | { |
| 1225 | if (! abfd) |
| 1226 | abort (); |
| 1227 | if (abfd->format != bfd_object) |
| 1228 | return; |
| 1229 | |
| 1230 | if (abfd->xvec->flavour == bfd_target_ecoff_flavour) |
| 1231 | ecoff_data (abfd)->gp = v; |
| 1232 | else if (abfd->xvec->flavour == bfd_target_elf_flavour) |
| 1233 | elf_gp (abfd) = v; |
| 1234 | } |
| 1235 | |
| 1236 | /* |
| 1237 | FUNCTION |
| 1238 | bfd_scan_vma |
| 1239 | |
| 1240 | SYNOPSIS |
| 1241 | bfd_vma bfd_scan_vma (const char *string, const char **end, int base); |
| 1242 | |
| 1243 | DESCRIPTION |
| 1244 | Convert, like <<strtoul>>, a numerical expression |
| 1245 | @var{string} into a <<bfd_vma>> integer, and return that integer. |
| 1246 | (Though without as many bells and whistles as <<strtoul>>.) |
| 1247 | The expression is assumed to be unsigned (i.e., positive). |
| 1248 | If given a @var{base}, it is used as the base for conversion. |
| 1249 | A base of 0 causes the function to interpret the string |
| 1250 | in hex if a leading "0x" or "0X" is found, otherwise |
| 1251 | in octal if a leading zero is found, otherwise in decimal. |
| 1252 | |
| 1253 | If the value would overflow, the maximum <<bfd_vma>> value is |
| 1254 | returned. |
| 1255 | */ |
| 1256 | |
| 1257 | bfd_vma |
| 1258 | bfd_scan_vma (const char *string, const char **end, int base) |
| 1259 | { |
| 1260 | bfd_vma value; |
| 1261 | bfd_vma cutoff; |
| 1262 | unsigned int cutlim; |
| 1263 | int overflow; |
| 1264 | |
| 1265 | /* Let the host do it if possible. */ |
| 1266 | if (sizeof (bfd_vma) <= sizeof (unsigned long)) |
| 1267 | return strtoul (string, (char **) end, base); |
| 1268 | |
| 1269 | #ifdef HAVE_STRTOULL |
| 1270 | if (sizeof (bfd_vma) <= sizeof (unsigned long long)) |
| 1271 | return strtoull (string, (char **) end, base); |
| 1272 | #endif |
| 1273 | |
| 1274 | if (base == 0) |
| 1275 | { |
| 1276 | if (string[0] == '0') |
| 1277 | { |
| 1278 | if ((string[1] == 'x') || (string[1] == 'X')) |
| 1279 | base = 16; |
| 1280 | else |
| 1281 | base = 8; |
| 1282 | } |
| 1283 | } |
| 1284 | |
| 1285 | if ((base < 2) || (base > 36)) |
| 1286 | base = 10; |
| 1287 | |
| 1288 | if (base == 16 |
| 1289 | && string[0] == '0' |
| 1290 | && (string[1] == 'x' || string[1] == 'X') |
| 1291 | && ISXDIGIT (string[2])) |
| 1292 | { |
| 1293 | string += 2; |
| 1294 | } |
| 1295 | |
| 1296 | cutoff = (~ (bfd_vma) 0) / (bfd_vma) base; |
| 1297 | cutlim = (~ (bfd_vma) 0) % (bfd_vma) base; |
| 1298 | value = 0; |
| 1299 | overflow = 0; |
| 1300 | while (1) |
| 1301 | { |
| 1302 | unsigned int digit; |
| 1303 | |
| 1304 | digit = *string; |
| 1305 | if (ISDIGIT (digit)) |
| 1306 | digit = digit - '0'; |
| 1307 | else if (ISALPHA (digit)) |
| 1308 | digit = TOUPPER (digit) - 'A' + 10; |
| 1309 | else |
| 1310 | break; |
| 1311 | if (digit >= (unsigned int) base) |
| 1312 | break; |
| 1313 | if (value > cutoff || (value == cutoff && digit > cutlim)) |
| 1314 | overflow = 1; |
| 1315 | value = value * base + digit; |
| 1316 | ++string; |
| 1317 | } |
| 1318 | |
| 1319 | if (overflow) |
| 1320 | value = ~ (bfd_vma) 0; |
| 1321 | |
| 1322 | if (end != NULL) |
| 1323 | *end = string; |
| 1324 | |
| 1325 | return value; |
| 1326 | } |
| 1327 | |
| 1328 | /* |
| 1329 | FUNCTION |
| 1330 | bfd_copy_private_header_data |
| 1331 | |
| 1332 | SYNOPSIS |
| 1333 | bfd_boolean bfd_copy_private_header_data (bfd *ibfd, bfd *obfd); |
| 1334 | |
| 1335 | DESCRIPTION |
| 1336 | Copy private BFD header information from the BFD @var{ibfd} to the |
| 1337 | the BFD @var{obfd}. This copies information that may require |
| 1338 | sections to exist, but does not require symbol tables. Return |
| 1339 | <<true>> on success, <<false>> on error. |
| 1340 | Possible error returns are: |
| 1341 | |
| 1342 | o <<bfd_error_no_memory>> - |
| 1343 | Not enough memory exists to create private data for @var{obfd}. |
| 1344 | |
| 1345 | .#define bfd_copy_private_header_data(ibfd, obfd) \ |
| 1346 | . BFD_SEND (obfd, _bfd_copy_private_header_data, \ |
| 1347 | . (ibfd, obfd)) |
| 1348 | |
| 1349 | */ |
| 1350 | |
| 1351 | /* |
| 1352 | FUNCTION |
| 1353 | bfd_copy_private_bfd_data |
| 1354 | |
| 1355 | SYNOPSIS |
| 1356 | bfd_boolean bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd); |
| 1357 | |
| 1358 | DESCRIPTION |
| 1359 | Copy private BFD information from the BFD @var{ibfd} to the |
| 1360 | the BFD @var{obfd}. Return <<TRUE>> on success, <<FALSE>> on error. |
| 1361 | Possible error returns are: |
| 1362 | |
| 1363 | o <<bfd_error_no_memory>> - |
| 1364 | Not enough memory exists to create private data for @var{obfd}. |
| 1365 | |
| 1366 | .#define bfd_copy_private_bfd_data(ibfd, obfd) \ |
| 1367 | . BFD_SEND (obfd, _bfd_copy_private_bfd_data, \ |
| 1368 | . (ibfd, obfd)) |
| 1369 | |
| 1370 | */ |
| 1371 | |
| 1372 | /* |
| 1373 | FUNCTION |
| 1374 | bfd_merge_private_bfd_data |
| 1375 | |
| 1376 | SYNOPSIS |
| 1377 | bfd_boolean bfd_merge_private_bfd_data (bfd *ibfd, bfd *obfd); |
| 1378 | |
| 1379 | DESCRIPTION |
| 1380 | Merge private BFD information from the BFD @var{ibfd} to the |
| 1381 | the output file BFD @var{obfd} when linking. Return <<TRUE>> |
| 1382 | on success, <<FALSE>> on error. Possible error returns are: |
| 1383 | |
| 1384 | o <<bfd_error_no_memory>> - |
| 1385 | Not enough memory exists to create private data for @var{obfd}. |
| 1386 | |
| 1387 | .#define bfd_merge_private_bfd_data(ibfd, obfd) \ |
| 1388 | . BFD_SEND (obfd, _bfd_merge_private_bfd_data, \ |
| 1389 | . (ibfd, obfd)) |
| 1390 | |
| 1391 | */ |
| 1392 | |
| 1393 | /* |
| 1394 | FUNCTION |
| 1395 | bfd_set_private_flags |
| 1396 | |
| 1397 | SYNOPSIS |
| 1398 | bfd_boolean bfd_set_private_flags (bfd *abfd, flagword flags); |
| 1399 | |
| 1400 | DESCRIPTION |
| 1401 | Set private BFD flag information in the BFD @var{abfd}. |
| 1402 | Return <<TRUE>> on success, <<FALSE>> on error. Possible error |
| 1403 | returns are: |
| 1404 | |
| 1405 | o <<bfd_error_no_memory>> - |
| 1406 | Not enough memory exists to create private data for @var{obfd}. |
| 1407 | |
| 1408 | .#define bfd_set_private_flags(abfd, flags) \ |
| 1409 | . BFD_SEND (abfd, _bfd_set_private_flags, (abfd, flags)) |
| 1410 | |
| 1411 | */ |
| 1412 | |
| 1413 | /* |
| 1414 | FUNCTION |
| 1415 | Other functions |
| 1416 | |
| 1417 | DESCRIPTION |
| 1418 | The following functions exist but have not yet been documented. |
| 1419 | |
| 1420 | .#define bfd_sizeof_headers(abfd, info) \ |
| 1421 | . BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, info)) |
| 1422 | . |
| 1423 | .#define bfd_find_nearest_line(abfd, sec, syms, off, file, func, line) \ |
| 1424 | . BFD_SEND (abfd, _bfd_find_nearest_line, \ |
| 1425 | . (abfd, sec, syms, off, file, func, line)) |
| 1426 | . |
| 1427 | .#define bfd_find_nearest_line_discriminator(abfd, sec, syms, off, file, func, \ |
| 1428 | . line, disc) \ |
| 1429 | . BFD_SEND (abfd, _bfd_find_nearest_line_discriminator, \ |
| 1430 | . (abfd, sec, syms, off, file, func, line, disc)) |
| 1431 | . |
| 1432 | .#define bfd_find_line(abfd, syms, sym, file, line) \ |
| 1433 | . BFD_SEND (abfd, _bfd_find_line, \ |
| 1434 | . (abfd, syms, sym, file, line)) |
| 1435 | . |
| 1436 | .#define bfd_find_inliner_info(abfd, file, func, line) \ |
| 1437 | . BFD_SEND (abfd, _bfd_find_inliner_info, \ |
| 1438 | . (abfd, file, func, line)) |
| 1439 | . |
| 1440 | .#define bfd_debug_info_start(abfd) \ |
| 1441 | . BFD_SEND (abfd, _bfd_debug_info_start, (abfd)) |
| 1442 | . |
| 1443 | .#define bfd_debug_info_end(abfd) \ |
| 1444 | . BFD_SEND (abfd, _bfd_debug_info_end, (abfd)) |
| 1445 | . |
| 1446 | .#define bfd_debug_info_accumulate(abfd, section) \ |
| 1447 | . BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section)) |
| 1448 | . |
| 1449 | .#define bfd_stat_arch_elt(abfd, stat) \ |
| 1450 | . BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat)) |
| 1451 | . |
| 1452 | .#define bfd_update_armap_timestamp(abfd) \ |
| 1453 | . BFD_SEND (abfd, _bfd_update_armap_timestamp, (abfd)) |
| 1454 | . |
| 1455 | .#define bfd_set_arch_mach(abfd, arch, mach)\ |
| 1456 | . BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach)) |
| 1457 | . |
| 1458 | .#define bfd_relax_section(abfd, section, link_info, again) \ |
| 1459 | . BFD_SEND (abfd, _bfd_relax_section, (abfd, section, link_info, again)) |
| 1460 | . |
| 1461 | .#define bfd_gc_sections(abfd, link_info) \ |
| 1462 | . BFD_SEND (abfd, _bfd_gc_sections, (abfd, link_info)) |
| 1463 | . |
| 1464 | .#define bfd_lookup_section_flags(link_info, flag_info, section) \ |
| 1465 | . BFD_SEND (abfd, _bfd_lookup_section_flags, (link_info, flag_info, section)) |
| 1466 | . |
| 1467 | .#define bfd_merge_sections(abfd, link_info) \ |
| 1468 | . BFD_SEND (abfd, _bfd_merge_sections, (abfd, link_info)) |
| 1469 | . |
| 1470 | .#define bfd_is_group_section(abfd, sec) \ |
| 1471 | . BFD_SEND (abfd, _bfd_is_group_section, (abfd, sec)) |
| 1472 | . |
| 1473 | .#define bfd_discard_group(abfd, sec) \ |
| 1474 | . BFD_SEND (abfd, _bfd_discard_group, (abfd, sec)) |
| 1475 | . |
| 1476 | .#define bfd_link_hash_table_create(abfd) \ |
| 1477 | . BFD_SEND (abfd, _bfd_link_hash_table_create, (abfd)) |
| 1478 | . |
| 1479 | .#define bfd_link_hash_table_free(abfd, hash) \ |
| 1480 | . BFD_SEND (abfd, _bfd_link_hash_table_free, (hash)) |
| 1481 | . |
| 1482 | .#define bfd_link_add_symbols(abfd, info) \ |
| 1483 | . BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info)) |
| 1484 | . |
| 1485 | .#define bfd_link_just_syms(abfd, sec, info) \ |
| 1486 | . BFD_SEND (abfd, _bfd_link_just_syms, (sec, info)) |
| 1487 | . |
| 1488 | .#define bfd_final_link(abfd, info) \ |
| 1489 | . BFD_SEND (abfd, _bfd_final_link, (abfd, info)) |
| 1490 | . |
| 1491 | .#define bfd_free_cached_info(abfd) \ |
| 1492 | . BFD_SEND (abfd, _bfd_free_cached_info, (abfd)) |
| 1493 | . |
| 1494 | .#define bfd_get_dynamic_symtab_upper_bound(abfd) \ |
| 1495 | . BFD_SEND (abfd, _bfd_get_dynamic_symtab_upper_bound, (abfd)) |
| 1496 | . |
| 1497 | .#define bfd_print_private_bfd_data(abfd, file)\ |
| 1498 | . BFD_SEND (abfd, _bfd_print_private_bfd_data, (abfd, file)) |
| 1499 | . |
| 1500 | .#define bfd_canonicalize_dynamic_symtab(abfd, asymbols) \ |
| 1501 | . BFD_SEND (abfd, _bfd_canonicalize_dynamic_symtab, (abfd, asymbols)) |
| 1502 | . |
| 1503 | .#define bfd_get_synthetic_symtab(abfd, count, syms, dyncount, dynsyms, ret) \ |
| 1504 | . BFD_SEND (abfd, _bfd_get_synthetic_symtab, (abfd, count, syms, \ |
| 1505 | . dyncount, dynsyms, ret)) |
| 1506 | . |
| 1507 | .#define bfd_get_dynamic_reloc_upper_bound(abfd) \ |
| 1508 | . BFD_SEND (abfd, _bfd_get_dynamic_reloc_upper_bound, (abfd)) |
| 1509 | . |
| 1510 | .#define bfd_canonicalize_dynamic_reloc(abfd, arels, asyms) \ |
| 1511 | . BFD_SEND (abfd, _bfd_canonicalize_dynamic_reloc, (abfd, arels, asyms)) |
| 1512 | . |
| 1513 | .extern bfd_byte *bfd_get_relocated_section_contents |
| 1514 | . (bfd *, struct bfd_link_info *, struct bfd_link_order *, bfd_byte *, |
| 1515 | . bfd_boolean, asymbol **); |
| 1516 | . |
| 1517 | |
| 1518 | */ |
| 1519 | |
| 1520 | bfd_byte * |
| 1521 | bfd_get_relocated_section_contents (bfd *abfd, |
| 1522 | struct bfd_link_info *link_info, |
| 1523 | struct bfd_link_order *link_order, |
| 1524 | bfd_byte *data, |
| 1525 | bfd_boolean relocatable, |
| 1526 | asymbol **symbols) |
| 1527 | { |
| 1528 | bfd *abfd2; |
| 1529 | bfd_byte *(*fn) (bfd *, struct bfd_link_info *, struct bfd_link_order *, |
| 1530 | bfd_byte *, bfd_boolean, asymbol **); |
| 1531 | |
| 1532 | if (link_order->type == bfd_indirect_link_order) |
| 1533 | { |
| 1534 | abfd2 = link_order->u.indirect.section->owner; |
| 1535 | if (abfd2 == NULL) |
| 1536 | abfd2 = abfd; |
| 1537 | } |
| 1538 | else |
| 1539 | abfd2 = abfd; |
| 1540 | |
| 1541 | fn = abfd2->xvec->_bfd_get_relocated_section_contents; |
| 1542 | |
| 1543 | return (*fn) (abfd, link_info, link_order, data, relocatable, symbols); |
| 1544 | } |
| 1545 | |
| 1546 | /* Record information about an ELF program header. */ |
| 1547 | |
| 1548 | bfd_boolean |
| 1549 | bfd_record_phdr (bfd *abfd, |
| 1550 | unsigned long type, |
| 1551 | bfd_boolean flags_valid, |
| 1552 | flagword flags, |
| 1553 | bfd_boolean at_valid, |
| 1554 | bfd_vma at, |
| 1555 | bfd_boolean includes_filehdr, |
| 1556 | bfd_boolean includes_phdrs, |
| 1557 | unsigned int count, |
| 1558 | asection **secs) |
| 1559 | { |
| 1560 | struct elf_segment_map *m, **pm; |
| 1561 | bfd_size_type amt; |
| 1562 | |
| 1563 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour) |
| 1564 | return TRUE; |
| 1565 | |
| 1566 | amt = sizeof (struct elf_segment_map); |
| 1567 | amt += ((bfd_size_type) count - 1) * sizeof (asection *); |
| 1568 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
| 1569 | if (m == NULL) |
| 1570 | return FALSE; |
| 1571 | |
| 1572 | m->p_type = type; |
| 1573 | m->p_flags = flags; |
| 1574 | m->p_paddr = at; |
| 1575 | m->p_flags_valid = flags_valid; |
| 1576 | m->p_paddr_valid = at_valid; |
| 1577 | m->includes_filehdr = includes_filehdr; |
| 1578 | m->includes_phdrs = includes_phdrs; |
| 1579 | m->count = count; |
| 1580 | if (count > 0) |
| 1581 | memcpy (m->sections, secs, count * sizeof (asection *)); |
| 1582 | |
| 1583 | for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next) |
| 1584 | ; |
| 1585 | *pm = m; |
| 1586 | |
| 1587 | return TRUE; |
| 1588 | } |
| 1589 | |
| 1590 | #ifdef BFD64 |
| 1591 | /* Return true iff this target is 32-bit. */ |
| 1592 | |
| 1593 | static bfd_boolean |
| 1594 | is32bit (bfd *abfd) |
| 1595 | { |
| 1596 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) |
| 1597 | { |
| 1598 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
| 1599 | return bed->s->elfclass == ELFCLASS32; |
| 1600 | } |
| 1601 | |
| 1602 | /* For non-ELF targets, use architecture information. */ |
| 1603 | return bfd_arch_bits_per_address (abfd) <= 32; |
| 1604 | } |
| 1605 | #endif |
| 1606 | |
| 1607 | /* bfd_sprintf_vma and bfd_fprintf_vma display an address in the |
| 1608 | target's address size. */ |
| 1609 | |
| 1610 | void |
| 1611 | bfd_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, bfd_vma value) |
| 1612 | { |
| 1613 | #ifdef BFD64 |
| 1614 | if (is32bit (abfd)) |
| 1615 | { |
| 1616 | sprintf (buf, "%08lx", (unsigned long) value & 0xffffffff); |
| 1617 | return; |
| 1618 | } |
| 1619 | #endif |
| 1620 | sprintf_vma (buf, value); |
| 1621 | } |
| 1622 | |
| 1623 | void |
| 1624 | bfd_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value) |
| 1625 | { |
| 1626 | #ifdef BFD64 |
| 1627 | if (is32bit (abfd)) |
| 1628 | { |
| 1629 | fprintf ((FILE *) stream, "%08lx", (unsigned long) value & 0xffffffff); |
| 1630 | return; |
| 1631 | } |
| 1632 | #endif |
| 1633 | fprintf_vma ((FILE *) stream, value); |
| 1634 | } |
| 1635 | |
| 1636 | /* |
| 1637 | FUNCTION |
| 1638 | bfd_alt_mach_code |
| 1639 | |
| 1640 | SYNOPSIS |
| 1641 | bfd_boolean bfd_alt_mach_code (bfd *abfd, int alternative); |
| 1642 | |
| 1643 | DESCRIPTION |
| 1644 | |
| 1645 | When more than one machine code number is available for the |
| 1646 | same machine type, this function can be used to switch between |
| 1647 | the preferred one (alternative == 0) and any others. Currently, |
| 1648 | only ELF supports this feature, with up to two alternate |
| 1649 | machine codes. |
| 1650 | */ |
| 1651 | |
| 1652 | bfd_boolean |
| 1653 | bfd_alt_mach_code (bfd *abfd, int alternative) |
| 1654 | { |
| 1655 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) |
| 1656 | { |
| 1657 | int code; |
| 1658 | |
| 1659 | switch (alternative) |
| 1660 | { |
| 1661 | case 0: |
| 1662 | code = get_elf_backend_data (abfd)->elf_machine_code; |
| 1663 | break; |
| 1664 | |
| 1665 | case 1: |
| 1666 | code = get_elf_backend_data (abfd)->elf_machine_alt1; |
| 1667 | if (code == 0) |
| 1668 | return FALSE; |
| 1669 | break; |
| 1670 | |
| 1671 | case 2: |
| 1672 | code = get_elf_backend_data (abfd)->elf_machine_alt2; |
| 1673 | if (code == 0) |
| 1674 | return FALSE; |
| 1675 | break; |
| 1676 | |
| 1677 | default: |
| 1678 | return FALSE; |
| 1679 | } |
| 1680 | |
| 1681 | elf_elfheader (abfd)->e_machine = code; |
| 1682 | |
| 1683 | return TRUE; |
| 1684 | } |
| 1685 | |
| 1686 | return FALSE; |
| 1687 | } |
| 1688 | |
| 1689 | /* |
| 1690 | CODE_FRAGMENT |
| 1691 | |
| 1692 | .struct bfd_preserve |
| 1693 | .{ |
| 1694 | . void *marker; |
| 1695 | . void *tdata; |
| 1696 | . flagword flags; |
| 1697 | . const struct bfd_arch_info *arch_info; |
| 1698 | . struct bfd_section *sections; |
| 1699 | . struct bfd_section *section_last; |
| 1700 | . unsigned int section_count; |
| 1701 | . struct bfd_hash_table section_htab; |
| 1702 | .}; |
| 1703 | . |
| 1704 | */ |
| 1705 | |
| 1706 | /* |
| 1707 | FUNCTION |
| 1708 | bfd_preserve_save |
| 1709 | |
| 1710 | SYNOPSIS |
| 1711 | bfd_boolean bfd_preserve_save (bfd *, struct bfd_preserve *); |
| 1712 | |
| 1713 | DESCRIPTION |
| 1714 | When testing an object for compatibility with a particular |
| 1715 | target back-end, the back-end object_p function needs to set |
| 1716 | up certain fields in the bfd on successfully recognizing the |
| 1717 | object. This typically happens in a piecemeal fashion, with |
| 1718 | failures possible at many points. On failure, the bfd is |
| 1719 | supposed to be restored to its initial state, which is |
| 1720 | virtually impossible. However, restoring a subset of the bfd |
| 1721 | state works in practice. This function stores the subset and |
| 1722 | reinitializes the bfd. |
| 1723 | |
| 1724 | */ |
| 1725 | |
| 1726 | bfd_boolean |
| 1727 | bfd_preserve_save (bfd *abfd, struct bfd_preserve *preserve) |
| 1728 | { |
| 1729 | preserve->tdata = abfd->tdata.any; |
| 1730 | preserve->arch_info = abfd->arch_info; |
| 1731 | preserve->flags = abfd->flags; |
| 1732 | preserve->sections = abfd->sections; |
| 1733 | preserve->section_last = abfd->section_last; |
| 1734 | preserve->section_count = abfd->section_count; |
| 1735 | preserve->section_htab = abfd->section_htab; |
| 1736 | |
| 1737 | if (! bfd_hash_table_init (&abfd->section_htab, bfd_section_hash_newfunc, |
| 1738 | sizeof (struct section_hash_entry))) |
| 1739 | return FALSE; |
| 1740 | |
| 1741 | abfd->tdata.any = NULL; |
| 1742 | abfd->arch_info = &bfd_default_arch_struct; |
| 1743 | abfd->flags &= BFD_FLAGS_SAVED; |
| 1744 | abfd->sections = NULL; |
| 1745 | abfd->section_last = NULL; |
| 1746 | abfd->section_count = 0; |
| 1747 | |
| 1748 | return TRUE; |
| 1749 | } |
| 1750 | |
| 1751 | /* |
| 1752 | FUNCTION |
| 1753 | bfd_preserve_restore |
| 1754 | |
| 1755 | SYNOPSIS |
| 1756 | void bfd_preserve_restore (bfd *, struct bfd_preserve *); |
| 1757 | |
| 1758 | DESCRIPTION |
| 1759 | This function restores bfd state saved by bfd_preserve_save. |
| 1760 | If MARKER is non-NULL in struct bfd_preserve then that block |
| 1761 | and all subsequently bfd_alloc'd memory is freed. |
| 1762 | |
| 1763 | */ |
| 1764 | |
| 1765 | void |
| 1766 | bfd_preserve_restore (bfd *abfd, struct bfd_preserve *preserve) |
| 1767 | { |
| 1768 | bfd_hash_table_free (&abfd->section_htab); |
| 1769 | |
| 1770 | abfd->tdata.any = preserve->tdata; |
| 1771 | abfd->arch_info = preserve->arch_info; |
| 1772 | abfd->flags = preserve->flags; |
| 1773 | abfd->section_htab = preserve->section_htab; |
| 1774 | abfd->sections = preserve->sections; |
| 1775 | abfd->section_last = preserve->section_last; |
| 1776 | abfd->section_count = preserve->section_count; |
| 1777 | |
| 1778 | /* bfd_release frees all memory more recently bfd_alloc'd than |
| 1779 | its arg, as well as its arg. */ |
| 1780 | if (preserve->marker != NULL) |
| 1781 | { |
| 1782 | bfd_release (abfd, preserve->marker); |
| 1783 | preserve->marker = NULL; |
| 1784 | } |
| 1785 | } |
| 1786 | |
| 1787 | /* |
| 1788 | FUNCTION |
| 1789 | bfd_preserve_finish |
| 1790 | |
| 1791 | SYNOPSIS |
| 1792 | void bfd_preserve_finish (bfd *, struct bfd_preserve *); |
| 1793 | |
| 1794 | DESCRIPTION |
| 1795 | This function should be called when the bfd state saved by |
| 1796 | bfd_preserve_save is no longer needed. ie. when the back-end |
| 1797 | object_p function returns with success. |
| 1798 | |
| 1799 | */ |
| 1800 | |
| 1801 | void |
| 1802 | bfd_preserve_finish (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_preserve *preserve) |
| 1803 | { |
| 1804 | /* It would be nice to be able to free more memory here, eg. old |
| 1805 | tdata, but that's not possible since these blocks are sitting |
| 1806 | inside bfd_alloc'd memory. The section hash is on a separate |
| 1807 | objalloc. */ |
| 1808 | bfd_hash_table_free (&preserve->section_htab); |
| 1809 | } |
| 1810 | |
| 1811 | /* |
| 1812 | FUNCTION |
| 1813 | bfd_emul_get_maxpagesize |
| 1814 | |
| 1815 | SYNOPSIS |
| 1816 | bfd_vma bfd_emul_get_maxpagesize (const char *); |
| 1817 | |
| 1818 | DESCRIPTION |
| 1819 | Returns the maximum page size, in bytes, as determined by |
| 1820 | emulation. |
| 1821 | |
| 1822 | RETURNS |
| 1823 | Returns the maximum page size in bytes for ELF, 0 otherwise. |
| 1824 | */ |
| 1825 | |
| 1826 | bfd_vma |
| 1827 | bfd_emul_get_maxpagesize (const char *emul) |
| 1828 | { |
| 1829 | const bfd_target *target; |
| 1830 | |
| 1831 | target = bfd_find_target (emul, NULL); |
| 1832 | if (target != NULL |
| 1833 | && target->flavour == bfd_target_elf_flavour) |
| 1834 | return xvec_get_elf_backend_data (target)->maxpagesize; |
| 1835 | |
| 1836 | return 0; |
| 1837 | } |
| 1838 | |
| 1839 | static void |
| 1840 | bfd_elf_set_pagesize (const bfd_target *target, bfd_vma size, |
| 1841 | int offset, const bfd_target *orig_target) |
| 1842 | { |
| 1843 | if (target->flavour == bfd_target_elf_flavour) |
| 1844 | { |
| 1845 | const struct elf_backend_data *bed; |
| 1846 | |
| 1847 | bed = xvec_get_elf_backend_data (target); |
| 1848 | *((bfd_vma *) ((char *) bed + offset)) = size; |
| 1849 | } |
| 1850 | |
| 1851 | if (target->alternative_target |
| 1852 | && target->alternative_target != orig_target) |
| 1853 | bfd_elf_set_pagesize (target->alternative_target, size, offset, |
| 1854 | orig_target); |
| 1855 | } |
| 1856 | |
| 1857 | /* |
| 1858 | FUNCTION |
| 1859 | bfd_emul_set_maxpagesize |
| 1860 | |
| 1861 | SYNOPSIS |
| 1862 | void bfd_emul_set_maxpagesize (const char *, bfd_vma); |
| 1863 | |
| 1864 | DESCRIPTION |
| 1865 | For ELF, set the maximum page size for the emulation. It is |
| 1866 | a no-op for other formats. |
| 1867 | |
| 1868 | */ |
| 1869 | |
| 1870 | void |
| 1871 | bfd_emul_set_maxpagesize (const char *emul, bfd_vma size) |
| 1872 | { |
| 1873 | const bfd_target *target; |
| 1874 | |
| 1875 | target = bfd_find_target (emul, NULL); |
| 1876 | if (target) |
| 1877 | bfd_elf_set_pagesize (target, size, |
| 1878 | offsetof (struct elf_backend_data, |
| 1879 | maxpagesize), target); |
| 1880 | } |
| 1881 | |
| 1882 | /* |
| 1883 | FUNCTION |
| 1884 | bfd_emul_get_commonpagesize |
| 1885 | |
| 1886 | SYNOPSIS |
| 1887 | bfd_vma bfd_emul_get_commonpagesize (const char *); |
| 1888 | |
| 1889 | DESCRIPTION |
| 1890 | Returns the common page size, in bytes, as determined by |
| 1891 | emulation. |
| 1892 | |
| 1893 | RETURNS |
| 1894 | Returns the common page size in bytes for ELF, 0 otherwise. |
| 1895 | */ |
| 1896 | |
| 1897 | bfd_vma |
| 1898 | bfd_emul_get_commonpagesize (const char *emul) |
| 1899 | { |
| 1900 | const bfd_target *target; |
| 1901 | |
| 1902 | target = bfd_find_target (emul, NULL); |
| 1903 | if (target != NULL |
| 1904 | && target->flavour == bfd_target_elf_flavour) |
| 1905 | return xvec_get_elf_backend_data (target)->commonpagesize; |
| 1906 | |
| 1907 | return 0; |
| 1908 | } |
| 1909 | |
| 1910 | /* |
| 1911 | FUNCTION |
| 1912 | bfd_emul_set_commonpagesize |
| 1913 | |
| 1914 | SYNOPSIS |
| 1915 | void bfd_emul_set_commonpagesize (const char *, bfd_vma); |
| 1916 | |
| 1917 | DESCRIPTION |
| 1918 | For ELF, set the common page size for the emulation. It is |
| 1919 | a no-op for other formats. |
| 1920 | |
| 1921 | */ |
| 1922 | |
| 1923 | void |
| 1924 | bfd_emul_set_commonpagesize (const char *emul, bfd_vma size) |
| 1925 | { |
| 1926 | const bfd_target *target; |
| 1927 | |
| 1928 | target = bfd_find_target (emul, NULL); |
| 1929 | if (target) |
| 1930 | bfd_elf_set_pagesize (target, size, |
| 1931 | offsetof (struct elf_backend_data, |
| 1932 | commonpagesize), target); |
| 1933 | } |
| 1934 | |
| 1935 | /* |
| 1936 | FUNCTION |
| 1937 | bfd_demangle |
| 1938 | |
| 1939 | SYNOPSIS |
| 1940 | char *bfd_demangle (bfd *, const char *, int); |
| 1941 | |
| 1942 | DESCRIPTION |
| 1943 | Wrapper around cplus_demangle. Strips leading underscores and |
| 1944 | other such chars that would otherwise confuse the demangler. |
| 1945 | If passed a g++ v3 ABI mangled name, returns a buffer allocated |
| 1946 | with malloc holding the demangled name. Returns NULL otherwise |
| 1947 | and on memory alloc failure. |
| 1948 | */ |
| 1949 | |
| 1950 | char * |
| 1951 | bfd_demangle (bfd *abfd, const char *name, int options) |
| 1952 | { |
| 1953 | char *res, *alloc; |
| 1954 | const char *pre, *suf; |
| 1955 | size_t pre_len; |
| 1956 | bfd_boolean skip_lead; |
| 1957 | |
| 1958 | skip_lead = (abfd != NULL |
| 1959 | && *name != '\0' |
| 1960 | && bfd_get_symbol_leading_char (abfd) == *name); |
| 1961 | if (skip_lead) |
| 1962 | ++name; |
| 1963 | |
| 1964 | /* This is a hack for better error reporting on XCOFF, PowerPC64-ELF |
| 1965 | or the MS PE format. These formats have a number of leading '.'s |
| 1966 | on at least some symbols, so we remove all dots to avoid |
| 1967 | confusing the demangler. */ |
| 1968 | pre = name; |
| 1969 | while (*name == '.' || *name == '$') |
| 1970 | ++name; |
| 1971 | pre_len = name - pre; |
| 1972 | |
| 1973 | /* Strip off @plt and suchlike too. */ |
| 1974 | alloc = NULL; |
| 1975 | suf = strchr (name, '@'); |
| 1976 | if (suf != NULL) |
| 1977 | { |
| 1978 | alloc = (char *) bfd_malloc (suf - name + 1); |
| 1979 | if (alloc == NULL) |
| 1980 | return NULL; |
| 1981 | memcpy (alloc, name, suf - name); |
| 1982 | alloc[suf - name] = '\0'; |
| 1983 | name = alloc; |
| 1984 | } |
| 1985 | |
| 1986 | res = cplus_demangle (name, options); |
| 1987 | |
| 1988 | if (alloc != NULL) |
| 1989 | free (alloc); |
| 1990 | |
| 1991 | if (res == NULL) |
| 1992 | { |
| 1993 | if (skip_lead) |
| 1994 | { |
| 1995 | size_t len = strlen (pre) + 1; |
| 1996 | alloc = (char *) bfd_malloc (len); |
| 1997 | if (alloc == NULL) |
| 1998 | return NULL; |
| 1999 | memcpy (alloc, pre, len); |
| 2000 | return alloc; |
| 2001 | } |
| 2002 | return NULL; |
| 2003 | } |
| 2004 | |
| 2005 | /* Put back any prefix or suffix. */ |
| 2006 | if (pre_len != 0 || suf != NULL) |
| 2007 | { |
| 2008 | size_t len; |
| 2009 | size_t suf_len; |
| 2010 | char *final; |
| 2011 | |
| 2012 | len = strlen (res); |
| 2013 | if (suf == NULL) |
| 2014 | suf = res + len; |
| 2015 | suf_len = strlen (suf) + 1; |
| 2016 | final = (char *) bfd_malloc (pre_len + len + suf_len); |
| 2017 | if (final != NULL) |
| 2018 | { |
| 2019 | memcpy (final, pre, pre_len); |
| 2020 | memcpy (final + pre_len, res, len); |
| 2021 | memcpy (final + pre_len + len, suf, suf_len); |
| 2022 | } |
| 2023 | free (res); |
| 2024 | res = final; |
| 2025 | } |
| 2026 | |
| 2027 | return res; |
| 2028 | } |