1 /* objdump.c -- dump information about an object file.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
4 Free Software Foundation, Inc.
6 This file is part of GNU Binutils.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3, or (at your option)
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
26 Objdump displays information about one or more object files, either on
27 their own, or inside libraries. It is commonly used as a disassembler,
28 but it can also display information about file headers, symbol tables,
29 relocations, debugging directives and more.
31 The flow of execution is as follows:
33 1. Command line arguments are checked for control switches and the
34 information to be displayed is selected.
36 2. Any remaining arguments are assumed to be object files, and they are
37 processed in order by display_bfd(). If the file is an archive each
38 of its elements is processed in turn.
40 3. The file's target architecture and binary file format are determined
41 by bfd_check_format(). If they are recognised, then dump_bfd() is
44 4. dump_bfd() in turn calls separate functions to display the requested
45 item(s) of information(s). For example disassemble_data() is called if
46 a disassembly has been requested.
48 When disassembling the code loops through blocks of instructions bounded
49 by symbols, calling disassemble_bytes() on each block. The actual
50 disassembling is done by the libopcodes library, via a function pointer
51 supplied by the disassembler() function. */
60 #include "safe-ctype.h"
62 #include "libiberty.h"
64 #include "filenames.h"
74 /* Internal headers for the ELF .stab-dump code - sorry. */
75 #define BYTES_IN_WORD 32
76 #include "aout/aout64.h"
79 static int exit_status
= 0;
81 static char *default_target
= NULL
; /* Default at runtime. */
83 /* The following variables are set based on arguments passed on the
85 static int show_version
= 0; /* Show the version number. */
86 static int dump_section_contents
; /* -s */
87 static int dump_section_headers
; /* -h */
88 static bfd_boolean dump_file_header
; /* -f */
89 static int dump_symtab
; /* -t */
90 static int dump_dynamic_symtab
; /* -T */
91 static int dump_reloc_info
; /* -r */
92 static int dump_dynamic_reloc_info
; /* -R */
93 static int dump_ar_hdrs
; /* -a */
94 static int dump_private_headers
; /* -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 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
;
188 usage (FILE *stream
, int status
)
190 fprintf (stream
, _("Usage: %s <option(s)> <file(s)>\n"), program_name
);
191 fprintf (stream
, _(" Display information from object <file(s)>.\n"));
192 fprintf (stream
, _(" At least one of the following switches must be given:\n"));
193 fprintf (stream
, _("\
194 -a, --archive-headers Display archive header information\n\
195 -f, --file-headers Display the contents of the overall file header\n\
196 -p, --private-headers Display object format specific file header contents\n\
197 -h, --[section-]headers Display the contents of the section headers\n\
198 -x, --all-headers Display the contents of all headers\n\
199 -d, --disassemble Display assembler contents of executable sections\n\
200 -D, --disassemble-all Display assembler contents of all sections\n\
201 -S, --source Intermix source code with disassembly\n\
202 -s, --full-contents Display the full contents of all sections requested\n\
203 -g, --debugging Display debug information in object file\n\
204 -e, --debugging-tags Display debug information using ctags style\n\
205 -G, --stabs Display (in raw form) any STABS info in the file\n\
206 -W[lLiaprmfFsoRt] or\n\
207 --dwarf[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,\n\
208 =frames-interp,=str,=loc,=Ranges,=pubtypes,\n\
209 =trace_info,=trace_abbrev,=trace_aranges]\n\
210 Display DWARF info in the file\n\
211 -t, --syms Display the contents of the symbol table(s)\n\
212 -T, --dynamic-syms Display the contents of the dynamic symbol table\n\
213 -r, --reloc Display the relocation entries in the file\n\
214 -R, --dynamic-reloc Display the dynamic relocation entries in the file\n\
215 @<file> Read options from <file>\n\
216 -v, --version Display this program's version number\n\
217 -i, --info List object formats and architectures supported\n\
218 -H, --help Display this information\n\
222 fprintf (stream
, _("\n The following switches are optional:\n"));
223 fprintf (stream
, _("\
224 -b, --target=BFDNAME Specify the target object format as BFDNAME\n\
225 -m, --architecture=MACHINE Specify the target architecture as MACHINE\n\
226 -j, --section=NAME Only display information for section NAME\n\
227 -M, --disassembler-options=OPT Pass text OPT on to the disassembler\n\
228 -EB --endian=big Assume big endian format when disassembling\n\
229 -EL --endian=little Assume little endian format when disassembling\n\
230 --file-start-context Include context from start of file (with -S)\n\
231 -I, --include=DIR Add DIR to search list for source files\n\
232 -l, --line-numbers Include line numbers and filenames in output\n\
233 -F, --file-offsets Include file offsets when displaying information\n\
234 -C, --demangle[=STYLE] Decode mangled/processed symbol names\n\
235 The STYLE, if specified, can be `auto', `gnu',\n\
236 `lucid', `arm', `hp', `edg', `gnu-v3', `java'\n\
238 -w, --wide Format output for more than 80 columns\n\
239 -z, --disassemble-zeroes Do not skip blocks of zeroes when disassembling\n\
240 --start-address=ADDR Only process data whose address is >= ADDR\n\
241 --stop-address=ADDR Only process data whose address is <= ADDR\n\
242 --prefix-addresses Print complete address alongside disassembly\n\
243 --[no-]show-raw-insn Display hex alongside symbolic disassembly\n\
244 --insn-width=WIDTH Display WIDTH bytes on a signle line for -d\n\
245 --adjust-vma=OFFSET Add OFFSET to all displayed section addresses\n\
246 --special-syms Include special symbols in symbol dumps\n\
247 --prefix=PREFIX Add PREFIX to absolute paths for -S\n\
248 --prefix-strip=LEVEL Strip initial directory names for -S\n\
250 list_supported_targets (program_name
, stream
);
251 list_supported_architectures (program_name
, stream
);
253 disassembler_usage (stream
);
255 if (REPORT_BUGS_TO
[0] && status
== 0)
256 fprintf (stream
, _("Report bugs to %s.\n"), REPORT_BUGS_TO
);
260 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
264 OPTION_START_ADDRESS
,
273 static struct option long_options
[]=
275 {"adjust-vma", required_argument
, NULL
, OPTION_ADJUST_VMA
},
276 {"all-headers", no_argument
, NULL
, 'x'},
277 {"private-headers", no_argument
, NULL
, 'p'},
278 {"architecture", required_argument
, NULL
, 'm'},
279 {"archive-headers", no_argument
, NULL
, 'a'},
280 {"debugging", no_argument
, NULL
, 'g'},
281 {"debugging-tags", no_argument
, NULL
, 'e'},
282 {"demangle", optional_argument
, NULL
, 'C'},
283 {"disassemble", no_argument
, NULL
, 'd'},
284 {"disassemble-all", no_argument
, NULL
, 'D'},
285 {"disassembler-options", required_argument
, NULL
, 'M'},
286 {"disassemble-zeroes", no_argument
, NULL
, 'z'},
287 {"dynamic-reloc", no_argument
, NULL
, 'R'},
288 {"dynamic-syms", no_argument
, NULL
, 'T'},
289 {"endian", required_argument
, NULL
, OPTION_ENDIAN
},
290 {"file-headers", no_argument
, NULL
, 'f'},
291 {"file-offsets", no_argument
, NULL
, 'F'},
292 {"file-start-context", no_argument
, &file_start_context
, 1},
293 {"full-contents", no_argument
, NULL
, 's'},
294 {"headers", no_argument
, NULL
, 'h'},
295 {"help", no_argument
, NULL
, 'H'},
296 {"info", no_argument
, NULL
, 'i'},
297 {"line-numbers", no_argument
, NULL
, 'l'},
298 {"no-show-raw-insn", no_argument
, &show_raw_insn
, -1},
299 {"prefix-addresses", no_argument
, &prefix_addresses
, 1},
300 {"reloc", no_argument
, NULL
, 'r'},
301 {"section", required_argument
, NULL
, 'j'},
302 {"section-headers", no_argument
, NULL
, 'h'},
303 {"show-raw-insn", no_argument
, &show_raw_insn
, 1},
304 {"source", no_argument
, NULL
, 'S'},
305 {"special-syms", no_argument
, &dump_special_syms
, 1},
306 {"include", required_argument
, NULL
, 'I'},
307 {"dwarf", optional_argument
, NULL
, OPTION_DWARF
},
308 {"stabs", no_argument
, NULL
, 'G'},
309 {"start-address", required_argument
, NULL
, OPTION_START_ADDRESS
},
310 {"stop-address", required_argument
, NULL
, OPTION_STOP_ADDRESS
},
311 {"syms", no_argument
, NULL
, 't'},
312 {"target", required_argument
, NULL
, 'b'},
313 {"version", no_argument
, NULL
, 'V'},
314 {"wide", no_argument
, NULL
, 'w'},
315 {"prefix", required_argument
, NULL
, OPTION_PREFIX
},
316 {"prefix-strip", required_argument
, NULL
, OPTION_PREFIX_STRIP
},
317 {"insn-width", required_argument
, NULL
, OPTION_INSN_WIDTH
},
318 {0, no_argument
, 0, 0}
322 nonfatal (const char *msg
)
328 /* Returns TRUE if the specified section should be dumped. */
331 process_section_p (asection
* section
)
335 if (only_list
== NULL
)
338 for (only
= only_list
; only
; only
= only
->next
)
339 if (strcmp (only
->name
, section
->name
) == 0)
348 /* Add an entry to the 'only' list. */
351 add_only (char * name
)
355 /* First check to make sure that we do not
356 already have an entry for this name. */
357 for (only
= only_list
; only
; only
= only
->next
)
358 if (strcmp (only
->name
, name
) == 0)
361 only
= xmalloc (sizeof * only
);
364 only
->next
= only_list
;
368 /* Release the memory used by the 'only' list.
369 PR 11225: Issue a warning message for unseen sections.
370 Only do this if none of the sections were seen. This is mainly to support
371 tools like the GAS testsuite where an object file is dumped with a list of
372 generic section names known to be present in a range of different file
376 free_only_list (void)
378 bfd_boolean at_least_one_seen
= FALSE
;
382 if (only_list
== NULL
)
385 for (only
= only_list
; only
; only
= only
->next
)
388 at_least_one_seen
= TRUE
;
392 for (only
= only_list
; only
; only
= next
)
394 if (! at_least_one_seen
)
396 non_fatal (_("section '%s' mentioned in a -j option, "
397 "but not found in any input file"),
408 dump_section_header (bfd
*abfd
, asection
*section
,
409 void *ignored ATTRIBUTE_UNUSED
)
412 unsigned int opb
= bfd_octets_per_byte (abfd
);
414 /* Ignore linker created section. See elfNN_ia64_object_p in
416 if (section
->flags
& SEC_LINKER_CREATED
)
419 /* PR 10413: Skip sections that we are ignoring. */
420 if (! process_section_p (section
))
423 printf ("%3d %-13s %08lx ", section
->index
,
424 bfd_get_section_name (abfd
, section
),
425 (unsigned long) bfd_section_size (abfd
, section
) / opb
);
426 bfd_printf_vma (abfd
, bfd_get_section_vma (abfd
, section
));
428 bfd_printf_vma (abfd
, section
->lma
);
429 printf (" %08lx 2**%u", (unsigned long) section
->filepos
,
430 bfd_get_section_alignment (abfd
, section
));
436 if (section->flags & x) { printf ("%s%s", comma, y); comma = ", "; }
438 PF (SEC_HAS_CONTENTS
, "CONTENTS");
439 PF (SEC_ALLOC
, "ALLOC");
440 PF (SEC_CONSTRUCTOR
, "CONSTRUCTOR");
441 PF (SEC_LOAD
, "LOAD");
442 PF (SEC_RELOC
, "RELOC");
443 PF (SEC_READONLY
, "READONLY");
444 PF (SEC_CODE
, "CODE");
445 PF (SEC_DATA
, "DATA");
447 PF (SEC_DEBUGGING
, "DEBUGGING");
448 PF (SEC_NEVER_LOAD
, "NEVER_LOAD");
449 PF (SEC_EXCLUDE
, "EXCLUDE");
450 PF (SEC_SORT_ENTRIES
, "SORT_ENTRIES");
451 if (bfd_get_arch (abfd
) == bfd_arch_tic54x
)
453 PF (SEC_TIC54X_BLOCK
, "BLOCK");
454 PF (SEC_TIC54X_CLINK
, "CLINK");
456 PF (SEC_SMALL_DATA
, "SMALL_DATA");
457 if (bfd_get_flavour (abfd
) == bfd_target_coff_flavour
)
458 PF (SEC_COFF_SHARED
, "SHARED");
459 PF (SEC_THREAD_LOCAL
, "THREAD_LOCAL");
460 PF (SEC_GROUP
, "GROUP");
462 if ((section
->flags
& SEC_LINK_ONCE
) != 0)
465 struct coff_comdat_info
*comdat
;
467 switch (section
->flags
& SEC_LINK_DUPLICATES
)
471 case SEC_LINK_DUPLICATES_DISCARD
:
472 ls
= "LINK_ONCE_DISCARD";
474 case SEC_LINK_DUPLICATES_ONE_ONLY
:
475 ls
= "LINK_ONCE_ONE_ONLY";
477 case SEC_LINK_DUPLICATES_SAME_SIZE
:
478 ls
= "LINK_ONCE_SAME_SIZE";
480 case SEC_LINK_DUPLICATES_SAME_CONTENTS
:
481 ls
= "LINK_ONCE_SAME_CONTENTS";
484 printf ("%s%s", comma
, ls
);
486 comdat
= bfd_coff_get_comdat_section (abfd
, section
);
488 printf (" (COMDAT %s %ld)", comdat
->name
, comdat
->symbol
);
498 dump_headers (bfd
*abfd
)
500 printf (_("Sections:\n"));
503 printf (_("Idx Name Size VMA LMA File off Algn"));
505 /* With BFD64, non-ELF returns -1 and wants always 64 bit addresses. */
506 if (bfd_get_arch_size (abfd
) == 32)
507 printf (_("Idx Name Size VMA LMA File off Algn"));
509 printf (_("Idx Name Size VMA LMA File off Algn"));
513 printf (_(" Flags"));
516 bfd_map_over_sections (abfd
, dump_section_header
, NULL
);
520 slurp_symtab (bfd
*abfd
)
525 if (!(bfd_get_file_flags (abfd
) & HAS_SYMS
))
531 storage
= bfd_get_symtab_upper_bound (abfd
);
533 bfd_fatal (bfd_get_filename (abfd
));
535 sy
= (asymbol
**) xmalloc (storage
);
537 symcount
= bfd_canonicalize_symtab (abfd
, sy
);
539 bfd_fatal (bfd_get_filename (abfd
));
543 /* Read in the dynamic symbols. */
546 slurp_dynamic_symtab (bfd
*abfd
)
551 storage
= bfd_get_dynamic_symtab_upper_bound (abfd
);
554 if (!(bfd_get_file_flags (abfd
) & DYNAMIC
))
556 non_fatal (_("%s: not a dynamic object"), bfd_get_filename (abfd
));
562 bfd_fatal (bfd_get_filename (abfd
));
565 sy
= (asymbol
**) xmalloc (storage
);
567 dynsymcount
= bfd_canonicalize_dynamic_symtab (abfd
, sy
);
569 bfd_fatal (bfd_get_filename (abfd
));
573 /* Filter out (in place) symbols that are useless for disassembly.
574 COUNT is the number of elements in SYMBOLS.
575 Return the number of useful symbols. */
578 remove_useless_symbols (asymbol
**symbols
, long count
)
580 asymbol
**in_ptr
= symbols
, **out_ptr
= symbols
;
584 asymbol
*sym
= *in_ptr
++;
586 if (sym
->name
== NULL
|| sym
->name
[0] == '\0')
588 if (sym
->flags
& (BSF_DEBUGGING
| BSF_SECTION_SYM
))
590 if (bfd_is_und_section (sym
->section
)
591 || bfd_is_com_section (sym
->section
))
596 return out_ptr
- symbols
;
599 /* Sort symbols into value order. */
602 compare_symbols (const void *ap
, const void *bp
)
604 const asymbol
*a
= * (const asymbol
**) ap
;
605 const asymbol
*b
= * (const asymbol
**) bp
;
615 if (bfd_asymbol_value (a
) > bfd_asymbol_value (b
))
617 else if (bfd_asymbol_value (a
) < bfd_asymbol_value (b
))
620 if (a
->section
> b
->section
)
622 else if (a
->section
< b
->section
)
625 an
= bfd_asymbol_name (a
);
626 bn
= bfd_asymbol_name (b
);
630 /* The symbols gnu_compiled and gcc2_compiled convey no real
631 information, so put them after other symbols with the same value. */
632 af
= (strstr (an
, "gnu_compiled") != NULL
633 || strstr (an
, "gcc2_compiled") != NULL
);
634 bf
= (strstr (bn
, "gnu_compiled") != NULL
635 || strstr (bn
, "gcc2_compiled") != NULL
);
642 /* We use a heuristic for the file name, to try to sort it after
643 more useful symbols. It may not work on non Unix systems, but it
644 doesn't really matter; the only difference is precisely which
645 symbol names get printed. */
647 #define file_symbol(s, sn, snl) \
648 (((s)->flags & BSF_FILE) != 0 \
649 || ((sn)[(snl) - 2] == '.' \
650 && ((sn)[(snl) - 1] == 'o' \
651 || (sn)[(snl) - 1] == 'a')))
653 af
= file_symbol (a
, an
, anl
);
654 bf
= file_symbol (b
, bn
, bnl
);
661 /* Try to sort global symbols before local symbols before function
662 symbols before debugging symbols. */
667 if ((aflags
& BSF_DEBUGGING
) != (bflags
& BSF_DEBUGGING
))
669 if ((aflags
& BSF_DEBUGGING
) != 0)
674 if ((aflags
& BSF_FUNCTION
) != (bflags
& BSF_FUNCTION
))
676 if ((aflags
& BSF_FUNCTION
) != 0)
681 if ((aflags
& BSF_LOCAL
) != (bflags
& BSF_LOCAL
))
683 if ((aflags
& BSF_LOCAL
) != 0)
688 if ((aflags
& BSF_GLOBAL
) != (bflags
& BSF_GLOBAL
))
690 if ((aflags
& BSF_GLOBAL
) != 0)
696 /* Symbols that start with '.' might be section names, so sort them
697 after symbols that don't start with '.'. */
698 if (an
[0] == '.' && bn
[0] != '.')
700 if (an
[0] != '.' && bn
[0] == '.')
703 /* Finally, if we can't distinguish them in any other way, try to
704 get consistent results by sorting the symbols by name. */
705 return strcmp (an
, bn
);
708 /* Sort relocs into address order. */
711 compare_relocs (const void *ap
, const void *bp
)
713 const arelent
*a
= * (const arelent
**) ap
;
714 const arelent
*b
= * (const arelent
**) bp
;
716 if (a
->address
> b
->address
)
718 else if (a
->address
< b
->address
)
721 /* So that associated relocations tied to the same address show up
722 in the correct order, we don't do any further sorting. */
731 /* Print an address (VMA) to the output stream in INFO.
732 If SKIP_ZEROES is TRUE, omit leading zeroes. */
735 objdump_print_value (bfd_vma vma
, struct disassemble_info
*inf
,
736 bfd_boolean skip_zeroes
)
740 struct objdump_disasm_info
*aux
;
742 aux
= (struct objdump_disasm_info
*) inf
->application_data
;
743 bfd_sprintf_vma (aux
->abfd
, buf
, vma
);
748 for (p
= buf
; *p
== '0'; ++p
)
753 (*inf
->fprintf_func
) (inf
->stream
, "%s", p
);
756 /* Print the name of a symbol. */
759 objdump_print_symname (bfd
*abfd
, struct disassemble_info
*inf
,
766 name
= bfd_asymbol_name (sym
);
767 if (do_demangle
&& name
[0] != '\0')
769 /* Demangle the name. */
770 alloc
= bfd_demangle (abfd
, name
, DMGL_ANSI
| DMGL_PARAMS
);
776 (*inf
->fprintf_func
) (inf
->stream
, "%s", name
);
784 /* Locate a symbol given a bfd and a section (from INFO->application_data),
785 and a VMA. If INFO->application_data->require_sec is TRUE, then always
786 require the symbol to be in the section. Returns NULL if there is no
787 suitable symbol. If PLACE is not NULL, then *PLACE is set to the index
788 of the symbol in sorted_syms. */
791 find_symbol_for_address (bfd_vma vma
,
792 struct disassemble_info
*inf
,
795 /* @@ Would it speed things up to cache the last two symbols returned,
796 and maybe their address ranges? For many processors, only one memory
797 operand can be present at a time, so the 2-entry cache wouldn't be
798 constantly churned by code doing heavy memory accesses. */
800 /* Indices in `sorted_syms'. */
802 long max_count
= sorted_symcount
;
804 struct objdump_disasm_info
*aux
;
808 bfd_boolean want_section
;
810 if (sorted_symcount
< 1)
813 aux
= (struct objdump_disasm_info
*) inf
->application_data
;
816 opb
= inf
->octets_per_byte
;
818 /* Perform a binary search looking for the closest symbol to the
819 required value. We are searching the range (min, max_count]. */
820 while (min
+ 1 < max_count
)
824 thisplace
= (max_count
+ min
) / 2;
825 sym
= sorted_syms
[thisplace
];
827 if (bfd_asymbol_value (sym
) > vma
)
828 max_count
= thisplace
;
829 else if (bfd_asymbol_value (sym
) < vma
)
838 /* The symbol we want is now in min, the low end of the range we
839 were searching. If there are several symbols with the same
840 value, we want the first one. */
843 && (bfd_asymbol_value (sorted_syms
[thisplace
])
844 == bfd_asymbol_value (sorted_syms
[thisplace
- 1])))
847 /* Prefer a symbol in the current section if we have multple symbols
848 with the same value, as can occur with overlays or zero size
851 while (min
< max_count
852 && (bfd_asymbol_value (sorted_syms
[min
])
853 == bfd_asymbol_value (sorted_syms
[thisplace
])))
855 if (sorted_syms
[min
]->section
== sec
856 && inf
->symbol_is_valid (sorted_syms
[min
], inf
))
863 return sorted_syms
[thisplace
];
868 /* If the file is relocatable, and the symbol could be from this
869 section, prefer a symbol from this section over symbols from
870 others, even if the other symbol's value might be closer.
872 Note that this may be wrong for some symbol references if the
873 sections have overlapping memory ranges, but in that case there's
874 no way to tell what's desired without looking at the relocation
877 Also give the target a chance to reject symbols. */
878 want_section
= (aux
->require_sec
879 || ((abfd
->flags
& HAS_RELOC
) != 0
880 && vma
>= bfd_get_section_vma (abfd
, sec
)
881 && vma
< (bfd_get_section_vma (abfd
, sec
)
882 + bfd_section_size (abfd
, sec
) / opb
)));
883 if ((sorted_syms
[thisplace
]->section
!= sec
&& want_section
)
884 || ! inf
->symbol_is_valid (sorted_syms
[thisplace
], inf
))
887 long newplace
= sorted_symcount
;
889 for (i
= min
- 1; i
>= 0; i
--)
891 if ((sorted_syms
[i
]->section
== sec
|| !want_section
)
892 && inf
->symbol_is_valid (sorted_syms
[i
], inf
))
894 if (newplace
== sorted_symcount
)
897 if (bfd_asymbol_value (sorted_syms
[i
])
898 != bfd_asymbol_value (sorted_syms
[newplace
]))
901 /* Remember this symbol and keep searching until we reach
902 an earlier address. */
907 if (newplace
!= sorted_symcount
)
908 thisplace
= newplace
;
911 /* We didn't find a good symbol with a smaller value.
912 Look for one with a larger value. */
913 for (i
= thisplace
+ 1; i
< sorted_symcount
; i
++)
915 if ((sorted_syms
[i
]->section
== sec
|| !want_section
)
916 && inf
->symbol_is_valid (sorted_syms
[i
], inf
))
924 if ((sorted_syms
[thisplace
]->section
!= sec
&& want_section
)
925 || ! inf
->symbol_is_valid (sorted_syms
[thisplace
], inf
))
926 /* There is no suitable symbol. */
933 return sorted_syms
[thisplace
];
936 /* Print an address and the offset to the nearest symbol. */
939 objdump_print_addr_with_sym (bfd
*abfd
, asection
*sec
, asymbol
*sym
,
940 bfd_vma vma
, struct disassemble_info
*inf
,
941 bfd_boolean skip_zeroes
)
943 objdump_print_value (vma
, inf
, skip_zeroes
);
949 (*inf
->fprintf_func
) (inf
->stream
, " <%s",
950 bfd_get_section_name (abfd
, sec
));
951 secaddr
= bfd_get_section_vma (abfd
, sec
);
954 (*inf
->fprintf_func
) (inf
->stream
, "-0x");
955 objdump_print_value (secaddr
- vma
, inf
, TRUE
);
957 else if (vma
> secaddr
)
959 (*inf
->fprintf_func
) (inf
->stream
, "+0x");
960 objdump_print_value (vma
- secaddr
, inf
, TRUE
);
962 (*inf
->fprintf_func
) (inf
->stream
, ">");
966 (*inf
->fprintf_func
) (inf
->stream
, " <");
967 objdump_print_symname (abfd
, inf
, sym
);
968 if (bfd_asymbol_value (sym
) > vma
)
970 (*inf
->fprintf_func
) (inf
->stream
, "-0x");
971 objdump_print_value (bfd_asymbol_value (sym
) - vma
, inf
, TRUE
);
973 else if (vma
> bfd_asymbol_value (sym
))
975 (*inf
->fprintf_func
) (inf
->stream
, "+0x");
976 objdump_print_value (vma
- bfd_asymbol_value (sym
), inf
, TRUE
);
978 (*inf
->fprintf_func
) (inf
->stream
, ">");
981 if (display_file_offsets
)
982 inf
->fprintf_func (inf
->stream
, _(" (File Offset: 0x%lx)"),
983 (long int)(sec
->filepos
+ (vma
- sec
->vma
)));
986 /* Print an address (VMA), symbolically if possible.
987 If SKIP_ZEROES is TRUE, don't output leading zeroes. */
990 objdump_print_addr (bfd_vma vma
,
991 struct disassemble_info
*inf
,
992 bfd_boolean skip_zeroes
)
994 struct objdump_disasm_info
*aux
;
996 bfd_boolean skip_find
= FALSE
;
998 aux
= (struct objdump_disasm_info
*) inf
->application_data
;
1000 if (sorted_symcount
< 1)
1002 (*inf
->fprintf_func
) (inf
->stream
, "0x");
1003 objdump_print_value (vma
, inf
, skip_zeroes
);
1005 if (display_file_offsets
)
1006 inf
->fprintf_func (inf
->stream
, _(" (File Offset: 0x%lx)"),
1007 (long int)(aux
->sec
->filepos
+ (vma
- aux
->sec
->vma
)));
1011 if (aux
->reloc
!= NULL
1012 && aux
->reloc
->sym_ptr_ptr
!= NULL
1013 && * aux
->reloc
->sym_ptr_ptr
!= NULL
)
1015 sym
= * aux
->reloc
->sym_ptr_ptr
;
1017 /* Adjust the vma to the reloc. */
1018 vma
+= bfd_asymbol_value (sym
);
1020 if (bfd_is_und_section (bfd_get_section (sym
)))
1025 sym
= find_symbol_for_address (vma
, inf
, NULL
);
1027 objdump_print_addr_with_sym (aux
->abfd
, aux
->sec
, sym
, vma
, inf
,
1031 /* Print VMA to INFO. This function is passed to the disassembler
1035 objdump_print_address (bfd_vma vma
, struct disassemble_info
*inf
)
1037 objdump_print_addr (vma
, inf
, ! prefix_addresses
);
1040 /* Determine if the given address has a symbol associated with it. */
1043 objdump_symbol_at_address (bfd_vma vma
, struct disassemble_info
* inf
)
1047 sym
= find_symbol_for_address (vma
, inf
, NULL
);
1049 return (sym
!= NULL
&& (bfd_asymbol_value (sym
) == vma
));
1052 /* Hold the last function name and the last line number we displayed
1053 in a disassembly. */
1055 static char *prev_functionname
;
1056 static unsigned int prev_line
;
1058 /* We keep a list of all files that we have seen when doing a
1059 disassembly with source, so that we know how much of the file to
1060 display. This can be important for inlined functions. */
1062 struct print_file_list
1064 struct print_file_list
*next
;
1065 const char *filename
;
1066 const char *modname
;
1069 const char **linemap
;
1075 static struct print_file_list
*print_files
;
1077 /* The number of preceding context lines to show when we start
1078 displaying a file for the first time. */
1080 #define SHOW_PRECEDING_CONTEXT_LINES (5)
1082 /* Read a complete file into memory. */
1085 slurp_file (const char *fn
, size_t *size
)
1088 int ps
= getpagesize ();
1093 int fd
= open (fn
, O_RDONLY
| O_BINARY
);
1097 if (fstat (fd
, &st
) < 0)
1101 msize
= (*size
+ ps
- 1) & ~(ps
- 1);
1102 map
= mmap (NULL
, msize
, PROT_READ
, MAP_SHARED
, fd
, 0);
1103 if (map
!= (char *)-1L)
1109 map
= (const char *) malloc (*size
);
1110 if (!map
|| (size_t) read (fd
, (char *)map
, *size
) != *size
)
1119 #define line_map_decrease 5
1121 /* Precompute array of lines for a mapped file. */
1123 static const char **
1124 index_file (const char *map
, size_t size
, unsigned int *maxline
)
1126 const char *p
, *lstart
, *end
;
1127 int chars_per_line
= 45; /* First iteration will use 40. */
1128 unsigned int lineno
;
1129 const char **linemap
= NULL
;
1130 unsigned long line_map_size
= 0;
1136 for (p
= map
; p
< end
; p
++)
1140 if (p
+ 1 < end
&& p
[1] == '\r')
1143 else if (*p
== '\r')
1145 if (p
+ 1 < end
&& p
[1] == '\n')
1151 /* End of line found. */
1153 if (linemap
== NULL
|| line_map_size
< lineno
+ 1)
1155 unsigned long newsize
;
1157 chars_per_line
-= line_map_decrease
;
1158 if (chars_per_line
<= 1)
1160 line_map_size
= size
/ chars_per_line
+ 1;
1161 if (line_map_size
< lineno
+ 1)
1162 line_map_size
= lineno
+ 1;
1163 newsize
= line_map_size
* sizeof (char *);
1164 linemap
= (const char **) xrealloc (linemap
, newsize
);
1167 linemap
[lineno
++] = lstart
;
1175 /* Tries to open MODNAME, and if successful adds a node to print_files
1176 linked list and returns that node. Returns NULL on failure. */
1178 static struct print_file_list
*
1179 try_print_file_open (const char *origname
, const char *modname
)
1181 struct print_file_list
*p
;
1183 p
= (struct print_file_list
*) xmalloc (sizeof (struct print_file_list
));
1185 p
->map
= slurp_file (modname
, &p
->mapsize
);
1192 p
->linemap
= index_file (p
->map
, p
->mapsize
, &p
->maxline
);
1194 p
->filename
= origname
;
1195 p
->modname
= modname
;
1196 p
->next
= print_files
;
1202 /* If the the source file, as described in the symtab, is not found
1203 try to locate it in one of the paths specified with -I
1204 If found, add location to print_files linked list. */
1206 static struct print_file_list
*
1207 update_source_path (const char *filename
)
1209 struct print_file_list
*p
;
1213 p
= try_print_file_open (filename
, filename
);
1217 if (include_path_count
== 0)
1220 /* Get the name of the file. */
1221 fname
= lbasename (filename
);
1223 /* If file exists under a new path, we need to add it to the list
1224 so that show_line knows about it. */
1225 for (i
= 0; i
< include_path_count
; i
++)
1227 char *modname
= concat (include_paths
[i
], "/", fname
, (const char *) 0);
1229 p
= try_print_file_open (filename
, modname
);
1239 /* Print a source file line. */
1242 print_line (struct print_file_list
*p
, unsigned int linenum
)
1248 if (linenum
>= p
->maxline
)
1250 l
= p
->linemap
[linenum
];
1251 /* Test fwrite return value to quiet glibc warning. */
1252 len
= strcspn (l
, "\n\r");
1253 if (len
== 0 || fwrite (l
, len
, 1, stdout
) == 1)
1257 /* Print a range of source code lines. */
1260 dump_lines (struct print_file_list
*p
, unsigned int start
, unsigned int end
)
1264 while (start
<= end
)
1266 print_line (p
, start
);
1271 /* Show the line number, or the source line, in a disassembly
1275 show_line (bfd
*abfd
, asection
*section
, bfd_vma addr_offset
)
1277 const char *filename
;
1278 const char *functionname
;
1279 unsigned int linenumber
;
1282 if (! with_line_numbers
&& ! with_source_code
)
1285 if (! bfd_find_nearest_line (abfd
, section
, syms
, addr_offset
, &filename
,
1286 &functionname
, &linenumber
))
1289 if (filename
!= NULL
&& *filename
== '\0')
1291 if (functionname
!= NULL
&& *functionname
== '\0')
1292 functionname
= NULL
;
1295 && IS_ABSOLUTE_PATH (filename
)
1299 const char *fname
= filename
;
1300 char *path
= (char *) alloca (prefix_length
+ PATH_MAX
+ 1);
1303 memcpy (path
, prefix
, prefix_length
);
1304 path_up
= path
+ prefix_length
;
1306 /* Build relocated filename, stripping off leading directories
1307 from the initial filename if requested. */
1308 if (prefix_strip
> 0)
1313 /* Skip selected directory levels. */
1314 for (s
= fname
+ 1; *s
!= '\0' && level
< prefix_strip
; s
++)
1315 if (IS_DIR_SEPARATOR(*s
))
1322 /* Update complete filename. */
1323 strncpy (path_up
, fname
, PATH_MAX
);
1324 path_up
[PATH_MAX
] = '\0';
1332 if (with_line_numbers
)
1334 if (functionname
!= NULL
1335 && (prev_functionname
== NULL
1336 || strcmp (functionname
, prev_functionname
) != 0))
1337 printf ("%s():\n", functionname
);
1338 if (linenumber
> 0 && linenumber
!= prev_line
)
1339 printf ("%s:%u\n", filename
== NULL
? "???" : filename
, linenumber
);
1342 if (with_source_code
1346 struct print_file_list
**pp
, *p
;
1349 for (pp
= &print_files
; *pp
!= NULL
; pp
= &(*pp
)->next
)
1350 if (strcmp ((*pp
)->filename
, filename
) == 0)
1357 filename
= xstrdup (filename
);
1358 p
= update_source_path (filename
);
1361 if (p
!= NULL
&& linenumber
!= p
->last_line
)
1363 if (file_start_context
&& p
->first
)
1367 l
= linenumber
- SHOW_PRECEDING_CONTEXT_LINES
;
1368 if (l
>= linenumber
)
1370 if (p
->last_line
>= l
&& p
->last_line
<= linenumber
)
1371 l
= p
->last_line
+ 1;
1373 dump_lines (p
, l
, linenumber
);
1374 p
->last_line
= linenumber
;
1379 if (functionname
!= NULL
1380 && (prev_functionname
== NULL
1381 || strcmp (functionname
, prev_functionname
) != 0))
1383 if (prev_functionname
!= NULL
)
1384 free (prev_functionname
);
1385 prev_functionname
= (char *) xmalloc (strlen (functionname
) + 1);
1386 strcpy (prev_functionname
, functionname
);
1389 if (linenumber
> 0 && linenumber
!= prev_line
)
1390 prev_line
= linenumber
;
1393 /* Pseudo FILE object for strings. */
1401 /* sprintf to a "stream". */
1403 static int ATTRIBUTE_PRINTF_2
1404 objdump_sprintf (SFILE
*f
, const char *format
, ...)
1411 size_t space
= f
->alloc
- f
->pos
;
1413 va_start (args
, format
);
1414 n
= vsnprintf (f
->buffer
+ f
->pos
, space
, format
, args
);
1420 f
->alloc
= (f
->alloc
+ n
) * 2;
1421 f
->buffer
= (char *) xrealloc (f
->buffer
, f
->alloc
);
1428 /* The number of zeroes we want to see before we start skipping them.
1429 The number is arbitrarily chosen. */
1431 #define DEFAULT_SKIP_ZEROES 8
1433 /* The number of zeroes to skip at the end of a section. If the
1434 number of zeroes at the end is between SKIP_ZEROES_AT_END and
1435 SKIP_ZEROES, they will be disassembled. If there are fewer than
1436 SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic
1437 attempt to avoid disassembling zeroes inserted by section
1440 #define DEFAULT_SKIP_ZEROES_AT_END 3
1442 /* Disassemble some data in memory between given values. */
1445 disassemble_bytes (struct disassemble_info
* inf
,
1446 disassembler_ftype disassemble_fn
,
1449 bfd_vma start_offset
,
1450 bfd_vma stop_offset
,
1453 arelent
** relppend
)
1455 struct objdump_disasm_info
*aux
;
1457 int octets_per_line
;
1458 int skip_addr_chars
;
1459 bfd_vma addr_offset
;
1460 unsigned int opb
= inf
->octets_per_byte
;
1461 unsigned int skip_zeroes
= inf
->skip_zeroes
;
1462 unsigned int skip_zeroes_at_end
= inf
->skip_zeroes_at_end
;
1466 aux
= (struct objdump_disasm_info
*) inf
->application_data
;
1470 sfile
.buffer
= (char *) xmalloc (sfile
.alloc
);
1474 octets_per_line
= insn_width
;
1476 octets_per_line
= 4;
1478 octets_per_line
= 16;
1480 /* Figure out how many characters to skip at the start of an
1481 address, to make the disassembly look nicer. We discard leading
1482 zeroes in chunks of 4, ensuring that there is always a leading
1484 skip_addr_chars
= 0;
1485 if (! prefix_addresses
)
1489 bfd_sprintf_vma (aux
->abfd
, buf
, section
->vma
+ section
->size
/ opb
);
1491 while (buf
[skip_addr_chars
] == '0')
1494 /* Don't discard zeros on overflow. */
1495 if (buf
[skip_addr_chars
] == '\0' && section
->vma
!= 0)
1496 skip_addr_chars
= 0;
1498 if (skip_addr_chars
!= 0)
1499 skip_addr_chars
= (skip_addr_chars
- 1) & -4;
1502 inf
->insn_info_valid
= 0;
1504 addr_offset
= start_offset
;
1505 while (addr_offset
< stop_offset
)
1508 bfd_boolean need_nl
= FALSE
;
1509 int previous_octets
;
1511 /* Remember the length of the previous instruction. */
1512 previous_octets
= octets
;
1515 /* Make sure we don't use relocs from previous instructions. */
1518 /* If we see more than SKIP_ZEROES octets of zeroes, we just
1520 for (z
= addr_offset
* opb
; z
< stop_offset
* opb
; z
++)
1523 if (! disassemble_zeroes
1524 && (inf
->insn_info_valid
== 0
1525 || inf
->branch_delay_insns
== 0)
1526 && (z
- addr_offset
* opb
>= skip_zeroes
1527 || (z
== stop_offset
* opb
&&
1528 z
- addr_offset
* opb
< skip_zeroes_at_end
)))
1530 /* If there are more nonzero octets to follow, we only skip
1531 zeroes in multiples of 4, to try to avoid running over
1532 the start of an instruction which happens to start with
1534 if (z
!= stop_offset
* opb
)
1535 z
= addr_offset
* opb
+ ((z
- addr_offset
* opb
) &~ 3);
1537 octets
= z
- addr_offset
* opb
;
1539 /* If we are going to display more data, and we are displaying
1540 file offsets, then tell the user how many zeroes we skip
1541 and the file offset from where we resume dumping. */
1542 if (display_file_offsets
&& ((addr_offset
+ (octets
/ opb
)) < stop_offset
))
1543 printf ("\t... (skipping %d zeroes, resuming at file offset: 0x%lx)\n",
1545 (unsigned long) (section
->filepos
1546 + (addr_offset
+ (octets
/ opb
))));
1556 if (with_line_numbers
|| with_source_code
)
1557 show_line (aux
->abfd
, section
, addr_offset
);
1559 if (! prefix_addresses
)
1563 bfd_sprintf_vma (aux
->abfd
, buf
, section
->vma
+ addr_offset
);
1564 for (s
= buf
+ skip_addr_chars
; *s
== '0'; s
++)
1568 printf ("%s:\t", buf
+ skip_addr_chars
);
1572 aux
->require_sec
= TRUE
;
1573 objdump_print_address (section
->vma
+ addr_offset
, inf
);
1574 aux
->require_sec
= FALSE
;
1581 inf
->fprintf_func
= (fprintf_ftype
) objdump_sprintf
;
1582 inf
->stream
= &sfile
;
1583 inf
->bytes_per_line
= 0;
1584 inf
->bytes_per_chunk
= 0;
1585 inf
->flags
= disassemble_all
? DISASSEMBLE_DATA
: 0;
1587 inf
->flags
|= USER_SPECIFIED_MACHINE_TYPE
;
1589 if (inf
->disassembler_needs_relocs
1590 && (bfd_get_file_flags (aux
->abfd
) & EXEC_P
) == 0
1591 && (bfd_get_file_flags (aux
->abfd
) & DYNAMIC
) == 0
1592 && *relppp
< relppend
)
1594 bfd_signed_vma distance_to_rel
;
1596 distance_to_rel
= (**relppp
)->address
1597 - (rel_offset
+ addr_offset
);
1599 /* Check to see if the current reloc is associated with
1600 the instruction that we are about to disassemble. */
1601 if (distance_to_rel
== 0
1602 /* FIXME: This is wrong. We are trying to catch
1603 relocs that are addressed part way through the
1604 current instruction, as might happen with a packed
1605 VLIW instruction. Unfortunately we do not know the
1606 length of the current instruction since we have not
1607 disassembled it yet. Instead we take a guess based
1608 upon the length of the previous instruction. The
1609 proper solution is to have a new target-specific
1610 disassembler function which just returns the length
1611 of an instruction at a given address without trying
1612 to display its disassembly. */
1613 || (distance_to_rel
> 0
1614 && distance_to_rel
< (bfd_signed_vma
) (previous_octets
/ opb
)))
1616 inf
->flags
|= INSN_HAS_RELOC
;
1617 aux
->reloc
= **relppp
;
1621 octets
= (*disassemble_fn
) (section
->vma
+ addr_offset
, inf
);
1622 inf
->fprintf_func
= (fprintf_ftype
) fprintf
;
1623 inf
->stream
= stdout
;
1624 if (insn_width
== 0 && inf
->bytes_per_line
!= 0)
1625 octets_per_line
= inf
->bytes_per_line
;
1626 if (octets
< (int) opb
)
1629 printf ("%s\n", sfile
.buffer
);
1632 non_fatal (_("disassemble_fn returned length %d"),
1643 octets
= octets_per_line
;
1644 if (addr_offset
+ octets
/ opb
> stop_offset
)
1645 octets
= (stop_offset
- addr_offset
) * opb
;
1647 for (j
= addr_offset
* opb
; j
< addr_offset
* opb
+ octets
; ++j
)
1649 if (ISPRINT (data
[j
]))
1650 buf
[j
- addr_offset
* opb
] = data
[j
];
1652 buf
[j
- addr_offset
* opb
] = '.';
1654 buf
[j
- addr_offset
* opb
] = '\0';
1657 if (prefix_addresses
1659 : show_raw_insn
>= 0)
1663 /* If ! prefix_addresses and ! wide_output, we print
1664 octets_per_line octets per line. */
1666 if (pb
> octets_per_line
&& ! prefix_addresses
&& ! wide_output
)
1667 pb
= octets_per_line
;
1669 if (inf
->bytes_per_chunk
)
1670 bpc
= inf
->bytes_per_chunk
;
1674 for (j
= addr_offset
* opb
; j
< addr_offset
* opb
+ pb
; j
+= bpc
)
1678 if (bpc
> 1 && inf
->display_endian
== BFD_ENDIAN_LITTLE
)
1680 for (k
= bpc
- 1; k
>= 0; k
--)
1681 printf ("%02x", (unsigned) data
[j
+ k
]);
1686 for (k
= 0; k
< bpc
; k
++)
1687 printf ("%02x", (unsigned) data
[j
+ k
]);
1692 for (; pb
< octets_per_line
; pb
+= bpc
)
1696 for (k
= 0; k
< bpc
; k
++)
1701 /* Separate raw data from instruction by extra space. */
1711 printf ("%s", sfile
.buffer
);
1713 if (prefix_addresses
1715 : show_raw_insn
>= 0)
1723 j
= addr_offset
* opb
+ pb
;
1725 bfd_sprintf_vma (aux
->abfd
, buf
, section
->vma
+ j
/ opb
);
1726 for (s
= buf
+ skip_addr_chars
; *s
== '0'; s
++)
1730 printf ("%s:\t", buf
+ skip_addr_chars
);
1732 pb
+= octets_per_line
;
1735 for (; j
< addr_offset
* opb
+ pb
; j
+= bpc
)
1739 if (bpc
> 1 && inf
->display_endian
== BFD_ENDIAN_LITTLE
)
1741 for (k
= bpc
- 1; k
>= 0; k
--)
1742 printf ("%02x", (unsigned) data
[j
+ k
]);
1747 for (k
= 0; k
< bpc
; k
++)
1748 printf ("%02x", (unsigned) data
[j
+ k
]);
1761 while ((*relppp
) < relppend
1762 && (**relppp
)->address
< rel_offset
+ addr_offset
+ octets
/ opb
)
1764 if (dump_reloc_info
|| dump_dynamic_reloc_info
)
1775 objdump_print_value (section
->vma
- rel_offset
+ q
->address
,
1778 if (q
->howto
== NULL
)
1779 printf (": *unknown*\t");
1780 else if (q
->howto
->name
)
1781 printf (": %s\t", q
->howto
->name
);
1783 printf (": %d\t", q
->howto
->type
);
1785 if (q
->sym_ptr_ptr
== NULL
|| *q
->sym_ptr_ptr
== NULL
)
1786 printf ("*unknown*");
1789 const char *sym_name
;
1791 sym_name
= bfd_asymbol_name (*q
->sym_ptr_ptr
);
1792 if (sym_name
!= NULL
&& *sym_name
!= '\0')
1793 objdump_print_symname (aux
->abfd
, inf
, *q
->sym_ptr_ptr
);
1798 sym_sec
= bfd_get_section (*q
->sym_ptr_ptr
);
1799 sym_name
= bfd_get_section_name (aux
->abfd
, sym_sec
);
1800 if (sym_name
== NULL
|| *sym_name
== '\0')
1801 sym_name
= "*unknown*";
1802 printf ("%s", sym_name
);
1809 objdump_print_value (q
->addend
, inf
, TRUE
);
1821 addr_offset
+= octets
/ opb
;
1824 free (sfile
.buffer
);
1828 disassemble_section (bfd
*abfd
, asection
*section
, void *inf
)
1830 const struct elf_backend_data
* bed
;
1831 bfd_vma sign_adjust
= 0;
1832 struct disassemble_info
* pinfo
= (struct disassemble_info
*) inf
;
1833 struct objdump_disasm_info
* paux
;
1834 unsigned int opb
= pinfo
->octets_per_byte
;
1835 bfd_byte
* data
= NULL
;
1836 bfd_size_type datasize
= 0;
1837 arelent
** rel_pp
= NULL
;
1838 arelent
** rel_ppstart
= NULL
;
1839 arelent
** rel_ppend
;
1840 unsigned long stop_offset
;
1841 asymbol
* sym
= NULL
;
1845 unsigned long addr_offset
;
1847 /* Sections that do not contain machine
1848 code are not normally disassembled. */
1849 if (! disassemble_all
1850 && only_list
== NULL
1851 && ((section
->flags
& (SEC_CODE
| SEC_HAS_CONTENTS
))
1852 != (SEC_CODE
| SEC_HAS_CONTENTS
)))
1855 if (! process_section_p (section
))
1858 datasize
= bfd_get_section_size (section
);
1862 /* Decide which set of relocs to use. Load them if necessary. */
1863 paux
= (struct objdump_disasm_info
*) pinfo
->application_data
;
1864 if (paux
->dynrelbuf
)
1866 rel_pp
= paux
->dynrelbuf
;
1867 rel_count
= paux
->dynrelcount
;
1868 /* Dynamic reloc addresses are absolute, non-dynamic are section
1869 relative. REL_OFFSET specifies the reloc address corresponding
1870 to the start of this section. */
1871 rel_offset
= section
->vma
;
1879 if ((section
->flags
& SEC_RELOC
) != 0
1880 && (dump_reloc_info
|| pinfo
->disassembler_needs_relocs
))
1884 relsize
= bfd_get_reloc_upper_bound (abfd
, section
);
1886 bfd_fatal (bfd_get_filename (abfd
));
1890 rel_ppstart
= rel_pp
= (arelent
**) xmalloc (relsize
);
1891 rel_count
= bfd_canonicalize_reloc (abfd
, section
, rel_pp
, syms
);
1893 bfd_fatal (bfd_get_filename (abfd
));
1895 /* Sort the relocs by address. */
1896 qsort (rel_pp
, rel_count
, sizeof (arelent
*), compare_relocs
);
1900 rel_ppend
= rel_pp
+ rel_count
;
1902 data
= (bfd_byte
*) xmalloc (datasize
);
1904 bfd_get_section_contents (abfd
, section
, data
, 0, datasize
);
1906 paux
->sec
= section
;
1907 pinfo
->buffer
= data
;
1908 pinfo
->buffer_vma
= section
->vma
;
1909 pinfo
->buffer_length
= datasize
;
1910 pinfo
->section
= section
;
1912 if (start_address
== (bfd_vma
) -1
1913 || start_address
< pinfo
->buffer_vma
)
1916 addr_offset
= start_address
- pinfo
->buffer_vma
;
1918 if (stop_address
== (bfd_vma
) -1)
1919 stop_offset
= datasize
/ opb
;
1922 if (stop_address
< pinfo
->buffer_vma
)
1925 stop_offset
= stop_address
- pinfo
->buffer_vma
;
1926 if (stop_offset
> pinfo
->buffer_length
/ opb
)
1927 stop_offset
= pinfo
->buffer_length
/ opb
;
1930 /* Skip over the relocs belonging to addresses below the
1932 while (rel_pp
< rel_ppend
1933 && (*rel_pp
)->address
< rel_offset
+ addr_offset
)
1936 if (addr_offset
< stop_offset
)
1937 printf (_("\nDisassembly of section %s:\n"), section
->name
);
1939 /* Find the nearest symbol forwards from our current position. */
1940 paux
->require_sec
= TRUE
;
1941 sym
= (asymbol
*) find_symbol_for_address (section
->vma
+ addr_offset
,
1942 (struct disassemble_info
*) inf
,
1944 paux
->require_sec
= FALSE
;
1946 /* PR 9774: If the target used signed addresses then we must make
1947 sure that we sign extend the value that we calculate for 'addr'
1948 in the loop below. */
1949 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1950 && (bed
= get_elf_backend_data (abfd
)) != NULL
1951 && bed
->sign_extend_vma
)
1952 sign_adjust
= (bfd_vma
) 1 << (bed
->s
->arch_size
- 1);
1954 /* Disassemble a block of instructions up to the address associated with
1955 the symbol we have just found. Then print the symbol and find the
1956 next symbol on. Repeat until we have disassembled the entire section
1957 or we have reached the end of the address range we are interested in. */
1958 while (addr_offset
< stop_offset
)
1962 unsigned long nextstop_offset
;
1965 addr
= section
->vma
+ addr_offset
;
1966 addr
= ((addr
& ((sign_adjust
<< 1) - 1)) ^ sign_adjust
) - sign_adjust
;
1968 if (sym
!= NULL
&& bfd_asymbol_value (sym
) <= addr
)
1973 (x
< sorted_symcount
1974 && (bfd_asymbol_value (sorted_syms
[x
]) <= addr
));
1978 pinfo
->symbols
= sorted_syms
+ place
;
1979 pinfo
->num_symbols
= x
- place
;
1980 pinfo
->symtab_pos
= place
;
1984 pinfo
->symbols
= NULL
;
1985 pinfo
->num_symbols
= 0;
1986 pinfo
->symtab_pos
= -1;
1989 if (! prefix_addresses
)
1991 pinfo
->fprintf_func (pinfo
->stream
, "\n");
1992 objdump_print_addr_with_sym (abfd
, section
, sym
, addr
,
1994 pinfo
->fprintf_func (pinfo
->stream
, ":\n");
1997 if (sym
!= NULL
&& bfd_asymbol_value (sym
) > addr
)
1999 else if (sym
== NULL
)
2003 #define is_valid_next_sym(SYM) \
2004 ((SYM)->section == section \
2005 && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
2006 && pinfo->symbol_is_valid (SYM, pinfo))
2008 /* Search forward for the next appropriate symbol in
2009 SECTION. Note that all the symbols are sorted
2010 together into one big array, and that some sections
2011 may have overlapping addresses. */
2012 while (place
< sorted_symcount
2013 && ! is_valid_next_sym (sorted_syms
[place
]))
2016 if (place
>= sorted_symcount
)
2019 nextsym
= sorted_syms
[place
];
2022 if (sym
!= NULL
&& bfd_asymbol_value (sym
) > addr
)
2023 nextstop_offset
= bfd_asymbol_value (sym
) - section
->vma
;
2024 else if (nextsym
== NULL
)
2025 nextstop_offset
= stop_offset
;
2027 nextstop_offset
= bfd_asymbol_value (nextsym
) - section
->vma
;
2029 if (nextstop_offset
> stop_offset
2030 || nextstop_offset
<= addr_offset
)
2031 nextstop_offset
= stop_offset
;
2033 /* If a symbol is explicitly marked as being an object
2034 rather than a function, just dump the bytes without
2035 disassembling them. */
2038 || sym
->section
!= section
2039 || bfd_asymbol_value (sym
) > addr
2040 || ((sym
->flags
& BSF_OBJECT
) == 0
2041 && (strstr (bfd_asymbol_name (sym
), "gnu_compiled")
2043 && (strstr (bfd_asymbol_name (sym
), "gcc2_compiled")
2045 || (sym
->flags
& BSF_FUNCTION
) != 0)
2050 disassemble_bytes (pinfo
, paux
->disassemble_fn
, insns
, data
,
2051 addr_offset
, nextstop_offset
,
2052 rel_offset
, &rel_pp
, rel_ppend
);
2054 addr_offset
= nextstop_offset
;
2060 if (rel_ppstart
!= NULL
)
2064 /* Disassemble the contents of an object file. */
2067 disassemble_data (bfd
*abfd
)
2069 struct disassemble_info disasm_info
;
2070 struct objdump_disasm_info aux
;
2074 prev_functionname
= NULL
;
2077 /* We make a copy of syms to sort. We don't want to sort syms
2078 because that will screw up the relocs. */
2079 sorted_symcount
= symcount
? symcount
: dynsymcount
;
2080 sorted_syms
= (asymbol
**) xmalloc ((sorted_symcount
+ synthcount
)
2081 * sizeof (asymbol
*));
2082 memcpy (sorted_syms
, symcount
? syms
: dynsyms
,
2083 sorted_symcount
* sizeof (asymbol
*));
2085 sorted_symcount
= remove_useless_symbols (sorted_syms
, sorted_symcount
);
2087 for (i
= 0; i
< synthcount
; ++i
)
2089 sorted_syms
[sorted_symcount
] = synthsyms
+ i
;
2093 /* Sort the symbols into section and symbol order. */
2094 qsort (sorted_syms
, sorted_symcount
, sizeof (asymbol
*), compare_symbols
);
2096 init_disassemble_info (&disasm_info
, stdout
, (fprintf_ftype
) fprintf
);
2098 disasm_info
.application_data
= (void *) &aux
;
2100 aux
.require_sec
= FALSE
;
2101 aux
.dynrelbuf
= NULL
;
2102 aux
.dynrelcount
= 0;
2105 disasm_info
.print_address_func
= objdump_print_address
;
2106 disasm_info
.symbol_at_address_func
= objdump_symbol_at_address
;
2108 if (machine
!= NULL
)
2110 const bfd_arch_info_type
*inf
= bfd_scan_arch (machine
);
2113 fatal (_("can't use supplied machine %s"), machine
);
2115 abfd
->arch_info
= inf
;
2118 if (endian
!= BFD_ENDIAN_UNKNOWN
)
2120 struct bfd_target
*xvec
;
2122 xvec
= (struct bfd_target
*) xmalloc (sizeof (struct bfd_target
));
2123 memcpy (xvec
, abfd
->xvec
, sizeof (struct bfd_target
));
2124 xvec
->byteorder
= endian
;
2128 /* Use libopcodes to locate a suitable disassembler. */
2129 aux
.disassemble_fn
= disassembler (abfd
);
2130 if (!aux
.disassemble_fn
)
2132 non_fatal (_("can't disassemble for architecture %s\n"),
2133 bfd_printable_arch_mach (bfd_get_arch (abfd
), 0));
2138 disasm_info
.flavour
= bfd_get_flavour (abfd
);
2139 disasm_info
.arch
= bfd_get_arch (abfd
);
2140 disasm_info
.mach
= bfd_get_mach (abfd
);
2141 disasm_info
.disassembler_options
= disassembler_options
;
2142 disasm_info
.octets_per_byte
= bfd_octets_per_byte (abfd
);
2143 disasm_info
.skip_zeroes
= DEFAULT_SKIP_ZEROES
;
2144 disasm_info
.skip_zeroes_at_end
= DEFAULT_SKIP_ZEROES_AT_END
;
2145 disasm_info
.disassembler_needs_relocs
= FALSE
;
2147 if (bfd_big_endian (abfd
))
2148 disasm_info
.display_endian
= disasm_info
.endian
= BFD_ENDIAN_BIG
;
2149 else if (bfd_little_endian (abfd
))
2150 disasm_info
.display_endian
= disasm_info
.endian
= BFD_ENDIAN_LITTLE
;
2152 /* ??? Aborting here seems too drastic. We could default to big or little
2154 disasm_info
.endian
= BFD_ENDIAN_UNKNOWN
;
2156 /* Allow the target to customize the info structure. */
2157 disassemble_init_for_target (& disasm_info
);
2159 /* Pre-load the dynamic relocs if we are going
2160 to be dumping them along with the disassembly. */
2161 if (dump_dynamic_reloc_info
)
2163 long relsize
= bfd_get_dynamic_reloc_upper_bound (abfd
);
2166 bfd_fatal (bfd_get_filename (abfd
));
2170 aux
.dynrelbuf
= (arelent
**) xmalloc (relsize
);
2171 aux
.dynrelcount
= bfd_canonicalize_dynamic_reloc (abfd
,
2174 if (aux
.dynrelcount
< 0)
2175 bfd_fatal (bfd_get_filename (abfd
));
2177 /* Sort the relocs by address. */
2178 qsort (aux
.dynrelbuf
, aux
.dynrelcount
, sizeof (arelent
*),
2182 disasm_info
.symtab
= sorted_syms
;
2183 disasm_info
.symtab_size
= sorted_symcount
;
2185 bfd_map_over_sections (abfd
, disassemble_section
, & disasm_info
);
2187 if (aux
.dynrelbuf
!= NULL
)
2188 free (aux
.dynrelbuf
);
2193 load_specific_debug_section (enum dwarf_section_display_enum debug
,
2194 asection
*sec
, void *file
)
2196 struct dwarf_section
*section
= &debug_displays
[debug
].section
;
2197 bfd
*abfd
= (bfd
*) file
;
2200 /* If it is already loaded, do nothing. */
2201 if (section
->start
!= NULL
)
2204 section
->address
= 0;
2205 section
->size
= bfd_get_section_size (sec
);
2206 section
->start
= NULL
;
2207 ret
= bfd_get_full_section_contents (abfd
, sec
, §ion
->start
);
2211 free_debug_section (debug
);
2212 printf (_("\nCan't get contents for section '%s'.\n"),
2217 if (is_relocatable
&& debug_displays
[debug
].relocate
)
2219 /* We want to relocate the data we've already read (and
2220 decompressed), so we store a pointer to the data in
2221 the bfd_section, and tell it that the contents are
2222 already in memory. */
2223 sec
->contents
= section
->start
;
2224 sec
->flags
|= SEC_IN_MEMORY
;
2225 sec
->size
= section
->size
;
2227 ret
= bfd_simple_get_relocated_section_contents (abfd
,
2234 free_debug_section (debug
);
2235 printf (_("\nCan't get contents for section '%s'.\n"),
2245 load_debug_section (enum dwarf_section_display_enum debug
, void *file
)
2247 struct dwarf_section
*section
= &debug_displays
[debug
].section
;
2248 bfd
*abfd
= (bfd
*) file
;
2251 /* If it is already loaded, do nothing. */
2252 if (section
->start
!= NULL
)
2255 /* Locate the debug section. */
2256 sec
= bfd_get_section_by_name (abfd
, section
->uncompressed_name
);
2258 section
->name
= section
->uncompressed_name
;
2261 sec
= bfd_get_section_by_name (abfd
, section
->compressed_name
);
2263 section
->name
= section
->compressed_name
;
2268 return load_specific_debug_section (debug
, sec
, file
);
2272 free_debug_section (enum dwarf_section_display_enum debug
)
2274 struct dwarf_section
*section
= &debug_displays
[debug
].section
;
2276 if (section
->start
== NULL
)
2279 free ((char *) section
->start
);
2280 section
->start
= NULL
;
2281 section
->address
= 0;
2286 dump_dwarf_section (bfd
*abfd
, asection
*section
,
2287 void *arg ATTRIBUTE_UNUSED
)
2289 const char *name
= bfd_get_section_name (abfd
, section
);
2293 if (CONST_STRNEQ (name
, ".gnu.linkonce.wi."))
2294 match
= ".debug_info";
2298 for (i
= 0; i
< max
; i
++)
2299 if ((strcmp (debug_displays
[i
].section
.uncompressed_name
, match
) == 0
2300 || strcmp (debug_displays
[i
].section
.compressed_name
, match
) == 0)
2301 && debug_displays
[i
].enabled
!= NULL
2302 && *debug_displays
[i
].enabled
)
2304 struct dwarf_section
*sec
= &debug_displays
[i
].section
;
2306 if (strcmp (sec
->uncompressed_name
, match
) == 0)
2307 sec
->name
= sec
->uncompressed_name
;
2309 sec
->name
= sec
->compressed_name
;
2310 if (load_specific_debug_section ((enum dwarf_section_display_enum
) i
,
2313 debug_displays
[i
].display (sec
, abfd
);
2315 if (i
!= info
&& i
!= abbrev
)
2316 free_debug_section ((enum dwarf_section_display_enum
) i
);
2322 /* Dump the dwarf debugging information. */
2325 dump_dwarf (bfd
*abfd
)
2327 is_relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
2329 eh_addr_size
= bfd_arch_bits_per_address (abfd
) / 8;
2331 if (bfd_big_endian (abfd
))
2332 byte_get
= byte_get_big_endian
;
2333 else if (bfd_little_endian (abfd
))
2334 byte_get
= byte_get_little_endian
;
2338 switch (bfd_get_arch (abfd
))
2341 switch (bfd_get_mach (abfd
))
2343 case bfd_mach_x86_64
:
2344 case bfd_mach_x86_64_intel_syntax
:
2345 init_dwarf_regnames_x86_64 ();
2349 init_dwarf_regnames_i386 ();
2358 bfd_map_over_sections (abfd
, dump_dwarf_section
, NULL
);
2360 free_debug_memory ();
2363 /* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
2364 it. Return NULL on failure. */
2367 read_section_stabs (bfd
*abfd
, const char *sect_name
, bfd_size_type
*size_ptr
)
2373 stabsect
= bfd_get_section_by_name (abfd
, sect_name
);
2374 if (stabsect
== NULL
)
2376 printf (_("No %s section present\n\n"), sect_name
);
2380 size
= bfd_section_size (abfd
, stabsect
);
2381 contents
= (char *) xmalloc (size
);
2383 if (! bfd_get_section_contents (abfd
, stabsect
, contents
, 0, size
))
2385 non_fatal (_("reading %s section of %s failed: %s"),
2386 sect_name
, bfd_get_filename (abfd
),
2387 bfd_errmsg (bfd_get_error ()));
2398 /* Stabs entries use a 12 byte format:
2399 4 byte string table index
2401 1 byte stab other field
2402 2 byte stab desc field
2404 FIXME: This will have to change for a 64 bit object format. */
2406 #define STRDXOFF (0)
2408 #define OTHEROFF (5)
2411 #define STABSIZE (12)
2413 /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
2414 using string table section STRSECT_NAME (in `strtab'). */
2417 print_section_stabs (bfd
*abfd
,
2418 const char *stabsect_name
,
2419 unsigned *string_offset_ptr
)
2422 unsigned file_string_table_offset
= 0;
2423 unsigned next_file_string_table_offset
= *string_offset_ptr
;
2424 bfd_byte
*stabp
, *stabs_end
;
2427 stabs_end
= stabp
+ stab_size
;
2429 printf (_("Contents of %s section:\n\n"), stabsect_name
);
2430 printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
2432 /* Loop through all symbols and print them.
2434 We start the index at -1 because there is a dummy symbol on
2435 the front of stabs-in-{coff,elf} sections that supplies sizes. */
2436 for (i
= -1; stabp
< stabs_end
; stabp
+= STABSIZE
, i
++)
2440 unsigned char type
, other
;
2441 unsigned short desc
;
2444 strx
= bfd_h_get_32 (abfd
, stabp
+ STRDXOFF
);
2445 type
= bfd_h_get_8 (abfd
, stabp
+ TYPEOFF
);
2446 other
= bfd_h_get_8 (abfd
, stabp
+ OTHEROFF
);
2447 desc
= bfd_h_get_16 (abfd
, stabp
+ DESCOFF
);
2448 value
= bfd_h_get_32 (abfd
, stabp
+ VALOFF
);
2450 printf ("\n%-6d ", i
);
2451 /* Either print the stab name, or, if unnamed, print its number
2452 again (makes consistent formatting for tools like awk). */
2453 name
= bfd_get_stab_name (type
);
2455 printf ("%-6s", name
);
2456 else if (type
== N_UNDF
)
2459 printf ("%-6d", type
);
2460 printf (" %-6d %-6d ", other
, desc
);
2461 bfd_printf_vma (abfd
, value
);
2462 printf (" %-6lu", strx
);
2464 /* Symbols with type == 0 (N_UNDF) specify the length of the
2465 string table associated with this file. We use that info
2466 to know how to relocate the *next* file's string table indices. */
2469 file_string_table_offset
= next_file_string_table_offset
;
2470 next_file_string_table_offset
+= value
;
2474 /* Using the (possibly updated) string table offset, print the
2475 string (if any) associated with this symbol. */
2476 if ((strx
+ file_string_table_offset
) < stabstr_size
)
2477 printf (" %s", &strtab
[strx
+ file_string_table_offset
]);
2483 *string_offset_ptr
= next_file_string_table_offset
;
2488 const char * section_name
;
2489 const char * string_section_name
;
2490 unsigned string_offset
;
2495 find_stabs_section (bfd
*abfd
, asection
*section
, void *names
)
2498 stab_section_names
* sought
= (stab_section_names
*) names
;
2500 /* Check for section names for which stabsect_name is a prefix, to
2501 handle .stab.N, etc. */
2502 len
= strlen (sought
->section_name
);
2504 /* If the prefix matches, and the files section name ends with a
2505 nul or a digit, then we match. I.e., we want either an exact
2506 match or a section followed by a number. */
2507 if (strncmp (sought
->section_name
, section
->name
, len
) == 0
2508 && (section
->name
[len
] == 0
2509 || (section
->name
[len
] == '.' && ISDIGIT (section
->name
[len
+ 1]))))
2512 strtab
= read_section_stabs (abfd
, sought
->string_section_name
,
2517 stabs
= (bfd_byte
*) read_section_stabs (abfd
, section
->name
,
2520 print_section_stabs (abfd
, section
->name
, &sought
->string_offset
);
2526 dump_stabs_section (bfd
*abfd
, char *stabsect_name
, char *strsect_name
)
2528 stab_section_names s
;
2530 s
.section_name
= stabsect_name
;
2531 s
.string_section_name
= strsect_name
;
2532 s
.string_offset
= 0;
2534 bfd_map_over_sections (abfd
, find_stabs_section
, & s
);
2540 /* Dump the any sections containing stabs debugging information. */
2543 dump_stabs (bfd
*abfd
)
2545 dump_stabs_section (abfd
, ".stab", ".stabstr");
2546 dump_stabs_section (abfd
, ".stab.excl", ".stab.exclstr");
2547 dump_stabs_section (abfd
, ".stab.index", ".stab.indexstr");
2550 dump_stabs_section (abfd
, "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr");
2552 dump_stabs_section (abfd
, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
2556 dump_bfd_header (bfd
*abfd
)
2560 printf (_("architecture: %s, "),
2561 bfd_printable_arch_mach (bfd_get_arch (abfd
),
2562 bfd_get_mach (abfd
)));
2563 printf (_("flags 0x%08x:\n"), abfd
->flags
& ~BFD_FLAGS_FOR_BFD_USE_MASK
);
2565 #define PF(x, y) if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
2566 PF (HAS_RELOC
, "HAS_RELOC");
2567 PF (EXEC_P
, "EXEC_P");
2568 PF (HAS_LINENO
, "HAS_LINENO");
2569 PF (HAS_DEBUG
, "HAS_DEBUG");
2570 PF (HAS_SYMS
, "HAS_SYMS");
2571 PF (HAS_LOCALS
, "HAS_LOCALS");
2572 PF (DYNAMIC
, "DYNAMIC");
2573 PF (WP_TEXT
, "WP_TEXT");
2574 PF (D_PAGED
, "D_PAGED");
2575 PF (BFD_IS_RELAXABLE
, "BFD_IS_RELAXABLE");
2576 PF (HAS_LOAD_PAGE
, "HAS_LOAD_PAGE");
2577 printf (_("\nstart address 0x"));
2578 bfd_printf_vma (abfd
, abfd
->start_address
);
2584 dump_bfd_private_header (bfd
*abfd
)
2586 bfd_print_private_bfd_data (abfd
, stdout
);
2590 /* Display a section in hexadecimal format with associated characters.
2591 Each line prefixed by the zero padded address. */
2594 dump_section (bfd
*abfd
, asection
*section
, void *dummy ATTRIBUTE_UNUSED
)
2597 bfd_size_type datasize
;
2598 bfd_size_type addr_offset
;
2599 bfd_size_type start_offset
;
2600 bfd_size_type stop_offset
;
2601 unsigned int opb
= bfd_octets_per_byte (abfd
);
2602 /* Bytes per line. */
2603 const int onaline
= 16;
2608 if ((section
->flags
& SEC_HAS_CONTENTS
) == 0)
2611 if (! process_section_p (section
))
2614 if ((datasize
= bfd_section_size (abfd
, section
)) == 0)
2617 /* Compute the address range to display. */
2618 if (start_address
== (bfd_vma
) -1
2619 || start_address
< section
->vma
)
2622 start_offset
= start_address
- section
->vma
;
2624 if (stop_address
== (bfd_vma
) -1)
2625 stop_offset
= datasize
/ opb
;
2628 if (stop_address
< section
->vma
)
2631 stop_offset
= stop_address
- section
->vma
;
2633 if (stop_offset
> datasize
/ opb
)
2634 stop_offset
= datasize
/ opb
;
2637 if (start_offset
>= stop_offset
)
2640 printf (_("Contents of section %s:"), section
->name
);
2641 if (display_file_offsets
)
2642 printf (_(" (Starting at file offset: 0x%lx)"),
2643 (unsigned long) (section
->filepos
+ start_offset
));
2646 if (!bfd_get_full_section_contents (abfd
, section
, &data
))
2648 non_fatal (_("Reading section failed"));
2654 bfd_sprintf_vma (abfd
, buf
, start_offset
+ section
->vma
);
2655 if (strlen (buf
) >= sizeof (buf
))
2659 while (buf
[count
] == '0' && buf
[count
+1] != '\0')
2661 count
= strlen (buf
) - count
;
2665 bfd_sprintf_vma (abfd
, buf
, stop_offset
+ section
->vma
- 1);
2666 if (strlen (buf
) >= sizeof (buf
))
2670 while (buf
[count
] == '0' && buf
[count
+1] != '\0')
2672 count
= strlen (buf
) - count
;
2676 for (addr_offset
= start_offset
;
2677 addr_offset
< stop_offset
; addr_offset
+= onaline
/ opb
)
2681 bfd_sprintf_vma (abfd
, buf
, (addr_offset
+ section
->vma
));
2682 count
= strlen (buf
);
2683 if ((size_t) count
>= sizeof (buf
))
2687 while (count
< width
)
2692 fputs (buf
+ count
- width
, stdout
);
2695 for (j
= addr_offset
* opb
;
2696 j
< addr_offset
* opb
+ onaline
; j
++)
2698 if (j
< stop_offset
* opb
)
2699 printf ("%02x", (unsigned) (data
[j
]));
2707 for (j
= addr_offset
* opb
;
2708 j
< addr_offset
* opb
+ onaline
; j
++)
2710 if (j
>= stop_offset
* opb
)
2713 printf ("%c", ISPRINT (data
[j
]) ? data
[j
] : '.');
2720 /* Actually display the various requested regions. */
2723 dump_data (bfd
*abfd
)
2725 bfd_map_over_sections (abfd
, dump_section
, NULL
);
2728 /* Should perhaps share code and display with nm? */
2731 dump_symbols (bfd
*abfd ATTRIBUTE_UNUSED
, bfd_boolean dynamic
)
2740 max_count
= dynsymcount
;
2741 printf ("DYNAMIC SYMBOL TABLE:\n");
2746 max_count
= symcount
;
2747 printf ("SYMBOL TABLE:\n");
2751 printf (_("no symbols\n"));
2753 for (count
= 0; count
< max_count
; count
++)
2757 if (*current
== NULL
)
2758 printf (_("no information for symbol number %ld\n"), count
);
2760 else if ((cur_bfd
= bfd_asymbol_bfd (*current
)) == NULL
)
2761 printf (_("could not determine the type of symbol number %ld\n"),
2764 else if (process_section_p ((* current
)->section
)
2765 && (dump_special_syms
2766 || !bfd_is_target_special_symbol (cur_bfd
, *current
)))
2768 const char *name
= (*current
)->name
;
2770 if (do_demangle
&& name
!= NULL
&& *name
!= '\0')
2774 /* If we want to demangle the name, we demangle it
2775 here, and temporarily clobber it while calling
2776 bfd_print_symbol. FIXME: This is a gross hack. */
2777 alloc
= bfd_demangle (cur_bfd
, name
, DMGL_ANSI
| DMGL_PARAMS
);
2779 (*current
)->name
= alloc
;
2780 bfd_print_symbol (cur_bfd
, stdout
, *current
,
2781 bfd_print_symbol_all
);
2784 (*current
)->name
= name
;
2789 bfd_print_symbol (cur_bfd
, stdout
, *current
,
2790 bfd_print_symbol_all
);
2800 dump_reloc_set (bfd
*abfd
, asection
*sec
, arelent
**relpp
, long relcount
)
2803 char *last_filename
, *last_functionname
;
2804 unsigned int last_line
;
2806 /* Get column headers lined up reasonably. */
2814 bfd_sprintf_vma (abfd
, buf
, (bfd_vma
) -1);
2815 width
= strlen (buf
) - 7;
2817 printf ("OFFSET %*s TYPE %*s VALUE \n", width
, "", 12, "");
2820 last_filename
= NULL
;
2821 last_functionname
= NULL
;
2824 for (p
= relpp
; relcount
&& *p
!= NULL
; p
++, relcount
--)
2827 const char *filename
, *functionname
;
2828 unsigned int linenumber
;
2829 const char *sym_name
;
2830 const char *section_name
;
2832 if (start_address
!= (bfd_vma
) -1
2833 && q
->address
< start_address
)
2835 if (stop_address
!= (bfd_vma
) -1
2836 && q
->address
> stop_address
)
2839 if (with_line_numbers
2841 && bfd_find_nearest_line (abfd
, sec
, syms
, q
->address
,
2842 &filename
, &functionname
, &linenumber
))
2844 if (functionname
!= NULL
2845 && (last_functionname
== NULL
2846 || strcmp (functionname
, last_functionname
) != 0))
2848 printf ("%s():\n", functionname
);
2849 if (last_functionname
!= NULL
)
2850 free (last_functionname
);
2851 last_functionname
= xstrdup (functionname
);
2855 && (linenumber
!= last_line
2856 || (filename
!= NULL
2857 && last_filename
!= NULL
2858 && strcmp (filename
, last_filename
) != 0)))
2860 printf ("%s:%u\n", filename
== NULL
? "???" : filename
, linenumber
);
2861 last_line
= linenumber
;
2862 if (last_filename
!= NULL
)
2863 free (last_filename
);
2864 if (filename
== NULL
)
2865 last_filename
= NULL
;
2867 last_filename
= xstrdup (filename
);
2871 if (q
->sym_ptr_ptr
&& *q
->sym_ptr_ptr
)
2873 sym_name
= (*(q
->sym_ptr_ptr
))->name
;
2874 section_name
= (*(q
->sym_ptr_ptr
))->section
->name
;
2879 section_name
= NULL
;
2882 bfd_printf_vma (abfd
, q
->address
);
2883 if (q
->howto
== NULL
)
2884 printf (" *unknown* ");
2885 else if (q
->howto
->name
)
2886 printf (" %-16s ", q
->howto
->name
);
2888 printf (" %-16d ", q
->howto
->type
);
2892 objdump_print_symname (abfd
, NULL
, *q
->sym_ptr_ptr
);
2896 if (section_name
== NULL
)
2897 section_name
= "*unknown*";
2898 printf ("[%s]", section_name
);
2904 bfd_printf_vma (abfd
, q
->addend
);
2912 dump_relocs_in_section (bfd
*abfd
,
2914 void *dummy ATTRIBUTE_UNUSED
)
2920 if ( bfd_is_abs_section (section
)
2921 || bfd_is_und_section (section
)
2922 || bfd_is_com_section (section
)
2923 || (! process_section_p (section
))
2924 || ((section
->flags
& SEC_RELOC
) == 0))
2927 relsize
= bfd_get_reloc_upper_bound (abfd
, section
);
2929 bfd_fatal (bfd_get_filename (abfd
));
2931 printf ("RELOCATION RECORDS FOR [%s]:", section
->name
);
2935 printf (" (none)\n\n");
2939 relpp
= (arelent
**) xmalloc (relsize
);
2940 relcount
= bfd_canonicalize_reloc (abfd
, section
, relpp
, syms
);
2943 bfd_fatal (bfd_get_filename (abfd
));
2944 else if (relcount
== 0)
2945 printf (" (none)\n\n");
2949 dump_reloc_set (abfd
, section
, relpp
, relcount
);
2956 dump_relocs (bfd
*abfd
)
2958 bfd_map_over_sections (abfd
, dump_relocs_in_section
, NULL
);
2962 dump_dynamic_relocs (bfd
*abfd
)
2968 relsize
= bfd_get_dynamic_reloc_upper_bound (abfd
);
2970 bfd_fatal (bfd_get_filename (abfd
));
2972 printf ("DYNAMIC RELOCATION RECORDS");
2975 printf (" (none)\n\n");
2978 relpp
= (arelent
**) xmalloc (relsize
);
2979 relcount
= bfd_canonicalize_dynamic_reloc (abfd
, relpp
, dynsyms
);
2982 bfd_fatal (bfd_get_filename (abfd
));
2983 else if (relcount
== 0)
2984 printf (" (none)\n\n");
2988 dump_reloc_set (abfd
, NULL
, relpp
, relcount
);
2995 /* Creates a table of paths, to search for source files. */
2998 add_include_path (const char *path
)
3002 include_path_count
++;
3003 include_paths
= (const char **)
3004 xrealloc (include_paths
, include_path_count
* sizeof (*include_paths
));
3005 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3006 if (path
[1] == ':' && path
[2] == 0)
3007 path
= concat (path
, ".", (const char *) 0);
3009 include_paths
[include_path_count
- 1] = path
;
3013 adjust_addresses (bfd
*abfd ATTRIBUTE_UNUSED
,
3017 if ((section
->flags
& SEC_DEBUGGING
) == 0)
3019 bfd_boolean
*has_reloc_p
= (bfd_boolean
*) arg
;
3020 section
->vma
+= adjust_section_vma
;
3022 section
->lma
+= adjust_section_vma
;
3026 /* Dump selected contents of ABFD. */
3029 dump_bfd (bfd
*abfd
)
3031 /* If we are adjusting section VMA's, change them all now. Changing
3032 the BFD information is a hack. However, we must do it, or
3033 bfd_find_nearest_line will not do the right thing. */
3034 if (adjust_section_vma
!= 0)
3036 bfd_boolean has_reloc
= (abfd
->flags
& HAS_RELOC
);
3037 bfd_map_over_sections (abfd
, adjust_addresses
, &has_reloc
);
3040 if (! dump_debugging_tags
)
3041 printf (_("\n%s: file format %s\n"), bfd_get_filename (abfd
),
3044 print_arelt_descr (stdout
, abfd
, TRUE
);
3045 if (dump_file_header
)
3046 dump_bfd_header (abfd
);
3047 if (dump_private_headers
)
3048 dump_bfd_private_header (abfd
);
3049 if (! dump_debugging_tags
)
3051 if (dump_section_headers
)
3052 dump_headers (abfd
);
3058 || dump_dwarf_section_info
)
3059 syms
= slurp_symtab (abfd
);
3060 if (dump_dynamic_symtab
|| dump_dynamic_reloc_info
3061 || (disassemble
&& bfd_get_dynamic_symtab_upper_bound (abfd
) > 0))
3062 dynsyms
= slurp_dynamic_symtab (abfd
);
3065 synthcount
= bfd_get_synthetic_symtab (abfd
, symcount
, syms
,
3066 dynsymcount
, dynsyms
, &synthsyms
);
3072 dump_symbols (abfd
, FALSE
);
3073 if (dump_dynamic_symtab
)
3074 dump_symbols (abfd
, TRUE
);
3075 if (dump_dwarf_section_info
)
3077 if (dump_stab_section_info
)
3079 if (dump_reloc_info
&& ! disassemble
)
3081 if (dump_dynamic_reloc_info
&& ! disassemble
)
3082 dump_dynamic_relocs (abfd
);
3083 if (dump_section_contents
)
3086 disassemble_data (abfd
);
3092 dhandle
= read_debugging_info (abfd
, syms
, symcount
, TRUE
);
3093 if (dhandle
!= NULL
)
3095 if (!print_debugging_info (stdout
, dhandle
, abfd
, syms
,
3097 dump_debugging_tags
? TRUE
: FALSE
))
3099 non_fatal (_("%s: printing debugging information failed"),
3100 bfd_get_filename (abfd
));
3104 /* PR 6483: If there was no STABS or IEEE debug
3105 info in the file, try DWARF instead. */
3106 else if (! dump_dwarf_section_info
)
3136 display_bfd (bfd
*abfd
)
3140 if (bfd_check_format_matches (abfd
, bfd_object
, &matching
))
3146 if (bfd_get_error () == bfd_error_file_ambiguously_recognized
)
3148 nonfatal (bfd_get_filename (abfd
));
3149 list_matching_formats (matching
);
3154 if (bfd_get_error () != bfd_error_file_not_recognized
)
3156 nonfatal (bfd_get_filename (abfd
));
3160 if (bfd_check_format_matches (abfd
, bfd_core
, &matching
))
3166 nonfatal (bfd_get_filename (abfd
));
3168 if (bfd_get_error () == bfd_error_file_ambiguously_recognized
)
3170 list_matching_formats (matching
);
3176 display_file (char *filename
, char *target
)
3181 if (get_file_size (filename
) < 1)
3187 file
= bfd_openr (filename
, target
);
3190 nonfatal (filename
);
3194 /* Decompress sections unless dumping the section contents. */
3195 if (!dump_section_contents
)
3196 file
->flags
|= BFD_DECOMPRESS
;
3198 /* If the file is an archive, process all of its elements. */
3199 if (bfd_check_format (file
, bfd_archive
))
3201 bfd
*last_arfile
= NULL
;
3203 printf (_("In archive %s:\n"), bfd_get_filename (file
));
3206 bfd_set_error (bfd_error_no_error
);
3208 arfile
= bfd_openr_next_archived_file (file
, arfile
);
3211 if (bfd_get_error () != bfd_error_no_more_archived_files
)
3212 nonfatal (bfd_get_filename (file
));
3216 display_bfd (arfile
);
3218 if (last_arfile
!= NULL
)
3219 bfd_close (last_arfile
);
3220 last_arfile
= arfile
;
3223 if (last_arfile
!= NULL
)
3224 bfd_close (last_arfile
);
3233 main (int argc
, char **argv
)
3236 char *target
= default_target
;
3237 bfd_boolean seenflag
= FALSE
;
3239 #if defined (HAVE_SETLOCALE)
3240 #if defined (HAVE_LC_MESSAGES)
3241 setlocale (LC_MESSAGES
, "");
3243 setlocale (LC_CTYPE
, "");
3246 bindtextdomain (PACKAGE
, LOCALEDIR
);
3247 textdomain (PACKAGE
);
3249 program_name
= *argv
;
3250 xmalloc_set_program_name (program_name
);
3252 START_PROGRESS (program_name
, 0);
3254 expandargv (&argc
, &argv
);
3257 set_default_bfd_target ();
3259 while ((c
= getopt_long (argc
, argv
,
3260 "pib:m:M:VvCdDlfFaHhrRtTxsSI:j:wE:zgeGW::",
3261 long_options
, (int *) 0))
3267 break; /* We've been given a long option. */
3272 if (disassembler_options
)
3273 /* Ignore potential memory leak for now. */
3274 disassembler_options
= concat (disassembler_options
, ",",
3275 optarg
, (const char *) NULL
);
3277 disassembler_options
= optarg
;
3283 display_file_offsets
= TRUE
;
3286 with_line_numbers
= TRUE
;
3295 enum demangling_styles style
;
3297 style
= cplus_demangle_name_to_style (optarg
);
3298 if (style
== unknown_demangling
)
3299 fatal (_("unknown demangling style `%s'"),
3302 cplus_demangle_set_style (style
);
3308 case OPTION_ADJUST_VMA
:
3309 adjust_section_vma
= parse_vma (optarg
, "--adjust-vma");
3311 case OPTION_START_ADDRESS
:
3312 start_address
= parse_vma (optarg
, "--start-address");
3313 if ((stop_address
!= (bfd_vma
) -1) && stop_address
<= start_address
)
3314 fatal (_("error: the start address should be before the end address"));
3316 case OPTION_STOP_ADDRESS
:
3317 stop_address
= parse_vma (optarg
, "--stop-address");
3318 if ((start_address
!= (bfd_vma
) -1) && stop_address
<= start_address
)
3319 fatal (_("error: the stop address should be after the start address"));
3323 prefix_length
= strlen (prefix
);
3324 /* Remove an unnecessary trailing '/' */
3325 while (IS_DIR_SEPARATOR (prefix
[prefix_length
- 1]))
3328 case OPTION_PREFIX_STRIP
:
3329 prefix_strip
= atoi (optarg
);
3330 if (prefix_strip
< 0)
3331 fatal (_("error: prefix strip must be non-negative"));
3333 case OPTION_INSN_WIDTH
:
3334 insn_width
= strtoul (optarg
, NULL
, 0);
3335 if (insn_width
<= 0)
3336 fatal (_("error: instruction width must be positive"));
3339 if (strcmp (optarg
, "B") == 0)
3340 endian
= BFD_ENDIAN_BIG
;
3341 else if (strcmp (optarg
, "L") == 0)
3342 endian
= BFD_ENDIAN_LITTLE
;
3345 nonfatal (_("unrecognized -E option"));
3350 if (strncmp (optarg
, "big", strlen (optarg
)) == 0)
3351 endian
= BFD_ENDIAN_BIG
;
3352 else if (strncmp (optarg
, "little", strlen (optarg
)) == 0)
3353 endian
= BFD_ENDIAN_LITTLE
;
3356 non_fatal (_("unrecognized --endian type `%s'"), optarg
);
3363 dump_file_header
= TRUE
;
3367 formats_info
= TRUE
;
3371 add_include_path (optarg
);
3374 dump_private_headers
= TRUE
;
3378 dump_private_headers
= TRUE
;
3380 dump_reloc_info
= TRUE
;
3381 dump_file_header
= TRUE
;
3382 dump_ar_hdrs
= TRUE
;
3383 dump_section_headers
= TRUE
;
3391 dump_dynamic_symtab
= TRUE
;
3399 disassemble_zeroes
= TRUE
;
3403 disassemble_all
= TRUE
;
3408 with_source_code
= TRUE
;
3417 dump_debugging_tags
= 1;
3422 dump_dwarf_section_info
= TRUE
;
3425 dwarf_select_sections_by_letters (optarg
);
3427 dwarf_select_sections_all ();
3430 dump_dwarf_section_info
= TRUE
;
3433 dwarf_select_sections_by_names (optarg
);
3435 dwarf_select_sections_all ();
3438 dump_stab_section_info
= TRUE
;
3442 dump_section_contents
= TRUE
;
3446 dump_reloc_info
= TRUE
;
3450 dump_dynamic_reloc_info
= TRUE
;
3454 dump_ar_hdrs
= TRUE
;
3458 dump_section_headers
= TRUE
;
3466 show_version
= TRUE
;
3476 print_version ("objdump");
3482 exit_status
= display_info ();
3486 display_file ("a.out", target
);
3488 for (; optind
< argc
;)
3489 display_file (argv
[optind
++], target
);
3494 END_PROGRESS (program_name
);