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