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[binutils.git] / binutils / objdump.c
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1 /* objdump.c -- dump information about an object file.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
4 Free Software Foundation, Inc.
6 This file is part of GNU Binutils.
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.
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.
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. */
24 /* Objdump overview.
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.
31 The flow of execution is as follows:
33 1. Command line arguments are checked for control switches and the
34 information to be displayed is selected.
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.
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.
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.
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. */
53 #include "sysdep.h"
54 #include "bfd.h"
55 #include "elf-bfd.h"
56 #include "progress.h"
57 #include "bucomm.h"
58 #include "dwarf.h"
59 #include "getopt.h"
60 #include "safe-ctype.h"
61 #include "dis-asm.h"
62 #include "libiberty.h"
63 #include "demangle.h"
64 #include "debug.h"
65 #include "budbg.h"
67 #ifdef HAVE_MMAP
68 #include <sys/mman.h>
69 #endif
71 #include <sys/stat.h>
73 /* Internal headers for the ELF .stab-dump code - sorry. */
74 #define BYTES_IN_WORD 32
75 #include "aout/aout64.h"
77 /* Exit status. */
78 static int exit_status = 0;
80 static char *default_target = NULL; /* Default at runtime. */
82 /* The following variables are set based on arguments passed on the
83 command line. */
84 static int show_version = 0; /* Show the version number. */
85 static int dump_section_contents; /* -s */
86 static int dump_section_headers; /* -h */
87 static bfd_boolean dump_file_header; /* -f */
88 static int dump_symtab; /* -t */
89 static int dump_dynamic_symtab; /* -T */
90 static int dump_reloc_info; /* -r */
91 static int dump_dynamic_reloc_info; /* -R */
92 static int dump_ar_hdrs; /* -a */
93 static int dump_private_headers; /* -p */
94 static int prefix_addresses; /* --prefix-addresses */
95 static int with_line_numbers; /* -l */
96 static bfd_boolean with_source_code; /* -S */
97 static int show_raw_insn; /* --show-raw-insn */
98 static int dump_dwarf_section_info; /* --dwarf */
99 static int dump_stab_section_info; /* --stabs */
100 static int do_demangle; /* -C, --demangle */
101 static bfd_boolean disassemble; /* -d */
102 static bfd_boolean disassemble_all; /* -D */
103 static int disassemble_zeroes; /* --disassemble-zeroes */
104 static bfd_boolean formats_info; /* -i */
105 static int wide_output; /* -w */
106 static bfd_vma start_address = (bfd_vma) -1; /* --start-address */
107 static bfd_vma stop_address = (bfd_vma) -1; /* --stop-address */
108 static int dump_debugging; /* --debugging */
109 static int dump_debugging_tags; /* --debugging-tags */
110 static int dump_special_syms = 0; /* --special-syms */
111 static bfd_vma adjust_section_vma = 0; /* --adjust-vma */
112 static int file_start_context = 0; /* --file-start-context */
113 static bfd_boolean display_file_offsets;/* -F */
115 /* Pointer to an array of section names provided by
116 one or more "-j secname" command line options. */
117 static char **only;
118 /* The total number of slots in the only[] array. */
119 static size_t only_size = 0;
120 /* The number of occupied slots in the only[] array. */
121 static size_t only_used = 0;
123 /* Variables for handling include file path table. */
124 static const char **include_paths;
125 static int include_path_count;
127 /* Extra info to pass to the section disassembler and address printing
128 function. */
129 struct objdump_disasm_info
131 bfd * abfd;
132 asection * sec;
133 bfd_boolean require_sec;
134 arelent ** dynrelbuf;
135 long dynrelcount;
136 disassembler_ftype disassemble_fn;
137 arelent * reloc;
140 /* Architecture to disassemble for, or default if NULL. */
141 static char *machine = NULL;
143 /* Target specific options to the disassembler. */
144 static char *disassembler_options = NULL;
146 /* Endianness to disassemble for, or default if BFD_ENDIAN_UNKNOWN. */
147 static enum bfd_endian endian = BFD_ENDIAN_UNKNOWN;
149 /* The symbol table. */
150 static asymbol **syms;
152 /* Number of symbols in `syms'. */
153 static long symcount = 0;
155 /* The sorted symbol table. */
156 static asymbol **sorted_syms;
158 /* Number of symbols in `sorted_syms'. */
159 static long sorted_symcount = 0;
161 /* The dynamic symbol table. */
162 static asymbol **dynsyms;
164 /* The synthetic symbol table. */
165 static asymbol *synthsyms;
166 static long synthcount = 0;
168 /* Number of symbols in `dynsyms'. */
169 static long dynsymcount = 0;
171 static bfd_byte *stabs;
172 static bfd_size_type stab_size;
174 static char *strtab;
175 static bfd_size_type stabstr_size;
177 static bfd_boolean is_relocatable = FALSE;
179 static void
180 usage (FILE *stream, int status)
182 fprintf (stream, _("Usage: %s <option(s)> <file(s)>\n"), program_name);
183 fprintf (stream, _(" Display information from object <file(s)>.\n"));
184 fprintf (stream, _(" At least one of the following switches must be given:\n"));
185 fprintf (stream, _("\
186 -a, --archive-headers Display archive header information\n\
187 -f, --file-headers Display the contents of the overall file header\n\
188 -p, --private-headers Display object format specific file header contents\n\
189 -h, --[section-]headers Display the contents of the section headers\n\
190 -x, --all-headers Display the contents of all headers\n\
191 -d, --disassemble Display assembler contents of executable sections\n\
192 -D, --disassemble-all Display assembler contents of all sections\n\
193 -S, --source Intermix source code with disassembly\n\
194 -s, --full-contents Display the full contents of all sections requested\n\
195 -g, --debugging Display debug information in object file\n\
196 -e, --debugging-tags Display debug information using ctags style\n\
197 -G, --stabs Display (in raw form) any STABS info in the file\n\
198 -W, --dwarf Display DWARF info in the file\n\
199 -t, --syms Display the contents of the symbol table(s)\n\
200 -T, --dynamic-syms Display the contents of the dynamic symbol table\n\
201 -r, --reloc Display the relocation entries in the file\n\
202 -R, --dynamic-reloc Display the dynamic relocation entries in the file\n\
203 @<file> Read options from <file>\n\
204 -v, --version Display this program's version number\n\
205 -i, --info List object formats and architectures supported\n\
206 -H, --help Display this information\n\
207 "));
208 if (status != 2)
210 fprintf (stream, _("\n The following switches are optional:\n"));
211 fprintf (stream, _("\
212 -b, --target=BFDNAME Specify the target object format as BFDNAME\n\
213 -m, --architecture=MACHINE Specify the target architecture as MACHINE\n\
214 -j, --section=NAME Only display information for section NAME\n\
215 -M, --disassembler-options=OPT Pass text OPT on to the disassembler\n\
216 -EB --endian=big Assume big endian format when disassembling\n\
217 -EL --endian=little Assume little endian format when disassembling\n\
218 --file-start-context Include context from start of file (with -S)\n\
219 -I, --include=DIR Add DIR to search list for source files\n\
220 -l, --line-numbers Include line numbers and filenames in output\n\
221 -F, --file-offsets Include file offsets when displaying information\n\
222 -C, --demangle[=STYLE] Decode mangled/processed symbol names\n\
223 The STYLE, if specified, can be `auto', `gnu',\n\
224 `lucid', `arm', `hp', `edg', `gnu-v3', `java'\n\
225 or `gnat'\n\
226 -w, --wide Format output for more than 80 columns\n\
227 -z, --disassemble-zeroes Do not skip blocks of zeroes when disassembling\n\
228 --start-address=ADDR Only process data whose address is >= ADDR\n\
229 --stop-address=ADDR Only process data whose address is <= ADDR\n\
230 --prefix-addresses Print complete address alongside disassembly\n\
231 --[no-]show-raw-insn Display hex alongside symbolic disassembly\n\
232 --adjust-vma=OFFSET Add OFFSET to all displayed section addresses\n\
233 --special-syms Include special symbols in symbol dumps\n\
234 \n"));
235 list_supported_targets (program_name, stream);
236 list_supported_architectures (program_name, stream);
238 disassembler_usage (stream);
240 if (REPORT_BUGS_TO[0] && status == 0)
241 fprintf (stream, _("Report bugs to %s.\n"), REPORT_BUGS_TO);
242 exit (status);
245 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
246 enum option_values
248 OPTION_ENDIAN=150,
249 OPTION_START_ADDRESS,
250 OPTION_STOP_ADDRESS,
251 OPTION_ADJUST_VMA
254 static struct option long_options[]=
256 {"adjust-vma", required_argument, NULL, OPTION_ADJUST_VMA},
257 {"all-headers", no_argument, NULL, 'x'},
258 {"private-headers", no_argument, NULL, 'p'},
259 {"architecture", required_argument, NULL, 'm'},
260 {"archive-headers", no_argument, NULL, 'a'},
261 {"debugging", no_argument, NULL, 'g'},
262 {"debugging-tags", no_argument, NULL, 'e'},
263 {"demangle", optional_argument, NULL, 'C'},
264 {"disassemble", no_argument, NULL, 'd'},
265 {"disassemble-all", no_argument, NULL, 'D'},
266 {"disassembler-options", required_argument, NULL, 'M'},
267 {"disassemble-zeroes", no_argument, NULL, 'z'},
268 {"dynamic-reloc", no_argument, NULL, 'R'},
269 {"dynamic-syms", no_argument, NULL, 'T'},
270 {"endian", required_argument, NULL, OPTION_ENDIAN},
271 {"file-headers", no_argument, NULL, 'f'},
272 {"file-offsets", no_argument, NULL, 'F'},
273 {"file-start-context", no_argument, &file_start_context, 1},
274 {"full-contents", no_argument, NULL, 's'},
275 {"headers", no_argument, NULL, 'h'},
276 {"help", no_argument, NULL, 'H'},
277 {"info", no_argument, NULL, 'i'},
278 {"line-numbers", no_argument, NULL, 'l'},
279 {"no-show-raw-insn", no_argument, &show_raw_insn, -1},
280 {"prefix-addresses", no_argument, &prefix_addresses, 1},
281 {"reloc", no_argument, NULL, 'r'},
282 {"section", required_argument, NULL, 'j'},
283 {"section-headers", no_argument, NULL, 'h'},
284 {"show-raw-insn", no_argument, &show_raw_insn, 1},
285 {"source", no_argument, NULL, 'S'},
286 {"special-syms", no_argument, &dump_special_syms, 1},
287 {"include", required_argument, NULL, 'I'},
288 {"dwarf", no_argument, NULL, 'W'},
289 {"stabs", no_argument, NULL, 'G'},
290 {"start-address", required_argument, NULL, OPTION_START_ADDRESS},
291 {"stop-address", required_argument, NULL, OPTION_STOP_ADDRESS},
292 {"syms", no_argument, NULL, 't'},
293 {"target", required_argument, NULL, 'b'},
294 {"version", no_argument, NULL, 'V'},
295 {"wide", no_argument, NULL, 'w'},
296 {0, no_argument, 0, 0}
299 static void
300 nonfatal (const char *msg)
302 bfd_nonfatal (msg);
303 exit_status = 1;
306 static void
307 dump_section_header (bfd *abfd, asection *section,
308 void *ignored ATTRIBUTE_UNUSED)
310 char *comma = "";
311 unsigned int opb = bfd_octets_per_byte (abfd);
313 /* Ignore linker created section. See elfNN_ia64_object_p in
314 bfd/elfxx-ia64.c. */
315 if (section->flags & SEC_LINKER_CREATED)
316 return;
318 printf ("%3d %-13s %08lx ", section->index,
319 bfd_get_section_name (abfd, section),
320 (unsigned long) bfd_section_size (abfd, section) / opb);
321 bfd_printf_vma (abfd, bfd_get_section_vma (abfd, section));
322 printf (" ");
323 bfd_printf_vma (abfd, section->lma);
324 printf (" %08lx 2**%u", (unsigned long) section->filepos,
325 bfd_get_section_alignment (abfd, section));
326 if (! wide_output)
327 printf ("\n ");
328 printf (" ");
330 #define PF(x, y) \
331 if (section->flags & x) { printf ("%s%s", comma, y); comma = ", "; }
333 PF (SEC_HAS_CONTENTS, "CONTENTS");
334 PF (SEC_ALLOC, "ALLOC");
335 PF (SEC_CONSTRUCTOR, "CONSTRUCTOR");
336 PF (SEC_LOAD, "LOAD");
337 PF (SEC_RELOC, "RELOC");
338 PF (SEC_READONLY, "READONLY");
339 PF (SEC_CODE, "CODE");
340 PF (SEC_DATA, "DATA");
341 PF (SEC_ROM, "ROM");
342 PF (SEC_DEBUGGING, "DEBUGGING");
343 PF (SEC_NEVER_LOAD, "NEVER_LOAD");
344 PF (SEC_EXCLUDE, "EXCLUDE");
345 PF (SEC_SORT_ENTRIES, "SORT_ENTRIES");
346 if (bfd_get_arch (abfd) == bfd_arch_tic54x)
348 PF (SEC_TIC54X_BLOCK, "BLOCK");
349 PF (SEC_TIC54X_CLINK, "CLINK");
351 PF (SEC_SMALL_DATA, "SMALL_DATA");
352 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
353 PF (SEC_COFF_SHARED, "SHARED");
354 PF (SEC_THREAD_LOCAL, "THREAD_LOCAL");
355 PF (SEC_GROUP, "GROUP");
357 if ((section->flags & SEC_LINK_ONCE) != 0)
359 const char *ls;
360 struct coff_comdat_info *comdat;
362 switch (section->flags & SEC_LINK_DUPLICATES)
364 default:
365 abort ();
366 case SEC_LINK_DUPLICATES_DISCARD:
367 ls = "LINK_ONCE_DISCARD";
368 break;
369 case SEC_LINK_DUPLICATES_ONE_ONLY:
370 ls = "LINK_ONCE_ONE_ONLY";
371 break;
372 case SEC_LINK_DUPLICATES_SAME_SIZE:
373 ls = "LINK_ONCE_SAME_SIZE";
374 break;
375 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
376 ls = "LINK_ONCE_SAME_CONTENTS";
377 break;
379 printf ("%s%s", comma, ls);
381 comdat = bfd_coff_get_comdat_section (abfd, section);
382 if (comdat != NULL)
383 printf (" (COMDAT %s %ld)", comdat->name, comdat->symbol);
385 comma = ", ";
388 printf ("\n");
389 #undef PF
392 static void
393 dump_headers (bfd *abfd)
395 printf (_("Sections:\n"));
397 #ifndef BFD64
398 printf (_("Idx Name Size VMA LMA File off Algn"));
399 #else
400 /* With BFD64, non-ELF returns -1 and wants always 64 bit addresses. */
401 if (bfd_get_arch_size (abfd) == 32)
402 printf (_("Idx Name Size VMA LMA File off Algn"));
403 else
404 printf (_("Idx Name Size VMA LMA File off Algn"));
405 #endif
407 if (wide_output)
408 printf (_(" Flags"));
409 if (abfd->flags & HAS_LOAD_PAGE)
410 printf (_(" Pg"));
411 printf ("\n");
413 bfd_map_over_sections (abfd, dump_section_header, NULL);
416 static asymbol **
417 slurp_symtab (bfd *abfd)
419 asymbol **sy = NULL;
420 long storage;
422 if (!(bfd_get_file_flags (abfd) & HAS_SYMS))
424 symcount = 0;
425 return NULL;
428 storage = bfd_get_symtab_upper_bound (abfd);
429 if (storage < 0)
430 bfd_fatal (bfd_get_filename (abfd));
431 if (storage)
432 sy = xmalloc (storage);
434 symcount = bfd_canonicalize_symtab (abfd, sy);
435 if (symcount < 0)
436 bfd_fatal (bfd_get_filename (abfd));
437 return sy;
440 /* Read in the dynamic symbols. */
442 static asymbol **
443 slurp_dynamic_symtab (bfd *abfd)
445 asymbol **sy = NULL;
446 long storage;
448 storage = bfd_get_dynamic_symtab_upper_bound (abfd);
449 if (storage < 0)
451 if (!(bfd_get_file_flags (abfd) & DYNAMIC))
453 non_fatal (_("%s: not a dynamic object"), bfd_get_filename (abfd));
454 dynsymcount = 0;
455 return NULL;
458 bfd_fatal (bfd_get_filename (abfd));
460 if (storage)
461 sy = xmalloc (storage);
463 dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, sy);
464 if (dynsymcount < 0)
465 bfd_fatal (bfd_get_filename (abfd));
466 return sy;
469 /* Filter out (in place) symbols that are useless for disassembly.
470 COUNT is the number of elements in SYMBOLS.
471 Return the number of useful symbols. */
473 static long
474 remove_useless_symbols (asymbol **symbols, long count)
476 asymbol **in_ptr = symbols, **out_ptr = symbols;
478 while (--count >= 0)
480 asymbol *sym = *in_ptr++;
482 if (sym->name == NULL || sym->name[0] == '\0')
483 continue;
484 if (sym->flags & (BSF_DEBUGGING | BSF_SECTION_SYM))
485 continue;
486 if (bfd_is_und_section (sym->section)
487 || bfd_is_com_section (sym->section))
488 continue;
490 *out_ptr++ = sym;
492 return out_ptr - symbols;
495 /* Sort symbols into value order. */
497 static int
498 compare_symbols (const void *ap, const void *bp)
500 const asymbol *a = * (const asymbol **) ap;
501 const asymbol *b = * (const asymbol **) bp;
502 const char *an;
503 const char *bn;
504 size_t anl;
505 size_t bnl;
506 bfd_boolean af;
507 bfd_boolean bf;
508 flagword aflags;
509 flagword bflags;
511 if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
512 return 1;
513 else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
514 return -1;
516 if (a->section > b->section)
517 return 1;
518 else if (a->section < b->section)
519 return -1;
521 an = bfd_asymbol_name (a);
522 bn = bfd_asymbol_name (b);
523 anl = strlen (an);
524 bnl = strlen (bn);
526 /* The symbols gnu_compiled and gcc2_compiled convey no real
527 information, so put them after other symbols with the same value. */
528 af = (strstr (an, "gnu_compiled") != NULL
529 || strstr (an, "gcc2_compiled") != NULL);
530 bf = (strstr (bn, "gnu_compiled") != NULL
531 || strstr (bn, "gcc2_compiled") != NULL);
533 if (af && ! bf)
534 return 1;
535 if (! af && bf)
536 return -1;
538 /* We use a heuristic for the file name, to try to sort it after
539 more useful symbols. It may not work on non Unix systems, but it
540 doesn't really matter; the only difference is precisely which
541 symbol names get printed. */
543 #define file_symbol(s, sn, snl) \
544 (((s)->flags & BSF_FILE) != 0 \
545 || ((sn)[(snl) - 2] == '.' \
546 && ((sn)[(snl) - 1] == 'o' \
547 || (sn)[(snl) - 1] == 'a')))
549 af = file_symbol (a, an, anl);
550 bf = file_symbol (b, bn, bnl);
552 if (af && ! bf)
553 return 1;
554 if (! af && bf)
555 return -1;
557 /* Try to sort global symbols before local symbols before function
558 symbols before debugging symbols. */
560 aflags = a->flags;
561 bflags = b->flags;
563 if ((aflags & BSF_DEBUGGING) != (bflags & BSF_DEBUGGING))
565 if ((aflags & BSF_DEBUGGING) != 0)
566 return 1;
567 else
568 return -1;
570 if ((aflags & BSF_FUNCTION) != (bflags & BSF_FUNCTION))
572 if ((aflags & BSF_FUNCTION) != 0)
573 return -1;
574 else
575 return 1;
577 if ((aflags & BSF_LOCAL) != (bflags & BSF_LOCAL))
579 if ((aflags & BSF_LOCAL) != 0)
580 return 1;
581 else
582 return -1;
584 if ((aflags & BSF_GLOBAL) != (bflags & BSF_GLOBAL))
586 if ((aflags & BSF_GLOBAL) != 0)
587 return -1;
588 else
589 return 1;
592 /* Symbols that start with '.' might be section names, so sort them
593 after symbols that don't start with '.'. */
594 if (an[0] == '.' && bn[0] != '.')
595 return 1;
596 if (an[0] != '.' && bn[0] == '.')
597 return -1;
599 /* Finally, if we can't distinguish them in any other way, try to
600 get consistent results by sorting the symbols by name. */
601 return strcmp (an, bn);
604 /* Sort relocs into address order. */
606 static int
607 compare_relocs (const void *ap, const void *bp)
609 const arelent *a = * (const arelent **) ap;
610 const arelent *b = * (const arelent **) bp;
612 if (a->address > b->address)
613 return 1;
614 else if (a->address < b->address)
615 return -1;
617 /* So that associated relocations tied to the same address show up
618 in the correct order, we don't do any further sorting. */
619 if (a > b)
620 return 1;
621 else if (a < b)
622 return -1;
623 else
624 return 0;
627 /* Print an address (VMA) to the output stream in INFO.
628 If SKIP_ZEROES is TRUE, omit leading zeroes. */
630 static void
631 objdump_print_value (bfd_vma vma, struct disassemble_info *info,
632 bfd_boolean skip_zeroes)
634 char buf[30];
635 char *p;
636 struct objdump_disasm_info *aux;
638 aux = (struct objdump_disasm_info *) info->application_data;
639 bfd_sprintf_vma (aux->abfd, buf, vma);
640 if (! skip_zeroes)
641 p = buf;
642 else
644 for (p = buf; *p == '0'; ++p)
646 if (*p == '\0')
647 --p;
649 (*info->fprintf_func) (info->stream, "%s", p);
652 /* Print the name of a symbol. */
654 static void
655 objdump_print_symname (bfd *abfd, struct disassemble_info *info,
656 asymbol *sym)
658 char *alloc;
659 const char *name;
661 alloc = NULL;
662 name = bfd_asymbol_name (sym);
663 if (do_demangle && name[0] != '\0')
665 /* Demangle the name. */
666 alloc = bfd_demangle (abfd, name, DMGL_ANSI | DMGL_PARAMS);
667 if (alloc != NULL)
668 name = alloc;
671 if (info != NULL)
672 (*info->fprintf_func) (info->stream, "%s", name);
673 else
674 printf ("%s", name);
676 if (alloc != NULL)
677 free (alloc);
680 /* Locate a symbol given a bfd and a section (from INFO->application_data),
681 and a VMA. If INFO->application_data->require_sec is TRUE, then always
682 require the symbol to be in the section. Returns NULL if there is no
683 suitable symbol. If PLACE is not NULL, then *PLACE is set to the index
684 of the symbol in sorted_syms. */
686 static asymbol *
687 find_symbol_for_address (bfd_vma vma,
688 struct disassemble_info *info,
689 long *place)
691 /* @@ Would it speed things up to cache the last two symbols returned,
692 and maybe their address ranges? For many processors, only one memory
693 operand can be present at a time, so the 2-entry cache wouldn't be
694 constantly churned by code doing heavy memory accesses. */
696 /* Indices in `sorted_syms'. */
697 long min = 0;
698 long max = sorted_symcount;
699 long thisplace;
700 struct objdump_disasm_info *aux;
701 bfd *abfd;
702 asection *sec;
703 unsigned int opb;
704 bfd_boolean want_section;
706 if (sorted_symcount < 1)
707 return NULL;
709 aux = (struct objdump_disasm_info *) info->application_data;
710 abfd = aux->abfd;
711 sec = aux->sec;
712 opb = bfd_octets_per_byte (abfd);
714 /* Perform a binary search looking for the closest symbol to the
715 required value. We are searching the range (min, max]. */
716 while (min + 1 < max)
718 asymbol *sym;
720 thisplace = (max + min) / 2;
721 sym = sorted_syms[thisplace];
723 if (bfd_asymbol_value (sym) > vma)
724 max = thisplace;
725 else if (bfd_asymbol_value (sym) < vma)
726 min = thisplace;
727 else
729 min = thisplace;
730 break;
734 /* The symbol we want is now in min, the low end of the range we
735 were searching. If there are several symbols with the same
736 value, we want the first one. */
737 thisplace = min;
738 while (thisplace > 0
739 && (bfd_asymbol_value (sorted_syms[thisplace])
740 == bfd_asymbol_value (sorted_syms[thisplace - 1])))
741 --thisplace;
743 /* Prefer a symbol in the current section if we have multple symbols
744 with the same value, as can occur with overlays or zero size
745 sections. */
746 min = thisplace;
747 while (min < max
748 && (bfd_asymbol_value (sorted_syms[min])
749 == bfd_asymbol_value (sorted_syms[thisplace])))
751 if (sorted_syms[min]->section == sec
752 && info->symbol_is_valid (sorted_syms[min], info))
754 thisplace = min;
756 if (place != NULL)
757 *place = thisplace;
759 return sorted_syms[thisplace];
761 ++min;
764 /* If the file is relocatable, and the symbol could be from this
765 section, prefer a symbol from this section over symbols from
766 others, even if the other symbol's value might be closer.
768 Note that this may be wrong for some symbol references if the
769 sections have overlapping memory ranges, but in that case there's
770 no way to tell what's desired without looking at the relocation
771 table.
773 Also give the target a chance to reject symbols. */
774 want_section = (aux->require_sec
775 || ((abfd->flags & HAS_RELOC) != 0
776 && vma >= bfd_get_section_vma (abfd, sec)
777 && vma < (bfd_get_section_vma (abfd, sec)
778 + bfd_section_size (abfd, sec) / opb)));
779 if ((sorted_syms[thisplace]->section != sec && want_section)
780 || !info->symbol_is_valid (sorted_syms[thisplace], info))
782 long i;
783 long newplace = sorted_symcount;
785 for (i = min - 1; i >= 0; i--)
787 if ((sorted_syms[i]->section == sec || !want_section)
788 && info->symbol_is_valid (sorted_syms[i], info))
790 if (newplace == sorted_symcount)
791 newplace = i;
793 if (bfd_asymbol_value (sorted_syms[i])
794 != bfd_asymbol_value (sorted_syms[newplace]))
795 break;
797 /* Remember this symbol and keep searching until we reach
798 an earlier address. */
799 newplace = i;
803 if (newplace != sorted_symcount)
804 thisplace = newplace;
805 else
807 /* We didn't find a good symbol with a smaller value.
808 Look for one with a larger value. */
809 for (i = thisplace + 1; i < sorted_symcount; i++)
811 if ((sorted_syms[i]->section == sec || !want_section)
812 && info->symbol_is_valid (sorted_syms[i], info))
814 thisplace = i;
815 break;
820 if ((sorted_syms[thisplace]->section != sec && want_section)
821 || !info->symbol_is_valid (sorted_syms[thisplace], info))
822 /* There is no suitable symbol. */
823 return NULL;
826 if (place != NULL)
827 *place = thisplace;
829 return sorted_syms[thisplace];
832 /* Print an address and the offset to the nearest symbol. */
834 static void
835 objdump_print_addr_with_sym (bfd *abfd, asection *sec, asymbol *sym,
836 bfd_vma vma, struct disassemble_info *info,
837 bfd_boolean skip_zeroes)
839 objdump_print_value (vma, info, skip_zeroes);
841 if (sym == NULL)
843 bfd_vma secaddr;
845 (*info->fprintf_func) (info->stream, " <%s",
846 bfd_get_section_name (abfd, sec));
847 secaddr = bfd_get_section_vma (abfd, sec);
848 if (vma < secaddr)
850 (*info->fprintf_func) (info->stream, "-0x");
851 objdump_print_value (secaddr - vma, info, TRUE);
853 else if (vma > secaddr)
855 (*info->fprintf_func) (info->stream, "+0x");
856 objdump_print_value (vma - secaddr, info, TRUE);
858 (*info->fprintf_func) (info->stream, ">");
860 else
862 (*info->fprintf_func) (info->stream, " <");
863 objdump_print_symname (abfd, info, sym);
864 if (bfd_asymbol_value (sym) > vma)
866 (*info->fprintf_func) (info->stream, "-0x");
867 objdump_print_value (bfd_asymbol_value (sym) - vma, info, TRUE);
869 else if (vma > bfd_asymbol_value (sym))
871 (*info->fprintf_func) (info->stream, "+0x");
872 objdump_print_value (vma - bfd_asymbol_value (sym), info, TRUE);
874 (*info->fprintf_func) (info->stream, ">");
877 if (display_file_offsets)
878 info->fprintf_func (info->stream, _(" (File Offset: 0x%lx)"),
879 (long int)(sec->filepos + (vma - sec->vma)));
882 /* Print an address (VMA), symbolically if possible.
883 If SKIP_ZEROES is TRUE, don't output leading zeroes. */
885 static void
886 objdump_print_addr (bfd_vma vma,
887 struct disassemble_info *info,
888 bfd_boolean skip_zeroes)
890 struct objdump_disasm_info *aux;
891 asymbol *sym = NULL;
892 bfd_boolean skip_find = FALSE;
894 aux = (struct objdump_disasm_info *) info->application_data;
896 if (sorted_symcount < 1)
898 (*info->fprintf_func) (info->stream, "0x");
899 objdump_print_value (vma, info, skip_zeroes);
901 if (display_file_offsets)
902 info->fprintf_func (info->stream, _(" (File Offset: 0x%lx)"),
903 (long int)(aux->sec->filepos + (vma - aux->sec->vma)));
904 return;
907 if (aux->reloc != NULL
908 && aux->reloc->sym_ptr_ptr != NULL
909 && * aux->reloc->sym_ptr_ptr != NULL)
911 sym = * aux->reloc->sym_ptr_ptr;
913 /* Adjust the vma to the reloc. */
914 vma += bfd_asymbol_value (sym);
916 if (bfd_is_und_section (bfd_get_section (sym)))
917 skip_find = TRUE;
920 if (!skip_find)
921 sym = find_symbol_for_address (vma, info, NULL);
923 objdump_print_addr_with_sym (aux->abfd, aux->sec, sym, vma, info,
924 skip_zeroes);
927 /* Print VMA to INFO. This function is passed to the disassembler
928 routine. */
930 static void
931 objdump_print_address (bfd_vma vma, struct disassemble_info *info)
933 objdump_print_addr (vma, info, ! prefix_addresses);
936 /* Determine if the given address has a symbol associated with it. */
938 static int
939 objdump_symbol_at_address (bfd_vma vma, struct disassemble_info * info)
941 asymbol * sym;
943 sym = find_symbol_for_address (vma, info, NULL);
945 return (sym != NULL && (bfd_asymbol_value (sym) == vma));
948 /* Hold the last function name and the last line number we displayed
949 in a disassembly. */
951 static char *prev_functionname;
952 static unsigned int prev_line;
954 /* We keep a list of all files that we have seen when doing a
955 disassembly with source, so that we know how much of the file to
956 display. This can be important for inlined functions. */
958 struct print_file_list
960 struct print_file_list *next;
961 const char *filename;
962 const char *modname;
963 const char *map;
964 size_t mapsize;
965 const char **linemap;
966 unsigned maxline;
967 unsigned last_line;
968 int first;
971 static struct print_file_list *print_files;
973 /* The number of preceding context lines to show when we start
974 displaying a file for the first time. */
976 #define SHOW_PRECEDING_CONTEXT_LINES (5)
978 /* Read a complete file into memory. */
980 static const char *
981 slurp_file (const char *fn, size_t *size)
983 #ifdef HAVE_MMAP
984 int ps = getpagesize ();
985 size_t msize;
986 #endif
987 const char *map;
988 struct stat st;
989 int fd = open (fn, O_RDONLY | O_BINARY);
991 if (fd < 0)
992 return NULL;
993 if (fstat (fd, &st) < 0)
994 return NULL;
995 *size = st.st_size;
996 #ifdef HAVE_MMAP
997 msize = (*size + ps - 1) & ~(ps - 1);
998 map = mmap (NULL, msize, PROT_READ, MAP_SHARED, fd, 0);
999 if (map != (char *)-1L)
1001 close(fd);
1002 return map;
1004 #endif
1005 map = malloc (*size);
1006 if (!map || (size_t) read (fd, (char *)map, *size) != *size)
1008 free ((void *)map);
1009 map = NULL;
1011 close (fd);
1012 return map;
1015 #define line_map_decrease 5
1017 /* Precompute array of lines for a mapped file. */
1019 static const char **
1020 index_file (const char *map, size_t size, unsigned int *maxline)
1022 const char *p, *lstart, *end;
1023 int chars_per_line = 45; /* First iteration will use 40. */
1024 unsigned int lineno;
1025 const char **linemap = NULL;
1026 unsigned long line_map_size = 0;
1028 lineno = 0;
1029 lstart = map;
1030 end = map + size;
1032 for (p = map; p < end; p++)
1034 if (*p == '\n')
1036 if (p + 1 < end && p[1] == '\r')
1037 p++;
1039 else if (*p == '\r')
1041 if (p + 1 < end && p[1] == '\n')
1042 p++;
1044 else
1045 continue;
1047 /* End of line found. */
1049 if (linemap == NULL || line_map_size < lineno + 1)
1051 unsigned long newsize;
1053 chars_per_line -= line_map_decrease;
1054 if (chars_per_line <= 1)
1055 chars_per_line = 1;
1056 line_map_size = size / chars_per_line + 1;
1057 if (line_map_size < lineno + 1)
1058 line_map_size = lineno + 1;
1059 newsize = line_map_size * sizeof (char *);
1060 linemap = xrealloc (linemap, newsize);
1063 linemap[lineno++] = lstart;
1064 lstart = p + 1;
1067 *maxline = lineno;
1068 return linemap;
1071 /* Tries to open MODNAME, and if successful adds a node to print_files
1072 linked list and returns that node. Returns NULL on failure. */
1074 static struct print_file_list *
1075 try_print_file_open (const char *origname, const char *modname)
1077 struct print_file_list *p;
1079 p = xmalloc (sizeof (struct print_file_list));
1081 p->map = slurp_file (modname, &p->mapsize);
1082 if (p->map == NULL)
1084 free (p);
1085 return NULL;
1088 p->linemap = index_file (p->map, p->mapsize, &p->maxline);
1089 p->last_line = 0;
1090 p->filename = origname;
1091 p->modname = modname;
1092 p->next = print_files;
1093 p->first = 1;
1094 print_files = p;
1095 return p;
1098 /* If the the source file, as described in the symtab, is not found
1099 try to locate it in one of the paths specified with -I
1100 If found, add location to print_files linked list. */
1102 static struct print_file_list *
1103 update_source_path (const char *filename)
1105 struct print_file_list *p;
1106 const char *fname;
1107 int i;
1109 if (filename == NULL)
1110 return NULL;
1112 p = try_print_file_open (filename, filename);
1113 if (p != NULL)
1114 return p;
1116 if (include_path_count == 0)
1117 return NULL;
1119 /* Get the name of the file. */
1120 fname = strrchr (filename, '/');
1121 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
1123 /* We could have a mixed forward/back slash case. */
1124 char *backslash = strrchr (filename, '\\');
1125 if (fname == NULL || (backslash != NULL && backslash > fname))
1126 fname = backslash;
1127 if (fname == NULL && filename[0] != '\0' && filename[1] == ':')
1128 fname = filename + 1;
1130 #endif
1131 if (fname == NULL)
1132 fname = filename;
1133 else
1134 ++fname;
1136 /* If file exists under a new path, we need to add it to the list
1137 so that show_line knows about it. */
1138 for (i = 0; i < include_path_count; i++)
1140 char *modname = concat (include_paths[i], "/", fname, (const char *) 0);
1142 p = try_print_file_open (filename, modname);
1143 if (p)
1144 return p;
1146 free (modname);
1149 return NULL;
1152 /* Print a source file line. */
1154 static void
1155 print_line (struct print_file_list *p, unsigned int line)
1157 const char *l;
1158 size_t len;
1160 --line;
1161 if (line >= p->maxline)
1162 return;
1163 l = p->linemap [line];
1164 /* Test fwrite return value to quiet glibc warning. */
1165 len = strcspn (l, "\n\r");
1166 if (len == 0 || fwrite (l, len, 1, stdout) == 1)
1167 putchar ('\n');
1170 /* Print a range of source code lines. */
1172 static void
1173 dump_lines (struct print_file_list *p, unsigned int start, unsigned int end)
1175 if (p->map == NULL)
1176 return;
1177 while (start <= end)
1179 print_line (p, start);
1180 start++;
1184 /* Show the line number, or the source line, in a disassembly
1185 listing. */
1187 static void
1188 show_line (bfd *abfd, asection *section, bfd_vma addr_offset)
1190 const char *filename;
1191 const char *functionname;
1192 unsigned int line;
1194 if (! with_line_numbers && ! with_source_code)
1195 return;
1197 if (! bfd_find_nearest_line (abfd, section, syms, addr_offset, &filename,
1198 &functionname, &line))
1199 return;
1201 if (filename != NULL && *filename == '\0')
1202 filename = NULL;
1203 if (functionname != NULL && *functionname == '\0')
1204 functionname = NULL;
1206 if (with_line_numbers)
1208 if (functionname != NULL
1209 && (prev_functionname == NULL
1210 || strcmp (functionname, prev_functionname) != 0))
1211 printf ("%s():\n", functionname);
1212 if (line > 0 && line != prev_line)
1213 printf ("%s:%u\n", filename == NULL ? "???" : filename, line);
1216 if (with_source_code
1217 && filename != NULL
1218 && line > 0)
1220 struct print_file_list **pp, *p;
1221 unsigned l;
1223 for (pp = &print_files; *pp != NULL; pp = &(*pp)->next)
1224 if (strcmp ((*pp)->filename, filename) == 0)
1225 break;
1226 p = *pp;
1228 if (p == NULL)
1229 p = update_source_path (filename);
1231 if (p != NULL && line != p->last_line)
1233 if (file_start_context && p->first)
1234 l = 1;
1235 else
1237 l = line - SHOW_PRECEDING_CONTEXT_LINES;
1238 if (l >= line)
1239 l = 1;
1240 if (p->last_line >= l && p->last_line <= line)
1241 l = p->last_line + 1;
1243 dump_lines (p, l, line);
1244 p->last_line = line;
1245 p->first = 0;
1249 if (functionname != NULL
1250 && (prev_functionname == NULL
1251 || strcmp (functionname, prev_functionname) != 0))
1253 if (prev_functionname != NULL)
1254 free (prev_functionname);
1255 prev_functionname = xmalloc (strlen (functionname) + 1);
1256 strcpy (prev_functionname, functionname);
1259 if (line > 0 && line != prev_line)
1260 prev_line = line;
1263 /* Pseudo FILE object for strings. */
1264 typedef struct
1266 char *buffer;
1267 size_t pos;
1268 size_t alloc;
1269 } SFILE;
1271 /* sprintf to a "stream". */
1273 static int ATTRIBUTE_PRINTF_2
1274 objdump_sprintf (SFILE *f, const char *format, ...)
1276 size_t n;
1277 va_list args;
1279 while (1)
1281 size_t space = f->alloc - f->pos;
1283 va_start (args, format);
1284 n = vsnprintf (f->buffer + f->pos, space, format, args);
1285 va_end (args);
1287 if (space > n)
1288 break;
1290 f->alloc = (f->alloc + n) * 2;
1291 f->buffer = xrealloc (f->buffer, f->alloc);
1293 f->pos += n;
1295 return n;
1298 /* Returns TRUE if the specified section should be dumped. */
1300 static bfd_boolean
1301 process_section_p (asection * section)
1303 size_t i;
1305 if (only == NULL)
1306 return TRUE;
1308 for (i = 0; i < only_used; i++)
1309 if (strcmp (only [i], section->name) == 0)
1310 return TRUE;
1312 return FALSE;
1316 /* The number of zeroes we want to see before we start skipping them.
1317 The number is arbitrarily chosen. */
1319 #define DEFAULT_SKIP_ZEROES 8
1321 /* The number of zeroes to skip at the end of a section. If the
1322 number of zeroes at the end is between SKIP_ZEROES_AT_END and
1323 SKIP_ZEROES, they will be disassembled. If there are fewer than
1324 SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic
1325 attempt to avoid disassembling zeroes inserted by section
1326 alignment. */
1328 #define DEFAULT_SKIP_ZEROES_AT_END 3
1330 /* Disassemble some data in memory between given values. */
1332 static void
1333 disassemble_bytes (struct disassemble_info * info,
1334 disassembler_ftype disassemble_fn,
1335 bfd_boolean insns,
1336 bfd_byte * data,
1337 bfd_vma start_offset,
1338 bfd_vma stop_offset,
1339 bfd_vma rel_offset,
1340 arelent *** relppp,
1341 arelent ** relppend)
1343 struct objdump_disasm_info *aux;
1344 asection *section;
1345 int octets_per_line;
1346 bfd_boolean done_dot;
1347 int skip_addr_chars;
1348 bfd_vma addr_offset;
1349 unsigned int opb = info->octets_per_byte;
1350 unsigned int skip_zeroes = info->skip_zeroes;
1351 unsigned int skip_zeroes_at_end = info->skip_zeroes_at_end;
1352 int octets = opb;
1353 SFILE sfile;
1355 aux = (struct objdump_disasm_info *) info->application_data;
1356 section = aux->sec;
1358 sfile.alloc = 120;
1359 sfile.buffer = xmalloc (sfile.alloc);
1360 sfile.pos = 0;
1362 if (insns)
1363 octets_per_line = 4;
1364 else
1365 octets_per_line = 16;
1367 /* Figure out how many characters to skip at the start of an
1368 address, to make the disassembly look nicer. We discard leading
1369 zeroes in chunks of 4, ensuring that there is always a leading
1370 zero remaining. */
1371 skip_addr_chars = 0;
1372 if (! prefix_addresses)
1374 char buf[30];
1375 char *s;
1377 bfd_sprintf_vma
1378 (aux->abfd, buf,
1379 (section->vma
1380 + bfd_section_size (section->owner, section) / opb));
1381 s = buf;
1382 while (s[0] == '0' && s[1] == '0' && s[2] == '0' && s[3] == '0'
1383 && s[4] == '0')
1385 skip_addr_chars += 4;
1386 s += 4;
1390 info->insn_info_valid = 0;
1392 done_dot = FALSE;
1393 addr_offset = start_offset;
1394 while (addr_offset < stop_offset)
1396 bfd_vma z;
1397 bfd_boolean need_nl = FALSE;
1398 int previous_octets;
1400 /* Remember the length of the previous instruction. */
1401 previous_octets = octets;
1402 octets = 0;
1404 /* If we see more than SKIP_ZEROES octets of zeroes, we just
1405 print `...'. */
1406 for (z = addr_offset * opb; z < stop_offset * opb; z++)
1407 if (data[z] != 0)
1408 break;
1409 if (! disassemble_zeroes
1410 && (info->insn_info_valid == 0
1411 || info->branch_delay_insns == 0)
1412 && (z - addr_offset * opb >= skip_zeroes
1413 || (z == stop_offset * opb &&
1414 z - addr_offset * opb < skip_zeroes_at_end)))
1416 /* If there are more nonzero octets to follow, we only skip
1417 zeroes in multiples of 4, to try to avoid running over
1418 the start of an instruction which happens to start with
1419 zero. */
1420 if (z != stop_offset * opb)
1421 z = addr_offset * opb + ((z - addr_offset * opb) &~ 3);
1423 octets = z - addr_offset * opb;
1425 /* If we are going to display more data, and we are displaying
1426 file offsets, then tell the user how many zeroes we skip
1427 and the file offset from where we resume dumping. */
1428 if (display_file_offsets && ((addr_offset + (octets / opb)) < stop_offset))
1429 printf ("\t... (skipping %d zeroes, resuming at file offset: 0x%lx)\n",
1430 octets / opb,
1431 (unsigned long) (section->filepos
1432 + (addr_offset + (octets / opb))));
1433 else
1434 printf ("\t...\n");
1436 else
1438 char buf[50];
1439 int bpc = 0;
1440 int pb = 0;
1442 done_dot = FALSE;
1444 if (with_line_numbers || with_source_code)
1445 show_line (aux->abfd, section, addr_offset);
1447 if (! prefix_addresses)
1449 char *s;
1451 bfd_sprintf_vma (aux->abfd, buf, section->vma + addr_offset);
1452 for (s = buf + skip_addr_chars; *s == '0'; s++)
1453 *s = ' ';
1454 if (*s == '\0')
1455 *--s = '0';
1456 printf ("%s:\t", buf + skip_addr_chars);
1458 else
1460 aux->require_sec = TRUE;
1461 objdump_print_address (section->vma + addr_offset, info);
1462 aux->require_sec = FALSE;
1463 putchar (' ');
1466 if (insns)
1468 sfile.pos = 0;
1469 info->fprintf_func = (fprintf_ftype) objdump_sprintf;
1470 info->stream = &sfile;
1471 info->bytes_per_line = 0;
1472 info->bytes_per_chunk = 0;
1473 info->flags = 0;
1475 if (info->disassembler_needs_relocs
1476 && (bfd_get_file_flags (aux->abfd) & EXEC_P) == 0
1477 && (bfd_get_file_flags (aux->abfd) & DYNAMIC) == 0
1478 && *relppp < relppend)
1480 bfd_signed_vma distance_to_rel;
1482 distance_to_rel = (**relppp)->address
1483 - (rel_offset + addr_offset);
1485 /* Check to see if the current reloc is associated with
1486 the instruction that we are about to disassemble. */
1487 if (distance_to_rel == 0
1488 /* FIXME: This is wrong. We are trying to catch
1489 relocs that are addressed part way through the
1490 current instruction, as might happen with a packed
1491 VLIW instruction. Unfortunately we do not know the
1492 length of the current instruction since we have not
1493 disassembled it yet. Instead we take a guess based
1494 upon the length of the previous instruction. The
1495 proper solution is to have a new target-specific
1496 disassembler function which just returns the length
1497 of an instruction at a given address without trying
1498 to display its disassembly. */
1499 || (distance_to_rel > 0
1500 && distance_to_rel < (bfd_signed_vma) (previous_octets/ opb)))
1502 info->flags = INSN_HAS_RELOC;
1503 aux->reloc = **relppp;
1505 else
1506 aux->reloc = NULL;
1509 octets = (*disassemble_fn) (section->vma + addr_offset, info);
1510 info->fprintf_func = (fprintf_ftype) fprintf;
1511 info->stream = stdout;
1512 if (info->bytes_per_line != 0)
1513 octets_per_line = info->bytes_per_line;
1514 if (octets < 0)
1516 if (sfile.pos)
1517 printf ("%s\n", sfile.buffer);
1518 break;
1521 else
1523 bfd_vma j;
1525 octets = octets_per_line;
1526 if (addr_offset + octets / opb > stop_offset)
1527 octets = (stop_offset - addr_offset) * opb;
1529 for (j = addr_offset * opb; j < addr_offset * opb + octets; ++j)
1531 if (ISPRINT (data[j]))
1532 buf[j - addr_offset * opb] = data[j];
1533 else
1534 buf[j - addr_offset * opb] = '.';
1536 buf[j - addr_offset * opb] = '\0';
1539 if (prefix_addresses
1540 ? show_raw_insn > 0
1541 : show_raw_insn >= 0)
1543 bfd_vma j;
1545 /* If ! prefix_addresses and ! wide_output, we print
1546 octets_per_line octets per line. */
1547 pb = octets;
1548 if (pb > octets_per_line && ! prefix_addresses && ! wide_output)
1549 pb = octets_per_line;
1551 if (info->bytes_per_chunk)
1552 bpc = info->bytes_per_chunk;
1553 else
1554 bpc = 1;
1556 for (j = addr_offset * opb; j < addr_offset * opb + pb; j += bpc)
1558 int k;
1560 if (bpc > 1 && info->display_endian == BFD_ENDIAN_LITTLE)
1562 for (k = bpc - 1; k >= 0; k--)
1563 printf ("%02x", (unsigned) data[j + k]);
1564 putchar (' ');
1566 else
1568 for (k = 0; k < bpc; k++)
1569 printf ("%02x", (unsigned) data[j + k]);
1570 putchar (' ');
1574 for (; pb < octets_per_line; pb += bpc)
1576 int k;
1578 for (k = 0; k < bpc; k++)
1579 printf (" ");
1580 putchar (' ');
1583 /* Separate raw data from instruction by extra space. */
1584 if (insns)
1585 putchar ('\t');
1586 else
1587 printf (" ");
1590 if (! insns)
1591 printf ("%s", buf);
1592 else if (sfile.pos)
1593 printf ("%s", sfile.buffer);
1595 if (prefix_addresses
1596 ? show_raw_insn > 0
1597 : show_raw_insn >= 0)
1599 while (pb < octets)
1601 bfd_vma j;
1602 char *s;
1604 putchar ('\n');
1605 j = addr_offset * opb + pb;
1607 bfd_sprintf_vma (aux->abfd, buf, section->vma + j / opb);
1608 for (s = buf + skip_addr_chars; *s == '0'; s++)
1609 *s = ' ';
1610 if (*s == '\0')
1611 *--s = '0';
1612 printf ("%s:\t", buf + skip_addr_chars);
1614 pb += octets_per_line;
1615 if (pb > octets)
1616 pb = octets;
1617 for (; j < addr_offset * opb + pb; j += bpc)
1619 int k;
1621 if (bpc > 1 && info->display_endian == BFD_ENDIAN_LITTLE)
1623 for (k = bpc - 1; k >= 0; k--)
1624 printf ("%02x", (unsigned) data[j + k]);
1625 putchar (' ');
1627 else
1629 for (k = 0; k < bpc; k++)
1630 printf ("%02x", (unsigned) data[j + k]);
1631 putchar (' ');
1637 if (!wide_output)
1638 putchar ('\n');
1639 else
1640 need_nl = TRUE;
1643 while ((*relppp) < relppend
1644 && (**relppp)->address < rel_offset + addr_offset + octets / opb)
1646 if (dump_reloc_info || dump_dynamic_reloc_info)
1648 arelent *q;
1650 q = **relppp;
1652 if (wide_output)
1653 putchar ('\t');
1654 else
1655 printf ("\t\t\t");
1657 objdump_print_value (section->vma - rel_offset + q->address,
1658 info, TRUE);
1660 if (q->howto == NULL)
1661 printf (": *unknown*\t");
1662 else if (q->howto->name)
1663 printf (": %s\t", q->howto->name);
1664 else
1665 printf (": %d\t", q->howto->type);
1667 if (q->sym_ptr_ptr == NULL || *q->sym_ptr_ptr == NULL)
1668 printf ("*unknown*");
1669 else
1671 const char *sym_name;
1673 sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
1674 if (sym_name != NULL && *sym_name != '\0')
1675 objdump_print_symname (aux->abfd, info, *q->sym_ptr_ptr);
1676 else
1678 asection *sym_sec;
1680 sym_sec = bfd_get_section (*q->sym_ptr_ptr);
1681 sym_name = bfd_get_section_name (aux->abfd, sym_sec);
1682 if (sym_name == NULL || *sym_name == '\0')
1683 sym_name = "*unknown*";
1684 printf ("%s", sym_name);
1688 if (q->addend)
1690 printf ("+0x");
1691 objdump_print_value (q->addend, info, TRUE);
1694 printf ("\n");
1695 need_nl = FALSE;
1697 ++(*relppp);
1700 if (need_nl)
1701 printf ("\n");
1703 addr_offset += octets / opb;
1706 free (sfile.buffer);
1709 static void
1710 disassemble_section (bfd *abfd, asection *section, void *info)
1712 struct disassemble_info * pinfo = (struct disassemble_info *) info;
1713 struct objdump_disasm_info * paux;
1714 unsigned int opb = pinfo->octets_per_byte;
1715 bfd_byte * data = NULL;
1716 bfd_size_type datasize = 0;
1717 arelent ** rel_pp = NULL;
1718 arelent ** rel_ppstart = NULL;
1719 arelent ** rel_ppend;
1720 unsigned long stop_offset;
1721 asymbol * sym = NULL;
1722 long place = 0;
1723 long rel_count;
1724 bfd_vma rel_offset;
1725 unsigned long addr_offset;
1727 /* Sections that do not contain machine
1728 code are not normally disassembled. */
1729 if (! disassemble_all
1730 && only == NULL
1731 && ((section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
1732 != (SEC_CODE | SEC_HAS_CONTENTS)))
1733 return;
1735 if (! process_section_p (section))
1736 return;
1738 datasize = bfd_get_section_size (section);
1739 if (datasize == 0)
1740 return;
1742 /* Decide which set of relocs to use. Load them if necessary. */
1743 paux = (struct objdump_disasm_info *) pinfo->application_data;
1744 if (paux->dynrelbuf)
1746 rel_pp = paux->dynrelbuf;
1747 rel_count = paux->dynrelcount;
1748 /* Dynamic reloc addresses are absolute, non-dynamic are section
1749 relative. REL_OFFSET specifies the reloc address corresponding
1750 to the start of this section. */
1751 rel_offset = section->vma;
1753 else
1755 rel_count = 0;
1756 rel_pp = NULL;
1757 rel_offset = 0;
1759 if ((section->flags & SEC_RELOC) != 0
1760 && (dump_reloc_info || pinfo->disassembler_needs_relocs))
1762 long relsize;
1764 relsize = bfd_get_reloc_upper_bound (abfd, section);
1765 if (relsize < 0)
1766 bfd_fatal (bfd_get_filename (abfd));
1768 if (relsize > 0)
1770 rel_ppstart = rel_pp = xmalloc (relsize);
1771 rel_count = bfd_canonicalize_reloc (abfd, section, rel_pp, syms);
1772 if (rel_count < 0)
1773 bfd_fatal (bfd_get_filename (abfd));
1775 /* Sort the relocs by address. */
1776 qsort (rel_pp, rel_count, sizeof (arelent *), compare_relocs);
1781 rel_ppend = rel_pp + rel_count;
1783 data = xmalloc (datasize);
1785 bfd_get_section_contents (abfd, section, data, 0, datasize);
1787 paux->sec = section;
1788 pinfo->buffer = data;
1789 pinfo->buffer_vma = section->vma;
1790 pinfo->buffer_length = datasize;
1791 pinfo->section = section;
1793 if (start_address == (bfd_vma) -1
1794 || start_address < pinfo->buffer_vma)
1795 addr_offset = 0;
1796 else
1797 addr_offset = start_address - pinfo->buffer_vma;
1799 if (stop_address == (bfd_vma) -1)
1800 stop_offset = datasize / opb;
1801 else
1803 if (stop_address < pinfo->buffer_vma)
1804 stop_offset = 0;
1805 else
1806 stop_offset = stop_address - pinfo->buffer_vma;
1807 if (stop_offset > pinfo->buffer_length / opb)
1808 stop_offset = pinfo->buffer_length / opb;
1811 /* Skip over the relocs belonging to addresses below the
1812 start address. */
1813 while (rel_pp < rel_ppend
1814 && (*rel_pp)->address < rel_offset + addr_offset)
1815 ++rel_pp;
1817 if (addr_offset < stop_offset)
1818 printf (_("\nDisassembly of section %s:\n"), section->name);
1820 /* Find the nearest symbol forwards from our current position. */
1821 paux->require_sec = TRUE;
1822 sym = find_symbol_for_address (section->vma + addr_offset, info, &place);
1823 paux->require_sec = FALSE;
1825 /* Disassemble a block of instructions up to the address associated with
1826 the symbol we have just found. Then print the symbol and find the
1827 next symbol on. Repeat until we have disassembled the entire section
1828 or we have reached the end of the address range we are interested in. */
1829 while (addr_offset < stop_offset)
1831 bfd_vma addr;
1832 asymbol *nextsym;
1833 unsigned long nextstop_offset;
1834 bfd_boolean insns;
1836 addr = section->vma + addr_offset;
1838 if (sym != NULL && bfd_asymbol_value (sym) <= addr)
1840 int x;
1842 for (x = place;
1843 (x < sorted_symcount
1844 && (bfd_asymbol_value (sorted_syms[x]) <= addr));
1845 ++x)
1846 continue;
1848 pinfo->symbols = sorted_syms + place;
1849 pinfo->num_symbols = x - place;
1850 pinfo->symtab_pos = place;
1852 else
1854 pinfo->symbols = NULL;
1855 pinfo->num_symbols = 0;
1856 pinfo->symtab_pos = -1;
1859 if (! prefix_addresses)
1861 pinfo->fprintf_func (pinfo->stream, "\n");
1862 objdump_print_addr_with_sym (abfd, section, sym, addr,
1863 pinfo, FALSE);
1864 pinfo->fprintf_func (pinfo->stream, ":\n");
1867 if (sym != NULL && bfd_asymbol_value (sym) > addr)
1868 nextsym = sym;
1869 else if (sym == NULL)
1870 nextsym = NULL;
1871 else
1873 #define is_valid_next_sym(SYM) \
1874 ((SYM)->section == section \
1875 && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
1876 && pinfo->symbol_is_valid (SYM, pinfo))
1878 /* Search forward for the next appropriate symbol in
1879 SECTION. Note that all the symbols are sorted
1880 together into one big array, and that some sections
1881 may have overlapping addresses. */
1882 while (place < sorted_symcount
1883 && ! is_valid_next_sym (sorted_syms [place]))
1884 ++place;
1886 if (place >= sorted_symcount)
1887 nextsym = NULL;
1888 else
1889 nextsym = sorted_syms[place];
1892 if (sym != NULL && bfd_asymbol_value (sym) > addr)
1893 nextstop_offset = bfd_asymbol_value (sym) - section->vma;
1894 else if (nextsym == NULL)
1895 nextstop_offset = stop_offset;
1896 else
1897 nextstop_offset = bfd_asymbol_value (nextsym) - section->vma;
1899 if (nextstop_offset > stop_offset)
1900 nextstop_offset = stop_offset;
1902 /* If a symbol is explicitly marked as being an object
1903 rather than a function, just dump the bytes without
1904 disassembling them. */
1905 if (disassemble_all
1906 || sym == NULL
1907 || bfd_asymbol_value (sym) > addr
1908 || ((sym->flags & BSF_OBJECT) == 0
1909 && (strstr (bfd_asymbol_name (sym), "gnu_compiled")
1910 == NULL)
1911 && (strstr (bfd_asymbol_name (sym), "gcc2_compiled")
1912 == NULL))
1913 || (sym->flags & BSF_FUNCTION) != 0)
1914 insns = TRUE;
1915 else
1916 insns = FALSE;
1918 disassemble_bytes (pinfo, paux->disassemble_fn, insns, data,
1919 addr_offset, nextstop_offset,
1920 rel_offset, &rel_pp, rel_ppend);
1922 addr_offset = nextstop_offset;
1923 sym = nextsym;
1926 free (data);
1928 if (rel_ppstart != NULL)
1929 free (rel_ppstart);
1932 /* Disassemble the contents of an object file. */
1934 static void
1935 disassemble_data (bfd *abfd)
1937 struct disassemble_info disasm_info;
1938 struct objdump_disasm_info aux;
1939 long i;
1941 print_files = NULL;
1942 prev_functionname = NULL;
1943 prev_line = -1;
1945 /* We make a copy of syms to sort. We don't want to sort syms
1946 because that will screw up the relocs. */
1947 sorted_symcount = symcount ? symcount : dynsymcount;
1948 sorted_syms = xmalloc ((sorted_symcount + synthcount) * sizeof (asymbol *));
1949 memcpy (sorted_syms, symcount ? syms : dynsyms,
1950 sorted_symcount * sizeof (asymbol *));
1952 sorted_symcount = remove_useless_symbols (sorted_syms, sorted_symcount);
1954 for (i = 0; i < synthcount; ++i)
1956 sorted_syms[sorted_symcount] = synthsyms + i;
1957 ++sorted_symcount;
1960 /* Sort the symbols into section and symbol order. */
1961 qsort (sorted_syms, sorted_symcount, sizeof (asymbol *), compare_symbols);
1963 init_disassemble_info (&disasm_info, stdout, (fprintf_ftype) fprintf);
1965 disasm_info.application_data = (void *) &aux;
1966 aux.abfd = abfd;
1967 aux.require_sec = FALSE;
1968 aux.dynrelbuf = NULL;
1969 aux.dynrelcount = 0;
1970 aux.reloc = NULL;
1972 disasm_info.print_address_func = objdump_print_address;
1973 disasm_info.symbol_at_address_func = objdump_symbol_at_address;
1975 if (machine != NULL)
1977 const bfd_arch_info_type *info = bfd_scan_arch (machine);
1979 if (info == NULL)
1980 fatal (_("Can't use supplied machine %s"), machine);
1982 abfd->arch_info = info;
1985 if (endian != BFD_ENDIAN_UNKNOWN)
1987 struct bfd_target *xvec;
1989 xvec = xmalloc (sizeof (struct bfd_target));
1990 memcpy (xvec, abfd->xvec, sizeof (struct bfd_target));
1991 xvec->byteorder = endian;
1992 abfd->xvec = xvec;
1995 /* Use libopcodes to locate a suitable disassembler. */
1996 aux.disassemble_fn = disassembler (abfd);
1997 if (!aux.disassemble_fn)
1999 non_fatal (_("Can't disassemble for architecture %s\n"),
2000 bfd_printable_arch_mach (bfd_get_arch (abfd), 0));
2001 exit_status = 1;
2002 return;
2005 disasm_info.flavour = bfd_get_flavour (abfd);
2006 disasm_info.arch = bfd_get_arch (abfd);
2007 disasm_info.mach = bfd_get_mach (abfd);
2008 disasm_info.disassembler_options = disassembler_options;
2009 disasm_info.octets_per_byte = bfd_octets_per_byte (abfd);
2010 disasm_info.skip_zeroes = DEFAULT_SKIP_ZEROES;
2011 disasm_info.skip_zeroes_at_end = DEFAULT_SKIP_ZEROES_AT_END;
2012 disasm_info.disassembler_needs_relocs = FALSE;
2014 if (bfd_big_endian (abfd))
2015 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_BIG;
2016 else if (bfd_little_endian (abfd))
2017 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_LITTLE;
2018 else
2019 /* ??? Aborting here seems too drastic. We could default to big or little
2020 instead. */
2021 disasm_info.endian = BFD_ENDIAN_UNKNOWN;
2023 /* Allow the target to customize the info structure. */
2024 disassemble_init_for_target (& disasm_info);
2026 /* Pre-load the dynamic relocs if we are going
2027 to be dumping them along with the disassembly. */
2028 if (dump_dynamic_reloc_info)
2030 long relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2032 if (relsize < 0)
2033 bfd_fatal (bfd_get_filename (abfd));
2035 if (relsize > 0)
2037 aux.dynrelbuf = xmalloc (relsize);
2038 aux.dynrelcount = bfd_canonicalize_dynamic_reloc (abfd,
2039 aux.dynrelbuf,
2040 dynsyms);
2041 if (aux.dynrelcount < 0)
2042 bfd_fatal (bfd_get_filename (abfd));
2044 /* Sort the relocs by address. */
2045 qsort (aux.dynrelbuf, aux.dynrelcount, sizeof (arelent *),
2046 compare_relocs);
2049 disasm_info.symtab = sorted_syms;
2050 disasm_info.symtab_size = sorted_symcount;
2052 bfd_map_over_sections (abfd, disassemble_section, & disasm_info);
2054 if (aux.dynrelbuf != NULL)
2055 free (aux.dynrelbuf);
2056 free (sorted_syms);
2060 load_debug_section (enum dwarf_section_display_enum debug, void *file)
2062 struct dwarf_section *section = &debug_displays [debug].section;
2063 bfd *abfd = file;
2064 asection *sec;
2065 bfd_boolean ret;
2066 int section_is_compressed;
2068 /* If it is already loaded, do nothing. */
2069 if (section->start != NULL)
2070 return 1;
2072 /* Locate the debug section. */
2073 sec = bfd_get_section_by_name (abfd, section->uncompressed_name);
2074 if (sec != NULL)
2075 section->name = section->uncompressed_name;
2076 else
2078 sec = bfd_get_section_by_name (abfd, section->compressed_name);
2079 if (sec != NULL)
2080 section->name = section->compressed_name;
2082 if (sec == NULL)
2083 return 0;
2084 section_is_compressed = section->name == section->compressed_name;
2086 /* Compute a bias to be added to offsets found within the DWARF debug
2087 information. These offsets are meant to be relative to the start of
2088 the dwarf section, and hence the bias should be 0. For MACH-O however
2089 a dwarf section is really just a region of a much larger section and so
2090 the bias is the address of the start of that area within the larger
2091 section. This test is important for PE and COFF based targets which
2092 use DWARF debug information, since unlike ELF, they do not allow the
2093 dwarf sections to be placed at address 0. */
2094 if (bfd_get_flavour (abfd) == bfd_target_mach_o_flavour)
2095 section->address = bfd_get_section_vma (abfd, sec);
2096 else
2097 section->address = 0;
2099 section->size = bfd_get_section_size (sec);
2100 section->start = xmalloc (section->size);
2102 if (is_relocatable && debug_displays [debug].relocate)
2103 ret = bfd_simple_get_relocated_section_contents (abfd,
2104 sec,
2105 section->start,
2106 syms) != NULL;
2107 else
2108 ret = bfd_get_section_contents (abfd, sec, section->start, 0,
2109 section->size);
2111 if (! ret)
2113 free_debug_section (debug);
2114 printf (_("\nCan't get contents for section '%s'.\n"),
2115 section->name);
2116 return 0;
2119 if (section_is_compressed)
2121 bfd_size_type size = section->size;
2122 if (! bfd_uncompress_section_contents (&section->start, &size))
2124 free_debug_section (debug);
2125 printf (_("\nCan't uncompress section '%s'.\n"), section->name);
2126 return 0;
2128 section->size = size;
2131 return ret;
2134 void
2135 free_debug_section (enum dwarf_section_display_enum debug)
2137 struct dwarf_section *section = &debug_displays [debug].section;
2139 if (section->start == NULL)
2140 return;
2142 free ((char *) section->start);
2143 section->start = NULL;
2144 section->address = 0;
2145 section->size = 0;
2148 static void
2149 dump_dwarf_section (bfd *abfd, asection *section,
2150 void *arg ATTRIBUTE_UNUSED)
2152 const char *name = bfd_get_section_name (abfd, section);
2153 const char *match;
2154 enum dwarf_section_display_enum i;
2156 if (CONST_STRNEQ (name, ".gnu.linkonce.wi."))
2157 match = ".debug_info";
2158 else
2159 match = name;
2161 for (i = 0; i < max; i++)
2162 if (strcmp (debug_displays [i].section.uncompressed_name, match) == 0
2163 || strcmp (debug_displays [i].section.compressed_name, match) == 0)
2165 if (!debug_displays [i].eh_frame)
2167 struct dwarf_section *sec = &debug_displays [i].section;
2169 if (load_debug_section (i, abfd))
2171 debug_displays [i].display (sec, abfd);
2173 if (i != info && i != abbrev)
2174 free_debug_section (i);
2177 break;
2181 static const char *mach_o_uncompressed_dwarf_sections [] = {
2182 "LC_SEGMENT.__DWARFA.__debug_abbrev", /* .debug_abbrev */
2183 "LC_SEGMENT.__DWARFA.__debug_aranges", /* .debug_aranges */
2184 "LC_SEGMENT.__DWARFA.__debug_frame", /* .debug_frame */
2185 "LC_SEGMENT.__DWARFA.__debug_info", /* .debug_info */
2186 "LC_SEGMENT.__DWARFA.__debug_line", /* .debug_line */
2187 "LC_SEGMENT.__DWARFA.__debug_pubnames", /* .debug_pubnames */
2188 ".eh_frame", /* .eh_frame */
2189 "LC_SEGMENT.__DWARFA.__debug_macinfo", /* .debug_macinfo */
2190 "LC_SEGMENT.__DWARFA.__debug_str", /* .debug_str */
2191 "LC_SEGMENT.__DWARFA.__debug_loc", /* .debug_loc */
2192 "LC_SEGMENT.__DWARFA.__debug_pubtypes", /* .debug_pubtypes */
2193 "LC_SEGMENT.__DWARFA.__debug_ranges", /* .debug_ranges */
2194 "LC_SEGMENT.__DWARFA.__debug_static_func", /* .debug_static_func */
2195 "LC_SEGMENT.__DWARFA.__debug_static_vars", /* .debug_static_vars */
2196 "LC_SEGMENT.__DWARFA.__debug_types", /* .debug_types */
2197 "LC_SEGMENT.__DWARFA.__debug_weaknames" /* .debug_weaknames */
2200 static const char *mach_o_compressed_dwarf_sections [] = {
2201 "LC_SEGMENT.__DWARFA.__zdebug_abbrev", /* .zdebug_abbrev */
2202 "LC_SEGMENT.__DWARFA.__zdebug_aranges", /* .zdebug_aranges */
2203 "LC_SEGMENT.__DWARFA.__zdebug_frame", /* .zdebug_frame */
2204 "LC_SEGMENT.__DWARFA.__zdebug_info", /* .zdebug_info */
2205 "LC_SEGMENT.__DWARFA.__zdebug_line", /* .zdebug_line */
2206 "LC_SEGMENT.__DWARFA.__zdebug_pubnames", /* .zdebug_pubnames */
2207 ".eh_frame", /* .eh_frame */
2208 "LC_SEGMENT.__DWARFA.__zdebug_macinfo", /* .zdebug_macinfo */
2209 "LC_SEGMENT.__DWARFA.__zdebug_str", /* .zdebug_str */
2210 "LC_SEGMENT.__DWARFA.__zdebug_loc", /* .zdebug_loc */
2211 "LC_SEGMENT.__DWARFA.__zdebug_pubtypes", /* .zdebug_pubtypes */
2212 "LC_SEGMENT.__DWARFA.__zdebug_ranges", /* .zdebug_ranges */
2213 "LC_SEGMENT.__DWARFA.__zdebug_static_func", /* .zdebug_static_func */
2214 "LC_SEGMENT.__DWARFA.__zdebug_static_vars", /* .zdebug_static_vars */
2215 "LC_SEGMENT.__DWARFA.__zdebug_types", /* .zdebug_types */
2216 "LC_SEGMENT.__DWARFA.__zdebug_weaknames" /* .zdebug_weaknames */
2219 static const char *generic_uncompressed_dwarf_sections [max];
2220 static const char *generic_compressed_dwarf_sections [max];
2222 static void
2223 check_mach_o_dwarf (bfd *abfd)
2225 static enum bfd_flavour old_flavour = bfd_target_unknown_flavour;
2226 enum bfd_flavour current_flavour = bfd_get_flavour (abfd);
2227 enum dwarf_section_display_enum i;
2229 if (generic_uncompressed_dwarf_sections [0] == NULL)
2230 for (i = 0; i < max; i++)
2232 generic_uncompressed_dwarf_sections [i]
2233 = debug_displays[i].section.uncompressed_name;
2234 generic_compressed_dwarf_sections [i]
2235 = debug_displays[i].section.compressed_name;
2238 if (old_flavour != current_flavour)
2240 if (current_flavour == bfd_target_mach_o_flavour)
2241 for (i = 0; i < max; i++)
2243 debug_displays[i].section.uncompressed_name
2244 = mach_o_uncompressed_dwarf_sections [i];
2245 debug_displays[i].section.compressed_name
2246 = mach_o_compressed_dwarf_sections [i];
2248 else if (old_flavour == bfd_target_mach_o_flavour)
2249 for (i = 0; i < max; i++)
2251 debug_displays[i].section.uncompressed_name
2252 = generic_uncompressed_dwarf_sections [i];
2253 debug_displays[i].section.compressed_name
2254 = generic_compressed_dwarf_sections [i];
2257 old_flavour = current_flavour;
2261 /* Dump the dwarf debugging information. */
2263 static void
2264 dump_dwarf (bfd *abfd)
2266 is_relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2268 /* FIXME: bfd_get_arch_size may return -1. We assume that 64bit
2269 targets will return 64. */
2270 eh_addr_size = bfd_get_arch_size (abfd) == 64 ? 8 : 4;
2272 if (bfd_big_endian (abfd))
2273 byte_get = byte_get_big_endian;
2274 else if (bfd_little_endian (abfd))
2275 byte_get = byte_get_little_endian;
2276 else
2277 abort ();
2279 check_mach_o_dwarf (abfd);
2281 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
2283 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2284 init_dwarf_regnames (bed->elf_machine_code);
2287 bfd_map_over_sections (abfd, dump_dwarf_section, NULL);
2289 free_debug_memory ();
2292 /* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
2293 it. Return NULL on failure. */
2295 static char *
2296 read_section_stabs (bfd *abfd, const char *sect_name, bfd_size_type *size_ptr)
2298 asection *stabsect;
2299 bfd_size_type size;
2300 char *contents;
2302 stabsect = bfd_get_section_by_name (abfd, sect_name);
2303 if (stabsect == NULL)
2305 printf (_("No %s section present\n\n"), sect_name);
2306 return FALSE;
2309 size = bfd_section_size (abfd, stabsect);
2310 contents = xmalloc (size);
2312 if (! bfd_get_section_contents (abfd, stabsect, contents, 0, size))
2314 non_fatal (_("Reading %s section of %s failed: %s"),
2315 sect_name, bfd_get_filename (abfd),
2316 bfd_errmsg (bfd_get_error ()));
2317 free (contents);
2318 exit_status = 1;
2319 return NULL;
2322 *size_ptr = size;
2324 return contents;
2327 /* Stabs entries use a 12 byte format:
2328 4 byte string table index
2329 1 byte stab type
2330 1 byte stab other field
2331 2 byte stab desc field
2332 4 byte stab value
2333 FIXME: This will have to change for a 64 bit object format. */
2335 #define STRDXOFF (0)
2336 #define TYPEOFF (4)
2337 #define OTHEROFF (5)
2338 #define DESCOFF (6)
2339 #define VALOFF (8)
2340 #define STABSIZE (12)
2342 /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
2343 using string table section STRSECT_NAME (in `strtab'). */
2345 static void
2346 print_section_stabs (bfd *abfd,
2347 const char *stabsect_name,
2348 unsigned *string_offset_ptr)
2350 int i;
2351 unsigned file_string_table_offset = 0;
2352 unsigned next_file_string_table_offset = *string_offset_ptr;
2353 bfd_byte *stabp, *stabs_end;
2355 stabp = stabs;
2356 stabs_end = stabp + stab_size;
2358 printf (_("Contents of %s section:\n\n"), stabsect_name);
2359 printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
2361 /* Loop through all symbols and print them.
2363 We start the index at -1 because there is a dummy symbol on
2364 the front of stabs-in-{coff,elf} sections that supplies sizes. */
2365 for (i = -1; stabp < stabs_end; stabp += STABSIZE, i++)
2367 const char *name;
2368 unsigned long strx;
2369 unsigned char type, other;
2370 unsigned short desc;
2371 bfd_vma value;
2373 strx = bfd_h_get_32 (abfd, stabp + STRDXOFF);
2374 type = bfd_h_get_8 (abfd, stabp + TYPEOFF);
2375 other = bfd_h_get_8 (abfd, stabp + OTHEROFF);
2376 desc = bfd_h_get_16 (abfd, stabp + DESCOFF);
2377 value = bfd_h_get_32 (abfd, stabp + VALOFF);
2379 printf ("\n%-6d ", i);
2380 /* Either print the stab name, or, if unnamed, print its number
2381 again (makes consistent formatting for tools like awk). */
2382 name = bfd_get_stab_name (type);
2383 if (name != NULL)
2384 printf ("%-6s", name);
2385 else if (type == N_UNDF)
2386 printf ("HdrSym");
2387 else
2388 printf ("%-6d", type);
2389 printf (" %-6d %-6d ", other, desc);
2390 bfd_printf_vma (abfd, value);
2391 printf (" %-6lu", strx);
2393 /* Symbols with type == 0 (N_UNDF) specify the length of the
2394 string table associated with this file. We use that info
2395 to know how to relocate the *next* file's string table indices. */
2396 if (type == N_UNDF)
2398 file_string_table_offset = next_file_string_table_offset;
2399 next_file_string_table_offset += value;
2401 else
2403 /* Using the (possibly updated) string table offset, print the
2404 string (if any) associated with this symbol. */
2405 if ((strx + file_string_table_offset) < stabstr_size)
2406 printf (" %s", &strtab[strx + file_string_table_offset]);
2407 else
2408 printf (" *");
2411 printf ("\n\n");
2412 *string_offset_ptr = next_file_string_table_offset;
2415 typedef struct
2417 const char * section_name;
2418 const char * string_section_name;
2419 unsigned string_offset;
2421 stab_section_names;
2423 static void
2424 find_stabs_section (bfd *abfd, asection *section, void *names)
2426 int len;
2427 stab_section_names * sought = (stab_section_names *) names;
2429 /* Check for section names for which stabsect_name is a prefix, to
2430 handle .stab.N, etc. */
2431 len = strlen (sought->section_name);
2433 /* If the prefix matches, and the files section name ends with a
2434 nul or a digit, then we match. I.e., we want either an exact
2435 match or a section followed by a number. */
2436 if (strncmp (sought->section_name, section->name, len) == 0
2437 && (section->name[len] == 0
2438 || (section->name[len] == '.' && ISDIGIT (section->name[len + 1]))))
2440 if (strtab == NULL)
2441 strtab = read_section_stabs (abfd, sought->string_section_name,
2442 &stabstr_size);
2444 if (strtab)
2446 stabs = (bfd_byte *) read_section_stabs (abfd, section->name,
2447 &stab_size);
2448 if (stabs)
2449 print_section_stabs (abfd, section->name, &sought->string_offset);
2454 static void
2455 dump_stabs_section (bfd *abfd, char *stabsect_name, char *strsect_name)
2457 stab_section_names s;
2459 s.section_name = stabsect_name;
2460 s.string_section_name = strsect_name;
2461 s.string_offset = 0;
2463 bfd_map_over_sections (abfd, find_stabs_section, & s);
2465 free (strtab);
2466 strtab = NULL;
2469 /* Dump the any sections containing stabs debugging information. */
2471 static void
2472 dump_stabs (bfd *abfd)
2474 dump_stabs_section (abfd, ".stab", ".stabstr");
2475 dump_stabs_section (abfd, ".stab.excl", ".stab.exclstr");
2476 dump_stabs_section (abfd, ".stab.index", ".stab.indexstr");
2478 /* For Darwin. */
2479 dump_stabs_section (abfd, "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr");
2481 dump_stabs_section (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
2484 static void
2485 dump_bfd_header (bfd *abfd)
2487 char *comma = "";
2489 printf (_("architecture: %s, "),
2490 bfd_printable_arch_mach (bfd_get_arch (abfd),
2491 bfd_get_mach (abfd)));
2492 printf (_("flags 0x%08x:\n"), abfd->flags);
2494 #define PF(x, y) if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
2495 PF (HAS_RELOC, "HAS_RELOC");
2496 PF (EXEC_P, "EXEC_P");
2497 PF (HAS_LINENO, "HAS_LINENO");
2498 PF (HAS_DEBUG, "HAS_DEBUG");
2499 PF (HAS_SYMS, "HAS_SYMS");
2500 PF (HAS_LOCALS, "HAS_LOCALS");
2501 PF (DYNAMIC, "DYNAMIC");
2502 PF (WP_TEXT, "WP_TEXT");
2503 PF (D_PAGED, "D_PAGED");
2504 PF (BFD_IS_RELAXABLE, "BFD_IS_RELAXABLE");
2505 PF (HAS_LOAD_PAGE, "HAS_LOAD_PAGE");
2506 printf (_("\nstart address 0x"));
2507 bfd_printf_vma (abfd, abfd->start_address);
2508 printf ("\n");
2512 static void
2513 dump_bfd_private_header (bfd *abfd)
2515 bfd_print_private_bfd_data (abfd, stdout);
2519 /* Display a section in hexadecimal format with associated characters.
2520 Each line prefixed by the zero padded address. */
2522 static void
2523 dump_section (bfd *abfd, asection *section, void *dummy ATTRIBUTE_UNUSED)
2525 bfd_byte *data = 0;
2526 bfd_size_type datasize;
2527 bfd_size_type addr_offset;
2528 bfd_size_type start_offset;
2529 bfd_size_type stop_offset;
2530 unsigned int opb = bfd_octets_per_byte (abfd);
2531 /* Bytes per line. */
2532 const int onaline = 16;
2533 char buf[64];
2534 int count;
2535 int width;
2537 if ((section->flags & SEC_HAS_CONTENTS) == 0)
2538 return;
2540 if (! process_section_p (section))
2541 return;
2543 if ((datasize = bfd_section_size (abfd, section)) == 0)
2544 return;
2546 /* Compute the address range to display. */
2547 if (start_address == (bfd_vma) -1
2548 || start_address < section->vma)
2549 start_offset = 0;
2550 else
2551 start_offset = start_address - section->vma;
2553 if (stop_address == (bfd_vma) -1)
2554 stop_offset = datasize / opb;
2555 else
2557 if (stop_address < section->vma)
2558 stop_offset = 0;
2559 else
2560 stop_offset = stop_address - section->vma;
2562 if (stop_offset > datasize / opb)
2563 stop_offset = datasize / opb;
2566 if (start_offset >= stop_offset)
2567 return;
2569 printf (_("Contents of section %s:"), section->name);
2570 if (display_file_offsets)
2571 printf (_(" (Starting at file offset: 0x%lx)"),
2572 (unsigned long) (section->filepos + start_offset));
2573 printf ("\n");
2575 data = xmalloc (datasize);
2577 bfd_get_section_contents (abfd, section, data, 0, datasize);
2579 width = 4;
2581 bfd_sprintf_vma (abfd, buf, start_offset + section->vma);
2582 if (strlen (buf) >= sizeof (buf))
2583 abort ();
2585 count = 0;
2586 while (buf[count] == '0' && buf[count+1] != '\0')
2587 count++;
2588 count = strlen (buf) - count;
2589 if (count > width)
2590 width = count;
2592 bfd_sprintf_vma (abfd, buf, stop_offset + section->vma - 1);
2593 if (strlen (buf) >= sizeof (buf))
2594 abort ();
2596 count = 0;
2597 while (buf[count] == '0' && buf[count+1] != '\0')
2598 count++;
2599 count = strlen (buf) - count;
2600 if (count > width)
2601 width = count;
2603 for (addr_offset = start_offset;
2604 addr_offset < stop_offset; addr_offset += onaline / opb)
2606 bfd_size_type j;
2608 bfd_sprintf_vma (abfd, buf, (addr_offset + section->vma));
2609 count = strlen (buf);
2610 if ((size_t) count >= sizeof (buf))
2611 abort ();
2613 putchar (' ');
2614 while (count < width)
2616 putchar ('0');
2617 count++;
2619 fputs (buf + count - width, stdout);
2620 putchar (' ');
2622 for (j = addr_offset * opb;
2623 j < addr_offset * opb + onaline; j++)
2625 if (j < stop_offset * opb)
2626 printf ("%02x", (unsigned) (data[j]));
2627 else
2628 printf (" ");
2629 if ((j & 3) == 3)
2630 printf (" ");
2633 printf (" ");
2634 for (j = addr_offset * opb;
2635 j < addr_offset * opb + onaline; j++)
2637 if (j >= stop_offset * opb)
2638 printf (" ");
2639 else
2640 printf ("%c", ISPRINT (data[j]) ? data[j] : '.');
2642 putchar ('\n');
2644 free (data);
2647 /* Actually display the various requested regions. */
2649 static void
2650 dump_data (bfd *abfd)
2652 bfd_map_over_sections (abfd, dump_section, NULL);
2655 /* Should perhaps share code and display with nm? */
2657 static void
2658 dump_symbols (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean dynamic)
2660 asymbol **current;
2661 long max;
2662 long count;
2664 if (dynamic)
2666 current = dynsyms;
2667 max = dynsymcount;
2668 printf ("DYNAMIC SYMBOL TABLE:\n");
2670 else
2672 current = syms;
2673 max = symcount;
2674 printf ("SYMBOL TABLE:\n");
2677 if (max == 0)
2678 printf (_("no symbols\n"));
2680 for (count = 0; count < max; count++)
2682 bfd *cur_bfd;
2684 if (*current == NULL)
2685 printf (_("no information for symbol number %ld\n"), count);
2687 else if ((cur_bfd = bfd_asymbol_bfd (*current)) == NULL)
2688 printf (_("could not determine the type of symbol number %ld\n"),
2689 count);
2691 else if (process_section_p ((* current)->section)
2692 && (dump_special_syms
2693 || !bfd_is_target_special_symbol (cur_bfd, *current)))
2695 const char *name = (*current)->name;
2697 if (do_demangle && name != NULL && *name != '\0')
2699 char *alloc;
2701 /* If we want to demangle the name, we demangle it
2702 here, and temporarily clobber it while calling
2703 bfd_print_symbol. FIXME: This is a gross hack. */
2704 alloc = bfd_demangle (cur_bfd, name, DMGL_ANSI | DMGL_PARAMS);
2705 if (alloc != NULL)
2706 (*current)->name = alloc;
2707 bfd_print_symbol (cur_bfd, stdout, *current,
2708 bfd_print_symbol_all);
2709 if (alloc != NULL)
2711 (*current)->name = name;
2712 free (alloc);
2715 else
2716 bfd_print_symbol (cur_bfd, stdout, *current,
2717 bfd_print_symbol_all);
2718 printf ("\n");
2721 current++;
2723 printf ("\n\n");
2726 static void
2727 dump_reloc_set (bfd *abfd, asection *sec, arelent **relpp, long relcount)
2729 arelent **p;
2730 char *last_filename, *last_functionname;
2731 unsigned int last_line;
2733 /* Get column headers lined up reasonably. */
2735 static int width;
2737 if (width == 0)
2739 char buf[30];
2741 bfd_sprintf_vma (abfd, buf, (bfd_vma) -1);
2742 width = strlen (buf) - 7;
2744 printf ("OFFSET %*s TYPE %*s VALUE \n", width, "", 12, "");
2747 last_filename = NULL;
2748 last_functionname = NULL;
2749 last_line = 0;
2751 for (p = relpp; relcount && *p != NULL; p++, relcount--)
2753 arelent *q = *p;
2754 const char *filename, *functionname;
2755 unsigned int line;
2756 const char *sym_name;
2757 const char *section_name;
2759 if (start_address != (bfd_vma) -1
2760 && q->address < start_address)
2761 continue;
2762 if (stop_address != (bfd_vma) -1
2763 && q->address > stop_address)
2764 continue;
2766 if (with_line_numbers
2767 && sec != NULL
2768 && bfd_find_nearest_line (abfd, sec, syms, q->address,
2769 &filename, &functionname, &line))
2771 if (functionname != NULL
2772 && (last_functionname == NULL
2773 || strcmp (functionname, last_functionname) != 0))
2775 printf ("%s():\n", functionname);
2776 if (last_functionname != NULL)
2777 free (last_functionname);
2778 last_functionname = xstrdup (functionname);
2781 if (line > 0
2782 && (line != last_line
2783 || (filename != NULL
2784 && last_filename != NULL
2785 && strcmp (filename, last_filename) != 0)))
2787 printf ("%s:%u\n", filename == NULL ? "???" : filename, line);
2788 last_line = line;
2789 if (last_filename != NULL)
2790 free (last_filename);
2791 if (filename == NULL)
2792 last_filename = NULL;
2793 else
2794 last_filename = xstrdup (filename);
2798 if (q->sym_ptr_ptr && *q->sym_ptr_ptr)
2800 sym_name = (*(q->sym_ptr_ptr))->name;
2801 section_name = (*(q->sym_ptr_ptr))->section->name;
2803 else
2805 sym_name = NULL;
2806 section_name = NULL;
2809 bfd_printf_vma (abfd, q->address);
2810 if (q->howto == NULL)
2811 printf (" *unknown* ");
2812 else if (q->howto->name)
2813 printf (" %-16s ", q->howto->name);
2814 else
2815 printf (" %-16d ", q->howto->type);
2816 if (sym_name)
2817 objdump_print_symname (abfd, NULL, *q->sym_ptr_ptr);
2818 else
2820 if (section_name == NULL)
2821 section_name = "*unknown*";
2822 printf ("[%s]", section_name);
2825 if (q->addend)
2827 printf ("+0x");
2828 bfd_printf_vma (abfd, q->addend);
2831 printf ("\n");
2835 static void
2836 dump_relocs_in_section (bfd *abfd,
2837 asection *section,
2838 void *dummy ATTRIBUTE_UNUSED)
2840 arelent **relpp;
2841 long relcount;
2842 long relsize;
2844 if ( bfd_is_abs_section (section)
2845 || bfd_is_und_section (section)
2846 || bfd_is_com_section (section)
2847 || (! process_section_p (section))
2848 || ((section->flags & SEC_RELOC) == 0))
2849 return;
2851 relsize = bfd_get_reloc_upper_bound (abfd, section);
2852 if (relsize < 0)
2853 bfd_fatal (bfd_get_filename (abfd));
2855 printf ("RELOCATION RECORDS FOR [%s]:", section->name);
2857 if (relsize == 0)
2859 printf (" (none)\n\n");
2860 return;
2863 relpp = xmalloc (relsize);
2864 relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
2866 if (relcount < 0)
2867 bfd_fatal (bfd_get_filename (abfd));
2868 else if (relcount == 0)
2869 printf (" (none)\n\n");
2870 else
2872 printf ("\n");
2873 dump_reloc_set (abfd, section, relpp, relcount);
2874 printf ("\n\n");
2876 free (relpp);
2879 static void
2880 dump_relocs (bfd *abfd)
2882 bfd_map_over_sections (abfd, dump_relocs_in_section, NULL);
2885 static void
2886 dump_dynamic_relocs (bfd *abfd)
2888 long relsize;
2889 arelent **relpp;
2890 long relcount;
2892 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2893 if (relsize < 0)
2894 bfd_fatal (bfd_get_filename (abfd));
2896 printf ("DYNAMIC RELOCATION RECORDS");
2898 if (relsize == 0)
2899 printf (" (none)\n\n");
2900 else
2902 relpp = xmalloc (relsize);
2903 relcount = bfd_canonicalize_dynamic_reloc (abfd, relpp, dynsyms);
2905 if (relcount < 0)
2906 bfd_fatal (bfd_get_filename (abfd));
2907 else if (relcount == 0)
2908 printf (" (none)\n\n");
2909 else
2911 printf ("\n");
2912 dump_reloc_set (abfd, NULL, relpp, relcount);
2913 printf ("\n\n");
2915 free (relpp);
2919 /* Creates a table of paths, to search for source files. */
2921 static void
2922 add_include_path (const char *path)
2924 if (path[0] == 0)
2925 return;
2926 include_path_count++;
2927 include_paths = xrealloc (include_paths,
2928 include_path_count * sizeof (*include_paths));
2929 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2930 if (path[1] == ':' && path[2] == 0)
2931 path = concat (path, ".", (const char *) 0);
2932 #endif
2933 include_paths[include_path_count - 1] = path;
2936 static void
2937 adjust_addresses (bfd *abfd ATTRIBUTE_UNUSED,
2938 asection *section,
2939 void *arg)
2941 if ((section->flags & SEC_DEBUGGING) == 0)
2943 bfd_boolean *has_reloc_p = (bfd_boolean *) arg;
2944 section->vma += adjust_section_vma;
2945 if (*has_reloc_p)
2946 section->lma += adjust_section_vma;
2950 /* Dump selected contents of ABFD. */
2952 static void
2953 dump_bfd (bfd *abfd)
2955 /* If we are adjusting section VMA's, change them all now. Changing
2956 the BFD information is a hack. However, we must do it, or
2957 bfd_find_nearest_line will not do the right thing. */
2958 if (adjust_section_vma != 0)
2960 bfd_boolean has_reloc = (abfd->flags & HAS_RELOC);
2961 bfd_map_over_sections (abfd, adjust_addresses, &has_reloc);
2964 if (! dump_debugging_tags)
2965 printf (_("\n%s: file format %s\n"), bfd_get_filename (abfd),
2966 abfd->xvec->name);
2967 if (dump_ar_hdrs)
2968 print_arelt_descr (stdout, abfd, TRUE);
2969 if (dump_file_header)
2970 dump_bfd_header (abfd);
2971 if (dump_private_headers)
2972 dump_bfd_private_header (abfd);
2973 if (! dump_debugging_tags)
2974 putchar ('\n');
2975 if (dump_section_headers)
2976 dump_headers (abfd);
2978 if (dump_symtab
2979 || dump_reloc_info
2980 || disassemble
2981 || dump_debugging
2982 || dump_dwarf_section_info)
2983 syms = slurp_symtab (abfd);
2984 if (dump_dynamic_symtab || dump_dynamic_reloc_info
2985 || (disassemble && bfd_get_dynamic_symtab_upper_bound (abfd) > 0))
2986 dynsyms = slurp_dynamic_symtab (abfd);
2987 if (disassemble)
2989 synthcount = bfd_get_synthetic_symtab (abfd, symcount, syms,
2990 dynsymcount, dynsyms, &synthsyms);
2991 if (synthcount < 0)
2992 synthcount = 0;
2995 if (dump_symtab)
2996 dump_symbols (abfd, FALSE);
2997 if (dump_dynamic_symtab)
2998 dump_symbols (abfd, TRUE);
2999 if (dump_dwarf_section_info)
3000 dump_dwarf (abfd);
3001 if (dump_stab_section_info)
3002 dump_stabs (abfd);
3003 if (dump_reloc_info && ! disassemble)
3004 dump_relocs (abfd);
3005 if (dump_dynamic_reloc_info && ! disassemble)
3006 dump_dynamic_relocs (abfd);
3007 if (dump_section_contents)
3008 dump_data (abfd);
3009 if (disassemble)
3010 disassemble_data (abfd);
3012 if (dump_debugging)
3014 void *dhandle;
3016 dhandle = read_debugging_info (abfd, syms, symcount, TRUE);
3017 if (dhandle != NULL)
3019 if (!print_debugging_info (stdout, dhandle, abfd, syms,
3020 bfd_demangle,
3021 dump_debugging_tags ? TRUE : FALSE))
3023 non_fatal (_("%s: printing debugging information failed"),
3024 bfd_get_filename (abfd));
3025 exit_status = 1;
3028 /* PR 6483: If there was no STABS or IEEE debug
3029 info in the file, try DWARF instead. */
3030 else if (! dump_dwarf_section_info)
3032 dump_dwarf (abfd);
3036 if (syms)
3038 free (syms);
3039 syms = NULL;
3042 if (dynsyms)
3044 free (dynsyms);
3045 dynsyms = NULL;
3048 if (synthsyms)
3050 free (synthsyms);
3051 synthsyms = NULL;
3054 symcount = 0;
3055 dynsymcount = 0;
3056 synthcount = 0;
3059 static void
3060 display_bfd (bfd *abfd)
3062 char **matching;
3064 if (bfd_check_format_matches (abfd, bfd_object, &matching))
3066 dump_bfd (abfd);
3067 return;
3070 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3072 nonfatal (bfd_get_filename (abfd));
3073 list_matching_formats (matching);
3074 free (matching);
3075 return;
3078 if (bfd_get_error () != bfd_error_file_not_recognized)
3080 nonfatal (bfd_get_filename (abfd));
3081 return;
3084 if (bfd_check_format_matches (abfd, bfd_core, &matching))
3086 dump_bfd (abfd);
3087 return;
3090 nonfatal (bfd_get_filename (abfd));
3092 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3094 list_matching_formats (matching);
3095 free (matching);
3099 static void
3100 display_file (char *filename, char *target)
3102 bfd *file;
3103 bfd *arfile = NULL;
3105 if (get_file_size (filename) < 1)
3107 exit_status = 1;
3108 return;
3111 file = bfd_openr (filename, target);
3112 if (file == NULL)
3114 nonfatal (filename);
3115 return;
3118 /* If the file is an archive, process all of its elements. */
3119 if (bfd_check_format (file, bfd_archive))
3121 bfd *last_arfile = NULL;
3123 printf (_("In archive %s:\n"), bfd_get_filename (file));
3124 for (;;)
3126 bfd_set_error (bfd_error_no_error);
3128 arfile = bfd_openr_next_archived_file (file, arfile);
3129 if (arfile == NULL)
3131 if (bfd_get_error () != bfd_error_no_more_archived_files)
3132 nonfatal (bfd_get_filename (file));
3133 break;
3136 display_bfd (arfile);
3138 if (last_arfile != NULL)
3139 bfd_close (last_arfile);
3140 last_arfile = arfile;
3143 if (last_arfile != NULL)
3144 bfd_close (last_arfile);
3146 else
3147 display_bfd (file);
3149 bfd_close (file);
3153 main (int argc, char **argv)
3155 int c;
3156 char *target = default_target;
3157 bfd_boolean seenflag = FALSE;
3159 #if defined (HAVE_SETLOCALE)
3160 #if defined (HAVE_LC_MESSAGES)
3161 setlocale (LC_MESSAGES, "");
3162 #endif
3163 setlocale (LC_CTYPE, "");
3164 #endif
3166 bindtextdomain (PACKAGE, LOCALEDIR);
3167 textdomain (PACKAGE);
3169 program_name = *argv;
3170 xmalloc_set_program_name (program_name);
3172 START_PROGRESS (program_name, 0);
3174 expandargv (&argc, &argv);
3176 bfd_init ();
3177 set_default_bfd_target ();
3179 while ((c = getopt_long (argc, argv, "pib:m:M:VvCdDlfFaHhrRtTxsSI:j:wE:zgeGW",
3180 long_options, (int *) 0))
3181 != EOF)
3183 switch (c)
3185 case 0:
3186 break; /* We've been given a long option. */
3187 case 'm':
3188 machine = optarg;
3189 break;
3190 case 'M':
3191 if (disassembler_options)
3192 /* Ignore potential memory leak for now. */
3193 disassembler_options = concat (disassembler_options, ",",
3194 optarg, (const char *) NULL);
3195 else
3196 disassembler_options = optarg;
3197 break;
3198 case 'j':
3199 if (only_used == only_size)
3201 only_size += 8;
3202 only = xrealloc (only, only_size * sizeof (char *));
3204 only [only_used++] = optarg;
3205 break;
3206 case 'F':
3207 display_file_offsets = TRUE;
3208 break;
3209 case 'l':
3210 with_line_numbers = TRUE;
3211 break;
3212 case 'b':
3213 target = optarg;
3214 break;
3215 case 'C':
3216 do_demangle = TRUE;
3217 if (optarg != NULL)
3219 enum demangling_styles style;
3221 style = cplus_demangle_name_to_style (optarg);
3222 if (style == unknown_demangling)
3223 fatal (_("unknown demangling style `%s'"),
3224 optarg);
3226 cplus_demangle_set_style (style);
3228 break;
3229 case 'w':
3230 wide_output = TRUE;
3231 break;
3232 case OPTION_ADJUST_VMA:
3233 adjust_section_vma = parse_vma (optarg, "--adjust-vma");
3234 break;
3235 case OPTION_START_ADDRESS:
3236 start_address = parse_vma (optarg, "--start-address");
3237 if ((stop_address != (bfd_vma) -1) && stop_address <= start_address)
3238 fatal (_("error: the start address should be before the end address"));
3239 break;
3240 case OPTION_STOP_ADDRESS:
3241 stop_address = parse_vma (optarg, "--stop-address");
3242 if ((start_address != (bfd_vma) -1) && stop_address <= start_address)
3243 fatal (_("error: the stop address should be after the start address"));
3244 break;
3245 case 'E':
3246 if (strcmp (optarg, "B") == 0)
3247 endian = BFD_ENDIAN_BIG;
3248 else if (strcmp (optarg, "L") == 0)
3249 endian = BFD_ENDIAN_LITTLE;
3250 else
3252 non_fatal (_("unrecognized -E option"));
3253 usage (stderr, 1);
3255 break;
3256 case OPTION_ENDIAN:
3257 if (strncmp (optarg, "big", strlen (optarg)) == 0)
3258 endian = BFD_ENDIAN_BIG;
3259 else if (strncmp (optarg, "little", strlen (optarg)) == 0)
3260 endian = BFD_ENDIAN_LITTLE;
3261 else
3263 non_fatal (_("unrecognized --endian type `%s'"), optarg);
3264 usage (stderr, 1);
3266 break;
3268 case 'f':
3269 dump_file_header = TRUE;
3270 seenflag = TRUE;
3271 break;
3272 case 'i':
3273 formats_info = TRUE;
3274 seenflag = TRUE;
3275 break;
3276 case 'I':
3277 add_include_path (optarg);
3278 break;
3279 case 'p':
3280 dump_private_headers = TRUE;
3281 seenflag = TRUE;
3282 break;
3283 case 'x':
3284 dump_private_headers = TRUE;
3285 dump_symtab = TRUE;
3286 dump_reloc_info = TRUE;
3287 dump_file_header = TRUE;
3288 dump_ar_hdrs = TRUE;
3289 dump_section_headers = TRUE;
3290 seenflag = TRUE;
3291 break;
3292 case 't':
3293 dump_symtab = TRUE;
3294 seenflag = TRUE;
3295 break;
3296 case 'T':
3297 dump_dynamic_symtab = TRUE;
3298 seenflag = TRUE;
3299 break;
3300 case 'd':
3301 disassemble = TRUE;
3302 seenflag = TRUE;
3303 break;
3304 case 'z':
3305 disassemble_zeroes = TRUE;
3306 break;
3307 case 'D':
3308 disassemble = TRUE;
3309 disassemble_all = TRUE;
3310 seenflag = TRUE;
3311 break;
3312 case 'S':
3313 disassemble = TRUE;
3314 with_source_code = TRUE;
3315 seenflag = TRUE;
3316 break;
3317 case 'g':
3318 dump_debugging = 1;
3319 seenflag = TRUE;
3320 break;
3321 case 'e':
3322 dump_debugging = 1;
3323 dump_debugging_tags = 1;
3324 do_demangle = TRUE;
3325 seenflag = TRUE;
3326 break;
3327 case 'W':
3328 dump_dwarf_section_info = TRUE;
3329 seenflag = TRUE;
3330 do_debug_info = 1;
3331 do_debug_abbrevs = 1;
3332 do_debug_lines = 1;
3333 do_debug_pubnames = 1;
3334 do_debug_aranges = 1;
3335 do_debug_ranges = 1;
3336 do_debug_frames = 1;
3337 do_debug_macinfo = 1;
3338 do_debug_str = 1;
3339 do_debug_loc = 1;
3340 break;
3341 case 'G':
3342 dump_stab_section_info = TRUE;
3343 seenflag = TRUE;
3344 break;
3345 case 's':
3346 dump_section_contents = TRUE;
3347 seenflag = TRUE;
3348 break;
3349 case 'r':
3350 dump_reloc_info = TRUE;
3351 seenflag = TRUE;
3352 break;
3353 case 'R':
3354 dump_dynamic_reloc_info = TRUE;
3355 seenflag = TRUE;
3356 break;
3357 case 'a':
3358 dump_ar_hdrs = TRUE;
3359 seenflag = TRUE;
3360 break;
3361 case 'h':
3362 dump_section_headers = TRUE;
3363 seenflag = TRUE;
3364 break;
3365 case 'H':
3366 usage (stdout, 0);
3367 seenflag = TRUE;
3368 case 'v':
3369 case 'V':
3370 show_version = TRUE;
3371 seenflag = TRUE;
3372 break;
3374 default:
3375 usage (stderr, 1);
3379 if (show_version)
3380 print_version ("objdump");
3382 if (!seenflag)
3383 usage (stderr, 2);
3385 if (formats_info)
3386 exit_status = display_info ();
3387 else
3389 if (optind == argc)
3390 display_file ("a.out", target);
3391 else
3392 for (; optind < argc;)
3393 display_file (argv[optind++], target);
3396 END_PROGRESS (program_name);
3398 return exit_status;