* testsuite/retain_symbols_file_test.sh: Don't test for __tcf_0.
[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
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 /* Pointer to an array of section names provided by
121 one or more "-j secname" command line options. */
122 static char **only;
123 /* The total number of slots in the only[] array. */
124 static size_t only_size = 0;
125 /* The number of occupied slots in the only[] array. */
126 static size_t only_used = 0;
127
128 /* Variables for handling include file path table. */
129 static const char **include_paths;
130 static int include_path_count;
131
132 /* Extra info to pass to the section disassembler and address printing
133 function. */
134 struct objdump_disasm_info
135 {
136 bfd * abfd;
137 asection * sec;
138 bfd_boolean require_sec;
139 arelent ** dynrelbuf;
140 long dynrelcount;
141 disassembler_ftype disassemble_fn;
142 arelent * reloc;
143 };
144
145 /* Architecture to disassemble for, or default if NULL. */
146 static char *machine = NULL;
147
148 /* Target specific options to the disassembler. */
149 static char *disassembler_options = NULL;
150
151 /* Endianness to disassemble for, or default if BFD_ENDIAN_UNKNOWN. */
152 static enum bfd_endian endian = BFD_ENDIAN_UNKNOWN;
153
154 /* The symbol table. */
155 static asymbol **syms;
156
157 /* Number of symbols in `syms'. */
158 static long symcount = 0;
159
160 /* The sorted symbol table. */
161 static asymbol **sorted_syms;
162
163 /* Number of symbols in `sorted_syms'. */
164 static long sorted_symcount = 0;
165
166 /* The dynamic symbol table. */
167 static asymbol **dynsyms;
168
169 /* The synthetic symbol table. */
170 static asymbol *synthsyms;
171 static long synthcount = 0;
172
173 /* Number of symbols in `dynsyms'. */
174 static long dynsymcount = 0;
175
176 static bfd_byte *stabs;
177 static bfd_size_type stab_size;
178
179 static char *strtab;
180 static bfd_size_type stabstr_size;
181
182 static bfd_boolean is_relocatable = FALSE;
183 \f
184 static void
185 usage (FILE *stream, int status)
186 {
187 fprintf (stream, _("Usage: %s <option(s)> <file(s)>\n"), program_name);
188 fprintf (stream, _(" Display information from object <file(s)>.\n"));
189 fprintf (stream, _(" At least one of the following switches must be given:\n"));
190 fprintf (stream, _("\
191 -a, --archive-headers Display archive header information\n\
192 -f, --file-headers Display the contents of the overall file header\n\
193 -p, --private-headers Display object format specific file header contents\n\
194 -h, --[section-]headers Display the contents of the section headers\n\
195 -x, --all-headers Display the contents of all headers\n\
196 -d, --disassemble Display assembler contents of executable sections\n\
197 -D, --disassemble-all Display assembler contents of all sections\n\
198 -S, --source Intermix source code with disassembly\n\
199 -s, --full-contents Display the full contents of all sections requested\n\
200 -g, --debugging Display debug information in object file\n\
201 -e, --debugging-tags Display debug information using ctags style\n\
202 -G, --stabs Display (in raw form) any STABS info in the file\n\
203 -W[lLiaprmfFsoR] or\n\
204 --dwarf[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=str,=loc,=Ranges]\n\
205 Display DWARF info in the file\n\
206 -t, --syms Display the contents of the symbol table(s)\n\
207 -T, --dynamic-syms Display the contents of the dynamic symbol table\n\
208 -r, --reloc Display the relocation entries in the file\n\
209 -R, --dynamic-reloc Display the dynamic relocation entries in the file\n\
210 @<file> Read options from <file>\n\
211 -v, --version Display this program's version number\n\
212 -i, --info List object formats and architectures supported\n\
213 -H, --help Display this information\n\
214 "));
215 if (status != 2)
216 {
217 fprintf (stream, _("\n The following switches are optional:\n"));
218 fprintf (stream, _("\
219 -b, --target=BFDNAME Specify the target object format as BFDNAME\n\
220 -m, --architecture=MACHINE Specify the target architecture as MACHINE\n\
221 -j, --section=NAME Only display information for section NAME\n\
222 -M, --disassembler-options=OPT Pass text OPT on to the disassembler\n\
223 -EB --endian=big Assume big endian format when disassembling\n\
224 -EL --endian=little Assume little endian format when disassembling\n\
225 --file-start-context Include context from start of file (with -S)\n\
226 -I, --include=DIR Add DIR to search list for source files\n\
227 -l, --line-numbers Include line numbers and filenames in output\n\
228 -F, --file-offsets Include file offsets when displaying information\n\
229 -C, --demangle[=STYLE] Decode mangled/processed symbol names\n\
230 The STYLE, if specified, can be `auto', `gnu',\n\
231 `lucid', `arm', `hp', `edg', `gnu-v3', `java'\n\
232 or `gnat'\n\
233 -w, --wide Format output for more than 80 columns\n\
234 -z, --disassemble-zeroes Do not skip blocks of zeroes when disassembling\n\
235 --start-address=ADDR Only process data whose address is >= ADDR\n\
236 --stop-address=ADDR Only process data whose address is <= ADDR\n\
237 --prefix-addresses Print complete address alongside disassembly\n\
238 --[no-]show-raw-insn Display hex alongside symbolic disassembly\n\
239 --insn-width=WIDTH Display WIDTH bytes on a signle line for -d\n\
240 --adjust-vma=OFFSET Add OFFSET to all displayed section addresses\n\
241 --special-syms Include special symbols in symbol dumps\n\
242 --prefix=PREFIX Add PREFIX to absolute paths for -S\n\
243 --prefix-strip=LEVEL Strip initial directory names for -S\n\
244 \n"));
245 list_supported_targets (program_name, stream);
246 list_supported_architectures (program_name, stream);
247
248 disassembler_usage (stream);
249 }
250 if (REPORT_BUGS_TO[0] && status == 0)
251 fprintf (stream, _("Report bugs to %s.\n"), REPORT_BUGS_TO);
252 exit (status);
253 }
254
255 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
256 enum option_values
257 {
258 OPTION_ENDIAN=150,
259 OPTION_START_ADDRESS,
260 OPTION_STOP_ADDRESS,
261 OPTION_DWARF,
262 OPTION_PREFIX,
263 OPTION_PREFIX_STRIP,
264 OPTION_INSN_WIDTH,
265 OPTION_ADJUST_VMA
266 };
267
268 static struct option long_options[]=
269 {
270 {"adjust-vma", required_argument, NULL, OPTION_ADJUST_VMA},
271 {"all-headers", no_argument, NULL, 'x'},
272 {"private-headers", no_argument, NULL, 'p'},
273 {"architecture", required_argument, NULL, 'm'},
274 {"archive-headers", no_argument, NULL, 'a'},
275 {"debugging", no_argument, NULL, 'g'},
276 {"debugging-tags", no_argument, NULL, 'e'},
277 {"demangle", optional_argument, NULL, 'C'},
278 {"disassemble", no_argument, NULL, 'd'},
279 {"disassemble-all", no_argument, NULL, 'D'},
280 {"disassembler-options", required_argument, NULL, 'M'},
281 {"disassemble-zeroes", no_argument, NULL, 'z'},
282 {"dynamic-reloc", no_argument, NULL, 'R'},
283 {"dynamic-syms", no_argument, NULL, 'T'},
284 {"endian", required_argument, NULL, OPTION_ENDIAN},
285 {"file-headers", no_argument, NULL, 'f'},
286 {"file-offsets", no_argument, NULL, 'F'},
287 {"file-start-context", no_argument, &file_start_context, 1},
288 {"full-contents", no_argument, NULL, 's'},
289 {"headers", no_argument, NULL, 'h'},
290 {"help", no_argument, NULL, 'H'},
291 {"info", no_argument, NULL, 'i'},
292 {"line-numbers", no_argument, NULL, 'l'},
293 {"no-show-raw-insn", no_argument, &show_raw_insn, -1},
294 {"prefix-addresses", no_argument, &prefix_addresses, 1},
295 {"reloc", no_argument, NULL, 'r'},
296 {"section", required_argument, NULL, 'j'},
297 {"section-headers", no_argument, NULL, 'h'},
298 {"show-raw-insn", no_argument, &show_raw_insn, 1},
299 {"source", no_argument, NULL, 'S'},
300 {"special-syms", no_argument, &dump_special_syms, 1},
301 {"include", required_argument, NULL, 'I'},
302 {"dwarf", optional_argument, NULL, OPTION_DWARF},
303 {"stabs", no_argument, NULL, 'G'},
304 {"start-address", required_argument, NULL, OPTION_START_ADDRESS},
305 {"stop-address", required_argument, NULL, OPTION_STOP_ADDRESS},
306 {"syms", no_argument, NULL, 't'},
307 {"target", required_argument, NULL, 'b'},
308 {"version", no_argument, NULL, 'V'},
309 {"wide", no_argument, NULL, 'w'},
310 {"prefix", required_argument, NULL, OPTION_PREFIX},
311 {"prefix-strip", required_argument, NULL, OPTION_PREFIX_STRIP},
312 {"insn-width", required_argument, NULL, OPTION_INSN_WIDTH},
313 {0, no_argument, 0, 0}
314 };
315 \f
316 static void
317 nonfatal (const char *msg)
318 {
319 bfd_nonfatal (msg);
320 exit_status = 1;
321 }
322 \f
323 /* Returns TRUE if the specified section should be dumped. */
324
325 static bfd_boolean
326 process_section_p (asection * section)
327 {
328 size_t i;
329
330 if (only == NULL)
331 return TRUE;
332
333 for (i = 0; i < only_used; i++)
334 if (strcmp (only [i], section->name) == 0)
335 return TRUE;
336
337 return FALSE;
338 }
339 \f
340 static void
341 dump_section_header (bfd *abfd, asection *section,
342 void *ignored ATTRIBUTE_UNUSED)
343 {
344 char *comma = "";
345 unsigned int opb = bfd_octets_per_byte (abfd);
346
347 /* Ignore linker created section. See elfNN_ia64_object_p in
348 bfd/elfxx-ia64.c. */
349 if (section->flags & SEC_LINKER_CREATED)
350 return;
351
352 /* PR 10413: Skip sections that we are ignoring. */
353 if (! process_section_p (section))
354 return;
355
356 printf ("%3d %-13s %08lx ", section->index,
357 bfd_get_section_name (abfd, section),
358 (unsigned long) bfd_section_size (abfd, section) / opb);
359 bfd_printf_vma (abfd, bfd_get_section_vma (abfd, section));
360 printf (" ");
361 bfd_printf_vma (abfd, section->lma);
362 printf (" %08lx 2**%u", (unsigned long) section->filepos,
363 bfd_get_section_alignment (abfd, section));
364 if (! wide_output)
365 printf ("\n ");
366 printf (" ");
367
368 #define PF(x, y) \
369 if (section->flags & x) { printf ("%s%s", comma, y); comma = ", "; }
370
371 PF (SEC_HAS_CONTENTS, "CONTENTS");
372 PF (SEC_ALLOC, "ALLOC");
373 PF (SEC_CONSTRUCTOR, "CONSTRUCTOR");
374 PF (SEC_LOAD, "LOAD");
375 PF (SEC_RELOC, "RELOC");
376 PF (SEC_READONLY, "READONLY");
377 PF (SEC_CODE, "CODE");
378 PF (SEC_DATA, "DATA");
379 PF (SEC_ROM, "ROM");
380 PF (SEC_DEBUGGING, "DEBUGGING");
381 PF (SEC_NEVER_LOAD, "NEVER_LOAD");
382 PF (SEC_EXCLUDE, "EXCLUDE");
383 PF (SEC_SORT_ENTRIES, "SORT_ENTRIES");
384 if (bfd_get_arch (abfd) == bfd_arch_tic54x)
385 {
386 PF (SEC_TIC54X_BLOCK, "BLOCK");
387 PF (SEC_TIC54X_CLINK, "CLINK");
388 }
389 PF (SEC_SMALL_DATA, "SMALL_DATA");
390 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
391 PF (SEC_COFF_SHARED, "SHARED");
392 PF (SEC_THREAD_LOCAL, "THREAD_LOCAL");
393 PF (SEC_GROUP, "GROUP");
394
395 if ((section->flags & SEC_LINK_ONCE) != 0)
396 {
397 const char *ls;
398 struct coff_comdat_info *comdat;
399
400 switch (section->flags & SEC_LINK_DUPLICATES)
401 {
402 default:
403 abort ();
404 case SEC_LINK_DUPLICATES_DISCARD:
405 ls = "LINK_ONCE_DISCARD";
406 break;
407 case SEC_LINK_DUPLICATES_ONE_ONLY:
408 ls = "LINK_ONCE_ONE_ONLY";
409 break;
410 case SEC_LINK_DUPLICATES_SAME_SIZE:
411 ls = "LINK_ONCE_SAME_SIZE";
412 break;
413 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
414 ls = "LINK_ONCE_SAME_CONTENTS";
415 break;
416 }
417 printf ("%s%s", comma, ls);
418
419 comdat = bfd_coff_get_comdat_section (abfd, section);
420 if (comdat != NULL)
421 printf (" (COMDAT %s %ld)", comdat->name, comdat->symbol);
422
423 comma = ", ";
424 }
425
426 printf ("\n");
427 #undef PF
428 }
429
430 static void
431 dump_headers (bfd *abfd)
432 {
433 printf (_("Sections:\n"));
434
435 #ifndef BFD64
436 printf (_("Idx Name Size VMA LMA File off Algn"));
437 #else
438 /* With BFD64, non-ELF returns -1 and wants always 64 bit addresses. */
439 if (bfd_get_arch_size (abfd) == 32)
440 printf (_("Idx Name Size VMA LMA File off Algn"));
441 else
442 printf (_("Idx Name Size VMA LMA File off Algn"));
443 #endif
444
445 if (wide_output)
446 printf (_(" Flags"));
447 if (abfd->flags & HAS_LOAD_PAGE)
448 printf (_(" Pg"));
449 printf ("\n");
450
451 bfd_map_over_sections (abfd, dump_section_header, NULL);
452 }
453 \f
454 static asymbol **
455 slurp_symtab (bfd *abfd)
456 {
457 asymbol **sy = NULL;
458 long storage;
459
460 if (!(bfd_get_file_flags (abfd) & HAS_SYMS))
461 {
462 symcount = 0;
463 return NULL;
464 }
465
466 storage = bfd_get_symtab_upper_bound (abfd);
467 if (storage < 0)
468 bfd_fatal (bfd_get_filename (abfd));
469 if (storage)
470 sy = (asymbol **) xmalloc (storage);
471
472 symcount = bfd_canonicalize_symtab (abfd, sy);
473 if (symcount < 0)
474 bfd_fatal (bfd_get_filename (abfd));
475 return sy;
476 }
477
478 /* Read in the dynamic symbols. */
479
480 static asymbol **
481 slurp_dynamic_symtab (bfd *abfd)
482 {
483 asymbol **sy = NULL;
484 long storage;
485
486 storage = bfd_get_dynamic_symtab_upper_bound (abfd);
487 if (storage < 0)
488 {
489 if (!(bfd_get_file_flags (abfd) & DYNAMIC))
490 {
491 non_fatal (_("%s: not a dynamic object"), bfd_get_filename (abfd));
492 dynsymcount = 0;
493 return NULL;
494 }
495
496 bfd_fatal (bfd_get_filename (abfd));
497 }
498 if (storage)
499 sy = (asymbol **) xmalloc (storage);
500
501 dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, sy);
502 if (dynsymcount < 0)
503 bfd_fatal (bfd_get_filename (abfd));
504 return sy;
505 }
506
507 /* Filter out (in place) symbols that are useless for disassembly.
508 COUNT is the number of elements in SYMBOLS.
509 Return the number of useful symbols. */
510
511 static long
512 remove_useless_symbols (asymbol **symbols, long count)
513 {
514 asymbol **in_ptr = symbols, **out_ptr = symbols;
515
516 while (--count >= 0)
517 {
518 asymbol *sym = *in_ptr++;
519
520 if (sym->name == NULL || sym->name[0] == '\0')
521 continue;
522 if (sym->flags & (BSF_DEBUGGING | BSF_SECTION_SYM))
523 continue;
524 if (bfd_is_und_section (sym->section)
525 || bfd_is_com_section (sym->section))
526 continue;
527
528 *out_ptr++ = sym;
529 }
530 return out_ptr - symbols;
531 }
532
533 /* Sort symbols into value order. */
534
535 static int
536 compare_symbols (const void *ap, const void *bp)
537 {
538 const asymbol *a = * (const asymbol **) ap;
539 const asymbol *b = * (const asymbol **) bp;
540 const char *an;
541 const char *bn;
542 size_t anl;
543 size_t bnl;
544 bfd_boolean af;
545 bfd_boolean bf;
546 flagword aflags;
547 flagword bflags;
548
549 if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
550 return 1;
551 else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
552 return -1;
553
554 if (a->section > b->section)
555 return 1;
556 else if (a->section < b->section)
557 return -1;
558
559 an = bfd_asymbol_name (a);
560 bn = bfd_asymbol_name (b);
561 anl = strlen (an);
562 bnl = strlen (bn);
563
564 /* The symbols gnu_compiled and gcc2_compiled convey no real
565 information, so put them after other symbols with the same value. */
566 af = (strstr (an, "gnu_compiled") != NULL
567 || strstr (an, "gcc2_compiled") != NULL);
568 bf = (strstr (bn, "gnu_compiled") != NULL
569 || strstr (bn, "gcc2_compiled") != NULL);
570
571 if (af && ! bf)
572 return 1;
573 if (! af && bf)
574 return -1;
575
576 /* We use a heuristic for the file name, to try to sort it after
577 more useful symbols. It may not work on non Unix systems, but it
578 doesn't really matter; the only difference is precisely which
579 symbol names get printed. */
580
581 #define file_symbol(s, sn, snl) \
582 (((s)->flags & BSF_FILE) != 0 \
583 || ((sn)[(snl) - 2] == '.' \
584 && ((sn)[(snl) - 1] == 'o' \
585 || (sn)[(snl) - 1] == 'a')))
586
587 af = file_symbol (a, an, anl);
588 bf = file_symbol (b, bn, bnl);
589
590 if (af && ! bf)
591 return 1;
592 if (! af && bf)
593 return -1;
594
595 /* Try to sort global symbols before local symbols before function
596 symbols before debugging symbols. */
597
598 aflags = a->flags;
599 bflags = b->flags;
600
601 if ((aflags & BSF_DEBUGGING) != (bflags & BSF_DEBUGGING))
602 {
603 if ((aflags & BSF_DEBUGGING) != 0)
604 return 1;
605 else
606 return -1;
607 }
608 if ((aflags & BSF_FUNCTION) != (bflags & BSF_FUNCTION))
609 {
610 if ((aflags & BSF_FUNCTION) != 0)
611 return -1;
612 else
613 return 1;
614 }
615 if ((aflags & BSF_LOCAL) != (bflags & BSF_LOCAL))
616 {
617 if ((aflags & BSF_LOCAL) != 0)
618 return 1;
619 else
620 return -1;
621 }
622 if ((aflags & BSF_GLOBAL) != (bflags & BSF_GLOBAL))
623 {
624 if ((aflags & BSF_GLOBAL) != 0)
625 return -1;
626 else
627 return 1;
628 }
629
630 /* Symbols that start with '.' might be section names, so sort them
631 after symbols that don't start with '.'. */
632 if (an[0] == '.' && bn[0] != '.')
633 return 1;
634 if (an[0] != '.' && bn[0] == '.')
635 return -1;
636
637 /* Finally, if we can't distinguish them in any other way, try to
638 get consistent results by sorting the symbols by name. */
639 return strcmp (an, bn);
640 }
641
642 /* Sort relocs into address order. */
643
644 static int
645 compare_relocs (const void *ap, const void *bp)
646 {
647 const arelent *a = * (const arelent **) ap;
648 const arelent *b = * (const arelent **) bp;
649
650 if (a->address > b->address)
651 return 1;
652 else if (a->address < b->address)
653 return -1;
654
655 /* So that associated relocations tied to the same address show up
656 in the correct order, we don't do any further sorting. */
657 if (a > b)
658 return 1;
659 else if (a < b)
660 return -1;
661 else
662 return 0;
663 }
664
665 /* Print an address (VMA) to the output stream in INFO.
666 If SKIP_ZEROES is TRUE, omit leading zeroes. */
667
668 static void
669 objdump_print_value (bfd_vma vma, struct disassemble_info *info,
670 bfd_boolean skip_zeroes)
671 {
672 char buf[30];
673 char *p;
674 struct objdump_disasm_info *aux;
675
676 aux = (struct objdump_disasm_info *) info->application_data;
677 bfd_sprintf_vma (aux->abfd, buf, vma);
678 if (! skip_zeroes)
679 p = buf;
680 else
681 {
682 for (p = buf; *p == '0'; ++p)
683 ;
684 if (*p == '\0')
685 --p;
686 }
687 (*info->fprintf_func) (info->stream, "%s", p);
688 }
689
690 /* Print the name of a symbol. */
691
692 static void
693 objdump_print_symname (bfd *abfd, struct disassemble_info *info,
694 asymbol *sym)
695 {
696 char *alloc;
697 const char *name;
698
699 alloc = NULL;
700 name = bfd_asymbol_name (sym);
701 if (do_demangle && name[0] != '\0')
702 {
703 /* Demangle the name. */
704 alloc = bfd_demangle (abfd, name, DMGL_ANSI | DMGL_PARAMS);
705 if (alloc != NULL)
706 name = alloc;
707 }
708
709 if (info != NULL)
710 (*info->fprintf_func) (info->stream, "%s", name);
711 else
712 printf ("%s", name);
713
714 if (alloc != NULL)
715 free (alloc);
716 }
717
718 /* Locate a symbol given a bfd and a section (from INFO->application_data),
719 and a VMA. If INFO->application_data->require_sec is TRUE, then always
720 require the symbol to be in the section. Returns NULL if there is no
721 suitable symbol. If PLACE is not NULL, then *PLACE is set to the index
722 of the symbol in sorted_syms. */
723
724 static asymbol *
725 find_symbol_for_address (bfd_vma vma,
726 struct disassemble_info *info,
727 long *place)
728 {
729 /* @@ Would it speed things up to cache the last two symbols returned,
730 and maybe their address ranges? For many processors, only one memory
731 operand can be present at a time, so the 2-entry cache wouldn't be
732 constantly churned by code doing heavy memory accesses. */
733
734 /* Indices in `sorted_syms'. */
735 long min = 0;
736 long max = sorted_symcount;
737 long thisplace;
738 struct objdump_disasm_info *aux;
739 bfd *abfd;
740 asection *sec;
741 unsigned int opb;
742 bfd_boolean want_section;
743
744 if (sorted_symcount < 1)
745 return NULL;
746
747 aux = (struct objdump_disasm_info *) info->application_data;
748 abfd = aux->abfd;
749 sec = aux->sec;
750 opb = info->octets_per_byte;
751
752 /* Perform a binary search looking for the closest symbol to the
753 required value. We are searching the range (min, max]. */
754 while (min + 1 < max)
755 {
756 asymbol *sym;
757
758 thisplace = (max + min) / 2;
759 sym = sorted_syms[thisplace];
760
761 if (bfd_asymbol_value (sym) > vma)
762 max = thisplace;
763 else if (bfd_asymbol_value (sym) < vma)
764 min = thisplace;
765 else
766 {
767 min = thisplace;
768 break;
769 }
770 }
771
772 /* The symbol we want is now in min, the low end of the range we
773 were searching. If there are several symbols with the same
774 value, we want the first one. */
775 thisplace = min;
776 while (thisplace > 0
777 && (bfd_asymbol_value (sorted_syms[thisplace])
778 == bfd_asymbol_value (sorted_syms[thisplace - 1])))
779 --thisplace;
780
781 /* Prefer a symbol in the current section if we have multple symbols
782 with the same value, as can occur with overlays or zero size
783 sections. */
784 min = thisplace;
785 while (min < max
786 && (bfd_asymbol_value (sorted_syms[min])
787 == bfd_asymbol_value (sorted_syms[thisplace])))
788 {
789 if (sorted_syms[min]->section == sec
790 && info->symbol_is_valid (sorted_syms[min], info))
791 {
792 thisplace = min;
793
794 if (place != NULL)
795 *place = thisplace;
796
797 return sorted_syms[thisplace];
798 }
799 ++min;
800 }
801
802 /* If the file is relocatable, and the symbol could be from this
803 section, prefer a symbol from this section over symbols from
804 others, even if the other symbol's value might be closer.
805
806 Note that this may be wrong for some symbol references if the
807 sections have overlapping memory ranges, but in that case there's
808 no way to tell what's desired without looking at the relocation
809 table.
810
811 Also give the target a chance to reject symbols. */
812 want_section = (aux->require_sec
813 || ((abfd->flags & HAS_RELOC) != 0
814 && vma >= bfd_get_section_vma (abfd, sec)
815 && vma < (bfd_get_section_vma (abfd, sec)
816 + bfd_section_size (abfd, sec) / opb)));
817 if ((sorted_syms[thisplace]->section != sec && want_section)
818 || !info->symbol_is_valid (sorted_syms[thisplace], info))
819 {
820 long i;
821 long newplace = sorted_symcount;
822
823 for (i = min - 1; i >= 0; i--)
824 {
825 if ((sorted_syms[i]->section == sec || !want_section)
826 && info->symbol_is_valid (sorted_syms[i], info))
827 {
828 if (newplace == sorted_symcount)
829 newplace = i;
830
831 if (bfd_asymbol_value (sorted_syms[i])
832 != bfd_asymbol_value (sorted_syms[newplace]))
833 break;
834
835 /* Remember this symbol and keep searching until we reach
836 an earlier address. */
837 newplace = i;
838 }
839 }
840
841 if (newplace != sorted_symcount)
842 thisplace = newplace;
843 else
844 {
845 /* We didn't find a good symbol with a smaller value.
846 Look for one with a larger value. */
847 for (i = thisplace + 1; i < sorted_symcount; i++)
848 {
849 if ((sorted_syms[i]->section == sec || !want_section)
850 && info->symbol_is_valid (sorted_syms[i], info))
851 {
852 thisplace = i;
853 break;
854 }
855 }
856 }
857
858 if ((sorted_syms[thisplace]->section != sec && want_section)
859 || !info->symbol_is_valid (sorted_syms[thisplace], info))
860 /* There is no suitable symbol. */
861 return NULL;
862 }
863
864 if (place != NULL)
865 *place = thisplace;
866
867 return sorted_syms[thisplace];
868 }
869
870 /* Print an address and the offset to the nearest symbol. */
871
872 static void
873 objdump_print_addr_with_sym (bfd *abfd, asection *sec, asymbol *sym,
874 bfd_vma vma, struct disassemble_info *info,
875 bfd_boolean skip_zeroes)
876 {
877 objdump_print_value (vma, info, skip_zeroes);
878
879 if (sym == NULL)
880 {
881 bfd_vma secaddr;
882
883 (*info->fprintf_func) (info->stream, " <%s",
884 bfd_get_section_name (abfd, sec));
885 secaddr = bfd_get_section_vma (abfd, sec);
886 if (vma < secaddr)
887 {
888 (*info->fprintf_func) (info->stream, "-0x");
889 objdump_print_value (secaddr - vma, info, TRUE);
890 }
891 else if (vma > secaddr)
892 {
893 (*info->fprintf_func) (info->stream, "+0x");
894 objdump_print_value (vma - secaddr, info, TRUE);
895 }
896 (*info->fprintf_func) (info->stream, ">");
897 }
898 else
899 {
900 (*info->fprintf_func) (info->stream, " <");
901 objdump_print_symname (abfd, info, sym);
902 if (bfd_asymbol_value (sym) > vma)
903 {
904 (*info->fprintf_func) (info->stream, "-0x");
905 objdump_print_value (bfd_asymbol_value (sym) - vma, info, TRUE);
906 }
907 else if (vma > bfd_asymbol_value (sym))
908 {
909 (*info->fprintf_func) (info->stream, "+0x");
910 objdump_print_value (vma - bfd_asymbol_value (sym), info, TRUE);
911 }
912 (*info->fprintf_func) (info->stream, ">");
913 }
914
915 if (display_file_offsets)
916 info->fprintf_func (info->stream, _(" (File Offset: 0x%lx)"),
917 (long int)(sec->filepos + (vma - sec->vma)));
918 }
919
920 /* Print an address (VMA), symbolically if possible.
921 If SKIP_ZEROES is TRUE, don't output leading zeroes. */
922
923 static void
924 objdump_print_addr (bfd_vma vma,
925 struct disassemble_info *info,
926 bfd_boolean skip_zeroes)
927 {
928 struct objdump_disasm_info *aux;
929 asymbol *sym = NULL;
930 bfd_boolean skip_find = FALSE;
931
932 aux = (struct objdump_disasm_info *) info->application_data;
933
934 if (sorted_symcount < 1)
935 {
936 (*info->fprintf_func) (info->stream, "0x");
937 objdump_print_value (vma, info, skip_zeroes);
938
939 if (display_file_offsets)
940 info->fprintf_func (info->stream, _(" (File Offset: 0x%lx)"),
941 (long int)(aux->sec->filepos + (vma - aux->sec->vma)));
942 return;
943 }
944
945 if (aux->reloc != NULL
946 && aux->reloc->sym_ptr_ptr != NULL
947 && * aux->reloc->sym_ptr_ptr != NULL)
948 {
949 sym = * aux->reloc->sym_ptr_ptr;
950
951 /* Adjust the vma to the reloc. */
952 vma += bfd_asymbol_value (sym);
953
954 if (bfd_is_und_section (bfd_get_section (sym)))
955 skip_find = TRUE;
956 }
957
958 if (!skip_find)
959 sym = find_symbol_for_address (vma, info, NULL);
960
961 objdump_print_addr_with_sym (aux->abfd, aux->sec, sym, vma, info,
962 skip_zeroes);
963 }
964
965 /* Print VMA to INFO. This function is passed to the disassembler
966 routine. */
967
968 static void
969 objdump_print_address (bfd_vma vma, struct disassemble_info *info)
970 {
971 objdump_print_addr (vma, info, ! prefix_addresses);
972 }
973
974 /* Determine if the given address has a symbol associated with it. */
975
976 static int
977 objdump_symbol_at_address (bfd_vma vma, struct disassemble_info * info)
978 {
979 asymbol * sym;
980
981 sym = find_symbol_for_address (vma, info, NULL);
982
983 return (sym != NULL && (bfd_asymbol_value (sym) == vma));
984 }
985
986 /* Hold the last function name and the last line number we displayed
987 in a disassembly. */
988
989 static char *prev_functionname;
990 static unsigned int prev_line;
991
992 /* We keep a list of all files that we have seen when doing a
993 disassembly with source, so that we know how much of the file to
994 display. This can be important for inlined functions. */
995
996 struct print_file_list
997 {
998 struct print_file_list *next;
999 const char *filename;
1000 const char *modname;
1001 const char *map;
1002 size_t mapsize;
1003 const char **linemap;
1004 unsigned maxline;
1005 unsigned last_line;
1006 int first;
1007 };
1008
1009 static struct print_file_list *print_files;
1010
1011 /* The number of preceding context lines to show when we start
1012 displaying a file for the first time. */
1013
1014 #define SHOW_PRECEDING_CONTEXT_LINES (5)
1015
1016 /* Read a complete file into memory. */
1017
1018 static const char *
1019 slurp_file (const char *fn, size_t *size)
1020 {
1021 #ifdef HAVE_MMAP
1022 int ps = getpagesize ();
1023 size_t msize;
1024 #endif
1025 const char *map;
1026 struct stat st;
1027 int fd = open (fn, O_RDONLY | O_BINARY);
1028
1029 if (fd < 0)
1030 return NULL;
1031 if (fstat (fd, &st) < 0)
1032 return NULL;
1033 *size = st.st_size;
1034 #ifdef HAVE_MMAP
1035 msize = (*size + ps - 1) & ~(ps - 1);
1036 map = mmap (NULL, msize, PROT_READ, MAP_SHARED, fd, 0);
1037 if (map != (char *)-1L)
1038 {
1039 close(fd);
1040 return map;
1041 }
1042 #endif
1043 map = (const char *) malloc (*size);
1044 if (!map || (size_t) read (fd, (char *)map, *size) != *size)
1045 {
1046 free ((void *)map);
1047 map = NULL;
1048 }
1049 close (fd);
1050 return map;
1051 }
1052
1053 #define line_map_decrease 5
1054
1055 /* Precompute array of lines for a mapped file. */
1056
1057 static const char **
1058 index_file (const char *map, size_t size, unsigned int *maxline)
1059 {
1060 const char *p, *lstart, *end;
1061 int chars_per_line = 45; /* First iteration will use 40. */
1062 unsigned int lineno;
1063 const char **linemap = NULL;
1064 unsigned long line_map_size = 0;
1065
1066 lineno = 0;
1067 lstart = map;
1068 end = map + size;
1069
1070 for (p = map; p < end; p++)
1071 {
1072 if (*p == '\n')
1073 {
1074 if (p + 1 < end && p[1] == '\r')
1075 p++;
1076 }
1077 else if (*p == '\r')
1078 {
1079 if (p + 1 < end && p[1] == '\n')
1080 p++;
1081 }
1082 else
1083 continue;
1084
1085 /* End of line found. */
1086
1087 if (linemap == NULL || line_map_size < lineno + 1)
1088 {
1089 unsigned long newsize;
1090
1091 chars_per_line -= line_map_decrease;
1092 if (chars_per_line <= 1)
1093 chars_per_line = 1;
1094 line_map_size = size / chars_per_line + 1;
1095 if (line_map_size < lineno + 1)
1096 line_map_size = lineno + 1;
1097 newsize = line_map_size * sizeof (char *);
1098 linemap = (const char **) xrealloc (linemap, newsize);
1099 }
1100
1101 linemap[lineno++] = lstart;
1102 lstart = p + 1;
1103 }
1104
1105 *maxline = lineno;
1106 return linemap;
1107 }
1108
1109 /* Tries to open MODNAME, and if successful adds a node to print_files
1110 linked list and returns that node. Returns NULL on failure. */
1111
1112 static struct print_file_list *
1113 try_print_file_open (const char *origname, const char *modname)
1114 {
1115 struct print_file_list *p;
1116
1117 p = (struct print_file_list *) xmalloc (sizeof (struct print_file_list));
1118
1119 p->map = slurp_file (modname, &p->mapsize);
1120 if (p->map == NULL)
1121 {
1122 free (p);
1123 return NULL;
1124 }
1125
1126 p->linemap = index_file (p->map, p->mapsize, &p->maxline);
1127 p->last_line = 0;
1128 p->filename = origname;
1129 p->modname = modname;
1130 p->next = print_files;
1131 p->first = 1;
1132 print_files = p;
1133 return p;
1134 }
1135
1136 /* If the the source file, as described in the symtab, is not found
1137 try to locate it in one of the paths specified with -I
1138 If found, add location to print_files linked list. */
1139
1140 static struct print_file_list *
1141 update_source_path (const char *filename)
1142 {
1143 struct print_file_list *p;
1144 const char *fname;
1145 int i;
1146
1147 if (filename == NULL)
1148 return NULL;
1149
1150 p = try_print_file_open (filename, filename);
1151 if (p != NULL)
1152 return p;
1153
1154 if (include_path_count == 0)
1155 return NULL;
1156
1157 /* Get the name of the file. */
1158 fname = strrchr (filename, '/');
1159 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
1160 {
1161 /* We could have a mixed forward/back slash case. */
1162 char *backslash = strrchr (filename, '\\');
1163 if (fname == NULL || (backslash != NULL && backslash > fname))
1164 fname = backslash;
1165 if (fname == NULL && filename[0] != '\0' && filename[1] == ':')
1166 fname = filename + 1;
1167 }
1168 #endif
1169 if (fname == NULL)
1170 fname = filename;
1171 else
1172 ++fname;
1173
1174 /* If file exists under a new path, we need to add it to the list
1175 so that show_line knows about it. */
1176 for (i = 0; i < include_path_count; i++)
1177 {
1178 char *modname = concat (include_paths[i], "/", fname, (const char *) 0);
1179
1180 p = try_print_file_open (filename, modname);
1181 if (p)
1182 return p;
1183
1184 free (modname);
1185 }
1186
1187 return NULL;
1188 }
1189
1190 /* Print a source file line. */
1191
1192 static void
1193 print_line (struct print_file_list *p, unsigned int line)
1194 {
1195 const char *l;
1196 size_t len;
1197
1198 --line;
1199 if (line >= p->maxline)
1200 return;
1201 l = p->linemap [line];
1202 /* Test fwrite return value to quiet glibc warning. */
1203 len = strcspn (l, "\n\r");
1204 if (len == 0 || fwrite (l, len, 1, stdout) == 1)
1205 putchar ('\n');
1206 }
1207
1208 /* Print a range of source code lines. */
1209
1210 static void
1211 dump_lines (struct print_file_list *p, unsigned int start, unsigned int end)
1212 {
1213 if (p->map == NULL)
1214 return;
1215 while (start <= end)
1216 {
1217 print_line (p, start);
1218 start++;
1219 }
1220 }
1221
1222 /* Show the line number, or the source line, in a disassembly
1223 listing. */
1224
1225 static void
1226 show_line (bfd *abfd, asection *section, bfd_vma addr_offset)
1227 {
1228 const char *filename;
1229 const char *functionname;
1230 unsigned int line;
1231 bfd_boolean reloc;
1232
1233 if (! with_line_numbers && ! with_source_code)
1234 return;
1235
1236 if (! bfd_find_nearest_line (abfd, section, syms, addr_offset, &filename,
1237 &functionname, &line))
1238 return;
1239
1240 if (filename != NULL && *filename == '\0')
1241 filename = NULL;
1242 if (functionname != NULL && *functionname == '\0')
1243 functionname = NULL;
1244
1245 if (filename
1246 && IS_ABSOLUTE_PATH (filename)
1247 && prefix)
1248 {
1249 char *path_up;
1250 const char *fname = filename;
1251 char *path = (char *) alloca (prefix_length + PATH_MAX + 1);
1252
1253 if (prefix_length)
1254 memcpy (path, prefix, prefix_length);
1255 path_up = path + prefix_length;
1256
1257 /* Build relocated filename, stripping off leading directories
1258 from the initial filename if requested. */
1259 if (prefix_strip > 0)
1260 {
1261 int level = 0;
1262 const char *s;
1263
1264 /* Skip selected directory levels. */
1265 for (s = fname + 1; *s != '\0' && level < prefix_strip; s++)
1266 if (IS_DIR_SEPARATOR(*s))
1267 {
1268 fname = s;
1269 level++;
1270 }
1271 }
1272
1273 /* Update complete filename. */
1274 strncpy (path_up, fname, PATH_MAX);
1275 path_up[PATH_MAX] = '\0';
1276
1277 filename = path;
1278 reloc = TRUE;
1279 }
1280 else
1281 reloc = FALSE;
1282
1283 if (with_line_numbers)
1284 {
1285 if (functionname != NULL
1286 && (prev_functionname == NULL
1287 || strcmp (functionname, prev_functionname) != 0))
1288 printf ("%s():\n", functionname);
1289 if (line > 0 && line != prev_line)
1290 printf ("%s:%u\n", filename == NULL ? "???" : filename, line);
1291 }
1292
1293 if (with_source_code
1294 && filename != NULL
1295 && line > 0)
1296 {
1297 struct print_file_list **pp, *p;
1298 unsigned l;
1299
1300 for (pp = &print_files; *pp != NULL; pp = &(*pp)->next)
1301 if (strcmp ((*pp)->filename, filename) == 0)
1302 break;
1303 p = *pp;
1304
1305 if (p == NULL)
1306 {
1307 if (reloc)
1308 filename = xstrdup (filename);
1309 p = update_source_path (filename);
1310 }
1311
1312 if (p != NULL && line != p->last_line)
1313 {
1314 if (file_start_context && p->first)
1315 l = 1;
1316 else
1317 {
1318 l = line - SHOW_PRECEDING_CONTEXT_LINES;
1319 if (l >= line)
1320 l = 1;
1321 if (p->last_line >= l && p->last_line <= line)
1322 l = p->last_line + 1;
1323 }
1324 dump_lines (p, l, line);
1325 p->last_line = line;
1326 p->first = 0;
1327 }
1328 }
1329
1330 if (functionname != NULL
1331 && (prev_functionname == NULL
1332 || strcmp (functionname, prev_functionname) != 0))
1333 {
1334 if (prev_functionname != NULL)
1335 free (prev_functionname);
1336 prev_functionname = (char *) xmalloc (strlen (functionname) + 1);
1337 strcpy (prev_functionname, functionname);
1338 }
1339
1340 if (line > 0 && line != prev_line)
1341 prev_line = line;
1342 }
1343
1344 /* Pseudo FILE object for strings. */
1345 typedef struct
1346 {
1347 char *buffer;
1348 size_t pos;
1349 size_t alloc;
1350 } SFILE;
1351
1352 /* sprintf to a "stream". */
1353
1354 static int ATTRIBUTE_PRINTF_2
1355 objdump_sprintf (SFILE *f, const char *format, ...)
1356 {
1357 size_t n;
1358 va_list args;
1359
1360 while (1)
1361 {
1362 size_t space = f->alloc - f->pos;
1363
1364 va_start (args, format);
1365 n = vsnprintf (f->buffer + f->pos, space, format, args);
1366 va_end (args);
1367
1368 if (space > n)
1369 break;
1370
1371 f->alloc = (f->alloc + n) * 2;
1372 f->buffer = (char *) xrealloc (f->buffer, f->alloc);
1373 }
1374 f->pos += n;
1375
1376 return n;
1377 }
1378
1379 /* The number of zeroes we want to see before we start skipping them.
1380 The number is arbitrarily chosen. */
1381
1382 #define DEFAULT_SKIP_ZEROES 8
1383
1384 /* The number of zeroes to skip at the end of a section. If the
1385 number of zeroes at the end is between SKIP_ZEROES_AT_END and
1386 SKIP_ZEROES, they will be disassembled. If there are fewer than
1387 SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic
1388 attempt to avoid disassembling zeroes inserted by section
1389 alignment. */
1390
1391 #define DEFAULT_SKIP_ZEROES_AT_END 3
1392
1393 /* Disassemble some data in memory between given values. */
1394
1395 static void
1396 disassemble_bytes (struct disassemble_info * info,
1397 disassembler_ftype disassemble_fn,
1398 bfd_boolean insns,
1399 bfd_byte * data,
1400 bfd_vma start_offset,
1401 bfd_vma stop_offset,
1402 bfd_vma rel_offset,
1403 arelent *** relppp,
1404 arelent ** relppend)
1405 {
1406 struct objdump_disasm_info *aux;
1407 asection *section;
1408 int octets_per_line;
1409 bfd_boolean done_dot;
1410 int skip_addr_chars;
1411 bfd_vma addr_offset;
1412 unsigned int opb = info->octets_per_byte;
1413 unsigned int skip_zeroes = info->skip_zeroes;
1414 unsigned int skip_zeroes_at_end = info->skip_zeroes_at_end;
1415 int octets = opb;
1416 SFILE sfile;
1417
1418 aux = (struct objdump_disasm_info *) info->application_data;
1419 section = aux->sec;
1420
1421 sfile.alloc = 120;
1422 sfile.buffer = (char *) xmalloc (sfile.alloc);
1423 sfile.pos = 0;
1424
1425 if (insn_width)
1426 octets_per_line = insn_width;
1427 else if (insns)
1428 octets_per_line = 4;
1429 else
1430 octets_per_line = 16;
1431
1432 /* Figure out how many characters to skip at the start of an
1433 address, to make the disassembly look nicer. We discard leading
1434 zeroes in chunks of 4, ensuring that there is always a leading
1435 zero remaining. */
1436 skip_addr_chars = 0;
1437 if (! prefix_addresses)
1438 {
1439 char buf[30];
1440
1441 bfd_sprintf_vma (aux->abfd, buf, section->vma + section->size / opb);
1442
1443 while (buf[skip_addr_chars] == '0')
1444 ++skip_addr_chars;
1445
1446 /* Don't discard zeros on overflow. */
1447 if (buf[skip_addr_chars] == '\0' && section->vma != 0)
1448 skip_addr_chars = 0;
1449
1450 if (skip_addr_chars != 0)
1451 skip_addr_chars = (skip_addr_chars - 1) & -4;
1452 }
1453
1454 info->insn_info_valid = 0;
1455
1456 done_dot = FALSE;
1457 addr_offset = start_offset;
1458 while (addr_offset < stop_offset)
1459 {
1460 bfd_vma z;
1461 bfd_boolean need_nl = FALSE;
1462 int previous_octets;
1463
1464 /* Remember the length of the previous instruction. */
1465 previous_octets = octets;
1466 octets = 0;
1467
1468 /* If we see more than SKIP_ZEROES octets of zeroes, we just
1469 print `...'. */
1470 for (z = addr_offset * opb; z < stop_offset * opb; z++)
1471 if (data[z] != 0)
1472 break;
1473 if (! disassemble_zeroes
1474 && (info->insn_info_valid == 0
1475 || info->branch_delay_insns == 0)
1476 && (z - addr_offset * opb >= skip_zeroes
1477 || (z == stop_offset * opb &&
1478 z - addr_offset * opb < skip_zeroes_at_end)))
1479 {
1480 /* If there are more nonzero octets to follow, we only skip
1481 zeroes in multiples of 4, to try to avoid running over
1482 the start of an instruction which happens to start with
1483 zero. */
1484 if (z != stop_offset * opb)
1485 z = addr_offset * opb + ((z - addr_offset * opb) &~ 3);
1486
1487 octets = z - addr_offset * opb;
1488
1489 /* If we are going to display more data, and we are displaying
1490 file offsets, then tell the user how many zeroes we skip
1491 and the file offset from where we resume dumping. */
1492 if (display_file_offsets && ((addr_offset + (octets / opb)) < stop_offset))
1493 printf ("\t... (skipping %d zeroes, resuming at file offset: 0x%lx)\n",
1494 octets / opb,
1495 (unsigned long) (section->filepos
1496 + (addr_offset + (octets / opb))));
1497 else
1498 printf ("\t...\n");
1499 }
1500 else
1501 {
1502 char buf[50];
1503 int bpc = 0;
1504 int pb = 0;
1505
1506 done_dot = FALSE;
1507
1508 if (with_line_numbers || with_source_code)
1509 show_line (aux->abfd, section, addr_offset);
1510
1511 if (! prefix_addresses)
1512 {
1513 char *s;
1514
1515 bfd_sprintf_vma (aux->abfd, buf, section->vma + addr_offset);
1516 for (s = buf + skip_addr_chars; *s == '0'; s++)
1517 *s = ' ';
1518 if (*s == '\0')
1519 *--s = '0';
1520 printf ("%s:\t", buf + skip_addr_chars);
1521 }
1522 else
1523 {
1524 aux->require_sec = TRUE;
1525 objdump_print_address (section->vma + addr_offset, info);
1526 aux->require_sec = FALSE;
1527 putchar (' ');
1528 }
1529
1530 if (insns)
1531 {
1532 sfile.pos = 0;
1533 info->fprintf_func = (fprintf_ftype) objdump_sprintf;
1534 info->stream = &sfile;
1535 info->bytes_per_line = 0;
1536 info->bytes_per_chunk = 0;
1537 info->flags = disassemble_all ? DISASSEMBLE_DATA : 0;
1538 if (machine)
1539 info->flags |= USER_SPECIFIED_MACHINE_TYPE;
1540
1541 if (info->disassembler_needs_relocs
1542 && (bfd_get_file_flags (aux->abfd) & EXEC_P) == 0
1543 && (bfd_get_file_flags (aux->abfd) & DYNAMIC) == 0
1544 && *relppp < relppend)
1545 {
1546 bfd_signed_vma distance_to_rel;
1547
1548 distance_to_rel = (**relppp)->address
1549 - (rel_offset + addr_offset);
1550
1551 /* Check to see if the current reloc is associated with
1552 the instruction that we are about to disassemble. */
1553 if (distance_to_rel == 0
1554 /* FIXME: This is wrong. We are trying to catch
1555 relocs that are addressed part way through the
1556 current instruction, as might happen with a packed
1557 VLIW instruction. Unfortunately we do not know the
1558 length of the current instruction since we have not
1559 disassembled it yet. Instead we take a guess based
1560 upon the length of the previous instruction. The
1561 proper solution is to have a new target-specific
1562 disassembler function which just returns the length
1563 of an instruction at a given address without trying
1564 to display its disassembly. */
1565 || (distance_to_rel > 0
1566 && distance_to_rel < (bfd_signed_vma) (previous_octets/ opb)))
1567 {
1568 info->flags |= INSN_HAS_RELOC;
1569 aux->reloc = **relppp;
1570 }
1571 else
1572 aux->reloc = NULL;
1573 }
1574
1575 octets = (*disassemble_fn) (section->vma + addr_offset, info);
1576 info->fprintf_func = (fprintf_ftype) fprintf;
1577 info->stream = stdout;
1578 if (insn_width == 0 && info->bytes_per_line != 0)
1579 octets_per_line = info->bytes_per_line;
1580 if (octets < 0)
1581 {
1582 if (sfile.pos)
1583 printf ("%s\n", sfile.buffer);
1584 break;
1585 }
1586 }
1587 else
1588 {
1589 bfd_vma j;
1590
1591 octets = octets_per_line;
1592 if (addr_offset + octets / opb > stop_offset)
1593 octets = (stop_offset - addr_offset) * opb;
1594
1595 for (j = addr_offset * opb; j < addr_offset * opb + octets; ++j)
1596 {
1597 if (ISPRINT (data[j]))
1598 buf[j - addr_offset * opb] = data[j];
1599 else
1600 buf[j - addr_offset * opb] = '.';
1601 }
1602 buf[j - addr_offset * opb] = '\0';
1603 }
1604
1605 if (prefix_addresses
1606 ? show_raw_insn > 0
1607 : show_raw_insn >= 0)
1608 {
1609 bfd_vma j;
1610
1611 /* If ! prefix_addresses and ! wide_output, we print
1612 octets_per_line octets per line. */
1613 pb = octets;
1614 if (pb > octets_per_line && ! prefix_addresses && ! wide_output)
1615 pb = octets_per_line;
1616
1617 if (info->bytes_per_chunk)
1618 bpc = info->bytes_per_chunk;
1619 else
1620 bpc = 1;
1621
1622 for (j = addr_offset * opb; j < addr_offset * opb + pb; j += bpc)
1623 {
1624 int k;
1625
1626 if (bpc > 1 && info->display_endian == BFD_ENDIAN_LITTLE)
1627 {
1628 for (k = bpc - 1; k >= 0; k--)
1629 printf ("%02x", (unsigned) data[j + k]);
1630 putchar (' ');
1631 }
1632 else
1633 {
1634 for (k = 0; k < bpc; k++)
1635 printf ("%02x", (unsigned) data[j + k]);
1636 putchar (' ');
1637 }
1638 }
1639
1640 for (; pb < octets_per_line; pb += bpc)
1641 {
1642 int k;
1643
1644 for (k = 0; k < bpc; k++)
1645 printf (" ");
1646 putchar (' ');
1647 }
1648
1649 /* Separate raw data from instruction by extra space. */
1650 if (insns)
1651 putchar ('\t');
1652 else
1653 printf (" ");
1654 }
1655
1656 if (! insns)
1657 printf ("%s", buf);
1658 else if (sfile.pos)
1659 printf ("%s", sfile.buffer);
1660
1661 if (prefix_addresses
1662 ? show_raw_insn > 0
1663 : show_raw_insn >= 0)
1664 {
1665 while (pb < octets)
1666 {
1667 bfd_vma j;
1668 char *s;
1669
1670 putchar ('\n');
1671 j = addr_offset * opb + pb;
1672
1673 bfd_sprintf_vma (aux->abfd, buf, section->vma + j / opb);
1674 for (s = buf + skip_addr_chars; *s == '0'; s++)
1675 *s = ' ';
1676 if (*s == '\0')
1677 *--s = '0';
1678 printf ("%s:\t", buf + skip_addr_chars);
1679
1680 pb += octets_per_line;
1681 if (pb > octets)
1682 pb = octets;
1683 for (; j < addr_offset * opb + pb; j += bpc)
1684 {
1685 int k;
1686
1687 if (bpc > 1 && info->display_endian == BFD_ENDIAN_LITTLE)
1688 {
1689 for (k = bpc - 1; k >= 0; k--)
1690 printf ("%02x", (unsigned) data[j + k]);
1691 putchar (' ');
1692 }
1693 else
1694 {
1695 for (k = 0; k < bpc; k++)
1696 printf ("%02x", (unsigned) data[j + k]);
1697 putchar (' ');
1698 }
1699 }
1700 }
1701 }
1702
1703 if (!wide_output)
1704 putchar ('\n');
1705 else
1706 need_nl = TRUE;
1707 }
1708
1709 while ((*relppp) < relppend
1710 && (**relppp)->address < rel_offset + addr_offset + octets / opb)
1711 {
1712 if (dump_reloc_info || dump_dynamic_reloc_info)
1713 {
1714 arelent *q;
1715
1716 q = **relppp;
1717
1718 if (wide_output)
1719 putchar ('\t');
1720 else
1721 printf ("\t\t\t");
1722
1723 objdump_print_value (section->vma - rel_offset + q->address,
1724 info, TRUE);
1725
1726 if (q->howto == NULL)
1727 printf (": *unknown*\t");
1728 else if (q->howto->name)
1729 printf (": %s\t", q->howto->name);
1730 else
1731 printf (": %d\t", q->howto->type);
1732
1733 if (q->sym_ptr_ptr == NULL || *q->sym_ptr_ptr == NULL)
1734 printf ("*unknown*");
1735 else
1736 {
1737 const char *sym_name;
1738
1739 sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
1740 if (sym_name != NULL && *sym_name != '\0')
1741 objdump_print_symname (aux->abfd, info, *q->sym_ptr_ptr);
1742 else
1743 {
1744 asection *sym_sec;
1745
1746 sym_sec = bfd_get_section (*q->sym_ptr_ptr);
1747 sym_name = bfd_get_section_name (aux->abfd, sym_sec);
1748 if (sym_name == NULL || *sym_name == '\0')
1749 sym_name = "*unknown*";
1750 printf ("%s", sym_name);
1751 }
1752 }
1753
1754 if (q->addend)
1755 {
1756 printf ("+0x");
1757 objdump_print_value (q->addend, info, TRUE);
1758 }
1759
1760 printf ("\n");
1761 need_nl = FALSE;
1762 }
1763 ++(*relppp);
1764 }
1765
1766 if (need_nl)
1767 printf ("\n");
1768
1769 addr_offset += octets / opb;
1770 }
1771
1772 free (sfile.buffer);
1773 }
1774
1775 static void
1776 disassemble_section (bfd *abfd, asection *section, void *info)
1777 {
1778 const struct elf_backend_data * bed;
1779 bfd_vma sign_adjust = 0;
1780 struct disassemble_info * pinfo = (struct disassemble_info *) info;
1781 struct objdump_disasm_info * paux;
1782 unsigned int opb = pinfo->octets_per_byte;
1783 bfd_byte * data = NULL;
1784 bfd_size_type datasize = 0;
1785 arelent ** rel_pp = NULL;
1786 arelent ** rel_ppstart = NULL;
1787 arelent ** rel_ppend;
1788 unsigned long stop_offset;
1789 asymbol * sym = NULL;
1790 long place = 0;
1791 long rel_count;
1792 bfd_vma rel_offset;
1793 unsigned long addr_offset;
1794
1795 /* Sections that do not contain machine
1796 code are not normally disassembled. */
1797 if (! disassemble_all
1798 && only == NULL
1799 && ((section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
1800 != (SEC_CODE | SEC_HAS_CONTENTS)))
1801 return;
1802
1803 if (! process_section_p (section))
1804 return;
1805
1806 datasize = bfd_get_section_size (section);
1807 if (datasize == 0)
1808 return;
1809
1810 /* Decide which set of relocs to use. Load them if necessary. */
1811 paux = (struct objdump_disasm_info *) pinfo->application_data;
1812 if (paux->dynrelbuf)
1813 {
1814 rel_pp = paux->dynrelbuf;
1815 rel_count = paux->dynrelcount;
1816 /* Dynamic reloc addresses are absolute, non-dynamic are section
1817 relative. REL_OFFSET specifies the reloc address corresponding
1818 to the start of this section. */
1819 rel_offset = section->vma;
1820 }
1821 else
1822 {
1823 rel_count = 0;
1824 rel_pp = NULL;
1825 rel_offset = 0;
1826
1827 if ((section->flags & SEC_RELOC) != 0
1828 && (dump_reloc_info || pinfo->disassembler_needs_relocs))
1829 {
1830 long relsize;
1831
1832 relsize = bfd_get_reloc_upper_bound (abfd, section);
1833 if (relsize < 0)
1834 bfd_fatal (bfd_get_filename (abfd));
1835
1836 if (relsize > 0)
1837 {
1838 rel_ppstart = rel_pp = (arelent **) xmalloc (relsize);
1839 rel_count = bfd_canonicalize_reloc (abfd, section, rel_pp, syms);
1840 if (rel_count < 0)
1841 bfd_fatal (bfd_get_filename (abfd));
1842
1843 /* Sort the relocs by address. */
1844 qsort (rel_pp, rel_count, sizeof (arelent *), compare_relocs);
1845 }
1846 }
1847 }
1848 rel_ppend = rel_pp + rel_count;
1849
1850 data = (bfd_byte *) xmalloc (datasize);
1851
1852 bfd_get_section_contents (abfd, section, data, 0, datasize);
1853
1854 paux->sec = section;
1855 pinfo->buffer = data;
1856 pinfo->buffer_vma = section->vma;
1857 pinfo->buffer_length = datasize;
1858 pinfo->section = section;
1859
1860 if (start_address == (bfd_vma) -1
1861 || start_address < pinfo->buffer_vma)
1862 addr_offset = 0;
1863 else
1864 addr_offset = start_address - pinfo->buffer_vma;
1865
1866 if (stop_address == (bfd_vma) -1)
1867 stop_offset = datasize / opb;
1868 else
1869 {
1870 if (stop_address < pinfo->buffer_vma)
1871 stop_offset = 0;
1872 else
1873 stop_offset = stop_address - pinfo->buffer_vma;
1874 if (stop_offset > pinfo->buffer_length / opb)
1875 stop_offset = pinfo->buffer_length / opb;
1876 }
1877
1878 /* Skip over the relocs belonging to addresses below the
1879 start address. */
1880 while (rel_pp < rel_ppend
1881 && (*rel_pp)->address < rel_offset + addr_offset)
1882 ++rel_pp;
1883
1884 if (addr_offset < stop_offset)
1885 printf (_("\nDisassembly of section %s:\n"), section->name);
1886
1887 /* Find the nearest symbol forwards from our current position. */
1888 paux->require_sec = TRUE;
1889 sym = (asymbol *) find_symbol_for_address (section->vma + addr_offset,
1890 (struct disassemble_info *) info,
1891 &place);
1892 paux->require_sec = FALSE;
1893
1894 /* PR 9774: If the target used signed addresses then we must make
1895 sure that we sign extend the value that we calculate for 'addr'
1896 in the loop below. */
1897 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
1898 && (bed = get_elf_backend_data (abfd)) != NULL
1899 && bed->sign_extend_vma)
1900 sign_adjust = (bfd_vma) 1 << (bed->s->arch_size - 1);
1901
1902 /* Disassemble a block of instructions up to the address associated with
1903 the symbol we have just found. Then print the symbol and find the
1904 next symbol on. Repeat until we have disassembled the entire section
1905 or we have reached the end of the address range we are interested in. */
1906 while (addr_offset < stop_offset)
1907 {
1908 bfd_vma addr;
1909 asymbol *nextsym;
1910 unsigned long nextstop_offset;
1911 bfd_boolean insns;
1912
1913 addr = section->vma + addr_offset;
1914 addr = ((addr & ((sign_adjust << 1) - 1)) ^ sign_adjust) - sign_adjust;
1915
1916 if (sym != NULL && bfd_asymbol_value (sym) <= addr)
1917 {
1918 int x;
1919
1920 for (x = place;
1921 (x < sorted_symcount
1922 && (bfd_asymbol_value (sorted_syms[x]) <= addr));
1923 ++x)
1924 continue;
1925
1926 pinfo->symbols = sorted_syms + place;
1927 pinfo->num_symbols = x - place;
1928 pinfo->symtab_pos = place;
1929 }
1930 else
1931 {
1932 pinfo->symbols = NULL;
1933 pinfo->num_symbols = 0;
1934 pinfo->symtab_pos = -1;
1935 }
1936
1937 if (! prefix_addresses)
1938 {
1939 pinfo->fprintf_func (pinfo->stream, "\n");
1940 objdump_print_addr_with_sym (abfd, section, sym, addr,
1941 pinfo, FALSE);
1942 pinfo->fprintf_func (pinfo->stream, ":\n");
1943 }
1944
1945 if (sym != NULL && bfd_asymbol_value (sym) > addr)
1946 nextsym = sym;
1947 else if (sym == NULL)
1948 nextsym = NULL;
1949 else
1950 {
1951 #define is_valid_next_sym(SYM) \
1952 ((SYM)->section == section \
1953 && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
1954 && pinfo->symbol_is_valid (SYM, pinfo))
1955
1956 /* Search forward for the next appropriate symbol in
1957 SECTION. Note that all the symbols are sorted
1958 together into one big array, and that some sections
1959 may have overlapping addresses. */
1960 while (place < sorted_symcount
1961 && ! is_valid_next_sym (sorted_syms [place]))
1962 ++place;
1963
1964 if (place >= sorted_symcount)
1965 nextsym = NULL;
1966 else
1967 nextsym = sorted_syms[place];
1968 }
1969
1970 if (sym != NULL && bfd_asymbol_value (sym) > addr)
1971 nextstop_offset = bfd_asymbol_value (sym) - section->vma;
1972 else if (nextsym == NULL)
1973 nextstop_offset = stop_offset;
1974 else
1975 nextstop_offset = bfd_asymbol_value (nextsym) - section->vma;
1976
1977 if (nextstop_offset > stop_offset
1978 || nextstop_offset <= addr_offset)
1979 nextstop_offset = stop_offset;
1980
1981 /* If a symbol is explicitly marked as being an object
1982 rather than a function, just dump the bytes without
1983 disassembling them. */
1984 if (disassemble_all
1985 || sym == NULL
1986 || sym->section != section
1987 || bfd_asymbol_value (sym) > addr
1988 || ((sym->flags & BSF_OBJECT) == 0
1989 && (strstr (bfd_asymbol_name (sym), "gnu_compiled")
1990 == NULL)
1991 && (strstr (bfd_asymbol_name (sym), "gcc2_compiled")
1992 == NULL))
1993 || (sym->flags & BSF_FUNCTION) != 0)
1994 insns = TRUE;
1995 else
1996 insns = FALSE;
1997
1998 disassemble_bytes (pinfo, paux->disassemble_fn, insns, data,
1999 addr_offset, nextstop_offset,
2000 rel_offset, &rel_pp, rel_ppend);
2001
2002 addr_offset = nextstop_offset;
2003 sym = nextsym;
2004 }
2005
2006 free (data);
2007
2008 if (rel_ppstart != NULL)
2009 free (rel_ppstart);
2010 }
2011
2012 /* Disassemble the contents of an object file. */
2013
2014 static void
2015 disassemble_data (bfd *abfd)
2016 {
2017 struct disassemble_info disasm_info;
2018 struct objdump_disasm_info aux;
2019 long i;
2020
2021 print_files = NULL;
2022 prev_functionname = NULL;
2023 prev_line = -1;
2024
2025 /* We make a copy of syms to sort. We don't want to sort syms
2026 because that will screw up the relocs. */
2027 sorted_symcount = symcount ? symcount : dynsymcount;
2028 sorted_syms = (asymbol **) xmalloc ((sorted_symcount + synthcount)
2029 * sizeof (asymbol *));
2030 memcpy (sorted_syms, symcount ? syms : dynsyms,
2031 sorted_symcount * sizeof (asymbol *));
2032
2033 sorted_symcount = remove_useless_symbols (sorted_syms, sorted_symcount);
2034
2035 for (i = 0; i < synthcount; ++i)
2036 {
2037 sorted_syms[sorted_symcount] = synthsyms + i;
2038 ++sorted_symcount;
2039 }
2040
2041 /* Sort the symbols into section and symbol order. */
2042 qsort (sorted_syms, sorted_symcount, sizeof (asymbol *), compare_symbols);
2043
2044 init_disassemble_info (&disasm_info, stdout, (fprintf_ftype) fprintf);
2045
2046 disasm_info.application_data = (void *) &aux;
2047 aux.abfd = abfd;
2048 aux.require_sec = FALSE;
2049 aux.dynrelbuf = NULL;
2050 aux.dynrelcount = 0;
2051 aux.reloc = NULL;
2052
2053 disasm_info.print_address_func = objdump_print_address;
2054 disasm_info.symbol_at_address_func = objdump_symbol_at_address;
2055
2056 if (machine != NULL)
2057 {
2058 const bfd_arch_info_type *info = bfd_scan_arch (machine);
2059
2060 if (info == NULL)
2061 fatal (_("Can't use supplied machine %s"), machine);
2062
2063 abfd->arch_info = info;
2064 }
2065
2066 if (endian != BFD_ENDIAN_UNKNOWN)
2067 {
2068 struct bfd_target *xvec;
2069
2070 xvec = (struct bfd_target *) xmalloc (sizeof (struct bfd_target));
2071 memcpy (xvec, abfd->xvec, sizeof (struct bfd_target));
2072 xvec->byteorder = endian;
2073 abfd->xvec = xvec;
2074 }
2075
2076 /* Use libopcodes to locate a suitable disassembler. */
2077 aux.disassemble_fn = disassembler (abfd);
2078 if (!aux.disassemble_fn)
2079 {
2080 non_fatal (_("Can't disassemble for architecture %s\n"),
2081 bfd_printable_arch_mach (bfd_get_arch (abfd), 0));
2082 exit_status = 1;
2083 return;
2084 }
2085
2086 disasm_info.flavour = bfd_get_flavour (abfd);
2087 disasm_info.arch = bfd_get_arch (abfd);
2088 disasm_info.mach = bfd_get_mach (abfd);
2089 disasm_info.disassembler_options = disassembler_options;
2090 disasm_info.octets_per_byte = bfd_octets_per_byte (abfd);
2091 disasm_info.skip_zeroes = DEFAULT_SKIP_ZEROES;
2092 disasm_info.skip_zeroes_at_end = DEFAULT_SKIP_ZEROES_AT_END;
2093 disasm_info.disassembler_needs_relocs = FALSE;
2094
2095 if (bfd_big_endian (abfd))
2096 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_BIG;
2097 else if (bfd_little_endian (abfd))
2098 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_LITTLE;
2099 else
2100 /* ??? Aborting here seems too drastic. We could default to big or little
2101 instead. */
2102 disasm_info.endian = BFD_ENDIAN_UNKNOWN;
2103
2104 /* Allow the target to customize the info structure. */
2105 disassemble_init_for_target (& disasm_info);
2106
2107 /* Pre-load the dynamic relocs if we are going
2108 to be dumping them along with the disassembly. */
2109 if (dump_dynamic_reloc_info)
2110 {
2111 long relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2112
2113 if (relsize < 0)
2114 bfd_fatal (bfd_get_filename (abfd));
2115
2116 if (relsize > 0)
2117 {
2118 aux.dynrelbuf = (arelent **) xmalloc (relsize);
2119 aux.dynrelcount = bfd_canonicalize_dynamic_reloc (abfd,
2120 aux.dynrelbuf,
2121 dynsyms);
2122 if (aux.dynrelcount < 0)
2123 bfd_fatal (bfd_get_filename (abfd));
2124
2125 /* Sort the relocs by address. */
2126 qsort (aux.dynrelbuf, aux.dynrelcount, sizeof (arelent *),
2127 compare_relocs);
2128 }
2129 }
2130 disasm_info.symtab = sorted_syms;
2131 disasm_info.symtab_size = sorted_symcount;
2132
2133 bfd_map_over_sections (abfd, disassemble_section, & disasm_info);
2134
2135 if (aux.dynrelbuf != NULL)
2136 free (aux.dynrelbuf);
2137 free (sorted_syms);
2138 }
2139 \f
2140 static int
2141 load_specific_debug_section (enum dwarf_section_display_enum debug,
2142 asection *sec, void *file)
2143 {
2144 struct dwarf_section *section = &debug_displays [debug].section;
2145 bfd *abfd = (bfd *) file;
2146 bfd_boolean ret;
2147 int section_is_compressed;
2148
2149 /* If it is already loaded, do nothing. */
2150 if (section->start != NULL)
2151 return 1;
2152
2153 section_is_compressed = section->name == section->compressed_name;
2154
2155 section->address = 0;
2156 section->size = bfd_get_section_size (sec);
2157 section->start = (unsigned char *) xmalloc (section->size);
2158
2159 if (is_relocatable && debug_displays [debug].relocate)
2160 ret = bfd_simple_get_relocated_section_contents (abfd,
2161 sec,
2162 section->start,
2163 syms) != NULL;
2164 else
2165 ret = bfd_get_section_contents (abfd, sec, section->start, 0,
2166 section->size);
2167
2168 if (! ret)
2169 {
2170 free_debug_section (debug);
2171 printf (_("\nCan't get contents for section '%s'.\n"),
2172 section->name);
2173 return 0;
2174 }
2175
2176 if (section_is_compressed)
2177 {
2178 bfd_size_type size = section->size;
2179 if (! bfd_uncompress_section_contents (&section->start, &size))
2180 {
2181 free_debug_section (debug);
2182 printf (_("\nCan't uncompress section '%s'.\n"), section->name);
2183 return 0;
2184 }
2185 section->size = size;
2186 }
2187
2188 return 1;
2189 }
2190
2191 int
2192 load_debug_section (enum dwarf_section_display_enum debug, void *file)
2193 {
2194 struct dwarf_section *section = &debug_displays [debug].section;
2195 bfd *abfd = (bfd *) file;
2196 asection *sec;
2197
2198 /* If it is already loaded, do nothing. */
2199 if (section->start != NULL)
2200 return 1;
2201
2202 /* Locate the debug section. */
2203 sec = bfd_get_section_by_name (abfd, section->uncompressed_name);
2204 if (sec != NULL)
2205 section->name = section->uncompressed_name;
2206 else
2207 {
2208 sec = bfd_get_section_by_name (abfd, section->compressed_name);
2209 if (sec != NULL)
2210 section->name = section->compressed_name;
2211 }
2212 if (sec == NULL)
2213 return 0;
2214
2215 return load_specific_debug_section (debug, sec, file);
2216 }
2217
2218 void
2219 free_debug_section (enum dwarf_section_display_enum debug)
2220 {
2221 struct dwarf_section *section = &debug_displays [debug].section;
2222
2223 if (section->start == NULL)
2224 return;
2225
2226 free ((char *) section->start);
2227 section->start = NULL;
2228 section->address = 0;
2229 section->size = 0;
2230 }
2231
2232 static void
2233 dump_dwarf_section (bfd *abfd, asection *section,
2234 void *arg ATTRIBUTE_UNUSED)
2235 {
2236 const char *name = bfd_get_section_name (abfd, section);
2237 const char *match;
2238 int i;
2239
2240 if (CONST_STRNEQ (name, ".gnu.linkonce.wi."))
2241 match = ".debug_info";
2242 else
2243 match = name;
2244
2245 for (i = 0; i < max; i++)
2246 if ((strcmp (debug_displays [i].section.uncompressed_name, match) == 0
2247 || strcmp (debug_displays [i].section.compressed_name, match) == 0)
2248 && debug_displays [i].enabled != NULL
2249 && *debug_displays [i].enabled)
2250 {
2251 struct dwarf_section *sec = &debug_displays [i].section;
2252
2253 if (strcmp (sec->uncompressed_name, match) == 0)
2254 sec->name = sec->uncompressed_name;
2255 else
2256 sec->name = sec->compressed_name;
2257 if (load_specific_debug_section ((enum dwarf_section_display_enum) i,
2258 section, abfd))
2259 {
2260 debug_displays [i].display (sec, abfd);
2261
2262 if (i != info && i != abbrev)
2263 free_debug_section ((enum dwarf_section_display_enum) i);
2264 }
2265 break;
2266 }
2267 }
2268
2269 /* Dump the dwarf debugging information. */
2270
2271 static void
2272 dump_dwarf (bfd *abfd)
2273 {
2274 is_relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2275
2276 /* FIXME: bfd_get_arch_size may return -1. We assume that 64bit
2277 targets will return 64. */
2278 eh_addr_size = bfd_get_arch_size (abfd) == 64 ? 8 : 4;
2279
2280 if (bfd_big_endian (abfd))
2281 byte_get = byte_get_big_endian;
2282 else if (bfd_little_endian (abfd))
2283 byte_get = byte_get_little_endian;
2284 else
2285 abort ();
2286
2287 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
2288 {
2289 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2290 init_dwarf_regnames (bed->elf_machine_code);
2291 }
2292
2293 bfd_map_over_sections (abfd, dump_dwarf_section, NULL);
2294
2295 free_debug_memory ();
2296 }
2297 \f
2298 /* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
2299 it. Return NULL on failure. */
2300
2301 static char *
2302 read_section_stabs (bfd *abfd, const char *sect_name, bfd_size_type *size_ptr)
2303 {
2304 asection *stabsect;
2305 bfd_size_type size;
2306 char *contents;
2307
2308 stabsect = bfd_get_section_by_name (abfd, sect_name);
2309 if (stabsect == NULL)
2310 {
2311 printf (_("No %s section present\n\n"), sect_name);
2312 return FALSE;
2313 }
2314
2315 size = bfd_section_size (abfd, stabsect);
2316 contents = (char *) xmalloc (size);
2317
2318 if (! bfd_get_section_contents (abfd, stabsect, contents, 0, size))
2319 {
2320 non_fatal (_("Reading %s section of %s failed: %s"),
2321 sect_name, bfd_get_filename (abfd),
2322 bfd_errmsg (bfd_get_error ()));
2323 free (contents);
2324 exit_status = 1;
2325 return NULL;
2326 }
2327
2328 *size_ptr = size;
2329
2330 return contents;
2331 }
2332
2333 /* Stabs entries use a 12 byte format:
2334 4 byte string table index
2335 1 byte stab type
2336 1 byte stab other field
2337 2 byte stab desc field
2338 4 byte stab value
2339 FIXME: This will have to change for a 64 bit object format. */
2340
2341 #define STRDXOFF (0)
2342 #define TYPEOFF (4)
2343 #define OTHEROFF (5)
2344 #define DESCOFF (6)
2345 #define VALOFF (8)
2346 #define STABSIZE (12)
2347
2348 /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
2349 using string table section STRSECT_NAME (in `strtab'). */
2350
2351 static void
2352 print_section_stabs (bfd *abfd,
2353 const char *stabsect_name,
2354 unsigned *string_offset_ptr)
2355 {
2356 int i;
2357 unsigned file_string_table_offset = 0;
2358 unsigned next_file_string_table_offset = *string_offset_ptr;
2359 bfd_byte *stabp, *stabs_end;
2360
2361 stabp = stabs;
2362 stabs_end = stabp + stab_size;
2363
2364 printf (_("Contents of %s section:\n\n"), stabsect_name);
2365 printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
2366
2367 /* Loop through all symbols and print them.
2368
2369 We start the index at -1 because there is a dummy symbol on
2370 the front of stabs-in-{coff,elf} sections that supplies sizes. */
2371 for (i = -1; stabp < stabs_end; stabp += STABSIZE, i++)
2372 {
2373 const char *name;
2374 unsigned long strx;
2375 unsigned char type, other;
2376 unsigned short desc;
2377 bfd_vma value;
2378
2379 strx = bfd_h_get_32 (abfd, stabp + STRDXOFF);
2380 type = bfd_h_get_8 (abfd, stabp + TYPEOFF);
2381 other = bfd_h_get_8 (abfd, stabp + OTHEROFF);
2382 desc = bfd_h_get_16 (abfd, stabp + DESCOFF);
2383 value = bfd_h_get_32 (abfd, stabp + VALOFF);
2384
2385 printf ("\n%-6d ", i);
2386 /* Either print the stab name, or, if unnamed, print its number
2387 again (makes consistent formatting for tools like awk). */
2388 name = bfd_get_stab_name (type);
2389 if (name != NULL)
2390 printf ("%-6s", name);
2391 else if (type == N_UNDF)
2392 printf ("HdrSym");
2393 else
2394 printf ("%-6d", type);
2395 printf (" %-6d %-6d ", other, desc);
2396 bfd_printf_vma (abfd, value);
2397 printf (" %-6lu", strx);
2398
2399 /* Symbols with type == 0 (N_UNDF) specify the length of the
2400 string table associated with this file. We use that info
2401 to know how to relocate the *next* file's string table indices. */
2402 if (type == N_UNDF)
2403 {
2404 file_string_table_offset = next_file_string_table_offset;
2405 next_file_string_table_offset += value;
2406 }
2407 else
2408 {
2409 /* Using the (possibly updated) string table offset, print the
2410 string (if any) associated with this symbol. */
2411 if ((strx + file_string_table_offset) < stabstr_size)
2412 printf (" %s", &strtab[strx + file_string_table_offset]);
2413 else
2414 printf (" *");
2415 }
2416 }
2417 printf ("\n\n");
2418 *string_offset_ptr = next_file_string_table_offset;
2419 }
2420
2421 typedef struct
2422 {
2423 const char * section_name;
2424 const char * string_section_name;
2425 unsigned string_offset;
2426 }
2427 stab_section_names;
2428
2429 static void
2430 find_stabs_section (bfd *abfd, asection *section, void *names)
2431 {
2432 int len;
2433 stab_section_names * sought = (stab_section_names *) names;
2434
2435 /* Check for section names for which stabsect_name is a prefix, to
2436 handle .stab.N, etc. */
2437 len = strlen (sought->section_name);
2438
2439 /* If the prefix matches, and the files section name ends with a
2440 nul or a digit, then we match. I.e., we want either an exact
2441 match or a section followed by a number. */
2442 if (strncmp (sought->section_name, section->name, len) == 0
2443 && (section->name[len] == 0
2444 || (section->name[len] == '.' && ISDIGIT (section->name[len + 1]))))
2445 {
2446 if (strtab == NULL)
2447 strtab = read_section_stabs (abfd, sought->string_section_name,
2448 &stabstr_size);
2449
2450 if (strtab)
2451 {
2452 stabs = (bfd_byte *) read_section_stabs (abfd, section->name,
2453 &stab_size);
2454 if (stabs)
2455 print_section_stabs (abfd, section->name, &sought->string_offset);
2456 }
2457 }
2458 }
2459
2460 static void
2461 dump_stabs_section (bfd *abfd, char *stabsect_name, char *strsect_name)
2462 {
2463 stab_section_names s;
2464
2465 s.section_name = stabsect_name;
2466 s.string_section_name = strsect_name;
2467 s.string_offset = 0;
2468
2469 bfd_map_over_sections (abfd, find_stabs_section, & s);
2470
2471 free (strtab);
2472 strtab = NULL;
2473 }
2474
2475 /* Dump the any sections containing stabs debugging information. */
2476
2477 static void
2478 dump_stabs (bfd *abfd)
2479 {
2480 dump_stabs_section (abfd, ".stab", ".stabstr");
2481 dump_stabs_section (abfd, ".stab.excl", ".stab.exclstr");
2482 dump_stabs_section (abfd, ".stab.index", ".stab.indexstr");
2483
2484 /* For Darwin. */
2485 dump_stabs_section (abfd, "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr");
2486
2487 dump_stabs_section (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
2488 }
2489 \f
2490 static void
2491 dump_bfd_header (bfd *abfd)
2492 {
2493 char *comma = "";
2494
2495 printf (_("architecture: %s, "),
2496 bfd_printable_arch_mach (bfd_get_arch (abfd),
2497 bfd_get_mach (abfd)));
2498 printf (_("flags 0x%08x:\n"), abfd->flags);
2499
2500 #define PF(x, y) if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
2501 PF (HAS_RELOC, "HAS_RELOC");
2502 PF (EXEC_P, "EXEC_P");
2503 PF (HAS_LINENO, "HAS_LINENO");
2504 PF (HAS_DEBUG, "HAS_DEBUG");
2505 PF (HAS_SYMS, "HAS_SYMS");
2506 PF (HAS_LOCALS, "HAS_LOCALS");
2507 PF (DYNAMIC, "DYNAMIC");
2508 PF (WP_TEXT, "WP_TEXT");
2509 PF (D_PAGED, "D_PAGED");
2510 PF (BFD_IS_RELAXABLE, "BFD_IS_RELAXABLE");
2511 PF (HAS_LOAD_PAGE, "HAS_LOAD_PAGE");
2512 printf (_("\nstart address 0x"));
2513 bfd_printf_vma (abfd, abfd->start_address);
2514 printf ("\n");
2515 }
2516
2517 \f
2518 static void
2519 dump_bfd_private_header (bfd *abfd)
2520 {
2521 bfd_print_private_bfd_data (abfd, stdout);
2522 }
2523
2524 \f
2525 /* Display a section in hexadecimal format with associated characters.
2526 Each line prefixed by the zero padded address. */
2527
2528 static void
2529 dump_section (bfd *abfd, asection *section, void *dummy ATTRIBUTE_UNUSED)
2530 {
2531 bfd_byte *data = 0;
2532 bfd_size_type datasize;
2533 bfd_size_type addr_offset;
2534 bfd_size_type start_offset;
2535 bfd_size_type stop_offset;
2536 unsigned int opb = bfd_octets_per_byte (abfd);
2537 /* Bytes per line. */
2538 const int onaline = 16;
2539 char buf[64];
2540 int count;
2541 int width;
2542
2543 if ((section->flags & SEC_HAS_CONTENTS) == 0)
2544 return;
2545
2546 if (! process_section_p (section))
2547 return;
2548
2549 if ((datasize = bfd_section_size (abfd, section)) == 0)
2550 return;
2551
2552 /* Compute the address range to display. */
2553 if (start_address == (bfd_vma) -1
2554 || start_address < section->vma)
2555 start_offset = 0;
2556 else
2557 start_offset = start_address - section->vma;
2558
2559 if (stop_address == (bfd_vma) -1)
2560 stop_offset = datasize / opb;
2561 else
2562 {
2563 if (stop_address < section->vma)
2564 stop_offset = 0;
2565 else
2566 stop_offset = stop_address - section->vma;
2567
2568 if (stop_offset > datasize / opb)
2569 stop_offset = datasize / opb;
2570 }
2571
2572 if (start_offset >= stop_offset)
2573 return;
2574
2575 printf (_("Contents of section %s:"), section->name);
2576 if (display_file_offsets)
2577 printf (_(" (Starting at file offset: 0x%lx)"),
2578 (unsigned long) (section->filepos + start_offset));
2579 printf ("\n");
2580
2581 data = (bfd_byte *) xmalloc (datasize);
2582
2583 bfd_get_section_contents (abfd, section, data, 0, datasize);
2584
2585 width = 4;
2586
2587 bfd_sprintf_vma (abfd, buf, start_offset + section->vma);
2588 if (strlen (buf) >= sizeof (buf))
2589 abort ();
2590
2591 count = 0;
2592 while (buf[count] == '0' && buf[count+1] != '\0')
2593 count++;
2594 count = strlen (buf) - count;
2595 if (count > width)
2596 width = count;
2597
2598 bfd_sprintf_vma (abfd, buf, stop_offset + section->vma - 1);
2599 if (strlen (buf) >= sizeof (buf))
2600 abort ();
2601
2602 count = 0;
2603 while (buf[count] == '0' && buf[count+1] != '\0')
2604 count++;
2605 count = strlen (buf) - count;
2606 if (count > width)
2607 width = count;
2608
2609 for (addr_offset = start_offset;
2610 addr_offset < stop_offset; addr_offset += onaline / opb)
2611 {
2612 bfd_size_type j;
2613
2614 bfd_sprintf_vma (abfd, buf, (addr_offset + section->vma));
2615 count = strlen (buf);
2616 if ((size_t) count >= sizeof (buf))
2617 abort ();
2618
2619 putchar (' ');
2620 while (count < width)
2621 {
2622 putchar ('0');
2623 count++;
2624 }
2625 fputs (buf + count - width, stdout);
2626 putchar (' ');
2627
2628 for (j = addr_offset * opb;
2629 j < addr_offset * opb + onaline; j++)
2630 {
2631 if (j < stop_offset * opb)
2632 printf ("%02x", (unsigned) (data[j]));
2633 else
2634 printf (" ");
2635 if ((j & 3) == 3)
2636 printf (" ");
2637 }
2638
2639 printf (" ");
2640 for (j = addr_offset * opb;
2641 j < addr_offset * opb + onaline; j++)
2642 {
2643 if (j >= stop_offset * opb)
2644 printf (" ");
2645 else
2646 printf ("%c", ISPRINT (data[j]) ? data[j] : '.');
2647 }
2648 putchar ('\n');
2649 }
2650 free (data);
2651 }
2652
2653 /* Actually display the various requested regions. */
2654
2655 static void
2656 dump_data (bfd *abfd)
2657 {
2658 bfd_map_over_sections (abfd, dump_section, NULL);
2659 }
2660
2661 /* Should perhaps share code and display with nm? */
2662
2663 static void
2664 dump_symbols (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean dynamic)
2665 {
2666 asymbol **current;
2667 long max;
2668 long count;
2669
2670 if (dynamic)
2671 {
2672 current = dynsyms;
2673 max = dynsymcount;
2674 printf ("DYNAMIC SYMBOL TABLE:\n");
2675 }
2676 else
2677 {
2678 current = syms;
2679 max = symcount;
2680 printf ("SYMBOL TABLE:\n");
2681 }
2682
2683 if (max == 0)
2684 printf (_("no symbols\n"));
2685
2686 for (count = 0; count < max; count++)
2687 {
2688 bfd *cur_bfd;
2689
2690 if (*current == NULL)
2691 printf (_("no information for symbol number %ld\n"), count);
2692
2693 else if ((cur_bfd = bfd_asymbol_bfd (*current)) == NULL)
2694 printf (_("could not determine the type of symbol number %ld\n"),
2695 count);
2696
2697 else if (process_section_p ((* current)->section)
2698 && (dump_special_syms
2699 || !bfd_is_target_special_symbol (cur_bfd, *current)))
2700 {
2701 const char *name = (*current)->name;
2702
2703 if (do_demangle && name != NULL && *name != '\0')
2704 {
2705 char *alloc;
2706
2707 /* If we want to demangle the name, we demangle it
2708 here, and temporarily clobber it while calling
2709 bfd_print_symbol. FIXME: This is a gross hack. */
2710 alloc = bfd_demangle (cur_bfd, name, DMGL_ANSI | DMGL_PARAMS);
2711 if (alloc != NULL)
2712 (*current)->name = alloc;
2713 bfd_print_symbol (cur_bfd, stdout, *current,
2714 bfd_print_symbol_all);
2715 if (alloc != NULL)
2716 {
2717 (*current)->name = name;
2718 free (alloc);
2719 }
2720 }
2721 else
2722 bfd_print_symbol (cur_bfd, stdout, *current,
2723 bfd_print_symbol_all);
2724 printf ("\n");
2725 }
2726
2727 current++;
2728 }
2729 printf ("\n\n");
2730 }
2731 \f
2732 static void
2733 dump_reloc_set (bfd *abfd, asection *sec, arelent **relpp, long relcount)
2734 {
2735 arelent **p;
2736 char *last_filename, *last_functionname;
2737 unsigned int last_line;
2738
2739 /* Get column headers lined up reasonably. */
2740 {
2741 static int width;
2742
2743 if (width == 0)
2744 {
2745 char buf[30];
2746
2747 bfd_sprintf_vma (abfd, buf, (bfd_vma) -1);
2748 width = strlen (buf) - 7;
2749 }
2750 printf ("OFFSET %*s TYPE %*s VALUE \n", width, "", 12, "");
2751 }
2752
2753 last_filename = NULL;
2754 last_functionname = NULL;
2755 last_line = 0;
2756
2757 for (p = relpp; relcount && *p != NULL; p++, relcount--)
2758 {
2759 arelent *q = *p;
2760 const char *filename, *functionname;
2761 unsigned int line;
2762 const char *sym_name;
2763 const char *section_name;
2764
2765 if (start_address != (bfd_vma) -1
2766 && q->address < start_address)
2767 continue;
2768 if (stop_address != (bfd_vma) -1
2769 && q->address > stop_address)
2770 continue;
2771
2772 if (with_line_numbers
2773 && sec != NULL
2774 && bfd_find_nearest_line (abfd, sec, syms, q->address,
2775 &filename, &functionname, &line))
2776 {
2777 if (functionname != NULL
2778 && (last_functionname == NULL
2779 || strcmp (functionname, last_functionname) != 0))
2780 {
2781 printf ("%s():\n", functionname);
2782 if (last_functionname != NULL)
2783 free (last_functionname);
2784 last_functionname = xstrdup (functionname);
2785 }
2786
2787 if (line > 0
2788 && (line != last_line
2789 || (filename != NULL
2790 && last_filename != NULL
2791 && strcmp (filename, last_filename) != 0)))
2792 {
2793 printf ("%s:%u\n", filename == NULL ? "???" : filename, line);
2794 last_line = line;
2795 if (last_filename != NULL)
2796 free (last_filename);
2797 if (filename == NULL)
2798 last_filename = NULL;
2799 else
2800 last_filename = xstrdup (filename);
2801 }
2802 }
2803
2804 if (q->sym_ptr_ptr && *q->sym_ptr_ptr)
2805 {
2806 sym_name = (*(q->sym_ptr_ptr))->name;
2807 section_name = (*(q->sym_ptr_ptr))->section->name;
2808 }
2809 else
2810 {
2811 sym_name = NULL;
2812 section_name = NULL;
2813 }
2814
2815 bfd_printf_vma (abfd, q->address);
2816 if (q->howto == NULL)
2817 printf (" *unknown* ");
2818 else if (q->howto->name)
2819 printf (" %-16s ", q->howto->name);
2820 else
2821 printf (" %-16d ", q->howto->type);
2822
2823 if (sym_name)
2824 {
2825 objdump_print_symname (abfd, NULL, *q->sym_ptr_ptr);
2826 }
2827 else
2828 {
2829 if (section_name == NULL)
2830 section_name = "*unknown*";
2831 printf ("[%s]", section_name);
2832 }
2833
2834 if (q->addend)
2835 {
2836 printf ("+0x");
2837 bfd_printf_vma (abfd, q->addend);
2838 }
2839
2840 printf ("\n");
2841 }
2842 }
2843
2844 static void
2845 dump_relocs_in_section (bfd *abfd,
2846 asection *section,
2847 void *dummy ATTRIBUTE_UNUSED)
2848 {
2849 arelent **relpp;
2850 long relcount;
2851 long relsize;
2852
2853 if ( bfd_is_abs_section (section)
2854 || bfd_is_und_section (section)
2855 || bfd_is_com_section (section)
2856 || (! process_section_p (section))
2857 || ((section->flags & SEC_RELOC) == 0))
2858 return;
2859
2860 relsize = bfd_get_reloc_upper_bound (abfd, section);
2861 if (relsize < 0)
2862 bfd_fatal (bfd_get_filename (abfd));
2863
2864 printf ("RELOCATION RECORDS FOR [%s]:", section->name);
2865
2866 if (relsize == 0)
2867 {
2868 printf (" (none)\n\n");
2869 return;
2870 }
2871
2872 relpp = (arelent **) xmalloc (relsize);
2873 relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
2874
2875 if (relcount < 0)
2876 bfd_fatal (bfd_get_filename (abfd));
2877 else if (relcount == 0)
2878 printf (" (none)\n\n");
2879 else
2880 {
2881 printf ("\n");
2882 dump_reloc_set (abfd, section, relpp, relcount);
2883 printf ("\n\n");
2884 }
2885 free (relpp);
2886 }
2887
2888 static void
2889 dump_relocs (bfd *abfd)
2890 {
2891 bfd_map_over_sections (abfd, dump_relocs_in_section, NULL);
2892 }
2893
2894 static void
2895 dump_dynamic_relocs (bfd *abfd)
2896 {
2897 long relsize;
2898 arelent **relpp;
2899 long relcount;
2900
2901 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2902 if (relsize < 0)
2903 bfd_fatal (bfd_get_filename (abfd));
2904
2905 printf ("DYNAMIC RELOCATION RECORDS");
2906
2907 if (relsize == 0)
2908 printf (" (none)\n\n");
2909 else
2910 {
2911 relpp = (arelent **) xmalloc (relsize);
2912 relcount = bfd_canonicalize_dynamic_reloc (abfd, relpp, dynsyms);
2913
2914 if (relcount < 0)
2915 bfd_fatal (bfd_get_filename (abfd));
2916 else if (relcount == 0)
2917 printf (" (none)\n\n");
2918 else
2919 {
2920 printf ("\n");
2921 dump_reloc_set (abfd, NULL, relpp, relcount);
2922 printf ("\n\n");
2923 }
2924 free (relpp);
2925 }
2926 }
2927
2928 /* Creates a table of paths, to search for source files. */
2929
2930 static void
2931 add_include_path (const char *path)
2932 {
2933 if (path[0] == 0)
2934 return;
2935 include_path_count++;
2936 include_paths = (const char **)
2937 xrealloc (include_paths, include_path_count * sizeof (*include_paths));
2938 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2939 if (path[1] == ':' && path[2] == 0)
2940 path = concat (path, ".", (const char *) 0);
2941 #endif
2942 include_paths[include_path_count - 1] = path;
2943 }
2944
2945 static void
2946 adjust_addresses (bfd *abfd ATTRIBUTE_UNUSED,
2947 asection *section,
2948 void *arg)
2949 {
2950 if ((section->flags & SEC_DEBUGGING) == 0)
2951 {
2952 bfd_boolean *has_reloc_p = (bfd_boolean *) arg;
2953 section->vma += adjust_section_vma;
2954 if (*has_reloc_p)
2955 section->lma += adjust_section_vma;
2956 }
2957 }
2958
2959 /* Dump selected contents of ABFD. */
2960
2961 static void
2962 dump_bfd (bfd *abfd)
2963 {
2964 /* If we are adjusting section VMA's, change them all now. Changing
2965 the BFD information is a hack. However, we must do it, or
2966 bfd_find_nearest_line will not do the right thing. */
2967 if (adjust_section_vma != 0)
2968 {
2969 bfd_boolean has_reloc = (abfd->flags & HAS_RELOC);
2970 bfd_map_over_sections (abfd, adjust_addresses, &has_reloc);
2971 }
2972
2973 if (! dump_debugging_tags)
2974 printf (_("\n%s: file format %s\n"), bfd_get_filename (abfd),
2975 abfd->xvec->name);
2976 if (dump_ar_hdrs)
2977 print_arelt_descr (stdout, abfd, TRUE);
2978 if (dump_file_header)
2979 dump_bfd_header (abfd);
2980 if (dump_private_headers)
2981 dump_bfd_private_header (abfd);
2982 if (! dump_debugging_tags)
2983 putchar ('\n');
2984 if (dump_section_headers)
2985 dump_headers (abfd);
2986
2987 if (dump_symtab
2988 || dump_reloc_info
2989 || disassemble
2990 || dump_debugging
2991 || dump_dwarf_section_info)
2992 syms = slurp_symtab (abfd);
2993 if (dump_dynamic_symtab || dump_dynamic_reloc_info
2994 || (disassemble && bfd_get_dynamic_symtab_upper_bound (abfd) > 0))
2995 dynsyms = slurp_dynamic_symtab (abfd);
2996 if (disassemble)
2997 {
2998 synthcount = bfd_get_synthetic_symtab (abfd, symcount, syms,
2999 dynsymcount, dynsyms, &synthsyms);
3000 if (synthcount < 0)
3001 synthcount = 0;
3002 }
3003
3004 if (dump_symtab)
3005 dump_symbols (abfd, FALSE);
3006 if (dump_dynamic_symtab)
3007 dump_symbols (abfd, TRUE);
3008 if (dump_dwarf_section_info)
3009 dump_dwarf (abfd);
3010 if (dump_stab_section_info)
3011 dump_stabs (abfd);
3012 if (dump_reloc_info && ! disassemble)
3013 dump_relocs (abfd);
3014 if (dump_dynamic_reloc_info && ! disassemble)
3015 dump_dynamic_relocs (abfd);
3016 if (dump_section_contents)
3017 dump_data (abfd);
3018 if (disassemble)
3019 disassemble_data (abfd);
3020
3021 if (dump_debugging)
3022 {
3023 void *dhandle;
3024
3025 dhandle = read_debugging_info (abfd, syms, symcount, TRUE);
3026 if (dhandle != NULL)
3027 {
3028 if (!print_debugging_info (stdout, dhandle, abfd, syms,
3029 bfd_demangle,
3030 dump_debugging_tags ? TRUE : FALSE))
3031 {
3032 non_fatal (_("%s: printing debugging information failed"),
3033 bfd_get_filename (abfd));
3034 exit_status = 1;
3035 }
3036 }
3037 /* PR 6483: If there was no STABS or IEEE debug
3038 info in the file, try DWARF instead. */
3039 else if (! dump_dwarf_section_info)
3040 {
3041 dump_dwarf (abfd);
3042 }
3043 }
3044
3045 if (syms)
3046 {
3047 free (syms);
3048 syms = NULL;
3049 }
3050
3051 if (dynsyms)
3052 {
3053 free (dynsyms);
3054 dynsyms = NULL;
3055 }
3056
3057 if (synthsyms)
3058 {
3059 free (synthsyms);
3060 synthsyms = NULL;
3061 }
3062
3063 symcount = 0;
3064 dynsymcount = 0;
3065 synthcount = 0;
3066 }
3067
3068 static void
3069 display_bfd (bfd *abfd)
3070 {
3071 char **matching;
3072
3073 if (bfd_check_format_matches (abfd, bfd_object, &matching))
3074 {
3075 dump_bfd (abfd);
3076 return;
3077 }
3078
3079 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3080 {
3081 nonfatal (bfd_get_filename (abfd));
3082 list_matching_formats (matching);
3083 free (matching);
3084 return;
3085 }
3086
3087 if (bfd_get_error () != bfd_error_file_not_recognized)
3088 {
3089 nonfatal (bfd_get_filename (abfd));
3090 return;
3091 }
3092
3093 if (bfd_check_format_matches (abfd, bfd_core, &matching))
3094 {
3095 dump_bfd (abfd);
3096 return;
3097 }
3098
3099 nonfatal (bfd_get_filename (abfd));
3100
3101 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3102 {
3103 list_matching_formats (matching);
3104 free (matching);
3105 }
3106 }
3107
3108 static void
3109 display_file (char *filename, char *target)
3110 {
3111 bfd *file;
3112 bfd *arfile = NULL;
3113
3114 if (get_file_size (filename) < 1)
3115 {
3116 exit_status = 1;
3117 return;
3118 }
3119
3120 file = bfd_openr (filename, target);
3121 if (file == NULL)
3122 {
3123 nonfatal (filename);
3124 return;
3125 }
3126
3127 /* If the file is an archive, process all of its elements. */
3128 if (bfd_check_format (file, bfd_archive))
3129 {
3130 bfd *last_arfile = NULL;
3131
3132 printf (_("In archive %s:\n"), bfd_get_filename (file));
3133 for (;;)
3134 {
3135 bfd_set_error (bfd_error_no_error);
3136
3137 arfile = bfd_openr_next_archived_file (file, arfile);
3138 if (arfile == NULL)
3139 {
3140 if (bfd_get_error () != bfd_error_no_more_archived_files)
3141 nonfatal (bfd_get_filename (file));
3142 break;
3143 }
3144
3145 display_bfd (arfile);
3146
3147 if (last_arfile != NULL)
3148 bfd_close (last_arfile);
3149 last_arfile = arfile;
3150 }
3151
3152 if (last_arfile != NULL)
3153 bfd_close (last_arfile);
3154 }
3155 else
3156 display_bfd (file);
3157
3158 bfd_close (file);
3159 }
3160 \f
3161 int
3162 main (int argc, char **argv)
3163 {
3164 int c;
3165 char *target = default_target;
3166 bfd_boolean seenflag = FALSE;
3167
3168 #if defined (HAVE_SETLOCALE)
3169 #if defined (HAVE_LC_MESSAGES)
3170 setlocale (LC_MESSAGES, "");
3171 #endif
3172 setlocale (LC_CTYPE, "");
3173 #endif
3174
3175 bindtextdomain (PACKAGE, LOCALEDIR);
3176 textdomain (PACKAGE);
3177
3178 program_name = *argv;
3179 xmalloc_set_program_name (program_name);
3180
3181 START_PROGRESS (program_name, 0);
3182
3183 expandargv (&argc, &argv);
3184
3185 bfd_init ();
3186 set_default_bfd_target ();
3187
3188 while ((c = getopt_long (argc, argv,
3189 "pib:m:M:VvCdDlfFaHhrRtTxsSI:j:wE:zgeGW::",
3190 long_options, (int *) 0))
3191 != EOF)
3192 {
3193 switch (c)
3194 {
3195 case 0:
3196 break; /* We've been given a long option. */
3197 case 'm':
3198 machine = optarg;
3199 break;
3200 case 'M':
3201 if (disassembler_options)
3202 /* Ignore potential memory leak for now. */
3203 disassembler_options = concat (disassembler_options, ",",
3204 optarg, (const char *) NULL);
3205 else
3206 disassembler_options = optarg;
3207 break;
3208 case 'j':
3209 if (only_used == only_size)
3210 {
3211 only_size += 8;
3212 only = (char **) xrealloc (only, only_size * sizeof (char *));
3213 }
3214 only [only_used++] = optarg;
3215 break;
3216 case 'F':
3217 display_file_offsets = TRUE;
3218 break;
3219 case 'l':
3220 with_line_numbers = TRUE;
3221 break;
3222 case 'b':
3223 target = optarg;
3224 break;
3225 case 'C':
3226 do_demangle = TRUE;
3227 if (optarg != NULL)
3228 {
3229 enum demangling_styles style;
3230
3231 style = cplus_demangle_name_to_style (optarg);
3232 if (style == unknown_demangling)
3233 fatal (_("unknown demangling style `%s'"),
3234 optarg);
3235
3236 cplus_demangle_set_style (style);
3237 }
3238 break;
3239 case 'w':
3240 wide_output = TRUE;
3241 break;
3242 case OPTION_ADJUST_VMA:
3243 adjust_section_vma = parse_vma (optarg, "--adjust-vma");
3244 break;
3245 case OPTION_START_ADDRESS:
3246 start_address = parse_vma (optarg, "--start-address");
3247 if ((stop_address != (bfd_vma) -1) && stop_address <= start_address)
3248 fatal (_("error: the start address should be before the end address"));
3249 break;
3250 case OPTION_STOP_ADDRESS:
3251 stop_address = parse_vma (optarg, "--stop-address");
3252 if ((start_address != (bfd_vma) -1) && stop_address <= start_address)
3253 fatal (_("error: the stop address should be after the start address"));
3254 break;
3255 case OPTION_PREFIX:
3256 prefix = optarg;
3257 prefix_length = strlen (prefix);
3258 /* Remove an unnecessary trailing '/' */
3259 while (IS_DIR_SEPARATOR (prefix[prefix_length - 1]))
3260 prefix_length--;
3261 break;
3262 case OPTION_PREFIX_STRIP:
3263 prefix_strip = atoi (optarg);
3264 if (prefix_strip < 0)
3265 fatal (_("error: prefix strip must be non-negative"));
3266 break;
3267 case OPTION_INSN_WIDTH:
3268 insn_width = strtoul (optarg, NULL, 0);
3269 if (insn_width <= 0)
3270 fatal (_("error: instruction width must be positive"));
3271 break;
3272 case 'E':
3273 if (strcmp (optarg, "B") == 0)
3274 endian = BFD_ENDIAN_BIG;
3275 else if (strcmp (optarg, "L") == 0)
3276 endian = BFD_ENDIAN_LITTLE;
3277 else
3278 {
3279 non_fatal (_("unrecognized -E option"));
3280 usage (stderr, 1);
3281 }
3282 break;
3283 case OPTION_ENDIAN:
3284 if (strncmp (optarg, "big", strlen (optarg)) == 0)
3285 endian = BFD_ENDIAN_BIG;
3286 else if (strncmp (optarg, "little", strlen (optarg)) == 0)
3287 endian = BFD_ENDIAN_LITTLE;
3288 else
3289 {
3290 non_fatal (_("unrecognized --endian type `%s'"), optarg);
3291 usage (stderr, 1);
3292 }
3293 break;
3294
3295 case 'f':
3296 dump_file_header = TRUE;
3297 seenflag = TRUE;
3298 break;
3299 case 'i':
3300 formats_info = TRUE;
3301 seenflag = TRUE;
3302 break;
3303 case 'I':
3304 add_include_path (optarg);
3305 break;
3306 case 'p':
3307 dump_private_headers = TRUE;
3308 seenflag = TRUE;
3309 break;
3310 case 'x':
3311 dump_private_headers = TRUE;
3312 dump_symtab = TRUE;
3313 dump_reloc_info = TRUE;
3314 dump_file_header = TRUE;
3315 dump_ar_hdrs = TRUE;
3316 dump_section_headers = TRUE;
3317 seenflag = TRUE;
3318 break;
3319 case 't':
3320 dump_symtab = TRUE;
3321 seenflag = TRUE;
3322 break;
3323 case 'T':
3324 dump_dynamic_symtab = TRUE;
3325 seenflag = TRUE;
3326 break;
3327 case 'd':
3328 disassemble = TRUE;
3329 seenflag = TRUE;
3330 break;
3331 case 'z':
3332 disassemble_zeroes = TRUE;
3333 break;
3334 case 'D':
3335 disassemble = TRUE;
3336 disassemble_all = TRUE;
3337 seenflag = TRUE;
3338 break;
3339 case 'S':
3340 disassemble = TRUE;
3341 with_source_code = TRUE;
3342 seenflag = TRUE;
3343 break;
3344 case 'g':
3345 dump_debugging = 1;
3346 seenflag = TRUE;
3347 break;
3348 case 'e':
3349 dump_debugging = 1;
3350 dump_debugging_tags = 1;
3351 do_demangle = TRUE;
3352 seenflag = TRUE;
3353 break;
3354 case 'W':
3355 dump_dwarf_section_info = TRUE;
3356 seenflag = TRUE;
3357 if (optarg)
3358 dwarf_select_sections_by_letters (optarg);
3359 else
3360 dwarf_select_sections_all ();
3361 break;
3362 case OPTION_DWARF:
3363 dump_dwarf_section_info = TRUE;
3364 seenflag = TRUE;
3365 if (optarg)
3366 dwarf_select_sections_by_names (optarg);
3367 else
3368 dwarf_select_sections_all ();
3369 break;
3370 case 'G':
3371 dump_stab_section_info = TRUE;
3372 seenflag = TRUE;
3373 break;
3374 case 's':
3375 dump_section_contents = TRUE;
3376 seenflag = TRUE;
3377 break;
3378 case 'r':
3379 dump_reloc_info = TRUE;
3380 seenflag = TRUE;
3381 break;
3382 case 'R':
3383 dump_dynamic_reloc_info = TRUE;
3384 seenflag = TRUE;
3385 break;
3386 case 'a':
3387 dump_ar_hdrs = TRUE;
3388 seenflag = TRUE;
3389 break;
3390 case 'h':
3391 dump_section_headers = TRUE;
3392 seenflag = TRUE;
3393 break;
3394 case 'H':
3395 usage (stdout, 0);
3396 seenflag = TRUE;
3397 case 'v':
3398 case 'V':
3399 show_version = TRUE;
3400 seenflag = TRUE;
3401 break;
3402
3403 default:
3404 usage (stderr, 1);
3405 }
3406 }
3407
3408 if (show_version)
3409 print_version ("objdump");
3410
3411 if (!seenflag)
3412 usage (stderr, 2);
3413
3414 if (formats_info)
3415 exit_status = display_info ();
3416 else
3417 {
3418 if (optind == argc)
3419 display_file ("a.out", target);
3420 else
3421 for (; optind < argc;)
3422 display_file (argv[optind++], target);
3423 }
3424
3425 END_PROGRESS (program_name);
3426
3427 return exit_status;
3428 }
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