1 /* objcopy.c -- copy object file from input to output, optionally massaging it.
2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
4 Free Software Foundation, Inc.
6 This file is part of GNU Binutils.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
27 #include "libiberty.h"
30 #include "filenames.h"
36 struct is_specified_symbol_predicate_data
42 /* A list to support redefine_sym. */
47 struct redefine_node *next;
50 typedef struct section_rename
52 const char * old_name;
53 const char * new_name;
55 struct section_rename * next;
59 /* List of sections to be renamed. */
60 static section_rename *section_rename_list;
62 static asymbol **isympp = NULL; /* Input symbols. */
63 static asymbol **osympp = NULL; /* Output symbols that survive stripping. */
65 /* If `copy_byte' >= 0, copy only that byte of every `interleave' bytes. */
66 static int copy_byte = -1;
67 static int interleave = 4;
69 static bfd_boolean verbose; /* Print file and target names. */
70 static bfd_boolean preserve_dates; /* Preserve input file timestamp. */
71 static int status = 0; /* Exit status. */
76 STRIP_NONE, /* Don't strip. */
77 STRIP_DEBUG, /* Strip all debugger symbols. */
78 STRIP_UNNEEDED, /* Strip unnecessary symbols. */
79 STRIP_NONDEBUG, /* Strip everything but debug info. */
80 STRIP_ALL /* Strip all symbols. */
83 /* Which symbols to remove. */
84 static enum strip_action strip_symbols;
89 LOCALS_START_L, /* Discard locals starting with L. */
90 LOCALS_ALL /* Discard all locals. */
93 /* Which local symbols to remove. Overrides STRIP_ALL. */
94 static enum locals_action discard_locals;
96 /* What kind of change to perform. */
104 /* Structure used to hold lists of sections and actions to take. */
107 struct section_list * next; /* Next section to change. */
108 const char * name; /* Section name. */
109 bfd_boolean used; /* Whether this entry was used. */
110 bfd_boolean remove; /* Whether to remove this section. */
111 bfd_boolean copy; /* Whether to copy this section. */
112 enum change_action change_vma;/* Whether to change or set VMA. */
113 bfd_vma vma_val; /* Amount to change by or set to. */
114 enum change_action change_lma;/* Whether to change or set LMA. */
115 bfd_vma lma_val; /* Amount to change by or set to. */
116 bfd_boolean set_flags; /* Whether to set the section flags. */
117 flagword flags; /* What to set the section flags to. */
120 static struct section_list *change_sections;
122 /* TRUE if some sections are to be removed. */
123 static bfd_boolean sections_removed;
125 /* TRUE if only some sections are to be copied. */
126 static bfd_boolean sections_copied;
128 /* Changes to the start address. */
129 static bfd_vma change_start = 0;
130 static bfd_boolean set_start_set = FALSE;
131 static bfd_vma set_start;
133 /* Changes to section addresses. */
134 static bfd_vma change_section_address = 0;
136 /* Filling gaps between sections. */
137 static bfd_boolean gap_fill_set = FALSE;
138 static bfd_byte gap_fill = 0;
140 /* Pad to a given address. */
141 static bfd_boolean pad_to_set = FALSE;
142 static bfd_vma pad_to;
144 /* Use alternative machine code? */
145 static unsigned long use_alt_mach_code = 0;
147 /* Output BFD flags user wants to set or clear */
148 static flagword bfd_flags_to_set;
149 static flagword bfd_flags_to_clear;
151 /* List of sections to add. */
154 /* Next section to add. */
155 struct section_add *next;
156 /* Name of section to add. */
158 /* Name of file holding section contents. */
159 const char *filename;
162 /* Contents of file. */
164 /* BFD section, after it has been added. */
168 /* List of sections to add to the output BFD. */
169 static struct section_add *add_sections;
171 /* If non-NULL the argument to --add-gnu-debuglink.
172 This should be the filename to store in the .gnu_debuglink section. */
173 static const char * gnu_debuglink_filename = NULL;
175 /* Whether to convert debugging information. */
176 static bfd_boolean convert_debugging = FALSE;
178 /* Whether to change the leading character in symbol names. */
179 static bfd_boolean change_leading_char = FALSE;
181 /* Whether to remove the leading character from global symbol names. */
182 static bfd_boolean remove_leading_char = FALSE;
184 /* Whether to permit wildcard in symbol comparison. */
185 static bfd_boolean wildcard = FALSE;
187 /* True if --localize-hidden is in effect. */
188 static bfd_boolean localize_hidden = FALSE;
190 /* List of symbols to strip, keep, localize, keep-global, weaken,
192 static htab_t strip_specific_htab = NULL;
193 static htab_t strip_unneeded_htab = NULL;
194 static htab_t keep_specific_htab = NULL;
195 static htab_t localize_specific_htab = NULL;
196 static htab_t globalize_specific_htab = NULL;
197 static htab_t keepglobal_specific_htab = NULL;
198 static htab_t weaken_specific_htab = NULL;
199 static struct redefine_node *redefine_sym_list = NULL;
201 /* If this is TRUE, we weaken global symbols (set BSF_WEAK). */
202 static bfd_boolean weaken = FALSE;
204 /* If this is TRUE, we retain BSF_FILE symbols. */
205 static bfd_boolean keep_file_symbols = FALSE;
207 /* Prefix symbols/sections. */
208 static char *prefix_symbols_string = 0;
209 static char *prefix_sections_string = 0;
210 static char *prefix_alloc_sections_string = 0;
212 /* True if --extract-symbol was passed on the command line. */
213 static bfd_boolean extract_symbol = FALSE;
215 /* If `reverse_bytes' is nonzero, then reverse the order of every chunk
216 of <reverse_bytes> bytes within each output section. */
217 static int reverse_bytes = 0;
220 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
221 enum command_line_switch
223 OPTION_ADD_SECTION=150,
224 OPTION_CHANGE_ADDRESSES,
225 OPTION_CHANGE_LEADING_CHAR,
227 OPTION_CHANGE_SECTION_ADDRESS,
228 OPTION_CHANGE_SECTION_LMA,
229 OPTION_CHANGE_SECTION_VMA,
230 OPTION_CHANGE_WARNINGS,
233 OPTION_NO_CHANGE_WARNINGS,
235 OPTION_REMOVE_LEADING_CHAR,
236 OPTION_SET_SECTION_FLAGS,
238 OPTION_STRIP_UNNEEDED,
241 OPTION_REDEFINE_SYMS,
244 OPTION_STRIP_SYMBOLS,
245 OPTION_STRIP_UNNEEDED_SYMBOL,
246 OPTION_STRIP_UNNEEDED_SYMBOLS,
248 OPTION_LOCALIZE_HIDDEN,
249 OPTION_LOCALIZE_SYMBOLS,
250 OPTION_GLOBALIZE_SYMBOL,
251 OPTION_GLOBALIZE_SYMBOLS,
252 OPTION_KEEPGLOBAL_SYMBOLS,
253 OPTION_WEAKEN_SYMBOLS,
254 OPTION_RENAME_SECTION,
255 OPTION_ALT_MACH_CODE,
256 OPTION_PREFIX_SYMBOLS,
257 OPTION_PREFIX_SECTIONS,
258 OPTION_PREFIX_ALLOC_SECTIONS,
260 OPTION_ADD_GNU_DEBUGLINK,
261 OPTION_ONLY_KEEP_DEBUG,
262 OPTION_KEEP_FILE_SYMBOLS,
263 OPTION_READONLY_TEXT,
264 OPTION_WRITABLE_TEXT,
267 OPTION_EXTRACT_SYMBOL,
271 /* Options to handle if running as "strip". */
273 static struct option strip_options[] =
275 {"discard-all", no_argument, 0, 'x'},
276 {"discard-locals", no_argument, 0, 'X'},
277 {"format", required_argument, 0, 'F'}, /* Obsolete */
278 {"help", no_argument, 0, 'h'},
279 {"info", no_argument, 0, OPTION_FORMATS_INFO},
280 {"input-format", required_argument, 0, 'I'}, /* Obsolete */
281 {"input-target", required_argument, 0, 'I'},
282 {"keep-file-symbols", no_argument, 0, OPTION_KEEP_FILE_SYMBOLS},
283 {"keep-symbol", required_argument, 0, 'K'},
284 {"only-keep-debug", no_argument, 0, OPTION_ONLY_KEEP_DEBUG},
285 {"output-format", required_argument, 0, 'O'}, /* Obsolete */
286 {"output-target", required_argument, 0, 'O'},
287 {"output-file", required_argument, 0, 'o'},
288 {"preserve-dates", no_argument, 0, 'p'},
289 {"remove-section", required_argument, 0, 'R'},
290 {"strip-all", no_argument, 0, 's'},
291 {"strip-debug", no_argument, 0, 'S'},
292 {"strip-unneeded", no_argument, 0, OPTION_STRIP_UNNEEDED},
293 {"strip-symbol", required_argument, 0, 'N'},
294 {"target", required_argument, 0, 'F'},
295 {"verbose", no_argument, 0, 'v'},
296 {"version", no_argument, 0, 'V'},
297 {"wildcard", no_argument, 0, 'w'},
298 {0, no_argument, 0, 0}
301 /* Options to handle if running as "objcopy". */
303 static struct option copy_options[] =
305 {"add-gnu-debuglink", required_argument, 0, OPTION_ADD_GNU_DEBUGLINK},
306 {"add-section", required_argument, 0, OPTION_ADD_SECTION},
307 {"adjust-start", required_argument, 0, OPTION_CHANGE_START},
308 {"adjust-vma", required_argument, 0, OPTION_CHANGE_ADDRESSES},
309 {"adjust-section-vma", required_argument, 0, OPTION_CHANGE_SECTION_ADDRESS},
310 {"adjust-warnings", no_argument, 0, OPTION_CHANGE_WARNINGS},
311 {"alt-machine-code", required_argument, 0, OPTION_ALT_MACH_CODE},
312 {"binary-architecture", required_argument, 0, 'B'},
313 {"byte", required_argument, 0, 'b'},
314 {"change-addresses", required_argument, 0, OPTION_CHANGE_ADDRESSES},
315 {"change-leading-char", no_argument, 0, OPTION_CHANGE_LEADING_CHAR},
316 {"change-section-address", required_argument, 0, OPTION_CHANGE_SECTION_ADDRESS},
317 {"change-section-lma", required_argument, 0, OPTION_CHANGE_SECTION_LMA},
318 {"change-section-vma", required_argument, 0, OPTION_CHANGE_SECTION_VMA},
319 {"change-start", required_argument, 0, OPTION_CHANGE_START},
320 {"change-warnings", no_argument, 0, OPTION_CHANGE_WARNINGS},
321 {"debugging", no_argument, 0, OPTION_DEBUGGING},
322 {"discard-all", no_argument, 0, 'x'},
323 {"discard-locals", no_argument, 0, 'X'},
324 {"extract-symbol", no_argument, 0, OPTION_EXTRACT_SYMBOL},
325 {"format", required_argument, 0, 'F'}, /* Obsolete */
326 {"gap-fill", required_argument, 0, OPTION_GAP_FILL},
327 {"globalize-symbol", required_argument, 0, OPTION_GLOBALIZE_SYMBOL},
328 {"globalize-symbols", required_argument, 0, OPTION_GLOBALIZE_SYMBOLS},
329 {"help", no_argument, 0, 'h'},
330 {"impure", no_argument, 0, OPTION_IMPURE},
331 {"info", no_argument, 0, OPTION_FORMATS_INFO},
332 {"input-format", required_argument, 0, 'I'}, /* Obsolete */
333 {"input-target", required_argument, 0, 'I'},
334 {"interleave", required_argument, 0, 'i'},
335 {"keep-file-symbols", no_argument, 0, OPTION_KEEP_FILE_SYMBOLS},
336 {"keep-global-symbol", required_argument, 0, 'G'},
337 {"keep-global-symbols", required_argument, 0, OPTION_KEEPGLOBAL_SYMBOLS},
338 {"keep-symbol", required_argument, 0, 'K'},
339 {"keep-symbols", required_argument, 0, OPTION_KEEP_SYMBOLS},
340 {"localize-hidden", no_argument, 0, OPTION_LOCALIZE_HIDDEN},
341 {"localize-symbol", required_argument, 0, 'L'},
342 {"localize-symbols", required_argument, 0, OPTION_LOCALIZE_SYMBOLS},
343 {"no-adjust-warnings", no_argument, 0, OPTION_NO_CHANGE_WARNINGS},
344 {"no-change-warnings", no_argument, 0, OPTION_NO_CHANGE_WARNINGS},
345 {"only-keep-debug", no_argument, 0, OPTION_ONLY_KEEP_DEBUG},
346 {"only-section", required_argument, 0, 'j'},
347 {"output-format", required_argument, 0, 'O'}, /* Obsolete */
348 {"output-target", required_argument, 0, 'O'},
349 {"pad-to", required_argument, 0, OPTION_PAD_TO},
350 {"prefix-symbols", required_argument, 0, OPTION_PREFIX_SYMBOLS},
351 {"prefix-sections", required_argument, 0, OPTION_PREFIX_SECTIONS},
352 {"prefix-alloc-sections", required_argument, 0, OPTION_PREFIX_ALLOC_SECTIONS},
353 {"preserve-dates", no_argument, 0, 'p'},
354 {"pure", no_argument, 0, OPTION_PURE},
355 {"readonly-text", no_argument, 0, OPTION_READONLY_TEXT},
356 {"redefine-sym", required_argument, 0, OPTION_REDEFINE_SYM},
357 {"redefine-syms", required_argument, 0, OPTION_REDEFINE_SYMS},
358 {"remove-leading-char", no_argument, 0, OPTION_REMOVE_LEADING_CHAR},
359 {"remove-section", required_argument, 0, 'R'},
360 {"rename-section", required_argument, 0, OPTION_RENAME_SECTION},
361 {"reverse-bytes", required_argument, 0, OPTION_REVERSE_BYTES},
362 {"set-section-flags", required_argument, 0, OPTION_SET_SECTION_FLAGS},
363 {"set-start", required_argument, 0, OPTION_SET_START},
364 {"srec-len", required_argument, 0, OPTION_SREC_LEN},
365 {"srec-forceS3", no_argument, 0, OPTION_SREC_FORCES3},
366 {"strip-all", no_argument, 0, 'S'},
367 {"strip-debug", no_argument, 0, 'g'},
368 {"strip-unneeded", no_argument, 0, OPTION_STRIP_UNNEEDED},
369 {"strip-unneeded-symbol", required_argument, 0, OPTION_STRIP_UNNEEDED_SYMBOL},
370 {"strip-unneeded-symbols", required_argument, 0, OPTION_STRIP_UNNEEDED_SYMBOLS},
371 {"strip-symbol", required_argument, 0, 'N'},
372 {"strip-symbols", required_argument, 0, OPTION_STRIP_SYMBOLS},
373 {"target", required_argument, 0, 'F'},
374 {"verbose", no_argument, 0, 'v'},
375 {"version", no_argument, 0, 'V'},
376 {"weaken", no_argument, 0, OPTION_WEAKEN},
377 {"weaken-symbol", required_argument, 0, 'W'},
378 {"weaken-symbols", required_argument, 0, OPTION_WEAKEN_SYMBOLS},
379 {"wildcard", no_argument, 0, 'w'},
380 {"writable-text", no_argument, 0, OPTION_WRITABLE_TEXT},
381 {0, no_argument, 0, 0}
385 extern char *program_name;
387 /* This flag distinguishes between strip and objcopy:
388 1 means this is 'strip'; 0 means this is 'objcopy'.
389 -1 means if we should use argv[0] to decide. */
392 /* The maximum length of an S record. This variable is declared in srec.c
393 and can be modified by the --srec-len parameter. */
394 extern unsigned int Chunk;
396 /* Restrict the generation of Srecords to type S3 only.
397 This variable is declare in bfd/srec.c and can be toggled
398 on by the --srec-forceS3 command line switch. */
399 extern bfd_boolean S3Forced;
401 /* Defined in bfd/binary.c. Used to set architecture and machine of input
403 extern enum bfd_architecture bfd_external_binary_architecture;
404 extern unsigned long bfd_external_machine;
406 /* Forward declarations. */
407 static void setup_section (bfd *, asection *, void *);
408 static void setup_bfd_headers (bfd *, bfd *);
409 static void copy_section (bfd *, asection *, void *);
410 static void get_sections (bfd *, asection *, void *);
411 static int compare_section_lma (const void *, const void *);
412 static void mark_symbols_used_in_relocations (bfd *, asection *, void *);
413 static bfd_boolean write_debugging_info (bfd *, void *, long *, asymbol ***);
414 static const char *lookup_sym_redefinition (const char *);
417 copy_usage (FILE *stream, int exit_status)
419 fprintf (stream, _("Usage: %s [option(s)] in-file [out-file]\n"), program_name);
420 fprintf (stream, _(" Copies a binary file, possibly transforming it in the process\n"));
421 fprintf (stream, _(" The options are:\n"));
422 fprintf (stream, _("\
423 -I --input-target <bfdname> Assume input file is in format <bfdname>\n\
424 -O --output-target <bfdname> Create an output file in format <bfdname>\n\
425 -B --binary-architecture <arch> Set arch of output file, when input is binary\n\
426 -F --target <bfdname> Set both input and output format to <bfdname>\n\
427 --debugging Convert debugging information, if possible\n\
428 -p --preserve-dates Copy modified/access timestamps to the output\n\
429 -j --only-section <name> Only copy section <name> into the output\n\
430 --add-gnu-debuglink=<file> Add section .gnu_debuglink linking to <file>\n\
431 -R --remove-section <name> Remove section <name> from the output\n\
432 -S --strip-all Remove all symbol and relocation information\n\
433 -g --strip-debug Remove all debugging symbols & sections\n\
434 --strip-unneeded Remove all symbols not needed by relocations\n\
435 -N --strip-symbol <name> Do not copy symbol <name>\n\
436 --strip-unneeded-symbol <name>\n\
437 Do not copy symbol <name> unless needed by\n\
439 --only-keep-debug Strip everything but the debug information\n\
440 --extract-symbol Remove section contents but keep symbols\n\
441 -K --keep-symbol <name> Do not strip symbol <name>\n\
442 --keep-file-symbols Do not strip file symbol(s)\n\
443 --localize-hidden Turn all ELF hidden symbols into locals\n\
444 -L --localize-symbol <name> Force symbol <name> to be marked as a local\n\
445 --globalize-symbol <name> Force symbol <name> to be marked as a global\n\
446 -G --keep-global-symbol <name> Localize all symbols except <name>\n\
447 -W --weaken-symbol <name> Force symbol <name> to be marked as a weak\n\
448 --weaken Force all global symbols to be marked as weak\n\
449 -w --wildcard Permit wildcard in symbol comparison\n\
450 -x --discard-all Remove all non-global symbols\n\
451 -X --discard-locals Remove any compiler-generated symbols\n\
452 -i --interleave <number> Only copy one out of every <number> bytes\n\
453 -b --byte <num> Select byte <num> in every interleaved block\n\
454 --gap-fill <val> Fill gaps between sections with <val>\n\
455 --pad-to <addr> Pad the last section up to address <addr>\n\
456 --set-start <addr> Set the start address to <addr>\n\
457 {--change-start|--adjust-start} <incr>\n\
458 Add <incr> to the start address\n\
459 {--change-addresses|--adjust-vma} <incr>\n\
460 Add <incr> to LMA, VMA and start addresses\n\
461 {--change-section-address|--adjust-section-vma} <name>{=|+|-}<val>\n\
462 Change LMA and VMA of section <name> by <val>\n\
463 --change-section-lma <name>{=|+|-}<val>\n\
464 Change the LMA of section <name> by <val>\n\
465 --change-section-vma <name>{=|+|-}<val>\n\
466 Change the VMA of section <name> by <val>\n\
467 {--[no-]change-warnings|--[no-]adjust-warnings}\n\
468 Warn if a named section does not exist\n\
469 --set-section-flags <name>=<flags>\n\
470 Set section <name>'s properties to <flags>\n\
471 --add-section <name>=<file> Add section <name> found in <file> to output\n\
472 --rename-section <old>=<new>[,<flags>] Rename section <old> to <new>\n\
473 --change-leading-char Force output format's leading character style\n\
474 --remove-leading-char Remove leading character from global symbols\n\
475 --reverse-bytes=<num> Reverse <num> bytes at a time, in output sections with content\n\
476 --redefine-sym <old>=<new> Redefine symbol name <old> to <new>\n\
477 --redefine-syms <file> --redefine-sym for all symbol pairs \n\
479 --srec-len <number> Restrict the length of generated Srecords\n\
480 --srec-forceS3 Restrict the type of generated Srecords to S3\n\
481 --strip-symbols <file> -N for all symbols listed in <file>\n\
482 --strip-unneeded-symbols <file>\n\
483 --strip-unneeded-symbol for all symbols listed\n\
485 --keep-symbols <file> -K for all symbols listed in <file>\n\
486 --localize-symbols <file> -L for all symbols listed in <file>\n\
487 --globalize-symbols <file> --globalize-symbol for all in <file>\n\
488 --keep-global-symbols <file> -G for all symbols listed in <file>\n\
489 --weaken-symbols <file> -W for all symbols listed in <file>\n\
490 --alt-machine-code <index> Use the target's <index>'th alternative machine\n\
491 --writable-text Mark the output text as writable\n\
492 --readonly-text Make the output text write protected\n\
493 --pure Mark the output file as demand paged\n\
494 --impure Mark the output file as impure\n\
495 --prefix-symbols <prefix> Add <prefix> to start of every symbol name\n\
496 --prefix-sections <prefix> Add <prefix> to start of every section name\n\
497 --prefix-alloc-sections <prefix>\n\
498 Add <prefix> to start of every allocatable\n\
500 -v --verbose List all object files modified\n\
501 @<file> Read options from <file>\n\
502 -V --version Display this program's version number\n\
503 -h --help Display this output\n\
504 --info List object formats & architectures supported\n\
506 list_supported_targets (program_name, stream);
507 if (REPORT_BUGS_TO[0] && exit_status == 0)
508 fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
513 strip_usage (FILE *stream, int exit_status)
515 fprintf (stream, _("Usage: %s <option(s)> in-file(s)\n"), program_name);
516 fprintf (stream, _(" Removes symbols and sections from files\n"));
517 fprintf (stream, _(" The options are:\n"));
518 fprintf (stream, _("\
519 -I --input-target=<bfdname> Assume input file is in format <bfdname>\n\
520 -O --output-target=<bfdname> Create an output file in format <bfdname>\n\
521 -F --target=<bfdname> Set both input and output format to <bfdname>\n\
522 -p --preserve-dates Copy modified/access timestamps to the output\n\
523 -R --remove-section=<name> Remove section <name> from the output\n\
524 -s --strip-all Remove all symbol and relocation information\n\
525 -g -S -d --strip-debug Remove all debugging symbols & sections\n\
526 --strip-unneeded Remove all symbols not needed by relocations\n\
527 --only-keep-debug Strip everything but the debug information\n\
528 -N --strip-symbol=<name> Do not copy symbol <name>\n\
529 -K --keep-symbol=<name> Do not strip symbol <name>\n\
530 --keep-file-symbols Do not strip file symbol(s)\n\
531 -w --wildcard Permit wildcard in symbol comparison\n\
532 -x --discard-all Remove all non-global symbols\n\
533 -X --discard-locals Remove any compiler-generated symbols\n\
534 -v --verbose List all object files modified\n\
535 -V --version Display this program's version number\n\
536 -h --help Display this output\n\
537 --info List object formats & architectures supported\n\
538 -o <file> Place stripped output into <file>\n\
541 list_supported_targets (program_name, stream);
542 if (REPORT_BUGS_TO[0] && exit_status == 0)
543 fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
547 /* Parse section flags into a flagword, with a fatal error if the
548 string can't be parsed. */
551 parse_flags (const char *s)
561 snext = strchr (s, ',');
571 #define PARSE_FLAG(fname,fval) \
572 else if (strncasecmp (fname, s, len) == 0) ret |= fval
573 PARSE_FLAG ("alloc", SEC_ALLOC);
574 PARSE_FLAG ("load", SEC_LOAD);
575 PARSE_FLAG ("noload", SEC_NEVER_LOAD);
576 PARSE_FLAG ("readonly", SEC_READONLY);
577 PARSE_FLAG ("debug", SEC_DEBUGGING);
578 PARSE_FLAG ("code", SEC_CODE);
579 PARSE_FLAG ("data", SEC_DATA);
580 PARSE_FLAG ("rom", SEC_ROM);
581 PARSE_FLAG ("share", SEC_COFF_SHARED);
582 PARSE_FLAG ("contents", SEC_HAS_CONTENTS);
588 copy = xmalloc (len + 1);
589 strncpy (copy, s, len);
591 non_fatal (_("unrecognized section flag `%s'"), copy);
592 fatal (_("supported flags: %s"),
593 "alloc, load, noload, readonly, debug, code, data, rom, share, contents");
603 /* Find and optionally add an entry in the change_sections list. */
605 static struct section_list *
606 find_section_list (const char *name, bfd_boolean add)
608 struct section_list *p;
610 for (p = change_sections; p != NULL; p = p->next)
611 if (strcmp (p->name, name) == 0)
617 p = xmalloc (sizeof (struct section_list));
622 p->change_vma = CHANGE_IGNORE;
623 p->change_lma = CHANGE_IGNORE;
626 p->set_flags = FALSE;
629 p->next = change_sections;
635 /* There is htab_hash_string but no htab_eq_string. Makes sense. */
638 eq_string (const void *s1, const void *s2)
640 return strcmp (s1, s2) == 0;
644 create_symbol_htab (void)
646 return htab_create_alloc (16, htab_hash_string, eq_string, NULL, xcalloc, free);
650 create_symbol_htabs (void)
652 strip_specific_htab = create_symbol_htab ();
653 strip_unneeded_htab = create_symbol_htab ();
654 keep_specific_htab = create_symbol_htab ();
655 localize_specific_htab = create_symbol_htab ();
656 globalize_specific_htab = create_symbol_htab ();
657 keepglobal_specific_htab = create_symbol_htab ();
658 weaken_specific_htab = create_symbol_htab ();
661 /* Add a symbol to strip_specific_list. */
664 add_specific_symbol (const char *name, htab_t htab)
666 *htab_find_slot (htab, name, INSERT) = (char *) name;
669 /* Add symbols listed in `filename' to strip_specific_list. */
671 #define IS_WHITESPACE(c) ((c) == ' ' || (c) == '\t')
672 #define IS_LINE_TERMINATOR(c) ((c) == '\n' || (c) == '\r' || (c) == '\0')
675 add_specific_symbols (const char *filename, htab_t htab)
681 unsigned int line_count;
683 size = get_file_size (filename);
690 buffer = xmalloc (size + 2);
691 f = fopen (filename, FOPEN_RT);
693 fatal (_("cannot open '%s': %s"), filename, strerror (errno));
695 if (fread (buffer, 1, size, f) == 0 || ferror (f))
696 fatal (_("%s: fread failed"), filename);
699 buffer [size] = '\n';
700 buffer [size + 1] = '\0';
704 for (line = buffer; * line != '\0'; line ++)
709 int finished = FALSE;
711 for (eol = line;; eol ++)
717 /* Cope with \n\r. */
725 /* Cope with \r\n. */
736 /* Line comment, Terminate the line here, in case a
737 name is present and then allow the rest of the
738 loop to find the real end of the line. */
750 /* A name may now exist somewhere between 'line' and 'eol'.
751 Strip off leading whitespace and trailing whitespace,
752 then add it to the list. */
753 for (name = line; IS_WHITESPACE (* name); name ++)
755 for (name_end = name;
756 (! IS_WHITESPACE (* name_end))
757 && (! IS_LINE_TERMINATOR (* name_end));
761 if (! IS_LINE_TERMINATOR (* name_end))
765 for (extra = name_end + 1; IS_WHITESPACE (* extra); extra ++)
768 if (! IS_LINE_TERMINATOR (* extra))
769 non_fatal (_("%s:%d: Ignoring rubbish found on this line"),
770 filename, line_count);
776 add_specific_symbol (name, htab);
778 /* Advance line pointer to end of line. The 'eol ++' in the for
779 loop above will then advance us to the start of the next line. */
785 /* See whether a symbol should be stripped or kept
786 based on strip_specific_list and keep_symbols. */
789 is_specified_symbol_predicate (void **slot, void *data)
791 struct is_specified_symbol_predicate_data *d = data;
792 const char *slot_name = *slot;
794 if (*slot_name != '!')
796 if (! fnmatch (slot_name, d->name, 0))
799 /* Stop traversal. */
805 if (fnmatch (slot_name + 1, d->name, 0))
808 /* Stop traversal. */
813 /* Continue traversal. */
818 is_specified_symbol (const char *name, htab_t htab)
822 struct is_specified_symbol_predicate_data data;
827 htab_traverse (htab, is_specified_symbol_predicate, &data);
832 return htab_find (htab, name) != NULL;
835 /* Return a pointer to the symbol used as a signature for GROUP. */
838 group_signature (asection *group)
840 bfd *abfd = group->owner;
841 Elf_Internal_Shdr *ghdr;
843 if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
846 ghdr = &elf_section_data (group)->this_hdr;
847 if (ghdr->sh_link < elf_numsections (abfd))
849 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
850 Elf_Internal_Shdr *symhdr = elf_elfsections (abfd) [ghdr->sh_link];
852 if (symhdr->sh_type == SHT_SYMTAB
853 && ghdr->sh_info < symhdr->sh_size / bed->s->sizeof_sym)
854 return isympp[ghdr->sh_info - 1];
859 /* See if a section is being removed. */
862 is_strip_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
864 if (sections_removed || sections_copied)
866 struct section_list *p;
868 p = find_section_list (bfd_get_section_name (abfd, sec), FALSE);
870 if (sections_removed && p != NULL && p->remove)
872 if (sections_copied && (p == NULL || ! p->copy))
876 if ((bfd_get_section_flags (abfd, sec) & SEC_DEBUGGING) != 0)
878 if (strip_symbols == STRIP_DEBUG
879 || strip_symbols == STRIP_UNNEEDED
880 || strip_symbols == STRIP_ALL
881 || discard_locals == LOCALS_ALL
882 || convert_debugging)
885 if (strip_symbols == STRIP_NONDEBUG)
889 if ((bfd_get_section_flags (abfd, sec) & SEC_GROUP) != 0)
895 Group sections look like debugging sections but they are not.
896 (They have a non-zero size but they are not ALLOCated). */
897 if (strip_symbols == STRIP_NONDEBUG)
901 If we are going to strip the group signature symbol, then
902 strip the group section too. */
903 gsym = group_signature (sec);
908 if ((strip_symbols == STRIP_ALL
909 && !is_specified_symbol (gname, keep_specific_htab))
910 || is_specified_symbol (gname, strip_specific_htab))
917 /* Return true if SYM is a hidden symbol. */
920 is_hidden_symbol (asymbol *sym)
922 elf_symbol_type *elf_sym;
924 elf_sym = elf_symbol_from (sym->the_bfd, sym);
926 switch (ELF_ST_VISIBILITY (elf_sym->internal_elf_sym.st_other))
935 /* Choose which symbol entries to copy; put the result in OSYMS.
936 We don't copy in place, because that confuses the relocs.
937 Return the number of symbols to print. */
940 filter_symbols (bfd *abfd, bfd *obfd, asymbol **osyms,
941 asymbol **isyms, long symcount)
943 asymbol **from = isyms, **to = osyms;
944 long src_count = 0, dst_count = 0;
945 int relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
947 for (; src_count < symcount; src_count++)
949 asymbol *sym = from[src_count];
950 flagword flags = sym->flags;
951 char *name = (char *) bfd_asymbol_name (sym);
953 bfd_boolean used_in_reloc = FALSE;
954 bfd_boolean undefined;
955 bfd_boolean rem_leading_char;
956 bfd_boolean add_leading_char;
958 undefined = bfd_is_und_section (bfd_get_section (sym));
960 if (redefine_sym_list)
962 char *old_name, *new_name;
964 old_name = (char *) bfd_asymbol_name (sym);
965 new_name = (char *) lookup_sym_redefinition (old_name);
966 bfd_asymbol_name (sym) = new_name;
970 /* Check if we will remove the current leading character. */
972 (name[0] == bfd_get_symbol_leading_char (abfd))
973 && (change_leading_char
974 || (remove_leading_char
975 && ((flags & (BSF_GLOBAL | BSF_WEAK)) != 0
977 || bfd_is_com_section (bfd_get_section (sym)))));
979 /* Check if we will add a new leading character. */
982 && (bfd_get_symbol_leading_char (obfd) != '\0')
983 && (bfd_get_symbol_leading_char (abfd) == '\0'
984 || (name[0] == bfd_get_symbol_leading_char (abfd)));
986 /* Short circuit for change_leading_char if we can do it in-place. */
987 if (rem_leading_char && add_leading_char && !prefix_symbols_string)
989 name[0] = bfd_get_symbol_leading_char (obfd);
990 bfd_asymbol_name (sym) = name;
991 rem_leading_char = FALSE;
992 add_leading_char = FALSE;
995 /* Remove leading char. */
996 if (rem_leading_char)
997 bfd_asymbol_name (sym) = ++name;
999 /* Add new leading char and/or prefix. */
1000 if (add_leading_char || prefix_symbols_string)
1004 ptr = n = xmalloc (1 + strlen (prefix_symbols_string)
1005 + strlen (name) + 1);
1006 if (add_leading_char)
1007 *ptr++ = bfd_get_symbol_leading_char (obfd);
1009 if (prefix_symbols_string)
1011 strcpy (ptr, prefix_symbols_string);
1012 ptr += strlen (prefix_symbols_string);
1016 bfd_asymbol_name (sym) = n;
1020 if (strip_symbols == STRIP_ALL)
1022 else if ((flags & BSF_KEEP) != 0 /* Used in relocation. */
1023 || ((flags & BSF_SECTION_SYM) != 0
1024 && ((*bfd_get_section (sym)->symbol_ptr_ptr)->flags
1028 used_in_reloc = TRUE;
1030 else if (relocatable /* Relocatable file. */
1031 && ((flags & (BSF_GLOBAL | BSF_WEAK)) != 0
1032 || bfd_is_com_section (bfd_get_section (sym))))
1034 else if (bfd_decode_symclass (sym) == 'I')
1035 /* Global symbols in $idata sections need to be retained
1036 even if relocatable is FALSE. External users of the
1037 library containing the $idata section may reference these
1040 else if ((flags & BSF_GLOBAL) != 0 /* Global symbol. */
1041 || (flags & BSF_WEAK) != 0
1043 || bfd_is_com_section (bfd_get_section (sym)))
1044 keep = strip_symbols != STRIP_UNNEEDED;
1045 else if ((flags & BSF_DEBUGGING) != 0) /* Debugging symbol. */
1046 keep = (strip_symbols != STRIP_DEBUG
1047 && strip_symbols != STRIP_UNNEEDED
1048 && ! convert_debugging);
1049 else if (bfd_coff_get_comdat_section (abfd, bfd_get_section (sym)))
1050 /* COMDAT sections store special information in local
1051 symbols, so we cannot risk stripping any of them. */
1053 else /* Local symbol. */
1054 keep = (strip_symbols != STRIP_UNNEEDED
1055 && (discard_locals != LOCALS_ALL
1056 && (discard_locals != LOCALS_START_L
1057 || ! bfd_is_local_label (abfd, sym))));
1059 if (keep && is_specified_symbol (name, strip_specific_htab))
1061 /* There are multiple ways to set 'keep' above, but if it
1062 was the relocatable symbol case, then that's an error. */
1065 non_fatal (_("not stripping symbol `%s' because it is named in a relocation"), name);
1073 && !(flags & BSF_KEEP)
1074 && is_specified_symbol (name, strip_unneeded_htab))
1078 && ((keep_file_symbols && (flags & BSF_FILE))
1079 || is_specified_symbol (name, keep_specific_htab)))
1082 if (keep && is_strip_section (abfd, bfd_get_section (sym)))
1087 if ((flags & BSF_GLOBAL) != 0
1088 && (weaken || is_specified_symbol (name, weaken_specific_htab)))
1090 sym->flags &= ~ BSF_GLOBAL;
1091 sym->flags |= BSF_WEAK;
1095 && (flags & (BSF_GLOBAL | BSF_WEAK))
1096 && (is_specified_symbol (name, localize_specific_htab)
1097 || (htab_elements (keepglobal_specific_htab) != 0
1098 && ! is_specified_symbol (name, keepglobal_specific_htab))
1099 || (localize_hidden && is_hidden_symbol (sym))))
1101 sym->flags &= ~ (BSF_GLOBAL | BSF_WEAK);
1102 sym->flags |= BSF_LOCAL;
1106 && (flags & BSF_LOCAL)
1107 && is_specified_symbol (name, globalize_specific_htab))
1109 sym->flags &= ~ BSF_LOCAL;
1110 sym->flags |= BSF_GLOBAL;
1113 to[dst_count++] = sym;
1117 to[dst_count] = NULL;
1122 /* Find the redefined name of symbol SOURCE. */
1125 lookup_sym_redefinition (const char *source)
1127 struct redefine_node *list;
1129 for (list = redefine_sym_list; list != NULL; list = list->next)
1130 if (strcmp (source, list->source) == 0)
1131 return list->target;
1136 /* Add a node to a symbol redefine list. */
1139 redefine_list_append (const char *cause, const char *source, const char *target)
1141 struct redefine_node **p;
1142 struct redefine_node *list;
1143 struct redefine_node *new_node;
1145 for (p = &redefine_sym_list; (list = *p) != NULL; p = &list->next)
1147 if (strcmp (source, list->source) == 0)
1148 fatal (_("%s: Multiple redefinition of symbol \"%s\""),
1151 if (strcmp (target, list->target) == 0)
1152 fatal (_("%s: Symbol \"%s\" is target of more than one redefinition"),
1156 new_node = xmalloc (sizeof (struct redefine_node));
1158 new_node->source = strdup (source);
1159 new_node->target = strdup (target);
1160 new_node->next = NULL;
1165 /* Handle the --redefine-syms option. Read lines containing "old new"
1166 from the file, and add them to the symbol redefine list. */
1169 add_redefine_syms_file (const char *filename)
1178 file = fopen (filename, "r");
1180 fatal (_("couldn't open symbol redefinition file %s (error: %s)"),
1181 filename, strerror (errno));
1184 buf = xmalloc (bufsize);
1192 /* Collect the input symbol name. */
1193 while (! IS_WHITESPACE (c) && ! IS_LINE_TERMINATOR (c) && c != EOF)
1201 buf = xrealloc (buf, bufsize);
1209 /* Eat white space between the symbol names. */
1210 while (IS_WHITESPACE (c))
1212 if (c == '#' || IS_LINE_TERMINATOR (c))
1217 /* Collect the output symbol name. */
1219 while (! IS_WHITESPACE (c) && ! IS_LINE_TERMINATOR (c) && c != EOF)
1227 buf = xrealloc (buf, bufsize);
1235 /* Eat white space at end of line. */
1236 while (! IS_LINE_TERMINATOR(c) && c != EOF && IS_WHITESPACE (c))
1241 if ((c == '\r' && (c = getc (file)) == '\n')
1242 || c == '\n' || c == EOF)
1245 /* Append the redefinition to the list. */
1247 redefine_list_append (filename, &buf[0], &buf[outsym_off]);
1258 fatal (_("%s:%d: garbage found at end of line"), filename, lineno);
1260 if (len != 0 && (outsym_off == 0 || outsym_off == len))
1261 fatal (_("%s:%d: missing new symbol name"), filename, lineno);
1264 /* Eat the rest of the line and finish it. */
1265 while (c != '\n' && c != EOF)
1271 fatal (_("%s:%d: premature end of file"), filename, lineno);
1276 /* Copy unkown object file IBFD onto OBFD.
1277 Returns TRUE upon success, FALSE otherwise. */
1280 copy_unknown_object (bfd *ibfd, bfd *obfd)
1288 if (bfd_stat_arch_elt (ibfd, &buf) != 0)
1290 bfd_nonfatal_message (NULL, ibfd, NULL, NULL);
1297 non_fatal (_("stat returns negative size for `%s'"),
1298 bfd_get_archive_filename (ibfd));
1302 if (bfd_seek (ibfd, (file_ptr) 0, SEEK_SET) != 0)
1304 bfd_nonfatal (bfd_get_archive_filename (ibfd));
1309 printf (_("copy from `%s' [unknown] to `%s' [unknown]\n"),
1310 bfd_get_archive_filename (ibfd), bfd_get_filename (obfd));
1312 cbuf = xmalloc (BUFSIZE);
1314 while (ncopied < size)
1316 tocopy = size - ncopied;
1317 if (tocopy > BUFSIZE)
1320 if (bfd_bread (cbuf, (bfd_size_type) tocopy, ibfd)
1321 != (bfd_size_type) tocopy)
1323 bfd_nonfatal_message (NULL, ibfd, NULL, NULL);
1328 if (bfd_bwrite (cbuf, (bfd_size_type) tocopy, obfd)
1329 != (bfd_size_type) tocopy)
1331 bfd_nonfatal_message (NULL, obfd, NULL, NULL);
1339 chmod (bfd_get_filename (obfd), buf.st_mode);
1344 /* Copy object file IBFD onto OBFD.
1345 Returns TRUE upon success, FALSE otherwise. */
1348 copy_object (bfd *ibfd, bfd *obfd)
1352 asection **osections = NULL;
1353 asection *gnu_debuglink_section = NULL;
1354 bfd_size_type *gaps = NULL;
1355 bfd_size_type max_gap = 0;
1358 enum bfd_architecture iarch;
1361 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
1362 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
1363 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
1364 fatal (_("Unable to change endianness of input file(s)"));
1366 if (!bfd_set_format (obfd, bfd_get_format (ibfd)))
1368 bfd_nonfatal_message (NULL, obfd, NULL, NULL);
1373 printf (_("copy from `%s' [%s] to `%s' [%s]\n"),
1374 bfd_get_archive_filename (ibfd), bfd_get_target (ibfd),
1375 bfd_get_filename (obfd), bfd_get_target (obfd));
1384 start = bfd_get_start_address (ibfd);
1385 start += change_start;
1388 /* Neither the start address nor the flags
1389 need to be set for a core file. */
1390 if (bfd_get_format (obfd) != bfd_core)
1394 flags = bfd_get_file_flags (ibfd);
1395 flags |= bfd_flags_to_set;
1396 flags &= ~bfd_flags_to_clear;
1397 flags &= bfd_applicable_file_flags (obfd);
1399 if (strip_symbols == STRIP_ALL)
1400 flags &= ~HAS_RELOC;
1402 if (!bfd_set_start_address (obfd, start)
1403 || !bfd_set_file_flags (obfd, flags))
1405 bfd_nonfatal_message (NULL, ibfd, NULL, NULL);
1410 /* Copy architecture of input file to output file. */
1411 iarch = bfd_get_arch (ibfd);
1412 imach = bfd_get_mach (ibfd);
1413 if (!bfd_set_arch_mach (obfd, iarch, imach)
1414 && (ibfd->target_defaulted
1415 || bfd_get_arch (ibfd) != bfd_get_arch (obfd)))
1417 if (bfd_get_arch (ibfd) == bfd_arch_unknown)
1418 non_fatal (_("Unable to recognise the format of the input file `%s'"),
1419 bfd_get_archive_filename (ibfd));
1421 non_fatal (_("Warning: Output file cannot represent architecture `%s'"),
1422 bfd_printable_arch_mach (bfd_get_arch (ibfd),
1423 bfd_get_mach (ibfd)));
1427 if (!bfd_set_format (obfd, bfd_get_format (ibfd)))
1429 bfd_nonfatal_message (NULL, ibfd, NULL, NULL);
1436 if (osympp != isympp)
1442 symsize = bfd_get_symtab_upper_bound (ibfd);
1445 bfd_nonfatal_message (NULL, ibfd, NULL, NULL);
1449 osympp = isympp = xmalloc (symsize);
1450 symcount = bfd_canonicalize_symtab (ibfd, isympp);
1453 bfd_nonfatal_message (NULL, ibfd, NULL, NULL);
1457 /* BFD mandates that all output sections be created and sizes set before
1458 any output is done. Thus, we traverse all sections multiple times. */
1459 bfd_map_over_sections (ibfd, setup_section, obfd);
1461 if (!extract_symbol)
1462 setup_bfd_headers (ibfd, obfd);
1464 if (add_sections != NULL)
1466 struct section_add *padd;
1467 struct section_list *pset;
1469 for (padd = add_sections; padd != NULL; padd = padd->next)
1473 pset = find_section_list (padd->name, FALSE);
1477 flags = SEC_HAS_CONTENTS | SEC_READONLY | SEC_DATA;
1478 if (pset != NULL && pset->set_flags)
1479 flags = pset->flags | SEC_HAS_CONTENTS;
1481 /* bfd_make_section_with_flags() does not return very helpful
1482 error codes, so check for the most likely user error first. */
1483 if (bfd_get_section_by_name (obfd, padd->name))
1485 bfd_nonfatal_message (NULL, obfd, NULL,
1486 _("can't add section '%s'"), padd->name);
1491 padd->section = bfd_make_section_with_flags (obfd, padd->name, flags);
1492 if (padd->section == NULL)
1494 bfd_nonfatal_message (NULL, obfd, NULL,
1495 _("can't create section `%s'"),
1501 if (! bfd_set_section_size (obfd, padd->section, padd->size))
1503 bfd_nonfatal_message (NULL, obfd, padd->section, NULL);
1509 if (pset->change_vma != CHANGE_IGNORE)
1510 if (! bfd_set_section_vma (obfd, padd->section,
1513 bfd_nonfatal_message (NULL, obfd, padd->section, NULL);
1517 if (pset->change_lma != CHANGE_IGNORE)
1519 padd->section->lma = pset->lma_val;
1521 if (! bfd_set_section_alignment
1522 (obfd, padd->section,
1523 bfd_section_alignment (obfd, padd->section)))
1525 bfd_nonfatal_message (NULL, obfd, padd->section, NULL);
1533 if (gnu_debuglink_filename != NULL)
1535 gnu_debuglink_section = bfd_create_gnu_debuglink_section
1536 (obfd, gnu_debuglink_filename);
1538 if (gnu_debuglink_section == NULL)
1540 bfd_nonfatal_message (NULL, obfd, NULL,
1541 _("cannot create debug link section `%s'"),
1542 gnu_debuglink_filename);
1546 /* Special processing for PE format files. We
1547 have no way to distinguish PE from COFF here. */
1548 if (bfd_get_flavour (obfd) == bfd_target_coff_flavour)
1550 bfd_vma debuglink_vma;
1551 asection * highest_section;
1554 /* The PE spec requires that all sections be adjacent and sorted
1555 in ascending order of VMA. It also specifies that debug
1556 sections should be last. This is despite the fact that debug
1557 sections are not loaded into memory and so in theory have no
1560 This means that the debuglink section must be given a non-zero
1561 VMA which makes it contiguous with other debug sections. So
1562 walk the current section list, find the section with the
1563 highest VMA and start the debuglink section after that one. */
1564 for (sec = obfd->sections, highest_section = NULL;
1568 && (highest_section == NULL
1569 || sec->vma > highest_section->vma))
1570 highest_section = sec;
1572 if (highest_section)
1573 debuglink_vma = BFD_ALIGN (highest_section->vma
1574 + highest_section->size,
1575 /* FIXME: We ought to be using
1576 COFF_PAGE_SIZE here or maybe
1577 bfd_get_section_alignment() (if it
1578 was set) but since this is for PE
1579 and we know the required alignment
1580 it is easier just to hard code it. */
1583 /* Umm, not sure what to do in this case. */
1584 debuglink_vma = 0x1000;
1586 bfd_set_section_vma (obfd, gnu_debuglink_section, debuglink_vma);
1590 if (bfd_count_sections (obfd) != 0
1591 && (gap_fill_set || pad_to_set))
1596 /* We must fill in gaps between the sections and/or we must pad
1597 the last section to a specified address. We do this by
1598 grabbing a list of the sections, sorting them by VMA, and
1599 increasing the section sizes as required to fill the gaps.
1600 We write out the gap contents below. */
1602 c = bfd_count_sections (obfd);
1603 osections = xmalloc (c * sizeof (asection *));
1605 bfd_map_over_sections (obfd, get_sections, &set);
1607 qsort (osections, c, sizeof (asection *), compare_section_lma);
1609 gaps = xmalloc (c * sizeof (bfd_size_type));
1610 memset (gaps, 0, c * sizeof (bfd_size_type));
1614 for (i = 0; i < c - 1; i++)
1618 bfd_vma gap_start, gap_stop;
1620 flags = bfd_get_section_flags (obfd, osections[i]);
1621 if ((flags & SEC_HAS_CONTENTS) == 0
1622 || (flags & SEC_LOAD) == 0)
1625 size = bfd_section_size (obfd, osections[i]);
1626 gap_start = bfd_section_lma (obfd, osections[i]) + size;
1627 gap_stop = bfd_section_lma (obfd, osections[i + 1]);
1628 if (gap_start < gap_stop)
1630 if (! bfd_set_section_size (obfd, osections[i],
1631 size + (gap_stop - gap_start)))
1633 bfd_nonfatal_message (NULL, obfd, osections[i],
1634 _("Can't fill gap after section"));
1638 gaps[i] = gap_stop - gap_start;
1639 if (max_gap < gap_stop - gap_start)
1640 max_gap = gap_stop - gap_start;
1650 lma = bfd_section_lma (obfd, osections[c - 1]);
1651 size = bfd_section_size (obfd, osections[c - 1]);
1652 if (lma + size < pad_to)
1654 if (! bfd_set_section_size (obfd, osections[c - 1],
1657 bfd_nonfatal_message (NULL, obfd, osections[c - 1],
1658 _("can't add padding"));
1663 gaps[c - 1] = pad_to - (lma + size);
1664 if (max_gap < pad_to - (lma + size))
1665 max_gap = pad_to - (lma + size);
1671 /* Symbol filtering must happen after the output sections
1672 have been created, but before their contents are set. */
1674 if (convert_debugging)
1675 dhandle = read_debugging_info (ibfd, isympp, symcount, FALSE);
1677 if (strip_symbols == STRIP_DEBUG
1678 || strip_symbols == STRIP_ALL
1679 || strip_symbols == STRIP_UNNEEDED
1680 || strip_symbols == STRIP_NONDEBUG
1681 || discard_locals != LOCALS_UNDEF
1683 || htab_elements (strip_specific_htab) != 0
1684 || htab_elements (keep_specific_htab) != 0
1685 || htab_elements (localize_specific_htab) != 0
1686 || htab_elements (globalize_specific_htab) != 0
1687 || htab_elements (keepglobal_specific_htab) != 0
1688 || htab_elements (weaken_specific_htab) != 0
1689 || prefix_symbols_string
1692 || convert_debugging
1693 || change_leading_char
1694 || remove_leading_char
1695 || redefine_sym_list
1698 /* Mark symbols used in output relocations so that they
1699 are kept, even if they are local labels or static symbols.
1701 Note we iterate over the input sections examining their
1702 relocations since the relocations for the output sections
1703 haven't been set yet. mark_symbols_used_in_relocations will
1704 ignore input sections which have no corresponding output
1706 if (strip_symbols != STRIP_ALL)
1707 bfd_map_over_sections (ibfd,
1708 mark_symbols_used_in_relocations,
1710 osympp = xmalloc ((symcount + 1) * sizeof (asymbol *));
1711 symcount = filter_symbols (ibfd, obfd, osympp, isympp, symcount);
1714 if (convert_debugging && dhandle != NULL)
1716 if (! write_debugging_info (obfd, dhandle, &symcount, &osympp))
1723 bfd_set_symtab (obfd, osympp, symcount);
1725 /* This has to happen after the symbol table has been set. */
1726 bfd_map_over_sections (ibfd, copy_section, obfd);
1728 if (add_sections != NULL)
1730 struct section_add *padd;
1732 for (padd = add_sections; padd != NULL; padd = padd->next)
1734 if (! bfd_set_section_contents (obfd, padd->section, padd->contents,
1737 bfd_nonfatal_message (NULL, obfd, padd->section, NULL);
1743 if (gnu_debuglink_filename != NULL)
1745 if (! bfd_fill_in_gnu_debuglink_section
1746 (obfd, gnu_debuglink_section, gnu_debuglink_filename))
1748 bfd_nonfatal_message (NULL, obfd, NULL,
1749 _("cannot fill debug link section `%s'"),
1750 gnu_debuglink_filename);
1755 if (gap_fill_set || pad_to_set)
1760 /* Fill in the gaps. */
1763 buf = xmalloc (max_gap);
1764 memset (buf, gap_fill, max_gap);
1766 c = bfd_count_sections (obfd);
1767 for (i = 0; i < c; i++)
1775 off = bfd_section_size (obfd, osections[i]) - left;
1786 if (! bfd_set_section_contents (obfd, osections[i], buf,
1789 bfd_nonfatal_message (NULL, obfd, osections[i], NULL);
1800 /* Do not copy backend data if --extract-symbol is passed; anything
1801 that needs to look at the section contents will fail. */
1805 /* Allow the BFD backend to copy any private data it understands
1806 from the input BFD to the output BFD. This is done last to
1807 permit the routine to look at the filtered symbol table, which is
1808 important for the ECOFF code at least. */
1809 if (! bfd_copy_private_bfd_data (ibfd, obfd))
1811 bfd_nonfatal_message (NULL, obfd, NULL,
1812 _("error copying private BFD data"));
1816 /* Switch to the alternate machine code. We have to do this at the
1817 very end, because we only initialize the header when we create
1818 the first section. */
1819 if (use_alt_mach_code != 0)
1821 if (! bfd_alt_mach_code (obfd, use_alt_mach_code))
1823 non_fatal (_("this target does not support %lu alternative machine codes"),
1825 if (bfd_get_flavour (obfd) == bfd_target_elf_flavour)
1827 non_fatal (_("treating that number as an absolute e_machine value instead"));
1828 elf_elfheader (obfd)->e_machine = use_alt_mach_code;
1831 non_fatal (_("ignoring the alternative value"));
1838 /* Read each archive element in turn from IBFD, copy the
1839 contents to temp file, and keep the temp file handle.
1840 If 'force_output_target' is TRUE then make sure that
1841 all elements in the new archive are of the type
1845 copy_archive (bfd *ibfd, bfd *obfd, const char *output_target,
1846 bfd_boolean force_output_target)
1850 struct name_list *next;
1854 bfd **ptr = &obfd->archive_head;
1857 const char *filename;
1859 /* Make a temp directory to hold the contents. */
1860 dir = make_tempdir (bfd_get_filename (obfd));
1862 fatal (_("cannot create tempdir for archive copying (error: %s)"),
1865 obfd->has_armap = ibfd->has_armap;
1866 obfd->is_thin_archive = ibfd->is_thin_archive;
1870 this_element = bfd_openr_next_archived_file (ibfd, NULL);
1872 if (!bfd_set_format (obfd, bfd_get_format (ibfd)))
1875 bfd_nonfatal_message (NULL, obfd, NULL, NULL);
1879 while (!status && this_element != NULL)
1885 int stat_status = 0;
1886 bfd_boolean delete = TRUE;
1888 /* Create an output file for this member. */
1889 output_name = concat (dir, "/",
1890 bfd_get_filename (this_element), (char *) 0);
1892 /* If the file already exists, make another temp dir. */
1893 if (stat (output_name, &buf) >= 0)
1895 output_name = make_tempdir (output_name);
1896 if (output_name == NULL)
1897 fatal (_("cannot create tempdir for archive copying (error: %s)"),
1900 l = xmalloc (sizeof (struct name_list));
1901 l->name = output_name;
1905 output_name = concat (output_name, "/",
1906 bfd_get_filename (this_element), (char *) 0);
1911 stat_status = bfd_stat_arch_elt (this_element, &buf);
1913 if (stat_status != 0)
1914 non_fatal (_("internal stat error on %s"),
1915 bfd_get_filename (this_element));
1918 l = xmalloc (sizeof (struct name_list));
1919 l->name = output_name;
1924 if (bfd_check_format (this_element, bfd_object))
1926 /* PR binutils/3110: Cope with archives
1927 containing multiple target types. */
1928 if (force_output_target)
1929 output_bfd = bfd_openw (output_name, output_target);
1931 output_bfd = bfd_openw (output_name, bfd_get_target (this_element));
1933 if (output_bfd == NULL)
1935 bfd_nonfatal_message (output_name, NULL, NULL, NULL);
1940 delete = ! copy_object (this_element, output_bfd);
1943 || bfd_get_arch (this_element) != bfd_arch_unknown)
1945 if (!bfd_close (output_bfd))
1947 bfd_nonfatal_message (output_name, NULL, NULL, NULL);
1948 /* Error in new object file. Don't change archive. */
1953 goto copy_unknown_element;
1957 bfd_nonfatal_message (NULL, this_element, NULL,
1958 _("Unable to recognise the format of file"));
1960 output_bfd = bfd_openw (output_name, output_target);
1961 copy_unknown_element:
1962 delete = !copy_unknown_object (this_element, output_bfd);
1963 if (!bfd_close_all_done (output_bfd))
1965 bfd_nonfatal_message (output_name, NULL, NULL, NULL);
1966 /* Error in new object file. Don't change archive. */
1973 unlink (output_name);
1978 if (preserve_dates && stat_status == 0)
1979 set_times (output_name, &buf);
1981 /* Open the newly output file and attach to our list. */
1982 output_bfd = bfd_openr (output_name, output_target);
1984 l->obfd = output_bfd;
1987 ptr = &output_bfd->archive_next;
1989 last_element = this_element;
1991 this_element = bfd_openr_next_archived_file (ibfd, last_element);
1993 bfd_close (last_element);
1998 filename = bfd_get_filename (obfd);
1999 if (!bfd_close (obfd))
2002 bfd_nonfatal_message (filename, NULL, NULL, NULL);
2006 filename = bfd_get_filename (ibfd);
2007 if (!bfd_close (ibfd))
2010 bfd_nonfatal_message (filename, NULL, NULL, NULL);
2014 /* Delete all the files that we opened. */
2015 for (l = list; l != NULL; l = l->next)
2017 if (l->obfd == NULL)
2021 bfd_close (l->obfd);
2028 /* The top-level control. */
2031 copy_file (const char *input_filename, const char *output_filename,
2032 const char *input_target, const char *output_target)
2035 char **obj_matching;
2036 char **core_matching;
2038 if (get_file_size (input_filename) < 1)
2044 /* To allow us to do "strip *" without dying on the first
2045 non-object file, failures are nonfatal. */
2046 ibfd = bfd_openr (input_filename, input_target);
2049 bfd_nonfatal_message (input_filename, NULL, NULL, NULL);
2054 if (bfd_check_format (ibfd, bfd_archive))
2056 bfd_boolean force_output_target;
2059 /* bfd_get_target does not return the correct value until
2060 bfd_check_format succeeds. */
2061 if (output_target == NULL)
2063 output_target = bfd_get_target (ibfd);
2064 force_output_target = FALSE;
2067 force_output_target = TRUE;
2069 obfd = bfd_openw (output_filename, output_target);
2072 bfd_nonfatal_message (output_filename, NULL, NULL, NULL);
2077 copy_archive (ibfd, obfd, output_target, force_output_target);
2079 else if (bfd_check_format_matches (ibfd, bfd_object, &obj_matching))
2084 /* bfd_get_target does not return the correct value until
2085 bfd_check_format succeeds. */
2086 if (output_target == NULL)
2087 output_target = bfd_get_target (ibfd);
2089 obfd = bfd_openw (output_filename, output_target);
2092 bfd_nonfatal_message (output_filename, NULL, NULL, NULL);
2097 if (! copy_object (ibfd, obfd))
2100 if (!bfd_close (obfd))
2103 bfd_nonfatal_message (output_filename, NULL, NULL, NULL);
2107 if (!bfd_close (ibfd))
2110 bfd_nonfatal_message (input_filename, NULL, NULL, NULL);
2116 bfd_error_type obj_error = bfd_get_error ();
2117 bfd_error_type core_error;
2119 if (bfd_check_format_matches (ibfd, bfd_core, &core_matching))
2121 /* This probably can't happen.. */
2122 if (obj_error == bfd_error_file_ambiguously_recognized)
2123 free (obj_matching);
2127 core_error = bfd_get_error ();
2128 /* Report the object error in preference to the core error. */
2129 if (obj_error != core_error)
2130 bfd_set_error (obj_error);
2132 bfd_nonfatal_message (input_filename, NULL, NULL, NULL);
2134 if (obj_error == bfd_error_file_ambiguously_recognized)
2136 list_matching_formats (obj_matching);
2137 free (obj_matching);
2139 if (core_error == bfd_error_file_ambiguously_recognized)
2141 list_matching_formats (core_matching);
2142 free (core_matching);
2149 /* Add a name to the section renaming list. */
2152 add_section_rename (const char * old_name, const char * new_name,
2155 section_rename * rename;
2157 /* Check for conflicts first. */
2158 for (rename = section_rename_list; rename != NULL; rename = rename->next)
2159 if (strcmp (rename->old_name, old_name) == 0)
2161 /* Silently ignore duplicate definitions. */
2162 if (strcmp (rename->new_name, new_name) == 0
2163 && rename->flags == flags)
2166 fatal (_("Multiple renames of section %s"), old_name);
2169 rename = xmalloc (sizeof (* rename));
2171 rename->old_name = old_name;
2172 rename->new_name = new_name;
2173 rename->flags = flags;
2174 rename->next = section_rename_list;
2176 section_rename_list = rename;
2179 /* Check the section rename list for a new name of the input section
2180 ISECTION. Return the new name if one is found.
2181 Also set RETURNED_FLAGS to the flags to be used for this section. */
2184 find_section_rename (bfd * ibfd ATTRIBUTE_UNUSED, sec_ptr isection,
2185 flagword * returned_flags)
2187 const char * old_name = bfd_section_name (ibfd, isection);
2188 section_rename * rename;
2190 /* Default to using the flags of the input section. */
2191 * returned_flags = bfd_get_section_flags (ibfd, isection);
2193 for (rename = section_rename_list; rename != NULL; rename = rename->next)
2194 if (strcmp (rename->old_name, old_name) == 0)
2196 if (rename->flags != (flagword) -1)
2197 * returned_flags = rename->flags;
2199 return rename->new_name;
2205 /* Once each of the sections is copied, we may still need to do some
2206 finalization work for private section headers. Do that here. */
2209 setup_bfd_headers (bfd *ibfd, bfd *obfd)
2211 /* Allow the BFD backend to copy any private data it understands
2212 from the input section to the output section. */
2213 if (! bfd_copy_private_header_data (ibfd, obfd))
2216 bfd_nonfatal_message (NULL, ibfd, NULL,
2217 _("error in private header data"));
2221 /* All went well. */
2225 /* Create a section in OBFD with the same
2226 name and attributes as ISECTION in IBFD. */
2229 setup_section (bfd *ibfd, sec_ptr isection, void *obfdarg)
2231 bfd *obfd = obfdarg;
2232 struct section_list *p;
2240 char *prefix = NULL;
2241 bfd_boolean make_nobits;
2243 if (is_strip_section (ibfd, isection))
2246 p = find_section_list (bfd_section_name (ibfd, isection), FALSE);
2250 /* Get the, possibly new, name of the output section. */
2251 name = find_section_rename (ibfd, isection, & flags);
2253 /* Prefix sections. */
2254 if ((prefix_alloc_sections_string)
2255 && (bfd_get_section_flags (ibfd, isection) & SEC_ALLOC))
2256 prefix = prefix_alloc_sections_string;
2257 else if (prefix_sections_string)
2258 prefix = prefix_sections_string;
2264 n = xmalloc (strlen (prefix) + strlen (name) + 1);
2270 make_nobits = FALSE;
2271 if (p != NULL && p->set_flags)
2272 flags = p->flags | (flags & (SEC_HAS_CONTENTS | SEC_RELOC));
2273 else if (strip_symbols == STRIP_NONDEBUG
2274 && (flags & SEC_ALLOC) != 0
2275 && (ibfd->xvec->flavour != bfd_target_elf_flavour
2276 || elf_section_type (isection) != SHT_NOTE))
2278 flags &= ~(SEC_HAS_CONTENTS | SEC_LOAD);
2279 if (obfd->xvec->flavour == bfd_target_elf_flavour)
2283 /* Twiddle the input section flags so that it seems to
2284 elf.c:copy_private_bfd_data that section flags have not
2285 changed between input and output sections. This hack
2286 prevents wholesale rewriting of the program headers. */
2287 isection->flags &= ~(SEC_HAS_CONTENTS | SEC_LOAD);
2291 osection = bfd_make_section_anyway_with_flags (obfd, name, flags);
2293 if (osection == NULL)
2295 err = _("failed to create output section");
2300 elf_section_type (osection) = SHT_NOBITS;
2302 size = bfd_section_size (ibfd, isection);
2304 size = (size + interleave - 1) / interleave;
2305 else if (extract_symbol)
2307 if (! bfd_set_section_size (obfd, osection, size))
2309 err = _("failed to set size");
2313 vma = bfd_section_vma (ibfd, isection);
2314 if (p != NULL && p->change_vma == CHANGE_MODIFY)
2316 else if (p != NULL && p->change_vma == CHANGE_SET)
2319 vma += change_section_address;
2321 if (! bfd_set_section_vma (obfd, osection, vma))
2323 err = _("failed to set vma");
2327 lma = isection->lma;
2328 if ((p != NULL) && p->change_lma != CHANGE_IGNORE)
2330 if (p->change_lma == CHANGE_MODIFY)
2332 else if (p->change_lma == CHANGE_SET)
2338 lma += change_section_address;
2340 osection->lma = lma;
2342 /* FIXME: This is probably not enough. If we change the LMA we
2343 may have to recompute the header for the file as well. */
2344 if (!bfd_set_section_alignment (obfd,
2346 bfd_section_alignment (ibfd, isection)))
2348 err = _("failed to set alignment");
2352 /* Copy merge entity size. */
2353 osection->entsize = isection->entsize;
2355 /* This used to be mangle_section; we do here to avoid using
2356 bfd_get_section_by_name since some formats allow multiple
2357 sections with the same name. */
2358 isection->output_section = osection;
2359 isection->output_offset = 0;
2361 /* Do not copy backend data if --extract-symbol is passed; anything
2362 that needs to look at the section contents will fail. */
2366 if ((isection->flags & SEC_GROUP) != 0)
2368 asymbol *gsym = group_signature (isection);
2372 gsym->flags |= BSF_KEEP;
2373 if (ibfd->xvec->flavour == bfd_target_elf_flavour)
2374 elf_group_id (isection) = gsym;
2378 /* Allow the BFD backend to copy any private data it understands
2379 from the input section to the output section. */
2380 if (!bfd_copy_private_section_data (ibfd, isection, obfd, osection))
2382 err = _("failed to copy private data");
2386 /* All went well. */
2391 bfd_nonfatal_message (NULL, obfd, osection, err);
2394 /* Copy the data of input section ISECTION of IBFD
2395 to an output section with the same name in OBFD.
2396 If stripping then don't copy any relocation info. */
2399 copy_section (bfd *ibfd, sec_ptr isection, void *obfdarg)
2401 bfd *obfd = obfdarg;
2402 struct section_list *p;
2410 /* If we have already failed earlier on,
2411 do not keep on generating complaints now. */
2415 if (is_strip_section (ibfd, isection))
2418 flags = bfd_get_section_flags (ibfd, isection);
2419 if ((flags & SEC_GROUP) != 0)
2422 osection = isection->output_section;
2423 size = bfd_get_section_size (isection);
2425 if (size == 0 || osection == 0)
2431 p = find_section_list (bfd_get_section_name (ibfd, isection), FALSE);
2433 /* Core files do not need to be relocated. */
2434 if (bfd_get_format (obfd) == bfd_core)
2438 relsize = bfd_get_reloc_upper_bound (ibfd, isection);
2442 /* Do not complain if the target does not support relocations. */
2443 if (relsize == -1 && bfd_get_error () == bfd_error_invalid_operation)
2448 bfd_nonfatal_message (NULL, ibfd, isection, NULL);
2455 bfd_set_reloc (obfd, osection, NULL, 0);
2458 relpp = xmalloc (relsize);
2459 relcount = bfd_canonicalize_reloc (ibfd, isection, relpp, isympp);
2463 bfd_nonfatal_message (NULL, ibfd, isection,
2464 _("relocation count is negative"));
2468 if (strip_symbols == STRIP_ALL)
2470 /* Remove relocations which are not in
2471 keep_strip_specific_list. */
2472 arelent **temp_relpp;
2473 long temp_relcount = 0;
2476 temp_relpp = xmalloc (relsize);
2477 for (i = 0; i < relcount; i++)
2478 if (is_specified_symbol (bfd_asymbol_name (*relpp[i]->sym_ptr_ptr),
2479 keep_specific_htab))
2480 temp_relpp [temp_relcount++] = relpp [i];
2481 relcount = temp_relcount;
2486 bfd_set_reloc (obfd, osection, relcount == 0 ? NULL : relpp, relcount);
2491 if (bfd_get_section_flags (ibfd, isection) & SEC_HAS_CONTENTS
2492 && bfd_get_section_flags (obfd, osection) & SEC_HAS_CONTENTS)
2494 void *memhunk = xmalloc (size);
2496 if (!bfd_get_section_contents (ibfd, isection, memhunk, 0, size))
2499 bfd_nonfatal_message (NULL, ibfd, isection, NULL);
2505 /* We don't handle leftover bytes (too many possible behaviors,
2506 and we don't know what the user wants). The section length
2507 must be a multiple of the number of bytes to swap. */
2508 if ((size % reverse_bytes) == 0)
2513 for (i = 0; i < size; i += reverse_bytes)
2514 for (j = 0; j < (unsigned long)(reverse_bytes / 2); j++)
2516 bfd_byte *m = (bfd_byte *) memhunk;
2519 m[i + j] = m[(i + reverse_bytes) - (j + 1)];
2520 m[(i + reverse_bytes) - (j + 1)] = b;
2524 /* User must pad the section up in order to do this. */
2525 fatal (_("cannot reverse bytes: length of section %s must be evenly divisible by %d"),
2526 bfd_section_name (ibfd, isection), reverse_bytes);
2531 /* Keep only every `copy_byte'th byte in MEMHUNK. */
2532 char *from = (char *) memhunk + copy_byte;
2534 char *end = (char *) memhunk + size;
2536 for (; from < end; from += interleave)
2539 size = (size + interleave - 1 - copy_byte) / interleave;
2540 osection->lma /= interleave;
2543 if (!bfd_set_section_contents (obfd, osection, memhunk, 0, size))
2546 bfd_nonfatal_message (NULL, obfd, osection, NULL);
2551 else if (p != NULL && p->set_flags && (p->flags & SEC_HAS_CONTENTS) != 0)
2553 void *memhunk = xmalloc (size);
2555 /* We don't permit the user to turn off the SEC_HAS_CONTENTS
2556 flag--they can just remove the section entirely and add it
2557 back again. However, we do permit them to turn on the
2558 SEC_HAS_CONTENTS flag, and take it to mean that the section
2559 contents should be zeroed out. */
2561 memset (memhunk, 0, size);
2562 if (! bfd_set_section_contents (obfd, osection, memhunk, 0, size))
2565 bfd_nonfatal_message (NULL, obfd, osection, NULL);
2572 /* Get all the sections. This is used when --gap-fill or --pad-to is
2576 get_sections (bfd *obfd ATTRIBUTE_UNUSED, asection *osection, void *secppparg)
2578 asection ***secppp = secppparg;
2580 **secppp = osection;
2584 /* Sort sections by VMA. This is called via qsort, and is used when
2585 --gap-fill or --pad-to is used. We force non loadable or empty
2586 sections to the front, where they are easier to ignore. */
2589 compare_section_lma (const void *arg1, const void *arg2)
2591 const asection *const *sec1 = arg1;
2592 const asection *const *sec2 = arg2;
2593 flagword flags1, flags2;
2595 /* Sort non loadable sections to the front. */
2596 flags1 = (*sec1)->flags;
2597 flags2 = (*sec2)->flags;
2598 if ((flags1 & SEC_HAS_CONTENTS) == 0
2599 || (flags1 & SEC_LOAD) == 0)
2601 if ((flags2 & SEC_HAS_CONTENTS) != 0
2602 && (flags2 & SEC_LOAD) != 0)
2607 if ((flags2 & SEC_HAS_CONTENTS) == 0
2608 || (flags2 & SEC_LOAD) == 0)
2612 /* Sort sections by LMA. */
2613 if ((*sec1)->lma > (*sec2)->lma)
2615 else if ((*sec1)->lma < (*sec2)->lma)
2618 /* Sort sections with the same LMA by size. */
2619 if (bfd_get_section_size (*sec1) > bfd_get_section_size (*sec2))
2621 else if (bfd_get_section_size (*sec1) < bfd_get_section_size (*sec2))
2627 /* Mark all the symbols which will be used in output relocations with
2628 the BSF_KEEP flag so that those symbols will not be stripped.
2630 Ignore relocations which will not appear in the output file. */
2633 mark_symbols_used_in_relocations (bfd *ibfd, sec_ptr isection, void *symbolsarg)
2635 asymbol **symbols = symbolsarg;
2640 /* Ignore an input section with no corresponding output section. */
2641 if (isection->output_section == NULL)
2644 relsize = bfd_get_reloc_upper_bound (ibfd, isection);
2647 /* Do not complain if the target does not support relocations. */
2648 if (relsize == -1 && bfd_get_error () == bfd_error_invalid_operation)
2650 bfd_fatal (bfd_get_filename (ibfd));
2656 relpp = xmalloc (relsize);
2657 relcount = bfd_canonicalize_reloc (ibfd, isection, relpp, symbols);
2659 bfd_fatal (bfd_get_filename (ibfd));
2661 /* Examine each symbol used in a relocation. If it's not one of the
2662 special bfd section symbols, then mark it with BSF_KEEP. */
2663 for (i = 0; i < relcount; i++)
2665 if (*relpp[i]->sym_ptr_ptr != bfd_com_section_ptr->symbol
2666 && *relpp[i]->sym_ptr_ptr != bfd_abs_section_ptr->symbol
2667 && *relpp[i]->sym_ptr_ptr != bfd_und_section_ptr->symbol)
2668 (*relpp[i]->sym_ptr_ptr)->flags |= BSF_KEEP;
2675 /* Write out debugging information. */
2678 write_debugging_info (bfd *obfd, void *dhandle,
2679 long *symcountp ATTRIBUTE_UNUSED,
2680 asymbol ***symppp ATTRIBUTE_UNUSED)
2682 if (bfd_get_flavour (obfd) == bfd_target_ieee_flavour)
2683 return write_ieee_debugging_info (obfd, dhandle);
2685 if (bfd_get_flavour (obfd) == bfd_target_coff_flavour
2686 || bfd_get_flavour (obfd) == bfd_target_elf_flavour)
2688 bfd_byte *syms, *strings;
2689 bfd_size_type symsize, stringsize;
2690 asection *stabsec, *stabstrsec;
2693 if (! write_stabs_in_sections_debugging_info (obfd, dhandle, &syms,
2698 flags = SEC_HAS_CONTENTS | SEC_READONLY | SEC_DEBUGGING;
2699 stabsec = bfd_make_section_with_flags (obfd, ".stab", flags);
2700 stabstrsec = bfd_make_section_with_flags (obfd, ".stabstr", flags);
2702 || stabstrsec == NULL
2703 || ! bfd_set_section_size (obfd, stabsec, symsize)
2704 || ! bfd_set_section_size (obfd, stabstrsec, stringsize)
2705 || ! bfd_set_section_alignment (obfd, stabsec, 2)
2706 || ! bfd_set_section_alignment (obfd, stabstrsec, 0))
2708 bfd_nonfatal_message (NULL, obfd, NULL,
2709 _("can't create debugging section"));
2713 /* We can get away with setting the section contents now because
2714 the next thing the caller is going to do is copy over the
2715 real sections. We may someday have to split the contents
2716 setting out of this function. */
2717 if (! bfd_set_section_contents (obfd, stabsec, syms, 0, symsize)
2718 || ! bfd_set_section_contents (obfd, stabstrsec, strings, 0,
2721 bfd_nonfatal_message (NULL, obfd, NULL,
2722 _("can't set debugging section contents"));
2729 bfd_nonfatal_message (NULL, obfd, NULL,
2730 _("don't know how to write debugging information for %s"),
2731 bfd_get_target (obfd));
2736 strip_main (int argc, char *argv[])
2738 char *input_target = NULL;
2739 char *output_target = NULL;
2740 bfd_boolean show_version = FALSE;
2741 bfd_boolean formats_info = FALSE;
2744 struct section_list *p;
2745 char *output_file = NULL;
2747 while ((c = getopt_long (argc, argv, "I:O:F:K:N:R:o:sSpdgxXHhVvw",
2748 strip_options, (int *) 0)) != EOF)
2753 input_target = optarg;
2756 output_target = optarg;
2759 input_target = output_target = optarg;
2762 p = find_section_list (optarg, TRUE);
2764 sections_removed = TRUE;
2767 strip_symbols = STRIP_ALL;
2771 case 'd': /* Historic BSD alias for -g. Used by early NetBSD. */
2772 strip_symbols = STRIP_DEBUG;
2774 case OPTION_STRIP_UNNEEDED:
2775 strip_symbols = STRIP_UNNEEDED;
2778 add_specific_symbol (optarg, keep_specific_htab);
2781 add_specific_symbol (optarg, strip_specific_htab);
2784 output_file = optarg;
2787 preserve_dates = TRUE;
2790 discard_locals = LOCALS_ALL;
2793 discard_locals = LOCALS_START_L;
2799 show_version = TRUE;
2801 case OPTION_FORMATS_INFO:
2802 formats_info = TRUE;
2804 case OPTION_ONLY_KEEP_DEBUG:
2805 strip_symbols = STRIP_NONDEBUG;
2807 case OPTION_KEEP_FILE_SYMBOLS:
2808 keep_file_symbols = 1;
2811 /* We've been given a long option. */
2818 strip_usage (stdout, 0);
2820 strip_usage (stderr, 1);
2831 print_version ("strip");
2833 /* Default is to strip all symbols. */
2834 if (strip_symbols == STRIP_UNDEF
2835 && discard_locals == LOCALS_UNDEF
2836 && htab_elements (strip_specific_htab) == 0)
2837 strip_symbols = STRIP_ALL;
2839 if (output_target == NULL)
2840 output_target = input_target;
2844 || (output_file != NULL && (i + 1) < argc))
2845 strip_usage (stderr, 1);
2847 for (; i < argc; i++)
2849 int hold_status = status;
2850 struct stat statbuf;
2853 if (get_file_size (argv[i]) < 1)
2860 /* No need to check the return value of stat().
2861 It has already been checked in get_file_size(). */
2862 stat (argv[i], &statbuf);
2864 if (output_file == NULL || strcmp (argv[i], output_file) == 0)
2865 tmpname = make_tempname (argv[i]);
2867 tmpname = output_file;
2869 if (tmpname == NULL)
2871 bfd_nonfatal_message (argv[i], NULL, NULL,
2872 _("could not create temporary file to hold stripped copy"));
2878 copy_file (argv[i], tmpname, input_target, output_target);
2882 set_times (tmpname, &statbuf);
2883 if (output_file != tmpname)
2884 smart_rename (tmpname, output_file ? output_file : argv[i],
2886 status = hold_status;
2889 unlink_if_ordinary (tmpname);
2890 if (output_file != tmpname)
2898 copy_main (int argc, char *argv[])
2900 char * binary_architecture = NULL;
2901 char *input_filename = NULL;
2902 char *output_filename = NULL;
2904 char *input_target = NULL;
2905 char *output_target = NULL;
2906 bfd_boolean show_version = FALSE;
2907 bfd_boolean change_warn = TRUE;
2908 bfd_boolean formats_info = FALSE;
2910 struct section_list *p;
2911 struct stat statbuf;
2913 while ((c = getopt_long (argc, argv, "b:B:i:I:j:K:N:s:O:d:F:L:G:R:SpgxXHhVvW:w",
2914 copy_options, (int *) 0)) != EOF)
2919 copy_byte = atoi (optarg);
2921 fatal (_("byte number must be non-negative"));
2925 binary_architecture = optarg;
2929 interleave = atoi (optarg);
2931 fatal (_("interleave must be positive"));
2935 case 's': /* "source" - 'I' is preferred */
2936 input_target = optarg;
2940 case 'd': /* "destination" - 'O' is preferred */
2941 output_target = optarg;
2945 input_target = output_target = optarg;
2949 p = find_section_list (optarg, TRUE);
2951 fatal (_("%s both copied and removed"), optarg);
2953 sections_copied = TRUE;
2957 p = find_section_list (optarg, TRUE);
2959 fatal (_("%s both copied and removed"), optarg);
2961 sections_removed = TRUE;
2965 strip_symbols = STRIP_ALL;
2969 strip_symbols = STRIP_DEBUG;
2972 case OPTION_STRIP_UNNEEDED:
2973 strip_symbols = STRIP_UNNEEDED;
2976 case OPTION_ONLY_KEEP_DEBUG:
2977 strip_symbols = STRIP_NONDEBUG;
2980 case OPTION_KEEP_FILE_SYMBOLS:
2981 keep_file_symbols = 1;
2984 case OPTION_ADD_GNU_DEBUGLINK:
2985 gnu_debuglink_filename = optarg;
2989 add_specific_symbol (optarg, keep_specific_htab);
2993 add_specific_symbol (optarg, strip_specific_htab);
2996 case OPTION_STRIP_UNNEEDED_SYMBOL:
2997 add_specific_symbol (optarg, strip_unneeded_htab);
3001 add_specific_symbol (optarg, localize_specific_htab);
3004 case OPTION_GLOBALIZE_SYMBOL:
3005 add_specific_symbol (optarg, globalize_specific_htab);
3009 add_specific_symbol (optarg, keepglobal_specific_htab);
3013 add_specific_symbol (optarg, weaken_specific_htab);
3017 preserve_dates = TRUE;
3025 discard_locals = LOCALS_ALL;
3029 discard_locals = LOCALS_START_L;
3037 show_version = TRUE;
3040 case OPTION_FORMATS_INFO:
3041 formats_info = TRUE;
3048 case OPTION_ADD_SECTION:
3052 struct section_add *pa;
3057 s = strchr (optarg, '=');
3060 fatal (_("bad format for %s"), "--add-section");
3062 size = get_file_size (s + 1);
3069 pa = xmalloc (sizeof (struct section_add));
3072 name = xmalloc (len + 1);
3073 strncpy (name, optarg, len);
3077 pa->filename = s + 1;
3079 pa->contents = xmalloc (size);
3081 f = fopen (pa->filename, FOPEN_RB);
3084 fatal (_("cannot open: %s: %s"),
3085 pa->filename, strerror (errno));
3087 if (fread (pa->contents, 1, pa->size, f) == 0
3089 fatal (_("%s: fread failed"), pa->filename);
3093 pa->next = add_sections;
3098 case OPTION_CHANGE_START:
3099 change_start = parse_vma (optarg, "--change-start");
3102 case OPTION_CHANGE_SECTION_ADDRESS:
3103 case OPTION_CHANGE_SECTION_LMA:
3104 case OPTION_CHANGE_SECTION_VMA:
3109 char *option = NULL;
3111 enum change_action what = CHANGE_IGNORE;
3115 case OPTION_CHANGE_SECTION_ADDRESS:
3116 option = "--change-section-address";
3118 case OPTION_CHANGE_SECTION_LMA:
3119 option = "--change-section-lma";
3121 case OPTION_CHANGE_SECTION_VMA:
3122 option = "--change-section-vma";
3126 s = strchr (optarg, '=');
3129 s = strchr (optarg, '+');
3132 s = strchr (optarg, '-');
3134 fatal (_("bad format for %s"), option);
3139 name = xmalloc (len + 1);
3140 strncpy (name, optarg, len);
3143 p = find_section_list (name, TRUE);
3145 val = parse_vma (s + 1, option);
3149 case '=': what = CHANGE_SET; break;
3150 case '-': val = - val; /* Drop through. */
3151 case '+': what = CHANGE_MODIFY; break;
3156 case OPTION_CHANGE_SECTION_ADDRESS:
3157 p->change_vma = what;
3161 case OPTION_CHANGE_SECTION_LMA:
3162 p->change_lma = what;
3166 case OPTION_CHANGE_SECTION_VMA:
3167 p->change_vma = what;
3174 case OPTION_CHANGE_ADDRESSES:
3175 change_section_address = parse_vma (optarg, "--change-addresses");
3176 change_start = change_section_address;
3179 case OPTION_CHANGE_WARNINGS:
3183 case OPTION_CHANGE_LEADING_CHAR:
3184 change_leading_char = TRUE;
3187 case OPTION_DEBUGGING:
3188 convert_debugging = TRUE;
3191 case OPTION_GAP_FILL:
3193 bfd_vma gap_fill_vma;
3195 gap_fill_vma = parse_vma (optarg, "--gap-fill");
3196 gap_fill = (bfd_byte) gap_fill_vma;
3197 if ((bfd_vma) gap_fill != gap_fill_vma)
3201 sprintf_vma (buff, gap_fill_vma);
3203 non_fatal (_("Warning: truncating gap-fill from 0x%s to 0x%x"),
3206 gap_fill_set = TRUE;
3210 case OPTION_NO_CHANGE_WARNINGS:
3211 change_warn = FALSE;
3215 pad_to = parse_vma (optarg, "--pad-to");
3219 case OPTION_REMOVE_LEADING_CHAR:
3220 remove_leading_char = TRUE;
3223 case OPTION_REDEFINE_SYM:
3225 /* Push this redefinition onto redefine_symbol_list. */
3229 const char *nextarg;
3230 char *source, *target;
3232 s = strchr (optarg, '=');
3234 fatal (_("bad format for %s"), "--redefine-sym");
3237 source = xmalloc (len + 1);
3238 strncpy (source, optarg, len);
3242 len = strlen (nextarg);
3243 target = xmalloc (len + 1);
3244 strcpy (target, nextarg);
3246 redefine_list_append ("--redefine-sym", source, target);
3253 case OPTION_REDEFINE_SYMS:
3254 add_redefine_syms_file (optarg);
3257 case OPTION_SET_SECTION_FLAGS:
3263 s = strchr (optarg, '=');
3265 fatal (_("bad format for %s"), "--set-section-flags");
3268 name = xmalloc (len + 1);
3269 strncpy (name, optarg, len);
3272 p = find_section_list (name, TRUE);
3274 p->set_flags = TRUE;
3275 p->flags = parse_flags (s + 1);
3279 case OPTION_RENAME_SECTION:
3282 const char *eq, *fl;
3287 eq = strchr (optarg, '=');
3289 fatal (_("bad format for %s"), "--rename-section");
3293 fatal (_("bad format for %s"), "--rename-section");
3295 old_name = xmalloc (len + 1);
3296 strncpy (old_name, optarg, len);
3300 fl = strchr (eq, ',');
3303 flags = parse_flags (fl + 1);
3313 fatal (_("bad format for %s"), "--rename-section");
3315 new_name = xmalloc (len + 1);
3316 strncpy (new_name, eq, len);
3319 add_section_rename (old_name, new_name, flags);
3323 case OPTION_SET_START:
3324 set_start = parse_vma (optarg, "--set-start");
3325 set_start_set = TRUE;
3328 case OPTION_SREC_LEN:
3329 Chunk = parse_vma (optarg, "--srec-len");
3332 case OPTION_SREC_FORCES3:
3336 case OPTION_STRIP_SYMBOLS:
3337 add_specific_symbols (optarg, strip_specific_htab);
3340 case OPTION_STRIP_UNNEEDED_SYMBOLS:
3341 add_specific_symbols (optarg, strip_unneeded_htab);
3344 case OPTION_KEEP_SYMBOLS:
3345 add_specific_symbols (optarg, keep_specific_htab);
3348 case OPTION_LOCALIZE_HIDDEN:
3349 localize_hidden = TRUE;
3352 case OPTION_LOCALIZE_SYMBOLS:
3353 add_specific_symbols (optarg, localize_specific_htab);
3356 case OPTION_GLOBALIZE_SYMBOLS:
3357 add_specific_symbols (optarg, globalize_specific_htab);
3360 case OPTION_KEEPGLOBAL_SYMBOLS:
3361 add_specific_symbols (optarg, keepglobal_specific_htab);
3364 case OPTION_WEAKEN_SYMBOLS:
3365 add_specific_symbols (optarg, weaken_specific_htab);
3368 case OPTION_ALT_MACH_CODE:
3369 use_alt_mach_code = strtoul (optarg, NULL, 0);
3370 if (use_alt_mach_code == 0)
3371 fatal (_("unable to parse alternative machine code"));
3374 case OPTION_PREFIX_SYMBOLS:
3375 prefix_symbols_string = optarg;
3378 case OPTION_PREFIX_SECTIONS:
3379 prefix_sections_string = optarg;
3382 case OPTION_PREFIX_ALLOC_SECTIONS:
3383 prefix_alloc_sections_string = optarg;
3386 case OPTION_READONLY_TEXT:
3387 bfd_flags_to_set |= WP_TEXT;
3388 bfd_flags_to_clear &= ~WP_TEXT;
3391 case OPTION_WRITABLE_TEXT:
3392 bfd_flags_to_clear |= WP_TEXT;
3393 bfd_flags_to_set &= ~WP_TEXT;
3397 bfd_flags_to_set |= D_PAGED;
3398 bfd_flags_to_clear &= ~D_PAGED;
3402 bfd_flags_to_clear |= D_PAGED;
3403 bfd_flags_to_set &= ~D_PAGED;
3406 case OPTION_EXTRACT_SYMBOL:
3407 extract_symbol = TRUE;
3410 case OPTION_REVERSE_BYTES:
3412 int prev = reverse_bytes;
3414 reverse_bytes = atoi (optarg);
3415 if ((reverse_bytes <= 0) || ((reverse_bytes % 2) != 0))
3416 fatal (_("number of bytes to reverse must be positive and even"));
3418 if (prev && prev != reverse_bytes)
3419 non_fatal (_("Warning: ignoring previous --reverse-bytes value of %d"),
3425 /* We've been given a long option. */
3430 copy_usage (stdout, 0);
3433 copy_usage (stderr, 1);
3444 print_version ("objcopy");
3446 if (copy_byte >= interleave)
3447 fatal (_("byte number must be less than interleave"));
3449 if (optind == argc || optind + 2 < argc)
3450 copy_usage (stderr, 1);
3452 input_filename = argv[optind];
3453 if (optind + 1 < argc)
3454 output_filename = argv[optind + 1];
3456 /* Default is to strip no symbols. */
3457 if (strip_symbols == STRIP_UNDEF && discard_locals == LOCALS_UNDEF)
3458 strip_symbols = STRIP_NONE;
3460 if (output_target == NULL)
3461 output_target = input_target;
3463 if (binary_architecture != NULL)
3465 if (input_target && strcmp (input_target, "binary") == 0)
3467 const bfd_arch_info_type * temp_arch_info;
3469 temp_arch_info = bfd_scan_arch (binary_architecture);
3471 if (temp_arch_info != NULL)
3473 bfd_external_binary_architecture = temp_arch_info->arch;
3474 bfd_external_machine = temp_arch_info->mach;
3477 fatal (_("architecture %s unknown"), binary_architecture);
3481 non_fatal (_("Warning: input target 'binary' required for binary architecture parameter."));
3482 non_fatal (_(" Argument %s ignored"), binary_architecture);
3487 if (stat (input_filename, & statbuf) < 0)
3488 fatal (_("warning: could not locate '%s'. System error message: %s"),
3489 input_filename, strerror (errno));
3491 /* If there is no destination file, or the source and destination files
3492 are the same, then create a temp and rename the result into the input. */
3493 if (output_filename == NULL || strcmp (input_filename, output_filename) == 0)
3494 tmpname = make_tempname (input_filename);
3496 tmpname = output_filename;
3498 if (tmpname == NULL)
3499 fatal (_("warning: could not create temporary file whilst copying '%s', (error: %s)"),
3500 input_filename, strerror (errno));
3502 copy_file (input_filename, tmpname, input_target, output_target);
3506 set_times (tmpname, &statbuf);
3507 if (tmpname != output_filename)
3508 smart_rename (tmpname, input_filename, preserve_dates);
3511 unlink_if_ordinary (tmpname);
3515 for (p = change_sections; p != NULL; p = p->next)
3519 if (p->change_vma != CHANGE_IGNORE)
3523 sprintf_vma (buff, p->vma_val);
3525 /* xgettext:c-format */
3526 non_fatal (_("%s %s%c0x%s never used"),
3527 "--change-section-vma",
3529 p->change_vma == CHANGE_SET ? '=' : '+',
3533 if (p->change_lma != CHANGE_IGNORE)
3537 sprintf_vma (buff, p->lma_val);
3539 /* xgettext:c-format */
3540 non_fatal (_("%s %s%c0x%s never used"),
3541 "--change-section-lma",
3543 p->change_lma == CHANGE_SET ? '=' : '+',
3554 main (int argc, char *argv[])
3556 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
3557 setlocale (LC_MESSAGES, "");
3559 #if defined (HAVE_SETLOCALE)
3560 setlocale (LC_CTYPE, "");
3562 bindtextdomain (PACKAGE, LOCALEDIR);
3563 textdomain (PACKAGE);
3565 program_name = argv[0];
3566 xmalloc_set_program_name (program_name);
3568 START_PROGRESS (program_name, 0);
3570 expandargv (&argc, &argv);
3572 strip_symbols = STRIP_UNDEF;
3573 discard_locals = LOCALS_UNDEF;
3576 set_default_bfd_target ();
3580 int i = strlen (program_name);
3581 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3582 /* Drop the .exe suffix, if any. */
3583 if (i > 4 && FILENAME_CMP (program_name + i - 4, ".exe") == 0)
3586 program_name[i] = '\0';
3589 is_strip = (i >= 5 && FILENAME_CMP (program_name + i - 5, "strip") == 0);
3592 create_symbol_htabs ();
3595 strip_main (argc, argv);
3597 copy_main (argc, argv);
3599 END_PROGRESS (program_name);