1/* objcopy.c -- copy object file from input to output, optionally massaging it. 2 Copyright (C) 1991-2020 Free Software Foundation, Inc. 3 4 This file is part of GNU Binutils. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 19 02110-1301, USA. */ 20 21#include "sysdep.h" 22#include "bfd.h" 23#include "progress.h" 24#include "getopt.h" 25#include "libiberty.h" 26#include "bucomm.h" 27#include "budbg.h" 28#include "filenames.h" 29#include "fnmatch.h" 30#include "elf-bfd.h" 31#include "coff/internal.h" 32#include "libcoff.h" 33#include "safe-ctype.h" 34 35/* FIXME: See bfd/peXXigen.c for why we include an architecture specific 36 header in generic PE code. */ 37#include "coff/i386.h" 38#include "coff/pe.h" 39 40static bfd_vma pe_file_alignment = (bfd_vma) -1; 41static bfd_vma pe_heap_commit = (bfd_vma) -1; 42static bfd_vma pe_heap_reserve = (bfd_vma) -1; 43static bfd_vma pe_image_base = (bfd_vma) -1; 44static bfd_vma pe_section_alignment = (bfd_vma) -1; 45static bfd_vma pe_stack_commit = (bfd_vma) -1; 46static bfd_vma pe_stack_reserve = (bfd_vma) -1; 47static short pe_subsystem = -1; 48static short pe_major_subsystem_version = -1; 49static short pe_minor_subsystem_version = -1; 50 51struct is_specified_symbol_predicate_data 52{ 53 const char * name; 54 bfd_boolean found; 55}; 56 57/* A node includes symbol name mapping to support redefine_sym. */ 58struct redefine_node 59{ 60 char *source; 61 char *target; 62}; 63 64struct addsym_node 65{ 66 struct addsym_node *next; 67 char * symdef; 68 long symval; 69 flagword flags; 70 char * section; 71 const char * othersym; 72}; 73 74typedef struct section_rename 75{ 76 const char * old_name; 77 const char * new_name; 78 flagword flags; 79 struct section_rename * next; 80} 81section_rename; 82 83/* List of sections to be renamed. */ 84static section_rename *section_rename_list; 85 86static asymbol **isympp = NULL; /* Input symbols. */ 87static asymbol **osympp = NULL; /* Output symbols that survive stripping. */ 88 89/* If `copy_byte' >= 0, copy 'copy_width' byte(s) of every `interleave' bytes. */ 90static int copy_byte = -1; 91static int interleave = 0; /* Initialised to 4 in copy_main(). */ 92static int copy_width = 1; 93 94static bfd_boolean verbose; /* Print file and target names. */ 95static bfd_boolean preserve_dates; /* Preserve input file timestamp. */ 96static int deterministic = -1; /* Enable deterministic archives. */ 97static int status = 0; /* Exit status. */ 98 99static bfd_boolean merge_notes = FALSE; /* Merge note sections. */ 100 101typedef struct merged_note_section 102{ 103 asection * sec; /* The section that is being merged. */ 104 bfd_byte * contents;/* New contents of the section. */ 105 bfd_size_type size; /* New size of the section. */ 106 struct merged_note_section * next; /* Link to next merged note section. */ 107} merged_note_section; 108 109enum strip_action 110{ 111 STRIP_UNDEF, 112 STRIP_NONE, /* Don't strip. */ 113 STRIP_DEBUG, /* Strip all debugger symbols. */ 114 STRIP_UNNEEDED, /* Strip unnecessary symbols. */ 115 STRIP_NONDEBUG, /* Strip everything but debug info. */ 116 STRIP_DWO, /* Strip all DWO info. */ 117 STRIP_NONDWO, /* Strip everything but DWO info. */ 118 STRIP_ALL /* Strip all symbols. */ 119}; 120 121/* Which symbols to remove. */ 122static enum strip_action strip_symbols = STRIP_UNDEF; 123 124enum locals_action 125{ 126 LOCALS_UNDEF, 127 LOCALS_START_L, /* Discard locals starting with L. */ 128 LOCALS_ALL /* Discard all locals. */ 129}; 130 131/* Which local symbols to remove. Overrides STRIP_ALL. */ 132static enum locals_action discard_locals; 133 134/* Structure used to hold lists of sections and actions to take. */ 135struct section_list 136{ 137 struct section_list * next; /* Next section to change. */ 138 const char * pattern; /* Section name pattern. */ 139 bfd_boolean used; /* Whether this entry was used. */ 140 141 unsigned int context; /* What to do with matching sections. */ 142 /* Flag bits used in the context field. 143 COPY and REMOVE are mutually exlusive. SET and ALTER are mutually exclusive. */ 144#define SECTION_CONTEXT_REMOVE (1 << 0) /* Remove this section. */ 145#define SECTION_CONTEXT_COPY (1 << 1) /* Copy this section, delete all non-copied section. */ 146#define SECTION_CONTEXT_KEEP (1 << 2) /* Keep this section. */ 147#define SECTION_CONTEXT_SET_VMA (1 << 3) /* Set the sections' VMA address. */ 148#define SECTION_CONTEXT_ALTER_VMA (1 << 4) /* Increment or decrement the section's VMA address. */ 149#define SECTION_CONTEXT_SET_LMA (1 << 5) /* Set the sections' LMA address. */ 150#define SECTION_CONTEXT_ALTER_LMA (1 << 6) /* Increment or decrement the section's LMA address. */ 151#define SECTION_CONTEXT_SET_FLAGS (1 << 7) /* Set the section's flags. */ 152#define SECTION_CONTEXT_REMOVE_RELOCS (1 << 8) /* Remove relocations for this section. */ 153#define SECTION_CONTEXT_SET_ALIGNMENT (1 << 9) /* Set alignment for section. */ 154 155 bfd_vma vma_val; /* Amount to change by or set to. */ 156 bfd_vma lma_val; /* Amount to change by or set to. */ 157 flagword flags; /* What to set the section flags to. */ 158 unsigned int alignment; /* Alignment of output section. */ 159}; 160 161static struct section_list *change_sections; 162 163/* TRUE if some sections are to be removed. */ 164static bfd_boolean sections_removed; 165 166/* TRUE if only some sections are to be copied. */ 167static bfd_boolean sections_copied; 168 169/* Changes to the start address. */ 170static bfd_vma change_start = 0; 171static bfd_boolean set_start_set = FALSE; 172static bfd_vma set_start; 173 174/* Changes to section addresses. */ 175static bfd_vma change_section_address = 0; 176 177/* Filling gaps between sections. */ 178static bfd_boolean gap_fill_set = FALSE; 179static bfd_byte gap_fill = 0; 180 181/* Pad to a given address. */ 182static bfd_boolean pad_to_set = FALSE; 183static bfd_vma pad_to; 184 185/* Use alternative machine code? */ 186static unsigned long use_alt_mach_code = 0; 187 188/* Output BFD flags user wants to set or clear */ 189static flagword bfd_flags_to_set; 190static flagword bfd_flags_to_clear; 191 192/* List of sections to add. */ 193struct section_add 194{ 195 /* Next section to add. */ 196 struct section_add *next; 197 /* Name of section to add. */ 198 const char *name; 199 /* Name of file holding section contents. */ 200 const char *filename; 201 /* Size of file. */ 202 size_t size; 203 /* Contents of file. */ 204 bfd_byte *contents; 205 /* BFD section, after it has been added. */ 206 asection *section; 207}; 208 209/* List of sections to add to the output BFD. */ 210static struct section_add *add_sections; 211 212/* List of sections to update in the output BFD. */ 213static struct section_add *update_sections; 214 215/* List of sections to dump from the output BFD. */ 216static struct section_add *dump_sections; 217 218/* If non-NULL the argument to --add-gnu-debuglink. 219 This should be the filename to store in the .gnu_debuglink section. */ 220static const char * gnu_debuglink_filename = NULL; 221 222/* Whether to convert debugging information. */ 223static bfd_boolean convert_debugging = FALSE; 224 225/* Whether to compress/decompress DWARF debug sections. */ 226static enum 227{ 228 nothing = 0, 229 compress = 1 << 0, 230 compress_zlib = compress | 1 << 1, 231 compress_gnu_zlib = compress | 1 << 2, 232 compress_gabi_zlib = compress | 1 << 3, 233 decompress = 1 << 4 234} do_debug_sections = nothing; 235 236/* Whether to generate ELF common symbols with the STT_COMMON type. */ 237static enum bfd_link_elf_stt_common do_elf_stt_common = unchanged; 238 239/* Whether to change the leading character in symbol names. */ 240static bfd_boolean change_leading_char = FALSE; 241 242/* Whether to remove the leading character from global symbol names. */ 243static bfd_boolean remove_leading_char = FALSE; 244 245/* Whether to permit wildcard in symbol comparison. */ 246static bfd_boolean wildcard = FALSE; 247 248/* True if --localize-hidden is in effect. */ 249static bfd_boolean localize_hidden = FALSE; 250 251/* List of symbols to strip, keep, localize, keep-global, weaken, 252 or redefine. */ 253static htab_t strip_specific_htab = NULL; 254static htab_t strip_unneeded_htab = NULL; 255static htab_t keep_specific_htab = NULL; 256static htab_t localize_specific_htab = NULL; 257static htab_t globalize_specific_htab = NULL; 258static htab_t keepglobal_specific_htab = NULL; 259static htab_t weaken_specific_htab = NULL; 260static htab_t redefine_specific_htab = NULL; 261static htab_t redefine_specific_reverse_htab = NULL; 262static struct addsym_node *add_sym_list = NULL, **add_sym_tail = &add_sym_list; 263static int add_symbols = 0; 264 265static char *strip_specific_buffer = NULL; 266static char *strip_unneeded_buffer = NULL; 267static char *keep_specific_buffer = NULL; 268static char *localize_specific_buffer = NULL; 269static char *globalize_specific_buffer = NULL; 270static char *keepglobal_specific_buffer = NULL; 271static char *weaken_specific_buffer = NULL; 272 273/* If this is TRUE, we weaken global symbols (set BSF_WEAK). */ 274static bfd_boolean weaken = FALSE; 275 276/* If this is TRUE, we retain BSF_FILE symbols. */ 277static bfd_boolean keep_file_symbols = FALSE; 278 279/* Prefix symbols/sections. */ 280static char *prefix_symbols_string = 0; 281static char *prefix_sections_string = 0; 282static char *prefix_alloc_sections_string = 0; 283 284/* True if --extract-symbol was passed on the command line. */ 285static bfd_boolean extract_symbol = FALSE; 286 287/* If `reverse_bytes' is nonzero, then reverse the order of every chunk 288 of <reverse_bytes> bytes within each output section. */ 289static int reverse_bytes = 0; 290 291/* For Coff objects, we may want to allow or disallow long section names, 292 or preserve them where found in the inputs. Debug info relies on them. */ 293enum long_section_name_handling 294{ 295 DISABLE, 296 ENABLE, 297 KEEP 298}; 299 300/* The default long section handling mode is to preserve them. 301 This is also the only behaviour for 'strip'. */ 302static enum long_section_name_handling long_section_names = KEEP; 303 304/* 150 isn't special; it's just an arbitrary non-ASCII char value. */ 305enum command_line_switch 306{ 307 OPTION_ADD_SECTION=150, 308 OPTION_ADD_GNU_DEBUGLINK, 309 OPTION_ADD_SYMBOL, 310 OPTION_ALT_MACH_CODE, 311 OPTION_CHANGE_ADDRESSES, 312 OPTION_CHANGE_LEADING_CHAR, 313 OPTION_CHANGE_SECTION_ADDRESS, 314 OPTION_CHANGE_SECTION_LMA, 315 OPTION_CHANGE_SECTION_VMA, 316 OPTION_CHANGE_START, 317 OPTION_CHANGE_WARNINGS, 318 OPTION_COMPRESS_DEBUG_SECTIONS, 319 OPTION_DEBUGGING, 320 OPTION_DECOMPRESS_DEBUG_SECTIONS, 321 OPTION_DUMP_SECTION, 322 OPTION_ELF_STT_COMMON, 323 OPTION_EXTRACT_DWO, 324 OPTION_EXTRACT_SYMBOL, 325 OPTION_FILE_ALIGNMENT, 326 OPTION_FORMATS_INFO, 327 OPTION_GAP_FILL, 328 OPTION_GLOBALIZE_SYMBOL, 329 OPTION_GLOBALIZE_SYMBOLS, 330 OPTION_HEAP, 331 OPTION_IMAGE_BASE, 332 OPTION_IMPURE, 333 OPTION_INTERLEAVE_WIDTH, 334 OPTION_KEEPGLOBAL_SYMBOLS, 335 OPTION_KEEP_FILE_SYMBOLS, 336 OPTION_KEEP_SECTION, 337 OPTION_KEEP_SYMBOLS, 338 OPTION_LOCALIZE_HIDDEN, 339 OPTION_LOCALIZE_SYMBOLS, 340 OPTION_LONG_SECTION_NAMES, 341 OPTION_MERGE_NOTES, 342 OPTION_NO_MERGE_NOTES, 343 OPTION_NO_CHANGE_WARNINGS, 344 OPTION_ONLY_KEEP_DEBUG, 345 OPTION_PAD_TO, 346 OPTION_PREFIX_ALLOC_SECTIONS, 347 OPTION_PREFIX_SECTIONS, 348 OPTION_PREFIX_SYMBOLS, 349 OPTION_PURE, 350 OPTION_READONLY_TEXT, 351 OPTION_REDEFINE_SYM, 352 OPTION_REDEFINE_SYMS, 353 OPTION_REMOVE_LEADING_CHAR, 354 OPTION_REMOVE_RELOCS, 355 OPTION_RENAME_SECTION, 356 OPTION_REVERSE_BYTES, 357 OPTION_PE_SECTION_ALIGNMENT, 358 OPTION_SET_SECTION_FLAGS, 359 OPTION_SET_SECTION_ALIGNMENT, 360 OPTION_SET_START, 361 OPTION_SREC_FORCES3, 362 OPTION_SREC_LEN, 363 OPTION_STACK, 364 OPTION_STRIP_DWO, 365 OPTION_STRIP_SYMBOLS, 366 OPTION_STRIP_UNNEEDED, 367 OPTION_STRIP_UNNEEDED_SYMBOL, 368 OPTION_STRIP_UNNEEDED_SYMBOLS, 369 OPTION_SUBSYSTEM, 370 OPTION_UPDATE_SECTION, 371 OPTION_VERILOG_DATA_WIDTH, 372 OPTION_WEAKEN, 373 OPTION_WEAKEN_SYMBOLS, 374 OPTION_WRITABLE_TEXT 375}; 376 377/* Options to handle if running as "strip". */ 378 379static struct option strip_options[] = 380{ 381 {"disable-deterministic-archives", no_argument, 0, 'U'}, 382 {"discard-all", no_argument, 0, 'x'}, 383 {"discard-locals", no_argument, 0, 'X'}, 384 {"enable-deterministic-archives", no_argument, 0, 'D'}, 385 {"format", required_argument, 0, 'F'}, /* Obsolete */ 386 {"help", no_argument, 0, 'h'}, 387 {"info", no_argument, 0, OPTION_FORMATS_INFO}, 388 {"input-format", required_argument, 0, 'I'}, /* Obsolete */ 389 {"input-target", required_argument, 0, 'I'}, 390 {"keep-file-symbols", no_argument, 0, OPTION_KEEP_FILE_SYMBOLS}, 391 {"keep-section", required_argument, 0, OPTION_KEEP_SECTION}, 392 {"keep-symbol", required_argument, 0, 'K'}, 393 {"merge-notes", no_argument, 0, 'M'}, 394 {"no-merge-notes", no_argument, 0, OPTION_NO_MERGE_NOTES}, 395 {"only-keep-debug", no_argument, 0, OPTION_ONLY_KEEP_DEBUG}, 396 {"output-file", required_argument, 0, 'o'}, 397 {"output-format", required_argument, 0, 'O'}, /* Obsolete */ 398 {"output-target", required_argument, 0, 'O'}, 399 {"preserve-dates", no_argument, 0, 'p'}, 400 {"remove-section", required_argument, 0, 'R'}, 401 {"remove-relocations", required_argument, 0, OPTION_REMOVE_RELOCS}, 402 {"strip-all", no_argument, 0, 's'}, 403 {"strip-debug", no_argument, 0, 'S'}, 404 {"strip-dwo", no_argument, 0, OPTION_STRIP_DWO}, 405 {"strip-symbol", required_argument, 0, 'N'}, 406 {"strip-unneeded", no_argument, 0, OPTION_STRIP_UNNEEDED}, 407 {"target", required_argument, 0, 'F'}, 408 {"verbose", no_argument, 0, 'v'}, 409 {"version", no_argument, 0, 'V'}, 410 {"wildcard", no_argument, 0, 'w'}, 411 {0, no_argument, 0, 0} 412}; 413 414/* Options to handle if running as "objcopy". */ 415 416static struct option copy_options[] = 417{ 418 {"add-gnu-debuglink", required_argument, 0, OPTION_ADD_GNU_DEBUGLINK}, 419 {"add-section", required_argument, 0, OPTION_ADD_SECTION}, 420 {"add-symbol", required_argument, 0, OPTION_ADD_SYMBOL}, 421 {"adjust-section-vma", required_argument, 0, OPTION_CHANGE_SECTION_ADDRESS}, 422 {"adjust-start", required_argument, 0, OPTION_CHANGE_START}, 423 {"adjust-vma", required_argument, 0, OPTION_CHANGE_ADDRESSES}, 424 {"adjust-warnings", no_argument, 0, OPTION_CHANGE_WARNINGS}, 425 {"alt-machine-code", required_argument, 0, OPTION_ALT_MACH_CODE}, 426 {"binary-architecture", required_argument, 0, 'B'}, 427 {"byte", required_argument, 0, 'b'}, 428 {"change-addresses", required_argument, 0, OPTION_CHANGE_ADDRESSES}, 429 {"change-leading-char", no_argument, 0, OPTION_CHANGE_LEADING_CHAR}, 430 {"change-section-address", required_argument, 0, OPTION_CHANGE_SECTION_ADDRESS}, 431 {"change-section-lma", required_argument, 0, OPTION_CHANGE_SECTION_LMA}, 432 {"change-section-vma", required_argument, 0, OPTION_CHANGE_SECTION_VMA}, 433 {"change-start", required_argument, 0, OPTION_CHANGE_START}, 434 {"change-warnings", no_argument, 0, OPTION_CHANGE_WARNINGS}, 435 {"compress-debug-sections", optional_argument, 0, OPTION_COMPRESS_DEBUG_SECTIONS}, 436 {"debugging", no_argument, 0, OPTION_DEBUGGING}, 437 {"decompress-debug-sections", no_argument, 0, OPTION_DECOMPRESS_DEBUG_SECTIONS}, 438 {"disable-deterministic-archives", no_argument, 0, 'U'}, 439 {"discard-all", no_argument, 0, 'x'}, 440 {"discard-locals", no_argument, 0, 'X'}, 441 {"dump-section", required_argument, 0, OPTION_DUMP_SECTION}, 442 {"elf-stt-common", required_argument, 0, OPTION_ELF_STT_COMMON}, 443 {"enable-deterministic-archives", no_argument, 0, 'D'}, 444 {"extract-dwo", no_argument, 0, OPTION_EXTRACT_DWO}, 445 {"extract-symbol", no_argument, 0, OPTION_EXTRACT_SYMBOL}, 446 {"file-alignment", required_argument, 0, OPTION_FILE_ALIGNMENT}, 447 {"format", required_argument, 0, 'F'}, /* Obsolete */ 448 {"gap-fill", required_argument, 0, OPTION_GAP_FILL}, 449 {"globalize-symbol", required_argument, 0, OPTION_GLOBALIZE_SYMBOL}, 450 {"globalize-symbols", required_argument, 0, OPTION_GLOBALIZE_SYMBOLS}, 451 {"heap", required_argument, 0, OPTION_HEAP}, 452 {"help", no_argument, 0, 'h'}, 453 {"image-base", required_argument, 0 , OPTION_IMAGE_BASE}, 454 {"impure", no_argument, 0, OPTION_IMPURE}, 455 {"info", no_argument, 0, OPTION_FORMATS_INFO}, 456 {"input-format", required_argument, 0, 'I'}, /* Obsolete */ 457 {"input-target", required_argument, 0, 'I'}, 458 {"interleave", optional_argument, 0, 'i'}, 459 {"interleave-width", required_argument, 0, OPTION_INTERLEAVE_WIDTH}, 460 {"keep-file-symbols", no_argument, 0, OPTION_KEEP_FILE_SYMBOLS}, 461 {"keep-global-symbol", required_argument, 0, 'G'}, 462 {"keep-global-symbols", required_argument, 0, OPTION_KEEPGLOBAL_SYMBOLS}, 463 {"keep-section", required_argument, 0, OPTION_KEEP_SECTION}, 464 {"keep-symbol", required_argument, 0, 'K'}, 465 {"keep-symbols", required_argument, 0, OPTION_KEEP_SYMBOLS}, 466 {"localize-hidden", no_argument, 0, OPTION_LOCALIZE_HIDDEN}, 467 {"localize-symbol", required_argument, 0, 'L'}, 468 {"localize-symbols", required_argument, 0, OPTION_LOCALIZE_SYMBOLS}, 469 {"long-section-names", required_argument, 0, OPTION_LONG_SECTION_NAMES}, 470 {"merge-notes", no_argument, 0, 'M'}, 471 {"no-merge-notes", no_argument, 0, OPTION_NO_MERGE_NOTES}, 472 {"no-adjust-warnings", no_argument, 0, OPTION_NO_CHANGE_WARNINGS}, 473 {"no-change-warnings", no_argument, 0, OPTION_NO_CHANGE_WARNINGS}, 474 {"only-keep-debug", no_argument, 0, OPTION_ONLY_KEEP_DEBUG}, 475 {"only-section", required_argument, 0, 'j'}, 476 {"output-format", required_argument, 0, 'O'}, /* Obsolete */ 477 {"output-target", required_argument, 0, 'O'}, 478 {"pad-to", required_argument, 0, OPTION_PAD_TO}, 479 {"prefix-alloc-sections", required_argument, 0, OPTION_PREFIX_ALLOC_SECTIONS}, 480 {"prefix-sections", required_argument, 0, OPTION_PREFIX_SECTIONS}, 481 {"prefix-symbols", required_argument, 0, OPTION_PREFIX_SYMBOLS}, 482 {"preserve-dates", no_argument, 0, 'p'}, 483 {"pure", no_argument, 0, OPTION_PURE}, 484 {"readonly-text", no_argument, 0, OPTION_READONLY_TEXT}, 485 {"redefine-sym", required_argument, 0, OPTION_REDEFINE_SYM}, 486 {"redefine-syms", required_argument, 0, OPTION_REDEFINE_SYMS}, 487 {"remove-leading-char", no_argument, 0, OPTION_REMOVE_LEADING_CHAR}, 488 {"remove-section", required_argument, 0, 'R'}, 489 {"remove-relocations", required_argument, 0, OPTION_REMOVE_RELOCS}, 490 {"rename-section", required_argument, 0, OPTION_RENAME_SECTION}, 491 {"reverse-bytes", required_argument, 0, OPTION_REVERSE_BYTES}, 492 {"section-alignment", required_argument, 0, OPTION_PE_SECTION_ALIGNMENT}, 493 {"set-section-flags", required_argument, 0, OPTION_SET_SECTION_FLAGS}, 494 {"set-section-alignment", required_argument, 0, OPTION_SET_SECTION_ALIGNMENT}, 495 {"set-start", required_argument, 0, OPTION_SET_START}, 496 {"srec-forceS3", no_argument, 0, OPTION_SREC_FORCES3}, 497 {"srec-len", required_argument, 0, OPTION_SREC_LEN}, 498 {"stack", required_argument, 0, OPTION_STACK}, 499 {"strip-all", no_argument, 0, 'S'}, 500 {"strip-debug", no_argument, 0, 'g'}, 501 {"strip-dwo", no_argument, 0, OPTION_STRIP_DWO}, 502 {"strip-symbol", required_argument, 0, 'N'}, 503 {"strip-symbols", required_argument, 0, OPTION_STRIP_SYMBOLS}, 504 {"strip-unneeded", no_argument, 0, OPTION_STRIP_UNNEEDED}, 505 {"strip-unneeded-symbol", required_argument, 0, OPTION_STRIP_UNNEEDED_SYMBOL}, 506 {"strip-unneeded-symbols", required_argument, 0, OPTION_STRIP_UNNEEDED_SYMBOLS}, 507 {"subsystem", required_argument, 0, OPTION_SUBSYSTEM}, 508 {"target", required_argument, 0, 'F'}, 509 {"update-section", required_argument, 0, OPTION_UPDATE_SECTION}, 510 {"verbose", no_argument, 0, 'v'}, 511 {"verilog-data-width", required_argument, 0, OPTION_VERILOG_DATA_WIDTH}, 512 {"version", no_argument, 0, 'V'}, 513 {"weaken", no_argument, 0, OPTION_WEAKEN}, 514 {"weaken-symbol", required_argument, 0, 'W'}, 515 {"weaken-symbols", required_argument, 0, OPTION_WEAKEN_SYMBOLS}, 516 {"wildcard", no_argument, 0, 'w'}, 517 {"writable-text", no_argument, 0, OPTION_WRITABLE_TEXT}, 518 {0, no_argument, 0, 0} 519}; 520 521/* IMPORTS */ 522extern char *program_name; 523 524/* This flag distinguishes between strip and objcopy: 525 1 means this is 'strip'; 0 means this is 'objcopy'. 526 -1 means if we should use argv[0] to decide. */ 527extern int is_strip; 528 529/* The maximum length of an S record. This variable is defined in srec.c 530 and can be modified by the --srec-len parameter. */ 531extern unsigned int _bfd_srec_len; 532 533/* Restrict the generation of Srecords to type S3 only. 534 This variable is defined in bfd/srec.c and can be toggled 535 on by the --srec-forceS3 command line switch. */ 536extern bfd_boolean _bfd_srec_forceS3; 537 538/* Width of data in bytes for verilog output. 539 This variable is declared in bfd/verilog.c and can be modified by 540 the --verilog-data-width parameter. */ 541extern unsigned int VerilogDataWidth; 542 543/* Forward declarations. */ 544static void setup_section (bfd *, asection *, void *); 545static void setup_bfd_headers (bfd *, bfd *); 546static void copy_relocations_in_section (bfd *, asection *, void *); 547static void copy_section (bfd *, asection *, void *); 548static void get_sections (bfd *, asection *, void *); 549static int compare_section_lma (const void *, const void *); 550static void mark_symbols_used_in_relocations (bfd *, asection *, void *); 551static bfd_boolean write_debugging_info (bfd *, void *, long *, asymbol ***); 552static const char *lookup_sym_redefinition (const char *); 553static const char *find_section_rename (const char *, flagword *); 554 555ATTRIBUTE_NORETURN static void 556copy_usage (FILE *stream, int exit_status) 557{ 558 fprintf (stream, _("Usage: %s [option(s)] in-file [out-file]\n"), program_name); 559 fprintf (stream, _(" Copies a binary file, possibly transforming it in the process\n")); 560 fprintf (stream, _(" The options are:\n")); 561 fprintf (stream, _("\ 562 -I --input-target <bfdname> Assume input file is in format <bfdname>\n\ 563 -O --output-target <bfdname> Create an output file in format <bfdname>\n\ 564 -B --binary-architecture <arch> Set output arch, when input is arch-less\n\ 565 -F --target <bfdname> Set both input and output format to <bfdname>\n\ 566 --debugging Convert debugging information, if possible\n\ 567 -p --preserve-dates Copy modified/access timestamps to the output\n")); 568 if (DEFAULT_AR_DETERMINISTIC) 569 fprintf (stream, _("\ 570 -D --enable-deterministic-archives\n\ 571 Produce deterministic output when stripping archives (default)\n\ 572 -U --disable-deterministic-archives\n\ 573 Disable -D behavior\n")); 574 else 575 fprintf (stream, _("\ 576 -D --enable-deterministic-archives\n\ 577 Produce deterministic output when stripping archives\n\ 578 -U --disable-deterministic-archives\n\ 579 Disable -D behavior (default)\n")); 580 fprintf (stream, _("\ 581 -j --only-section <name> Only copy section <name> into the output\n\ 582 --add-gnu-debuglink=<file> Add section .gnu_debuglink linking to <file>\n\ 583 -R --remove-section <name> Remove section <name> from the output\n\ 584 --remove-relocations <name> Remove relocations from section <name>\n\ 585 -S --strip-all Remove all symbol and relocation information\n\ 586 -g --strip-debug Remove all debugging symbols & sections\n\ 587 --strip-dwo Remove all DWO sections\n\ 588 --strip-unneeded Remove all symbols not needed by relocations\n\ 589 -N --strip-symbol <name> Do not copy symbol <name>\n\ 590 --strip-unneeded-symbol <name>\n\ 591 Do not copy symbol <name> unless needed by\n\ 592 relocations\n\ 593 --only-keep-debug Strip everything but the debug information\n\ 594 --extract-dwo Copy only DWO sections\n\ 595 --extract-symbol Remove section contents but keep symbols\n\ 596 --keep-section <name> Do not strip section <name>\n\ 597 -K --keep-symbol <name> Do not strip symbol <name>\n\ 598 --keep-file-symbols Do not strip file symbol(s)\n\ 599 --localize-hidden Turn all ELF hidden symbols into locals\n\ 600 -L --localize-symbol <name> Force symbol <name> to be marked as a local\n\ 601 --globalize-symbol <name> Force symbol <name> to be marked as a global\n\ 602 -G --keep-global-symbol <name> Localize all symbols except <name>\n\ 603 -W --weaken-symbol <name> Force symbol <name> to be marked as a weak\n\ 604 --weaken Force all global symbols to be marked as weak\n\ 605 -w --wildcard Permit wildcard in symbol comparison\n\ 606 -x --discard-all Remove all non-global symbols\n\ 607 -X --discard-locals Remove any compiler-generated symbols\n\ 608 -i --interleave[=<number>] Only copy N out of every <number> bytes\n\ 609 --interleave-width <number> Set N for --interleave\n\ 610 -b --byte <num> Select byte <num> in every interleaved block\n\ 611 --gap-fill <val> Fill gaps between sections with <val>\n\ 612 --pad-to <addr> Pad the last section up to address <addr>\n\ 613 --set-start <addr> Set the start address to <addr>\n\ 614 {--change-start|--adjust-start} <incr>\n\ 615 Add <incr> to the start address\n\ 616 {--change-addresses|--adjust-vma} <incr>\n\ 617 Add <incr> to LMA, VMA and start addresses\n\ 618 {--change-section-address|--adjust-section-vma} <name>{=|+|-}<val>\n\ 619 Change LMA and VMA of section <name> by <val>\n\ 620 --change-section-lma <name>{=|+|-}<val>\n\ 621 Change the LMA of section <name> by <val>\n\ 622 --change-section-vma <name>{=|+|-}<val>\n\ 623 Change the VMA of section <name> by <val>\n\ 624 {--[no-]change-warnings|--[no-]adjust-warnings}\n\ 625 Warn if a named section does not exist\n\ 626 --set-section-flags <name>=<flags>\n\ 627 Set section <name>'s properties to <flags>\n\ 628 --set-section-alignment <name>=<align>\n\ 629 Set section <name>'s alignment to <align> bytes\n\ 630 --add-section <name>=<file> Add section <name> found in <file> to output\n\ 631 --update-section <name>=<file>\n\ 632 Update contents of section <name> with\n\ 633 contents found in <file>\n\ 634 --dump-section <name>=<file> Dump the contents of section <name> into <file>\n\ 635 --rename-section <old>=<new>[,<flags>] Rename section <old> to <new>\n\ 636 --long-section-names {enable|disable|keep}\n\ 637 Handle long section names in Coff objects.\n\ 638 --change-leading-char Force output format's leading character style\n\ 639 --remove-leading-char Remove leading character from global symbols\n\ 640 --reverse-bytes=<num> Reverse <num> bytes at a time, in output sections with content\n\ 641 --redefine-sym <old>=<new> Redefine symbol name <old> to <new>\n\ 642 --redefine-syms <file> --redefine-sym for all symbol pairs \n\ 643 listed in <file>\n\ 644 --srec-len <number> Restrict the length of generated Srecords\n\ 645 --srec-forceS3 Restrict the type of generated Srecords to S3\n\ 646 --strip-symbols <file> -N for all symbols listed in <file>\n\ 647 --strip-unneeded-symbols <file>\n\ 648 --strip-unneeded-symbol for all symbols listed\n\ 649 in <file>\n\ 650 --keep-symbols <file> -K for all symbols listed in <file>\n\ 651 --localize-symbols <file> -L for all symbols listed in <file>\n\ 652 --globalize-symbols <file> --globalize-symbol for all in <file>\n\ 653 --keep-global-symbols <file> -G for all symbols listed in <file>\n\ 654 --weaken-symbols <file> -W for all symbols listed in <file>\n\ 655 --add-symbol <name>=[<section>:]<value>[,<flags>] Add a symbol\n\ 656 --alt-machine-code <index> Use the target's <index>'th alternative machine\n\ 657 --writable-text Mark the output text as writable\n\ 658 --readonly-text Make the output text write protected\n\ 659 --pure Mark the output file as demand paged\n\ 660 --impure Mark the output file as impure\n\ 661 --prefix-symbols <prefix> Add <prefix> to start of every symbol name\n\ 662 --prefix-sections <prefix> Add <prefix> to start of every section name\n\ 663 --prefix-alloc-sections <prefix>\n\ 664 Add <prefix> to start of every allocatable\n\ 665 section name\n\ 666 --file-alignment <num> Set PE file alignment to <num>\n\ 667 --heap <reserve>[,<commit>] Set PE reserve/commit heap to <reserve>/\n\ 668 <commit>\n\ 669 --image-base <address> Set PE image base to <address>\n\ 670 --section-alignment <num> Set PE section alignment to <num>\n\ 671 --stack <reserve>[,<commit>] Set PE reserve/commit stack to <reserve>/\n\ 672 <commit>\n\ 673 --subsystem <name>[:<version>]\n\ 674 Set PE subsystem to <name> [& <version>]\n\ 675 --compress-debug-sections[={none|zlib|zlib-gnu|zlib-gabi}]\n\ 676 Compress DWARF debug sections using zlib\n\ 677 --decompress-debug-sections Decompress DWARF debug sections using zlib\n\ 678 --elf-stt-common=[yes|no] Generate ELF common symbols with STT_COMMON\n\ 679 type\n\ 680 --verilog-data-width <number> Specifies data width, in bytes, for verilog output\n\ 681 -M --merge-notes Remove redundant entries in note sections\n\ 682 --no-merge-notes Do not attempt to remove redundant notes (default)\n\ 683 -v --verbose List all object files modified\n\ 684 @<file> Read options from <file>\n\ 685 -V --version Display this program's version number\n\ 686 -h --help Display this output\n\ 687 --info List object formats & architectures supported\n\ 688")); 689 list_supported_targets (program_name, stream); 690 if (REPORT_BUGS_TO[0] && exit_status == 0) 691 fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO); 692 exit (exit_status); 693} 694 695ATTRIBUTE_NORETURN static void 696strip_usage (FILE *stream, int exit_status) 697{ 698 fprintf (stream, _("Usage: %s <option(s)> in-file(s)\n"), program_name); 699 fprintf (stream, _(" Removes symbols and sections from files\n")); 700 fprintf (stream, _(" The options are:\n")); 701 fprintf (stream, _("\ 702 -I --input-target=<bfdname> Assume input file is in format <bfdname>\n\ 703 -O --output-target=<bfdname> Create an output file in format <bfdname>\n\ 704 -F --target=<bfdname> Set both input and output format to <bfdname>\n\ 705 -p --preserve-dates Copy modified/access timestamps to the output\n\ 706")); 707 if (DEFAULT_AR_DETERMINISTIC) 708 fprintf (stream, _("\ 709 -D --enable-deterministic-archives\n\ 710 Produce deterministic output when stripping archives (default)\n\ 711 -U --disable-deterministic-archives\n\ 712 Disable -D behavior\n")); 713 else 714 fprintf (stream, _("\ 715 -D --enable-deterministic-archives\n\ 716 Produce deterministic output when stripping archives\n\ 717 -U --disable-deterministic-archives\n\ 718 Disable -D behavior (default)\n")); 719 fprintf (stream, _("\ 720 -R --remove-section=<name> Also remove section <name> from the output\n\ 721 --remove-relocations <name> Remove relocations from section <name>\n\ 722 -s --strip-all Remove all symbol and relocation information\n\ 723 -g -S -d --strip-debug Remove all debugging symbols & sections\n\ 724 --strip-dwo Remove all DWO sections\n\ 725 --strip-unneeded Remove all symbols not needed by relocations\n\ 726 --only-keep-debug Strip everything but the debug information\n\ 727 -M --merge-notes Remove redundant entries in note sections (default)\n\ 728 --no-merge-notes Do not attempt to remove redundant notes\n\ 729 -N --strip-symbol=<name> Do not copy symbol <name>\n\ 730 --keep-section=<name> Do not strip section <name>\n\ 731 -K --keep-symbol=<name> Do not strip symbol <name>\n\ 732 --keep-file-symbols Do not strip file symbol(s)\n\ 733 -w --wildcard Permit wildcard in symbol comparison\n\ 734 -x --discard-all Remove all non-global symbols\n\ 735 -X --discard-locals Remove any compiler-generated symbols\n\ 736 -v --verbose List all object files modified\n\ 737 -V --version Display this program's version number\n\ 738 -h --help Display this output\n\ 739 --info List object formats & architectures supported\n\ 740 -o <file> Place stripped output into <file>\n\ 741")); 742 743 list_supported_targets (program_name, stream); 744 if (REPORT_BUGS_TO[0] && exit_status == 0) 745 fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO); 746 exit (exit_status); 747} 748 749/* Parse section flags into a flagword, with a fatal error if the 750 string can't be parsed. */ 751 752static flagword 753parse_flags (const char *s) 754{ 755 flagword ret; 756 const char *snext; 757 int len; 758 759 ret = SEC_NO_FLAGS; 760 761 do 762 { 763 snext = strchr (s, ','); 764 if (snext == NULL) 765 len = strlen (s); 766 else 767 { 768 len = snext - s; 769 ++snext; 770 } 771 772 if (0) ; 773#define PARSE_FLAG(fname,fval) \ 774 else if (strncasecmp (fname, s, len) == 0) ret |= fval 775 PARSE_FLAG ("alloc", SEC_ALLOC); 776 PARSE_FLAG ("load", SEC_LOAD); 777 PARSE_FLAG ("noload", SEC_NEVER_LOAD); 778 PARSE_FLAG ("readonly", SEC_READONLY); 779 PARSE_FLAG ("debug", SEC_DEBUGGING); 780 PARSE_FLAG ("code", SEC_CODE); 781 PARSE_FLAG ("data", SEC_DATA); 782 PARSE_FLAG ("rom", SEC_ROM); 783 PARSE_FLAG ("exclude", SEC_EXCLUDE); 784 PARSE_FLAG ("share", SEC_COFF_SHARED); 785 PARSE_FLAG ("contents", SEC_HAS_CONTENTS); 786 PARSE_FLAG ("merge", SEC_MERGE); 787 PARSE_FLAG ("strings", SEC_STRINGS); 788#undef PARSE_FLAG 789 else 790 { 791 char *copy; 792 793 copy = (char *) xmalloc (len + 1); 794 strncpy (copy, s, len); 795 copy[len] = '\0'; 796 non_fatal (_("unrecognized section flag `%s'"), copy); 797 fatal (_("supported flags: %s"), 798 "alloc, load, noload, readonly, debug, code, data, rom, exclude, share, contents, merge, strings"); 799 } 800 801 s = snext; 802 } 803 while (s != NULL); 804 805 return ret; 806} 807 808/* Parse symbol flags into a flagword, with a fatal error if the 809 string can't be parsed. */ 810 811static flagword 812parse_symflags (const char *s, const char **other) 813{ 814 flagword ret; 815 const char *snext; 816 size_t len; 817 818 ret = BSF_NO_FLAGS; 819 820 do 821 { 822 snext = strchr (s, ','); 823 if (snext == NULL) 824 len = strlen (s); 825 else 826 { 827 len = snext - s; 828 ++snext; 829 } 830 831#define PARSE_FLAG(fname, fval) \ 832 else if (len == sizeof fname - 1 \ 833 && strncasecmp (fname, s, len) == 0) \ 834 ret |= fval 835 836#define PARSE_OTHER(fname, fval) \ 837 else if (len >= sizeof fname \ 838 && strncasecmp (fname, s, sizeof fname - 1) == 0) \ 839 fval = xstrndup (s + sizeof fname - 1, len - sizeof fname + 1) 840 841 if (0) ; 842 PARSE_FLAG ("local", BSF_LOCAL); 843 PARSE_FLAG ("global", BSF_GLOBAL); 844 PARSE_FLAG ("export", BSF_EXPORT); 845 PARSE_FLAG ("debug", BSF_DEBUGGING); 846 PARSE_FLAG ("function", BSF_FUNCTION); 847 PARSE_FLAG ("weak", BSF_WEAK); 848 PARSE_FLAG ("section", BSF_SECTION_SYM); 849 PARSE_FLAG ("constructor", BSF_CONSTRUCTOR); 850 PARSE_FLAG ("warning", BSF_WARNING); 851 PARSE_FLAG ("indirect", BSF_INDIRECT); 852 PARSE_FLAG ("file", BSF_FILE); 853 PARSE_FLAG ("object", BSF_OBJECT); 854 PARSE_FLAG ("synthetic", BSF_SYNTHETIC); 855 PARSE_FLAG ("indirect-function", BSF_GNU_INDIRECT_FUNCTION | BSF_FUNCTION); 856 PARSE_FLAG ("unique-object", BSF_GNU_UNIQUE | BSF_OBJECT); 857 PARSE_OTHER ("before=", *other); 858 859#undef PARSE_FLAG 860#undef PARSE_OTHER 861 else 862 { 863 char *copy; 864 865 copy = (char *) xmalloc (len + 1); 866 strncpy (copy, s, len); 867 copy[len] = '\0'; 868 non_fatal (_("unrecognized symbol flag `%s'"), copy); 869 fatal (_("supported flags: %s"), 870 "local, global, export, debug, function, weak, section, " 871 "constructor, warning, indirect, file, object, synthetic, " 872 "indirect-function, unique-object, before=<othersym>"); 873 } 874 875 s = snext; 876 } 877 while (s != NULL); 878 879 return ret; 880} 881 882/* Find and optionally add an entry in the change_sections list. 883 884 We need to be careful in how we match section names because of the support 885 for wildcard characters. For example suppose that the user has invoked 886 objcopy like this: 887 888 --set-section-flags .debug_*=debug 889 --set-section-flags .debug_str=readonly,debug 890 --change-section-address .debug_*ranges=0x1000 891 892 With the idea that all debug sections will receive the DEBUG flag, the 893 .debug_str section will also receive the READONLY flag and the 894 .debug_ranges and .debug_aranges sections will have their address set to 895 0x1000. (This may not make much sense, but it is just an example). 896 897 When adding the section name patterns to the section list we need to make 898 sure that previous entries do not match with the new entry, unless the 899 match is exact. (In which case we assume that the user is overriding 900 the previous entry with the new context). 901 902 When matching real section names to the section list we make use of the 903 wildcard characters, but we must do so in context. Eg if we are setting 904 section addresses then we match for .debug_ranges but not for .debug_info. 905 906 Finally, if ADD is false and we do find a match, we mark the section list 907 entry as used. */ 908 909static struct section_list * 910find_section_list (const char *name, bfd_boolean add, unsigned int context) 911{ 912 struct section_list *p, *match = NULL; 913 914 /* assert ((context & ((1 << 7) - 1)) != 0); */ 915 916 for (p = change_sections; p != NULL; p = p->next) 917 { 918 if (add) 919 { 920 if (strcmp (p->pattern, name) == 0) 921 { 922 /* Check for context conflicts. */ 923 if (((p->context & SECTION_CONTEXT_REMOVE) 924 && (context & SECTION_CONTEXT_COPY)) 925 || ((context & SECTION_CONTEXT_REMOVE) 926 && (p->context & SECTION_CONTEXT_COPY))) 927 fatal (_("error: %s both copied and removed"), name); 928 929 if (((p->context & SECTION_CONTEXT_SET_VMA) 930 && (context & SECTION_CONTEXT_ALTER_VMA)) 931 || ((context & SECTION_CONTEXT_SET_VMA) 932 && (context & SECTION_CONTEXT_ALTER_VMA))) 933 fatal (_("error: %s both sets and alters VMA"), name); 934 935 if (((p->context & SECTION_CONTEXT_SET_LMA) 936 && (context & SECTION_CONTEXT_ALTER_LMA)) 937 || ((context & SECTION_CONTEXT_SET_LMA) 938 && (context & SECTION_CONTEXT_ALTER_LMA))) 939 fatal (_("error: %s both sets and alters LMA"), name); 940 941 /* Extend the context. */ 942 p->context |= context; 943 return p; 944 } 945 } 946 /* If we are not adding a new name/pattern then 947 only check for a match if the context applies. */ 948 else if (p->context & context) 949 { 950 /* We could check for the presence of wildchar characters 951 first and choose between calling strcmp and fnmatch, 952 but is that really worth it ? */ 953 if (p->pattern [0] == '!') 954 { 955 if (fnmatch (p->pattern + 1, name, 0) == 0) 956 { 957 p->used = TRUE; 958 return NULL; 959 } 960 } 961 else 962 { 963 if (fnmatch (p->pattern, name, 0) == 0) 964 { 965 if (match == NULL) 966 match = p; 967 } 968 } 969 } 970 } 971 972 if (! add) 973 { 974 if (match != NULL) 975 match->used = TRUE; 976 return match; 977 } 978 979 p = (struct section_list *) xmalloc (sizeof (struct section_list)); 980 p->pattern = name; 981 p->used = FALSE; 982 p->context = context; 983 p->vma_val = 0; 984 p->lma_val = 0; 985 p->flags = 0; 986 p->alignment = 0; 987 p->next = change_sections; 988 change_sections = p; 989 990 return p; 991} 992 993/* S1 is the entry node already in the table, S2 is the key node. */ 994 995static int 996eq_string_redefnode (const void *s1, const void *s2) 997{ 998 struct redefine_node *node1 = (struct redefine_node *) s1; 999 struct redefine_node *node2 = (struct redefine_node *) s2; 1000 return !strcmp ((const char *) node1->source, (const char *) node2->source); 1001} 1002 1003/* P is redefine node. Hash value is generated from its "source" filed. */ 1004 1005static hashval_t 1006htab_hash_redefnode (const void *p) 1007{ 1008 struct redefine_node *redefnode = (struct redefine_node *) p; 1009 return htab_hash_string (redefnode->source); 1010} 1011 1012/* Create hashtab used for redefine node. */ 1013 1014static htab_t 1015create_symbol2redef_htab (void) 1016{ 1017 return htab_create_alloc (16, htab_hash_redefnode, eq_string_redefnode, NULL, 1018 xcalloc, free); 1019} 1020 1021/* There is htab_hash_string but no htab_eq_string. Makes sense. */ 1022 1023static int 1024eq_string (const void *s1, const void *s2) 1025{ 1026 return strcmp ((const char *) s1, (const char *) s2) == 0; 1027} 1028 1029static htab_t 1030create_symbol_htab (void) 1031{ 1032 return htab_create_alloc (16, htab_hash_string, eq_string, NULL, xcalloc, free); 1033} 1034 1035static void 1036create_symbol_htabs (void) 1037{ 1038 strip_specific_htab = create_symbol_htab (); 1039 strip_unneeded_htab = create_symbol_htab (); 1040 keep_specific_htab = create_symbol_htab (); 1041 localize_specific_htab = create_symbol_htab (); 1042 globalize_specific_htab = create_symbol_htab (); 1043 keepglobal_specific_htab = create_symbol_htab (); 1044 weaken_specific_htab = create_symbol_htab (); 1045 redefine_specific_htab = create_symbol2redef_htab (); 1046 /* As there is no bidirectional hash table in libiberty, need a reverse table 1047 to check duplicated target string. */ 1048 redefine_specific_reverse_htab = create_symbol_htab (); 1049} 1050 1051/* Add a symbol to strip_specific_list. */ 1052 1053static void 1054add_specific_symbol (const char *name, htab_t htab) 1055{ 1056 *htab_find_slot (htab, name, INSERT) = (char *) name; 1057} 1058 1059/* Like add_specific_symbol, but the element type is void *. */ 1060 1061static void 1062add_specific_symbol_node (const void *node, htab_t htab) 1063{ 1064 *htab_find_slot (htab, node, INSERT) = (void *) node; 1065} 1066 1067/* Add symbols listed in `filename' to strip_specific_list. */ 1068 1069#define IS_WHITESPACE(c) ((c) == ' ' || (c) == '\t') 1070#define IS_LINE_TERMINATOR(c) ((c) == '\n' || (c) == '\r' || (c) == '\0') 1071 1072static void 1073add_specific_symbols (const char *filename, htab_t htab, char **buffer_p) 1074{ 1075 off_t size; 1076 FILE * f; 1077 char * line; 1078 char * buffer; 1079 unsigned int line_count; 1080 1081 size = get_file_size (filename); 1082 if (size == 0) 1083 { 1084 status = 1; 1085 return; 1086 } 1087 1088 buffer = (char *) xmalloc (size + 2); 1089 f = fopen (filename, FOPEN_RT); 1090 if (f == NULL) 1091 fatal (_("cannot open '%s': %s"), filename, strerror (errno)); 1092 1093 if (fread (buffer, 1, size, f) == 0 || ferror (f)) 1094 fatal (_("%s: fread failed"), filename); 1095 1096 fclose (f); 1097 buffer [size] = '\n'; 1098 buffer [size + 1] = '\0'; 1099 1100 line_count = 1; 1101 1102 for (line = buffer; * line != '\0'; line ++) 1103 { 1104 char * eol; 1105 char * name; 1106 char * name_end; 1107 int finished = FALSE; 1108 1109 for (eol = line;; eol ++) 1110 { 1111 switch (* eol) 1112 { 1113 case '\n': 1114 * eol = '\0'; 1115 /* Cope with \n\r. */ 1116 if (eol[1] == '\r') 1117 ++ eol; 1118 finished = TRUE; 1119 break; 1120 1121 case '\r': 1122 * eol = '\0'; 1123 /* Cope with \r\n. */ 1124 if (eol[1] == '\n') 1125 ++ eol; 1126 finished = TRUE; 1127 break; 1128 1129 case 0: 1130 finished = TRUE; 1131 break; 1132 1133 case '#': 1134 /* Line comment, Terminate the line here, in case a 1135 name is present and then allow the rest of the 1136 loop to find the real end of the line. */ 1137 * eol = '\0'; 1138 break; 1139 1140 default: 1141 break; 1142 } 1143 1144 if (finished) 1145 break; 1146 } 1147 1148 /* A name may now exist somewhere between 'line' and 'eol'. 1149 Strip off leading whitespace and trailing whitespace, 1150 then add it to the list. */ 1151 for (name = line; IS_WHITESPACE (* name); name ++) 1152 ; 1153 for (name_end = name; 1154 (! IS_WHITESPACE (* name_end)) 1155 && (! IS_LINE_TERMINATOR (* name_end)); 1156 name_end ++) 1157 ; 1158 1159 if (! IS_LINE_TERMINATOR (* name_end)) 1160 { 1161 char * extra; 1162 1163 for (extra = name_end + 1; IS_WHITESPACE (* extra); extra ++) 1164 ; 1165 1166 if (! IS_LINE_TERMINATOR (* extra)) 1167 non_fatal (_("%s:%d: Ignoring rubbish found on this line"), 1168 filename, line_count); 1169 } 1170 1171 * name_end = '\0'; 1172 1173 if (name_end > name) 1174 add_specific_symbol (name, htab); 1175 1176 /* Advance line pointer to end of line. The 'eol ++' in the for 1177 loop above will then advance us to the start of the next line. */ 1178 line = eol; 1179 line_count ++; 1180 } 1181 1182 /* Do not free the buffer. Parts of it will have been referenced 1183 in the calls to add_specific_symbol. */ 1184 *buffer_p = buffer; 1185} 1186 1187/* See whether a symbol should be stripped or kept 1188 based on strip_specific_list and keep_symbols. */ 1189 1190static int 1191is_specified_symbol_predicate (void **slot, void *data) 1192{ 1193 struct is_specified_symbol_predicate_data *d = 1194 (struct is_specified_symbol_predicate_data *) data; 1195 const char *slot_name = (char *) *slot; 1196 1197 if (*slot_name != '!') 1198 { 1199 if (! fnmatch (slot_name, d->name, 0)) 1200 { 1201 d->found = TRUE; 1202 /* Continue traversal, there might be a non-match rule. */ 1203 return 1; 1204 } 1205 } 1206 else 1207 { 1208 if (! fnmatch (slot_name + 1, d->name, 0)) 1209 { 1210 d->found = FALSE; 1211 /* Stop traversal. */ 1212 return 0; 1213 } 1214 } 1215 1216 /* Continue traversal. */ 1217 return 1; 1218} 1219 1220static bfd_boolean 1221is_specified_symbol (const char *name, htab_t htab) 1222{ 1223 if (wildcard) 1224 { 1225 struct is_specified_symbol_predicate_data data; 1226 1227 data.name = name; 1228 data.found = FALSE; 1229 1230 htab_traverse (htab, is_specified_symbol_predicate, &data); 1231 1232 return data.found; 1233 } 1234 1235 return htab_find (htab, name) != NULL; 1236} 1237 1238/* Return a pointer to the symbol used as a signature for GROUP. */ 1239 1240static asymbol * 1241group_signature (asection *group) 1242{ 1243 bfd *abfd = group->owner; 1244 Elf_Internal_Shdr *ghdr; 1245 1246 /* PR 20089: An earlier error may have prevented us from loading the symbol table. */ 1247 if (isympp == NULL) 1248 return NULL; 1249 1250 if (bfd_get_flavour (abfd) != bfd_target_elf_flavour) 1251 return NULL; 1252 1253 ghdr = &elf_section_data (group)->this_hdr; 1254 if (ghdr->sh_link == elf_onesymtab (abfd)) 1255 { 1256 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 1257 Elf_Internal_Shdr *symhdr = &elf_symtab_hdr (abfd); 1258 1259 if (ghdr->sh_info > 0 1260 && ghdr->sh_info < symhdr->sh_size / bed->s->sizeof_sym) 1261 return isympp[ghdr->sh_info - 1]; 1262 } 1263 return NULL; 1264} 1265 1266/* Return TRUE if the section is a DWO section. */ 1267 1268static bfd_boolean 1269is_dwo_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec) 1270{ 1271 const char *name = bfd_section_name (sec); 1272 int len = strlen (name); 1273 1274 return strncmp (name + len - 4, ".dwo", 4) == 0; 1275} 1276 1277/* Return TRUE if section SEC is in the update list. */ 1278 1279static bfd_boolean 1280is_update_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec) 1281{ 1282 if (update_sections != NULL) 1283 { 1284 struct section_add *pupdate; 1285 1286 for (pupdate = update_sections; 1287 pupdate != NULL; 1288 pupdate = pupdate->next) 1289 { 1290 if (strcmp (sec->name, pupdate->name) == 0) 1291 return TRUE; 1292 } 1293 } 1294 1295 return FALSE; 1296} 1297 1298static bfd_boolean 1299is_mergeable_note_section (bfd * abfd, asection * sec) 1300{ 1301 if (merge_notes 1302 && bfd_get_flavour (abfd) == bfd_target_elf_flavour 1303 && elf_section_data (sec)->this_hdr.sh_type == SHT_NOTE 1304 /* FIXME: We currently only support merging GNU_BUILD_NOTEs. 1305 We should add support for more note types. */ 1306 && ((elf_section_data (sec)->this_hdr.sh_flags & SHF_GNU_BUILD_NOTE) != 0 1307 /* Old versions of GAS (prior to 2.27) could not set the section 1308 flags to OS-specific values, so we also accept sections that 1309 start with the expected name. */ 1310 || (CONST_STRNEQ (sec->name, GNU_BUILD_ATTRS_SECTION_NAME)))) 1311 return TRUE; 1312 1313 return FALSE; 1314} 1315 1316/* See if a non-group section is being removed. */ 1317 1318static bfd_boolean 1319is_strip_section_1 (bfd *abfd ATTRIBUTE_UNUSED, asection *sec) 1320{ 1321 if (find_section_list (bfd_section_name (sec), FALSE, SECTION_CONTEXT_KEEP) 1322 != NULL) 1323 return FALSE; 1324 1325 if (sections_removed || sections_copied) 1326 { 1327 struct section_list *p; 1328 struct section_list *q; 1329 1330 p = find_section_list (bfd_section_name (sec), FALSE, 1331 SECTION_CONTEXT_REMOVE); 1332 q = find_section_list (bfd_section_name (sec), FALSE, 1333 SECTION_CONTEXT_COPY); 1334 1335 if (p && q) 1336 fatal (_("error: section %s matches both remove and copy options"), 1337 bfd_section_name (sec)); 1338 if (p && is_update_section (abfd, sec)) 1339 fatal (_("error: section %s matches both update and remove options"), 1340 bfd_section_name (sec)); 1341 1342 if (p != NULL) 1343 return TRUE; 1344 if (sections_copied && q == NULL) 1345 return TRUE; 1346 } 1347 1348 if ((bfd_section_flags (sec) & SEC_DEBUGGING) != 0) 1349 { 1350 if (strip_symbols == STRIP_DEBUG 1351 || strip_symbols == STRIP_UNNEEDED 1352 || strip_symbols == STRIP_ALL 1353 || discard_locals == LOCALS_ALL 1354 || convert_debugging) 1355 { 1356 /* By default we don't want to strip .reloc section. 1357 This section has for pe-coff special meaning. See 1358 pe-dll.c file in ld, and peXXigen.c in bfd for details. */ 1359 if (strcmp (bfd_section_name (sec), ".reloc") != 0) 1360 return TRUE; 1361 } 1362 1363 if (strip_symbols == STRIP_DWO) 1364 return is_dwo_section (abfd, sec); 1365 1366 if (strip_symbols == STRIP_NONDEBUG) 1367 return FALSE; 1368 } 1369 1370 if (strip_symbols == STRIP_NONDWO) 1371 return !is_dwo_section (abfd, sec); 1372 1373 return FALSE; 1374} 1375 1376/* See if a section is being removed. */ 1377 1378static bfd_boolean 1379is_strip_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec) 1380{ 1381 if (is_strip_section_1 (abfd, sec)) 1382 return TRUE; 1383 1384 if ((bfd_section_flags (sec) & SEC_GROUP) != 0) 1385 { 1386 asymbol *gsym; 1387 const char *gname; 1388 asection *elt, *first; 1389 1390 gsym = group_signature (sec); 1391 /* Strip groups without a valid signature. */ 1392 if (gsym == NULL) 1393 return TRUE; 1394 1395 /* PR binutils/3181 1396 If we are going to strip the group signature symbol, then 1397 strip the group section too. */ 1398 gname = gsym->name; 1399 if ((strip_symbols == STRIP_ALL 1400 && !is_specified_symbol (gname, keep_specific_htab)) 1401 || is_specified_symbol (gname, strip_specific_htab)) 1402 return TRUE; 1403 1404 /* Remove the group section if all members are removed. */ 1405 first = elt = elf_next_in_group (sec); 1406 while (elt != NULL) 1407 { 1408 if (!is_strip_section_1 (abfd, elt)) 1409 return FALSE; 1410 elt = elf_next_in_group (elt); 1411 if (elt == first) 1412 break; 1413 } 1414 1415 return TRUE; 1416 } 1417 1418 return FALSE; 1419} 1420 1421static bfd_boolean 1422is_nondebug_keep_contents_section (bfd *ibfd, asection *isection) 1423{ 1424 /* Always keep ELF note sections. */ 1425 if (bfd_get_flavour (ibfd) == bfd_target_elf_flavour) 1426 return elf_section_type (isection) == SHT_NOTE; 1427 1428 /* Always keep the .buildid section for PE/COFF. 1429 1430 Strictly, this should be written "always keep the section storing the debug 1431 directory", but that may be the .text section for objects produced by some 1432 tools, which it is not sensible to keep. */ 1433 if (bfd_get_flavour (ibfd) == bfd_target_coff_flavour) 1434 return strcmp (bfd_section_name (isection), ".buildid") == 0; 1435 1436 return FALSE; 1437} 1438 1439/* Return true if SYM is a hidden symbol. */ 1440 1441static bfd_boolean 1442is_hidden_symbol (asymbol *sym) 1443{ 1444 elf_symbol_type *elf_sym; 1445 1446 elf_sym = elf_symbol_from (sym->the_bfd, sym); 1447 if (elf_sym != NULL) 1448 switch (ELF_ST_VISIBILITY (elf_sym->internal_elf_sym.st_other)) 1449 { 1450 case STV_HIDDEN: 1451 case STV_INTERNAL: 1452 return TRUE; 1453 } 1454 return FALSE; 1455} 1456 1457/* Empty name is hopefully never a valid symbol name. */ 1458static const char * empty_name = ""; 1459 1460static bfd_boolean 1461need_sym_before (struct addsym_node **node, const char *sym) 1462{ 1463 int count; 1464 struct addsym_node *ptr = add_sym_list; 1465 1466 /* 'othersym' symbols are at the front of the list. */ 1467 for (count = 0; count < add_symbols; count++) 1468 { 1469 if (!ptr->othersym) 1470 break; 1471 if (ptr->othersym == empty_name) 1472 continue; 1473 else if (strcmp (ptr->othersym, sym) == 0) 1474 { 1475 free ((char *) ptr->othersym); 1476 ptr->othersym = empty_name; 1477 *node = ptr; 1478 return TRUE; 1479 } 1480 ptr = ptr->next; 1481 } 1482 return FALSE; 1483} 1484 1485static asymbol * 1486create_new_symbol (struct addsym_node *ptr, bfd *obfd) 1487{ 1488 asymbol *sym = bfd_make_empty_symbol (obfd); 1489 1490 bfd_set_asymbol_name (sym, ptr->symdef); 1491 sym->value = ptr->symval; 1492 sym->flags = ptr->flags; 1493 if (ptr->section) 1494 { 1495 asection *sec = bfd_get_section_by_name (obfd, ptr->section); 1496 if (!sec) 1497 fatal (_("Section %s not found"), ptr->section); 1498 sym->section = sec; 1499 } 1500 else 1501 sym->section = bfd_abs_section_ptr; 1502 return sym; 1503} 1504 1505/* Choose which symbol entries to copy; put the result in OSYMS. 1506 We don't copy in place, because that confuses the relocs. 1507 Return the number of symbols to print. */ 1508 1509static unsigned int 1510filter_symbols (bfd *abfd, bfd *obfd, asymbol **osyms, 1511 asymbol **isyms, long symcount) 1512{ 1513 asymbol **from = isyms, **to = osyms; 1514 long src_count = 0, dst_count = 0; 1515 int relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; 1516 1517 for (; src_count < symcount; src_count++) 1518 { 1519 asymbol *sym = from[src_count]; 1520 flagword flags = sym->flags; 1521 char *name = (char *) bfd_asymbol_name (sym); 1522 bfd_boolean keep; 1523 bfd_boolean used_in_reloc = FALSE; 1524 bfd_boolean undefined; 1525 bfd_boolean rem_leading_char; 1526 bfd_boolean add_leading_char; 1527 1528 undefined = bfd_is_und_section (bfd_asymbol_section (sym)); 1529 1530 if (add_sym_list) 1531 { 1532 struct addsym_node *ptr; 1533 1534 if (need_sym_before (&ptr, name)) 1535 to[dst_count++] = create_new_symbol (ptr, obfd); 1536 } 1537 1538 if (htab_elements (redefine_specific_htab) || section_rename_list) 1539 { 1540 char *new_name; 1541 1542 new_name = (char *) lookup_sym_redefinition (name); 1543 if (new_name == name 1544 && (flags & BSF_SECTION_SYM) != 0) 1545 new_name = (char *) find_section_rename (name, NULL); 1546 bfd_set_asymbol_name (sym, new_name); 1547 name = new_name; 1548 } 1549 1550 /* Check if we will remove the current leading character. */ 1551 rem_leading_char = 1552 (name[0] != '\0' 1553 && name[0] == bfd_get_symbol_leading_char (abfd) 1554 && (change_leading_char 1555 || (remove_leading_char 1556 && ((flags & (BSF_GLOBAL | BSF_WEAK)) != 0 1557 || undefined 1558 || bfd_is_com_section (bfd_asymbol_section (sym)))))); 1559 1560 /* Check if we will add a new leading character. */ 1561 add_leading_char = 1562 change_leading_char 1563 && (bfd_get_symbol_leading_char (obfd) != '\0') 1564 && (bfd_get_symbol_leading_char (abfd) == '\0' 1565 || (name[0] == bfd_get_symbol_leading_char (abfd))); 1566 1567 /* Short circuit for change_leading_char if we can do it in-place. */ 1568 if (rem_leading_char && add_leading_char && !prefix_symbols_string) 1569 { 1570 name[0] = bfd_get_symbol_leading_char (obfd); 1571 bfd_set_asymbol_name (sym, name); 1572 rem_leading_char = FALSE; 1573 add_leading_char = FALSE; 1574 } 1575 1576 /* Remove leading char. */ 1577 if (rem_leading_char) 1578 bfd_set_asymbol_name (sym, ++name); 1579 1580 /* Add new leading char and/or prefix. */ 1581 if (add_leading_char || prefix_symbols_string) 1582 { 1583 char *n, *ptr; 1584 size_t len = strlen (name) + 1; 1585 1586 if (add_leading_char) 1587 len++; 1588 if (prefix_symbols_string) 1589 len += strlen (prefix_symbols_string); 1590 1591 ptr = n = (char *) xmalloc (len); 1592 if (add_leading_char) 1593 *ptr++ = bfd_get_symbol_leading_char (obfd); 1594 1595 if (prefix_symbols_string) 1596 { 1597 strcpy (ptr, prefix_symbols_string); 1598 ptr += strlen (prefix_symbols_string); 1599 } 1600 1601 strcpy (ptr, name); 1602 bfd_set_asymbol_name (sym, n); 1603 name = n; 1604 } 1605 1606 if (strip_symbols == STRIP_ALL) 1607 keep = FALSE; 1608 else if ((flags & BSF_KEEP) != 0 /* Used in relocation. */ 1609 || ((flags & BSF_SECTION_SYM) != 0 1610 && ((*bfd_asymbol_section (sym)->symbol_ptr_ptr)->flags 1611 & BSF_KEEP) != 0)) 1612 { 1613 keep = TRUE; 1614 used_in_reloc = TRUE; 1615 } 1616 else if (relocatable /* Relocatable file. */ 1617 && ((flags & (BSF_GLOBAL | BSF_WEAK)) != 0 1618 || bfd_is_com_section (bfd_asymbol_section (sym)))) 1619 keep = TRUE; 1620 else if (bfd_decode_symclass (sym) == 'I') 1621 /* Global symbols in $idata sections need to be retained 1622 even if relocatable is FALSE. External users of the 1623 library containing the $idata section may reference these 1624 symbols. */ 1625 keep = TRUE; 1626 else if ((flags & BSF_GLOBAL) != 0 /* Global symbol. */ 1627 || (flags & BSF_WEAK) != 0 1628 || undefined 1629 || bfd_is_com_section (bfd_asymbol_section (sym))) 1630 keep = strip_symbols != STRIP_UNNEEDED; 1631 else if ((flags & BSF_DEBUGGING) != 0) /* Debugging symbol. */ 1632 keep = (strip_symbols != STRIP_DEBUG 1633 && strip_symbols != STRIP_UNNEEDED 1634 && ! convert_debugging); 1635 else if (bfd_coff_get_comdat_section (abfd, bfd_asymbol_section (sym))) 1636 /* COMDAT sections store special information in local 1637 symbols, so we cannot risk stripping any of them. */ 1638 keep = TRUE; 1639 else /* Local symbol. */ 1640 keep = (strip_symbols != STRIP_UNNEEDED 1641 && (discard_locals != LOCALS_ALL 1642 && (discard_locals != LOCALS_START_L 1643 || ! bfd_is_local_label (abfd, sym)))); 1644 1645 if (keep && is_specified_symbol (name, strip_specific_htab)) 1646 { 1647 /* There are multiple ways to set 'keep' above, but if it 1648 was the relocatable symbol case, then that's an error. */ 1649 if (used_in_reloc) 1650 { 1651 non_fatal (_("not stripping symbol `%s' because it is named in a relocation"), name); 1652 status = 1; 1653 } 1654 else 1655 keep = FALSE; 1656 } 1657 1658 if (keep 1659 && !(flags & BSF_KEEP) 1660 && is_specified_symbol (name, strip_unneeded_htab)) 1661 keep = FALSE; 1662 1663 if (!keep 1664 && ((keep_file_symbols && (flags & BSF_FILE)) 1665 || is_specified_symbol (name, keep_specific_htab))) 1666 keep = TRUE; 1667 1668 if (keep && is_strip_section (abfd, bfd_asymbol_section (sym))) 1669 keep = FALSE; 1670 1671 if (keep) 1672 { 1673 if ((flags & BSF_GLOBAL) != 0 1674 && (weaken || is_specified_symbol (name, weaken_specific_htab))) 1675 { 1676 sym->flags &= ~ BSF_GLOBAL; 1677 sym->flags |= BSF_WEAK; 1678 } 1679 1680 if (!undefined 1681 && (flags & (BSF_GLOBAL | BSF_WEAK)) 1682 && (is_specified_symbol (name, localize_specific_htab) 1683 || (htab_elements (keepglobal_specific_htab) != 0 1684 && ! is_specified_symbol (name, keepglobal_specific_htab)) 1685 || (localize_hidden && is_hidden_symbol (sym)))) 1686 { 1687 sym->flags &= ~ (BSF_GLOBAL | BSF_WEAK); 1688 sym->flags |= BSF_LOCAL; 1689 } 1690 1691 if (!undefined 1692 && (flags & BSF_LOCAL) 1693 && is_specified_symbol (name, globalize_specific_htab)) 1694 { 1695 sym->flags &= ~ BSF_LOCAL; 1696 sym->flags |= BSF_GLOBAL; 1697 } 1698 1699 to[dst_count++] = sym; 1700 } 1701 } 1702 if (add_sym_list) 1703 { 1704 struct addsym_node *ptr = add_sym_list; 1705 1706 for (src_count = 0; src_count < add_symbols; src_count++) 1707 { 1708 if (ptr->othersym) 1709 { 1710 if (ptr->othersym != empty_name) 1711 fatal (_("'before=%s' not found"), ptr->othersym); 1712 } 1713 else 1714 to[dst_count++] = create_new_symbol (ptr, obfd); 1715 1716 ptr = ptr->next; 1717 } 1718 } 1719 1720 to[dst_count] = NULL; 1721 1722 return dst_count; 1723} 1724 1725/* Find the redefined name of symbol SOURCE. */ 1726 1727static const char * 1728lookup_sym_redefinition (const char *source) 1729{ 1730 struct redefine_node key_node = {(char *) source, NULL}; 1731 struct redefine_node *redef_node 1732 = (struct redefine_node *) htab_find (redefine_specific_htab, &key_node); 1733 1734 return redef_node == NULL ? source : redef_node->target; 1735} 1736 1737/* Insert a node into symbol redefine hash tabel. */ 1738 1739static void 1740add_redefine_and_check (const char *cause, const char *source, 1741 const char *target) 1742{ 1743 struct redefine_node *new_node 1744 = (struct redefine_node *) xmalloc (sizeof (struct redefine_node)); 1745 1746 new_node->source = strdup (source); 1747 new_node->target = strdup (target); 1748 1749 if (htab_find (redefine_specific_htab, new_node) != HTAB_EMPTY_ENTRY) 1750 fatal (_("%s: Multiple redefinition of symbol \"%s\""), 1751 cause, source); 1752 1753 if (htab_find (redefine_specific_reverse_htab, target) != HTAB_EMPTY_ENTRY) 1754 fatal (_("%s: Symbol \"%s\" is target of more than one redefinition"), 1755 cause, target); 1756 1757 /* Insert the NEW_NODE into hash table for quick search. */ 1758 add_specific_symbol_node (new_node, redefine_specific_htab); 1759 1760 /* Insert the target string into the reverse hash table, this is needed for 1761 duplicated target string check. */ 1762 add_specific_symbol (new_node->target, redefine_specific_reverse_htab); 1763 1764} 1765 1766/* Handle the --redefine-syms option. Read lines containing "old new" 1767 from the file, and add them to the symbol redefine list. */ 1768 1769static void 1770add_redefine_syms_file (const char *filename) 1771{ 1772 FILE *file; 1773 char *buf; 1774 size_t bufsize; 1775 size_t len; 1776 size_t outsym_off; 1777 int c, lineno; 1778 1779 file = fopen (filename, "r"); 1780 if (file == NULL) 1781 fatal (_("couldn't open symbol redefinition file %s (error: %s)"), 1782 filename, strerror (errno)); 1783 1784 bufsize = 100; 1785 buf = (char *) xmalloc (bufsize + 1 /* For the terminating NUL. */); 1786 1787 lineno = 1; 1788 c = getc (file); 1789 len = 0; 1790 outsym_off = 0; 1791 while (c != EOF) 1792 { 1793 /* Collect the input symbol name. */ 1794 while (! IS_WHITESPACE (c) && ! IS_LINE_TERMINATOR (c) && c != EOF) 1795 { 1796 if (c == '#') 1797 goto comment; 1798 buf[len++] = c; 1799 if (len >= bufsize) 1800 { 1801 bufsize *= 2; 1802 buf = (char *) xrealloc (buf, bufsize + 1); 1803 } 1804 c = getc (file); 1805 } 1806 buf[len++] = '\0'; 1807 if (c == EOF) 1808 break; 1809 1810 /* Eat white space between the symbol names. */ 1811 while (IS_WHITESPACE (c)) 1812 c = getc (file); 1813 if (c == '#' || IS_LINE_TERMINATOR (c)) 1814 goto comment; 1815 if (c == EOF) 1816 break; 1817 1818 /* Collect the output symbol name. */ 1819 outsym_off = len; 1820 while (! IS_WHITESPACE (c) && ! IS_LINE_TERMINATOR (c) && c != EOF) 1821 { 1822 if (c == '#') 1823 goto comment; 1824 buf[len++] = c; 1825 if (len >= bufsize) 1826 { 1827 bufsize *= 2; 1828 buf = (char *) xrealloc (buf, bufsize + 1); 1829 } 1830 c = getc (file); 1831 } 1832 buf[len++] = '\0'; 1833 if (c == EOF) 1834 break; 1835 1836 /* Eat white space at end of line. */ 1837 while (! IS_LINE_TERMINATOR(c) && c != EOF && IS_WHITESPACE (c)) 1838 c = getc (file); 1839 if (c == '#') 1840 goto comment; 1841 /* Handle \r\n. */ 1842 if ((c == '\r' && (c = getc (file)) == '\n') 1843 || c == '\n' || c == EOF) 1844 { 1845 end_of_line: 1846 /* Append the redefinition to the list. */ 1847 if (buf[0] != '\0') 1848 add_redefine_and_check (filename, &buf[0], &buf[outsym_off]); 1849 1850 lineno++; 1851 len = 0; 1852 outsym_off = 0; 1853 if (c == EOF) 1854 break; 1855 c = getc (file); 1856 continue; 1857 } 1858 else 1859 fatal (_("%s:%d: garbage found at end of line"), filename, lineno); 1860 comment: 1861 if (len != 0 && (outsym_off == 0 || outsym_off == len)) 1862 fatal (_("%s:%d: missing new symbol name"), filename, lineno); 1863 buf[len++] = '\0'; 1864 1865 /* Eat the rest of the line and finish it. */ 1866 while (c != '\n' && c != EOF) 1867 c = getc (file); 1868 goto end_of_line; 1869 } 1870 1871 if (len != 0) 1872 fatal (_("%s:%d: premature end of file"), filename, lineno); 1873 1874 free (buf); 1875 fclose (file); 1876} 1877 1878/* Copy unknown object file IBFD onto OBFD. 1879 Returns TRUE upon success, FALSE otherwise. */ 1880 1881static bfd_boolean 1882copy_unknown_object (bfd *ibfd, bfd *obfd) 1883{ 1884 char *cbuf; 1885 int tocopy; 1886 long ncopied; 1887 long size; 1888 struct stat buf; 1889 1890 if (bfd_stat_arch_elt (ibfd, &buf) != 0) 1891 { 1892 bfd_nonfatal_message (NULL, ibfd, NULL, NULL); 1893 return FALSE; 1894 } 1895 1896 size = buf.st_size; 1897 if (size < 0) 1898 { 1899 non_fatal (_("stat returns negative size for `%s'"), 1900 bfd_get_archive_filename (ibfd)); 1901 return FALSE; 1902 } 1903 1904 if (bfd_seek (ibfd, (file_ptr) 0, SEEK_SET) != 0) 1905 { 1906 bfd_nonfatal (bfd_get_archive_filename (ibfd)); 1907 return FALSE; 1908 } 1909 1910 if (verbose) 1911 printf (_("copy from `%s' [unknown] to `%s' [unknown]\n"), 1912 bfd_get_archive_filename (ibfd), bfd_get_filename (obfd)); 1913 1914 cbuf = (char *) xmalloc (BUFSIZE); 1915 ncopied = 0; 1916 while (ncopied < size) 1917 { 1918 tocopy = size - ncopied; 1919 if (tocopy > BUFSIZE) 1920 tocopy = BUFSIZE; 1921 1922 if (bfd_bread (cbuf, (bfd_size_type) tocopy, ibfd) 1923 != (bfd_size_type) tocopy) 1924 { 1925 bfd_nonfatal_message (NULL, ibfd, NULL, NULL); 1926 free (cbuf); 1927 return FALSE; 1928 } 1929 1930 if (bfd_bwrite (cbuf, (bfd_size_type) tocopy, obfd) 1931 != (bfd_size_type) tocopy) 1932 { 1933 bfd_nonfatal_message (NULL, obfd, NULL, NULL); 1934 free (cbuf); 1935 return FALSE; 1936 } 1937 1938 ncopied += tocopy; 1939 } 1940 1941 /* We should at least to be able to read it back when copying an 1942 unknown object in an archive. */ 1943 chmod (bfd_get_filename (obfd), buf.st_mode | S_IRUSR); 1944 free (cbuf); 1945 return TRUE; 1946} 1947 1948typedef struct objcopy_internal_note 1949{ 1950 Elf_Internal_Note note; 1951 unsigned long padded_namesz; 1952 bfd_vma start; 1953 bfd_vma end; 1954} objcopy_internal_note; 1955 1956#define DEBUG_MERGE 0 1957 1958#if DEBUG_MERGE 1959#define merge_debug(format, ...) fprintf (stderr, format, ## __VA_ARGS__) 1960#else 1961#define merge_debug(format, ...) 1962#endif 1963 1964/* Returns TRUE iff PNOTE1 overlaps or adjoins PNOTE2. */ 1965 1966static bfd_boolean 1967overlaps_or_adjoins (objcopy_internal_note * pnote1, 1968 objcopy_internal_note * pnote2) 1969{ 1970 if (pnote1->end < pnote2->start) 1971 /* FIXME: Alignment of 16 bytes taken from x86_64 binaries. 1972 Really we should extract the alignment of the section 1973 covered by the notes. */ 1974 return BFD_ALIGN (pnote1->end, 16) < pnote2->start; 1975 1976 if (pnote2->end < pnote2->start) 1977 return BFD_ALIGN (pnote2->end, 16) < pnote1->start; 1978 1979 if (pnote1->end < pnote2->end) 1980 return TRUE; 1981 1982 if (pnote2->end < pnote1->end) 1983 return TRUE; 1984 1985 return FALSE; 1986} 1987 1988/* Returns TRUE iff NEEDLE is fully contained by HAYSTACK. */ 1989 1990static bfd_boolean 1991contained_by (objcopy_internal_note * needle, 1992 objcopy_internal_note * haystack) 1993{ 1994 return needle->start >= haystack->start && needle->end <= haystack->end; 1995} 1996 1997static bfd_boolean 1998is_open_note (objcopy_internal_note * pnote) 1999{ 2000 return pnote->note.type == NT_GNU_BUILD_ATTRIBUTE_OPEN; 2001} 2002 2003static bfd_boolean 2004is_func_note (objcopy_internal_note * pnote) 2005{ 2006 return pnote->note.type == NT_GNU_BUILD_ATTRIBUTE_FUNC; 2007} 2008 2009static bfd_boolean 2010is_deleted_note (objcopy_internal_note * pnote) 2011{ 2012 return pnote->note.type == 0; 2013} 2014 2015static bfd_boolean 2016is_version_note (objcopy_internal_note * pnote) 2017{ 2018 return (pnote->note.namesz > 4 2019 && pnote->note.namedata[0] == 'G' 2020 && pnote->note.namedata[1] == 'A' 2021 && pnote->note.namedata[2] == '$' 2022 && pnote->note.namedata[3] == GNU_BUILD_ATTRIBUTE_VERSION); 2023} 2024 2025static bfd_boolean 2026is_64bit (bfd * abfd) 2027{ 2028 /* Should never happen, but let's be paranoid. */ 2029 if (bfd_get_flavour (abfd) != bfd_target_elf_flavour) 2030 return FALSE; 2031 2032 return elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64; 2033} 2034 2035/* This sorting function is used to get the notes into an order 2036 that makes merging easy. */ 2037 2038static int 2039compare_gnu_build_notes (const void * data1, const void * data2) 2040{ 2041 objcopy_internal_note * pnote1 = (objcopy_internal_note *) data1; 2042 objcopy_internal_note * pnote2 = (objcopy_internal_note *) data2; 2043 2044 /* Sort notes based upon the attribute they record. */ 2045 int cmp = memcmp (pnote1->note.namedata + 3, 2046 pnote2->note.namedata + 3, 2047 pnote1->note.namesz < pnote2->note.namesz ? 2048 pnote1->note.namesz - 3 : pnote2->note.namesz - 3); 2049 if (cmp) 2050 return cmp; 2051 2052 if (pnote1->end < pnote2->start) 2053 return -1; 2054 if (pnote1->start > pnote2->end) 2055 return 1; 2056 2057 /* Overlaps - we should merge the two ranges. */ 2058 if (pnote1->start < pnote2->start) 2059 return -1; 2060 if (pnote1->end > pnote2->end) 2061 return 1; 2062 if (pnote1->end < pnote2->end) 2063 return -1; 2064 2065 /* Put OPEN notes before function notes. */ 2066 if (is_open_note (pnote1) && ! is_open_note (pnote2)) 2067 return -1; 2068 if (! is_open_note (pnote1) && is_open_note (pnote2)) 2069 return 1; 2070 2071 return 0; 2072} 2073 2074/* This sorting function is used to get the notes into an order 2075 that makes eliminating address ranges easier. */ 2076 2077static int 2078sort_gnu_build_notes (const void * data1, const void * data2) 2079{ 2080 objcopy_internal_note * pnote1 = (objcopy_internal_note *) data1; 2081 objcopy_internal_note * pnote2 = (objcopy_internal_note *) data2; 2082 2083 if (pnote1->note.type != pnote2->note.type) 2084 { 2085 /* Move deleted notes to the end. */ 2086 if (is_deleted_note (pnote1)) /* 1: OFD 2: OFD */ 2087 return 1; 2088 2089 /* Move OPEN notes to the start. */ 2090 if (is_open_note (pnote1)) /* 1: OF 2: OFD */ 2091 return -1; 2092 2093 if (is_deleted_note (pnote2)) /* 1: F 2: O D */ 2094 return -1; 2095 2096 return 1; /* 1: F 2: O */ 2097 } 2098 2099 /* Sort by starting address. */ 2100 if (pnote1->start < pnote2->start) 2101 return -1; 2102 if (pnote1->start > pnote2->start) 2103 return 1; 2104 2105 /* Then by end address (bigger range first). */ 2106 if (pnote1->end > pnote2->end) 2107 return -1; 2108 if (pnote1->end < pnote2->end) 2109 return 1; 2110 2111 /* Then by attribute type. */ 2112 if (pnote1->note.namesz > 4 2113 && pnote2->note.namesz > 4 2114 && pnote1->note.namedata[3] != pnote2->note.namedata[3]) 2115 return pnote1->note.namedata[3] - pnote2->note.namedata[3]; 2116 2117 return 0; 2118} 2119 2120/* Merge the notes on SEC, removing redundant entries. 2121 Returns the new, smaller size of the section upon success. */ 2122 2123static bfd_size_type 2124merge_gnu_build_notes (bfd * abfd, 2125 asection * sec, 2126 bfd_size_type size, 2127 bfd_byte * contents) 2128{ 2129 objcopy_internal_note * pnotes_end; 2130 objcopy_internal_note * pnotes = NULL; 2131 objcopy_internal_note * pnote; 2132 bfd_size_type remain = size; 2133 unsigned version_1_seen = 0; 2134 unsigned version_2_seen = 0; 2135 unsigned version_3_seen = 0; 2136 const char * err = NULL; 2137 bfd_byte * in = contents; 2138 unsigned long previous_func_start = 0; 2139 unsigned long previous_open_start = 0; 2140 unsigned long previous_func_end = 0; 2141 unsigned long previous_open_end = 0; 2142 long relsize; 2143 2144 relsize = bfd_get_reloc_upper_bound (abfd, sec); 2145 if (relsize > 0) 2146 { 2147 arelent ** relpp; 2148 long relcount; 2149 2150 /* If there are relocs associated with this section then we 2151 cannot safely merge it. */ 2152 relpp = (arelent **) xmalloc (relsize); 2153 relcount = bfd_canonicalize_reloc (abfd, sec, relpp, isympp); 2154 free (relpp); 2155 if (relcount != 0) 2156 { 2157 if (! is_strip) 2158 non_fatal (_("%s[%s]: Cannot merge - there are relocations against this section"), 2159 bfd_get_filename (abfd), bfd_section_name (sec)); 2160 goto done; 2161 } 2162 } 2163 2164 /* Make a copy of the notes and convert to our internal format. 2165 Minimum size of a note is 12 bytes. Also locate the version 2166 notes and check them. */ 2167 pnote = pnotes = (objcopy_internal_note *) 2168 xcalloc ((size / 12), sizeof (* pnote)); 2169 while (remain >= 12) 2170 { 2171 bfd_vma start, end; 2172 2173 pnote->note.namesz = bfd_get_32 (abfd, in); 2174 pnote->note.descsz = bfd_get_32 (abfd, in + 4); 2175 pnote->note.type = bfd_get_32 (abfd, in + 8); 2176 pnote->padded_namesz = (pnote->note.namesz + 3) & ~3; 2177 2178 if (((pnote->note.descsz + 3) & ~3) != pnote->note.descsz) 2179 { 2180 err = _("corrupt GNU build attribute note: description size not a factor of 4"); 2181 goto done; 2182 } 2183 2184 if (pnote->note.type != NT_GNU_BUILD_ATTRIBUTE_OPEN 2185 && pnote->note.type != NT_GNU_BUILD_ATTRIBUTE_FUNC) 2186 { 2187 err = _("corrupt GNU build attribute note: wrong note type"); 2188 goto done; 2189 } 2190 2191 if (pnote->padded_namesz + pnote->note.descsz + 12 > remain) 2192 { 2193 err = _("corrupt GNU build attribute note: note too big"); 2194 goto done; 2195 } 2196 2197 if (pnote->note.namesz < 2) 2198 { 2199 err = _("corrupt GNU build attribute note: name too small"); 2200 goto done; 2201 } 2202 2203 pnote->note.namedata = (char *)(in + 12); 2204 pnote->note.descdata = (char *)(in + 12 + pnote->padded_namesz); 2205 2206 remain -= 12 + pnote->padded_namesz + pnote->note.descsz; 2207 in += 12 + pnote->padded_namesz + pnote->note.descsz; 2208 2209 if (pnote->note.namesz > 2 2210 && pnote->note.namedata[0] == '$' 2211 && pnote->note.namedata[1] == GNU_BUILD_ATTRIBUTE_VERSION 2212 && pnote->note.namedata[2] == '1') 2213 ++ version_1_seen; 2214 else if (is_version_note (pnote)) 2215 { 2216 if (pnote->note.namedata[4] == '2') 2217 ++ version_2_seen; 2218 else if (pnote->note.namedata[4] == '3') 2219 ++ version_3_seen; 2220 else 2221 { 2222 err = _("corrupt GNU build attribute note: unsupported version"); 2223 goto done; 2224 } 2225 } 2226 2227 switch (pnote->note.descsz) 2228 { 2229 case 0: 2230 start = end = 0; 2231 break; 2232 2233 case 4: 2234 start = bfd_get_32 (abfd, pnote->note.descdata); 2235 /* FIXME: For version 1 and 2 notes we should try to 2236 calculate the end address by finding a symbol whose 2237 value is START, and then adding in its size. 2238 2239 For now though, since v1 and v2 was not intended to 2240 handle gaps, we chose an artificially large end 2241 address. */ 2242 end = (bfd_vma) -1; 2243 break; 2244 2245 case 8: 2246 if (! is_64bit (abfd)) 2247 { 2248 start = bfd_get_32 (abfd, pnote->note.descdata); 2249 end = bfd_get_32 (abfd, pnote->note.descdata + 4); 2250 } 2251 else 2252 { 2253 start = bfd_get_64 (abfd, pnote->note.descdata); 2254 /* FIXME: For version 1 and 2 notes we should try to 2255 calculate the end address by finding a symbol whose 2256 value is START, and then adding in its size. 2257 2258 For now though, since v1 and v2 was not intended to 2259 handle gaps, we chose an artificially large end 2260 address. */ 2261 end = (bfd_vma) -1; 2262 } 2263 break; 2264 2265 case 16: 2266 start = bfd_get_64 (abfd, pnote->note.descdata); 2267 end = bfd_get_64 (abfd, pnote->note.descdata + 8); 2268 break; 2269 2270 default: 2271 err = _("corrupt GNU build attribute note: bad description size"); 2272 goto done; 2273 } 2274 2275 if (is_open_note (pnote)) 2276 { 2277 if (start) 2278 previous_open_start = start; 2279 2280 pnote->start = previous_open_start; 2281 2282 if (end) 2283 previous_open_end = end; 2284 2285 pnote->end = previous_open_end; 2286 } 2287 else 2288 { 2289 if (start) 2290 previous_func_start = start; 2291 2292 pnote->start = previous_func_start; 2293 2294 if (end) 2295 previous_func_end = end; 2296 2297 pnote->end = previous_func_end; 2298 } 2299 2300 if (pnote->note.namedata[pnote->note.namesz - 1] != 0) 2301 { 2302 err = _("corrupt GNU build attribute note: name not NUL terminated"); 2303 goto done; 2304 } 2305 2306 pnote ++; 2307 } 2308 2309 pnotes_end = pnote; 2310 2311 /* Check that the notes are valid. */ 2312 if (remain != 0) 2313 { 2314 err = _("corrupt GNU build attribute notes: excess data at end"); 2315 goto done; 2316 } 2317 2318 if (version_1_seen == 0 && version_2_seen == 0 && version_3_seen == 0) 2319 { 2320#if 0 2321 err = _("bad GNU build attribute notes: no known versions detected"); 2322 goto done; 2323#else 2324 /* This happens with glibc. No idea why. */ 2325 non_fatal (_("%s[%s]: Warning: version note missing - assuming version 3"), 2326 bfd_get_filename (abfd), bfd_section_name (sec)); 2327 version_3_seen = 2; 2328#endif 2329 } 2330 2331 if ( (version_1_seen > 0 && version_2_seen > 0) 2332 || (version_1_seen > 0 && version_3_seen > 0) 2333 || (version_2_seen > 0 && version_3_seen > 0)) 2334 { 2335 err = _("bad GNU build attribute notes: multiple different versions"); 2336 goto done; 2337 } 2338 2339 /* We are now only supporting the merging v3+ notes 2340 - it makes things much simpler. */ 2341 if (version_3_seen == 0) 2342 { 2343 merge_debug ("%s: skipping merge - not using v3 notes", bfd_section_name (sec)); 2344 goto done; 2345 } 2346 2347 merge_debug ("Merging section %s which contains %ld notes\n", 2348 sec->name, pnotes_end - pnotes); 2349 2350 /* Sort the notes. */ 2351 qsort (pnotes, pnotes_end - pnotes, sizeof (* pnotes), 2352 compare_gnu_build_notes); 2353 2354#if DEBUG_MERGE 2355 merge_debug ("Results of initial sort:\n"); 2356 for (pnote = pnotes; pnote < pnotes_end; pnote ++) 2357 merge_debug ("offset %#08lx range %#08lx..%#08lx type %ld attribute %d namesz %ld\n", 2358 (pnote->note.namedata - (char *) contents) - 12, 2359 pnote->start, pnote->end, 2360 pnote->note.type, 2361 pnote->note.namedata[3], 2362 pnote->note.namesz 2363 ); 2364#endif 2365 2366 /* Now merge the notes. The rules are: 2367 1. If a note has a zero range, it can be eliminated. 2368 2. If two notes have the same namedata then: 2369 2a. If one note's range is fully covered by the other note 2370 then it can be deleted. 2371 2b. If one note's range partially overlaps or adjoins the 2372 other note then if they are both of the same type (open 2373 or func) then they can be merged and one deleted. If 2374 they are of different types then they cannot be merged. */ 2375 for (pnote = pnotes; pnote < pnotes_end; pnote ++) 2376 { 2377 /* Skip already deleted notes. 2378 FIXME: Can this happen ? We are scanning forwards and 2379 deleting backwards after all. */ 2380 if (is_deleted_note (pnote)) 2381 continue; 2382 2383 /* Rule 1 - delete 0-range notes. */ 2384 if (pnote->start == pnote->end) 2385 { 2386 merge_debug ("Delete note at offset %#08lx - empty range\n", 2387 (pnote->note.namedata - (char *) contents) - 12); 2388 pnote->note.type = 0; 2389 continue; 2390 } 2391 2392 int iter; 2393 objcopy_internal_note * back; 2394 2395 /* Rule 2: Check to see if there is an identical previous note. */ 2396 for (iter = 0, back = pnote - 1; back >= pnotes; back --) 2397 { 2398 if (is_deleted_note (back)) 2399 continue; 2400 2401 /* Our sorting function should have placed all identically 2402 attributed notes together, so if we see a note of a different 2403 attribute type stop searching. */ 2404 if (back->note.namesz != pnote->note.namesz 2405 || memcmp (back->note.namedata, 2406 pnote->note.namedata, pnote->note.namesz) != 0) 2407 break; 2408 2409 if (back->start == pnote->start 2410 && back->end == pnote->end) 2411 { 2412 merge_debug ("Delete note at offset %#08lx - duplicate of note at offset %#08lx\n", 2413 (pnote->note.namedata - (char *) contents) - 12, 2414 (back->note.namedata - (char *) contents) - 12); 2415 pnote->note.type = 0; 2416 break; 2417 } 2418 2419 /* Rule 2a. */ 2420 if (contained_by (pnote, back)) 2421 { 2422 merge_debug ("Delete note at offset %#08lx - fully contained by note at %#08lx\n", 2423 (pnote->note.namedata - (char *) contents) - 12, 2424 (back->note.namedata - (char *) contents) - 12); 2425 pnote->note.type = 0; 2426 break; 2427 } 2428 2429#if DEBUG_MERGE 2430 /* This should not happen as we have sorted the 2431 notes with earlier starting addresses first. */ 2432 if (contained_by (back, pnote)) 2433 merge_debug ("ERROR: UNEXPECTED CONTAINMENT\n"); 2434#endif 2435 2436 /* Rule 2b. */ 2437 if (overlaps_or_adjoins (back, pnote) 2438 && is_func_note (back) == is_func_note (pnote)) 2439 { 2440 merge_debug ("Delete note at offset %#08lx - merge into note at %#08lx\n", 2441 (pnote->note.namedata - (char *) contents) - 12, 2442 (back->note.namedata - (char *) contents) - 12); 2443 2444 back->end = back->end > pnote->end ? back->end : pnote->end; 2445 back->start = back->start < pnote->start ? back->start : pnote->start; 2446 pnote->note.type = 0; 2447 break; 2448 } 2449 2450 /* Don't scan too far back however. */ 2451 if (iter ++ > 16) 2452 { 2453 /* FIXME: Not sure if this can ever be triggered. */ 2454 merge_debug ("ITERATION LIMIT REACHED\n"); 2455 break; 2456 } 2457 } 2458#if DEBUG_MERGE 2459 if (! is_deleted_note (pnote)) 2460 merge_debug ("Unable to do anything with note at %#08lx\n", 2461 (pnote->note.namedata - (char *) contents) - 12); 2462#endif 2463 } 2464 2465 /* Resort the notes. */ 2466 merge_debug ("Final sorting of notes\n"); 2467 qsort (pnotes, pnotes_end - pnotes, sizeof (* pnotes), sort_gnu_build_notes); 2468 2469 /* Reconstruct the ELF notes. */ 2470 bfd_byte * new_contents; 2471 bfd_byte * old; 2472 bfd_byte * new; 2473 bfd_size_type new_size; 2474 bfd_vma prev_start = 0; 2475 bfd_vma prev_end = 0; 2476 2477 /* Not sure how, but the notes might grow in size. 2478 (eg see PR 1774507). Allow for this here. */ 2479 new = new_contents = xmalloc (size * 2); 2480 for (pnote = pnotes, old = contents; 2481 pnote < pnotes_end; 2482 pnote ++) 2483 { 2484 bfd_size_type note_size = 12 + pnote->padded_namesz + pnote->note.descsz; 2485 2486 if (! is_deleted_note (pnote)) 2487 { 2488 /* Create the note, potentially using the 2489 address range of the previous note. */ 2490 if (pnote->start == prev_start && pnote->end == prev_end) 2491 { 2492 bfd_put_32 (abfd, pnote->note.namesz, new); 2493 bfd_put_32 (abfd, 0, new + 4); 2494 bfd_put_32 (abfd, pnote->note.type, new + 8); 2495 new += 12; 2496 memcpy (new, pnote->note.namedata, pnote->note.namesz); 2497 if (pnote->note.namesz < pnote->padded_namesz) 2498 memset (new + pnote->note.namesz, 0, pnote->padded_namesz - pnote->note.namesz); 2499 new += pnote->padded_namesz; 2500 } 2501 else 2502 { 2503 bfd_put_32 (abfd, pnote->note.namesz, new); 2504 bfd_put_32 (abfd, is_64bit (abfd) ? 16 : 8, new + 4); 2505 bfd_put_32 (abfd, pnote->note.type, new + 8); 2506 new += 12; 2507 memcpy (new, pnote->note.namedata, pnote->note.namesz); 2508 if (pnote->note.namesz < pnote->padded_namesz) 2509 memset (new + pnote->note.namesz, 0, pnote->padded_namesz - pnote->note.namesz); 2510 new += pnote->padded_namesz; 2511 if (is_64bit (abfd)) 2512 { 2513 bfd_put_64 (abfd, pnote->start, new); 2514 bfd_put_64 (abfd, pnote->end, new + 8); 2515 new += 16; 2516 } 2517 else 2518 { 2519 bfd_put_32 (abfd, pnote->start, new); 2520 bfd_put_32 (abfd, pnote->end, new + 4); 2521 new += 8; 2522 } 2523 2524 prev_start = pnote->start; 2525 prev_end = pnote->end; 2526 } 2527 } 2528 2529 old += note_size; 2530 } 2531 2532#if DEBUG_MERGE 2533 merge_debug ("Results of merge:\n"); 2534 for (pnote = pnotes; pnote < pnotes_end; pnote ++) 2535 if (! is_deleted_note (pnote)) 2536 merge_debug ("offset %#08lx range %#08lx..%#08lx type %ld attribute %d namesz %ld\n", 2537 (pnote->note.namedata - (char *) contents) - 12, 2538 pnote->start, pnote->end, 2539 pnote->note.type, 2540 pnote->note.namedata[3], 2541 pnote->note.namesz 2542 ); 2543#endif 2544 2545 new_size = new - new_contents; 2546 if (new_size < size) 2547 { 2548 memcpy (contents, new_contents, new_size); 2549 size = new_size; 2550 } 2551 free (new_contents); 2552 2553 done: 2554 if (err) 2555 { 2556 bfd_set_error (bfd_error_bad_value); 2557 bfd_nonfatal_message (NULL, abfd, sec, err); 2558 status = 1; 2559 } 2560 2561 free (pnotes); 2562 return size; 2563} 2564 2565static flagword 2566check_new_section_flags (flagword flags, bfd * abfd, const char * secname) 2567{ 2568 /* Only set the SEC_COFF_SHARED flag on COFF files. 2569 The same bit value is used by ELF targets to indicate 2570 compressed sections, and setting that flag here breaks 2571 things. */ 2572 if ((flags & SEC_COFF_SHARED) 2573 && bfd_get_flavour (abfd) != bfd_target_coff_flavour) 2574 { 2575 non_fatal (_("%s[%s]: Note - dropping 'share' flag as output format is not COFF"), 2576 bfd_get_filename (abfd), secname); 2577 flags &= ~ SEC_COFF_SHARED; 2578 } 2579 return flags; 2580} 2581 2582/* Copy object file IBFD onto OBFD. 2583 Returns TRUE upon success, FALSE otherwise. */ 2584 2585static bfd_boolean 2586copy_object (bfd *ibfd, bfd *obfd, const bfd_arch_info_type *input_arch) 2587{ 2588 bfd_vma start; 2589 long symcount; 2590 asection **osections = NULL; 2591 asection *osec; 2592 asection *gnu_debuglink_section = NULL; 2593 bfd_size_type *gaps = NULL; 2594 bfd_size_type max_gap = 0; 2595 long symsize; 2596 void *dhandle; 2597 enum bfd_architecture iarch; 2598 unsigned int imach; 2599 unsigned int num_sec, i; 2600 2601 if (ibfd->xvec->byteorder != obfd->xvec->byteorder 2602 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN 2603 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) 2604 { 2605 /* PR 17636: Call non-fatal so that we return to our parent who 2606 may need to tidy temporary files. */ 2607 non_fatal (_("unable to change endianness of '%s'"), 2608 bfd_get_archive_filename (ibfd)); 2609 return FALSE; 2610 } 2611 2612 if (ibfd->read_only) 2613 { 2614 non_fatal (_("unable to modify '%s' due to errors"), 2615 bfd_get_archive_filename (ibfd)); 2616 return FALSE; 2617 } 2618 2619 if (!bfd_set_format (obfd, bfd_get_format (ibfd))) 2620 { 2621 bfd_nonfatal_message (NULL, obfd, NULL, NULL); 2622 return FALSE; 2623 } 2624 2625 if (ibfd->sections == NULL) 2626 { 2627 non_fatal (_("error: the input file '%s' has no sections"), 2628 bfd_get_archive_filename (ibfd)); 2629 return FALSE; 2630 } 2631 2632 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) 2633 { 2634 if ((do_debug_sections & compress) != 0 2635 && do_debug_sections != compress) 2636 { 2637 non_fatal (_("--compress-debug-sections=[zlib|zlib-gnu|zlib-gabi] is unsupported on `%s'"), 2638 bfd_get_archive_filename (ibfd)); 2639 return FALSE; 2640 } 2641 2642 if (do_elf_stt_common) 2643 { 2644 non_fatal (_("--elf-stt-common=[yes|no] is unsupported on `%s'"), 2645 bfd_get_archive_filename (ibfd)); 2646 return FALSE; 2647 } 2648 } 2649 2650 if (verbose) 2651 printf (_("copy from `%s' [%s] to `%s' [%s]\n"), 2652 bfd_get_archive_filename (ibfd), bfd_get_target (ibfd), 2653 bfd_get_filename (obfd), bfd_get_target (obfd)); 2654 2655 if (extract_symbol) 2656 start = 0; 2657 else 2658 { 2659 if (set_start_set) 2660 start = set_start; 2661 else 2662 start = bfd_get_start_address (ibfd); 2663 start += change_start; 2664 } 2665 2666 /* Neither the start address nor the flags 2667 need to be set for a core file. */ 2668 if (bfd_get_format (obfd) != bfd_core) 2669 { 2670 flagword flags; 2671 2672 flags = bfd_get_file_flags (ibfd); 2673 flags |= bfd_flags_to_set; 2674 flags &= ~bfd_flags_to_clear; 2675 flags &= bfd_applicable_file_flags (obfd); 2676 2677 if (strip_symbols == STRIP_ALL) 2678 flags &= ~HAS_RELOC; 2679 2680 if (!bfd_set_start_address (obfd, start) 2681 || !bfd_set_file_flags (obfd, flags)) 2682 { 2683 bfd_nonfatal_message (NULL, ibfd, NULL, NULL); 2684 return FALSE; 2685 } 2686 } 2687 2688 /* Copy architecture of input file to output file. */ 2689 iarch = bfd_get_arch (ibfd); 2690 imach = bfd_get_mach (ibfd); 2691 if (input_arch) 2692 { 2693 if (iarch == bfd_arch_unknown) 2694 { 2695 iarch = input_arch->arch; 2696 imach = input_arch->mach; 2697 } 2698 else 2699 non_fatal (_("Input file `%s' ignores binary architecture parameter."), 2700 bfd_get_archive_filename (ibfd)); 2701 } 2702 if (iarch == bfd_arch_unknown 2703 && bfd_get_flavour (ibfd) != bfd_target_elf_flavour 2704 && bfd_get_flavour (obfd) == bfd_target_elf_flavour) 2705 { 2706 const struct elf_backend_data *bed = get_elf_backend_data (obfd); 2707 iarch = bed->arch; 2708 imach = 0; 2709 } 2710 if (!bfd_set_arch_mach (obfd, iarch, imach) 2711 && (ibfd->target_defaulted 2712 || bfd_get_arch (ibfd) != bfd_get_arch (obfd))) 2713 { 2714 if (bfd_get_arch (ibfd) == bfd_arch_unknown) 2715 non_fatal (_("Unable to recognise the format of the input file `%s'"), 2716 bfd_get_archive_filename (ibfd)); 2717 else 2718 non_fatal (_("Output file cannot represent architecture `%s'"), 2719 bfd_printable_arch_mach (bfd_get_arch (ibfd), 2720 bfd_get_mach (ibfd))); 2721 return FALSE; 2722 } 2723 2724 if (!bfd_set_format (obfd, bfd_get_format (ibfd))) 2725 { 2726 bfd_nonfatal_message (NULL, ibfd, NULL, NULL); 2727 return FALSE; 2728 } 2729 2730 if (bfd_get_flavour (obfd) == bfd_target_coff_flavour 2731 && bfd_pei_p (obfd)) 2732 { 2733 /* Set up PE parameters. */ 2734 pe_data_type *pe = pe_data (obfd); 2735 2736 /* Copy PE parameters before changing them. */ 2737 if (bfd_get_flavour (ibfd) == bfd_target_coff_flavour 2738 && bfd_pei_p (ibfd)) 2739 pe->pe_opthdr = pe_data (ibfd)->pe_opthdr; 2740 2741 if (pe_file_alignment != (bfd_vma) -1) 2742 pe->pe_opthdr.FileAlignment = pe_file_alignment; 2743 else 2744 pe_file_alignment = PE_DEF_FILE_ALIGNMENT; 2745 2746 if (pe_heap_commit != (bfd_vma) -1) 2747 pe->pe_opthdr.SizeOfHeapCommit = pe_heap_commit; 2748 2749 if (pe_heap_reserve != (bfd_vma) -1) 2750 pe->pe_opthdr.SizeOfHeapCommit = pe_heap_reserve; 2751 2752 if (pe_image_base != (bfd_vma) -1) 2753 pe->pe_opthdr.ImageBase = pe_image_base; 2754 2755 if (pe_section_alignment != (bfd_vma) -1) 2756 pe->pe_opthdr.SectionAlignment = pe_section_alignment; 2757 else 2758 pe_section_alignment = PE_DEF_SECTION_ALIGNMENT; 2759 2760 if (pe_stack_commit != (bfd_vma) -1) 2761 pe->pe_opthdr.SizeOfStackCommit = pe_stack_commit; 2762 2763 if (pe_stack_reserve != (bfd_vma) -1) 2764 pe->pe_opthdr.SizeOfStackCommit = pe_stack_reserve; 2765 2766 if (pe_subsystem != -1) 2767 pe->pe_opthdr.Subsystem = pe_subsystem; 2768 2769 if (pe_major_subsystem_version != -1) 2770 pe->pe_opthdr.MajorSubsystemVersion = pe_major_subsystem_version; 2771 2772 if (pe_minor_subsystem_version != -1) 2773 pe->pe_opthdr.MinorSubsystemVersion = pe_minor_subsystem_version; 2774 2775 if (pe_file_alignment > pe_section_alignment) 2776 { 2777 char file_alignment[20], section_alignment[20]; 2778 2779 sprintf_vma (file_alignment, pe_file_alignment); 2780 sprintf_vma (section_alignment, pe_section_alignment); 2781 non_fatal (_("warning: file alignment (0x%s) > section alignment (0x%s)"), 2782 2783 file_alignment, section_alignment); 2784 } 2785 2786 if (preserve_dates 2787 && bfd_get_flavour (ibfd) == bfd_target_coff_flavour 2788 && bfd_pei_p (ibfd)) 2789 pe->timestamp = pe_data (ibfd)->coff.timestamp; 2790 } 2791 2792 if (isympp) 2793 free (isympp); 2794 2795 if (osympp != isympp) 2796 free (osympp); 2797 2798 isympp = NULL; 2799 osympp = NULL; 2800 2801 symsize = bfd_get_symtab_upper_bound (ibfd); 2802 if (symsize < 0) 2803 { 2804 bfd_nonfatal_message (NULL, ibfd, NULL, NULL); 2805 return FALSE; 2806 } 2807 2808 osympp = isympp = (asymbol **) xmalloc (symsize); 2809 symcount = bfd_canonicalize_symtab (ibfd, isympp); 2810 if (symcount < 0) 2811 { 2812 bfd_nonfatal_message (NULL, ibfd, NULL, NULL); 2813 return FALSE; 2814 } 2815 /* PR 17512: file: d6323821 2816 If the symbol table could not be loaded do not pretend that we have 2817 any symbols. This trips us up later on when we load the relocs. */ 2818 if (symcount == 0) 2819 { 2820 free (isympp); 2821 osympp = isympp = NULL; 2822 } 2823 2824 /* BFD mandates that all output sections be created and sizes set before 2825 any output is done. Thus, we traverse all sections multiple times. */ 2826 bfd_map_over_sections (ibfd, setup_section, obfd); 2827 2828 if (!extract_symbol) 2829 setup_bfd_headers (ibfd, obfd); 2830 2831 if (add_sections != NULL) 2832 { 2833 struct section_add *padd; 2834 struct section_list *pset; 2835 2836 for (padd = add_sections; padd != NULL; padd = padd->next) 2837 { 2838 flagword flags; 2839 2840 pset = find_section_list (padd->name, FALSE, 2841 SECTION_CONTEXT_SET_FLAGS); 2842 if (pset != NULL) 2843 { 2844 flags = pset->flags | SEC_HAS_CONTENTS; 2845 flags = check_new_section_flags (flags, obfd, padd->name); 2846 } 2847 else 2848 flags = SEC_HAS_CONTENTS | SEC_READONLY | SEC_DATA; 2849 2850 /* bfd_make_section_with_flags() does not return very helpful 2851 error codes, so check for the most likely user error first. */ 2852 if (bfd_get_section_by_name (obfd, padd->name)) 2853 { 2854 bfd_nonfatal_message (NULL, obfd, NULL, 2855 _("can't add section '%s'"), padd->name); 2856 return FALSE; 2857 } 2858 else 2859 { 2860 /* We use LINKER_CREATED here so that the backend hooks 2861 will create any special section type information, 2862 instead of presuming we know what we're doing merely 2863 because we set the flags. */ 2864 padd->section = bfd_make_section_with_flags 2865 (obfd, padd->name, flags | SEC_LINKER_CREATED); 2866 if (padd->section == NULL) 2867 { 2868 bfd_nonfatal_message (NULL, obfd, NULL, 2869 _("can't create section `%s'"), 2870 padd->name); 2871 return FALSE; 2872 } 2873 } 2874 2875 if (!bfd_set_section_size (padd->section, padd->size)) 2876 { 2877 bfd_nonfatal_message (NULL, obfd, padd->section, NULL); 2878 return FALSE; 2879 } 2880 2881 pset = find_section_list (padd->name, FALSE, 2882 SECTION_CONTEXT_SET_VMA | SECTION_CONTEXT_ALTER_VMA); 2883 if (pset != NULL 2884 && !bfd_set_section_vma (padd->section, pset->vma_val)) 2885 { 2886 bfd_nonfatal_message (NULL, obfd, padd->section, NULL); 2887 return FALSE; 2888 } 2889 2890 pset = find_section_list (padd->name, FALSE, 2891 SECTION_CONTEXT_SET_LMA | SECTION_CONTEXT_ALTER_LMA); 2892 if (pset != NULL) 2893 { 2894 padd->section->lma = pset->lma_val; 2895 2896 if (!bfd_set_section_alignment 2897 (padd->section, bfd_section_alignment (padd->section))) 2898 { 2899 bfd_nonfatal_message (NULL, obfd, padd->section, NULL); 2900 return FALSE; 2901 } 2902 } 2903 } 2904 } 2905 2906 if (update_sections != NULL) 2907 { 2908 struct section_add *pupdate; 2909 2910 for (pupdate = update_sections; 2911 pupdate != NULL; 2912 pupdate = pupdate->next) 2913 { 2914 pupdate->section = bfd_get_section_by_name (ibfd, pupdate->name); 2915 if (pupdate->section == NULL) 2916 { 2917 non_fatal (_("error: %s not found, can't be updated"), pupdate->name); 2918 return FALSE; 2919 } 2920 2921 osec = pupdate->section->output_section; 2922 if (!bfd_set_section_size (osec, pupdate->size)) 2923 { 2924 bfd_nonfatal_message (NULL, obfd, osec, NULL); 2925 return FALSE; 2926 } 2927 } 2928 } 2929 2930 merged_note_section * merged_note_sections = NULL; 2931 if (merge_notes) 2932 { 2933 /* This palaver is necessary because we must set the output 2934 section size first, before its contents are ready. */ 2935 for (osec = ibfd->sections; osec != NULL; osec = osec->next) 2936 { 2937 if (! is_mergeable_note_section (ibfd, osec)) 2938 continue; 2939 2940 /* If the section is going to be completly deleted then 2941 do not bother to merge it. */ 2942 if (osec->output_section == NULL) 2943 continue; 2944 2945 bfd_size_type size = bfd_section_size (osec); 2946 2947 if (size == 0) 2948 { 2949 bfd_nonfatal_message (NULL, ibfd, osec, 2950 _("warning: note section is empty")); 2951 continue; 2952 } 2953 2954 merged_note_section * merged = xmalloc (sizeof * merged); 2955 merged->contents = NULL; 2956 if (! bfd_get_full_section_contents (ibfd, osec, & merged->contents)) 2957 { 2958 bfd_nonfatal_message (NULL, ibfd, osec, 2959 _("warning: could not load note section")); 2960 free (merged); 2961 continue; 2962 } 2963 2964 merged->size = merge_gnu_build_notes (ibfd, osec, size, 2965 merged->contents); 2966 2967 /* FIXME: Once we have read the contents in, we must write 2968 them out again. So even if the mergeing has achieved 2969 nothing we still add this entry to the merge list. */ 2970 2971 if (size != merged->size 2972 && !bfd_set_section_size (osec->output_section, merged->size)) 2973 { 2974 bfd_nonfatal_message (NULL, obfd, osec, 2975 _("warning: failed to set merged notes size")); 2976 free (merged->contents); 2977 free (merged); 2978 continue; 2979 } 2980 2981 /* Add section to list of merged sections. */ 2982 merged->sec = osec; 2983 merged->next = merged_note_sections; 2984 merged_note_sections = merged; 2985 } 2986 } 2987 2988 if (dump_sections != NULL) 2989 { 2990 struct section_add * pdump; 2991 2992 for (pdump = dump_sections; pdump != NULL; pdump = pdump->next) 2993 { 2994 FILE * f; 2995 bfd_byte *contents; 2996 2997 osec = bfd_get_section_by_name (ibfd, pdump->name); 2998 if (osec == NULL) 2999 { 3000 bfd_nonfatal_message (NULL, ibfd, NULL, 3001 _("can't dump section '%s' - it does not exist"), 3002 pdump->name); 3003 continue; 3004 } 3005 3006 if ((bfd_section_flags (osec) & SEC_HAS_CONTENTS) == 0) 3007 { 3008 bfd_nonfatal_message (NULL, ibfd, osec, 3009 _("can't dump section - it has no contents")); 3010 continue; 3011 } 3012 3013 bfd_size_type size = bfd_section_size (osec); 3014 /* Note - we allow the dumping of zero-sized sections, 3015 creating an empty file. */ 3016 3017 f = fopen (pdump->filename, FOPEN_WB); 3018 if (f == NULL) 3019 { 3020 bfd_nonfatal_message (pdump->filename, NULL, NULL, 3021 _("could not open section dump file")); 3022 continue; 3023 } 3024 3025 if (bfd_malloc_and_get_section (ibfd, osec, &contents)) 3026 { 3027 if (size != 0 && fwrite (contents, 1, size, f) != size) 3028 { 3029 non_fatal (_("error writing section contents to %s (error: %s)"), 3030 pdump->filename, 3031 strerror (errno)); 3032 free (contents); 3033 fclose (f); 3034 return FALSE; 3035 } 3036 } 3037 else 3038 bfd_nonfatal_message (NULL, ibfd, osec, 3039 _("could not retrieve section contents")); 3040 3041 fclose (f); 3042 free (contents); 3043 } 3044 } 3045 3046 if (gnu_debuglink_filename != NULL) 3047 { 3048 /* PR 15125: Give a helpful warning message if 3049 the debuglink section already exists, and 3050 allow the rest of the copy to complete. */ 3051 if (bfd_get_section_by_name (obfd, ".gnu_debuglink")) 3052 { 3053 non_fatal (_("%s: debuglink section already exists"), 3054 bfd_get_filename (obfd)); 3055 gnu_debuglink_filename = NULL; 3056 } 3057 else 3058 { 3059 gnu_debuglink_section = bfd_create_gnu_debuglink_section 3060 (obfd, gnu_debuglink_filename); 3061 3062 if (gnu_debuglink_section == NULL) 3063 { 3064 bfd_nonfatal_message (NULL, obfd, NULL, 3065 _("cannot create debug link section `%s'"), 3066 gnu_debuglink_filename); 3067 return FALSE; 3068 } 3069 3070 /* Special processing for PE format files. We 3071 have no way to distinguish PE from COFF here. */ 3072 if (bfd_get_flavour (obfd) == bfd_target_coff_flavour) 3073 { 3074 bfd_vma debuglink_vma; 3075 asection * highest_section; 3076 3077 /* The PE spec requires that all sections be adjacent and sorted 3078 in ascending order of VMA. It also specifies that debug 3079 sections should be last. This is despite the fact that debug 3080 sections are not loaded into memory and so in theory have no 3081 use for a VMA. 3082 3083 This means that the debuglink section must be given a non-zero 3084 VMA which makes it contiguous with other debug sections. So 3085 walk the current section list, find the section with the 3086 highest VMA and start the debuglink section after that one. */ 3087 for (osec = obfd->sections, highest_section = NULL; 3088 osec != NULL; 3089 osec = osec->next) 3090 if (osec->vma > 0 3091 && (highest_section == NULL 3092 || osec->vma > highest_section->vma)) 3093 highest_section = osec; 3094 3095 if (highest_section) 3096 debuglink_vma = BFD_ALIGN (highest_section->vma 3097 + highest_section->size, 3098 /* FIXME: We ought to be using 3099 COFF_PAGE_SIZE here or maybe 3100 bfd_section_alignment() (if it 3101 was set) but since this is for PE 3102 and we know the required alignment 3103 it is easier just to hard code it. */ 3104 0x1000); 3105 else 3106 /* Umm, not sure what to do in this case. */ 3107 debuglink_vma = 0x1000; 3108 3109 bfd_set_section_vma (gnu_debuglink_section, debuglink_vma); 3110 } 3111 } 3112 } 3113 3114 num_sec = bfd_count_sections (obfd); 3115 if (num_sec != 0 3116 && (gap_fill_set || pad_to_set)) 3117 { 3118 asection **set; 3119 3120 /* We must fill in gaps between the sections and/or we must pad 3121 the last section to a specified address. We do this by 3122 grabbing a list of the sections, sorting them by VMA, and 3123 increasing the section sizes as required to fill the gaps. 3124 We write out the gap contents below. */ 3125 3126 osections = xmalloc (num_sec * sizeof (*osections)); 3127 set = osections; 3128 bfd_map_over_sections (obfd, get_sections, &set); 3129 3130 qsort (osections, num_sec, sizeof (*osections), compare_section_lma); 3131 3132 gaps = xmalloc (num_sec * sizeof (*gaps)); 3133 memset (gaps, 0, num_sec * sizeof (*gaps)); 3134 3135 if (gap_fill_set) 3136 { 3137 for (i = 0; i < num_sec - 1; i++) 3138 { 3139 flagword flags; 3140 bfd_size_type size; /* Octets. */ 3141 bfd_vma gap_start, gap_stop; /* Octets. */ 3142 unsigned int opb1 = bfd_octets_per_byte (obfd, osections[i]); 3143 unsigned int opb2 = bfd_octets_per_byte (obfd, osections[i+1]); 3144 3145 flags = bfd_section_flags (osections[i]); 3146 if ((flags & SEC_HAS_CONTENTS) == 0 3147 || (flags & SEC_LOAD) == 0) 3148 continue; 3149 3150 size = bfd_section_size (osections[i]); 3151 gap_start = bfd_section_lma (osections[i]) * opb1 + size; 3152 gap_stop = bfd_section_lma (osections[i + 1]) * opb2; 3153 if (gap_start < gap_stop) 3154 { 3155 if (!bfd_set_section_size (osections[i], 3156 size + (gap_stop - gap_start))) 3157 { 3158 bfd_nonfatal_message (NULL, obfd, osections[i], 3159 _("Can't fill gap after section")); 3160 status = 1; 3161 break; 3162 } 3163 gaps[i] = gap_stop - gap_start; 3164 if (max_gap < gap_stop - gap_start) 3165 max_gap = gap_stop - gap_start; 3166 } 3167 } 3168 } 3169 3170 if (pad_to_set) 3171 { 3172 bfd_vma lma; /* Octets. */ 3173 bfd_size_type size; /* Octets. */ 3174 unsigned int opb = bfd_octets_per_byte (obfd, osections[num_sec - 1]); 3175 bfd_vma _pad_to = pad_to * opb; 3176 3177 lma = bfd_section_lma (osections[num_sec - 1]) * opb; 3178 size = bfd_section_size (osections[num_sec - 1]); 3179 if (lma + size < _pad_to) 3180 { 3181 if (!bfd_set_section_size (osections[num_sec - 1], _pad_to - lma)) 3182 { 3183 bfd_nonfatal_message (NULL, obfd, osections[num_sec - 1], 3184 _("can't add padding")); 3185 status = 1; 3186 } 3187 else 3188 { 3189 gaps[num_sec - 1] = _pad_to - (lma + size); 3190 if (max_gap < _pad_to - (lma + size)) 3191 max_gap = _pad_to - (lma + size); 3192 } 3193 } 3194 } 3195 } 3196 3197 /* Symbol filtering must happen after the output sections 3198 have been created, but before their contents are set. */ 3199 dhandle = NULL; 3200 if (convert_debugging) 3201 dhandle = read_debugging_info (ibfd, isympp, symcount, FALSE); 3202 3203 if (strip_symbols == STRIP_DEBUG 3204 || strip_symbols == STRIP_ALL 3205 || strip_symbols == STRIP_UNNEEDED 3206 || strip_symbols == STRIP_NONDEBUG 3207 || strip_symbols == STRIP_DWO 3208 || strip_symbols == STRIP_NONDWO 3209 || discard_locals != LOCALS_UNDEF 3210 || localize_hidden 3211 || htab_elements (strip_specific_htab) != 0 3212 || htab_elements (keep_specific_htab) != 0 3213 || htab_elements (localize_specific_htab) != 0 3214 || htab_elements (globalize_specific_htab) != 0 3215 || htab_elements (keepglobal_specific_htab) != 0 3216 || htab_elements (weaken_specific_htab) != 0 3217 || htab_elements (redefine_specific_htab) != 0 3218 || prefix_symbols_string 3219 || sections_removed 3220 || sections_copied 3221 || convert_debugging 3222 || change_leading_char 3223 || remove_leading_char 3224 || section_rename_list 3225 || weaken 3226 || add_symbols) 3227 { 3228 /* Mark symbols used in output relocations so that they 3229 are kept, even if they are local labels or static symbols. 3230 3231 Note we iterate over the input sections examining their 3232 relocations since the relocations for the output sections 3233 haven't been set yet. mark_symbols_used_in_relocations will 3234 ignore input sections which have no corresponding output 3235 section. */ 3236 if (strip_symbols != STRIP_ALL) 3237 { 3238 bfd_set_error (bfd_error_no_error); 3239 bfd_map_over_sections (ibfd, 3240 mark_symbols_used_in_relocations, 3241 isympp); 3242 if (bfd_get_error () != bfd_error_no_error) 3243 { 3244 status = 1; 3245 return FALSE; 3246 } 3247 } 3248 3249 osympp = (asymbol **) xmalloc ((symcount + add_symbols + 1) * sizeof (asymbol *)); 3250 symcount = filter_symbols (ibfd, obfd, osympp, isympp, symcount); 3251 } 3252 3253 if (convert_debugging && dhandle != NULL) 3254 { 3255 bfd_boolean res; 3256 3257 res = write_debugging_info (obfd, dhandle, &symcount, &osympp); 3258 3259 free (dhandle); 3260 dhandle = NULL; /* Paranoia... */ 3261 3262 if (! res) 3263 { 3264 status = 1; 3265 return FALSE; 3266 } 3267 } 3268 3269 bfd_set_symtab (obfd, osympp, symcount); 3270 3271 /* This has to happen before section positions are set. */ 3272 bfd_map_over_sections (ibfd, copy_relocations_in_section, obfd); 3273 3274 /* This has to happen after the symbol table has been set. */ 3275 bfd_map_over_sections (ibfd, copy_section, obfd); 3276 3277 if (add_sections != NULL) 3278 { 3279 struct section_add *padd; 3280 3281 for (padd = add_sections; padd != NULL; padd = padd->next) 3282 { 3283 if (! bfd_set_section_contents (obfd, padd->section, padd->contents, 3284 0, padd->size)) 3285 { 3286 bfd_nonfatal_message (NULL, obfd, padd->section, NULL); 3287 return FALSE; 3288 } 3289 } 3290 } 3291 3292 if (update_sections != NULL) 3293 { 3294 struct section_add *pupdate; 3295 3296 for (pupdate = update_sections; 3297 pupdate != NULL; 3298 pupdate = pupdate->next) 3299 { 3300 osec = pupdate->section->output_section; 3301 if (! bfd_set_section_contents (obfd, osec, pupdate->contents, 3302 0, pupdate->size)) 3303 { 3304 bfd_nonfatal_message (NULL, obfd, osec, NULL); 3305 return FALSE; 3306 } 3307 } 3308 } 3309 3310 if (merged_note_sections != NULL) 3311 { 3312 merged_note_section * merged = NULL; 3313 3314 for (osec = obfd->sections; osec != NULL; osec = osec->next) 3315 { 3316 if (! is_mergeable_note_section (obfd, osec)) 3317 continue; 3318 3319 if (merged == NULL) 3320 merged = merged_note_sections; 3321 3322 /* It is likely that output sections are in the same order 3323 as the input sections, but do not assume that this is 3324 the case. */ 3325 if (strcmp (bfd_section_name (merged->sec), 3326 bfd_section_name (osec)) != 0) 3327 { 3328 for (merged = merged_note_sections; 3329 merged != NULL; 3330 merged = merged->next) 3331 if (strcmp (bfd_section_name (merged->sec), 3332 bfd_section_name (osec)) == 0) 3333 break; 3334 3335 if (merged == NULL) 3336 { 3337 bfd_nonfatal_message 3338 (NULL, obfd, osec, 3339 _("error: failed to locate merged notes")); 3340 continue; 3341 } 3342 } 3343 3344 if (merged->contents == NULL) 3345 { 3346 bfd_nonfatal_message 3347 (NULL, obfd, osec, 3348 _("error: failed to merge notes")); 3349 continue; 3350 } 3351 3352 if (! bfd_set_section_contents (obfd, osec, merged->contents, 0, 3353 merged->size)) 3354 { 3355 bfd_nonfatal_message 3356 (NULL, obfd, osec, 3357 _("error: failed to copy merged notes into output")); 3358 return FALSE; 3359 } 3360 3361 merged = merged->next; 3362 } 3363 3364 /* Free the memory. */ 3365 merged_note_section * next; 3366 for (merged = merged_note_sections; merged != NULL; merged = next) 3367 { 3368 next = merged->next; 3369 free (merged->contents); 3370 free (merged); 3371 } 3372 } 3373 else if (merge_notes && ! is_strip) 3374 non_fatal (_("%s: Could not find any mergeable note sections"), 3375 bfd_get_filename (ibfd)); 3376 3377 if (gnu_debuglink_filename != NULL) 3378 { 3379 if (! bfd_fill_in_gnu_debuglink_section 3380 (obfd, gnu_debuglink_section, gnu_debuglink_filename)) 3381 { 3382 bfd_nonfatal_message (NULL, obfd, NULL, 3383 _("cannot fill debug link section `%s'"), 3384 gnu_debuglink_filename); 3385 return FALSE; 3386 } 3387 } 3388 3389 if (gaps != NULL) 3390 { 3391 bfd_byte *buf; 3392 3393 /* Fill in the gaps. */ 3394 if (max_gap > 8192) 3395 max_gap = 8192; 3396 buf = (bfd_byte *) xmalloc (max_gap); 3397 memset (buf, gap_fill, max_gap); 3398 3399 for (i = 0; i < num_sec; i++) 3400 { 3401 if (gaps[i] != 0) 3402 { 3403 bfd_size_type left; 3404 file_ptr off; 3405 3406 left = gaps[i]; 3407 off = bfd_section_size (osections[i]) - left; 3408 3409 while (left > 0) 3410 { 3411 bfd_size_type now; 3412 3413 if (left > 8192) 3414 now = 8192; 3415 else 3416 now = left; 3417 3418 if (! bfd_set_section_contents (obfd, osections[i], buf, 3419 off, now)) 3420 { 3421 bfd_nonfatal_message (NULL, obfd, osections[i], NULL); 3422 free (buf); 3423 return FALSE; 3424 } 3425 3426 left -= now; 3427 off += now; 3428 } 3429 } 3430 } 3431 3432 free (buf); 3433 free (gaps); 3434 gaps = NULL; 3435 } 3436 3437 /* Allow the BFD backend to copy any private data it understands 3438 from the input BFD to the output BFD. This is done last to 3439 permit the routine to look at the filtered symbol table, which is 3440 important for the ECOFF code at least. */ 3441 if (! bfd_copy_private_bfd_data (ibfd, obfd)) 3442 { 3443 bfd_nonfatal_message (NULL, obfd, NULL, 3444 _("error copying private BFD data")); 3445 return FALSE; 3446 } 3447 3448 /* Switch to the alternate machine code. We have to do this at the 3449 very end, because we only initialize the header when we create 3450 the first section. */ 3451 if (use_alt_mach_code != 0) 3452 { 3453 if (! bfd_alt_mach_code (obfd, use_alt_mach_code)) 3454 { 3455 non_fatal (_("this target does not support %lu alternative machine codes"), 3456 use_alt_mach_code); 3457 if (bfd_get_flavour (obfd) == bfd_target_elf_flavour) 3458 { 3459 non_fatal (_("treating that number as an absolute e_machine value instead")); 3460 elf_elfheader (obfd)->e_machine = use_alt_mach_code; 3461 } 3462 else 3463 non_fatal (_("ignoring the alternative value")); 3464 } 3465 } 3466 3467 return TRUE; 3468} 3469 3470/* Read each archive element in turn from IBFD, copy the 3471 contents to temp file, and keep the temp file handle. 3472 If 'force_output_target' is TRUE then make sure that 3473 all elements in the new archive are of the type 3474 'output_target'. */ 3475 3476static void 3477copy_archive (bfd *ibfd, bfd *obfd, const char *output_target, 3478 bfd_boolean force_output_target, 3479 const bfd_arch_info_type *input_arch) 3480{ 3481 struct name_list 3482 { 3483 struct name_list *next; 3484 const char *name; 3485 bfd *obfd; 3486 } *list, *l; 3487 bfd **ptr = &obfd->archive_head; 3488 bfd *this_element; 3489 char *dir; 3490 const char *filename; 3491 3492 /* PR 24281: It is not clear what should happen when copying a thin archive. 3493 One part is straight forward - if the output archive is in a different 3494 directory from the input archive then any relative paths in the library 3495 should be adjusted to the new location. But if any transformation 3496 options are active (eg strip, rename, add, etc) then the implication is 3497 that these should be applied to the files pointed to by the archive. 3498 But since objcopy is not destructive, this means that new files must be 3499 created, and there is no guidance for the names of the new files. (Plus 3500 this conflicts with one of the goals of thin libraries - only taking up 3501 a minimal amount of space in the file system). 3502 3503 So for now we fail if an attempt is made to copy such libraries. */ 3504 if (ibfd->is_thin_archive) 3505 { 3506 status = 1; 3507 bfd_set_error (bfd_error_invalid_operation); 3508 bfd_nonfatal_message (NULL, ibfd, NULL, 3509 _("sorry: copying thin archives is not currently supported")); 3510 return; 3511 } 3512 3513 /* Make a temp directory to hold the contents. */ 3514 dir = make_tempdir (bfd_get_filename (obfd)); 3515 if (dir == NULL) 3516 fatal (_("cannot create tempdir for archive copying (error: %s)"), 3517 strerror (errno)); 3518 3519 if (strip_symbols == STRIP_ALL) 3520 obfd->has_armap = FALSE; 3521 else 3522 obfd->has_armap = ibfd->has_armap; 3523 obfd->is_thin_archive = ibfd->is_thin_archive; 3524 3525 if (deterministic) 3526 obfd->flags |= BFD_DETERMINISTIC_OUTPUT; 3527 3528 list = NULL; 3529 3530 this_element = bfd_openr_next_archived_file (ibfd, NULL); 3531 3532 if (!bfd_set_format (obfd, bfd_get_format (ibfd))) 3533 { 3534 status = 1; 3535 bfd_nonfatal_message (NULL, obfd, NULL, NULL); 3536 goto cleanup_and_exit; 3537 } 3538 3539 while (!status && this_element != NULL) 3540 { 3541 char *output_name; 3542 bfd *output_bfd; 3543 bfd *last_element; 3544 struct stat buf; 3545 int stat_status = 0; 3546 bfd_boolean del = TRUE; 3547 bfd_boolean ok_object; 3548 3549 /* PR binutils/17533: Do not allow directory traversal 3550 outside of the current directory tree by archive members. */ 3551 if (! is_valid_archive_path (bfd_get_filename (this_element))) 3552 { 3553 non_fatal (_("illegal pathname found in archive member: %s"), 3554 bfd_get_filename (this_element)); 3555 status = 1; 3556 goto cleanup_and_exit; 3557 } 3558 3559 /* Create an output file for this member. */ 3560 output_name = concat (dir, "/", 3561 bfd_get_filename (this_element), (char *) 0); 3562 3563 /* If the file already exists, make another temp dir. */ 3564 if (stat (output_name, &buf) >= 0) 3565 { 3566 char * tmpdir = make_tempdir (output_name); 3567 3568 free (output_name); 3569 if (tmpdir == NULL) 3570 { 3571 non_fatal (_("cannot create tempdir for archive copying (error: %s)"), 3572 strerror (errno)); 3573 status = 1; 3574 goto cleanup_and_exit; 3575 } 3576 3577 l = (struct name_list *) xmalloc (sizeof (struct name_list)); 3578 l->name = tmpdir; 3579 l->next = list; 3580 l->obfd = NULL; 3581 list = l; 3582 output_name = concat (tmpdir, "/", 3583 bfd_get_filename (this_element), (char *) 0); 3584 } 3585 3586 if (preserve_dates) 3587 { 3588 stat_status = bfd_stat_arch_elt (this_element, &buf); 3589 3590 if (stat_status != 0) 3591 non_fatal (_("internal stat error on %s"), 3592 bfd_get_filename (this_element)); 3593 } 3594 3595 l = (struct name_list *) xmalloc (sizeof (struct name_list)); 3596 l->name = output_name; 3597 l->next = list; 3598 l->obfd = NULL; 3599 list = l; 3600 3601 ok_object = bfd_check_format (this_element, bfd_object); 3602 if (!ok_object) 3603 bfd_nonfatal_message (NULL, this_element, NULL, 3604 _("Unable to recognise the format of file")); 3605 3606 /* PR binutils/3110: Cope with archives 3607 containing multiple target types. */ 3608 if (force_output_target || !ok_object) 3609 output_bfd = bfd_openw (output_name, output_target); 3610 else 3611 output_bfd = bfd_openw (output_name, bfd_get_target (this_element)); 3612 3613 if (output_bfd == NULL) 3614 { 3615 bfd_nonfatal_message (output_name, NULL, NULL, NULL); 3616 status = 1; 3617 goto cleanup_and_exit; 3618 } 3619 3620 if (ok_object) 3621 { 3622 del = !copy_object (this_element, output_bfd, input_arch); 3623 3624 if (del && bfd_get_arch (this_element) == bfd_arch_unknown) 3625 /* Try again as an unknown object file. */ 3626 ok_object = FALSE; 3627 else if (!bfd_close (output_bfd)) 3628 { 3629 bfd_nonfatal_message (output_name, NULL, NULL, NULL); 3630 /* Error in new object file. Don't change archive. */ 3631 status = 1; 3632 } 3633 } 3634 3635 if (!ok_object) 3636 { 3637 del = !copy_unknown_object (this_element, output_bfd); 3638 if (!bfd_close_all_done (output_bfd)) 3639 { 3640 bfd_nonfatal_message (output_name, NULL, NULL, NULL); 3641 /* Error in new object file. Don't change archive. */ 3642 status = 1; 3643 } 3644 } 3645 3646 if (del) 3647 { 3648 unlink (output_name); 3649 status = 1; 3650 } 3651 else 3652 { 3653 if (preserve_dates && stat_status == 0) 3654 set_times (output_name, &buf); 3655 3656 /* Open the newly output file and attach to our list. */ 3657 output_bfd = bfd_openr (output_name, output_target); 3658 3659 l->obfd = output_bfd; 3660 3661 *ptr = output_bfd; 3662 ptr = &output_bfd->archive_next; 3663 3664 last_element = this_element; 3665 3666 this_element = bfd_openr_next_archived_file (ibfd, last_element); 3667 3668 bfd_close (last_element); 3669 } 3670 } 3671 *ptr = NULL; 3672 3673 filename = bfd_get_filename (obfd); 3674 if (!bfd_close (obfd)) 3675 { 3676 status = 1; 3677 bfd_nonfatal_message (filename, NULL, NULL, NULL); 3678 } 3679 3680 filename = bfd_get_filename (ibfd); 3681 if (!bfd_close (ibfd)) 3682 { 3683 status = 1; 3684 bfd_nonfatal_message (filename, NULL, NULL, NULL); 3685 } 3686 3687 cleanup_and_exit: 3688 /* Delete all the files that we opened. */ 3689 { 3690 struct name_list * next; 3691 3692 for (l = list; l != NULL; l = next) 3693 { 3694 if (l->obfd == NULL) 3695 rmdir (l->name); 3696 else 3697 { 3698 bfd_close (l->obfd); 3699 unlink (l->name); 3700 } 3701 next = l->next; 3702 free (l); 3703 } 3704 } 3705 3706 rmdir (dir); 3707} 3708 3709static void 3710set_long_section_mode (bfd *output_bfd, bfd *input_bfd, enum long_section_name_handling style) 3711{ 3712 /* This is only relevant to Coff targets. */ 3713 if (bfd_get_flavour (output_bfd) == bfd_target_coff_flavour) 3714 { 3715 if (style == KEEP 3716 && bfd_get_flavour (input_bfd) == bfd_target_coff_flavour) 3717 style = bfd_coff_long_section_names (input_bfd) ? ENABLE : DISABLE; 3718 bfd_coff_set_long_section_names (output_bfd, style != DISABLE); 3719 } 3720} 3721 3722/* The top-level control. */ 3723 3724static void 3725copy_file (const char *input_filename, const char *output_filename, 3726 const char *input_target, const char *output_target, 3727 const bfd_arch_info_type *input_arch) 3728{ 3729 bfd *ibfd; 3730 char **obj_matching; 3731 char **core_matching; 3732 off_t size = get_file_size (input_filename); 3733 3734 if (size < 1) 3735 { 3736 if (size == 0) 3737 non_fatal (_("error: the input file '%s' is empty"), 3738 input_filename); 3739 status = 1; 3740 return; 3741 } 3742 3743 /* To allow us to do "strip *" without dying on the first 3744 non-object file, failures are nonfatal. */ 3745 ibfd = bfd_openr (input_filename, input_target); 3746 if (ibfd == NULL) 3747 { 3748 bfd_nonfatal_message (input_filename, NULL, NULL, NULL); 3749 status = 1; 3750 return; 3751 } 3752 3753 switch (do_debug_sections) 3754 { 3755 case compress: 3756 case compress_zlib: 3757 case compress_gnu_zlib: 3758 case compress_gabi_zlib: 3759 ibfd->flags |= BFD_COMPRESS; 3760 /* Don't check if input is ELF here since this information is 3761 only available after bfd_check_format_matches is called. */ 3762 if (do_debug_sections != compress_gnu_zlib) 3763 ibfd->flags |= BFD_COMPRESS_GABI; 3764 break; 3765 case decompress: 3766 ibfd->flags |= BFD_DECOMPRESS; 3767 break; 3768 default: 3769 break; 3770 } 3771 3772 switch (do_elf_stt_common) 3773 { 3774 case elf_stt_common: 3775 ibfd->flags |= BFD_CONVERT_ELF_COMMON | BFD_USE_ELF_STT_COMMON; 3776 break; 3777 break; 3778 case no_elf_stt_common: 3779 ibfd->flags |= BFD_CONVERT_ELF_COMMON; 3780 break; 3781 default: 3782 break; 3783 } 3784 3785 if (bfd_check_format (ibfd, bfd_archive)) 3786 { 3787 bfd_boolean force_output_target; 3788 bfd *obfd; 3789 3790 /* bfd_get_target does not return the correct value until 3791 bfd_check_format succeeds. */ 3792 if (output_target == NULL) 3793 { 3794 output_target = bfd_get_target (ibfd); 3795 force_output_target = FALSE; 3796 } 3797 else 3798 force_output_target = TRUE; 3799 3800 obfd = bfd_openw (output_filename, output_target); 3801 if (obfd == NULL) 3802 { 3803 bfd_nonfatal_message (output_filename, NULL, NULL, NULL); 3804 status = 1; 3805 return; 3806 } 3807 3808 if (gnu_debuglink_filename != NULL) 3809 { 3810 non_fatal (_("--add-gnu-debuglink ignored for archive %s"), 3811 bfd_get_filename (ibfd)); 3812 gnu_debuglink_filename = NULL; 3813 } 3814 3815 /* This is a no-op on non-Coff targets. */ 3816 set_long_section_mode (obfd, ibfd, long_section_names); 3817 3818 copy_archive (ibfd, obfd, output_target, force_output_target, input_arch); 3819 } 3820 else if (bfd_check_format_matches (ibfd, bfd_object, &obj_matching)) 3821 { 3822 bfd *obfd; 3823 do_copy: 3824 3825 /* bfd_get_target does not return the correct value until 3826 bfd_check_format succeeds. */ 3827 if (output_target == NULL) 3828 output_target = bfd_get_target (ibfd); 3829 3830 obfd = bfd_openw (output_filename, output_target); 3831 if (obfd == NULL) 3832 { 3833 bfd_nonfatal_message (output_filename, NULL, NULL, NULL); 3834 status = 1; 3835 return; 3836 } 3837 /* This is a no-op on non-Coff targets. */ 3838 set_long_section_mode (obfd, ibfd, long_section_names); 3839 3840 if (! copy_object (ibfd, obfd, input_arch)) 3841 status = 1; 3842 3843 /* PR 17512: file: 0f15796a. 3844 If the file could not be copied it may not be in a writeable 3845 state. So use bfd_close_all_done to avoid the possibility of 3846 writing uninitialised data into the file. */ 3847 if (! (status ? bfd_close_all_done (obfd) : bfd_close (obfd))) 3848 { 3849 status = 1; 3850 bfd_nonfatal_message (output_filename, NULL, NULL, NULL); 3851 return; 3852 } 3853 3854 if (!bfd_close (ibfd)) 3855 { 3856 status = 1; 3857 bfd_nonfatal_message (input_filename, NULL, NULL, NULL); 3858 return; 3859 } 3860 } 3861 else 3862 { 3863 bfd_error_type obj_error = bfd_get_error (); 3864 bfd_error_type core_error; 3865 3866 if (bfd_check_format_matches (ibfd, bfd_core, &core_matching)) 3867 { 3868 /* This probably can't happen.. */ 3869 if (obj_error == bfd_error_file_ambiguously_recognized) 3870 free (obj_matching); 3871 goto do_copy; 3872 } 3873 3874 core_error = bfd_get_error (); 3875 /* Report the object error in preference to the core error. */ 3876 if (obj_error != core_error) 3877 bfd_set_error (obj_error); 3878 3879 bfd_nonfatal_message (input_filename, NULL, NULL, NULL); 3880 3881 if (obj_error == bfd_error_file_ambiguously_recognized) 3882 { 3883 list_matching_formats (obj_matching); 3884 free (obj_matching); 3885 } 3886 if (core_error == bfd_error_file_ambiguously_recognized) 3887 { 3888 list_matching_formats (core_matching); 3889 free (core_matching); 3890 } 3891 3892 status = 1; 3893 } 3894} 3895 3896/* Add a name to the section renaming list. */ 3897 3898static void 3899add_section_rename (const char * old_name, const char * new_name, 3900 flagword flags) 3901{ 3902 section_rename * srename; 3903 3904 /* Check for conflicts first. */ 3905 for (srename = section_rename_list; srename != NULL; srename = srename->next) 3906 if (strcmp (srename->old_name, old_name) == 0) 3907 { 3908 /* Silently ignore duplicate definitions. */ 3909 if (strcmp (srename->new_name, new_name) == 0 3910 && srename->flags == flags) 3911 return; 3912 3913 fatal (_("Multiple renames of section %s"), old_name); 3914 } 3915 3916 srename = (section_rename *) xmalloc (sizeof (* srename)); 3917 3918 srename->old_name = old_name; 3919 srename->new_name = new_name; 3920 srename->flags = flags; 3921 srename->next = section_rename_list; 3922 3923 section_rename_list = srename; 3924} 3925 3926/* Check the section rename list for a new name of the input section 3927 called OLD_NAME. Returns the new name if one is found and sets 3928 RETURNED_FLAGS if non-NULL to the flags to be used for this section. */ 3929 3930static const char * 3931find_section_rename (const char *old_name, flagword *returned_flags) 3932{ 3933 const section_rename *srename; 3934 3935 for (srename = section_rename_list; srename != NULL; srename = srename->next) 3936 if (strcmp (srename->old_name, old_name) == 0) 3937 { 3938 if (returned_flags != NULL && srename->flags != (flagword) -1) 3939 *returned_flags = srename->flags; 3940 3941 return srename->new_name; 3942 } 3943 3944 return old_name; 3945} 3946 3947/* Once each of the sections is copied, we may still need to do some 3948 finalization work for private section headers. Do that here. */ 3949 3950static void 3951setup_bfd_headers (bfd *ibfd, bfd *obfd) 3952{ 3953 /* Allow the BFD backend to copy any private data it understands 3954 from the input section to the output section. */ 3955 if (! bfd_copy_private_header_data (ibfd, obfd)) 3956 { 3957 status = 1; 3958 bfd_nonfatal_message (NULL, ibfd, NULL, 3959 _("error in private header data")); 3960 return; 3961 } 3962 3963 /* All went well. */ 3964 return; 3965} 3966 3967/* Create a section in OBFD with the same 3968 name and attributes as ISECTION in IBFD. */ 3969 3970static void 3971setup_section (bfd *ibfd, sec_ptr isection, void *obfdarg) 3972{ 3973 bfd *obfd = (bfd *) obfdarg; 3974 struct section_list *p; 3975 sec_ptr osection; 3976 bfd_size_type size; 3977 bfd_vma vma; 3978 bfd_vma lma; 3979 flagword flags; 3980 const char *err; 3981 const char * name; 3982 const char * new_name; 3983 char *prefix = NULL; 3984 bfd_boolean make_nobits; 3985 unsigned int alignment; 3986 3987 if (is_strip_section (ibfd, isection)) 3988 return; 3989 3990 /* Get the, possibly new, name of the output section. */ 3991 name = bfd_section_name (isection); 3992 flags = bfd_section_flags (isection); 3993 if (bfd_get_flavour (ibfd) != bfd_get_flavour (obfd)) 3994 { 3995 flags &= bfd_applicable_section_flags (ibfd); 3996 flags &= bfd_applicable_section_flags (obfd); 3997 } 3998 new_name = find_section_rename (name, &flags); 3999 if (new_name != name) 4000 { 4001 name = new_name; 4002 flags = check_new_section_flags (flags, obfd, name); 4003 } 4004 4005 /* Prefix sections. */ 4006 if (prefix_alloc_sections_string 4007 && (bfd_section_flags (isection) & SEC_ALLOC) != 0) 4008 prefix = prefix_alloc_sections_string; 4009 else if (prefix_sections_string) 4010 prefix = prefix_sections_string; 4011 4012 if (prefix) 4013 { 4014 char *n; 4015 4016 n = (char *) xmalloc (strlen (prefix) + strlen (name) + 1); 4017 strcpy (n, prefix); 4018 strcat (n, name); 4019 name = n; 4020 } 4021 4022 make_nobits = FALSE; 4023 4024 p = find_section_list (bfd_section_name (isection), FALSE, 4025 SECTION_CONTEXT_SET_FLAGS); 4026 if (p != NULL) 4027 { 4028 flags = p->flags | (flags & (SEC_HAS_CONTENTS | SEC_RELOC)); 4029 flags = check_new_section_flags (flags, obfd, bfd_section_name (isection)); 4030 } 4031 else if (strip_symbols == STRIP_NONDEBUG 4032 && (flags & (SEC_ALLOC | SEC_GROUP)) != 0 4033 && !is_nondebug_keep_contents_section (ibfd, isection)) 4034 { 4035 flags &= ~(SEC_HAS_CONTENTS | SEC_LOAD | SEC_GROUP); 4036 if (bfd_get_flavour (obfd) == bfd_target_elf_flavour) 4037 { 4038 make_nobits = TRUE; 4039 4040 /* Twiddle the input section flags so that it seems to 4041 elf.c:copy_private_bfd_data that section flags have not 4042 changed between input and output sections. This hack 4043 prevents wholesale rewriting of the program headers. */ 4044 isection->flags &= ~(SEC_HAS_CONTENTS | SEC_LOAD | SEC_GROUP); 4045 } 4046 } 4047 4048 osection = bfd_make_section_anyway_with_flags (obfd, name, flags); 4049 4050 if (osection == NULL) 4051 { 4052 err = _("failed to create output section"); 4053 goto loser; 4054 } 4055 4056 if (make_nobits) 4057 elf_section_type (osection) = SHT_NOBITS; 4058 4059 size = bfd_section_size (isection); 4060 size = bfd_convert_section_size (ibfd, isection, obfd, size); 4061 if (copy_byte >= 0) 4062 size = (size + interleave - 1) / interleave * copy_width; 4063 else if (extract_symbol) 4064 size = 0; 4065 if (!bfd_set_section_size (osection, size)) 4066 { 4067 err = _("failed to set size"); 4068 goto loser; 4069 } 4070 4071 vma = bfd_section_vma (isection); 4072 p = find_section_list (bfd_section_name (isection), FALSE, 4073 SECTION_CONTEXT_ALTER_VMA | SECTION_CONTEXT_SET_VMA); 4074 if (p != NULL) 4075 { 4076 if (p->context & SECTION_CONTEXT_SET_VMA) 4077 vma = p->vma_val; 4078 else 4079 vma += p->vma_val; 4080 } 4081 else 4082 vma += change_section_address; 4083 4084 if (!bfd_set_section_vma (osection, vma)) 4085 { 4086 err = _("failed to set vma"); 4087 goto loser; 4088 } 4089 4090 lma = isection->lma; 4091 p = find_section_list (bfd_section_name (isection), FALSE, 4092 SECTION_CONTEXT_ALTER_LMA | SECTION_CONTEXT_SET_LMA); 4093 if (p != NULL) 4094 { 4095 if (p->context & SECTION_CONTEXT_ALTER_LMA) 4096 lma += p->lma_val; 4097 else 4098 lma = p->lma_val; 4099 } 4100 else 4101 lma += change_section_address; 4102 4103 osection->lma = lma; 4104 4105 p = find_section_list (bfd_section_name (isection), FALSE, 4106 SECTION_CONTEXT_SET_ALIGNMENT); 4107 if (p != NULL) 4108 alignment = p->alignment; 4109 else 4110 alignment = bfd_section_alignment (isection); 4111 4112 /* FIXME: This is probably not enough. If we change the LMA we 4113 may have to recompute the header for the file as well. */ 4114 if (!bfd_set_section_alignment (osection, alignment)) 4115 { 4116 err = _("failed to set alignment"); 4117 goto loser; 4118 } 4119 4120 /* Copy merge entity size. */ 4121 osection->entsize = isection->entsize; 4122 4123 /* Copy compress status. */ 4124 osection->compress_status = isection->compress_status; 4125 4126 /* This used to be mangle_section; we do here to avoid using 4127 bfd_get_section_by_name since some formats allow multiple 4128 sections with the same name. */ 4129 isection->output_section = osection; 4130 isection->output_offset = 0; 4131 4132 if ((isection->flags & SEC_GROUP) != 0) 4133 { 4134 asymbol *gsym = group_signature (isection); 4135 4136 if (gsym != NULL) 4137 { 4138 gsym->flags |= BSF_KEEP; 4139 if (bfd_get_flavour (ibfd) == bfd_target_elf_flavour) 4140 elf_group_id (isection) = gsym; 4141 } 4142 } 4143 4144 /* Allow the BFD backend to copy any private data it understands 4145 from the input section to the output section. */ 4146 if (!bfd_copy_private_section_data (ibfd, isection, obfd, osection)) 4147 { 4148 err = _("failed to copy private data"); 4149 goto loser; 4150 } 4151 4152 /* All went well. */ 4153 return; 4154 4155 loser: 4156 status = 1; 4157 bfd_nonfatal_message (NULL, obfd, osection, err); 4158} 4159 4160/* Return TRUE if input section ISECTION should be skipped. */ 4161 4162static bfd_boolean 4163skip_section (bfd *ibfd, sec_ptr isection, bfd_boolean skip_copy) 4164{ 4165 sec_ptr osection; 4166 bfd_size_type size; 4167 flagword flags; 4168 4169 /* If we have already failed earlier on, 4170 do not keep on generating complaints now. */ 4171 if (status != 0) 4172 return TRUE; 4173 4174 if (extract_symbol) 4175 return TRUE; 4176 4177 if (is_strip_section (ibfd, isection)) 4178 return TRUE; 4179 4180 if (is_update_section (ibfd, isection)) 4181 return TRUE; 4182 4183 /* When merging a note section we skip the copying of the contents, 4184 but not the copying of the relocs associated with the contents. */ 4185 if (skip_copy && is_mergeable_note_section (ibfd, isection)) 4186 return TRUE; 4187 4188 flags = bfd_section_flags (isection); 4189 if ((flags & SEC_GROUP) != 0) 4190 return TRUE; 4191 4192 osection = isection->output_section; 4193 size = bfd_section_size (isection); 4194 4195 if (size == 0 || osection == 0) 4196 return TRUE; 4197 4198 return FALSE; 4199} 4200 4201/* Add section SECTION_PATTERN to the list of sections that will have their 4202 relocations removed. */ 4203 4204static void 4205handle_remove_relocations_option (const char *section_pattern) 4206{ 4207 find_section_list (section_pattern, TRUE, SECTION_CONTEXT_REMOVE_RELOCS); 4208} 4209 4210/* Return TRUE if ISECTION from IBFD should have its relocations removed, 4211 otherwise return FALSE. If the user has requested that relocations be 4212 removed from a section that does not have relocations then this 4213 function will still return TRUE. */ 4214 4215static bfd_boolean 4216discard_relocations (bfd *ibfd ATTRIBUTE_UNUSED, asection *isection) 4217{ 4218 return (find_section_list (bfd_section_name (isection), FALSE, 4219 SECTION_CONTEXT_REMOVE_RELOCS) != NULL); 4220} 4221 4222/* Wrapper for dealing with --remove-section (-R) command line arguments. 4223 A special case is detected here, if the user asks to remove a relocation 4224 section (one starting with ".rela" or ".rel") then this removal must 4225 be done using a different technique in a relocatable object. */ 4226 4227static void 4228handle_remove_section_option (const char *section_pattern) 4229{ 4230 find_section_list (section_pattern, TRUE, SECTION_CONTEXT_REMOVE); 4231 if (strncmp (section_pattern, ".rel", 4) == 0) 4232 { 4233 section_pattern += 4; 4234 if (*section_pattern == 'a') 4235 section_pattern++; 4236 if (*section_pattern) 4237 handle_remove_relocations_option (section_pattern); 4238 } 4239 sections_removed = TRUE; 4240} 4241 4242/* Copy relocations in input section ISECTION of IBFD to an output 4243 section with the same name in OBFDARG. If stripping then don't 4244 copy any relocation info. */ 4245 4246static void 4247copy_relocations_in_section (bfd *ibfd, sec_ptr isection, void *obfdarg) 4248{ 4249 bfd *obfd = (bfd *) obfdarg; 4250 long relsize; 4251 arelent **relpp; 4252 long relcount; 4253 sec_ptr osection; 4254 4255 if (skip_section (ibfd, isection, FALSE)) 4256 return; 4257 4258 osection = isection->output_section; 4259 4260 /* Core files and DWO files do not need to be relocated. */ 4261 if (bfd_get_format (obfd) == bfd_core 4262 || strip_symbols == STRIP_NONDWO 4263 || discard_relocations (ibfd, isection)) 4264 relsize = 0; 4265 else 4266 { 4267 relsize = bfd_get_reloc_upper_bound (ibfd, isection); 4268 4269 if (relsize < 0) 4270 { 4271 /* Do not complain if the target does not support relocations. */ 4272 if (relsize == -1 && bfd_get_error () == bfd_error_invalid_operation) 4273 relsize = 0; 4274 else 4275 { 4276 status = 1; 4277 bfd_nonfatal_message (NULL, ibfd, isection, NULL); 4278 return; 4279 } 4280 } 4281 } 4282 4283 if (relsize == 0) 4284 { 4285 bfd_set_reloc (obfd, osection, NULL, 0); 4286 osection->flags &= ~SEC_RELOC; 4287 } 4288 else 4289 { 4290 if (isection->orelocation != NULL) 4291 { 4292 /* Some other function has already set up the output relocs 4293 for us, so scan those instead of the default relocs. */ 4294 relcount = isection->reloc_count; 4295 relpp = isection->orelocation; 4296 } 4297 else 4298 { 4299 relpp = (arelent **) xmalloc (relsize); 4300 relcount = bfd_canonicalize_reloc (ibfd, isection, relpp, isympp); 4301 if (relcount < 0) 4302 { 4303 status = 1; 4304 bfd_nonfatal_message (NULL, ibfd, isection, 4305 _("relocation count is negative")); 4306 free (relpp); 4307 return; 4308 } 4309 } 4310 4311 if (strip_symbols == STRIP_ALL) 4312 { 4313 /* Remove relocations which are not in 4314 keep_strip_specific_list. */ 4315 arelent **temp_relpp; 4316 long temp_relcount = 0; 4317 long i; 4318 4319 temp_relpp = (arelent **) xmalloc (relsize); 4320 for (i = 0; i < relcount; i++) 4321 { 4322 /* PR 17512: file: 9e907e0c. */ 4323 if (relpp[i]->sym_ptr_ptr 4324 /* PR 20096 */ 4325 && * relpp[i]->sym_ptr_ptr) 4326 if (is_specified_symbol (bfd_asymbol_name (*relpp[i]->sym_ptr_ptr), 4327 keep_specific_htab)) 4328 temp_relpp [temp_relcount++] = relpp [i]; 4329 } 4330 relcount = temp_relcount; 4331 if (relpp != isection->orelocation) 4332 free (relpp); 4333 relpp = temp_relpp; 4334 } 4335 4336 bfd_set_reloc (obfd, osection, relcount == 0 ? NULL : relpp, relcount); 4337 if (relcount == 0) 4338 { 4339 osection->flags &= ~SEC_RELOC; 4340 if (relpp != isection->orelocation) 4341 free (relpp); 4342 } 4343 } 4344} 4345 4346/* Copy the data of input section ISECTION of IBFD 4347 to an output section with the same name in OBFD. */ 4348 4349static void 4350copy_section (bfd *ibfd, sec_ptr isection, void *obfdarg) 4351{ 4352 bfd *obfd = (bfd *) obfdarg; 4353 struct section_list *p; 4354 sec_ptr osection; 4355 bfd_size_type size; 4356 4357 if (skip_section (ibfd, isection, TRUE)) 4358 return; 4359 4360 osection = isection->output_section; 4361 /* The output SHF_COMPRESSED section size is different from input if 4362 ELF classes of input and output aren't the same. We can't use 4363 the output section size since --interleave will shrink the output 4364 section. Size will be updated if the section is converted. */ 4365 size = bfd_section_size (isection); 4366 4367 if (bfd_section_flags (isection) & SEC_HAS_CONTENTS 4368 && bfd_section_flags (osection) & SEC_HAS_CONTENTS) 4369 { 4370 bfd_byte *memhunk = NULL; 4371 4372 if (!bfd_get_full_section_contents (ibfd, isection, &memhunk) 4373 || !bfd_convert_section_contents (ibfd, isection, obfd, 4374 &memhunk, &size)) 4375 { 4376 status = 1; 4377 bfd_nonfatal_message (NULL, ibfd, isection, NULL); 4378 free (memhunk); 4379 return; 4380 } 4381 4382 if (reverse_bytes) 4383 { 4384 /* We don't handle leftover bytes (too many possible behaviors, 4385 and we don't know what the user wants). The section length 4386 must be a multiple of the number of bytes to swap. */ 4387 if ((size % reverse_bytes) == 0) 4388 { 4389 unsigned long i, j; 4390 bfd_byte b; 4391 4392 for (i = 0; i < size; i += reverse_bytes) 4393 for (j = 0; j < (unsigned long)(reverse_bytes / 2); j++) 4394 { 4395 bfd_byte *m = (bfd_byte *) memhunk; 4396 4397 b = m[i + j]; 4398 m[i + j] = m[(i + reverse_bytes) - (j + 1)]; 4399 m[(i + reverse_bytes) - (j + 1)] = b; 4400 } 4401 } 4402 else 4403 /* User must pad the section up in order to do this. */ 4404 fatal (_("cannot reverse bytes: length of section %s must be evenly divisible by %d"), 4405 bfd_section_name (isection), reverse_bytes); 4406 } 4407 4408 if (copy_byte >= 0) 4409 { 4410 /* Keep only every `copy_byte'th byte in MEMHUNK. */ 4411 char *from = (char *) memhunk + copy_byte; 4412 char *to = (char *) memhunk; 4413 char *end = (char *) memhunk + size; 4414 int i; 4415 4416 /* If the section address is not exactly divisible by the interleave, 4417 then we must bias the from address. If the copy_byte is less than 4418 the bias, then we must skip forward one interleave, and increment 4419 the final lma. */ 4420 int extra = isection->lma % interleave; 4421 from -= extra; 4422 if (copy_byte < extra) 4423 from += interleave; 4424 4425 for (; from < end; from += interleave) 4426 for (i = 0; i < copy_width; i++) 4427 { 4428 if (&from[i] >= end) 4429 break; 4430 *to++ = from[i]; 4431 } 4432 4433 size = (size + interleave - 1 - copy_byte) / interleave * copy_width; 4434 osection->lma /= interleave; 4435 if (copy_byte < extra) 4436 osection->lma++; 4437 } 4438 4439 if (!bfd_set_section_contents (obfd, osection, memhunk, 0, size)) 4440 { 4441 status = 1; 4442 bfd_nonfatal_message (NULL, obfd, osection, NULL); 4443 free (memhunk); 4444 return; 4445 } 4446 free (memhunk); 4447 } 4448 else if ((p = find_section_list (bfd_section_name (isection), 4449 FALSE, SECTION_CONTEXT_SET_FLAGS)) != NULL 4450 && (p->flags & SEC_HAS_CONTENTS) != 0) 4451 { 4452 void *memhunk = xmalloc (size); 4453 4454 /* We don't permit the user to turn off the SEC_HAS_CONTENTS 4455 flag--they can just remove the section entirely and add it 4456 back again. However, we do permit them to turn on the 4457 SEC_HAS_CONTENTS flag, and take it to mean that the section 4458 contents should be zeroed out. */ 4459 4460 memset (memhunk, 0, size); 4461 if (! bfd_set_section_contents (obfd, osection, memhunk, 0, size)) 4462 { 4463 status = 1; 4464 bfd_nonfatal_message (NULL, obfd, osection, NULL); 4465 free (memhunk); 4466 return; 4467 } 4468 free (memhunk); 4469 } 4470} 4471 4472/* Get all the sections. This is used when --gap-fill or --pad-to is 4473 used. */ 4474 4475static void 4476get_sections (bfd *obfd ATTRIBUTE_UNUSED, asection *osection, void *secppparg) 4477{ 4478 asection ***secppp = (asection ***) secppparg; 4479 4480 **secppp = osection; 4481 ++(*secppp); 4482} 4483 4484/* Sort sections by LMA. This is called via qsort, and is used when 4485 --gap-fill or --pad-to is used. We force non loadable or empty 4486 sections to the front, where they are easier to ignore. */ 4487 4488static int 4489compare_section_lma (const void *arg1, const void *arg2) 4490{ 4491 const asection *sec1 = *(const asection **) arg1; 4492 const asection *sec2 = *(const asection **) arg2; 4493 flagword flags1, flags2; 4494 4495 /* Sort non loadable sections to the front. */ 4496 flags1 = sec1->flags; 4497 flags2 = sec2->flags; 4498 if ((flags1 & SEC_HAS_CONTENTS) == 0 4499 || (flags1 & SEC_LOAD) == 0) 4500 { 4501 if ((flags2 & SEC_HAS_CONTENTS) != 0 4502 && (flags2 & SEC_LOAD) != 0) 4503 return -1; 4504 } 4505 else 4506 { 4507 if ((flags2 & SEC_HAS_CONTENTS) == 0 4508 || (flags2 & SEC_LOAD) == 0) 4509 return 1; 4510 } 4511 4512 /* Sort sections by LMA. */ 4513 if (sec1->lma > sec2->lma) 4514 return 1; 4515 if (sec1->lma < sec2->lma) 4516 return -1; 4517 4518 /* Sort sections with the same LMA by size. */ 4519 if (bfd_section_size (sec1) > bfd_section_size (sec2)) 4520 return 1; 4521 if (bfd_section_size (sec1) < bfd_section_size (sec2)) 4522 return -1; 4523 4524 if (sec1->id > sec2->id) 4525 return 1; 4526 if (sec1->id < sec2->id) 4527 return -1; 4528 return 0; 4529} 4530 4531/* Mark all the symbols which will be used in output relocations with 4532 the BSF_KEEP flag so that those symbols will not be stripped. 4533 4534 Ignore relocations which will not appear in the output file. */ 4535 4536static void 4537mark_symbols_used_in_relocations (bfd *ibfd, sec_ptr isection, void *symbolsarg) 4538{ 4539 asymbol **symbols = (asymbol **) symbolsarg; 4540 long relsize; 4541 arelent **relpp; 4542 long relcount, i; 4543 4544 /* Ignore an input section with no corresponding output section. */ 4545 if (isection->output_section == NULL) 4546 return; 4547 4548 relsize = bfd_get_reloc_upper_bound (ibfd, isection); 4549 if (relsize < 0) 4550 { 4551 /* Do not complain if the target does not support relocations. */ 4552 if (relsize == -1 && bfd_get_error () == bfd_error_invalid_operation) 4553 return; 4554 bfd_fatal (bfd_get_filename (ibfd)); 4555 } 4556 4557 if (relsize == 0) 4558 return; 4559 4560 relpp = (arelent **) xmalloc (relsize); 4561 relcount = bfd_canonicalize_reloc (ibfd, isection, relpp, symbols); 4562 if (relcount < 0) 4563 bfd_fatal (bfd_get_filename (ibfd)); 4564 4565 /* Examine each symbol used in a relocation. If it's not one of the 4566 special bfd section symbols, then mark it with BSF_KEEP. */ 4567 for (i = 0; i < relcount; i++) 4568 { 4569 /* See PRs 20923 and 20930 for reproducers for the NULL tests. */ 4570 if (relpp[i]->sym_ptr_ptr != NULL 4571 && * relpp[i]->sym_ptr_ptr != NULL 4572 && *relpp[i]->sym_ptr_ptr != bfd_com_section_ptr->symbol 4573 && *relpp[i]->sym_ptr_ptr != bfd_abs_section_ptr->symbol 4574 && *relpp[i]->sym_ptr_ptr != bfd_und_section_ptr->symbol) 4575 (*relpp[i]->sym_ptr_ptr)->flags |= BSF_KEEP; 4576 } 4577 4578 if (relpp != NULL) 4579 free (relpp); 4580} 4581 4582/* Write out debugging information. */ 4583 4584static bfd_boolean 4585write_debugging_info (bfd *obfd, void *dhandle, 4586 long *symcountp ATTRIBUTE_UNUSED, 4587 asymbol ***symppp ATTRIBUTE_UNUSED) 4588{ 4589 if (bfd_get_flavour (obfd) == bfd_target_coff_flavour 4590 || bfd_get_flavour (obfd) == bfd_target_elf_flavour) 4591 { 4592 bfd_byte *syms, *strings = NULL; 4593 bfd_size_type symsize, stringsize; 4594 asection *stabsec, *stabstrsec; 4595 flagword flags; 4596 4597 if (! write_stabs_in_sections_debugging_info (obfd, dhandle, &syms, 4598 &symsize, &strings, 4599 &stringsize)) 4600 return FALSE; 4601 4602 flags = SEC_HAS_CONTENTS | SEC_READONLY | SEC_DEBUGGING; 4603 stabsec = bfd_make_section_with_flags (obfd, ".stab", flags); 4604 stabstrsec = bfd_make_section_with_flags (obfd, ".stabstr", flags); 4605 if (stabsec == NULL 4606 || stabstrsec == NULL 4607 || !bfd_set_section_size (stabsec, symsize) 4608 || !bfd_set_section_size (stabstrsec, stringsize) 4609 || !bfd_set_section_alignment (stabsec, 2) 4610 || !bfd_set_section_alignment (stabstrsec, 0)) 4611 { 4612 bfd_nonfatal_message (NULL, obfd, NULL, 4613 _("can't create debugging section")); 4614 free (strings); 4615 return FALSE; 4616 } 4617 4618 /* We can get away with setting the section contents now because 4619 the next thing the caller is going to do is copy over the 4620 real sections. We may someday have to split the contents 4621 setting out of this function. */ 4622 if (! bfd_set_section_contents (obfd, stabsec, syms, 0, symsize) 4623 || ! bfd_set_section_contents (obfd, stabstrsec, strings, 0, 4624 stringsize)) 4625 { 4626 bfd_nonfatal_message (NULL, obfd, NULL, 4627 _("can't set debugging section contents")); 4628 free (strings); 4629 return FALSE; 4630 } 4631 4632 return TRUE; 4633 } 4634 4635 bfd_nonfatal_message (NULL, obfd, NULL, 4636 _("don't know how to write debugging information for %s"), 4637 bfd_get_target (obfd)); 4638 return FALSE; 4639} 4640 4641/* If neither -D nor -U was specified explicitly, 4642 then use the configured default. */ 4643static void 4644default_deterministic (void) 4645{ 4646 if (deterministic < 0) 4647 deterministic = DEFAULT_AR_DETERMINISTIC; 4648} 4649 4650static int 4651strip_main (int argc, char *argv[]) 4652{ 4653 char *input_target = NULL; 4654 char *output_target = NULL; 4655 bfd_boolean show_version = FALSE; 4656 bfd_boolean formats_info = FALSE; 4657 int c; 4658 int i; 4659 char *output_file = NULL; 4660 bfd_boolean merge_notes_set = FALSE; 4661 4662 while ((c = getopt_long (argc, argv, "I:O:F:K:MN:R:o:sSpdgxXHhVvwDU", 4663 strip_options, (int *) 0)) != EOF) 4664 { 4665 switch (c) 4666 { 4667 case 'I': 4668 input_target = optarg; 4669 break; 4670 case 'O': 4671 output_target = optarg; 4672 break; 4673 case 'F': 4674 input_target = output_target = optarg; 4675 break; 4676 case 'R': 4677 handle_remove_section_option (optarg); 4678 break; 4679 case OPTION_KEEP_SECTION: 4680 find_section_list (optarg, TRUE, SECTION_CONTEXT_KEEP); 4681 break; 4682 case OPTION_REMOVE_RELOCS: 4683 handle_remove_relocations_option (optarg); 4684 break; 4685 case 's': 4686 strip_symbols = STRIP_ALL; 4687 break; 4688 case 'S': 4689 case 'g': 4690 case 'd': /* Historic BSD alias for -g. Used by early NetBSD. */ 4691 strip_symbols = STRIP_DEBUG; 4692 break; 4693 case OPTION_STRIP_DWO: 4694 strip_symbols = STRIP_DWO; 4695 break; 4696 case OPTION_STRIP_UNNEEDED: 4697 strip_symbols = STRIP_UNNEEDED; 4698 break; 4699 case 'K': 4700 add_specific_symbol (optarg, keep_specific_htab); 4701 break; 4702 case 'M': 4703 merge_notes = TRUE; 4704 merge_notes_set = TRUE; 4705 break; 4706 case OPTION_NO_MERGE_NOTES: 4707 merge_notes = FALSE; 4708 merge_notes_set = TRUE; 4709 break; 4710 case 'N': 4711 add_specific_symbol (optarg, strip_specific_htab); 4712 break; 4713 case 'o': 4714 output_file = optarg; 4715 break; 4716 case 'p': 4717 preserve_dates = TRUE; 4718 break; 4719 case 'D': 4720 deterministic = TRUE; 4721 break; 4722 case 'U': 4723 deterministic = FALSE; 4724 break; 4725 case 'x': 4726 discard_locals = LOCALS_ALL; 4727 break; 4728 case 'X': 4729 discard_locals = LOCALS_START_L; 4730 break; 4731 case 'v': 4732 verbose = TRUE; 4733 break; 4734 case 'V': 4735 show_version = TRUE; 4736 break; 4737 case OPTION_FORMATS_INFO: 4738 formats_info = TRUE; 4739 break; 4740 case OPTION_ONLY_KEEP_DEBUG: 4741 strip_symbols = STRIP_NONDEBUG; 4742 break; 4743 case OPTION_KEEP_FILE_SYMBOLS: 4744 keep_file_symbols = 1; 4745 break; 4746 case 0: 4747 /* We've been given a long option. */ 4748 break; 4749 case 'w': 4750 wildcard = TRUE; 4751 break; 4752 case 'H': 4753 case 'h': 4754 strip_usage (stdout, 0); 4755 default: 4756 strip_usage (stderr, 1); 4757 } 4758 } 4759 4760 /* If the user has not expressly chosen to merge/not-merge ELF notes 4761 then enable the merging unless we are stripping debug or dwo info. */ 4762 if (! merge_notes_set 4763 && (strip_symbols == STRIP_UNDEF 4764 || strip_symbols == STRIP_ALL 4765 || strip_symbols == STRIP_UNNEEDED 4766 || strip_symbols == STRIP_NONDEBUG 4767 || strip_symbols == STRIP_NONDWO)) 4768 merge_notes = TRUE; 4769 4770 if (formats_info) 4771 { 4772 display_info (); 4773 return 0; 4774 } 4775 4776 if (show_version) 4777 print_version ("strip"); 4778 4779 default_deterministic (); 4780 4781 /* Default is to strip all symbols. */ 4782 if (strip_symbols == STRIP_UNDEF 4783 && discard_locals == LOCALS_UNDEF 4784 && htab_elements (strip_specific_htab) == 0) 4785 strip_symbols = STRIP_ALL; 4786 4787 if (output_target == NULL) 4788 output_target = input_target; 4789 4790 i = optind; 4791 if (i == argc 4792 || (output_file != NULL && (i + 1) < argc)) 4793 strip_usage (stderr, 1); 4794 4795 for (; i < argc; i++) 4796 { 4797 int hold_status = status; 4798 struct stat statbuf; 4799 char *tmpname; 4800 4801 if (get_file_size (argv[i]) < 1) 4802 { 4803 status = 1; 4804 continue; 4805 } 4806 4807 if (preserve_dates) 4808 /* No need to check the return value of stat(). 4809 It has already been checked in get_file_size(). */ 4810 stat (argv[i], &statbuf); 4811 4812 if (output_file == NULL 4813 || filename_cmp (argv[i], output_file) == 0) 4814 tmpname = make_tempname (argv[i]); 4815 else 4816 tmpname = output_file; 4817 4818 if (tmpname == NULL) 4819 { 4820 bfd_nonfatal_message (argv[i], NULL, NULL, 4821 _("could not create temporary file to hold stripped copy")); 4822 status = 1; 4823 continue; 4824 } 4825 4826 status = 0; 4827 copy_file (argv[i], tmpname, input_target, output_target, NULL); 4828 if (status == 0) 4829 { 4830 if (preserve_dates) 4831 set_times (tmpname, &statbuf); 4832 if (output_file != tmpname) 4833 status = (smart_rename (tmpname, 4834 output_file ? output_file : argv[i], 4835 preserve_dates) != 0); 4836 if (status == 0) 4837 status = hold_status; 4838 } 4839 else 4840 unlink_if_ordinary (tmpname); 4841 if (output_file != tmpname) 4842 free (tmpname); 4843 } 4844 4845 return status; 4846} 4847 4848/* Set up PE subsystem. */ 4849 4850static void 4851set_pe_subsystem (const char *s) 4852{ 4853 const char *version, *subsystem; 4854 size_t i; 4855 static const struct 4856 { 4857 const char *name; 4858 const char set_def; 4859 const short value; 4860 } 4861 v[] = 4862 { 4863 { "native", 0, IMAGE_SUBSYSTEM_NATIVE }, 4864 { "windows", 0, IMAGE_SUBSYSTEM_WINDOWS_GUI }, 4865 { "console", 0, IMAGE_SUBSYSTEM_WINDOWS_CUI }, 4866 { "posix", 0, IMAGE_SUBSYSTEM_POSIX_CUI }, 4867 { "wince", 0, IMAGE_SUBSYSTEM_WINDOWS_CE_GUI }, 4868 { "efi-app", 1, IMAGE_SUBSYSTEM_EFI_APPLICATION }, 4869 { "efi-bsd", 1, IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER }, 4870 { "efi-rtd", 1, IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER }, 4871 { "sal-rtd", 1, IMAGE_SUBSYSTEM_SAL_RUNTIME_DRIVER }, 4872 { "xbox", 0, IMAGE_SUBSYSTEM_XBOX } 4873 }; 4874 short value; 4875 char *copy; 4876 int set_def = -1; 4877 4878 /* Check for the presence of a version number. */ 4879 version = strchr (s, ':'); 4880 if (version == NULL) 4881 subsystem = s; 4882 else 4883 { 4884 int len = version - s; 4885 copy = xstrdup (s); 4886 subsystem = copy; 4887 copy[len] = '\0'; 4888 version = copy + 1 + len; 4889 pe_major_subsystem_version = strtoul (version, ©, 0); 4890 if (*copy == '.') 4891 pe_minor_subsystem_version = strtoul (copy + 1, ©, 0); 4892 if (*copy != '\0') 4893 non_fatal (_("%s: bad version in PE subsystem"), s); 4894 } 4895 4896 /* Check for numeric subsystem. */ 4897 value = (short) strtol (subsystem, ©, 0); 4898 if (*copy == '\0') 4899 { 4900 for (i = 0; i < ARRAY_SIZE (v); i++) 4901 if (v[i].value == value) 4902 { 4903 pe_subsystem = value; 4904 set_def = v[i].set_def; 4905 break; 4906 } 4907 } 4908 else 4909 { 4910 /* Search for subsystem by name. */ 4911 for (i = 0; i < ARRAY_SIZE (v); i++) 4912 if (strcmp (subsystem, v[i].name) == 0) 4913 { 4914 pe_subsystem = v[i].value; 4915 set_def = v[i].set_def; 4916 break; 4917 } 4918 } 4919 4920 switch (set_def) 4921 { 4922 case -1: 4923 fatal (_("unknown PE subsystem: %s"), s); 4924 break; 4925 case 0: 4926 break; 4927 default: 4928 if (pe_file_alignment == (bfd_vma) -1) 4929 pe_file_alignment = PE_DEF_FILE_ALIGNMENT; 4930 if (pe_section_alignment == (bfd_vma) -1) 4931 pe_section_alignment = PE_DEF_SECTION_ALIGNMENT; 4932 break; 4933 } 4934 if (s != subsystem) 4935 free ((char *) subsystem); 4936} 4937 4938/* Convert EFI target to PEI target. */ 4939 4940static void 4941convert_efi_target (char *efi) 4942{ 4943 efi[0] = 'p'; 4944 efi[1] = 'e'; 4945 efi[2] = 'i'; 4946 4947 if (strcmp (efi + 4, "ia32") == 0) 4948 { 4949 /* Change ia32 to i386. */ 4950 efi[5]= '3'; 4951 efi[6]= '8'; 4952 efi[7]= '6'; 4953 } 4954 else if (strcmp (efi + 4, "x86_64") == 0) 4955 { 4956 /* Change x86_64 to x86-64. */ 4957 efi[7] = '-'; 4958 } 4959} 4960 4961/* Allocate and return a pointer to a struct section_add, initializing the 4962 structure using ARG, a string in the format "sectionname=filename". 4963 The returned structure will have its next pointer set to NEXT. The 4964 OPTION field is the name of the command line option currently being 4965 parsed, and is only used if an error needs to be reported. */ 4966 4967static struct section_add * 4968init_section_add (const char *arg, 4969 struct section_add *next, 4970 const char *option) 4971{ 4972 struct section_add *pa; 4973 const char *s; 4974 4975 s = strchr (arg, '='); 4976 if (s == NULL) 4977 fatal (_("bad format for %s"), option); 4978 4979 pa = (struct section_add *) xmalloc (sizeof (struct section_add)); 4980 pa->name = xstrndup (arg, s - arg); 4981 pa->filename = s + 1; 4982 pa->next = next; 4983 pa->contents = NULL; 4984 pa->size = 0; 4985 4986 return pa; 4987} 4988 4989/* Load the file specified in PA, allocating memory to hold the file 4990 contents, and store a pointer to the allocated memory in the contents 4991 field of PA. The size field of PA is also updated. All errors call 4992 FATAL. */ 4993 4994static void 4995section_add_load_file (struct section_add *pa) 4996{ 4997 size_t off, alloc; 4998 FILE *f; 4999 5000 /* We don't use get_file_size so that we can do 5001 --add-section .note.GNU_stack=/dev/null 5002 get_file_size doesn't work on /dev/null. */ 5003 5004 f = fopen (pa->filename, FOPEN_RB); 5005 if (f == NULL) 5006 fatal (_("cannot open: %s: %s"), 5007 pa->filename, strerror (errno)); 5008 5009 off = 0; 5010 alloc = 4096; 5011 pa->contents = (bfd_byte *) xmalloc (alloc); 5012 while (!feof (f)) 5013 { 5014 off_t got; 5015 5016 if (off == alloc) 5017 { 5018 alloc <<= 1; 5019 pa->contents = (bfd_byte *) xrealloc (pa->contents, alloc); 5020 } 5021 5022 got = fread (pa->contents + off, 1, alloc - off, f); 5023 if (ferror (f)) 5024 fatal (_("%s: fread failed"), pa->filename); 5025 5026 off += got; 5027 } 5028 5029 pa->size = off; 5030 5031 fclose (f); 5032} 5033 5034static int 5035copy_main (int argc, char *argv[]) 5036{ 5037 char *input_filename = NULL; 5038 char *output_filename = NULL; 5039 char *tmpname; 5040 char *input_target = NULL; 5041 char *output_target = NULL; 5042 bfd_boolean show_version = FALSE; 5043 bfd_boolean change_warn = TRUE; 5044 bfd_boolean formats_info = FALSE; 5045 bfd_boolean use_globalize = FALSE; 5046 bfd_boolean use_keep_global = FALSE; 5047 int c; 5048 struct stat statbuf; 5049 const bfd_arch_info_type *input_arch = NULL; 5050 5051 while ((c = getopt_long (argc, argv, "b:B:i:I:j:K:MN:s:O:d:F:L:G:R:SpgxXHhVvW:wDU", 5052 copy_options, (int *) 0)) != EOF) 5053 { 5054 switch (c) 5055 { 5056 case 'b': 5057 copy_byte = atoi (optarg); 5058 if (copy_byte < 0) 5059 fatal (_("byte number must be non-negative")); 5060 break; 5061 5062 case 'B': 5063 input_arch = bfd_scan_arch (optarg); 5064 if (input_arch == NULL) 5065 fatal (_("architecture %s unknown"), optarg); 5066 break; 5067 5068 case 'i': 5069 if (optarg) 5070 { 5071 interleave = atoi (optarg); 5072 if (interleave < 1) 5073 fatal (_("interleave must be positive")); 5074 } 5075 else 5076 interleave = 4; 5077 break; 5078 5079 case OPTION_INTERLEAVE_WIDTH: 5080 copy_width = atoi (optarg); 5081 if (copy_width < 1) 5082 fatal(_("interleave width must be positive")); 5083 break; 5084 5085 case 'I': 5086 case 's': /* "source" - 'I' is preferred */ 5087 input_target = optarg; 5088 break; 5089 5090 case 'O': 5091 case 'd': /* "destination" - 'O' is preferred */ 5092 output_target = optarg; 5093 break; 5094 5095 case 'F': 5096 input_target = output_target = optarg; 5097 break; 5098 5099 case 'j': 5100 find_section_list (optarg, TRUE, SECTION_CONTEXT_COPY); 5101 sections_copied = TRUE; 5102 break; 5103 5104 case 'R': 5105 handle_remove_section_option (optarg); 5106 break; 5107 5108 case OPTION_KEEP_SECTION: 5109 find_section_list (optarg, TRUE, SECTION_CONTEXT_KEEP); 5110 break; 5111 5112 case OPTION_REMOVE_RELOCS: 5113 handle_remove_relocations_option (optarg); 5114 break; 5115 5116 case 'S': 5117 strip_symbols = STRIP_ALL; 5118 break; 5119 5120 case 'g': 5121 strip_symbols = STRIP_DEBUG; 5122 break; 5123 5124 case OPTION_STRIP_DWO: 5125 strip_symbols = STRIP_DWO; 5126 break; 5127 5128 case OPTION_STRIP_UNNEEDED: 5129 strip_symbols = STRIP_UNNEEDED; 5130 break; 5131 5132 case OPTION_ONLY_KEEP_DEBUG: 5133 strip_symbols = STRIP_NONDEBUG; 5134 break; 5135 5136 case OPTION_KEEP_FILE_SYMBOLS: 5137 keep_file_symbols = 1; 5138 break; 5139 5140 case OPTION_ADD_GNU_DEBUGLINK: 5141 long_section_names = ENABLE ; 5142 gnu_debuglink_filename = optarg; 5143 break; 5144 5145 case 'K': 5146 add_specific_symbol (optarg, keep_specific_htab); 5147 break; 5148 5149 case 'M': 5150 merge_notes = TRUE; 5151 break; 5152 case OPTION_NO_MERGE_NOTES: 5153 merge_notes = FALSE; 5154 break; 5155 5156 case 'N': 5157 add_specific_symbol (optarg, strip_specific_htab); 5158 break; 5159 5160 case OPTION_STRIP_UNNEEDED_SYMBOL: 5161 add_specific_symbol (optarg, strip_unneeded_htab); 5162 break; 5163 5164 case 'L': 5165 add_specific_symbol (optarg, localize_specific_htab); 5166 break; 5167 5168 case OPTION_GLOBALIZE_SYMBOL: 5169 use_globalize = TRUE; 5170 add_specific_symbol (optarg, globalize_specific_htab); 5171 break; 5172 5173 case 'G': 5174 use_keep_global = TRUE; 5175 add_specific_symbol (optarg, keepglobal_specific_htab); 5176 break; 5177 5178 case 'W': 5179 add_specific_symbol (optarg, weaken_specific_htab); 5180 break; 5181 5182 case 'p': 5183 preserve_dates = TRUE; 5184 break; 5185 5186 case 'D': 5187 deterministic = TRUE; 5188 break; 5189 5190 case 'U': 5191 deterministic = FALSE; 5192 break; 5193 5194 case 'w': 5195 wildcard = TRUE; 5196 break; 5197 5198 case 'x': 5199 discard_locals = LOCALS_ALL; 5200 break; 5201 5202 case 'X': 5203 discard_locals = LOCALS_START_L; 5204 break; 5205 5206 case 'v': 5207 verbose = TRUE; 5208 break; 5209 5210 case 'V': 5211 show_version = TRUE; 5212 break; 5213 5214 case OPTION_FORMATS_INFO: 5215 formats_info = TRUE; 5216 break; 5217 5218 case OPTION_WEAKEN: 5219 weaken = TRUE; 5220 break; 5221 5222 case OPTION_ADD_SECTION: 5223 add_sections = init_section_add (optarg, add_sections, 5224 "--add-section"); 5225 section_add_load_file (add_sections); 5226 break; 5227 5228 case OPTION_UPDATE_SECTION: 5229 update_sections = init_section_add (optarg, update_sections, 5230 "--update-section"); 5231 section_add_load_file (update_sections); 5232 break; 5233 5234 case OPTION_DUMP_SECTION: 5235 dump_sections = init_section_add (optarg, dump_sections, 5236 "--dump-section"); 5237 break; 5238 5239 case OPTION_ADD_SYMBOL: 5240 { 5241 char *s, *t; 5242 struct addsym_node *newsym = xmalloc (sizeof *newsym); 5243 5244 newsym->next = NULL; 5245 s = strchr (optarg, '='); 5246 if (s == NULL) 5247 fatal (_("bad format for %s"), "--add-symbol"); 5248 t = strchr (s + 1, ':'); 5249 5250 newsym->symdef = xstrndup (optarg, s - optarg); 5251 if (t) 5252 { 5253 newsym->section = xstrndup (s + 1, t - (s + 1)); 5254 newsym->symval = strtol (t + 1, NULL, 0); 5255 } 5256 else 5257 { 5258 newsym->section = NULL; 5259 newsym->symval = strtol (s + 1, NULL, 0); 5260 t = s; 5261 } 5262 5263 t = strchr (t + 1, ','); 5264 newsym->othersym = NULL; 5265 if (t) 5266 newsym->flags = parse_symflags (t+1, &newsym->othersym); 5267 else 5268 newsym->flags = BSF_GLOBAL; 5269 5270 /* Keep 'othersym' symbols at the front of the list. */ 5271 if (newsym->othersym) 5272 { 5273 newsym->next = add_sym_list; 5274 if (!add_sym_list) 5275 add_sym_tail = &newsym->next; 5276 add_sym_list = newsym; 5277 } 5278 else 5279 { 5280 *add_sym_tail = newsym; 5281 add_sym_tail = &newsym->next; 5282 } 5283 add_symbols++; 5284 } 5285 break; 5286 5287 case OPTION_CHANGE_START: 5288 change_start = parse_vma (optarg, "--change-start"); 5289 break; 5290 5291 case OPTION_CHANGE_SECTION_ADDRESS: 5292 case OPTION_CHANGE_SECTION_LMA: 5293 case OPTION_CHANGE_SECTION_VMA: 5294 { 5295 struct section_list * p; 5296 unsigned int context = 0; 5297 const char *s; 5298 int len; 5299 char *name; 5300 char *option = NULL; 5301 bfd_vma val; 5302 5303 switch (c) 5304 { 5305 case OPTION_CHANGE_SECTION_ADDRESS: 5306 option = "--change-section-address"; 5307 context = SECTION_CONTEXT_ALTER_LMA | SECTION_CONTEXT_ALTER_VMA; 5308 break; 5309 case OPTION_CHANGE_SECTION_LMA: 5310 option = "--change-section-lma"; 5311 context = SECTION_CONTEXT_ALTER_LMA; 5312 break; 5313 case OPTION_CHANGE_SECTION_VMA: 5314 option = "--change-section-vma"; 5315 context = SECTION_CONTEXT_ALTER_VMA; 5316 break; 5317 } 5318 5319 s = strchr (optarg, '='); 5320 if (s == NULL) 5321 { 5322 s = strchr (optarg, '+'); 5323 if (s == NULL) 5324 { 5325 s = strchr (optarg, '-'); 5326 if (s == NULL) 5327 fatal (_("bad format for %s"), option); 5328 } 5329 } 5330 else 5331 { 5332 /* Correct the context. */ 5333 switch (c) 5334 { 5335 case OPTION_CHANGE_SECTION_ADDRESS: 5336 context = SECTION_CONTEXT_SET_LMA | SECTION_CONTEXT_SET_VMA; 5337 break; 5338 case OPTION_CHANGE_SECTION_LMA: 5339 context = SECTION_CONTEXT_SET_LMA; 5340 break; 5341 case OPTION_CHANGE_SECTION_VMA: 5342 context = SECTION_CONTEXT_SET_VMA; 5343 break; 5344 } 5345 } 5346 5347 len = s - optarg; 5348 name = (char *) xmalloc (len + 1); 5349 strncpy (name, optarg, len); 5350 name[len] = '\0'; 5351 5352 p = find_section_list (name, TRUE, context); 5353 5354 val = parse_vma (s + 1, option); 5355 if (*s == '-') 5356 val = - val; 5357 5358 switch (c) 5359 { 5360 case OPTION_CHANGE_SECTION_ADDRESS: 5361 p->vma_val = val; 5362 /* Fall through. */ 5363 5364 case OPTION_CHANGE_SECTION_LMA: 5365 p->lma_val = val; 5366 break; 5367 5368 case OPTION_CHANGE_SECTION_VMA: 5369 p->vma_val = val; 5370 break; 5371 } 5372 } 5373 break; 5374 5375 case OPTION_CHANGE_ADDRESSES: 5376 change_section_address = parse_vma (optarg, "--change-addresses"); 5377 change_start = change_section_address; 5378 break; 5379 5380 case OPTION_CHANGE_WARNINGS: 5381 change_warn = TRUE; 5382 break; 5383 5384 case OPTION_CHANGE_LEADING_CHAR: 5385 change_leading_char = TRUE; 5386 break; 5387 5388 case OPTION_COMPRESS_DEBUG_SECTIONS: 5389 if (optarg) 5390 { 5391 if (strcasecmp (optarg, "none") == 0) 5392 do_debug_sections = decompress; 5393 else if (strcasecmp (optarg, "zlib") == 0) 5394 do_debug_sections = compress_zlib; 5395 else if (strcasecmp (optarg, "zlib-gnu") == 0) 5396 do_debug_sections = compress_gnu_zlib; 5397 else if (strcasecmp (optarg, "zlib-gabi") == 0) 5398 do_debug_sections = compress_gabi_zlib; 5399 else 5400 fatal (_("unrecognized --compress-debug-sections type `%s'"), 5401 optarg); 5402 } 5403 else 5404 do_debug_sections = compress; 5405 break; 5406 5407 case OPTION_DEBUGGING: 5408 convert_debugging = TRUE; 5409 break; 5410 5411 case OPTION_DECOMPRESS_DEBUG_SECTIONS: 5412 do_debug_sections = decompress; 5413 break; 5414 5415 case OPTION_ELF_STT_COMMON: 5416 if (strcasecmp (optarg, "yes") == 0) 5417 do_elf_stt_common = elf_stt_common; 5418 else if (strcasecmp (optarg, "no") == 0) 5419 do_elf_stt_common = no_elf_stt_common; 5420 else 5421 fatal (_("unrecognized --elf-stt-common= option `%s'"), 5422 optarg); 5423 break; 5424 5425 case OPTION_GAP_FILL: 5426 { 5427 bfd_vma gap_fill_vma; 5428 5429 gap_fill_vma = parse_vma (optarg, "--gap-fill"); 5430 gap_fill = (bfd_byte) gap_fill_vma; 5431 if ((bfd_vma) gap_fill != gap_fill_vma) 5432 { 5433 char buff[20]; 5434 5435 sprintf_vma (buff, gap_fill_vma); 5436 5437 non_fatal (_("Warning: truncating gap-fill from 0x%s to 0x%x"), 5438 buff, gap_fill); 5439 } 5440 gap_fill_set = TRUE; 5441 } 5442 break; 5443 5444 case OPTION_NO_CHANGE_WARNINGS: 5445 change_warn = FALSE; 5446 break; 5447 5448 case OPTION_PAD_TO: 5449 pad_to = parse_vma (optarg, "--pad-to"); 5450 pad_to_set = TRUE; 5451 break; 5452 5453 case OPTION_REMOVE_LEADING_CHAR: 5454 remove_leading_char = TRUE; 5455 break; 5456 5457 case OPTION_REDEFINE_SYM: 5458 { 5459 /* Insert this redefinition onto redefine_specific_htab. */ 5460 5461 int len; 5462 const char *s; 5463 const char *nextarg; 5464 char *source, *target; 5465 5466 s = strchr (optarg, '='); 5467 if (s == NULL) 5468 fatal (_("bad format for %s"), "--redefine-sym"); 5469 5470 len = s - optarg; 5471 source = (char *) xmalloc (len + 1); 5472 strncpy (source, optarg, len); 5473 source[len] = '\0'; 5474 5475 nextarg = s + 1; 5476 len = strlen (nextarg); 5477 target = (char *) xmalloc (len + 1); 5478 strcpy (target, nextarg); 5479 5480 add_redefine_and_check ("--redefine-sym", source, target); 5481 5482 free (source); 5483 free (target); 5484 } 5485 break; 5486 5487 case OPTION_REDEFINE_SYMS: 5488 add_redefine_syms_file (optarg); 5489 break; 5490 5491 case OPTION_SET_SECTION_FLAGS: 5492 { 5493 struct section_list *p; 5494 const char *s; 5495 int len; 5496 char *name; 5497 5498 s = strchr (optarg, '='); 5499 if (s == NULL) 5500 fatal (_("bad format for %s"), "--set-section-flags"); 5501 5502 len = s - optarg; 5503 name = (char *) xmalloc (len + 1); 5504 strncpy (name, optarg, len); 5505 name[len] = '\0'; 5506 5507 p = find_section_list (name, TRUE, SECTION_CONTEXT_SET_FLAGS); 5508 5509 p->flags = parse_flags (s + 1); 5510 } 5511 break; 5512 5513 case OPTION_SET_SECTION_ALIGNMENT: 5514 { 5515 struct section_list *p; 5516 const char *s; 5517 int len; 5518 char *name; 5519 int palign, align; 5520 5521 s = strchr (optarg, '='); 5522 if (s == NULL) 5523 fatal (_("bad format for --set-section-alignment: argument needed")); 5524 5525 align = atoi (s + 1); 5526 if (align <= 0) 5527 fatal (_("bad format for --set-section-alignment: numeric argument needed")); 5528 5529 /* Convert integer alignment into a power-of-two alignment. */ 5530 palign = 0; 5531 while ((align & 1) == 0) 5532 { 5533 align >>= 1; 5534 ++palign; 5535 } 5536 5537 if (align != 1) 5538 /* Number has more than on 1, i.e. wasn't a power of 2. */ 5539 fatal (_("bad format for --set-section-alignment: alignment is not a power of two")); 5540 5541 /* Add the alignment setting to the section list. */ 5542 len = s - optarg; 5543 name = (char *) xmalloc (len + 1); 5544 strncpy (name, optarg, len); 5545 name[len] = '\0'; 5546 5547 p = find_section_list (name, TRUE, SECTION_CONTEXT_SET_ALIGNMENT); 5548 if (p) 5549 p->alignment = palign; 5550 } 5551 break; 5552 5553 case OPTION_RENAME_SECTION: 5554 { 5555 flagword flags; 5556 const char *eq, *fl; 5557 char *old_name; 5558 char *new_name; 5559 unsigned int len; 5560 5561 eq = strchr (optarg, '='); 5562 if (eq == NULL) 5563 fatal (_("bad format for %s"), "--rename-section"); 5564 5565 len = eq - optarg; 5566 if (len == 0) 5567 fatal (_("bad format for %s"), "--rename-section"); 5568 5569 old_name = (char *) xmalloc (len + 1); 5570 strncpy (old_name, optarg, len); 5571 old_name[len] = 0; 5572 5573 eq++; 5574 fl = strchr (eq, ','); 5575 if (fl) 5576 { 5577 flags = parse_flags (fl + 1); 5578 len = fl - eq; 5579 } 5580 else 5581 { 5582 flags = -1; 5583 len = strlen (eq); 5584 } 5585 5586 if (len == 0) 5587 fatal (_("bad format for %s"), "--rename-section"); 5588 5589 new_name = (char *) xmalloc (len + 1); 5590 strncpy (new_name, eq, len); 5591 new_name[len] = 0; 5592 5593 add_section_rename (old_name, new_name, flags); 5594 } 5595 break; 5596 5597 case OPTION_SET_START: 5598 set_start = parse_vma (optarg, "--set-start"); 5599 set_start_set = TRUE; 5600 break; 5601 5602 case OPTION_SREC_LEN: 5603 _bfd_srec_len = parse_vma (optarg, "--srec-len"); 5604 break; 5605 5606 case OPTION_SREC_FORCES3: 5607 _bfd_srec_forceS3 = TRUE; 5608 break; 5609 5610 case OPTION_STRIP_SYMBOLS: 5611 add_specific_symbols (optarg, strip_specific_htab, 5612 &strip_specific_buffer); 5613 break; 5614 5615 case OPTION_STRIP_UNNEEDED_SYMBOLS: 5616 add_specific_symbols (optarg, strip_unneeded_htab, 5617 &strip_unneeded_buffer); 5618 break; 5619 5620 case OPTION_KEEP_SYMBOLS: 5621 add_specific_symbols (optarg, keep_specific_htab, 5622 &keep_specific_buffer); 5623 break; 5624 5625 case OPTION_LOCALIZE_HIDDEN: 5626 localize_hidden = TRUE; 5627 break; 5628 5629 case OPTION_LOCALIZE_SYMBOLS: 5630 add_specific_symbols (optarg, localize_specific_htab, 5631 &localize_specific_buffer); 5632 break; 5633 5634 case OPTION_LONG_SECTION_NAMES: 5635 if (!strcmp ("enable", optarg)) 5636 long_section_names = ENABLE; 5637 else if (!strcmp ("disable", optarg)) 5638 long_section_names = DISABLE; 5639 else if (!strcmp ("keep", optarg)) 5640 long_section_names = KEEP; 5641 else 5642 fatal (_("unknown long section names option '%s'"), optarg); 5643 break; 5644 5645 case OPTION_GLOBALIZE_SYMBOLS: 5646 use_globalize = TRUE; 5647 add_specific_symbols (optarg, globalize_specific_htab, 5648 &globalize_specific_buffer); 5649 break; 5650 5651 case OPTION_KEEPGLOBAL_SYMBOLS: 5652 use_keep_global = TRUE; 5653 add_specific_symbols (optarg, keepglobal_specific_htab, 5654 &keepglobal_specific_buffer); 5655 break; 5656 5657 case OPTION_WEAKEN_SYMBOLS: 5658 add_specific_symbols (optarg, weaken_specific_htab, 5659 &weaken_specific_buffer); 5660 break; 5661 5662 case OPTION_ALT_MACH_CODE: 5663 use_alt_mach_code = strtoul (optarg, NULL, 0); 5664 if (use_alt_mach_code == 0) 5665 fatal (_("unable to parse alternative machine code")); 5666 break; 5667 5668 case OPTION_PREFIX_SYMBOLS: 5669 prefix_symbols_string = optarg; 5670 break; 5671 5672 case OPTION_PREFIX_SECTIONS: 5673 prefix_sections_string = optarg; 5674 break; 5675 5676 case OPTION_PREFIX_ALLOC_SECTIONS: 5677 prefix_alloc_sections_string = optarg; 5678 break; 5679 5680 case OPTION_READONLY_TEXT: 5681 bfd_flags_to_set |= WP_TEXT; 5682 bfd_flags_to_clear &= ~WP_TEXT; 5683 break; 5684 5685 case OPTION_WRITABLE_TEXT: 5686 bfd_flags_to_clear |= WP_TEXT; 5687 bfd_flags_to_set &= ~WP_TEXT; 5688 break; 5689 5690 case OPTION_PURE: 5691 bfd_flags_to_set |= D_PAGED; 5692 bfd_flags_to_clear &= ~D_PAGED; 5693 break; 5694 5695 case OPTION_IMPURE: 5696 bfd_flags_to_clear |= D_PAGED; 5697 bfd_flags_to_set &= ~D_PAGED; 5698 break; 5699 5700 case OPTION_EXTRACT_DWO: 5701 strip_symbols = STRIP_NONDWO; 5702 break; 5703 5704 case OPTION_EXTRACT_SYMBOL: 5705 extract_symbol = TRUE; 5706 break; 5707 5708 case OPTION_REVERSE_BYTES: 5709 { 5710 int prev = reverse_bytes; 5711 5712 reverse_bytes = atoi (optarg); 5713 if ((reverse_bytes <= 0) || ((reverse_bytes % 2) != 0)) 5714 fatal (_("number of bytes to reverse must be positive and even")); 5715 5716 if (prev && prev != reverse_bytes) 5717 non_fatal (_("Warning: ignoring previous --reverse-bytes value of %d"), 5718 prev); 5719 break; 5720 } 5721 5722 case OPTION_FILE_ALIGNMENT: 5723 pe_file_alignment = parse_vma (optarg, "--file-alignment"); 5724 break; 5725 5726 case OPTION_HEAP: 5727 { 5728 char *end; 5729 pe_heap_reserve = strtoul (optarg, &end, 0); 5730 if (end == optarg 5731 || (*end != '.' && *end != '\0')) 5732 non_fatal (_("%s: invalid reserve value for --heap"), 5733 optarg); 5734 else if (*end != '\0') 5735 { 5736 pe_heap_commit = strtoul (end + 1, &end, 0); 5737 if (*end != '\0') 5738 non_fatal (_("%s: invalid commit value for --heap"), 5739 optarg); 5740 } 5741 } 5742 break; 5743 5744 case OPTION_IMAGE_BASE: 5745 pe_image_base = parse_vma (optarg, "--image-base"); 5746 break; 5747 5748 case OPTION_PE_SECTION_ALIGNMENT: 5749 pe_section_alignment = parse_vma (optarg, 5750 "--section-alignment"); 5751 break; 5752 5753 case OPTION_SUBSYSTEM: 5754 set_pe_subsystem (optarg); 5755 break; 5756 5757 case OPTION_STACK: 5758 { 5759 char *end; 5760 pe_stack_reserve = strtoul (optarg, &end, 0); 5761 if (end == optarg 5762 || (*end != '.' && *end != '\0')) 5763 non_fatal (_("%s: invalid reserve value for --stack"), 5764 optarg); 5765 else if (*end != '\0') 5766 { 5767 pe_stack_commit = strtoul (end + 1, &end, 0); 5768 if (*end != '\0') 5769 non_fatal (_("%s: invalid commit value for --stack"), 5770 optarg); 5771 } 5772 } 5773 break; 5774 5775 case OPTION_VERILOG_DATA_WIDTH: 5776 VerilogDataWidth = parse_vma (optarg, "--verilog-data-width"); 5777 if (VerilogDataWidth < 1) 5778 fatal (_("verilog data width must be at least 1 byte")); 5779 break; 5780 5781 case 0: 5782 /* We've been given a long option. */ 5783 break; 5784 5785 case 'H': 5786 case 'h': 5787 copy_usage (stdout, 0); 5788 5789 default: 5790 copy_usage (stderr, 1); 5791 } 5792 } 5793 5794 if (use_globalize && use_keep_global) 5795 fatal(_("--globalize-symbol(s) is incompatible with -G/--keep-global-symbol(s)")); 5796 5797 if (formats_info) 5798 { 5799 display_info (); 5800 return 0; 5801 } 5802 5803 if (show_version) 5804 print_version ("objcopy"); 5805 5806 if (interleave && copy_byte == -1) 5807 fatal (_("interleave start byte must be set with --byte")); 5808 5809 if (copy_byte >= interleave) 5810 fatal (_("byte number must be less than interleave")); 5811 5812 if (copy_width > interleave - copy_byte) 5813 fatal (_("interleave width must be less than or equal to interleave - byte`")); 5814 5815 if (optind == argc || optind + 2 < argc) 5816 copy_usage (stderr, 1); 5817 5818 input_filename = argv[optind]; 5819 if (optind + 1 < argc) 5820 output_filename = argv[optind + 1]; 5821 5822 default_deterministic (); 5823 5824 /* Default is to strip no symbols. */ 5825 if (strip_symbols == STRIP_UNDEF && discard_locals == LOCALS_UNDEF) 5826 strip_symbols = STRIP_NONE; 5827 5828 if (output_target == NULL) 5829 output_target = input_target; 5830 5831 /* Convert input EFI target to PEI target. */ 5832 if (input_target != NULL 5833 && strncmp (input_target, "efi-", 4) == 0) 5834 { 5835 char *efi; 5836 5837 efi = xstrdup (output_target + 4); 5838 if (strncmp (efi, "bsdrv-", 6) == 0 5839 || strncmp (efi, "rtdrv-", 6) == 0) 5840 efi += 2; 5841 else if (strncmp (efi, "app-", 4) != 0) 5842 fatal (_("unknown input EFI target: %s"), input_target); 5843 5844 input_target = efi; 5845 convert_efi_target (efi); 5846 } 5847 5848 /* Convert output EFI target to PEI target. */ 5849 if (output_target != NULL 5850 && strncmp (output_target, "efi-", 4) == 0) 5851 { 5852 char *efi; 5853 5854 efi = xstrdup (output_target + 4); 5855 if (strncmp (efi, "app-", 4) == 0) 5856 { 5857 if (pe_subsystem == -1) 5858 pe_subsystem = IMAGE_SUBSYSTEM_EFI_APPLICATION; 5859 } 5860 else if (strncmp (efi, "bsdrv-", 6) == 0) 5861 { 5862 if (pe_subsystem == -1) 5863 pe_subsystem = IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER; 5864 efi += 2; 5865 } 5866 else if (strncmp (efi, "rtdrv-", 6) == 0) 5867 { 5868 if (pe_subsystem == -1) 5869 pe_subsystem = IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER; 5870 efi += 2; 5871 } 5872 else 5873 fatal (_("unknown output EFI target: %s"), output_target); 5874 5875 if (pe_file_alignment == (bfd_vma) -1) 5876 pe_file_alignment = PE_DEF_FILE_ALIGNMENT; 5877 if (pe_section_alignment == (bfd_vma) -1) 5878 pe_section_alignment = PE_DEF_SECTION_ALIGNMENT; 5879 5880 output_target = efi; 5881 convert_efi_target (efi); 5882 } 5883 5884 if (preserve_dates) 5885 if (stat (input_filename, & statbuf) < 0) 5886 fatal (_("warning: could not locate '%s'. System error message: %s"), 5887 input_filename, strerror (errno)); 5888 5889 /* If there is no destination file, or the source and destination files 5890 are the same, then create a temp and rename the result into the input. */ 5891 if (output_filename == NULL 5892 || filename_cmp (input_filename, output_filename) == 0) 5893 tmpname = make_tempname (input_filename); 5894 else 5895 tmpname = output_filename; 5896 5897 if (tmpname == NULL) 5898 fatal (_("warning: could not create temporary file whilst copying '%s', (error: %s)"), 5899 input_filename, strerror (errno)); 5900 5901 copy_file (input_filename, tmpname, input_target, output_target, input_arch); 5902 if (status == 0) 5903 { 5904 if (preserve_dates) 5905 set_times (tmpname, &statbuf); 5906 if (tmpname != output_filename) 5907 status = (smart_rename (tmpname, input_filename, 5908 preserve_dates) != 0); 5909 } 5910 else 5911 unlink_if_ordinary (tmpname); 5912 5913 if (tmpname != output_filename) 5914 free (tmpname); 5915 5916 if (change_warn) 5917 { 5918 struct section_list *p; 5919 5920 for (p = change_sections; p != NULL; p = p->next) 5921 { 5922 if (! p->used) 5923 { 5924 if (p->context & (SECTION_CONTEXT_SET_VMA | SECTION_CONTEXT_ALTER_VMA)) 5925 { 5926 char buff [20]; 5927 5928 sprintf_vma (buff, p->vma_val); 5929 5930 /* xgettext:c-format */ 5931 non_fatal (_("%s %s%c0x%s never used"), 5932 "--change-section-vma", 5933 p->pattern, 5934 p->context & SECTION_CONTEXT_SET_VMA ? '=' : '+', 5935 buff); 5936 } 5937 5938 if (p->context & (SECTION_CONTEXT_SET_LMA | SECTION_CONTEXT_ALTER_LMA)) 5939 { 5940 char buff [20]; 5941 5942 sprintf_vma (buff, p->lma_val); 5943 5944 /* xgettext:c-format */ 5945 non_fatal (_("%s %s%c0x%s never used"), 5946 "--change-section-lma", 5947 p->pattern, 5948 p->context & SECTION_CONTEXT_SET_LMA ? '=' : '+', 5949 buff); 5950 } 5951 } 5952 } 5953 } 5954 5955 if (strip_specific_buffer) 5956 free (strip_specific_buffer); 5957 5958 if (strip_unneeded_buffer) 5959 free (strip_unneeded_buffer); 5960 5961 if (keep_specific_buffer) 5962 free (keep_specific_buffer); 5963 5964 if (localize_specific_buffer) 5965 free (globalize_specific_buffer); 5966 5967 if (globalize_specific_buffer) 5968 free (globalize_specific_buffer); 5969 5970 if (keepglobal_specific_buffer) 5971 free (keepglobal_specific_buffer); 5972 5973 if (weaken_specific_buffer) 5974 free (weaken_specific_buffer); 5975 5976 return 0; 5977} 5978 5979int 5980main (int argc, char *argv[]) 5981{ 5982#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) 5983 setlocale (LC_MESSAGES, ""); 5984#endif 5985#if defined (HAVE_SETLOCALE) 5986 setlocale (LC_CTYPE, ""); 5987#endif 5988 bindtextdomain (PACKAGE, LOCALEDIR); 5989 textdomain (PACKAGE); 5990 5991 program_name = argv[0]; 5992 xmalloc_set_program_name (program_name); 5993 5994 START_PROGRESS (program_name, 0); 5995 5996 expandargv (&argc, &argv); 5997 5998 strip_symbols = STRIP_UNDEF; 5999 discard_locals = LOCALS_UNDEF; 6000 6001 if (bfd_init () != BFD_INIT_MAGIC) 6002 fatal (_("fatal error: libbfd ABI mismatch")); 6003 set_default_bfd_target (); 6004 6005 if (is_strip < 0) 6006 { 6007 int i = strlen (program_name); 6008#ifdef HAVE_DOS_BASED_FILE_SYSTEM 6009 /* Drop the .exe suffix, if any. */ 6010 if (i > 4 && FILENAME_CMP (program_name + i - 4, ".exe") == 0) 6011 { 6012 i -= 4; 6013 program_name[i] = '\0'; 6014 } 6015#endif 6016 is_strip = (i >= 5 && FILENAME_CMP (program_name + i - 5, "strip") == 0); 6017 } 6018 6019 create_symbol_htabs (); 6020 6021 if (argv != NULL) 6022 bfd_set_error_program_name (argv[0]); 6023 6024 if (is_strip) 6025 strip_main (argc, argv); 6026 else 6027 copy_main (argc, argv); 6028 6029 END_PROGRESS (program_name); 6030 6031 return status; 6032} 6033