0334d70dfe177b6d24c9bfecb0adfe46dbe0c946
[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[lLiaprmfFsoRt] or\n\
204 --dwarf[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,\n\
205 =frames-interp,=str,=loc,=Ranges,=pubtypes]\n\
206 Display DWARF info in the file\n\
207 -t, --syms Display the contents of the symbol table(s)\n\
208 -T, --dynamic-syms Display the contents of the dynamic symbol table\n\
209 -r, --reloc Display the relocation entries in the file\n\
210 -R, --dynamic-reloc Display the dynamic relocation entries in the file\n\
211 @<file> Read options from <file>\n\
212 -v, --version Display this program's version number\n\
213 -i, --info List object formats and architectures supported\n\
214 -H, --help Display this information\n\
215 "));
216 if (status != 2)
217 {
218 fprintf (stream, _("\n The following switches are optional:\n"));
219 fprintf (stream, _("\
220 -b, --target=BFDNAME Specify the target object format as BFDNAME\n\
221 -m, --architecture=MACHINE Specify the target architecture as MACHINE\n\
222 -j, --section=NAME Only display information for section NAME\n\
223 -M, --disassembler-options=OPT Pass text OPT on to the disassembler\n\
224 -EB --endian=big Assume big endian format when disassembling\n\
225 -EL --endian=little Assume little endian format when disassembling\n\
226 --file-start-context Include context from start of file (with -S)\n\
227 -I, --include=DIR Add DIR to search list for source files\n\
228 -l, --line-numbers Include line numbers and filenames in output\n\
229 -F, --file-offsets Include file offsets when displaying information\n\
230 -C, --demangle[=STYLE] Decode mangled/processed symbol names\n\
231 The STYLE, if specified, can be `auto', `gnu',\n\
232 `lucid', `arm', `hp', `edg', `gnu-v3', `java'\n\
233 or `gnat'\n\
234 -w, --wide Format output for more than 80 columns\n\
235 -z, --disassemble-zeroes Do not skip blocks of zeroes when disassembling\n\
236 --start-address=ADDR Only process data whose address is >= ADDR\n\
237 --stop-address=ADDR Only process data whose address is <= ADDR\n\
238 --prefix-addresses Print complete address alongside disassembly\n\
239 --[no-]show-raw-insn Display hex alongside symbolic disassembly\n\
240 --insn-width=WIDTH Display WIDTH bytes on a signle line for -d\n\
241 --adjust-vma=OFFSET Add OFFSET to all displayed section addresses\n\
242 --special-syms Include special symbols in symbol dumps\n\
243 --prefix=PREFIX Add PREFIX to absolute paths for -S\n\
244 --prefix-strip=LEVEL Strip initial directory names for -S\n\
245 \n"));
246 list_supported_targets (program_name, stream);
247 list_supported_architectures (program_name, stream);
248
249 disassembler_usage (stream);
250 }
251 if (REPORT_BUGS_TO[0] && status == 0)
252 fprintf (stream, _("Report bugs to %s.\n"), REPORT_BUGS_TO);
253 exit (status);
254 }
255
256 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
257 enum option_values
258 {
259 OPTION_ENDIAN=150,
260 OPTION_START_ADDRESS,
261 OPTION_STOP_ADDRESS,
262 OPTION_DWARF,
263 OPTION_PREFIX,
264 OPTION_PREFIX_STRIP,
265 OPTION_INSN_WIDTH,
266 OPTION_ADJUST_VMA
267 };
268
269 static struct option long_options[]=
270 {
271 {"adjust-vma", required_argument, NULL, OPTION_ADJUST_VMA},
272 {"all-headers", no_argument, NULL, 'x'},
273 {"private-headers", no_argument, NULL, 'p'},
274 {"architecture", required_argument, NULL, 'm'},
275 {"archive-headers", no_argument, NULL, 'a'},
276 {"debugging", no_argument, NULL, 'g'},
277 {"debugging-tags", no_argument, NULL, 'e'},
278 {"demangle", optional_argument, NULL, 'C'},
279 {"disassemble", no_argument, NULL, 'd'},
280 {"disassemble-all", no_argument, NULL, 'D'},
281 {"disassembler-options", required_argument, NULL, 'M'},
282 {"disassemble-zeroes", no_argument, NULL, 'z'},
283 {"dynamic-reloc", no_argument, NULL, 'R'},
284 {"dynamic-syms", no_argument, NULL, 'T'},
285 {"endian", required_argument, NULL, OPTION_ENDIAN},
286 {"file-headers", no_argument, NULL, 'f'},
287 {"file-offsets", no_argument, NULL, 'F'},
288 {"file-start-context", no_argument, &file_start_context, 1},
289 {"full-contents", no_argument, NULL, 's'},
290 {"headers", no_argument, NULL, 'h'},
291 {"help", no_argument, NULL, 'H'},
292 {"info", no_argument, NULL, 'i'},
293 {"line-numbers", no_argument, NULL, 'l'},
294 {"no-show-raw-insn", no_argument, &show_raw_insn, -1},
295 {"prefix-addresses", no_argument, &prefix_addresses, 1},
296 {"reloc", no_argument, NULL, 'r'},
297 {"section", required_argument, NULL, 'j'},
298 {"section-headers", no_argument, NULL, 'h'},
299 {"show-raw-insn", no_argument, &show_raw_insn, 1},
300 {"source", no_argument, NULL, 'S'},
301 {"special-syms", no_argument, &dump_special_syms, 1},
302 {"include", required_argument, NULL, 'I'},
303 {"dwarf", optional_argument, NULL, OPTION_DWARF},
304 {"stabs", no_argument, NULL, 'G'},
305 {"start-address", required_argument, NULL, OPTION_START_ADDRESS},
306 {"stop-address", required_argument, NULL, OPTION_STOP_ADDRESS},
307 {"syms", no_argument, NULL, 't'},
308 {"target", required_argument, NULL, 'b'},
309 {"version", no_argument, NULL, 'V'},
310 {"wide", no_argument, NULL, 'w'},
311 {"prefix", required_argument, NULL, OPTION_PREFIX},
312 {"prefix-strip", required_argument, NULL, OPTION_PREFIX_STRIP},
313 {"insn-width", required_argument, NULL, OPTION_INSN_WIDTH},
314 {0, no_argument, 0, 0}
315 };
316 \f
317 static void
318 nonfatal (const char *msg)
319 {
320 bfd_nonfatal (msg);
321 exit_status = 1;
322 }
323 \f
324 /* Returns TRUE if the specified section should be dumped. */
325
326 static bfd_boolean
327 process_section_p (asection * section)
328 {
329 size_t i;
330
331 if (only == NULL)
332 return TRUE;
333
334 for (i = 0; i < only_used; i++)
335 if (strcmp (only [i], section->name) == 0)
336 return TRUE;
337
338 return FALSE;
339 }
340 \f
341 static void
342 dump_section_header (bfd *abfd, asection *section,
343 void *ignored ATTRIBUTE_UNUSED)
344 {
345 char *comma = "";
346 unsigned int opb = bfd_octets_per_byte (abfd);
347
348 /* Ignore linker created section. See elfNN_ia64_object_p in
349 bfd/elfxx-ia64.c. */
350 if (section->flags & SEC_LINKER_CREATED)
351 return;
352
353 /* PR 10413: Skip sections that we are ignoring. */
354 if (! process_section_p (section))
355 return;
356
357 printf ("%3d %-13s %08lx ", section->index,
358 bfd_get_section_name (abfd, section),
359 (unsigned long) bfd_section_size (abfd, section) / opb);
360 bfd_printf_vma (abfd, bfd_get_section_vma (abfd, section));
361 printf (" ");
362 bfd_printf_vma (abfd, section->lma);
363 printf (" %08lx 2**%u", (unsigned long) section->filepos,
364 bfd_get_section_alignment (abfd, section));
365 if (! wide_output)
366 printf ("\n ");
367 printf (" ");
368
369 #define PF(x, y) \
370 if (section->flags & x) { printf ("%s%s", comma, y); comma = ", "; }
371
372 PF (SEC_HAS_CONTENTS, "CONTENTS");
373 PF (SEC_ALLOC, "ALLOC");
374 PF (SEC_CONSTRUCTOR, "CONSTRUCTOR");
375 PF (SEC_LOAD, "LOAD");
376 PF (SEC_RELOC, "RELOC");
377 PF (SEC_READONLY, "READONLY");
378 PF (SEC_CODE, "CODE");
379 PF (SEC_DATA, "DATA");
380 PF (SEC_ROM, "ROM");
381 PF (SEC_DEBUGGING, "DEBUGGING");
382 PF (SEC_NEVER_LOAD, "NEVER_LOAD");
383 PF (SEC_EXCLUDE, "EXCLUDE");
384 PF (SEC_SORT_ENTRIES, "SORT_ENTRIES");
385 if (bfd_get_arch (abfd) == bfd_arch_tic54x)
386 {
387 PF (SEC_TIC54X_BLOCK, "BLOCK");
388 PF (SEC_TIC54X_CLINK, "CLINK");
389 }
390 PF (SEC_SMALL_DATA, "SMALL_DATA");
391 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
392 PF (SEC_COFF_SHARED, "SHARED");
393 PF (SEC_THREAD_LOCAL, "THREAD_LOCAL");
394 PF (SEC_GROUP, "GROUP");
395
396 if ((section->flags & SEC_LINK_ONCE) != 0)
397 {
398 const char *ls;
399 struct coff_comdat_info *comdat;
400
401 switch (section->flags & SEC_LINK_DUPLICATES)
402 {
403 default:
404 abort ();
405 case SEC_LINK_DUPLICATES_DISCARD:
406 ls = "LINK_ONCE_DISCARD";
407 break;
408 case SEC_LINK_DUPLICATES_ONE_ONLY:
409 ls = "LINK_ONCE_ONE_ONLY";
410 break;
411 case SEC_LINK_DUPLICATES_SAME_SIZE:
412 ls = "LINK_ONCE_SAME_SIZE";
413 break;
414 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
415 ls = "LINK_ONCE_SAME_CONTENTS";
416 break;
417 }
418 printf ("%s%s", comma, ls);
419
420 comdat = bfd_coff_get_comdat_section (abfd, section);
421 if (comdat != NULL)
422 printf (" (COMDAT %s %ld)", comdat->name, comdat->symbol);
423
424 comma = ", ";
425 }
426
427 printf ("\n");
428 #undef PF
429 }
430
431 static void
432 dump_headers (bfd *abfd)
433 {
434 printf (_("Sections:\n"));
435
436 #ifndef BFD64
437 printf (_("Idx Name Size VMA LMA File off Algn"));
438 #else
439 /* With BFD64, non-ELF returns -1 and wants always 64 bit addresses. */
440 if (bfd_get_arch_size (abfd) == 32)
441 printf (_("Idx Name Size VMA LMA File off Algn"));
442 else
443 printf (_("Idx Name Size VMA LMA File off Algn"));
444 #endif
445
446 if (wide_output)
447 printf (_(" Flags"));
448 if (abfd->flags & HAS_LOAD_PAGE)
449 printf (_(" Pg"));
450 printf ("\n");
451
452 bfd_map_over_sections (abfd, dump_section_header, NULL);
453 }
454 \f
455 static asymbol **
456 slurp_symtab (bfd *abfd)
457 {
458 asymbol **sy = NULL;
459 long storage;
460
461 if (!(bfd_get_file_flags (abfd) & HAS_SYMS))
462 {
463 symcount = 0;
464 return NULL;
465 }
466
467 storage = bfd_get_symtab_upper_bound (abfd);
468 if (storage < 0)
469 bfd_fatal (bfd_get_filename (abfd));
470 if (storage)
471 sy = (asymbol **) xmalloc (storage);
472
473 symcount = bfd_canonicalize_symtab (abfd, sy);
474 if (symcount < 0)
475 bfd_fatal (bfd_get_filename (abfd));
476 return sy;
477 }
478
479 /* Read in the dynamic symbols. */
480
481 static asymbol **
482 slurp_dynamic_symtab (bfd *abfd)
483 {
484 asymbol **sy = NULL;
485 long storage;
486
487 storage = bfd_get_dynamic_symtab_upper_bound (abfd);
488 if (storage < 0)
489 {
490 if (!(bfd_get_file_flags (abfd) & DYNAMIC))
491 {
492 non_fatal (_("%s: not a dynamic object"), bfd_get_filename (abfd));
493 dynsymcount = 0;
494 return NULL;
495 }
496
497 bfd_fatal (bfd_get_filename (abfd));
498 }
499 if (storage)
500 sy = (asymbol **) xmalloc (storage);
501
502 dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, sy);
503 if (dynsymcount < 0)
504 bfd_fatal (bfd_get_filename (abfd));
505 return sy;
506 }
507
508 /* Filter out (in place) symbols that are useless for disassembly.
509 COUNT is the number of elements in SYMBOLS.
510 Return the number of useful symbols. */
511
512 static long
513 remove_useless_symbols (asymbol **symbols, long count)
514 {
515 asymbol **in_ptr = symbols, **out_ptr = symbols;
516
517 while (--count >= 0)
518 {
519 asymbol *sym = *in_ptr++;
520
521 if (sym->name == NULL || sym->name[0] == '\0')
522 continue;
523 if (sym->flags & (BSF_DEBUGGING | BSF_SECTION_SYM))
524 continue;
525 if (bfd_is_und_section (sym->section)
526 || bfd_is_com_section (sym->section))
527 continue;
528
529 *out_ptr++ = sym;
530 }
531 return out_ptr - symbols;
532 }
533
534 /* Sort symbols into value order. */
535
536 static int
537 compare_symbols (const void *ap, const void *bp)
538 {
539 const asymbol *a = * (const asymbol **) ap;
540 const asymbol *b = * (const asymbol **) bp;
541 const char *an;
542 const char *bn;
543 size_t anl;
544 size_t bnl;
545 bfd_boolean af;
546 bfd_boolean bf;
547 flagword aflags;
548 flagword bflags;
549
550 if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
551 return 1;
552 else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
553 return -1;
554
555 if (a->section > b->section)
556 return 1;
557 else if (a->section < b->section)
558 return -1;
559
560 an = bfd_asymbol_name (a);
561 bn = bfd_asymbol_name (b);
562 anl = strlen (an);
563 bnl = strlen (bn);
564
565 /* The symbols gnu_compiled and gcc2_compiled convey no real
566 information, so put them after other symbols with the same value. */
567 af = (strstr (an, "gnu_compiled") != NULL
568 || strstr (an, "gcc2_compiled") != NULL);
569 bf = (strstr (bn, "gnu_compiled") != NULL
570 || strstr (bn, "gcc2_compiled") != NULL);
571
572 if (af && ! bf)
573 return 1;
574 if (! af && bf)
575 return -1;
576
577 /* We use a heuristic for the file name, to try to sort it after
578 more useful symbols. It may not work on non Unix systems, but it
579 doesn't really matter; the only difference is precisely which
580 symbol names get printed. */
581
582 #define file_symbol(s, sn, snl) \
583 (((s)->flags & BSF_FILE) != 0 \
584 || ((sn)[(snl) - 2] == '.' \
585 && ((sn)[(snl) - 1] == 'o' \
586 || (sn)[(snl) - 1] == 'a')))
587
588 af = file_symbol (a, an, anl);
589 bf = file_symbol (b, bn, bnl);
590
591 if (af && ! bf)
592 return 1;
593 if (! af && bf)
594 return -1;
595
596 /* Try to sort global symbols before local symbols before function
597 symbols before debugging symbols. */
598
599 aflags = a->flags;
600 bflags = b->flags;
601
602 if ((aflags & BSF_DEBUGGING) != (bflags & BSF_DEBUGGING))
603 {
604 if ((aflags & BSF_DEBUGGING) != 0)
605 return 1;
606 else
607 return -1;
608 }
609 if ((aflags & BSF_FUNCTION) != (bflags & BSF_FUNCTION))
610 {
611 if ((aflags & BSF_FUNCTION) != 0)
612 return -1;
613 else
614 return 1;
615 }
616 if ((aflags & BSF_LOCAL) != (bflags & BSF_LOCAL))
617 {
618 if ((aflags & BSF_LOCAL) != 0)
619 return 1;
620 else
621 return -1;
622 }
623 if ((aflags & BSF_GLOBAL) != (bflags & BSF_GLOBAL))
624 {
625 if ((aflags & BSF_GLOBAL) != 0)
626 return -1;
627 else
628 return 1;
629 }
630
631 /* Symbols that start with '.' might be section names, so sort them
632 after symbols that don't start with '.'. */
633 if (an[0] == '.' && bn[0] != '.')
634 return 1;
635 if (an[0] != '.' && bn[0] == '.')
636 return -1;
637
638 /* Finally, if we can't distinguish them in any other way, try to
639 get consistent results by sorting the symbols by name. */
640 return strcmp (an, bn);
641 }
642
643 /* Sort relocs into address order. */
644
645 static int
646 compare_relocs (const void *ap, const void *bp)
647 {
648 const arelent *a = * (const arelent **) ap;
649 const arelent *b = * (const arelent **) bp;
650
651 if (a->address > b->address)
652 return 1;
653 else if (a->address < b->address)
654 return -1;
655
656 /* So that associated relocations tied to the same address show up
657 in the correct order, we don't do any further sorting. */
658 if (a > b)
659 return 1;
660 else if (a < b)
661 return -1;
662 else
663 return 0;
664 }
665
666 /* Print an address (VMA) to the output stream in INFO.
667 If SKIP_ZEROES is TRUE, omit leading zeroes. */
668
669 static void
670 objdump_print_value (bfd_vma vma, struct disassemble_info *inf,
671 bfd_boolean skip_zeroes)
672 {
673 char buf[30];
674 char *p;
675 struct objdump_disasm_info *aux;
676
677 aux = (struct objdump_disasm_info *) inf->application_data;
678 bfd_sprintf_vma (aux->abfd, buf, vma);
679 if (! skip_zeroes)
680 p = buf;
681 else
682 {
683 for (p = buf; *p == '0'; ++p)
684 ;
685 if (*p == '\0')
686 --p;
687 }
688 (*inf->fprintf_func) (inf->stream, "%s", p);
689 }
690
691 /* Print the name of a symbol. */
692
693 static void
694 objdump_print_symname (bfd *abfd, struct disassemble_info *inf,
695 asymbol *sym)
696 {
697 char *alloc;
698 const char *name;
699
700 alloc = NULL;
701 name = bfd_asymbol_name (sym);
702 if (do_demangle && name[0] != '\0')
703 {
704 /* Demangle the name. */
705 alloc = bfd_demangle (abfd, name, DMGL_ANSI | DMGL_PARAMS);
706 if (alloc != NULL)
707 name = alloc;
708 }
709
710 if (inf != NULL)
711 (*inf->fprintf_func) (inf->stream, "%s", name);
712 else
713 printf ("%s", name);
714
715 if (alloc != NULL)
716 free (alloc);
717 }
718
719 /* Locate a symbol given a bfd and a section (from INFO->application_data),
720 and a VMA. If INFO->application_data->require_sec is TRUE, then always
721 require the symbol to be in the section. Returns NULL if there is no
722 suitable symbol. If PLACE is not NULL, then *PLACE is set to the index
723 of the symbol in sorted_syms. */
724
725 static asymbol *
726 find_symbol_for_address (bfd_vma vma,
727 struct disassemble_info *inf,
728 long *place)
729 {
730 /* @@ Would it speed things up to cache the last two symbols returned,
731 and maybe their address ranges? For many processors, only one memory
732 operand can be present at a time, so the 2-entry cache wouldn't be
733 constantly churned by code doing heavy memory accesses. */
734
735 /* Indices in `sorted_syms'. */
736 long min = 0;
737 long max_count = sorted_symcount;
738 long thisplace;
739 struct objdump_disasm_info *aux;
740 bfd *abfd;
741 asection *sec;
742 unsigned int opb;
743 bfd_boolean want_section;
744
745 if (sorted_symcount < 1)
746 return NULL;
747
748 aux = (struct objdump_disasm_info *) inf->application_data;
749 abfd = aux->abfd;
750 sec = aux->sec;
751 opb = inf->octets_per_byte;
752
753 /* Perform a binary search looking for the closest symbol to the
754 required value. We are searching the range (min, max_count]. */
755 while (min + 1 < max_count)
756 {
757 asymbol *sym;
758
759 thisplace = (max_count + min) / 2;
760 sym = sorted_syms[thisplace];
761
762 if (bfd_asymbol_value (sym) > vma)
763 max_count = thisplace;
764 else if (bfd_asymbol_value (sym) < vma)
765 min = thisplace;
766 else
767 {
768 min = thisplace;
769 break;
770 }
771 }
772
773 /* The symbol we want is now in min, the low end of the range we
774 were searching. If there are several symbols with the same
775 value, we want the first one. */
776 thisplace = min;
777 while (thisplace > 0
778 && (bfd_asymbol_value (sorted_syms[thisplace])
779 == bfd_asymbol_value (sorted_syms[thisplace - 1])))
780 --thisplace;
781
782 /* Prefer a symbol in the current section if we have multple symbols
783 with the same value, as can occur with overlays or zero size
784 sections. */
785 min = thisplace;
786 while (min < max_count
787 && (bfd_asymbol_value (sorted_syms[min])
788 == bfd_asymbol_value (sorted_syms[thisplace])))
789 {
790 if (sorted_syms[min]->section == sec
791 && inf->symbol_is_valid (sorted_syms[min], inf))
792 {
793 thisplace = min;
794
795 if (place != NULL)
796 *place = thisplace;
797
798 return sorted_syms[thisplace];
799 }
800 ++min;
801 }
802
803 /* If the file is relocatable, and the symbol could be from this
804 section, prefer a symbol from this section over symbols from
805 others, even if the other symbol's value might be closer.
806
807 Note that this may be wrong for some symbol references if the
808 sections have overlapping memory ranges, but in that case there's
809 no way to tell what's desired without looking at the relocation
810 table.
811
812 Also give the target a chance to reject symbols. */
813 want_section = (aux->require_sec
814 || ((abfd->flags & HAS_RELOC) != 0
815 && vma >= bfd_get_section_vma (abfd, sec)
816 && vma < (bfd_get_section_vma (abfd, sec)
817 + bfd_section_size (abfd, sec) / opb)));
818 if ((sorted_syms[thisplace]->section != sec && want_section)
819 || ! inf->symbol_is_valid (sorted_syms[thisplace], inf))
820 {
821 long i;
822 long newplace = sorted_symcount;
823
824 for (i = min - 1; i >= 0; i--)
825 {
826 if ((sorted_syms[i]->section == sec || !want_section)
827 && inf->symbol_is_valid (sorted_syms[i], inf))
828 {
829 if (newplace == sorted_symcount)
830 newplace = i;
831
832 if (bfd_asymbol_value (sorted_syms[i])
833 != bfd_asymbol_value (sorted_syms[newplace]))
834 break;
835
836 /* Remember this symbol and keep searching until we reach
837 an earlier address. */
838 newplace = i;
839 }
840 }
841
842 if (newplace != sorted_symcount)
843 thisplace = newplace;
844 else
845 {
846 /* We didn't find a good symbol with a smaller value.
847 Look for one with a larger value. */
848 for (i = thisplace + 1; i < sorted_symcount; i++)
849 {
850 if ((sorted_syms[i]->section == sec || !want_section)
851 && inf->symbol_is_valid (sorted_syms[i], inf))
852 {
853 thisplace = i;
854 break;
855 }
856 }
857 }
858
859 if ((sorted_syms[thisplace]->section != sec && want_section)
860 || ! inf->symbol_is_valid (sorted_syms[thisplace], inf))
861 /* There is no suitable symbol. */
862 return NULL;
863 }
864
865 if (place != NULL)
866 *place = thisplace;
867
868 return sorted_syms[thisplace];
869 }
870
871 /* Print an address and the offset to the nearest symbol. */
872
873 static void
874 objdump_print_addr_with_sym (bfd *abfd, asection *sec, asymbol *sym,
875 bfd_vma vma, struct disassemble_info *inf,
876 bfd_boolean skip_zeroes)
877 {
878 objdump_print_value (vma, inf, skip_zeroes);
879
880 if (sym == NULL)
881 {
882 bfd_vma secaddr;
883
884 (*inf->fprintf_func) (inf->stream, " <%s",
885 bfd_get_section_name (abfd, sec));
886 secaddr = bfd_get_section_vma (abfd, sec);
887 if (vma < secaddr)
888 {
889 (*inf->fprintf_func) (inf->stream, "-0x");
890 objdump_print_value (secaddr - vma, inf, TRUE);
891 }
892 else if (vma > secaddr)
893 {
894 (*inf->fprintf_func) (inf->stream, "+0x");
895 objdump_print_value (vma - secaddr, inf, TRUE);
896 }
897 (*inf->fprintf_func) (inf->stream, ">");
898 }
899 else
900 {
901 (*inf->fprintf_func) (inf->stream, " <");
902 objdump_print_symname (abfd, inf, sym);
903 if (bfd_asymbol_value (sym) > vma)
904 {
905 (*inf->fprintf_func) (inf->stream, "-0x");
906 objdump_print_value (bfd_asymbol_value (sym) - vma, inf, TRUE);
907 }
908 else if (vma > bfd_asymbol_value (sym))
909 {
910 (*inf->fprintf_func) (inf->stream, "+0x");
911 objdump_print_value (vma - bfd_asymbol_value (sym), inf, TRUE);
912 }
913 (*inf->fprintf_func) (inf->stream, ">");
914 }
915
916 if (display_file_offsets)
917 inf->fprintf_func (inf->stream, _(" (File Offset: 0x%lx)"),
918 (long int)(sec->filepos + (vma - sec->vma)));
919 }
920
921 /* Print an address (VMA), symbolically if possible.
922 If SKIP_ZEROES is TRUE, don't output leading zeroes. */
923
924 static void
925 objdump_print_addr (bfd_vma vma,
926 struct disassemble_info *inf,
927 bfd_boolean skip_zeroes)
928 {
929 struct objdump_disasm_info *aux;
930 asymbol *sym = NULL;
931 bfd_boolean skip_find = FALSE;
932
933 aux = (struct objdump_disasm_info *) inf->application_data;
934
935 if (sorted_symcount < 1)
936 {
937 (*inf->fprintf_func) (inf->stream, "0x");
938 objdump_print_value (vma, inf, skip_zeroes);
939
940 if (display_file_offsets)
941 inf->fprintf_func (inf->stream, _(" (File Offset: 0x%lx)"),
942 (long int)(aux->sec->filepos + (vma - aux->sec->vma)));
943 return;
944 }
945
946 if (aux->reloc != NULL
947 && aux->reloc->sym_ptr_ptr != NULL
948 && * aux->reloc->sym_ptr_ptr != NULL)
949 {
950 sym = * aux->reloc->sym_ptr_ptr;
951
952 /* Adjust the vma to the reloc. */
953 vma += bfd_asymbol_value (sym);
954
955 if (bfd_is_und_section (bfd_get_section (sym)))
956 skip_find = TRUE;
957 }
958
959 if (!skip_find)
960 sym = find_symbol_for_address (vma, inf, NULL);
961
962 objdump_print_addr_with_sym (aux->abfd, aux->sec, sym, vma, inf,
963 skip_zeroes);
964 }
965
966 /* Print VMA to INFO. This function is passed to the disassembler
967 routine. */
968
969 static void
970 objdump_print_address (bfd_vma vma, struct disassemble_info *inf)
971 {
972 objdump_print_addr (vma, inf, ! prefix_addresses);
973 }
974
975 /* Determine if the given address has a symbol associated with it. */
976
977 static int
978 objdump_symbol_at_address (bfd_vma vma, struct disassemble_info * inf)
979 {
980 asymbol * sym;
981
982 sym = find_symbol_for_address (vma, inf, NULL);
983
984 return (sym != NULL && (bfd_asymbol_value (sym) == vma));
985 }
986
987 /* Hold the last function name and the last line number we displayed
988 in a disassembly. */
989
990 static char *prev_functionname;
991 static unsigned int prev_line;
992
993 /* We keep a list of all files that we have seen when doing a
994 disassembly with source, so that we know how much of the file to
995 display. This can be important for inlined functions. */
996
997 struct print_file_list
998 {
999 struct print_file_list *next;
1000 const char *filename;
1001 const char *modname;
1002 const char *map;
1003 size_t mapsize;
1004 const char **linemap;
1005 unsigned maxline;
1006 unsigned last_line;
1007 int first;
1008 };
1009
1010 static struct print_file_list *print_files;
1011
1012 /* The number of preceding context lines to show when we start
1013 displaying a file for the first time. */
1014
1015 #define SHOW_PRECEDING_CONTEXT_LINES (5)
1016
1017 /* Read a complete file into memory. */
1018
1019 static const char *
1020 slurp_file (const char *fn, size_t *size)
1021 {
1022 #ifdef HAVE_MMAP
1023 int ps = getpagesize ();
1024 size_t msize;
1025 #endif
1026 const char *map;
1027 struct stat st;
1028 int fd = open (fn, O_RDONLY | O_BINARY);
1029
1030 if (fd < 0)
1031 return NULL;
1032 if (fstat (fd, &st) < 0)
1033 return NULL;
1034 *size = st.st_size;
1035 #ifdef HAVE_MMAP
1036 msize = (*size + ps - 1) & ~(ps - 1);
1037 map = mmap (NULL, msize, PROT_READ, MAP_SHARED, fd, 0);
1038 if (map != (char *)-1L)
1039 {
1040 close(fd);
1041 return map;
1042 }
1043 #endif
1044 map = (const char *) malloc (*size);
1045 if (!map || (size_t) read (fd, (char *)map, *size) != *size)
1046 {
1047 free ((void *)map);
1048 map = NULL;
1049 }
1050 close (fd);
1051 return map;
1052 }
1053
1054 #define line_map_decrease 5
1055
1056 /* Precompute array of lines for a mapped file. */
1057
1058 static const char **
1059 index_file (const char *map, size_t size, unsigned int *maxline)
1060 {
1061 const char *p, *lstart, *end;
1062 int chars_per_line = 45; /* First iteration will use 40. */
1063 unsigned int lineno;
1064 const char **linemap = NULL;
1065 unsigned long line_map_size = 0;
1066
1067 lineno = 0;
1068 lstart = map;
1069 end = map + size;
1070
1071 for (p = map; p < end; p++)
1072 {
1073 if (*p == '\n')
1074 {
1075 if (p + 1 < end && p[1] == '\r')
1076 p++;
1077 }
1078 else if (*p == '\r')
1079 {
1080 if (p + 1 < end && p[1] == '\n')
1081 p++;
1082 }
1083 else
1084 continue;
1085
1086 /* End of line found. */
1087
1088 if (linemap == NULL || line_map_size < lineno + 1)
1089 {
1090 unsigned long newsize;
1091
1092 chars_per_line -= line_map_decrease;
1093 if (chars_per_line <= 1)
1094 chars_per_line = 1;
1095 line_map_size = size / chars_per_line + 1;
1096 if (line_map_size < lineno + 1)
1097 line_map_size = lineno + 1;
1098 newsize = line_map_size * sizeof (char *);
1099 linemap = (const char **) xrealloc (linemap, newsize);
1100 }
1101
1102 linemap[lineno++] = lstart;
1103 lstart = p + 1;
1104 }
1105
1106 *maxline = lineno;
1107 return linemap;
1108 }
1109
1110 /* Tries to open MODNAME, and if successful adds a node to print_files
1111 linked list and returns that node. Returns NULL on failure. */
1112
1113 static struct print_file_list *
1114 try_print_file_open (const char *origname, const char *modname)
1115 {
1116 struct print_file_list *p;
1117
1118 p = (struct print_file_list *) xmalloc (sizeof (struct print_file_list));
1119
1120 p->map = slurp_file (modname, &p->mapsize);
1121 if (p->map == NULL)
1122 {
1123 free (p);
1124 return NULL;
1125 }
1126
1127 p->linemap = index_file (p->map, p->mapsize, &p->maxline);
1128 p->last_line = 0;
1129 p->filename = origname;
1130 p->modname = modname;
1131 p->next = print_files;
1132 p->first = 1;
1133 print_files = p;
1134 return p;
1135 }
1136
1137 /* If the the source file, as described in the symtab, is not found
1138 try to locate it in one of the paths specified with -I
1139 If found, add location to print_files linked list. */
1140
1141 static struct print_file_list *
1142 update_source_path (const char *filename)
1143 {
1144 struct print_file_list *p;
1145 const char *fname;
1146 int i;
1147
1148 if (filename == NULL)
1149 return NULL;
1150
1151 p = try_print_file_open (filename, filename);
1152 if (p != NULL)
1153 return p;
1154
1155 if (include_path_count == 0)
1156 return NULL;
1157
1158 /* Get the name of the file. */
1159 fname = lbasename (filename);
1160
1161 /* If file exists under a new path, we need to add it to the list
1162 so that show_line knows about it. */
1163 for (i = 0; i < include_path_count; i++)
1164 {
1165 char *modname = concat (include_paths[i], "/", fname, (const char *) 0);
1166
1167 p = try_print_file_open (filename, modname);
1168 if (p)
1169 return p;
1170
1171 free (modname);
1172 }
1173
1174 return NULL;
1175 }
1176
1177 /* Print a source file line. */
1178
1179 static void
1180 print_line (struct print_file_list *p, unsigned int linenum)
1181 {
1182 const char *l;
1183 size_t len;
1184
1185 --linenum;
1186 if (linenum >= p->maxline)
1187 return;
1188 l = p->linemap [linenum];
1189 /* Test fwrite return value to quiet glibc warning. */
1190 len = strcspn (l, "\n\r");
1191 if (len == 0 || fwrite (l, len, 1, stdout) == 1)
1192 putchar ('\n');
1193 }
1194
1195 /* Print a range of source code lines. */
1196
1197 static void
1198 dump_lines (struct print_file_list *p, unsigned int start, unsigned int end)
1199 {
1200 if (p->map == NULL)
1201 return;
1202 while (start <= end)
1203 {
1204 print_line (p, start);
1205 start++;
1206 }
1207 }
1208
1209 /* Show the line number, or the source line, in a disassembly
1210 listing. */
1211
1212 static void
1213 show_line (bfd *abfd, asection *section, bfd_vma addr_offset)
1214 {
1215 const char *filename;
1216 const char *functionname;
1217 unsigned int linenumber;
1218 bfd_boolean reloc;
1219
1220 if (! with_line_numbers && ! with_source_code)
1221 return;
1222
1223 if (! bfd_find_nearest_line (abfd, section, syms, addr_offset, &filename,
1224 &functionname, &linenumber))
1225 return;
1226
1227 if (filename != NULL && *filename == '\0')
1228 filename = NULL;
1229 if (functionname != NULL && *functionname == '\0')
1230 functionname = NULL;
1231
1232 if (filename
1233 && IS_ABSOLUTE_PATH (filename)
1234 && prefix)
1235 {
1236 char *path_up;
1237 const char *fname = filename;
1238 char *path = (char *) alloca (prefix_length + PATH_MAX + 1);
1239
1240 if (prefix_length)
1241 memcpy (path, prefix, prefix_length);
1242 path_up = path + prefix_length;
1243
1244 /* Build relocated filename, stripping off leading directories
1245 from the initial filename if requested. */
1246 if (prefix_strip > 0)
1247 {
1248 int level = 0;
1249 const char *s;
1250
1251 /* Skip selected directory levels. */
1252 for (s = fname + 1; *s != '\0' && level < prefix_strip; s++)
1253 if (IS_DIR_SEPARATOR(*s))
1254 {
1255 fname = s;
1256 level++;
1257 }
1258 }
1259
1260 /* Update complete filename. */
1261 strncpy (path_up, fname, PATH_MAX);
1262 path_up[PATH_MAX] = '\0';
1263
1264 filename = path;
1265 reloc = TRUE;
1266 }
1267 else
1268 reloc = FALSE;
1269
1270 if (with_line_numbers)
1271 {
1272 if (functionname != NULL
1273 && (prev_functionname == NULL
1274 || strcmp (functionname, prev_functionname) != 0))
1275 printf ("%s():\n", functionname);
1276 if (linenumber > 0 && linenumber != prev_line)
1277 printf ("%s:%u\n", filename == NULL ? "???" : filename, linenumber);
1278 }
1279
1280 if (with_source_code
1281 && filename != NULL
1282 && linenumber > 0)
1283 {
1284 struct print_file_list **pp, *p;
1285 unsigned l;
1286
1287 for (pp = &print_files; *pp != NULL; pp = &(*pp)->next)
1288 if (strcmp ((*pp)->filename, filename) == 0)
1289 break;
1290 p = *pp;
1291
1292 if (p == NULL)
1293 {
1294 if (reloc)
1295 filename = xstrdup (filename);
1296 p = update_source_path (filename);
1297 }
1298
1299 if (p != NULL && linenumber != p->last_line)
1300 {
1301 if (file_start_context && p->first)
1302 l = 1;
1303 else
1304 {
1305 l = linenumber - SHOW_PRECEDING_CONTEXT_LINES;
1306 if (l >= linenumber)
1307 l = 1;
1308 if (p->last_line >= l && p->last_line <= linenumber)
1309 l = p->last_line + 1;
1310 }
1311 dump_lines (p, l, linenumber);
1312 p->last_line = linenumber;
1313 p->first = 0;
1314 }
1315 }
1316
1317 if (functionname != NULL
1318 && (prev_functionname == NULL
1319 || strcmp (functionname, prev_functionname) != 0))
1320 {
1321 if (prev_functionname != NULL)
1322 free (prev_functionname);
1323 prev_functionname = (char *) xmalloc (strlen (functionname) + 1);
1324 strcpy (prev_functionname, functionname);
1325 }
1326
1327 if (linenumber > 0 && linenumber != prev_line)
1328 prev_line = linenumber;
1329 }
1330
1331 /* Pseudo FILE object for strings. */
1332 typedef struct
1333 {
1334 char *buffer;
1335 size_t pos;
1336 size_t alloc;
1337 } SFILE;
1338
1339 /* sprintf to a "stream". */
1340
1341 static int ATTRIBUTE_PRINTF_2
1342 objdump_sprintf (SFILE *f, const char *format, ...)
1343 {
1344 size_t n;
1345 va_list args;
1346
1347 while (1)
1348 {
1349 size_t space = f->alloc - f->pos;
1350
1351 va_start (args, format);
1352 n = vsnprintf (f->buffer + f->pos, space, format, args);
1353 va_end (args);
1354
1355 if (space > n)
1356 break;
1357
1358 f->alloc = (f->alloc + n) * 2;
1359 f->buffer = (char *) xrealloc (f->buffer, f->alloc);
1360 }
1361 f->pos += n;
1362
1363 return n;
1364 }
1365
1366 /* The number of zeroes we want to see before we start skipping them.
1367 The number is arbitrarily chosen. */
1368
1369 #define DEFAULT_SKIP_ZEROES 8
1370
1371 /* The number of zeroes to skip at the end of a section. If the
1372 number of zeroes at the end is between SKIP_ZEROES_AT_END and
1373 SKIP_ZEROES, they will be disassembled. If there are fewer than
1374 SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic
1375 attempt to avoid disassembling zeroes inserted by section
1376 alignment. */
1377
1378 #define DEFAULT_SKIP_ZEROES_AT_END 3
1379
1380 /* Disassemble some data in memory between given values. */
1381
1382 static void
1383 disassemble_bytes (struct disassemble_info * inf,
1384 disassembler_ftype disassemble_fn,
1385 bfd_boolean insns,
1386 bfd_byte * data,
1387 bfd_vma start_offset,
1388 bfd_vma stop_offset,
1389 bfd_vma rel_offset,
1390 arelent *** relppp,
1391 arelent ** relppend)
1392 {
1393 struct objdump_disasm_info *aux;
1394 asection *section;
1395 int octets_per_line;
1396 bfd_boolean done_dot;
1397 int skip_addr_chars;
1398 bfd_vma addr_offset;
1399 unsigned int opb = inf->octets_per_byte;
1400 unsigned int skip_zeroes = inf->skip_zeroes;
1401 unsigned int skip_zeroes_at_end = inf->skip_zeroes_at_end;
1402 int octets = opb;
1403 SFILE sfile;
1404
1405 aux = (struct objdump_disasm_info *) inf->application_data;
1406 section = aux->sec;
1407
1408 sfile.alloc = 120;
1409 sfile.buffer = (char *) xmalloc (sfile.alloc);
1410 sfile.pos = 0;
1411
1412 if (insn_width)
1413 octets_per_line = insn_width;
1414 else if (insns)
1415 octets_per_line = 4;
1416 else
1417 octets_per_line = 16;
1418
1419 /* Figure out how many characters to skip at the start of an
1420 address, to make the disassembly look nicer. We discard leading
1421 zeroes in chunks of 4, ensuring that there is always a leading
1422 zero remaining. */
1423 skip_addr_chars = 0;
1424 if (! prefix_addresses)
1425 {
1426 char buf[30];
1427
1428 bfd_sprintf_vma (aux->abfd, buf, section->vma + section->size / opb);
1429
1430 while (buf[skip_addr_chars] == '0')
1431 ++skip_addr_chars;
1432
1433 /* Don't discard zeros on overflow. */
1434 if (buf[skip_addr_chars] == '\0' && section->vma != 0)
1435 skip_addr_chars = 0;
1436
1437 if (skip_addr_chars != 0)
1438 skip_addr_chars = (skip_addr_chars - 1) & -4;
1439 }
1440
1441 inf->insn_info_valid = 0;
1442
1443 done_dot = FALSE;
1444 addr_offset = start_offset;
1445 while (addr_offset < stop_offset)
1446 {
1447 bfd_vma z;
1448 bfd_boolean need_nl = FALSE;
1449 int previous_octets;
1450
1451 /* Remember the length of the previous instruction. */
1452 previous_octets = octets;
1453 octets = 0;
1454
1455 /* If we see more than SKIP_ZEROES octets of zeroes, we just
1456 print `...'. */
1457 for (z = addr_offset * opb; z < stop_offset * opb; z++)
1458 if (data[z] != 0)
1459 break;
1460 if (! disassemble_zeroes
1461 && (inf->insn_info_valid == 0
1462 || inf->branch_delay_insns == 0)
1463 && (z - addr_offset * opb >= skip_zeroes
1464 || (z == stop_offset * opb &&
1465 z - addr_offset * opb < skip_zeroes_at_end)))
1466 {
1467 /* If there are more nonzero octets to follow, we only skip
1468 zeroes in multiples of 4, to try to avoid running over
1469 the start of an instruction which happens to start with
1470 zero. */
1471 if (z != stop_offset * opb)
1472 z = addr_offset * opb + ((z - addr_offset * opb) &~ 3);
1473
1474 octets = z - addr_offset * opb;
1475
1476 /* If we are going to display more data, and we are displaying
1477 file offsets, then tell the user how many zeroes we skip
1478 and the file offset from where we resume dumping. */
1479 if (display_file_offsets && ((addr_offset + (octets / opb)) < stop_offset))
1480 printf ("\t... (skipping %d zeroes, resuming at file offset: 0x%lx)\n",
1481 octets / opb,
1482 (unsigned long) (section->filepos
1483 + (addr_offset + (octets / opb))));
1484 else
1485 printf ("\t...\n");
1486 }
1487 else
1488 {
1489 char buf[50];
1490 int bpc = 0;
1491 int pb = 0;
1492
1493 done_dot = FALSE;
1494
1495 if (with_line_numbers || with_source_code)
1496 show_line (aux->abfd, section, addr_offset);
1497
1498 if (! prefix_addresses)
1499 {
1500 char *s;
1501
1502 bfd_sprintf_vma (aux->abfd, buf, section->vma + addr_offset);
1503 for (s = buf + skip_addr_chars; *s == '0'; s++)
1504 *s = ' ';
1505 if (*s == '\0')
1506 *--s = '0';
1507 printf ("%s:\t", buf + skip_addr_chars);
1508 }
1509 else
1510 {
1511 aux->require_sec = TRUE;
1512 objdump_print_address (section->vma + addr_offset, inf);
1513 aux->require_sec = FALSE;
1514 putchar (' ');
1515 }
1516
1517 if (insns)
1518 {
1519 sfile.pos = 0;
1520 inf->fprintf_func = (fprintf_ftype) objdump_sprintf;
1521 inf->stream = &sfile;
1522 inf->bytes_per_line = 0;
1523 inf->bytes_per_chunk = 0;
1524 inf->flags = disassemble_all ? DISASSEMBLE_DATA : 0;
1525 if (machine)
1526 inf->flags |= USER_SPECIFIED_MACHINE_TYPE;
1527
1528 if (inf->disassembler_needs_relocs
1529 && (bfd_get_file_flags (aux->abfd) & EXEC_P) == 0
1530 && (bfd_get_file_flags (aux->abfd) & DYNAMIC) == 0
1531 && *relppp < relppend)
1532 {
1533 bfd_signed_vma distance_to_rel;
1534
1535 distance_to_rel = (**relppp)->address
1536 - (rel_offset + addr_offset);
1537
1538 /* Check to see if the current reloc is associated with
1539 the instruction that we are about to disassemble. */
1540 if (distance_to_rel == 0
1541 /* FIXME: This is wrong. We are trying to catch
1542 relocs that are addressed part way through the
1543 current instruction, as might happen with a packed
1544 VLIW instruction. Unfortunately we do not know the
1545 length of the current instruction since we have not
1546 disassembled it yet. Instead we take a guess based
1547 upon the length of the previous instruction. The
1548 proper solution is to have a new target-specific
1549 disassembler function which just returns the length
1550 of an instruction at a given address without trying
1551 to display its disassembly. */
1552 || (distance_to_rel > 0
1553 && distance_to_rel < (bfd_signed_vma) (previous_octets/ opb)))
1554 {
1555 inf->flags |= INSN_HAS_RELOC;
1556 aux->reloc = **relppp;
1557 }
1558 else
1559 aux->reloc = NULL;
1560 }
1561
1562 octets = (*disassemble_fn) (section->vma + addr_offset, inf);
1563 inf->fprintf_func = (fprintf_ftype) fprintf;
1564 inf->stream = stdout;
1565 if (insn_width == 0 && inf->bytes_per_line != 0)
1566 octets_per_line = inf->bytes_per_line;
1567 if (octets < 0)
1568 {
1569 if (sfile.pos)
1570 printf ("%s\n", sfile.buffer);
1571 break;
1572 }
1573 }
1574 else
1575 {
1576 bfd_vma j;
1577
1578 octets = octets_per_line;
1579 if (addr_offset + octets / opb > stop_offset)
1580 octets = (stop_offset - addr_offset) * opb;
1581
1582 for (j = addr_offset * opb; j < addr_offset * opb + octets; ++j)
1583 {
1584 if (ISPRINT (data[j]))
1585 buf[j - addr_offset * opb] = data[j];
1586 else
1587 buf[j - addr_offset * opb] = '.';
1588 }
1589 buf[j - addr_offset * opb] = '\0';
1590 }
1591
1592 if (prefix_addresses
1593 ? show_raw_insn > 0
1594 : show_raw_insn >= 0)
1595 {
1596 bfd_vma j;
1597
1598 /* If ! prefix_addresses and ! wide_output, we print
1599 octets_per_line octets per line. */
1600 pb = octets;
1601 if (pb > octets_per_line && ! prefix_addresses && ! wide_output)
1602 pb = octets_per_line;
1603
1604 if (inf->bytes_per_chunk)
1605 bpc = inf->bytes_per_chunk;
1606 else
1607 bpc = 1;
1608
1609 for (j = addr_offset * opb; j < addr_offset * opb + pb; j += bpc)
1610 {
1611 int k;
1612
1613 if (bpc > 1 && inf->display_endian == BFD_ENDIAN_LITTLE)
1614 {
1615 for (k = bpc - 1; k >= 0; k--)
1616 printf ("%02x", (unsigned) data[j + k]);
1617 putchar (' ');
1618 }
1619 else
1620 {
1621 for (k = 0; k < bpc; k++)
1622 printf ("%02x", (unsigned) data[j + k]);
1623 putchar (' ');
1624 }
1625 }
1626
1627 for (; pb < octets_per_line; pb += bpc)
1628 {
1629 int k;
1630
1631 for (k = 0; k < bpc; k++)
1632 printf (" ");
1633 putchar (' ');
1634 }
1635
1636 /* Separate raw data from instruction by extra space. */
1637 if (insns)
1638 putchar ('\t');
1639 else
1640 printf (" ");
1641 }
1642
1643 if (! insns)
1644 printf ("%s", buf);
1645 else if (sfile.pos)
1646 printf ("%s", sfile.buffer);
1647
1648 if (prefix_addresses
1649 ? show_raw_insn > 0
1650 : show_raw_insn >= 0)
1651 {
1652 while (pb < octets)
1653 {
1654 bfd_vma j;
1655 char *s;
1656
1657 putchar ('\n');
1658 j = addr_offset * opb + pb;
1659
1660 bfd_sprintf_vma (aux->abfd, buf, section->vma + j / opb);
1661 for (s = buf + skip_addr_chars; *s == '0'; s++)
1662 *s = ' ';
1663 if (*s == '\0')
1664 *--s = '0';
1665 printf ("%s:\t", buf + skip_addr_chars);
1666
1667 pb += octets_per_line;
1668 if (pb > octets)
1669 pb = octets;
1670 for (; j < addr_offset * opb + pb; j += bpc)
1671 {
1672 int k;
1673
1674 if (bpc > 1 && inf->display_endian == BFD_ENDIAN_LITTLE)
1675 {
1676 for (k = bpc - 1; k >= 0; k--)
1677 printf ("%02x", (unsigned) data[j + k]);
1678 putchar (' ');
1679 }
1680 else
1681 {
1682 for (k = 0; k < bpc; k++)
1683 printf ("%02x", (unsigned) data[j + k]);
1684 putchar (' ');
1685 }
1686 }
1687 }
1688 }
1689
1690 if (!wide_output)
1691 putchar ('\n');
1692 else
1693 need_nl = TRUE;
1694 }
1695
1696 while ((*relppp) < relppend
1697 && (**relppp)->address < rel_offset + addr_offset + octets / opb)
1698 {
1699 if (dump_reloc_info || dump_dynamic_reloc_info)
1700 {
1701 arelent *q;
1702
1703 q = **relppp;
1704
1705 if (wide_output)
1706 putchar ('\t');
1707 else
1708 printf ("\t\t\t");
1709
1710 objdump_print_value (section->vma - rel_offset + q->address,
1711 inf, TRUE);
1712
1713 if (q->howto == NULL)
1714 printf (": *unknown*\t");
1715 else if (q->howto->name)
1716 printf (": %s\t", q->howto->name);
1717 else
1718 printf (": %d\t", q->howto->type);
1719
1720 if (q->sym_ptr_ptr == NULL || *q->sym_ptr_ptr == NULL)
1721 printf ("*unknown*");
1722 else
1723 {
1724 const char *sym_name;
1725
1726 sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
1727 if (sym_name != NULL && *sym_name != '\0')
1728 objdump_print_symname (aux->abfd, inf, *q->sym_ptr_ptr);
1729 else
1730 {
1731 asection *sym_sec;
1732
1733 sym_sec = bfd_get_section (*q->sym_ptr_ptr);
1734 sym_name = bfd_get_section_name (aux->abfd, sym_sec);
1735 if (sym_name == NULL || *sym_name == '\0')
1736 sym_name = "*unknown*";
1737 printf ("%s", sym_name);
1738 }
1739 }
1740
1741 if (q->addend)
1742 {
1743 printf ("+0x");
1744 objdump_print_value (q->addend, inf, TRUE);
1745 }
1746
1747 printf ("\n");
1748 need_nl = FALSE;
1749 }
1750 ++(*relppp);
1751 }
1752
1753 if (need_nl)
1754 printf ("\n");
1755
1756 addr_offset += octets / opb;
1757 }
1758
1759 free (sfile.buffer);
1760 }
1761
1762 static void
1763 disassemble_section (bfd *abfd, asection *section, void *inf)
1764 {
1765 const struct elf_backend_data * bed;
1766 bfd_vma sign_adjust = 0;
1767 struct disassemble_info * pinfo = (struct disassemble_info *) inf;
1768 struct objdump_disasm_info * paux;
1769 unsigned int opb = pinfo->octets_per_byte;
1770 bfd_byte * data = NULL;
1771 bfd_size_type datasize = 0;
1772 arelent ** rel_pp = NULL;
1773 arelent ** rel_ppstart = NULL;
1774 arelent ** rel_ppend;
1775 unsigned long stop_offset;
1776 asymbol * sym = NULL;
1777 long place = 0;
1778 long rel_count;
1779 bfd_vma rel_offset;
1780 unsigned long addr_offset;
1781
1782 /* Sections that do not contain machine
1783 code are not normally disassembled. */
1784 if (! disassemble_all
1785 && only == NULL
1786 && ((section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
1787 != (SEC_CODE | SEC_HAS_CONTENTS)))
1788 return;
1789
1790 if (! process_section_p (section))
1791 return;
1792
1793 datasize = bfd_get_section_size (section);
1794 if (datasize == 0)
1795 return;
1796
1797 /* Decide which set of relocs to use. Load them if necessary. */
1798 paux = (struct objdump_disasm_info *) pinfo->application_data;
1799 if (paux->dynrelbuf)
1800 {
1801 rel_pp = paux->dynrelbuf;
1802 rel_count = paux->dynrelcount;
1803 /* Dynamic reloc addresses are absolute, non-dynamic are section
1804 relative. REL_OFFSET specifies the reloc address corresponding
1805 to the start of this section. */
1806 rel_offset = section->vma;
1807 }
1808 else
1809 {
1810 rel_count = 0;
1811 rel_pp = NULL;
1812 rel_offset = 0;
1813
1814 if ((section->flags & SEC_RELOC) != 0
1815 && (dump_reloc_info || pinfo->disassembler_needs_relocs))
1816 {
1817 long relsize;
1818
1819 relsize = bfd_get_reloc_upper_bound (abfd, section);
1820 if (relsize < 0)
1821 bfd_fatal (bfd_get_filename (abfd));
1822
1823 if (relsize > 0)
1824 {
1825 rel_ppstart = rel_pp = (arelent **) xmalloc (relsize);
1826 rel_count = bfd_canonicalize_reloc (abfd, section, rel_pp, syms);
1827 if (rel_count < 0)
1828 bfd_fatal (bfd_get_filename (abfd));
1829
1830 /* Sort the relocs by address. */
1831 qsort (rel_pp, rel_count, sizeof (arelent *), compare_relocs);
1832 }
1833 }
1834 }
1835 rel_ppend = rel_pp + rel_count;
1836
1837 data = (bfd_byte *) xmalloc (datasize);
1838
1839 bfd_get_section_contents (abfd, section, data, 0, datasize);
1840
1841 paux->sec = section;
1842 pinfo->buffer = data;
1843 pinfo->buffer_vma = section->vma;
1844 pinfo->buffer_length = datasize;
1845 pinfo->section = section;
1846
1847 if (start_address == (bfd_vma) -1
1848 || start_address < pinfo->buffer_vma)
1849 addr_offset = 0;
1850 else
1851 addr_offset = start_address - pinfo->buffer_vma;
1852
1853 if (stop_address == (bfd_vma) -1)
1854 stop_offset = datasize / opb;
1855 else
1856 {
1857 if (stop_address < pinfo->buffer_vma)
1858 stop_offset = 0;
1859 else
1860 stop_offset = stop_address - pinfo->buffer_vma;
1861 if (stop_offset > pinfo->buffer_length / opb)
1862 stop_offset = pinfo->buffer_length / opb;
1863 }
1864
1865 /* Skip over the relocs belonging to addresses below the
1866 start address. */
1867 while (rel_pp < rel_ppend
1868 && (*rel_pp)->address < rel_offset + addr_offset)
1869 ++rel_pp;
1870
1871 if (addr_offset < stop_offset)
1872 printf (_("\nDisassembly of section %s:\n"), section->name);
1873
1874 /* Find the nearest symbol forwards from our current position. */
1875 paux->require_sec = TRUE;
1876 sym = (asymbol *) find_symbol_for_address (section->vma + addr_offset,
1877 (struct disassemble_info *) inf,
1878 &place);
1879 paux->require_sec = FALSE;
1880
1881 /* PR 9774: If the target used signed addresses then we must make
1882 sure that we sign extend the value that we calculate for 'addr'
1883 in the loop below. */
1884 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
1885 && (bed = get_elf_backend_data (abfd)) != NULL
1886 && bed->sign_extend_vma)
1887 sign_adjust = (bfd_vma) 1 << (bed->s->arch_size - 1);
1888
1889 /* Disassemble a block of instructions up to the address associated with
1890 the symbol we have just found. Then print the symbol and find the
1891 next symbol on. Repeat until we have disassembled the entire section
1892 or we have reached the end of the address range we are interested in. */
1893 while (addr_offset < stop_offset)
1894 {
1895 bfd_vma addr;
1896 asymbol *nextsym;
1897 unsigned long nextstop_offset;
1898 bfd_boolean insns;
1899
1900 addr = section->vma + addr_offset;
1901 addr = ((addr & ((sign_adjust << 1) - 1)) ^ sign_adjust) - sign_adjust;
1902
1903 if (sym != NULL && bfd_asymbol_value (sym) <= addr)
1904 {
1905 int x;
1906
1907 for (x = place;
1908 (x < sorted_symcount
1909 && (bfd_asymbol_value (sorted_syms[x]) <= addr));
1910 ++x)
1911 continue;
1912
1913 pinfo->symbols = sorted_syms + place;
1914 pinfo->num_symbols = x - place;
1915 pinfo->symtab_pos = place;
1916 }
1917 else
1918 {
1919 pinfo->symbols = NULL;
1920 pinfo->num_symbols = 0;
1921 pinfo->symtab_pos = -1;
1922 }
1923
1924 if (! prefix_addresses)
1925 {
1926 pinfo->fprintf_func (pinfo->stream, "\n");
1927 objdump_print_addr_with_sym (abfd, section, sym, addr,
1928 pinfo, FALSE);
1929 pinfo->fprintf_func (pinfo->stream, ":\n");
1930 }
1931
1932 if (sym != NULL && bfd_asymbol_value (sym) > addr)
1933 nextsym = sym;
1934 else if (sym == NULL)
1935 nextsym = NULL;
1936 else
1937 {
1938 #define is_valid_next_sym(SYM) \
1939 ((SYM)->section == section \
1940 && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
1941 && pinfo->symbol_is_valid (SYM, pinfo))
1942
1943 /* Search forward for the next appropriate symbol in
1944 SECTION. Note that all the symbols are sorted
1945 together into one big array, and that some sections
1946 may have overlapping addresses. */
1947 while (place < sorted_symcount
1948 && ! is_valid_next_sym (sorted_syms [place]))
1949 ++place;
1950
1951 if (place >= sorted_symcount)
1952 nextsym = NULL;
1953 else
1954 nextsym = sorted_syms[place];
1955 }
1956
1957 if (sym != NULL && bfd_asymbol_value (sym) > addr)
1958 nextstop_offset = bfd_asymbol_value (sym) - section->vma;
1959 else if (nextsym == NULL)
1960 nextstop_offset = stop_offset;
1961 else
1962 nextstop_offset = bfd_asymbol_value (nextsym) - section->vma;
1963
1964 if (nextstop_offset > stop_offset
1965 || nextstop_offset <= addr_offset)
1966 nextstop_offset = stop_offset;
1967
1968 /* If a symbol is explicitly marked as being an object
1969 rather than a function, just dump the bytes without
1970 disassembling them. */
1971 if (disassemble_all
1972 || sym == NULL
1973 || sym->section != section
1974 || bfd_asymbol_value (sym) > addr
1975 || ((sym->flags & BSF_OBJECT) == 0
1976 && (strstr (bfd_asymbol_name (sym), "gnu_compiled")
1977 == NULL)
1978 && (strstr (bfd_asymbol_name (sym), "gcc2_compiled")
1979 == NULL))
1980 || (sym->flags & BSF_FUNCTION) != 0)
1981 insns = TRUE;
1982 else
1983 insns = FALSE;
1984
1985 disassemble_bytes (pinfo, paux->disassemble_fn, insns, data,
1986 addr_offset, nextstop_offset,
1987 rel_offset, &rel_pp, rel_ppend);
1988
1989 addr_offset = nextstop_offset;
1990 sym = nextsym;
1991 }
1992
1993 free (data);
1994
1995 if (rel_ppstart != NULL)
1996 free (rel_ppstart);
1997 }
1998
1999 /* Disassemble the contents of an object file. */
2000
2001 static void
2002 disassemble_data (bfd *abfd)
2003 {
2004 struct disassemble_info disasm_info;
2005 struct objdump_disasm_info aux;
2006 long i;
2007
2008 print_files = NULL;
2009 prev_functionname = NULL;
2010 prev_line = -1;
2011
2012 /* We make a copy of syms to sort. We don't want to sort syms
2013 because that will screw up the relocs. */
2014 sorted_symcount = symcount ? symcount : dynsymcount;
2015 sorted_syms = (asymbol **) xmalloc ((sorted_symcount + synthcount)
2016 * sizeof (asymbol *));
2017 memcpy (sorted_syms, symcount ? syms : dynsyms,
2018 sorted_symcount * sizeof (asymbol *));
2019
2020 sorted_symcount = remove_useless_symbols (sorted_syms, sorted_symcount);
2021
2022 for (i = 0; i < synthcount; ++i)
2023 {
2024 sorted_syms[sorted_symcount] = synthsyms + i;
2025 ++sorted_symcount;
2026 }
2027
2028 /* Sort the symbols into section and symbol order. */
2029 qsort (sorted_syms, sorted_symcount, sizeof (asymbol *), compare_symbols);
2030
2031 init_disassemble_info (&disasm_info, stdout, (fprintf_ftype) fprintf);
2032
2033 disasm_info.application_data = (void *) &aux;
2034 aux.abfd = abfd;
2035 aux.require_sec = FALSE;
2036 aux.dynrelbuf = NULL;
2037 aux.dynrelcount = 0;
2038 aux.reloc = NULL;
2039
2040 disasm_info.print_address_func = objdump_print_address;
2041 disasm_info.symbol_at_address_func = objdump_symbol_at_address;
2042
2043 if (machine != NULL)
2044 {
2045 const bfd_arch_info_type *inf = bfd_scan_arch (machine);
2046
2047 if (inf == NULL)
2048 fatal (_("Can't use supplied machine %s"), machine);
2049
2050 abfd->arch_info = inf;
2051 }
2052
2053 if (endian != BFD_ENDIAN_UNKNOWN)
2054 {
2055 struct bfd_target *xvec;
2056
2057 xvec = (struct bfd_target *) xmalloc (sizeof (struct bfd_target));
2058 memcpy (xvec, abfd->xvec, sizeof (struct bfd_target));
2059 xvec->byteorder = endian;
2060 abfd->xvec = xvec;
2061 }
2062
2063 /* Use libopcodes to locate a suitable disassembler. */
2064 aux.disassemble_fn = disassembler (abfd);
2065 if (!aux.disassemble_fn)
2066 {
2067 non_fatal (_("Can't disassemble for architecture %s\n"),
2068 bfd_printable_arch_mach (bfd_get_arch (abfd), 0));
2069 exit_status = 1;
2070 return;
2071 }
2072
2073 disasm_info.flavour = bfd_get_flavour (abfd);
2074 disasm_info.arch = bfd_get_arch (abfd);
2075 disasm_info.mach = bfd_get_mach (abfd);
2076 disasm_info.disassembler_options = disassembler_options;
2077 disasm_info.octets_per_byte = bfd_octets_per_byte (abfd);
2078 disasm_info.skip_zeroes = DEFAULT_SKIP_ZEROES;
2079 disasm_info.skip_zeroes_at_end = DEFAULT_SKIP_ZEROES_AT_END;
2080 disasm_info.disassembler_needs_relocs = FALSE;
2081
2082 if (bfd_big_endian (abfd))
2083 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_BIG;
2084 else if (bfd_little_endian (abfd))
2085 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_LITTLE;
2086 else
2087 /* ??? Aborting here seems too drastic. We could default to big or little
2088 instead. */
2089 disasm_info.endian = BFD_ENDIAN_UNKNOWN;
2090
2091 /* Allow the target to customize the info structure. */
2092 disassemble_init_for_target (& disasm_info);
2093
2094 /* Pre-load the dynamic relocs if we are going
2095 to be dumping them along with the disassembly. */
2096 if (dump_dynamic_reloc_info)
2097 {
2098 long relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2099
2100 if (relsize < 0)
2101 bfd_fatal (bfd_get_filename (abfd));
2102
2103 if (relsize > 0)
2104 {
2105 aux.dynrelbuf = (arelent **) xmalloc (relsize);
2106 aux.dynrelcount = bfd_canonicalize_dynamic_reloc (abfd,
2107 aux.dynrelbuf,
2108 dynsyms);
2109 if (aux.dynrelcount < 0)
2110 bfd_fatal (bfd_get_filename (abfd));
2111
2112 /* Sort the relocs by address. */
2113 qsort (aux.dynrelbuf, aux.dynrelcount, sizeof (arelent *),
2114 compare_relocs);
2115 }
2116 }
2117 disasm_info.symtab = sorted_syms;
2118 disasm_info.symtab_size = sorted_symcount;
2119
2120 bfd_map_over_sections (abfd, disassemble_section, & disasm_info);
2121
2122 if (aux.dynrelbuf != NULL)
2123 free (aux.dynrelbuf);
2124 free (sorted_syms);
2125 }
2126 \f
2127 static int
2128 load_specific_debug_section (enum dwarf_section_display_enum debug,
2129 asection *sec, void *file)
2130 {
2131 struct dwarf_section *section = &debug_displays [debug].section;
2132 bfd *abfd = (bfd *) file;
2133 bfd_boolean ret;
2134 int section_is_compressed;
2135
2136 /* If it is already loaded, do nothing. */
2137 if (section->start != NULL)
2138 return 1;
2139
2140 section_is_compressed = section->name == section->compressed_name;
2141
2142 section->address = 0;
2143 section->size = bfd_get_section_size (sec);
2144 section->start = (unsigned char *) xmalloc (section->size);
2145
2146 if (is_relocatable && debug_displays [debug].relocate)
2147 ret = bfd_simple_get_relocated_section_contents (abfd,
2148 sec,
2149 section->start,
2150 syms) != NULL;
2151 else
2152 ret = bfd_get_section_contents (abfd, sec, section->start, 0,
2153 section->size);
2154
2155 if (! ret)
2156 {
2157 free_debug_section (debug);
2158 printf (_("\nCan't get contents for section '%s'.\n"),
2159 section->name);
2160 return 0;
2161 }
2162
2163 if (section_is_compressed)
2164 {
2165 bfd_size_type size = section->size;
2166 if (! bfd_uncompress_section_contents (&section->start, &size))
2167 {
2168 free_debug_section (debug);
2169 printf (_("\nCan't uncompress section '%s'.\n"), section->name);
2170 return 0;
2171 }
2172 section->size = size;
2173 }
2174
2175 return 1;
2176 }
2177
2178 int
2179 load_debug_section (enum dwarf_section_display_enum debug, void *file)
2180 {
2181 struct dwarf_section *section = &debug_displays [debug].section;
2182 bfd *abfd = (bfd *) file;
2183 asection *sec;
2184
2185 /* If it is already loaded, do nothing. */
2186 if (section->start != NULL)
2187 return 1;
2188
2189 /* Locate the debug section. */
2190 sec = bfd_get_section_by_name (abfd, section->uncompressed_name);
2191 if (sec != NULL)
2192 section->name = section->uncompressed_name;
2193 else
2194 {
2195 sec = bfd_get_section_by_name (abfd, section->compressed_name);
2196 if (sec != NULL)
2197 section->name = section->compressed_name;
2198 }
2199 if (sec == NULL)
2200 return 0;
2201
2202 return load_specific_debug_section (debug, sec, file);
2203 }
2204
2205 void
2206 free_debug_section (enum dwarf_section_display_enum debug)
2207 {
2208 struct dwarf_section *section = &debug_displays [debug].section;
2209
2210 if (section->start == NULL)
2211 return;
2212
2213 free ((char *) section->start);
2214 section->start = NULL;
2215 section->address = 0;
2216 section->size = 0;
2217 }
2218
2219 static void
2220 dump_dwarf_section (bfd *abfd, asection *section,
2221 void *arg ATTRIBUTE_UNUSED)
2222 {
2223 const char *name = bfd_get_section_name (abfd, section);
2224 const char *match;
2225 int i;
2226
2227 if (CONST_STRNEQ (name, ".gnu.linkonce.wi."))
2228 match = ".debug_info";
2229 else
2230 match = name;
2231
2232 for (i = 0; i < max; i++)
2233 if ((strcmp (debug_displays [i].section.uncompressed_name, match) == 0
2234 || strcmp (debug_displays [i].section.compressed_name, match) == 0)
2235 && debug_displays [i].enabled != NULL
2236 && *debug_displays [i].enabled)
2237 {
2238 struct dwarf_section *sec = &debug_displays [i].section;
2239
2240 if (strcmp (sec->uncompressed_name, match) == 0)
2241 sec->name = sec->uncompressed_name;
2242 else
2243 sec->name = sec->compressed_name;
2244 if (load_specific_debug_section ((enum dwarf_section_display_enum) i,
2245 section, abfd))
2246 {
2247 debug_displays [i].display (sec, abfd);
2248
2249 if (i != info && i != abbrev)
2250 free_debug_section ((enum dwarf_section_display_enum) i);
2251 }
2252 break;
2253 }
2254 }
2255
2256 /* Dump the dwarf debugging information. */
2257
2258 static void
2259 dump_dwarf (bfd *abfd)
2260 {
2261 is_relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2262
2263 /* FIXME: bfd_get_arch_size may return -1. We assume that 64bit
2264 targets will return 64. */
2265 eh_addr_size = bfd_get_arch_size (abfd) == 64 ? 8 : 4;
2266
2267 if (bfd_big_endian (abfd))
2268 byte_get = byte_get_big_endian;
2269 else if (bfd_little_endian (abfd))
2270 byte_get = byte_get_little_endian;
2271 else
2272 abort ();
2273
2274 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
2275 {
2276 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2277 init_dwarf_regnames (bed->elf_machine_code);
2278 }
2279
2280 bfd_map_over_sections (abfd, dump_dwarf_section, NULL);
2281
2282 free_debug_memory ();
2283 }
2284 \f
2285 /* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
2286 it. Return NULL on failure. */
2287
2288 static char *
2289 read_section_stabs (bfd *abfd, const char *sect_name, bfd_size_type *size_ptr)
2290 {
2291 asection *stabsect;
2292 bfd_size_type size;
2293 char *contents;
2294
2295 stabsect = bfd_get_section_by_name (abfd, sect_name);
2296 if (stabsect == NULL)
2297 {
2298 printf (_("No %s section present\n\n"), sect_name);
2299 return FALSE;
2300 }
2301
2302 size = bfd_section_size (abfd, stabsect);
2303 contents = (char *) xmalloc (size);
2304
2305 if (! bfd_get_section_contents (abfd, stabsect, contents, 0, size))
2306 {
2307 non_fatal (_("Reading %s section of %s failed: %s"),
2308 sect_name, bfd_get_filename (abfd),
2309 bfd_errmsg (bfd_get_error ()));
2310 free (contents);
2311 exit_status = 1;
2312 return NULL;
2313 }
2314
2315 *size_ptr = size;
2316
2317 return contents;
2318 }
2319
2320 /* Stabs entries use a 12 byte format:
2321 4 byte string table index
2322 1 byte stab type
2323 1 byte stab other field
2324 2 byte stab desc field
2325 4 byte stab value
2326 FIXME: This will have to change for a 64 bit object format. */
2327
2328 #define STRDXOFF (0)
2329 #define TYPEOFF (4)
2330 #define OTHEROFF (5)
2331 #define DESCOFF (6)
2332 #define VALOFF (8)
2333 #define STABSIZE (12)
2334
2335 /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
2336 using string table section STRSECT_NAME (in `strtab'). */
2337
2338 static void
2339 print_section_stabs (bfd *abfd,
2340 const char *stabsect_name,
2341 unsigned *string_offset_ptr)
2342 {
2343 int i;
2344 unsigned file_string_table_offset = 0;
2345 unsigned next_file_string_table_offset = *string_offset_ptr;
2346 bfd_byte *stabp, *stabs_end;
2347
2348 stabp = stabs;
2349 stabs_end = stabp + stab_size;
2350
2351 printf (_("Contents of %s section:\n\n"), stabsect_name);
2352 printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
2353
2354 /* Loop through all symbols and print them.
2355
2356 We start the index at -1 because there is a dummy symbol on
2357 the front of stabs-in-{coff,elf} sections that supplies sizes. */
2358 for (i = -1; stabp < stabs_end; stabp += STABSIZE, i++)
2359 {
2360 const char *name;
2361 unsigned long strx;
2362 unsigned char type, other;
2363 unsigned short desc;
2364 bfd_vma value;
2365
2366 strx = bfd_h_get_32 (abfd, stabp + STRDXOFF);
2367 type = bfd_h_get_8 (abfd, stabp + TYPEOFF);
2368 other = bfd_h_get_8 (abfd, stabp + OTHEROFF);
2369 desc = bfd_h_get_16 (abfd, stabp + DESCOFF);
2370 value = bfd_h_get_32 (abfd, stabp + VALOFF);
2371
2372 printf ("\n%-6d ", i);
2373 /* Either print the stab name, or, if unnamed, print its number
2374 again (makes consistent formatting for tools like awk). */
2375 name = bfd_get_stab_name (type);
2376 if (name != NULL)
2377 printf ("%-6s", name);
2378 else if (type == N_UNDF)
2379 printf ("HdrSym");
2380 else
2381 printf ("%-6d", type);
2382 printf (" %-6d %-6d ", other, desc);
2383 bfd_printf_vma (abfd, value);
2384 printf (" %-6lu", strx);
2385
2386 /* Symbols with type == 0 (N_UNDF) specify the length of the
2387 string table associated with this file. We use that info
2388 to know how to relocate the *next* file's string table indices. */
2389 if (type == N_UNDF)
2390 {
2391 file_string_table_offset = next_file_string_table_offset;
2392 next_file_string_table_offset += value;
2393 }
2394 else
2395 {
2396 /* Using the (possibly updated) string table offset, print the
2397 string (if any) associated with this symbol. */
2398 if ((strx + file_string_table_offset) < stabstr_size)
2399 printf (" %s", &strtab[strx + file_string_table_offset]);
2400 else
2401 printf (" *");
2402 }
2403 }
2404 printf ("\n\n");
2405 *string_offset_ptr = next_file_string_table_offset;
2406 }
2407
2408 typedef struct
2409 {
2410 const char * section_name;
2411 const char * string_section_name;
2412 unsigned string_offset;
2413 }
2414 stab_section_names;
2415
2416 static void
2417 find_stabs_section (bfd *abfd, asection *section, void *names)
2418 {
2419 int len;
2420 stab_section_names * sought = (stab_section_names *) names;
2421
2422 /* Check for section names for which stabsect_name is a prefix, to
2423 handle .stab.N, etc. */
2424 len = strlen (sought->section_name);
2425
2426 /* If the prefix matches, and the files section name ends with a
2427 nul or a digit, then we match. I.e., we want either an exact
2428 match or a section followed by a number. */
2429 if (strncmp (sought->section_name, section->name, len) == 0
2430 && (section->name[len] == 0
2431 || (section->name[len] == '.' && ISDIGIT (section->name[len + 1]))))
2432 {
2433 if (strtab == NULL)
2434 strtab = read_section_stabs (abfd, sought->string_section_name,
2435 &stabstr_size);
2436
2437 if (strtab)
2438 {
2439 stabs = (bfd_byte *) read_section_stabs (abfd, section->name,
2440 &stab_size);
2441 if (stabs)
2442 print_section_stabs (abfd, section->name, &sought->string_offset);
2443 }
2444 }
2445 }
2446
2447 static void
2448 dump_stabs_section (bfd *abfd, char *stabsect_name, char *strsect_name)
2449 {
2450 stab_section_names s;
2451
2452 s.section_name = stabsect_name;
2453 s.string_section_name = strsect_name;
2454 s.string_offset = 0;
2455
2456 bfd_map_over_sections (abfd, find_stabs_section, & s);
2457
2458 free (strtab);
2459 strtab = NULL;
2460 }
2461
2462 /* Dump the any sections containing stabs debugging information. */
2463
2464 static void
2465 dump_stabs (bfd *abfd)
2466 {
2467 dump_stabs_section (abfd, ".stab", ".stabstr");
2468 dump_stabs_section (abfd, ".stab.excl", ".stab.exclstr");
2469 dump_stabs_section (abfd, ".stab.index", ".stab.indexstr");
2470
2471 /* For Darwin. */
2472 dump_stabs_section (abfd, "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr");
2473
2474 dump_stabs_section (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
2475 }
2476 \f
2477 static void
2478 dump_bfd_header (bfd *abfd)
2479 {
2480 char *comma = "";
2481
2482 printf (_("architecture: %s, "),
2483 bfd_printable_arch_mach (bfd_get_arch (abfd),
2484 bfd_get_mach (abfd)));
2485 printf (_("flags 0x%08x:\n"), abfd->flags);
2486
2487 #define PF(x, y) if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
2488 PF (HAS_RELOC, "HAS_RELOC");
2489 PF (EXEC_P, "EXEC_P");
2490 PF (HAS_LINENO, "HAS_LINENO");
2491 PF (HAS_DEBUG, "HAS_DEBUG");
2492 PF (HAS_SYMS, "HAS_SYMS");
2493 PF (HAS_LOCALS, "HAS_LOCALS");
2494 PF (DYNAMIC, "DYNAMIC");
2495 PF (WP_TEXT, "WP_TEXT");
2496 PF (D_PAGED, "D_PAGED");
2497 PF (BFD_IS_RELAXABLE, "BFD_IS_RELAXABLE");
2498 PF (HAS_LOAD_PAGE, "HAS_LOAD_PAGE");
2499 printf (_("\nstart address 0x"));
2500 bfd_printf_vma (abfd, abfd->start_address);
2501 printf ("\n");
2502 }
2503
2504 \f
2505 static void
2506 dump_bfd_private_header (bfd *abfd)
2507 {
2508 bfd_print_private_bfd_data (abfd, stdout);
2509 }
2510
2511 \f
2512 /* Display a section in hexadecimal format with associated characters.
2513 Each line prefixed by the zero padded address. */
2514
2515 static void
2516 dump_section (bfd *abfd, asection *section, void *dummy ATTRIBUTE_UNUSED)
2517 {
2518 bfd_byte *data = 0;
2519 bfd_size_type datasize;
2520 bfd_size_type addr_offset;
2521 bfd_size_type start_offset;
2522 bfd_size_type stop_offset;
2523 unsigned int opb = bfd_octets_per_byte (abfd);
2524 /* Bytes per line. */
2525 const int onaline = 16;
2526 char buf[64];
2527 int count;
2528 int width;
2529
2530 if ((section->flags & SEC_HAS_CONTENTS) == 0)
2531 return;
2532
2533 if (! process_section_p (section))
2534 return;
2535
2536 if ((datasize = bfd_section_size (abfd, section)) == 0)
2537 return;
2538
2539 /* Compute the address range to display. */
2540 if (start_address == (bfd_vma) -1
2541 || start_address < section->vma)
2542 start_offset = 0;
2543 else
2544 start_offset = start_address - section->vma;
2545
2546 if (stop_address == (bfd_vma) -1)
2547 stop_offset = datasize / opb;
2548 else
2549 {
2550 if (stop_address < section->vma)
2551 stop_offset = 0;
2552 else
2553 stop_offset = stop_address - section->vma;
2554
2555 if (stop_offset > datasize / opb)
2556 stop_offset = datasize / opb;
2557 }
2558
2559 if (start_offset >= stop_offset)
2560 return;
2561
2562 printf (_("Contents of section %s:"), section->name);
2563 if (display_file_offsets)
2564 printf (_(" (Starting at file offset: 0x%lx)"),
2565 (unsigned long) (section->filepos + start_offset));
2566 printf ("\n");
2567
2568 data = (bfd_byte *) xmalloc (datasize);
2569
2570 bfd_get_section_contents (abfd, section, data, 0, datasize);
2571
2572 width = 4;
2573
2574 bfd_sprintf_vma (abfd, buf, start_offset + section->vma);
2575 if (strlen (buf) >= sizeof (buf))
2576 abort ();
2577
2578 count = 0;
2579 while (buf[count] == '0' && buf[count+1] != '\0')
2580 count++;
2581 count = strlen (buf) - count;
2582 if (count > width)
2583 width = count;
2584
2585 bfd_sprintf_vma (abfd, buf, stop_offset + section->vma - 1);
2586 if (strlen (buf) >= sizeof (buf))
2587 abort ();
2588
2589 count = 0;
2590 while (buf[count] == '0' && buf[count+1] != '\0')
2591 count++;
2592 count = strlen (buf) - count;
2593 if (count > width)
2594 width = count;
2595
2596 for (addr_offset = start_offset;
2597 addr_offset < stop_offset; addr_offset += onaline / opb)
2598 {
2599 bfd_size_type j;
2600
2601 bfd_sprintf_vma (abfd, buf, (addr_offset + section->vma));
2602 count = strlen (buf);
2603 if ((size_t) count >= sizeof (buf))
2604 abort ();
2605
2606 putchar (' ');
2607 while (count < width)
2608 {
2609 putchar ('0');
2610 count++;
2611 }
2612 fputs (buf + count - width, stdout);
2613 putchar (' ');
2614
2615 for (j = addr_offset * opb;
2616 j < addr_offset * opb + onaline; j++)
2617 {
2618 if (j < stop_offset * opb)
2619 printf ("%02x", (unsigned) (data[j]));
2620 else
2621 printf (" ");
2622 if ((j & 3) == 3)
2623 printf (" ");
2624 }
2625
2626 printf (" ");
2627 for (j = addr_offset * opb;
2628 j < addr_offset * opb + onaline; j++)
2629 {
2630 if (j >= stop_offset * opb)
2631 printf (" ");
2632 else
2633 printf ("%c", ISPRINT (data[j]) ? data[j] : '.');
2634 }
2635 putchar ('\n');
2636 }
2637 free (data);
2638 }
2639
2640 /* Actually display the various requested regions. */
2641
2642 static void
2643 dump_data (bfd *abfd)
2644 {
2645 bfd_map_over_sections (abfd, dump_section, NULL);
2646 }
2647
2648 /* Should perhaps share code and display with nm? */
2649
2650 static void
2651 dump_symbols (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean dynamic)
2652 {
2653 asymbol **current;
2654 long max_count;
2655 long count;
2656
2657 if (dynamic)
2658 {
2659 current = dynsyms;
2660 max_count = dynsymcount;
2661 printf ("DYNAMIC SYMBOL TABLE:\n");
2662 }
2663 else
2664 {
2665 current = syms;
2666 max_count = symcount;
2667 printf ("SYMBOL TABLE:\n");
2668 }
2669
2670 if (max_count == 0)
2671 printf (_("no symbols\n"));
2672
2673 for (count = 0; count < max_count; count++)
2674 {
2675 bfd *cur_bfd;
2676
2677 if (*current == NULL)
2678 printf (_("no information for symbol number %ld\n"), count);
2679
2680 else if ((cur_bfd = bfd_asymbol_bfd (*current)) == NULL)
2681 printf (_("could not determine the type of symbol number %ld\n"),
2682 count);
2683
2684 else if (process_section_p ((* current)->section)
2685 && (dump_special_syms
2686 || !bfd_is_target_special_symbol (cur_bfd, *current)))
2687 {
2688 const char *name = (*current)->name;
2689
2690 if (do_demangle && name != NULL && *name != '\0')
2691 {
2692 char *alloc;
2693
2694 /* If we want to demangle the name, we demangle it
2695 here, and temporarily clobber it while calling
2696 bfd_print_symbol. FIXME: This is a gross hack. */
2697 alloc = bfd_demangle (cur_bfd, name, DMGL_ANSI | DMGL_PARAMS);
2698 if (alloc != NULL)
2699 (*current)->name = alloc;
2700 bfd_print_symbol (cur_bfd, stdout, *current,
2701 bfd_print_symbol_all);
2702 if (alloc != NULL)
2703 {
2704 (*current)->name = name;
2705 free (alloc);
2706 }
2707 }
2708 else
2709 bfd_print_symbol (cur_bfd, stdout, *current,
2710 bfd_print_symbol_all);
2711 printf ("\n");
2712 }
2713
2714 current++;
2715 }
2716 printf ("\n\n");
2717 }
2718 \f
2719 static void
2720 dump_reloc_set (bfd *abfd, asection *sec, arelent **relpp, long relcount)
2721 {
2722 arelent **p;
2723 char *last_filename, *last_functionname;
2724 unsigned int last_line;
2725
2726 /* Get column headers lined up reasonably. */
2727 {
2728 static int width;
2729
2730 if (width == 0)
2731 {
2732 char buf[30];
2733
2734 bfd_sprintf_vma (abfd, buf, (bfd_vma) -1);
2735 width = strlen (buf) - 7;
2736 }
2737 printf ("OFFSET %*s TYPE %*s VALUE \n", width, "", 12, "");
2738 }
2739
2740 last_filename = NULL;
2741 last_functionname = NULL;
2742 last_line = 0;
2743
2744 for (p = relpp; relcount && *p != NULL; p++, relcount--)
2745 {
2746 arelent *q = *p;
2747 const char *filename, *functionname;
2748 unsigned int linenumber;
2749 const char *sym_name;
2750 const char *section_name;
2751
2752 if (start_address != (bfd_vma) -1
2753 && q->address < start_address)
2754 continue;
2755 if (stop_address != (bfd_vma) -1
2756 && q->address > stop_address)
2757 continue;
2758
2759 if (with_line_numbers
2760 && sec != NULL
2761 && bfd_find_nearest_line (abfd, sec, syms, q->address,
2762 &filename, &functionname, &linenumber))
2763 {
2764 if (functionname != NULL
2765 && (last_functionname == NULL
2766 || strcmp (functionname, last_functionname) != 0))
2767 {
2768 printf ("%s():\n", functionname);
2769 if (last_functionname != NULL)
2770 free (last_functionname);
2771 last_functionname = xstrdup (functionname);
2772 }
2773
2774 if (linenumber > 0
2775 && (linenumber != last_line
2776 || (filename != NULL
2777 && last_filename != NULL
2778 && strcmp (filename, last_filename) != 0)))
2779 {
2780 printf ("%s:%u\n", filename == NULL ? "???" : filename, linenumber);
2781 last_line = linenumber;
2782 if (last_filename != NULL)
2783 free (last_filename);
2784 if (filename == NULL)
2785 last_filename = NULL;
2786 else
2787 last_filename = xstrdup (filename);
2788 }
2789 }
2790
2791 if (q->sym_ptr_ptr && *q->sym_ptr_ptr)
2792 {
2793 sym_name = (*(q->sym_ptr_ptr))->name;
2794 section_name = (*(q->sym_ptr_ptr))->section->name;
2795 }
2796 else
2797 {
2798 sym_name = NULL;
2799 section_name = NULL;
2800 }
2801
2802 bfd_printf_vma (abfd, q->address);
2803 if (q->howto == NULL)
2804 printf (" *unknown* ");
2805 else if (q->howto->name)
2806 printf (" %-16s ", q->howto->name);
2807 else
2808 printf (" %-16d ", q->howto->type);
2809
2810 if (sym_name)
2811 {
2812 objdump_print_symname (abfd, NULL, *q->sym_ptr_ptr);
2813 }
2814 else
2815 {
2816 if (section_name == NULL)
2817 section_name = "*unknown*";
2818 printf ("[%s]", section_name);
2819 }
2820
2821 if (q->addend)
2822 {
2823 printf ("+0x");
2824 bfd_printf_vma (abfd, q->addend);
2825 }
2826
2827 printf ("\n");
2828 }
2829 }
2830
2831 static void
2832 dump_relocs_in_section (bfd *abfd,
2833 asection *section,
2834 void *dummy ATTRIBUTE_UNUSED)
2835 {
2836 arelent **relpp;
2837 long relcount;
2838 long relsize;
2839
2840 if ( bfd_is_abs_section (section)
2841 || bfd_is_und_section (section)
2842 || bfd_is_com_section (section)
2843 || (! process_section_p (section))
2844 || ((section->flags & SEC_RELOC) == 0))
2845 return;
2846
2847 relsize = bfd_get_reloc_upper_bound (abfd, section);
2848 if (relsize < 0)
2849 bfd_fatal (bfd_get_filename (abfd));
2850
2851 printf ("RELOCATION RECORDS FOR [%s]:", section->name);
2852
2853 if (relsize == 0)
2854 {
2855 printf (" (none)\n\n");
2856 return;
2857 }
2858
2859 relpp = (arelent **) xmalloc (relsize);
2860 relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
2861
2862 if (relcount < 0)
2863 bfd_fatal (bfd_get_filename (abfd));
2864 else if (relcount == 0)
2865 printf (" (none)\n\n");
2866 else
2867 {
2868 printf ("\n");
2869 dump_reloc_set (abfd, section, relpp, relcount);
2870 printf ("\n\n");
2871 }
2872 free (relpp);
2873 }
2874
2875 static void
2876 dump_relocs (bfd *abfd)
2877 {
2878 bfd_map_over_sections (abfd, dump_relocs_in_section, NULL);
2879 }
2880
2881 static void
2882 dump_dynamic_relocs (bfd *abfd)
2883 {
2884 long relsize;
2885 arelent **relpp;
2886 long relcount;
2887
2888 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2889 if (relsize < 0)
2890 bfd_fatal (bfd_get_filename (abfd));
2891
2892 printf ("DYNAMIC RELOCATION RECORDS");
2893
2894 if (relsize == 0)
2895 printf (" (none)\n\n");
2896 else
2897 {
2898 relpp = (arelent **) xmalloc (relsize);
2899 relcount = bfd_canonicalize_dynamic_reloc (abfd, relpp, dynsyms);
2900
2901 if (relcount < 0)
2902 bfd_fatal (bfd_get_filename (abfd));
2903 else if (relcount == 0)
2904 printf (" (none)\n\n");
2905 else
2906 {
2907 printf ("\n");
2908 dump_reloc_set (abfd, NULL, relpp, relcount);
2909 printf ("\n\n");
2910 }
2911 free (relpp);
2912 }
2913 }
2914
2915 /* Creates a table of paths, to search for source files. */
2916
2917 static void
2918 add_include_path (const char *path)
2919 {
2920 if (path[0] == 0)
2921 return;
2922 include_path_count++;
2923 include_paths = (const char **)
2924 xrealloc (include_paths, include_path_count * sizeof (*include_paths));
2925 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2926 if (path[1] == ':' && path[2] == 0)
2927 path = concat (path, ".", (const char *) 0);
2928 #endif
2929 include_paths[include_path_count - 1] = path;
2930 }
2931
2932 static void
2933 adjust_addresses (bfd *abfd ATTRIBUTE_UNUSED,
2934 asection *section,
2935 void *arg)
2936 {
2937 if ((section->flags & SEC_DEBUGGING) == 0)
2938 {
2939 bfd_boolean *has_reloc_p = (bfd_boolean *) arg;
2940 section->vma += adjust_section_vma;
2941 if (*has_reloc_p)
2942 section->lma += adjust_section_vma;
2943 }
2944 }
2945
2946 /* Dump selected contents of ABFD. */
2947
2948 static void
2949 dump_bfd (bfd *abfd)
2950 {
2951 /* If we are adjusting section VMA's, change them all now. Changing
2952 the BFD information is a hack. However, we must do it, or
2953 bfd_find_nearest_line will not do the right thing. */
2954 if (adjust_section_vma != 0)
2955 {
2956 bfd_boolean has_reloc = (abfd->flags & HAS_RELOC);
2957 bfd_map_over_sections (abfd, adjust_addresses, &has_reloc);
2958 }
2959
2960 if (! dump_debugging_tags)
2961 printf (_("\n%s: file format %s\n"), bfd_get_filename (abfd),
2962 abfd->xvec->name);
2963 if (dump_ar_hdrs)
2964 print_arelt_descr (stdout, abfd, TRUE);
2965 if (dump_file_header)
2966 dump_bfd_header (abfd);
2967 if (dump_private_headers)
2968 dump_bfd_private_header (abfd);
2969 if (! dump_debugging_tags)
2970 putchar ('\n');
2971 if (dump_section_headers)
2972 dump_headers (abfd);
2973
2974 if (dump_symtab
2975 || dump_reloc_info
2976 || disassemble
2977 || dump_debugging
2978 || dump_dwarf_section_info)
2979 syms = slurp_symtab (abfd);
2980 if (dump_dynamic_symtab || dump_dynamic_reloc_info
2981 || (disassemble && bfd_get_dynamic_symtab_upper_bound (abfd) > 0))
2982 dynsyms = slurp_dynamic_symtab (abfd);
2983 if (disassemble)
2984 {
2985 synthcount = bfd_get_synthetic_symtab (abfd, symcount, syms,
2986 dynsymcount, dynsyms, &synthsyms);
2987 if (synthcount < 0)
2988 synthcount = 0;
2989 }
2990
2991 if (dump_symtab)
2992 dump_symbols (abfd, FALSE);
2993 if (dump_dynamic_symtab)
2994 dump_symbols (abfd, TRUE);
2995 if (dump_dwarf_section_info)
2996 dump_dwarf (abfd);
2997 if (dump_stab_section_info)
2998 dump_stabs (abfd);
2999 if (dump_reloc_info && ! disassemble)
3000 dump_relocs (abfd);
3001 if (dump_dynamic_reloc_info && ! disassemble)
3002 dump_dynamic_relocs (abfd);
3003 if (dump_section_contents)
3004 dump_data (abfd);
3005 if (disassemble)
3006 disassemble_data (abfd);
3007
3008 if (dump_debugging)
3009 {
3010 void *dhandle;
3011
3012 dhandle = read_debugging_info (abfd, syms, symcount, TRUE);
3013 if (dhandle != NULL)
3014 {
3015 if (!print_debugging_info (stdout, dhandle, abfd, syms,
3016 bfd_demangle,
3017 dump_debugging_tags ? TRUE : FALSE))
3018 {
3019 non_fatal (_("%s: printing debugging information failed"),
3020 bfd_get_filename (abfd));
3021 exit_status = 1;
3022 }
3023 }
3024 /* PR 6483: If there was no STABS or IEEE debug
3025 info in the file, try DWARF instead. */
3026 else if (! dump_dwarf_section_info)
3027 {
3028 dump_dwarf (abfd);
3029 }
3030 }
3031
3032 if (syms)
3033 {
3034 free (syms);
3035 syms = NULL;
3036 }
3037
3038 if (dynsyms)
3039 {
3040 free (dynsyms);
3041 dynsyms = NULL;
3042 }
3043
3044 if (synthsyms)
3045 {
3046 free (synthsyms);
3047 synthsyms = NULL;
3048 }
3049
3050 symcount = 0;
3051 dynsymcount = 0;
3052 synthcount = 0;
3053 }
3054
3055 static void
3056 display_bfd (bfd *abfd)
3057 {
3058 char **matching;
3059
3060 if (bfd_check_format_matches (abfd, bfd_object, &matching))
3061 {
3062 dump_bfd (abfd);
3063 return;
3064 }
3065
3066 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3067 {
3068 nonfatal (bfd_get_filename (abfd));
3069 list_matching_formats (matching);
3070 free (matching);
3071 return;
3072 }
3073
3074 if (bfd_get_error () != bfd_error_file_not_recognized)
3075 {
3076 nonfatal (bfd_get_filename (abfd));
3077 return;
3078 }
3079
3080 if (bfd_check_format_matches (abfd, bfd_core, &matching))
3081 {
3082 dump_bfd (abfd);
3083 return;
3084 }
3085
3086 nonfatal (bfd_get_filename (abfd));
3087
3088 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3089 {
3090 list_matching_formats (matching);
3091 free (matching);
3092 }
3093 }
3094
3095 static void
3096 display_file (char *filename, char *target)
3097 {
3098 bfd *file;
3099 bfd *arfile = NULL;
3100
3101 if (get_file_size (filename) < 1)
3102 {
3103 exit_status = 1;
3104 return;
3105 }
3106
3107 file = bfd_openr (filename, target);
3108 if (file == NULL)
3109 {
3110 nonfatal (filename);
3111 return;
3112 }
3113
3114 /* If the file is an archive, process all of its elements. */
3115 if (bfd_check_format (file, bfd_archive))
3116 {
3117 bfd *last_arfile = NULL;
3118
3119 printf (_("In archive %s:\n"), bfd_get_filename (file));
3120 for (;;)
3121 {
3122 bfd_set_error (bfd_error_no_error);
3123
3124 arfile = bfd_openr_next_archived_file (file, arfile);
3125 if (arfile == NULL)
3126 {
3127 if (bfd_get_error () != bfd_error_no_more_archived_files)
3128 nonfatal (bfd_get_filename (file));
3129 break;
3130 }
3131
3132 display_bfd (arfile);
3133
3134 if (last_arfile != NULL)
3135 bfd_close (last_arfile);
3136 last_arfile = arfile;
3137 }
3138
3139 if (last_arfile != NULL)
3140 bfd_close (last_arfile);
3141 }
3142 else
3143 display_bfd (file);
3144
3145 bfd_close (file);
3146 }
3147 \f
3148 int
3149 main (int argc, char **argv)
3150 {
3151 int c;
3152 char *target = default_target;
3153 bfd_boolean seenflag = FALSE;
3154
3155 #if defined (HAVE_SETLOCALE)
3156 #if defined (HAVE_LC_MESSAGES)
3157 setlocale (LC_MESSAGES, "");
3158 #endif
3159 setlocale (LC_CTYPE, "");
3160 #endif
3161
3162 bindtextdomain (PACKAGE, LOCALEDIR);
3163 textdomain (PACKAGE);
3164
3165 program_name = *argv;
3166 xmalloc_set_program_name (program_name);
3167
3168 START_PROGRESS (program_name, 0);
3169
3170 expandargv (&argc, &argv);
3171
3172 bfd_init ();
3173 set_default_bfd_target ();
3174
3175 while ((c = getopt_long (argc, argv,
3176 "pib:m:M:VvCdDlfFaHhrRtTxsSI:j:wE:zgeGW::",
3177 long_options, (int *) 0))
3178 != EOF)
3179 {
3180 switch (c)
3181 {
3182 case 0:
3183 break; /* We've been given a long option. */
3184 case 'm':
3185 machine = optarg;
3186 break;
3187 case 'M':
3188 if (disassembler_options)
3189 /* Ignore potential memory leak for now. */
3190 disassembler_options = concat (disassembler_options, ",",
3191 optarg, (const char *) NULL);
3192 else
3193 disassembler_options = optarg;
3194 break;
3195 case 'j':
3196 if (only_used == only_size)
3197 {
3198 only_size += 8;
3199 only = (char **) xrealloc (only, only_size * sizeof (char *));
3200 }
3201 only [only_used++] = optarg;
3202 break;
3203 case 'F':
3204 display_file_offsets = TRUE;
3205 break;
3206 case 'l':
3207 with_line_numbers = TRUE;
3208 break;
3209 case 'b':
3210 target = optarg;
3211 break;
3212 case 'C':
3213 do_demangle = TRUE;
3214 if (optarg != NULL)
3215 {
3216 enum demangling_styles style;
3217
3218 style = cplus_demangle_name_to_style (optarg);
3219 if (style == unknown_demangling)
3220 fatal (_("unknown demangling style `%s'"),
3221 optarg);
3222
3223 cplus_demangle_set_style (style);
3224 }
3225 break;
3226 case 'w':
3227 wide_output = TRUE;
3228 break;
3229 case OPTION_ADJUST_VMA:
3230 adjust_section_vma = parse_vma (optarg, "--adjust-vma");
3231 break;
3232 case OPTION_START_ADDRESS:
3233 start_address = parse_vma (optarg, "--start-address");
3234 if ((stop_address != (bfd_vma) -1) && stop_address <= start_address)
3235 fatal (_("error: the start address should be before the end address"));
3236 break;
3237 case OPTION_STOP_ADDRESS:
3238 stop_address = parse_vma (optarg, "--stop-address");
3239 if ((start_address != (bfd_vma) -1) && stop_address <= start_address)
3240 fatal (_("error: the stop address should be after the start address"));
3241 break;
3242 case OPTION_PREFIX:
3243 prefix = optarg;
3244 prefix_length = strlen (prefix);
3245 /* Remove an unnecessary trailing '/' */
3246 while (IS_DIR_SEPARATOR (prefix[prefix_length - 1]))
3247 prefix_length--;
3248 break;
3249 case OPTION_PREFIX_STRIP:
3250 prefix_strip = atoi (optarg);
3251 if (prefix_strip < 0)
3252 fatal (_("error: prefix strip must be non-negative"));
3253 break;
3254 case OPTION_INSN_WIDTH:
3255 insn_width = strtoul (optarg, NULL, 0);
3256 if (insn_width <= 0)
3257 fatal (_("error: instruction width must be positive"));
3258 break;
3259 case 'E':
3260 if (strcmp (optarg, "B") == 0)
3261 endian = BFD_ENDIAN_BIG;
3262 else if (strcmp (optarg, "L") == 0)
3263 endian = BFD_ENDIAN_LITTLE;
3264 else
3265 {
3266 non_fatal (_("unrecognized -E option"));
3267 usage (stderr, 1);
3268 }
3269 break;
3270 case OPTION_ENDIAN:
3271 if (strncmp (optarg, "big", strlen (optarg)) == 0)
3272 endian = BFD_ENDIAN_BIG;
3273 else if (strncmp (optarg, "little", strlen (optarg)) == 0)
3274 endian = BFD_ENDIAN_LITTLE;
3275 else
3276 {
3277 non_fatal (_("unrecognized --endian type `%s'"), optarg);
3278 usage (stderr, 1);
3279 }
3280 break;
3281
3282 case 'f':
3283 dump_file_header = TRUE;
3284 seenflag = TRUE;
3285 break;
3286 case 'i':
3287 formats_info = TRUE;
3288 seenflag = TRUE;
3289 break;
3290 case 'I':
3291 add_include_path (optarg);
3292 break;
3293 case 'p':
3294 dump_private_headers = TRUE;
3295 seenflag = TRUE;
3296 break;
3297 case 'x':
3298 dump_private_headers = TRUE;
3299 dump_symtab = TRUE;
3300 dump_reloc_info = TRUE;
3301 dump_file_header = TRUE;
3302 dump_ar_hdrs = TRUE;
3303 dump_section_headers = TRUE;
3304 seenflag = TRUE;
3305 break;
3306 case 't':
3307 dump_symtab = TRUE;
3308 seenflag = TRUE;
3309 break;
3310 case 'T':
3311 dump_dynamic_symtab = TRUE;
3312 seenflag = TRUE;
3313 break;
3314 case 'd':
3315 disassemble = TRUE;
3316 seenflag = TRUE;
3317 break;
3318 case 'z':
3319 disassemble_zeroes = TRUE;
3320 break;
3321 case 'D':
3322 disassemble = TRUE;
3323 disassemble_all = TRUE;
3324 seenflag = TRUE;
3325 break;
3326 case 'S':
3327 disassemble = TRUE;
3328 with_source_code = TRUE;
3329 seenflag = TRUE;
3330 break;
3331 case 'g':
3332 dump_debugging = 1;
3333 seenflag = TRUE;
3334 break;
3335 case 'e':
3336 dump_debugging = 1;
3337 dump_debugging_tags = 1;
3338 do_demangle = TRUE;
3339 seenflag = TRUE;
3340 break;
3341 case 'W':
3342 dump_dwarf_section_info = TRUE;
3343 seenflag = TRUE;
3344 if (optarg)
3345 dwarf_select_sections_by_letters (optarg);
3346 else
3347 dwarf_select_sections_all ();
3348 break;
3349 case OPTION_DWARF:
3350 dump_dwarf_section_info = TRUE;
3351 seenflag = TRUE;
3352 if (optarg)
3353 dwarf_select_sections_by_names (optarg);
3354 else
3355 dwarf_select_sections_all ();
3356 break;
3357 case 'G':
3358 dump_stab_section_info = TRUE;
3359 seenflag = TRUE;
3360 break;
3361 case 's':
3362 dump_section_contents = TRUE;
3363 seenflag = TRUE;
3364 break;
3365 case 'r':
3366 dump_reloc_info = TRUE;
3367 seenflag = TRUE;
3368 break;
3369 case 'R':
3370 dump_dynamic_reloc_info = TRUE;
3371 seenflag = TRUE;
3372 break;
3373 case 'a':
3374 dump_ar_hdrs = TRUE;
3375 seenflag = TRUE;
3376 break;
3377 case 'h':
3378 dump_section_headers = TRUE;
3379 seenflag = TRUE;
3380 break;
3381 case 'H':
3382 usage (stdout, 0);
3383 seenflag = TRUE;
3384 case 'v':
3385 case 'V':
3386 show_version = TRUE;
3387 seenflag = TRUE;
3388 break;
3389
3390 default:
3391 usage (stderr, 1);
3392 }
3393 }
3394
3395 if (show_version)
3396 print_version ("objdump");
3397
3398 if (!seenflag)
3399 usage (stderr, 2);
3400
3401 if (formats_info)
3402 exit_status = display_info ();
3403 else
3404 {
3405 if (optind == argc)
3406 display_file ("a.out", target);
3407 else
3408 for (; optind < argc;)
3409 display_file (argv[optind++], target);
3410 }
3411
3412 END_PROGRESS (program_name);
3413
3414 return exit_status;
3415 }
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