[gdb/testsuite] Fix end_sequence addresses
[binutils-gdb.git] / binutils / objcopy.c
blobd91ba123c0126e756128fda2e9c2f8979bbea532
1 /* objcopy.c -- copy object file from input to output, optionally massaging it.
2 Copyright (C) 1991-2024 Free Software Foundation, Inc.
4 This file is part of GNU Binutils.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
19 02110-1301, USA. */
21 #include "sysdep.h"
22 #include "bfd.h"
23 #include "getopt.h"
24 #include "libiberty.h"
25 #include "bucomm.h"
26 #include "budbg.h"
27 #include "filenames.h"
28 #include "fnmatch.h"
29 #include "elf-bfd.h"
30 #include "coff/internal.h"
31 #include "libcoff.h"
32 #include "safe-ctype.h"
34 /* FIXME: See bfd/peXXigen.c for why we include an architecture specific
35 header in generic PE code. */
36 #include "coff/i386.h"
37 #include "coff/pe.h"
39 static bfd_vma pe_file_alignment = (bfd_vma) -1;
40 static bfd_vma pe_heap_commit = (bfd_vma) -1;
41 static bfd_vma pe_heap_reserve = (bfd_vma) -1;
42 static bfd_vma pe_image_base = (bfd_vma) -1;
43 static bfd_vma pe_section_alignment = (bfd_vma) -1;
44 static bfd_vma pe_stack_commit = (bfd_vma) -1;
45 static bfd_vma pe_stack_reserve = (bfd_vma) -1;
46 static short pe_subsystem = -1;
47 static short pe_major_subsystem_version = -1;
48 static short pe_minor_subsystem_version = -1;
50 struct is_specified_symbol_predicate_data
52 const char *name;
53 bool found;
56 /* A node includes symbol name mapping to support redefine_sym. */
57 struct redefine_node
59 char *source;
60 char *target;
63 struct addsym_node
65 struct addsym_node *next;
66 char * symdef;
67 long symval;
68 flagword flags;
69 char * section;
70 const char * othersym;
73 typedef struct section_rename
75 const char * old_name;
76 const char * new_name;
77 flagword flags;
78 struct section_rename * next;
80 section_rename;
82 /* List of sections to be renamed. */
83 static section_rename *section_rename_list;
85 static asymbol **isympp = NULL; /* Input symbols. */
86 static asymbol **osympp = NULL; /* Output symbols that survive stripping. */
88 /* If `copy_byte' >= 0, copy 'copy_width' byte(s) of every `interleave' bytes. */
89 static int copy_byte = -1;
90 static int interleave = 0; /* Initialised to 4 in copy_main(). */
91 static int copy_width = 1;
93 static bool keep_section_symbols = false ;/* True if section symbols should be retained. */
94 static bool verbose; /* Print file and target names. */
95 static bool preserve_dates; /* Preserve input file timestamp. */
96 static int deterministic = -1; /* Enable deterministic archives. */
97 static int status = 0; /* Exit status. */
99 static bool merge_notes = false; /* Merge note sections. */
100 static bool strip_section_headers = false;/* Strip section headers. */
102 typedef struct merged_note_section
104 asection * sec; /* The section that is being merged. */
105 bfd_byte * contents;/* New contents of the section. */
106 bfd_size_type size; /* New size of the section. */
107 struct merged_note_section * next; /* Link to next merged note section. */
108 } merged_note_section;
110 enum strip_action
112 STRIP_UNDEF,
113 STRIP_NONE, /* Don't strip. */
114 STRIP_DEBUG, /* Strip all debugger symbols. */
115 STRIP_UNNEEDED, /* Strip unnecessary symbols. */
116 STRIP_NONDEBUG, /* Strip everything but debug info. */
117 STRIP_DWO, /* Strip all DWO info. */
118 STRIP_NONDWO, /* Strip everything but DWO info. */
119 STRIP_ALL /* Strip all symbols. */
122 /* Which symbols to remove. */
123 static enum strip_action strip_symbols = STRIP_UNDEF;
125 enum locals_action
127 LOCALS_UNDEF,
128 LOCALS_START_L, /* Discard locals starting with L. */
129 LOCALS_ALL /* Discard all locals. */
132 /* Which local symbols to remove. Overrides STRIP_ALL. */
133 static enum locals_action discard_locals;
135 /* Structure used to hold lists of sections and actions to take. */
136 struct section_list
138 struct section_list *next; /* Next section to change. */
139 const char *pattern; /* Section name pattern. */
140 bool used; /* Whether this entry was used. */
142 unsigned int context; /* What to do with matching sections. */
143 /* Flag bits used in the context field.
144 COPY and REMOVE are mutually exlusive.
145 SET and ALTER are mutually exclusive. */
146 #define SECTION_CONTEXT_REMOVE (1 << 0) /* Remove this section. */
147 #define SECTION_CONTEXT_COPY (1 << 1) /* Copy this section, delete all non-copied section. */
148 #define SECTION_CONTEXT_KEEP (1 << 2) /* Keep this section. */
149 #define SECTION_CONTEXT_SET_VMA (1 << 3) /* Set the sections' VMA address. */
150 #define SECTION_CONTEXT_ALTER_VMA (1 << 4) /* Increment or decrement the section's VMA address. */
151 #define SECTION_CONTEXT_SET_LMA (1 << 5) /* Set the sections' LMA address. */
152 #define SECTION_CONTEXT_ALTER_LMA (1 << 6) /* Increment or decrement the section's LMA address. */
153 #define SECTION_CONTEXT_SET_FLAGS (1 << 7) /* Set the section's flags. */
154 #define SECTION_CONTEXT_REMOVE_RELOCS (1 << 8) /* Remove relocations for this section. */
155 #define SECTION_CONTEXT_SET_ALIGNMENT (1 << 9) /* Set alignment for section. */
157 bfd_vma vma_val; /* Amount to change by or set to. */
158 bfd_vma lma_val; /* Amount to change by or set to. */
159 flagword flags; /* What to set the section flags to. */
160 unsigned int alignment; /* Alignment of output section. */
163 static struct section_list *change_sections;
165 /* TRUE if some sections are to be removed. */
166 static bool sections_removed;
168 /* TRUE if only some sections are to be copied. */
169 static bool sections_copied;
171 /* Changes to the start address. */
172 static bfd_vma change_start = 0;
173 static bool set_start_set = false;
174 static bfd_vma set_start;
176 /* Changes to section addresses. */
177 static bfd_vma change_section_address = 0;
179 /* Filling gaps between sections. */
180 static bool gap_fill_set = false;
181 static bfd_byte gap_fill = 0;
183 /* Pad to a given address. */
184 static bool pad_to_set = false;
185 static bfd_vma pad_to;
187 /* Use alternative machine code? */
188 static unsigned long use_alt_mach_code = 0;
190 /* Output BFD flags user wants to set or clear */
191 static flagword bfd_flags_to_set;
192 static flagword bfd_flags_to_clear;
194 /* List of sections to add. */
195 struct section_add
197 /* Next section to add. */
198 struct section_add *next;
199 /* Name of section to add. */
200 const char *name;
201 /* Name of file holding section contents. */
202 const char *filename;
203 /* Size of file. */
204 size_t size;
205 /* Contents of file. */
206 bfd_byte *contents;
207 /* BFD section, after it has been added. */
208 asection *section;
211 /* List of sections to add to the output BFD. */
212 static struct section_add *add_sections;
214 /* List of sections to update in the output BFD. */
215 static struct section_add *update_sections;
217 /* List of sections to dump from the output BFD. */
218 static struct section_add *dump_sections;
220 /* If non-NULL the argument to --add-gnu-debuglink.
221 This should be the filename to store in the .gnu_debuglink section. */
222 static const char * gnu_debuglink_filename = NULL;
224 /* Whether to convert debugging information. */
225 static bool convert_debugging = false;
227 /* Whether to compress/decompress DWARF debug sections. */
228 static enum
230 nothing = 0,
231 compress = 1 << 0,
232 compress_zlib = compress | 1 << 1,
233 compress_gnu_zlib = compress | 1 << 2,
234 compress_gabi_zlib = compress | 1 << 3,
235 compress_zstd = compress | 1 << 4,
236 decompress = 1 << 5
237 } do_debug_sections = nothing;
239 /* Whether to generate ELF common symbols with the STT_COMMON type. */
240 static enum bfd_link_elf_stt_common do_elf_stt_common = unchanged;
242 /* Whether to change the leading character in symbol names. */
243 static bool change_leading_char = false;
245 /* Whether to remove the leading character from global symbol names. */
246 static bool remove_leading_char = false;
248 /* Whether to permit wildcard in symbol comparison. */
249 static bool wildcard = false;
251 /* True if --localize-hidden is in effect. */
252 static bool localize_hidden = false;
254 /* List of symbols to strip, keep, localize, keep-global, weaken,
255 or redefine. */
256 static htab_t strip_specific_htab = NULL;
257 static htab_t strip_unneeded_htab = NULL;
258 static htab_t keep_specific_htab = NULL;
259 static htab_t localize_specific_htab = NULL;
260 static htab_t globalize_specific_htab = NULL;
261 static htab_t keepglobal_specific_htab = NULL;
262 static htab_t weaken_specific_htab = NULL;
263 static htab_t redefine_specific_htab = NULL;
264 static htab_t redefine_specific_reverse_htab = NULL;
265 static struct addsym_node *add_sym_list = NULL, **add_sym_tail = &add_sym_list;
266 static int add_symbols = 0;
268 static char *strip_specific_buffer = NULL;
269 static char *strip_unneeded_buffer = NULL;
270 static char *keep_specific_buffer = NULL;
271 static char *localize_specific_buffer = NULL;
272 static char *globalize_specific_buffer = NULL;
273 static char *keepglobal_specific_buffer = NULL;
274 static char *weaken_specific_buffer = NULL;
276 /* If this is TRUE, we weaken global symbols (set BSF_WEAK). */
277 static bool weaken = false;
279 /* If this is TRUE, we retain BSF_FILE symbols. */
280 static bool keep_file_symbols = false;
282 /* Prefix symbols/sections. */
283 static char *prefix_symbols_string = 0;
284 static char *prefix_sections_string = 0;
285 static char *prefix_alloc_sections_string = 0;
287 /* True if --extract-symbol was passed on the command line. */
288 static bool extract_symbol = false;
290 /* If `reverse_bytes' is nonzero, then reverse the order of every chunk
291 of <reverse_bytes> bytes within each output section. */
292 static int reverse_bytes = 0;
294 /* For Coff objects, we may want to allow or disallow long section names,
295 or preserve them where found in the inputs. Debug info relies on them. */
296 enum long_section_name_handling
298 DISABLE,
299 ENABLE,
300 KEEP
303 /* The default long section handling mode is to preserve them.
304 This is also the only behaviour for 'strip'. */
305 static enum long_section_name_handling long_section_names = KEEP;
307 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
308 enum command_line_switch
310 OPTION_ADD_SECTION=150,
311 OPTION_ADD_GNU_DEBUGLINK,
312 OPTION_ADD_SYMBOL,
313 OPTION_ALT_MACH_CODE,
314 OPTION_CHANGE_ADDRESSES,
315 OPTION_CHANGE_LEADING_CHAR,
316 OPTION_CHANGE_SECTION_ADDRESS,
317 OPTION_CHANGE_SECTION_LMA,
318 OPTION_CHANGE_SECTION_VMA,
319 OPTION_CHANGE_START,
320 OPTION_CHANGE_WARNINGS,
321 OPTION_COMPRESS_DEBUG_SECTIONS,
322 OPTION_DEBUGGING,
323 OPTION_DECOMPRESS_DEBUG_SECTIONS,
324 OPTION_DUMP_SECTION,
325 OPTION_ELF_STT_COMMON,
326 OPTION_EXTRACT_DWO,
327 OPTION_EXTRACT_SYMBOL,
328 OPTION_FILE_ALIGNMENT,
329 OPTION_FORMATS_INFO,
330 OPTION_GAP_FILL,
331 OPTION_GLOBALIZE_SYMBOL,
332 OPTION_GLOBALIZE_SYMBOLS,
333 OPTION_HEAP,
334 OPTION_IMAGE_BASE,
335 OPTION_IMPURE,
336 OPTION_INTERLEAVE_WIDTH,
337 OPTION_KEEPGLOBAL_SYMBOLS,
338 OPTION_KEEP_FILE_SYMBOLS,
339 OPTION_KEEP_SECTION,
340 OPTION_KEEP_SYMBOLS,
341 OPTION_KEEP_SECTION_SYMBOLS,
342 OPTION_LOCALIZE_HIDDEN,
343 OPTION_LOCALIZE_SYMBOLS,
344 OPTION_LONG_SECTION_NAMES,
345 OPTION_MERGE_NOTES,
346 OPTION_NO_MERGE_NOTES,
347 OPTION_NO_CHANGE_WARNINGS,
348 OPTION_ONLY_KEEP_DEBUG,
349 OPTION_PAD_TO,
350 OPTION_PREFIX_ALLOC_SECTIONS,
351 OPTION_PREFIX_SECTIONS,
352 OPTION_PREFIX_SYMBOLS,
353 OPTION_PURE,
354 OPTION_READONLY_TEXT,
355 OPTION_REDEFINE_SYM,
356 OPTION_REDEFINE_SYMS,
357 OPTION_REMOVE_LEADING_CHAR,
358 OPTION_REMOVE_RELOCS,
359 OPTION_RENAME_SECTION,
360 OPTION_REVERSE_BYTES,
361 OPTION_PE_SECTION_ALIGNMENT,
362 OPTION_SET_SECTION_FLAGS,
363 OPTION_SET_SECTION_ALIGNMENT,
364 OPTION_SET_START,
365 OPTION_SREC_FORCES3,
366 OPTION_SREC_LEN,
367 OPTION_STACK,
368 OPTION_STRIP_DWO,
369 OPTION_STRIP_SECTION_HEADERS,
370 OPTION_STRIP_SYMBOLS,
371 OPTION_STRIP_UNNEEDED,
372 OPTION_STRIP_UNNEEDED_SYMBOL,
373 OPTION_STRIP_UNNEEDED_SYMBOLS,
374 OPTION_SUBSYSTEM,
375 OPTION_UPDATE_SECTION,
376 OPTION_VERILOG_DATA_WIDTH,
377 OPTION_WEAKEN,
378 OPTION_WEAKEN_SYMBOLS,
379 OPTION_WRITABLE_TEXT
382 /* Options to handle if running as "strip". */
384 static struct option strip_options[] =
386 {"disable-deterministic-archives", no_argument, 0, 'U'},
387 {"discard-all", no_argument, 0, 'x'},
388 {"discard-locals", no_argument, 0, 'X'},
389 {"enable-deterministic-archives", no_argument, 0, 'D'},
390 {"format", required_argument, 0, 'F'}, /* Obsolete */
391 {"help", no_argument, 0, 'h'},
392 {"info", no_argument, 0, OPTION_FORMATS_INFO},
393 {"input-format", required_argument, 0, 'I'}, /* Obsolete */
394 {"input-target", required_argument, 0, 'I'},
395 {"keep-section-symbols", no_argument, 0, OPTION_KEEP_SECTION_SYMBOLS},
396 {"keep-file-symbols", no_argument, 0, OPTION_KEEP_FILE_SYMBOLS},
397 {"keep-section", required_argument, 0, OPTION_KEEP_SECTION},
398 {"keep-symbol", required_argument, 0, 'K'},
399 {"merge-notes", no_argument, 0, 'M'},
400 {"no-merge-notes", no_argument, 0, OPTION_NO_MERGE_NOTES},
401 {"only-keep-debug", no_argument, 0, OPTION_ONLY_KEEP_DEBUG},
402 {"output-file", required_argument, 0, 'o'},
403 {"output-format", required_argument, 0, 'O'}, /* Obsolete */
404 {"output-target", required_argument, 0, 'O'},
405 {"preserve-dates", no_argument, 0, 'p'},
406 {"remove-section", required_argument, 0, 'R'},
407 {"remove-relocations", required_argument, 0, OPTION_REMOVE_RELOCS},
408 {"strip-section-headers", no_argument, 0, OPTION_STRIP_SECTION_HEADERS},
409 {"strip-all", no_argument, 0, 's'},
410 {"strip-debug", no_argument, 0, 'S'},
411 {"strip-dwo", no_argument, 0, OPTION_STRIP_DWO},
412 {"strip-symbol", required_argument, 0, 'N'},
413 {"strip-unneeded", no_argument, 0, OPTION_STRIP_UNNEEDED},
414 {"target", required_argument, 0, 'F'},
415 {"verbose", no_argument, 0, 'v'},
416 {"version", no_argument, 0, 'V'},
417 {"wildcard", no_argument, 0, 'w'},
418 {0, no_argument, 0, 0}
421 /* Options to handle if running as "objcopy". */
423 static struct option copy_options[] =
425 {"add-gnu-debuglink", required_argument, 0, OPTION_ADD_GNU_DEBUGLINK},
426 {"add-section", required_argument, 0, OPTION_ADD_SECTION},
427 {"add-symbol", required_argument, 0, OPTION_ADD_SYMBOL},
428 {"adjust-section-vma", required_argument, 0, OPTION_CHANGE_SECTION_ADDRESS},
429 {"adjust-start", required_argument, 0, OPTION_CHANGE_START},
430 {"adjust-vma", required_argument, 0, OPTION_CHANGE_ADDRESSES},
431 {"adjust-warnings", no_argument, 0, OPTION_CHANGE_WARNINGS},
432 {"alt-machine-code", required_argument, 0, OPTION_ALT_MACH_CODE},
433 {"binary-architecture", required_argument, 0, 'B'},
434 {"byte", required_argument, 0, 'b'},
435 {"change-addresses", required_argument, 0, OPTION_CHANGE_ADDRESSES},
436 {"change-leading-char", no_argument, 0, OPTION_CHANGE_LEADING_CHAR},
437 {"change-section-address", required_argument, 0, OPTION_CHANGE_SECTION_ADDRESS},
438 {"change-section-lma", required_argument, 0, OPTION_CHANGE_SECTION_LMA},
439 {"change-section-vma", required_argument, 0, OPTION_CHANGE_SECTION_VMA},
440 {"change-start", required_argument, 0, OPTION_CHANGE_START},
441 {"change-warnings", no_argument, 0, OPTION_CHANGE_WARNINGS},
442 {"compress-debug-sections", optional_argument, 0, OPTION_COMPRESS_DEBUG_SECTIONS},
443 {"debugging", no_argument, 0, OPTION_DEBUGGING},
444 {"decompress-debug-sections", no_argument, 0, OPTION_DECOMPRESS_DEBUG_SECTIONS},
445 {"disable-deterministic-archives", no_argument, 0, 'U'},
446 {"discard-all", no_argument, 0, 'x'},
447 {"discard-locals", no_argument, 0, 'X'},
448 {"dump-section", required_argument, 0, OPTION_DUMP_SECTION},
449 {"elf-stt-common", required_argument, 0, OPTION_ELF_STT_COMMON},
450 {"enable-deterministic-archives", no_argument, 0, 'D'},
451 {"extract-dwo", no_argument, 0, OPTION_EXTRACT_DWO},
452 {"extract-symbol", no_argument, 0, OPTION_EXTRACT_SYMBOL},
453 {"file-alignment", required_argument, 0, OPTION_FILE_ALIGNMENT},
454 {"format", required_argument, 0, 'F'}, /* Obsolete */
455 {"gap-fill", required_argument, 0, OPTION_GAP_FILL},
456 {"globalize-symbol", required_argument, 0, OPTION_GLOBALIZE_SYMBOL},
457 {"globalize-symbols", required_argument, 0, OPTION_GLOBALIZE_SYMBOLS},
458 {"heap", required_argument, 0, OPTION_HEAP},
459 {"help", no_argument, 0, 'h'},
460 {"image-base", required_argument, 0 , OPTION_IMAGE_BASE},
461 {"impure", no_argument, 0, OPTION_IMPURE},
462 {"info", no_argument, 0, OPTION_FORMATS_INFO},
463 {"input-format", required_argument, 0, 'I'}, /* Obsolete */
464 {"input-target", required_argument, 0, 'I'},
465 {"interleave", optional_argument, 0, 'i'},
466 {"interleave-width", required_argument, 0, OPTION_INTERLEAVE_WIDTH},
467 {"keep-file-symbols", no_argument, 0, OPTION_KEEP_FILE_SYMBOLS},
468 {"keep-global-symbol", required_argument, 0, 'G'},
469 {"keep-global-symbols", required_argument, 0, OPTION_KEEPGLOBAL_SYMBOLS},
470 {"keep-section", required_argument, 0, OPTION_KEEP_SECTION},
471 {"keep-symbol", required_argument, 0, 'K'},
472 {"keep-symbols", required_argument, 0, OPTION_KEEP_SYMBOLS},
473 {"keep-section-symbols", required_argument, 0, OPTION_KEEP_SECTION_SYMBOLS},
474 {"localize-hidden", no_argument, 0, OPTION_LOCALIZE_HIDDEN},
475 {"localize-symbol", required_argument, 0, 'L'},
476 {"localize-symbols", required_argument, 0, OPTION_LOCALIZE_SYMBOLS},
477 {"long-section-names", required_argument, 0, OPTION_LONG_SECTION_NAMES},
478 {"merge-notes", no_argument, 0, 'M'},
479 {"no-merge-notes", no_argument, 0, OPTION_NO_MERGE_NOTES},
480 {"no-adjust-warnings", no_argument, 0, OPTION_NO_CHANGE_WARNINGS},
481 {"no-change-warnings", no_argument, 0, OPTION_NO_CHANGE_WARNINGS},
482 {"only-keep-debug", no_argument, 0, OPTION_ONLY_KEEP_DEBUG},
483 {"only-section", required_argument, 0, 'j'},
484 {"output-format", required_argument, 0, 'O'}, /* Obsolete */
485 {"output-target", required_argument, 0, 'O'},
486 {"pad-to", required_argument, 0, OPTION_PAD_TO},
487 {"prefix-alloc-sections", required_argument, 0, OPTION_PREFIX_ALLOC_SECTIONS},
488 {"prefix-sections", required_argument, 0, OPTION_PREFIX_SECTIONS},
489 {"prefix-symbols", required_argument, 0, OPTION_PREFIX_SYMBOLS},
490 {"preserve-dates", no_argument, 0, 'p'},
491 {"pure", no_argument, 0, OPTION_PURE},
492 {"readonly-text", no_argument, 0, OPTION_READONLY_TEXT},
493 {"redefine-sym", required_argument, 0, OPTION_REDEFINE_SYM},
494 {"redefine-syms", required_argument, 0, OPTION_REDEFINE_SYMS},
495 {"remove-leading-char", no_argument, 0, OPTION_REMOVE_LEADING_CHAR},
496 {"remove-section", required_argument, 0, 'R'},
497 {"remove-relocations", required_argument, 0, OPTION_REMOVE_RELOCS},
498 {"strip-section-headers", no_argument, 0, OPTION_STRIP_SECTION_HEADERS},
499 {"rename-section", required_argument, 0, OPTION_RENAME_SECTION},
500 {"reverse-bytes", required_argument, 0, OPTION_REVERSE_BYTES},
501 {"section-alignment", required_argument, 0, OPTION_PE_SECTION_ALIGNMENT},
502 {"set-section-flags", required_argument, 0, OPTION_SET_SECTION_FLAGS},
503 {"set-section-alignment", required_argument, 0, OPTION_SET_SECTION_ALIGNMENT},
504 {"set-start", required_argument, 0, OPTION_SET_START},
505 {"srec-forceS3", no_argument, 0, OPTION_SREC_FORCES3},
506 {"srec-len", required_argument, 0, OPTION_SREC_LEN},
507 {"stack", required_argument, 0, OPTION_STACK},
508 {"strip-all", no_argument, 0, 'S'},
509 {"strip-debug", no_argument, 0, 'g'},
510 {"strip-dwo", no_argument, 0, OPTION_STRIP_DWO},
511 {"strip-symbol", required_argument, 0, 'N'},
512 {"strip-symbols", required_argument, 0, OPTION_STRIP_SYMBOLS},
513 {"strip-unneeded", no_argument, 0, OPTION_STRIP_UNNEEDED},
514 {"strip-unneeded-symbol", required_argument, 0, OPTION_STRIP_UNNEEDED_SYMBOL},
515 {"strip-unneeded-symbols", required_argument, 0, OPTION_STRIP_UNNEEDED_SYMBOLS},
516 {"subsystem", required_argument, 0, OPTION_SUBSYSTEM},
517 {"target", required_argument, 0, 'F'},
518 {"update-section", required_argument, 0, OPTION_UPDATE_SECTION},
519 {"verbose", no_argument, 0, 'v'},
520 {"verilog-data-width", required_argument, 0, OPTION_VERILOG_DATA_WIDTH},
521 {"version", no_argument, 0, 'V'},
522 {"weaken", no_argument, 0, OPTION_WEAKEN},
523 {"weaken-symbol", required_argument, 0, 'W'},
524 {"weaken-symbols", required_argument, 0, OPTION_WEAKEN_SYMBOLS},
525 {"wildcard", no_argument, 0, 'w'},
526 {"writable-text", no_argument, 0, OPTION_WRITABLE_TEXT},
527 {0, no_argument, 0, 0}
530 /* IMPORTS */
531 extern char *program_name;
533 /* This flag distinguishes between strip and objcopy:
534 1 means this is 'strip'; 0 means this is 'objcopy'.
535 -1 means if we should use argv[0] to decide. */
536 extern int is_strip;
538 /* The maximum length of an S record. This variable is defined in srec.c
539 and can be modified by the --srec-len parameter. */
540 extern unsigned int _bfd_srec_len;
542 /* Restrict the generation of Srecords to type S3 only.
543 This variable is defined in bfd/srec.c and can be toggled
544 on by the --srec-forceS3 command line switch. */
545 extern bool _bfd_srec_forceS3;
547 /* Width of data in bytes for verilog output.
548 This variable is declared in bfd/verilog.c and can be modified by
549 the --verilog-data-width parameter. */
550 extern unsigned int VerilogDataWidth;
552 /* Endianness of data for verilog output.
553 This variable is declared in bfd/verilog.c and is set in the
554 copy_object() function. */
555 extern enum bfd_endian VerilogDataEndianness;
557 /* Forward declarations. */
558 static void setup_section (bfd *, asection *, void *);
559 static void setup_bfd_headers (bfd *, bfd *);
560 static void copy_relocations_in_section (bfd *, asection *, void *);
561 static void copy_section (bfd *, asection *, void *);
562 static void get_sections (bfd *, asection *, void *);
563 static int compare_section_lma (const void *, const void *);
564 static void mark_symbols_used_in_relocations (bfd *, asection *, void *);
565 static bool write_debugging_info (bfd *, void *, long *, asymbol ***);
566 static const char *lookup_sym_redefinition (const char *);
567 static const char *find_section_rename (const char *, flagword *);
569 ATTRIBUTE_NORETURN static void
570 copy_usage (FILE *stream, int exit_status)
572 fprintf (stream, _("Usage: %s [option(s)] in-file [out-file]\n"), program_name);
573 fprintf (stream, _(" Copies a binary file, possibly transforming it in the process\n"));
574 fprintf (stream, _(" The options are:\n"));
575 fprintf (stream, _("\
576 -I --input-target <bfdname> Assume input file is in format <bfdname>\n\
577 -O --output-target <bfdname> Create an output file in format <bfdname>\n\
578 -B --binary-architecture <arch> Set output arch, when input is arch-less\n\
579 -F --target <bfdname> Set both input and output format to <bfdname>\n\
580 --debugging Convert debugging information, if possible\n\
581 -p --preserve-dates Copy modified/access timestamps to the output\n"));
582 if (DEFAULT_AR_DETERMINISTIC)
583 fprintf (stream, _("\
584 -D --enable-deterministic-archives\n\
585 Produce deterministic output when stripping archives (default)\n\
586 -U --disable-deterministic-archives\n\
587 Disable -D behavior\n"));
588 else
589 fprintf (stream, _("\
590 -D --enable-deterministic-archives\n\
591 Produce deterministic output when stripping archives\n\
592 -U --disable-deterministic-archives\n\
593 Disable -D behavior (default)\n"));
594 fprintf (stream, _("\
595 -j --only-section <name> Only copy section <name> into the output\n\
596 --add-gnu-debuglink=<file> Add section .gnu_debuglink linking to <file>\n\
597 -R --remove-section <name> Remove section <name> from the output\n\
598 --remove-relocations <name> Remove relocations from section <name>\n\
599 --strip-section-headers Strip section header from the output\n\
600 -S --strip-all Remove all symbol and relocation information\n\
601 -g --strip-debug Remove all debugging symbols & sections\n\
602 --strip-dwo Remove all DWO sections\n\
603 --strip-unneeded Remove all symbols not needed by relocations\n\
604 -N --strip-symbol <name> Do not copy symbol <name>\n\
605 --strip-unneeded-symbol <name>\n\
606 Do not copy symbol <name> unless needed by\n\
607 relocations\n\
608 --only-keep-debug Strip everything but the debug information\n\
609 --extract-dwo Copy only DWO sections\n\
610 --extract-symbol Remove section contents but keep symbols\n\
611 --keep-section <name> Do not strip section <name>\n\
612 -K --keep-symbol <name> Do not strip symbol <name>\n\
613 --keep-section-symbols Do not strip section symbols\n\
614 --keep-file-symbols Do not strip file symbol(s)\n\
615 --localize-hidden Turn all ELF hidden symbols into locals\n\
616 -L --localize-symbol <name> Force symbol <name> to be marked as a local\n\
617 --globalize-symbol <name> Force symbol <name> to be marked as a global\n\
618 -G --keep-global-symbol <name> Localize all symbols except <name>\n\
619 -W --weaken-symbol <name> Force symbol <name> to be marked as a weak\n\
620 --weaken Force all global symbols to be marked as weak\n\
621 -w --wildcard Permit wildcard in symbol comparison\n\
622 -x --discard-all Remove all non-global symbols\n\
623 -X --discard-locals Remove any compiler-generated symbols\n\
624 -i --interleave[=<number>] Only copy N out of every <number> bytes\n\
625 --interleave-width <number> Set N for --interleave\n\
626 -b --byte <num> Select byte <num> in every interleaved block\n\
627 --gap-fill <val> Fill gaps between sections with <val>\n\
628 --pad-to <addr> Pad the last section up to address <addr>\n\
629 --set-start <addr> Set the start address to <addr>\n\
630 {--change-start|--adjust-start} <incr>\n\
631 Add <incr> to the start address\n\
632 {--change-addresses|--adjust-vma} <incr>\n\
633 Add <incr> to LMA, VMA and start addresses\n\
634 {--change-section-address|--adjust-section-vma} <name>{=|+|-}<val>\n\
635 Change LMA and VMA of section <name> by <val>\n\
636 --change-section-lma <name>{=|+|-}<val>\n\
637 Change the LMA of section <name> by <val>\n\
638 --change-section-vma <name>{=|+|-}<val>\n\
639 Change the VMA of section <name> by <val>\n\
640 {--[no-]change-warnings|--[no-]adjust-warnings}\n\
641 Warn if a named section does not exist\n\
642 --set-section-flags <name>=<flags>\n\
643 Set section <name>'s properties to <flags>\n\
644 --set-section-alignment <name>=<align>\n\
645 Set section <name>'s alignment to <align> bytes\n\
646 --add-section <name>=<file> Add section <name> found in <file> to output\n\
647 --update-section <name>=<file>\n\
648 Update contents of section <name> with\n\
649 contents found in <file>\n\
650 --dump-section <name>=<file> Dump the contents of section <name> into <file>\n\
651 --rename-section <old>=<new>[,<flags>] Rename section <old> to <new>\n\
652 --long-section-names {enable|disable|keep}\n\
653 Handle long section names in Coff objects.\n\
654 --change-leading-char Force output format's leading character style\n\
655 --remove-leading-char Remove leading character from global symbols\n\
656 --reverse-bytes=<num> Reverse <num> bytes at a time, in output sections with content\n\
657 --redefine-sym <old>=<new> Redefine symbol name <old> to <new>\n\
658 --redefine-syms <file> --redefine-sym for all symbol pairs \n\
659 listed in <file>\n\
660 --srec-len <number> Restrict the length of generated Srecords\n\
661 --srec-forceS3 Restrict the type of generated Srecords to S3\n\
662 --strip-symbols <file> -N for all symbols listed in <file>\n\
663 --strip-unneeded-symbols <file>\n\
664 --strip-unneeded-symbol for all symbols listed\n\
665 in <file>\n\
666 --keep-symbols <file> -K for all symbols listed in <file>\n\
667 --localize-symbols <file> -L for all symbols listed in <file>\n\
668 --globalize-symbols <file> --globalize-symbol for all in <file>\n\
669 --keep-global-symbols <file> -G for all symbols listed in <file>\n\
670 --weaken-symbols <file> -W for all symbols listed in <file>\n\
671 --add-symbol <name>=[<section>:]<value>[,<flags>] Add a symbol\n\
672 --alt-machine-code <index> Use the target's <index>'th alternative machine\n\
673 --writable-text Mark the output text as writable\n\
674 --readonly-text Make the output text write protected\n\
675 --pure Mark the output file as demand paged\n\
676 --impure Mark the output file as impure\n\
677 --prefix-symbols <prefix> Add <prefix> to start of every symbol name\n\
678 --prefix-sections <prefix> Add <prefix> to start of every section name\n\
679 --prefix-alloc-sections <prefix>\n\
680 Add <prefix> to start of every allocatable\n\
681 section name\n\
682 --file-alignment <num> Set PE file alignment to <num>\n\
683 --heap <reserve>[,<commit>] Set PE reserve/commit heap to <reserve>/\n\
684 <commit>\n\
685 --image-base <address> Set PE image base to <address>\n\
686 --section-alignment <num> Set PE section alignment to <num>\n\
687 --stack <reserve>[,<commit>] Set PE reserve/commit stack to <reserve>/\n\
688 <commit>\n\
689 --subsystem <name>[:<version>]\n\
690 Set PE subsystem to <name> [& <version>]\n\
691 --compress-debug-sections[={none|zlib|zlib-gnu|zlib-gabi|zstd}]\n\
692 Compress DWARF debug sections\n\
693 --decompress-debug-sections Decompress DWARF debug sections using zlib\n\
694 --elf-stt-common=[yes|no] Generate ELF common symbols with STT_COMMON\n\
695 type\n\
696 --verilog-data-width <number> Specifies data width, in bytes, for verilog output\n\
697 -M --merge-notes Remove redundant entries in note sections\n\
698 --no-merge-notes Do not attempt to remove redundant notes (default)\n\
699 -v --verbose List all object files modified\n\
700 @<file> Read options from <file>\n\
701 -V --version Display this program's version number\n\
702 -h --help Display this output\n\
703 --info List object formats & architectures supported\n\
704 "));
705 list_supported_targets (program_name, stream);
706 if (REPORT_BUGS_TO[0] && exit_status == 0)
707 fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
708 exit (exit_status);
711 ATTRIBUTE_NORETURN static void
712 strip_usage (FILE *stream, int exit_status)
714 fprintf (stream, _("Usage: %s <option(s)> in-file(s)\n"), program_name);
715 fprintf (stream, _(" Removes symbols and sections from files\n"));
716 fprintf (stream, _(" The options are:\n"));
717 fprintf (stream, _("\
718 -I --input-target=<bfdname> Assume input file is in format <bfdname>\n\
719 -O --output-target=<bfdname> Create an output file in format <bfdname>\n\
720 -F --target=<bfdname> Set both input and output format to <bfdname>\n\
721 -p --preserve-dates Copy modified/access timestamps to the output\n\
722 "));
723 if (DEFAULT_AR_DETERMINISTIC)
724 fprintf (stream, _("\
725 -D --enable-deterministic-archives\n\
726 Produce deterministic output when stripping archives (default)\n\
727 -U --disable-deterministic-archives\n\
728 Disable -D behavior\n"));
729 else
730 fprintf (stream, _("\
731 -D --enable-deterministic-archives\n\
732 Produce deterministic output when stripping archives\n\
733 -U --disable-deterministic-archives\n\
734 Disable -D behavior (default)\n"));
735 fprintf (stream, _("\
736 -R --remove-section=<name> Also remove section <name> from the output\n\
737 --remove-relocations <name> Remove relocations from section <name>\n\
738 --strip-section-headers Strip section headers from the output\n\
739 -s --strip-all Remove all symbol and relocation information\n\
740 -g -S -d --strip-debug Remove all debugging symbols & sections\n\
741 --strip-dwo Remove all DWO sections\n\
742 --strip-unneeded Remove all symbols not needed by relocations\n\
743 --only-keep-debug Strip everything but the debug information\n\
744 -M --merge-notes Remove redundant entries in note sections (default)\n\
745 --no-merge-notes Do not attempt to remove redundant notes\n\
746 -N --strip-symbol=<name> Do not copy symbol <name>\n\
747 --keep-section=<name> Do not strip section <name>\n\
748 -K --keep-symbol=<name> Do not strip symbol <name>\n\
749 --keep-section-symbols Do not strip section symbols\n\
750 --keep-file-symbols Do not strip file symbol(s)\n\
751 -w --wildcard Permit wildcard in symbol comparison\n\
752 -x --discard-all Remove all non-global symbols\n\
753 -X --discard-locals Remove any compiler-generated symbols\n\
754 -v --verbose List all object files modified\n\
755 -V --version Display this program's version number\n\
756 -h --help Display this output\n\
757 --info List object formats & architectures supported\n\
758 -o <file> Place stripped output into <file>\n\
759 "));
761 list_supported_targets (program_name, stream);
762 if (REPORT_BUGS_TO[0] && exit_status == 0)
763 fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
764 exit (exit_status);
767 /* Parse section flags into a flagword, with a fatal error if the
768 string can't be parsed. */
770 static flagword
771 parse_flags (const char *s)
773 flagword ret;
774 const char *snext;
775 int len;
777 ret = SEC_NO_FLAGS;
781 snext = strchr (s, ',');
782 if (snext == NULL)
783 len = strlen (s);
784 else
786 len = snext - s;
787 ++snext;
790 if (0) ;
791 #define PARSE_FLAG(fname,fval) \
792 else if (strncasecmp (fname, s, len) == 0) ret |= fval
793 PARSE_FLAG ("alloc", SEC_ALLOC);
794 PARSE_FLAG ("load", SEC_LOAD);
795 PARSE_FLAG ("noload", SEC_NEVER_LOAD);
796 PARSE_FLAG ("readonly", SEC_READONLY);
797 PARSE_FLAG ("debug", SEC_DEBUGGING);
798 PARSE_FLAG ("code", SEC_CODE);
799 PARSE_FLAG ("data", SEC_DATA);
800 PARSE_FLAG ("rom", SEC_ROM);
801 PARSE_FLAG ("exclude", SEC_EXCLUDE);
802 PARSE_FLAG ("share", SEC_COFF_SHARED);
803 PARSE_FLAG ("contents", SEC_HAS_CONTENTS);
804 PARSE_FLAG ("merge", SEC_MERGE);
805 PARSE_FLAG ("strings", SEC_STRINGS);
806 PARSE_FLAG ("large", SEC_ELF_LARGE);
807 #undef PARSE_FLAG
808 else
810 char *copy;
812 copy = (char *) xmalloc (len + 1);
813 strncpy (copy, s, len);
814 copy[len] = '\0';
815 non_fatal (_("unrecognized section flag `%s'"), copy);
816 fatal (_ ("supported flags: %s"),
817 "alloc, load, noload, readonly, debug, code, data, rom, "
818 "exclude, contents, merge, strings, (COFF specific) share, "
819 "(ELF x86-64 specific) large");
822 s = snext;
824 while (s != NULL);
826 return ret;
829 /* Parse symbol flags into a flagword, with a fatal error if the
830 string can't be parsed. */
832 static flagword
833 parse_symflags (const char *s, const char **other)
835 flagword ret;
836 const char *snext;
837 size_t len;
839 ret = BSF_NO_FLAGS;
843 snext = strchr (s, ',');
844 if (snext == NULL)
845 len = strlen (s);
846 else
848 len = snext - s;
849 ++snext;
852 #define PARSE_FLAG(fname, fval) \
853 else if (len == sizeof fname - 1 \
854 && strncasecmp (fname, s, len) == 0) \
855 ret |= fval
857 #define PARSE_OTHER(fname, fval) \
858 else if (len >= sizeof fname \
859 && strncasecmp (fname, s, sizeof fname - 1) == 0) \
860 fval = xstrndup (s + sizeof fname - 1, len - sizeof fname + 1)
862 if (0) ;
863 PARSE_FLAG ("local", BSF_LOCAL);
864 PARSE_FLAG ("global", BSF_GLOBAL);
865 PARSE_FLAG ("export", BSF_EXPORT);
866 PARSE_FLAG ("debug", BSF_DEBUGGING);
867 PARSE_FLAG ("function", BSF_FUNCTION);
868 PARSE_FLAG ("weak", BSF_WEAK);
869 PARSE_FLAG ("section", BSF_SECTION_SYM);
870 PARSE_FLAG ("constructor", BSF_CONSTRUCTOR);
871 PARSE_FLAG ("warning", BSF_WARNING);
872 PARSE_FLAG ("indirect", BSF_INDIRECT);
873 PARSE_FLAG ("file", BSF_FILE);
874 PARSE_FLAG ("object", BSF_OBJECT);
875 PARSE_FLAG ("synthetic", BSF_SYNTHETIC);
876 PARSE_FLAG ("indirect-function", BSF_GNU_INDIRECT_FUNCTION | BSF_FUNCTION);
877 PARSE_FLAG ("unique-object", BSF_GNU_UNIQUE | BSF_OBJECT);
878 PARSE_OTHER ("before=", *other);
880 #undef PARSE_FLAG
881 #undef PARSE_OTHER
882 else
884 char *copy;
886 copy = (char *) xmalloc (len + 1);
887 strncpy (copy, s, len);
888 copy[len] = '\0';
889 non_fatal (_("unrecognized symbol flag `%s'"), copy);
890 fatal (_("supported flags: %s"),
891 "local, global, export, debug, function, weak, section, "
892 "constructor, warning, indirect, file, object, synthetic, "
893 "indirect-function, unique-object, before=<othersym>");
896 s = snext;
898 while (s != NULL);
900 return ret;
903 /* Find and optionally add an entry in the change_sections list.
905 We need to be careful in how we match section names because of the support
906 for wildcard characters. For example suppose that the user has invoked
907 objcopy like this:
909 --set-section-flags .debug_*=debug
910 --set-section-flags .debug_str=readonly,debug
911 --change-section-address .debug_*ranges=0x1000
913 With the idea that all debug sections will receive the DEBUG flag, the
914 .debug_str section will also receive the READONLY flag and the
915 .debug_ranges and .debug_aranges sections will have their address set to
916 0x1000. (This may not make much sense, but it is just an example).
918 When adding the section name patterns to the section list we need to make
919 sure that previous entries do not match with the new entry, unless the
920 match is exact. (In which case we assume that the user is overriding
921 the previous entry with the new context).
923 When matching real section names to the section list we make use of the
924 wildcard characters, but we must do so in context. Eg if we are setting
925 section addresses then we match for .debug_ranges but not for .debug_info.
927 Finally, if ADD is false and we do find a match, we mark the section list
928 entry as used. */
930 static struct section_list *
931 find_section_list (const char *name, bool add, unsigned int context)
933 struct section_list *p, *match = NULL;
935 /* assert ((context & ((1 << 7) - 1)) != 0); */
937 for (p = change_sections; p != NULL; p = p->next)
939 if (add)
941 if (strcmp (p->pattern, name) == 0)
943 /* Check for context conflicts. */
944 if (((p->context & SECTION_CONTEXT_REMOVE)
945 && (context & SECTION_CONTEXT_COPY))
946 || ((context & SECTION_CONTEXT_REMOVE)
947 && (p->context & SECTION_CONTEXT_COPY)))
948 fatal (_("error: %s both copied and removed"), name);
950 if (((p->context & SECTION_CONTEXT_SET_VMA)
951 && (context & SECTION_CONTEXT_ALTER_VMA))
952 || ((context & SECTION_CONTEXT_SET_VMA)
953 && (context & SECTION_CONTEXT_ALTER_VMA)))
954 fatal (_("error: %s both sets and alters VMA"), name);
956 if (((p->context & SECTION_CONTEXT_SET_LMA)
957 && (context & SECTION_CONTEXT_ALTER_LMA))
958 || ((context & SECTION_CONTEXT_SET_LMA)
959 && (context & SECTION_CONTEXT_ALTER_LMA)))
960 fatal (_("error: %s both sets and alters LMA"), name);
962 /* Extend the context. */
963 p->context |= context;
964 return p;
967 /* If we are not adding a new name/pattern then
968 only check for a match if the context applies. */
969 else if (p->context & context)
971 /* We could check for the presence of wildchar characters
972 first and choose between calling strcmp and fnmatch,
973 but is that really worth it ? */
974 if (p->pattern [0] == '!')
976 if (fnmatch (p->pattern + 1, name, 0) == 0)
978 p->used = true;
979 return NULL;
982 else
984 if (fnmatch (p->pattern, name, 0) == 0)
986 if (match == NULL)
987 match = p;
993 if (! add)
995 if (match != NULL)
996 match->used = true;
997 return match;
1000 p = (struct section_list *) xmalloc (sizeof (struct section_list));
1001 p->pattern = name;
1002 p->used = false;
1003 p->context = context;
1004 p->vma_val = 0;
1005 p->lma_val = 0;
1006 p->flags = 0;
1007 p->alignment = 0;
1008 p->next = change_sections;
1009 change_sections = p;
1011 return p;
1014 /* S1 is the entry node already in the table, S2 is the key node. */
1016 static int
1017 eq_string_redefnode (const void *s1, const void *s2)
1019 struct redefine_node *node1 = (struct redefine_node *) s1;
1020 struct redefine_node *node2 = (struct redefine_node *) s2;
1021 return !strcmp ((const char *) node1->source, (const char *) node2->source);
1024 /* P is redefine node. Hash value is generated from its "source" filed. */
1026 static hashval_t
1027 htab_hash_redefnode (const void *p)
1029 struct redefine_node *redefnode = (struct redefine_node *) p;
1030 return htab_hash_string (redefnode->source);
1033 /* Create hashtab used for redefine node. */
1035 static htab_t
1036 create_symbol2redef_htab (void)
1038 return htab_create_alloc (16, htab_hash_redefnode, eq_string_redefnode, NULL,
1039 xcalloc, free);
1042 static htab_t
1043 create_symbol_htab (void)
1045 return htab_create_alloc (16, htab_hash_string, htab_eq_string, NULL,
1046 xcalloc, free);
1049 static void
1050 create_symbol_htabs (void)
1052 strip_specific_htab = create_symbol_htab ();
1053 strip_unneeded_htab = create_symbol_htab ();
1054 keep_specific_htab = create_symbol_htab ();
1055 localize_specific_htab = create_symbol_htab ();
1056 globalize_specific_htab = create_symbol_htab ();
1057 keepglobal_specific_htab = create_symbol_htab ();
1058 weaken_specific_htab = create_symbol_htab ();
1059 redefine_specific_htab = create_symbol2redef_htab ();
1060 /* As there is no bidirectional hash table in libiberty, need a reverse table
1061 to check duplicated target string. */
1062 redefine_specific_reverse_htab = create_symbol_htab ();
1065 static void
1066 delete_symbol_htabs (void)
1068 htab_delete (strip_specific_htab);
1069 htab_delete (strip_unneeded_htab);
1070 htab_delete (keep_specific_htab);
1071 htab_delete (localize_specific_htab);
1072 htab_delete (globalize_specific_htab);
1073 htab_delete (keepglobal_specific_htab);
1074 htab_delete (weaken_specific_htab);
1075 htab_delete (redefine_specific_htab);
1076 htab_delete (redefine_specific_reverse_htab);
1078 free (isympp);
1079 if (osympp != isympp)
1080 free (osympp);
1083 /* Add a symbol to strip_specific_list. */
1085 static void
1086 add_specific_symbol (const char *name, htab_t htab)
1088 *htab_find_slot (htab, name, INSERT) = (char *) name;
1091 /* Like add_specific_symbol, but the element type is void *. */
1093 static void
1094 add_specific_symbol_node (const void *node, htab_t htab)
1096 *htab_find_slot (htab, node, INSERT) = (void *) node;
1099 /* Add symbols listed in `filename' to strip_specific_list. */
1101 #define IS_WHITESPACE(c) ((c) == ' ' || (c) == '\t')
1102 #define IS_LINE_TERMINATOR(c) ((c) == '\n' || (c) == '\r' || (c) == '\0')
1104 static void
1105 add_specific_symbols (const char *filename, htab_t htab, char **buffer_p)
1107 off_t size;
1108 FILE * f;
1109 char * line;
1110 char * buffer;
1111 unsigned int line_count;
1113 size = get_file_size (filename);
1114 if (size == 0)
1116 status = 1;
1117 return;
1120 buffer = (char *) xmalloc (size + 2);
1121 f = fopen (filename, FOPEN_RT);
1122 if (f == NULL)
1123 fatal (_("cannot open '%s': %s"), filename, strerror (errno));
1125 if (fread (buffer, 1, size, f) == 0 || ferror (f))
1126 fatal (_("%s: fread failed"), filename);
1128 fclose (f);
1129 buffer [size] = '\n';
1130 buffer [size + 1] = '\0';
1132 line_count = 1;
1134 for (line = buffer; * line != '\0'; line ++)
1136 char * eol;
1137 char * name;
1138 char * name_end;
1139 int finished = false;
1141 for (eol = line;; eol ++)
1143 switch (* eol)
1145 case '\n':
1146 * eol = '\0';
1147 /* Cope with \n\r. */
1148 if (eol[1] == '\r')
1149 ++ eol;
1150 finished = true;
1151 break;
1153 case '\r':
1154 * eol = '\0';
1155 /* Cope with \r\n. */
1156 if (eol[1] == '\n')
1157 ++ eol;
1158 finished = true;
1159 break;
1161 case 0:
1162 finished = true;
1163 break;
1165 case '#':
1166 /* Line comment, Terminate the line here, in case a
1167 name is present and then allow the rest of the
1168 loop to find the real end of the line. */
1169 * eol = '\0';
1170 break;
1172 default:
1173 break;
1176 if (finished)
1177 break;
1180 /* A name may now exist somewhere between 'line' and 'eol'.
1181 Strip off leading whitespace and trailing whitespace,
1182 then add it to the list. */
1183 for (name = line; IS_WHITESPACE (* name); name ++)
1185 for (name_end = name;
1186 (! IS_WHITESPACE (* name_end))
1187 && (! IS_LINE_TERMINATOR (* name_end));
1188 name_end ++)
1191 if (! IS_LINE_TERMINATOR (* name_end))
1193 char * extra;
1195 for (extra = name_end + 1; IS_WHITESPACE (* extra); extra ++)
1198 if (! IS_LINE_TERMINATOR (* extra))
1199 non_fatal (_("%s:%d: Ignoring rubbish found on this line"),
1200 filename, line_count);
1203 * name_end = '\0';
1205 if (name_end > name)
1206 add_specific_symbol (name, htab);
1208 /* Advance line pointer to end of line. The 'eol ++' in the for
1209 loop above will then advance us to the start of the next line. */
1210 line = eol;
1211 line_count ++;
1214 /* Do not free the buffer. Parts of it will have been referenced
1215 in the calls to add_specific_symbol. */
1216 *buffer_p = buffer;
1219 /* See whether a symbol should be stripped or kept
1220 based on strip_specific_list and keep_symbols. */
1222 static int
1223 is_specified_symbol_predicate (void **slot, void *data)
1225 struct is_specified_symbol_predicate_data *d =
1226 (struct is_specified_symbol_predicate_data *) data;
1227 const char *slot_name = (char *) *slot;
1229 if (*slot_name != '!')
1231 if (! fnmatch (slot_name, d->name, 0))
1233 d->found = true;
1234 /* Continue traversal, there might be a non-match rule. */
1235 return 1;
1238 else
1240 if (! fnmatch (slot_name + 1, d->name, 0))
1242 d->found = false;
1243 /* Stop traversal. */
1244 return 0;
1248 /* Continue traversal. */
1249 return 1;
1252 static bool
1253 is_specified_symbol (const char *name, htab_t htab)
1255 if (wildcard)
1257 struct is_specified_symbol_predicate_data data;
1259 data.name = name;
1260 data.found = false;
1262 htab_traverse (htab, is_specified_symbol_predicate, &data);
1264 return data.found;
1267 return htab_find (htab, name) != NULL;
1270 /* Return a pointer to the symbol used as a signature for GROUP. */
1272 static asymbol *
1273 group_signature (asection *group)
1275 bfd *abfd = group->owner;
1276 Elf_Internal_Shdr *ghdr;
1278 /* PR 20089: An earlier error may have prevented us from loading the symbol table. */
1279 if (isympp == NULL)
1280 return NULL;
1282 if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
1283 return NULL;
1285 ghdr = &elf_section_data (group)->this_hdr;
1286 if (ghdr->sh_link == elf_onesymtab (abfd))
1288 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1289 Elf_Internal_Shdr *symhdr = &elf_symtab_hdr (abfd);
1291 if (ghdr->sh_info > 0
1292 && ghdr->sh_info < symhdr->sh_size / bed->s->sizeof_sym)
1293 return isympp[ghdr->sh_info - 1];
1295 return NULL;
1298 /* Return TRUE if the section is a DWO section. */
1300 static bool
1301 is_dwo_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
1303 const char *name;
1304 int len;
1306 if (sec == NULL || (name = bfd_section_name (sec)) == NULL)
1307 return false;
1309 len = strlen (name);
1310 if (len < 5)
1311 return false;
1313 return startswith (name + len - 4, ".dwo");
1316 /* Return TRUE if section SEC is in the update list. */
1318 static bool
1319 is_update_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
1321 if (update_sections != NULL)
1323 struct section_add *pupdate;
1325 for (pupdate = update_sections;
1326 pupdate != NULL;
1327 pupdate = pupdate->next)
1329 if (strcmp (sec->name, pupdate->name) == 0)
1330 return true;
1334 return false;
1337 static bool
1338 is_mergeable_note_section (bfd * abfd, asection * sec)
1340 if (merge_notes
1341 && bfd_get_flavour (abfd) == bfd_target_elf_flavour
1342 && elf_section_data (sec)->this_hdr.sh_type == SHT_NOTE
1343 /* FIXME: We currently only support merging GNU_BUILD_NOTEs.
1344 We should add support for more note types. */
1345 && (startswith (sec->name, GNU_BUILD_ATTRS_SECTION_NAME)))
1346 return true;
1348 return false;
1351 /* See if a non-group section is being removed. */
1353 static bool
1354 is_strip_section_1 (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
1356 if (find_section_list (bfd_section_name (sec), false, SECTION_CONTEXT_KEEP)
1357 != NULL)
1358 return false;
1360 if (sections_removed || sections_copied)
1362 struct section_list *p;
1363 struct section_list *q;
1365 p = find_section_list (bfd_section_name (sec), false,
1366 SECTION_CONTEXT_REMOVE);
1367 q = find_section_list (bfd_section_name (sec), false,
1368 SECTION_CONTEXT_COPY);
1370 if (p && q)
1371 fatal (_("error: section %s matches both remove and copy options"),
1372 bfd_section_name (sec));
1373 if (p && is_update_section (abfd, sec))
1374 fatal (_("error: section %s matches both update and remove options"),
1375 bfd_section_name (sec));
1377 if (p != NULL)
1378 return true;
1379 if (sections_copied && q == NULL)
1380 return true;
1383 /* Remove non-alloc sections for --strip-section-headers. */
1384 if (strip_section_headers
1385 && (bfd_section_flags (sec) & SEC_ALLOC) == 0)
1386 return true;
1388 if ((bfd_section_flags (sec) & SEC_DEBUGGING) != 0)
1390 if (strip_symbols == STRIP_DEBUG
1391 || strip_symbols == STRIP_UNNEEDED
1392 || strip_symbols == STRIP_ALL
1393 || discard_locals == LOCALS_ALL
1394 || convert_debugging)
1396 /* By default we don't want to strip .reloc section.
1397 This section has for pe-coff special meaning. See
1398 pe-dll.c file in ld, and peXXigen.c in bfd for details.
1399 Similarly we do not want to strip debuglink sections. */
1400 const char * kept_sections[] =
1402 ".reloc",
1403 ".gnu_debuglink",
1404 ".gnu_debugaltlink"
1406 int i;
1408 for (i = ARRAY_SIZE (kept_sections);i--;)
1409 if (strcmp (bfd_section_name (sec), kept_sections[i]) == 0)
1410 break;
1411 if (i == -1)
1412 return true;
1415 if (strip_symbols == STRIP_DWO)
1416 return is_dwo_section (abfd, sec);
1418 if (strip_symbols == STRIP_NONDEBUG)
1419 return false;
1422 if (strip_symbols == STRIP_NONDWO)
1423 return !is_dwo_section (abfd, sec);
1425 return false;
1428 /* See if a section is being removed. */
1430 static bool
1431 is_strip_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
1433 if (is_strip_section_1 (abfd, sec))
1434 return true;
1436 if ((bfd_section_flags (sec) & SEC_GROUP) != 0)
1438 asymbol *gsym;
1439 const char *gname;
1440 asection *elt, *first;
1442 gsym = group_signature (sec);
1443 /* Strip groups without a valid signature. */
1444 if (gsym == NULL)
1445 return true;
1447 /* PR binutils/3181
1448 If we are going to strip the group signature symbol, then
1449 strip the group section too. */
1450 gname = gsym->name;
1451 if ((strip_symbols == STRIP_ALL
1452 && !is_specified_symbol (gname, keep_specific_htab))
1453 || is_specified_symbol (gname, strip_specific_htab))
1454 return true;
1456 /* Remove the group section if all members are removed. */
1457 first = elt = elf_next_in_group (sec);
1458 while (elt != NULL)
1460 if (!is_strip_section_1 (abfd, elt))
1461 return false;
1462 elt = elf_next_in_group (elt);
1463 if (elt == first)
1464 break;
1467 return true;
1470 return false;
1473 static bool
1474 is_nondebug_keep_contents_section (bfd *ibfd, asection *isection)
1476 /* Always keep ELF note sections. */
1477 if (bfd_get_flavour (ibfd) == bfd_target_elf_flavour)
1478 return elf_section_type (isection) == SHT_NOTE;
1480 /* Always keep the .buildid section for PE/COFF.
1482 Strictly, this should be written "always keep the section storing the debug
1483 directory", but that may be the .text section for objects produced by some
1484 tools, which it is not sensible to keep. */
1485 if (bfd_get_flavour (ibfd) == bfd_target_coff_flavour)
1486 return strcmp (bfd_section_name (isection), ".buildid") == 0;
1488 return false;
1491 /* Return true if SYM is a hidden symbol. */
1493 static bool
1494 is_hidden_symbol (asymbol *sym)
1496 elf_symbol_type *elf_sym;
1498 elf_sym = elf_symbol_from (sym);
1499 if (elf_sym != NULL)
1500 switch (ELF_ST_VISIBILITY (elf_sym->internal_elf_sym.st_other))
1502 case STV_HIDDEN:
1503 case STV_INTERNAL:
1504 return true;
1506 return false;
1509 /* Empty name is hopefully never a valid symbol name. */
1510 static const char * empty_name = "";
1512 static bool
1513 need_sym_before (struct addsym_node **node, const char *sym)
1515 int count;
1516 struct addsym_node *ptr = add_sym_list;
1518 /* 'othersym' symbols are at the front of the list. */
1519 for (count = 0; count < add_symbols; count++)
1521 if (!ptr->othersym)
1522 break;
1523 if (ptr->othersym == empty_name)
1524 continue;
1525 else if (strcmp (ptr->othersym, sym) == 0)
1527 free ((char *) ptr->othersym);
1528 ptr->othersym = empty_name;
1529 *node = ptr;
1530 return true;
1532 ptr = ptr->next;
1534 return false;
1537 static asymbol *
1538 create_new_symbol (struct addsym_node *ptr, bfd *obfd)
1540 asymbol *sym = bfd_make_empty_symbol (obfd);
1542 bfd_set_asymbol_name (sym, ptr->symdef);
1543 sym->value = ptr->symval;
1544 sym->flags = ptr->flags;
1545 if (ptr->section)
1547 asection *sec = bfd_get_section_by_name (obfd, ptr->section);
1548 if (!sec)
1549 fatal (_("Section %s not found"), ptr->section);
1550 sym->section = sec;
1552 else
1553 sym->section = bfd_abs_section_ptr;
1554 return sym;
1557 /* Choose which symbol entries to copy; put the result in OSYMS.
1558 We don't copy in place, because that confuses the relocs.
1559 Return the number of symbols to print. */
1561 static unsigned int
1562 filter_symbols (bfd *abfd, bfd *obfd, asymbol **osyms,
1563 asymbol **isyms, long symcount)
1565 asymbol **from = isyms, **to = osyms;
1566 long src_count = 0, dst_count = 0;
1567 int relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
1569 for (; src_count < symcount; src_count++)
1571 asymbol *sym = from[src_count];
1572 flagword flags = sym->flags;
1573 char *name = (char *) bfd_asymbol_name (sym);
1574 bool keep;
1575 bool used_in_reloc = false;
1576 bool undefined;
1577 bool rem_leading_char;
1578 bool add_leading_char;
1580 undefined = bfd_is_und_section (bfd_asymbol_section (sym));
1582 if (add_sym_list)
1584 struct addsym_node *ptr;
1586 if (need_sym_before (&ptr, name))
1587 to[dst_count++] = create_new_symbol (ptr, obfd);
1590 if (htab_elements (redefine_specific_htab) || section_rename_list)
1592 char *new_name;
1594 if (name != NULL
1595 && name[0] == '_'
1596 && name[1] == '_'
1597 && strcmp (name + (name[2] == '_'), "__gnu_lto_slim") == 0)
1599 fatal (_("redefining symbols does not work on LTO-compiled object files"));
1602 new_name = (char *) lookup_sym_redefinition (name);
1603 if (new_name == name
1604 && (flags & BSF_SECTION_SYM) != 0)
1605 new_name = (char *) find_section_rename (name, NULL);
1606 bfd_set_asymbol_name (sym, new_name);
1607 name = new_name;
1610 /* Check if we will remove the current leading character. */
1611 rem_leading_char =
1612 (name[0] != '\0'
1613 && name[0] == bfd_get_symbol_leading_char (abfd)
1614 && (change_leading_char
1615 || (remove_leading_char
1616 && ((flags & (BSF_GLOBAL | BSF_WEAK)) != 0
1617 || undefined
1618 || bfd_is_com_section (bfd_asymbol_section (sym))))));
1620 /* Check if we will add a new leading character. */
1621 add_leading_char =
1622 change_leading_char
1623 && (bfd_get_symbol_leading_char (obfd) != '\0')
1624 && (bfd_get_symbol_leading_char (abfd) == '\0'
1625 || (name[0] == bfd_get_symbol_leading_char (abfd)));
1627 /* Short circuit for change_leading_char if we can do it in-place. */
1628 if (rem_leading_char && add_leading_char && !prefix_symbols_string)
1630 name[0] = bfd_get_symbol_leading_char (obfd);
1631 bfd_set_asymbol_name (sym, name);
1632 rem_leading_char = false;
1633 add_leading_char = false;
1636 /* Remove leading char. */
1637 if (rem_leading_char)
1638 bfd_set_asymbol_name (sym, ++name);
1640 /* Add new leading char and/or prefix. */
1641 if (add_leading_char || prefix_symbols_string)
1643 char *n, *ptr;
1644 size_t len = strlen (name) + 1;
1646 if (add_leading_char)
1647 len++;
1648 if (prefix_symbols_string)
1649 len += strlen (prefix_symbols_string);
1651 ptr = n = (char *) xmalloc (len);
1652 if (add_leading_char)
1653 *ptr++ = bfd_get_symbol_leading_char (obfd);
1655 if (prefix_symbols_string)
1657 strcpy (ptr, prefix_symbols_string);
1658 ptr += strlen (prefix_symbols_string);
1661 strcpy (ptr, name);
1662 bfd_set_asymbol_name (sym, n);
1663 name = n;
1666 if (strip_symbols == STRIP_ALL)
1667 keep = false;
1668 else if ((flags & BSF_KEEP) != 0 /* Used in relocation. */
1669 || ((flags & BSF_SECTION_SYM) != 0
1670 && ((*bfd_asymbol_section (sym)->symbol_ptr_ptr)->flags
1671 & BSF_KEEP) != 0))
1673 keep = true;
1674 used_in_reloc = true;
1676 else if (relocatable /* Relocatable file. */
1677 && ((flags & (BSF_GLOBAL | BSF_WEAK)) != 0
1678 || bfd_is_com_section (bfd_asymbol_section (sym))))
1679 keep = true;
1680 else if (bfd_decode_symclass (sym) == 'I')
1681 /* Global symbols in $idata sections need to be retained
1682 even if relocatable is FALSE. External users of the
1683 library containing the $idata section may reference these
1684 symbols. */
1685 keep = true;
1686 else if ((flags & BSF_GLOBAL) != 0 /* Global symbol. */
1687 || (flags & BSF_WEAK) != 0
1688 || undefined
1689 || bfd_is_com_section (bfd_asymbol_section (sym)))
1690 keep = strip_symbols != STRIP_UNNEEDED;
1691 else if ((flags & BSF_DEBUGGING) != 0) /* Debugging symbol. */
1692 keep = (strip_symbols != STRIP_DEBUG
1693 && strip_symbols != STRIP_UNNEEDED
1694 && ! convert_debugging);
1695 else if (bfd_coff_get_comdat_section (abfd, bfd_asymbol_section (sym)))
1696 /* COMDAT sections store special information in local
1697 symbols, so we cannot risk stripping any of them. */
1698 keep = true;
1699 else /* Local symbol. */
1700 keep = (strip_symbols != STRIP_UNNEEDED
1701 && (discard_locals != LOCALS_ALL
1702 && (discard_locals != LOCALS_START_L
1703 || ! bfd_is_local_label (abfd, sym))));
1705 if (keep && is_specified_symbol (name, strip_specific_htab))
1707 /* There are multiple ways to set 'keep' above, but if it
1708 was the relocatable symbol case, then that's an error. */
1709 if (used_in_reloc)
1711 non_fatal (_("not stripping symbol `%s' because it is named in a relocation"), name);
1712 status = 1;
1714 else
1715 keep = false;
1718 if (keep
1719 && !(flags & BSF_KEEP)
1720 && is_specified_symbol (name, strip_unneeded_htab))
1721 keep = false;
1723 if (!keep
1724 && ((keep_file_symbols && (flags & BSF_FILE))
1725 || is_specified_symbol (name, keep_specific_htab)))
1726 keep = true;
1728 if (keep && is_strip_section (abfd, bfd_asymbol_section (sym)))
1729 keep = false;
1731 if (keep)
1733 if (((flags & (BSF_GLOBAL | BSF_GNU_UNIQUE))
1734 || undefined)
1735 && (weaken || is_specified_symbol (name, weaken_specific_htab)))
1737 sym->flags &= ~ (BSF_GLOBAL | BSF_GNU_UNIQUE);
1738 sym->flags |= BSF_WEAK;
1741 if (!undefined
1742 && (flags & (BSF_GLOBAL | BSF_WEAK))
1743 && (is_specified_symbol (name, localize_specific_htab)
1744 || (htab_elements (keepglobal_specific_htab) != 0
1745 && ! is_specified_symbol (name, keepglobal_specific_htab))
1746 || (localize_hidden && is_hidden_symbol (sym))))
1748 sym->flags &= ~ (BSF_GLOBAL | BSF_WEAK);
1749 sym->flags |= BSF_LOCAL;
1752 if (!undefined
1753 && (flags & BSF_LOCAL)
1754 && is_specified_symbol (name, globalize_specific_htab))
1756 sym->flags &= ~ BSF_LOCAL;
1757 sym->flags |= BSF_GLOBAL;
1760 to[dst_count++] = sym;
1763 if (add_sym_list)
1765 struct addsym_node *ptr = add_sym_list;
1767 for (src_count = 0; src_count < add_symbols; src_count++)
1769 if (ptr->othersym)
1771 if (ptr->othersym != empty_name)
1772 fatal (_("'before=%s' not found"), ptr->othersym);
1774 else
1775 to[dst_count++] = create_new_symbol (ptr, obfd);
1777 ptr = ptr->next;
1781 to[dst_count] = NULL;
1783 return dst_count;
1786 /* Find the redefined name of symbol SOURCE. */
1788 static const char *
1789 lookup_sym_redefinition (const char *source)
1791 struct redefine_node key_node = {(char *) source, NULL};
1792 struct redefine_node *redef_node
1793 = (struct redefine_node *) htab_find (redefine_specific_htab, &key_node);
1795 return redef_node == NULL ? source : redef_node->target;
1798 /* Insert a node into symbol redefine hash tabel. */
1800 static void
1801 add_redefine_and_check (const char *cause, const char *source,
1802 const char *target)
1804 struct redefine_node *new_node
1805 = (struct redefine_node *) xmalloc (sizeof (struct redefine_node));
1807 new_node->source = strdup (source);
1808 new_node->target = strdup (target);
1810 if (htab_find (redefine_specific_htab, new_node) != HTAB_EMPTY_ENTRY)
1811 fatal (_("%s: Multiple redefinition of symbol \"%s\""),
1812 cause, source);
1814 if (htab_find (redefine_specific_reverse_htab, target) != HTAB_EMPTY_ENTRY)
1815 fatal (_("%s: Symbol \"%s\" is target of more than one redefinition"),
1816 cause, target);
1818 /* Insert the NEW_NODE into hash table for quick search. */
1819 add_specific_symbol_node (new_node, redefine_specific_htab);
1821 /* Insert the target string into the reverse hash table, this is needed for
1822 duplicated target string check. */
1823 add_specific_symbol (new_node->target, redefine_specific_reverse_htab);
1827 /* Handle the --redefine-syms option. Read lines containing "old new"
1828 from the file, and add them to the symbol redefine list. */
1830 static void
1831 add_redefine_syms_file (const char *filename)
1833 FILE *file;
1834 char *buf;
1835 size_t bufsize;
1836 size_t len;
1837 size_t outsym_off;
1838 int c, lineno;
1840 file = fopen (filename, "r");
1841 if (file == NULL)
1842 fatal (_("couldn't open symbol redefinition file %s (error: %s)"),
1843 filename, strerror (errno));
1845 bufsize = 100;
1846 buf = (char *) xmalloc (bufsize + 1 /* For the terminating NUL. */);
1848 lineno = 1;
1849 c = getc (file);
1850 len = 0;
1851 outsym_off = 0;
1852 while (c != EOF)
1854 /* Collect the input symbol name. */
1855 while (! IS_WHITESPACE (c) && ! IS_LINE_TERMINATOR (c) && c != EOF)
1857 if (c == '#')
1858 goto comment;
1859 buf[len++] = c;
1860 if (len >= bufsize)
1862 bufsize *= 2;
1863 buf = (char *) xrealloc (buf, bufsize + 1);
1865 c = getc (file);
1867 buf[len++] = '\0';
1868 if (c == EOF)
1869 break;
1871 /* Eat white space between the symbol names. */
1872 while (IS_WHITESPACE (c))
1873 c = getc (file);
1874 if (c == '#' || IS_LINE_TERMINATOR (c))
1875 goto comment;
1876 if (c == EOF)
1877 break;
1879 /* Collect the output symbol name. */
1880 outsym_off = len;
1881 while (! IS_WHITESPACE (c) && ! IS_LINE_TERMINATOR (c) && c != EOF)
1883 if (c == '#')
1884 goto comment;
1885 buf[len++] = c;
1886 if (len >= bufsize)
1888 bufsize *= 2;
1889 buf = (char *) xrealloc (buf, bufsize + 1);
1891 c = getc (file);
1893 buf[len++] = '\0';
1894 if (c == EOF)
1895 break;
1897 /* Eat white space at end of line. */
1898 while (! IS_LINE_TERMINATOR(c) && c != EOF && IS_WHITESPACE (c))
1899 c = getc (file);
1900 if (c == '#')
1901 goto comment;
1902 /* Handle \r\n. */
1903 if ((c == '\r' && (c = getc (file)) == '\n')
1904 || c == '\n' || c == EOF)
1906 end_of_line:
1907 /* Append the redefinition to the list. */
1908 if (buf[0] != '\0')
1909 add_redefine_and_check (filename, &buf[0], &buf[outsym_off]);
1911 lineno++;
1912 len = 0;
1913 outsym_off = 0;
1914 if (c == EOF)
1915 break;
1916 c = getc (file);
1917 continue;
1919 else
1920 fatal (_("%s:%d: garbage found at end of line"), filename, lineno);
1921 comment:
1922 if (len != 0 && (outsym_off == 0 || outsym_off == len))
1923 fatal (_("%s:%d: missing new symbol name"), filename, lineno);
1924 buf[len++] = '\0';
1926 /* Eat the rest of the line and finish it. */
1927 while (c != '\n' && c != EOF)
1928 c = getc (file);
1929 goto end_of_line;
1932 if (len != 0)
1933 fatal (_("%s:%d: premature end of file"), filename, lineno);
1935 free (buf);
1936 fclose (file);
1939 /* Copy unknown object file IBFD onto OBFD.
1940 Returns TRUE upon success, FALSE otherwise. */
1942 static bool
1943 copy_unknown_object (bfd *ibfd, bfd *obfd)
1945 char *cbuf;
1946 bfd_size_type tocopy;
1947 off_t size;
1948 struct stat buf;
1950 if (bfd_stat_arch_elt (ibfd, &buf) != 0)
1952 bfd_nonfatal_message (NULL, ibfd, NULL, NULL);
1953 return false;
1956 size = buf.st_size;
1957 if (size < 0)
1959 non_fatal (_("stat returns negative size for `%s'"),
1960 bfd_get_archive_filename (ibfd));
1961 return false;
1964 if (bfd_seek (ibfd, 0, SEEK_SET) != 0)
1966 bfd_nonfatal (bfd_get_archive_filename (ibfd));
1967 return false;
1970 if (verbose)
1971 printf (_("copy from `%s' [unknown] to `%s' [unknown]\n"),
1972 bfd_get_archive_filename (ibfd), bfd_get_filename (obfd));
1974 cbuf = (char *) xmalloc (BUFSIZE);
1975 while (size != 0)
1977 if (size > BUFSIZE)
1978 tocopy = BUFSIZE;
1979 else
1980 tocopy = size;
1982 if (bfd_read (cbuf, tocopy, ibfd) != tocopy)
1984 bfd_nonfatal_message (NULL, ibfd, NULL, NULL);
1985 free (cbuf);
1986 return false;
1989 if (bfd_write (cbuf, tocopy, obfd) != tocopy)
1991 bfd_nonfatal_message (NULL, obfd, NULL, NULL);
1992 free (cbuf);
1993 return false;
1996 size -= tocopy;
1999 /* We should at least to be able to read it back when copying an
2000 unknown object in an archive. */
2001 chmod (bfd_get_filename (obfd), buf.st_mode | S_IRUSR);
2002 free (cbuf);
2003 return true;
2006 typedef struct objcopy_internal_note
2008 Elf_Internal_Note note;
2009 unsigned long padded_namesz;
2010 bfd_vma start;
2011 bfd_vma end;
2012 } objcopy_internal_note;
2014 #define DEBUG_MERGE 0
2016 #if DEBUG_MERGE
2017 #define merge_debug(format, ...) fprintf (stderr, format, ## __VA_ARGS__)
2018 #else
2019 #define merge_debug(format, ...)
2020 #endif
2022 /* Returns TRUE iff PNOTE1 overlaps or adjoins PNOTE2. */
2024 static bool
2025 overlaps_or_adjoins (objcopy_internal_note * pnote1,
2026 objcopy_internal_note * pnote2)
2028 if (pnote1->end < pnote2->start)
2029 /* FIXME: Alignment of 16 bytes taken from x86_64 binaries.
2030 Really we should extract the alignment of the section
2031 covered by the notes. */
2032 return BFD_ALIGN (pnote1->end, 16) < pnote2->start;
2034 if (pnote2->end < pnote2->start)
2035 return BFD_ALIGN (pnote2->end, 16) < pnote1->start;
2037 if (pnote1->end < pnote2->end)
2038 return true;
2040 if (pnote2->end < pnote1->end)
2041 return true;
2043 return false;
2046 /* Returns TRUE iff NEEDLE is fully contained by HAYSTACK. */
2048 static bool
2049 contained_by (objcopy_internal_note * needle,
2050 objcopy_internal_note * haystack)
2052 return needle->start >= haystack->start && needle->end <= haystack->end;
2055 static inline bool
2056 is_open_note (objcopy_internal_note * pnote)
2058 return pnote->note.type == NT_GNU_BUILD_ATTRIBUTE_OPEN;
2061 static inline bool
2062 is_func_note (objcopy_internal_note * pnote)
2064 return pnote->note.type == NT_GNU_BUILD_ATTRIBUTE_FUNC;
2067 static inline bool
2068 is_deleted_note (objcopy_internal_note * pnote)
2070 return pnote->note.type == 0;
2073 static bool
2074 is_version_note (objcopy_internal_note * pnote)
2076 return (pnote->note.namesz > 4
2077 && pnote->note.namedata[0] == 'G'
2078 && pnote->note.namedata[1] == 'A'
2079 && pnote->note.namedata[2] == '$'
2080 && pnote->note.namedata[3] == GNU_BUILD_ATTRIBUTE_VERSION);
2083 static bool
2084 is_64bit (bfd * abfd)
2086 /* Should never happen, but let's be paranoid. */
2087 if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
2088 return false;
2090 return elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64;
2093 /* This sorting function is used to get the notes into an order
2094 that makes merging easy. */
2096 static int
2097 compare_gnu_build_notes (const void * data1, const void * data2)
2099 objcopy_internal_note * pnote1 = (objcopy_internal_note *) data1;
2100 objcopy_internal_note * pnote2 = (objcopy_internal_note *) data2;
2102 /* Sort notes based upon the attribute they record. */
2103 int cmp = memcmp (pnote1->note.namedata + 3,
2104 pnote2->note.namedata + 3,
2105 pnote1->note.namesz < pnote2->note.namesz ?
2106 pnote1->note.namesz - 3 : pnote2->note.namesz - 3);
2107 if (cmp)
2108 return cmp;
2110 if (pnote1->end < pnote2->start)
2111 return -1;
2112 if (pnote1->start > pnote2->end)
2113 return 1;
2115 /* Overlaps - we should merge the two ranges. */
2116 if (pnote1->start < pnote2->start)
2117 return -1;
2118 if (pnote1->end > pnote2->end)
2119 return 1;
2120 if (pnote1->end < pnote2->end)
2121 return -1;
2123 /* Put OPEN notes before function notes. */
2124 if (is_open_note (pnote1) && ! is_open_note (pnote2))
2125 return -1;
2126 if (! is_open_note (pnote1) && is_open_note (pnote2))
2127 return 1;
2129 return 0;
2132 /* This sorting function is used to get the notes into an order
2133 that makes eliminating address ranges easier. */
2135 static int
2136 sort_gnu_build_notes (const void * data1, const void * data2)
2138 objcopy_internal_note * pnote1 = (objcopy_internal_note *) data1;
2139 objcopy_internal_note * pnote2 = (objcopy_internal_note *) data2;
2141 if (pnote1->note.type != pnote2->note.type)
2143 /* Move deleted notes to the end. */
2144 if (is_deleted_note (pnote1)) /* 1: OFD 2: OFD */
2145 return 1;
2147 /* Move OPEN notes to the start. */
2148 if (is_open_note (pnote1)) /* 1: OF 2: OFD */
2149 return -1;
2151 if (is_deleted_note (pnote2)) /* 1: F 2: O D */
2152 return -1;
2154 return 1; /* 1: F 2: O */
2157 /* Sort by starting address. */
2158 if (pnote1->start < pnote2->start)
2159 return -1;
2160 if (pnote1->start > pnote2->start)
2161 return 1;
2163 /* Then by end address (bigger range first). */
2164 if (pnote1->end > pnote2->end)
2165 return -1;
2166 if (pnote1->end < pnote2->end)
2167 return 1;
2169 /* Then by attribute type. */
2170 if (pnote1->note.namesz > 4
2171 && pnote2->note.namesz > 4
2172 && pnote1->note.namedata[3] != pnote2->note.namedata[3])
2173 return pnote1->note.namedata[3] - pnote2->note.namedata[3];
2175 return 0;
2178 /* Merge the notes on SEC, removing redundant entries.
2179 Returns the new, smaller size of the section upon success. */
2181 static bfd_size_type
2182 merge_gnu_build_notes (bfd * abfd,
2183 asection * sec,
2184 bfd_size_type size,
2185 bfd_byte * contents)
2187 objcopy_internal_note * pnotes_end;
2188 objcopy_internal_note * pnotes = NULL;
2189 objcopy_internal_note * pnote;
2190 bfd_size_type remain = size;
2191 unsigned version_1_seen = 0;
2192 unsigned version_2_seen = 0;
2193 unsigned version_3_seen = 0;
2194 const char * err = NULL;
2195 bfd_byte * in = contents;
2196 unsigned long previous_func_start = 0;
2197 unsigned long previous_open_start = 0;
2198 unsigned long previous_func_end = 0;
2199 unsigned long previous_open_end = 0;
2200 long relsize;
2202 relsize = bfd_get_reloc_upper_bound (abfd, sec);
2203 if (relsize > 0)
2205 arelent ** relpp;
2206 long relcount;
2208 /* If there are relocs associated with this section then we
2209 cannot safely merge it. */
2210 relpp = (arelent **) xmalloc (relsize);
2211 relcount = bfd_canonicalize_reloc (abfd, sec, relpp, isympp);
2212 free (relpp);
2213 if (relcount != 0)
2215 if (! is_strip)
2216 non_fatal (_("%s[%s]: Cannot merge - there are relocations against this section"),
2217 bfd_get_filename (abfd), bfd_section_name (sec));
2218 goto done;
2222 /* Make a copy of the notes and convert to our internal format.
2223 Minimum size of a note is 12 bytes. Also locate the version
2224 notes and check them. */
2225 pnote = pnotes = (objcopy_internal_note *)
2226 xcalloc ((size / 12), sizeof (* pnote));
2227 while (remain >= 12)
2229 bfd_vma start, end;
2231 pnote->note.namesz = bfd_get_32 (abfd, in);
2232 pnote->note.descsz = bfd_get_32 (abfd, in + 4);
2233 pnote->note.type = bfd_get_32 (abfd, in + 8);
2234 pnote->padded_namesz = (pnote->note.namesz + 3) & ~3;
2236 if (((pnote->note.descsz + 3) & ~3) != pnote->note.descsz)
2238 err = _("corrupt GNU build attribute note: description size not a factor of 4");
2239 goto done;
2242 if (pnote->note.type != NT_GNU_BUILD_ATTRIBUTE_OPEN
2243 && pnote->note.type != NT_GNU_BUILD_ATTRIBUTE_FUNC)
2245 err = _("corrupt GNU build attribute note: wrong note type");
2246 goto done;
2249 if (pnote->padded_namesz + pnote->note.descsz + 12 > remain)
2251 err = _("corrupt GNU build attribute note: note too big");
2252 goto done;
2255 if (pnote->note.namesz < 2)
2257 err = _("corrupt GNU build attribute note: name too small");
2258 goto done;
2261 pnote->note.namedata = (char *)(in + 12);
2262 pnote->note.descdata = (char *)(in + 12 + pnote->padded_namesz);
2264 remain -= 12 + pnote->padded_namesz + pnote->note.descsz;
2265 in += 12 + pnote->padded_namesz + pnote->note.descsz;
2267 if (pnote->note.namesz > 2
2268 && pnote->note.namedata[0] == '$'
2269 && pnote->note.namedata[1] == GNU_BUILD_ATTRIBUTE_VERSION
2270 && pnote->note.namedata[2] == '1')
2271 ++ version_1_seen;
2272 else if (is_version_note (pnote))
2274 if (pnote->note.namedata[4] == '2')
2275 ++ version_2_seen;
2276 else if (pnote->note.namedata[4] == '3')
2277 ++ version_3_seen;
2278 else
2280 err = _("corrupt GNU build attribute note: unsupported version");
2281 goto done;
2285 switch (pnote->note.descsz)
2287 case 0:
2288 start = end = 0;
2289 break;
2291 case 4:
2292 start = bfd_get_32 (abfd, pnote->note.descdata);
2293 /* FIXME: For version 1 and 2 notes we should try to
2294 calculate the end address by finding a symbol whose
2295 value is START, and then adding in its size.
2297 For now though, since v1 and v2 was not intended to
2298 handle gaps, we chose an artificially large end
2299 address. */
2300 end = (bfd_vma) -1;
2301 break;
2303 case 8:
2304 start = bfd_get_32 (abfd, pnote->note.descdata);
2305 end = bfd_get_32 (abfd, pnote->note.descdata + 4);
2306 break;
2308 case 16:
2309 start = bfd_get_64 (abfd, pnote->note.descdata);
2310 end = bfd_get_64 (abfd, pnote->note.descdata + 8);
2311 break;
2313 default:
2314 err = _("corrupt GNU build attribute note: bad description size");
2315 goto done;
2318 if (start > end)
2319 /* This can happen with PPC64LE binaries where empty notes are
2320 encoded as start = end + 4. */
2321 start = end;
2323 if (is_open_note (pnote))
2325 if (start)
2326 previous_open_start = start;
2328 pnote->start = previous_open_start;
2330 if (end)
2331 previous_open_end = end;
2333 pnote->end = previous_open_end;
2335 else
2337 if (start)
2338 previous_func_start = start;
2340 pnote->start = previous_func_start;
2342 if (end)
2343 previous_func_end = end;
2345 pnote->end = previous_func_end;
2348 if (pnote->note.namedata[pnote->note.namesz - 1] != 0)
2350 err = _("corrupt GNU build attribute note: name not NUL terminated");
2351 goto done;
2354 pnote ++;
2357 pnotes_end = pnote;
2359 /* Check that the notes are valid. */
2360 if (remain != 0)
2362 err = _("corrupt GNU build attribute notes: excess data at end");
2363 goto done;
2366 if (version_1_seen == 0 && version_2_seen == 0 && version_3_seen == 0)
2368 #if 0
2369 err = _("bad GNU build attribute notes: no known versions detected");
2370 goto done;
2371 #else
2372 /* This happens with glibc. No idea why. */
2373 non_fatal (_("%s[%s]: Warning: version note missing - assuming version 3"),
2374 bfd_get_filename (abfd), bfd_section_name (sec));
2375 version_3_seen = 2;
2376 #endif
2379 if ( (version_1_seen > 0 && version_2_seen > 0)
2380 || (version_1_seen > 0 && version_3_seen > 0)
2381 || (version_2_seen > 0 && version_3_seen > 0))
2383 err = _("bad GNU build attribute notes: multiple different versions");
2384 goto done;
2387 /* We are now only supporting the merging v3+ notes
2388 - it makes things much simpler. */
2389 if (version_3_seen == 0)
2391 merge_debug ("%s: skipping merge - not using v3 notes", bfd_section_name (sec));
2392 goto done;
2395 merge_debug ("Merging section %s which contains %ld notes\n",
2396 sec->name, pnotes_end - pnotes);
2398 /* Sort the notes. */
2399 qsort (pnotes, pnotes_end - pnotes, sizeof (* pnotes),
2400 compare_gnu_build_notes);
2402 #if DEBUG_MERGE
2403 merge_debug ("Results of initial sort:\n");
2404 for (pnote = pnotes; pnote < pnotes_end; pnote ++)
2405 merge_debug ("offset %#08lx range %#08lx..%#08lx type %ld attribute %d namesz %ld\n",
2406 (pnote->note.namedata - (char *) contents) - 12,
2407 pnote->start, pnote->end,
2408 pnote->note.type,
2409 pnote->note.namedata[3],
2410 pnote->note.namesz
2412 #endif
2414 /* Now merge the notes. The rules are:
2415 1. If a note has a zero range, it can be eliminated.
2416 2. If two notes have the same namedata then:
2417 2a. If one note's range is fully covered by the other note
2418 then it can be deleted.
2419 2b. If one note's range partially overlaps or adjoins the
2420 other note then if they are both of the same type (open
2421 or func) then they can be merged and one deleted. If
2422 they are of different types then they cannot be merged. */
2423 objcopy_internal_note * prev_note = NULL;
2425 for (pnote = pnotes; pnote < pnotes_end; pnote ++)
2427 /* Skip already deleted notes.
2428 FIXME: Can this happen ? We are scanning forwards and
2429 deleting backwards after all. */
2430 if (is_deleted_note (pnote))
2431 continue;
2433 /* Rule 1 - delete 0-range notes. */
2434 if (pnote->start == pnote->end)
2436 merge_debug ("Delete note at offset %#08lx - empty range\n",
2437 (pnote->note.namedata - (char *) contents) - 12);
2438 pnote->note.type = 0;
2439 continue;
2442 int iter;
2443 objcopy_internal_note * back;
2445 /* Rule 2: Check to see if there is an identical previous note. */
2446 for (iter = 0, back = prev_note ? prev_note : pnote - 1;
2447 back >= pnotes;
2448 back --)
2450 if (is_deleted_note (back))
2451 continue;
2453 /* Our sorting function should have placed all identically
2454 attributed notes together, so if we see a note of a different
2455 attribute type stop searching. */
2456 if (back->note.namesz != pnote->note.namesz
2457 || memcmp (back->note.namedata,
2458 pnote->note.namedata, pnote->note.namesz) != 0)
2459 break;
2461 if (back->start == pnote->start
2462 && back->end == pnote->end)
2464 merge_debug ("Delete note at offset %#08lx - duplicate of note at offset %#08lx\n",
2465 (pnote->note.namedata - (char *) contents) - 12,
2466 (back->note.namedata - (char *) contents) - 12);
2467 pnote->note.type = 0;
2468 break;
2471 /* Rule 2a. */
2472 if (contained_by (pnote, back))
2474 merge_debug ("Delete note at offset %#08lx - fully contained by note at %#08lx\n",
2475 (pnote->note.namedata - (char *) contents) - 12,
2476 (back->note.namedata - (char *) contents) - 12);
2477 pnote->note.type = 0;
2478 break;
2481 #if DEBUG_MERGE
2482 /* This should not happen as we have sorted the
2483 notes with earlier starting addresses first. */
2484 if (contained_by (back, pnote))
2485 merge_debug ("ERROR: UNEXPECTED CONTAINMENT\n");
2486 #endif
2488 /* Rule 2b. */
2489 if (overlaps_or_adjoins (back, pnote)
2490 && is_func_note (back) == is_func_note (pnote))
2492 merge_debug ("Delete note at offset %#08lx - merge into note at %#08lx\n",
2493 (pnote->note.namedata - (char *) contents) - 12,
2494 (back->note.namedata - (char *) contents) - 12);
2496 back->end = back->end > pnote->end ? back->end : pnote->end;
2497 back->start = back->start < pnote->start ? back->start : pnote->start;
2498 pnote->note.type = 0;
2499 break;
2502 /* Don't scan too far back however. */
2503 if (iter ++ > 16)
2505 /* FIXME: Not sure if this can ever be triggered. */
2506 merge_debug ("ITERATION LIMIT REACHED\n");
2507 break;
2511 if (! is_deleted_note (pnote))
2513 /* Keep a pointer to this note, so that we can
2514 start the next search for rule 2 matches here. */
2515 prev_note = pnote;
2516 #if DEBUG_MERGE
2517 merge_debug ("Unable to do anything with note at %#08lx\n",
2518 (pnote->note.namedata - (char *) contents) - 12);
2519 #endif
2523 /* Resort the notes. */
2524 merge_debug ("Final sorting of notes\n");
2525 qsort (pnotes, pnotes_end - pnotes, sizeof (* pnotes), sort_gnu_build_notes);
2527 /* Reconstruct the ELF notes. */
2528 bfd_byte * new_contents;
2529 bfd_byte * old;
2530 bfd_byte * new;
2531 bfd_size_type new_size;
2532 bfd_vma prev_start = 0;
2533 bfd_vma prev_end = 0;
2535 /* Not sure how, but the notes might grow in size.
2536 (eg see PR 1774507). Allow for this here. */
2537 new = new_contents = xmalloc (size * 2);
2538 for (pnote = pnotes, old = contents;
2539 pnote < pnotes_end;
2540 pnote ++)
2542 bfd_size_type note_size = 12 + pnote->padded_namesz + pnote->note.descsz;
2544 if (! is_deleted_note (pnote))
2546 /* Create the note, potentially using the
2547 address range of the previous note. */
2548 if (pnote->start == prev_start && pnote->end == prev_end)
2550 bfd_put_32 (abfd, pnote->note.namesz, new);
2551 bfd_put_32 (abfd, 0, new + 4);
2552 bfd_put_32 (abfd, pnote->note.type, new + 8);
2553 new += 12;
2554 memcpy (new, pnote->note.namedata, pnote->note.namesz);
2555 if (pnote->note.namesz < pnote->padded_namesz)
2556 memset (new + pnote->note.namesz, 0, pnote->padded_namesz - pnote->note.namesz);
2557 new += pnote->padded_namesz;
2559 else
2561 bfd_put_32 (abfd, pnote->note.namesz, new);
2562 bfd_put_32 (abfd, is_64bit (abfd) ? 16 : 8, new + 4);
2563 bfd_put_32 (abfd, pnote->note.type, new + 8);
2564 new += 12;
2565 memcpy (new, pnote->note.namedata, pnote->note.namesz);
2566 if (pnote->note.namesz < pnote->padded_namesz)
2567 memset (new + pnote->note.namesz, 0, pnote->padded_namesz - pnote->note.namesz);
2568 new += pnote->padded_namesz;
2569 if (is_64bit (abfd))
2571 bfd_put_64 (abfd, pnote->start, new);
2572 bfd_put_64 (abfd, pnote->end, new + 8);
2573 new += 16;
2575 else
2577 bfd_put_32 (abfd, pnote->start, new);
2578 bfd_put_32 (abfd, pnote->end, new + 4);
2579 new += 8;
2582 prev_start = pnote->start;
2583 prev_end = pnote->end;
2587 old += note_size;
2590 #if DEBUG_MERGE
2591 merge_debug ("Results of merge:\n");
2592 for (pnote = pnotes; pnote < pnotes_end; pnote ++)
2593 if (! is_deleted_note (pnote))
2594 merge_debug ("offset %#08lx range %#08lx..%#08lx type %ld attribute %d namesz %ld\n",
2595 (pnote->note.namedata - (char *) contents) - 12,
2596 pnote->start, pnote->end,
2597 pnote->note.type,
2598 pnote->note.namedata[3],
2599 pnote->note.namesz
2601 #endif
2603 new_size = new - new_contents;
2604 if (new_size < size)
2606 memcpy (contents, new_contents, new_size);
2607 size = new_size;
2609 free (new_contents);
2611 done:
2612 if (err)
2614 bfd_set_error (bfd_error_bad_value);
2615 bfd_nonfatal_message (NULL, abfd, sec, err);
2616 status = 1;
2619 free (pnotes);
2620 return size;
2623 static flagword
2624 check_new_section_flags (flagword flags, bfd *abfd, const char * secname)
2626 /* Only set the SEC_COFF_SHARED flag on COFF files.
2627 The same bit value is used by ELF targets to indicate
2628 compressed sections, and setting that flag here breaks
2629 things. */
2630 if ((flags & SEC_COFF_SHARED)
2631 && bfd_get_flavour (abfd) != bfd_target_coff_flavour)
2633 non_fatal (_("%s[%s]: Note - dropping 'share' flag as output format is not COFF"),
2634 bfd_get_filename (abfd), secname);
2635 flags &= ~ SEC_COFF_SHARED;
2638 /* Report a fatal error if 'large' is used with a non-x86-64 ELF target.
2639 Suppress the error for non-ELF targets to allow -O binary and formats that
2640 use the bit value SEC_ELF_LARGE for other purposes. */
2641 if ((flags & SEC_ELF_LARGE) != 0
2642 && bfd_get_flavour (abfd) == bfd_target_elf_flavour
2643 && get_elf_backend_data (abfd)->elf_machine_code != EM_X86_64)
2645 fatal (_ ("%s[%s]: 'large' flag is ELF x86-64 specific"),
2646 bfd_get_filename (abfd), secname);
2647 flags &= ~SEC_ELF_LARGE;
2650 return flags;
2653 static void
2654 set_long_section_mode (bfd *output_bfd, bfd *input_bfd, enum long_section_name_handling style)
2656 /* This is only relevant to Coff targets. */
2657 if (bfd_get_flavour (output_bfd) == bfd_target_coff_flavour)
2659 if (style == KEEP
2660 && bfd_get_flavour (input_bfd) == bfd_target_coff_flavour)
2661 style = bfd_coff_long_section_names (input_bfd) ? ENABLE : DISABLE;
2662 bfd_coff_set_long_section_names (output_bfd, style != DISABLE);
2666 /* Copy object file IBFD onto OBFD.
2667 Returns TRUE upon success, FALSE otherwise. */
2669 static bool
2670 copy_object (bfd *ibfd, bfd *obfd, const bfd_arch_info_type *input_arch)
2672 bfd_vma start;
2673 long symcount;
2674 asection **osections = NULL;
2675 asection *osec;
2676 asection *gnu_debuglink_section = NULL;
2677 bfd_size_type *gaps = NULL;
2678 bfd_size_type max_gap = 0;
2679 long symsize;
2680 void *dhandle;
2681 enum bfd_architecture iarch;
2682 unsigned int imach;
2683 unsigned int num_sec, i;
2685 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2686 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
2687 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2689 /* PR 17636: Call non-fatal so that we return to our parent who
2690 may need to tidy temporary files. */
2691 non_fatal (_("unable to change endianness of '%s'"),
2692 bfd_get_archive_filename (ibfd));
2693 return false;
2696 if (ibfd->read_only)
2698 non_fatal (_("unable to modify '%s' due to errors"),
2699 bfd_get_archive_filename (ibfd));
2700 return false;
2703 if (!bfd_set_format (obfd, bfd_get_format (ibfd)))
2705 bfd_nonfatal_message (NULL, obfd, NULL, NULL);
2706 return false;
2709 if (ibfd->sections == NULL)
2711 non_fatal (_("error: the input file '%s' has no sections"),
2712 bfd_get_archive_filename (ibfd));
2713 return false;
2716 /* This is a no-op on non-Coff targets. */
2717 set_long_section_mode (obfd, ibfd, long_section_names);
2719 /* Set the Verilog output endianness based upon the input file's
2720 endianness. We may not be producing verilog format output,
2721 but testing this just adds extra code this is not really
2722 necessary. */
2723 VerilogDataEndianness = ibfd->xvec->byteorder;
2725 if (bfd_get_flavour (ibfd) == bfd_target_elf_flavour)
2727 if (strip_section_headers)
2729 ibfd->flags |= BFD_NO_SECTION_HEADER;
2730 strip_symbols = STRIP_ALL;
2731 merge_notes = true;
2734 else
2736 if ((do_debug_sections & compress) != 0
2737 && do_debug_sections != compress)
2739 non_fatal (_ ("--compress-debug-sections=[zlib|zlib-gnu|zlib-gabi|"
2740 "zstd] is unsupported on `%s'"),
2741 bfd_get_archive_filename (ibfd));
2742 return false;
2745 if (do_elf_stt_common)
2747 non_fatal (_("--elf-stt-common=[yes|no] is unsupported on `%s'"),
2748 bfd_get_archive_filename (ibfd));
2749 return false;
2752 if (strip_section_headers)
2754 non_fatal (_("--strip-section-headers is unsupported on `%s'"),
2755 bfd_get_archive_filename (ibfd));
2756 return false;
2760 if (verbose)
2761 printf (_("copy from `%s' [%s] to `%s' [%s]\n"),
2762 bfd_get_archive_filename (ibfd), bfd_get_target (ibfd),
2763 bfd_get_filename (obfd), bfd_get_target (obfd));
2765 if (extract_symbol)
2766 start = 0;
2767 else
2769 if (set_start_set)
2770 start = set_start;
2771 else
2772 start = bfd_get_start_address (ibfd);
2773 start += change_start;
2776 /* Neither the start address nor the flags
2777 need to be set for a core file. */
2778 if (bfd_get_format (obfd) != bfd_core)
2780 flagword flags;
2782 flags = bfd_get_file_flags (ibfd);
2783 flags |= bfd_flags_to_set;
2784 flags &= ~bfd_flags_to_clear;
2785 flags &= bfd_applicable_file_flags (obfd);
2787 if (strip_symbols == STRIP_ALL)
2788 flags &= ~HAS_RELOC;
2790 if (!bfd_set_start_address (obfd, start)
2791 || !bfd_set_file_flags (obfd, flags))
2793 bfd_nonfatal_message (NULL, ibfd, NULL, NULL);
2794 return false;
2798 /* Copy architecture of input file to output file. */
2799 iarch = bfd_get_arch (ibfd);
2800 imach = bfd_get_mach (ibfd);
2801 if (input_arch)
2803 if (iarch == bfd_arch_unknown)
2805 iarch = input_arch->arch;
2806 imach = input_arch->mach;
2808 else
2809 non_fatal (_("Input file `%s' ignores binary architecture parameter."),
2810 bfd_get_archive_filename (ibfd));
2812 if (iarch == bfd_arch_unknown
2813 && bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2814 && bfd_get_flavour (obfd) == bfd_target_elf_flavour)
2816 const struct elf_backend_data *bed = get_elf_backend_data (obfd);
2817 iarch = bed->arch;
2818 imach = 0;
2820 if (!bfd_set_arch_mach (obfd, iarch, imach)
2821 && (ibfd->target_defaulted
2822 || bfd_get_arch (ibfd) != bfd_get_arch (obfd)))
2824 if (bfd_get_arch (ibfd) == bfd_arch_unknown)
2825 non_fatal (_("Unable to recognise the format of the input file `%s'"),
2826 bfd_get_archive_filename (ibfd));
2827 else
2828 non_fatal (_("Output file cannot represent architecture `%s'"),
2829 bfd_printable_arch_mach (bfd_get_arch (ibfd),
2830 bfd_get_mach (ibfd)));
2831 return false;
2834 if (!bfd_set_format (obfd, bfd_get_format (ibfd)))
2836 bfd_nonfatal_message (NULL, ibfd, NULL, NULL);
2837 return false;
2840 if (bfd_get_flavour (obfd) == bfd_target_coff_flavour
2841 && bfd_pei_p (obfd))
2843 /* Set up PE parameters. */
2844 pe_data_type *pe = pe_data (obfd);
2846 /* Copy PE parameters before changing them. */
2847 if (bfd_get_flavour (ibfd) == bfd_target_coff_flavour
2848 && bfd_pei_p (ibfd))
2850 pe->pe_opthdr = pe_data (ibfd)->pe_opthdr;
2852 if (preserve_dates)
2853 pe->timestamp = pe_data (ibfd)->coff.timestamp;
2854 else
2855 pe->timestamp = -1;
2858 if (pe_file_alignment != (bfd_vma) -1)
2859 pe->pe_opthdr.FileAlignment = pe_file_alignment;
2860 else
2861 pe_file_alignment = PE_DEF_FILE_ALIGNMENT;
2863 if (pe_heap_commit != (bfd_vma) -1)
2864 pe->pe_opthdr.SizeOfHeapCommit = pe_heap_commit;
2866 if (pe_heap_reserve != (bfd_vma) -1)
2867 pe->pe_opthdr.SizeOfHeapCommit = pe_heap_reserve;
2869 if (pe_image_base != (bfd_vma) -1)
2870 pe->pe_opthdr.ImageBase = pe_image_base;
2872 if (pe_section_alignment != (bfd_vma) -1)
2873 pe->pe_opthdr.SectionAlignment = pe_section_alignment;
2874 else
2875 pe_section_alignment = PE_DEF_SECTION_ALIGNMENT;
2877 if (pe_stack_commit != (bfd_vma) -1)
2878 pe->pe_opthdr.SizeOfStackCommit = pe_stack_commit;
2880 if (pe_stack_reserve != (bfd_vma) -1)
2881 pe->pe_opthdr.SizeOfStackReserve = pe_stack_reserve;
2883 if (pe_subsystem != -1)
2884 pe->pe_opthdr.Subsystem = pe_subsystem;
2886 if (pe_major_subsystem_version != -1)
2887 pe->pe_opthdr.MajorSubsystemVersion = pe_major_subsystem_version;
2889 if (pe_minor_subsystem_version != -1)
2890 pe->pe_opthdr.MinorSubsystemVersion = pe_minor_subsystem_version;
2892 if (pe_file_alignment > pe_section_alignment)
2894 non_fatal (_("warning: file alignment (0x%" PRIx64
2895 ") > section alignment (0x%" PRIx64 ")"),
2896 (uint64_t) pe_file_alignment,
2897 (uint64_t) pe_section_alignment);
2901 free (isympp);
2903 if (osympp != isympp)
2904 free (osympp);
2906 isympp = NULL;
2907 osympp = NULL;
2909 symsize = bfd_get_symtab_upper_bound (ibfd);
2910 if (symsize < 0)
2912 bfd_nonfatal_message (NULL, ibfd, NULL, NULL);
2913 return false;
2916 osympp = isympp = (asymbol **) xmalloc (symsize);
2917 symcount = bfd_canonicalize_symtab (ibfd, isympp);
2918 if (symcount < 0)
2920 bfd_nonfatal_message (NULL, ibfd, NULL, NULL);
2921 return false;
2923 /* PR 17512: file: d6323821
2924 If the symbol table could not be loaded do not pretend that we have
2925 any symbols. This trips us up later on when we load the relocs. */
2926 if (symcount == 0)
2928 free (isympp);
2929 osympp = isympp = NULL;
2932 /* BFD mandates that all output sections be created and sizes set before
2933 any output is done. Thus, we traverse all sections multiple times. */
2934 bfd_map_over_sections (ibfd, setup_section, obfd);
2936 if (!extract_symbol)
2937 setup_bfd_headers (ibfd, obfd);
2939 if (add_sections != NULL)
2941 struct section_add *padd;
2942 struct section_list *pset;
2944 for (padd = add_sections; padd != NULL; padd = padd->next)
2946 flagword flags;
2948 pset = find_section_list (padd->name, false,
2949 SECTION_CONTEXT_SET_FLAGS);
2950 if (pset != NULL)
2952 flags = pset->flags | SEC_HAS_CONTENTS;
2953 flags = check_new_section_flags (flags, obfd, padd->name);
2955 else
2956 flags = SEC_HAS_CONTENTS | SEC_READONLY | SEC_DATA;
2958 /* bfd_make_section_with_flags() does not return very helpful
2959 error codes, so check for the most likely user error first. */
2960 if (bfd_get_section_by_name (obfd, padd->name))
2962 bfd_nonfatal_message (NULL, obfd, NULL,
2963 _("can't add section '%s'"), padd->name);
2964 return false;
2966 else
2968 /* We use LINKER_CREATED here so that the backend hooks
2969 will create any special section type information,
2970 instead of presuming we know what we're doing merely
2971 because we set the flags. */
2972 padd->section = bfd_make_section_with_flags
2973 (obfd, padd->name, flags | SEC_LINKER_CREATED);
2974 if (padd->section == NULL)
2976 bfd_nonfatal_message (NULL, obfd, NULL,
2977 _("can't create section `%s'"),
2978 padd->name);
2979 return false;
2983 if (!bfd_set_section_size (padd->section, padd->size))
2985 bfd_nonfatal_message (NULL, obfd, padd->section, NULL);
2986 return false;
2989 pset = find_section_list (padd->name, false,
2990 SECTION_CONTEXT_SET_VMA | SECTION_CONTEXT_ALTER_VMA);
2991 if (pset != NULL
2992 && !bfd_set_section_vma (padd->section, pset->vma_val))
2994 bfd_nonfatal_message (NULL, obfd, padd->section, NULL);
2995 return false;
2998 pset = find_section_list (padd->name, false,
2999 SECTION_CONTEXT_SET_LMA | SECTION_CONTEXT_ALTER_LMA);
3000 if (pset != NULL)
3002 padd->section->lma = pset->lma_val;
3004 if (!bfd_set_section_alignment
3005 (padd->section, bfd_section_alignment (padd->section)))
3007 bfd_nonfatal_message (NULL, obfd, padd->section, NULL);
3008 return false;
3014 if (update_sections != NULL)
3016 struct section_add *pupdate;
3018 for (pupdate = update_sections;
3019 pupdate != NULL;
3020 pupdate = pupdate->next)
3022 pupdate->section = bfd_get_section_by_name (ibfd, pupdate->name);
3023 if (pupdate->section == NULL)
3025 non_fatal (_("error: %s not found, can't be updated"), pupdate->name);
3026 return false;
3029 osec = pupdate->section->output_section;
3030 if (!bfd_set_section_size (osec, pupdate->size))
3032 bfd_nonfatal_message (NULL, obfd, osec, NULL);
3033 return false;
3038 merged_note_section * merged_note_sections = NULL;
3039 if (merge_notes)
3041 /* This palaver is necessary because we must set the output
3042 section size first, before its contents are ready. */
3043 for (osec = ibfd->sections; osec != NULL; osec = osec->next)
3045 if (! is_mergeable_note_section (ibfd, osec))
3046 continue;
3048 /* If the section is going to be completly deleted then
3049 do not bother to merge it. */
3050 if (osec->output_section == NULL)
3051 continue;
3053 bfd_size_type size = bfd_section_size (osec);
3055 if (size == 0)
3056 /* This can happen, eg when stripping a binary for a second
3057 time. See BZ 2121365 for an example. */
3058 continue;
3060 merged_note_section * merged = xmalloc (sizeof * merged);
3061 merged->contents = NULL;
3062 if (! bfd_get_full_section_contents (ibfd, osec, & merged->contents))
3064 bfd_nonfatal_message (NULL, ibfd, osec,
3065 _("warning: could not load note section"));
3066 free (merged);
3067 continue;
3070 merged->size = merge_gnu_build_notes (ibfd, osec, size,
3071 merged->contents);
3073 /* FIXME: Once we have read the contents in, we must write
3074 them out again. So even if the mergeing has achieved
3075 nothing we still add this entry to the merge list. */
3077 if (size != merged->size
3078 && !bfd_set_section_size (osec->output_section, merged->size))
3080 bfd_nonfatal_message (NULL, obfd, osec,
3081 _("warning: failed to set merged notes size"));
3082 free (merged->contents);
3083 free (merged);
3084 continue;
3087 /* Add section to list of merged sections. */
3088 merged->sec = osec;
3089 merged->next = merged_note_sections;
3090 merged_note_sections = merged;
3094 if (dump_sections != NULL)
3096 struct section_add * pdump;
3098 for (pdump = dump_sections; pdump != NULL; pdump = pdump->next)
3100 FILE * f;
3101 bfd_byte *contents;
3103 osec = bfd_get_section_by_name (ibfd, pdump->name);
3104 if (osec == NULL)
3106 bfd_nonfatal_message (NULL, ibfd, NULL,
3107 _("can't dump section '%s' - it does not exist"),
3108 pdump->name);
3109 continue;
3112 if ((bfd_section_flags (osec) & SEC_HAS_CONTENTS) == 0)
3114 bfd_nonfatal_message (NULL, ibfd, osec,
3115 _("can't dump section - it has no contents"));
3116 continue;
3119 bfd_size_type size = bfd_section_size (osec);
3120 /* Note - we allow the dumping of zero-sized sections,
3121 creating an empty file. */
3123 f = fopen (pdump->filename, FOPEN_WB);
3124 if (f == NULL)
3126 bfd_nonfatal_message (pdump->filename, NULL, NULL,
3127 _("could not open section dump file"));
3128 continue;
3131 if (bfd_malloc_and_get_section (ibfd, osec, &contents))
3133 if (size != 0 && fwrite (contents, 1, size, f) != size)
3135 non_fatal (_("error writing section contents to %s (error: %s)"),
3136 pdump->filename,
3137 strerror (errno));
3138 free (contents);
3139 fclose (f);
3140 return false;
3143 else
3144 bfd_nonfatal_message (NULL, ibfd, osec,
3145 _("could not retrieve section contents"));
3147 fclose (f);
3148 free (contents);
3152 if (gnu_debuglink_filename != NULL)
3154 /* PR 15125: Give a helpful warning message if
3155 the debuglink section already exists, and
3156 allow the rest of the copy to complete. */
3157 if (bfd_get_section_by_name (obfd, ".gnu_debuglink"))
3159 non_fatal (_("%s: debuglink section already exists"),
3160 bfd_get_filename (ibfd));
3161 gnu_debuglink_filename = NULL;
3163 else
3165 gnu_debuglink_section = bfd_create_gnu_debuglink_section
3166 (obfd, gnu_debuglink_filename);
3168 if (gnu_debuglink_section == NULL)
3170 bfd_nonfatal_message (NULL, obfd, NULL,
3171 _("cannot create debug link section `%s'"),
3172 gnu_debuglink_filename);
3173 return false;
3176 /* Special processing for PE format files. We
3177 have no way to distinguish PE from COFF here. */
3178 if (bfd_get_flavour (obfd) == bfd_target_coff_flavour)
3180 bfd_vma debuglink_vma;
3181 asection * highest_section;
3183 /* The PE spec requires that all sections be adjacent and sorted
3184 in ascending order of VMA. It also specifies that debug
3185 sections should be last. This is despite the fact that debug
3186 sections are not loaded into memory and so in theory have no
3187 use for a VMA.
3189 This means that the debuglink section must be given a non-zero
3190 VMA which makes it contiguous with other debug sections. So
3191 walk the current section list, find the section with the
3192 highest VMA and start the debuglink section after that one. */
3193 for (osec = obfd->sections, highest_section = NULL;
3194 osec != NULL;
3195 osec = osec->next)
3196 if (osec->vma > 0
3197 && (highest_section == NULL
3198 || osec->vma > highest_section->vma))
3199 highest_section = osec;
3201 if (highest_section)
3202 debuglink_vma = BFD_ALIGN (highest_section->vma
3203 + highest_section->size,
3204 /* FIXME: We ought to be using
3205 COFF_PAGE_SIZE here or maybe
3206 bfd_section_alignment() (if it
3207 was set) but since this is for PE
3208 and we know the required alignment
3209 it is easier just to hard code it. */
3210 0x1000);
3211 else
3212 /* Umm, not sure what to do in this case. */
3213 debuglink_vma = 0x1000;
3215 bfd_set_section_vma (gnu_debuglink_section, debuglink_vma);
3220 num_sec = bfd_count_sections (obfd);
3221 if (num_sec != 0
3222 && (gap_fill_set || pad_to_set))
3224 asection **set;
3226 /* We must fill in gaps between the sections and/or we must pad
3227 the last section to a specified address. We do this by
3228 grabbing a list of the sections, sorting them by VMA, and
3229 increasing the section sizes as required to fill the gaps.
3230 We write out the gap contents below. */
3232 osections = xmalloc (num_sec * sizeof (*osections));
3233 set = osections;
3234 bfd_map_over_sections (obfd, get_sections, &set);
3236 qsort (osections, num_sec, sizeof (*osections), compare_section_lma);
3238 gaps = xmalloc (num_sec * sizeof (*gaps));
3239 memset (gaps, 0, num_sec * sizeof (*gaps));
3241 if (gap_fill_set)
3243 for (i = 0; i < num_sec - 1; i++)
3245 flagword flags;
3246 bfd_size_type size; /* Octets. */
3247 bfd_vma gap_start, gap_stop; /* Octets. */
3248 unsigned int opb1 = bfd_octets_per_byte (obfd, osections[i]);
3249 unsigned int opb2 = bfd_octets_per_byte (obfd, osections[i+1]);
3251 flags = bfd_section_flags (osections[i]);
3252 if ((flags & SEC_HAS_CONTENTS) == 0
3253 || (flags & SEC_LOAD) == 0)
3254 continue;
3256 size = bfd_section_size (osections[i]);
3257 gap_start = bfd_section_lma (osections[i]) * opb1 + size;
3258 gap_stop = bfd_section_lma (osections[i + 1]) * opb2;
3259 if (gap_start < gap_stop)
3261 if (!bfd_set_section_size (osections[i],
3262 size + (gap_stop - gap_start)))
3264 bfd_nonfatal_message (NULL, obfd, osections[i],
3265 _("Can't fill gap after section"));
3266 status = 1;
3267 break;
3269 gaps[i] = gap_stop - gap_start;
3270 if (max_gap < gap_stop - gap_start)
3271 max_gap = gap_stop - gap_start;
3276 if (pad_to_set)
3278 bfd_vma lma; /* Octets. */
3279 bfd_size_type size; /* Octets. */
3280 unsigned int opb = bfd_octets_per_byte (obfd, osections[num_sec - 1]);
3281 bfd_vma _pad_to = pad_to * opb;
3283 lma = bfd_section_lma (osections[num_sec - 1]) * opb;
3284 size = bfd_section_size (osections[num_sec - 1]);
3285 if (lma + size < _pad_to)
3287 if (!bfd_set_section_size (osections[num_sec - 1], _pad_to - lma))
3289 bfd_nonfatal_message (NULL, obfd, osections[num_sec - 1],
3290 _("can't add padding"));
3291 status = 1;
3293 else
3295 gaps[num_sec - 1] = _pad_to - (lma + size);
3296 if (max_gap < _pad_to - (lma + size))
3297 max_gap = _pad_to - (lma + size);
3303 /* Symbol filtering must happen after the output sections
3304 have been created, but before their contents are set. */
3305 dhandle = NULL;
3306 if (convert_debugging)
3307 dhandle = read_debugging_info (ibfd, isympp, symcount, false);
3309 if ((obfd->flags & (EXEC_P | DYNAMIC)) != 0
3310 && (obfd->flags & HAS_RELOC) == 0)
3312 if (bfd_keep_unused_section_symbols (obfd) || keep_section_symbols)
3314 /* Non-relocatable inputs may not have the unused section
3315 symbols. Mark all section symbols as used to generate
3316 section symbols. */
3317 asection *asect;
3318 for (asect = obfd->sections; asect != NULL; asect = asect->next)
3319 if (asect->symbol)
3320 asect->symbol->flags |= BSF_SECTION_SYM_USED;
3322 else
3324 /* Non-relocatable inputs may have the unused section symbols.
3325 Mark all section symbols as unused to excluded them. */
3326 long s;
3327 for (s = 0; s < symcount; s++)
3328 if ((isympp[s]->flags & BSF_SECTION_SYM_USED))
3329 isympp[s]->flags &= ~BSF_SECTION_SYM_USED;
3333 if (strip_symbols == STRIP_DEBUG
3334 || strip_symbols == STRIP_ALL
3335 || strip_symbols == STRIP_UNNEEDED
3336 || strip_symbols == STRIP_NONDEBUG
3337 || strip_symbols == STRIP_DWO
3338 || strip_symbols == STRIP_NONDWO
3339 || discard_locals != LOCALS_UNDEF
3340 || localize_hidden
3341 || htab_elements (strip_specific_htab) != 0
3342 || htab_elements (keep_specific_htab) != 0
3343 || htab_elements (localize_specific_htab) != 0
3344 || htab_elements (globalize_specific_htab) != 0
3345 || htab_elements (keepglobal_specific_htab) != 0
3346 || htab_elements (weaken_specific_htab) != 0
3347 || htab_elements (redefine_specific_htab) != 0
3348 || prefix_symbols_string
3349 || sections_removed
3350 || sections_copied
3351 || convert_debugging
3352 || change_leading_char
3353 || remove_leading_char
3354 || section_rename_list
3355 || weaken
3356 || add_symbols)
3358 /* Mark symbols used in output relocations so that they
3359 are kept, even if they are local labels or static symbols.
3361 Note we iterate over the input sections examining their
3362 relocations since the relocations for the output sections
3363 haven't been set yet. mark_symbols_used_in_relocations will
3364 ignore input sections which have no corresponding output
3365 section. */
3366 if (strip_symbols != STRIP_ALL)
3368 bfd_set_error (bfd_error_no_error);
3369 bfd_map_over_sections (ibfd,
3370 mark_symbols_used_in_relocations,
3371 isympp);
3372 if (bfd_get_error () != bfd_error_no_error)
3374 status = 1;
3375 return false;
3379 osympp = (asymbol **) xmalloc ((symcount + add_symbols + 1) * sizeof (asymbol *));
3380 symcount = filter_symbols (ibfd, obfd, osympp, isympp, symcount);
3383 if (dhandle != NULL)
3385 bool res;
3387 res = write_debugging_info (obfd, dhandle, &symcount, &osympp);
3389 if (! res)
3391 status = 1;
3392 return false;
3396 bfd_set_symtab (obfd, osympp, symcount);
3398 /* This has to happen before section positions are set. */
3399 bfd_map_over_sections (ibfd, copy_relocations_in_section, obfd);
3400 if (status != 0)
3401 return false;
3403 /* This has to happen after the symbol table has been set. */
3404 bfd_map_over_sections (ibfd, copy_section, obfd);
3405 if (status != 0)
3406 return false;
3408 if (add_sections != NULL)
3410 struct section_add *padd;
3412 for (padd = add_sections; padd != NULL; padd = padd->next)
3414 if (! bfd_set_section_contents (obfd, padd->section, padd->contents,
3415 0, padd->size))
3417 bfd_nonfatal_message (NULL, obfd, padd->section, NULL);
3418 return false;
3423 if (update_sections != NULL)
3425 struct section_add *pupdate;
3427 for (pupdate = update_sections;
3428 pupdate != NULL;
3429 pupdate = pupdate->next)
3431 osec = pupdate->section->output_section;
3432 if (! bfd_set_section_contents (obfd, osec, pupdate->contents,
3433 0, pupdate->size))
3435 bfd_nonfatal_message (NULL, obfd, osec, NULL);
3436 return false;
3441 if (merged_note_sections != NULL)
3443 merged_note_section * merged = NULL;
3445 for (osec = obfd->sections; osec != NULL; osec = osec->next)
3447 if (! is_mergeable_note_section (obfd, osec))
3448 continue;
3450 if (merged == NULL)
3451 merged = merged_note_sections;
3453 /* It is likely that output sections are in the same order
3454 as the input sections, but do not assume that this is
3455 the case. */
3456 if (merged->sec->output_section != osec)
3458 for (merged = merged_note_sections;
3459 merged != NULL;
3460 merged = merged->next)
3461 if (merged->sec->output_section == osec)
3462 break;
3464 if (merged == NULL)
3466 bfd_nonfatal_message
3467 (NULL, obfd, osec,
3468 _("error: failed to locate merged notes"));
3469 continue;
3473 if (merged->contents == NULL)
3475 bfd_nonfatal_message
3476 (NULL, obfd, osec,
3477 _("error: failed to merge notes"));
3478 continue;
3481 if (! bfd_set_section_contents (obfd, osec, merged->contents, 0,
3482 merged->size))
3484 bfd_nonfatal_message
3485 (NULL, obfd, osec,
3486 _("error: failed to copy merged notes into output"));
3487 return false;
3490 merged = merged->next;
3493 /* Free the memory. */
3494 merged_note_section * next;
3495 for (merged = merged_note_sections; merged != NULL; merged = next)
3497 next = merged->next;
3498 free (merged->contents);
3499 free (merged);
3502 else if (merge_notes && ! is_strip && ! strip_section_headers)
3503 non_fatal (_("%s: Could not find any mergeable note sections"),
3504 bfd_get_filename (ibfd));
3506 if (gnu_debuglink_filename != NULL)
3508 if (! bfd_fill_in_gnu_debuglink_section
3509 (obfd, gnu_debuglink_section, gnu_debuglink_filename))
3511 bfd_nonfatal_message (NULL, obfd, NULL,
3512 _("cannot fill debug link section `%s'"),
3513 gnu_debuglink_filename);
3514 return false;
3518 if (gaps != NULL)
3520 bfd_byte *buf;
3522 /* Fill in the gaps. */
3523 if (max_gap > 8192)
3524 max_gap = 8192;
3525 buf = (bfd_byte *) xmalloc (max_gap);
3526 memset (buf, gap_fill, max_gap);
3528 for (i = 0; i < num_sec; i++)
3530 if (gaps[i] != 0)
3532 bfd_size_type left;
3533 file_ptr off;
3535 left = gaps[i];
3536 off = bfd_section_size (osections[i]) - left;
3538 while (left > 0)
3540 bfd_size_type now;
3542 if (left > 8192)
3543 now = 8192;
3544 else
3545 now = left;
3547 if (! bfd_set_section_contents (obfd, osections[i], buf,
3548 off, now))
3550 bfd_nonfatal_message (NULL, obfd, osections[i], NULL);
3551 free (buf);
3552 return false;
3555 left -= now;
3556 off += now;
3561 free (buf);
3562 free (gaps);
3563 gaps = NULL;
3566 /* Allow the BFD backend to copy any private data it understands
3567 from the input BFD to the output BFD. This is done last to
3568 permit the routine to look at the filtered symbol table, which is
3569 important for the ECOFF code at least. */
3570 if (! bfd_copy_private_bfd_data (ibfd, obfd))
3572 bfd_nonfatal_message (NULL, obfd, NULL,
3573 _("error copying private BFD data"));
3574 return false;
3577 /* Switch to the alternate machine code. We have to do this at the
3578 very end, because we only initialize the header when we create
3579 the first section. */
3580 if (use_alt_mach_code != 0)
3582 if (! bfd_alt_mach_code (obfd, use_alt_mach_code))
3584 non_fatal (_("this target does not support %lu alternative machine codes"),
3585 use_alt_mach_code);
3586 if (bfd_get_flavour (obfd) == bfd_target_elf_flavour)
3588 non_fatal (_("treating that number as an absolute e_machine value instead"));
3589 elf_elfheader (obfd)->e_machine = use_alt_mach_code;
3591 else
3592 non_fatal (_("ignoring the alternative value"));
3596 return true;
3599 /* Read each archive element in turn from IBFD, copy the
3600 contents to temp file, and keep the temp file handle.
3601 If 'force_output_target' is TRUE then make sure that
3602 all elements in the new archive are of the type
3603 'output_target'. */
3605 static void
3606 copy_archive (bfd *ibfd, bfd *obfd, const char *output_target,
3607 bool force_output_target,
3608 const bfd_arch_info_type *input_arch)
3610 struct name_list
3612 struct name_list *next;
3613 char *name;
3614 bfd *obfd;
3615 } *list;
3616 bfd **ptr = &obfd->archive_head;
3617 bfd *this_element;
3618 char *dir = NULL;
3619 char *filename;
3621 list = NULL;
3623 /* PR 24281: It is not clear what should happen when copying a thin archive.
3624 One part is straight forward - if the output archive is in a different
3625 directory from the input archive then any relative paths in the library
3626 should be adjusted to the new location. But if any transformation
3627 options are active (eg strip, rename, add, etc) then the implication is
3628 that these should be applied to the files pointed to by the archive.
3629 But since objcopy is not destructive, this means that new files must be
3630 created, and there is no guidance for the names of the new files. (Plus
3631 this conflicts with one of the goals of thin libraries - only taking up
3632 a minimal amount of space in the file system).
3634 So for now we fail if an attempt is made to copy such libraries. */
3635 if (ibfd->is_thin_archive)
3637 status = 1;
3638 bfd_set_error (bfd_error_invalid_operation);
3639 bfd_nonfatal_message (NULL, ibfd, NULL,
3640 _("sorry: copying thin archives is not currently supported"));
3641 goto cleanup_and_exit;
3644 /* Make a temp directory to hold the contents. */
3645 dir = make_tempdir (bfd_get_filename (obfd));
3646 if (dir == NULL)
3647 fatal (_("cannot create tempdir for archive copying (error: %s)"),
3648 strerror (errno));
3650 if (strip_symbols == STRIP_ALL)
3651 obfd->has_armap = false;
3652 else
3653 obfd->has_armap = ibfd->has_armap;
3654 obfd->is_thin_archive = ibfd->is_thin_archive;
3656 if (deterministic)
3657 obfd->flags |= BFD_DETERMINISTIC_OUTPUT;
3659 this_element = bfd_openr_next_archived_file (ibfd, NULL);
3661 if (!bfd_set_format (obfd, bfd_get_format (ibfd)))
3663 status = 1;
3664 bfd_nonfatal_message (NULL, obfd, NULL, NULL);
3665 goto cleanup_and_exit;
3668 while (!status && this_element != NULL)
3670 char *output_name;
3671 bfd *output_element;
3672 struct stat buf;
3673 int stat_status = 0;
3674 bool ok_object;
3675 const char *element_name;
3677 element_name = bfd_get_filename (this_element);
3678 /* PR binutils/17533: Do not allow directory traversal
3679 outside of the current directory tree by archive members. */
3680 if (! is_valid_archive_path (element_name))
3682 non_fatal (_("warning: illegal pathname found in archive member: %s"),
3683 element_name);
3684 /* PR binutils/31250: But there tools which create archives
3685 containing absolute paths, so instead of failing here, try to
3686 create a suitable alternative pathname. */
3687 element_name = lbasename (element_name);
3688 non_fatal (_("warning: using the basename of the member instead: %s"),
3689 element_name);
3692 /* Create an output file for this member. */
3693 output_name = concat (dir, "/", element_name, (char *) 0);
3695 /* If the file already exists, make another temp dir. */
3696 if (stat (output_name, &buf) >= 0)
3698 char * tmpdir = make_tempdir (output_name);
3700 free (output_name);
3701 if (tmpdir == NULL)
3703 non_fatal (_("cannot create tempdir for archive copying (error: %s)"),
3704 strerror (errno));
3705 bfd_close (this_element);
3706 status = 1;
3707 goto cleanup_and_exit;
3710 struct name_list *l = xmalloc (sizeof (*l));
3711 l->name = tmpdir;
3712 l->next = list;
3713 l->obfd = NULL;
3714 list = l;
3715 output_name = concat (tmpdir, "/", element_name, (char *) 0);
3718 if (preserve_dates)
3720 memset (&buf, 0, sizeof (buf));
3721 stat_status = bfd_stat_arch_elt (this_element, &buf);
3723 if (stat_status != 0)
3724 non_fatal (_("internal stat error on %s"), element_name);
3727 struct name_list *l = xmalloc (sizeof (*l));
3728 l->name = output_name;
3729 l->next = list;
3730 l->obfd = NULL;
3731 list = l;
3733 ok_object = bfd_check_format (this_element, bfd_object);
3734 if (!ok_object)
3735 bfd_nonfatal_message (NULL, this_element, NULL,
3736 _("Unable to recognise the format of file"));
3738 /* PR binutils/3110: Cope with archives
3739 containing multiple target types. */
3740 if (force_output_target || !ok_object)
3741 output_element = bfd_openw (output_name, output_target);
3742 else
3743 output_element = bfd_openw (output_name, bfd_get_target (this_element));
3745 if (output_element == NULL)
3747 bfd_nonfatal_message (output_name, NULL, NULL, NULL);
3748 bfd_close (this_element);
3749 status = 1;
3750 goto cleanup_and_exit;
3753 if (ok_object)
3755 status = !copy_object (this_element, output_element, input_arch);
3757 if (status && bfd_get_arch (this_element) == bfd_arch_unknown)
3758 /* Try again as an unknown object file. */
3759 ok_object = false;
3762 if (!ok_object)
3763 status = !copy_unknown_object (this_element, output_element);
3765 if (!(ok_object && !status
3766 ? bfd_close : bfd_close_all_done) (output_element))
3768 bfd_nonfatal_message (output_name, NULL, NULL, NULL);
3769 /* Error in new object file. Don't change archive. */
3770 status = 1;
3773 if (status)
3775 unlink (output_name);
3776 free (output_name);
3777 list->name = NULL;
3778 bfd_close (this_element);
3780 else
3782 if (preserve_dates && stat_status == 0)
3783 set_times (output_name, &buf);
3785 /* Open the newly created output file and attach to our list. */
3786 output_element = bfd_openr (output_name, output_target);
3788 list->obfd = output_element;
3790 *ptr = output_element;
3791 ptr = &output_element->archive_next;
3793 bfd *last_element = this_element;
3794 this_element = bfd_openr_next_archived_file (ibfd, last_element);
3795 bfd_close (last_element);
3798 *ptr = NULL;
3800 cleanup_and_exit:
3801 filename = xstrdup (bfd_get_filename (obfd));
3802 if (!(status == 0 ? bfd_close : bfd_close_all_done) (obfd))
3804 if (!status)
3805 bfd_nonfatal_message (filename, NULL, NULL, NULL);
3806 status = 1;
3808 free (filename);
3810 filename = xstrdup (bfd_get_filename (ibfd));
3811 if (!bfd_close (ibfd))
3813 if (!status)
3814 bfd_nonfatal_message (filename, NULL, NULL, NULL);
3815 status = 1;
3817 free (filename);
3819 /* Delete all the files that we opened. */
3820 struct name_list *l, *next;
3821 for (l = list; l != NULL; l = next)
3823 if (l->name != NULL)
3825 if (l->obfd == NULL)
3826 rmdir (l->name);
3827 else
3829 bfd_close (l->obfd);
3830 unlink (l->name);
3832 free (l->name);
3834 next = l->next;
3835 free (l);
3838 if (dir)
3840 rmdir (dir);
3841 free (dir);
3845 /* The top-level control. */
3847 static void
3848 copy_file (const char *input_filename, const char *output_filename, int ofd,
3849 struct stat *in_stat, const char *input_target,
3850 const char *output_target, const bfd_arch_info_type *input_arch)
3852 bfd *ibfd;
3853 char **obj_matching;
3854 char **core_matching;
3855 off_t size = get_file_size (input_filename);
3857 if (size < 1)
3859 if (size == 0)
3860 non_fatal (_("error: the input file '%s' is empty"),
3861 input_filename);
3862 status = 1;
3863 return;
3866 /* To allow us to do "strip *" without dying on the first
3867 non-object file, failures are nonfatal. */
3868 ibfd = bfd_openr (input_filename, input_target);
3869 if (ibfd == NULL || bfd_stat (ibfd, in_stat) != 0)
3871 bfd_nonfatal_message (input_filename, NULL, NULL, NULL);
3872 if (ibfd != NULL)
3873 bfd_close (ibfd);
3874 status = 1;
3875 return;
3878 switch (do_debug_sections)
3880 case compress_gnu_zlib:
3881 ibfd->flags |= BFD_COMPRESS;
3882 break;
3883 case compress:
3884 case compress_zlib:
3885 /* The above two cases ought to just set BFD_COMPRESS for non-ELF
3886 but we can't tell whether a file is ELF or not until after
3887 bfd_check_format_matches. FIXME maybe: decide compression
3888 style in BFD after bfd_check_format_matches. */
3889 case compress_gabi_zlib:
3890 ibfd->flags |= BFD_COMPRESS | BFD_COMPRESS_GABI;
3891 break;
3892 case compress_zstd:
3893 ibfd->flags |= BFD_COMPRESS | BFD_COMPRESS_GABI | BFD_COMPRESS_ZSTD;
3894 #ifndef HAVE_ZSTD
3895 fatal (_ ("--compress-debug-sections=zstd: binutils is not built with "
3896 "zstd support"));
3897 #endif
3898 break;
3899 case decompress:
3900 ibfd->flags |= BFD_DECOMPRESS;
3901 break;
3902 default:
3903 break;
3906 switch (do_elf_stt_common)
3908 case elf_stt_common:
3909 ibfd->flags |= BFD_CONVERT_ELF_COMMON | BFD_USE_ELF_STT_COMMON;
3910 break;
3911 break;
3912 case no_elf_stt_common:
3913 ibfd->flags |= BFD_CONVERT_ELF_COMMON;
3914 break;
3915 default:
3916 break;
3919 if (bfd_check_format (ibfd, bfd_archive))
3921 bool force_output_target;
3922 bfd *obfd;
3924 /* bfd_get_target does not return the correct value until
3925 bfd_check_format succeeds. */
3926 if (output_target == NULL)
3928 output_target = bfd_get_target (ibfd);
3929 force_output_target = false;
3931 else
3932 force_output_target = true;
3934 if (ofd >= 0)
3935 obfd = bfd_fdopenw (output_filename, output_target, ofd);
3936 else
3937 obfd = bfd_openw (output_filename, output_target);
3939 if (obfd == NULL)
3941 if (ofd >= 0)
3942 close (ofd);
3943 bfd_nonfatal_message (output_filename, NULL, NULL, NULL);
3944 bfd_close (ibfd);
3945 status = 1;
3946 return;
3949 if (gnu_debuglink_filename != NULL)
3951 non_fatal (_("--add-gnu-debuglink ignored for archive %s"),
3952 bfd_get_filename (ibfd));
3953 gnu_debuglink_filename = NULL;
3956 copy_archive (ibfd, obfd, output_target, force_output_target, input_arch);
3958 else if (bfd_check_format_matches (ibfd, bfd_object, &obj_matching))
3960 bfd *obfd;
3961 do_copy:
3963 /* bfd_get_target does not return the correct value until
3964 bfd_check_format succeeds. */
3965 if (output_target == NULL)
3966 output_target = bfd_get_target (ibfd);
3968 if (ofd >= 0)
3969 obfd = bfd_fdopenw (output_filename, output_target, ofd);
3970 else
3971 obfd = bfd_openw (output_filename, output_target);
3973 if (obfd == NULL)
3975 if (ofd >= 0)
3976 close (ofd);
3977 bfd_nonfatal_message (output_filename, NULL, NULL, NULL);
3978 bfd_close (ibfd);
3979 status = 1;
3980 return;
3983 if (! copy_object (ibfd, obfd, input_arch))
3984 status = 1;
3986 /* PR 17512: file: 0f15796a.
3987 If the file could not be copied it may not be in a writeable
3988 state. So use bfd_close_all_done to avoid the possibility of
3989 writing uninitialised data into the file. */
3990 if (! (status ? bfd_close_all_done (obfd) : bfd_close (obfd)))
3992 status = 1;
3993 bfd_nonfatal_message (output_filename, NULL, NULL, NULL);
3996 if (!bfd_close (ibfd))
3998 status = 1;
3999 bfd_nonfatal_message (input_filename, NULL, NULL, NULL);
4002 else
4004 bfd_error_type obj_error = bfd_get_error ();
4005 bfd_error_type core_error;
4007 if (bfd_check_format_matches (ibfd, bfd_core, &core_matching))
4009 /* This probably can't happen.. */
4010 if (obj_error == bfd_error_file_ambiguously_recognized)
4011 free (obj_matching);
4012 goto do_copy;
4015 core_error = bfd_get_error ();
4016 /* Report the object error in preference to the core error. */
4017 if (obj_error != core_error)
4018 bfd_set_error (obj_error);
4020 bfd_nonfatal_message (input_filename, NULL, NULL, NULL);
4022 if (obj_error == bfd_error_file_ambiguously_recognized)
4023 list_matching_formats (obj_matching);
4024 if (core_error == bfd_error_file_ambiguously_recognized)
4025 list_matching_formats (core_matching);
4027 bfd_close (ibfd);
4028 status = 1;
4032 /* Add a name to the section renaming list. */
4034 static void
4035 add_section_rename (const char * old_name, const char * new_name,
4036 flagword flags)
4038 section_rename * srename;
4040 /* Check for conflicts first. */
4041 for (srename = section_rename_list; srename != NULL; srename = srename->next)
4042 if (strcmp (srename->old_name, old_name) == 0)
4044 /* Silently ignore duplicate definitions. */
4045 if (strcmp (srename->new_name, new_name) == 0
4046 && srename->flags == flags)
4047 return;
4049 fatal (_("Multiple renames of section %s"), old_name);
4052 srename = (section_rename *) xmalloc (sizeof (* srename));
4054 srename->old_name = old_name;
4055 srename->new_name = new_name;
4056 srename->flags = flags;
4057 srename->next = section_rename_list;
4059 section_rename_list = srename;
4062 /* Check the section rename list for a new name of the input section
4063 called OLD_NAME. Returns the new name if one is found and sets
4064 RETURNED_FLAGS if non-NULL to the flags to be used for this section. */
4066 static const char *
4067 find_section_rename (const char *old_name, flagword *returned_flags)
4069 const section_rename *srename;
4071 for (srename = section_rename_list; srename != NULL; srename = srename->next)
4072 if (strcmp (srename->old_name, old_name) == 0)
4074 if (returned_flags != NULL && srename->flags != (flagword) -1)
4075 *returned_flags = srename->flags;
4077 return srename->new_name;
4080 return old_name;
4083 /* Once each of the sections is copied, we may still need to do some
4084 finalization work for private section headers. Do that here. */
4086 static void
4087 setup_bfd_headers (bfd *ibfd, bfd *obfd)
4089 /* Allow the BFD backend to copy any private data it understands
4090 from the input section to the output section. */
4091 if (! bfd_copy_private_header_data (ibfd, obfd))
4093 status = 1;
4094 bfd_nonfatal_message (NULL, ibfd, NULL,
4095 _("error in private header data"));
4096 return;
4099 /* All went well. */
4100 return;
4103 static inline signed int
4104 power_of_two (bfd_vma val)
4106 signed int result = 0;
4108 if (val == 0)
4109 return 0;
4111 while ((val & 1) == 0)
4113 val >>= 1;
4114 ++result;
4117 if (val != 1)
4118 /* Number has more than one 1, i.e. wasn't a power of 2. */
4119 return -1;
4121 return result;
4124 static unsigned int
4125 image_scn_align (unsigned int alignment)
4127 switch (alignment)
4129 case 8192: return IMAGE_SCN_ALIGN_8192BYTES;
4130 case 4096: return IMAGE_SCN_ALIGN_4096BYTES;
4131 case 2048: return IMAGE_SCN_ALIGN_2048BYTES;
4132 case 1024: return IMAGE_SCN_ALIGN_1024BYTES;
4133 case 512: return IMAGE_SCN_ALIGN_512BYTES;
4134 case 256: return IMAGE_SCN_ALIGN_256BYTES;
4135 case 128: return IMAGE_SCN_ALIGN_128BYTES;
4136 case 64: return IMAGE_SCN_ALIGN_64BYTES;
4137 case 32: return IMAGE_SCN_ALIGN_32BYTES;
4138 case 16: return IMAGE_SCN_ALIGN_16BYTES;
4139 case 8: return IMAGE_SCN_ALIGN_8BYTES;
4140 case 4: return IMAGE_SCN_ALIGN_4BYTES;
4141 case 2: return IMAGE_SCN_ALIGN_2BYTES;
4142 case 1: return IMAGE_SCN_ALIGN_1BYTES;
4143 default: return 0;
4147 /* Create a section in OBFD with the same
4148 name and attributes as ISECTION in IBFD. */
4150 static void
4151 setup_section (bfd *ibfd, sec_ptr isection, void *obfdarg)
4153 bfd *obfd = (bfd *) obfdarg;
4154 struct section_list *p;
4155 sec_ptr osection;
4156 bfd_size_type size;
4157 bfd_vma vma;
4158 bfd_vma lma;
4159 flagword flags;
4160 const char *err = NULL;
4161 const char * name;
4162 const char * new_name;
4163 char *prefix = NULL;
4164 bool make_nobits;
4165 unsigned int alignment;
4167 if (is_strip_section (ibfd, isection))
4168 return;
4170 /* Get the, possibly new, name of the output section. */
4171 name = bfd_section_name (isection);
4172 flags = bfd_section_flags (isection);
4173 if (bfd_get_flavour (ibfd) != bfd_get_flavour (obfd))
4175 flags &= bfd_applicable_section_flags (ibfd);
4176 flags &= bfd_applicable_section_flags (obfd);
4178 new_name = find_section_rename (name, &flags);
4179 if (new_name != name)
4181 name = new_name;
4182 flags = check_new_section_flags (flags, obfd, name);
4185 /* Prefix sections. */
4186 if (prefix_alloc_sections_string
4187 && (bfd_section_flags (isection) & SEC_ALLOC) != 0)
4188 prefix = prefix_alloc_sections_string;
4189 else if (prefix_sections_string)
4190 prefix = prefix_sections_string;
4192 if (prefix)
4194 char *n;
4196 n = (char *) xmalloc (strlen (prefix) + strlen (name) + 1);
4197 strcpy (n, prefix);
4198 strcat (n, name);
4199 name = n;
4202 make_nobits = false;
4204 p = find_section_list (bfd_section_name (isection), false,
4205 SECTION_CONTEXT_SET_FLAGS);
4206 if (p != NULL)
4208 flags = p->flags | (flags & (SEC_HAS_CONTENTS | SEC_RELOC));
4209 flags = check_new_section_flags (flags, obfd, bfd_section_name (isection));
4211 else
4213 flagword clr = 0;
4215 /* For --extract-symbols where section sizes are zeroed, clear
4216 SEC_LOAD to indicate to coff_compute_section_file_positions that
4217 section sizes should not be adjusted for ALIGN_SECTIONS_IN_FILE.
4218 We don't want to clear SEC_HAS_CONTENTS as that will result
4219 in symbols being classified as 'B' by nm. */
4220 if (extract_symbol)
4221 clr = SEC_LOAD;
4222 /* If only keeping debug sections then we'll be keeping section
4223 sizes in headers but making the sections have no contents. */
4224 else if (strip_symbols == STRIP_NONDEBUG
4225 && (flags & (SEC_ALLOC | SEC_GROUP)) != 0
4226 && !is_nondebug_keep_contents_section (ibfd, isection))
4227 clr = SEC_HAS_CONTENTS | SEC_LOAD | SEC_GROUP;
4229 if (clr && bfd_get_flavour (obfd) == bfd_target_elf_flavour)
4231 /* PR 29532: Copy group sections intact as otherwise we end up with
4232 empty groups. This prevents separate debug info files from
4233 being used with GDB, if they were based upon files that
4234 originally contained groups. */
4235 if (flags & SEC_GROUP)
4236 clr = SEC_LOAD;
4237 if ((clr & SEC_HAS_CONTENTS) != 0)
4238 make_nobits = true;
4240 /* Twiddle the input section flags so that it seems to
4241 elf.c:copy_private_bfd_data that section flags have not
4242 changed between input and output sections. This hack
4243 prevents wholesale rewriting of the program headers. */
4244 isection->flags &= ~clr;
4246 flags &= ~clr;
4249 if (!bfd_convert_section_setup (ibfd, isection, obfd, &name, &size))
4251 osection = NULL;
4252 err = _("failed to create output section");
4253 goto loser;
4256 osection = bfd_make_section_anyway_with_flags (obfd, name, flags);
4258 if (osection == NULL)
4260 err = _("failed to create output section");
4261 goto loser;
4264 if (copy_byte >= 0)
4265 size = (size + interleave - 1) / interleave * copy_width;
4266 else if (extract_symbol)
4267 size = 0;
4268 if (!bfd_set_section_size (osection, size))
4269 err = _("failed to set size");
4271 bool vma_set_by_user = false;
4273 vma = bfd_section_vma (isection);
4274 p = find_section_list (bfd_section_name (isection), false,
4275 SECTION_CONTEXT_ALTER_VMA | SECTION_CONTEXT_SET_VMA);
4276 if (p != NULL)
4278 if (p->context & SECTION_CONTEXT_SET_VMA)
4279 vma = p->vma_val;
4280 else
4281 vma += p->vma_val;
4282 vma_set_by_user = true;
4284 else
4285 vma += change_section_address;
4287 if (!bfd_set_section_vma (osection, vma))
4288 err = _("failed to set vma");
4290 bool lma_set_by_user = false;
4292 lma = isection->lma;
4293 p = find_section_list (bfd_section_name (isection), false,
4294 SECTION_CONTEXT_ALTER_LMA | SECTION_CONTEXT_SET_LMA);
4295 if (p != NULL)
4297 if (p->context & SECTION_CONTEXT_ALTER_LMA)
4298 lma += p->lma_val;
4299 else
4300 lma = p->lma_val;
4301 lma_set_by_user = true;
4303 else
4304 lma += change_section_address;
4306 osection->lma = lma;
4308 p = find_section_list (bfd_section_name (isection), false,
4309 SECTION_CONTEXT_SET_ALIGNMENT);
4310 if (p != NULL)
4311 alignment = p->alignment;
4312 else if (pe_section_alignment != (bfd_vma) -1
4313 && bfd_get_flavour (obfd) == bfd_target_coff_flavour)
4315 alignment = power_of_two (pe_section_alignment);
4317 if (coff_section_data (ibfd, isection))
4319 struct pei_section_tdata * pei_data = pei_section_data (ibfd, isection);
4321 if (pei_data != NULL)
4323 /* Set the alignment flag of the input section, which will
4324 be copied to the output section later on. */
4325 pei_data->pe_flags &= ~IMAGE_SCN_ALIGN_POWER_BIT_MASK;
4326 pei_data->pe_flags |= image_scn_align (pe_section_alignment);
4330 else
4331 alignment = bfd_section_alignment (isection);
4333 /* FIXME: This is probably not enough. If we change the LMA we
4334 may have to recompute the header for the file as well. */
4335 if (!bfd_set_section_alignment (osection, alignment))
4336 err = _("failed to set alignment");
4338 /* If the output section's VMA is not aligned
4339 and the alignment has changed
4340 and the VMA was not set by the user
4341 and the section does not have relocations associated with it
4342 then warn the user. */
4343 if (osection->vma != 0
4344 && (alignment >= sizeof (bfd_vma) * CHAR_BIT
4345 || (osection->vma & (((bfd_vma) 1 << alignment) - 1)) != 0)
4346 && alignment != bfd_section_alignment (isection)
4347 && change_section_address == 0
4348 && ! vma_set_by_user
4349 && bfd_get_reloc_upper_bound (ibfd, isection) < 1)
4351 non_fatal (_("output section %s's alignment does not match its VMA"), name);
4354 /* Similar check for a non-aligned LMA.
4355 FIXME: Since this is only an LMA, maybe it does not matter if
4356 it is not aligned ? */
4357 if (osection->lma != 0
4358 && (alignment >= sizeof (bfd_vma) * CHAR_BIT
4359 || (osection->lma & (((bfd_vma) 1 << alignment) - 1)) != 0)
4360 && alignment != bfd_section_alignment (isection)
4361 && change_section_address == 0
4362 && ! lma_set_by_user
4363 && bfd_get_reloc_upper_bound (ibfd, isection) < 1)
4365 non_fatal (_("output section %s's alignment does not match its LMA"), name);
4368 /* Copy merge entity size. */
4369 osection->entsize = isection->entsize;
4371 /* Copy compress status. */
4372 osection->compress_status = isection->compress_status;
4374 /* This used to be mangle_section; we do here to avoid using
4375 bfd_get_section_by_name since some formats allow multiple
4376 sections with the same name. */
4377 isection->output_section = osection;
4378 isection->output_offset = 0;
4380 if ((isection->flags & SEC_GROUP) != 0)
4382 asymbol *gsym = group_signature (isection);
4384 if (gsym != NULL)
4386 gsym->flags |= BSF_KEEP;
4387 if (bfd_get_flavour (ibfd) == bfd_target_elf_flavour)
4388 elf_group_id (isection) = gsym;
4392 /* Allow the BFD backend to copy any private data it understands
4393 from the input section to the output section. */
4394 if (!bfd_copy_private_section_data (ibfd, isection, obfd, osection))
4395 err = _("failed to copy private data");
4397 if (make_nobits)
4398 elf_section_type (osection) = SHT_NOBITS;
4400 if (!err)
4401 return;
4403 loser:
4404 status = 1;
4405 bfd_nonfatal_message (NULL, obfd, osection, err);
4408 /* Return TRUE if input section ISECTION should be skipped. */
4410 static bool
4411 skip_section (bfd *ibfd, sec_ptr isection, bool skip_copy)
4413 sec_ptr osection;
4414 bfd_size_type size;
4415 flagword flags;
4417 /* If we have already failed earlier on,
4418 do not keep on generating complaints now. */
4419 if (status != 0)
4420 return true;
4422 if (extract_symbol)
4423 return true;
4425 if (is_strip_section (ibfd, isection))
4426 return true;
4428 if (is_update_section (ibfd, isection))
4429 return true;
4431 /* When merging a note section we skip the copying of the contents,
4432 but not the copying of the relocs associated with the contents. */
4433 if (skip_copy && is_mergeable_note_section (ibfd, isection))
4434 return true;
4436 flags = bfd_section_flags (isection);
4437 if ((flags & SEC_GROUP) != 0)
4438 return true;
4440 osection = isection->output_section;
4441 size = bfd_section_size (isection);
4443 if (size == 0 || osection == 0)
4444 return true;
4446 return false;
4449 /* Add section SECTION_PATTERN to the list of sections that will have their
4450 relocations removed. */
4452 static void
4453 handle_remove_relocations_option (const char *section_pattern)
4455 find_section_list (section_pattern, true, SECTION_CONTEXT_REMOVE_RELOCS);
4458 /* Return TRUE if ISECTION from IBFD should have its relocations removed,
4459 otherwise return FALSE. If the user has requested that relocations be
4460 removed from a section that does not have relocations then this
4461 function will still return TRUE. */
4463 static bool
4464 discard_relocations (bfd *ibfd ATTRIBUTE_UNUSED, asection *isection)
4466 return (find_section_list (bfd_section_name (isection), false,
4467 SECTION_CONTEXT_REMOVE_RELOCS) != NULL);
4470 /* Wrapper for dealing with --remove-section (-R) command line arguments.
4471 A special case is detected here, if the user asks to remove a relocation
4472 section (one starting with ".rela" or ".rel") then this removal must
4473 be done using a different technique in a relocatable object. */
4475 static void
4476 handle_remove_section_option (const char *section_pattern)
4478 find_section_list (section_pattern, true, SECTION_CONTEXT_REMOVE);
4479 if (startswith (section_pattern, ".rel"))
4481 section_pattern += 4;
4482 if (*section_pattern == 'a')
4483 section_pattern++;
4484 if (*section_pattern)
4485 handle_remove_relocations_option (section_pattern);
4487 sections_removed = true;
4490 /* Copy relocations in input section ISECTION of IBFD to an output
4491 section with the same name in OBFDARG. If stripping then don't
4492 copy any relocation info. */
4494 static void
4495 copy_relocations_in_section (bfd *ibfd, sec_ptr isection, void *obfdarg)
4497 bfd *obfd = (bfd *) obfdarg;
4498 long relsize;
4499 arelent **relpp;
4500 long relcount;
4501 sec_ptr osection;
4503 if (skip_section (ibfd, isection, false))
4504 return;
4506 osection = isection->output_section;
4508 /* Core files and DWO files do not need to be relocated. */
4509 if (bfd_get_format (obfd) == bfd_core
4510 || strip_symbols == STRIP_NONDWO
4511 || (strip_symbols == STRIP_ALL
4512 && htab_elements (keep_specific_htab) == 0)
4513 || discard_relocations (ibfd, isection))
4514 relsize = 0;
4515 else
4517 relsize = bfd_get_reloc_upper_bound (ibfd, isection);
4519 if (relsize < 0)
4521 /* Do not complain if the target does not support relocations. */
4522 if (relsize == -1 && bfd_get_error () == bfd_error_invalid_operation)
4523 relsize = 0;
4524 else
4526 status = 1;
4527 bfd_nonfatal_message (NULL, ibfd, isection, NULL);
4528 return;
4533 if (relsize == 0)
4534 bfd_set_reloc (obfd, osection, NULL, 0);
4535 else
4537 if (isection->orelocation != NULL)
4539 /* Some other function has already set up the output relocs
4540 for us, so scan those instead of the default relocs. */
4541 relcount = isection->reloc_count;
4542 relpp = isection->orelocation;
4544 else
4546 relpp = bfd_xalloc (obfd, relsize);
4547 relcount = bfd_canonicalize_reloc (ibfd, isection, relpp, isympp);
4548 if (relcount < 0)
4550 status = 1;
4551 bfd_nonfatal_message (NULL, ibfd, isection,
4552 _("relocation count is negative"));
4553 return;
4557 if (strip_symbols == STRIP_ALL)
4559 /* Remove relocations which are not in
4560 keep_strip_specific_list. */
4561 arelent **w_relpp;
4562 long i;
4564 for (w_relpp = relpp, i = 0; i < relcount; i++)
4565 /* PR 17512: file: 9e907e0c. */
4566 if (relpp[i]->sym_ptr_ptr
4567 /* PR 20096 */
4568 && *relpp[i]->sym_ptr_ptr
4569 && is_specified_symbol (bfd_asymbol_name (*relpp[i]->sym_ptr_ptr),
4570 keep_specific_htab))
4571 *w_relpp++ = relpp[i];
4572 relcount = w_relpp - relpp;
4573 *w_relpp = 0;
4576 bfd_set_reloc (obfd, osection, relcount == 0 ? NULL : relpp, relcount);
4580 /* Copy the data of input section ISECTION of IBFD
4581 to an output section with the same name in OBFD. */
4583 static void
4584 copy_section (bfd *ibfd, sec_ptr isection, void *obfdarg)
4586 bfd *obfd = (bfd *) obfdarg;
4587 struct section_list *p;
4588 sec_ptr osection;
4589 bfd_size_type size;
4591 if (skip_section (ibfd, isection, true))
4592 return;
4594 osection = isection->output_section;
4595 /* The output SHF_COMPRESSED section size is different from input if
4596 ELF classes of input and output aren't the same. We can't use
4597 the output section size since --interleave will shrink the output
4598 section. Size will be updated if the section is converted. */
4599 size = bfd_section_size (isection);
4601 if (bfd_section_flags (isection) & SEC_HAS_CONTENTS
4602 && bfd_section_flags (osection) & SEC_HAS_CONTENTS)
4604 bfd_byte *memhunk = NULL;
4606 if (!bfd_get_full_section_contents (ibfd, isection, &memhunk)
4607 || !bfd_convert_section_contents (ibfd, isection, obfd,
4608 &memhunk, &size))
4610 bfd_set_section_size (osection, 0);
4611 status = 1;
4612 bfd_nonfatal_message (NULL, ibfd, isection, NULL);
4613 free (memhunk);
4614 return;
4617 if (reverse_bytes)
4619 /* We don't handle leftover bytes (too many possible behaviors,
4620 and we don't know what the user wants). The section length
4621 must be a multiple of the number of bytes to swap. */
4622 if ((size % reverse_bytes) == 0)
4624 unsigned long i, j;
4625 bfd_byte b;
4627 for (i = 0; i < size; i += reverse_bytes)
4628 for (j = 0; j < (unsigned long)(reverse_bytes / 2); j++)
4630 bfd_byte *m = (bfd_byte *) memhunk;
4632 b = m[i + j];
4633 m[i + j] = m[(i + reverse_bytes) - (j + 1)];
4634 m[(i + reverse_bytes) - (j + 1)] = b;
4637 else
4638 /* User must pad the section up in order to do this. */
4639 fatal (_("cannot reverse bytes: length of section %s must be evenly divisible by %d"),
4640 bfd_section_name (isection), reverse_bytes);
4643 if (copy_byte >= 0)
4645 /* Keep only every `copy_byte'th byte in MEMHUNK. */
4646 char *from = (char *) memhunk + copy_byte;
4647 char *to = (char *) memhunk;
4648 char *end = (char *) memhunk + size;
4649 int i;
4651 /* If the section address is not exactly divisible by the interleave,
4652 then we must bias the from address. If the copy_byte is less than
4653 the bias, then we must skip forward one interleave, and increment
4654 the final lma. */
4655 int extra = isection->lma % interleave;
4656 from -= extra;
4657 if (copy_byte < extra)
4658 from += interleave;
4660 for (; from < end; from += interleave)
4661 for (i = 0; i < copy_width; i++)
4663 if (&from[i] >= end)
4664 break;
4665 *to++ = from[i];
4668 size = (size + interleave - 1 - copy_byte) / interleave * copy_width;
4669 osection->lma /= interleave;
4670 if (copy_byte < extra)
4671 osection->lma++;
4674 if (!bfd_set_section_contents (obfd, osection, memhunk, 0, size))
4676 status = 1;
4677 bfd_nonfatal_message (NULL, obfd, osection, NULL);
4678 free (memhunk);
4679 return;
4681 free (memhunk);
4683 else if ((p = find_section_list (bfd_section_name (isection),
4684 false, SECTION_CONTEXT_SET_FLAGS)) != NULL
4685 && (p->flags & SEC_HAS_CONTENTS) != 0)
4687 void *memhunk = xmalloc (size);
4689 /* We don't permit the user to turn off the SEC_HAS_CONTENTS
4690 flag--they can just remove the section entirely and add it
4691 back again. However, we do permit them to turn on the
4692 SEC_HAS_CONTENTS flag, and take it to mean that the section
4693 contents should be zeroed out. */
4695 memset (memhunk, 0, size);
4696 if (! bfd_set_section_contents (obfd, osection, memhunk, 0, size))
4698 status = 1;
4699 bfd_nonfatal_message (NULL, obfd, osection, NULL);
4700 free (memhunk);
4701 return;
4703 free (memhunk);
4707 /* Get all the sections. This is used when --gap-fill or --pad-to is
4708 used. */
4710 static void
4711 get_sections (bfd *obfd ATTRIBUTE_UNUSED, asection *osection, void *secppparg)
4713 asection ***secppp = (asection ***) secppparg;
4715 **secppp = osection;
4716 ++(*secppp);
4719 /* Sort sections by LMA. This is called via qsort, and is used when
4720 --gap-fill or --pad-to is used. We force non loadable or empty
4721 sections to the front, where they are easier to ignore. */
4723 static int
4724 compare_section_lma (const void *arg1, const void *arg2)
4726 const asection *sec1 = *(const asection **) arg1;
4727 const asection *sec2 = *(const asection **) arg2;
4728 flagword flags1, flags2;
4730 /* Sort non loadable sections to the front. */
4731 flags1 = sec1->flags;
4732 flags2 = sec2->flags;
4733 if ((flags1 & SEC_HAS_CONTENTS) == 0
4734 || (flags1 & SEC_LOAD) == 0)
4736 if ((flags2 & SEC_HAS_CONTENTS) != 0
4737 && (flags2 & SEC_LOAD) != 0)
4738 return -1;
4740 else
4742 if ((flags2 & SEC_HAS_CONTENTS) == 0
4743 || (flags2 & SEC_LOAD) == 0)
4744 return 1;
4747 /* Sort sections by LMA. */
4748 if (sec1->lma > sec2->lma)
4749 return 1;
4750 if (sec1->lma < sec2->lma)
4751 return -1;
4753 /* Sort sections with the same LMA by size. */
4754 if (bfd_section_size (sec1) > bfd_section_size (sec2))
4755 return 1;
4756 if (bfd_section_size (sec1) < bfd_section_size (sec2))
4757 return -1;
4759 if (sec1->id > sec2->id)
4760 return 1;
4761 if (sec1->id < sec2->id)
4762 return -1;
4763 return 0;
4766 /* Mark all the symbols which will be used in output relocations with
4767 the BSF_KEEP flag so that those symbols will not be stripped.
4769 Ignore relocations which will not appear in the output file. */
4771 static void
4772 mark_symbols_used_in_relocations (bfd *ibfd, sec_ptr isection, void *symbolsarg)
4774 asymbol **symbols = (asymbol **) symbolsarg;
4775 long relsize;
4776 arelent **relpp;
4777 long relcount, i;
4779 /* Ignore an input section with no corresponding output section. */
4780 if (isection->output_section == NULL)
4781 return;
4783 relsize = bfd_get_reloc_upper_bound (ibfd, isection);
4784 if (relsize < 0)
4786 /* Do not complain if the target does not support relocations. */
4787 if (relsize == -1 && bfd_get_error () == bfd_error_invalid_operation)
4788 return;
4789 bfd_fatal (bfd_get_filename (ibfd));
4792 if (relsize == 0)
4793 return;
4795 relpp = (arelent **) xmalloc (relsize);
4796 relcount = bfd_canonicalize_reloc (ibfd, isection, relpp, symbols);
4797 if (relcount < 0)
4798 bfd_fatal (bfd_get_filename (ibfd));
4800 /* Examine each symbol used in a relocation. If it's not one of the
4801 special bfd section symbols, then mark it with BSF_KEEP. */
4802 for (i = 0; i < relcount; i++)
4804 /* See PRs 20923 and 20930 for reproducers for the NULL tests. */
4805 if (relpp[i]->sym_ptr_ptr != NULL
4806 && * relpp[i]->sym_ptr_ptr != NULL
4807 && *relpp[i]->sym_ptr_ptr != bfd_com_section_ptr->symbol
4808 && *relpp[i]->sym_ptr_ptr != bfd_abs_section_ptr->symbol
4809 && *relpp[i]->sym_ptr_ptr != bfd_und_section_ptr->symbol)
4810 (*relpp[i]->sym_ptr_ptr)->flags |= BSF_KEEP;
4813 free (relpp);
4816 /* Write out debugging information. */
4818 static bool
4819 write_debugging_info (bfd *obfd, void *dhandle,
4820 long *symcountp ATTRIBUTE_UNUSED,
4821 asymbol ***symppp ATTRIBUTE_UNUSED)
4823 if (bfd_get_flavour (obfd) == bfd_target_coff_flavour
4824 || bfd_get_flavour (obfd) == bfd_target_elf_flavour)
4826 bfd_byte *syms, *strings = NULL;
4827 bfd_size_type symsize, stringsize;
4828 asection *stabsec, *stabstrsec;
4829 flagword flags;
4830 bool ret;
4832 if (! write_stabs_in_sections_debugging_info (obfd, dhandle, &syms,
4833 &symsize, &strings,
4834 &stringsize))
4835 return false;
4837 flags = SEC_HAS_CONTENTS | SEC_READONLY | SEC_DEBUGGING;
4838 stabsec = bfd_make_section_with_flags (obfd, ".stab", flags);
4839 stabstrsec = bfd_make_section_with_flags (obfd, ".stabstr", flags);
4840 ret = true;
4841 if (stabsec == NULL
4842 || stabstrsec == NULL
4843 || !bfd_set_section_size (stabsec, symsize)
4844 || !bfd_set_section_size (stabstrsec, stringsize)
4845 || !bfd_set_section_alignment (stabsec, 2)
4846 || !bfd_set_section_alignment (stabstrsec, 0))
4848 bfd_nonfatal_message (NULL, obfd, NULL,
4849 _("can't create debugging section"));
4850 ret = false;
4853 /* We can get away with setting the section contents now because
4854 the next thing the caller is going to do is copy over the
4855 real sections. We may someday have to split the contents
4856 setting out of this function. */
4857 if (ret
4858 && (!bfd_set_section_contents (obfd, stabsec, syms, 0, symsize)
4859 || !bfd_set_section_contents (obfd, stabstrsec, strings, 0,
4860 stringsize)))
4862 bfd_nonfatal_message (NULL, obfd, NULL,
4863 _("can't set debugging section contents"));
4864 ret = false;
4867 free (strings);
4868 free (syms);
4869 return ret;
4872 bfd_nonfatal_message (NULL, obfd, NULL,
4873 _("don't know how to write debugging information for %s"),
4874 bfd_get_target (obfd));
4875 return false;
4878 /* If neither -D nor -U was specified explicitly,
4879 then use the configured default. */
4880 static void
4881 default_deterministic (void)
4883 if (deterministic < 0)
4884 deterministic = DEFAULT_AR_DETERMINISTIC;
4887 static int
4888 strip_main (int argc, char *argv[])
4890 char *input_target = NULL;
4891 char *output_target = NULL;
4892 bool show_version = false;
4893 bool formats_info = false;
4894 int c;
4895 int i;
4896 char *output_file = NULL;
4897 bool merge_notes_set = false;
4899 while ((c = getopt_long (argc, argv, "I:O:F:K:MN:R:o:sSpdgxXHhVvwDU",
4900 strip_options, (int *) 0)) != EOF)
4902 switch (c)
4904 case 'I':
4905 input_target = optarg;
4906 break;
4907 case 'O':
4908 output_target = optarg;
4909 break;
4910 case 'F':
4911 input_target = output_target = optarg;
4912 break;
4913 case 'R':
4914 handle_remove_section_option (optarg);
4915 break;
4916 case OPTION_KEEP_SECTION:
4917 find_section_list (optarg, true, SECTION_CONTEXT_KEEP);
4918 break;
4919 case OPTION_REMOVE_RELOCS:
4920 handle_remove_relocations_option (optarg);
4921 break;
4922 case OPTION_STRIP_SECTION_HEADERS:
4923 strip_section_headers = true;
4924 break;
4925 case 's':
4926 strip_symbols = STRIP_ALL;
4927 break;
4928 case 'S':
4929 case 'g':
4930 case 'd': /* Historic BSD alias for -g. Used by early NetBSD. */
4931 strip_symbols = STRIP_DEBUG;
4932 break;
4933 case OPTION_STRIP_DWO:
4934 strip_symbols = STRIP_DWO;
4935 break;
4936 case OPTION_STRIP_UNNEEDED:
4937 strip_symbols = STRIP_UNNEEDED;
4938 break;
4939 case 'K':
4940 add_specific_symbol (optarg, keep_specific_htab);
4941 break;
4942 case 'M':
4943 merge_notes = true;
4944 merge_notes_set = true;
4945 break;
4946 case OPTION_NO_MERGE_NOTES:
4947 merge_notes = false;
4948 merge_notes_set = true;
4949 break;
4950 case 'N':
4951 add_specific_symbol (optarg, strip_specific_htab);
4952 break;
4953 case 'o':
4954 output_file = optarg;
4955 break;
4956 case 'p':
4957 preserve_dates = true;
4958 break;
4959 case 'D':
4960 deterministic = true;
4961 break;
4962 case 'U':
4963 deterministic = false;
4964 break;
4965 case 'x':
4966 discard_locals = LOCALS_ALL;
4967 break;
4968 case 'X':
4969 discard_locals = LOCALS_START_L;
4970 break;
4971 case 'v':
4972 verbose = true;
4973 break;
4974 case 'V':
4975 show_version = true;
4976 break;
4977 case OPTION_FORMATS_INFO:
4978 formats_info = true;
4979 break;
4980 case OPTION_ONLY_KEEP_DEBUG:
4981 strip_symbols = STRIP_NONDEBUG;
4982 break;
4983 case OPTION_KEEP_FILE_SYMBOLS:
4984 keep_file_symbols = 1;
4985 break;
4986 case OPTION_KEEP_SECTION_SYMBOLS:
4987 keep_section_symbols = true;
4988 break;
4989 case 0:
4990 /* We've been given a long option. */
4991 break;
4992 case 'w':
4993 wildcard = true;
4994 break;
4995 case 'H':
4996 case 'h':
4997 strip_usage (stdout, 0);
4998 default:
4999 strip_usage (stderr, 1);
5003 /* If the user has not expressly chosen to merge/not-merge ELF notes
5004 then enable the merging unless we are stripping debug or dwo info. */
5005 if (! merge_notes_set
5006 && (strip_symbols == STRIP_UNDEF
5007 || strip_symbols == STRIP_ALL
5008 || strip_symbols == STRIP_UNNEEDED
5009 || strip_symbols == STRIP_NONDEBUG
5010 || strip_symbols == STRIP_NONDWO))
5011 merge_notes = true;
5013 if (formats_info)
5015 display_info ();
5016 return 0;
5019 if (show_version)
5020 print_version ("strip");
5022 default_deterministic ();
5024 /* Default is to strip all symbols. */
5025 if (strip_symbols == STRIP_UNDEF
5026 && discard_locals == LOCALS_UNDEF
5027 && htab_elements (strip_specific_htab) == 0)
5028 strip_symbols = STRIP_ALL;
5030 if (output_target == NULL)
5031 output_target = input_target;
5033 i = optind;
5034 if (i == argc
5035 || (output_file != NULL && (i + 1) < argc))
5036 strip_usage (stderr, 1);
5038 for (; i < argc; i++)
5040 int hold_status = status;
5041 struct stat statbuf;
5042 char *tmpname;
5043 int tmpfd = -1;
5044 int copyfd = -1;
5046 if (get_file_size (argv[i]) < 1)
5048 status = 1;
5049 continue;
5052 if (output_file == NULL
5053 || filename_cmp (argv[i], output_file) == 0)
5055 tmpname = make_tempname (argv[i], &tmpfd);
5056 if (tmpfd >= 0)
5057 copyfd = dup (tmpfd);
5059 else
5060 tmpname = output_file;
5062 if (tmpname == NULL)
5064 bfd_nonfatal_message (argv[i], NULL, NULL,
5065 _("could not create temporary file to hold stripped copy"));
5066 status = 1;
5067 continue;
5070 status = 0;
5071 copy_file (argv[i], tmpname, tmpfd, &statbuf, input_target,
5072 output_target, NULL);
5073 if (status == 0)
5075 const char *oname = output_file ? output_file : argv[i];
5076 status = smart_rename (tmpname, oname, copyfd,
5077 &statbuf, preserve_dates) != 0;
5078 if (status == 0)
5079 status = hold_status;
5081 else
5083 if (copyfd >= 0)
5084 close (copyfd);
5085 unlink_if_ordinary (tmpname);
5087 if (output_file != tmpname)
5088 free (tmpname);
5091 return status;
5094 /* Set up PE subsystem. */
5096 static void
5097 set_pe_subsystem (const char *s)
5099 const char *version, *subsystem;
5100 size_t i;
5101 static const struct
5103 const char *name;
5104 const char set_def;
5105 const short value;
5107 v[] =
5109 { "native", 0, IMAGE_SUBSYSTEM_NATIVE },
5110 { "windows", 0, IMAGE_SUBSYSTEM_WINDOWS_GUI },
5111 { "console", 0, IMAGE_SUBSYSTEM_WINDOWS_CUI },
5112 { "posix", 0, IMAGE_SUBSYSTEM_POSIX_CUI },
5113 { "wince", 0, IMAGE_SUBSYSTEM_WINDOWS_CE_GUI },
5114 { "efi-app", 1, IMAGE_SUBSYSTEM_EFI_APPLICATION },
5115 { "efi-bsd", 1, IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER },
5116 { "efi-rtd", 1, IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER },
5117 { "sal-rtd", 1, IMAGE_SUBSYSTEM_SAL_RUNTIME_DRIVER },
5118 { "xbox", 0, IMAGE_SUBSYSTEM_XBOX }
5120 short value;
5121 char *copy;
5122 int set_def = -1;
5124 /* Check for the presence of a version number. */
5125 version = strchr (s, ':');
5126 if (version == NULL)
5127 subsystem = s;
5128 else
5130 int len = version - s;
5131 copy = xstrdup (s);
5132 subsystem = copy;
5133 copy[len] = '\0';
5134 version = copy + 1 + len;
5135 pe_major_subsystem_version = strtoul (version, &copy, 0);
5136 if (*copy == '.')
5137 pe_minor_subsystem_version = strtoul (copy + 1, &copy, 0);
5138 if (*copy != '\0')
5139 non_fatal (_("%s: bad version in PE subsystem"), s);
5142 /* Check for numeric subsystem. */
5143 value = (short) strtol (subsystem, &copy, 0);
5144 if (*copy == '\0')
5146 for (i = 0; i < ARRAY_SIZE (v); i++)
5147 if (v[i].value == value)
5149 pe_subsystem = value;
5150 set_def = v[i].set_def;
5151 break;
5154 else
5156 /* Search for subsystem by name. */
5157 for (i = 0; i < ARRAY_SIZE (v); i++)
5158 if (strcmp (subsystem, v[i].name) == 0)
5160 pe_subsystem = v[i].value;
5161 set_def = v[i].set_def;
5162 break;
5166 switch (set_def)
5168 case -1:
5169 fatal (_("unknown PE subsystem: %s"), s);
5170 break;
5171 case 0:
5172 break;
5173 default:
5174 if (pe_file_alignment == (bfd_vma) -1)
5175 pe_file_alignment = PE_DEF_FILE_ALIGNMENT;
5176 if (pe_section_alignment == (bfd_vma) -1)
5177 pe_section_alignment = PE_DEF_SECTION_ALIGNMENT;
5178 break;
5180 if (s != subsystem)
5181 free ((char *) subsystem);
5184 /* Convert EFI target to PEI target. */
5186 static int
5187 convert_efi_target (char **targ)
5189 size_t len;
5190 char *pei;
5191 char *efi = *targ + 4;
5192 int subsys = -1;
5194 if (startswith (efi, "app-"))
5195 subsys = IMAGE_SUBSYSTEM_EFI_APPLICATION;
5196 else if (startswith (efi, "bsdrv-"))
5198 subsys = IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER;
5199 efi += 2;
5201 else if (startswith (efi, "rtdrv-"))
5203 subsys = IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER;
5204 efi += 2;
5206 else
5207 return subsys;
5209 len = strlen (efi);
5210 pei = xmalloc (len + sizeof ("-little"));
5211 memcpy (pei, efi, len + 1);
5212 pei[0] = 'p';
5213 pei[1] = 'e';
5214 pei[2] = 'i';
5216 if (strcmp (efi + 4, "ia32") == 0)
5218 /* Change ia32 to i386. */
5219 pei[5]= '3';
5220 pei[6]= '8';
5221 pei[7]= '6';
5223 else if (strcmp (efi + 4, "x86_64") == 0)
5225 /* Change x86_64 to x86-64. */
5226 pei[7] = '-';
5228 else if (strcmp (efi + 4, "aarch64") == 0)
5230 /* Change aarch64 to aarch64-little. */
5231 memcpy (pei + 4 + sizeof ("aarch64") - 1, "-little", sizeof ("-little"));
5233 else if (strcmp (efi + 4, "riscv64") == 0)
5235 /* Change riscv64 to riscv64-little. */
5236 memcpy (pei + 4 + sizeof ("riscv64") - 1, "-little", sizeof ("-little"));
5238 *targ = pei;
5239 return subsys;
5242 /* Allocate and return a pointer to a struct section_add, initializing the
5243 structure using ARG, a string in the format "sectionname=filename".
5244 The returned structure will have its next pointer set to NEXT. The
5245 OPTION field is the name of the command line option currently being
5246 parsed, and is only used if an error needs to be reported. */
5248 static struct section_add *
5249 init_section_add (const char *arg,
5250 struct section_add *next,
5251 const char *option)
5253 struct section_add *pa;
5254 const char *s;
5256 s = strchr (arg, '=');
5257 if (s == NULL)
5258 fatal (_("bad format for %s"), option);
5260 pa = (struct section_add *) xmalloc (sizeof (struct section_add));
5261 pa->name = xstrndup (arg, s - arg);
5262 pa->filename = s + 1;
5263 pa->next = next;
5264 pa->contents = NULL;
5265 pa->size = 0;
5267 return pa;
5270 /* Load the file specified in PA, allocating memory to hold the file
5271 contents, and store a pointer to the allocated memory in the contents
5272 field of PA. The size field of PA is also updated. All errors call
5273 FATAL. */
5275 static void
5276 section_add_load_file (struct section_add *pa)
5278 size_t off, alloc;
5279 FILE *f;
5281 /* We don't use get_file_size so that we can do
5282 --add-section .note.GNU_stack=/dev/null
5283 get_file_size doesn't work on /dev/null. */
5285 f = fopen (pa->filename, FOPEN_RB);
5286 if (f == NULL)
5287 fatal (_("cannot open: %s: %s"),
5288 pa->filename, strerror (errno));
5290 off = 0;
5291 alloc = 4096;
5292 pa->contents = (bfd_byte *) xmalloc (alloc);
5293 while (!feof (f))
5295 off_t got;
5297 if (off == alloc)
5299 alloc <<= 1;
5300 pa->contents = (bfd_byte *) xrealloc (pa->contents, alloc);
5303 got = fread (pa->contents + off, 1, alloc - off, f);
5304 if (ferror (f))
5305 fatal (_("%s: fread failed"), pa->filename);
5307 off += got;
5310 pa->size = off;
5312 fclose (f);
5315 static int
5316 copy_main (int argc, char *argv[])
5318 char *input_filename = NULL;
5319 char *output_filename = NULL;
5320 char *tmpname;
5321 char *input_target = NULL;
5322 char *output_target = NULL;
5323 bool show_version = false;
5324 bool change_warn = true;
5325 bool formats_info = false;
5326 bool use_globalize = false;
5327 bool use_keep_global = false;
5328 int c;
5329 int tmpfd = -1;
5330 int copyfd;
5331 struct stat statbuf;
5332 const bfd_arch_info_type *input_arch = NULL;
5334 while ((c = getopt_long (argc, argv, "b:B:i:I:j:K:MN:s:O:d:F:L:G:R:SpgxXHhVvW:wDU",
5335 copy_options, (int *) 0)) != EOF)
5337 switch (c)
5339 case 'b':
5340 copy_byte = atoi (optarg);
5341 if (copy_byte < 0)
5342 fatal (_("byte number must be non-negative"));
5343 break;
5345 case 'B':
5346 input_arch = bfd_scan_arch (optarg);
5347 if (input_arch == NULL)
5348 fatal (_("architecture %s unknown"), optarg);
5349 break;
5351 case 'i':
5352 if (optarg)
5354 interleave = atoi (optarg);
5355 if (interleave < 1)
5356 fatal (_("interleave must be positive"));
5358 else
5359 interleave = 4;
5360 break;
5362 case OPTION_INTERLEAVE_WIDTH:
5363 copy_width = atoi (optarg);
5364 if (copy_width < 1)
5365 fatal(_("interleave width must be positive"));
5366 break;
5368 case 'I':
5369 case 's': /* "source" - 'I' is preferred */
5370 input_target = optarg;
5371 break;
5373 case 'O':
5374 case 'd': /* "destination" - 'O' is preferred */
5375 output_target = optarg;
5376 break;
5378 case 'F':
5379 input_target = output_target = optarg;
5380 break;
5382 case 'j':
5383 find_section_list (optarg, true, SECTION_CONTEXT_COPY);
5384 sections_copied = true;
5385 break;
5387 case 'R':
5388 handle_remove_section_option (optarg);
5389 break;
5391 case OPTION_KEEP_SECTION:
5392 find_section_list (optarg, true, SECTION_CONTEXT_KEEP);
5393 break;
5395 case OPTION_REMOVE_RELOCS:
5396 handle_remove_relocations_option (optarg);
5397 break;
5399 case OPTION_STRIP_SECTION_HEADERS:
5400 strip_section_headers = true;
5401 break;
5403 case 'S':
5404 strip_symbols = STRIP_ALL;
5405 break;
5407 case 'g':
5408 strip_symbols = STRIP_DEBUG;
5409 break;
5411 case OPTION_STRIP_DWO:
5412 strip_symbols = STRIP_DWO;
5413 break;
5415 case OPTION_STRIP_UNNEEDED:
5416 strip_symbols = STRIP_UNNEEDED;
5417 break;
5419 case OPTION_ONLY_KEEP_DEBUG:
5420 strip_symbols = STRIP_NONDEBUG;
5421 break;
5423 case OPTION_KEEP_FILE_SYMBOLS:
5424 keep_file_symbols = 1;
5425 break;
5427 case OPTION_ADD_GNU_DEBUGLINK:
5428 long_section_names = ENABLE ;
5429 gnu_debuglink_filename = optarg;
5430 break;
5432 case 'K':
5433 add_specific_symbol (optarg, keep_specific_htab);
5434 break;
5436 case 'M':
5437 merge_notes = true;
5438 break;
5439 case OPTION_NO_MERGE_NOTES:
5440 merge_notes = false;
5441 break;
5443 case 'N':
5444 add_specific_symbol (optarg, strip_specific_htab);
5445 break;
5447 case OPTION_STRIP_UNNEEDED_SYMBOL:
5448 add_specific_symbol (optarg, strip_unneeded_htab);
5449 break;
5451 case 'L':
5452 add_specific_symbol (optarg, localize_specific_htab);
5453 break;
5455 case OPTION_GLOBALIZE_SYMBOL:
5456 use_globalize = true;
5457 add_specific_symbol (optarg, globalize_specific_htab);
5458 break;
5460 case 'G':
5461 use_keep_global = true;
5462 add_specific_symbol (optarg, keepglobal_specific_htab);
5463 break;
5465 case 'W':
5466 add_specific_symbol (optarg, weaken_specific_htab);
5467 break;
5469 case 'p':
5470 preserve_dates = true;
5471 break;
5473 case 'D':
5474 deterministic = true;
5475 break;
5477 case 'U':
5478 deterministic = false;
5479 break;
5481 case 'w':
5482 wildcard = true;
5483 break;
5485 case 'x':
5486 discard_locals = LOCALS_ALL;
5487 break;
5489 case 'X':
5490 discard_locals = LOCALS_START_L;
5491 break;
5493 case 'v':
5494 verbose = true;
5495 break;
5497 case 'V':
5498 show_version = true;
5499 break;
5501 case OPTION_FORMATS_INFO:
5502 formats_info = true;
5503 break;
5505 case OPTION_WEAKEN:
5506 weaken = true;
5507 break;
5509 case OPTION_ADD_SECTION:
5510 add_sections = init_section_add (optarg, add_sections,
5511 "--add-section");
5512 section_add_load_file (add_sections);
5513 break;
5515 case OPTION_UPDATE_SECTION:
5516 update_sections = init_section_add (optarg, update_sections,
5517 "--update-section");
5518 section_add_load_file (update_sections);
5519 break;
5521 case OPTION_DUMP_SECTION:
5522 dump_sections = init_section_add (optarg, dump_sections,
5523 "--dump-section");
5524 break;
5526 case OPTION_ADD_SYMBOL:
5528 char *s, *t;
5529 struct addsym_node *newsym = xmalloc (sizeof *newsym);
5531 newsym->next = NULL;
5532 s = strchr (optarg, '=');
5533 if (s == NULL)
5534 fatal (_("bad format for %s"), "--add-symbol");
5535 t = strchr (s + 1, ':');
5537 newsym->symdef = xstrndup (optarg, s - optarg);
5538 if (t)
5540 newsym->section = xstrndup (s + 1, t - (s + 1));
5541 newsym->symval = strtol (t + 1, NULL, 0);
5543 else
5545 newsym->section = NULL;
5546 newsym->symval = strtol (s + 1, NULL, 0);
5547 t = s;
5550 t = strchr (t + 1, ',');
5551 newsym->othersym = NULL;
5552 if (t)
5553 newsym->flags = parse_symflags (t+1, &newsym->othersym);
5554 else
5555 newsym->flags = BSF_GLOBAL;
5557 /* Keep 'othersym' symbols at the front of the list. */
5558 if (newsym->othersym)
5560 newsym->next = add_sym_list;
5561 if (!add_sym_list)
5562 add_sym_tail = &newsym->next;
5563 add_sym_list = newsym;
5565 else
5567 *add_sym_tail = newsym;
5568 add_sym_tail = &newsym->next;
5570 add_symbols++;
5572 break;
5574 case OPTION_CHANGE_START:
5575 change_start = parse_vma (optarg, "--change-start");
5576 break;
5578 case OPTION_CHANGE_SECTION_ADDRESS:
5579 case OPTION_CHANGE_SECTION_LMA:
5580 case OPTION_CHANGE_SECTION_VMA:
5582 struct section_list * p;
5583 unsigned int context = 0;
5584 const char *s;
5585 int len;
5586 char *name;
5587 char *option = NULL;
5588 bfd_vma val;
5590 switch (c)
5592 case OPTION_CHANGE_SECTION_ADDRESS:
5593 option = "--change-section-address";
5594 context = SECTION_CONTEXT_ALTER_LMA | SECTION_CONTEXT_ALTER_VMA;
5595 break;
5596 case OPTION_CHANGE_SECTION_LMA:
5597 option = "--change-section-lma";
5598 context = SECTION_CONTEXT_ALTER_LMA;
5599 break;
5600 case OPTION_CHANGE_SECTION_VMA:
5601 option = "--change-section-vma";
5602 context = SECTION_CONTEXT_ALTER_VMA;
5603 break;
5606 s = strchr (optarg, '=');
5607 if (s == NULL)
5609 s = strchr (optarg, '+');
5610 if (s == NULL)
5612 s = strchr (optarg, '-');
5613 if (s == NULL)
5614 fatal (_("bad format for %s"), option);
5617 else
5619 /* Correct the context. */
5620 switch (c)
5622 case OPTION_CHANGE_SECTION_ADDRESS:
5623 context = SECTION_CONTEXT_SET_LMA | SECTION_CONTEXT_SET_VMA;
5624 break;
5625 case OPTION_CHANGE_SECTION_LMA:
5626 context = SECTION_CONTEXT_SET_LMA;
5627 break;
5628 case OPTION_CHANGE_SECTION_VMA:
5629 context = SECTION_CONTEXT_SET_VMA;
5630 break;
5634 len = s - optarg;
5635 name = (char *) xmalloc (len + 1);
5636 strncpy (name, optarg, len);
5637 name[len] = '\0';
5639 p = find_section_list (name, true, context);
5641 val = parse_vma (s + 1, option);
5642 if (*s == '-')
5643 val = - val;
5645 switch (c)
5647 case OPTION_CHANGE_SECTION_ADDRESS:
5648 p->vma_val = val;
5649 /* Fall through. */
5651 case OPTION_CHANGE_SECTION_LMA:
5652 p->lma_val = val;
5653 break;
5655 case OPTION_CHANGE_SECTION_VMA:
5656 p->vma_val = val;
5657 break;
5660 break;
5662 case OPTION_CHANGE_ADDRESSES:
5663 change_section_address = parse_vma (optarg, "--change-addresses");
5664 change_start = change_section_address;
5665 break;
5667 case OPTION_CHANGE_WARNINGS:
5668 change_warn = true;
5669 break;
5671 case OPTION_CHANGE_LEADING_CHAR:
5672 change_leading_char = true;
5673 break;
5675 case OPTION_COMPRESS_DEBUG_SECTIONS:
5676 if (optarg)
5678 if (strcasecmp (optarg, "none") == 0)
5679 do_debug_sections = decompress;
5680 else if (strcasecmp (optarg, "zlib") == 0)
5681 do_debug_sections = compress_zlib;
5682 else if (strcasecmp (optarg, "zlib-gnu") == 0)
5683 do_debug_sections = compress_gnu_zlib;
5684 else if (strcasecmp (optarg, "zlib-gabi") == 0)
5685 do_debug_sections = compress_gabi_zlib;
5686 else if (strcasecmp (optarg, "zstd") == 0)
5687 do_debug_sections = compress_zstd;
5688 else
5689 fatal (_("unrecognized --compress-debug-sections type `%s'"),
5690 optarg);
5692 else
5693 do_debug_sections = compress;
5694 break;
5696 case OPTION_DEBUGGING:
5697 convert_debugging = true;
5698 break;
5700 case OPTION_DECOMPRESS_DEBUG_SECTIONS:
5701 do_debug_sections = decompress;
5702 break;
5704 case OPTION_ELF_STT_COMMON:
5705 if (strcasecmp (optarg, "yes") == 0)
5706 do_elf_stt_common = elf_stt_common;
5707 else if (strcasecmp (optarg, "no") == 0)
5708 do_elf_stt_common = no_elf_stt_common;
5709 else
5710 fatal (_("unrecognized --elf-stt-common= option `%s'"),
5711 optarg);
5712 break;
5714 case OPTION_GAP_FILL:
5716 bfd_vma gap_fill_vma;
5718 gap_fill_vma = parse_vma (optarg, "--gap-fill");
5719 gap_fill = (bfd_byte) gap_fill_vma;
5720 if ((bfd_vma) gap_fill != gap_fill_vma)
5721 non_fatal (_("Warning: truncating gap-fill from 0x%" PRIx64
5722 " to 0x%x"),
5723 (uint64_t) gap_fill_vma, gap_fill);
5724 gap_fill_set = true;
5726 break;
5728 case OPTION_NO_CHANGE_WARNINGS:
5729 change_warn = false;
5730 break;
5732 case OPTION_PAD_TO:
5733 pad_to = parse_vma (optarg, "--pad-to");
5734 pad_to_set = true;
5735 break;
5737 case OPTION_REMOVE_LEADING_CHAR:
5738 remove_leading_char = true;
5739 break;
5741 case OPTION_REDEFINE_SYM:
5743 /* Insert this redefinition onto redefine_specific_htab. */
5745 int len;
5746 const char *s;
5747 const char *nextarg;
5748 char *source, *target;
5750 s = strchr (optarg, '=');
5751 if (s == NULL)
5752 fatal (_("bad format for %s"), "--redefine-sym");
5754 len = s - optarg;
5755 source = (char *) xmalloc (len + 1);
5756 strncpy (source, optarg, len);
5757 source[len] = '\0';
5759 nextarg = s + 1;
5760 len = strlen (nextarg);
5761 target = (char *) xmalloc (len + 1);
5762 strcpy (target, nextarg);
5764 add_redefine_and_check ("--redefine-sym", source, target);
5766 free (source);
5767 free (target);
5769 break;
5771 case OPTION_REDEFINE_SYMS:
5772 add_redefine_syms_file (optarg);
5773 break;
5775 case OPTION_SET_SECTION_FLAGS:
5777 struct section_list *p;
5778 const char *s;
5779 int len;
5780 char *name;
5782 s = strchr (optarg, '=');
5783 if (s == NULL)
5784 fatal (_("bad format for %s"), "--set-section-flags");
5786 len = s - optarg;
5787 name = (char *) xmalloc (len + 1);
5788 strncpy (name, optarg, len);
5789 name[len] = '\0';
5791 p = find_section_list (name, true, SECTION_CONTEXT_SET_FLAGS);
5793 p->flags = parse_flags (s + 1);
5795 break;
5797 case OPTION_SET_SECTION_ALIGNMENT:
5799 struct section_list *p;
5800 const char *s;
5801 int len;
5802 char *name;
5803 int palign, align;
5805 s = strchr (optarg, '=');
5806 if (s == NULL)
5807 fatal (_("bad format for --set-section-alignment: argument needed"));
5809 align = atoi (s + 1);
5810 if (align <= 0)
5811 fatal (_("bad format for --set-section-alignment: numeric argument needed"));
5813 /* Convert integer alignment into a power-of-two alignment. */
5814 palign = power_of_two (align);
5815 if (palign == -1)
5816 fatal (_("bad format for --set-section-alignment: alignment is not a power of two"));
5818 /* Add the alignment setting to the section list. */
5819 len = s - optarg;
5820 name = (char *) xmalloc (len + 1);
5821 strncpy (name, optarg, len);
5822 name[len] = '\0';
5824 p = find_section_list (name, true, SECTION_CONTEXT_SET_ALIGNMENT);
5825 if (p)
5826 p->alignment = palign;
5828 break;
5830 case OPTION_RENAME_SECTION:
5832 flagword flags;
5833 const char *eq, *fl;
5834 char *old_name;
5835 char *new_name;
5836 unsigned int len;
5838 eq = strchr (optarg, '=');
5839 if (eq == NULL)
5840 fatal (_("bad format for %s"), "--rename-section");
5842 len = eq - optarg;
5843 if (len == 0)
5844 fatal (_("bad format for %s"), "--rename-section");
5846 old_name = (char *) xmalloc (len + 1);
5847 strncpy (old_name, optarg, len);
5848 old_name[len] = 0;
5850 eq++;
5851 fl = strchr (eq, ',');
5852 if (fl)
5854 flags = parse_flags (fl + 1);
5855 len = fl - eq;
5857 else
5859 flags = -1;
5860 len = strlen (eq);
5863 if (len == 0)
5864 fatal (_("bad format for %s"), "--rename-section");
5866 new_name = (char *) xmalloc (len + 1);
5867 strncpy (new_name, eq, len);
5868 new_name[len] = 0;
5870 add_section_rename (old_name, new_name, flags);
5872 break;
5874 case OPTION_SET_START:
5875 set_start = parse_vma (optarg, "--set-start");
5876 set_start_set = true;
5877 break;
5879 case OPTION_SREC_LEN:
5880 _bfd_srec_len = parse_vma (optarg, "--srec-len");
5881 break;
5883 case OPTION_SREC_FORCES3:
5884 _bfd_srec_forceS3 = true;
5885 break;
5887 case OPTION_STRIP_SYMBOLS:
5888 add_specific_symbols (optarg, strip_specific_htab,
5889 &strip_specific_buffer);
5890 break;
5892 case OPTION_STRIP_UNNEEDED_SYMBOLS:
5893 add_specific_symbols (optarg, strip_unneeded_htab,
5894 &strip_unneeded_buffer);
5895 break;
5897 case OPTION_KEEP_SYMBOLS:
5898 add_specific_symbols (optarg, keep_specific_htab,
5899 &keep_specific_buffer);
5900 break;
5902 case OPTION_KEEP_SECTION_SYMBOLS:
5903 keep_section_symbols = true;
5904 break;
5906 case OPTION_LOCALIZE_HIDDEN:
5907 localize_hidden = true;
5908 break;
5910 case OPTION_LOCALIZE_SYMBOLS:
5911 add_specific_symbols (optarg, localize_specific_htab,
5912 &localize_specific_buffer);
5913 break;
5915 case OPTION_LONG_SECTION_NAMES:
5916 if (!strcmp ("enable", optarg))
5917 long_section_names = ENABLE;
5918 else if (!strcmp ("disable", optarg))
5919 long_section_names = DISABLE;
5920 else if (!strcmp ("keep", optarg))
5921 long_section_names = KEEP;
5922 else
5923 fatal (_("unknown long section names option '%s'"), optarg);
5924 break;
5926 case OPTION_GLOBALIZE_SYMBOLS:
5927 use_globalize = true;
5928 add_specific_symbols (optarg, globalize_specific_htab,
5929 &globalize_specific_buffer);
5930 break;
5932 case OPTION_KEEPGLOBAL_SYMBOLS:
5933 use_keep_global = true;
5934 add_specific_symbols (optarg, keepglobal_specific_htab,
5935 &keepglobal_specific_buffer);
5936 break;
5938 case OPTION_WEAKEN_SYMBOLS:
5939 add_specific_symbols (optarg, weaken_specific_htab,
5940 &weaken_specific_buffer);
5941 break;
5943 case OPTION_ALT_MACH_CODE:
5944 use_alt_mach_code = strtoul (optarg, NULL, 0);
5945 if (use_alt_mach_code == 0)
5946 fatal (_("unable to parse alternative machine code"));
5947 break;
5949 case OPTION_PREFIX_SYMBOLS:
5950 prefix_symbols_string = optarg;
5951 break;
5953 case OPTION_PREFIX_SECTIONS:
5954 prefix_sections_string = optarg;
5955 break;
5957 case OPTION_PREFIX_ALLOC_SECTIONS:
5958 prefix_alloc_sections_string = optarg;
5959 break;
5961 case OPTION_READONLY_TEXT:
5962 bfd_flags_to_set |= WP_TEXT;
5963 bfd_flags_to_clear &= ~WP_TEXT;
5964 break;
5966 case OPTION_WRITABLE_TEXT:
5967 bfd_flags_to_clear |= WP_TEXT;
5968 bfd_flags_to_set &= ~WP_TEXT;
5969 break;
5971 case OPTION_PURE:
5972 bfd_flags_to_set |= D_PAGED;
5973 bfd_flags_to_clear &= ~D_PAGED;
5974 break;
5976 case OPTION_IMPURE:
5977 bfd_flags_to_clear |= D_PAGED;
5978 bfd_flags_to_set &= ~D_PAGED;
5979 break;
5981 case OPTION_EXTRACT_DWO:
5982 strip_symbols = STRIP_NONDWO;
5983 break;
5985 case OPTION_EXTRACT_SYMBOL:
5986 extract_symbol = true;
5987 break;
5989 case OPTION_REVERSE_BYTES:
5991 int prev = reverse_bytes;
5993 reverse_bytes = atoi (optarg);
5994 if ((reverse_bytes <= 0) || ((reverse_bytes % 2) != 0))
5995 fatal (_("number of bytes to reverse must be positive and even"));
5997 if (prev && prev != reverse_bytes)
5998 non_fatal (_("Warning: ignoring previous --reverse-bytes value of %d"),
5999 prev);
6000 break;
6003 case OPTION_FILE_ALIGNMENT:
6004 pe_file_alignment = parse_vma (optarg, "--file-alignment");
6005 break;
6007 case OPTION_HEAP:
6009 char *end;
6010 pe_heap_reserve = strtoul (optarg, &end, 0);
6011 if (end == optarg
6012 || (*end != ',' && *end != '\0'))
6013 non_fatal (_("%s: invalid reserve value for --heap"),
6014 optarg);
6015 else if (*end != '\0')
6017 pe_heap_commit = strtoul (end + 1, &end, 0);
6018 if (*end != '\0')
6019 non_fatal (_("%s: invalid commit value for --heap"),
6020 optarg);
6023 break;
6025 case OPTION_IMAGE_BASE:
6026 pe_image_base = parse_vma (optarg, "--image-base");
6027 break;
6029 case OPTION_PE_SECTION_ALIGNMENT:
6030 pe_section_alignment = parse_vma (optarg,
6031 "--section-alignment");
6032 if (power_of_two (pe_section_alignment) == -1)
6034 non_fatal (_("--section-alignment argument is not a power of two: %s - ignoring"), optarg);
6035 pe_section_alignment = (bfd_vma) -1;
6037 break;
6039 case OPTION_SUBSYSTEM:
6040 set_pe_subsystem (optarg);
6041 break;
6043 case OPTION_STACK:
6045 char *end;
6046 pe_stack_reserve = strtoul (optarg, &end, 0);
6047 if (end == optarg
6048 || (*end != ',' && *end != '\0'))
6049 non_fatal (_("%s: invalid reserve value for --stack"),
6050 optarg);
6051 else if (*end != '\0')
6053 pe_stack_commit = strtoul (end + 1, &end, 0);
6054 if (*end != '\0')
6055 non_fatal (_("%s: invalid commit value for --stack"),
6056 optarg);
6059 break;
6061 case OPTION_VERILOG_DATA_WIDTH:
6062 VerilogDataWidth = parse_vma (optarg, "--verilog-data-width");
6063 switch (VerilogDataWidth)
6065 case 1:
6066 case 2:
6067 case 4:
6068 case 8:
6069 case 16: /* We do not support widths > 16 because the verilog
6070 data is handled internally in 16 byte wide packets. */
6071 break;
6072 default:
6073 fatal (_("error: verilog data width must be 1, 2, 4, 8 or 16"));
6075 break;
6077 case 0:
6078 /* We've been given a long option. */
6079 break;
6081 case 'H':
6082 case 'h':
6083 copy_usage (stdout, 0);
6085 default:
6086 copy_usage (stderr, 1);
6090 if (use_globalize && use_keep_global)
6091 fatal(_("--globalize-symbol(s) is incompatible with -G/--keep-global-symbol(s)"));
6093 if (formats_info)
6095 display_info ();
6096 return 0;
6099 if (show_version)
6100 print_version ("objcopy");
6102 if (interleave && copy_byte == -1)
6103 fatal (_("interleave start byte must be set with --byte"));
6105 if (copy_byte >= interleave)
6106 fatal (_("byte number must be less than interleave"));
6108 if (copy_width > interleave - copy_byte)
6109 fatal (_("interleave width must be less than or equal to interleave - byte`"));
6111 if (optind == argc || optind + 2 < argc)
6112 copy_usage (stderr, 1);
6114 input_filename = argv[optind];
6115 if (optind + 1 < argc)
6116 output_filename = argv[optind + 1];
6118 default_deterministic ();
6120 /* Default is to strip no symbols. */
6121 if (strip_symbols == STRIP_UNDEF && discard_locals == LOCALS_UNDEF)
6122 strip_symbols = STRIP_NONE;
6124 if (output_target == NULL)
6125 output_target = input_target;
6127 /* Convert input EFI target to PEI target. */
6128 if (input_target != NULL
6129 && startswith (input_target, "efi-"))
6131 if (convert_efi_target (&input_target) < 0)
6132 fatal (_("unknown input EFI target: %s"), input_target);
6135 /* Convert output EFI target to PEI target. */
6136 if (output_target != NULL
6137 && startswith (output_target, "efi-"))
6139 int subsys = convert_efi_target (&output_target);
6141 if (subsys < 0)
6142 fatal (_("unknown output EFI target: %s"), output_target);
6143 if (pe_subsystem == -1)
6144 pe_subsystem = subsys;
6145 if (pe_file_alignment == (bfd_vma) -1)
6146 pe_file_alignment = PE_DEF_FILE_ALIGNMENT;
6147 if (pe_section_alignment == (bfd_vma) -1)
6148 pe_section_alignment = PE_DEF_SECTION_ALIGNMENT;
6151 /* If there is no destination file, or the source and destination files
6152 are the same, then create a temp and copy the result into the input. */
6153 copyfd = -1;
6154 if (output_filename == NULL
6155 || filename_cmp (input_filename, output_filename) == 0)
6157 tmpname = make_tempname (input_filename, &tmpfd);
6158 if (tmpfd >= 0)
6159 copyfd = dup (tmpfd);
6161 else
6162 tmpname = output_filename;
6164 if (tmpname == NULL)
6166 fatal (_("warning: could not create temporary file whilst copying '%s', (error: %s)"),
6167 input_filename, strerror (errno));
6170 copy_file (input_filename, tmpname, tmpfd, &statbuf, input_target,
6171 output_target, input_arch);
6172 if (status == 0)
6174 const char *oname = output_filename ? output_filename : input_filename;
6175 status = smart_rename (tmpname, oname, copyfd,
6176 &statbuf, preserve_dates) != 0;
6178 else
6180 if (copyfd >= 0)
6181 close (copyfd);
6182 unlink_if_ordinary (tmpname);
6185 if (tmpname != output_filename)
6186 free (tmpname);
6188 if (change_warn)
6190 struct section_list *p;
6192 for (p = change_sections; p != NULL; p = p->next)
6194 if (! p->used)
6196 if (p->context & (SECTION_CONTEXT_SET_VMA | SECTION_CONTEXT_ALTER_VMA))
6197 /* xgettext:c-format */
6198 non_fatal (_("%s %s%c0x%" PRIx64 " never used"),
6199 "--change-section-vma",
6200 p->pattern,
6201 p->context & SECTION_CONTEXT_SET_VMA ? '=' : '+',
6202 (uint64_t) p->vma_val);
6204 if (p->context & (SECTION_CONTEXT_SET_LMA | SECTION_CONTEXT_ALTER_LMA))
6205 /* xgettext:c-format */
6206 non_fatal (_("%s %s%c0x%" PRIx64 " never used"),
6207 "--change-section-lma",
6208 p->pattern,
6209 p->context & SECTION_CONTEXT_SET_LMA ? '=' : '+',
6210 (uint64_t) p->lma_val);
6215 free (strip_specific_buffer);
6216 free (strip_unneeded_buffer);
6217 free (keep_specific_buffer);
6218 free (localize_specific_buffer);
6219 free (globalize_specific_buffer);
6220 free (keepglobal_specific_buffer);
6221 free (weaken_specific_buffer);
6223 return 0;
6227 main (int argc, char *argv[])
6229 #ifdef HAVE_LC_MESSAGES
6230 setlocale (LC_MESSAGES, "");
6231 #endif
6232 setlocale (LC_CTYPE, "");
6233 bindtextdomain (PACKAGE, LOCALEDIR);
6234 textdomain (PACKAGE);
6236 program_name = argv[0];
6237 xmalloc_set_program_name (program_name);
6239 expandargv (&argc, &argv);
6241 strip_symbols = STRIP_UNDEF;
6242 discard_locals = LOCALS_UNDEF;
6244 if (bfd_init () != BFD_INIT_MAGIC)
6245 fatal (_("fatal error: libbfd ABI mismatch"));
6246 set_default_bfd_target ();
6248 if (is_strip < 0)
6250 int i = strlen (program_name);
6251 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
6252 /* Drop the .exe suffix, if any. */
6253 if (i > 4 && FILENAME_CMP (program_name + i - 4, ".exe") == 0)
6255 i -= 4;
6256 program_name[i] = '\0';
6258 #endif
6259 is_strip = (i >= 5 && FILENAME_CMP (program_name + i - 5, "strip") == 0);
6262 create_symbol_htabs ();
6263 xatexit (delete_symbol_htabs);
6265 if (argv != NULL)
6266 bfd_set_error_program_name (argv[0]);
6268 if (is_strip)
6269 strip_main (argc, argv);
6270 else
6271 copy_main (argc, argv);
6273 xexit (status);
6274 return status;