* sysdep.h: Include sys/stat.h here.
[deliverable/binutils-gdb.git] / binutils / objcopy.c
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, 2010, 2011, 2012
4 Free Software Foundation, Inc.
5
6 This file is part of GNU Binutils.
7
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.
12
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.
17
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
21 02110-1301, USA. */
22 \f
23 #include "sysdep.h"
24 #include "bfd.h"
25 #include "progress.h"
26 #include "getopt.h"
27 #include "libiberty.h"
28 #include "bucomm.h"
29 #include "budbg.h"
30 #include "filenames.h"
31 #include "fnmatch.h"
32 #include "elf-bfd.h"
33 #include "libbfd.h"
34 #include "coff/internal.h"
35 #include "libcoff.h"
36
37 /* FIXME: See bfd/peXXigen.c for why we include an architecture specific
38 header in generic PE code. */
39 #include "coff/i386.h"
40 #include "coff/pe.h"
41
42 static bfd_vma pe_file_alignment = (bfd_vma) -1;
43 static bfd_vma pe_heap_commit = (bfd_vma) -1;
44 static bfd_vma pe_heap_reserve = (bfd_vma) -1;
45 static bfd_vma pe_image_base = (bfd_vma) -1;
46 static bfd_vma pe_section_alignment = (bfd_vma) -1;
47 static bfd_vma pe_stack_commit = (bfd_vma) -1;
48 static bfd_vma pe_stack_reserve = (bfd_vma) -1;
49 static short pe_subsystem = -1;
50 static short pe_major_subsystem_version = -1;
51 static short pe_minor_subsystem_version = -1;
52
53 struct is_specified_symbol_predicate_data
54 {
55 const char *name;
56 bfd_boolean found;
57 };
58
59 /* A list to support redefine_sym. */
60 struct redefine_node
61 {
62 char *source;
63 char *target;
64 struct redefine_node *next;
65 };
66
67 typedef struct section_rename
68 {
69 const char * old_name;
70 const char * new_name;
71 flagword flags;
72 struct section_rename * next;
73 }
74 section_rename;
75
76 /* List of sections to be renamed. */
77 static section_rename *section_rename_list;
78
79 static asymbol **isympp = NULL; /* Input symbols. */
80 static asymbol **osympp = NULL; /* Output symbols that survive stripping. */
81
82 /* If `copy_byte' >= 0, copy 'copy_width' byte(s) of every `interleave' bytes. */
83 static int copy_byte = -1;
84 static int interleave = 0; /* Initialised to 4 in copy_main(). */
85 static int copy_width = 1;
86
87 static bfd_boolean verbose; /* Print file and target names. */
88 static bfd_boolean preserve_dates; /* Preserve input file timestamp. */
89 static int status = 0; /* Exit status. */
90
91 enum strip_action
92 {
93 STRIP_UNDEF,
94 STRIP_NONE, /* Don't strip. */
95 STRIP_DEBUG, /* Strip all debugger symbols. */
96 STRIP_UNNEEDED, /* Strip unnecessary symbols. */
97 STRIP_NONDEBUG, /* Strip everything but debug info. */
98 STRIP_ALL /* Strip all symbols. */
99 };
100
101 /* Which symbols to remove. */
102 static enum strip_action strip_symbols;
103
104 enum locals_action
105 {
106 LOCALS_UNDEF,
107 LOCALS_START_L, /* Discard locals starting with L. */
108 LOCALS_ALL /* Discard all locals. */
109 };
110
111 /* Which local symbols to remove. Overrides STRIP_ALL. */
112 static enum locals_action discard_locals;
113
114 /* What kind of change to perform. */
115 enum change_action
116 {
117 CHANGE_IGNORE,
118 CHANGE_MODIFY,
119 CHANGE_SET
120 };
121
122 /* Structure used to hold lists of sections and actions to take. */
123 struct section_list
124 {
125 struct section_list * next; /* Next section to change. */
126 const char * name; /* Section name. */
127 bfd_boolean used; /* Whether this entry was used. */
128 bfd_boolean remove; /* Whether to remove this section. */
129 bfd_boolean copy; /* Whether to copy this section. */
130 enum change_action change_vma;/* Whether to change or set VMA. */
131 bfd_vma vma_val; /* Amount to change by or set to. */
132 enum change_action change_lma;/* Whether to change or set LMA. */
133 bfd_vma lma_val; /* Amount to change by or set to. */
134 bfd_boolean set_flags; /* Whether to set the section flags. */
135 flagword flags; /* What to set the section flags to. */
136 };
137
138 static struct section_list *change_sections;
139
140 /* TRUE if some sections are to be removed. */
141 static bfd_boolean sections_removed;
142
143 /* TRUE if only some sections are to be copied. */
144 static bfd_boolean sections_copied;
145
146 /* Changes to the start address. */
147 static bfd_vma change_start = 0;
148 static bfd_boolean set_start_set = FALSE;
149 static bfd_vma set_start;
150
151 /* Changes to section addresses. */
152 static bfd_vma change_section_address = 0;
153
154 /* Filling gaps between sections. */
155 static bfd_boolean gap_fill_set = FALSE;
156 static bfd_byte gap_fill = 0;
157
158 /* Pad to a given address. */
159 static bfd_boolean pad_to_set = FALSE;
160 static bfd_vma pad_to;
161
162 /* Use alternative machine code? */
163 static unsigned long use_alt_mach_code = 0;
164
165 /* Output BFD flags user wants to set or clear */
166 static flagword bfd_flags_to_set;
167 static flagword bfd_flags_to_clear;
168
169 /* List of sections to add. */
170 struct section_add
171 {
172 /* Next section to add. */
173 struct section_add *next;
174 /* Name of section to add. */
175 const char *name;
176 /* Name of file holding section contents. */
177 const char *filename;
178 /* Size of file. */
179 size_t size;
180 /* Contents of file. */
181 bfd_byte *contents;
182 /* BFD section, after it has been added. */
183 asection *section;
184 };
185
186 /* List of sections to add to the output BFD. */
187 static struct section_add *add_sections;
188
189 /* If non-NULL the argument to --add-gnu-debuglink.
190 This should be the filename to store in the .gnu_debuglink section. */
191 static const char * gnu_debuglink_filename = NULL;
192
193 /* Whether to convert debugging information. */
194 static bfd_boolean convert_debugging = FALSE;
195
196 /* Whether to compress/decompress DWARF debug sections. */
197 static enum
198 {
199 nothing,
200 compress,
201 decompress
202 } do_debug_sections = nothing;
203
204 /* Whether to change the leading character in symbol names. */
205 static bfd_boolean change_leading_char = FALSE;
206
207 /* Whether to remove the leading character from global symbol names. */
208 static bfd_boolean remove_leading_char = FALSE;
209
210 /* Whether to permit wildcard in symbol comparison. */
211 static bfd_boolean wildcard = FALSE;
212
213 /* True if --localize-hidden is in effect. */
214 static bfd_boolean localize_hidden = FALSE;
215
216 /* List of symbols to strip, keep, localize, keep-global, weaken,
217 or redefine. */
218 static htab_t strip_specific_htab = NULL;
219 static htab_t strip_unneeded_htab = NULL;
220 static htab_t keep_specific_htab = NULL;
221 static htab_t localize_specific_htab = NULL;
222 static htab_t globalize_specific_htab = NULL;
223 static htab_t keepglobal_specific_htab = NULL;
224 static htab_t weaken_specific_htab = NULL;
225 static struct redefine_node *redefine_sym_list = NULL;
226
227 /* If this is TRUE, we weaken global symbols (set BSF_WEAK). */
228 static bfd_boolean weaken = FALSE;
229
230 /* If this is TRUE, we retain BSF_FILE symbols. */
231 static bfd_boolean keep_file_symbols = FALSE;
232
233 /* Prefix symbols/sections. */
234 static char *prefix_symbols_string = 0;
235 static char *prefix_sections_string = 0;
236 static char *prefix_alloc_sections_string = 0;
237
238 /* True if --extract-symbol was passed on the command line. */
239 static bfd_boolean extract_symbol = FALSE;
240
241 /* If `reverse_bytes' is nonzero, then reverse the order of every chunk
242 of <reverse_bytes> bytes within each output section. */
243 static int reverse_bytes = 0;
244
245 /* For Coff objects, we may want to allow or disallow long section names,
246 or preserve them where found in the inputs. Debug info relies on them. */
247 enum long_section_name_handling
248 {
249 DISABLE,
250 ENABLE,
251 KEEP
252 };
253
254 /* The default long section handling mode is to preserve them.
255 This is also the only behaviour for 'strip'. */
256 static enum long_section_name_handling long_section_names = KEEP;
257
258 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
259 enum command_line_switch
260 {
261 OPTION_ADD_SECTION=150,
262 OPTION_CHANGE_ADDRESSES,
263 OPTION_CHANGE_LEADING_CHAR,
264 OPTION_CHANGE_START,
265 OPTION_CHANGE_SECTION_ADDRESS,
266 OPTION_CHANGE_SECTION_LMA,
267 OPTION_CHANGE_SECTION_VMA,
268 OPTION_CHANGE_WARNINGS,
269 OPTION_COMPRESS_DEBUG_SECTIONS,
270 OPTION_DEBUGGING,
271 OPTION_DECOMPRESS_DEBUG_SECTIONS,
272 OPTION_GAP_FILL,
273 OPTION_NO_CHANGE_WARNINGS,
274 OPTION_PAD_TO,
275 OPTION_REMOVE_LEADING_CHAR,
276 OPTION_SET_SECTION_FLAGS,
277 OPTION_SET_START,
278 OPTION_STRIP_UNNEEDED,
279 OPTION_WEAKEN,
280 OPTION_REDEFINE_SYM,
281 OPTION_REDEFINE_SYMS,
282 OPTION_SREC_LEN,
283 OPTION_SREC_FORCES3,
284 OPTION_STRIP_SYMBOLS,
285 OPTION_STRIP_UNNEEDED_SYMBOL,
286 OPTION_STRIP_UNNEEDED_SYMBOLS,
287 OPTION_KEEP_SYMBOLS,
288 OPTION_LOCALIZE_HIDDEN,
289 OPTION_LOCALIZE_SYMBOLS,
290 OPTION_LONG_SECTION_NAMES,
291 OPTION_GLOBALIZE_SYMBOL,
292 OPTION_GLOBALIZE_SYMBOLS,
293 OPTION_KEEPGLOBAL_SYMBOLS,
294 OPTION_WEAKEN_SYMBOLS,
295 OPTION_RENAME_SECTION,
296 OPTION_ALT_MACH_CODE,
297 OPTION_PREFIX_SYMBOLS,
298 OPTION_PREFIX_SECTIONS,
299 OPTION_PREFIX_ALLOC_SECTIONS,
300 OPTION_FORMATS_INFO,
301 OPTION_ADD_GNU_DEBUGLINK,
302 OPTION_ONLY_KEEP_DEBUG,
303 OPTION_KEEP_FILE_SYMBOLS,
304 OPTION_READONLY_TEXT,
305 OPTION_WRITABLE_TEXT,
306 OPTION_PURE,
307 OPTION_IMPURE,
308 OPTION_EXTRACT_SYMBOL,
309 OPTION_REVERSE_BYTES,
310 OPTION_FILE_ALIGNMENT,
311 OPTION_HEAP,
312 OPTION_IMAGE_BASE,
313 OPTION_SECTION_ALIGNMENT,
314 OPTION_STACK,
315 OPTION_INTERLEAVE_WIDTH,
316 OPTION_SUBSYSTEM
317 };
318
319 /* Options to handle if running as "strip". */
320
321 static struct option strip_options[] =
322 {
323 {"discard-all", no_argument, 0, 'x'},
324 {"discard-locals", no_argument, 0, 'X'},
325 {"format", required_argument, 0, 'F'}, /* Obsolete */
326 {"help", no_argument, 0, 'h'},
327 {"info", no_argument, 0, OPTION_FORMATS_INFO},
328 {"input-format", required_argument, 0, 'I'}, /* Obsolete */
329 {"input-target", required_argument, 0, 'I'},
330 {"keep-file-symbols", no_argument, 0, OPTION_KEEP_FILE_SYMBOLS},
331 {"keep-symbol", required_argument, 0, 'K'},
332 {"only-keep-debug", no_argument, 0, OPTION_ONLY_KEEP_DEBUG},
333 {"output-format", required_argument, 0, 'O'}, /* Obsolete */
334 {"output-target", required_argument, 0, 'O'},
335 {"output-file", required_argument, 0, 'o'},
336 {"preserve-dates", no_argument, 0, 'p'},
337 {"remove-section", required_argument, 0, 'R'},
338 {"strip-all", no_argument, 0, 's'},
339 {"strip-debug", no_argument, 0, 'S'},
340 {"strip-unneeded", no_argument, 0, OPTION_STRIP_UNNEEDED},
341 {"strip-symbol", required_argument, 0, 'N'},
342 {"target", required_argument, 0, 'F'},
343 {"verbose", no_argument, 0, 'v'},
344 {"version", no_argument, 0, 'V'},
345 {"wildcard", no_argument, 0, 'w'},
346 {0, no_argument, 0, 0}
347 };
348
349 /* Options to handle if running as "objcopy". */
350
351 static struct option copy_options[] =
352 {
353 {"add-gnu-debuglink", required_argument, 0, OPTION_ADD_GNU_DEBUGLINK},
354 {"add-section", required_argument, 0, OPTION_ADD_SECTION},
355 {"adjust-start", required_argument, 0, OPTION_CHANGE_START},
356 {"adjust-vma", required_argument, 0, OPTION_CHANGE_ADDRESSES},
357 {"adjust-section-vma", required_argument, 0, OPTION_CHANGE_SECTION_ADDRESS},
358 {"adjust-warnings", no_argument, 0, OPTION_CHANGE_WARNINGS},
359 {"alt-machine-code", required_argument, 0, OPTION_ALT_MACH_CODE},
360 {"binary-architecture", required_argument, 0, 'B'},
361 {"byte", required_argument, 0, 'b'},
362 {"change-addresses", required_argument, 0, OPTION_CHANGE_ADDRESSES},
363 {"change-leading-char", no_argument, 0, OPTION_CHANGE_LEADING_CHAR},
364 {"change-section-address", required_argument, 0, OPTION_CHANGE_SECTION_ADDRESS},
365 {"change-section-lma", required_argument, 0, OPTION_CHANGE_SECTION_LMA},
366 {"change-section-vma", required_argument, 0, OPTION_CHANGE_SECTION_VMA},
367 {"change-start", required_argument, 0, OPTION_CHANGE_START},
368 {"change-warnings", no_argument, 0, OPTION_CHANGE_WARNINGS},
369 {"compress-debug-sections", no_argument, 0, OPTION_COMPRESS_DEBUG_SECTIONS},
370 {"debugging", no_argument, 0, OPTION_DEBUGGING},
371 {"decompress-debug-sections", no_argument, 0, OPTION_DECOMPRESS_DEBUG_SECTIONS},
372 {"discard-all", no_argument, 0, 'x'},
373 {"discard-locals", no_argument, 0, 'X'},
374 {"extract-symbol", no_argument, 0, OPTION_EXTRACT_SYMBOL},
375 {"format", required_argument, 0, 'F'}, /* Obsolete */
376 {"gap-fill", required_argument, 0, OPTION_GAP_FILL},
377 {"globalize-symbol", required_argument, 0, OPTION_GLOBALIZE_SYMBOL},
378 {"globalize-symbols", required_argument, 0, OPTION_GLOBALIZE_SYMBOLS},
379 {"help", no_argument, 0, 'h'},
380 {"impure", no_argument, 0, OPTION_IMPURE},
381 {"info", no_argument, 0, OPTION_FORMATS_INFO},
382 {"input-format", required_argument, 0, 'I'}, /* Obsolete */
383 {"input-target", required_argument, 0, 'I'},
384 {"interleave", optional_argument, 0, 'i'},
385 {"interleave-width", required_argument, 0, OPTION_INTERLEAVE_WIDTH},
386 {"keep-file-symbols", no_argument, 0, OPTION_KEEP_FILE_SYMBOLS},
387 {"keep-global-symbol", required_argument, 0, 'G'},
388 {"keep-global-symbols", required_argument, 0, OPTION_KEEPGLOBAL_SYMBOLS},
389 {"keep-symbol", required_argument, 0, 'K'},
390 {"keep-symbols", required_argument, 0, OPTION_KEEP_SYMBOLS},
391 {"localize-hidden", no_argument, 0, OPTION_LOCALIZE_HIDDEN},
392 {"localize-symbol", required_argument, 0, 'L'},
393 {"localize-symbols", required_argument, 0, OPTION_LOCALIZE_SYMBOLS},
394 {"long-section-names", required_argument, 0, OPTION_LONG_SECTION_NAMES},
395 {"no-adjust-warnings", no_argument, 0, OPTION_NO_CHANGE_WARNINGS},
396 {"no-change-warnings", no_argument, 0, OPTION_NO_CHANGE_WARNINGS},
397 {"only-keep-debug", no_argument, 0, OPTION_ONLY_KEEP_DEBUG},
398 {"only-section", required_argument, 0, 'j'},
399 {"output-format", required_argument, 0, 'O'}, /* Obsolete */
400 {"output-target", required_argument, 0, 'O'},
401 {"pad-to", required_argument, 0, OPTION_PAD_TO},
402 {"prefix-symbols", required_argument, 0, OPTION_PREFIX_SYMBOLS},
403 {"prefix-sections", required_argument, 0, OPTION_PREFIX_SECTIONS},
404 {"prefix-alloc-sections", required_argument, 0, OPTION_PREFIX_ALLOC_SECTIONS},
405 {"preserve-dates", no_argument, 0, 'p'},
406 {"pure", no_argument, 0, OPTION_PURE},
407 {"readonly-text", no_argument, 0, OPTION_READONLY_TEXT},
408 {"redefine-sym", required_argument, 0, OPTION_REDEFINE_SYM},
409 {"redefine-syms", required_argument, 0, OPTION_REDEFINE_SYMS},
410 {"remove-leading-char", no_argument, 0, OPTION_REMOVE_LEADING_CHAR},
411 {"remove-section", required_argument, 0, 'R'},
412 {"rename-section", required_argument, 0, OPTION_RENAME_SECTION},
413 {"reverse-bytes", required_argument, 0, OPTION_REVERSE_BYTES},
414 {"set-section-flags", required_argument, 0, OPTION_SET_SECTION_FLAGS},
415 {"set-start", required_argument, 0, OPTION_SET_START},
416 {"srec-len", required_argument, 0, OPTION_SREC_LEN},
417 {"srec-forceS3", no_argument, 0, OPTION_SREC_FORCES3},
418 {"strip-all", no_argument, 0, 'S'},
419 {"strip-debug", no_argument, 0, 'g'},
420 {"strip-unneeded", no_argument, 0, OPTION_STRIP_UNNEEDED},
421 {"strip-unneeded-symbol", required_argument, 0, OPTION_STRIP_UNNEEDED_SYMBOL},
422 {"strip-unneeded-symbols", required_argument, 0, OPTION_STRIP_UNNEEDED_SYMBOLS},
423 {"strip-symbol", required_argument, 0, 'N'},
424 {"strip-symbols", required_argument, 0, OPTION_STRIP_SYMBOLS},
425 {"target", required_argument, 0, 'F'},
426 {"verbose", no_argument, 0, 'v'},
427 {"version", no_argument, 0, 'V'},
428 {"weaken", no_argument, 0, OPTION_WEAKEN},
429 {"weaken-symbol", required_argument, 0, 'W'},
430 {"weaken-symbols", required_argument, 0, OPTION_WEAKEN_SYMBOLS},
431 {"wildcard", no_argument, 0, 'w'},
432 {"writable-text", no_argument, 0, OPTION_WRITABLE_TEXT},
433 {"file-alignment", required_argument, 0, OPTION_FILE_ALIGNMENT},
434 {"heap", required_argument, 0, OPTION_HEAP},
435 {"image-base", required_argument, 0 , OPTION_IMAGE_BASE},
436 {"section-alignment", required_argument, 0, OPTION_SECTION_ALIGNMENT},
437 {"stack", required_argument, 0, OPTION_STACK},
438 {"subsystem", required_argument, 0, OPTION_SUBSYSTEM},
439 {0, no_argument, 0, 0}
440 };
441
442 /* IMPORTS */
443 extern char *program_name;
444
445 /* This flag distinguishes between strip and objcopy:
446 1 means this is 'strip'; 0 means this is 'objcopy'.
447 -1 means if we should use argv[0] to decide. */
448 extern int is_strip;
449
450 /* The maximum length of an S record. This variable is declared in srec.c
451 and can be modified by the --srec-len parameter. */
452 extern unsigned int Chunk;
453
454 /* Restrict the generation of Srecords to type S3 only.
455 This variable is declare in bfd/srec.c and can be toggled
456 on by the --srec-forceS3 command line switch. */
457 extern bfd_boolean S3Forced;
458
459 /* Forward declarations. */
460 static void setup_section (bfd *, asection *, void *);
461 static void setup_bfd_headers (bfd *, bfd *);
462 static void copy_section (bfd *, asection *, void *);
463 static void get_sections (bfd *, asection *, void *);
464 static int compare_section_lma (const void *, const void *);
465 static void mark_symbols_used_in_relocations (bfd *, asection *, void *);
466 static bfd_boolean write_debugging_info (bfd *, void *, long *, asymbol ***);
467 static const char *lookup_sym_redefinition (const char *);
468 \f
469 static void
470 copy_usage (FILE *stream, int exit_status)
471 {
472 fprintf (stream, _("Usage: %s [option(s)] in-file [out-file]\n"), program_name);
473 fprintf (stream, _(" Copies a binary file, possibly transforming it in the process\n"));
474 fprintf (stream, _(" The options are:\n"));
475 fprintf (stream, _("\
476 -I --input-target <bfdname> Assume input file is in format <bfdname>\n\
477 -O --output-target <bfdname> Create an output file in format <bfdname>\n\
478 -B --binary-architecture <arch> Set output arch, when input is arch-less\n\
479 -F --target <bfdname> Set both input and output format to <bfdname>\n\
480 --debugging Convert debugging information, if possible\n\
481 -p --preserve-dates Copy modified/access timestamps to the output\n\
482 -j --only-section <name> Only copy section <name> into the output\n\
483 --add-gnu-debuglink=<file> Add section .gnu_debuglink linking to <file>\n\
484 -R --remove-section <name> Remove section <name> from the output\n\
485 -S --strip-all Remove all symbol and relocation information\n\
486 -g --strip-debug Remove all debugging symbols & sections\n\
487 --strip-unneeded Remove all symbols not needed by relocations\n\
488 -N --strip-symbol <name> Do not copy symbol <name>\n\
489 --strip-unneeded-symbol <name>\n\
490 Do not copy symbol <name> unless needed by\n\
491 relocations\n\
492 --only-keep-debug Strip everything but the debug information\n\
493 --extract-symbol Remove section contents but keep symbols\n\
494 -K --keep-symbol <name> Do not strip symbol <name>\n\
495 --keep-file-symbols Do not strip file symbol(s)\n\
496 --localize-hidden Turn all ELF hidden symbols into locals\n\
497 -L --localize-symbol <name> Force symbol <name> to be marked as a local\n\
498 --globalize-symbol <name> Force symbol <name> to be marked as a global\n\
499 -G --keep-global-symbol <name> Localize all symbols except <name>\n\
500 -W --weaken-symbol <name> Force symbol <name> to be marked as a weak\n\
501 --weaken Force all global symbols to be marked as weak\n\
502 -w --wildcard Permit wildcard in symbol comparison\n\
503 -x --discard-all Remove all non-global symbols\n\
504 -X --discard-locals Remove any compiler-generated symbols\n\
505 -i --interleave [<number>] Only copy N out of every <number> bytes\n\
506 --interleave-width <number> Set N for --interleave\n\
507 -b --byte <num> Select byte <num> in every interleaved block\n\
508 --gap-fill <val> Fill gaps between sections with <val>\n\
509 --pad-to <addr> Pad the last section up to address <addr>\n\
510 --set-start <addr> Set the start address to <addr>\n\
511 {--change-start|--adjust-start} <incr>\n\
512 Add <incr> to the start address\n\
513 {--change-addresses|--adjust-vma} <incr>\n\
514 Add <incr> to LMA, VMA and start addresses\n\
515 {--change-section-address|--adjust-section-vma} <name>{=|+|-}<val>\n\
516 Change LMA and VMA of section <name> by <val>\n\
517 --change-section-lma <name>{=|+|-}<val>\n\
518 Change the LMA of section <name> by <val>\n\
519 --change-section-vma <name>{=|+|-}<val>\n\
520 Change the VMA of section <name> by <val>\n\
521 {--[no-]change-warnings|--[no-]adjust-warnings}\n\
522 Warn if a named section does not exist\n\
523 --set-section-flags <name>=<flags>\n\
524 Set section <name>'s properties to <flags>\n\
525 --add-section <name>=<file> Add section <name> found in <file> to output\n\
526 --rename-section <old>=<new>[,<flags>] Rename section <old> to <new>\n\
527 --long-section-names {enable|disable|keep}\n\
528 Handle long section names in Coff objects.\n\
529 --change-leading-char Force output format's leading character style\n\
530 --remove-leading-char Remove leading character from global symbols\n\
531 --reverse-bytes=<num> Reverse <num> bytes at a time, in output sections with content\n\
532 --redefine-sym <old>=<new> Redefine symbol name <old> to <new>\n\
533 --redefine-syms <file> --redefine-sym for all symbol pairs \n\
534 listed in <file>\n\
535 --srec-len <number> Restrict the length of generated Srecords\n\
536 --srec-forceS3 Restrict the type of generated Srecords to S3\n\
537 --strip-symbols <file> -N for all symbols listed in <file>\n\
538 --strip-unneeded-symbols <file>\n\
539 --strip-unneeded-symbol for all symbols listed\n\
540 in <file>\n\
541 --keep-symbols <file> -K for all symbols listed in <file>\n\
542 --localize-symbols <file> -L for all symbols listed in <file>\n\
543 --globalize-symbols <file> --globalize-symbol for all in <file>\n\
544 --keep-global-symbols <file> -G for all symbols listed in <file>\n\
545 --weaken-symbols <file> -W for all symbols listed in <file>\n\
546 --alt-machine-code <index> Use the target's <index>'th alternative machine\n\
547 --writable-text Mark the output text as writable\n\
548 --readonly-text Make the output text write protected\n\
549 --pure Mark the output file as demand paged\n\
550 --impure Mark the output file as impure\n\
551 --prefix-symbols <prefix> Add <prefix> to start of every symbol name\n\
552 --prefix-sections <prefix> Add <prefix> to start of every section name\n\
553 --prefix-alloc-sections <prefix>\n\
554 Add <prefix> to start of every allocatable\n\
555 section name\n\
556 --file-alignment <num> Set PE file alignment to <num>\n\
557 --heap <reserve>[,<commit>] Set PE reserve/commit heap to <reserve>/\n\
558 <commit>\n\
559 --image-base <address> Set PE image base to <address>\n\
560 --section-alignment <num> Set PE section alignment to <num>\n\
561 --stack <reserve>[,<commit>] Set PE reserve/commit stack to <reserve>/\n\
562 <commit>\n\
563 --subsystem <name>[:<version>]\n\
564 Set PE subsystem to <name> [& <version>]\n\
565 --compress-debug-sections Compress DWARF debug sections using zlib\n\
566 --decompress-debug-sections Decompress DWARF debug sections using zlib\n\
567 -v --verbose List all object files modified\n\
568 @<file> Read options from <file>\n\
569 -V --version Display this program's version number\n\
570 -h --help Display this output\n\
571 --info List object formats & architectures supported\n\
572 "));
573 list_supported_targets (program_name, stream);
574 if (REPORT_BUGS_TO[0] && exit_status == 0)
575 fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
576 exit (exit_status);
577 }
578
579 static void
580 strip_usage (FILE *stream, int exit_status)
581 {
582 fprintf (stream, _("Usage: %s <option(s)> in-file(s)\n"), program_name);
583 fprintf (stream, _(" Removes symbols and sections from files\n"));
584 fprintf (stream, _(" The options are:\n"));
585 fprintf (stream, _("\
586 -I --input-target=<bfdname> Assume input file is in format <bfdname>\n\
587 -O --output-target=<bfdname> Create an output file in format <bfdname>\n\
588 -F --target=<bfdname> Set both input and output format to <bfdname>\n\
589 -p --preserve-dates Copy modified/access timestamps to the output\n\
590 -R --remove-section=<name> Remove section <name> from the output\n\
591 -s --strip-all Remove all symbol and relocation information\n\
592 -g -S -d --strip-debug Remove all debugging symbols & sections\n\
593 --strip-unneeded Remove all symbols not needed by relocations\n\
594 --only-keep-debug Strip everything but the debug information\n\
595 -N --strip-symbol=<name> Do not copy symbol <name>\n\
596 -K --keep-symbol=<name> Do not strip symbol <name>\n\
597 --keep-file-symbols Do not strip file symbol(s)\n\
598 -w --wildcard Permit wildcard in symbol comparison\n\
599 -x --discard-all Remove all non-global symbols\n\
600 -X --discard-locals Remove any compiler-generated symbols\n\
601 -v --verbose List all object files modified\n\
602 -V --version Display this program's version number\n\
603 -h --help Display this output\n\
604 --info List object formats & architectures supported\n\
605 -o <file> Place stripped output into <file>\n\
606 "));
607
608 list_supported_targets (program_name, stream);
609 if (REPORT_BUGS_TO[0] && exit_status == 0)
610 fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
611 exit (exit_status);
612 }
613
614 /* Parse section flags into a flagword, with a fatal error if the
615 string can't be parsed. */
616
617 static flagword
618 parse_flags (const char *s)
619 {
620 flagword ret;
621 const char *snext;
622 int len;
623
624 ret = SEC_NO_FLAGS;
625
626 do
627 {
628 snext = strchr (s, ',');
629 if (snext == NULL)
630 len = strlen (s);
631 else
632 {
633 len = snext - s;
634 ++snext;
635 }
636
637 if (0) ;
638 #define PARSE_FLAG(fname,fval) \
639 else if (strncasecmp (fname, s, len) == 0) ret |= fval
640 PARSE_FLAG ("alloc", SEC_ALLOC);
641 PARSE_FLAG ("load", SEC_LOAD);
642 PARSE_FLAG ("noload", SEC_NEVER_LOAD);
643 PARSE_FLAG ("readonly", SEC_READONLY);
644 PARSE_FLAG ("debug", SEC_DEBUGGING);
645 PARSE_FLAG ("code", SEC_CODE);
646 PARSE_FLAG ("data", SEC_DATA);
647 PARSE_FLAG ("rom", SEC_ROM);
648 PARSE_FLAG ("share", SEC_COFF_SHARED);
649 PARSE_FLAG ("contents", SEC_HAS_CONTENTS);
650 #undef PARSE_FLAG
651 else
652 {
653 char *copy;
654
655 copy = (char *) xmalloc (len + 1);
656 strncpy (copy, s, len);
657 copy[len] = '\0';
658 non_fatal (_("unrecognized section flag `%s'"), copy);
659 fatal (_("supported flags: %s"),
660 "alloc, load, noload, readonly, debug, code, data, rom, share, contents");
661 }
662
663 s = snext;
664 }
665 while (s != NULL);
666
667 return ret;
668 }
669
670 /* Find and optionally add an entry in the change_sections list. */
671
672 static struct section_list *
673 find_section_list (const char *name, bfd_boolean add)
674 {
675 struct section_list *p;
676
677 for (p = change_sections; p != NULL; p = p->next)
678 if (strcmp (p->name, name) == 0)
679 return p;
680
681 if (! add)
682 return NULL;
683
684 p = (struct section_list *) xmalloc (sizeof (struct section_list));
685 p->name = name;
686 p->used = FALSE;
687 p->remove = FALSE;
688 p->copy = FALSE;
689 p->change_vma = CHANGE_IGNORE;
690 p->change_lma = CHANGE_IGNORE;
691 p->vma_val = 0;
692 p->lma_val = 0;
693 p->set_flags = FALSE;
694 p->flags = 0;
695
696 p->next = change_sections;
697 change_sections = p;
698
699 return p;
700 }
701
702 /* There is htab_hash_string but no htab_eq_string. Makes sense. */
703
704 static int
705 eq_string (const void *s1, const void *s2)
706 {
707 return strcmp ((const char *) s1, (const char *) s2) == 0;
708 }
709
710 static htab_t
711 create_symbol_htab (void)
712 {
713 return htab_create_alloc (16, htab_hash_string, eq_string, NULL, xcalloc, free);
714 }
715
716 static void
717 create_symbol_htabs (void)
718 {
719 strip_specific_htab = create_symbol_htab ();
720 strip_unneeded_htab = create_symbol_htab ();
721 keep_specific_htab = create_symbol_htab ();
722 localize_specific_htab = create_symbol_htab ();
723 globalize_specific_htab = create_symbol_htab ();
724 keepglobal_specific_htab = create_symbol_htab ();
725 weaken_specific_htab = create_symbol_htab ();
726 }
727
728 /* Add a symbol to strip_specific_list. */
729
730 static void
731 add_specific_symbol (const char *name, htab_t htab)
732 {
733 *htab_find_slot (htab, name, INSERT) = (char *) name;
734 }
735
736 /* Add symbols listed in `filename' to strip_specific_list. */
737
738 #define IS_WHITESPACE(c) ((c) == ' ' || (c) == '\t')
739 #define IS_LINE_TERMINATOR(c) ((c) == '\n' || (c) == '\r' || (c) == '\0')
740
741 static void
742 add_specific_symbols (const char *filename, htab_t htab)
743 {
744 off_t size;
745 FILE * f;
746 char * line;
747 char * buffer;
748 unsigned int line_count;
749
750 size = get_file_size (filename);
751 if (size == 0)
752 {
753 status = 1;
754 return;
755 }
756
757 buffer = (char *) xmalloc (size + 2);
758 f = fopen (filename, FOPEN_RT);
759 if (f == NULL)
760 fatal (_("cannot open '%s': %s"), filename, strerror (errno));
761
762 if (fread (buffer, 1, size, f) == 0 || ferror (f))
763 fatal (_("%s: fread failed"), filename);
764
765 fclose (f);
766 buffer [size] = '\n';
767 buffer [size + 1] = '\0';
768
769 line_count = 1;
770
771 for (line = buffer; * line != '\0'; line ++)
772 {
773 char * eol;
774 char * name;
775 char * name_end;
776 int finished = FALSE;
777
778 for (eol = line;; eol ++)
779 {
780 switch (* eol)
781 {
782 case '\n':
783 * eol = '\0';
784 /* Cope with \n\r. */
785 if (eol[1] == '\r')
786 ++ eol;
787 finished = TRUE;
788 break;
789
790 case '\r':
791 * eol = '\0';
792 /* Cope with \r\n. */
793 if (eol[1] == '\n')
794 ++ eol;
795 finished = TRUE;
796 break;
797
798 case 0:
799 finished = TRUE;
800 break;
801
802 case '#':
803 /* Line comment, Terminate the line here, in case a
804 name is present and then allow the rest of the
805 loop to find the real end of the line. */
806 * eol = '\0';
807 break;
808
809 default:
810 break;
811 }
812
813 if (finished)
814 break;
815 }
816
817 /* A name may now exist somewhere between 'line' and 'eol'.
818 Strip off leading whitespace and trailing whitespace,
819 then add it to the list. */
820 for (name = line; IS_WHITESPACE (* name); name ++)
821 ;
822 for (name_end = name;
823 (! IS_WHITESPACE (* name_end))
824 && (! IS_LINE_TERMINATOR (* name_end));
825 name_end ++)
826 ;
827
828 if (! IS_LINE_TERMINATOR (* name_end))
829 {
830 char * extra;
831
832 for (extra = name_end + 1; IS_WHITESPACE (* extra); extra ++)
833 ;
834
835 if (! IS_LINE_TERMINATOR (* extra))
836 non_fatal (_("%s:%d: Ignoring rubbish found on this line"),
837 filename, line_count);
838 }
839
840 * name_end = '\0';
841
842 if (name_end > name)
843 add_specific_symbol (name, htab);
844
845 /* Advance line pointer to end of line. The 'eol ++' in the for
846 loop above will then advance us to the start of the next line. */
847 line = eol;
848 line_count ++;
849 }
850 }
851
852 /* See whether a symbol should be stripped or kept
853 based on strip_specific_list and keep_symbols. */
854
855 static int
856 is_specified_symbol_predicate (void **slot, void *data)
857 {
858 struct is_specified_symbol_predicate_data *d =
859 (struct is_specified_symbol_predicate_data *) data;
860 const char *slot_name = (char *) *slot;
861
862 if (*slot_name != '!')
863 {
864 if (! fnmatch (slot_name, d->name, 0))
865 {
866 d->found = TRUE;
867 /* Stop traversal. */
868 return 0;
869 }
870 }
871 else
872 {
873 if (fnmatch (slot_name + 1, d->name, 0))
874 {
875 d->found = TRUE;
876 /* Stop traversal. */
877 return 0;
878 }
879 }
880
881 /* Continue traversal. */
882 return 1;
883 }
884
885 static bfd_boolean
886 is_specified_symbol (const char *name, htab_t htab)
887 {
888 if (wildcard)
889 {
890 struct is_specified_symbol_predicate_data data;
891
892 data.name = name;
893 data.found = FALSE;
894
895 htab_traverse (htab, is_specified_symbol_predicate, &data);
896
897 return data.found;
898 }
899
900 return htab_find (htab, name) != NULL;
901 }
902
903 /* Return a pointer to the symbol used as a signature for GROUP. */
904
905 static asymbol *
906 group_signature (asection *group)
907 {
908 bfd *abfd = group->owner;
909 Elf_Internal_Shdr *ghdr;
910
911 if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
912 return NULL;
913
914 ghdr = &elf_section_data (group)->this_hdr;
915 if (ghdr->sh_link < elf_numsections (abfd))
916 {
917 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
918 Elf_Internal_Shdr *symhdr = elf_elfsections (abfd) [ghdr->sh_link];
919
920 if (symhdr->sh_type == SHT_SYMTAB
921 && ghdr->sh_info < symhdr->sh_size / bed->s->sizeof_sym)
922 return isympp[ghdr->sh_info - 1];
923 }
924 return NULL;
925 }
926
927 /* See if a non-group section is being removed. */
928
929 static bfd_boolean
930 is_strip_section_1 (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
931 {
932 if (sections_removed || sections_copied)
933 {
934 struct section_list *p;
935
936 p = find_section_list (bfd_get_section_name (abfd, sec), FALSE);
937
938 if (sections_removed && p != NULL && p->remove)
939 return TRUE;
940 if (sections_copied && (p == NULL || ! p->copy))
941 return TRUE;
942 }
943
944 if ((bfd_get_section_flags (abfd, sec) & SEC_DEBUGGING) != 0)
945 {
946 if (strip_symbols == STRIP_DEBUG
947 || strip_symbols == STRIP_UNNEEDED
948 || strip_symbols == STRIP_ALL
949 || discard_locals == LOCALS_ALL
950 || convert_debugging)
951 return TRUE;
952
953 if (strip_symbols == STRIP_NONDEBUG)
954 return FALSE;
955 }
956
957 return FALSE;
958 }
959
960 /* See if a section is being removed. */
961
962 static bfd_boolean
963 is_strip_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
964 {
965 if (is_strip_section_1 (abfd, sec))
966 return TRUE;
967
968 if ((bfd_get_section_flags (abfd, sec) & SEC_GROUP) != 0)
969 {
970 asymbol *gsym;
971 const char *gname;
972 asection *elt, *first;
973
974 /* PR binutils/3181
975 If we are going to strip the group signature symbol, then
976 strip the group section too. */
977 gsym = group_signature (sec);
978 if (gsym != NULL)
979 gname = gsym->name;
980 else
981 gname = sec->name;
982 if ((strip_symbols == STRIP_ALL
983 && !is_specified_symbol (gname, keep_specific_htab))
984 || is_specified_symbol (gname, strip_specific_htab))
985 return TRUE;
986
987 /* Remove the group section if all members are removed. */
988 first = elt = elf_next_in_group (sec);
989 while (elt != NULL)
990 {
991 if (!is_strip_section_1 (abfd, elt))
992 return FALSE;
993 elt = elf_next_in_group (elt);
994 if (elt == first)
995 break;
996 }
997
998 return TRUE;
999 }
1000
1001 return FALSE;
1002 }
1003
1004 /* Return true if SYM is a hidden symbol. */
1005
1006 static bfd_boolean
1007 is_hidden_symbol (asymbol *sym)
1008 {
1009 elf_symbol_type *elf_sym;
1010
1011 elf_sym = elf_symbol_from (sym->the_bfd, sym);
1012 if (elf_sym != NULL)
1013 switch (ELF_ST_VISIBILITY (elf_sym->internal_elf_sym.st_other))
1014 {
1015 case STV_HIDDEN:
1016 case STV_INTERNAL:
1017 return TRUE;
1018 }
1019 return FALSE;
1020 }
1021
1022 /* Choose which symbol entries to copy; put the result in OSYMS.
1023 We don't copy in place, because that confuses the relocs.
1024 Return the number of symbols to print. */
1025
1026 static unsigned int
1027 filter_symbols (bfd *abfd, bfd *obfd, asymbol **osyms,
1028 asymbol **isyms, long symcount)
1029 {
1030 asymbol **from = isyms, **to = osyms;
1031 long src_count = 0, dst_count = 0;
1032 int relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
1033
1034 for (; src_count < symcount; src_count++)
1035 {
1036 asymbol *sym = from[src_count];
1037 flagword flags = sym->flags;
1038 char *name = (char *) bfd_asymbol_name (sym);
1039 bfd_boolean keep;
1040 bfd_boolean used_in_reloc = FALSE;
1041 bfd_boolean undefined;
1042 bfd_boolean rem_leading_char;
1043 bfd_boolean add_leading_char;
1044
1045 undefined = bfd_is_und_section (bfd_get_section (sym));
1046
1047 if (redefine_sym_list)
1048 {
1049 char *old_name, *new_name;
1050
1051 old_name = (char *) bfd_asymbol_name (sym);
1052 new_name = (char *) lookup_sym_redefinition (old_name);
1053 bfd_asymbol_name (sym) = new_name;
1054 name = new_name;
1055 }
1056
1057 /* Check if we will remove the current leading character. */
1058 rem_leading_char =
1059 (name[0] == bfd_get_symbol_leading_char (abfd))
1060 && (change_leading_char
1061 || (remove_leading_char
1062 && ((flags & (BSF_GLOBAL | BSF_WEAK)) != 0
1063 || undefined
1064 || bfd_is_com_section (bfd_get_section (sym)))));
1065
1066 /* Check if we will add a new leading character. */
1067 add_leading_char =
1068 change_leading_char
1069 && (bfd_get_symbol_leading_char (obfd) != '\0')
1070 && (bfd_get_symbol_leading_char (abfd) == '\0'
1071 || (name[0] == bfd_get_symbol_leading_char (abfd)));
1072
1073 /* Short circuit for change_leading_char if we can do it in-place. */
1074 if (rem_leading_char && add_leading_char && !prefix_symbols_string)
1075 {
1076 name[0] = bfd_get_symbol_leading_char (obfd);
1077 bfd_asymbol_name (sym) = name;
1078 rem_leading_char = FALSE;
1079 add_leading_char = FALSE;
1080 }
1081
1082 /* Remove leading char. */
1083 if (rem_leading_char)
1084 bfd_asymbol_name (sym) = ++name;
1085
1086 /* Add new leading char and/or prefix. */
1087 if (add_leading_char || prefix_symbols_string)
1088 {
1089 char *n, *ptr;
1090
1091 ptr = n = (char *) xmalloc (1 + strlen (prefix_symbols_string)
1092 + strlen (name) + 1);
1093 if (add_leading_char)
1094 *ptr++ = bfd_get_symbol_leading_char (obfd);
1095
1096 if (prefix_symbols_string)
1097 {
1098 strcpy (ptr, prefix_symbols_string);
1099 ptr += strlen (prefix_symbols_string);
1100 }
1101
1102 strcpy (ptr, name);
1103 bfd_asymbol_name (sym) = n;
1104 name = n;
1105 }
1106
1107 if (strip_symbols == STRIP_ALL)
1108 keep = FALSE;
1109 else if ((flags & BSF_KEEP) != 0 /* Used in relocation. */
1110 || ((flags & BSF_SECTION_SYM) != 0
1111 && ((*bfd_get_section (sym)->symbol_ptr_ptr)->flags
1112 & BSF_KEEP) != 0))
1113 {
1114 keep = TRUE;
1115 used_in_reloc = TRUE;
1116 }
1117 else if (relocatable /* Relocatable file. */
1118 && ((flags & (BSF_GLOBAL | BSF_WEAK)) != 0
1119 || bfd_is_com_section (bfd_get_section (sym))))
1120 keep = TRUE;
1121 else if (bfd_decode_symclass (sym) == 'I')
1122 /* Global symbols in $idata sections need to be retained
1123 even if relocatable is FALSE. External users of the
1124 library containing the $idata section may reference these
1125 symbols. */
1126 keep = TRUE;
1127 else if ((flags & BSF_GLOBAL) != 0 /* Global symbol. */
1128 || (flags & BSF_WEAK) != 0
1129 || undefined
1130 || bfd_is_com_section (bfd_get_section (sym)))
1131 keep = strip_symbols != STRIP_UNNEEDED;
1132 else if ((flags & BSF_DEBUGGING) != 0) /* Debugging symbol. */
1133 keep = (strip_symbols != STRIP_DEBUG
1134 && strip_symbols != STRIP_UNNEEDED
1135 && ! convert_debugging);
1136 else if (bfd_coff_get_comdat_section (abfd, bfd_get_section (sym)))
1137 /* COMDAT sections store special information in local
1138 symbols, so we cannot risk stripping any of them. */
1139 keep = TRUE;
1140 else /* Local symbol. */
1141 keep = (strip_symbols != STRIP_UNNEEDED
1142 && (discard_locals != LOCALS_ALL
1143 && (discard_locals != LOCALS_START_L
1144 || ! bfd_is_local_label (abfd, sym))));
1145
1146 if (keep && is_specified_symbol (name, strip_specific_htab))
1147 {
1148 /* There are multiple ways to set 'keep' above, but if it
1149 was the relocatable symbol case, then that's an error. */
1150 if (used_in_reloc)
1151 {
1152 non_fatal (_("not stripping symbol `%s' because it is named in a relocation"), name);
1153 status = 1;
1154 }
1155 else
1156 keep = FALSE;
1157 }
1158
1159 if (keep
1160 && !(flags & BSF_KEEP)
1161 && is_specified_symbol (name, strip_unneeded_htab))
1162 keep = FALSE;
1163
1164 if (!keep
1165 && ((keep_file_symbols && (flags & BSF_FILE))
1166 || is_specified_symbol (name, keep_specific_htab)))
1167 keep = TRUE;
1168
1169 if (keep && is_strip_section (abfd, bfd_get_section (sym)))
1170 keep = FALSE;
1171
1172 if (keep)
1173 {
1174 if ((flags & BSF_GLOBAL) != 0
1175 && (weaken || is_specified_symbol (name, weaken_specific_htab)))
1176 {
1177 sym->flags &= ~ BSF_GLOBAL;
1178 sym->flags |= BSF_WEAK;
1179 }
1180
1181 if (!undefined
1182 && (flags & (BSF_GLOBAL | BSF_WEAK))
1183 && (is_specified_symbol (name, localize_specific_htab)
1184 || (htab_elements (keepglobal_specific_htab) != 0
1185 && ! is_specified_symbol (name, keepglobal_specific_htab))
1186 || (localize_hidden && is_hidden_symbol (sym))))
1187 {
1188 sym->flags &= ~ (BSF_GLOBAL | BSF_WEAK);
1189 sym->flags |= BSF_LOCAL;
1190 }
1191
1192 if (!undefined
1193 && (flags & BSF_LOCAL)
1194 && is_specified_symbol (name, globalize_specific_htab))
1195 {
1196 sym->flags &= ~ BSF_LOCAL;
1197 sym->flags |= BSF_GLOBAL;
1198 }
1199
1200 to[dst_count++] = sym;
1201 }
1202 }
1203
1204 to[dst_count] = NULL;
1205
1206 return dst_count;
1207 }
1208
1209 /* Find the redefined name of symbol SOURCE. */
1210
1211 static const char *
1212 lookup_sym_redefinition (const char *source)
1213 {
1214 struct redefine_node *list;
1215
1216 for (list = redefine_sym_list; list != NULL; list = list->next)
1217 if (strcmp (source, list->source) == 0)
1218 return list->target;
1219
1220 return source;
1221 }
1222
1223 /* Add a node to a symbol redefine list. */
1224
1225 static void
1226 redefine_list_append (const char *cause, const char *source, const char *target)
1227 {
1228 struct redefine_node **p;
1229 struct redefine_node *list;
1230 struct redefine_node *new_node;
1231
1232 for (p = &redefine_sym_list; (list = *p) != NULL; p = &list->next)
1233 {
1234 if (strcmp (source, list->source) == 0)
1235 fatal (_("%s: Multiple redefinition of symbol \"%s\""),
1236 cause, source);
1237
1238 if (strcmp (target, list->target) == 0)
1239 fatal (_("%s: Symbol \"%s\" is target of more than one redefinition"),
1240 cause, target);
1241 }
1242
1243 new_node = (struct redefine_node *) xmalloc (sizeof (struct redefine_node));
1244
1245 new_node->source = strdup (source);
1246 new_node->target = strdup (target);
1247 new_node->next = NULL;
1248
1249 *p = new_node;
1250 }
1251
1252 /* Handle the --redefine-syms option. Read lines containing "old new"
1253 from the file, and add them to the symbol redefine list. */
1254
1255 static void
1256 add_redefine_syms_file (const char *filename)
1257 {
1258 FILE *file;
1259 char *buf;
1260 size_t bufsize;
1261 size_t len;
1262 size_t outsym_off;
1263 int c, lineno;
1264
1265 file = fopen (filename, "r");
1266 if (file == NULL)
1267 fatal (_("couldn't open symbol redefinition file %s (error: %s)"),
1268 filename, strerror (errno));
1269
1270 bufsize = 100;
1271 buf = (char *) xmalloc (bufsize + 1 /* For the terminating NUL. */);
1272
1273 lineno = 1;
1274 c = getc (file);
1275 len = 0;
1276 outsym_off = 0;
1277 while (c != EOF)
1278 {
1279 /* Collect the input symbol name. */
1280 while (! IS_WHITESPACE (c) && ! IS_LINE_TERMINATOR (c) && c != EOF)
1281 {
1282 if (c == '#')
1283 goto comment;
1284 buf[len++] = c;
1285 if (len >= bufsize)
1286 {
1287 bufsize *= 2;
1288 buf = (char *) xrealloc (buf, bufsize + 1);
1289 }
1290 c = getc (file);
1291 }
1292 buf[len++] = '\0';
1293 if (c == EOF)
1294 break;
1295
1296 /* Eat white space between the symbol names. */
1297 while (IS_WHITESPACE (c))
1298 c = getc (file);
1299 if (c == '#' || IS_LINE_TERMINATOR (c))
1300 goto comment;
1301 if (c == EOF)
1302 break;
1303
1304 /* Collect the output symbol name. */
1305 outsym_off = len;
1306 while (! IS_WHITESPACE (c) && ! IS_LINE_TERMINATOR (c) && c != EOF)
1307 {
1308 if (c == '#')
1309 goto comment;
1310 buf[len++] = c;
1311 if (len >= bufsize)
1312 {
1313 bufsize *= 2;
1314 buf = (char *) xrealloc (buf, bufsize + 1);
1315 }
1316 c = getc (file);
1317 }
1318 buf[len++] = '\0';
1319 if (c == EOF)
1320 break;
1321
1322 /* Eat white space at end of line. */
1323 while (! IS_LINE_TERMINATOR(c) && c != EOF && IS_WHITESPACE (c))
1324 c = getc (file);
1325 if (c == '#')
1326 goto comment;
1327 /* Handle \r\n. */
1328 if ((c == '\r' && (c = getc (file)) == '\n')
1329 || c == '\n' || c == EOF)
1330 {
1331 end_of_line:
1332 /* Append the redefinition to the list. */
1333 if (buf[0] != '\0')
1334 redefine_list_append (filename, &buf[0], &buf[outsym_off]);
1335
1336 lineno++;
1337 len = 0;
1338 outsym_off = 0;
1339 if (c == EOF)
1340 break;
1341 c = getc (file);
1342 continue;
1343 }
1344 else
1345 fatal (_("%s:%d: garbage found at end of line"), filename, lineno);
1346 comment:
1347 if (len != 0 && (outsym_off == 0 || outsym_off == len))
1348 fatal (_("%s:%d: missing new symbol name"), filename, lineno);
1349 buf[len++] = '\0';
1350
1351 /* Eat the rest of the line and finish it. */
1352 while (c != '\n' && c != EOF)
1353 c = getc (file);
1354 goto end_of_line;
1355 }
1356
1357 if (len != 0)
1358 fatal (_("%s:%d: premature end of file"), filename, lineno);
1359
1360 free (buf);
1361 }
1362
1363 /* Copy unkown object file IBFD onto OBFD.
1364 Returns TRUE upon success, FALSE otherwise. */
1365
1366 static bfd_boolean
1367 copy_unknown_object (bfd *ibfd, bfd *obfd)
1368 {
1369 char *cbuf;
1370 int tocopy;
1371 long ncopied;
1372 long size;
1373 struct stat buf;
1374
1375 if (bfd_stat_arch_elt (ibfd, &buf) != 0)
1376 {
1377 bfd_nonfatal_message (NULL, ibfd, NULL, NULL);
1378 return FALSE;
1379 }
1380
1381 size = buf.st_size;
1382 if (size < 0)
1383 {
1384 non_fatal (_("stat returns negative size for `%s'"),
1385 bfd_get_archive_filename (ibfd));
1386 return FALSE;
1387 }
1388
1389 if (bfd_seek (ibfd, (file_ptr) 0, SEEK_SET) != 0)
1390 {
1391 bfd_nonfatal (bfd_get_archive_filename (ibfd));
1392 return FALSE;
1393 }
1394
1395 if (verbose)
1396 printf (_("copy from `%s' [unknown] to `%s' [unknown]\n"),
1397 bfd_get_archive_filename (ibfd), bfd_get_filename (obfd));
1398
1399 cbuf = (char *) xmalloc (BUFSIZE);
1400 ncopied = 0;
1401 while (ncopied < size)
1402 {
1403 tocopy = size - ncopied;
1404 if (tocopy > BUFSIZE)
1405 tocopy = BUFSIZE;
1406
1407 if (bfd_bread (cbuf, (bfd_size_type) tocopy, ibfd)
1408 != (bfd_size_type) tocopy)
1409 {
1410 bfd_nonfatal_message (NULL, ibfd, NULL, NULL);
1411 free (cbuf);
1412 return FALSE;
1413 }
1414
1415 if (bfd_bwrite (cbuf, (bfd_size_type) tocopy, obfd)
1416 != (bfd_size_type) tocopy)
1417 {
1418 bfd_nonfatal_message (NULL, obfd, NULL, NULL);
1419 free (cbuf);
1420 return FALSE;
1421 }
1422
1423 ncopied += tocopy;
1424 }
1425
1426 /* We should at least to be able to read it back when copying an
1427 unknown object in an archive. */
1428 chmod (bfd_get_filename (obfd), buf.st_mode | S_IRUSR);
1429 free (cbuf);
1430 return TRUE;
1431 }
1432
1433 /* Copy object file IBFD onto OBFD.
1434 Returns TRUE upon success, FALSE otherwise. */
1435
1436 static bfd_boolean
1437 copy_object (bfd *ibfd, bfd *obfd, const bfd_arch_info_type *input_arch)
1438 {
1439 bfd_vma start;
1440 long symcount;
1441 asection **osections = NULL;
1442 asection *gnu_debuglink_section = NULL;
1443 bfd_size_type *gaps = NULL;
1444 bfd_size_type max_gap = 0;
1445 long symsize;
1446 void *dhandle;
1447 enum bfd_architecture iarch;
1448 unsigned int imach;
1449
1450 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
1451 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
1452 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
1453 fatal (_("Unable to change endianness of input file(s)"));
1454
1455 if (!bfd_set_format (obfd, bfd_get_format (ibfd)))
1456 {
1457 bfd_nonfatal_message (NULL, obfd, NULL, NULL);
1458 return FALSE;
1459 }
1460
1461 if (verbose)
1462 printf (_("copy from `%s' [%s] to `%s' [%s]\n"),
1463 bfd_get_archive_filename (ibfd), bfd_get_target (ibfd),
1464 bfd_get_filename (obfd), bfd_get_target (obfd));
1465
1466 if (extract_symbol)
1467 start = 0;
1468 else
1469 {
1470 if (set_start_set)
1471 start = set_start;
1472 else
1473 start = bfd_get_start_address (ibfd);
1474 start += change_start;
1475 }
1476
1477 /* Neither the start address nor the flags
1478 need to be set for a core file. */
1479 if (bfd_get_format (obfd) != bfd_core)
1480 {
1481 flagword flags;
1482
1483 flags = bfd_get_file_flags (ibfd);
1484 flags |= bfd_flags_to_set;
1485 flags &= ~bfd_flags_to_clear;
1486 flags &= bfd_applicable_file_flags (obfd);
1487
1488 if (strip_symbols == STRIP_ALL)
1489 flags &= ~HAS_RELOC;
1490
1491 if (!bfd_set_start_address (obfd, start)
1492 || !bfd_set_file_flags (obfd, flags))
1493 {
1494 bfd_nonfatal_message (NULL, ibfd, NULL, NULL);
1495 return FALSE;
1496 }
1497 }
1498
1499 /* Copy architecture of input file to output file. */
1500 iarch = bfd_get_arch (ibfd);
1501 imach = bfd_get_mach (ibfd);
1502 if (input_arch)
1503 {
1504 if (bfd_get_arch_info (ibfd) == NULL
1505 || bfd_get_arch_info (ibfd)->arch == bfd_arch_unknown)
1506 {
1507 iarch = input_arch->arch;
1508 imach = input_arch->mach;
1509 }
1510 else
1511 non_fatal (_("Input file `%s' ignores binary architecture parameter."),
1512 bfd_get_archive_filename (ibfd));
1513 }
1514 if (!bfd_set_arch_mach (obfd, iarch, imach)
1515 && (ibfd->target_defaulted
1516 || bfd_get_arch (ibfd) != bfd_get_arch (obfd)))
1517 {
1518 if (bfd_get_arch (ibfd) == bfd_arch_unknown)
1519 non_fatal (_("Unable to recognise the format of the input file `%s'"),
1520 bfd_get_archive_filename (ibfd));
1521 else
1522 non_fatal (_("Output file cannot represent architecture `%s'"),
1523 bfd_printable_arch_mach (bfd_get_arch (ibfd),
1524 bfd_get_mach (ibfd)));
1525 return FALSE;
1526 }
1527
1528 if (!bfd_set_format (obfd, bfd_get_format (ibfd)))
1529 {
1530 bfd_nonfatal_message (NULL, ibfd, NULL, NULL);
1531 return FALSE;
1532 }
1533
1534 if (bfd_get_flavour (obfd) == bfd_target_coff_flavour
1535 && bfd_pei_p (obfd))
1536 {
1537 /* Set up PE parameters. */
1538 pe_data_type *pe = pe_data (obfd);
1539
1540 /* Copy PE parameters before changing them. */
1541 if (ibfd->xvec->flavour == bfd_target_coff_flavour
1542 && bfd_pei_p (ibfd))
1543 pe->pe_opthdr = pe_data (ibfd)->pe_opthdr;
1544
1545 if (pe_file_alignment != (bfd_vma) -1)
1546 pe->pe_opthdr.FileAlignment = pe_file_alignment;
1547 else
1548 pe_file_alignment = PE_DEF_FILE_ALIGNMENT;
1549
1550 if (pe_heap_commit != (bfd_vma) -1)
1551 pe->pe_opthdr.SizeOfHeapCommit = pe_heap_commit;
1552
1553 if (pe_heap_reserve != (bfd_vma) -1)
1554 pe->pe_opthdr.SizeOfHeapCommit = pe_heap_reserve;
1555
1556 if (pe_image_base != (bfd_vma) -1)
1557 pe->pe_opthdr.ImageBase = pe_image_base;
1558
1559 if (pe_section_alignment != (bfd_vma) -1)
1560 pe->pe_opthdr.SectionAlignment = pe_section_alignment;
1561 else
1562 pe_section_alignment = PE_DEF_SECTION_ALIGNMENT;
1563
1564 if (pe_stack_commit != (bfd_vma) -1)
1565 pe->pe_opthdr.SizeOfStackCommit = pe_stack_commit;
1566
1567 if (pe_stack_reserve != (bfd_vma) -1)
1568 pe->pe_opthdr.SizeOfStackCommit = pe_stack_reserve;
1569
1570 if (pe_subsystem != -1)
1571 pe->pe_opthdr.Subsystem = pe_subsystem;
1572
1573 if (pe_major_subsystem_version != -1)
1574 pe->pe_opthdr.MajorSubsystemVersion = pe_major_subsystem_version;
1575
1576 if (pe_minor_subsystem_version != -1)
1577 pe->pe_opthdr.MinorSubsystemVersion = pe_minor_subsystem_version;
1578
1579 if (pe_file_alignment > pe_section_alignment)
1580 {
1581 char file_alignment[20], section_alignment[20];
1582
1583 sprintf_vma (file_alignment, pe_file_alignment);
1584 sprintf_vma (section_alignment, pe_section_alignment);
1585 non_fatal (_("warning: file alignment (0x%s) > section alignment (0x%s)"),
1586
1587 file_alignment, section_alignment);
1588 }
1589 }
1590
1591 if (isympp)
1592 free (isympp);
1593
1594 if (osympp != isympp)
1595 free (osympp);
1596
1597 isympp = NULL;
1598 osympp = NULL;
1599
1600 symsize = bfd_get_symtab_upper_bound (ibfd);
1601 if (symsize < 0)
1602 {
1603 bfd_nonfatal_message (NULL, ibfd, NULL, NULL);
1604 return FALSE;
1605 }
1606
1607 osympp = isympp = (asymbol **) xmalloc (symsize);
1608 symcount = bfd_canonicalize_symtab (ibfd, isympp);
1609 if (symcount < 0)
1610 {
1611 bfd_nonfatal_message (NULL, ibfd, NULL, NULL);
1612 return FALSE;
1613 }
1614
1615 /* BFD mandates that all output sections be created and sizes set before
1616 any output is done. Thus, we traverse all sections multiple times. */
1617 bfd_map_over_sections (ibfd, setup_section, obfd);
1618
1619 if (!extract_symbol)
1620 setup_bfd_headers (ibfd, obfd);
1621
1622 if (add_sections != NULL)
1623 {
1624 struct section_add *padd;
1625 struct section_list *pset;
1626
1627 for (padd = add_sections; padd != NULL; padd = padd->next)
1628 {
1629 flagword flags;
1630
1631 pset = find_section_list (padd->name, FALSE);
1632 if (pset != NULL)
1633 pset->used = TRUE;
1634
1635 flags = SEC_HAS_CONTENTS | SEC_READONLY | SEC_DATA;
1636 if (pset != NULL && pset->set_flags)
1637 flags = pset->flags | SEC_HAS_CONTENTS;
1638
1639 /* bfd_make_section_with_flags() does not return very helpful
1640 error codes, so check for the most likely user error first. */
1641 if (bfd_get_section_by_name (obfd, padd->name))
1642 {
1643 bfd_nonfatal_message (NULL, obfd, NULL,
1644 _("can't add section '%s'"), padd->name);
1645 return FALSE;
1646 }
1647 else
1648 {
1649 /* We use LINKER_CREATED here so that the backend hooks
1650 will create any special section type information,
1651 instead of presuming we know what we're doing merely
1652 because we set the flags. */
1653 padd->section = bfd_make_section_with_flags
1654 (obfd, padd->name, flags | SEC_LINKER_CREATED);
1655 if (padd->section == NULL)
1656 {
1657 bfd_nonfatal_message (NULL, obfd, NULL,
1658 _("can't create section `%s'"),
1659 padd->name);
1660 return FALSE;
1661 }
1662 }
1663
1664 if (! bfd_set_section_size (obfd, padd->section, padd->size))
1665 {
1666 bfd_nonfatal_message (NULL, obfd, padd->section, NULL);
1667 return FALSE;
1668 }
1669
1670 if (pset != NULL)
1671 {
1672 if (pset->change_vma != CHANGE_IGNORE)
1673 if (! bfd_set_section_vma (obfd, padd->section,
1674 pset->vma_val))
1675 {
1676 bfd_nonfatal_message (NULL, obfd, padd->section, NULL);
1677 return FALSE;
1678 }
1679
1680 if (pset->change_lma != CHANGE_IGNORE)
1681 {
1682 padd->section->lma = pset->lma_val;
1683
1684 if (! bfd_set_section_alignment
1685 (obfd, padd->section,
1686 bfd_section_alignment (obfd, padd->section)))
1687 {
1688 bfd_nonfatal_message (NULL, obfd, padd->section, NULL);
1689 return FALSE;
1690 }
1691 }
1692 }
1693 }
1694 }
1695
1696 if (gnu_debuglink_filename != NULL)
1697 {
1698 gnu_debuglink_section = bfd_create_gnu_debuglink_section
1699 (obfd, gnu_debuglink_filename);
1700
1701 if (gnu_debuglink_section == NULL)
1702 {
1703 bfd_nonfatal_message (NULL, obfd, NULL,
1704 _("cannot create debug link section `%s'"),
1705 gnu_debuglink_filename);
1706 return FALSE;
1707 }
1708
1709 /* Special processing for PE format files. We
1710 have no way to distinguish PE from COFF here. */
1711 if (bfd_get_flavour (obfd) == bfd_target_coff_flavour)
1712 {
1713 bfd_vma debuglink_vma;
1714 asection * highest_section;
1715 asection * sec;
1716
1717 /* The PE spec requires that all sections be adjacent and sorted
1718 in ascending order of VMA. It also specifies that debug
1719 sections should be last. This is despite the fact that debug
1720 sections are not loaded into memory and so in theory have no
1721 use for a VMA.
1722
1723 This means that the debuglink section must be given a non-zero
1724 VMA which makes it contiguous with other debug sections. So
1725 walk the current section list, find the section with the
1726 highest VMA and start the debuglink section after that one. */
1727 for (sec = obfd->sections, highest_section = NULL;
1728 sec != NULL;
1729 sec = sec->next)
1730 if (sec->vma > 0
1731 && (highest_section == NULL
1732 || sec->vma > highest_section->vma))
1733 highest_section = sec;
1734
1735 if (highest_section)
1736 debuglink_vma = BFD_ALIGN (highest_section->vma
1737 + highest_section->size,
1738 /* FIXME: We ought to be using
1739 COFF_PAGE_SIZE here or maybe
1740 bfd_get_section_alignment() (if it
1741 was set) but since this is for PE
1742 and we know the required alignment
1743 it is easier just to hard code it. */
1744 0x1000);
1745 else
1746 /* Umm, not sure what to do in this case. */
1747 debuglink_vma = 0x1000;
1748
1749 bfd_set_section_vma (obfd, gnu_debuglink_section, debuglink_vma);
1750 }
1751 }
1752
1753 if (bfd_count_sections (obfd) != 0
1754 && (gap_fill_set || pad_to_set))
1755 {
1756 asection **set;
1757 unsigned int c, i;
1758
1759 /* We must fill in gaps between the sections and/or we must pad
1760 the last section to a specified address. We do this by
1761 grabbing a list of the sections, sorting them by VMA, and
1762 increasing the section sizes as required to fill the gaps.
1763 We write out the gap contents below. */
1764
1765 c = bfd_count_sections (obfd);
1766 osections = (asection **) xmalloc (c * sizeof (asection *));
1767 set = osections;
1768 bfd_map_over_sections (obfd, get_sections, &set);
1769
1770 qsort (osections, c, sizeof (asection *), compare_section_lma);
1771
1772 gaps = (bfd_size_type *) xmalloc (c * sizeof (bfd_size_type));
1773 memset (gaps, 0, c * sizeof (bfd_size_type));
1774
1775 if (gap_fill_set)
1776 {
1777 for (i = 0; i < c - 1; i++)
1778 {
1779 flagword flags;
1780 bfd_size_type size;
1781 bfd_vma gap_start, gap_stop;
1782
1783 flags = bfd_get_section_flags (obfd, osections[i]);
1784 if ((flags & SEC_HAS_CONTENTS) == 0
1785 || (flags & SEC_LOAD) == 0)
1786 continue;
1787
1788 size = bfd_section_size (obfd, osections[i]);
1789 gap_start = bfd_section_lma (obfd, osections[i]) + size;
1790 gap_stop = bfd_section_lma (obfd, osections[i + 1]);
1791 if (gap_start < gap_stop)
1792 {
1793 if (! bfd_set_section_size (obfd, osections[i],
1794 size + (gap_stop - gap_start)))
1795 {
1796 bfd_nonfatal_message (NULL, obfd, osections[i],
1797 _("Can't fill gap after section"));
1798 status = 1;
1799 break;
1800 }
1801 gaps[i] = gap_stop - gap_start;
1802 if (max_gap < gap_stop - gap_start)
1803 max_gap = gap_stop - gap_start;
1804 }
1805 }
1806 }
1807
1808 if (pad_to_set)
1809 {
1810 bfd_vma lma;
1811 bfd_size_type size;
1812
1813 lma = bfd_section_lma (obfd, osections[c - 1]);
1814 size = bfd_section_size (obfd, osections[c - 1]);
1815 if (lma + size < pad_to)
1816 {
1817 if (! bfd_set_section_size (obfd, osections[c - 1],
1818 pad_to - lma))
1819 {
1820 bfd_nonfatal_message (NULL, obfd, osections[c - 1],
1821 _("can't add padding"));
1822 status = 1;
1823 }
1824 else
1825 {
1826 gaps[c - 1] = pad_to - (lma + size);
1827 if (max_gap < pad_to - (lma + size))
1828 max_gap = pad_to - (lma + size);
1829 }
1830 }
1831 }
1832 }
1833
1834 /* Symbol filtering must happen after the output sections
1835 have been created, but before their contents are set. */
1836 dhandle = NULL;
1837 if (convert_debugging)
1838 dhandle = read_debugging_info (ibfd, isympp, symcount, FALSE);
1839
1840 if (strip_symbols == STRIP_DEBUG
1841 || strip_symbols == STRIP_ALL
1842 || strip_symbols == STRIP_UNNEEDED
1843 || strip_symbols == STRIP_NONDEBUG
1844 || discard_locals != LOCALS_UNDEF
1845 || localize_hidden
1846 || htab_elements (strip_specific_htab) != 0
1847 || htab_elements (keep_specific_htab) != 0
1848 || htab_elements (localize_specific_htab) != 0
1849 || htab_elements (globalize_specific_htab) != 0
1850 || htab_elements (keepglobal_specific_htab) != 0
1851 || htab_elements (weaken_specific_htab) != 0
1852 || prefix_symbols_string
1853 || sections_removed
1854 || sections_copied
1855 || convert_debugging
1856 || change_leading_char
1857 || remove_leading_char
1858 || redefine_sym_list
1859 || weaken)
1860 {
1861 /* Mark symbols used in output relocations so that they
1862 are kept, even if they are local labels or static symbols.
1863
1864 Note we iterate over the input sections examining their
1865 relocations since the relocations for the output sections
1866 haven't been set yet. mark_symbols_used_in_relocations will
1867 ignore input sections which have no corresponding output
1868 section. */
1869 if (strip_symbols != STRIP_ALL)
1870 bfd_map_over_sections (ibfd,
1871 mark_symbols_used_in_relocations,
1872 isympp);
1873 osympp = (asymbol **) xmalloc ((symcount + 1) * sizeof (asymbol *));
1874 symcount = filter_symbols (ibfd, obfd, osympp, isympp, symcount);
1875 }
1876
1877 if (convert_debugging && dhandle != NULL)
1878 {
1879 if (! write_debugging_info (obfd, dhandle, &symcount, &osympp))
1880 {
1881 status = 1;
1882 return FALSE;
1883 }
1884 }
1885
1886 bfd_set_symtab (obfd, osympp, symcount);
1887
1888 /* This has to happen after the symbol table has been set. */
1889 bfd_map_over_sections (ibfd, copy_section, obfd);
1890
1891 if (add_sections != NULL)
1892 {
1893 struct section_add *padd;
1894
1895 for (padd = add_sections; padd != NULL; padd = padd->next)
1896 {
1897 if (! bfd_set_section_contents (obfd, padd->section, padd->contents,
1898 0, padd->size))
1899 {
1900 bfd_nonfatal_message (NULL, obfd, padd->section, NULL);
1901 return FALSE;
1902 }
1903 }
1904 }
1905
1906 if (gnu_debuglink_filename != NULL)
1907 {
1908 if (! bfd_fill_in_gnu_debuglink_section
1909 (obfd, gnu_debuglink_section, gnu_debuglink_filename))
1910 {
1911 bfd_nonfatal_message (NULL, obfd, NULL,
1912 _("cannot fill debug link section `%s'"),
1913 gnu_debuglink_filename);
1914 return FALSE;
1915 }
1916 }
1917
1918 if (gap_fill_set || pad_to_set)
1919 {
1920 bfd_byte *buf;
1921 int c, i;
1922
1923 /* Fill in the gaps. */
1924 if (max_gap > 8192)
1925 max_gap = 8192;
1926 buf = (bfd_byte *) xmalloc (max_gap);
1927 memset (buf, gap_fill, max_gap);
1928
1929 c = bfd_count_sections (obfd);
1930 for (i = 0; i < c; i++)
1931 {
1932 if (gaps[i] != 0)
1933 {
1934 bfd_size_type left;
1935 file_ptr off;
1936
1937 left = gaps[i];
1938 off = bfd_section_size (obfd, osections[i]) - left;
1939
1940 while (left > 0)
1941 {
1942 bfd_size_type now;
1943
1944 if (left > 8192)
1945 now = 8192;
1946 else
1947 now = left;
1948
1949 if (! bfd_set_section_contents (obfd, osections[i], buf,
1950 off, now))
1951 {
1952 bfd_nonfatal_message (NULL, obfd, osections[i], NULL);
1953 return FALSE;
1954 }
1955
1956 left -= now;
1957 off += now;
1958 }
1959 }
1960 }
1961 }
1962
1963 /* Do not copy backend data if --extract-symbol is passed; anything
1964 that needs to look at the section contents will fail. */
1965 if (extract_symbol)
1966 return TRUE;
1967
1968 /* Allow the BFD backend to copy any private data it understands
1969 from the input BFD to the output BFD. This is done last to
1970 permit the routine to look at the filtered symbol table, which is
1971 important for the ECOFF code at least. */
1972 if (! bfd_copy_private_bfd_data (ibfd, obfd))
1973 {
1974 bfd_nonfatal_message (NULL, obfd, NULL,
1975 _("error copying private BFD data"));
1976 return FALSE;
1977 }
1978
1979 /* Switch to the alternate machine code. We have to do this at the
1980 very end, because we only initialize the header when we create
1981 the first section. */
1982 if (use_alt_mach_code != 0)
1983 {
1984 if (! bfd_alt_mach_code (obfd, use_alt_mach_code))
1985 {
1986 non_fatal (_("this target does not support %lu alternative machine codes"),
1987 use_alt_mach_code);
1988 if (bfd_get_flavour (obfd) == bfd_target_elf_flavour)
1989 {
1990 non_fatal (_("treating that number as an absolute e_machine value instead"));
1991 elf_elfheader (obfd)->e_machine = use_alt_mach_code;
1992 }
1993 else
1994 non_fatal (_("ignoring the alternative value"));
1995 }
1996 }
1997
1998 return TRUE;
1999 }
2000
2001 /* Read each archive element in turn from IBFD, copy the
2002 contents to temp file, and keep the temp file handle.
2003 If 'force_output_target' is TRUE then make sure that
2004 all elements in the new archive are of the type
2005 'output_target'. */
2006
2007 static void
2008 copy_archive (bfd *ibfd, bfd *obfd, const char *output_target,
2009 bfd_boolean force_output_target,
2010 const bfd_arch_info_type *input_arch)
2011 {
2012 struct name_list
2013 {
2014 struct name_list *next;
2015 const char *name;
2016 bfd *obfd;
2017 } *list, *l;
2018 bfd **ptr = &obfd->archive_head;
2019 bfd *this_element;
2020 char *dir;
2021 const char *filename;
2022
2023 /* Make a temp directory to hold the contents. */
2024 dir = make_tempdir (bfd_get_filename (obfd));
2025 if (dir == NULL)
2026 fatal (_("cannot create tempdir for archive copying (error: %s)"),
2027 strerror (errno));
2028
2029 obfd->has_armap = ibfd->has_armap;
2030 obfd->is_thin_archive = ibfd->is_thin_archive;
2031
2032 list = NULL;
2033
2034 this_element = bfd_openr_next_archived_file (ibfd, NULL);
2035
2036 if (!bfd_set_format (obfd, bfd_get_format (ibfd)))
2037 {
2038 status = 1;
2039 bfd_nonfatal_message (NULL, obfd, NULL, NULL);
2040 return;
2041 }
2042
2043 while (!status && this_element != NULL)
2044 {
2045 char *output_name;
2046 bfd *output_bfd;
2047 bfd *last_element;
2048 struct stat buf;
2049 int stat_status = 0;
2050 bfd_boolean del = TRUE;
2051 bfd_boolean ok_object;
2052
2053 /* Create an output file for this member. */
2054 output_name = concat (dir, "/",
2055 bfd_get_filename (this_element), (char *) 0);
2056
2057 /* If the file already exists, make another temp dir. */
2058 if (stat (output_name, &buf) >= 0)
2059 {
2060 output_name = make_tempdir (output_name);
2061 if (output_name == NULL)
2062 fatal (_("cannot create tempdir for archive copying (error: %s)"),
2063 strerror (errno));
2064
2065 l = (struct name_list *) xmalloc (sizeof (struct name_list));
2066 l->name = output_name;
2067 l->next = list;
2068 l->obfd = NULL;
2069 list = l;
2070 output_name = concat (output_name, "/",
2071 bfd_get_filename (this_element), (char *) 0);
2072 }
2073
2074 if (preserve_dates)
2075 {
2076 stat_status = bfd_stat_arch_elt (this_element, &buf);
2077
2078 if (stat_status != 0)
2079 non_fatal (_("internal stat error on %s"),
2080 bfd_get_filename (this_element));
2081 }
2082
2083 l = (struct name_list *) xmalloc (sizeof (struct name_list));
2084 l->name = output_name;
2085 l->next = list;
2086 l->obfd = NULL;
2087 list = l;
2088
2089 ok_object = bfd_check_format (this_element, bfd_object);
2090 if (!ok_object)
2091 bfd_nonfatal_message (NULL, this_element, NULL,
2092 _("Unable to recognise the format of file"));
2093
2094 /* PR binutils/3110: Cope with archives
2095 containing multiple target types. */
2096 if (force_output_target || !ok_object)
2097 output_bfd = bfd_openw (output_name, output_target);
2098 else
2099 output_bfd = bfd_openw (output_name, bfd_get_target (this_element));
2100
2101 if (output_bfd == NULL)
2102 {
2103 bfd_nonfatal_message (output_name, NULL, NULL, NULL);
2104 status = 1;
2105 return;
2106 }
2107
2108 if (ok_object)
2109 {
2110 del = !copy_object (this_element, output_bfd, input_arch);
2111
2112 if (del && bfd_get_arch (this_element) == bfd_arch_unknown)
2113 /* Try again as an unknown object file. */
2114 ok_object = FALSE;
2115 else if (!bfd_close (output_bfd))
2116 {
2117 bfd_nonfatal_message (output_name, NULL, NULL, NULL);
2118 /* Error in new object file. Don't change archive. */
2119 status = 1;
2120 }
2121 }
2122
2123 if (!ok_object)
2124 {
2125 del = !copy_unknown_object (this_element, output_bfd);
2126 if (!bfd_close_all_done (output_bfd))
2127 {
2128 bfd_nonfatal_message (output_name, NULL, NULL, NULL);
2129 /* Error in new object file. Don't change archive. */
2130 status = 1;
2131 }
2132 }
2133
2134 if (del)
2135 {
2136 unlink (output_name);
2137 status = 1;
2138 }
2139 else
2140 {
2141 if (preserve_dates && stat_status == 0)
2142 set_times (output_name, &buf);
2143
2144 /* Open the newly output file and attach to our list. */
2145 output_bfd = bfd_openr (output_name, output_target);
2146
2147 l->obfd = output_bfd;
2148
2149 *ptr = output_bfd;
2150 ptr = &output_bfd->archive_next;
2151
2152 last_element = this_element;
2153
2154 this_element = bfd_openr_next_archived_file (ibfd, last_element);
2155
2156 bfd_close (last_element);
2157 }
2158 }
2159 *ptr = NULL;
2160
2161 filename = bfd_get_filename (obfd);
2162 if (!bfd_close (obfd))
2163 {
2164 status = 1;
2165 bfd_nonfatal_message (filename, NULL, NULL, NULL);
2166 return;
2167 }
2168
2169 filename = bfd_get_filename (ibfd);
2170 if (!bfd_close (ibfd))
2171 {
2172 status = 1;
2173 bfd_nonfatal_message (filename, NULL, NULL, NULL);
2174 return;
2175 }
2176
2177 /* Delete all the files that we opened. */
2178 for (l = list; l != NULL; l = l->next)
2179 {
2180 if (l->obfd == NULL)
2181 rmdir (l->name);
2182 else
2183 {
2184 bfd_close (l->obfd);
2185 unlink (l->name);
2186 }
2187 }
2188 rmdir (dir);
2189 }
2190
2191 static void
2192 set_long_section_mode (bfd *output_bfd, bfd *input_bfd, enum long_section_name_handling style)
2193 {
2194 /* This is only relevant to Coff targets. */
2195 if (bfd_get_flavour (output_bfd) == bfd_target_coff_flavour)
2196 {
2197 if (style == KEEP
2198 && bfd_get_flavour (input_bfd) == bfd_target_coff_flavour)
2199 style = bfd_coff_long_section_names (input_bfd) ? ENABLE : DISABLE;
2200 bfd_coff_set_long_section_names (output_bfd, style != DISABLE);
2201 }
2202 }
2203
2204 /* The top-level control. */
2205
2206 static void
2207 copy_file (const char *input_filename, const char *output_filename,
2208 const char *input_target, const char *output_target,
2209 const bfd_arch_info_type *input_arch)
2210 {
2211 bfd *ibfd;
2212 char **obj_matching;
2213 char **core_matching;
2214 off_t size = get_file_size (input_filename);
2215
2216 if (size < 1)
2217 {
2218 if (size == 0)
2219 non_fatal (_("error: the input file '%s' is empty"),
2220 input_filename);
2221 status = 1;
2222 return;
2223 }
2224
2225 /* To allow us to do "strip *" without dying on the first
2226 non-object file, failures are nonfatal. */
2227 ibfd = bfd_openr (input_filename, input_target);
2228 if (ibfd == NULL)
2229 {
2230 bfd_nonfatal_message (input_filename, NULL, NULL, NULL);
2231 status = 1;
2232 return;
2233 }
2234
2235 switch (do_debug_sections)
2236 {
2237 case compress:
2238 ibfd->flags |= BFD_COMPRESS;
2239 break;
2240 case decompress:
2241 ibfd->flags |= BFD_DECOMPRESS;
2242 break;
2243 default:
2244 break;
2245 }
2246
2247 if (bfd_check_format (ibfd, bfd_archive))
2248 {
2249 bfd_boolean force_output_target;
2250 bfd *obfd;
2251
2252 /* bfd_get_target does not return the correct value until
2253 bfd_check_format succeeds. */
2254 if (output_target == NULL)
2255 {
2256 output_target = bfd_get_target (ibfd);
2257 force_output_target = FALSE;
2258 }
2259 else
2260 force_output_target = TRUE;
2261
2262 obfd = bfd_openw (output_filename, output_target);
2263 if (obfd == NULL)
2264 {
2265 bfd_nonfatal_message (output_filename, NULL, NULL, NULL);
2266 status = 1;
2267 return;
2268 }
2269 /* This is a no-op on non-Coff targets. */
2270 set_long_section_mode (obfd, ibfd, long_section_names);
2271
2272 copy_archive (ibfd, obfd, output_target, force_output_target, input_arch);
2273 }
2274 else if (bfd_check_format_matches (ibfd, bfd_object, &obj_matching))
2275 {
2276 bfd *obfd;
2277 do_copy:
2278
2279 /* bfd_get_target does not return the correct value until
2280 bfd_check_format succeeds. */
2281 if (output_target == NULL)
2282 output_target = bfd_get_target (ibfd);
2283
2284 obfd = bfd_openw (output_filename, output_target);
2285 if (obfd == NULL)
2286 {
2287 bfd_nonfatal_message (output_filename, NULL, NULL, NULL);
2288 status = 1;
2289 return;
2290 }
2291 /* This is a no-op on non-Coff targets. */
2292 set_long_section_mode (obfd, ibfd, long_section_names);
2293
2294 if (! copy_object (ibfd, obfd, input_arch))
2295 status = 1;
2296
2297 if (!bfd_close (obfd))
2298 {
2299 status = 1;
2300 bfd_nonfatal_message (output_filename, NULL, NULL, NULL);
2301 return;
2302 }
2303
2304 if (!bfd_close (ibfd))
2305 {
2306 status = 1;
2307 bfd_nonfatal_message (input_filename, NULL, NULL, NULL);
2308 return;
2309 }
2310 }
2311 else
2312 {
2313 bfd_error_type obj_error = bfd_get_error ();
2314 bfd_error_type core_error;
2315
2316 if (bfd_check_format_matches (ibfd, bfd_core, &core_matching))
2317 {
2318 /* This probably can't happen.. */
2319 if (obj_error == bfd_error_file_ambiguously_recognized)
2320 free (obj_matching);
2321 goto do_copy;
2322 }
2323
2324 core_error = bfd_get_error ();
2325 /* Report the object error in preference to the core error. */
2326 if (obj_error != core_error)
2327 bfd_set_error (obj_error);
2328
2329 bfd_nonfatal_message (input_filename, NULL, NULL, NULL);
2330
2331 if (obj_error == bfd_error_file_ambiguously_recognized)
2332 {
2333 list_matching_formats (obj_matching);
2334 free (obj_matching);
2335 }
2336 if (core_error == bfd_error_file_ambiguously_recognized)
2337 {
2338 list_matching_formats (core_matching);
2339 free (core_matching);
2340 }
2341
2342 status = 1;
2343 }
2344 }
2345
2346 /* Add a name to the section renaming list. */
2347
2348 static void
2349 add_section_rename (const char * old_name, const char * new_name,
2350 flagword flags)
2351 {
2352 section_rename * srename;
2353
2354 /* Check for conflicts first. */
2355 for (srename = section_rename_list; srename != NULL; srename = srename->next)
2356 if (strcmp (srename->old_name, old_name) == 0)
2357 {
2358 /* Silently ignore duplicate definitions. */
2359 if (strcmp (srename->new_name, new_name) == 0
2360 && srename->flags == flags)
2361 return;
2362
2363 fatal (_("Multiple renames of section %s"), old_name);
2364 }
2365
2366 srename = (section_rename *) xmalloc (sizeof (* srename));
2367
2368 srename->old_name = old_name;
2369 srename->new_name = new_name;
2370 srename->flags = flags;
2371 srename->next = section_rename_list;
2372
2373 section_rename_list = srename;
2374 }
2375
2376 /* Check the section rename list for a new name of the input section
2377 ISECTION. Return the new name if one is found.
2378 Also set RETURNED_FLAGS to the flags to be used for this section. */
2379
2380 static const char *
2381 find_section_rename (bfd * ibfd ATTRIBUTE_UNUSED, sec_ptr isection,
2382 flagword * returned_flags)
2383 {
2384 const char * old_name = bfd_section_name (ibfd, isection);
2385 section_rename * srename;
2386
2387 /* Default to using the flags of the input section. */
2388 * returned_flags = bfd_get_section_flags (ibfd, isection);
2389
2390 for (srename = section_rename_list; srename != NULL; srename = srename->next)
2391 if (strcmp (srename->old_name, old_name) == 0)
2392 {
2393 if (srename->flags != (flagword) -1)
2394 * returned_flags = srename->flags;
2395
2396 return srename->new_name;
2397 }
2398
2399 return old_name;
2400 }
2401
2402 /* Once each of the sections is copied, we may still need to do some
2403 finalization work for private section headers. Do that here. */
2404
2405 static void
2406 setup_bfd_headers (bfd *ibfd, bfd *obfd)
2407 {
2408 /* Allow the BFD backend to copy any private data it understands
2409 from the input section to the output section. */
2410 if (! bfd_copy_private_header_data (ibfd, obfd))
2411 {
2412 status = 1;
2413 bfd_nonfatal_message (NULL, ibfd, NULL,
2414 _("error in private header data"));
2415 return;
2416 }
2417
2418 /* All went well. */
2419 return;
2420 }
2421
2422 /* Create a section in OBFD with the same
2423 name and attributes as ISECTION in IBFD. */
2424
2425 static void
2426 setup_section (bfd *ibfd, sec_ptr isection, void *obfdarg)
2427 {
2428 bfd *obfd = (bfd *) obfdarg;
2429 struct section_list *p;
2430 sec_ptr osection;
2431 bfd_size_type size;
2432 bfd_vma vma;
2433 bfd_vma lma;
2434 flagword flags;
2435 const char *err;
2436 const char * name;
2437 char *prefix = NULL;
2438 bfd_boolean make_nobits;
2439
2440 if (is_strip_section (ibfd, isection))
2441 return;
2442
2443 p = find_section_list (bfd_section_name (ibfd, isection), FALSE);
2444 if (p != NULL)
2445 p->used = TRUE;
2446
2447 /* Get the, possibly new, name of the output section. */
2448 name = find_section_rename (ibfd, isection, & flags);
2449
2450 /* Prefix sections. */
2451 if ((prefix_alloc_sections_string)
2452 && (bfd_get_section_flags (ibfd, isection) & SEC_ALLOC))
2453 prefix = prefix_alloc_sections_string;
2454 else if (prefix_sections_string)
2455 prefix = prefix_sections_string;
2456
2457 if (prefix)
2458 {
2459 char *n;
2460
2461 n = (char *) xmalloc (strlen (prefix) + strlen (name) + 1);
2462 strcpy (n, prefix);
2463 strcat (n, name);
2464 name = n;
2465 }
2466
2467 make_nobits = FALSE;
2468 if (p != NULL && p->set_flags)
2469 flags = p->flags | (flags & (SEC_HAS_CONTENTS | SEC_RELOC));
2470 else if (strip_symbols == STRIP_NONDEBUG
2471 && (flags & (SEC_ALLOC | SEC_GROUP)) != 0
2472 && !(ibfd->xvec->flavour == bfd_target_elf_flavour
2473 && elf_section_type (isection) == SHT_NOTE))
2474 {
2475 flags &= ~(SEC_HAS_CONTENTS | SEC_LOAD | SEC_GROUP);
2476 if (obfd->xvec->flavour == bfd_target_elf_flavour)
2477 {
2478 make_nobits = TRUE;
2479
2480 /* Twiddle the input section flags so that it seems to
2481 elf.c:copy_private_bfd_data that section flags have not
2482 changed between input and output sections. This hack
2483 prevents wholesale rewriting of the program headers. */
2484 isection->flags &= ~(SEC_HAS_CONTENTS | SEC_LOAD | SEC_GROUP);
2485 }
2486 }
2487
2488 osection = bfd_make_section_anyway_with_flags (obfd, name, flags);
2489
2490 if (osection == NULL)
2491 {
2492 err = _("failed to create output section");
2493 goto loser;
2494 }
2495
2496 if (make_nobits)
2497 elf_section_type (osection) = SHT_NOBITS;
2498
2499 size = bfd_section_size (ibfd, isection);
2500 if (copy_byte >= 0)
2501 size = (size + interleave - 1) / interleave * copy_width;
2502 else if (extract_symbol)
2503 size = 0;
2504 if (! bfd_set_section_size (obfd, osection, size))
2505 {
2506 err = _("failed to set size");
2507 goto loser;
2508 }
2509
2510 vma = bfd_section_vma (ibfd, isection);
2511 if (p != NULL && p->change_vma == CHANGE_MODIFY)
2512 vma += p->vma_val;
2513 else if (p != NULL && p->change_vma == CHANGE_SET)
2514 vma = p->vma_val;
2515 else
2516 vma += change_section_address;
2517
2518 if (! bfd_set_section_vma (obfd, osection, vma))
2519 {
2520 err = _("failed to set vma");
2521 goto loser;
2522 }
2523
2524 lma = isection->lma;
2525 if ((p != NULL) && p->change_lma != CHANGE_IGNORE)
2526 {
2527 if (p->change_lma == CHANGE_MODIFY)
2528 lma += p->lma_val;
2529 else if (p->change_lma == CHANGE_SET)
2530 lma = p->lma_val;
2531 else
2532 abort ();
2533 }
2534 else
2535 lma += change_section_address;
2536
2537 osection->lma = lma;
2538
2539 /* FIXME: This is probably not enough. If we change the LMA we
2540 may have to recompute the header for the file as well. */
2541 if (!bfd_set_section_alignment (obfd,
2542 osection,
2543 bfd_section_alignment (ibfd, isection)))
2544 {
2545 err = _("failed to set alignment");
2546 goto loser;
2547 }
2548
2549 /* Copy merge entity size. */
2550 osection->entsize = isection->entsize;
2551
2552 /* This used to be mangle_section; we do here to avoid using
2553 bfd_get_section_by_name since some formats allow multiple
2554 sections with the same name. */
2555 isection->output_section = osection;
2556 isection->output_offset = 0;
2557
2558 /* Do not copy backend data if --extract-symbol is passed; anything
2559 that needs to look at the section contents will fail. */
2560 if (extract_symbol)
2561 return;
2562
2563 if ((isection->flags & SEC_GROUP) != 0)
2564 {
2565 asymbol *gsym = group_signature (isection);
2566
2567 if (gsym != NULL)
2568 {
2569 gsym->flags |= BSF_KEEP;
2570 if (ibfd->xvec->flavour == bfd_target_elf_flavour)
2571 elf_group_id (isection) = gsym;
2572 }
2573 }
2574
2575 /* Allow the BFD backend to copy any private data it understands
2576 from the input section to the output section. */
2577 if (!bfd_copy_private_section_data (ibfd, isection, obfd, osection))
2578 {
2579 err = _("failed to copy private data");
2580 goto loser;
2581 }
2582
2583 /* All went well. */
2584 return;
2585
2586 loser:
2587 status = 1;
2588 bfd_nonfatal_message (NULL, obfd, osection, err);
2589 }
2590
2591 /* Copy the data of input section ISECTION of IBFD
2592 to an output section with the same name in OBFD.
2593 If stripping then don't copy any relocation info. */
2594
2595 static void
2596 copy_section (bfd *ibfd, sec_ptr isection, void *obfdarg)
2597 {
2598 bfd *obfd = (bfd *) obfdarg;
2599 struct section_list *p;
2600 arelent **relpp;
2601 long relcount;
2602 sec_ptr osection;
2603 bfd_size_type size;
2604 long relsize;
2605 flagword flags;
2606
2607 /* If we have already failed earlier on,
2608 do not keep on generating complaints now. */
2609 if (status != 0)
2610 return;
2611
2612 if (is_strip_section (ibfd, isection))
2613 return;
2614
2615 flags = bfd_get_section_flags (ibfd, isection);
2616 if ((flags & SEC_GROUP) != 0)
2617 return;
2618
2619 osection = isection->output_section;
2620 size = bfd_get_section_size (isection);
2621
2622 if (size == 0 || osection == 0)
2623 return;
2624
2625 if (extract_symbol)
2626 return;
2627
2628 p = find_section_list (bfd_get_section_name (ibfd, isection), FALSE);
2629
2630 /* Core files do not need to be relocated. */
2631 if (bfd_get_format (obfd) == bfd_core)
2632 relsize = 0;
2633 else
2634 {
2635 relsize = bfd_get_reloc_upper_bound (ibfd, isection);
2636
2637 if (relsize < 0)
2638 {
2639 /* Do not complain if the target does not support relocations. */
2640 if (relsize == -1 && bfd_get_error () == bfd_error_invalid_operation)
2641 relsize = 0;
2642 else
2643 {
2644 status = 1;
2645 bfd_nonfatal_message (NULL, ibfd, isection, NULL);
2646 return;
2647 }
2648 }
2649 }
2650
2651 if (relsize == 0)
2652 bfd_set_reloc (obfd, osection, NULL, 0);
2653 else
2654 {
2655 relpp = (arelent **) xmalloc (relsize);
2656 relcount = bfd_canonicalize_reloc (ibfd, isection, relpp, isympp);
2657 if (relcount < 0)
2658 {
2659 status = 1;
2660 bfd_nonfatal_message (NULL, ibfd, isection,
2661 _("relocation count is negative"));
2662 return;
2663 }
2664
2665 if (strip_symbols == STRIP_ALL)
2666 {
2667 /* Remove relocations which are not in
2668 keep_strip_specific_list. */
2669 arelent **temp_relpp;
2670 long temp_relcount = 0;
2671 long i;
2672
2673 temp_relpp = (arelent **) xmalloc (relsize);
2674 for (i = 0; i < relcount; i++)
2675 if (is_specified_symbol (bfd_asymbol_name (*relpp[i]->sym_ptr_ptr),
2676 keep_specific_htab))
2677 temp_relpp [temp_relcount++] = relpp [i];
2678 relcount = temp_relcount;
2679 free (relpp);
2680 relpp = temp_relpp;
2681 }
2682
2683 bfd_set_reloc (obfd, osection, relcount == 0 ? NULL : relpp, relcount);
2684 if (relcount == 0)
2685 free (relpp);
2686 }
2687
2688 if (bfd_get_section_flags (ibfd, isection) & SEC_HAS_CONTENTS
2689 && bfd_get_section_flags (obfd, osection) & SEC_HAS_CONTENTS)
2690 {
2691 bfd_byte *memhunk = NULL;
2692
2693 if (!bfd_get_full_section_contents (ibfd, isection, &memhunk))
2694 {
2695 status = 1;
2696 bfd_nonfatal_message (NULL, ibfd, isection, NULL);
2697 return;
2698 }
2699
2700 if (reverse_bytes)
2701 {
2702 /* We don't handle leftover bytes (too many possible behaviors,
2703 and we don't know what the user wants). The section length
2704 must be a multiple of the number of bytes to swap. */
2705 if ((size % reverse_bytes) == 0)
2706 {
2707 unsigned long i, j;
2708 bfd_byte b;
2709
2710 for (i = 0; i < size; i += reverse_bytes)
2711 for (j = 0; j < (unsigned long)(reverse_bytes / 2); j++)
2712 {
2713 bfd_byte *m = (bfd_byte *) memhunk;
2714
2715 b = m[i + j];
2716 m[i + j] = m[(i + reverse_bytes) - (j + 1)];
2717 m[(i + reverse_bytes) - (j + 1)] = b;
2718 }
2719 }
2720 else
2721 /* User must pad the section up in order to do this. */
2722 fatal (_("cannot reverse bytes: length of section %s must be evenly divisible by %d"),
2723 bfd_section_name (ibfd, isection), reverse_bytes);
2724 }
2725
2726 if (copy_byte >= 0)
2727 {
2728 /* Keep only every `copy_byte'th byte in MEMHUNK. */
2729 char *from = (char *) memhunk + copy_byte;
2730 char *to = (char *) memhunk;
2731 char *end = (char *) memhunk + size;
2732 int i;
2733
2734 for (; from < end; from += interleave)
2735 for (i = 0; i < copy_width; i++)
2736 *to++ = from[i];
2737
2738 size = (size + interleave - 1 - copy_byte) / interleave * copy_width;
2739 osection->lma /= interleave;
2740 }
2741
2742 if (!bfd_set_section_contents (obfd, osection, memhunk, 0, size))
2743 {
2744 status = 1;
2745 bfd_nonfatal_message (NULL, obfd, osection, NULL);
2746 return;
2747 }
2748 free (memhunk);
2749 }
2750 else if (p != NULL && p->set_flags && (p->flags & SEC_HAS_CONTENTS) != 0)
2751 {
2752 void *memhunk = xmalloc (size);
2753
2754 /* We don't permit the user to turn off the SEC_HAS_CONTENTS
2755 flag--they can just remove the section entirely and add it
2756 back again. However, we do permit them to turn on the
2757 SEC_HAS_CONTENTS flag, and take it to mean that the section
2758 contents should be zeroed out. */
2759
2760 memset (memhunk, 0, size);
2761 if (! bfd_set_section_contents (obfd, osection, memhunk, 0, size))
2762 {
2763 status = 1;
2764 bfd_nonfatal_message (NULL, obfd, osection, NULL);
2765 return;
2766 }
2767 free (memhunk);
2768 }
2769 }
2770
2771 /* Get all the sections. This is used when --gap-fill or --pad-to is
2772 used. */
2773
2774 static void
2775 get_sections (bfd *obfd ATTRIBUTE_UNUSED, asection *osection, void *secppparg)
2776 {
2777 asection ***secppp = (asection ***) secppparg;
2778
2779 **secppp = osection;
2780 ++(*secppp);
2781 }
2782
2783 /* Sort sections by VMA. This is called via qsort, and is used when
2784 --gap-fill or --pad-to is used. We force non loadable or empty
2785 sections to the front, where they are easier to ignore. */
2786
2787 static int
2788 compare_section_lma (const void *arg1, const void *arg2)
2789 {
2790 const asection *const *sec1 = (const asection * const *) arg1;
2791 const asection *const *sec2 = (const asection * const *) arg2;
2792 flagword flags1, flags2;
2793
2794 /* Sort non loadable sections to the front. */
2795 flags1 = (*sec1)->flags;
2796 flags2 = (*sec2)->flags;
2797 if ((flags1 & SEC_HAS_CONTENTS) == 0
2798 || (flags1 & SEC_LOAD) == 0)
2799 {
2800 if ((flags2 & SEC_HAS_CONTENTS) != 0
2801 && (flags2 & SEC_LOAD) != 0)
2802 return -1;
2803 }
2804 else
2805 {
2806 if ((flags2 & SEC_HAS_CONTENTS) == 0
2807 || (flags2 & SEC_LOAD) == 0)
2808 return 1;
2809 }
2810
2811 /* Sort sections by LMA. */
2812 if ((*sec1)->lma > (*sec2)->lma)
2813 return 1;
2814 else if ((*sec1)->lma < (*sec2)->lma)
2815 return -1;
2816
2817 /* Sort sections with the same LMA by size. */
2818 if (bfd_get_section_size (*sec1) > bfd_get_section_size (*sec2))
2819 return 1;
2820 else if (bfd_get_section_size (*sec1) < bfd_get_section_size (*sec2))
2821 return -1;
2822
2823 return 0;
2824 }
2825
2826 /* Mark all the symbols which will be used in output relocations with
2827 the BSF_KEEP flag so that those symbols will not be stripped.
2828
2829 Ignore relocations which will not appear in the output file. */
2830
2831 static void
2832 mark_symbols_used_in_relocations (bfd *ibfd, sec_ptr isection, void *symbolsarg)
2833 {
2834 asymbol **symbols = (asymbol **) symbolsarg;
2835 long relsize;
2836 arelent **relpp;
2837 long relcount, i;
2838
2839 /* Ignore an input section with no corresponding output section. */
2840 if (isection->output_section == NULL)
2841 return;
2842
2843 relsize = bfd_get_reloc_upper_bound (ibfd, isection);
2844 if (relsize < 0)
2845 {
2846 /* Do not complain if the target does not support relocations. */
2847 if (relsize == -1 && bfd_get_error () == bfd_error_invalid_operation)
2848 return;
2849 bfd_fatal (bfd_get_filename (ibfd));
2850 }
2851
2852 if (relsize == 0)
2853 return;
2854
2855 relpp = (arelent **) xmalloc (relsize);
2856 relcount = bfd_canonicalize_reloc (ibfd, isection, relpp, symbols);
2857 if (relcount < 0)
2858 bfd_fatal (bfd_get_filename (ibfd));
2859
2860 /* Examine each symbol used in a relocation. If it's not one of the
2861 special bfd section symbols, then mark it with BSF_KEEP. */
2862 for (i = 0; i < relcount; i++)
2863 {
2864 if (*relpp[i]->sym_ptr_ptr != bfd_com_section_ptr->symbol
2865 && *relpp[i]->sym_ptr_ptr != bfd_abs_section_ptr->symbol
2866 && *relpp[i]->sym_ptr_ptr != bfd_und_section_ptr->symbol)
2867 (*relpp[i]->sym_ptr_ptr)->flags |= BSF_KEEP;
2868 }
2869
2870 if (relpp != NULL)
2871 free (relpp);
2872 }
2873
2874 /* Write out debugging information. */
2875
2876 static bfd_boolean
2877 write_debugging_info (bfd *obfd, void *dhandle,
2878 long *symcountp ATTRIBUTE_UNUSED,
2879 asymbol ***symppp ATTRIBUTE_UNUSED)
2880 {
2881 if (bfd_get_flavour (obfd) == bfd_target_ieee_flavour)
2882 return write_ieee_debugging_info (obfd, dhandle);
2883
2884 if (bfd_get_flavour (obfd) == bfd_target_coff_flavour
2885 || bfd_get_flavour (obfd) == bfd_target_elf_flavour)
2886 {
2887 bfd_byte *syms, *strings;
2888 bfd_size_type symsize, stringsize;
2889 asection *stabsec, *stabstrsec;
2890 flagword flags;
2891
2892 if (! write_stabs_in_sections_debugging_info (obfd, dhandle, &syms,
2893 &symsize, &strings,
2894 &stringsize))
2895 return FALSE;
2896
2897 flags = SEC_HAS_CONTENTS | SEC_READONLY | SEC_DEBUGGING;
2898 stabsec = bfd_make_section_with_flags (obfd, ".stab", flags);
2899 stabstrsec = bfd_make_section_with_flags (obfd, ".stabstr", flags);
2900 if (stabsec == NULL
2901 || stabstrsec == NULL
2902 || ! bfd_set_section_size (obfd, stabsec, symsize)
2903 || ! bfd_set_section_size (obfd, stabstrsec, stringsize)
2904 || ! bfd_set_section_alignment (obfd, stabsec, 2)
2905 || ! bfd_set_section_alignment (obfd, stabstrsec, 0))
2906 {
2907 bfd_nonfatal_message (NULL, obfd, NULL,
2908 _("can't create debugging section"));
2909 return FALSE;
2910 }
2911
2912 /* We can get away with setting the section contents now because
2913 the next thing the caller is going to do is copy over the
2914 real sections. We may someday have to split the contents
2915 setting out of this function. */
2916 if (! bfd_set_section_contents (obfd, stabsec, syms, 0, symsize)
2917 || ! bfd_set_section_contents (obfd, stabstrsec, strings, 0,
2918 stringsize))
2919 {
2920 bfd_nonfatal_message (NULL, obfd, NULL,
2921 _("can't set debugging section contents"));
2922 return FALSE;
2923 }
2924
2925 return TRUE;
2926 }
2927
2928 bfd_nonfatal_message (NULL, obfd, NULL,
2929 _("don't know how to write debugging information for %s"),
2930 bfd_get_target (obfd));
2931 return FALSE;
2932 }
2933
2934 static int
2935 strip_main (int argc, char *argv[])
2936 {
2937 char *input_target = NULL;
2938 char *output_target = NULL;
2939 bfd_boolean show_version = FALSE;
2940 bfd_boolean formats_info = FALSE;
2941 int c;
2942 int i;
2943 struct section_list *p;
2944 char *output_file = NULL;
2945
2946 while ((c = getopt_long (argc, argv, "I:O:F:K:N:R:o:sSpdgxXHhVvw",
2947 strip_options, (int *) 0)) != EOF)
2948 {
2949 switch (c)
2950 {
2951 case 'I':
2952 input_target = optarg;
2953 break;
2954 case 'O':
2955 output_target = optarg;
2956 break;
2957 case 'F':
2958 input_target = output_target = optarg;
2959 break;
2960 case 'R':
2961 p = find_section_list (optarg, TRUE);
2962 p->remove = TRUE;
2963 sections_removed = TRUE;
2964 break;
2965 case 's':
2966 strip_symbols = STRIP_ALL;
2967 break;
2968 case 'S':
2969 case 'g':
2970 case 'd': /* Historic BSD alias for -g. Used by early NetBSD. */
2971 strip_symbols = STRIP_DEBUG;
2972 break;
2973 case OPTION_STRIP_UNNEEDED:
2974 strip_symbols = STRIP_UNNEEDED;
2975 break;
2976 case 'K':
2977 add_specific_symbol (optarg, keep_specific_htab);
2978 break;
2979 case 'N':
2980 add_specific_symbol (optarg, strip_specific_htab);
2981 break;
2982 case 'o':
2983 output_file = optarg;
2984 break;
2985 case 'p':
2986 preserve_dates = TRUE;
2987 break;
2988 case 'x':
2989 discard_locals = LOCALS_ALL;
2990 break;
2991 case 'X':
2992 discard_locals = LOCALS_START_L;
2993 break;
2994 case 'v':
2995 verbose = TRUE;
2996 break;
2997 case 'V':
2998 show_version = TRUE;
2999 break;
3000 case OPTION_FORMATS_INFO:
3001 formats_info = TRUE;
3002 break;
3003 case OPTION_ONLY_KEEP_DEBUG:
3004 strip_symbols = STRIP_NONDEBUG;
3005 break;
3006 case OPTION_KEEP_FILE_SYMBOLS:
3007 keep_file_symbols = 1;
3008 break;
3009 case 0:
3010 /* We've been given a long option. */
3011 break;
3012 case 'w':
3013 wildcard = TRUE;
3014 break;
3015 case 'H':
3016 case 'h':
3017 strip_usage (stdout, 0);
3018 default:
3019 strip_usage (stderr, 1);
3020 }
3021 }
3022
3023 if (formats_info)
3024 {
3025 display_info ();
3026 return 0;
3027 }
3028
3029 if (show_version)
3030 print_version ("strip");
3031
3032 /* Default is to strip all symbols. */
3033 if (strip_symbols == STRIP_UNDEF
3034 && discard_locals == LOCALS_UNDEF
3035 && htab_elements (strip_specific_htab) == 0)
3036 strip_symbols = STRIP_ALL;
3037
3038 if (output_target == NULL)
3039 output_target = input_target;
3040
3041 i = optind;
3042 if (i == argc
3043 || (output_file != NULL && (i + 1) < argc))
3044 strip_usage (stderr, 1);
3045
3046 for (; i < argc; i++)
3047 {
3048 int hold_status = status;
3049 struct stat statbuf;
3050 char *tmpname;
3051
3052 if (get_file_size (argv[i]) < 1)
3053 {
3054 status = 1;
3055 continue;
3056 }
3057
3058 if (preserve_dates)
3059 /* No need to check the return value of stat().
3060 It has already been checked in get_file_size(). */
3061 stat (argv[i], &statbuf);
3062
3063 if (output_file == NULL
3064 || filename_cmp (argv[i], output_file) == 0)
3065 tmpname = make_tempname (argv[i]);
3066 else
3067 tmpname = output_file;
3068
3069 if (tmpname == NULL)
3070 {
3071 bfd_nonfatal_message (argv[i], NULL, NULL,
3072 _("could not create temporary file to hold stripped copy"));
3073 status = 1;
3074 continue;
3075 }
3076
3077 status = 0;
3078 copy_file (argv[i], tmpname, input_target, output_target, NULL);
3079 if (status == 0)
3080 {
3081 if (preserve_dates)
3082 set_times (tmpname, &statbuf);
3083 if (output_file != tmpname)
3084 status = (smart_rename (tmpname,
3085 output_file ? output_file : argv[i],
3086 preserve_dates) != 0);
3087 if (status == 0)
3088 status = hold_status;
3089 }
3090 else
3091 unlink_if_ordinary (tmpname);
3092 if (output_file != tmpname)
3093 free (tmpname);
3094 }
3095
3096 return status;
3097 }
3098
3099 /* Set up PE subsystem. */
3100
3101 static void
3102 set_pe_subsystem (const char *s)
3103 {
3104 const char *version, *subsystem;
3105 size_t i;
3106 static const struct
3107 {
3108 const char *name;
3109 const char set_def;
3110 const short value;
3111 }
3112 v[] =
3113 {
3114 { "native", 0, IMAGE_SUBSYSTEM_NATIVE },
3115 { "windows", 0, IMAGE_SUBSYSTEM_WINDOWS_GUI },
3116 { "console", 0, IMAGE_SUBSYSTEM_WINDOWS_CUI },
3117 { "posix", 0, IMAGE_SUBSYSTEM_POSIX_CUI },
3118 { "wince", 0, IMAGE_SUBSYSTEM_WINDOWS_CE_GUI },
3119 { "efi-app", 1, IMAGE_SUBSYSTEM_EFI_APPLICATION },
3120 { "efi-bsd", 1, IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER },
3121 { "efi-rtd", 1, IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER },
3122 { "sal-rtd", 1, IMAGE_SUBSYSTEM_SAL_RUNTIME_DRIVER },
3123 { "xbox", 0, IMAGE_SUBSYSTEM_XBOX }
3124 };
3125 short value;
3126 char *copy;
3127 int set_def = -1;
3128
3129 /* Check for the presence of a version number. */
3130 version = strchr (s, ':');
3131 if (version == NULL)
3132 subsystem = s;
3133 else
3134 {
3135 int len = version - s;
3136 copy = xstrdup (s);
3137 subsystem = copy;
3138 copy[len] = '\0';
3139 version = copy + 1 + len;
3140 pe_major_subsystem_version = strtoul (version, &copy, 0);
3141 if (*copy == '.')
3142 pe_minor_subsystem_version = strtoul (copy + 1, &copy, 0);
3143 if (*copy != '\0')
3144 non_fatal (_("%s: bad version in PE subsystem"), s);
3145 }
3146
3147 /* Check for numeric subsystem. */
3148 value = (short) strtol (subsystem, &copy, 0);
3149 if (*copy == '\0')
3150 {
3151 for (i = 0; i < ARRAY_SIZE (v); i++)
3152 if (v[i].value == value)
3153 {
3154 pe_subsystem = value;
3155 set_def = v[i].set_def;
3156 break;
3157 }
3158 }
3159 else
3160 {
3161 /* Search for subsystem by name. */
3162 for (i = 0; i < ARRAY_SIZE (v); i++)
3163 if (strcmp (subsystem, v[i].name) == 0)
3164 {
3165 pe_subsystem = v[i].value;
3166 set_def = v[i].set_def;
3167 break;
3168 }
3169 }
3170
3171 switch (set_def)
3172 {
3173 case -1:
3174 fatal (_("unknown PE subsystem: %s"), s);
3175 break;
3176 case 0:
3177 break;
3178 default:
3179 if (pe_file_alignment == (bfd_vma) -1)
3180 pe_file_alignment = PE_DEF_FILE_ALIGNMENT;
3181 if (pe_section_alignment == (bfd_vma) -1)
3182 pe_section_alignment = PE_DEF_SECTION_ALIGNMENT;
3183 break;
3184 }
3185 if (s != subsystem)
3186 free ((char *) subsystem);
3187 }
3188
3189 /* Convert EFI target to PEI target. */
3190
3191 static void
3192 convert_efi_target (char *efi)
3193 {
3194 efi[0] = 'p';
3195 efi[1] = 'e';
3196 efi[2] = 'i';
3197
3198 if (strcmp (efi + 4, "ia32") == 0)
3199 {
3200 /* Change ia32 to i386. */
3201 efi[5]= '3';
3202 efi[6]= '8';
3203 efi[7]= '6';
3204 }
3205 else if (strcmp (efi + 4, "x86_64") == 0)
3206 {
3207 /* Change x86_64 to x86-64. */
3208 efi[7] = '-';
3209 }
3210 }
3211
3212 static int
3213 copy_main (int argc, char *argv[])
3214 {
3215 char *input_filename = NULL;
3216 char *output_filename = NULL;
3217 char *tmpname;
3218 char *input_target = NULL;
3219 char *output_target = NULL;
3220 bfd_boolean show_version = FALSE;
3221 bfd_boolean change_warn = TRUE;
3222 bfd_boolean formats_info = FALSE;
3223 int c;
3224 struct section_list *p;
3225 struct stat statbuf;
3226 const bfd_arch_info_type *input_arch = NULL;
3227
3228 while ((c = getopt_long (argc, argv, "b:B:i:I:j:K:N:s:O:d:F:L:G:R:SpgxXHhVvW:w",
3229 copy_options, (int *) 0)) != EOF)
3230 {
3231 switch (c)
3232 {
3233 case 'b':
3234 copy_byte = atoi (optarg);
3235 if (copy_byte < 0)
3236 fatal (_("byte number must be non-negative"));
3237 break;
3238
3239 case 'B':
3240 input_arch = bfd_scan_arch (optarg);
3241 if (input_arch == NULL)
3242 fatal (_("architecture %s unknown"), optarg);
3243 break;
3244
3245 case 'i':
3246 if (optarg)
3247 {
3248 interleave = atoi (optarg);
3249 if (interleave < 1)
3250 fatal (_("interleave must be positive"));
3251 }
3252 else
3253 interleave = 4;
3254 break;
3255
3256 case OPTION_INTERLEAVE_WIDTH:
3257 copy_width = atoi (optarg);
3258 if (copy_width < 1)
3259 fatal(_("interleave width must be positive"));
3260 break;
3261
3262 case 'I':
3263 case 's': /* "source" - 'I' is preferred */
3264 input_target = optarg;
3265 break;
3266
3267 case 'O':
3268 case 'd': /* "destination" - 'O' is preferred */
3269 output_target = optarg;
3270 break;
3271
3272 case 'F':
3273 input_target = output_target = optarg;
3274 break;
3275
3276 case 'j':
3277 p = find_section_list (optarg, TRUE);
3278 if (p->remove)
3279 fatal (_("%s both copied and removed"), optarg);
3280 p->copy = TRUE;
3281 sections_copied = TRUE;
3282 break;
3283
3284 case 'R':
3285 p = find_section_list (optarg, TRUE);
3286 if (p->copy)
3287 fatal (_("%s both copied and removed"), optarg);
3288 p->remove = TRUE;
3289 sections_removed = TRUE;
3290 break;
3291
3292 case 'S':
3293 strip_symbols = STRIP_ALL;
3294 break;
3295
3296 case 'g':
3297 strip_symbols = STRIP_DEBUG;
3298 break;
3299
3300 case OPTION_STRIP_UNNEEDED:
3301 strip_symbols = STRIP_UNNEEDED;
3302 break;
3303
3304 case OPTION_ONLY_KEEP_DEBUG:
3305 strip_symbols = STRIP_NONDEBUG;
3306 break;
3307
3308 case OPTION_KEEP_FILE_SYMBOLS:
3309 keep_file_symbols = 1;
3310 break;
3311
3312 case OPTION_ADD_GNU_DEBUGLINK:
3313 gnu_debuglink_filename = optarg;
3314 break;
3315
3316 case 'K':
3317 add_specific_symbol (optarg, keep_specific_htab);
3318 break;
3319
3320 case 'N':
3321 add_specific_symbol (optarg, strip_specific_htab);
3322 break;
3323
3324 case OPTION_STRIP_UNNEEDED_SYMBOL:
3325 add_specific_symbol (optarg, strip_unneeded_htab);
3326 break;
3327
3328 case 'L':
3329 add_specific_symbol (optarg, localize_specific_htab);
3330 break;
3331
3332 case OPTION_GLOBALIZE_SYMBOL:
3333 add_specific_symbol (optarg, globalize_specific_htab);
3334 break;
3335
3336 case 'G':
3337 add_specific_symbol (optarg, keepglobal_specific_htab);
3338 break;
3339
3340 case 'W':
3341 add_specific_symbol (optarg, weaken_specific_htab);
3342 break;
3343
3344 case 'p':
3345 preserve_dates = TRUE;
3346 break;
3347
3348 case 'w':
3349 wildcard = TRUE;
3350 break;
3351
3352 case 'x':
3353 discard_locals = LOCALS_ALL;
3354 break;
3355
3356 case 'X':
3357 discard_locals = LOCALS_START_L;
3358 break;
3359
3360 case 'v':
3361 verbose = TRUE;
3362 break;
3363
3364 case 'V':
3365 show_version = TRUE;
3366 break;
3367
3368 case OPTION_FORMATS_INFO:
3369 formats_info = TRUE;
3370 break;
3371
3372 case OPTION_WEAKEN:
3373 weaken = TRUE;
3374 break;
3375
3376 case OPTION_ADD_SECTION:
3377 {
3378 const char *s;
3379 size_t off, alloc;
3380 struct section_add *pa;
3381 FILE *f;
3382
3383 s = strchr (optarg, '=');
3384
3385 if (s == NULL)
3386 fatal (_("bad format for %s"), "--add-section");
3387
3388 pa = (struct section_add *) xmalloc (sizeof (struct section_add));
3389 pa->name = xstrndup (optarg, s - optarg);
3390 pa->filename = s + 1;
3391
3392 /* We don't use get_file_size so that we can do
3393 --add-section .note.GNU_stack=/dev/null
3394 get_file_size doesn't work on /dev/null. */
3395
3396 f = fopen (pa->filename, FOPEN_RB);
3397 if (f == NULL)
3398 fatal (_("cannot open: %s: %s"),
3399 pa->filename, strerror (errno));
3400
3401 off = 0;
3402 alloc = 4096;
3403 pa->contents = (bfd_byte *) xmalloc (alloc);
3404 while (!feof (f))
3405 {
3406 off_t got;
3407
3408 if (off == alloc)
3409 {
3410 alloc <<= 1;
3411 pa->contents = (bfd_byte *) xrealloc (pa->contents, alloc);
3412 }
3413
3414 got = fread (pa->contents + off, 1, alloc - off, f);
3415 if (ferror (f))
3416 fatal (_("%s: fread failed"), pa->filename);
3417
3418 off += got;
3419 }
3420
3421 pa->size = off;
3422
3423 fclose (f);
3424
3425 pa->next = add_sections;
3426 add_sections = pa;
3427 }
3428 break;
3429
3430 case OPTION_CHANGE_START:
3431 change_start = parse_vma (optarg, "--change-start");
3432 break;
3433
3434 case OPTION_CHANGE_SECTION_ADDRESS:
3435 case OPTION_CHANGE_SECTION_LMA:
3436 case OPTION_CHANGE_SECTION_VMA:
3437 {
3438 const char *s;
3439 int len;
3440 char *name;
3441 char *option = NULL;
3442 bfd_vma val;
3443 enum change_action what = CHANGE_IGNORE;
3444
3445 switch (c)
3446 {
3447 case OPTION_CHANGE_SECTION_ADDRESS:
3448 option = "--change-section-address";
3449 break;
3450 case OPTION_CHANGE_SECTION_LMA:
3451 option = "--change-section-lma";
3452 break;
3453 case OPTION_CHANGE_SECTION_VMA:
3454 option = "--change-section-vma";
3455 break;
3456 }
3457
3458 s = strchr (optarg, '=');
3459 if (s == NULL)
3460 {
3461 s = strchr (optarg, '+');
3462 if (s == NULL)
3463 {
3464 s = strchr (optarg, '-');
3465 if (s == NULL)
3466 fatal (_("bad format for %s"), option);
3467 }
3468 }
3469
3470 len = s - optarg;
3471 name = (char *) xmalloc (len + 1);
3472 strncpy (name, optarg, len);
3473 name[len] = '\0';
3474
3475 p = find_section_list (name, TRUE);
3476
3477 val = parse_vma (s + 1, option);
3478
3479 switch (*s)
3480 {
3481 case '=': what = CHANGE_SET; break;
3482 case '-': val = - val; /* Drop through. */
3483 case '+': what = CHANGE_MODIFY; break;
3484 }
3485
3486 switch (c)
3487 {
3488 case OPTION_CHANGE_SECTION_ADDRESS:
3489 p->change_vma = what;
3490 p->vma_val = val;
3491 /* Drop through. */
3492
3493 case OPTION_CHANGE_SECTION_LMA:
3494 p->change_lma = what;
3495 p->lma_val = val;
3496 break;
3497
3498 case OPTION_CHANGE_SECTION_VMA:
3499 p->change_vma = what;
3500 p->vma_val = val;
3501 break;
3502 }
3503 }
3504 break;
3505
3506 case OPTION_CHANGE_ADDRESSES:
3507 change_section_address = parse_vma (optarg, "--change-addresses");
3508 change_start = change_section_address;
3509 break;
3510
3511 case OPTION_CHANGE_WARNINGS:
3512 change_warn = TRUE;
3513 break;
3514
3515 case OPTION_CHANGE_LEADING_CHAR:
3516 change_leading_char = TRUE;
3517 break;
3518
3519 case OPTION_COMPRESS_DEBUG_SECTIONS:
3520 do_debug_sections = compress;
3521 break;
3522
3523 case OPTION_DEBUGGING:
3524 convert_debugging = TRUE;
3525 break;
3526
3527 case OPTION_DECOMPRESS_DEBUG_SECTIONS:
3528 do_debug_sections = decompress;
3529 break;
3530
3531 case OPTION_GAP_FILL:
3532 {
3533 bfd_vma gap_fill_vma;
3534
3535 gap_fill_vma = parse_vma (optarg, "--gap-fill");
3536 gap_fill = (bfd_byte) gap_fill_vma;
3537 if ((bfd_vma) gap_fill != gap_fill_vma)
3538 {
3539 char buff[20];
3540
3541 sprintf_vma (buff, gap_fill_vma);
3542
3543 non_fatal (_("Warning: truncating gap-fill from 0x%s to 0x%x"),
3544 buff, gap_fill);
3545 }
3546 gap_fill_set = TRUE;
3547 }
3548 break;
3549
3550 case OPTION_NO_CHANGE_WARNINGS:
3551 change_warn = FALSE;
3552 break;
3553
3554 case OPTION_PAD_TO:
3555 pad_to = parse_vma (optarg, "--pad-to");
3556 pad_to_set = TRUE;
3557 break;
3558
3559 case OPTION_REMOVE_LEADING_CHAR:
3560 remove_leading_char = TRUE;
3561 break;
3562
3563 case OPTION_REDEFINE_SYM:
3564 {
3565 /* Push this redefinition onto redefine_symbol_list. */
3566
3567 int len;
3568 const char *s;
3569 const char *nextarg;
3570 char *source, *target;
3571
3572 s = strchr (optarg, '=');
3573 if (s == NULL)
3574 fatal (_("bad format for %s"), "--redefine-sym");
3575
3576 len = s - optarg;
3577 source = (char *) xmalloc (len + 1);
3578 strncpy (source, optarg, len);
3579 source[len] = '\0';
3580
3581 nextarg = s + 1;
3582 len = strlen (nextarg);
3583 target = (char *) xmalloc (len + 1);
3584 strcpy (target, nextarg);
3585
3586 redefine_list_append ("--redefine-sym", source, target);
3587
3588 free (source);
3589 free (target);
3590 }
3591 break;
3592
3593 case OPTION_REDEFINE_SYMS:
3594 add_redefine_syms_file (optarg);
3595 break;
3596
3597 case OPTION_SET_SECTION_FLAGS:
3598 {
3599 const char *s;
3600 int len;
3601 char *name;
3602
3603 s = strchr (optarg, '=');
3604 if (s == NULL)
3605 fatal (_("bad format for %s"), "--set-section-flags");
3606
3607 len = s - optarg;
3608 name = (char *) xmalloc (len + 1);
3609 strncpy (name, optarg, len);
3610 name[len] = '\0';
3611
3612 p = find_section_list (name, TRUE);
3613
3614 p->set_flags = TRUE;
3615 p->flags = parse_flags (s + 1);
3616 }
3617 break;
3618
3619 case OPTION_RENAME_SECTION:
3620 {
3621 flagword flags;
3622 const char *eq, *fl;
3623 char *old_name;
3624 char *new_name;
3625 unsigned int len;
3626
3627 eq = strchr (optarg, '=');
3628 if (eq == NULL)
3629 fatal (_("bad format for %s"), "--rename-section");
3630
3631 len = eq - optarg;
3632 if (len == 0)
3633 fatal (_("bad format for %s"), "--rename-section");
3634
3635 old_name = (char *) xmalloc (len + 1);
3636 strncpy (old_name, optarg, len);
3637 old_name[len] = 0;
3638
3639 eq++;
3640 fl = strchr (eq, ',');
3641 if (fl)
3642 {
3643 flags = parse_flags (fl + 1);
3644 len = fl - eq;
3645 }
3646 else
3647 {
3648 flags = -1;
3649 len = strlen (eq);
3650 }
3651
3652 if (len == 0)
3653 fatal (_("bad format for %s"), "--rename-section");
3654
3655 new_name = (char *) xmalloc (len + 1);
3656 strncpy (new_name, eq, len);
3657 new_name[len] = 0;
3658
3659 add_section_rename (old_name, new_name, flags);
3660 }
3661 break;
3662
3663 case OPTION_SET_START:
3664 set_start = parse_vma (optarg, "--set-start");
3665 set_start_set = TRUE;
3666 break;
3667
3668 case OPTION_SREC_LEN:
3669 Chunk = parse_vma (optarg, "--srec-len");
3670 break;
3671
3672 case OPTION_SREC_FORCES3:
3673 S3Forced = TRUE;
3674 break;
3675
3676 case OPTION_STRIP_SYMBOLS:
3677 add_specific_symbols (optarg, strip_specific_htab);
3678 break;
3679
3680 case OPTION_STRIP_UNNEEDED_SYMBOLS:
3681 add_specific_symbols (optarg, strip_unneeded_htab);
3682 break;
3683
3684 case OPTION_KEEP_SYMBOLS:
3685 add_specific_symbols (optarg, keep_specific_htab);
3686 break;
3687
3688 case OPTION_LOCALIZE_HIDDEN:
3689 localize_hidden = TRUE;
3690 break;
3691
3692 case OPTION_LOCALIZE_SYMBOLS:
3693 add_specific_symbols (optarg, localize_specific_htab);
3694 break;
3695
3696 case OPTION_LONG_SECTION_NAMES:
3697 if (!strcmp ("enable", optarg))
3698 long_section_names = ENABLE;
3699 else if (!strcmp ("disable", optarg))
3700 long_section_names = DISABLE;
3701 else if (!strcmp ("keep", optarg))
3702 long_section_names = KEEP;
3703 else
3704 fatal (_("unknown long section names option '%s'"), optarg);
3705 break;
3706
3707 case OPTION_GLOBALIZE_SYMBOLS:
3708 add_specific_symbols (optarg, globalize_specific_htab);
3709 break;
3710
3711 case OPTION_KEEPGLOBAL_SYMBOLS:
3712 add_specific_symbols (optarg, keepglobal_specific_htab);
3713 break;
3714
3715 case OPTION_WEAKEN_SYMBOLS:
3716 add_specific_symbols (optarg, weaken_specific_htab);
3717 break;
3718
3719 case OPTION_ALT_MACH_CODE:
3720 use_alt_mach_code = strtoul (optarg, NULL, 0);
3721 if (use_alt_mach_code == 0)
3722 fatal (_("unable to parse alternative machine code"));
3723 break;
3724
3725 case OPTION_PREFIX_SYMBOLS:
3726 prefix_symbols_string = optarg;
3727 break;
3728
3729 case OPTION_PREFIX_SECTIONS:
3730 prefix_sections_string = optarg;
3731 break;
3732
3733 case OPTION_PREFIX_ALLOC_SECTIONS:
3734 prefix_alloc_sections_string = optarg;
3735 break;
3736
3737 case OPTION_READONLY_TEXT:
3738 bfd_flags_to_set |= WP_TEXT;
3739 bfd_flags_to_clear &= ~WP_TEXT;
3740 break;
3741
3742 case OPTION_WRITABLE_TEXT:
3743 bfd_flags_to_clear |= WP_TEXT;
3744 bfd_flags_to_set &= ~WP_TEXT;
3745 break;
3746
3747 case OPTION_PURE:
3748 bfd_flags_to_set |= D_PAGED;
3749 bfd_flags_to_clear &= ~D_PAGED;
3750 break;
3751
3752 case OPTION_IMPURE:
3753 bfd_flags_to_clear |= D_PAGED;
3754 bfd_flags_to_set &= ~D_PAGED;
3755 break;
3756
3757 case OPTION_EXTRACT_SYMBOL:
3758 extract_symbol = TRUE;
3759 break;
3760
3761 case OPTION_REVERSE_BYTES:
3762 {
3763 int prev = reverse_bytes;
3764
3765 reverse_bytes = atoi (optarg);
3766 if ((reverse_bytes <= 0) || ((reverse_bytes % 2) != 0))
3767 fatal (_("number of bytes to reverse must be positive and even"));
3768
3769 if (prev && prev != reverse_bytes)
3770 non_fatal (_("Warning: ignoring previous --reverse-bytes value of %d"),
3771 prev);
3772 break;
3773 }
3774
3775 case OPTION_FILE_ALIGNMENT:
3776 pe_file_alignment = parse_vma (optarg, "--file-alignment");
3777 break;
3778
3779 case OPTION_HEAP:
3780 {
3781 char *end;
3782 pe_heap_reserve = strtoul (optarg, &end, 0);
3783 if (end == optarg
3784 || (*end != '.' && *end != '\0'))
3785 non_fatal (_("%s: invalid reserve value for --heap"),
3786 optarg);
3787 else if (*end != '\0')
3788 {
3789 pe_heap_commit = strtoul (end + 1, &end, 0);
3790 if (*end != '\0')
3791 non_fatal (_("%s: invalid commit value for --heap"),
3792 optarg);
3793 }
3794 }
3795 break;
3796
3797 case OPTION_IMAGE_BASE:
3798 pe_image_base = parse_vma (optarg, "--image-base");
3799 break;
3800
3801 case OPTION_SECTION_ALIGNMENT:
3802 pe_section_alignment = parse_vma (optarg,
3803 "--section-alignment");
3804 break;
3805
3806 case OPTION_SUBSYSTEM:
3807 set_pe_subsystem (optarg);
3808 break;
3809
3810 case OPTION_STACK:
3811 {
3812 char *end;
3813 pe_stack_reserve = strtoul (optarg, &end, 0);
3814 if (end == optarg
3815 || (*end != '.' && *end != '\0'))
3816 non_fatal (_("%s: invalid reserve value for --stack"),
3817 optarg);
3818 else if (*end != '\0')
3819 {
3820 pe_stack_commit = strtoul (end + 1, &end, 0);
3821 if (*end != '\0')
3822 non_fatal (_("%s: invalid commit value for --stack"),
3823 optarg);
3824 }
3825 }
3826 break;
3827
3828 case 0:
3829 /* We've been given a long option. */
3830 break;
3831
3832 case 'H':
3833 case 'h':
3834 copy_usage (stdout, 0);
3835
3836 default:
3837 copy_usage (stderr, 1);
3838 }
3839 }
3840
3841 if (formats_info)
3842 {
3843 display_info ();
3844 return 0;
3845 }
3846
3847 if (show_version)
3848 print_version ("objcopy");
3849
3850 if (interleave && copy_byte == -1)
3851 fatal (_("interleave start byte must be set with --byte"));
3852
3853 if (copy_byte >= interleave)
3854 fatal (_("byte number must be less than interleave"));
3855
3856 if (copy_width > interleave - copy_byte)
3857 fatal (_("interleave width must be less than or equal to interleave - byte`"));
3858
3859 if (optind == argc || optind + 2 < argc)
3860 copy_usage (stderr, 1);
3861
3862 input_filename = argv[optind];
3863 if (optind + 1 < argc)
3864 output_filename = argv[optind + 1];
3865
3866 /* Default is to strip no symbols. */
3867 if (strip_symbols == STRIP_UNDEF && discard_locals == LOCALS_UNDEF)
3868 strip_symbols = STRIP_NONE;
3869
3870 if (output_target == NULL)
3871 output_target = input_target;
3872
3873 /* Convert input EFI target to PEI target. */
3874 if (input_target != NULL
3875 && strncmp (input_target, "efi-", 4) == 0)
3876 {
3877 char *efi;
3878
3879 efi = xstrdup (output_target + 4);
3880 if (strncmp (efi, "bsdrv-", 6) == 0
3881 || strncmp (efi, "rtdrv-", 6) == 0)
3882 efi += 2;
3883 else if (strncmp (efi, "app-", 4) != 0)
3884 fatal (_("unknown input EFI target: %s"), input_target);
3885
3886 input_target = efi;
3887 convert_efi_target (efi);
3888 }
3889
3890 /* Convert output EFI target to PEI target. */
3891 if (output_target != NULL
3892 && strncmp (output_target, "efi-", 4) == 0)
3893 {
3894 char *efi;
3895
3896 efi = xstrdup (output_target + 4);
3897 if (strncmp (efi, "app-", 4) == 0)
3898 {
3899 if (pe_subsystem == -1)
3900 pe_subsystem = IMAGE_SUBSYSTEM_EFI_APPLICATION;
3901 }
3902 else if (strncmp (efi, "bsdrv-", 6) == 0)
3903 {
3904 if (pe_subsystem == -1)
3905 pe_subsystem = IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER;
3906 efi += 2;
3907 }
3908 else if (strncmp (efi, "rtdrv-", 6) == 0)
3909 {
3910 if (pe_subsystem == -1)
3911 pe_subsystem = IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER;
3912 efi += 2;
3913 }
3914 else
3915 fatal (_("unknown output EFI target: %s"), output_target);
3916
3917 if (pe_file_alignment == (bfd_vma) -1)
3918 pe_file_alignment = PE_DEF_FILE_ALIGNMENT;
3919 if (pe_section_alignment == (bfd_vma) -1)
3920 pe_section_alignment = PE_DEF_SECTION_ALIGNMENT;
3921
3922 output_target = efi;
3923 convert_efi_target (efi);
3924 }
3925
3926 if (preserve_dates)
3927 if (stat (input_filename, & statbuf) < 0)
3928 fatal (_("warning: could not locate '%s'. System error message: %s"),
3929 input_filename, strerror (errno));
3930
3931 /* If there is no destination file, or the source and destination files
3932 are the same, then create a temp and rename the result into the input. */
3933 if (output_filename == NULL
3934 || filename_cmp (input_filename, output_filename) == 0)
3935 tmpname = make_tempname (input_filename);
3936 else
3937 tmpname = output_filename;
3938
3939 if (tmpname == NULL)
3940 fatal (_("warning: could not create temporary file whilst copying '%s', (error: %s)"),
3941 input_filename, strerror (errno));
3942
3943 copy_file (input_filename, tmpname, input_target, output_target, input_arch);
3944 if (status == 0)
3945 {
3946 if (preserve_dates)
3947 set_times (tmpname, &statbuf);
3948 if (tmpname != output_filename)
3949 status = (smart_rename (tmpname, input_filename,
3950 preserve_dates) != 0);
3951 }
3952 else
3953 unlink_if_ordinary (tmpname);
3954
3955 if (change_warn)
3956 {
3957 for (p = change_sections; p != NULL; p = p->next)
3958 {
3959 if (! p->used)
3960 {
3961 if (p->change_vma != CHANGE_IGNORE)
3962 {
3963 char buff [20];
3964
3965 sprintf_vma (buff, p->vma_val);
3966
3967 /* xgettext:c-format */
3968 non_fatal (_("%s %s%c0x%s never used"),
3969 "--change-section-vma",
3970 p->name,
3971 p->change_vma == CHANGE_SET ? '=' : '+',
3972 buff);
3973 }
3974
3975 if (p->change_lma != CHANGE_IGNORE)
3976 {
3977 char buff [20];
3978
3979 sprintf_vma (buff, p->lma_val);
3980
3981 /* xgettext:c-format */
3982 non_fatal (_("%s %s%c0x%s never used"),
3983 "--change-section-lma",
3984 p->name,
3985 p->change_lma == CHANGE_SET ? '=' : '+',
3986 buff);
3987 }
3988 }
3989 }
3990 }
3991
3992 return 0;
3993 }
3994
3995 int
3996 main (int argc, char *argv[])
3997 {
3998 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
3999 setlocale (LC_MESSAGES, "");
4000 #endif
4001 #if defined (HAVE_SETLOCALE)
4002 setlocale (LC_CTYPE, "");
4003 #endif
4004 bindtextdomain (PACKAGE, LOCALEDIR);
4005 textdomain (PACKAGE);
4006
4007 program_name = argv[0];
4008 xmalloc_set_program_name (program_name);
4009
4010 START_PROGRESS (program_name, 0);
4011
4012 expandargv (&argc, &argv);
4013
4014 strip_symbols = STRIP_UNDEF;
4015 discard_locals = LOCALS_UNDEF;
4016
4017 bfd_init ();
4018 set_default_bfd_target ();
4019
4020 if (is_strip < 0)
4021 {
4022 int i = strlen (program_name);
4023 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
4024 /* Drop the .exe suffix, if any. */
4025 if (i > 4 && FILENAME_CMP (program_name + i - 4, ".exe") == 0)
4026 {
4027 i -= 4;
4028 program_name[i] = '\0';
4029 }
4030 #endif
4031 is_strip = (i >= 5 && FILENAME_CMP (program_name + i - 5, "strip") == 0);
4032 }
4033
4034 create_symbol_htabs ();
4035
4036 if (is_strip)
4037 strip_main (argc, argv);
4038 else
4039 copy_main (argc, argv);
4040
4041 END_PROGRESS (program_name);
4042
4043 return status;
4044 }
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