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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, 2009, 2010, 2011
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 "elfcomm.h"
59 #include "dwarf.h"
60 #include "getopt.h"
61 #include "safe-ctype.h"
62 #include "dis-asm.h"
63 #include "libiberty.h"
64 #include "demangle.h"
65 #include "filenames.h"
66 #include "debug.h"
67 #include "budbg.h"
68 #include "objdump.h"
70 #ifdef HAVE_MMAP
71 #include <sys/mman.h>
72 #endif
74 #include <sys/stat.h>
76 /* Internal headers for the ELF .stab-dump code - sorry. */
77 #define BYTES_IN_WORD 32
78 #include "aout/aout64.h"
80 /* Exit status. */
81 static int exit_status = 0;
83 static char *default_target = NULL; /* Default at runtime. */
85 /* The following variables are set based on arguments passed on the
86 command line. */
87 static int show_version = 0; /* Show the version number. */
88 static int dump_section_contents; /* -s */
89 static int dump_section_headers; /* -h */
90 static bfd_boolean dump_file_header; /* -f */
91 static int dump_symtab; /* -t */
92 static int dump_dynamic_symtab; /* -T */
93 static int dump_reloc_info; /* -r */
94 static int dump_dynamic_reloc_info; /* -R */
95 static int dump_ar_hdrs; /* -a */
96 static int dump_private_headers; /* -p */
97 static char *dump_private_options; /* -P */
98 static int prefix_addresses; /* --prefix-addresses */
99 static int with_line_numbers; /* -l */
100 static bfd_boolean with_source_code; /* -S */
101 static int show_raw_insn; /* --show-raw-insn */
102 static int dump_dwarf_section_info; /* --dwarf */
103 static int dump_stab_section_info; /* --stabs */
104 static int do_demangle; /* -C, --demangle */
105 static bfd_boolean disassemble; /* -d */
106 static bfd_boolean disassemble_all; /* -D */
107 static int disassemble_zeroes; /* --disassemble-zeroes */
108 static bfd_boolean formats_info; /* -i */
109 static int wide_output; /* -w */
110 static int insn_width; /* --insn-width */
111 static bfd_vma start_address = (bfd_vma) -1; /* --start-address */
112 static bfd_vma stop_address = (bfd_vma) -1; /* --stop-address */
113 static int dump_debugging; /* --debugging */
114 static int dump_debugging_tags; /* --debugging-tags */
115 static int suppress_bfd_header;
116 static int dump_special_syms = 0; /* --special-syms */
117 static bfd_vma adjust_section_vma = 0; /* --adjust-vma */
118 static int file_start_context = 0; /* --file-start-context */
119 static bfd_boolean display_file_offsets;/* -F */
120 static const char *prefix; /* --prefix */
121 static int prefix_strip; /* --prefix-strip */
122 static size_t prefix_length;
124 /* A structure to record the sections mentioned in -j switches. */
125 struct only
127 const char * name; /* The name of the section. */
128 bfd_boolean seen; /* A flag to indicate that the section has been found in one or more input files. */
129 struct only * next; /* Pointer to the next structure in the list. */
131 /* Pointer to an array of 'only' structures.
132 This pointer is NULL if the -j switch has not been used. */
133 static struct only * only_list = NULL;
135 /* Variables for handling include file path table. */
136 static const char **include_paths;
137 static int include_path_count;
139 /* Extra info to pass to the section disassembler and address printing
140 function. */
141 struct objdump_disasm_info
143 bfd * abfd;
144 asection * sec;
145 bfd_boolean require_sec;
146 arelent ** dynrelbuf;
147 long dynrelcount;
148 disassembler_ftype disassemble_fn;
149 arelent * reloc;
152 /* Architecture to disassemble for, or default if NULL. */
153 static char *machine = NULL;
155 /* Target specific options to the disassembler. */
156 static char *disassembler_options = NULL;
158 /* Endianness to disassemble for, or default if BFD_ENDIAN_UNKNOWN. */
159 static enum bfd_endian endian = BFD_ENDIAN_UNKNOWN;
161 /* The symbol table. */
162 static asymbol **syms;
164 /* Number of symbols in `syms'. */
165 static long symcount = 0;
167 /* The sorted symbol table. */
168 static asymbol **sorted_syms;
170 /* Number of symbols in `sorted_syms'. */
171 static long sorted_symcount = 0;
173 /* The dynamic symbol table. */
174 static asymbol **dynsyms;
176 /* The synthetic symbol table. */
177 static asymbol *synthsyms;
178 static long synthcount = 0;
180 /* Number of symbols in `dynsyms'. */
181 static long dynsymcount = 0;
183 static bfd_byte *stabs;
184 static bfd_size_type stab_size;
186 static char *strtab;
187 static bfd_size_type stabstr_size;
189 static bfd_boolean is_relocatable = FALSE;
191 /* Handlers for -P/--private. */
192 static const struct objdump_private_desc * const objdump_private_vectors[] =
194 OBJDUMP_PRIVATE_VECTORS
195 NULL
198 static void
199 usage (FILE *stream, int status)
201 fprintf (stream, _("Usage: %s <option(s)> <file(s)>\n"), program_name);
202 fprintf (stream, _(" Display information from object <file(s)>.\n"));
203 fprintf (stream, _(" At least one of the following switches must be given:\n"));
204 fprintf (stream, _("\
205 -a, --archive-headers Display archive header information\n\
206 -f, --file-headers Display the contents of the overall file header\n\
207 -p, --private-headers Display object format specific file header contents\n\
208 -P, --private=OPT,OPT... Display object format specific contents\n\
209 -h, --[section-]headers Display the contents of the section headers\n\
210 -x, --all-headers Display the contents of all headers\n\
211 -d, --disassemble Display assembler contents of executable sections\n\
212 -D, --disassemble-all Display assembler contents of all sections\n\
213 -S, --source Intermix source code with disassembly\n\
214 -s, --full-contents Display the full contents of all sections requested\n\
215 -g, --debugging Display debug information in object file\n\
216 -e, --debugging-tags Display debug information using ctags style\n\
217 -G, --stabs Display (in raw form) any STABS info in the file\n\
218 -W[lLiaprmfFsoRt] or\n\
219 --dwarf[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,\n\
220 =frames-interp,=str,=loc,=Ranges,=pubtypes,\n\
221 =gdb_index,=trace_info,=trace_abbrev,=trace_aranges]\n\
222 Display DWARF info in the file\n\
223 -t, --syms Display the contents of the symbol table(s)\n\
224 -T, --dynamic-syms Display the contents of the dynamic symbol table\n\
225 -r, --reloc Display the relocation entries in the file\n\
226 -R, --dynamic-reloc Display the dynamic relocation entries in the file\n\
227 @<file> Read options from <file>\n\
228 -v, --version Display this program's version number\n\
229 -i, --info List object formats and architectures supported\n\
230 -H, --help Display this information\n\
231 "));
232 if (status != 2)
234 const struct objdump_private_desc * const *desc;
236 fprintf (stream, _("\n The following switches are optional:\n"));
237 fprintf (stream, _("\
238 -b, --target=BFDNAME Specify the target object format as BFDNAME\n\
239 -m, --architecture=MACHINE Specify the target architecture as MACHINE\n\
240 -j, --section=NAME Only display information for section NAME\n\
241 -M, --disassembler-options=OPT Pass text OPT on to the disassembler\n\
242 -EB --endian=big Assume big endian format when disassembling\n\
243 -EL --endian=little Assume little endian format when disassembling\n\
244 --file-start-context Include context from start of file (with -S)\n\
245 -I, --include=DIR Add DIR to search list for source files\n\
246 -l, --line-numbers Include line numbers and filenames in output\n\
247 -F, --file-offsets Include file offsets when displaying information\n\
248 -C, --demangle[=STYLE] Decode mangled/processed symbol names\n\
249 The STYLE, if specified, can be `auto', `gnu',\n\
250 `lucid', `arm', `hp', `edg', `gnu-v3', `java'\n\
251 or `gnat'\n\
252 -w, --wide Format output for more than 80 columns\n\
253 -z, --disassemble-zeroes Do not skip blocks of zeroes when disassembling\n\
254 --start-address=ADDR Only process data whose address is >= ADDR\n\
255 --stop-address=ADDR Only process data whose address is <= ADDR\n\
256 --prefix-addresses Print complete address alongside disassembly\n\
257 --[no-]show-raw-insn Display hex alongside symbolic disassembly\n\
258 --insn-width=WIDTH Display WIDTH bytes on a single line for -d\n\
259 --adjust-vma=OFFSET Add OFFSET to all displayed section addresses\n\
260 --special-syms Include special symbols in symbol dumps\n\
261 --prefix=PREFIX Add PREFIX to absolute paths for -S\n\
262 --prefix-strip=LEVEL Strip initial directory names for -S\n"));
263 fprintf (stream, _("\
264 --dwarf-depth=N Do not display DIEs at depth N or greater\n\
265 --dwarf-start=N Display DIEs starting with N, at the same depth\n\
266 or deeper\n\n"));
267 list_supported_targets (program_name, stream);
268 list_supported_architectures (program_name, stream);
270 disassembler_usage (stream);
272 if (objdump_private_vectors[0] != NULL)
274 fprintf (stream,
275 _("\nOptions supported for -P/--private switch:\n"));
276 for (desc = objdump_private_vectors; *desc != NULL; desc++)
277 (*desc)->help (stream);
280 if (REPORT_BUGS_TO[0] && status == 0)
281 fprintf (stream, _("Report bugs to %s.\n"), REPORT_BUGS_TO);
282 exit (status);
285 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
286 enum option_values
288 OPTION_ENDIAN=150,
289 OPTION_START_ADDRESS,
290 OPTION_STOP_ADDRESS,
291 OPTION_DWARF,
292 OPTION_PREFIX,
293 OPTION_PREFIX_STRIP,
294 OPTION_INSN_WIDTH,
295 OPTION_ADJUST_VMA,
296 OPTION_DWARF_DEPTH,
297 OPTION_DWARF_START
300 static struct option long_options[]=
302 {"adjust-vma", required_argument, NULL, OPTION_ADJUST_VMA},
303 {"all-headers", no_argument, NULL, 'x'},
304 {"private-headers", no_argument, NULL, 'p'},
305 {"private", required_argument, NULL, 'P'},
306 {"architecture", required_argument, NULL, 'm'},
307 {"archive-headers", no_argument, NULL, 'a'},
308 {"debugging", no_argument, NULL, 'g'},
309 {"debugging-tags", no_argument, NULL, 'e'},
310 {"demangle", optional_argument, NULL, 'C'},
311 {"disassemble", no_argument, NULL, 'd'},
312 {"disassemble-all", no_argument, NULL, 'D'},
313 {"disassembler-options", required_argument, NULL, 'M'},
314 {"disassemble-zeroes", no_argument, NULL, 'z'},
315 {"dynamic-reloc", no_argument, NULL, 'R'},
316 {"dynamic-syms", no_argument, NULL, 'T'},
317 {"endian", required_argument, NULL, OPTION_ENDIAN},
318 {"file-headers", no_argument, NULL, 'f'},
319 {"file-offsets", no_argument, NULL, 'F'},
320 {"file-start-context", no_argument, &file_start_context, 1},
321 {"full-contents", no_argument, NULL, 's'},
322 {"headers", no_argument, NULL, 'h'},
323 {"help", no_argument, NULL, 'H'},
324 {"info", no_argument, NULL, 'i'},
325 {"line-numbers", no_argument, NULL, 'l'},
326 {"no-show-raw-insn", no_argument, &show_raw_insn, -1},
327 {"prefix-addresses", no_argument, &prefix_addresses, 1},
328 {"reloc", no_argument, NULL, 'r'},
329 {"section", required_argument, NULL, 'j'},
330 {"section-headers", no_argument, NULL, 'h'},
331 {"show-raw-insn", no_argument, &show_raw_insn, 1},
332 {"source", no_argument, NULL, 'S'},
333 {"special-syms", no_argument, &dump_special_syms, 1},
334 {"include", required_argument, NULL, 'I'},
335 {"dwarf", optional_argument, NULL, OPTION_DWARF},
336 {"stabs", no_argument, NULL, 'G'},
337 {"start-address", required_argument, NULL, OPTION_START_ADDRESS},
338 {"stop-address", required_argument, NULL, OPTION_STOP_ADDRESS},
339 {"syms", no_argument, NULL, 't'},
340 {"target", required_argument, NULL, 'b'},
341 {"version", no_argument, NULL, 'V'},
342 {"wide", no_argument, NULL, 'w'},
343 {"prefix", required_argument, NULL, OPTION_PREFIX},
344 {"prefix-strip", required_argument, NULL, OPTION_PREFIX_STRIP},
345 {"insn-width", required_argument, NULL, OPTION_INSN_WIDTH},
346 {"dwarf-depth", required_argument, 0, OPTION_DWARF_DEPTH},
347 {"dwarf-start", required_argument, 0, OPTION_DWARF_START},
348 {0, no_argument, 0, 0}
351 static void
352 nonfatal (const char *msg)
354 bfd_nonfatal (msg);
355 exit_status = 1;
358 /* Returns TRUE if the specified section should be dumped. */
360 static bfd_boolean
361 process_section_p (asection * section)
363 struct only * only;
365 if (only_list == NULL)
366 return TRUE;
368 for (only = only_list; only; only = only->next)
369 if (strcmp (only->name, section->name) == 0)
371 only->seen = TRUE;
372 return TRUE;
375 return FALSE;
378 /* Add an entry to the 'only' list. */
380 static void
381 add_only (char * name)
383 struct only * only;
385 /* First check to make sure that we do not
386 already have an entry for this name. */
387 for (only = only_list; only; only = only->next)
388 if (strcmp (only->name, name) == 0)
389 return;
391 only = xmalloc (sizeof * only);
392 only->name = name;
393 only->seen = FALSE;
394 only->next = only_list;
395 only_list = only;
398 /* Release the memory used by the 'only' list.
399 PR 11225: Issue a warning message for unseen sections.
400 Only do this if none of the sections were seen. This is mainly to support
401 tools like the GAS testsuite where an object file is dumped with a list of
402 generic section names known to be present in a range of different file
403 formats. */
405 static void
406 free_only_list (void)
408 bfd_boolean at_least_one_seen = FALSE;
409 struct only * only;
410 struct only * next;
412 if (only_list == NULL)
413 return;
415 for (only = only_list; only; only = only->next)
416 if (only->seen)
418 at_least_one_seen = TRUE;
419 break;
422 for (only = only_list; only; only = next)
424 if (! at_least_one_seen)
426 non_fatal (_("section '%s' mentioned in a -j option, "
427 "but not found in any input file"),
428 only->name);
429 exit_status = 1;
431 next = only->next;
432 free (only);
437 static void
438 dump_section_header (bfd *abfd, asection *section,
439 void *ignored ATTRIBUTE_UNUSED)
441 char *comma = "";
442 unsigned int opb = bfd_octets_per_byte (abfd);
444 /* Ignore linker created section. See elfNN_ia64_object_p in
445 bfd/elfxx-ia64.c. */
446 if (section->flags & SEC_LINKER_CREATED)
447 return;
449 /* PR 10413: Skip sections that we are ignoring. */
450 if (! process_section_p (section))
451 return;
453 printf ("%3d %-13s %08lx ", section->index,
454 bfd_get_section_name (abfd, section),
455 (unsigned long) bfd_section_size (abfd, section) / opb);
456 bfd_printf_vma (abfd, bfd_get_section_vma (abfd, section));
457 printf (" ");
458 bfd_printf_vma (abfd, section->lma);
459 printf (" %08lx 2**%u", (unsigned long) section->filepos,
460 bfd_get_section_alignment (abfd, section));
461 if (! wide_output)
462 printf ("\n ");
463 printf (" ");
465 #define PF(x, y) \
466 if (section->flags & x) { printf ("%s%s", comma, y); comma = ", "; }
468 PF (SEC_HAS_CONTENTS, "CONTENTS");
469 PF (SEC_ALLOC, "ALLOC");
470 PF (SEC_CONSTRUCTOR, "CONSTRUCTOR");
471 PF (SEC_LOAD, "LOAD");
472 PF (SEC_RELOC, "RELOC");
473 PF (SEC_READONLY, "READONLY");
474 PF (SEC_CODE, "CODE");
475 PF (SEC_DATA, "DATA");
476 PF (SEC_ROM, "ROM");
477 PF (SEC_DEBUGGING, "DEBUGGING");
478 PF (SEC_NEVER_LOAD, "NEVER_LOAD");
479 PF (SEC_EXCLUDE, "EXCLUDE");
480 PF (SEC_SORT_ENTRIES, "SORT_ENTRIES");
481 if (bfd_get_arch (abfd) == bfd_arch_tic54x)
483 PF (SEC_TIC54X_BLOCK, "BLOCK");
484 PF (SEC_TIC54X_CLINK, "CLINK");
486 PF (SEC_SMALL_DATA, "SMALL_DATA");
487 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
488 PF (SEC_COFF_SHARED, "SHARED");
489 PF (SEC_THREAD_LOCAL, "THREAD_LOCAL");
490 PF (SEC_GROUP, "GROUP");
492 if ((section->flags & SEC_LINK_ONCE) != 0)
494 const char *ls;
495 struct coff_comdat_info *comdat;
497 switch (section->flags & SEC_LINK_DUPLICATES)
499 default:
500 abort ();
501 case SEC_LINK_DUPLICATES_DISCARD:
502 ls = "LINK_ONCE_DISCARD";
503 break;
504 case SEC_LINK_DUPLICATES_ONE_ONLY:
505 ls = "LINK_ONCE_ONE_ONLY";
506 break;
507 case SEC_LINK_DUPLICATES_SAME_SIZE:
508 ls = "LINK_ONCE_SAME_SIZE";
509 break;
510 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
511 ls = "LINK_ONCE_SAME_CONTENTS";
512 break;
514 printf ("%s%s", comma, ls);
516 comdat = bfd_coff_get_comdat_section (abfd, section);
517 if (comdat != NULL)
518 printf (" (COMDAT %s %ld)", comdat->name, comdat->symbol);
520 comma = ", ";
523 printf ("\n");
524 #undef PF
527 static void
528 dump_headers (bfd *abfd)
530 printf (_("Sections:\n"));
532 #ifndef BFD64
533 printf (_("Idx Name Size VMA LMA File off Algn"));
534 #else
535 /* With BFD64, non-ELF returns -1 and wants always 64 bit addresses. */
536 if (bfd_get_arch_size (abfd) == 32)
537 printf (_("Idx Name Size VMA LMA File off Algn"));
538 else
539 printf (_("Idx Name Size VMA LMA File off Algn"));
540 #endif
542 if (wide_output)
543 printf (_(" Flags"));
544 printf ("\n");
546 bfd_map_over_sections (abfd, dump_section_header, NULL);
549 static asymbol **
550 slurp_symtab (bfd *abfd)
552 asymbol **sy = NULL;
553 long storage;
555 if (!(bfd_get_file_flags (abfd) & HAS_SYMS))
557 symcount = 0;
558 return NULL;
561 storage = bfd_get_symtab_upper_bound (abfd);
562 if (storage < 0)
563 bfd_fatal (bfd_get_filename (abfd));
564 if (storage)
565 sy = (asymbol **) xmalloc (storage);
567 symcount = bfd_canonicalize_symtab (abfd, sy);
568 if (symcount < 0)
569 bfd_fatal (bfd_get_filename (abfd));
570 return sy;
573 /* Read in the dynamic symbols. */
575 static asymbol **
576 slurp_dynamic_symtab (bfd *abfd)
578 asymbol **sy = NULL;
579 long storage;
581 storage = bfd_get_dynamic_symtab_upper_bound (abfd);
582 if (storage < 0)
584 if (!(bfd_get_file_flags (abfd) & DYNAMIC))
586 non_fatal (_("%s: not a dynamic object"), bfd_get_filename (abfd));
587 exit_status = 1;
588 dynsymcount = 0;
589 return NULL;
592 bfd_fatal (bfd_get_filename (abfd));
594 if (storage)
595 sy = (asymbol **) xmalloc (storage);
597 dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, sy);
598 if (dynsymcount < 0)
599 bfd_fatal (bfd_get_filename (abfd));
600 return sy;
603 /* Filter out (in place) symbols that are useless for disassembly.
604 COUNT is the number of elements in SYMBOLS.
605 Return the number of useful symbols. */
607 static long
608 remove_useless_symbols (asymbol **symbols, long count)
610 asymbol **in_ptr = symbols, **out_ptr = symbols;
612 while (--count >= 0)
614 asymbol *sym = *in_ptr++;
616 if (sym->name == NULL || sym->name[0] == '\0')
617 continue;
618 if (sym->flags & (BSF_DEBUGGING | BSF_SECTION_SYM))
619 continue;
620 if (bfd_is_und_section (sym->section)
621 || bfd_is_com_section (sym->section))
622 continue;
624 *out_ptr++ = sym;
626 return out_ptr - symbols;
629 /* Sort symbols into value order. */
631 static int
632 compare_symbols (const void *ap, const void *bp)
634 const asymbol *a = * (const asymbol **) ap;
635 const asymbol *b = * (const asymbol **) bp;
636 const char *an;
637 const char *bn;
638 size_t anl;
639 size_t bnl;
640 bfd_boolean af;
641 bfd_boolean bf;
642 flagword aflags;
643 flagword bflags;
645 if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
646 return 1;
647 else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
648 return -1;
650 if (a->section > b->section)
651 return 1;
652 else if (a->section < b->section)
653 return -1;
655 an = bfd_asymbol_name (a);
656 bn = bfd_asymbol_name (b);
657 anl = strlen (an);
658 bnl = strlen (bn);
660 /* The symbols gnu_compiled and gcc2_compiled convey no real
661 information, so put them after other symbols with the same value. */
662 af = (strstr (an, "gnu_compiled") != NULL
663 || strstr (an, "gcc2_compiled") != NULL);
664 bf = (strstr (bn, "gnu_compiled") != NULL
665 || strstr (bn, "gcc2_compiled") != NULL);
667 if (af && ! bf)
668 return 1;
669 if (! af && bf)
670 return -1;
672 /* We use a heuristic for the file name, to try to sort it after
673 more useful symbols. It may not work on non Unix systems, but it
674 doesn't really matter; the only difference is precisely which
675 symbol names get printed. */
677 #define file_symbol(s, sn, snl) \
678 (((s)->flags & BSF_FILE) != 0 \
679 || ((sn)[(snl) - 2] == '.' \
680 && ((sn)[(snl) - 1] == 'o' \
681 || (sn)[(snl) - 1] == 'a')))
683 af = file_symbol (a, an, anl);
684 bf = file_symbol (b, bn, bnl);
686 if (af && ! bf)
687 return 1;
688 if (! af && bf)
689 return -1;
691 /* Try to sort global symbols before local symbols before function
692 symbols before debugging symbols. */
694 aflags = a->flags;
695 bflags = b->flags;
697 if ((aflags & BSF_DEBUGGING) != (bflags & BSF_DEBUGGING))
699 if ((aflags & BSF_DEBUGGING) != 0)
700 return 1;
701 else
702 return -1;
704 if ((aflags & BSF_FUNCTION) != (bflags & BSF_FUNCTION))
706 if ((aflags & BSF_FUNCTION) != 0)
707 return -1;
708 else
709 return 1;
711 if ((aflags & BSF_LOCAL) != (bflags & BSF_LOCAL))
713 if ((aflags & BSF_LOCAL) != 0)
714 return 1;
715 else
716 return -1;
718 if ((aflags & BSF_GLOBAL) != (bflags & BSF_GLOBAL))
720 if ((aflags & BSF_GLOBAL) != 0)
721 return -1;
722 else
723 return 1;
726 /* Symbols that start with '.' might be section names, so sort them
727 after symbols that don't start with '.'. */
728 if (an[0] == '.' && bn[0] != '.')
729 return 1;
730 if (an[0] != '.' && bn[0] == '.')
731 return -1;
733 /* Finally, if we can't distinguish them in any other way, try to
734 get consistent results by sorting the symbols by name. */
735 return strcmp (an, bn);
738 /* Sort relocs into address order. */
740 static int
741 compare_relocs (const void *ap, const void *bp)
743 const arelent *a = * (const arelent **) ap;
744 const arelent *b = * (const arelent **) bp;
746 if (a->address > b->address)
747 return 1;
748 else if (a->address < b->address)
749 return -1;
751 /* So that associated relocations tied to the same address show up
752 in the correct order, we don't do any further sorting. */
753 if (a > b)
754 return 1;
755 else if (a < b)
756 return -1;
757 else
758 return 0;
761 /* Print an address (VMA) to the output stream in INFO.
762 If SKIP_ZEROES is TRUE, omit leading zeroes. */
764 static void
765 objdump_print_value (bfd_vma vma, struct disassemble_info *inf,
766 bfd_boolean skip_zeroes)
768 char buf[30];
769 char *p;
770 struct objdump_disasm_info *aux;
772 aux = (struct objdump_disasm_info *) inf->application_data;
773 bfd_sprintf_vma (aux->abfd, buf, vma);
774 if (! skip_zeroes)
775 p = buf;
776 else
778 for (p = buf; *p == '0'; ++p)
780 if (*p == '\0')
781 --p;
783 (*inf->fprintf_func) (inf->stream, "%s", p);
786 /* Print the name of a symbol. */
788 static void
789 objdump_print_symname (bfd *abfd, struct disassemble_info *inf,
790 asymbol *sym)
792 char *alloc;
793 const char *name;
795 alloc = NULL;
796 name = bfd_asymbol_name (sym);
797 if (do_demangle && name[0] != '\0')
799 /* Demangle the name. */
800 alloc = bfd_demangle (abfd, name, DMGL_ANSI | DMGL_PARAMS);
801 if (alloc != NULL)
802 name = alloc;
805 if (inf != NULL)
806 (*inf->fprintf_func) (inf->stream, "%s", name);
807 else
808 printf ("%s", name);
810 if (alloc != NULL)
811 free (alloc);
814 /* Locate a symbol given a bfd and a section (from INFO->application_data),
815 and a VMA. If INFO->application_data->require_sec is TRUE, then always
816 require the symbol to be in the section. Returns NULL if there is no
817 suitable symbol. If PLACE is not NULL, then *PLACE is set to the index
818 of the symbol in sorted_syms. */
820 static asymbol *
821 find_symbol_for_address (bfd_vma vma,
822 struct disassemble_info *inf,
823 long *place)
825 /* @@ Would it speed things up to cache the last two symbols returned,
826 and maybe their address ranges? For many processors, only one memory
827 operand can be present at a time, so the 2-entry cache wouldn't be
828 constantly churned by code doing heavy memory accesses. */
830 /* Indices in `sorted_syms'. */
831 long min = 0;
832 long max_count = sorted_symcount;
833 long thisplace;
834 struct objdump_disasm_info *aux;
835 bfd *abfd;
836 asection *sec;
837 unsigned int opb;
838 bfd_boolean want_section;
840 if (sorted_symcount < 1)
841 return NULL;
843 aux = (struct objdump_disasm_info *) inf->application_data;
844 abfd = aux->abfd;
845 sec = aux->sec;
846 opb = inf->octets_per_byte;
848 /* Perform a binary search looking for the closest symbol to the
849 required value. We are searching the range (min, max_count]. */
850 while (min + 1 < max_count)
852 asymbol *sym;
854 thisplace = (max_count + min) / 2;
855 sym = sorted_syms[thisplace];
857 if (bfd_asymbol_value (sym) > vma)
858 max_count = thisplace;
859 else if (bfd_asymbol_value (sym) < vma)
860 min = thisplace;
861 else
863 min = thisplace;
864 break;
868 /* The symbol we want is now in min, the low end of the range we
869 were searching. If there are several symbols with the same
870 value, we want the first one. */
871 thisplace = min;
872 while (thisplace > 0
873 && (bfd_asymbol_value (sorted_syms[thisplace])
874 == bfd_asymbol_value (sorted_syms[thisplace - 1])))
875 --thisplace;
877 /* Prefer a symbol in the current section if we have multple symbols
878 with the same value, as can occur with overlays or zero size
879 sections. */
880 min = thisplace;
881 while (min < max_count
882 && (bfd_asymbol_value (sorted_syms[min])
883 == bfd_asymbol_value (sorted_syms[thisplace])))
885 if (sorted_syms[min]->section == sec
886 && inf->symbol_is_valid (sorted_syms[min], inf))
888 thisplace = min;
890 if (place != NULL)
891 *place = thisplace;
893 return sorted_syms[thisplace];
895 ++min;
898 /* If the file is relocatable, and the symbol could be from this
899 section, prefer a symbol from this section over symbols from
900 others, even if the other symbol's value might be closer.
902 Note that this may be wrong for some symbol references if the
903 sections have overlapping memory ranges, but in that case there's
904 no way to tell what's desired without looking at the relocation
905 table.
907 Also give the target a chance to reject symbols. */
908 want_section = (aux->require_sec
909 || ((abfd->flags & HAS_RELOC) != 0
910 && vma >= bfd_get_section_vma (abfd, sec)
911 && vma < (bfd_get_section_vma (abfd, sec)
912 + bfd_section_size (abfd, sec) / opb)));
913 if ((sorted_syms[thisplace]->section != sec && want_section)
914 || ! inf->symbol_is_valid (sorted_syms[thisplace], inf))
916 long i;
917 long newplace = sorted_symcount;
919 for (i = min - 1; i >= 0; i--)
921 if ((sorted_syms[i]->section == sec || !want_section)
922 && inf->symbol_is_valid (sorted_syms[i], inf))
924 if (newplace == sorted_symcount)
925 newplace = i;
927 if (bfd_asymbol_value (sorted_syms[i])
928 != bfd_asymbol_value (sorted_syms[newplace]))
929 break;
931 /* Remember this symbol and keep searching until we reach
932 an earlier address. */
933 newplace = i;
937 if (newplace != sorted_symcount)
938 thisplace = newplace;
939 else
941 /* We didn't find a good symbol with a smaller value.
942 Look for one with a larger value. */
943 for (i = thisplace + 1; i < sorted_symcount; i++)
945 if ((sorted_syms[i]->section == sec || !want_section)
946 && inf->symbol_is_valid (sorted_syms[i], inf))
948 thisplace = i;
949 break;
954 if ((sorted_syms[thisplace]->section != sec && want_section)
955 || ! inf->symbol_is_valid (sorted_syms[thisplace], inf))
956 /* There is no suitable symbol. */
957 return NULL;
960 if (place != NULL)
961 *place = thisplace;
963 return sorted_syms[thisplace];
966 /* Print an address and the offset to the nearest symbol. */
968 static void
969 objdump_print_addr_with_sym (bfd *abfd, asection *sec, asymbol *sym,
970 bfd_vma vma, struct disassemble_info *inf,
971 bfd_boolean skip_zeroes)
973 objdump_print_value (vma, inf, skip_zeroes);
975 if (sym == NULL)
977 bfd_vma secaddr;
979 (*inf->fprintf_func) (inf->stream, " <%s",
980 bfd_get_section_name (abfd, sec));
981 secaddr = bfd_get_section_vma (abfd, sec);
982 if (vma < secaddr)
984 (*inf->fprintf_func) (inf->stream, "-0x");
985 objdump_print_value (secaddr - vma, inf, TRUE);
987 else if (vma > secaddr)
989 (*inf->fprintf_func) (inf->stream, "+0x");
990 objdump_print_value (vma - secaddr, inf, TRUE);
992 (*inf->fprintf_func) (inf->stream, ">");
994 else
996 (*inf->fprintf_func) (inf->stream, " <");
997 objdump_print_symname (abfd, inf, sym);
998 if (bfd_asymbol_value (sym) > vma)
1000 (*inf->fprintf_func) (inf->stream, "-0x");
1001 objdump_print_value (bfd_asymbol_value (sym) - vma, inf, TRUE);
1003 else if (vma > bfd_asymbol_value (sym))
1005 (*inf->fprintf_func) (inf->stream, "+0x");
1006 objdump_print_value (vma - bfd_asymbol_value (sym), inf, TRUE);
1008 (*inf->fprintf_func) (inf->stream, ">");
1011 if (display_file_offsets)
1012 inf->fprintf_func (inf->stream, _(" (File Offset: 0x%lx)"),
1013 (long int)(sec->filepos + (vma - sec->vma)));
1016 /* Print an address (VMA), symbolically if possible.
1017 If SKIP_ZEROES is TRUE, don't output leading zeroes. */
1019 static void
1020 objdump_print_addr (bfd_vma vma,
1021 struct disassemble_info *inf,
1022 bfd_boolean skip_zeroes)
1024 struct objdump_disasm_info *aux;
1025 asymbol *sym = NULL;
1026 bfd_boolean skip_find = FALSE;
1028 aux = (struct objdump_disasm_info *) inf->application_data;
1030 if (sorted_symcount < 1)
1032 (*inf->fprintf_func) (inf->stream, "0x");
1033 objdump_print_value (vma, inf, skip_zeroes);
1035 if (display_file_offsets)
1036 inf->fprintf_func (inf->stream, _(" (File Offset: 0x%lx)"),
1037 (long int)(aux->sec->filepos + (vma - aux->sec->vma)));
1038 return;
1041 if (aux->reloc != NULL
1042 && aux->reloc->sym_ptr_ptr != NULL
1043 && * aux->reloc->sym_ptr_ptr != NULL)
1045 sym = * aux->reloc->sym_ptr_ptr;
1047 /* Adjust the vma to the reloc. */
1048 vma += bfd_asymbol_value (sym);
1050 if (bfd_is_und_section (bfd_get_section (sym)))
1051 skip_find = TRUE;
1054 if (!skip_find)
1055 sym = find_symbol_for_address (vma, inf, NULL);
1057 objdump_print_addr_with_sym (aux->abfd, aux->sec, sym, vma, inf,
1058 skip_zeroes);
1061 /* Print VMA to INFO. This function is passed to the disassembler
1062 routine. */
1064 static void
1065 objdump_print_address (bfd_vma vma, struct disassemble_info *inf)
1067 objdump_print_addr (vma, inf, ! prefix_addresses);
1070 /* Determine if the given address has a symbol associated with it. */
1072 static int
1073 objdump_symbol_at_address (bfd_vma vma, struct disassemble_info * inf)
1075 asymbol * sym;
1077 sym = find_symbol_for_address (vma, inf, NULL);
1079 return (sym != NULL && (bfd_asymbol_value (sym) == vma));
1082 /* Hold the last function name and the last line number we displayed
1083 in a disassembly. */
1085 static char *prev_functionname;
1086 static unsigned int prev_line;
1088 /* We keep a list of all files that we have seen when doing a
1089 disassembly with source, so that we know how much of the file to
1090 display. This can be important for inlined functions. */
1092 struct print_file_list
1094 struct print_file_list *next;
1095 const char *filename;
1096 const char *modname;
1097 const char *map;
1098 size_t mapsize;
1099 const char **linemap;
1100 unsigned maxline;
1101 unsigned last_line;
1102 int first;
1105 static struct print_file_list *print_files;
1107 /* The number of preceding context lines to show when we start
1108 displaying a file for the first time. */
1110 #define SHOW_PRECEDING_CONTEXT_LINES (5)
1112 /* Read a complete file into memory. */
1114 static const char *
1115 slurp_file (const char *fn, size_t *size)
1117 #ifdef HAVE_MMAP
1118 int ps = getpagesize ();
1119 size_t msize;
1120 #endif
1121 const char *map;
1122 struct stat st;
1123 int fd = open (fn, O_RDONLY | O_BINARY);
1125 if (fd < 0)
1126 return NULL;
1127 if (fstat (fd, &st) < 0)
1128 return NULL;
1129 *size = st.st_size;
1130 #ifdef HAVE_MMAP
1131 msize = (*size + ps - 1) & ~(ps - 1);
1132 map = mmap (NULL, msize, PROT_READ, MAP_SHARED, fd, 0);
1133 if (map != (char *)-1L)
1135 close(fd);
1136 return map;
1138 #endif
1139 map = (const char *) malloc (*size);
1140 if (!map || (size_t) read (fd, (char *)map, *size) != *size)
1142 free ((void *)map);
1143 map = NULL;
1145 close (fd);
1146 return map;
1149 #define line_map_decrease 5
1151 /* Precompute array of lines for a mapped file. */
1153 static const char **
1154 index_file (const char *map, size_t size, unsigned int *maxline)
1156 const char *p, *lstart, *end;
1157 int chars_per_line = 45; /* First iteration will use 40. */
1158 unsigned int lineno;
1159 const char **linemap = NULL;
1160 unsigned long line_map_size = 0;
1162 lineno = 0;
1163 lstart = map;
1164 end = map + size;
1166 for (p = map; p < end; p++)
1168 if (*p == '\n')
1170 if (p + 1 < end && p[1] == '\r')
1171 p++;
1173 else if (*p == '\r')
1175 if (p + 1 < end && p[1] == '\n')
1176 p++;
1178 else
1179 continue;
1181 /* End of line found. */
1183 if (linemap == NULL || line_map_size < lineno + 1)
1185 unsigned long newsize;
1187 chars_per_line -= line_map_decrease;
1188 if (chars_per_line <= 1)
1189 chars_per_line = 1;
1190 line_map_size = size / chars_per_line + 1;
1191 if (line_map_size < lineno + 1)
1192 line_map_size = lineno + 1;
1193 newsize = line_map_size * sizeof (char *);
1194 linemap = (const char **) xrealloc (linemap, newsize);
1197 linemap[lineno++] = lstart;
1198 lstart = p + 1;
1201 *maxline = lineno;
1202 return linemap;
1205 /* Tries to open MODNAME, and if successful adds a node to print_files
1206 linked list and returns that node. Returns NULL on failure. */
1208 static struct print_file_list *
1209 try_print_file_open (const char *origname, const char *modname)
1211 struct print_file_list *p;
1213 p = (struct print_file_list *) xmalloc (sizeof (struct print_file_list));
1215 p->map = slurp_file (modname, &p->mapsize);
1216 if (p->map == NULL)
1218 free (p);
1219 return NULL;
1222 p->linemap = index_file (p->map, p->mapsize, &p->maxline);
1223 p->last_line = 0;
1224 p->filename = origname;
1225 p->modname = modname;
1226 p->next = print_files;
1227 p->first = 1;
1228 print_files = p;
1229 return p;
1232 /* If the the source file, as described in the symtab, is not found
1233 try to locate it in one of the paths specified with -I
1234 If found, add location to print_files linked list. */
1236 static struct print_file_list *
1237 update_source_path (const char *filename)
1239 struct print_file_list *p;
1240 const char *fname;
1241 int i;
1243 p = try_print_file_open (filename, filename);
1244 if (p != NULL)
1245 return p;
1247 if (include_path_count == 0)
1248 return NULL;
1250 /* Get the name of the file. */
1251 fname = lbasename (filename);
1253 /* If file exists under a new path, we need to add it to the list
1254 so that show_line knows about it. */
1255 for (i = 0; i < include_path_count; i++)
1257 char *modname = concat (include_paths[i], "/", fname, (const char *) 0);
1259 p = try_print_file_open (filename, modname);
1260 if (p)
1261 return p;
1263 free (modname);
1266 return NULL;
1269 /* Print a source file line. */
1271 static void
1272 print_line (struct print_file_list *p, unsigned int linenum)
1274 const char *l;
1275 size_t len;
1277 --linenum;
1278 if (linenum >= p->maxline)
1279 return;
1280 l = p->linemap [linenum];
1281 /* Test fwrite return value to quiet glibc warning. */
1282 len = strcspn (l, "\n\r");
1283 if (len == 0 || fwrite (l, len, 1, stdout) == 1)
1284 putchar ('\n');
1287 /* Print a range of source code lines. */
1289 static void
1290 dump_lines (struct print_file_list *p, unsigned int start, unsigned int end)
1292 if (p->map == NULL)
1293 return;
1294 while (start <= end)
1296 print_line (p, start);
1297 start++;
1301 /* Show the line number, or the source line, in a disassembly
1302 listing. */
1304 static void
1305 show_line (bfd *abfd, asection *section, bfd_vma addr_offset)
1307 const char *filename;
1308 const char *functionname;
1309 unsigned int linenumber;
1310 bfd_boolean reloc;
1312 if (! with_line_numbers && ! with_source_code)
1313 return;
1315 if (! bfd_find_nearest_line (abfd, section, syms, addr_offset, &filename,
1316 &functionname, &linenumber))
1317 return;
1319 if (filename != NULL && *filename == '\0')
1320 filename = NULL;
1321 if (functionname != NULL && *functionname == '\0')
1322 functionname = NULL;
1324 if (filename
1325 && IS_ABSOLUTE_PATH (filename)
1326 && prefix)
1328 char *path_up;
1329 const char *fname = filename;
1330 char *path = (char *) alloca (prefix_length + PATH_MAX + 1);
1332 if (prefix_length)
1333 memcpy (path, prefix, prefix_length);
1334 path_up = path + prefix_length;
1336 /* Build relocated filename, stripping off leading directories
1337 from the initial filename if requested. */
1338 if (prefix_strip > 0)
1340 int level = 0;
1341 const char *s;
1343 /* Skip selected directory levels. */
1344 for (s = fname + 1; *s != '\0' && level < prefix_strip; s++)
1345 if (IS_DIR_SEPARATOR(*s))
1347 fname = s;
1348 level++;
1352 /* Update complete filename. */
1353 strncpy (path_up, fname, PATH_MAX);
1354 path_up[PATH_MAX] = '\0';
1356 filename = path;
1357 reloc = TRUE;
1359 else
1360 reloc = FALSE;
1362 if (with_line_numbers)
1364 if (functionname != NULL
1365 && (prev_functionname == NULL
1366 || strcmp (functionname, prev_functionname) != 0))
1367 printf ("%s():\n", functionname);
1368 if (linenumber > 0 && linenumber != prev_line)
1369 printf ("%s:%u\n", filename == NULL ? "???" : filename, linenumber);
1372 if (with_source_code
1373 && filename != NULL
1374 && linenumber > 0)
1376 struct print_file_list **pp, *p;
1377 unsigned l;
1379 for (pp = &print_files; *pp != NULL; pp = &(*pp)->next)
1380 if (filename_cmp ((*pp)->filename, filename) == 0)
1381 break;
1382 p = *pp;
1384 if (p == NULL)
1386 if (reloc)
1387 filename = xstrdup (filename);
1388 p = update_source_path (filename);
1391 if (p != NULL && linenumber != p->last_line)
1393 if (file_start_context && p->first)
1394 l = 1;
1395 else
1397 l = linenumber - SHOW_PRECEDING_CONTEXT_LINES;
1398 if (l >= linenumber)
1399 l = 1;
1400 if (p->last_line >= l && p->last_line <= linenumber)
1401 l = p->last_line + 1;
1403 dump_lines (p, l, linenumber);
1404 p->last_line = linenumber;
1405 p->first = 0;
1409 if (functionname != NULL
1410 && (prev_functionname == NULL
1411 || strcmp (functionname, prev_functionname) != 0))
1413 if (prev_functionname != NULL)
1414 free (prev_functionname);
1415 prev_functionname = (char *) xmalloc (strlen (functionname) + 1);
1416 strcpy (prev_functionname, functionname);
1419 if (linenumber > 0 && linenumber != prev_line)
1420 prev_line = linenumber;
1423 /* Pseudo FILE object for strings. */
1424 typedef struct
1426 char *buffer;
1427 size_t pos;
1428 size_t alloc;
1429 } SFILE;
1431 /* sprintf to a "stream". */
1433 static int ATTRIBUTE_PRINTF_2
1434 objdump_sprintf (SFILE *f, const char *format, ...)
1436 size_t n;
1437 va_list args;
1439 while (1)
1441 size_t space = f->alloc - f->pos;
1443 va_start (args, format);
1444 n = vsnprintf (f->buffer + f->pos, space, format, args);
1445 va_end (args);
1447 if (space > n)
1448 break;
1450 f->alloc = (f->alloc + n) * 2;
1451 f->buffer = (char *) xrealloc (f->buffer, f->alloc);
1453 f->pos += n;
1455 return n;
1458 /* The number of zeroes we want to see before we start skipping them.
1459 The number is arbitrarily chosen. */
1461 #define DEFAULT_SKIP_ZEROES 8
1463 /* The number of zeroes to skip at the end of a section. If the
1464 number of zeroes at the end is between SKIP_ZEROES_AT_END and
1465 SKIP_ZEROES, they will be disassembled. If there are fewer than
1466 SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic
1467 attempt to avoid disassembling zeroes inserted by section
1468 alignment. */
1470 #define DEFAULT_SKIP_ZEROES_AT_END 3
1472 /* Disassemble some data in memory between given values. */
1474 static void
1475 disassemble_bytes (struct disassemble_info * inf,
1476 disassembler_ftype disassemble_fn,
1477 bfd_boolean insns,
1478 bfd_byte * data,
1479 bfd_vma start_offset,
1480 bfd_vma stop_offset,
1481 bfd_vma rel_offset,
1482 arelent *** relppp,
1483 arelent ** relppend)
1485 struct objdump_disasm_info *aux;
1486 asection *section;
1487 int octets_per_line;
1488 int skip_addr_chars;
1489 bfd_vma addr_offset;
1490 unsigned int opb = inf->octets_per_byte;
1491 unsigned int skip_zeroes = inf->skip_zeroes;
1492 unsigned int skip_zeroes_at_end = inf->skip_zeroes_at_end;
1493 int octets = opb;
1494 SFILE sfile;
1496 aux = (struct objdump_disasm_info *) inf->application_data;
1497 section = aux->sec;
1499 sfile.alloc = 120;
1500 sfile.buffer = (char *) xmalloc (sfile.alloc);
1501 sfile.pos = 0;
1503 if (insn_width)
1504 octets_per_line = insn_width;
1505 else if (insns)
1506 octets_per_line = 4;
1507 else
1508 octets_per_line = 16;
1510 /* Figure out how many characters to skip at the start of an
1511 address, to make the disassembly look nicer. We discard leading
1512 zeroes in chunks of 4, ensuring that there is always a leading
1513 zero remaining. */
1514 skip_addr_chars = 0;
1515 if (! prefix_addresses)
1517 char buf[30];
1519 bfd_sprintf_vma (aux->abfd, buf, section->vma + section->size / opb);
1521 while (buf[skip_addr_chars] == '0')
1522 ++skip_addr_chars;
1524 /* Don't discard zeros on overflow. */
1525 if (buf[skip_addr_chars] == '\0' && section->vma != 0)
1526 skip_addr_chars = 0;
1528 if (skip_addr_chars != 0)
1529 skip_addr_chars = (skip_addr_chars - 1) & -4;
1532 inf->insn_info_valid = 0;
1534 addr_offset = start_offset;
1535 while (addr_offset < stop_offset)
1537 bfd_vma z;
1538 bfd_boolean need_nl = FALSE;
1539 int previous_octets;
1541 /* Remember the length of the previous instruction. */
1542 previous_octets = octets;
1543 octets = 0;
1545 /* Make sure we don't use relocs from previous instructions. */
1546 aux->reloc = NULL;
1548 /* If we see more than SKIP_ZEROES octets of zeroes, we just
1549 print `...'. */
1550 for (z = addr_offset * opb; z < stop_offset * opb; z++)
1551 if (data[z] != 0)
1552 break;
1553 if (! disassemble_zeroes
1554 && (inf->insn_info_valid == 0
1555 || inf->branch_delay_insns == 0)
1556 && (z - addr_offset * opb >= skip_zeroes
1557 || (z == stop_offset * opb &&
1558 z - addr_offset * opb < skip_zeroes_at_end)))
1560 /* If there are more nonzero octets to follow, we only skip
1561 zeroes in multiples of 4, to try to avoid running over
1562 the start of an instruction which happens to start with
1563 zero. */
1564 if (z != stop_offset * opb)
1565 z = addr_offset * opb + ((z - addr_offset * opb) &~ 3);
1567 octets = z - addr_offset * opb;
1569 /* If we are going to display more data, and we are displaying
1570 file offsets, then tell the user how many zeroes we skip
1571 and the file offset from where we resume dumping. */
1572 if (display_file_offsets && ((addr_offset + (octets / opb)) < stop_offset))
1573 printf ("\t... (skipping %d zeroes, resuming at file offset: 0x%lx)\n",
1574 octets / opb,
1575 (unsigned long) (section->filepos
1576 + (addr_offset + (octets / opb))));
1577 else
1578 printf ("\t...\n");
1580 else
1582 char buf[50];
1583 int bpc = 0;
1584 int pb = 0;
1586 if (with_line_numbers || with_source_code)
1587 show_line (aux->abfd, section, addr_offset);
1589 if (! prefix_addresses)
1591 char *s;
1593 bfd_sprintf_vma (aux->abfd, buf, section->vma + addr_offset);
1594 for (s = buf + skip_addr_chars; *s == '0'; s++)
1595 *s = ' ';
1596 if (*s == '\0')
1597 *--s = '0';
1598 printf ("%s:\t", buf + skip_addr_chars);
1600 else
1602 aux->require_sec = TRUE;
1603 objdump_print_address (section->vma + addr_offset, inf);
1604 aux->require_sec = FALSE;
1605 putchar (' ');
1608 if (insns)
1610 sfile.pos = 0;
1611 inf->fprintf_func = (fprintf_ftype) objdump_sprintf;
1612 inf->stream = &sfile;
1613 inf->bytes_per_line = 0;
1614 inf->bytes_per_chunk = 0;
1615 inf->flags = disassemble_all ? DISASSEMBLE_DATA : 0;
1616 if (machine)
1617 inf->flags |= USER_SPECIFIED_MACHINE_TYPE;
1619 if (inf->disassembler_needs_relocs
1620 && (bfd_get_file_flags (aux->abfd) & EXEC_P) == 0
1621 && (bfd_get_file_flags (aux->abfd) & DYNAMIC) == 0
1622 && *relppp < relppend)
1624 bfd_signed_vma distance_to_rel;
1626 distance_to_rel = (**relppp)->address
1627 - (rel_offset + addr_offset);
1629 /* Check to see if the current reloc is associated with
1630 the instruction that we are about to disassemble. */
1631 if (distance_to_rel == 0
1632 /* FIXME: This is wrong. We are trying to catch
1633 relocs that are addressed part way through the
1634 current instruction, as might happen with a packed
1635 VLIW instruction. Unfortunately we do not know the
1636 length of the current instruction since we have not
1637 disassembled it yet. Instead we take a guess based
1638 upon the length of the previous instruction. The
1639 proper solution is to have a new target-specific
1640 disassembler function which just returns the length
1641 of an instruction at a given address without trying
1642 to display its disassembly. */
1643 || (distance_to_rel > 0
1644 && distance_to_rel < (bfd_signed_vma) (previous_octets/ opb)))
1646 inf->flags |= INSN_HAS_RELOC;
1647 aux->reloc = **relppp;
1651 octets = (*disassemble_fn) (section->vma + addr_offset, inf);
1652 inf->fprintf_func = (fprintf_ftype) fprintf;
1653 inf->stream = stdout;
1654 if (insn_width == 0 && inf->bytes_per_line != 0)
1655 octets_per_line = inf->bytes_per_line;
1656 if (octets < (int) opb)
1658 if (sfile.pos)
1659 printf ("%s\n", sfile.buffer);
1660 if (octets >= 0)
1662 non_fatal (_("disassemble_fn returned length %d"),
1663 octets);
1664 exit_status = 1;
1666 break;
1669 else
1671 bfd_vma j;
1673 octets = octets_per_line;
1674 if (addr_offset + octets / opb > stop_offset)
1675 octets = (stop_offset - addr_offset) * opb;
1677 for (j = addr_offset * opb; j < addr_offset * opb + octets; ++j)
1679 if (ISPRINT (data[j]))
1680 buf[j - addr_offset * opb] = data[j];
1681 else
1682 buf[j - addr_offset * opb] = '.';
1684 buf[j - addr_offset * opb] = '\0';
1687 if (prefix_addresses
1688 ? show_raw_insn > 0
1689 : show_raw_insn >= 0)
1691 bfd_vma j;
1693 /* If ! prefix_addresses and ! wide_output, we print
1694 octets_per_line octets per line. */
1695 pb = octets;
1696 if (pb > octets_per_line && ! prefix_addresses && ! wide_output)
1697 pb = octets_per_line;
1699 if (inf->bytes_per_chunk)
1700 bpc = inf->bytes_per_chunk;
1701 else
1702 bpc = 1;
1704 for (j = addr_offset * opb; j < addr_offset * opb + pb; j += bpc)
1706 int k;
1708 if (bpc > 1 && inf->display_endian == BFD_ENDIAN_LITTLE)
1710 for (k = bpc - 1; k >= 0; k--)
1711 printf ("%02x", (unsigned) data[j + k]);
1712 putchar (' ');
1714 else
1716 for (k = 0; k < bpc; k++)
1717 printf ("%02x", (unsigned) data[j + k]);
1718 putchar (' ');
1722 for (; pb < octets_per_line; pb += bpc)
1724 int k;
1726 for (k = 0; k < bpc; k++)
1727 printf (" ");
1728 putchar (' ');
1731 /* Separate raw data from instruction by extra space. */
1732 if (insns)
1733 putchar ('\t');
1734 else
1735 printf (" ");
1738 if (! insns)
1739 printf ("%s", buf);
1740 else if (sfile.pos)
1741 printf ("%s", sfile.buffer);
1743 if (prefix_addresses
1744 ? show_raw_insn > 0
1745 : show_raw_insn >= 0)
1747 while (pb < octets)
1749 bfd_vma j;
1750 char *s;
1752 putchar ('\n');
1753 j = addr_offset * opb + pb;
1755 bfd_sprintf_vma (aux->abfd, buf, section->vma + j / opb);
1756 for (s = buf + skip_addr_chars; *s == '0'; s++)
1757 *s = ' ';
1758 if (*s == '\0')
1759 *--s = '0';
1760 printf ("%s:\t", buf + skip_addr_chars);
1762 pb += octets_per_line;
1763 if (pb > octets)
1764 pb = octets;
1765 for (; j < addr_offset * opb + pb; j += bpc)
1767 int k;
1769 if (bpc > 1 && inf->display_endian == BFD_ENDIAN_LITTLE)
1771 for (k = bpc - 1; k >= 0; k--)
1772 printf ("%02x", (unsigned) data[j + k]);
1773 putchar (' ');
1775 else
1777 for (k = 0; k < bpc; k++)
1778 printf ("%02x", (unsigned) data[j + k]);
1779 putchar (' ');
1785 if (!wide_output)
1786 putchar ('\n');
1787 else
1788 need_nl = TRUE;
1791 while ((*relppp) < relppend
1792 && (**relppp)->address < rel_offset + addr_offset + octets / opb)
1794 if (dump_reloc_info || dump_dynamic_reloc_info)
1796 arelent *q;
1798 q = **relppp;
1800 if (wide_output)
1801 putchar ('\t');
1802 else
1803 printf ("\t\t\t");
1805 objdump_print_value (section->vma - rel_offset + q->address,
1806 inf, TRUE);
1808 if (q->howto == NULL)
1809 printf (": *unknown*\t");
1810 else if (q->howto->name)
1811 printf (": %s\t", q->howto->name);
1812 else
1813 printf (": %d\t", q->howto->type);
1815 if (q->sym_ptr_ptr == NULL || *q->sym_ptr_ptr == NULL)
1816 printf ("*unknown*");
1817 else
1819 const char *sym_name;
1821 sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
1822 if (sym_name != NULL && *sym_name != '\0')
1823 objdump_print_symname (aux->abfd, inf, *q->sym_ptr_ptr);
1824 else
1826 asection *sym_sec;
1828 sym_sec = bfd_get_section (*q->sym_ptr_ptr);
1829 sym_name = bfd_get_section_name (aux->abfd, sym_sec);
1830 if (sym_name == NULL || *sym_name == '\0')
1831 sym_name = "*unknown*";
1832 printf ("%s", sym_name);
1836 if (q->addend)
1838 printf ("+0x");
1839 objdump_print_value (q->addend, inf, TRUE);
1842 printf ("\n");
1843 need_nl = FALSE;
1845 ++(*relppp);
1848 if (need_nl)
1849 printf ("\n");
1851 addr_offset += octets / opb;
1854 free (sfile.buffer);
1857 static void
1858 disassemble_section (bfd *abfd, asection *section, void *inf)
1860 const struct elf_backend_data * bed;
1861 bfd_vma sign_adjust = 0;
1862 struct disassemble_info * pinfo = (struct disassemble_info *) inf;
1863 struct objdump_disasm_info * paux;
1864 unsigned int opb = pinfo->octets_per_byte;
1865 bfd_byte * data = NULL;
1866 bfd_size_type datasize = 0;
1867 arelent ** rel_pp = NULL;
1868 arelent ** rel_ppstart = NULL;
1869 arelent ** rel_ppend;
1870 unsigned long stop_offset;
1871 asymbol * sym = NULL;
1872 long place = 0;
1873 long rel_count;
1874 bfd_vma rel_offset;
1875 unsigned long addr_offset;
1877 /* Sections that do not contain machine
1878 code are not normally disassembled. */
1879 if (! disassemble_all
1880 && only_list == NULL
1881 && ((section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
1882 != (SEC_CODE | SEC_HAS_CONTENTS)))
1883 return;
1885 if (! process_section_p (section))
1886 return;
1888 datasize = bfd_get_section_size (section);
1889 if (datasize == 0)
1890 return;
1892 /* Decide which set of relocs to use. Load them if necessary. */
1893 paux = (struct objdump_disasm_info *) pinfo->application_data;
1894 if (paux->dynrelbuf)
1896 rel_pp = paux->dynrelbuf;
1897 rel_count = paux->dynrelcount;
1898 /* Dynamic reloc addresses are absolute, non-dynamic are section
1899 relative. REL_OFFSET specifies the reloc address corresponding
1900 to the start of this section. */
1901 rel_offset = section->vma;
1903 else
1905 rel_count = 0;
1906 rel_pp = NULL;
1907 rel_offset = 0;
1909 if ((section->flags & SEC_RELOC) != 0
1910 && (dump_reloc_info || pinfo->disassembler_needs_relocs))
1912 long relsize;
1914 relsize = bfd_get_reloc_upper_bound (abfd, section);
1915 if (relsize < 0)
1916 bfd_fatal (bfd_get_filename (abfd));
1918 if (relsize > 0)
1920 rel_ppstart = rel_pp = (arelent **) xmalloc (relsize);
1921 rel_count = bfd_canonicalize_reloc (abfd, section, rel_pp, syms);
1922 if (rel_count < 0)
1923 bfd_fatal (bfd_get_filename (abfd));
1925 /* Sort the relocs by address. */
1926 qsort (rel_pp, rel_count, sizeof (arelent *), compare_relocs);
1930 rel_ppend = rel_pp + rel_count;
1932 data = (bfd_byte *) xmalloc (datasize);
1934 bfd_get_section_contents (abfd, section, data, 0, datasize);
1936 paux->sec = section;
1937 pinfo->buffer = data;
1938 pinfo->buffer_vma = section->vma;
1939 pinfo->buffer_length = datasize;
1940 pinfo->section = section;
1942 if (start_address == (bfd_vma) -1
1943 || start_address < pinfo->buffer_vma)
1944 addr_offset = 0;
1945 else
1946 addr_offset = start_address - pinfo->buffer_vma;
1948 if (stop_address == (bfd_vma) -1)
1949 stop_offset = datasize / opb;
1950 else
1952 if (stop_address < pinfo->buffer_vma)
1953 stop_offset = 0;
1954 else
1955 stop_offset = stop_address - pinfo->buffer_vma;
1956 if (stop_offset > pinfo->buffer_length / opb)
1957 stop_offset = pinfo->buffer_length / opb;
1960 /* Skip over the relocs belonging to addresses below the
1961 start address. */
1962 while (rel_pp < rel_ppend
1963 && (*rel_pp)->address < rel_offset + addr_offset)
1964 ++rel_pp;
1966 if (addr_offset < stop_offset)
1967 printf (_("\nDisassembly of section %s:\n"), section->name);
1969 /* Find the nearest symbol forwards from our current position. */
1970 paux->require_sec = TRUE;
1971 sym = (asymbol *) find_symbol_for_address (section->vma + addr_offset,
1972 (struct disassemble_info *) inf,
1973 &place);
1974 paux->require_sec = FALSE;
1976 /* PR 9774: If the target used signed addresses then we must make
1977 sure that we sign extend the value that we calculate for 'addr'
1978 in the loop below. */
1979 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
1980 && (bed = get_elf_backend_data (abfd)) != NULL
1981 && bed->sign_extend_vma)
1982 sign_adjust = (bfd_vma) 1 << (bed->s->arch_size - 1);
1984 /* Disassemble a block of instructions up to the address associated with
1985 the symbol we have just found. Then print the symbol and find the
1986 next symbol on. Repeat until we have disassembled the entire section
1987 or we have reached the end of the address range we are interested in. */
1988 while (addr_offset < stop_offset)
1990 bfd_vma addr;
1991 asymbol *nextsym;
1992 unsigned long nextstop_offset;
1993 bfd_boolean insns;
1995 addr = section->vma + addr_offset;
1996 addr = ((addr & ((sign_adjust << 1) - 1)) ^ sign_adjust) - sign_adjust;
1998 if (sym != NULL && bfd_asymbol_value (sym) <= addr)
2000 int x;
2002 for (x = place;
2003 (x < sorted_symcount
2004 && (bfd_asymbol_value (sorted_syms[x]) <= addr));
2005 ++x)
2006 continue;
2008 pinfo->symbols = sorted_syms + place;
2009 pinfo->num_symbols = x - place;
2010 pinfo->symtab_pos = place;
2012 else
2014 pinfo->symbols = NULL;
2015 pinfo->num_symbols = 0;
2016 pinfo->symtab_pos = -1;
2019 if (! prefix_addresses)
2021 pinfo->fprintf_func (pinfo->stream, "\n");
2022 objdump_print_addr_with_sym (abfd, section, sym, addr,
2023 pinfo, FALSE);
2024 pinfo->fprintf_func (pinfo->stream, ":\n");
2027 if (sym != NULL && bfd_asymbol_value (sym) > addr)
2028 nextsym = sym;
2029 else if (sym == NULL)
2030 nextsym = NULL;
2031 else
2033 #define is_valid_next_sym(SYM) \
2034 ((SYM)->section == section \
2035 && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
2036 && pinfo->symbol_is_valid (SYM, pinfo))
2038 /* Search forward for the next appropriate symbol in
2039 SECTION. Note that all the symbols are sorted
2040 together into one big array, and that some sections
2041 may have overlapping addresses. */
2042 while (place < sorted_symcount
2043 && ! is_valid_next_sym (sorted_syms [place]))
2044 ++place;
2046 if (place >= sorted_symcount)
2047 nextsym = NULL;
2048 else
2049 nextsym = sorted_syms[place];
2052 if (sym != NULL && bfd_asymbol_value (sym) > addr)
2053 nextstop_offset = bfd_asymbol_value (sym) - section->vma;
2054 else if (nextsym == NULL)
2055 nextstop_offset = stop_offset;
2056 else
2057 nextstop_offset = bfd_asymbol_value (nextsym) - section->vma;
2059 if (nextstop_offset > stop_offset
2060 || nextstop_offset <= addr_offset)
2061 nextstop_offset = stop_offset;
2063 /* If a symbol is explicitly marked as being an object
2064 rather than a function, just dump the bytes without
2065 disassembling them. */
2066 if (disassemble_all
2067 || sym == NULL
2068 || sym->section != section
2069 || bfd_asymbol_value (sym) > addr
2070 || ((sym->flags & BSF_OBJECT) == 0
2071 && (strstr (bfd_asymbol_name (sym), "gnu_compiled")
2072 == NULL)
2073 && (strstr (bfd_asymbol_name (sym), "gcc2_compiled")
2074 == NULL))
2075 || (sym->flags & BSF_FUNCTION) != 0)
2076 insns = TRUE;
2077 else
2078 insns = FALSE;
2080 disassemble_bytes (pinfo, paux->disassemble_fn, insns, data,
2081 addr_offset, nextstop_offset,
2082 rel_offset, &rel_pp, rel_ppend);
2084 addr_offset = nextstop_offset;
2085 sym = nextsym;
2088 free (data);
2090 if (rel_ppstart != NULL)
2091 free (rel_ppstart);
2094 /* Disassemble the contents of an object file. */
2096 static void
2097 disassemble_data (bfd *abfd)
2099 struct disassemble_info disasm_info;
2100 struct objdump_disasm_info aux;
2101 long i;
2103 print_files = NULL;
2104 prev_functionname = NULL;
2105 prev_line = -1;
2107 /* We make a copy of syms to sort. We don't want to sort syms
2108 because that will screw up the relocs. */
2109 sorted_symcount = symcount ? symcount : dynsymcount;
2110 sorted_syms = (asymbol **) xmalloc ((sorted_symcount + synthcount)
2111 * sizeof (asymbol *));
2112 memcpy (sorted_syms, symcount ? syms : dynsyms,
2113 sorted_symcount * sizeof (asymbol *));
2115 sorted_symcount = remove_useless_symbols (sorted_syms, sorted_symcount);
2117 for (i = 0; i < synthcount; ++i)
2119 sorted_syms[sorted_symcount] = synthsyms + i;
2120 ++sorted_symcount;
2123 /* Sort the symbols into section and symbol order. */
2124 qsort (sorted_syms, sorted_symcount, sizeof (asymbol *), compare_symbols);
2126 init_disassemble_info (&disasm_info, stdout, (fprintf_ftype) fprintf);
2128 disasm_info.application_data = (void *) &aux;
2129 aux.abfd = abfd;
2130 aux.require_sec = FALSE;
2131 aux.dynrelbuf = NULL;
2132 aux.dynrelcount = 0;
2133 aux.reloc = NULL;
2135 disasm_info.print_address_func = objdump_print_address;
2136 disasm_info.symbol_at_address_func = objdump_symbol_at_address;
2138 if (machine != NULL)
2140 const bfd_arch_info_type *inf = bfd_scan_arch (machine);
2142 if (inf == NULL)
2143 fatal (_("can't use supplied machine %s"), machine);
2145 abfd->arch_info = inf;
2148 if (endian != BFD_ENDIAN_UNKNOWN)
2150 struct bfd_target *xvec;
2152 xvec = (struct bfd_target *) xmalloc (sizeof (struct bfd_target));
2153 memcpy (xvec, abfd->xvec, sizeof (struct bfd_target));
2154 xvec->byteorder = endian;
2155 abfd->xvec = xvec;
2158 /* Use libopcodes to locate a suitable disassembler. */
2159 aux.disassemble_fn = disassembler (abfd);
2160 if (!aux.disassemble_fn)
2162 non_fatal (_("can't disassemble for architecture %s\n"),
2163 bfd_printable_arch_mach (bfd_get_arch (abfd), 0));
2164 exit_status = 1;
2165 return;
2168 disasm_info.flavour = bfd_get_flavour (abfd);
2169 disasm_info.arch = bfd_get_arch (abfd);
2170 disasm_info.mach = bfd_get_mach (abfd);
2171 disasm_info.disassembler_options = disassembler_options;
2172 disasm_info.octets_per_byte = bfd_octets_per_byte (abfd);
2173 disasm_info.skip_zeroes = DEFAULT_SKIP_ZEROES;
2174 disasm_info.skip_zeroes_at_end = DEFAULT_SKIP_ZEROES_AT_END;
2175 disasm_info.disassembler_needs_relocs = FALSE;
2177 if (bfd_big_endian (abfd))
2178 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_BIG;
2179 else if (bfd_little_endian (abfd))
2180 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_LITTLE;
2181 else
2182 /* ??? Aborting here seems too drastic. We could default to big or little
2183 instead. */
2184 disasm_info.endian = BFD_ENDIAN_UNKNOWN;
2186 /* Allow the target to customize the info structure. */
2187 disassemble_init_for_target (& disasm_info);
2189 /* Pre-load the dynamic relocs if we are going
2190 to be dumping them along with the disassembly. */
2191 if (dump_dynamic_reloc_info)
2193 long relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2195 if (relsize < 0)
2196 bfd_fatal (bfd_get_filename (abfd));
2198 if (relsize > 0)
2200 aux.dynrelbuf = (arelent **) xmalloc (relsize);
2201 aux.dynrelcount = bfd_canonicalize_dynamic_reloc (abfd,
2202 aux.dynrelbuf,
2203 dynsyms);
2204 if (aux.dynrelcount < 0)
2205 bfd_fatal (bfd_get_filename (abfd));
2207 /* Sort the relocs by address. */
2208 qsort (aux.dynrelbuf, aux.dynrelcount, sizeof (arelent *),
2209 compare_relocs);
2212 disasm_info.symtab = sorted_syms;
2213 disasm_info.symtab_size = sorted_symcount;
2215 bfd_map_over_sections (abfd, disassemble_section, & disasm_info);
2217 if (aux.dynrelbuf != NULL)
2218 free (aux.dynrelbuf);
2219 free (sorted_syms);
2222 static int
2223 load_specific_debug_section (enum dwarf_section_display_enum debug,
2224 asection *sec, void *file)
2226 struct dwarf_section *section = &debug_displays [debug].section;
2227 bfd *abfd = (bfd *) file;
2228 bfd_boolean ret;
2230 /* If it is already loaded, do nothing. */
2231 if (section->start != NULL)
2232 return 1;
2234 section->address = 0;
2235 section->size = bfd_get_section_size (sec);
2236 section->start = NULL;
2237 ret = bfd_get_full_section_contents (abfd, sec, &section->start);
2239 if (! ret)
2241 free_debug_section (debug);
2242 printf (_("\nCan't get contents for section '%s'.\n"),
2243 section->name);
2244 return 0;
2247 if (is_relocatable && debug_displays [debug].relocate)
2249 /* We want to relocate the data we've already read (and
2250 decompressed), so we store a pointer to the data in
2251 the bfd_section, and tell it that the contents are
2252 already in memory. */
2253 sec->contents = section->start;
2254 sec->flags |= SEC_IN_MEMORY;
2255 sec->size = section->size;
2257 ret = bfd_simple_get_relocated_section_contents (abfd,
2258 sec,
2259 section->start,
2260 syms) != NULL;
2262 if (! ret)
2264 free_debug_section (debug);
2265 printf (_("\nCan't get contents for section '%s'.\n"),
2266 section->name);
2267 return 0;
2271 return 1;
2275 load_debug_section (enum dwarf_section_display_enum debug, void *file)
2277 struct dwarf_section *section = &debug_displays [debug].section;
2278 bfd *abfd = (bfd *) file;
2279 asection *sec;
2281 /* If it is already loaded, do nothing. */
2282 if (section->start != NULL)
2283 return 1;
2285 /* Locate the debug section. */
2286 sec = bfd_get_section_by_name (abfd, section->uncompressed_name);
2287 if (sec != NULL)
2288 section->name = section->uncompressed_name;
2289 else
2291 sec = bfd_get_section_by_name (abfd, section->compressed_name);
2292 if (sec != NULL)
2293 section->name = section->compressed_name;
2295 if (sec == NULL)
2296 return 0;
2298 return load_specific_debug_section (debug, sec, file);
2301 void
2302 free_debug_section (enum dwarf_section_display_enum debug)
2304 struct dwarf_section *section = &debug_displays [debug].section;
2306 if (section->start == NULL)
2307 return;
2309 free ((char *) section->start);
2310 section->start = NULL;
2311 section->address = 0;
2312 section->size = 0;
2315 static void
2316 dump_dwarf_section (bfd *abfd, asection *section,
2317 void *arg ATTRIBUTE_UNUSED)
2319 const char *name = bfd_get_section_name (abfd, section);
2320 const char *match;
2321 int i;
2323 if (CONST_STRNEQ (name, ".gnu.linkonce.wi."))
2324 match = ".debug_info";
2325 else
2326 match = name;
2328 for (i = 0; i < max; i++)
2329 if ((strcmp (debug_displays [i].section.uncompressed_name, match) == 0
2330 || strcmp (debug_displays [i].section.compressed_name, match) == 0)
2331 && debug_displays [i].enabled != NULL
2332 && *debug_displays [i].enabled)
2334 struct dwarf_section *sec = &debug_displays [i].section;
2336 if (strcmp (sec->uncompressed_name, match) == 0)
2337 sec->name = sec->uncompressed_name;
2338 else
2339 sec->name = sec->compressed_name;
2340 if (load_specific_debug_section ((enum dwarf_section_display_enum) i,
2341 section, abfd))
2343 debug_displays [i].display (sec, abfd);
2345 if (i != info && i != abbrev)
2346 free_debug_section ((enum dwarf_section_display_enum) i);
2348 break;
2352 /* Dump the dwarf debugging information. */
2354 static void
2355 dump_dwarf (bfd *abfd)
2357 is_relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2359 eh_addr_size = bfd_arch_bits_per_address (abfd) / 8;
2361 if (bfd_big_endian (abfd))
2362 byte_get = byte_get_big_endian;
2363 else if (bfd_little_endian (abfd))
2364 byte_get = byte_get_little_endian;
2365 else
2366 abort ();
2368 switch (bfd_get_arch (abfd))
2370 case bfd_arch_i386:
2371 switch (bfd_get_mach (abfd))
2373 case bfd_mach_x86_64:
2374 case bfd_mach_x86_64_intel_syntax:
2375 init_dwarf_regnames_x86_64 ();
2376 break;
2378 default:
2379 init_dwarf_regnames_i386 ();
2380 break;
2382 break;
2384 default:
2385 break;
2388 bfd_map_over_sections (abfd, dump_dwarf_section, NULL);
2390 free_debug_memory ();
2393 /* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
2394 it. Return NULL on failure. */
2396 static char *
2397 read_section_stabs (bfd *abfd, const char *sect_name, bfd_size_type *size_ptr)
2399 asection *stabsect;
2400 bfd_size_type size;
2401 char *contents;
2403 stabsect = bfd_get_section_by_name (abfd, sect_name);
2404 if (stabsect == NULL)
2406 printf (_("No %s section present\n\n"), sect_name);
2407 return FALSE;
2410 size = bfd_section_size (abfd, stabsect);
2411 contents = (char *) xmalloc (size);
2413 if (! bfd_get_section_contents (abfd, stabsect, contents, 0, size))
2415 non_fatal (_("reading %s section of %s failed: %s"),
2416 sect_name, bfd_get_filename (abfd),
2417 bfd_errmsg (bfd_get_error ()));
2418 exit_status = 1;
2419 free (contents);
2420 return NULL;
2423 *size_ptr = size;
2425 return contents;
2428 /* Stabs entries use a 12 byte format:
2429 4 byte string table index
2430 1 byte stab type
2431 1 byte stab other field
2432 2 byte stab desc field
2433 4 byte stab value
2434 FIXME: This will have to change for a 64 bit object format. */
2436 #define STRDXOFF (0)
2437 #define TYPEOFF (4)
2438 #define OTHEROFF (5)
2439 #define DESCOFF (6)
2440 #define VALOFF (8)
2441 #define STABSIZE (12)
2443 /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
2444 using string table section STRSECT_NAME (in `strtab'). */
2446 static void
2447 print_section_stabs (bfd *abfd,
2448 const char *stabsect_name,
2449 unsigned *string_offset_ptr)
2451 int i;
2452 unsigned file_string_table_offset = 0;
2453 unsigned next_file_string_table_offset = *string_offset_ptr;
2454 bfd_byte *stabp, *stabs_end;
2456 stabp = stabs;
2457 stabs_end = stabp + stab_size;
2459 printf (_("Contents of %s section:\n\n"), stabsect_name);
2460 printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
2462 /* Loop through all symbols and print them.
2464 We start the index at -1 because there is a dummy symbol on
2465 the front of stabs-in-{coff,elf} sections that supplies sizes. */
2466 for (i = -1; stabp < stabs_end; stabp += STABSIZE, i++)
2468 const char *name;
2469 unsigned long strx;
2470 unsigned char type, other;
2471 unsigned short desc;
2472 bfd_vma value;
2474 strx = bfd_h_get_32 (abfd, stabp + STRDXOFF);
2475 type = bfd_h_get_8 (abfd, stabp + TYPEOFF);
2476 other = bfd_h_get_8 (abfd, stabp + OTHEROFF);
2477 desc = bfd_h_get_16 (abfd, stabp + DESCOFF);
2478 value = bfd_h_get_32 (abfd, stabp + VALOFF);
2480 printf ("\n%-6d ", i);
2481 /* Either print the stab name, or, if unnamed, print its number
2482 again (makes consistent formatting for tools like awk). */
2483 name = bfd_get_stab_name (type);
2484 if (name != NULL)
2485 printf ("%-6s", name);
2486 else if (type == N_UNDF)
2487 printf ("HdrSym");
2488 else
2489 printf ("%-6d", type);
2490 printf (" %-6d %-6d ", other, desc);
2491 bfd_printf_vma (abfd, value);
2492 printf (" %-6lu", strx);
2494 /* Symbols with type == 0 (N_UNDF) specify the length of the
2495 string table associated with this file. We use that info
2496 to know how to relocate the *next* file's string table indices. */
2497 if (type == N_UNDF)
2499 file_string_table_offset = next_file_string_table_offset;
2500 next_file_string_table_offset += value;
2502 else
2504 /* Using the (possibly updated) string table offset, print the
2505 string (if any) associated with this symbol. */
2506 if ((strx + file_string_table_offset) < stabstr_size)
2507 printf (" %s", &strtab[strx + file_string_table_offset]);
2508 else
2509 printf (" *");
2512 printf ("\n\n");
2513 *string_offset_ptr = next_file_string_table_offset;
2516 typedef struct
2518 const char * section_name;
2519 const char * string_section_name;
2520 unsigned string_offset;
2522 stab_section_names;
2524 static void
2525 find_stabs_section (bfd *abfd, asection *section, void *names)
2527 int len;
2528 stab_section_names * sought = (stab_section_names *) names;
2530 /* Check for section names for which stabsect_name is a prefix, to
2531 handle .stab.N, etc. */
2532 len = strlen (sought->section_name);
2534 /* If the prefix matches, and the files section name ends with a
2535 nul or a digit, then we match. I.e., we want either an exact
2536 match or a section followed by a number. */
2537 if (strncmp (sought->section_name, section->name, len) == 0
2538 && (section->name[len] == 0
2539 || (section->name[len] == '.' && ISDIGIT (section->name[len + 1]))))
2541 if (strtab == NULL)
2542 strtab = read_section_stabs (abfd, sought->string_section_name,
2543 &stabstr_size);
2545 if (strtab)
2547 stabs = (bfd_byte *) read_section_stabs (abfd, section->name,
2548 &stab_size);
2549 if (stabs)
2550 print_section_stabs (abfd, section->name, &sought->string_offset);
2555 static void
2556 dump_stabs_section (bfd *abfd, char *stabsect_name, char *strsect_name)
2558 stab_section_names s;
2560 s.section_name = stabsect_name;
2561 s.string_section_name = strsect_name;
2562 s.string_offset = 0;
2564 bfd_map_over_sections (abfd, find_stabs_section, & s);
2566 free (strtab);
2567 strtab = NULL;
2570 /* Dump the any sections containing stabs debugging information. */
2572 static void
2573 dump_stabs (bfd *abfd)
2575 dump_stabs_section (abfd, ".stab", ".stabstr");
2576 dump_stabs_section (abfd, ".stab.excl", ".stab.exclstr");
2577 dump_stabs_section (abfd, ".stab.index", ".stab.indexstr");
2579 /* For Darwin. */
2580 dump_stabs_section (abfd, "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr");
2582 dump_stabs_section (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
2585 static void
2586 dump_bfd_header (bfd *abfd)
2588 char *comma = "";
2590 printf (_("architecture: %s, "),
2591 bfd_printable_arch_mach (bfd_get_arch (abfd),
2592 bfd_get_mach (abfd)));
2593 printf (_("flags 0x%08x:\n"), abfd->flags & ~BFD_FLAGS_FOR_BFD_USE_MASK);
2595 #define PF(x, y) if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
2596 PF (HAS_RELOC, "HAS_RELOC");
2597 PF (EXEC_P, "EXEC_P");
2598 PF (HAS_LINENO, "HAS_LINENO");
2599 PF (HAS_DEBUG, "HAS_DEBUG");
2600 PF (HAS_SYMS, "HAS_SYMS");
2601 PF (HAS_LOCALS, "HAS_LOCALS");
2602 PF (DYNAMIC, "DYNAMIC");
2603 PF (WP_TEXT, "WP_TEXT");
2604 PF (D_PAGED, "D_PAGED");
2605 PF (BFD_IS_RELAXABLE, "BFD_IS_RELAXABLE");
2606 PF (HAS_LOAD_PAGE, "HAS_LOAD_PAGE");
2607 printf (_("\nstart address 0x"));
2608 bfd_printf_vma (abfd, abfd->start_address);
2609 printf ("\n");
2613 static void
2614 dump_bfd_private_header (bfd *abfd)
2616 bfd_print_private_bfd_data (abfd, stdout);
2619 static void
2620 dump_target_specific (bfd *abfd)
2622 const struct objdump_private_desc * const *desc;
2623 struct objdump_private_option *opt;
2624 char *e, *b;
2626 /* Find the desc. */
2627 for (desc = objdump_private_vectors; *desc != NULL; desc++)
2628 if ((*desc)->filter (abfd))
2629 break;
2631 if (desc == NULL)
2633 non_fatal (_("option -P/--private not supported by this file"));
2634 return;
2637 /* Clear all options. */
2638 for (opt = (*desc)->options; opt->name; opt++)
2639 opt->selected = FALSE;
2641 /* Decode options. */
2642 b = dump_private_options;
2645 e = strchr (b, ',');
2647 if (e)
2648 *e = 0;
2650 for (opt = (*desc)->options; opt->name; opt++)
2651 if (strcmp (opt->name, b) == 0)
2653 opt->selected = TRUE;
2654 break;
2656 if (opt->name == NULL)
2657 non_fatal (_("target specific dump '%s' not supported"), b);
2659 if (e)
2661 *e = ',';
2662 b = e + 1;
2665 while (e != NULL);
2667 /* Dump. */
2668 (*desc)->dump (abfd);
2671 /* Display a section in hexadecimal format with associated characters.
2672 Each line prefixed by the zero padded address. */
2674 static void
2675 dump_section (bfd *abfd, asection *section, void *dummy ATTRIBUTE_UNUSED)
2677 bfd_byte *data = 0;
2678 bfd_size_type datasize;
2679 bfd_size_type addr_offset;
2680 bfd_size_type start_offset;
2681 bfd_size_type stop_offset;
2682 unsigned int opb = bfd_octets_per_byte (abfd);
2683 /* Bytes per line. */
2684 const int onaline = 16;
2685 char buf[64];
2686 int count;
2687 int width;
2689 if ((section->flags & SEC_HAS_CONTENTS) == 0)
2690 return;
2692 if (! process_section_p (section))
2693 return;
2695 if ((datasize = bfd_section_size (abfd, section)) == 0)
2696 return;
2698 /* Compute the address range to display. */
2699 if (start_address == (bfd_vma) -1
2700 || start_address < section->vma)
2701 start_offset = 0;
2702 else
2703 start_offset = start_address - section->vma;
2705 if (stop_address == (bfd_vma) -1)
2706 stop_offset = datasize / opb;
2707 else
2709 if (stop_address < section->vma)
2710 stop_offset = 0;
2711 else
2712 stop_offset = stop_address - section->vma;
2714 if (stop_offset > datasize / opb)
2715 stop_offset = datasize / opb;
2718 if (start_offset >= stop_offset)
2719 return;
2721 printf (_("Contents of section %s:"), section->name);
2722 if (display_file_offsets)
2723 printf (_(" (Starting at file offset: 0x%lx)"),
2724 (unsigned long) (section->filepos + start_offset));
2725 printf ("\n");
2727 if (!bfd_get_full_section_contents (abfd, section, &data))
2729 non_fatal (_("Reading section failed"));
2730 return;
2733 width = 4;
2735 bfd_sprintf_vma (abfd, buf, start_offset + section->vma);
2736 if (strlen (buf) >= sizeof (buf))
2737 abort ();
2739 count = 0;
2740 while (buf[count] == '0' && buf[count+1] != '\0')
2741 count++;
2742 count = strlen (buf) - count;
2743 if (count > width)
2744 width = count;
2746 bfd_sprintf_vma (abfd, buf, stop_offset + section->vma - 1);
2747 if (strlen (buf) >= sizeof (buf))
2748 abort ();
2750 count = 0;
2751 while (buf[count] == '0' && buf[count+1] != '\0')
2752 count++;
2753 count = strlen (buf) - count;
2754 if (count > width)
2755 width = count;
2757 for (addr_offset = start_offset;
2758 addr_offset < stop_offset; addr_offset += onaline / opb)
2760 bfd_size_type j;
2762 bfd_sprintf_vma (abfd, buf, (addr_offset + section->vma));
2763 count = strlen (buf);
2764 if ((size_t) count >= sizeof (buf))
2765 abort ();
2767 putchar (' ');
2768 while (count < width)
2770 putchar ('0');
2771 count++;
2773 fputs (buf + count - width, stdout);
2774 putchar (' ');
2776 for (j = addr_offset * opb;
2777 j < addr_offset * opb + onaline; j++)
2779 if (j < stop_offset * opb)
2780 printf ("%02x", (unsigned) (data[j]));
2781 else
2782 printf (" ");
2783 if ((j & 3) == 3)
2784 printf (" ");
2787 printf (" ");
2788 for (j = addr_offset * opb;
2789 j < addr_offset * opb + onaline; j++)
2791 if (j >= stop_offset * opb)
2792 printf (" ");
2793 else
2794 printf ("%c", ISPRINT (data[j]) ? data[j] : '.');
2796 putchar ('\n');
2798 free (data);
2801 /* Actually display the various requested regions. */
2803 static void
2804 dump_data (bfd *abfd)
2806 bfd_map_over_sections (abfd, dump_section, NULL);
2809 /* Should perhaps share code and display with nm? */
2811 static void
2812 dump_symbols (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean dynamic)
2814 asymbol **current;
2815 long max_count;
2816 long count;
2818 if (dynamic)
2820 current = dynsyms;
2821 max_count = dynsymcount;
2822 printf ("DYNAMIC SYMBOL TABLE:\n");
2824 else
2826 current = syms;
2827 max_count = symcount;
2828 printf ("SYMBOL TABLE:\n");
2831 if (max_count == 0)
2832 printf (_("no symbols\n"));
2834 for (count = 0; count < max_count; count++)
2836 bfd *cur_bfd;
2838 if (*current == NULL)
2839 printf (_("no information for symbol number %ld\n"), count);
2841 else if ((cur_bfd = bfd_asymbol_bfd (*current)) == NULL)
2842 printf (_("could not determine the type of symbol number %ld\n"),
2843 count);
2845 else if (process_section_p ((* current)->section)
2846 && (dump_special_syms
2847 || !bfd_is_target_special_symbol (cur_bfd, *current)))
2849 const char *name = (*current)->name;
2851 if (do_demangle && name != NULL && *name != '\0')
2853 char *alloc;
2855 /* If we want to demangle the name, we demangle it
2856 here, and temporarily clobber it while calling
2857 bfd_print_symbol. FIXME: This is a gross hack. */
2858 alloc = bfd_demangle (cur_bfd, name, DMGL_ANSI | DMGL_PARAMS);
2859 if (alloc != NULL)
2860 (*current)->name = alloc;
2861 bfd_print_symbol (cur_bfd, stdout, *current,
2862 bfd_print_symbol_all);
2863 if (alloc != NULL)
2865 (*current)->name = name;
2866 free (alloc);
2869 else
2870 bfd_print_symbol (cur_bfd, stdout, *current,
2871 bfd_print_symbol_all);
2872 printf ("\n");
2875 current++;
2877 printf ("\n\n");
2880 static void
2881 dump_reloc_set (bfd *abfd, asection *sec, arelent **relpp, long relcount)
2883 arelent **p;
2884 char *last_filename, *last_functionname;
2885 unsigned int last_line;
2887 /* Get column headers lined up reasonably. */
2889 static int width;
2891 if (width == 0)
2893 char buf[30];
2895 bfd_sprintf_vma (abfd, buf, (bfd_vma) -1);
2896 width = strlen (buf) - 7;
2898 printf ("OFFSET %*s TYPE %*s VALUE \n", width, "", 12, "");
2901 last_filename = NULL;
2902 last_functionname = NULL;
2903 last_line = 0;
2905 for (p = relpp; relcount && *p != NULL; p++, relcount--)
2907 arelent *q = *p;
2908 const char *filename, *functionname;
2909 unsigned int linenumber;
2910 const char *sym_name;
2911 const char *section_name;
2912 bfd_vma addend2 = 0;
2914 if (start_address != (bfd_vma) -1
2915 && q->address < start_address)
2916 continue;
2917 if (stop_address != (bfd_vma) -1
2918 && q->address > stop_address)
2919 continue;
2921 if (with_line_numbers
2922 && sec != NULL
2923 && bfd_find_nearest_line (abfd, sec, syms, q->address,
2924 &filename, &functionname, &linenumber))
2926 if (functionname != NULL
2927 && (last_functionname == NULL
2928 || strcmp (functionname, last_functionname) != 0))
2930 printf ("%s():\n", functionname);
2931 if (last_functionname != NULL)
2932 free (last_functionname);
2933 last_functionname = xstrdup (functionname);
2936 if (linenumber > 0
2937 && (linenumber != last_line
2938 || (filename != NULL
2939 && last_filename != NULL
2940 && filename_cmp (filename, last_filename) != 0)))
2942 printf ("%s:%u\n", filename == NULL ? "???" : filename, linenumber);
2943 last_line = linenumber;
2944 if (last_filename != NULL)
2945 free (last_filename);
2946 if (filename == NULL)
2947 last_filename = NULL;
2948 else
2949 last_filename = xstrdup (filename);
2953 if (q->sym_ptr_ptr && *q->sym_ptr_ptr)
2955 sym_name = (*(q->sym_ptr_ptr))->name;
2956 section_name = (*(q->sym_ptr_ptr))->section->name;
2958 else
2960 sym_name = NULL;
2961 section_name = NULL;
2964 bfd_printf_vma (abfd, q->address);
2965 if (q->howto == NULL)
2966 printf (" *unknown* ");
2967 else if (q->howto->name)
2969 const char *name = q->howto->name;
2971 /* R_SPARC_OLO10 relocations contain two addends.
2972 But because 'arelent' lacks enough storage to
2973 store them both, the 64-bit ELF Sparc backend
2974 records this as two relocations. One R_SPARC_LO10
2975 and one R_SPARC_13, both pointing to the same
2976 address. This is merely so that we have some
2977 place to store both addend fields.
2979 Undo this transformation, otherwise the output
2980 will be confusing. */
2981 if (abfd->xvec->flavour == bfd_target_elf_flavour
2982 && elf_tdata(abfd)->elf_header->e_machine == EM_SPARCV9
2983 && relcount > 1
2984 && !strcmp (q->howto->name, "R_SPARC_LO10"))
2986 arelent *q2 = *(p + 1);
2987 if (q2 != NULL
2988 && q2->howto
2989 && q->address == q2->address
2990 && !strcmp (q2->howto->name, "R_SPARC_13"))
2992 name = "R_SPARC_OLO10";
2993 addend2 = q2->addend;
2994 p++;
2997 printf (" %-16s ", name);
2999 else
3000 printf (" %-16d ", q->howto->type);
3002 if (sym_name)
3004 objdump_print_symname (abfd, NULL, *q->sym_ptr_ptr);
3006 else
3008 if (section_name == NULL)
3009 section_name = "*unknown*";
3010 printf ("[%s]", section_name);
3013 if (q->addend)
3015 printf ("+0x");
3016 bfd_printf_vma (abfd, q->addend);
3018 if (addend2)
3020 printf ("+0x");
3021 bfd_printf_vma (abfd, addend2);
3024 printf ("\n");
3027 if (last_filename != NULL)
3028 free (last_filename);
3029 if (last_functionname != NULL)
3030 free (last_functionname);
3033 static void
3034 dump_relocs_in_section (bfd *abfd,
3035 asection *section,
3036 void *dummy ATTRIBUTE_UNUSED)
3038 arelent **relpp;
3039 long relcount;
3040 long relsize;
3042 if ( bfd_is_abs_section (section)
3043 || bfd_is_und_section (section)
3044 || bfd_is_com_section (section)
3045 || (! process_section_p (section))
3046 || ((section->flags & SEC_RELOC) == 0))
3047 return;
3049 relsize = bfd_get_reloc_upper_bound (abfd, section);
3050 if (relsize < 0)
3051 bfd_fatal (bfd_get_filename (abfd));
3053 printf ("RELOCATION RECORDS FOR [%s]:", section->name);
3055 if (relsize == 0)
3057 printf (" (none)\n\n");
3058 return;
3061 relpp = (arelent **) xmalloc (relsize);
3062 relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
3064 if (relcount < 0)
3065 bfd_fatal (bfd_get_filename (abfd));
3066 else if (relcount == 0)
3067 printf (" (none)\n\n");
3068 else
3070 printf ("\n");
3071 dump_reloc_set (abfd, section, relpp, relcount);
3072 printf ("\n\n");
3074 free (relpp);
3077 static void
3078 dump_relocs (bfd *abfd)
3080 bfd_map_over_sections (abfd, dump_relocs_in_section, NULL);
3083 static void
3084 dump_dynamic_relocs (bfd *abfd)
3086 long relsize;
3087 arelent **relpp;
3088 long relcount;
3090 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
3091 if (relsize < 0)
3092 bfd_fatal (bfd_get_filename (abfd));
3094 printf ("DYNAMIC RELOCATION RECORDS");
3096 if (relsize == 0)
3097 printf (" (none)\n\n");
3098 else
3100 relpp = (arelent **) xmalloc (relsize);
3101 relcount = bfd_canonicalize_dynamic_reloc (abfd, relpp, dynsyms);
3103 if (relcount < 0)
3104 bfd_fatal (bfd_get_filename (abfd));
3105 else if (relcount == 0)
3106 printf (" (none)\n\n");
3107 else
3109 printf ("\n");
3110 dump_reloc_set (abfd, NULL, relpp, relcount);
3111 printf ("\n\n");
3113 free (relpp);
3117 /* Creates a table of paths, to search for source files. */
3119 static void
3120 add_include_path (const char *path)
3122 if (path[0] == 0)
3123 return;
3124 include_path_count++;
3125 include_paths = (const char **)
3126 xrealloc (include_paths, include_path_count * sizeof (*include_paths));
3127 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3128 if (path[1] == ':' && path[2] == 0)
3129 path = concat (path, ".", (const char *) 0);
3130 #endif
3131 include_paths[include_path_count - 1] = path;
3134 static void
3135 adjust_addresses (bfd *abfd ATTRIBUTE_UNUSED,
3136 asection *section,
3137 void *arg)
3139 if ((section->flags & SEC_DEBUGGING) == 0)
3141 bfd_boolean *has_reloc_p = (bfd_boolean *) arg;
3142 section->vma += adjust_section_vma;
3143 if (*has_reloc_p)
3144 section->lma += adjust_section_vma;
3148 /* Dump selected contents of ABFD. */
3150 static void
3151 dump_bfd (bfd *abfd)
3153 /* If we are adjusting section VMA's, change them all now. Changing
3154 the BFD information is a hack. However, we must do it, or
3155 bfd_find_nearest_line will not do the right thing. */
3156 if (adjust_section_vma != 0)
3158 bfd_boolean has_reloc = (abfd->flags & HAS_RELOC);
3159 bfd_map_over_sections (abfd, adjust_addresses, &has_reloc);
3162 if (! dump_debugging_tags && ! suppress_bfd_header)
3163 printf (_("\n%s: file format %s\n"), bfd_get_filename (abfd),
3164 abfd->xvec->name);
3165 if (dump_ar_hdrs)
3166 print_arelt_descr (stdout, abfd, TRUE);
3167 if (dump_file_header)
3168 dump_bfd_header (abfd);
3169 if (dump_private_headers)
3170 dump_bfd_private_header (abfd);
3171 if (dump_private_options != NULL)
3172 dump_target_specific (abfd);
3173 if (! dump_debugging_tags && ! suppress_bfd_header)
3174 putchar ('\n');
3175 if (dump_section_headers)
3176 dump_headers (abfd);
3178 if (dump_symtab
3179 || dump_reloc_info
3180 || disassemble
3181 || dump_debugging
3182 || dump_dwarf_section_info)
3183 syms = slurp_symtab (abfd);
3184 if (dump_dynamic_symtab || dump_dynamic_reloc_info
3185 || (disassemble && bfd_get_dynamic_symtab_upper_bound (abfd) > 0))
3186 dynsyms = slurp_dynamic_symtab (abfd);
3187 if (disassemble)
3189 synthcount = bfd_get_synthetic_symtab (abfd, symcount, syms,
3190 dynsymcount, dynsyms, &synthsyms);
3191 if (synthcount < 0)
3192 synthcount = 0;
3195 if (dump_symtab)
3196 dump_symbols (abfd, FALSE);
3197 if (dump_dynamic_symtab)
3198 dump_symbols (abfd, TRUE);
3199 if (dump_dwarf_section_info)
3200 dump_dwarf (abfd);
3201 if (dump_stab_section_info)
3202 dump_stabs (abfd);
3203 if (dump_reloc_info && ! disassemble)
3204 dump_relocs (abfd);
3205 if (dump_dynamic_reloc_info && ! disassemble)
3206 dump_dynamic_relocs (abfd);
3207 if (dump_section_contents)
3208 dump_data (abfd);
3209 if (disassemble)
3210 disassemble_data (abfd);
3212 if (dump_debugging)
3214 void *dhandle;
3216 dhandle = read_debugging_info (abfd, syms, symcount, TRUE);
3217 if (dhandle != NULL)
3219 if (!print_debugging_info (stdout, dhandle, abfd, syms,
3220 bfd_demangle,
3221 dump_debugging_tags ? TRUE : FALSE))
3223 non_fatal (_("%s: printing debugging information failed"),
3224 bfd_get_filename (abfd));
3225 exit_status = 1;
3228 /* PR 6483: If there was no STABS or IEEE debug
3229 info in the file, try DWARF instead. */
3230 else if (! dump_dwarf_section_info)
3232 dump_dwarf (abfd);
3236 if (syms)
3238 free (syms);
3239 syms = NULL;
3242 if (dynsyms)
3244 free (dynsyms);
3245 dynsyms = NULL;
3248 if (synthsyms)
3250 free (synthsyms);
3251 synthsyms = NULL;
3254 symcount = 0;
3255 dynsymcount = 0;
3256 synthcount = 0;
3259 static void
3260 display_bfd (bfd *abfd)
3262 char **matching;
3264 if (bfd_check_format_matches (abfd, bfd_object, &matching))
3266 dump_bfd (abfd);
3267 return;
3270 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3272 nonfatal (bfd_get_filename (abfd));
3273 list_matching_formats (matching);
3274 free (matching);
3275 return;
3278 if (bfd_get_error () != bfd_error_file_not_recognized)
3280 nonfatal (bfd_get_filename (abfd));
3281 return;
3284 if (bfd_check_format_matches (abfd, bfd_core, &matching))
3286 dump_bfd (abfd);
3287 return;
3290 nonfatal (bfd_get_filename (abfd));
3292 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3294 list_matching_formats (matching);
3295 free (matching);
3299 static void
3300 display_file (char *filename, char *target)
3302 bfd *file;
3303 bfd *arfile = NULL;
3305 if (get_file_size (filename) < 1)
3307 exit_status = 1;
3308 return;
3311 file = bfd_openr (filename, target);
3312 if (file == NULL)
3314 nonfatal (filename);
3315 return;
3318 /* Decompress sections unless dumping the section contents. */
3319 if (!dump_section_contents)
3320 file->flags |= BFD_DECOMPRESS;
3322 /* If the file is an archive, process all of its elements. */
3323 if (bfd_check_format (file, bfd_archive))
3325 bfd *last_arfile = NULL;
3327 printf (_("In archive %s:\n"), bfd_get_filename (file));
3328 for (;;)
3330 bfd_set_error (bfd_error_no_error);
3332 arfile = bfd_openr_next_archived_file (file, arfile);
3333 if (arfile == NULL)
3335 if (bfd_get_error () != bfd_error_no_more_archived_files)
3336 nonfatal (bfd_get_filename (file));
3337 break;
3340 display_bfd (arfile);
3342 if (last_arfile != NULL)
3343 bfd_close (last_arfile);
3344 last_arfile = arfile;
3347 if (last_arfile != NULL)
3348 bfd_close (last_arfile);
3350 else
3351 display_bfd (file);
3353 bfd_close (file);
3357 main (int argc, char **argv)
3359 int c;
3360 char *target = default_target;
3361 bfd_boolean seenflag = FALSE;
3363 #if defined (HAVE_SETLOCALE)
3364 #if defined (HAVE_LC_MESSAGES)
3365 setlocale (LC_MESSAGES, "");
3366 #endif
3367 setlocale (LC_CTYPE, "");
3368 #endif
3370 bindtextdomain (PACKAGE, LOCALEDIR);
3371 textdomain (PACKAGE);
3373 program_name = *argv;
3374 xmalloc_set_program_name (program_name);
3376 START_PROGRESS (program_name, 0);
3378 expandargv (&argc, &argv);
3380 bfd_init ();
3381 set_default_bfd_target ();
3383 while ((c = getopt_long (argc, argv,
3384 "pP:ib:m:M:VvCdDlfFaHhrRtTxsSI:j:wE:zgeGW::",
3385 long_options, (int *) 0))
3386 != EOF)
3388 switch (c)
3390 case 0:
3391 break; /* We've been given a long option. */
3392 case 'm':
3393 machine = optarg;
3394 break;
3395 case 'M':
3396 if (disassembler_options)
3397 /* Ignore potential memory leak for now. */
3398 disassembler_options = concat (disassembler_options, ",",
3399 optarg, (const char *) NULL);
3400 else
3401 disassembler_options = optarg;
3402 break;
3403 case 'j':
3404 add_only (optarg);
3405 break;
3406 case 'F':
3407 display_file_offsets = TRUE;
3408 break;
3409 case 'l':
3410 with_line_numbers = TRUE;
3411 break;
3412 case 'b':
3413 target = optarg;
3414 break;
3415 case 'C':
3416 do_demangle = TRUE;
3417 if (optarg != NULL)
3419 enum demangling_styles style;
3421 style = cplus_demangle_name_to_style (optarg);
3422 if (style == unknown_demangling)
3423 fatal (_("unknown demangling style `%s'"),
3424 optarg);
3426 cplus_demangle_set_style (style);
3428 break;
3429 case 'w':
3430 wide_output = TRUE;
3431 break;
3432 case OPTION_ADJUST_VMA:
3433 adjust_section_vma = parse_vma (optarg, "--adjust-vma");
3434 break;
3435 case OPTION_START_ADDRESS:
3436 start_address = parse_vma (optarg, "--start-address");
3437 if ((stop_address != (bfd_vma) -1) && stop_address <= start_address)
3438 fatal (_("error: the start address should be before the end address"));
3439 break;
3440 case OPTION_STOP_ADDRESS:
3441 stop_address = parse_vma (optarg, "--stop-address");
3442 if ((start_address != (bfd_vma) -1) && stop_address <= start_address)
3443 fatal (_("error: the stop address should be after the start address"));
3444 break;
3445 case OPTION_PREFIX:
3446 prefix = optarg;
3447 prefix_length = strlen (prefix);
3448 /* Remove an unnecessary trailing '/' */
3449 while (IS_DIR_SEPARATOR (prefix[prefix_length - 1]))
3450 prefix_length--;
3451 break;
3452 case OPTION_PREFIX_STRIP:
3453 prefix_strip = atoi (optarg);
3454 if (prefix_strip < 0)
3455 fatal (_("error: prefix strip must be non-negative"));
3456 break;
3457 case OPTION_INSN_WIDTH:
3458 insn_width = strtoul (optarg, NULL, 0);
3459 if (insn_width <= 0)
3460 fatal (_("error: instruction width must be positive"));
3461 break;
3462 case 'E':
3463 if (strcmp (optarg, "B") == 0)
3464 endian = BFD_ENDIAN_BIG;
3465 else if (strcmp (optarg, "L") == 0)
3466 endian = BFD_ENDIAN_LITTLE;
3467 else
3469 nonfatal (_("unrecognized -E option"));
3470 usage (stderr, 1);
3472 break;
3473 case OPTION_ENDIAN:
3474 if (strncmp (optarg, "big", strlen (optarg)) == 0)
3475 endian = BFD_ENDIAN_BIG;
3476 else if (strncmp (optarg, "little", strlen (optarg)) == 0)
3477 endian = BFD_ENDIAN_LITTLE;
3478 else
3480 non_fatal (_("unrecognized --endian type `%s'"), optarg);
3481 exit_status = 1;
3482 usage (stderr, 1);
3484 break;
3486 case 'f':
3487 dump_file_header = TRUE;
3488 seenflag = TRUE;
3489 break;
3490 case 'i':
3491 formats_info = TRUE;
3492 seenflag = TRUE;
3493 break;
3494 case 'I':
3495 add_include_path (optarg);
3496 break;
3497 case 'p':
3498 dump_private_headers = TRUE;
3499 seenflag = TRUE;
3500 break;
3501 case 'P':
3502 dump_private_options = optarg;
3503 seenflag = TRUE;
3504 break;
3505 case 'x':
3506 dump_private_headers = TRUE;
3507 dump_symtab = TRUE;
3508 dump_reloc_info = TRUE;
3509 dump_file_header = TRUE;
3510 dump_ar_hdrs = TRUE;
3511 dump_section_headers = TRUE;
3512 seenflag = TRUE;
3513 break;
3514 case 't':
3515 dump_symtab = TRUE;
3516 seenflag = TRUE;
3517 break;
3518 case 'T':
3519 dump_dynamic_symtab = TRUE;
3520 seenflag = TRUE;
3521 break;
3522 case 'd':
3523 disassemble = TRUE;
3524 seenflag = TRUE;
3525 break;
3526 case 'z':
3527 disassemble_zeroes = TRUE;
3528 break;
3529 case 'D':
3530 disassemble = TRUE;
3531 disassemble_all = TRUE;
3532 seenflag = TRUE;
3533 break;
3534 case 'S':
3535 disassemble = TRUE;
3536 with_source_code = TRUE;
3537 seenflag = TRUE;
3538 break;
3539 case 'g':
3540 dump_debugging = 1;
3541 seenflag = TRUE;
3542 break;
3543 case 'e':
3544 dump_debugging = 1;
3545 dump_debugging_tags = 1;
3546 do_demangle = TRUE;
3547 seenflag = TRUE;
3548 break;
3549 case 'W':
3550 dump_dwarf_section_info = TRUE;
3551 seenflag = TRUE;
3552 if (optarg)
3553 dwarf_select_sections_by_letters (optarg);
3554 else
3555 dwarf_select_sections_all ();
3556 break;
3557 case OPTION_DWARF:
3558 dump_dwarf_section_info = TRUE;
3559 seenflag = TRUE;
3560 if (optarg)
3561 dwarf_select_sections_by_names (optarg);
3562 else
3563 dwarf_select_sections_all ();
3564 break;
3565 case OPTION_DWARF_DEPTH:
3567 char *cp;
3568 dwarf_cutoff_level = strtoul (optarg, & cp, 0);
3570 break;
3571 case OPTION_DWARF_START:
3573 char *cp;
3574 dwarf_start_die = strtoul (optarg, & cp, 0);
3575 suppress_bfd_header = 1;
3577 break;
3578 case 'G':
3579 dump_stab_section_info = TRUE;
3580 seenflag = TRUE;
3581 break;
3582 case 's':
3583 dump_section_contents = TRUE;
3584 seenflag = TRUE;
3585 break;
3586 case 'r':
3587 dump_reloc_info = TRUE;
3588 seenflag = TRUE;
3589 break;
3590 case 'R':
3591 dump_dynamic_reloc_info = TRUE;
3592 seenflag = TRUE;
3593 break;
3594 case 'a':
3595 dump_ar_hdrs = TRUE;
3596 seenflag = TRUE;
3597 break;
3598 case 'h':
3599 dump_section_headers = TRUE;
3600 seenflag = TRUE;
3601 break;
3602 case 'H':
3603 usage (stdout, 0);
3604 seenflag = TRUE;
3605 case 'v':
3606 case 'V':
3607 show_version = TRUE;
3608 seenflag = TRUE;
3609 break;
3611 default:
3612 usage (stderr, 1);
3616 if (show_version)
3617 print_version ("objdump");
3619 if (!seenflag)
3620 usage (stderr, 2);
3622 if (formats_info)
3623 exit_status = display_info ();
3624 else
3626 if (optind == argc)
3627 display_file ("a.out", target);
3628 else
3629 for (; optind < argc;)
3630 display_file (argv[optind++], target);
3633 free_only_list ();
3635 END_PROGRESS (program_name);
3637 return exit_status;