1 /* objdump.c -- dump information about an object file.
2 Copyright (C) 1990-2014 Free Software Foundation, Inc.
4 This file is part of GNU Binutils.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
24 Objdump displays information about one or more object files, either on
25 their own, or inside libraries. It is commonly used as a disassembler,
26 but it can also display information about file headers, symbol tables,
27 relocations, debugging directives and more.
29 The flow of execution is as follows:
31 1. Command line arguments are checked for control switches and the
32 information to be displayed is selected.
34 2. Any remaining arguments are assumed to be object files, and they are
35 processed in order by display_bfd(). If the file is an archive each
36 of its elements is processed in turn.
38 3. The file's target architecture and binary file format are determined
39 by bfd_check_format(). If they are recognised, then dump_bfd() is
42 4. dump_bfd() in turn calls separate functions to display the requested
43 item(s) of information(s). For example disassemble_data() is called if
44 a disassembly has been requested.
46 When disassembling the code loops through blocks of instructions bounded
47 by symbols, calling disassemble_bytes() on each block. The actual
48 disassembling is done by the libopcodes library, via a function pointer
49 supplied by the disassembler() function. */
59 #include "safe-ctype.h"
61 #include "libiberty.h"
63 #include "filenames.h"
72 /* Internal headers for the ELF .stab-dump code - sorry. */
73 #define BYTES_IN_WORD 32
74 #include "aout/aout64.h"
77 static int exit_status = 0;
79 static char *default_target = NULL; /* Default at runtime. */
81 /* The following variables are set based on arguments passed on the
83 static int show_version = 0; /* Show the version number. */
84 static int dump_section_contents; /* -s */
85 static int dump_section_headers; /* -h */
86 static bfd_boolean dump_file_header; /* -f */
87 static int dump_symtab; /* -t */
88 static int dump_dynamic_symtab; /* -T */
89 static int dump_reloc_info; /* -r */
90 static int dump_dynamic_reloc_info; /* -R */
91 static int dump_ar_hdrs; /* -a */
92 static int dump_private_headers; /* -p */
93 static char *dump_private_options; /* -P */
94 static int prefix_addresses; /* --prefix-addresses */
95 static int with_line_numbers; /* -l */
96 static bfd_boolean with_source_code; /* -S */
97 static int show_raw_insn; /* --show-raw-insn */
98 static int dump_dwarf_section_info; /* --dwarf */
99 static int dump_stab_section_info; /* --stabs */
100 static int do_demangle; /* -C, --demangle */
101 static bfd_boolean disassemble; /* -d */
102 static bfd_boolean disassemble_all; /* -D */
103 static int disassemble_zeroes; /* --disassemble-zeroes */
104 static bfd_boolean formats_info; /* -i */
105 static int wide_output; /* -w */
106 static int insn_width; /* --insn-width */
107 static bfd_vma start_address = (bfd_vma) -1; /* --start-address */
108 static bfd_vma stop_address = (bfd_vma) -1; /* --stop-address */
109 static int dump_debugging; /* --debugging */
110 static int dump_debugging_tags; /* --debugging-tags */
111 static int suppress_bfd_header;
112 static int dump_special_syms = 0; /* --special-syms */
113 static bfd_vma adjust_section_vma = 0; /* --adjust-vma */
114 static int file_start_context = 0; /* --file-start-context */
115 static bfd_boolean display_file_offsets;/* -F */
116 static const char *prefix; /* --prefix */
117 static int prefix_strip; /* --prefix-strip */
118 static size_t prefix_length;
120 /* A structure to record the sections mentioned in -j switches. */
123 const char * name; /* The name of the section. */
124 bfd_boolean seen; /* A flag to indicate that the section has been found in one or more input files. */
125 struct only * next; /* Pointer to the next structure in the list. */
127 /* Pointer to an array of 'only' structures.
128 This pointer is NULL if the -j switch has not been used. */
129 static struct only * only_list = NULL;
131 /* Variables for handling include file path table. */
132 static const char **include_paths;
133 static int include_path_count;
135 /* Extra info to pass to the section disassembler and address printing
137 struct objdump_disasm_info
141 bfd_boolean require_sec;
142 arelent ** dynrelbuf;
144 disassembler_ftype disassemble_fn;
148 /* Architecture to disassemble for, or default if NULL. */
149 static char *machine = NULL;
151 /* Target specific options to the disassembler. */
152 static char *disassembler_options = NULL;
154 /* Endianness to disassemble for, or default if BFD_ENDIAN_UNKNOWN. */
155 static enum bfd_endian endian = BFD_ENDIAN_UNKNOWN;
157 /* The symbol table. */
158 static asymbol **syms;
160 /* Number of symbols in `syms'. */
161 static long symcount = 0;
163 /* The sorted symbol table. */
164 static asymbol **sorted_syms;
166 /* Number of symbols in `sorted_syms'. */
167 static long sorted_symcount = 0;
169 /* The dynamic symbol table. */
170 static asymbol **dynsyms;
172 /* The synthetic symbol table. */
173 static asymbol *synthsyms;
174 static long synthcount = 0;
176 /* Number of symbols in `dynsyms'. */
177 static long dynsymcount = 0;
179 static bfd_byte *stabs;
180 static bfd_size_type stab_size;
183 static bfd_size_type stabstr_size;
185 static bfd_boolean is_relocatable = FALSE;
187 /* Handlers for -P/--private. */
188 static const struct objdump_private_desc * const objdump_private_vectors[] =
190 OBJDUMP_PRIVATE_VECTORS
194 static void usage (FILE *, int) ATTRIBUTE_NORETURN;
196 usage (FILE *stream, int status)
198 fprintf (stream, _("Usage: %s <option(s)> <file(s)>\n"), program_name);
199 fprintf (stream, _(" Display information from object <file(s)>.\n"));
200 fprintf (stream, _(" At least one of the following switches must be given:\n"));
201 fprintf (stream, _("\
202 -a, --archive-headers Display archive header information\n\
203 -f, --file-headers Display the contents of the overall file header\n\
204 -p, --private-headers Display object format specific file header contents\n\
205 -P, --private=OPT,OPT... Display object format specific contents\n\
206 -h, --[section-]headers Display the contents of the section headers\n\
207 -x, --all-headers Display the contents of all headers\n\
208 -d, --disassemble Display assembler contents of executable sections\n\
209 -D, --disassemble-all Display assembler contents of all sections\n\
210 -S, --source Intermix source code with disassembly\n\
211 -s, --full-contents Display the full contents of all sections requested\n\
212 -g, --debugging Display debug information in object file\n\
213 -e, --debugging-tags Display debug information using ctags style\n\
214 -G, --stabs Display (in raw form) any STABS info in the file\n\
215 -W[lLiaprmfFsoRt] or\n\
216 --dwarf[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,\n\
217 =frames-interp,=str,=loc,=Ranges,=pubtypes,\n\
218 =gdb_index,=trace_info,=trace_abbrev,=trace_aranges,\n\
220 Display DWARF info in the file\n\
221 -t, --syms Display the contents of the symbol table(s)\n\
222 -T, --dynamic-syms Display the contents of the dynamic symbol table\n\
223 -r, --reloc Display the relocation entries in the file\n\
224 -R, --dynamic-reloc Display the dynamic relocation entries in the file\n\
225 @<file> Read options from <file>\n\
226 -v, --version Display this program's version number\n\
227 -i, --info List object formats and architectures supported\n\
228 -H, --help Display this information\n\
232 const struct objdump_private_desc * const *desc;
234 fprintf (stream, _("\n The following switches are optional:\n"));
235 fprintf (stream, _("\
236 -b, --target=BFDNAME Specify the target object format as BFDNAME\n\
237 -m, --architecture=MACHINE Specify the target architecture as MACHINE\n\
238 -j, --section=NAME Only display information for section NAME\n\
239 -M, --disassembler-options=OPT Pass text OPT on to the disassembler\n\
240 -EB --endian=big Assume big endian format when disassembling\n\
241 -EL --endian=little Assume little endian format when disassembling\n\
242 --file-start-context Include context from start of file (with -S)\n\
243 -I, --include=DIR Add DIR to search list for source files\n\
244 -l, --line-numbers Include line numbers and filenames in output\n\
245 -F, --file-offsets Include file offsets when displaying information\n\
246 -C, --demangle[=STYLE] Decode mangled/processed symbol names\n\
247 The STYLE, if specified, can be `auto', `gnu',\n\
248 `lucid', `arm', `hp', `edg', `gnu-v3', `java'\n\
250 -w, --wide Format output for more than 80 columns\n\
251 -z, --disassemble-zeroes Do not skip blocks of zeroes when disassembling\n\
252 --start-address=ADDR Only process data whose address is >= ADDR\n\
253 --stop-address=ADDR Only process data whose address is <= ADDR\n\
254 --prefix-addresses Print complete address alongside disassembly\n\
255 --[no-]show-raw-insn Display hex alongside symbolic disassembly\n\
256 --insn-width=WIDTH Display WIDTH bytes on a single line for -d\n\
257 --adjust-vma=OFFSET Add OFFSET to all displayed section addresses\n\
258 --special-syms Include special symbols in symbol dumps\n\
259 --prefix=PREFIX Add PREFIX to absolute paths for -S\n\
260 --prefix-strip=LEVEL Strip initial directory names for -S\n"));
261 fprintf (stream, _("\
262 --dwarf-depth=N Do not display DIEs at depth N or greater\n\
263 --dwarf-start=N Display DIEs starting with N, at the same depth\n\
265 --dwarf-check Make additional dwarf internal consistency checks.\
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)
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);
285 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
289 OPTION_START_ADDRESS,
301 static struct option long_options[]=
303 {"adjust-vma", required_argument, NULL, OPTION_ADJUST_VMA},
304 {"all-headers", no_argument, NULL, 'x'},
305 {"private-headers", no_argument, NULL, 'p'},
306 {"private", required_argument, NULL, 'P'},
307 {"architecture", required_argument, NULL, 'm'},
308 {"archive-headers", no_argument, NULL, 'a'},
309 {"debugging", no_argument, NULL, 'g'},
310 {"debugging-tags", no_argument, NULL, 'e'},
311 {"demangle", optional_argument, NULL, 'C'},
312 {"disassemble", no_argument, NULL, 'd'},
313 {"disassemble-all", no_argument, NULL, 'D'},
314 {"disassembler-options", required_argument, NULL, 'M'},
315 {"disassemble-zeroes", no_argument, NULL, 'z'},
316 {"dynamic-reloc", no_argument, NULL, 'R'},
317 {"dynamic-syms", no_argument, NULL, 'T'},
318 {"endian", required_argument, NULL, OPTION_ENDIAN},
319 {"file-headers", no_argument, NULL, 'f'},
320 {"file-offsets", no_argument, NULL, 'F'},
321 {"file-start-context", no_argument, &file_start_context, 1},
322 {"full-contents", no_argument, NULL, 's'},
323 {"headers", no_argument, NULL, 'h'},
324 {"help", no_argument, NULL, 'H'},
325 {"info", no_argument, NULL, 'i'},
326 {"line-numbers", no_argument, NULL, 'l'},
327 {"no-show-raw-insn", no_argument, &show_raw_insn, -1},
328 {"prefix-addresses", no_argument, &prefix_addresses, 1},
329 {"reloc", no_argument, NULL, 'r'},
330 {"section", required_argument, NULL, 'j'},
331 {"section-headers", no_argument, NULL, 'h'},
332 {"show-raw-insn", no_argument, &show_raw_insn, 1},
333 {"source", no_argument, NULL, 'S'},
334 {"special-syms", no_argument, &dump_special_syms, 1},
335 {"include", required_argument, NULL, 'I'},
336 {"dwarf", optional_argument, NULL, OPTION_DWARF},
337 {"stabs", no_argument, NULL, 'G'},
338 {"start-address", required_argument, NULL, OPTION_START_ADDRESS},
339 {"stop-address", required_argument, NULL, OPTION_STOP_ADDRESS},
340 {"syms", no_argument, NULL, 't'},
341 {"target", required_argument, NULL, 'b'},
342 {"version", no_argument, NULL, 'V'},
343 {"wide", no_argument, NULL, 'w'},
344 {"prefix", required_argument, NULL, OPTION_PREFIX},
345 {"prefix-strip", required_argument, NULL, OPTION_PREFIX_STRIP},
346 {"insn-width", required_argument, NULL, OPTION_INSN_WIDTH},
347 {"dwarf-depth", required_argument, 0, OPTION_DWARF_DEPTH},
348 {"dwarf-start", required_argument, 0, OPTION_DWARF_START},
349 {"dwarf-check", no_argument, 0, OPTION_DWARF_CHECK},
350 {0, no_argument, 0, 0}
354 nonfatal (const char *msg)
360 /* Returns TRUE if the specified section should be dumped. */
363 process_section_p (asection * section)
367 if (only_list == NULL)
370 for (only = only_list; only; only = only->next)
371 if (strcmp (only->name, section->name) == 0)
380 /* Add an entry to the 'only' list. */
383 add_only (char * name)
387 /* First check to make sure that we do not
388 already have an entry for this name. */
389 for (only = only_list; only; only = only->next)
390 if (strcmp (only->name, name) == 0)
393 only = xmalloc (sizeof * only);
396 only->next = only_list;
400 /* Release the memory used by the 'only' list.
401 PR 11225: Issue a warning message for unseen sections.
402 Only do this if none of the sections were seen. This is mainly to support
403 tools like the GAS testsuite where an object file is dumped with a list of
404 generic section names known to be present in a range of different file
408 free_only_list (void)
410 bfd_boolean at_least_one_seen = FALSE;
414 if (only_list == NULL)
417 for (only = only_list; only; only = only->next)
420 at_least_one_seen = TRUE;
424 for (only = only_list; only; only = next)
426 if (! at_least_one_seen)
428 non_fatal (_("section '%s' mentioned in a -j option, "
429 "but not found in any input file"),
440 dump_section_header (bfd *abfd, asection *section,
441 void *ignored ATTRIBUTE_UNUSED)
444 unsigned int opb = bfd_octets_per_byte (abfd);
446 /* Ignore linker created section. See elfNN_ia64_object_p in
448 if (section->flags & SEC_LINKER_CREATED)
451 /* PR 10413: Skip sections that we are ignoring. */
452 if (! process_section_p (section))
455 printf ("%3d %-13s %08lx ", section->index,
456 bfd_get_section_name (abfd, section),
457 (unsigned long) bfd_section_size (abfd, section) / opb);
458 bfd_printf_vma (abfd, bfd_get_section_vma (abfd, section));
460 bfd_printf_vma (abfd, section->lma);
461 printf (" %08lx 2**%u", (unsigned long) section->filepos,
462 bfd_get_section_alignment (abfd, section));
468 if (section->flags & x) { printf ("%s%s", comma, y); comma = ", "; }
470 PF (SEC_HAS_CONTENTS, "CONTENTS");
471 PF (SEC_ALLOC, "ALLOC");
472 PF (SEC_CONSTRUCTOR, "CONSTRUCTOR");
473 PF (SEC_LOAD, "LOAD");
474 PF (SEC_RELOC, "RELOC");
475 PF (SEC_READONLY, "READONLY");
476 PF (SEC_CODE, "CODE");
477 PF (SEC_DATA, "DATA");
479 PF (SEC_DEBUGGING, "DEBUGGING");
480 PF (SEC_NEVER_LOAD, "NEVER_LOAD");
481 PF (SEC_EXCLUDE, "EXCLUDE");
482 PF (SEC_SORT_ENTRIES, "SORT_ENTRIES");
483 if (bfd_get_arch (abfd) == bfd_arch_tic54x)
485 PF (SEC_TIC54X_BLOCK, "BLOCK");
486 PF (SEC_TIC54X_CLINK, "CLINK");
488 PF (SEC_SMALL_DATA, "SMALL_DATA");
489 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
490 PF (SEC_COFF_SHARED, "SHARED");
491 PF (SEC_THREAD_LOCAL, "THREAD_LOCAL");
492 PF (SEC_GROUP, "GROUP");
494 if ((section->flags & SEC_LINK_ONCE) != 0)
497 struct coff_comdat_info *comdat;
499 switch (section->flags & SEC_LINK_DUPLICATES)
503 case SEC_LINK_DUPLICATES_DISCARD:
504 ls = "LINK_ONCE_DISCARD";
506 case SEC_LINK_DUPLICATES_ONE_ONLY:
507 ls = "LINK_ONCE_ONE_ONLY";
509 case SEC_LINK_DUPLICATES_SAME_SIZE:
510 ls = "LINK_ONCE_SAME_SIZE";
512 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
513 ls = "LINK_ONCE_SAME_CONTENTS";
516 printf ("%s%s", comma, ls);
518 comdat = bfd_coff_get_comdat_section (abfd, section);
520 printf (" (COMDAT %s %ld)", comdat->name, comdat->symbol);
530 dump_headers (bfd *abfd)
532 printf (_("Sections:\n"));
535 printf (_("Idx Name Size VMA LMA File off Algn"));
537 /* With BFD64, non-ELF returns -1 and wants always 64 bit addresses. */
538 if (bfd_get_arch_size (abfd) == 32)
539 printf (_("Idx Name Size VMA LMA File off Algn"));
541 printf (_("Idx Name Size VMA LMA File off Algn"));
545 printf (_(" Flags"));
548 bfd_map_over_sections (abfd, dump_section_header, NULL);
552 slurp_symtab (bfd *abfd)
557 if (!(bfd_get_file_flags (abfd) & HAS_SYMS))
563 storage = bfd_get_symtab_upper_bound (abfd);
566 non_fatal (_("failed to read symbol table from: %s"), bfd_get_filename (abfd));
567 bfd_fatal (_("error message was"));
570 sy = (asymbol **) xmalloc (storage);
572 symcount = bfd_canonicalize_symtab (abfd, sy);
574 bfd_fatal (bfd_get_filename (abfd));
578 /* Read in the dynamic symbols. */
581 slurp_dynamic_symtab (bfd *abfd)
586 storage = bfd_get_dynamic_symtab_upper_bound (abfd);
589 if (!(bfd_get_file_flags (abfd) & DYNAMIC))
591 non_fatal (_("%s: not a dynamic object"), bfd_get_filename (abfd));
597 bfd_fatal (bfd_get_filename (abfd));
600 sy = (asymbol **) xmalloc (storage);
602 dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, sy);
604 bfd_fatal (bfd_get_filename (abfd));
608 /* Filter out (in place) symbols that are useless for disassembly.
609 COUNT is the number of elements in SYMBOLS.
610 Return the number of useful symbols. */
613 remove_useless_symbols (asymbol **symbols, long count)
615 asymbol **in_ptr = symbols, **out_ptr = symbols;
619 asymbol *sym = *in_ptr++;
621 if (sym->name == NULL || sym->name[0] == '\0')
623 if (sym->flags & (BSF_DEBUGGING | BSF_SECTION_SYM))
625 if (bfd_is_und_section (sym->section)
626 || bfd_is_com_section (sym->section))
631 return out_ptr - symbols;
634 /* Sort symbols into value order. */
637 compare_symbols (const void *ap, const void *bp)
639 const asymbol *a = * (const asymbol **) ap;
640 const asymbol *b = * (const asymbol **) bp;
650 if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
652 else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
655 if (a->section > b->section)
657 else if (a->section < b->section)
660 an = bfd_asymbol_name (a);
661 bn = bfd_asymbol_name (b);
665 /* The symbols gnu_compiled and gcc2_compiled convey no real
666 information, so put them after other symbols with the same value. */
667 af = (strstr (an, "gnu_compiled") != NULL
668 || strstr (an, "gcc2_compiled") != NULL);
669 bf = (strstr (bn, "gnu_compiled") != NULL
670 || strstr (bn, "gcc2_compiled") != NULL);
677 /* We use a heuristic for the file name, to try to sort it after
678 more useful symbols. It may not work on non Unix systems, but it
679 doesn't really matter; the only difference is precisely which
680 symbol names get printed. */
682 #define file_symbol(s, sn, snl) \
683 (((s)->flags & BSF_FILE) != 0 \
684 || ((sn)[(snl) - 2] == '.' \
685 && ((sn)[(snl) - 1] == 'o' \
686 || (sn)[(snl) - 1] == 'a')))
688 af = file_symbol (a, an, anl);
689 bf = file_symbol (b, bn, bnl);
696 /* Try to sort global symbols before local symbols before function
697 symbols before debugging symbols. */
702 if ((aflags & BSF_DEBUGGING) != (bflags & BSF_DEBUGGING))
704 if ((aflags & BSF_DEBUGGING) != 0)
709 if ((aflags & BSF_FUNCTION) != (bflags & BSF_FUNCTION))
711 if ((aflags & BSF_FUNCTION) != 0)
716 if ((aflags & BSF_LOCAL) != (bflags & BSF_LOCAL))
718 if ((aflags & BSF_LOCAL) != 0)
723 if ((aflags & BSF_GLOBAL) != (bflags & BSF_GLOBAL))
725 if ((aflags & BSF_GLOBAL) != 0)
731 /* Symbols that start with '.' might be section names, so sort them
732 after symbols that don't start with '.'. */
733 if (an[0] == '.' && bn[0] != '.')
735 if (an[0] != '.' && bn[0] == '.')
738 /* Finally, if we can't distinguish them in any other way, try to
739 get consistent results by sorting the symbols by name. */
740 return strcmp (an, bn);
743 /* Sort relocs into address order. */
746 compare_relocs (const void *ap, const void *bp)
748 const arelent *a = * (const arelent **) ap;
749 const arelent *b = * (const arelent **) bp;
751 if (a->address > b->address)
753 else if (a->address < b->address)
756 /* So that associated relocations tied to the same address show up
757 in the correct order, we don't do any further sorting. */
766 /* Print an address (VMA) to the output stream in INFO.
767 If SKIP_ZEROES is TRUE, omit leading zeroes. */
770 objdump_print_value (bfd_vma vma, struct disassemble_info *inf,
771 bfd_boolean skip_zeroes)
775 struct objdump_disasm_info *aux;
777 aux = (struct objdump_disasm_info *) inf->application_data;
778 bfd_sprintf_vma (aux->abfd, buf, vma);
783 for (p = buf; *p == '0'; ++p)
788 (*inf->fprintf_func) (inf->stream, "%s", p);
791 /* Print the name of a symbol. */
794 objdump_print_symname (bfd *abfd, struct disassemble_info *inf,
798 const char *name, *version_string = NULL;
799 bfd_boolean hidden = FALSE;
802 name = bfd_asymbol_name (sym);
803 if (do_demangle && name[0] != '\0')
805 /* Demangle the name. */
806 alloc = bfd_demangle (abfd, name, DMGL_ANSI | DMGL_PARAMS);
811 version_string = bfd_get_symbol_version_string (abfd, sym, &hidden);
813 if (bfd_is_und_section (bfd_get_section (sym)))
818 (*inf->fprintf_func) (inf->stream, "%s", name);
819 if (version_string && *version_string != '\0')
820 (*inf->fprintf_func) (inf->stream, hidden ? "@%s" : "@@%s",
826 if (version_string && *version_string != '\0')
827 printf (hidden ? "@%s" : "@@%s", version_string);
834 /* Locate a symbol given a bfd and a section (from INFO->application_data),
835 and a VMA. If INFO->application_data->require_sec is TRUE, then always
836 require the symbol to be in the section. Returns NULL if there is no
837 suitable symbol. If PLACE is not NULL, then *PLACE is set to the index
838 of the symbol in sorted_syms. */
841 find_symbol_for_address (bfd_vma vma,
842 struct disassemble_info *inf,
845 /* @@ Would it speed things up to cache the last two symbols returned,
846 and maybe their address ranges? For many processors, only one memory
847 operand can be present at a time, so the 2-entry cache wouldn't be
848 constantly churned by code doing heavy memory accesses. */
850 /* Indices in `sorted_syms'. */
852 long max_count = sorted_symcount;
854 struct objdump_disasm_info *aux;
858 bfd_boolean want_section;
860 if (sorted_symcount < 1)
863 aux = (struct objdump_disasm_info *) inf->application_data;
866 opb = inf->octets_per_byte;
868 /* Perform a binary search looking for the closest symbol to the
869 required value. We are searching the range (min, max_count]. */
870 while (min + 1 < max_count)
874 thisplace = (max_count + min) / 2;
875 sym = sorted_syms[thisplace];
877 if (bfd_asymbol_value (sym) > vma)
878 max_count = thisplace;
879 else if (bfd_asymbol_value (sym) < vma)
888 /* The symbol we want is now in min, the low end of the range we
889 were searching. If there are several symbols with the same
890 value, we want the first one. */
893 && (bfd_asymbol_value (sorted_syms[thisplace])
894 == bfd_asymbol_value (sorted_syms[thisplace - 1])))
897 /* Prefer a symbol in the current section if we have multple symbols
898 with the same value, as can occur with overlays or zero size
901 while (min < max_count
902 && (bfd_asymbol_value (sorted_syms[min])
903 == bfd_asymbol_value (sorted_syms[thisplace])))
905 if (sorted_syms[min]->section == sec
906 && inf->symbol_is_valid (sorted_syms[min], inf))
913 return sorted_syms[thisplace];
918 /* If the file is relocatable, and the symbol could be from this
919 section, prefer a symbol from this section over symbols from
920 others, even if the other symbol's value might be closer.
922 Note that this may be wrong for some symbol references if the
923 sections have overlapping memory ranges, but in that case there's
924 no way to tell what's desired without looking at the relocation
927 Also give the target a chance to reject symbols. */
928 want_section = (aux->require_sec
929 || ((abfd->flags & HAS_RELOC) != 0
930 && vma >= bfd_get_section_vma (abfd, sec)
931 && vma < (bfd_get_section_vma (abfd, sec)
932 + bfd_section_size (abfd, sec) / opb)));
933 if ((sorted_syms[thisplace]->section != sec && want_section)
934 || ! inf->symbol_is_valid (sorted_syms[thisplace], inf))
937 long newplace = sorted_symcount;
939 for (i = min - 1; i >= 0; i--)
941 if ((sorted_syms[i]->section == sec || !want_section)
942 && inf->symbol_is_valid (sorted_syms[i], inf))
944 if (newplace == sorted_symcount)
947 if (bfd_asymbol_value (sorted_syms[i])
948 != bfd_asymbol_value (sorted_syms[newplace]))
951 /* Remember this symbol and keep searching until we reach
952 an earlier address. */
957 if (newplace != sorted_symcount)
958 thisplace = newplace;
961 /* We didn't find a good symbol with a smaller value.
962 Look for one with a larger value. */
963 for (i = thisplace + 1; i < sorted_symcount; i++)
965 if ((sorted_syms[i]->section == sec || !want_section)
966 && inf->symbol_is_valid (sorted_syms[i], inf))
974 if ((sorted_syms[thisplace]->section != sec && want_section)
975 || ! inf->symbol_is_valid (sorted_syms[thisplace], inf))
976 /* There is no suitable symbol. */
983 return sorted_syms[thisplace];
986 /* Print an address and the offset to the nearest symbol. */
989 objdump_print_addr_with_sym (bfd *abfd, asection *sec, asymbol *sym,
990 bfd_vma vma, struct disassemble_info *inf,
991 bfd_boolean skip_zeroes)
993 objdump_print_value (vma, inf, skip_zeroes);
999 (*inf->fprintf_func) (inf->stream, " <%s",
1000 bfd_get_section_name (abfd, sec));
1001 secaddr = bfd_get_section_vma (abfd, sec);
1004 (*inf->fprintf_func) (inf->stream, "-0x");
1005 objdump_print_value (secaddr - vma, inf, TRUE);
1007 else if (vma > secaddr)
1009 (*inf->fprintf_func) (inf->stream, "+0x");
1010 objdump_print_value (vma - secaddr, inf, TRUE);
1012 (*inf->fprintf_func) (inf->stream, ">");
1016 (*inf->fprintf_func) (inf->stream, " <");
1017 objdump_print_symname (abfd, inf, sym);
1018 if (bfd_asymbol_value (sym) > vma)
1020 (*inf->fprintf_func) (inf->stream, "-0x");
1021 objdump_print_value (bfd_asymbol_value (sym) - vma, inf, TRUE);
1023 else if (vma > bfd_asymbol_value (sym))
1025 (*inf->fprintf_func) (inf->stream, "+0x");
1026 objdump_print_value (vma - bfd_asymbol_value (sym), inf, TRUE);
1028 (*inf->fprintf_func) (inf->stream, ">");
1031 if (display_file_offsets)
1032 inf->fprintf_func (inf->stream, _(" (File Offset: 0x%lx)"),
1033 (long int)(sec->filepos + (vma - sec->vma)));
1036 /* Print an address (VMA), symbolically if possible.
1037 If SKIP_ZEROES is TRUE, don't output leading zeroes. */
1040 objdump_print_addr (bfd_vma vma,
1041 struct disassemble_info *inf,
1042 bfd_boolean skip_zeroes)
1044 struct objdump_disasm_info *aux;
1045 asymbol *sym = NULL;
1046 bfd_boolean skip_find = FALSE;
1048 aux = (struct objdump_disasm_info *) inf->application_data;
1050 if (sorted_symcount < 1)
1052 (*inf->fprintf_func) (inf->stream, "0x");
1053 objdump_print_value (vma, inf, skip_zeroes);
1055 if (display_file_offsets)
1056 inf->fprintf_func (inf->stream, _(" (File Offset: 0x%lx)"),
1057 (long int)(aux->sec->filepos + (vma - aux->sec->vma)));
1061 if (aux->reloc != NULL
1062 && aux->reloc->sym_ptr_ptr != NULL
1063 && * aux->reloc->sym_ptr_ptr != NULL)
1065 sym = * aux->reloc->sym_ptr_ptr;
1067 /* Adjust the vma to the reloc. */
1068 vma += bfd_asymbol_value (sym);
1070 if (bfd_is_und_section (bfd_get_section (sym)))
1075 sym = find_symbol_for_address (vma, inf, NULL);
1077 objdump_print_addr_with_sym (aux->abfd, aux->sec, sym, vma, inf,
1081 /* Print VMA to INFO. This function is passed to the disassembler
1085 objdump_print_address (bfd_vma vma, struct disassemble_info *inf)
1087 objdump_print_addr (vma, inf, ! prefix_addresses);
1090 /* Determine if the given address has a symbol associated with it. */
1093 objdump_symbol_at_address (bfd_vma vma, struct disassemble_info * inf)
1097 sym = find_symbol_for_address (vma, inf, NULL);
1099 return (sym != NULL && (bfd_asymbol_value (sym) == vma));
1102 /* Hold the last function name and the last line number we displayed
1103 in a disassembly. */
1105 static char *prev_functionname;
1106 static unsigned int prev_line;
1107 static unsigned int prev_discriminator;
1109 /* We keep a list of all files that we have seen when doing a
1110 disassembly with source, so that we know how much of the file to
1111 display. This can be important for inlined functions. */
1113 struct print_file_list
1115 struct print_file_list *next;
1116 const char *filename;
1117 const char *modname;
1120 const char **linemap;
1126 static struct print_file_list *print_files;
1128 /* The number of preceding context lines to show when we start
1129 displaying a file for the first time. */
1131 #define SHOW_PRECEDING_CONTEXT_LINES (5)
1133 /* Read a complete file into memory. */
1136 slurp_file (const char *fn, size_t *size)
1139 int ps = getpagesize ();
1144 int fd = open (fn, O_RDONLY | O_BINARY);
1148 if (fstat (fd, &st) < 0)
1155 msize = (*size + ps - 1) & ~(ps - 1);
1156 map = mmap (NULL, msize, PROT_READ, MAP_SHARED, fd, 0);
1157 if (map != (char *) -1L)
1163 map = (const char *) malloc (*size);
1164 if (!map || (size_t) read (fd, (char *) map, *size) != *size)
1166 free ((void *) map);
1173 #define line_map_decrease 5
1175 /* Precompute array of lines for a mapped file. */
1177 static const char **
1178 index_file (const char *map, size_t size, unsigned int *maxline)
1180 const char *p, *lstart, *end;
1181 int chars_per_line = 45; /* First iteration will use 40. */
1182 unsigned int lineno;
1183 const char **linemap = NULL;
1184 unsigned long line_map_size = 0;
1190 for (p = map; p < end; p++)
1194 if (p + 1 < end && p[1] == '\r')
1197 else if (*p == '\r')
1199 if (p + 1 < end && p[1] == '\n')
1205 /* End of line found. */
1207 if (linemap == NULL || line_map_size < lineno + 1)
1209 unsigned long newsize;
1211 chars_per_line -= line_map_decrease;
1212 if (chars_per_line <= 1)
1214 line_map_size = size / chars_per_line + 1;
1215 if (line_map_size < lineno + 1)
1216 line_map_size = lineno + 1;
1217 newsize = line_map_size * sizeof (char *);
1218 linemap = (const char **) xrealloc (linemap, newsize);
1221 linemap[lineno++] = lstart;
1229 /* Tries to open MODNAME, and if successful adds a node to print_files
1230 linked list and returns that node. Returns NULL on failure. */
1232 static struct print_file_list *
1233 try_print_file_open (const char *origname, const char *modname)
1235 struct print_file_list *p;
1237 p = (struct print_file_list *) xmalloc (sizeof (struct print_file_list));
1239 p->map = slurp_file (modname, &p->mapsize);
1246 p->linemap = index_file (p->map, p->mapsize, &p->maxline);
1248 p->filename = origname;
1249 p->modname = modname;
1250 p->next = print_files;
1256 /* If the source file, as described in the symtab, is not found
1257 try to locate it in one of the paths specified with -I
1258 If found, add location to print_files linked list. */
1260 static struct print_file_list *
1261 update_source_path (const char *filename)
1263 struct print_file_list *p;
1267 p = try_print_file_open (filename, filename);
1271 if (include_path_count == 0)
1274 /* Get the name of the file. */
1275 fname = lbasename (filename);
1277 /* If file exists under a new path, we need to add it to the list
1278 so that show_line knows about it. */
1279 for (i = 0; i < include_path_count; i++)
1281 char *modname = concat (include_paths[i], "/", fname, (const char *) 0);
1283 p = try_print_file_open (filename, modname);
1293 /* Print a source file line. */
1296 print_line (struct print_file_list *p, unsigned int linenum)
1302 if (linenum >= p->maxline)
1304 l = p->linemap [linenum];
1305 /* Test fwrite return value to quiet glibc warning. */
1306 len = strcspn (l, "\n\r");
1307 if (len == 0 || fwrite (l, len, 1, stdout) == 1)
1311 /* Print a range of source code lines. */
1314 dump_lines (struct print_file_list *p, unsigned int start, unsigned int end)
1318 while (start <= end)
1320 print_line (p, start);
1325 /* Show the line number, or the source line, in a disassembly
1329 show_line (bfd *abfd, asection *section, bfd_vma addr_offset)
1331 const char *filename;
1332 const char *functionname;
1333 unsigned int linenumber;
1334 unsigned int discriminator;
1337 if (! with_line_numbers && ! with_source_code)
1340 if (! bfd_find_nearest_line_discriminator (abfd, section, syms, addr_offset,
1341 &filename, &functionname,
1342 &linenumber, &discriminator))
1345 if (filename != NULL && *filename == '\0')
1347 if (functionname != NULL && *functionname == '\0')
1348 functionname = NULL;
1351 && IS_ABSOLUTE_PATH (filename)
1355 const char *fname = filename;
1356 char *path = (char *) alloca (prefix_length + PATH_MAX + 1);
1359 memcpy (path, prefix, prefix_length);
1360 path_up = path + prefix_length;
1362 /* Build relocated filename, stripping off leading directories
1363 from the initial filename if requested. */
1364 if (prefix_strip > 0)
1369 /* Skip selected directory levels. */
1370 for (s = fname + 1; *s != '\0' && level < prefix_strip; s++)
1371 if (IS_DIR_SEPARATOR(*s))
1378 /* Update complete filename. */
1379 strncpy (path_up, fname, PATH_MAX);
1380 path_up[PATH_MAX] = '\0';
1388 if (with_line_numbers)
1390 if (functionname != NULL
1391 && (prev_functionname == NULL
1392 || strcmp (functionname, prev_functionname) != 0))
1393 printf ("%s():\n", functionname);
1394 if (linenumber > 0 && (linenumber != prev_line ||
1395 (discriminator != prev_discriminator)))
1397 if (discriminator > 0)
1398 printf ("%s:%u (discriminator %u)\n", filename == NULL ? "???" : filename,
1399 linenumber, discriminator);
1401 printf ("%s:%u\n", filename == NULL ? "???" : filename, linenumber);
1405 if (with_source_code
1409 struct print_file_list **pp, *p;
1412 for (pp = &print_files; *pp != NULL; pp = &(*pp)->next)
1413 if (filename_cmp ((*pp)->filename, filename) == 0)
1420 filename = xstrdup (filename);
1421 p = update_source_path (filename);
1424 if (p != NULL && linenumber != p->last_line)
1426 if (file_start_context && p->first)
1430 l = linenumber - SHOW_PRECEDING_CONTEXT_LINES;
1431 if (l >= linenumber)
1433 if (p->last_line >= l && p->last_line <= linenumber)
1434 l = p->last_line + 1;
1436 dump_lines (p, l, linenumber);
1437 p->last_line = linenumber;
1442 if (functionname != NULL
1443 && (prev_functionname == NULL
1444 || strcmp (functionname, prev_functionname) != 0))
1446 if (prev_functionname != NULL)
1447 free (prev_functionname);
1448 prev_functionname = (char *) xmalloc (strlen (functionname) + 1);
1449 strcpy (prev_functionname, functionname);
1452 if (linenumber > 0 && linenumber != prev_line)
1453 prev_line = linenumber;
1455 if (discriminator != prev_discriminator)
1456 prev_discriminator = discriminator;
1459 /* Pseudo FILE object for strings. */
1467 /* sprintf to a "stream". */
1469 static int ATTRIBUTE_PRINTF_2
1470 objdump_sprintf (SFILE *f, const char *format, ...)
1477 size_t space = f->alloc - f->pos;
1479 va_start (args, format);
1480 n = vsnprintf (f->buffer + f->pos, space, format, args);
1486 f->alloc = (f->alloc + n) * 2;
1487 f->buffer = (char *) xrealloc (f->buffer, f->alloc);
1494 /* The number of zeroes we want to see before we start skipping them.
1495 The number is arbitrarily chosen. */
1497 #define DEFAULT_SKIP_ZEROES 8
1499 /* The number of zeroes to skip at the end of a section. If the
1500 number of zeroes at the end is between SKIP_ZEROES_AT_END and
1501 SKIP_ZEROES, they will be disassembled. If there are fewer than
1502 SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic
1503 attempt to avoid disassembling zeroes inserted by section
1506 #define DEFAULT_SKIP_ZEROES_AT_END 3
1508 /* Disassemble some data in memory between given values. */
1511 disassemble_bytes (struct disassemble_info * inf,
1512 disassembler_ftype disassemble_fn,
1515 bfd_vma start_offset,
1516 bfd_vma stop_offset,
1519 arelent ** relppend)
1521 struct objdump_disasm_info *aux;
1523 int octets_per_line;
1524 int skip_addr_chars;
1525 bfd_vma addr_offset;
1526 unsigned int opb = inf->octets_per_byte;
1527 unsigned int skip_zeroes = inf->skip_zeroes;
1528 unsigned int skip_zeroes_at_end = inf->skip_zeroes_at_end;
1532 aux = (struct objdump_disasm_info *) inf->application_data;
1536 sfile.buffer = (char *) xmalloc (sfile.alloc);
1540 octets_per_line = insn_width;
1542 octets_per_line = 4;
1544 octets_per_line = 16;
1546 /* Figure out how many characters to skip at the start of an
1547 address, to make the disassembly look nicer. We discard leading
1548 zeroes in chunks of 4, ensuring that there is always a leading
1550 skip_addr_chars = 0;
1551 if (! prefix_addresses)
1555 bfd_sprintf_vma (aux->abfd, buf, section->vma + section->size / opb);
1557 while (buf[skip_addr_chars] == '0')
1560 /* Don't discard zeros on overflow. */
1561 if (buf[skip_addr_chars] == '\0' && section->vma != 0)
1562 skip_addr_chars = 0;
1564 if (skip_addr_chars != 0)
1565 skip_addr_chars = (skip_addr_chars - 1) & -4;
1568 inf->insn_info_valid = 0;
1570 addr_offset = start_offset;
1571 while (addr_offset < stop_offset)
1574 bfd_boolean need_nl = FALSE;
1575 int previous_octets;
1577 /* Remember the length of the previous instruction. */
1578 previous_octets = octets;
1581 /* Make sure we don't use relocs from previous instructions. */
1584 /* If we see more than SKIP_ZEROES octets of zeroes, we just
1586 for (z = addr_offset * opb; z < stop_offset * opb; z++)
1589 if (! disassemble_zeroes
1590 && (inf->insn_info_valid == 0
1591 || inf->branch_delay_insns == 0)
1592 && (z - addr_offset * opb >= skip_zeroes
1593 || (z == stop_offset * opb &&
1594 z - addr_offset * opb < skip_zeroes_at_end)))
1596 /* If there are more nonzero octets to follow, we only skip
1597 zeroes in multiples of 4, to try to avoid running over
1598 the start of an instruction which happens to start with
1600 if (z != stop_offset * opb)
1601 z = addr_offset * opb + ((z - addr_offset * opb) &~ 3);
1603 octets = z - addr_offset * opb;
1605 /* If we are going to display more data, and we are displaying
1606 file offsets, then tell the user how many zeroes we skip
1607 and the file offset from where we resume dumping. */
1608 if (display_file_offsets && ((addr_offset + (octets / opb)) < stop_offset))
1609 printf ("\t... (skipping %d zeroes, resuming at file offset: 0x%lx)\n",
1611 (unsigned long) (section->filepos
1612 + (addr_offset + (octets / opb))));
1622 if (with_line_numbers || with_source_code)
1623 show_line (aux->abfd, section, addr_offset);
1625 if (! prefix_addresses)
1629 bfd_sprintf_vma (aux->abfd, buf, section->vma + addr_offset);
1630 for (s = buf + skip_addr_chars; *s == '0'; s++)
1634 printf ("%s:\t", buf + skip_addr_chars);
1638 aux->require_sec = TRUE;
1639 objdump_print_address (section->vma + addr_offset, inf);
1640 aux->require_sec = FALSE;
1647 inf->fprintf_func = (fprintf_ftype) objdump_sprintf;
1648 inf->stream = &sfile;
1649 inf->bytes_per_line = 0;
1650 inf->bytes_per_chunk = 0;
1651 inf->flags = disassemble_all ? DISASSEMBLE_DATA : 0;
1653 inf->flags |= USER_SPECIFIED_MACHINE_TYPE;
1655 if (inf->disassembler_needs_relocs
1656 && (bfd_get_file_flags (aux->abfd) & EXEC_P) == 0
1657 && (bfd_get_file_flags (aux->abfd) & DYNAMIC) == 0
1658 && *relppp < relppend)
1660 bfd_signed_vma distance_to_rel;
1662 distance_to_rel = (**relppp)->address
1663 - (rel_offset + addr_offset);
1665 /* Check to see if the current reloc is associated with
1666 the instruction that we are about to disassemble. */
1667 if (distance_to_rel == 0
1668 /* FIXME: This is wrong. We are trying to catch
1669 relocs that are addressed part way through the
1670 current instruction, as might happen with a packed
1671 VLIW instruction. Unfortunately we do not know the
1672 length of the current instruction since we have not
1673 disassembled it yet. Instead we take a guess based
1674 upon the length of the previous instruction. The
1675 proper solution is to have a new target-specific
1676 disassembler function which just returns the length
1677 of an instruction at a given address without trying
1678 to display its disassembly. */
1679 || (distance_to_rel > 0
1680 && distance_to_rel < (bfd_signed_vma) (previous_octets/ opb)))
1682 inf->flags |= INSN_HAS_RELOC;
1683 aux->reloc = **relppp;
1687 octets = (*disassemble_fn) (section->vma + addr_offset, inf);
1688 inf->fprintf_func = (fprintf_ftype) fprintf;
1689 inf->stream = stdout;
1690 if (insn_width == 0 && inf->bytes_per_line != 0)
1691 octets_per_line = inf->bytes_per_line;
1692 if (octets < (int) opb)
1695 printf ("%s\n", sfile.buffer);
1698 non_fatal (_("disassemble_fn returned length %d"),
1709 octets = octets_per_line;
1710 if (addr_offset + octets / opb > stop_offset)
1711 octets = (stop_offset - addr_offset) * opb;
1713 for (j = addr_offset * opb; j < addr_offset * opb + octets; ++j)
1715 if (ISPRINT (data[j]))
1716 buf[j - addr_offset * opb] = data[j];
1718 buf[j - addr_offset * opb] = '.';
1720 buf[j - addr_offset * opb] = '\0';
1723 if (prefix_addresses
1725 : show_raw_insn >= 0)
1729 /* If ! prefix_addresses and ! wide_output, we print
1730 octets_per_line octets per line. */
1732 if (pb > octets_per_line && ! prefix_addresses && ! wide_output)
1733 pb = octets_per_line;
1735 if (inf->bytes_per_chunk)
1736 bpc = inf->bytes_per_chunk;
1740 for (j = addr_offset * opb; j < addr_offset * opb + pb; j += bpc)
1744 if (bpc > 1 && inf->display_endian == BFD_ENDIAN_LITTLE)
1746 for (k = bpc - 1; k >= 0; k--)
1747 printf ("%02x", (unsigned) data[j + k]);
1752 for (k = 0; k < bpc; k++)
1753 printf ("%02x", (unsigned) data[j + k]);
1758 for (; pb < octets_per_line; pb += bpc)
1762 for (k = 0; k < bpc; k++)
1767 /* Separate raw data from instruction by extra space. */
1777 printf ("%s", sfile.buffer);
1779 if (prefix_addresses
1781 : show_raw_insn >= 0)
1789 j = addr_offset * opb + pb;
1791 bfd_sprintf_vma (aux->abfd, buf, section->vma + j / opb);
1792 for (s = buf + skip_addr_chars; *s == '0'; s++)
1796 printf ("%s:\t", buf + skip_addr_chars);
1798 pb += octets_per_line;
1801 for (; j < addr_offset * opb + pb; j += bpc)
1805 if (bpc > 1 && inf->display_endian == BFD_ENDIAN_LITTLE)
1807 for (k = bpc - 1; k >= 0; k--)
1808 printf ("%02x", (unsigned) data[j + k]);
1813 for (k = 0; k < bpc; k++)
1814 printf ("%02x", (unsigned) data[j + k]);
1827 while ((*relppp) < relppend
1828 && (**relppp)->address < rel_offset + addr_offset + octets / opb)
1830 if (dump_reloc_info || dump_dynamic_reloc_info)
1841 objdump_print_value (section->vma - rel_offset + q->address,
1844 if (q->howto == NULL)
1845 printf (": *unknown*\t");
1846 else if (q->howto->name)
1847 printf (": %s\t", q->howto->name);
1849 printf (": %d\t", q->howto->type);
1851 if (q->sym_ptr_ptr == NULL || *q->sym_ptr_ptr == NULL)
1852 printf ("*unknown*");
1855 const char *sym_name;
1857 sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
1858 if (sym_name != NULL && *sym_name != '\0')
1859 objdump_print_symname (aux->abfd, inf, *q->sym_ptr_ptr);
1864 sym_sec = bfd_get_section (*q->sym_ptr_ptr);
1865 sym_name = bfd_get_section_name (aux->abfd, sym_sec);
1866 if (sym_name == NULL || *sym_name == '\0')
1867 sym_name = "*unknown*";
1868 printf ("%s", sym_name);
1874 bfd_signed_vma addend = q->addend;
1882 objdump_print_value (addend, inf, TRUE);
1894 addr_offset += octets / opb;
1897 free (sfile.buffer);
1901 disassemble_section (bfd *abfd, asection *section, void *inf)
1903 const struct elf_backend_data * bed;
1904 bfd_vma sign_adjust = 0;
1905 struct disassemble_info * pinfo = (struct disassemble_info *) inf;
1906 struct objdump_disasm_info * paux;
1907 unsigned int opb = pinfo->octets_per_byte;
1908 bfd_byte * data = NULL;
1909 bfd_size_type datasize = 0;
1910 arelent ** rel_pp = NULL;
1911 arelent ** rel_ppstart = NULL;
1912 arelent ** rel_ppend;
1913 unsigned long stop_offset;
1914 asymbol * sym = NULL;
1918 unsigned long addr_offset;
1920 /* Sections that do not contain machine
1921 code are not normally disassembled. */
1922 if (! disassemble_all
1923 && only_list == NULL
1924 && ((section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
1925 != (SEC_CODE | SEC_HAS_CONTENTS)))
1928 if (! process_section_p (section))
1931 datasize = bfd_get_section_size (section);
1935 if (start_address == (bfd_vma) -1
1936 || start_address < section->vma)
1939 addr_offset = start_address - section->vma;
1941 if (stop_address == (bfd_vma) -1)
1942 stop_offset = datasize / opb;
1945 if (stop_address < section->vma)
1948 stop_offset = stop_address - section->vma;
1949 if (stop_offset > datasize / opb)
1950 stop_offset = datasize / opb;
1953 if (addr_offset >= stop_offset)
1956 /* Decide which set of relocs to use. Load them if necessary. */
1957 paux = (struct objdump_disasm_info *) pinfo->application_data;
1958 if (paux->dynrelbuf)
1960 rel_pp = paux->dynrelbuf;
1961 rel_count = paux->dynrelcount;
1962 /* Dynamic reloc addresses are absolute, non-dynamic are section
1963 relative. REL_OFFSET specifies the reloc address corresponding
1964 to the start of this section. */
1965 rel_offset = section->vma;
1973 if ((section->flags & SEC_RELOC) != 0
1974 && (dump_reloc_info || pinfo->disassembler_needs_relocs))
1978 relsize = bfd_get_reloc_upper_bound (abfd, section);
1980 bfd_fatal (bfd_get_filename (abfd));
1984 rel_ppstart = rel_pp = (arelent **) xmalloc (relsize);
1985 rel_count = bfd_canonicalize_reloc (abfd, section, rel_pp, syms);
1987 bfd_fatal (bfd_get_filename (abfd));
1989 /* Sort the relocs by address. */
1990 qsort (rel_pp, rel_count, sizeof (arelent *), compare_relocs);
1994 rel_ppend = rel_pp + rel_count;
1996 data = (bfd_byte *) xmalloc (datasize);
1998 bfd_get_section_contents (abfd, section, data, 0, datasize);
2000 paux->sec = section;
2001 pinfo->buffer = data;
2002 pinfo->buffer_vma = section->vma;
2003 pinfo->buffer_length = datasize;
2004 pinfo->section = section;
2006 /* Skip over the relocs belonging to addresses below the
2008 while (rel_pp < rel_ppend
2009 && (*rel_pp)->address < rel_offset + addr_offset)
2012 printf (_("\nDisassembly of section %s:\n"), section->name);
2014 /* Find the nearest symbol forwards from our current position. */
2015 paux->require_sec = TRUE;
2016 sym = (asymbol *) find_symbol_for_address (section->vma + addr_offset,
2017 (struct disassemble_info *) inf,
2019 paux->require_sec = FALSE;
2021 /* PR 9774: If the target used signed addresses then we must make
2022 sure that we sign extend the value that we calculate for 'addr'
2023 in the loop below. */
2024 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
2025 && (bed = get_elf_backend_data (abfd)) != NULL
2026 && bed->sign_extend_vma)
2027 sign_adjust = (bfd_vma) 1 << (bed->s->arch_size - 1);
2029 /* Disassemble a block of instructions up to the address associated with
2030 the symbol we have just found. Then print the symbol and find the
2031 next symbol on. Repeat until we have disassembled the entire section
2032 or we have reached the end of the address range we are interested in. */
2033 while (addr_offset < stop_offset)
2037 unsigned long nextstop_offset;
2040 addr = section->vma + addr_offset;
2041 addr = ((addr & ((sign_adjust << 1) - 1)) ^ sign_adjust) - sign_adjust;
2043 if (sym != NULL && bfd_asymbol_value (sym) <= addr)
2048 (x < sorted_symcount
2049 && (bfd_asymbol_value (sorted_syms[x]) <= addr));
2053 pinfo->symbols = sorted_syms + place;
2054 pinfo->num_symbols = x - place;
2055 pinfo->symtab_pos = place;
2059 pinfo->symbols = NULL;
2060 pinfo->num_symbols = 0;
2061 pinfo->symtab_pos = -1;
2064 if (! prefix_addresses)
2066 pinfo->fprintf_func (pinfo->stream, "\n");
2067 objdump_print_addr_with_sym (abfd, section, sym, addr,
2069 pinfo->fprintf_func (pinfo->stream, ":\n");
2072 if (sym != NULL && bfd_asymbol_value (sym) > addr)
2074 else if (sym == NULL)
2078 #define is_valid_next_sym(SYM) \
2079 ((SYM)->section == section \
2080 && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
2081 && pinfo->symbol_is_valid (SYM, pinfo))
2083 /* Search forward for the next appropriate symbol in
2084 SECTION. Note that all the symbols are sorted
2085 together into one big array, and that some sections
2086 may have overlapping addresses. */
2087 while (place < sorted_symcount
2088 && ! is_valid_next_sym (sorted_syms [place]))
2091 if (place >= sorted_symcount)
2094 nextsym = sorted_syms[place];
2097 if (sym != NULL && bfd_asymbol_value (sym) > addr)
2098 nextstop_offset = bfd_asymbol_value (sym) - section->vma;
2099 else if (nextsym == NULL)
2100 nextstop_offset = stop_offset;
2102 nextstop_offset = bfd_asymbol_value (nextsym) - section->vma;
2104 if (nextstop_offset > stop_offset
2105 || nextstop_offset <= addr_offset)
2106 nextstop_offset = stop_offset;
2108 /* If a symbol is explicitly marked as being an object
2109 rather than a function, just dump the bytes without
2110 disassembling them. */
2113 || sym->section != section
2114 || bfd_asymbol_value (sym) > addr
2115 || ((sym->flags & BSF_OBJECT) == 0
2116 && (strstr (bfd_asymbol_name (sym), "gnu_compiled")
2118 && (strstr (bfd_asymbol_name (sym), "gcc2_compiled")
2120 || (sym->flags & BSF_FUNCTION) != 0)
2125 disassemble_bytes (pinfo, paux->disassemble_fn, insns, data,
2126 addr_offset, nextstop_offset,
2127 rel_offset, &rel_pp, rel_ppend);
2129 addr_offset = nextstop_offset;
2135 if (rel_ppstart != NULL)
2139 /* Disassemble the contents of an object file. */
2142 disassemble_data (bfd *abfd)
2144 struct disassemble_info disasm_info;
2145 struct objdump_disasm_info aux;
2149 prev_functionname = NULL;
2151 prev_discriminator = 0;
2153 /* We make a copy of syms to sort. We don't want to sort syms
2154 because that will screw up the relocs. */
2155 sorted_symcount = symcount ? symcount : dynsymcount;
2156 sorted_syms = (asymbol **) xmalloc ((sorted_symcount + synthcount)
2157 * sizeof (asymbol *));
2158 memcpy (sorted_syms, symcount ? syms : dynsyms,
2159 sorted_symcount * sizeof (asymbol *));
2161 sorted_symcount = remove_useless_symbols (sorted_syms, sorted_symcount);
2163 for (i = 0; i < synthcount; ++i)
2165 sorted_syms[sorted_symcount] = synthsyms + i;
2169 /* Sort the symbols into section and symbol order. */
2170 qsort (sorted_syms, sorted_symcount, sizeof (asymbol *), compare_symbols);
2172 init_disassemble_info (&disasm_info, stdout, (fprintf_ftype) fprintf);
2174 disasm_info.application_data = (void *) &aux;
2176 aux.require_sec = FALSE;
2177 aux.dynrelbuf = NULL;
2178 aux.dynrelcount = 0;
2181 disasm_info.print_address_func = objdump_print_address;
2182 disasm_info.symbol_at_address_func = objdump_symbol_at_address;
2184 if (machine != NULL)
2186 const bfd_arch_info_type *inf = bfd_scan_arch (machine);
2189 fatal (_("can't use supplied machine %s"), machine);
2191 abfd->arch_info = inf;
2194 if (endian != BFD_ENDIAN_UNKNOWN)
2196 struct bfd_target *xvec;
2198 xvec = (struct bfd_target *) xmalloc (sizeof (struct bfd_target));
2199 memcpy (xvec, abfd->xvec, sizeof (struct bfd_target));
2200 xvec->byteorder = endian;
2204 /* Use libopcodes to locate a suitable disassembler. */
2205 aux.disassemble_fn = disassembler (abfd);
2206 if (!aux.disassemble_fn)
2208 non_fatal (_("can't disassemble for architecture %s\n"),
2209 bfd_printable_arch_mach (bfd_get_arch (abfd), 0));
2214 disasm_info.flavour = bfd_get_flavour (abfd);
2215 disasm_info.arch = bfd_get_arch (abfd);
2216 disasm_info.mach = bfd_get_mach (abfd);
2217 disasm_info.disassembler_options = disassembler_options;
2218 disasm_info.octets_per_byte = bfd_octets_per_byte (abfd);
2219 disasm_info.skip_zeroes = DEFAULT_SKIP_ZEROES;
2220 disasm_info.skip_zeroes_at_end = DEFAULT_SKIP_ZEROES_AT_END;
2221 disasm_info.disassembler_needs_relocs = FALSE;
2223 if (bfd_big_endian (abfd))
2224 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_BIG;
2225 else if (bfd_little_endian (abfd))
2226 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_LITTLE;
2228 /* ??? Aborting here seems too drastic. We could default to big or little
2230 disasm_info.endian = BFD_ENDIAN_UNKNOWN;
2232 /* Allow the target to customize the info structure. */
2233 disassemble_init_for_target (& disasm_info);
2235 /* Pre-load the dynamic relocs if we are going
2236 to be dumping them along with the disassembly. */
2237 if (dump_dynamic_reloc_info)
2239 long relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2242 bfd_fatal (bfd_get_filename (abfd));
2246 aux.dynrelbuf = (arelent **) xmalloc (relsize);
2247 aux.dynrelcount = bfd_canonicalize_dynamic_reloc (abfd,
2250 if (aux.dynrelcount < 0)
2251 bfd_fatal (bfd_get_filename (abfd));
2253 /* Sort the relocs by address. */
2254 qsort (aux.dynrelbuf, aux.dynrelcount, sizeof (arelent *),
2258 disasm_info.symtab = sorted_syms;
2259 disasm_info.symtab_size = sorted_symcount;
2261 bfd_map_over_sections (abfd, disassemble_section, & disasm_info);
2263 if (aux.dynrelbuf != NULL)
2264 free (aux.dynrelbuf);
2269 load_specific_debug_section (enum dwarf_section_display_enum debug,
2270 asection *sec, void *file)
2272 struct dwarf_section *section = &debug_displays [debug].section;
2273 bfd *abfd = (bfd *) file;
2276 /* If it is already loaded, do nothing. */
2277 if (section->start != NULL)
2280 section->address = bfd_get_section_vma (abfd, sec);
2281 section->size = bfd_get_section_size (sec);
2282 section->start = NULL;
2283 section->user_data = sec;
2284 ret = bfd_get_full_section_contents (abfd, sec, §ion->start);
2288 free_debug_section (debug);
2289 printf (_("\nCan't get contents for section '%s'.\n"),
2294 if (is_relocatable && debug_displays [debug].relocate)
2296 bfd_cache_section_contents (sec, section->start);
2298 ret = bfd_simple_get_relocated_section_contents (abfd,
2305 free_debug_section (debug);
2306 printf (_("\nCan't get contents for section '%s'.\n"),
2316 load_debug_section (enum dwarf_section_display_enum debug, void *file)
2318 struct dwarf_section *section = &debug_displays [debug].section;
2319 bfd *abfd = (bfd *) file;
2322 /* If it is already loaded, do nothing. */
2323 if (section->start != NULL)
2326 /* Locate the debug section. */
2327 sec = bfd_get_section_by_name (abfd, section->uncompressed_name);
2329 section->name = section->uncompressed_name;
2332 sec = bfd_get_section_by_name (abfd, section->compressed_name);
2334 section->name = section->compressed_name;
2339 return load_specific_debug_section (debug, sec, file);
2343 free_debug_section (enum dwarf_section_display_enum debug)
2345 struct dwarf_section *section = &debug_displays [debug].section;
2347 if (section->start == NULL)
2350 /* PR 17512: file: 0f67f69d. */
2351 if (section->user_data != NULL)
2353 asection * sec = (asection *) section->user_data;
2355 /* If we are freeing contents that are also pointed to by the BFD
2356 library's section structure then make sure to update those pointers
2357 too. Otherwise, the next time we try to load data for this section
2358 we can end up using a stale pointer. */
2359 if (section->start == sec->contents)
2361 sec->contents = NULL;
2362 sec->flags &= ~ SEC_IN_MEMORY;
2366 free ((char *) section->start);
2367 section->start = NULL;
2368 section->address = 0;
2373 dump_dwarf_section (bfd *abfd, asection *section,
2374 void *arg ATTRIBUTE_UNUSED)
2376 const char *name = bfd_get_section_name (abfd, section);
2380 if (CONST_STRNEQ (name, ".gnu.linkonce.wi."))
2381 match = ".debug_info";
2385 for (i = 0; i < max; i++)
2386 if ((strcmp (debug_displays [i].section.uncompressed_name, match) == 0
2387 || strcmp (debug_displays [i].section.compressed_name, match) == 0)
2388 && debug_displays [i].enabled != NULL
2389 && *debug_displays [i].enabled)
2391 struct dwarf_section *sec = &debug_displays [i].section;
2393 if (strcmp (sec->uncompressed_name, match) == 0)
2394 sec->name = sec->uncompressed_name;
2396 sec->name = sec->compressed_name;
2397 if (load_specific_debug_section ((enum dwarf_section_display_enum) i,
2400 debug_displays [i].display (sec, abfd);
2402 if (i != info && i != abbrev)
2403 free_debug_section ((enum dwarf_section_display_enum) i);
2409 /* Dump the dwarf debugging information. */
2412 dump_dwarf (bfd *abfd)
2414 is_relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2416 eh_addr_size = bfd_arch_bits_per_address (abfd) / 8;
2418 if (bfd_big_endian (abfd))
2419 byte_get = byte_get_big_endian;
2420 else if (bfd_little_endian (abfd))
2421 byte_get = byte_get_little_endian;
2423 /* PR 17512: file: objdump-s-endless-loop.tekhex. */
2425 warn (_("File %s does not contain any dwarf debug information\n"),
2426 bfd_get_filename (abfd));
2430 switch (bfd_get_arch (abfd))
2433 switch (bfd_get_mach (abfd))
2435 case bfd_mach_x86_64:
2436 case bfd_mach_x86_64_intel_syntax:
2437 case bfd_mach_x86_64_nacl:
2438 case bfd_mach_x64_32:
2439 case bfd_mach_x64_32_intel_syntax:
2440 case bfd_mach_x64_32_nacl:
2441 init_dwarf_regnames_x86_64 ();
2445 init_dwarf_regnames_i386 ();
2450 case bfd_arch_aarch64:
2451 init_dwarf_regnames_aarch64();
2458 bfd_map_over_sections (abfd, dump_dwarf_section, NULL);
2460 free_debug_memory ();
2463 /* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
2464 it. Return NULL on failure. */
2467 read_section_stabs (bfd *abfd, const char *sect_name, bfd_size_type *size_ptr)
2473 stabsect = bfd_get_section_by_name (abfd, sect_name);
2474 if (stabsect == NULL)
2476 printf (_("No %s section present\n\n"), sect_name);
2480 size = bfd_section_size (abfd, stabsect);
2481 contents = (char *) xmalloc (size);
2483 if (! bfd_get_section_contents (abfd, stabsect, contents, 0, size))
2485 non_fatal (_("reading %s section of %s failed: %s"),
2486 sect_name, bfd_get_filename (abfd),
2487 bfd_errmsg (bfd_get_error ()));
2498 /* Stabs entries use a 12 byte format:
2499 4 byte string table index
2501 1 byte stab other field
2502 2 byte stab desc field
2504 FIXME: This will have to change for a 64 bit object format. */
2506 #define STRDXOFF (0)
2508 #define OTHEROFF (5)
2511 #define STABSIZE (12)
2513 /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
2514 using string table section STRSECT_NAME (in `strtab'). */
2517 print_section_stabs (bfd *abfd,
2518 const char *stabsect_name,
2519 unsigned *string_offset_ptr)
2522 unsigned file_string_table_offset = 0;
2523 unsigned next_file_string_table_offset = *string_offset_ptr;
2524 bfd_byte *stabp, *stabs_end;
2527 stabs_end = stabp + stab_size;
2529 printf (_("Contents of %s section:\n\n"), stabsect_name);
2530 printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
2532 /* Loop through all symbols and print them.
2534 We start the index at -1 because there is a dummy symbol on
2535 the front of stabs-in-{coff,elf} sections that supplies sizes. */
2536 for (i = -1; stabp <= stabs_end - STABSIZE; stabp += STABSIZE, i++)
2540 unsigned char type, other;
2541 unsigned short desc;
2544 strx = bfd_h_get_32 (abfd, stabp + STRDXOFF);
2545 type = bfd_h_get_8 (abfd, stabp + TYPEOFF);
2546 other = bfd_h_get_8 (abfd, stabp + OTHEROFF);
2547 desc = bfd_h_get_16 (abfd, stabp + DESCOFF);
2548 value = bfd_h_get_32 (abfd, stabp + VALOFF);
2550 printf ("\n%-6d ", i);
2551 /* Either print the stab name, or, if unnamed, print its number
2552 again (makes consistent formatting for tools like awk). */
2553 name = bfd_get_stab_name (type);
2555 printf ("%-6s", name);
2556 else if (type == N_UNDF)
2559 printf ("%-6d", type);
2560 printf (" %-6d %-6d ", other, desc);
2561 bfd_printf_vma (abfd, value);
2562 printf (" %-6lu", strx);
2564 /* Symbols with type == 0 (N_UNDF) specify the length of the
2565 string table associated with this file. We use that info
2566 to know how to relocate the *next* file's string table indices. */
2569 file_string_table_offset = next_file_string_table_offset;
2570 next_file_string_table_offset += value;
2574 bfd_size_type amt = strx + file_string_table_offset;
2576 /* Using the (possibly updated) string table offset, print the
2577 string (if any) associated with this symbol. */
2578 if (amt < stabstr_size)
2579 /* PR 17512: file: 079-79389-0.001:0.1. */
2580 printf (" %.*s", (int)(stabstr_size - amt), strtab + amt);
2586 *string_offset_ptr = next_file_string_table_offset;
2591 const char * section_name;
2592 const char * string_section_name;
2593 unsigned string_offset;
2598 find_stabs_section (bfd *abfd, asection *section, void *names)
2601 stab_section_names * sought = (stab_section_names *) names;
2603 /* Check for section names for which stabsect_name is a prefix, to
2604 handle .stab.N, etc. */
2605 len = strlen (sought->section_name);
2607 /* If the prefix matches, and the files section name ends with a
2608 nul or a digit, then we match. I.e., we want either an exact
2609 match or a section followed by a number. */
2610 if (strncmp (sought->section_name, section->name, len) == 0
2611 && (section->name[len] == 0
2612 || (section->name[len] == '.' && ISDIGIT (section->name[len + 1]))))
2615 strtab = read_section_stabs (abfd, sought->string_section_name,
2620 stabs = (bfd_byte *) read_section_stabs (abfd, section->name,
2623 print_section_stabs (abfd, section->name, &sought->string_offset);
2629 dump_stabs_section (bfd *abfd, char *stabsect_name, char *strsect_name)
2631 stab_section_names s;
2633 s.section_name = stabsect_name;
2634 s.string_section_name = strsect_name;
2635 s.string_offset = 0;
2637 bfd_map_over_sections (abfd, find_stabs_section, & s);
2643 /* Dump the any sections containing stabs debugging information. */
2646 dump_stabs (bfd *abfd)
2648 dump_stabs_section (abfd, ".stab", ".stabstr");
2649 dump_stabs_section (abfd, ".stab.excl", ".stab.exclstr");
2650 dump_stabs_section (abfd, ".stab.index", ".stab.indexstr");
2653 dump_stabs_section (abfd, "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr");
2655 dump_stabs_section (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
2659 dump_bfd_header (bfd *abfd)
2663 printf (_("architecture: %s, "),
2664 bfd_printable_arch_mach (bfd_get_arch (abfd),
2665 bfd_get_mach (abfd)));
2666 printf (_("flags 0x%08x:\n"), abfd->flags & ~BFD_FLAGS_FOR_BFD_USE_MASK);
2668 #define PF(x, y) if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
2669 PF (HAS_RELOC, "HAS_RELOC");
2670 PF (EXEC_P, "EXEC_P");
2671 PF (HAS_LINENO, "HAS_LINENO");
2672 PF (HAS_DEBUG, "HAS_DEBUG");
2673 PF (HAS_SYMS, "HAS_SYMS");
2674 PF (HAS_LOCALS, "HAS_LOCALS");
2675 PF (DYNAMIC, "DYNAMIC");
2676 PF (WP_TEXT, "WP_TEXT");
2677 PF (D_PAGED, "D_PAGED");
2678 PF (BFD_IS_RELAXABLE, "BFD_IS_RELAXABLE");
2679 printf (_("\nstart address 0x"));
2680 bfd_printf_vma (abfd, abfd->start_address);
2686 dump_bfd_private_header (bfd *abfd)
2688 bfd_print_private_bfd_data (abfd, stdout);
2692 dump_target_specific (bfd *abfd)
2694 const struct objdump_private_desc * const *desc;
2695 struct objdump_private_option *opt;
2698 /* Find the desc. */
2699 for (desc = objdump_private_vectors; *desc != NULL; desc++)
2700 if ((*desc)->filter (abfd))
2705 non_fatal (_("option -P/--private not supported by this file"));
2709 /* Clear all options. */
2710 for (opt = (*desc)->options; opt->name; opt++)
2711 opt->selected = FALSE;
2713 /* Decode options. */
2714 b = dump_private_options;
2717 e = strchr (b, ',');
2722 for (opt = (*desc)->options; opt->name; opt++)
2723 if (strcmp (opt->name, b) == 0)
2725 opt->selected = TRUE;
2728 if (opt->name == NULL)
2729 non_fatal (_("target specific dump '%s' not supported"), b);
2740 (*desc)->dump (abfd);
2743 /* Display a section in hexadecimal format with associated characters.
2744 Each line prefixed by the zero padded address. */
2747 dump_section (bfd *abfd, asection *section, void *dummy ATTRIBUTE_UNUSED)
2750 bfd_size_type datasize;
2751 bfd_size_type addr_offset;
2752 bfd_size_type start_offset;
2753 bfd_size_type stop_offset;
2754 unsigned int opb = bfd_octets_per_byte (abfd);
2755 /* Bytes per line. */
2756 const int onaline = 16;
2761 if ((section->flags & SEC_HAS_CONTENTS) == 0)
2764 if (! process_section_p (section))
2767 if ((datasize = bfd_section_size (abfd, section)) == 0)
2770 /* Compute the address range to display. */
2771 if (start_address == (bfd_vma) -1
2772 || start_address < section->vma)
2775 start_offset = start_address - section->vma;
2777 if (stop_address == (bfd_vma) -1)
2778 stop_offset = datasize / opb;
2781 if (stop_address < section->vma)
2784 stop_offset = stop_address - section->vma;
2786 if (stop_offset > datasize / opb)
2787 stop_offset = datasize / opb;
2790 if (start_offset >= stop_offset)
2793 printf (_("Contents of section %s:"), section->name);
2794 if (display_file_offsets)
2795 printf (_(" (Starting at file offset: 0x%lx)"),
2796 (unsigned long) (section->filepos + start_offset));
2799 if (!bfd_get_full_section_contents (abfd, section, &data))
2801 non_fatal (_("Reading section failed"));
2807 bfd_sprintf_vma (abfd, buf, start_offset + section->vma);
2808 if (strlen (buf) >= sizeof (buf))
2812 while (buf[count] == '0' && buf[count+1] != '\0')
2814 count = strlen (buf) - count;
2818 bfd_sprintf_vma (abfd, buf, stop_offset + section->vma - 1);
2819 if (strlen (buf) >= sizeof (buf))
2823 while (buf[count] == '0' && buf[count+1] != '\0')
2825 count = strlen (buf) - count;
2829 for (addr_offset = start_offset;
2830 addr_offset < stop_offset; addr_offset += onaline / opb)
2834 bfd_sprintf_vma (abfd, buf, (addr_offset + section->vma));
2835 count = strlen (buf);
2836 if ((size_t) count >= sizeof (buf))
2840 while (count < width)
2845 fputs (buf + count - width, stdout);
2848 for (j = addr_offset * opb;
2849 j < addr_offset * opb + onaline; j++)
2851 if (j < stop_offset * opb)
2852 printf ("%02x", (unsigned) (data[j]));
2860 for (j = addr_offset * opb;
2861 j < addr_offset * opb + onaline; j++)
2863 if (j >= stop_offset * opb)
2866 printf ("%c", ISPRINT (data[j]) ? data[j] : '.');
2873 /* Actually display the various requested regions. */
2876 dump_data (bfd *abfd)
2878 bfd_map_over_sections (abfd, dump_section, NULL);
2881 /* Should perhaps share code and display with nm? */
2884 dump_symbols (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean dynamic)
2893 max_count = dynsymcount;
2894 printf ("DYNAMIC SYMBOL TABLE:\n");
2899 max_count = symcount;
2900 printf ("SYMBOL TABLE:\n");
2904 printf (_("no symbols\n"));
2906 for (count = 0; count < max_count; count++)
2910 if (*current == NULL)
2911 printf (_("no information for symbol number %ld\n"), count);
2913 else if ((cur_bfd = bfd_asymbol_bfd (*current)) == NULL)
2914 printf (_("could not determine the type of symbol number %ld\n"),
2917 else if (process_section_p ((* current)->section)
2918 && (dump_special_syms
2919 || !bfd_is_target_special_symbol (cur_bfd, *current)))
2921 const char *name = (*current)->name;
2923 if (do_demangle && name != NULL && *name != '\0')
2927 /* If we want to demangle the name, we demangle it
2928 here, and temporarily clobber it while calling
2929 bfd_print_symbol. FIXME: This is a gross hack. */
2930 alloc = bfd_demangle (cur_bfd, name, DMGL_ANSI | DMGL_PARAMS);
2932 (*current)->name = alloc;
2933 bfd_print_symbol (cur_bfd, stdout, *current,
2934 bfd_print_symbol_all);
2937 (*current)->name = name;
2942 bfd_print_symbol (cur_bfd, stdout, *current,
2943 bfd_print_symbol_all);
2953 dump_reloc_set (bfd *abfd, asection *sec, arelent **relpp, long relcount)
2956 char *last_filename, *last_functionname;
2957 unsigned int last_line;
2958 unsigned int last_discriminator;
2960 /* Get column headers lined up reasonably. */
2968 bfd_sprintf_vma (abfd, buf, (bfd_vma) -1);
2969 width = strlen (buf) - 7;
2971 printf ("OFFSET %*s TYPE %*s VALUE \n", width, "", 12, "");
2974 last_filename = NULL;
2975 last_functionname = NULL;
2977 last_discriminator = 0;
2979 for (p = relpp; relcount && *p != NULL; p++, relcount--)
2982 const char *filename, *functionname;
2983 unsigned int linenumber;
2984 unsigned int discriminator;
2985 const char *sym_name;
2986 const char *section_name;
2987 bfd_vma addend2 = 0;
2989 if (start_address != (bfd_vma) -1
2990 && q->address < start_address)
2992 if (stop_address != (bfd_vma) -1
2993 && q->address > stop_address)
2996 if (with_line_numbers
2998 && bfd_find_nearest_line_discriminator (abfd, sec, syms, q->address,
2999 &filename, &functionname,
3000 &linenumber, &discriminator))
3002 if (functionname != NULL
3003 && (last_functionname == NULL
3004 || strcmp (functionname, last_functionname) != 0))
3006 printf ("%s():\n", functionname);
3007 if (last_functionname != NULL)
3008 free (last_functionname);
3009 last_functionname = xstrdup (functionname);
3013 && (linenumber != last_line
3014 || (filename != NULL
3015 && last_filename != NULL
3016 && filename_cmp (filename, last_filename) != 0)
3017 || (discriminator != last_discriminator)))
3019 if (discriminator > 0)
3020 printf ("%s:%u\n", filename == NULL ? "???" : filename, linenumber);
3022 printf ("%s:%u (discriminator %u)\n", filename == NULL ? "???" : filename,
3023 linenumber, discriminator);
3024 last_line = linenumber;
3025 last_discriminator = discriminator;
3026 if (last_filename != NULL)
3027 free (last_filename);
3028 if (filename == NULL)
3029 last_filename = NULL;
3031 last_filename = xstrdup (filename);
3035 if (q->sym_ptr_ptr && *q->sym_ptr_ptr)
3037 sym_name = (*(q->sym_ptr_ptr))->name;
3038 section_name = (*(q->sym_ptr_ptr))->section->name;
3043 section_name = NULL;
3046 bfd_printf_vma (abfd, q->address);
3047 if (q->howto == NULL)
3048 printf (" *unknown* ");
3049 else if (q->howto->name)
3051 const char *name = q->howto->name;
3053 /* R_SPARC_OLO10 relocations contain two addends.
3054 But because 'arelent' lacks enough storage to
3055 store them both, the 64-bit ELF Sparc backend
3056 records this as two relocations. One R_SPARC_LO10
3057 and one R_SPARC_13, both pointing to the same
3058 address. This is merely so that we have some
3059 place to store both addend fields.
3061 Undo this transformation, otherwise the output
3062 will be confusing. */
3063 if (abfd->xvec->flavour == bfd_target_elf_flavour
3064 && elf_tdata(abfd)->elf_header->e_machine == EM_SPARCV9
3066 && !strcmp (q->howto->name, "R_SPARC_LO10"))
3068 arelent *q2 = *(p + 1);
3071 && q->address == q2->address
3072 && !strcmp (q2->howto->name, "R_SPARC_13"))
3074 name = "R_SPARC_OLO10";
3075 addend2 = q2->addend;
3079 printf (" %-16s ", name);
3082 printf (" %-16d ", q->howto->type);
3086 objdump_print_symname (abfd, NULL, *q->sym_ptr_ptr);
3090 if (section_name == NULL)
3091 section_name = "*unknown*";
3092 printf ("[%s]", section_name);
3097 bfd_signed_vma addend = q->addend;
3105 bfd_printf_vma (abfd, addend);
3110 bfd_printf_vma (abfd, addend2);
3116 if (last_filename != NULL)
3117 free (last_filename);
3118 if (last_functionname != NULL)
3119 free (last_functionname);
3123 dump_relocs_in_section (bfd *abfd,
3125 void *dummy ATTRIBUTE_UNUSED)
3131 if ( bfd_is_abs_section (section)
3132 || bfd_is_und_section (section)
3133 || bfd_is_com_section (section)
3134 || (! process_section_p (section))
3135 || ((section->flags & SEC_RELOC) == 0))
3138 relsize = bfd_get_reloc_upper_bound (abfd, section);
3140 bfd_fatal (bfd_get_filename (abfd));
3142 printf ("RELOCATION RECORDS FOR [%s]:", section->name);
3146 printf (" (none)\n\n");
3150 relpp = (arelent **) xmalloc (relsize);
3151 relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
3156 non_fatal (_("failed to read relocs in: %s"), bfd_get_filename (abfd));
3157 bfd_fatal (_("error message was"));
3159 else if (relcount == 0)
3160 printf (" (none)\n\n");
3164 dump_reloc_set (abfd, section, relpp, relcount);
3171 dump_relocs (bfd *abfd)
3173 bfd_map_over_sections (abfd, dump_relocs_in_section, NULL);
3177 dump_dynamic_relocs (bfd *abfd)
3183 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
3185 bfd_fatal (bfd_get_filename (abfd));
3187 printf ("DYNAMIC RELOCATION RECORDS");
3190 printf (" (none)\n\n");
3193 relpp = (arelent **) xmalloc (relsize);
3194 relcount = bfd_canonicalize_dynamic_reloc (abfd, relpp, dynsyms);
3197 bfd_fatal (bfd_get_filename (abfd));
3198 else if (relcount == 0)
3199 printf (" (none)\n\n");
3203 dump_reloc_set (abfd, NULL, relpp, relcount);
3210 /* Creates a table of paths, to search for source files. */
3213 add_include_path (const char *path)
3217 include_path_count++;
3218 include_paths = (const char **)
3219 xrealloc (include_paths, include_path_count * sizeof (*include_paths));
3220 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3221 if (path[1] == ':' && path[2] == 0)
3222 path = concat (path, ".", (const char *) 0);
3224 include_paths[include_path_count - 1] = path;
3228 adjust_addresses (bfd *abfd ATTRIBUTE_UNUSED,
3232 if ((section->flags & SEC_DEBUGGING) == 0)
3234 bfd_boolean *has_reloc_p = (bfd_boolean *) arg;
3235 section->vma += adjust_section_vma;
3237 section->lma += adjust_section_vma;
3241 /* Dump selected contents of ABFD. */
3244 dump_bfd (bfd *abfd)
3246 /* If we are adjusting section VMA's, change them all now. Changing
3247 the BFD information is a hack. However, we must do it, or
3248 bfd_find_nearest_line will not do the right thing. */
3249 if (adjust_section_vma != 0)
3251 bfd_boolean has_reloc = (abfd->flags & HAS_RELOC);
3252 bfd_map_over_sections (abfd, adjust_addresses, &has_reloc);
3255 if (! dump_debugging_tags && ! suppress_bfd_header)
3256 printf (_("\n%s: file format %s\n"), bfd_get_filename (abfd),
3259 print_arelt_descr (stdout, abfd, TRUE);
3260 if (dump_file_header)
3261 dump_bfd_header (abfd);
3262 if (dump_private_headers)
3263 dump_bfd_private_header (abfd);
3264 if (dump_private_options != NULL)
3265 dump_target_specific (abfd);
3266 if (! dump_debugging_tags && ! suppress_bfd_header)
3273 || dump_dwarf_section_info)
3274 syms = slurp_symtab (abfd);
3276 if (dump_section_headers)
3277 dump_headers (abfd);
3279 if (dump_dynamic_symtab || dump_dynamic_reloc_info
3280 || (disassemble && bfd_get_dynamic_symtab_upper_bound (abfd) > 0))
3281 dynsyms = slurp_dynamic_symtab (abfd);
3284 synthcount = bfd_get_synthetic_symtab (abfd, symcount, syms,
3285 dynsymcount, dynsyms, &synthsyms);
3291 dump_symbols (abfd, FALSE);
3292 if (dump_dynamic_symtab)
3293 dump_symbols (abfd, TRUE);
3294 if (dump_dwarf_section_info)
3296 if (dump_stab_section_info)
3298 if (dump_reloc_info && ! disassemble)
3300 if (dump_dynamic_reloc_info && ! disassemble)
3301 dump_dynamic_relocs (abfd);
3302 if (dump_section_contents)
3305 disassemble_data (abfd);
3311 dhandle = read_debugging_info (abfd, syms, symcount, TRUE);
3312 if (dhandle != NULL)
3314 if (!print_debugging_info (stdout, dhandle, abfd, syms,
3316 dump_debugging_tags ? TRUE : FALSE))
3318 non_fatal (_("%s: printing debugging information failed"),
3319 bfd_get_filename (abfd));
3323 /* PR 6483: If there was no STABS or IEEE debug
3324 info in the file, try DWARF instead. */
3325 else if (! dump_dwarf_section_info)
3327 dwarf_select_sections_all ();
3356 display_object_bfd (bfd *abfd)
3360 if (bfd_check_format_matches (abfd, bfd_object, &matching))
3366 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3368 nonfatal (bfd_get_filename (abfd));
3369 list_matching_formats (matching);
3374 if (bfd_get_error () != bfd_error_file_not_recognized)
3376 nonfatal (bfd_get_filename (abfd));
3380 if (bfd_check_format_matches (abfd, bfd_core, &matching))
3386 nonfatal (bfd_get_filename (abfd));
3388 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3390 list_matching_formats (matching);
3396 display_any_bfd (bfd *file, int level)
3398 /* Decompress sections unless dumping the section contents. */
3399 if (!dump_section_contents)
3400 file->flags |= BFD_DECOMPRESS;
3402 /* If the file is an archive, process all of its elements. */
3403 if (bfd_check_format (file, bfd_archive))
3406 bfd *last_arfile = NULL;
3409 printf (_("In archive %s:\n"), bfd_get_filename (file));
3411 printf (_("In nested archive %s:\n"), bfd_get_filename (file));
3415 bfd_set_error (bfd_error_no_error);
3417 arfile = bfd_openr_next_archived_file (file, arfile);
3420 if (bfd_get_error () != bfd_error_no_more_archived_files)
3421 nonfatal (bfd_get_filename (file));
3425 display_any_bfd (arfile, level + 1);
3427 if (last_arfile != NULL)
3428 bfd_close (last_arfile);
3429 last_arfile = arfile;
3432 if (last_arfile != NULL)
3433 bfd_close (last_arfile);
3436 display_object_bfd (file);
3440 display_file (char *filename, char *target)
3444 if (get_file_size (filename) < 1)
3450 file = bfd_openr (filename, target);
3453 nonfatal (filename);
3457 display_any_bfd (file, 0);
3463 main (int argc, char **argv)
3466 char *target = default_target;
3467 bfd_boolean seenflag = FALSE;
3469 #if defined (HAVE_SETLOCALE)
3470 #if defined (HAVE_LC_MESSAGES)
3471 setlocale (LC_MESSAGES, "");
3473 setlocale (LC_CTYPE, "");
3476 bindtextdomain (PACKAGE, LOCALEDIR);
3477 textdomain (PACKAGE);
3479 program_name = *argv;
3480 xmalloc_set_program_name (program_name);
3482 START_PROGRESS (program_name, 0);
3484 expandargv (&argc, &argv);
3487 set_default_bfd_target ();
3489 while ((c = getopt_long (argc, argv,
3490 "pP:ib:m:M:VvCdDlfFaHhrRtTxsSI:j:wE:zgeGW::",
3491 long_options, (int *) 0))
3497 break; /* We've been given a long option. */
3502 if (disassembler_options)
3503 /* Ignore potential memory leak for now. */
3504 disassembler_options = concat (disassembler_options, ",",
3505 optarg, (const char *) NULL);
3507 disassembler_options = optarg;
3513 display_file_offsets = TRUE;
3516 with_line_numbers = TRUE;
3525 enum demangling_styles style;
3527 style = cplus_demangle_name_to_style (optarg);
3528 if (style == unknown_demangling)
3529 fatal (_("unknown demangling style `%s'"),
3532 cplus_demangle_set_style (style);
3538 case OPTION_ADJUST_VMA:
3539 adjust_section_vma = parse_vma (optarg, "--adjust-vma");
3541 case OPTION_START_ADDRESS:
3542 start_address = parse_vma (optarg, "--start-address");
3543 if ((stop_address != (bfd_vma) -1) && stop_address <= start_address)
3544 fatal (_("error: the start address should be before the end address"));
3546 case OPTION_STOP_ADDRESS:
3547 stop_address = parse_vma (optarg, "--stop-address");
3548 if ((start_address != (bfd_vma) -1) && stop_address <= start_address)
3549 fatal (_("error: the stop address should be after the start address"));
3553 prefix_length = strlen (prefix);
3554 /* Remove an unnecessary trailing '/' */
3555 while (IS_DIR_SEPARATOR (prefix[prefix_length - 1]))
3558 case OPTION_PREFIX_STRIP:
3559 prefix_strip = atoi (optarg);
3560 if (prefix_strip < 0)
3561 fatal (_("error: prefix strip must be non-negative"));
3563 case OPTION_INSN_WIDTH:
3564 insn_width = strtoul (optarg, NULL, 0);
3565 if (insn_width <= 0)
3566 fatal (_("error: instruction width must be positive"));
3569 if (strcmp (optarg, "B") == 0)
3570 endian = BFD_ENDIAN_BIG;
3571 else if (strcmp (optarg, "L") == 0)
3572 endian = BFD_ENDIAN_LITTLE;
3575 nonfatal (_("unrecognized -E option"));
3580 if (strncmp (optarg, "big", strlen (optarg)) == 0)
3581 endian = BFD_ENDIAN_BIG;
3582 else if (strncmp (optarg, "little", strlen (optarg)) == 0)
3583 endian = BFD_ENDIAN_LITTLE;
3586 non_fatal (_("unrecognized --endian type `%s'"), optarg);
3593 dump_file_header = TRUE;
3597 formats_info = TRUE;
3601 add_include_path (optarg);
3604 dump_private_headers = TRUE;
3608 dump_private_options = optarg;
3612 dump_private_headers = TRUE;
3614 dump_reloc_info = TRUE;
3615 dump_file_header = TRUE;
3616 dump_ar_hdrs = TRUE;
3617 dump_section_headers = TRUE;
3625 dump_dynamic_symtab = TRUE;
3633 disassemble_zeroes = TRUE;
3637 disassemble_all = TRUE;
3642 with_source_code = TRUE;
3651 dump_debugging_tags = 1;
3656 dump_dwarf_section_info = TRUE;
3659 dwarf_select_sections_by_letters (optarg);
3661 dwarf_select_sections_all ();
3664 dump_dwarf_section_info = TRUE;
3667 dwarf_select_sections_by_names (optarg);
3669 dwarf_select_sections_all ();
3671 case OPTION_DWARF_DEPTH:
3674 dwarf_cutoff_level = strtoul (optarg, & cp, 0);
3677 case OPTION_DWARF_START:
3680 dwarf_start_die = strtoul (optarg, & cp, 0);
3681 suppress_bfd_header = 1;
3684 case OPTION_DWARF_CHECK:
3688 dump_stab_section_info = TRUE;
3692 dump_section_contents = TRUE;
3696 dump_reloc_info = TRUE;
3700 dump_dynamic_reloc_info = TRUE;
3704 dump_ar_hdrs = TRUE;
3708 dump_section_headers = TRUE;
3713 show_version = TRUE;
3719 /* No need to set seenflag or to break - usage() does not return. */
3726 print_version ("objdump");
3732 exit_status = display_info ();
3736 display_file ("a.out", target);
3738 for (; optind < argc;)
3739 display_file (argv[optind++], target);
3744 END_PROGRESS (program_name);