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1 /* objdump.c -- dump information about an object file.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
4 Free Software Foundation, Inc.
5
6 This file is part of GNU Binutils.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3, or (at your option)
11 any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
22
23
24 /* Objdump overview.
25
26 Objdump displays information about one or more object files, either on
27 their own, or inside libraries. It is commonly used as a disassembler,
28 but it can also display information about file headers, symbol tables,
29 relocations, debugging directives and more.
30
31 The flow of execution is as follows:
32
33 1. Command line arguments are checked for control switches and the
34 information to be displayed is selected.
35
36 2. Any remaining arguments are assumed to be object files, and they are
37 processed in order by display_bfd(). If the file is an archive each
38 of its elements is processed in turn.
39
40 3. The file's target architecture and binary file format are determined
41 by bfd_check_format(). If they are recognised, then dump_bfd() is
42 called.
43
44 4. dump_bfd() in turn calls separate functions to display the requested
45 item(s) of information(s). For example disassemble_data() is called if
46 a disassembly has been requested.
47
48 When disassembling the code loops through blocks of instructions bounded
49 by symbols, calling disassemble_bytes() on each block. The actual
50 disassembling is done by the libopcodes library, via a function pointer
51 supplied by the disassembler() function. */
52
53 #include "sysdep.h"
54 #include "bfd.h"
55 #include "elf-bfd.h"
56 #include "progress.h"
57 #include "bucomm.h"
58 #include "dwarf.h"
59 #include "getopt.h"
60 #include "safe-ctype.h"
61 #include "dis-asm.h"
62 #include "libiberty.h"
63 #include "demangle.h"
64 #include "filenames.h"
65 #include "debug.h"
66 #include "budbg.h"
67
68 #ifdef HAVE_MMAP
69 #include <sys/mman.h>
70 #endif
71
72 #include <sys/stat.h>
73
74 /* Internal headers for the ELF .stab-dump code - sorry. */
75 #define BYTES_IN_WORD 32
76 #include "aout/aout64.h"
77
78 /* Exit status. */
79 static int exit_status = 0;
80
81 static char *default_target = NULL; /* Default at runtime. */
82
83 /* The following variables are set based on arguments passed on the
84 command line. */
85 static int show_version = 0; /* Show the version number. */
86 static int dump_section_contents; /* -s */
87 static int dump_section_headers; /* -h */
88 static bfd_boolean dump_file_header; /* -f */
89 static int dump_symtab; /* -t */
90 static int dump_dynamic_symtab; /* -T */
91 static int dump_reloc_info; /* -r */
92 static int dump_dynamic_reloc_info; /* -R */
93 static int dump_ar_hdrs; /* -a */
94 static int dump_private_headers; /* -p */
95 static int prefix_addresses; /* --prefix-addresses */
96 static int with_line_numbers; /* -l */
97 static bfd_boolean with_source_code; /* -S */
98 static int show_raw_insn; /* --show-raw-insn */
99 static int dump_dwarf_section_info; /* --dwarf */
100 static int dump_stab_section_info; /* --stabs */
101 static int do_demangle; /* -C, --demangle */
102 static bfd_boolean disassemble; /* -d */
103 static bfd_boolean disassemble_all; /* -D */
104 static int disassemble_zeroes; /* --disassemble-zeroes */
105 static bfd_boolean formats_info; /* -i */
106 static int wide_output; /* -w */
107 static bfd_vma start_address = (bfd_vma) -1; /* --start-address */
108 static bfd_vma stop_address = (bfd_vma) -1; /* --stop-address */
109 static int dump_debugging; /* --debugging */
110 static int dump_debugging_tags; /* --debugging-tags */
111 static int dump_special_syms = 0; /* --special-syms */
112 static bfd_vma adjust_section_vma = 0; /* --adjust-vma */
113 static int file_start_context = 0; /* --file-start-context */
114 static bfd_boolean display_file_offsets;/* -F */
115 static const char *prefix; /* --prefix */
116 static int prefix_strip; /* --prefix-strip */
117 static size_t prefix_length;
118
119 /* Pointer to an array of section names provided by
120 one or more "-j secname" command line options. */
121 static char **only;
122 /* The total number of slots in the only[] array. */
123 static size_t only_size = 0;
124 /* The number of occupied slots in the only[] array. */
125 static size_t only_used = 0;
126
127 /* Variables for handling include file path table. */
128 static const char **include_paths;
129 static int include_path_count;
130
131 /* Extra info to pass to the section disassembler and address printing
132 function. */
133 struct objdump_disasm_info
134 {
135 bfd * abfd;
136 asection * sec;
137 bfd_boolean require_sec;
138 arelent ** dynrelbuf;
139 long dynrelcount;
140 disassembler_ftype disassemble_fn;
141 arelent * reloc;
142 };
143
144 /* Architecture to disassemble for, or default if NULL. */
145 static char *machine = NULL;
146
147 /* Target specific options to the disassembler. */
148 static char *disassembler_options = NULL;
149
150 /* Endianness to disassemble for, or default if BFD_ENDIAN_UNKNOWN. */
151 static enum bfd_endian endian = BFD_ENDIAN_UNKNOWN;
152
153 /* The symbol table. */
154 static asymbol **syms;
155
156 /* Number of symbols in `syms'. */
157 static long symcount = 0;
158
159 /* The sorted symbol table. */
160 static asymbol **sorted_syms;
161
162 /* Number of symbols in `sorted_syms'. */
163 static long sorted_symcount = 0;
164
165 /* The dynamic symbol table. */
166 static asymbol **dynsyms;
167
168 /* The synthetic symbol table. */
169 static asymbol *synthsyms;
170 static long synthcount = 0;
171
172 /* Number of symbols in `dynsyms'. */
173 static long dynsymcount = 0;
174
175 static bfd_byte *stabs;
176 static bfd_size_type stab_size;
177
178 static char *strtab;
179 static bfd_size_type stabstr_size;
180
181 static bfd_boolean is_relocatable = FALSE;
182 \f
183 static void
184 usage (FILE *stream, int status)
185 {
186 fprintf (stream, _("Usage: %s <option(s)> <file(s)>\n"), program_name);
187 fprintf (stream, _(" Display information from object <file(s)>.\n"));
188 fprintf (stream, _(" At least one of the following switches must be given:\n"));
189 fprintf (stream, _("\
190 -a, --archive-headers Display archive header information\n\
191 -f, --file-headers Display the contents of the overall file header\n\
192 -p, --private-headers Display object format specific file header contents\n\
193 -h, --[section-]headers Display the contents of the section headers\n\
194 -x, --all-headers Display the contents of all headers\n\
195 -d, --disassemble Display assembler contents of executable sections\n\
196 -D, --disassemble-all Display assembler contents of all sections\n\
197 -S, --source Intermix source code with disassembly\n\
198 -s, --full-contents Display the full contents of all sections requested\n\
199 -g, --debugging Display debug information in object file\n\
200 -e, --debugging-tags Display debug information using ctags style\n\
201 -G, --stabs Display (in raw form) any STABS info in the file\n\
202 -W[lLiaprmfFsoR] or\n\
203 --dwarf[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=str,=loc,=Ranges]\n\
204 Display DWARF info in the file\n\
205 -t, --syms Display the contents of the symbol table(s)\n\
206 -T, --dynamic-syms Display the contents of the dynamic symbol table\n\
207 -r, --reloc Display the relocation entries in the file\n\
208 -R, --dynamic-reloc Display the dynamic relocation entries in the file\n\
209 @<file> Read options from <file>\n\
210 -v, --version Display this program's version number\n\
211 -i, --info List object formats and architectures supported\n\
212 -H, --help Display this information\n\
213 "));
214 if (status != 2)
215 {
216 fprintf (stream, _("\n The following switches are optional:\n"));
217 fprintf (stream, _("\
218 -b, --target=BFDNAME Specify the target object format as BFDNAME\n\
219 -m, --architecture=MACHINE Specify the target architecture as MACHINE\n\
220 -j, --section=NAME Only display information for section NAME\n\
221 -M, --disassembler-options=OPT Pass text OPT on to the disassembler\n\
222 -EB --endian=big Assume big endian format when disassembling\n\
223 -EL --endian=little Assume little endian format when disassembling\n\
224 --file-start-context Include context from start of file (with -S)\n\
225 -I, --include=DIR Add DIR to search list for source files\n\
226 -l, --line-numbers Include line numbers and filenames in output\n\
227 -F, --file-offsets Include file offsets when displaying information\n\
228 -C, --demangle[=STYLE] Decode mangled/processed symbol names\n\
229 The STYLE, if specified, can be `auto', `gnu',\n\
230 `lucid', `arm', `hp', `edg', `gnu-v3', `java'\n\
231 or `gnat'\n\
232 -w, --wide Format output for more than 80 columns\n\
233 -z, --disassemble-zeroes Do not skip blocks of zeroes when disassembling\n\
234 --start-address=ADDR Only process data whose address is >= ADDR\n\
235 --stop-address=ADDR Only process data whose address is <= ADDR\n\
236 --prefix-addresses Print complete address alongside disassembly\n\
237 --[no-]show-raw-insn Display hex alongside symbolic disassembly\n\
238 --adjust-vma=OFFSET Add OFFSET to all displayed section addresses\n\
239 --special-syms Include special symbols in symbol dumps\n\
240 --prefix=PREFIX Add PREFIX to absolute paths for -S\n\
241 --prefix-strip=LEVEL Strip initial directory names for -S\n\
242 \n"));
243 list_supported_targets (program_name, stream);
244 list_supported_architectures (program_name, stream);
245
246 disassembler_usage (stream);
247 }
248 if (REPORT_BUGS_TO[0] && status == 0)
249 fprintf (stream, _("Report bugs to %s.\n"), REPORT_BUGS_TO);
250 exit (status);
251 }
252
253 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
254 enum option_values
255 {
256 OPTION_ENDIAN=150,
257 OPTION_START_ADDRESS,
258 OPTION_STOP_ADDRESS,
259 OPTION_DWARF,
260 OPTION_PREFIX,
261 OPTION_PREFIX_STRIP,
262 OPTION_ADJUST_VMA
263 };
264
265 static struct option long_options[]=
266 {
267 {"adjust-vma", required_argument, NULL, OPTION_ADJUST_VMA},
268 {"all-headers", no_argument, NULL, 'x'},
269 {"private-headers", no_argument, NULL, 'p'},
270 {"architecture", required_argument, NULL, 'm'},
271 {"archive-headers", no_argument, NULL, 'a'},
272 {"debugging", no_argument, NULL, 'g'},
273 {"debugging-tags", no_argument, NULL, 'e'},
274 {"demangle", optional_argument, NULL, 'C'},
275 {"disassemble", no_argument, NULL, 'd'},
276 {"disassemble-all", no_argument, NULL, 'D'},
277 {"disassembler-options", required_argument, NULL, 'M'},
278 {"disassemble-zeroes", no_argument, NULL, 'z'},
279 {"dynamic-reloc", no_argument, NULL, 'R'},
280 {"dynamic-syms", no_argument, NULL, 'T'},
281 {"endian", required_argument, NULL, OPTION_ENDIAN},
282 {"file-headers", no_argument, NULL, 'f'},
283 {"file-offsets", no_argument, NULL, 'F'},
284 {"file-start-context", no_argument, &file_start_context, 1},
285 {"full-contents", no_argument, NULL, 's'},
286 {"headers", no_argument, NULL, 'h'},
287 {"help", no_argument, NULL, 'H'},
288 {"info", no_argument, NULL, 'i'},
289 {"line-numbers", no_argument, NULL, 'l'},
290 {"no-show-raw-insn", no_argument, &show_raw_insn, -1},
291 {"prefix-addresses", no_argument, &prefix_addresses, 1},
292 {"reloc", no_argument, NULL, 'r'},
293 {"section", required_argument, NULL, 'j'},
294 {"section-headers", no_argument, NULL, 'h'},
295 {"show-raw-insn", no_argument, &show_raw_insn, 1},
296 {"source", no_argument, NULL, 'S'},
297 {"special-syms", no_argument, &dump_special_syms, 1},
298 {"include", required_argument, NULL, 'I'},
299 {"dwarf", optional_argument, NULL, OPTION_DWARF},
300 {"stabs", no_argument, NULL, 'G'},
301 {"start-address", required_argument, NULL, OPTION_START_ADDRESS},
302 {"stop-address", required_argument, NULL, OPTION_STOP_ADDRESS},
303 {"syms", no_argument, NULL, 't'},
304 {"target", required_argument, NULL, 'b'},
305 {"version", no_argument, NULL, 'V'},
306 {"wide", no_argument, NULL, 'w'},
307 {"prefix", required_argument, NULL, OPTION_PREFIX},
308 {"prefix-strip", required_argument, NULL, OPTION_PREFIX_STRIP},
309 {0, no_argument, 0, 0}
310 };
311 \f
312 static void
313 nonfatal (const char *msg)
314 {
315 bfd_nonfatal (msg);
316 exit_status = 1;
317 }
318 \f
319 static void
320 dump_section_header (bfd *abfd, asection *section,
321 void *ignored ATTRIBUTE_UNUSED)
322 {
323 char *comma = "";
324 unsigned int opb = bfd_octets_per_byte (abfd);
325
326 /* Ignore linker created section. See elfNN_ia64_object_p in
327 bfd/elfxx-ia64.c. */
328 if (section->flags & SEC_LINKER_CREATED)
329 return;
330
331 printf ("%3d %-13s %08lx ", section->index,
332 bfd_get_section_name (abfd, section),
333 (unsigned long) bfd_section_size (abfd, section) / opb);
334 bfd_printf_vma (abfd, bfd_get_section_vma (abfd, section));
335 printf (" ");
336 bfd_printf_vma (abfd, section->lma);
337 printf (" %08lx 2**%u", (unsigned long) section->filepos,
338 bfd_get_section_alignment (abfd, section));
339 if (! wide_output)
340 printf ("\n ");
341 printf (" ");
342
343 #define PF(x, y) \
344 if (section->flags & x) { printf ("%s%s", comma, y); comma = ", "; }
345
346 PF (SEC_HAS_CONTENTS, "CONTENTS");
347 PF (SEC_ALLOC, "ALLOC");
348 PF (SEC_CONSTRUCTOR, "CONSTRUCTOR");
349 PF (SEC_LOAD, "LOAD");
350 PF (SEC_RELOC, "RELOC");
351 PF (SEC_READONLY, "READONLY");
352 PF (SEC_CODE, "CODE");
353 PF (SEC_DATA, "DATA");
354 PF (SEC_ROM, "ROM");
355 PF (SEC_DEBUGGING, "DEBUGGING");
356 PF (SEC_NEVER_LOAD, "NEVER_LOAD");
357 PF (SEC_EXCLUDE, "EXCLUDE");
358 PF (SEC_SORT_ENTRIES, "SORT_ENTRIES");
359 if (bfd_get_arch (abfd) == bfd_arch_tic54x)
360 {
361 PF (SEC_TIC54X_BLOCK, "BLOCK");
362 PF (SEC_TIC54X_CLINK, "CLINK");
363 }
364 PF (SEC_SMALL_DATA, "SMALL_DATA");
365 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
366 PF (SEC_COFF_SHARED, "SHARED");
367 PF (SEC_THREAD_LOCAL, "THREAD_LOCAL");
368 PF (SEC_GROUP, "GROUP");
369
370 if ((section->flags & SEC_LINK_ONCE) != 0)
371 {
372 const char *ls;
373 struct coff_comdat_info *comdat;
374
375 switch (section->flags & SEC_LINK_DUPLICATES)
376 {
377 default:
378 abort ();
379 case SEC_LINK_DUPLICATES_DISCARD:
380 ls = "LINK_ONCE_DISCARD";
381 break;
382 case SEC_LINK_DUPLICATES_ONE_ONLY:
383 ls = "LINK_ONCE_ONE_ONLY";
384 break;
385 case SEC_LINK_DUPLICATES_SAME_SIZE:
386 ls = "LINK_ONCE_SAME_SIZE";
387 break;
388 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
389 ls = "LINK_ONCE_SAME_CONTENTS";
390 break;
391 }
392 printf ("%s%s", comma, ls);
393
394 comdat = bfd_coff_get_comdat_section (abfd, section);
395 if (comdat != NULL)
396 printf (" (COMDAT %s %ld)", comdat->name, comdat->symbol);
397
398 comma = ", ";
399 }
400
401 printf ("\n");
402 #undef PF
403 }
404
405 static void
406 dump_headers (bfd *abfd)
407 {
408 printf (_("Sections:\n"));
409
410 #ifndef BFD64
411 printf (_("Idx Name Size VMA LMA File off Algn"));
412 #else
413 /* With BFD64, non-ELF returns -1 and wants always 64 bit addresses. */
414 if (bfd_get_arch_size (abfd) == 32)
415 printf (_("Idx Name Size VMA LMA File off Algn"));
416 else
417 printf (_("Idx Name Size VMA LMA File off Algn"));
418 #endif
419
420 if (wide_output)
421 printf (_(" Flags"));
422 if (abfd->flags & HAS_LOAD_PAGE)
423 printf (_(" Pg"));
424 printf ("\n");
425
426 bfd_map_over_sections (abfd, dump_section_header, NULL);
427 }
428 \f
429 static asymbol **
430 slurp_symtab (bfd *abfd)
431 {
432 asymbol **sy = NULL;
433 long storage;
434
435 if (!(bfd_get_file_flags (abfd) & HAS_SYMS))
436 {
437 symcount = 0;
438 return NULL;
439 }
440
441 storage = bfd_get_symtab_upper_bound (abfd);
442 if (storage < 0)
443 bfd_fatal (bfd_get_filename (abfd));
444 if (storage)
445 sy = xmalloc (storage);
446
447 symcount = bfd_canonicalize_symtab (abfd, sy);
448 if (symcount < 0)
449 bfd_fatal (bfd_get_filename (abfd));
450 return sy;
451 }
452
453 /* Read in the dynamic symbols. */
454
455 static asymbol **
456 slurp_dynamic_symtab (bfd *abfd)
457 {
458 asymbol **sy = NULL;
459 long storage;
460
461 storage = bfd_get_dynamic_symtab_upper_bound (abfd);
462 if (storage < 0)
463 {
464 if (!(bfd_get_file_flags (abfd) & DYNAMIC))
465 {
466 non_fatal (_("%s: not a dynamic object"), bfd_get_filename (abfd));
467 dynsymcount = 0;
468 return NULL;
469 }
470
471 bfd_fatal (bfd_get_filename (abfd));
472 }
473 if (storage)
474 sy = xmalloc (storage);
475
476 dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, sy);
477 if (dynsymcount < 0)
478 bfd_fatal (bfd_get_filename (abfd));
479 return sy;
480 }
481
482 /* Filter out (in place) symbols that are useless for disassembly.
483 COUNT is the number of elements in SYMBOLS.
484 Return the number of useful symbols. */
485
486 static long
487 remove_useless_symbols (asymbol **symbols, long count)
488 {
489 asymbol **in_ptr = symbols, **out_ptr = symbols;
490
491 while (--count >= 0)
492 {
493 asymbol *sym = *in_ptr++;
494
495 if (sym->name == NULL || sym->name[0] == '\0')
496 continue;
497 if (sym->flags & (BSF_DEBUGGING | BSF_SECTION_SYM))
498 continue;
499 if (bfd_is_und_section (sym->section)
500 || bfd_is_com_section (sym->section))
501 continue;
502
503 *out_ptr++ = sym;
504 }
505 return out_ptr - symbols;
506 }
507
508 /* Sort symbols into value order. */
509
510 static int
511 compare_symbols (const void *ap, const void *bp)
512 {
513 const asymbol *a = * (const asymbol **) ap;
514 const asymbol *b = * (const asymbol **) bp;
515 const char *an;
516 const char *bn;
517 size_t anl;
518 size_t bnl;
519 bfd_boolean af;
520 bfd_boolean bf;
521 flagword aflags;
522 flagword bflags;
523
524 if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
525 return 1;
526 else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
527 return -1;
528
529 if (a->section > b->section)
530 return 1;
531 else if (a->section < b->section)
532 return -1;
533
534 an = bfd_asymbol_name (a);
535 bn = bfd_asymbol_name (b);
536 anl = strlen (an);
537 bnl = strlen (bn);
538
539 /* The symbols gnu_compiled and gcc2_compiled convey no real
540 information, so put them after other symbols with the same value. */
541 af = (strstr (an, "gnu_compiled") != NULL
542 || strstr (an, "gcc2_compiled") != NULL);
543 bf = (strstr (bn, "gnu_compiled") != NULL
544 || strstr (bn, "gcc2_compiled") != NULL);
545
546 if (af && ! bf)
547 return 1;
548 if (! af && bf)
549 return -1;
550
551 /* We use a heuristic for the file name, to try to sort it after
552 more useful symbols. It may not work on non Unix systems, but it
553 doesn't really matter; the only difference is precisely which
554 symbol names get printed. */
555
556 #define file_symbol(s, sn, snl) \
557 (((s)->flags & BSF_FILE) != 0 \
558 || ((sn)[(snl) - 2] == '.' \
559 && ((sn)[(snl) - 1] == 'o' \
560 || (sn)[(snl) - 1] == 'a')))
561
562 af = file_symbol (a, an, anl);
563 bf = file_symbol (b, bn, bnl);
564
565 if (af && ! bf)
566 return 1;
567 if (! af && bf)
568 return -1;
569
570 /* Try to sort global symbols before local symbols before function
571 symbols before debugging symbols. */
572
573 aflags = a->flags;
574 bflags = b->flags;
575
576 if ((aflags & BSF_DEBUGGING) != (bflags & BSF_DEBUGGING))
577 {
578 if ((aflags & BSF_DEBUGGING) != 0)
579 return 1;
580 else
581 return -1;
582 }
583 if ((aflags & BSF_FUNCTION) != (bflags & BSF_FUNCTION))
584 {
585 if ((aflags & BSF_FUNCTION) != 0)
586 return -1;
587 else
588 return 1;
589 }
590 if ((aflags & BSF_LOCAL) != (bflags & BSF_LOCAL))
591 {
592 if ((aflags & BSF_LOCAL) != 0)
593 return 1;
594 else
595 return -1;
596 }
597 if ((aflags & BSF_GLOBAL) != (bflags & BSF_GLOBAL))
598 {
599 if ((aflags & BSF_GLOBAL) != 0)
600 return -1;
601 else
602 return 1;
603 }
604
605 /* Symbols that start with '.' might be section names, so sort them
606 after symbols that don't start with '.'. */
607 if (an[0] == '.' && bn[0] != '.')
608 return 1;
609 if (an[0] != '.' && bn[0] == '.')
610 return -1;
611
612 /* Finally, if we can't distinguish them in any other way, try to
613 get consistent results by sorting the symbols by name. */
614 return strcmp (an, bn);
615 }
616
617 /* Sort relocs into address order. */
618
619 static int
620 compare_relocs (const void *ap, const void *bp)
621 {
622 const arelent *a = * (const arelent **) ap;
623 const arelent *b = * (const arelent **) bp;
624
625 if (a->address > b->address)
626 return 1;
627 else if (a->address < b->address)
628 return -1;
629
630 /* So that associated relocations tied to the same address show up
631 in the correct order, we don't do any further sorting. */
632 if (a > b)
633 return 1;
634 else if (a < b)
635 return -1;
636 else
637 return 0;
638 }
639
640 /* Print an address (VMA) to the output stream in INFO.
641 If SKIP_ZEROES is TRUE, omit leading zeroes. */
642
643 static void
644 objdump_print_value (bfd_vma vma, struct disassemble_info *info,
645 bfd_boolean skip_zeroes)
646 {
647 char buf[30];
648 char *p;
649 struct objdump_disasm_info *aux;
650
651 aux = (struct objdump_disasm_info *) info->application_data;
652 bfd_sprintf_vma (aux->abfd, buf, vma);
653 if (! skip_zeroes)
654 p = buf;
655 else
656 {
657 for (p = buf; *p == '0'; ++p)
658 ;
659 if (*p == '\0')
660 --p;
661 }
662 (*info->fprintf_func) (info->stream, "%s", p);
663 }
664
665 /* Print the name of a symbol. */
666
667 static void
668 objdump_print_symname (bfd *abfd, struct disassemble_info *info,
669 asymbol *sym)
670 {
671 char *alloc;
672 const char *name;
673
674 alloc = NULL;
675 name = bfd_asymbol_name (sym);
676 if (do_demangle && name[0] != '\0')
677 {
678 /* Demangle the name. */
679 alloc = bfd_demangle (abfd, name, DMGL_ANSI | DMGL_PARAMS);
680 if (alloc != NULL)
681 name = alloc;
682 }
683
684 if (info != NULL)
685 (*info->fprintf_func) (info->stream, "%s", name);
686 else
687 printf ("%s", name);
688
689 if (alloc != NULL)
690 free (alloc);
691 }
692
693 /* Locate a symbol given a bfd and a section (from INFO->application_data),
694 and a VMA. If INFO->application_data->require_sec is TRUE, then always
695 require the symbol to be in the section. Returns NULL if there is no
696 suitable symbol. If PLACE is not NULL, then *PLACE is set to the index
697 of the symbol in sorted_syms. */
698
699 static asymbol *
700 find_symbol_for_address (bfd_vma vma,
701 struct disassemble_info *info,
702 long *place)
703 {
704 /* @@ Would it speed things up to cache the last two symbols returned,
705 and maybe their address ranges? For many processors, only one memory
706 operand can be present at a time, so the 2-entry cache wouldn't be
707 constantly churned by code doing heavy memory accesses. */
708
709 /* Indices in `sorted_syms'. */
710 long min = 0;
711 long max = sorted_symcount;
712 long thisplace;
713 struct objdump_disasm_info *aux;
714 bfd *abfd;
715 asection *sec;
716 unsigned int opb;
717 bfd_boolean want_section;
718
719 if (sorted_symcount < 1)
720 return NULL;
721
722 aux = (struct objdump_disasm_info *) info->application_data;
723 abfd = aux->abfd;
724 sec = aux->sec;
725 opb = bfd_octets_per_byte (abfd);
726
727 /* Perform a binary search looking for the closest symbol to the
728 required value. We are searching the range (min, max]. */
729 while (min + 1 < max)
730 {
731 asymbol *sym;
732
733 thisplace = (max + min) / 2;
734 sym = sorted_syms[thisplace];
735
736 if (bfd_asymbol_value (sym) > vma)
737 max = thisplace;
738 else if (bfd_asymbol_value (sym) < vma)
739 min = thisplace;
740 else
741 {
742 min = thisplace;
743 break;
744 }
745 }
746
747 /* The symbol we want is now in min, the low end of the range we
748 were searching. If there are several symbols with the same
749 value, we want the first one. */
750 thisplace = min;
751 while (thisplace > 0
752 && (bfd_asymbol_value (sorted_syms[thisplace])
753 == bfd_asymbol_value (sorted_syms[thisplace - 1])))
754 --thisplace;
755
756 /* Prefer a symbol in the current section if we have multple symbols
757 with the same value, as can occur with overlays or zero size
758 sections. */
759 min = thisplace;
760 while (min < max
761 && (bfd_asymbol_value (sorted_syms[min])
762 == bfd_asymbol_value (sorted_syms[thisplace])))
763 {
764 if (sorted_syms[min]->section == sec
765 && info->symbol_is_valid (sorted_syms[min], info))
766 {
767 thisplace = min;
768
769 if (place != NULL)
770 *place = thisplace;
771
772 return sorted_syms[thisplace];
773 }
774 ++min;
775 }
776
777 /* If the file is relocatable, and the symbol could be from this
778 section, prefer a symbol from this section over symbols from
779 others, even if the other symbol's value might be closer.
780
781 Note that this may be wrong for some symbol references if the
782 sections have overlapping memory ranges, but in that case there's
783 no way to tell what's desired without looking at the relocation
784 table.
785
786 Also give the target a chance to reject symbols. */
787 want_section = (aux->require_sec
788 || ((abfd->flags & HAS_RELOC) != 0
789 && vma >= bfd_get_section_vma (abfd, sec)
790 && vma < (bfd_get_section_vma (abfd, sec)
791 + bfd_section_size (abfd, sec) / opb)));
792 if ((sorted_syms[thisplace]->section != sec && want_section)
793 || !info->symbol_is_valid (sorted_syms[thisplace], info))
794 {
795 long i;
796 long newplace = sorted_symcount;
797
798 for (i = min - 1; i >= 0; i--)
799 {
800 if ((sorted_syms[i]->section == sec || !want_section)
801 && info->symbol_is_valid (sorted_syms[i], info))
802 {
803 if (newplace == sorted_symcount)
804 newplace = i;
805
806 if (bfd_asymbol_value (sorted_syms[i])
807 != bfd_asymbol_value (sorted_syms[newplace]))
808 break;
809
810 /* Remember this symbol and keep searching until we reach
811 an earlier address. */
812 newplace = i;
813 }
814 }
815
816 if (newplace != sorted_symcount)
817 thisplace = newplace;
818 else
819 {
820 /* We didn't find a good symbol with a smaller value.
821 Look for one with a larger value. */
822 for (i = thisplace + 1; i < sorted_symcount; i++)
823 {
824 if ((sorted_syms[i]->section == sec || !want_section)
825 && info->symbol_is_valid (sorted_syms[i], info))
826 {
827 thisplace = i;
828 break;
829 }
830 }
831 }
832
833 if ((sorted_syms[thisplace]->section != sec && want_section)
834 || !info->symbol_is_valid (sorted_syms[thisplace], info))
835 /* There is no suitable symbol. */
836 return NULL;
837 }
838
839 if (place != NULL)
840 *place = thisplace;
841
842 return sorted_syms[thisplace];
843 }
844
845 /* Print an address and the offset to the nearest symbol. */
846
847 static void
848 objdump_print_addr_with_sym (bfd *abfd, asection *sec, asymbol *sym,
849 bfd_vma vma, struct disassemble_info *info,
850 bfd_boolean skip_zeroes)
851 {
852 objdump_print_value (vma, info, skip_zeroes);
853
854 if (sym == NULL)
855 {
856 bfd_vma secaddr;
857
858 (*info->fprintf_func) (info->stream, " <%s",
859 bfd_get_section_name (abfd, sec));
860 secaddr = bfd_get_section_vma (abfd, sec);
861 if (vma < secaddr)
862 {
863 (*info->fprintf_func) (info->stream, "-0x");
864 objdump_print_value (secaddr - vma, info, TRUE);
865 }
866 else if (vma > secaddr)
867 {
868 (*info->fprintf_func) (info->stream, "+0x");
869 objdump_print_value (vma - secaddr, info, TRUE);
870 }
871 (*info->fprintf_func) (info->stream, ">");
872 }
873 else
874 {
875 (*info->fprintf_func) (info->stream, " <");
876 objdump_print_symname (abfd, info, sym);
877 if (bfd_asymbol_value (sym) > vma)
878 {
879 (*info->fprintf_func) (info->stream, "-0x");
880 objdump_print_value (bfd_asymbol_value (sym) - vma, info, TRUE);
881 }
882 else if (vma > bfd_asymbol_value (sym))
883 {
884 (*info->fprintf_func) (info->stream, "+0x");
885 objdump_print_value (vma - bfd_asymbol_value (sym), info, TRUE);
886 }
887 (*info->fprintf_func) (info->stream, ">");
888 }
889
890 if (display_file_offsets)
891 info->fprintf_func (info->stream, _(" (File Offset: 0x%lx)"),
892 (long int)(sec->filepos + (vma - sec->vma)));
893 }
894
895 /* Print an address (VMA), symbolically if possible.
896 If SKIP_ZEROES is TRUE, don't output leading zeroes. */
897
898 static void
899 objdump_print_addr (bfd_vma vma,
900 struct disassemble_info *info,
901 bfd_boolean skip_zeroes)
902 {
903 struct objdump_disasm_info *aux;
904 asymbol *sym = NULL;
905 bfd_boolean skip_find = FALSE;
906
907 aux = (struct objdump_disasm_info *) info->application_data;
908
909 if (sorted_symcount < 1)
910 {
911 (*info->fprintf_func) (info->stream, "0x");
912 objdump_print_value (vma, info, skip_zeroes);
913
914 if (display_file_offsets)
915 info->fprintf_func (info->stream, _(" (File Offset: 0x%lx)"),
916 (long int)(aux->sec->filepos + (vma - aux->sec->vma)));
917 return;
918 }
919
920 if (aux->reloc != NULL
921 && aux->reloc->sym_ptr_ptr != NULL
922 && * aux->reloc->sym_ptr_ptr != NULL)
923 {
924 sym = * aux->reloc->sym_ptr_ptr;
925
926 /* Adjust the vma to the reloc. */
927 vma += bfd_asymbol_value (sym);
928
929 if (bfd_is_und_section (bfd_get_section (sym)))
930 skip_find = TRUE;
931 }
932
933 if (!skip_find)
934 sym = find_symbol_for_address (vma, info, NULL);
935
936 objdump_print_addr_with_sym (aux->abfd, aux->sec, sym, vma, info,
937 skip_zeroes);
938 }
939
940 /* Print VMA to INFO. This function is passed to the disassembler
941 routine. */
942
943 static void
944 objdump_print_address (bfd_vma vma, struct disassemble_info *info)
945 {
946 objdump_print_addr (vma, info, ! prefix_addresses);
947 }
948
949 /* Determine if the given address has a symbol associated with it. */
950
951 static int
952 objdump_symbol_at_address (bfd_vma vma, struct disassemble_info * info)
953 {
954 asymbol * sym;
955
956 sym = find_symbol_for_address (vma, info, NULL);
957
958 return (sym != NULL && (bfd_asymbol_value (sym) == vma));
959 }
960
961 /* Hold the last function name and the last line number we displayed
962 in a disassembly. */
963
964 static char *prev_functionname;
965 static unsigned int prev_line;
966
967 /* We keep a list of all files that we have seen when doing a
968 disassembly with source, so that we know how much of the file to
969 display. This can be important for inlined functions. */
970
971 struct print_file_list
972 {
973 struct print_file_list *next;
974 const char *filename;
975 const char *modname;
976 const char *map;
977 size_t mapsize;
978 const char **linemap;
979 unsigned maxline;
980 unsigned last_line;
981 int first;
982 };
983
984 static struct print_file_list *print_files;
985
986 /* The number of preceding context lines to show when we start
987 displaying a file for the first time. */
988
989 #define SHOW_PRECEDING_CONTEXT_LINES (5)
990
991 /* Read a complete file into memory. */
992
993 static const char *
994 slurp_file (const char *fn, size_t *size)
995 {
996 #ifdef HAVE_MMAP
997 int ps = getpagesize ();
998 size_t msize;
999 #endif
1000 const char *map;
1001 struct stat st;
1002 int fd = open (fn, O_RDONLY | O_BINARY);
1003
1004 if (fd < 0)
1005 return NULL;
1006 if (fstat (fd, &st) < 0)
1007 return NULL;
1008 *size = st.st_size;
1009 #ifdef HAVE_MMAP
1010 msize = (*size + ps - 1) & ~(ps - 1);
1011 map = mmap (NULL, msize, PROT_READ, MAP_SHARED, fd, 0);
1012 if (map != (char *)-1L)
1013 {
1014 close(fd);
1015 return map;
1016 }
1017 #endif
1018 map = malloc (*size);
1019 if (!map || (size_t) read (fd, (char *)map, *size) != *size)
1020 {
1021 free ((void *)map);
1022 map = NULL;
1023 }
1024 close (fd);
1025 return map;
1026 }
1027
1028 #define line_map_decrease 5
1029
1030 /* Precompute array of lines for a mapped file. */
1031
1032 static const char **
1033 index_file (const char *map, size_t size, unsigned int *maxline)
1034 {
1035 const char *p, *lstart, *end;
1036 int chars_per_line = 45; /* First iteration will use 40. */
1037 unsigned int lineno;
1038 const char **linemap = NULL;
1039 unsigned long line_map_size = 0;
1040
1041 lineno = 0;
1042 lstart = map;
1043 end = map + size;
1044
1045 for (p = map; p < end; p++)
1046 {
1047 if (*p == '\n')
1048 {
1049 if (p + 1 < end && p[1] == '\r')
1050 p++;
1051 }
1052 else if (*p == '\r')
1053 {
1054 if (p + 1 < end && p[1] == '\n')
1055 p++;
1056 }
1057 else
1058 continue;
1059
1060 /* End of line found. */
1061
1062 if (linemap == NULL || line_map_size < lineno + 1)
1063 {
1064 unsigned long newsize;
1065
1066 chars_per_line -= line_map_decrease;
1067 if (chars_per_line <= 1)
1068 chars_per_line = 1;
1069 line_map_size = size / chars_per_line + 1;
1070 if (line_map_size < lineno + 1)
1071 line_map_size = lineno + 1;
1072 newsize = line_map_size * sizeof (char *);
1073 linemap = xrealloc (linemap, newsize);
1074 }
1075
1076 linemap[lineno++] = lstart;
1077 lstart = p + 1;
1078 }
1079
1080 *maxline = lineno;
1081 return linemap;
1082 }
1083
1084 /* Tries to open MODNAME, and if successful adds a node to print_files
1085 linked list and returns that node. Returns NULL on failure. */
1086
1087 static struct print_file_list *
1088 try_print_file_open (const char *origname, const char *modname)
1089 {
1090 struct print_file_list *p;
1091
1092 p = xmalloc (sizeof (struct print_file_list));
1093
1094 p->map = slurp_file (modname, &p->mapsize);
1095 if (p->map == NULL)
1096 {
1097 free (p);
1098 return NULL;
1099 }
1100
1101 p->linemap = index_file (p->map, p->mapsize, &p->maxline);
1102 p->last_line = 0;
1103 p->filename = origname;
1104 p->modname = modname;
1105 p->next = print_files;
1106 p->first = 1;
1107 print_files = p;
1108 return p;
1109 }
1110
1111 /* If the the source file, as described in the symtab, is not found
1112 try to locate it in one of the paths specified with -I
1113 If found, add location to print_files linked list. */
1114
1115 static struct print_file_list *
1116 update_source_path (const char *filename)
1117 {
1118 struct print_file_list *p;
1119 const char *fname;
1120 int i;
1121
1122 if (filename == NULL)
1123 return NULL;
1124
1125 p = try_print_file_open (filename, filename);
1126 if (p != NULL)
1127 return p;
1128
1129 if (include_path_count == 0)
1130 return NULL;
1131
1132 /* Get the name of the file. */
1133 fname = strrchr (filename, '/');
1134 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
1135 {
1136 /* We could have a mixed forward/back slash case. */
1137 char *backslash = strrchr (filename, '\\');
1138 if (fname == NULL || (backslash != NULL && backslash > fname))
1139 fname = backslash;
1140 if (fname == NULL && filename[0] != '\0' && filename[1] == ':')
1141 fname = filename + 1;
1142 }
1143 #endif
1144 if (fname == NULL)
1145 fname = filename;
1146 else
1147 ++fname;
1148
1149 /* If file exists under a new path, we need to add it to the list
1150 so that show_line knows about it. */
1151 for (i = 0; i < include_path_count; i++)
1152 {
1153 char *modname = concat (include_paths[i], "/", fname, (const char *) 0);
1154
1155 p = try_print_file_open (filename, modname);
1156 if (p)
1157 return p;
1158
1159 free (modname);
1160 }
1161
1162 return NULL;
1163 }
1164
1165 /* Print a source file line. */
1166
1167 static void
1168 print_line (struct print_file_list *p, unsigned int line)
1169 {
1170 const char *l;
1171 size_t len;
1172
1173 --line;
1174 if (line >= p->maxline)
1175 return;
1176 l = p->linemap [line];
1177 /* Test fwrite return value to quiet glibc warning. */
1178 len = strcspn (l, "\n\r");
1179 if (len == 0 || fwrite (l, len, 1, stdout) == 1)
1180 putchar ('\n');
1181 }
1182
1183 /* Print a range of source code lines. */
1184
1185 static void
1186 dump_lines (struct print_file_list *p, unsigned int start, unsigned int end)
1187 {
1188 if (p->map == NULL)
1189 return;
1190 while (start <= end)
1191 {
1192 print_line (p, start);
1193 start++;
1194 }
1195 }
1196
1197 /* Show the line number, or the source line, in a disassembly
1198 listing. */
1199
1200 static void
1201 show_line (bfd *abfd, asection *section, bfd_vma addr_offset)
1202 {
1203 const char *filename;
1204 const char *functionname;
1205 unsigned int line;
1206 bfd_boolean reloc;
1207
1208 if (! with_line_numbers && ! with_source_code)
1209 return;
1210
1211 if (! bfd_find_nearest_line (abfd, section, syms, addr_offset, &filename,
1212 &functionname, &line))
1213 return;
1214
1215 if (filename != NULL && *filename == '\0')
1216 filename = NULL;
1217 if (functionname != NULL && *functionname == '\0')
1218 functionname = NULL;
1219
1220 if (filename
1221 && IS_ABSOLUTE_PATH (filename)
1222 && prefix)
1223 {
1224 char *path_up;
1225 const char *fname = filename;
1226 char *path = (char *) alloca (prefix_length + PATH_MAX + 1);
1227
1228 if (prefix_length)
1229 memcpy (path, prefix, prefix_length);
1230 path_up = path + prefix_length;
1231
1232 /* Build relocated filename, stripping off leading directories
1233 from the initial filename if requested. */
1234 if (prefix_strip > 0)
1235 {
1236 int level = 0;
1237 const char *s;
1238
1239 /* Skip selected directory levels. */
1240 for (s = fname + 1; *s != '\0' && level < prefix_strip; s++)
1241 if (IS_DIR_SEPARATOR(*s))
1242 {
1243 fname = s;
1244 level++;
1245 }
1246 }
1247
1248 /* Update complete filename. */
1249 strncpy (path_up, fname, PATH_MAX);
1250 path_up[PATH_MAX] = '\0';
1251
1252 filename = path;
1253 reloc = TRUE;
1254 }
1255 else
1256 reloc = FALSE;
1257
1258 if (with_line_numbers)
1259 {
1260 if (functionname != NULL
1261 && (prev_functionname == NULL
1262 || strcmp (functionname, prev_functionname) != 0))
1263 printf ("%s():\n", functionname);
1264 if (line > 0 && line != prev_line)
1265 printf ("%s:%u\n", filename == NULL ? "???" : filename, line);
1266 }
1267
1268 if (with_source_code
1269 && filename != NULL
1270 && line > 0)
1271 {
1272 struct print_file_list **pp, *p;
1273 unsigned l;
1274
1275 for (pp = &print_files; *pp != NULL; pp = &(*pp)->next)
1276 if (strcmp ((*pp)->filename, filename) == 0)
1277 break;
1278 p = *pp;
1279
1280 if (p == NULL)
1281 {
1282 if (reloc)
1283 filename = xstrdup (filename);
1284 p = update_source_path (filename);
1285 }
1286
1287 if (p != NULL && line != p->last_line)
1288 {
1289 if (file_start_context && p->first)
1290 l = 1;
1291 else
1292 {
1293 l = line - SHOW_PRECEDING_CONTEXT_LINES;
1294 if (l >= line)
1295 l = 1;
1296 if (p->last_line >= l && p->last_line <= line)
1297 l = p->last_line + 1;
1298 }
1299 dump_lines (p, l, line);
1300 p->last_line = line;
1301 p->first = 0;
1302 }
1303 }
1304
1305 if (functionname != NULL
1306 && (prev_functionname == NULL
1307 || strcmp (functionname, prev_functionname) != 0))
1308 {
1309 if (prev_functionname != NULL)
1310 free (prev_functionname);
1311 prev_functionname = xmalloc (strlen (functionname) + 1);
1312 strcpy (prev_functionname, functionname);
1313 }
1314
1315 if (line > 0 && line != prev_line)
1316 prev_line = line;
1317 }
1318
1319 /* Pseudo FILE object for strings. */
1320 typedef struct
1321 {
1322 char *buffer;
1323 size_t pos;
1324 size_t alloc;
1325 } SFILE;
1326
1327 /* sprintf to a "stream". */
1328
1329 static int ATTRIBUTE_PRINTF_2
1330 objdump_sprintf (SFILE *f, const char *format, ...)
1331 {
1332 size_t n;
1333 va_list args;
1334
1335 while (1)
1336 {
1337 size_t space = f->alloc - f->pos;
1338
1339 va_start (args, format);
1340 n = vsnprintf (f->buffer + f->pos, space, format, args);
1341 va_end (args);
1342
1343 if (space > n)
1344 break;
1345
1346 f->alloc = (f->alloc + n) * 2;
1347 f->buffer = xrealloc (f->buffer, f->alloc);
1348 }
1349 f->pos += n;
1350
1351 return n;
1352 }
1353
1354 /* Returns TRUE if the specified section should be dumped. */
1355
1356 static bfd_boolean
1357 process_section_p (asection * section)
1358 {
1359 size_t i;
1360
1361 if (only == NULL)
1362 return TRUE;
1363
1364 for (i = 0; i < only_used; i++)
1365 if (strcmp (only [i], section->name) == 0)
1366 return TRUE;
1367
1368 return FALSE;
1369 }
1370
1371
1372 /* The number of zeroes we want to see before we start skipping them.
1373 The number is arbitrarily chosen. */
1374
1375 #define DEFAULT_SKIP_ZEROES 8
1376
1377 /* The number of zeroes to skip at the end of a section. If the
1378 number of zeroes at the end is between SKIP_ZEROES_AT_END and
1379 SKIP_ZEROES, they will be disassembled. If there are fewer than
1380 SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic
1381 attempt to avoid disassembling zeroes inserted by section
1382 alignment. */
1383
1384 #define DEFAULT_SKIP_ZEROES_AT_END 3
1385
1386 /* Disassemble some data in memory between given values. */
1387
1388 static void
1389 disassemble_bytes (struct disassemble_info * info,
1390 disassembler_ftype disassemble_fn,
1391 bfd_boolean insns,
1392 bfd_byte * data,
1393 bfd_vma start_offset,
1394 bfd_vma stop_offset,
1395 bfd_vma rel_offset,
1396 arelent *** relppp,
1397 arelent ** relppend)
1398 {
1399 struct objdump_disasm_info *aux;
1400 asection *section;
1401 int octets_per_line;
1402 bfd_boolean done_dot;
1403 int skip_addr_chars;
1404 bfd_vma addr_offset;
1405 unsigned int opb = info->octets_per_byte;
1406 unsigned int skip_zeroes = info->skip_zeroes;
1407 unsigned int skip_zeroes_at_end = info->skip_zeroes_at_end;
1408 int octets = opb;
1409 SFILE sfile;
1410
1411 aux = (struct objdump_disasm_info *) info->application_data;
1412 section = aux->sec;
1413
1414 sfile.alloc = 120;
1415 sfile.buffer = xmalloc (sfile.alloc);
1416 sfile.pos = 0;
1417
1418 if (insns)
1419 octets_per_line = 4;
1420 else
1421 octets_per_line = 16;
1422
1423 /* Figure out how many characters to skip at the start of an
1424 address, to make the disassembly look nicer. We discard leading
1425 zeroes in chunks of 4, ensuring that there is always a leading
1426 zero remaining. */
1427 skip_addr_chars = 0;
1428 if (! prefix_addresses)
1429 {
1430 char buf[30];
1431
1432 bfd_sprintf_vma (aux->abfd, buf, section->vma + section->size / opb);
1433
1434 while (buf[skip_addr_chars] == '0')
1435 ++skip_addr_chars;
1436
1437 /* Don't discard zeros on overflow. */
1438 if (buf[skip_addr_chars] == '\0' && section->vma != 0)
1439 skip_addr_chars = 0;
1440
1441 if (skip_addr_chars != 0)
1442 skip_addr_chars = (skip_addr_chars - 1) & -4;
1443 }
1444
1445 info->insn_info_valid = 0;
1446
1447 done_dot = FALSE;
1448 addr_offset = start_offset;
1449 while (addr_offset < stop_offset)
1450 {
1451 bfd_vma z;
1452 bfd_boolean need_nl = FALSE;
1453 int previous_octets;
1454
1455 /* Remember the length of the previous instruction. */
1456 previous_octets = octets;
1457 octets = 0;
1458
1459 /* If we see more than SKIP_ZEROES octets of zeroes, we just
1460 print `...'. */
1461 for (z = addr_offset * opb; z < stop_offset * opb; z++)
1462 if (data[z] != 0)
1463 break;
1464 if (! disassemble_zeroes
1465 && (info->insn_info_valid == 0
1466 || info->branch_delay_insns == 0)
1467 && (z - addr_offset * opb >= skip_zeroes
1468 || (z == stop_offset * opb &&
1469 z - addr_offset * opb < skip_zeroes_at_end)))
1470 {
1471 /* If there are more nonzero octets to follow, we only skip
1472 zeroes in multiples of 4, to try to avoid running over
1473 the start of an instruction which happens to start with
1474 zero. */
1475 if (z != stop_offset * opb)
1476 z = addr_offset * opb + ((z - addr_offset * opb) &~ 3);
1477
1478 octets = z - addr_offset * opb;
1479
1480 /* If we are going to display more data, and we are displaying
1481 file offsets, then tell the user how many zeroes we skip
1482 and the file offset from where we resume dumping. */
1483 if (display_file_offsets && ((addr_offset + (octets / opb)) < stop_offset))
1484 printf ("\t... (skipping %d zeroes, resuming at file offset: 0x%lx)\n",
1485 octets / opb,
1486 (unsigned long) (section->filepos
1487 + (addr_offset + (octets / opb))));
1488 else
1489 printf ("\t...\n");
1490 }
1491 else
1492 {
1493 char buf[50];
1494 int bpc = 0;
1495 int pb = 0;
1496
1497 done_dot = FALSE;
1498
1499 if (with_line_numbers || with_source_code)
1500 show_line (aux->abfd, section, addr_offset);
1501
1502 if (! prefix_addresses)
1503 {
1504 char *s;
1505
1506 bfd_sprintf_vma (aux->abfd, buf, section->vma + addr_offset);
1507 for (s = buf + skip_addr_chars; *s == '0'; s++)
1508 *s = ' ';
1509 if (*s == '\0')
1510 *--s = '0';
1511 printf ("%s:\t", buf + skip_addr_chars);
1512 }
1513 else
1514 {
1515 aux->require_sec = TRUE;
1516 objdump_print_address (section->vma + addr_offset, info);
1517 aux->require_sec = FALSE;
1518 putchar (' ');
1519 }
1520
1521 if (insns)
1522 {
1523 sfile.pos = 0;
1524 info->fprintf_func = (fprintf_ftype) objdump_sprintf;
1525 info->stream = &sfile;
1526 info->bytes_per_line = 0;
1527 info->bytes_per_chunk = 0;
1528 info->flags = 0;
1529
1530 if (info->disassembler_needs_relocs
1531 && (bfd_get_file_flags (aux->abfd) & EXEC_P) == 0
1532 && (bfd_get_file_flags (aux->abfd) & DYNAMIC) == 0
1533 && *relppp < relppend)
1534 {
1535 bfd_signed_vma distance_to_rel;
1536
1537 distance_to_rel = (**relppp)->address
1538 - (rel_offset + addr_offset);
1539
1540 /* Check to see if the current reloc is associated with
1541 the instruction that we are about to disassemble. */
1542 if (distance_to_rel == 0
1543 /* FIXME: This is wrong. We are trying to catch
1544 relocs that are addressed part way through the
1545 current instruction, as might happen with a packed
1546 VLIW instruction. Unfortunately we do not know the
1547 length of the current instruction since we have not
1548 disassembled it yet. Instead we take a guess based
1549 upon the length of the previous instruction. The
1550 proper solution is to have a new target-specific
1551 disassembler function which just returns the length
1552 of an instruction at a given address without trying
1553 to display its disassembly. */
1554 || (distance_to_rel > 0
1555 && distance_to_rel < (bfd_signed_vma) (previous_octets/ opb)))
1556 {
1557 info->flags = INSN_HAS_RELOC;
1558 aux->reloc = **relppp;
1559 }
1560 else
1561 aux->reloc = NULL;
1562 }
1563
1564 octets = (*disassemble_fn) (section->vma + addr_offset, info);
1565 info->fprintf_func = (fprintf_ftype) fprintf;
1566 info->stream = stdout;
1567 if (info->bytes_per_line != 0)
1568 octets_per_line = info->bytes_per_line;
1569 if (octets < 0)
1570 {
1571 if (sfile.pos)
1572 printf ("%s\n", sfile.buffer);
1573 break;
1574 }
1575 }
1576 else
1577 {
1578 bfd_vma j;
1579
1580 octets = octets_per_line;
1581 if (addr_offset + octets / opb > stop_offset)
1582 octets = (stop_offset - addr_offset) * opb;
1583
1584 for (j = addr_offset * opb; j < addr_offset * opb + octets; ++j)
1585 {
1586 if (ISPRINT (data[j]))
1587 buf[j - addr_offset * opb] = data[j];
1588 else
1589 buf[j - addr_offset * opb] = '.';
1590 }
1591 buf[j - addr_offset * opb] = '\0';
1592 }
1593
1594 if (prefix_addresses
1595 ? show_raw_insn > 0
1596 : show_raw_insn >= 0)
1597 {
1598 bfd_vma j;
1599
1600 /* If ! prefix_addresses and ! wide_output, we print
1601 octets_per_line octets per line. */
1602 pb = octets;
1603 if (pb > octets_per_line && ! prefix_addresses && ! wide_output)
1604 pb = octets_per_line;
1605
1606 if (info->bytes_per_chunk)
1607 bpc = info->bytes_per_chunk;
1608 else
1609 bpc = 1;
1610
1611 for (j = addr_offset * opb; j < addr_offset * opb + pb; j += bpc)
1612 {
1613 int k;
1614
1615 if (bpc > 1 && info->display_endian == BFD_ENDIAN_LITTLE)
1616 {
1617 for (k = bpc - 1; k >= 0; k--)
1618 printf ("%02x", (unsigned) data[j + k]);
1619 putchar (' ');
1620 }
1621 else
1622 {
1623 for (k = 0; k < bpc; k++)
1624 printf ("%02x", (unsigned) data[j + k]);
1625 putchar (' ');
1626 }
1627 }
1628
1629 for (; pb < octets_per_line; pb += bpc)
1630 {
1631 int k;
1632
1633 for (k = 0; k < bpc; k++)
1634 printf (" ");
1635 putchar (' ');
1636 }
1637
1638 /* Separate raw data from instruction by extra space. */
1639 if (insns)
1640 putchar ('\t');
1641 else
1642 printf (" ");
1643 }
1644
1645 if (! insns)
1646 printf ("%s", buf);
1647 else if (sfile.pos)
1648 printf ("%s", sfile.buffer);
1649
1650 if (prefix_addresses
1651 ? show_raw_insn > 0
1652 : show_raw_insn >= 0)
1653 {
1654 while (pb < octets)
1655 {
1656 bfd_vma j;
1657 char *s;
1658
1659 putchar ('\n');
1660 j = addr_offset * opb + pb;
1661
1662 bfd_sprintf_vma (aux->abfd, buf, section->vma + j / opb);
1663 for (s = buf + skip_addr_chars; *s == '0'; s++)
1664 *s = ' ';
1665 if (*s == '\0')
1666 *--s = '0';
1667 printf ("%s:\t", buf + skip_addr_chars);
1668
1669 pb += octets_per_line;
1670 if (pb > octets)
1671 pb = octets;
1672 for (; j < addr_offset * opb + pb; j += bpc)
1673 {
1674 int k;
1675
1676 if (bpc > 1 && info->display_endian == BFD_ENDIAN_LITTLE)
1677 {
1678 for (k = bpc - 1; k >= 0; k--)
1679 printf ("%02x", (unsigned) data[j + k]);
1680 putchar (' ');
1681 }
1682 else
1683 {
1684 for (k = 0; k < bpc; k++)
1685 printf ("%02x", (unsigned) data[j + k]);
1686 putchar (' ');
1687 }
1688 }
1689 }
1690 }
1691
1692 if (!wide_output)
1693 putchar ('\n');
1694 else
1695 need_nl = TRUE;
1696 }
1697
1698 while ((*relppp) < relppend
1699 && (**relppp)->address < rel_offset + addr_offset + octets / opb)
1700 {
1701 if (dump_reloc_info || dump_dynamic_reloc_info)
1702 {
1703 arelent *q;
1704
1705 q = **relppp;
1706
1707 if (wide_output)
1708 putchar ('\t');
1709 else
1710 printf ("\t\t\t");
1711
1712 objdump_print_value (section->vma - rel_offset + q->address,
1713 info, TRUE);
1714
1715 if (q->howto == NULL)
1716 printf (": *unknown*\t");
1717 else if (q->howto->name)
1718 printf (": %s\t", q->howto->name);
1719 else
1720 printf (": %d\t", q->howto->type);
1721
1722 if (q->sym_ptr_ptr == NULL || *q->sym_ptr_ptr == NULL)
1723 printf ("*unknown*");
1724 else
1725 {
1726 const char *sym_name;
1727
1728 sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
1729 if (sym_name != NULL && *sym_name != '\0')
1730 objdump_print_symname (aux->abfd, info, *q->sym_ptr_ptr);
1731 else
1732 {
1733 asection *sym_sec;
1734
1735 sym_sec = bfd_get_section (*q->sym_ptr_ptr);
1736 sym_name = bfd_get_section_name (aux->abfd, sym_sec);
1737 if (sym_name == NULL || *sym_name == '\0')
1738 sym_name = "*unknown*";
1739 printf ("%s", sym_name);
1740 }
1741 }
1742
1743 if (q->addend)
1744 {
1745 printf ("+0x");
1746 objdump_print_value (q->addend, info, TRUE);
1747 }
1748
1749 printf ("\n");
1750 need_nl = FALSE;
1751 }
1752 ++(*relppp);
1753 }
1754
1755 if (need_nl)
1756 printf ("\n");
1757
1758 addr_offset += octets / opb;
1759 }
1760
1761 free (sfile.buffer);
1762 }
1763
1764 static void
1765 disassemble_section (bfd *abfd, asection *section, void *info)
1766 {
1767 const struct elf_backend_data * bed;
1768 bfd_vma sign_adjust = 0;
1769 struct disassemble_info * pinfo = (struct disassemble_info *) info;
1770 struct objdump_disasm_info * paux;
1771 unsigned int opb = pinfo->octets_per_byte;
1772 bfd_byte * data = NULL;
1773 bfd_size_type datasize = 0;
1774 arelent ** rel_pp = NULL;
1775 arelent ** rel_ppstart = NULL;
1776 arelent ** rel_ppend;
1777 unsigned long stop_offset;
1778 asymbol * sym = NULL;
1779 long place = 0;
1780 long rel_count;
1781 bfd_vma rel_offset;
1782 unsigned long addr_offset;
1783
1784 /* Sections that do not contain machine
1785 code are not normally disassembled. */
1786 if (! disassemble_all
1787 && only == NULL
1788 && ((section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
1789 != (SEC_CODE | SEC_HAS_CONTENTS)))
1790 return;
1791
1792 if (! process_section_p (section))
1793 return;
1794
1795 datasize = bfd_get_section_size (section);
1796 if (datasize == 0)
1797 return;
1798
1799 /* Decide which set of relocs to use. Load them if necessary. */
1800 paux = (struct objdump_disasm_info *) pinfo->application_data;
1801 if (paux->dynrelbuf)
1802 {
1803 rel_pp = paux->dynrelbuf;
1804 rel_count = paux->dynrelcount;
1805 /* Dynamic reloc addresses are absolute, non-dynamic are section
1806 relative. REL_OFFSET specifies the reloc address corresponding
1807 to the start of this section. */
1808 rel_offset = section->vma;
1809 }
1810 else
1811 {
1812 rel_count = 0;
1813 rel_pp = NULL;
1814 rel_offset = 0;
1815
1816 if ((section->flags & SEC_RELOC) != 0
1817 && (dump_reloc_info || pinfo->disassembler_needs_relocs))
1818 {
1819 long relsize;
1820
1821 relsize = bfd_get_reloc_upper_bound (abfd, section);
1822 if (relsize < 0)
1823 bfd_fatal (bfd_get_filename (abfd));
1824
1825 if (relsize > 0)
1826 {
1827 rel_ppstart = rel_pp = xmalloc (relsize);
1828 rel_count = bfd_canonicalize_reloc (abfd, section, rel_pp, syms);
1829 if (rel_count < 0)
1830 bfd_fatal (bfd_get_filename (abfd));
1831
1832 /* Sort the relocs by address. */
1833 qsort (rel_pp, rel_count, sizeof (arelent *), compare_relocs);
1834 }
1835 }
1836 }
1837 rel_ppend = rel_pp + rel_count;
1838
1839 data = xmalloc (datasize);
1840
1841 bfd_get_section_contents (abfd, section, data, 0, datasize);
1842
1843 paux->sec = section;
1844 pinfo->buffer = data;
1845 pinfo->buffer_vma = section->vma;
1846 pinfo->buffer_length = datasize;
1847 pinfo->section = section;
1848
1849 if (start_address == (bfd_vma) -1
1850 || start_address < pinfo->buffer_vma)
1851 addr_offset = 0;
1852 else
1853 addr_offset = start_address - pinfo->buffer_vma;
1854
1855 if (stop_address == (bfd_vma) -1)
1856 stop_offset = datasize / opb;
1857 else
1858 {
1859 if (stop_address < pinfo->buffer_vma)
1860 stop_offset = 0;
1861 else
1862 stop_offset = stop_address - pinfo->buffer_vma;
1863 if (stop_offset > pinfo->buffer_length / opb)
1864 stop_offset = pinfo->buffer_length / opb;
1865 }
1866
1867 /* Skip over the relocs belonging to addresses below the
1868 start address. */
1869 while (rel_pp < rel_ppend
1870 && (*rel_pp)->address < rel_offset + addr_offset)
1871 ++rel_pp;
1872
1873 if (addr_offset < stop_offset)
1874 printf (_("\nDisassembly of section %s:\n"), section->name);
1875
1876 /* Find the nearest symbol forwards from our current position. */
1877 paux->require_sec = TRUE;
1878 sym = find_symbol_for_address (section->vma + addr_offset, info, &place);
1879 paux->require_sec = FALSE;
1880
1881 /* PR 9774: If the target used signed 32-bit addresses then we must make
1882 sure that we sign extend the value that we calculate for 'addr' in the
1883 loop below. */
1884 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
1885 && (bed = get_elf_backend_data (abfd)) != NULL
1886 && bed->sign_extend_vma)
1887 sign_adjust = 0x80000000;
1888
1889 /* Disassemble a block of instructions up to the address associated with
1890 the symbol we have just found. Then print the symbol and find the
1891 next symbol on. Repeat until we have disassembled the entire section
1892 or we have reached the end of the address range we are interested in. */
1893 while (addr_offset < stop_offset)
1894 {
1895 bfd_vma addr;
1896 asymbol *nextsym;
1897 unsigned long nextstop_offset;
1898 bfd_boolean insns;
1899
1900 addr = section->vma + addr_offset;
1901 addr = (addr ^ sign_adjust) - sign_adjust;
1902
1903 if (sym != NULL && bfd_asymbol_value (sym) <= addr)
1904 {
1905 int x;
1906
1907 for (x = place;
1908 (x < sorted_symcount
1909 && (bfd_asymbol_value (sorted_syms[x]) <= addr));
1910 ++x)
1911 continue;
1912
1913 pinfo->symbols = sorted_syms + place;
1914 pinfo->num_symbols = x - place;
1915 pinfo->symtab_pos = place;
1916 }
1917 else
1918 {
1919 pinfo->symbols = NULL;
1920 pinfo->num_symbols = 0;
1921 pinfo->symtab_pos = -1;
1922 }
1923
1924 if (! prefix_addresses)
1925 {
1926 pinfo->fprintf_func (pinfo->stream, "\n");
1927 objdump_print_addr_with_sym (abfd, section, sym, addr,
1928 pinfo, FALSE);
1929 pinfo->fprintf_func (pinfo->stream, ":\n");
1930 }
1931
1932 if (sym != NULL && bfd_asymbol_value (sym) > addr)
1933 nextsym = sym;
1934 else if (sym == NULL)
1935 nextsym = NULL;
1936 else
1937 {
1938 #define is_valid_next_sym(SYM) \
1939 ((SYM)->section == section \
1940 && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
1941 && pinfo->symbol_is_valid (SYM, pinfo))
1942
1943 /* Search forward for the next appropriate symbol in
1944 SECTION. Note that all the symbols are sorted
1945 together into one big array, and that some sections
1946 may have overlapping addresses. */
1947 while (place < sorted_symcount
1948 && ! is_valid_next_sym (sorted_syms [place]))
1949 ++place;
1950
1951 if (place >= sorted_symcount)
1952 nextsym = NULL;
1953 else
1954 nextsym = sorted_syms[place];
1955 }
1956
1957 if (sym != NULL && bfd_asymbol_value (sym) > addr)
1958 nextstop_offset = bfd_asymbol_value (sym) - section->vma;
1959 else if (nextsym == NULL)
1960 nextstop_offset = stop_offset;
1961 else
1962 nextstop_offset = bfd_asymbol_value (nextsym) - section->vma;
1963
1964 if (nextstop_offset > stop_offset)
1965 nextstop_offset = stop_offset;
1966
1967 /* If a symbol is explicitly marked as being an object
1968 rather than a function, just dump the bytes without
1969 disassembling them. */
1970 if (disassemble_all
1971 || sym == NULL
1972 || sym->section != section
1973 || bfd_asymbol_value (sym) > addr
1974 || ((sym->flags & BSF_OBJECT) == 0
1975 && (strstr (bfd_asymbol_name (sym), "gnu_compiled")
1976 == NULL)
1977 && (strstr (bfd_asymbol_name (sym), "gcc2_compiled")
1978 == NULL))
1979 || (sym->flags & BSF_FUNCTION) != 0)
1980 insns = TRUE;
1981 else
1982 insns = FALSE;
1983
1984 disassemble_bytes (pinfo, paux->disassemble_fn, insns, data,
1985 addr_offset, nextstop_offset,
1986 rel_offset, &rel_pp, rel_ppend);
1987
1988 addr_offset = nextstop_offset;
1989 sym = nextsym;
1990 }
1991
1992 free (data);
1993
1994 if (rel_ppstart != NULL)
1995 free (rel_ppstart);
1996 }
1997
1998 /* Disassemble the contents of an object file. */
1999
2000 static void
2001 disassemble_data (bfd *abfd)
2002 {
2003 struct disassemble_info disasm_info;
2004 struct objdump_disasm_info aux;
2005 long i;
2006
2007 print_files = NULL;
2008 prev_functionname = NULL;
2009 prev_line = -1;
2010
2011 /* We make a copy of syms to sort. We don't want to sort syms
2012 because that will screw up the relocs. */
2013 sorted_symcount = symcount ? symcount : dynsymcount;
2014 sorted_syms = xmalloc ((sorted_symcount + synthcount) * sizeof (asymbol *));
2015 memcpy (sorted_syms, symcount ? syms : dynsyms,
2016 sorted_symcount * sizeof (asymbol *));
2017
2018 sorted_symcount = remove_useless_symbols (sorted_syms, sorted_symcount);
2019
2020 for (i = 0; i < synthcount; ++i)
2021 {
2022 sorted_syms[sorted_symcount] = synthsyms + i;
2023 ++sorted_symcount;
2024 }
2025
2026 /* Sort the symbols into section and symbol order. */
2027 qsort (sorted_syms, sorted_symcount, sizeof (asymbol *), compare_symbols);
2028
2029 init_disassemble_info (&disasm_info, stdout, (fprintf_ftype) fprintf);
2030
2031 disasm_info.application_data = (void *) &aux;
2032 aux.abfd = abfd;
2033 aux.require_sec = FALSE;
2034 aux.dynrelbuf = NULL;
2035 aux.dynrelcount = 0;
2036 aux.reloc = NULL;
2037
2038 disasm_info.print_address_func = objdump_print_address;
2039 disasm_info.symbol_at_address_func = objdump_symbol_at_address;
2040
2041 if (machine != NULL)
2042 {
2043 const bfd_arch_info_type *info = bfd_scan_arch (machine);
2044
2045 if (info == NULL)
2046 fatal (_("Can't use supplied machine %s"), machine);
2047
2048 abfd->arch_info = info;
2049 }
2050
2051 if (endian != BFD_ENDIAN_UNKNOWN)
2052 {
2053 struct bfd_target *xvec;
2054
2055 xvec = xmalloc (sizeof (struct bfd_target));
2056 memcpy (xvec, abfd->xvec, sizeof (struct bfd_target));
2057 xvec->byteorder = endian;
2058 abfd->xvec = xvec;
2059 }
2060
2061 /* Use libopcodes to locate a suitable disassembler. */
2062 aux.disassemble_fn = disassembler (abfd);
2063 if (!aux.disassemble_fn)
2064 {
2065 non_fatal (_("Can't disassemble for architecture %s\n"),
2066 bfd_printable_arch_mach (bfd_get_arch (abfd), 0));
2067 exit_status = 1;
2068 return;
2069 }
2070
2071 disasm_info.flavour = bfd_get_flavour (abfd);
2072 disasm_info.arch = bfd_get_arch (abfd);
2073 disasm_info.mach = bfd_get_mach (abfd);
2074 disasm_info.disassembler_options = disassembler_options;
2075 disasm_info.octets_per_byte = bfd_octets_per_byte (abfd);
2076 disasm_info.skip_zeroes = DEFAULT_SKIP_ZEROES;
2077 disasm_info.skip_zeroes_at_end = DEFAULT_SKIP_ZEROES_AT_END;
2078 disasm_info.disassembler_needs_relocs = FALSE;
2079
2080 if (bfd_big_endian (abfd))
2081 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_BIG;
2082 else if (bfd_little_endian (abfd))
2083 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_LITTLE;
2084 else
2085 /* ??? Aborting here seems too drastic. We could default to big or little
2086 instead. */
2087 disasm_info.endian = BFD_ENDIAN_UNKNOWN;
2088
2089 /* Allow the target to customize the info structure. */
2090 disassemble_init_for_target (& disasm_info);
2091
2092 /* Pre-load the dynamic relocs if we are going
2093 to be dumping them along with the disassembly. */
2094 if (dump_dynamic_reloc_info)
2095 {
2096 long relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2097
2098 if (relsize < 0)
2099 bfd_fatal (bfd_get_filename (abfd));
2100
2101 if (relsize > 0)
2102 {
2103 aux.dynrelbuf = xmalloc (relsize);
2104 aux.dynrelcount = bfd_canonicalize_dynamic_reloc (abfd,
2105 aux.dynrelbuf,
2106 dynsyms);
2107 if (aux.dynrelcount < 0)
2108 bfd_fatal (bfd_get_filename (abfd));
2109
2110 /* Sort the relocs by address. */
2111 qsort (aux.dynrelbuf, aux.dynrelcount, sizeof (arelent *),
2112 compare_relocs);
2113 }
2114 }
2115 disasm_info.symtab = sorted_syms;
2116 disasm_info.symtab_size = sorted_symcount;
2117
2118 bfd_map_over_sections (abfd, disassemble_section, & disasm_info);
2119
2120 if (aux.dynrelbuf != NULL)
2121 free (aux.dynrelbuf);
2122 free (sorted_syms);
2123 }
2124 \f
2125 static int
2126 load_specific_debug_section (enum dwarf_section_display_enum debug,
2127 asection *sec, void *file)
2128 {
2129 struct dwarf_section *section = &debug_displays [debug].section;
2130 bfd *abfd = file;
2131 bfd_boolean ret;
2132 int section_is_compressed;
2133
2134 /* If it is already loaded, do nothing. */
2135 if (section->start != NULL)
2136 return 1;
2137
2138 section_is_compressed = section->name == section->compressed_name;
2139
2140 section->address = 0;
2141 section->size = bfd_get_section_size (sec);
2142 section->start = xmalloc (section->size);
2143
2144 if (is_relocatable && debug_displays [debug].relocate)
2145 ret = bfd_simple_get_relocated_section_contents (abfd,
2146 sec,
2147 section->start,
2148 syms) != NULL;
2149 else
2150 ret = bfd_get_section_contents (abfd, sec, section->start, 0,
2151 section->size);
2152
2153 if (! ret)
2154 {
2155 free_debug_section (debug);
2156 printf (_("\nCan't get contents for section '%s'.\n"),
2157 section->name);
2158 return 0;
2159 }
2160
2161 if (section_is_compressed)
2162 {
2163 bfd_size_type size = section->size;
2164 if (! bfd_uncompress_section_contents (&section->start, &size))
2165 {
2166 free_debug_section (debug);
2167 printf (_("\nCan't uncompress section '%s'.\n"), section->name);
2168 return 0;
2169 }
2170 section->size = size;
2171 }
2172
2173 return 1;
2174 }
2175
2176 int
2177 load_debug_section (enum dwarf_section_display_enum debug, void *file)
2178 {
2179 struct dwarf_section *section = &debug_displays [debug].section;
2180 bfd *abfd = file;
2181 asection *sec;
2182
2183 /* If it is already loaded, do nothing. */
2184 if (section->start != NULL)
2185 return 1;
2186
2187 /* Locate the debug section. */
2188 sec = bfd_get_section_by_name (abfd, section->uncompressed_name);
2189 if (sec != NULL)
2190 section->name = section->uncompressed_name;
2191 else
2192 {
2193 sec = bfd_get_section_by_name (abfd, section->compressed_name);
2194 if (sec != NULL)
2195 section->name = section->compressed_name;
2196 }
2197 if (sec == NULL)
2198 return 0;
2199
2200 return load_specific_debug_section (debug, sec, file);
2201 }
2202
2203 void
2204 free_debug_section (enum dwarf_section_display_enum debug)
2205 {
2206 struct dwarf_section *section = &debug_displays [debug].section;
2207
2208 if (section->start == NULL)
2209 return;
2210
2211 free ((char *) section->start);
2212 section->start = NULL;
2213 section->address = 0;
2214 section->size = 0;
2215 }
2216
2217 static void
2218 dump_dwarf_section (bfd *abfd, asection *section,
2219 void *arg ATTRIBUTE_UNUSED)
2220 {
2221 const char *name = bfd_get_section_name (abfd, section);
2222 const char *match;
2223 enum dwarf_section_display_enum i;
2224
2225 if (CONST_STRNEQ (name, ".gnu.linkonce.wi."))
2226 match = ".debug_info";
2227 else
2228 match = name;
2229
2230 for (i = 0; i < max; i++)
2231 if ((strcmp (debug_displays [i].section.uncompressed_name, match) == 0
2232 || strcmp (debug_displays [i].section.compressed_name, match) == 0)
2233 && debug_displays [i].enabled != NULL
2234 && *debug_displays [i].enabled)
2235 {
2236 if (!debug_displays [i].eh_frame)
2237 {
2238 struct dwarf_section *sec = &debug_displays [i].section;
2239
2240 if (strcmp (sec->uncompressed_name, match) == 0)
2241 sec->name = sec->uncompressed_name;
2242 else
2243 sec->name = sec->compressed_name;
2244 if (load_specific_debug_section (i, section, abfd))
2245 {
2246 debug_displays [i].display (sec, abfd);
2247
2248 if (i != info && i != abbrev)
2249 free_debug_section (i);
2250 }
2251 }
2252 break;
2253 }
2254 }
2255
2256 /* Dump the dwarf debugging information. */
2257
2258 static void
2259 dump_dwarf (bfd *abfd)
2260 {
2261 is_relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2262
2263 /* FIXME: bfd_get_arch_size may return -1. We assume that 64bit
2264 targets will return 64. */
2265 eh_addr_size = bfd_get_arch_size (abfd) == 64 ? 8 : 4;
2266
2267 if (bfd_big_endian (abfd))
2268 byte_get = byte_get_big_endian;
2269 else if (bfd_little_endian (abfd))
2270 byte_get = byte_get_little_endian;
2271 else
2272 abort ();
2273
2274 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
2275 {
2276 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2277 init_dwarf_regnames (bed->elf_machine_code);
2278 }
2279
2280 bfd_map_over_sections (abfd, dump_dwarf_section, NULL);
2281
2282 free_debug_memory ();
2283 }
2284 \f
2285 /* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
2286 it. Return NULL on failure. */
2287
2288 static char *
2289 read_section_stabs (bfd *abfd, const char *sect_name, bfd_size_type *size_ptr)
2290 {
2291 asection *stabsect;
2292 bfd_size_type size;
2293 char *contents;
2294
2295 stabsect = bfd_get_section_by_name (abfd, sect_name);
2296 if (stabsect == NULL)
2297 {
2298 printf (_("No %s section present\n\n"), sect_name);
2299 return FALSE;
2300 }
2301
2302 size = bfd_section_size (abfd, stabsect);
2303 contents = xmalloc (size);
2304
2305 if (! bfd_get_section_contents (abfd, stabsect, contents, 0, size))
2306 {
2307 non_fatal (_("Reading %s section of %s failed: %s"),
2308 sect_name, bfd_get_filename (abfd),
2309 bfd_errmsg (bfd_get_error ()));
2310 free (contents);
2311 exit_status = 1;
2312 return NULL;
2313 }
2314
2315 *size_ptr = size;
2316
2317 return contents;
2318 }
2319
2320 /* Stabs entries use a 12 byte format:
2321 4 byte string table index
2322 1 byte stab type
2323 1 byte stab other field
2324 2 byte stab desc field
2325 4 byte stab value
2326 FIXME: This will have to change for a 64 bit object format. */
2327
2328 #define STRDXOFF (0)
2329 #define TYPEOFF (4)
2330 #define OTHEROFF (5)
2331 #define DESCOFF (6)
2332 #define VALOFF (8)
2333 #define STABSIZE (12)
2334
2335 /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
2336 using string table section STRSECT_NAME (in `strtab'). */
2337
2338 static void
2339 print_section_stabs (bfd *abfd,
2340 const char *stabsect_name,
2341 unsigned *string_offset_ptr)
2342 {
2343 int i;
2344 unsigned file_string_table_offset = 0;
2345 unsigned next_file_string_table_offset = *string_offset_ptr;
2346 bfd_byte *stabp, *stabs_end;
2347
2348 stabp = stabs;
2349 stabs_end = stabp + stab_size;
2350
2351 printf (_("Contents of %s section:\n\n"), stabsect_name);
2352 printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
2353
2354 /* Loop through all symbols and print them.
2355
2356 We start the index at -1 because there is a dummy symbol on
2357 the front of stabs-in-{coff,elf} sections that supplies sizes. */
2358 for (i = -1; stabp < stabs_end; stabp += STABSIZE, i++)
2359 {
2360 const char *name;
2361 unsigned long strx;
2362 unsigned char type, other;
2363 unsigned short desc;
2364 bfd_vma value;
2365
2366 strx = bfd_h_get_32 (abfd, stabp + STRDXOFF);
2367 type = bfd_h_get_8 (abfd, stabp + TYPEOFF);
2368 other = bfd_h_get_8 (abfd, stabp + OTHEROFF);
2369 desc = bfd_h_get_16 (abfd, stabp + DESCOFF);
2370 value = bfd_h_get_32 (abfd, stabp + VALOFF);
2371
2372 printf ("\n%-6d ", i);
2373 /* Either print the stab name, or, if unnamed, print its number
2374 again (makes consistent formatting for tools like awk). */
2375 name = bfd_get_stab_name (type);
2376 if (name != NULL)
2377 printf ("%-6s", name);
2378 else if (type == N_UNDF)
2379 printf ("HdrSym");
2380 else
2381 printf ("%-6d", type);
2382 printf (" %-6d %-6d ", other, desc);
2383 bfd_printf_vma (abfd, value);
2384 printf (" %-6lu", strx);
2385
2386 /* Symbols with type == 0 (N_UNDF) specify the length of the
2387 string table associated with this file. We use that info
2388 to know how to relocate the *next* file's string table indices. */
2389 if (type == N_UNDF)
2390 {
2391 file_string_table_offset = next_file_string_table_offset;
2392 next_file_string_table_offset += value;
2393 }
2394 else
2395 {
2396 /* Using the (possibly updated) string table offset, print the
2397 string (if any) associated with this symbol. */
2398 if ((strx + file_string_table_offset) < stabstr_size)
2399 printf (" %s", &strtab[strx + file_string_table_offset]);
2400 else
2401 printf (" *");
2402 }
2403 }
2404 printf ("\n\n");
2405 *string_offset_ptr = next_file_string_table_offset;
2406 }
2407
2408 typedef struct
2409 {
2410 const char * section_name;
2411 const char * string_section_name;
2412 unsigned string_offset;
2413 }
2414 stab_section_names;
2415
2416 static void
2417 find_stabs_section (bfd *abfd, asection *section, void *names)
2418 {
2419 int len;
2420 stab_section_names * sought = (stab_section_names *) names;
2421
2422 /* Check for section names for which stabsect_name is a prefix, to
2423 handle .stab.N, etc. */
2424 len = strlen (sought->section_name);
2425
2426 /* If the prefix matches, and the files section name ends with a
2427 nul or a digit, then we match. I.e., we want either an exact
2428 match or a section followed by a number. */
2429 if (strncmp (sought->section_name, section->name, len) == 0
2430 && (section->name[len] == 0
2431 || (section->name[len] == '.' && ISDIGIT (section->name[len + 1]))))
2432 {
2433 if (strtab == NULL)
2434 strtab = read_section_stabs (abfd, sought->string_section_name,
2435 &stabstr_size);
2436
2437 if (strtab)
2438 {
2439 stabs = (bfd_byte *) read_section_stabs (abfd, section->name,
2440 &stab_size);
2441 if (stabs)
2442 print_section_stabs (abfd, section->name, &sought->string_offset);
2443 }
2444 }
2445 }
2446
2447 static void
2448 dump_stabs_section (bfd *abfd, char *stabsect_name, char *strsect_name)
2449 {
2450 stab_section_names s;
2451
2452 s.section_name = stabsect_name;
2453 s.string_section_name = strsect_name;
2454 s.string_offset = 0;
2455
2456 bfd_map_over_sections (abfd, find_stabs_section, & s);
2457
2458 free (strtab);
2459 strtab = NULL;
2460 }
2461
2462 /* Dump the any sections containing stabs debugging information. */
2463
2464 static void
2465 dump_stabs (bfd *abfd)
2466 {
2467 dump_stabs_section (abfd, ".stab", ".stabstr");
2468 dump_stabs_section (abfd, ".stab.excl", ".stab.exclstr");
2469 dump_stabs_section (abfd, ".stab.index", ".stab.indexstr");
2470
2471 /* For Darwin. */
2472 dump_stabs_section (abfd, "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr");
2473
2474 dump_stabs_section (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
2475 }
2476 \f
2477 static void
2478 dump_bfd_header (bfd *abfd)
2479 {
2480 char *comma = "";
2481
2482 printf (_("architecture: %s, "),
2483 bfd_printable_arch_mach (bfd_get_arch (abfd),
2484 bfd_get_mach (abfd)));
2485 printf (_("flags 0x%08x:\n"), abfd->flags);
2486
2487 #define PF(x, y) if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
2488 PF (HAS_RELOC, "HAS_RELOC");
2489 PF (EXEC_P, "EXEC_P");
2490 PF (HAS_LINENO, "HAS_LINENO");
2491 PF (HAS_DEBUG, "HAS_DEBUG");
2492 PF (HAS_SYMS, "HAS_SYMS");
2493 PF (HAS_LOCALS, "HAS_LOCALS");
2494 PF (DYNAMIC, "DYNAMIC");
2495 PF (WP_TEXT, "WP_TEXT");
2496 PF (D_PAGED, "D_PAGED");
2497 PF (BFD_IS_RELAXABLE, "BFD_IS_RELAXABLE");
2498 PF (HAS_LOAD_PAGE, "HAS_LOAD_PAGE");
2499 printf (_("\nstart address 0x"));
2500 bfd_printf_vma (abfd, abfd->start_address);
2501 printf ("\n");
2502 }
2503
2504 \f
2505 static void
2506 dump_bfd_private_header (bfd *abfd)
2507 {
2508 bfd_print_private_bfd_data (abfd, stdout);
2509 }
2510
2511 \f
2512 /* Display a section in hexadecimal format with associated characters.
2513 Each line prefixed by the zero padded address. */
2514
2515 static void
2516 dump_section (bfd *abfd, asection *section, void *dummy ATTRIBUTE_UNUSED)
2517 {
2518 bfd_byte *data = 0;
2519 bfd_size_type datasize;
2520 bfd_size_type addr_offset;
2521 bfd_size_type start_offset;
2522 bfd_size_type stop_offset;
2523 unsigned int opb = bfd_octets_per_byte (abfd);
2524 /* Bytes per line. */
2525 const int onaline = 16;
2526 char buf[64];
2527 int count;
2528 int width;
2529
2530 if ((section->flags & SEC_HAS_CONTENTS) == 0)
2531 return;
2532
2533 if (! process_section_p (section))
2534 return;
2535
2536 if ((datasize = bfd_section_size (abfd, section)) == 0)
2537 return;
2538
2539 /* Compute the address range to display. */
2540 if (start_address == (bfd_vma) -1
2541 || start_address < section->vma)
2542 start_offset = 0;
2543 else
2544 start_offset = start_address - section->vma;
2545
2546 if (stop_address == (bfd_vma) -1)
2547 stop_offset = datasize / opb;
2548 else
2549 {
2550 if (stop_address < section->vma)
2551 stop_offset = 0;
2552 else
2553 stop_offset = stop_address - section->vma;
2554
2555 if (stop_offset > datasize / opb)
2556 stop_offset = datasize / opb;
2557 }
2558
2559 if (start_offset >= stop_offset)
2560 return;
2561
2562 printf (_("Contents of section %s:"), section->name);
2563 if (display_file_offsets)
2564 printf (_(" (Starting at file offset: 0x%lx)"),
2565 (unsigned long) (section->filepos + start_offset));
2566 printf ("\n");
2567
2568 data = xmalloc (datasize);
2569
2570 bfd_get_section_contents (abfd, section, data, 0, datasize);
2571
2572 width = 4;
2573
2574 bfd_sprintf_vma (abfd, buf, start_offset + section->vma);
2575 if (strlen (buf) >= sizeof (buf))
2576 abort ();
2577
2578 count = 0;
2579 while (buf[count] == '0' && buf[count+1] != '\0')
2580 count++;
2581 count = strlen (buf) - count;
2582 if (count > width)
2583 width = count;
2584
2585 bfd_sprintf_vma (abfd, buf, stop_offset + section->vma - 1);
2586 if (strlen (buf) >= sizeof (buf))
2587 abort ();
2588
2589 count = 0;
2590 while (buf[count] == '0' && buf[count+1] != '\0')
2591 count++;
2592 count = strlen (buf) - count;
2593 if (count > width)
2594 width = count;
2595
2596 for (addr_offset = start_offset;
2597 addr_offset < stop_offset; addr_offset += onaline / opb)
2598 {
2599 bfd_size_type j;
2600
2601 bfd_sprintf_vma (abfd, buf, (addr_offset + section->vma));
2602 count = strlen (buf);
2603 if ((size_t) count >= sizeof (buf))
2604 abort ();
2605
2606 putchar (' ');
2607 while (count < width)
2608 {
2609 putchar ('0');
2610 count++;
2611 }
2612 fputs (buf + count - width, stdout);
2613 putchar (' ');
2614
2615 for (j = addr_offset * opb;
2616 j < addr_offset * opb + onaline; j++)
2617 {
2618 if (j < stop_offset * opb)
2619 printf ("%02x", (unsigned) (data[j]));
2620 else
2621 printf (" ");
2622 if ((j & 3) == 3)
2623 printf (" ");
2624 }
2625
2626 printf (" ");
2627 for (j = addr_offset * opb;
2628 j < addr_offset * opb + onaline; j++)
2629 {
2630 if (j >= stop_offset * opb)
2631 printf (" ");
2632 else
2633 printf ("%c", ISPRINT (data[j]) ? data[j] : '.');
2634 }
2635 putchar ('\n');
2636 }
2637 free (data);
2638 }
2639
2640 /* Actually display the various requested regions. */
2641
2642 static void
2643 dump_data (bfd *abfd)
2644 {
2645 bfd_map_over_sections (abfd, dump_section, NULL);
2646 }
2647
2648 /* Should perhaps share code and display with nm? */
2649
2650 static void
2651 dump_symbols (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean dynamic)
2652 {
2653 asymbol **current;
2654 long max;
2655 long count;
2656
2657 if (dynamic)
2658 {
2659 current = dynsyms;
2660 max = dynsymcount;
2661 printf ("DYNAMIC SYMBOL TABLE:\n");
2662 }
2663 else
2664 {
2665 current = syms;
2666 max = symcount;
2667 printf ("SYMBOL TABLE:\n");
2668 }
2669
2670 if (max == 0)
2671 printf (_("no symbols\n"));
2672
2673 for (count = 0; count < max; count++)
2674 {
2675 bfd *cur_bfd;
2676
2677 if (*current == NULL)
2678 printf (_("no information for symbol number %ld\n"), count);
2679
2680 else if ((cur_bfd = bfd_asymbol_bfd (*current)) == NULL)
2681 printf (_("could not determine the type of symbol number %ld\n"),
2682 count);
2683
2684 else if (process_section_p ((* current)->section)
2685 && (dump_special_syms
2686 || !bfd_is_target_special_symbol (cur_bfd, *current)))
2687 {
2688 const char *name = (*current)->name;
2689
2690 if (do_demangle && name != NULL && *name != '\0')
2691 {
2692 char *alloc;
2693
2694 /* If we want to demangle the name, we demangle it
2695 here, and temporarily clobber it while calling
2696 bfd_print_symbol. FIXME: This is a gross hack. */
2697 alloc = bfd_demangle (cur_bfd, name, DMGL_ANSI | DMGL_PARAMS);
2698 if (alloc != NULL)
2699 (*current)->name = alloc;
2700 bfd_print_symbol (cur_bfd, stdout, *current,
2701 bfd_print_symbol_all);
2702 if (alloc != NULL)
2703 {
2704 (*current)->name = name;
2705 free (alloc);
2706 }
2707 }
2708 else
2709 bfd_print_symbol (cur_bfd, stdout, *current,
2710 bfd_print_symbol_all);
2711 printf ("\n");
2712 }
2713
2714 current++;
2715 }
2716 printf ("\n\n");
2717 }
2718 \f
2719 static void
2720 dump_reloc_set (bfd *abfd, asection *sec, arelent **relpp, long relcount)
2721 {
2722 arelent **p;
2723 char *last_filename, *last_functionname;
2724 unsigned int last_line;
2725
2726 /* Get column headers lined up reasonably. */
2727 {
2728 static int width;
2729
2730 if (width == 0)
2731 {
2732 char buf[30];
2733
2734 bfd_sprintf_vma (abfd, buf, (bfd_vma) -1);
2735 width = strlen (buf) - 7;
2736 }
2737 printf ("OFFSET %*s TYPE %*s VALUE \n", width, "", 12, "");
2738 }
2739
2740 last_filename = NULL;
2741 last_functionname = NULL;
2742 last_line = 0;
2743
2744 for (p = relpp; relcount && *p != NULL; p++, relcount--)
2745 {
2746 arelent *q = *p;
2747 const char *filename, *functionname;
2748 unsigned int line;
2749 const char *sym_name;
2750 const char *section_name;
2751
2752 if (start_address != (bfd_vma) -1
2753 && q->address < start_address)
2754 continue;
2755 if (stop_address != (bfd_vma) -1
2756 && q->address > stop_address)
2757 continue;
2758
2759 if (with_line_numbers
2760 && sec != NULL
2761 && bfd_find_nearest_line (abfd, sec, syms, q->address,
2762 &filename, &functionname, &line))
2763 {
2764 if (functionname != NULL
2765 && (last_functionname == NULL
2766 || strcmp (functionname, last_functionname) != 0))
2767 {
2768 printf ("%s():\n", functionname);
2769 if (last_functionname != NULL)
2770 free (last_functionname);
2771 last_functionname = xstrdup (functionname);
2772 }
2773
2774 if (line > 0
2775 && (line != last_line
2776 || (filename != NULL
2777 && last_filename != NULL
2778 && strcmp (filename, last_filename) != 0)))
2779 {
2780 printf ("%s:%u\n", filename == NULL ? "???" : filename, line);
2781 last_line = line;
2782 if (last_filename != NULL)
2783 free (last_filename);
2784 if (filename == NULL)
2785 last_filename = NULL;
2786 else
2787 last_filename = xstrdup (filename);
2788 }
2789 }
2790
2791 if (q->sym_ptr_ptr && *q->sym_ptr_ptr)
2792 {
2793 sym_name = (*(q->sym_ptr_ptr))->name;
2794 section_name = (*(q->sym_ptr_ptr))->section->name;
2795 }
2796 else
2797 {
2798 sym_name = NULL;
2799 section_name = NULL;
2800 }
2801
2802 bfd_printf_vma (abfd, q->address);
2803 if (q->howto == NULL)
2804 printf (" *unknown* ");
2805 else if (q->howto->name)
2806 printf (" %-16s ", q->howto->name);
2807 else
2808 printf (" %-16d ", q->howto->type);
2809
2810 if (sym_name)
2811 {
2812 objdump_print_symname (abfd, NULL, *q->sym_ptr_ptr);
2813 }
2814 else
2815 {
2816 if (section_name == NULL)
2817 section_name = "*unknown*";
2818 printf ("[%s]", section_name);
2819 }
2820
2821 if (q->addend)
2822 {
2823 printf ("+0x");
2824 bfd_printf_vma (abfd, q->addend);
2825 }
2826
2827 printf ("\n");
2828 }
2829 }
2830
2831 static void
2832 dump_relocs_in_section (bfd *abfd,
2833 asection *section,
2834 void *dummy ATTRIBUTE_UNUSED)
2835 {
2836 arelent **relpp;
2837 long relcount;
2838 long relsize;
2839
2840 if ( bfd_is_abs_section (section)
2841 || bfd_is_und_section (section)
2842 || bfd_is_com_section (section)
2843 || (! process_section_p (section))
2844 || ((section->flags & SEC_RELOC) == 0))
2845 return;
2846
2847 relsize = bfd_get_reloc_upper_bound (abfd, section);
2848 if (relsize < 0)
2849 bfd_fatal (bfd_get_filename (abfd));
2850
2851 printf ("RELOCATION RECORDS FOR [%s]:", section->name);
2852
2853 if (relsize == 0)
2854 {
2855 printf (" (none)\n\n");
2856 return;
2857 }
2858
2859 relpp = xmalloc (relsize);
2860 relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
2861
2862 if (relcount < 0)
2863 bfd_fatal (bfd_get_filename (abfd));
2864 else if (relcount == 0)
2865 printf (" (none)\n\n");
2866 else
2867 {
2868 printf ("\n");
2869 dump_reloc_set (abfd, section, relpp, relcount);
2870 printf ("\n\n");
2871 }
2872 free (relpp);
2873 }
2874
2875 static void
2876 dump_relocs (bfd *abfd)
2877 {
2878 bfd_map_over_sections (abfd, dump_relocs_in_section, NULL);
2879 }
2880
2881 static void
2882 dump_dynamic_relocs (bfd *abfd)
2883 {
2884 long relsize;
2885 arelent **relpp;
2886 long relcount;
2887
2888 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2889 if (relsize < 0)
2890 bfd_fatal (bfd_get_filename (abfd));
2891
2892 printf ("DYNAMIC RELOCATION RECORDS");
2893
2894 if (relsize == 0)
2895 printf (" (none)\n\n");
2896 else
2897 {
2898 relpp = xmalloc (relsize);
2899 relcount = bfd_canonicalize_dynamic_reloc (abfd, relpp, dynsyms);
2900
2901 if (relcount < 0)
2902 bfd_fatal (bfd_get_filename (abfd));
2903 else if (relcount == 0)
2904 printf (" (none)\n\n");
2905 else
2906 {
2907 printf ("\n");
2908 dump_reloc_set (abfd, NULL, relpp, relcount);
2909 printf ("\n\n");
2910 }
2911 free (relpp);
2912 }
2913 }
2914
2915 /* Creates a table of paths, to search for source files. */
2916
2917 static void
2918 add_include_path (const char *path)
2919 {
2920 if (path[0] == 0)
2921 return;
2922 include_path_count++;
2923 include_paths = xrealloc (include_paths,
2924 include_path_count * sizeof (*include_paths));
2925 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2926 if (path[1] == ':' && path[2] == 0)
2927 path = concat (path, ".", (const char *) 0);
2928 #endif
2929 include_paths[include_path_count - 1] = path;
2930 }
2931
2932 static void
2933 adjust_addresses (bfd *abfd ATTRIBUTE_UNUSED,
2934 asection *section,
2935 void *arg)
2936 {
2937 if ((section->flags & SEC_DEBUGGING) == 0)
2938 {
2939 bfd_boolean *has_reloc_p = (bfd_boolean *) arg;
2940 section->vma += adjust_section_vma;
2941 if (*has_reloc_p)
2942 section->lma += adjust_section_vma;
2943 }
2944 }
2945
2946 /* Dump selected contents of ABFD. */
2947
2948 static void
2949 dump_bfd (bfd *abfd)
2950 {
2951 /* If we are adjusting section VMA's, change them all now. Changing
2952 the BFD information is a hack. However, we must do it, or
2953 bfd_find_nearest_line will not do the right thing. */
2954 if (adjust_section_vma != 0)
2955 {
2956 bfd_boolean has_reloc = (abfd->flags & HAS_RELOC);
2957 bfd_map_over_sections (abfd, adjust_addresses, &has_reloc);
2958 }
2959
2960 if (! dump_debugging_tags)
2961 printf (_("\n%s: file format %s\n"), bfd_get_filename (abfd),
2962 abfd->xvec->name);
2963 if (dump_ar_hdrs)
2964 print_arelt_descr (stdout, abfd, TRUE);
2965 if (dump_file_header)
2966 dump_bfd_header (abfd);
2967 if (dump_private_headers)
2968 dump_bfd_private_header (abfd);
2969 if (! dump_debugging_tags)
2970 putchar ('\n');
2971 if (dump_section_headers)
2972 dump_headers (abfd);
2973
2974 if (dump_symtab
2975 || dump_reloc_info
2976 || disassemble
2977 || dump_debugging
2978 || dump_dwarf_section_info)
2979 syms = slurp_symtab (abfd);
2980 if (dump_dynamic_symtab || dump_dynamic_reloc_info
2981 || (disassemble && bfd_get_dynamic_symtab_upper_bound (abfd) > 0))
2982 dynsyms = slurp_dynamic_symtab (abfd);
2983 if (disassemble)
2984 {
2985 synthcount = bfd_get_synthetic_symtab (abfd, symcount, syms,
2986 dynsymcount, dynsyms, &synthsyms);
2987 if (synthcount < 0)
2988 synthcount = 0;
2989 }
2990
2991 if (dump_symtab)
2992 dump_symbols (abfd, FALSE);
2993 if (dump_dynamic_symtab)
2994 dump_symbols (abfd, TRUE);
2995 if (dump_dwarf_section_info)
2996 dump_dwarf (abfd);
2997 if (dump_stab_section_info)
2998 dump_stabs (abfd);
2999 if (dump_reloc_info && ! disassemble)
3000 dump_relocs (abfd);
3001 if (dump_dynamic_reloc_info && ! disassemble)
3002 dump_dynamic_relocs (abfd);
3003 if (dump_section_contents)
3004 dump_data (abfd);
3005 if (disassemble)
3006 disassemble_data (abfd);
3007
3008 if (dump_debugging)
3009 {
3010 void *dhandle;
3011
3012 dhandle = read_debugging_info (abfd, syms, symcount, TRUE);
3013 if (dhandle != NULL)
3014 {
3015 if (!print_debugging_info (stdout, dhandle, abfd, syms,
3016 bfd_demangle,
3017 dump_debugging_tags ? TRUE : FALSE))
3018 {
3019 non_fatal (_("%s: printing debugging information failed"),
3020 bfd_get_filename (abfd));
3021 exit_status = 1;
3022 }
3023 }
3024 /* PR 6483: If there was no STABS or IEEE debug
3025 info in the file, try DWARF instead. */
3026 else if (! dump_dwarf_section_info)
3027 {
3028 dump_dwarf (abfd);
3029 }
3030 }
3031
3032 if (syms)
3033 {
3034 free (syms);
3035 syms = NULL;
3036 }
3037
3038 if (dynsyms)
3039 {
3040 free (dynsyms);
3041 dynsyms = NULL;
3042 }
3043
3044 if (synthsyms)
3045 {
3046 free (synthsyms);
3047 synthsyms = NULL;
3048 }
3049
3050 symcount = 0;
3051 dynsymcount = 0;
3052 synthcount = 0;
3053 }
3054
3055 static void
3056 display_bfd (bfd *abfd)
3057 {
3058 char **matching;
3059
3060 if (bfd_check_format_matches (abfd, bfd_object, &matching))
3061 {
3062 dump_bfd (abfd);
3063 return;
3064 }
3065
3066 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3067 {
3068 nonfatal (bfd_get_filename (abfd));
3069 list_matching_formats (matching);
3070 free (matching);
3071 return;
3072 }
3073
3074 if (bfd_get_error () != bfd_error_file_not_recognized)
3075 {
3076 nonfatal (bfd_get_filename (abfd));
3077 return;
3078 }
3079
3080 if (bfd_check_format_matches (abfd, bfd_core, &matching))
3081 {
3082 dump_bfd (abfd);
3083 return;
3084 }
3085
3086 nonfatal (bfd_get_filename (abfd));
3087
3088 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3089 {
3090 list_matching_formats (matching);
3091 free (matching);
3092 }
3093 }
3094
3095 static void
3096 display_file (char *filename, char *target)
3097 {
3098 bfd *file;
3099 bfd *arfile = NULL;
3100
3101 if (get_file_size (filename) < 1)
3102 {
3103 exit_status = 1;
3104 return;
3105 }
3106
3107 file = bfd_openr (filename, target);
3108 if (file == NULL)
3109 {
3110 nonfatal (filename);
3111 return;
3112 }
3113
3114 /* If the file is an archive, process all of its elements. */
3115 if (bfd_check_format (file, bfd_archive))
3116 {
3117 bfd *last_arfile = NULL;
3118
3119 printf (_("In archive %s:\n"), bfd_get_filename (file));
3120 for (;;)
3121 {
3122 bfd_set_error (bfd_error_no_error);
3123
3124 arfile = bfd_openr_next_archived_file (file, arfile);
3125 if (arfile == NULL)
3126 {
3127 if (bfd_get_error () != bfd_error_no_more_archived_files)
3128 nonfatal (bfd_get_filename (file));
3129 break;
3130 }
3131
3132 display_bfd (arfile);
3133
3134 if (last_arfile != NULL)
3135 bfd_close (last_arfile);
3136 last_arfile = arfile;
3137 }
3138
3139 if (last_arfile != NULL)
3140 bfd_close (last_arfile);
3141 }
3142 else
3143 display_bfd (file);
3144
3145 bfd_close (file);
3146 }
3147 \f
3148 int
3149 main (int argc, char **argv)
3150 {
3151 int c;
3152 char *target = default_target;
3153 bfd_boolean seenflag = FALSE;
3154
3155 #if defined (HAVE_SETLOCALE)
3156 #if defined (HAVE_LC_MESSAGES)
3157 setlocale (LC_MESSAGES, "");
3158 #endif
3159 setlocale (LC_CTYPE, "");
3160 #endif
3161
3162 bindtextdomain (PACKAGE, LOCALEDIR);
3163 textdomain (PACKAGE);
3164
3165 program_name = *argv;
3166 xmalloc_set_program_name (program_name);
3167
3168 START_PROGRESS (program_name, 0);
3169
3170 expandargv (&argc, &argv);
3171
3172 bfd_init ();
3173 set_default_bfd_target ();
3174
3175 while ((c = getopt_long (argc, argv,
3176 "pib:m:M:VvCdDlfFaHhrRtTxsSI:j:wE:zgeGW::",
3177 long_options, (int *) 0))
3178 != EOF)
3179 {
3180 switch (c)
3181 {
3182 case 0:
3183 break; /* We've been given a long option. */
3184 case 'm':
3185 machine = optarg;
3186 break;
3187 case 'M':
3188 if (disassembler_options)
3189 /* Ignore potential memory leak for now. */
3190 disassembler_options = concat (disassembler_options, ",",
3191 optarg, (const char *) NULL);
3192 else
3193 disassembler_options = optarg;
3194 break;
3195 case 'j':
3196 if (only_used == only_size)
3197 {
3198 only_size += 8;
3199 only = xrealloc (only, only_size * sizeof (char *));
3200 }
3201 only [only_used++] = optarg;
3202 break;
3203 case 'F':
3204 display_file_offsets = TRUE;
3205 break;
3206 case 'l':
3207 with_line_numbers = TRUE;
3208 break;
3209 case 'b':
3210 target = optarg;
3211 break;
3212 case 'C':
3213 do_demangle = TRUE;
3214 if (optarg != NULL)
3215 {
3216 enum demangling_styles style;
3217
3218 style = cplus_demangle_name_to_style (optarg);
3219 if (style == unknown_demangling)
3220 fatal (_("unknown demangling style `%s'"),
3221 optarg);
3222
3223 cplus_demangle_set_style (style);
3224 }
3225 break;
3226 case 'w':
3227 wide_output = TRUE;
3228 break;
3229 case OPTION_ADJUST_VMA:
3230 adjust_section_vma = parse_vma (optarg, "--adjust-vma");
3231 break;
3232 case OPTION_START_ADDRESS:
3233 start_address = parse_vma (optarg, "--start-address");
3234 if ((stop_address != (bfd_vma) -1) && stop_address <= start_address)
3235 fatal (_("error: the start address should be before the end address"));
3236 break;
3237 case OPTION_STOP_ADDRESS:
3238 stop_address = parse_vma (optarg, "--stop-address");
3239 if ((start_address != (bfd_vma) -1) && stop_address <= start_address)
3240 fatal (_("error: the stop address should be after the start address"));
3241 break;
3242 case OPTION_PREFIX:
3243 prefix = optarg;
3244 prefix_length = strlen (prefix);
3245 /* Remove an unnecessary trailing '/' */
3246 while (IS_DIR_SEPARATOR (prefix[prefix_length - 1]))
3247 prefix_length--;
3248 break;
3249 case OPTION_PREFIX_STRIP:
3250 prefix_strip = atoi (optarg);
3251 if (prefix_strip < 0)
3252 fatal (_("error: prefix strip must be non-negative"));
3253 break;
3254 case 'E':
3255 if (strcmp (optarg, "B") == 0)
3256 endian = BFD_ENDIAN_BIG;
3257 else if (strcmp (optarg, "L") == 0)
3258 endian = BFD_ENDIAN_LITTLE;
3259 else
3260 {
3261 non_fatal (_("unrecognized -E option"));
3262 usage (stderr, 1);
3263 }
3264 break;
3265 case OPTION_ENDIAN:
3266 if (strncmp (optarg, "big", strlen (optarg)) == 0)
3267 endian = BFD_ENDIAN_BIG;
3268 else if (strncmp (optarg, "little", strlen (optarg)) == 0)
3269 endian = BFD_ENDIAN_LITTLE;
3270 else
3271 {
3272 non_fatal (_("unrecognized --endian type `%s'"), optarg);
3273 usage (stderr, 1);
3274 }
3275 break;
3276
3277 case 'f':
3278 dump_file_header = TRUE;
3279 seenflag = TRUE;
3280 break;
3281 case 'i':
3282 formats_info = TRUE;
3283 seenflag = TRUE;
3284 break;
3285 case 'I':
3286 add_include_path (optarg);
3287 break;
3288 case 'p':
3289 dump_private_headers = TRUE;
3290 seenflag = TRUE;
3291 break;
3292 case 'x':
3293 dump_private_headers = TRUE;
3294 dump_symtab = TRUE;
3295 dump_reloc_info = TRUE;
3296 dump_file_header = TRUE;
3297 dump_ar_hdrs = TRUE;
3298 dump_section_headers = TRUE;
3299 seenflag = TRUE;
3300 break;
3301 case 't':
3302 dump_symtab = TRUE;
3303 seenflag = TRUE;
3304 break;
3305 case 'T':
3306 dump_dynamic_symtab = TRUE;
3307 seenflag = TRUE;
3308 break;
3309 case 'd':
3310 disassemble = TRUE;
3311 seenflag = TRUE;
3312 break;
3313 case 'z':
3314 disassemble_zeroes = TRUE;
3315 break;
3316 case 'D':
3317 disassemble = TRUE;
3318 disassemble_all = TRUE;
3319 seenflag = TRUE;
3320 break;
3321 case 'S':
3322 disassemble = TRUE;
3323 with_source_code = TRUE;
3324 seenflag = TRUE;
3325 break;
3326 case 'g':
3327 dump_debugging = 1;
3328 seenflag = TRUE;
3329 break;
3330 case 'e':
3331 dump_debugging = 1;
3332 dump_debugging_tags = 1;
3333 do_demangle = TRUE;
3334 seenflag = TRUE;
3335 break;
3336 case 'W':
3337 dump_dwarf_section_info = TRUE;
3338 seenflag = TRUE;
3339 if (optarg)
3340 dwarf_select_sections_by_letters (optarg);
3341 else
3342 dwarf_select_sections_all ();
3343 break;
3344 case OPTION_DWARF:
3345 dump_dwarf_section_info = TRUE;
3346 seenflag = TRUE;
3347 if (optarg)
3348 dwarf_select_sections_by_names (optarg);
3349 else
3350 dwarf_select_sections_all ();
3351 break;
3352 case 'G':
3353 dump_stab_section_info = TRUE;
3354 seenflag = TRUE;
3355 break;
3356 case 's':
3357 dump_section_contents = TRUE;
3358 seenflag = TRUE;
3359 break;
3360 case 'r':
3361 dump_reloc_info = TRUE;
3362 seenflag = TRUE;
3363 break;
3364 case 'R':
3365 dump_dynamic_reloc_info = TRUE;
3366 seenflag = TRUE;
3367 break;
3368 case 'a':
3369 dump_ar_hdrs = TRUE;
3370 seenflag = TRUE;
3371 break;
3372 case 'h':
3373 dump_section_headers = TRUE;
3374 seenflag = TRUE;
3375 break;
3376 case 'H':
3377 usage (stdout, 0);
3378 seenflag = TRUE;
3379 case 'v':
3380 case 'V':
3381 show_version = TRUE;
3382 seenflag = TRUE;
3383 break;
3384
3385 default:
3386 usage (stderr, 1);
3387 }
3388 }
3389
3390 if (show_version)
3391 print_version ("objdump");
3392
3393 if (!seenflag)
3394 usage (stderr, 2);
3395
3396 if (formats_info)
3397 exit_status = display_info ();
3398 else
3399 {
3400 if (optind == argc)
3401 display_file ("a.out", target);
3402 else
3403 for (; optind < argc;)
3404 display_file (argv[optind++], target);
3405 }
3406
3407 END_PROGRESS (program_name);
3408
3409 return exit_status;
3410 }