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 ret = bfd_get_full_section_contents (abfd, sec, §ion->start);
2287 free_debug_section (debug);
2288 printf (_("\nCan't get contents for section '%s'.\n"),
2293 if (is_relocatable && debug_displays [debug].relocate)
2295 bfd_cache_section_contents (sec, section->start);
2297 ret = bfd_simple_get_relocated_section_contents (abfd,
2304 free_debug_section (debug);
2305 printf (_("\nCan't get contents for section '%s'.\n"),
2315 load_debug_section (enum dwarf_section_display_enum debug, void *file)
2317 struct dwarf_section *section = &debug_displays [debug].section;
2318 bfd *abfd = (bfd *) file;
2321 /* If it is already loaded, do nothing. */
2322 if (section->start != NULL)
2325 /* Locate the debug section. */
2326 sec = bfd_get_section_by_name (abfd, section->uncompressed_name);
2328 section->name = section->uncompressed_name;
2331 sec = bfd_get_section_by_name (abfd, section->compressed_name);
2333 section->name = section->compressed_name;
2338 return load_specific_debug_section (debug, sec, file);
2342 free_debug_section (enum dwarf_section_display_enum debug)
2344 struct dwarf_section *section = &debug_displays [debug].section;
2346 if (section->start == NULL)
2349 free ((char *) section->start);
2350 section->start = NULL;
2351 section->address = 0;
2356 dump_dwarf_section (bfd *abfd, asection *section,
2357 void *arg ATTRIBUTE_UNUSED)
2359 const char *name = bfd_get_section_name (abfd, section);
2363 if (CONST_STRNEQ (name, ".gnu.linkonce.wi."))
2364 match = ".debug_info";
2368 for (i = 0; i < max; i++)
2369 if ((strcmp (debug_displays [i].section.uncompressed_name, match) == 0
2370 || strcmp (debug_displays [i].section.compressed_name, match) == 0)
2371 && debug_displays [i].enabled != NULL
2372 && *debug_displays [i].enabled)
2374 struct dwarf_section *sec = &debug_displays [i].section;
2376 if (strcmp (sec->uncompressed_name, match) == 0)
2377 sec->name = sec->uncompressed_name;
2379 sec->name = sec->compressed_name;
2380 if (load_specific_debug_section ((enum dwarf_section_display_enum) i,
2383 debug_displays [i].display (sec, abfd);
2385 if (i != info && i != abbrev)
2386 free_debug_section ((enum dwarf_section_display_enum) i);
2392 /* Dump the dwarf debugging information. */
2395 dump_dwarf (bfd *abfd)
2397 is_relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2399 eh_addr_size = bfd_arch_bits_per_address (abfd) / 8;
2401 if (bfd_big_endian (abfd))
2402 byte_get = byte_get_big_endian;
2403 else if (bfd_little_endian (abfd))
2404 byte_get = byte_get_little_endian;
2406 /* PR 17512: file: objdump-s-endless-loop.tekhex. */
2408 warn (_("File %s does not contain any dwarf debug information\n"),
2409 bfd_get_filename (abfd));
2413 switch (bfd_get_arch (abfd))
2416 switch (bfd_get_mach (abfd))
2418 case bfd_mach_x86_64:
2419 case bfd_mach_x86_64_intel_syntax:
2420 case bfd_mach_x86_64_nacl:
2421 case bfd_mach_x64_32:
2422 case bfd_mach_x64_32_intel_syntax:
2423 case bfd_mach_x64_32_nacl:
2424 init_dwarf_regnames_x86_64 ();
2428 init_dwarf_regnames_i386 ();
2433 case bfd_arch_aarch64:
2434 init_dwarf_regnames_aarch64();
2441 bfd_map_over_sections (abfd, dump_dwarf_section, NULL);
2443 free_debug_memory ();
2446 /* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
2447 it. Return NULL on failure. */
2450 read_section_stabs (bfd *abfd, const char *sect_name, bfd_size_type *size_ptr)
2456 stabsect = bfd_get_section_by_name (abfd, sect_name);
2457 if (stabsect == NULL)
2459 printf (_("No %s section present\n\n"), sect_name);
2463 size = bfd_section_size (abfd, stabsect);
2464 contents = (char *) xmalloc (size);
2466 if (! bfd_get_section_contents (abfd, stabsect, contents, 0, size))
2468 non_fatal (_("reading %s section of %s failed: %s"),
2469 sect_name, bfd_get_filename (abfd),
2470 bfd_errmsg (bfd_get_error ()));
2481 /* Stabs entries use a 12 byte format:
2482 4 byte string table index
2484 1 byte stab other field
2485 2 byte stab desc field
2487 FIXME: This will have to change for a 64 bit object format. */
2489 #define STRDXOFF (0)
2491 #define OTHEROFF (5)
2494 #define STABSIZE (12)
2496 /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
2497 using string table section STRSECT_NAME (in `strtab'). */
2500 print_section_stabs (bfd *abfd,
2501 const char *stabsect_name,
2502 unsigned *string_offset_ptr)
2505 unsigned file_string_table_offset = 0;
2506 unsigned next_file_string_table_offset = *string_offset_ptr;
2507 bfd_byte *stabp, *stabs_end;
2510 stabs_end = stabp + stab_size;
2512 printf (_("Contents of %s section:\n\n"), stabsect_name);
2513 printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
2515 /* Loop through all symbols and print them.
2517 We start the index at -1 because there is a dummy symbol on
2518 the front of stabs-in-{coff,elf} sections that supplies sizes. */
2519 for (i = -1; stabp <= stabs_end - STABSIZE; stabp += STABSIZE, i++)
2523 unsigned char type, other;
2524 unsigned short desc;
2527 strx = bfd_h_get_32 (abfd, stabp + STRDXOFF);
2528 type = bfd_h_get_8 (abfd, stabp + TYPEOFF);
2529 other = bfd_h_get_8 (abfd, stabp + OTHEROFF);
2530 desc = bfd_h_get_16 (abfd, stabp + DESCOFF);
2531 value = bfd_h_get_32 (abfd, stabp + VALOFF);
2533 printf ("\n%-6d ", i);
2534 /* Either print the stab name, or, if unnamed, print its number
2535 again (makes consistent formatting for tools like awk). */
2536 name = bfd_get_stab_name (type);
2538 printf ("%-6s", name);
2539 else if (type == N_UNDF)
2542 printf ("%-6d", type);
2543 printf (" %-6d %-6d ", other, desc);
2544 bfd_printf_vma (abfd, value);
2545 printf (" %-6lu", strx);
2547 /* Symbols with type == 0 (N_UNDF) specify the length of the
2548 string table associated with this file. We use that info
2549 to know how to relocate the *next* file's string table indices. */
2552 file_string_table_offset = next_file_string_table_offset;
2553 next_file_string_table_offset += value;
2557 bfd_size_type amt = strx + file_string_table_offset;
2559 /* Using the (possibly updated) string table offset, print the
2560 string (if any) associated with this symbol. */
2561 if (amt < stabstr_size)
2562 /* PR 17512: file: 079-79389-0.001:0.1. */
2563 printf (" %.*s", (int)(stabstr_size - amt), strtab + amt);
2569 *string_offset_ptr = next_file_string_table_offset;
2574 const char * section_name;
2575 const char * string_section_name;
2576 unsigned string_offset;
2581 find_stabs_section (bfd *abfd, asection *section, void *names)
2584 stab_section_names * sought = (stab_section_names *) names;
2586 /* Check for section names for which stabsect_name is a prefix, to
2587 handle .stab.N, etc. */
2588 len = strlen (sought->section_name);
2590 /* If the prefix matches, and the files section name ends with a
2591 nul or a digit, then we match. I.e., we want either an exact
2592 match or a section followed by a number. */
2593 if (strncmp (sought->section_name, section->name, len) == 0
2594 && (section->name[len] == 0
2595 || (section->name[len] == '.' && ISDIGIT (section->name[len + 1]))))
2598 strtab = read_section_stabs (abfd, sought->string_section_name,
2603 stabs = (bfd_byte *) read_section_stabs (abfd, section->name,
2606 print_section_stabs (abfd, section->name, &sought->string_offset);
2612 dump_stabs_section (bfd *abfd, char *stabsect_name, char *strsect_name)
2614 stab_section_names s;
2616 s.section_name = stabsect_name;
2617 s.string_section_name = strsect_name;
2618 s.string_offset = 0;
2620 bfd_map_over_sections (abfd, find_stabs_section, & s);
2626 /* Dump the any sections containing stabs debugging information. */
2629 dump_stabs (bfd *abfd)
2631 dump_stabs_section (abfd, ".stab", ".stabstr");
2632 dump_stabs_section (abfd, ".stab.excl", ".stab.exclstr");
2633 dump_stabs_section (abfd, ".stab.index", ".stab.indexstr");
2636 dump_stabs_section (abfd, "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr");
2638 dump_stabs_section (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
2642 dump_bfd_header (bfd *abfd)
2646 printf (_("architecture: %s, "),
2647 bfd_printable_arch_mach (bfd_get_arch (abfd),
2648 bfd_get_mach (abfd)));
2649 printf (_("flags 0x%08x:\n"), abfd->flags & ~BFD_FLAGS_FOR_BFD_USE_MASK);
2651 #define PF(x, y) if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
2652 PF (HAS_RELOC, "HAS_RELOC");
2653 PF (EXEC_P, "EXEC_P");
2654 PF (HAS_LINENO, "HAS_LINENO");
2655 PF (HAS_DEBUG, "HAS_DEBUG");
2656 PF (HAS_SYMS, "HAS_SYMS");
2657 PF (HAS_LOCALS, "HAS_LOCALS");
2658 PF (DYNAMIC, "DYNAMIC");
2659 PF (WP_TEXT, "WP_TEXT");
2660 PF (D_PAGED, "D_PAGED");
2661 PF (BFD_IS_RELAXABLE, "BFD_IS_RELAXABLE");
2662 printf (_("\nstart address 0x"));
2663 bfd_printf_vma (abfd, abfd->start_address);
2669 dump_bfd_private_header (bfd *abfd)
2671 bfd_print_private_bfd_data (abfd, stdout);
2675 dump_target_specific (bfd *abfd)
2677 const struct objdump_private_desc * const *desc;
2678 struct objdump_private_option *opt;
2681 /* Find the desc. */
2682 for (desc = objdump_private_vectors; *desc != NULL; desc++)
2683 if ((*desc)->filter (abfd))
2688 non_fatal (_("option -P/--private not supported by this file"));
2692 /* Clear all options. */
2693 for (opt = (*desc)->options; opt->name; opt++)
2694 opt->selected = FALSE;
2696 /* Decode options. */
2697 b = dump_private_options;
2700 e = strchr (b, ',');
2705 for (opt = (*desc)->options; opt->name; opt++)
2706 if (strcmp (opt->name, b) == 0)
2708 opt->selected = TRUE;
2711 if (opt->name == NULL)
2712 non_fatal (_("target specific dump '%s' not supported"), b);
2723 (*desc)->dump (abfd);
2726 /* Display a section in hexadecimal format with associated characters.
2727 Each line prefixed by the zero padded address. */
2730 dump_section (bfd *abfd, asection *section, void *dummy ATTRIBUTE_UNUSED)
2733 bfd_size_type datasize;
2734 bfd_size_type addr_offset;
2735 bfd_size_type start_offset;
2736 bfd_size_type stop_offset;
2737 unsigned int opb = bfd_octets_per_byte (abfd);
2738 /* Bytes per line. */
2739 const int onaline = 16;
2744 if ((section->flags & SEC_HAS_CONTENTS) == 0)
2747 if (! process_section_p (section))
2750 if ((datasize = bfd_section_size (abfd, section)) == 0)
2753 /* Compute the address range to display. */
2754 if (start_address == (bfd_vma) -1
2755 || start_address < section->vma)
2758 start_offset = start_address - section->vma;
2760 if (stop_address == (bfd_vma) -1)
2761 stop_offset = datasize / opb;
2764 if (stop_address < section->vma)
2767 stop_offset = stop_address - section->vma;
2769 if (stop_offset > datasize / opb)
2770 stop_offset = datasize / opb;
2773 if (start_offset >= stop_offset)
2776 printf (_("Contents of section %s:"), section->name);
2777 if (display_file_offsets)
2778 printf (_(" (Starting at file offset: 0x%lx)"),
2779 (unsigned long) (section->filepos + start_offset));
2782 if (!bfd_get_full_section_contents (abfd, section, &data))
2784 non_fatal (_("Reading section failed"));
2790 bfd_sprintf_vma (abfd, buf, start_offset + section->vma);
2791 if (strlen (buf) >= sizeof (buf))
2795 while (buf[count] == '0' && buf[count+1] != '\0')
2797 count = strlen (buf) - count;
2801 bfd_sprintf_vma (abfd, buf, stop_offset + section->vma - 1);
2802 if (strlen (buf) >= sizeof (buf))
2806 while (buf[count] == '0' && buf[count+1] != '\0')
2808 count = strlen (buf) - count;
2812 for (addr_offset = start_offset;
2813 addr_offset < stop_offset; addr_offset += onaline / opb)
2817 bfd_sprintf_vma (abfd, buf, (addr_offset + section->vma));
2818 count = strlen (buf);
2819 if ((size_t) count >= sizeof (buf))
2823 while (count < width)
2828 fputs (buf + count - width, stdout);
2831 for (j = addr_offset * opb;
2832 j < addr_offset * opb + onaline; j++)
2834 if (j < stop_offset * opb)
2835 printf ("%02x", (unsigned) (data[j]));
2843 for (j = addr_offset * opb;
2844 j < addr_offset * opb + onaline; j++)
2846 if (j >= stop_offset * opb)
2849 printf ("%c", ISPRINT (data[j]) ? data[j] : '.');
2856 /* Actually display the various requested regions. */
2859 dump_data (bfd *abfd)
2861 bfd_map_over_sections (abfd, dump_section, NULL);
2864 /* Should perhaps share code and display with nm? */
2867 dump_symbols (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean dynamic)
2876 max_count = dynsymcount;
2877 printf ("DYNAMIC SYMBOL TABLE:\n");
2882 max_count = symcount;
2883 printf ("SYMBOL TABLE:\n");
2887 printf (_("no symbols\n"));
2889 for (count = 0; count < max_count; count++)
2893 if (*current == NULL)
2894 printf (_("no information for symbol number %ld\n"), count);
2896 else if ((cur_bfd = bfd_asymbol_bfd (*current)) == NULL)
2897 printf (_("could not determine the type of symbol number %ld\n"),
2900 else if (process_section_p ((* current)->section)
2901 && (dump_special_syms
2902 || !bfd_is_target_special_symbol (cur_bfd, *current)))
2904 const char *name = (*current)->name;
2906 if (do_demangle && name != NULL && *name != '\0')
2910 /* If we want to demangle the name, we demangle it
2911 here, and temporarily clobber it while calling
2912 bfd_print_symbol. FIXME: This is a gross hack. */
2913 alloc = bfd_demangle (cur_bfd, name, DMGL_ANSI | DMGL_PARAMS);
2915 (*current)->name = alloc;
2916 bfd_print_symbol (cur_bfd, stdout, *current,
2917 bfd_print_symbol_all);
2920 (*current)->name = name;
2925 bfd_print_symbol (cur_bfd, stdout, *current,
2926 bfd_print_symbol_all);
2936 dump_reloc_set (bfd *abfd, asection *sec, arelent **relpp, long relcount)
2939 char *last_filename, *last_functionname;
2940 unsigned int last_line;
2941 unsigned int last_discriminator;
2943 /* Get column headers lined up reasonably. */
2951 bfd_sprintf_vma (abfd, buf, (bfd_vma) -1);
2952 width = strlen (buf) - 7;
2954 printf ("OFFSET %*s TYPE %*s VALUE \n", width, "", 12, "");
2957 last_filename = NULL;
2958 last_functionname = NULL;
2960 last_discriminator = 0;
2962 for (p = relpp; relcount && *p != NULL; p++, relcount--)
2965 const char *filename, *functionname;
2966 unsigned int linenumber;
2967 unsigned int discriminator;
2968 const char *sym_name;
2969 const char *section_name;
2970 bfd_vma addend2 = 0;
2972 if (start_address != (bfd_vma) -1
2973 && q->address < start_address)
2975 if (stop_address != (bfd_vma) -1
2976 && q->address > stop_address)
2979 if (with_line_numbers
2981 && bfd_find_nearest_line_discriminator (abfd, sec, syms, q->address,
2982 &filename, &functionname,
2983 &linenumber, &discriminator))
2985 if (functionname != NULL
2986 && (last_functionname == NULL
2987 || strcmp (functionname, last_functionname) != 0))
2989 printf ("%s():\n", functionname);
2990 if (last_functionname != NULL)
2991 free (last_functionname);
2992 last_functionname = xstrdup (functionname);
2996 && (linenumber != last_line
2997 || (filename != NULL
2998 && last_filename != NULL
2999 && filename_cmp (filename, last_filename) != 0)
3000 || (discriminator != last_discriminator)))
3002 if (discriminator > 0)
3003 printf ("%s:%u\n", filename == NULL ? "???" : filename, linenumber);
3005 printf ("%s:%u (discriminator %u)\n", filename == NULL ? "???" : filename,
3006 linenumber, discriminator);
3007 last_line = linenumber;
3008 last_discriminator = discriminator;
3009 if (last_filename != NULL)
3010 free (last_filename);
3011 if (filename == NULL)
3012 last_filename = NULL;
3014 last_filename = xstrdup (filename);
3018 if (q->sym_ptr_ptr && *q->sym_ptr_ptr)
3020 sym_name = (*(q->sym_ptr_ptr))->name;
3021 section_name = (*(q->sym_ptr_ptr))->section->name;
3026 section_name = NULL;
3029 bfd_printf_vma (abfd, q->address);
3030 if (q->howto == NULL)
3031 printf (" *unknown* ");
3032 else if (q->howto->name)
3034 const char *name = q->howto->name;
3036 /* R_SPARC_OLO10 relocations contain two addends.
3037 But because 'arelent' lacks enough storage to
3038 store them both, the 64-bit ELF Sparc backend
3039 records this as two relocations. One R_SPARC_LO10
3040 and one R_SPARC_13, both pointing to the same
3041 address. This is merely so that we have some
3042 place to store both addend fields.
3044 Undo this transformation, otherwise the output
3045 will be confusing. */
3046 if (abfd->xvec->flavour == bfd_target_elf_flavour
3047 && elf_tdata(abfd)->elf_header->e_machine == EM_SPARCV9
3049 && !strcmp (q->howto->name, "R_SPARC_LO10"))
3051 arelent *q2 = *(p + 1);
3054 && q->address == q2->address
3055 && !strcmp (q2->howto->name, "R_SPARC_13"))
3057 name = "R_SPARC_OLO10";
3058 addend2 = q2->addend;
3062 printf (" %-16s ", name);
3065 printf (" %-16d ", q->howto->type);
3069 objdump_print_symname (abfd, NULL, *q->sym_ptr_ptr);
3073 if (section_name == NULL)
3074 section_name = "*unknown*";
3075 printf ("[%s]", section_name);
3080 bfd_signed_vma addend = q->addend;
3088 bfd_printf_vma (abfd, addend);
3093 bfd_printf_vma (abfd, addend2);
3099 if (last_filename != NULL)
3100 free (last_filename);
3101 if (last_functionname != NULL)
3102 free (last_functionname);
3106 dump_relocs_in_section (bfd *abfd,
3108 void *dummy ATTRIBUTE_UNUSED)
3114 if ( bfd_is_abs_section (section)
3115 || bfd_is_und_section (section)
3116 || bfd_is_com_section (section)
3117 || (! process_section_p (section))
3118 || ((section->flags & SEC_RELOC) == 0))
3121 relsize = bfd_get_reloc_upper_bound (abfd, section);
3123 bfd_fatal (bfd_get_filename (abfd));
3125 printf ("RELOCATION RECORDS FOR [%s]:", section->name);
3129 printf (" (none)\n\n");
3133 relpp = (arelent **) xmalloc (relsize);
3134 relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
3139 non_fatal (_("failed to read relocs in: %s"), bfd_get_filename (abfd));
3140 bfd_fatal (_("error message was"));
3142 else if (relcount == 0)
3143 printf (" (none)\n\n");
3147 dump_reloc_set (abfd, section, relpp, relcount);
3154 dump_relocs (bfd *abfd)
3156 bfd_map_over_sections (abfd, dump_relocs_in_section, NULL);
3160 dump_dynamic_relocs (bfd *abfd)
3166 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
3168 bfd_fatal (bfd_get_filename (abfd));
3170 printf ("DYNAMIC RELOCATION RECORDS");
3173 printf (" (none)\n\n");
3176 relpp = (arelent **) xmalloc (relsize);
3177 relcount = bfd_canonicalize_dynamic_reloc (abfd, relpp, dynsyms);
3180 bfd_fatal (bfd_get_filename (abfd));
3181 else if (relcount == 0)
3182 printf (" (none)\n\n");
3186 dump_reloc_set (abfd, NULL, relpp, relcount);
3193 /* Creates a table of paths, to search for source files. */
3196 add_include_path (const char *path)
3200 include_path_count++;
3201 include_paths = (const char **)
3202 xrealloc (include_paths, include_path_count * sizeof (*include_paths));
3203 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3204 if (path[1] == ':' && path[2] == 0)
3205 path = concat (path, ".", (const char *) 0);
3207 include_paths[include_path_count - 1] = path;
3211 adjust_addresses (bfd *abfd ATTRIBUTE_UNUSED,
3215 if ((section->flags & SEC_DEBUGGING) == 0)
3217 bfd_boolean *has_reloc_p = (bfd_boolean *) arg;
3218 section->vma += adjust_section_vma;
3220 section->lma += adjust_section_vma;
3224 /* Dump selected contents of ABFD. */
3227 dump_bfd (bfd *abfd)
3229 /* If we are adjusting section VMA's, change them all now. Changing
3230 the BFD information is a hack. However, we must do it, or
3231 bfd_find_nearest_line will not do the right thing. */
3232 if (adjust_section_vma != 0)
3234 bfd_boolean has_reloc = (abfd->flags & HAS_RELOC);
3235 bfd_map_over_sections (abfd, adjust_addresses, &has_reloc);
3238 if (! dump_debugging_tags && ! suppress_bfd_header)
3239 printf (_("\n%s: file format %s\n"), bfd_get_filename (abfd),
3242 print_arelt_descr (stdout, abfd, TRUE);
3243 if (dump_file_header)
3244 dump_bfd_header (abfd);
3245 if (dump_private_headers)
3246 dump_bfd_private_header (abfd);
3247 if (dump_private_options != NULL)
3248 dump_target_specific (abfd);
3249 if (! dump_debugging_tags && ! suppress_bfd_header)
3256 || dump_dwarf_section_info)
3257 syms = slurp_symtab (abfd);
3259 if (dump_section_headers)
3260 dump_headers (abfd);
3262 if (dump_dynamic_symtab || dump_dynamic_reloc_info
3263 || (disassemble && bfd_get_dynamic_symtab_upper_bound (abfd) > 0))
3264 dynsyms = slurp_dynamic_symtab (abfd);
3267 synthcount = bfd_get_synthetic_symtab (abfd, symcount, syms,
3268 dynsymcount, dynsyms, &synthsyms);
3274 dump_symbols (abfd, FALSE);
3275 if (dump_dynamic_symtab)
3276 dump_symbols (abfd, TRUE);
3277 if (dump_dwarf_section_info)
3279 if (dump_stab_section_info)
3281 if (dump_reloc_info && ! disassemble)
3283 if (dump_dynamic_reloc_info && ! disassemble)
3284 dump_dynamic_relocs (abfd);
3285 if (dump_section_contents)
3288 disassemble_data (abfd);
3294 dhandle = read_debugging_info (abfd, syms, symcount, TRUE);
3295 if (dhandle != NULL)
3297 if (!print_debugging_info (stdout, dhandle, abfd, syms,
3299 dump_debugging_tags ? TRUE : FALSE))
3301 non_fatal (_("%s: printing debugging information failed"),
3302 bfd_get_filename (abfd));
3306 /* PR 6483: If there was no STABS or IEEE debug
3307 info in the file, try DWARF instead. */
3308 else if (! dump_dwarf_section_info)
3310 dwarf_select_sections_all ();
3339 display_object_bfd (bfd *abfd)
3343 if (bfd_check_format_matches (abfd, bfd_object, &matching))
3349 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3351 nonfatal (bfd_get_filename (abfd));
3352 list_matching_formats (matching);
3357 if (bfd_get_error () != bfd_error_file_not_recognized)
3359 nonfatal (bfd_get_filename (abfd));
3363 if (bfd_check_format_matches (abfd, bfd_core, &matching))
3369 nonfatal (bfd_get_filename (abfd));
3371 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3373 list_matching_formats (matching);
3379 display_any_bfd (bfd *file, int level)
3381 /* Decompress sections unless dumping the section contents. */
3382 if (!dump_section_contents)
3383 file->flags |= BFD_DECOMPRESS;
3385 /* If the file is an archive, process all of its elements. */
3386 if (bfd_check_format (file, bfd_archive))
3389 bfd *last_arfile = NULL;
3392 printf (_("In archive %s:\n"), bfd_get_filename (file));
3394 printf (_("In nested archive %s:\n"), bfd_get_filename (file));
3398 bfd_set_error (bfd_error_no_error);
3400 arfile = bfd_openr_next_archived_file (file, arfile);
3403 if (bfd_get_error () != bfd_error_no_more_archived_files)
3404 nonfatal (bfd_get_filename (file));
3408 display_any_bfd (arfile, level + 1);
3410 if (last_arfile != NULL)
3411 bfd_close (last_arfile);
3412 last_arfile = arfile;
3415 if (last_arfile != NULL)
3416 bfd_close (last_arfile);
3419 display_object_bfd (file);
3423 display_file (char *filename, char *target)
3427 if (get_file_size (filename) < 1)
3433 file = bfd_openr (filename, target);
3436 nonfatal (filename);
3440 display_any_bfd (file, 0);
3446 main (int argc, char **argv)
3449 char *target = default_target;
3450 bfd_boolean seenflag = FALSE;
3452 #if defined (HAVE_SETLOCALE)
3453 #if defined (HAVE_LC_MESSAGES)
3454 setlocale (LC_MESSAGES, "");
3456 setlocale (LC_CTYPE, "");
3459 bindtextdomain (PACKAGE, LOCALEDIR);
3460 textdomain (PACKAGE);
3462 program_name = *argv;
3463 xmalloc_set_program_name (program_name);
3465 START_PROGRESS (program_name, 0);
3467 expandargv (&argc, &argv);
3470 set_default_bfd_target ();
3472 while ((c = getopt_long (argc, argv,
3473 "pP:ib:m:M:VvCdDlfFaHhrRtTxsSI:j:wE:zgeGW::",
3474 long_options, (int *) 0))
3480 break; /* We've been given a long option. */
3485 if (disassembler_options)
3486 /* Ignore potential memory leak for now. */
3487 disassembler_options = concat (disassembler_options, ",",
3488 optarg, (const char *) NULL);
3490 disassembler_options = optarg;
3496 display_file_offsets = TRUE;
3499 with_line_numbers = TRUE;
3508 enum demangling_styles style;
3510 style = cplus_demangle_name_to_style (optarg);
3511 if (style == unknown_demangling)
3512 fatal (_("unknown demangling style `%s'"),
3515 cplus_demangle_set_style (style);
3521 case OPTION_ADJUST_VMA:
3522 adjust_section_vma = parse_vma (optarg, "--adjust-vma");
3524 case OPTION_START_ADDRESS:
3525 start_address = parse_vma (optarg, "--start-address");
3526 if ((stop_address != (bfd_vma) -1) && stop_address <= start_address)
3527 fatal (_("error: the start address should be before the end address"));
3529 case OPTION_STOP_ADDRESS:
3530 stop_address = parse_vma (optarg, "--stop-address");
3531 if ((start_address != (bfd_vma) -1) && stop_address <= start_address)
3532 fatal (_("error: the stop address should be after the start address"));
3536 prefix_length = strlen (prefix);
3537 /* Remove an unnecessary trailing '/' */
3538 while (IS_DIR_SEPARATOR (prefix[prefix_length - 1]))
3541 case OPTION_PREFIX_STRIP:
3542 prefix_strip = atoi (optarg);
3543 if (prefix_strip < 0)
3544 fatal (_("error: prefix strip must be non-negative"));
3546 case OPTION_INSN_WIDTH:
3547 insn_width = strtoul (optarg, NULL, 0);
3548 if (insn_width <= 0)
3549 fatal (_("error: instruction width must be positive"));
3552 if (strcmp (optarg, "B") == 0)
3553 endian = BFD_ENDIAN_BIG;
3554 else if (strcmp (optarg, "L") == 0)
3555 endian = BFD_ENDIAN_LITTLE;
3558 nonfatal (_("unrecognized -E option"));
3563 if (strncmp (optarg, "big", strlen (optarg)) == 0)
3564 endian = BFD_ENDIAN_BIG;
3565 else if (strncmp (optarg, "little", strlen (optarg)) == 0)
3566 endian = BFD_ENDIAN_LITTLE;
3569 non_fatal (_("unrecognized --endian type `%s'"), optarg);
3576 dump_file_header = TRUE;
3580 formats_info = TRUE;
3584 add_include_path (optarg);
3587 dump_private_headers = TRUE;
3591 dump_private_options = optarg;
3595 dump_private_headers = TRUE;
3597 dump_reloc_info = TRUE;
3598 dump_file_header = TRUE;
3599 dump_ar_hdrs = TRUE;
3600 dump_section_headers = TRUE;
3608 dump_dynamic_symtab = TRUE;
3616 disassemble_zeroes = TRUE;
3620 disassemble_all = TRUE;
3625 with_source_code = TRUE;
3634 dump_debugging_tags = 1;
3639 dump_dwarf_section_info = TRUE;
3642 dwarf_select_sections_by_letters (optarg);
3644 dwarf_select_sections_all ();
3647 dump_dwarf_section_info = TRUE;
3650 dwarf_select_sections_by_names (optarg);
3652 dwarf_select_sections_all ();
3654 case OPTION_DWARF_DEPTH:
3657 dwarf_cutoff_level = strtoul (optarg, & cp, 0);
3660 case OPTION_DWARF_START:
3663 dwarf_start_die = strtoul (optarg, & cp, 0);
3664 suppress_bfd_header = 1;
3667 case OPTION_DWARF_CHECK:
3671 dump_stab_section_info = TRUE;
3675 dump_section_contents = TRUE;
3679 dump_reloc_info = TRUE;
3683 dump_dynamic_reloc_info = TRUE;
3687 dump_ar_hdrs = TRUE;
3691 dump_section_headers = TRUE;
3696 show_version = TRUE;
3702 /* No need to set seenflag or to break - usage() does not return. */
3709 print_version ("objdump");
3715 exit_status = display_info ();
3719 display_file ("a.out", target);
3721 for (; optind < argc;)
3722 display_file (argv[optind++], target);
3727 END_PROGRESS (program_name);