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
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 /* Pointer to an array of section names provided by
121 one or more "-j secname" command line options. */
123 /* The total number of slots in the only[] array. */
124 static size_t only_size
= 0;
125 /* The number of occupied slots in the only[] array. */
126 static size_t only_used
= 0;
128 /* Variables for handling include file path table. */
129 static const char **include_paths
;
130 static int include_path_count
;
132 /* Extra info to pass to the section disassembler and address printing
134 struct objdump_disasm_info
138 bfd_boolean require_sec
;
139 arelent
** dynrelbuf
;
141 disassembler_ftype disassemble_fn
;
145 /* Architecture to disassemble for, or default if NULL. */
146 static char *machine
= NULL
;
148 /* Target specific options to the disassembler. */
149 static char *disassembler_options
= NULL
;
151 /* Endianness to disassemble for, or default if BFD_ENDIAN_UNKNOWN. */
152 static enum bfd_endian endian
= BFD_ENDIAN_UNKNOWN
;
154 /* The symbol table. */
155 static asymbol
**syms
;
157 /* Number of symbols in `syms'. */
158 static long symcount
= 0;
160 /* The sorted symbol table. */
161 static asymbol
**sorted_syms
;
163 /* Number of symbols in `sorted_syms'. */
164 static long sorted_symcount
= 0;
166 /* The dynamic symbol table. */
167 static asymbol
**dynsyms
;
169 /* The synthetic symbol table. */
170 static asymbol
*synthsyms
;
171 static long synthcount
= 0;
173 /* Number of symbols in `dynsyms'. */
174 static long dynsymcount
= 0;
176 static bfd_byte
*stabs
;
177 static bfd_size_type stab_size
;
180 static bfd_size_type stabstr_size
;
182 static bfd_boolean is_relocatable
= FALSE
;
185 usage (FILE *stream
, int status
)
187 fprintf (stream
, _("Usage: %s <option(s)> <file(s)>\n"), program_name
);
188 fprintf (stream
, _(" Display information from object <file(s)>.\n"));
189 fprintf (stream
, _(" At least one of the following switches must be given:\n"));
190 fprintf (stream
, _("\
191 -a, --archive-headers Display archive header information\n\
192 -f, --file-headers Display the contents of the overall file header\n\
193 -p, --private-headers Display object format specific file header contents\n\
194 -h, --[section-]headers Display the contents of the section headers\n\
195 -x, --all-headers Display the contents of all headers\n\
196 -d, --disassemble Display assembler contents of executable sections\n\
197 -D, --disassemble-all Display assembler contents of all sections\n\
198 -S, --source Intermix source code with disassembly\n\
199 -s, --full-contents Display the full contents of all sections requested\n\
200 -g, --debugging Display debug information in object file\n\
201 -e, --debugging-tags Display debug information using ctags style\n\
202 -G, --stabs Display (in raw form) any STABS info in the file\n\
203 -W[lLiaprmfFsoR] or\n\
204 --dwarf[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=str,=loc,=Ranges]\n\
205 Display DWARF info in the file\n\
206 -t, --syms Display the contents of the symbol table(s)\n\
207 -T, --dynamic-syms Display the contents of the dynamic symbol table\n\
208 -r, --reloc Display the relocation entries in the file\n\
209 -R, --dynamic-reloc Display the dynamic relocation entries in the file\n\
210 @<file> Read options from <file>\n\
211 -v, --version Display this program's version number\n\
212 -i, --info List object formats and architectures supported\n\
213 -H, --help Display this information\n\
217 fprintf (stream
, _("\n The following switches are optional:\n"));
218 fprintf (stream
, _("\
219 -b, --target=BFDNAME Specify the target object format as BFDNAME\n\
220 -m, --architecture=MACHINE Specify the target architecture as MACHINE\n\
221 -j, --section=NAME Only display information for section NAME\n\
222 -M, --disassembler-options=OPT Pass text OPT on to the disassembler\n\
223 -EB --endian=big Assume big endian format when disassembling\n\
224 -EL --endian=little Assume little endian format when disassembling\n\
225 --file-start-context Include context from start of file (with -S)\n\
226 -I, --include=DIR Add DIR to search list for source files\n\
227 -l, --line-numbers Include line numbers and filenames in output\n\
228 -F, --file-offsets Include file offsets when displaying information\n\
229 -C, --demangle[=STYLE] Decode mangled/processed symbol names\n\
230 The STYLE, if specified, can be `auto', `gnu',\n\
231 `lucid', `arm', `hp', `edg', `gnu-v3', `java'\n\
233 -w, --wide Format output for more than 80 columns\n\
234 -z, --disassemble-zeroes Do not skip blocks of zeroes when disassembling\n\
235 --start-address=ADDR Only process data whose address is >= ADDR\n\
236 --stop-address=ADDR Only process data whose address is <= ADDR\n\
237 --prefix-addresses Print complete address alongside disassembly\n\
238 --[no-]show-raw-insn Display hex alongside symbolic disassembly\n\
239 --insn-width=WIDTH Display WIDTH bytes on a signle line for -d\n\
240 --adjust-vma=OFFSET Add OFFSET to all displayed section addresses\n\
241 --special-syms Include special symbols in symbol dumps\n\
242 --prefix=PREFIX Add PREFIX to absolute paths for -S\n\
243 --prefix-strip=LEVEL Strip initial directory names for -S\n\
245 list_supported_targets (program_name
, stream
);
246 list_supported_architectures (program_name
, stream
);
248 disassembler_usage (stream
);
250 if (REPORT_BUGS_TO
[0] && status
== 0)
251 fprintf (stream
, _("Report bugs to %s.\n"), REPORT_BUGS_TO
);
255 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
259 OPTION_START_ADDRESS
,
268 static struct option long_options
[]=
270 {"adjust-vma", required_argument
, NULL
, OPTION_ADJUST_VMA
},
271 {"all-headers", no_argument
, NULL
, 'x'},
272 {"private-headers", no_argument
, NULL
, 'p'},
273 {"architecture", required_argument
, NULL
, 'm'},
274 {"archive-headers", no_argument
, NULL
, 'a'},
275 {"debugging", no_argument
, NULL
, 'g'},
276 {"debugging-tags", no_argument
, NULL
, 'e'},
277 {"demangle", optional_argument
, NULL
, 'C'},
278 {"disassemble", no_argument
, NULL
, 'd'},
279 {"disassemble-all", no_argument
, NULL
, 'D'},
280 {"disassembler-options", required_argument
, NULL
, 'M'},
281 {"disassemble-zeroes", no_argument
, NULL
, 'z'},
282 {"dynamic-reloc", no_argument
, NULL
, 'R'},
283 {"dynamic-syms", no_argument
, NULL
, 'T'},
284 {"endian", required_argument
, NULL
, OPTION_ENDIAN
},
285 {"file-headers", no_argument
, NULL
, 'f'},
286 {"file-offsets", no_argument
, NULL
, 'F'},
287 {"file-start-context", no_argument
, &file_start_context
, 1},
288 {"full-contents", no_argument
, NULL
, 's'},
289 {"headers", no_argument
, NULL
, 'h'},
290 {"help", no_argument
, NULL
, 'H'},
291 {"info", no_argument
, NULL
, 'i'},
292 {"line-numbers", no_argument
, NULL
, 'l'},
293 {"no-show-raw-insn", no_argument
, &show_raw_insn
, -1},
294 {"prefix-addresses", no_argument
, &prefix_addresses
, 1},
295 {"reloc", no_argument
, NULL
, 'r'},
296 {"section", required_argument
, NULL
, 'j'},
297 {"section-headers", no_argument
, NULL
, 'h'},
298 {"show-raw-insn", no_argument
, &show_raw_insn
, 1},
299 {"source", no_argument
, NULL
, 'S'},
300 {"special-syms", no_argument
, &dump_special_syms
, 1},
301 {"include", required_argument
, NULL
, 'I'},
302 {"dwarf", optional_argument
, NULL
, OPTION_DWARF
},
303 {"stabs", no_argument
, NULL
, 'G'},
304 {"start-address", required_argument
, NULL
, OPTION_START_ADDRESS
},
305 {"stop-address", required_argument
, NULL
, OPTION_STOP_ADDRESS
},
306 {"syms", no_argument
, NULL
, 't'},
307 {"target", required_argument
, NULL
, 'b'},
308 {"version", no_argument
, NULL
, 'V'},
309 {"wide", no_argument
, NULL
, 'w'},
310 {"prefix", required_argument
, NULL
, OPTION_PREFIX
},
311 {"prefix-strip", required_argument
, NULL
, OPTION_PREFIX_STRIP
},
312 {"insn-width", required_argument
, NULL
, OPTION_INSN_WIDTH
},
313 {0, no_argument
, 0, 0}
317 nonfatal (const char *msg
)
323 /* Returns TRUE if the specified section should be dumped. */
326 process_section_p (asection
* section
)
333 for (i
= 0; i
< only_used
; i
++)
334 if (strcmp (only
[i
], section
->name
) == 0)
341 dump_section_header (bfd
*abfd
, asection
*section
,
342 void *ignored ATTRIBUTE_UNUSED
)
345 unsigned int opb
= bfd_octets_per_byte (abfd
);
347 /* Ignore linker created section. See elfNN_ia64_object_p in
349 if (section
->flags
& SEC_LINKER_CREATED
)
352 /* PR 10413: Skip sections that we are ignoring. */
353 if (! process_section_p (section
))
356 printf ("%3d %-13s %08lx ", section
->index
,
357 bfd_get_section_name (abfd
, section
),
358 (unsigned long) bfd_section_size (abfd
, section
) / opb
);
359 bfd_printf_vma (abfd
, bfd_get_section_vma (abfd
, section
));
361 bfd_printf_vma (abfd
, section
->lma
);
362 printf (" %08lx 2**%u", (unsigned long) section
->filepos
,
363 bfd_get_section_alignment (abfd
, section
));
369 if (section->flags & x) { printf ("%s%s", comma, y); comma = ", "; }
371 PF (SEC_HAS_CONTENTS
, "CONTENTS");
372 PF (SEC_ALLOC
, "ALLOC");
373 PF (SEC_CONSTRUCTOR
, "CONSTRUCTOR");
374 PF (SEC_LOAD
, "LOAD");
375 PF (SEC_RELOC
, "RELOC");
376 PF (SEC_READONLY
, "READONLY");
377 PF (SEC_CODE
, "CODE");
378 PF (SEC_DATA
, "DATA");
380 PF (SEC_DEBUGGING
, "DEBUGGING");
381 PF (SEC_NEVER_LOAD
, "NEVER_LOAD");
382 PF (SEC_EXCLUDE
, "EXCLUDE");
383 PF (SEC_SORT_ENTRIES
, "SORT_ENTRIES");
384 if (bfd_get_arch (abfd
) == bfd_arch_tic54x
)
386 PF (SEC_TIC54X_BLOCK
, "BLOCK");
387 PF (SEC_TIC54X_CLINK
, "CLINK");
389 PF (SEC_SMALL_DATA
, "SMALL_DATA");
390 if (bfd_get_flavour (abfd
) == bfd_target_coff_flavour
)
391 PF (SEC_COFF_SHARED
, "SHARED");
392 PF (SEC_THREAD_LOCAL
, "THREAD_LOCAL");
393 PF (SEC_GROUP
, "GROUP");
395 if ((section
->flags
& SEC_LINK_ONCE
) != 0)
398 struct coff_comdat_info
*comdat
;
400 switch (section
->flags
& SEC_LINK_DUPLICATES
)
404 case SEC_LINK_DUPLICATES_DISCARD
:
405 ls
= "LINK_ONCE_DISCARD";
407 case SEC_LINK_DUPLICATES_ONE_ONLY
:
408 ls
= "LINK_ONCE_ONE_ONLY";
410 case SEC_LINK_DUPLICATES_SAME_SIZE
:
411 ls
= "LINK_ONCE_SAME_SIZE";
413 case SEC_LINK_DUPLICATES_SAME_CONTENTS
:
414 ls
= "LINK_ONCE_SAME_CONTENTS";
417 printf ("%s%s", comma
, ls
);
419 comdat
= bfd_coff_get_comdat_section (abfd
, section
);
421 printf (" (COMDAT %s %ld)", comdat
->name
, comdat
->symbol
);
431 dump_headers (bfd
*abfd
)
433 printf (_("Sections:\n"));
436 printf (_("Idx Name Size VMA LMA File off Algn"));
438 /* With BFD64, non-ELF returns -1 and wants always 64 bit addresses. */
439 if (bfd_get_arch_size (abfd
) == 32)
440 printf (_("Idx Name Size VMA LMA File off Algn"));
442 printf (_("Idx Name Size VMA LMA File off Algn"));
446 printf (_(" Flags"));
447 if (abfd
->flags
& HAS_LOAD_PAGE
)
451 bfd_map_over_sections (abfd
, dump_section_header
, NULL
);
455 slurp_symtab (bfd
*abfd
)
460 if (!(bfd_get_file_flags (abfd
) & HAS_SYMS
))
466 storage
= bfd_get_symtab_upper_bound (abfd
);
468 bfd_fatal (bfd_get_filename (abfd
));
470 sy
= xmalloc (storage
);
472 symcount
= bfd_canonicalize_symtab (abfd
, sy
);
474 bfd_fatal (bfd_get_filename (abfd
));
478 /* Read in the dynamic symbols. */
481 slurp_dynamic_symtab (bfd
*abfd
)
486 storage
= bfd_get_dynamic_symtab_upper_bound (abfd
);
489 if (!(bfd_get_file_flags (abfd
) & DYNAMIC
))
491 non_fatal (_("%s: not a dynamic object"), bfd_get_filename (abfd
));
496 bfd_fatal (bfd_get_filename (abfd
));
499 sy
= xmalloc (storage
);
501 dynsymcount
= bfd_canonicalize_dynamic_symtab (abfd
, sy
);
503 bfd_fatal (bfd_get_filename (abfd
));
507 /* Filter out (in place) symbols that are useless for disassembly.
508 COUNT is the number of elements in SYMBOLS.
509 Return the number of useful symbols. */
512 remove_useless_symbols (asymbol
**symbols
, long count
)
514 asymbol
**in_ptr
= symbols
, **out_ptr
= symbols
;
518 asymbol
*sym
= *in_ptr
++;
520 if (sym
->name
== NULL
|| sym
->name
[0] == '\0')
522 if (sym
->flags
& (BSF_DEBUGGING
| BSF_SECTION_SYM
))
524 if (bfd_is_und_section (sym
->section
)
525 || bfd_is_com_section (sym
->section
))
530 return out_ptr
- symbols
;
533 /* Sort symbols into value order. */
536 compare_symbols (const void *ap
, const void *bp
)
538 const asymbol
*a
= * (const asymbol
**) ap
;
539 const asymbol
*b
= * (const asymbol
**) bp
;
549 if (bfd_asymbol_value (a
) > bfd_asymbol_value (b
))
551 else if (bfd_asymbol_value (a
) < bfd_asymbol_value (b
))
554 if (a
->section
> b
->section
)
556 else if (a
->section
< b
->section
)
559 an
= bfd_asymbol_name (a
);
560 bn
= bfd_asymbol_name (b
);
564 /* The symbols gnu_compiled and gcc2_compiled convey no real
565 information, so put them after other symbols with the same value. */
566 af
= (strstr (an
, "gnu_compiled") != NULL
567 || strstr (an
, "gcc2_compiled") != NULL
);
568 bf
= (strstr (bn
, "gnu_compiled") != NULL
569 || strstr (bn
, "gcc2_compiled") != NULL
);
576 /* We use a heuristic for the file name, to try to sort it after
577 more useful symbols. It may not work on non Unix systems, but it
578 doesn't really matter; the only difference is precisely which
579 symbol names get printed. */
581 #define file_symbol(s, sn, snl) \
582 (((s)->flags & BSF_FILE) != 0 \
583 || ((sn)[(snl) - 2] == '.' \
584 && ((sn)[(snl) - 1] == 'o' \
585 || (sn)[(snl) - 1] == 'a')))
587 af
= file_symbol (a
, an
, anl
);
588 bf
= file_symbol (b
, bn
, bnl
);
595 /* Try to sort global symbols before local symbols before function
596 symbols before debugging symbols. */
601 if ((aflags
& BSF_DEBUGGING
) != (bflags
& BSF_DEBUGGING
))
603 if ((aflags
& BSF_DEBUGGING
) != 0)
608 if ((aflags
& BSF_FUNCTION
) != (bflags
& BSF_FUNCTION
))
610 if ((aflags
& BSF_FUNCTION
) != 0)
615 if ((aflags
& BSF_LOCAL
) != (bflags
& BSF_LOCAL
))
617 if ((aflags
& BSF_LOCAL
) != 0)
622 if ((aflags
& BSF_GLOBAL
) != (bflags
& BSF_GLOBAL
))
624 if ((aflags
& BSF_GLOBAL
) != 0)
630 /* Symbols that start with '.' might be section names, so sort them
631 after symbols that don't start with '.'. */
632 if (an
[0] == '.' && bn
[0] != '.')
634 if (an
[0] != '.' && bn
[0] == '.')
637 /* Finally, if we can't distinguish them in any other way, try to
638 get consistent results by sorting the symbols by name. */
639 return strcmp (an
, bn
);
642 /* Sort relocs into address order. */
645 compare_relocs (const void *ap
, const void *bp
)
647 const arelent
*a
= * (const arelent
**) ap
;
648 const arelent
*b
= * (const arelent
**) bp
;
650 if (a
->address
> b
->address
)
652 else if (a
->address
< b
->address
)
655 /* So that associated relocations tied to the same address show up
656 in the correct order, we don't do any further sorting. */
665 /* Print an address (VMA) to the output stream in INFO.
666 If SKIP_ZEROES is TRUE, omit leading zeroes. */
669 objdump_print_value (bfd_vma vma
, struct disassemble_info
*info
,
670 bfd_boolean skip_zeroes
)
674 struct objdump_disasm_info
*aux
;
676 aux
= (struct objdump_disasm_info
*) info
->application_data
;
677 bfd_sprintf_vma (aux
->abfd
, buf
, vma
);
682 for (p
= buf
; *p
== '0'; ++p
)
687 (*info
->fprintf_func
) (info
->stream
, "%s", p
);
690 /* Print the name of a symbol. */
693 objdump_print_symname (bfd
*abfd
, struct disassemble_info
*info
,
700 name
= bfd_asymbol_name (sym
);
701 if (do_demangle
&& name
[0] != '\0')
703 /* Demangle the name. */
704 alloc
= bfd_demangle (abfd
, name
, DMGL_ANSI
| DMGL_PARAMS
);
710 (*info
->fprintf_func
) (info
->stream
, "%s", name
);
718 /* Locate a symbol given a bfd and a section (from INFO->application_data),
719 and a VMA. If INFO->application_data->require_sec is TRUE, then always
720 require the symbol to be in the section. Returns NULL if there is no
721 suitable symbol. If PLACE is not NULL, then *PLACE is set to the index
722 of the symbol in sorted_syms. */
725 find_symbol_for_address (bfd_vma vma
,
726 struct disassemble_info
*info
,
729 /* @@ Would it speed things up to cache the last two symbols returned,
730 and maybe their address ranges? For many processors, only one memory
731 operand can be present at a time, so the 2-entry cache wouldn't be
732 constantly churned by code doing heavy memory accesses. */
734 /* Indices in `sorted_syms'. */
736 long max
= sorted_symcount
;
738 struct objdump_disasm_info
*aux
;
742 bfd_boolean want_section
;
744 if (sorted_symcount
< 1)
747 aux
= (struct objdump_disasm_info
*) info
->application_data
;
750 opb
= info
->octets_per_byte
;
752 /* Perform a binary search looking for the closest symbol to the
753 required value. We are searching the range (min, max]. */
754 while (min
+ 1 < max
)
758 thisplace
= (max
+ min
) / 2;
759 sym
= sorted_syms
[thisplace
];
761 if (bfd_asymbol_value (sym
) > vma
)
763 else if (bfd_asymbol_value (sym
) < vma
)
772 /* The symbol we want is now in min, the low end of the range we
773 were searching. If there are several symbols with the same
774 value, we want the first one. */
777 && (bfd_asymbol_value (sorted_syms
[thisplace
])
778 == bfd_asymbol_value (sorted_syms
[thisplace
- 1])))
781 /* Prefer a symbol in the current section if we have multple symbols
782 with the same value, as can occur with overlays or zero size
786 && (bfd_asymbol_value (sorted_syms
[min
])
787 == bfd_asymbol_value (sorted_syms
[thisplace
])))
789 if (sorted_syms
[min
]->section
== sec
790 && info
->symbol_is_valid (sorted_syms
[min
], info
))
797 return sorted_syms
[thisplace
];
802 /* If the file is relocatable, and the symbol could be from this
803 section, prefer a symbol from this section over symbols from
804 others, even if the other symbol's value might be closer.
806 Note that this may be wrong for some symbol references if the
807 sections have overlapping memory ranges, but in that case there's
808 no way to tell what's desired without looking at the relocation
811 Also give the target a chance to reject symbols. */
812 want_section
= (aux
->require_sec
813 || ((abfd
->flags
& HAS_RELOC
) != 0
814 && vma
>= bfd_get_section_vma (abfd
, sec
)
815 && vma
< (bfd_get_section_vma (abfd
, sec
)
816 + bfd_section_size (abfd
, sec
) / opb
)));
817 if ((sorted_syms
[thisplace
]->section
!= sec
&& want_section
)
818 || !info
->symbol_is_valid (sorted_syms
[thisplace
], info
))
821 long newplace
= sorted_symcount
;
823 for (i
= min
- 1; i
>= 0; i
--)
825 if ((sorted_syms
[i
]->section
== sec
|| !want_section
)
826 && info
->symbol_is_valid (sorted_syms
[i
], info
))
828 if (newplace
== sorted_symcount
)
831 if (bfd_asymbol_value (sorted_syms
[i
])
832 != bfd_asymbol_value (sorted_syms
[newplace
]))
835 /* Remember this symbol and keep searching until we reach
836 an earlier address. */
841 if (newplace
!= sorted_symcount
)
842 thisplace
= newplace
;
845 /* We didn't find a good symbol with a smaller value.
846 Look for one with a larger value. */
847 for (i
= thisplace
+ 1; i
< sorted_symcount
; i
++)
849 if ((sorted_syms
[i
]->section
== sec
|| !want_section
)
850 && info
->symbol_is_valid (sorted_syms
[i
], info
))
858 if ((sorted_syms
[thisplace
]->section
!= sec
&& want_section
)
859 || !info
->symbol_is_valid (sorted_syms
[thisplace
], info
))
860 /* There is no suitable symbol. */
867 return sorted_syms
[thisplace
];
870 /* Print an address and the offset to the nearest symbol. */
873 objdump_print_addr_with_sym (bfd
*abfd
, asection
*sec
, asymbol
*sym
,
874 bfd_vma vma
, struct disassemble_info
*info
,
875 bfd_boolean skip_zeroes
)
877 objdump_print_value (vma
, info
, skip_zeroes
);
883 (*info
->fprintf_func
) (info
->stream
, " <%s",
884 bfd_get_section_name (abfd
, sec
));
885 secaddr
= bfd_get_section_vma (abfd
, sec
);
888 (*info
->fprintf_func
) (info
->stream
, "-0x");
889 objdump_print_value (secaddr
- vma
, info
, TRUE
);
891 else if (vma
> secaddr
)
893 (*info
->fprintf_func
) (info
->stream
, "+0x");
894 objdump_print_value (vma
- secaddr
, info
, TRUE
);
896 (*info
->fprintf_func
) (info
->stream
, ">");
900 (*info
->fprintf_func
) (info
->stream
, " <");
901 objdump_print_symname (abfd
, info
, sym
);
902 if (bfd_asymbol_value (sym
) > vma
)
904 (*info
->fprintf_func
) (info
->stream
, "-0x");
905 objdump_print_value (bfd_asymbol_value (sym
) - vma
, info
, TRUE
);
907 else if (vma
> bfd_asymbol_value (sym
))
909 (*info
->fprintf_func
) (info
->stream
, "+0x");
910 objdump_print_value (vma
- bfd_asymbol_value (sym
), info
, TRUE
);
912 (*info
->fprintf_func
) (info
->stream
, ">");
915 if (display_file_offsets
)
916 info
->fprintf_func (info
->stream
, _(" (File Offset: 0x%lx)"),
917 (long int)(sec
->filepos
+ (vma
- sec
->vma
)));
920 /* Print an address (VMA), symbolically if possible.
921 If SKIP_ZEROES is TRUE, don't output leading zeroes. */
924 objdump_print_addr (bfd_vma vma
,
925 struct disassemble_info
*info
,
926 bfd_boolean skip_zeroes
)
928 struct objdump_disasm_info
*aux
;
930 bfd_boolean skip_find
= FALSE
;
932 aux
= (struct objdump_disasm_info
*) info
->application_data
;
934 if (sorted_symcount
< 1)
936 (*info
->fprintf_func
) (info
->stream
, "0x");
937 objdump_print_value (vma
, info
, skip_zeroes
);
939 if (display_file_offsets
)
940 info
->fprintf_func (info
->stream
, _(" (File Offset: 0x%lx)"),
941 (long int)(aux
->sec
->filepos
+ (vma
- aux
->sec
->vma
)));
945 if (aux
->reloc
!= NULL
946 && aux
->reloc
->sym_ptr_ptr
!= NULL
947 && * aux
->reloc
->sym_ptr_ptr
!= NULL
)
949 sym
= * aux
->reloc
->sym_ptr_ptr
;
951 /* Adjust the vma to the reloc. */
952 vma
+= bfd_asymbol_value (sym
);
954 if (bfd_is_und_section (bfd_get_section (sym
)))
959 sym
= find_symbol_for_address (vma
, info
, NULL
);
961 objdump_print_addr_with_sym (aux
->abfd
, aux
->sec
, sym
, vma
, info
,
965 /* Print VMA to INFO. This function is passed to the disassembler
969 objdump_print_address (bfd_vma vma
, struct disassemble_info
*info
)
971 objdump_print_addr (vma
, info
, ! prefix_addresses
);
974 /* Determine if the given address has a symbol associated with it. */
977 objdump_symbol_at_address (bfd_vma vma
, struct disassemble_info
* info
)
981 sym
= find_symbol_for_address (vma
, info
, NULL
);
983 return (sym
!= NULL
&& (bfd_asymbol_value (sym
) == vma
));
986 /* Hold the last function name and the last line number we displayed
989 static char *prev_functionname
;
990 static unsigned int prev_line
;
992 /* We keep a list of all files that we have seen when doing a
993 disassembly with source, so that we know how much of the file to
994 display. This can be important for inlined functions. */
996 struct print_file_list
998 struct print_file_list
*next
;
999 const char *filename
;
1000 const char *modname
;
1003 const char **linemap
;
1009 static struct print_file_list
*print_files
;
1011 /* The number of preceding context lines to show when we start
1012 displaying a file for the first time. */
1014 #define SHOW_PRECEDING_CONTEXT_LINES (5)
1016 /* Read a complete file into memory. */
1019 slurp_file (const char *fn
, size_t *size
)
1022 int ps
= getpagesize ();
1027 int fd
= open (fn
, O_RDONLY
| O_BINARY
);
1031 if (fstat (fd
, &st
) < 0)
1035 msize
= (*size
+ ps
- 1) & ~(ps
- 1);
1036 map
= mmap (NULL
, msize
, PROT_READ
, MAP_SHARED
, fd
, 0);
1037 if (map
!= (char *)-1L)
1043 map
= malloc (*size
);
1044 if (!map
|| (size_t) read (fd
, (char *)map
, *size
) != *size
)
1053 #define line_map_decrease 5
1055 /* Precompute array of lines for a mapped file. */
1057 static const char **
1058 index_file (const char *map
, size_t size
, unsigned int *maxline
)
1060 const char *p
, *lstart
, *end
;
1061 int chars_per_line
= 45; /* First iteration will use 40. */
1062 unsigned int lineno
;
1063 const char **linemap
= NULL
;
1064 unsigned long line_map_size
= 0;
1070 for (p
= map
; p
< end
; p
++)
1074 if (p
+ 1 < end
&& p
[1] == '\r')
1077 else if (*p
== '\r')
1079 if (p
+ 1 < end
&& p
[1] == '\n')
1085 /* End of line found. */
1087 if (linemap
== NULL
|| line_map_size
< lineno
+ 1)
1089 unsigned long newsize
;
1091 chars_per_line
-= line_map_decrease
;
1092 if (chars_per_line
<= 1)
1094 line_map_size
= size
/ chars_per_line
+ 1;
1095 if (line_map_size
< lineno
+ 1)
1096 line_map_size
= lineno
+ 1;
1097 newsize
= line_map_size
* sizeof (char *);
1098 linemap
= xrealloc (linemap
, newsize
);
1101 linemap
[lineno
++] = lstart
;
1109 /* Tries to open MODNAME, and if successful adds a node to print_files
1110 linked list and returns that node. Returns NULL on failure. */
1112 static struct print_file_list
*
1113 try_print_file_open (const char *origname
, const char *modname
)
1115 struct print_file_list
*p
;
1117 p
= xmalloc (sizeof (struct print_file_list
));
1119 p
->map
= slurp_file (modname
, &p
->mapsize
);
1126 p
->linemap
= index_file (p
->map
, p
->mapsize
, &p
->maxline
);
1128 p
->filename
= origname
;
1129 p
->modname
= modname
;
1130 p
->next
= print_files
;
1136 /* If the the source file, as described in the symtab, is not found
1137 try to locate it in one of the paths specified with -I
1138 If found, add location to print_files linked list. */
1140 static struct print_file_list
*
1141 update_source_path (const char *filename
)
1143 struct print_file_list
*p
;
1147 if (filename
== NULL
)
1150 p
= try_print_file_open (filename
, filename
);
1154 if (include_path_count
== 0)
1157 /* Get the name of the file. */
1158 fname
= strrchr (filename
, '/');
1159 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
1161 /* We could have a mixed forward/back slash case. */
1162 char *backslash
= strrchr (filename
, '\\');
1163 if (fname
== NULL
|| (backslash
!= NULL
&& backslash
> fname
))
1165 if (fname
== NULL
&& filename
[0] != '\0' && filename
[1] == ':')
1166 fname
= filename
+ 1;
1174 /* If file exists under a new path, we need to add it to the list
1175 so that show_line knows about it. */
1176 for (i
= 0; i
< include_path_count
; i
++)
1178 char *modname
= concat (include_paths
[i
], "/", fname
, (const char *) 0);
1180 p
= try_print_file_open (filename
, modname
);
1190 /* Print a source file line. */
1193 print_line (struct print_file_list
*p
, unsigned int line
)
1199 if (line
>= p
->maxline
)
1201 l
= p
->linemap
[line
];
1202 /* Test fwrite return value to quiet glibc warning. */
1203 len
= strcspn (l
, "\n\r");
1204 if (len
== 0 || fwrite (l
, len
, 1, stdout
) == 1)
1208 /* Print a range of source code lines. */
1211 dump_lines (struct print_file_list
*p
, unsigned int start
, unsigned int end
)
1215 while (start
<= end
)
1217 print_line (p
, start
);
1222 /* Show the line number, or the source line, in a disassembly
1226 show_line (bfd
*abfd
, asection
*section
, bfd_vma addr_offset
)
1228 const char *filename
;
1229 const char *functionname
;
1233 if (! with_line_numbers
&& ! with_source_code
)
1236 if (! bfd_find_nearest_line (abfd
, section
, syms
, addr_offset
, &filename
,
1237 &functionname
, &line
))
1240 if (filename
!= NULL
&& *filename
== '\0')
1242 if (functionname
!= NULL
&& *functionname
== '\0')
1243 functionname
= NULL
;
1246 && IS_ABSOLUTE_PATH (filename
)
1250 const char *fname
= filename
;
1251 char *path
= (char *) alloca (prefix_length
+ PATH_MAX
+ 1);
1254 memcpy (path
, prefix
, prefix_length
);
1255 path_up
= path
+ prefix_length
;
1257 /* Build relocated filename, stripping off leading directories
1258 from the initial filename if requested. */
1259 if (prefix_strip
> 0)
1264 /* Skip selected directory levels. */
1265 for (s
= fname
+ 1; *s
!= '\0' && level
< prefix_strip
; s
++)
1266 if (IS_DIR_SEPARATOR(*s
))
1273 /* Update complete filename. */
1274 strncpy (path_up
, fname
, PATH_MAX
);
1275 path_up
[PATH_MAX
] = '\0';
1283 if (with_line_numbers
)
1285 if (functionname
!= NULL
1286 && (prev_functionname
== NULL
1287 || strcmp (functionname
, prev_functionname
) != 0))
1288 printf ("%s():\n", functionname
);
1289 if (line
> 0 && line
!= prev_line
)
1290 printf ("%s:%u\n", filename
== NULL
? "???" : filename
, line
);
1293 if (with_source_code
1297 struct print_file_list
**pp
, *p
;
1300 for (pp
= &print_files
; *pp
!= NULL
; pp
= &(*pp
)->next
)
1301 if (strcmp ((*pp
)->filename
, filename
) == 0)
1308 filename
= xstrdup (filename
);
1309 p
= update_source_path (filename
);
1312 if (p
!= NULL
&& line
!= p
->last_line
)
1314 if (file_start_context
&& p
->first
)
1318 l
= line
- SHOW_PRECEDING_CONTEXT_LINES
;
1321 if (p
->last_line
>= l
&& p
->last_line
<= line
)
1322 l
= p
->last_line
+ 1;
1324 dump_lines (p
, l
, line
);
1325 p
->last_line
= line
;
1330 if (functionname
!= NULL
1331 && (prev_functionname
== NULL
1332 || strcmp (functionname
, prev_functionname
) != 0))
1334 if (prev_functionname
!= NULL
)
1335 free (prev_functionname
);
1336 prev_functionname
= xmalloc (strlen (functionname
) + 1);
1337 strcpy (prev_functionname
, functionname
);
1340 if (line
> 0 && line
!= prev_line
)
1344 /* Pseudo FILE object for strings. */
1352 /* sprintf to a "stream". */
1354 static int ATTRIBUTE_PRINTF_2
1355 objdump_sprintf (SFILE
*f
, const char *format
, ...)
1362 size_t space
= f
->alloc
- f
->pos
;
1364 va_start (args
, format
);
1365 n
= vsnprintf (f
->buffer
+ f
->pos
, space
, format
, args
);
1371 f
->alloc
= (f
->alloc
+ n
) * 2;
1372 f
->buffer
= xrealloc (f
->buffer
, f
->alloc
);
1379 /* The number of zeroes we want to see before we start skipping them.
1380 The number is arbitrarily chosen. */
1382 #define DEFAULT_SKIP_ZEROES 8
1384 /* The number of zeroes to skip at the end of a section. If the
1385 number of zeroes at the end is between SKIP_ZEROES_AT_END and
1386 SKIP_ZEROES, they will be disassembled. If there are fewer than
1387 SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic
1388 attempt to avoid disassembling zeroes inserted by section
1391 #define DEFAULT_SKIP_ZEROES_AT_END 3
1393 /* Disassemble some data in memory between given values. */
1396 disassemble_bytes (struct disassemble_info
* info
,
1397 disassembler_ftype disassemble_fn
,
1400 bfd_vma start_offset
,
1401 bfd_vma stop_offset
,
1404 arelent
** relppend
)
1406 struct objdump_disasm_info
*aux
;
1408 int octets_per_line
;
1409 bfd_boolean done_dot
;
1410 int skip_addr_chars
;
1411 bfd_vma addr_offset
;
1412 unsigned int opb
= info
->octets_per_byte
;
1413 unsigned int skip_zeroes
= info
->skip_zeroes
;
1414 unsigned int skip_zeroes_at_end
= info
->skip_zeroes_at_end
;
1418 aux
= (struct objdump_disasm_info
*) info
->application_data
;
1422 sfile
.buffer
= xmalloc (sfile
.alloc
);
1426 octets_per_line
= insn_width
;
1428 octets_per_line
= 4;
1430 octets_per_line
= 16;
1432 /* Figure out how many characters to skip at the start of an
1433 address, to make the disassembly look nicer. We discard leading
1434 zeroes in chunks of 4, ensuring that there is always a leading
1436 skip_addr_chars
= 0;
1437 if (! prefix_addresses
)
1441 bfd_sprintf_vma (aux
->abfd
, buf
, section
->vma
+ section
->size
/ opb
);
1443 while (buf
[skip_addr_chars
] == '0')
1446 /* Don't discard zeros on overflow. */
1447 if (buf
[skip_addr_chars
] == '\0' && section
->vma
!= 0)
1448 skip_addr_chars
= 0;
1450 if (skip_addr_chars
!= 0)
1451 skip_addr_chars
= (skip_addr_chars
- 1) & -4;
1454 info
->insn_info_valid
= 0;
1457 addr_offset
= start_offset
;
1458 while (addr_offset
< stop_offset
)
1461 bfd_boolean need_nl
= FALSE
;
1462 int previous_octets
;
1464 /* Remember the length of the previous instruction. */
1465 previous_octets
= octets
;
1468 /* If we see more than SKIP_ZEROES octets of zeroes, we just
1470 for (z
= addr_offset
* opb
; z
< stop_offset
* opb
; z
++)
1473 if (! disassemble_zeroes
1474 && (info
->insn_info_valid
== 0
1475 || info
->branch_delay_insns
== 0)
1476 && (z
- addr_offset
* opb
>= skip_zeroes
1477 || (z
== stop_offset
* opb
&&
1478 z
- addr_offset
* opb
< skip_zeroes_at_end
)))
1480 /* If there are more nonzero octets to follow, we only skip
1481 zeroes in multiples of 4, to try to avoid running over
1482 the start of an instruction which happens to start with
1484 if (z
!= stop_offset
* opb
)
1485 z
= addr_offset
* opb
+ ((z
- addr_offset
* opb
) &~ 3);
1487 octets
= z
- addr_offset
* opb
;
1489 /* If we are going to display more data, and we are displaying
1490 file offsets, then tell the user how many zeroes we skip
1491 and the file offset from where we resume dumping. */
1492 if (display_file_offsets
&& ((addr_offset
+ (octets
/ opb
)) < stop_offset
))
1493 printf ("\t... (skipping %d zeroes, resuming at file offset: 0x%lx)\n",
1495 (unsigned long) (section
->filepos
1496 + (addr_offset
+ (octets
/ opb
))));
1508 if (with_line_numbers
|| with_source_code
)
1509 show_line (aux
->abfd
, section
, addr_offset
);
1511 if (! prefix_addresses
)
1515 bfd_sprintf_vma (aux
->abfd
, buf
, section
->vma
+ addr_offset
);
1516 for (s
= buf
+ skip_addr_chars
; *s
== '0'; s
++)
1520 printf ("%s:\t", buf
+ skip_addr_chars
);
1524 aux
->require_sec
= TRUE
;
1525 objdump_print_address (section
->vma
+ addr_offset
, info
);
1526 aux
->require_sec
= FALSE
;
1533 info
->fprintf_func
= (fprintf_ftype
) objdump_sprintf
;
1534 info
->stream
= &sfile
;
1535 info
->bytes_per_line
= 0;
1536 info
->bytes_per_chunk
= 0;
1537 info
->flags
= disassemble_all
? DISASSEMBLE_DATA
: 0;
1539 info
->flags
|= USER_SPECIFIED_MACHINE_TYPE
;
1541 if (info
->disassembler_needs_relocs
1542 && (bfd_get_file_flags (aux
->abfd
) & EXEC_P
) == 0
1543 && (bfd_get_file_flags (aux
->abfd
) & DYNAMIC
) == 0
1544 && *relppp
< relppend
)
1546 bfd_signed_vma distance_to_rel
;
1548 distance_to_rel
= (**relppp
)->address
1549 - (rel_offset
+ addr_offset
);
1551 /* Check to see if the current reloc is associated with
1552 the instruction that we are about to disassemble. */
1553 if (distance_to_rel
== 0
1554 /* FIXME: This is wrong. We are trying to catch
1555 relocs that are addressed part way through the
1556 current instruction, as might happen with a packed
1557 VLIW instruction. Unfortunately we do not know the
1558 length of the current instruction since we have not
1559 disassembled it yet. Instead we take a guess based
1560 upon the length of the previous instruction. The
1561 proper solution is to have a new target-specific
1562 disassembler function which just returns the length
1563 of an instruction at a given address without trying
1564 to display its disassembly. */
1565 || (distance_to_rel
> 0
1566 && distance_to_rel
< (bfd_signed_vma
) (previous_octets
/ opb
)))
1568 info
->flags
|= INSN_HAS_RELOC
;
1569 aux
->reloc
= **relppp
;
1575 octets
= (*disassemble_fn
) (section
->vma
+ addr_offset
, info
);
1576 info
->fprintf_func
= (fprintf_ftype
) fprintf
;
1577 info
->stream
= stdout
;
1578 if (insn_width
== 0 && info
->bytes_per_line
!= 0)
1579 octets_per_line
= info
->bytes_per_line
;
1583 printf ("%s\n", sfile
.buffer
);
1591 octets
= octets_per_line
;
1592 if (addr_offset
+ octets
/ opb
> stop_offset
)
1593 octets
= (stop_offset
- addr_offset
) * opb
;
1595 for (j
= addr_offset
* opb
; j
< addr_offset
* opb
+ octets
; ++j
)
1597 if (ISPRINT (data
[j
]))
1598 buf
[j
- addr_offset
* opb
] = data
[j
];
1600 buf
[j
- addr_offset
* opb
] = '.';
1602 buf
[j
- addr_offset
* opb
] = '\0';
1605 if (prefix_addresses
1607 : show_raw_insn
>= 0)
1611 /* If ! prefix_addresses and ! wide_output, we print
1612 octets_per_line octets per line. */
1614 if (pb
> octets_per_line
&& ! prefix_addresses
&& ! wide_output
)
1615 pb
= octets_per_line
;
1617 if (info
->bytes_per_chunk
)
1618 bpc
= info
->bytes_per_chunk
;
1622 for (j
= addr_offset
* opb
; j
< addr_offset
* opb
+ pb
; j
+= bpc
)
1626 if (bpc
> 1 && info
->display_endian
== BFD_ENDIAN_LITTLE
)
1628 for (k
= bpc
- 1; k
>= 0; k
--)
1629 printf ("%02x", (unsigned) data
[j
+ k
]);
1634 for (k
= 0; k
< bpc
; k
++)
1635 printf ("%02x", (unsigned) data
[j
+ k
]);
1640 for (; pb
< octets_per_line
; pb
+= bpc
)
1644 for (k
= 0; k
< bpc
; k
++)
1649 /* Separate raw data from instruction by extra space. */
1659 printf ("%s", sfile
.buffer
);
1661 if (prefix_addresses
1663 : show_raw_insn
>= 0)
1671 j
= addr_offset
* opb
+ pb
;
1673 bfd_sprintf_vma (aux
->abfd
, buf
, section
->vma
+ j
/ opb
);
1674 for (s
= buf
+ skip_addr_chars
; *s
== '0'; s
++)
1678 printf ("%s:\t", buf
+ skip_addr_chars
);
1680 pb
+= octets_per_line
;
1683 for (; j
< addr_offset
* opb
+ pb
; j
+= bpc
)
1687 if (bpc
> 1 && info
->display_endian
== BFD_ENDIAN_LITTLE
)
1689 for (k
= bpc
- 1; k
>= 0; k
--)
1690 printf ("%02x", (unsigned) data
[j
+ k
]);
1695 for (k
= 0; k
< bpc
; k
++)
1696 printf ("%02x", (unsigned) data
[j
+ k
]);
1709 while ((*relppp
) < relppend
1710 && (**relppp
)->address
< rel_offset
+ addr_offset
+ octets
/ opb
)
1712 if (dump_reloc_info
|| dump_dynamic_reloc_info
)
1723 objdump_print_value (section
->vma
- rel_offset
+ q
->address
,
1726 if (q
->howto
== NULL
)
1727 printf (": *unknown*\t");
1728 else if (q
->howto
->name
)
1729 printf (": %s\t", q
->howto
->name
);
1731 printf (": %d\t", q
->howto
->type
);
1733 if (q
->sym_ptr_ptr
== NULL
|| *q
->sym_ptr_ptr
== NULL
)
1734 printf ("*unknown*");
1737 const char *sym_name
;
1739 sym_name
= bfd_asymbol_name (*q
->sym_ptr_ptr
);
1740 if (sym_name
!= NULL
&& *sym_name
!= '\0')
1741 objdump_print_symname (aux
->abfd
, info
, *q
->sym_ptr_ptr
);
1746 sym_sec
= bfd_get_section (*q
->sym_ptr_ptr
);
1747 sym_name
= bfd_get_section_name (aux
->abfd
, sym_sec
);
1748 if (sym_name
== NULL
|| *sym_name
== '\0')
1749 sym_name
= "*unknown*";
1750 printf ("%s", sym_name
);
1757 objdump_print_value (q
->addend
, info
, TRUE
);
1769 addr_offset
+= octets
/ opb
;
1772 free (sfile
.buffer
);
1776 disassemble_section (bfd
*abfd
, asection
*section
, void *info
)
1778 const struct elf_backend_data
* bed
;
1779 bfd_vma sign_adjust
= 0;
1780 struct disassemble_info
* pinfo
= (struct disassemble_info
*) info
;
1781 struct objdump_disasm_info
* paux
;
1782 unsigned int opb
= pinfo
->octets_per_byte
;
1783 bfd_byte
* data
= NULL
;
1784 bfd_size_type datasize
= 0;
1785 arelent
** rel_pp
= NULL
;
1786 arelent
** rel_ppstart
= NULL
;
1787 arelent
** rel_ppend
;
1788 unsigned long stop_offset
;
1789 asymbol
* sym
= NULL
;
1793 unsigned long addr_offset
;
1795 /* Sections that do not contain machine
1796 code are not normally disassembled. */
1797 if (! disassemble_all
1799 && ((section
->flags
& (SEC_CODE
| SEC_HAS_CONTENTS
))
1800 != (SEC_CODE
| SEC_HAS_CONTENTS
)))
1803 if (! process_section_p (section
))
1806 datasize
= bfd_get_section_size (section
);
1810 /* Decide which set of relocs to use. Load them if necessary. */
1811 paux
= (struct objdump_disasm_info
*) pinfo
->application_data
;
1812 if (paux
->dynrelbuf
)
1814 rel_pp
= paux
->dynrelbuf
;
1815 rel_count
= paux
->dynrelcount
;
1816 /* Dynamic reloc addresses are absolute, non-dynamic are section
1817 relative. REL_OFFSET specifies the reloc address corresponding
1818 to the start of this section. */
1819 rel_offset
= section
->vma
;
1827 if ((section
->flags
& SEC_RELOC
) != 0
1828 && (dump_reloc_info
|| pinfo
->disassembler_needs_relocs
))
1832 relsize
= bfd_get_reloc_upper_bound (abfd
, section
);
1834 bfd_fatal (bfd_get_filename (abfd
));
1838 rel_ppstart
= rel_pp
= xmalloc (relsize
);
1839 rel_count
= bfd_canonicalize_reloc (abfd
, section
, rel_pp
, syms
);
1841 bfd_fatal (bfd_get_filename (abfd
));
1843 /* Sort the relocs by address. */
1844 qsort (rel_pp
, rel_count
, sizeof (arelent
*), compare_relocs
);
1848 rel_ppend
= rel_pp
+ rel_count
;
1850 data
= xmalloc (datasize
);
1852 bfd_get_section_contents (abfd
, section
, data
, 0, datasize
);
1854 paux
->sec
= section
;
1855 pinfo
->buffer
= data
;
1856 pinfo
->buffer_vma
= section
->vma
;
1857 pinfo
->buffer_length
= datasize
;
1858 pinfo
->section
= section
;
1860 if (start_address
== (bfd_vma
) -1
1861 || start_address
< pinfo
->buffer_vma
)
1864 addr_offset
= start_address
- pinfo
->buffer_vma
;
1866 if (stop_address
== (bfd_vma
) -1)
1867 stop_offset
= datasize
/ opb
;
1870 if (stop_address
< pinfo
->buffer_vma
)
1873 stop_offset
= stop_address
- pinfo
->buffer_vma
;
1874 if (stop_offset
> pinfo
->buffer_length
/ opb
)
1875 stop_offset
= pinfo
->buffer_length
/ opb
;
1878 /* Skip over the relocs belonging to addresses below the
1880 while (rel_pp
< rel_ppend
1881 && (*rel_pp
)->address
< rel_offset
+ addr_offset
)
1884 if (addr_offset
< stop_offset
)
1885 printf (_("\nDisassembly of section %s:\n"), section
->name
);
1887 /* Find the nearest symbol forwards from our current position. */
1888 paux
->require_sec
= TRUE
;
1889 sym
= find_symbol_for_address (section
->vma
+ addr_offset
, info
, &place
);
1890 paux
->require_sec
= FALSE
;
1892 /* PR 9774: If the target used signed 32-bit addresses then we must make
1893 sure that we sign extend the value that we calculate for 'addr' in the
1895 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1896 && (bed
= get_elf_backend_data (abfd
)) != NULL
1897 && bed
->sign_extend_vma
)
1898 sign_adjust
= 0x80000000;
1900 /* Disassemble a block of instructions up to the address associated with
1901 the symbol we have just found. Then print the symbol and find the
1902 next symbol on. Repeat until we have disassembled the entire section
1903 or we have reached the end of the address range we are interested in. */
1904 while (addr_offset
< stop_offset
)
1908 unsigned long nextstop_offset
;
1911 addr
= section
->vma
+ addr_offset
;
1912 addr
= ((addr
& ((sign_adjust
<< 1) - 1)) ^ sign_adjust
) - sign_adjust
;
1914 if (sym
!= NULL
&& bfd_asymbol_value (sym
) <= addr
)
1919 (x
< sorted_symcount
1920 && (bfd_asymbol_value (sorted_syms
[x
]) <= addr
));
1924 pinfo
->symbols
= sorted_syms
+ place
;
1925 pinfo
->num_symbols
= x
- place
;
1926 pinfo
->symtab_pos
= place
;
1930 pinfo
->symbols
= NULL
;
1931 pinfo
->num_symbols
= 0;
1932 pinfo
->symtab_pos
= -1;
1935 if (! prefix_addresses
)
1937 pinfo
->fprintf_func (pinfo
->stream
, "\n");
1938 objdump_print_addr_with_sym (abfd
, section
, sym
, addr
,
1940 pinfo
->fprintf_func (pinfo
->stream
, ":\n");
1943 if (sym
!= NULL
&& bfd_asymbol_value (sym
) > addr
)
1945 else if (sym
== NULL
)
1949 #define is_valid_next_sym(SYM) \
1950 ((SYM)->section == section \
1951 && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
1952 && pinfo->symbol_is_valid (SYM, pinfo))
1954 /* Search forward for the next appropriate symbol in
1955 SECTION. Note that all the symbols are sorted
1956 together into one big array, and that some sections
1957 may have overlapping addresses. */
1958 while (place
< sorted_symcount
1959 && ! is_valid_next_sym (sorted_syms
[place
]))
1962 if (place
>= sorted_symcount
)
1965 nextsym
= sorted_syms
[place
];
1968 if (sym
!= NULL
&& bfd_asymbol_value (sym
) > addr
)
1969 nextstop_offset
= bfd_asymbol_value (sym
) - section
->vma
;
1970 else if (nextsym
== NULL
)
1971 nextstop_offset
= stop_offset
;
1973 nextstop_offset
= bfd_asymbol_value (nextsym
) - section
->vma
;
1975 if (nextstop_offset
> stop_offset
1976 || nextstop_offset
<= addr_offset
)
1977 nextstop_offset
= stop_offset
;
1979 /* If a symbol is explicitly marked as being an object
1980 rather than a function, just dump the bytes without
1981 disassembling them. */
1984 || sym
->section
!= section
1985 || bfd_asymbol_value (sym
) > addr
1986 || ((sym
->flags
& BSF_OBJECT
) == 0
1987 && (strstr (bfd_asymbol_name (sym
), "gnu_compiled")
1989 && (strstr (bfd_asymbol_name (sym
), "gcc2_compiled")
1991 || (sym
->flags
& BSF_FUNCTION
) != 0)
1996 disassemble_bytes (pinfo
, paux
->disassemble_fn
, insns
, data
,
1997 addr_offset
, nextstop_offset
,
1998 rel_offset
, &rel_pp
, rel_ppend
);
2000 addr_offset
= nextstop_offset
;
2006 if (rel_ppstart
!= NULL
)
2010 /* Disassemble the contents of an object file. */
2013 disassemble_data (bfd
*abfd
)
2015 struct disassemble_info disasm_info
;
2016 struct objdump_disasm_info aux
;
2020 prev_functionname
= NULL
;
2023 /* We make a copy of syms to sort. We don't want to sort syms
2024 because that will screw up the relocs. */
2025 sorted_symcount
= symcount
? symcount
: dynsymcount
;
2026 sorted_syms
= xmalloc ((sorted_symcount
+ synthcount
) * sizeof (asymbol
*));
2027 memcpy (sorted_syms
, symcount
? syms
: dynsyms
,
2028 sorted_symcount
* sizeof (asymbol
*));
2030 sorted_symcount
= remove_useless_symbols (sorted_syms
, sorted_symcount
);
2032 for (i
= 0; i
< synthcount
; ++i
)
2034 sorted_syms
[sorted_symcount
] = synthsyms
+ i
;
2038 /* Sort the symbols into section and symbol order. */
2039 qsort (sorted_syms
, sorted_symcount
, sizeof (asymbol
*), compare_symbols
);
2041 init_disassemble_info (&disasm_info
, stdout
, (fprintf_ftype
) fprintf
);
2043 disasm_info
.application_data
= (void *) &aux
;
2045 aux
.require_sec
= FALSE
;
2046 aux
.dynrelbuf
= NULL
;
2047 aux
.dynrelcount
= 0;
2050 disasm_info
.print_address_func
= objdump_print_address
;
2051 disasm_info
.symbol_at_address_func
= objdump_symbol_at_address
;
2053 if (machine
!= NULL
)
2055 const bfd_arch_info_type
*info
= bfd_scan_arch (machine
);
2058 fatal (_("Can't use supplied machine %s"), machine
);
2060 abfd
->arch_info
= info
;
2063 if (endian
!= BFD_ENDIAN_UNKNOWN
)
2065 struct bfd_target
*xvec
;
2067 xvec
= xmalloc (sizeof (struct bfd_target
));
2068 memcpy (xvec
, abfd
->xvec
, sizeof (struct bfd_target
));
2069 xvec
->byteorder
= endian
;
2073 /* Use libopcodes to locate a suitable disassembler. */
2074 aux
.disassemble_fn
= disassembler (abfd
);
2075 if (!aux
.disassemble_fn
)
2077 non_fatal (_("Can't disassemble for architecture %s\n"),
2078 bfd_printable_arch_mach (bfd_get_arch (abfd
), 0));
2083 disasm_info
.flavour
= bfd_get_flavour (abfd
);
2084 disasm_info
.arch
= bfd_get_arch (abfd
);
2085 disasm_info
.mach
= bfd_get_mach (abfd
);
2086 disasm_info
.disassembler_options
= disassembler_options
;
2087 disasm_info
.octets_per_byte
= bfd_octets_per_byte (abfd
);
2088 disasm_info
.skip_zeroes
= DEFAULT_SKIP_ZEROES
;
2089 disasm_info
.skip_zeroes_at_end
= DEFAULT_SKIP_ZEROES_AT_END
;
2090 disasm_info
.disassembler_needs_relocs
= FALSE
;
2092 if (bfd_big_endian (abfd
))
2093 disasm_info
.display_endian
= disasm_info
.endian
= BFD_ENDIAN_BIG
;
2094 else if (bfd_little_endian (abfd
))
2095 disasm_info
.display_endian
= disasm_info
.endian
= BFD_ENDIAN_LITTLE
;
2097 /* ??? Aborting here seems too drastic. We could default to big or little
2099 disasm_info
.endian
= BFD_ENDIAN_UNKNOWN
;
2101 /* Allow the target to customize the info structure. */
2102 disassemble_init_for_target (& disasm_info
);
2104 /* Pre-load the dynamic relocs if we are going
2105 to be dumping them along with the disassembly. */
2106 if (dump_dynamic_reloc_info
)
2108 long relsize
= bfd_get_dynamic_reloc_upper_bound (abfd
);
2111 bfd_fatal (bfd_get_filename (abfd
));
2115 aux
.dynrelbuf
= xmalloc (relsize
);
2116 aux
.dynrelcount
= bfd_canonicalize_dynamic_reloc (abfd
,
2119 if (aux
.dynrelcount
< 0)
2120 bfd_fatal (bfd_get_filename (abfd
));
2122 /* Sort the relocs by address. */
2123 qsort (aux
.dynrelbuf
, aux
.dynrelcount
, sizeof (arelent
*),
2127 disasm_info
.symtab
= sorted_syms
;
2128 disasm_info
.symtab_size
= sorted_symcount
;
2130 bfd_map_over_sections (abfd
, disassemble_section
, & disasm_info
);
2132 if (aux
.dynrelbuf
!= NULL
)
2133 free (aux
.dynrelbuf
);
2138 load_specific_debug_section (enum dwarf_section_display_enum debug
,
2139 asection
*sec
, void *file
)
2141 struct dwarf_section
*section
= &debug_displays
[debug
].section
;
2144 int section_is_compressed
;
2146 /* If it is already loaded, do nothing. */
2147 if (section
->start
!= NULL
)
2150 section_is_compressed
= section
->name
== section
->compressed_name
;
2152 section
->address
= 0;
2153 section
->size
= bfd_get_section_size (sec
);
2154 section
->start
= xmalloc (section
->size
);
2156 if (is_relocatable
&& debug_displays
[debug
].relocate
)
2157 ret
= bfd_simple_get_relocated_section_contents (abfd
,
2162 ret
= bfd_get_section_contents (abfd
, sec
, section
->start
, 0,
2167 free_debug_section (debug
);
2168 printf (_("\nCan't get contents for section '%s'.\n"),
2173 if (section_is_compressed
)
2175 bfd_size_type size
= section
->size
;
2176 if (! bfd_uncompress_section_contents (§ion
->start
, &size
))
2178 free_debug_section (debug
);
2179 printf (_("\nCan't uncompress section '%s'.\n"), section
->name
);
2182 section
->size
= size
;
2189 load_debug_section (enum dwarf_section_display_enum debug
, void *file
)
2191 struct dwarf_section
*section
= &debug_displays
[debug
].section
;
2195 /* If it is already loaded, do nothing. */
2196 if (section
->start
!= NULL
)
2199 /* Locate the debug section. */
2200 sec
= bfd_get_section_by_name (abfd
, section
->uncompressed_name
);
2202 section
->name
= section
->uncompressed_name
;
2205 sec
= bfd_get_section_by_name (abfd
, section
->compressed_name
);
2207 section
->name
= section
->compressed_name
;
2212 return load_specific_debug_section (debug
, sec
, file
);
2216 free_debug_section (enum dwarf_section_display_enum debug
)
2218 struct dwarf_section
*section
= &debug_displays
[debug
].section
;
2220 if (section
->start
== NULL
)
2223 free ((char *) section
->start
);
2224 section
->start
= NULL
;
2225 section
->address
= 0;
2230 dump_dwarf_section (bfd
*abfd
, asection
*section
,
2231 void *arg ATTRIBUTE_UNUSED
)
2233 const char *name
= bfd_get_section_name (abfd
, section
);
2235 enum dwarf_section_display_enum i
;
2237 if (CONST_STRNEQ (name
, ".gnu.linkonce.wi."))
2238 match
= ".debug_info";
2242 for (i
= 0; i
< max
; i
++)
2243 if ((strcmp (debug_displays
[i
].section
.uncompressed_name
, match
) == 0
2244 || strcmp (debug_displays
[i
].section
.compressed_name
, match
) == 0)
2245 && debug_displays
[i
].enabled
!= NULL
2246 && *debug_displays
[i
].enabled
)
2248 struct dwarf_section
*sec
= &debug_displays
[i
].section
;
2250 if (strcmp (sec
->uncompressed_name
, match
) == 0)
2251 sec
->name
= sec
->uncompressed_name
;
2253 sec
->name
= sec
->compressed_name
;
2254 if (load_specific_debug_section (i
, section
, abfd
))
2256 debug_displays
[i
].display (sec
, abfd
);
2258 if (i
!= info
&& i
!= abbrev
)
2259 free_debug_section (i
);
2265 /* Dump the dwarf debugging information. */
2268 dump_dwarf (bfd
*abfd
)
2270 is_relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
2272 /* FIXME: bfd_get_arch_size may return -1. We assume that 64bit
2273 targets will return 64. */
2274 eh_addr_size
= bfd_get_arch_size (abfd
) == 64 ? 8 : 4;
2276 if (bfd_big_endian (abfd
))
2277 byte_get
= byte_get_big_endian
;
2278 else if (bfd_little_endian (abfd
))
2279 byte_get
= byte_get_little_endian
;
2283 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
2285 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2286 init_dwarf_regnames (bed
->elf_machine_code
);
2289 bfd_map_over_sections (abfd
, dump_dwarf_section
, NULL
);
2291 free_debug_memory ();
2294 /* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
2295 it. Return NULL on failure. */
2298 read_section_stabs (bfd
*abfd
, const char *sect_name
, bfd_size_type
*size_ptr
)
2304 stabsect
= bfd_get_section_by_name (abfd
, sect_name
);
2305 if (stabsect
== NULL
)
2307 printf (_("No %s section present\n\n"), sect_name
);
2311 size
= bfd_section_size (abfd
, stabsect
);
2312 contents
= xmalloc (size
);
2314 if (! bfd_get_section_contents (abfd
, stabsect
, contents
, 0, size
))
2316 non_fatal (_("Reading %s section of %s failed: %s"),
2317 sect_name
, bfd_get_filename (abfd
),
2318 bfd_errmsg (bfd_get_error ()));
2329 /* Stabs entries use a 12 byte format:
2330 4 byte string table index
2332 1 byte stab other field
2333 2 byte stab desc field
2335 FIXME: This will have to change for a 64 bit object format. */
2337 #define STRDXOFF (0)
2339 #define OTHEROFF (5)
2342 #define STABSIZE (12)
2344 /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
2345 using string table section STRSECT_NAME (in `strtab'). */
2348 print_section_stabs (bfd
*abfd
,
2349 const char *stabsect_name
,
2350 unsigned *string_offset_ptr
)
2353 unsigned file_string_table_offset
= 0;
2354 unsigned next_file_string_table_offset
= *string_offset_ptr
;
2355 bfd_byte
*stabp
, *stabs_end
;
2358 stabs_end
= stabp
+ stab_size
;
2360 printf (_("Contents of %s section:\n\n"), stabsect_name
);
2361 printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
2363 /* Loop through all symbols and print them.
2365 We start the index at -1 because there is a dummy symbol on
2366 the front of stabs-in-{coff,elf} sections that supplies sizes. */
2367 for (i
= -1; stabp
< stabs_end
; stabp
+= STABSIZE
, i
++)
2371 unsigned char type
, other
;
2372 unsigned short desc
;
2375 strx
= bfd_h_get_32 (abfd
, stabp
+ STRDXOFF
);
2376 type
= bfd_h_get_8 (abfd
, stabp
+ TYPEOFF
);
2377 other
= bfd_h_get_8 (abfd
, stabp
+ OTHEROFF
);
2378 desc
= bfd_h_get_16 (abfd
, stabp
+ DESCOFF
);
2379 value
= bfd_h_get_32 (abfd
, stabp
+ VALOFF
);
2381 printf ("\n%-6d ", i
);
2382 /* Either print the stab name, or, if unnamed, print its number
2383 again (makes consistent formatting for tools like awk). */
2384 name
= bfd_get_stab_name (type
);
2386 printf ("%-6s", name
);
2387 else if (type
== N_UNDF
)
2390 printf ("%-6d", type
);
2391 printf (" %-6d %-6d ", other
, desc
);
2392 bfd_printf_vma (abfd
, value
);
2393 printf (" %-6lu", strx
);
2395 /* Symbols with type == 0 (N_UNDF) specify the length of the
2396 string table associated with this file. We use that info
2397 to know how to relocate the *next* file's string table indices. */
2400 file_string_table_offset
= next_file_string_table_offset
;
2401 next_file_string_table_offset
+= value
;
2405 /* Using the (possibly updated) string table offset, print the
2406 string (if any) associated with this symbol. */
2407 if ((strx
+ file_string_table_offset
) < stabstr_size
)
2408 printf (" %s", &strtab
[strx
+ file_string_table_offset
]);
2414 *string_offset_ptr
= next_file_string_table_offset
;
2419 const char * section_name
;
2420 const char * string_section_name
;
2421 unsigned string_offset
;
2426 find_stabs_section (bfd
*abfd
, asection
*section
, void *names
)
2429 stab_section_names
* sought
= (stab_section_names
*) names
;
2431 /* Check for section names for which stabsect_name is a prefix, to
2432 handle .stab.N, etc. */
2433 len
= strlen (sought
->section_name
);
2435 /* If the prefix matches, and the files section name ends with a
2436 nul or a digit, then we match. I.e., we want either an exact
2437 match or a section followed by a number. */
2438 if (strncmp (sought
->section_name
, section
->name
, len
) == 0
2439 && (section
->name
[len
] == 0
2440 || (section
->name
[len
] == '.' && ISDIGIT (section
->name
[len
+ 1]))))
2443 strtab
= read_section_stabs (abfd
, sought
->string_section_name
,
2448 stabs
= (bfd_byte
*) read_section_stabs (abfd
, section
->name
,
2451 print_section_stabs (abfd
, section
->name
, &sought
->string_offset
);
2457 dump_stabs_section (bfd
*abfd
, char *stabsect_name
, char *strsect_name
)
2459 stab_section_names s
;
2461 s
.section_name
= stabsect_name
;
2462 s
.string_section_name
= strsect_name
;
2463 s
.string_offset
= 0;
2465 bfd_map_over_sections (abfd
, find_stabs_section
, & s
);
2471 /* Dump the any sections containing stabs debugging information. */
2474 dump_stabs (bfd
*abfd
)
2476 dump_stabs_section (abfd
, ".stab", ".stabstr");
2477 dump_stabs_section (abfd
, ".stab.excl", ".stab.exclstr");
2478 dump_stabs_section (abfd
, ".stab.index", ".stab.indexstr");
2481 dump_stabs_section (abfd
, "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr");
2483 dump_stabs_section (abfd
, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
2487 dump_bfd_header (bfd
*abfd
)
2491 printf (_("architecture: %s, "),
2492 bfd_printable_arch_mach (bfd_get_arch (abfd
),
2493 bfd_get_mach (abfd
)));
2494 printf (_("flags 0x%08x:\n"), abfd
->flags
);
2496 #define PF(x, y) if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
2497 PF (HAS_RELOC
, "HAS_RELOC");
2498 PF (EXEC_P
, "EXEC_P");
2499 PF (HAS_LINENO
, "HAS_LINENO");
2500 PF (HAS_DEBUG
, "HAS_DEBUG");
2501 PF (HAS_SYMS
, "HAS_SYMS");
2502 PF (HAS_LOCALS
, "HAS_LOCALS");
2503 PF (DYNAMIC
, "DYNAMIC");
2504 PF (WP_TEXT
, "WP_TEXT");
2505 PF (D_PAGED
, "D_PAGED");
2506 PF (BFD_IS_RELAXABLE
, "BFD_IS_RELAXABLE");
2507 PF (HAS_LOAD_PAGE
, "HAS_LOAD_PAGE");
2508 printf (_("\nstart address 0x"));
2509 bfd_printf_vma (abfd
, abfd
->start_address
);
2515 dump_bfd_private_header (bfd
*abfd
)
2517 bfd_print_private_bfd_data (abfd
, stdout
);
2521 /* Display a section in hexadecimal format with associated characters.
2522 Each line prefixed by the zero padded address. */
2525 dump_section (bfd
*abfd
, asection
*section
, void *dummy ATTRIBUTE_UNUSED
)
2528 bfd_size_type datasize
;
2529 bfd_size_type addr_offset
;
2530 bfd_size_type start_offset
;
2531 bfd_size_type stop_offset
;
2532 unsigned int opb
= bfd_octets_per_byte (abfd
);
2533 /* Bytes per line. */
2534 const int onaline
= 16;
2539 if ((section
->flags
& SEC_HAS_CONTENTS
) == 0)
2542 if (! process_section_p (section
))
2545 if ((datasize
= bfd_section_size (abfd
, section
)) == 0)
2548 /* Compute the address range to display. */
2549 if (start_address
== (bfd_vma
) -1
2550 || start_address
< section
->vma
)
2553 start_offset
= start_address
- section
->vma
;
2555 if (stop_address
== (bfd_vma
) -1)
2556 stop_offset
= datasize
/ opb
;
2559 if (stop_address
< section
->vma
)
2562 stop_offset
= stop_address
- section
->vma
;
2564 if (stop_offset
> datasize
/ opb
)
2565 stop_offset
= datasize
/ opb
;
2568 if (start_offset
>= stop_offset
)
2571 printf (_("Contents of section %s:"), section
->name
);
2572 if (display_file_offsets
)
2573 printf (_(" (Starting at file offset: 0x%lx)"),
2574 (unsigned long) (section
->filepos
+ start_offset
));
2577 data
= xmalloc (datasize
);
2579 bfd_get_section_contents (abfd
, section
, data
, 0, datasize
);
2583 bfd_sprintf_vma (abfd
, buf
, start_offset
+ section
->vma
);
2584 if (strlen (buf
) >= sizeof (buf
))
2588 while (buf
[count
] == '0' && buf
[count
+1] != '\0')
2590 count
= strlen (buf
) - count
;
2594 bfd_sprintf_vma (abfd
, buf
, stop_offset
+ section
->vma
- 1);
2595 if (strlen (buf
) >= sizeof (buf
))
2599 while (buf
[count
] == '0' && buf
[count
+1] != '\0')
2601 count
= strlen (buf
) - count
;
2605 for (addr_offset
= start_offset
;
2606 addr_offset
< stop_offset
; addr_offset
+= onaline
/ opb
)
2610 bfd_sprintf_vma (abfd
, buf
, (addr_offset
+ section
->vma
));
2611 count
= strlen (buf
);
2612 if ((size_t) count
>= sizeof (buf
))
2616 while (count
< width
)
2621 fputs (buf
+ count
- width
, stdout
);
2624 for (j
= addr_offset
* opb
;
2625 j
< addr_offset
* opb
+ onaline
; j
++)
2627 if (j
< stop_offset
* opb
)
2628 printf ("%02x", (unsigned) (data
[j
]));
2636 for (j
= addr_offset
* opb
;
2637 j
< addr_offset
* opb
+ onaline
; j
++)
2639 if (j
>= stop_offset
* opb
)
2642 printf ("%c", ISPRINT (data
[j
]) ? data
[j
] : '.');
2649 /* Actually display the various requested regions. */
2652 dump_data (bfd
*abfd
)
2654 bfd_map_over_sections (abfd
, dump_section
, NULL
);
2657 /* Should perhaps share code and display with nm? */
2660 dump_symbols (bfd
*abfd ATTRIBUTE_UNUSED
, bfd_boolean dynamic
)
2670 printf ("DYNAMIC SYMBOL TABLE:\n");
2676 printf ("SYMBOL TABLE:\n");
2680 printf (_("no symbols\n"));
2682 for (count
= 0; count
< max
; count
++)
2686 if (*current
== NULL
)
2687 printf (_("no information for symbol number %ld\n"), count
);
2689 else if ((cur_bfd
= bfd_asymbol_bfd (*current
)) == NULL
)
2690 printf (_("could not determine the type of symbol number %ld\n"),
2693 else if (process_section_p ((* current
)->section
)
2694 && (dump_special_syms
2695 || !bfd_is_target_special_symbol (cur_bfd
, *current
)))
2697 const char *name
= (*current
)->name
;
2699 if (do_demangle
&& name
!= NULL
&& *name
!= '\0')
2703 /* If we want to demangle the name, we demangle it
2704 here, and temporarily clobber it while calling
2705 bfd_print_symbol. FIXME: This is a gross hack. */
2706 alloc
= bfd_demangle (cur_bfd
, name
, DMGL_ANSI
| DMGL_PARAMS
);
2708 (*current
)->name
= alloc
;
2709 bfd_print_symbol (cur_bfd
, stdout
, *current
,
2710 bfd_print_symbol_all
);
2713 (*current
)->name
= name
;
2718 bfd_print_symbol (cur_bfd
, stdout
, *current
,
2719 bfd_print_symbol_all
);
2729 dump_reloc_set (bfd
*abfd
, asection
*sec
, arelent
**relpp
, long relcount
)
2732 char *last_filename
, *last_functionname
;
2733 unsigned int last_line
;
2735 /* Get column headers lined up reasonably. */
2743 bfd_sprintf_vma (abfd
, buf
, (bfd_vma
) -1);
2744 width
= strlen (buf
) - 7;
2746 printf ("OFFSET %*s TYPE %*s VALUE \n", width
, "", 12, "");
2749 last_filename
= NULL
;
2750 last_functionname
= NULL
;
2753 for (p
= relpp
; relcount
&& *p
!= NULL
; p
++, relcount
--)
2756 const char *filename
, *functionname
;
2758 const char *sym_name
;
2759 const char *section_name
;
2761 if (start_address
!= (bfd_vma
) -1
2762 && q
->address
< start_address
)
2764 if (stop_address
!= (bfd_vma
) -1
2765 && q
->address
> stop_address
)
2768 if (with_line_numbers
2770 && bfd_find_nearest_line (abfd
, sec
, syms
, q
->address
,
2771 &filename
, &functionname
, &line
))
2773 if (functionname
!= NULL
2774 && (last_functionname
== NULL
2775 || strcmp (functionname
, last_functionname
) != 0))
2777 printf ("%s():\n", functionname
);
2778 if (last_functionname
!= NULL
)
2779 free (last_functionname
);
2780 last_functionname
= xstrdup (functionname
);
2784 && (line
!= last_line
2785 || (filename
!= NULL
2786 && last_filename
!= NULL
2787 && strcmp (filename
, last_filename
) != 0)))
2789 printf ("%s:%u\n", filename
== NULL
? "???" : filename
, line
);
2791 if (last_filename
!= NULL
)
2792 free (last_filename
);
2793 if (filename
== NULL
)
2794 last_filename
= NULL
;
2796 last_filename
= xstrdup (filename
);
2800 if (q
->sym_ptr_ptr
&& *q
->sym_ptr_ptr
)
2802 sym_name
= (*(q
->sym_ptr_ptr
))->name
;
2803 section_name
= (*(q
->sym_ptr_ptr
))->section
->name
;
2808 section_name
= NULL
;
2811 bfd_printf_vma (abfd
, q
->address
);
2812 if (q
->howto
== NULL
)
2813 printf (" *unknown* ");
2814 else if (q
->howto
->name
)
2815 printf (" %-16s ", q
->howto
->name
);
2817 printf (" %-16d ", q
->howto
->type
);
2821 objdump_print_symname (abfd
, NULL
, *q
->sym_ptr_ptr
);
2825 if (section_name
== NULL
)
2826 section_name
= "*unknown*";
2827 printf ("[%s]", section_name
);
2833 bfd_printf_vma (abfd
, q
->addend
);
2841 dump_relocs_in_section (bfd
*abfd
,
2843 void *dummy ATTRIBUTE_UNUSED
)
2849 if ( bfd_is_abs_section (section
)
2850 || bfd_is_und_section (section
)
2851 || bfd_is_com_section (section
)
2852 || (! process_section_p (section
))
2853 || ((section
->flags
& SEC_RELOC
) == 0))
2856 relsize
= bfd_get_reloc_upper_bound (abfd
, section
);
2858 bfd_fatal (bfd_get_filename (abfd
));
2860 printf ("RELOCATION RECORDS FOR [%s]:", section
->name
);
2864 printf (" (none)\n\n");
2868 relpp
= xmalloc (relsize
);
2869 relcount
= bfd_canonicalize_reloc (abfd
, section
, relpp
, syms
);
2872 bfd_fatal (bfd_get_filename (abfd
));
2873 else if (relcount
== 0)
2874 printf (" (none)\n\n");
2878 dump_reloc_set (abfd
, section
, relpp
, relcount
);
2885 dump_relocs (bfd
*abfd
)
2887 bfd_map_over_sections (abfd
, dump_relocs_in_section
, NULL
);
2891 dump_dynamic_relocs (bfd
*abfd
)
2897 relsize
= bfd_get_dynamic_reloc_upper_bound (abfd
);
2899 bfd_fatal (bfd_get_filename (abfd
));
2901 printf ("DYNAMIC RELOCATION RECORDS");
2904 printf (" (none)\n\n");
2907 relpp
= xmalloc (relsize
);
2908 relcount
= bfd_canonicalize_dynamic_reloc (abfd
, relpp
, dynsyms
);
2911 bfd_fatal (bfd_get_filename (abfd
));
2912 else if (relcount
== 0)
2913 printf (" (none)\n\n");
2917 dump_reloc_set (abfd
, NULL
, relpp
, relcount
);
2924 /* Creates a table of paths, to search for source files. */
2927 add_include_path (const char *path
)
2931 include_path_count
++;
2932 include_paths
= xrealloc (include_paths
,
2933 include_path_count
* sizeof (*include_paths
));
2934 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2935 if (path
[1] == ':' && path
[2] == 0)
2936 path
= concat (path
, ".", (const char *) 0);
2938 include_paths
[include_path_count
- 1] = path
;
2942 adjust_addresses (bfd
*abfd ATTRIBUTE_UNUSED
,
2946 if ((section
->flags
& SEC_DEBUGGING
) == 0)
2948 bfd_boolean
*has_reloc_p
= (bfd_boolean
*) arg
;
2949 section
->vma
+= adjust_section_vma
;
2951 section
->lma
+= adjust_section_vma
;
2955 /* Dump selected contents of ABFD. */
2958 dump_bfd (bfd
*abfd
)
2960 /* If we are adjusting section VMA's, change them all now. Changing
2961 the BFD information is a hack. However, we must do it, or
2962 bfd_find_nearest_line will not do the right thing. */
2963 if (adjust_section_vma
!= 0)
2965 bfd_boolean has_reloc
= (abfd
->flags
& HAS_RELOC
);
2966 bfd_map_over_sections (abfd
, adjust_addresses
, &has_reloc
);
2969 if (! dump_debugging_tags
)
2970 printf (_("\n%s: file format %s\n"), bfd_get_filename (abfd
),
2973 print_arelt_descr (stdout
, abfd
, TRUE
);
2974 if (dump_file_header
)
2975 dump_bfd_header (abfd
);
2976 if (dump_private_headers
)
2977 dump_bfd_private_header (abfd
);
2978 if (! dump_debugging_tags
)
2980 if (dump_section_headers
)
2981 dump_headers (abfd
);
2987 || dump_dwarf_section_info
)
2988 syms
= slurp_symtab (abfd
);
2989 if (dump_dynamic_symtab
|| dump_dynamic_reloc_info
2990 || (disassemble
&& bfd_get_dynamic_symtab_upper_bound (abfd
) > 0))
2991 dynsyms
= slurp_dynamic_symtab (abfd
);
2994 synthcount
= bfd_get_synthetic_symtab (abfd
, symcount
, syms
,
2995 dynsymcount
, dynsyms
, &synthsyms
);
3001 dump_symbols (abfd
, FALSE
);
3002 if (dump_dynamic_symtab
)
3003 dump_symbols (abfd
, TRUE
);
3004 if (dump_dwarf_section_info
)
3006 if (dump_stab_section_info
)
3008 if (dump_reloc_info
&& ! disassemble
)
3010 if (dump_dynamic_reloc_info
&& ! disassemble
)
3011 dump_dynamic_relocs (abfd
);
3012 if (dump_section_contents
)
3015 disassemble_data (abfd
);
3021 dhandle
= read_debugging_info (abfd
, syms
, symcount
, TRUE
);
3022 if (dhandle
!= NULL
)
3024 if (!print_debugging_info (stdout
, dhandle
, abfd
, syms
,
3026 dump_debugging_tags
? TRUE
: FALSE
))
3028 non_fatal (_("%s: printing debugging information failed"),
3029 bfd_get_filename (abfd
));
3033 /* PR 6483: If there was no STABS or IEEE debug
3034 info in the file, try DWARF instead. */
3035 else if (! dump_dwarf_section_info
)
3065 display_bfd (bfd
*abfd
)
3069 if (bfd_check_format_matches (abfd
, bfd_object
, &matching
))
3075 if (bfd_get_error () == bfd_error_file_ambiguously_recognized
)
3077 nonfatal (bfd_get_filename (abfd
));
3078 list_matching_formats (matching
);
3083 if (bfd_get_error () != bfd_error_file_not_recognized
)
3085 nonfatal (bfd_get_filename (abfd
));
3089 if (bfd_check_format_matches (abfd
, bfd_core
, &matching
))
3095 nonfatal (bfd_get_filename (abfd
));
3097 if (bfd_get_error () == bfd_error_file_ambiguously_recognized
)
3099 list_matching_formats (matching
);
3105 display_file (char *filename
, char *target
)
3110 if (get_file_size (filename
) < 1)
3116 file
= bfd_openr (filename
, target
);
3119 nonfatal (filename
);
3123 /* If the file is an archive, process all of its elements. */
3124 if (bfd_check_format (file
, bfd_archive
))
3126 bfd
*last_arfile
= NULL
;
3128 printf (_("In archive %s:\n"), bfd_get_filename (file
));
3131 bfd_set_error (bfd_error_no_error
);
3133 arfile
= bfd_openr_next_archived_file (file
, arfile
);
3136 if (bfd_get_error () != bfd_error_no_more_archived_files
)
3137 nonfatal (bfd_get_filename (file
));
3141 display_bfd (arfile
);
3143 if (last_arfile
!= NULL
)
3144 bfd_close (last_arfile
);
3145 last_arfile
= arfile
;
3148 if (last_arfile
!= NULL
)
3149 bfd_close (last_arfile
);
3158 main (int argc
, char **argv
)
3161 char *target
= default_target
;
3162 bfd_boolean seenflag
= FALSE
;
3164 #if defined (HAVE_SETLOCALE)
3165 #if defined (HAVE_LC_MESSAGES)
3166 setlocale (LC_MESSAGES
, "");
3168 setlocale (LC_CTYPE
, "");
3171 bindtextdomain (PACKAGE
, LOCALEDIR
);
3172 textdomain (PACKAGE
);
3174 program_name
= *argv
;
3175 xmalloc_set_program_name (program_name
);
3177 START_PROGRESS (program_name
, 0);
3179 expandargv (&argc
, &argv
);
3182 set_default_bfd_target ();
3184 while ((c
= getopt_long (argc
, argv
,
3185 "pib:m:M:VvCdDlfFaHhrRtTxsSI:j:wE:zgeGW::",
3186 long_options
, (int *) 0))
3192 break; /* We've been given a long option. */
3197 if (disassembler_options
)
3198 /* Ignore potential memory leak for now. */
3199 disassembler_options
= concat (disassembler_options
, ",",
3200 optarg
, (const char *) NULL
);
3202 disassembler_options
= optarg
;
3205 if (only_used
== only_size
)
3208 only
= xrealloc (only
, only_size
* sizeof (char *));
3210 only
[only_used
++] = optarg
;
3213 display_file_offsets
= TRUE
;
3216 with_line_numbers
= TRUE
;
3225 enum demangling_styles style
;
3227 style
= cplus_demangle_name_to_style (optarg
);
3228 if (style
== unknown_demangling
)
3229 fatal (_("unknown demangling style `%s'"),
3232 cplus_demangle_set_style (style
);
3238 case OPTION_ADJUST_VMA
:
3239 adjust_section_vma
= parse_vma (optarg
, "--adjust-vma");
3241 case OPTION_START_ADDRESS
:
3242 start_address
= parse_vma (optarg
, "--start-address");
3243 if ((stop_address
!= (bfd_vma
) -1) && stop_address
<= start_address
)
3244 fatal (_("error: the start address should be before the end address"));
3246 case OPTION_STOP_ADDRESS
:
3247 stop_address
= parse_vma (optarg
, "--stop-address");
3248 if ((start_address
!= (bfd_vma
) -1) && stop_address
<= start_address
)
3249 fatal (_("error: the stop address should be after the start address"));
3253 prefix_length
= strlen (prefix
);
3254 /* Remove an unnecessary trailing '/' */
3255 while (IS_DIR_SEPARATOR (prefix
[prefix_length
- 1]))
3258 case OPTION_PREFIX_STRIP
:
3259 prefix_strip
= atoi (optarg
);
3260 if (prefix_strip
< 0)
3261 fatal (_("error: prefix strip must be non-negative"));
3263 case OPTION_INSN_WIDTH
:
3264 insn_width
= strtoul (optarg
, NULL
, 0);
3265 if (insn_width
<= 0)
3266 fatal (_("error: instruction width must be positive"));
3269 if (strcmp (optarg
, "B") == 0)
3270 endian
= BFD_ENDIAN_BIG
;
3271 else if (strcmp (optarg
, "L") == 0)
3272 endian
= BFD_ENDIAN_LITTLE
;
3275 non_fatal (_("unrecognized -E option"));
3280 if (strncmp (optarg
, "big", strlen (optarg
)) == 0)
3281 endian
= BFD_ENDIAN_BIG
;
3282 else if (strncmp (optarg
, "little", strlen (optarg
)) == 0)
3283 endian
= BFD_ENDIAN_LITTLE
;
3286 non_fatal (_("unrecognized --endian type `%s'"), optarg
);
3292 dump_file_header
= TRUE
;
3296 formats_info
= TRUE
;
3300 add_include_path (optarg
);
3303 dump_private_headers
= TRUE
;
3307 dump_private_headers
= TRUE
;
3309 dump_reloc_info
= TRUE
;
3310 dump_file_header
= TRUE
;
3311 dump_ar_hdrs
= TRUE
;
3312 dump_section_headers
= TRUE
;
3320 dump_dynamic_symtab
= TRUE
;
3328 disassemble_zeroes
= TRUE
;
3332 disassemble_all
= TRUE
;
3337 with_source_code
= TRUE
;
3346 dump_debugging_tags
= 1;
3351 dump_dwarf_section_info
= TRUE
;
3354 dwarf_select_sections_by_letters (optarg
);
3356 dwarf_select_sections_all ();
3359 dump_dwarf_section_info
= TRUE
;
3362 dwarf_select_sections_by_names (optarg
);
3364 dwarf_select_sections_all ();
3367 dump_stab_section_info
= TRUE
;
3371 dump_section_contents
= TRUE
;
3375 dump_reloc_info
= TRUE
;
3379 dump_dynamic_reloc_info
= TRUE
;
3383 dump_ar_hdrs
= TRUE
;
3387 dump_section_headers
= TRUE
;
3395 show_version
= TRUE
;
3405 print_version ("objdump");
3411 exit_status
= display_info ();
3415 display_file ("a.out", target
);
3417 for (; optind
< argc
;)
3418 display_file (argv
[optind
++], target
);
3421 END_PROGRESS (program_name
);