1 /* objdump.c -- dump information about an object file.
2 Copyright (C) 1990-2017 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. */
60 #include "safe-ctype.h"
62 #include "libiberty.h"
64 #include "filenames.h"
73 /* Internal headers for the ELF .stab-dump code - sorry. */
74 #define BYTES_IN_WORD 32
75 #include "aout/aout64.h"
78 static int exit_status = 0;
80 static char *default_target = NULL; /* Default at runtime. */
82 /* The following variables are set based on arguments passed on the
84 static int show_version = 0; /* Show the version number. */
85 static int dump_section_contents; /* -s */
86 static int dump_section_headers; /* -h */
87 static bfd_boolean dump_file_header; /* -f */
88 static int dump_symtab; /* -t */
89 static int dump_dynamic_symtab; /* -T */
90 static int dump_reloc_info; /* -r */
91 static int dump_dynamic_reloc_info; /* -R */
92 static int dump_ar_hdrs; /* -a */
93 static int dump_private_headers; /* -p */
94 static char *dump_private_options; /* -P */
95 static int prefix_addresses; /* --prefix-addresses */
96 static int with_line_numbers; /* -l */
97 static bfd_boolean with_source_code; /* -S */
98 static int show_raw_insn; /* --show-raw-insn */
99 static int dump_dwarf_section_info; /* --dwarf */
100 static int dump_stab_section_info; /* --stabs */
101 static int do_demangle; /* -C, --demangle */
102 static bfd_boolean disassemble; /* -d */
103 static bfd_boolean disassemble_all; /* -D */
104 static int disassemble_zeroes; /* --disassemble-zeroes */
105 static bfd_boolean formats_info; /* -i */
106 static int wide_output; /* -w */
107 static int insn_width; /* --insn-width */
108 static bfd_vma start_address = (bfd_vma) -1; /* --start-address */
109 static bfd_vma stop_address = (bfd_vma) -1; /* --stop-address */
110 static int dump_debugging; /* --debugging */
111 static int dump_debugging_tags; /* --debugging-tags */
112 static int suppress_bfd_header;
113 static int dump_special_syms = 0; /* --special-syms */
114 static bfd_vma adjust_section_vma = 0; /* --adjust-vma */
115 static int file_start_context = 0; /* --file-start-context */
116 static bfd_boolean display_file_offsets;/* -F */
117 static const char *prefix; /* --prefix */
118 static int prefix_strip; /* --prefix-strip */
119 static size_t prefix_length;
121 /* A structure to record the sections mentioned in -j switches. */
124 const char * name; /* The name of the section. */
125 bfd_boolean seen; /* A flag to indicate that the section has been found in one or more input files. */
126 struct only * next; /* Pointer to the next structure in the list. */
128 /* Pointer to an array of 'only' structures.
129 This pointer is NULL if the -j switch has not been used. */
130 static struct only * only_list = NULL;
132 /* Variables for handling include file path table. */
133 static const char **include_paths;
134 static int include_path_count;
136 /* Extra info to pass to the section disassembler and address printing
138 struct objdump_disasm_info
142 bfd_boolean require_sec;
143 arelent ** dynrelbuf;
145 disassembler_ftype disassemble_fn;
149 /* Architecture to disassemble for, or default if NULL. */
150 static char *machine = NULL;
152 /* Target specific options to the disassembler. */
153 static char *disassembler_options = NULL;
155 /* Endianness to disassemble for, or default if BFD_ENDIAN_UNKNOWN. */
156 static enum bfd_endian endian = BFD_ENDIAN_UNKNOWN;
158 /* The symbol table. */
159 static asymbol **syms;
161 /* Number of symbols in `syms'. */
162 static long symcount = 0;
164 /* The sorted symbol table. */
165 static asymbol **sorted_syms;
167 /* Number of symbols in `sorted_syms'. */
168 static long sorted_symcount = 0;
170 /* The dynamic symbol table. */
171 static asymbol **dynsyms;
173 /* The synthetic symbol table. */
174 static asymbol *synthsyms;
175 static long synthcount = 0;
177 /* Number of symbols in `dynsyms'. */
178 static long dynsymcount = 0;
180 static bfd_byte *stabs;
181 static bfd_size_type stab_size;
184 static bfd_size_type stabstr_size;
186 static bfd_boolean is_relocatable = FALSE;
188 /* Handlers for -P/--private. */
189 static const struct objdump_private_desc * const objdump_private_vectors[] =
191 OBJDUMP_PRIVATE_VECTORS
195 static void usage (FILE *, int) ATTRIBUTE_NORETURN;
197 usage (FILE *stream, int status)
199 fprintf (stream, _("Usage: %s <option(s)> <file(s)>\n"), program_name);
200 fprintf (stream, _(" Display information from object <file(s)>.\n"));
201 fprintf (stream, _(" At least one of the following switches must be given:\n"));
202 fprintf (stream, _("\
203 -a, --archive-headers Display archive header information\n\
204 -f, --file-headers Display the contents of the overall file header\n\
205 -p, --private-headers Display object format specific file header contents\n\
206 -P, --private=OPT,OPT... Display object format specific contents\n\
207 -h, --[section-]headers Display the contents of the section headers\n\
208 -x, --all-headers Display the contents of all headers\n\
209 -d, --disassemble Display assembler contents of executable sections\n\
210 -D, --disassemble-all Display assembler contents of all sections\n\
211 -S, --source Intermix source code with disassembly\n\
212 -s, --full-contents Display the full contents of all sections requested\n\
213 -g, --debugging Display debug information in object file\n\
214 -e, --debugging-tags Display debug information using ctags style\n\
215 -G, --stabs Display (in raw form) any STABS info in the file\n\
216 -W[lLiaprmfFsoRt] or\n\
217 --dwarf[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,\n\
218 =frames-interp,=str,=loc,=Ranges,=pubtypes,\n\
219 =gdb_index,=trace_info,=trace_abbrev,=trace_aranges,\n\
221 Display DWARF info in the file\n\
222 -t, --syms Display the contents of the symbol table(s)\n\
223 -T, --dynamic-syms Display the contents of the dynamic symbol table\n\
224 -r, --reloc Display the relocation entries in the file\n\
225 -R, --dynamic-reloc Display the dynamic relocation entries in the file\n\
226 @<file> Read options from <file>\n\
227 -v, --version Display this program's version number\n\
228 -i, --info List object formats and architectures supported\n\
229 -H, --help Display this information\n\
233 const struct objdump_private_desc * const *desc;
235 fprintf (stream, _("\n The following switches are optional:\n"));
236 fprintf (stream, _("\
237 -b, --target=BFDNAME Specify the target object format as BFDNAME\n\
238 -m, --architecture=MACHINE Specify the target architecture as MACHINE\n\
239 -j, --section=NAME Only display information for section NAME\n\
240 -M, --disassembler-options=OPT Pass text OPT on to the disassembler\n\
241 -EB --endian=big Assume big endian format when disassembling\n\
242 -EL --endian=little Assume little endian format when disassembling\n\
243 --file-start-context Include context from start of file (with -S)\n\
244 -I, --include=DIR Add DIR to search list for source files\n\
245 -l, --line-numbers Include line numbers and filenames in output\n\
246 -F, --file-offsets Include file offsets when displaying information\n\
247 -C, --demangle[=STYLE] Decode mangled/processed symbol names\n\
248 The STYLE, if specified, can be `auto', `gnu',\n\
249 `lucid', `arm', `hp', `edg', `gnu-v3', `java'\n\
251 -w, --wide Format output for more than 80 columns\n\
252 -z, --disassemble-zeroes Do not skip blocks of zeroes when disassembling\n\
253 --start-address=ADDR Only process data whose address is >= ADDR\n\
254 --stop-address=ADDR Only process data whose address is <= ADDR\n\
255 --prefix-addresses Print complete address alongside disassembly\n\
256 --[no-]show-raw-insn Display hex alongside symbolic disassembly\n\
257 --insn-width=WIDTH Display WIDTH bytes on a single line for -d\n\
258 --adjust-vma=OFFSET Add OFFSET to all displayed section addresses\n\
259 --special-syms Include special symbols in symbol dumps\n\
260 --prefix=PREFIX Add PREFIX to absolute paths for -S\n\
261 --prefix-strip=LEVEL Strip initial directory names for -S\n"));
262 fprintf (stream, _("\
263 --dwarf-depth=N Do not display DIEs at depth N or greater\n\
264 --dwarf-start=N Display DIEs starting with N, at the same depth\n\
266 --dwarf-check Make additional dwarf internal consistency checks.\
268 list_supported_targets (program_name, stream);
269 list_supported_architectures (program_name, stream);
271 disassembler_usage (stream);
273 if (objdump_private_vectors[0] != NULL)
276 _("\nOptions supported for -P/--private switch:\n"));
277 for (desc = objdump_private_vectors; *desc != NULL; desc++)
278 (*desc)->help (stream);
281 if (REPORT_BUGS_TO[0] && status == 0)
282 fprintf (stream, _("Report bugs to %s.\n"), REPORT_BUGS_TO);
286 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
290 OPTION_START_ADDRESS,
302 static struct option long_options[]=
304 {"adjust-vma", required_argument, NULL, OPTION_ADJUST_VMA},
305 {"all-headers", no_argument, NULL, 'x'},
306 {"private-headers", no_argument, NULL, 'p'},
307 {"private", required_argument, NULL, 'P'},
308 {"architecture", required_argument, NULL, 'm'},
309 {"archive-headers", no_argument, NULL, 'a'},
310 {"debugging", no_argument, NULL, 'g'},
311 {"debugging-tags", no_argument, NULL, 'e'},
312 {"demangle", optional_argument, NULL, 'C'},
313 {"disassemble", no_argument, NULL, 'd'},
314 {"disassemble-all", no_argument, NULL, 'D'},
315 {"disassembler-options", required_argument, NULL, 'M'},
316 {"disassemble-zeroes", no_argument, NULL, 'z'},
317 {"dynamic-reloc", no_argument, NULL, 'R'},
318 {"dynamic-syms", no_argument, NULL, 'T'},
319 {"endian", required_argument, NULL, OPTION_ENDIAN},
320 {"file-headers", no_argument, NULL, 'f'},
321 {"file-offsets", no_argument, NULL, 'F'},
322 {"file-start-context", no_argument, &file_start_context, 1},
323 {"full-contents", no_argument, NULL, 's'},
324 {"headers", no_argument, NULL, 'h'},
325 {"help", no_argument, NULL, 'H'},
326 {"info", no_argument, NULL, 'i'},
327 {"line-numbers", no_argument, NULL, 'l'},
328 {"no-show-raw-insn", no_argument, &show_raw_insn, -1},
329 {"prefix-addresses", no_argument, &prefix_addresses, 1},
330 {"reloc", no_argument, NULL, 'r'},
331 {"section", required_argument, NULL, 'j'},
332 {"section-headers", no_argument, NULL, 'h'},
333 {"show-raw-insn", no_argument, &show_raw_insn, 1},
334 {"source", no_argument, NULL, 'S'},
335 {"special-syms", no_argument, &dump_special_syms, 1},
336 {"include", required_argument, NULL, 'I'},
337 {"dwarf", optional_argument, NULL, OPTION_DWARF},
338 {"stabs", no_argument, NULL, 'G'},
339 {"start-address", required_argument, NULL, OPTION_START_ADDRESS},
340 {"stop-address", required_argument, NULL, OPTION_STOP_ADDRESS},
341 {"syms", no_argument, NULL, 't'},
342 {"target", required_argument, NULL, 'b'},
343 {"version", no_argument, NULL, 'V'},
344 {"wide", no_argument, NULL, 'w'},
345 {"prefix", required_argument, NULL, OPTION_PREFIX},
346 {"prefix-strip", required_argument, NULL, OPTION_PREFIX_STRIP},
347 {"insn-width", required_argument, NULL, OPTION_INSN_WIDTH},
348 {"dwarf-depth", required_argument, 0, OPTION_DWARF_DEPTH},
349 {"dwarf-start", required_argument, 0, OPTION_DWARF_START},
350 {"dwarf-check", no_argument, 0, OPTION_DWARF_CHECK},
351 {0, no_argument, 0, 0}
355 nonfatal (const char *msg)
361 /* Returns TRUE if the specified section should be dumped. */
364 process_section_p (asection * section)
368 if (only_list == NULL)
371 for (only = only_list; only; only = only->next)
372 if (strcmp (only->name, section->name) == 0)
381 /* Add an entry to the 'only' list. */
384 add_only (char * name)
388 /* First check to make sure that we do not
389 already have an entry for this name. */
390 for (only = only_list; only; only = only->next)
391 if (strcmp (only->name, name) == 0)
394 only = xmalloc (sizeof * only);
397 only->next = only_list;
401 /* Release the memory used by the 'only' list.
402 PR 11225: Issue a warning message for unseen sections.
403 Only do this if none of the sections were seen. This is mainly to support
404 tools like the GAS testsuite where an object file is dumped with a list of
405 generic section names known to be present in a range of different file
409 free_only_list (void)
411 bfd_boolean at_least_one_seen = FALSE;
415 if (only_list == NULL)
418 for (only = only_list; only; only = only->next)
421 at_least_one_seen = TRUE;
425 for (only = only_list; only; only = next)
427 if (! at_least_one_seen)
429 non_fatal (_("section '%s' mentioned in a -j option, "
430 "but not found in any input file"),
441 dump_section_header (bfd *abfd, asection *section,
442 void *ignored ATTRIBUTE_UNUSED)
445 unsigned int opb = bfd_octets_per_byte (abfd);
447 /* Ignore linker created section. See elfNN_ia64_object_p in
449 if (section->flags & SEC_LINKER_CREATED)
452 /* PR 10413: Skip sections that we are ignoring. */
453 if (! process_section_p (section))
456 printf ("%3d %-13s %08lx ", section->index,
457 bfd_get_section_name (abfd, section),
458 (unsigned long) bfd_section_size (abfd, section) / opb);
459 bfd_printf_vma (abfd, bfd_get_section_vma (abfd, section));
461 bfd_printf_vma (abfd, section->lma);
462 printf (" %08lx 2**%u", (unsigned long) section->filepos,
463 bfd_get_section_alignment (abfd, section));
469 if (section->flags & x) { printf ("%s%s", comma, y); comma = ", "; }
471 PF (SEC_HAS_CONTENTS, "CONTENTS");
472 PF (SEC_ALLOC, "ALLOC");
473 PF (SEC_CONSTRUCTOR, "CONSTRUCTOR");
474 PF (SEC_LOAD, "LOAD");
475 PF (SEC_RELOC, "RELOC");
476 PF (SEC_READONLY, "READONLY");
477 PF (SEC_CODE, "CODE");
478 PF (SEC_DATA, "DATA");
480 PF (SEC_DEBUGGING, "DEBUGGING");
481 PF (SEC_NEVER_LOAD, "NEVER_LOAD");
482 PF (SEC_EXCLUDE, "EXCLUDE");
483 PF (SEC_SORT_ENTRIES, "SORT_ENTRIES");
484 if (bfd_get_arch (abfd) == bfd_arch_tic54x)
486 PF (SEC_TIC54X_BLOCK, "BLOCK");
487 PF (SEC_TIC54X_CLINK, "CLINK");
489 PF (SEC_SMALL_DATA, "SMALL_DATA");
490 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
492 PF (SEC_COFF_SHARED, "SHARED");
493 PF (SEC_COFF_NOREAD, "NOREAD");
495 else if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
496 PF (SEC_ELF_PURECODE, "PURECODE");
497 PF (SEC_THREAD_LOCAL, "THREAD_LOCAL");
498 PF (SEC_GROUP, "GROUP");
499 if (bfd_get_arch (abfd) == bfd_arch_mep)
501 PF (SEC_MEP_VLIW, "VLIW");
504 if ((section->flags & SEC_LINK_ONCE) != 0)
507 struct coff_comdat_info *comdat;
509 switch (section->flags & SEC_LINK_DUPLICATES)
513 case SEC_LINK_DUPLICATES_DISCARD:
514 ls = "LINK_ONCE_DISCARD";
516 case SEC_LINK_DUPLICATES_ONE_ONLY:
517 ls = "LINK_ONCE_ONE_ONLY";
519 case SEC_LINK_DUPLICATES_SAME_SIZE:
520 ls = "LINK_ONCE_SAME_SIZE";
522 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
523 ls = "LINK_ONCE_SAME_CONTENTS";
526 printf ("%s%s", comma, ls);
528 comdat = bfd_coff_get_comdat_section (abfd, section);
530 printf (" (COMDAT %s %ld)", comdat->name, comdat->symbol);
540 dump_headers (bfd *abfd)
542 printf (_("Sections:\n"));
545 printf (_("Idx Name Size VMA LMA File off Algn"));
547 /* With BFD64, non-ELF returns -1 and wants always 64 bit addresses. */
548 if (bfd_get_arch_size (abfd) == 32)
549 printf (_("Idx Name Size VMA LMA File off Algn"));
551 printf (_("Idx Name Size VMA LMA File off Algn"));
555 printf (_(" Flags"));
558 bfd_map_over_sections (abfd, dump_section_header, NULL);
562 slurp_symtab (bfd *abfd)
567 if (!(bfd_get_file_flags (abfd) & HAS_SYMS))
573 storage = bfd_get_symtab_upper_bound (abfd);
576 non_fatal (_("failed to read symbol table from: %s"), bfd_get_filename (abfd));
577 bfd_fatal (_("error message was"));
580 sy = (asymbol **) xmalloc (storage);
582 symcount = bfd_canonicalize_symtab (abfd, sy);
584 bfd_fatal (bfd_get_filename (abfd));
588 /* Read in the dynamic symbols. */
591 slurp_dynamic_symtab (bfd *abfd)
596 storage = bfd_get_dynamic_symtab_upper_bound (abfd);
599 if (!(bfd_get_file_flags (abfd) & DYNAMIC))
601 non_fatal (_("%s: not a dynamic object"), bfd_get_filename (abfd));
607 bfd_fatal (bfd_get_filename (abfd));
610 sy = (asymbol **) xmalloc (storage);
612 dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, sy);
614 bfd_fatal (bfd_get_filename (abfd));
618 /* Some symbol names are significant and should be kept in the
619 table of sorted symbol names, even if they are marked as
620 debugging/section symbols. */
623 is_significant_symbol_name (const char * name)
625 return strcmp (name, ".plt") == 0
626 || strcmp (name, ".got") == 0
627 || strcmp (name, ".plt.got") == 0;
630 /* Filter out (in place) symbols that are useless for disassembly.
631 COUNT is the number of elements in SYMBOLS.
632 Return the number of useful symbols. */
635 remove_useless_symbols (asymbol **symbols, long count)
637 asymbol **in_ptr = symbols, **out_ptr = symbols;
641 asymbol *sym = *in_ptr++;
643 if (sym->name == NULL || sym->name[0] == '\0')
645 if ((sym->flags & (BSF_DEBUGGING | BSF_SECTION_SYM))
646 && ! is_significant_symbol_name (sym->name))
648 if (bfd_is_und_section (sym->section)
649 || bfd_is_com_section (sym->section))
654 return out_ptr - symbols;
657 /* Sort symbols into value order. */
660 compare_symbols (const void *ap, const void *bp)
662 const asymbol *a = * (const asymbol **) ap;
663 const asymbol *b = * (const asymbol **) bp;
673 if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
675 else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
678 if (a->section > b->section)
680 else if (a->section < b->section)
683 an = bfd_asymbol_name (a);
684 bn = bfd_asymbol_name (b);
688 /* The symbols gnu_compiled and gcc2_compiled convey no real
689 information, so put them after other symbols with the same value. */
690 af = (strstr (an, "gnu_compiled") != NULL
691 || strstr (an, "gcc2_compiled") != NULL);
692 bf = (strstr (bn, "gnu_compiled") != NULL
693 || strstr (bn, "gcc2_compiled") != NULL);
700 /* We use a heuristic for the file name, to try to sort it after
701 more useful symbols. It may not work on non Unix systems, but it
702 doesn't really matter; the only difference is precisely which
703 symbol names get printed. */
705 #define file_symbol(s, sn, snl) \
706 (((s)->flags & BSF_FILE) != 0 \
707 || ((sn)[(snl) - 2] == '.' \
708 && ((sn)[(snl) - 1] == 'o' \
709 || (sn)[(snl) - 1] == 'a')))
711 af = file_symbol (a, an, anl);
712 bf = file_symbol (b, bn, bnl);
719 /* Try to sort global symbols before local symbols before function
720 symbols before debugging symbols. */
725 if ((aflags & BSF_DEBUGGING) != (bflags & BSF_DEBUGGING))
727 if ((aflags & BSF_DEBUGGING) != 0)
732 if ((aflags & BSF_FUNCTION) != (bflags & BSF_FUNCTION))
734 if ((aflags & BSF_FUNCTION) != 0)
739 if ((aflags & BSF_LOCAL) != (bflags & BSF_LOCAL))
741 if ((aflags & BSF_LOCAL) != 0)
746 if ((aflags & BSF_GLOBAL) != (bflags & BSF_GLOBAL))
748 if ((aflags & BSF_GLOBAL) != 0)
754 if (bfd_get_flavour (bfd_asymbol_bfd (a)) == bfd_target_elf_flavour
755 && bfd_get_flavour (bfd_asymbol_bfd (b)) == bfd_target_elf_flavour)
760 if ((a->flags & BSF_SYNTHETIC) == 0)
761 asz = ((elf_symbol_type *) a)->internal_elf_sym.st_size;
763 if ((b->flags & BSF_SYNTHETIC) == 0)
764 bsz = ((elf_symbol_type *) b)->internal_elf_sym.st_size;
766 return asz > bsz ? -1 : 1;
769 /* Symbols that start with '.' might be section names, so sort them
770 after symbols that don't start with '.'. */
771 if (an[0] == '.' && bn[0] != '.')
773 if (an[0] != '.' && bn[0] == '.')
776 /* Finally, if we can't distinguish them in any other way, try to
777 get consistent results by sorting the symbols by name. */
778 return strcmp (an, bn);
781 /* Sort relocs into address order. */
784 compare_relocs (const void *ap, const void *bp)
786 const arelent *a = * (const arelent **) ap;
787 const arelent *b = * (const arelent **) bp;
789 if (a->address > b->address)
791 else if (a->address < b->address)
794 /* So that associated relocations tied to the same address show up
795 in the correct order, we don't do any further sorting. */
804 /* Print an address (VMA) to the output stream in INFO.
805 If SKIP_ZEROES is TRUE, omit leading zeroes. */
808 objdump_print_value (bfd_vma vma, struct disassemble_info *inf,
809 bfd_boolean skip_zeroes)
813 struct objdump_disasm_info *aux;
815 aux = (struct objdump_disasm_info *) inf->application_data;
816 bfd_sprintf_vma (aux->abfd, buf, vma);
821 for (p = buf; *p == '0'; ++p)
826 (*inf->fprintf_func) (inf->stream, "%s", p);
829 /* Print the name of a symbol. */
832 objdump_print_symname (bfd *abfd, struct disassemble_info *inf,
836 const char *name, *version_string = NULL;
837 bfd_boolean hidden = FALSE;
840 name = bfd_asymbol_name (sym);
841 if (do_demangle && name[0] != '\0')
843 /* Demangle the name. */
844 alloc = bfd_demangle (abfd, name, DMGL_ANSI | DMGL_PARAMS);
849 if ((sym->flags & BSF_SYNTHETIC) == 0)
850 version_string = bfd_get_symbol_version_string (abfd, sym, &hidden);
852 if (bfd_is_und_section (bfd_get_section (sym)))
857 (*inf->fprintf_func) (inf->stream, "%s", name);
858 if (version_string && *version_string != '\0')
859 (*inf->fprintf_func) (inf->stream, hidden ? "@%s" : "@@%s",
865 if (version_string && *version_string != '\0')
866 printf (hidden ? "@%s" : "@@%s", version_string);
873 /* Locate a symbol given a bfd and a section (from INFO->application_data),
874 and a VMA. If INFO->application_data->require_sec is TRUE, then always
875 require the symbol to be in the section. Returns NULL if there is no
876 suitable symbol. If PLACE is not NULL, then *PLACE is set to the index
877 of the symbol in sorted_syms. */
880 find_symbol_for_address (bfd_vma vma,
881 struct disassemble_info *inf,
884 /* @@ Would it speed things up to cache the last two symbols returned,
885 and maybe their address ranges? For many processors, only one memory
886 operand can be present at a time, so the 2-entry cache wouldn't be
887 constantly churned by code doing heavy memory accesses. */
889 /* Indices in `sorted_syms'. */
891 long max_count = sorted_symcount;
893 struct objdump_disasm_info *aux;
897 bfd_boolean want_section;
899 if (sorted_symcount < 1)
902 aux = (struct objdump_disasm_info *) inf->application_data;
905 opb = inf->octets_per_byte;
907 /* Perform a binary search looking for the closest symbol to the
908 required value. We are searching the range (min, max_count]. */
909 while (min + 1 < max_count)
913 thisplace = (max_count + min) / 2;
914 sym = sorted_syms[thisplace];
916 if (bfd_asymbol_value (sym) > vma)
917 max_count = thisplace;
918 else if (bfd_asymbol_value (sym) < vma)
927 /* The symbol we want is now in min, the low end of the range we
928 were searching. If there are several symbols with the same
929 value, we want the first (non-section/non-debugging) one. */
932 && (bfd_asymbol_value (sorted_syms[thisplace])
933 == bfd_asymbol_value (sorted_syms[thisplace - 1]))
934 && ((sorted_syms[thisplace - 1]->flags
935 & (BSF_SECTION_SYM | BSF_DEBUGGING)) == 0)
939 /* Prefer a symbol in the current section if we have multple symbols
940 with the same value, as can occur with overlays or zero size
943 while (min < max_count
944 && (bfd_asymbol_value (sorted_syms[min])
945 == bfd_asymbol_value (sorted_syms[thisplace])))
947 if (sorted_syms[min]->section == sec
948 && inf->symbol_is_valid (sorted_syms[min], inf))
955 return sorted_syms[thisplace];
960 /* If the file is relocatable, and the symbol could be from this
961 section, prefer a symbol from this section over symbols from
962 others, even if the other symbol's value might be closer.
964 Note that this may be wrong for some symbol references if the
965 sections have overlapping memory ranges, but in that case there's
966 no way to tell what's desired without looking at the relocation
969 Also give the target a chance to reject symbols. */
970 want_section = (aux->require_sec
971 || ((abfd->flags & HAS_RELOC) != 0
972 && vma >= bfd_get_section_vma (abfd, sec)
973 && vma < (bfd_get_section_vma (abfd, sec)
974 + bfd_section_size (abfd, sec) / opb)));
975 if ((sorted_syms[thisplace]->section != sec && want_section)
976 || ! inf->symbol_is_valid (sorted_syms[thisplace], inf))
979 long newplace = sorted_symcount;
981 for (i = min - 1; i >= 0; i--)
983 if ((sorted_syms[i]->section == sec || !want_section)
984 && inf->symbol_is_valid (sorted_syms[i], inf))
986 if (newplace == sorted_symcount)
989 if (bfd_asymbol_value (sorted_syms[i])
990 != bfd_asymbol_value (sorted_syms[newplace]))
993 /* Remember this symbol and keep searching until we reach
994 an earlier address. */
999 if (newplace != sorted_symcount)
1000 thisplace = newplace;
1003 /* We didn't find a good symbol with a smaller value.
1004 Look for one with a larger value. */
1005 for (i = thisplace + 1; i < sorted_symcount; i++)
1007 if ((sorted_syms[i]->section == sec || !want_section)
1008 && inf->symbol_is_valid (sorted_syms[i], inf))
1016 if ((sorted_syms[thisplace]->section != sec && want_section)
1017 || ! inf->symbol_is_valid (sorted_syms[thisplace], inf))
1018 /* There is no suitable symbol. */
1022 /* If we have not found an exact match for the specified address
1023 and we have dynamic relocations available, then we can produce
1024 a better result by matching a relocation to the address and
1025 using the symbol associated with that relocation. */
1027 && aux->dynrelbuf != NULL
1028 && sorted_syms[thisplace]->value != vma
1029 /* If we have matched a synthetic symbol, then stick with that. */
1030 && (sorted_syms[thisplace]->flags & BSF_SYNTHETIC) == 0)
1035 for (rel_count = aux->dynrelcount, rel_pp = aux->dynrelbuf;
1038 arelent * rel = rel_pp[rel_count];
1040 if (rel->address == vma
1041 && rel->sym_ptr_ptr != NULL
1042 /* Absolute relocations do not provide a more helpful symbolic address. */
1043 && ! bfd_is_abs_section ((* rel->sym_ptr_ptr)->section))
1046 * place = thisplace;
1047 return * rel->sym_ptr_ptr;
1050 /* We are scanning backwards, so if we go below the target address
1052 if (rel_pp[rel_count]->address < vma)
1060 return sorted_syms[thisplace];
1063 /* Print an address and the offset to the nearest symbol. */
1066 objdump_print_addr_with_sym (bfd *abfd, asection *sec, asymbol *sym,
1067 bfd_vma vma, struct disassemble_info *inf,
1068 bfd_boolean skip_zeroes)
1070 objdump_print_value (vma, inf, skip_zeroes);
1076 (*inf->fprintf_func) (inf->stream, " <%s",
1077 bfd_get_section_name (abfd, sec));
1078 secaddr = bfd_get_section_vma (abfd, sec);
1081 (*inf->fprintf_func) (inf->stream, "-0x");
1082 objdump_print_value (secaddr - vma, inf, TRUE);
1084 else if (vma > secaddr)
1086 (*inf->fprintf_func) (inf->stream, "+0x");
1087 objdump_print_value (vma - secaddr, inf, TRUE);
1089 (*inf->fprintf_func) (inf->stream, ">");
1093 (*inf->fprintf_func) (inf->stream, " <");
1095 objdump_print_symname (abfd, inf, sym);
1097 if (bfd_asymbol_value (sym) == vma)
1099 /* Undefined symbols in an executables and dynamic objects do not have
1100 a value associated with them, so it does not make sense to display
1101 an offset relative to them. Normally we would not be provided with
1102 this kind of symbol, but the target backend might choose to do so,
1103 and the code in find_symbol_for_address might return an as yet
1104 unresolved symbol associated with a dynamic reloc. */
1105 else if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC))
1106 && bfd_is_und_section (sym->section))
1108 else if (bfd_asymbol_value (sym) > vma)
1110 (*inf->fprintf_func) (inf->stream, "-0x");
1111 objdump_print_value (bfd_asymbol_value (sym) - vma, inf, TRUE);
1113 else if (vma > bfd_asymbol_value (sym))
1115 (*inf->fprintf_func) (inf->stream, "+0x");
1116 objdump_print_value (vma - bfd_asymbol_value (sym), inf, TRUE);
1119 (*inf->fprintf_func) (inf->stream, ">");
1122 if (display_file_offsets)
1123 inf->fprintf_func (inf->stream, _(" (File Offset: 0x%lx)"),
1124 (long int)(sec->filepos + (vma - sec->vma)));
1127 /* Print an address (VMA), symbolically if possible.
1128 If SKIP_ZEROES is TRUE, don't output leading zeroes. */
1131 objdump_print_addr (bfd_vma vma,
1132 struct disassemble_info *inf,
1133 bfd_boolean skip_zeroes)
1135 struct objdump_disasm_info *aux;
1136 asymbol *sym = NULL;
1137 bfd_boolean skip_find = FALSE;
1139 aux = (struct objdump_disasm_info *) inf->application_data;
1141 if (sorted_symcount < 1)
1143 (*inf->fprintf_func) (inf->stream, "0x");
1144 objdump_print_value (vma, inf, skip_zeroes);
1146 if (display_file_offsets)
1147 inf->fprintf_func (inf->stream, _(" (File Offset: 0x%lx)"),
1148 (long int)(aux->sec->filepos + (vma - aux->sec->vma)));
1152 if (aux->reloc != NULL
1153 && aux->reloc->sym_ptr_ptr != NULL
1154 && * aux->reloc->sym_ptr_ptr != NULL)
1156 sym = * aux->reloc->sym_ptr_ptr;
1158 /* Adjust the vma to the reloc. */
1159 vma += bfd_asymbol_value (sym);
1161 if (bfd_is_und_section (bfd_get_section (sym)))
1166 sym = find_symbol_for_address (vma, inf, NULL);
1168 objdump_print_addr_with_sym (aux->abfd, aux->sec, sym, vma, inf,
1172 /* Print VMA to INFO. This function is passed to the disassembler
1176 objdump_print_address (bfd_vma vma, struct disassemble_info *inf)
1178 objdump_print_addr (vma, inf, ! prefix_addresses);
1181 /* Determine if the given address has a symbol associated with it. */
1184 objdump_symbol_at_address (bfd_vma vma, struct disassemble_info * inf)
1188 sym = find_symbol_for_address (vma, inf, NULL);
1190 return (sym != NULL && (bfd_asymbol_value (sym) == vma));
1193 /* Hold the last function name and the last line number we displayed
1194 in a disassembly. */
1196 static char *prev_functionname;
1197 static unsigned int prev_line;
1198 static unsigned int prev_discriminator;
1200 /* We keep a list of all files that we have seen when doing a
1201 disassembly with source, so that we know how much of the file to
1202 display. This can be important for inlined functions. */
1204 struct print_file_list
1206 struct print_file_list *next;
1207 const char *filename;
1208 const char *modname;
1211 const char **linemap;
1214 unsigned max_printed;
1218 static struct print_file_list *print_files;
1220 /* The number of preceding context lines to show when we start
1221 displaying a file for the first time. */
1223 #define SHOW_PRECEDING_CONTEXT_LINES (5)
1225 /* Read a complete file into memory. */
1228 slurp_file (const char *fn, size_t *size)
1231 int ps = getpagesize ();
1236 int fd = open (fn, O_RDONLY | O_BINARY);
1240 if (fstat (fd, &st) < 0)
1247 msize = (*size + ps - 1) & ~(ps - 1);
1248 map = mmap (NULL, msize, PROT_READ, MAP_SHARED, fd, 0);
1249 if (map != (char *) -1L)
1255 map = (const char *) malloc (*size);
1256 if (!map || (size_t) read (fd, (char *) map, *size) != *size)
1258 free ((void *) map);
1265 #define line_map_decrease 5
1267 /* Precompute array of lines for a mapped file. */
1269 static const char **
1270 index_file (const char *map, size_t size, unsigned int *maxline)
1272 const char *p, *lstart, *end;
1273 int chars_per_line = 45; /* First iteration will use 40. */
1274 unsigned int lineno;
1275 const char **linemap = NULL;
1276 unsigned long line_map_size = 0;
1282 for (p = map; p < end; p++)
1286 if (p + 1 < end && p[1] == '\r')
1289 else if (*p == '\r')
1291 if (p + 1 < end && p[1] == '\n')
1297 /* End of line found. */
1299 if (linemap == NULL || line_map_size < lineno + 1)
1301 unsigned long newsize;
1303 chars_per_line -= line_map_decrease;
1304 if (chars_per_line <= 1)
1306 line_map_size = size / chars_per_line + 1;
1307 if (line_map_size < lineno + 1)
1308 line_map_size = lineno + 1;
1309 newsize = line_map_size * sizeof (char *);
1310 linemap = (const char **) xrealloc (linemap, newsize);
1313 linemap[lineno++] = lstart;
1321 /* Tries to open MODNAME, and if successful adds a node to print_files
1322 linked list and returns that node. Returns NULL on failure. */
1324 static struct print_file_list *
1325 try_print_file_open (const char *origname, const char *modname)
1327 struct print_file_list *p;
1329 p = (struct print_file_list *) xmalloc (sizeof (struct print_file_list));
1331 p->map = slurp_file (modname, &p->mapsize);
1338 p->linemap = index_file (p->map, p->mapsize, &p->maxline);
1341 p->filename = origname;
1342 p->modname = modname;
1343 p->next = print_files;
1349 /* If the source file, as described in the symtab, is not found
1350 try to locate it in one of the paths specified with -I
1351 If found, add location to print_files linked list. */
1353 static struct print_file_list *
1354 update_source_path (const char *filename)
1356 struct print_file_list *p;
1360 p = try_print_file_open (filename, filename);
1364 if (include_path_count == 0)
1367 /* Get the name of the file. */
1368 fname = lbasename (filename);
1370 /* If file exists under a new path, we need to add it to the list
1371 so that show_line knows about it. */
1372 for (i = 0; i < include_path_count; i++)
1374 char *modname = concat (include_paths[i], "/", fname, (const char *) 0);
1376 p = try_print_file_open (filename, modname);
1386 /* Print a source file line. */
1389 print_line (struct print_file_list *p, unsigned int linenum)
1395 if (linenum >= p->maxline)
1397 l = p->linemap [linenum];
1398 /* Test fwrite return value to quiet glibc warning. */
1399 len = strcspn (l, "\n\r");
1400 if (len == 0 || fwrite (l, len, 1, stdout) == 1)
1404 /* Print a range of source code lines. */
1407 dump_lines (struct print_file_list *p, unsigned int start, unsigned int end)
1411 while (start <= end)
1413 print_line (p, start);
1418 /* Show the line number, or the source line, in a disassembly
1422 show_line (bfd *abfd, asection *section, bfd_vma addr_offset)
1424 const char *filename;
1425 const char *functionname;
1426 unsigned int linenumber;
1427 unsigned int discriminator;
1431 if (! with_line_numbers && ! with_source_code)
1434 if (! bfd_find_nearest_line_discriminator (abfd, section, syms, addr_offset,
1435 &filename, &functionname,
1436 &linenumber, &discriminator))
1439 if (filename != NULL && *filename == '\0')
1441 if (functionname != NULL && *functionname == '\0')
1442 functionname = NULL;
1445 && IS_ABSOLUTE_PATH (filename)
1449 const char *fname = filename;
1451 path = xmalloc (prefix_length + PATH_MAX + 1);
1454 memcpy (path, prefix, prefix_length);
1455 path_up = path + prefix_length;
1457 /* Build relocated filename, stripping off leading directories
1458 from the initial filename if requested. */
1459 if (prefix_strip > 0)
1464 /* Skip selected directory levels. */
1465 for (s = fname + 1; *s != '\0' && level < prefix_strip; s++)
1466 if (IS_DIR_SEPARATOR(*s))
1473 /* Update complete filename. */
1474 strncpy (path_up, fname, PATH_MAX);
1475 path_up[PATH_MAX] = '\0';
1483 if (with_line_numbers)
1485 if (functionname != NULL
1486 && (prev_functionname == NULL
1487 || strcmp (functionname, prev_functionname) != 0))
1488 printf ("%s():\n", functionname);
1489 if (linenumber > 0 && (linenumber != prev_line ||
1490 (discriminator != prev_discriminator)))
1492 if (discriminator > 0)
1493 printf ("%s:%u (discriminator %u)\n", filename == NULL ? "???" : filename,
1494 linenumber, discriminator);
1496 printf ("%s:%u\n", filename == NULL ? "???" : filename, linenumber);
1500 if (with_source_code
1504 struct print_file_list **pp, *p;
1507 for (pp = &print_files; *pp != NULL; pp = &(*pp)->next)
1508 if (filename_cmp ((*pp)->filename, filename) == 0)
1515 filename = xstrdup (filename);
1516 p = update_source_path (filename);
1519 if (p != NULL && linenumber != p->last_line)
1521 if (file_start_context && p->first)
1525 l = linenumber - SHOW_PRECEDING_CONTEXT_LINES;
1526 if (l >= linenumber)
1528 if (p->max_printed >= l)
1530 if (p->max_printed < linenumber)
1531 l = p->max_printed + 1;
1536 dump_lines (p, l, linenumber);
1537 if (p->max_printed < linenumber)
1538 p->max_printed = linenumber;
1539 p->last_line = linenumber;
1544 if (functionname != NULL
1545 && (prev_functionname == NULL
1546 || strcmp (functionname, prev_functionname) != 0))
1548 if (prev_functionname != NULL)
1549 free (prev_functionname);
1550 prev_functionname = (char *) xmalloc (strlen (functionname) + 1);
1551 strcpy (prev_functionname, functionname);
1554 if (linenumber > 0 && linenumber != prev_line)
1555 prev_line = linenumber;
1557 if (discriminator != prev_discriminator)
1558 prev_discriminator = discriminator;
1564 /* Pseudo FILE object for strings. */
1572 /* sprintf to a "stream". */
1574 static int ATTRIBUTE_PRINTF_2
1575 objdump_sprintf (SFILE *f, const char *format, ...)
1582 size_t space = f->alloc - f->pos;
1584 va_start (args, format);
1585 n = vsnprintf (f->buffer + f->pos, space, format, args);
1591 f->alloc = (f->alloc + n) * 2;
1592 f->buffer = (char *) xrealloc (f->buffer, f->alloc);
1599 /* The number of zeroes we want to see before we start skipping them.
1600 The number is arbitrarily chosen. */
1602 #define DEFAULT_SKIP_ZEROES 8
1604 /* The number of zeroes to skip at the end of a section. If the
1605 number of zeroes at the end is between SKIP_ZEROES_AT_END and
1606 SKIP_ZEROES, they will be disassembled. If there are fewer than
1607 SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic
1608 attempt to avoid disassembling zeroes inserted by section
1611 #define DEFAULT_SKIP_ZEROES_AT_END 3
1613 /* Disassemble some data in memory between given values. */
1616 disassemble_bytes (struct disassemble_info * inf,
1617 disassembler_ftype disassemble_fn,
1620 bfd_vma start_offset,
1621 bfd_vma stop_offset,
1624 arelent ** relppend)
1626 struct objdump_disasm_info *aux;
1628 int octets_per_line;
1629 int skip_addr_chars;
1630 bfd_vma addr_offset;
1631 unsigned int opb = inf->octets_per_byte;
1632 unsigned int skip_zeroes = inf->skip_zeroes;
1633 unsigned int skip_zeroes_at_end = inf->skip_zeroes_at_end;
1637 aux = (struct objdump_disasm_info *) inf->application_data;
1641 sfile.buffer = (char *) xmalloc (sfile.alloc);
1645 octets_per_line = insn_width;
1647 octets_per_line = 4;
1649 octets_per_line = 16;
1651 /* Figure out how many characters to skip at the start of an
1652 address, to make the disassembly look nicer. We discard leading
1653 zeroes in chunks of 4, ensuring that there is always a leading
1655 skip_addr_chars = 0;
1656 if (! prefix_addresses)
1660 bfd_sprintf_vma (aux->abfd, buf, section->vma + section->size / opb);
1662 while (buf[skip_addr_chars] == '0')
1665 /* Don't discard zeros on overflow. */
1666 if (buf[skip_addr_chars] == '\0' && section->vma != 0)
1667 skip_addr_chars = 0;
1669 if (skip_addr_chars != 0)
1670 skip_addr_chars = (skip_addr_chars - 1) & -4;
1673 inf->insn_info_valid = 0;
1675 addr_offset = start_offset;
1676 while (addr_offset < stop_offset)
1679 bfd_boolean need_nl = FALSE;
1680 int previous_octets;
1682 /* Remember the length of the previous instruction. */
1683 previous_octets = octets;
1686 /* Make sure we don't use relocs from previous instructions. */
1689 /* If we see more than SKIP_ZEROES octets of zeroes, we just
1691 for (z = addr_offset * opb; z < stop_offset * opb; z++)
1694 if (! disassemble_zeroes
1695 && (inf->insn_info_valid == 0
1696 || inf->branch_delay_insns == 0)
1697 && (z - addr_offset * opb >= skip_zeroes
1698 || (z == stop_offset * opb &&
1699 z - addr_offset * opb < skip_zeroes_at_end)))
1701 /* If there are more nonzero octets to follow, we only skip
1702 zeroes in multiples of 4, to try to avoid running over
1703 the start of an instruction which happens to start with
1705 if (z != stop_offset * opb)
1706 z = addr_offset * opb + ((z - addr_offset * opb) &~ 3);
1708 octets = z - addr_offset * opb;
1710 /* If we are going to display more data, and we are displaying
1711 file offsets, then tell the user how many zeroes we skip
1712 and the file offset from where we resume dumping. */
1713 if (display_file_offsets && ((addr_offset + (octets / opb)) < stop_offset))
1714 printf ("\t... (skipping %d zeroes, resuming at file offset: 0x%lx)\n",
1716 (unsigned long) (section->filepos
1717 + (addr_offset + (octets / opb))));
1727 if (with_line_numbers || with_source_code)
1728 show_line (aux->abfd, section, addr_offset);
1730 if (! prefix_addresses)
1734 bfd_sprintf_vma (aux->abfd, buf, section->vma + addr_offset);
1735 for (s = buf + skip_addr_chars; *s == '0'; s++)
1739 printf ("%s:\t", buf + skip_addr_chars);
1743 aux->require_sec = TRUE;
1744 objdump_print_address (section->vma + addr_offset, inf);
1745 aux->require_sec = FALSE;
1752 inf->fprintf_func = (fprintf_ftype) objdump_sprintf;
1753 inf->stream = &sfile;
1754 inf->bytes_per_line = 0;
1755 inf->bytes_per_chunk = 0;
1756 inf->flags = disassemble_all ? DISASSEMBLE_DATA : 0;
1758 inf->flags |= USER_SPECIFIED_MACHINE_TYPE;
1760 if (inf->disassembler_needs_relocs
1761 && (bfd_get_file_flags (aux->abfd) & EXEC_P) == 0
1762 && (bfd_get_file_flags (aux->abfd) & DYNAMIC) == 0
1763 && *relppp < relppend)
1765 bfd_signed_vma distance_to_rel;
1767 distance_to_rel = (**relppp)->address
1768 - (rel_offset + addr_offset);
1770 /* Check to see if the current reloc is associated with
1771 the instruction that we are about to disassemble. */
1772 if (distance_to_rel == 0
1773 /* FIXME: This is wrong. We are trying to catch
1774 relocs that are addressed part way through the
1775 current instruction, as might happen with a packed
1776 VLIW instruction. Unfortunately we do not know the
1777 length of the current instruction since we have not
1778 disassembled it yet. Instead we take a guess based
1779 upon the length of the previous instruction. The
1780 proper solution is to have a new target-specific
1781 disassembler function which just returns the length
1782 of an instruction at a given address without trying
1783 to display its disassembly. */
1784 || (distance_to_rel > 0
1785 && distance_to_rel < (bfd_signed_vma) (previous_octets/ opb)))
1787 inf->flags |= INSN_HAS_RELOC;
1788 aux->reloc = **relppp;
1792 if (! disassemble_all
1793 && (section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
1794 == (SEC_CODE | SEC_HAS_CONTENTS))
1795 /* Set a stop_vma so that the disassembler will not read
1796 beyond the next symbol. We assume that symbols appear on
1797 the boundaries between instructions. We only do this when
1798 disassembling code of course, and when -D is in effect. */
1799 inf->stop_vma = section->vma + stop_offset;
1801 octets = (*disassemble_fn) (section->vma + addr_offset, inf);
1804 inf->fprintf_func = (fprintf_ftype) fprintf;
1805 inf->stream = stdout;
1806 if (insn_width == 0 && inf->bytes_per_line != 0)
1807 octets_per_line = inf->bytes_per_line;
1808 if (octets < (int) opb)
1811 printf ("%s\n", sfile.buffer);
1814 non_fatal (_("disassemble_fn returned length %d"),
1825 octets = octets_per_line;
1826 if (addr_offset + octets / opb > stop_offset)
1827 octets = (stop_offset - addr_offset) * opb;
1829 for (j = addr_offset * opb; j < addr_offset * opb + octets; ++j)
1831 if (ISPRINT (data[j]))
1832 buf[j - addr_offset * opb] = data[j];
1834 buf[j - addr_offset * opb] = '.';
1836 buf[j - addr_offset * opb] = '\0';
1839 if (prefix_addresses
1841 : show_raw_insn >= 0)
1845 /* If ! prefix_addresses and ! wide_output, we print
1846 octets_per_line octets per line. */
1848 if (pb > octets_per_line && ! prefix_addresses && ! wide_output)
1849 pb = octets_per_line;
1851 if (inf->bytes_per_chunk)
1852 bpc = inf->bytes_per_chunk;
1856 for (j = addr_offset * opb; j < addr_offset * opb + pb; j += bpc)
1860 if (bpc > 1 && inf->display_endian == BFD_ENDIAN_LITTLE)
1862 for (k = bpc - 1; k >= 0; k--)
1863 printf ("%02x", (unsigned) data[j + k]);
1868 for (k = 0; k < bpc; k++)
1869 printf ("%02x", (unsigned) data[j + k]);
1874 for (; pb < octets_per_line; pb += bpc)
1878 for (k = 0; k < bpc; k++)
1883 /* Separate raw data from instruction by extra space. */
1893 printf ("%s", sfile.buffer);
1895 if (prefix_addresses
1897 : show_raw_insn >= 0)
1905 j = addr_offset * opb + pb;
1907 bfd_sprintf_vma (aux->abfd, buf, section->vma + j / opb);
1908 for (s = buf + skip_addr_chars; *s == '0'; s++)
1912 printf ("%s:\t", buf + skip_addr_chars);
1914 pb += octets_per_line;
1917 for (; j < addr_offset * opb + pb; j += bpc)
1921 if (bpc > 1 && inf->display_endian == BFD_ENDIAN_LITTLE)
1923 for (k = bpc - 1; k >= 0; k--)
1924 printf ("%02x", (unsigned) data[j + k]);
1929 for (k = 0; k < bpc; k++)
1930 printf ("%02x", (unsigned) data[j + k]);
1943 while ((*relppp) < relppend
1944 && (**relppp)->address < rel_offset + addr_offset + octets / opb)
1946 if (dump_reloc_info || dump_dynamic_reloc_info)
1957 objdump_print_value (section->vma - rel_offset + q->address,
1960 if (q->howto == NULL)
1961 printf (": *unknown*\t");
1962 else if (q->howto->name)
1963 printf (": %s\t", q->howto->name);
1965 printf (": %d\t", q->howto->type);
1967 if (q->sym_ptr_ptr == NULL || *q->sym_ptr_ptr == NULL)
1968 printf ("*unknown*");
1971 const char *sym_name;
1973 sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
1974 if (sym_name != NULL && *sym_name != '\0')
1975 objdump_print_symname (aux->abfd, inf, *q->sym_ptr_ptr);
1980 sym_sec = bfd_get_section (*q->sym_ptr_ptr);
1981 sym_name = bfd_get_section_name (aux->abfd, sym_sec);
1982 if (sym_name == NULL || *sym_name == '\0')
1983 sym_name = "*unknown*";
1984 printf ("%s", sym_name);
1990 bfd_signed_vma addend = q->addend;
1998 objdump_print_value (addend, inf, TRUE);
2010 addr_offset += octets / opb;
2013 free (sfile.buffer);
2017 disassemble_section (bfd *abfd, asection *section, void *inf)
2019 const struct elf_backend_data * bed;
2020 bfd_vma sign_adjust = 0;
2021 struct disassemble_info * pinfo = (struct disassemble_info *) inf;
2022 struct objdump_disasm_info * paux;
2023 unsigned int opb = pinfo->octets_per_byte;
2024 bfd_byte * data = NULL;
2025 bfd_size_type datasize = 0;
2026 arelent ** rel_pp = NULL;
2027 arelent ** rel_ppstart = NULL;
2028 arelent ** rel_ppend;
2029 bfd_vma stop_offset;
2030 asymbol * sym = NULL;
2034 unsigned long addr_offset;
2036 /* Sections that do not contain machine
2037 code are not normally disassembled. */
2038 if (! disassemble_all
2039 && only_list == NULL
2040 && ((section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
2041 != (SEC_CODE | SEC_HAS_CONTENTS)))
2044 if (! process_section_p (section))
2047 datasize = bfd_get_section_size (section);
2051 if (start_address == (bfd_vma) -1
2052 || start_address < section->vma)
2055 addr_offset = start_address - section->vma;
2057 if (stop_address == (bfd_vma) -1)
2058 stop_offset = datasize / opb;
2061 if (stop_address < section->vma)
2064 stop_offset = stop_address - section->vma;
2065 if (stop_offset > datasize / opb)
2066 stop_offset = datasize / opb;
2069 if (addr_offset >= stop_offset)
2072 /* Decide which set of relocs to use. Load them if necessary. */
2073 paux = (struct objdump_disasm_info *) pinfo->application_data;
2074 if (paux->dynrelbuf && dump_dynamic_reloc_info)
2076 rel_pp = paux->dynrelbuf;
2077 rel_count = paux->dynrelcount;
2078 /* Dynamic reloc addresses are absolute, non-dynamic are section
2079 relative. REL_OFFSET specifies the reloc address corresponding
2080 to the start of this section. */
2081 rel_offset = section->vma;
2089 if ((section->flags & SEC_RELOC) != 0
2090 && (dump_reloc_info || pinfo->disassembler_needs_relocs))
2094 relsize = bfd_get_reloc_upper_bound (abfd, section);
2096 bfd_fatal (bfd_get_filename (abfd));
2100 rel_ppstart = rel_pp = (arelent **) xmalloc (relsize);
2101 rel_count = bfd_canonicalize_reloc (abfd, section, rel_pp, syms);
2103 bfd_fatal (bfd_get_filename (abfd));
2105 /* Sort the relocs by address. */
2106 qsort (rel_pp, rel_count, sizeof (arelent *), compare_relocs);
2110 rel_ppend = rel_pp + rel_count;
2112 data = (bfd_byte *) xmalloc (datasize);
2114 bfd_get_section_contents (abfd, section, data, 0, datasize);
2116 paux->sec = section;
2117 pinfo->buffer = data;
2118 pinfo->buffer_vma = section->vma;
2119 pinfo->buffer_length = datasize;
2120 pinfo->section = section;
2122 /* Skip over the relocs belonging to addresses below the
2124 while (rel_pp < rel_ppend
2125 && (*rel_pp)->address < rel_offset + addr_offset)
2128 printf (_("\nDisassembly of section %s:\n"), section->name);
2130 /* Find the nearest symbol forwards from our current position. */
2131 paux->require_sec = TRUE;
2132 sym = (asymbol *) find_symbol_for_address (section->vma + addr_offset,
2133 (struct disassemble_info *) inf,
2135 paux->require_sec = FALSE;
2137 /* PR 9774: If the target used signed addresses then we must make
2138 sure that we sign extend the value that we calculate for 'addr'
2139 in the loop below. */
2140 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
2141 && (bed = get_elf_backend_data (abfd)) != NULL
2142 && bed->sign_extend_vma)
2143 sign_adjust = (bfd_vma) 1 << (bed->s->arch_size - 1);
2145 /* Disassemble a block of instructions up to the address associated with
2146 the symbol we have just found. Then print the symbol and find the
2147 next symbol on. Repeat until we have disassembled the entire section
2148 or we have reached the end of the address range we are interested in. */
2149 while (addr_offset < stop_offset)
2153 bfd_vma nextstop_offset;
2156 addr = section->vma + addr_offset;
2157 addr = ((addr & ((sign_adjust << 1) - 1)) ^ sign_adjust) - sign_adjust;
2159 if (sym != NULL && bfd_asymbol_value (sym) <= addr)
2164 (x < sorted_symcount
2165 && (bfd_asymbol_value (sorted_syms[x]) <= addr));
2169 pinfo->symbols = sorted_syms + place;
2170 pinfo->num_symbols = x - place;
2171 pinfo->symtab_pos = place;
2175 pinfo->symbols = NULL;
2176 pinfo->num_symbols = 0;
2177 pinfo->symtab_pos = -1;
2180 if (! prefix_addresses)
2182 pinfo->fprintf_func (pinfo->stream, "\n");
2183 objdump_print_addr_with_sym (abfd, section, sym, addr,
2185 pinfo->fprintf_func (pinfo->stream, ":\n");
2188 if (sym != NULL && bfd_asymbol_value (sym) > addr)
2190 else if (sym == NULL)
2194 #define is_valid_next_sym(SYM) \
2195 ((SYM)->section == section \
2196 && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
2197 && pinfo->symbol_is_valid (SYM, pinfo))
2199 /* Search forward for the next appropriate symbol in
2200 SECTION. Note that all the symbols are sorted
2201 together into one big array, and that some sections
2202 may have overlapping addresses. */
2203 while (place < sorted_symcount
2204 && ! is_valid_next_sym (sorted_syms [place]))
2207 if (place >= sorted_symcount)
2210 nextsym = sorted_syms[place];
2213 if (sym != NULL && bfd_asymbol_value (sym) > addr)
2214 nextstop_offset = bfd_asymbol_value (sym) - section->vma;
2215 else if (nextsym == NULL)
2216 nextstop_offset = stop_offset;
2218 nextstop_offset = bfd_asymbol_value (nextsym) - section->vma;
2220 if (nextstop_offset > stop_offset
2221 || nextstop_offset <= addr_offset)
2222 nextstop_offset = stop_offset;
2224 /* If a symbol is explicitly marked as being an object
2225 rather than a function, just dump the bytes without
2226 disassembling them. */
2229 || sym->section != section
2230 || bfd_asymbol_value (sym) > addr
2231 || ((sym->flags & BSF_OBJECT) == 0
2232 && (strstr (bfd_asymbol_name (sym), "gnu_compiled")
2234 && (strstr (bfd_asymbol_name (sym), "gcc2_compiled")
2236 || (sym->flags & BSF_FUNCTION) != 0)
2241 disassemble_bytes (pinfo, paux->disassemble_fn, insns, data,
2242 addr_offset, nextstop_offset,
2243 rel_offset, &rel_pp, rel_ppend);
2245 addr_offset = nextstop_offset;
2251 if (rel_ppstart != NULL)
2255 /* Disassemble the contents of an object file. */
2258 disassemble_data (bfd *abfd)
2260 struct disassemble_info disasm_info;
2261 struct objdump_disasm_info aux;
2265 prev_functionname = NULL;
2267 prev_discriminator = 0;
2269 /* We make a copy of syms to sort. We don't want to sort syms
2270 because that will screw up the relocs. */
2271 sorted_symcount = symcount ? symcount : dynsymcount;
2272 sorted_syms = (asymbol **) xmalloc ((sorted_symcount + synthcount)
2273 * sizeof (asymbol *));
2274 memcpy (sorted_syms, symcount ? syms : dynsyms,
2275 sorted_symcount * sizeof (asymbol *));
2277 sorted_symcount = remove_useless_symbols (sorted_syms, sorted_symcount);
2279 for (i = 0; i < synthcount; ++i)
2281 sorted_syms[sorted_symcount] = synthsyms + i;
2285 /* Sort the symbols into section and symbol order. */
2286 qsort (sorted_syms, sorted_symcount, sizeof (asymbol *), compare_symbols);
2288 init_disassemble_info (&disasm_info, stdout, (fprintf_ftype) fprintf);
2290 disasm_info.application_data = (void *) &aux;
2292 aux.require_sec = FALSE;
2293 aux.dynrelbuf = NULL;
2294 aux.dynrelcount = 0;
2297 disasm_info.print_address_func = objdump_print_address;
2298 disasm_info.symbol_at_address_func = objdump_symbol_at_address;
2300 if (machine != NULL)
2302 const bfd_arch_info_type *inf = bfd_scan_arch (machine);
2305 fatal (_("can't use supplied machine %s"), machine);
2307 abfd->arch_info = inf;
2310 if (endian != BFD_ENDIAN_UNKNOWN)
2312 struct bfd_target *xvec;
2314 xvec = (struct bfd_target *) xmalloc (sizeof (struct bfd_target));
2315 memcpy (xvec, abfd->xvec, sizeof (struct bfd_target));
2316 xvec->byteorder = endian;
2320 /* Use libopcodes to locate a suitable disassembler. */
2321 aux.disassemble_fn = disassembler (abfd);
2322 if (!aux.disassemble_fn)
2324 non_fatal (_("can't disassemble for architecture %s\n"),
2325 bfd_printable_arch_mach (bfd_get_arch (abfd), 0));
2330 disasm_info.flavour = bfd_get_flavour (abfd);
2331 disasm_info.arch = bfd_get_arch (abfd);
2332 disasm_info.mach = bfd_get_mach (abfd);
2333 disasm_info.disassembler_options = disassembler_options;
2334 disasm_info.octets_per_byte = bfd_octets_per_byte (abfd);
2335 disasm_info.skip_zeroes = DEFAULT_SKIP_ZEROES;
2336 disasm_info.skip_zeroes_at_end = DEFAULT_SKIP_ZEROES_AT_END;
2337 disasm_info.disassembler_needs_relocs = FALSE;
2339 if (bfd_big_endian (abfd))
2340 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_BIG;
2341 else if (bfd_little_endian (abfd))
2342 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_LITTLE;
2344 /* ??? Aborting here seems too drastic. We could default to big or little
2346 disasm_info.endian = BFD_ENDIAN_UNKNOWN;
2348 /* Allow the target to customize the info structure. */
2349 disassemble_init_for_target (& disasm_info);
2351 /* Pre-load the dynamic relocs as we may need them during the disassembly. */
2353 long relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2355 if (relsize < 0 && dump_dynamic_reloc_info)
2356 bfd_fatal (bfd_get_filename (abfd));
2360 aux.dynrelbuf = (arelent **) xmalloc (relsize);
2361 aux.dynrelcount = bfd_canonicalize_dynamic_reloc (abfd,
2364 if (aux.dynrelcount < 0)
2365 bfd_fatal (bfd_get_filename (abfd));
2367 /* Sort the relocs by address. */
2368 qsort (aux.dynrelbuf, aux.dynrelcount, sizeof (arelent *),
2372 disasm_info.symtab = sorted_syms;
2373 disasm_info.symtab_size = sorted_symcount;
2375 bfd_map_over_sections (abfd, disassemble_section, & disasm_info);
2377 if (aux.dynrelbuf != NULL)
2378 free (aux.dynrelbuf);
2383 load_specific_debug_section (enum dwarf_section_display_enum debug,
2384 asection *sec, void *file)
2386 struct dwarf_section *section = &debug_displays [debug].section;
2387 bfd *abfd = (bfd *) file;
2390 /* If it is already loaded, do nothing. */
2391 if (section->start != NULL)
2394 section->reloc_info = NULL;
2395 section->num_relocs = 0;
2396 section->address = bfd_get_section_vma (abfd, sec);
2397 section->size = bfd_get_section_size (sec);
2398 section->start = NULL;
2399 section->user_data = sec;
2400 ret = bfd_get_full_section_contents (abfd, sec, §ion->start);
2404 free_debug_section (debug);
2405 printf (_("\nCan't get contents for section '%s'.\n"),
2410 if (is_relocatable && debug_displays [debug].relocate)
2412 bfd_cache_section_contents (sec, section->start);
2414 ret = bfd_simple_get_relocated_section_contents (abfd,
2421 free_debug_section (debug);
2422 printf (_("\nCan't get contents for section '%s'.\n"),
2429 reloc_size = bfd_get_reloc_upper_bound (abfd, sec);
2432 unsigned long reloc_count;
2435 relocs = (arelent **) xmalloc (reloc_size);
2437 reloc_count = bfd_canonicalize_reloc (abfd, sec, relocs, NULL);
2438 if (reloc_count == 0)
2442 section->reloc_info = relocs;
2443 section->num_relocs = reloc_count;
2452 reloc_at (struct dwarf_section * dsec, dwarf_vma offset)
2457 if (dsec == NULL || dsec->reloc_info == NULL)
2460 relocs = (arelent **) dsec->reloc_info;
2462 for (; (rp = * relocs) != NULL; ++ relocs)
2463 if (rp->address == offset)
2470 load_debug_section (enum dwarf_section_display_enum debug, void *file)
2472 struct dwarf_section *section = &debug_displays [debug].section;
2473 bfd *abfd = (bfd *) file;
2476 /* If it is already loaded, do nothing. */
2477 if (section->start != NULL)
2480 /* Locate the debug section. */
2481 sec = bfd_get_section_by_name (abfd, section->uncompressed_name);
2483 section->name = section->uncompressed_name;
2486 sec = bfd_get_section_by_name (abfd, section->compressed_name);
2488 section->name = section->compressed_name;
2493 return load_specific_debug_section (debug, sec, file);
2497 free_debug_section (enum dwarf_section_display_enum debug)
2499 struct dwarf_section *section = &debug_displays [debug].section;
2501 if (section->start == NULL)
2504 /* PR 17512: file: 0f67f69d. */
2505 if (section->user_data != NULL)
2507 asection * sec = (asection *) section->user_data;
2509 /* If we are freeing contents that are also pointed to by the BFD
2510 library's section structure then make sure to update those pointers
2511 too. Otherwise, the next time we try to load data for this section
2512 we can end up using a stale pointer. */
2513 if (section->start == sec->contents)
2515 sec->contents = NULL;
2516 sec->flags &= ~ SEC_IN_MEMORY;
2517 sec->compress_status = COMPRESS_SECTION_NONE;
2521 free ((char *) section->start);
2522 section->start = NULL;
2523 section->address = 0;
2528 dump_dwarf_section (bfd *abfd, asection *section,
2529 void *arg ATTRIBUTE_UNUSED)
2531 const char *name = bfd_get_section_name (abfd, section);
2535 if (CONST_STRNEQ (name, ".gnu.linkonce.wi."))
2536 match = ".debug_info";
2540 for (i = 0; i < max; i++)
2541 if ((strcmp (debug_displays [i].section.uncompressed_name, match) == 0
2542 || strcmp (debug_displays [i].section.compressed_name, match) == 0)
2543 && debug_displays [i].enabled != NULL
2544 && *debug_displays [i].enabled)
2546 struct dwarf_section *sec = &debug_displays [i].section;
2548 if (strcmp (sec->uncompressed_name, match) == 0)
2549 sec->name = sec->uncompressed_name;
2551 sec->name = sec->compressed_name;
2552 if (load_specific_debug_section ((enum dwarf_section_display_enum) i,
2555 debug_displays [i].display (sec, abfd);
2557 if (i != info && i != abbrev)
2558 free_debug_section ((enum dwarf_section_display_enum) i);
2564 /* Dump the dwarf debugging information. */
2567 dump_dwarf (bfd *abfd)
2569 is_relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2571 eh_addr_size = bfd_arch_bits_per_address (abfd) / 8;
2573 if (bfd_big_endian (abfd))
2574 byte_get = byte_get_big_endian;
2575 else if (bfd_little_endian (abfd))
2576 byte_get = byte_get_little_endian;
2578 /* PR 17512: file: objdump-s-endless-loop.tekhex. */
2580 warn (_("File %s does not contain any dwarf debug information\n"),
2581 bfd_get_filename (abfd));
2585 switch (bfd_get_arch (abfd))
2588 switch (bfd_get_mach (abfd))
2590 case bfd_mach_x86_64:
2591 case bfd_mach_x86_64_intel_syntax:
2592 case bfd_mach_x86_64_nacl:
2593 case bfd_mach_x64_32:
2594 case bfd_mach_x64_32_intel_syntax:
2595 case bfd_mach_x64_32_nacl:
2596 init_dwarf_regnames_x86_64 ();
2600 init_dwarf_regnames_i386 ();
2605 case bfd_arch_iamcu:
2606 init_dwarf_regnames_iamcu ();
2609 case bfd_arch_aarch64:
2610 init_dwarf_regnames_aarch64();
2614 init_dwarf_regnames_s390 ();
2621 bfd_map_over_sections (abfd, dump_dwarf_section, NULL);
2623 free_debug_memory ();
2626 /* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
2627 it. Return NULL on failure. */
2630 read_section_stabs (bfd *abfd, const char *sect_name, bfd_size_type *size_ptr)
2636 stabsect = bfd_get_section_by_name (abfd, sect_name);
2637 if (stabsect == NULL)
2639 printf (_("No %s section present\n\n"), sect_name);
2643 size = bfd_section_size (abfd, stabsect);
2644 contents = (char *) xmalloc (size);
2646 if (! bfd_get_section_contents (abfd, stabsect, contents, 0, size))
2648 non_fatal (_("reading %s section of %s failed: %s"),
2649 sect_name, bfd_get_filename (abfd),
2650 bfd_errmsg (bfd_get_error ()));
2661 /* Stabs entries use a 12 byte format:
2662 4 byte string table index
2664 1 byte stab other field
2665 2 byte stab desc field
2667 FIXME: This will have to change for a 64 bit object format. */
2669 #define STRDXOFF (0)
2671 #define OTHEROFF (5)
2674 #define STABSIZE (12)
2676 /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
2677 using string table section STRSECT_NAME (in `strtab'). */
2680 print_section_stabs (bfd *abfd,
2681 const char *stabsect_name,
2682 unsigned *string_offset_ptr)
2685 unsigned file_string_table_offset = 0;
2686 unsigned next_file_string_table_offset = *string_offset_ptr;
2687 bfd_byte *stabp, *stabs_end;
2690 stabs_end = stabp + stab_size;
2692 printf (_("Contents of %s section:\n\n"), stabsect_name);
2693 printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
2695 /* Loop through all symbols and print them.
2697 We start the index at -1 because there is a dummy symbol on
2698 the front of stabs-in-{coff,elf} sections that supplies sizes. */
2699 for (i = -1; stabp <= stabs_end - STABSIZE; stabp += STABSIZE, i++)
2703 unsigned char type, other;
2704 unsigned short desc;
2707 strx = bfd_h_get_32 (abfd, stabp + STRDXOFF);
2708 type = bfd_h_get_8 (abfd, stabp + TYPEOFF);
2709 other = bfd_h_get_8 (abfd, stabp + OTHEROFF);
2710 desc = bfd_h_get_16 (abfd, stabp + DESCOFF);
2711 value = bfd_h_get_32 (abfd, stabp + VALOFF);
2713 printf ("\n%-6d ", i);
2714 /* Either print the stab name, or, if unnamed, print its number
2715 again (makes consistent formatting for tools like awk). */
2716 name = bfd_get_stab_name (type);
2718 printf ("%-6s", name);
2719 else if (type == N_UNDF)
2722 printf ("%-6d", type);
2723 printf (" %-6d %-6d ", other, desc);
2724 bfd_printf_vma (abfd, value);
2725 printf (" %-6lu", strx);
2727 /* Symbols with type == 0 (N_UNDF) specify the length of the
2728 string table associated with this file. We use that info
2729 to know how to relocate the *next* file's string table indices. */
2732 file_string_table_offset = next_file_string_table_offset;
2733 next_file_string_table_offset += value;
2737 bfd_size_type amt = strx + file_string_table_offset;
2739 /* Using the (possibly updated) string table offset, print the
2740 string (if any) associated with this symbol. */
2741 if (amt < stabstr_size)
2742 /* PR 17512: file: 079-79389-0.001:0.1. */
2743 printf (" %.*s", (int)(stabstr_size - amt), strtab + amt);
2749 *string_offset_ptr = next_file_string_table_offset;
2754 const char * section_name;
2755 const char * string_section_name;
2756 unsigned string_offset;
2761 find_stabs_section (bfd *abfd, asection *section, void *names)
2764 stab_section_names * sought = (stab_section_names *) names;
2766 /* Check for section names for which stabsect_name is a prefix, to
2767 handle .stab.N, etc. */
2768 len = strlen (sought->section_name);
2770 /* If the prefix matches, and the files section name ends with a
2771 nul or a digit, then we match. I.e., we want either an exact
2772 match or a section followed by a number. */
2773 if (strncmp (sought->section_name, section->name, len) == 0
2774 && (section->name[len] == 0
2775 || (section->name[len] == '.' && ISDIGIT (section->name[len + 1]))))
2778 strtab = read_section_stabs (abfd, sought->string_section_name,
2783 stabs = (bfd_byte *) read_section_stabs (abfd, section->name,
2786 print_section_stabs (abfd, section->name, &sought->string_offset);
2792 dump_stabs_section (bfd *abfd, char *stabsect_name, char *strsect_name)
2794 stab_section_names s;
2796 s.section_name = stabsect_name;
2797 s.string_section_name = strsect_name;
2798 s.string_offset = 0;
2800 bfd_map_over_sections (abfd, find_stabs_section, & s);
2806 /* Dump the any sections containing stabs debugging information. */
2809 dump_stabs (bfd *abfd)
2811 dump_stabs_section (abfd, ".stab", ".stabstr");
2812 dump_stabs_section (abfd, ".stab.excl", ".stab.exclstr");
2813 dump_stabs_section (abfd, ".stab.index", ".stab.indexstr");
2816 dump_stabs_section (abfd, "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr");
2818 dump_stabs_section (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
2822 dump_bfd_header (bfd *abfd)
2826 printf (_("architecture: %s, "),
2827 bfd_printable_arch_mach (bfd_get_arch (abfd),
2828 bfd_get_mach (abfd)));
2829 printf (_("flags 0x%08x:\n"), abfd->flags & ~BFD_FLAGS_FOR_BFD_USE_MASK);
2831 #define PF(x, y) if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
2832 PF (HAS_RELOC, "HAS_RELOC");
2833 PF (EXEC_P, "EXEC_P");
2834 PF (HAS_LINENO, "HAS_LINENO");
2835 PF (HAS_DEBUG, "HAS_DEBUG");
2836 PF (HAS_SYMS, "HAS_SYMS");
2837 PF (HAS_LOCALS, "HAS_LOCALS");
2838 PF (DYNAMIC, "DYNAMIC");
2839 PF (WP_TEXT, "WP_TEXT");
2840 PF (D_PAGED, "D_PAGED");
2841 PF (BFD_IS_RELAXABLE, "BFD_IS_RELAXABLE");
2842 printf (_("\nstart address 0x"));
2843 bfd_printf_vma (abfd, abfd->start_address);
2849 dump_bfd_private_header (bfd *abfd)
2851 bfd_print_private_bfd_data (abfd, stdout);
2855 dump_target_specific (bfd *abfd)
2857 const struct objdump_private_desc * const *desc;
2858 struct objdump_private_option *opt;
2861 /* Find the desc. */
2862 for (desc = objdump_private_vectors; *desc != NULL; desc++)
2863 if ((*desc)->filter (abfd))
2868 non_fatal (_("option -P/--private not supported by this file"));
2872 /* Clear all options. */
2873 for (opt = (*desc)->options; opt->name; opt++)
2874 opt->selected = FALSE;
2876 /* Decode options. */
2877 b = dump_private_options;
2880 e = strchr (b, ',');
2885 for (opt = (*desc)->options; opt->name; opt++)
2886 if (strcmp (opt->name, b) == 0)
2888 opt->selected = TRUE;
2891 if (opt->name == NULL)
2892 non_fatal (_("target specific dump '%s' not supported"), b);
2903 (*desc)->dump (abfd);
2906 /* Display a section in hexadecimal format with associated characters.
2907 Each line prefixed by the zero padded address. */
2910 dump_section (bfd *abfd, asection *section, void *dummy ATTRIBUTE_UNUSED)
2913 bfd_size_type datasize;
2914 bfd_vma addr_offset;
2915 bfd_vma start_offset;
2916 bfd_vma stop_offset;
2917 unsigned int opb = bfd_octets_per_byte (abfd);
2918 /* Bytes per line. */
2919 const int onaline = 16;
2924 if ((section->flags & SEC_HAS_CONTENTS) == 0)
2927 if (! process_section_p (section))
2930 if ((datasize = bfd_section_size (abfd, section)) == 0)
2933 /* Compute the address range to display. */
2934 if (start_address == (bfd_vma) -1
2935 || start_address < section->vma)
2938 start_offset = start_address - section->vma;
2940 if (stop_address == (bfd_vma) -1)
2941 stop_offset = datasize / opb;
2944 if (stop_address < section->vma)
2947 stop_offset = stop_address - section->vma;
2949 if (stop_offset > datasize / opb)
2950 stop_offset = datasize / opb;
2953 if (start_offset >= stop_offset)
2956 printf (_("Contents of section %s:"), section->name);
2957 if (display_file_offsets)
2958 printf (_(" (Starting at file offset: 0x%lx)"),
2959 (unsigned long) (section->filepos + start_offset));
2962 if (!bfd_get_full_section_contents (abfd, section, &data))
2964 non_fatal (_("Reading section %s failed because: %s"),
2965 section->name, bfd_errmsg (bfd_get_error ()));
2971 bfd_sprintf_vma (abfd, buf, start_offset + section->vma);
2972 if (strlen (buf) >= sizeof (buf))
2976 while (buf[count] == '0' && buf[count+1] != '\0')
2978 count = strlen (buf) - count;
2982 bfd_sprintf_vma (abfd, buf, stop_offset + section->vma - 1);
2983 if (strlen (buf) >= sizeof (buf))
2987 while (buf[count] == '0' && buf[count+1] != '\0')
2989 count = strlen (buf) - count;
2993 for (addr_offset = start_offset;
2994 addr_offset < stop_offset; addr_offset += onaline / opb)
2998 bfd_sprintf_vma (abfd, buf, (addr_offset + section->vma));
2999 count = strlen (buf);
3000 if ((size_t) count >= sizeof (buf))
3004 while (count < width)
3009 fputs (buf + count - width, stdout);
3012 for (j = addr_offset * opb;
3013 j < addr_offset * opb + onaline; j++)
3015 if (j < stop_offset * opb)
3016 printf ("%02x", (unsigned) (data[j]));
3024 for (j = addr_offset * opb;
3025 j < addr_offset * opb + onaline; j++)
3027 if (j >= stop_offset * opb)
3030 printf ("%c", ISPRINT (data[j]) ? data[j] : '.');
3037 /* Actually display the various requested regions. */
3040 dump_data (bfd *abfd)
3042 bfd_map_over_sections (abfd, dump_section, NULL);
3045 /* Should perhaps share code and display with nm? */
3048 dump_symbols (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean dynamic)
3057 max_count = dynsymcount;
3058 printf ("DYNAMIC SYMBOL TABLE:\n");
3063 max_count = symcount;
3064 printf ("SYMBOL TABLE:\n");
3068 printf (_("no symbols\n"));
3070 for (count = 0; count < max_count; count++)
3074 if (*current == NULL)
3075 printf (_("no information for symbol number %ld\n"), count);
3077 else if ((cur_bfd = bfd_asymbol_bfd (*current)) == NULL)
3078 printf (_("could not determine the type of symbol number %ld\n"),
3081 else if (process_section_p ((* current)->section)
3082 && (dump_special_syms
3083 || !bfd_is_target_special_symbol (cur_bfd, *current)))
3085 const char *name = (*current)->name;
3087 if (do_demangle && name != NULL && *name != '\0')
3091 /* If we want to demangle the name, we demangle it
3092 here, and temporarily clobber it while calling
3093 bfd_print_symbol. FIXME: This is a gross hack. */
3094 alloc = bfd_demangle (cur_bfd, name, DMGL_ANSI | DMGL_PARAMS);
3096 (*current)->name = alloc;
3097 bfd_print_symbol (cur_bfd, stdout, *current,
3098 bfd_print_symbol_all);
3101 (*current)->name = name;
3106 bfd_print_symbol (cur_bfd, stdout, *current,
3107 bfd_print_symbol_all);
3117 dump_reloc_set (bfd *abfd, asection *sec, arelent **relpp, long relcount)
3120 char *last_filename, *last_functionname;
3121 unsigned int last_line;
3122 unsigned int last_discriminator;
3124 /* Get column headers lined up reasonably. */
3132 bfd_sprintf_vma (abfd, buf, (bfd_vma) -1);
3133 width = strlen (buf) - 7;
3135 printf ("OFFSET %*s TYPE %*s VALUE \n", width, "", 12, "");
3138 last_filename = NULL;
3139 last_functionname = NULL;
3141 last_discriminator = 0;
3143 for (p = relpp; relcount && *p != NULL; p++, relcount--)
3146 const char *filename, *functionname;
3147 unsigned int linenumber;
3148 unsigned int discriminator;
3149 const char *sym_name;
3150 const char *section_name;
3151 bfd_vma addend2 = 0;
3153 if (start_address != (bfd_vma) -1
3154 && q->address < start_address)
3156 if (stop_address != (bfd_vma) -1
3157 && q->address > stop_address)
3160 if (with_line_numbers
3162 && bfd_find_nearest_line_discriminator (abfd, sec, syms, q->address,
3163 &filename, &functionname,
3164 &linenumber, &discriminator))
3166 if (functionname != NULL
3167 && (last_functionname == NULL
3168 || strcmp (functionname, last_functionname) != 0))
3170 printf ("%s():\n", functionname);
3171 if (last_functionname != NULL)
3172 free (last_functionname);
3173 last_functionname = xstrdup (functionname);
3177 && (linenumber != last_line
3178 || (filename != NULL
3179 && last_filename != NULL
3180 && filename_cmp (filename, last_filename) != 0)
3181 || (discriminator != last_discriminator)))
3183 if (discriminator > 0)
3184 printf ("%s:%u\n", filename == NULL ? "???" : filename, linenumber);
3186 printf ("%s:%u (discriminator %u)\n", filename == NULL ? "???" : filename,
3187 linenumber, discriminator);
3188 last_line = linenumber;
3189 last_discriminator = discriminator;
3190 if (last_filename != NULL)
3191 free (last_filename);
3192 if (filename == NULL)
3193 last_filename = NULL;
3195 last_filename = xstrdup (filename);
3199 if (q->sym_ptr_ptr && *q->sym_ptr_ptr)
3201 sym_name = (*(q->sym_ptr_ptr))->name;
3202 section_name = (*(q->sym_ptr_ptr))->section->name;
3207 section_name = NULL;
3210 bfd_printf_vma (abfd, q->address);
3211 if (q->howto == NULL)
3212 printf (" *unknown* ");
3213 else if (q->howto->name)
3215 const char *name = q->howto->name;
3217 /* R_SPARC_OLO10 relocations contain two addends.
3218 But because 'arelent' lacks enough storage to
3219 store them both, the 64-bit ELF Sparc backend
3220 records this as two relocations. One R_SPARC_LO10
3221 and one R_SPARC_13, both pointing to the same
3222 address. This is merely so that we have some
3223 place to store both addend fields.
3225 Undo this transformation, otherwise the output
3226 will be confusing. */
3227 if (abfd->xvec->flavour == bfd_target_elf_flavour
3228 && elf_tdata(abfd)->elf_header->e_machine == EM_SPARCV9
3230 && !strcmp (q->howto->name, "R_SPARC_LO10"))
3232 arelent *q2 = *(p + 1);
3235 && q->address == q2->address
3236 && !strcmp (q2->howto->name, "R_SPARC_13"))
3238 name = "R_SPARC_OLO10";
3239 addend2 = q2->addend;
3243 printf (" %-16s ", name);
3246 printf (" %-16d ", q->howto->type);
3250 objdump_print_symname (abfd, NULL, *q->sym_ptr_ptr);
3254 if (section_name == NULL)
3255 section_name = "*unknown*";
3256 printf ("[%s]", section_name);
3261 bfd_signed_vma addend = q->addend;
3269 bfd_printf_vma (abfd, addend);
3274 bfd_printf_vma (abfd, addend2);
3280 if (last_filename != NULL)
3281 free (last_filename);
3282 if (last_functionname != NULL)
3283 free (last_functionname);
3287 dump_relocs_in_section (bfd *abfd,
3289 void *dummy ATTRIBUTE_UNUSED)
3295 if ( bfd_is_abs_section (section)
3296 || bfd_is_und_section (section)
3297 || bfd_is_com_section (section)
3298 || (! process_section_p (section))
3299 || ((section->flags & SEC_RELOC) == 0))
3302 relsize = bfd_get_reloc_upper_bound (abfd, section);
3304 bfd_fatal (bfd_get_filename (abfd));
3306 printf ("RELOCATION RECORDS FOR [%s]:", section->name);
3310 printf (" (none)\n\n");
3314 relpp = (arelent **) xmalloc (relsize);
3315 relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
3320 non_fatal (_("failed to read relocs in: %s"), bfd_get_filename (abfd));
3321 bfd_fatal (_("error message was"));
3323 else if (relcount == 0)
3324 printf (" (none)\n\n");
3328 dump_reloc_set (abfd, section, relpp, relcount);
3335 dump_relocs (bfd *abfd)
3337 bfd_map_over_sections (abfd, dump_relocs_in_section, NULL);
3341 dump_dynamic_relocs (bfd *abfd)
3347 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
3349 bfd_fatal (bfd_get_filename (abfd));
3351 printf ("DYNAMIC RELOCATION RECORDS");
3354 printf (" (none)\n\n");
3357 relpp = (arelent **) xmalloc (relsize);
3358 relcount = bfd_canonicalize_dynamic_reloc (abfd, relpp, dynsyms);
3361 bfd_fatal (bfd_get_filename (abfd));
3362 else if (relcount == 0)
3363 printf (" (none)\n\n");
3367 dump_reloc_set (abfd, NULL, relpp, relcount);
3374 /* Creates a table of paths, to search for source files. */
3377 add_include_path (const char *path)
3381 include_path_count++;
3382 include_paths = (const char **)
3383 xrealloc (include_paths, include_path_count * sizeof (*include_paths));
3384 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3385 if (path[1] == ':' && path[2] == 0)
3386 path = concat (path, ".", (const char *) 0);
3388 include_paths[include_path_count - 1] = path;
3392 adjust_addresses (bfd *abfd ATTRIBUTE_UNUSED,
3396 if ((section->flags & SEC_DEBUGGING) == 0)
3398 bfd_boolean *has_reloc_p = (bfd_boolean *) arg;
3399 section->vma += adjust_section_vma;
3401 section->lma += adjust_section_vma;
3405 /* Dump selected contents of ABFD. */
3408 dump_bfd (bfd *abfd)
3410 /* If we are adjusting section VMA's, change them all now. Changing
3411 the BFD information is a hack. However, we must do it, or
3412 bfd_find_nearest_line will not do the right thing. */
3413 if (adjust_section_vma != 0)
3415 bfd_boolean has_reloc = (abfd->flags & HAS_RELOC);
3416 bfd_map_over_sections (abfd, adjust_addresses, &has_reloc);
3419 if (! dump_debugging_tags && ! suppress_bfd_header)
3420 printf (_("\n%s: file format %s\n"), bfd_get_filename (abfd),
3423 print_arelt_descr (stdout, abfd, TRUE);
3424 if (dump_file_header)
3425 dump_bfd_header (abfd);
3426 if (dump_private_headers)
3427 dump_bfd_private_header (abfd);
3428 if (dump_private_options != NULL)
3429 dump_target_specific (abfd);
3430 if (! dump_debugging_tags && ! suppress_bfd_header)
3437 || dump_dwarf_section_info)
3438 syms = slurp_symtab (abfd);
3440 if (dump_section_headers)
3441 dump_headers (abfd);
3443 if (dump_dynamic_symtab || dump_dynamic_reloc_info
3444 || (disassemble && bfd_get_dynamic_symtab_upper_bound (abfd) > 0))
3445 dynsyms = slurp_dynamic_symtab (abfd);
3448 synthcount = bfd_get_synthetic_symtab (abfd, symcount, syms,
3449 dynsymcount, dynsyms, &synthsyms);
3455 dump_symbols (abfd, FALSE);
3456 if (dump_dynamic_symtab)
3457 dump_symbols (abfd, TRUE);
3458 if (dump_dwarf_section_info)
3460 if (dump_stab_section_info)
3462 if (dump_reloc_info && ! disassemble)
3464 if (dump_dynamic_reloc_info && ! disassemble)
3465 dump_dynamic_relocs (abfd);
3466 if (dump_section_contents)
3469 disassemble_data (abfd);
3475 dhandle = read_debugging_info (abfd, syms, symcount, TRUE);
3476 if (dhandle != NULL)
3478 if (!print_debugging_info (stdout, dhandle, abfd, syms,
3480 dump_debugging_tags ? TRUE : FALSE))
3482 non_fatal (_("%s: printing debugging information failed"),
3483 bfd_get_filename (abfd));
3487 /* PR 6483: If there was no STABS or IEEE debug
3488 info in the file, try DWARF instead. */
3489 else if (! dump_dwarf_section_info)
3491 dwarf_select_sections_all ();
3520 display_object_bfd (bfd *abfd)
3524 if (bfd_check_format_matches (abfd, bfd_object, &matching))
3530 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3532 nonfatal (bfd_get_filename (abfd));
3533 list_matching_formats (matching);
3538 if (bfd_get_error () != bfd_error_file_not_recognized)
3540 nonfatal (bfd_get_filename (abfd));
3544 if (bfd_check_format_matches (abfd, bfd_core, &matching))
3550 nonfatal (bfd_get_filename (abfd));
3552 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3554 list_matching_formats (matching);
3560 display_any_bfd (bfd *file, int level)
3562 /* Decompress sections unless dumping the section contents. */
3563 if (!dump_section_contents)
3564 file->flags |= BFD_DECOMPRESS;
3566 /* If the file is an archive, process all of its elements. */
3567 if (bfd_check_format (file, bfd_archive))
3570 bfd *last_arfile = NULL;
3573 printf (_("In archive %s:\n"), bfd_get_filename (file));
3574 else if (level > 100)
3576 /* Prevent corrupted files from spinning us into an
3577 infinite loop. 100 is an arbitrary heuristic. */
3578 fatal (_("Archive nesting is too deep"));
3582 printf (_("In nested archive %s:\n"), bfd_get_filename (file));
3586 bfd_set_error (bfd_error_no_error);
3588 arfile = bfd_openr_next_archived_file (file, arfile);
3591 if (bfd_get_error () != bfd_error_no_more_archived_files)
3592 nonfatal (bfd_get_filename (file));
3596 display_any_bfd (arfile, level + 1);
3598 if (last_arfile != NULL)
3600 bfd_close (last_arfile);
3601 /* PR 17512: file: ac585d01. */
3602 if (arfile == last_arfile)
3608 last_arfile = arfile;
3611 if (last_arfile != NULL)
3612 bfd_close (last_arfile);
3615 display_object_bfd (file);
3619 display_file (char *filename, char *target)
3623 if (get_file_size (filename) < 1)
3629 file = bfd_openr (filename, target);
3632 nonfatal (filename);
3636 display_any_bfd (file, 0);
3642 main (int argc, char **argv)
3645 char *target = default_target;
3646 bfd_boolean seenflag = FALSE;
3648 #if defined (HAVE_SETLOCALE)
3649 #if defined (HAVE_LC_MESSAGES)
3650 setlocale (LC_MESSAGES, "");
3652 setlocale (LC_CTYPE, "");
3655 bindtextdomain (PACKAGE, LOCALEDIR);
3656 textdomain (PACKAGE);
3658 program_name = *argv;
3659 xmalloc_set_program_name (program_name);
3660 bfd_set_error_program_name (program_name);
3662 START_PROGRESS (program_name, 0);
3664 expandargv (&argc, &argv);
3667 set_default_bfd_target ();
3669 while ((c = getopt_long (argc, argv,
3670 "pP:ib:m:M:VvCdDlfFaHhrRtTxsSI:j:wE:zgeGW::",
3671 long_options, (int *) 0))
3677 break; /* We've been given a long option. */
3682 if (disassembler_options)
3683 /* Ignore potential memory leak for now. */
3684 disassembler_options = concat (disassembler_options, ",",
3685 optarg, (const char *) NULL);
3687 disassembler_options = optarg;
3693 display_file_offsets = TRUE;
3696 with_line_numbers = TRUE;
3705 enum demangling_styles style;
3707 style = cplus_demangle_name_to_style (optarg);
3708 if (style == unknown_demangling)
3709 fatal (_("unknown demangling style `%s'"),
3712 cplus_demangle_set_style (style);
3718 case OPTION_ADJUST_VMA:
3719 adjust_section_vma = parse_vma (optarg, "--adjust-vma");
3721 case OPTION_START_ADDRESS:
3722 start_address = parse_vma (optarg, "--start-address");
3723 if ((stop_address != (bfd_vma) -1) && stop_address <= start_address)
3724 fatal (_("error: the start address should be before the end address"));
3726 case OPTION_STOP_ADDRESS:
3727 stop_address = parse_vma (optarg, "--stop-address");
3728 if ((start_address != (bfd_vma) -1) && stop_address <= start_address)
3729 fatal (_("error: the stop address should be after the start address"));
3733 prefix_length = strlen (prefix);
3734 /* Remove an unnecessary trailing '/' */
3735 while (IS_DIR_SEPARATOR (prefix[prefix_length - 1]))
3738 case OPTION_PREFIX_STRIP:
3739 prefix_strip = atoi (optarg);
3740 if (prefix_strip < 0)
3741 fatal (_("error: prefix strip must be non-negative"));
3743 case OPTION_INSN_WIDTH:
3744 insn_width = strtoul (optarg, NULL, 0);
3745 if (insn_width <= 0)
3746 fatal (_("error: instruction width must be positive"));
3749 if (strcmp (optarg, "B") == 0)
3750 endian = BFD_ENDIAN_BIG;
3751 else if (strcmp (optarg, "L") == 0)
3752 endian = BFD_ENDIAN_LITTLE;
3755 nonfatal (_("unrecognized -E option"));
3760 if (strncmp (optarg, "big", strlen (optarg)) == 0)
3761 endian = BFD_ENDIAN_BIG;
3762 else if (strncmp (optarg, "little", strlen (optarg)) == 0)
3763 endian = BFD_ENDIAN_LITTLE;
3766 non_fatal (_("unrecognized --endian type `%s'"), optarg);
3773 dump_file_header = TRUE;
3777 formats_info = TRUE;
3781 add_include_path (optarg);
3784 dump_private_headers = TRUE;
3788 dump_private_options = optarg;
3792 dump_private_headers = TRUE;
3794 dump_reloc_info = TRUE;
3795 dump_file_header = TRUE;
3796 dump_ar_hdrs = TRUE;
3797 dump_section_headers = TRUE;
3805 dump_dynamic_symtab = TRUE;
3813 disassemble_zeroes = TRUE;
3817 disassemble_all = TRUE;
3822 with_source_code = TRUE;
3831 dump_debugging_tags = 1;
3836 dump_dwarf_section_info = TRUE;
3839 dwarf_select_sections_by_letters (optarg);
3841 dwarf_select_sections_all ();
3844 dump_dwarf_section_info = TRUE;
3847 dwarf_select_sections_by_names (optarg);
3849 dwarf_select_sections_all ();
3851 case OPTION_DWARF_DEPTH:
3854 dwarf_cutoff_level = strtoul (optarg, & cp, 0);
3857 case OPTION_DWARF_START:
3860 dwarf_start_die = strtoul (optarg, & cp, 0);
3861 suppress_bfd_header = 1;
3864 case OPTION_DWARF_CHECK:
3868 dump_stab_section_info = TRUE;
3872 dump_section_contents = TRUE;
3876 dump_reloc_info = TRUE;
3880 dump_dynamic_reloc_info = TRUE;
3884 dump_ar_hdrs = TRUE;
3888 dump_section_headers = TRUE;
3893 show_version = TRUE;
3899 /* No need to set seenflag or to break - usage() does not return. */
3906 print_version ("objdump");
3912 exit_status = display_info ();
3916 display_file ("a.out", target);
3918 for (; optind < argc;)
3919 display_file (argv[optind++], target);
3924 END_PROGRESS (program_name);