| 1 | /* Generic BFD library interface and support routines. |
| 2 | Copyright (C) 1990-2019 Free Software Foundation, Inc. |
| 3 | Written by Cygnus Support. |
| 4 | |
| 5 | This file is part of BFD, the Binary File Descriptor library. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 20 | MA 02110-1301, USA. */ |
| 21 | |
| 22 | /* |
| 23 | INODE |
| 24 | typedef bfd, Error reporting, BFD front end, BFD front end |
| 25 | |
| 26 | SECTION |
| 27 | <<typedef bfd>> |
| 28 | |
| 29 | A BFD has type <<bfd>>; objects of this type are the |
| 30 | cornerstone of any application using BFD. Using BFD |
| 31 | consists of making references though the BFD and to data in the BFD. |
| 32 | |
| 33 | Here is the structure that defines the type <<bfd>>. It |
| 34 | contains the major data about the file and pointers |
| 35 | to the rest of the data. |
| 36 | |
| 37 | CODE_FRAGMENT |
| 38 | . |
| 39 | .enum bfd_direction |
| 40 | . { |
| 41 | . no_direction = 0, |
| 42 | . read_direction = 1, |
| 43 | . write_direction = 2, |
| 44 | . both_direction = 3 |
| 45 | . }; |
| 46 | . |
| 47 | .enum bfd_plugin_format |
| 48 | . { |
| 49 | . bfd_plugin_unknown = 0, |
| 50 | . bfd_plugin_yes = 1, |
| 51 | . bfd_plugin_no = 2 |
| 52 | . }; |
| 53 | . |
| 54 | .struct bfd_build_id |
| 55 | . { |
| 56 | . bfd_size_type size; |
| 57 | . bfd_byte data[1]; |
| 58 | . }; |
| 59 | . |
| 60 | .struct bfd |
| 61 | .{ |
| 62 | . {* The filename the application opened the BFD with. *} |
| 63 | . const char *filename; |
| 64 | . |
| 65 | . {* A pointer to the target jump table. *} |
| 66 | . const struct bfd_target *xvec; |
| 67 | . |
| 68 | . {* The IOSTREAM, and corresponding IO vector that provide access |
| 69 | . to the file backing the BFD. *} |
| 70 | . void *iostream; |
| 71 | . const struct bfd_iovec *iovec; |
| 72 | . |
| 73 | . {* The caching routines use these to maintain a |
| 74 | . least-recently-used list of BFDs. *} |
| 75 | . struct bfd *lru_prev, *lru_next; |
| 76 | . |
| 77 | . {* Track current file position (or current buffer offset for |
| 78 | . in-memory BFDs). When a file is closed by the caching routines, |
| 79 | . BFD retains state information on the file here. *} |
| 80 | . ufile_ptr where; |
| 81 | . |
| 82 | . {* File modified time, if mtime_set is TRUE. *} |
| 83 | . long mtime; |
| 84 | . |
| 85 | . {* A unique identifier of the BFD *} |
| 86 | . unsigned int id; |
| 87 | . |
| 88 | . {* The format which belongs to the BFD. (object, core, etc.) *} |
| 89 | . ENUM_BITFIELD (bfd_format) format : 3; |
| 90 | . |
| 91 | . {* The direction with which the BFD was opened. *} |
| 92 | . ENUM_BITFIELD (bfd_direction) direction : 2; |
| 93 | . |
| 94 | . {* Format_specific flags. *} |
| 95 | . flagword flags : 20; |
| 96 | . |
| 97 | . {* Values that may appear in the flags field of a BFD. These also |
| 98 | . appear in the object_flags field of the bfd_target structure, where |
| 99 | . they indicate the set of flags used by that backend (not all flags |
| 100 | . are meaningful for all object file formats) (FIXME: at the moment, |
| 101 | . the object_flags values have mostly just been copied from backend |
| 102 | . to another, and are not necessarily correct). *} |
| 103 | . |
| 104 | .#define BFD_NO_FLAGS 0x0 |
| 105 | . |
| 106 | . {* BFD contains relocation entries. *} |
| 107 | .#define HAS_RELOC 0x1 |
| 108 | . |
| 109 | . {* BFD is directly executable. *} |
| 110 | .#define EXEC_P 0x2 |
| 111 | . |
| 112 | . {* BFD has line number information (basically used for F_LNNO in a |
| 113 | . COFF header). *} |
| 114 | .#define HAS_LINENO 0x4 |
| 115 | . |
| 116 | . {* BFD has debugging information. *} |
| 117 | .#define HAS_DEBUG 0x08 |
| 118 | . |
| 119 | . {* BFD has symbols. *} |
| 120 | .#define HAS_SYMS 0x10 |
| 121 | . |
| 122 | . {* BFD has local symbols (basically used for F_LSYMS in a COFF |
| 123 | . header). *} |
| 124 | .#define HAS_LOCALS 0x20 |
| 125 | . |
| 126 | . {* BFD is a dynamic object. *} |
| 127 | .#define DYNAMIC 0x40 |
| 128 | . |
| 129 | . {* Text section is write protected (if D_PAGED is not set, this is |
| 130 | . like an a.out NMAGIC file) (the linker sets this by default, but |
| 131 | . clears it for -r or -N). *} |
| 132 | .#define WP_TEXT 0x80 |
| 133 | . |
| 134 | . {* BFD is dynamically paged (this is like an a.out ZMAGIC file) (the |
| 135 | . linker sets this by default, but clears it for -r or -n or -N). *} |
| 136 | .#define D_PAGED 0x100 |
| 137 | . |
| 138 | . {* BFD is relaxable (this means that bfd_relax_section may be able to |
| 139 | . do something) (sometimes bfd_relax_section can do something even if |
| 140 | . this is not set). *} |
| 141 | .#define BFD_IS_RELAXABLE 0x200 |
| 142 | . |
| 143 | . {* This may be set before writing out a BFD to request using a |
| 144 | . traditional format. For example, this is used to request that when |
| 145 | . writing out an a.out object the symbols not be hashed to eliminate |
| 146 | . duplicates. *} |
| 147 | .#define BFD_TRADITIONAL_FORMAT 0x400 |
| 148 | . |
| 149 | . {* This flag indicates that the BFD contents are actually cached |
| 150 | . in memory. If this is set, iostream points to a bfd_in_memory |
| 151 | . struct. *} |
| 152 | .#define BFD_IN_MEMORY 0x800 |
| 153 | . |
| 154 | . {* This BFD has been created by the linker and doesn't correspond |
| 155 | . to any input file. *} |
| 156 | .#define BFD_LINKER_CREATED 0x1000 |
| 157 | . |
| 158 | . {* This may be set before writing out a BFD to request that it |
| 159 | . be written using values for UIDs, GIDs, timestamps, etc. that |
| 160 | . will be consistent from run to run. *} |
| 161 | .#define BFD_DETERMINISTIC_OUTPUT 0x2000 |
| 162 | . |
| 163 | . {* Compress sections in this BFD. *} |
| 164 | .#define BFD_COMPRESS 0x4000 |
| 165 | . |
| 166 | . {* Decompress sections in this BFD. *} |
| 167 | .#define BFD_DECOMPRESS 0x8000 |
| 168 | . |
| 169 | . {* BFD is a dummy, for plugins. *} |
| 170 | .#define BFD_PLUGIN 0x10000 |
| 171 | . |
| 172 | . {* Compress sections in this BFD with SHF_COMPRESSED from gABI. *} |
| 173 | .#define BFD_COMPRESS_GABI 0x20000 |
| 174 | . |
| 175 | . {* Convert ELF common symbol type to STT_COMMON or STT_OBJECT in this |
| 176 | . BFD. *} |
| 177 | .#define BFD_CONVERT_ELF_COMMON 0x40000 |
| 178 | . |
| 179 | . {* Use the ELF STT_COMMON type in this BFD. *} |
| 180 | .#define BFD_USE_ELF_STT_COMMON 0x80000 |
| 181 | . |
| 182 | . {* Flags bits to be saved in bfd_preserve_save. *} |
| 183 | .#define BFD_FLAGS_SAVED \ |
| 184 | . (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS | BFD_LINKER_CREATED \ |
| 185 | . | BFD_PLUGIN | BFD_COMPRESS_GABI | BFD_CONVERT_ELF_COMMON \ |
| 186 | . | BFD_USE_ELF_STT_COMMON) |
| 187 | . |
| 188 | . {* Flags bits which are for BFD use only. *} |
| 189 | .#define BFD_FLAGS_FOR_BFD_USE_MASK \ |
| 190 | . (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS | BFD_LINKER_CREATED \ |
| 191 | . | BFD_PLUGIN | BFD_TRADITIONAL_FORMAT | BFD_DETERMINISTIC_OUTPUT \ |
| 192 | . | BFD_COMPRESS_GABI | BFD_CONVERT_ELF_COMMON | BFD_USE_ELF_STT_COMMON) |
| 193 | . |
| 194 | . {* Is the file descriptor being cached? That is, can it be closed as |
| 195 | . needed, and re-opened when accessed later? *} |
| 196 | . unsigned int cacheable : 1; |
| 197 | . |
| 198 | . {* Marks whether there was a default target specified when the |
| 199 | . BFD was opened. This is used to select which matching algorithm |
| 200 | . to use to choose the back end. *} |
| 201 | . unsigned int target_defaulted : 1; |
| 202 | . |
| 203 | . {* ... and here: (``once'' means at least once). *} |
| 204 | . unsigned int opened_once : 1; |
| 205 | . |
| 206 | . {* Set if we have a locally maintained mtime value, rather than |
| 207 | . getting it from the file each time. *} |
| 208 | . unsigned int mtime_set : 1; |
| 209 | . |
| 210 | . {* Flag set if symbols from this BFD should not be exported. *} |
| 211 | . unsigned int no_export : 1; |
| 212 | . |
| 213 | . {* Remember when output has begun, to stop strange things |
| 214 | . from happening. *} |
| 215 | . unsigned int output_has_begun : 1; |
| 216 | . |
| 217 | . {* Have archive map. *} |
| 218 | . unsigned int has_armap : 1; |
| 219 | . |
| 220 | . {* Set if this is a thin archive. *} |
| 221 | . unsigned int is_thin_archive : 1; |
| 222 | . |
| 223 | . {* Set if only required symbols should be added in the link hash table for |
| 224 | . this object. Used by VMS linkers. *} |
| 225 | . unsigned int selective_search : 1; |
| 226 | . |
| 227 | . {* Set if this is the linker output BFD. *} |
| 228 | . unsigned int is_linker_output : 1; |
| 229 | . |
| 230 | . {* Set if this is the linker input BFD. *} |
| 231 | . unsigned int is_linker_input : 1; |
| 232 | . |
| 233 | . {* If this is an input for a compiler plug-in library. *} |
| 234 | . ENUM_BITFIELD (bfd_plugin_format) plugin_format : 2; |
| 235 | . |
| 236 | . {* Set if this is a plugin output file. *} |
| 237 | . unsigned int lto_output : 1; |
| 238 | . |
| 239 | . {* Set to dummy BFD created when claimed by a compiler plug-in |
| 240 | . library. *} |
| 241 | . bfd *plugin_dummy_bfd; |
| 242 | . |
| 243 | . {* Currently my_archive is tested before adding origin to |
| 244 | . anything. I believe that this can become always an add of |
| 245 | . origin, with origin set to 0 for non archive files. *} |
| 246 | . ufile_ptr origin; |
| 247 | . |
| 248 | . {* The origin in the archive of the proxy entry. This will |
| 249 | . normally be the same as origin, except for thin archives, |
| 250 | . when it will contain the current offset of the proxy in the |
| 251 | . thin archive rather than the offset of the bfd in its actual |
| 252 | . container. *} |
| 253 | . ufile_ptr proxy_origin; |
| 254 | . |
| 255 | . {* A hash table for section names. *} |
| 256 | . struct bfd_hash_table section_htab; |
| 257 | . |
| 258 | . {* Pointer to linked list of sections. *} |
| 259 | . struct bfd_section *sections; |
| 260 | . |
| 261 | . {* The last section on the section list. *} |
| 262 | . struct bfd_section *section_last; |
| 263 | . |
| 264 | . {* The number of sections. *} |
| 265 | . unsigned int section_count; |
| 266 | . |
| 267 | . {* A field used by _bfd_generic_link_add_archive_symbols. This will |
| 268 | . be used only for archive elements. *} |
| 269 | . int archive_pass; |
| 270 | . |
| 271 | . {* Stuff only useful for object files: |
| 272 | . The start address. *} |
| 273 | . bfd_vma start_address; |
| 274 | . |
| 275 | . {* Symbol table for output BFD (with symcount entries). |
| 276 | . Also used by the linker to cache input BFD symbols. *} |
| 277 | . struct bfd_symbol **outsymbols; |
| 278 | . |
| 279 | . {* Used for input and output. *} |
| 280 | . unsigned int symcount; |
| 281 | . |
| 282 | . {* Used for slurped dynamic symbol tables. *} |
| 283 | . unsigned int dynsymcount; |
| 284 | . |
| 285 | . {* Pointer to structure which contains architecture information. *} |
| 286 | . const struct bfd_arch_info *arch_info; |
| 287 | . |
| 288 | . {* Stuff only useful for archives. *} |
| 289 | . void *arelt_data; |
| 290 | . struct bfd *my_archive; {* The containing archive BFD. *} |
| 291 | . struct bfd *archive_next; {* The next BFD in the archive. *} |
| 292 | . struct bfd *archive_head; {* The first BFD in the archive. *} |
| 293 | . struct bfd *nested_archives; {* List of nested archive in a flattened |
| 294 | . thin archive. *} |
| 295 | . |
| 296 | . union { |
| 297 | . {* For input BFDs, a chain of BFDs involved in a link. *} |
| 298 | . struct bfd *next; |
| 299 | . {* For output BFD, the linker hash table. *} |
| 300 | . struct bfd_link_hash_table *hash; |
| 301 | . } link; |
| 302 | . |
| 303 | . {* Used by the back end to hold private data. *} |
| 304 | . union |
| 305 | . { |
| 306 | . struct aout_data_struct *aout_data; |
| 307 | . struct artdata *aout_ar_data; |
| 308 | . struct coff_tdata *coff_obj_data; |
| 309 | . struct pe_tdata *pe_obj_data; |
| 310 | . struct xcoff_tdata *xcoff_obj_data; |
| 311 | . struct ecoff_tdata *ecoff_obj_data; |
| 312 | . struct srec_data_struct *srec_data; |
| 313 | . struct verilog_data_struct *verilog_data; |
| 314 | . struct ihex_data_struct *ihex_data; |
| 315 | . struct tekhex_data_struct *tekhex_data; |
| 316 | . struct elf_obj_tdata *elf_obj_data; |
| 317 | . struct mmo_data_struct *mmo_data; |
| 318 | . struct sun_core_struct *sun_core_data; |
| 319 | . struct sco5_core_struct *sco5_core_data; |
| 320 | . struct trad_core_struct *trad_core_data; |
| 321 | . struct som_data_struct *som_data; |
| 322 | . struct hpux_core_struct *hpux_core_data; |
| 323 | . struct hppabsd_core_struct *hppabsd_core_data; |
| 324 | . struct sgi_core_struct *sgi_core_data; |
| 325 | . struct lynx_core_struct *lynx_core_data; |
| 326 | . struct osf_core_struct *osf_core_data; |
| 327 | . struct cisco_core_struct *cisco_core_data; |
| 328 | . struct versados_data_struct *versados_data; |
| 329 | . struct netbsd_core_struct *netbsd_core_data; |
| 330 | . struct mach_o_data_struct *mach_o_data; |
| 331 | . struct mach_o_fat_data_struct *mach_o_fat_data; |
| 332 | . struct plugin_data_struct *plugin_data; |
| 333 | . struct bfd_pef_data_struct *pef_data; |
| 334 | . struct bfd_pef_xlib_data_struct *pef_xlib_data; |
| 335 | . struct bfd_sym_data_struct *sym_data; |
| 336 | . void *any; |
| 337 | . } |
| 338 | . tdata; |
| 339 | . |
| 340 | . {* Used by the application to hold private data. *} |
| 341 | . void *usrdata; |
| 342 | . |
| 343 | . {* Where all the allocated stuff under this BFD goes. This is a |
| 344 | . struct objalloc *, but we use void * to avoid requiring the inclusion |
| 345 | . of objalloc.h. *} |
| 346 | . void *memory; |
| 347 | . |
| 348 | . {* For input BFDs, the build ID, if the object has one. *} |
| 349 | . const struct bfd_build_id *build_id; |
| 350 | .}; |
| 351 | . |
| 352 | .{* See note beside bfd_set_section_userdata. *} |
| 353 | .static inline bfd_boolean |
| 354 | .bfd_set_cacheable (bfd * abfd, bfd_boolean val) |
| 355 | .{ |
| 356 | . abfd->cacheable = val; |
| 357 | . return TRUE; |
| 358 | .} |
| 359 | . |
| 360 | */ |
| 361 | |
| 362 | #include "sysdep.h" |
| 363 | #include <stdarg.h> |
| 364 | #include "bfd.h" |
| 365 | #include "bfdver.h" |
| 366 | #include "libiberty.h" |
| 367 | #include "demangle.h" |
| 368 | #include "safe-ctype.h" |
| 369 | #include "bfdlink.h" |
| 370 | #include "libbfd.h" |
| 371 | #include "coff/internal.h" |
| 372 | #include "coff/sym.h" |
| 373 | #include "libcoff.h" |
| 374 | #include "libecoff.h" |
| 375 | #undef obj_symbols |
| 376 | #include "elf-bfd.h" |
| 377 | |
| 378 | #ifndef EXIT_FAILURE |
| 379 | #define EXIT_FAILURE 1 |
| 380 | #endif |
| 381 | |
| 382 | \f |
| 383 | /* provide storage for subsystem, stack and heap data which may have been |
| 384 | passed in on the command line. Ld puts this data into a bfd_link_info |
| 385 | struct which ultimately gets passed in to the bfd. When it arrives, copy |
| 386 | it to the following struct so that the data will be available in coffcode.h |
| 387 | where it is needed. The typedef's used are defined in bfd.h */ |
| 388 | \f |
| 389 | /* |
| 390 | INODE |
| 391 | Error reporting, Miscellaneous, typedef bfd, BFD front end |
| 392 | |
| 393 | SECTION |
| 394 | Error reporting |
| 395 | |
| 396 | Most BFD functions return nonzero on success (check their |
| 397 | individual documentation for precise semantics). On an error, |
| 398 | they call <<bfd_set_error>> to set an error condition that callers |
| 399 | can check by calling <<bfd_get_error>>. |
| 400 | If that returns <<bfd_error_system_call>>, then check |
| 401 | <<errno>>. |
| 402 | |
| 403 | The easiest way to report a BFD error to the user is to |
| 404 | use <<bfd_perror>>. |
| 405 | |
| 406 | SUBSECTION |
| 407 | Type <<bfd_error_type>> |
| 408 | |
| 409 | The values returned by <<bfd_get_error>> are defined by the |
| 410 | enumerated type <<bfd_error_type>>. |
| 411 | |
| 412 | CODE_FRAGMENT |
| 413 | . |
| 414 | .typedef enum bfd_error |
| 415 | .{ |
| 416 | . bfd_error_no_error = 0, |
| 417 | . bfd_error_system_call, |
| 418 | . bfd_error_invalid_target, |
| 419 | . bfd_error_wrong_format, |
| 420 | . bfd_error_wrong_object_format, |
| 421 | . bfd_error_invalid_operation, |
| 422 | . bfd_error_no_memory, |
| 423 | . bfd_error_no_symbols, |
| 424 | . bfd_error_no_armap, |
| 425 | . bfd_error_no_more_archived_files, |
| 426 | . bfd_error_malformed_archive, |
| 427 | . bfd_error_missing_dso, |
| 428 | . bfd_error_file_not_recognized, |
| 429 | . bfd_error_file_ambiguously_recognized, |
| 430 | . bfd_error_no_contents, |
| 431 | . bfd_error_nonrepresentable_section, |
| 432 | . bfd_error_no_debug_section, |
| 433 | . bfd_error_bad_value, |
| 434 | . bfd_error_file_truncated, |
| 435 | . bfd_error_file_too_big, |
| 436 | . bfd_error_on_input, |
| 437 | . bfd_error_invalid_error_code |
| 438 | .} |
| 439 | .bfd_error_type; |
| 440 | . |
| 441 | */ |
| 442 | |
| 443 | static bfd_error_type bfd_error = bfd_error_no_error; |
| 444 | static bfd *input_bfd = NULL; |
| 445 | static bfd_error_type input_error = bfd_error_no_error; |
| 446 | |
| 447 | const char *const bfd_errmsgs[] = |
| 448 | { |
| 449 | N_("no error"), |
| 450 | N_("system call error"), |
| 451 | N_("invalid bfd target"), |
| 452 | N_("file in wrong format"), |
| 453 | N_("archive object file in wrong format"), |
| 454 | N_("invalid operation"), |
| 455 | N_("memory exhausted"), |
| 456 | N_("no symbols"), |
| 457 | N_("archive has no index; run ranlib to add one"), |
| 458 | N_("no more archived files"), |
| 459 | N_("malformed archive"), |
| 460 | N_("DSO missing from command line"), |
| 461 | N_("file format not recognized"), |
| 462 | N_("file format is ambiguous"), |
| 463 | N_("section has no contents"), |
| 464 | N_("nonrepresentable section on output"), |
| 465 | N_("symbol needs debug section which does not exist"), |
| 466 | N_("bad value"), |
| 467 | N_("file truncated"), |
| 468 | N_("file too big"), |
| 469 | N_("error reading %s: %s"), |
| 470 | N_("#<invalid error code>") |
| 471 | }; |
| 472 | |
| 473 | /* |
| 474 | FUNCTION |
| 475 | bfd_get_error |
| 476 | |
| 477 | SYNOPSIS |
| 478 | bfd_error_type bfd_get_error (void); |
| 479 | |
| 480 | DESCRIPTION |
| 481 | Return the current BFD error condition. |
| 482 | */ |
| 483 | |
| 484 | bfd_error_type |
| 485 | bfd_get_error (void) |
| 486 | { |
| 487 | return bfd_error; |
| 488 | } |
| 489 | |
| 490 | /* |
| 491 | FUNCTION |
| 492 | bfd_set_error |
| 493 | |
| 494 | SYNOPSIS |
| 495 | void bfd_set_error (bfd_error_type error_tag); |
| 496 | |
| 497 | DESCRIPTION |
| 498 | Set the BFD error condition to be @var{error_tag}. |
| 499 | |
| 500 | @var{error_tag} must not be bfd_error_on_input. Use |
| 501 | bfd_set_input_error for input errors instead. |
| 502 | */ |
| 503 | |
| 504 | void |
| 505 | bfd_set_error (bfd_error_type error_tag) |
| 506 | { |
| 507 | bfd_error = error_tag; |
| 508 | if (bfd_error >= bfd_error_on_input) |
| 509 | abort (); |
| 510 | } |
| 511 | |
| 512 | /* |
| 513 | FUNCTION |
| 514 | bfd_set_input_error |
| 515 | |
| 516 | SYNOPSIS |
| 517 | void bfd_set_input_error (bfd *input, bfd_error_type error_tag); |
| 518 | |
| 519 | DESCRIPTION |
| 520 | |
| 521 | Set the BFD error condition to be bfd_error_on_input. |
| 522 | @var{input} is the input bfd where the error occurred, and |
| 523 | @var{error_tag} the bfd_error_type error. |
| 524 | */ |
| 525 | |
| 526 | void |
| 527 | bfd_set_input_error (bfd *input, bfd_error_type error_tag) |
| 528 | { |
| 529 | /* This is an error that occurred during bfd_close when writing an |
| 530 | archive, but on one of the input files. */ |
| 531 | bfd_error = bfd_error_on_input; |
| 532 | input_bfd = input; |
| 533 | input_error = error_tag; |
| 534 | if (input_error >= bfd_error_on_input) |
| 535 | abort (); |
| 536 | } |
| 537 | |
| 538 | /* |
| 539 | FUNCTION |
| 540 | bfd_errmsg |
| 541 | |
| 542 | SYNOPSIS |
| 543 | const char *bfd_errmsg (bfd_error_type error_tag); |
| 544 | |
| 545 | DESCRIPTION |
| 546 | Return a string describing the error @var{error_tag}, or |
| 547 | the system error if @var{error_tag} is <<bfd_error_system_call>>. |
| 548 | */ |
| 549 | |
| 550 | const char * |
| 551 | bfd_errmsg (bfd_error_type error_tag) |
| 552 | { |
| 553 | #ifndef errno |
| 554 | extern int errno; |
| 555 | #endif |
| 556 | if (error_tag == bfd_error_on_input) |
| 557 | { |
| 558 | char *buf; |
| 559 | const char *msg = bfd_errmsg (input_error); |
| 560 | |
| 561 | if (asprintf (&buf, _(bfd_errmsgs [error_tag]), input_bfd->filename, msg) |
| 562 | != -1) |
| 563 | return buf; |
| 564 | |
| 565 | /* Ick, what to do on out of memory? */ |
| 566 | return msg; |
| 567 | } |
| 568 | |
| 569 | if (error_tag == bfd_error_system_call) |
| 570 | return xstrerror (errno); |
| 571 | |
| 572 | if (error_tag > bfd_error_invalid_error_code) |
| 573 | error_tag = bfd_error_invalid_error_code; /* sanity check */ |
| 574 | |
| 575 | return _(bfd_errmsgs [error_tag]); |
| 576 | } |
| 577 | |
| 578 | /* |
| 579 | FUNCTION |
| 580 | bfd_perror |
| 581 | |
| 582 | SYNOPSIS |
| 583 | void bfd_perror (const char *message); |
| 584 | |
| 585 | DESCRIPTION |
| 586 | Print to the standard error stream a string describing the |
| 587 | last BFD error that occurred, or the last system error if |
| 588 | the last BFD error was a system call failure. If @var{message} |
| 589 | is non-NULL and non-empty, the error string printed is preceded |
| 590 | by @var{message}, a colon, and a space. It is followed by a newline. |
| 591 | */ |
| 592 | |
| 593 | void |
| 594 | bfd_perror (const char *message) |
| 595 | { |
| 596 | fflush (stdout); |
| 597 | if (message == NULL || *message == '\0') |
| 598 | fprintf (stderr, "%s\n", bfd_errmsg (bfd_get_error ())); |
| 599 | else |
| 600 | fprintf (stderr, "%s: %s\n", message, bfd_errmsg (bfd_get_error ())); |
| 601 | fflush (stderr); |
| 602 | } |
| 603 | |
| 604 | /* |
| 605 | SUBSECTION |
| 606 | BFD error handler |
| 607 | |
| 608 | Some BFD functions want to print messages describing the |
| 609 | problem. They call a BFD error handler function. This |
| 610 | function may be overridden by the program. |
| 611 | |
| 612 | The BFD error handler acts like vprintf. |
| 613 | |
| 614 | CODE_FRAGMENT |
| 615 | . |
| 616 | .typedef void (*bfd_error_handler_type) (const char *, va_list); |
| 617 | . |
| 618 | */ |
| 619 | |
| 620 | /* The program name used when printing BFD error messages. */ |
| 621 | |
| 622 | static const char *_bfd_error_program_name; |
| 623 | |
| 624 | /* Support for positional parameters. */ |
| 625 | |
| 626 | union _bfd_doprnt_args |
| 627 | { |
| 628 | int i; |
| 629 | long l; |
| 630 | long long ll; |
| 631 | double d; |
| 632 | long double ld; |
| 633 | void *p; |
| 634 | enum |
| 635 | { |
| 636 | Bad, |
| 637 | Int, |
| 638 | Long, |
| 639 | LongLong, |
| 640 | Double, |
| 641 | LongDouble, |
| 642 | Ptr |
| 643 | } type; |
| 644 | }; |
| 645 | |
| 646 | /* This macro and _bfd_doprnt taken from libiberty _doprnt.c, tidied a |
| 647 | little and extended to handle '%pA', '%pB' and positional parameters. */ |
| 648 | |
| 649 | #define PRINT_TYPE(TYPE, FIELD) \ |
| 650 | do \ |
| 651 | { \ |
| 652 | TYPE value = (TYPE) args[arg_no].FIELD; \ |
| 653 | result = fprintf (stream, specifier, value); \ |
| 654 | } while (0) |
| 655 | |
| 656 | static int |
| 657 | _bfd_doprnt (FILE *stream, const char *format, union _bfd_doprnt_args *args) |
| 658 | { |
| 659 | const char *ptr = format; |
| 660 | char specifier[128]; |
| 661 | int total_printed = 0; |
| 662 | unsigned int arg_count = 0; |
| 663 | |
| 664 | while (*ptr != '\0') |
| 665 | { |
| 666 | int result; |
| 667 | |
| 668 | if (*ptr != '%') |
| 669 | { |
| 670 | /* While we have regular characters, print them. */ |
| 671 | char *end = strchr (ptr, '%'); |
| 672 | if (end != NULL) |
| 673 | result = fprintf (stream, "%.*s", (int) (end - ptr), ptr); |
| 674 | else |
| 675 | result = fprintf (stream, "%s", ptr); |
| 676 | ptr += result; |
| 677 | } |
| 678 | else if (ptr[1] == '%') |
| 679 | { |
| 680 | fputc ('%', stream); |
| 681 | result = 1; |
| 682 | ptr += 2; |
| 683 | } |
| 684 | else |
| 685 | { |
| 686 | /* We have a format specifier! */ |
| 687 | char *sptr = specifier; |
| 688 | int wide_width = 0, short_width = 0; |
| 689 | unsigned int arg_no; |
| 690 | |
| 691 | /* Copy the % and move forward. */ |
| 692 | *sptr++ = *ptr++; |
| 693 | |
| 694 | /* Check for a positional parameter. */ |
| 695 | arg_no = -1u; |
| 696 | if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$') |
| 697 | { |
| 698 | arg_no = *ptr - '1'; |
| 699 | ptr += 2; |
| 700 | } |
| 701 | |
| 702 | /* Move past flags. */ |
| 703 | while (strchr ("-+ #0'I", *ptr)) |
| 704 | *sptr++ = *ptr++; |
| 705 | |
| 706 | if (*ptr == '*') |
| 707 | { |
| 708 | int value; |
| 709 | unsigned int arg_index; |
| 710 | |
| 711 | ptr++; |
| 712 | arg_index = arg_count; |
| 713 | if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$') |
| 714 | { |
| 715 | arg_index = *ptr - '1'; |
| 716 | ptr += 2; |
| 717 | } |
| 718 | value = abs (args[arg_index].i); |
| 719 | arg_count++; |
| 720 | sptr += sprintf (sptr, "%d", value); |
| 721 | } |
| 722 | else |
| 723 | /* Handle explicit numeric value. */ |
| 724 | while (ISDIGIT (*ptr)) |
| 725 | *sptr++ = *ptr++; |
| 726 | |
| 727 | /* Precision. */ |
| 728 | if (*ptr == '.') |
| 729 | { |
| 730 | /* Copy and go past the period. */ |
| 731 | *sptr++ = *ptr++; |
| 732 | if (*ptr == '*') |
| 733 | { |
| 734 | int value; |
| 735 | unsigned int arg_index; |
| 736 | |
| 737 | ptr++; |
| 738 | arg_index = arg_count; |
| 739 | if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$') |
| 740 | { |
| 741 | arg_index = *ptr - '1'; |
| 742 | ptr += 2; |
| 743 | } |
| 744 | value = abs (args[arg_index].i); |
| 745 | arg_count++; |
| 746 | sptr += sprintf (sptr, "%d", value); |
| 747 | } |
| 748 | else |
| 749 | /* Handle explicit numeric value. */ |
| 750 | while (ISDIGIT (*ptr)) |
| 751 | *sptr++ = *ptr++; |
| 752 | } |
| 753 | while (strchr ("hlL", *ptr)) |
| 754 | { |
| 755 | switch (*ptr) |
| 756 | { |
| 757 | case 'h': |
| 758 | short_width = 1; |
| 759 | break; |
| 760 | case 'l': |
| 761 | wide_width++; |
| 762 | break; |
| 763 | case 'L': |
| 764 | wide_width = 2; |
| 765 | break; |
| 766 | default: |
| 767 | abort(); |
| 768 | } |
| 769 | *sptr++ = *ptr++; |
| 770 | } |
| 771 | |
| 772 | /* Copy the type specifier, and NULL terminate. */ |
| 773 | *sptr++ = *ptr++; |
| 774 | *sptr = '\0'; |
| 775 | if ((int) arg_no < 0) |
| 776 | arg_no = arg_count; |
| 777 | |
| 778 | switch (ptr[-1]) |
| 779 | { |
| 780 | case 'd': |
| 781 | case 'i': |
| 782 | case 'o': |
| 783 | case 'u': |
| 784 | case 'x': |
| 785 | case 'X': |
| 786 | case 'c': |
| 787 | { |
| 788 | /* Short values are promoted to int, so just copy it |
| 789 | as an int and trust the C library printf to cast it |
| 790 | to the right width. */ |
| 791 | if (short_width) |
| 792 | PRINT_TYPE (int, i); |
| 793 | else |
| 794 | { |
| 795 | switch (wide_width) |
| 796 | { |
| 797 | case 0: |
| 798 | PRINT_TYPE (int, i); |
| 799 | break; |
| 800 | case 1: |
| 801 | PRINT_TYPE (long, l); |
| 802 | break; |
| 803 | case 2: |
| 804 | default: |
| 805 | #if defined (__MSVCRT__) |
| 806 | sptr[-3] = 'I'; |
| 807 | sptr[-2] = '6'; |
| 808 | sptr[-1] = '4'; |
| 809 | *sptr++ = ptr[-1]; |
| 810 | *sptr = '\0'; |
| 811 | #endif |
| 812 | #if defined (__GNUC__) || defined (HAVE_LONG_LONG) |
| 813 | PRINT_TYPE (long long, ll); |
| 814 | #else |
| 815 | /* Fake it and hope for the best. */ |
| 816 | PRINT_TYPE (long, l); |
| 817 | #endif |
| 818 | break; |
| 819 | } |
| 820 | } |
| 821 | } |
| 822 | break; |
| 823 | case 'f': |
| 824 | case 'e': |
| 825 | case 'E': |
| 826 | case 'g': |
| 827 | case 'G': |
| 828 | { |
| 829 | if (wide_width == 0) |
| 830 | PRINT_TYPE (double, d); |
| 831 | else |
| 832 | { |
| 833 | #if defined (__GNUC__) || defined (HAVE_LONG_DOUBLE) |
| 834 | PRINT_TYPE (long double, ld); |
| 835 | #else |
| 836 | /* Fake it and hope for the best. */ |
| 837 | PRINT_TYPE (double, d); |
| 838 | #endif |
| 839 | } |
| 840 | } |
| 841 | break; |
| 842 | case 's': |
| 843 | PRINT_TYPE (char *, p); |
| 844 | break; |
| 845 | case 'p': |
| 846 | if (*ptr == 'A') |
| 847 | { |
| 848 | asection *sec; |
| 849 | bfd *abfd; |
| 850 | const char *group = NULL; |
| 851 | struct coff_comdat_info *ci; |
| 852 | |
| 853 | ptr++; |
| 854 | sec = (asection *) args[arg_no].p; |
| 855 | if (sec == NULL) |
| 856 | /* Invoking %pA with a null section pointer is an |
| 857 | internal error. */ |
| 858 | abort (); |
| 859 | abfd = sec->owner; |
| 860 | if (abfd != NULL |
| 861 | && bfd_get_flavour (abfd) == bfd_target_elf_flavour |
| 862 | && elf_next_in_group (sec) != NULL |
| 863 | && (sec->flags & SEC_GROUP) == 0) |
| 864 | group = elf_group_name (sec); |
| 865 | else if (abfd != NULL |
| 866 | && bfd_get_flavour (abfd) == bfd_target_coff_flavour |
| 867 | && (ci = bfd_coff_get_comdat_section (sec->owner, |
| 868 | sec)) != NULL) |
| 869 | group = ci->name; |
| 870 | if (group != NULL) |
| 871 | result = fprintf (stream, "%s[%s]", sec->name, group); |
| 872 | else |
| 873 | result = fprintf (stream, "%s", sec->name); |
| 874 | } |
| 875 | else if (*ptr == 'B') |
| 876 | { |
| 877 | bfd *abfd; |
| 878 | |
| 879 | ptr++; |
| 880 | abfd = (bfd *) args[arg_no].p; |
| 881 | if (abfd == NULL) |
| 882 | /* Invoking %pB with a null bfd pointer is an |
| 883 | internal error. */ |
| 884 | abort (); |
| 885 | else if (abfd->my_archive |
| 886 | && !bfd_is_thin_archive (abfd->my_archive)) |
| 887 | result = fprintf (stream, "%s(%s)", |
| 888 | abfd->my_archive->filename, |
| 889 | abfd->filename); |
| 890 | else |
| 891 | result = fprintf (stream, "%s", abfd->filename); |
| 892 | } |
| 893 | else |
| 894 | PRINT_TYPE (void *, p); |
| 895 | break; |
| 896 | default: |
| 897 | abort(); |
| 898 | } |
| 899 | arg_count++; |
| 900 | } |
| 901 | if (result == -1) |
| 902 | return -1; |
| 903 | total_printed += result; |
| 904 | } |
| 905 | |
| 906 | return total_printed; |
| 907 | } |
| 908 | |
| 909 | /* First pass over FORMAT to gather ARGS. Returns number of args. */ |
| 910 | |
| 911 | static unsigned int |
| 912 | _bfd_doprnt_scan (const char *format, union _bfd_doprnt_args *args) |
| 913 | { |
| 914 | const char *ptr = format; |
| 915 | unsigned int arg_count = 0; |
| 916 | |
| 917 | while (*ptr != '\0') |
| 918 | { |
| 919 | if (*ptr != '%') |
| 920 | { |
| 921 | ptr = strchr (ptr, '%'); |
| 922 | if (ptr == NULL) |
| 923 | break; |
| 924 | } |
| 925 | else if (ptr[1] == '%') |
| 926 | ptr += 2; |
| 927 | else |
| 928 | { |
| 929 | int wide_width = 0, short_width = 0; |
| 930 | unsigned int arg_no; |
| 931 | int arg_type; |
| 932 | |
| 933 | ptr++; |
| 934 | |
| 935 | /* Check for a positional parameter. */ |
| 936 | arg_no = -1u; |
| 937 | if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$') |
| 938 | { |
| 939 | arg_no = *ptr - '1'; |
| 940 | ptr += 2; |
| 941 | } |
| 942 | |
| 943 | /* Move past flags. */ |
| 944 | while (strchr ("-+ #0'I", *ptr)) |
| 945 | ptr++; |
| 946 | |
| 947 | if (*ptr == '*') |
| 948 | { |
| 949 | unsigned int arg_index; |
| 950 | |
| 951 | ptr++; |
| 952 | arg_index = arg_count; |
| 953 | if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$') |
| 954 | { |
| 955 | arg_index = *ptr - '1'; |
| 956 | ptr += 2; |
| 957 | } |
| 958 | if (arg_index >= 9) |
| 959 | abort (); |
| 960 | args[arg_index].type = Int; |
| 961 | arg_count++; |
| 962 | } |
| 963 | else |
| 964 | /* Handle explicit numeric value. */ |
| 965 | while (ISDIGIT (*ptr)) |
| 966 | ptr++; |
| 967 | |
| 968 | /* Precision. */ |
| 969 | if (*ptr == '.') |
| 970 | { |
| 971 | ptr++; |
| 972 | if (*ptr == '*') |
| 973 | { |
| 974 | unsigned int arg_index; |
| 975 | |
| 976 | ptr++; |
| 977 | arg_index = arg_count; |
| 978 | if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$') |
| 979 | { |
| 980 | arg_index = *ptr - '1'; |
| 981 | ptr += 2; |
| 982 | } |
| 983 | if (arg_index >= 9) |
| 984 | abort (); |
| 985 | args[arg_index].type = Int; |
| 986 | arg_count++; |
| 987 | } |
| 988 | else |
| 989 | /* Handle explicit numeric value. */ |
| 990 | while (ISDIGIT (*ptr)) |
| 991 | ptr++; |
| 992 | } |
| 993 | while (strchr ("hlL", *ptr)) |
| 994 | { |
| 995 | switch (*ptr) |
| 996 | { |
| 997 | case 'h': |
| 998 | short_width = 1; |
| 999 | break; |
| 1000 | case 'l': |
| 1001 | wide_width++; |
| 1002 | break; |
| 1003 | case 'L': |
| 1004 | wide_width = 2; |
| 1005 | break; |
| 1006 | default: |
| 1007 | abort(); |
| 1008 | } |
| 1009 | ptr++; |
| 1010 | } |
| 1011 | |
| 1012 | ptr++; |
| 1013 | if ((int) arg_no < 0) |
| 1014 | arg_no = arg_count; |
| 1015 | |
| 1016 | arg_type = Bad; |
| 1017 | switch (ptr[-1]) |
| 1018 | { |
| 1019 | case 'd': |
| 1020 | case 'i': |
| 1021 | case 'o': |
| 1022 | case 'u': |
| 1023 | case 'x': |
| 1024 | case 'X': |
| 1025 | case 'c': |
| 1026 | { |
| 1027 | if (short_width) |
| 1028 | arg_type = Int; |
| 1029 | else |
| 1030 | { |
| 1031 | switch (wide_width) |
| 1032 | { |
| 1033 | case 0: |
| 1034 | arg_type = Int; |
| 1035 | break; |
| 1036 | case 1: |
| 1037 | arg_type = Long; |
| 1038 | break; |
| 1039 | case 2: |
| 1040 | default: |
| 1041 | #if defined (__GNUC__) || defined (HAVE_LONG_LONG) |
| 1042 | arg_type = LongLong; |
| 1043 | #else |
| 1044 | arg_type = Long; |
| 1045 | #endif |
| 1046 | break; |
| 1047 | } |
| 1048 | } |
| 1049 | } |
| 1050 | break; |
| 1051 | case 'f': |
| 1052 | case 'e': |
| 1053 | case 'E': |
| 1054 | case 'g': |
| 1055 | case 'G': |
| 1056 | { |
| 1057 | if (wide_width == 0) |
| 1058 | arg_type = Double; |
| 1059 | else |
| 1060 | { |
| 1061 | #if defined (__GNUC__) || defined (HAVE_LONG_DOUBLE) |
| 1062 | arg_type = LongDouble; |
| 1063 | #else |
| 1064 | arg_type = Double; |
| 1065 | #endif |
| 1066 | } |
| 1067 | } |
| 1068 | break; |
| 1069 | case 's': |
| 1070 | arg_type = Ptr; |
| 1071 | break; |
| 1072 | case 'p': |
| 1073 | if (*ptr == 'A' || *ptr == 'B') |
| 1074 | ptr++; |
| 1075 | arg_type = Ptr; |
| 1076 | break; |
| 1077 | default: |
| 1078 | abort(); |
| 1079 | } |
| 1080 | |
| 1081 | if (arg_no >= 9) |
| 1082 | abort (); |
| 1083 | args[arg_no].type = arg_type; |
| 1084 | arg_count++; |
| 1085 | } |
| 1086 | } |
| 1087 | |
| 1088 | return arg_count; |
| 1089 | } |
| 1090 | |
| 1091 | static void |
| 1092 | error_handler_internal (const char *fmt, va_list ap) |
| 1093 | { |
| 1094 | unsigned int i, arg_count; |
| 1095 | union _bfd_doprnt_args args[9]; |
| 1096 | |
| 1097 | for (i = 0; i < sizeof (args) / sizeof (args[0]); i++) |
| 1098 | args[i].type = Bad; |
| 1099 | |
| 1100 | arg_count = _bfd_doprnt_scan (fmt, args); |
| 1101 | for (i = 0; i < arg_count; i++) |
| 1102 | { |
| 1103 | switch (args[i].type) |
| 1104 | { |
| 1105 | case Int: |
| 1106 | args[i].i = va_arg (ap, int); |
| 1107 | break; |
| 1108 | case Long: |
| 1109 | args[i].l = va_arg (ap, long); |
| 1110 | break; |
| 1111 | case LongLong: |
| 1112 | args[i].ll = va_arg (ap, long long); |
| 1113 | break; |
| 1114 | case Double: |
| 1115 | args[i].d = va_arg (ap, double); |
| 1116 | break; |
| 1117 | case LongDouble: |
| 1118 | args[i].ld = va_arg (ap, long double); |
| 1119 | break; |
| 1120 | case Ptr: |
| 1121 | args[i].p = va_arg (ap, void *); |
| 1122 | break; |
| 1123 | default: |
| 1124 | abort (); |
| 1125 | } |
| 1126 | } |
| 1127 | |
| 1128 | /* PR 4992: Don't interrupt output being sent to stdout. */ |
| 1129 | fflush (stdout); |
| 1130 | |
| 1131 | if (_bfd_error_program_name != NULL) |
| 1132 | fprintf (stderr, "%s: ", _bfd_error_program_name); |
| 1133 | else |
| 1134 | fprintf (stderr, "BFD: "); |
| 1135 | |
| 1136 | _bfd_doprnt (stderr, fmt, args); |
| 1137 | |
| 1138 | /* On AIX, putc is implemented as a macro that triggers a -Wunused-value |
| 1139 | warning, so use the fputc function to avoid it. */ |
| 1140 | fputc ('\n', stderr); |
| 1141 | fflush (stderr); |
| 1142 | } |
| 1143 | |
| 1144 | /* This is a function pointer to the routine which should handle BFD |
| 1145 | error messages. It is called when a BFD routine encounters an |
| 1146 | error for which it wants to print a message. Going through a |
| 1147 | function pointer permits a program linked against BFD to intercept |
| 1148 | the messages and deal with them itself. */ |
| 1149 | |
| 1150 | static bfd_error_handler_type _bfd_error_internal = error_handler_internal; |
| 1151 | |
| 1152 | /* |
| 1153 | FUNCTION |
| 1154 | _bfd_error_handler |
| 1155 | |
| 1156 | SYNOPSIS |
| 1157 | void _bfd_error_handler (const char *fmt, ...) ATTRIBUTE_PRINTF_1; |
| 1158 | |
| 1159 | DESCRIPTION |
| 1160 | This is the default routine to handle BFD error messages. |
| 1161 | Like fprintf (stderr, ...), but also handles some extra format |
| 1162 | specifiers. |
| 1163 | |
| 1164 | %pA section name from section. For group components, prints |
| 1165 | group name too. |
| 1166 | %pB file name from bfd. For archive components, prints |
| 1167 | archive too. |
| 1168 | |
| 1169 | Beware: Only supports a maximum of 9 format arguments. |
| 1170 | */ |
| 1171 | |
| 1172 | void |
| 1173 | _bfd_error_handler (const char *fmt, ...) |
| 1174 | { |
| 1175 | va_list ap; |
| 1176 | |
| 1177 | va_start (ap, fmt); |
| 1178 | _bfd_error_internal (fmt, ap); |
| 1179 | va_end (ap); |
| 1180 | } |
| 1181 | |
| 1182 | /* |
| 1183 | FUNCTION |
| 1184 | bfd_set_error_handler |
| 1185 | |
| 1186 | SYNOPSIS |
| 1187 | bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type); |
| 1188 | |
| 1189 | DESCRIPTION |
| 1190 | Set the BFD error handler function. Returns the previous |
| 1191 | function. |
| 1192 | */ |
| 1193 | |
| 1194 | bfd_error_handler_type |
| 1195 | bfd_set_error_handler (bfd_error_handler_type pnew) |
| 1196 | { |
| 1197 | bfd_error_handler_type pold; |
| 1198 | |
| 1199 | pold = _bfd_error_internal; |
| 1200 | _bfd_error_internal = pnew; |
| 1201 | return pold; |
| 1202 | } |
| 1203 | |
| 1204 | /* |
| 1205 | FUNCTION |
| 1206 | bfd_set_error_program_name |
| 1207 | |
| 1208 | SYNOPSIS |
| 1209 | void bfd_set_error_program_name (const char *); |
| 1210 | |
| 1211 | DESCRIPTION |
| 1212 | Set the program name to use when printing a BFD error. This |
| 1213 | is printed before the error message followed by a colon and |
| 1214 | space. The string must not be changed after it is passed to |
| 1215 | this function. |
| 1216 | */ |
| 1217 | |
| 1218 | void |
| 1219 | bfd_set_error_program_name (const char *name) |
| 1220 | { |
| 1221 | _bfd_error_program_name = name; |
| 1222 | } |
| 1223 | |
| 1224 | /* |
| 1225 | SUBSECTION |
| 1226 | BFD assert handler |
| 1227 | |
| 1228 | If BFD finds an internal inconsistency, the bfd assert |
| 1229 | handler is called with information on the BFD version, BFD |
| 1230 | source file and line. If this happens, most programs linked |
| 1231 | against BFD are expected to want to exit with an error, or mark |
| 1232 | the current BFD operation as failed, so it is recommended to |
| 1233 | override the default handler, which just calls |
| 1234 | _bfd_error_handler and continues. |
| 1235 | |
| 1236 | CODE_FRAGMENT |
| 1237 | . |
| 1238 | .typedef void (*bfd_assert_handler_type) (const char *bfd_formatmsg, |
| 1239 | . const char *bfd_version, |
| 1240 | . const char *bfd_file, |
| 1241 | . int bfd_line); |
| 1242 | . |
| 1243 | */ |
| 1244 | |
| 1245 | /* Note the use of bfd_ prefix on the parameter names above: we want to |
| 1246 | show which one is the message and which is the version by naming the |
| 1247 | parameters, but avoid polluting the program-using-bfd namespace as |
| 1248 | the typedef is visible in the exported headers that the program |
| 1249 | includes. Below, it's just for consistency. */ |
| 1250 | |
| 1251 | static void |
| 1252 | _bfd_default_assert_handler (const char *bfd_formatmsg, |
| 1253 | const char *bfd_version, |
| 1254 | const char *bfd_file, |
| 1255 | int bfd_line) |
| 1256 | |
| 1257 | { |
| 1258 | _bfd_error_handler (bfd_formatmsg, bfd_version, bfd_file, bfd_line); |
| 1259 | } |
| 1260 | |
| 1261 | /* Similar to _bfd_error_handler, a program can decide to exit on an |
| 1262 | internal BFD error. We use a non-variadic type to simplify passing |
| 1263 | on parameters to other functions, e.g. _bfd_error_handler. */ |
| 1264 | |
| 1265 | static bfd_assert_handler_type _bfd_assert_handler = _bfd_default_assert_handler; |
| 1266 | |
| 1267 | /* |
| 1268 | FUNCTION |
| 1269 | bfd_set_assert_handler |
| 1270 | |
| 1271 | SYNOPSIS |
| 1272 | bfd_assert_handler_type bfd_set_assert_handler (bfd_assert_handler_type); |
| 1273 | |
| 1274 | DESCRIPTION |
| 1275 | Set the BFD assert handler function. Returns the previous |
| 1276 | function. |
| 1277 | */ |
| 1278 | |
| 1279 | bfd_assert_handler_type |
| 1280 | bfd_set_assert_handler (bfd_assert_handler_type pnew) |
| 1281 | { |
| 1282 | bfd_assert_handler_type pold; |
| 1283 | |
| 1284 | pold = _bfd_assert_handler; |
| 1285 | _bfd_assert_handler = pnew; |
| 1286 | return pold; |
| 1287 | } |
| 1288 | \f |
| 1289 | /* |
| 1290 | INODE |
| 1291 | Miscellaneous, Memory Usage, Error reporting, BFD front end |
| 1292 | |
| 1293 | SECTION |
| 1294 | Miscellaneous |
| 1295 | |
| 1296 | SUBSECTION |
| 1297 | Miscellaneous functions |
| 1298 | */ |
| 1299 | |
| 1300 | /* |
| 1301 | FUNCTION |
| 1302 | bfd_get_reloc_upper_bound |
| 1303 | |
| 1304 | SYNOPSIS |
| 1305 | long bfd_get_reloc_upper_bound (bfd *abfd, asection *sect); |
| 1306 | |
| 1307 | DESCRIPTION |
| 1308 | Return the number of bytes required to store the |
| 1309 | relocation information associated with section @var{sect} |
| 1310 | attached to bfd @var{abfd}. If an error occurs, return -1. |
| 1311 | |
| 1312 | */ |
| 1313 | |
| 1314 | long |
| 1315 | bfd_get_reloc_upper_bound (bfd *abfd, sec_ptr asect) |
| 1316 | { |
| 1317 | if (abfd->format != bfd_object) |
| 1318 | { |
| 1319 | bfd_set_error (bfd_error_invalid_operation); |
| 1320 | return -1; |
| 1321 | } |
| 1322 | |
| 1323 | return BFD_SEND (abfd, _get_reloc_upper_bound, (abfd, asect)); |
| 1324 | } |
| 1325 | |
| 1326 | /* |
| 1327 | FUNCTION |
| 1328 | bfd_canonicalize_reloc |
| 1329 | |
| 1330 | SYNOPSIS |
| 1331 | long bfd_canonicalize_reloc |
| 1332 | (bfd *abfd, asection *sec, arelent **loc, asymbol **syms); |
| 1333 | |
| 1334 | DESCRIPTION |
| 1335 | Call the back end associated with the open BFD |
| 1336 | @var{abfd} and translate the external form of the relocation |
| 1337 | information attached to @var{sec} into the internal canonical |
| 1338 | form. Place the table into memory at @var{loc}, which has |
| 1339 | been preallocated, usually by a call to |
| 1340 | <<bfd_get_reloc_upper_bound>>. Returns the number of relocs, or |
| 1341 | -1 on error. |
| 1342 | |
| 1343 | The @var{syms} table is also needed for horrible internal magic |
| 1344 | reasons. |
| 1345 | |
| 1346 | */ |
| 1347 | long |
| 1348 | bfd_canonicalize_reloc (bfd *abfd, |
| 1349 | sec_ptr asect, |
| 1350 | arelent **location, |
| 1351 | asymbol **symbols) |
| 1352 | { |
| 1353 | if (abfd->format != bfd_object) |
| 1354 | { |
| 1355 | bfd_set_error (bfd_error_invalid_operation); |
| 1356 | return -1; |
| 1357 | } |
| 1358 | |
| 1359 | return BFD_SEND (abfd, _bfd_canonicalize_reloc, |
| 1360 | (abfd, asect, location, symbols)); |
| 1361 | } |
| 1362 | |
| 1363 | /* |
| 1364 | FUNCTION |
| 1365 | bfd_set_reloc |
| 1366 | |
| 1367 | SYNOPSIS |
| 1368 | void bfd_set_reloc |
| 1369 | (bfd *abfd, asection *sec, arelent **rel, unsigned int count); |
| 1370 | |
| 1371 | DESCRIPTION |
| 1372 | Set the relocation pointer and count within |
| 1373 | section @var{sec} to the values @var{rel} and @var{count}. |
| 1374 | The argument @var{abfd} is ignored. |
| 1375 | |
| 1376 | .#define bfd_set_reloc(abfd, asect, location, count) \ |
| 1377 | . BFD_SEND (abfd, _bfd_set_reloc, (abfd, asect, location, count)) |
| 1378 | */ |
| 1379 | |
| 1380 | /* |
| 1381 | FUNCTION |
| 1382 | bfd_set_file_flags |
| 1383 | |
| 1384 | SYNOPSIS |
| 1385 | bfd_boolean bfd_set_file_flags (bfd *abfd, flagword flags); |
| 1386 | |
| 1387 | DESCRIPTION |
| 1388 | Set the flag word in the BFD @var{abfd} to the value @var{flags}. |
| 1389 | |
| 1390 | Possible errors are: |
| 1391 | o <<bfd_error_wrong_format>> - The target bfd was not of object format. |
| 1392 | o <<bfd_error_invalid_operation>> - The target bfd was open for reading. |
| 1393 | o <<bfd_error_invalid_operation>> - |
| 1394 | The flag word contained a bit which was not applicable to the |
| 1395 | type of file. E.g., an attempt was made to set the <<D_PAGED>> bit |
| 1396 | on a BFD format which does not support demand paging. |
| 1397 | |
| 1398 | */ |
| 1399 | |
| 1400 | bfd_boolean |
| 1401 | bfd_set_file_flags (bfd *abfd, flagword flags) |
| 1402 | { |
| 1403 | if (abfd->format != bfd_object) |
| 1404 | { |
| 1405 | bfd_set_error (bfd_error_wrong_format); |
| 1406 | return FALSE; |
| 1407 | } |
| 1408 | |
| 1409 | if (bfd_read_p (abfd)) |
| 1410 | { |
| 1411 | bfd_set_error (bfd_error_invalid_operation); |
| 1412 | return FALSE; |
| 1413 | } |
| 1414 | |
| 1415 | bfd_get_file_flags (abfd) = flags; |
| 1416 | if ((flags & bfd_applicable_file_flags (abfd)) != flags) |
| 1417 | { |
| 1418 | bfd_set_error (bfd_error_invalid_operation); |
| 1419 | return FALSE; |
| 1420 | } |
| 1421 | |
| 1422 | return TRUE; |
| 1423 | } |
| 1424 | |
| 1425 | void |
| 1426 | bfd_assert (const char *file, int line) |
| 1427 | { |
| 1428 | /* xgettext:c-format */ |
| 1429 | (*_bfd_assert_handler) (_("BFD %s assertion fail %s:%d"), |
| 1430 | BFD_VERSION_STRING, file, line); |
| 1431 | } |
| 1432 | |
| 1433 | /* A more or less friendly abort message. In libbfd.h abort is |
| 1434 | defined to call this function. */ |
| 1435 | |
| 1436 | void |
| 1437 | _bfd_abort (const char *file, int line, const char *fn) |
| 1438 | { |
| 1439 | if (fn != NULL) |
| 1440 | _bfd_error_handler |
| 1441 | /* xgettext:c-format */ |
| 1442 | (_("BFD %s internal error, aborting at %s:%d in %s\n"), |
| 1443 | BFD_VERSION_STRING, file, line, fn); |
| 1444 | else |
| 1445 | _bfd_error_handler |
| 1446 | /* xgettext:c-format */ |
| 1447 | (_("BFD %s internal error, aborting at %s:%d\n"), |
| 1448 | BFD_VERSION_STRING, file, line); |
| 1449 | _bfd_error_handler (_("Please report this bug.\n")); |
| 1450 | _exit (EXIT_FAILURE); |
| 1451 | } |
| 1452 | |
| 1453 | /* |
| 1454 | FUNCTION |
| 1455 | bfd_get_arch_size |
| 1456 | |
| 1457 | SYNOPSIS |
| 1458 | int bfd_get_arch_size (bfd *abfd); |
| 1459 | |
| 1460 | DESCRIPTION |
| 1461 | Returns the normalized architecture address size, in bits, as |
| 1462 | determined by the object file's format. By normalized, we mean |
| 1463 | either 32 or 64. For ELF, this information is included in the |
| 1464 | header. Use bfd_arch_bits_per_address for number of bits in |
| 1465 | the architecture address. |
| 1466 | |
| 1467 | RETURNS |
| 1468 | Returns the arch size in bits if known, <<-1>> otherwise. |
| 1469 | */ |
| 1470 | |
| 1471 | int |
| 1472 | bfd_get_arch_size (bfd *abfd) |
| 1473 | { |
| 1474 | if (abfd->xvec->flavour == bfd_target_elf_flavour) |
| 1475 | return get_elf_backend_data (abfd)->s->arch_size; |
| 1476 | |
| 1477 | return bfd_arch_bits_per_address (abfd) > 32 ? 64 : 32; |
| 1478 | } |
| 1479 | |
| 1480 | /* |
| 1481 | FUNCTION |
| 1482 | bfd_get_sign_extend_vma |
| 1483 | |
| 1484 | SYNOPSIS |
| 1485 | int bfd_get_sign_extend_vma (bfd *abfd); |
| 1486 | |
| 1487 | DESCRIPTION |
| 1488 | Indicates if the target architecture "naturally" sign extends |
| 1489 | an address. Some architectures implicitly sign extend address |
| 1490 | values when they are converted to types larger than the size |
| 1491 | of an address. For instance, bfd_get_start_address() will |
| 1492 | return an address sign extended to fill a bfd_vma when this is |
| 1493 | the case. |
| 1494 | |
| 1495 | RETURNS |
| 1496 | Returns <<1>> if the target architecture is known to sign |
| 1497 | extend addresses, <<0>> if the target architecture is known to |
| 1498 | not sign extend addresses, and <<-1>> otherwise. |
| 1499 | */ |
| 1500 | |
| 1501 | int |
| 1502 | bfd_get_sign_extend_vma (bfd *abfd) |
| 1503 | { |
| 1504 | char *name; |
| 1505 | |
| 1506 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) |
| 1507 | return get_elf_backend_data (abfd)->sign_extend_vma; |
| 1508 | |
| 1509 | name = bfd_get_target (abfd); |
| 1510 | |
| 1511 | /* Return a proper value for DJGPP & PE COFF. |
| 1512 | This function is required for DWARF2 support, but there is |
| 1513 | no place to store this information in the COFF back end. |
| 1514 | Should enough other COFF targets add support for DWARF2, |
| 1515 | a place will have to be found. Until then, this hack will do. */ |
| 1516 | if (CONST_STRNEQ (name, "coff-go32") |
| 1517 | || strcmp (name, "pe-i386") == 0 |
| 1518 | || strcmp (name, "pei-i386") == 0 |
| 1519 | || strcmp (name, "pe-x86-64") == 0 |
| 1520 | || strcmp (name, "pei-x86-64") == 0 |
| 1521 | || strcmp (name, "pe-arm-wince-little") == 0 |
| 1522 | || strcmp (name, "pei-arm-wince-little") == 0 |
| 1523 | || strcmp (name, "aixcoff-rs6000") == 0 |
| 1524 | || strcmp (name, "aix5coff64-rs6000") == 0) |
| 1525 | return 1; |
| 1526 | |
| 1527 | if (CONST_STRNEQ (name, "mach-o")) |
| 1528 | return 0; |
| 1529 | |
| 1530 | bfd_set_error (bfd_error_wrong_format); |
| 1531 | return -1; |
| 1532 | } |
| 1533 | |
| 1534 | /* |
| 1535 | FUNCTION |
| 1536 | bfd_set_start_address |
| 1537 | |
| 1538 | SYNOPSIS |
| 1539 | bfd_boolean bfd_set_start_address (bfd *abfd, bfd_vma vma); |
| 1540 | |
| 1541 | DESCRIPTION |
| 1542 | Make @var{vma} the entry point of output BFD @var{abfd}. |
| 1543 | |
| 1544 | RETURNS |
| 1545 | Returns <<TRUE>> on success, <<FALSE>> otherwise. |
| 1546 | */ |
| 1547 | |
| 1548 | bfd_boolean |
| 1549 | bfd_set_start_address (bfd *abfd, bfd_vma vma) |
| 1550 | { |
| 1551 | abfd->start_address = vma; |
| 1552 | return TRUE; |
| 1553 | } |
| 1554 | |
| 1555 | /* |
| 1556 | FUNCTION |
| 1557 | bfd_get_gp_size |
| 1558 | |
| 1559 | SYNOPSIS |
| 1560 | unsigned int bfd_get_gp_size (bfd *abfd); |
| 1561 | |
| 1562 | DESCRIPTION |
| 1563 | Return the maximum size of objects to be optimized using the GP |
| 1564 | register under MIPS ECOFF. This is typically set by the <<-G>> |
| 1565 | argument to the compiler, assembler or linker. |
| 1566 | */ |
| 1567 | |
| 1568 | unsigned int |
| 1569 | bfd_get_gp_size (bfd *abfd) |
| 1570 | { |
| 1571 | if (abfd->format == bfd_object) |
| 1572 | { |
| 1573 | if (abfd->xvec->flavour == bfd_target_ecoff_flavour) |
| 1574 | return ecoff_data (abfd)->gp_size; |
| 1575 | else if (abfd->xvec->flavour == bfd_target_elf_flavour) |
| 1576 | return elf_gp_size (abfd); |
| 1577 | } |
| 1578 | return 0; |
| 1579 | } |
| 1580 | |
| 1581 | /* |
| 1582 | FUNCTION |
| 1583 | bfd_set_gp_size |
| 1584 | |
| 1585 | SYNOPSIS |
| 1586 | void bfd_set_gp_size (bfd *abfd, unsigned int i); |
| 1587 | |
| 1588 | DESCRIPTION |
| 1589 | Set the maximum size of objects to be optimized using the GP |
| 1590 | register under ECOFF or MIPS ELF. This is typically set by |
| 1591 | the <<-G>> argument to the compiler, assembler or linker. |
| 1592 | */ |
| 1593 | |
| 1594 | void |
| 1595 | bfd_set_gp_size (bfd *abfd, unsigned int i) |
| 1596 | { |
| 1597 | /* Don't try to set GP size on an archive or core file! */ |
| 1598 | if (abfd->format != bfd_object) |
| 1599 | return; |
| 1600 | |
| 1601 | if (abfd->xvec->flavour == bfd_target_ecoff_flavour) |
| 1602 | ecoff_data (abfd)->gp_size = i; |
| 1603 | else if (abfd->xvec->flavour == bfd_target_elf_flavour) |
| 1604 | elf_gp_size (abfd) = i; |
| 1605 | } |
| 1606 | |
| 1607 | /* Get the GP value. This is an internal function used by some of the |
| 1608 | relocation special_function routines on targets which support a GP |
| 1609 | register. */ |
| 1610 | |
| 1611 | bfd_vma |
| 1612 | _bfd_get_gp_value (bfd *abfd) |
| 1613 | { |
| 1614 | if (! abfd) |
| 1615 | return 0; |
| 1616 | if (abfd->format != bfd_object) |
| 1617 | return 0; |
| 1618 | |
| 1619 | if (abfd->xvec->flavour == bfd_target_ecoff_flavour) |
| 1620 | return ecoff_data (abfd)->gp; |
| 1621 | else if (abfd->xvec->flavour == bfd_target_elf_flavour) |
| 1622 | return elf_gp (abfd); |
| 1623 | |
| 1624 | return 0; |
| 1625 | } |
| 1626 | |
| 1627 | /* Set the GP value. */ |
| 1628 | |
| 1629 | void |
| 1630 | _bfd_set_gp_value (bfd *abfd, bfd_vma v) |
| 1631 | { |
| 1632 | if (! abfd) |
| 1633 | abort (); |
| 1634 | if (abfd->format != bfd_object) |
| 1635 | return; |
| 1636 | |
| 1637 | if (abfd->xvec->flavour == bfd_target_ecoff_flavour) |
| 1638 | ecoff_data (abfd)->gp = v; |
| 1639 | else if (abfd->xvec->flavour == bfd_target_elf_flavour) |
| 1640 | elf_gp (abfd) = v; |
| 1641 | } |
| 1642 | |
| 1643 | /* |
| 1644 | FUNCTION |
| 1645 | bfd_scan_vma |
| 1646 | |
| 1647 | SYNOPSIS |
| 1648 | bfd_vma bfd_scan_vma (const char *string, const char **end, int base); |
| 1649 | |
| 1650 | DESCRIPTION |
| 1651 | Convert, like <<strtoul>>, a numerical expression |
| 1652 | @var{string} into a <<bfd_vma>> integer, and return that integer. |
| 1653 | (Though without as many bells and whistles as <<strtoul>>.) |
| 1654 | The expression is assumed to be unsigned (i.e., positive). |
| 1655 | If given a @var{base}, it is used as the base for conversion. |
| 1656 | A base of 0 causes the function to interpret the string |
| 1657 | in hex if a leading "0x" or "0X" is found, otherwise |
| 1658 | in octal if a leading zero is found, otherwise in decimal. |
| 1659 | |
| 1660 | If the value would overflow, the maximum <<bfd_vma>> value is |
| 1661 | returned. |
| 1662 | */ |
| 1663 | |
| 1664 | bfd_vma |
| 1665 | bfd_scan_vma (const char *string, const char **end, int base) |
| 1666 | { |
| 1667 | bfd_vma value; |
| 1668 | bfd_vma cutoff; |
| 1669 | unsigned int cutlim; |
| 1670 | int overflow; |
| 1671 | |
| 1672 | /* Let the host do it if possible. */ |
| 1673 | if (sizeof (bfd_vma) <= sizeof (unsigned long)) |
| 1674 | return strtoul (string, (char **) end, base); |
| 1675 | |
| 1676 | #if defined (HAVE_STRTOULL) && defined (HAVE_LONG_LONG) |
| 1677 | if (sizeof (bfd_vma) <= sizeof (unsigned long long)) |
| 1678 | return strtoull (string, (char **) end, base); |
| 1679 | #endif |
| 1680 | |
| 1681 | if (base == 0) |
| 1682 | { |
| 1683 | if (string[0] == '0') |
| 1684 | { |
| 1685 | if ((string[1] == 'x') || (string[1] == 'X')) |
| 1686 | base = 16; |
| 1687 | else |
| 1688 | base = 8; |
| 1689 | } |
| 1690 | } |
| 1691 | |
| 1692 | if ((base < 2) || (base > 36)) |
| 1693 | base = 10; |
| 1694 | |
| 1695 | if (base == 16 |
| 1696 | && string[0] == '0' |
| 1697 | && (string[1] == 'x' || string[1] == 'X') |
| 1698 | && ISXDIGIT (string[2])) |
| 1699 | { |
| 1700 | string += 2; |
| 1701 | } |
| 1702 | |
| 1703 | cutoff = (~ (bfd_vma) 0) / (bfd_vma) base; |
| 1704 | cutlim = (~ (bfd_vma) 0) % (bfd_vma) base; |
| 1705 | value = 0; |
| 1706 | overflow = 0; |
| 1707 | while (1) |
| 1708 | { |
| 1709 | unsigned int digit; |
| 1710 | |
| 1711 | digit = *string; |
| 1712 | if (ISDIGIT (digit)) |
| 1713 | digit = digit - '0'; |
| 1714 | else if (ISALPHA (digit)) |
| 1715 | digit = TOUPPER (digit) - 'A' + 10; |
| 1716 | else |
| 1717 | break; |
| 1718 | if (digit >= (unsigned int) base) |
| 1719 | break; |
| 1720 | if (value > cutoff || (value == cutoff && digit > cutlim)) |
| 1721 | overflow = 1; |
| 1722 | value = value * base + digit; |
| 1723 | ++string; |
| 1724 | } |
| 1725 | |
| 1726 | if (overflow) |
| 1727 | value = ~ (bfd_vma) 0; |
| 1728 | |
| 1729 | if (end != NULL) |
| 1730 | *end = string; |
| 1731 | |
| 1732 | return value; |
| 1733 | } |
| 1734 | |
| 1735 | /* |
| 1736 | FUNCTION |
| 1737 | bfd_copy_private_header_data |
| 1738 | |
| 1739 | SYNOPSIS |
| 1740 | bfd_boolean bfd_copy_private_header_data (bfd *ibfd, bfd *obfd); |
| 1741 | |
| 1742 | DESCRIPTION |
| 1743 | Copy private BFD header information from the BFD @var{ibfd} to the |
| 1744 | the BFD @var{obfd}. This copies information that may require |
| 1745 | sections to exist, but does not require symbol tables. Return |
| 1746 | <<true>> on success, <<false>> on error. |
| 1747 | Possible error returns are: |
| 1748 | |
| 1749 | o <<bfd_error_no_memory>> - |
| 1750 | Not enough memory exists to create private data for @var{obfd}. |
| 1751 | |
| 1752 | .#define bfd_copy_private_header_data(ibfd, obfd) \ |
| 1753 | . BFD_SEND (obfd, _bfd_copy_private_header_data, \ |
| 1754 | . (ibfd, obfd)) |
| 1755 | |
| 1756 | */ |
| 1757 | |
| 1758 | /* |
| 1759 | FUNCTION |
| 1760 | bfd_copy_private_bfd_data |
| 1761 | |
| 1762 | SYNOPSIS |
| 1763 | bfd_boolean bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd); |
| 1764 | |
| 1765 | DESCRIPTION |
| 1766 | Copy private BFD information from the BFD @var{ibfd} to the |
| 1767 | the BFD @var{obfd}. Return <<TRUE>> on success, <<FALSE>> on error. |
| 1768 | Possible error returns are: |
| 1769 | |
| 1770 | o <<bfd_error_no_memory>> - |
| 1771 | Not enough memory exists to create private data for @var{obfd}. |
| 1772 | |
| 1773 | .#define bfd_copy_private_bfd_data(ibfd, obfd) \ |
| 1774 | . BFD_SEND (obfd, _bfd_copy_private_bfd_data, \ |
| 1775 | . (ibfd, obfd)) |
| 1776 | |
| 1777 | */ |
| 1778 | |
| 1779 | /* |
| 1780 | FUNCTION |
| 1781 | bfd_set_private_flags |
| 1782 | |
| 1783 | SYNOPSIS |
| 1784 | bfd_boolean bfd_set_private_flags (bfd *abfd, flagword flags); |
| 1785 | |
| 1786 | DESCRIPTION |
| 1787 | Set private BFD flag information in the BFD @var{abfd}. |
| 1788 | Return <<TRUE>> on success, <<FALSE>> on error. Possible error |
| 1789 | returns are: |
| 1790 | |
| 1791 | o <<bfd_error_no_memory>> - |
| 1792 | Not enough memory exists to create private data for @var{obfd}. |
| 1793 | |
| 1794 | .#define bfd_set_private_flags(abfd, flags) \ |
| 1795 | . BFD_SEND (abfd, _bfd_set_private_flags, (abfd, flags)) |
| 1796 | |
| 1797 | */ |
| 1798 | |
| 1799 | /* |
| 1800 | FUNCTION |
| 1801 | Other functions |
| 1802 | |
| 1803 | DESCRIPTION |
| 1804 | The following functions exist but have not yet been documented. |
| 1805 | |
| 1806 | .#define bfd_sizeof_headers(abfd, info) \ |
| 1807 | . BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, info)) |
| 1808 | . |
| 1809 | .#define bfd_find_nearest_line(abfd, sec, syms, off, file, func, line) \ |
| 1810 | . BFD_SEND (abfd, _bfd_find_nearest_line, \ |
| 1811 | . (abfd, syms, sec, off, file, func, line, NULL)) |
| 1812 | . |
| 1813 | .#define bfd_find_nearest_line_discriminator(abfd, sec, syms, off, file, func, \ |
| 1814 | . line, disc) \ |
| 1815 | . BFD_SEND (abfd, _bfd_find_nearest_line, \ |
| 1816 | . (abfd, syms, sec, off, file, func, line, disc)) |
| 1817 | . |
| 1818 | .#define bfd_find_line(abfd, syms, sym, file, line) \ |
| 1819 | . BFD_SEND (abfd, _bfd_find_line, \ |
| 1820 | . (abfd, syms, sym, file, line)) |
| 1821 | . |
| 1822 | .#define bfd_find_inliner_info(abfd, file, func, line) \ |
| 1823 | . BFD_SEND (abfd, _bfd_find_inliner_info, \ |
| 1824 | . (abfd, file, func, line)) |
| 1825 | . |
| 1826 | .#define bfd_debug_info_start(abfd) \ |
| 1827 | . BFD_SEND (abfd, _bfd_debug_info_start, (abfd)) |
| 1828 | . |
| 1829 | .#define bfd_debug_info_end(abfd) \ |
| 1830 | . BFD_SEND (abfd, _bfd_debug_info_end, (abfd)) |
| 1831 | . |
| 1832 | .#define bfd_debug_info_accumulate(abfd, section) \ |
| 1833 | . BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section)) |
| 1834 | . |
| 1835 | .#define bfd_stat_arch_elt(abfd, stat) \ |
| 1836 | . BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat)) |
| 1837 | . |
| 1838 | .#define bfd_update_armap_timestamp(abfd) \ |
| 1839 | . BFD_SEND (abfd, _bfd_update_armap_timestamp, (abfd)) |
| 1840 | . |
| 1841 | .#define bfd_set_arch_mach(abfd, arch, mach)\ |
| 1842 | . BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach)) |
| 1843 | . |
| 1844 | .#define bfd_relax_section(abfd, section, link_info, again) \ |
| 1845 | . BFD_SEND (abfd, _bfd_relax_section, (abfd, section, link_info, again)) |
| 1846 | . |
| 1847 | .#define bfd_gc_sections(abfd, link_info) \ |
| 1848 | . BFD_SEND (abfd, _bfd_gc_sections, (abfd, link_info)) |
| 1849 | . |
| 1850 | .#define bfd_lookup_section_flags(link_info, flag_info, section) \ |
| 1851 | . BFD_SEND (abfd, _bfd_lookup_section_flags, (link_info, flag_info, section)) |
| 1852 | . |
| 1853 | .#define bfd_merge_sections(abfd, link_info) \ |
| 1854 | . BFD_SEND (abfd, _bfd_merge_sections, (abfd, link_info)) |
| 1855 | . |
| 1856 | .#define bfd_is_group_section(abfd, sec) \ |
| 1857 | . BFD_SEND (abfd, _bfd_is_group_section, (abfd, sec)) |
| 1858 | . |
| 1859 | .#define bfd_discard_group(abfd, sec) \ |
| 1860 | . BFD_SEND (abfd, _bfd_discard_group, (abfd, sec)) |
| 1861 | . |
| 1862 | .#define bfd_link_hash_table_create(abfd) \ |
| 1863 | . BFD_SEND (abfd, _bfd_link_hash_table_create, (abfd)) |
| 1864 | . |
| 1865 | .#define bfd_link_add_symbols(abfd, info) \ |
| 1866 | . BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info)) |
| 1867 | . |
| 1868 | .#define bfd_link_just_syms(abfd, sec, info) \ |
| 1869 | . BFD_SEND (abfd, _bfd_link_just_syms, (sec, info)) |
| 1870 | . |
| 1871 | .#define bfd_final_link(abfd, info) \ |
| 1872 | . BFD_SEND (abfd, _bfd_final_link, (abfd, info)) |
| 1873 | . |
| 1874 | .#define bfd_free_cached_info(abfd) \ |
| 1875 | . BFD_SEND (abfd, _bfd_free_cached_info, (abfd)) |
| 1876 | . |
| 1877 | .#define bfd_get_dynamic_symtab_upper_bound(abfd) \ |
| 1878 | . BFD_SEND (abfd, _bfd_get_dynamic_symtab_upper_bound, (abfd)) |
| 1879 | . |
| 1880 | .#define bfd_print_private_bfd_data(abfd, file)\ |
| 1881 | . BFD_SEND (abfd, _bfd_print_private_bfd_data, (abfd, file)) |
| 1882 | . |
| 1883 | .#define bfd_canonicalize_dynamic_symtab(abfd, asymbols) \ |
| 1884 | . BFD_SEND (abfd, _bfd_canonicalize_dynamic_symtab, (abfd, asymbols)) |
| 1885 | . |
| 1886 | .#define bfd_get_synthetic_symtab(abfd, count, syms, dyncount, dynsyms, ret) \ |
| 1887 | . BFD_SEND (abfd, _bfd_get_synthetic_symtab, (abfd, count, syms, \ |
| 1888 | . dyncount, dynsyms, ret)) |
| 1889 | . |
| 1890 | .#define bfd_get_dynamic_reloc_upper_bound(abfd) \ |
| 1891 | . BFD_SEND (abfd, _bfd_get_dynamic_reloc_upper_bound, (abfd)) |
| 1892 | . |
| 1893 | .#define bfd_canonicalize_dynamic_reloc(abfd, arels, asyms) \ |
| 1894 | . BFD_SEND (abfd, _bfd_canonicalize_dynamic_reloc, (abfd, arels, asyms)) |
| 1895 | . |
| 1896 | .extern bfd_byte *bfd_get_relocated_section_contents |
| 1897 | . (bfd *, struct bfd_link_info *, struct bfd_link_order *, bfd_byte *, |
| 1898 | . bfd_boolean, asymbol **); |
| 1899 | . |
| 1900 | |
| 1901 | */ |
| 1902 | |
| 1903 | bfd_byte * |
| 1904 | bfd_get_relocated_section_contents (bfd *abfd, |
| 1905 | struct bfd_link_info *link_info, |
| 1906 | struct bfd_link_order *link_order, |
| 1907 | bfd_byte *data, |
| 1908 | bfd_boolean relocatable, |
| 1909 | asymbol **symbols) |
| 1910 | { |
| 1911 | bfd *abfd2; |
| 1912 | bfd_byte *(*fn) (bfd *, struct bfd_link_info *, struct bfd_link_order *, |
| 1913 | bfd_byte *, bfd_boolean, asymbol **); |
| 1914 | |
| 1915 | if (link_order->type == bfd_indirect_link_order) |
| 1916 | { |
| 1917 | abfd2 = link_order->u.indirect.section->owner; |
| 1918 | if (abfd2 == NULL) |
| 1919 | abfd2 = abfd; |
| 1920 | } |
| 1921 | else |
| 1922 | abfd2 = abfd; |
| 1923 | |
| 1924 | fn = abfd2->xvec->_bfd_get_relocated_section_contents; |
| 1925 | |
| 1926 | return (*fn) (abfd, link_info, link_order, data, relocatable, symbols); |
| 1927 | } |
| 1928 | |
| 1929 | /* Record information about an ELF program header. */ |
| 1930 | |
| 1931 | bfd_boolean |
| 1932 | bfd_record_phdr (bfd *abfd, |
| 1933 | unsigned long type, |
| 1934 | bfd_boolean flags_valid, |
| 1935 | flagword flags, |
| 1936 | bfd_boolean at_valid, |
| 1937 | bfd_vma at, |
| 1938 | bfd_boolean includes_filehdr, |
| 1939 | bfd_boolean includes_phdrs, |
| 1940 | unsigned int count, |
| 1941 | asection **secs) |
| 1942 | { |
| 1943 | struct elf_segment_map *m, **pm; |
| 1944 | bfd_size_type amt; |
| 1945 | |
| 1946 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour) |
| 1947 | return TRUE; |
| 1948 | |
| 1949 | amt = sizeof (struct elf_segment_map); |
| 1950 | amt += ((bfd_size_type) count - 1) * sizeof (asection *); |
| 1951 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
| 1952 | if (m == NULL) |
| 1953 | return FALSE; |
| 1954 | |
| 1955 | m->p_type = type; |
| 1956 | m->p_flags = flags; |
| 1957 | m->p_paddr = at; |
| 1958 | m->p_flags_valid = flags_valid; |
| 1959 | m->p_paddr_valid = at_valid; |
| 1960 | m->includes_filehdr = includes_filehdr; |
| 1961 | m->includes_phdrs = includes_phdrs; |
| 1962 | m->count = count; |
| 1963 | if (count > 0) |
| 1964 | memcpy (m->sections, secs, count * sizeof (asection *)); |
| 1965 | |
| 1966 | for (pm = &elf_seg_map (abfd); *pm != NULL; pm = &(*pm)->next) |
| 1967 | ; |
| 1968 | *pm = m; |
| 1969 | |
| 1970 | return TRUE; |
| 1971 | } |
| 1972 | |
| 1973 | #ifdef BFD64 |
| 1974 | /* Return true iff this target is 32-bit. */ |
| 1975 | |
| 1976 | static bfd_boolean |
| 1977 | is32bit (bfd *abfd) |
| 1978 | { |
| 1979 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) |
| 1980 | { |
| 1981 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
| 1982 | return bed->s->elfclass == ELFCLASS32; |
| 1983 | } |
| 1984 | |
| 1985 | /* For non-ELF targets, use architecture information. */ |
| 1986 | return bfd_arch_bits_per_address (abfd) <= 32; |
| 1987 | } |
| 1988 | #endif |
| 1989 | |
| 1990 | /* bfd_sprintf_vma and bfd_fprintf_vma display an address in the |
| 1991 | target's address size. */ |
| 1992 | |
| 1993 | void |
| 1994 | bfd_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, bfd_vma value) |
| 1995 | { |
| 1996 | #ifdef BFD64 |
| 1997 | if (is32bit (abfd)) |
| 1998 | { |
| 1999 | sprintf (buf, "%08lx", (unsigned long) value & 0xffffffff); |
| 2000 | return; |
| 2001 | } |
| 2002 | #endif |
| 2003 | sprintf_vma (buf, value); |
| 2004 | } |
| 2005 | |
| 2006 | void |
| 2007 | bfd_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value) |
| 2008 | { |
| 2009 | #ifdef BFD64 |
| 2010 | if (is32bit (abfd)) |
| 2011 | { |
| 2012 | fprintf ((FILE *) stream, "%08lx", (unsigned long) value & 0xffffffff); |
| 2013 | return; |
| 2014 | } |
| 2015 | #endif |
| 2016 | fprintf_vma ((FILE *) stream, value); |
| 2017 | } |
| 2018 | |
| 2019 | /* |
| 2020 | FUNCTION |
| 2021 | bfd_alt_mach_code |
| 2022 | |
| 2023 | SYNOPSIS |
| 2024 | bfd_boolean bfd_alt_mach_code (bfd *abfd, int alternative); |
| 2025 | |
| 2026 | DESCRIPTION |
| 2027 | |
| 2028 | When more than one machine code number is available for the |
| 2029 | same machine type, this function can be used to switch between |
| 2030 | the preferred one (alternative == 0) and any others. Currently, |
| 2031 | only ELF supports this feature, with up to two alternate |
| 2032 | machine codes. |
| 2033 | */ |
| 2034 | |
| 2035 | bfd_boolean |
| 2036 | bfd_alt_mach_code (bfd *abfd, int alternative) |
| 2037 | { |
| 2038 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) |
| 2039 | { |
| 2040 | int code; |
| 2041 | |
| 2042 | switch (alternative) |
| 2043 | { |
| 2044 | case 0: |
| 2045 | code = get_elf_backend_data (abfd)->elf_machine_code; |
| 2046 | break; |
| 2047 | |
| 2048 | case 1: |
| 2049 | code = get_elf_backend_data (abfd)->elf_machine_alt1; |
| 2050 | if (code == 0) |
| 2051 | return FALSE; |
| 2052 | break; |
| 2053 | |
| 2054 | case 2: |
| 2055 | code = get_elf_backend_data (abfd)->elf_machine_alt2; |
| 2056 | if (code == 0) |
| 2057 | return FALSE; |
| 2058 | break; |
| 2059 | |
| 2060 | default: |
| 2061 | return FALSE; |
| 2062 | } |
| 2063 | |
| 2064 | elf_elfheader (abfd)->e_machine = code; |
| 2065 | |
| 2066 | return TRUE; |
| 2067 | } |
| 2068 | |
| 2069 | return FALSE; |
| 2070 | } |
| 2071 | |
| 2072 | /* |
| 2073 | FUNCTION |
| 2074 | bfd_emul_get_maxpagesize |
| 2075 | |
| 2076 | SYNOPSIS |
| 2077 | bfd_vma bfd_emul_get_maxpagesize (const char *); |
| 2078 | |
| 2079 | DESCRIPTION |
| 2080 | Returns the maximum page size, in bytes, as determined by |
| 2081 | emulation. |
| 2082 | |
| 2083 | RETURNS |
| 2084 | Returns the maximum page size in bytes for ELF, 0 otherwise. |
| 2085 | */ |
| 2086 | |
| 2087 | bfd_vma |
| 2088 | bfd_emul_get_maxpagesize (const char *emul) |
| 2089 | { |
| 2090 | const bfd_target *target; |
| 2091 | |
| 2092 | target = bfd_find_target (emul, NULL); |
| 2093 | if (target != NULL |
| 2094 | && target->flavour == bfd_target_elf_flavour) |
| 2095 | return xvec_get_elf_backend_data (target)->maxpagesize; |
| 2096 | |
| 2097 | return 0; |
| 2098 | } |
| 2099 | |
| 2100 | static void |
| 2101 | bfd_elf_set_pagesize (const bfd_target *target, bfd_vma size, |
| 2102 | int offset, const bfd_target *orig_target) |
| 2103 | { |
| 2104 | if (target->flavour == bfd_target_elf_flavour) |
| 2105 | { |
| 2106 | const struct elf_backend_data *bed; |
| 2107 | |
| 2108 | bed = xvec_get_elf_backend_data (target); |
| 2109 | *((bfd_vma *) ((char *) bed + offset)) = size; |
| 2110 | } |
| 2111 | |
| 2112 | if (target->alternative_target |
| 2113 | && target->alternative_target != orig_target) |
| 2114 | bfd_elf_set_pagesize (target->alternative_target, size, offset, |
| 2115 | orig_target); |
| 2116 | } |
| 2117 | |
| 2118 | /* |
| 2119 | FUNCTION |
| 2120 | bfd_emul_set_maxpagesize |
| 2121 | |
| 2122 | SYNOPSIS |
| 2123 | void bfd_emul_set_maxpagesize (const char *, bfd_vma); |
| 2124 | |
| 2125 | DESCRIPTION |
| 2126 | For ELF, set the maximum page size for the emulation. It is |
| 2127 | a no-op for other formats. |
| 2128 | |
| 2129 | */ |
| 2130 | |
| 2131 | void |
| 2132 | bfd_emul_set_maxpagesize (const char *emul, bfd_vma size) |
| 2133 | { |
| 2134 | const bfd_target *target; |
| 2135 | |
| 2136 | target = bfd_find_target (emul, NULL); |
| 2137 | if (target) |
| 2138 | bfd_elf_set_pagesize (target, size, |
| 2139 | offsetof (struct elf_backend_data, |
| 2140 | maxpagesize), target); |
| 2141 | } |
| 2142 | |
| 2143 | /* |
| 2144 | FUNCTION |
| 2145 | bfd_emul_get_commonpagesize |
| 2146 | |
| 2147 | SYNOPSIS |
| 2148 | bfd_vma bfd_emul_get_commonpagesize (const char *, bfd_boolean); |
| 2149 | |
| 2150 | DESCRIPTION |
| 2151 | Returns the common page size, in bytes, as determined by |
| 2152 | emulation. |
| 2153 | |
| 2154 | RETURNS |
| 2155 | Returns the common page size in bytes for ELF, 0 otherwise. |
| 2156 | */ |
| 2157 | |
| 2158 | bfd_vma |
| 2159 | bfd_emul_get_commonpagesize (const char *emul, bfd_boolean relro) |
| 2160 | { |
| 2161 | const bfd_target *target; |
| 2162 | |
| 2163 | target = bfd_find_target (emul, NULL); |
| 2164 | if (target != NULL |
| 2165 | && target->flavour == bfd_target_elf_flavour) |
| 2166 | { |
| 2167 | const struct elf_backend_data *bed; |
| 2168 | |
| 2169 | bed = xvec_get_elf_backend_data (target); |
| 2170 | if (relro) |
| 2171 | return bed->relropagesize; |
| 2172 | else |
| 2173 | return bed->commonpagesize; |
| 2174 | } |
| 2175 | return 0; |
| 2176 | } |
| 2177 | |
| 2178 | /* |
| 2179 | FUNCTION |
| 2180 | bfd_emul_set_commonpagesize |
| 2181 | |
| 2182 | SYNOPSIS |
| 2183 | void bfd_emul_set_commonpagesize (const char *, bfd_vma); |
| 2184 | |
| 2185 | DESCRIPTION |
| 2186 | For ELF, set the common page size for the emulation. It is |
| 2187 | a no-op for other formats. |
| 2188 | |
| 2189 | */ |
| 2190 | |
| 2191 | void |
| 2192 | bfd_emul_set_commonpagesize (const char *emul, bfd_vma size) |
| 2193 | { |
| 2194 | const bfd_target *target; |
| 2195 | |
| 2196 | target = bfd_find_target (emul, NULL); |
| 2197 | if (target) |
| 2198 | bfd_elf_set_pagesize (target, size, |
| 2199 | offsetof (struct elf_backend_data, |
| 2200 | commonpagesize), target); |
| 2201 | } |
| 2202 | |
| 2203 | /* |
| 2204 | FUNCTION |
| 2205 | bfd_demangle |
| 2206 | |
| 2207 | SYNOPSIS |
| 2208 | char *bfd_demangle (bfd *, const char *, int); |
| 2209 | |
| 2210 | DESCRIPTION |
| 2211 | Wrapper around cplus_demangle. Strips leading underscores and |
| 2212 | other such chars that would otherwise confuse the demangler. |
| 2213 | If passed a g++ v3 ABI mangled name, returns a buffer allocated |
| 2214 | with malloc holding the demangled name. Returns NULL otherwise |
| 2215 | and on memory alloc failure. |
| 2216 | */ |
| 2217 | |
| 2218 | char * |
| 2219 | bfd_demangle (bfd *abfd, const char *name, int options) |
| 2220 | { |
| 2221 | char *res, *alloc; |
| 2222 | const char *pre, *suf; |
| 2223 | size_t pre_len; |
| 2224 | bfd_boolean skip_lead; |
| 2225 | |
| 2226 | skip_lead = (abfd != NULL |
| 2227 | && *name != '\0' |
| 2228 | && bfd_get_symbol_leading_char (abfd) == *name); |
| 2229 | if (skip_lead) |
| 2230 | ++name; |
| 2231 | |
| 2232 | /* This is a hack for better error reporting on XCOFF, PowerPC64-ELF |
| 2233 | or the MS PE format. These formats have a number of leading '.'s |
| 2234 | on at least some symbols, so we remove all dots to avoid |
| 2235 | confusing the demangler. */ |
| 2236 | pre = name; |
| 2237 | while (*name == '.' || *name == '$') |
| 2238 | ++name; |
| 2239 | pre_len = name - pre; |
| 2240 | |
| 2241 | /* Strip off @plt and suchlike too. */ |
| 2242 | alloc = NULL; |
| 2243 | suf = strchr (name, '@'); |
| 2244 | if (suf != NULL) |
| 2245 | { |
| 2246 | alloc = (char *) bfd_malloc (suf - name + 1); |
| 2247 | if (alloc == NULL) |
| 2248 | return NULL; |
| 2249 | memcpy (alloc, name, suf - name); |
| 2250 | alloc[suf - name] = '\0'; |
| 2251 | name = alloc; |
| 2252 | } |
| 2253 | |
| 2254 | res = cplus_demangle (name, options); |
| 2255 | |
| 2256 | if (alloc != NULL) |
| 2257 | free (alloc); |
| 2258 | |
| 2259 | if (res == NULL) |
| 2260 | { |
| 2261 | if (skip_lead) |
| 2262 | { |
| 2263 | size_t len = strlen (pre) + 1; |
| 2264 | alloc = (char *) bfd_malloc (len); |
| 2265 | if (alloc == NULL) |
| 2266 | return NULL; |
| 2267 | memcpy (alloc, pre, len); |
| 2268 | return alloc; |
| 2269 | } |
| 2270 | return NULL; |
| 2271 | } |
| 2272 | |
| 2273 | /* Put back any prefix or suffix. */ |
| 2274 | if (pre_len != 0 || suf != NULL) |
| 2275 | { |
| 2276 | size_t len; |
| 2277 | size_t suf_len; |
| 2278 | char *final; |
| 2279 | |
| 2280 | len = strlen (res); |
| 2281 | if (suf == NULL) |
| 2282 | suf = res + len; |
| 2283 | suf_len = strlen (suf) + 1; |
| 2284 | final = (char *) bfd_malloc (pre_len + len + suf_len); |
| 2285 | if (final != NULL) |
| 2286 | { |
| 2287 | memcpy (final, pre, pre_len); |
| 2288 | memcpy (final + pre_len, res, len); |
| 2289 | memcpy (final + pre_len + len, suf, suf_len); |
| 2290 | } |
| 2291 | free (res); |
| 2292 | res = final; |
| 2293 | } |
| 2294 | |
| 2295 | return res; |
| 2296 | } |
| 2297 | |
| 2298 | /* |
| 2299 | FUNCTION |
| 2300 | bfd_update_compression_header |
| 2301 | |
| 2302 | SYNOPSIS |
| 2303 | void bfd_update_compression_header |
| 2304 | (bfd *abfd, bfd_byte *contents, asection *sec); |
| 2305 | |
| 2306 | DESCRIPTION |
| 2307 | Set the compression header at CONTENTS of SEC in ABFD and update |
| 2308 | elf_section_flags for compression. |
| 2309 | */ |
| 2310 | |
| 2311 | void |
| 2312 | bfd_update_compression_header (bfd *abfd, bfd_byte *contents, |
| 2313 | asection *sec) |
| 2314 | { |
| 2315 | if ((abfd->flags & BFD_COMPRESS) != 0) |
| 2316 | { |
| 2317 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) |
| 2318 | { |
| 2319 | if ((abfd->flags & BFD_COMPRESS_GABI) != 0) |
| 2320 | { |
| 2321 | const struct elf_backend_data *bed |
| 2322 | = get_elf_backend_data (abfd); |
| 2323 | |
| 2324 | /* Set the SHF_COMPRESSED bit. */ |
| 2325 | elf_section_flags (sec) |= SHF_COMPRESSED; |
| 2326 | |
| 2327 | if (bed->s->elfclass == ELFCLASS32) |
| 2328 | { |
| 2329 | Elf32_External_Chdr *echdr |
| 2330 | = (Elf32_External_Chdr *) contents; |
| 2331 | bfd_put_32 (abfd, ELFCOMPRESS_ZLIB, &echdr->ch_type); |
| 2332 | bfd_put_32 (abfd, sec->size, &echdr->ch_size); |
| 2333 | bfd_put_32 (abfd, 1 << sec->alignment_power, |
| 2334 | &echdr->ch_addralign); |
| 2335 | /* bfd_log2 (alignof (Elf32_Chdr)) */ |
| 2336 | bfd_set_section_alignment (abfd, sec, 2); |
| 2337 | } |
| 2338 | else |
| 2339 | { |
| 2340 | Elf64_External_Chdr *echdr |
| 2341 | = (Elf64_External_Chdr *) contents; |
| 2342 | bfd_put_32 (abfd, ELFCOMPRESS_ZLIB, &echdr->ch_type); |
| 2343 | bfd_put_32 (abfd, 0, &echdr->ch_reserved); |
| 2344 | bfd_put_64 (abfd, sec->size, &echdr->ch_size); |
| 2345 | bfd_put_64 (abfd, 1 << sec->alignment_power, |
| 2346 | &echdr->ch_addralign); |
| 2347 | /* bfd_log2 (alignof (Elf64_Chdr)) */ |
| 2348 | bfd_set_section_alignment (abfd, sec, 3); |
| 2349 | } |
| 2350 | } |
| 2351 | else |
| 2352 | { |
| 2353 | /* Clear the SHF_COMPRESSED bit. */ |
| 2354 | elf_section_flags (sec) &= ~SHF_COMPRESSED; |
| 2355 | |
| 2356 | /* Write the zlib header. It should be "ZLIB" followed by |
| 2357 | the uncompressed section size, 8 bytes in big-endian |
| 2358 | order. */ |
| 2359 | memcpy (contents, "ZLIB", 4); |
| 2360 | bfd_putb64 (sec->size, contents + 4); |
| 2361 | /* No way to keep the original alignment, just use 1 always. */ |
| 2362 | bfd_set_section_alignment (abfd, sec, 0); |
| 2363 | } |
| 2364 | } |
| 2365 | } |
| 2366 | else |
| 2367 | abort (); |
| 2368 | } |
| 2369 | |
| 2370 | /* |
| 2371 | FUNCTION |
| 2372 | bfd_check_compression_header |
| 2373 | |
| 2374 | SYNOPSIS |
| 2375 | bfd_boolean bfd_check_compression_header |
| 2376 | (bfd *abfd, bfd_byte *contents, asection *sec, |
| 2377 | bfd_size_type *uncompressed_size, |
| 2378 | unsigned int *uncompressed_alignment_power); |
| 2379 | |
| 2380 | DESCRIPTION |
| 2381 | Check the compression header at CONTENTS of SEC in ABFD and |
| 2382 | store the uncompressed size in UNCOMPRESSED_SIZE and the |
| 2383 | uncompressed data alignment in UNCOMPRESSED_ALIGNMENT_POWER |
| 2384 | if the compression header is valid. |
| 2385 | |
| 2386 | RETURNS |
| 2387 | Return TRUE if the compression header is valid. |
| 2388 | */ |
| 2389 | |
| 2390 | bfd_boolean |
| 2391 | bfd_check_compression_header (bfd *abfd, bfd_byte *contents, |
| 2392 | asection *sec, |
| 2393 | bfd_size_type *uncompressed_size, |
| 2394 | unsigned int *uncompressed_alignment_power) |
| 2395 | { |
| 2396 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour |
| 2397 | && (elf_section_flags (sec) & SHF_COMPRESSED) != 0) |
| 2398 | { |
| 2399 | Elf_Internal_Chdr chdr; |
| 2400 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
| 2401 | if (bed->s->elfclass == ELFCLASS32) |
| 2402 | { |
| 2403 | Elf32_External_Chdr *echdr = (Elf32_External_Chdr *) contents; |
| 2404 | chdr.ch_type = bfd_get_32 (abfd, &echdr->ch_type); |
| 2405 | chdr.ch_size = bfd_get_32 (abfd, &echdr->ch_size); |
| 2406 | chdr.ch_addralign = bfd_get_32 (abfd, &echdr->ch_addralign); |
| 2407 | } |
| 2408 | else |
| 2409 | { |
| 2410 | Elf64_External_Chdr *echdr = (Elf64_External_Chdr *) contents; |
| 2411 | chdr.ch_type = bfd_get_32 (abfd, &echdr->ch_type); |
| 2412 | chdr.ch_size = bfd_get_64 (abfd, &echdr->ch_size); |
| 2413 | chdr.ch_addralign = bfd_get_64 (abfd, &echdr->ch_addralign); |
| 2414 | } |
| 2415 | if (chdr.ch_type == ELFCOMPRESS_ZLIB |
| 2416 | && chdr.ch_addralign == (1U << bfd_log2 (chdr.ch_addralign))) |
| 2417 | { |
| 2418 | *uncompressed_size = chdr.ch_size; |
| 2419 | *uncompressed_alignment_power = bfd_log2 (chdr.ch_addralign); |
| 2420 | return TRUE; |
| 2421 | } |
| 2422 | } |
| 2423 | |
| 2424 | return FALSE; |
| 2425 | } |
| 2426 | |
| 2427 | /* |
| 2428 | FUNCTION |
| 2429 | bfd_get_compression_header_size |
| 2430 | |
| 2431 | SYNOPSIS |
| 2432 | int bfd_get_compression_header_size (bfd *abfd, asection *sec); |
| 2433 | |
| 2434 | DESCRIPTION |
| 2435 | Return the size of the compression header of SEC in ABFD. |
| 2436 | |
| 2437 | RETURNS |
| 2438 | Return the size of the compression header in bytes. |
| 2439 | */ |
| 2440 | |
| 2441 | int |
| 2442 | bfd_get_compression_header_size (bfd *abfd, asection *sec) |
| 2443 | { |
| 2444 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) |
| 2445 | { |
| 2446 | if (sec == NULL) |
| 2447 | { |
| 2448 | if (!(abfd->flags & BFD_COMPRESS_GABI)) |
| 2449 | return 0; |
| 2450 | } |
| 2451 | else if (!(elf_section_flags (sec) & SHF_COMPRESSED)) |
| 2452 | return 0; |
| 2453 | |
| 2454 | if (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS32) |
| 2455 | return sizeof (Elf32_External_Chdr); |
| 2456 | else |
| 2457 | return sizeof (Elf64_External_Chdr); |
| 2458 | } |
| 2459 | |
| 2460 | return 0; |
| 2461 | } |
| 2462 | |
| 2463 | /* |
| 2464 | FUNCTION |
| 2465 | bfd_convert_section_size |
| 2466 | |
| 2467 | SYNOPSIS |
| 2468 | bfd_size_type bfd_convert_section_size |
| 2469 | (bfd *ibfd, asection *isec, bfd *obfd, bfd_size_type size); |
| 2470 | |
| 2471 | DESCRIPTION |
| 2472 | Convert the size @var{size} of the section @var{isec} in input |
| 2473 | BFD @var{ibfd} to the section size in output BFD @var{obfd}. |
| 2474 | */ |
| 2475 | |
| 2476 | bfd_size_type |
| 2477 | bfd_convert_section_size (bfd *ibfd, sec_ptr isec, bfd *obfd, |
| 2478 | bfd_size_type size) |
| 2479 | { |
| 2480 | bfd_size_type hdr_size; |
| 2481 | |
| 2482 | /* Do nothing if either input or output aren't ELF. */ |
| 2483 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| 2484 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| 2485 | return size; |
| 2486 | |
| 2487 | /* Do nothing if ELF classes of input and output are the same. */ |
| 2488 | if (get_elf_backend_data (ibfd)->s->elfclass |
| 2489 | == get_elf_backend_data (obfd)->s->elfclass) |
| 2490 | return size; |
| 2491 | |
| 2492 | /* Convert GNU property size. */ |
| 2493 | if (CONST_STRNEQ (isec->name, NOTE_GNU_PROPERTY_SECTION_NAME)) |
| 2494 | return _bfd_elf_convert_gnu_property_size (ibfd, obfd); |
| 2495 | |
| 2496 | /* Do nothing if input file will be decompressed. */ |
| 2497 | if ((ibfd->flags & BFD_DECOMPRESS)) |
| 2498 | return size; |
| 2499 | |
| 2500 | /* Do nothing if the input section isn't a SHF_COMPRESSED section. */ |
| 2501 | hdr_size = bfd_get_compression_header_size (ibfd, isec); |
| 2502 | if (hdr_size == 0) |
| 2503 | return size; |
| 2504 | |
| 2505 | /* Adjust the size of the output SHF_COMPRESSED section. */ |
| 2506 | if (hdr_size == sizeof (Elf32_External_Chdr)) |
| 2507 | return (size - sizeof (Elf32_External_Chdr) |
| 2508 | + sizeof (Elf64_External_Chdr)); |
| 2509 | else |
| 2510 | return (size - sizeof (Elf64_External_Chdr) |
| 2511 | + sizeof (Elf32_External_Chdr)); |
| 2512 | } |
| 2513 | |
| 2514 | /* |
| 2515 | FUNCTION |
| 2516 | bfd_convert_section_contents |
| 2517 | |
| 2518 | SYNOPSIS |
| 2519 | bfd_boolean bfd_convert_section_contents |
| 2520 | (bfd *ibfd, asection *isec, bfd *obfd, |
| 2521 | bfd_byte **ptr, bfd_size_type *ptr_size); |
| 2522 | |
| 2523 | DESCRIPTION |
| 2524 | Convert the contents, stored in @var{*ptr}, of the section |
| 2525 | @var{isec} in input BFD @var{ibfd} to output BFD @var{obfd} |
| 2526 | if needed. The original buffer pointed to by @var{*ptr} may |
| 2527 | be freed and @var{*ptr} is returned with memory malloc'd by this |
| 2528 | function, and the new size written to @var{ptr_size}. |
| 2529 | */ |
| 2530 | |
| 2531 | bfd_boolean |
| 2532 | bfd_convert_section_contents (bfd *ibfd, sec_ptr isec, bfd *obfd, |
| 2533 | bfd_byte **ptr, bfd_size_type *ptr_size) |
| 2534 | { |
| 2535 | bfd_byte *contents; |
| 2536 | bfd_size_type ihdr_size, ohdr_size, size; |
| 2537 | Elf_Internal_Chdr chdr; |
| 2538 | bfd_boolean use_memmove; |
| 2539 | |
| 2540 | /* Do nothing if either input or output aren't ELF. */ |
| 2541 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| 2542 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| 2543 | return TRUE; |
| 2544 | |
| 2545 | /* Do nothing if ELF classes of input and output are the same. */ |
| 2546 | if (get_elf_backend_data (ibfd)->s->elfclass |
| 2547 | == get_elf_backend_data (obfd)->s->elfclass) |
| 2548 | return TRUE; |
| 2549 | |
| 2550 | /* Convert GNU properties. */ |
| 2551 | if (CONST_STRNEQ (isec->name, NOTE_GNU_PROPERTY_SECTION_NAME)) |
| 2552 | return _bfd_elf_convert_gnu_properties (ibfd, isec, obfd, ptr, |
| 2553 | ptr_size); |
| 2554 | |
| 2555 | /* Do nothing if input file will be decompressed. */ |
| 2556 | if ((ibfd->flags & BFD_DECOMPRESS)) |
| 2557 | return TRUE; |
| 2558 | |
| 2559 | /* Do nothing if the input section isn't a SHF_COMPRESSED section. */ |
| 2560 | ihdr_size = bfd_get_compression_header_size (ibfd, isec); |
| 2561 | if (ihdr_size == 0) |
| 2562 | return TRUE; |
| 2563 | |
| 2564 | contents = *ptr; |
| 2565 | |
| 2566 | /* Convert the contents of the input SHF_COMPRESSED section to |
| 2567 | output. Get the input compression header and the size of the |
| 2568 | output compression header. */ |
| 2569 | if (ihdr_size == sizeof (Elf32_External_Chdr)) |
| 2570 | { |
| 2571 | Elf32_External_Chdr *echdr = (Elf32_External_Chdr *) contents; |
| 2572 | chdr.ch_type = bfd_get_32 (ibfd, &echdr->ch_type); |
| 2573 | chdr.ch_size = bfd_get_32 (ibfd, &echdr->ch_size); |
| 2574 | chdr.ch_addralign = bfd_get_32 (ibfd, &echdr->ch_addralign); |
| 2575 | |
| 2576 | ohdr_size = sizeof (Elf64_External_Chdr); |
| 2577 | |
| 2578 | use_memmove = FALSE; |
| 2579 | } |
| 2580 | else |
| 2581 | { |
| 2582 | Elf64_External_Chdr *echdr = (Elf64_External_Chdr *) contents; |
| 2583 | chdr.ch_type = bfd_get_32 (ibfd, &echdr->ch_type); |
| 2584 | chdr.ch_size = bfd_get_64 (ibfd, &echdr->ch_size); |
| 2585 | chdr.ch_addralign = bfd_get_64 (ibfd, &echdr->ch_addralign); |
| 2586 | |
| 2587 | ohdr_size = sizeof (Elf32_External_Chdr); |
| 2588 | use_memmove = TRUE; |
| 2589 | } |
| 2590 | |
| 2591 | size = bfd_get_section_size (isec) - ihdr_size + ohdr_size; |
| 2592 | if (!use_memmove) |
| 2593 | { |
| 2594 | contents = (bfd_byte *) bfd_malloc (size); |
| 2595 | if (contents == NULL) |
| 2596 | return FALSE; |
| 2597 | } |
| 2598 | |
| 2599 | /* Write out the output compression header. */ |
| 2600 | if (ohdr_size == sizeof (Elf32_External_Chdr)) |
| 2601 | { |
| 2602 | Elf32_External_Chdr *echdr = (Elf32_External_Chdr *) contents; |
| 2603 | bfd_put_32 (obfd, ELFCOMPRESS_ZLIB, &echdr->ch_type); |
| 2604 | bfd_put_32 (obfd, chdr.ch_size, &echdr->ch_size); |
| 2605 | bfd_put_32 (obfd, chdr.ch_addralign, &echdr->ch_addralign); |
| 2606 | } |
| 2607 | else |
| 2608 | { |
| 2609 | Elf64_External_Chdr *echdr = (Elf64_External_Chdr *) contents; |
| 2610 | bfd_put_32 (obfd, ELFCOMPRESS_ZLIB, &echdr->ch_type); |
| 2611 | bfd_put_32 (obfd, 0, &echdr->ch_reserved); |
| 2612 | bfd_put_64 (obfd, chdr.ch_size, &echdr->ch_size); |
| 2613 | bfd_put_64 (obfd, chdr.ch_addralign, &echdr->ch_addralign); |
| 2614 | } |
| 2615 | |
| 2616 | /* Copy the compressed contents. */ |
| 2617 | if (use_memmove) |
| 2618 | memmove (contents + ohdr_size, *ptr + ihdr_size, size - ohdr_size); |
| 2619 | else |
| 2620 | { |
| 2621 | memcpy (contents + ohdr_size, *ptr + ihdr_size, size - ohdr_size); |
| 2622 | free (*ptr); |
| 2623 | *ptr = contents; |
| 2624 | } |
| 2625 | |
| 2626 | *ptr_size = size; |
| 2627 | return TRUE; |
| 2628 | } |