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"));
514 if (abfd
->flags
& HAS_LOAD_PAGE
)
518 bfd_map_over_sections (abfd
, dump_section_header
, NULL
);
522 slurp_symtab (bfd
*abfd
)
527 if (!(bfd_get_file_flags (abfd
) & HAS_SYMS
))
533 storage
= bfd_get_symtab_upper_bound (abfd
);
535 bfd_fatal (bfd_get_filename (abfd
));
537 sy
= (asymbol
**) xmalloc (storage
);
539 symcount
= bfd_canonicalize_symtab (abfd
, sy
);
541 bfd_fatal (bfd_get_filename (abfd
));
545 /* Read in the dynamic symbols. */
548 slurp_dynamic_symtab (bfd
*abfd
)
553 storage
= bfd_get_dynamic_symtab_upper_bound (abfd
);
556 if (!(bfd_get_file_flags (abfd
) & DYNAMIC
))
558 non_fatal (_("%s: not a dynamic object"), bfd_get_filename (abfd
));
564 bfd_fatal (bfd_get_filename (abfd
));
567 sy
= (asymbol
**) xmalloc (storage
);
569 dynsymcount
= bfd_canonicalize_dynamic_symtab (abfd
, sy
);
571 bfd_fatal (bfd_get_filename (abfd
));
575 /* Filter out (in place) symbols that are useless for disassembly.
576 COUNT is the number of elements in SYMBOLS.
577 Return the number of useful symbols. */
580 remove_useless_symbols (asymbol
**symbols
, long count
)
582 asymbol
**in_ptr
= symbols
, **out_ptr
= symbols
;
586 asymbol
*sym
= *in_ptr
++;
588 if (sym
->name
== NULL
|| sym
->name
[0] == '\0')
590 if (sym
->flags
& (BSF_DEBUGGING
| BSF_SECTION_SYM
))
592 if (bfd_is_und_section (sym
->section
)
593 || bfd_is_com_section (sym
->section
))
598 return out_ptr
- symbols
;
601 /* Sort symbols into value order. */
604 compare_symbols (const void *ap
, const void *bp
)
606 const asymbol
*a
= * (const asymbol
**) ap
;
607 const asymbol
*b
= * (const asymbol
**) bp
;
617 if (bfd_asymbol_value (a
) > bfd_asymbol_value (b
))
619 else if (bfd_asymbol_value (a
) < bfd_asymbol_value (b
))
622 if (a
->section
> b
->section
)
624 else if (a
->section
< b
->section
)
627 an
= bfd_asymbol_name (a
);
628 bn
= bfd_asymbol_name (b
);
632 /* The symbols gnu_compiled and gcc2_compiled convey no real
633 information, so put them after other symbols with the same value. */
634 af
= (strstr (an
, "gnu_compiled") != NULL
635 || strstr (an
, "gcc2_compiled") != NULL
);
636 bf
= (strstr (bn
, "gnu_compiled") != NULL
637 || strstr (bn
, "gcc2_compiled") != NULL
);
644 /* We use a heuristic for the file name, to try to sort it after
645 more useful symbols. It may not work on non Unix systems, but it
646 doesn't really matter; the only difference is precisely which
647 symbol names get printed. */
649 #define file_symbol(s, sn, snl) \
650 (((s)->flags & BSF_FILE) != 0 \
651 || ((sn)[(snl) - 2] == '.' \
652 && ((sn)[(snl) - 1] == 'o' \
653 || (sn)[(snl) - 1] == 'a')))
655 af
= file_symbol (a
, an
, anl
);
656 bf
= file_symbol (b
, bn
, bnl
);
663 /* Try to sort global symbols before local symbols before function
664 symbols before debugging symbols. */
669 if ((aflags
& BSF_DEBUGGING
) != (bflags
& BSF_DEBUGGING
))
671 if ((aflags
& BSF_DEBUGGING
) != 0)
676 if ((aflags
& BSF_FUNCTION
) != (bflags
& BSF_FUNCTION
))
678 if ((aflags
& BSF_FUNCTION
) != 0)
683 if ((aflags
& BSF_LOCAL
) != (bflags
& BSF_LOCAL
))
685 if ((aflags
& BSF_LOCAL
) != 0)
690 if ((aflags
& BSF_GLOBAL
) != (bflags
& BSF_GLOBAL
))
692 if ((aflags
& BSF_GLOBAL
) != 0)
698 /* Symbols that start with '.' might be section names, so sort them
699 after symbols that don't start with '.'. */
700 if (an
[0] == '.' && bn
[0] != '.')
702 if (an
[0] != '.' && bn
[0] == '.')
705 /* Finally, if we can't distinguish them in any other way, try to
706 get consistent results by sorting the symbols by name. */
707 return strcmp (an
, bn
);
710 /* Sort relocs into address order. */
713 compare_relocs (const void *ap
, const void *bp
)
715 const arelent
*a
= * (const arelent
**) ap
;
716 const arelent
*b
= * (const arelent
**) bp
;
718 if (a
->address
> b
->address
)
720 else if (a
->address
< b
->address
)
723 /* So that associated relocations tied to the same address show up
724 in the correct order, we don't do any further sorting. */
733 /* Print an address (VMA) to the output stream in INFO.
734 If SKIP_ZEROES is TRUE, omit leading zeroes. */
737 objdump_print_value (bfd_vma vma
, struct disassemble_info
*inf
,
738 bfd_boolean skip_zeroes
)
742 struct objdump_disasm_info
*aux
;
744 aux
= (struct objdump_disasm_info
*) inf
->application_data
;
745 bfd_sprintf_vma (aux
->abfd
, buf
, vma
);
750 for (p
= buf
; *p
== '0'; ++p
)
755 (*inf
->fprintf_func
) (inf
->stream
, "%s", p
);
758 /* Print the name of a symbol. */
761 objdump_print_symname (bfd
*abfd
, struct disassemble_info
*inf
,
768 name
= bfd_asymbol_name (sym
);
769 if (do_demangle
&& name
[0] != '\0')
771 /* Demangle the name. */
772 alloc
= bfd_demangle (abfd
, name
, DMGL_ANSI
| DMGL_PARAMS
);
778 (*inf
->fprintf_func
) (inf
->stream
, "%s", name
);
786 /* Locate a symbol given a bfd and a section (from INFO->application_data),
787 and a VMA. If INFO->application_data->require_sec is TRUE, then always
788 require the symbol to be in the section. Returns NULL if there is no
789 suitable symbol. If PLACE is not NULL, then *PLACE is set to the index
790 of the symbol in sorted_syms. */
793 find_symbol_for_address (bfd_vma vma
,
794 struct disassemble_info
*inf
,
797 /* @@ Would it speed things up to cache the last two symbols returned,
798 and maybe their address ranges? For many processors, only one memory
799 operand can be present at a time, so the 2-entry cache wouldn't be
800 constantly churned by code doing heavy memory accesses. */
802 /* Indices in `sorted_syms'. */
804 long max_count
= sorted_symcount
;
806 struct objdump_disasm_info
*aux
;
810 bfd_boolean want_section
;
812 if (sorted_symcount
< 1)
815 aux
= (struct objdump_disasm_info
*) inf
->application_data
;
818 opb
= inf
->octets_per_byte
;
820 /* Perform a binary search looking for the closest symbol to the
821 required value. We are searching the range (min, max_count]. */
822 while (min
+ 1 < max_count
)
826 thisplace
= (max_count
+ min
) / 2;
827 sym
= sorted_syms
[thisplace
];
829 if (bfd_asymbol_value (sym
) > vma
)
830 max_count
= thisplace
;
831 else if (bfd_asymbol_value (sym
) < vma
)
840 /* The symbol we want is now in min, the low end of the range we
841 were searching. If there are several symbols with the same
842 value, we want the first one. */
845 && (bfd_asymbol_value (sorted_syms
[thisplace
])
846 == bfd_asymbol_value (sorted_syms
[thisplace
- 1])))
849 /* Prefer a symbol in the current section if we have multple symbols
850 with the same value, as can occur with overlays or zero size
853 while (min
< max_count
854 && (bfd_asymbol_value (sorted_syms
[min
])
855 == bfd_asymbol_value (sorted_syms
[thisplace
])))
857 if (sorted_syms
[min
]->section
== sec
858 && inf
->symbol_is_valid (sorted_syms
[min
], inf
))
865 return sorted_syms
[thisplace
];
870 /* If the file is relocatable, and the symbol could be from this
871 section, prefer a symbol from this section over symbols from
872 others, even if the other symbol's value might be closer.
874 Note that this may be wrong for some symbol references if the
875 sections have overlapping memory ranges, but in that case there's
876 no way to tell what's desired without looking at the relocation
879 Also give the target a chance to reject symbols. */
880 want_section
= (aux
->require_sec
881 || ((abfd
->flags
& HAS_RELOC
) != 0
882 && vma
>= bfd_get_section_vma (abfd
, sec
)
883 && vma
< (bfd_get_section_vma (abfd
, sec
)
884 + bfd_section_size (abfd
, sec
) / opb
)));
885 if ((sorted_syms
[thisplace
]->section
!= sec
&& want_section
)
886 || ! inf
->symbol_is_valid (sorted_syms
[thisplace
], inf
))
889 long newplace
= sorted_symcount
;
891 for (i
= min
- 1; i
>= 0; i
--)
893 if ((sorted_syms
[i
]->section
== sec
|| !want_section
)
894 && inf
->symbol_is_valid (sorted_syms
[i
], inf
))
896 if (newplace
== sorted_symcount
)
899 if (bfd_asymbol_value (sorted_syms
[i
])
900 != bfd_asymbol_value (sorted_syms
[newplace
]))
903 /* Remember this symbol and keep searching until we reach
904 an earlier address. */
909 if (newplace
!= sorted_symcount
)
910 thisplace
= newplace
;
913 /* We didn't find a good symbol with a smaller value.
914 Look for one with a larger value. */
915 for (i
= thisplace
+ 1; i
< sorted_symcount
; i
++)
917 if ((sorted_syms
[i
]->section
== sec
|| !want_section
)
918 && inf
->symbol_is_valid (sorted_syms
[i
], inf
))
926 if ((sorted_syms
[thisplace
]->section
!= sec
&& want_section
)
927 || ! inf
->symbol_is_valid (sorted_syms
[thisplace
], inf
))
928 /* There is no suitable symbol. */
935 return sorted_syms
[thisplace
];
938 /* Print an address and the offset to the nearest symbol. */
941 objdump_print_addr_with_sym (bfd
*abfd
, asection
*sec
, asymbol
*sym
,
942 bfd_vma vma
, struct disassemble_info
*inf
,
943 bfd_boolean skip_zeroes
)
945 objdump_print_value (vma
, inf
, skip_zeroes
);
951 (*inf
->fprintf_func
) (inf
->stream
, " <%s",
952 bfd_get_section_name (abfd
, sec
));
953 secaddr
= bfd_get_section_vma (abfd
, sec
);
956 (*inf
->fprintf_func
) (inf
->stream
, "-0x");
957 objdump_print_value (secaddr
- vma
, inf
, TRUE
);
959 else if (vma
> secaddr
)
961 (*inf
->fprintf_func
) (inf
->stream
, "+0x");
962 objdump_print_value (vma
- secaddr
, inf
, TRUE
);
964 (*inf
->fprintf_func
) (inf
->stream
, ">");
968 (*inf
->fprintf_func
) (inf
->stream
, " <");
969 objdump_print_symname (abfd
, inf
, sym
);
970 if (bfd_asymbol_value (sym
) > vma
)
972 (*inf
->fprintf_func
) (inf
->stream
, "-0x");
973 objdump_print_value (bfd_asymbol_value (sym
) - vma
, inf
, TRUE
);
975 else if (vma
> bfd_asymbol_value (sym
))
977 (*inf
->fprintf_func
) (inf
->stream
, "+0x");
978 objdump_print_value (vma
- bfd_asymbol_value (sym
), inf
, TRUE
);
980 (*inf
->fprintf_func
) (inf
->stream
, ">");
983 if (display_file_offsets
)
984 inf
->fprintf_func (inf
->stream
, _(" (File Offset: 0x%lx)"),
985 (long int)(sec
->filepos
+ (vma
- sec
->vma
)));
988 /* Print an address (VMA), symbolically if possible.
989 If SKIP_ZEROES is TRUE, don't output leading zeroes. */
992 objdump_print_addr (bfd_vma vma
,
993 struct disassemble_info
*inf
,
994 bfd_boolean skip_zeroes
)
996 struct objdump_disasm_info
*aux
;
998 bfd_boolean skip_find
= FALSE
;
1000 aux
= (struct objdump_disasm_info
*) inf
->application_data
;
1002 if (sorted_symcount
< 1)
1004 (*inf
->fprintf_func
) (inf
->stream
, "0x");
1005 objdump_print_value (vma
, inf
, skip_zeroes
);
1007 if (display_file_offsets
)
1008 inf
->fprintf_func (inf
->stream
, _(" (File Offset: 0x%lx)"),
1009 (long int)(aux
->sec
->filepos
+ (vma
- aux
->sec
->vma
)));
1013 if (aux
->reloc
!= NULL
1014 && aux
->reloc
->sym_ptr_ptr
!= NULL
1015 && * aux
->reloc
->sym_ptr_ptr
!= NULL
)
1017 sym
= * aux
->reloc
->sym_ptr_ptr
;
1019 /* Adjust the vma to the reloc. */
1020 vma
+= bfd_asymbol_value (sym
);
1022 if (bfd_is_und_section (bfd_get_section (sym
)))
1027 sym
= find_symbol_for_address (vma
, inf
, NULL
);
1029 objdump_print_addr_with_sym (aux
->abfd
, aux
->sec
, sym
, vma
, inf
,
1033 /* Print VMA to INFO. This function is passed to the disassembler
1037 objdump_print_address (bfd_vma vma
, struct disassemble_info
*inf
)
1039 objdump_print_addr (vma
, inf
, ! prefix_addresses
);
1042 /* Determine if the given address has a symbol associated with it. */
1045 objdump_symbol_at_address (bfd_vma vma
, struct disassemble_info
* inf
)
1049 sym
= find_symbol_for_address (vma
, inf
, NULL
);
1051 return (sym
!= NULL
&& (bfd_asymbol_value (sym
) == vma
));
1054 /* Hold the last function name and the last line number we displayed
1055 in a disassembly. */
1057 static char *prev_functionname
;
1058 static unsigned int prev_line
;
1060 /* We keep a list of all files that we have seen when doing a
1061 disassembly with source, so that we know how much of the file to
1062 display. This can be important for inlined functions. */
1064 struct print_file_list
1066 struct print_file_list
*next
;
1067 const char *filename
;
1068 const char *modname
;
1071 const char **linemap
;
1077 static struct print_file_list
*print_files
;
1079 /* The number of preceding context lines to show when we start
1080 displaying a file for the first time. */
1082 #define SHOW_PRECEDING_CONTEXT_LINES (5)
1084 /* Read a complete file into memory. */
1087 slurp_file (const char *fn
, size_t *size
)
1090 int ps
= getpagesize ();
1095 int fd
= open (fn
, O_RDONLY
| O_BINARY
);
1099 if (fstat (fd
, &st
) < 0)
1103 msize
= (*size
+ ps
- 1) & ~(ps
- 1);
1104 map
= mmap (NULL
, msize
, PROT_READ
, MAP_SHARED
, fd
, 0);
1105 if (map
!= (char *)-1L)
1111 map
= (const char *) malloc (*size
);
1112 if (!map
|| (size_t) read (fd
, (char *)map
, *size
) != *size
)
1121 #define line_map_decrease 5
1123 /* Precompute array of lines for a mapped file. */
1125 static const char **
1126 index_file (const char *map
, size_t size
, unsigned int *maxline
)
1128 const char *p
, *lstart
, *end
;
1129 int chars_per_line
= 45; /* First iteration will use 40. */
1130 unsigned int lineno
;
1131 const char **linemap
= NULL
;
1132 unsigned long line_map_size
= 0;
1138 for (p
= map
; p
< end
; p
++)
1142 if (p
+ 1 < end
&& p
[1] == '\r')
1145 else if (*p
== '\r')
1147 if (p
+ 1 < end
&& p
[1] == '\n')
1153 /* End of line found. */
1155 if (linemap
== NULL
|| line_map_size
< lineno
+ 1)
1157 unsigned long newsize
;
1159 chars_per_line
-= line_map_decrease
;
1160 if (chars_per_line
<= 1)
1162 line_map_size
= size
/ chars_per_line
+ 1;
1163 if (line_map_size
< lineno
+ 1)
1164 line_map_size
= lineno
+ 1;
1165 newsize
= line_map_size
* sizeof (char *);
1166 linemap
= (const char **) xrealloc (linemap
, newsize
);
1169 linemap
[lineno
++] = lstart
;
1177 /* Tries to open MODNAME, and if successful adds a node to print_files
1178 linked list and returns that node. Returns NULL on failure. */
1180 static struct print_file_list
*
1181 try_print_file_open (const char *origname
, const char *modname
)
1183 struct print_file_list
*p
;
1185 p
= (struct print_file_list
*) xmalloc (sizeof (struct print_file_list
));
1187 p
->map
= slurp_file (modname
, &p
->mapsize
);
1194 p
->linemap
= index_file (p
->map
, p
->mapsize
, &p
->maxline
);
1196 p
->filename
= origname
;
1197 p
->modname
= modname
;
1198 p
->next
= print_files
;
1204 /* If the the source file, as described in the symtab, is not found
1205 try to locate it in one of the paths specified with -I
1206 If found, add location to print_files linked list. */
1208 static struct print_file_list
*
1209 update_source_path (const char *filename
)
1211 struct print_file_list
*p
;
1215 p
= try_print_file_open (filename
, filename
);
1219 if (include_path_count
== 0)
1222 /* Get the name of the file. */
1223 fname
= lbasename (filename
);
1225 /* If file exists under a new path, we need to add it to the list
1226 so that show_line knows about it. */
1227 for (i
= 0; i
< include_path_count
; i
++)
1229 char *modname
= concat (include_paths
[i
], "/", fname
, (const char *) 0);
1231 p
= try_print_file_open (filename
, modname
);
1241 /* Print a source file line. */
1244 print_line (struct print_file_list
*p
, unsigned int linenum
)
1250 if (linenum
>= p
->maxline
)
1252 l
= p
->linemap
[linenum
];
1253 /* Test fwrite return value to quiet glibc warning. */
1254 len
= strcspn (l
, "\n\r");
1255 if (len
== 0 || fwrite (l
, len
, 1, stdout
) == 1)
1259 /* Print a range of source code lines. */
1262 dump_lines (struct print_file_list
*p
, unsigned int start
, unsigned int end
)
1266 while (start
<= end
)
1268 print_line (p
, start
);
1273 /* Show the line number, or the source line, in a disassembly
1277 show_line (bfd
*abfd
, asection
*section
, bfd_vma addr_offset
)
1279 const char *filename
;
1280 const char *functionname
;
1281 unsigned int linenumber
;
1284 if (! with_line_numbers
&& ! with_source_code
)
1287 if (! bfd_find_nearest_line (abfd
, section
, syms
, addr_offset
, &filename
,
1288 &functionname
, &linenumber
))
1291 if (filename
!= NULL
&& *filename
== '\0')
1293 if (functionname
!= NULL
&& *functionname
== '\0')
1294 functionname
= NULL
;
1297 && IS_ABSOLUTE_PATH (filename
)
1301 const char *fname
= filename
;
1302 char *path
= (char *) alloca (prefix_length
+ PATH_MAX
+ 1);
1305 memcpy (path
, prefix
, prefix_length
);
1306 path_up
= path
+ prefix_length
;
1308 /* Build relocated filename, stripping off leading directories
1309 from the initial filename if requested. */
1310 if (prefix_strip
> 0)
1315 /* Skip selected directory levels. */
1316 for (s
= fname
+ 1; *s
!= '\0' && level
< prefix_strip
; s
++)
1317 if (IS_DIR_SEPARATOR(*s
))
1324 /* Update complete filename. */
1325 strncpy (path_up
, fname
, PATH_MAX
);
1326 path_up
[PATH_MAX
] = '\0';
1334 if (with_line_numbers
)
1336 if (functionname
!= NULL
1337 && (prev_functionname
== NULL
1338 || strcmp (functionname
, prev_functionname
) != 0))
1339 printf ("%s():\n", functionname
);
1340 if (linenumber
> 0 && linenumber
!= prev_line
)
1341 printf ("%s:%u\n", filename
== NULL
? "???" : filename
, linenumber
);
1344 if (with_source_code
1348 struct print_file_list
**pp
, *p
;
1351 for (pp
= &print_files
; *pp
!= NULL
; pp
= &(*pp
)->next
)
1352 if (strcmp ((*pp
)->filename
, filename
) == 0)
1359 filename
= xstrdup (filename
);
1360 p
= update_source_path (filename
);
1363 if (p
!= NULL
&& linenumber
!= p
->last_line
)
1365 if (file_start_context
&& p
->first
)
1369 l
= linenumber
- SHOW_PRECEDING_CONTEXT_LINES
;
1370 if (l
>= linenumber
)
1372 if (p
->last_line
>= l
&& p
->last_line
<= linenumber
)
1373 l
= p
->last_line
+ 1;
1375 dump_lines (p
, l
, linenumber
);
1376 p
->last_line
= linenumber
;
1381 if (functionname
!= NULL
1382 && (prev_functionname
== NULL
1383 || strcmp (functionname
, prev_functionname
) != 0))
1385 if (prev_functionname
!= NULL
)
1386 free (prev_functionname
);
1387 prev_functionname
= (char *) xmalloc (strlen (functionname
) + 1);
1388 strcpy (prev_functionname
, functionname
);
1391 if (linenumber
> 0 && linenumber
!= prev_line
)
1392 prev_line
= linenumber
;
1395 /* Pseudo FILE object for strings. */
1403 /* sprintf to a "stream". */
1405 static int ATTRIBUTE_PRINTF_2
1406 objdump_sprintf (SFILE
*f
, const char *format
, ...)
1413 size_t space
= f
->alloc
- f
->pos
;
1415 va_start (args
, format
);
1416 n
= vsnprintf (f
->buffer
+ f
->pos
, space
, format
, args
);
1422 f
->alloc
= (f
->alloc
+ n
) * 2;
1423 f
->buffer
= (char *) xrealloc (f
->buffer
, f
->alloc
);
1430 /* The number of zeroes we want to see before we start skipping them.
1431 The number is arbitrarily chosen. */
1433 #define DEFAULT_SKIP_ZEROES 8
1435 /* The number of zeroes to skip at the end of a section. If the
1436 number of zeroes at the end is between SKIP_ZEROES_AT_END and
1437 SKIP_ZEROES, they will be disassembled. If there are fewer than
1438 SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic
1439 attempt to avoid disassembling zeroes inserted by section
1442 #define DEFAULT_SKIP_ZEROES_AT_END 3
1444 /* Disassemble some data in memory between given values. */
1447 disassemble_bytes (struct disassemble_info
* inf
,
1448 disassembler_ftype disassemble_fn
,
1451 bfd_vma start_offset
,
1452 bfd_vma stop_offset
,
1455 arelent
** relppend
)
1457 struct objdump_disasm_info
*aux
;
1459 int octets_per_line
;
1460 int skip_addr_chars
;
1461 bfd_vma addr_offset
;
1462 unsigned int opb
= inf
->octets_per_byte
;
1463 unsigned int skip_zeroes
= inf
->skip_zeroes
;
1464 unsigned int skip_zeroes_at_end
= inf
->skip_zeroes_at_end
;
1468 aux
= (struct objdump_disasm_info
*) inf
->application_data
;
1472 sfile
.buffer
= (char *) xmalloc (sfile
.alloc
);
1476 octets_per_line
= insn_width
;
1478 octets_per_line
= 4;
1480 octets_per_line
= 16;
1482 /* Figure out how many characters to skip at the start of an
1483 address, to make the disassembly look nicer. We discard leading
1484 zeroes in chunks of 4, ensuring that there is always a leading
1486 skip_addr_chars
= 0;
1487 if (! prefix_addresses
)
1491 bfd_sprintf_vma (aux
->abfd
, buf
, section
->vma
+ section
->size
/ opb
);
1493 while (buf
[skip_addr_chars
] == '0')
1496 /* Don't discard zeros on overflow. */
1497 if (buf
[skip_addr_chars
] == '\0' && section
->vma
!= 0)
1498 skip_addr_chars
= 0;
1500 if (skip_addr_chars
!= 0)
1501 skip_addr_chars
= (skip_addr_chars
- 1) & -4;
1504 inf
->insn_info_valid
= 0;
1506 addr_offset
= start_offset
;
1507 while (addr_offset
< stop_offset
)
1510 bfd_boolean need_nl
= FALSE
;
1511 int previous_octets
;
1513 /* Remember the length of the previous instruction. */
1514 previous_octets
= octets
;
1517 /* Make sure we don't use relocs from previous instructions. */
1520 /* If we see more than SKIP_ZEROES octets of zeroes, we just
1522 for (z
= addr_offset
* opb
; z
< stop_offset
* opb
; z
++)
1525 if (! disassemble_zeroes
1526 && (inf
->insn_info_valid
== 0
1527 || inf
->branch_delay_insns
== 0)
1528 && (z
- addr_offset
* opb
>= skip_zeroes
1529 || (z
== stop_offset
* opb
&&
1530 z
- addr_offset
* opb
< skip_zeroes_at_end
)))
1532 /* If there are more nonzero octets to follow, we only skip
1533 zeroes in multiples of 4, to try to avoid running over
1534 the start of an instruction which happens to start with
1536 if (z
!= stop_offset
* opb
)
1537 z
= addr_offset
* opb
+ ((z
- addr_offset
* opb
) &~ 3);
1539 octets
= z
- addr_offset
* opb
;
1541 /* If we are going to display more data, and we are displaying
1542 file offsets, then tell the user how many zeroes we skip
1543 and the file offset from where we resume dumping. */
1544 if (display_file_offsets
&& ((addr_offset
+ (octets
/ opb
)) < stop_offset
))
1545 printf ("\t... (skipping %d zeroes, resuming at file offset: 0x%lx)\n",
1547 (unsigned long) (section
->filepos
1548 + (addr_offset
+ (octets
/ opb
))));
1558 if (with_line_numbers
|| with_source_code
)
1559 show_line (aux
->abfd
, section
, addr_offset
);
1561 if (! prefix_addresses
)
1565 bfd_sprintf_vma (aux
->abfd
, buf
, section
->vma
+ addr_offset
);
1566 for (s
= buf
+ skip_addr_chars
; *s
== '0'; s
++)
1570 printf ("%s:\t", buf
+ skip_addr_chars
);
1574 aux
->require_sec
= TRUE
;
1575 objdump_print_address (section
->vma
+ addr_offset
, inf
);
1576 aux
->require_sec
= FALSE
;
1583 inf
->fprintf_func
= (fprintf_ftype
) objdump_sprintf
;
1584 inf
->stream
= &sfile
;
1585 inf
->bytes_per_line
= 0;
1586 inf
->bytes_per_chunk
= 0;
1587 inf
->flags
= disassemble_all
? DISASSEMBLE_DATA
: 0;
1589 inf
->flags
|= USER_SPECIFIED_MACHINE_TYPE
;
1591 if (inf
->disassembler_needs_relocs
1592 && (bfd_get_file_flags (aux
->abfd
) & EXEC_P
) == 0
1593 && (bfd_get_file_flags (aux
->abfd
) & DYNAMIC
) == 0
1594 && *relppp
< relppend
)
1596 bfd_signed_vma distance_to_rel
;
1598 distance_to_rel
= (**relppp
)->address
1599 - (rel_offset
+ addr_offset
);
1601 /* Check to see if the current reloc is associated with
1602 the instruction that we are about to disassemble. */
1603 if (distance_to_rel
== 0
1604 /* FIXME: This is wrong. We are trying to catch
1605 relocs that are addressed part way through the
1606 current instruction, as might happen with a packed
1607 VLIW instruction. Unfortunately we do not know the
1608 length of the current instruction since we have not
1609 disassembled it yet. Instead we take a guess based
1610 upon the length of the previous instruction. The
1611 proper solution is to have a new target-specific
1612 disassembler function which just returns the length
1613 of an instruction at a given address without trying
1614 to display its disassembly. */
1615 || (distance_to_rel
> 0
1616 && distance_to_rel
< (bfd_signed_vma
) (previous_octets
/ opb
)))
1618 inf
->flags
|= INSN_HAS_RELOC
;
1619 aux
->reloc
= **relppp
;
1623 octets
= (*disassemble_fn
) (section
->vma
+ addr_offset
, inf
);
1624 inf
->fprintf_func
= (fprintf_ftype
) fprintf
;
1625 inf
->stream
= stdout
;
1626 if (insn_width
== 0 && inf
->bytes_per_line
!= 0)
1627 octets_per_line
= inf
->bytes_per_line
;
1628 if (octets
< (int) opb
)
1631 printf ("%s\n", sfile
.buffer
);
1634 non_fatal (_("disassemble_fn returned length %d"),
1645 octets
= octets_per_line
;
1646 if (addr_offset
+ octets
/ opb
> stop_offset
)
1647 octets
= (stop_offset
- addr_offset
) * opb
;
1649 for (j
= addr_offset
* opb
; j
< addr_offset
* opb
+ octets
; ++j
)
1651 if (ISPRINT (data
[j
]))
1652 buf
[j
- addr_offset
* opb
] = data
[j
];
1654 buf
[j
- addr_offset
* opb
] = '.';
1656 buf
[j
- addr_offset
* opb
] = '\0';
1659 if (prefix_addresses
1661 : show_raw_insn
>= 0)
1665 /* If ! prefix_addresses and ! wide_output, we print
1666 octets_per_line octets per line. */
1668 if (pb
> octets_per_line
&& ! prefix_addresses
&& ! wide_output
)
1669 pb
= octets_per_line
;
1671 if (inf
->bytes_per_chunk
)
1672 bpc
= inf
->bytes_per_chunk
;
1676 for (j
= addr_offset
* opb
; j
< addr_offset
* opb
+ pb
; j
+= bpc
)
1680 if (bpc
> 1 && inf
->display_endian
== BFD_ENDIAN_LITTLE
)
1682 for (k
= bpc
- 1; k
>= 0; k
--)
1683 printf ("%02x", (unsigned) data
[j
+ k
]);
1688 for (k
= 0; k
< bpc
; k
++)
1689 printf ("%02x", (unsigned) data
[j
+ k
]);
1694 for (; pb
< octets_per_line
; pb
+= bpc
)
1698 for (k
= 0; k
< bpc
; k
++)
1703 /* Separate raw data from instruction by extra space. */
1713 printf ("%s", sfile
.buffer
);
1715 if (prefix_addresses
1717 : show_raw_insn
>= 0)
1725 j
= addr_offset
* opb
+ pb
;
1727 bfd_sprintf_vma (aux
->abfd
, buf
, section
->vma
+ j
/ opb
);
1728 for (s
= buf
+ skip_addr_chars
; *s
== '0'; s
++)
1732 printf ("%s:\t", buf
+ skip_addr_chars
);
1734 pb
+= octets_per_line
;
1737 for (; j
< addr_offset
* opb
+ pb
; j
+= bpc
)
1741 if (bpc
> 1 && inf
->display_endian
== BFD_ENDIAN_LITTLE
)
1743 for (k
= bpc
- 1; k
>= 0; k
--)
1744 printf ("%02x", (unsigned) data
[j
+ k
]);
1749 for (k
= 0; k
< bpc
; k
++)
1750 printf ("%02x", (unsigned) data
[j
+ k
]);
1763 while ((*relppp
) < relppend
1764 && (**relppp
)->address
< rel_offset
+ addr_offset
+ octets
/ opb
)
1766 if (dump_reloc_info
|| dump_dynamic_reloc_info
)
1777 objdump_print_value (section
->vma
- rel_offset
+ q
->address
,
1780 if (q
->howto
== NULL
)
1781 printf (": *unknown*\t");
1782 else if (q
->howto
->name
)
1783 printf (": %s\t", q
->howto
->name
);
1785 printf (": %d\t", q
->howto
->type
);
1787 if (q
->sym_ptr_ptr
== NULL
|| *q
->sym_ptr_ptr
== NULL
)
1788 printf ("*unknown*");
1791 const char *sym_name
;
1793 sym_name
= bfd_asymbol_name (*q
->sym_ptr_ptr
);
1794 if (sym_name
!= NULL
&& *sym_name
!= '\0')
1795 objdump_print_symname (aux
->abfd
, inf
, *q
->sym_ptr_ptr
);
1800 sym_sec
= bfd_get_section (*q
->sym_ptr_ptr
);
1801 sym_name
= bfd_get_section_name (aux
->abfd
, sym_sec
);
1802 if (sym_name
== NULL
|| *sym_name
== '\0')
1803 sym_name
= "*unknown*";
1804 printf ("%s", sym_name
);
1811 objdump_print_value (q
->addend
, inf
, TRUE
);
1823 addr_offset
+= octets
/ opb
;
1826 free (sfile
.buffer
);
1830 disassemble_section (bfd
*abfd
, asection
*section
, void *inf
)
1832 const struct elf_backend_data
* bed
;
1833 bfd_vma sign_adjust
= 0;
1834 struct disassemble_info
* pinfo
= (struct disassemble_info
*) inf
;
1835 struct objdump_disasm_info
* paux
;
1836 unsigned int opb
= pinfo
->octets_per_byte
;
1837 bfd_byte
* data
= NULL
;
1838 bfd_size_type datasize
= 0;
1839 arelent
** rel_pp
= NULL
;
1840 arelent
** rel_ppstart
= NULL
;
1841 arelent
** rel_ppend
;
1842 unsigned long stop_offset
;
1843 asymbol
* sym
= NULL
;
1847 unsigned long addr_offset
;
1849 /* Sections that do not contain machine
1850 code are not normally disassembled. */
1851 if (! disassemble_all
1852 && only_list
== NULL
1853 && ((section
->flags
& (SEC_CODE
| SEC_HAS_CONTENTS
))
1854 != (SEC_CODE
| SEC_HAS_CONTENTS
)))
1857 if (! process_section_p (section
))
1860 datasize
= bfd_get_section_size (section
);
1864 /* Decide which set of relocs to use. Load them if necessary. */
1865 paux
= (struct objdump_disasm_info
*) pinfo
->application_data
;
1866 if (paux
->dynrelbuf
)
1868 rel_pp
= paux
->dynrelbuf
;
1869 rel_count
= paux
->dynrelcount
;
1870 /* Dynamic reloc addresses are absolute, non-dynamic are section
1871 relative. REL_OFFSET specifies the reloc address corresponding
1872 to the start of this section. */
1873 rel_offset
= section
->vma
;
1881 if ((section
->flags
& SEC_RELOC
) != 0
1882 && (dump_reloc_info
|| pinfo
->disassembler_needs_relocs
))
1886 relsize
= bfd_get_reloc_upper_bound (abfd
, section
);
1888 bfd_fatal (bfd_get_filename (abfd
));
1892 rel_ppstart
= rel_pp
= (arelent
**) xmalloc (relsize
);
1893 rel_count
= bfd_canonicalize_reloc (abfd
, section
, rel_pp
, syms
);
1895 bfd_fatal (bfd_get_filename (abfd
));
1897 /* Sort the relocs by address. */
1898 qsort (rel_pp
, rel_count
, sizeof (arelent
*), compare_relocs
);
1902 rel_ppend
= rel_pp
+ rel_count
;
1904 data
= (bfd_byte
*) xmalloc (datasize
);
1906 bfd_get_section_contents (abfd
, section
, data
, 0, datasize
);
1908 paux
->sec
= section
;
1909 pinfo
->buffer
= data
;
1910 pinfo
->buffer_vma
= section
->vma
;
1911 pinfo
->buffer_length
= datasize
;
1912 pinfo
->section
= section
;
1914 if (start_address
== (bfd_vma
) -1
1915 || start_address
< pinfo
->buffer_vma
)
1918 addr_offset
= start_address
- pinfo
->buffer_vma
;
1920 if (stop_address
== (bfd_vma
) -1)
1921 stop_offset
= datasize
/ opb
;
1924 if (stop_address
< pinfo
->buffer_vma
)
1927 stop_offset
= stop_address
- pinfo
->buffer_vma
;
1928 if (stop_offset
> pinfo
->buffer_length
/ opb
)
1929 stop_offset
= pinfo
->buffer_length
/ opb
;
1932 /* Skip over the relocs belonging to addresses below the
1934 while (rel_pp
< rel_ppend
1935 && (*rel_pp
)->address
< rel_offset
+ addr_offset
)
1938 if (addr_offset
< stop_offset
)
1939 printf (_("\nDisassembly of section %s:\n"), section
->name
);
1941 /* Find the nearest symbol forwards from our current position. */
1942 paux
->require_sec
= TRUE
;
1943 sym
= (asymbol
*) find_symbol_for_address (section
->vma
+ addr_offset
,
1944 (struct disassemble_info
*) inf
,
1946 paux
->require_sec
= FALSE
;
1948 /* PR 9774: If the target used signed addresses then we must make
1949 sure that we sign extend the value that we calculate for 'addr'
1950 in the loop below. */
1951 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1952 && (bed
= get_elf_backend_data (abfd
)) != NULL
1953 && bed
->sign_extend_vma
)
1954 sign_adjust
= (bfd_vma
) 1 << (bed
->s
->arch_size
- 1);
1956 /* Disassemble a block of instructions up to the address associated with
1957 the symbol we have just found. Then print the symbol and find the
1958 next symbol on. Repeat until we have disassembled the entire section
1959 or we have reached the end of the address range we are interested in. */
1960 while (addr_offset
< stop_offset
)
1964 unsigned long nextstop_offset
;
1967 addr
= section
->vma
+ addr_offset
;
1968 addr
= ((addr
& ((sign_adjust
<< 1) - 1)) ^ sign_adjust
) - sign_adjust
;
1970 if (sym
!= NULL
&& bfd_asymbol_value (sym
) <= addr
)
1975 (x
< sorted_symcount
1976 && (bfd_asymbol_value (sorted_syms
[x
]) <= addr
));
1980 pinfo
->symbols
= sorted_syms
+ place
;
1981 pinfo
->num_symbols
= x
- place
;
1982 pinfo
->symtab_pos
= place
;
1986 pinfo
->symbols
= NULL
;
1987 pinfo
->num_symbols
= 0;
1988 pinfo
->symtab_pos
= -1;
1991 if (! prefix_addresses
)
1993 pinfo
->fprintf_func (pinfo
->stream
, "\n");
1994 objdump_print_addr_with_sym (abfd
, section
, sym
, addr
,
1996 pinfo
->fprintf_func (pinfo
->stream
, ":\n");
1999 if (sym
!= NULL
&& bfd_asymbol_value (sym
) > addr
)
2001 else if (sym
== NULL
)
2005 #define is_valid_next_sym(SYM) \
2006 ((SYM)->section == section \
2007 && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
2008 && pinfo->symbol_is_valid (SYM, pinfo))
2010 /* Search forward for the next appropriate symbol in
2011 SECTION. Note that all the symbols are sorted
2012 together into one big array, and that some sections
2013 may have overlapping addresses. */
2014 while (place
< sorted_symcount
2015 && ! is_valid_next_sym (sorted_syms
[place
]))
2018 if (place
>= sorted_symcount
)
2021 nextsym
= sorted_syms
[place
];
2024 if (sym
!= NULL
&& bfd_asymbol_value (sym
) > addr
)
2025 nextstop_offset
= bfd_asymbol_value (sym
) - section
->vma
;
2026 else if (nextsym
== NULL
)
2027 nextstop_offset
= stop_offset
;
2029 nextstop_offset
= bfd_asymbol_value (nextsym
) - section
->vma
;
2031 if (nextstop_offset
> stop_offset
2032 || nextstop_offset
<= addr_offset
)
2033 nextstop_offset
= stop_offset
;
2035 /* If a symbol is explicitly marked as being an object
2036 rather than a function, just dump the bytes without
2037 disassembling them. */
2040 || sym
->section
!= section
2041 || bfd_asymbol_value (sym
) > addr
2042 || ((sym
->flags
& BSF_OBJECT
) == 0
2043 && (strstr (bfd_asymbol_name (sym
), "gnu_compiled")
2045 && (strstr (bfd_asymbol_name (sym
), "gcc2_compiled")
2047 || (sym
->flags
& BSF_FUNCTION
) != 0)
2052 disassemble_bytes (pinfo
, paux
->disassemble_fn
, insns
, data
,
2053 addr_offset
, nextstop_offset
,
2054 rel_offset
, &rel_pp
, rel_ppend
);
2056 addr_offset
= nextstop_offset
;
2062 if (rel_ppstart
!= NULL
)
2066 /* Disassemble the contents of an object file. */
2069 disassemble_data (bfd
*abfd
)
2071 struct disassemble_info disasm_info
;
2072 struct objdump_disasm_info aux
;
2076 prev_functionname
= NULL
;
2079 /* We make a copy of syms to sort. We don't want to sort syms
2080 because that will screw up the relocs. */
2081 sorted_symcount
= symcount
? symcount
: dynsymcount
;
2082 sorted_syms
= (asymbol
**) xmalloc ((sorted_symcount
+ synthcount
)
2083 * sizeof (asymbol
*));
2084 memcpy (sorted_syms
, symcount
? syms
: dynsyms
,
2085 sorted_symcount
* sizeof (asymbol
*));
2087 sorted_symcount
= remove_useless_symbols (sorted_syms
, sorted_symcount
);
2089 for (i
= 0; i
< synthcount
; ++i
)
2091 sorted_syms
[sorted_symcount
] = synthsyms
+ i
;
2095 /* Sort the symbols into section and symbol order. */
2096 qsort (sorted_syms
, sorted_symcount
, sizeof (asymbol
*), compare_symbols
);
2098 init_disassemble_info (&disasm_info
, stdout
, (fprintf_ftype
) fprintf
);
2100 disasm_info
.application_data
= (void *) &aux
;
2102 aux
.require_sec
= FALSE
;
2103 aux
.dynrelbuf
= NULL
;
2104 aux
.dynrelcount
= 0;
2107 disasm_info
.print_address_func
= objdump_print_address
;
2108 disasm_info
.symbol_at_address_func
= objdump_symbol_at_address
;
2110 if (machine
!= NULL
)
2112 const bfd_arch_info_type
*inf
= bfd_scan_arch (machine
);
2115 fatal (_("can't use supplied machine %s"), machine
);
2117 abfd
->arch_info
= inf
;
2120 if (endian
!= BFD_ENDIAN_UNKNOWN
)
2122 struct bfd_target
*xvec
;
2124 xvec
= (struct bfd_target
*) xmalloc (sizeof (struct bfd_target
));
2125 memcpy (xvec
, abfd
->xvec
, sizeof (struct bfd_target
));
2126 xvec
->byteorder
= endian
;
2130 /* Use libopcodes to locate a suitable disassembler. */
2131 aux
.disassemble_fn
= disassembler (abfd
);
2132 if (!aux
.disassemble_fn
)
2134 non_fatal (_("can't disassemble for architecture %s\n"),
2135 bfd_printable_arch_mach (bfd_get_arch (abfd
), 0));
2140 disasm_info
.flavour
= bfd_get_flavour (abfd
);
2141 disasm_info
.arch
= bfd_get_arch (abfd
);
2142 disasm_info
.mach
= bfd_get_mach (abfd
);
2143 disasm_info
.disassembler_options
= disassembler_options
;
2144 disasm_info
.octets_per_byte
= bfd_octets_per_byte (abfd
);
2145 disasm_info
.skip_zeroes
= DEFAULT_SKIP_ZEROES
;
2146 disasm_info
.skip_zeroes_at_end
= DEFAULT_SKIP_ZEROES_AT_END
;
2147 disasm_info
.disassembler_needs_relocs
= FALSE
;
2149 if (bfd_big_endian (abfd
))
2150 disasm_info
.display_endian
= disasm_info
.endian
= BFD_ENDIAN_BIG
;
2151 else if (bfd_little_endian (abfd
))
2152 disasm_info
.display_endian
= disasm_info
.endian
= BFD_ENDIAN_LITTLE
;
2154 /* ??? Aborting here seems too drastic. We could default to big or little
2156 disasm_info
.endian
= BFD_ENDIAN_UNKNOWN
;
2158 /* Allow the target to customize the info structure. */
2159 disassemble_init_for_target (& disasm_info
);
2161 /* Pre-load the dynamic relocs if we are going
2162 to be dumping them along with the disassembly. */
2163 if (dump_dynamic_reloc_info
)
2165 long relsize
= bfd_get_dynamic_reloc_upper_bound (abfd
);
2168 bfd_fatal (bfd_get_filename (abfd
));
2172 aux
.dynrelbuf
= (arelent
**) xmalloc (relsize
);
2173 aux
.dynrelcount
= bfd_canonicalize_dynamic_reloc (abfd
,
2176 if (aux
.dynrelcount
< 0)
2177 bfd_fatal (bfd_get_filename (abfd
));
2179 /* Sort the relocs by address. */
2180 qsort (aux
.dynrelbuf
, aux
.dynrelcount
, sizeof (arelent
*),
2184 disasm_info
.symtab
= sorted_syms
;
2185 disasm_info
.symtab_size
= sorted_symcount
;
2187 bfd_map_over_sections (abfd
, disassemble_section
, & disasm_info
);
2189 if (aux
.dynrelbuf
!= NULL
)
2190 free (aux
.dynrelbuf
);
2195 load_specific_debug_section (enum dwarf_section_display_enum debug
,
2196 asection
*sec
, void *file
)
2198 struct dwarf_section
*section
= &debug_displays
[debug
].section
;
2199 bfd
*abfd
= (bfd
*) file
;
2201 int section_is_compressed
;
2203 /* If it is already loaded, do nothing. */
2204 if (section
->start
!= NULL
)
2207 section_is_compressed
= section
->name
== section
->compressed_name
;
2209 section
->address
= 0;
2210 section
->size
= bfd_get_section_size (sec
);
2211 section
->start
= (unsigned char *) xmalloc (section
->size
);
2213 ret
= bfd_get_section_contents (abfd
, sec
, section
->start
, 0,
2218 free_debug_section (debug
);
2219 printf (_("\nCan't get contents for section '%s'.\n"),
2224 if (section_is_compressed
)
2226 bfd_size_type size
= section
->size
;
2227 if (! bfd_uncompress_section_contents (§ion
->start
, &size
))
2229 free_debug_section (debug
);
2230 printf (_("\nCan't uncompress section '%s'.\n"), section
->name
);
2233 section
->size
= size
;
2236 if (is_relocatable
&& debug_displays
[debug
].relocate
)
2238 /* We want to relocate the data we've already read (and
2239 decompressed), so we store a pointer to the data in
2240 the bfd_section, and tell it that the contents are
2241 already in memory. */
2242 sec
->contents
= section
->start
;
2243 sec
->flags
|= SEC_IN_MEMORY
;
2244 sec
->size
= section
->size
;
2246 ret
= bfd_simple_get_relocated_section_contents (abfd
,
2253 free_debug_section (debug
);
2254 printf (_("\nCan't get contents for section '%s'.\n"),
2264 load_debug_section (enum dwarf_section_display_enum debug
, void *file
)
2266 struct dwarf_section
*section
= &debug_displays
[debug
].section
;
2267 bfd
*abfd
= (bfd
*) file
;
2270 /* If it is already loaded, do nothing. */
2271 if (section
->start
!= NULL
)
2274 /* Locate the debug section. */
2275 sec
= bfd_get_section_by_name (abfd
, section
->uncompressed_name
);
2277 section
->name
= section
->uncompressed_name
;
2280 sec
= bfd_get_section_by_name (abfd
, section
->compressed_name
);
2282 section
->name
= section
->compressed_name
;
2287 return load_specific_debug_section (debug
, sec
, file
);
2291 free_debug_section (enum dwarf_section_display_enum debug
)
2293 struct dwarf_section
*section
= &debug_displays
[debug
].section
;
2295 if (section
->start
== NULL
)
2298 free ((char *) section
->start
);
2299 section
->start
= NULL
;
2300 section
->address
= 0;
2305 dump_dwarf_section (bfd
*abfd
, asection
*section
,
2306 void *arg ATTRIBUTE_UNUSED
)
2308 const char *name
= bfd_get_section_name (abfd
, section
);
2312 if (CONST_STRNEQ (name
, ".gnu.linkonce.wi."))
2313 match
= ".debug_info";
2317 for (i
= 0; i
< max
; i
++)
2318 if ((strcmp (debug_displays
[i
].section
.uncompressed_name
, match
) == 0
2319 || strcmp (debug_displays
[i
].section
.compressed_name
, match
) == 0)
2320 && debug_displays
[i
].enabled
!= NULL
2321 && *debug_displays
[i
].enabled
)
2323 struct dwarf_section
*sec
= &debug_displays
[i
].section
;
2325 if (strcmp (sec
->uncompressed_name
, match
) == 0)
2326 sec
->name
= sec
->uncompressed_name
;
2328 sec
->name
= sec
->compressed_name
;
2329 if (load_specific_debug_section ((enum dwarf_section_display_enum
) i
,
2332 debug_displays
[i
].display (sec
, abfd
);
2334 if (i
!= info
&& i
!= abbrev
)
2335 free_debug_section ((enum dwarf_section_display_enum
) i
);
2341 /* Dump the dwarf debugging information. */
2344 dump_dwarf (bfd
*abfd
)
2346 is_relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
2348 eh_addr_size
= bfd_arch_bits_per_address (abfd
) / 8;
2350 if (bfd_big_endian (abfd
))
2351 byte_get
= byte_get_big_endian
;
2352 else if (bfd_little_endian (abfd
))
2353 byte_get
= byte_get_little_endian
;
2357 switch (bfd_get_arch (abfd
))
2360 switch (bfd_get_mach (abfd
))
2362 case bfd_mach_x86_64
:
2363 case bfd_mach_x86_64_intel_syntax
:
2364 init_dwarf_regnames_x86_64 ();
2368 init_dwarf_regnames_i386 ();
2377 bfd_map_over_sections (abfd
, dump_dwarf_section
, NULL
);
2379 free_debug_memory ();
2382 /* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
2383 it. Return NULL on failure. */
2386 read_section_stabs (bfd
*abfd
, const char *sect_name
, bfd_size_type
*size_ptr
)
2392 stabsect
= bfd_get_section_by_name (abfd
, sect_name
);
2393 if (stabsect
== NULL
)
2395 printf (_("No %s section present\n\n"), sect_name
);
2399 size
= bfd_section_size (abfd
, stabsect
);
2400 contents
= (char *) xmalloc (size
);
2402 if (! bfd_get_section_contents (abfd
, stabsect
, contents
, 0, size
))
2404 non_fatal (_("reading %s section of %s failed: %s"),
2405 sect_name
, bfd_get_filename (abfd
),
2406 bfd_errmsg (bfd_get_error ()));
2417 /* Stabs entries use a 12 byte format:
2418 4 byte string table index
2420 1 byte stab other field
2421 2 byte stab desc field
2423 FIXME: This will have to change for a 64 bit object format. */
2425 #define STRDXOFF (0)
2427 #define OTHEROFF (5)
2430 #define STABSIZE (12)
2432 /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
2433 using string table section STRSECT_NAME (in `strtab'). */
2436 print_section_stabs (bfd
*abfd
,
2437 const char *stabsect_name
,
2438 unsigned *string_offset_ptr
)
2441 unsigned file_string_table_offset
= 0;
2442 unsigned next_file_string_table_offset
= *string_offset_ptr
;
2443 bfd_byte
*stabp
, *stabs_end
;
2446 stabs_end
= stabp
+ stab_size
;
2448 printf (_("Contents of %s section:\n\n"), stabsect_name
);
2449 printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
2451 /* Loop through all symbols and print them.
2453 We start the index at -1 because there is a dummy symbol on
2454 the front of stabs-in-{coff,elf} sections that supplies sizes. */
2455 for (i
= -1; stabp
< stabs_end
; stabp
+= STABSIZE
, i
++)
2459 unsigned char type
, other
;
2460 unsigned short desc
;
2463 strx
= bfd_h_get_32 (abfd
, stabp
+ STRDXOFF
);
2464 type
= bfd_h_get_8 (abfd
, stabp
+ TYPEOFF
);
2465 other
= bfd_h_get_8 (abfd
, stabp
+ OTHEROFF
);
2466 desc
= bfd_h_get_16 (abfd
, stabp
+ DESCOFF
);
2467 value
= bfd_h_get_32 (abfd
, stabp
+ VALOFF
);
2469 printf ("\n%-6d ", i
);
2470 /* Either print the stab name, or, if unnamed, print its number
2471 again (makes consistent formatting for tools like awk). */
2472 name
= bfd_get_stab_name (type
);
2474 printf ("%-6s", name
);
2475 else if (type
== N_UNDF
)
2478 printf ("%-6d", type
);
2479 printf (" %-6d %-6d ", other
, desc
);
2480 bfd_printf_vma (abfd
, value
);
2481 printf (" %-6lu", strx
);
2483 /* Symbols with type == 0 (N_UNDF) specify the length of the
2484 string table associated with this file. We use that info
2485 to know how to relocate the *next* file's string table indices. */
2488 file_string_table_offset
= next_file_string_table_offset
;
2489 next_file_string_table_offset
+= value
;
2493 /* Using the (possibly updated) string table offset, print the
2494 string (if any) associated with this symbol. */
2495 if ((strx
+ file_string_table_offset
) < stabstr_size
)
2496 printf (" %s", &strtab
[strx
+ file_string_table_offset
]);
2502 *string_offset_ptr
= next_file_string_table_offset
;
2507 const char * section_name
;
2508 const char * string_section_name
;
2509 unsigned string_offset
;
2514 find_stabs_section (bfd
*abfd
, asection
*section
, void *names
)
2517 stab_section_names
* sought
= (stab_section_names
*) names
;
2519 /* Check for section names for which stabsect_name is a prefix, to
2520 handle .stab.N, etc. */
2521 len
= strlen (sought
->section_name
);
2523 /* If the prefix matches, and the files section name ends with a
2524 nul or a digit, then we match. I.e., we want either an exact
2525 match or a section followed by a number. */
2526 if (strncmp (sought
->section_name
, section
->name
, len
) == 0
2527 && (section
->name
[len
] == 0
2528 || (section
->name
[len
] == '.' && ISDIGIT (section
->name
[len
+ 1]))))
2531 strtab
= read_section_stabs (abfd
, sought
->string_section_name
,
2536 stabs
= (bfd_byte
*) read_section_stabs (abfd
, section
->name
,
2539 print_section_stabs (abfd
, section
->name
, &sought
->string_offset
);
2545 dump_stabs_section (bfd
*abfd
, char *stabsect_name
, char *strsect_name
)
2547 stab_section_names s
;
2549 s
.section_name
= stabsect_name
;
2550 s
.string_section_name
= strsect_name
;
2551 s
.string_offset
= 0;
2553 bfd_map_over_sections (abfd
, find_stabs_section
, & s
);
2559 /* Dump the any sections containing stabs debugging information. */
2562 dump_stabs (bfd
*abfd
)
2564 dump_stabs_section (abfd
, ".stab", ".stabstr");
2565 dump_stabs_section (abfd
, ".stab.excl", ".stab.exclstr");
2566 dump_stabs_section (abfd
, ".stab.index", ".stab.indexstr");
2569 dump_stabs_section (abfd
, "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr");
2571 dump_stabs_section (abfd
, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
2575 dump_bfd_header (bfd
*abfd
)
2579 printf (_("architecture: %s, "),
2580 bfd_printable_arch_mach (bfd_get_arch (abfd
),
2581 bfd_get_mach (abfd
)));
2582 printf (_("flags 0x%08x:\n"), abfd
->flags
);
2584 #define PF(x, y) if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
2585 PF (HAS_RELOC
, "HAS_RELOC");
2586 PF (EXEC_P
, "EXEC_P");
2587 PF (HAS_LINENO
, "HAS_LINENO");
2588 PF (HAS_DEBUG
, "HAS_DEBUG");
2589 PF (HAS_SYMS
, "HAS_SYMS");
2590 PF (HAS_LOCALS
, "HAS_LOCALS");
2591 PF (DYNAMIC
, "DYNAMIC");
2592 PF (WP_TEXT
, "WP_TEXT");
2593 PF (D_PAGED
, "D_PAGED");
2594 PF (BFD_IS_RELAXABLE
, "BFD_IS_RELAXABLE");
2595 PF (HAS_LOAD_PAGE
, "HAS_LOAD_PAGE");
2596 printf (_("\nstart address 0x"));
2597 bfd_printf_vma (abfd
, abfd
->start_address
);
2603 dump_bfd_private_header (bfd
*abfd
)
2605 bfd_print_private_bfd_data (abfd
, stdout
);
2609 /* Display a section in hexadecimal format with associated characters.
2610 Each line prefixed by the zero padded address. */
2613 dump_section (bfd
*abfd
, asection
*section
, void *dummy ATTRIBUTE_UNUSED
)
2616 bfd_size_type datasize
;
2617 bfd_size_type addr_offset
;
2618 bfd_size_type start_offset
;
2619 bfd_size_type stop_offset
;
2620 unsigned int opb
= bfd_octets_per_byte (abfd
);
2621 /* Bytes per line. */
2622 const int onaline
= 16;
2627 if ((section
->flags
& SEC_HAS_CONTENTS
) == 0)
2630 if (! process_section_p (section
))
2633 if ((datasize
= bfd_section_size (abfd
, section
)) == 0)
2636 /* Compute the address range to display. */
2637 if (start_address
== (bfd_vma
) -1
2638 || start_address
< section
->vma
)
2641 start_offset
= start_address
- section
->vma
;
2643 if (stop_address
== (bfd_vma
) -1)
2644 stop_offset
= datasize
/ opb
;
2647 if (stop_address
< section
->vma
)
2650 stop_offset
= stop_address
- section
->vma
;
2652 if (stop_offset
> datasize
/ opb
)
2653 stop_offset
= datasize
/ opb
;
2656 if (start_offset
>= stop_offset
)
2659 printf (_("Contents of section %s:"), section
->name
);
2660 if (display_file_offsets
)
2661 printf (_(" (Starting at file offset: 0x%lx)"),
2662 (unsigned long) (section
->filepos
+ start_offset
));
2665 data
= (bfd_byte
*) xmalloc (datasize
);
2667 bfd_get_section_contents (abfd
, section
, data
, 0, datasize
);
2671 bfd_sprintf_vma (abfd
, buf
, start_offset
+ section
->vma
);
2672 if (strlen (buf
) >= sizeof (buf
))
2676 while (buf
[count
] == '0' && buf
[count
+1] != '\0')
2678 count
= strlen (buf
) - count
;
2682 bfd_sprintf_vma (abfd
, buf
, stop_offset
+ section
->vma
- 1);
2683 if (strlen (buf
) >= sizeof (buf
))
2687 while (buf
[count
] == '0' && buf
[count
+1] != '\0')
2689 count
= strlen (buf
) - count
;
2693 for (addr_offset
= start_offset
;
2694 addr_offset
< stop_offset
; addr_offset
+= onaline
/ opb
)
2698 bfd_sprintf_vma (abfd
, buf
, (addr_offset
+ section
->vma
));
2699 count
= strlen (buf
);
2700 if ((size_t) count
>= sizeof (buf
))
2704 while (count
< width
)
2709 fputs (buf
+ count
- width
, stdout
);
2712 for (j
= addr_offset
* opb
;
2713 j
< addr_offset
* opb
+ onaline
; j
++)
2715 if (j
< stop_offset
* opb
)
2716 printf ("%02x", (unsigned) (data
[j
]));
2724 for (j
= addr_offset
* opb
;
2725 j
< addr_offset
* opb
+ onaline
; j
++)
2727 if (j
>= stop_offset
* opb
)
2730 printf ("%c", ISPRINT (data
[j
]) ? data
[j
] : '.');
2737 /* Actually display the various requested regions. */
2740 dump_data (bfd
*abfd
)
2742 bfd_map_over_sections (abfd
, dump_section
, NULL
);
2745 /* Should perhaps share code and display with nm? */
2748 dump_symbols (bfd
*abfd ATTRIBUTE_UNUSED
, bfd_boolean dynamic
)
2757 max_count
= dynsymcount
;
2758 printf ("DYNAMIC SYMBOL TABLE:\n");
2763 max_count
= symcount
;
2764 printf ("SYMBOL TABLE:\n");
2768 printf (_("no symbols\n"));
2770 for (count
= 0; count
< max_count
; count
++)
2774 if (*current
== NULL
)
2775 printf (_("no information for symbol number %ld\n"), count
);
2777 else if ((cur_bfd
= bfd_asymbol_bfd (*current
)) == NULL
)
2778 printf (_("could not determine the type of symbol number %ld\n"),
2781 else if (process_section_p ((* current
)->section
)
2782 && (dump_special_syms
2783 || !bfd_is_target_special_symbol (cur_bfd
, *current
)))
2785 const char *name
= (*current
)->name
;
2787 if (do_demangle
&& name
!= NULL
&& *name
!= '\0')
2791 /* If we want to demangle the name, we demangle it
2792 here, and temporarily clobber it while calling
2793 bfd_print_symbol. FIXME: This is a gross hack. */
2794 alloc
= bfd_demangle (cur_bfd
, name
, DMGL_ANSI
| DMGL_PARAMS
);
2796 (*current
)->name
= alloc
;
2797 bfd_print_symbol (cur_bfd
, stdout
, *current
,
2798 bfd_print_symbol_all
);
2801 (*current
)->name
= name
;
2806 bfd_print_symbol (cur_bfd
, stdout
, *current
,
2807 bfd_print_symbol_all
);
2817 dump_reloc_set (bfd
*abfd
, asection
*sec
, arelent
**relpp
, long relcount
)
2820 char *last_filename
, *last_functionname
;
2821 unsigned int last_line
;
2823 /* Get column headers lined up reasonably. */
2831 bfd_sprintf_vma (abfd
, buf
, (bfd_vma
) -1);
2832 width
= strlen (buf
) - 7;
2834 printf ("OFFSET %*s TYPE %*s VALUE \n", width
, "", 12, "");
2837 last_filename
= NULL
;
2838 last_functionname
= NULL
;
2841 for (p
= relpp
; relcount
&& *p
!= NULL
; p
++, relcount
--)
2844 const char *filename
, *functionname
;
2845 unsigned int linenumber
;
2846 const char *sym_name
;
2847 const char *section_name
;
2849 if (start_address
!= (bfd_vma
) -1
2850 && q
->address
< start_address
)
2852 if (stop_address
!= (bfd_vma
) -1
2853 && q
->address
> stop_address
)
2856 if (with_line_numbers
2858 && bfd_find_nearest_line (abfd
, sec
, syms
, q
->address
,
2859 &filename
, &functionname
, &linenumber
))
2861 if (functionname
!= NULL
2862 && (last_functionname
== NULL
2863 || strcmp (functionname
, last_functionname
) != 0))
2865 printf ("%s():\n", functionname
);
2866 if (last_functionname
!= NULL
)
2867 free (last_functionname
);
2868 last_functionname
= xstrdup (functionname
);
2872 && (linenumber
!= last_line
2873 || (filename
!= NULL
2874 && last_filename
!= NULL
2875 && strcmp (filename
, last_filename
) != 0)))
2877 printf ("%s:%u\n", filename
== NULL
? "???" : filename
, linenumber
);
2878 last_line
= linenumber
;
2879 if (last_filename
!= NULL
)
2880 free (last_filename
);
2881 if (filename
== NULL
)
2882 last_filename
= NULL
;
2884 last_filename
= xstrdup (filename
);
2888 if (q
->sym_ptr_ptr
&& *q
->sym_ptr_ptr
)
2890 sym_name
= (*(q
->sym_ptr_ptr
))->name
;
2891 section_name
= (*(q
->sym_ptr_ptr
))->section
->name
;
2896 section_name
= NULL
;
2899 bfd_printf_vma (abfd
, q
->address
);
2900 if (q
->howto
== NULL
)
2901 printf (" *unknown* ");
2902 else if (q
->howto
->name
)
2903 printf (" %-16s ", q
->howto
->name
);
2905 printf (" %-16d ", q
->howto
->type
);
2909 objdump_print_symname (abfd
, NULL
, *q
->sym_ptr_ptr
);
2913 if (section_name
== NULL
)
2914 section_name
= "*unknown*";
2915 printf ("[%s]", section_name
);
2921 bfd_printf_vma (abfd
, q
->addend
);
2929 dump_relocs_in_section (bfd
*abfd
,
2931 void *dummy ATTRIBUTE_UNUSED
)
2937 if ( bfd_is_abs_section (section
)
2938 || bfd_is_und_section (section
)
2939 || bfd_is_com_section (section
)
2940 || (! process_section_p (section
))
2941 || ((section
->flags
& SEC_RELOC
) == 0))
2944 relsize
= bfd_get_reloc_upper_bound (abfd
, section
);
2946 bfd_fatal (bfd_get_filename (abfd
));
2948 printf ("RELOCATION RECORDS FOR [%s]:", section
->name
);
2952 printf (" (none)\n\n");
2956 relpp
= (arelent
**) xmalloc (relsize
);
2957 relcount
= bfd_canonicalize_reloc (abfd
, section
, relpp
, syms
);
2960 bfd_fatal (bfd_get_filename (abfd
));
2961 else if (relcount
== 0)
2962 printf (" (none)\n\n");
2966 dump_reloc_set (abfd
, section
, relpp
, relcount
);
2973 dump_relocs (bfd
*abfd
)
2975 bfd_map_over_sections (abfd
, dump_relocs_in_section
, NULL
);
2979 dump_dynamic_relocs (bfd
*abfd
)
2985 relsize
= bfd_get_dynamic_reloc_upper_bound (abfd
);
2987 bfd_fatal (bfd_get_filename (abfd
));
2989 printf ("DYNAMIC RELOCATION RECORDS");
2992 printf (" (none)\n\n");
2995 relpp
= (arelent
**) xmalloc (relsize
);
2996 relcount
= bfd_canonicalize_dynamic_reloc (abfd
, relpp
, dynsyms
);
2999 bfd_fatal (bfd_get_filename (abfd
));
3000 else if (relcount
== 0)
3001 printf (" (none)\n\n");
3005 dump_reloc_set (abfd
, NULL
, relpp
, relcount
);
3012 /* Creates a table of paths, to search for source files. */
3015 add_include_path (const char *path
)
3019 include_path_count
++;
3020 include_paths
= (const char **)
3021 xrealloc (include_paths
, include_path_count
* sizeof (*include_paths
));
3022 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3023 if (path
[1] == ':' && path
[2] == 0)
3024 path
= concat (path
, ".", (const char *) 0);
3026 include_paths
[include_path_count
- 1] = path
;
3030 adjust_addresses (bfd
*abfd ATTRIBUTE_UNUSED
,
3034 if ((section
->flags
& SEC_DEBUGGING
) == 0)
3036 bfd_boolean
*has_reloc_p
= (bfd_boolean
*) arg
;
3037 section
->vma
+= adjust_section_vma
;
3039 section
->lma
+= adjust_section_vma
;
3043 /* Dump selected contents of ABFD. */
3046 dump_bfd (bfd
*abfd
)
3048 /* If we are adjusting section VMA's, change them all now. Changing
3049 the BFD information is a hack. However, we must do it, or
3050 bfd_find_nearest_line will not do the right thing. */
3051 if (adjust_section_vma
!= 0)
3053 bfd_boolean has_reloc
= (abfd
->flags
& HAS_RELOC
);
3054 bfd_map_over_sections (abfd
, adjust_addresses
, &has_reloc
);
3057 if (! dump_debugging_tags
)
3058 printf (_("\n%s: file format %s\n"), bfd_get_filename (abfd
),
3061 print_arelt_descr (stdout
, abfd
, TRUE
);
3062 if (dump_file_header
)
3063 dump_bfd_header (abfd
);
3064 if (dump_private_headers
)
3065 dump_bfd_private_header (abfd
);
3066 if (! dump_debugging_tags
)
3068 if (dump_section_headers
)
3069 dump_headers (abfd
);
3075 || dump_dwarf_section_info
)
3076 syms
= slurp_symtab (abfd
);
3077 if (dump_dynamic_symtab
|| dump_dynamic_reloc_info
3078 || (disassemble
&& bfd_get_dynamic_symtab_upper_bound (abfd
) > 0))
3079 dynsyms
= slurp_dynamic_symtab (abfd
);
3082 synthcount
= bfd_get_synthetic_symtab (abfd
, symcount
, syms
,
3083 dynsymcount
, dynsyms
, &synthsyms
);
3089 dump_symbols (abfd
, FALSE
);
3090 if (dump_dynamic_symtab
)
3091 dump_symbols (abfd
, TRUE
);
3092 if (dump_dwarf_section_info
)
3094 if (dump_stab_section_info
)
3096 if (dump_reloc_info
&& ! disassemble
)
3098 if (dump_dynamic_reloc_info
&& ! disassemble
)
3099 dump_dynamic_relocs (abfd
);
3100 if (dump_section_contents
)
3103 disassemble_data (abfd
);
3109 dhandle
= read_debugging_info (abfd
, syms
, symcount
, TRUE
);
3110 if (dhandle
!= NULL
)
3112 if (!print_debugging_info (stdout
, dhandle
, abfd
, syms
,
3114 dump_debugging_tags
? TRUE
: FALSE
))
3116 non_fatal (_("%s: printing debugging information failed"),
3117 bfd_get_filename (abfd
));
3121 /* PR 6483: If there was no STABS or IEEE debug
3122 info in the file, try DWARF instead. */
3123 else if (! dump_dwarf_section_info
)
3153 display_bfd (bfd
*abfd
)
3157 if (bfd_check_format_matches (abfd
, bfd_object
, &matching
))
3163 if (bfd_get_error () == bfd_error_file_ambiguously_recognized
)
3165 nonfatal (bfd_get_filename (abfd
));
3166 list_matching_formats (matching
);
3171 if (bfd_get_error () != bfd_error_file_not_recognized
)
3173 nonfatal (bfd_get_filename (abfd
));
3177 if (bfd_check_format_matches (abfd
, bfd_core
, &matching
))
3183 nonfatal (bfd_get_filename (abfd
));
3185 if (bfd_get_error () == bfd_error_file_ambiguously_recognized
)
3187 list_matching_formats (matching
);
3193 display_file (char *filename
, char *target
)
3198 if (get_file_size (filename
) < 1)
3204 file
= bfd_openr (filename
, target
);
3207 nonfatal (filename
);
3211 /* If the file is an archive, process all of its elements. */
3212 if (bfd_check_format (file
, bfd_archive
))
3214 bfd
*last_arfile
= NULL
;
3216 printf (_("In archive %s:\n"), bfd_get_filename (file
));
3219 bfd_set_error (bfd_error_no_error
);
3221 arfile
= bfd_openr_next_archived_file (file
, arfile
);
3224 if (bfd_get_error () != bfd_error_no_more_archived_files
)
3225 nonfatal (bfd_get_filename (file
));
3229 display_bfd (arfile
);
3231 if (last_arfile
!= NULL
)
3232 bfd_close (last_arfile
);
3233 last_arfile
= arfile
;
3236 if (last_arfile
!= NULL
)
3237 bfd_close (last_arfile
);
3246 main (int argc
, char **argv
)
3249 char *target
= default_target
;
3250 bfd_boolean seenflag
= FALSE
;
3252 #if defined (HAVE_SETLOCALE)
3253 #if defined (HAVE_LC_MESSAGES)
3254 setlocale (LC_MESSAGES
, "");
3256 setlocale (LC_CTYPE
, "");
3259 bindtextdomain (PACKAGE
, LOCALEDIR
);
3260 textdomain (PACKAGE
);
3262 program_name
= *argv
;
3263 xmalloc_set_program_name (program_name
);
3265 START_PROGRESS (program_name
, 0);
3267 expandargv (&argc
, &argv
);
3270 set_default_bfd_target ();
3272 while ((c
= getopt_long (argc
, argv
,
3273 "pib:m:M:VvCdDlfFaHhrRtTxsSI:j:wE:zgeGW::",
3274 long_options
, (int *) 0))
3280 break; /* We've been given a long option. */
3285 if (disassembler_options
)
3286 /* Ignore potential memory leak for now. */
3287 disassembler_options
= concat (disassembler_options
, ",",
3288 optarg
, (const char *) NULL
);
3290 disassembler_options
= optarg
;
3296 display_file_offsets
= TRUE
;
3299 with_line_numbers
= TRUE
;
3308 enum demangling_styles style
;
3310 style
= cplus_demangle_name_to_style (optarg
);
3311 if (style
== unknown_demangling
)
3312 fatal (_("unknown demangling style `%s'"),
3315 cplus_demangle_set_style (style
);
3321 case OPTION_ADJUST_VMA
:
3322 adjust_section_vma
= parse_vma (optarg
, "--adjust-vma");
3324 case OPTION_START_ADDRESS
:
3325 start_address
= parse_vma (optarg
, "--start-address");
3326 if ((stop_address
!= (bfd_vma
) -1) && stop_address
<= start_address
)
3327 fatal (_("error: the start address should be before the end address"));
3329 case OPTION_STOP_ADDRESS
:
3330 stop_address
= parse_vma (optarg
, "--stop-address");
3331 if ((start_address
!= (bfd_vma
) -1) && stop_address
<= start_address
)
3332 fatal (_("error: the stop address should be after the start address"));
3336 prefix_length
= strlen (prefix
);
3337 /* Remove an unnecessary trailing '/' */
3338 while (IS_DIR_SEPARATOR (prefix
[prefix_length
- 1]))
3341 case OPTION_PREFIX_STRIP
:
3342 prefix_strip
= atoi (optarg
);
3343 if (prefix_strip
< 0)
3344 fatal (_("error: prefix strip must be non-negative"));
3346 case OPTION_INSN_WIDTH
:
3347 insn_width
= strtoul (optarg
, NULL
, 0);
3348 if (insn_width
<= 0)
3349 fatal (_("error: instruction width must be positive"));
3352 if (strcmp (optarg
, "B") == 0)
3353 endian
= BFD_ENDIAN_BIG
;
3354 else if (strcmp (optarg
, "L") == 0)
3355 endian
= BFD_ENDIAN_LITTLE
;
3358 nonfatal (_("unrecognized -E option"));
3363 if (strncmp (optarg
, "big", strlen (optarg
)) == 0)
3364 endian
= BFD_ENDIAN_BIG
;
3365 else if (strncmp (optarg
, "little", strlen (optarg
)) == 0)
3366 endian
= BFD_ENDIAN_LITTLE
;
3369 non_fatal (_("unrecognized --endian type `%s'"), optarg
);
3376 dump_file_header
= TRUE
;
3380 formats_info
= TRUE
;
3384 add_include_path (optarg
);
3387 dump_private_headers
= TRUE
;
3391 dump_private_headers
= TRUE
;
3393 dump_reloc_info
= TRUE
;
3394 dump_file_header
= TRUE
;
3395 dump_ar_hdrs
= TRUE
;
3396 dump_section_headers
= TRUE
;
3404 dump_dynamic_symtab
= TRUE
;
3412 disassemble_zeroes
= TRUE
;
3416 disassemble_all
= TRUE
;
3421 with_source_code
= TRUE
;
3430 dump_debugging_tags
= 1;
3435 dump_dwarf_section_info
= TRUE
;
3438 dwarf_select_sections_by_letters (optarg
);
3440 dwarf_select_sections_all ();
3443 dump_dwarf_section_info
= TRUE
;
3446 dwarf_select_sections_by_names (optarg
);
3448 dwarf_select_sections_all ();
3451 dump_stab_section_info
= TRUE
;
3455 dump_section_contents
= TRUE
;
3459 dump_reloc_info
= TRUE
;
3463 dump_dynamic_reloc_info
= TRUE
;
3467 dump_ar_hdrs
= TRUE
;
3471 dump_section_headers
= TRUE
;
3479 show_version
= TRUE
;
3489 print_version ("objdump");
3495 exit_status
= display_info ();
3499 display_file ("a.out", target
);
3501 for (; optind
< argc
;)
3502 display_file (argv
[optind
++], target
);
3507 END_PROGRESS (program_name
);