1 /* objcopy.c -- copy object file from input to output, optionally massaging it.
2 Copyright (C) 1991-2018 Free Software Foundation, Inc.
4 This file is part of GNU Binutils.
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.
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.
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
25 #include "libiberty.h"
28 #include "filenames.h"
31 #include "coff/internal.h"
33 #include "safe-ctype.h"
35 /* FIXME: See bfd/peXXigen.c for why we include an architecture specific
36 header in generic PE code. */
37 #include "coff/i386.h"
40 static bfd_vma pe_file_alignment
= (bfd_vma
) -1;
41 static bfd_vma pe_heap_commit
= (bfd_vma
) -1;
42 static bfd_vma pe_heap_reserve
= (bfd_vma
) -1;
43 static bfd_vma pe_image_base
= (bfd_vma
) -1;
44 static bfd_vma pe_section_alignment
= (bfd_vma
) -1;
45 static bfd_vma pe_stack_commit
= (bfd_vma
) -1;
46 static bfd_vma pe_stack_reserve
= (bfd_vma
) -1;
47 static short pe_subsystem
= -1;
48 static short pe_major_subsystem_version
= -1;
49 static short pe_minor_subsystem_version
= -1;
51 struct is_specified_symbol_predicate_data
57 /* A node includes symbol name mapping to support redefine_sym. */
66 struct addsym_node
*next
;
74 typedef struct section_rename
76 const char * old_name
;
77 const char * new_name
;
79 struct section_rename
* next
;
83 /* List of sections to be renamed. */
84 static section_rename
*section_rename_list
;
86 static asymbol
**isympp
= NULL
; /* Input symbols. */
87 static asymbol
**osympp
= NULL
; /* Output symbols that survive stripping. */
89 /* If `copy_byte' >= 0, copy 'copy_width' byte(s) of every `interleave' bytes. */
90 static int copy_byte
= -1;
91 static int interleave
= 0; /* Initialised to 4 in copy_main(). */
92 static int copy_width
= 1;
94 static bfd_boolean verbose
; /* Print file and target names. */
95 static bfd_boolean preserve_dates
; /* Preserve input file timestamp. */
96 static int deterministic
= -1; /* Enable deterministic archives. */
97 static int status
= 0; /* Exit status. */
99 static bfd_boolean merge_notes
= FALSE
; /* Merge note sections. */
100 static bfd_byte
* merged_notes
= NULL
; /* Contents on note section undergoing a merge. */
101 static bfd_size_type merged_size
= 0; /* New, smaller size of the merged note section. */
106 STRIP_NONE
, /* Don't strip. */
107 STRIP_DEBUG
, /* Strip all debugger symbols. */
108 STRIP_UNNEEDED
, /* Strip unnecessary symbols. */
109 STRIP_NONDEBUG
, /* Strip everything but debug info. */
110 STRIP_DWO
, /* Strip all DWO info. */
111 STRIP_NONDWO
, /* Strip everything but DWO info. */
112 STRIP_ALL
/* Strip all symbols. */
115 /* Which symbols to remove. */
116 static enum strip_action strip_symbols
= STRIP_UNDEF
;
121 LOCALS_START_L
, /* Discard locals starting with L. */
122 LOCALS_ALL
/* Discard all locals. */
125 /* Which local symbols to remove. Overrides STRIP_ALL. */
126 static enum locals_action discard_locals
;
128 /* Structure used to hold lists of sections and actions to take. */
131 struct section_list
* next
; /* Next section to change. */
132 const char * pattern
; /* Section name pattern. */
133 bfd_boolean used
; /* Whether this entry was used. */
135 unsigned int context
; /* What to do with matching sections. */
136 /* Flag bits used in the context field.
137 COPY and REMOVE are mutually exlusive. SET and ALTER are mutually exclusive. */
138 #define SECTION_CONTEXT_REMOVE (1 << 0) /* Remove this section. */
139 #define SECTION_CONTEXT_COPY (1 << 1) /* Copy this section, delete all non-copied section. */
140 #define SECTION_CONTEXT_SET_VMA (1 << 2) /* Set the sections' VMA address. */
141 #define SECTION_CONTEXT_ALTER_VMA (1 << 3) /* Increment or decrement the section's VMA address. */
142 #define SECTION_CONTEXT_SET_LMA (1 << 4) /* Set the sections' LMA address. */
143 #define SECTION_CONTEXT_ALTER_LMA (1 << 5) /* Increment or decrement the section's LMA address. */
144 #define SECTION_CONTEXT_SET_FLAGS (1 << 6) /* Set the section's flags. */
145 #define SECTION_CONTEXT_REMOVE_RELOCS (1 << 7) /* Remove relocations for this section. */
147 bfd_vma vma_val
; /* Amount to change by or set to. */
148 bfd_vma lma_val
; /* Amount to change by or set to. */
149 flagword flags
; /* What to set the section flags to. */
152 static struct section_list
*change_sections
;
154 /* TRUE if some sections are to be removed. */
155 static bfd_boolean sections_removed
;
157 /* TRUE if only some sections are to be copied. */
158 static bfd_boolean sections_copied
;
160 /* Changes to the start address. */
161 static bfd_vma change_start
= 0;
162 static bfd_boolean set_start_set
= FALSE
;
163 static bfd_vma set_start
;
165 /* Changes to section addresses. */
166 static bfd_vma change_section_address
= 0;
168 /* Filling gaps between sections. */
169 static bfd_boolean gap_fill_set
= FALSE
;
170 static bfd_byte gap_fill
= 0;
172 /* Pad to a given address. */
173 static bfd_boolean pad_to_set
= FALSE
;
174 static bfd_vma pad_to
;
176 /* Use alternative machine code? */
177 static unsigned long use_alt_mach_code
= 0;
179 /* Output BFD flags user wants to set or clear */
180 static flagword bfd_flags_to_set
;
181 static flagword bfd_flags_to_clear
;
183 /* List of sections to add. */
186 /* Next section to add. */
187 struct section_add
*next
;
188 /* Name of section to add. */
190 /* Name of file holding section contents. */
191 const char *filename
;
194 /* Contents of file. */
196 /* BFD section, after it has been added. */
200 /* List of sections to add to the output BFD. */
201 static struct section_add
*add_sections
;
203 /* List of sections to update in the output BFD. */
204 static struct section_add
*update_sections
;
206 /* List of sections to dump from the output BFD. */
207 static struct section_add
*dump_sections
;
209 /* If non-NULL the argument to --add-gnu-debuglink.
210 This should be the filename to store in the .gnu_debuglink section. */
211 static const char * gnu_debuglink_filename
= NULL
;
213 /* Whether to convert debugging information. */
214 static bfd_boolean convert_debugging
= FALSE
;
216 /* Whether to compress/decompress DWARF debug sections. */
221 compress_zlib
= compress
| 1 << 1,
222 compress_gnu_zlib
= compress
| 1 << 2,
223 compress_gabi_zlib
= compress
| 1 << 3,
225 } do_debug_sections
= nothing
;
227 /* Whether to generate ELF common symbols with the STT_COMMON type. */
228 static enum bfd_link_elf_stt_common do_elf_stt_common
= unchanged
;
230 /* Whether to change the leading character in symbol names. */
231 static bfd_boolean change_leading_char
= FALSE
;
233 /* Whether to remove the leading character from global symbol names. */
234 static bfd_boolean remove_leading_char
= FALSE
;
236 /* Whether to permit wildcard in symbol comparison. */
237 static bfd_boolean wildcard
= FALSE
;
239 /* True if --localize-hidden is in effect. */
240 static bfd_boolean localize_hidden
= FALSE
;
242 /* List of symbols to strip, keep, localize, keep-global, weaken,
244 static htab_t strip_specific_htab
= NULL
;
245 static htab_t strip_unneeded_htab
= NULL
;
246 static htab_t keep_specific_htab
= NULL
;
247 static htab_t localize_specific_htab
= NULL
;
248 static htab_t globalize_specific_htab
= NULL
;
249 static htab_t keepglobal_specific_htab
= NULL
;
250 static htab_t weaken_specific_htab
= NULL
;
251 static htab_t redefine_specific_htab
= NULL
;
252 static htab_t redefine_specific_reverse_htab
= NULL
;
253 static struct addsym_node
*add_sym_list
= NULL
, **add_sym_tail
= &add_sym_list
;
254 static int add_symbols
= 0;
256 /* If this is TRUE, we weaken global symbols (set BSF_WEAK). */
257 static bfd_boolean weaken
= FALSE
;
259 /* If this is TRUE, we retain BSF_FILE symbols. */
260 static bfd_boolean keep_file_symbols
= FALSE
;
262 /* Prefix symbols/sections. */
263 static char *prefix_symbols_string
= 0;
264 static char *prefix_sections_string
= 0;
265 static char *prefix_alloc_sections_string
= 0;
267 /* True if --extract-symbol was passed on the command line. */
268 static bfd_boolean extract_symbol
= FALSE
;
270 /* If `reverse_bytes' is nonzero, then reverse the order of every chunk
271 of <reverse_bytes> bytes within each output section. */
272 static int reverse_bytes
= 0;
274 /* For Coff objects, we may want to allow or disallow long section names,
275 or preserve them where found in the inputs. Debug info relies on them. */
276 enum long_section_name_handling
283 /* The default long section handling mode is to preserve them.
284 This is also the only behaviour for 'strip'. */
285 static enum long_section_name_handling long_section_names
= KEEP
;
287 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
288 enum command_line_switch
290 OPTION_ADD_SECTION
=150,
291 OPTION_ADD_GNU_DEBUGLINK
,
293 OPTION_ALT_MACH_CODE
,
294 OPTION_CHANGE_ADDRESSES
,
295 OPTION_CHANGE_LEADING_CHAR
,
296 OPTION_CHANGE_SECTION_ADDRESS
,
297 OPTION_CHANGE_SECTION_LMA
,
298 OPTION_CHANGE_SECTION_VMA
,
300 OPTION_CHANGE_WARNINGS
,
301 OPTION_COMPRESS_DEBUG_SECTIONS
,
303 OPTION_DECOMPRESS_DEBUG_SECTIONS
,
305 OPTION_ELF_STT_COMMON
,
307 OPTION_EXTRACT_SYMBOL
,
308 OPTION_FILE_ALIGNMENT
,
311 OPTION_GLOBALIZE_SYMBOL
,
312 OPTION_GLOBALIZE_SYMBOLS
,
316 OPTION_INTERLEAVE_WIDTH
,
317 OPTION_KEEPGLOBAL_SYMBOLS
,
318 OPTION_KEEP_FILE_SYMBOLS
,
320 OPTION_LOCALIZE_HIDDEN
,
321 OPTION_LOCALIZE_SYMBOLS
,
322 OPTION_LONG_SECTION_NAMES
,
324 OPTION_NO_MERGE_NOTES
,
325 OPTION_NO_CHANGE_WARNINGS
,
326 OPTION_ONLY_KEEP_DEBUG
,
328 OPTION_PREFIX_ALLOC_SECTIONS
,
329 OPTION_PREFIX_SECTIONS
,
330 OPTION_PREFIX_SYMBOLS
,
332 OPTION_READONLY_TEXT
,
334 OPTION_REDEFINE_SYMS
,
335 OPTION_REMOVE_LEADING_CHAR
,
336 OPTION_REMOVE_RELOCS
,
337 OPTION_RENAME_SECTION
,
338 OPTION_REVERSE_BYTES
,
339 OPTION_SECTION_ALIGNMENT
,
340 OPTION_SET_SECTION_FLAGS
,
346 OPTION_STRIP_SYMBOLS
,
347 OPTION_STRIP_UNNEEDED
,
348 OPTION_STRIP_UNNEEDED_SYMBOL
,
349 OPTION_STRIP_UNNEEDED_SYMBOLS
,
351 OPTION_UPDATE_SECTION
,
353 OPTION_WEAKEN_SYMBOLS
,
357 /* Options to handle if running as "strip". */
359 static struct option strip_options
[] =
361 {"disable-deterministic-archives", no_argument
, 0, 'U'},
362 {"discard-all", no_argument
, 0, 'x'},
363 {"discard-locals", no_argument
, 0, 'X'},
364 {"enable-deterministic-archives", no_argument
, 0, 'D'},
365 {"format", required_argument
, 0, 'F'}, /* Obsolete */
366 {"help", no_argument
, 0, 'h'},
367 {"info", no_argument
, 0, OPTION_FORMATS_INFO
},
368 {"input-format", required_argument
, 0, 'I'}, /* Obsolete */
369 {"input-target", required_argument
, 0, 'I'},
370 {"keep-file-symbols", no_argument
, 0, OPTION_KEEP_FILE_SYMBOLS
},
371 {"keep-symbol", required_argument
, 0, 'K'},
372 {"merge-notes", no_argument
, 0, 'M'},
373 {"no-merge-notes", no_argument
, 0, OPTION_NO_MERGE_NOTES
},
374 {"only-keep-debug", no_argument
, 0, OPTION_ONLY_KEEP_DEBUG
},
375 {"output-file", required_argument
, 0, 'o'},
376 {"output-format", required_argument
, 0, 'O'}, /* Obsolete */
377 {"output-target", required_argument
, 0, 'O'},
378 {"preserve-dates", no_argument
, 0, 'p'},
379 {"remove-section", required_argument
, 0, 'R'},
380 {"remove-relocations", required_argument
, 0, OPTION_REMOVE_RELOCS
},
381 {"strip-all", no_argument
, 0, 's'},
382 {"strip-debug", no_argument
, 0, 'S'},
383 {"strip-dwo", no_argument
, 0, OPTION_STRIP_DWO
},
384 {"strip-symbol", required_argument
, 0, 'N'},
385 {"strip-unneeded", no_argument
, 0, OPTION_STRIP_UNNEEDED
},
386 {"target", required_argument
, 0, 'F'},
387 {"verbose", no_argument
, 0, 'v'},
388 {"version", no_argument
, 0, 'V'},
389 {"wildcard", no_argument
, 0, 'w'},
390 {0, no_argument
, 0, 0}
393 /* Options to handle if running as "objcopy". */
395 static struct option copy_options
[] =
397 {"add-gnu-debuglink", required_argument
, 0, OPTION_ADD_GNU_DEBUGLINK
},
398 {"add-section", required_argument
, 0, OPTION_ADD_SECTION
},
399 {"add-symbol", required_argument
, 0, OPTION_ADD_SYMBOL
},
400 {"adjust-section-vma", required_argument
, 0, OPTION_CHANGE_SECTION_ADDRESS
},
401 {"adjust-start", required_argument
, 0, OPTION_CHANGE_START
},
402 {"adjust-vma", required_argument
, 0, OPTION_CHANGE_ADDRESSES
},
403 {"adjust-warnings", no_argument
, 0, OPTION_CHANGE_WARNINGS
},
404 {"alt-machine-code", required_argument
, 0, OPTION_ALT_MACH_CODE
},
405 {"binary-architecture", required_argument
, 0, 'B'},
406 {"byte", required_argument
, 0, 'b'},
407 {"change-addresses", required_argument
, 0, OPTION_CHANGE_ADDRESSES
},
408 {"change-leading-char", no_argument
, 0, OPTION_CHANGE_LEADING_CHAR
},
409 {"change-section-address", required_argument
, 0, OPTION_CHANGE_SECTION_ADDRESS
},
410 {"change-section-lma", required_argument
, 0, OPTION_CHANGE_SECTION_LMA
},
411 {"change-section-vma", required_argument
, 0, OPTION_CHANGE_SECTION_VMA
},
412 {"change-start", required_argument
, 0, OPTION_CHANGE_START
},
413 {"change-warnings", no_argument
, 0, OPTION_CHANGE_WARNINGS
},
414 {"compress-debug-sections", optional_argument
, 0, OPTION_COMPRESS_DEBUG_SECTIONS
},
415 {"debugging", no_argument
, 0, OPTION_DEBUGGING
},
416 {"decompress-debug-sections", no_argument
, 0, OPTION_DECOMPRESS_DEBUG_SECTIONS
},
417 {"disable-deterministic-archives", no_argument
, 0, 'U'},
418 {"discard-all", no_argument
, 0, 'x'},
419 {"discard-locals", no_argument
, 0, 'X'},
420 {"dump-section", required_argument
, 0, OPTION_DUMP_SECTION
},
421 {"elf-stt-common", required_argument
, 0, OPTION_ELF_STT_COMMON
},
422 {"enable-deterministic-archives", no_argument
, 0, 'D'},
423 {"extract-dwo", no_argument
, 0, OPTION_EXTRACT_DWO
},
424 {"extract-symbol", no_argument
, 0, OPTION_EXTRACT_SYMBOL
},
425 {"file-alignment", required_argument
, 0, OPTION_FILE_ALIGNMENT
},
426 {"format", required_argument
, 0, 'F'}, /* Obsolete */
427 {"gap-fill", required_argument
, 0, OPTION_GAP_FILL
},
428 {"globalize-symbol", required_argument
, 0, OPTION_GLOBALIZE_SYMBOL
},
429 {"globalize-symbols", required_argument
, 0, OPTION_GLOBALIZE_SYMBOLS
},
430 {"heap", required_argument
, 0, OPTION_HEAP
},
431 {"help", no_argument
, 0, 'h'},
432 {"image-base", required_argument
, 0 , OPTION_IMAGE_BASE
},
433 {"impure", no_argument
, 0, OPTION_IMPURE
},
434 {"info", no_argument
, 0, OPTION_FORMATS_INFO
},
435 {"input-format", required_argument
, 0, 'I'}, /* Obsolete */
436 {"input-target", required_argument
, 0, 'I'},
437 {"interleave", optional_argument
, 0, 'i'},
438 {"interleave-width", required_argument
, 0, OPTION_INTERLEAVE_WIDTH
},
439 {"keep-file-symbols", no_argument
, 0, OPTION_KEEP_FILE_SYMBOLS
},
440 {"keep-global-symbol", required_argument
, 0, 'G'},
441 {"keep-global-symbols", required_argument
, 0, OPTION_KEEPGLOBAL_SYMBOLS
},
442 {"keep-symbol", required_argument
, 0, 'K'},
443 {"keep-symbols", required_argument
, 0, OPTION_KEEP_SYMBOLS
},
444 {"localize-hidden", no_argument
, 0, OPTION_LOCALIZE_HIDDEN
},
445 {"localize-symbol", required_argument
, 0, 'L'},
446 {"localize-symbols", required_argument
, 0, OPTION_LOCALIZE_SYMBOLS
},
447 {"long-section-names", required_argument
, 0, OPTION_LONG_SECTION_NAMES
},
448 {"merge-notes", no_argument
, 0, 'M'},
449 {"no-merge-notes", no_argument
, 0, OPTION_NO_MERGE_NOTES
},
450 {"no-adjust-warnings", no_argument
, 0, OPTION_NO_CHANGE_WARNINGS
},
451 {"no-change-warnings", no_argument
, 0, OPTION_NO_CHANGE_WARNINGS
},
452 {"only-keep-debug", no_argument
, 0, OPTION_ONLY_KEEP_DEBUG
},
453 {"only-section", required_argument
, 0, 'j'},
454 {"output-format", required_argument
, 0, 'O'}, /* Obsolete */
455 {"output-target", required_argument
, 0, 'O'},
456 {"pad-to", required_argument
, 0, OPTION_PAD_TO
},
457 {"prefix-alloc-sections", required_argument
, 0, OPTION_PREFIX_ALLOC_SECTIONS
},
458 {"prefix-sections", required_argument
, 0, OPTION_PREFIX_SECTIONS
},
459 {"prefix-symbols", required_argument
, 0, OPTION_PREFIX_SYMBOLS
},
460 {"preserve-dates", no_argument
, 0, 'p'},
461 {"pure", no_argument
, 0, OPTION_PURE
},
462 {"readonly-text", no_argument
, 0, OPTION_READONLY_TEXT
},
463 {"redefine-sym", required_argument
, 0, OPTION_REDEFINE_SYM
},
464 {"redefine-syms", required_argument
, 0, OPTION_REDEFINE_SYMS
},
465 {"remove-leading-char", no_argument
, 0, OPTION_REMOVE_LEADING_CHAR
},
466 {"remove-section", required_argument
, 0, 'R'},
467 {"remove-relocations", required_argument
, 0, OPTION_REMOVE_RELOCS
},
468 {"rename-section", required_argument
, 0, OPTION_RENAME_SECTION
},
469 {"reverse-bytes", required_argument
, 0, OPTION_REVERSE_BYTES
},
470 {"section-alignment", required_argument
, 0, OPTION_SECTION_ALIGNMENT
},
471 {"set-section-flags", required_argument
, 0, OPTION_SET_SECTION_FLAGS
},
472 {"set-start", required_argument
, 0, OPTION_SET_START
},
473 {"srec-forceS3", no_argument
, 0, OPTION_SREC_FORCES3
},
474 {"srec-len", required_argument
, 0, OPTION_SREC_LEN
},
475 {"stack", required_argument
, 0, OPTION_STACK
},
476 {"strip-all", no_argument
, 0, 'S'},
477 {"strip-debug", no_argument
, 0, 'g'},
478 {"strip-dwo", no_argument
, 0, OPTION_STRIP_DWO
},
479 {"strip-symbol", required_argument
, 0, 'N'},
480 {"strip-symbols", required_argument
, 0, OPTION_STRIP_SYMBOLS
},
481 {"strip-unneeded", no_argument
, 0, OPTION_STRIP_UNNEEDED
},
482 {"strip-unneeded-symbol", required_argument
, 0, OPTION_STRIP_UNNEEDED_SYMBOL
},
483 {"strip-unneeded-symbols", required_argument
, 0, OPTION_STRIP_UNNEEDED_SYMBOLS
},
484 {"subsystem", required_argument
, 0, OPTION_SUBSYSTEM
},
485 {"target", required_argument
, 0, 'F'},
486 {"update-section", required_argument
, 0, OPTION_UPDATE_SECTION
},
487 {"verbose", no_argument
, 0, 'v'},
488 {"version", no_argument
, 0, 'V'},
489 {"weaken", no_argument
, 0, OPTION_WEAKEN
},
490 {"weaken-symbol", required_argument
, 0, 'W'},
491 {"weaken-symbols", required_argument
, 0, OPTION_WEAKEN_SYMBOLS
},
492 {"wildcard", no_argument
, 0, 'w'},
493 {"writable-text", no_argument
, 0, OPTION_WRITABLE_TEXT
},
494 {0, no_argument
, 0, 0}
498 extern char *program_name
;
500 /* This flag distinguishes between strip and objcopy:
501 1 means this is 'strip'; 0 means this is 'objcopy'.
502 -1 means if we should use argv[0] to decide. */
505 /* The maximum length of an S record. This variable is defined in srec.c
506 and can be modified by the --srec-len parameter. */
507 extern unsigned int _bfd_srec_len
;
509 /* Restrict the generation of Srecords to type S3 only.
510 This variable is defined in bfd/srec.c and can be toggled
511 on by the --srec-forceS3 command line switch. */
512 extern bfd_boolean _bfd_srec_forceS3
;
514 /* Forward declarations. */
515 static void setup_section (bfd
*, asection
*, void *);
516 static void setup_bfd_headers (bfd
*, bfd
*);
517 static void copy_relocations_in_section (bfd
*, asection
*, void *);
518 static void copy_section (bfd
*, asection
*, void *);
519 static void get_sections (bfd
*, asection
*, void *);
520 static int compare_section_lma (const void *, const void *);
521 static void mark_symbols_used_in_relocations (bfd
*, asection
*, void *);
522 static bfd_boolean
write_debugging_info (bfd
*, void *, long *, asymbol
***);
523 static const char *lookup_sym_redefinition (const char *);
524 static const char *find_section_rename (const char *, flagword
*);
526 ATTRIBUTE_NORETURN
static void
527 copy_usage (FILE *stream
, int exit_status
)
529 fprintf (stream
, _("Usage: %s [option(s)] in-file [out-file]\n"), program_name
);
530 fprintf (stream
, _(" Copies a binary file, possibly transforming it in the process\n"));
531 fprintf (stream
, _(" The options are:\n"));
532 fprintf (stream
, _("\
533 -I --input-target <bfdname> Assume input file is in format <bfdname>\n\
534 -O --output-target <bfdname> Create an output file in format <bfdname>\n\
535 -B --binary-architecture <arch> Set output arch, when input is arch-less\n\
536 -F --target <bfdname> Set both input and output format to <bfdname>\n\
537 --debugging Convert debugging information, if possible\n\
538 -p --preserve-dates Copy modified/access timestamps to the output\n"));
539 if (DEFAULT_AR_DETERMINISTIC
)
540 fprintf (stream
, _("\
541 -D --enable-deterministic-archives\n\
542 Produce deterministic output when stripping archives (default)\n\
543 -U --disable-deterministic-archives\n\
544 Disable -D behavior\n"));
546 fprintf (stream
, _("\
547 -D --enable-deterministic-archives\n\
548 Produce deterministic output when stripping archives\n\
549 -U --disable-deterministic-archives\n\
550 Disable -D behavior (default)\n"));
551 fprintf (stream
, _("\
552 -j --only-section <name> Only copy section <name> into the output\n\
553 --add-gnu-debuglink=<file> Add section .gnu_debuglink linking to <file>\n\
554 -R --remove-section <name> Remove section <name> from the output\n\
555 --remove-relocations <name> Remove relocations from section <name>\n\
556 -S --strip-all Remove all symbol and relocation information\n\
557 -g --strip-debug Remove all debugging symbols & sections\n\
558 --strip-dwo Remove all DWO sections\n\
559 --strip-unneeded Remove all symbols not needed by relocations\n\
560 -N --strip-symbol <name> Do not copy symbol <name>\n\
561 --strip-unneeded-symbol <name>\n\
562 Do not copy symbol <name> unless needed by\n\
564 --only-keep-debug Strip everything but the debug information\n\
565 --extract-dwo Copy only DWO sections\n\
566 --extract-symbol Remove section contents but keep symbols\n\
567 -K --keep-symbol <name> Do not strip symbol <name>\n\
568 --keep-file-symbols Do not strip file symbol(s)\n\
569 --localize-hidden Turn all ELF hidden symbols into locals\n\
570 -L --localize-symbol <name> Force symbol <name> to be marked as a local\n\
571 --globalize-symbol <name> Force symbol <name> to be marked as a global\n\
572 -G --keep-global-symbol <name> Localize all symbols except <name>\n\
573 -W --weaken-symbol <name> Force symbol <name> to be marked as a weak\n\
574 --weaken Force all global symbols to be marked as weak\n\
575 -w --wildcard Permit wildcard in symbol comparison\n\
576 -x --discard-all Remove all non-global symbols\n\
577 -X --discard-locals Remove any compiler-generated symbols\n\
578 -i --interleave[=<number>] Only copy N out of every <number> bytes\n\
579 --interleave-width <number> Set N for --interleave\n\
580 -b --byte <num> Select byte <num> in every interleaved block\n\
581 --gap-fill <val> Fill gaps between sections with <val>\n\
582 --pad-to <addr> Pad the last section up to address <addr>\n\
583 --set-start <addr> Set the start address to <addr>\n\
584 {--change-start|--adjust-start} <incr>\n\
585 Add <incr> to the start address\n\
586 {--change-addresses|--adjust-vma} <incr>\n\
587 Add <incr> to LMA, VMA and start addresses\n\
588 {--change-section-address|--adjust-section-vma} <name>{=|+|-}<val>\n\
589 Change LMA and VMA of section <name> by <val>\n\
590 --change-section-lma <name>{=|+|-}<val>\n\
591 Change the LMA of section <name> by <val>\n\
592 --change-section-vma <name>{=|+|-}<val>\n\
593 Change the VMA of section <name> by <val>\n\
594 {--[no-]change-warnings|--[no-]adjust-warnings}\n\
595 Warn if a named section does not exist\n\
596 --set-section-flags <name>=<flags>\n\
597 Set section <name>'s properties to <flags>\n\
598 --add-section <name>=<file> Add section <name> found in <file> to output\n\
599 --update-section <name>=<file>\n\
600 Update contents of section <name> with\n\
601 contents found in <file>\n\
602 --dump-section <name>=<file> Dump the contents of section <name> into <file>\n\
603 --rename-section <old>=<new>[,<flags>] Rename section <old> to <new>\n\
604 --long-section-names {enable|disable|keep}\n\
605 Handle long section names in Coff objects.\n\
606 --change-leading-char Force output format's leading character style\n\
607 --remove-leading-char Remove leading character from global symbols\n\
608 --reverse-bytes=<num> Reverse <num> bytes at a time, in output sections with content\n\
609 --redefine-sym <old>=<new> Redefine symbol name <old> to <new>\n\
610 --redefine-syms <file> --redefine-sym for all symbol pairs \n\
612 --srec-len <number> Restrict the length of generated Srecords\n\
613 --srec-forceS3 Restrict the type of generated Srecords to S3\n\
614 --strip-symbols <file> -N for all symbols listed in <file>\n\
615 --strip-unneeded-symbols <file>\n\
616 --strip-unneeded-symbol for all symbols listed\n\
618 --keep-symbols <file> -K for all symbols listed in <file>\n\
619 --localize-symbols <file> -L for all symbols listed in <file>\n\
620 --globalize-symbols <file> --globalize-symbol for all in <file>\n\
621 --keep-global-symbols <file> -G for all symbols listed in <file>\n\
622 --weaken-symbols <file> -W for all symbols listed in <file>\n\
623 --add-symbol <name>=[<section>:]<value>[,<flags>] Add a symbol\n\
624 --alt-machine-code <index> Use the target's <index>'th alternative machine\n\
625 --writable-text Mark the output text as writable\n\
626 --readonly-text Make the output text write protected\n\
627 --pure Mark the output file as demand paged\n\
628 --impure Mark the output file as impure\n\
629 --prefix-symbols <prefix> Add <prefix> to start of every symbol name\n\
630 --prefix-sections <prefix> Add <prefix> to start of every section name\n\
631 --prefix-alloc-sections <prefix>\n\
632 Add <prefix> to start of every allocatable\n\
634 --file-alignment <num> Set PE file alignment to <num>\n\
635 --heap <reserve>[,<commit>] Set PE reserve/commit heap to <reserve>/\n\
637 --image-base <address> Set PE image base to <address>\n\
638 --section-alignment <num> Set PE section alignment to <num>\n\
639 --stack <reserve>[,<commit>] Set PE reserve/commit stack to <reserve>/\n\
641 --subsystem <name>[:<version>]\n\
642 Set PE subsystem to <name> [& <version>]\n\
643 --compress-debug-sections[={none|zlib|zlib-gnu|zlib-gabi}]\n\
644 Compress DWARF debug sections using zlib\n\
645 --decompress-debug-sections Decompress DWARF debug sections using zlib\n\
646 --elf-stt-common=[yes|no] Generate ELF common symbols with STT_COMMON\n\
648 -M --merge-notes Remove redundant entries in note sections\n\
649 --no-merge-notes Do not attempt to remove redundant notes (default)\n\
650 -v --verbose List all object files modified\n\
651 @<file> Read options from <file>\n\
652 -V --version Display this program's version number\n\
653 -h --help Display this output\n\
654 --info List object formats & architectures supported\n\
656 list_supported_targets (program_name
, stream
);
657 if (REPORT_BUGS_TO
[0] && exit_status
== 0)
658 fprintf (stream
, _("Report bugs to %s\n"), REPORT_BUGS_TO
);
662 ATTRIBUTE_NORETURN
static void
663 strip_usage (FILE *stream
, int exit_status
)
665 fprintf (stream
, _("Usage: %s <option(s)> in-file(s)\n"), program_name
);
666 fprintf (stream
, _(" Removes symbols and sections from files\n"));
667 fprintf (stream
, _(" The options are:\n"));
668 fprintf (stream
, _("\
669 -I --input-target=<bfdname> Assume input file is in format <bfdname>\n\
670 -O --output-target=<bfdname> Create an output file in format <bfdname>\n\
671 -F --target=<bfdname> Set both input and output format to <bfdname>\n\
672 -p --preserve-dates Copy modified/access timestamps to the output\n\
674 if (DEFAULT_AR_DETERMINISTIC
)
675 fprintf (stream
, _("\
676 -D --enable-deterministic-archives\n\
677 Produce deterministic output when stripping archives (default)\n\
678 -U --disable-deterministic-archives\n\
679 Disable -D behavior\n"));
681 fprintf (stream
, _("\
682 -D --enable-deterministic-archives\n\
683 Produce deterministic output when stripping archives\n\
684 -U --disable-deterministic-archives\n\
685 Disable -D behavior (default)\n"));
686 fprintf (stream
, _("\
687 -R --remove-section=<name> Also remove section <name> from the output\n\
688 --remove-relocations <name> Remove relocations from section <name>\n\
689 -s --strip-all Remove all symbol and relocation information\n\
690 -g -S -d --strip-debug Remove all debugging symbols & sections\n\
691 --strip-dwo Remove all DWO sections\n\
692 --strip-unneeded Remove all symbols not needed by relocations\n\
693 --only-keep-debug Strip everything but the debug information\n\
694 -M --merge-notes Remove redundant entries in note sections (default)\n\
695 --no-merge-notes Do not attempt to remove redundant notes\n\
696 -N --strip-symbol=<name> Do not copy symbol <name>\n\
697 -K --keep-symbol=<name> Do not strip symbol <name>\n\
698 --keep-file-symbols Do not strip file symbol(s)\n\
699 -w --wildcard Permit wildcard in symbol comparison\n\
700 -x --discard-all Remove all non-global symbols\n\
701 -X --discard-locals Remove any compiler-generated symbols\n\
702 -v --verbose List all object files modified\n\
703 -V --version Display this program's version number\n\
704 -h --help Display this output\n\
705 --info List object formats & architectures supported\n\
706 -o <file> Place stripped output into <file>\n\
709 list_supported_targets (program_name
, stream
);
710 if (REPORT_BUGS_TO
[0] && exit_status
== 0)
711 fprintf (stream
, _("Report bugs to %s\n"), REPORT_BUGS_TO
);
715 /* Parse section flags into a flagword, with a fatal error if the
716 string can't be parsed. */
719 parse_flags (const char *s
)
729 snext
= strchr (s
, ',');
739 #define PARSE_FLAG(fname,fval) \
740 else if (strncasecmp (fname, s, len) == 0) ret |= fval
741 PARSE_FLAG ("alloc", SEC_ALLOC
);
742 PARSE_FLAG ("load", SEC_LOAD
);
743 PARSE_FLAG ("noload", SEC_NEVER_LOAD
);
744 PARSE_FLAG ("readonly", SEC_READONLY
);
745 PARSE_FLAG ("debug", SEC_DEBUGGING
);
746 PARSE_FLAG ("code", SEC_CODE
);
747 PARSE_FLAG ("data", SEC_DATA
);
748 PARSE_FLAG ("rom", SEC_ROM
);
749 PARSE_FLAG ("share", SEC_COFF_SHARED
);
750 PARSE_FLAG ("contents", SEC_HAS_CONTENTS
);
751 PARSE_FLAG ("merge", SEC_MERGE
);
752 PARSE_FLAG ("strings", SEC_STRINGS
);
758 copy
= (char *) xmalloc (len
+ 1);
759 strncpy (copy
, s
, len
);
761 non_fatal (_("unrecognized section flag `%s'"), copy
);
762 fatal (_("supported flags: %s"),
763 "alloc, load, noload, readonly, debug, code, data, rom, share, contents, merge, strings");
773 /* Parse symbol flags into a flagword, with a fatal error if the
774 string can't be parsed. */
777 parse_symflags (const char *s
, char **other
)
787 snext
= strchr (s
, ',');
796 #define PARSE_FLAG(fname, fval) \
797 else if (len == sizeof fname - 1 \
798 && strncasecmp (fname, s, len) == 0) \
801 #define PARSE_OTHER(fname, fval) \
802 else if (len >= sizeof fname \
803 && strncasecmp (fname, s, sizeof fname - 1) == 0) \
804 fval = xstrndup (s + sizeof fname - 1, len - sizeof fname + 1)
807 PARSE_FLAG ("local", BSF_LOCAL
);
808 PARSE_FLAG ("global", BSF_GLOBAL
);
809 PARSE_FLAG ("export", BSF_EXPORT
);
810 PARSE_FLAG ("debug", BSF_DEBUGGING
);
811 PARSE_FLAG ("function", BSF_FUNCTION
);
812 PARSE_FLAG ("weak", BSF_WEAK
);
813 PARSE_FLAG ("section", BSF_SECTION_SYM
);
814 PARSE_FLAG ("constructor", BSF_CONSTRUCTOR
);
815 PARSE_FLAG ("warning", BSF_WARNING
);
816 PARSE_FLAG ("indirect", BSF_INDIRECT
);
817 PARSE_FLAG ("file", BSF_FILE
);
818 PARSE_FLAG ("object", BSF_OBJECT
);
819 PARSE_FLAG ("synthetic", BSF_SYNTHETIC
);
820 PARSE_FLAG ("indirect-function", BSF_GNU_INDIRECT_FUNCTION
| BSF_FUNCTION
);
821 PARSE_FLAG ("unique-object", BSF_GNU_UNIQUE
| BSF_OBJECT
);
822 PARSE_OTHER ("before=", *other
);
830 copy
= (char *) xmalloc (len
+ 1);
831 strncpy (copy
, s
, len
);
833 non_fatal (_("unrecognized symbol flag `%s'"), copy
);
834 fatal (_("supported flags: %s"),
835 "local, global, export, debug, function, weak, section, "
836 "constructor, warning, indirect, file, object, synthetic, "
837 "indirect-function, unique-object, before=<othersym>");
847 /* Find and optionally add an entry in the change_sections list.
849 We need to be careful in how we match section names because of the support
850 for wildcard characters. For example suppose that the user has invoked
853 --set-section-flags .debug_*=debug
854 --set-section-flags .debug_str=readonly,debug
855 --change-section-address .debug_*ranges=0x1000
857 With the idea that all debug sections will receive the DEBUG flag, the
858 .debug_str section will also receive the READONLY flag and the
859 .debug_ranges and .debug_aranges sections will have their address set to
860 0x1000. (This may not make much sense, but it is just an example).
862 When adding the section name patterns to the section list we need to make
863 sure that previous entries do not match with the new entry, unless the
864 match is exact. (In which case we assume that the user is overriding
865 the previous entry with the new context).
867 When matching real section names to the section list we make use of the
868 wildcard characters, but we must do so in context. Eg if we are setting
869 section addresses then we match for .debug_ranges but not for .debug_info.
871 Finally, if ADD is false and we do find a match, we mark the section list
874 static struct section_list
*
875 find_section_list (const char *name
, bfd_boolean add
, unsigned int context
)
877 struct section_list
*p
, *match
= NULL
;
879 /* assert ((context & ((1 << 7) - 1)) != 0); */
881 for (p
= change_sections
; p
!= NULL
; p
= p
->next
)
885 if (strcmp (p
->pattern
, name
) == 0)
887 /* Check for context conflicts. */
888 if (((p
->context
& SECTION_CONTEXT_REMOVE
)
889 && (context
& SECTION_CONTEXT_COPY
))
890 || ((context
& SECTION_CONTEXT_REMOVE
)
891 && (p
->context
& SECTION_CONTEXT_COPY
)))
892 fatal (_("error: %s both copied and removed"), name
);
894 if (((p
->context
& SECTION_CONTEXT_SET_VMA
)
895 && (context
& SECTION_CONTEXT_ALTER_VMA
))
896 || ((context
& SECTION_CONTEXT_SET_VMA
)
897 && (context
& SECTION_CONTEXT_ALTER_VMA
)))
898 fatal (_("error: %s both sets and alters VMA"), name
);
900 if (((p
->context
& SECTION_CONTEXT_SET_LMA
)
901 && (context
& SECTION_CONTEXT_ALTER_LMA
))
902 || ((context
& SECTION_CONTEXT_SET_LMA
)
903 && (context
& SECTION_CONTEXT_ALTER_LMA
)))
904 fatal (_("error: %s both sets and alters LMA"), name
);
906 /* Extend the context. */
907 p
->context
|= context
;
911 /* If we are not adding a new name/pattern then
912 only check for a match if the context applies. */
913 else if (p
->context
& context
)
915 /* We could check for the presence of wildchar characters
916 first and choose between calling strcmp and fnmatch,
917 but is that really worth it ? */
918 if (p
->pattern
[0] == '!')
920 if (fnmatch (p
->pattern
+ 1, name
, 0) == 0)
928 if (fnmatch (p
->pattern
, name
, 0) == 0)
944 p
= (struct section_list
*) xmalloc (sizeof (struct section_list
));
947 p
->context
= context
;
951 p
->next
= change_sections
;
957 /* S1 is the entry node already in the table, S2 is the key node. */
960 eq_string_redefnode (const void *s1
, const void *s2
)
962 struct redefine_node
*node1
= (struct redefine_node
*) s1
;
963 struct redefine_node
*node2
= (struct redefine_node
*) s2
;
964 return !strcmp ((const char *) node1
->source
, (const char *) node2
->source
);
967 /* P is redefine node. Hash value is generated from its "source" filed. */
970 htab_hash_redefnode (const void *p
)
972 struct redefine_node
*redefnode
= (struct redefine_node
*) p
;
973 return htab_hash_string (redefnode
->source
);
976 /* Create hashtab used for redefine node. */
979 create_symbol2redef_htab (void)
981 return htab_create_alloc (16, htab_hash_redefnode
, eq_string_redefnode
, NULL
,
985 /* There is htab_hash_string but no htab_eq_string. Makes sense. */
988 eq_string (const void *s1
, const void *s2
)
990 return strcmp ((const char *) s1
, (const char *) s2
) == 0;
994 create_symbol_htab (void)
996 return htab_create_alloc (16, htab_hash_string
, eq_string
, NULL
, xcalloc
, free
);
1000 create_symbol_htabs (void)
1002 strip_specific_htab
= create_symbol_htab ();
1003 strip_unneeded_htab
= create_symbol_htab ();
1004 keep_specific_htab
= create_symbol_htab ();
1005 localize_specific_htab
= create_symbol_htab ();
1006 globalize_specific_htab
= create_symbol_htab ();
1007 keepglobal_specific_htab
= create_symbol_htab ();
1008 weaken_specific_htab
= create_symbol_htab ();
1009 redefine_specific_htab
= create_symbol2redef_htab ();
1010 /* As there is no bidirectional hash table in libiberty, need a reverse table
1011 to check duplicated target string. */
1012 redefine_specific_reverse_htab
= create_symbol_htab ();
1015 /* Add a symbol to strip_specific_list. */
1018 add_specific_symbol (const char *name
, htab_t htab
)
1020 *htab_find_slot (htab
, name
, INSERT
) = (char *) name
;
1023 /* Like add_specific_symbol, but the element type is void *. */
1026 add_specific_symbol_node (const void *node
, htab_t htab
)
1028 *htab_find_slot (htab
, node
, INSERT
) = (void *) node
;
1031 /* Add symbols listed in `filename' to strip_specific_list. */
1033 #define IS_WHITESPACE(c) ((c) == ' ' || (c) == '\t')
1034 #define IS_LINE_TERMINATOR(c) ((c) == '\n' || (c) == '\r' || (c) == '\0')
1037 add_specific_symbols (const char *filename
, htab_t htab
)
1043 unsigned int line_count
;
1045 size
= get_file_size (filename
);
1052 buffer
= (char *) xmalloc (size
+ 2);
1053 f
= fopen (filename
, FOPEN_RT
);
1055 fatal (_("cannot open '%s': %s"), filename
, strerror (errno
));
1057 if (fread (buffer
, 1, size
, f
) == 0 || ferror (f
))
1058 fatal (_("%s: fread failed"), filename
);
1061 buffer
[size
] = '\n';
1062 buffer
[size
+ 1] = '\0';
1066 for (line
= buffer
; * line
!= '\0'; line
++)
1071 int finished
= FALSE
;
1073 for (eol
= line
;; eol
++)
1079 /* Cope with \n\r. */
1087 /* Cope with \r\n. */
1098 /* Line comment, Terminate the line here, in case a
1099 name is present and then allow the rest of the
1100 loop to find the real end of the line. */
1112 /* A name may now exist somewhere between 'line' and 'eol'.
1113 Strip off leading whitespace and trailing whitespace,
1114 then add it to the list. */
1115 for (name
= line
; IS_WHITESPACE (* name
); name
++)
1117 for (name_end
= name
;
1118 (! IS_WHITESPACE (* name_end
))
1119 && (! IS_LINE_TERMINATOR (* name_end
));
1123 if (! IS_LINE_TERMINATOR (* name_end
))
1127 for (extra
= name_end
+ 1; IS_WHITESPACE (* extra
); extra
++)
1130 if (! IS_LINE_TERMINATOR (* extra
))
1131 non_fatal (_("%s:%d: Ignoring rubbish found on this line"),
1132 filename
, line_count
);
1137 if (name_end
> name
)
1138 add_specific_symbol (name
, htab
);
1140 /* Advance line pointer to end of line. The 'eol ++' in the for
1141 loop above will then advance us to the start of the next line. */
1147 /* See whether a symbol should be stripped or kept
1148 based on strip_specific_list and keep_symbols. */
1151 is_specified_symbol_predicate (void **slot
, void *data
)
1153 struct is_specified_symbol_predicate_data
*d
=
1154 (struct is_specified_symbol_predicate_data
*) data
;
1155 const char *slot_name
= (char *) *slot
;
1157 if (*slot_name
!= '!')
1159 if (! fnmatch (slot_name
, d
->name
, 0))
1162 /* Continue traversal, there might be a non-match rule. */
1168 if (! fnmatch (slot_name
+ 1, d
->name
, 0))
1171 /* Stop traversal. */
1176 /* Continue traversal. */
1181 is_specified_symbol (const char *name
, htab_t htab
)
1185 struct is_specified_symbol_predicate_data data
;
1190 htab_traverse (htab
, is_specified_symbol_predicate
, &data
);
1195 return htab_find (htab
, name
) != NULL
;
1198 /* Return a pointer to the symbol used as a signature for GROUP. */
1201 group_signature (asection
*group
)
1203 bfd
*abfd
= group
->owner
;
1204 Elf_Internal_Shdr
*ghdr
;
1206 /* PR 20089: An earlier error may have prevented us from loading the symbol table. */
1210 if (bfd_get_flavour (abfd
) != bfd_target_elf_flavour
)
1213 ghdr
= &elf_section_data (group
)->this_hdr
;
1214 if (ghdr
->sh_link
== elf_onesymtab (abfd
))
1216 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1217 Elf_Internal_Shdr
*symhdr
= &elf_symtab_hdr (abfd
);
1219 if (ghdr
->sh_info
> 0
1220 && ghdr
->sh_info
< symhdr
->sh_size
/ bed
->s
->sizeof_sym
)
1221 return isympp
[ghdr
->sh_info
- 1];
1226 /* Return TRUE if the section is a DWO section. */
1229 is_dwo_section (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
1231 const char *name
= bfd_get_section_name (abfd
, sec
);
1232 int len
= strlen (name
);
1234 return strncmp (name
+ len
- 4, ".dwo", 4) == 0;
1237 /* Return TRUE if section SEC is in the update list. */
1240 is_update_section (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
1242 if (update_sections
!= NULL
)
1244 struct section_add
*pupdate
;
1246 for (pupdate
= update_sections
;
1248 pupdate
= pupdate
->next
)
1250 if (strcmp (sec
->name
, pupdate
->name
) == 0)
1259 is_merged_note_section (bfd
* abfd
, asection
* sec
)
1262 && bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1263 && elf_section_data (sec
)->this_hdr
.sh_type
== SHT_NOTE
1264 /* FIXME: We currently only support merging GNU_BUILD_NOTEs.
1265 We should add support for more note types. */
1266 && ((elf_section_data (sec
)->this_hdr
.sh_flags
& SHF_GNU_BUILD_NOTE
) != 0
1267 /* Old versions of GAS (prior to 2.27) could not set the section
1268 flags to OS-specific values, so we also accept sections with the
1270 || (strcmp (sec
->name
, GNU_BUILD_ATTRS_SECTION_NAME
) == 0)))
1276 /* See if a non-group section is being removed. */
1279 is_strip_section_1 (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
1281 if (sections_removed
|| sections_copied
)
1283 struct section_list
*p
;
1284 struct section_list
*q
;
1286 p
= find_section_list (bfd_get_section_name (abfd
, sec
), FALSE
,
1287 SECTION_CONTEXT_REMOVE
);
1288 q
= find_section_list (bfd_get_section_name (abfd
, sec
), FALSE
,
1289 SECTION_CONTEXT_COPY
);
1292 fatal (_("error: section %s matches both remove and copy options"),
1293 bfd_get_section_name (abfd
, sec
));
1294 if (p
&& is_update_section (abfd
, sec
))
1295 fatal (_("error: section %s matches both update and remove options"),
1296 bfd_get_section_name (abfd
, sec
));
1300 if (sections_copied
&& q
== NULL
)
1304 if ((bfd_get_section_flags (abfd
, sec
) & SEC_DEBUGGING
) != 0)
1306 if (strip_symbols
== STRIP_DEBUG
1307 || strip_symbols
== STRIP_UNNEEDED
1308 || strip_symbols
== STRIP_ALL
1309 || discard_locals
== LOCALS_ALL
1310 || convert_debugging
)
1312 /* By default we don't want to strip .reloc section.
1313 This section has for pe-coff special meaning. See
1314 pe-dll.c file in ld, and peXXigen.c in bfd for details. */
1315 if (strcmp (bfd_get_section_name (abfd
, sec
), ".reloc") != 0)
1319 if (strip_symbols
== STRIP_DWO
)
1320 return is_dwo_section (abfd
, sec
);
1322 if (strip_symbols
== STRIP_NONDEBUG
)
1326 if (strip_symbols
== STRIP_NONDWO
)
1327 return !is_dwo_section (abfd
, sec
);
1332 /* See if a section is being removed. */
1335 is_strip_section (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
1337 if (is_strip_section_1 (abfd
, sec
))
1340 if ((bfd_get_section_flags (abfd
, sec
) & SEC_GROUP
) != 0)
1344 asection
*elt
, *first
;
1347 If we are going to strip the group signature symbol, then
1348 strip the group section too. */
1349 gsym
= group_signature (sec
);
1354 if ((strip_symbols
== STRIP_ALL
1355 && !is_specified_symbol (gname
, keep_specific_htab
))
1356 || is_specified_symbol (gname
, strip_specific_htab
))
1359 /* Remove the group section if all members are removed. */
1360 first
= elt
= elf_next_in_group (sec
);
1363 if (!is_strip_section_1 (abfd
, elt
))
1365 elt
= elf_next_in_group (elt
);
1377 is_nondebug_keep_contents_section (bfd
*ibfd
, asection
*isection
)
1379 /* Always keep ELF note sections. */
1380 if (ibfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1381 return (elf_section_type (isection
) == SHT_NOTE
);
1383 /* Always keep the .buildid section for PE/COFF.
1385 Strictly, this should be written "always keep the section storing the debug
1386 directory", but that may be the .text section for objects produced by some
1387 tools, which it is not sensible to keep. */
1388 if (ibfd
->xvec
->flavour
== bfd_target_coff_flavour
)
1389 return (strcmp (bfd_get_section_name (ibfd
, isection
), ".buildid") == 0);
1394 /* Return true if SYM is a hidden symbol. */
1397 is_hidden_symbol (asymbol
*sym
)
1399 elf_symbol_type
*elf_sym
;
1401 elf_sym
= elf_symbol_from (sym
->the_bfd
, sym
);
1402 if (elf_sym
!= NULL
)
1403 switch (ELF_ST_VISIBILITY (elf_sym
->internal_elf_sym
.st_other
))
1413 need_sym_before (struct addsym_node
**node
, const char *sym
)
1416 struct addsym_node
*ptr
= add_sym_list
;
1418 /* 'othersym' symbols are at the front of the list. */
1419 for (count
= 0; count
< add_symbols
; count
++)
1423 else if (strcmp (ptr
->othersym
, sym
) == 0)
1425 free (ptr
->othersym
);
1426 ptr
->othersym
= ""; /* Empty name is hopefully never a valid symbol name. */
1436 create_new_symbol (struct addsym_node
*ptr
, bfd
*obfd
)
1438 asymbol
*sym
= bfd_make_empty_symbol (obfd
);
1440 bfd_asymbol_name (sym
) = ptr
->symdef
;
1441 sym
->value
= ptr
->symval
;
1442 sym
->flags
= ptr
->flags
;
1445 asection
*sec
= bfd_get_section_by_name (obfd
, ptr
->section
);
1447 fatal (_("Section %s not found"), ptr
->section
);
1451 sym
->section
= bfd_abs_section_ptr
;
1455 /* Choose which symbol entries to copy; put the result in OSYMS.
1456 We don't copy in place, because that confuses the relocs.
1457 Return the number of symbols to print. */
1460 filter_symbols (bfd
*abfd
, bfd
*obfd
, asymbol
**osyms
,
1461 asymbol
**isyms
, long symcount
)
1463 asymbol
**from
= isyms
, **to
= osyms
;
1464 long src_count
= 0, dst_count
= 0;
1465 int relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
1467 for (; src_count
< symcount
; src_count
++)
1469 asymbol
*sym
= from
[src_count
];
1470 flagword flags
= sym
->flags
;
1471 char *name
= (char *) bfd_asymbol_name (sym
);
1473 bfd_boolean used_in_reloc
= FALSE
;
1474 bfd_boolean undefined
;
1475 bfd_boolean rem_leading_char
;
1476 bfd_boolean add_leading_char
;
1478 undefined
= bfd_is_und_section (bfd_get_section (sym
));
1482 struct addsym_node
*ptr
;
1484 if (need_sym_before (&ptr
, name
))
1485 to
[dst_count
++] = create_new_symbol (ptr
, obfd
);
1488 if (htab_elements (redefine_specific_htab
) || section_rename_list
)
1492 new_name
= (char *) lookup_sym_redefinition (name
);
1493 if (new_name
== name
1494 && (flags
& BSF_SECTION_SYM
) != 0)
1495 new_name
= (char *) find_section_rename (name
, NULL
);
1496 bfd_asymbol_name (sym
) = new_name
;
1500 /* Check if we will remove the current leading character. */
1502 (name
[0] == bfd_get_symbol_leading_char (abfd
))
1503 && (change_leading_char
1504 || (remove_leading_char
1505 && ((flags
& (BSF_GLOBAL
| BSF_WEAK
)) != 0
1507 || bfd_is_com_section (bfd_get_section (sym
)))));
1509 /* Check if we will add a new leading character. */
1512 && (bfd_get_symbol_leading_char (obfd
) != '\0')
1513 && (bfd_get_symbol_leading_char (abfd
) == '\0'
1514 || (name
[0] == bfd_get_symbol_leading_char (abfd
)));
1516 /* Short circuit for change_leading_char if we can do it in-place. */
1517 if (rem_leading_char
&& add_leading_char
&& !prefix_symbols_string
)
1519 name
[0] = bfd_get_symbol_leading_char (obfd
);
1520 bfd_asymbol_name (sym
) = name
;
1521 rem_leading_char
= FALSE
;
1522 add_leading_char
= FALSE
;
1525 /* Remove leading char. */
1526 if (rem_leading_char
)
1527 bfd_asymbol_name (sym
) = ++name
;
1529 /* Add new leading char and/or prefix. */
1530 if (add_leading_char
|| prefix_symbols_string
)
1534 ptr
= n
= (char *) xmalloc (1 + strlen (prefix_symbols_string
)
1535 + strlen (name
) + 1);
1536 if (add_leading_char
)
1537 *ptr
++ = bfd_get_symbol_leading_char (obfd
);
1539 if (prefix_symbols_string
)
1541 strcpy (ptr
, prefix_symbols_string
);
1542 ptr
+= strlen (prefix_symbols_string
);
1546 bfd_asymbol_name (sym
) = n
;
1550 if (strip_symbols
== STRIP_ALL
)
1552 else if ((flags
& BSF_KEEP
) != 0 /* Used in relocation. */
1553 || ((flags
& BSF_SECTION_SYM
) != 0
1554 && ((*bfd_get_section (sym
)->symbol_ptr_ptr
)->flags
1558 used_in_reloc
= TRUE
;
1560 else if (relocatable
/* Relocatable file. */
1561 && ((flags
& (BSF_GLOBAL
| BSF_WEAK
)) != 0
1562 || bfd_is_com_section (bfd_get_section (sym
))))
1564 else if (bfd_decode_symclass (sym
) == 'I')
1565 /* Global symbols in $idata sections need to be retained
1566 even if relocatable is FALSE. External users of the
1567 library containing the $idata section may reference these
1570 else if ((flags
& BSF_GLOBAL
) != 0 /* Global symbol. */
1571 || (flags
& BSF_WEAK
) != 0
1573 || bfd_is_com_section (bfd_get_section (sym
)))
1574 keep
= strip_symbols
!= STRIP_UNNEEDED
;
1575 else if ((flags
& BSF_DEBUGGING
) != 0) /* Debugging symbol. */
1576 keep
= (strip_symbols
!= STRIP_DEBUG
1577 && strip_symbols
!= STRIP_UNNEEDED
1578 && ! convert_debugging
);
1579 else if (bfd_coff_get_comdat_section (abfd
, bfd_get_section (sym
)))
1580 /* COMDAT sections store special information in local
1581 symbols, so we cannot risk stripping any of them. */
1583 else /* Local symbol. */
1584 keep
= (strip_symbols
!= STRIP_UNNEEDED
1585 && (discard_locals
!= LOCALS_ALL
1586 && (discard_locals
!= LOCALS_START_L
1587 || ! bfd_is_local_label (abfd
, sym
))));
1589 if (keep
&& is_specified_symbol (name
, strip_specific_htab
))
1591 /* There are multiple ways to set 'keep' above, but if it
1592 was the relocatable symbol case, then that's an error. */
1595 non_fatal (_("not stripping symbol `%s' because it is named in a relocation"), name
);
1603 && !(flags
& BSF_KEEP
)
1604 && is_specified_symbol (name
, strip_unneeded_htab
))
1608 && ((keep_file_symbols
&& (flags
& BSF_FILE
))
1609 || is_specified_symbol (name
, keep_specific_htab
)))
1612 if (keep
&& is_strip_section (abfd
, bfd_get_section (sym
)))
1617 if ((flags
& BSF_GLOBAL
) != 0
1618 && (weaken
|| is_specified_symbol (name
, weaken_specific_htab
)))
1620 sym
->flags
&= ~ BSF_GLOBAL
;
1621 sym
->flags
|= BSF_WEAK
;
1625 && (flags
& (BSF_GLOBAL
| BSF_WEAK
))
1626 && (is_specified_symbol (name
, localize_specific_htab
)
1627 || (htab_elements (keepglobal_specific_htab
) != 0
1628 && ! is_specified_symbol (name
, keepglobal_specific_htab
))
1629 || (localize_hidden
&& is_hidden_symbol (sym
))))
1631 sym
->flags
&= ~ (BSF_GLOBAL
| BSF_WEAK
);
1632 sym
->flags
|= BSF_LOCAL
;
1636 && (flags
& BSF_LOCAL
)
1637 && is_specified_symbol (name
, globalize_specific_htab
))
1639 sym
->flags
&= ~ BSF_LOCAL
;
1640 sym
->flags
|= BSF_GLOBAL
;
1643 to
[dst_count
++] = sym
;
1648 struct addsym_node
*ptr
= add_sym_list
;
1650 for (src_count
= 0; src_count
< add_symbols
; src_count
++)
1654 if (strcmp (ptr
->othersym
, ""))
1655 fatal (_("'before=%s' not found"), ptr
->othersym
);
1658 to
[dst_count
++] = create_new_symbol (ptr
, obfd
);
1664 to
[dst_count
] = NULL
;
1669 /* Find the redefined name of symbol SOURCE. */
1672 lookup_sym_redefinition (const char *source
)
1674 struct redefine_node key_node
= {(char *) source
, NULL
};
1675 struct redefine_node
*redef_node
1676 = (struct redefine_node
*) htab_find (redefine_specific_htab
, &key_node
);
1678 return redef_node
== NULL
? source
: redef_node
->target
;
1681 /* Insert a node into symbol redefine hash tabel. */
1684 add_redefine_and_check (const char *cause
, const char *source
,
1687 struct redefine_node
*new_node
1688 = (struct redefine_node
*) xmalloc (sizeof (struct redefine_node
));
1690 new_node
->source
= strdup (source
);
1691 new_node
->target
= strdup (target
);
1693 if (htab_find (redefine_specific_htab
, new_node
) != HTAB_EMPTY_ENTRY
)
1694 fatal (_("%s: Multiple redefinition of symbol \"%s\""),
1697 if (htab_find (redefine_specific_reverse_htab
, target
) != HTAB_EMPTY_ENTRY
)
1698 fatal (_("%s: Symbol \"%s\" is target of more than one redefinition"),
1701 /* Insert the NEW_NODE into hash table for quick search. */
1702 add_specific_symbol_node (new_node
, redefine_specific_htab
);
1704 /* Insert the target string into the reverse hash table, this is needed for
1705 duplicated target string check. */
1706 add_specific_symbol (new_node
->target
, redefine_specific_reverse_htab
);
1710 /* Handle the --redefine-syms option. Read lines containing "old new"
1711 from the file, and add them to the symbol redefine list. */
1714 add_redefine_syms_file (const char *filename
)
1723 file
= fopen (filename
, "r");
1725 fatal (_("couldn't open symbol redefinition file %s (error: %s)"),
1726 filename
, strerror (errno
));
1729 buf
= (char *) xmalloc (bufsize
+ 1 /* For the terminating NUL. */);
1737 /* Collect the input symbol name. */
1738 while (! IS_WHITESPACE (c
) && ! IS_LINE_TERMINATOR (c
) && c
!= EOF
)
1746 buf
= (char *) xrealloc (buf
, bufsize
+ 1);
1754 /* Eat white space between the symbol names. */
1755 while (IS_WHITESPACE (c
))
1757 if (c
== '#' || IS_LINE_TERMINATOR (c
))
1762 /* Collect the output symbol name. */
1764 while (! IS_WHITESPACE (c
) && ! IS_LINE_TERMINATOR (c
) && c
!= EOF
)
1772 buf
= (char *) xrealloc (buf
, bufsize
+ 1);
1780 /* Eat white space at end of line. */
1781 while (! IS_LINE_TERMINATOR(c
) && c
!= EOF
&& IS_WHITESPACE (c
))
1786 if ((c
== '\r' && (c
= getc (file
)) == '\n')
1787 || c
== '\n' || c
== EOF
)
1790 /* Append the redefinition to the list. */
1792 add_redefine_and_check (filename
, &buf
[0], &buf
[outsym_off
]);
1803 fatal (_("%s:%d: garbage found at end of line"), filename
, lineno
);
1805 if (len
!= 0 && (outsym_off
== 0 || outsym_off
== len
))
1806 fatal (_("%s:%d: missing new symbol name"), filename
, lineno
);
1809 /* Eat the rest of the line and finish it. */
1810 while (c
!= '\n' && c
!= EOF
)
1816 fatal (_("%s:%d: premature end of file"), filename
, lineno
);
1821 /* Copy unknown object file IBFD onto OBFD.
1822 Returns TRUE upon success, FALSE otherwise. */
1825 copy_unknown_object (bfd
*ibfd
, bfd
*obfd
)
1833 if (bfd_stat_arch_elt (ibfd
, &buf
) != 0)
1835 bfd_nonfatal_message (NULL
, ibfd
, NULL
, NULL
);
1842 non_fatal (_("stat returns negative size for `%s'"),
1843 bfd_get_archive_filename (ibfd
));
1847 if (bfd_seek (ibfd
, (file_ptr
) 0, SEEK_SET
) != 0)
1849 bfd_nonfatal (bfd_get_archive_filename (ibfd
));
1854 printf (_("copy from `%s' [unknown] to `%s' [unknown]\n"),
1855 bfd_get_archive_filename (ibfd
), bfd_get_filename (obfd
));
1857 cbuf
= (char *) xmalloc (BUFSIZE
);
1859 while (ncopied
< size
)
1861 tocopy
= size
- ncopied
;
1862 if (tocopy
> BUFSIZE
)
1865 if (bfd_bread (cbuf
, (bfd_size_type
) tocopy
, ibfd
)
1866 != (bfd_size_type
) tocopy
)
1868 bfd_nonfatal_message (NULL
, ibfd
, NULL
, NULL
);
1873 if (bfd_bwrite (cbuf
, (bfd_size_type
) tocopy
, obfd
)
1874 != (bfd_size_type
) tocopy
)
1876 bfd_nonfatal_message (NULL
, obfd
, NULL
, NULL
);
1884 /* We should at least to be able to read it back when copying an
1885 unknown object in an archive. */
1886 chmod (bfd_get_filename (obfd
), buf
.st_mode
| S_IRUSR
);
1891 /* Returns the number of bytes needed to store VAL. */
1893 static inline unsigned int
1894 num_bytes (unsigned long val
)
1896 unsigned int count
= 0;
1898 /* FIXME: There must be a faster way to do this. */
1907 typedef struct objcopy_internal_note
1909 Elf_Internal_Note note
;
1912 bfd_boolean modified
;
1913 } objcopy_internal_note
;
1915 /* Returns TRUE if a gap does, or could, exist between the address range
1916 covered by PNOTE1 and PNOTE2. */
1919 gap_exists (objcopy_internal_note
* pnote1
,
1920 objcopy_internal_note
* pnote2
)
1922 /* Without range end notes, we assume that a gap might exist. */
1923 if (pnote1
->end
== 0 || pnote2
->end
== 0)
1926 /* FIXME: Alignment of 16 bytes taken from x86_64 binaries.
1927 Really we should extract the alignment of the section covered by the notes. */
1928 return BFD_ALIGN (pnote1
->end
, 16) < pnote2
->start
;
1932 is_open_note (objcopy_internal_note
* pnote
)
1934 return (pnote
->note
.type
== NT_GNU_BUILD_ATTRIBUTE_OPEN
);
1938 is_func_note (objcopy_internal_note
* pnote
)
1940 return (pnote
->note
.type
== NT_GNU_BUILD_ATTRIBUTE_FUNC
);
1944 is_64bit (bfd
* abfd
)
1946 /* Should never happen, but let's be paranoid. */
1947 if (bfd_get_flavour (abfd
) != bfd_target_elf_flavour
)
1950 return elf_elfheader (abfd
)->e_ident
[EI_CLASS
] == ELFCLASS64
;
1953 /* Merge the notes on SEC, removing redundant entries.
1954 Returns the new, smaller size of the section upon success. */
1956 static bfd_size_type
1957 merge_gnu_build_notes (bfd
* abfd
, asection
* sec
, bfd_size_type size
, bfd_byte
* contents
)
1959 objcopy_internal_note
* pnotes_end
;
1960 objcopy_internal_note
* pnotes
= NULL
;
1961 objcopy_internal_note
* pnote
;
1962 bfd_size_type remain
= size
;
1963 unsigned version_1_seen
= 0;
1964 unsigned version_2_seen
= 0;
1965 unsigned version_3_seen
= 0;
1966 bfd_boolean duplicate_found
= FALSE
;
1967 const char * err
= NULL
;
1968 bfd_byte
* in
= contents
;
1969 int attribute_type_byte
;
1971 unsigned long previous_func_start
= 0;
1972 unsigned long previous_open_start
= 0;
1973 unsigned long previous_func_end
= 0;
1974 unsigned long previous_open_end
= 0;
1978 relsize
= bfd_get_reloc_upper_bound (abfd
, sec
);
1984 /* If there are relocs associated with this section then we
1985 cannot safely merge it. */
1986 relpp
= (arelent
**) xmalloc (relsize
);
1987 relcount
= bfd_canonicalize_reloc (abfd
, sec
, relpp
, isympp
);
1993 /* Make a copy of the notes and convert to our internal format.
1994 Minimum size of a note is 12 bytes. */
1995 pnote
= pnotes
= (objcopy_internal_note
*) xcalloc ((size
/ 12), sizeof (* pnote
));
1996 while (remain
>= 12)
2000 pnote
->note
.namesz
= (bfd_get_32 (abfd
, in
) + 3) & ~3;
2001 pnote
->note
.descsz
= (bfd_get_32 (abfd
, in
+ 4) + 3) & ~3;
2002 pnote
->note
.type
= bfd_get_32 (abfd
, in
+ 8);
2004 if (pnote
->note
.type
!= NT_GNU_BUILD_ATTRIBUTE_OPEN
2005 && pnote
->note
.type
!= NT_GNU_BUILD_ATTRIBUTE_FUNC
)
2007 err
= _("corrupt GNU build attribute note: wrong note type");
2011 if (pnote
->note
.namesz
+ pnote
->note
.descsz
+ 12 > remain
)
2013 err
= _("corrupt GNU build attribute note: note too big");
2017 if (pnote
->note
.namesz
< 2)
2019 err
= _("corrupt GNU build attribute note: name too small");
2023 pnote
->note
.namedata
= (char *)(in
+ 12);
2024 pnote
->note
.descdata
= (char *)(in
+ 12 + pnote
->note
.namesz
);
2026 remain
-= 12 + pnote
->note
.namesz
+ pnote
->note
.descsz
;
2027 in
+= 12 + pnote
->note
.namesz
+ pnote
->note
.descsz
;
2029 if (pnote
->note
.namesz
> 2
2030 && pnote
->note
.namedata
[0] == '$'
2031 && pnote
->note
.namedata
[1] == GNU_BUILD_ATTRIBUTE_VERSION
2032 && pnote
->note
.namedata
[2] == '1')
2034 else if (pnote
->note
.namesz
> 4
2035 && pnote
->note
.namedata
[0] == 'G'
2036 && pnote
->note
.namedata
[1] == 'A'
2037 && pnote
->note
.namedata
[2] == '$'
2038 && pnote
->note
.namedata
[3] == GNU_BUILD_ATTRIBUTE_VERSION
)
2040 if (pnote
->note
.namedata
[4] == '2')
2042 else if (pnote
->note
.namedata
[4] == '3')
2046 err
= _("corrupt GNU build attribute note: unsupported version");
2051 switch (pnote
->note
.descsz
)
2058 start
= bfd_get_32 (abfd
, pnote
->note
.descdata
);
2059 /* FIXME: For version 1 and 2 notes we should try to
2060 calculate the end address by finding a symbol whose
2061 value is START, and then adding in its size.
2063 For now though, since v1 and v2 was not intended to
2064 handle gaps, we chose an artificially large end
2070 if (! is_64bit (abfd
))
2072 start
= bfd_get_32 (abfd
, pnote
->note
.descdata
);
2073 end
= bfd_get_32 (abfd
, pnote
->note
.descdata
+ 4);
2077 start
= bfd_get_64 (abfd
, pnote
->note
.descdata
);
2078 /* FIXME: For version 1 and 2 notes we should try to
2079 calculate the end address by finding a symbol whose
2080 value is START, and then adding in its size.
2082 For now though, since v1 and v2 was not intended to
2083 handle gaps, we chose an artificially large end
2090 start
= bfd_get_64 (abfd
, pnote
->note
.descdata
);
2091 end
= bfd_get_64 (abfd
, pnote
->note
.descdata
+ 8);
2095 err
= _("corrupt GNU build attribute note: bad description size");
2099 if (is_open_note (pnote
))
2102 previous_open_start
= start
;
2104 pnote
->start
= previous_open_start
;
2107 previous_open_end
= end
;
2109 pnote
->end
= previous_open_end
;
2114 previous_func_start
= start
;
2116 pnote
->start
= previous_func_start
;
2119 previous_func_end
= end
;
2121 pnote
->end
= previous_func_end
;
2124 if (pnote
->note
.namedata
[pnote
->note
.namesz
- 1] != 0)
2126 err
= _("corrupt GNU build attribute note: name not NUL terminated");
2135 /* Check that the notes are valid. */
2138 err
= _("corrupt GNU build attribute notes: excess data at end");
2142 if (version_1_seen
== 0 && version_2_seen
== 0 && version_3_seen
== 0)
2144 err
= _("bad GNU build attribute notes: no known versions detected");
2148 if ((version_1_seen
> 0 && version_2_seen
> 0)
2149 || (version_1_seen
> 0 && version_3_seen
> 0)
2150 || (version_2_seen
> 0 && version_3_seen
> 0))
2152 err
= _("bad GNU build attribute notes: multiple different versions");
2156 /* Merging is only needed if there is more than one version note... */
2157 if (version_1_seen
== 1 || version_2_seen
== 1 || version_3_seen
== 1)
2160 attribute_type_byte
= version_1_seen
? 1 : 3;
2161 val_start
= attribute_type_byte
+ 1;
2163 /* The first note should be the first version note. */
2164 if (pnotes
[0].note
.namedata
[attribute_type_byte
] != GNU_BUILD_ATTRIBUTE_VERSION
)
2166 err
= _("bad GNU build attribute notes: first note not version note");
2170 /* Now merge the notes. The rules are:
2171 1. Preserve the ordering of the notes.
2172 2. Preserve any NT_GNU_BUILD_ATTRIBUTE_FUNC notes.
2173 3. Eliminate any NT_GNU_BUILD_ATTRIBUTE_OPEN notes that have the same
2174 full name field as the immediately preceeding note with the same type
2175 of name and whose address ranges coincide.
2176 IE - it there are gaps in the coverage of the notes, then these gaps
2178 4. Combine the numeric value of any NT_GNU_BUILD_ATTRIBUTE_OPEN notes
2179 of type GNU_BUILD_ATTRIBUTE_STACK_SIZE.
2180 5. If an NT_GNU_BUILD_ATTRIBUTE_OPEN note is going to be preserved and
2181 its description field is empty then the nearest preceeding OPEN note
2182 with a non-empty description field must also be preserved *OR* the
2183 description field of the note must be changed to contain the starting
2184 address to which it refers. */
2185 for (pnote
= pnotes
+ 1; pnote
< pnotes_end
; pnote
++)
2188 objcopy_internal_note
* back
;
2189 objcopy_internal_note
* prev_open_with_range
= NULL
;
2191 /* Rule 2 - preserve function notes. */
2192 if (! is_open_note (pnote
))
2195 note_type
= pnote
->note
.namedata
[attribute_type_byte
];
2197 /* Scan backwards from pnote, looking for duplicates.
2198 Clear the type field of any found - but do not delete them just yet. */
2199 for (back
= pnote
- 1; back
>= pnotes
; back
--)
2201 int back_type
= back
->note
.namedata
[attribute_type_byte
];
2203 /* If this is the first open note with an address
2204 range that we have encountered then record it. */
2205 if (prev_open_with_range
== NULL
2206 && back
->note
.descsz
> 0
2207 && ! is_func_note (back
))
2208 prev_open_with_range
= back
;
2210 if (! is_open_note (back
))
2213 /* If the two notes are different then keep on searching. */
2214 if (back_type
!= note_type
)
2217 /* Rule 4 - combine stack size notes. */
2218 if (back_type
== GNU_BUILD_ATTRIBUTE_STACK_SIZE
)
2220 unsigned char * name
;
2221 unsigned long note_val
;
2222 unsigned long back_val
;
2227 for (shift
= 0, note_val
= 0,
2228 bytes
= pnote
->note
.namesz
- val_start
,
2229 name
= (unsigned char *) pnote
->note
.namedata
+ val_start
;
2232 byte
= (* name
++) & 0xff;
2233 note_val
|= byte
<< shift
;
2237 for (shift
= 0, back_val
= 0,
2238 bytes
= back
->note
.namesz
- val_start
,
2239 name
= (unsigned char *) back
->note
.namedata
+ val_start
;
2242 byte
= (* name
++) & 0xff;
2243 back_val
|= byte
<< shift
;
2247 back_val
+= note_val
;
2248 if (num_bytes (back_val
) >= back
->note
.namesz
- val_start
)
2250 /* We have a problem - the new value requires more bytes of
2251 storage in the name field than are available. Currently
2252 we have no way of fixing this, so we just preserve both
2257 /* Write the new val into back. */
2258 name
= (unsigned char *) back
->note
.namedata
+ val_start
;
2259 while (name
< (unsigned char *) back
->note
.namedata
2260 + back
->note
.namesz
)
2262 byte
= back_val
& 0xff;
2269 duplicate_found
= TRUE
;
2270 pnote
->note
.type
= 0;
2274 /* Rule 3 - combine identical open notes. */
2275 if (back
->note
.namesz
== pnote
->note
.namesz
2276 && memcmp (back
->note
.namedata
,
2277 pnote
->note
.namedata
, back
->note
.namesz
) == 0
2278 && ! gap_exists (back
, pnote
))
2280 duplicate_found
= TRUE
;
2281 pnote
->note
.type
= 0;
2283 if (pnote
->end
> back
->end
)
2284 back
->end
= pnote
->end
;
2287 back
->modified
= TRUE
;
2291 /* Rule 5 - Since we are keeping this note we must check to see
2292 if its description refers back to an earlier OPEN version
2293 note that has been scheduled for deletion. If so then we
2294 must make sure that version note is also preserved. */
2297 /* As of version 3 we can just
2298 move the range into the note. */
2299 pnote
->modified
= TRUE
;
2300 pnote
->note
.type
= NT_GNU_BUILD_ATTRIBUTE_FUNC
;
2301 back
->modified
= TRUE
;
2302 back
->note
.type
= NT_GNU_BUILD_ATTRIBUTE_FUNC
;
2306 if (pnote
->note
.descsz
== 0
2307 && prev_open_with_range
!= NULL
2308 && prev_open_with_range
->note
.type
== 0)
2309 prev_open_with_range
->note
.type
= NT_GNU_BUILD_ATTRIBUTE_OPEN
;
2312 /* We have found a similar attribute but the details do not match.
2313 Stop searching backwards. */
2318 if (duplicate_found
)
2320 bfd_byte
* new_contents
;
2323 bfd_size_type new_size
;
2324 bfd_vma prev_start
= 0;
2325 bfd_vma prev_end
= 0;
2327 /* Eliminate the duplicates. */
2328 new = new_contents
= xmalloc (size
);
2329 for (pnote
= pnotes
, old
= contents
;
2333 bfd_size_type note_size
= 12 + pnote
->note
.namesz
+ pnote
->note
.descsz
;
2335 if (pnote
->note
.type
!= 0)
2337 if (pnote
->modified
)
2339 /* If the note has been modified then we must copy it by
2340 hand, potentially adding in a new description field. */
2341 if (pnote
->start
== prev_start
&& pnote
->end
== prev_end
)
2343 bfd_put_32 (abfd
, pnote
->note
.namesz
, new);
2344 bfd_put_32 (abfd
, 0, new + 4);
2345 bfd_put_32 (abfd
, pnote
->note
.type
, new + 8);
2347 memcpy (new, pnote
->note
.namedata
, pnote
->note
.namesz
);
2348 new += pnote
->note
.namesz
;
2352 bfd_put_32 (abfd
, pnote
->note
.namesz
, new);
2353 bfd_put_32 (abfd
, is_64bit (abfd
) ? 16 : 8, new + 4);
2354 bfd_put_32 (abfd
, pnote
->note
.type
, new + 8);
2356 memcpy (new, pnote
->note
.namedata
, pnote
->note
.namesz
);
2357 new += pnote
->note
.namesz
;
2358 if (is_64bit (abfd
))
2360 bfd_put_64 (abfd
, pnote
->start
, new);
2361 bfd_put_64 (abfd
, pnote
->end
, new + 8);
2366 bfd_put_32 (abfd
, pnote
->start
, new);
2367 bfd_put_32 (abfd
, pnote
->end
, new + 4);
2374 memcpy (new, old
, note_size
);
2377 prev_start
= pnote
->start
;
2378 prev_end
= pnote
->end
;
2384 new_size
= new - new_contents
;
2385 memcpy (contents
, new_contents
, new_size
);
2387 free (new_contents
);
2393 bfd_set_error (bfd_error_bad_value
);
2394 bfd_nonfatal_message (NULL
, abfd
, sec
, err
);
2402 /* Copy object file IBFD onto OBFD.
2403 Returns TRUE upon success, FALSE otherwise. */
2406 copy_object (bfd
*ibfd
, bfd
*obfd
, const bfd_arch_info_type
*input_arch
)
2410 asection
**osections
= NULL
;
2412 asection
*gnu_debuglink_section
= NULL
;
2413 bfd_size_type
*gaps
= NULL
;
2414 bfd_size_type max_gap
= 0;
2417 enum bfd_architecture iarch
;
2421 if (ibfd
->xvec
->byteorder
!= obfd
->xvec
->byteorder
2422 && ibfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
2423 && obfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
)
2425 /* PR 17636: Call non-fatal so that we return to our parent who
2426 may need to tidy temporary files. */
2427 non_fatal (_("Unable to change endianness of input file(s)"));
2431 if (!bfd_set_format (obfd
, bfd_get_format (ibfd
)))
2433 bfd_nonfatal_message (NULL
, obfd
, NULL
, NULL
);
2437 if (ibfd
->sections
== NULL
)
2439 non_fatal (_("error: the input file '%s' has no sections"),
2440 bfd_get_archive_filename (ibfd
));
2444 if (ibfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
2446 if ((do_debug_sections
& compress
) != 0
2447 && do_debug_sections
!= compress
)
2449 non_fatal (_("--compress-debug-sections=[zlib|zlib-gnu|zlib-gabi] is unsupported on `%s'"),
2450 bfd_get_archive_filename (ibfd
));
2454 if (do_elf_stt_common
)
2456 non_fatal (_("--elf-stt-common=[yes|no] is unsupported on `%s'"),
2457 bfd_get_archive_filename (ibfd
));
2463 printf (_("copy from `%s' [%s] to `%s' [%s]\n"),
2464 bfd_get_archive_filename (ibfd
), bfd_get_target (ibfd
),
2465 bfd_get_filename (obfd
), bfd_get_target (obfd
));
2474 start
= bfd_get_start_address (ibfd
);
2475 start
+= change_start
;
2478 /* Neither the start address nor the flags
2479 need to be set for a core file. */
2480 if (bfd_get_format (obfd
) != bfd_core
)
2484 flags
= bfd_get_file_flags (ibfd
);
2485 flags
|= bfd_flags_to_set
;
2486 flags
&= ~bfd_flags_to_clear
;
2487 flags
&= bfd_applicable_file_flags (obfd
);
2489 if (strip_symbols
== STRIP_ALL
)
2490 flags
&= ~HAS_RELOC
;
2492 if (!bfd_set_start_address (obfd
, start
)
2493 || !bfd_set_file_flags (obfd
, flags
))
2495 bfd_nonfatal_message (NULL
, ibfd
, NULL
, NULL
);
2500 /* Copy architecture of input file to output file. */
2501 iarch
= bfd_get_arch (ibfd
);
2502 imach
= bfd_get_mach (ibfd
);
2505 if (bfd_get_arch_info (ibfd
) == NULL
2506 || bfd_get_arch_info (ibfd
)->arch
== bfd_arch_unknown
)
2508 iarch
= input_arch
->arch
;
2509 imach
= input_arch
->mach
;
2512 non_fatal (_("Input file `%s' ignores binary architecture parameter."),
2513 bfd_get_archive_filename (ibfd
));
2515 if (!bfd_set_arch_mach (obfd
, iarch
, imach
)
2516 && (ibfd
->target_defaulted
2517 || bfd_get_arch (ibfd
) != bfd_get_arch (obfd
)))
2519 if (bfd_get_arch (ibfd
) == bfd_arch_unknown
)
2520 non_fatal (_("Unable to recognise the format of the input file `%s'"),
2521 bfd_get_archive_filename (ibfd
));
2523 non_fatal (_("Output file cannot represent architecture `%s'"),
2524 bfd_printable_arch_mach (bfd_get_arch (ibfd
),
2525 bfd_get_mach (ibfd
)));
2529 if (!bfd_set_format (obfd
, bfd_get_format (ibfd
)))
2531 bfd_nonfatal_message (NULL
, ibfd
, NULL
, NULL
);
2535 if (bfd_get_flavour (obfd
) == bfd_target_coff_flavour
2536 && bfd_pei_p (obfd
))
2538 /* Set up PE parameters. */
2539 pe_data_type
*pe
= pe_data (obfd
);
2541 /* Copy PE parameters before changing them. */
2542 if (ibfd
->xvec
->flavour
== bfd_target_coff_flavour
2543 && bfd_pei_p (ibfd
))
2544 pe
->pe_opthdr
= pe_data (ibfd
)->pe_opthdr
;
2546 if (pe_file_alignment
!= (bfd_vma
) -1)
2547 pe
->pe_opthdr
.FileAlignment
= pe_file_alignment
;
2549 pe_file_alignment
= PE_DEF_FILE_ALIGNMENT
;
2551 if (pe_heap_commit
!= (bfd_vma
) -1)
2552 pe
->pe_opthdr
.SizeOfHeapCommit
= pe_heap_commit
;
2554 if (pe_heap_reserve
!= (bfd_vma
) -1)
2555 pe
->pe_opthdr
.SizeOfHeapCommit
= pe_heap_reserve
;
2557 if (pe_image_base
!= (bfd_vma
) -1)
2558 pe
->pe_opthdr
.ImageBase
= pe_image_base
;
2560 if (pe_section_alignment
!= (bfd_vma
) -1)
2561 pe
->pe_opthdr
.SectionAlignment
= pe_section_alignment
;
2563 pe_section_alignment
= PE_DEF_SECTION_ALIGNMENT
;
2565 if (pe_stack_commit
!= (bfd_vma
) -1)
2566 pe
->pe_opthdr
.SizeOfStackCommit
= pe_stack_commit
;
2568 if (pe_stack_reserve
!= (bfd_vma
) -1)
2569 pe
->pe_opthdr
.SizeOfStackCommit
= pe_stack_reserve
;
2571 if (pe_subsystem
!= -1)
2572 pe
->pe_opthdr
.Subsystem
= pe_subsystem
;
2574 if (pe_major_subsystem_version
!= -1)
2575 pe
->pe_opthdr
.MajorSubsystemVersion
= pe_major_subsystem_version
;
2577 if (pe_minor_subsystem_version
!= -1)
2578 pe
->pe_opthdr
.MinorSubsystemVersion
= pe_minor_subsystem_version
;
2580 if (pe_file_alignment
> pe_section_alignment
)
2582 char file_alignment
[20], section_alignment
[20];
2584 sprintf_vma (file_alignment
, pe_file_alignment
);
2585 sprintf_vma (section_alignment
, pe_section_alignment
);
2586 non_fatal (_("warning: file alignment (0x%s) > section alignment (0x%s)"),
2588 file_alignment
, section_alignment
);
2595 if (osympp
!= isympp
)
2601 symsize
= bfd_get_symtab_upper_bound (ibfd
);
2604 bfd_nonfatal_message (NULL
, ibfd
, NULL
, NULL
);
2608 osympp
= isympp
= (asymbol
**) xmalloc (symsize
);
2609 symcount
= bfd_canonicalize_symtab (ibfd
, isympp
);
2612 bfd_nonfatal_message (NULL
, ibfd
, NULL
, NULL
);
2615 /* PR 17512: file: d6323821
2616 If the symbol table could not be loaded do not pretend that we have
2617 any symbols. This trips us up later on when we load the relocs. */
2621 osympp
= isympp
= NULL
;
2624 /* BFD mandates that all output sections be created and sizes set before
2625 any output is done. Thus, we traverse all sections multiple times. */
2626 bfd_map_over_sections (ibfd
, setup_section
, obfd
);
2628 if (!extract_symbol
)
2629 setup_bfd_headers (ibfd
, obfd
);
2631 if (add_sections
!= NULL
)
2633 struct section_add
*padd
;
2634 struct section_list
*pset
;
2636 for (padd
= add_sections
; padd
!= NULL
; padd
= padd
->next
)
2640 pset
= find_section_list (padd
->name
, FALSE
,
2641 SECTION_CONTEXT_SET_FLAGS
);
2643 flags
= pset
->flags
| SEC_HAS_CONTENTS
;
2645 flags
= SEC_HAS_CONTENTS
| SEC_READONLY
| SEC_DATA
;
2647 /* bfd_make_section_with_flags() does not return very helpful
2648 error codes, so check for the most likely user error first. */
2649 if (bfd_get_section_by_name (obfd
, padd
->name
))
2651 bfd_nonfatal_message (NULL
, obfd
, NULL
,
2652 _("can't add section '%s'"), padd
->name
);
2657 /* We use LINKER_CREATED here so that the backend hooks
2658 will create any special section type information,
2659 instead of presuming we know what we're doing merely
2660 because we set the flags. */
2661 padd
->section
= bfd_make_section_with_flags
2662 (obfd
, padd
->name
, flags
| SEC_LINKER_CREATED
);
2663 if (padd
->section
== NULL
)
2665 bfd_nonfatal_message (NULL
, obfd
, NULL
,
2666 _("can't create section `%s'"),
2672 if (! bfd_set_section_size (obfd
, padd
->section
, padd
->size
))
2674 bfd_nonfatal_message (NULL
, obfd
, padd
->section
, NULL
);
2678 pset
= find_section_list (padd
->name
, FALSE
,
2679 SECTION_CONTEXT_SET_VMA
| SECTION_CONTEXT_ALTER_VMA
);
2681 && ! bfd_set_section_vma (obfd
, padd
->section
, pset
->vma_val
))
2683 bfd_nonfatal_message (NULL
, obfd
, padd
->section
, NULL
);
2687 pset
= find_section_list (padd
->name
, FALSE
,
2688 SECTION_CONTEXT_SET_LMA
| SECTION_CONTEXT_ALTER_LMA
);
2691 padd
->section
->lma
= pset
->lma_val
;
2693 if (! bfd_set_section_alignment
2694 (obfd
, padd
->section
,
2695 bfd_section_alignment (obfd
, padd
->section
)))
2697 bfd_nonfatal_message (NULL
, obfd
, padd
->section
, NULL
);
2704 if (update_sections
!= NULL
)
2706 struct section_add
*pupdate
;
2708 for (pupdate
= update_sections
;
2710 pupdate
= pupdate
->next
)
2712 pupdate
->section
= bfd_get_section_by_name (ibfd
, pupdate
->name
);
2713 if (pupdate
->section
== NULL
)
2715 non_fatal (_("error: %s not found, can't be updated"), pupdate
->name
);
2719 osec
= pupdate
->section
->output_section
;
2720 if (! bfd_set_section_size (obfd
, osec
, pupdate
->size
))
2722 bfd_nonfatal_message (NULL
, obfd
, osec
, NULL
);
2730 /* This palaver is necessary because we must set the output
2731 section size first, before its contents are ready. */
2732 osec
= bfd_get_section_by_name (ibfd
, GNU_BUILD_ATTRS_SECTION_NAME
);
2733 if (osec
&& is_merged_note_section (ibfd
, osec
))
2737 size
= bfd_get_section_size (osec
);
2740 bfd_nonfatal_message (NULL
, ibfd
, osec
, _("warning: note section is empty"));
2741 merge_notes
= FALSE
;
2743 else if (! bfd_get_full_section_contents (ibfd
, osec
, & merged_notes
))
2745 bfd_nonfatal_message (NULL
, ibfd
, osec
, _("warning: could not load note section"));
2746 free (merged_notes
);
2747 merged_notes
= NULL
;
2748 merge_notes
= FALSE
;
2752 merged_size
= merge_gnu_build_notes (ibfd
, osec
, size
, merged_notes
);
2753 if (merged_size
== size
)
2755 /* Merging achieves nothing. */
2756 free (merged_notes
);
2757 merged_notes
= NULL
;
2758 merge_notes
= FALSE
;
2763 if (osec
->output_section
== NULL
2764 || ! bfd_set_section_size (obfd
, osec
->output_section
, merged_size
))
2766 bfd_nonfatal_message (NULL
, obfd
, osec
, _("warning: failed to set merged notes size"));
2767 free (merged_notes
);
2768 merged_notes
= NULL
;
2769 merge_notes
= FALSE
;
2777 if (dump_sections
!= NULL
)
2779 struct section_add
* pdump
;
2781 for (pdump
= dump_sections
; pdump
!= NULL
; pdump
= pdump
->next
)
2783 osec
= bfd_get_section_by_name (ibfd
, pdump
->name
);
2786 bfd_nonfatal_message (NULL
, ibfd
, NULL
,
2787 _("can't dump section '%s' - it does not exist"),
2792 if ((bfd_get_section_flags (ibfd
, osec
) & SEC_HAS_CONTENTS
) == 0)
2794 bfd_nonfatal_message (NULL
, ibfd
, osec
,
2795 _("can't dump section - it has no contents"));
2799 bfd_size_type size
= bfd_get_section_size (osec
);
2802 bfd_nonfatal_message (NULL
, ibfd
, osec
,
2803 _("can't dump section - it is empty"));
2808 f
= fopen (pdump
->filename
, FOPEN_WB
);
2811 bfd_nonfatal_message (pdump
->filename
, NULL
, NULL
,
2812 _("could not open section dump file"));
2817 if (bfd_malloc_and_get_section (ibfd
, osec
, &contents
))
2819 if (fwrite (contents
, 1, size
, f
) != size
)
2821 non_fatal (_("error writing section contents to %s (error: %s)"),
2829 bfd_nonfatal_message (NULL
, ibfd
, osec
,
2830 _("could not retrieve section contents"));
2837 if (gnu_debuglink_filename
!= NULL
)
2839 /* PR 15125: Give a helpful warning message if
2840 the debuglink section already exists, and
2841 allow the rest of the copy to complete. */
2842 if (bfd_get_section_by_name (obfd
, ".gnu_debuglink"))
2844 non_fatal (_("%s: debuglink section already exists"),
2845 bfd_get_filename (obfd
));
2846 gnu_debuglink_filename
= NULL
;
2850 gnu_debuglink_section
= bfd_create_gnu_debuglink_section
2851 (obfd
, gnu_debuglink_filename
);
2853 if (gnu_debuglink_section
== NULL
)
2855 bfd_nonfatal_message (NULL
, obfd
, NULL
,
2856 _("cannot create debug link section `%s'"),
2857 gnu_debuglink_filename
);
2861 /* Special processing for PE format files. We
2862 have no way to distinguish PE from COFF here. */
2863 if (bfd_get_flavour (obfd
) == bfd_target_coff_flavour
)
2865 bfd_vma debuglink_vma
;
2866 asection
* highest_section
;
2868 /* The PE spec requires that all sections be adjacent and sorted
2869 in ascending order of VMA. It also specifies that debug
2870 sections should be last. This is despite the fact that debug
2871 sections are not loaded into memory and so in theory have no
2874 This means that the debuglink section must be given a non-zero
2875 VMA which makes it contiguous with other debug sections. So
2876 walk the current section list, find the section with the
2877 highest VMA and start the debuglink section after that one. */
2878 for (osec
= obfd
->sections
, highest_section
= NULL
;
2882 && (highest_section
== NULL
2883 || osec
->vma
> highest_section
->vma
))
2884 highest_section
= osec
;
2886 if (highest_section
)
2887 debuglink_vma
= BFD_ALIGN (highest_section
->vma
2888 + highest_section
->size
,
2889 /* FIXME: We ought to be using
2890 COFF_PAGE_SIZE here or maybe
2891 bfd_get_section_alignment() (if it
2892 was set) but since this is for PE
2893 and we know the required alignment
2894 it is easier just to hard code it. */
2897 /* Umm, not sure what to do in this case. */
2898 debuglink_vma
= 0x1000;
2900 bfd_set_section_vma (obfd
, gnu_debuglink_section
, debuglink_vma
);
2905 c
= bfd_count_sections (obfd
);
2907 && (gap_fill_set
|| pad_to_set
))
2911 /* We must fill in gaps between the sections and/or we must pad
2912 the last section to a specified address. We do this by
2913 grabbing a list of the sections, sorting them by VMA, and
2914 increasing the section sizes as required to fill the gaps.
2915 We write out the gap contents below. */
2917 osections
= (asection
**) xmalloc (c
* sizeof (asection
*));
2919 bfd_map_over_sections (obfd
, get_sections
, &set
);
2921 qsort (osections
, c
, sizeof (asection
*), compare_section_lma
);
2923 gaps
= (bfd_size_type
*) xmalloc (c
* sizeof (bfd_size_type
));
2924 memset (gaps
, 0, c
* sizeof (bfd_size_type
));
2928 for (i
= 0; i
< c
- 1; i
++)
2932 bfd_vma gap_start
, gap_stop
;
2934 flags
= bfd_get_section_flags (obfd
, osections
[i
]);
2935 if ((flags
& SEC_HAS_CONTENTS
) == 0
2936 || (flags
& SEC_LOAD
) == 0)
2939 size
= bfd_section_size (obfd
, osections
[i
]);
2940 gap_start
= bfd_section_lma (obfd
, osections
[i
]) + size
;
2941 gap_stop
= bfd_section_lma (obfd
, osections
[i
+ 1]);
2942 if (gap_start
< gap_stop
)
2944 if (! bfd_set_section_size (obfd
, osections
[i
],
2945 size
+ (gap_stop
- gap_start
)))
2947 bfd_nonfatal_message (NULL
, obfd
, osections
[i
],
2948 _("Can't fill gap after section"));
2952 gaps
[i
] = gap_stop
- gap_start
;
2953 if (max_gap
< gap_stop
- gap_start
)
2954 max_gap
= gap_stop
- gap_start
;
2964 lma
= bfd_section_lma (obfd
, osections
[c
- 1]);
2965 size
= bfd_section_size (obfd
, osections
[c
- 1]);
2966 if (lma
+ size
< pad_to
)
2968 if (! bfd_set_section_size (obfd
, osections
[c
- 1],
2971 bfd_nonfatal_message (NULL
, obfd
, osections
[c
- 1],
2972 _("can't add padding"));
2977 gaps
[c
- 1] = pad_to
- (lma
+ size
);
2978 if (max_gap
< pad_to
- (lma
+ size
))
2979 max_gap
= pad_to
- (lma
+ size
);
2985 /* Symbol filtering must happen after the output sections
2986 have been created, but before their contents are set. */
2988 if (convert_debugging
)
2989 dhandle
= read_debugging_info (ibfd
, isympp
, symcount
, FALSE
);
2991 if (strip_symbols
== STRIP_DEBUG
2992 || strip_symbols
== STRIP_ALL
2993 || strip_symbols
== STRIP_UNNEEDED
2994 || strip_symbols
== STRIP_NONDEBUG
2995 || strip_symbols
== STRIP_DWO
2996 || strip_symbols
== STRIP_NONDWO
2997 || discard_locals
!= LOCALS_UNDEF
2999 || htab_elements (strip_specific_htab
) != 0
3000 || htab_elements (keep_specific_htab
) != 0
3001 || htab_elements (localize_specific_htab
) != 0
3002 || htab_elements (globalize_specific_htab
) != 0
3003 || htab_elements (keepglobal_specific_htab
) != 0
3004 || htab_elements (weaken_specific_htab
) != 0
3005 || htab_elements (redefine_specific_htab
) != 0
3006 || prefix_symbols_string
3009 || convert_debugging
3010 || change_leading_char
3011 || remove_leading_char
3012 || section_rename_list
3016 /* Mark symbols used in output relocations so that they
3017 are kept, even if they are local labels or static symbols.
3019 Note we iterate over the input sections examining their
3020 relocations since the relocations for the output sections
3021 haven't been set yet. mark_symbols_used_in_relocations will
3022 ignore input sections which have no corresponding output
3024 if (strip_symbols
!= STRIP_ALL
)
3026 bfd_set_error (bfd_error_no_error
);
3027 bfd_map_over_sections (ibfd
,
3028 mark_symbols_used_in_relocations
,
3030 if (bfd_get_error () != bfd_error_no_error
)
3037 osympp
= (asymbol
**) xmalloc ((symcount
+ add_symbols
+ 1) * sizeof (asymbol
*));
3038 symcount
= filter_symbols (ibfd
, obfd
, osympp
, isympp
, symcount
);
3041 if (convert_debugging
&& dhandle
!= NULL
)
3043 if (! write_debugging_info (obfd
, dhandle
, &symcount
, &osympp
))
3050 bfd_set_symtab (obfd
, osympp
, symcount
);
3052 /* This has to happen before section positions are set. */
3053 bfd_map_over_sections (ibfd
, copy_relocations_in_section
, obfd
);
3055 /* This has to happen after the symbol table has been set. */
3056 bfd_map_over_sections (ibfd
, copy_section
, obfd
);
3058 if (add_sections
!= NULL
)
3060 struct section_add
*padd
;
3062 for (padd
= add_sections
; padd
!= NULL
; padd
= padd
->next
)
3064 if (! bfd_set_section_contents (obfd
, padd
->section
, padd
->contents
,
3067 bfd_nonfatal_message (NULL
, obfd
, padd
->section
, NULL
);
3073 if (update_sections
!= NULL
)
3075 struct section_add
*pupdate
;
3077 for (pupdate
= update_sections
;
3079 pupdate
= pupdate
->next
)
3081 osec
= pupdate
->section
->output_section
;
3082 if (! bfd_set_section_contents (obfd
, osec
, pupdate
->contents
,
3085 bfd_nonfatal_message (NULL
, obfd
, osec
, NULL
);
3093 osec
= bfd_get_section_by_name (obfd
, GNU_BUILD_ATTRS_SECTION_NAME
);
3094 if (osec
&& is_merged_note_section (obfd
, osec
))
3096 if (! bfd_set_section_contents (obfd
, osec
, merged_notes
, 0, merged_size
))
3098 bfd_nonfatal_message (NULL
, obfd
, osec
, _("error: failed to copy merged notes into output"));
3102 else if (! is_strip
)
3103 bfd_nonfatal_message (NULL
, obfd
, osec
, _("could not find any mergeable note sections"));
3104 free (merged_notes
);
3105 merged_notes
= NULL
;
3106 merge_notes
= FALSE
;
3109 if (gnu_debuglink_filename
!= NULL
)
3111 if (! bfd_fill_in_gnu_debuglink_section
3112 (obfd
, gnu_debuglink_section
, gnu_debuglink_filename
))
3114 bfd_nonfatal_message (NULL
, obfd
, NULL
,
3115 _("cannot fill debug link section `%s'"),
3116 gnu_debuglink_filename
);
3121 if (gap_fill_set
|| pad_to_set
)
3125 /* Fill in the gaps. */
3128 buf
= (bfd_byte
*) xmalloc (max_gap
);
3129 memset (buf
, gap_fill
, max_gap
);
3131 c
= bfd_count_sections (obfd
);
3132 for (i
= 0; i
< c
; i
++)
3140 off
= bfd_section_size (obfd
, osections
[i
]) - left
;
3151 if (! bfd_set_section_contents (obfd
, osections
[i
], buf
,
3154 bfd_nonfatal_message (NULL
, obfd
, osections
[i
], NULL
);
3165 /* Allow the BFD backend to copy any private data it understands
3166 from the input BFD to the output BFD. This is done last to
3167 permit the routine to look at the filtered symbol table, which is
3168 important for the ECOFF code at least. */
3169 if (! bfd_copy_private_bfd_data (ibfd
, obfd
))
3171 bfd_nonfatal_message (NULL
, obfd
, NULL
,
3172 _("error copying private BFD data"));
3176 /* Switch to the alternate machine code. We have to do this at the
3177 very end, because we only initialize the header when we create
3178 the first section. */
3179 if (use_alt_mach_code
!= 0)
3181 if (! bfd_alt_mach_code (obfd
, use_alt_mach_code
))
3183 non_fatal (_("this target does not support %lu alternative machine codes"),
3185 if (bfd_get_flavour (obfd
) == bfd_target_elf_flavour
)
3187 non_fatal (_("treating that number as an absolute e_machine value instead"));
3188 elf_elfheader (obfd
)->e_machine
= use_alt_mach_code
;
3191 non_fatal (_("ignoring the alternative value"));
3198 /* Read each archive element in turn from IBFD, copy the
3199 contents to temp file, and keep the temp file handle.
3200 If 'force_output_target' is TRUE then make sure that
3201 all elements in the new archive are of the type
3205 copy_archive (bfd
*ibfd
, bfd
*obfd
, const char *output_target
,
3206 bfd_boolean force_output_target
,
3207 const bfd_arch_info_type
*input_arch
)
3211 struct name_list
*next
;
3215 bfd
**ptr
= &obfd
->archive_head
;
3218 const char *filename
;
3220 /* Make a temp directory to hold the contents. */
3221 dir
= make_tempdir (bfd_get_filename (obfd
));
3223 fatal (_("cannot create tempdir for archive copying (error: %s)"),
3226 if (strip_symbols
== STRIP_ALL
)
3227 obfd
->has_armap
= FALSE
;
3229 obfd
->has_armap
= ibfd
->has_armap
;
3230 obfd
->is_thin_archive
= ibfd
->is_thin_archive
;
3233 obfd
->flags
|= BFD_DETERMINISTIC_OUTPUT
;
3237 this_element
= bfd_openr_next_archived_file (ibfd
, NULL
);
3239 if (!bfd_set_format (obfd
, bfd_get_format (ibfd
)))
3242 bfd_nonfatal_message (NULL
, obfd
, NULL
, NULL
);
3243 goto cleanup_and_exit
;
3246 while (!status
&& this_element
!= NULL
)
3252 int stat_status
= 0;
3253 bfd_boolean del
= TRUE
;
3254 bfd_boolean ok_object
;
3256 /* PR binutils/17533: Do not allow directory traversal
3257 outside of the current directory tree by archive members. */
3258 if (! is_valid_archive_path (bfd_get_filename (this_element
)))
3260 non_fatal (_("illegal pathname found in archive member: %s"),
3261 bfd_get_filename (this_element
));
3263 goto cleanup_and_exit
;
3266 /* Create an output file for this member. */
3267 output_name
= concat (dir
, "/",
3268 bfd_get_filename (this_element
), (char *) 0);
3270 /* If the file already exists, make another temp dir. */
3271 if (stat (output_name
, &buf
) >= 0)
3273 output_name
= make_tempdir (output_name
);
3274 if (output_name
== NULL
)
3276 non_fatal (_("cannot create tempdir for archive copying (error: %s)"),
3279 goto cleanup_and_exit
;
3282 l
= (struct name_list
*) xmalloc (sizeof (struct name_list
));
3283 l
->name
= output_name
;
3287 output_name
= concat (output_name
, "/",
3288 bfd_get_filename (this_element
), (char *) 0);
3293 stat_status
= bfd_stat_arch_elt (this_element
, &buf
);
3295 if (stat_status
!= 0)
3296 non_fatal (_("internal stat error on %s"),
3297 bfd_get_filename (this_element
));
3300 l
= (struct name_list
*) xmalloc (sizeof (struct name_list
));
3301 l
->name
= output_name
;
3306 ok_object
= bfd_check_format (this_element
, bfd_object
);
3308 bfd_nonfatal_message (NULL
, this_element
, NULL
,
3309 _("Unable to recognise the format of file"));
3311 /* PR binutils/3110: Cope with archives
3312 containing multiple target types. */
3313 if (force_output_target
|| !ok_object
)
3314 output_bfd
= bfd_openw (output_name
, output_target
);
3316 output_bfd
= bfd_openw (output_name
, bfd_get_target (this_element
));
3318 if (output_bfd
== NULL
)
3320 bfd_nonfatal_message (output_name
, NULL
, NULL
, NULL
);
3322 goto cleanup_and_exit
;
3327 del
= !copy_object (this_element
, output_bfd
, input_arch
);
3329 if (del
&& bfd_get_arch (this_element
) == bfd_arch_unknown
)
3330 /* Try again as an unknown object file. */
3332 else if (!bfd_close (output_bfd
))
3334 bfd_nonfatal_message (output_name
, NULL
, NULL
, NULL
);
3335 /* Error in new object file. Don't change archive. */
3342 del
= !copy_unknown_object (this_element
, output_bfd
);
3343 if (!bfd_close_all_done (output_bfd
))
3345 bfd_nonfatal_message (output_name
, NULL
, NULL
, NULL
);
3346 /* Error in new object file. Don't change archive. */
3353 unlink (output_name
);
3358 if (preserve_dates
&& stat_status
== 0)
3359 set_times (output_name
, &buf
);
3361 /* Open the newly output file and attach to our list. */
3362 output_bfd
= bfd_openr (output_name
, output_target
);
3364 l
->obfd
= output_bfd
;
3367 ptr
= &output_bfd
->archive_next
;
3369 last_element
= this_element
;
3371 this_element
= bfd_openr_next_archived_file (ibfd
, last_element
);
3373 bfd_close (last_element
);
3378 filename
= bfd_get_filename (obfd
);
3379 if (!bfd_close (obfd
))
3382 bfd_nonfatal_message (filename
, NULL
, NULL
, NULL
);
3385 filename
= bfd_get_filename (ibfd
);
3386 if (!bfd_close (ibfd
))
3389 bfd_nonfatal_message (filename
, NULL
, NULL
, NULL
);
3393 /* Delete all the files that we opened. */
3394 for (l
= list
; l
!= NULL
; l
= l
->next
)
3396 if (l
->obfd
== NULL
)
3400 bfd_close (l
->obfd
);
3409 set_long_section_mode (bfd
*output_bfd
, bfd
*input_bfd
, enum long_section_name_handling style
)
3411 /* This is only relevant to Coff targets. */
3412 if (bfd_get_flavour (output_bfd
) == bfd_target_coff_flavour
)
3415 && bfd_get_flavour (input_bfd
) == bfd_target_coff_flavour
)
3416 style
= bfd_coff_long_section_names (input_bfd
) ? ENABLE
: DISABLE
;
3417 bfd_coff_set_long_section_names (output_bfd
, style
!= DISABLE
);
3421 /* The top-level control. */
3424 copy_file (const char *input_filename
, const char *output_filename
,
3425 const char *input_target
, const char *output_target
,
3426 const bfd_arch_info_type
*input_arch
)
3429 char **obj_matching
;
3430 char **core_matching
;
3431 off_t size
= get_file_size (input_filename
);
3436 non_fatal (_("error: the input file '%s' is empty"),
3442 /* To allow us to do "strip *" without dying on the first
3443 non-object file, failures are nonfatal. */
3444 ibfd
= bfd_openr (input_filename
, input_target
);
3447 bfd_nonfatal_message (input_filename
, NULL
, NULL
, NULL
);
3452 switch (do_debug_sections
)
3456 case compress_gnu_zlib
:
3457 case compress_gabi_zlib
:
3458 ibfd
->flags
|= BFD_COMPRESS
;
3459 /* Don't check if input is ELF here since this information is
3460 only available after bfd_check_format_matches is called. */
3461 if (do_debug_sections
!= compress_gnu_zlib
)
3462 ibfd
->flags
|= BFD_COMPRESS_GABI
;
3465 ibfd
->flags
|= BFD_DECOMPRESS
;
3471 switch (do_elf_stt_common
)
3473 case elf_stt_common
:
3474 ibfd
->flags
|= BFD_CONVERT_ELF_COMMON
| BFD_USE_ELF_STT_COMMON
;
3477 case no_elf_stt_common
:
3478 ibfd
->flags
|= BFD_CONVERT_ELF_COMMON
;
3484 if (bfd_check_format (ibfd
, bfd_archive
))
3486 bfd_boolean force_output_target
;
3489 /* bfd_get_target does not return the correct value until
3490 bfd_check_format succeeds. */
3491 if (output_target
== NULL
)
3493 output_target
= bfd_get_target (ibfd
);
3494 force_output_target
= FALSE
;
3497 force_output_target
= TRUE
;
3499 obfd
= bfd_openw (output_filename
, output_target
);
3502 bfd_nonfatal_message (output_filename
, NULL
, NULL
, NULL
);
3506 /* This is a no-op on non-Coff targets. */
3507 set_long_section_mode (obfd
, ibfd
, long_section_names
);
3509 copy_archive (ibfd
, obfd
, output_target
, force_output_target
, input_arch
);
3511 else if (bfd_check_format_matches (ibfd
, bfd_object
, &obj_matching
))
3516 /* bfd_get_target does not return the correct value until
3517 bfd_check_format succeeds. */
3518 if (output_target
== NULL
)
3519 output_target
= bfd_get_target (ibfd
);
3521 obfd
= bfd_openw (output_filename
, output_target
);
3524 bfd_nonfatal_message (output_filename
, NULL
, NULL
, NULL
);
3528 /* This is a no-op on non-Coff targets. */
3529 set_long_section_mode (obfd
, ibfd
, long_section_names
);
3531 if (! copy_object (ibfd
, obfd
, input_arch
))
3534 /* PR 17512: file: 0f15796a.
3535 If the file could not be copied it may not be in a writeable
3536 state. So use bfd_close_all_done to avoid the possibility of
3537 writing uninitialised data into the file. */
3538 if (! (status
? bfd_close_all_done (obfd
) : bfd_close (obfd
)))
3541 bfd_nonfatal_message (output_filename
, NULL
, NULL
, NULL
);
3545 if (!bfd_close (ibfd
))
3548 bfd_nonfatal_message (input_filename
, NULL
, NULL
, NULL
);
3554 bfd_error_type obj_error
= bfd_get_error ();
3555 bfd_error_type core_error
;
3557 if (bfd_check_format_matches (ibfd
, bfd_core
, &core_matching
))
3559 /* This probably can't happen.. */
3560 if (obj_error
== bfd_error_file_ambiguously_recognized
)
3561 free (obj_matching
);
3565 core_error
= bfd_get_error ();
3566 /* Report the object error in preference to the core error. */
3567 if (obj_error
!= core_error
)
3568 bfd_set_error (obj_error
);
3570 bfd_nonfatal_message (input_filename
, NULL
, NULL
, NULL
);
3572 if (obj_error
== bfd_error_file_ambiguously_recognized
)
3574 list_matching_formats (obj_matching
);
3575 free (obj_matching
);
3577 if (core_error
== bfd_error_file_ambiguously_recognized
)
3579 list_matching_formats (core_matching
);
3580 free (core_matching
);
3587 /* Add a name to the section renaming list. */
3590 add_section_rename (const char * old_name
, const char * new_name
,
3593 section_rename
* srename
;
3595 /* Check for conflicts first. */
3596 for (srename
= section_rename_list
; srename
!= NULL
; srename
= srename
->next
)
3597 if (strcmp (srename
->old_name
, old_name
) == 0)
3599 /* Silently ignore duplicate definitions. */
3600 if (strcmp (srename
->new_name
, new_name
) == 0
3601 && srename
->flags
== flags
)
3604 fatal (_("Multiple renames of section %s"), old_name
);
3607 srename
= (section_rename
*) xmalloc (sizeof (* srename
));
3609 srename
->old_name
= old_name
;
3610 srename
->new_name
= new_name
;
3611 srename
->flags
= flags
;
3612 srename
->next
= section_rename_list
;
3614 section_rename_list
= srename
;
3617 /* Check the section rename list for a new name of the input section
3618 called OLD_NAME. Returns the new name if one is found and sets
3619 RETURNED_FLAGS if non-NULL to the flags to be used for this section. */
3622 find_section_rename (const char *old_name
, flagword
*returned_flags
)
3624 const section_rename
*srename
;
3626 for (srename
= section_rename_list
; srename
!= NULL
; srename
= srename
->next
)
3627 if (strcmp (srename
->old_name
, old_name
) == 0)
3629 if (returned_flags
!= NULL
&& srename
->flags
!= (flagword
) -1)
3630 *returned_flags
= srename
->flags
;
3632 return srename
->new_name
;
3638 /* Once each of the sections is copied, we may still need to do some
3639 finalization work for private section headers. Do that here. */
3642 setup_bfd_headers (bfd
*ibfd
, bfd
*obfd
)
3644 /* Allow the BFD backend to copy any private data it understands
3645 from the input section to the output section. */
3646 if (! bfd_copy_private_header_data (ibfd
, obfd
))
3649 bfd_nonfatal_message (NULL
, ibfd
, NULL
,
3650 _("error in private header data"));
3654 /* All went well. */
3658 /* Create a section in OBFD with the same
3659 name and attributes as ISECTION in IBFD. */
3662 setup_section (bfd
*ibfd
, sec_ptr isection
, void *obfdarg
)
3664 bfd
*obfd
= (bfd
*) obfdarg
;
3665 struct section_list
*p
;
3673 char *prefix
= NULL
;
3674 bfd_boolean make_nobits
;
3676 if (is_strip_section (ibfd
, isection
))
3679 /* Get the, possibly new, name of the output section. */
3680 name
= bfd_section_name (ibfd
, isection
);
3681 flags
= bfd_get_section_flags (ibfd
, isection
);
3682 name
= find_section_rename (name
, &flags
);
3684 /* Prefix sections. */
3685 if ((prefix_alloc_sections_string
)
3686 && (bfd_get_section_flags (ibfd
, isection
) & SEC_ALLOC
))
3687 prefix
= prefix_alloc_sections_string
;
3688 else if (prefix_sections_string
)
3689 prefix
= prefix_sections_string
;
3695 n
= (char *) xmalloc (strlen (prefix
) + strlen (name
) + 1);
3701 make_nobits
= FALSE
;
3703 p
= find_section_list (bfd_section_name (ibfd
, isection
), FALSE
,
3704 SECTION_CONTEXT_SET_FLAGS
);
3706 flags
= p
->flags
| (flags
& (SEC_HAS_CONTENTS
| SEC_RELOC
));
3707 else if (strip_symbols
== STRIP_NONDEBUG
3708 && (flags
& (SEC_ALLOC
| SEC_GROUP
)) != 0
3709 && !is_nondebug_keep_contents_section (ibfd
, isection
))
3711 flags
&= ~(SEC_HAS_CONTENTS
| SEC_LOAD
| SEC_GROUP
);
3712 if (obfd
->xvec
->flavour
== bfd_target_elf_flavour
)
3716 /* Twiddle the input section flags so that it seems to
3717 elf.c:copy_private_bfd_data that section flags have not
3718 changed between input and output sections. This hack
3719 prevents wholesale rewriting of the program headers. */
3720 isection
->flags
&= ~(SEC_HAS_CONTENTS
| SEC_LOAD
| SEC_GROUP
);
3724 osection
= bfd_make_section_anyway_with_flags (obfd
, name
, flags
);
3726 if (osection
== NULL
)
3728 err
= _("failed to create output section");
3733 elf_section_type (osection
) = SHT_NOBITS
;
3735 size
= bfd_section_size (ibfd
, isection
);
3736 size
= bfd_convert_section_size (ibfd
, isection
, obfd
, size
);
3738 size
= (size
+ interleave
- 1) / interleave
* copy_width
;
3739 else if (extract_symbol
)
3741 if (! bfd_set_section_size (obfd
, osection
, size
))
3743 err
= _("failed to set size");
3747 vma
= bfd_section_vma (ibfd
, isection
);
3748 p
= find_section_list (bfd_section_name (ibfd
, isection
), FALSE
,
3749 SECTION_CONTEXT_ALTER_VMA
| SECTION_CONTEXT_SET_VMA
);
3752 if (p
->context
& SECTION_CONTEXT_SET_VMA
)
3758 vma
+= change_section_address
;
3760 if (! bfd_set_section_vma (obfd
, osection
, vma
))
3762 err
= _("failed to set vma");
3766 lma
= isection
->lma
;
3767 p
= find_section_list (bfd_section_name (ibfd
, isection
), FALSE
,
3768 SECTION_CONTEXT_ALTER_LMA
| SECTION_CONTEXT_SET_LMA
);
3771 if (p
->context
& SECTION_CONTEXT_ALTER_LMA
)
3777 lma
+= change_section_address
;
3779 osection
->lma
= lma
;
3781 /* FIXME: This is probably not enough. If we change the LMA we
3782 may have to recompute the header for the file as well. */
3783 if (!bfd_set_section_alignment (obfd
,
3785 bfd_section_alignment (ibfd
, isection
)))
3787 err
= _("failed to set alignment");
3791 /* Copy merge entity size. */
3792 osection
->entsize
= isection
->entsize
;
3794 /* Copy compress status. */
3795 osection
->compress_status
= isection
->compress_status
;
3797 /* This used to be mangle_section; we do here to avoid using
3798 bfd_get_section_by_name since some formats allow multiple
3799 sections with the same name. */
3800 isection
->output_section
= osection
;
3801 isection
->output_offset
= 0;
3803 if ((isection
->flags
& SEC_GROUP
) != 0)
3805 asymbol
*gsym
= group_signature (isection
);
3809 gsym
->flags
|= BSF_KEEP
;
3810 if (ibfd
->xvec
->flavour
== bfd_target_elf_flavour
)
3811 elf_group_id (isection
) = gsym
;
3815 /* Allow the BFD backend to copy any private data it understands
3816 from the input section to the output section. */
3817 if (!bfd_copy_private_section_data (ibfd
, isection
, obfd
, osection
))
3819 err
= _("failed to copy private data");
3823 /* All went well. */
3828 bfd_nonfatal_message (NULL
, obfd
, osection
, err
);
3831 /* Return TRUE if input section ISECTION should be skipped. */
3834 skip_section (bfd
*ibfd
, sec_ptr isection
, bfd_boolean skip_copy
)
3840 /* If we have already failed earlier on,
3841 do not keep on generating complaints now. */
3848 if (is_strip_section (ibfd
, isection
))
3851 if (is_update_section (ibfd
, isection
))
3854 /* When merging a note section we skip the copying of the contents,
3855 but not the copying of the relocs associated with the contents. */
3856 if (skip_copy
&& is_merged_note_section (ibfd
, isection
))
3859 flags
= bfd_get_section_flags (ibfd
, isection
);
3860 if ((flags
& SEC_GROUP
) != 0)
3863 osection
= isection
->output_section
;
3864 size
= bfd_get_section_size (isection
);
3866 if (size
== 0 || osection
== 0)
3872 /* Add section SECTION_PATTERN to the list of sections that will have their
3873 relocations removed. */
3876 handle_remove_relocations_option (const char *section_pattern
)
3878 find_section_list (section_pattern
, TRUE
, SECTION_CONTEXT_REMOVE_RELOCS
);
3881 /* Return TRUE if ISECTION from IBFD should have its relocations removed,
3882 otherwise return FALSE. If the user has requested that relocations be
3883 removed from a section that does not have relocations then this
3884 function will still return TRUE. */
3887 discard_relocations (bfd
*ibfd ATTRIBUTE_UNUSED
, asection
*isection
)
3889 return (find_section_list (bfd_section_name (ibfd
, isection
), FALSE
,
3890 SECTION_CONTEXT_REMOVE_RELOCS
) != NULL
);
3893 /* Wrapper for dealing with --remove-section (-R) command line arguments.
3894 A special case is detected here, if the user asks to remove a relocation
3895 section (one starting with ".rela." or ".rel.") then this removal must
3896 be done using a different technique. */
3899 handle_remove_section_option (const char *section_pattern
)
3901 if (strncmp (section_pattern
, ".rela.", 6) == 0)
3902 handle_remove_relocations_option (section_pattern
+ 5);
3903 else if (strncmp (section_pattern
, ".rel.", 5) == 0)
3904 handle_remove_relocations_option (section_pattern
+ 4);
3907 find_section_list (section_pattern
, TRUE
, SECTION_CONTEXT_REMOVE
);
3908 sections_removed
= TRUE
;
3912 /* Copy relocations in input section ISECTION of IBFD to an output
3913 section with the same name in OBFDARG. If stripping then don't
3914 copy any relocation info. */
3917 copy_relocations_in_section (bfd
*ibfd
, sec_ptr isection
, void *obfdarg
)
3919 bfd
*obfd
= (bfd
*) obfdarg
;
3925 if (skip_section (ibfd
, isection
, FALSE
))
3928 osection
= isection
->output_section
;
3930 /* Core files and DWO files do not need to be relocated. */
3931 if (bfd_get_format (obfd
) == bfd_core
3932 || strip_symbols
== STRIP_NONDWO
3933 || discard_relocations (ibfd
, isection
))
3937 relsize
= bfd_get_reloc_upper_bound (ibfd
, isection
);
3941 /* Do not complain if the target does not support relocations. */
3942 if (relsize
== -1 && bfd_get_error () == bfd_error_invalid_operation
)
3947 bfd_nonfatal_message (NULL
, ibfd
, isection
, NULL
);
3955 bfd_set_reloc (obfd
, osection
, NULL
, 0);
3956 osection
->flags
&= ~SEC_RELOC
;
3960 if (isection
->orelocation
!= NULL
)
3962 /* Some other function has already set up the output relocs
3963 for us, so scan those instead of the default relocs. */
3964 relcount
= isection
->reloc_count
;
3965 relpp
= isection
->orelocation
;
3969 relpp
= (arelent
**) xmalloc (relsize
);
3970 relcount
= bfd_canonicalize_reloc (ibfd
, isection
, relpp
, isympp
);
3974 bfd_nonfatal_message (NULL
, ibfd
, isection
,
3975 _("relocation count is negative"));
3980 if (strip_symbols
== STRIP_ALL
)
3982 /* Remove relocations which are not in
3983 keep_strip_specific_list. */
3984 arelent
**temp_relpp
;
3985 long temp_relcount
= 0;
3988 temp_relpp
= (arelent
**) xmalloc (relsize
);
3989 for (i
= 0; i
< relcount
; i
++)
3991 /* PR 17512: file: 9e907e0c. */
3992 if (relpp
[i
]->sym_ptr_ptr
3994 && * relpp
[i
]->sym_ptr_ptr
)
3995 if (is_specified_symbol (bfd_asymbol_name (*relpp
[i
]->sym_ptr_ptr
),
3996 keep_specific_htab
))
3997 temp_relpp
[temp_relcount
++] = relpp
[i
];
3999 relcount
= temp_relcount
;
4000 if (isection
->orelocation
== NULL
)
4005 bfd_set_reloc (obfd
, osection
, relcount
== 0 ? NULL
: relpp
, relcount
);
4008 osection
->flags
&= ~SEC_RELOC
;
4014 /* Copy the data of input section ISECTION of IBFD
4015 to an output section with the same name in OBFD. */
4018 copy_section (bfd
*ibfd
, sec_ptr isection
, void *obfdarg
)
4020 bfd
*obfd
= (bfd
*) obfdarg
;
4021 struct section_list
*p
;
4025 if (skip_section (ibfd
, isection
, TRUE
))
4028 osection
= isection
->output_section
;
4029 /* The output SHF_COMPRESSED section size is different from input if
4030 ELF classes of input and output aren't the same. We can't use
4031 the output section size since --interleave will shrink the output
4032 section. Size will be updated if the section is converted. */
4033 size
= bfd_get_section_size (isection
);
4035 if (bfd_get_section_flags (ibfd
, isection
) & SEC_HAS_CONTENTS
4036 && bfd_get_section_flags (obfd
, osection
) & SEC_HAS_CONTENTS
)
4038 bfd_byte
*memhunk
= NULL
;
4040 if (!bfd_get_full_section_contents (ibfd
, isection
, &memhunk
)
4041 || !bfd_convert_section_contents (ibfd
, isection
, obfd
,
4045 bfd_nonfatal_message (NULL
, ibfd
, isection
, NULL
);
4052 /* We don't handle leftover bytes (too many possible behaviors,
4053 and we don't know what the user wants). The section length
4054 must be a multiple of the number of bytes to swap. */
4055 if ((size
% reverse_bytes
) == 0)
4060 for (i
= 0; i
< size
; i
+= reverse_bytes
)
4061 for (j
= 0; j
< (unsigned long)(reverse_bytes
/ 2); j
++)
4063 bfd_byte
*m
= (bfd_byte
*) memhunk
;
4066 m
[i
+ j
] = m
[(i
+ reverse_bytes
) - (j
+ 1)];
4067 m
[(i
+ reverse_bytes
) - (j
+ 1)] = b
;
4071 /* User must pad the section up in order to do this. */
4072 fatal (_("cannot reverse bytes: length of section %s must be evenly divisible by %d"),
4073 bfd_section_name (ibfd
, isection
), reverse_bytes
);
4078 /* Keep only every `copy_byte'th byte in MEMHUNK. */
4079 char *from
= (char *) memhunk
+ copy_byte
;
4080 char *to
= (char *) memhunk
;
4081 char *end
= (char *) memhunk
+ size
;
4084 /* If the section address is not exactly divisible by the interleave,
4085 then we must bias the from address. If the copy_byte is less than
4086 the bias, then we must skip forward one interleave, and increment
4088 int extra
= isection
->lma
% interleave
;
4090 if (copy_byte
< extra
)
4093 for (; from
< end
; from
+= interleave
)
4094 for (i
= 0; i
< copy_width
; i
++)
4096 if (&from
[i
] >= end
)
4101 size
= (size
+ interleave
- 1 - copy_byte
) / interleave
* copy_width
;
4102 osection
->lma
/= interleave
;
4103 if (copy_byte
< extra
)
4107 if (!bfd_set_section_contents (obfd
, osection
, memhunk
, 0, size
))
4110 bfd_nonfatal_message (NULL
, obfd
, osection
, NULL
);
4116 else if ((p
= find_section_list (bfd_get_section_name (ibfd
, isection
),
4117 FALSE
, SECTION_CONTEXT_SET_FLAGS
)) != NULL
4118 && (p
->flags
& SEC_HAS_CONTENTS
) != 0)
4120 void *memhunk
= xmalloc (size
);
4122 /* We don't permit the user to turn off the SEC_HAS_CONTENTS
4123 flag--they can just remove the section entirely and add it
4124 back again. However, we do permit them to turn on the
4125 SEC_HAS_CONTENTS flag, and take it to mean that the section
4126 contents should be zeroed out. */
4128 memset (memhunk
, 0, size
);
4129 if (! bfd_set_section_contents (obfd
, osection
, memhunk
, 0, size
))
4132 bfd_nonfatal_message (NULL
, obfd
, osection
, NULL
);
4140 /* Get all the sections. This is used when --gap-fill or --pad-to is
4144 get_sections (bfd
*obfd ATTRIBUTE_UNUSED
, asection
*osection
, void *secppparg
)
4146 asection
***secppp
= (asection
***) secppparg
;
4148 **secppp
= osection
;
4152 /* Sort sections by VMA. This is called via qsort, and is used when
4153 --gap-fill or --pad-to is used. We force non loadable or empty
4154 sections to the front, where they are easier to ignore. */
4157 compare_section_lma (const void *arg1
, const void *arg2
)
4159 const asection
*const *sec1
= (const asection
* const *) arg1
;
4160 const asection
*const *sec2
= (const asection
* const *) arg2
;
4161 flagword flags1
, flags2
;
4163 /* Sort non loadable sections to the front. */
4164 flags1
= (*sec1
)->flags
;
4165 flags2
= (*sec2
)->flags
;
4166 if ((flags1
& SEC_HAS_CONTENTS
) == 0
4167 || (flags1
& SEC_LOAD
) == 0)
4169 if ((flags2
& SEC_HAS_CONTENTS
) != 0
4170 && (flags2
& SEC_LOAD
) != 0)
4175 if ((flags2
& SEC_HAS_CONTENTS
) == 0
4176 || (flags2
& SEC_LOAD
) == 0)
4180 /* Sort sections by LMA. */
4181 if ((*sec1
)->lma
> (*sec2
)->lma
)
4183 else if ((*sec1
)->lma
< (*sec2
)->lma
)
4186 /* Sort sections with the same LMA by size. */
4187 if (bfd_get_section_size (*sec1
) > bfd_get_section_size (*sec2
))
4189 else if (bfd_get_section_size (*sec1
) < bfd_get_section_size (*sec2
))
4195 /* Mark all the symbols which will be used in output relocations with
4196 the BSF_KEEP flag so that those symbols will not be stripped.
4198 Ignore relocations which will not appear in the output file. */
4201 mark_symbols_used_in_relocations (bfd
*ibfd
, sec_ptr isection
, void *symbolsarg
)
4203 asymbol
**symbols
= (asymbol
**) symbolsarg
;
4208 /* Ignore an input section with no corresponding output section. */
4209 if (isection
->output_section
== NULL
)
4212 relsize
= bfd_get_reloc_upper_bound (ibfd
, isection
);
4215 /* Do not complain if the target does not support relocations. */
4216 if (relsize
== -1 && bfd_get_error () == bfd_error_invalid_operation
)
4218 bfd_fatal (bfd_get_filename (ibfd
));
4224 relpp
= (arelent
**) xmalloc (relsize
);
4225 relcount
= bfd_canonicalize_reloc (ibfd
, isection
, relpp
, symbols
);
4227 bfd_fatal (bfd_get_filename (ibfd
));
4229 /* Examine each symbol used in a relocation. If it's not one of the
4230 special bfd section symbols, then mark it with BSF_KEEP. */
4231 for (i
= 0; i
< relcount
; i
++)
4233 /* See PRs 20923 and 20930 for reproducers for the NULL tests. */
4234 if (relpp
[i
]->sym_ptr_ptr
!= NULL
4235 && * relpp
[i
]->sym_ptr_ptr
!= NULL
4236 && *relpp
[i
]->sym_ptr_ptr
!= bfd_com_section_ptr
->symbol
4237 && *relpp
[i
]->sym_ptr_ptr
!= bfd_abs_section_ptr
->symbol
4238 && *relpp
[i
]->sym_ptr_ptr
!= bfd_und_section_ptr
->symbol
)
4239 (*relpp
[i
]->sym_ptr_ptr
)->flags
|= BSF_KEEP
;
4246 /* Write out debugging information. */
4249 write_debugging_info (bfd
*obfd
, void *dhandle
,
4250 long *symcountp ATTRIBUTE_UNUSED
,
4251 asymbol
***symppp ATTRIBUTE_UNUSED
)
4253 if (bfd_get_flavour (obfd
) == bfd_target_coff_flavour
4254 || bfd_get_flavour (obfd
) == bfd_target_elf_flavour
)
4256 bfd_byte
*syms
, *strings
;
4257 bfd_size_type symsize
, stringsize
;
4258 asection
*stabsec
, *stabstrsec
;
4261 if (! write_stabs_in_sections_debugging_info (obfd
, dhandle
, &syms
,
4266 flags
= SEC_HAS_CONTENTS
| SEC_READONLY
| SEC_DEBUGGING
;
4267 stabsec
= bfd_make_section_with_flags (obfd
, ".stab", flags
);
4268 stabstrsec
= bfd_make_section_with_flags (obfd
, ".stabstr", flags
);
4270 || stabstrsec
== NULL
4271 || ! bfd_set_section_size (obfd
, stabsec
, symsize
)
4272 || ! bfd_set_section_size (obfd
, stabstrsec
, stringsize
)
4273 || ! bfd_set_section_alignment (obfd
, stabsec
, 2)
4274 || ! bfd_set_section_alignment (obfd
, stabstrsec
, 0))
4276 bfd_nonfatal_message (NULL
, obfd
, NULL
,
4277 _("can't create debugging section"));
4281 /* We can get away with setting the section contents now because
4282 the next thing the caller is going to do is copy over the
4283 real sections. We may someday have to split the contents
4284 setting out of this function. */
4285 if (! bfd_set_section_contents (obfd
, stabsec
, syms
, 0, symsize
)
4286 || ! bfd_set_section_contents (obfd
, stabstrsec
, strings
, 0,
4289 bfd_nonfatal_message (NULL
, obfd
, NULL
,
4290 _("can't set debugging section contents"));
4297 bfd_nonfatal_message (NULL
, obfd
, NULL
,
4298 _("don't know how to write debugging information for %s"),
4299 bfd_get_target (obfd
));
4303 /* If neither -D nor -U was specified explicitly,
4304 then use the configured default. */
4306 default_deterministic (void)
4308 if (deterministic
< 0)
4309 deterministic
= DEFAULT_AR_DETERMINISTIC
;
4313 strip_main (int argc
, char *argv
[])
4315 char *input_target
= NULL
;
4316 char *output_target
= NULL
;
4317 bfd_boolean show_version
= FALSE
;
4318 bfd_boolean formats_info
= FALSE
;
4321 char *output_file
= NULL
;
4325 while ((c
= getopt_long (argc
, argv
, "I:O:F:K:MN:R:o:sSpdgxXHhVvwDU",
4326 strip_options
, (int *) 0)) != EOF
)
4331 input_target
= optarg
;
4334 output_target
= optarg
;
4337 input_target
= output_target
= optarg
;
4340 handle_remove_section_option (optarg
);
4342 case OPTION_REMOVE_RELOCS
:
4343 handle_remove_relocations_option (optarg
);
4346 strip_symbols
= STRIP_ALL
;
4350 case 'd': /* Historic BSD alias for -g. Used by early NetBSD. */
4351 strip_symbols
= STRIP_DEBUG
;
4353 case OPTION_STRIP_DWO
:
4354 strip_symbols
= STRIP_DWO
;
4356 case OPTION_STRIP_UNNEEDED
:
4357 strip_symbols
= STRIP_UNNEEDED
;
4360 add_specific_symbol (optarg
, keep_specific_htab
);
4365 case OPTION_NO_MERGE_NOTES
:
4366 merge_notes
= FALSE
;
4369 add_specific_symbol (optarg
, strip_specific_htab
);
4372 output_file
= optarg
;
4375 preserve_dates
= TRUE
;
4378 deterministic
= TRUE
;
4381 deterministic
= FALSE
;
4384 discard_locals
= LOCALS_ALL
;
4387 discard_locals
= LOCALS_START_L
;
4393 show_version
= TRUE
;
4395 case OPTION_FORMATS_INFO
:
4396 formats_info
= TRUE
;
4398 case OPTION_ONLY_KEEP_DEBUG
:
4399 strip_symbols
= STRIP_NONDEBUG
;
4401 case OPTION_KEEP_FILE_SYMBOLS
:
4402 keep_file_symbols
= 1;
4405 /* We've been given a long option. */
4412 strip_usage (stdout
, 0);
4414 strip_usage (stderr
, 1);
4425 print_version ("strip");
4427 default_deterministic ();
4429 /* Default is to strip all symbols. */
4430 if (strip_symbols
== STRIP_UNDEF
4431 && discard_locals
== LOCALS_UNDEF
4432 && htab_elements (strip_specific_htab
) == 0)
4433 strip_symbols
= STRIP_ALL
;
4435 if (output_target
== NULL
)
4436 output_target
= input_target
;
4440 || (output_file
!= NULL
&& (i
+ 1) < argc
))
4441 strip_usage (stderr
, 1);
4443 for (; i
< argc
; i
++)
4445 int hold_status
= status
;
4446 struct stat statbuf
;
4449 if (get_file_size (argv
[i
]) < 1)
4456 /* No need to check the return value of stat().
4457 It has already been checked in get_file_size(). */
4458 stat (argv
[i
], &statbuf
);
4460 if (output_file
== NULL
4461 || filename_cmp (argv
[i
], output_file
) == 0)
4462 tmpname
= make_tempname (argv
[i
]);
4464 tmpname
= output_file
;
4466 if (tmpname
== NULL
)
4468 bfd_nonfatal_message (argv
[i
], NULL
, NULL
,
4469 _("could not create temporary file to hold stripped copy"));
4475 copy_file (argv
[i
], tmpname
, input_target
, output_target
, NULL
);
4479 set_times (tmpname
, &statbuf
);
4480 if (output_file
!= tmpname
)
4481 status
= (smart_rename (tmpname
,
4482 output_file
? output_file
: argv
[i
],
4483 preserve_dates
) != 0);
4485 status
= hold_status
;
4488 unlink_if_ordinary (tmpname
);
4489 if (output_file
!= tmpname
)
4496 /* Set up PE subsystem. */
4499 set_pe_subsystem (const char *s
)
4501 const char *version
, *subsystem
;
4511 { "native", 0, IMAGE_SUBSYSTEM_NATIVE
},
4512 { "windows", 0, IMAGE_SUBSYSTEM_WINDOWS_GUI
},
4513 { "console", 0, IMAGE_SUBSYSTEM_WINDOWS_CUI
},
4514 { "posix", 0, IMAGE_SUBSYSTEM_POSIX_CUI
},
4515 { "wince", 0, IMAGE_SUBSYSTEM_WINDOWS_CE_GUI
},
4516 { "efi-app", 1, IMAGE_SUBSYSTEM_EFI_APPLICATION
},
4517 { "efi-bsd", 1, IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER
},
4518 { "efi-rtd", 1, IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER
},
4519 { "sal-rtd", 1, IMAGE_SUBSYSTEM_SAL_RUNTIME_DRIVER
},
4520 { "xbox", 0, IMAGE_SUBSYSTEM_XBOX
}
4526 /* Check for the presence of a version number. */
4527 version
= strchr (s
, ':');
4528 if (version
== NULL
)
4532 int len
= version
- s
;
4536 version
= copy
+ 1 + len
;
4537 pe_major_subsystem_version
= strtoul (version
, ©
, 0);
4539 pe_minor_subsystem_version
= strtoul (copy
+ 1, ©
, 0);
4541 non_fatal (_("%s: bad version in PE subsystem"), s
);
4544 /* Check for numeric subsystem. */
4545 value
= (short) strtol (subsystem
, ©
, 0);
4548 for (i
= 0; i
< ARRAY_SIZE (v
); i
++)
4549 if (v
[i
].value
== value
)
4551 pe_subsystem
= value
;
4552 set_def
= v
[i
].set_def
;
4558 /* Search for subsystem by name. */
4559 for (i
= 0; i
< ARRAY_SIZE (v
); i
++)
4560 if (strcmp (subsystem
, v
[i
].name
) == 0)
4562 pe_subsystem
= v
[i
].value
;
4563 set_def
= v
[i
].set_def
;
4571 fatal (_("unknown PE subsystem: %s"), s
);
4576 if (pe_file_alignment
== (bfd_vma
) -1)
4577 pe_file_alignment
= PE_DEF_FILE_ALIGNMENT
;
4578 if (pe_section_alignment
== (bfd_vma
) -1)
4579 pe_section_alignment
= PE_DEF_SECTION_ALIGNMENT
;
4583 free ((char *) subsystem
);
4586 /* Convert EFI target to PEI target. */
4589 convert_efi_target (char *efi
)
4595 if (strcmp (efi
+ 4, "ia32") == 0)
4597 /* Change ia32 to i386. */
4602 else if (strcmp (efi
+ 4, "x86_64") == 0)
4604 /* Change x86_64 to x86-64. */
4609 /* Allocate and return a pointer to a struct section_add, initializing the
4610 structure using ARG, a string in the format "sectionname=filename".
4611 The returned structure will have its next pointer set to NEXT. The
4612 OPTION field is the name of the command line option currently being
4613 parsed, and is only used if an error needs to be reported. */
4615 static struct section_add
*
4616 init_section_add (const char *arg
,
4617 struct section_add
*next
,
4620 struct section_add
*pa
;
4623 s
= strchr (arg
, '=');
4625 fatal (_("bad format for %s"), option
);
4627 pa
= (struct section_add
*) xmalloc (sizeof (struct section_add
));
4628 pa
->name
= xstrndup (arg
, s
- arg
);
4629 pa
->filename
= s
+ 1;
4631 pa
->contents
= NULL
;
4637 /* Load the file specified in PA, allocating memory to hold the file
4638 contents, and store a pointer to the allocated memory in the contents
4639 field of PA. The size field of PA is also updated. All errors call
4643 section_add_load_file (struct section_add
*pa
)
4648 /* We don't use get_file_size so that we can do
4649 --add-section .note.GNU_stack=/dev/null
4650 get_file_size doesn't work on /dev/null. */
4652 f
= fopen (pa
->filename
, FOPEN_RB
);
4654 fatal (_("cannot open: %s: %s"),
4655 pa
->filename
, strerror (errno
));
4659 pa
->contents
= (bfd_byte
*) xmalloc (alloc
);
4667 pa
->contents
= (bfd_byte
*) xrealloc (pa
->contents
, alloc
);
4670 got
= fread (pa
->contents
+ off
, 1, alloc
- off
, f
);
4672 fatal (_("%s: fread failed"), pa
->filename
);
4683 copy_main (int argc
, char *argv
[])
4685 char *input_filename
= NULL
;
4686 char *output_filename
= NULL
;
4688 char *input_target
= NULL
;
4689 char *output_target
= NULL
;
4690 bfd_boolean show_version
= FALSE
;
4691 bfd_boolean change_warn
= TRUE
;
4692 bfd_boolean formats_info
= FALSE
;
4694 struct stat statbuf
;
4695 const bfd_arch_info_type
*input_arch
= NULL
;
4697 while ((c
= getopt_long (argc
, argv
, "b:B:i:I:j:K:MN:s:O:d:F:L:G:R:SpgxXHhVvW:wDU",
4698 copy_options
, (int *) 0)) != EOF
)
4703 copy_byte
= atoi (optarg
);
4705 fatal (_("byte number must be non-negative"));
4709 input_arch
= bfd_scan_arch (optarg
);
4710 if (input_arch
== NULL
)
4711 fatal (_("architecture %s unknown"), optarg
);
4717 interleave
= atoi (optarg
);
4719 fatal (_("interleave must be positive"));
4725 case OPTION_INTERLEAVE_WIDTH
:
4726 copy_width
= atoi (optarg
);
4728 fatal(_("interleave width must be positive"));
4732 case 's': /* "source" - 'I' is preferred */
4733 input_target
= optarg
;
4737 case 'd': /* "destination" - 'O' is preferred */
4738 output_target
= optarg
;
4742 input_target
= output_target
= optarg
;
4746 find_section_list (optarg
, TRUE
, SECTION_CONTEXT_COPY
);
4747 sections_copied
= TRUE
;
4751 handle_remove_section_option (optarg
);
4754 case OPTION_REMOVE_RELOCS
:
4755 handle_remove_relocations_option (optarg
);
4759 strip_symbols
= STRIP_ALL
;
4763 strip_symbols
= STRIP_DEBUG
;
4766 case OPTION_STRIP_DWO
:
4767 strip_symbols
= STRIP_DWO
;
4770 case OPTION_STRIP_UNNEEDED
:
4771 strip_symbols
= STRIP_UNNEEDED
;
4774 case OPTION_ONLY_KEEP_DEBUG
:
4775 strip_symbols
= STRIP_NONDEBUG
;
4778 case OPTION_KEEP_FILE_SYMBOLS
:
4779 keep_file_symbols
= 1;
4782 case OPTION_ADD_GNU_DEBUGLINK
:
4783 long_section_names
= ENABLE
;
4784 gnu_debuglink_filename
= optarg
;
4788 add_specific_symbol (optarg
, keep_specific_htab
);
4794 case OPTION_NO_MERGE_NOTES
:
4795 merge_notes
= FALSE
;
4799 add_specific_symbol (optarg
, strip_specific_htab
);
4802 case OPTION_STRIP_UNNEEDED_SYMBOL
:
4803 add_specific_symbol (optarg
, strip_unneeded_htab
);
4807 add_specific_symbol (optarg
, localize_specific_htab
);
4810 case OPTION_GLOBALIZE_SYMBOL
:
4811 add_specific_symbol (optarg
, globalize_specific_htab
);
4815 add_specific_symbol (optarg
, keepglobal_specific_htab
);
4819 add_specific_symbol (optarg
, weaken_specific_htab
);
4823 preserve_dates
= TRUE
;
4827 deterministic
= TRUE
;
4831 deterministic
= FALSE
;
4839 discard_locals
= LOCALS_ALL
;
4843 discard_locals
= LOCALS_START_L
;
4851 show_version
= TRUE
;
4854 case OPTION_FORMATS_INFO
:
4855 formats_info
= TRUE
;
4862 case OPTION_ADD_SECTION
:
4863 add_sections
= init_section_add (optarg
, add_sections
,
4865 section_add_load_file (add_sections
);
4868 case OPTION_UPDATE_SECTION
:
4869 update_sections
= init_section_add (optarg
, update_sections
,
4870 "--update-section");
4871 section_add_load_file (update_sections
);
4874 case OPTION_DUMP_SECTION
:
4875 dump_sections
= init_section_add (optarg
, dump_sections
,
4879 case OPTION_ADD_SYMBOL
:
4882 struct addsym_node
*newsym
= xmalloc (sizeof *newsym
);
4884 newsym
->next
= NULL
;
4885 s
= strchr (optarg
, '=');
4887 fatal (_("bad format for %s"), "--add-symbol");
4888 t
= strchr (s
+ 1, ':');
4890 newsym
->symdef
= xstrndup (optarg
, s
- optarg
);
4893 newsym
->section
= xstrndup (s
+ 1, t
- (s
+ 1));
4894 newsym
->symval
= strtol (t
+ 1, NULL
, 0);
4898 newsym
->section
= NULL
;
4899 newsym
->symval
= strtol (s
+ 1, NULL
, 0);
4903 t
= strchr (t
+ 1, ',');
4904 newsym
->othersym
= NULL
;
4906 newsym
->flags
= parse_symflags (t
+1, &newsym
->othersym
);
4908 newsym
->flags
= BSF_GLOBAL
;
4910 /* Keep 'othersym' symbols at the front of the list. */
4911 if (newsym
->othersym
)
4913 newsym
->next
= add_sym_list
;
4915 add_sym_tail
= &newsym
->next
;
4916 add_sym_list
= newsym
;
4920 *add_sym_tail
= newsym
;
4921 add_sym_tail
= &newsym
->next
;
4927 case OPTION_CHANGE_START
:
4928 change_start
= parse_vma (optarg
, "--change-start");
4931 case OPTION_CHANGE_SECTION_ADDRESS
:
4932 case OPTION_CHANGE_SECTION_LMA
:
4933 case OPTION_CHANGE_SECTION_VMA
:
4935 struct section_list
* p
;
4936 unsigned int context
= 0;
4940 char *option
= NULL
;
4945 case OPTION_CHANGE_SECTION_ADDRESS
:
4946 option
= "--change-section-address";
4947 context
= SECTION_CONTEXT_ALTER_LMA
| SECTION_CONTEXT_ALTER_VMA
;
4949 case OPTION_CHANGE_SECTION_LMA
:
4950 option
= "--change-section-lma";
4951 context
= SECTION_CONTEXT_ALTER_LMA
;
4953 case OPTION_CHANGE_SECTION_VMA
:
4954 option
= "--change-section-vma";
4955 context
= SECTION_CONTEXT_ALTER_VMA
;
4959 s
= strchr (optarg
, '=');
4962 s
= strchr (optarg
, '+');
4965 s
= strchr (optarg
, '-');
4967 fatal (_("bad format for %s"), option
);
4972 /* Correct the context. */
4975 case OPTION_CHANGE_SECTION_ADDRESS
:
4976 context
= SECTION_CONTEXT_SET_LMA
| SECTION_CONTEXT_SET_VMA
;
4978 case OPTION_CHANGE_SECTION_LMA
:
4979 context
= SECTION_CONTEXT_SET_LMA
;
4981 case OPTION_CHANGE_SECTION_VMA
:
4982 context
= SECTION_CONTEXT_SET_VMA
;
4988 name
= (char *) xmalloc (len
+ 1);
4989 strncpy (name
, optarg
, len
);
4992 p
= find_section_list (name
, TRUE
, context
);
4994 val
= parse_vma (s
+ 1, option
);
5000 case OPTION_CHANGE_SECTION_ADDRESS
:
5004 case OPTION_CHANGE_SECTION_LMA
:
5008 case OPTION_CHANGE_SECTION_VMA
:
5015 case OPTION_CHANGE_ADDRESSES
:
5016 change_section_address
= parse_vma (optarg
, "--change-addresses");
5017 change_start
= change_section_address
;
5020 case OPTION_CHANGE_WARNINGS
:
5024 case OPTION_CHANGE_LEADING_CHAR
:
5025 change_leading_char
= TRUE
;
5028 case OPTION_COMPRESS_DEBUG_SECTIONS
:
5031 if (strcasecmp (optarg
, "none") == 0)
5032 do_debug_sections
= decompress
;
5033 else if (strcasecmp (optarg
, "zlib") == 0)
5034 do_debug_sections
= compress_zlib
;
5035 else if (strcasecmp (optarg
, "zlib-gnu") == 0)
5036 do_debug_sections
= compress_gnu_zlib
;
5037 else if (strcasecmp (optarg
, "zlib-gabi") == 0)
5038 do_debug_sections
= compress_gabi_zlib
;
5040 fatal (_("unrecognized --compress-debug-sections type `%s'"),
5044 do_debug_sections
= compress
;
5047 case OPTION_DEBUGGING
:
5048 convert_debugging
= TRUE
;
5051 case OPTION_DECOMPRESS_DEBUG_SECTIONS
:
5052 do_debug_sections
= decompress
;
5055 case OPTION_ELF_STT_COMMON
:
5056 if (strcasecmp (optarg
, "yes") == 0)
5057 do_elf_stt_common
= elf_stt_common
;
5058 else if (strcasecmp (optarg
, "no") == 0)
5059 do_elf_stt_common
= no_elf_stt_common
;
5061 fatal (_("unrecognized --elf-stt-common= option `%s'"),
5065 case OPTION_GAP_FILL
:
5067 bfd_vma gap_fill_vma
;
5069 gap_fill_vma
= parse_vma (optarg
, "--gap-fill");
5070 gap_fill
= (bfd_byte
) gap_fill_vma
;
5071 if ((bfd_vma
) gap_fill
!= gap_fill_vma
)
5075 sprintf_vma (buff
, gap_fill_vma
);
5077 non_fatal (_("Warning: truncating gap-fill from 0x%s to 0x%x"),
5080 gap_fill_set
= TRUE
;
5084 case OPTION_NO_CHANGE_WARNINGS
:
5085 change_warn
= FALSE
;
5089 pad_to
= parse_vma (optarg
, "--pad-to");
5093 case OPTION_REMOVE_LEADING_CHAR
:
5094 remove_leading_char
= TRUE
;
5097 case OPTION_REDEFINE_SYM
:
5099 /* Insert this redefinition onto redefine_specific_htab. */
5103 const char *nextarg
;
5104 char *source
, *target
;
5106 s
= strchr (optarg
, '=');
5108 fatal (_("bad format for %s"), "--redefine-sym");
5111 source
= (char *) xmalloc (len
+ 1);
5112 strncpy (source
, optarg
, len
);
5116 len
= strlen (nextarg
);
5117 target
= (char *) xmalloc (len
+ 1);
5118 strcpy (target
, nextarg
);
5120 add_redefine_and_check ("--redefine-sym", source
, target
);
5127 case OPTION_REDEFINE_SYMS
:
5128 add_redefine_syms_file (optarg
);
5131 case OPTION_SET_SECTION_FLAGS
:
5133 struct section_list
*p
;
5138 s
= strchr (optarg
, '=');
5140 fatal (_("bad format for %s"), "--set-section-flags");
5143 name
= (char *) xmalloc (len
+ 1);
5144 strncpy (name
, optarg
, len
);
5147 p
= find_section_list (name
, TRUE
, SECTION_CONTEXT_SET_FLAGS
);
5149 p
->flags
= parse_flags (s
+ 1);
5153 case OPTION_RENAME_SECTION
:
5156 const char *eq
, *fl
;
5161 eq
= strchr (optarg
, '=');
5163 fatal (_("bad format for %s"), "--rename-section");
5167 fatal (_("bad format for %s"), "--rename-section");
5169 old_name
= (char *) xmalloc (len
+ 1);
5170 strncpy (old_name
, optarg
, len
);
5174 fl
= strchr (eq
, ',');
5177 flags
= parse_flags (fl
+ 1);
5187 fatal (_("bad format for %s"), "--rename-section");
5189 new_name
= (char *) xmalloc (len
+ 1);
5190 strncpy (new_name
, eq
, len
);
5193 add_section_rename (old_name
, new_name
, flags
);
5197 case OPTION_SET_START
:
5198 set_start
= parse_vma (optarg
, "--set-start");
5199 set_start_set
= TRUE
;
5202 case OPTION_SREC_LEN
:
5203 _bfd_srec_len
= parse_vma (optarg
, "--srec-len");
5206 case OPTION_SREC_FORCES3
:
5207 _bfd_srec_forceS3
= TRUE
;
5210 case OPTION_STRIP_SYMBOLS
:
5211 add_specific_symbols (optarg
, strip_specific_htab
);
5214 case OPTION_STRIP_UNNEEDED_SYMBOLS
:
5215 add_specific_symbols (optarg
, strip_unneeded_htab
);
5218 case OPTION_KEEP_SYMBOLS
:
5219 add_specific_symbols (optarg
, keep_specific_htab
);
5222 case OPTION_LOCALIZE_HIDDEN
:
5223 localize_hidden
= TRUE
;
5226 case OPTION_LOCALIZE_SYMBOLS
:
5227 add_specific_symbols (optarg
, localize_specific_htab
);
5230 case OPTION_LONG_SECTION_NAMES
:
5231 if (!strcmp ("enable", optarg
))
5232 long_section_names
= ENABLE
;
5233 else if (!strcmp ("disable", optarg
))
5234 long_section_names
= DISABLE
;
5235 else if (!strcmp ("keep", optarg
))
5236 long_section_names
= KEEP
;
5238 fatal (_("unknown long section names option '%s'"), optarg
);
5241 case OPTION_GLOBALIZE_SYMBOLS
:
5242 add_specific_symbols (optarg
, globalize_specific_htab
);
5245 case OPTION_KEEPGLOBAL_SYMBOLS
:
5246 add_specific_symbols (optarg
, keepglobal_specific_htab
);
5249 case OPTION_WEAKEN_SYMBOLS
:
5250 add_specific_symbols (optarg
, weaken_specific_htab
);
5253 case OPTION_ALT_MACH_CODE
:
5254 use_alt_mach_code
= strtoul (optarg
, NULL
, 0);
5255 if (use_alt_mach_code
== 0)
5256 fatal (_("unable to parse alternative machine code"));
5259 case OPTION_PREFIX_SYMBOLS
:
5260 prefix_symbols_string
= optarg
;
5263 case OPTION_PREFIX_SECTIONS
:
5264 prefix_sections_string
= optarg
;
5267 case OPTION_PREFIX_ALLOC_SECTIONS
:
5268 prefix_alloc_sections_string
= optarg
;
5271 case OPTION_READONLY_TEXT
:
5272 bfd_flags_to_set
|= WP_TEXT
;
5273 bfd_flags_to_clear
&= ~WP_TEXT
;
5276 case OPTION_WRITABLE_TEXT
:
5277 bfd_flags_to_clear
|= WP_TEXT
;
5278 bfd_flags_to_set
&= ~WP_TEXT
;
5282 bfd_flags_to_set
|= D_PAGED
;
5283 bfd_flags_to_clear
&= ~D_PAGED
;
5287 bfd_flags_to_clear
|= D_PAGED
;
5288 bfd_flags_to_set
&= ~D_PAGED
;
5291 case OPTION_EXTRACT_DWO
:
5292 strip_symbols
= STRIP_NONDWO
;
5295 case OPTION_EXTRACT_SYMBOL
:
5296 extract_symbol
= TRUE
;
5299 case OPTION_REVERSE_BYTES
:
5301 int prev
= reverse_bytes
;
5303 reverse_bytes
= atoi (optarg
);
5304 if ((reverse_bytes
<= 0) || ((reverse_bytes
% 2) != 0))
5305 fatal (_("number of bytes to reverse must be positive and even"));
5307 if (prev
&& prev
!= reverse_bytes
)
5308 non_fatal (_("Warning: ignoring previous --reverse-bytes value of %d"),
5313 case OPTION_FILE_ALIGNMENT
:
5314 pe_file_alignment
= parse_vma (optarg
, "--file-alignment");
5320 pe_heap_reserve
= strtoul (optarg
, &end
, 0);
5322 || (*end
!= '.' && *end
!= '\0'))
5323 non_fatal (_("%s: invalid reserve value for --heap"),
5325 else if (*end
!= '\0')
5327 pe_heap_commit
= strtoul (end
+ 1, &end
, 0);
5329 non_fatal (_("%s: invalid commit value for --heap"),
5335 case OPTION_IMAGE_BASE
:
5336 pe_image_base
= parse_vma (optarg
, "--image-base");
5339 case OPTION_SECTION_ALIGNMENT
:
5340 pe_section_alignment
= parse_vma (optarg
,
5341 "--section-alignment");
5344 case OPTION_SUBSYSTEM
:
5345 set_pe_subsystem (optarg
);
5351 pe_stack_reserve
= strtoul (optarg
, &end
, 0);
5353 || (*end
!= '.' && *end
!= '\0'))
5354 non_fatal (_("%s: invalid reserve value for --stack"),
5356 else if (*end
!= '\0')
5358 pe_stack_commit
= strtoul (end
+ 1, &end
, 0);
5360 non_fatal (_("%s: invalid commit value for --stack"),
5367 /* We've been given a long option. */
5372 copy_usage (stdout
, 0);
5375 copy_usage (stderr
, 1);
5386 print_version ("objcopy");
5388 if (interleave
&& copy_byte
== -1)
5389 fatal (_("interleave start byte must be set with --byte"));
5391 if (copy_byte
>= interleave
)
5392 fatal (_("byte number must be less than interleave"));
5394 if (copy_width
> interleave
- copy_byte
)
5395 fatal (_("interleave width must be less than or equal to interleave - byte`"));
5397 if (optind
== argc
|| optind
+ 2 < argc
)
5398 copy_usage (stderr
, 1);
5400 input_filename
= argv
[optind
];
5401 if (optind
+ 1 < argc
)
5402 output_filename
= argv
[optind
+ 1];
5404 default_deterministic ();
5406 /* Default is to strip no symbols. */
5407 if (strip_symbols
== STRIP_UNDEF
&& discard_locals
== LOCALS_UNDEF
)
5408 strip_symbols
= STRIP_NONE
;
5410 if (output_target
== NULL
)
5411 output_target
= input_target
;
5413 /* Convert input EFI target to PEI target. */
5414 if (input_target
!= NULL
5415 && strncmp (input_target
, "efi-", 4) == 0)
5419 efi
= xstrdup (output_target
+ 4);
5420 if (strncmp (efi
, "bsdrv-", 6) == 0
5421 || strncmp (efi
, "rtdrv-", 6) == 0)
5423 else if (strncmp (efi
, "app-", 4) != 0)
5424 fatal (_("unknown input EFI target: %s"), input_target
);
5427 convert_efi_target (efi
);
5430 /* Convert output EFI target to PEI target. */
5431 if (output_target
!= NULL
5432 && strncmp (output_target
, "efi-", 4) == 0)
5436 efi
= xstrdup (output_target
+ 4);
5437 if (strncmp (efi
, "app-", 4) == 0)
5439 if (pe_subsystem
== -1)
5440 pe_subsystem
= IMAGE_SUBSYSTEM_EFI_APPLICATION
;
5442 else if (strncmp (efi
, "bsdrv-", 6) == 0)
5444 if (pe_subsystem
== -1)
5445 pe_subsystem
= IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER
;
5448 else if (strncmp (efi
, "rtdrv-", 6) == 0)
5450 if (pe_subsystem
== -1)
5451 pe_subsystem
= IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER
;
5455 fatal (_("unknown output EFI target: %s"), output_target
);
5457 if (pe_file_alignment
== (bfd_vma
) -1)
5458 pe_file_alignment
= PE_DEF_FILE_ALIGNMENT
;
5459 if (pe_section_alignment
== (bfd_vma
) -1)
5460 pe_section_alignment
= PE_DEF_SECTION_ALIGNMENT
;
5462 output_target
= efi
;
5463 convert_efi_target (efi
);
5467 if (stat (input_filename
, & statbuf
) < 0)
5468 fatal (_("warning: could not locate '%s'. System error message: %s"),
5469 input_filename
, strerror (errno
));
5471 /* If there is no destination file, or the source and destination files
5472 are the same, then create a temp and rename the result into the input. */
5473 if (output_filename
== NULL
5474 || filename_cmp (input_filename
, output_filename
) == 0)
5475 tmpname
= make_tempname (input_filename
);
5477 tmpname
= output_filename
;
5479 if (tmpname
== NULL
)
5480 fatal (_("warning: could not create temporary file whilst copying '%s', (error: %s)"),
5481 input_filename
, strerror (errno
));
5483 copy_file (input_filename
, tmpname
, input_target
, output_target
, input_arch
);
5487 set_times (tmpname
, &statbuf
);
5488 if (tmpname
!= output_filename
)
5489 status
= (smart_rename (tmpname
, input_filename
,
5490 preserve_dates
) != 0);
5493 unlink_if_ordinary (tmpname
);
5495 if (tmpname
!= output_filename
)
5500 struct section_list
*p
;
5502 for (p
= change_sections
; p
!= NULL
; p
= p
->next
)
5506 if (p
->context
& (SECTION_CONTEXT_SET_VMA
| SECTION_CONTEXT_ALTER_VMA
))
5510 sprintf_vma (buff
, p
->vma_val
);
5512 /* xgettext:c-format */
5513 non_fatal (_("%s %s%c0x%s never used"),
5514 "--change-section-vma",
5516 p
->context
& SECTION_CONTEXT_SET_VMA
? '=' : '+',
5520 if (p
->context
& (SECTION_CONTEXT_SET_LMA
| SECTION_CONTEXT_ALTER_LMA
))
5524 sprintf_vma (buff
, p
->lma_val
);
5526 /* xgettext:c-format */
5527 non_fatal (_("%s %s%c0x%s never used"),
5528 "--change-section-lma",
5530 p
->context
& SECTION_CONTEXT_SET_LMA
? '=' : '+',
5541 main (int argc
, char *argv
[])
5543 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
5544 setlocale (LC_MESSAGES
, "");
5546 #if defined (HAVE_SETLOCALE)
5547 setlocale (LC_CTYPE
, "");
5549 bindtextdomain (PACKAGE
, LOCALEDIR
);
5550 textdomain (PACKAGE
);
5552 program_name
= argv
[0];
5553 xmalloc_set_program_name (program_name
);
5555 START_PROGRESS (program_name
, 0);
5557 expandargv (&argc
, &argv
);
5559 strip_symbols
= STRIP_UNDEF
;
5560 discard_locals
= LOCALS_UNDEF
;
5563 set_default_bfd_target ();
5567 int i
= strlen (program_name
);
5568 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5569 /* Drop the .exe suffix, if any. */
5570 if (i
> 4 && FILENAME_CMP (program_name
+ i
- 4, ".exe") == 0)
5573 program_name
[i
] = '\0';
5576 is_strip
= (i
>= 5 && FILENAME_CMP (program_name
+ i
- 5, "strip") == 0);
5579 create_symbol_htabs ();
5582 bfd_set_error_program_name (argv
[0]);
5585 strip_main (argc
, argv
);
5587 copy_main (argc
, argv
);
5589 END_PROGRESS (program_name
);