Print addend as signed in objdump
[binutils-gdb.git] / binutils / objdump.c
1 /* objdump.c -- dump information about an object file.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011,
4 2012 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 "elfcomm.h"
59 #include "dwarf.h"
60 #include "getopt.h"
61 #include "safe-ctype.h"
62 #include "dis-asm.h"
63 #include "libiberty.h"
64 #include "demangle.h"
65 #include "filenames.h"
66 #include "debug.h"
67 #include "budbg.h"
68 #include "objdump.h"
69
70 #ifdef HAVE_MMAP
71 #include <sys/mman.h>
72 #endif
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 char *dump_private_options; /* -P */
96 static int prefix_addresses; /* --prefix-addresses */
97 static int with_line_numbers; /* -l */
98 static bfd_boolean with_source_code; /* -S */
99 static int show_raw_insn; /* --show-raw-insn */
100 static int dump_dwarf_section_info; /* --dwarf */
101 static int dump_stab_section_info; /* --stabs */
102 static int do_demangle; /* -C, --demangle */
103 static bfd_boolean disassemble; /* -d */
104 static bfd_boolean disassemble_all; /* -D */
105 static int disassemble_zeroes; /* --disassemble-zeroes */
106 static bfd_boolean formats_info; /* -i */
107 static int wide_output; /* -w */
108 static int insn_width; /* --insn-width */
109 static bfd_vma start_address = (bfd_vma) -1; /* --start-address */
110 static bfd_vma stop_address = (bfd_vma) -1; /* --stop-address */
111 static int dump_debugging; /* --debugging */
112 static int dump_debugging_tags; /* --debugging-tags */
113 static int suppress_bfd_header;
114 static int dump_special_syms = 0; /* --special-syms */
115 static bfd_vma adjust_section_vma = 0; /* --adjust-vma */
116 static int file_start_context = 0; /* --file-start-context */
117 static bfd_boolean display_file_offsets;/* -F */
118 static const char *prefix; /* --prefix */
119 static int prefix_strip; /* --prefix-strip */
120 static size_t prefix_length;
121
122 /* A structure to record the sections mentioned in -j switches. */
123 struct only
124 {
125 const char * name; /* The name of the section. */
126 bfd_boolean seen; /* A flag to indicate that the section has been found in one or more input files. */
127 struct only * next; /* Pointer to the next structure in the list. */
128 };
129 /* Pointer to an array of 'only' structures.
130 This pointer is NULL if the -j switch has not been used. */
131 static struct only * only_list = NULL;
132
133 /* Variables for handling include file path table. */
134 static const char **include_paths;
135 static int include_path_count;
136
137 /* Extra info to pass to the section disassembler and address printing
138 function. */
139 struct objdump_disasm_info
140 {
141 bfd * abfd;
142 asection * sec;
143 bfd_boolean require_sec;
144 arelent ** dynrelbuf;
145 long dynrelcount;
146 disassembler_ftype disassemble_fn;
147 arelent * reloc;
148 };
149
150 /* Architecture to disassemble for, or default if NULL. */
151 static char *machine = NULL;
152
153 /* Target specific options to the disassembler. */
154 static char *disassembler_options = NULL;
155
156 /* Endianness to disassemble for, or default if BFD_ENDIAN_UNKNOWN. */
157 static enum bfd_endian endian = BFD_ENDIAN_UNKNOWN;
158
159 /* The symbol table. */
160 static asymbol **syms;
161
162 /* Number of symbols in `syms'. */
163 static long symcount = 0;
164
165 /* The sorted symbol table. */
166 static asymbol **sorted_syms;
167
168 /* Number of symbols in `sorted_syms'. */
169 static long sorted_symcount = 0;
170
171 /* The dynamic symbol table. */
172 static asymbol **dynsyms;
173
174 /* The synthetic symbol table. */
175 static asymbol *synthsyms;
176 static long synthcount = 0;
177
178 /* Number of symbols in `dynsyms'. */
179 static long dynsymcount = 0;
180
181 static bfd_byte *stabs;
182 static bfd_size_type stab_size;
183
184 static char *strtab;
185 static bfd_size_type stabstr_size;
186
187 static bfd_boolean is_relocatable = FALSE;
188
189 /* Handlers for -P/--private. */
190 static const struct objdump_private_desc * const objdump_private_vectors[] =
191 {
192 OBJDUMP_PRIVATE_VECTORS
193 NULL
194 };
195 \f
196 static void
197 usage (FILE *stream, int status)
198 {
199 fprintf (stream, _("Usage: %s <option(s)> <file(s)>\n"), program_name);
200 fprintf (stream, _(" Display information from object <file(s)>.\n"));
201 fprintf (stream, _(" At least one of the following switches must be given:\n"));
202 fprintf (stream, _("\
203 -a, --archive-headers Display archive header information\n\
204 -f, --file-headers Display the contents of the overall file header\n\
205 -p, --private-headers Display object format specific file header contents\n\
206 -P, --private=OPT,OPT... Display object format specific contents\n\
207 -h, --[section-]headers Display the contents of the section headers\n\
208 -x, --all-headers Display the contents of all headers\n\
209 -d, --disassemble Display assembler contents of executable sections\n\
210 -D, --disassemble-all Display assembler contents of all sections\n\
211 -S, --source Intermix source code with disassembly\n\
212 -s, --full-contents Display the full contents of all sections requested\n\
213 -g, --debugging Display debug information in object file\n\
214 -e, --debugging-tags Display debug information using ctags style\n\
215 -G, --stabs Display (in raw form) any STABS info in the file\n\
216 -W[lLiaprmfFsoRt] or\n\
217 --dwarf[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,\n\
218 =frames-interp,=str,=loc,=Ranges,=pubtypes,\n\
219 =gdb_index,=trace_info,=trace_abbrev,=trace_aranges]\n\
220 Display DWARF info in the file\n\
221 -t, --syms Display the contents of the symbol table(s)\n\
222 -T, --dynamic-syms Display the contents of the dynamic symbol table\n\
223 -r, --reloc Display the relocation entries in the file\n\
224 -R, --dynamic-reloc Display the dynamic relocation entries in the file\n\
225 @<file> Read options from <file>\n\
226 -v, --version Display this program's version number\n\
227 -i, --info List object formats and architectures supported\n\
228 -H, --help Display this information\n\
229 "));
230 if (status != 2)
231 {
232 const struct objdump_private_desc * const *desc;
233
234 fprintf (stream, _("\n The following switches are optional:\n"));
235 fprintf (stream, _("\
236 -b, --target=BFDNAME Specify the target object format as BFDNAME\n\
237 -m, --architecture=MACHINE Specify the target architecture as MACHINE\n\
238 -j, --section=NAME Only display information for section NAME\n\
239 -M, --disassembler-options=OPT Pass text OPT on to the disassembler\n\
240 -EB --endian=big Assume big endian format when disassembling\n\
241 -EL --endian=little Assume little endian format when disassembling\n\
242 --file-start-context Include context from start of file (with -S)\n\
243 -I, --include=DIR Add DIR to search list for source files\n\
244 -l, --line-numbers Include line numbers and filenames in output\n\
245 -F, --file-offsets Include file offsets when displaying information\n\
246 -C, --demangle[=STYLE] Decode mangled/processed symbol names\n\
247 The STYLE, if specified, can be `auto', `gnu',\n\
248 `lucid', `arm', `hp', `edg', `gnu-v3', `java'\n\
249 or `gnat'\n\
250 -w, --wide Format output for more than 80 columns\n\
251 -z, --disassemble-zeroes Do not skip blocks of zeroes when disassembling\n\
252 --start-address=ADDR Only process data whose address is >= ADDR\n\
253 --stop-address=ADDR Only process data whose address is <= ADDR\n\
254 --prefix-addresses Print complete address alongside disassembly\n\
255 --[no-]show-raw-insn Display hex alongside symbolic disassembly\n\
256 --insn-width=WIDTH Display WIDTH bytes on a single line for -d\n\
257 --adjust-vma=OFFSET Add OFFSET to all displayed section addresses\n\
258 --special-syms Include special symbols in symbol dumps\n\
259 --prefix=PREFIX Add PREFIX to absolute paths for -S\n\
260 --prefix-strip=LEVEL Strip initial directory names for -S\n"));
261 fprintf (stream, _("\
262 --dwarf-depth=N Do not display DIEs at depth N or greater\n\
263 --dwarf-start=N Display DIEs starting with N, at the same depth\n\
264 or deeper\n\
265 --dwarf-check Make additional dwarf internal consistency checks.\
266 \n\n"));
267 list_supported_targets (program_name, stream);
268 list_supported_architectures (program_name, stream);
269
270 disassembler_usage (stream);
271
272 if (objdump_private_vectors[0] != NULL)
273 {
274 fprintf (stream,
275 _("\nOptions supported for -P/--private switch:\n"));
276 for (desc = objdump_private_vectors; *desc != NULL; desc++)
277 (*desc)->help (stream);
278 }
279 }
280 if (REPORT_BUGS_TO[0] && status == 0)
281 fprintf (stream, _("Report bugs to %s.\n"), REPORT_BUGS_TO);
282 exit (status);
283 }
284
285 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
286 enum option_values
287 {
288 OPTION_ENDIAN=150,
289 OPTION_START_ADDRESS,
290 OPTION_STOP_ADDRESS,
291 OPTION_DWARF,
292 OPTION_PREFIX,
293 OPTION_PREFIX_STRIP,
294 OPTION_INSN_WIDTH,
295 OPTION_ADJUST_VMA,
296 OPTION_DWARF_DEPTH,
297 OPTION_DWARF_CHECK,
298 OPTION_DWARF_START
299 };
300
301 static struct option long_options[]=
302 {
303 {"adjust-vma", required_argument, NULL, OPTION_ADJUST_VMA},
304 {"all-headers", no_argument, NULL, 'x'},
305 {"private-headers", no_argument, NULL, 'p'},
306 {"private", required_argument, NULL, 'P'},
307 {"architecture", required_argument, NULL, 'm'},
308 {"archive-headers", no_argument, NULL, 'a'},
309 {"debugging", no_argument, NULL, 'g'},
310 {"debugging-tags", no_argument, NULL, 'e'},
311 {"demangle", optional_argument, NULL, 'C'},
312 {"disassemble", no_argument, NULL, 'd'},
313 {"disassemble-all", no_argument, NULL, 'D'},
314 {"disassembler-options", required_argument, NULL, 'M'},
315 {"disassemble-zeroes", no_argument, NULL, 'z'},
316 {"dynamic-reloc", no_argument, NULL, 'R'},
317 {"dynamic-syms", no_argument, NULL, 'T'},
318 {"endian", required_argument, NULL, OPTION_ENDIAN},
319 {"file-headers", no_argument, NULL, 'f'},
320 {"file-offsets", no_argument, NULL, 'F'},
321 {"file-start-context", no_argument, &file_start_context, 1},
322 {"full-contents", no_argument, NULL, 's'},
323 {"headers", no_argument, NULL, 'h'},
324 {"help", no_argument, NULL, 'H'},
325 {"info", no_argument, NULL, 'i'},
326 {"line-numbers", no_argument, NULL, 'l'},
327 {"no-show-raw-insn", no_argument, &show_raw_insn, -1},
328 {"prefix-addresses", no_argument, &prefix_addresses, 1},
329 {"reloc", no_argument, NULL, 'r'},
330 {"section", required_argument, NULL, 'j'},
331 {"section-headers", no_argument, NULL, 'h'},
332 {"show-raw-insn", no_argument, &show_raw_insn, 1},
333 {"source", no_argument, NULL, 'S'},
334 {"special-syms", no_argument, &dump_special_syms, 1},
335 {"include", required_argument, NULL, 'I'},
336 {"dwarf", optional_argument, NULL, OPTION_DWARF},
337 {"stabs", no_argument, NULL, 'G'},
338 {"start-address", required_argument, NULL, OPTION_START_ADDRESS},
339 {"stop-address", required_argument, NULL, OPTION_STOP_ADDRESS},
340 {"syms", no_argument, NULL, 't'},
341 {"target", required_argument, NULL, 'b'},
342 {"version", no_argument, NULL, 'V'},
343 {"wide", no_argument, NULL, 'w'},
344 {"prefix", required_argument, NULL, OPTION_PREFIX},
345 {"prefix-strip", required_argument, NULL, OPTION_PREFIX_STRIP},
346 {"insn-width", required_argument, NULL, OPTION_INSN_WIDTH},
347 {"dwarf-depth", required_argument, 0, OPTION_DWARF_DEPTH},
348 {"dwarf-start", required_argument, 0, OPTION_DWARF_START},
349 {"dwarf-check", no_argument, 0, OPTION_DWARF_CHECK},
350 {0, no_argument, 0, 0}
351 };
352 \f
353 static void
354 nonfatal (const char *msg)
355 {
356 bfd_nonfatal (msg);
357 exit_status = 1;
358 }
359 \f
360 /* Returns TRUE if the specified section should be dumped. */
361
362 static bfd_boolean
363 process_section_p (asection * section)
364 {
365 struct only * only;
366
367 if (only_list == NULL)
368 return TRUE;
369
370 for (only = only_list; only; only = only->next)
371 if (strcmp (only->name, section->name) == 0)
372 {
373 only->seen = TRUE;
374 return TRUE;
375 }
376
377 return FALSE;
378 }
379
380 /* Add an entry to the 'only' list. */
381
382 static void
383 add_only (char * name)
384 {
385 struct only * only;
386
387 /* First check to make sure that we do not
388 already have an entry for this name. */
389 for (only = only_list; only; only = only->next)
390 if (strcmp (only->name, name) == 0)
391 return;
392
393 only = xmalloc (sizeof * only);
394 only->name = name;
395 only->seen = FALSE;
396 only->next = only_list;
397 only_list = only;
398 }
399
400 /* Release the memory used by the 'only' list.
401 PR 11225: Issue a warning message for unseen sections.
402 Only do this if none of the sections were seen. This is mainly to support
403 tools like the GAS testsuite where an object file is dumped with a list of
404 generic section names known to be present in a range of different file
405 formats. */
406
407 static void
408 free_only_list (void)
409 {
410 bfd_boolean at_least_one_seen = FALSE;
411 struct only * only;
412 struct only * next;
413
414 if (only_list == NULL)
415 return;
416
417 for (only = only_list; only; only = only->next)
418 if (only->seen)
419 {
420 at_least_one_seen = TRUE;
421 break;
422 }
423
424 for (only = only_list; only; only = next)
425 {
426 if (! at_least_one_seen)
427 {
428 non_fatal (_("section '%s' mentioned in a -j option, "
429 "but not found in any input file"),
430 only->name);
431 exit_status = 1;
432 }
433 next = only->next;
434 free (only);
435 }
436 }
437
438 \f
439 static void
440 dump_section_header (bfd *abfd, asection *section,
441 void *ignored ATTRIBUTE_UNUSED)
442 {
443 char *comma = "";
444 unsigned int opb = bfd_octets_per_byte (abfd);
445
446 /* Ignore linker created section. See elfNN_ia64_object_p in
447 bfd/elfxx-ia64.c. */
448 if (section->flags & SEC_LINKER_CREATED)
449 return;
450
451 /* PR 10413: Skip sections that we are ignoring. */
452 if (! process_section_p (section))
453 return;
454
455 printf ("%3d %-13s %08lx ", section->index,
456 bfd_get_section_name (abfd, section),
457 (unsigned long) bfd_section_size (abfd, section) / opb);
458 bfd_printf_vma (abfd, bfd_get_section_vma (abfd, section));
459 printf (" ");
460 bfd_printf_vma (abfd, section->lma);
461 printf (" %08lx 2**%u", (unsigned long) section->filepos,
462 bfd_get_section_alignment (abfd, section));
463 if (! wide_output)
464 printf ("\n ");
465 printf (" ");
466
467 #define PF(x, y) \
468 if (section->flags & x) { printf ("%s%s", comma, y); comma = ", "; }
469
470 PF (SEC_HAS_CONTENTS, "CONTENTS");
471 PF (SEC_ALLOC, "ALLOC");
472 PF (SEC_CONSTRUCTOR, "CONSTRUCTOR");
473 PF (SEC_LOAD, "LOAD");
474 PF (SEC_RELOC, "RELOC");
475 PF (SEC_READONLY, "READONLY");
476 PF (SEC_CODE, "CODE");
477 PF (SEC_DATA, "DATA");
478 PF (SEC_ROM, "ROM");
479 PF (SEC_DEBUGGING, "DEBUGGING");
480 PF (SEC_NEVER_LOAD, "NEVER_LOAD");
481 PF (SEC_EXCLUDE, "EXCLUDE");
482 PF (SEC_SORT_ENTRIES, "SORT_ENTRIES");
483 if (bfd_get_arch (abfd) == bfd_arch_tic54x)
484 {
485 PF (SEC_TIC54X_BLOCK, "BLOCK");
486 PF (SEC_TIC54X_CLINK, "CLINK");
487 }
488 PF (SEC_SMALL_DATA, "SMALL_DATA");
489 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
490 PF (SEC_COFF_SHARED, "SHARED");
491 PF (SEC_THREAD_LOCAL, "THREAD_LOCAL");
492 PF (SEC_GROUP, "GROUP");
493
494 if ((section->flags & SEC_LINK_ONCE) != 0)
495 {
496 const char *ls;
497 struct coff_comdat_info *comdat;
498
499 switch (section->flags & SEC_LINK_DUPLICATES)
500 {
501 default:
502 abort ();
503 case SEC_LINK_DUPLICATES_DISCARD:
504 ls = "LINK_ONCE_DISCARD";
505 break;
506 case SEC_LINK_DUPLICATES_ONE_ONLY:
507 ls = "LINK_ONCE_ONE_ONLY";
508 break;
509 case SEC_LINK_DUPLICATES_SAME_SIZE:
510 ls = "LINK_ONCE_SAME_SIZE";
511 break;
512 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
513 ls = "LINK_ONCE_SAME_CONTENTS";
514 break;
515 }
516 printf ("%s%s", comma, ls);
517
518 comdat = bfd_coff_get_comdat_section (abfd, section);
519 if (comdat != NULL)
520 printf (" (COMDAT %s %ld)", comdat->name, comdat->symbol);
521
522 comma = ", ";
523 }
524
525 printf ("\n");
526 #undef PF
527 }
528
529 static void
530 dump_headers (bfd *abfd)
531 {
532 printf (_("Sections:\n"));
533
534 #ifndef BFD64
535 printf (_("Idx Name Size VMA LMA File off Algn"));
536 #else
537 /* With BFD64, non-ELF returns -1 and wants always 64 bit addresses. */
538 if (bfd_get_arch_size (abfd) == 32)
539 printf (_("Idx Name Size VMA LMA File off Algn"));
540 else
541 printf (_("Idx Name Size VMA LMA File off Algn"));
542 #endif
543
544 if (wide_output)
545 printf (_(" Flags"));
546 printf ("\n");
547
548 bfd_map_over_sections (abfd, dump_section_header, NULL);
549 }
550 \f
551 static asymbol **
552 slurp_symtab (bfd *abfd)
553 {
554 asymbol **sy = NULL;
555 long storage;
556
557 if (!(bfd_get_file_flags (abfd) & HAS_SYMS))
558 {
559 symcount = 0;
560 return NULL;
561 }
562
563 storage = bfd_get_symtab_upper_bound (abfd);
564 if (storage < 0)
565 bfd_fatal (bfd_get_filename (abfd));
566 if (storage)
567 sy = (asymbol **) xmalloc (storage);
568
569 symcount = bfd_canonicalize_symtab (abfd, sy);
570 if (symcount < 0)
571 bfd_fatal (bfd_get_filename (abfd));
572 return sy;
573 }
574
575 /* Read in the dynamic symbols. */
576
577 static asymbol **
578 slurp_dynamic_symtab (bfd *abfd)
579 {
580 asymbol **sy = NULL;
581 long storage;
582
583 storage = bfd_get_dynamic_symtab_upper_bound (abfd);
584 if (storage < 0)
585 {
586 if (!(bfd_get_file_flags (abfd) & DYNAMIC))
587 {
588 non_fatal (_("%s: not a dynamic object"), bfd_get_filename (abfd));
589 exit_status = 1;
590 dynsymcount = 0;
591 return NULL;
592 }
593
594 bfd_fatal (bfd_get_filename (abfd));
595 }
596 if (storage)
597 sy = (asymbol **) xmalloc (storage);
598
599 dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, sy);
600 if (dynsymcount < 0)
601 bfd_fatal (bfd_get_filename (abfd));
602 return sy;
603 }
604
605 /* Filter out (in place) symbols that are useless for disassembly.
606 COUNT is the number of elements in SYMBOLS.
607 Return the number of useful symbols. */
608
609 static long
610 remove_useless_symbols (asymbol **symbols, long count)
611 {
612 asymbol **in_ptr = symbols, **out_ptr = symbols;
613
614 while (--count >= 0)
615 {
616 asymbol *sym = *in_ptr++;
617
618 if (sym->name == NULL || sym->name[0] == '\0')
619 continue;
620 if (sym->flags & (BSF_DEBUGGING | BSF_SECTION_SYM))
621 continue;
622 if (bfd_is_und_section (sym->section)
623 || bfd_is_com_section (sym->section))
624 continue;
625
626 *out_ptr++ = sym;
627 }
628 return out_ptr - symbols;
629 }
630
631 /* Sort symbols into value order. */
632
633 static int
634 compare_symbols (const void *ap, const void *bp)
635 {
636 const asymbol *a = * (const asymbol **) ap;
637 const asymbol *b = * (const asymbol **) bp;
638 const char *an;
639 const char *bn;
640 size_t anl;
641 size_t bnl;
642 bfd_boolean af;
643 bfd_boolean bf;
644 flagword aflags;
645 flagword bflags;
646
647 if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
648 return 1;
649 else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
650 return -1;
651
652 if (a->section > b->section)
653 return 1;
654 else if (a->section < b->section)
655 return -1;
656
657 an = bfd_asymbol_name (a);
658 bn = bfd_asymbol_name (b);
659 anl = strlen (an);
660 bnl = strlen (bn);
661
662 /* The symbols gnu_compiled and gcc2_compiled convey no real
663 information, so put them after other symbols with the same value. */
664 af = (strstr (an, "gnu_compiled") != NULL
665 || strstr (an, "gcc2_compiled") != NULL);
666 bf = (strstr (bn, "gnu_compiled") != NULL
667 || strstr (bn, "gcc2_compiled") != NULL);
668
669 if (af && ! bf)
670 return 1;
671 if (! af && bf)
672 return -1;
673
674 /* We use a heuristic for the file name, to try to sort it after
675 more useful symbols. It may not work on non Unix systems, but it
676 doesn't really matter; the only difference is precisely which
677 symbol names get printed. */
678
679 #define file_symbol(s, sn, snl) \
680 (((s)->flags & BSF_FILE) != 0 \
681 || ((sn)[(snl) - 2] == '.' \
682 && ((sn)[(snl) - 1] == 'o' \
683 || (sn)[(snl) - 1] == 'a')))
684
685 af = file_symbol (a, an, anl);
686 bf = file_symbol (b, bn, bnl);
687
688 if (af && ! bf)
689 return 1;
690 if (! af && bf)
691 return -1;
692
693 /* Try to sort global symbols before local symbols before function
694 symbols before debugging symbols. */
695
696 aflags = a->flags;
697 bflags = b->flags;
698
699 if ((aflags & BSF_DEBUGGING) != (bflags & BSF_DEBUGGING))
700 {
701 if ((aflags & BSF_DEBUGGING) != 0)
702 return 1;
703 else
704 return -1;
705 }
706 if ((aflags & BSF_FUNCTION) != (bflags & BSF_FUNCTION))
707 {
708 if ((aflags & BSF_FUNCTION) != 0)
709 return -1;
710 else
711 return 1;
712 }
713 if ((aflags & BSF_LOCAL) != (bflags & BSF_LOCAL))
714 {
715 if ((aflags & BSF_LOCAL) != 0)
716 return 1;
717 else
718 return -1;
719 }
720 if ((aflags & BSF_GLOBAL) != (bflags & BSF_GLOBAL))
721 {
722 if ((aflags & BSF_GLOBAL) != 0)
723 return -1;
724 else
725 return 1;
726 }
727
728 /* Symbols that start with '.' might be section names, so sort them
729 after symbols that don't start with '.'. */
730 if (an[0] == '.' && bn[0] != '.')
731 return 1;
732 if (an[0] != '.' && bn[0] == '.')
733 return -1;
734
735 /* Finally, if we can't distinguish them in any other way, try to
736 get consistent results by sorting the symbols by name. */
737 return strcmp (an, bn);
738 }
739
740 /* Sort relocs into address order. */
741
742 static int
743 compare_relocs (const void *ap, const void *bp)
744 {
745 const arelent *a = * (const arelent **) ap;
746 const arelent *b = * (const arelent **) bp;
747
748 if (a->address > b->address)
749 return 1;
750 else if (a->address < b->address)
751 return -1;
752
753 /* So that associated relocations tied to the same address show up
754 in the correct order, we don't do any further sorting. */
755 if (a > b)
756 return 1;
757 else if (a < b)
758 return -1;
759 else
760 return 0;
761 }
762
763 /* Print an address (VMA) to the output stream in INFO.
764 If SKIP_ZEROES is TRUE, omit leading zeroes. */
765
766 static void
767 objdump_print_value (bfd_vma vma, struct disassemble_info *inf,
768 bfd_boolean skip_zeroes)
769 {
770 char buf[30];
771 char *p;
772 struct objdump_disasm_info *aux;
773
774 aux = (struct objdump_disasm_info *) inf->application_data;
775 bfd_sprintf_vma (aux->abfd, buf, vma);
776 if (! skip_zeroes)
777 p = buf;
778 else
779 {
780 for (p = buf; *p == '0'; ++p)
781 ;
782 if (*p == '\0')
783 --p;
784 }
785 (*inf->fprintf_func) (inf->stream, "%s", p);
786 }
787
788 /* Print the name of a symbol. */
789
790 static void
791 objdump_print_symname (bfd *abfd, struct disassemble_info *inf,
792 asymbol *sym)
793 {
794 char *alloc;
795 const char *name;
796
797 alloc = NULL;
798 name = bfd_asymbol_name (sym);
799 if (do_demangle && name[0] != '\0')
800 {
801 /* Demangle the name. */
802 alloc = bfd_demangle (abfd, name, DMGL_ANSI | DMGL_PARAMS);
803 if (alloc != NULL)
804 name = alloc;
805 }
806
807 if (inf != NULL)
808 (*inf->fprintf_func) (inf->stream, "%s", name);
809 else
810 printf ("%s", name);
811
812 if (alloc != NULL)
813 free (alloc);
814 }
815
816 /* Locate a symbol given a bfd and a section (from INFO->application_data),
817 and a VMA. If INFO->application_data->require_sec is TRUE, then always
818 require the symbol to be in the section. Returns NULL if there is no
819 suitable symbol. If PLACE is not NULL, then *PLACE is set to the index
820 of the symbol in sorted_syms. */
821
822 static asymbol *
823 find_symbol_for_address (bfd_vma vma,
824 struct disassemble_info *inf,
825 long *place)
826 {
827 /* @@ Would it speed things up to cache the last two symbols returned,
828 and maybe their address ranges? For many processors, only one memory
829 operand can be present at a time, so the 2-entry cache wouldn't be
830 constantly churned by code doing heavy memory accesses. */
831
832 /* Indices in `sorted_syms'. */
833 long min = 0;
834 long max_count = sorted_symcount;
835 long thisplace;
836 struct objdump_disasm_info *aux;
837 bfd *abfd;
838 asection *sec;
839 unsigned int opb;
840 bfd_boolean want_section;
841
842 if (sorted_symcount < 1)
843 return NULL;
844
845 aux = (struct objdump_disasm_info *) inf->application_data;
846 abfd = aux->abfd;
847 sec = aux->sec;
848 opb = inf->octets_per_byte;
849
850 /* Perform a binary search looking for the closest symbol to the
851 required value. We are searching the range (min, max_count]. */
852 while (min + 1 < max_count)
853 {
854 asymbol *sym;
855
856 thisplace = (max_count + min) / 2;
857 sym = sorted_syms[thisplace];
858
859 if (bfd_asymbol_value (sym) > vma)
860 max_count = thisplace;
861 else if (bfd_asymbol_value (sym) < vma)
862 min = thisplace;
863 else
864 {
865 min = thisplace;
866 break;
867 }
868 }
869
870 /* The symbol we want is now in min, the low end of the range we
871 were searching. If there are several symbols with the same
872 value, we want the first one. */
873 thisplace = min;
874 while (thisplace > 0
875 && (bfd_asymbol_value (sorted_syms[thisplace])
876 == bfd_asymbol_value (sorted_syms[thisplace - 1])))
877 --thisplace;
878
879 /* Prefer a symbol in the current section if we have multple symbols
880 with the same value, as can occur with overlays or zero size
881 sections. */
882 min = thisplace;
883 while (min < max_count
884 && (bfd_asymbol_value (sorted_syms[min])
885 == bfd_asymbol_value (sorted_syms[thisplace])))
886 {
887 if (sorted_syms[min]->section == sec
888 && inf->symbol_is_valid (sorted_syms[min], inf))
889 {
890 thisplace = min;
891
892 if (place != NULL)
893 *place = thisplace;
894
895 return sorted_syms[thisplace];
896 }
897 ++min;
898 }
899
900 /* If the file is relocatable, and the symbol could be from this
901 section, prefer a symbol from this section over symbols from
902 others, even if the other symbol's value might be closer.
903
904 Note that this may be wrong for some symbol references if the
905 sections have overlapping memory ranges, but in that case there's
906 no way to tell what's desired without looking at the relocation
907 table.
908
909 Also give the target a chance to reject symbols. */
910 want_section = (aux->require_sec
911 || ((abfd->flags & HAS_RELOC) != 0
912 && vma >= bfd_get_section_vma (abfd, sec)
913 && vma < (bfd_get_section_vma (abfd, sec)
914 + bfd_section_size (abfd, sec) / opb)));
915 if ((sorted_syms[thisplace]->section != sec && want_section)
916 || ! inf->symbol_is_valid (sorted_syms[thisplace], inf))
917 {
918 long i;
919 long newplace = sorted_symcount;
920
921 for (i = min - 1; i >= 0; i--)
922 {
923 if ((sorted_syms[i]->section == sec || !want_section)
924 && inf->symbol_is_valid (sorted_syms[i], inf))
925 {
926 if (newplace == sorted_symcount)
927 newplace = i;
928
929 if (bfd_asymbol_value (sorted_syms[i])
930 != bfd_asymbol_value (sorted_syms[newplace]))
931 break;
932
933 /* Remember this symbol and keep searching until we reach
934 an earlier address. */
935 newplace = i;
936 }
937 }
938
939 if (newplace != sorted_symcount)
940 thisplace = newplace;
941 else
942 {
943 /* We didn't find a good symbol with a smaller value.
944 Look for one with a larger value. */
945 for (i = thisplace + 1; i < sorted_symcount; i++)
946 {
947 if ((sorted_syms[i]->section == sec || !want_section)
948 && inf->symbol_is_valid (sorted_syms[i], inf))
949 {
950 thisplace = i;
951 break;
952 }
953 }
954 }
955
956 if ((sorted_syms[thisplace]->section != sec && want_section)
957 || ! inf->symbol_is_valid (sorted_syms[thisplace], inf))
958 /* There is no suitable symbol. */
959 return NULL;
960 }
961
962 if (place != NULL)
963 *place = thisplace;
964
965 return sorted_syms[thisplace];
966 }
967
968 /* Print an address and the offset to the nearest symbol. */
969
970 static void
971 objdump_print_addr_with_sym (bfd *abfd, asection *sec, asymbol *sym,
972 bfd_vma vma, struct disassemble_info *inf,
973 bfd_boolean skip_zeroes)
974 {
975 objdump_print_value (vma, inf, skip_zeroes);
976
977 if (sym == NULL)
978 {
979 bfd_vma secaddr;
980
981 (*inf->fprintf_func) (inf->stream, " <%s",
982 bfd_get_section_name (abfd, sec));
983 secaddr = bfd_get_section_vma (abfd, sec);
984 if (vma < secaddr)
985 {
986 (*inf->fprintf_func) (inf->stream, "-0x");
987 objdump_print_value (secaddr - vma, inf, TRUE);
988 }
989 else if (vma > secaddr)
990 {
991 (*inf->fprintf_func) (inf->stream, "+0x");
992 objdump_print_value (vma - secaddr, inf, TRUE);
993 }
994 (*inf->fprintf_func) (inf->stream, ">");
995 }
996 else
997 {
998 (*inf->fprintf_func) (inf->stream, " <");
999 objdump_print_symname (abfd, inf, sym);
1000 if (bfd_asymbol_value (sym) > vma)
1001 {
1002 (*inf->fprintf_func) (inf->stream, "-0x");
1003 objdump_print_value (bfd_asymbol_value (sym) - vma, inf, TRUE);
1004 }
1005 else if (vma > bfd_asymbol_value (sym))
1006 {
1007 (*inf->fprintf_func) (inf->stream, "+0x");
1008 objdump_print_value (vma - bfd_asymbol_value (sym), inf, TRUE);
1009 }
1010 (*inf->fprintf_func) (inf->stream, ">");
1011 }
1012
1013 if (display_file_offsets)
1014 inf->fprintf_func (inf->stream, _(" (File Offset: 0x%lx)"),
1015 (long int)(sec->filepos + (vma - sec->vma)));
1016 }
1017
1018 /* Print an address (VMA), symbolically if possible.
1019 If SKIP_ZEROES is TRUE, don't output leading zeroes. */
1020
1021 static void
1022 objdump_print_addr (bfd_vma vma,
1023 struct disassemble_info *inf,
1024 bfd_boolean skip_zeroes)
1025 {
1026 struct objdump_disasm_info *aux;
1027 asymbol *sym = NULL;
1028 bfd_boolean skip_find = FALSE;
1029
1030 aux = (struct objdump_disasm_info *) inf->application_data;
1031
1032 if (sorted_symcount < 1)
1033 {
1034 (*inf->fprintf_func) (inf->stream, "0x");
1035 objdump_print_value (vma, inf, skip_zeroes);
1036
1037 if (display_file_offsets)
1038 inf->fprintf_func (inf->stream, _(" (File Offset: 0x%lx)"),
1039 (long int)(aux->sec->filepos + (vma - aux->sec->vma)));
1040 return;
1041 }
1042
1043 if (aux->reloc != NULL
1044 && aux->reloc->sym_ptr_ptr != NULL
1045 && * aux->reloc->sym_ptr_ptr != NULL)
1046 {
1047 sym = * aux->reloc->sym_ptr_ptr;
1048
1049 /* Adjust the vma to the reloc. */
1050 vma += bfd_asymbol_value (sym);
1051
1052 if (bfd_is_und_section (bfd_get_section (sym)))
1053 skip_find = TRUE;
1054 }
1055
1056 if (!skip_find)
1057 sym = find_symbol_for_address (vma, inf, NULL);
1058
1059 objdump_print_addr_with_sym (aux->abfd, aux->sec, sym, vma, inf,
1060 skip_zeroes);
1061 }
1062
1063 /* Print VMA to INFO. This function is passed to the disassembler
1064 routine. */
1065
1066 static void
1067 objdump_print_address (bfd_vma vma, struct disassemble_info *inf)
1068 {
1069 objdump_print_addr (vma, inf, ! prefix_addresses);
1070 }
1071
1072 /* Determine if the given address has a symbol associated with it. */
1073
1074 static int
1075 objdump_symbol_at_address (bfd_vma vma, struct disassemble_info * inf)
1076 {
1077 asymbol * sym;
1078
1079 sym = find_symbol_for_address (vma, inf, NULL);
1080
1081 return (sym != NULL && (bfd_asymbol_value (sym) == vma));
1082 }
1083
1084 /* Hold the last function name and the last line number we displayed
1085 in a disassembly. */
1086
1087 static char *prev_functionname;
1088 static unsigned int prev_line;
1089
1090 /* We keep a list of all files that we have seen when doing a
1091 disassembly with source, so that we know how much of the file to
1092 display. This can be important for inlined functions. */
1093
1094 struct print_file_list
1095 {
1096 struct print_file_list *next;
1097 const char *filename;
1098 const char *modname;
1099 const char *map;
1100 size_t mapsize;
1101 const char **linemap;
1102 unsigned maxline;
1103 unsigned last_line;
1104 int first;
1105 };
1106
1107 static struct print_file_list *print_files;
1108
1109 /* The number of preceding context lines to show when we start
1110 displaying a file for the first time. */
1111
1112 #define SHOW_PRECEDING_CONTEXT_LINES (5)
1113
1114 /* Read a complete file into memory. */
1115
1116 static const char *
1117 slurp_file (const char *fn, size_t *size)
1118 {
1119 #ifdef HAVE_MMAP
1120 int ps = getpagesize ();
1121 size_t msize;
1122 #endif
1123 const char *map;
1124 struct stat st;
1125 int fd = open (fn, O_RDONLY | O_BINARY);
1126
1127 if (fd < 0)
1128 return NULL;
1129 if (fstat (fd, &st) < 0)
1130 {
1131 close (fd);
1132 return NULL;
1133 }
1134 *size = st.st_size;
1135 #ifdef HAVE_MMAP
1136 msize = (*size + ps - 1) & ~(ps - 1);
1137 map = mmap (NULL, msize, PROT_READ, MAP_SHARED, fd, 0);
1138 if (map != (char *) -1L)
1139 {
1140 close (fd);
1141 return map;
1142 }
1143 #endif
1144 map = (const char *) malloc (*size);
1145 if (!map || (size_t) read (fd, (char *) map, *size) != *size)
1146 {
1147 free ((void *) map);
1148 map = NULL;
1149 }
1150 close (fd);
1151 return map;
1152 }
1153
1154 #define line_map_decrease 5
1155
1156 /* Precompute array of lines for a mapped file. */
1157
1158 static const char **
1159 index_file (const char *map, size_t size, unsigned int *maxline)
1160 {
1161 const char *p, *lstart, *end;
1162 int chars_per_line = 45; /* First iteration will use 40. */
1163 unsigned int lineno;
1164 const char **linemap = NULL;
1165 unsigned long line_map_size = 0;
1166
1167 lineno = 0;
1168 lstart = map;
1169 end = map + size;
1170
1171 for (p = map; p < end; p++)
1172 {
1173 if (*p == '\n')
1174 {
1175 if (p + 1 < end && p[1] == '\r')
1176 p++;
1177 }
1178 else if (*p == '\r')
1179 {
1180 if (p + 1 < end && p[1] == '\n')
1181 p++;
1182 }
1183 else
1184 continue;
1185
1186 /* End of line found. */
1187
1188 if (linemap == NULL || line_map_size < lineno + 1)
1189 {
1190 unsigned long newsize;
1191
1192 chars_per_line -= line_map_decrease;
1193 if (chars_per_line <= 1)
1194 chars_per_line = 1;
1195 line_map_size = size / chars_per_line + 1;
1196 if (line_map_size < lineno + 1)
1197 line_map_size = lineno + 1;
1198 newsize = line_map_size * sizeof (char *);
1199 linemap = (const char **) xrealloc (linemap, newsize);
1200 }
1201
1202 linemap[lineno++] = lstart;
1203 lstart = p + 1;
1204 }
1205
1206 *maxline = lineno;
1207 return linemap;
1208 }
1209
1210 /* Tries to open MODNAME, and if successful adds a node to print_files
1211 linked list and returns that node. Returns NULL on failure. */
1212
1213 static struct print_file_list *
1214 try_print_file_open (const char *origname, const char *modname)
1215 {
1216 struct print_file_list *p;
1217
1218 p = (struct print_file_list *) xmalloc (sizeof (struct print_file_list));
1219
1220 p->map = slurp_file (modname, &p->mapsize);
1221 if (p->map == NULL)
1222 {
1223 free (p);
1224 return NULL;
1225 }
1226
1227 p->linemap = index_file (p->map, p->mapsize, &p->maxline);
1228 p->last_line = 0;
1229 p->filename = origname;
1230 p->modname = modname;
1231 p->next = print_files;
1232 p->first = 1;
1233 print_files = p;
1234 return p;
1235 }
1236
1237 /* If the the source file, as described in the symtab, is not found
1238 try to locate it in one of the paths specified with -I
1239 If found, add location to print_files linked list. */
1240
1241 static struct print_file_list *
1242 update_source_path (const char *filename)
1243 {
1244 struct print_file_list *p;
1245 const char *fname;
1246 int i;
1247
1248 p = try_print_file_open (filename, filename);
1249 if (p != NULL)
1250 return p;
1251
1252 if (include_path_count == 0)
1253 return NULL;
1254
1255 /* Get the name of the file. */
1256 fname = lbasename (filename);
1257
1258 /* If file exists under a new path, we need to add it to the list
1259 so that show_line knows about it. */
1260 for (i = 0; i < include_path_count; i++)
1261 {
1262 char *modname = concat (include_paths[i], "/", fname, (const char *) 0);
1263
1264 p = try_print_file_open (filename, modname);
1265 if (p)
1266 return p;
1267
1268 free (modname);
1269 }
1270
1271 return NULL;
1272 }
1273
1274 /* Print a source file line. */
1275
1276 static void
1277 print_line (struct print_file_list *p, unsigned int linenum)
1278 {
1279 const char *l;
1280 size_t len;
1281
1282 --linenum;
1283 if (linenum >= p->maxline)
1284 return;
1285 l = p->linemap [linenum];
1286 /* Test fwrite return value to quiet glibc warning. */
1287 len = strcspn (l, "\n\r");
1288 if (len == 0 || fwrite (l, len, 1, stdout) == 1)
1289 putchar ('\n');
1290 }
1291
1292 /* Print a range of source code lines. */
1293
1294 static void
1295 dump_lines (struct print_file_list *p, unsigned int start, unsigned int end)
1296 {
1297 if (p->map == NULL)
1298 return;
1299 while (start <= end)
1300 {
1301 print_line (p, start);
1302 start++;
1303 }
1304 }
1305
1306 /* Show the line number, or the source line, in a disassembly
1307 listing. */
1308
1309 static void
1310 show_line (bfd *abfd, asection *section, bfd_vma addr_offset)
1311 {
1312 const char *filename;
1313 const char *functionname;
1314 unsigned int linenumber;
1315 bfd_boolean reloc;
1316
1317 if (! with_line_numbers && ! with_source_code)
1318 return;
1319
1320 if (! bfd_find_nearest_line (abfd, section, syms, addr_offset, &filename,
1321 &functionname, &linenumber))
1322 return;
1323
1324 if (filename != NULL && *filename == '\0')
1325 filename = NULL;
1326 if (functionname != NULL && *functionname == '\0')
1327 functionname = NULL;
1328
1329 if (filename
1330 && IS_ABSOLUTE_PATH (filename)
1331 && prefix)
1332 {
1333 char *path_up;
1334 const char *fname = filename;
1335 char *path = (char *) alloca (prefix_length + PATH_MAX + 1);
1336
1337 if (prefix_length)
1338 memcpy (path, prefix, prefix_length);
1339 path_up = path + prefix_length;
1340
1341 /* Build relocated filename, stripping off leading directories
1342 from the initial filename if requested. */
1343 if (prefix_strip > 0)
1344 {
1345 int level = 0;
1346 const char *s;
1347
1348 /* Skip selected directory levels. */
1349 for (s = fname + 1; *s != '\0' && level < prefix_strip; s++)
1350 if (IS_DIR_SEPARATOR(*s))
1351 {
1352 fname = s;
1353 level++;
1354 }
1355 }
1356
1357 /* Update complete filename. */
1358 strncpy (path_up, fname, PATH_MAX);
1359 path_up[PATH_MAX] = '\0';
1360
1361 filename = path;
1362 reloc = TRUE;
1363 }
1364 else
1365 reloc = FALSE;
1366
1367 if (with_line_numbers)
1368 {
1369 if (functionname != NULL
1370 && (prev_functionname == NULL
1371 || strcmp (functionname, prev_functionname) != 0))
1372 printf ("%s():\n", functionname);
1373 if (linenumber > 0 && linenumber != prev_line)
1374 printf ("%s:%u\n", filename == NULL ? "???" : filename, linenumber);
1375 }
1376
1377 if (with_source_code
1378 && filename != NULL
1379 && linenumber > 0)
1380 {
1381 struct print_file_list **pp, *p;
1382 unsigned l;
1383
1384 for (pp = &print_files; *pp != NULL; pp = &(*pp)->next)
1385 if (filename_cmp ((*pp)->filename, filename) == 0)
1386 break;
1387 p = *pp;
1388
1389 if (p == NULL)
1390 {
1391 if (reloc)
1392 filename = xstrdup (filename);
1393 p = update_source_path (filename);
1394 }
1395
1396 if (p != NULL && linenumber != p->last_line)
1397 {
1398 if (file_start_context && p->first)
1399 l = 1;
1400 else
1401 {
1402 l = linenumber - SHOW_PRECEDING_CONTEXT_LINES;
1403 if (l >= linenumber)
1404 l = 1;
1405 if (p->last_line >= l && p->last_line <= linenumber)
1406 l = p->last_line + 1;
1407 }
1408 dump_lines (p, l, linenumber);
1409 p->last_line = linenumber;
1410 p->first = 0;
1411 }
1412 }
1413
1414 if (functionname != NULL
1415 && (prev_functionname == NULL
1416 || strcmp (functionname, prev_functionname) != 0))
1417 {
1418 if (prev_functionname != NULL)
1419 free (prev_functionname);
1420 prev_functionname = (char *) xmalloc (strlen (functionname) + 1);
1421 strcpy (prev_functionname, functionname);
1422 }
1423
1424 if (linenumber > 0 && linenumber != prev_line)
1425 prev_line = linenumber;
1426 }
1427
1428 /* Pseudo FILE object for strings. */
1429 typedef struct
1430 {
1431 char *buffer;
1432 size_t pos;
1433 size_t alloc;
1434 } SFILE;
1435
1436 /* sprintf to a "stream". */
1437
1438 static int ATTRIBUTE_PRINTF_2
1439 objdump_sprintf (SFILE *f, const char *format, ...)
1440 {
1441 size_t n;
1442 va_list args;
1443
1444 while (1)
1445 {
1446 size_t space = f->alloc - f->pos;
1447
1448 va_start (args, format);
1449 n = vsnprintf (f->buffer + f->pos, space, format, args);
1450 va_end (args);
1451
1452 if (space > n)
1453 break;
1454
1455 f->alloc = (f->alloc + n) * 2;
1456 f->buffer = (char *) xrealloc (f->buffer, f->alloc);
1457 }
1458 f->pos += n;
1459
1460 return n;
1461 }
1462
1463 /* The number of zeroes we want to see before we start skipping them.
1464 The number is arbitrarily chosen. */
1465
1466 #define DEFAULT_SKIP_ZEROES 8
1467
1468 /* The number of zeroes to skip at the end of a section. If the
1469 number of zeroes at the end is between SKIP_ZEROES_AT_END and
1470 SKIP_ZEROES, they will be disassembled. If there are fewer than
1471 SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic
1472 attempt to avoid disassembling zeroes inserted by section
1473 alignment. */
1474
1475 #define DEFAULT_SKIP_ZEROES_AT_END 3
1476
1477 /* Disassemble some data in memory between given values. */
1478
1479 static void
1480 disassemble_bytes (struct disassemble_info * inf,
1481 disassembler_ftype disassemble_fn,
1482 bfd_boolean insns,
1483 bfd_byte * data,
1484 bfd_vma start_offset,
1485 bfd_vma stop_offset,
1486 bfd_vma rel_offset,
1487 arelent *** relppp,
1488 arelent ** relppend)
1489 {
1490 struct objdump_disasm_info *aux;
1491 asection *section;
1492 int octets_per_line;
1493 int skip_addr_chars;
1494 bfd_vma addr_offset;
1495 unsigned int opb = inf->octets_per_byte;
1496 unsigned int skip_zeroes = inf->skip_zeroes;
1497 unsigned int skip_zeroes_at_end = inf->skip_zeroes_at_end;
1498 int octets = opb;
1499 SFILE sfile;
1500
1501 aux = (struct objdump_disasm_info *) inf->application_data;
1502 section = aux->sec;
1503
1504 sfile.alloc = 120;
1505 sfile.buffer = (char *) xmalloc (sfile.alloc);
1506 sfile.pos = 0;
1507
1508 if (insn_width)
1509 octets_per_line = insn_width;
1510 else if (insns)
1511 octets_per_line = 4;
1512 else
1513 octets_per_line = 16;
1514
1515 /* Figure out how many characters to skip at the start of an
1516 address, to make the disassembly look nicer. We discard leading
1517 zeroes in chunks of 4, ensuring that there is always a leading
1518 zero remaining. */
1519 skip_addr_chars = 0;
1520 if (! prefix_addresses)
1521 {
1522 char buf[30];
1523
1524 bfd_sprintf_vma (aux->abfd, buf, section->vma + section->size / opb);
1525
1526 while (buf[skip_addr_chars] == '0')
1527 ++skip_addr_chars;
1528
1529 /* Don't discard zeros on overflow. */
1530 if (buf[skip_addr_chars] == '\0' && section->vma != 0)
1531 skip_addr_chars = 0;
1532
1533 if (skip_addr_chars != 0)
1534 skip_addr_chars = (skip_addr_chars - 1) & -4;
1535 }
1536
1537 inf->insn_info_valid = 0;
1538
1539 addr_offset = start_offset;
1540 while (addr_offset < stop_offset)
1541 {
1542 bfd_vma z;
1543 bfd_boolean need_nl = FALSE;
1544 int previous_octets;
1545
1546 /* Remember the length of the previous instruction. */
1547 previous_octets = octets;
1548 octets = 0;
1549
1550 /* Make sure we don't use relocs from previous instructions. */
1551 aux->reloc = NULL;
1552
1553 /* If we see more than SKIP_ZEROES octets of zeroes, we just
1554 print `...'. */
1555 for (z = addr_offset * opb; z < stop_offset * opb; z++)
1556 if (data[z] != 0)
1557 break;
1558 if (! disassemble_zeroes
1559 && (inf->insn_info_valid == 0
1560 || inf->branch_delay_insns == 0)
1561 && (z - addr_offset * opb >= skip_zeroes
1562 || (z == stop_offset * opb &&
1563 z - addr_offset * opb < skip_zeroes_at_end)))
1564 {
1565 /* If there are more nonzero octets to follow, we only skip
1566 zeroes in multiples of 4, to try to avoid running over
1567 the start of an instruction which happens to start with
1568 zero. */
1569 if (z != stop_offset * opb)
1570 z = addr_offset * opb + ((z - addr_offset * opb) &~ 3);
1571
1572 octets = z - addr_offset * opb;
1573
1574 /* If we are going to display more data, and we are displaying
1575 file offsets, then tell the user how many zeroes we skip
1576 and the file offset from where we resume dumping. */
1577 if (display_file_offsets && ((addr_offset + (octets / opb)) < stop_offset))
1578 printf ("\t... (skipping %d zeroes, resuming at file offset: 0x%lx)\n",
1579 octets / opb,
1580 (unsigned long) (section->filepos
1581 + (addr_offset + (octets / opb))));
1582 else
1583 printf ("\t...\n");
1584 }
1585 else
1586 {
1587 char buf[50];
1588 int bpc = 0;
1589 int pb = 0;
1590
1591 if (with_line_numbers || with_source_code)
1592 show_line (aux->abfd, section, addr_offset);
1593
1594 if (! prefix_addresses)
1595 {
1596 char *s;
1597
1598 bfd_sprintf_vma (aux->abfd, buf, section->vma + addr_offset);
1599 for (s = buf + skip_addr_chars; *s == '0'; s++)
1600 *s = ' ';
1601 if (*s == '\0')
1602 *--s = '0';
1603 printf ("%s:\t", buf + skip_addr_chars);
1604 }
1605 else
1606 {
1607 aux->require_sec = TRUE;
1608 objdump_print_address (section->vma + addr_offset, inf);
1609 aux->require_sec = FALSE;
1610 putchar (' ');
1611 }
1612
1613 if (insns)
1614 {
1615 sfile.pos = 0;
1616 inf->fprintf_func = (fprintf_ftype) objdump_sprintf;
1617 inf->stream = &sfile;
1618 inf->bytes_per_line = 0;
1619 inf->bytes_per_chunk = 0;
1620 inf->flags = disassemble_all ? DISASSEMBLE_DATA : 0;
1621 if (machine)
1622 inf->flags |= USER_SPECIFIED_MACHINE_TYPE;
1623
1624 if (inf->disassembler_needs_relocs
1625 && (bfd_get_file_flags (aux->abfd) & EXEC_P) == 0
1626 && (bfd_get_file_flags (aux->abfd) & DYNAMIC) == 0
1627 && *relppp < relppend)
1628 {
1629 bfd_signed_vma distance_to_rel;
1630
1631 distance_to_rel = (**relppp)->address
1632 - (rel_offset + addr_offset);
1633
1634 /* Check to see if the current reloc is associated with
1635 the instruction that we are about to disassemble. */
1636 if (distance_to_rel == 0
1637 /* FIXME: This is wrong. We are trying to catch
1638 relocs that are addressed part way through the
1639 current instruction, as might happen with a packed
1640 VLIW instruction. Unfortunately we do not know the
1641 length of the current instruction since we have not
1642 disassembled it yet. Instead we take a guess based
1643 upon the length of the previous instruction. The
1644 proper solution is to have a new target-specific
1645 disassembler function which just returns the length
1646 of an instruction at a given address without trying
1647 to display its disassembly. */
1648 || (distance_to_rel > 0
1649 && distance_to_rel < (bfd_signed_vma) (previous_octets/ opb)))
1650 {
1651 inf->flags |= INSN_HAS_RELOC;
1652 aux->reloc = **relppp;
1653 }
1654 }
1655
1656 octets = (*disassemble_fn) (section->vma + addr_offset, inf);
1657 inf->fprintf_func = (fprintf_ftype) fprintf;
1658 inf->stream = stdout;
1659 if (insn_width == 0 && inf->bytes_per_line != 0)
1660 octets_per_line = inf->bytes_per_line;
1661 if (octets < (int) opb)
1662 {
1663 if (sfile.pos)
1664 printf ("%s\n", sfile.buffer);
1665 if (octets >= 0)
1666 {
1667 non_fatal (_("disassemble_fn returned length %d"),
1668 octets);
1669 exit_status = 1;
1670 }
1671 break;
1672 }
1673 }
1674 else
1675 {
1676 bfd_vma j;
1677
1678 octets = octets_per_line;
1679 if (addr_offset + octets / opb > stop_offset)
1680 octets = (stop_offset - addr_offset) * opb;
1681
1682 for (j = addr_offset * opb; j < addr_offset * opb + octets; ++j)
1683 {
1684 if (ISPRINT (data[j]))
1685 buf[j - addr_offset * opb] = data[j];
1686 else
1687 buf[j - addr_offset * opb] = '.';
1688 }
1689 buf[j - addr_offset * opb] = '\0';
1690 }
1691
1692 if (prefix_addresses
1693 ? show_raw_insn > 0
1694 : show_raw_insn >= 0)
1695 {
1696 bfd_vma j;
1697
1698 /* If ! prefix_addresses and ! wide_output, we print
1699 octets_per_line octets per line. */
1700 pb = octets;
1701 if (pb > octets_per_line && ! prefix_addresses && ! wide_output)
1702 pb = octets_per_line;
1703
1704 if (inf->bytes_per_chunk)
1705 bpc = inf->bytes_per_chunk;
1706 else
1707 bpc = 1;
1708
1709 for (j = addr_offset * opb; j < addr_offset * opb + pb; j += bpc)
1710 {
1711 int k;
1712
1713 if (bpc > 1 && inf->display_endian == BFD_ENDIAN_LITTLE)
1714 {
1715 for (k = bpc - 1; k >= 0; k--)
1716 printf ("%02x", (unsigned) data[j + k]);
1717 putchar (' ');
1718 }
1719 else
1720 {
1721 for (k = 0; k < bpc; k++)
1722 printf ("%02x", (unsigned) data[j + k]);
1723 putchar (' ');
1724 }
1725 }
1726
1727 for (; pb < octets_per_line; pb += bpc)
1728 {
1729 int k;
1730
1731 for (k = 0; k < bpc; k++)
1732 printf (" ");
1733 putchar (' ');
1734 }
1735
1736 /* Separate raw data from instruction by extra space. */
1737 if (insns)
1738 putchar ('\t');
1739 else
1740 printf (" ");
1741 }
1742
1743 if (! insns)
1744 printf ("%s", buf);
1745 else if (sfile.pos)
1746 printf ("%s", sfile.buffer);
1747
1748 if (prefix_addresses
1749 ? show_raw_insn > 0
1750 : show_raw_insn >= 0)
1751 {
1752 while (pb < octets)
1753 {
1754 bfd_vma j;
1755 char *s;
1756
1757 putchar ('\n');
1758 j = addr_offset * opb + pb;
1759
1760 bfd_sprintf_vma (aux->abfd, buf, section->vma + j / opb);
1761 for (s = buf + skip_addr_chars; *s == '0'; s++)
1762 *s = ' ';
1763 if (*s == '\0')
1764 *--s = '0';
1765 printf ("%s:\t", buf + skip_addr_chars);
1766
1767 pb += octets_per_line;
1768 if (pb > octets)
1769 pb = octets;
1770 for (; j < addr_offset * opb + pb; j += bpc)
1771 {
1772 int k;
1773
1774 if (bpc > 1 && inf->display_endian == BFD_ENDIAN_LITTLE)
1775 {
1776 for (k = bpc - 1; k >= 0; k--)
1777 printf ("%02x", (unsigned) data[j + k]);
1778 putchar (' ');
1779 }
1780 else
1781 {
1782 for (k = 0; k < bpc; k++)
1783 printf ("%02x", (unsigned) data[j + k]);
1784 putchar (' ');
1785 }
1786 }
1787 }
1788 }
1789
1790 if (!wide_output)
1791 putchar ('\n');
1792 else
1793 need_nl = TRUE;
1794 }
1795
1796 while ((*relppp) < relppend
1797 && (**relppp)->address < rel_offset + addr_offset + octets / opb)
1798 {
1799 if (dump_reloc_info || dump_dynamic_reloc_info)
1800 {
1801 arelent *q;
1802
1803 q = **relppp;
1804
1805 if (wide_output)
1806 putchar ('\t');
1807 else
1808 printf ("\t\t\t");
1809
1810 objdump_print_value (section->vma - rel_offset + q->address,
1811 inf, TRUE);
1812
1813 if (q->howto == NULL)
1814 printf (": *unknown*\t");
1815 else if (q->howto->name)
1816 printf (": %s\t", q->howto->name);
1817 else
1818 printf (": %d\t", q->howto->type);
1819
1820 if (q->sym_ptr_ptr == NULL || *q->sym_ptr_ptr == NULL)
1821 printf ("*unknown*");
1822 else
1823 {
1824 const char *sym_name;
1825
1826 sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
1827 if (sym_name != NULL && *sym_name != '\0')
1828 objdump_print_symname (aux->abfd, inf, *q->sym_ptr_ptr);
1829 else
1830 {
1831 asection *sym_sec;
1832
1833 sym_sec = bfd_get_section (*q->sym_ptr_ptr);
1834 sym_name = bfd_get_section_name (aux->abfd, sym_sec);
1835 if (sym_name == NULL || *sym_name == '\0')
1836 sym_name = "*unknown*";
1837 printf ("%s", sym_name);
1838 }
1839 }
1840
1841 if (q->addend)
1842 {
1843 bfd_signed_vma addend = q->addend;
1844 if (addend < 0)
1845 {
1846 printf ("-0x");
1847 addend = -addend;
1848 }
1849 else
1850 printf ("+0x");
1851 objdump_print_value (addend, inf, TRUE);
1852 }
1853
1854 printf ("\n");
1855 need_nl = FALSE;
1856 }
1857 ++(*relppp);
1858 }
1859
1860 if (need_nl)
1861 printf ("\n");
1862
1863 addr_offset += octets / opb;
1864 }
1865
1866 free (sfile.buffer);
1867 }
1868
1869 static void
1870 disassemble_section (bfd *abfd, asection *section, void *inf)
1871 {
1872 const struct elf_backend_data * bed;
1873 bfd_vma sign_adjust = 0;
1874 struct disassemble_info * pinfo = (struct disassemble_info *) inf;
1875 struct objdump_disasm_info * paux;
1876 unsigned int opb = pinfo->octets_per_byte;
1877 bfd_byte * data = NULL;
1878 bfd_size_type datasize = 0;
1879 arelent ** rel_pp = NULL;
1880 arelent ** rel_ppstart = NULL;
1881 arelent ** rel_ppend;
1882 unsigned long stop_offset;
1883 asymbol * sym = NULL;
1884 long place = 0;
1885 long rel_count;
1886 bfd_vma rel_offset;
1887 unsigned long addr_offset;
1888
1889 /* Sections that do not contain machine
1890 code are not normally disassembled. */
1891 if (! disassemble_all
1892 && only_list == NULL
1893 && ((section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
1894 != (SEC_CODE | SEC_HAS_CONTENTS)))
1895 return;
1896
1897 if (! process_section_p (section))
1898 return;
1899
1900 datasize = bfd_get_section_size (section);
1901 if (datasize == 0)
1902 return;
1903
1904 /* Decide which set of relocs to use. Load them if necessary. */
1905 paux = (struct objdump_disasm_info *) pinfo->application_data;
1906 if (paux->dynrelbuf)
1907 {
1908 rel_pp = paux->dynrelbuf;
1909 rel_count = paux->dynrelcount;
1910 /* Dynamic reloc addresses are absolute, non-dynamic are section
1911 relative. REL_OFFSET specifies the reloc address corresponding
1912 to the start of this section. */
1913 rel_offset = section->vma;
1914 }
1915 else
1916 {
1917 rel_count = 0;
1918 rel_pp = NULL;
1919 rel_offset = 0;
1920
1921 if ((section->flags & SEC_RELOC) != 0
1922 && (dump_reloc_info || pinfo->disassembler_needs_relocs))
1923 {
1924 long relsize;
1925
1926 relsize = bfd_get_reloc_upper_bound (abfd, section);
1927 if (relsize < 0)
1928 bfd_fatal (bfd_get_filename (abfd));
1929
1930 if (relsize > 0)
1931 {
1932 rel_ppstart = rel_pp = (arelent **) xmalloc (relsize);
1933 rel_count = bfd_canonicalize_reloc (abfd, section, rel_pp, syms);
1934 if (rel_count < 0)
1935 bfd_fatal (bfd_get_filename (abfd));
1936
1937 /* Sort the relocs by address. */
1938 qsort (rel_pp, rel_count, sizeof (arelent *), compare_relocs);
1939 }
1940 }
1941 }
1942 rel_ppend = rel_pp + rel_count;
1943
1944 data = (bfd_byte *) xmalloc (datasize);
1945
1946 bfd_get_section_contents (abfd, section, data, 0, datasize);
1947
1948 paux->sec = section;
1949 pinfo->buffer = data;
1950 pinfo->buffer_vma = section->vma;
1951 pinfo->buffer_length = datasize;
1952 pinfo->section = section;
1953
1954 if (start_address == (bfd_vma) -1
1955 || start_address < pinfo->buffer_vma)
1956 addr_offset = 0;
1957 else
1958 addr_offset = start_address - pinfo->buffer_vma;
1959
1960 if (stop_address == (bfd_vma) -1)
1961 stop_offset = datasize / opb;
1962 else
1963 {
1964 if (stop_address < pinfo->buffer_vma)
1965 stop_offset = 0;
1966 else
1967 stop_offset = stop_address - pinfo->buffer_vma;
1968 if (stop_offset > pinfo->buffer_length / opb)
1969 stop_offset = pinfo->buffer_length / opb;
1970 }
1971
1972 /* Skip over the relocs belonging to addresses below the
1973 start address. */
1974 while (rel_pp < rel_ppend
1975 && (*rel_pp)->address < rel_offset + addr_offset)
1976 ++rel_pp;
1977
1978 if (addr_offset < stop_offset)
1979 printf (_("\nDisassembly of section %s:\n"), section->name);
1980
1981 /* Find the nearest symbol forwards from our current position. */
1982 paux->require_sec = TRUE;
1983 sym = (asymbol *) find_symbol_for_address (section->vma + addr_offset,
1984 (struct disassemble_info *) inf,
1985 &place);
1986 paux->require_sec = FALSE;
1987
1988 /* PR 9774: If the target used signed addresses then we must make
1989 sure that we sign extend the value that we calculate for 'addr'
1990 in the loop below. */
1991 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
1992 && (bed = get_elf_backend_data (abfd)) != NULL
1993 && bed->sign_extend_vma)
1994 sign_adjust = (bfd_vma) 1 << (bed->s->arch_size - 1);
1995
1996 /* Disassemble a block of instructions up to the address associated with
1997 the symbol we have just found. Then print the symbol and find the
1998 next symbol on. Repeat until we have disassembled the entire section
1999 or we have reached the end of the address range we are interested in. */
2000 while (addr_offset < stop_offset)
2001 {
2002 bfd_vma addr;
2003 asymbol *nextsym;
2004 unsigned long nextstop_offset;
2005 bfd_boolean insns;
2006
2007 addr = section->vma + addr_offset;
2008 addr = ((addr & ((sign_adjust << 1) - 1)) ^ sign_adjust) - sign_adjust;
2009
2010 if (sym != NULL && bfd_asymbol_value (sym) <= addr)
2011 {
2012 int x;
2013
2014 for (x = place;
2015 (x < sorted_symcount
2016 && (bfd_asymbol_value (sorted_syms[x]) <= addr));
2017 ++x)
2018 continue;
2019
2020 pinfo->symbols = sorted_syms + place;
2021 pinfo->num_symbols = x - place;
2022 pinfo->symtab_pos = place;
2023 }
2024 else
2025 {
2026 pinfo->symbols = NULL;
2027 pinfo->num_symbols = 0;
2028 pinfo->symtab_pos = -1;
2029 }
2030
2031 if (! prefix_addresses)
2032 {
2033 pinfo->fprintf_func (pinfo->stream, "\n");
2034 objdump_print_addr_with_sym (abfd, section, sym, addr,
2035 pinfo, FALSE);
2036 pinfo->fprintf_func (pinfo->stream, ":\n");
2037 }
2038
2039 if (sym != NULL && bfd_asymbol_value (sym) > addr)
2040 nextsym = sym;
2041 else if (sym == NULL)
2042 nextsym = NULL;
2043 else
2044 {
2045 #define is_valid_next_sym(SYM) \
2046 ((SYM)->section == section \
2047 && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
2048 && pinfo->symbol_is_valid (SYM, pinfo))
2049
2050 /* Search forward for the next appropriate symbol in
2051 SECTION. Note that all the symbols are sorted
2052 together into one big array, and that some sections
2053 may have overlapping addresses. */
2054 while (place < sorted_symcount
2055 && ! is_valid_next_sym (sorted_syms [place]))
2056 ++place;
2057
2058 if (place >= sorted_symcount)
2059 nextsym = NULL;
2060 else
2061 nextsym = sorted_syms[place];
2062 }
2063
2064 if (sym != NULL && bfd_asymbol_value (sym) > addr)
2065 nextstop_offset = bfd_asymbol_value (sym) - section->vma;
2066 else if (nextsym == NULL)
2067 nextstop_offset = stop_offset;
2068 else
2069 nextstop_offset = bfd_asymbol_value (nextsym) - section->vma;
2070
2071 if (nextstop_offset > stop_offset
2072 || nextstop_offset <= addr_offset)
2073 nextstop_offset = stop_offset;
2074
2075 /* If a symbol is explicitly marked as being an object
2076 rather than a function, just dump the bytes without
2077 disassembling them. */
2078 if (disassemble_all
2079 || sym == NULL
2080 || sym->section != section
2081 || bfd_asymbol_value (sym) > addr
2082 || ((sym->flags & BSF_OBJECT) == 0
2083 && (strstr (bfd_asymbol_name (sym), "gnu_compiled")
2084 == NULL)
2085 && (strstr (bfd_asymbol_name (sym), "gcc2_compiled")
2086 == NULL))
2087 || (sym->flags & BSF_FUNCTION) != 0)
2088 insns = TRUE;
2089 else
2090 insns = FALSE;
2091
2092 disassemble_bytes (pinfo, paux->disassemble_fn, insns, data,
2093 addr_offset, nextstop_offset,
2094 rel_offset, &rel_pp, rel_ppend);
2095
2096 addr_offset = nextstop_offset;
2097 sym = nextsym;
2098 }
2099
2100 free (data);
2101
2102 if (rel_ppstart != NULL)
2103 free (rel_ppstart);
2104 }
2105
2106 /* Disassemble the contents of an object file. */
2107
2108 static void
2109 disassemble_data (bfd *abfd)
2110 {
2111 struct disassemble_info disasm_info;
2112 struct objdump_disasm_info aux;
2113 long i;
2114
2115 print_files = NULL;
2116 prev_functionname = NULL;
2117 prev_line = -1;
2118
2119 /* We make a copy of syms to sort. We don't want to sort syms
2120 because that will screw up the relocs. */
2121 sorted_symcount = symcount ? symcount : dynsymcount;
2122 sorted_syms = (asymbol **) xmalloc ((sorted_symcount + synthcount)
2123 * sizeof (asymbol *));
2124 memcpy (sorted_syms, symcount ? syms : dynsyms,
2125 sorted_symcount * sizeof (asymbol *));
2126
2127 sorted_symcount = remove_useless_symbols (sorted_syms, sorted_symcount);
2128
2129 for (i = 0; i < synthcount; ++i)
2130 {
2131 sorted_syms[sorted_symcount] = synthsyms + i;
2132 ++sorted_symcount;
2133 }
2134
2135 /* Sort the symbols into section and symbol order. */
2136 qsort (sorted_syms, sorted_symcount, sizeof (asymbol *), compare_symbols);
2137
2138 init_disassemble_info (&disasm_info, stdout, (fprintf_ftype) fprintf);
2139
2140 disasm_info.application_data = (void *) &aux;
2141 aux.abfd = abfd;
2142 aux.require_sec = FALSE;
2143 aux.dynrelbuf = NULL;
2144 aux.dynrelcount = 0;
2145 aux.reloc = NULL;
2146
2147 disasm_info.print_address_func = objdump_print_address;
2148 disasm_info.symbol_at_address_func = objdump_symbol_at_address;
2149
2150 if (machine != NULL)
2151 {
2152 const bfd_arch_info_type *inf = bfd_scan_arch (machine);
2153
2154 if (inf == NULL)
2155 fatal (_("can't use supplied machine %s"), machine);
2156
2157 abfd->arch_info = inf;
2158 }
2159
2160 if (endian != BFD_ENDIAN_UNKNOWN)
2161 {
2162 struct bfd_target *xvec;
2163
2164 xvec = (struct bfd_target *) xmalloc (sizeof (struct bfd_target));
2165 memcpy (xvec, abfd->xvec, sizeof (struct bfd_target));
2166 xvec->byteorder = endian;
2167 abfd->xvec = xvec;
2168 }
2169
2170 /* Use libopcodes to locate a suitable disassembler. */
2171 aux.disassemble_fn = disassembler (abfd);
2172 if (!aux.disassemble_fn)
2173 {
2174 non_fatal (_("can't disassemble for architecture %s\n"),
2175 bfd_printable_arch_mach (bfd_get_arch (abfd), 0));
2176 exit_status = 1;
2177 return;
2178 }
2179
2180 disasm_info.flavour = bfd_get_flavour (abfd);
2181 disasm_info.arch = bfd_get_arch (abfd);
2182 disasm_info.mach = bfd_get_mach (abfd);
2183 disasm_info.disassembler_options = disassembler_options;
2184 disasm_info.octets_per_byte = bfd_octets_per_byte (abfd);
2185 disasm_info.skip_zeroes = DEFAULT_SKIP_ZEROES;
2186 disasm_info.skip_zeroes_at_end = DEFAULT_SKIP_ZEROES_AT_END;
2187 disasm_info.disassembler_needs_relocs = FALSE;
2188
2189 if (bfd_big_endian (abfd))
2190 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_BIG;
2191 else if (bfd_little_endian (abfd))
2192 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_LITTLE;
2193 else
2194 /* ??? Aborting here seems too drastic. We could default to big or little
2195 instead. */
2196 disasm_info.endian = BFD_ENDIAN_UNKNOWN;
2197
2198 /* Allow the target to customize the info structure. */
2199 disassemble_init_for_target (& disasm_info);
2200
2201 /* Pre-load the dynamic relocs if we are going
2202 to be dumping them along with the disassembly. */
2203 if (dump_dynamic_reloc_info)
2204 {
2205 long relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2206
2207 if (relsize < 0)
2208 bfd_fatal (bfd_get_filename (abfd));
2209
2210 if (relsize > 0)
2211 {
2212 aux.dynrelbuf = (arelent **) xmalloc (relsize);
2213 aux.dynrelcount = bfd_canonicalize_dynamic_reloc (abfd,
2214 aux.dynrelbuf,
2215 dynsyms);
2216 if (aux.dynrelcount < 0)
2217 bfd_fatal (bfd_get_filename (abfd));
2218
2219 /* Sort the relocs by address. */
2220 qsort (aux.dynrelbuf, aux.dynrelcount, sizeof (arelent *),
2221 compare_relocs);
2222 }
2223 }
2224 disasm_info.symtab = sorted_syms;
2225 disasm_info.symtab_size = sorted_symcount;
2226
2227 bfd_map_over_sections (abfd, disassemble_section, & disasm_info);
2228
2229 if (aux.dynrelbuf != NULL)
2230 free (aux.dynrelbuf);
2231 free (sorted_syms);
2232 }
2233 \f
2234 static int
2235 load_specific_debug_section (enum dwarf_section_display_enum debug,
2236 asection *sec, void *file)
2237 {
2238 struct dwarf_section *section = &debug_displays [debug].section;
2239 bfd *abfd = (bfd *) file;
2240 bfd_boolean ret;
2241
2242 /* If it is already loaded, do nothing. */
2243 if (section->start != NULL)
2244 return 1;
2245
2246 section->address = 0;
2247 section->size = bfd_get_section_size (sec);
2248 section->start = NULL;
2249 ret = bfd_get_full_section_contents (abfd, sec, &section->start);
2250
2251 if (! ret)
2252 {
2253 free_debug_section (debug);
2254 printf (_("\nCan't get contents for section '%s'.\n"),
2255 section->name);
2256 return 0;
2257 }
2258
2259 if (is_relocatable && debug_displays [debug].relocate)
2260 {
2261 /* We want to relocate the data we've already read (and
2262 decompressed), so we store a pointer to the data in
2263 the bfd_section, and tell it that the contents are
2264 already in memory. */
2265 sec->contents = section->start;
2266 sec->flags |= SEC_IN_MEMORY;
2267 sec->size = section->size;
2268
2269 ret = bfd_simple_get_relocated_section_contents (abfd,
2270 sec,
2271 section->start,
2272 syms) != NULL;
2273
2274 if (! ret)
2275 {
2276 free_debug_section (debug);
2277 printf (_("\nCan't get contents for section '%s'.\n"),
2278 section->name);
2279 return 0;
2280 }
2281 }
2282
2283 return 1;
2284 }
2285
2286 int
2287 load_debug_section (enum dwarf_section_display_enum debug, void *file)
2288 {
2289 struct dwarf_section *section = &debug_displays [debug].section;
2290 bfd *abfd = (bfd *) file;
2291 asection *sec;
2292
2293 /* If it is already loaded, do nothing. */
2294 if (section->start != NULL)
2295 return 1;
2296
2297 /* Locate the debug section. */
2298 sec = bfd_get_section_by_name (abfd, section->uncompressed_name);
2299 if (sec != NULL)
2300 section->name = section->uncompressed_name;
2301 else
2302 {
2303 sec = bfd_get_section_by_name (abfd, section->compressed_name);
2304 if (sec != NULL)
2305 section->name = section->compressed_name;
2306 }
2307 if (sec == NULL)
2308 return 0;
2309
2310 return load_specific_debug_section (debug, sec, file);
2311 }
2312
2313 void
2314 free_debug_section (enum dwarf_section_display_enum debug)
2315 {
2316 struct dwarf_section *section = &debug_displays [debug].section;
2317
2318 if (section->start == NULL)
2319 return;
2320
2321 free ((char *) section->start);
2322 section->start = NULL;
2323 section->address = 0;
2324 section->size = 0;
2325 }
2326
2327 static void
2328 dump_dwarf_section (bfd *abfd, asection *section,
2329 void *arg ATTRIBUTE_UNUSED)
2330 {
2331 const char *name = bfd_get_section_name (abfd, section);
2332 const char *match;
2333 int i;
2334
2335 if (CONST_STRNEQ (name, ".gnu.linkonce.wi."))
2336 match = ".debug_info";
2337 else
2338 match = name;
2339
2340 for (i = 0; i < max; i++)
2341 if ((strcmp (debug_displays [i].section.uncompressed_name, match) == 0
2342 || strcmp (debug_displays [i].section.compressed_name, match) == 0)
2343 && debug_displays [i].enabled != NULL
2344 && *debug_displays [i].enabled)
2345 {
2346 struct dwarf_section *sec = &debug_displays [i].section;
2347
2348 if (strcmp (sec->uncompressed_name, match) == 0)
2349 sec->name = sec->uncompressed_name;
2350 else
2351 sec->name = sec->compressed_name;
2352 if (load_specific_debug_section ((enum dwarf_section_display_enum) i,
2353 section, abfd))
2354 {
2355 debug_displays [i].display (sec, abfd);
2356
2357 if (i != info && i != abbrev)
2358 free_debug_section ((enum dwarf_section_display_enum) i);
2359 }
2360 break;
2361 }
2362 }
2363
2364 /* Dump the dwarf debugging information. */
2365
2366 static void
2367 dump_dwarf (bfd *abfd)
2368 {
2369 is_relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2370
2371 eh_addr_size = bfd_arch_bits_per_address (abfd) / 8;
2372
2373 if (bfd_big_endian (abfd))
2374 byte_get = byte_get_big_endian;
2375 else if (bfd_little_endian (abfd))
2376 byte_get = byte_get_little_endian;
2377 else
2378 abort ();
2379
2380 switch (bfd_get_arch (abfd))
2381 {
2382 case bfd_arch_i386:
2383 switch (bfd_get_mach (abfd))
2384 {
2385 case bfd_mach_x86_64:
2386 case bfd_mach_x86_64_intel_syntax:
2387 init_dwarf_regnames_x86_64 ();
2388 break;
2389
2390 default:
2391 init_dwarf_regnames_i386 ();
2392 break;
2393 }
2394 break;
2395
2396 default:
2397 break;
2398 }
2399
2400 bfd_map_over_sections (abfd, dump_dwarf_section, NULL);
2401
2402 free_debug_memory ();
2403 }
2404 \f
2405 /* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
2406 it. Return NULL on failure. */
2407
2408 static char *
2409 read_section_stabs (bfd *abfd, const char *sect_name, bfd_size_type *size_ptr)
2410 {
2411 asection *stabsect;
2412 bfd_size_type size;
2413 char *contents;
2414
2415 stabsect = bfd_get_section_by_name (abfd, sect_name);
2416 if (stabsect == NULL)
2417 {
2418 printf (_("No %s section present\n\n"), sect_name);
2419 return FALSE;
2420 }
2421
2422 size = bfd_section_size (abfd, stabsect);
2423 contents = (char *) xmalloc (size);
2424
2425 if (! bfd_get_section_contents (abfd, stabsect, contents, 0, size))
2426 {
2427 non_fatal (_("reading %s section of %s failed: %s"),
2428 sect_name, bfd_get_filename (abfd),
2429 bfd_errmsg (bfd_get_error ()));
2430 exit_status = 1;
2431 free (contents);
2432 return NULL;
2433 }
2434
2435 *size_ptr = size;
2436
2437 return contents;
2438 }
2439
2440 /* Stabs entries use a 12 byte format:
2441 4 byte string table index
2442 1 byte stab type
2443 1 byte stab other field
2444 2 byte stab desc field
2445 4 byte stab value
2446 FIXME: This will have to change for a 64 bit object format. */
2447
2448 #define STRDXOFF (0)
2449 #define TYPEOFF (4)
2450 #define OTHEROFF (5)
2451 #define DESCOFF (6)
2452 #define VALOFF (8)
2453 #define STABSIZE (12)
2454
2455 /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
2456 using string table section STRSECT_NAME (in `strtab'). */
2457
2458 static void
2459 print_section_stabs (bfd *abfd,
2460 const char *stabsect_name,
2461 unsigned *string_offset_ptr)
2462 {
2463 int i;
2464 unsigned file_string_table_offset = 0;
2465 unsigned next_file_string_table_offset = *string_offset_ptr;
2466 bfd_byte *stabp, *stabs_end;
2467
2468 stabp = stabs;
2469 stabs_end = stabp + stab_size;
2470
2471 printf (_("Contents of %s section:\n\n"), stabsect_name);
2472 printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
2473
2474 /* Loop through all symbols and print them.
2475
2476 We start the index at -1 because there is a dummy symbol on
2477 the front of stabs-in-{coff,elf} sections that supplies sizes. */
2478 for (i = -1; stabp < stabs_end; stabp += STABSIZE, i++)
2479 {
2480 const char *name;
2481 unsigned long strx;
2482 unsigned char type, other;
2483 unsigned short desc;
2484 bfd_vma value;
2485
2486 strx = bfd_h_get_32 (abfd, stabp + STRDXOFF);
2487 type = bfd_h_get_8 (abfd, stabp + TYPEOFF);
2488 other = bfd_h_get_8 (abfd, stabp + OTHEROFF);
2489 desc = bfd_h_get_16 (abfd, stabp + DESCOFF);
2490 value = bfd_h_get_32 (abfd, stabp + VALOFF);
2491
2492 printf ("\n%-6d ", i);
2493 /* Either print the stab name, or, if unnamed, print its number
2494 again (makes consistent formatting for tools like awk). */
2495 name = bfd_get_stab_name (type);
2496 if (name != NULL)
2497 printf ("%-6s", name);
2498 else if (type == N_UNDF)
2499 printf ("HdrSym");
2500 else
2501 printf ("%-6d", type);
2502 printf (" %-6d %-6d ", other, desc);
2503 bfd_printf_vma (abfd, value);
2504 printf (" %-6lu", strx);
2505
2506 /* Symbols with type == 0 (N_UNDF) specify the length of the
2507 string table associated with this file. We use that info
2508 to know how to relocate the *next* file's string table indices. */
2509 if (type == N_UNDF)
2510 {
2511 file_string_table_offset = next_file_string_table_offset;
2512 next_file_string_table_offset += value;
2513 }
2514 else
2515 {
2516 /* Using the (possibly updated) string table offset, print the
2517 string (if any) associated with this symbol. */
2518 if ((strx + file_string_table_offset) < stabstr_size)
2519 printf (" %s", &strtab[strx + file_string_table_offset]);
2520 else
2521 printf (" *");
2522 }
2523 }
2524 printf ("\n\n");
2525 *string_offset_ptr = next_file_string_table_offset;
2526 }
2527
2528 typedef struct
2529 {
2530 const char * section_name;
2531 const char * string_section_name;
2532 unsigned string_offset;
2533 }
2534 stab_section_names;
2535
2536 static void
2537 find_stabs_section (bfd *abfd, asection *section, void *names)
2538 {
2539 int len;
2540 stab_section_names * sought = (stab_section_names *) names;
2541
2542 /* Check for section names for which stabsect_name is a prefix, to
2543 handle .stab.N, etc. */
2544 len = strlen (sought->section_name);
2545
2546 /* If the prefix matches, and the files section name ends with a
2547 nul or a digit, then we match. I.e., we want either an exact
2548 match or a section followed by a number. */
2549 if (strncmp (sought->section_name, section->name, len) == 0
2550 && (section->name[len] == 0
2551 || (section->name[len] == '.' && ISDIGIT (section->name[len + 1]))))
2552 {
2553 if (strtab == NULL)
2554 strtab = read_section_stabs (abfd, sought->string_section_name,
2555 &stabstr_size);
2556
2557 if (strtab)
2558 {
2559 stabs = (bfd_byte *) read_section_stabs (abfd, section->name,
2560 &stab_size);
2561 if (stabs)
2562 print_section_stabs (abfd, section->name, &sought->string_offset);
2563 }
2564 }
2565 }
2566
2567 static void
2568 dump_stabs_section (bfd *abfd, char *stabsect_name, char *strsect_name)
2569 {
2570 stab_section_names s;
2571
2572 s.section_name = stabsect_name;
2573 s.string_section_name = strsect_name;
2574 s.string_offset = 0;
2575
2576 bfd_map_over_sections (abfd, find_stabs_section, & s);
2577
2578 free (strtab);
2579 strtab = NULL;
2580 }
2581
2582 /* Dump the any sections containing stabs debugging information. */
2583
2584 static void
2585 dump_stabs (bfd *abfd)
2586 {
2587 dump_stabs_section (abfd, ".stab", ".stabstr");
2588 dump_stabs_section (abfd, ".stab.excl", ".stab.exclstr");
2589 dump_stabs_section (abfd, ".stab.index", ".stab.indexstr");
2590
2591 /* For Darwin. */
2592 dump_stabs_section (abfd, "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr");
2593
2594 dump_stabs_section (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
2595 }
2596 \f
2597 static void
2598 dump_bfd_header (bfd *abfd)
2599 {
2600 char *comma = "";
2601
2602 printf (_("architecture: %s, "),
2603 bfd_printable_arch_mach (bfd_get_arch (abfd),
2604 bfd_get_mach (abfd)));
2605 printf (_("flags 0x%08x:\n"), abfd->flags & ~BFD_FLAGS_FOR_BFD_USE_MASK);
2606
2607 #define PF(x, y) if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
2608 PF (HAS_RELOC, "HAS_RELOC");
2609 PF (EXEC_P, "EXEC_P");
2610 PF (HAS_LINENO, "HAS_LINENO");
2611 PF (HAS_DEBUG, "HAS_DEBUG");
2612 PF (HAS_SYMS, "HAS_SYMS");
2613 PF (HAS_LOCALS, "HAS_LOCALS");
2614 PF (DYNAMIC, "DYNAMIC");
2615 PF (WP_TEXT, "WP_TEXT");
2616 PF (D_PAGED, "D_PAGED");
2617 PF (BFD_IS_RELAXABLE, "BFD_IS_RELAXABLE");
2618 PF (HAS_LOAD_PAGE, "HAS_LOAD_PAGE");
2619 printf (_("\nstart address 0x"));
2620 bfd_printf_vma (abfd, abfd->start_address);
2621 printf ("\n");
2622 }
2623
2624 \f
2625 static void
2626 dump_bfd_private_header (bfd *abfd)
2627 {
2628 bfd_print_private_bfd_data (abfd, stdout);
2629 }
2630
2631 static void
2632 dump_target_specific (bfd *abfd)
2633 {
2634 const struct objdump_private_desc * const *desc;
2635 struct objdump_private_option *opt;
2636 char *e, *b;
2637
2638 /* Find the desc. */
2639 for (desc = objdump_private_vectors; *desc != NULL; desc++)
2640 if ((*desc)->filter (abfd))
2641 break;
2642
2643 if (desc == NULL)
2644 {
2645 non_fatal (_("option -P/--private not supported by this file"));
2646 return;
2647 }
2648
2649 /* Clear all options. */
2650 for (opt = (*desc)->options; opt->name; opt++)
2651 opt->selected = FALSE;
2652
2653 /* Decode options. */
2654 b = dump_private_options;
2655 do
2656 {
2657 e = strchr (b, ',');
2658
2659 if (e)
2660 *e = 0;
2661
2662 for (opt = (*desc)->options; opt->name; opt++)
2663 if (strcmp (opt->name, b) == 0)
2664 {
2665 opt->selected = TRUE;
2666 break;
2667 }
2668 if (opt->name == NULL)
2669 non_fatal (_("target specific dump '%s' not supported"), b);
2670
2671 if (e)
2672 {
2673 *e = ',';
2674 b = e + 1;
2675 }
2676 }
2677 while (e != NULL);
2678
2679 /* Dump. */
2680 (*desc)->dump (abfd);
2681 }
2682 \f
2683 /* Display a section in hexadecimal format with associated characters.
2684 Each line prefixed by the zero padded address. */
2685
2686 static void
2687 dump_section (bfd *abfd, asection *section, void *dummy ATTRIBUTE_UNUSED)
2688 {
2689 bfd_byte *data = 0;
2690 bfd_size_type datasize;
2691 bfd_size_type addr_offset;
2692 bfd_size_type start_offset;
2693 bfd_size_type stop_offset;
2694 unsigned int opb = bfd_octets_per_byte (abfd);
2695 /* Bytes per line. */
2696 const int onaline = 16;
2697 char buf[64];
2698 int count;
2699 int width;
2700
2701 if ((section->flags & SEC_HAS_CONTENTS) == 0)
2702 return;
2703
2704 if (! process_section_p (section))
2705 return;
2706
2707 if ((datasize = bfd_section_size (abfd, section)) == 0)
2708 return;
2709
2710 /* Compute the address range to display. */
2711 if (start_address == (bfd_vma) -1
2712 || start_address < section->vma)
2713 start_offset = 0;
2714 else
2715 start_offset = start_address - section->vma;
2716
2717 if (stop_address == (bfd_vma) -1)
2718 stop_offset = datasize / opb;
2719 else
2720 {
2721 if (stop_address < section->vma)
2722 stop_offset = 0;
2723 else
2724 stop_offset = stop_address - section->vma;
2725
2726 if (stop_offset > datasize / opb)
2727 stop_offset = datasize / opb;
2728 }
2729
2730 if (start_offset >= stop_offset)
2731 return;
2732
2733 printf (_("Contents of section %s:"), section->name);
2734 if (display_file_offsets)
2735 printf (_(" (Starting at file offset: 0x%lx)"),
2736 (unsigned long) (section->filepos + start_offset));
2737 printf ("\n");
2738
2739 if (!bfd_get_full_section_contents (abfd, section, &data))
2740 {
2741 non_fatal (_("Reading section failed"));
2742 return;
2743 }
2744
2745 width = 4;
2746
2747 bfd_sprintf_vma (abfd, buf, start_offset + section->vma);
2748 if (strlen (buf) >= sizeof (buf))
2749 abort ();
2750
2751 count = 0;
2752 while (buf[count] == '0' && buf[count+1] != '\0')
2753 count++;
2754 count = strlen (buf) - count;
2755 if (count > width)
2756 width = count;
2757
2758 bfd_sprintf_vma (abfd, buf, stop_offset + section->vma - 1);
2759 if (strlen (buf) >= sizeof (buf))
2760 abort ();
2761
2762 count = 0;
2763 while (buf[count] == '0' && buf[count+1] != '\0')
2764 count++;
2765 count = strlen (buf) - count;
2766 if (count > width)
2767 width = count;
2768
2769 for (addr_offset = start_offset;
2770 addr_offset < stop_offset; addr_offset += onaline / opb)
2771 {
2772 bfd_size_type j;
2773
2774 bfd_sprintf_vma (abfd, buf, (addr_offset + section->vma));
2775 count = strlen (buf);
2776 if ((size_t) count >= sizeof (buf))
2777 abort ();
2778
2779 putchar (' ');
2780 while (count < width)
2781 {
2782 putchar ('0');
2783 count++;
2784 }
2785 fputs (buf + count - width, stdout);
2786 putchar (' ');
2787
2788 for (j = addr_offset * opb;
2789 j < addr_offset * opb + onaline; j++)
2790 {
2791 if (j < stop_offset * opb)
2792 printf ("%02x", (unsigned) (data[j]));
2793 else
2794 printf (" ");
2795 if ((j & 3) == 3)
2796 printf (" ");
2797 }
2798
2799 printf (" ");
2800 for (j = addr_offset * opb;
2801 j < addr_offset * opb + onaline; j++)
2802 {
2803 if (j >= stop_offset * opb)
2804 printf (" ");
2805 else
2806 printf ("%c", ISPRINT (data[j]) ? data[j] : '.');
2807 }
2808 putchar ('\n');
2809 }
2810 free (data);
2811 }
2812
2813 /* Actually display the various requested regions. */
2814
2815 static void
2816 dump_data (bfd *abfd)
2817 {
2818 bfd_map_over_sections (abfd, dump_section, NULL);
2819 }
2820
2821 /* Should perhaps share code and display with nm? */
2822
2823 static void
2824 dump_symbols (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean dynamic)
2825 {
2826 asymbol **current;
2827 long max_count;
2828 long count;
2829
2830 if (dynamic)
2831 {
2832 current = dynsyms;
2833 max_count = dynsymcount;
2834 printf ("DYNAMIC SYMBOL TABLE:\n");
2835 }
2836 else
2837 {
2838 current = syms;
2839 max_count = symcount;
2840 printf ("SYMBOL TABLE:\n");
2841 }
2842
2843 if (max_count == 0)
2844 printf (_("no symbols\n"));
2845
2846 for (count = 0; count < max_count; count++)
2847 {
2848 bfd *cur_bfd;
2849
2850 if (*current == NULL)
2851 printf (_("no information for symbol number %ld\n"), count);
2852
2853 else if ((cur_bfd = bfd_asymbol_bfd (*current)) == NULL)
2854 printf (_("could not determine the type of symbol number %ld\n"),
2855 count);
2856
2857 else if (process_section_p ((* current)->section)
2858 && (dump_special_syms
2859 || !bfd_is_target_special_symbol (cur_bfd, *current)))
2860 {
2861 const char *name = (*current)->name;
2862
2863 if (do_demangle && name != NULL && *name != '\0')
2864 {
2865 char *alloc;
2866
2867 /* If we want to demangle the name, we demangle it
2868 here, and temporarily clobber it while calling
2869 bfd_print_symbol. FIXME: This is a gross hack. */
2870 alloc = bfd_demangle (cur_bfd, name, DMGL_ANSI | DMGL_PARAMS);
2871 if (alloc != NULL)
2872 (*current)->name = alloc;
2873 bfd_print_symbol (cur_bfd, stdout, *current,
2874 bfd_print_symbol_all);
2875 if (alloc != NULL)
2876 {
2877 (*current)->name = name;
2878 free (alloc);
2879 }
2880 }
2881 else
2882 bfd_print_symbol (cur_bfd, stdout, *current,
2883 bfd_print_symbol_all);
2884 printf ("\n");
2885 }
2886
2887 current++;
2888 }
2889 printf ("\n\n");
2890 }
2891 \f
2892 static void
2893 dump_reloc_set (bfd *abfd, asection *sec, arelent **relpp, long relcount)
2894 {
2895 arelent **p;
2896 char *last_filename, *last_functionname;
2897 unsigned int last_line;
2898
2899 /* Get column headers lined up reasonably. */
2900 {
2901 static int width;
2902
2903 if (width == 0)
2904 {
2905 char buf[30];
2906
2907 bfd_sprintf_vma (abfd, buf, (bfd_vma) -1);
2908 width = strlen (buf) - 7;
2909 }
2910 printf ("OFFSET %*s TYPE %*s VALUE \n", width, "", 12, "");
2911 }
2912
2913 last_filename = NULL;
2914 last_functionname = NULL;
2915 last_line = 0;
2916
2917 for (p = relpp; relcount && *p != NULL; p++, relcount--)
2918 {
2919 arelent *q = *p;
2920 const char *filename, *functionname;
2921 unsigned int linenumber;
2922 const char *sym_name;
2923 const char *section_name;
2924 bfd_vma addend2 = 0;
2925
2926 if (start_address != (bfd_vma) -1
2927 && q->address < start_address)
2928 continue;
2929 if (stop_address != (bfd_vma) -1
2930 && q->address > stop_address)
2931 continue;
2932
2933 if (with_line_numbers
2934 && sec != NULL
2935 && bfd_find_nearest_line (abfd, sec, syms, q->address,
2936 &filename, &functionname, &linenumber))
2937 {
2938 if (functionname != NULL
2939 && (last_functionname == NULL
2940 || strcmp (functionname, last_functionname) != 0))
2941 {
2942 printf ("%s():\n", functionname);
2943 if (last_functionname != NULL)
2944 free (last_functionname);
2945 last_functionname = xstrdup (functionname);
2946 }
2947
2948 if (linenumber > 0
2949 && (linenumber != last_line
2950 || (filename != NULL
2951 && last_filename != NULL
2952 && filename_cmp (filename, last_filename) != 0)))
2953 {
2954 printf ("%s:%u\n", filename == NULL ? "???" : filename, linenumber);
2955 last_line = linenumber;
2956 if (last_filename != NULL)
2957 free (last_filename);
2958 if (filename == NULL)
2959 last_filename = NULL;
2960 else
2961 last_filename = xstrdup (filename);
2962 }
2963 }
2964
2965 if (q->sym_ptr_ptr && *q->sym_ptr_ptr)
2966 {
2967 sym_name = (*(q->sym_ptr_ptr))->name;
2968 section_name = (*(q->sym_ptr_ptr))->section->name;
2969 }
2970 else
2971 {
2972 sym_name = NULL;
2973 section_name = NULL;
2974 }
2975
2976 bfd_printf_vma (abfd, q->address);
2977 if (q->howto == NULL)
2978 printf (" *unknown* ");
2979 else if (q->howto->name)
2980 {
2981 const char *name = q->howto->name;
2982
2983 /* R_SPARC_OLO10 relocations contain two addends.
2984 But because 'arelent' lacks enough storage to
2985 store them both, the 64-bit ELF Sparc backend
2986 records this as two relocations. One R_SPARC_LO10
2987 and one R_SPARC_13, both pointing to the same
2988 address. This is merely so that we have some
2989 place to store both addend fields.
2990
2991 Undo this transformation, otherwise the output
2992 will be confusing. */
2993 if (abfd->xvec->flavour == bfd_target_elf_flavour
2994 && elf_tdata(abfd)->elf_header->e_machine == EM_SPARCV9
2995 && relcount > 1
2996 && !strcmp (q->howto->name, "R_SPARC_LO10"))
2997 {
2998 arelent *q2 = *(p + 1);
2999 if (q2 != NULL
3000 && q2->howto
3001 && q->address == q2->address
3002 && !strcmp (q2->howto->name, "R_SPARC_13"))
3003 {
3004 name = "R_SPARC_OLO10";
3005 addend2 = q2->addend;
3006 p++;
3007 }
3008 }
3009 printf (" %-16s ", name);
3010 }
3011 else
3012 printf (" %-16d ", q->howto->type);
3013
3014 if (sym_name)
3015 {
3016 objdump_print_symname (abfd, NULL, *q->sym_ptr_ptr);
3017 }
3018 else
3019 {
3020 if (section_name == NULL)
3021 section_name = "*unknown*";
3022 printf ("[%s]", section_name);
3023 }
3024
3025 if (q->addend)
3026 {
3027 bfd_signed_vma addend = q->addend;
3028 if (addend < 0)
3029 {
3030 printf ("-0x");
3031 addend = -addend;
3032 }
3033 else
3034 printf ("+0x");
3035 bfd_printf_vma (abfd, addend);
3036 }
3037 if (addend2)
3038 {
3039 printf ("+0x");
3040 bfd_printf_vma (abfd, addend2);
3041 }
3042
3043 printf ("\n");
3044 }
3045
3046 if (last_filename != NULL)
3047 free (last_filename);
3048 if (last_functionname != NULL)
3049 free (last_functionname);
3050 }
3051
3052 static void
3053 dump_relocs_in_section (bfd *abfd,
3054 asection *section,
3055 void *dummy ATTRIBUTE_UNUSED)
3056 {
3057 arelent **relpp;
3058 long relcount;
3059 long relsize;
3060
3061 if ( bfd_is_abs_section (section)
3062 || bfd_is_und_section (section)
3063 || bfd_is_com_section (section)
3064 || (! process_section_p (section))
3065 || ((section->flags & SEC_RELOC) == 0))
3066 return;
3067
3068 relsize = bfd_get_reloc_upper_bound (abfd, section);
3069 if (relsize < 0)
3070 bfd_fatal (bfd_get_filename (abfd));
3071
3072 printf ("RELOCATION RECORDS FOR [%s]:", section->name);
3073
3074 if (relsize == 0)
3075 {
3076 printf (" (none)\n\n");
3077 return;
3078 }
3079
3080 relpp = (arelent **) xmalloc (relsize);
3081 relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
3082
3083 if (relcount < 0)
3084 bfd_fatal (bfd_get_filename (abfd));
3085 else if (relcount == 0)
3086 printf (" (none)\n\n");
3087 else
3088 {
3089 printf ("\n");
3090 dump_reloc_set (abfd, section, relpp, relcount);
3091 printf ("\n\n");
3092 }
3093 free (relpp);
3094 }
3095
3096 static void
3097 dump_relocs (bfd *abfd)
3098 {
3099 bfd_map_over_sections (abfd, dump_relocs_in_section, NULL);
3100 }
3101
3102 static void
3103 dump_dynamic_relocs (bfd *abfd)
3104 {
3105 long relsize;
3106 arelent **relpp;
3107 long relcount;
3108
3109 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
3110 if (relsize < 0)
3111 bfd_fatal (bfd_get_filename (abfd));
3112
3113 printf ("DYNAMIC RELOCATION RECORDS");
3114
3115 if (relsize == 0)
3116 printf (" (none)\n\n");
3117 else
3118 {
3119 relpp = (arelent **) xmalloc (relsize);
3120 relcount = bfd_canonicalize_dynamic_reloc (abfd, relpp, dynsyms);
3121
3122 if (relcount < 0)
3123 bfd_fatal (bfd_get_filename (abfd));
3124 else if (relcount == 0)
3125 printf (" (none)\n\n");
3126 else
3127 {
3128 printf ("\n");
3129 dump_reloc_set (abfd, NULL, relpp, relcount);
3130 printf ("\n\n");
3131 }
3132 free (relpp);
3133 }
3134 }
3135
3136 /* Creates a table of paths, to search for source files. */
3137
3138 static void
3139 add_include_path (const char *path)
3140 {
3141 if (path[0] == 0)
3142 return;
3143 include_path_count++;
3144 include_paths = (const char **)
3145 xrealloc (include_paths, include_path_count * sizeof (*include_paths));
3146 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3147 if (path[1] == ':' && path[2] == 0)
3148 path = concat (path, ".", (const char *) 0);
3149 #endif
3150 include_paths[include_path_count - 1] = path;
3151 }
3152
3153 static void
3154 adjust_addresses (bfd *abfd ATTRIBUTE_UNUSED,
3155 asection *section,
3156 void *arg)
3157 {
3158 if ((section->flags & SEC_DEBUGGING) == 0)
3159 {
3160 bfd_boolean *has_reloc_p = (bfd_boolean *) arg;
3161 section->vma += adjust_section_vma;
3162 if (*has_reloc_p)
3163 section->lma += adjust_section_vma;
3164 }
3165 }
3166
3167 /* Dump selected contents of ABFD. */
3168
3169 static void
3170 dump_bfd (bfd *abfd)
3171 {
3172 /* If we are adjusting section VMA's, change them all now. Changing
3173 the BFD information is a hack. However, we must do it, or
3174 bfd_find_nearest_line will not do the right thing. */
3175 if (adjust_section_vma != 0)
3176 {
3177 bfd_boolean has_reloc = (abfd->flags & HAS_RELOC);
3178 bfd_map_over_sections (abfd, adjust_addresses, &has_reloc);
3179 }
3180
3181 if (! dump_debugging_tags && ! suppress_bfd_header)
3182 printf (_("\n%s: file format %s\n"), bfd_get_filename (abfd),
3183 abfd->xvec->name);
3184 if (dump_ar_hdrs)
3185 print_arelt_descr (stdout, abfd, TRUE);
3186 if (dump_file_header)
3187 dump_bfd_header (abfd);
3188 if (dump_private_headers)
3189 dump_bfd_private_header (abfd);
3190 if (dump_private_options != NULL)
3191 dump_target_specific (abfd);
3192 if (! dump_debugging_tags && ! suppress_bfd_header)
3193 putchar ('\n');
3194 if (dump_section_headers)
3195 dump_headers (abfd);
3196
3197 if (dump_symtab
3198 || dump_reloc_info
3199 || disassemble
3200 || dump_debugging
3201 || dump_dwarf_section_info)
3202 syms = slurp_symtab (abfd);
3203 if (dump_dynamic_symtab || dump_dynamic_reloc_info
3204 || (disassemble && bfd_get_dynamic_symtab_upper_bound (abfd) > 0))
3205 dynsyms = slurp_dynamic_symtab (abfd);
3206 if (disassemble)
3207 {
3208 synthcount = bfd_get_synthetic_symtab (abfd, symcount, syms,
3209 dynsymcount, dynsyms, &synthsyms);
3210 if (synthcount < 0)
3211 synthcount = 0;
3212 }
3213
3214 if (dump_symtab)
3215 dump_symbols (abfd, FALSE);
3216 if (dump_dynamic_symtab)
3217 dump_symbols (abfd, TRUE);
3218 if (dump_dwarf_section_info)
3219 dump_dwarf (abfd);
3220 if (dump_stab_section_info)
3221 dump_stabs (abfd);
3222 if (dump_reloc_info && ! disassemble)
3223 dump_relocs (abfd);
3224 if (dump_dynamic_reloc_info && ! disassemble)
3225 dump_dynamic_relocs (abfd);
3226 if (dump_section_contents)
3227 dump_data (abfd);
3228 if (disassemble)
3229 disassemble_data (abfd);
3230
3231 if (dump_debugging)
3232 {
3233 void *dhandle;
3234
3235 dhandle = read_debugging_info (abfd, syms, symcount, TRUE);
3236 if (dhandle != NULL)
3237 {
3238 if (!print_debugging_info (stdout, dhandle, abfd, syms,
3239 bfd_demangle,
3240 dump_debugging_tags ? TRUE : FALSE))
3241 {
3242 non_fatal (_("%s: printing debugging information failed"),
3243 bfd_get_filename (abfd));
3244 exit_status = 1;
3245 }
3246 }
3247 /* PR 6483: If there was no STABS or IEEE debug
3248 info in the file, try DWARF instead. */
3249 else if (! dump_dwarf_section_info)
3250 {
3251 dwarf_select_sections_all ();
3252 dump_dwarf (abfd);
3253 }
3254 }
3255
3256 if (syms)
3257 {
3258 free (syms);
3259 syms = NULL;
3260 }
3261
3262 if (dynsyms)
3263 {
3264 free (dynsyms);
3265 dynsyms = NULL;
3266 }
3267
3268 if (synthsyms)
3269 {
3270 free (synthsyms);
3271 synthsyms = NULL;
3272 }
3273
3274 symcount = 0;
3275 dynsymcount = 0;
3276 synthcount = 0;
3277 }
3278
3279 static void
3280 display_object_bfd (bfd *abfd)
3281 {
3282 char **matching;
3283
3284 if (bfd_check_format_matches (abfd, bfd_object, &matching))
3285 {
3286 dump_bfd (abfd);
3287 return;
3288 }
3289
3290 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3291 {
3292 nonfatal (bfd_get_filename (abfd));
3293 list_matching_formats (matching);
3294 free (matching);
3295 return;
3296 }
3297
3298 if (bfd_get_error () != bfd_error_file_not_recognized)
3299 {
3300 nonfatal (bfd_get_filename (abfd));
3301 return;
3302 }
3303
3304 if (bfd_check_format_matches (abfd, bfd_core, &matching))
3305 {
3306 dump_bfd (abfd);
3307 return;
3308 }
3309
3310 nonfatal (bfd_get_filename (abfd));
3311
3312 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3313 {
3314 list_matching_formats (matching);
3315 free (matching);
3316 }
3317 }
3318
3319 static void
3320 display_any_bfd (bfd *file, int level)
3321 {
3322 /* Decompress sections unless dumping the section contents. */
3323 if (!dump_section_contents)
3324 file->flags |= BFD_DECOMPRESS;
3325
3326 /* If the file is an archive, process all of its elements. */
3327 if (bfd_check_format (file, bfd_archive))
3328 {
3329 bfd *arfile = NULL;
3330 bfd *last_arfile = NULL;
3331
3332 if (level == 0)
3333 printf (_("In archive %s:\n"), bfd_get_filename (file));
3334 else
3335 printf (_("In nested archive %s:\n"), bfd_get_filename (file));
3336
3337 for (;;)
3338 {
3339 bfd_set_error (bfd_error_no_error);
3340
3341 arfile = bfd_openr_next_archived_file (file, arfile);
3342 if (arfile == NULL)
3343 {
3344 if (bfd_get_error () != bfd_error_no_more_archived_files)
3345 nonfatal (bfd_get_filename (file));
3346 break;
3347 }
3348
3349 display_any_bfd (arfile, level + 1);
3350
3351 if (last_arfile != NULL)
3352 bfd_close (last_arfile);
3353 last_arfile = arfile;
3354 }
3355
3356 if (last_arfile != NULL)
3357 bfd_close (last_arfile);
3358 }
3359 else
3360 display_object_bfd (file);
3361 }
3362
3363 static void
3364 display_file (char *filename, char *target)
3365 {
3366 bfd *file;
3367
3368 if (get_file_size (filename) < 1)
3369 {
3370 exit_status = 1;
3371 return;
3372 }
3373
3374 file = bfd_openr (filename, target);
3375 if (file == NULL)
3376 {
3377 nonfatal (filename);
3378 return;
3379 }
3380
3381 display_any_bfd (file, 0);
3382
3383 bfd_close (file);
3384 }
3385 \f
3386 int
3387 main (int argc, char **argv)
3388 {
3389 int c;
3390 char *target = default_target;
3391 bfd_boolean seenflag = FALSE;
3392
3393 #if defined (HAVE_SETLOCALE)
3394 #if defined (HAVE_LC_MESSAGES)
3395 setlocale (LC_MESSAGES, "");
3396 #endif
3397 setlocale (LC_CTYPE, "");
3398 #endif
3399
3400 bindtextdomain (PACKAGE, LOCALEDIR);
3401 textdomain (PACKAGE);
3402
3403 program_name = *argv;
3404 xmalloc_set_program_name (program_name);
3405
3406 START_PROGRESS (program_name, 0);
3407
3408 expandargv (&argc, &argv);
3409
3410 bfd_init ();
3411 set_default_bfd_target ();
3412
3413 while ((c = getopt_long (argc, argv,
3414 "pP:ib:m:M:VvCdDlfFaHhrRtTxsSI:j:wE:zgeGW::",
3415 long_options, (int *) 0))
3416 != EOF)
3417 {
3418 switch (c)
3419 {
3420 case 0:
3421 break; /* We've been given a long option. */
3422 case 'm':
3423 machine = optarg;
3424 break;
3425 case 'M':
3426 if (disassembler_options)
3427 /* Ignore potential memory leak for now. */
3428 disassembler_options = concat (disassembler_options, ",",
3429 optarg, (const char *) NULL);
3430 else
3431 disassembler_options = optarg;
3432 break;
3433 case 'j':
3434 add_only (optarg);
3435 break;
3436 case 'F':
3437 display_file_offsets = TRUE;
3438 break;
3439 case 'l':
3440 with_line_numbers = TRUE;
3441 break;
3442 case 'b':
3443 target = optarg;
3444 break;
3445 case 'C':
3446 do_demangle = TRUE;
3447 if (optarg != NULL)
3448 {
3449 enum demangling_styles style;
3450
3451 style = cplus_demangle_name_to_style (optarg);
3452 if (style == unknown_demangling)
3453 fatal (_("unknown demangling style `%s'"),
3454 optarg);
3455
3456 cplus_demangle_set_style (style);
3457 }
3458 break;
3459 case 'w':
3460 wide_output = TRUE;
3461 break;
3462 case OPTION_ADJUST_VMA:
3463 adjust_section_vma = parse_vma (optarg, "--adjust-vma");
3464 break;
3465 case OPTION_START_ADDRESS:
3466 start_address = parse_vma (optarg, "--start-address");
3467 if ((stop_address != (bfd_vma) -1) && stop_address <= start_address)
3468 fatal (_("error: the start address should be before the end address"));
3469 break;
3470 case OPTION_STOP_ADDRESS:
3471 stop_address = parse_vma (optarg, "--stop-address");
3472 if ((start_address != (bfd_vma) -1) && stop_address <= start_address)
3473 fatal (_("error: the stop address should be after the start address"));
3474 break;
3475 case OPTION_PREFIX:
3476 prefix = optarg;
3477 prefix_length = strlen (prefix);
3478 /* Remove an unnecessary trailing '/' */
3479 while (IS_DIR_SEPARATOR (prefix[prefix_length - 1]))
3480 prefix_length--;
3481 break;
3482 case OPTION_PREFIX_STRIP:
3483 prefix_strip = atoi (optarg);
3484 if (prefix_strip < 0)
3485 fatal (_("error: prefix strip must be non-negative"));
3486 break;
3487 case OPTION_INSN_WIDTH:
3488 insn_width = strtoul (optarg, NULL, 0);
3489 if (insn_width <= 0)
3490 fatal (_("error: instruction width must be positive"));
3491 break;
3492 case 'E':
3493 if (strcmp (optarg, "B") == 0)
3494 endian = BFD_ENDIAN_BIG;
3495 else if (strcmp (optarg, "L") == 0)
3496 endian = BFD_ENDIAN_LITTLE;
3497 else
3498 {
3499 nonfatal (_("unrecognized -E option"));
3500 usage (stderr, 1);
3501 }
3502 break;
3503 case OPTION_ENDIAN:
3504 if (strncmp (optarg, "big", strlen (optarg)) == 0)
3505 endian = BFD_ENDIAN_BIG;
3506 else if (strncmp (optarg, "little", strlen (optarg)) == 0)
3507 endian = BFD_ENDIAN_LITTLE;
3508 else
3509 {
3510 non_fatal (_("unrecognized --endian type `%s'"), optarg);
3511 exit_status = 1;
3512 usage (stderr, 1);
3513 }
3514 break;
3515
3516 case 'f':
3517 dump_file_header = TRUE;
3518 seenflag = TRUE;
3519 break;
3520 case 'i':
3521 formats_info = TRUE;
3522 seenflag = TRUE;
3523 break;
3524 case 'I':
3525 add_include_path (optarg);
3526 break;
3527 case 'p':
3528 dump_private_headers = TRUE;
3529 seenflag = TRUE;
3530 break;
3531 case 'P':
3532 dump_private_options = optarg;
3533 seenflag = TRUE;
3534 break;
3535 case 'x':
3536 dump_private_headers = TRUE;
3537 dump_symtab = TRUE;
3538 dump_reloc_info = TRUE;
3539 dump_file_header = TRUE;
3540 dump_ar_hdrs = TRUE;
3541 dump_section_headers = TRUE;
3542 seenflag = TRUE;
3543 break;
3544 case 't':
3545 dump_symtab = TRUE;
3546 seenflag = TRUE;
3547 break;
3548 case 'T':
3549 dump_dynamic_symtab = TRUE;
3550 seenflag = TRUE;
3551 break;
3552 case 'd':
3553 disassemble = TRUE;
3554 seenflag = TRUE;
3555 break;
3556 case 'z':
3557 disassemble_zeroes = TRUE;
3558 break;
3559 case 'D':
3560 disassemble = TRUE;
3561 disassemble_all = TRUE;
3562 seenflag = TRUE;
3563 break;
3564 case 'S':
3565 disassemble = TRUE;
3566 with_source_code = TRUE;
3567 seenflag = TRUE;
3568 break;
3569 case 'g':
3570 dump_debugging = 1;
3571 seenflag = TRUE;
3572 break;
3573 case 'e':
3574 dump_debugging = 1;
3575 dump_debugging_tags = 1;
3576 do_demangle = TRUE;
3577 seenflag = TRUE;
3578 break;
3579 case 'W':
3580 dump_dwarf_section_info = TRUE;
3581 seenflag = TRUE;
3582 if (optarg)
3583 dwarf_select_sections_by_letters (optarg);
3584 else
3585 dwarf_select_sections_all ();
3586 break;
3587 case OPTION_DWARF:
3588 dump_dwarf_section_info = TRUE;
3589 seenflag = TRUE;
3590 if (optarg)
3591 dwarf_select_sections_by_names (optarg);
3592 else
3593 dwarf_select_sections_all ();
3594 break;
3595 case OPTION_DWARF_DEPTH:
3596 {
3597 char *cp;
3598 dwarf_cutoff_level = strtoul (optarg, & cp, 0);
3599 }
3600 break;
3601 case OPTION_DWARF_START:
3602 {
3603 char *cp;
3604 dwarf_start_die = strtoul (optarg, & cp, 0);
3605 suppress_bfd_header = 1;
3606 }
3607 break;
3608 case OPTION_DWARF_CHECK:
3609 dwarf_check = TRUE;
3610 break;
3611 case 'G':
3612 dump_stab_section_info = TRUE;
3613 seenflag = TRUE;
3614 break;
3615 case 's':
3616 dump_section_contents = TRUE;
3617 seenflag = TRUE;
3618 break;
3619 case 'r':
3620 dump_reloc_info = TRUE;
3621 seenflag = TRUE;
3622 break;
3623 case 'R':
3624 dump_dynamic_reloc_info = TRUE;
3625 seenflag = TRUE;
3626 break;
3627 case 'a':
3628 dump_ar_hdrs = TRUE;
3629 seenflag = TRUE;
3630 break;
3631 case 'h':
3632 dump_section_headers = TRUE;
3633 seenflag = TRUE;
3634 break;
3635 case 'H':
3636 usage (stdout, 0);
3637 seenflag = TRUE;
3638 case 'v':
3639 case 'V':
3640 show_version = TRUE;
3641 seenflag = TRUE;
3642 break;
3643
3644 default:
3645 usage (stderr, 1);
3646 }
3647 }
3648
3649 if (show_version)
3650 print_version ("objdump");
3651
3652 if (!seenflag)
3653 usage (stderr, 2);
3654
3655 if (formats_info)
3656 exit_status = display_info ();
3657 else
3658 {
3659 if (optind == argc)
3660 display_file ("a.out", target);
3661 else
3662 for (; optind < argc;)
3663 display_file (argv[optind++], target);
3664 }
3665
3666 free_only_list ();
3667
3668 END_PROGRESS (program_name);
3669
3670 return exit_status;
3671 }