PR 10263
[deliverable/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, 2009
4 Free Software Foundation, Inc.
5
6 This file is part of GNU Binutils.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3, or (at your option)
11 any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
22
23
24 /* Objdump overview.
25
26 Objdump displays information about one or more object files, either on
27 their own, or inside libraries. It is commonly used as a disassembler,
28 but it can also display information about file headers, symbol tables,
29 relocations, debugging directives and more.
30
31 The flow of execution is as follows:
32
33 1. Command line arguments are checked for control switches and the
34 information to be displayed is selected.
35
36 2. Any remaining arguments are assumed to be object files, and they are
37 processed in order by display_bfd(). If the file is an archive each
38 of its elements is processed in turn.
39
40 3. The file's target architecture and binary file format are determined
41 by bfd_check_format(). If they are recognised, then dump_bfd() is
42 called.
43
44 4. dump_bfd() in turn calls separate functions to display the requested
45 item(s) of information(s). For example disassemble_data() is called if
46 a disassembly has been requested.
47
48 When disassembling the code loops through blocks of instructions bounded
49 by symbols, calling disassemble_bytes() on each block. The actual
50 disassembling is done by the libopcodes library, via a function pointer
51 supplied by the disassembler() function. */
52
53 #include "sysdep.h"
54 #include "bfd.h"
55 #include "elf-bfd.h"
56 #include "progress.h"
57 #include "bucomm.h"
58 #include "dwarf.h"
59 #include "getopt.h"
60 #include "safe-ctype.h"
61 #include "dis-asm.h"
62 #include "libiberty.h"
63 #include "demangle.h"
64 #include "filenames.h"
65 #include "debug.h"
66 #include "budbg.h"
67
68 #ifdef HAVE_MMAP
69 #include <sys/mman.h>
70 #endif
71
72 #include <sys/stat.h>
73
74 /* Internal headers for the ELF .stab-dump code - sorry. */
75 #define BYTES_IN_WORD 32
76 #include "aout/aout64.h"
77
78 /* Exit status. */
79 static int exit_status = 0;
80
81 static char *default_target = NULL; /* Default at runtime. */
82
83 /* The following variables are set based on arguments passed on the
84 command line. */
85 static int show_version = 0; /* Show the version number. */
86 static int dump_section_contents; /* -s */
87 static int dump_section_headers; /* -h */
88 static bfd_boolean dump_file_header; /* -f */
89 static int dump_symtab; /* -t */
90 static int dump_dynamic_symtab; /* -T */
91 static int dump_reloc_info; /* -r */
92 static int dump_dynamic_reloc_info; /* -R */
93 static int dump_ar_hdrs; /* -a */
94 static int dump_private_headers; /* -p */
95 static int prefix_addresses; /* --prefix-addresses */
96 static int with_line_numbers; /* -l */
97 static bfd_boolean with_source_code; /* -S */
98 static int show_raw_insn; /* --show-raw-insn */
99 static int dump_dwarf_section_info; /* --dwarf */
100 static int dump_stab_section_info; /* --stabs */
101 static int do_demangle; /* -C, --demangle */
102 static bfd_boolean disassemble; /* -d */
103 static bfd_boolean disassemble_all; /* -D */
104 static int disassemble_zeroes; /* --disassemble-zeroes */
105 static bfd_boolean formats_info; /* -i */
106 static int wide_output; /* -w */
107 static bfd_vma start_address = (bfd_vma) -1; /* --start-address */
108 static bfd_vma stop_address = (bfd_vma) -1; /* --stop-address */
109 static int dump_debugging; /* --debugging */
110 static int dump_debugging_tags; /* --debugging-tags */
111 static int dump_special_syms = 0; /* --special-syms */
112 static bfd_vma adjust_section_vma = 0; /* --adjust-vma */
113 static int file_start_context = 0; /* --file-start-context */
114 static bfd_boolean display_file_offsets;/* -F */
115 static const char *prefix; /* --prefix */
116 static int prefix_strip; /* --prefix-strip */
117 static size_t prefix_length;
118
119 /* Pointer to an array of section names provided by
120 one or more "-j secname" command line options. */
121 static char **only;
122 /* The total number of slots in the only[] array. */
123 static size_t only_size = 0;
124 /* The number of occupied slots in the only[] array. */
125 static size_t only_used = 0;
126
127 /* Variables for handling include file path table. */
128 static const char **include_paths;
129 static int include_path_count;
130
131 /* Extra info to pass to the section disassembler and address printing
132 function. */
133 struct objdump_disasm_info
134 {
135 bfd * abfd;
136 asection * sec;
137 bfd_boolean require_sec;
138 arelent ** dynrelbuf;
139 long dynrelcount;
140 disassembler_ftype disassemble_fn;
141 arelent * reloc;
142 };
143
144 /* Architecture to disassemble for, or default if NULL. */
145 static char *machine = NULL;
146
147 /* Target specific options to the disassembler. */
148 static char *disassembler_options = NULL;
149
150 /* Endianness to disassemble for, or default if BFD_ENDIAN_UNKNOWN. */
151 static enum bfd_endian endian = BFD_ENDIAN_UNKNOWN;
152
153 /* The symbol table. */
154 static asymbol **syms;
155
156 /* Number of symbols in `syms'. */
157 static long symcount = 0;
158
159 /* The sorted symbol table. */
160 static asymbol **sorted_syms;
161
162 /* Number of symbols in `sorted_syms'. */
163 static long sorted_symcount = 0;
164
165 /* The dynamic symbol table. */
166 static asymbol **dynsyms;
167
168 /* The synthetic symbol table. */
169 static asymbol *synthsyms;
170 static long synthcount = 0;
171
172 /* Number of symbols in `dynsyms'. */
173 static long dynsymcount = 0;
174
175 static bfd_byte *stabs;
176 static bfd_size_type stab_size;
177
178 static char *strtab;
179 static bfd_size_type stabstr_size;
180
181 static bfd_boolean is_relocatable = FALSE;
182 \f
183 static void
184 usage (FILE *stream, int status)
185 {
186 fprintf (stream, _("Usage: %s <option(s)> <file(s)>\n"), program_name);
187 fprintf (stream, _(" Display information from object <file(s)>.\n"));
188 fprintf (stream, _(" At least one of the following switches must be given:\n"));
189 fprintf (stream, _("\
190 -a, --archive-headers Display archive header information\n\
191 -f, --file-headers Display the contents of the overall file header\n\
192 -p, --private-headers Display object format specific file header contents\n\
193 -h, --[section-]headers Display the contents of the section headers\n\
194 -x, --all-headers Display the contents of all headers\n\
195 -d, --disassemble Display assembler contents of executable sections\n\
196 -D, --disassemble-all Display assembler contents of all sections\n\
197 -S, --source Intermix source code with disassembly\n\
198 -s, --full-contents Display the full contents of all sections requested\n\
199 -g, --debugging Display debug information in object file\n\
200 -e, --debugging-tags Display debug information using ctags style\n\
201 -G, --stabs Display (in raw form) any STABS info in the file\n\
202 -W[lLiaprmfFsoR] or\n\
203 --dwarf[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=str,=loc,=Ranges]\n\
204 Display DWARF info in the file\n\
205 -t, --syms Display the contents of the symbol table(s)\n\
206 -T, --dynamic-syms Display the contents of the dynamic symbol table\n\
207 -r, --reloc Display the relocation entries in the file\n\
208 -R, --dynamic-reloc Display the dynamic relocation entries in the file\n\
209 @<file> Read options from <file>\n\
210 -v, --version Display this program's version number\n\
211 -i, --info List object formats and architectures supported\n\
212 -H, --help Display this information\n\
213 "));
214 if (status != 2)
215 {
216 fprintf (stream, _("\n The following switches are optional:\n"));
217 fprintf (stream, _("\
218 -b, --target=BFDNAME Specify the target object format as BFDNAME\n\
219 -m, --architecture=MACHINE Specify the target architecture as MACHINE\n\
220 -j, --section=NAME Only display information for section NAME\n\
221 -M, --disassembler-options=OPT Pass text OPT on to the disassembler\n\
222 -EB --endian=big Assume big endian format when disassembling\n\
223 -EL --endian=little Assume little endian format when disassembling\n\
224 --file-start-context Include context from start of file (with -S)\n\
225 -I, --include=DIR Add DIR to search list for source files\n\
226 -l, --line-numbers Include line numbers and filenames in output\n\
227 -F, --file-offsets Include file offsets when displaying information\n\
228 -C, --demangle[=STYLE] Decode mangled/processed symbol names\n\
229 The STYLE, if specified, can be `auto', `gnu',\n\
230 `lucid', `arm', `hp', `edg', `gnu-v3', `java'\n\
231 or `gnat'\n\
232 -w, --wide Format output for more than 80 columns\n\
233 -z, --disassemble-zeroes Do not skip blocks of zeroes when disassembling\n\
234 --start-address=ADDR Only process data whose address is >= ADDR\n\
235 --stop-address=ADDR Only process data whose address is <= ADDR\n\
236 --prefix-addresses Print complete address alongside disassembly\n\
237 --[no-]show-raw-insn Display hex alongside symbolic disassembly\n\
238 --adjust-vma=OFFSET Add OFFSET to all displayed section addresses\n\
239 --special-syms Include special symbols in symbol dumps\n\
240 --prefix=PREFIX Add PREFIX to absolute paths for -S\n\
241 --prefix-strip=LEVEL Strip initial directory names for -S\n\
242 \n"));
243 list_supported_targets (program_name, stream);
244 list_supported_architectures (program_name, stream);
245
246 disassembler_usage (stream);
247 }
248 if (REPORT_BUGS_TO[0] && status == 0)
249 fprintf (stream, _("Report bugs to %s.\n"), REPORT_BUGS_TO);
250 exit (status);
251 }
252
253 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
254 enum option_values
255 {
256 OPTION_ENDIAN=150,
257 OPTION_START_ADDRESS,
258 OPTION_STOP_ADDRESS,
259 OPTION_DWARF,
260 OPTION_PREFIX,
261 OPTION_PREFIX_STRIP,
262 OPTION_ADJUST_VMA
263 };
264
265 static struct option long_options[]=
266 {
267 {"adjust-vma", required_argument, NULL, OPTION_ADJUST_VMA},
268 {"all-headers", no_argument, NULL, 'x'},
269 {"private-headers", no_argument, NULL, 'p'},
270 {"architecture", required_argument, NULL, 'm'},
271 {"archive-headers", no_argument, NULL, 'a'},
272 {"debugging", no_argument, NULL, 'g'},
273 {"debugging-tags", no_argument, NULL, 'e'},
274 {"demangle", optional_argument, NULL, 'C'},
275 {"disassemble", no_argument, NULL, 'd'},
276 {"disassemble-all", no_argument, NULL, 'D'},
277 {"disassembler-options", required_argument, NULL, 'M'},
278 {"disassemble-zeroes", no_argument, NULL, 'z'},
279 {"dynamic-reloc", no_argument, NULL, 'R'},
280 {"dynamic-syms", no_argument, NULL, 'T'},
281 {"endian", required_argument, NULL, OPTION_ENDIAN},
282 {"file-headers", no_argument, NULL, 'f'},
283 {"file-offsets", no_argument, NULL, 'F'},
284 {"file-start-context", no_argument, &file_start_context, 1},
285 {"full-contents", no_argument, NULL, 's'},
286 {"headers", no_argument, NULL, 'h'},
287 {"help", no_argument, NULL, 'H'},
288 {"info", no_argument, NULL, 'i'},
289 {"line-numbers", no_argument, NULL, 'l'},
290 {"no-show-raw-insn", no_argument, &show_raw_insn, -1},
291 {"prefix-addresses", no_argument, &prefix_addresses, 1},
292 {"reloc", no_argument, NULL, 'r'},
293 {"section", required_argument, NULL, 'j'},
294 {"section-headers", no_argument, NULL, 'h'},
295 {"show-raw-insn", no_argument, &show_raw_insn, 1},
296 {"source", no_argument, NULL, 'S'},
297 {"special-syms", no_argument, &dump_special_syms, 1},
298 {"include", required_argument, NULL, 'I'},
299 {"dwarf", optional_argument, NULL, OPTION_DWARF},
300 {"stabs", no_argument, NULL, 'G'},
301 {"start-address", required_argument, NULL, OPTION_START_ADDRESS},
302 {"stop-address", required_argument, NULL, OPTION_STOP_ADDRESS},
303 {"syms", no_argument, NULL, 't'},
304 {"target", required_argument, NULL, 'b'},
305 {"version", no_argument, NULL, 'V'},
306 {"wide", no_argument, NULL, 'w'},
307 {"prefix", required_argument, NULL, OPTION_PREFIX},
308 {"prefix-strip", required_argument, NULL, OPTION_PREFIX_STRIP},
309 {0, no_argument, 0, 0}
310 };
311 \f
312 static void
313 nonfatal (const char *msg)
314 {
315 bfd_nonfatal (msg);
316 exit_status = 1;
317 }
318 \f
319 static void
320 dump_section_header (bfd *abfd, asection *section,
321 void *ignored ATTRIBUTE_UNUSED)
322 {
323 char *comma = "";
324 unsigned int opb = bfd_octets_per_byte (abfd);
325
326 /* Ignore linker created section. See elfNN_ia64_object_p in
327 bfd/elfxx-ia64.c. */
328 if (section->flags & SEC_LINKER_CREATED)
329 return;
330
331 printf ("%3d %-13s %08lx ", section->index,
332 bfd_get_section_name (abfd, section),
333 (unsigned long) bfd_section_size (abfd, section) / opb);
334 bfd_printf_vma (abfd, bfd_get_section_vma (abfd, section));
335 printf (" ");
336 bfd_printf_vma (abfd, section->lma);
337 printf (" %08lx 2**%u", (unsigned long) section->filepos,
338 bfd_get_section_alignment (abfd, section));
339 if (! wide_output)
340 printf ("\n ");
341 printf (" ");
342
343 #define PF(x, y) \
344 if (section->flags & x) { printf ("%s%s", comma, y); comma = ", "; }
345
346 PF (SEC_HAS_CONTENTS, "CONTENTS");
347 PF (SEC_ALLOC, "ALLOC");
348 PF (SEC_CONSTRUCTOR, "CONSTRUCTOR");
349 PF (SEC_LOAD, "LOAD");
350 PF (SEC_RELOC, "RELOC");
351 PF (SEC_READONLY, "READONLY");
352 PF (SEC_CODE, "CODE");
353 PF (SEC_DATA, "DATA");
354 PF (SEC_ROM, "ROM");
355 PF (SEC_DEBUGGING, "DEBUGGING");
356 PF (SEC_NEVER_LOAD, "NEVER_LOAD");
357 PF (SEC_EXCLUDE, "EXCLUDE");
358 PF (SEC_SORT_ENTRIES, "SORT_ENTRIES");
359 if (bfd_get_arch (abfd) == bfd_arch_tic54x)
360 {
361 PF (SEC_TIC54X_BLOCK, "BLOCK");
362 PF (SEC_TIC54X_CLINK, "CLINK");
363 }
364 PF (SEC_SMALL_DATA, "SMALL_DATA");
365 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
366 PF (SEC_COFF_SHARED, "SHARED");
367 PF (SEC_THREAD_LOCAL, "THREAD_LOCAL");
368 PF (SEC_GROUP, "GROUP");
369
370 if ((section->flags & SEC_LINK_ONCE) != 0)
371 {
372 const char *ls;
373 struct coff_comdat_info *comdat;
374
375 switch (section->flags & SEC_LINK_DUPLICATES)
376 {
377 default:
378 abort ();
379 case SEC_LINK_DUPLICATES_DISCARD:
380 ls = "LINK_ONCE_DISCARD";
381 break;
382 case SEC_LINK_DUPLICATES_ONE_ONLY:
383 ls = "LINK_ONCE_ONE_ONLY";
384 break;
385 case SEC_LINK_DUPLICATES_SAME_SIZE:
386 ls = "LINK_ONCE_SAME_SIZE";
387 break;
388 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
389 ls = "LINK_ONCE_SAME_CONTENTS";
390 break;
391 }
392 printf ("%s%s", comma, ls);
393
394 comdat = bfd_coff_get_comdat_section (abfd, section);
395 if (comdat != NULL)
396 printf (" (COMDAT %s %ld)", comdat->name, comdat->symbol);
397
398 comma = ", ";
399 }
400
401 printf ("\n");
402 #undef PF
403 }
404
405 static void
406 dump_headers (bfd *abfd)
407 {
408 printf (_("Sections:\n"));
409
410 #ifndef BFD64
411 printf (_("Idx Name Size VMA LMA File off Algn"));
412 #else
413 /* With BFD64, non-ELF returns -1 and wants always 64 bit addresses. */
414 if (bfd_get_arch_size (abfd) == 32)
415 printf (_("Idx Name Size VMA LMA File off Algn"));
416 else
417 printf (_("Idx Name Size VMA LMA File off Algn"));
418 #endif
419
420 if (wide_output)
421 printf (_(" Flags"));
422 if (abfd->flags & HAS_LOAD_PAGE)
423 printf (_(" Pg"));
424 printf ("\n");
425
426 bfd_map_over_sections (abfd, dump_section_header, NULL);
427 }
428 \f
429 static asymbol **
430 slurp_symtab (bfd *abfd)
431 {
432 asymbol **sy = NULL;
433 long storage;
434
435 if (!(bfd_get_file_flags (abfd) & HAS_SYMS))
436 {
437 symcount = 0;
438 return NULL;
439 }
440
441 storage = bfd_get_symtab_upper_bound (abfd);
442 if (storage < 0)
443 bfd_fatal (bfd_get_filename (abfd));
444 if (storage)
445 sy = xmalloc (storage);
446
447 symcount = bfd_canonicalize_symtab (abfd, sy);
448 if (symcount < 0)
449 bfd_fatal (bfd_get_filename (abfd));
450 return sy;
451 }
452
453 /* Read in the dynamic symbols. */
454
455 static asymbol **
456 slurp_dynamic_symtab (bfd *abfd)
457 {
458 asymbol **sy = NULL;
459 long storage;
460
461 storage = bfd_get_dynamic_symtab_upper_bound (abfd);
462 if (storage < 0)
463 {
464 if (!(bfd_get_file_flags (abfd) & DYNAMIC))
465 {
466 non_fatal (_("%s: not a dynamic object"), bfd_get_filename (abfd));
467 dynsymcount = 0;
468 return NULL;
469 }
470
471 bfd_fatal (bfd_get_filename (abfd));
472 }
473 if (storage)
474 sy = xmalloc (storage);
475
476 dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, sy);
477 if (dynsymcount < 0)
478 bfd_fatal (bfd_get_filename (abfd));
479 return sy;
480 }
481
482 /* Filter out (in place) symbols that are useless for disassembly.
483 COUNT is the number of elements in SYMBOLS.
484 Return the number of useful symbols. */
485
486 static long
487 remove_useless_symbols (asymbol **symbols, long count)
488 {
489 asymbol **in_ptr = symbols, **out_ptr = symbols;
490
491 while (--count >= 0)
492 {
493 asymbol *sym = *in_ptr++;
494
495 if (sym->name == NULL || sym->name[0] == '\0')
496 continue;
497 if (sym->flags & (BSF_DEBUGGING | BSF_SECTION_SYM))
498 continue;
499 if (bfd_is_und_section (sym->section)
500 || bfd_is_com_section (sym->section))
501 continue;
502
503 *out_ptr++ = sym;
504 }
505 return out_ptr - symbols;
506 }
507
508 /* Sort symbols into value order. */
509
510 static int
511 compare_symbols (const void *ap, const void *bp)
512 {
513 const asymbol *a = * (const asymbol **) ap;
514 const asymbol *b = * (const asymbol **) bp;
515 const char *an;
516 const char *bn;
517 size_t anl;
518 size_t bnl;
519 bfd_boolean af;
520 bfd_boolean bf;
521 flagword aflags;
522 flagword bflags;
523
524 if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
525 return 1;
526 else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
527 return -1;
528
529 if (a->section > b->section)
530 return 1;
531 else if (a->section < b->section)
532 return -1;
533
534 an = bfd_asymbol_name (a);
535 bn = bfd_asymbol_name (b);
536 anl = strlen (an);
537 bnl = strlen (bn);
538
539 /* The symbols gnu_compiled and gcc2_compiled convey no real
540 information, so put them after other symbols with the same value. */
541 af = (strstr (an, "gnu_compiled") != NULL
542 || strstr (an, "gcc2_compiled") != NULL);
543 bf = (strstr (bn, "gnu_compiled") != NULL
544 || strstr (bn, "gcc2_compiled") != NULL);
545
546 if (af && ! bf)
547 return 1;
548 if (! af && bf)
549 return -1;
550
551 /* We use a heuristic for the file name, to try to sort it after
552 more useful symbols. It may not work on non Unix systems, but it
553 doesn't really matter; the only difference is precisely which
554 symbol names get printed. */
555
556 #define file_symbol(s, sn, snl) \
557 (((s)->flags & BSF_FILE) != 0 \
558 || ((sn)[(snl) - 2] == '.' \
559 && ((sn)[(snl) - 1] == 'o' \
560 || (sn)[(snl) - 1] == 'a')))
561
562 af = file_symbol (a, an, anl);
563 bf = file_symbol (b, bn, bnl);
564
565 if (af && ! bf)
566 return 1;
567 if (! af && bf)
568 return -1;
569
570 /* Try to sort global symbols before local symbols before function
571 symbols before debugging symbols. */
572
573 aflags = a->flags;
574 bflags = b->flags;
575
576 if ((aflags & BSF_DEBUGGING) != (bflags & BSF_DEBUGGING))
577 {
578 if ((aflags & BSF_DEBUGGING) != 0)
579 return 1;
580 else
581 return -1;
582 }
583 if ((aflags & BSF_FUNCTION) != (bflags & BSF_FUNCTION))
584 {
585 if ((aflags & BSF_FUNCTION) != 0)
586 return -1;
587 else
588 return 1;
589 }
590 if ((aflags & BSF_LOCAL) != (bflags & BSF_LOCAL))
591 {
592 if ((aflags & BSF_LOCAL) != 0)
593 return 1;
594 else
595 return -1;
596 }
597 if ((aflags & BSF_GLOBAL) != (bflags & BSF_GLOBAL))
598 {
599 if ((aflags & BSF_GLOBAL) != 0)
600 return -1;
601 else
602 return 1;
603 }
604
605 /* Symbols that start with '.' might be section names, so sort them
606 after symbols that don't start with '.'. */
607 if (an[0] == '.' && bn[0] != '.')
608 return 1;
609 if (an[0] != '.' && bn[0] == '.')
610 return -1;
611
612 /* Finally, if we can't distinguish them in any other way, try to
613 get consistent results by sorting the symbols by name. */
614 return strcmp (an, bn);
615 }
616
617 /* Sort relocs into address order. */
618
619 static int
620 compare_relocs (const void *ap, const void *bp)
621 {
622 const arelent *a = * (const arelent **) ap;
623 const arelent *b = * (const arelent **) bp;
624
625 if (a->address > b->address)
626 return 1;
627 else if (a->address < b->address)
628 return -1;
629
630 /* So that associated relocations tied to the same address show up
631 in the correct order, we don't do any further sorting. */
632 if (a > b)
633 return 1;
634 else if (a < b)
635 return -1;
636 else
637 return 0;
638 }
639
640 /* Print an address (VMA) to the output stream in INFO.
641 If SKIP_ZEROES is TRUE, omit leading zeroes. */
642
643 static void
644 objdump_print_value (bfd_vma vma, struct disassemble_info *info,
645 bfd_boolean skip_zeroes)
646 {
647 char buf[30];
648 char *p;
649 struct objdump_disasm_info *aux;
650
651 aux = (struct objdump_disasm_info *) info->application_data;
652 bfd_sprintf_vma (aux->abfd, buf, vma);
653 if (! skip_zeroes)
654 p = buf;
655 else
656 {
657 for (p = buf; *p == '0'; ++p)
658 ;
659 if (*p == '\0')
660 --p;
661 }
662 (*info->fprintf_func) (info->stream, "%s", p);
663 }
664
665 /* Print the name of a symbol. */
666
667 static void
668 objdump_print_symname (bfd *abfd, struct disassemble_info *info,
669 asymbol *sym)
670 {
671 char *alloc;
672 const char *name;
673
674 alloc = NULL;
675 name = bfd_asymbol_name (sym);
676 if (do_demangle && name[0] != '\0')
677 {
678 /* Demangle the name. */
679 alloc = bfd_demangle (abfd, name, DMGL_ANSI | DMGL_PARAMS);
680 if (alloc != NULL)
681 name = alloc;
682 }
683
684 if (info != NULL)
685 (*info->fprintf_func) (info->stream, "%s", name);
686 else
687 printf ("%s", name);
688
689 if (alloc != NULL)
690 free (alloc);
691 }
692
693 /* Locate a symbol given a bfd and a section (from INFO->application_data),
694 and a VMA. If INFO->application_data->require_sec is TRUE, then always
695 require the symbol to be in the section. Returns NULL if there is no
696 suitable symbol. If PLACE is not NULL, then *PLACE is set to the index
697 of the symbol in sorted_syms. */
698
699 static asymbol *
700 find_symbol_for_address (bfd_vma vma,
701 struct disassemble_info *info,
702 long *place)
703 {
704 /* @@ Would it speed things up to cache the last two symbols returned,
705 and maybe their address ranges? For many processors, only one memory
706 operand can be present at a time, so the 2-entry cache wouldn't be
707 constantly churned by code doing heavy memory accesses. */
708
709 /* Indices in `sorted_syms'. */
710 long min = 0;
711 long max = sorted_symcount;
712 long thisplace;
713 struct objdump_disasm_info *aux;
714 bfd *abfd;
715 asection *sec;
716 unsigned int opb;
717 bfd_boolean want_section;
718
719 if (sorted_symcount < 1)
720 return NULL;
721
722 aux = (struct objdump_disasm_info *) info->application_data;
723 abfd = aux->abfd;
724 sec = aux->sec;
725 opb = bfd_octets_per_byte (abfd);
726
727 /* Perform a binary search looking for the closest symbol to the
728 required value. We are searching the range (min, max]. */
729 while (min + 1 < max)
730 {
731 asymbol *sym;
732
733 thisplace = (max + min) / 2;
734 sym = sorted_syms[thisplace];
735
736 if (bfd_asymbol_value (sym) > vma)
737 max = thisplace;
738 else if (bfd_asymbol_value (sym) < vma)
739 min = thisplace;
740 else
741 {
742 min = thisplace;
743 break;
744 }
745 }
746
747 /* The symbol we want is now in min, the low end of the range we
748 were searching. If there are several symbols with the same
749 value, we want the first one. */
750 thisplace = min;
751 while (thisplace > 0
752 && (bfd_asymbol_value (sorted_syms[thisplace])
753 == bfd_asymbol_value (sorted_syms[thisplace - 1])))
754 --thisplace;
755
756 /* Prefer a symbol in the current section if we have multple symbols
757 with the same value, as can occur with overlays or zero size
758 sections. */
759 min = thisplace;
760 while (min < max
761 && (bfd_asymbol_value (sorted_syms[min])
762 == bfd_asymbol_value (sorted_syms[thisplace])))
763 {
764 if (sorted_syms[min]->section == sec
765 && info->symbol_is_valid (sorted_syms[min], info))
766 {
767 thisplace = min;
768
769 if (place != NULL)
770 *place = thisplace;
771
772 return sorted_syms[thisplace];
773 }
774 ++min;
775 }
776
777 /* If the file is relocatable, and the symbol could be from this
778 section, prefer a symbol from this section over symbols from
779 others, even if the other symbol's value might be closer.
780
781 Note that this may be wrong for some symbol references if the
782 sections have overlapping memory ranges, but in that case there's
783 no way to tell what's desired without looking at the relocation
784 table.
785
786 Also give the target a chance to reject symbols. */
787 want_section = (aux->require_sec
788 || ((abfd->flags & HAS_RELOC) != 0
789 && vma >= bfd_get_section_vma (abfd, sec)
790 && vma < (bfd_get_section_vma (abfd, sec)
791 + bfd_section_size (abfd, sec) / opb)));
792 if ((sorted_syms[thisplace]->section != sec && want_section)
793 || !info->symbol_is_valid (sorted_syms[thisplace], info))
794 {
795 long i;
796 long newplace = sorted_symcount;
797
798 for (i = min - 1; i >= 0; i--)
799 {
800 if ((sorted_syms[i]->section == sec || !want_section)
801 && info->symbol_is_valid (sorted_syms[i], info))
802 {
803 if (newplace == sorted_symcount)
804 newplace = i;
805
806 if (bfd_asymbol_value (sorted_syms[i])
807 != bfd_asymbol_value (sorted_syms[newplace]))
808 break;
809
810 /* Remember this symbol and keep searching until we reach
811 an earlier address. */
812 newplace = i;
813 }
814 }
815
816 if (newplace != sorted_symcount)
817 thisplace = newplace;
818 else
819 {
820 /* We didn't find a good symbol with a smaller value.
821 Look for one with a larger value. */
822 for (i = thisplace + 1; i < sorted_symcount; i++)
823 {
824 if ((sorted_syms[i]->section == sec || !want_section)
825 && info->symbol_is_valid (sorted_syms[i], info))
826 {
827 thisplace = i;
828 break;
829 }
830 }
831 }
832
833 if ((sorted_syms[thisplace]->section != sec && want_section)
834 || !info->symbol_is_valid (sorted_syms[thisplace], info))
835 /* There is no suitable symbol. */
836 return NULL;
837 }
838
839 if (place != NULL)
840 *place = thisplace;
841
842 return sorted_syms[thisplace];
843 }
844
845 /* Print an address and the offset to the nearest symbol. */
846
847 static void
848 objdump_print_addr_with_sym (bfd *abfd, asection *sec, asymbol *sym,
849 bfd_vma vma, struct disassemble_info *info,
850 bfd_boolean skip_zeroes)
851 {
852 objdump_print_value (vma, info, skip_zeroes);
853
854 if (sym == NULL)
855 {
856 bfd_vma secaddr;
857
858 (*info->fprintf_func) (info->stream, " <%s",
859 bfd_get_section_name (abfd, sec));
860 secaddr = bfd_get_section_vma (abfd, sec);
861 if (vma < secaddr)
862 {
863 (*info->fprintf_func) (info->stream, "-0x");
864 objdump_print_value (secaddr - vma, info, TRUE);
865 }
866 else if (vma > secaddr)
867 {
868 (*info->fprintf_func) (info->stream, "+0x");
869 objdump_print_value (vma - secaddr, info, TRUE);
870 }
871 (*info->fprintf_func) (info->stream, ">");
872 }
873 else
874 {
875 (*info->fprintf_func) (info->stream, " <");
876 objdump_print_symname (abfd, info, sym);
877 if (bfd_asymbol_value (sym) > vma)
878 {
879 (*info->fprintf_func) (info->stream, "-0x");
880 objdump_print_value (bfd_asymbol_value (sym) - vma, info, TRUE);
881 }
882 else if (vma > bfd_asymbol_value (sym))
883 {
884 (*info->fprintf_func) (info->stream, "+0x");
885 objdump_print_value (vma - bfd_asymbol_value (sym), info, TRUE);
886 }
887 (*info->fprintf_func) (info->stream, ">");
888 }
889
890 if (display_file_offsets)
891 info->fprintf_func (info->stream, _(" (File Offset: 0x%lx)"),
892 (long int)(sec->filepos + (vma - sec->vma)));
893 }
894
895 /* Print an address (VMA), symbolically if possible.
896 If SKIP_ZEROES is TRUE, don't output leading zeroes. */
897
898 static void
899 objdump_print_addr (bfd_vma vma,
900 struct disassemble_info *info,
901 bfd_boolean skip_zeroes)
902 {
903 struct objdump_disasm_info *aux;
904 asymbol *sym = NULL;
905 bfd_boolean skip_find = FALSE;
906
907 aux = (struct objdump_disasm_info *) info->application_data;
908
909 if (sorted_symcount < 1)
910 {
911 (*info->fprintf_func) (info->stream, "0x");
912 objdump_print_value (vma, info, skip_zeroes);
913
914 if (display_file_offsets)
915 info->fprintf_func (info->stream, _(" (File Offset: 0x%lx)"),
916 (long int)(aux->sec->filepos + (vma - aux->sec->vma)));
917 return;
918 }
919
920 if (aux->reloc != NULL
921 && aux->reloc->sym_ptr_ptr != NULL
922 && * aux->reloc->sym_ptr_ptr != NULL)
923 {
924 sym = * aux->reloc->sym_ptr_ptr;
925
926 /* Adjust the vma to the reloc. */
927 vma += bfd_asymbol_value (sym);
928
929 if (bfd_is_und_section (bfd_get_section (sym)))
930 skip_find = TRUE;
931 }
932
933 if (!skip_find)
934 sym = find_symbol_for_address (vma, info, NULL);
935
936 objdump_print_addr_with_sym (aux->abfd, aux->sec, sym, vma, info,
937 skip_zeroes);
938 }
939
940 /* Print VMA to INFO. This function is passed to the disassembler
941 routine. */
942
943 static void
944 objdump_print_address (bfd_vma vma, struct disassemble_info *info)
945 {
946 objdump_print_addr (vma, info, ! prefix_addresses);
947 }
948
949 /* Determine if the given address has a symbol associated with it. */
950
951 static int
952 objdump_symbol_at_address (bfd_vma vma, struct disassemble_info * info)
953 {
954 asymbol * sym;
955
956 sym = find_symbol_for_address (vma, info, NULL);
957
958 return (sym != NULL && (bfd_asymbol_value (sym) == vma));
959 }
960
961 /* Hold the last function name and the last line number we displayed
962 in a disassembly. */
963
964 static char *prev_functionname;
965 static unsigned int prev_line;
966
967 /* We keep a list of all files that we have seen when doing a
968 disassembly with source, so that we know how much of the file to
969 display. This can be important for inlined functions. */
970
971 struct print_file_list
972 {
973 struct print_file_list *next;
974 const char *filename;
975 const char *modname;
976 const char *map;
977 size_t mapsize;
978 const char **linemap;
979 unsigned maxline;
980 unsigned last_line;
981 int first;
982 };
983
984 static struct print_file_list *print_files;
985
986 /* The number of preceding context lines to show when we start
987 displaying a file for the first time. */
988
989 #define SHOW_PRECEDING_CONTEXT_LINES (5)
990
991 /* Read a complete file into memory. */
992
993 static const char *
994 slurp_file (const char *fn, size_t *size)
995 {
996 #ifdef HAVE_MMAP
997 int ps = getpagesize ();
998 size_t msize;
999 #endif
1000 const char *map;
1001 struct stat st;
1002 int fd = open (fn, O_RDONLY | O_BINARY);
1003
1004 if (fd < 0)
1005 return NULL;
1006 if (fstat (fd, &st) < 0)
1007 return NULL;
1008 *size = st.st_size;
1009 #ifdef HAVE_MMAP
1010 msize = (*size + ps - 1) & ~(ps - 1);
1011 map = mmap (NULL, msize, PROT_READ, MAP_SHARED, fd, 0);
1012 if (map != (char *)-1L)
1013 {
1014 close(fd);
1015 return map;
1016 }
1017 #endif
1018 map = malloc (*size);
1019 if (!map || (size_t) read (fd, (char *)map, *size) != *size)
1020 {
1021 free ((void *)map);
1022 map = NULL;
1023 }
1024 close (fd);
1025 return map;
1026 }
1027
1028 #define line_map_decrease 5
1029
1030 /* Precompute array of lines for a mapped file. */
1031
1032 static const char **
1033 index_file (const char *map, size_t size, unsigned int *maxline)
1034 {
1035 const char *p, *lstart, *end;
1036 int chars_per_line = 45; /* First iteration will use 40. */
1037 unsigned int lineno;
1038 const char **linemap = NULL;
1039 unsigned long line_map_size = 0;
1040
1041 lineno = 0;
1042 lstart = map;
1043 end = map + size;
1044
1045 for (p = map; p < end; p++)
1046 {
1047 if (*p == '\n')
1048 {
1049 if (p + 1 < end && p[1] == '\r')
1050 p++;
1051 }
1052 else if (*p == '\r')
1053 {
1054 if (p + 1 < end && p[1] == '\n')
1055 p++;
1056 }
1057 else
1058 continue;
1059
1060 /* End of line found. */
1061
1062 if (linemap == NULL || line_map_size < lineno + 1)
1063 {
1064 unsigned long newsize;
1065
1066 chars_per_line -= line_map_decrease;
1067 if (chars_per_line <= 1)
1068 chars_per_line = 1;
1069 line_map_size = size / chars_per_line + 1;
1070 if (line_map_size < lineno + 1)
1071 line_map_size = lineno + 1;
1072 newsize = line_map_size * sizeof (char *);
1073 linemap = xrealloc (linemap, newsize);
1074 }
1075
1076 linemap[lineno++] = lstart;
1077 lstart = p + 1;
1078 }
1079
1080 *maxline = lineno;
1081 return linemap;
1082 }
1083
1084 /* Tries to open MODNAME, and if successful adds a node to print_files
1085 linked list and returns that node. Returns NULL on failure. */
1086
1087 static struct print_file_list *
1088 try_print_file_open (const char *origname, const char *modname)
1089 {
1090 struct print_file_list *p;
1091
1092 p = xmalloc (sizeof (struct print_file_list));
1093
1094 p->map = slurp_file (modname, &p->mapsize);
1095 if (p->map == NULL)
1096 {
1097 free (p);
1098 return NULL;
1099 }
1100
1101 p->linemap = index_file (p->map, p->mapsize, &p->maxline);
1102 p->last_line = 0;
1103 p->filename = origname;
1104 p->modname = modname;
1105 p->next = print_files;
1106 p->first = 1;
1107 print_files = p;
1108 return p;
1109 }
1110
1111 /* If the the source file, as described in the symtab, is not found
1112 try to locate it in one of the paths specified with -I
1113 If found, add location to print_files linked list. */
1114
1115 static struct print_file_list *
1116 update_source_path (const char *filename)
1117 {
1118 struct print_file_list *p;
1119 const char *fname;
1120 int i;
1121
1122 if (filename == NULL)
1123 return NULL;
1124
1125 p = try_print_file_open (filename, filename);
1126 if (p != NULL)
1127 return p;
1128
1129 if (include_path_count == 0)
1130 return NULL;
1131
1132 /* Get the name of the file. */
1133 fname = strrchr (filename, '/');
1134 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
1135 {
1136 /* We could have a mixed forward/back slash case. */
1137 char *backslash = strrchr (filename, '\\');
1138 if (fname == NULL || (backslash != NULL && backslash > fname))
1139 fname = backslash;
1140 if (fname == NULL && filename[0] != '\0' && filename[1] == ':')
1141 fname = filename + 1;
1142 }
1143 #endif
1144 if (fname == NULL)
1145 fname = filename;
1146 else
1147 ++fname;
1148
1149 /* If file exists under a new path, we need to add it to the list
1150 so that show_line knows about it. */
1151 for (i = 0; i < include_path_count; i++)
1152 {
1153 char *modname = concat (include_paths[i], "/", fname, (const char *) 0);
1154
1155 p = try_print_file_open (filename, modname);
1156 if (p)
1157 return p;
1158
1159 free (modname);
1160 }
1161
1162 return NULL;
1163 }
1164
1165 /* Print a source file line. */
1166
1167 static void
1168 print_line (struct print_file_list *p, unsigned int line)
1169 {
1170 const char *l;
1171 size_t len;
1172
1173 --line;
1174 if (line >= p->maxline)
1175 return;
1176 l = p->linemap [line];
1177 /* Test fwrite return value to quiet glibc warning. */
1178 len = strcspn (l, "\n\r");
1179 if (len == 0 || fwrite (l, len, 1, stdout) == 1)
1180 putchar ('\n');
1181 }
1182
1183 /* Print a range of source code lines. */
1184
1185 static void
1186 dump_lines (struct print_file_list *p, unsigned int start, unsigned int end)
1187 {
1188 if (p->map == NULL)
1189 return;
1190 while (start <= end)
1191 {
1192 print_line (p, start);
1193 start++;
1194 }
1195 }
1196
1197 /* Show the line number, or the source line, in a disassembly
1198 listing. */
1199
1200 static void
1201 show_line (bfd *abfd, asection *section, bfd_vma addr_offset)
1202 {
1203 const char *filename;
1204 const char *functionname;
1205 unsigned int line;
1206 bfd_boolean reloc;
1207
1208 if (! with_line_numbers && ! with_source_code)
1209 return;
1210
1211 if (! bfd_find_nearest_line (abfd, section, syms, addr_offset, &filename,
1212 &functionname, &line))
1213 return;
1214
1215 if (filename != NULL && *filename == '\0')
1216 filename = NULL;
1217 if (functionname != NULL && *functionname == '\0')
1218 functionname = NULL;
1219
1220 if (filename
1221 && IS_ABSOLUTE_PATH (filename)
1222 && prefix)
1223 {
1224 char *path_up;
1225 const char *fname = filename;
1226 char *path = (char *) alloca (prefix_length + PATH_MAX + 1);
1227
1228 if (prefix_length)
1229 memcpy (path, prefix, prefix_length);
1230 path_up = path + prefix_length;
1231
1232 /* Build relocated filename, stripping off leading directories
1233 from the initial filename if requested. */
1234 if (prefix_strip > 0)
1235 {
1236 int level = 0;
1237 const char *s;
1238
1239 /* Skip selected directory levels. */
1240 for (s = fname + 1; *s != '\0' && level < prefix_strip; s++)
1241 if (IS_DIR_SEPARATOR(*s))
1242 {
1243 fname = s;
1244 level++;
1245 }
1246 }
1247
1248 /* Update complete filename. */
1249 strncpy (path_up, fname, PATH_MAX);
1250 path_up[PATH_MAX] = '\0';
1251
1252 filename = path;
1253 reloc = TRUE;
1254 }
1255 else
1256 reloc = FALSE;
1257
1258 if (with_line_numbers)
1259 {
1260 if (functionname != NULL
1261 && (prev_functionname == NULL
1262 || strcmp (functionname, prev_functionname) != 0))
1263 printf ("%s():\n", functionname);
1264 if (line > 0 && line != prev_line)
1265 printf ("%s:%u\n", filename == NULL ? "???" : filename, line);
1266 }
1267
1268 if (with_source_code
1269 && filename != NULL
1270 && line > 0)
1271 {
1272 struct print_file_list **pp, *p;
1273 unsigned l;
1274
1275 for (pp = &print_files; *pp != NULL; pp = &(*pp)->next)
1276 if (strcmp ((*pp)->filename, filename) == 0)
1277 break;
1278 p = *pp;
1279
1280 if (p == NULL)
1281 {
1282 if (reloc)
1283 filename = xstrdup (filename);
1284 p = update_source_path (filename);
1285 }
1286
1287 if (p != NULL && line != p->last_line)
1288 {
1289 if (file_start_context && p->first)
1290 l = 1;
1291 else
1292 {
1293 l = line - SHOW_PRECEDING_CONTEXT_LINES;
1294 if (l >= line)
1295 l = 1;
1296 if (p->last_line >= l && p->last_line <= line)
1297 l = p->last_line + 1;
1298 }
1299 dump_lines (p, l, line);
1300 p->last_line = line;
1301 p->first = 0;
1302 }
1303 }
1304
1305 if (functionname != NULL
1306 && (prev_functionname == NULL
1307 || strcmp (functionname, prev_functionname) != 0))
1308 {
1309 if (prev_functionname != NULL)
1310 free (prev_functionname);
1311 prev_functionname = xmalloc (strlen (functionname) + 1);
1312 strcpy (prev_functionname, functionname);
1313 }
1314
1315 if (line > 0 && line != prev_line)
1316 prev_line = line;
1317 }
1318
1319 /* Pseudo FILE object for strings. */
1320 typedef struct
1321 {
1322 char *buffer;
1323 size_t pos;
1324 size_t alloc;
1325 } SFILE;
1326
1327 /* sprintf to a "stream". */
1328
1329 static int ATTRIBUTE_PRINTF_2
1330 objdump_sprintf (SFILE *f, const char *format, ...)
1331 {
1332 size_t n;
1333 va_list args;
1334
1335 while (1)
1336 {
1337 size_t space = f->alloc - f->pos;
1338
1339 va_start (args, format);
1340 n = vsnprintf (f->buffer + f->pos, space, format, args);
1341 va_end (args);
1342
1343 if (space > n)
1344 break;
1345
1346 f->alloc = (f->alloc + n) * 2;
1347 f->buffer = xrealloc (f->buffer, f->alloc);
1348 }
1349 f->pos += n;
1350
1351 return n;
1352 }
1353
1354 /* Returns TRUE if the specified section should be dumped. */
1355
1356 static bfd_boolean
1357 process_section_p (asection * section)
1358 {
1359 size_t i;
1360
1361 if (only == NULL)
1362 return TRUE;
1363
1364 for (i = 0; i < only_used; i++)
1365 if (strcmp (only [i], section->name) == 0)
1366 return TRUE;
1367
1368 return FALSE;
1369 }
1370
1371
1372 /* The number of zeroes we want to see before we start skipping them.
1373 The number is arbitrarily chosen. */
1374
1375 #define DEFAULT_SKIP_ZEROES 8
1376
1377 /* The number of zeroes to skip at the end of a section. If the
1378 number of zeroes at the end is between SKIP_ZEROES_AT_END and
1379 SKIP_ZEROES, they will be disassembled. If there are fewer than
1380 SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic
1381 attempt to avoid disassembling zeroes inserted by section
1382 alignment. */
1383
1384 #define DEFAULT_SKIP_ZEROES_AT_END 3
1385
1386 /* Disassemble some data in memory between given values. */
1387
1388 static void
1389 disassemble_bytes (struct disassemble_info * info,
1390 disassembler_ftype disassemble_fn,
1391 bfd_boolean insns,
1392 bfd_byte * data,
1393 bfd_vma start_offset,
1394 bfd_vma stop_offset,
1395 bfd_vma rel_offset,
1396 arelent *** relppp,
1397 arelent ** relppend)
1398 {
1399 struct objdump_disasm_info *aux;
1400 asection *section;
1401 int octets_per_line;
1402 bfd_boolean done_dot;
1403 int skip_addr_chars;
1404 bfd_vma addr_offset;
1405 unsigned int opb = info->octets_per_byte;
1406 unsigned int skip_zeroes = info->skip_zeroes;
1407 unsigned int skip_zeroes_at_end = info->skip_zeroes_at_end;
1408 int octets = opb;
1409 SFILE sfile;
1410
1411 aux = (struct objdump_disasm_info *) info->application_data;
1412 section = aux->sec;
1413
1414 sfile.alloc = 120;
1415 sfile.buffer = xmalloc (sfile.alloc);
1416 sfile.pos = 0;
1417
1418 if (insns)
1419 octets_per_line = 4;
1420 else
1421 octets_per_line = 16;
1422
1423 /* Figure out how many characters to skip at the start of an
1424 address, to make the disassembly look nicer. We discard leading
1425 zeroes in chunks of 4, ensuring that there is always a leading
1426 zero remaining. */
1427 skip_addr_chars = 0;
1428 if (! prefix_addresses)
1429 {
1430 char buf[30];
1431
1432 bfd_sprintf_vma (aux->abfd, buf, section->vma + section->size / opb);
1433
1434 while (buf[skip_addr_chars] == '0')
1435 ++skip_addr_chars;
1436
1437 /* Don't discard zeros on overflow. */
1438 if (buf[skip_addr_chars] == '\0' && section->vma != 0)
1439 skip_addr_chars = 0;
1440
1441 if (skip_addr_chars != 0)
1442 skip_addr_chars = (skip_addr_chars - 1) & -4;
1443 }
1444
1445 info->insn_info_valid = 0;
1446
1447 done_dot = FALSE;
1448 addr_offset = start_offset;
1449 while (addr_offset < stop_offset)
1450 {
1451 bfd_vma z;
1452 bfd_boolean need_nl = FALSE;
1453 int previous_octets;
1454
1455 /* Remember the length of the previous instruction. */
1456 previous_octets = octets;
1457 octets = 0;
1458
1459 /* If we see more than SKIP_ZEROES octets of zeroes, we just
1460 print `...'. */
1461 for (z = addr_offset * opb; z < stop_offset * opb; z++)
1462 if (data[z] != 0)
1463 break;
1464 if (! disassemble_zeroes
1465 && (info->insn_info_valid == 0
1466 || info->branch_delay_insns == 0)
1467 && (z - addr_offset * opb >= skip_zeroes
1468 || (z == stop_offset * opb &&
1469 z - addr_offset * opb < skip_zeroes_at_end)))
1470 {
1471 /* If there are more nonzero octets to follow, we only skip
1472 zeroes in multiples of 4, to try to avoid running over
1473 the start of an instruction which happens to start with
1474 zero. */
1475 if (z != stop_offset * opb)
1476 z = addr_offset * opb + ((z - addr_offset * opb) &~ 3);
1477
1478 octets = z - addr_offset * opb;
1479
1480 /* If we are going to display more data, and we are displaying
1481 file offsets, then tell the user how many zeroes we skip
1482 and the file offset from where we resume dumping. */
1483 if (display_file_offsets && ((addr_offset + (octets / opb)) < stop_offset))
1484 printf ("\t... (skipping %d zeroes, resuming at file offset: 0x%lx)\n",
1485 octets / opb,
1486 (unsigned long) (section->filepos
1487 + (addr_offset + (octets / opb))));
1488 else
1489 printf ("\t...\n");
1490 }
1491 else
1492 {
1493 char buf[50];
1494 int bpc = 0;
1495 int pb = 0;
1496
1497 done_dot = FALSE;
1498
1499 if (with_line_numbers || with_source_code)
1500 show_line (aux->abfd, section, addr_offset);
1501
1502 if (! prefix_addresses)
1503 {
1504 char *s;
1505
1506 bfd_sprintf_vma (aux->abfd, buf, section->vma + addr_offset);
1507 for (s = buf + skip_addr_chars; *s == '0'; s++)
1508 *s = ' ';
1509 if (*s == '\0')
1510 *--s = '0';
1511 printf ("%s:\t", buf + skip_addr_chars);
1512 }
1513 else
1514 {
1515 aux->require_sec = TRUE;
1516 objdump_print_address (section->vma + addr_offset, info);
1517 aux->require_sec = FALSE;
1518 putchar (' ');
1519 }
1520
1521 if (insns)
1522 {
1523 sfile.pos = 0;
1524 info->fprintf_func = (fprintf_ftype) objdump_sprintf;
1525 info->stream = &sfile;
1526 info->bytes_per_line = 0;
1527 info->bytes_per_chunk = 0;
1528 info->flags = disassemble_all ? DISASSEMBLE_DATA : 0;
1529
1530 if (info->disassembler_needs_relocs
1531 && (bfd_get_file_flags (aux->abfd) & EXEC_P) == 0
1532 && (bfd_get_file_flags (aux->abfd) & DYNAMIC) == 0
1533 && *relppp < relppend)
1534 {
1535 bfd_signed_vma distance_to_rel;
1536
1537 distance_to_rel = (**relppp)->address
1538 - (rel_offset + addr_offset);
1539
1540 /* Check to see if the current reloc is associated with
1541 the instruction that we are about to disassemble. */
1542 if (distance_to_rel == 0
1543 /* FIXME: This is wrong. We are trying to catch
1544 relocs that are addressed part way through the
1545 current instruction, as might happen with a packed
1546 VLIW instruction. Unfortunately we do not know the
1547 length of the current instruction since we have not
1548 disassembled it yet. Instead we take a guess based
1549 upon the length of the previous instruction. The
1550 proper solution is to have a new target-specific
1551 disassembler function which just returns the length
1552 of an instruction at a given address without trying
1553 to display its disassembly. */
1554 || (distance_to_rel > 0
1555 && distance_to_rel < (bfd_signed_vma) (previous_octets/ opb)))
1556 {
1557 info->flags |= INSN_HAS_RELOC;
1558 aux->reloc = **relppp;
1559 }
1560 else
1561 aux->reloc = NULL;
1562 }
1563
1564 octets = (*disassemble_fn) (section->vma + addr_offset, info);
1565 info->fprintf_func = (fprintf_ftype) fprintf;
1566 info->stream = stdout;
1567 if (info->bytes_per_line != 0)
1568 octets_per_line = info->bytes_per_line;
1569 if (octets < 0)
1570 {
1571 if (sfile.pos)
1572 printf ("%s\n", sfile.buffer);
1573 break;
1574 }
1575 }
1576 else
1577 {
1578 bfd_vma j;
1579
1580 octets = octets_per_line;
1581 if (addr_offset + octets / opb > stop_offset)
1582 octets = (stop_offset - addr_offset) * opb;
1583
1584 for (j = addr_offset * opb; j < addr_offset * opb + octets; ++j)
1585 {
1586 if (ISPRINT (data[j]))
1587 buf[j - addr_offset * opb] = data[j];
1588 else
1589 buf[j - addr_offset * opb] = '.';
1590 }
1591 buf[j - addr_offset * opb] = '\0';
1592 }
1593
1594 if (prefix_addresses
1595 ? show_raw_insn > 0
1596 : show_raw_insn >= 0)
1597 {
1598 bfd_vma j;
1599
1600 /* If ! prefix_addresses and ! wide_output, we print
1601 octets_per_line octets per line. */
1602 pb = octets;
1603 if (pb > octets_per_line && ! prefix_addresses && ! wide_output)
1604 pb = octets_per_line;
1605
1606 if (info->bytes_per_chunk)
1607 bpc = info->bytes_per_chunk;
1608 else
1609 bpc = 1;
1610
1611 for (j = addr_offset * opb; j < addr_offset * opb + pb; j += bpc)
1612 {
1613 int k;
1614
1615 if (bpc > 1 && info->display_endian == BFD_ENDIAN_LITTLE)
1616 {
1617 for (k = bpc - 1; k >= 0; k--)
1618 printf ("%02x", (unsigned) data[j + k]);
1619 putchar (' ');
1620 }
1621 else
1622 {
1623 for (k = 0; k < bpc; k++)
1624 printf ("%02x", (unsigned) data[j + k]);
1625 putchar (' ');
1626 }
1627 }
1628
1629 for (; pb < octets_per_line; pb += bpc)
1630 {
1631 int k;
1632
1633 for (k = 0; k < bpc; k++)
1634 printf (" ");
1635 putchar (' ');
1636 }
1637
1638 /* Separate raw data from instruction by extra space. */
1639 if (insns)
1640 putchar ('\t');
1641 else
1642 printf (" ");
1643 }
1644
1645 if (! insns)
1646 printf ("%s", buf);
1647 else if (sfile.pos)
1648 printf ("%s", sfile.buffer);
1649
1650 if (prefix_addresses
1651 ? show_raw_insn > 0
1652 : show_raw_insn >= 0)
1653 {
1654 while (pb < octets)
1655 {
1656 bfd_vma j;
1657 char *s;
1658
1659 putchar ('\n');
1660 j = addr_offset * opb + pb;
1661
1662 bfd_sprintf_vma (aux->abfd, buf, section->vma + j / opb);
1663 for (s = buf + skip_addr_chars; *s == '0'; s++)
1664 *s = ' ';
1665 if (*s == '\0')
1666 *--s = '0';
1667 printf ("%s:\t", buf + skip_addr_chars);
1668
1669 pb += octets_per_line;
1670 if (pb > octets)
1671 pb = octets;
1672 for (; j < addr_offset * opb + pb; j += bpc)
1673 {
1674 int k;
1675
1676 if (bpc > 1 && info->display_endian == BFD_ENDIAN_LITTLE)
1677 {
1678 for (k = bpc - 1; k >= 0; k--)
1679 printf ("%02x", (unsigned) data[j + k]);
1680 putchar (' ');
1681 }
1682 else
1683 {
1684 for (k = 0; k < bpc; k++)
1685 printf ("%02x", (unsigned) data[j + k]);
1686 putchar (' ');
1687 }
1688 }
1689 }
1690 }
1691
1692 if (!wide_output)
1693 putchar ('\n');
1694 else
1695 need_nl = TRUE;
1696 }
1697
1698 while ((*relppp) < relppend
1699 && (**relppp)->address < rel_offset + addr_offset + octets / opb)
1700 {
1701 if (dump_reloc_info || dump_dynamic_reloc_info)
1702 {
1703 arelent *q;
1704
1705 q = **relppp;
1706
1707 if (wide_output)
1708 putchar ('\t');
1709 else
1710 printf ("\t\t\t");
1711
1712 objdump_print_value (section->vma - rel_offset + q->address,
1713 info, TRUE);
1714
1715 if (q->howto == NULL)
1716 printf (": *unknown*\t");
1717 else if (q->howto->name)
1718 printf (": %s\t", q->howto->name);
1719 else
1720 printf (": %d\t", q->howto->type);
1721
1722 if (q->sym_ptr_ptr == NULL || *q->sym_ptr_ptr == NULL)
1723 printf ("*unknown*");
1724 else
1725 {
1726 const char *sym_name;
1727
1728 sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
1729 if (sym_name != NULL && *sym_name != '\0')
1730 objdump_print_symname (aux->abfd, info, *q->sym_ptr_ptr);
1731 else
1732 {
1733 asection *sym_sec;
1734
1735 sym_sec = bfd_get_section (*q->sym_ptr_ptr);
1736 sym_name = bfd_get_section_name (aux->abfd, sym_sec);
1737 if (sym_name == NULL || *sym_name == '\0')
1738 sym_name = "*unknown*";
1739 printf ("%s", sym_name);
1740 }
1741 }
1742
1743 if (q->addend)
1744 {
1745 printf ("+0x");
1746 objdump_print_value (q->addend, info, TRUE);
1747 }
1748
1749 printf ("\n");
1750 need_nl = FALSE;
1751 }
1752 ++(*relppp);
1753 }
1754
1755 if (need_nl)
1756 printf ("\n");
1757
1758 addr_offset += octets / opb;
1759 }
1760
1761 free (sfile.buffer);
1762 }
1763
1764 static void
1765 disassemble_section (bfd *abfd, asection *section, void *info)
1766 {
1767 const struct elf_backend_data * bed;
1768 bfd_vma sign_adjust = 0;
1769 struct disassemble_info * pinfo = (struct disassemble_info *) info;
1770 struct objdump_disasm_info * paux;
1771 unsigned int opb = pinfo->octets_per_byte;
1772 bfd_byte * data = NULL;
1773 bfd_size_type datasize = 0;
1774 arelent ** rel_pp = NULL;
1775 arelent ** rel_ppstart = NULL;
1776 arelent ** rel_ppend;
1777 unsigned long stop_offset;
1778 asymbol * sym = NULL;
1779 long place = 0;
1780 long rel_count;
1781 bfd_vma rel_offset;
1782 unsigned long addr_offset;
1783
1784 /* Sections that do not contain machine
1785 code are not normally disassembled. */
1786 if (! disassemble_all
1787 && only == NULL
1788 && ((section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
1789 != (SEC_CODE | SEC_HAS_CONTENTS)))
1790 return;
1791
1792 if (! process_section_p (section))
1793 return;
1794
1795 datasize = bfd_get_section_size (section);
1796 if (datasize == 0)
1797 return;
1798
1799 /* Decide which set of relocs to use. Load them if necessary. */
1800 paux = (struct objdump_disasm_info *) pinfo->application_data;
1801 if (paux->dynrelbuf)
1802 {
1803 rel_pp = paux->dynrelbuf;
1804 rel_count = paux->dynrelcount;
1805 /* Dynamic reloc addresses are absolute, non-dynamic are section
1806 relative. REL_OFFSET specifies the reloc address corresponding
1807 to the start of this section. */
1808 rel_offset = section->vma;
1809 }
1810 else
1811 {
1812 rel_count = 0;
1813 rel_pp = NULL;
1814 rel_offset = 0;
1815
1816 if ((section->flags & SEC_RELOC) != 0
1817 && (dump_reloc_info || pinfo->disassembler_needs_relocs))
1818 {
1819 long relsize;
1820
1821 relsize = bfd_get_reloc_upper_bound (abfd, section);
1822 if (relsize < 0)
1823 bfd_fatal (bfd_get_filename (abfd));
1824
1825 if (relsize > 0)
1826 {
1827 rel_ppstart = rel_pp = xmalloc (relsize);
1828 rel_count = bfd_canonicalize_reloc (abfd, section, rel_pp, syms);
1829 if (rel_count < 0)
1830 bfd_fatal (bfd_get_filename (abfd));
1831
1832 /* Sort the relocs by address. */
1833 qsort (rel_pp, rel_count, sizeof (arelent *), compare_relocs);
1834 }
1835 }
1836 }
1837 rel_ppend = rel_pp + rel_count;
1838
1839 data = xmalloc (datasize);
1840
1841 bfd_get_section_contents (abfd, section, data, 0, datasize);
1842
1843 paux->sec = section;
1844 pinfo->buffer = data;
1845 pinfo->buffer_vma = section->vma;
1846 pinfo->buffer_length = datasize;
1847 pinfo->section = section;
1848
1849 if (start_address == (bfd_vma) -1
1850 || start_address < pinfo->buffer_vma)
1851 addr_offset = 0;
1852 else
1853 addr_offset = start_address - pinfo->buffer_vma;
1854
1855 if (stop_address == (bfd_vma) -1)
1856 stop_offset = datasize / opb;
1857 else
1858 {
1859 if (stop_address < pinfo->buffer_vma)
1860 stop_offset = 0;
1861 else
1862 stop_offset = stop_address - pinfo->buffer_vma;
1863 if (stop_offset > pinfo->buffer_length / opb)
1864 stop_offset = pinfo->buffer_length / opb;
1865 }
1866
1867 /* Skip over the relocs belonging to addresses below the
1868 start address. */
1869 while (rel_pp < rel_ppend
1870 && (*rel_pp)->address < rel_offset + addr_offset)
1871 ++rel_pp;
1872
1873 if (addr_offset < stop_offset)
1874 printf (_("\nDisassembly of section %s:\n"), section->name);
1875
1876 /* Find the nearest symbol forwards from our current position. */
1877 paux->require_sec = TRUE;
1878 sym = find_symbol_for_address (section->vma + addr_offset, info, &place);
1879 paux->require_sec = FALSE;
1880
1881 /* PR 9774: If the target used signed 32-bit addresses then we must make
1882 sure that we sign extend the value that we calculate for 'addr' in the
1883 loop below. */
1884 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
1885 && (bed = get_elf_backend_data (abfd)) != NULL
1886 && bed->sign_extend_vma)
1887 sign_adjust = 0x80000000;
1888
1889 /* Disassemble a block of instructions up to the address associated with
1890 the symbol we have just found. Then print the symbol and find the
1891 next symbol on. Repeat until we have disassembled the entire section
1892 or we have reached the end of the address range we are interested in. */
1893 while (addr_offset < stop_offset)
1894 {
1895 bfd_vma addr;
1896 asymbol *nextsym;
1897 unsigned long nextstop_offset;
1898 bfd_boolean insns;
1899
1900 addr = section->vma + addr_offset;
1901 addr = ((addr & ((sign_adjust << 1) - 1)) ^ sign_adjust) - sign_adjust;
1902
1903 if (sym != NULL && bfd_asymbol_value (sym) <= addr)
1904 {
1905 int x;
1906
1907 for (x = place;
1908 (x < sorted_symcount
1909 && (bfd_asymbol_value (sorted_syms[x]) <= addr));
1910 ++x)
1911 continue;
1912
1913 pinfo->symbols = sorted_syms + place;
1914 pinfo->num_symbols = x - place;
1915 pinfo->symtab_pos = place;
1916 }
1917 else
1918 {
1919 pinfo->symbols = NULL;
1920 pinfo->num_symbols = 0;
1921 pinfo->symtab_pos = -1;
1922 }
1923
1924 if (! prefix_addresses)
1925 {
1926 pinfo->fprintf_func (pinfo->stream, "\n");
1927 objdump_print_addr_with_sym (abfd, section, sym, addr,
1928 pinfo, FALSE);
1929 pinfo->fprintf_func (pinfo->stream, ":\n");
1930 }
1931
1932 if (sym != NULL && bfd_asymbol_value (sym) > addr)
1933 nextsym = sym;
1934 else if (sym == NULL)
1935 nextsym = NULL;
1936 else
1937 {
1938 #define is_valid_next_sym(SYM) \
1939 ((SYM)->section == section \
1940 && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
1941 && pinfo->symbol_is_valid (SYM, pinfo))
1942
1943 /* Search forward for the next appropriate symbol in
1944 SECTION. Note that all the symbols are sorted
1945 together into one big array, and that some sections
1946 may have overlapping addresses. */
1947 while (place < sorted_symcount
1948 && ! is_valid_next_sym (sorted_syms [place]))
1949 ++place;
1950
1951 if (place >= sorted_symcount)
1952 nextsym = NULL;
1953 else
1954 nextsym = sorted_syms[place];
1955 }
1956
1957 if (sym != NULL && bfd_asymbol_value (sym) > addr)
1958 nextstop_offset = bfd_asymbol_value (sym) - section->vma;
1959 else if (nextsym == NULL)
1960 nextstop_offset = stop_offset;
1961 else
1962 nextstop_offset = bfd_asymbol_value (nextsym) - section->vma;
1963
1964 if (nextstop_offset > stop_offset
1965 || nextstop_offset <= addr_offset)
1966 nextstop_offset = stop_offset;
1967
1968 /* If a symbol is explicitly marked as being an object
1969 rather than a function, just dump the bytes without
1970 disassembling them. */
1971 if (disassemble_all
1972 || sym == NULL
1973 || sym->section != section
1974 || bfd_asymbol_value (sym) > addr
1975 || ((sym->flags & BSF_OBJECT) == 0
1976 && (strstr (bfd_asymbol_name (sym), "gnu_compiled")
1977 == NULL)
1978 && (strstr (bfd_asymbol_name (sym), "gcc2_compiled")
1979 == NULL))
1980 || (sym->flags & BSF_FUNCTION) != 0)
1981 insns = TRUE;
1982 else
1983 insns = FALSE;
1984
1985 disassemble_bytes (pinfo, paux->disassemble_fn, insns, data,
1986 addr_offset, nextstop_offset,
1987 rel_offset, &rel_pp, rel_ppend);
1988
1989 addr_offset = nextstop_offset;
1990 sym = nextsym;
1991 }
1992
1993 free (data);
1994
1995 if (rel_ppstart != NULL)
1996 free (rel_ppstart);
1997 }
1998
1999 /* Disassemble the contents of an object file. */
2000
2001 static void
2002 disassemble_data (bfd *abfd)
2003 {
2004 struct disassemble_info disasm_info;
2005 struct objdump_disasm_info aux;
2006 long i;
2007
2008 print_files = NULL;
2009 prev_functionname = NULL;
2010 prev_line = -1;
2011
2012 /* We make a copy of syms to sort. We don't want to sort syms
2013 because that will screw up the relocs. */
2014 sorted_symcount = symcount ? symcount : dynsymcount;
2015 sorted_syms = xmalloc ((sorted_symcount + synthcount) * sizeof (asymbol *));
2016 memcpy (sorted_syms, symcount ? syms : dynsyms,
2017 sorted_symcount * sizeof (asymbol *));
2018
2019 sorted_symcount = remove_useless_symbols (sorted_syms, sorted_symcount);
2020
2021 for (i = 0; i < synthcount; ++i)
2022 {
2023 sorted_syms[sorted_symcount] = synthsyms + i;
2024 ++sorted_symcount;
2025 }
2026
2027 /* Sort the symbols into section and symbol order. */
2028 qsort (sorted_syms, sorted_symcount, sizeof (asymbol *), compare_symbols);
2029
2030 init_disassemble_info (&disasm_info, stdout, (fprintf_ftype) fprintf);
2031
2032 disasm_info.application_data = (void *) &aux;
2033 aux.abfd = abfd;
2034 aux.require_sec = FALSE;
2035 aux.dynrelbuf = NULL;
2036 aux.dynrelcount = 0;
2037 aux.reloc = NULL;
2038
2039 disasm_info.print_address_func = objdump_print_address;
2040 disasm_info.symbol_at_address_func = objdump_symbol_at_address;
2041
2042 if (machine != NULL)
2043 {
2044 const bfd_arch_info_type *info = bfd_scan_arch (machine);
2045
2046 if (info == NULL)
2047 fatal (_("Can't use supplied machine %s"), machine);
2048
2049 abfd->arch_info = info;
2050 }
2051
2052 if (endian != BFD_ENDIAN_UNKNOWN)
2053 {
2054 struct bfd_target *xvec;
2055
2056 xvec = xmalloc (sizeof (struct bfd_target));
2057 memcpy (xvec, abfd->xvec, sizeof (struct bfd_target));
2058 xvec->byteorder = endian;
2059 abfd->xvec = xvec;
2060 }
2061
2062 /* Use libopcodes to locate a suitable disassembler. */
2063 aux.disassemble_fn = disassembler (abfd);
2064 if (!aux.disassemble_fn)
2065 {
2066 non_fatal (_("Can't disassemble for architecture %s\n"),
2067 bfd_printable_arch_mach (bfd_get_arch (abfd), 0));
2068 exit_status = 1;
2069 return;
2070 }
2071
2072 disasm_info.flavour = bfd_get_flavour (abfd);
2073 disasm_info.arch = bfd_get_arch (abfd);
2074 disasm_info.mach = bfd_get_mach (abfd);
2075 disasm_info.disassembler_options = disassembler_options;
2076 disasm_info.octets_per_byte = bfd_octets_per_byte (abfd);
2077 disasm_info.skip_zeroes = DEFAULT_SKIP_ZEROES;
2078 disasm_info.skip_zeroes_at_end = DEFAULT_SKIP_ZEROES_AT_END;
2079 disasm_info.disassembler_needs_relocs = FALSE;
2080
2081 if (bfd_big_endian (abfd))
2082 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_BIG;
2083 else if (bfd_little_endian (abfd))
2084 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_LITTLE;
2085 else
2086 /* ??? Aborting here seems too drastic. We could default to big or little
2087 instead. */
2088 disasm_info.endian = BFD_ENDIAN_UNKNOWN;
2089
2090 /* Allow the target to customize the info structure. */
2091 disassemble_init_for_target (& disasm_info);
2092
2093 /* Pre-load the dynamic relocs if we are going
2094 to be dumping them along with the disassembly. */
2095 if (dump_dynamic_reloc_info)
2096 {
2097 long relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2098
2099 if (relsize < 0)
2100 bfd_fatal (bfd_get_filename (abfd));
2101
2102 if (relsize > 0)
2103 {
2104 aux.dynrelbuf = xmalloc (relsize);
2105 aux.dynrelcount = bfd_canonicalize_dynamic_reloc (abfd,
2106 aux.dynrelbuf,
2107 dynsyms);
2108 if (aux.dynrelcount < 0)
2109 bfd_fatal (bfd_get_filename (abfd));
2110
2111 /* Sort the relocs by address. */
2112 qsort (aux.dynrelbuf, aux.dynrelcount, sizeof (arelent *),
2113 compare_relocs);
2114 }
2115 }
2116 disasm_info.symtab = sorted_syms;
2117 disasm_info.symtab_size = sorted_symcount;
2118
2119 bfd_map_over_sections (abfd, disassemble_section, & disasm_info);
2120
2121 if (aux.dynrelbuf != NULL)
2122 free (aux.dynrelbuf);
2123 free (sorted_syms);
2124 }
2125 \f
2126 static int
2127 load_specific_debug_section (enum dwarf_section_display_enum debug,
2128 asection *sec, void *file)
2129 {
2130 struct dwarf_section *section = &debug_displays [debug].section;
2131 bfd *abfd = file;
2132 bfd_boolean ret;
2133 int section_is_compressed;
2134
2135 /* If it is already loaded, do nothing. */
2136 if (section->start != NULL)
2137 return 1;
2138
2139 section_is_compressed = section->name == section->compressed_name;
2140
2141 section->address = 0;
2142 section->size = bfd_get_section_size (sec);
2143 section->start = xmalloc (section->size);
2144
2145 if (is_relocatable && debug_displays [debug].relocate)
2146 ret = bfd_simple_get_relocated_section_contents (abfd,
2147 sec,
2148 section->start,
2149 syms) != NULL;
2150 else
2151 ret = bfd_get_section_contents (abfd, sec, section->start, 0,
2152 section->size);
2153
2154 if (! ret)
2155 {
2156 free_debug_section (debug);
2157 printf (_("\nCan't get contents for section '%s'.\n"),
2158 section->name);
2159 return 0;
2160 }
2161
2162 if (section_is_compressed)
2163 {
2164 bfd_size_type size = section->size;
2165 if (! bfd_uncompress_section_contents (&section->start, &size))
2166 {
2167 free_debug_section (debug);
2168 printf (_("\nCan't uncompress section '%s'.\n"), section->name);
2169 return 0;
2170 }
2171 section->size = size;
2172 }
2173
2174 return 1;
2175 }
2176
2177 int
2178 load_debug_section (enum dwarf_section_display_enum debug, void *file)
2179 {
2180 struct dwarf_section *section = &debug_displays [debug].section;
2181 bfd *abfd = file;
2182 asection *sec;
2183
2184 /* If it is already loaded, do nothing. */
2185 if (section->start != NULL)
2186 return 1;
2187
2188 /* Locate the debug section. */
2189 sec = bfd_get_section_by_name (abfd, section->uncompressed_name);
2190 if (sec != NULL)
2191 section->name = section->uncompressed_name;
2192 else
2193 {
2194 sec = bfd_get_section_by_name (abfd, section->compressed_name);
2195 if (sec != NULL)
2196 section->name = section->compressed_name;
2197 }
2198 if (sec == NULL)
2199 return 0;
2200
2201 return load_specific_debug_section (debug, sec, file);
2202 }
2203
2204 void
2205 free_debug_section (enum dwarf_section_display_enum debug)
2206 {
2207 struct dwarf_section *section = &debug_displays [debug].section;
2208
2209 if (section->start == NULL)
2210 return;
2211
2212 free ((char *) section->start);
2213 section->start = NULL;
2214 section->address = 0;
2215 section->size = 0;
2216 }
2217
2218 static void
2219 dump_dwarf_section (bfd *abfd, asection *section,
2220 void *arg ATTRIBUTE_UNUSED)
2221 {
2222 const char *name = bfd_get_section_name (abfd, section);
2223 const char *match;
2224 enum dwarf_section_display_enum i;
2225
2226 if (CONST_STRNEQ (name, ".gnu.linkonce.wi."))
2227 match = ".debug_info";
2228 else
2229 match = name;
2230
2231 for (i = 0; i < max; i++)
2232 if ((strcmp (debug_displays [i].section.uncompressed_name, match) == 0
2233 || strcmp (debug_displays [i].section.compressed_name, match) == 0)
2234 && debug_displays [i].enabled != NULL
2235 && *debug_displays [i].enabled)
2236 {
2237 if (!debug_displays [i].eh_frame)
2238 {
2239 struct dwarf_section *sec = &debug_displays [i].section;
2240
2241 if (strcmp (sec->uncompressed_name, match) == 0)
2242 sec->name = sec->uncompressed_name;
2243 else
2244 sec->name = sec->compressed_name;
2245 if (load_specific_debug_section (i, section, abfd))
2246 {
2247 debug_displays [i].display (sec, abfd);
2248
2249 if (i != info && i != abbrev)
2250 free_debug_section (i);
2251 }
2252 }
2253 break;
2254 }
2255 }
2256
2257 /* Dump the dwarf debugging information. */
2258
2259 static void
2260 dump_dwarf (bfd *abfd)
2261 {
2262 is_relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2263
2264 /* FIXME: bfd_get_arch_size may return -1. We assume that 64bit
2265 targets will return 64. */
2266 eh_addr_size = bfd_get_arch_size (abfd) == 64 ? 8 : 4;
2267
2268 if (bfd_big_endian (abfd))
2269 byte_get = byte_get_big_endian;
2270 else if (bfd_little_endian (abfd))
2271 byte_get = byte_get_little_endian;
2272 else
2273 abort ();
2274
2275 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
2276 {
2277 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2278 init_dwarf_regnames (bed->elf_machine_code);
2279 }
2280
2281 bfd_map_over_sections (abfd, dump_dwarf_section, NULL);
2282
2283 free_debug_memory ();
2284 }
2285 \f
2286 /* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
2287 it. Return NULL on failure. */
2288
2289 static char *
2290 read_section_stabs (bfd *abfd, const char *sect_name, bfd_size_type *size_ptr)
2291 {
2292 asection *stabsect;
2293 bfd_size_type size;
2294 char *contents;
2295
2296 stabsect = bfd_get_section_by_name (abfd, sect_name);
2297 if (stabsect == NULL)
2298 {
2299 printf (_("No %s section present\n\n"), sect_name);
2300 return FALSE;
2301 }
2302
2303 size = bfd_section_size (abfd, stabsect);
2304 contents = xmalloc (size);
2305
2306 if (! bfd_get_section_contents (abfd, stabsect, contents, 0, size))
2307 {
2308 non_fatal (_("Reading %s section of %s failed: %s"),
2309 sect_name, bfd_get_filename (abfd),
2310 bfd_errmsg (bfd_get_error ()));
2311 free (contents);
2312 exit_status = 1;
2313 return NULL;
2314 }
2315
2316 *size_ptr = size;
2317
2318 return contents;
2319 }
2320
2321 /* Stabs entries use a 12 byte format:
2322 4 byte string table index
2323 1 byte stab type
2324 1 byte stab other field
2325 2 byte stab desc field
2326 4 byte stab value
2327 FIXME: This will have to change for a 64 bit object format. */
2328
2329 #define STRDXOFF (0)
2330 #define TYPEOFF (4)
2331 #define OTHEROFF (5)
2332 #define DESCOFF (6)
2333 #define VALOFF (8)
2334 #define STABSIZE (12)
2335
2336 /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
2337 using string table section STRSECT_NAME (in `strtab'). */
2338
2339 static void
2340 print_section_stabs (bfd *abfd,
2341 const char *stabsect_name,
2342 unsigned *string_offset_ptr)
2343 {
2344 int i;
2345 unsigned file_string_table_offset = 0;
2346 unsigned next_file_string_table_offset = *string_offset_ptr;
2347 bfd_byte *stabp, *stabs_end;
2348
2349 stabp = stabs;
2350 stabs_end = stabp + stab_size;
2351
2352 printf (_("Contents of %s section:\n\n"), stabsect_name);
2353 printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
2354
2355 /* Loop through all symbols and print them.
2356
2357 We start the index at -1 because there is a dummy symbol on
2358 the front of stabs-in-{coff,elf} sections that supplies sizes. */
2359 for (i = -1; stabp < stabs_end; stabp += STABSIZE, i++)
2360 {
2361 const char *name;
2362 unsigned long strx;
2363 unsigned char type, other;
2364 unsigned short desc;
2365 bfd_vma value;
2366
2367 strx = bfd_h_get_32 (abfd, stabp + STRDXOFF);
2368 type = bfd_h_get_8 (abfd, stabp + TYPEOFF);
2369 other = bfd_h_get_8 (abfd, stabp + OTHEROFF);
2370 desc = bfd_h_get_16 (abfd, stabp + DESCOFF);
2371 value = bfd_h_get_32 (abfd, stabp + VALOFF);
2372
2373 printf ("\n%-6d ", i);
2374 /* Either print the stab name, or, if unnamed, print its number
2375 again (makes consistent formatting for tools like awk). */
2376 name = bfd_get_stab_name (type);
2377 if (name != NULL)
2378 printf ("%-6s", name);
2379 else if (type == N_UNDF)
2380 printf ("HdrSym");
2381 else
2382 printf ("%-6d", type);
2383 printf (" %-6d %-6d ", other, desc);
2384 bfd_printf_vma (abfd, value);
2385 printf (" %-6lu", strx);
2386
2387 /* Symbols with type == 0 (N_UNDF) specify the length of the
2388 string table associated with this file. We use that info
2389 to know how to relocate the *next* file's string table indices. */
2390 if (type == N_UNDF)
2391 {
2392 file_string_table_offset = next_file_string_table_offset;
2393 next_file_string_table_offset += value;
2394 }
2395 else
2396 {
2397 /* Using the (possibly updated) string table offset, print the
2398 string (if any) associated with this symbol. */
2399 if ((strx + file_string_table_offset) < stabstr_size)
2400 printf (" %s", &strtab[strx + file_string_table_offset]);
2401 else
2402 printf (" *");
2403 }
2404 }
2405 printf ("\n\n");
2406 *string_offset_ptr = next_file_string_table_offset;
2407 }
2408
2409 typedef struct
2410 {
2411 const char * section_name;
2412 const char * string_section_name;
2413 unsigned string_offset;
2414 }
2415 stab_section_names;
2416
2417 static void
2418 find_stabs_section (bfd *abfd, asection *section, void *names)
2419 {
2420 int len;
2421 stab_section_names * sought = (stab_section_names *) names;
2422
2423 /* Check for section names for which stabsect_name is a prefix, to
2424 handle .stab.N, etc. */
2425 len = strlen (sought->section_name);
2426
2427 /* If the prefix matches, and the files section name ends with a
2428 nul or a digit, then we match. I.e., we want either an exact
2429 match or a section followed by a number. */
2430 if (strncmp (sought->section_name, section->name, len) == 0
2431 && (section->name[len] == 0
2432 || (section->name[len] == '.' && ISDIGIT (section->name[len + 1]))))
2433 {
2434 if (strtab == NULL)
2435 strtab = read_section_stabs (abfd, sought->string_section_name,
2436 &stabstr_size);
2437
2438 if (strtab)
2439 {
2440 stabs = (bfd_byte *) read_section_stabs (abfd, section->name,
2441 &stab_size);
2442 if (stabs)
2443 print_section_stabs (abfd, section->name, &sought->string_offset);
2444 }
2445 }
2446 }
2447
2448 static void
2449 dump_stabs_section (bfd *abfd, char *stabsect_name, char *strsect_name)
2450 {
2451 stab_section_names s;
2452
2453 s.section_name = stabsect_name;
2454 s.string_section_name = strsect_name;
2455 s.string_offset = 0;
2456
2457 bfd_map_over_sections (abfd, find_stabs_section, & s);
2458
2459 free (strtab);
2460 strtab = NULL;
2461 }
2462
2463 /* Dump the any sections containing stabs debugging information. */
2464
2465 static void
2466 dump_stabs (bfd *abfd)
2467 {
2468 dump_stabs_section (abfd, ".stab", ".stabstr");
2469 dump_stabs_section (abfd, ".stab.excl", ".stab.exclstr");
2470 dump_stabs_section (abfd, ".stab.index", ".stab.indexstr");
2471
2472 /* For Darwin. */
2473 dump_stabs_section (abfd, "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr");
2474
2475 dump_stabs_section (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
2476 }
2477 \f
2478 static void
2479 dump_bfd_header (bfd *abfd)
2480 {
2481 char *comma = "";
2482
2483 printf (_("architecture: %s, "),
2484 bfd_printable_arch_mach (bfd_get_arch (abfd),
2485 bfd_get_mach (abfd)));
2486 printf (_("flags 0x%08x:\n"), abfd->flags);
2487
2488 #define PF(x, y) if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
2489 PF (HAS_RELOC, "HAS_RELOC");
2490 PF (EXEC_P, "EXEC_P");
2491 PF (HAS_LINENO, "HAS_LINENO");
2492 PF (HAS_DEBUG, "HAS_DEBUG");
2493 PF (HAS_SYMS, "HAS_SYMS");
2494 PF (HAS_LOCALS, "HAS_LOCALS");
2495 PF (DYNAMIC, "DYNAMIC");
2496 PF (WP_TEXT, "WP_TEXT");
2497 PF (D_PAGED, "D_PAGED");
2498 PF (BFD_IS_RELAXABLE, "BFD_IS_RELAXABLE");
2499 PF (HAS_LOAD_PAGE, "HAS_LOAD_PAGE");
2500 printf (_("\nstart address 0x"));
2501 bfd_printf_vma (abfd, abfd->start_address);
2502 printf ("\n");
2503 }
2504
2505 \f
2506 static void
2507 dump_bfd_private_header (bfd *abfd)
2508 {
2509 bfd_print_private_bfd_data (abfd, stdout);
2510 }
2511
2512 \f
2513 /* Display a section in hexadecimal format with associated characters.
2514 Each line prefixed by the zero padded address. */
2515
2516 static void
2517 dump_section (bfd *abfd, asection *section, void *dummy ATTRIBUTE_UNUSED)
2518 {
2519 bfd_byte *data = 0;
2520 bfd_size_type datasize;
2521 bfd_size_type addr_offset;
2522 bfd_size_type start_offset;
2523 bfd_size_type stop_offset;
2524 unsigned int opb = bfd_octets_per_byte (abfd);
2525 /* Bytes per line. */
2526 const int onaline = 16;
2527 char buf[64];
2528 int count;
2529 int width;
2530
2531 if ((section->flags & SEC_HAS_CONTENTS) == 0)
2532 return;
2533
2534 if (! process_section_p (section))
2535 return;
2536
2537 if ((datasize = bfd_section_size (abfd, section)) == 0)
2538 return;
2539
2540 /* Compute the address range to display. */
2541 if (start_address == (bfd_vma) -1
2542 || start_address < section->vma)
2543 start_offset = 0;
2544 else
2545 start_offset = start_address - section->vma;
2546
2547 if (stop_address == (bfd_vma) -1)
2548 stop_offset = datasize / opb;
2549 else
2550 {
2551 if (stop_address < section->vma)
2552 stop_offset = 0;
2553 else
2554 stop_offset = stop_address - section->vma;
2555
2556 if (stop_offset > datasize / opb)
2557 stop_offset = datasize / opb;
2558 }
2559
2560 if (start_offset >= stop_offset)
2561 return;
2562
2563 printf (_("Contents of section %s:"), section->name);
2564 if (display_file_offsets)
2565 printf (_(" (Starting at file offset: 0x%lx)"),
2566 (unsigned long) (section->filepos + start_offset));
2567 printf ("\n");
2568
2569 data = xmalloc (datasize);
2570
2571 bfd_get_section_contents (abfd, section, data, 0, datasize);
2572
2573 width = 4;
2574
2575 bfd_sprintf_vma (abfd, buf, start_offset + section->vma);
2576 if (strlen (buf) >= sizeof (buf))
2577 abort ();
2578
2579 count = 0;
2580 while (buf[count] == '0' && buf[count+1] != '\0')
2581 count++;
2582 count = strlen (buf) - count;
2583 if (count > width)
2584 width = count;
2585
2586 bfd_sprintf_vma (abfd, buf, stop_offset + section->vma - 1);
2587 if (strlen (buf) >= sizeof (buf))
2588 abort ();
2589
2590 count = 0;
2591 while (buf[count] == '0' && buf[count+1] != '\0')
2592 count++;
2593 count = strlen (buf) - count;
2594 if (count > width)
2595 width = count;
2596
2597 for (addr_offset = start_offset;
2598 addr_offset < stop_offset; addr_offset += onaline / opb)
2599 {
2600 bfd_size_type j;
2601
2602 bfd_sprintf_vma (abfd, buf, (addr_offset + section->vma));
2603 count = strlen (buf);
2604 if ((size_t) count >= sizeof (buf))
2605 abort ();
2606
2607 putchar (' ');
2608 while (count < width)
2609 {
2610 putchar ('0');
2611 count++;
2612 }
2613 fputs (buf + count - width, stdout);
2614 putchar (' ');
2615
2616 for (j = addr_offset * opb;
2617 j < addr_offset * opb + onaline; j++)
2618 {
2619 if (j < stop_offset * opb)
2620 printf ("%02x", (unsigned) (data[j]));
2621 else
2622 printf (" ");
2623 if ((j & 3) == 3)
2624 printf (" ");
2625 }
2626
2627 printf (" ");
2628 for (j = addr_offset * opb;
2629 j < addr_offset * opb + onaline; j++)
2630 {
2631 if (j >= stop_offset * opb)
2632 printf (" ");
2633 else
2634 printf ("%c", ISPRINT (data[j]) ? data[j] : '.');
2635 }
2636 putchar ('\n');
2637 }
2638 free (data);
2639 }
2640
2641 /* Actually display the various requested regions. */
2642
2643 static void
2644 dump_data (bfd *abfd)
2645 {
2646 bfd_map_over_sections (abfd, dump_section, NULL);
2647 }
2648
2649 /* Should perhaps share code and display with nm? */
2650
2651 static void
2652 dump_symbols (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean dynamic)
2653 {
2654 asymbol **current;
2655 long max;
2656 long count;
2657
2658 if (dynamic)
2659 {
2660 current = dynsyms;
2661 max = dynsymcount;
2662 printf ("DYNAMIC SYMBOL TABLE:\n");
2663 }
2664 else
2665 {
2666 current = syms;
2667 max = symcount;
2668 printf ("SYMBOL TABLE:\n");
2669 }
2670
2671 if (max == 0)
2672 printf (_("no symbols\n"));
2673
2674 for (count = 0; count < max; count++)
2675 {
2676 bfd *cur_bfd;
2677
2678 if (*current == NULL)
2679 printf (_("no information for symbol number %ld\n"), count);
2680
2681 else if ((cur_bfd = bfd_asymbol_bfd (*current)) == NULL)
2682 printf (_("could not determine the type of symbol number %ld\n"),
2683 count);
2684
2685 else if (process_section_p ((* current)->section)
2686 && (dump_special_syms
2687 || !bfd_is_target_special_symbol (cur_bfd, *current)))
2688 {
2689 const char *name = (*current)->name;
2690
2691 if (do_demangle && name != NULL && *name != '\0')
2692 {
2693 char *alloc;
2694
2695 /* If we want to demangle the name, we demangle it
2696 here, and temporarily clobber it while calling
2697 bfd_print_symbol. FIXME: This is a gross hack. */
2698 alloc = bfd_demangle (cur_bfd, name, DMGL_ANSI | DMGL_PARAMS);
2699 if (alloc != NULL)
2700 (*current)->name = alloc;
2701 bfd_print_symbol (cur_bfd, stdout, *current,
2702 bfd_print_symbol_all);
2703 if (alloc != NULL)
2704 {
2705 (*current)->name = name;
2706 free (alloc);
2707 }
2708 }
2709 else
2710 bfd_print_symbol (cur_bfd, stdout, *current,
2711 bfd_print_symbol_all);
2712 printf ("\n");
2713 }
2714
2715 current++;
2716 }
2717 printf ("\n\n");
2718 }
2719 \f
2720 static void
2721 dump_reloc_set (bfd *abfd, asection *sec, arelent **relpp, long relcount)
2722 {
2723 arelent **p;
2724 char *last_filename, *last_functionname;
2725 unsigned int last_line;
2726
2727 /* Get column headers lined up reasonably. */
2728 {
2729 static int width;
2730
2731 if (width == 0)
2732 {
2733 char buf[30];
2734
2735 bfd_sprintf_vma (abfd, buf, (bfd_vma) -1);
2736 width = strlen (buf) - 7;
2737 }
2738 printf ("OFFSET %*s TYPE %*s VALUE \n", width, "", 12, "");
2739 }
2740
2741 last_filename = NULL;
2742 last_functionname = NULL;
2743 last_line = 0;
2744
2745 for (p = relpp; relcount && *p != NULL; p++, relcount--)
2746 {
2747 arelent *q = *p;
2748 const char *filename, *functionname;
2749 unsigned int line;
2750 const char *sym_name;
2751 const char *section_name;
2752
2753 if (start_address != (bfd_vma) -1
2754 && q->address < start_address)
2755 continue;
2756 if (stop_address != (bfd_vma) -1
2757 && q->address > stop_address)
2758 continue;
2759
2760 if (with_line_numbers
2761 && sec != NULL
2762 && bfd_find_nearest_line (abfd, sec, syms, q->address,
2763 &filename, &functionname, &line))
2764 {
2765 if (functionname != NULL
2766 && (last_functionname == NULL
2767 || strcmp (functionname, last_functionname) != 0))
2768 {
2769 printf ("%s():\n", functionname);
2770 if (last_functionname != NULL)
2771 free (last_functionname);
2772 last_functionname = xstrdup (functionname);
2773 }
2774
2775 if (line > 0
2776 && (line != last_line
2777 || (filename != NULL
2778 && last_filename != NULL
2779 && strcmp (filename, last_filename) != 0)))
2780 {
2781 printf ("%s:%u\n", filename == NULL ? "???" : filename, line);
2782 last_line = line;
2783 if (last_filename != NULL)
2784 free (last_filename);
2785 if (filename == NULL)
2786 last_filename = NULL;
2787 else
2788 last_filename = xstrdup (filename);
2789 }
2790 }
2791
2792 if (q->sym_ptr_ptr && *q->sym_ptr_ptr)
2793 {
2794 sym_name = (*(q->sym_ptr_ptr))->name;
2795 section_name = (*(q->sym_ptr_ptr))->section->name;
2796 }
2797 else
2798 {
2799 sym_name = NULL;
2800 section_name = NULL;
2801 }
2802
2803 bfd_printf_vma (abfd, q->address);
2804 if (q->howto == NULL)
2805 printf (" *unknown* ");
2806 else if (q->howto->name)
2807 printf (" %-16s ", q->howto->name);
2808 else
2809 printf (" %-16d ", q->howto->type);
2810
2811 if (sym_name)
2812 {
2813 objdump_print_symname (abfd, NULL, *q->sym_ptr_ptr);
2814 }
2815 else
2816 {
2817 if (section_name == NULL)
2818 section_name = "*unknown*";
2819 printf ("[%s]", section_name);
2820 }
2821
2822 if (q->addend)
2823 {
2824 printf ("+0x");
2825 bfd_printf_vma (abfd, q->addend);
2826 }
2827
2828 printf ("\n");
2829 }
2830 }
2831
2832 static void
2833 dump_relocs_in_section (bfd *abfd,
2834 asection *section,
2835 void *dummy ATTRIBUTE_UNUSED)
2836 {
2837 arelent **relpp;
2838 long relcount;
2839 long relsize;
2840
2841 if ( bfd_is_abs_section (section)
2842 || bfd_is_und_section (section)
2843 || bfd_is_com_section (section)
2844 || (! process_section_p (section))
2845 || ((section->flags & SEC_RELOC) == 0))
2846 return;
2847
2848 relsize = bfd_get_reloc_upper_bound (abfd, section);
2849 if (relsize < 0)
2850 bfd_fatal (bfd_get_filename (abfd));
2851
2852 printf ("RELOCATION RECORDS FOR [%s]:", section->name);
2853
2854 if (relsize == 0)
2855 {
2856 printf (" (none)\n\n");
2857 return;
2858 }
2859
2860 relpp = xmalloc (relsize);
2861 relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
2862
2863 if (relcount < 0)
2864 bfd_fatal (bfd_get_filename (abfd));
2865 else if (relcount == 0)
2866 printf (" (none)\n\n");
2867 else
2868 {
2869 printf ("\n");
2870 dump_reloc_set (abfd, section, relpp, relcount);
2871 printf ("\n\n");
2872 }
2873 free (relpp);
2874 }
2875
2876 static void
2877 dump_relocs (bfd *abfd)
2878 {
2879 bfd_map_over_sections (abfd, dump_relocs_in_section, NULL);
2880 }
2881
2882 static void
2883 dump_dynamic_relocs (bfd *abfd)
2884 {
2885 long relsize;
2886 arelent **relpp;
2887 long relcount;
2888
2889 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2890 if (relsize < 0)
2891 bfd_fatal (bfd_get_filename (abfd));
2892
2893 printf ("DYNAMIC RELOCATION RECORDS");
2894
2895 if (relsize == 0)
2896 printf (" (none)\n\n");
2897 else
2898 {
2899 relpp = xmalloc (relsize);
2900 relcount = bfd_canonicalize_dynamic_reloc (abfd, relpp, dynsyms);
2901
2902 if (relcount < 0)
2903 bfd_fatal (bfd_get_filename (abfd));
2904 else if (relcount == 0)
2905 printf (" (none)\n\n");
2906 else
2907 {
2908 printf ("\n");
2909 dump_reloc_set (abfd, NULL, relpp, relcount);
2910 printf ("\n\n");
2911 }
2912 free (relpp);
2913 }
2914 }
2915
2916 /* Creates a table of paths, to search for source files. */
2917
2918 static void
2919 add_include_path (const char *path)
2920 {
2921 if (path[0] == 0)
2922 return;
2923 include_path_count++;
2924 include_paths = xrealloc (include_paths,
2925 include_path_count * sizeof (*include_paths));
2926 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2927 if (path[1] == ':' && path[2] == 0)
2928 path = concat (path, ".", (const char *) 0);
2929 #endif
2930 include_paths[include_path_count - 1] = path;
2931 }
2932
2933 static void
2934 adjust_addresses (bfd *abfd ATTRIBUTE_UNUSED,
2935 asection *section,
2936 void *arg)
2937 {
2938 if ((section->flags & SEC_DEBUGGING) == 0)
2939 {
2940 bfd_boolean *has_reloc_p = (bfd_boolean *) arg;
2941 section->vma += adjust_section_vma;
2942 if (*has_reloc_p)
2943 section->lma += adjust_section_vma;
2944 }
2945 }
2946
2947 /* Dump selected contents of ABFD. */
2948
2949 static void
2950 dump_bfd (bfd *abfd)
2951 {
2952 /* If we are adjusting section VMA's, change them all now. Changing
2953 the BFD information is a hack. However, we must do it, or
2954 bfd_find_nearest_line will not do the right thing. */
2955 if (adjust_section_vma != 0)
2956 {
2957 bfd_boolean has_reloc = (abfd->flags & HAS_RELOC);
2958 bfd_map_over_sections (abfd, adjust_addresses, &has_reloc);
2959 }
2960
2961 if (! dump_debugging_tags)
2962 printf (_("\n%s: file format %s\n"), bfd_get_filename (abfd),
2963 abfd->xvec->name);
2964 if (dump_ar_hdrs)
2965 print_arelt_descr (stdout, abfd, TRUE);
2966 if (dump_file_header)
2967 dump_bfd_header (abfd);
2968 if (dump_private_headers)
2969 dump_bfd_private_header (abfd);
2970 if (! dump_debugging_tags)
2971 putchar ('\n');
2972 if (dump_section_headers)
2973 dump_headers (abfd);
2974
2975 if (dump_symtab
2976 || dump_reloc_info
2977 || disassemble
2978 || dump_debugging
2979 || dump_dwarf_section_info)
2980 syms = slurp_symtab (abfd);
2981 if (dump_dynamic_symtab || dump_dynamic_reloc_info
2982 || (disassemble && bfd_get_dynamic_symtab_upper_bound (abfd) > 0))
2983 dynsyms = slurp_dynamic_symtab (abfd);
2984 if (disassemble)
2985 {
2986 synthcount = bfd_get_synthetic_symtab (abfd, symcount, syms,
2987 dynsymcount, dynsyms, &synthsyms);
2988 if (synthcount < 0)
2989 synthcount = 0;
2990 }
2991
2992 if (dump_symtab)
2993 dump_symbols (abfd, FALSE);
2994 if (dump_dynamic_symtab)
2995 dump_symbols (abfd, TRUE);
2996 if (dump_dwarf_section_info)
2997 dump_dwarf (abfd);
2998 if (dump_stab_section_info)
2999 dump_stabs (abfd);
3000 if (dump_reloc_info && ! disassemble)
3001 dump_relocs (abfd);
3002 if (dump_dynamic_reloc_info && ! disassemble)
3003 dump_dynamic_relocs (abfd);
3004 if (dump_section_contents)
3005 dump_data (abfd);
3006 if (disassemble)
3007 disassemble_data (abfd);
3008
3009 if (dump_debugging)
3010 {
3011 void *dhandle;
3012
3013 dhandle = read_debugging_info (abfd, syms, symcount, TRUE);
3014 if (dhandle != NULL)
3015 {
3016 if (!print_debugging_info (stdout, dhandle, abfd, syms,
3017 bfd_demangle,
3018 dump_debugging_tags ? TRUE : FALSE))
3019 {
3020 non_fatal (_("%s: printing debugging information failed"),
3021 bfd_get_filename (abfd));
3022 exit_status = 1;
3023 }
3024 }
3025 /* PR 6483: If there was no STABS or IEEE debug
3026 info in the file, try DWARF instead. */
3027 else if (! dump_dwarf_section_info)
3028 {
3029 dump_dwarf (abfd);
3030 }
3031 }
3032
3033 if (syms)
3034 {
3035 free (syms);
3036 syms = NULL;
3037 }
3038
3039 if (dynsyms)
3040 {
3041 free (dynsyms);
3042 dynsyms = NULL;
3043 }
3044
3045 if (synthsyms)
3046 {
3047 free (synthsyms);
3048 synthsyms = NULL;
3049 }
3050
3051 symcount = 0;
3052 dynsymcount = 0;
3053 synthcount = 0;
3054 }
3055
3056 static void
3057 display_bfd (bfd *abfd)
3058 {
3059 char **matching;
3060
3061 if (bfd_check_format_matches (abfd, bfd_object, &matching))
3062 {
3063 dump_bfd (abfd);
3064 return;
3065 }
3066
3067 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3068 {
3069 nonfatal (bfd_get_filename (abfd));
3070 list_matching_formats (matching);
3071 free (matching);
3072 return;
3073 }
3074
3075 if (bfd_get_error () != bfd_error_file_not_recognized)
3076 {
3077 nonfatal (bfd_get_filename (abfd));
3078 return;
3079 }
3080
3081 if (bfd_check_format_matches (abfd, bfd_core, &matching))
3082 {
3083 dump_bfd (abfd);
3084 return;
3085 }
3086
3087 nonfatal (bfd_get_filename (abfd));
3088
3089 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3090 {
3091 list_matching_formats (matching);
3092 free (matching);
3093 }
3094 }
3095
3096 static void
3097 display_file (char *filename, char *target)
3098 {
3099 bfd *file;
3100 bfd *arfile = NULL;
3101
3102 if (get_file_size (filename) < 1)
3103 {
3104 exit_status = 1;
3105 return;
3106 }
3107
3108 file = bfd_openr (filename, target);
3109 if (file == NULL)
3110 {
3111 nonfatal (filename);
3112 return;
3113 }
3114
3115 /* If the file is an archive, process all of its elements. */
3116 if (bfd_check_format (file, bfd_archive))
3117 {
3118 bfd *last_arfile = NULL;
3119
3120 printf (_("In archive %s:\n"), bfd_get_filename (file));
3121 for (;;)
3122 {
3123 bfd_set_error (bfd_error_no_error);
3124
3125 arfile = bfd_openr_next_archived_file (file, arfile);
3126 if (arfile == NULL)
3127 {
3128 if (bfd_get_error () != bfd_error_no_more_archived_files)
3129 nonfatal (bfd_get_filename (file));
3130 break;
3131 }
3132
3133 display_bfd (arfile);
3134
3135 if (last_arfile != NULL)
3136 bfd_close (last_arfile);
3137 last_arfile = arfile;
3138 }
3139
3140 if (last_arfile != NULL)
3141 bfd_close (last_arfile);
3142 }
3143 else
3144 display_bfd (file);
3145
3146 bfd_close (file);
3147 }
3148 \f
3149 int
3150 main (int argc, char **argv)
3151 {
3152 int c;
3153 char *target = default_target;
3154 bfd_boolean seenflag = FALSE;
3155
3156 #if defined (HAVE_SETLOCALE)
3157 #if defined (HAVE_LC_MESSAGES)
3158 setlocale (LC_MESSAGES, "");
3159 #endif
3160 setlocale (LC_CTYPE, "");
3161 #endif
3162
3163 bindtextdomain (PACKAGE, LOCALEDIR);
3164 textdomain (PACKAGE);
3165
3166 program_name = *argv;
3167 xmalloc_set_program_name (program_name);
3168
3169 START_PROGRESS (program_name, 0);
3170
3171 expandargv (&argc, &argv);
3172
3173 bfd_init ();
3174 set_default_bfd_target ();
3175
3176 while ((c = getopt_long (argc, argv,
3177 "pib:m:M:VvCdDlfFaHhrRtTxsSI:j:wE:zgeGW::",
3178 long_options, (int *) 0))
3179 != EOF)
3180 {
3181 switch (c)
3182 {
3183 case 0:
3184 break; /* We've been given a long option. */
3185 case 'm':
3186 machine = optarg;
3187 break;
3188 case 'M':
3189 if (disassembler_options)
3190 /* Ignore potential memory leak for now. */
3191 disassembler_options = concat (disassembler_options, ",",
3192 optarg, (const char *) NULL);
3193 else
3194 disassembler_options = optarg;
3195 break;
3196 case 'j':
3197 if (only_used == only_size)
3198 {
3199 only_size += 8;
3200 only = xrealloc (only, only_size * sizeof (char *));
3201 }
3202 only [only_used++] = optarg;
3203 break;
3204 case 'F':
3205 display_file_offsets = TRUE;
3206 break;
3207 case 'l':
3208 with_line_numbers = TRUE;
3209 break;
3210 case 'b':
3211 target = optarg;
3212 break;
3213 case 'C':
3214 do_demangle = TRUE;
3215 if (optarg != NULL)
3216 {
3217 enum demangling_styles style;
3218
3219 style = cplus_demangle_name_to_style (optarg);
3220 if (style == unknown_demangling)
3221 fatal (_("unknown demangling style `%s'"),
3222 optarg);
3223
3224 cplus_demangle_set_style (style);
3225 }
3226 break;
3227 case 'w':
3228 wide_output = TRUE;
3229 break;
3230 case OPTION_ADJUST_VMA:
3231 adjust_section_vma = parse_vma (optarg, "--adjust-vma");
3232 break;
3233 case OPTION_START_ADDRESS:
3234 start_address = parse_vma (optarg, "--start-address");
3235 if ((stop_address != (bfd_vma) -1) && stop_address <= start_address)
3236 fatal (_("error: the start address should be before the end address"));
3237 break;
3238 case OPTION_STOP_ADDRESS:
3239 stop_address = parse_vma (optarg, "--stop-address");
3240 if ((start_address != (bfd_vma) -1) && stop_address <= start_address)
3241 fatal (_("error: the stop address should be after the start address"));
3242 break;
3243 case OPTION_PREFIX:
3244 prefix = optarg;
3245 prefix_length = strlen (prefix);
3246 /* Remove an unnecessary trailing '/' */
3247 while (IS_DIR_SEPARATOR (prefix[prefix_length - 1]))
3248 prefix_length--;
3249 break;
3250 case OPTION_PREFIX_STRIP:
3251 prefix_strip = atoi (optarg);
3252 if (prefix_strip < 0)
3253 fatal (_("error: prefix strip must be non-negative"));
3254 break;
3255 case 'E':
3256 if (strcmp (optarg, "B") == 0)
3257 endian = BFD_ENDIAN_BIG;
3258 else if (strcmp (optarg, "L") == 0)
3259 endian = BFD_ENDIAN_LITTLE;
3260 else
3261 {
3262 non_fatal (_("unrecognized -E option"));
3263 usage (stderr, 1);
3264 }
3265 break;
3266 case OPTION_ENDIAN:
3267 if (strncmp (optarg, "big", strlen (optarg)) == 0)
3268 endian = BFD_ENDIAN_BIG;
3269 else if (strncmp (optarg, "little", strlen (optarg)) == 0)
3270 endian = BFD_ENDIAN_LITTLE;
3271 else
3272 {
3273 non_fatal (_("unrecognized --endian type `%s'"), optarg);
3274 usage (stderr, 1);
3275 }
3276 break;
3277
3278 case 'f':
3279 dump_file_header = TRUE;
3280 seenflag = TRUE;
3281 break;
3282 case 'i':
3283 formats_info = TRUE;
3284 seenflag = TRUE;
3285 break;
3286 case 'I':
3287 add_include_path (optarg);
3288 break;
3289 case 'p':
3290 dump_private_headers = TRUE;
3291 seenflag = TRUE;
3292 break;
3293 case 'x':
3294 dump_private_headers = TRUE;
3295 dump_symtab = TRUE;
3296 dump_reloc_info = TRUE;
3297 dump_file_header = TRUE;
3298 dump_ar_hdrs = TRUE;
3299 dump_section_headers = TRUE;
3300 seenflag = TRUE;
3301 break;
3302 case 't':
3303 dump_symtab = TRUE;
3304 seenflag = TRUE;
3305 break;
3306 case 'T':
3307 dump_dynamic_symtab = TRUE;
3308 seenflag = TRUE;
3309 break;
3310 case 'd':
3311 disassemble = TRUE;
3312 seenflag = TRUE;
3313 break;
3314 case 'z':
3315 disassemble_zeroes = TRUE;
3316 break;
3317 case 'D':
3318 disassemble = TRUE;
3319 disassemble_all = TRUE;
3320 seenflag = TRUE;
3321 break;
3322 case 'S':
3323 disassemble = TRUE;
3324 with_source_code = TRUE;
3325 seenflag = TRUE;
3326 break;
3327 case 'g':
3328 dump_debugging = 1;
3329 seenflag = TRUE;
3330 break;
3331 case 'e':
3332 dump_debugging = 1;
3333 dump_debugging_tags = 1;
3334 do_demangle = TRUE;
3335 seenflag = TRUE;
3336 break;
3337 case 'W':
3338 dump_dwarf_section_info = TRUE;
3339 seenflag = TRUE;
3340 if (optarg)
3341 dwarf_select_sections_by_letters (optarg);
3342 else
3343 dwarf_select_sections_all ();
3344 break;
3345 case OPTION_DWARF:
3346 dump_dwarf_section_info = TRUE;
3347 seenflag = TRUE;
3348 if (optarg)
3349 dwarf_select_sections_by_names (optarg);
3350 else
3351 dwarf_select_sections_all ();
3352 break;
3353 case 'G':
3354 dump_stab_section_info = TRUE;
3355 seenflag = TRUE;
3356 break;
3357 case 's':
3358 dump_section_contents = TRUE;
3359 seenflag = TRUE;
3360 break;
3361 case 'r':
3362 dump_reloc_info = TRUE;
3363 seenflag = TRUE;
3364 break;
3365 case 'R':
3366 dump_dynamic_reloc_info = TRUE;
3367 seenflag = TRUE;
3368 break;
3369 case 'a':
3370 dump_ar_hdrs = TRUE;
3371 seenflag = TRUE;
3372 break;
3373 case 'h':
3374 dump_section_headers = TRUE;
3375 seenflag = TRUE;
3376 break;
3377 case 'H':
3378 usage (stdout, 0);
3379 seenflag = TRUE;
3380 case 'v':
3381 case 'V':
3382 show_version = TRUE;
3383 seenflag = TRUE;
3384 break;
3385
3386 default:
3387 usage (stderr, 1);
3388 }
3389 }
3390
3391 if (show_version)
3392 print_version ("objdump");
3393
3394 if (!seenflag)
3395 usage (stderr, 2);
3396
3397 if (formats_info)
3398 exit_status = display_info ();
3399 else
3400 {
3401 if (optind == argc)
3402 display_file ("a.out", target);
3403 else
3404 for (; optind < argc;)
3405 display_file (argv[optind++], target);
3406 }
3407
3408 END_PROGRESS (program_name);
3409
3410 return exit_status;
3411 }
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