* printcmd.c: define PRINTF_HAS_LONG_LONG only if not yet defined.
[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
1376 bfd_sprintf_vma (aux->abfd, buf, section->vma + section->size / opb);
1377
1378 while (buf[skip_addr_chars] == '0')
1379 ++skip_addr_chars;
1380
1381 /* Don't discard zeros on overflow. */
1382 if (buf[skip_addr_chars] == '\0' && section->vma != 0)
1383 skip_addr_chars = 0;
1384
1385 if (skip_addr_chars != 0)
1386 skip_addr_chars = (skip_addr_chars - 1) & -4;
1387 }
1388
1389 info->insn_info_valid = 0;
1390
1391 done_dot = FALSE;
1392 addr_offset = start_offset;
1393 while (addr_offset < stop_offset)
1394 {
1395 bfd_vma z;
1396 bfd_boolean need_nl = FALSE;
1397 int previous_octets;
1398
1399 /* Remember the length of the previous instruction. */
1400 previous_octets = octets;
1401 octets = 0;
1402
1403 /* If we see more than SKIP_ZEROES octets of zeroes, we just
1404 print `...'. */
1405 for (z = addr_offset * opb; z < stop_offset * opb; z++)
1406 if (data[z] != 0)
1407 break;
1408 if (! disassemble_zeroes
1409 && (info->insn_info_valid == 0
1410 || info->branch_delay_insns == 0)
1411 && (z - addr_offset * opb >= skip_zeroes
1412 || (z == stop_offset * opb &&
1413 z - addr_offset * opb < skip_zeroes_at_end)))
1414 {
1415 /* If there are more nonzero octets to follow, we only skip
1416 zeroes in multiples of 4, to try to avoid running over
1417 the start of an instruction which happens to start with
1418 zero. */
1419 if (z != stop_offset * opb)
1420 z = addr_offset * opb + ((z - addr_offset * opb) &~ 3);
1421
1422 octets = z - addr_offset * opb;
1423
1424 /* If we are going to display more data, and we are displaying
1425 file offsets, then tell the user how many zeroes we skip
1426 and the file offset from where we resume dumping. */
1427 if (display_file_offsets && ((addr_offset + (octets / opb)) < stop_offset))
1428 printf ("\t... (skipping %d zeroes, resuming at file offset: 0x%lx)\n",
1429 octets / opb,
1430 (unsigned long) (section->filepos
1431 + (addr_offset + (octets / opb))));
1432 else
1433 printf ("\t...\n");
1434 }
1435 else
1436 {
1437 char buf[50];
1438 int bpc = 0;
1439 int pb = 0;
1440
1441 done_dot = FALSE;
1442
1443 if (with_line_numbers || with_source_code)
1444 show_line (aux->abfd, section, addr_offset);
1445
1446 if (! prefix_addresses)
1447 {
1448 char *s;
1449
1450 bfd_sprintf_vma (aux->abfd, buf, section->vma + addr_offset);
1451 for (s = buf + skip_addr_chars; *s == '0'; s++)
1452 *s = ' ';
1453 if (*s == '\0')
1454 *--s = '0';
1455 printf ("%s:\t", buf + skip_addr_chars);
1456 }
1457 else
1458 {
1459 aux->require_sec = TRUE;
1460 objdump_print_address (section->vma + addr_offset, info);
1461 aux->require_sec = FALSE;
1462 putchar (' ');
1463 }
1464
1465 if (insns)
1466 {
1467 sfile.pos = 0;
1468 info->fprintf_func = (fprintf_ftype) objdump_sprintf;
1469 info->stream = &sfile;
1470 info->bytes_per_line = 0;
1471 info->bytes_per_chunk = 0;
1472 info->flags = 0;
1473
1474 if (info->disassembler_needs_relocs
1475 && (bfd_get_file_flags (aux->abfd) & EXEC_P) == 0
1476 && (bfd_get_file_flags (aux->abfd) & DYNAMIC) == 0
1477 && *relppp < relppend)
1478 {
1479 bfd_signed_vma distance_to_rel;
1480
1481 distance_to_rel = (**relppp)->address
1482 - (rel_offset + addr_offset);
1483
1484 /* Check to see if the current reloc is associated with
1485 the instruction that we are about to disassemble. */
1486 if (distance_to_rel == 0
1487 /* FIXME: This is wrong. We are trying to catch
1488 relocs that are addressed part way through the
1489 current instruction, as might happen with a packed
1490 VLIW instruction. Unfortunately we do not know the
1491 length of the current instruction since we have not
1492 disassembled it yet. Instead we take a guess based
1493 upon the length of the previous instruction. The
1494 proper solution is to have a new target-specific
1495 disassembler function which just returns the length
1496 of an instruction at a given address without trying
1497 to display its disassembly. */
1498 || (distance_to_rel > 0
1499 && distance_to_rel < (bfd_signed_vma) (previous_octets/ opb)))
1500 {
1501 info->flags = INSN_HAS_RELOC;
1502 aux->reloc = **relppp;
1503 }
1504 else
1505 aux->reloc = NULL;
1506 }
1507
1508 octets = (*disassemble_fn) (section->vma + addr_offset, info);
1509 info->fprintf_func = (fprintf_ftype) fprintf;
1510 info->stream = stdout;
1511 if (info->bytes_per_line != 0)
1512 octets_per_line = info->bytes_per_line;
1513 if (octets < 0)
1514 {
1515 if (sfile.pos)
1516 printf ("%s\n", sfile.buffer);
1517 break;
1518 }
1519 }
1520 else
1521 {
1522 bfd_vma j;
1523
1524 octets = octets_per_line;
1525 if (addr_offset + octets / opb > stop_offset)
1526 octets = (stop_offset - addr_offset) * opb;
1527
1528 for (j = addr_offset * opb; j < addr_offset * opb + octets; ++j)
1529 {
1530 if (ISPRINT (data[j]))
1531 buf[j - addr_offset * opb] = data[j];
1532 else
1533 buf[j - addr_offset * opb] = '.';
1534 }
1535 buf[j - addr_offset * opb] = '\0';
1536 }
1537
1538 if (prefix_addresses
1539 ? show_raw_insn > 0
1540 : show_raw_insn >= 0)
1541 {
1542 bfd_vma j;
1543
1544 /* If ! prefix_addresses and ! wide_output, we print
1545 octets_per_line octets per line. */
1546 pb = octets;
1547 if (pb > octets_per_line && ! prefix_addresses && ! wide_output)
1548 pb = octets_per_line;
1549
1550 if (info->bytes_per_chunk)
1551 bpc = info->bytes_per_chunk;
1552 else
1553 bpc = 1;
1554
1555 for (j = addr_offset * opb; j < addr_offset * opb + pb; j += bpc)
1556 {
1557 int k;
1558
1559 if (bpc > 1 && info->display_endian == BFD_ENDIAN_LITTLE)
1560 {
1561 for (k = bpc - 1; k >= 0; k--)
1562 printf ("%02x", (unsigned) data[j + k]);
1563 putchar (' ');
1564 }
1565 else
1566 {
1567 for (k = 0; k < bpc; k++)
1568 printf ("%02x", (unsigned) data[j + k]);
1569 putchar (' ');
1570 }
1571 }
1572
1573 for (; pb < octets_per_line; pb += bpc)
1574 {
1575 int k;
1576
1577 for (k = 0; k < bpc; k++)
1578 printf (" ");
1579 putchar (' ');
1580 }
1581
1582 /* Separate raw data from instruction by extra space. */
1583 if (insns)
1584 putchar ('\t');
1585 else
1586 printf (" ");
1587 }
1588
1589 if (! insns)
1590 printf ("%s", buf);
1591 else if (sfile.pos)
1592 printf ("%s", sfile.buffer);
1593
1594 if (prefix_addresses
1595 ? show_raw_insn > 0
1596 : show_raw_insn >= 0)
1597 {
1598 while (pb < octets)
1599 {
1600 bfd_vma j;
1601 char *s;
1602
1603 putchar ('\n');
1604 j = addr_offset * opb + pb;
1605
1606 bfd_sprintf_vma (aux->abfd, buf, section->vma + j / opb);
1607 for (s = buf + skip_addr_chars; *s == '0'; s++)
1608 *s = ' ';
1609 if (*s == '\0')
1610 *--s = '0';
1611 printf ("%s:\t", buf + skip_addr_chars);
1612
1613 pb += octets_per_line;
1614 if (pb > octets)
1615 pb = octets;
1616 for (; j < addr_offset * opb + pb; j += bpc)
1617 {
1618 int k;
1619
1620 if (bpc > 1 && info->display_endian == BFD_ENDIAN_LITTLE)
1621 {
1622 for (k = bpc - 1; k >= 0; k--)
1623 printf ("%02x", (unsigned) data[j + k]);
1624 putchar (' ');
1625 }
1626 else
1627 {
1628 for (k = 0; k < bpc; k++)
1629 printf ("%02x", (unsigned) data[j + k]);
1630 putchar (' ');
1631 }
1632 }
1633 }
1634 }
1635
1636 if (!wide_output)
1637 putchar ('\n');
1638 else
1639 need_nl = TRUE;
1640 }
1641
1642 while ((*relppp) < relppend
1643 && (**relppp)->address < rel_offset + addr_offset + octets / opb)
1644 {
1645 if (dump_reloc_info || dump_dynamic_reloc_info)
1646 {
1647 arelent *q;
1648
1649 q = **relppp;
1650
1651 if (wide_output)
1652 putchar ('\t');
1653 else
1654 printf ("\t\t\t");
1655
1656 objdump_print_value (section->vma - rel_offset + q->address,
1657 info, TRUE);
1658
1659 if (q->howto == NULL)
1660 printf (": *unknown*\t");
1661 else if (q->howto->name)
1662 printf (": %s\t", q->howto->name);
1663 else
1664 printf (": %d\t", q->howto->type);
1665
1666 if (q->sym_ptr_ptr == NULL || *q->sym_ptr_ptr == NULL)
1667 printf ("*unknown*");
1668 else
1669 {
1670 const char *sym_name;
1671
1672 sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
1673 if (sym_name != NULL && *sym_name != '\0')
1674 objdump_print_symname (aux->abfd, info, *q->sym_ptr_ptr);
1675 else
1676 {
1677 asection *sym_sec;
1678
1679 sym_sec = bfd_get_section (*q->sym_ptr_ptr);
1680 sym_name = bfd_get_section_name (aux->abfd, sym_sec);
1681 if (sym_name == NULL || *sym_name == '\0')
1682 sym_name = "*unknown*";
1683 printf ("%s", sym_name);
1684 }
1685 }
1686
1687 if (q->addend)
1688 {
1689 printf ("+0x");
1690 objdump_print_value (q->addend, info, TRUE);
1691 }
1692
1693 printf ("\n");
1694 need_nl = FALSE;
1695 }
1696 ++(*relppp);
1697 }
1698
1699 if (need_nl)
1700 printf ("\n");
1701
1702 addr_offset += octets / opb;
1703 }
1704
1705 free (sfile.buffer);
1706 }
1707
1708 static void
1709 disassemble_section (bfd *abfd, asection *section, void *info)
1710 {
1711 struct disassemble_info * pinfo = (struct disassemble_info *) info;
1712 struct objdump_disasm_info * paux;
1713 unsigned int opb = pinfo->octets_per_byte;
1714 bfd_byte * data = NULL;
1715 bfd_size_type datasize = 0;
1716 arelent ** rel_pp = NULL;
1717 arelent ** rel_ppstart = NULL;
1718 arelent ** rel_ppend;
1719 unsigned long stop_offset;
1720 asymbol * sym = NULL;
1721 long place = 0;
1722 long rel_count;
1723 bfd_vma rel_offset;
1724 unsigned long addr_offset;
1725
1726 /* Sections that do not contain machine
1727 code are not normally disassembled. */
1728 if (! disassemble_all
1729 && only == NULL
1730 && ((section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
1731 != (SEC_CODE | SEC_HAS_CONTENTS)))
1732 return;
1733
1734 if (! process_section_p (section))
1735 return;
1736
1737 datasize = bfd_get_section_size (section);
1738 if (datasize == 0)
1739 return;
1740
1741 /* Decide which set of relocs to use. Load them if necessary. */
1742 paux = (struct objdump_disasm_info *) pinfo->application_data;
1743 if (paux->dynrelbuf)
1744 {
1745 rel_pp = paux->dynrelbuf;
1746 rel_count = paux->dynrelcount;
1747 /* Dynamic reloc addresses are absolute, non-dynamic are section
1748 relative. REL_OFFSET specifies the reloc address corresponding
1749 to the start of this section. */
1750 rel_offset = section->vma;
1751 }
1752 else
1753 {
1754 rel_count = 0;
1755 rel_pp = NULL;
1756 rel_offset = 0;
1757
1758 if ((section->flags & SEC_RELOC) != 0
1759 && (dump_reloc_info || pinfo->disassembler_needs_relocs))
1760 {
1761 long relsize;
1762
1763 relsize = bfd_get_reloc_upper_bound (abfd, section);
1764 if (relsize < 0)
1765 bfd_fatal (bfd_get_filename (abfd));
1766
1767 if (relsize > 0)
1768 {
1769 rel_ppstart = rel_pp = xmalloc (relsize);
1770 rel_count = bfd_canonicalize_reloc (abfd, section, rel_pp, syms);
1771 if (rel_count < 0)
1772 bfd_fatal (bfd_get_filename (abfd));
1773
1774 /* Sort the relocs by address. */
1775 qsort (rel_pp, rel_count, sizeof (arelent *), compare_relocs);
1776 }
1777 }
1778
1779 }
1780 rel_ppend = rel_pp + rel_count;
1781
1782 data = xmalloc (datasize);
1783
1784 bfd_get_section_contents (abfd, section, data, 0, datasize);
1785
1786 paux->sec = section;
1787 pinfo->buffer = data;
1788 pinfo->buffer_vma = section->vma;
1789 pinfo->buffer_length = datasize;
1790 pinfo->section = section;
1791
1792 if (start_address == (bfd_vma) -1
1793 || start_address < pinfo->buffer_vma)
1794 addr_offset = 0;
1795 else
1796 addr_offset = start_address - pinfo->buffer_vma;
1797
1798 if (stop_address == (bfd_vma) -1)
1799 stop_offset = datasize / opb;
1800 else
1801 {
1802 if (stop_address < pinfo->buffer_vma)
1803 stop_offset = 0;
1804 else
1805 stop_offset = stop_address - pinfo->buffer_vma;
1806 if (stop_offset > pinfo->buffer_length / opb)
1807 stop_offset = pinfo->buffer_length / opb;
1808 }
1809
1810 /* Skip over the relocs belonging to addresses below the
1811 start address. */
1812 while (rel_pp < rel_ppend
1813 && (*rel_pp)->address < rel_offset + addr_offset)
1814 ++rel_pp;
1815
1816 if (addr_offset < stop_offset)
1817 printf (_("\nDisassembly of section %s:\n"), section->name);
1818
1819 /* Find the nearest symbol forwards from our current position. */
1820 paux->require_sec = TRUE;
1821 sym = find_symbol_for_address (section->vma + addr_offset, info, &place);
1822 paux->require_sec = FALSE;
1823
1824 /* Disassemble a block of instructions up to the address associated with
1825 the symbol we have just found. Then print the symbol and find the
1826 next symbol on. Repeat until we have disassembled the entire section
1827 or we have reached the end of the address range we are interested in. */
1828 while (addr_offset < stop_offset)
1829 {
1830 bfd_vma addr;
1831 asymbol *nextsym;
1832 unsigned long nextstop_offset;
1833 bfd_boolean insns;
1834
1835 addr = section->vma + addr_offset;
1836
1837 if (sym != NULL && bfd_asymbol_value (sym) <= addr)
1838 {
1839 int x;
1840
1841 for (x = place;
1842 (x < sorted_symcount
1843 && (bfd_asymbol_value (sorted_syms[x]) <= addr));
1844 ++x)
1845 continue;
1846
1847 pinfo->symbols = sorted_syms + place;
1848 pinfo->num_symbols = x - place;
1849 pinfo->symtab_pos = place;
1850 }
1851 else
1852 {
1853 pinfo->symbols = NULL;
1854 pinfo->num_symbols = 0;
1855 pinfo->symtab_pos = -1;
1856 }
1857
1858 if (! prefix_addresses)
1859 {
1860 pinfo->fprintf_func (pinfo->stream, "\n");
1861 objdump_print_addr_with_sym (abfd, section, sym, addr,
1862 pinfo, FALSE);
1863 pinfo->fprintf_func (pinfo->stream, ":\n");
1864 }
1865
1866 if (sym != NULL && bfd_asymbol_value (sym) > addr)
1867 nextsym = sym;
1868 else if (sym == NULL)
1869 nextsym = NULL;
1870 else
1871 {
1872 #define is_valid_next_sym(SYM) \
1873 ((SYM)->section == section \
1874 && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
1875 && pinfo->symbol_is_valid (SYM, pinfo))
1876
1877 /* Search forward for the next appropriate symbol in
1878 SECTION. Note that all the symbols are sorted
1879 together into one big array, and that some sections
1880 may have overlapping addresses. */
1881 while (place < sorted_symcount
1882 && ! is_valid_next_sym (sorted_syms [place]))
1883 ++place;
1884
1885 if (place >= sorted_symcount)
1886 nextsym = NULL;
1887 else
1888 nextsym = sorted_syms[place];
1889 }
1890
1891 if (sym != NULL && bfd_asymbol_value (sym) > addr)
1892 nextstop_offset = bfd_asymbol_value (sym) - section->vma;
1893 else if (nextsym == NULL)
1894 nextstop_offset = stop_offset;
1895 else
1896 nextstop_offset = bfd_asymbol_value (nextsym) - section->vma;
1897
1898 if (nextstop_offset > stop_offset)
1899 nextstop_offset = stop_offset;
1900
1901 /* If a symbol is explicitly marked as being an object
1902 rather than a function, just dump the bytes without
1903 disassembling them. */
1904 if (disassemble_all
1905 || sym == NULL
1906 || bfd_asymbol_value (sym) > addr
1907 || ((sym->flags & BSF_OBJECT) == 0
1908 && (strstr (bfd_asymbol_name (sym), "gnu_compiled")
1909 == NULL)
1910 && (strstr (bfd_asymbol_name (sym), "gcc2_compiled")
1911 == NULL))
1912 || (sym->flags & BSF_FUNCTION) != 0)
1913 insns = TRUE;
1914 else
1915 insns = FALSE;
1916
1917 disassemble_bytes (pinfo, paux->disassemble_fn, insns, data,
1918 addr_offset, nextstop_offset,
1919 rel_offset, &rel_pp, rel_ppend);
1920
1921 addr_offset = nextstop_offset;
1922 sym = nextsym;
1923 }
1924
1925 free (data);
1926
1927 if (rel_ppstart != NULL)
1928 free (rel_ppstart);
1929 }
1930
1931 /* Disassemble the contents of an object file. */
1932
1933 static void
1934 disassemble_data (bfd *abfd)
1935 {
1936 struct disassemble_info disasm_info;
1937 struct objdump_disasm_info aux;
1938 long i;
1939
1940 print_files = NULL;
1941 prev_functionname = NULL;
1942 prev_line = -1;
1943
1944 /* We make a copy of syms to sort. We don't want to sort syms
1945 because that will screw up the relocs. */
1946 sorted_symcount = symcount ? symcount : dynsymcount;
1947 sorted_syms = xmalloc ((sorted_symcount + synthcount) * sizeof (asymbol *));
1948 memcpy (sorted_syms, symcount ? syms : dynsyms,
1949 sorted_symcount * sizeof (asymbol *));
1950
1951 sorted_symcount = remove_useless_symbols (sorted_syms, sorted_symcount);
1952
1953 for (i = 0; i < synthcount; ++i)
1954 {
1955 sorted_syms[sorted_symcount] = synthsyms + i;
1956 ++sorted_symcount;
1957 }
1958
1959 /* Sort the symbols into section and symbol order. */
1960 qsort (sorted_syms, sorted_symcount, sizeof (asymbol *), compare_symbols);
1961
1962 init_disassemble_info (&disasm_info, stdout, (fprintf_ftype) fprintf);
1963
1964 disasm_info.application_data = (void *) &aux;
1965 aux.abfd = abfd;
1966 aux.require_sec = FALSE;
1967 aux.dynrelbuf = NULL;
1968 aux.dynrelcount = 0;
1969 aux.reloc = NULL;
1970
1971 disasm_info.print_address_func = objdump_print_address;
1972 disasm_info.symbol_at_address_func = objdump_symbol_at_address;
1973
1974 if (machine != NULL)
1975 {
1976 const bfd_arch_info_type *info = bfd_scan_arch (machine);
1977
1978 if (info == NULL)
1979 fatal (_("Can't use supplied machine %s"), machine);
1980
1981 abfd->arch_info = info;
1982 }
1983
1984 if (endian != BFD_ENDIAN_UNKNOWN)
1985 {
1986 struct bfd_target *xvec;
1987
1988 xvec = xmalloc (sizeof (struct bfd_target));
1989 memcpy (xvec, abfd->xvec, sizeof (struct bfd_target));
1990 xvec->byteorder = endian;
1991 abfd->xvec = xvec;
1992 }
1993
1994 /* Use libopcodes to locate a suitable disassembler. */
1995 aux.disassemble_fn = disassembler (abfd);
1996 if (!aux.disassemble_fn)
1997 {
1998 non_fatal (_("Can't disassemble for architecture %s\n"),
1999 bfd_printable_arch_mach (bfd_get_arch (abfd), 0));
2000 exit_status = 1;
2001 return;
2002 }
2003
2004 disasm_info.flavour = bfd_get_flavour (abfd);
2005 disasm_info.arch = bfd_get_arch (abfd);
2006 disasm_info.mach = bfd_get_mach (abfd);
2007 disasm_info.disassembler_options = disassembler_options;
2008 disasm_info.octets_per_byte = bfd_octets_per_byte (abfd);
2009 disasm_info.skip_zeroes = DEFAULT_SKIP_ZEROES;
2010 disasm_info.skip_zeroes_at_end = DEFAULT_SKIP_ZEROES_AT_END;
2011 disasm_info.disassembler_needs_relocs = FALSE;
2012
2013 if (bfd_big_endian (abfd))
2014 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_BIG;
2015 else if (bfd_little_endian (abfd))
2016 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_LITTLE;
2017 else
2018 /* ??? Aborting here seems too drastic. We could default to big or little
2019 instead. */
2020 disasm_info.endian = BFD_ENDIAN_UNKNOWN;
2021
2022 /* Allow the target to customize the info structure. */
2023 disassemble_init_for_target (& disasm_info);
2024
2025 /* Pre-load the dynamic relocs if we are going
2026 to be dumping them along with the disassembly. */
2027 if (dump_dynamic_reloc_info)
2028 {
2029 long relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2030
2031 if (relsize < 0)
2032 bfd_fatal (bfd_get_filename (abfd));
2033
2034 if (relsize > 0)
2035 {
2036 aux.dynrelbuf = xmalloc (relsize);
2037 aux.dynrelcount = bfd_canonicalize_dynamic_reloc (abfd,
2038 aux.dynrelbuf,
2039 dynsyms);
2040 if (aux.dynrelcount < 0)
2041 bfd_fatal (bfd_get_filename (abfd));
2042
2043 /* Sort the relocs by address. */
2044 qsort (aux.dynrelbuf, aux.dynrelcount, sizeof (arelent *),
2045 compare_relocs);
2046 }
2047 }
2048 disasm_info.symtab = sorted_syms;
2049 disasm_info.symtab_size = sorted_symcount;
2050
2051 bfd_map_over_sections (abfd, disassemble_section, & disasm_info);
2052
2053 if (aux.dynrelbuf != NULL)
2054 free (aux.dynrelbuf);
2055 free (sorted_syms);
2056 }
2057 \f
2058 int
2059 load_debug_section (enum dwarf_section_display_enum debug, void *file)
2060 {
2061 struct dwarf_section *section = &debug_displays [debug].section;
2062 bfd *abfd = file;
2063 asection *sec;
2064 bfd_boolean ret;
2065 int section_is_compressed;
2066
2067 /* If it is already loaded, do nothing. */
2068 if (section->start != NULL)
2069 return 1;
2070
2071 /* Locate the debug section. */
2072 sec = bfd_get_section_by_name (abfd, section->uncompressed_name);
2073 if (sec != NULL)
2074 section->name = section->uncompressed_name;
2075 else
2076 {
2077 sec = bfd_get_section_by_name (abfd, section->compressed_name);
2078 if (sec != NULL)
2079 section->name = section->compressed_name;
2080 }
2081 if (sec == NULL)
2082 return 0;
2083 section_is_compressed = section->name == section->compressed_name;
2084
2085 /* Compute a bias to be added to offsets found within the DWARF debug
2086 information. These offsets are meant to be relative to the start of
2087 the dwarf section, and hence the bias should be 0. For MACH-O however
2088 a dwarf section is really just a region of a much larger section and so
2089 the bias is the address of the start of that area within the larger
2090 section. This test is important for PE and COFF based targets which
2091 use DWARF debug information, since unlike ELF, they do not allow the
2092 dwarf sections to be placed at address 0. */
2093 if (bfd_get_flavour (abfd) == bfd_target_mach_o_flavour)
2094 section->address = bfd_get_section_vma (abfd, sec);
2095 else
2096 section->address = 0;
2097
2098 section->size = bfd_get_section_size (sec);
2099 section->start = xmalloc (section->size);
2100
2101 if (is_relocatable && debug_displays [debug].relocate)
2102 ret = bfd_simple_get_relocated_section_contents (abfd,
2103 sec,
2104 section->start,
2105 syms) != NULL;
2106 else
2107 ret = bfd_get_section_contents (abfd, sec, section->start, 0,
2108 section->size);
2109
2110 if (! ret)
2111 {
2112 free_debug_section (debug);
2113 printf (_("\nCan't get contents for section '%s'.\n"),
2114 section->name);
2115 return 0;
2116 }
2117
2118 if (section_is_compressed)
2119 {
2120 bfd_size_type size = section->size;
2121 if (! bfd_uncompress_section_contents (&section->start, &size))
2122 {
2123 free_debug_section (debug);
2124 printf (_("\nCan't uncompress section '%s'.\n"), section->name);
2125 return 0;
2126 }
2127 section->size = size;
2128 }
2129
2130 return ret;
2131 }
2132
2133 void
2134 free_debug_section (enum dwarf_section_display_enum debug)
2135 {
2136 struct dwarf_section *section = &debug_displays [debug].section;
2137
2138 if (section->start == NULL)
2139 return;
2140
2141 free ((char *) section->start);
2142 section->start = NULL;
2143 section->address = 0;
2144 section->size = 0;
2145 }
2146
2147 static void
2148 dump_dwarf_section (bfd *abfd, asection *section,
2149 void *arg ATTRIBUTE_UNUSED)
2150 {
2151 const char *name = bfd_get_section_name (abfd, section);
2152 const char *match;
2153 enum dwarf_section_display_enum i;
2154
2155 if (CONST_STRNEQ (name, ".gnu.linkonce.wi."))
2156 match = ".debug_info";
2157 else
2158 match = name;
2159
2160 for (i = 0; i < max; i++)
2161 if (strcmp (debug_displays [i].section.uncompressed_name, match) == 0
2162 || strcmp (debug_displays [i].section.compressed_name, match) == 0)
2163 {
2164 if (!debug_displays [i].eh_frame)
2165 {
2166 struct dwarf_section *sec = &debug_displays [i].section;
2167
2168 if (load_debug_section (i, abfd))
2169 {
2170 debug_displays [i].display (sec, abfd);
2171
2172 if (i != info && i != abbrev)
2173 free_debug_section (i);
2174 }
2175 }
2176 break;
2177 }
2178 }
2179
2180 static const char *mach_o_uncompressed_dwarf_sections [] = {
2181 "LC_SEGMENT.__DWARFA.__debug_abbrev", /* .debug_abbrev */
2182 "LC_SEGMENT.__DWARFA.__debug_aranges", /* .debug_aranges */
2183 "LC_SEGMENT.__DWARFA.__debug_frame", /* .debug_frame */
2184 "LC_SEGMENT.__DWARFA.__debug_info", /* .debug_info */
2185 "LC_SEGMENT.__DWARFA.__debug_line", /* .debug_line */
2186 "LC_SEGMENT.__DWARFA.__debug_pubnames", /* .debug_pubnames */
2187 ".eh_frame", /* .eh_frame */
2188 "LC_SEGMENT.__DWARFA.__debug_macinfo", /* .debug_macinfo */
2189 "LC_SEGMENT.__DWARFA.__debug_str", /* .debug_str */
2190 "LC_SEGMENT.__DWARFA.__debug_loc", /* .debug_loc */
2191 "LC_SEGMENT.__DWARFA.__debug_pubtypes", /* .debug_pubtypes */
2192 "LC_SEGMENT.__DWARFA.__debug_ranges", /* .debug_ranges */
2193 "LC_SEGMENT.__DWARFA.__debug_static_func", /* .debug_static_func */
2194 "LC_SEGMENT.__DWARFA.__debug_static_vars", /* .debug_static_vars */
2195 "LC_SEGMENT.__DWARFA.__debug_types", /* .debug_types */
2196 "LC_SEGMENT.__DWARFA.__debug_weaknames" /* .debug_weaknames */
2197 };
2198
2199 static const char *mach_o_compressed_dwarf_sections [] = {
2200 "LC_SEGMENT.__DWARFA.__zdebug_abbrev", /* .zdebug_abbrev */
2201 "LC_SEGMENT.__DWARFA.__zdebug_aranges", /* .zdebug_aranges */
2202 "LC_SEGMENT.__DWARFA.__zdebug_frame", /* .zdebug_frame */
2203 "LC_SEGMENT.__DWARFA.__zdebug_info", /* .zdebug_info */
2204 "LC_SEGMENT.__DWARFA.__zdebug_line", /* .zdebug_line */
2205 "LC_SEGMENT.__DWARFA.__zdebug_pubnames", /* .zdebug_pubnames */
2206 ".eh_frame", /* .eh_frame */
2207 "LC_SEGMENT.__DWARFA.__zdebug_macinfo", /* .zdebug_macinfo */
2208 "LC_SEGMENT.__DWARFA.__zdebug_str", /* .zdebug_str */
2209 "LC_SEGMENT.__DWARFA.__zdebug_loc", /* .zdebug_loc */
2210 "LC_SEGMENT.__DWARFA.__zdebug_pubtypes", /* .zdebug_pubtypes */
2211 "LC_SEGMENT.__DWARFA.__zdebug_ranges", /* .zdebug_ranges */
2212 "LC_SEGMENT.__DWARFA.__zdebug_static_func", /* .zdebug_static_func */
2213 "LC_SEGMENT.__DWARFA.__zdebug_static_vars", /* .zdebug_static_vars */
2214 "LC_SEGMENT.__DWARFA.__zdebug_types", /* .zdebug_types */
2215 "LC_SEGMENT.__DWARFA.__zdebug_weaknames" /* .zdebug_weaknames */
2216 };
2217
2218 static const char *generic_uncompressed_dwarf_sections [max];
2219 static const char *generic_compressed_dwarf_sections [max];
2220
2221 static void
2222 check_mach_o_dwarf (bfd *abfd)
2223 {
2224 static enum bfd_flavour old_flavour = bfd_target_unknown_flavour;
2225 enum bfd_flavour current_flavour = bfd_get_flavour (abfd);
2226 enum dwarf_section_display_enum i;
2227
2228 if (generic_uncompressed_dwarf_sections [0] == NULL)
2229 for (i = 0; i < max; i++)
2230 {
2231 generic_uncompressed_dwarf_sections [i]
2232 = debug_displays[i].section.uncompressed_name;
2233 generic_compressed_dwarf_sections [i]
2234 = debug_displays[i].section.compressed_name;
2235 }
2236
2237 if (old_flavour != current_flavour)
2238 {
2239 if (current_flavour == bfd_target_mach_o_flavour)
2240 for (i = 0; i < max; i++)
2241 {
2242 debug_displays[i].section.uncompressed_name
2243 = mach_o_uncompressed_dwarf_sections [i];
2244 debug_displays[i].section.compressed_name
2245 = mach_o_compressed_dwarf_sections [i];
2246 }
2247 else if (old_flavour == bfd_target_mach_o_flavour)
2248 for (i = 0; i < max; i++)
2249 {
2250 debug_displays[i].section.uncompressed_name
2251 = generic_uncompressed_dwarf_sections [i];
2252 debug_displays[i].section.compressed_name
2253 = generic_compressed_dwarf_sections [i];
2254 }
2255
2256 old_flavour = current_flavour;
2257 }
2258 }
2259
2260 /* Dump the dwarf debugging information. */
2261
2262 static void
2263 dump_dwarf (bfd *abfd)
2264 {
2265 is_relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2266
2267 /* FIXME: bfd_get_arch_size may return -1. We assume that 64bit
2268 targets will return 64. */
2269 eh_addr_size = bfd_get_arch_size (abfd) == 64 ? 8 : 4;
2270
2271 if (bfd_big_endian (abfd))
2272 byte_get = byte_get_big_endian;
2273 else if (bfd_little_endian (abfd))
2274 byte_get = byte_get_little_endian;
2275 else
2276 abort ();
2277
2278 check_mach_o_dwarf (abfd);
2279
2280 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
2281 {
2282 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2283 init_dwarf_regnames (bed->elf_machine_code);
2284 }
2285
2286 bfd_map_over_sections (abfd, dump_dwarf_section, NULL);
2287
2288 free_debug_memory ();
2289 }
2290 \f
2291 /* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
2292 it. Return NULL on failure. */
2293
2294 static char *
2295 read_section_stabs (bfd *abfd, const char *sect_name, bfd_size_type *size_ptr)
2296 {
2297 asection *stabsect;
2298 bfd_size_type size;
2299 char *contents;
2300
2301 stabsect = bfd_get_section_by_name (abfd, sect_name);
2302 if (stabsect == NULL)
2303 {
2304 printf (_("No %s section present\n\n"), sect_name);
2305 return FALSE;
2306 }
2307
2308 size = bfd_section_size (abfd, stabsect);
2309 contents = xmalloc (size);
2310
2311 if (! bfd_get_section_contents (abfd, stabsect, contents, 0, size))
2312 {
2313 non_fatal (_("Reading %s section of %s failed: %s"),
2314 sect_name, bfd_get_filename (abfd),
2315 bfd_errmsg (bfd_get_error ()));
2316 free (contents);
2317 exit_status = 1;
2318 return NULL;
2319 }
2320
2321 *size_ptr = size;
2322
2323 return contents;
2324 }
2325
2326 /* Stabs entries use a 12 byte format:
2327 4 byte string table index
2328 1 byte stab type
2329 1 byte stab other field
2330 2 byte stab desc field
2331 4 byte stab value
2332 FIXME: This will have to change for a 64 bit object format. */
2333
2334 #define STRDXOFF (0)
2335 #define TYPEOFF (4)
2336 #define OTHEROFF (5)
2337 #define DESCOFF (6)
2338 #define VALOFF (8)
2339 #define STABSIZE (12)
2340
2341 /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
2342 using string table section STRSECT_NAME (in `strtab'). */
2343
2344 static void
2345 print_section_stabs (bfd *abfd,
2346 const char *stabsect_name,
2347 unsigned *string_offset_ptr)
2348 {
2349 int i;
2350 unsigned file_string_table_offset = 0;
2351 unsigned next_file_string_table_offset = *string_offset_ptr;
2352 bfd_byte *stabp, *stabs_end;
2353
2354 stabp = stabs;
2355 stabs_end = stabp + stab_size;
2356
2357 printf (_("Contents of %s section:\n\n"), stabsect_name);
2358 printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
2359
2360 /* Loop through all symbols and print them.
2361
2362 We start the index at -1 because there is a dummy symbol on
2363 the front of stabs-in-{coff,elf} sections that supplies sizes. */
2364 for (i = -1; stabp < stabs_end; stabp += STABSIZE, i++)
2365 {
2366 const char *name;
2367 unsigned long strx;
2368 unsigned char type, other;
2369 unsigned short desc;
2370 bfd_vma value;
2371
2372 strx = bfd_h_get_32 (abfd, stabp + STRDXOFF);
2373 type = bfd_h_get_8 (abfd, stabp + TYPEOFF);
2374 other = bfd_h_get_8 (abfd, stabp + OTHEROFF);
2375 desc = bfd_h_get_16 (abfd, stabp + DESCOFF);
2376 value = bfd_h_get_32 (abfd, stabp + VALOFF);
2377
2378 printf ("\n%-6d ", i);
2379 /* Either print the stab name, or, if unnamed, print its number
2380 again (makes consistent formatting for tools like awk). */
2381 name = bfd_get_stab_name (type);
2382 if (name != NULL)
2383 printf ("%-6s", name);
2384 else if (type == N_UNDF)
2385 printf ("HdrSym");
2386 else
2387 printf ("%-6d", type);
2388 printf (" %-6d %-6d ", other, desc);
2389 bfd_printf_vma (abfd, value);
2390 printf (" %-6lu", strx);
2391
2392 /* Symbols with type == 0 (N_UNDF) specify the length of the
2393 string table associated with this file. We use that info
2394 to know how to relocate the *next* file's string table indices. */
2395 if (type == N_UNDF)
2396 {
2397 file_string_table_offset = next_file_string_table_offset;
2398 next_file_string_table_offset += value;
2399 }
2400 else
2401 {
2402 /* Using the (possibly updated) string table offset, print the
2403 string (if any) associated with this symbol. */
2404 if ((strx + file_string_table_offset) < stabstr_size)
2405 printf (" %s", &strtab[strx + file_string_table_offset]);
2406 else
2407 printf (" *");
2408 }
2409 }
2410 printf ("\n\n");
2411 *string_offset_ptr = next_file_string_table_offset;
2412 }
2413
2414 typedef struct
2415 {
2416 const char * section_name;
2417 const char * string_section_name;
2418 unsigned string_offset;
2419 }
2420 stab_section_names;
2421
2422 static void
2423 find_stabs_section (bfd *abfd, asection *section, void *names)
2424 {
2425 int len;
2426 stab_section_names * sought = (stab_section_names *) names;
2427
2428 /* Check for section names for which stabsect_name is a prefix, to
2429 handle .stab.N, etc. */
2430 len = strlen (sought->section_name);
2431
2432 /* If the prefix matches, and the files section name ends with a
2433 nul or a digit, then we match. I.e., we want either an exact
2434 match or a section followed by a number. */
2435 if (strncmp (sought->section_name, section->name, len) == 0
2436 && (section->name[len] == 0
2437 || (section->name[len] == '.' && ISDIGIT (section->name[len + 1]))))
2438 {
2439 if (strtab == NULL)
2440 strtab = read_section_stabs (abfd, sought->string_section_name,
2441 &stabstr_size);
2442
2443 if (strtab)
2444 {
2445 stabs = (bfd_byte *) read_section_stabs (abfd, section->name,
2446 &stab_size);
2447 if (stabs)
2448 print_section_stabs (abfd, section->name, &sought->string_offset);
2449 }
2450 }
2451 }
2452
2453 static void
2454 dump_stabs_section (bfd *abfd, char *stabsect_name, char *strsect_name)
2455 {
2456 stab_section_names s;
2457
2458 s.section_name = stabsect_name;
2459 s.string_section_name = strsect_name;
2460 s.string_offset = 0;
2461
2462 bfd_map_over_sections (abfd, find_stabs_section, & s);
2463
2464 free (strtab);
2465 strtab = NULL;
2466 }
2467
2468 /* Dump the any sections containing stabs debugging information. */
2469
2470 static void
2471 dump_stabs (bfd *abfd)
2472 {
2473 dump_stabs_section (abfd, ".stab", ".stabstr");
2474 dump_stabs_section (abfd, ".stab.excl", ".stab.exclstr");
2475 dump_stabs_section (abfd, ".stab.index", ".stab.indexstr");
2476
2477 /* For Darwin. */
2478 dump_stabs_section (abfd, "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr");
2479
2480 dump_stabs_section (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
2481 }
2482 \f
2483 static void
2484 dump_bfd_header (bfd *abfd)
2485 {
2486 char *comma = "";
2487
2488 printf (_("architecture: %s, "),
2489 bfd_printable_arch_mach (bfd_get_arch (abfd),
2490 bfd_get_mach (abfd)));
2491 printf (_("flags 0x%08x:\n"), abfd->flags);
2492
2493 #define PF(x, y) if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
2494 PF (HAS_RELOC, "HAS_RELOC");
2495 PF (EXEC_P, "EXEC_P");
2496 PF (HAS_LINENO, "HAS_LINENO");
2497 PF (HAS_DEBUG, "HAS_DEBUG");
2498 PF (HAS_SYMS, "HAS_SYMS");
2499 PF (HAS_LOCALS, "HAS_LOCALS");
2500 PF (DYNAMIC, "DYNAMIC");
2501 PF (WP_TEXT, "WP_TEXT");
2502 PF (D_PAGED, "D_PAGED");
2503 PF (BFD_IS_RELAXABLE, "BFD_IS_RELAXABLE");
2504 PF (HAS_LOAD_PAGE, "HAS_LOAD_PAGE");
2505 printf (_("\nstart address 0x"));
2506 bfd_printf_vma (abfd, abfd->start_address);
2507 printf ("\n");
2508 }
2509
2510 \f
2511 static void
2512 dump_bfd_private_header (bfd *abfd)
2513 {
2514 bfd_print_private_bfd_data (abfd, stdout);
2515 }
2516
2517 \f
2518 /* Display a section in hexadecimal format with associated characters.
2519 Each line prefixed by the zero padded address. */
2520
2521 static void
2522 dump_section (bfd *abfd, asection *section, void *dummy ATTRIBUTE_UNUSED)
2523 {
2524 bfd_byte *data = 0;
2525 bfd_size_type datasize;
2526 bfd_size_type addr_offset;
2527 bfd_size_type start_offset;
2528 bfd_size_type stop_offset;
2529 unsigned int opb = bfd_octets_per_byte (abfd);
2530 /* Bytes per line. */
2531 const int onaline = 16;
2532 char buf[64];
2533 int count;
2534 int width;
2535
2536 if ((section->flags & SEC_HAS_CONTENTS) == 0)
2537 return;
2538
2539 if (! process_section_p (section))
2540 return;
2541
2542 if ((datasize = bfd_section_size (abfd, section)) == 0)
2543 return;
2544
2545 /* Compute the address range to display. */
2546 if (start_address == (bfd_vma) -1
2547 || start_address < section->vma)
2548 start_offset = 0;
2549 else
2550 start_offset = start_address - section->vma;
2551
2552 if (stop_address == (bfd_vma) -1)
2553 stop_offset = datasize / opb;
2554 else
2555 {
2556 if (stop_address < section->vma)
2557 stop_offset = 0;
2558 else
2559 stop_offset = stop_address - section->vma;
2560
2561 if (stop_offset > datasize / opb)
2562 stop_offset = datasize / opb;
2563 }
2564
2565 if (start_offset >= stop_offset)
2566 return;
2567
2568 printf (_("Contents of section %s:"), section->name);
2569 if (display_file_offsets)
2570 printf (_(" (Starting at file offset: 0x%lx)"),
2571 (unsigned long) (section->filepos + start_offset));
2572 printf ("\n");
2573
2574 data = xmalloc (datasize);
2575
2576 bfd_get_section_contents (abfd, section, data, 0, datasize);
2577
2578 width = 4;
2579
2580 bfd_sprintf_vma (abfd, buf, start_offset + section->vma);
2581 if (strlen (buf) >= sizeof (buf))
2582 abort ();
2583
2584 count = 0;
2585 while (buf[count] == '0' && buf[count+1] != '\0')
2586 count++;
2587 count = strlen (buf) - count;
2588 if (count > width)
2589 width = count;
2590
2591 bfd_sprintf_vma (abfd, buf, stop_offset + section->vma - 1);
2592 if (strlen (buf) >= sizeof (buf))
2593 abort ();
2594
2595 count = 0;
2596 while (buf[count] == '0' && buf[count+1] != '\0')
2597 count++;
2598 count = strlen (buf) - count;
2599 if (count > width)
2600 width = count;
2601
2602 for (addr_offset = start_offset;
2603 addr_offset < stop_offset; addr_offset += onaline / opb)
2604 {
2605 bfd_size_type j;
2606
2607 bfd_sprintf_vma (abfd, buf, (addr_offset + section->vma));
2608 count = strlen (buf);
2609 if ((size_t) count >= sizeof (buf))
2610 abort ();
2611
2612 putchar (' ');
2613 while (count < width)
2614 {
2615 putchar ('0');
2616 count++;
2617 }
2618 fputs (buf + count - width, stdout);
2619 putchar (' ');
2620
2621 for (j = addr_offset * opb;
2622 j < addr_offset * opb + onaline; j++)
2623 {
2624 if (j < stop_offset * opb)
2625 printf ("%02x", (unsigned) (data[j]));
2626 else
2627 printf (" ");
2628 if ((j & 3) == 3)
2629 printf (" ");
2630 }
2631
2632 printf (" ");
2633 for (j = addr_offset * opb;
2634 j < addr_offset * opb + onaline; j++)
2635 {
2636 if (j >= stop_offset * opb)
2637 printf (" ");
2638 else
2639 printf ("%c", ISPRINT (data[j]) ? data[j] : '.');
2640 }
2641 putchar ('\n');
2642 }
2643 free (data);
2644 }
2645
2646 /* Actually display the various requested regions. */
2647
2648 static void
2649 dump_data (bfd *abfd)
2650 {
2651 bfd_map_over_sections (abfd, dump_section, NULL);
2652 }
2653
2654 /* Should perhaps share code and display with nm? */
2655
2656 static void
2657 dump_symbols (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean dynamic)
2658 {
2659 asymbol **current;
2660 long max;
2661 long count;
2662
2663 if (dynamic)
2664 {
2665 current = dynsyms;
2666 max = dynsymcount;
2667 printf ("DYNAMIC SYMBOL TABLE:\n");
2668 }
2669 else
2670 {
2671 current = syms;
2672 max = symcount;
2673 printf ("SYMBOL TABLE:\n");
2674 }
2675
2676 if (max == 0)
2677 printf (_("no symbols\n"));
2678
2679 for (count = 0; count < max; count++)
2680 {
2681 bfd *cur_bfd;
2682
2683 if (*current == NULL)
2684 printf (_("no information for symbol number %ld\n"), count);
2685
2686 else if ((cur_bfd = bfd_asymbol_bfd (*current)) == NULL)
2687 printf (_("could not determine the type of symbol number %ld\n"),
2688 count);
2689
2690 else if (process_section_p ((* current)->section)
2691 && (dump_special_syms
2692 || !bfd_is_target_special_symbol (cur_bfd, *current)))
2693 {
2694 const char *name = (*current)->name;
2695
2696 if (do_demangle && name != NULL && *name != '\0')
2697 {
2698 char *alloc;
2699
2700 /* If we want to demangle the name, we demangle it
2701 here, and temporarily clobber it while calling
2702 bfd_print_symbol. FIXME: This is a gross hack. */
2703 alloc = bfd_demangle (cur_bfd, name, DMGL_ANSI | DMGL_PARAMS);
2704 if (alloc != NULL)
2705 (*current)->name = alloc;
2706 bfd_print_symbol (cur_bfd, stdout, *current,
2707 bfd_print_symbol_all);
2708 if (alloc != NULL)
2709 {
2710 (*current)->name = name;
2711 free (alloc);
2712 }
2713 }
2714 else
2715 bfd_print_symbol (cur_bfd, stdout, *current,
2716 bfd_print_symbol_all);
2717 printf ("\n");
2718 }
2719
2720 current++;
2721 }
2722 printf ("\n\n");
2723 }
2724 \f
2725 static void
2726 dump_reloc_set (bfd *abfd, asection *sec, arelent **relpp, long relcount)
2727 {
2728 arelent **p;
2729 char *last_filename, *last_functionname;
2730 unsigned int last_line;
2731
2732 /* Get column headers lined up reasonably. */
2733 {
2734 static int width;
2735
2736 if (width == 0)
2737 {
2738 char buf[30];
2739
2740 bfd_sprintf_vma (abfd, buf, (bfd_vma) -1);
2741 width = strlen (buf) - 7;
2742 }
2743 printf ("OFFSET %*s TYPE %*s VALUE \n", width, "", 12, "");
2744 }
2745
2746 last_filename = NULL;
2747 last_functionname = NULL;
2748 last_line = 0;
2749
2750 for (p = relpp; relcount && *p != NULL; p++, relcount--)
2751 {
2752 arelent *q = *p;
2753 const char *filename, *functionname;
2754 unsigned int line;
2755 const char *sym_name;
2756 const char *section_name;
2757
2758 if (start_address != (bfd_vma) -1
2759 && q->address < start_address)
2760 continue;
2761 if (stop_address != (bfd_vma) -1
2762 && q->address > stop_address)
2763 continue;
2764
2765 if (with_line_numbers
2766 && sec != NULL
2767 && bfd_find_nearest_line (abfd, sec, syms, q->address,
2768 &filename, &functionname, &line))
2769 {
2770 if (functionname != NULL
2771 && (last_functionname == NULL
2772 || strcmp (functionname, last_functionname) != 0))
2773 {
2774 printf ("%s():\n", functionname);
2775 if (last_functionname != NULL)
2776 free (last_functionname);
2777 last_functionname = xstrdup (functionname);
2778 }
2779
2780 if (line > 0
2781 && (line != last_line
2782 || (filename != NULL
2783 && last_filename != NULL
2784 && strcmp (filename, last_filename) != 0)))
2785 {
2786 printf ("%s:%u\n", filename == NULL ? "???" : filename, line);
2787 last_line = line;
2788 if (last_filename != NULL)
2789 free (last_filename);
2790 if (filename == NULL)
2791 last_filename = NULL;
2792 else
2793 last_filename = xstrdup (filename);
2794 }
2795 }
2796
2797 if (q->sym_ptr_ptr && *q->sym_ptr_ptr)
2798 {
2799 sym_name = (*(q->sym_ptr_ptr))->name;
2800 section_name = (*(q->sym_ptr_ptr))->section->name;
2801 }
2802 else
2803 {
2804 sym_name = NULL;
2805 section_name = NULL;
2806 }
2807
2808 bfd_printf_vma (abfd, q->address);
2809 if (q->howto == NULL)
2810 printf (" *unknown* ");
2811 else if (q->howto->name)
2812 printf (" %-16s ", q->howto->name);
2813 else
2814 printf (" %-16d ", q->howto->type);
2815 if (sym_name)
2816 objdump_print_symname (abfd, NULL, *q->sym_ptr_ptr);
2817 else
2818 {
2819 if (section_name == NULL)
2820 section_name = "*unknown*";
2821 printf ("[%s]", section_name);
2822 }
2823
2824 if (q->addend)
2825 {
2826 printf ("+0x");
2827 bfd_printf_vma (abfd, q->addend);
2828 }
2829
2830 printf ("\n");
2831 }
2832 }
2833
2834 static void
2835 dump_relocs_in_section (bfd *abfd,
2836 asection *section,
2837 void *dummy ATTRIBUTE_UNUSED)
2838 {
2839 arelent **relpp;
2840 long relcount;
2841 long relsize;
2842
2843 if ( bfd_is_abs_section (section)
2844 || bfd_is_und_section (section)
2845 || bfd_is_com_section (section)
2846 || (! process_section_p (section))
2847 || ((section->flags & SEC_RELOC) == 0))
2848 return;
2849
2850 relsize = bfd_get_reloc_upper_bound (abfd, section);
2851 if (relsize < 0)
2852 bfd_fatal (bfd_get_filename (abfd));
2853
2854 printf ("RELOCATION RECORDS FOR [%s]:", section->name);
2855
2856 if (relsize == 0)
2857 {
2858 printf (" (none)\n\n");
2859 return;
2860 }
2861
2862 relpp = xmalloc (relsize);
2863 relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
2864
2865 if (relcount < 0)
2866 bfd_fatal (bfd_get_filename (abfd));
2867 else if (relcount == 0)
2868 printf (" (none)\n\n");
2869 else
2870 {
2871 printf ("\n");
2872 dump_reloc_set (abfd, section, relpp, relcount);
2873 printf ("\n\n");
2874 }
2875 free (relpp);
2876 }
2877
2878 static void
2879 dump_relocs (bfd *abfd)
2880 {
2881 bfd_map_over_sections (abfd, dump_relocs_in_section, NULL);
2882 }
2883
2884 static void
2885 dump_dynamic_relocs (bfd *abfd)
2886 {
2887 long relsize;
2888 arelent **relpp;
2889 long relcount;
2890
2891 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2892 if (relsize < 0)
2893 bfd_fatal (bfd_get_filename (abfd));
2894
2895 printf ("DYNAMIC RELOCATION RECORDS");
2896
2897 if (relsize == 0)
2898 printf (" (none)\n\n");
2899 else
2900 {
2901 relpp = xmalloc (relsize);
2902 relcount = bfd_canonicalize_dynamic_reloc (abfd, relpp, dynsyms);
2903
2904 if (relcount < 0)
2905 bfd_fatal (bfd_get_filename (abfd));
2906 else if (relcount == 0)
2907 printf (" (none)\n\n");
2908 else
2909 {
2910 printf ("\n");
2911 dump_reloc_set (abfd, NULL, relpp, relcount);
2912 printf ("\n\n");
2913 }
2914 free (relpp);
2915 }
2916 }
2917
2918 /* Creates a table of paths, to search for source files. */
2919
2920 static void
2921 add_include_path (const char *path)
2922 {
2923 if (path[0] == 0)
2924 return;
2925 include_path_count++;
2926 include_paths = xrealloc (include_paths,
2927 include_path_count * sizeof (*include_paths));
2928 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2929 if (path[1] == ':' && path[2] == 0)
2930 path = concat (path, ".", (const char *) 0);
2931 #endif
2932 include_paths[include_path_count - 1] = path;
2933 }
2934
2935 static void
2936 adjust_addresses (bfd *abfd ATTRIBUTE_UNUSED,
2937 asection *section,
2938 void *arg)
2939 {
2940 if ((section->flags & SEC_DEBUGGING) == 0)
2941 {
2942 bfd_boolean *has_reloc_p = (bfd_boolean *) arg;
2943 section->vma += adjust_section_vma;
2944 if (*has_reloc_p)
2945 section->lma += adjust_section_vma;
2946 }
2947 }
2948
2949 /* Dump selected contents of ABFD. */
2950
2951 static void
2952 dump_bfd (bfd *abfd)
2953 {
2954 /* If we are adjusting section VMA's, change them all now. Changing
2955 the BFD information is a hack. However, we must do it, or
2956 bfd_find_nearest_line will not do the right thing. */
2957 if (adjust_section_vma != 0)
2958 {
2959 bfd_boolean has_reloc = (abfd->flags & HAS_RELOC);
2960 bfd_map_over_sections (abfd, adjust_addresses, &has_reloc);
2961 }
2962
2963 if (! dump_debugging_tags)
2964 printf (_("\n%s: file format %s\n"), bfd_get_filename (abfd),
2965 abfd->xvec->name);
2966 if (dump_ar_hdrs)
2967 print_arelt_descr (stdout, abfd, TRUE);
2968 if (dump_file_header)
2969 dump_bfd_header (abfd);
2970 if (dump_private_headers)
2971 dump_bfd_private_header (abfd);
2972 if (! dump_debugging_tags)
2973 putchar ('\n');
2974 if (dump_section_headers)
2975 dump_headers (abfd);
2976
2977 if (dump_symtab
2978 || dump_reloc_info
2979 || disassemble
2980 || dump_debugging
2981 || dump_dwarf_section_info)
2982 syms = slurp_symtab (abfd);
2983 if (dump_dynamic_symtab || dump_dynamic_reloc_info
2984 || (disassemble && bfd_get_dynamic_symtab_upper_bound (abfd) > 0))
2985 dynsyms = slurp_dynamic_symtab (abfd);
2986 if (disassemble)
2987 {
2988 synthcount = bfd_get_synthetic_symtab (abfd, symcount, syms,
2989 dynsymcount, dynsyms, &synthsyms);
2990 if (synthcount < 0)
2991 synthcount = 0;
2992 }
2993
2994 if (dump_symtab)
2995 dump_symbols (abfd, FALSE);
2996 if (dump_dynamic_symtab)
2997 dump_symbols (abfd, TRUE);
2998 if (dump_dwarf_section_info)
2999 dump_dwarf (abfd);
3000 if (dump_stab_section_info)
3001 dump_stabs (abfd);
3002 if (dump_reloc_info && ! disassemble)
3003 dump_relocs (abfd);
3004 if (dump_dynamic_reloc_info && ! disassemble)
3005 dump_dynamic_relocs (abfd);
3006 if (dump_section_contents)
3007 dump_data (abfd);
3008 if (disassemble)
3009 disassemble_data (abfd);
3010
3011 if (dump_debugging)
3012 {
3013 void *dhandle;
3014
3015 dhandle = read_debugging_info (abfd, syms, symcount, TRUE);
3016 if (dhandle != NULL)
3017 {
3018 if (!print_debugging_info (stdout, dhandle, abfd, syms,
3019 bfd_demangle,
3020 dump_debugging_tags ? TRUE : FALSE))
3021 {
3022 non_fatal (_("%s: printing debugging information failed"),
3023 bfd_get_filename (abfd));
3024 exit_status = 1;
3025 }
3026 }
3027 /* PR 6483: If there was no STABS or IEEE debug
3028 info in the file, try DWARF instead. */
3029 else if (! dump_dwarf_section_info)
3030 {
3031 dump_dwarf (abfd);
3032 }
3033 }
3034
3035 if (syms)
3036 {
3037 free (syms);
3038 syms = NULL;
3039 }
3040
3041 if (dynsyms)
3042 {
3043 free (dynsyms);
3044 dynsyms = NULL;
3045 }
3046
3047 if (synthsyms)
3048 {
3049 free (synthsyms);
3050 synthsyms = NULL;
3051 }
3052
3053 symcount = 0;
3054 dynsymcount = 0;
3055 synthcount = 0;
3056 }
3057
3058 static void
3059 display_bfd (bfd *abfd)
3060 {
3061 char **matching;
3062
3063 if (bfd_check_format_matches (abfd, bfd_object, &matching))
3064 {
3065 dump_bfd (abfd);
3066 return;
3067 }
3068
3069 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3070 {
3071 nonfatal (bfd_get_filename (abfd));
3072 list_matching_formats (matching);
3073 free (matching);
3074 return;
3075 }
3076
3077 if (bfd_get_error () != bfd_error_file_not_recognized)
3078 {
3079 nonfatal (bfd_get_filename (abfd));
3080 return;
3081 }
3082
3083 if (bfd_check_format_matches (abfd, bfd_core, &matching))
3084 {
3085 dump_bfd (abfd);
3086 return;
3087 }
3088
3089 nonfatal (bfd_get_filename (abfd));
3090
3091 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3092 {
3093 list_matching_formats (matching);
3094 free (matching);
3095 }
3096 }
3097
3098 static void
3099 display_file (char *filename, char *target)
3100 {
3101 bfd *file;
3102 bfd *arfile = NULL;
3103
3104 if (get_file_size (filename) < 1)
3105 {
3106 exit_status = 1;
3107 return;
3108 }
3109
3110 file = bfd_openr (filename, target);
3111 if (file == NULL)
3112 {
3113 nonfatal (filename);
3114 return;
3115 }
3116
3117 /* If the file is an archive, process all of its elements. */
3118 if (bfd_check_format (file, bfd_archive))
3119 {
3120 bfd *last_arfile = NULL;
3121
3122 printf (_("In archive %s:\n"), bfd_get_filename (file));
3123 for (;;)
3124 {
3125 bfd_set_error (bfd_error_no_error);
3126
3127 arfile = bfd_openr_next_archived_file (file, arfile);
3128 if (arfile == NULL)
3129 {
3130 if (bfd_get_error () != bfd_error_no_more_archived_files)
3131 nonfatal (bfd_get_filename (file));
3132 break;
3133 }
3134
3135 display_bfd (arfile);
3136
3137 if (last_arfile != NULL)
3138 bfd_close (last_arfile);
3139 last_arfile = arfile;
3140 }
3141
3142 if (last_arfile != NULL)
3143 bfd_close (last_arfile);
3144 }
3145 else
3146 display_bfd (file);
3147
3148 bfd_close (file);
3149 }
3150 \f
3151 int
3152 main (int argc, char **argv)
3153 {
3154 int c;
3155 char *target = default_target;
3156 bfd_boolean seenflag = FALSE;
3157
3158 #if defined (HAVE_SETLOCALE)
3159 #if defined (HAVE_LC_MESSAGES)
3160 setlocale (LC_MESSAGES, "");
3161 #endif
3162 setlocale (LC_CTYPE, "");
3163 #endif
3164
3165 bindtextdomain (PACKAGE, LOCALEDIR);
3166 textdomain (PACKAGE);
3167
3168 program_name = *argv;
3169 xmalloc_set_program_name (program_name);
3170
3171 START_PROGRESS (program_name, 0);
3172
3173 expandargv (&argc, &argv);
3174
3175 bfd_init ();
3176 set_default_bfd_target ();
3177
3178 while ((c = getopt_long (argc, argv, "pib:m:M:VvCdDlfFaHhrRtTxsSI:j:wE:zgeGW",
3179 long_options, (int *) 0))
3180 != EOF)
3181 {
3182 switch (c)
3183 {
3184 case 0:
3185 break; /* We've been given a long option. */
3186 case 'm':
3187 machine = optarg;
3188 break;
3189 case 'M':
3190 if (disassembler_options)
3191 /* Ignore potential memory leak for now. */
3192 disassembler_options = concat (disassembler_options, ",",
3193 optarg, (const char *) NULL);
3194 else
3195 disassembler_options = optarg;
3196 break;
3197 case 'j':
3198 if (only_used == only_size)
3199 {
3200 only_size += 8;
3201 only = xrealloc (only, only_size * sizeof (char *));
3202 }
3203 only [only_used++] = optarg;
3204 break;
3205 case 'F':
3206 display_file_offsets = TRUE;
3207 break;
3208 case 'l':
3209 with_line_numbers = TRUE;
3210 break;
3211 case 'b':
3212 target = optarg;
3213 break;
3214 case 'C':
3215 do_demangle = TRUE;
3216 if (optarg != NULL)
3217 {
3218 enum demangling_styles style;
3219
3220 style = cplus_demangle_name_to_style (optarg);
3221 if (style == unknown_demangling)
3222 fatal (_("unknown demangling style `%s'"),
3223 optarg);
3224
3225 cplus_demangle_set_style (style);
3226 }
3227 break;
3228 case 'w':
3229 wide_output = TRUE;
3230 break;
3231 case OPTION_ADJUST_VMA:
3232 adjust_section_vma = parse_vma (optarg, "--adjust-vma");
3233 break;
3234 case OPTION_START_ADDRESS:
3235 start_address = parse_vma (optarg, "--start-address");
3236 if ((stop_address != (bfd_vma) -1) && stop_address <= start_address)
3237 fatal (_("error: the start address should be before the end address"));
3238 break;
3239 case OPTION_STOP_ADDRESS:
3240 stop_address = parse_vma (optarg, "--stop-address");
3241 if ((start_address != (bfd_vma) -1) && stop_address <= start_address)
3242 fatal (_("error: the stop address should be after the start address"));
3243 break;
3244 case 'E':
3245 if (strcmp (optarg, "B") == 0)
3246 endian = BFD_ENDIAN_BIG;
3247 else if (strcmp (optarg, "L") == 0)
3248 endian = BFD_ENDIAN_LITTLE;
3249 else
3250 {
3251 non_fatal (_("unrecognized -E option"));
3252 usage (stderr, 1);
3253 }
3254 break;
3255 case OPTION_ENDIAN:
3256 if (strncmp (optarg, "big", strlen (optarg)) == 0)
3257 endian = BFD_ENDIAN_BIG;
3258 else if (strncmp (optarg, "little", strlen (optarg)) == 0)
3259 endian = BFD_ENDIAN_LITTLE;
3260 else
3261 {
3262 non_fatal (_("unrecognized --endian type `%s'"), optarg);
3263 usage (stderr, 1);
3264 }
3265 break;
3266
3267 case 'f':
3268 dump_file_header = TRUE;
3269 seenflag = TRUE;
3270 break;
3271 case 'i':
3272 formats_info = TRUE;
3273 seenflag = TRUE;
3274 break;
3275 case 'I':
3276 add_include_path (optarg);
3277 break;
3278 case 'p':
3279 dump_private_headers = TRUE;
3280 seenflag = TRUE;
3281 break;
3282 case 'x':
3283 dump_private_headers = TRUE;
3284 dump_symtab = TRUE;
3285 dump_reloc_info = TRUE;
3286 dump_file_header = TRUE;
3287 dump_ar_hdrs = TRUE;
3288 dump_section_headers = TRUE;
3289 seenflag = TRUE;
3290 break;
3291 case 't':
3292 dump_symtab = TRUE;
3293 seenflag = TRUE;
3294 break;
3295 case 'T':
3296 dump_dynamic_symtab = TRUE;
3297 seenflag = TRUE;
3298 break;
3299 case 'd':
3300 disassemble = TRUE;
3301 seenflag = TRUE;
3302 break;
3303 case 'z':
3304 disassemble_zeroes = TRUE;
3305 break;
3306 case 'D':
3307 disassemble = TRUE;
3308 disassemble_all = TRUE;
3309 seenflag = TRUE;
3310 break;
3311 case 'S':
3312 disassemble = TRUE;
3313 with_source_code = TRUE;
3314 seenflag = TRUE;
3315 break;
3316 case 'g':
3317 dump_debugging = 1;
3318 seenflag = TRUE;
3319 break;
3320 case 'e':
3321 dump_debugging = 1;
3322 dump_debugging_tags = 1;
3323 do_demangle = TRUE;
3324 seenflag = TRUE;
3325 break;
3326 case 'W':
3327 dump_dwarf_section_info = TRUE;
3328 seenflag = TRUE;
3329 do_debug_info = 1;
3330 do_debug_abbrevs = 1;
3331 do_debug_lines = 1;
3332 do_debug_pubnames = 1;
3333 do_debug_aranges = 1;
3334 do_debug_ranges = 1;
3335 do_debug_frames = 1;
3336 do_debug_macinfo = 1;
3337 do_debug_str = 1;
3338 do_debug_loc = 1;
3339 break;
3340 case 'G':
3341 dump_stab_section_info = TRUE;
3342 seenflag = TRUE;
3343 break;
3344 case 's':
3345 dump_section_contents = TRUE;
3346 seenflag = TRUE;
3347 break;
3348 case 'r':
3349 dump_reloc_info = TRUE;
3350 seenflag = TRUE;
3351 break;
3352 case 'R':
3353 dump_dynamic_reloc_info = TRUE;
3354 seenflag = TRUE;
3355 break;
3356 case 'a':
3357 dump_ar_hdrs = TRUE;
3358 seenflag = TRUE;
3359 break;
3360 case 'h':
3361 dump_section_headers = TRUE;
3362 seenflag = TRUE;
3363 break;
3364 case 'H':
3365 usage (stdout, 0);
3366 seenflag = TRUE;
3367 case 'v':
3368 case 'V':
3369 show_version = TRUE;
3370 seenflag = TRUE;
3371 break;
3372
3373 default:
3374 usage (stderr, 1);
3375 }
3376 }
3377
3378 if (show_version)
3379 print_version ("objdump");
3380
3381 if (!seenflag)
3382 usage (stderr, 2);
3383
3384 if (formats_info)
3385 exit_status = display_info ();
3386 else
3387 {
3388 if (optind == argc)
3389 display_file ("a.out", target);
3390 else
3391 for (; optind < argc;)
3392 display_file (argv[optind++], target);
3393 }
3394
3395 END_PROGRESS (program_name);
3396
3397 return exit_status;
3398 }