binutils/testsuite/
[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 int insn_width; /* --insn-width */
108 static bfd_vma start_address = (bfd_vma) -1; /* --start-address */
109 static bfd_vma stop_address = (bfd_vma) -1; /* --stop-address */
110 static int dump_debugging; /* --debugging */
111 static int dump_debugging_tags; /* --debugging-tags */
112 static int dump_special_syms = 0; /* --special-syms */
113 static bfd_vma adjust_section_vma = 0; /* --adjust-vma */
114 static int file_start_context = 0; /* --file-start-context */
115 static bfd_boolean display_file_offsets;/* -F */
116 static const char *prefix; /* --prefix */
117 static int prefix_strip; /* --prefix-strip */
118 static size_t prefix_length;
119
120 /* Pointer to an array of section names provided by
121 one or more "-j secname" command line options. */
122 static char **only;
123 /* The total number of slots in the only[] array. */
124 static size_t only_size = 0;
125 /* The number of occupied slots in the only[] array. */
126 static size_t only_used = 0;
127
128 /* Variables for handling include file path table. */
129 static const char **include_paths;
130 static int include_path_count;
131
132 /* Extra info to pass to the section disassembler and address printing
133 function. */
134 struct objdump_disasm_info
135 {
136 bfd * abfd;
137 asection * sec;
138 bfd_boolean require_sec;
139 arelent ** dynrelbuf;
140 long dynrelcount;
141 disassembler_ftype disassemble_fn;
142 arelent * reloc;
143 };
144
145 /* Architecture to disassemble for, or default if NULL. */
146 static char *machine = NULL;
147
148 /* Target specific options to the disassembler. */
149 static char *disassembler_options = NULL;
150
151 /* Endianness to disassemble for, or default if BFD_ENDIAN_UNKNOWN. */
152 static enum bfd_endian endian = BFD_ENDIAN_UNKNOWN;
153
154 /* The symbol table. */
155 static asymbol **syms;
156
157 /* Number of symbols in `syms'. */
158 static long symcount = 0;
159
160 /* The sorted symbol table. */
161 static asymbol **sorted_syms;
162
163 /* Number of symbols in `sorted_syms'. */
164 static long sorted_symcount = 0;
165
166 /* The dynamic symbol table. */
167 static asymbol **dynsyms;
168
169 /* The synthetic symbol table. */
170 static asymbol *synthsyms;
171 static long synthcount = 0;
172
173 /* Number of symbols in `dynsyms'. */
174 static long dynsymcount = 0;
175
176 static bfd_byte *stabs;
177 static bfd_size_type stab_size;
178
179 static char *strtab;
180 static bfd_size_type stabstr_size;
181
182 static bfd_boolean is_relocatable = FALSE;
183 \f
184 static void
185 usage (FILE *stream, int status)
186 {
187 fprintf (stream, _("Usage: %s <option(s)> <file(s)>\n"), program_name);
188 fprintf (stream, _(" Display information from object <file(s)>.\n"));
189 fprintf (stream, _(" At least one of the following switches must be given:\n"));
190 fprintf (stream, _("\
191 -a, --archive-headers Display archive header information\n\
192 -f, --file-headers Display the contents of the overall file header\n\
193 -p, --private-headers Display object format specific file header contents\n\
194 -h, --[section-]headers Display the contents of the section headers\n\
195 -x, --all-headers Display the contents of all headers\n\
196 -d, --disassemble Display assembler contents of executable sections\n\
197 -D, --disassemble-all Display assembler contents of all sections\n\
198 -S, --source Intermix source code with disassembly\n\
199 -s, --full-contents Display the full contents of all sections requested\n\
200 -g, --debugging Display debug information in object file\n\
201 -e, --debugging-tags Display debug information using ctags style\n\
202 -G, --stabs Display (in raw form) any STABS info in the file\n\
203 -W[lLiaprmfFsoR] or\n\
204 --dwarf[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=str,=loc,=Ranges]\n\
205 Display DWARF info in the file\n\
206 -t, --syms Display the contents of the symbol table(s)\n\
207 -T, --dynamic-syms Display the contents of the dynamic symbol table\n\
208 -r, --reloc Display the relocation entries in the file\n\
209 -R, --dynamic-reloc Display the dynamic relocation entries in the file\n\
210 @<file> Read options from <file>\n\
211 -v, --version Display this program's version number\n\
212 -i, --info List object formats and architectures supported\n\
213 -H, --help Display this information\n\
214 "));
215 if (status != 2)
216 {
217 fprintf (stream, _("\n The following switches are optional:\n"));
218 fprintf (stream, _("\
219 -b, --target=BFDNAME Specify the target object format as BFDNAME\n\
220 -m, --architecture=MACHINE Specify the target architecture as MACHINE\n\
221 -j, --section=NAME Only display information for section NAME\n\
222 -M, --disassembler-options=OPT Pass text OPT on to the disassembler\n\
223 -EB --endian=big Assume big endian format when disassembling\n\
224 -EL --endian=little Assume little endian format when disassembling\n\
225 --file-start-context Include context from start of file (with -S)\n\
226 -I, --include=DIR Add DIR to search list for source files\n\
227 -l, --line-numbers Include line numbers and filenames in output\n\
228 -F, --file-offsets Include file offsets when displaying information\n\
229 -C, --demangle[=STYLE] Decode mangled/processed symbol names\n\
230 The STYLE, if specified, can be `auto', `gnu',\n\
231 `lucid', `arm', `hp', `edg', `gnu-v3', `java'\n\
232 or `gnat'\n\
233 -w, --wide Format output for more than 80 columns\n\
234 -z, --disassemble-zeroes Do not skip blocks of zeroes when disassembling\n\
235 --start-address=ADDR Only process data whose address is >= ADDR\n\
236 --stop-address=ADDR Only process data whose address is <= ADDR\n\
237 --prefix-addresses Print complete address alongside disassembly\n\
238 --[no-]show-raw-insn Display hex alongside symbolic disassembly\n\
239 --insn-width=WIDTH Display WIDTH bytes on a signle line for -d\n\
240 --adjust-vma=OFFSET Add OFFSET to all displayed section addresses\n\
241 --special-syms Include special symbols in symbol dumps\n\
242 --prefix=PREFIX Add PREFIX to absolute paths for -S\n\
243 --prefix-strip=LEVEL Strip initial directory names for -S\n\
244 \n"));
245 list_supported_targets (program_name, stream);
246 list_supported_architectures (program_name, stream);
247
248 disassembler_usage (stream);
249 }
250 if (REPORT_BUGS_TO[0] && status == 0)
251 fprintf (stream, _("Report bugs to %s.\n"), REPORT_BUGS_TO);
252 exit (status);
253 }
254
255 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
256 enum option_values
257 {
258 OPTION_ENDIAN=150,
259 OPTION_START_ADDRESS,
260 OPTION_STOP_ADDRESS,
261 OPTION_DWARF,
262 OPTION_PREFIX,
263 OPTION_PREFIX_STRIP,
264 OPTION_INSN_WIDTH,
265 OPTION_ADJUST_VMA
266 };
267
268 static struct option long_options[]=
269 {
270 {"adjust-vma", required_argument, NULL, OPTION_ADJUST_VMA},
271 {"all-headers", no_argument, NULL, 'x'},
272 {"private-headers", no_argument, NULL, 'p'},
273 {"architecture", required_argument, NULL, 'm'},
274 {"archive-headers", no_argument, NULL, 'a'},
275 {"debugging", no_argument, NULL, 'g'},
276 {"debugging-tags", no_argument, NULL, 'e'},
277 {"demangle", optional_argument, NULL, 'C'},
278 {"disassemble", no_argument, NULL, 'd'},
279 {"disassemble-all", no_argument, NULL, 'D'},
280 {"disassembler-options", required_argument, NULL, 'M'},
281 {"disassemble-zeroes", no_argument, NULL, 'z'},
282 {"dynamic-reloc", no_argument, NULL, 'R'},
283 {"dynamic-syms", no_argument, NULL, 'T'},
284 {"endian", required_argument, NULL, OPTION_ENDIAN},
285 {"file-headers", no_argument, NULL, 'f'},
286 {"file-offsets", no_argument, NULL, 'F'},
287 {"file-start-context", no_argument, &file_start_context, 1},
288 {"full-contents", no_argument, NULL, 's'},
289 {"headers", no_argument, NULL, 'h'},
290 {"help", no_argument, NULL, 'H'},
291 {"info", no_argument, NULL, 'i'},
292 {"line-numbers", no_argument, NULL, 'l'},
293 {"no-show-raw-insn", no_argument, &show_raw_insn, -1},
294 {"prefix-addresses", no_argument, &prefix_addresses, 1},
295 {"reloc", no_argument, NULL, 'r'},
296 {"section", required_argument, NULL, 'j'},
297 {"section-headers", no_argument, NULL, 'h'},
298 {"show-raw-insn", no_argument, &show_raw_insn, 1},
299 {"source", no_argument, NULL, 'S'},
300 {"special-syms", no_argument, &dump_special_syms, 1},
301 {"include", required_argument, NULL, 'I'},
302 {"dwarf", optional_argument, NULL, OPTION_DWARF},
303 {"stabs", no_argument, NULL, 'G'},
304 {"start-address", required_argument, NULL, OPTION_START_ADDRESS},
305 {"stop-address", required_argument, NULL, OPTION_STOP_ADDRESS},
306 {"syms", no_argument, NULL, 't'},
307 {"target", required_argument, NULL, 'b'},
308 {"version", no_argument, NULL, 'V'},
309 {"wide", no_argument, NULL, 'w'},
310 {"prefix", required_argument, NULL, OPTION_PREFIX},
311 {"prefix-strip", required_argument, NULL, OPTION_PREFIX_STRIP},
312 {"insn-width", required_argument, NULL, OPTION_INSN_WIDTH},
313 {0, no_argument, 0, 0}
314 };
315 \f
316 static void
317 nonfatal (const char *msg)
318 {
319 bfd_nonfatal (msg);
320 exit_status = 1;
321 }
322 \f
323 /* Returns TRUE if the specified section should be dumped. */
324
325 static bfd_boolean
326 process_section_p (asection * section)
327 {
328 size_t i;
329
330 if (only == NULL)
331 return TRUE;
332
333 for (i = 0; i < only_used; i++)
334 if (strcmp (only [i], section->name) == 0)
335 return TRUE;
336
337 return FALSE;
338 }
339 \f
340 static void
341 dump_section_header (bfd *abfd, asection *section,
342 void *ignored ATTRIBUTE_UNUSED)
343 {
344 char *comma = "";
345 unsigned int opb = bfd_octets_per_byte (abfd);
346
347 /* Ignore linker created section. See elfNN_ia64_object_p in
348 bfd/elfxx-ia64.c. */
349 if (section->flags & SEC_LINKER_CREATED)
350 return;
351
352 /* PR 10413: Skip sections that we are ignoring. */
353 if (! process_section_p (section))
354 return;
355
356 printf ("%3d %-13s %08lx ", section->index,
357 bfd_get_section_name (abfd, section),
358 (unsigned long) bfd_section_size (abfd, section) / opb);
359 bfd_printf_vma (abfd, bfd_get_section_vma (abfd, section));
360 printf (" ");
361 bfd_printf_vma (abfd, section->lma);
362 printf (" %08lx 2**%u", (unsigned long) section->filepos,
363 bfd_get_section_alignment (abfd, section));
364 if (! wide_output)
365 printf ("\n ");
366 printf (" ");
367
368 #define PF(x, y) \
369 if (section->flags & x) { printf ("%s%s", comma, y); comma = ", "; }
370
371 PF (SEC_HAS_CONTENTS, "CONTENTS");
372 PF (SEC_ALLOC, "ALLOC");
373 PF (SEC_CONSTRUCTOR, "CONSTRUCTOR");
374 PF (SEC_LOAD, "LOAD");
375 PF (SEC_RELOC, "RELOC");
376 PF (SEC_READONLY, "READONLY");
377 PF (SEC_CODE, "CODE");
378 PF (SEC_DATA, "DATA");
379 PF (SEC_ROM, "ROM");
380 PF (SEC_DEBUGGING, "DEBUGGING");
381 PF (SEC_NEVER_LOAD, "NEVER_LOAD");
382 PF (SEC_EXCLUDE, "EXCLUDE");
383 PF (SEC_SORT_ENTRIES, "SORT_ENTRIES");
384 if (bfd_get_arch (abfd) == bfd_arch_tic54x)
385 {
386 PF (SEC_TIC54X_BLOCK, "BLOCK");
387 PF (SEC_TIC54X_CLINK, "CLINK");
388 }
389 PF (SEC_SMALL_DATA, "SMALL_DATA");
390 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
391 PF (SEC_COFF_SHARED, "SHARED");
392 PF (SEC_THREAD_LOCAL, "THREAD_LOCAL");
393 PF (SEC_GROUP, "GROUP");
394
395 if ((section->flags & SEC_LINK_ONCE) != 0)
396 {
397 const char *ls;
398 struct coff_comdat_info *comdat;
399
400 switch (section->flags & SEC_LINK_DUPLICATES)
401 {
402 default:
403 abort ();
404 case SEC_LINK_DUPLICATES_DISCARD:
405 ls = "LINK_ONCE_DISCARD";
406 break;
407 case SEC_LINK_DUPLICATES_ONE_ONLY:
408 ls = "LINK_ONCE_ONE_ONLY";
409 break;
410 case SEC_LINK_DUPLICATES_SAME_SIZE:
411 ls = "LINK_ONCE_SAME_SIZE";
412 break;
413 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
414 ls = "LINK_ONCE_SAME_CONTENTS";
415 break;
416 }
417 printf ("%s%s", comma, ls);
418
419 comdat = bfd_coff_get_comdat_section (abfd, section);
420 if (comdat != NULL)
421 printf (" (COMDAT %s %ld)", comdat->name, comdat->symbol);
422
423 comma = ", ";
424 }
425
426 printf ("\n");
427 #undef PF
428 }
429
430 static void
431 dump_headers (bfd *abfd)
432 {
433 printf (_("Sections:\n"));
434
435 #ifndef BFD64
436 printf (_("Idx Name Size VMA LMA File off Algn"));
437 #else
438 /* With BFD64, non-ELF returns -1 and wants always 64 bit addresses. */
439 if (bfd_get_arch_size (abfd) == 32)
440 printf (_("Idx Name Size VMA LMA File off Algn"));
441 else
442 printf (_("Idx Name Size VMA LMA File off Algn"));
443 #endif
444
445 if (wide_output)
446 printf (_(" Flags"));
447 if (abfd->flags & HAS_LOAD_PAGE)
448 printf (_(" Pg"));
449 printf ("\n");
450
451 bfd_map_over_sections (abfd, dump_section_header, NULL);
452 }
453 \f
454 static asymbol **
455 slurp_symtab (bfd *abfd)
456 {
457 asymbol **sy = NULL;
458 long storage;
459
460 if (!(bfd_get_file_flags (abfd) & HAS_SYMS))
461 {
462 symcount = 0;
463 return NULL;
464 }
465
466 storage = bfd_get_symtab_upper_bound (abfd);
467 if (storage < 0)
468 bfd_fatal (bfd_get_filename (abfd));
469 if (storage)
470 sy = xmalloc (storage);
471
472 symcount = bfd_canonicalize_symtab (abfd, sy);
473 if (symcount < 0)
474 bfd_fatal (bfd_get_filename (abfd));
475 return sy;
476 }
477
478 /* Read in the dynamic symbols. */
479
480 static asymbol **
481 slurp_dynamic_symtab (bfd *abfd)
482 {
483 asymbol **sy = NULL;
484 long storage;
485
486 storage = bfd_get_dynamic_symtab_upper_bound (abfd);
487 if (storage < 0)
488 {
489 if (!(bfd_get_file_flags (abfd) & DYNAMIC))
490 {
491 non_fatal (_("%s: not a dynamic object"), bfd_get_filename (abfd));
492 dynsymcount = 0;
493 return NULL;
494 }
495
496 bfd_fatal (bfd_get_filename (abfd));
497 }
498 if (storage)
499 sy = xmalloc (storage);
500
501 dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, sy);
502 if (dynsymcount < 0)
503 bfd_fatal (bfd_get_filename (abfd));
504 return sy;
505 }
506
507 /* Filter out (in place) symbols that are useless for disassembly.
508 COUNT is the number of elements in SYMBOLS.
509 Return the number of useful symbols. */
510
511 static long
512 remove_useless_symbols (asymbol **symbols, long count)
513 {
514 asymbol **in_ptr = symbols, **out_ptr = symbols;
515
516 while (--count >= 0)
517 {
518 asymbol *sym = *in_ptr++;
519
520 if (sym->name == NULL || sym->name[0] == '\0')
521 continue;
522 if (sym->flags & (BSF_DEBUGGING | BSF_SECTION_SYM))
523 continue;
524 if (bfd_is_und_section (sym->section)
525 || bfd_is_com_section (sym->section))
526 continue;
527
528 *out_ptr++ = sym;
529 }
530 return out_ptr - symbols;
531 }
532
533 /* Sort symbols into value order. */
534
535 static int
536 compare_symbols (const void *ap, const void *bp)
537 {
538 const asymbol *a = * (const asymbol **) ap;
539 const asymbol *b = * (const asymbol **) bp;
540 const char *an;
541 const char *bn;
542 size_t anl;
543 size_t bnl;
544 bfd_boolean af;
545 bfd_boolean bf;
546 flagword aflags;
547 flagword bflags;
548
549 if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
550 return 1;
551 else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
552 return -1;
553
554 if (a->section > b->section)
555 return 1;
556 else if (a->section < b->section)
557 return -1;
558
559 an = bfd_asymbol_name (a);
560 bn = bfd_asymbol_name (b);
561 anl = strlen (an);
562 bnl = strlen (bn);
563
564 /* The symbols gnu_compiled and gcc2_compiled convey no real
565 information, so put them after other symbols with the same value. */
566 af = (strstr (an, "gnu_compiled") != NULL
567 || strstr (an, "gcc2_compiled") != NULL);
568 bf = (strstr (bn, "gnu_compiled") != NULL
569 || strstr (bn, "gcc2_compiled") != NULL);
570
571 if (af && ! bf)
572 return 1;
573 if (! af && bf)
574 return -1;
575
576 /* We use a heuristic for the file name, to try to sort it after
577 more useful symbols. It may not work on non Unix systems, but it
578 doesn't really matter; the only difference is precisely which
579 symbol names get printed. */
580
581 #define file_symbol(s, sn, snl) \
582 (((s)->flags & BSF_FILE) != 0 \
583 || ((sn)[(snl) - 2] == '.' \
584 && ((sn)[(snl) - 1] == 'o' \
585 || (sn)[(snl) - 1] == 'a')))
586
587 af = file_symbol (a, an, anl);
588 bf = file_symbol (b, bn, bnl);
589
590 if (af && ! bf)
591 return 1;
592 if (! af && bf)
593 return -1;
594
595 /* Try to sort global symbols before local symbols before function
596 symbols before debugging symbols. */
597
598 aflags = a->flags;
599 bflags = b->flags;
600
601 if ((aflags & BSF_DEBUGGING) != (bflags & BSF_DEBUGGING))
602 {
603 if ((aflags & BSF_DEBUGGING) != 0)
604 return 1;
605 else
606 return -1;
607 }
608 if ((aflags & BSF_FUNCTION) != (bflags & BSF_FUNCTION))
609 {
610 if ((aflags & BSF_FUNCTION) != 0)
611 return -1;
612 else
613 return 1;
614 }
615 if ((aflags & BSF_LOCAL) != (bflags & BSF_LOCAL))
616 {
617 if ((aflags & BSF_LOCAL) != 0)
618 return 1;
619 else
620 return -1;
621 }
622 if ((aflags & BSF_GLOBAL) != (bflags & BSF_GLOBAL))
623 {
624 if ((aflags & BSF_GLOBAL) != 0)
625 return -1;
626 else
627 return 1;
628 }
629
630 /* Symbols that start with '.' might be section names, so sort them
631 after symbols that don't start with '.'. */
632 if (an[0] == '.' && bn[0] != '.')
633 return 1;
634 if (an[0] != '.' && bn[0] == '.')
635 return -1;
636
637 /* Finally, if we can't distinguish them in any other way, try to
638 get consistent results by sorting the symbols by name. */
639 return strcmp (an, bn);
640 }
641
642 /* Sort relocs into address order. */
643
644 static int
645 compare_relocs (const void *ap, const void *bp)
646 {
647 const arelent *a = * (const arelent **) ap;
648 const arelent *b = * (const arelent **) bp;
649
650 if (a->address > b->address)
651 return 1;
652 else if (a->address < b->address)
653 return -1;
654
655 /* So that associated relocations tied to the same address show up
656 in the correct order, we don't do any further sorting. */
657 if (a > b)
658 return 1;
659 else if (a < b)
660 return -1;
661 else
662 return 0;
663 }
664
665 /* Print an address (VMA) to the output stream in INFO.
666 If SKIP_ZEROES is TRUE, omit leading zeroes. */
667
668 static void
669 objdump_print_value (bfd_vma vma, struct disassemble_info *info,
670 bfd_boolean skip_zeroes)
671 {
672 char buf[30];
673 char *p;
674 struct objdump_disasm_info *aux;
675
676 aux = (struct objdump_disasm_info *) info->application_data;
677 bfd_sprintf_vma (aux->abfd, buf, vma);
678 if (! skip_zeroes)
679 p = buf;
680 else
681 {
682 for (p = buf; *p == '0'; ++p)
683 ;
684 if (*p == '\0')
685 --p;
686 }
687 (*info->fprintf_func) (info->stream, "%s", p);
688 }
689
690 /* Print the name of a symbol. */
691
692 static void
693 objdump_print_symname (bfd *abfd, struct disassemble_info *info,
694 asymbol *sym)
695 {
696 char *alloc;
697 const char *name;
698
699 alloc = NULL;
700 name = bfd_asymbol_name (sym);
701 if (do_demangle && name[0] != '\0')
702 {
703 /* Demangle the name. */
704 alloc = bfd_demangle (abfd, name, DMGL_ANSI | DMGL_PARAMS);
705 if (alloc != NULL)
706 name = alloc;
707 }
708
709 if (info != NULL)
710 (*info->fprintf_func) (info->stream, "%s", name);
711 else
712 printf ("%s", name);
713
714 if (alloc != NULL)
715 free (alloc);
716 }
717
718 /* Locate a symbol given a bfd and a section (from INFO->application_data),
719 and a VMA. If INFO->application_data->require_sec is TRUE, then always
720 require the symbol to be in the section. Returns NULL if there is no
721 suitable symbol. If PLACE is not NULL, then *PLACE is set to the index
722 of the symbol in sorted_syms. */
723
724 static asymbol *
725 find_symbol_for_address (bfd_vma vma,
726 struct disassemble_info *info,
727 long *place)
728 {
729 /* @@ Would it speed things up to cache the last two symbols returned,
730 and maybe their address ranges? For many processors, only one memory
731 operand can be present at a time, so the 2-entry cache wouldn't be
732 constantly churned by code doing heavy memory accesses. */
733
734 /* Indices in `sorted_syms'. */
735 long min = 0;
736 long max = sorted_symcount;
737 long thisplace;
738 struct objdump_disasm_info *aux;
739 bfd *abfd;
740 asection *sec;
741 unsigned int opb;
742 bfd_boolean want_section;
743
744 if (sorted_symcount < 1)
745 return NULL;
746
747 aux = (struct objdump_disasm_info *) info->application_data;
748 abfd = aux->abfd;
749 sec = aux->sec;
750 opb = info->octets_per_byte;
751
752 /* Perform a binary search looking for the closest symbol to the
753 required value. We are searching the range (min, max]. */
754 while (min + 1 < max)
755 {
756 asymbol *sym;
757
758 thisplace = (max + min) / 2;
759 sym = sorted_syms[thisplace];
760
761 if (bfd_asymbol_value (sym) > vma)
762 max = thisplace;
763 else if (bfd_asymbol_value (sym) < vma)
764 min = thisplace;
765 else
766 {
767 min = thisplace;
768 break;
769 }
770 }
771
772 /* The symbol we want is now in min, the low end of the range we
773 were searching. If there are several symbols with the same
774 value, we want the first one. */
775 thisplace = min;
776 while (thisplace > 0
777 && (bfd_asymbol_value (sorted_syms[thisplace])
778 == bfd_asymbol_value (sorted_syms[thisplace - 1])))
779 --thisplace;
780
781 /* Prefer a symbol in the current section if we have multple symbols
782 with the same value, as can occur with overlays or zero size
783 sections. */
784 min = thisplace;
785 while (min < max
786 && (bfd_asymbol_value (sorted_syms[min])
787 == bfd_asymbol_value (sorted_syms[thisplace])))
788 {
789 if (sorted_syms[min]->section == sec
790 && info->symbol_is_valid (sorted_syms[min], info))
791 {
792 thisplace = min;
793
794 if (place != NULL)
795 *place = thisplace;
796
797 return sorted_syms[thisplace];
798 }
799 ++min;
800 }
801
802 /* If the file is relocatable, and the symbol could be from this
803 section, prefer a symbol from this section over symbols from
804 others, even if the other symbol's value might be closer.
805
806 Note that this may be wrong for some symbol references if the
807 sections have overlapping memory ranges, but in that case there's
808 no way to tell what's desired without looking at the relocation
809 table.
810
811 Also give the target a chance to reject symbols. */
812 want_section = (aux->require_sec
813 || ((abfd->flags & HAS_RELOC) != 0
814 && vma >= bfd_get_section_vma (abfd, sec)
815 && vma < (bfd_get_section_vma (abfd, sec)
816 + bfd_section_size (abfd, sec) / opb)));
817 if ((sorted_syms[thisplace]->section != sec && want_section)
818 || !info->symbol_is_valid (sorted_syms[thisplace], info))
819 {
820 long i;
821 long newplace = sorted_symcount;
822
823 for (i = min - 1; i >= 0; i--)
824 {
825 if ((sorted_syms[i]->section == sec || !want_section)
826 && info->symbol_is_valid (sorted_syms[i], info))
827 {
828 if (newplace == sorted_symcount)
829 newplace = i;
830
831 if (bfd_asymbol_value (sorted_syms[i])
832 != bfd_asymbol_value (sorted_syms[newplace]))
833 break;
834
835 /* Remember this symbol and keep searching until we reach
836 an earlier address. */
837 newplace = i;
838 }
839 }
840
841 if (newplace != sorted_symcount)
842 thisplace = newplace;
843 else
844 {
845 /* We didn't find a good symbol with a smaller value.
846 Look for one with a larger value. */
847 for (i = thisplace + 1; i < sorted_symcount; i++)
848 {
849 if ((sorted_syms[i]->section == sec || !want_section)
850 && info->symbol_is_valid (sorted_syms[i], info))
851 {
852 thisplace = i;
853 break;
854 }
855 }
856 }
857
858 if ((sorted_syms[thisplace]->section != sec && want_section)
859 || !info->symbol_is_valid (sorted_syms[thisplace], info))
860 /* There is no suitable symbol. */
861 return NULL;
862 }
863
864 if (place != NULL)
865 *place = thisplace;
866
867 return sorted_syms[thisplace];
868 }
869
870 /* Print an address and the offset to the nearest symbol. */
871
872 static void
873 objdump_print_addr_with_sym (bfd *abfd, asection *sec, asymbol *sym,
874 bfd_vma vma, struct disassemble_info *info,
875 bfd_boolean skip_zeroes)
876 {
877 objdump_print_value (vma, info, skip_zeroes);
878
879 if (sym == NULL)
880 {
881 bfd_vma secaddr;
882
883 (*info->fprintf_func) (info->stream, " <%s",
884 bfd_get_section_name (abfd, sec));
885 secaddr = bfd_get_section_vma (abfd, sec);
886 if (vma < secaddr)
887 {
888 (*info->fprintf_func) (info->stream, "-0x");
889 objdump_print_value (secaddr - vma, info, TRUE);
890 }
891 else if (vma > secaddr)
892 {
893 (*info->fprintf_func) (info->stream, "+0x");
894 objdump_print_value (vma - secaddr, info, TRUE);
895 }
896 (*info->fprintf_func) (info->stream, ">");
897 }
898 else
899 {
900 (*info->fprintf_func) (info->stream, " <");
901 objdump_print_symname (abfd, info, sym);
902 if (bfd_asymbol_value (sym) > vma)
903 {
904 (*info->fprintf_func) (info->stream, "-0x");
905 objdump_print_value (bfd_asymbol_value (sym) - vma, info, TRUE);
906 }
907 else if (vma > bfd_asymbol_value (sym))
908 {
909 (*info->fprintf_func) (info->stream, "+0x");
910 objdump_print_value (vma - bfd_asymbol_value (sym), info, TRUE);
911 }
912 (*info->fprintf_func) (info->stream, ">");
913 }
914
915 if (display_file_offsets)
916 info->fprintf_func (info->stream, _(" (File Offset: 0x%lx)"),
917 (long int)(sec->filepos + (vma - sec->vma)));
918 }
919
920 /* Print an address (VMA), symbolically if possible.
921 If SKIP_ZEROES is TRUE, don't output leading zeroes. */
922
923 static void
924 objdump_print_addr (bfd_vma vma,
925 struct disassemble_info *info,
926 bfd_boolean skip_zeroes)
927 {
928 struct objdump_disasm_info *aux;
929 asymbol *sym = NULL;
930 bfd_boolean skip_find = FALSE;
931
932 aux = (struct objdump_disasm_info *) info->application_data;
933
934 if (sorted_symcount < 1)
935 {
936 (*info->fprintf_func) (info->stream, "0x");
937 objdump_print_value (vma, info, skip_zeroes);
938
939 if (display_file_offsets)
940 info->fprintf_func (info->stream, _(" (File Offset: 0x%lx)"),
941 (long int)(aux->sec->filepos + (vma - aux->sec->vma)));
942 return;
943 }
944
945 if (aux->reloc != NULL
946 && aux->reloc->sym_ptr_ptr != NULL
947 && * aux->reloc->sym_ptr_ptr != NULL)
948 {
949 sym = * aux->reloc->sym_ptr_ptr;
950
951 /* Adjust the vma to the reloc. */
952 vma += bfd_asymbol_value (sym);
953
954 if (bfd_is_und_section (bfd_get_section (sym)))
955 skip_find = TRUE;
956 }
957
958 if (!skip_find)
959 sym = find_symbol_for_address (vma, info, NULL);
960
961 objdump_print_addr_with_sym (aux->abfd, aux->sec, sym, vma, info,
962 skip_zeroes);
963 }
964
965 /* Print VMA to INFO. This function is passed to the disassembler
966 routine. */
967
968 static void
969 objdump_print_address (bfd_vma vma, struct disassemble_info *info)
970 {
971 objdump_print_addr (vma, info, ! prefix_addresses);
972 }
973
974 /* Determine if the given address has a symbol associated with it. */
975
976 static int
977 objdump_symbol_at_address (bfd_vma vma, struct disassemble_info * info)
978 {
979 asymbol * sym;
980
981 sym = find_symbol_for_address (vma, info, NULL);
982
983 return (sym != NULL && (bfd_asymbol_value (sym) == vma));
984 }
985
986 /* Hold the last function name and the last line number we displayed
987 in a disassembly. */
988
989 static char *prev_functionname;
990 static unsigned int prev_line;
991
992 /* We keep a list of all files that we have seen when doing a
993 disassembly with source, so that we know how much of the file to
994 display. This can be important for inlined functions. */
995
996 struct print_file_list
997 {
998 struct print_file_list *next;
999 const char *filename;
1000 const char *modname;
1001 const char *map;
1002 size_t mapsize;
1003 const char **linemap;
1004 unsigned maxline;
1005 unsigned last_line;
1006 int first;
1007 };
1008
1009 static struct print_file_list *print_files;
1010
1011 /* The number of preceding context lines to show when we start
1012 displaying a file for the first time. */
1013
1014 #define SHOW_PRECEDING_CONTEXT_LINES (5)
1015
1016 /* Read a complete file into memory. */
1017
1018 static const char *
1019 slurp_file (const char *fn, size_t *size)
1020 {
1021 #ifdef HAVE_MMAP
1022 int ps = getpagesize ();
1023 size_t msize;
1024 #endif
1025 const char *map;
1026 struct stat st;
1027 int fd = open (fn, O_RDONLY | O_BINARY);
1028
1029 if (fd < 0)
1030 return NULL;
1031 if (fstat (fd, &st) < 0)
1032 return NULL;
1033 *size = st.st_size;
1034 #ifdef HAVE_MMAP
1035 msize = (*size + ps - 1) & ~(ps - 1);
1036 map = mmap (NULL, msize, PROT_READ, MAP_SHARED, fd, 0);
1037 if (map != (char *)-1L)
1038 {
1039 close(fd);
1040 return map;
1041 }
1042 #endif
1043 map = malloc (*size);
1044 if (!map || (size_t) read (fd, (char *)map, *size) != *size)
1045 {
1046 free ((void *)map);
1047 map = NULL;
1048 }
1049 close (fd);
1050 return map;
1051 }
1052
1053 #define line_map_decrease 5
1054
1055 /* Precompute array of lines for a mapped file. */
1056
1057 static const char **
1058 index_file (const char *map, size_t size, unsigned int *maxline)
1059 {
1060 const char *p, *lstart, *end;
1061 int chars_per_line = 45; /* First iteration will use 40. */
1062 unsigned int lineno;
1063 const char **linemap = NULL;
1064 unsigned long line_map_size = 0;
1065
1066 lineno = 0;
1067 lstart = map;
1068 end = map + size;
1069
1070 for (p = map; p < end; p++)
1071 {
1072 if (*p == '\n')
1073 {
1074 if (p + 1 < end && p[1] == '\r')
1075 p++;
1076 }
1077 else if (*p == '\r')
1078 {
1079 if (p + 1 < end && p[1] == '\n')
1080 p++;
1081 }
1082 else
1083 continue;
1084
1085 /* End of line found. */
1086
1087 if (linemap == NULL || line_map_size < lineno + 1)
1088 {
1089 unsigned long newsize;
1090
1091 chars_per_line -= line_map_decrease;
1092 if (chars_per_line <= 1)
1093 chars_per_line = 1;
1094 line_map_size = size / chars_per_line + 1;
1095 if (line_map_size < lineno + 1)
1096 line_map_size = lineno + 1;
1097 newsize = line_map_size * sizeof (char *);
1098 linemap = xrealloc (linemap, newsize);
1099 }
1100
1101 linemap[lineno++] = lstart;
1102 lstart = p + 1;
1103 }
1104
1105 *maxline = lineno;
1106 return linemap;
1107 }
1108
1109 /* Tries to open MODNAME, and if successful adds a node to print_files
1110 linked list and returns that node. Returns NULL on failure. */
1111
1112 static struct print_file_list *
1113 try_print_file_open (const char *origname, const char *modname)
1114 {
1115 struct print_file_list *p;
1116
1117 p = xmalloc (sizeof (struct print_file_list));
1118
1119 p->map = slurp_file (modname, &p->mapsize);
1120 if (p->map == NULL)
1121 {
1122 free (p);
1123 return NULL;
1124 }
1125
1126 p->linemap = index_file (p->map, p->mapsize, &p->maxline);
1127 p->last_line = 0;
1128 p->filename = origname;
1129 p->modname = modname;
1130 p->next = print_files;
1131 p->first = 1;
1132 print_files = p;
1133 return p;
1134 }
1135
1136 /* If the the source file, as described in the symtab, is not found
1137 try to locate it in one of the paths specified with -I
1138 If found, add location to print_files linked list. */
1139
1140 static struct print_file_list *
1141 update_source_path (const char *filename)
1142 {
1143 struct print_file_list *p;
1144 const char *fname;
1145 int i;
1146
1147 if (filename == NULL)
1148 return NULL;
1149
1150 p = try_print_file_open (filename, filename);
1151 if (p != NULL)
1152 return p;
1153
1154 if (include_path_count == 0)
1155 return NULL;
1156
1157 /* Get the name of the file. */
1158 fname = strrchr (filename, '/');
1159 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
1160 {
1161 /* We could have a mixed forward/back slash case. */
1162 char *backslash = strrchr (filename, '\\');
1163 if (fname == NULL || (backslash != NULL && backslash > fname))
1164 fname = backslash;
1165 if (fname == NULL && filename[0] != '\0' && filename[1] == ':')
1166 fname = filename + 1;
1167 }
1168 #endif
1169 if (fname == NULL)
1170 fname = filename;
1171 else
1172 ++fname;
1173
1174 /* If file exists under a new path, we need to add it to the list
1175 so that show_line knows about it. */
1176 for (i = 0; i < include_path_count; i++)
1177 {
1178 char *modname = concat (include_paths[i], "/", fname, (const char *) 0);
1179
1180 p = try_print_file_open (filename, modname);
1181 if (p)
1182 return p;
1183
1184 free (modname);
1185 }
1186
1187 return NULL;
1188 }
1189
1190 /* Print a source file line. */
1191
1192 static void
1193 print_line (struct print_file_list *p, unsigned int line)
1194 {
1195 const char *l;
1196 size_t len;
1197
1198 --line;
1199 if (line >= p->maxline)
1200 return;
1201 l = p->linemap [line];
1202 /* Test fwrite return value to quiet glibc warning. */
1203 len = strcspn (l, "\n\r");
1204 if (len == 0 || fwrite (l, len, 1, stdout) == 1)
1205 putchar ('\n');
1206 }
1207
1208 /* Print a range of source code lines. */
1209
1210 static void
1211 dump_lines (struct print_file_list *p, unsigned int start, unsigned int end)
1212 {
1213 if (p->map == NULL)
1214 return;
1215 while (start <= end)
1216 {
1217 print_line (p, start);
1218 start++;
1219 }
1220 }
1221
1222 /* Show the line number, or the source line, in a disassembly
1223 listing. */
1224
1225 static void
1226 show_line (bfd *abfd, asection *section, bfd_vma addr_offset)
1227 {
1228 const char *filename;
1229 const char *functionname;
1230 unsigned int line;
1231 bfd_boolean reloc;
1232
1233 if (! with_line_numbers && ! with_source_code)
1234 return;
1235
1236 if (! bfd_find_nearest_line (abfd, section, syms, addr_offset, &filename,
1237 &functionname, &line))
1238 return;
1239
1240 if (filename != NULL && *filename == '\0')
1241 filename = NULL;
1242 if (functionname != NULL && *functionname == '\0')
1243 functionname = NULL;
1244
1245 if (filename
1246 && IS_ABSOLUTE_PATH (filename)
1247 && prefix)
1248 {
1249 char *path_up;
1250 const char *fname = filename;
1251 char *path = (char *) alloca (prefix_length + PATH_MAX + 1);
1252
1253 if (prefix_length)
1254 memcpy (path, prefix, prefix_length);
1255 path_up = path + prefix_length;
1256
1257 /* Build relocated filename, stripping off leading directories
1258 from the initial filename if requested. */
1259 if (prefix_strip > 0)
1260 {
1261 int level = 0;
1262 const char *s;
1263
1264 /* Skip selected directory levels. */
1265 for (s = fname + 1; *s != '\0' && level < prefix_strip; s++)
1266 if (IS_DIR_SEPARATOR(*s))
1267 {
1268 fname = s;
1269 level++;
1270 }
1271 }
1272
1273 /* Update complete filename. */
1274 strncpy (path_up, fname, PATH_MAX);
1275 path_up[PATH_MAX] = '\0';
1276
1277 filename = path;
1278 reloc = TRUE;
1279 }
1280 else
1281 reloc = FALSE;
1282
1283 if (with_line_numbers)
1284 {
1285 if (functionname != NULL
1286 && (prev_functionname == NULL
1287 || strcmp (functionname, prev_functionname) != 0))
1288 printf ("%s():\n", functionname);
1289 if (line > 0 && line != prev_line)
1290 printf ("%s:%u\n", filename == NULL ? "???" : filename, line);
1291 }
1292
1293 if (with_source_code
1294 && filename != NULL
1295 && line > 0)
1296 {
1297 struct print_file_list **pp, *p;
1298 unsigned l;
1299
1300 for (pp = &print_files; *pp != NULL; pp = &(*pp)->next)
1301 if (strcmp ((*pp)->filename, filename) == 0)
1302 break;
1303 p = *pp;
1304
1305 if (p == NULL)
1306 {
1307 if (reloc)
1308 filename = xstrdup (filename);
1309 p = update_source_path (filename);
1310 }
1311
1312 if (p != NULL && line != p->last_line)
1313 {
1314 if (file_start_context && p->first)
1315 l = 1;
1316 else
1317 {
1318 l = line - SHOW_PRECEDING_CONTEXT_LINES;
1319 if (l >= line)
1320 l = 1;
1321 if (p->last_line >= l && p->last_line <= line)
1322 l = p->last_line + 1;
1323 }
1324 dump_lines (p, l, line);
1325 p->last_line = line;
1326 p->first = 0;
1327 }
1328 }
1329
1330 if (functionname != NULL
1331 && (prev_functionname == NULL
1332 || strcmp (functionname, prev_functionname) != 0))
1333 {
1334 if (prev_functionname != NULL)
1335 free (prev_functionname);
1336 prev_functionname = xmalloc (strlen (functionname) + 1);
1337 strcpy (prev_functionname, functionname);
1338 }
1339
1340 if (line > 0 && line != prev_line)
1341 prev_line = line;
1342 }
1343
1344 /* Pseudo FILE object for strings. */
1345 typedef struct
1346 {
1347 char *buffer;
1348 size_t pos;
1349 size_t alloc;
1350 } SFILE;
1351
1352 /* sprintf to a "stream". */
1353
1354 static int ATTRIBUTE_PRINTF_2
1355 objdump_sprintf (SFILE *f, const char *format, ...)
1356 {
1357 size_t n;
1358 va_list args;
1359
1360 while (1)
1361 {
1362 size_t space = f->alloc - f->pos;
1363
1364 va_start (args, format);
1365 n = vsnprintf (f->buffer + f->pos, space, format, args);
1366 va_end (args);
1367
1368 if (space > n)
1369 break;
1370
1371 f->alloc = (f->alloc + n) * 2;
1372 f->buffer = xrealloc (f->buffer, f->alloc);
1373 }
1374 f->pos += n;
1375
1376 return n;
1377 }
1378
1379 /* The number of zeroes we want to see before we start skipping them.
1380 The number is arbitrarily chosen. */
1381
1382 #define DEFAULT_SKIP_ZEROES 8
1383
1384 /* The number of zeroes to skip at the end of a section. If the
1385 number of zeroes at the end is between SKIP_ZEROES_AT_END and
1386 SKIP_ZEROES, they will be disassembled. If there are fewer than
1387 SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic
1388 attempt to avoid disassembling zeroes inserted by section
1389 alignment. */
1390
1391 #define DEFAULT_SKIP_ZEROES_AT_END 3
1392
1393 /* Disassemble some data in memory between given values. */
1394
1395 static void
1396 disassemble_bytes (struct disassemble_info * info,
1397 disassembler_ftype disassemble_fn,
1398 bfd_boolean insns,
1399 bfd_byte * data,
1400 bfd_vma start_offset,
1401 bfd_vma stop_offset,
1402 bfd_vma rel_offset,
1403 arelent *** relppp,
1404 arelent ** relppend)
1405 {
1406 struct objdump_disasm_info *aux;
1407 asection *section;
1408 int octets_per_line;
1409 bfd_boolean done_dot;
1410 int skip_addr_chars;
1411 bfd_vma addr_offset;
1412 unsigned int opb = info->octets_per_byte;
1413 unsigned int skip_zeroes = info->skip_zeroes;
1414 unsigned int skip_zeroes_at_end = info->skip_zeroes_at_end;
1415 int octets = opb;
1416 SFILE sfile;
1417
1418 aux = (struct objdump_disasm_info *) info->application_data;
1419 section = aux->sec;
1420
1421 sfile.alloc = 120;
1422 sfile.buffer = xmalloc (sfile.alloc);
1423 sfile.pos = 0;
1424
1425 if (insn_width)
1426 octets_per_line = insn_width;
1427 else if (insns)
1428 octets_per_line = 4;
1429 else
1430 octets_per_line = 16;
1431
1432 /* Figure out how many characters to skip at the start of an
1433 address, to make the disassembly look nicer. We discard leading
1434 zeroes in chunks of 4, ensuring that there is always a leading
1435 zero remaining. */
1436 skip_addr_chars = 0;
1437 if (! prefix_addresses)
1438 {
1439 char buf[30];
1440
1441 bfd_sprintf_vma (aux->abfd, buf, section->vma + section->size / opb);
1442
1443 while (buf[skip_addr_chars] == '0')
1444 ++skip_addr_chars;
1445
1446 /* Don't discard zeros on overflow. */
1447 if (buf[skip_addr_chars] == '\0' && section->vma != 0)
1448 skip_addr_chars = 0;
1449
1450 if (skip_addr_chars != 0)
1451 skip_addr_chars = (skip_addr_chars - 1) & -4;
1452 }
1453
1454 info->insn_info_valid = 0;
1455
1456 done_dot = FALSE;
1457 addr_offset = start_offset;
1458 while (addr_offset < stop_offset)
1459 {
1460 bfd_vma z;
1461 bfd_boolean need_nl = FALSE;
1462 int previous_octets;
1463
1464 /* Remember the length of the previous instruction. */
1465 previous_octets = octets;
1466 octets = 0;
1467
1468 /* If we see more than SKIP_ZEROES octets of zeroes, we just
1469 print `...'. */
1470 for (z = addr_offset * opb; z < stop_offset * opb; z++)
1471 if (data[z] != 0)
1472 break;
1473 if (! disassemble_zeroes
1474 && (info->insn_info_valid == 0
1475 || info->branch_delay_insns == 0)
1476 && (z - addr_offset * opb >= skip_zeroes
1477 || (z == stop_offset * opb &&
1478 z - addr_offset * opb < skip_zeroes_at_end)))
1479 {
1480 /* If there are more nonzero octets to follow, we only skip
1481 zeroes in multiples of 4, to try to avoid running over
1482 the start of an instruction which happens to start with
1483 zero. */
1484 if (z != stop_offset * opb)
1485 z = addr_offset * opb + ((z - addr_offset * opb) &~ 3);
1486
1487 octets = z - addr_offset * opb;
1488
1489 /* If we are going to display more data, and we are displaying
1490 file offsets, then tell the user how many zeroes we skip
1491 and the file offset from where we resume dumping. */
1492 if (display_file_offsets && ((addr_offset + (octets / opb)) < stop_offset))
1493 printf ("\t... (skipping %d zeroes, resuming at file offset: 0x%lx)\n",
1494 octets / opb,
1495 (unsigned long) (section->filepos
1496 + (addr_offset + (octets / opb))));
1497 else
1498 printf ("\t...\n");
1499 }
1500 else
1501 {
1502 char buf[50];
1503 int bpc = 0;
1504 int pb = 0;
1505
1506 done_dot = FALSE;
1507
1508 if (with_line_numbers || with_source_code)
1509 show_line (aux->abfd, section, addr_offset);
1510
1511 if (! prefix_addresses)
1512 {
1513 char *s;
1514
1515 bfd_sprintf_vma (aux->abfd, buf, section->vma + addr_offset);
1516 for (s = buf + skip_addr_chars; *s == '0'; s++)
1517 *s = ' ';
1518 if (*s == '\0')
1519 *--s = '0';
1520 printf ("%s:\t", buf + skip_addr_chars);
1521 }
1522 else
1523 {
1524 aux->require_sec = TRUE;
1525 objdump_print_address (section->vma + addr_offset, info);
1526 aux->require_sec = FALSE;
1527 putchar (' ');
1528 }
1529
1530 if (insns)
1531 {
1532 sfile.pos = 0;
1533 info->fprintf_func = (fprintf_ftype) objdump_sprintf;
1534 info->stream = &sfile;
1535 info->bytes_per_line = 0;
1536 info->bytes_per_chunk = 0;
1537 info->flags = disassemble_all ? DISASSEMBLE_DATA : 0;
1538 if (machine)
1539 info->flags |= USER_SPECIFIED_MACHINE_TYPE;
1540
1541 if (info->disassembler_needs_relocs
1542 && (bfd_get_file_flags (aux->abfd) & EXEC_P) == 0
1543 && (bfd_get_file_flags (aux->abfd) & DYNAMIC) == 0
1544 && *relppp < relppend)
1545 {
1546 bfd_signed_vma distance_to_rel;
1547
1548 distance_to_rel = (**relppp)->address
1549 - (rel_offset + addr_offset);
1550
1551 /* Check to see if the current reloc is associated with
1552 the instruction that we are about to disassemble. */
1553 if (distance_to_rel == 0
1554 /* FIXME: This is wrong. We are trying to catch
1555 relocs that are addressed part way through the
1556 current instruction, as might happen with a packed
1557 VLIW instruction. Unfortunately we do not know the
1558 length of the current instruction since we have not
1559 disassembled it yet. Instead we take a guess based
1560 upon the length of the previous instruction. The
1561 proper solution is to have a new target-specific
1562 disassembler function which just returns the length
1563 of an instruction at a given address without trying
1564 to display its disassembly. */
1565 || (distance_to_rel > 0
1566 && distance_to_rel < (bfd_signed_vma) (previous_octets/ opb)))
1567 {
1568 info->flags |= INSN_HAS_RELOC;
1569 aux->reloc = **relppp;
1570 }
1571 else
1572 aux->reloc = NULL;
1573 }
1574
1575 octets = (*disassemble_fn) (section->vma + addr_offset, info);
1576 info->fprintf_func = (fprintf_ftype) fprintf;
1577 info->stream = stdout;
1578 if (insn_width == 0 && info->bytes_per_line != 0)
1579 octets_per_line = info->bytes_per_line;
1580 if (octets < 0)
1581 {
1582 if (sfile.pos)
1583 printf ("%s\n", sfile.buffer);
1584 break;
1585 }
1586 }
1587 else
1588 {
1589 bfd_vma j;
1590
1591 octets = octets_per_line;
1592 if (addr_offset + octets / opb > stop_offset)
1593 octets = (stop_offset - addr_offset) * opb;
1594
1595 for (j = addr_offset * opb; j < addr_offset * opb + octets; ++j)
1596 {
1597 if (ISPRINT (data[j]))
1598 buf[j - addr_offset * opb] = data[j];
1599 else
1600 buf[j - addr_offset * opb] = '.';
1601 }
1602 buf[j - addr_offset * opb] = '\0';
1603 }
1604
1605 if (prefix_addresses
1606 ? show_raw_insn > 0
1607 : show_raw_insn >= 0)
1608 {
1609 bfd_vma j;
1610
1611 /* If ! prefix_addresses and ! wide_output, we print
1612 octets_per_line octets per line. */
1613 pb = octets;
1614 if (pb > octets_per_line && ! prefix_addresses && ! wide_output)
1615 pb = octets_per_line;
1616
1617 if (info->bytes_per_chunk)
1618 bpc = info->bytes_per_chunk;
1619 else
1620 bpc = 1;
1621
1622 for (j = addr_offset * opb; j < addr_offset * opb + pb; j += bpc)
1623 {
1624 int k;
1625
1626 if (bpc > 1 && info->display_endian == BFD_ENDIAN_LITTLE)
1627 {
1628 for (k = bpc - 1; k >= 0; k--)
1629 printf ("%02x", (unsigned) data[j + k]);
1630 putchar (' ');
1631 }
1632 else
1633 {
1634 for (k = 0; k < bpc; k++)
1635 printf ("%02x", (unsigned) data[j + k]);
1636 putchar (' ');
1637 }
1638 }
1639
1640 for (; pb < octets_per_line; pb += bpc)
1641 {
1642 int k;
1643
1644 for (k = 0; k < bpc; k++)
1645 printf (" ");
1646 putchar (' ');
1647 }
1648
1649 /* Separate raw data from instruction by extra space. */
1650 if (insns)
1651 putchar ('\t');
1652 else
1653 printf (" ");
1654 }
1655
1656 if (! insns)
1657 printf ("%s", buf);
1658 else if (sfile.pos)
1659 printf ("%s", sfile.buffer);
1660
1661 if (prefix_addresses
1662 ? show_raw_insn > 0
1663 : show_raw_insn >= 0)
1664 {
1665 while (pb < octets)
1666 {
1667 bfd_vma j;
1668 char *s;
1669
1670 putchar ('\n');
1671 j = addr_offset * opb + pb;
1672
1673 bfd_sprintf_vma (aux->abfd, buf, section->vma + j / opb);
1674 for (s = buf + skip_addr_chars; *s == '0'; s++)
1675 *s = ' ';
1676 if (*s == '\0')
1677 *--s = '0';
1678 printf ("%s:\t", buf + skip_addr_chars);
1679
1680 pb += octets_per_line;
1681 if (pb > octets)
1682 pb = octets;
1683 for (; j < addr_offset * opb + pb; j += bpc)
1684 {
1685 int k;
1686
1687 if (bpc > 1 && info->display_endian == BFD_ENDIAN_LITTLE)
1688 {
1689 for (k = bpc - 1; k >= 0; k--)
1690 printf ("%02x", (unsigned) data[j + k]);
1691 putchar (' ');
1692 }
1693 else
1694 {
1695 for (k = 0; k < bpc; k++)
1696 printf ("%02x", (unsigned) data[j + k]);
1697 putchar (' ');
1698 }
1699 }
1700 }
1701 }
1702
1703 if (!wide_output)
1704 putchar ('\n');
1705 else
1706 need_nl = TRUE;
1707 }
1708
1709 while ((*relppp) < relppend
1710 && (**relppp)->address < rel_offset + addr_offset + octets / opb)
1711 {
1712 if (dump_reloc_info || dump_dynamic_reloc_info)
1713 {
1714 arelent *q;
1715
1716 q = **relppp;
1717
1718 if (wide_output)
1719 putchar ('\t');
1720 else
1721 printf ("\t\t\t");
1722
1723 objdump_print_value (section->vma - rel_offset + q->address,
1724 info, TRUE);
1725
1726 if (q->howto == NULL)
1727 printf (": *unknown*\t");
1728 else if (q->howto->name)
1729 printf (": %s\t", q->howto->name);
1730 else
1731 printf (": %d\t", q->howto->type);
1732
1733 if (q->sym_ptr_ptr == NULL || *q->sym_ptr_ptr == NULL)
1734 printf ("*unknown*");
1735 else
1736 {
1737 const char *sym_name;
1738
1739 sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
1740 if (sym_name != NULL && *sym_name != '\0')
1741 objdump_print_symname (aux->abfd, info, *q->sym_ptr_ptr);
1742 else
1743 {
1744 asection *sym_sec;
1745
1746 sym_sec = bfd_get_section (*q->sym_ptr_ptr);
1747 sym_name = bfd_get_section_name (aux->abfd, sym_sec);
1748 if (sym_name == NULL || *sym_name == '\0')
1749 sym_name = "*unknown*";
1750 printf ("%s", sym_name);
1751 }
1752 }
1753
1754 if (q->addend)
1755 {
1756 printf ("+0x");
1757 objdump_print_value (q->addend, info, TRUE);
1758 }
1759
1760 printf ("\n");
1761 need_nl = FALSE;
1762 }
1763 ++(*relppp);
1764 }
1765
1766 if (need_nl)
1767 printf ("\n");
1768
1769 addr_offset += octets / opb;
1770 }
1771
1772 free (sfile.buffer);
1773 }
1774
1775 static void
1776 disassemble_section (bfd *abfd, asection *section, void *info)
1777 {
1778 const struct elf_backend_data * bed;
1779 bfd_vma sign_adjust = 0;
1780 struct disassemble_info * pinfo = (struct disassemble_info *) info;
1781 struct objdump_disasm_info * paux;
1782 unsigned int opb = pinfo->octets_per_byte;
1783 bfd_byte * data = NULL;
1784 bfd_size_type datasize = 0;
1785 arelent ** rel_pp = NULL;
1786 arelent ** rel_ppstart = NULL;
1787 arelent ** rel_ppend;
1788 unsigned long stop_offset;
1789 asymbol * sym = NULL;
1790 long place = 0;
1791 long rel_count;
1792 bfd_vma rel_offset;
1793 unsigned long addr_offset;
1794
1795 /* Sections that do not contain machine
1796 code are not normally disassembled. */
1797 if (! disassemble_all
1798 && only == NULL
1799 && ((section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
1800 != (SEC_CODE | SEC_HAS_CONTENTS)))
1801 return;
1802
1803 if (! process_section_p (section))
1804 return;
1805
1806 datasize = bfd_get_section_size (section);
1807 if (datasize == 0)
1808 return;
1809
1810 /* Decide which set of relocs to use. Load them if necessary. */
1811 paux = (struct objdump_disasm_info *) pinfo->application_data;
1812 if (paux->dynrelbuf)
1813 {
1814 rel_pp = paux->dynrelbuf;
1815 rel_count = paux->dynrelcount;
1816 /* Dynamic reloc addresses are absolute, non-dynamic are section
1817 relative. REL_OFFSET specifies the reloc address corresponding
1818 to the start of this section. */
1819 rel_offset = section->vma;
1820 }
1821 else
1822 {
1823 rel_count = 0;
1824 rel_pp = NULL;
1825 rel_offset = 0;
1826
1827 if ((section->flags & SEC_RELOC) != 0
1828 && (dump_reloc_info || pinfo->disassembler_needs_relocs))
1829 {
1830 long relsize;
1831
1832 relsize = bfd_get_reloc_upper_bound (abfd, section);
1833 if (relsize < 0)
1834 bfd_fatal (bfd_get_filename (abfd));
1835
1836 if (relsize > 0)
1837 {
1838 rel_ppstart = rel_pp = xmalloc (relsize);
1839 rel_count = bfd_canonicalize_reloc (abfd, section, rel_pp, syms);
1840 if (rel_count < 0)
1841 bfd_fatal (bfd_get_filename (abfd));
1842
1843 /* Sort the relocs by address. */
1844 qsort (rel_pp, rel_count, sizeof (arelent *), compare_relocs);
1845 }
1846 }
1847 }
1848 rel_ppend = rel_pp + rel_count;
1849
1850 data = xmalloc (datasize);
1851
1852 bfd_get_section_contents (abfd, section, data, 0, datasize);
1853
1854 paux->sec = section;
1855 pinfo->buffer = data;
1856 pinfo->buffer_vma = section->vma;
1857 pinfo->buffer_length = datasize;
1858 pinfo->section = section;
1859
1860 if (start_address == (bfd_vma) -1
1861 || start_address < pinfo->buffer_vma)
1862 addr_offset = 0;
1863 else
1864 addr_offset = start_address - pinfo->buffer_vma;
1865
1866 if (stop_address == (bfd_vma) -1)
1867 stop_offset = datasize / opb;
1868 else
1869 {
1870 if (stop_address < pinfo->buffer_vma)
1871 stop_offset = 0;
1872 else
1873 stop_offset = stop_address - pinfo->buffer_vma;
1874 if (stop_offset > pinfo->buffer_length / opb)
1875 stop_offset = pinfo->buffer_length / opb;
1876 }
1877
1878 /* Skip over the relocs belonging to addresses below the
1879 start address. */
1880 while (rel_pp < rel_ppend
1881 && (*rel_pp)->address < rel_offset + addr_offset)
1882 ++rel_pp;
1883
1884 if (addr_offset < stop_offset)
1885 printf (_("\nDisassembly of section %s:\n"), section->name);
1886
1887 /* Find the nearest symbol forwards from our current position. */
1888 paux->require_sec = TRUE;
1889 sym = find_symbol_for_address (section->vma + addr_offset, info, &place);
1890 paux->require_sec = FALSE;
1891
1892 /* PR 9774: If the target used signed 32-bit addresses then we must make
1893 sure that we sign extend the value that we calculate for 'addr' in the
1894 loop below. */
1895 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
1896 && (bed = get_elf_backend_data (abfd)) != NULL
1897 && bed->sign_extend_vma)
1898 sign_adjust = 0x80000000;
1899
1900 /* Disassemble a block of instructions up to the address associated with
1901 the symbol we have just found. Then print the symbol and find the
1902 next symbol on. Repeat until we have disassembled the entire section
1903 or we have reached the end of the address range we are interested in. */
1904 while (addr_offset < stop_offset)
1905 {
1906 bfd_vma addr;
1907 asymbol *nextsym;
1908 unsigned long nextstop_offset;
1909 bfd_boolean insns;
1910
1911 addr = section->vma + addr_offset;
1912 addr = ((addr & ((sign_adjust << 1) - 1)) ^ sign_adjust) - sign_adjust;
1913
1914 if (sym != NULL && bfd_asymbol_value (sym) <= addr)
1915 {
1916 int x;
1917
1918 for (x = place;
1919 (x < sorted_symcount
1920 && (bfd_asymbol_value (sorted_syms[x]) <= addr));
1921 ++x)
1922 continue;
1923
1924 pinfo->symbols = sorted_syms + place;
1925 pinfo->num_symbols = x - place;
1926 pinfo->symtab_pos = place;
1927 }
1928 else
1929 {
1930 pinfo->symbols = NULL;
1931 pinfo->num_symbols = 0;
1932 pinfo->symtab_pos = -1;
1933 }
1934
1935 if (! prefix_addresses)
1936 {
1937 pinfo->fprintf_func (pinfo->stream, "\n");
1938 objdump_print_addr_with_sym (abfd, section, sym, addr,
1939 pinfo, FALSE);
1940 pinfo->fprintf_func (pinfo->stream, ":\n");
1941 }
1942
1943 if (sym != NULL && bfd_asymbol_value (sym) > addr)
1944 nextsym = sym;
1945 else if (sym == NULL)
1946 nextsym = NULL;
1947 else
1948 {
1949 #define is_valid_next_sym(SYM) \
1950 ((SYM)->section == section \
1951 && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
1952 && pinfo->symbol_is_valid (SYM, pinfo))
1953
1954 /* Search forward for the next appropriate symbol in
1955 SECTION. Note that all the symbols are sorted
1956 together into one big array, and that some sections
1957 may have overlapping addresses. */
1958 while (place < sorted_symcount
1959 && ! is_valid_next_sym (sorted_syms [place]))
1960 ++place;
1961
1962 if (place >= sorted_symcount)
1963 nextsym = NULL;
1964 else
1965 nextsym = sorted_syms[place];
1966 }
1967
1968 if (sym != NULL && bfd_asymbol_value (sym) > addr)
1969 nextstop_offset = bfd_asymbol_value (sym) - section->vma;
1970 else if (nextsym == NULL)
1971 nextstop_offset = stop_offset;
1972 else
1973 nextstop_offset = bfd_asymbol_value (nextsym) - section->vma;
1974
1975 if (nextstop_offset > stop_offset
1976 || nextstop_offset <= addr_offset)
1977 nextstop_offset = stop_offset;
1978
1979 /* If a symbol is explicitly marked as being an object
1980 rather than a function, just dump the bytes without
1981 disassembling them. */
1982 if (disassemble_all
1983 || sym == NULL
1984 || sym->section != section
1985 || bfd_asymbol_value (sym) > addr
1986 || ((sym->flags & BSF_OBJECT) == 0
1987 && (strstr (bfd_asymbol_name (sym), "gnu_compiled")
1988 == NULL)
1989 && (strstr (bfd_asymbol_name (sym), "gcc2_compiled")
1990 == NULL))
1991 || (sym->flags & BSF_FUNCTION) != 0)
1992 insns = TRUE;
1993 else
1994 insns = FALSE;
1995
1996 disassemble_bytes (pinfo, paux->disassemble_fn, insns, data,
1997 addr_offset, nextstop_offset,
1998 rel_offset, &rel_pp, rel_ppend);
1999
2000 addr_offset = nextstop_offset;
2001 sym = nextsym;
2002 }
2003
2004 free (data);
2005
2006 if (rel_ppstart != NULL)
2007 free (rel_ppstart);
2008 }
2009
2010 /* Disassemble the contents of an object file. */
2011
2012 static void
2013 disassemble_data (bfd *abfd)
2014 {
2015 struct disassemble_info disasm_info;
2016 struct objdump_disasm_info aux;
2017 long i;
2018
2019 print_files = NULL;
2020 prev_functionname = NULL;
2021 prev_line = -1;
2022
2023 /* We make a copy of syms to sort. We don't want to sort syms
2024 because that will screw up the relocs. */
2025 sorted_symcount = symcount ? symcount : dynsymcount;
2026 sorted_syms = xmalloc ((sorted_symcount + synthcount) * sizeof (asymbol *));
2027 memcpy (sorted_syms, symcount ? syms : dynsyms,
2028 sorted_symcount * sizeof (asymbol *));
2029
2030 sorted_symcount = remove_useless_symbols (sorted_syms, sorted_symcount);
2031
2032 for (i = 0; i < synthcount; ++i)
2033 {
2034 sorted_syms[sorted_symcount] = synthsyms + i;
2035 ++sorted_symcount;
2036 }
2037
2038 /* Sort the symbols into section and symbol order. */
2039 qsort (sorted_syms, sorted_symcount, sizeof (asymbol *), compare_symbols);
2040
2041 init_disassemble_info (&disasm_info, stdout, (fprintf_ftype) fprintf);
2042
2043 disasm_info.application_data = (void *) &aux;
2044 aux.abfd = abfd;
2045 aux.require_sec = FALSE;
2046 aux.dynrelbuf = NULL;
2047 aux.dynrelcount = 0;
2048 aux.reloc = NULL;
2049
2050 disasm_info.print_address_func = objdump_print_address;
2051 disasm_info.symbol_at_address_func = objdump_symbol_at_address;
2052
2053 if (machine != NULL)
2054 {
2055 const bfd_arch_info_type *info = bfd_scan_arch (machine);
2056
2057 if (info == NULL)
2058 fatal (_("Can't use supplied machine %s"), machine);
2059
2060 abfd->arch_info = info;
2061 }
2062
2063 if (endian != BFD_ENDIAN_UNKNOWN)
2064 {
2065 struct bfd_target *xvec;
2066
2067 xvec = xmalloc (sizeof (struct bfd_target));
2068 memcpy (xvec, abfd->xvec, sizeof (struct bfd_target));
2069 xvec->byteorder = endian;
2070 abfd->xvec = xvec;
2071 }
2072
2073 /* Use libopcodes to locate a suitable disassembler. */
2074 aux.disassemble_fn = disassembler (abfd);
2075 if (!aux.disassemble_fn)
2076 {
2077 non_fatal (_("Can't disassemble for architecture %s\n"),
2078 bfd_printable_arch_mach (bfd_get_arch (abfd), 0));
2079 exit_status = 1;
2080 return;
2081 }
2082
2083 disasm_info.flavour = bfd_get_flavour (abfd);
2084 disasm_info.arch = bfd_get_arch (abfd);
2085 disasm_info.mach = bfd_get_mach (abfd);
2086 disasm_info.disassembler_options = disassembler_options;
2087 disasm_info.octets_per_byte = bfd_octets_per_byte (abfd);
2088 disasm_info.skip_zeroes = DEFAULT_SKIP_ZEROES;
2089 disasm_info.skip_zeroes_at_end = DEFAULT_SKIP_ZEROES_AT_END;
2090 disasm_info.disassembler_needs_relocs = FALSE;
2091
2092 if (bfd_big_endian (abfd))
2093 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_BIG;
2094 else if (bfd_little_endian (abfd))
2095 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_LITTLE;
2096 else
2097 /* ??? Aborting here seems too drastic. We could default to big or little
2098 instead. */
2099 disasm_info.endian = BFD_ENDIAN_UNKNOWN;
2100
2101 /* Allow the target to customize the info structure. */
2102 disassemble_init_for_target (& disasm_info);
2103
2104 /* Pre-load the dynamic relocs if we are going
2105 to be dumping them along with the disassembly. */
2106 if (dump_dynamic_reloc_info)
2107 {
2108 long relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2109
2110 if (relsize < 0)
2111 bfd_fatal (bfd_get_filename (abfd));
2112
2113 if (relsize > 0)
2114 {
2115 aux.dynrelbuf = xmalloc (relsize);
2116 aux.dynrelcount = bfd_canonicalize_dynamic_reloc (abfd,
2117 aux.dynrelbuf,
2118 dynsyms);
2119 if (aux.dynrelcount < 0)
2120 bfd_fatal (bfd_get_filename (abfd));
2121
2122 /* Sort the relocs by address. */
2123 qsort (aux.dynrelbuf, aux.dynrelcount, sizeof (arelent *),
2124 compare_relocs);
2125 }
2126 }
2127 disasm_info.symtab = sorted_syms;
2128 disasm_info.symtab_size = sorted_symcount;
2129
2130 bfd_map_over_sections (abfd, disassemble_section, & disasm_info);
2131
2132 if (aux.dynrelbuf != NULL)
2133 free (aux.dynrelbuf);
2134 free (sorted_syms);
2135 }
2136 \f
2137 static int
2138 load_specific_debug_section (enum dwarf_section_display_enum debug,
2139 asection *sec, void *file)
2140 {
2141 struct dwarf_section *section = &debug_displays [debug].section;
2142 bfd *abfd = file;
2143 bfd_boolean ret;
2144 int section_is_compressed;
2145
2146 /* If it is already loaded, do nothing. */
2147 if (section->start != NULL)
2148 return 1;
2149
2150 section_is_compressed = section->name == section->compressed_name;
2151
2152 section->address = 0;
2153 section->size = bfd_get_section_size (sec);
2154 section->start = xmalloc (section->size);
2155
2156 if (is_relocatable && debug_displays [debug].relocate)
2157 ret = bfd_simple_get_relocated_section_contents (abfd,
2158 sec,
2159 section->start,
2160 syms) != NULL;
2161 else
2162 ret = bfd_get_section_contents (abfd, sec, section->start, 0,
2163 section->size);
2164
2165 if (! ret)
2166 {
2167 free_debug_section (debug);
2168 printf (_("\nCan't get contents for section '%s'.\n"),
2169 section->name);
2170 return 0;
2171 }
2172
2173 if (section_is_compressed)
2174 {
2175 bfd_size_type size = section->size;
2176 if (! bfd_uncompress_section_contents (&section->start, &size))
2177 {
2178 free_debug_section (debug);
2179 printf (_("\nCan't uncompress section '%s'.\n"), section->name);
2180 return 0;
2181 }
2182 section->size = size;
2183 }
2184
2185 return 1;
2186 }
2187
2188 int
2189 load_debug_section (enum dwarf_section_display_enum debug, void *file)
2190 {
2191 struct dwarf_section *section = &debug_displays [debug].section;
2192 bfd *abfd = file;
2193 asection *sec;
2194
2195 /* If it is already loaded, do nothing. */
2196 if (section->start != NULL)
2197 return 1;
2198
2199 /* Locate the debug section. */
2200 sec = bfd_get_section_by_name (abfd, section->uncompressed_name);
2201 if (sec != NULL)
2202 section->name = section->uncompressed_name;
2203 else
2204 {
2205 sec = bfd_get_section_by_name (abfd, section->compressed_name);
2206 if (sec != NULL)
2207 section->name = section->compressed_name;
2208 }
2209 if (sec == NULL)
2210 return 0;
2211
2212 return load_specific_debug_section (debug, sec, file);
2213 }
2214
2215 void
2216 free_debug_section (enum dwarf_section_display_enum debug)
2217 {
2218 struct dwarf_section *section = &debug_displays [debug].section;
2219
2220 if (section->start == NULL)
2221 return;
2222
2223 free ((char *) section->start);
2224 section->start = NULL;
2225 section->address = 0;
2226 section->size = 0;
2227 }
2228
2229 static void
2230 dump_dwarf_section (bfd *abfd, asection *section,
2231 void *arg ATTRIBUTE_UNUSED)
2232 {
2233 const char *name = bfd_get_section_name (abfd, section);
2234 const char *match;
2235 enum dwarf_section_display_enum i;
2236
2237 if (CONST_STRNEQ (name, ".gnu.linkonce.wi."))
2238 match = ".debug_info";
2239 else
2240 match = name;
2241
2242 for (i = 0; i < max; i++)
2243 if ((strcmp (debug_displays [i].section.uncompressed_name, match) == 0
2244 || strcmp (debug_displays [i].section.compressed_name, match) == 0)
2245 && debug_displays [i].enabled != NULL
2246 && *debug_displays [i].enabled)
2247 {
2248 struct dwarf_section *sec = &debug_displays [i].section;
2249
2250 if (strcmp (sec->uncompressed_name, match) == 0)
2251 sec->name = sec->uncompressed_name;
2252 else
2253 sec->name = sec->compressed_name;
2254 if (load_specific_debug_section (i, section, abfd))
2255 {
2256 debug_displays [i].display (sec, abfd);
2257
2258 if (i != info && i != abbrev)
2259 free_debug_section (i);
2260 }
2261 break;
2262 }
2263 }
2264
2265 /* Dump the dwarf debugging information. */
2266
2267 static void
2268 dump_dwarf (bfd *abfd)
2269 {
2270 is_relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2271
2272 /* FIXME: bfd_get_arch_size may return -1. We assume that 64bit
2273 targets will return 64. */
2274 eh_addr_size = bfd_get_arch_size (abfd) == 64 ? 8 : 4;
2275
2276 if (bfd_big_endian (abfd))
2277 byte_get = byte_get_big_endian;
2278 else if (bfd_little_endian (abfd))
2279 byte_get = byte_get_little_endian;
2280 else
2281 abort ();
2282
2283 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
2284 {
2285 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2286 init_dwarf_regnames (bed->elf_machine_code);
2287 }
2288
2289 bfd_map_over_sections (abfd, dump_dwarf_section, NULL);
2290
2291 free_debug_memory ();
2292 }
2293 \f
2294 /* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
2295 it. Return NULL on failure. */
2296
2297 static char *
2298 read_section_stabs (bfd *abfd, const char *sect_name, bfd_size_type *size_ptr)
2299 {
2300 asection *stabsect;
2301 bfd_size_type size;
2302 char *contents;
2303
2304 stabsect = bfd_get_section_by_name (abfd, sect_name);
2305 if (stabsect == NULL)
2306 {
2307 printf (_("No %s section present\n\n"), sect_name);
2308 return FALSE;
2309 }
2310
2311 size = bfd_section_size (abfd, stabsect);
2312 contents = xmalloc (size);
2313
2314 if (! bfd_get_section_contents (abfd, stabsect, contents, 0, size))
2315 {
2316 non_fatal (_("Reading %s section of %s failed: %s"),
2317 sect_name, bfd_get_filename (abfd),
2318 bfd_errmsg (bfd_get_error ()));
2319 free (contents);
2320 exit_status = 1;
2321 return NULL;
2322 }
2323
2324 *size_ptr = size;
2325
2326 return contents;
2327 }
2328
2329 /* Stabs entries use a 12 byte format:
2330 4 byte string table index
2331 1 byte stab type
2332 1 byte stab other field
2333 2 byte stab desc field
2334 4 byte stab value
2335 FIXME: This will have to change for a 64 bit object format. */
2336
2337 #define STRDXOFF (0)
2338 #define TYPEOFF (4)
2339 #define OTHEROFF (5)
2340 #define DESCOFF (6)
2341 #define VALOFF (8)
2342 #define STABSIZE (12)
2343
2344 /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
2345 using string table section STRSECT_NAME (in `strtab'). */
2346
2347 static void
2348 print_section_stabs (bfd *abfd,
2349 const char *stabsect_name,
2350 unsigned *string_offset_ptr)
2351 {
2352 int i;
2353 unsigned file_string_table_offset = 0;
2354 unsigned next_file_string_table_offset = *string_offset_ptr;
2355 bfd_byte *stabp, *stabs_end;
2356
2357 stabp = stabs;
2358 stabs_end = stabp + stab_size;
2359
2360 printf (_("Contents of %s section:\n\n"), stabsect_name);
2361 printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
2362
2363 /* Loop through all symbols and print them.
2364
2365 We start the index at -1 because there is a dummy symbol on
2366 the front of stabs-in-{coff,elf} sections that supplies sizes. */
2367 for (i = -1; stabp < stabs_end; stabp += STABSIZE, i++)
2368 {
2369 const char *name;
2370 unsigned long strx;
2371 unsigned char type, other;
2372 unsigned short desc;
2373 bfd_vma value;
2374
2375 strx = bfd_h_get_32 (abfd, stabp + STRDXOFF);
2376 type = bfd_h_get_8 (abfd, stabp + TYPEOFF);
2377 other = bfd_h_get_8 (abfd, stabp + OTHEROFF);
2378 desc = bfd_h_get_16 (abfd, stabp + DESCOFF);
2379 value = bfd_h_get_32 (abfd, stabp + VALOFF);
2380
2381 printf ("\n%-6d ", i);
2382 /* Either print the stab name, or, if unnamed, print its number
2383 again (makes consistent formatting for tools like awk). */
2384 name = bfd_get_stab_name (type);
2385 if (name != NULL)
2386 printf ("%-6s", name);
2387 else if (type == N_UNDF)
2388 printf ("HdrSym");
2389 else
2390 printf ("%-6d", type);
2391 printf (" %-6d %-6d ", other, desc);
2392 bfd_printf_vma (abfd, value);
2393 printf (" %-6lu", strx);
2394
2395 /* Symbols with type == 0 (N_UNDF) specify the length of the
2396 string table associated with this file. We use that info
2397 to know how to relocate the *next* file's string table indices. */
2398 if (type == N_UNDF)
2399 {
2400 file_string_table_offset = next_file_string_table_offset;
2401 next_file_string_table_offset += value;
2402 }
2403 else
2404 {
2405 /* Using the (possibly updated) string table offset, print the
2406 string (if any) associated with this symbol. */
2407 if ((strx + file_string_table_offset) < stabstr_size)
2408 printf (" %s", &strtab[strx + file_string_table_offset]);
2409 else
2410 printf (" *");
2411 }
2412 }
2413 printf ("\n\n");
2414 *string_offset_ptr = next_file_string_table_offset;
2415 }
2416
2417 typedef struct
2418 {
2419 const char * section_name;
2420 const char * string_section_name;
2421 unsigned string_offset;
2422 }
2423 stab_section_names;
2424
2425 static void
2426 find_stabs_section (bfd *abfd, asection *section, void *names)
2427 {
2428 int len;
2429 stab_section_names * sought = (stab_section_names *) names;
2430
2431 /* Check for section names for which stabsect_name is a prefix, to
2432 handle .stab.N, etc. */
2433 len = strlen (sought->section_name);
2434
2435 /* If the prefix matches, and the files section name ends with a
2436 nul or a digit, then we match. I.e., we want either an exact
2437 match or a section followed by a number. */
2438 if (strncmp (sought->section_name, section->name, len) == 0
2439 && (section->name[len] == 0
2440 || (section->name[len] == '.' && ISDIGIT (section->name[len + 1]))))
2441 {
2442 if (strtab == NULL)
2443 strtab = read_section_stabs (abfd, sought->string_section_name,
2444 &stabstr_size);
2445
2446 if (strtab)
2447 {
2448 stabs = (bfd_byte *) read_section_stabs (abfd, section->name,
2449 &stab_size);
2450 if (stabs)
2451 print_section_stabs (abfd, section->name, &sought->string_offset);
2452 }
2453 }
2454 }
2455
2456 static void
2457 dump_stabs_section (bfd *abfd, char *stabsect_name, char *strsect_name)
2458 {
2459 stab_section_names s;
2460
2461 s.section_name = stabsect_name;
2462 s.string_section_name = strsect_name;
2463 s.string_offset = 0;
2464
2465 bfd_map_over_sections (abfd, find_stabs_section, & s);
2466
2467 free (strtab);
2468 strtab = NULL;
2469 }
2470
2471 /* Dump the any sections containing stabs debugging information. */
2472
2473 static void
2474 dump_stabs (bfd *abfd)
2475 {
2476 dump_stabs_section (abfd, ".stab", ".stabstr");
2477 dump_stabs_section (abfd, ".stab.excl", ".stab.exclstr");
2478 dump_stabs_section (abfd, ".stab.index", ".stab.indexstr");
2479
2480 /* For Darwin. */
2481 dump_stabs_section (abfd, "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr");
2482
2483 dump_stabs_section (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
2484 }
2485 \f
2486 static void
2487 dump_bfd_header (bfd *abfd)
2488 {
2489 char *comma = "";
2490
2491 printf (_("architecture: %s, "),
2492 bfd_printable_arch_mach (bfd_get_arch (abfd),
2493 bfd_get_mach (abfd)));
2494 printf (_("flags 0x%08x:\n"), abfd->flags);
2495
2496 #define PF(x, y) if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
2497 PF (HAS_RELOC, "HAS_RELOC");
2498 PF (EXEC_P, "EXEC_P");
2499 PF (HAS_LINENO, "HAS_LINENO");
2500 PF (HAS_DEBUG, "HAS_DEBUG");
2501 PF (HAS_SYMS, "HAS_SYMS");
2502 PF (HAS_LOCALS, "HAS_LOCALS");
2503 PF (DYNAMIC, "DYNAMIC");
2504 PF (WP_TEXT, "WP_TEXT");
2505 PF (D_PAGED, "D_PAGED");
2506 PF (BFD_IS_RELAXABLE, "BFD_IS_RELAXABLE");
2507 PF (HAS_LOAD_PAGE, "HAS_LOAD_PAGE");
2508 printf (_("\nstart address 0x"));
2509 bfd_printf_vma (abfd, abfd->start_address);
2510 printf ("\n");
2511 }
2512
2513 \f
2514 static void
2515 dump_bfd_private_header (bfd *abfd)
2516 {
2517 bfd_print_private_bfd_data (abfd, stdout);
2518 }
2519
2520 \f
2521 /* Display a section in hexadecimal format with associated characters.
2522 Each line prefixed by the zero padded address. */
2523
2524 static void
2525 dump_section (bfd *abfd, asection *section, void *dummy ATTRIBUTE_UNUSED)
2526 {
2527 bfd_byte *data = 0;
2528 bfd_size_type datasize;
2529 bfd_size_type addr_offset;
2530 bfd_size_type start_offset;
2531 bfd_size_type stop_offset;
2532 unsigned int opb = bfd_octets_per_byte (abfd);
2533 /* Bytes per line. */
2534 const int onaline = 16;
2535 char buf[64];
2536 int count;
2537 int width;
2538
2539 if ((section->flags & SEC_HAS_CONTENTS) == 0)
2540 return;
2541
2542 if (! process_section_p (section))
2543 return;
2544
2545 if ((datasize = bfd_section_size (abfd, section)) == 0)
2546 return;
2547
2548 /* Compute the address range to display. */
2549 if (start_address == (bfd_vma) -1
2550 || start_address < section->vma)
2551 start_offset = 0;
2552 else
2553 start_offset = start_address - section->vma;
2554
2555 if (stop_address == (bfd_vma) -1)
2556 stop_offset = datasize / opb;
2557 else
2558 {
2559 if (stop_address < section->vma)
2560 stop_offset = 0;
2561 else
2562 stop_offset = stop_address - section->vma;
2563
2564 if (stop_offset > datasize / opb)
2565 stop_offset = datasize / opb;
2566 }
2567
2568 if (start_offset >= stop_offset)
2569 return;
2570
2571 printf (_("Contents of section %s:"), section->name);
2572 if (display_file_offsets)
2573 printf (_(" (Starting at file offset: 0x%lx)"),
2574 (unsigned long) (section->filepos + start_offset));
2575 printf ("\n");
2576
2577 data = xmalloc (datasize);
2578
2579 bfd_get_section_contents (abfd, section, data, 0, datasize);
2580
2581 width = 4;
2582
2583 bfd_sprintf_vma (abfd, buf, start_offset + section->vma);
2584 if (strlen (buf) >= sizeof (buf))
2585 abort ();
2586
2587 count = 0;
2588 while (buf[count] == '0' && buf[count+1] != '\0')
2589 count++;
2590 count = strlen (buf) - count;
2591 if (count > width)
2592 width = count;
2593
2594 bfd_sprintf_vma (abfd, buf, stop_offset + section->vma - 1);
2595 if (strlen (buf) >= sizeof (buf))
2596 abort ();
2597
2598 count = 0;
2599 while (buf[count] == '0' && buf[count+1] != '\0')
2600 count++;
2601 count = strlen (buf) - count;
2602 if (count > width)
2603 width = count;
2604
2605 for (addr_offset = start_offset;
2606 addr_offset < stop_offset; addr_offset += onaline / opb)
2607 {
2608 bfd_size_type j;
2609
2610 bfd_sprintf_vma (abfd, buf, (addr_offset + section->vma));
2611 count = strlen (buf);
2612 if ((size_t) count >= sizeof (buf))
2613 abort ();
2614
2615 putchar (' ');
2616 while (count < width)
2617 {
2618 putchar ('0');
2619 count++;
2620 }
2621 fputs (buf + count - width, stdout);
2622 putchar (' ');
2623
2624 for (j = addr_offset * opb;
2625 j < addr_offset * opb + onaline; j++)
2626 {
2627 if (j < stop_offset * opb)
2628 printf ("%02x", (unsigned) (data[j]));
2629 else
2630 printf (" ");
2631 if ((j & 3) == 3)
2632 printf (" ");
2633 }
2634
2635 printf (" ");
2636 for (j = addr_offset * opb;
2637 j < addr_offset * opb + onaline; j++)
2638 {
2639 if (j >= stop_offset * opb)
2640 printf (" ");
2641 else
2642 printf ("%c", ISPRINT (data[j]) ? data[j] : '.');
2643 }
2644 putchar ('\n');
2645 }
2646 free (data);
2647 }
2648
2649 /* Actually display the various requested regions. */
2650
2651 static void
2652 dump_data (bfd *abfd)
2653 {
2654 bfd_map_over_sections (abfd, dump_section, NULL);
2655 }
2656
2657 /* Should perhaps share code and display with nm? */
2658
2659 static void
2660 dump_symbols (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean dynamic)
2661 {
2662 asymbol **current;
2663 long max;
2664 long count;
2665
2666 if (dynamic)
2667 {
2668 current = dynsyms;
2669 max = dynsymcount;
2670 printf ("DYNAMIC SYMBOL TABLE:\n");
2671 }
2672 else
2673 {
2674 current = syms;
2675 max = symcount;
2676 printf ("SYMBOL TABLE:\n");
2677 }
2678
2679 if (max == 0)
2680 printf (_("no symbols\n"));
2681
2682 for (count = 0; count < max; count++)
2683 {
2684 bfd *cur_bfd;
2685
2686 if (*current == NULL)
2687 printf (_("no information for symbol number %ld\n"), count);
2688
2689 else if ((cur_bfd = bfd_asymbol_bfd (*current)) == NULL)
2690 printf (_("could not determine the type of symbol number %ld\n"),
2691 count);
2692
2693 else if (process_section_p ((* current)->section)
2694 && (dump_special_syms
2695 || !bfd_is_target_special_symbol (cur_bfd, *current)))
2696 {
2697 const char *name = (*current)->name;
2698
2699 if (do_demangle && name != NULL && *name != '\0')
2700 {
2701 char *alloc;
2702
2703 /* If we want to demangle the name, we demangle it
2704 here, and temporarily clobber it while calling
2705 bfd_print_symbol. FIXME: This is a gross hack. */
2706 alloc = bfd_demangle (cur_bfd, name, DMGL_ANSI | DMGL_PARAMS);
2707 if (alloc != NULL)
2708 (*current)->name = alloc;
2709 bfd_print_symbol (cur_bfd, stdout, *current,
2710 bfd_print_symbol_all);
2711 if (alloc != NULL)
2712 {
2713 (*current)->name = name;
2714 free (alloc);
2715 }
2716 }
2717 else
2718 bfd_print_symbol (cur_bfd, stdout, *current,
2719 bfd_print_symbol_all);
2720 printf ("\n");
2721 }
2722
2723 current++;
2724 }
2725 printf ("\n\n");
2726 }
2727 \f
2728 static void
2729 dump_reloc_set (bfd *abfd, asection *sec, arelent **relpp, long relcount)
2730 {
2731 arelent **p;
2732 char *last_filename, *last_functionname;
2733 unsigned int last_line;
2734
2735 /* Get column headers lined up reasonably. */
2736 {
2737 static int width;
2738
2739 if (width == 0)
2740 {
2741 char buf[30];
2742
2743 bfd_sprintf_vma (abfd, buf, (bfd_vma) -1);
2744 width = strlen (buf) - 7;
2745 }
2746 printf ("OFFSET %*s TYPE %*s VALUE \n", width, "", 12, "");
2747 }
2748
2749 last_filename = NULL;
2750 last_functionname = NULL;
2751 last_line = 0;
2752
2753 for (p = relpp; relcount && *p != NULL; p++, relcount--)
2754 {
2755 arelent *q = *p;
2756 const char *filename, *functionname;
2757 unsigned int line;
2758 const char *sym_name;
2759 const char *section_name;
2760
2761 if (start_address != (bfd_vma) -1
2762 && q->address < start_address)
2763 continue;
2764 if (stop_address != (bfd_vma) -1
2765 && q->address > stop_address)
2766 continue;
2767
2768 if (with_line_numbers
2769 && sec != NULL
2770 && bfd_find_nearest_line (abfd, sec, syms, q->address,
2771 &filename, &functionname, &line))
2772 {
2773 if (functionname != NULL
2774 && (last_functionname == NULL
2775 || strcmp (functionname, last_functionname) != 0))
2776 {
2777 printf ("%s():\n", functionname);
2778 if (last_functionname != NULL)
2779 free (last_functionname);
2780 last_functionname = xstrdup (functionname);
2781 }
2782
2783 if (line > 0
2784 && (line != last_line
2785 || (filename != NULL
2786 && last_filename != NULL
2787 && strcmp (filename, last_filename) != 0)))
2788 {
2789 printf ("%s:%u\n", filename == NULL ? "???" : filename, line);
2790 last_line = line;
2791 if (last_filename != NULL)
2792 free (last_filename);
2793 if (filename == NULL)
2794 last_filename = NULL;
2795 else
2796 last_filename = xstrdup (filename);
2797 }
2798 }
2799
2800 if (q->sym_ptr_ptr && *q->sym_ptr_ptr)
2801 {
2802 sym_name = (*(q->sym_ptr_ptr))->name;
2803 section_name = (*(q->sym_ptr_ptr))->section->name;
2804 }
2805 else
2806 {
2807 sym_name = NULL;
2808 section_name = NULL;
2809 }
2810
2811 bfd_printf_vma (abfd, q->address);
2812 if (q->howto == NULL)
2813 printf (" *unknown* ");
2814 else if (q->howto->name)
2815 printf (" %-16s ", q->howto->name);
2816 else
2817 printf (" %-16d ", q->howto->type);
2818
2819 if (sym_name)
2820 {
2821 objdump_print_symname (abfd, NULL, *q->sym_ptr_ptr);
2822 }
2823 else
2824 {
2825 if (section_name == NULL)
2826 section_name = "*unknown*";
2827 printf ("[%s]", section_name);
2828 }
2829
2830 if (q->addend)
2831 {
2832 printf ("+0x");
2833 bfd_printf_vma (abfd, q->addend);
2834 }
2835
2836 printf ("\n");
2837 }
2838 }
2839
2840 static void
2841 dump_relocs_in_section (bfd *abfd,
2842 asection *section,
2843 void *dummy ATTRIBUTE_UNUSED)
2844 {
2845 arelent **relpp;
2846 long relcount;
2847 long relsize;
2848
2849 if ( bfd_is_abs_section (section)
2850 || bfd_is_und_section (section)
2851 || bfd_is_com_section (section)
2852 || (! process_section_p (section))
2853 || ((section->flags & SEC_RELOC) == 0))
2854 return;
2855
2856 relsize = bfd_get_reloc_upper_bound (abfd, section);
2857 if (relsize < 0)
2858 bfd_fatal (bfd_get_filename (abfd));
2859
2860 printf ("RELOCATION RECORDS FOR [%s]:", section->name);
2861
2862 if (relsize == 0)
2863 {
2864 printf (" (none)\n\n");
2865 return;
2866 }
2867
2868 relpp = xmalloc (relsize);
2869 relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
2870
2871 if (relcount < 0)
2872 bfd_fatal (bfd_get_filename (abfd));
2873 else if (relcount == 0)
2874 printf (" (none)\n\n");
2875 else
2876 {
2877 printf ("\n");
2878 dump_reloc_set (abfd, section, relpp, relcount);
2879 printf ("\n\n");
2880 }
2881 free (relpp);
2882 }
2883
2884 static void
2885 dump_relocs (bfd *abfd)
2886 {
2887 bfd_map_over_sections (abfd, dump_relocs_in_section, NULL);
2888 }
2889
2890 static void
2891 dump_dynamic_relocs (bfd *abfd)
2892 {
2893 long relsize;
2894 arelent **relpp;
2895 long relcount;
2896
2897 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2898 if (relsize < 0)
2899 bfd_fatal (bfd_get_filename (abfd));
2900
2901 printf ("DYNAMIC RELOCATION RECORDS");
2902
2903 if (relsize == 0)
2904 printf (" (none)\n\n");
2905 else
2906 {
2907 relpp = xmalloc (relsize);
2908 relcount = bfd_canonicalize_dynamic_reloc (abfd, relpp, dynsyms);
2909
2910 if (relcount < 0)
2911 bfd_fatal (bfd_get_filename (abfd));
2912 else if (relcount == 0)
2913 printf (" (none)\n\n");
2914 else
2915 {
2916 printf ("\n");
2917 dump_reloc_set (abfd, NULL, relpp, relcount);
2918 printf ("\n\n");
2919 }
2920 free (relpp);
2921 }
2922 }
2923
2924 /* Creates a table of paths, to search for source files. */
2925
2926 static void
2927 add_include_path (const char *path)
2928 {
2929 if (path[0] == 0)
2930 return;
2931 include_path_count++;
2932 include_paths = xrealloc (include_paths,
2933 include_path_count * sizeof (*include_paths));
2934 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2935 if (path[1] == ':' && path[2] == 0)
2936 path = concat (path, ".", (const char *) 0);
2937 #endif
2938 include_paths[include_path_count - 1] = path;
2939 }
2940
2941 static void
2942 adjust_addresses (bfd *abfd ATTRIBUTE_UNUSED,
2943 asection *section,
2944 void *arg)
2945 {
2946 if ((section->flags & SEC_DEBUGGING) == 0)
2947 {
2948 bfd_boolean *has_reloc_p = (bfd_boolean *) arg;
2949 section->vma += adjust_section_vma;
2950 if (*has_reloc_p)
2951 section->lma += adjust_section_vma;
2952 }
2953 }
2954
2955 /* Dump selected contents of ABFD. */
2956
2957 static void
2958 dump_bfd (bfd *abfd)
2959 {
2960 /* If we are adjusting section VMA's, change them all now. Changing
2961 the BFD information is a hack. However, we must do it, or
2962 bfd_find_nearest_line will not do the right thing. */
2963 if (adjust_section_vma != 0)
2964 {
2965 bfd_boolean has_reloc = (abfd->flags & HAS_RELOC);
2966 bfd_map_over_sections (abfd, adjust_addresses, &has_reloc);
2967 }
2968
2969 if (! dump_debugging_tags)
2970 printf (_("\n%s: file format %s\n"), bfd_get_filename (abfd),
2971 abfd->xvec->name);
2972 if (dump_ar_hdrs)
2973 print_arelt_descr (stdout, abfd, TRUE);
2974 if (dump_file_header)
2975 dump_bfd_header (abfd);
2976 if (dump_private_headers)
2977 dump_bfd_private_header (abfd);
2978 if (! dump_debugging_tags)
2979 putchar ('\n');
2980 if (dump_section_headers)
2981 dump_headers (abfd);
2982
2983 if (dump_symtab
2984 || dump_reloc_info
2985 || disassemble
2986 || dump_debugging
2987 || dump_dwarf_section_info)
2988 syms = slurp_symtab (abfd);
2989 if (dump_dynamic_symtab || dump_dynamic_reloc_info
2990 || (disassemble && bfd_get_dynamic_symtab_upper_bound (abfd) > 0))
2991 dynsyms = slurp_dynamic_symtab (abfd);
2992 if (disassemble)
2993 {
2994 synthcount = bfd_get_synthetic_symtab (abfd, symcount, syms,
2995 dynsymcount, dynsyms, &synthsyms);
2996 if (synthcount < 0)
2997 synthcount = 0;
2998 }
2999
3000 if (dump_symtab)
3001 dump_symbols (abfd, FALSE);
3002 if (dump_dynamic_symtab)
3003 dump_symbols (abfd, TRUE);
3004 if (dump_dwarf_section_info)
3005 dump_dwarf (abfd);
3006 if (dump_stab_section_info)
3007 dump_stabs (abfd);
3008 if (dump_reloc_info && ! disassemble)
3009 dump_relocs (abfd);
3010 if (dump_dynamic_reloc_info && ! disassemble)
3011 dump_dynamic_relocs (abfd);
3012 if (dump_section_contents)
3013 dump_data (abfd);
3014 if (disassemble)
3015 disassemble_data (abfd);
3016
3017 if (dump_debugging)
3018 {
3019 void *dhandle;
3020
3021 dhandle = read_debugging_info (abfd, syms, symcount, TRUE);
3022 if (dhandle != NULL)
3023 {
3024 if (!print_debugging_info (stdout, dhandle, abfd, syms,
3025 bfd_demangle,
3026 dump_debugging_tags ? TRUE : FALSE))
3027 {
3028 non_fatal (_("%s: printing debugging information failed"),
3029 bfd_get_filename (abfd));
3030 exit_status = 1;
3031 }
3032 }
3033 /* PR 6483: If there was no STABS or IEEE debug
3034 info in the file, try DWARF instead. */
3035 else if (! dump_dwarf_section_info)
3036 {
3037 dump_dwarf (abfd);
3038 }
3039 }
3040
3041 if (syms)
3042 {
3043 free (syms);
3044 syms = NULL;
3045 }
3046
3047 if (dynsyms)
3048 {
3049 free (dynsyms);
3050 dynsyms = NULL;
3051 }
3052
3053 if (synthsyms)
3054 {
3055 free (synthsyms);
3056 synthsyms = NULL;
3057 }
3058
3059 symcount = 0;
3060 dynsymcount = 0;
3061 synthcount = 0;
3062 }
3063
3064 static void
3065 display_bfd (bfd *abfd)
3066 {
3067 char **matching;
3068
3069 if (bfd_check_format_matches (abfd, bfd_object, &matching))
3070 {
3071 dump_bfd (abfd);
3072 return;
3073 }
3074
3075 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3076 {
3077 nonfatal (bfd_get_filename (abfd));
3078 list_matching_formats (matching);
3079 free (matching);
3080 return;
3081 }
3082
3083 if (bfd_get_error () != bfd_error_file_not_recognized)
3084 {
3085 nonfatal (bfd_get_filename (abfd));
3086 return;
3087 }
3088
3089 if (bfd_check_format_matches (abfd, bfd_core, &matching))
3090 {
3091 dump_bfd (abfd);
3092 return;
3093 }
3094
3095 nonfatal (bfd_get_filename (abfd));
3096
3097 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3098 {
3099 list_matching_formats (matching);
3100 free (matching);
3101 }
3102 }
3103
3104 static void
3105 display_file (char *filename, char *target)
3106 {
3107 bfd *file;
3108 bfd *arfile = NULL;
3109
3110 if (get_file_size (filename) < 1)
3111 {
3112 exit_status = 1;
3113 return;
3114 }
3115
3116 file = bfd_openr (filename, target);
3117 if (file == NULL)
3118 {
3119 nonfatal (filename);
3120 return;
3121 }
3122
3123 /* If the file is an archive, process all of its elements. */
3124 if (bfd_check_format (file, bfd_archive))
3125 {
3126 bfd *last_arfile = NULL;
3127
3128 printf (_("In archive %s:\n"), bfd_get_filename (file));
3129 for (;;)
3130 {
3131 bfd_set_error (bfd_error_no_error);
3132
3133 arfile = bfd_openr_next_archived_file (file, arfile);
3134 if (arfile == NULL)
3135 {
3136 if (bfd_get_error () != bfd_error_no_more_archived_files)
3137 nonfatal (bfd_get_filename (file));
3138 break;
3139 }
3140
3141 display_bfd (arfile);
3142
3143 if (last_arfile != NULL)
3144 bfd_close (last_arfile);
3145 last_arfile = arfile;
3146 }
3147
3148 if (last_arfile != NULL)
3149 bfd_close (last_arfile);
3150 }
3151 else
3152 display_bfd (file);
3153
3154 bfd_close (file);
3155 }
3156 \f
3157 int
3158 main (int argc, char **argv)
3159 {
3160 int c;
3161 char *target = default_target;
3162 bfd_boolean seenflag = FALSE;
3163
3164 #if defined (HAVE_SETLOCALE)
3165 #if defined (HAVE_LC_MESSAGES)
3166 setlocale (LC_MESSAGES, "");
3167 #endif
3168 setlocale (LC_CTYPE, "");
3169 #endif
3170
3171 bindtextdomain (PACKAGE, LOCALEDIR);
3172 textdomain (PACKAGE);
3173
3174 program_name = *argv;
3175 xmalloc_set_program_name (program_name);
3176
3177 START_PROGRESS (program_name, 0);
3178
3179 expandargv (&argc, &argv);
3180
3181 bfd_init ();
3182 set_default_bfd_target ();
3183
3184 while ((c = getopt_long (argc, argv,
3185 "pib:m:M:VvCdDlfFaHhrRtTxsSI:j:wE:zgeGW::",
3186 long_options, (int *) 0))
3187 != EOF)
3188 {
3189 switch (c)
3190 {
3191 case 0:
3192 break; /* We've been given a long option. */
3193 case 'm':
3194 machine = optarg;
3195 break;
3196 case 'M':
3197 if (disassembler_options)
3198 /* Ignore potential memory leak for now. */
3199 disassembler_options = concat (disassembler_options, ",",
3200 optarg, (const char *) NULL);
3201 else
3202 disassembler_options = optarg;
3203 break;
3204 case 'j':
3205 if (only_used == only_size)
3206 {
3207 only_size += 8;
3208 only = xrealloc (only, only_size * sizeof (char *));
3209 }
3210 only [only_used++] = optarg;
3211 break;
3212 case 'F':
3213 display_file_offsets = TRUE;
3214 break;
3215 case 'l':
3216 with_line_numbers = TRUE;
3217 break;
3218 case 'b':
3219 target = optarg;
3220 break;
3221 case 'C':
3222 do_demangle = TRUE;
3223 if (optarg != NULL)
3224 {
3225 enum demangling_styles style;
3226
3227 style = cplus_demangle_name_to_style (optarg);
3228 if (style == unknown_demangling)
3229 fatal (_("unknown demangling style `%s'"),
3230 optarg);
3231
3232 cplus_demangle_set_style (style);
3233 }
3234 break;
3235 case 'w':
3236 wide_output = TRUE;
3237 break;
3238 case OPTION_ADJUST_VMA:
3239 adjust_section_vma = parse_vma (optarg, "--adjust-vma");
3240 break;
3241 case OPTION_START_ADDRESS:
3242 start_address = parse_vma (optarg, "--start-address");
3243 if ((stop_address != (bfd_vma) -1) && stop_address <= start_address)
3244 fatal (_("error: the start address should be before the end address"));
3245 break;
3246 case OPTION_STOP_ADDRESS:
3247 stop_address = parse_vma (optarg, "--stop-address");
3248 if ((start_address != (bfd_vma) -1) && stop_address <= start_address)
3249 fatal (_("error: the stop address should be after the start address"));
3250 break;
3251 case OPTION_PREFIX:
3252 prefix = optarg;
3253 prefix_length = strlen (prefix);
3254 /* Remove an unnecessary trailing '/' */
3255 while (IS_DIR_SEPARATOR (prefix[prefix_length - 1]))
3256 prefix_length--;
3257 break;
3258 case OPTION_PREFIX_STRIP:
3259 prefix_strip = atoi (optarg);
3260 if (prefix_strip < 0)
3261 fatal (_("error: prefix strip must be non-negative"));
3262 break;
3263 case OPTION_INSN_WIDTH:
3264 insn_width = strtoul (optarg, NULL, 0);
3265 if (insn_width <= 0)
3266 fatal (_("error: instruction width must be positive"));
3267 break;
3268 case 'E':
3269 if (strcmp (optarg, "B") == 0)
3270 endian = BFD_ENDIAN_BIG;
3271 else if (strcmp (optarg, "L") == 0)
3272 endian = BFD_ENDIAN_LITTLE;
3273 else
3274 {
3275 non_fatal (_("unrecognized -E option"));
3276 usage (stderr, 1);
3277 }
3278 break;
3279 case OPTION_ENDIAN:
3280 if (strncmp (optarg, "big", strlen (optarg)) == 0)
3281 endian = BFD_ENDIAN_BIG;
3282 else if (strncmp (optarg, "little", strlen (optarg)) == 0)
3283 endian = BFD_ENDIAN_LITTLE;
3284 else
3285 {
3286 non_fatal (_("unrecognized --endian type `%s'"), optarg);
3287 usage (stderr, 1);
3288 }
3289 break;
3290
3291 case 'f':
3292 dump_file_header = TRUE;
3293 seenflag = TRUE;
3294 break;
3295 case 'i':
3296 formats_info = TRUE;
3297 seenflag = TRUE;
3298 break;
3299 case 'I':
3300 add_include_path (optarg);
3301 break;
3302 case 'p':
3303 dump_private_headers = TRUE;
3304 seenflag = TRUE;
3305 break;
3306 case 'x':
3307 dump_private_headers = TRUE;
3308 dump_symtab = TRUE;
3309 dump_reloc_info = TRUE;
3310 dump_file_header = TRUE;
3311 dump_ar_hdrs = TRUE;
3312 dump_section_headers = TRUE;
3313 seenflag = TRUE;
3314 break;
3315 case 't':
3316 dump_symtab = TRUE;
3317 seenflag = TRUE;
3318 break;
3319 case 'T':
3320 dump_dynamic_symtab = TRUE;
3321 seenflag = TRUE;
3322 break;
3323 case 'd':
3324 disassemble = TRUE;
3325 seenflag = TRUE;
3326 break;
3327 case 'z':
3328 disassemble_zeroes = TRUE;
3329 break;
3330 case 'D':
3331 disassemble = TRUE;
3332 disassemble_all = TRUE;
3333 seenflag = TRUE;
3334 break;
3335 case 'S':
3336 disassemble = TRUE;
3337 with_source_code = TRUE;
3338 seenflag = TRUE;
3339 break;
3340 case 'g':
3341 dump_debugging = 1;
3342 seenflag = TRUE;
3343 break;
3344 case 'e':
3345 dump_debugging = 1;
3346 dump_debugging_tags = 1;
3347 do_demangle = TRUE;
3348 seenflag = TRUE;
3349 break;
3350 case 'W':
3351 dump_dwarf_section_info = TRUE;
3352 seenflag = TRUE;
3353 if (optarg)
3354 dwarf_select_sections_by_letters (optarg);
3355 else
3356 dwarf_select_sections_all ();
3357 break;
3358 case OPTION_DWARF:
3359 dump_dwarf_section_info = TRUE;
3360 seenflag = TRUE;
3361 if (optarg)
3362 dwarf_select_sections_by_names (optarg);
3363 else
3364 dwarf_select_sections_all ();
3365 break;
3366 case 'G':
3367 dump_stab_section_info = TRUE;
3368 seenflag = TRUE;
3369 break;
3370 case 's':
3371 dump_section_contents = TRUE;
3372 seenflag = TRUE;
3373 break;
3374 case 'r':
3375 dump_reloc_info = TRUE;
3376 seenflag = TRUE;
3377 break;
3378 case 'R':
3379 dump_dynamic_reloc_info = TRUE;
3380 seenflag = TRUE;
3381 break;
3382 case 'a':
3383 dump_ar_hdrs = TRUE;
3384 seenflag = TRUE;
3385 break;
3386 case 'h':
3387 dump_section_headers = TRUE;
3388 seenflag = TRUE;
3389 break;
3390 case 'H':
3391 usage (stdout, 0);
3392 seenflag = TRUE;
3393 case 'v':
3394 case 'V':
3395 show_version = TRUE;
3396 seenflag = TRUE;
3397 break;
3398
3399 default:
3400 usage (stderr, 1);
3401 }
3402 }
3403
3404 if (show_version)
3405 print_version ("objdump");
3406
3407 if (!seenflag)
3408 usage (stderr, 2);
3409
3410 if (formats_info)
3411 exit_status = display_info ();
3412 else
3413 {
3414 if (optind == argc)
3415 display_file ("a.out", target);
3416 else
3417 for (; optind < argc;)
3418 display_file (argv[optind++], target);
3419 }
3420
3421 END_PROGRESS (program_name);
3422
3423 return exit_status;
3424 }
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