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. */
1146 /* Do not free the buffer. Parts of it will have been referenced
1147 in the calls to add_specific_symbol. */
1150 /* See whether a symbol should be stripped or kept
1151 based on strip_specific_list and keep_symbols. */
1154 is_specified_symbol_predicate (void **slot
, void *data
)
1156 struct is_specified_symbol_predicate_data
*d
=
1157 (struct is_specified_symbol_predicate_data
*) data
;
1158 const char *slot_name
= (char *) *slot
;
1160 if (*slot_name
!= '!')
1162 if (! fnmatch (slot_name
, d
->name
, 0))
1165 /* Continue traversal, there might be a non-match rule. */
1171 if (! fnmatch (slot_name
+ 1, d
->name
, 0))
1174 /* Stop traversal. */
1179 /* Continue traversal. */
1184 is_specified_symbol (const char *name
, htab_t htab
)
1188 struct is_specified_symbol_predicate_data data
;
1193 htab_traverse (htab
, is_specified_symbol_predicate
, &data
);
1198 return htab_find (htab
, name
) != NULL
;
1201 /* Return a pointer to the symbol used as a signature for GROUP. */
1204 group_signature (asection
*group
)
1206 bfd
*abfd
= group
->owner
;
1207 Elf_Internal_Shdr
*ghdr
;
1209 /* PR 20089: An earlier error may have prevented us from loading the symbol table. */
1213 if (bfd_get_flavour (abfd
) != bfd_target_elf_flavour
)
1216 ghdr
= &elf_section_data (group
)->this_hdr
;
1217 if (ghdr
->sh_link
== elf_onesymtab (abfd
))
1219 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1220 Elf_Internal_Shdr
*symhdr
= &elf_symtab_hdr (abfd
);
1222 if (ghdr
->sh_info
> 0
1223 && ghdr
->sh_info
< symhdr
->sh_size
/ bed
->s
->sizeof_sym
)
1224 return isympp
[ghdr
->sh_info
- 1];
1229 /* Return TRUE if the section is a DWO section. */
1232 is_dwo_section (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
1234 const char *name
= bfd_get_section_name (abfd
, sec
);
1235 int len
= strlen (name
);
1237 return strncmp (name
+ len
- 4, ".dwo", 4) == 0;
1240 /* Return TRUE if section SEC is in the update list. */
1243 is_update_section (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
1245 if (update_sections
!= NULL
)
1247 struct section_add
*pupdate
;
1249 for (pupdate
= update_sections
;
1251 pupdate
= pupdate
->next
)
1253 if (strcmp (sec
->name
, pupdate
->name
) == 0)
1262 is_merged_note_section (bfd
* abfd
, asection
* sec
)
1265 && bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1266 && elf_section_data (sec
)->this_hdr
.sh_type
== SHT_NOTE
1267 /* FIXME: We currently only support merging GNU_BUILD_NOTEs.
1268 We should add support for more note types. */
1269 && ((elf_section_data (sec
)->this_hdr
.sh_flags
& SHF_GNU_BUILD_NOTE
) != 0
1270 /* Old versions of GAS (prior to 2.27) could not set the section
1271 flags to OS-specific values, so we also accept sections with the
1273 || (strcmp (sec
->name
, GNU_BUILD_ATTRS_SECTION_NAME
) == 0)))
1279 /* See if a non-group section is being removed. */
1282 is_strip_section_1 (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
1284 if (sections_removed
|| sections_copied
)
1286 struct section_list
*p
;
1287 struct section_list
*q
;
1289 p
= find_section_list (bfd_get_section_name (abfd
, sec
), FALSE
,
1290 SECTION_CONTEXT_REMOVE
);
1291 q
= find_section_list (bfd_get_section_name (abfd
, sec
), FALSE
,
1292 SECTION_CONTEXT_COPY
);
1295 fatal (_("error: section %s matches both remove and copy options"),
1296 bfd_get_section_name (abfd
, sec
));
1297 if (p
&& is_update_section (abfd
, sec
))
1298 fatal (_("error: section %s matches both update and remove options"),
1299 bfd_get_section_name (abfd
, sec
));
1303 if (sections_copied
&& q
== NULL
)
1307 if ((bfd_get_section_flags (abfd
, sec
) & SEC_DEBUGGING
) != 0)
1309 if (strip_symbols
== STRIP_DEBUG
1310 || strip_symbols
== STRIP_UNNEEDED
1311 || strip_symbols
== STRIP_ALL
1312 || discard_locals
== LOCALS_ALL
1313 || convert_debugging
)
1315 /* By default we don't want to strip .reloc section.
1316 This section has for pe-coff special meaning. See
1317 pe-dll.c file in ld, and peXXigen.c in bfd for details. */
1318 if (strcmp (bfd_get_section_name (abfd
, sec
), ".reloc") != 0)
1322 if (strip_symbols
== STRIP_DWO
)
1323 return is_dwo_section (abfd
, sec
);
1325 if (strip_symbols
== STRIP_NONDEBUG
)
1329 if (strip_symbols
== STRIP_NONDWO
)
1330 return !is_dwo_section (abfd
, sec
);
1335 /* See if a section is being removed. */
1338 is_strip_section (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
1340 if (is_strip_section_1 (abfd
, sec
))
1343 if ((bfd_get_section_flags (abfd
, sec
) & SEC_GROUP
) != 0)
1347 asection
*elt
, *first
;
1349 gsym
= group_signature (sec
);
1350 /* Strip groups without a valid signature. */
1355 If we are going to strip the group signature symbol, then
1356 strip the group section too. */
1358 if ((strip_symbols
== STRIP_ALL
1359 && !is_specified_symbol (gname
, keep_specific_htab
))
1360 || is_specified_symbol (gname
, strip_specific_htab
))
1363 /* Remove the group section if all members are removed. */
1364 first
= elt
= elf_next_in_group (sec
);
1367 if (!is_strip_section_1 (abfd
, elt
))
1369 elt
= elf_next_in_group (elt
);
1381 is_nondebug_keep_contents_section (bfd
*ibfd
, asection
*isection
)
1383 /* Always keep ELF note sections. */
1384 if (ibfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1385 return (elf_section_type (isection
) == SHT_NOTE
);
1387 /* Always keep the .buildid section for PE/COFF.
1389 Strictly, this should be written "always keep the section storing the debug
1390 directory", but that may be the .text section for objects produced by some
1391 tools, which it is not sensible to keep. */
1392 if (ibfd
->xvec
->flavour
== bfd_target_coff_flavour
)
1393 return (strcmp (bfd_get_section_name (ibfd
, isection
), ".buildid") == 0);
1398 /* Return true if SYM is a hidden symbol. */
1401 is_hidden_symbol (asymbol
*sym
)
1403 elf_symbol_type
*elf_sym
;
1405 elf_sym
= elf_symbol_from (sym
->the_bfd
, sym
);
1406 if (elf_sym
!= NULL
)
1407 switch (ELF_ST_VISIBILITY (elf_sym
->internal_elf_sym
.st_other
))
1417 need_sym_before (struct addsym_node
**node
, const char *sym
)
1420 struct addsym_node
*ptr
= add_sym_list
;
1422 /* 'othersym' symbols are at the front of the list. */
1423 for (count
= 0; count
< add_symbols
; count
++)
1427 else if (strcmp (ptr
->othersym
, sym
) == 0)
1429 free (ptr
->othersym
);
1430 ptr
->othersym
= ""; /* Empty name is hopefully never a valid symbol name. */
1440 create_new_symbol (struct addsym_node
*ptr
, bfd
*obfd
)
1442 asymbol
*sym
= bfd_make_empty_symbol (obfd
);
1444 bfd_asymbol_name (sym
) = ptr
->symdef
;
1445 sym
->value
= ptr
->symval
;
1446 sym
->flags
= ptr
->flags
;
1449 asection
*sec
= bfd_get_section_by_name (obfd
, ptr
->section
);
1451 fatal (_("Section %s not found"), ptr
->section
);
1455 sym
->section
= bfd_abs_section_ptr
;
1459 /* Choose which symbol entries to copy; put the result in OSYMS.
1460 We don't copy in place, because that confuses the relocs.
1461 Return the number of symbols to print. */
1464 filter_symbols (bfd
*abfd
, bfd
*obfd
, asymbol
**osyms
,
1465 asymbol
**isyms
, long symcount
)
1467 asymbol
**from
= isyms
, **to
= osyms
;
1468 long src_count
= 0, dst_count
= 0;
1469 int relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
1471 for (; src_count
< symcount
; src_count
++)
1473 asymbol
*sym
= from
[src_count
];
1474 flagword flags
= sym
->flags
;
1475 char *name
= (char *) bfd_asymbol_name (sym
);
1477 bfd_boolean used_in_reloc
= FALSE
;
1478 bfd_boolean undefined
;
1479 bfd_boolean rem_leading_char
;
1480 bfd_boolean add_leading_char
;
1482 undefined
= bfd_is_und_section (bfd_get_section (sym
));
1486 struct addsym_node
*ptr
;
1488 if (need_sym_before (&ptr
, name
))
1489 to
[dst_count
++] = create_new_symbol (ptr
, obfd
);
1492 if (htab_elements (redefine_specific_htab
) || section_rename_list
)
1496 new_name
= (char *) lookup_sym_redefinition (name
);
1497 if (new_name
== name
1498 && (flags
& BSF_SECTION_SYM
) != 0)
1499 new_name
= (char *) find_section_rename (name
, NULL
);
1500 bfd_asymbol_name (sym
) = new_name
;
1504 /* Check if we will remove the current leading character. */
1506 (name
[0] == bfd_get_symbol_leading_char (abfd
))
1507 && (change_leading_char
1508 || (remove_leading_char
1509 && ((flags
& (BSF_GLOBAL
| BSF_WEAK
)) != 0
1511 || bfd_is_com_section (bfd_get_section (sym
)))));
1513 /* Check if we will add a new leading character. */
1516 && (bfd_get_symbol_leading_char (obfd
) != '\0')
1517 && (bfd_get_symbol_leading_char (abfd
) == '\0'
1518 || (name
[0] == bfd_get_symbol_leading_char (abfd
)));
1520 /* Short circuit for change_leading_char if we can do it in-place. */
1521 if (rem_leading_char
&& add_leading_char
&& !prefix_symbols_string
)
1523 name
[0] = bfd_get_symbol_leading_char (obfd
);
1524 bfd_asymbol_name (sym
) = name
;
1525 rem_leading_char
= FALSE
;
1526 add_leading_char
= FALSE
;
1529 /* Remove leading char. */
1530 if (rem_leading_char
)
1531 bfd_asymbol_name (sym
) = ++name
;
1533 /* Add new leading char and/or prefix. */
1534 if (add_leading_char
|| prefix_symbols_string
)
1538 ptr
= n
= (char *) xmalloc (1 + strlen (prefix_symbols_string
)
1539 + strlen (name
) + 1);
1540 if (add_leading_char
)
1541 *ptr
++ = bfd_get_symbol_leading_char (obfd
);
1543 if (prefix_symbols_string
)
1545 strcpy (ptr
, prefix_symbols_string
);
1546 ptr
+= strlen (prefix_symbols_string
);
1550 bfd_asymbol_name (sym
) = n
;
1554 if (strip_symbols
== STRIP_ALL
)
1556 else if ((flags
& BSF_KEEP
) != 0 /* Used in relocation. */
1557 || ((flags
& BSF_SECTION_SYM
) != 0
1558 && ((*bfd_get_section (sym
)->symbol_ptr_ptr
)->flags
1562 used_in_reloc
= TRUE
;
1564 else if (relocatable
/* Relocatable file. */
1565 && ((flags
& (BSF_GLOBAL
| BSF_WEAK
)) != 0
1566 || bfd_is_com_section (bfd_get_section (sym
))))
1568 else if (bfd_decode_symclass (sym
) == 'I')
1569 /* Global symbols in $idata sections need to be retained
1570 even if relocatable is FALSE. External users of the
1571 library containing the $idata section may reference these
1574 else if ((flags
& BSF_GLOBAL
) != 0 /* Global symbol. */
1575 || (flags
& BSF_WEAK
) != 0
1577 || bfd_is_com_section (bfd_get_section (sym
)))
1578 keep
= strip_symbols
!= STRIP_UNNEEDED
;
1579 else if ((flags
& BSF_DEBUGGING
) != 0) /* Debugging symbol. */
1580 keep
= (strip_symbols
!= STRIP_DEBUG
1581 && strip_symbols
!= STRIP_UNNEEDED
1582 && ! convert_debugging
);
1583 else if (bfd_coff_get_comdat_section (abfd
, bfd_get_section (sym
)))
1584 /* COMDAT sections store special information in local
1585 symbols, so we cannot risk stripping any of them. */
1587 else /* Local symbol. */
1588 keep
= (strip_symbols
!= STRIP_UNNEEDED
1589 && (discard_locals
!= LOCALS_ALL
1590 && (discard_locals
!= LOCALS_START_L
1591 || ! bfd_is_local_label (abfd
, sym
))));
1593 if (keep
&& is_specified_symbol (name
, strip_specific_htab
))
1595 /* There are multiple ways to set 'keep' above, but if it
1596 was the relocatable symbol case, then that's an error. */
1599 non_fatal (_("not stripping symbol `%s' because it is named in a relocation"), name
);
1607 && !(flags
& BSF_KEEP
)
1608 && is_specified_symbol (name
, strip_unneeded_htab
))
1612 && ((keep_file_symbols
&& (flags
& BSF_FILE
))
1613 || is_specified_symbol (name
, keep_specific_htab
)))
1616 if (keep
&& is_strip_section (abfd
, bfd_get_section (sym
)))
1621 if ((flags
& BSF_GLOBAL
) != 0
1622 && (weaken
|| is_specified_symbol (name
, weaken_specific_htab
)))
1624 sym
->flags
&= ~ BSF_GLOBAL
;
1625 sym
->flags
|= BSF_WEAK
;
1629 && (flags
& (BSF_GLOBAL
| BSF_WEAK
))
1630 && (is_specified_symbol (name
, localize_specific_htab
)
1631 || (htab_elements (keepglobal_specific_htab
) != 0
1632 && ! is_specified_symbol (name
, keepglobal_specific_htab
))
1633 || (localize_hidden
&& is_hidden_symbol (sym
))))
1635 sym
->flags
&= ~ (BSF_GLOBAL
| BSF_WEAK
);
1636 sym
->flags
|= BSF_LOCAL
;
1640 && (flags
& BSF_LOCAL
)
1641 && is_specified_symbol (name
, globalize_specific_htab
))
1643 sym
->flags
&= ~ BSF_LOCAL
;
1644 sym
->flags
|= BSF_GLOBAL
;
1647 to
[dst_count
++] = sym
;
1652 struct addsym_node
*ptr
= add_sym_list
;
1654 for (src_count
= 0; src_count
< add_symbols
; src_count
++)
1658 if (strcmp (ptr
->othersym
, ""))
1659 fatal (_("'before=%s' not found"), ptr
->othersym
);
1662 to
[dst_count
++] = create_new_symbol (ptr
, obfd
);
1668 to
[dst_count
] = NULL
;
1673 /* Find the redefined name of symbol SOURCE. */
1676 lookup_sym_redefinition (const char *source
)
1678 struct redefine_node key_node
= {(char *) source
, NULL
};
1679 struct redefine_node
*redef_node
1680 = (struct redefine_node
*) htab_find (redefine_specific_htab
, &key_node
);
1682 return redef_node
== NULL
? source
: redef_node
->target
;
1685 /* Insert a node into symbol redefine hash tabel. */
1688 add_redefine_and_check (const char *cause
, const char *source
,
1691 struct redefine_node
*new_node
1692 = (struct redefine_node
*) xmalloc (sizeof (struct redefine_node
));
1694 new_node
->source
= strdup (source
);
1695 new_node
->target
= strdup (target
);
1697 if (htab_find (redefine_specific_htab
, new_node
) != HTAB_EMPTY_ENTRY
)
1698 fatal (_("%s: Multiple redefinition of symbol \"%s\""),
1701 if (htab_find (redefine_specific_reverse_htab
, target
) != HTAB_EMPTY_ENTRY
)
1702 fatal (_("%s: Symbol \"%s\" is target of more than one redefinition"),
1705 /* Insert the NEW_NODE into hash table for quick search. */
1706 add_specific_symbol_node (new_node
, redefine_specific_htab
);
1708 /* Insert the target string into the reverse hash table, this is needed for
1709 duplicated target string check. */
1710 add_specific_symbol (new_node
->target
, redefine_specific_reverse_htab
);
1714 /* Handle the --redefine-syms option. Read lines containing "old new"
1715 from the file, and add them to the symbol redefine list. */
1718 add_redefine_syms_file (const char *filename
)
1727 file
= fopen (filename
, "r");
1729 fatal (_("couldn't open symbol redefinition file %s (error: %s)"),
1730 filename
, strerror (errno
));
1733 buf
= (char *) xmalloc (bufsize
+ 1 /* For the terminating NUL. */);
1741 /* Collect the input symbol name. */
1742 while (! IS_WHITESPACE (c
) && ! IS_LINE_TERMINATOR (c
) && c
!= EOF
)
1750 buf
= (char *) xrealloc (buf
, bufsize
+ 1);
1758 /* Eat white space between the symbol names. */
1759 while (IS_WHITESPACE (c
))
1761 if (c
== '#' || IS_LINE_TERMINATOR (c
))
1766 /* Collect the output symbol name. */
1768 while (! IS_WHITESPACE (c
) && ! IS_LINE_TERMINATOR (c
) && c
!= EOF
)
1776 buf
= (char *) xrealloc (buf
, bufsize
+ 1);
1784 /* Eat white space at end of line. */
1785 while (! IS_LINE_TERMINATOR(c
) && c
!= EOF
&& IS_WHITESPACE (c
))
1790 if ((c
== '\r' && (c
= getc (file
)) == '\n')
1791 || c
== '\n' || c
== EOF
)
1794 /* Append the redefinition to the list. */
1796 add_redefine_and_check (filename
, &buf
[0], &buf
[outsym_off
]);
1807 fatal (_("%s:%d: garbage found at end of line"), filename
, lineno
);
1809 if (len
!= 0 && (outsym_off
== 0 || outsym_off
== len
))
1810 fatal (_("%s:%d: missing new symbol name"), filename
, lineno
);
1813 /* Eat the rest of the line and finish it. */
1814 while (c
!= '\n' && c
!= EOF
)
1820 fatal (_("%s:%d: premature end of file"), filename
, lineno
);
1826 /* Copy unknown object file IBFD onto OBFD.
1827 Returns TRUE upon success, FALSE otherwise. */
1830 copy_unknown_object (bfd
*ibfd
, bfd
*obfd
)
1838 if (bfd_stat_arch_elt (ibfd
, &buf
) != 0)
1840 bfd_nonfatal_message (NULL
, ibfd
, NULL
, NULL
);
1847 non_fatal (_("stat returns negative size for `%s'"),
1848 bfd_get_archive_filename (ibfd
));
1852 if (bfd_seek (ibfd
, (file_ptr
) 0, SEEK_SET
) != 0)
1854 bfd_nonfatal (bfd_get_archive_filename (ibfd
));
1859 printf (_("copy from `%s' [unknown] to `%s' [unknown]\n"),
1860 bfd_get_archive_filename (ibfd
), bfd_get_filename (obfd
));
1862 cbuf
= (char *) xmalloc (BUFSIZE
);
1864 while (ncopied
< size
)
1866 tocopy
= size
- ncopied
;
1867 if (tocopy
> BUFSIZE
)
1870 if (bfd_bread (cbuf
, (bfd_size_type
) tocopy
, ibfd
)
1871 != (bfd_size_type
) tocopy
)
1873 bfd_nonfatal_message (NULL
, ibfd
, NULL
, NULL
);
1878 if (bfd_bwrite (cbuf
, (bfd_size_type
) tocopy
, obfd
)
1879 != (bfd_size_type
) tocopy
)
1881 bfd_nonfatal_message (NULL
, obfd
, NULL
, NULL
);
1889 /* We should at least to be able to read it back when copying an
1890 unknown object in an archive. */
1891 chmod (bfd_get_filename (obfd
), buf
.st_mode
| S_IRUSR
);
1896 /* Returns the number of bytes needed to store VAL. */
1898 static inline unsigned int
1899 num_bytes (unsigned long val
)
1901 unsigned int count
= 0;
1903 /* FIXME: There must be a faster way to do this. */
1912 typedef struct objcopy_internal_note
1914 Elf_Internal_Note note
;
1917 bfd_boolean modified
;
1918 } objcopy_internal_note
;
1920 /* Returns TRUE if a gap does, or could, exist between the address range
1921 covered by PNOTE1 and PNOTE2. */
1924 gap_exists (objcopy_internal_note
* pnote1
,
1925 objcopy_internal_note
* pnote2
)
1927 /* Without range end notes, we assume that a gap might exist. */
1928 if (pnote1
->end
== 0 || pnote2
->end
== 0)
1931 /* FIXME: Alignment of 16 bytes taken from x86_64 binaries.
1932 Really we should extract the alignment of the section covered by the notes. */
1933 return BFD_ALIGN (pnote1
->end
, 16) < pnote2
->start
;
1937 is_open_note (objcopy_internal_note
* pnote
)
1939 return (pnote
->note
.type
== NT_GNU_BUILD_ATTRIBUTE_OPEN
);
1943 is_func_note (objcopy_internal_note
* pnote
)
1945 return (pnote
->note
.type
== NT_GNU_BUILD_ATTRIBUTE_FUNC
);
1949 is_64bit (bfd
* abfd
)
1951 /* Should never happen, but let's be paranoid. */
1952 if (bfd_get_flavour (abfd
) != bfd_target_elf_flavour
)
1955 return elf_elfheader (abfd
)->e_ident
[EI_CLASS
] == ELFCLASS64
;
1958 /* Merge the notes on SEC, removing redundant entries.
1959 Returns the new, smaller size of the section upon success. */
1961 static bfd_size_type
1962 merge_gnu_build_notes (bfd
* abfd
, asection
* sec
, bfd_size_type size
, bfd_byte
* contents
)
1964 objcopy_internal_note
* pnotes_end
;
1965 objcopy_internal_note
* pnotes
= NULL
;
1966 objcopy_internal_note
* pnote
;
1967 bfd_size_type remain
= size
;
1968 unsigned version_1_seen
= 0;
1969 unsigned version_2_seen
= 0;
1970 unsigned version_3_seen
= 0;
1971 bfd_boolean duplicate_found
= FALSE
;
1972 const char * err
= NULL
;
1973 bfd_byte
* in
= contents
;
1974 int attribute_type_byte
;
1976 unsigned long previous_func_start
= 0;
1977 unsigned long previous_open_start
= 0;
1978 unsigned long previous_func_end
= 0;
1979 unsigned long previous_open_end
= 0;
1983 relsize
= bfd_get_reloc_upper_bound (abfd
, sec
);
1989 /* If there are relocs associated with this section then we
1990 cannot safely merge it. */
1991 relpp
= (arelent
**) xmalloc (relsize
);
1992 relcount
= bfd_canonicalize_reloc (abfd
, sec
, relpp
, isympp
);
1998 /* Make a copy of the notes and convert to our internal format.
1999 Minimum size of a note is 12 bytes. */
2000 pnote
= pnotes
= (objcopy_internal_note
*) xcalloc ((size
/ 12), sizeof (* pnote
));
2001 while (remain
>= 12)
2005 pnote
->note
.namesz
= (bfd_get_32 (abfd
, in
) + 3) & ~3;
2006 pnote
->note
.descsz
= (bfd_get_32 (abfd
, in
+ 4) + 3) & ~3;
2007 pnote
->note
.type
= bfd_get_32 (abfd
, in
+ 8);
2009 if (pnote
->note
.type
!= NT_GNU_BUILD_ATTRIBUTE_OPEN
2010 && pnote
->note
.type
!= NT_GNU_BUILD_ATTRIBUTE_FUNC
)
2012 err
= _("corrupt GNU build attribute note: wrong note type");
2016 if (pnote
->note
.namesz
+ pnote
->note
.descsz
+ 12 > remain
)
2018 err
= _("corrupt GNU build attribute note: note too big");
2022 if (pnote
->note
.namesz
< 2)
2024 err
= _("corrupt GNU build attribute note: name too small");
2028 pnote
->note
.namedata
= (char *)(in
+ 12);
2029 pnote
->note
.descdata
= (char *)(in
+ 12 + pnote
->note
.namesz
);
2031 remain
-= 12 + pnote
->note
.namesz
+ pnote
->note
.descsz
;
2032 in
+= 12 + pnote
->note
.namesz
+ pnote
->note
.descsz
;
2034 if (pnote
->note
.namesz
> 2
2035 && pnote
->note
.namedata
[0] == '$'
2036 && pnote
->note
.namedata
[1] == GNU_BUILD_ATTRIBUTE_VERSION
2037 && pnote
->note
.namedata
[2] == '1')
2039 else if (pnote
->note
.namesz
> 4
2040 && pnote
->note
.namedata
[0] == 'G'
2041 && pnote
->note
.namedata
[1] == 'A'
2042 && pnote
->note
.namedata
[2] == '$'
2043 && pnote
->note
.namedata
[3] == GNU_BUILD_ATTRIBUTE_VERSION
)
2045 if (pnote
->note
.namedata
[4] == '2')
2047 else if (pnote
->note
.namedata
[4] == '3')
2051 err
= _("corrupt GNU build attribute note: unsupported version");
2056 switch (pnote
->note
.descsz
)
2063 start
= bfd_get_32 (abfd
, pnote
->note
.descdata
);
2064 /* FIXME: For version 1 and 2 notes we should try to
2065 calculate the end address by finding a symbol whose
2066 value is START, and then adding in its size.
2068 For now though, since v1 and v2 was not intended to
2069 handle gaps, we chose an artificially large end
2075 if (! is_64bit (abfd
))
2077 start
= bfd_get_32 (abfd
, pnote
->note
.descdata
);
2078 end
= bfd_get_32 (abfd
, pnote
->note
.descdata
+ 4);
2082 start
= bfd_get_64 (abfd
, pnote
->note
.descdata
);
2083 /* FIXME: For version 1 and 2 notes we should try to
2084 calculate the end address by finding a symbol whose
2085 value is START, and then adding in its size.
2087 For now though, since v1 and v2 was not intended to
2088 handle gaps, we chose an artificially large end
2095 start
= bfd_get_64 (abfd
, pnote
->note
.descdata
);
2096 end
= bfd_get_64 (abfd
, pnote
->note
.descdata
+ 8);
2100 err
= _("corrupt GNU build attribute note: bad description size");
2104 if (is_open_note (pnote
))
2107 previous_open_start
= start
;
2109 pnote
->start
= previous_open_start
;
2112 previous_open_end
= end
;
2114 pnote
->end
= previous_open_end
;
2119 previous_func_start
= start
;
2121 pnote
->start
= previous_func_start
;
2124 previous_func_end
= end
;
2126 pnote
->end
= previous_func_end
;
2129 if (pnote
->note
.namedata
[pnote
->note
.namesz
- 1] != 0)
2131 err
= _("corrupt GNU build attribute note: name not NUL terminated");
2140 /* Check that the notes are valid. */
2143 err
= _("corrupt GNU build attribute notes: excess data at end");
2147 if (version_1_seen
== 0 && version_2_seen
== 0 && version_3_seen
== 0)
2149 err
= _("bad GNU build attribute notes: no known versions detected");
2153 if ((version_1_seen
> 0 && version_2_seen
> 0)
2154 || (version_1_seen
> 0 && version_3_seen
> 0)
2155 || (version_2_seen
> 0 && version_3_seen
> 0))
2157 err
= _("bad GNU build attribute notes: multiple different versions");
2161 /* Merging is only needed if there is more than one version note... */
2162 if (version_1_seen
== 1 || version_2_seen
== 1 || version_3_seen
== 1)
2165 attribute_type_byte
= version_1_seen
? 1 : 3;
2166 val_start
= attribute_type_byte
+ 1;
2168 /* The first note should be the first version note. */
2169 if (pnotes
[0].note
.namedata
[attribute_type_byte
] != GNU_BUILD_ATTRIBUTE_VERSION
)
2171 err
= _("bad GNU build attribute notes: first note not version note");
2175 /* Now merge the notes. The rules are:
2176 1. Preserve the ordering of the notes.
2177 2. Preserve any NT_GNU_BUILD_ATTRIBUTE_FUNC notes.
2178 3. Eliminate any NT_GNU_BUILD_ATTRIBUTE_OPEN notes that have the same
2179 full name field as the immediately preceeding note with the same type
2180 of name and whose address ranges coincide.
2181 IE - if there are gaps in the coverage of the notes, then these gaps
2183 4. Combine the numeric value of any NT_GNU_BUILD_ATTRIBUTE_OPEN notes
2184 of type GNU_BUILD_ATTRIBUTE_STACK_SIZE.
2185 5. If an NT_GNU_BUILD_ATTRIBUTE_OPEN note is going to be preserved and
2186 its description field is empty then the nearest preceeding OPEN note
2187 with a non-empty description field must also be preserved *OR* the
2188 description field of the note must be changed to contain the starting
2189 address to which it refers.
2190 6. Notes with the same start and end address can be deleted. */
2191 for (pnote
= pnotes
+ 1; pnote
< pnotes_end
; pnote
++)
2194 objcopy_internal_note
* back
;
2195 objcopy_internal_note
* prev_open_with_range
= NULL
;
2197 /* Rule 6 - delete 0-range notes. */
2198 if (pnote
->start
== pnote
->end
)
2200 duplicate_found
= TRUE
;
2201 pnote
->note
.type
= 0;
2205 /* Rule 2 - preserve function notes. */
2206 if (! is_open_note (pnote
))
2210 /* Check to see if there is an identical previous function note.
2211 This can happen with overlays for example. */
2212 for (iter
= 0, back
= pnote
-1; back
>= pnotes
; back
--)
2214 if (back
->start
== pnote
->start
2215 && back
->end
== pnote
->end
2216 && back
->note
.namesz
== pnote
->note
.namesz
2217 && memcmp (back
->note
.namedata
, pnote
->note
.namedata
, pnote
->note
.namesz
) == 0)
2219 fprintf (stderr
, "DUP FUNXC\n");
2220 duplicate_found
= TRUE
;
2221 pnote
->note
.type
= 0;
2225 /* Don't scan too far back however. */
2232 note_type
= pnote
->note
.namedata
[attribute_type_byte
];
2234 /* Scan backwards from pnote, looking for duplicates.
2235 Clear the type field of any found - but do not delete them just yet. */
2236 for (back
= pnote
- 1; back
>= pnotes
; back
--)
2238 int back_type
= back
->note
.namedata
[attribute_type_byte
];
2240 /* If this is the first open note with an address
2241 range that we have encountered then record it. */
2242 if (prev_open_with_range
== NULL
2243 && back
->note
.descsz
> 0
2244 && ! is_func_note (back
))
2245 prev_open_with_range
= back
;
2247 if (! is_open_note (back
))
2250 /* If the two notes are different then keep on searching. */
2251 if (back_type
!= note_type
)
2254 /* Rule 4 - combine stack size notes. */
2255 if (back_type
== GNU_BUILD_ATTRIBUTE_STACK_SIZE
)
2257 unsigned char * name
;
2258 unsigned long note_val
;
2259 unsigned long back_val
;
2264 for (shift
= 0, note_val
= 0,
2265 bytes
= pnote
->note
.namesz
- val_start
,
2266 name
= (unsigned char *) pnote
->note
.namedata
+ val_start
;
2269 byte
= (* name
++) & 0xff;
2270 note_val
|= byte
<< shift
;
2274 for (shift
= 0, back_val
= 0,
2275 bytes
= back
->note
.namesz
- val_start
,
2276 name
= (unsigned char *) back
->note
.namedata
+ val_start
;
2279 byte
= (* name
++) & 0xff;
2280 back_val
|= byte
<< shift
;
2284 back_val
+= note_val
;
2285 if (num_bytes (back_val
) >= back
->note
.namesz
- val_start
)
2287 /* We have a problem - the new value requires more bytes of
2288 storage in the name field than are available. Currently
2289 we have no way of fixing this, so we just preserve both
2294 /* Write the new val into back. */
2295 name
= (unsigned char *) back
->note
.namedata
+ val_start
;
2296 while (name
< (unsigned char *) back
->note
.namedata
2297 + back
->note
.namesz
)
2299 byte
= back_val
& 0xff;
2306 duplicate_found
= TRUE
;
2307 pnote
->note
.type
= 0;
2311 /* Rule 3 - combine identical open notes. */
2312 if (back
->note
.namesz
== pnote
->note
.namesz
2313 && memcmp (back
->note
.namedata
,
2314 pnote
->note
.namedata
, back
->note
.namesz
) == 0
2315 && ! gap_exists (back
, pnote
))
2317 duplicate_found
= TRUE
;
2318 pnote
->note
.type
= 0;
2320 if (pnote
->end
> back
->end
)
2321 back
->end
= pnote
->end
;
2324 back
->modified
= TRUE
;
2328 /* Rule 5 - Since we are keeping this note we must check to see
2329 if its description refers back to an earlier OPEN version
2330 note that has been scheduled for deletion. If so then we
2331 must make sure that version note is also preserved. */
2334 /* As of version 3 we can just
2335 move the range into the note. */
2336 pnote
->modified
= TRUE
;
2337 pnote
->note
.type
= NT_GNU_BUILD_ATTRIBUTE_FUNC
;
2338 back
->modified
= TRUE
;
2339 back
->note
.type
= NT_GNU_BUILD_ATTRIBUTE_FUNC
;
2343 if (pnote
->note
.descsz
== 0
2344 && prev_open_with_range
!= NULL
2345 && prev_open_with_range
->note
.type
== 0)
2346 prev_open_with_range
->note
.type
= NT_GNU_BUILD_ATTRIBUTE_OPEN
;
2349 /* We have found a similar attribute but the details do not match.
2350 Stop searching backwards. */
2355 if (duplicate_found
)
2357 bfd_byte
* new_contents
;
2360 bfd_size_type new_size
;
2361 bfd_vma prev_start
= 0;
2362 bfd_vma prev_end
= 0;
2364 /* Eliminate the duplicates. */
2365 new = new_contents
= xmalloc (size
);
2366 for (pnote
= pnotes
, old
= contents
;
2370 bfd_size_type note_size
= 12 + pnote
->note
.namesz
+ pnote
->note
.descsz
;
2372 if (pnote
->note
.type
!= 0)
2374 if (pnote
->modified
)
2376 /* If the note has been modified then we must copy it by
2377 hand, potentially adding in a new description field. */
2378 if (pnote
->start
== prev_start
&& pnote
->end
== prev_end
)
2380 bfd_put_32 (abfd
, pnote
->note
.namesz
, new);
2381 bfd_put_32 (abfd
, 0, new + 4);
2382 bfd_put_32 (abfd
, pnote
->note
.type
, new + 8);
2384 memcpy (new, pnote
->note
.namedata
, pnote
->note
.namesz
);
2385 new += pnote
->note
.namesz
;
2389 bfd_put_32 (abfd
, pnote
->note
.namesz
, new);
2390 bfd_put_32 (abfd
, is_64bit (abfd
) ? 16 : 8, new + 4);
2391 bfd_put_32 (abfd
, pnote
->note
.type
, new + 8);
2393 memcpy (new, pnote
->note
.namedata
, pnote
->note
.namesz
);
2394 new += pnote
->note
.namesz
;
2395 if (is_64bit (abfd
))
2397 bfd_put_64 (abfd
, pnote
->start
, new);
2398 bfd_put_64 (abfd
, pnote
->end
, new + 8);
2403 bfd_put_32 (abfd
, pnote
->start
, new);
2404 bfd_put_32 (abfd
, pnote
->end
, new + 4);
2411 memcpy (new, old
, note_size
);
2414 prev_start
= pnote
->start
;
2415 prev_end
= pnote
->end
;
2421 new_size
= new - new_contents
;
2422 memcpy (contents
, new_contents
, new_size
);
2424 free (new_contents
);
2430 bfd_set_error (bfd_error_bad_value
);
2431 bfd_nonfatal_message (NULL
, abfd
, sec
, err
);
2439 /* Copy object file IBFD onto OBFD.
2440 Returns TRUE upon success, FALSE otherwise. */
2443 copy_object (bfd
*ibfd
, bfd
*obfd
, const bfd_arch_info_type
*input_arch
)
2447 asection
**osections
= NULL
;
2449 asection
*gnu_debuglink_section
= NULL
;
2450 bfd_size_type
*gaps
= NULL
;
2451 bfd_size_type max_gap
= 0;
2454 enum bfd_architecture iarch
;
2458 if (ibfd
->xvec
->byteorder
!= obfd
->xvec
->byteorder
2459 && ibfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
2460 && obfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
)
2462 /* PR 17636: Call non-fatal so that we return to our parent who
2463 may need to tidy temporary files. */
2464 non_fatal (_("Unable to change endianness of input file(s)"));
2468 if (!bfd_set_format (obfd
, bfd_get_format (ibfd
)))
2470 bfd_nonfatal_message (NULL
, obfd
, NULL
, NULL
);
2474 if (ibfd
->sections
== NULL
)
2476 non_fatal (_("error: the input file '%s' has no sections"),
2477 bfd_get_archive_filename (ibfd
));
2481 if (ibfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
2483 if ((do_debug_sections
& compress
) != 0
2484 && do_debug_sections
!= compress
)
2486 non_fatal (_("--compress-debug-sections=[zlib|zlib-gnu|zlib-gabi] is unsupported on `%s'"),
2487 bfd_get_archive_filename (ibfd
));
2491 if (do_elf_stt_common
)
2493 non_fatal (_("--elf-stt-common=[yes|no] is unsupported on `%s'"),
2494 bfd_get_archive_filename (ibfd
));
2500 printf (_("copy from `%s' [%s] to `%s' [%s]\n"),
2501 bfd_get_archive_filename (ibfd
), bfd_get_target (ibfd
),
2502 bfd_get_filename (obfd
), bfd_get_target (obfd
));
2511 start
= bfd_get_start_address (ibfd
);
2512 start
+= change_start
;
2515 /* Neither the start address nor the flags
2516 need to be set for a core file. */
2517 if (bfd_get_format (obfd
) != bfd_core
)
2521 flags
= bfd_get_file_flags (ibfd
);
2522 flags
|= bfd_flags_to_set
;
2523 flags
&= ~bfd_flags_to_clear
;
2524 flags
&= bfd_applicable_file_flags (obfd
);
2526 if (strip_symbols
== STRIP_ALL
)
2527 flags
&= ~HAS_RELOC
;
2529 if (!bfd_set_start_address (obfd
, start
)
2530 || !bfd_set_file_flags (obfd
, flags
))
2532 bfd_nonfatal_message (NULL
, ibfd
, NULL
, NULL
);
2537 /* Copy architecture of input file to output file. */
2538 iarch
= bfd_get_arch (ibfd
);
2539 imach
= bfd_get_mach (ibfd
);
2542 if (bfd_get_arch_info (ibfd
) == NULL
2543 || bfd_get_arch_info (ibfd
)->arch
== bfd_arch_unknown
)
2545 iarch
= input_arch
->arch
;
2546 imach
= input_arch
->mach
;
2549 non_fatal (_("Input file `%s' ignores binary architecture parameter."),
2550 bfd_get_archive_filename (ibfd
));
2552 if (!bfd_set_arch_mach (obfd
, iarch
, imach
)
2553 && (ibfd
->target_defaulted
2554 || bfd_get_arch (ibfd
) != bfd_get_arch (obfd
)))
2556 if (bfd_get_arch (ibfd
) == bfd_arch_unknown
)
2557 non_fatal (_("Unable to recognise the format of the input file `%s'"),
2558 bfd_get_archive_filename (ibfd
));
2560 non_fatal (_("Output file cannot represent architecture `%s'"),
2561 bfd_printable_arch_mach (bfd_get_arch (ibfd
),
2562 bfd_get_mach (ibfd
)));
2566 if (!bfd_set_format (obfd
, bfd_get_format (ibfd
)))
2568 bfd_nonfatal_message (NULL
, ibfd
, NULL
, NULL
);
2572 if (bfd_get_flavour (obfd
) == bfd_target_coff_flavour
2573 && bfd_pei_p (obfd
))
2575 /* Set up PE parameters. */
2576 pe_data_type
*pe
= pe_data (obfd
);
2578 /* Copy PE parameters before changing them. */
2579 if (ibfd
->xvec
->flavour
== bfd_target_coff_flavour
2580 && bfd_pei_p (ibfd
))
2581 pe
->pe_opthdr
= pe_data (ibfd
)->pe_opthdr
;
2583 if (pe_file_alignment
!= (bfd_vma
) -1)
2584 pe
->pe_opthdr
.FileAlignment
= pe_file_alignment
;
2586 pe_file_alignment
= PE_DEF_FILE_ALIGNMENT
;
2588 if (pe_heap_commit
!= (bfd_vma
) -1)
2589 pe
->pe_opthdr
.SizeOfHeapCommit
= pe_heap_commit
;
2591 if (pe_heap_reserve
!= (bfd_vma
) -1)
2592 pe
->pe_opthdr
.SizeOfHeapCommit
= pe_heap_reserve
;
2594 if (pe_image_base
!= (bfd_vma
) -1)
2595 pe
->pe_opthdr
.ImageBase
= pe_image_base
;
2597 if (pe_section_alignment
!= (bfd_vma
) -1)
2598 pe
->pe_opthdr
.SectionAlignment
= pe_section_alignment
;
2600 pe_section_alignment
= PE_DEF_SECTION_ALIGNMENT
;
2602 if (pe_stack_commit
!= (bfd_vma
) -1)
2603 pe
->pe_opthdr
.SizeOfStackCommit
= pe_stack_commit
;
2605 if (pe_stack_reserve
!= (bfd_vma
) -1)
2606 pe
->pe_opthdr
.SizeOfStackCommit
= pe_stack_reserve
;
2608 if (pe_subsystem
!= -1)
2609 pe
->pe_opthdr
.Subsystem
= pe_subsystem
;
2611 if (pe_major_subsystem_version
!= -1)
2612 pe
->pe_opthdr
.MajorSubsystemVersion
= pe_major_subsystem_version
;
2614 if (pe_minor_subsystem_version
!= -1)
2615 pe
->pe_opthdr
.MinorSubsystemVersion
= pe_minor_subsystem_version
;
2617 if (pe_file_alignment
> pe_section_alignment
)
2619 char file_alignment
[20], section_alignment
[20];
2621 sprintf_vma (file_alignment
, pe_file_alignment
);
2622 sprintf_vma (section_alignment
, pe_section_alignment
);
2623 non_fatal (_("warning: file alignment (0x%s) > section alignment (0x%s)"),
2625 file_alignment
, section_alignment
);
2632 if (osympp
!= isympp
)
2638 symsize
= bfd_get_symtab_upper_bound (ibfd
);
2641 bfd_nonfatal_message (NULL
, ibfd
, NULL
, NULL
);
2645 osympp
= isympp
= (asymbol
**) xmalloc (symsize
);
2646 symcount
= bfd_canonicalize_symtab (ibfd
, isympp
);
2649 bfd_nonfatal_message (NULL
, ibfd
, NULL
, NULL
);
2652 /* PR 17512: file: d6323821
2653 If the symbol table could not be loaded do not pretend that we have
2654 any symbols. This trips us up later on when we load the relocs. */
2658 osympp
= isympp
= NULL
;
2661 /* BFD mandates that all output sections be created and sizes set before
2662 any output is done. Thus, we traverse all sections multiple times. */
2663 bfd_map_over_sections (ibfd
, setup_section
, obfd
);
2665 if (!extract_symbol
)
2666 setup_bfd_headers (ibfd
, obfd
);
2668 if (add_sections
!= NULL
)
2670 struct section_add
*padd
;
2671 struct section_list
*pset
;
2673 for (padd
= add_sections
; padd
!= NULL
; padd
= padd
->next
)
2677 pset
= find_section_list (padd
->name
, FALSE
,
2678 SECTION_CONTEXT_SET_FLAGS
);
2680 flags
= pset
->flags
| SEC_HAS_CONTENTS
;
2682 flags
= SEC_HAS_CONTENTS
| SEC_READONLY
| SEC_DATA
;
2684 /* bfd_make_section_with_flags() does not return very helpful
2685 error codes, so check for the most likely user error first. */
2686 if (bfd_get_section_by_name (obfd
, padd
->name
))
2688 bfd_nonfatal_message (NULL
, obfd
, NULL
,
2689 _("can't add section '%s'"), padd
->name
);
2694 /* We use LINKER_CREATED here so that the backend hooks
2695 will create any special section type information,
2696 instead of presuming we know what we're doing merely
2697 because we set the flags. */
2698 padd
->section
= bfd_make_section_with_flags
2699 (obfd
, padd
->name
, flags
| SEC_LINKER_CREATED
);
2700 if (padd
->section
== NULL
)
2702 bfd_nonfatal_message (NULL
, obfd
, NULL
,
2703 _("can't create section `%s'"),
2709 if (! bfd_set_section_size (obfd
, padd
->section
, padd
->size
))
2711 bfd_nonfatal_message (NULL
, obfd
, padd
->section
, NULL
);
2715 pset
= find_section_list (padd
->name
, FALSE
,
2716 SECTION_CONTEXT_SET_VMA
| SECTION_CONTEXT_ALTER_VMA
);
2718 && ! bfd_set_section_vma (obfd
, padd
->section
, pset
->vma_val
))
2720 bfd_nonfatal_message (NULL
, obfd
, padd
->section
, NULL
);
2724 pset
= find_section_list (padd
->name
, FALSE
,
2725 SECTION_CONTEXT_SET_LMA
| SECTION_CONTEXT_ALTER_LMA
);
2728 padd
->section
->lma
= pset
->lma_val
;
2730 if (! bfd_set_section_alignment
2731 (obfd
, padd
->section
,
2732 bfd_section_alignment (obfd
, padd
->section
)))
2734 bfd_nonfatal_message (NULL
, obfd
, padd
->section
, NULL
);
2741 if (update_sections
!= NULL
)
2743 struct section_add
*pupdate
;
2745 for (pupdate
= update_sections
;
2747 pupdate
= pupdate
->next
)
2749 pupdate
->section
= bfd_get_section_by_name (ibfd
, pupdate
->name
);
2750 if (pupdate
->section
== NULL
)
2752 non_fatal (_("error: %s not found, can't be updated"), pupdate
->name
);
2756 osec
= pupdate
->section
->output_section
;
2757 if (! bfd_set_section_size (obfd
, osec
, pupdate
->size
))
2759 bfd_nonfatal_message (NULL
, obfd
, osec
, NULL
);
2767 /* This palaver is necessary because we must set the output
2768 section size first, before its contents are ready. */
2769 osec
= bfd_get_section_by_name (ibfd
, GNU_BUILD_ATTRS_SECTION_NAME
);
2770 if (osec
&& is_merged_note_section (ibfd
, osec
))
2774 size
= bfd_get_section_size (osec
);
2777 bfd_nonfatal_message (NULL
, ibfd
, osec
, _("warning: note section is empty"));
2778 merge_notes
= FALSE
;
2780 else if (! bfd_get_full_section_contents (ibfd
, osec
, & merged_notes
))
2782 bfd_nonfatal_message (NULL
, ibfd
, osec
, _("warning: could not load note section"));
2783 free (merged_notes
);
2784 merged_notes
= NULL
;
2785 merge_notes
= FALSE
;
2789 merged_size
= merge_gnu_build_notes (ibfd
, osec
, size
, merged_notes
);
2790 if (merged_size
== size
)
2792 /* Merging achieves nothing. */
2793 free (merged_notes
);
2794 merged_notes
= NULL
;
2795 merge_notes
= FALSE
;
2800 if (osec
->output_section
== NULL
2801 || ! bfd_set_section_size (obfd
, osec
->output_section
, merged_size
))
2803 bfd_nonfatal_message (NULL
, obfd
, osec
, _("warning: failed to set merged notes size"));
2804 free (merged_notes
);
2805 merged_notes
= NULL
;
2806 merge_notes
= FALSE
;
2814 if (dump_sections
!= NULL
)
2816 struct section_add
* pdump
;
2818 for (pdump
= dump_sections
; pdump
!= NULL
; pdump
= pdump
->next
)
2820 osec
= bfd_get_section_by_name (ibfd
, pdump
->name
);
2823 bfd_nonfatal_message (NULL
, ibfd
, NULL
,
2824 _("can't dump section '%s' - it does not exist"),
2829 if ((bfd_get_section_flags (ibfd
, osec
) & SEC_HAS_CONTENTS
) == 0)
2831 bfd_nonfatal_message (NULL
, ibfd
, osec
,
2832 _("can't dump section - it has no contents"));
2836 bfd_size_type size
= bfd_get_section_size (osec
);
2839 bfd_nonfatal_message (NULL
, ibfd
, osec
,
2840 _("can't dump section - it is empty"));
2845 f
= fopen (pdump
->filename
, FOPEN_WB
);
2848 bfd_nonfatal_message (pdump
->filename
, NULL
, NULL
,
2849 _("could not open section dump file"));
2854 if (bfd_malloc_and_get_section (ibfd
, osec
, &contents
))
2856 if (fwrite (contents
, 1, size
, f
) != size
)
2858 non_fatal (_("error writing section contents to %s (error: %s)"),
2867 bfd_nonfatal_message (NULL
, ibfd
, osec
,
2868 _("could not retrieve section contents"));
2875 if (gnu_debuglink_filename
!= NULL
)
2877 /* PR 15125: Give a helpful warning message if
2878 the debuglink section already exists, and
2879 allow the rest of the copy to complete. */
2880 if (bfd_get_section_by_name (obfd
, ".gnu_debuglink"))
2882 non_fatal (_("%s: debuglink section already exists"),
2883 bfd_get_filename (obfd
));
2884 gnu_debuglink_filename
= NULL
;
2888 gnu_debuglink_section
= bfd_create_gnu_debuglink_section
2889 (obfd
, gnu_debuglink_filename
);
2891 if (gnu_debuglink_section
== NULL
)
2893 bfd_nonfatal_message (NULL
, obfd
, NULL
,
2894 _("cannot create debug link section `%s'"),
2895 gnu_debuglink_filename
);
2899 /* Special processing for PE format files. We
2900 have no way to distinguish PE from COFF here. */
2901 if (bfd_get_flavour (obfd
) == bfd_target_coff_flavour
)
2903 bfd_vma debuglink_vma
;
2904 asection
* highest_section
;
2906 /* The PE spec requires that all sections be adjacent and sorted
2907 in ascending order of VMA. It also specifies that debug
2908 sections should be last. This is despite the fact that debug
2909 sections are not loaded into memory and so in theory have no
2912 This means that the debuglink section must be given a non-zero
2913 VMA which makes it contiguous with other debug sections. So
2914 walk the current section list, find the section with the
2915 highest VMA and start the debuglink section after that one. */
2916 for (osec
= obfd
->sections
, highest_section
= NULL
;
2920 && (highest_section
== NULL
2921 || osec
->vma
> highest_section
->vma
))
2922 highest_section
= osec
;
2924 if (highest_section
)
2925 debuglink_vma
= BFD_ALIGN (highest_section
->vma
2926 + highest_section
->size
,
2927 /* FIXME: We ought to be using
2928 COFF_PAGE_SIZE here or maybe
2929 bfd_get_section_alignment() (if it
2930 was set) but since this is for PE
2931 and we know the required alignment
2932 it is easier just to hard code it. */
2935 /* Umm, not sure what to do in this case. */
2936 debuglink_vma
= 0x1000;
2938 bfd_set_section_vma (obfd
, gnu_debuglink_section
, debuglink_vma
);
2943 c
= bfd_count_sections (obfd
);
2945 && (gap_fill_set
|| pad_to_set
))
2949 /* We must fill in gaps between the sections and/or we must pad
2950 the last section to a specified address. We do this by
2951 grabbing a list of the sections, sorting them by VMA, and
2952 increasing the section sizes as required to fill the gaps.
2953 We write out the gap contents below. */
2955 osections
= (asection
**) xmalloc (c
* sizeof (asection
*));
2957 bfd_map_over_sections (obfd
, get_sections
, &set
);
2959 qsort (osections
, c
, sizeof (asection
*), compare_section_lma
);
2961 gaps
= (bfd_size_type
*) xmalloc (c
* sizeof (bfd_size_type
));
2962 memset (gaps
, 0, c
* sizeof (bfd_size_type
));
2966 for (i
= 0; i
< c
- 1; i
++)
2970 bfd_vma gap_start
, gap_stop
;
2972 flags
= bfd_get_section_flags (obfd
, osections
[i
]);
2973 if ((flags
& SEC_HAS_CONTENTS
) == 0
2974 || (flags
& SEC_LOAD
) == 0)
2977 size
= bfd_section_size (obfd
, osections
[i
]);
2978 gap_start
= bfd_section_lma (obfd
, osections
[i
]) + size
;
2979 gap_stop
= bfd_section_lma (obfd
, osections
[i
+ 1]);
2980 if (gap_start
< gap_stop
)
2982 if (! bfd_set_section_size (obfd
, osections
[i
],
2983 size
+ (gap_stop
- gap_start
)))
2985 bfd_nonfatal_message (NULL
, obfd
, osections
[i
],
2986 _("Can't fill gap after section"));
2990 gaps
[i
] = gap_stop
- gap_start
;
2991 if (max_gap
< gap_stop
- gap_start
)
2992 max_gap
= gap_stop
- gap_start
;
3002 lma
= bfd_section_lma (obfd
, osections
[c
- 1]);
3003 size
= bfd_section_size (obfd
, osections
[c
- 1]);
3004 if (lma
+ size
< pad_to
)
3006 if (! bfd_set_section_size (obfd
, osections
[c
- 1],
3009 bfd_nonfatal_message (NULL
, obfd
, osections
[c
- 1],
3010 _("can't add padding"));
3015 gaps
[c
- 1] = pad_to
- (lma
+ size
);
3016 if (max_gap
< pad_to
- (lma
+ size
))
3017 max_gap
= pad_to
- (lma
+ size
);
3023 /* Symbol filtering must happen after the output sections
3024 have been created, but before their contents are set. */
3026 if (convert_debugging
)
3027 dhandle
= read_debugging_info (ibfd
, isympp
, symcount
, FALSE
);
3029 if (strip_symbols
== STRIP_DEBUG
3030 || strip_symbols
== STRIP_ALL
3031 || strip_symbols
== STRIP_UNNEEDED
3032 || strip_symbols
== STRIP_NONDEBUG
3033 || strip_symbols
== STRIP_DWO
3034 || strip_symbols
== STRIP_NONDWO
3035 || discard_locals
!= LOCALS_UNDEF
3037 || htab_elements (strip_specific_htab
) != 0
3038 || htab_elements (keep_specific_htab
) != 0
3039 || htab_elements (localize_specific_htab
) != 0
3040 || htab_elements (globalize_specific_htab
) != 0
3041 || htab_elements (keepglobal_specific_htab
) != 0
3042 || htab_elements (weaken_specific_htab
) != 0
3043 || htab_elements (redefine_specific_htab
) != 0
3044 || prefix_symbols_string
3047 || convert_debugging
3048 || change_leading_char
3049 || remove_leading_char
3050 || section_rename_list
3054 /* Mark symbols used in output relocations so that they
3055 are kept, even if they are local labels or static symbols.
3057 Note we iterate over the input sections examining their
3058 relocations since the relocations for the output sections
3059 haven't been set yet. mark_symbols_used_in_relocations will
3060 ignore input sections which have no corresponding output
3062 if (strip_symbols
!= STRIP_ALL
)
3064 bfd_set_error (bfd_error_no_error
);
3065 bfd_map_over_sections (ibfd
,
3066 mark_symbols_used_in_relocations
,
3068 if (bfd_get_error () != bfd_error_no_error
)
3075 osympp
= (asymbol
**) xmalloc ((symcount
+ add_symbols
+ 1) * sizeof (asymbol
*));
3076 symcount
= filter_symbols (ibfd
, obfd
, osympp
, isympp
, symcount
);
3079 if (convert_debugging
&& dhandle
!= NULL
)
3081 if (! write_debugging_info (obfd
, dhandle
, &symcount
, &osympp
))
3088 bfd_set_symtab (obfd
, osympp
, symcount
);
3090 /* This has to happen before section positions are set. */
3091 bfd_map_over_sections (ibfd
, copy_relocations_in_section
, obfd
);
3093 /* This has to happen after the symbol table has been set. */
3094 bfd_map_over_sections (ibfd
, copy_section
, obfd
);
3096 if (add_sections
!= NULL
)
3098 struct section_add
*padd
;
3100 for (padd
= add_sections
; padd
!= NULL
; padd
= padd
->next
)
3102 if (! bfd_set_section_contents (obfd
, padd
->section
, padd
->contents
,
3105 bfd_nonfatal_message (NULL
, obfd
, padd
->section
, NULL
);
3111 if (update_sections
!= NULL
)
3113 struct section_add
*pupdate
;
3115 for (pupdate
= update_sections
;
3117 pupdate
= pupdate
->next
)
3119 osec
= pupdate
->section
->output_section
;
3120 if (! bfd_set_section_contents (obfd
, osec
, pupdate
->contents
,
3123 bfd_nonfatal_message (NULL
, obfd
, osec
, NULL
);
3131 osec
= bfd_get_section_by_name (obfd
, GNU_BUILD_ATTRS_SECTION_NAME
);
3132 if (osec
&& is_merged_note_section (obfd
, osec
))
3134 if (! bfd_set_section_contents (obfd
, osec
, merged_notes
, 0, merged_size
))
3136 bfd_nonfatal_message (NULL
, obfd
, osec
, _("error: failed to copy merged notes into output"));
3140 else if (! is_strip
)
3141 bfd_nonfatal_message (NULL
, obfd
, osec
, _("could not find any mergeable note sections"));
3142 free (merged_notes
);
3143 merged_notes
= NULL
;
3144 merge_notes
= FALSE
;
3147 if (gnu_debuglink_filename
!= NULL
)
3149 if (! bfd_fill_in_gnu_debuglink_section
3150 (obfd
, gnu_debuglink_section
, gnu_debuglink_filename
))
3152 bfd_nonfatal_message (NULL
, obfd
, NULL
,
3153 _("cannot fill debug link section `%s'"),
3154 gnu_debuglink_filename
);
3159 if (gap_fill_set
|| pad_to_set
)
3163 /* Fill in the gaps. */
3166 buf
= (bfd_byte
*) xmalloc (max_gap
);
3167 memset (buf
, gap_fill
, max_gap
);
3169 c
= bfd_count_sections (obfd
);
3170 for (i
= 0; i
< c
; i
++)
3178 off
= bfd_section_size (obfd
, osections
[i
]) - left
;
3189 if (! bfd_set_section_contents (obfd
, osections
[i
], buf
,
3192 bfd_nonfatal_message (NULL
, obfd
, osections
[i
], NULL
);
3208 /* Allow the BFD backend to copy any private data it understands
3209 from the input BFD to the output BFD. This is done last to
3210 permit the routine to look at the filtered symbol table, which is
3211 important for the ECOFF code at least. */
3212 if (! bfd_copy_private_bfd_data (ibfd
, obfd
))
3214 bfd_nonfatal_message (NULL
, obfd
, NULL
,
3215 _("error copying private BFD data"));
3219 /* Switch to the alternate machine code. We have to do this at the
3220 very end, because we only initialize the header when we create
3221 the first section. */
3222 if (use_alt_mach_code
!= 0)
3224 if (! bfd_alt_mach_code (obfd
, use_alt_mach_code
))
3226 non_fatal (_("this target does not support %lu alternative machine codes"),
3228 if (bfd_get_flavour (obfd
) == bfd_target_elf_flavour
)
3230 non_fatal (_("treating that number as an absolute e_machine value instead"));
3231 elf_elfheader (obfd
)->e_machine
= use_alt_mach_code
;
3234 non_fatal (_("ignoring the alternative value"));
3241 /* Read each archive element in turn from IBFD, copy the
3242 contents to temp file, and keep the temp file handle.
3243 If 'force_output_target' is TRUE then make sure that
3244 all elements in the new archive are of the type
3248 copy_archive (bfd
*ibfd
, bfd
*obfd
, const char *output_target
,
3249 bfd_boolean force_output_target
,
3250 const bfd_arch_info_type
*input_arch
)
3254 struct name_list
*next
;
3258 bfd
**ptr
= &obfd
->archive_head
;
3261 const char *filename
;
3263 /* Make a temp directory to hold the contents. */
3264 dir
= make_tempdir (bfd_get_filename (obfd
));
3266 fatal (_("cannot create tempdir for archive copying (error: %s)"),
3269 if (strip_symbols
== STRIP_ALL
)
3270 obfd
->has_armap
= FALSE
;
3272 obfd
->has_armap
= ibfd
->has_armap
;
3273 obfd
->is_thin_archive
= ibfd
->is_thin_archive
;
3276 obfd
->flags
|= BFD_DETERMINISTIC_OUTPUT
;
3280 this_element
= bfd_openr_next_archived_file (ibfd
, NULL
);
3282 if (!bfd_set_format (obfd
, bfd_get_format (ibfd
)))
3285 bfd_nonfatal_message (NULL
, obfd
, NULL
, NULL
);
3286 goto cleanup_and_exit
;
3289 while (!status
&& this_element
!= NULL
)
3295 int stat_status
= 0;
3296 bfd_boolean del
= TRUE
;
3297 bfd_boolean ok_object
;
3299 /* PR binutils/17533: Do not allow directory traversal
3300 outside of the current directory tree by archive members. */
3301 if (! is_valid_archive_path (bfd_get_filename (this_element
)))
3303 non_fatal (_("illegal pathname found in archive member: %s"),
3304 bfd_get_filename (this_element
));
3306 goto cleanup_and_exit
;
3309 /* Create an output file for this member. */
3310 output_name
= concat (dir
, "/",
3311 bfd_get_filename (this_element
), (char *) 0);
3313 /* If the file already exists, make another temp dir. */
3314 if (stat (output_name
, &buf
) >= 0)
3316 char * tmpdir
= make_tempdir (output_name
);
3321 non_fatal (_("cannot create tempdir for archive copying (error: %s)"),
3324 goto cleanup_and_exit
;
3327 l
= (struct name_list
*) xmalloc (sizeof (struct name_list
));
3332 output_name
= concat (tmpdir
, "/",
3333 bfd_get_filename (this_element
), (char *) 0);
3338 stat_status
= bfd_stat_arch_elt (this_element
, &buf
);
3340 if (stat_status
!= 0)
3341 non_fatal (_("internal stat error on %s"),
3342 bfd_get_filename (this_element
));
3345 l
= (struct name_list
*) xmalloc (sizeof (struct name_list
));
3346 l
->name
= output_name
;
3351 ok_object
= bfd_check_format (this_element
, bfd_object
);
3353 bfd_nonfatal_message (NULL
, this_element
, NULL
,
3354 _("Unable to recognise the format of file"));
3356 /* PR binutils/3110: Cope with archives
3357 containing multiple target types. */
3358 if (force_output_target
|| !ok_object
)
3359 output_bfd
= bfd_openw (output_name
, output_target
);
3361 output_bfd
= bfd_openw (output_name
, bfd_get_target (this_element
));
3363 if (output_bfd
== NULL
)
3365 bfd_nonfatal_message (output_name
, NULL
, NULL
, NULL
);
3367 goto cleanup_and_exit
;
3372 del
= !copy_object (this_element
, output_bfd
, input_arch
);
3374 if (del
&& bfd_get_arch (this_element
) == bfd_arch_unknown
)
3375 /* Try again as an unknown object file. */
3377 else if (!bfd_close (output_bfd
))
3379 bfd_nonfatal_message (output_name
, NULL
, NULL
, NULL
);
3380 /* Error in new object file. Don't change archive. */
3387 del
= !copy_unknown_object (this_element
, output_bfd
);
3388 if (!bfd_close_all_done (output_bfd
))
3390 bfd_nonfatal_message (output_name
, NULL
, NULL
, NULL
);
3391 /* Error in new object file. Don't change archive. */
3398 unlink (output_name
);
3403 if (preserve_dates
&& stat_status
== 0)
3404 set_times (output_name
, &buf
);
3406 /* Open the newly output file and attach to our list. */
3407 output_bfd
= bfd_openr (output_name
, output_target
);
3409 l
->obfd
= output_bfd
;
3412 ptr
= &output_bfd
->archive_next
;
3414 last_element
= this_element
;
3416 this_element
= bfd_openr_next_archived_file (ibfd
, last_element
);
3418 bfd_close (last_element
);
3423 filename
= bfd_get_filename (obfd
);
3424 if (!bfd_close (obfd
))
3427 bfd_nonfatal_message (filename
, NULL
, NULL
, NULL
);
3430 filename
= bfd_get_filename (ibfd
);
3431 if (!bfd_close (ibfd
))
3434 bfd_nonfatal_message (filename
, NULL
, NULL
, NULL
);
3438 /* Delete all the files that we opened. */
3440 struct name_list
* next
;
3442 for (l
= list
; l
!= NULL
; l
= next
)
3444 if (l
->obfd
== NULL
)
3448 bfd_close (l
->obfd
);
3460 set_long_section_mode (bfd
*output_bfd
, bfd
*input_bfd
, enum long_section_name_handling style
)
3462 /* This is only relevant to Coff targets. */
3463 if (bfd_get_flavour (output_bfd
) == bfd_target_coff_flavour
)
3466 && bfd_get_flavour (input_bfd
) == bfd_target_coff_flavour
)
3467 style
= bfd_coff_long_section_names (input_bfd
) ? ENABLE
: DISABLE
;
3468 bfd_coff_set_long_section_names (output_bfd
, style
!= DISABLE
);
3472 /* The top-level control. */
3475 copy_file (const char *input_filename
, const char *output_filename
,
3476 const char *input_target
, const char *output_target
,
3477 const bfd_arch_info_type
*input_arch
)
3480 char **obj_matching
;
3481 char **core_matching
;
3482 off_t size
= get_file_size (input_filename
);
3487 non_fatal (_("error: the input file '%s' is empty"),
3493 /* To allow us to do "strip *" without dying on the first
3494 non-object file, failures are nonfatal. */
3495 ibfd
= bfd_openr (input_filename
, input_target
);
3498 bfd_nonfatal_message (input_filename
, NULL
, NULL
, NULL
);
3503 switch (do_debug_sections
)
3507 case compress_gnu_zlib
:
3508 case compress_gabi_zlib
:
3509 ibfd
->flags
|= BFD_COMPRESS
;
3510 /* Don't check if input is ELF here since this information is
3511 only available after bfd_check_format_matches is called. */
3512 if (do_debug_sections
!= compress_gnu_zlib
)
3513 ibfd
->flags
|= BFD_COMPRESS_GABI
;
3516 ibfd
->flags
|= BFD_DECOMPRESS
;
3522 switch (do_elf_stt_common
)
3524 case elf_stt_common
:
3525 ibfd
->flags
|= BFD_CONVERT_ELF_COMMON
| BFD_USE_ELF_STT_COMMON
;
3528 case no_elf_stt_common
:
3529 ibfd
->flags
|= BFD_CONVERT_ELF_COMMON
;
3535 if (bfd_check_format (ibfd
, bfd_archive
))
3537 bfd_boolean force_output_target
;
3540 /* bfd_get_target does not return the correct value until
3541 bfd_check_format succeeds. */
3542 if (output_target
== NULL
)
3544 output_target
= bfd_get_target (ibfd
);
3545 force_output_target
= FALSE
;
3548 force_output_target
= TRUE
;
3550 obfd
= bfd_openw (output_filename
, output_target
);
3553 bfd_nonfatal_message (output_filename
, NULL
, NULL
, NULL
);
3557 /* This is a no-op on non-Coff targets. */
3558 set_long_section_mode (obfd
, ibfd
, long_section_names
);
3560 copy_archive (ibfd
, obfd
, output_target
, force_output_target
, input_arch
);
3562 else if (bfd_check_format_matches (ibfd
, bfd_object
, &obj_matching
))
3567 /* bfd_get_target does not return the correct value until
3568 bfd_check_format succeeds. */
3569 if (output_target
== NULL
)
3570 output_target
= bfd_get_target (ibfd
);
3572 obfd
= bfd_openw (output_filename
, output_target
);
3575 bfd_nonfatal_message (output_filename
, NULL
, NULL
, NULL
);
3579 /* This is a no-op on non-Coff targets. */
3580 set_long_section_mode (obfd
, ibfd
, long_section_names
);
3582 if (! copy_object (ibfd
, obfd
, input_arch
))
3585 /* PR 17512: file: 0f15796a.
3586 If the file could not be copied it may not be in a writeable
3587 state. So use bfd_close_all_done to avoid the possibility of
3588 writing uninitialised data into the file. */
3589 if (! (status
? bfd_close_all_done (obfd
) : bfd_close (obfd
)))
3592 bfd_nonfatal_message (output_filename
, NULL
, NULL
, NULL
);
3596 if (!bfd_close (ibfd
))
3599 bfd_nonfatal_message (input_filename
, NULL
, NULL
, NULL
);
3605 bfd_error_type obj_error
= bfd_get_error ();
3606 bfd_error_type core_error
;
3608 if (bfd_check_format_matches (ibfd
, bfd_core
, &core_matching
))
3610 /* This probably can't happen.. */
3611 if (obj_error
== bfd_error_file_ambiguously_recognized
)
3612 free (obj_matching
);
3616 core_error
= bfd_get_error ();
3617 /* Report the object error in preference to the core error. */
3618 if (obj_error
!= core_error
)
3619 bfd_set_error (obj_error
);
3621 bfd_nonfatal_message (input_filename
, NULL
, NULL
, NULL
);
3623 if (obj_error
== bfd_error_file_ambiguously_recognized
)
3625 list_matching_formats (obj_matching
);
3626 free (obj_matching
);
3628 if (core_error
== bfd_error_file_ambiguously_recognized
)
3630 list_matching_formats (core_matching
);
3631 free (core_matching
);
3638 /* Add a name to the section renaming list. */
3641 add_section_rename (const char * old_name
, const char * new_name
,
3644 section_rename
* srename
;
3646 /* Check for conflicts first. */
3647 for (srename
= section_rename_list
; srename
!= NULL
; srename
= srename
->next
)
3648 if (strcmp (srename
->old_name
, old_name
) == 0)
3650 /* Silently ignore duplicate definitions. */
3651 if (strcmp (srename
->new_name
, new_name
) == 0
3652 && srename
->flags
== flags
)
3655 fatal (_("Multiple renames of section %s"), old_name
);
3658 srename
= (section_rename
*) xmalloc (sizeof (* srename
));
3660 srename
->old_name
= old_name
;
3661 srename
->new_name
= new_name
;
3662 srename
->flags
= flags
;
3663 srename
->next
= section_rename_list
;
3665 section_rename_list
= srename
;
3668 /* Check the section rename list for a new name of the input section
3669 called OLD_NAME. Returns the new name if one is found and sets
3670 RETURNED_FLAGS if non-NULL to the flags to be used for this section. */
3673 find_section_rename (const char *old_name
, flagword
*returned_flags
)
3675 const section_rename
*srename
;
3677 for (srename
= section_rename_list
; srename
!= NULL
; srename
= srename
->next
)
3678 if (strcmp (srename
->old_name
, old_name
) == 0)
3680 if (returned_flags
!= NULL
&& srename
->flags
!= (flagword
) -1)
3681 *returned_flags
= srename
->flags
;
3683 return srename
->new_name
;
3689 /* Once each of the sections is copied, we may still need to do some
3690 finalization work for private section headers. Do that here. */
3693 setup_bfd_headers (bfd
*ibfd
, bfd
*obfd
)
3695 /* Allow the BFD backend to copy any private data it understands
3696 from the input section to the output section. */
3697 if (! bfd_copy_private_header_data (ibfd
, obfd
))
3700 bfd_nonfatal_message (NULL
, ibfd
, NULL
,
3701 _("error in private header data"));
3705 /* All went well. */
3709 /* Create a section in OBFD with the same
3710 name and attributes as ISECTION in IBFD. */
3713 setup_section (bfd
*ibfd
, sec_ptr isection
, void *obfdarg
)
3715 bfd
*obfd
= (bfd
*) obfdarg
;
3716 struct section_list
*p
;
3724 char *prefix
= NULL
;
3725 bfd_boolean make_nobits
;
3727 if (is_strip_section (ibfd
, isection
))
3730 /* Get the, possibly new, name of the output section. */
3731 name
= bfd_section_name (ibfd
, isection
);
3732 flags
= bfd_get_section_flags (ibfd
, isection
);
3733 name
= find_section_rename (name
, &flags
);
3735 /* Prefix sections. */
3736 if ((prefix_alloc_sections_string
)
3737 && (bfd_get_section_flags (ibfd
, isection
) & SEC_ALLOC
))
3738 prefix
= prefix_alloc_sections_string
;
3739 else if (prefix_sections_string
)
3740 prefix
= prefix_sections_string
;
3746 n
= (char *) xmalloc (strlen (prefix
) + strlen (name
) + 1);
3752 make_nobits
= FALSE
;
3754 p
= find_section_list (bfd_section_name (ibfd
, isection
), FALSE
,
3755 SECTION_CONTEXT_SET_FLAGS
);
3757 flags
= p
->flags
| (flags
& (SEC_HAS_CONTENTS
| SEC_RELOC
));
3758 else if (strip_symbols
== STRIP_NONDEBUG
3759 && (flags
& (SEC_ALLOC
| SEC_GROUP
)) != 0
3760 && !is_nondebug_keep_contents_section (ibfd
, isection
))
3762 flags
&= ~(SEC_HAS_CONTENTS
| SEC_LOAD
| SEC_GROUP
);
3763 if (obfd
->xvec
->flavour
== bfd_target_elf_flavour
)
3767 /* Twiddle the input section flags so that it seems to
3768 elf.c:copy_private_bfd_data that section flags have not
3769 changed between input and output sections. This hack
3770 prevents wholesale rewriting of the program headers. */
3771 isection
->flags
&= ~(SEC_HAS_CONTENTS
| SEC_LOAD
| SEC_GROUP
);
3775 osection
= bfd_make_section_anyway_with_flags (obfd
, name
, flags
);
3777 if (osection
== NULL
)
3779 err
= _("failed to create output section");
3784 elf_section_type (osection
) = SHT_NOBITS
;
3786 size
= bfd_section_size (ibfd
, isection
);
3787 size
= bfd_convert_section_size (ibfd
, isection
, obfd
, size
);
3789 size
= (size
+ interleave
- 1) / interleave
* copy_width
;
3790 else if (extract_symbol
)
3792 if (! bfd_set_section_size (obfd
, osection
, size
))
3794 err
= _("failed to set size");
3798 vma
= bfd_section_vma (ibfd
, isection
);
3799 p
= find_section_list (bfd_section_name (ibfd
, isection
), FALSE
,
3800 SECTION_CONTEXT_ALTER_VMA
| SECTION_CONTEXT_SET_VMA
);
3803 if (p
->context
& SECTION_CONTEXT_SET_VMA
)
3809 vma
+= change_section_address
;
3811 if (! bfd_set_section_vma (obfd
, osection
, vma
))
3813 err
= _("failed to set vma");
3817 lma
= isection
->lma
;
3818 p
= find_section_list (bfd_section_name (ibfd
, isection
), FALSE
,
3819 SECTION_CONTEXT_ALTER_LMA
| SECTION_CONTEXT_SET_LMA
);
3822 if (p
->context
& SECTION_CONTEXT_ALTER_LMA
)
3828 lma
+= change_section_address
;
3830 osection
->lma
= lma
;
3832 /* FIXME: This is probably not enough. If we change the LMA we
3833 may have to recompute the header for the file as well. */
3834 if (!bfd_set_section_alignment (obfd
,
3836 bfd_section_alignment (ibfd
, isection
)))
3838 err
= _("failed to set alignment");
3842 /* Copy merge entity size. */
3843 osection
->entsize
= isection
->entsize
;
3845 /* Copy compress status. */
3846 osection
->compress_status
= isection
->compress_status
;
3848 /* This used to be mangle_section; we do here to avoid using
3849 bfd_get_section_by_name since some formats allow multiple
3850 sections with the same name. */
3851 isection
->output_section
= osection
;
3852 isection
->output_offset
= 0;
3854 if ((isection
->flags
& SEC_GROUP
) != 0)
3856 asymbol
*gsym
= group_signature (isection
);
3860 gsym
->flags
|= BSF_KEEP
;
3861 if (ibfd
->xvec
->flavour
== bfd_target_elf_flavour
)
3862 elf_group_id (isection
) = gsym
;
3866 /* Allow the BFD backend to copy any private data it understands
3867 from the input section to the output section. */
3868 if (!bfd_copy_private_section_data (ibfd
, isection
, obfd
, osection
))
3870 err
= _("failed to copy private data");
3874 /* All went well. */
3879 bfd_nonfatal_message (NULL
, obfd
, osection
, err
);
3882 /* Return TRUE if input section ISECTION should be skipped. */
3885 skip_section (bfd
*ibfd
, sec_ptr isection
, bfd_boolean skip_copy
)
3891 /* If we have already failed earlier on,
3892 do not keep on generating complaints now. */
3899 if (is_strip_section (ibfd
, isection
))
3902 if (is_update_section (ibfd
, isection
))
3905 /* When merging a note section we skip the copying of the contents,
3906 but not the copying of the relocs associated with the contents. */
3907 if (skip_copy
&& is_merged_note_section (ibfd
, isection
))
3910 flags
= bfd_get_section_flags (ibfd
, isection
);
3911 if ((flags
& SEC_GROUP
) != 0)
3914 osection
= isection
->output_section
;
3915 size
= bfd_get_section_size (isection
);
3917 if (size
== 0 || osection
== 0)
3923 /* Add section SECTION_PATTERN to the list of sections that will have their
3924 relocations removed. */
3927 handle_remove_relocations_option (const char *section_pattern
)
3929 find_section_list (section_pattern
, TRUE
, SECTION_CONTEXT_REMOVE_RELOCS
);
3932 /* Return TRUE if ISECTION from IBFD should have its relocations removed,
3933 otherwise return FALSE. If the user has requested that relocations be
3934 removed from a section that does not have relocations then this
3935 function will still return TRUE. */
3938 discard_relocations (bfd
*ibfd ATTRIBUTE_UNUSED
, asection
*isection
)
3940 return (find_section_list (bfd_section_name (ibfd
, isection
), FALSE
,
3941 SECTION_CONTEXT_REMOVE_RELOCS
) != NULL
);
3944 /* Wrapper for dealing with --remove-section (-R) command line arguments.
3945 A special case is detected here, if the user asks to remove a relocation
3946 section (one starting with ".rela." or ".rel.") then this removal must
3947 be done using a different technique in a relocatable object. */
3950 handle_remove_section_option (const char *section_pattern
)
3952 if (strncmp (section_pattern
, ".rela.", 6) == 0)
3953 handle_remove_relocations_option (section_pattern
+ 5);
3954 else if (strncmp (section_pattern
, ".rel.", 5) == 0)
3955 handle_remove_relocations_option (section_pattern
+ 4);
3957 find_section_list (section_pattern
, TRUE
, SECTION_CONTEXT_REMOVE
);
3958 sections_removed
= TRUE
;
3961 /* Copy relocations in input section ISECTION of IBFD to an output
3962 section with the same name in OBFDARG. If stripping then don't
3963 copy any relocation info. */
3966 copy_relocations_in_section (bfd
*ibfd
, sec_ptr isection
, void *obfdarg
)
3968 bfd
*obfd
= (bfd
*) obfdarg
;
3974 if (skip_section (ibfd
, isection
, FALSE
))
3977 osection
= isection
->output_section
;
3979 /* Core files and DWO files do not need to be relocated. */
3980 if (bfd_get_format (obfd
) == bfd_core
3981 || strip_symbols
== STRIP_NONDWO
3982 || discard_relocations (ibfd
, isection
))
3986 relsize
= bfd_get_reloc_upper_bound (ibfd
, isection
);
3990 /* Do not complain if the target does not support relocations. */
3991 if (relsize
== -1 && bfd_get_error () == bfd_error_invalid_operation
)
3996 bfd_nonfatal_message (NULL
, ibfd
, isection
, NULL
);
4004 bfd_set_reloc (obfd
, osection
, NULL
, 0);
4005 osection
->flags
&= ~SEC_RELOC
;
4009 if (isection
->orelocation
!= NULL
)
4011 /* Some other function has already set up the output relocs
4012 for us, so scan those instead of the default relocs. */
4013 relcount
= isection
->reloc_count
;
4014 relpp
= isection
->orelocation
;
4018 relpp
= (arelent
**) xmalloc (relsize
);
4019 relcount
= bfd_canonicalize_reloc (ibfd
, isection
, relpp
, isympp
);
4023 bfd_nonfatal_message (NULL
, ibfd
, isection
,
4024 _("relocation count is negative"));
4029 if (strip_symbols
== STRIP_ALL
)
4031 /* Remove relocations which are not in
4032 keep_strip_specific_list. */
4033 arelent
**temp_relpp
;
4034 long temp_relcount
= 0;
4037 temp_relpp
= (arelent
**) xmalloc (relsize
);
4038 for (i
= 0; i
< relcount
; i
++)
4040 /* PR 17512: file: 9e907e0c. */
4041 if (relpp
[i
]->sym_ptr_ptr
4043 && * relpp
[i
]->sym_ptr_ptr
)
4044 if (is_specified_symbol (bfd_asymbol_name (*relpp
[i
]->sym_ptr_ptr
),
4045 keep_specific_htab
))
4046 temp_relpp
[temp_relcount
++] = relpp
[i
];
4048 relcount
= temp_relcount
;
4049 if (isection
->orelocation
== NULL
)
4054 bfd_set_reloc (obfd
, osection
, relcount
== 0 ? NULL
: relpp
, relcount
);
4057 osection
->flags
&= ~SEC_RELOC
;
4063 /* Copy the data of input section ISECTION of IBFD
4064 to an output section with the same name in OBFD. */
4067 copy_section (bfd
*ibfd
, sec_ptr isection
, void *obfdarg
)
4069 bfd
*obfd
= (bfd
*) obfdarg
;
4070 struct section_list
*p
;
4074 if (skip_section (ibfd
, isection
, TRUE
))
4077 osection
= isection
->output_section
;
4078 /* The output SHF_COMPRESSED section size is different from input if
4079 ELF classes of input and output aren't the same. We can't use
4080 the output section size since --interleave will shrink the output
4081 section. Size will be updated if the section is converted. */
4082 size
= bfd_get_section_size (isection
);
4084 if (bfd_get_section_flags (ibfd
, isection
) & SEC_HAS_CONTENTS
4085 && bfd_get_section_flags (obfd
, osection
) & SEC_HAS_CONTENTS
)
4087 bfd_byte
*memhunk
= NULL
;
4089 if (!bfd_get_full_section_contents (ibfd
, isection
, &memhunk
)
4090 || !bfd_convert_section_contents (ibfd
, isection
, obfd
,
4094 bfd_nonfatal_message (NULL
, ibfd
, isection
, NULL
);
4101 /* We don't handle leftover bytes (too many possible behaviors,
4102 and we don't know what the user wants). The section length
4103 must be a multiple of the number of bytes to swap. */
4104 if ((size
% reverse_bytes
) == 0)
4109 for (i
= 0; i
< size
; i
+= reverse_bytes
)
4110 for (j
= 0; j
< (unsigned long)(reverse_bytes
/ 2); j
++)
4112 bfd_byte
*m
= (bfd_byte
*) memhunk
;
4115 m
[i
+ j
] = m
[(i
+ reverse_bytes
) - (j
+ 1)];
4116 m
[(i
+ reverse_bytes
) - (j
+ 1)] = b
;
4120 /* User must pad the section up in order to do this. */
4121 fatal (_("cannot reverse bytes: length of section %s must be evenly divisible by %d"),
4122 bfd_section_name (ibfd
, isection
), reverse_bytes
);
4127 /* Keep only every `copy_byte'th byte in MEMHUNK. */
4128 char *from
= (char *) memhunk
+ copy_byte
;
4129 char *to
= (char *) memhunk
;
4130 char *end
= (char *) memhunk
+ size
;
4133 /* If the section address is not exactly divisible by the interleave,
4134 then we must bias the from address. If the copy_byte is less than
4135 the bias, then we must skip forward one interleave, and increment
4137 int extra
= isection
->lma
% interleave
;
4139 if (copy_byte
< extra
)
4142 for (; from
< end
; from
+= interleave
)
4143 for (i
= 0; i
< copy_width
; i
++)
4145 if (&from
[i
] >= end
)
4150 size
= (size
+ interleave
- 1 - copy_byte
) / interleave
* copy_width
;
4151 osection
->lma
/= interleave
;
4152 if (copy_byte
< extra
)
4156 if (!bfd_set_section_contents (obfd
, osection
, memhunk
, 0, size
))
4159 bfd_nonfatal_message (NULL
, obfd
, osection
, NULL
);
4165 else if ((p
= find_section_list (bfd_get_section_name (ibfd
, isection
),
4166 FALSE
, SECTION_CONTEXT_SET_FLAGS
)) != NULL
4167 && (p
->flags
& SEC_HAS_CONTENTS
) != 0)
4169 void *memhunk
= xmalloc (size
);
4171 /* We don't permit the user to turn off the SEC_HAS_CONTENTS
4172 flag--they can just remove the section entirely and add it
4173 back again. However, we do permit them to turn on the
4174 SEC_HAS_CONTENTS flag, and take it to mean that the section
4175 contents should be zeroed out. */
4177 memset (memhunk
, 0, size
);
4178 if (! bfd_set_section_contents (obfd
, osection
, memhunk
, 0, size
))
4181 bfd_nonfatal_message (NULL
, obfd
, osection
, NULL
);
4189 /* Get all the sections. This is used when --gap-fill or --pad-to is
4193 get_sections (bfd
*obfd ATTRIBUTE_UNUSED
, asection
*osection
, void *secppparg
)
4195 asection
***secppp
= (asection
***) secppparg
;
4197 **secppp
= osection
;
4201 /* Sort sections by VMA. This is called via qsort, and is used when
4202 --gap-fill or --pad-to is used. We force non loadable or empty
4203 sections to the front, where they are easier to ignore. */
4206 compare_section_lma (const void *arg1
, const void *arg2
)
4208 const asection
*const *sec1
= (const asection
* const *) arg1
;
4209 const asection
*const *sec2
= (const asection
* const *) arg2
;
4210 flagword flags1
, flags2
;
4212 /* Sort non loadable sections to the front. */
4213 flags1
= (*sec1
)->flags
;
4214 flags2
= (*sec2
)->flags
;
4215 if ((flags1
& SEC_HAS_CONTENTS
) == 0
4216 || (flags1
& SEC_LOAD
) == 0)
4218 if ((flags2
& SEC_HAS_CONTENTS
) != 0
4219 && (flags2
& SEC_LOAD
) != 0)
4224 if ((flags2
& SEC_HAS_CONTENTS
) == 0
4225 || (flags2
& SEC_LOAD
) == 0)
4229 /* Sort sections by LMA. */
4230 if ((*sec1
)->lma
> (*sec2
)->lma
)
4232 else if ((*sec1
)->lma
< (*sec2
)->lma
)
4235 /* Sort sections with the same LMA by size. */
4236 if (bfd_get_section_size (*sec1
) > bfd_get_section_size (*sec2
))
4238 else if (bfd_get_section_size (*sec1
) < bfd_get_section_size (*sec2
))
4244 /* Mark all the symbols which will be used in output relocations with
4245 the BSF_KEEP flag so that those symbols will not be stripped.
4247 Ignore relocations which will not appear in the output file. */
4250 mark_symbols_used_in_relocations (bfd
*ibfd
, sec_ptr isection
, void *symbolsarg
)
4252 asymbol
**symbols
= (asymbol
**) symbolsarg
;
4257 /* Ignore an input section with no corresponding output section. */
4258 if (isection
->output_section
== NULL
)
4261 relsize
= bfd_get_reloc_upper_bound (ibfd
, isection
);
4264 /* Do not complain if the target does not support relocations. */
4265 if (relsize
== -1 && bfd_get_error () == bfd_error_invalid_operation
)
4267 bfd_fatal (bfd_get_filename (ibfd
));
4273 relpp
= (arelent
**) xmalloc (relsize
);
4274 relcount
= bfd_canonicalize_reloc (ibfd
, isection
, relpp
, symbols
);
4276 bfd_fatal (bfd_get_filename (ibfd
));
4278 /* Examine each symbol used in a relocation. If it's not one of the
4279 special bfd section symbols, then mark it with BSF_KEEP. */
4280 for (i
= 0; i
< relcount
; i
++)
4282 /* See PRs 20923 and 20930 for reproducers for the NULL tests. */
4283 if (relpp
[i
]->sym_ptr_ptr
!= NULL
4284 && * relpp
[i
]->sym_ptr_ptr
!= NULL
4285 && *relpp
[i
]->sym_ptr_ptr
!= bfd_com_section_ptr
->symbol
4286 && *relpp
[i
]->sym_ptr_ptr
!= bfd_abs_section_ptr
->symbol
4287 && *relpp
[i
]->sym_ptr_ptr
!= bfd_und_section_ptr
->symbol
)
4288 (*relpp
[i
]->sym_ptr_ptr
)->flags
|= BSF_KEEP
;
4295 /* Write out debugging information. */
4298 write_debugging_info (bfd
*obfd
, void *dhandle
,
4299 long *symcountp ATTRIBUTE_UNUSED
,
4300 asymbol
***symppp ATTRIBUTE_UNUSED
)
4302 if (bfd_get_flavour (obfd
) == bfd_target_coff_flavour
4303 || bfd_get_flavour (obfd
) == bfd_target_elf_flavour
)
4305 bfd_byte
*syms
, *strings
= NULL
;
4306 bfd_size_type symsize
, stringsize
;
4307 asection
*stabsec
, *stabstrsec
;
4310 if (! write_stabs_in_sections_debugging_info (obfd
, dhandle
, &syms
,
4315 flags
= SEC_HAS_CONTENTS
| SEC_READONLY
| SEC_DEBUGGING
;
4316 stabsec
= bfd_make_section_with_flags (obfd
, ".stab", flags
);
4317 stabstrsec
= bfd_make_section_with_flags (obfd
, ".stabstr", flags
);
4319 || stabstrsec
== NULL
4320 || ! bfd_set_section_size (obfd
, stabsec
, symsize
)
4321 || ! bfd_set_section_size (obfd
, stabstrsec
, stringsize
)
4322 || ! bfd_set_section_alignment (obfd
, stabsec
, 2)
4323 || ! bfd_set_section_alignment (obfd
, stabstrsec
, 0))
4325 bfd_nonfatal_message (NULL
, obfd
, NULL
,
4326 _("can't create debugging section"));
4331 /* We can get away with setting the section contents now because
4332 the next thing the caller is going to do is copy over the
4333 real sections. We may someday have to split the contents
4334 setting out of this function. */
4335 if (! bfd_set_section_contents (obfd
, stabsec
, syms
, 0, symsize
)
4336 || ! bfd_set_section_contents (obfd
, stabstrsec
, strings
, 0,
4339 bfd_nonfatal_message (NULL
, obfd
, NULL
,
4340 _("can't set debugging section contents"));
4348 bfd_nonfatal_message (NULL
, obfd
, NULL
,
4349 _("don't know how to write debugging information for %s"),
4350 bfd_get_target (obfd
));
4354 /* If neither -D nor -U was specified explicitly,
4355 then use the configured default. */
4357 default_deterministic (void)
4359 if (deterministic
< 0)
4360 deterministic
= DEFAULT_AR_DETERMINISTIC
;
4364 strip_main (int argc
, char *argv
[])
4366 char *input_target
= NULL
;
4367 char *output_target
= NULL
;
4368 bfd_boolean show_version
= FALSE
;
4369 bfd_boolean formats_info
= FALSE
;
4372 char *output_file
= NULL
;
4376 while ((c
= getopt_long (argc
, argv
, "I:O:F:K:MN:R:o:sSpdgxXHhVvwDU",
4377 strip_options
, (int *) 0)) != EOF
)
4382 input_target
= optarg
;
4385 output_target
= optarg
;
4388 input_target
= output_target
= optarg
;
4391 handle_remove_section_option (optarg
);
4393 case OPTION_REMOVE_RELOCS
:
4394 handle_remove_relocations_option (optarg
);
4397 strip_symbols
= STRIP_ALL
;
4401 case 'd': /* Historic BSD alias for -g. Used by early NetBSD. */
4402 strip_symbols
= STRIP_DEBUG
;
4404 case OPTION_STRIP_DWO
:
4405 strip_symbols
= STRIP_DWO
;
4407 case OPTION_STRIP_UNNEEDED
:
4408 strip_symbols
= STRIP_UNNEEDED
;
4411 add_specific_symbol (optarg
, keep_specific_htab
);
4416 case OPTION_NO_MERGE_NOTES
:
4417 merge_notes
= FALSE
;
4420 add_specific_symbol (optarg
, strip_specific_htab
);
4423 output_file
= optarg
;
4426 preserve_dates
= TRUE
;
4429 deterministic
= TRUE
;
4432 deterministic
= FALSE
;
4435 discard_locals
= LOCALS_ALL
;
4438 discard_locals
= LOCALS_START_L
;
4444 show_version
= TRUE
;
4446 case OPTION_FORMATS_INFO
:
4447 formats_info
= TRUE
;
4449 case OPTION_ONLY_KEEP_DEBUG
:
4450 strip_symbols
= STRIP_NONDEBUG
;
4452 case OPTION_KEEP_FILE_SYMBOLS
:
4453 keep_file_symbols
= 1;
4456 /* We've been given a long option. */
4463 strip_usage (stdout
, 0);
4465 strip_usage (stderr
, 1);
4476 print_version ("strip");
4478 default_deterministic ();
4480 /* Default is to strip all symbols. */
4481 if (strip_symbols
== STRIP_UNDEF
4482 && discard_locals
== LOCALS_UNDEF
4483 && htab_elements (strip_specific_htab
) == 0)
4484 strip_symbols
= STRIP_ALL
;
4486 if (output_target
== NULL
)
4487 output_target
= input_target
;
4491 || (output_file
!= NULL
&& (i
+ 1) < argc
))
4492 strip_usage (stderr
, 1);
4494 for (; i
< argc
; i
++)
4496 int hold_status
= status
;
4497 struct stat statbuf
;
4500 if (get_file_size (argv
[i
]) < 1)
4507 /* No need to check the return value of stat().
4508 It has already been checked in get_file_size(). */
4509 stat (argv
[i
], &statbuf
);
4511 if (output_file
== NULL
4512 || filename_cmp (argv
[i
], output_file
) == 0)
4513 tmpname
= make_tempname (argv
[i
]);
4515 tmpname
= output_file
;
4517 if (tmpname
== NULL
)
4519 bfd_nonfatal_message (argv
[i
], NULL
, NULL
,
4520 _("could not create temporary file to hold stripped copy"));
4526 copy_file (argv
[i
], tmpname
, input_target
, output_target
, NULL
);
4530 set_times (tmpname
, &statbuf
);
4531 if (output_file
!= tmpname
)
4532 status
= (smart_rename (tmpname
,
4533 output_file
? output_file
: argv
[i
],
4534 preserve_dates
) != 0);
4536 status
= hold_status
;
4539 unlink_if_ordinary (tmpname
);
4540 if (output_file
!= tmpname
)
4547 /* Set up PE subsystem. */
4550 set_pe_subsystem (const char *s
)
4552 const char *version
, *subsystem
;
4562 { "native", 0, IMAGE_SUBSYSTEM_NATIVE
},
4563 { "windows", 0, IMAGE_SUBSYSTEM_WINDOWS_GUI
},
4564 { "console", 0, IMAGE_SUBSYSTEM_WINDOWS_CUI
},
4565 { "posix", 0, IMAGE_SUBSYSTEM_POSIX_CUI
},
4566 { "wince", 0, IMAGE_SUBSYSTEM_WINDOWS_CE_GUI
},
4567 { "efi-app", 1, IMAGE_SUBSYSTEM_EFI_APPLICATION
},
4568 { "efi-bsd", 1, IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER
},
4569 { "efi-rtd", 1, IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER
},
4570 { "sal-rtd", 1, IMAGE_SUBSYSTEM_SAL_RUNTIME_DRIVER
},
4571 { "xbox", 0, IMAGE_SUBSYSTEM_XBOX
}
4577 /* Check for the presence of a version number. */
4578 version
= strchr (s
, ':');
4579 if (version
== NULL
)
4583 int len
= version
- s
;
4587 version
= copy
+ 1 + len
;
4588 pe_major_subsystem_version
= strtoul (version
, ©
, 0);
4590 pe_minor_subsystem_version
= strtoul (copy
+ 1, ©
, 0);
4592 non_fatal (_("%s: bad version in PE subsystem"), s
);
4595 /* Check for numeric subsystem. */
4596 value
= (short) strtol (subsystem
, ©
, 0);
4599 for (i
= 0; i
< ARRAY_SIZE (v
); i
++)
4600 if (v
[i
].value
== value
)
4602 pe_subsystem
= value
;
4603 set_def
= v
[i
].set_def
;
4609 /* Search for subsystem by name. */
4610 for (i
= 0; i
< ARRAY_SIZE (v
); i
++)
4611 if (strcmp (subsystem
, v
[i
].name
) == 0)
4613 pe_subsystem
= v
[i
].value
;
4614 set_def
= v
[i
].set_def
;
4622 fatal (_("unknown PE subsystem: %s"), s
);
4627 if (pe_file_alignment
== (bfd_vma
) -1)
4628 pe_file_alignment
= PE_DEF_FILE_ALIGNMENT
;
4629 if (pe_section_alignment
== (bfd_vma
) -1)
4630 pe_section_alignment
= PE_DEF_SECTION_ALIGNMENT
;
4634 free ((char *) subsystem
);
4637 /* Convert EFI target to PEI target. */
4640 convert_efi_target (char *efi
)
4646 if (strcmp (efi
+ 4, "ia32") == 0)
4648 /* Change ia32 to i386. */
4653 else if (strcmp (efi
+ 4, "x86_64") == 0)
4655 /* Change x86_64 to x86-64. */
4660 /* Allocate and return a pointer to a struct section_add, initializing the
4661 structure using ARG, a string in the format "sectionname=filename".
4662 The returned structure will have its next pointer set to NEXT. The
4663 OPTION field is the name of the command line option currently being
4664 parsed, and is only used if an error needs to be reported. */
4666 static struct section_add
*
4667 init_section_add (const char *arg
,
4668 struct section_add
*next
,
4671 struct section_add
*pa
;
4674 s
= strchr (arg
, '=');
4676 fatal (_("bad format for %s"), option
);
4678 pa
= (struct section_add
*) xmalloc (sizeof (struct section_add
));
4679 pa
->name
= xstrndup (arg
, s
- arg
);
4680 pa
->filename
= s
+ 1;
4682 pa
->contents
= NULL
;
4688 /* Load the file specified in PA, allocating memory to hold the file
4689 contents, and store a pointer to the allocated memory in the contents
4690 field of PA. The size field of PA is also updated. All errors call
4694 section_add_load_file (struct section_add
*pa
)
4699 /* We don't use get_file_size so that we can do
4700 --add-section .note.GNU_stack=/dev/null
4701 get_file_size doesn't work on /dev/null. */
4703 f
= fopen (pa
->filename
, FOPEN_RB
);
4705 fatal (_("cannot open: %s: %s"),
4706 pa
->filename
, strerror (errno
));
4710 pa
->contents
= (bfd_byte
*) xmalloc (alloc
);
4718 pa
->contents
= (bfd_byte
*) xrealloc (pa
->contents
, alloc
);
4721 got
= fread (pa
->contents
+ off
, 1, alloc
- off
, f
);
4723 fatal (_("%s: fread failed"), pa
->filename
);
4734 copy_main (int argc
, char *argv
[])
4736 char *input_filename
= NULL
;
4737 char *output_filename
= NULL
;
4739 char *input_target
= NULL
;
4740 char *output_target
= NULL
;
4741 bfd_boolean show_version
= FALSE
;
4742 bfd_boolean change_warn
= TRUE
;
4743 bfd_boolean formats_info
= FALSE
;
4745 struct stat statbuf
;
4746 const bfd_arch_info_type
*input_arch
= NULL
;
4748 while ((c
= getopt_long (argc
, argv
, "b:B:i:I:j:K:MN:s:O:d:F:L:G:R:SpgxXHhVvW:wDU",
4749 copy_options
, (int *) 0)) != EOF
)
4754 copy_byte
= atoi (optarg
);
4756 fatal (_("byte number must be non-negative"));
4760 input_arch
= bfd_scan_arch (optarg
);
4761 if (input_arch
== NULL
)
4762 fatal (_("architecture %s unknown"), optarg
);
4768 interleave
= atoi (optarg
);
4770 fatal (_("interleave must be positive"));
4776 case OPTION_INTERLEAVE_WIDTH
:
4777 copy_width
= atoi (optarg
);
4779 fatal(_("interleave width must be positive"));
4783 case 's': /* "source" - 'I' is preferred */
4784 input_target
= optarg
;
4788 case 'd': /* "destination" - 'O' is preferred */
4789 output_target
= optarg
;
4793 input_target
= output_target
= optarg
;
4797 find_section_list (optarg
, TRUE
, SECTION_CONTEXT_COPY
);
4798 sections_copied
= TRUE
;
4802 handle_remove_section_option (optarg
);
4805 case OPTION_REMOVE_RELOCS
:
4806 handle_remove_relocations_option (optarg
);
4810 strip_symbols
= STRIP_ALL
;
4814 strip_symbols
= STRIP_DEBUG
;
4817 case OPTION_STRIP_DWO
:
4818 strip_symbols
= STRIP_DWO
;
4821 case OPTION_STRIP_UNNEEDED
:
4822 strip_symbols
= STRIP_UNNEEDED
;
4825 case OPTION_ONLY_KEEP_DEBUG
:
4826 strip_symbols
= STRIP_NONDEBUG
;
4829 case OPTION_KEEP_FILE_SYMBOLS
:
4830 keep_file_symbols
= 1;
4833 case OPTION_ADD_GNU_DEBUGLINK
:
4834 long_section_names
= ENABLE
;
4835 gnu_debuglink_filename
= optarg
;
4839 add_specific_symbol (optarg
, keep_specific_htab
);
4845 case OPTION_NO_MERGE_NOTES
:
4846 merge_notes
= FALSE
;
4850 add_specific_symbol (optarg
, strip_specific_htab
);
4853 case OPTION_STRIP_UNNEEDED_SYMBOL
:
4854 add_specific_symbol (optarg
, strip_unneeded_htab
);
4858 add_specific_symbol (optarg
, localize_specific_htab
);
4861 case OPTION_GLOBALIZE_SYMBOL
:
4862 add_specific_symbol (optarg
, globalize_specific_htab
);
4866 add_specific_symbol (optarg
, keepglobal_specific_htab
);
4870 add_specific_symbol (optarg
, weaken_specific_htab
);
4874 preserve_dates
= TRUE
;
4878 deterministic
= TRUE
;
4882 deterministic
= FALSE
;
4890 discard_locals
= LOCALS_ALL
;
4894 discard_locals
= LOCALS_START_L
;
4902 show_version
= TRUE
;
4905 case OPTION_FORMATS_INFO
:
4906 formats_info
= TRUE
;
4913 case OPTION_ADD_SECTION
:
4914 add_sections
= init_section_add (optarg
, add_sections
,
4916 section_add_load_file (add_sections
);
4919 case OPTION_UPDATE_SECTION
:
4920 update_sections
= init_section_add (optarg
, update_sections
,
4921 "--update-section");
4922 section_add_load_file (update_sections
);
4925 case OPTION_DUMP_SECTION
:
4926 dump_sections
= init_section_add (optarg
, dump_sections
,
4930 case OPTION_ADD_SYMBOL
:
4933 struct addsym_node
*newsym
= xmalloc (sizeof *newsym
);
4935 newsym
->next
= NULL
;
4936 s
= strchr (optarg
, '=');
4938 fatal (_("bad format for %s"), "--add-symbol");
4939 t
= strchr (s
+ 1, ':');
4941 newsym
->symdef
= xstrndup (optarg
, s
- optarg
);
4944 newsym
->section
= xstrndup (s
+ 1, t
- (s
+ 1));
4945 newsym
->symval
= strtol (t
+ 1, NULL
, 0);
4949 newsym
->section
= NULL
;
4950 newsym
->symval
= strtol (s
+ 1, NULL
, 0);
4954 t
= strchr (t
+ 1, ',');
4955 newsym
->othersym
= NULL
;
4957 newsym
->flags
= parse_symflags (t
+1, &newsym
->othersym
);
4959 newsym
->flags
= BSF_GLOBAL
;
4961 /* Keep 'othersym' symbols at the front of the list. */
4962 if (newsym
->othersym
)
4964 newsym
->next
= add_sym_list
;
4966 add_sym_tail
= &newsym
->next
;
4967 add_sym_list
= newsym
;
4971 *add_sym_tail
= newsym
;
4972 add_sym_tail
= &newsym
->next
;
4978 case OPTION_CHANGE_START
:
4979 change_start
= parse_vma (optarg
, "--change-start");
4982 case OPTION_CHANGE_SECTION_ADDRESS
:
4983 case OPTION_CHANGE_SECTION_LMA
:
4984 case OPTION_CHANGE_SECTION_VMA
:
4986 struct section_list
* p
;
4987 unsigned int context
= 0;
4991 char *option
= NULL
;
4996 case OPTION_CHANGE_SECTION_ADDRESS
:
4997 option
= "--change-section-address";
4998 context
= SECTION_CONTEXT_ALTER_LMA
| SECTION_CONTEXT_ALTER_VMA
;
5000 case OPTION_CHANGE_SECTION_LMA
:
5001 option
= "--change-section-lma";
5002 context
= SECTION_CONTEXT_ALTER_LMA
;
5004 case OPTION_CHANGE_SECTION_VMA
:
5005 option
= "--change-section-vma";
5006 context
= SECTION_CONTEXT_ALTER_VMA
;
5010 s
= strchr (optarg
, '=');
5013 s
= strchr (optarg
, '+');
5016 s
= strchr (optarg
, '-');
5018 fatal (_("bad format for %s"), option
);
5023 /* Correct the context. */
5026 case OPTION_CHANGE_SECTION_ADDRESS
:
5027 context
= SECTION_CONTEXT_SET_LMA
| SECTION_CONTEXT_SET_VMA
;
5029 case OPTION_CHANGE_SECTION_LMA
:
5030 context
= SECTION_CONTEXT_SET_LMA
;
5032 case OPTION_CHANGE_SECTION_VMA
:
5033 context
= SECTION_CONTEXT_SET_VMA
;
5039 name
= (char *) xmalloc (len
+ 1);
5040 strncpy (name
, optarg
, len
);
5043 p
= find_section_list (name
, TRUE
, context
);
5045 val
= parse_vma (s
+ 1, option
);
5051 case OPTION_CHANGE_SECTION_ADDRESS
:
5055 case OPTION_CHANGE_SECTION_LMA
:
5059 case OPTION_CHANGE_SECTION_VMA
:
5066 case OPTION_CHANGE_ADDRESSES
:
5067 change_section_address
= parse_vma (optarg
, "--change-addresses");
5068 change_start
= change_section_address
;
5071 case OPTION_CHANGE_WARNINGS
:
5075 case OPTION_CHANGE_LEADING_CHAR
:
5076 change_leading_char
= TRUE
;
5079 case OPTION_COMPRESS_DEBUG_SECTIONS
:
5082 if (strcasecmp (optarg
, "none") == 0)
5083 do_debug_sections
= decompress
;
5084 else if (strcasecmp (optarg
, "zlib") == 0)
5085 do_debug_sections
= compress_zlib
;
5086 else if (strcasecmp (optarg
, "zlib-gnu") == 0)
5087 do_debug_sections
= compress_gnu_zlib
;
5088 else if (strcasecmp (optarg
, "zlib-gabi") == 0)
5089 do_debug_sections
= compress_gabi_zlib
;
5091 fatal (_("unrecognized --compress-debug-sections type `%s'"),
5095 do_debug_sections
= compress
;
5098 case OPTION_DEBUGGING
:
5099 convert_debugging
= TRUE
;
5102 case OPTION_DECOMPRESS_DEBUG_SECTIONS
:
5103 do_debug_sections
= decompress
;
5106 case OPTION_ELF_STT_COMMON
:
5107 if (strcasecmp (optarg
, "yes") == 0)
5108 do_elf_stt_common
= elf_stt_common
;
5109 else if (strcasecmp (optarg
, "no") == 0)
5110 do_elf_stt_common
= no_elf_stt_common
;
5112 fatal (_("unrecognized --elf-stt-common= option `%s'"),
5116 case OPTION_GAP_FILL
:
5118 bfd_vma gap_fill_vma
;
5120 gap_fill_vma
= parse_vma (optarg
, "--gap-fill");
5121 gap_fill
= (bfd_byte
) gap_fill_vma
;
5122 if ((bfd_vma
) gap_fill
!= gap_fill_vma
)
5126 sprintf_vma (buff
, gap_fill_vma
);
5128 non_fatal (_("Warning: truncating gap-fill from 0x%s to 0x%x"),
5131 gap_fill_set
= TRUE
;
5135 case OPTION_NO_CHANGE_WARNINGS
:
5136 change_warn
= FALSE
;
5140 pad_to
= parse_vma (optarg
, "--pad-to");
5144 case OPTION_REMOVE_LEADING_CHAR
:
5145 remove_leading_char
= TRUE
;
5148 case OPTION_REDEFINE_SYM
:
5150 /* Insert this redefinition onto redefine_specific_htab. */
5154 const char *nextarg
;
5155 char *source
, *target
;
5157 s
= strchr (optarg
, '=');
5159 fatal (_("bad format for %s"), "--redefine-sym");
5162 source
= (char *) xmalloc (len
+ 1);
5163 strncpy (source
, optarg
, len
);
5167 len
= strlen (nextarg
);
5168 target
= (char *) xmalloc (len
+ 1);
5169 strcpy (target
, nextarg
);
5171 add_redefine_and_check ("--redefine-sym", source
, target
);
5178 case OPTION_REDEFINE_SYMS
:
5179 add_redefine_syms_file (optarg
);
5182 case OPTION_SET_SECTION_FLAGS
:
5184 struct section_list
*p
;
5189 s
= strchr (optarg
, '=');
5191 fatal (_("bad format for %s"), "--set-section-flags");
5194 name
= (char *) xmalloc (len
+ 1);
5195 strncpy (name
, optarg
, len
);
5198 p
= find_section_list (name
, TRUE
, SECTION_CONTEXT_SET_FLAGS
);
5200 p
->flags
= parse_flags (s
+ 1);
5204 case OPTION_RENAME_SECTION
:
5207 const char *eq
, *fl
;
5212 eq
= strchr (optarg
, '=');
5214 fatal (_("bad format for %s"), "--rename-section");
5218 fatal (_("bad format for %s"), "--rename-section");
5220 old_name
= (char *) xmalloc (len
+ 1);
5221 strncpy (old_name
, optarg
, len
);
5225 fl
= strchr (eq
, ',');
5228 flags
= parse_flags (fl
+ 1);
5238 fatal (_("bad format for %s"), "--rename-section");
5240 new_name
= (char *) xmalloc (len
+ 1);
5241 strncpy (new_name
, eq
, len
);
5244 add_section_rename (old_name
, new_name
, flags
);
5248 case OPTION_SET_START
:
5249 set_start
= parse_vma (optarg
, "--set-start");
5250 set_start_set
= TRUE
;
5253 case OPTION_SREC_LEN
:
5254 _bfd_srec_len
= parse_vma (optarg
, "--srec-len");
5257 case OPTION_SREC_FORCES3
:
5258 _bfd_srec_forceS3
= TRUE
;
5261 case OPTION_STRIP_SYMBOLS
:
5262 add_specific_symbols (optarg
, strip_specific_htab
);
5265 case OPTION_STRIP_UNNEEDED_SYMBOLS
:
5266 add_specific_symbols (optarg
, strip_unneeded_htab
);
5269 case OPTION_KEEP_SYMBOLS
:
5270 add_specific_symbols (optarg
, keep_specific_htab
);
5273 case OPTION_LOCALIZE_HIDDEN
:
5274 localize_hidden
= TRUE
;
5277 case OPTION_LOCALIZE_SYMBOLS
:
5278 add_specific_symbols (optarg
, localize_specific_htab
);
5281 case OPTION_LONG_SECTION_NAMES
:
5282 if (!strcmp ("enable", optarg
))
5283 long_section_names
= ENABLE
;
5284 else if (!strcmp ("disable", optarg
))
5285 long_section_names
= DISABLE
;
5286 else if (!strcmp ("keep", optarg
))
5287 long_section_names
= KEEP
;
5289 fatal (_("unknown long section names option '%s'"), optarg
);
5292 case OPTION_GLOBALIZE_SYMBOLS
:
5293 add_specific_symbols (optarg
, globalize_specific_htab
);
5296 case OPTION_KEEPGLOBAL_SYMBOLS
:
5297 add_specific_symbols (optarg
, keepglobal_specific_htab
);
5300 case OPTION_WEAKEN_SYMBOLS
:
5301 add_specific_symbols (optarg
, weaken_specific_htab
);
5304 case OPTION_ALT_MACH_CODE
:
5305 use_alt_mach_code
= strtoul (optarg
, NULL
, 0);
5306 if (use_alt_mach_code
== 0)
5307 fatal (_("unable to parse alternative machine code"));
5310 case OPTION_PREFIX_SYMBOLS
:
5311 prefix_symbols_string
= optarg
;
5314 case OPTION_PREFIX_SECTIONS
:
5315 prefix_sections_string
= optarg
;
5318 case OPTION_PREFIX_ALLOC_SECTIONS
:
5319 prefix_alloc_sections_string
= optarg
;
5322 case OPTION_READONLY_TEXT
:
5323 bfd_flags_to_set
|= WP_TEXT
;
5324 bfd_flags_to_clear
&= ~WP_TEXT
;
5327 case OPTION_WRITABLE_TEXT
:
5328 bfd_flags_to_clear
|= WP_TEXT
;
5329 bfd_flags_to_set
&= ~WP_TEXT
;
5333 bfd_flags_to_set
|= D_PAGED
;
5334 bfd_flags_to_clear
&= ~D_PAGED
;
5338 bfd_flags_to_clear
|= D_PAGED
;
5339 bfd_flags_to_set
&= ~D_PAGED
;
5342 case OPTION_EXTRACT_DWO
:
5343 strip_symbols
= STRIP_NONDWO
;
5346 case OPTION_EXTRACT_SYMBOL
:
5347 extract_symbol
= TRUE
;
5350 case OPTION_REVERSE_BYTES
:
5352 int prev
= reverse_bytes
;
5354 reverse_bytes
= atoi (optarg
);
5355 if ((reverse_bytes
<= 0) || ((reverse_bytes
% 2) != 0))
5356 fatal (_("number of bytes to reverse must be positive and even"));
5358 if (prev
&& prev
!= reverse_bytes
)
5359 non_fatal (_("Warning: ignoring previous --reverse-bytes value of %d"),
5364 case OPTION_FILE_ALIGNMENT
:
5365 pe_file_alignment
= parse_vma (optarg
, "--file-alignment");
5371 pe_heap_reserve
= strtoul (optarg
, &end
, 0);
5373 || (*end
!= '.' && *end
!= '\0'))
5374 non_fatal (_("%s: invalid reserve value for --heap"),
5376 else if (*end
!= '\0')
5378 pe_heap_commit
= strtoul (end
+ 1, &end
, 0);
5380 non_fatal (_("%s: invalid commit value for --heap"),
5386 case OPTION_IMAGE_BASE
:
5387 pe_image_base
= parse_vma (optarg
, "--image-base");
5390 case OPTION_SECTION_ALIGNMENT
:
5391 pe_section_alignment
= parse_vma (optarg
,
5392 "--section-alignment");
5395 case OPTION_SUBSYSTEM
:
5396 set_pe_subsystem (optarg
);
5402 pe_stack_reserve
= strtoul (optarg
, &end
, 0);
5404 || (*end
!= '.' && *end
!= '\0'))
5405 non_fatal (_("%s: invalid reserve value for --stack"),
5407 else if (*end
!= '\0')
5409 pe_stack_commit
= strtoul (end
+ 1, &end
, 0);
5411 non_fatal (_("%s: invalid commit value for --stack"),
5418 /* We've been given a long option. */
5423 copy_usage (stdout
, 0);
5426 copy_usage (stderr
, 1);
5437 print_version ("objcopy");
5439 if (interleave
&& copy_byte
== -1)
5440 fatal (_("interleave start byte must be set with --byte"));
5442 if (copy_byte
>= interleave
)
5443 fatal (_("byte number must be less than interleave"));
5445 if (copy_width
> interleave
- copy_byte
)
5446 fatal (_("interleave width must be less than or equal to interleave - byte`"));
5448 if (optind
== argc
|| optind
+ 2 < argc
)
5449 copy_usage (stderr
, 1);
5451 input_filename
= argv
[optind
];
5452 if (optind
+ 1 < argc
)
5453 output_filename
= argv
[optind
+ 1];
5455 default_deterministic ();
5457 /* Default is to strip no symbols. */
5458 if (strip_symbols
== STRIP_UNDEF
&& discard_locals
== LOCALS_UNDEF
)
5459 strip_symbols
= STRIP_NONE
;
5461 if (output_target
== NULL
)
5462 output_target
= input_target
;
5464 /* Convert input EFI target to PEI target. */
5465 if (input_target
!= NULL
5466 && strncmp (input_target
, "efi-", 4) == 0)
5470 efi
= xstrdup (output_target
+ 4);
5471 if (strncmp (efi
, "bsdrv-", 6) == 0
5472 || strncmp (efi
, "rtdrv-", 6) == 0)
5474 else if (strncmp (efi
, "app-", 4) != 0)
5475 fatal (_("unknown input EFI target: %s"), input_target
);
5478 convert_efi_target (efi
);
5481 /* Convert output EFI target to PEI target. */
5482 if (output_target
!= NULL
5483 && strncmp (output_target
, "efi-", 4) == 0)
5487 efi
= xstrdup (output_target
+ 4);
5488 if (strncmp (efi
, "app-", 4) == 0)
5490 if (pe_subsystem
== -1)
5491 pe_subsystem
= IMAGE_SUBSYSTEM_EFI_APPLICATION
;
5493 else if (strncmp (efi
, "bsdrv-", 6) == 0)
5495 if (pe_subsystem
== -1)
5496 pe_subsystem
= IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER
;
5499 else if (strncmp (efi
, "rtdrv-", 6) == 0)
5501 if (pe_subsystem
== -1)
5502 pe_subsystem
= IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER
;
5506 fatal (_("unknown output EFI target: %s"), output_target
);
5508 if (pe_file_alignment
== (bfd_vma
) -1)
5509 pe_file_alignment
= PE_DEF_FILE_ALIGNMENT
;
5510 if (pe_section_alignment
== (bfd_vma
) -1)
5511 pe_section_alignment
= PE_DEF_SECTION_ALIGNMENT
;
5513 output_target
= efi
;
5514 convert_efi_target (efi
);
5518 if (stat (input_filename
, & statbuf
) < 0)
5519 fatal (_("warning: could not locate '%s'. System error message: %s"),
5520 input_filename
, strerror (errno
));
5522 /* If there is no destination file, or the source and destination files
5523 are the same, then create a temp and rename the result into the input. */
5524 if (output_filename
== NULL
5525 || filename_cmp (input_filename
, output_filename
) == 0)
5526 tmpname
= make_tempname (input_filename
);
5528 tmpname
= output_filename
;
5530 if (tmpname
== NULL
)
5531 fatal (_("warning: could not create temporary file whilst copying '%s', (error: %s)"),
5532 input_filename
, strerror (errno
));
5534 copy_file (input_filename
, tmpname
, input_target
, output_target
, input_arch
);
5538 set_times (tmpname
, &statbuf
);
5539 if (tmpname
!= output_filename
)
5540 status
= (smart_rename (tmpname
, input_filename
,
5541 preserve_dates
) != 0);
5544 unlink_if_ordinary (tmpname
);
5546 if (tmpname
!= output_filename
)
5551 struct section_list
*p
;
5553 for (p
= change_sections
; p
!= NULL
; p
= p
->next
)
5557 if (p
->context
& (SECTION_CONTEXT_SET_VMA
| SECTION_CONTEXT_ALTER_VMA
))
5561 sprintf_vma (buff
, p
->vma_val
);
5563 /* xgettext:c-format */
5564 non_fatal (_("%s %s%c0x%s never used"),
5565 "--change-section-vma",
5567 p
->context
& SECTION_CONTEXT_SET_VMA
? '=' : '+',
5571 if (p
->context
& (SECTION_CONTEXT_SET_LMA
| SECTION_CONTEXT_ALTER_LMA
))
5575 sprintf_vma (buff
, p
->lma_val
);
5577 /* xgettext:c-format */
5578 non_fatal (_("%s %s%c0x%s never used"),
5579 "--change-section-lma",
5581 p
->context
& SECTION_CONTEXT_SET_LMA
? '=' : '+',
5592 main (int argc
, char *argv
[])
5594 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
5595 setlocale (LC_MESSAGES
, "");
5597 #if defined (HAVE_SETLOCALE)
5598 setlocale (LC_CTYPE
, "");
5600 bindtextdomain (PACKAGE
, LOCALEDIR
);
5601 textdomain (PACKAGE
);
5603 program_name
= argv
[0];
5604 xmalloc_set_program_name (program_name
);
5606 START_PROGRESS (program_name
, 0);
5608 expandargv (&argc
, &argv
);
5610 strip_symbols
= STRIP_UNDEF
;
5611 discard_locals
= LOCALS_UNDEF
;
5614 set_default_bfd_target ();
5618 int i
= strlen (program_name
);
5619 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5620 /* Drop the .exe suffix, if any. */
5621 if (i
> 4 && FILENAME_CMP (program_name
+ i
- 4, ".exe") == 0)
5624 program_name
[i
] = '\0';
5627 is_strip
= (i
>= 5 && FILENAME_CMP (program_name
+ i
- 5, "strip") == 0);
5630 create_symbol_htabs ();
5633 bfd_set_error_program_name (argv
[0]);
5636 strip_main (argc
, argv
);
5638 copy_main (argc
, argv
);
5640 END_PROGRESS (program_name
);