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);
565 bfd_fatal (bfd_get_filename (abfd));
567 sy = (asymbol **) xmalloc (storage);
569 symcount = bfd_canonicalize_symtab (abfd, sy);
571 bfd_fatal (bfd_get_filename (abfd));
575 /* Read in the dynamic symbols. */
578 slurp_dynamic_symtab (bfd *abfd)
583 storage = bfd_get_dynamic_symtab_upper_bound (abfd);
586 if (!(bfd_get_file_flags (abfd) & DYNAMIC))
588 non_fatal (_("%s: not a dynamic object"), bfd_get_filename (abfd));
594 bfd_fatal (bfd_get_filename (abfd));
597 sy = (asymbol **) xmalloc (storage);
599 dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, sy);
601 bfd_fatal (bfd_get_filename (abfd));
605 /* Filter out (in place) symbols that are useless for disassembly.
606 COUNT is the number of elements in SYMBOLS.
607 Return the number of useful symbols. */
610 remove_useless_symbols (asymbol **symbols, long count)
612 asymbol **in_ptr = symbols, **out_ptr = symbols;
616 asymbol *sym = *in_ptr++;
618 if (sym->name == NULL || sym->name[0] == '\0')
620 if (sym->flags & (BSF_DEBUGGING | BSF_SECTION_SYM))
622 if (bfd_is_und_section (sym->section)
623 || bfd_is_com_section (sym->section))
628 return out_ptr - symbols;
631 /* Sort symbols into value order. */
634 compare_symbols (const void *ap, const void *bp)
636 const asymbol *a = * (const asymbol **) ap;
637 const asymbol *b = * (const asymbol **) bp;
647 if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
649 else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
652 if (a->section > b->section)
654 else if (a->section < b->section)
657 an = bfd_asymbol_name (a);
658 bn = bfd_asymbol_name (b);
662 /* The symbols gnu_compiled and gcc2_compiled convey no real
663 information, so put them after other symbols with the same value. */
664 af = (strstr (an, "gnu_compiled") != NULL
665 || strstr (an, "gcc2_compiled") != NULL);
666 bf = (strstr (bn, "gnu_compiled") != NULL
667 || strstr (bn, "gcc2_compiled") != NULL);
674 /* We use a heuristic for the file name, to try to sort it after
675 more useful symbols. It may not work on non Unix systems, but it
676 doesn't really matter; the only difference is precisely which
677 symbol names get printed. */
679 #define file_symbol(s, sn, snl) \
680 (((s)->flags & BSF_FILE) != 0 \
681 || ((sn)[(snl) - 2] == '.' \
682 && ((sn)[(snl) - 1] == 'o' \
683 || (sn)[(snl) - 1] == 'a')))
685 af = file_symbol (a, an, anl);
686 bf = file_symbol (b, bn, bnl);
693 /* Try to sort global symbols before local symbols before function
694 symbols before debugging symbols. */
699 if ((aflags & BSF_DEBUGGING) != (bflags & BSF_DEBUGGING))
701 if ((aflags & BSF_DEBUGGING) != 0)
706 if ((aflags & BSF_FUNCTION) != (bflags & BSF_FUNCTION))
708 if ((aflags & BSF_FUNCTION) != 0)
713 if ((aflags & BSF_LOCAL) != (bflags & BSF_LOCAL))
715 if ((aflags & BSF_LOCAL) != 0)
720 if ((aflags & BSF_GLOBAL) != (bflags & BSF_GLOBAL))
722 if ((aflags & BSF_GLOBAL) != 0)
728 /* Symbols that start with '.' might be section names, so sort them
729 after symbols that don't start with '.'. */
730 if (an[0] == '.' && bn[0] != '.')
732 if (an[0] != '.' && bn[0] == '.')
735 /* Finally, if we can't distinguish them in any other way, try to
736 get consistent results by sorting the symbols by name. */
737 return strcmp (an, bn);
740 /* Sort relocs into address order. */
743 compare_relocs (const void *ap, const void *bp)
745 const arelent *a = * (const arelent **) ap;
746 const arelent *b = * (const arelent **) bp;
748 if (a->address > b->address)
750 else if (a->address < b->address)
753 /* So that associated relocations tied to the same address show up
754 in the correct order, we don't do any further sorting. */
763 /* Print an address (VMA) to the output stream in INFO.
764 If SKIP_ZEROES is TRUE, omit leading zeroes. */
767 objdump_print_value (bfd_vma vma, struct disassemble_info *inf,
768 bfd_boolean skip_zeroes)
772 struct objdump_disasm_info *aux;
774 aux = (struct objdump_disasm_info *) inf->application_data;
775 bfd_sprintf_vma (aux->abfd, buf, vma);
780 for (p = buf; *p == '0'; ++p)
785 (*inf->fprintf_func) (inf->stream, "%s", p);
788 /* Print the name of a symbol. */
791 objdump_print_symname (bfd *abfd, struct disassemble_info *inf,
798 name = bfd_asymbol_name (sym);
799 if (do_demangle && name[0] != '\0')
801 /* Demangle the name. */
802 alloc = bfd_demangle (abfd, name, DMGL_ANSI | DMGL_PARAMS);
808 (*inf->fprintf_func) (inf->stream, "%s", name);
816 /* Locate a symbol given a bfd and a section (from INFO->application_data),
817 and a VMA. If INFO->application_data->require_sec is TRUE, then always
818 require the symbol to be in the section. Returns NULL if there is no
819 suitable symbol. If PLACE is not NULL, then *PLACE is set to the index
820 of the symbol in sorted_syms. */
823 find_symbol_for_address (bfd_vma vma,
824 struct disassemble_info *inf,
827 /* @@ Would it speed things up to cache the last two symbols returned,
828 and maybe their address ranges? For many processors, only one memory
829 operand can be present at a time, so the 2-entry cache wouldn't be
830 constantly churned by code doing heavy memory accesses. */
832 /* Indices in `sorted_syms'. */
834 long max_count = sorted_symcount;
836 struct objdump_disasm_info *aux;
840 bfd_boolean want_section;
842 if (sorted_symcount < 1)
845 aux = (struct objdump_disasm_info *) inf->application_data;
848 opb = inf->octets_per_byte;
850 /* Perform a binary search looking for the closest symbol to the
851 required value. We are searching the range (min, max_count]. */
852 while (min + 1 < max_count)
856 thisplace = (max_count + min) / 2;
857 sym = sorted_syms[thisplace];
859 if (bfd_asymbol_value (sym) > vma)
860 max_count = thisplace;
861 else if (bfd_asymbol_value (sym) < vma)
870 /* The symbol we want is now in min, the low end of the range we
871 were searching. If there are several symbols with the same
872 value, we want the first one. */
875 && (bfd_asymbol_value (sorted_syms[thisplace])
876 == bfd_asymbol_value (sorted_syms[thisplace - 1])))
879 /* Prefer a symbol in the current section if we have multple symbols
880 with the same value, as can occur with overlays or zero size
883 while (min < max_count
884 && (bfd_asymbol_value (sorted_syms[min])
885 == bfd_asymbol_value (sorted_syms[thisplace])))
887 if (sorted_syms[min]->section == sec
888 && inf->symbol_is_valid (sorted_syms[min], inf))
895 return sorted_syms[thisplace];
900 /* If the file is relocatable, and the symbol could be from this
901 section, prefer a symbol from this section over symbols from
902 others, even if the other symbol's value might be closer.
904 Note that this may be wrong for some symbol references if the
905 sections have overlapping memory ranges, but in that case there's
906 no way to tell what's desired without looking at the relocation
909 Also give the target a chance to reject symbols. */
910 want_section = (aux->require_sec
911 || ((abfd->flags & HAS_RELOC) != 0
912 && vma >= bfd_get_section_vma (abfd, sec)
913 && vma < (bfd_get_section_vma (abfd, sec)
914 + bfd_section_size (abfd, sec) / opb)));
915 if ((sorted_syms[thisplace]->section != sec && want_section)
916 || ! inf->symbol_is_valid (sorted_syms[thisplace], inf))
919 long newplace = sorted_symcount;
921 for (i = min - 1; i >= 0; i--)
923 if ((sorted_syms[i]->section == sec || !want_section)
924 && inf->symbol_is_valid (sorted_syms[i], inf))
926 if (newplace == sorted_symcount)
929 if (bfd_asymbol_value (sorted_syms[i])
930 != bfd_asymbol_value (sorted_syms[newplace]))
933 /* Remember this symbol and keep searching until we reach
934 an earlier address. */
939 if (newplace != sorted_symcount)
940 thisplace = newplace;
943 /* We didn't find a good symbol with a smaller value.
944 Look for one with a larger value. */
945 for (i = thisplace + 1; i < sorted_symcount; i++)
947 if ((sorted_syms[i]->section == sec || !want_section)
948 && inf->symbol_is_valid (sorted_syms[i], inf))
956 if ((sorted_syms[thisplace]->section != sec && want_section)
957 || ! inf->symbol_is_valid (sorted_syms[thisplace], inf))
958 /* There is no suitable symbol. */
965 return sorted_syms[thisplace];
968 /* Print an address and the offset to the nearest symbol. */
971 objdump_print_addr_with_sym (bfd *abfd, asection *sec, asymbol *sym,
972 bfd_vma vma, struct disassemble_info *inf,
973 bfd_boolean skip_zeroes)
975 objdump_print_value (vma, inf, skip_zeroes);
981 (*inf->fprintf_func) (inf->stream, " <%s",
982 bfd_get_section_name (abfd, sec));
983 secaddr = bfd_get_section_vma (abfd, sec);
986 (*inf->fprintf_func) (inf->stream, "-0x");
987 objdump_print_value (secaddr - vma, inf, TRUE);
989 else if (vma > secaddr)
991 (*inf->fprintf_func) (inf->stream, "+0x");
992 objdump_print_value (vma - secaddr, inf, TRUE);
994 (*inf->fprintf_func) (inf->stream, ">");
998 (*inf->fprintf_func) (inf->stream, " <");
999 objdump_print_symname (abfd, inf, sym);
1000 if (bfd_asymbol_value (sym) > vma)
1002 (*inf->fprintf_func) (inf->stream, "-0x");
1003 objdump_print_value (bfd_asymbol_value (sym) - vma, inf, TRUE);
1005 else if (vma > bfd_asymbol_value (sym))
1007 (*inf->fprintf_func) (inf->stream, "+0x");
1008 objdump_print_value (vma - bfd_asymbol_value (sym), inf, TRUE);
1010 (*inf->fprintf_func) (inf->stream, ">");
1013 if (display_file_offsets)
1014 inf->fprintf_func (inf->stream, _(" (File Offset: 0x%lx)"),
1015 (long int)(sec->filepos + (vma - sec->vma)));
1018 /* Print an address (VMA), symbolically if possible.
1019 If SKIP_ZEROES is TRUE, don't output leading zeroes. */
1022 objdump_print_addr (bfd_vma vma,
1023 struct disassemble_info *inf,
1024 bfd_boolean skip_zeroes)
1026 struct objdump_disasm_info *aux;
1027 asymbol *sym = NULL;
1028 bfd_boolean skip_find = FALSE;
1030 aux = (struct objdump_disasm_info *) inf->application_data;
1032 if (sorted_symcount < 1)
1034 (*inf->fprintf_func) (inf->stream, "0x");
1035 objdump_print_value (vma, inf, skip_zeroes);
1037 if (display_file_offsets)
1038 inf->fprintf_func (inf->stream, _(" (File Offset: 0x%lx)"),
1039 (long int)(aux->sec->filepos + (vma - aux->sec->vma)));
1043 if (aux->reloc != NULL
1044 && aux->reloc->sym_ptr_ptr != NULL
1045 && * aux->reloc->sym_ptr_ptr != NULL)
1047 sym = * aux->reloc->sym_ptr_ptr;
1049 /* Adjust the vma to the reloc. */
1050 vma += bfd_asymbol_value (sym);
1052 if (bfd_is_und_section (bfd_get_section (sym)))
1057 sym = find_symbol_for_address (vma, inf, NULL);
1059 objdump_print_addr_with_sym (aux->abfd, aux->sec, sym, vma, inf,
1063 /* Print VMA to INFO. This function is passed to the disassembler
1067 objdump_print_address (bfd_vma vma, struct disassemble_info *inf)
1069 objdump_print_addr (vma, inf, ! prefix_addresses);
1072 /* Determine if the given address has a symbol associated with it. */
1075 objdump_symbol_at_address (bfd_vma vma, struct disassemble_info * inf)
1079 sym = find_symbol_for_address (vma, inf, NULL);
1081 return (sym != NULL && (bfd_asymbol_value (sym) == vma));
1084 /* Hold the last function name and the last line number we displayed
1085 in a disassembly. */
1087 static char *prev_functionname;
1088 static unsigned int prev_line;
1089 static unsigned int prev_discriminator;
1091 /* We keep a list of all files that we have seen when doing a
1092 disassembly with source, so that we know how much of the file to
1093 display. This can be important for inlined functions. */
1095 struct print_file_list
1097 struct print_file_list *next;
1098 const char *filename;
1099 const char *modname;
1102 const char **linemap;
1108 static struct print_file_list *print_files;
1110 /* The number of preceding context lines to show when we start
1111 displaying a file for the first time. */
1113 #define SHOW_PRECEDING_CONTEXT_LINES (5)
1115 /* Read a complete file into memory. */
1118 slurp_file (const char *fn, size_t *size)
1121 int ps = getpagesize ();
1126 int fd = open (fn, O_RDONLY | O_BINARY);
1130 if (fstat (fd, &st) < 0)
1137 msize = (*size + ps - 1) & ~(ps - 1);
1138 map = mmap (NULL, msize, PROT_READ, MAP_SHARED, fd, 0);
1139 if (map != (char *) -1L)
1145 map = (const char *) malloc (*size);
1146 if (!map || (size_t) read (fd, (char *) map, *size) != *size)
1148 free ((void *) map);
1155 #define line_map_decrease 5
1157 /* Precompute array of lines for a mapped file. */
1159 static const char **
1160 index_file (const char *map, size_t size, unsigned int *maxline)
1162 const char *p, *lstart, *end;
1163 int chars_per_line = 45; /* First iteration will use 40. */
1164 unsigned int lineno;
1165 const char **linemap = NULL;
1166 unsigned long line_map_size = 0;
1172 for (p = map; p < end; p++)
1176 if (p + 1 < end && p[1] == '\r')
1179 else if (*p == '\r')
1181 if (p + 1 < end && p[1] == '\n')
1187 /* End of line found. */
1189 if (linemap == NULL || line_map_size < lineno + 1)
1191 unsigned long newsize;
1193 chars_per_line -= line_map_decrease;
1194 if (chars_per_line <= 1)
1196 line_map_size = size / chars_per_line + 1;
1197 if (line_map_size < lineno + 1)
1198 line_map_size = lineno + 1;
1199 newsize = line_map_size * sizeof (char *);
1200 linemap = (const char **) xrealloc (linemap, newsize);
1203 linemap[lineno++] = lstart;
1211 /* Tries to open MODNAME, and if successful adds a node to print_files
1212 linked list and returns that node. Returns NULL on failure. */
1214 static struct print_file_list *
1215 try_print_file_open (const char *origname, const char *modname)
1217 struct print_file_list *p;
1219 p = (struct print_file_list *) xmalloc (sizeof (struct print_file_list));
1221 p->map = slurp_file (modname, &p->mapsize);
1228 p->linemap = index_file (p->map, p->mapsize, &p->maxline);
1230 p->filename = origname;
1231 p->modname = modname;
1232 p->next = print_files;
1238 /* If the source file, as described in the symtab, is not found
1239 try to locate it in one of the paths specified with -I
1240 If found, add location to print_files linked list. */
1242 static struct print_file_list *
1243 update_source_path (const char *filename)
1245 struct print_file_list *p;
1249 p = try_print_file_open (filename, filename);
1253 if (include_path_count == 0)
1256 /* Get the name of the file. */
1257 fname = lbasename (filename);
1259 /* If file exists under a new path, we need to add it to the list
1260 so that show_line knows about it. */
1261 for (i = 0; i < include_path_count; i++)
1263 char *modname = concat (include_paths[i], "/", fname, (const char *) 0);
1265 p = try_print_file_open (filename, modname);
1275 /* Print a source file line. */
1278 print_line (struct print_file_list *p, unsigned int linenum)
1284 if (linenum >= p->maxline)
1286 l = p->linemap [linenum];
1287 /* Test fwrite return value to quiet glibc warning. */
1288 len = strcspn (l, "\n\r");
1289 if (len == 0 || fwrite (l, len, 1, stdout) == 1)
1293 /* Print a range of source code lines. */
1296 dump_lines (struct print_file_list *p, unsigned int start, unsigned int end)
1300 while (start <= end)
1302 print_line (p, start);
1307 /* Show the line number, or the source line, in a disassembly
1311 show_line (bfd *abfd, asection *section, bfd_vma addr_offset)
1313 const char *filename;
1314 const char *functionname;
1315 unsigned int linenumber;
1316 unsigned int discriminator;
1319 if (! with_line_numbers && ! with_source_code)
1322 if (! bfd_find_nearest_line_discriminator (abfd, section, syms, addr_offset,
1323 &filename, &functionname,
1324 &linenumber, &discriminator))
1327 if (filename != NULL && *filename == '\0')
1329 if (functionname != NULL && *functionname == '\0')
1330 functionname = NULL;
1333 && IS_ABSOLUTE_PATH (filename)
1337 const char *fname = filename;
1338 char *path = (char *) alloca (prefix_length + PATH_MAX + 1);
1341 memcpy (path, prefix, prefix_length);
1342 path_up = path + prefix_length;
1344 /* Build relocated filename, stripping off leading directories
1345 from the initial filename if requested. */
1346 if (prefix_strip > 0)
1351 /* Skip selected directory levels. */
1352 for (s = fname + 1; *s != '\0' && level < prefix_strip; s++)
1353 if (IS_DIR_SEPARATOR(*s))
1360 /* Update complete filename. */
1361 strncpy (path_up, fname, PATH_MAX);
1362 path_up[PATH_MAX] = '\0';
1370 if (with_line_numbers)
1372 if (functionname != NULL
1373 && (prev_functionname == NULL
1374 || strcmp (functionname, prev_functionname) != 0))
1375 printf ("%s():\n", functionname);
1376 if (linenumber > 0 && (linenumber != prev_line ||
1377 (discriminator != prev_discriminator)))
1379 if (discriminator > 0)
1380 printf ("%s:%u (discriminator %u)\n", filename == NULL ? "???" : filename,
1381 linenumber, discriminator);
1383 printf ("%s:%u\n", filename == NULL ? "???" : filename, linenumber);
1387 if (with_source_code
1391 struct print_file_list **pp, *p;
1394 for (pp = &print_files; *pp != NULL; pp = &(*pp)->next)
1395 if (filename_cmp ((*pp)->filename, filename) == 0)
1402 filename = xstrdup (filename);
1403 p = update_source_path (filename);
1406 if (p != NULL && linenumber != p->last_line)
1408 if (file_start_context && p->first)
1412 l = linenumber - SHOW_PRECEDING_CONTEXT_LINES;
1413 if (l >= linenumber)
1415 if (p->last_line >= l && p->last_line <= linenumber)
1416 l = p->last_line + 1;
1418 dump_lines (p, l, linenumber);
1419 p->last_line = linenumber;
1424 if (functionname != NULL
1425 && (prev_functionname == NULL
1426 || strcmp (functionname, prev_functionname) != 0))
1428 if (prev_functionname != NULL)
1429 free (prev_functionname);
1430 prev_functionname = (char *) xmalloc (strlen (functionname) + 1);
1431 strcpy (prev_functionname, functionname);
1434 if (linenumber > 0 && linenumber != prev_line)
1435 prev_line = linenumber;
1437 if (discriminator != prev_discriminator)
1438 prev_discriminator = discriminator;
1441 /* Pseudo FILE object for strings. */
1449 /* sprintf to a "stream". */
1451 static int ATTRIBUTE_PRINTF_2
1452 objdump_sprintf (SFILE *f, const char *format, ...)
1459 size_t space = f->alloc - f->pos;
1461 va_start (args, format);
1462 n = vsnprintf (f->buffer + f->pos, space, format, args);
1468 f->alloc = (f->alloc + n) * 2;
1469 f->buffer = (char *) xrealloc (f->buffer, f->alloc);
1476 /* The number of zeroes we want to see before we start skipping them.
1477 The number is arbitrarily chosen. */
1479 #define DEFAULT_SKIP_ZEROES 8
1481 /* The number of zeroes to skip at the end of a section. If the
1482 number of zeroes at the end is between SKIP_ZEROES_AT_END and
1483 SKIP_ZEROES, they will be disassembled. If there are fewer than
1484 SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic
1485 attempt to avoid disassembling zeroes inserted by section
1488 #define DEFAULT_SKIP_ZEROES_AT_END 3
1490 /* Disassemble some data in memory between given values. */
1493 disassemble_bytes (struct disassemble_info * inf,
1494 disassembler_ftype disassemble_fn,
1497 bfd_vma start_offset,
1498 bfd_vma stop_offset,
1501 arelent ** relppend)
1503 struct objdump_disasm_info *aux;
1505 int octets_per_line;
1506 int skip_addr_chars;
1507 bfd_vma addr_offset;
1508 unsigned int opb = inf->octets_per_byte;
1509 unsigned int skip_zeroes = inf->skip_zeroes;
1510 unsigned int skip_zeroes_at_end = inf->skip_zeroes_at_end;
1514 aux = (struct objdump_disasm_info *) inf->application_data;
1518 sfile.buffer = (char *) xmalloc (sfile.alloc);
1522 octets_per_line = insn_width;
1524 octets_per_line = 4;
1526 octets_per_line = 16;
1528 /* Figure out how many characters to skip at the start of an
1529 address, to make the disassembly look nicer. We discard leading
1530 zeroes in chunks of 4, ensuring that there is always a leading
1532 skip_addr_chars = 0;
1533 if (! prefix_addresses)
1537 bfd_sprintf_vma (aux->abfd, buf, section->vma + section->size / opb);
1539 while (buf[skip_addr_chars] == '0')
1542 /* Don't discard zeros on overflow. */
1543 if (buf[skip_addr_chars] == '\0' && section->vma != 0)
1544 skip_addr_chars = 0;
1546 if (skip_addr_chars != 0)
1547 skip_addr_chars = (skip_addr_chars - 1) & -4;
1550 inf->insn_info_valid = 0;
1552 addr_offset = start_offset;
1553 while (addr_offset < stop_offset)
1556 bfd_boolean need_nl = FALSE;
1557 int previous_octets;
1559 /* Remember the length of the previous instruction. */
1560 previous_octets = octets;
1563 /* Make sure we don't use relocs from previous instructions. */
1566 /* If we see more than SKIP_ZEROES octets of zeroes, we just
1568 for (z = addr_offset * opb; z < stop_offset * opb; z++)
1571 if (! disassemble_zeroes
1572 && (inf->insn_info_valid == 0
1573 || inf->branch_delay_insns == 0)
1574 && (z - addr_offset * opb >= skip_zeroes
1575 || (z == stop_offset * opb &&
1576 z - addr_offset * opb < skip_zeroes_at_end)))
1578 /* If there are more nonzero octets to follow, we only skip
1579 zeroes in multiples of 4, to try to avoid running over
1580 the start of an instruction which happens to start with
1582 if (z != stop_offset * opb)
1583 z = addr_offset * opb + ((z - addr_offset * opb) &~ 3);
1585 octets = z - addr_offset * opb;
1587 /* If we are going to display more data, and we are displaying
1588 file offsets, then tell the user how many zeroes we skip
1589 and the file offset from where we resume dumping. */
1590 if (display_file_offsets && ((addr_offset + (octets / opb)) < stop_offset))
1591 printf ("\t... (skipping %d zeroes, resuming at file offset: 0x%lx)\n",
1593 (unsigned long) (section->filepos
1594 + (addr_offset + (octets / opb))));
1604 if (with_line_numbers || with_source_code)
1605 show_line (aux->abfd, section, addr_offset);
1607 if (! prefix_addresses)
1611 bfd_sprintf_vma (aux->abfd, buf, section->vma + addr_offset);
1612 for (s = buf + skip_addr_chars; *s == '0'; s++)
1616 printf ("%s:\t", buf + skip_addr_chars);
1620 aux->require_sec = TRUE;
1621 objdump_print_address (section->vma + addr_offset, inf);
1622 aux->require_sec = FALSE;
1629 inf->fprintf_func = (fprintf_ftype) objdump_sprintf;
1630 inf->stream = &sfile;
1631 inf->bytes_per_line = 0;
1632 inf->bytes_per_chunk = 0;
1633 inf->flags = disassemble_all ? DISASSEMBLE_DATA : 0;
1635 inf->flags |= USER_SPECIFIED_MACHINE_TYPE;
1637 if (inf->disassembler_needs_relocs
1638 && (bfd_get_file_flags (aux->abfd) & EXEC_P) == 0
1639 && (bfd_get_file_flags (aux->abfd) & DYNAMIC) == 0
1640 && *relppp < relppend)
1642 bfd_signed_vma distance_to_rel;
1644 distance_to_rel = (**relppp)->address
1645 - (rel_offset + addr_offset);
1647 /* Check to see if the current reloc is associated with
1648 the instruction that we are about to disassemble. */
1649 if (distance_to_rel == 0
1650 /* FIXME: This is wrong. We are trying to catch
1651 relocs that are addressed part way through the
1652 current instruction, as might happen with a packed
1653 VLIW instruction. Unfortunately we do not know the
1654 length of the current instruction since we have not
1655 disassembled it yet. Instead we take a guess based
1656 upon the length of the previous instruction. The
1657 proper solution is to have a new target-specific
1658 disassembler function which just returns the length
1659 of an instruction at a given address without trying
1660 to display its disassembly. */
1661 || (distance_to_rel > 0
1662 && distance_to_rel < (bfd_signed_vma) (previous_octets/ opb)))
1664 inf->flags |= INSN_HAS_RELOC;
1665 aux->reloc = **relppp;
1669 octets = (*disassemble_fn) (section->vma + addr_offset, inf);
1670 inf->fprintf_func = (fprintf_ftype) fprintf;
1671 inf->stream = stdout;
1672 if (insn_width == 0 && inf->bytes_per_line != 0)
1673 octets_per_line = inf->bytes_per_line;
1674 if (octets < (int) opb)
1677 printf ("%s\n", sfile.buffer);
1680 non_fatal (_("disassemble_fn returned length %d"),
1691 octets = octets_per_line;
1692 if (addr_offset + octets / opb > stop_offset)
1693 octets = (stop_offset - addr_offset) * opb;
1695 for (j = addr_offset * opb; j < addr_offset * opb + octets; ++j)
1697 if (ISPRINT (data[j]))
1698 buf[j - addr_offset * opb] = data[j];
1700 buf[j - addr_offset * opb] = '.';
1702 buf[j - addr_offset * opb] = '\0';
1705 if (prefix_addresses
1707 : show_raw_insn >= 0)
1711 /* If ! prefix_addresses and ! wide_output, we print
1712 octets_per_line octets per line. */
1714 if (pb > octets_per_line && ! prefix_addresses && ! wide_output)
1715 pb = octets_per_line;
1717 if (inf->bytes_per_chunk)
1718 bpc = inf->bytes_per_chunk;
1722 for (j = addr_offset * opb; j < addr_offset * opb + pb; j += bpc)
1726 if (bpc > 1 && inf->display_endian == BFD_ENDIAN_LITTLE)
1728 for (k = bpc - 1; k >= 0; k--)
1729 printf ("%02x", (unsigned) data[j + k]);
1734 for (k = 0; k < bpc; k++)
1735 printf ("%02x", (unsigned) data[j + k]);
1740 for (; pb < octets_per_line; pb += bpc)
1744 for (k = 0; k < bpc; k++)
1749 /* Separate raw data from instruction by extra space. */
1759 printf ("%s", sfile.buffer);
1761 if (prefix_addresses
1763 : show_raw_insn >= 0)
1771 j = addr_offset * opb + pb;
1773 bfd_sprintf_vma (aux->abfd, buf, section->vma + j / opb);
1774 for (s = buf + skip_addr_chars; *s == '0'; s++)
1778 printf ("%s:\t", buf + skip_addr_chars);
1780 pb += octets_per_line;
1783 for (; j < addr_offset * opb + pb; j += bpc)
1787 if (bpc > 1 && inf->display_endian == BFD_ENDIAN_LITTLE)
1789 for (k = bpc - 1; k >= 0; k--)
1790 printf ("%02x", (unsigned) data[j + k]);
1795 for (k = 0; k < bpc; k++)
1796 printf ("%02x", (unsigned) data[j + k]);
1809 while ((*relppp) < relppend
1810 && (**relppp)->address < rel_offset + addr_offset + octets / opb)
1812 if (dump_reloc_info || dump_dynamic_reloc_info)
1823 objdump_print_value (section->vma - rel_offset + q->address,
1826 if (q->howto == NULL)
1827 printf (": *unknown*\t");
1828 else if (q->howto->name)
1829 printf (": %s\t", q->howto->name);
1831 printf (": %d\t", q->howto->type);
1833 if (q->sym_ptr_ptr == NULL || *q->sym_ptr_ptr == NULL)
1834 printf ("*unknown*");
1837 const char *sym_name;
1839 sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
1840 if (sym_name != NULL && *sym_name != '\0')
1841 objdump_print_symname (aux->abfd, inf, *q->sym_ptr_ptr);
1846 sym_sec = bfd_get_section (*q->sym_ptr_ptr);
1847 sym_name = bfd_get_section_name (aux->abfd, sym_sec);
1848 if (sym_name == NULL || *sym_name == '\0')
1849 sym_name = "*unknown*";
1850 printf ("%s", sym_name);
1856 bfd_signed_vma addend = q->addend;
1864 objdump_print_value (addend, inf, TRUE);
1876 addr_offset += octets / opb;
1879 free (sfile.buffer);
1883 disassemble_section (bfd *abfd, asection *section, void *inf)
1885 const struct elf_backend_data * bed;
1886 bfd_vma sign_adjust = 0;
1887 struct disassemble_info * pinfo = (struct disassemble_info *) inf;
1888 struct objdump_disasm_info * paux;
1889 unsigned int opb = pinfo->octets_per_byte;
1890 bfd_byte * data = NULL;
1891 bfd_size_type datasize = 0;
1892 arelent ** rel_pp = NULL;
1893 arelent ** rel_ppstart = NULL;
1894 arelent ** rel_ppend;
1895 unsigned long stop_offset;
1896 asymbol * sym = NULL;
1900 unsigned long addr_offset;
1902 /* Sections that do not contain machine
1903 code are not normally disassembled. */
1904 if (! disassemble_all
1905 && only_list == NULL
1906 && ((section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
1907 != (SEC_CODE | SEC_HAS_CONTENTS)))
1910 if (! process_section_p (section))
1913 datasize = bfd_get_section_size (section);
1917 if (start_address == (bfd_vma) -1
1918 || start_address < section->vma)
1921 addr_offset = start_address - section->vma;
1923 if (stop_address == (bfd_vma) -1)
1924 stop_offset = datasize / opb;
1927 if (stop_address < section->vma)
1930 stop_offset = stop_address - section->vma;
1931 if (stop_offset > datasize / opb)
1932 stop_offset = datasize / opb;
1935 if (addr_offset >= stop_offset)
1938 /* Decide which set of relocs to use. Load them if necessary. */
1939 paux = (struct objdump_disasm_info *) pinfo->application_data;
1940 if (paux->dynrelbuf)
1942 rel_pp = paux->dynrelbuf;
1943 rel_count = paux->dynrelcount;
1944 /* Dynamic reloc addresses are absolute, non-dynamic are section
1945 relative. REL_OFFSET specifies the reloc address corresponding
1946 to the start of this section. */
1947 rel_offset = section->vma;
1955 if ((section->flags & SEC_RELOC) != 0
1956 && (dump_reloc_info || pinfo->disassembler_needs_relocs))
1960 relsize = bfd_get_reloc_upper_bound (abfd, section);
1962 bfd_fatal (bfd_get_filename (abfd));
1966 rel_ppstart = rel_pp = (arelent **) xmalloc (relsize);
1967 rel_count = bfd_canonicalize_reloc (abfd, section, rel_pp, syms);
1969 bfd_fatal (bfd_get_filename (abfd));
1971 /* Sort the relocs by address. */
1972 qsort (rel_pp, rel_count, sizeof (arelent *), compare_relocs);
1976 rel_ppend = rel_pp + rel_count;
1978 data = (bfd_byte *) xmalloc (datasize);
1980 bfd_get_section_contents (abfd, section, data, 0, datasize);
1982 paux->sec = section;
1983 pinfo->buffer = data;
1984 pinfo->buffer_vma = section->vma;
1985 pinfo->buffer_length = datasize;
1986 pinfo->section = section;
1988 /* Skip over the relocs belonging to addresses below the
1990 while (rel_pp < rel_ppend
1991 && (*rel_pp)->address < rel_offset + addr_offset)
1994 printf (_("\nDisassembly of section %s:\n"), section->name);
1996 /* Find the nearest symbol forwards from our current position. */
1997 paux->require_sec = TRUE;
1998 sym = (asymbol *) find_symbol_for_address (section->vma + addr_offset,
1999 (struct disassemble_info *) inf,
2001 paux->require_sec = FALSE;
2003 /* PR 9774: If the target used signed addresses then we must make
2004 sure that we sign extend the value that we calculate for 'addr'
2005 in the loop below. */
2006 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
2007 && (bed = get_elf_backend_data (abfd)) != NULL
2008 && bed->sign_extend_vma)
2009 sign_adjust = (bfd_vma) 1 << (bed->s->arch_size - 1);
2011 /* Disassemble a block of instructions up to the address associated with
2012 the symbol we have just found. Then print the symbol and find the
2013 next symbol on. Repeat until we have disassembled the entire section
2014 or we have reached the end of the address range we are interested in. */
2015 while (addr_offset < stop_offset)
2019 unsigned long nextstop_offset;
2022 addr = section->vma + addr_offset;
2023 addr = ((addr & ((sign_adjust << 1) - 1)) ^ sign_adjust) - sign_adjust;
2025 if (sym != NULL && bfd_asymbol_value (sym) <= addr)
2030 (x < sorted_symcount
2031 && (bfd_asymbol_value (sorted_syms[x]) <= addr));
2035 pinfo->symbols = sorted_syms + place;
2036 pinfo->num_symbols = x - place;
2037 pinfo->symtab_pos = place;
2041 pinfo->symbols = NULL;
2042 pinfo->num_symbols = 0;
2043 pinfo->symtab_pos = -1;
2046 if (! prefix_addresses)
2048 pinfo->fprintf_func (pinfo->stream, "\n");
2049 objdump_print_addr_with_sym (abfd, section, sym, addr,
2051 pinfo->fprintf_func (pinfo->stream, ":\n");
2054 if (sym != NULL && bfd_asymbol_value (sym) > addr)
2056 else if (sym == NULL)
2060 #define is_valid_next_sym(SYM) \
2061 ((SYM)->section == section \
2062 && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
2063 && pinfo->symbol_is_valid (SYM, pinfo))
2065 /* Search forward for the next appropriate symbol in
2066 SECTION. Note that all the symbols are sorted
2067 together into one big array, and that some sections
2068 may have overlapping addresses. */
2069 while (place < sorted_symcount
2070 && ! is_valid_next_sym (sorted_syms [place]))
2073 if (place >= sorted_symcount)
2076 nextsym = sorted_syms[place];
2079 if (sym != NULL && bfd_asymbol_value (sym) > addr)
2080 nextstop_offset = bfd_asymbol_value (sym) - section->vma;
2081 else if (nextsym == NULL)
2082 nextstop_offset = stop_offset;
2084 nextstop_offset = bfd_asymbol_value (nextsym) - section->vma;
2086 if (nextstop_offset > stop_offset
2087 || nextstop_offset <= addr_offset)
2088 nextstop_offset = stop_offset;
2090 /* If a symbol is explicitly marked as being an object
2091 rather than a function, just dump the bytes without
2092 disassembling them. */
2095 || sym->section != section
2096 || bfd_asymbol_value (sym) > addr
2097 || ((sym->flags & BSF_OBJECT) == 0
2098 && (strstr (bfd_asymbol_name (sym), "gnu_compiled")
2100 && (strstr (bfd_asymbol_name (sym), "gcc2_compiled")
2102 || (sym->flags & BSF_FUNCTION) != 0)
2107 disassemble_bytes (pinfo, paux->disassemble_fn, insns, data,
2108 addr_offset, nextstop_offset,
2109 rel_offset, &rel_pp, rel_ppend);
2111 addr_offset = nextstop_offset;
2117 if (rel_ppstart != NULL)
2121 /* Disassemble the contents of an object file. */
2124 disassemble_data (bfd *abfd)
2126 struct disassemble_info disasm_info;
2127 struct objdump_disasm_info aux;
2131 prev_functionname = NULL;
2133 prev_discriminator = 0;
2135 /* We make a copy of syms to sort. We don't want to sort syms
2136 because that will screw up the relocs. */
2137 sorted_symcount = symcount ? symcount : dynsymcount;
2138 sorted_syms = (asymbol **) xmalloc ((sorted_symcount + synthcount)
2139 * sizeof (asymbol *));
2140 memcpy (sorted_syms, symcount ? syms : dynsyms,
2141 sorted_symcount * sizeof (asymbol *));
2143 sorted_symcount = remove_useless_symbols (sorted_syms, sorted_symcount);
2145 for (i = 0; i < synthcount; ++i)
2147 sorted_syms[sorted_symcount] = synthsyms + i;
2151 /* Sort the symbols into section and symbol order. */
2152 qsort (sorted_syms, sorted_symcount, sizeof (asymbol *), compare_symbols);
2154 init_disassemble_info (&disasm_info, stdout, (fprintf_ftype) fprintf);
2156 disasm_info.application_data = (void *) &aux;
2158 aux.require_sec = FALSE;
2159 aux.dynrelbuf = NULL;
2160 aux.dynrelcount = 0;
2163 disasm_info.print_address_func = objdump_print_address;
2164 disasm_info.symbol_at_address_func = objdump_symbol_at_address;
2166 if (machine != NULL)
2168 const bfd_arch_info_type *inf = bfd_scan_arch (machine);
2171 fatal (_("can't use supplied machine %s"), machine);
2173 abfd->arch_info = inf;
2176 if (endian != BFD_ENDIAN_UNKNOWN)
2178 struct bfd_target *xvec;
2180 xvec = (struct bfd_target *) xmalloc (sizeof (struct bfd_target));
2181 memcpy (xvec, abfd->xvec, sizeof (struct bfd_target));
2182 xvec->byteorder = endian;
2186 /* Use libopcodes to locate a suitable disassembler. */
2187 aux.disassemble_fn = disassembler (abfd);
2188 if (!aux.disassemble_fn)
2190 non_fatal (_("can't disassemble for architecture %s\n"),
2191 bfd_printable_arch_mach (bfd_get_arch (abfd), 0));
2196 disasm_info.flavour = bfd_get_flavour (abfd);
2197 disasm_info.arch = bfd_get_arch (abfd);
2198 disasm_info.mach = bfd_get_mach (abfd);
2199 disasm_info.disassembler_options = disassembler_options;
2200 disasm_info.octets_per_byte = bfd_octets_per_byte (abfd);
2201 disasm_info.skip_zeroes = DEFAULT_SKIP_ZEROES;
2202 disasm_info.skip_zeroes_at_end = DEFAULT_SKIP_ZEROES_AT_END;
2203 disasm_info.disassembler_needs_relocs = FALSE;
2205 if (bfd_big_endian (abfd))
2206 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_BIG;
2207 else if (bfd_little_endian (abfd))
2208 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_LITTLE;
2210 /* ??? Aborting here seems too drastic. We could default to big or little
2212 disasm_info.endian = BFD_ENDIAN_UNKNOWN;
2214 /* Allow the target to customize the info structure. */
2215 disassemble_init_for_target (& disasm_info);
2217 /* Pre-load the dynamic relocs if we are going
2218 to be dumping them along with the disassembly. */
2219 if (dump_dynamic_reloc_info)
2221 long relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2224 bfd_fatal (bfd_get_filename (abfd));
2228 aux.dynrelbuf = (arelent **) xmalloc (relsize);
2229 aux.dynrelcount = bfd_canonicalize_dynamic_reloc (abfd,
2232 if (aux.dynrelcount < 0)
2233 bfd_fatal (bfd_get_filename (abfd));
2235 /* Sort the relocs by address. */
2236 qsort (aux.dynrelbuf, aux.dynrelcount, sizeof (arelent *),
2240 disasm_info.symtab = sorted_syms;
2241 disasm_info.symtab_size = sorted_symcount;
2243 bfd_map_over_sections (abfd, disassemble_section, & disasm_info);
2245 if (aux.dynrelbuf != NULL)
2246 free (aux.dynrelbuf);
2251 load_specific_debug_section (enum dwarf_section_display_enum debug,
2252 asection *sec, void *file)
2254 struct dwarf_section *section = &debug_displays [debug].section;
2255 bfd *abfd = (bfd *) file;
2258 /* If it is already loaded, do nothing. */
2259 if (section->start != NULL)
2262 section->address = bfd_get_section_vma (abfd, sec);
2263 section->size = bfd_get_section_size (sec);
2264 section->start = NULL;
2265 ret = bfd_get_full_section_contents (abfd, sec, §ion->start);
2269 free_debug_section (debug);
2270 printf (_("\nCan't get contents for section '%s'.\n"),
2275 if (is_relocatable && debug_displays [debug].relocate)
2277 bfd_cache_section_contents (sec, section->start);
2279 ret = bfd_simple_get_relocated_section_contents (abfd,
2286 free_debug_section (debug);
2287 printf (_("\nCan't get contents for section '%s'.\n"),
2297 load_debug_section (enum dwarf_section_display_enum debug, void *file)
2299 struct dwarf_section *section = &debug_displays [debug].section;
2300 bfd *abfd = (bfd *) file;
2303 /* If it is already loaded, do nothing. */
2304 if (section->start != NULL)
2307 /* Locate the debug section. */
2308 sec = bfd_get_section_by_name (abfd, section->uncompressed_name);
2310 section->name = section->uncompressed_name;
2313 sec = bfd_get_section_by_name (abfd, section->compressed_name);
2315 section->name = section->compressed_name;
2320 return load_specific_debug_section (debug, sec, file);
2324 free_debug_section (enum dwarf_section_display_enum debug)
2326 struct dwarf_section *section = &debug_displays [debug].section;
2328 if (section->start == NULL)
2331 free ((char *) section->start);
2332 section->start = NULL;
2333 section->address = 0;
2338 dump_dwarf_section (bfd *abfd, asection *section,
2339 void *arg ATTRIBUTE_UNUSED)
2341 const char *name = bfd_get_section_name (abfd, section);
2345 if (CONST_STRNEQ (name, ".gnu.linkonce.wi."))
2346 match = ".debug_info";
2350 for (i = 0; i < max; i++)
2351 if ((strcmp (debug_displays [i].section.uncompressed_name, match) == 0
2352 || strcmp (debug_displays [i].section.compressed_name, match) == 0)
2353 && debug_displays [i].enabled != NULL
2354 && *debug_displays [i].enabled)
2356 struct dwarf_section *sec = &debug_displays [i].section;
2358 if (strcmp (sec->uncompressed_name, match) == 0)
2359 sec->name = sec->uncompressed_name;
2361 sec->name = sec->compressed_name;
2362 if (load_specific_debug_section ((enum dwarf_section_display_enum) i,
2365 debug_displays [i].display (sec, abfd);
2367 if (i != info && i != abbrev)
2368 free_debug_section ((enum dwarf_section_display_enum) i);
2374 /* Dump the dwarf debugging information. */
2377 dump_dwarf (bfd *abfd)
2379 is_relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2381 eh_addr_size = bfd_arch_bits_per_address (abfd) / 8;
2383 if (bfd_big_endian (abfd))
2384 byte_get = byte_get_big_endian;
2385 else if (bfd_little_endian (abfd))
2386 byte_get = byte_get_little_endian;
2390 switch (bfd_get_arch (abfd))
2393 switch (bfd_get_mach (abfd))
2395 case bfd_mach_x86_64:
2396 case bfd_mach_x86_64_intel_syntax:
2397 case bfd_mach_x86_64_nacl:
2398 case bfd_mach_x64_32:
2399 case bfd_mach_x64_32_intel_syntax:
2400 case bfd_mach_x64_32_nacl:
2401 init_dwarf_regnames_x86_64 ();
2405 init_dwarf_regnames_i386 ();
2410 case bfd_arch_aarch64:
2411 init_dwarf_regnames_aarch64();
2418 bfd_map_over_sections (abfd, dump_dwarf_section, NULL);
2420 free_debug_memory ();
2423 /* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
2424 it. Return NULL on failure. */
2427 read_section_stabs (bfd *abfd, const char *sect_name, bfd_size_type *size_ptr)
2433 stabsect = bfd_get_section_by_name (abfd, sect_name);
2434 if (stabsect == NULL)
2436 printf (_("No %s section present\n\n"), sect_name);
2440 size = bfd_section_size (abfd, stabsect);
2441 contents = (char *) xmalloc (size);
2443 if (! bfd_get_section_contents (abfd, stabsect, contents, 0, size))
2445 non_fatal (_("reading %s section of %s failed: %s"),
2446 sect_name, bfd_get_filename (abfd),
2447 bfd_errmsg (bfd_get_error ()));
2458 /* Stabs entries use a 12 byte format:
2459 4 byte string table index
2461 1 byte stab other field
2462 2 byte stab desc field
2464 FIXME: This will have to change for a 64 bit object format. */
2466 #define STRDXOFF (0)
2468 #define OTHEROFF (5)
2471 #define STABSIZE (12)
2473 /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
2474 using string table section STRSECT_NAME (in `strtab'). */
2477 print_section_stabs (bfd *abfd,
2478 const char *stabsect_name,
2479 unsigned *string_offset_ptr)
2482 unsigned file_string_table_offset = 0;
2483 unsigned next_file_string_table_offset = *string_offset_ptr;
2484 bfd_byte *stabp, *stabs_end;
2487 stabs_end = stabp + stab_size;
2489 printf (_("Contents of %s section:\n\n"), stabsect_name);
2490 printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
2492 /* Loop through all symbols and print them.
2494 We start the index at -1 because there is a dummy symbol on
2495 the front of stabs-in-{coff,elf} sections that supplies sizes. */
2496 for (i = -1; stabp < stabs_end; stabp += STABSIZE, i++)
2500 unsigned char type, other;
2501 unsigned short desc;
2504 strx = bfd_h_get_32 (abfd, stabp + STRDXOFF);
2505 type = bfd_h_get_8 (abfd, stabp + TYPEOFF);
2506 other = bfd_h_get_8 (abfd, stabp + OTHEROFF);
2507 desc = bfd_h_get_16 (abfd, stabp + DESCOFF);
2508 value = bfd_h_get_32 (abfd, stabp + VALOFF);
2510 printf ("\n%-6d ", i);
2511 /* Either print the stab name, or, if unnamed, print its number
2512 again (makes consistent formatting for tools like awk). */
2513 name = bfd_get_stab_name (type);
2515 printf ("%-6s", name);
2516 else if (type == N_UNDF)
2519 printf ("%-6d", type);
2520 printf (" %-6d %-6d ", other, desc);
2521 bfd_printf_vma (abfd, value);
2522 printf (" %-6lu", strx);
2524 /* Symbols with type == 0 (N_UNDF) specify the length of the
2525 string table associated with this file. We use that info
2526 to know how to relocate the *next* file's string table indices. */
2529 file_string_table_offset = next_file_string_table_offset;
2530 next_file_string_table_offset += value;
2534 /* Using the (possibly updated) string table offset, print the
2535 string (if any) associated with this symbol. */
2536 if ((strx + file_string_table_offset) < stabstr_size)
2537 printf (" %s", &strtab[strx + file_string_table_offset]);
2543 *string_offset_ptr = next_file_string_table_offset;
2548 const char * section_name;
2549 const char * string_section_name;
2550 unsigned string_offset;
2555 find_stabs_section (bfd *abfd, asection *section, void *names)
2558 stab_section_names * sought = (stab_section_names *) names;
2560 /* Check for section names for which stabsect_name is a prefix, to
2561 handle .stab.N, etc. */
2562 len = strlen (sought->section_name);
2564 /* If the prefix matches, and the files section name ends with a
2565 nul or a digit, then we match. I.e., we want either an exact
2566 match or a section followed by a number. */
2567 if (strncmp (sought->section_name, section->name, len) == 0
2568 && (section->name[len] == 0
2569 || (section->name[len] == '.' && ISDIGIT (section->name[len + 1]))))
2572 strtab = read_section_stabs (abfd, sought->string_section_name,
2577 stabs = (bfd_byte *) read_section_stabs (abfd, section->name,
2580 print_section_stabs (abfd, section->name, &sought->string_offset);
2586 dump_stabs_section (bfd *abfd, char *stabsect_name, char *strsect_name)
2588 stab_section_names s;
2590 s.section_name = stabsect_name;
2591 s.string_section_name = strsect_name;
2592 s.string_offset = 0;
2594 bfd_map_over_sections (abfd, find_stabs_section, & s);
2600 /* Dump the any sections containing stabs debugging information. */
2603 dump_stabs (bfd *abfd)
2605 dump_stabs_section (abfd, ".stab", ".stabstr");
2606 dump_stabs_section (abfd, ".stab.excl", ".stab.exclstr");
2607 dump_stabs_section (abfd, ".stab.index", ".stab.indexstr");
2610 dump_stabs_section (abfd, "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr");
2612 dump_stabs_section (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
2616 dump_bfd_header (bfd *abfd)
2620 printf (_("architecture: %s, "),
2621 bfd_printable_arch_mach (bfd_get_arch (abfd),
2622 bfd_get_mach (abfd)));
2623 printf (_("flags 0x%08x:\n"), abfd->flags & ~BFD_FLAGS_FOR_BFD_USE_MASK);
2625 #define PF(x, y) if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
2626 PF (HAS_RELOC, "HAS_RELOC");
2627 PF (EXEC_P, "EXEC_P");
2628 PF (HAS_LINENO, "HAS_LINENO");
2629 PF (HAS_DEBUG, "HAS_DEBUG");
2630 PF (HAS_SYMS, "HAS_SYMS");
2631 PF (HAS_LOCALS, "HAS_LOCALS");
2632 PF (DYNAMIC, "DYNAMIC");
2633 PF (WP_TEXT, "WP_TEXT");
2634 PF (D_PAGED, "D_PAGED");
2635 PF (BFD_IS_RELAXABLE, "BFD_IS_RELAXABLE");
2636 printf (_("\nstart address 0x"));
2637 bfd_printf_vma (abfd, abfd->start_address);
2643 dump_bfd_private_header (bfd *abfd)
2645 bfd_print_private_bfd_data (abfd, stdout);
2649 dump_target_specific (bfd *abfd)
2651 const struct objdump_private_desc * const *desc;
2652 struct objdump_private_option *opt;
2655 /* Find the desc. */
2656 for (desc = objdump_private_vectors; *desc != NULL; desc++)
2657 if ((*desc)->filter (abfd))
2662 non_fatal (_("option -P/--private not supported by this file"));
2666 /* Clear all options. */
2667 for (opt = (*desc)->options; opt->name; opt++)
2668 opt->selected = FALSE;
2670 /* Decode options. */
2671 b = dump_private_options;
2674 e = strchr (b, ',');
2679 for (opt = (*desc)->options; opt->name; opt++)
2680 if (strcmp (opt->name, b) == 0)
2682 opt->selected = TRUE;
2685 if (opt->name == NULL)
2686 non_fatal (_("target specific dump '%s' not supported"), b);
2697 (*desc)->dump (abfd);
2700 /* Display a section in hexadecimal format with associated characters.
2701 Each line prefixed by the zero padded address. */
2704 dump_section (bfd *abfd, asection *section, void *dummy ATTRIBUTE_UNUSED)
2707 bfd_size_type datasize;
2708 bfd_size_type addr_offset;
2709 bfd_size_type start_offset;
2710 bfd_size_type stop_offset;
2711 unsigned int opb = bfd_octets_per_byte (abfd);
2712 /* Bytes per line. */
2713 const int onaline = 16;
2718 if ((section->flags & SEC_HAS_CONTENTS) == 0)
2721 if (! process_section_p (section))
2724 if ((datasize = bfd_section_size (abfd, section)) == 0)
2727 /* Compute the address range to display. */
2728 if (start_address == (bfd_vma) -1
2729 || start_address < section->vma)
2732 start_offset = start_address - section->vma;
2734 if (stop_address == (bfd_vma) -1)
2735 stop_offset = datasize / opb;
2738 if (stop_address < section->vma)
2741 stop_offset = stop_address - section->vma;
2743 if (stop_offset > datasize / opb)
2744 stop_offset = datasize / opb;
2747 if (start_offset >= stop_offset)
2750 printf (_("Contents of section %s:"), section->name);
2751 if (display_file_offsets)
2752 printf (_(" (Starting at file offset: 0x%lx)"),
2753 (unsigned long) (section->filepos + start_offset));
2756 if (!bfd_get_full_section_contents (abfd, section, &data))
2758 non_fatal (_("Reading section failed"));
2764 bfd_sprintf_vma (abfd, buf, start_offset + section->vma);
2765 if (strlen (buf) >= sizeof (buf))
2769 while (buf[count] == '0' && buf[count+1] != '\0')
2771 count = strlen (buf) - count;
2775 bfd_sprintf_vma (abfd, buf, stop_offset + section->vma - 1);
2776 if (strlen (buf) >= sizeof (buf))
2780 while (buf[count] == '0' && buf[count+1] != '\0')
2782 count = strlen (buf) - count;
2786 for (addr_offset = start_offset;
2787 addr_offset < stop_offset; addr_offset += onaline / opb)
2791 bfd_sprintf_vma (abfd, buf, (addr_offset + section->vma));
2792 count = strlen (buf);
2793 if ((size_t) count >= sizeof (buf))
2797 while (count < width)
2802 fputs (buf + count - width, stdout);
2805 for (j = addr_offset * opb;
2806 j < addr_offset * opb + onaline; j++)
2808 if (j < stop_offset * opb)
2809 printf ("%02x", (unsigned) (data[j]));
2817 for (j = addr_offset * opb;
2818 j < addr_offset * opb + onaline; j++)
2820 if (j >= stop_offset * opb)
2823 printf ("%c", ISPRINT (data[j]) ? data[j] : '.');
2830 /* Actually display the various requested regions. */
2833 dump_data (bfd *abfd)
2835 bfd_map_over_sections (abfd, dump_section, NULL);
2838 /* Should perhaps share code and display with nm? */
2841 dump_symbols (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean dynamic)
2850 max_count = dynsymcount;
2851 printf ("DYNAMIC SYMBOL TABLE:\n");
2856 max_count = symcount;
2857 printf ("SYMBOL TABLE:\n");
2861 printf (_("no symbols\n"));
2863 for (count = 0; count < max_count; count++)
2867 if (*current == NULL)
2868 printf (_("no information for symbol number %ld\n"), count);
2870 else if ((cur_bfd = bfd_asymbol_bfd (*current)) == NULL)
2871 printf (_("could not determine the type of symbol number %ld\n"),
2874 else if (process_section_p ((* current)->section)
2875 && (dump_special_syms
2876 || !bfd_is_target_special_symbol (cur_bfd, *current)))
2878 const char *name = (*current)->name;
2880 if (do_demangle && name != NULL && *name != '\0')
2884 /* If we want to demangle the name, we demangle it
2885 here, and temporarily clobber it while calling
2886 bfd_print_symbol. FIXME: This is a gross hack. */
2887 alloc = bfd_demangle (cur_bfd, name, DMGL_ANSI | DMGL_PARAMS);
2889 (*current)->name = alloc;
2890 bfd_print_symbol (cur_bfd, stdout, *current,
2891 bfd_print_symbol_all);
2894 (*current)->name = name;
2899 bfd_print_symbol (cur_bfd, stdout, *current,
2900 bfd_print_symbol_all);
2910 dump_reloc_set (bfd *abfd, asection *sec, arelent **relpp, long relcount)
2913 char *last_filename, *last_functionname;
2914 unsigned int last_line;
2915 unsigned int last_discriminator;
2917 /* Get column headers lined up reasonably. */
2925 bfd_sprintf_vma (abfd, buf, (bfd_vma) -1);
2926 width = strlen (buf) - 7;
2928 printf ("OFFSET %*s TYPE %*s VALUE \n", width, "", 12, "");
2931 last_filename = NULL;
2932 last_functionname = NULL;
2934 last_discriminator = 0;
2936 for (p = relpp; relcount && *p != NULL; p++, relcount--)
2939 const char *filename, *functionname;
2940 unsigned int linenumber;
2941 unsigned int discriminator;
2942 const char *sym_name;
2943 const char *section_name;
2944 bfd_vma addend2 = 0;
2946 if (start_address != (bfd_vma) -1
2947 && q->address < start_address)
2949 if (stop_address != (bfd_vma) -1
2950 && q->address > stop_address)
2953 if (with_line_numbers
2955 && bfd_find_nearest_line_discriminator (abfd, sec, syms, q->address,
2956 &filename, &functionname,
2957 &linenumber, &discriminator))
2959 if (functionname != NULL
2960 && (last_functionname == NULL
2961 || strcmp (functionname, last_functionname) != 0))
2963 printf ("%s():\n", functionname);
2964 if (last_functionname != NULL)
2965 free (last_functionname);
2966 last_functionname = xstrdup (functionname);
2970 && (linenumber != last_line
2971 || (filename != NULL
2972 && last_filename != NULL
2973 && filename_cmp (filename, last_filename) != 0)
2974 || (discriminator != last_discriminator)))
2976 if (discriminator > 0)
2977 printf ("%s:%u\n", filename == NULL ? "???" : filename, linenumber);
2979 printf ("%s:%u (discriminator %u)\n", filename == NULL ? "???" : filename,
2980 linenumber, discriminator);
2981 last_line = linenumber;
2982 last_discriminator = discriminator;
2983 if (last_filename != NULL)
2984 free (last_filename);
2985 if (filename == NULL)
2986 last_filename = NULL;
2988 last_filename = xstrdup (filename);
2992 if (q->sym_ptr_ptr && *q->sym_ptr_ptr)
2994 sym_name = (*(q->sym_ptr_ptr))->name;
2995 section_name = (*(q->sym_ptr_ptr))->section->name;
3000 section_name = NULL;
3003 bfd_printf_vma (abfd, q->address);
3004 if (q->howto == NULL)
3005 printf (" *unknown* ");
3006 else if (q->howto->name)
3008 const char *name = q->howto->name;
3010 /* R_SPARC_OLO10 relocations contain two addends.
3011 But because 'arelent' lacks enough storage to
3012 store them both, the 64-bit ELF Sparc backend
3013 records this as two relocations. One R_SPARC_LO10
3014 and one R_SPARC_13, both pointing to the same
3015 address. This is merely so that we have some
3016 place to store both addend fields.
3018 Undo this transformation, otherwise the output
3019 will be confusing. */
3020 if (abfd->xvec->flavour == bfd_target_elf_flavour
3021 && elf_tdata(abfd)->elf_header->e_machine == EM_SPARCV9
3023 && !strcmp (q->howto->name, "R_SPARC_LO10"))
3025 arelent *q2 = *(p + 1);
3028 && q->address == q2->address
3029 && !strcmp (q2->howto->name, "R_SPARC_13"))
3031 name = "R_SPARC_OLO10";
3032 addend2 = q2->addend;
3036 printf (" %-16s ", name);
3039 printf (" %-16d ", q->howto->type);
3043 objdump_print_symname (abfd, NULL, *q->sym_ptr_ptr);
3047 if (section_name == NULL)
3048 section_name = "*unknown*";
3049 printf ("[%s]", section_name);
3054 bfd_signed_vma addend = q->addend;
3062 bfd_printf_vma (abfd, addend);
3067 bfd_printf_vma (abfd, addend2);
3073 if (last_filename != NULL)
3074 free (last_filename);
3075 if (last_functionname != NULL)
3076 free (last_functionname);
3080 dump_relocs_in_section (bfd *abfd,
3082 void *dummy ATTRIBUTE_UNUSED)
3088 if ( bfd_is_abs_section (section)
3089 || bfd_is_und_section (section)
3090 || bfd_is_com_section (section)
3091 || (! process_section_p (section))
3092 || ((section->flags & SEC_RELOC) == 0))
3095 relsize = bfd_get_reloc_upper_bound (abfd, section);
3097 bfd_fatal (bfd_get_filename (abfd));
3099 printf ("RELOCATION RECORDS FOR [%s]:", section->name);
3103 printf (" (none)\n\n");
3107 relpp = (arelent **) xmalloc (relsize);
3108 relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
3111 bfd_fatal (bfd_get_filename (abfd));
3112 else if (relcount == 0)
3113 printf (" (none)\n\n");
3117 dump_reloc_set (abfd, section, relpp, relcount);
3124 dump_relocs (bfd *abfd)
3126 bfd_map_over_sections (abfd, dump_relocs_in_section, NULL);
3130 dump_dynamic_relocs (bfd *abfd)
3136 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
3138 bfd_fatal (bfd_get_filename (abfd));
3140 printf ("DYNAMIC RELOCATION RECORDS");
3143 printf (" (none)\n\n");
3146 relpp = (arelent **) xmalloc (relsize);
3147 relcount = bfd_canonicalize_dynamic_reloc (abfd, relpp, dynsyms);
3150 bfd_fatal (bfd_get_filename (abfd));
3151 else if (relcount == 0)
3152 printf (" (none)\n\n");
3156 dump_reloc_set (abfd, NULL, relpp, relcount);
3163 /* Creates a table of paths, to search for source files. */
3166 add_include_path (const char *path)
3170 include_path_count++;
3171 include_paths = (const char **)
3172 xrealloc (include_paths, include_path_count * sizeof (*include_paths));
3173 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3174 if (path[1] == ':' && path[2] == 0)
3175 path = concat (path, ".", (const char *) 0);
3177 include_paths[include_path_count - 1] = path;
3181 adjust_addresses (bfd *abfd ATTRIBUTE_UNUSED,
3185 if ((section->flags & SEC_DEBUGGING) == 0)
3187 bfd_boolean *has_reloc_p = (bfd_boolean *) arg;
3188 section->vma += adjust_section_vma;
3190 section->lma += adjust_section_vma;
3194 /* Dump selected contents of ABFD. */
3197 dump_bfd (bfd *abfd)
3199 /* If we are adjusting section VMA's, change them all now. Changing
3200 the BFD information is a hack. However, we must do it, or
3201 bfd_find_nearest_line will not do the right thing. */
3202 if (adjust_section_vma != 0)
3204 bfd_boolean has_reloc = (abfd->flags & HAS_RELOC);
3205 bfd_map_over_sections (abfd, adjust_addresses, &has_reloc);
3208 if (! dump_debugging_tags && ! suppress_bfd_header)
3209 printf (_("\n%s: file format %s\n"), bfd_get_filename (abfd),
3212 print_arelt_descr (stdout, abfd, TRUE);
3213 if (dump_file_header)
3214 dump_bfd_header (abfd);
3215 if (dump_private_headers)
3216 dump_bfd_private_header (abfd);
3217 if (dump_private_options != NULL)
3218 dump_target_specific (abfd);
3219 if (! dump_debugging_tags && ! suppress_bfd_header)
3226 || dump_dwarf_section_info)
3227 syms = slurp_symtab (abfd);
3229 if (dump_section_headers)
3230 dump_headers (abfd);
3232 if (dump_dynamic_symtab || dump_dynamic_reloc_info
3233 || (disassemble && bfd_get_dynamic_symtab_upper_bound (abfd) > 0))
3234 dynsyms = slurp_dynamic_symtab (abfd);
3237 synthcount = bfd_get_synthetic_symtab (abfd, symcount, syms,
3238 dynsymcount, dynsyms, &synthsyms);
3244 dump_symbols (abfd, FALSE);
3245 if (dump_dynamic_symtab)
3246 dump_symbols (abfd, TRUE);
3247 if (dump_dwarf_section_info)
3249 if (dump_stab_section_info)
3251 if (dump_reloc_info && ! disassemble)
3253 if (dump_dynamic_reloc_info && ! disassemble)
3254 dump_dynamic_relocs (abfd);
3255 if (dump_section_contents)
3258 disassemble_data (abfd);
3264 dhandle = read_debugging_info (abfd, syms, symcount, TRUE);
3265 if (dhandle != NULL)
3267 if (!print_debugging_info (stdout, dhandle, abfd, syms,
3269 dump_debugging_tags ? TRUE : FALSE))
3271 non_fatal (_("%s: printing debugging information failed"),
3272 bfd_get_filename (abfd));
3276 /* PR 6483: If there was no STABS or IEEE debug
3277 info in the file, try DWARF instead. */
3278 else if (! dump_dwarf_section_info)
3280 dwarf_select_sections_all ();
3309 display_object_bfd (bfd *abfd)
3313 if (bfd_check_format_matches (abfd, bfd_object, &matching))
3319 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3321 nonfatal (bfd_get_filename (abfd));
3322 list_matching_formats (matching);
3327 if (bfd_get_error () != bfd_error_file_not_recognized)
3329 nonfatal (bfd_get_filename (abfd));
3333 if (bfd_check_format_matches (abfd, bfd_core, &matching))
3339 nonfatal (bfd_get_filename (abfd));
3341 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3343 list_matching_formats (matching);
3349 display_any_bfd (bfd *file, int level)
3351 /* Decompress sections unless dumping the section contents. */
3352 if (!dump_section_contents)
3353 file->flags |= BFD_DECOMPRESS;
3355 /* If the file is an archive, process all of its elements. */
3356 if (bfd_check_format (file, bfd_archive))
3359 bfd *last_arfile = NULL;
3362 printf (_("In archive %s:\n"), bfd_get_filename (file));
3364 printf (_("In nested archive %s:\n"), bfd_get_filename (file));
3368 bfd_set_error (bfd_error_no_error);
3370 arfile = bfd_openr_next_archived_file (file, arfile);
3373 if (bfd_get_error () != bfd_error_no_more_archived_files)
3374 nonfatal (bfd_get_filename (file));
3378 display_any_bfd (arfile, level + 1);
3380 if (last_arfile != NULL)
3381 bfd_close (last_arfile);
3382 last_arfile = arfile;
3385 if (last_arfile != NULL)
3386 bfd_close (last_arfile);
3389 display_object_bfd (file);
3393 display_file (char *filename, char *target)
3397 if (get_file_size (filename) < 1)
3403 file = bfd_openr (filename, target);
3406 nonfatal (filename);
3410 display_any_bfd (file, 0);
3416 main (int argc, char **argv)
3419 char *target = default_target;
3420 bfd_boolean seenflag = FALSE;
3422 #if defined (HAVE_SETLOCALE)
3423 #if defined (HAVE_LC_MESSAGES)
3424 setlocale (LC_MESSAGES, "");
3426 setlocale (LC_CTYPE, "");
3429 bindtextdomain (PACKAGE, LOCALEDIR);
3430 textdomain (PACKAGE);
3432 program_name = *argv;
3433 xmalloc_set_program_name (program_name);
3435 START_PROGRESS (program_name, 0);
3437 expandargv (&argc, &argv);
3440 set_default_bfd_target ();
3442 while ((c = getopt_long (argc, argv,
3443 "pP:ib:m:M:VvCdDlfFaHhrRtTxsSI:j:wE:zgeGW::",
3444 long_options, (int *) 0))
3450 break; /* We've been given a long option. */
3455 if (disassembler_options)
3456 /* Ignore potential memory leak for now. */
3457 disassembler_options = concat (disassembler_options, ",",
3458 optarg, (const char *) NULL);
3460 disassembler_options = optarg;
3466 display_file_offsets = TRUE;
3469 with_line_numbers = TRUE;
3478 enum demangling_styles style;
3480 style = cplus_demangle_name_to_style (optarg);
3481 if (style == unknown_demangling)
3482 fatal (_("unknown demangling style `%s'"),
3485 cplus_demangle_set_style (style);
3491 case OPTION_ADJUST_VMA:
3492 adjust_section_vma = parse_vma (optarg, "--adjust-vma");
3494 case OPTION_START_ADDRESS:
3495 start_address = parse_vma (optarg, "--start-address");
3496 if ((stop_address != (bfd_vma) -1) && stop_address <= start_address)
3497 fatal (_("error: the start address should be before the end address"));
3499 case OPTION_STOP_ADDRESS:
3500 stop_address = parse_vma (optarg, "--stop-address");
3501 if ((start_address != (bfd_vma) -1) && stop_address <= start_address)
3502 fatal (_("error: the stop address should be after the start address"));
3506 prefix_length = strlen (prefix);
3507 /* Remove an unnecessary trailing '/' */
3508 while (IS_DIR_SEPARATOR (prefix[prefix_length - 1]))
3511 case OPTION_PREFIX_STRIP:
3512 prefix_strip = atoi (optarg);
3513 if (prefix_strip < 0)
3514 fatal (_("error: prefix strip must be non-negative"));
3516 case OPTION_INSN_WIDTH:
3517 insn_width = strtoul (optarg, NULL, 0);
3518 if (insn_width <= 0)
3519 fatal (_("error: instruction width must be positive"));
3522 if (strcmp (optarg, "B") == 0)
3523 endian = BFD_ENDIAN_BIG;
3524 else if (strcmp (optarg, "L") == 0)
3525 endian = BFD_ENDIAN_LITTLE;
3528 nonfatal (_("unrecognized -E option"));
3533 if (strncmp (optarg, "big", strlen (optarg)) == 0)
3534 endian = BFD_ENDIAN_BIG;
3535 else if (strncmp (optarg, "little", strlen (optarg)) == 0)
3536 endian = BFD_ENDIAN_LITTLE;
3539 non_fatal (_("unrecognized --endian type `%s'"), optarg);
3546 dump_file_header = TRUE;
3550 formats_info = TRUE;
3554 add_include_path (optarg);
3557 dump_private_headers = TRUE;
3561 dump_private_options = optarg;
3565 dump_private_headers = TRUE;
3567 dump_reloc_info = TRUE;
3568 dump_file_header = TRUE;
3569 dump_ar_hdrs = TRUE;
3570 dump_section_headers = TRUE;
3578 dump_dynamic_symtab = TRUE;
3586 disassemble_zeroes = TRUE;
3590 disassemble_all = TRUE;
3595 with_source_code = TRUE;
3604 dump_debugging_tags = 1;
3609 dump_dwarf_section_info = TRUE;
3612 dwarf_select_sections_by_letters (optarg);
3614 dwarf_select_sections_all ();
3617 dump_dwarf_section_info = TRUE;
3620 dwarf_select_sections_by_names (optarg);
3622 dwarf_select_sections_all ();
3624 case OPTION_DWARF_DEPTH:
3627 dwarf_cutoff_level = strtoul (optarg, & cp, 0);
3630 case OPTION_DWARF_START:
3633 dwarf_start_die = strtoul (optarg, & cp, 0);
3634 suppress_bfd_header = 1;
3637 case OPTION_DWARF_CHECK:
3641 dump_stab_section_info = TRUE;
3645 dump_section_contents = TRUE;
3649 dump_reloc_info = TRUE;
3653 dump_dynamic_reloc_info = TRUE;
3657 dump_ar_hdrs = TRUE;
3661 dump_section_headers = TRUE;
3666 show_version = TRUE;
3672 /* No need to set seenflag or to break - usage() does not return. */
3679 print_version ("objdump");
3685 exit_status = display_info ();
3689 display_file ("a.out", target);
3691 for (; optind < argc;)
3692 display_file (argv[optind++], target);
3697 END_PROGRESS (program_name);