Document the GDB python directory.
[deliverable/binutils-gdb.git] / binutils / objdump.c
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.
5
6 This file is part of GNU Binutils.
7
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)
11 any later version.
12
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.
17
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. */
22
23
24 /* Objdump overview.
25
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.
30
31 The flow of execution is as follows:
32
33 1. Command line arguments are checked for control switches and the
34 information to be displayed is selected.
35
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.
39
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
42 called.
43
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.
47
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. */
52
53 #include "sysdep.h"
54 #include "bfd.h"
55 #include "elf-bfd.h"
56 #include "progress.h"
57 #include "bucomm.h"
58 #include "dwarf.h"
59 #include "getopt.h"
60 #include "safe-ctype.h"
61 #include "dis-asm.h"
62 #include "libiberty.h"
63 #include "demangle.h"
64 #include "filenames.h"
65 #include "debug.h"
66 #include "budbg.h"
67
68 #ifdef HAVE_MMAP
69 #include <sys/mman.h>
70 #endif
71
72 #include <sys/stat.h>
73
74 /* Internal headers for the ELF .stab-dump code - sorry. */
75 #define BYTES_IN_WORD 32
76 #include "aout/aout64.h"
77
78 /* Exit status. */
79 static int exit_status = 0;
80
81 static char *default_target = NULL; /* Default at runtime. */
82
83 /* The following variables are set based on arguments passed on the
84 command line. */
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;
119
120 /* A structure to record the sections mentioned in -j switches. */
121 struct only
122 {
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. */
126 };
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;
130
131 /* Variables for handling include file path table. */
132 static const char **include_paths;
133 static int include_path_count;
134
135 /* Extra info to pass to the section disassembler and address printing
136 function. */
137 struct objdump_disasm_info
138 {
139 bfd * abfd;
140 asection * sec;
141 bfd_boolean require_sec;
142 arelent ** dynrelbuf;
143 long dynrelcount;
144 disassembler_ftype disassemble_fn;
145 arelent * reloc;
146 };
147
148 /* Architecture to disassemble for, or default if NULL. */
149 static char *machine = NULL;
150
151 /* Target specific options to the disassembler. */
152 static char *disassembler_options = NULL;
153
154 /* Endianness to disassemble for, or default if BFD_ENDIAN_UNKNOWN. */
155 static enum bfd_endian endian = BFD_ENDIAN_UNKNOWN;
156
157 /* The symbol table. */
158 static asymbol **syms;
159
160 /* Number of symbols in `syms'. */
161 static long symcount = 0;
162
163 /* The sorted symbol table. */
164 static asymbol **sorted_syms;
165
166 /* Number of symbols in `sorted_syms'. */
167 static long sorted_symcount = 0;
168
169 /* The dynamic symbol table. */
170 static asymbol **dynsyms;
171
172 /* The synthetic symbol table. */
173 static asymbol *synthsyms;
174 static long synthcount = 0;
175
176 /* Number of symbols in `dynsyms'. */
177 static long dynsymcount = 0;
178
179 static bfd_byte *stabs;
180 static bfd_size_type stab_size;
181
182 static char *strtab;
183 static bfd_size_type stabstr_size;
184
185 static bfd_boolean is_relocatable = FALSE;
186 \f
187 static void
188 usage (FILE *stream, int status)
189 {
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\
219 "));
220 if (status != 2)
221 {
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\
237 or `gnat'\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\
249 \n"));
250 list_supported_targets (program_name, stream);
251 list_supported_architectures (program_name, stream);
252
253 disassembler_usage (stream);
254 }
255 if (REPORT_BUGS_TO[0] && status == 0)
256 fprintf (stream, _("Report bugs to %s.\n"), REPORT_BUGS_TO);
257 exit (status);
258 }
259
260 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
261 enum option_values
262 {
263 OPTION_ENDIAN=150,
264 OPTION_START_ADDRESS,
265 OPTION_STOP_ADDRESS,
266 OPTION_DWARF,
267 OPTION_PREFIX,
268 OPTION_PREFIX_STRIP,
269 OPTION_INSN_WIDTH,
270 OPTION_ADJUST_VMA
271 };
272
273 static struct option long_options[]=
274 {
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}
319 };
320 \f
321 static void
322 nonfatal (const char *msg)
323 {
324 bfd_nonfatal (msg);
325 exit_status = 1;
326 }
327 \f
328 /* Returns TRUE if the specified section should be dumped. */
329
330 static bfd_boolean
331 process_section_p (asection * section)
332 {
333 struct only * only;
334
335 if (only_list == NULL)
336 return TRUE;
337
338 for (only = only_list; only; only = only->next)
339 if (strcmp (only->name, section->name) == 0)
340 {
341 only->seen = TRUE;
342 return TRUE;
343 }
344
345 return FALSE;
346 }
347
348 /* Add an entry to the 'only' list. */
349
350 static void
351 add_only (char * name)
352 {
353 struct only * only;
354
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)
359 return;
360
361 only = xmalloc (sizeof * only);
362 only->name = name;
363 only->seen = FALSE;
364 only->next = only_list;
365 only_list = only;
366 }
367
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
373 formats. */
374
375 static void
376 free_only_list (void)
377 {
378 bfd_boolean at_least_one_seen = FALSE;
379 struct only * only;
380 struct only * next;
381
382 if (only_list == NULL)
383 return;
384
385 for (only = only_list; only; only = only->next)
386 if (only->seen)
387 {
388 at_least_one_seen = TRUE;
389 break;
390 }
391
392 for (only = only_list; only; only = next)
393 {
394 if (! at_least_one_seen)
395 {
396 non_fatal (_("Section '%s' mentioned in a -j option, but not found in any input file"),
397 only->name);
398 exit_status = 1;
399 }
400 next = only->next;
401 free (only);
402 }
403 }
404
405 \f
406 static void
407 dump_section_header (bfd *abfd, asection *section,
408 void *ignored ATTRIBUTE_UNUSED)
409 {
410 char *comma = "";
411 unsigned int opb = bfd_octets_per_byte (abfd);
412
413 /* Ignore linker created section. See elfNN_ia64_object_p in
414 bfd/elfxx-ia64.c. */
415 if (section->flags & SEC_LINKER_CREATED)
416 return;
417
418 /* PR 10413: Skip sections that we are ignoring. */
419 if (! process_section_p (section))
420 return;
421
422 printf ("%3d %-13s %08lx ", section->index,
423 bfd_get_section_name (abfd, section),
424 (unsigned long) bfd_section_size (abfd, section) / opb);
425 bfd_printf_vma (abfd, bfd_get_section_vma (abfd, section));
426 printf (" ");
427 bfd_printf_vma (abfd, section->lma);
428 printf (" %08lx 2**%u", (unsigned long) section->filepos,
429 bfd_get_section_alignment (abfd, section));
430 if (! wide_output)
431 printf ("\n ");
432 printf (" ");
433
434 #define PF(x, y) \
435 if (section->flags & x) { printf ("%s%s", comma, y); comma = ", "; }
436
437 PF (SEC_HAS_CONTENTS, "CONTENTS");
438 PF (SEC_ALLOC, "ALLOC");
439 PF (SEC_CONSTRUCTOR, "CONSTRUCTOR");
440 PF (SEC_LOAD, "LOAD");
441 PF (SEC_RELOC, "RELOC");
442 PF (SEC_READONLY, "READONLY");
443 PF (SEC_CODE, "CODE");
444 PF (SEC_DATA, "DATA");
445 PF (SEC_ROM, "ROM");
446 PF (SEC_DEBUGGING, "DEBUGGING");
447 PF (SEC_NEVER_LOAD, "NEVER_LOAD");
448 PF (SEC_EXCLUDE, "EXCLUDE");
449 PF (SEC_SORT_ENTRIES, "SORT_ENTRIES");
450 if (bfd_get_arch (abfd) == bfd_arch_tic54x)
451 {
452 PF (SEC_TIC54X_BLOCK, "BLOCK");
453 PF (SEC_TIC54X_CLINK, "CLINK");
454 }
455 PF (SEC_SMALL_DATA, "SMALL_DATA");
456 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
457 PF (SEC_COFF_SHARED, "SHARED");
458 PF (SEC_THREAD_LOCAL, "THREAD_LOCAL");
459 PF (SEC_GROUP, "GROUP");
460
461 if ((section->flags & SEC_LINK_ONCE) != 0)
462 {
463 const char *ls;
464 struct coff_comdat_info *comdat;
465
466 switch (section->flags & SEC_LINK_DUPLICATES)
467 {
468 default:
469 abort ();
470 case SEC_LINK_DUPLICATES_DISCARD:
471 ls = "LINK_ONCE_DISCARD";
472 break;
473 case SEC_LINK_DUPLICATES_ONE_ONLY:
474 ls = "LINK_ONCE_ONE_ONLY";
475 break;
476 case SEC_LINK_DUPLICATES_SAME_SIZE:
477 ls = "LINK_ONCE_SAME_SIZE";
478 break;
479 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
480 ls = "LINK_ONCE_SAME_CONTENTS";
481 break;
482 }
483 printf ("%s%s", comma, ls);
484
485 comdat = bfd_coff_get_comdat_section (abfd, section);
486 if (comdat != NULL)
487 printf (" (COMDAT %s %ld)", comdat->name, comdat->symbol);
488
489 comma = ", ";
490 }
491
492 printf ("\n");
493 #undef PF
494 }
495
496 static void
497 dump_headers (bfd *abfd)
498 {
499 printf (_("Sections:\n"));
500
501 #ifndef BFD64
502 printf (_("Idx Name Size VMA LMA File off Algn"));
503 #else
504 /* With BFD64, non-ELF returns -1 and wants always 64 bit addresses. */
505 if (bfd_get_arch_size (abfd) == 32)
506 printf (_("Idx Name Size VMA LMA File off Algn"));
507 else
508 printf (_("Idx Name Size VMA LMA File off Algn"));
509 #endif
510
511 if (wide_output)
512 printf (_(" Flags"));
513 if (abfd->flags & HAS_LOAD_PAGE)
514 printf (_(" Pg"));
515 printf ("\n");
516
517 bfd_map_over_sections (abfd, dump_section_header, NULL);
518 }
519 \f
520 static asymbol **
521 slurp_symtab (bfd *abfd)
522 {
523 asymbol **sy = NULL;
524 long storage;
525
526 if (!(bfd_get_file_flags (abfd) & HAS_SYMS))
527 {
528 symcount = 0;
529 return NULL;
530 }
531
532 storage = bfd_get_symtab_upper_bound (abfd);
533 if (storage < 0)
534 bfd_fatal (bfd_get_filename (abfd));
535 if (storage)
536 sy = (asymbol **) xmalloc (storage);
537
538 symcount = bfd_canonicalize_symtab (abfd, sy);
539 if (symcount < 0)
540 bfd_fatal (bfd_get_filename (abfd));
541 return sy;
542 }
543
544 /* Read in the dynamic symbols. */
545
546 static asymbol **
547 slurp_dynamic_symtab (bfd *abfd)
548 {
549 asymbol **sy = NULL;
550 long storage;
551
552 storage = bfd_get_dynamic_symtab_upper_bound (abfd);
553 if (storage < 0)
554 {
555 if (!(bfd_get_file_flags (abfd) & DYNAMIC))
556 {
557 non_fatal (_("%s: not a dynamic object"), bfd_get_filename (abfd));
558 dynsymcount = 0;
559 return NULL;
560 }
561
562 bfd_fatal (bfd_get_filename (abfd));
563 }
564 if (storage)
565 sy = (asymbol **) xmalloc (storage);
566
567 dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, sy);
568 if (dynsymcount < 0)
569 bfd_fatal (bfd_get_filename (abfd));
570 return sy;
571 }
572
573 /* Filter out (in place) symbols that are useless for disassembly.
574 COUNT is the number of elements in SYMBOLS.
575 Return the number of useful symbols. */
576
577 static long
578 remove_useless_symbols (asymbol **symbols, long count)
579 {
580 asymbol **in_ptr = symbols, **out_ptr = symbols;
581
582 while (--count >= 0)
583 {
584 asymbol *sym = *in_ptr++;
585
586 if (sym->name == NULL || sym->name[0] == '\0')
587 continue;
588 if (sym->flags & (BSF_DEBUGGING | BSF_SECTION_SYM))
589 continue;
590 if (bfd_is_und_section (sym->section)
591 || bfd_is_com_section (sym->section))
592 continue;
593
594 *out_ptr++ = sym;
595 }
596 return out_ptr - symbols;
597 }
598
599 /* Sort symbols into value order. */
600
601 static int
602 compare_symbols (const void *ap, const void *bp)
603 {
604 const asymbol *a = * (const asymbol **) ap;
605 const asymbol *b = * (const asymbol **) bp;
606 const char *an;
607 const char *bn;
608 size_t anl;
609 size_t bnl;
610 bfd_boolean af;
611 bfd_boolean bf;
612 flagword aflags;
613 flagword bflags;
614
615 if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
616 return 1;
617 else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
618 return -1;
619
620 if (a->section > b->section)
621 return 1;
622 else if (a->section < b->section)
623 return -1;
624
625 an = bfd_asymbol_name (a);
626 bn = bfd_asymbol_name (b);
627 anl = strlen (an);
628 bnl = strlen (bn);
629
630 /* The symbols gnu_compiled and gcc2_compiled convey no real
631 information, so put them after other symbols with the same value. */
632 af = (strstr (an, "gnu_compiled") != NULL
633 || strstr (an, "gcc2_compiled") != NULL);
634 bf = (strstr (bn, "gnu_compiled") != NULL
635 || strstr (bn, "gcc2_compiled") != NULL);
636
637 if (af && ! bf)
638 return 1;
639 if (! af && bf)
640 return -1;
641
642 /* We use a heuristic for the file name, to try to sort it after
643 more useful symbols. It may not work on non Unix systems, but it
644 doesn't really matter; the only difference is precisely which
645 symbol names get printed. */
646
647 #define file_symbol(s, sn, snl) \
648 (((s)->flags & BSF_FILE) != 0 \
649 || ((sn)[(snl) - 2] == '.' \
650 && ((sn)[(snl) - 1] == 'o' \
651 || (sn)[(snl) - 1] == 'a')))
652
653 af = file_symbol (a, an, anl);
654 bf = file_symbol (b, bn, bnl);
655
656 if (af && ! bf)
657 return 1;
658 if (! af && bf)
659 return -1;
660
661 /* Try to sort global symbols before local symbols before function
662 symbols before debugging symbols. */
663
664 aflags = a->flags;
665 bflags = b->flags;
666
667 if ((aflags & BSF_DEBUGGING) != (bflags & BSF_DEBUGGING))
668 {
669 if ((aflags & BSF_DEBUGGING) != 0)
670 return 1;
671 else
672 return -1;
673 }
674 if ((aflags & BSF_FUNCTION) != (bflags & BSF_FUNCTION))
675 {
676 if ((aflags & BSF_FUNCTION) != 0)
677 return -1;
678 else
679 return 1;
680 }
681 if ((aflags & BSF_LOCAL) != (bflags & BSF_LOCAL))
682 {
683 if ((aflags & BSF_LOCAL) != 0)
684 return 1;
685 else
686 return -1;
687 }
688 if ((aflags & BSF_GLOBAL) != (bflags & BSF_GLOBAL))
689 {
690 if ((aflags & BSF_GLOBAL) != 0)
691 return -1;
692 else
693 return 1;
694 }
695
696 /* Symbols that start with '.' might be section names, so sort them
697 after symbols that don't start with '.'. */
698 if (an[0] == '.' && bn[0] != '.')
699 return 1;
700 if (an[0] != '.' && bn[0] == '.')
701 return -1;
702
703 /* Finally, if we can't distinguish them in any other way, try to
704 get consistent results by sorting the symbols by name. */
705 return strcmp (an, bn);
706 }
707
708 /* Sort relocs into address order. */
709
710 static int
711 compare_relocs (const void *ap, const void *bp)
712 {
713 const arelent *a = * (const arelent **) ap;
714 const arelent *b = * (const arelent **) bp;
715
716 if (a->address > b->address)
717 return 1;
718 else if (a->address < b->address)
719 return -1;
720
721 /* So that associated relocations tied to the same address show up
722 in the correct order, we don't do any further sorting. */
723 if (a > b)
724 return 1;
725 else if (a < b)
726 return -1;
727 else
728 return 0;
729 }
730
731 /* Print an address (VMA) to the output stream in INFO.
732 If SKIP_ZEROES is TRUE, omit leading zeroes. */
733
734 static void
735 objdump_print_value (bfd_vma vma, struct disassemble_info *inf,
736 bfd_boolean skip_zeroes)
737 {
738 char buf[30];
739 char *p;
740 struct objdump_disasm_info *aux;
741
742 aux = (struct objdump_disasm_info *) inf->application_data;
743 bfd_sprintf_vma (aux->abfd, buf, vma);
744 if (! skip_zeroes)
745 p = buf;
746 else
747 {
748 for (p = buf; *p == '0'; ++p)
749 ;
750 if (*p == '\0')
751 --p;
752 }
753 (*inf->fprintf_func) (inf->stream, "%s", p);
754 }
755
756 /* Print the name of a symbol. */
757
758 static void
759 objdump_print_symname (bfd *abfd, struct disassemble_info *inf,
760 asymbol *sym)
761 {
762 char *alloc;
763 const char *name;
764
765 alloc = NULL;
766 name = bfd_asymbol_name (sym);
767 if (do_demangle && name[0] != '\0')
768 {
769 /* Demangle the name. */
770 alloc = bfd_demangle (abfd, name, DMGL_ANSI | DMGL_PARAMS);
771 if (alloc != NULL)
772 name = alloc;
773 }
774
775 if (inf != NULL)
776 (*inf->fprintf_func) (inf->stream, "%s", name);
777 else
778 printf ("%s", name);
779
780 if (alloc != NULL)
781 free (alloc);
782 }
783
784 /* Locate a symbol given a bfd and a section (from INFO->application_data),
785 and a VMA. If INFO->application_data->require_sec is TRUE, then always
786 require the symbol to be in the section. Returns NULL if there is no
787 suitable symbol. If PLACE is not NULL, then *PLACE is set to the index
788 of the symbol in sorted_syms. */
789
790 static asymbol *
791 find_symbol_for_address (bfd_vma vma,
792 struct disassemble_info *inf,
793 long *place)
794 {
795 /* @@ Would it speed things up to cache the last two symbols returned,
796 and maybe their address ranges? For many processors, only one memory
797 operand can be present at a time, so the 2-entry cache wouldn't be
798 constantly churned by code doing heavy memory accesses. */
799
800 /* Indices in `sorted_syms'. */
801 long min = 0;
802 long max_count = sorted_symcount;
803 long thisplace;
804 struct objdump_disasm_info *aux;
805 bfd *abfd;
806 asection *sec;
807 unsigned int opb;
808 bfd_boolean want_section;
809
810 if (sorted_symcount < 1)
811 return NULL;
812
813 aux = (struct objdump_disasm_info *) inf->application_data;
814 abfd = aux->abfd;
815 sec = aux->sec;
816 opb = inf->octets_per_byte;
817
818 /* Perform a binary search looking for the closest symbol to the
819 required value. We are searching the range (min, max_count]. */
820 while (min + 1 < max_count)
821 {
822 asymbol *sym;
823
824 thisplace = (max_count + min) / 2;
825 sym = sorted_syms[thisplace];
826
827 if (bfd_asymbol_value (sym) > vma)
828 max_count = thisplace;
829 else if (bfd_asymbol_value (sym) < vma)
830 min = thisplace;
831 else
832 {
833 min = thisplace;
834 break;
835 }
836 }
837
838 /* The symbol we want is now in min, the low end of the range we
839 were searching. If there are several symbols with the same
840 value, we want the first one. */
841 thisplace = min;
842 while (thisplace > 0
843 && (bfd_asymbol_value (sorted_syms[thisplace])
844 == bfd_asymbol_value (sorted_syms[thisplace - 1])))
845 --thisplace;
846
847 /* Prefer a symbol in the current section if we have multple symbols
848 with the same value, as can occur with overlays or zero size
849 sections. */
850 min = thisplace;
851 while (min < max_count
852 && (bfd_asymbol_value (sorted_syms[min])
853 == bfd_asymbol_value (sorted_syms[thisplace])))
854 {
855 if (sorted_syms[min]->section == sec
856 && inf->symbol_is_valid (sorted_syms[min], inf))
857 {
858 thisplace = min;
859
860 if (place != NULL)
861 *place = thisplace;
862
863 return sorted_syms[thisplace];
864 }
865 ++min;
866 }
867
868 /* If the file is relocatable, and the symbol could be from this
869 section, prefer a symbol from this section over symbols from
870 others, even if the other symbol's value might be closer.
871
872 Note that this may be wrong for some symbol references if the
873 sections have overlapping memory ranges, but in that case there's
874 no way to tell what's desired without looking at the relocation
875 table.
876
877 Also give the target a chance to reject symbols. */
878 want_section = (aux->require_sec
879 || ((abfd->flags & HAS_RELOC) != 0
880 && vma >= bfd_get_section_vma (abfd, sec)
881 && vma < (bfd_get_section_vma (abfd, sec)
882 + bfd_section_size (abfd, sec) / opb)));
883 if ((sorted_syms[thisplace]->section != sec && want_section)
884 || ! inf->symbol_is_valid (sorted_syms[thisplace], inf))
885 {
886 long i;
887 long newplace = sorted_symcount;
888
889 for (i = min - 1; i >= 0; i--)
890 {
891 if ((sorted_syms[i]->section == sec || !want_section)
892 && inf->symbol_is_valid (sorted_syms[i], inf))
893 {
894 if (newplace == sorted_symcount)
895 newplace = i;
896
897 if (bfd_asymbol_value (sorted_syms[i])
898 != bfd_asymbol_value (sorted_syms[newplace]))
899 break;
900
901 /* Remember this symbol and keep searching until we reach
902 an earlier address. */
903 newplace = i;
904 }
905 }
906
907 if (newplace != sorted_symcount)
908 thisplace = newplace;
909 else
910 {
911 /* We didn't find a good symbol with a smaller value.
912 Look for one with a larger value. */
913 for (i = thisplace + 1; i < sorted_symcount; i++)
914 {
915 if ((sorted_syms[i]->section == sec || !want_section)
916 && inf->symbol_is_valid (sorted_syms[i], inf))
917 {
918 thisplace = i;
919 break;
920 }
921 }
922 }
923
924 if ((sorted_syms[thisplace]->section != sec && want_section)
925 || ! inf->symbol_is_valid (sorted_syms[thisplace], inf))
926 /* There is no suitable symbol. */
927 return NULL;
928 }
929
930 if (place != NULL)
931 *place = thisplace;
932
933 return sorted_syms[thisplace];
934 }
935
936 /* Print an address and the offset to the nearest symbol. */
937
938 static void
939 objdump_print_addr_with_sym (bfd *abfd, asection *sec, asymbol *sym,
940 bfd_vma vma, struct disassemble_info *inf,
941 bfd_boolean skip_zeroes)
942 {
943 objdump_print_value (vma, inf, skip_zeroes);
944
945 if (sym == NULL)
946 {
947 bfd_vma secaddr;
948
949 (*inf->fprintf_func) (inf->stream, " <%s",
950 bfd_get_section_name (abfd, sec));
951 secaddr = bfd_get_section_vma (abfd, sec);
952 if (vma < secaddr)
953 {
954 (*inf->fprintf_func) (inf->stream, "-0x");
955 objdump_print_value (secaddr - vma, inf, TRUE);
956 }
957 else if (vma > secaddr)
958 {
959 (*inf->fprintf_func) (inf->stream, "+0x");
960 objdump_print_value (vma - secaddr, inf, TRUE);
961 }
962 (*inf->fprintf_func) (inf->stream, ">");
963 }
964 else
965 {
966 (*inf->fprintf_func) (inf->stream, " <");
967 objdump_print_symname (abfd, inf, sym);
968 if (bfd_asymbol_value (sym) > vma)
969 {
970 (*inf->fprintf_func) (inf->stream, "-0x");
971 objdump_print_value (bfd_asymbol_value (sym) - vma, inf, TRUE);
972 }
973 else if (vma > bfd_asymbol_value (sym))
974 {
975 (*inf->fprintf_func) (inf->stream, "+0x");
976 objdump_print_value (vma - bfd_asymbol_value (sym), inf, TRUE);
977 }
978 (*inf->fprintf_func) (inf->stream, ">");
979 }
980
981 if (display_file_offsets)
982 inf->fprintf_func (inf->stream, _(" (File Offset: 0x%lx)"),
983 (long int)(sec->filepos + (vma - sec->vma)));
984 }
985
986 /* Print an address (VMA), symbolically if possible.
987 If SKIP_ZEROES is TRUE, don't output leading zeroes. */
988
989 static void
990 objdump_print_addr (bfd_vma vma,
991 struct disassemble_info *inf,
992 bfd_boolean skip_zeroes)
993 {
994 struct objdump_disasm_info *aux;
995 asymbol *sym = NULL;
996 bfd_boolean skip_find = FALSE;
997
998 aux = (struct objdump_disasm_info *) inf->application_data;
999
1000 if (sorted_symcount < 1)
1001 {
1002 (*inf->fprintf_func) (inf->stream, "0x");
1003 objdump_print_value (vma, inf, skip_zeroes);
1004
1005 if (display_file_offsets)
1006 inf->fprintf_func (inf->stream, _(" (File Offset: 0x%lx)"),
1007 (long int)(aux->sec->filepos + (vma - aux->sec->vma)));
1008 return;
1009 }
1010
1011 if (aux->reloc != NULL
1012 && aux->reloc->sym_ptr_ptr != NULL
1013 && * aux->reloc->sym_ptr_ptr != NULL)
1014 {
1015 sym = * aux->reloc->sym_ptr_ptr;
1016
1017 /* Adjust the vma to the reloc. */
1018 vma += bfd_asymbol_value (sym);
1019
1020 if (bfd_is_und_section (bfd_get_section (sym)))
1021 skip_find = TRUE;
1022 }
1023
1024 if (!skip_find)
1025 sym = find_symbol_for_address (vma, inf, NULL);
1026
1027 objdump_print_addr_with_sym (aux->abfd, aux->sec, sym, vma, inf,
1028 skip_zeroes);
1029 }
1030
1031 /* Print VMA to INFO. This function is passed to the disassembler
1032 routine. */
1033
1034 static void
1035 objdump_print_address (bfd_vma vma, struct disassemble_info *inf)
1036 {
1037 objdump_print_addr (vma, inf, ! prefix_addresses);
1038 }
1039
1040 /* Determine if the given address has a symbol associated with it. */
1041
1042 static int
1043 objdump_symbol_at_address (bfd_vma vma, struct disassemble_info * inf)
1044 {
1045 asymbol * sym;
1046
1047 sym = find_symbol_for_address (vma, inf, NULL);
1048
1049 return (sym != NULL && (bfd_asymbol_value (sym) == vma));
1050 }
1051
1052 /* Hold the last function name and the last line number we displayed
1053 in a disassembly. */
1054
1055 static char *prev_functionname;
1056 static unsigned int prev_line;
1057
1058 /* We keep a list of all files that we have seen when doing a
1059 disassembly with source, so that we know how much of the file to
1060 display. This can be important for inlined functions. */
1061
1062 struct print_file_list
1063 {
1064 struct print_file_list *next;
1065 const char *filename;
1066 const char *modname;
1067 const char *map;
1068 size_t mapsize;
1069 const char **linemap;
1070 unsigned maxline;
1071 unsigned last_line;
1072 int first;
1073 };
1074
1075 static struct print_file_list *print_files;
1076
1077 /* The number of preceding context lines to show when we start
1078 displaying a file for the first time. */
1079
1080 #define SHOW_PRECEDING_CONTEXT_LINES (5)
1081
1082 /* Read a complete file into memory. */
1083
1084 static const char *
1085 slurp_file (const char *fn, size_t *size)
1086 {
1087 #ifdef HAVE_MMAP
1088 int ps = getpagesize ();
1089 size_t msize;
1090 #endif
1091 const char *map;
1092 struct stat st;
1093 int fd = open (fn, O_RDONLY | O_BINARY);
1094
1095 if (fd < 0)
1096 return NULL;
1097 if (fstat (fd, &st) < 0)
1098 return NULL;
1099 *size = st.st_size;
1100 #ifdef HAVE_MMAP
1101 msize = (*size + ps - 1) & ~(ps - 1);
1102 map = mmap (NULL, msize, PROT_READ, MAP_SHARED, fd, 0);
1103 if (map != (char *)-1L)
1104 {
1105 close(fd);
1106 return map;
1107 }
1108 #endif
1109 map = (const char *) malloc (*size);
1110 if (!map || (size_t) read (fd, (char *)map, *size) != *size)
1111 {
1112 free ((void *)map);
1113 map = NULL;
1114 }
1115 close (fd);
1116 return map;
1117 }
1118
1119 #define line_map_decrease 5
1120
1121 /* Precompute array of lines for a mapped file. */
1122
1123 static const char **
1124 index_file (const char *map, size_t size, unsigned int *maxline)
1125 {
1126 const char *p, *lstart, *end;
1127 int chars_per_line = 45; /* First iteration will use 40. */
1128 unsigned int lineno;
1129 const char **linemap = NULL;
1130 unsigned long line_map_size = 0;
1131
1132 lineno = 0;
1133 lstart = map;
1134 end = map + size;
1135
1136 for (p = map; p < end; p++)
1137 {
1138 if (*p == '\n')
1139 {
1140 if (p + 1 < end && p[1] == '\r')
1141 p++;
1142 }
1143 else if (*p == '\r')
1144 {
1145 if (p + 1 < end && p[1] == '\n')
1146 p++;
1147 }
1148 else
1149 continue;
1150
1151 /* End of line found. */
1152
1153 if (linemap == NULL || line_map_size < lineno + 1)
1154 {
1155 unsigned long newsize;
1156
1157 chars_per_line -= line_map_decrease;
1158 if (chars_per_line <= 1)
1159 chars_per_line = 1;
1160 line_map_size = size / chars_per_line + 1;
1161 if (line_map_size < lineno + 1)
1162 line_map_size = lineno + 1;
1163 newsize = line_map_size * sizeof (char *);
1164 linemap = (const char **) xrealloc (linemap, newsize);
1165 }
1166
1167 linemap[lineno++] = lstart;
1168 lstart = p + 1;
1169 }
1170
1171 *maxline = lineno;
1172 return linemap;
1173 }
1174
1175 /* Tries to open MODNAME, and if successful adds a node to print_files
1176 linked list and returns that node. Returns NULL on failure. */
1177
1178 static struct print_file_list *
1179 try_print_file_open (const char *origname, const char *modname)
1180 {
1181 struct print_file_list *p;
1182
1183 p = (struct print_file_list *) xmalloc (sizeof (struct print_file_list));
1184
1185 p->map = slurp_file (modname, &p->mapsize);
1186 if (p->map == NULL)
1187 {
1188 free (p);
1189 return NULL;
1190 }
1191
1192 p->linemap = index_file (p->map, p->mapsize, &p->maxline);
1193 p->last_line = 0;
1194 p->filename = origname;
1195 p->modname = modname;
1196 p->next = print_files;
1197 p->first = 1;
1198 print_files = p;
1199 return p;
1200 }
1201
1202 /* If the the source file, as described in the symtab, is not found
1203 try to locate it in one of the paths specified with -I
1204 If found, add location to print_files linked list. */
1205
1206 static struct print_file_list *
1207 update_source_path (const char *filename)
1208 {
1209 struct print_file_list *p;
1210 const char *fname;
1211 int i;
1212
1213 if (filename == NULL)
1214 return NULL;
1215
1216 p = try_print_file_open (filename, filename);
1217 if (p != NULL)
1218 return p;
1219
1220 if (include_path_count == 0)
1221 return NULL;
1222
1223 /* Get the name of the file. */
1224 fname = lbasename (filename);
1225
1226 /* If file exists under a new path, we need to add it to the list
1227 so that show_line knows about it. */
1228 for (i = 0; i < include_path_count; i++)
1229 {
1230 char *modname = concat (include_paths[i], "/", fname, (const char *) 0);
1231
1232 p = try_print_file_open (filename, modname);
1233 if (p)
1234 return p;
1235
1236 free (modname);
1237 }
1238
1239 return NULL;
1240 }
1241
1242 /* Print a source file line. */
1243
1244 static void
1245 print_line (struct print_file_list *p, unsigned int linenum)
1246 {
1247 const char *l;
1248 size_t len;
1249
1250 --linenum;
1251 if (linenum >= p->maxline)
1252 return;
1253 l = p->linemap [linenum];
1254 /* Test fwrite return value to quiet glibc warning. */
1255 len = strcspn (l, "\n\r");
1256 if (len == 0 || fwrite (l, len, 1, stdout) == 1)
1257 putchar ('\n');
1258 }
1259
1260 /* Print a range of source code lines. */
1261
1262 static void
1263 dump_lines (struct print_file_list *p, unsigned int start, unsigned int end)
1264 {
1265 if (p->map == NULL)
1266 return;
1267 while (start <= end)
1268 {
1269 print_line (p, start);
1270 start++;
1271 }
1272 }
1273
1274 /* Show the line number, or the source line, in a disassembly
1275 listing. */
1276
1277 static void
1278 show_line (bfd *abfd, asection *section, bfd_vma addr_offset)
1279 {
1280 const char *filename;
1281 const char *functionname;
1282 unsigned int linenumber;
1283 bfd_boolean reloc;
1284
1285 if (! with_line_numbers && ! with_source_code)
1286 return;
1287
1288 if (! bfd_find_nearest_line (abfd, section, syms, addr_offset, &filename,
1289 &functionname, &linenumber))
1290 return;
1291
1292 if (filename != NULL && *filename == '\0')
1293 filename = NULL;
1294 if (functionname != NULL && *functionname == '\0')
1295 functionname = NULL;
1296
1297 if (filename
1298 && IS_ABSOLUTE_PATH (filename)
1299 && prefix)
1300 {
1301 char *path_up;
1302 const char *fname = filename;
1303 char *path = (char *) alloca (prefix_length + PATH_MAX + 1);
1304
1305 if (prefix_length)
1306 memcpy (path, prefix, prefix_length);
1307 path_up = path + prefix_length;
1308
1309 /* Build relocated filename, stripping off leading directories
1310 from the initial filename if requested. */
1311 if (prefix_strip > 0)
1312 {
1313 int level = 0;
1314 const char *s;
1315
1316 /* Skip selected directory levels. */
1317 for (s = fname + 1; *s != '\0' && level < prefix_strip; s++)
1318 if (IS_DIR_SEPARATOR(*s))
1319 {
1320 fname = s;
1321 level++;
1322 }
1323 }
1324
1325 /* Update complete filename. */
1326 strncpy (path_up, fname, PATH_MAX);
1327 path_up[PATH_MAX] = '\0';
1328
1329 filename = path;
1330 reloc = TRUE;
1331 }
1332 else
1333 reloc = FALSE;
1334
1335 if (with_line_numbers)
1336 {
1337 if (functionname != NULL
1338 && (prev_functionname == NULL
1339 || strcmp (functionname, prev_functionname) != 0))
1340 printf ("%s():\n", functionname);
1341 if (linenumber > 0 && linenumber != prev_line)
1342 printf ("%s:%u\n", filename == NULL ? "???" : filename, linenumber);
1343 }
1344
1345 if (with_source_code
1346 && filename != NULL
1347 && linenumber > 0)
1348 {
1349 struct print_file_list **pp, *p;
1350 unsigned l;
1351
1352 for (pp = &print_files; *pp != NULL; pp = &(*pp)->next)
1353 if (strcmp ((*pp)->filename, filename) == 0)
1354 break;
1355 p = *pp;
1356
1357 if (p == NULL)
1358 {
1359 if (reloc)
1360 filename = xstrdup (filename);
1361 p = update_source_path (filename);
1362 }
1363
1364 if (p != NULL && linenumber != p->last_line)
1365 {
1366 if (file_start_context && p->first)
1367 l = 1;
1368 else
1369 {
1370 l = linenumber - SHOW_PRECEDING_CONTEXT_LINES;
1371 if (l >= linenumber)
1372 l = 1;
1373 if (p->last_line >= l && p->last_line <= linenumber)
1374 l = p->last_line + 1;
1375 }
1376 dump_lines (p, l, linenumber);
1377 p->last_line = linenumber;
1378 p->first = 0;
1379 }
1380 }
1381
1382 if (functionname != NULL
1383 && (prev_functionname == NULL
1384 || strcmp (functionname, prev_functionname) != 0))
1385 {
1386 if (prev_functionname != NULL)
1387 free (prev_functionname);
1388 prev_functionname = (char *) xmalloc (strlen (functionname) + 1);
1389 strcpy (prev_functionname, functionname);
1390 }
1391
1392 if (linenumber > 0 && linenumber != prev_line)
1393 prev_line = linenumber;
1394 }
1395
1396 /* Pseudo FILE object for strings. */
1397 typedef struct
1398 {
1399 char *buffer;
1400 size_t pos;
1401 size_t alloc;
1402 } SFILE;
1403
1404 /* sprintf to a "stream". */
1405
1406 static int ATTRIBUTE_PRINTF_2
1407 objdump_sprintf (SFILE *f, const char *format, ...)
1408 {
1409 size_t n;
1410 va_list args;
1411
1412 while (1)
1413 {
1414 size_t space = f->alloc - f->pos;
1415
1416 va_start (args, format);
1417 n = vsnprintf (f->buffer + f->pos, space, format, args);
1418 va_end (args);
1419
1420 if (space > n)
1421 break;
1422
1423 f->alloc = (f->alloc + n) * 2;
1424 f->buffer = (char *) xrealloc (f->buffer, f->alloc);
1425 }
1426 f->pos += n;
1427
1428 return n;
1429 }
1430
1431 /* The number of zeroes we want to see before we start skipping them.
1432 The number is arbitrarily chosen. */
1433
1434 #define DEFAULT_SKIP_ZEROES 8
1435
1436 /* The number of zeroes to skip at the end of a section. If the
1437 number of zeroes at the end is between SKIP_ZEROES_AT_END and
1438 SKIP_ZEROES, they will be disassembled. If there are fewer than
1439 SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic
1440 attempt to avoid disassembling zeroes inserted by section
1441 alignment. */
1442
1443 #define DEFAULT_SKIP_ZEROES_AT_END 3
1444
1445 /* Disassemble some data in memory between given values. */
1446
1447 static void
1448 disassemble_bytes (struct disassemble_info * inf,
1449 disassembler_ftype disassemble_fn,
1450 bfd_boolean insns,
1451 bfd_byte * data,
1452 bfd_vma start_offset,
1453 bfd_vma stop_offset,
1454 bfd_vma rel_offset,
1455 arelent *** relppp,
1456 arelent ** relppend)
1457 {
1458 struct objdump_disasm_info *aux;
1459 asection *section;
1460 int octets_per_line;
1461 int skip_addr_chars;
1462 bfd_vma addr_offset;
1463 unsigned int opb = inf->octets_per_byte;
1464 unsigned int skip_zeroes = inf->skip_zeroes;
1465 unsigned int skip_zeroes_at_end = inf->skip_zeroes_at_end;
1466 int octets = opb;
1467 SFILE sfile;
1468
1469 aux = (struct objdump_disasm_info *) inf->application_data;
1470 section = aux->sec;
1471
1472 sfile.alloc = 120;
1473 sfile.buffer = (char *) xmalloc (sfile.alloc);
1474 sfile.pos = 0;
1475
1476 if (insn_width)
1477 octets_per_line = insn_width;
1478 else if (insns)
1479 octets_per_line = 4;
1480 else
1481 octets_per_line = 16;
1482
1483 /* Figure out how many characters to skip at the start of an
1484 address, to make the disassembly look nicer. We discard leading
1485 zeroes in chunks of 4, ensuring that there is always a leading
1486 zero remaining. */
1487 skip_addr_chars = 0;
1488 if (! prefix_addresses)
1489 {
1490 char buf[30];
1491
1492 bfd_sprintf_vma (aux->abfd, buf, section->vma + section->size / opb);
1493
1494 while (buf[skip_addr_chars] == '0')
1495 ++skip_addr_chars;
1496
1497 /* Don't discard zeros on overflow. */
1498 if (buf[skip_addr_chars] == '\0' && section->vma != 0)
1499 skip_addr_chars = 0;
1500
1501 if (skip_addr_chars != 0)
1502 skip_addr_chars = (skip_addr_chars - 1) & -4;
1503 }
1504
1505 inf->insn_info_valid = 0;
1506
1507 addr_offset = start_offset;
1508 while (addr_offset < stop_offset)
1509 {
1510 bfd_vma z;
1511 bfd_boolean need_nl = FALSE;
1512 int previous_octets;
1513
1514 /* Remember the length of the previous instruction. */
1515 previous_octets = octets;
1516 octets = 0;
1517
1518 /* Make sure we don't use relocs from previous instructions. */
1519 aux->reloc = NULL;
1520
1521 /* If we see more than SKIP_ZEROES octets of zeroes, we just
1522 print `...'. */
1523 for (z = addr_offset * opb; z < stop_offset * opb; z++)
1524 if (data[z] != 0)
1525 break;
1526 if (! disassemble_zeroes
1527 && (inf->insn_info_valid == 0
1528 || inf->branch_delay_insns == 0)
1529 && (z - addr_offset * opb >= skip_zeroes
1530 || (z == stop_offset * opb &&
1531 z - addr_offset * opb < skip_zeroes_at_end)))
1532 {
1533 /* If there are more nonzero octets to follow, we only skip
1534 zeroes in multiples of 4, to try to avoid running over
1535 the start of an instruction which happens to start with
1536 zero. */
1537 if (z != stop_offset * opb)
1538 z = addr_offset * opb + ((z - addr_offset * opb) &~ 3);
1539
1540 octets = z - addr_offset * opb;
1541
1542 /* If we are going to display more data, and we are displaying
1543 file offsets, then tell the user how many zeroes we skip
1544 and the file offset from where we resume dumping. */
1545 if (display_file_offsets && ((addr_offset + (octets / opb)) < stop_offset))
1546 printf ("\t... (skipping %d zeroes, resuming at file offset: 0x%lx)\n",
1547 octets / opb,
1548 (unsigned long) (section->filepos
1549 + (addr_offset + (octets / opb))));
1550 else
1551 printf ("\t...\n");
1552 }
1553 else
1554 {
1555 char buf[50];
1556 int bpc = 0;
1557 int pb = 0;
1558
1559 if (with_line_numbers || with_source_code)
1560 show_line (aux->abfd, section, addr_offset);
1561
1562 if (! prefix_addresses)
1563 {
1564 char *s;
1565
1566 bfd_sprintf_vma (aux->abfd, buf, section->vma + addr_offset);
1567 for (s = buf + skip_addr_chars; *s == '0'; s++)
1568 *s = ' ';
1569 if (*s == '\0')
1570 *--s = '0';
1571 printf ("%s:\t", buf + skip_addr_chars);
1572 }
1573 else
1574 {
1575 aux->require_sec = TRUE;
1576 objdump_print_address (section->vma + addr_offset, inf);
1577 aux->require_sec = FALSE;
1578 putchar (' ');
1579 }
1580
1581 if (insns)
1582 {
1583 sfile.pos = 0;
1584 inf->fprintf_func = (fprintf_ftype) objdump_sprintf;
1585 inf->stream = &sfile;
1586 inf->bytes_per_line = 0;
1587 inf->bytes_per_chunk = 0;
1588 inf->flags = disassemble_all ? DISASSEMBLE_DATA : 0;
1589 if (machine)
1590 inf->flags |= USER_SPECIFIED_MACHINE_TYPE;
1591
1592 if (inf->disassembler_needs_relocs
1593 && (bfd_get_file_flags (aux->abfd) & EXEC_P) == 0
1594 && (bfd_get_file_flags (aux->abfd) & DYNAMIC) == 0
1595 && *relppp < relppend)
1596 {
1597 bfd_signed_vma distance_to_rel;
1598
1599 distance_to_rel = (**relppp)->address
1600 - (rel_offset + addr_offset);
1601
1602 /* Check to see if the current reloc is associated with
1603 the instruction that we are about to disassemble. */
1604 if (distance_to_rel == 0
1605 /* FIXME: This is wrong. We are trying to catch
1606 relocs that are addressed part way through the
1607 current instruction, as might happen with a packed
1608 VLIW instruction. Unfortunately we do not know the
1609 length of the current instruction since we have not
1610 disassembled it yet. Instead we take a guess based
1611 upon the length of the previous instruction. The
1612 proper solution is to have a new target-specific
1613 disassembler function which just returns the length
1614 of an instruction at a given address without trying
1615 to display its disassembly. */
1616 || (distance_to_rel > 0
1617 && distance_to_rel < (bfd_signed_vma) (previous_octets/ opb)))
1618 {
1619 inf->flags |= INSN_HAS_RELOC;
1620 aux->reloc = **relppp;
1621 }
1622 }
1623
1624 octets = (*disassemble_fn) (section->vma + addr_offset, inf);
1625 inf->fprintf_func = (fprintf_ftype) fprintf;
1626 inf->stream = stdout;
1627 if (insn_width == 0 && inf->bytes_per_line != 0)
1628 octets_per_line = inf->bytes_per_line;
1629 if (octets < 0)
1630 {
1631 if (sfile.pos)
1632 printf ("%s\n", sfile.buffer);
1633 break;
1634 }
1635 }
1636 else
1637 {
1638 bfd_vma j;
1639
1640 octets = octets_per_line;
1641 if (addr_offset + octets / opb > stop_offset)
1642 octets = (stop_offset - addr_offset) * opb;
1643
1644 for (j = addr_offset * opb; j < addr_offset * opb + octets; ++j)
1645 {
1646 if (ISPRINT (data[j]))
1647 buf[j - addr_offset * opb] = data[j];
1648 else
1649 buf[j - addr_offset * opb] = '.';
1650 }
1651 buf[j - addr_offset * opb] = '\0';
1652 }
1653
1654 if (prefix_addresses
1655 ? show_raw_insn > 0
1656 : show_raw_insn >= 0)
1657 {
1658 bfd_vma j;
1659
1660 /* If ! prefix_addresses and ! wide_output, we print
1661 octets_per_line octets per line. */
1662 pb = octets;
1663 if (pb > octets_per_line && ! prefix_addresses && ! wide_output)
1664 pb = octets_per_line;
1665
1666 if (inf->bytes_per_chunk)
1667 bpc = inf->bytes_per_chunk;
1668 else
1669 bpc = 1;
1670
1671 for (j = addr_offset * opb; j < addr_offset * opb + pb; j += bpc)
1672 {
1673 int k;
1674
1675 if (bpc > 1 && inf->display_endian == BFD_ENDIAN_LITTLE)
1676 {
1677 for (k = bpc - 1; k >= 0; k--)
1678 printf ("%02x", (unsigned) data[j + k]);
1679 putchar (' ');
1680 }
1681 else
1682 {
1683 for (k = 0; k < bpc; k++)
1684 printf ("%02x", (unsigned) data[j + k]);
1685 putchar (' ');
1686 }
1687 }
1688
1689 for (; pb < octets_per_line; pb += bpc)
1690 {
1691 int k;
1692
1693 for (k = 0; k < bpc; k++)
1694 printf (" ");
1695 putchar (' ');
1696 }
1697
1698 /* Separate raw data from instruction by extra space. */
1699 if (insns)
1700 putchar ('\t');
1701 else
1702 printf (" ");
1703 }
1704
1705 if (! insns)
1706 printf ("%s", buf);
1707 else if (sfile.pos)
1708 printf ("%s", sfile.buffer);
1709
1710 if (prefix_addresses
1711 ? show_raw_insn > 0
1712 : show_raw_insn >= 0)
1713 {
1714 while (pb < octets)
1715 {
1716 bfd_vma j;
1717 char *s;
1718
1719 putchar ('\n');
1720 j = addr_offset * opb + pb;
1721
1722 bfd_sprintf_vma (aux->abfd, buf, section->vma + j / opb);
1723 for (s = buf + skip_addr_chars; *s == '0'; s++)
1724 *s = ' ';
1725 if (*s == '\0')
1726 *--s = '0';
1727 printf ("%s:\t", buf + skip_addr_chars);
1728
1729 pb += octets_per_line;
1730 if (pb > octets)
1731 pb = octets;
1732 for (; j < addr_offset * opb + pb; j += bpc)
1733 {
1734 int k;
1735
1736 if (bpc > 1 && inf->display_endian == BFD_ENDIAN_LITTLE)
1737 {
1738 for (k = bpc - 1; k >= 0; k--)
1739 printf ("%02x", (unsigned) data[j + k]);
1740 putchar (' ');
1741 }
1742 else
1743 {
1744 for (k = 0; k < bpc; k++)
1745 printf ("%02x", (unsigned) data[j + k]);
1746 putchar (' ');
1747 }
1748 }
1749 }
1750 }
1751
1752 if (!wide_output)
1753 putchar ('\n');
1754 else
1755 need_nl = TRUE;
1756 }
1757
1758 while ((*relppp) < relppend
1759 && (**relppp)->address < rel_offset + addr_offset + octets / opb)
1760 {
1761 if (dump_reloc_info || dump_dynamic_reloc_info)
1762 {
1763 arelent *q;
1764
1765 q = **relppp;
1766
1767 if (wide_output)
1768 putchar ('\t');
1769 else
1770 printf ("\t\t\t");
1771
1772 objdump_print_value (section->vma - rel_offset + q->address,
1773 inf, TRUE);
1774
1775 if (q->howto == NULL)
1776 printf (": *unknown*\t");
1777 else if (q->howto->name)
1778 printf (": %s\t", q->howto->name);
1779 else
1780 printf (": %d\t", q->howto->type);
1781
1782 if (q->sym_ptr_ptr == NULL || *q->sym_ptr_ptr == NULL)
1783 printf ("*unknown*");
1784 else
1785 {
1786 const char *sym_name;
1787
1788 sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
1789 if (sym_name != NULL && *sym_name != '\0')
1790 objdump_print_symname (aux->abfd, inf, *q->sym_ptr_ptr);
1791 else
1792 {
1793 asection *sym_sec;
1794
1795 sym_sec = bfd_get_section (*q->sym_ptr_ptr);
1796 sym_name = bfd_get_section_name (aux->abfd, sym_sec);
1797 if (sym_name == NULL || *sym_name == '\0')
1798 sym_name = "*unknown*";
1799 printf ("%s", sym_name);
1800 }
1801 }
1802
1803 if (q->addend)
1804 {
1805 printf ("+0x");
1806 objdump_print_value (q->addend, inf, TRUE);
1807 }
1808
1809 printf ("\n");
1810 need_nl = FALSE;
1811 }
1812 ++(*relppp);
1813 }
1814
1815 if (need_nl)
1816 printf ("\n");
1817
1818 addr_offset += octets / opb;
1819 }
1820
1821 free (sfile.buffer);
1822 }
1823
1824 static void
1825 disassemble_section (bfd *abfd, asection *section, void *inf)
1826 {
1827 const struct elf_backend_data * bed;
1828 bfd_vma sign_adjust = 0;
1829 struct disassemble_info * pinfo = (struct disassemble_info *) inf;
1830 struct objdump_disasm_info * paux;
1831 unsigned int opb = pinfo->octets_per_byte;
1832 bfd_byte * data = NULL;
1833 bfd_size_type datasize = 0;
1834 arelent ** rel_pp = NULL;
1835 arelent ** rel_ppstart = NULL;
1836 arelent ** rel_ppend;
1837 unsigned long stop_offset;
1838 asymbol * sym = NULL;
1839 long place = 0;
1840 long rel_count;
1841 bfd_vma rel_offset;
1842 unsigned long addr_offset;
1843
1844 /* Sections that do not contain machine
1845 code are not normally disassembled. */
1846 if (! disassemble_all
1847 && only_list == NULL
1848 && ((section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
1849 != (SEC_CODE | SEC_HAS_CONTENTS)))
1850 return;
1851
1852 if (! process_section_p (section))
1853 return;
1854
1855 datasize = bfd_get_section_size (section);
1856 if (datasize == 0)
1857 return;
1858
1859 /* Decide which set of relocs to use. Load them if necessary. */
1860 paux = (struct objdump_disasm_info *) pinfo->application_data;
1861 if (paux->dynrelbuf)
1862 {
1863 rel_pp = paux->dynrelbuf;
1864 rel_count = paux->dynrelcount;
1865 /* Dynamic reloc addresses are absolute, non-dynamic are section
1866 relative. REL_OFFSET specifies the reloc address corresponding
1867 to the start of this section. */
1868 rel_offset = section->vma;
1869 }
1870 else
1871 {
1872 rel_count = 0;
1873 rel_pp = NULL;
1874 rel_offset = 0;
1875
1876 if ((section->flags & SEC_RELOC) != 0
1877 && (dump_reloc_info || pinfo->disassembler_needs_relocs))
1878 {
1879 long relsize;
1880
1881 relsize = bfd_get_reloc_upper_bound (abfd, section);
1882 if (relsize < 0)
1883 bfd_fatal (bfd_get_filename (abfd));
1884
1885 if (relsize > 0)
1886 {
1887 rel_ppstart = rel_pp = (arelent **) xmalloc (relsize);
1888 rel_count = bfd_canonicalize_reloc (abfd, section, rel_pp, syms);
1889 if (rel_count < 0)
1890 bfd_fatal (bfd_get_filename (abfd));
1891
1892 /* Sort the relocs by address. */
1893 qsort (rel_pp, rel_count, sizeof (arelent *), compare_relocs);
1894 }
1895 }
1896 }
1897 rel_ppend = rel_pp + rel_count;
1898
1899 data = (bfd_byte *) xmalloc (datasize);
1900
1901 bfd_get_section_contents (abfd, section, data, 0, datasize);
1902
1903 paux->sec = section;
1904 pinfo->buffer = data;
1905 pinfo->buffer_vma = section->vma;
1906 pinfo->buffer_length = datasize;
1907 pinfo->section = section;
1908
1909 if (start_address == (bfd_vma) -1
1910 || start_address < pinfo->buffer_vma)
1911 addr_offset = 0;
1912 else
1913 addr_offset = start_address - pinfo->buffer_vma;
1914
1915 if (stop_address == (bfd_vma) -1)
1916 stop_offset = datasize / opb;
1917 else
1918 {
1919 if (stop_address < pinfo->buffer_vma)
1920 stop_offset = 0;
1921 else
1922 stop_offset = stop_address - pinfo->buffer_vma;
1923 if (stop_offset > pinfo->buffer_length / opb)
1924 stop_offset = pinfo->buffer_length / opb;
1925 }
1926
1927 /* Skip over the relocs belonging to addresses below the
1928 start address. */
1929 while (rel_pp < rel_ppend
1930 && (*rel_pp)->address < rel_offset + addr_offset)
1931 ++rel_pp;
1932
1933 if (addr_offset < stop_offset)
1934 printf (_("\nDisassembly of section %s:\n"), section->name);
1935
1936 /* Find the nearest symbol forwards from our current position. */
1937 paux->require_sec = TRUE;
1938 sym = (asymbol *) find_symbol_for_address (section->vma + addr_offset,
1939 (struct disassemble_info *) inf,
1940 &place);
1941 paux->require_sec = FALSE;
1942
1943 /* PR 9774: If the target used signed addresses then we must make
1944 sure that we sign extend the value that we calculate for 'addr'
1945 in the loop below. */
1946 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
1947 && (bed = get_elf_backend_data (abfd)) != NULL
1948 && bed->sign_extend_vma)
1949 sign_adjust = (bfd_vma) 1 << (bed->s->arch_size - 1);
1950
1951 /* Disassemble a block of instructions up to the address associated with
1952 the symbol we have just found. Then print the symbol and find the
1953 next symbol on. Repeat until we have disassembled the entire section
1954 or we have reached the end of the address range we are interested in. */
1955 while (addr_offset < stop_offset)
1956 {
1957 bfd_vma addr;
1958 asymbol *nextsym;
1959 unsigned long nextstop_offset;
1960 bfd_boolean insns;
1961
1962 addr = section->vma + addr_offset;
1963 addr = ((addr & ((sign_adjust << 1) - 1)) ^ sign_adjust) - sign_adjust;
1964
1965 if (sym != NULL && bfd_asymbol_value (sym) <= addr)
1966 {
1967 int x;
1968
1969 for (x = place;
1970 (x < sorted_symcount
1971 && (bfd_asymbol_value (sorted_syms[x]) <= addr));
1972 ++x)
1973 continue;
1974
1975 pinfo->symbols = sorted_syms + place;
1976 pinfo->num_symbols = x - place;
1977 pinfo->symtab_pos = place;
1978 }
1979 else
1980 {
1981 pinfo->symbols = NULL;
1982 pinfo->num_symbols = 0;
1983 pinfo->symtab_pos = -1;
1984 }
1985
1986 if (! prefix_addresses)
1987 {
1988 pinfo->fprintf_func (pinfo->stream, "\n");
1989 objdump_print_addr_with_sym (abfd, section, sym, addr,
1990 pinfo, FALSE);
1991 pinfo->fprintf_func (pinfo->stream, ":\n");
1992 }
1993
1994 if (sym != NULL && bfd_asymbol_value (sym) > addr)
1995 nextsym = sym;
1996 else if (sym == NULL)
1997 nextsym = NULL;
1998 else
1999 {
2000 #define is_valid_next_sym(SYM) \
2001 ((SYM)->section == section \
2002 && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
2003 && pinfo->symbol_is_valid (SYM, pinfo))
2004
2005 /* Search forward for the next appropriate symbol in
2006 SECTION. Note that all the symbols are sorted
2007 together into one big array, and that some sections
2008 may have overlapping addresses. */
2009 while (place < sorted_symcount
2010 && ! is_valid_next_sym (sorted_syms [place]))
2011 ++place;
2012
2013 if (place >= sorted_symcount)
2014 nextsym = NULL;
2015 else
2016 nextsym = sorted_syms[place];
2017 }
2018
2019 if (sym != NULL && bfd_asymbol_value (sym) > addr)
2020 nextstop_offset = bfd_asymbol_value (sym) - section->vma;
2021 else if (nextsym == NULL)
2022 nextstop_offset = stop_offset;
2023 else
2024 nextstop_offset = bfd_asymbol_value (nextsym) - section->vma;
2025
2026 if (nextstop_offset > stop_offset
2027 || nextstop_offset <= addr_offset)
2028 nextstop_offset = stop_offset;
2029
2030 /* If a symbol is explicitly marked as being an object
2031 rather than a function, just dump the bytes without
2032 disassembling them. */
2033 if (disassemble_all
2034 || sym == NULL
2035 || sym->section != section
2036 || bfd_asymbol_value (sym) > addr
2037 || ((sym->flags & BSF_OBJECT) == 0
2038 && (strstr (bfd_asymbol_name (sym), "gnu_compiled")
2039 == NULL)
2040 && (strstr (bfd_asymbol_name (sym), "gcc2_compiled")
2041 == NULL))
2042 || (sym->flags & BSF_FUNCTION) != 0)
2043 insns = TRUE;
2044 else
2045 insns = FALSE;
2046
2047 disassemble_bytes (pinfo, paux->disassemble_fn, insns, data,
2048 addr_offset, nextstop_offset,
2049 rel_offset, &rel_pp, rel_ppend);
2050
2051 addr_offset = nextstop_offset;
2052 sym = nextsym;
2053 }
2054
2055 free (data);
2056
2057 if (rel_ppstart != NULL)
2058 free (rel_ppstart);
2059 }
2060
2061 /* Disassemble the contents of an object file. */
2062
2063 static void
2064 disassemble_data (bfd *abfd)
2065 {
2066 struct disassemble_info disasm_info;
2067 struct objdump_disasm_info aux;
2068 long i;
2069
2070 print_files = NULL;
2071 prev_functionname = NULL;
2072 prev_line = -1;
2073
2074 /* We make a copy of syms to sort. We don't want to sort syms
2075 because that will screw up the relocs. */
2076 sorted_symcount = symcount ? symcount : dynsymcount;
2077 sorted_syms = (asymbol **) xmalloc ((sorted_symcount + synthcount)
2078 * sizeof (asymbol *));
2079 memcpy (sorted_syms, symcount ? syms : dynsyms,
2080 sorted_symcount * sizeof (asymbol *));
2081
2082 sorted_symcount = remove_useless_symbols (sorted_syms, sorted_symcount);
2083
2084 for (i = 0; i < synthcount; ++i)
2085 {
2086 sorted_syms[sorted_symcount] = synthsyms + i;
2087 ++sorted_symcount;
2088 }
2089
2090 /* Sort the symbols into section and symbol order. */
2091 qsort (sorted_syms, sorted_symcount, sizeof (asymbol *), compare_symbols);
2092
2093 init_disassemble_info (&disasm_info, stdout, (fprintf_ftype) fprintf);
2094
2095 disasm_info.application_data = (void *) &aux;
2096 aux.abfd = abfd;
2097 aux.require_sec = FALSE;
2098 aux.dynrelbuf = NULL;
2099 aux.dynrelcount = 0;
2100 aux.reloc = NULL;
2101
2102 disasm_info.print_address_func = objdump_print_address;
2103 disasm_info.symbol_at_address_func = objdump_symbol_at_address;
2104
2105 if (machine != NULL)
2106 {
2107 const bfd_arch_info_type *inf = bfd_scan_arch (machine);
2108
2109 if (inf == NULL)
2110 fatal (_("Can't use supplied machine %s"), machine);
2111
2112 abfd->arch_info = inf;
2113 }
2114
2115 if (endian != BFD_ENDIAN_UNKNOWN)
2116 {
2117 struct bfd_target *xvec;
2118
2119 xvec = (struct bfd_target *) xmalloc (sizeof (struct bfd_target));
2120 memcpy (xvec, abfd->xvec, sizeof (struct bfd_target));
2121 xvec->byteorder = endian;
2122 abfd->xvec = xvec;
2123 }
2124
2125 /* Use libopcodes to locate a suitable disassembler. */
2126 aux.disassemble_fn = disassembler (abfd);
2127 if (!aux.disassemble_fn)
2128 {
2129 non_fatal (_("Can't disassemble for architecture %s\n"),
2130 bfd_printable_arch_mach (bfd_get_arch (abfd), 0));
2131 exit_status = 1;
2132 return;
2133 }
2134
2135 disasm_info.flavour = bfd_get_flavour (abfd);
2136 disasm_info.arch = bfd_get_arch (abfd);
2137 disasm_info.mach = bfd_get_mach (abfd);
2138 disasm_info.disassembler_options = disassembler_options;
2139 disasm_info.octets_per_byte = bfd_octets_per_byte (abfd);
2140 disasm_info.skip_zeroes = DEFAULT_SKIP_ZEROES;
2141 disasm_info.skip_zeroes_at_end = DEFAULT_SKIP_ZEROES_AT_END;
2142 disasm_info.disassembler_needs_relocs = FALSE;
2143
2144 if (bfd_big_endian (abfd))
2145 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_BIG;
2146 else if (bfd_little_endian (abfd))
2147 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_LITTLE;
2148 else
2149 /* ??? Aborting here seems too drastic. We could default to big or little
2150 instead. */
2151 disasm_info.endian = BFD_ENDIAN_UNKNOWN;
2152
2153 /* Allow the target to customize the info structure. */
2154 disassemble_init_for_target (& disasm_info);
2155
2156 /* Pre-load the dynamic relocs if we are going
2157 to be dumping them along with the disassembly. */
2158 if (dump_dynamic_reloc_info)
2159 {
2160 long relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2161
2162 if (relsize < 0)
2163 bfd_fatal (bfd_get_filename (abfd));
2164
2165 if (relsize > 0)
2166 {
2167 aux.dynrelbuf = (arelent **) xmalloc (relsize);
2168 aux.dynrelcount = bfd_canonicalize_dynamic_reloc (abfd,
2169 aux.dynrelbuf,
2170 dynsyms);
2171 if (aux.dynrelcount < 0)
2172 bfd_fatal (bfd_get_filename (abfd));
2173
2174 /* Sort the relocs by address. */
2175 qsort (aux.dynrelbuf, aux.dynrelcount, sizeof (arelent *),
2176 compare_relocs);
2177 }
2178 }
2179 disasm_info.symtab = sorted_syms;
2180 disasm_info.symtab_size = sorted_symcount;
2181
2182 bfd_map_over_sections (abfd, disassemble_section, & disasm_info);
2183
2184 if (aux.dynrelbuf != NULL)
2185 free (aux.dynrelbuf);
2186 free (sorted_syms);
2187 }
2188 \f
2189 static int
2190 load_specific_debug_section (enum dwarf_section_display_enum debug,
2191 asection *sec, void *file)
2192 {
2193 struct dwarf_section *section = &debug_displays [debug].section;
2194 bfd *abfd = (bfd *) file;
2195 bfd_boolean ret;
2196 int section_is_compressed;
2197
2198 /* If it is already loaded, do nothing. */
2199 if (section->start != NULL)
2200 return 1;
2201
2202 section_is_compressed = section->name == section->compressed_name;
2203
2204 section->address = 0;
2205 section->size = bfd_get_section_size (sec);
2206 section->start = (unsigned char *) xmalloc (section->size);
2207
2208 if (is_relocatable && debug_displays [debug].relocate)
2209 ret = bfd_simple_get_relocated_section_contents (abfd,
2210 sec,
2211 section->start,
2212 syms) != NULL;
2213 else
2214 ret = bfd_get_section_contents (abfd, sec, section->start, 0,
2215 section->size);
2216
2217 if (! ret)
2218 {
2219 free_debug_section (debug);
2220 printf (_("\nCan't get contents for section '%s'.\n"),
2221 section->name);
2222 return 0;
2223 }
2224
2225 if (section_is_compressed)
2226 {
2227 bfd_size_type size = section->size;
2228 if (! bfd_uncompress_section_contents (&section->start, &size))
2229 {
2230 free_debug_section (debug);
2231 printf (_("\nCan't uncompress section '%s'.\n"), section->name);
2232 return 0;
2233 }
2234 section->size = size;
2235 }
2236
2237 return 1;
2238 }
2239
2240 int
2241 load_debug_section (enum dwarf_section_display_enum debug, void *file)
2242 {
2243 struct dwarf_section *section = &debug_displays [debug].section;
2244 bfd *abfd = (bfd *) file;
2245 asection *sec;
2246
2247 /* If it is already loaded, do nothing. */
2248 if (section->start != NULL)
2249 return 1;
2250
2251 /* Locate the debug section. */
2252 sec = bfd_get_section_by_name (abfd, section->uncompressed_name);
2253 if (sec != NULL)
2254 section->name = section->uncompressed_name;
2255 else
2256 {
2257 sec = bfd_get_section_by_name (abfd, section->compressed_name);
2258 if (sec != NULL)
2259 section->name = section->compressed_name;
2260 }
2261 if (sec == NULL)
2262 return 0;
2263
2264 return load_specific_debug_section (debug, sec, file);
2265 }
2266
2267 void
2268 free_debug_section (enum dwarf_section_display_enum debug)
2269 {
2270 struct dwarf_section *section = &debug_displays [debug].section;
2271
2272 if (section->start == NULL)
2273 return;
2274
2275 free ((char *) section->start);
2276 section->start = NULL;
2277 section->address = 0;
2278 section->size = 0;
2279 }
2280
2281 static void
2282 dump_dwarf_section (bfd *abfd, asection *section,
2283 void *arg ATTRIBUTE_UNUSED)
2284 {
2285 const char *name = bfd_get_section_name (abfd, section);
2286 const char *match;
2287 int i;
2288
2289 if (CONST_STRNEQ (name, ".gnu.linkonce.wi."))
2290 match = ".debug_info";
2291 else
2292 match = name;
2293
2294 for (i = 0; i < max; i++)
2295 if ((strcmp (debug_displays [i].section.uncompressed_name, match) == 0
2296 || strcmp (debug_displays [i].section.compressed_name, match) == 0)
2297 && debug_displays [i].enabled != NULL
2298 && *debug_displays [i].enabled)
2299 {
2300 struct dwarf_section *sec = &debug_displays [i].section;
2301
2302 if (strcmp (sec->uncompressed_name, match) == 0)
2303 sec->name = sec->uncompressed_name;
2304 else
2305 sec->name = sec->compressed_name;
2306 if (load_specific_debug_section ((enum dwarf_section_display_enum) i,
2307 section, abfd))
2308 {
2309 debug_displays [i].display (sec, abfd);
2310
2311 if (i != info && i != abbrev)
2312 free_debug_section ((enum dwarf_section_display_enum) i);
2313 }
2314 break;
2315 }
2316 }
2317
2318 /* Dump the dwarf debugging information. */
2319
2320 static void
2321 dump_dwarf (bfd *abfd)
2322 {
2323 is_relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2324
2325 /* FIXME: bfd_get_arch_size may return -1. We assume that 64bit
2326 targets will return 64. */
2327 eh_addr_size = bfd_get_arch_size (abfd) == 64 ? 8 : 4;
2328
2329 if (bfd_big_endian (abfd))
2330 byte_get = byte_get_big_endian;
2331 else if (bfd_little_endian (abfd))
2332 byte_get = byte_get_little_endian;
2333 else
2334 abort ();
2335
2336 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
2337 {
2338 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2339 init_dwarf_regnames (bed->elf_machine_code);
2340 }
2341
2342 bfd_map_over_sections (abfd, dump_dwarf_section, NULL);
2343
2344 free_debug_memory ();
2345 }
2346 \f
2347 /* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
2348 it. Return NULL on failure. */
2349
2350 static char *
2351 read_section_stabs (bfd *abfd, const char *sect_name, bfd_size_type *size_ptr)
2352 {
2353 asection *stabsect;
2354 bfd_size_type size;
2355 char *contents;
2356
2357 stabsect = bfd_get_section_by_name (abfd, sect_name);
2358 if (stabsect == NULL)
2359 {
2360 printf (_("No %s section present\n\n"), sect_name);
2361 return FALSE;
2362 }
2363
2364 size = bfd_section_size (abfd, stabsect);
2365 contents = (char *) xmalloc (size);
2366
2367 if (! bfd_get_section_contents (abfd, stabsect, contents, 0, size))
2368 {
2369 non_fatal (_("Reading %s section of %s failed: %s"),
2370 sect_name, bfd_get_filename (abfd),
2371 bfd_errmsg (bfd_get_error ()));
2372 free (contents);
2373 exit_status = 1;
2374 return NULL;
2375 }
2376
2377 *size_ptr = size;
2378
2379 return contents;
2380 }
2381
2382 /* Stabs entries use a 12 byte format:
2383 4 byte string table index
2384 1 byte stab type
2385 1 byte stab other field
2386 2 byte stab desc field
2387 4 byte stab value
2388 FIXME: This will have to change for a 64 bit object format. */
2389
2390 #define STRDXOFF (0)
2391 #define TYPEOFF (4)
2392 #define OTHEROFF (5)
2393 #define DESCOFF (6)
2394 #define VALOFF (8)
2395 #define STABSIZE (12)
2396
2397 /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
2398 using string table section STRSECT_NAME (in `strtab'). */
2399
2400 static void
2401 print_section_stabs (bfd *abfd,
2402 const char *stabsect_name,
2403 unsigned *string_offset_ptr)
2404 {
2405 int i;
2406 unsigned file_string_table_offset = 0;
2407 unsigned next_file_string_table_offset = *string_offset_ptr;
2408 bfd_byte *stabp, *stabs_end;
2409
2410 stabp = stabs;
2411 stabs_end = stabp + stab_size;
2412
2413 printf (_("Contents of %s section:\n\n"), stabsect_name);
2414 printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
2415
2416 /* Loop through all symbols and print them.
2417
2418 We start the index at -1 because there is a dummy symbol on
2419 the front of stabs-in-{coff,elf} sections that supplies sizes. */
2420 for (i = -1; stabp < stabs_end; stabp += STABSIZE, i++)
2421 {
2422 const char *name;
2423 unsigned long strx;
2424 unsigned char type, other;
2425 unsigned short desc;
2426 bfd_vma value;
2427
2428 strx = bfd_h_get_32 (abfd, stabp + STRDXOFF);
2429 type = bfd_h_get_8 (abfd, stabp + TYPEOFF);
2430 other = bfd_h_get_8 (abfd, stabp + OTHEROFF);
2431 desc = bfd_h_get_16 (abfd, stabp + DESCOFF);
2432 value = bfd_h_get_32 (abfd, stabp + VALOFF);
2433
2434 printf ("\n%-6d ", i);
2435 /* Either print the stab name, or, if unnamed, print its number
2436 again (makes consistent formatting for tools like awk). */
2437 name = bfd_get_stab_name (type);
2438 if (name != NULL)
2439 printf ("%-6s", name);
2440 else if (type == N_UNDF)
2441 printf ("HdrSym");
2442 else
2443 printf ("%-6d", type);
2444 printf (" %-6d %-6d ", other, desc);
2445 bfd_printf_vma (abfd, value);
2446 printf (" %-6lu", strx);
2447
2448 /* Symbols with type == 0 (N_UNDF) specify the length of the
2449 string table associated with this file. We use that info
2450 to know how to relocate the *next* file's string table indices. */
2451 if (type == N_UNDF)
2452 {
2453 file_string_table_offset = next_file_string_table_offset;
2454 next_file_string_table_offset += value;
2455 }
2456 else
2457 {
2458 /* Using the (possibly updated) string table offset, print the
2459 string (if any) associated with this symbol. */
2460 if ((strx + file_string_table_offset) < stabstr_size)
2461 printf (" %s", &strtab[strx + file_string_table_offset]);
2462 else
2463 printf (" *");
2464 }
2465 }
2466 printf ("\n\n");
2467 *string_offset_ptr = next_file_string_table_offset;
2468 }
2469
2470 typedef struct
2471 {
2472 const char * section_name;
2473 const char * string_section_name;
2474 unsigned string_offset;
2475 }
2476 stab_section_names;
2477
2478 static void
2479 find_stabs_section (bfd *abfd, asection *section, void *names)
2480 {
2481 int len;
2482 stab_section_names * sought = (stab_section_names *) names;
2483
2484 /* Check for section names for which stabsect_name is a prefix, to
2485 handle .stab.N, etc. */
2486 len = strlen (sought->section_name);
2487
2488 /* If the prefix matches, and the files section name ends with a
2489 nul or a digit, then we match. I.e., we want either an exact
2490 match or a section followed by a number. */
2491 if (strncmp (sought->section_name, section->name, len) == 0
2492 && (section->name[len] == 0
2493 || (section->name[len] == '.' && ISDIGIT (section->name[len + 1]))))
2494 {
2495 if (strtab == NULL)
2496 strtab = read_section_stabs (abfd, sought->string_section_name,
2497 &stabstr_size);
2498
2499 if (strtab)
2500 {
2501 stabs = (bfd_byte *) read_section_stabs (abfd, section->name,
2502 &stab_size);
2503 if (stabs)
2504 print_section_stabs (abfd, section->name, &sought->string_offset);
2505 }
2506 }
2507 }
2508
2509 static void
2510 dump_stabs_section (bfd *abfd, char *stabsect_name, char *strsect_name)
2511 {
2512 stab_section_names s;
2513
2514 s.section_name = stabsect_name;
2515 s.string_section_name = strsect_name;
2516 s.string_offset = 0;
2517
2518 bfd_map_over_sections (abfd, find_stabs_section, & s);
2519
2520 free (strtab);
2521 strtab = NULL;
2522 }
2523
2524 /* Dump the any sections containing stabs debugging information. */
2525
2526 static void
2527 dump_stabs (bfd *abfd)
2528 {
2529 dump_stabs_section (abfd, ".stab", ".stabstr");
2530 dump_stabs_section (abfd, ".stab.excl", ".stab.exclstr");
2531 dump_stabs_section (abfd, ".stab.index", ".stab.indexstr");
2532
2533 /* For Darwin. */
2534 dump_stabs_section (abfd, "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr");
2535
2536 dump_stabs_section (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
2537 }
2538 \f
2539 static void
2540 dump_bfd_header (bfd *abfd)
2541 {
2542 char *comma = "";
2543
2544 printf (_("architecture: %s, "),
2545 bfd_printable_arch_mach (bfd_get_arch (abfd),
2546 bfd_get_mach (abfd)));
2547 printf (_("flags 0x%08x:\n"), abfd->flags);
2548
2549 #define PF(x, y) if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
2550 PF (HAS_RELOC, "HAS_RELOC");
2551 PF (EXEC_P, "EXEC_P");
2552 PF (HAS_LINENO, "HAS_LINENO");
2553 PF (HAS_DEBUG, "HAS_DEBUG");
2554 PF (HAS_SYMS, "HAS_SYMS");
2555 PF (HAS_LOCALS, "HAS_LOCALS");
2556 PF (DYNAMIC, "DYNAMIC");
2557 PF (WP_TEXT, "WP_TEXT");
2558 PF (D_PAGED, "D_PAGED");
2559 PF (BFD_IS_RELAXABLE, "BFD_IS_RELAXABLE");
2560 PF (HAS_LOAD_PAGE, "HAS_LOAD_PAGE");
2561 printf (_("\nstart address 0x"));
2562 bfd_printf_vma (abfd, abfd->start_address);
2563 printf ("\n");
2564 }
2565
2566 \f
2567 static void
2568 dump_bfd_private_header (bfd *abfd)
2569 {
2570 bfd_print_private_bfd_data (abfd, stdout);
2571 }
2572
2573 \f
2574 /* Display a section in hexadecimal format with associated characters.
2575 Each line prefixed by the zero padded address. */
2576
2577 static void
2578 dump_section (bfd *abfd, asection *section, void *dummy ATTRIBUTE_UNUSED)
2579 {
2580 bfd_byte *data = 0;
2581 bfd_size_type datasize;
2582 bfd_size_type addr_offset;
2583 bfd_size_type start_offset;
2584 bfd_size_type stop_offset;
2585 unsigned int opb = bfd_octets_per_byte (abfd);
2586 /* Bytes per line. */
2587 const int onaline = 16;
2588 char buf[64];
2589 int count;
2590 int width;
2591
2592 if ((section->flags & SEC_HAS_CONTENTS) == 0)
2593 return;
2594
2595 if (! process_section_p (section))
2596 return;
2597
2598 if ((datasize = bfd_section_size (abfd, section)) == 0)
2599 return;
2600
2601 /* Compute the address range to display. */
2602 if (start_address == (bfd_vma) -1
2603 || start_address < section->vma)
2604 start_offset = 0;
2605 else
2606 start_offset = start_address - section->vma;
2607
2608 if (stop_address == (bfd_vma) -1)
2609 stop_offset = datasize / opb;
2610 else
2611 {
2612 if (stop_address < section->vma)
2613 stop_offset = 0;
2614 else
2615 stop_offset = stop_address - section->vma;
2616
2617 if (stop_offset > datasize / opb)
2618 stop_offset = datasize / opb;
2619 }
2620
2621 if (start_offset >= stop_offset)
2622 return;
2623
2624 printf (_("Contents of section %s:"), section->name);
2625 if (display_file_offsets)
2626 printf (_(" (Starting at file offset: 0x%lx)"),
2627 (unsigned long) (section->filepos + start_offset));
2628 printf ("\n");
2629
2630 data = (bfd_byte *) xmalloc (datasize);
2631
2632 bfd_get_section_contents (abfd, section, data, 0, datasize);
2633
2634 width = 4;
2635
2636 bfd_sprintf_vma (abfd, buf, start_offset + section->vma);
2637 if (strlen (buf) >= sizeof (buf))
2638 abort ();
2639
2640 count = 0;
2641 while (buf[count] == '0' && buf[count+1] != '\0')
2642 count++;
2643 count = strlen (buf) - count;
2644 if (count > width)
2645 width = count;
2646
2647 bfd_sprintf_vma (abfd, buf, stop_offset + section->vma - 1);
2648 if (strlen (buf) >= sizeof (buf))
2649 abort ();
2650
2651 count = 0;
2652 while (buf[count] == '0' && buf[count+1] != '\0')
2653 count++;
2654 count = strlen (buf) - count;
2655 if (count > width)
2656 width = count;
2657
2658 for (addr_offset = start_offset;
2659 addr_offset < stop_offset; addr_offset += onaline / opb)
2660 {
2661 bfd_size_type j;
2662
2663 bfd_sprintf_vma (abfd, buf, (addr_offset + section->vma));
2664 count = strlen (buf);
2665 if ((size_t) count >= sizeof (buf))
2666 abort ();
2667
2668 putchar (' ');
2669 while (count < width)
2670 {
2671 putchar ('0');
2672 count++;
2673 }
2674 fputs (buf + count - width, stdout);
2675 putchar (' ');
2676
2677 for (j = addr_offset * opb;
2678 j < addr_offset * opb + onaline; j++)
2679 {
2680 if (j < stop_offset * opb)
2681 printf ("%02x", (unsigned) (data[j]));
2682 else
2683 printf (" ");
2684 if ((j & 3) == 3)
2685 printf (" ");
2686 }
2687
2688 printf (" ");
2689 for (j = addr_offset * opb;
2690 j < addr_offset * opb + onaline; j++)
2691 {
2692 if (j >= stop_offset * opb)
2693 printf (" ");
2694 else
2695 printf ("%c", ISPRINT (data[j]) ? data[j] : '.');
2696 }
2697 putchar ('\n');
2698 }
2699 free (data);
2700 }
2701
2702 /* Actually display the various requested regions. */
2703
2704 static void
2705 dump_data (bfd *abfd)
2706 {
2707 bfd_map_over_sections (abfd, dump_section, NULL);
2708 }
2709
2710 /* Should perhaps share code and display with nm? */
2711
2712 static void
2713 dump_symbols (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean dynamic)
2714 {
2715 asymbol **current;
2716 long max_count;
2717 long count;
2718
2719 if (dynamic)
2720 {
2721 current = dynsyms;
2722 max_count = dynsymcount;
2723 printf ("DYNAMIC SYMBOL TABLE:\n");
2724 }
2725 else
2726 {
2727 current = syms;
2728 max_count = symcount;
2729 printf ("SYMBOL TABLE:\n");
2730 }
2731
2732 if (max_count == 0)
2733 printf (_("no symbols\n"));
2734
2735 for (count = 0; count < max_count; count++)
2736 {
2737 bfd *cur_bfd;
2738
2739 if (*current == NULL)
2740 printf (_("no information for symbol number %ld\n"), count);
2741
2742 else if ((cur_bfd = bfd_asymbol_bfd (*current)) == NULL)
2743 printf (_("could not determine the type of symbol number %ld\n"),
2744 count);
2745
2746 else if (process_section_p ((* current)->section)
2747 && (dump_special_syms
2748 || !bfd_is_target_special_symbol (cur_bfd, *current)))
2749 {
2750 const char *name = (*current)->name;
2751
2752 if (do_demangle && name != NULL && *name != '\0')
2753 {
2754 char *alloc;
2755
2756 /* If we want to demangle the name, we demangle it
2757 here, and temporarily clobber it while calling
2758 bfd_print_symbol. FIXME: This is a gross hack. */
2759 alloc = bfd_demangle (cur_bfd, name, DMGL_ANSI | DMGL_PARAMS);
2760 if (alloc != NULL)
2761 (*current)->name = alloc;
2762 bfd_print_symbol (cur_bfd, stdout, *current,
2763 bfd_print_symbol_all);
2764 if (alloc != NULL)
2765 {
2766 (*current)->name = name;
2767 free (alloc);
2768 }
2769 }
2770 else
2771 bfd_print_symbol (cur_bfd, stdout, *current,
2772 bfd_print_symbol_all);
2773 printf ("\n");
2774 }
2775
2776 current++;
2777 }
2778 printf ("\n\n");
2779 }
2780 \f
2781 static void
2782 dump_reloc_set (bfd *abfd, asection *sec, arelent **relpp, long relcount)
2783 {
2784 arelent **p;
2785 char *last_filename, *last_functionname;
2786 unsigned int last_line;
2787
2788 /* Get column headers lined up reasonably. */
2789 {
2790 static int width;
2791
2792 if (width == 0)
2793 {
2794 char buf[30];
2795
2796 bfd_sprintf_vma (abfd, buf, (bfd_vma) -1);
2797 width = strlen (buf) - 7;
2798 }
2799 printf ("OFFSET %*s TYPE %*s VALUE \n", width, "", 12, "");
2800 }
2801
2802 last_filename = NULL;
2803 last_functionname = NULL;
2804 last_line = 0;
2805
2806 for (p = relpp; relcount && *p != NULL; p++, relcount--)
2807 {
2808 arelent *q = *p;
2809 const char *filename, *functionname;
2810 unsigned int linenumber;
2811 const char *sym_name;
2812 const char *section_name;
2813
2814 if (start_address != (bfd_vma) -1
2815 && q->address < start_address)
2816 continue;
2817 if (stop_address != (bfd_vma) -1
2818 && q->address > stop_address)
2819 continue;
2820
2821 if (with_line_numbers
2822 && sec != NULL
2823 && bfd_find_nearest_line (abfd, sec, syms, q->address,
2824 &filename, &functionname, &linenumber))
2825 {
2826 if (functionname != NULL
2827 && (last_functionname == NULL
2828 || strcmp (functionname, last_functionname) != 0))
2829 {
2830 printf ("%s():\n", functionname);
2831 if (last_functionname != NULL)
2832 free (last_functionname);
2833 last_functionname = xstrdup (functionname);
2834 }
2835
2836 if (linenumber > 0
2837 && (linenumber != last_line
2838 || (filename != NULL
2839 && last_filename != NULL
2840 && strcmp (filename, last_filename) != 0)))
2841 {
2842 printf ("%s:%u\n", filename == NULL ? "???" : filename, linenumber);
2843 last_line = linenumber;
2844 if (last_filename != NULL)
2845 free (last_filename);
2846 if (filename == NULL)
2847 last_filename = NULL;
2848 else
2849 last_filename = xstrdup (filename);
2850 }
2851 }
2852
2853 if (q->sym_ptr_ptr && *q->sym_ptr_ptr)
2854 {
2855 sym_name = (*(q->sym_ptr_ptr))->name;
2856 section_name = (*(q->sym_ptr_ptr))->section->name;
2857 }
2858 else
2859 {
2860 sym_name = NULL;
2861 section_name = NULL;
2862 }
2863
2864 bfd_printf_vma (abfd, q->address);
2865 if (q->howto == NULL)
2866 printf (" *unknown* ");
2867 else if (q->howto->name)
2868 printf (" %-16s ", q->howto->name);
2869 else
2870 printf (" %-16d ", q->howto->type);
2871
2872 if (sym_name)
2873 {
2874 objdump_print_symname (abfd, NULL, *q->sym_ptr_ptr);
2875 }
2876 else
2877 {
2878 if (section_name == NULL)
2879 section_name = "*unknown*";
2880 printf ("[%s]", section_name);
2881 }
2882
2883 if (q->addend)
2884 {
2885 printf ("+0x");
2886 bfd_printf_vma (abfd, q->addend);
2887 }
2888
2889 printf ("\n");
2890 }
2891 }
2892
2893 static void
2894 dump_relocs_in_section (bfd *abfd,
2895 asection *section,
2896 void *dummy ATTRIBUTE_UNUSED)
2897 {
2898 arelent **relpp;
2899 long relcount;
2900 long relsize;
2901
2902 if ( bfd_is_abs_section (section)
2903 || bfd_is_und_section (section)
2904 || bfd_is_com_section (section)
2905 || (! process_section_p (section))
2906 || ((section->flags & SEC_RELOC) == 0))
2907 return;
2908
2909 relsize = bfd_get_reloc_upper_bound (abfd, section);
2910 if (relsize < 0)
2911 bfd_fatal (bfd_get_filename (abfd));
2912
2913 printf ("RELOCATION RECORDS FOR [%s]:", section->name);
2914
2915 if (relsize == 0)
2916 {
2917 printf (" (none)\n\n");
2918 return;
2919 }
2920
2921 relpp = (arelent **) xmalloc (relsize);
2922 relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
2923
2924 if (relcount < 0)
2925 bfd_fatal (bfd_get_filename (abfd));
2926 else if (relcount == 0)
2927 printf (" (none)\n\n");
2928 else
2929 {
2930 printf ("\n");
2931 dump_reloc_set (abfd, section, relpp, relcount);
2932 printf ("\n\n");
2933 }
2934 free (relpp);
2935 }
2936
2937 static void
2938 dump_relocs (bfd *abfd)
2939 {
2940 bfd_map_over_sections (abfd, dump_relocs_in_section, NULL);
2941 }
2942
2943 static void
2944 dump_dynamic_relocs (bfd *abfd)
2945 {
2946 long relsize;
2947 arelent **relpp;
2948 long relcount;
2949
2950 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2951 if (relsize < 0)
2952 bfd_fatal (bfd_get_filename (abfd));
2953
2954 printf ("DYNAMIC RELOCATION RECORDS");
2955
2956 if (relsize == 0)
2957 printf (" (none)\n\n");
2958 else
2959 {
2960 relpp = (arelent **) xmalloc (relsize);
2961 relcount = bfd_canonicalize_dynamic_reloc (abfd, relpp, dynsyms);
2962
2963 if (relcount < 0)
2964 bfd_fatal (bfd_get_filename (abfd));
2965 else if (relcount == 0)
2966 printf (" (none)\n\n");
2967 else
2968 {
2969 printf ("\n");
2970 dump_reloc_set (abfd, NULL, relpp, relcount);
2971 printf ("\n\n");
2972 }
2973 free (relpp);
2974 }
2975 }
2976
2977 /* Creates a table of paths, to search for source files. */
2978
2979 static void
2980 add_include_path (const char *path)
2981 {
2982 if (path[0] == 0)
2983 return;
2984 include_path_count++;
2985 include_paths = (const char **)
2986 xrealloc (include_paths, include_path_count * sizeof (*include_paths));
2987 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2988 if (path[1] == ':' && path[2] == 0)
2989 path = concat (path, ".", (const char *) 0);
2990 #endif
2991 include_paths[include_path_count - 1] = path;
2992 }
2993
2994 static void
2995 adjust_addresses (bfd *abfd ATTRIBUTE_UNUSED,
2996 asection *section,
2997 void *arg)
2998 {
2999 if ((section->flags & SEC_DEBUGGING) == 0)
3000 {
3001 bfd_boolean *has_reloc_p = (bfd_boolean *) arg;
3002 section->vma += adjust_section_vma;
3003 if (*has_reloc_p)
3004 section->lma += adjust_section_vma;
3005 }
3006 }
3007
3008 /* Dump selected contents of ABFD. */
3009
3010 static void
3011 dump_bfd (bfd *abfd)
3012 {
3013 /* If we are adjusting section VMA's, change them all now. Changing
3014 the BFD information is a hack. However, we must do it, or
3015 bfd_find_nearest_line will not do the right thing. */
3016 if (adjust_section_vma != 0)
3017 {
3018 bfd_boolean has_reloc = (abfd->flags & HAS_RELOC);
3019 bfd_map_over_sections (abfd, adjust_addresses, &has_reloc);
3020 }
3021
3022 if (! dump_debugging_tags)
3023 printf (_("\n%s: file format %s\n"), bfd_get_filename (abfd),
3024 abfd->xvec->name);
3025 if (dump_ar_hdrs)
3026 print_arelt_descr (stdout, abfd, TRUE);
3027 if (dump_file_header)
3028 dump_bfd_header (abfd);
3029 if (dump_private_headers)
3030 dump_bfd_private_header (abfd);
3031 if (! dump_debugging_tags)
3032 putchar ('\n');
3033 if (dump_section_headers)
3034 dump_headers (abfd);
3035
3036 if (dump_symtab
3037 || dump_reloc_info
3038 || disassemble
3039 || dump_debugging
3040 || dump_dwarf_section_info)
3041 syms = slurp_symtab (abfd);
3042 if (dump_dynamic_symtab || dump_dynamic_reloc_info
3043 || (disassemble && bfd_get_dynamic_symtab_upper_bound (abfd) > 0))
3044 dynsyms = slurp_dynamic_symtab (abfd);
3045 if (disassemble)
3046 {
3047 synthcount = bfd_get_synthetic_symtab (abfd, symcount, syms,
3048 dynsymcount, dynsyms, &synthsyms);
3049 if (synthcount < 0)
3050 synthcount = 0;
3051 }
3052
3053 if (dump_symtab)
3054 dump_symbols (abfd, FALSE);
3055 if (dump_dynamic_symtab)
3056 dump_symbols (abfd, TRUE);
3057 if (dump_dwarf_section_info)
3058 dump_dwarf (abfd);
3059 if (dump_stab_section_info)
3060 dump_stabs (abfd);
3061 if (dump_reloc_info && ! disassemble)
3062 dump_relocs (abfd);
3063 if (dump_dynamic_reloc_info && ! disassemble)
3064 dump_dynamic_relocs (abfd);
3065 if (dump_section_contents)
3066 dump_data (abfd);
3067 if (disassemble)
3068 disassemble_data (abfd);
3069
3070 if (dump_debugging)
3071 {
3072 void *dhandle;
3073
3074 dhandle = read_debugging_info (abfd, syms, symcount, TRUE);
3075 if (dhandle != NULL)
3076 {
3077 if (!print_debugging_info (stdout, dhandle, abfd, syms,
3078 bfd_demangle,
3079 dump_debugging_tags ? TRUE : FALSE))
3080 {
3081 non_fatal (_("%s: printing debugging information failed"),
3082 bfd_get_filename (abfd));
3083 exit_status = 1;
3084 }
3085 }
3086 /* PR 6483: If there was no STABS or IEEE debug
3087 info in the file, try DWARF instead. */
3088 else if (! dump_dwarf_section_info)
3089 {
3090 dump_dwarf (abfd);
3091 }
3092 }
3093
3094 if (syms)
3095 {
3096 free (syms);
3097 syms = NULL;
3098 }
3099
3100 if (dynsyms)
3101 {
3102 free (dynsyms);
3103 dynsyms = NULL;
3104 }
3105
3106 if (synthsyms)
3107 {
3108 free (synthsyms);
3109 synthsyms = NULL;
3110 }
3111
3112 symcount = 0;
3113 dynsymcount = 0;
3114 synthcount = 0;
3115 }
3116
3117 static void
3118 display_bfd (bfd *abfd)
3119 {
3120 char **matching;
3121
3122 if (bfd_check_format_matches (abfd, bfd_object, &matching))
3123 {
3124 dump_bfd (abfd);
3125 return;
3126 }
3127
3128 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3129 {
3130 nonfatal (bfd_get_filename (abfd));
3131 list_matching_formats (matching);
3132 free (matching);
3133 return;
3134 }
3135
3136 if (bfd_get_error () != bfd_error_file_not_recognized)
3137 {
3138 nonfatal (bfd_get_filename (abfd));
3139 return;
3140 }
3141
3142 if (bfd_check_format_matches (abfd, bfd_core, &matching))
3143 {
3144 dump_bfd (abfd);
3145 return;
3146 }
3147
3148 nonfatal (bfd_get_filename (abfd));
3149
3150 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3151 {
3152 list_matching_formats (matching);
3153 free (matching);
3154 }
3155 }
3156
3157 static void
3158 display_file (char *filename, char *target)
3159 {
3160 bfd *file;
3161 bfd *arfile = NULL;
3162
3163 if (get_file_size (filename) < 1)
3164 {
3165 exit_status = 1;
3166 return;
3167 }
3168
3169 file = bfd_openr (filename, target);
3170 if (file == NULL)
3171 {
3172 nonfatal (filename);
3173 return;
3174 }
3175
3176 /* If the file is an archive, process all of its elements. */
3177 if (bfd_check_format (file, bfd_archive))
3178 {
3179 bfd *last_arfile = NULL;
3180
3181 printf (_("In archive %s:\n"), bfd_get_filename (file));
3182 for (;;)
3183 {
3184 bfd_set_error (bfd_error_no_error);
3185
3186 arfile = bfd_openr_next_archived_file (file, arfile);
3187 if (arfile == NULL)
3188 {
3189 if (bfd_get_error () != bfd_error_no_more_archived_files)
3190 nonfatal (bfd_get_filename (file));
3191 break;
3192 }
3193
3194 display_bfd (arfile);
3195
3196 if (last_arfile != NULL)
3197 bfd_close (last_arfile);
3198 last_arfile = arfile;
3199 }
3200
3201 if (last_arfile != NULL)
3202 bfd_close (last_arfile);
3203 }
3204 else
3205 display_bfd (file);
3206
3207 bfd_close (file);
3208 }
3209 \f
3210 int
3211 main (int argc, char **argv)
3212 {
3213 int c;
3214 char *target = default_target;
3215 bfd_boolean seenflag = FALSE;
3216
3217 #if defined (HAVE_SETLOCALE)
3218 #if defined (HAVE_LC_MESSAGES)
3219 setlocale (LC_MESSAGES, "");
3220 #endif
3221 setlocale (LC_CTYPE, "");
3222 #endif
3223
3224 bindtextdomain (PACKAGE, LOCALEDIR);
3225 textdomain (PACKAGE);
3226
3227 program_name = *argv;
3228 xmalloc_set_program_name (program_name);
3229
3230 START_PROGRESS (program_name, 0);
3231
3232 expandargv (&argc, &argv);
3233
3234 bfd_init ();
3235 set_default_bfd_target ();
3236
3237 while ((c = getopt_long (argc, argv,
3238 "pib:m:M:VvCdDlfFaHhrRtTxsSI:j:wE:zgeGW::",
3239 long_options, (int *) 0))
3240 != EOF)
3241 {
3242 switch (c)
3243 {
3244 case 0:
3245 break; /* We've been given a long option. */
3246 case 'm':
3247 machine = optarg;
3248 break;
3249 case 'M':
3250 if (disassembler_options)
3251 /* Ignore potential memory leak for now. */
3252 disassembler_options = concat (disassembler_options, ",",
3253 optarg, (const char *) NULL);
3254 else
3255 disassembler_options = optarg;
3256 break;
3257 case 'j':
3258 add_only (optarg);
3259 break;
3260 case 'F':
3261 display_file_offsets = TRUE;
3262 break;
3263 case 'l':
3264 with_line_numbers = TRUE;
3265 break;
3266 case 'b':
3267 target = optarg;
3268 break;
3269 case 'C':
3270 do_demangle = TRUE;
3271 if (optarg != NULL)
3272 {
3273 enum demangling_styles style;
3274
3275 style = cplus_demangle_name_to_style (optarg);
3276 if (style == unknown_demangling)
3277 fatal (_("unknown demangling style `%s'"),
3278 optarg);
3279
3280 cplus_demangle_set_style (style);
3281 }
3282 break;
3283 case 'w':
3284 wide_output = TRUE;
3285 break;
3286 case OPTION_ADJUST_VMA:
3287 adjust_section_vma = parse_vma (optarg, "--adjust-vma");
3288 break;
3289 case OPTION_START_ADDRESS:
3290 start_address = parse_vma (optarg, "--start-address");
3291 if ((stop_address != (bfd_vma) -1) && stop_address <= start_address)
3292 fatal (_("error: the start address should be before the end address"));
3293 break;
3294 case OPTION_STOP_ADDRESS:
3295 stop_address = parse_vma (optarg, "--stop-address");
3296 if ((start_address != (bfd_vma) -1) && stop_address <= start_address)
3297 fatal (_("error: the stop address should be after the start address"));
3298 break;
3299 case OPTION_PREFIX:
3300 prefix = optarg;
3301 prefix_length = strlen (prefix);
3302 /* Remove an unnecessary trailing '/' */
3303 while (IS_DIR_SEPARATOR (prefix[prefix_length - 1]))
3304 prefix_length--;
3305 break;
3306 case OPTION_PREFIX_STRIP:
3307 prefix_strip = atoi (optarg);
3308 if (prefix_strip < 0)
3309 fatal (_("error: prefix strip must be non-negative"));
3310 break;
3311 case OPTION_INSN_WIDTH:
3312 insn_width = strtoul (optarg, NULL, 0);
3313 if (insn_width <= 0)
3314 fatal (_("error: instruction width must be positive"));
3315 break;
3316 case 'E':
3317 if (strcmp (optarg, "B") == 0)
3318 endian = BFD_ENDIAN_BIG;
3319 else if (strcmp (optarg, "L") == 0)
3320 endian = BFD_ENDIAN_LITTLE;
3321 else
3322 {
3323 non_fatal (_("unrecognized -E option"));
3324 usage (stderr, 1);
3325 }
3326 break;
3327 case OPTION_ENDIAN:
3328 if (strncmp (optarg, "big", strlen (optarg)) == 0)
3329 endian = BFD_ENDIAN_BIG;
3330 else if (strncmp (optarg, "little", strlen (optarg)) == 0)
3331 endian = BFD_ENDIAN_LITTLE;
3332 else
3333 {
3334 non_fatal (_("unrecognized --endian type `%s'"), optarg);
3335 usage (stderr, 1);
3336 }
3337 break;
3338
3339 case 'f':
3340 dump_file_header = TRUE;
3341 seenflag = TRUE;
3342 break;
3343 case 'i':
3344 formats_info = TRUE;
3345 seenflag = TRUE;
3346 break;
3347 case 'I':
3348 add_include_path (optarg);
3349 break;
3350 case 'p':
3351 dump_private_headers = TRUE;
3352 seenflag = TRUE;
3353 break;
3354 case 'x':
3355 dump_private_headers = TRUE;
3356 dump_symtab = TRUE;
3357 dump_reloc_info = TRUE;
3358 dump_file_header = TRUE;
3359 dump_ar_hdrs = TRUE;
3360 dump_section_headers = TRUE;
3361 seenflag = TRUE;
3362 break;
3363 case 't':
3364 dump_symtab = TRUE;
3365 seenflag = TRUE;
3366 break;
3367 case 'T':
3368 dump_dynamic_symtab = TRUE;
3369 seenflag = TRUE;
3370 break;
3371 case 'd':
3372 disassemble = TRUE;
3373 seenflag = TRUE;
3374 break;
3375 case 'z':
3376 disassemble_zeroes = TRUE;
3377 break;
3378 case 'D':
3379 disassemble = TRUE;
3380 disassemble_all = TRUE;
3381 seenflag = TRUE;
3382 break;
3383 case 'S':
3384 disassemble = TRUE;
3385 with_source_code = TRUE;
3386 seenflag = TRUE;
3387 break;
3388 case 'g':
3389 dump_debugging = 1;
3390 seenflag = TRUE;
3391 break;
3392 case 'e':
3393 dump_debugging = 1;
3394 dump_debugging_tags = 1;
3395 do_demangle = TRUE;
3396 seenflag = TRUE;
3397 break;
3398 case 'W':
3399 dump_dwarf_section_info = TRUE;
3400 seenflag = TRUE;
3401 if (optarg)
3402 dwarf_select_sections_by_letters (optarg);
3403 else
3404 dwarf_select_sections_all ();
3405 break;
3406 case OPTION_DWARF:
3407 dump_dwarf_section_info = TRUE;
3408 seenflag = TRUE;
3409 if (optarg)
3410 dwarf_select_sections_by_names (optarg);
3411 else
3412 dwarf_select_sections_all ();
3413 break;
3414 case 'G':
3415 dump_stab_section_info = TRUE;
3416 seenflag = TRUE;
3417 break;
3418 case 's':
3419 dump_section_contents = TRUE;
3420 seenflag = TRUE;
3421 break;
3422 case 'r':
3423 dump_reloc_info = TRUE;
3424 seenflag = TRUE;
3425 break;
3426 case 'R':
3427 dump_dynamic_reloc_info = TRUE;
3428 seenflag = TRUE;
3429 break;
3430 case 'a':
3431 dump_ar_hdrs = TRUE;
3432 seenflag = TRUE;
3433 break;
3434 case 'h':
3435 dump_section_headers = TRUE;
3436 seenflag = TRUE;
3437 break;
3438 case 'H':
3439 usage (stdout, 0);
3440 seenflag = TRUE;
3441 case 'v':
3442 case 'V':
3443 show_version = TRUE;
3444 seenflag = TRUE;
3445 break;
3446
3447 default:
3448 usage (stderr, 1);
3449 }
3450 }
3451
3452 if (show_version)
3453 print_version ("objdump");
3454
3455 if (!seenflag)
3456 usage (stderr, 2);
3457
3458 if (formats_info)
3459 exit_status = display_info ();
3460 else
3461 {
3462 if (optind == argc)
3463 display_file ("a.out", target);
3464 else
3465 for (; optind < argc;)
3466 display_file (argv[optind++], target);
3467 }
3468
3469 free_only_list ();
3470
3471 END_PROGRESS (program_name);
3472
3473 return exit_status;
3474 }
This page took 0.105366 seconds and 4 git commands to generate.