6812ba7853de6cbaad86dec915a6bec59729fdc1
[deliverable/binutils-gdb.git] / binutils / objdump.c
1 /* objdump.c -- dump information about an object file.
2 Copyright (C) 1990-2019 Free Software Foundation, Inc.
3
4 This file is part of GNU Binutils.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
9 any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
20
21
22 /* Objdump overview.
23
24 Objdump displays information about one or more object files, either on
25 their own, or inside libraries. It is commonly used as a disassembler,
26 but it can also display information about file headers, symbol tables,
27 relocations, debugging directives and more.
28
29 The flow of execution is as follows:
30
31 1. Command line arguments are checked for control switches and the
32 information to be displayed is selected.
33
34 2. Any remaining arguments are assumed to be object files, and they are
35 processed in order by display_bfd(). If the file is an archive each
36 of its elements is processed in turn.
37
38 3. The file's target architecture and binary file format are determined
39 by bfd_check_format(). If they are recognised, then dump_bfd() is
40 called.
41
42 4. dump_bfd() in turn calls separate functions to display the requested
43 item(s) of information(s). For example disassemble_data() is called if
44 a disassembly has been requested.
45
46 When disassembling the code loops through blocks of instructions bounded
47 by symbols, calling disassemble_bytes() on each block. The actual
48 disassembling is done by the libopcodes library, via a function pointer
49 supplied by the disassembler() function. */
50
51 #include "sysdep.h"
52 #include "bfd.h"
53 #include "elf-bfd.h"
54 #include "coff-bfd.h"
55 #include "progress.h"
56 #include "bucomm.h"
57 #include "elfcomm.h"
58 #include "dwarf.h"
59 #include "ctf-api.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 dump_ctf_section_info; /* --ctf */
103 static char *dump_ctf_section_name;
104 static char *dump_ctf_parent_name; /* --ctf-parent */
105 static int do_demangle; /* -C, --demangle */
106 static bfd_boolean disassemble; /* -d */
107 static bfd_boolean disassemble_all; /* -D */
108 static int disassemble_zeroes; /* --disassemble-zeroes */
109 static bfd_boolean formats_info; /* -i */
110 static int wide_output; /* -w */
111 static int insn_width; /* --insn-width */
112 static bfd_vma start_address = (bfd_vma) -1; /* --start-address */
113 static bfd_vma stop_address = (bfd_vma) -1; /* --stop-address */
114 static int dump_debugging; /* --debugging */
115 static int dump_debugging_tags; /* --debugging-tags */
116 static int suppress_bfd_header;
117 static int dump_special_syms = 0; /* --special-syms */
118 static bfd_vma adjust_section_vma = 0; /* --adjust-vma */
119 static int file_start_context = 0; /* --file-start-context */
120 static bfd_boolean display_file_offsets;/* -F */
121 static const char *prefix; /* --prefix */
122 static int prefix_strip; /* --prefix-strip */
123 static size_t prefix_length;
124 static bfd_boolean unwind_inlines; /* --inlines. */
125 static const char * disasm_sym; /* Disassembly start symbol. */
126
127 static int demangle_flags = DMGL_ANSI | DMGL_PARAMS;
128
129 /* A structure to record the sections mentioned in -j switches. */
130 struct only
131 {
132 const char * name; /* The name of the section. */
133 bfd_boolean seen; /* A flag to indicate that the section has been found in one or more input files. */
134 struct only * next; /* Pointer to the next structure in the list. */
135 };
136 /* Pointer to an array of 'only' structures.
137 This pointer is NULL if the -j switch has not been used. */
138 static struct only * only_list = NULL;
139
140 /* Variables for handling include file path table. */
141 static const char **include_paths;
142 static int include_path_count;
143
144 /* Extra info to pass to the section disassembler and address printing
145 function. */
146 struct objdump_disasm_info
147 {
148 bfd * abfd;
149 asection * sec;
150 bfd_boolean require_sec;
151 arelent ** dynrelbuf;
152 long dynrelcount;
153 disassembler_ftype disassemble_fn;
154 arelent * reloc;
155 const char * symbol;
156 };
157
158 /* Architecture to disassemble for, or default if NULL. */
159 static char *machine = NULL;
160
161 /* Target specific options to the disassembler. */
162 static char *disassembler_options = NULL;
163
164 /* Endianness to disassemble for, or default if BFD_ENDIAN_UNKNOWN. */
165 static enum bfd_endian endian = BFD_ENDIAN_UNKNOWN;
166
167 /* The symbol table. */
168 static asymbol **syms;
169
170 /* Number of symbols in `syms'. */
171 static long symcount = 0;
172
173 /* The sorted symbol table. */
174 static asymbol **sorted_syms;
175
176 /* Number of symbols in `sorted_syms'. */
177 static long sorted_symcount = 0;
178
179 /* The dynamic symbol table. */
180 static asymbol **dynsyms;
181
182 /* The synthetic symbol table. */
183 static asymbol *synthsyms;
184 static long synthcount = 0;
185
186 /* Number of symbols in `dynsyms'. */
187 static long dynsymcount = 0;
188
189 static bfd_byte *stabs;
190 static bfd_size_type stab_size;
191
192 static bfd_byte *strtab;
193 static bfd_size_type stabstr_size;
194
195 static bfd_boolean is_relocatable = FALSE;
196
197 /* Handlers for -P/--private. */
198 static const struct objdump_private_desc * const objdump_private_vectors[] =
199 {
200 OBJDUMP_PRIVATE_VECTORS
201 NULL
202 };
203 \f
204 static void usage (FILE *, int) ATTRIBUTE_NORETURN;
205 static void
206 usage (FILE *stream, int status)
207 {
208 fprintf (stream, _("Usage: %s <option(s)> <file(s)>\n"), program_name);
209 fprintf (stream, _(" Display information from object <file(s)>.\n"));
210 fprintf (stream, _(" At least one of the following switches must be given:\n"));
211 fprintf (stream, _("\
212 -a, --archive-headers Display archive header information\n\
213 -f, --file-headers Display the contents of the overall file header\n\
214 -p, --private-headers Display object format specific file header contents\n\
215 -P, --private=OPT,OPT... Display object format specific contents\n\
216 -h, --[section-]headers Display the contents of the section headers\n\
217 -x, --all-headers Display the contents of all headers\n\
218 -d, --disassemble Display assembler contents of executable sections\n\
219 -D, --disassemble-all Display assembler contents of all sections\n\
220 --disassemble=<sym> Display assembler contents from <sym>\n\
221 -S, --source Intermix source code with disassembly\n\
222 -s, --full-contents Display the full contents of all sections requested\n\
223 -g, --debugging Display debug information in object file\n\
224 -e, --debugging-tags Display debug information using ctags style\n\
225 -G, --stabs Display (in raw form) any STABS info in the file\n\
226 -W[lLiaprmfFsoRtUuTgAckK] or\n\
227 --dwarf[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,\n\
228 =frames-interp,=str,=loc,=Ranges,=pubtypes,\n\
229 =gdb_index,=trace_info,=trace_abbrev,=trace_aranges,\n\
230 =addr,=cu_index,=links,=follow-links]\n\
231 Display DWARF info in the file\n\
232 --ctf=SECTION Display CTF info from SECTION\n\
233 -t, --syms Display the contents of the symbol table(s)\n\
234 -T, --dynamic-syms Display the contents of the dynamic symbol table\n\
235 -r, --reloc Display the relocation entries in the file\n\
236 -R, --dynamic-reloc Display the dynamic relocation entries in the file\n\
237 @<file> Read options from <file>\n\
238 -v, --version Display this program's version number\n\
239 -i, --info List object formats and architectures supported\n\
240 -H, --help Display this information\n\
241 "));
242 if (status != 2)
243 {
244 const struct objdump_private_desc * const *desc;
245
246 fprintf (stream, _("\n The following switches are optional:\n"));
247 fprintf (stream, _("\
248 -b, --target=BFDNAME Specify the target object format as BFDNAME\n\
249 -m, --architecture=MACHINE Specify the target architecture as MACHINE\n\
250 -j, --section=NAME Only display information for section NAME\n\
251 -M, --disassembler-options=OPT Pass text OPT on to the disassembler\n\
252 -EB --endian=big Assume big endian format when disassembling\n\
253 -EL --endian=little Assume little endian format when disassembling\n\
254 --file-start-context Include context from start of file (with -S)\n\
255 -I, --include=DIR Add DIR to search list for source files\n\
256 -l, --line-numbers Include line numbers and filenames in output\n\
257 -F, --file-offsets Include file offsets when displaying information\n\
258 -C, --demangle[=STYLE] Decode mangled/processed symbol names\n\
259 The STYLE, if specified, can be `auto', `gnu',\n\
260 `lucid', `arm', `hp', `edg', `gnu-v3', `java'\n\
261 or `gnat'\n\
262 --recurse-limit Enable a limit on recursion whilst demangling. [Default]\n\
263 --no-recurse-limit Disable a limit on recursion whilst demangling\n\
264 -w, --wide Format output for more than 80 columns\n\
265 -z, --disassemble-zeroes Do not skip blocks of zeroes when disassembling\n\
266 --start-address=ADDR Only process data whose address is >= ADDR\n\
267 --stop-address=ADDR Only process data whose address is <= ADDR\n\
268 --prefix-addresses Print complete address alongside disassembly\n\
269 --[no-]show-raw-insn Display hex alongside symbolic disassembly\n\
270 --insn-width=WIDTH Display WIDTH bytes on a single line for -d\n\
271 --adjust-vma=OFFSET Add OFFSET to all displayed section addresses\n\
272 --special-syms Include special symbols in symbol dumps\n\
273 --inlines Print all inlines for source line (with -l)\n\
274 --prefix=PREFIX Add PREFIX to absolute paths for -S\n\
275 --prefix-strip=LEVEL Strip initial directory names for -S\n"));
276 fprintf (stream, _("\
277 --dwarf-depth=N Do not display DIEs at depth N or greater\n\
278 --dwarf-start=N Display DIEs starting with N, at the same depth\n\
279 or deeper\n\
280 --dwarf-check Make additional dwarf internal consistency checks.\
281 \n\
282 --ctf-parent=SECTION Use SECTION as the CTF parent\n\n"));
283 list_supported_targets (program_name, stream);
284 list_supported_architectures (program_name, stream);
285
286 disassembler_usage (stream);
287
288 if (objdump_private_vectors[0] != NULL)
289 {
290 fprintf (stream,
291 _("\nOptions supported for -P/--private switch:\n"));
292 for (desc = objdump_private_vectors; *desc != NULL; desc++)
293 (*desc)->help (stream);
294 }
295 }
296 if (REPORT_BUGS_TO[0] && status == 0)
297 fprintf (stream, _("Report bugs to %s.\n"), REPORT_BUGS_TO);
298 exit (status);
299 }
300
301 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
302 enum option_values
303 {
304 OPTION_ENDIAN=150,
305 OPTION_START_ADDRESS,
306 OPTION_STOP_ADDRESS,
307 OPTION_DWARF,
308 OPTION_PREFIX,
309 OPTION_PREFIX_STRIP,
310 OPTION_INSN_WIDTH,
311 OPTION_ADJUST_VMA,
312 OPTION_DWARF_DEPTH,
313 OPTION_DWARF_CHECK,
314 OPTION_DWARF_START,
315 OPTION_RECURSE_LIMIT,
316 OPTION_NO_RECURSE_LIMIT,
317 OPTION_INLINES,
318 OPTION_CTF,
319 OPTION_CTF_PARENT
320 };
321
322 static struct option long_options[]=
323 {
324 {"adjust-vma", required_argument, NULL, OPTION_ADJUST_VMA},
325 {"all-headers", no_argument, NULL, 'x'},
326 {"private-headers", no_argument, NULL, 'p'},
327 {"private", required_argument, NULL, 'P'},
328 {"architecture", required_argument, NULL, 'm'},
329 {"archive-headers", no_argument, NULL, 'a'},
330 {"debugging", no_argument, NULL, 'g'},
331 {"debugging-tags", no_argument, NULL, 'e'},
332 {"demangle", optional_argument, NULL, 'C'},
333 {"disassemble", optional_argument, NULL, 'd'},
334 {"disassemble-all", no_argument, NULL, 'D'},
335 {"disassembler-options", required_argument, NULL, 'M'},
336 {"disassemble-zeroes", no_argument, NULL, 'z'},
337 {"dynamic-reloc", no_argument, NULL, 'R'},
338 {"dynamic-syms", no_argument, NULL, 'T'},
339 {"endian", required_argument, NULL, OPTION_ENDIAN},
340 {"file-headers", no_argument, NULL, 'f'},
341 {"file-offsets", no_argument, NULL, 'F'},
342 {"file-start-context", no_argument, &file_start_context, 1},
343 {"full-contents", no_argument, NULL, 's'},
344 {"headers", no_argument, NULL, 'h'},
345 {"help", no_argument, NULL, 'H'},
346 {"info", no_argument, NULL, 'i'},
347 {"line-numbers", no_argument, NULL, 'l'},
348 {"no-show-raw-insn", no_argument, &show_raw_insn, -1},
349 {"prefix-addresses", no_argument, &prefix_addresses, 1},
350 {"recurse-limit", no_argument, NULL, OPTION_RECURSE_LIMIT},
351 {"recursion-limit", no_argument, NULL, OPTION_RECURSE_LIMIT},
352 {"no-recurse-limit", no_argument, NULL, OPTION_NO_RECURSE_LIMIT},
353 {"no-recursion-limit", no_argument, NULL, OPTION_NO_RECURSE_LIMIT},
354 {"reloc", no_argument, NULL, 'r'},
355 {"section", required_argument, NULL, 'j'},
356 {"section-headers", no_argument, NULL, 'h'},
357 {"show-raw-insn", no_argument, &show_raw_insn, 1},
358 {"source", no_argument, NULL, 'S'},
359 {"special-syms", no_argument, &dump_special_syms, 1},
360 {"include", required_argument, NULL, 'I'},
361 {"dwarf", optional_argument, NULL, OPTION_DWARF},
362 {"ctf", required_argument, NULL, OPTION_CTF},
363 {"ctf-parent", required_argument, NULL, OPTION_CTF_PARENT},
364 {"stabs", no_argument, NULL, 'G'},
365 {"start-address", required_argument, NULL, OPTION_START_ADDRESS},
366 {"stop-address", required_argument, NULL, OPTION_STOP_ADDRESS},
367 {"syms", no_argument, NULL, 't'},
368 {"target", required_argument, NULL, 'b'},
369 {"version", no_argument, NULL, 'V'},
370 {"wide", no_argument, NULL, 'w'},
371 {"prefix", required_argument, NULL, OPTION_PREFIX},
372 {"prefix-strip", required_argument, NULL, OPTION_PREFIX_STRIP},
373 {"insn-width", required_argument, NULL, OPTION_INSN_WIDTH},
374 {"dwarf-depth", required_argument, 0, OPTION_DWARF_DEPTH},
375 {"dwarf-start", required_argument, 0, OPTION_DWARF_START},
376 {"dwarf-check", no_argument, 0, OPTION_DWARF_CHECK},
377 {"inlines", no_argument, 0, OPTION_INLINES},
378 {0, no_argument, 0, 0}
379 };
380 \f
381 static void
382 nonfatal (const char *msg)
383 {
384 bfd_nonfatal (msg);
385 exit_status = 1;
386 }
387
388 /* Returns a version of IN with any control characters
389 replaced by escape sequences. Uses a static buffer
390 if necessary. */
391
392 static const char *
393 sanitize_string (const char * in)
394 {
395 static char * buffer = NULL;
396 static size_t buffer_len = 0;
397 const char * original = in;
398 char * out;
399
400 /* Paranoia. */
401 if (in == NULL)
402 return "";
403
404 /* See if any conversion is necessary. In the majority
405 of cases it will not be needed. */
406 do
407 {
408 char c = *in++;
409
410 if (c == 0)
411 return original;
412
413 if (ISCNTRL (c))
414 break;
415 }
416 while (1);
417
418 /* Copy the input, translating as needed. */
419 in = original;
420 if (buffer_len < (strlen (in) * 2))
421 {
422 free ((void *) buffer);
423 buffer_len = strlen (in) * 2;
424 buffer = xmalloc (buffer_len + 1);
425 }
426
427 out = buffer;
428 do
429 {
430 char c = *in++;
431
432 if (c == 0)
433 break;
434
435 if (!ISCNTRL (c))
436 *out++ = c;
437 else
438 {
439 *out++ = '^';
440 *out++ = c + 0x40;
441 }
442 }
443 while (1);
444
445 *out = 0;
446 return buffer;
447 }
448
449 \f
450 /* Returns TRUE if the specified section should be dumped. */
451
452 static bfd_boolean
453 process_section_p (asection * section)
454 {
455 struct only * only;
456
457 if (only_list == NULL)
458 return TRUE;
459
460 for (only = only_list; only; only = only->next)
461 if (strcmp (only->name, section->name) == 0)
462 {
463 only->seen = TRUE;
464 return TRUE;
465 }
466
467 return FALSE;
468 }
469
470 /* Add an entry to the 'only' list. */
471
472 static void
473 add_only (char * name)
474 {
475 struct only * only;
476
477 /* First check to make sure that we do not
478 already have an entry for this name. */
479 for (only = only_list; only; only = only->next)
480 if (strcmp (only->name, name) == 0)
481 return;
482
483 only = xmalloc (sizeof * only);
484 only->name = name;
485 only->seen = FALSE;
486 only->next = only_list;
487 only_list = only;
488 }
489
490 /* Release the memory used by the 'only' list.
491 PR 11225: Issue a warning message for unseen sections.
492 Only do this if none of the sections were seen. This is mainly to support
493 tools like the GAS testsuite where an object file is dumped with a list of
494 generic section names known to be present in a range of different file
495 formats. */
496
497 static void
498 free_only_list (void)
499 {
500 bfd_boolean at_least_one_seen = FALSE;
501 struct only * only;
502 struct only * next;
503
504 if (only_list == NULL)
505 return;
506
507 for (only = only_list; only; only = only->next)
508 if (only->seen)
509 {
510 at_least_one_seen = TRUE;
511 break;
512 }
513
514 for (only = only_list; only; only = next)
515 {
516 if (! at_least_one_seen)
517 {
518 non_fatal (_("section '%s' mentioned in a -j option, "
519 "but not found in any input file"),
520 only->name);
521 exit_status = 1;
522 }
523 next = only->next;
524 free (only);
525 }
526 }
527
528 \f
529 static void
530 dump_section_header (bfd *abfd, asection *section, void *data)
531 {
532 char *comma = "";
533 unsigned int opb = bfd_octets_per_byte (abfd);
534 int longest_section_name = *((int *) data);
535
536 /* Ignore linker created section. See elfNN_ia64_object_p in
537 bfd/elfxx-ia64.c. */
538 if (section->flags & SEC_LINKER_CREATED)
539 return;
540
541 /* PR 10413: Skip sections that we are ignoring. */
542 if (! process_section_p (section))
543 return;
544
545 printf ("%3d %-*s %08lx ", section->index, longest_section_name,
546 sanitize_string (bfd_get_section_name (abfd, section)),
547 (unsigned long) bfd_section_size (abfd, section) / opb);
548 bfd_printf_vma (abfd, bfd_get_section_vma (abfd, section));
549 printf (" ");
550 bfd_printf_vma (abfd, section->lma);
551 printf (" %08lx 2**%u", (unsigned long) section->filepos,
552 bfd_get_section_alignment (abfd, section));
553 if (! wide_output)
554 printf ("\n ");
555 printf (" ");
556
557 #define PF(x, y) \
558 if (section->flags & x) { printf ("%s%s", comma, y); comma = ", "; }
559
560 PF (SEC_HAS_CONTENTS, "CONTENTS");
561 PF (SEC_ALLOC, "ALLOC");
562 PF (SEC_CONSTRUCTOR, "CONSTRUCTOR");
563 PF (SEC_LOAD, "LOAD");
564 PF (SEC_RELOC, "RELOC");
565 PF (SEC_READONLY, "READONLY");
566 PF (SEC_CODE, "CODE");
567 PF (SEC_DATA, "DATA");
568 PF (SEC_ROM, "ROM");
569 PF (SEC_DEBUGGING, "DEBUGGING");
570 PF (SEC_NEVER_LOAD, "NEVER_LOAD");
571 PF (SEC_EXCLUDE, "EXCLUDE");
572 PF (SEC_SORT_ENTRIES, "SORT_ENTRIES");
573 if (bfd_get_arch (abfd) == bfd_arch_tic54x)
574 {
575 PF (SEC_TIC54X_BLOCK, "BLOCK");
576 PF (SEC_TIC54X_CLINK, "CLINK");
577 }
578 PF (SEC_SMALL_DATA, "SMALL_DATA");
579 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
580 {
581 PF (SEC_COFF_SHARED, "SHARED");
582 PF (SEC_COFF_NOREAD, "NOREAD");
583 }
584 else if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
585 PF (SEC_ELF_PURECODE, "PURECODE");
586 PF (SEC_THREAD_LOCAL, "THREAD_LOCAL");
587 PF (SEC_GROUP, "GROUP");
588 if (bfd_get_arch (abfd) == bfd_arch_mep)
589 {
590 PF (SEC_MEP_VLIW, "VLIW");
591 }
592
593 if ((section->flags & SEC_LINK_ONCE) != 0)
594 {
595 const char *ls;
596 struct coff_comdat_info *comdat;
597
598 switch (section->flags & SEC_LINK_DUPLICATES)
599 {
600 default:
601 abort ();
602 case SEC_LINK_DUPLICATES_DISCARD:
603 ls = "LINK_ONCE_DISCARD";
604 break;
605 case SEC_LINK_DUPLICATES_ONE_ONLY:
606 ls = "LINK_ONCE_ONE_ONLY";
607 break;
608 case SEC_LINK_DUPLICATES_SAME_SIZE:
609 ls = "LINK_ONCE_SAME_SIZE";
610 break;
611 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
612 ls = "LINK_ONCE_SAME_CONTENTS";
613 break;
614 }
615 printf ("%s%s", comma, ls);
616
617 comdat = bfd_coff_get_comdat_section (abfd, section);
618 if (comdat != NULL)
619 printf (" (COMDAT %s %ld)", comdat->name, comdat->symbol);
620
621 comma = ", ";
622 }
623
624 printf ("\n");
625 #undef PF
626 }
627
628 /* Called on each SECTION in ABFD, update the int variable pointed to by
629 DATA which contains the string length of the longest section name. */
630
631 static void
632 find_longest_section_name (bfd *abfd, asection *section, void *data)
633 {
634 int *longest_so_far = (int *) data;
635 const char *name;
636 int len;
637
638 /* Ignore linker created section. */
639 if (section->flags & SEC_LINKER_CREATED)
640 return;
641
642 /* Skip sections that we are ignoring. */
643 if (! process_section_p (section))
644 return;
645
646 name = bfd_get_section_name (abfd, section);
647 len = (int) strlen (name);
648 if (len > *longest_so_far)
649 *longest_so_far = len;
650 }
651
652 static void
653 dump_headers (bfd *abfd)
654 {
655 /* The default width of 13 is just an arbitrary choice. */
656 int max_section_name_length = 13;
657 int bfd_vma_width;
658
659 #ifndef BFD64
660 bfd_vma_width = 10;
661 #else
662 /* With BFD64, non-ELF returns -1 and wants always 64 bit addresses. */
663 if (bfd_get_arch_size (abfd) == 32)
664 bfd_vma_width = 10;
665 else
666 bfd_vma_width = 18;
667 #endif
668
669 printf (_("Sections:\n"));
670
671 if (wide_output)
672 bfd_map_over_sections (abfd, find_longest_section_name,
673 &max_section_name_length);
674
675 printf (_("Idx %-*s Size %-*s%-*sFile off Algn"),
676 max_section_name_length, "Name",
677 bfd_vma_width, "VMA",
678 bfd_vma_width, "LMA");
679
680 if (wide_output)
681 printf (_(" Flags"));
682 printf ("\n");
683
684 bfd_map_over_sections (abfd, dump_section_header,
685 &max_section_name_length);
686 }
687 \f
688 static asymbol **
689 slurp_symtab (bfd *abfd)
690 {
691 asymbol **sy = NULL;
692 long storage;
693
694 if (!(bfd_get_file_flags (abfd) & HAS_SYMS))
695 {
696 symcount = 0;
697 return NULL;
698 }
699
700 storage = bfd_get_symtab_upper_bound (abfd);
701 if (storage < 0)
702 {
703 non_fatal (_("failed to read symbol table from: %s"), bfd_get_filename (abfd));
704 bfd_fatal (_("error message was"));
705 }
706 if (storage)
707 {
708 off_t filesize = bfd_get_file_size (abfd);
709
710 /* qv PR 24707. */
711 if (filesize > 0
712 && filesize < storage
713 /* The MMO file format supports its own special compression
714 technique, so its sections can be larger than the file size. */
715 && bfd_get_flavour (abfd) != bfd_target_mmo_flavour)
716 {
717 bfd_nonfatal_message (bfd_get_filename (abfd), abfd, NULL,
718 _("error: symbol table size (%#lx) is larger than filesize (%#lx)"),
719 storage, (long) filesize);
720 exit_status = 1;
721 symcount = 0;
722 return NULL;
723 }
724
725 sy = (asymbol **) xmalloc (storage);
726 }
727
728 symcount = bfd_canonicalize_symtab (abfd, sy);
729 if (symcount < 0)
730 bfd_fatal (bfd_get_filename (abfd));
731 return sy;
732 }
733
734 /* Read in the dynamic symbols. */
735
736 static asymbol **
737 slurp_dynamic_symtab (bfd *abfd)
738 {
739 asymbol **sy = NULL;
740 long storage;
741
742 storage = bfd_get_dynamic_symtab_upper_bound (abfd);
743 if (storage < 0)
744 {
745 if (!(bfd_get_file_flags (abfd) & DYNAMIC))
746 {
747 non_fatal (_("%s: not a dynamic object"), bfd_get_filename (abfd));
748 exit_status = 1;
749 dynsymcount = 0;
750 return NULL;
751 }
752
753 bfd_fatal (bfd_get_filename (abfd));
754 }
755 if (storage)
756 sy = (asymbol **) xmalloc (storage);
757
758 dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, sy);
759 if (dynsymcount < 0)
760 bfd_fatal (bfd_get_filename (abfd));
761 return sy;
762 }
763
764 /* Some symbol names are significant and should be kept in the
765 table of sorted symbol names, even if they are marked as
766 debugging/section symbols. */
767
768 static bfd_boolean
769 is_significant_symbol_name (const char * name)
770 {
771 return strncmp (name, ".plt", 4) == 0 || strcmp (name, ".got") == 0;
772 }
773
774 /* Filter out (in place) symbols that are useless for disassembly.
775 COUNT is the number of elements in SYMBOLS.
776 Return the number of useful symbols. */
777
778 static long
779 remove_useless_symbols (asymbol **symbols, long count)
780 {
781 asymbol **in_ptr = symbols, **out_ptr = symbols;
782
783 while (--count >= 0)
784 {
785 asymbol *sym = *in_ptr++;
786
787 if (sym->name == NULL || sym->name[0] == '\0')
788 continue;
789 if ((sym->flags & (BSF_DEBUGGING | BSF_SECTION_SYM))
790 && ! is_significant_symbol_name (sym->name))
791 continue;
792 if (bfd_is_und_section (sym->section)
793 || bfd_is_com_section (sym->section))
794 continue;
795
796 *out_ptr++ = sym;
797 }
798 return out_ptr - symbols;
799 }
800
801 /* Sort symbols into value order. */
802
803 static int
804 compare_symbols (const void *ap, const void *bp)
805 {
806 const asymbol *a = * (const asymbol **) ap;
807 const asymbol *b = * (const asymbol **) bp;
808 const char *an;
809 const char *bn;
810 size_t anl;
811 size_t bnl;
812 bfd_boolean af;
813 bfd_boolean bf;
814 flagword aflags;
815 flagword bflags;
816
817 if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
818 return 1;
819 else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
820 return -1;
821
822 if (a->section > b->section)
823 return 1;
824 else if (a->section < b->section)
825 return -1;
826
827 an = bfd_asymbol_name (a);
828 bn = bfd_asymbol_name (b);
829 anl = strlen (an);
830 bnl = strlen (bn);
831
832 /* The symbols gnu_compiled and gcc2_compiled convey no real
833 information, so put them after other symbols with the same value. */
834 af = (strstr (an, "gnu_compiled") != NULL
835 || strstr (an, "gcc2_compiled") != NULL);
836 bf = (strstr (bn, "gnu_compiled") != NULL
837 || strstr (bn, "gcc2_compiled") != NULL);
838
839 if (af && ! bf)
840 return 1;
841 if (! af && bf)
842 return -1;
843
844 /* We use a heuristic for the file name, to try to sort it after
845 more useful symbols. It may not work on non Unix systems, but it
846 doesn't really matter; the only difference is precisely which
847 symbol names get printed. */
848
849 #define file_symbol(s, sn, snl) \
850 (((s)->flags & BSF_FILE) != 0 \
851 || ((sn)[(snl) - 2] == '.' \
852 && ((sn)[(snl) - 1] == 'o' \
853 || (sn)[(snl) - 1] == 'a')))
854
855 af = file_symbol (a, an, anl);
856 bf = file_symbol (b, bn, bnl);
857
858 if (af && ! bf)
859 return 1;
860 if (! af && bf)
861 return -1;
862
863 /* Try to sort global symbols before local symbols before function
864 symbols before debugging symbols. */
865
866 aflags = a->flags;
867 bflags = b->flags;
868
869 if ((aflags & BSF_DEBUGGING) != (bflags & BSF_DEBUGGING))
870 {
871 if ((aflags & BSF_DEBUGGING) != 0)
872 return 1;
873 else
874 return -1;
875 }
876 if ((aflags & BSF_FUNCTION) != (bflags & BSF_FUNCTION))
877 {
878 if ((aflags & BSF_FUNCTION) != 0)
879 return -1;
880 else
881 return 1;
882 }
883 if ((aflags & BSF_LOCAL) != (bflags & BSF_LOCAL))
884 {
885 if ((aflags & BSF_LOCAL) != 0)
886 return 1;
887 else
888 return -1;
889 }
890 if ((aflags & BSF_GLOBAL) != (bflags & BSF_GLOBAL))
891 {
892 if ((aflags & BSF_GLOBAL) != 0)
893 return -1;
894 else
895 return 1;
896 }
897
898 if (bfd_get_flavour (bfd_asymbol_bfd (a)) == bfd_target_elf_flavour
899 && bfd_get_flavour (bfd_asymbol_bfd (b)) == bfd_target_elf_flavour)
900 {
901 bfd_vma asz, bsz;
902
903 asz = 0;
904 if ((a->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) == 0)
905 asz = ((elf_symbol_type *) a)->internal_elf_sym.st_size;
906 bsz = 0;
907 if ((b->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) == 0)
908 bsz = ((elf_symbol_type *) b)->internal_elf_sym.st_size;
909 if (asz != bsz)
910 return asz > bsz ? -1 : 1;
911 }
912
913 /* Symbols that start with '.' might be section names, so sort them
914 after symbols that don't start with '.'. */
915 if (an[0] == '.' && bn[0] != '.')
916 return 1;
917 if (an[0] != '.' && bn[0] == '.')
918 return -1;
919
920 /* Finally, if we can't distinguish them in any other way, try to
921 get consistent results by sorting the symbols by name. */
922 return strcmp (an, bn);
923 }
924
925 /* Sort relocs into address order. */
926
927 static int
928 compare_relocs (const void *ap, const void *bp)
929 {
930 const arelent *a = * (const arelent **) ap;
931 const arelent *b = * (const arelent **) bp;
932
933 if (a->address > b->address)
934 return 1;
935 else if (a->address < b->address)
936 return -1;
937
938 /* So that associated relocations tied to the same address show up
939 in the correct order, we don't do any further sorting. */
940 if (a > b)
941 return 1;
942 else if (a < b)
943 return -1;
944 else
945 return 0;
946 }
947
948 /* Print an address (VMA) to the output stream in INFO.
949 If SKIP_ZEROES is TRUE, omit leading zeroes. */
950
951 static void
952 objdump_print_value (bfd_vma vma, struct disassemble_info *inf,
953 bfd_boolean skip_zeroes)
954 {
955 char buf[30];
956 char *p;
957 struct objdump_disasm_info *aux;
958
959 aux = (struct objdump_disasm_info *) inf->application_data;
960 bfd_sprintf_vma (aux->abfd, buf, vma);
961 if (! skip_zeroes)
962 p = buf;
963 else
964 {
965 for (p = buf; *p == '0'; ++p)
966 ;
967 if (*p == '\0')
968 --p;
969 }
970 (*inf->fprintf_func) (inf->stream, "%s", p);
971 }
972
973 /* Print the name of a symbol. */
974
975 static void
976 objdump_print_symname (bfd *abfd, struct disassemble_info *inf,
977 asymbol *sym)
978 {
979 char *alloc;
980 const char *name, *version_string = NULL;
981 bfd_boolean hidden = FALSE;
982
983 alloc = NULL;
984 name = bfd_asymbol_name (sym);
985 if (do_demangle && name[0] != '\0')
986 {
987 /* Demangle the name. */
988 alloc = bfd_demangle (abfd, name, demangle_flags);
989 if (alloc != NULL)
990 name = alloc;
991 }
992
993 if ((sym->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) == 0)
994 version_string = bfd_get_symbol_version_string (abfd, sym, &hidden);
995
996 if (bfd_is_und_section (bfd_get_section (sym)))
997 hidden = TRUE;
998
999 name = sanitize_string (name);
1000
1001 if (inf != NULL)
1002 {
1003 (*inf->fprintf_func) (inf->stream, "%s", name);
1004 if (version_string && *version_string != '\0')
1005 (*inf->fprintf_func) (inf->stream, hidden ? "@%s" : "@@%s",
1006 version_string);
1007 }
1008 else
1009 {
1010 printf ("%s", name);
1011 if (version_string && *version_string != '\0')
1012 printf (hidden ? "@%s" : "@@%s", version_string);
1013 }
1014
1015 if (alloc != NULL)
1016 free (alloc);
1017 }
1018
1019 static inline bfd_boolean
1020 sym_ok (bfd_boolean want_section,
1021 bfd * abfd ATTRIBUTE_UNUSED,
1022 long place,
1023 asection * sec,
1024 struct disassemble_info * inf)
1025 {
1026 if (want_section)
1027 {
1028 /* Note - we cannot just compare section pointers because they could
1029 be different, but the same... Ie the symbol that we are trying to
1030 find could have come from a separate debug info file. Under such
1031 circumstances the symbol will be associated with a section in the
1032 debug info file, whilst the section we want is in a normal file.
1033 So the section pointers will be different, but the section names
1034 will be the same. */
1035 if (strcmp (bfd_section_name (abfd, sorted_syms[place]->section),
1036 bfd_section_name (abfd, sec)) != 0)
1037 return FALSE;
1038 }
1039
1040 return inf->symbol_is_valid (sorted_syms[place], inf);
1041 }
1042
1043 /* Locate a symbol given a bfd and a section (from INFO->application_data),
1044 and a VMA. If INFO->application_data->require_sec is TRUE, then always
1045 require the symbol to be in the section. Returns NULL if there is no
1046 suitable symbol. If PLACE is not NULL, then *PLACE is set to the index
1047 of the symbol in sorted_syms. */
1048
1049 static asymbol *
1050 find_symbol_for_address (bfd_vma vma,
1051 struct disassemble_info *inf,
1052 long *place)
1053 {
1054 /* @@ Would it speed things up to cache the last two symbols returned,
1055 and maybe their address ranges? For many processors, only one memory
1056 operand can be present at a time, so the 2-entry cache wouldn't be
1057 constantly churned by code doing heavy memory accesses. */
1058
1059 /* Indices in `sorted_syms'. */
1060 long min = 0;
1061 long max_count = sorted_symcount;
1062 long thisplace;
1063 struct objdump_disasm_info *aux;
1064 bfd *abfd;
1065 asection *sec;
1066 unsigned int opb;
1067 bfd_boolean want_section;
1068 long rel_count;
1069
1070 if (sorted_symcount < 1)
1071 return NULL;
1072
1073 aux = (struct objdump_disasm_info *) inf->application_data;
1074 abfd = aux->abfd;
1075 sec = aux->sec;
1076 opb = inf->octets_per_byte;
1077
1078 /* Perform a binary search looking for the closest symbol to the
1079 required value. We are searching the range (min, max_count]. */
1080 while (min + 1 < max_count)
1081 {
1082 asymbol *sym;
1083
1084 thisplace = (max_count + min) / 2;
1085 sym = sorted_syms[thisplace];
1086
1087 if (bfd_asymbol_value (sym) > vma)
1088 max_count = thisplace;
1089 else if (bfd_asymbol_value (sym) < vma)
1090 min = thisplace;
1091 else
1092 {
1093 min = thisplace;
1094 break;
1095 }
1096 }
1097
1098 /* The symbol we want is now in min, the low end of the range we
1099 were searching. If there are several symbols with the same
1100 value, we want the first (non-section/non-debugging) one. */
1101 thisplace = min;
1102 while (thisplace > 0
1103 && (bfd_asymbol_value (sorted_syms[thisplace])
1104 == bfd_asymbol_value (sorted_syms[thisplace - 1]))
1105 && ((sorted_syms[thisplace - 1]->flags
1106 & (BSF_SECTION_SYM | BSF_DEBUGGING)) == 0)
1107 )
1108 --thisplace;
1109
1110 /* Prefer a symbol in the current section if we have multple symbols
1111 with the same value, as can occur with overlays or zero size
1112 sections. */
1113 min = thisplace;
1114 while (min < max_count
1115 && (bfd_asymbol_value (sorted_syms[min])
1116 == bfd_asymbol_value (sorted_syms[thisplace])))
1117 {
1118 if (sym_ok (TRUE, abfd, min, sec, inf))
1119 {
1120 thisplace = min;
1121
1122 if (place != NULL)
1123 *place = thisplace;
1124
1125 return sorted_syms[thisplace];
1126 }
1127 ++min;
1128 }
1129
1130 /* If the file is relocatable, and the symbol could be from this
1131 section, prefer a symbol from this section over symbols from
1132 others, even if the other symbol's value might be closer.
1133
1134 Note that this may be wrong for some symbol references if the
1135 sections have overlapping memory ranges, but in that case there's
1136 no way to tell what's desired without looking at the relocation
1137 table.
1138
1139 Also give the target a chance to reject symbols. */
1140 want_section = (aux->require_sec
1141 || ((abfd->flags & HAS_RELOC) != 0
1142 && vma >= bfd_get_section_vma (abfd, sec)
1143 && vma < (bfd_get_section_vma (abfd, sec)
1144 + bfd_section_size (abfd, sec) / opb)));
1145
1146 if (! sym_ok (want_section, abfd, thisplace, sec, inf))
1147 {
1148 long i;
1149 long newplace = sorted_symcount;
1150
1151 for (i = min - 1; i >= 0; i--)
1152 {
1153 if (sym_ok (want_section, abfd, i, sec, inf))
1154 {
1155 if (newplace == sorted_symcount)
1156 newplace = i;
1157
1158 if (bfd_asymbol_value (sorted_syms[i])
1159 != bfd_asymbol_value (sorted_syms[newplace]))
1160 break;
1161
1162 /* Remember this symbol and keep searching until we reach
1163 an earlier address. */
1164 newplace = i;
1165 }
1166 }
1167
1168 if (newplace != sorted_symcount)
1169 thisplace = newplace;
1170 else
1171 {
1172 /* We didn't find a good symbol with a smaller value.
1173 Look for one with a larger value. */
1174 for (i = thisplace + 1; i < sorted_symcount; i++)
1175 {
1176 if (sym_ok (want_section, abfd, i, sec, inf))
1177 {
1178 thisplace = i;
1179 break;
1180 }
1181 }
1182 }
1183
1184 if (! sym_ok (want_section, abfd, thisplace, sec, inf))
1185 /* There is no suitable symbol. */
1186 return NULL;
1187 }
1188
1189 /* If we have not found an exact match for the specified address
1190 and we have dynamic relocations available, then we can produce
1191 a better result by matching a relocation to the address and
1192 using the symbol associated with that relocation. */
1193 rel_count = aux->dynrelcount;
1194 if (!want_section
1195 && sorted_syms[thisplace]->value != vma
1196 && rel_count > 0
1197 && aux->dynrelbuf != NULL
1198 && aux->dynrelbuf[0]->address <= vma
1199 && aux->dynrelbuf[rel_count - 1]->address >= vma
1200 /* If we have matched a synthetic symbol, then stick with that. */
1201 && (sorted_syms[thisplace]->flags & BSF_SYNTHETIC) == 0)
1202 {
1203 arelent ** rel_low;
1204 arelent ** rel_high;
1205
1206 rel_low = aux->dynrelbuf;
1207 rel_high = rel_low + rel_count - 1;
1208 while (rel_low <= rel_high)
1209 {
1210 arelent **rel_mid = &rel_low[(rel_high - rel_low) / 2];
1211 arelent * rel = *rel_mid;
1212
1213 if (rel->address == vma)
1214 {
1215 /* Absolute relocations do not provide a more helpful
1216 symbolic address. Find a non-absolute relocation
1217 with the same address. */
1218 arelent **rel_vma = rel_mid;
1219 for (rel_mid--;
1220 rel_mid >= rel_low && rel_mid[0]->address == vma;
1221 rel_mid--)
1222 rel_vma = rel_mid;
1223
1224 for (; rel_vma <= rel_high && rel_vma[0]->address == vma;
1225 rel_vma++)
1226 {
1227 rel = *rel_vma;
1228 if (rel->sym_ptr_ptr != NULL
1229 && ! bfd_is_abs_section ((* rel->sym_ptr_ptr)->section))
1230 {
1231 if (place != NULL)
1232 * place = thisplace;
1233 return * rel->sym_ptr_ptr;
1234 }
1235 }
1236 break;
1237 }
1238
1239 if (vma < rel->address)
1240 rel_high = rel_mid;
1241 else if (vma >= rel_mid[1]->address)
1242 rel_low = rel_mid + 1;
1243 else
1244 break;
1245 }
1246 }
1247
1248 if (place != NULL)
1249 *place = thisplace;
1250
1251 return sorted_syms[thisplace];
1252 }
1253
1254 /* Print an address and the offset to the nearest symbol. */
1255
1256 static void
1257 objdump_print_addr_with_sym (bfd *abfd, asection *sec, asymbol *sym,
1258 bfd_vma vma, struct disassemble_info *inf,
1259 bfd_boolean skip_zeroes)
1260 {
1261 objdump_print_value (vma, inf, skip_zeroes);
1262
1263 if (sym == NULL)
1264 {
1265 bfd_vma secaddr;
1266
1267 (*inf->fprintf_func) (inf->stream, " <%s",
1268 sanitize_string (bfd_get_section_name (abfd, sec)));
1269 secaddr = bfd_get_section_vma (abfd, sec);
1270 if (vma < secaddr)
1271 {
1272 (*inf->fprintf_func) (inf->stream, "-0x");
1273 objdump_print_value (secaddr - vma, inf, TRUE);
1274 }
1275 else if (vma > secaddr)
1276 {
1277 (*inf->fprintf_func) (inf->stream, "+0x");
1278 objdump_print_value (vma - secaddr, inf, TRUE);
1279 }
1280 (*inf->fprintf_func) (inf->stream, ">");
1281 }
1282 else
1283 {
1284 (*inf->fprintf_func) (inf->stream, " <");
1285
1286 objdump_print_symname (abfd, inf, sym);
1287
1288 if (bfd_asymbol_value (sym) == vma)
1289 ;
1290 /* Undefined symbols in an executables and dynamic objects do not have
1291 a value associated with them, so it does not make sense to display
1292 an offset relative to them. Normally we would not be provided with
1293 this kind of symbol, but the target backend might choose to do so,
1294 and the code in find_symbol_for_address might return an as yet
1295 unresolved symbol associated with a dynamic reloc. */
1296 else if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC))
1297 && bfd_is_und_section (sym->section))
1298 ;
1299 else if (bfd_asymbol_value (sym) > vma)
1300 {
1301 (*inf->fprintf_func) (inf->stream, "-0x");
1302 objdump_print_value (bfd_asymbol_value (sym) - vma, inf, TRUE);
1303 }
1304 else if (vma > bfd_asymbol_value (sym))
1305 {
1306 (*inf->fprintf_func) (inf->stream, "+0x");
1307 objdump_print_value (vma - bfd_asymbol_value (sym), inf, TRUE);
1308 }
1309
1310 (*inf->fprintf_func) (inf->stream, ">");
1311 }
1312
1313 if (display_file_offsets)
1314 inf->fprintf_func (inf->stream, _(" (File Offset: 0x%lx)"),
1315 (long int)(sec->filepos + (vma - sec->vma)));
1316 }
1317
1318 /* Print an address (VMA), symbolically if possible.
1319 If SKIP_ZEROES is TRUE, don't output leading zeroes. */
1320
1321 static void
1322 objdump_print_addr (bfd_vma vma,
1323 struct disassemble_info *inf,
1324 bfd_boolean skip_zeroes)
1325 {
1326 struct objdump_disasm_info *aux;
1327 asymbol *sym = NULL;
1328 bfd_boolean skip_find = FALSE;
1329
1330 aux = (struct objdump_disasm_info *) inf->application_data;
1331
1332 if (sorted_symcount < 1)
1333 {
1334 (*inf->fprintf_func) (inf->stream, "0x");
1335 objdump_print_value (vma, inf, skip_zeroes);
1336
1337 if (display_file_offsets)
1338 inf->fprintf_func (inf->stream, _(" (File Offset: 0x%lx)"),
1339 (long int)(aux->sec->filepos + (vma - aux->sec->vma)));
1340 return;
1341 }
1342
1343 if (aux->reloc != NULL
1344 && aux->reloc->sym_ptr_ptr != NULL
1345 && * aux->reloc->sym_ptr_ptr != NULL)
1346 {
1347 sym = * aux->reloc->sym_ptr_ptr;
1348
1349 /* Adjust the vma to the reloc. */
1350 vma += bfd_asymbol_value (sym);
1351
1352 if (bfd_is_und_section (bfd_get_section (sym)))
1353 skip_find = TRUE;
1354 }
1355
1356 if (!skip_find)
1357 sym = find_symbol_for_address (vma, inf, NULL);
1358
1359 objdump_print_addr_with_sym (aux->abfd, aux->sec, sym, vma, inf,
1360 skip_zeroes);
1361 }
1362
1363 /* Print VMA to INFO. This function is passed to the disassembler
1364 routine. */
1365
1366 static void
1367 objdump_print_address (bfd_vma vma, struct disassemble_info *inf)
1368 {
1369 objdump_print_addr (vma, inf, ! prefix_addresses);
1370 }
1371
1372 /* Determine if the given address has a symbol associated with it. */
1373
1374 static int
1375 objdump_symbol_at_address (bfd_vma vma, struct disassemble_info * inf)
1376 {
1377 asymbol * sym;
1378
1379 sym = find_symbol_for_address (vma, inf, NULL);
1380
1381 return (sym != NULL && (bfd_asymbol_value (sym) == vma));
1382 }
1383
1384 /* Hold the last function name and the last line number we displayed
1385 in a disassembly. */
1386
1387 static char *prev_functionname;
1388 static unsigned int prev_line;
1389 static unsigned int prev_discriminator;
1390
1391 /* We keep a list of all files that we have seen when doing a
1392 disassembly with source, so that we know how much of the file to
1393 display. This can be important for inlined functions. */
1394
1395 struct print_file_list
1396 {
1397 struct print_file_list *next;
1398 const char *filename;
1399 const char *modname;
1400 const char *map;
1401 size_t mapsize;
1402 const char **linemap;
1403 unsigned maxline;
1404 unsigned last_line;
1405 unsigned max_printed;
1406 int first;
1407 };
1408
1409 static struct print_file_list *print_files;
1410
1411 /* The number of preceding context lines to show when we start
1412 displaying a file for the first time. */
1413
1414 #define SHOW_PRECEDING_CONTEXT_LINES (5)
1415
1416 /* Read a complete file into memory. */
1417
1418 static const char *
1419 slurp_file (const char *fn, size_t *size, struct stat *fst)
1420 {
1421 #ifdef HAVE_MMAP
1422 int ps = getpagesize ();
1423 size_t msize;
1424 #endif
1425 const char *map;
1426 int fd = open (fn, O_RDONLY | O_BINARY);
1427
1428 if (fd < 0)
1429 return NULL;
1430 if (fstat (fd, fst) < 0)
1431 {
1432 close (fd);
1433 return NULL;
1434 }
1435 *size = fst->st_size;
1436 #ifdef HAVE_MMAP
1437 msize = (*size + ps - 1) & ~(ps - 1);
1438 map = mmap (NULL, msize, PROT_READ, MAP_SHARED, fd, 0);
1439 if (map != (char *) -1L)
1440 {
1441 close (fd);
1442 return map;
1443 }
1444 #endif
1445 map = (const char *) malloc (*size);
1446 if (!map || (size_t) read (fd, (char *) map, *size) != *size)
1447 {
1448 free ((void *) map);
1449 map = NULL;
1450 }
1451 close (fd);
1452 return map;
1453 }
1454
1455 #define line_map_decrease 5
1456
1457 /* Precompute array of lines for a mapped file. */
1458
1459 static const char **
1460 index_file (const char *map, size_t size, unsigned int *maxline)
1461 {
1462 const char *p, *lstart, *end;
1463 int chars_per_line = 45; /* First iteration will use 40. */
1464 unsigned int lineno;
1465 const char **linemap = NULL;
1466 unsigned long line_map_size = 0;
1467
1468 lineno = 0;
1469 lstart = map;
1470 end = map + size;
1471
1472 for (p = map; p < end; p++)
1473 {
1474 if (*p == '\n')
1475 {
1476 if (p + 1 < end && p[1] == '\r')
1477 p++;
1478 }
1479 else if (*p == '\r')
1480 {
1481 if (p + 1 < end && p[1] == '\n')
1482 p++;
1483 }
1484 else
1485 continue;
1486
1487 /* End of line found. */
1488
1489 if (linemap == NULL || line_map_size < lineno + 1)
1490 {
1491 unsigned long newsize;
1492
1493 chars_per_line -= line_map_decrease;
1494 if (chars_per_line <= 1)
1495 chars_per_line = 1;
1496 line_map_size = size / chars_per_line + 1;
1497 if (line_map_size < lineno + 1)
1498 line_map_size = lineno + 1;
1499 newsize = line_map_size * sizeof (char *);
1500 linemap = (const char **) xrealloc (linemap, newsize);
1501 }
1502
1503 linemap[lineno++] = lstart;
1504 lstart = p + 1;
1505 }
1506
1507 *maxline = lineno;
1508 return linemap;
1509 }
1510
1511 /* Tries to open MODNAME, and if successful adds a node to print_files
1512 linked list and returns that node. Returns NULL on failure. */
1513
1514 static struct print_file_list *
1515 try_print_file_open (const char *origname, const char *modname, struct stat *fst)
1516 {
1517 struct print_file_list *p;
1518
1519 p = (struct print_file_list *) xmalloc (sizeof (struct print_file_list));
1520
1521 p->map = slurp_file (modname, &p->mapsize, fst);
1522 if (p->map == NULL)
1523 {
1524 free (p);
1525 return NULL;
1526 }
1527
1528 p->linemap = index_file (p->map, p->mapsize, &p->maxline);
1529 p->last_line = 0;
1530 p->max_printed = 0;
1531 p->filename = origname;
1532 p->modname = modname;
1533 p->next = print_files;
1534 p->first = 1;
1535 print_files = p;
1536 return p;
1537 }
1538
1539 /* If the source file, as described in the symtab, is not found
1540 try to locate it in one of the paths specified with -I
1541 If found, add location to print_files linked list. */
1542
1543 static struct print_file_list *
1544 update_source_path (const char *filename, bfd *abfd)
1545 {
1546 struct print_file_list *p;
1547 const char *fname;
1548 struct stat fst;
1549 int i;
1550
1551 p = try_print_file_open (filename, filename, &fst);
1552 if (p == NULL)
1553 {
1554 if (include_path_count == 0)
1555 return NULL;
1556
1557 /* Get the name of the file. */
1558 fname = lbasename (filename);
1559
1560 /* If file exists under a new path, we need to add it to the list
1561 so that show_line knows about it. */
1562 for (i = 0; i < include_path_count; i++)
1563 {
1564 char *modname = concat (include_paths[i], "/", fname,
1565 (const char *) 0);
1566
1567 p = try_print_file_open (filename, modname, &fst);
1568 if (p)
1569 break;
1570
1571 free (modname);
1572 }
1573 }
1574
1575 if (p != NULL)
1576 {
1577 long mtime = bfd_get_mtime (abfd);
1578
1579 if (fst.st_mtime > mtime)
1580 warn (_("source file %s is more recent than object file\n"),
1581 filename);
1582 }
1583
1584 return p;
1585 }
1586
1587 /* Print a source file line. */
1588
1589 static void
1590 print_line (struct print_file_list *p, unsigned int linenum)
1591 {
1592 const char *l;
1593 size_t len;
1594
1595 --linenum;
1596 if (linenum >= p->maxline)
1597 return;
1598 l = p->linemap [linenum];
1599 /* Test fwrite return value to quiet glibc warning. */
1600 len = strcspn (l, "\n\r");
1601 if (len == 0 || fwrite (l, len, 1, stdout) == 1)
1602 putchar ('\n');
1603 }
1604
1605 /* Print a range of source code lines. */
1606
1607 static void
1608 dump_lines (struct print_file_list *p, unsigned int start, unsigned int end)
1609 {
1610 if (p->map == NULL)
1611 return;
1612 while (start <= end)
1613 {
1614 print_line (p, start);
1615 start++;
1616 }
1617 }
1618
1619 /* Show the line number, or the source line, in a disassembly
1620 listing. */
1621
1622 static void
1623 show_line (bfd *abfd, asection *section, bfd_vma addr_offset)
1624 {
1625 const char *filename;
1626 const char *functionname;
1627 unsigned int linenumber;
1628 unsigned int discriminator;
1629 bfd_boolean reloc;
1630 char *path = NULL;
1631
1632 if (! with_line_numbers && ! with_source_code)
1633 return;
1634
1635 if (! bfd_find_nearest_line_discriminator (abfd, section, syms, addr_offset,
1636 &filename, &functionname,
1637 &linenumber, &discriminator))
1638 return;
1639
1640 if (filename != NULL && *filename == '\0')
1641 filename = NULL;
1642 if (functionname != NULL && *functionname == '\0')
1643 functionname = NULL;
1644
1645 if (filename
1646 && IS_ABSOLUTE_PATH (filename)
1647 && prefix)
1648 {
1649 char *path_up;
1650 const char *fname = filename;
1651
1652 path = xmalloc (prefix_length + PATH_MAX + 1);
1653
1654 if (prefix_length)
1655 memcpy (path, prefix, prefix_length);
1656 path_up = path + prefix_length;
1657
1658 /* Build relocated filename, stripping off leading directories
1659 from the initial filename if requested. */
1660 if (prefix_strip > 0)
1661 {
1662 int level = 0;
1663 const char *s;
1664
1665 /* Skip selected directory levels. */
1666 for (s = fname + 1; *s != '\0' && level < prefix_strip; s++)
1667 if (IS_DIR_SEPARATOR(*s))
1668 {
1669 fname = s;
1670 level++;
1671 }
1672 }
1673
1674 /* Update complete filename. */
1675 strncpy (path_up, fname, PATH_MAX);
1676 path_up[PATH_MAX] = '\0';
1677
1678 filename = path;
1679 reloc = TRUE;
1680 }
1681 else
1682 reloc = FALSE;
1683
1684 if (with_line_numbers)
1685 {
1686 if (functionname != NULL
1687 && (prev_functionname == NULL
1688 || strcmp (functionname, prev_functionname) != 0))
1689 {
1690 printf ("%s():\n", sanitize_string (functionname));
1691 prev_line = -1;
1692 }
1693 if (linenumber > 0
1694 && (linenumber != prev_line
1695 || discriminator != prev_discriminator))
1696 {
1697 if (discriminator > 0)
1698 printf ("%s:%u (discriminator %u)\n",
1699 filename == NULL ? "???" : sanitize_string (filename),
1700 linenumber, discriminator);
1701 else
1702 printf ("%s:%u\n", filename == NULL
1703 ? "???" : sanitize_string (filename),
1704 linenumber);
1705 }
1706 if (unwind_inlines)
1707 {
1708 const char *filename2;
1709 const char *functionname2;
1710 unsigned line2;
1711
1712 while (bfd_find_inliner_info (abfd, &filename2, &functionname2,
1713 &line2))
1714 {
1715 printf ("inlined by %s:%u",
1716 sanitize_string (filename2), line2);
1717 printf (" (%s)\n", sanitize_string (functionname2));
1718 }
1719 }
1720 }
1721
1722 if (with_source_code
1723 && filename != NULL
1724 && linenumber > 0)
1725 {
1726 struct print_file_list **pp, *p;
1727 unsigned l;
1728
1729 for (pp = &print_files; *pp != NULL; pp = &(*pp)->next)
1730 if (filename_cmp ((*pp)->filename, filename) == 0)
1731 break;
1732 p = *pp;
1733
1734 if (p == NULL)
1735 {
1736 if (reloc)
1737 filename = xstrdup (filename);
1738 p = update_source_path (filename, abfd);
1739 }
1740
1741 if (p != NULL && linenumber != p->last_line)
1742 {
1743 if (file_start_context && p->first)
1744 l = 1;
1745 else
1746 {
1747 l = linenumber - SHOW_PRECEDING_CONTEXT_LINES;
1748 if (l >= linenumber)
1749 l = 1;
1750 if (p->max_printed >= l)
1751 {
1752 if (p->max_printed < linenumber)
1753 l = p->max_printed + 1;
1754 else
1755 l = linenumber;
1756 }
1757 }
1758 dump_lines (p, l, linenumber);
1759 if (p->max_printed < linenumber)
1760 p->max_printed = linenumber;
1761 p->last_line = linenumber;
1762 p->first = 0;
1763 }
1764 }
1765
1766 if (functionname != NULL
1767 && (prev_functionname == NULL
1768 || strcmp (functionname, prev_functionname) != 0))
1769 {
1770 if (prev_functionname != NULL)
1771 free (prev_functionname);
1772 prev_functionname = (char *) xmalloc (strlen (functionname) + 1);
1773 strcpy (prev_functionname, functionname);
1774 }
1775
1776 if (linenumber > 0 && linenumber != prev_line)
1777 prev_line = linenumber;
1778
1779 if (discriminator != prev_discriminator)
1780 prev_discriminator = discriminator;
1781
1782 if (path)
1783 free (path);
1784 }
1785
1786 /* Pseudo FILE object for strings. */
1787 typedef struct
1788 {
1789 char *buffer;
1790 size_t pos;
1791 size_t alloc;
1792 } SFILE;
1793
1794 /* sprintf to a "stream". */
1795
1796 static int ATTRIBUTE_PRINTF_2
1797 objdump_sprintf (SFILE *f, const char *format, ...)
1798 {
1799 size_t n;
1800 va_list args;
1801
1802 while (1)
1803 {
1804 size_t space = f->alloc - f->pos;
1805
1806 va_start (args, format);
1807 n = vsnprintf (f->buffer + f->pos, space, format, args);
1808 va_end (args);
1809
1810 if (space > n)
1811 break;
1812
1813 f->alloc = (f->alloc + n) * 2;
1814 f->buffer = (char *) xrealloc (f->buffer, f->alloc);
1815 }
1816 f->pos += n;
1817
1818 return n;
1819 }
1820
1821 /* The number of zeroes we want to see before we start skipping them.
1822 The number is arbitrarily chosen. */
1823
1824 #define DEFAULT_SKIP_ZEROES 8
1825
1826 /* The number of zeroes to skip at the end of a section. If the
1827 number of zeroes at the end is between SKIP_ZEROES_AT_END and
1828 SKIP_ZEROES, they will be disassembled. If there are fewer than
1829 SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic
1830 attempt to avoid disassembling zeroes inserted by section
1831 alignment. */
1832
1833 #define DEFAULT_SKIP_ZEROES_AT_END 3
1834
1835 /* Disassemble some data in memory between given values. */
1836
1837 static void
1838 disassemble_bytes (struct disassemble_info * inf,
1839 disassembler_ftype disassemble_fn,
1840 bfd_boolean insns,
1841 bfd_byte * data,
1842 bfd_vma start_offset,
1843 bfd_vma stop_offset,
1844 bfd_vma rel_offset,
1845 arelent *** relppp,
1846 arelent ** relppend)
1847 {
1848 struct objdump_disasm_info *aux;
1849 asection *section;
1850 int octets_per_line;
1851 int skip_addr_chars;
1852 bfd_vma addr_offset;
1853 unsigned int opb = inf->octets_per_byte;
1854 unsigned int skip_zeroes = inf->skip_zeroes;
1855 unsigned int skip_zeroes_at_end = inf->skip_zeroes_at_end;
1856 int octets = opb;
1857 SFILE sfile;
1858
1859 aux = (struct objdump_disasm_info *) inf->application_data;
1860 section = aux->sec;
1861
1862 sfile.alloc = 120;
1863 sfile.buffer = (char *) xmalloc (sfile.alloc);
1864 sfile.pos = 0;
1865
1866 if (insn_width)
1867 octets_per_line = insn_width;
1868 else if (insns)
1869 octets_per_line = 4;
1870 else
1871 octets_per_line = 16;
1872
1873 /* Figure out how many characters to skip at the start of an
1874 address, to make the disassembly look nicer. We discard leading
1875 zeroes in chunks of 4, ensuring that there is always a leading
1876 zero remaining. */
1877 skip_addr_chars = 0;
1878 if (! prefix_addresses)
1879 {
1880 char buf[30];
1881
1882 bfd_sprintf_vma (aux->abfd, buf, section->vma + section->size / opb);
1883
1884 while (buf[skip_addr_chars] == '0')
1885 ++skip_addr_chars;
1886
1887 /* Don't discard zeros on overflow. */
1888 if (buf[skip_addr_chars] == '\0' && section->vma != 0)
1889 skip_addr_chars = 0;
1890
1891 if (skip_addr_chars != 0)
1892 skip_addr_chars = (skip_addr_chars - 1) & -4;
1893 }
1894
1895 inf->insn_info_valid = 0;
1896
1897 addr_offset = start_offset;
1898 while (addr_offset < stop_offset)
1899 {
1900 bfd_vma z;
1901 bfd_boolean need_nl = FALSE;
1902 int previous_octets;
1903
1904 /* Remember the length of the previous instruction. */
1905 previous_octets = octets;
1906 octets = 0;
1907
1908 /* Make sure we don't use relocs from previous instructions. */
1909 aux->reloc = NULL;
1910
1911 /* If we see more than SKIP_ZEROES octets of zeroes, we just
1912 print `...'. */
1913 for (z = addr_offset * opb; z < stop_offset * opb; z++)
1914 if (data[z] != 0)
1915 break;
1916 if (! disassemble_zeroes
1917 && (inf->insn_info_valid == 0
1918 || inf->branch_delay_insns == 0)
1919 && (z - addr_offset * opb >= skip_zeroes
1920 || (z == stop_offset * opb &&
1921 z - addr_offset * opb < skip_zeroes_at_end)))
1922 {
1923 /* If there are more nonzero octets to follow, we only skip
1924 zeroes in multiples of 4, to try to avoid running over
1925 the start of an instruction which happens to start with
1926 zero. */
1927 if (z != stop_offset * opb)
1928 z = addr_offset * opb + ((z - addr_offset * opb) &~ 3);
1929
1930 octets = z - addr_offset * opb;
1931
1932 /* If we are going to display more data, and we are displaying
1933 file offsets, then tell the user how many zeroes we skip
1934 and the file offset from where we resume dumping. */
1935 if (display_file_offsets && ((addr_offset + (octets / opb)) < stop_offset))
1936 printf ("\t... (skipping %d zeroes, resuming at file offset: 0x%lx)\n",
1937 octets / opb,
1938 (unsigned long) (section->filepos
1939 + (addr_offset + (octets / opb))));
1940 else
1941 printf ("\t...\n");
1942 }
1943 else
1944 {
1945 char buf[50];
1946 int bpc = 0;
1947 int pb = 0;
1948
1949 if (with_line_numbers || with_source_code)
1950 show_line (aux->abfd, section, addr_offset);
1951
1952 if (! prefix_addresses)
1953 {
1954 char *s;
1955
1956 bfd_sprintf_vma (aux->abfd, buf, section->vma + addr_offset);
1957 for (s = buf + skip_addr_chars; *s == '0'; s++)
1958 *s = ' ';
1959 if (*s == '\0')
1960 *--s = '0';
1961 printf ("%s:\t", buf + skip_addr_chars);
1962 }
1963 else
1964 {
1965 aux->require_sec = TRUE;
1966 objdump_print_address (section->vma + addr_offset, inf);
1967 aux->require_sec = FALSE;
1968 putchar (' ');
1969 }
1970
1971 if (insns)
1972 {
1973 sfile.pos = 0;
1974 inf->fprintf_func = (fprintf_ftype) objdump_sprintf;
1975 inf->stream = &sfile;
1976 inf->bytes_per_line = 0;
1977 inf->bytes_per_chunk = 0;
1978 inf->flags = ((disassemble_all ? DISASSEMBLE_DATA : 0)
1979 | (wide_output ? WIDE_OUTPUT : 0));
1980 if (machine)
1981 inf->flags |= USER_SPECIFIED_MACHINE_TYPE;
1982
1983 if (inf->disassembler_needs_relocs
1984 && (bfd_get_file_flags (aux->abfd) & EXEC_P) == 0
1985 && (bfd_get_file_flags (aux->abfd) & DYNAMIC) == 0
1986 && *relppp < relppend)
1987 {
1988 bfd_signed_vma distance_to_rel;
1989
1990 distance_to_rel = (**relppp)->address
1991 - (rel_offset + addr_offset);
1992
1993 /* Check to see if the current reloc is associated with
1994 the instruction that we are about to disassemble. */
1995 if (distance_to_rel == 0
1996 /* FIXME: This is wrong. We are trying to catch
1997 relocs that are addressed part way through the
1998 current instruction, as might happen with a packed
1999 VLIW instruction. Unfortunately we do not know the
2000 length of the current instruction since we have not
2001 disassembled it yet. Instead we take a guess based
2002 upon the length of the previous instruction. The
2003 proper solution is to have a new target-specific
2004 disassembler function which just returns the length
2005 of an instruction at a given address without trying
2006 to display its disassembly. */
2007 || (distance_to_rel > 0
2008 && distance_to_rel < (bfd_signed_vma) (previous_octets/ opb)))
2009 {
2010 inf->flags |= INSN_HAS_RELOC;
2011 aux->reloc = **relppp;
2012 }
2013 }
2014
2015 if (! disassemble_all
2016 && (section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
2017 == (SEC_CODE | SEC_HAS_CONTENTS))
2018 /* Set a stop_vma so that the disassembler will not read
2019 beyond the next symbol. We assume that symbols appear on
2020 the boundaries between instructions. We only do this when
2021 disassembling code of course, and when -D is in effect. */
2022 inf->stop_vma = section->vma + stop_offset;
2023
2024 inf->stop_offset = stop_offset;
2025 octets = (*disassemble_fn) (section->vma + addr_offset, inf);
2026
2027 inf->stop_vma = 0;
2028 inf->fprintf_func = (fprintf_ftype) fprintf;
2029 inf->stream = stdout;
2030 if (insn_width == 0 && inf->bytes_per_line != 0)
2031 octets_per_line = inf->bytes_per_line;
2032 if (octets < (int) opb)
2033 {
2034 if (sfile.pos)
2035 printf ("%s\n", sfile.buffer);
2036 if (octets >= 0)
2037 {
2038 non_fatal (_("disassemble_fn returned length %d"),
2039 octets);
2040 exit_status = 1;
2041 }
2042 break;
2043 }
2044 }
2045 else
2046 {
2047 bfd_vma j;
2048
2049 octets = octets_per_line;
2050 if (addr_offset + octets / opb > stop_offset)
2051 octets = (stop_offset - addr_offset) * opb;
2052
2053 for (j = addr_offset * opb; j < addr_offset * opb + octets; ++j)
2054 {
2055 if (ISPRINT (data[j]))
2056 buf[j - addr_offset * opb] = data[j];
2057 else
2058 buf[j - addr_offset * opb] = '.';
2059 }
2060 buf[j - addr_offset * opb] = '\0';
2061 }
2062
2063 if (prefix_addresses
2064 ? show_raw_insn > 0
2065 : show_raw_insn >= 0)
2066 {
2067 bfd_vma j;
2068
2069 /* If ! prefix_addresses and ! wide_output, we print
2070 octets_per_line octets per line. */
2071 pb = octets;
2072 if (pb > octets_per_line && ! prefix_addresses && ! wide_output)
2073 pb = octets_per_line;
2074
2075 if (inf->bytes_per_chunk)
2076 bpc = inf->bytes_per_chunk;
2077 else
2078 bpc = 1;
2079
2080 for (j = addr_offset * opb; j < addr_offset * opb + pb; j += bpc)
2081 {
2082 /* PR 21580: Check for a buffer ending early. */
2083 if (j + bpc <= stop_offset * opb)
2084 {
2085 int k;
2086
2087 if (inf->display_endian == BFD_ENDIAN_LITTLE)
2088 {
2089 for (k = bpc - 1; k >= 0; k--)
2090 printf ("%02x", (unsigned) data[j + k]);
2091 }
2092 else
2093 {
2094 for (k = 0; k < bpc; k++)
2095 printf ("%02x", (unsigned) data[j + k]);
2096 }
2097 }
2098 putchar (' ');
2099 }
2100
2101 for (; pb < octets_per_line; pb += bpc)
2102 {
2103 int k;
2104
2105 for (k = 0; k < bpc; k++)
2106 printf (" ");
2107 putchar (' ');
2108 }
2109
2110 /* Separate raw data from instruction by extra space. */
2111 if (insns)
2112 putchar ('\t');
2113 else
2114 printf (" ");
2115 }
2116
2117 if (! insns)
2118 printf ("%s", buf);
2119 else if (sfile.pos)
2120 printf ("%s", sfile.buffer);
2121
2122 if (prefix_addresses
2123 ? show_raw_insn > 0
2124 : show_raw_insn >= 0)
2125 {
2126 while (pb < octets)
2127 {
2128 bfd_vma j;
2129 char *s;
2130
2131 putchar ('\n');
2132 j = addr_offset * opb + pb;
2133
2134 bfd_sprintf_vma (aux->abfd, buf, section->vma + j / opb);
2135 for (s = buf + skip_addr_chars; *s == '0'; s++)
2136 *s = ' ';
2137 if (*s == '\0')
2138 *--s = '0';
2139 printf ("%s:\t", buf + skip_addr_chars);
2140
2141 pb += octets_per_line;
2142 if (pb > octets)
2143 pb = octets;
2144 for (; j < addr_offset * opb + pb; j += bpc)
2145 {
2146 /* PR 21619: Check for a buffer ending early. */
2147 if (j + bpc <= stop_offset * opb)
2148 {
2149 int k;
2150
2151 if (inf->display_endian == BFD_ENDIAN_LITTLE)
2152 {
2153 for (k = bpc - 1; k >= 0; k--)
2154 printf ("%02x", (unsigned) data[j + k]);
2155 }
2156 else
2157 {
2158 for (k = 0; k < bpc; k++)
2159 printf ("%02x", (unsigned) data[j + k]);
2160 }
2161 }
2162 putchar (' ');
2163 }
2164 }
2165 }
2166
2167 if (!wide_output)
2168 putchar ('\n');
2169 else
2170 need_nl = TRUE;
2171 }
2172
2173 while ((*relppp) < relppend
2174 && (**relppp)->address < rel_offset + addr_offset + octets / opb)
2175 {
2176 if (dump_reloc_info || dump_dynamic_reloc_info)
2177 {
2178 arelent *q;
2179
2180 q = **relppp;
2181
2182 if (wide_output)
2183 putchar ('\t');
2184 else
2185 printf ("\t\t\t");
2186
2187 objdump_print_value (section->vma - rel_offset + q->address,
2188 inf, TRUE);
2189
2190 if (q->howto == NULL)
2191 printf (": *unknown*\t");
2192 else if (q->howto->name)
2193 printf (": %s\t", q->howto->name);
2194 else
2195 printf (": %d\t", q->howto->type);
2196
2197 if (q->sym_ptr_ptr == NULL || *q->sym_ptr_ptr == NULL)
2198 printf ("*unknown*");
2199 else
2200 {
2201 const char *sym_name;
2202
2203 sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
2204 if (sym_name != NULL && *sym_name != '\0')
2205 objdump_print_symname (aux->abfd, inf, *q->sym_ptr_ptr);
2206 else
2207 {
2208 asection *sym_sec;
2209
2210 sym_sec = bfd_get_section (*q->sym_ptr_ptr);
2211 sym_name = bfd_get_section_name (aux->abfd, sym_sec);
2212 if (sym_name == NULL || *sym_name == '\0')
2213 sym_name = "*unknown*";
2214 printf ("%s", sanitize_string (sym_name));
2215 }
2216 }
2217
2218 if (q->addend)
2219 {
2220 bfd_signed_vma addend = q->addend;
2221 if (addend < 0)
2222 {
2223 printf ("-0x");
2224 addend = -addend;
2225 }
2226 else
2227 printf ("+0x");
2228 objdump_print_value (addend, inf, TRUE);
2229 }
2230
2231 printf ("\n");
2232 need_nl = FALSE;
2233 }
2234 ++(*relppp);
2235 }
2236
2237 if (need_nl)
2238 printf ("\n");
2239
2240 addr_offset += octets / opb;
2241 }
2242
2243 free (sfile.buffer);
2244 }
2245
2246 static void
2247 disassemble_section (bfd *abfd, asection *section, void *inf)
2248 {
2249 const struct elf_backend_data * bed;
2250 bfd_vma sign_adjust = 0;
2251 struct disassemble_info * pinfo = (struct disassemble_info *) inf;
2252 struct objdump_disasm_info * paux;
2253 unsigned int opb = pinfo->octets_per_byte;
2254 bfd_byte * data = NULL;
2255 bfd_size_type datasize = 0;
2256 arelent ** rel_pp = NULL;
2257 arelent ** rel_ppstart = NULL;
2258 arelent ** rel_ppend;
2259 bfd_vma stop_offset;
2260 asymbol * sym = NULL;
2261 long place = 0;
2262 long rel_count;
2263 bfd_vma rel_offset;
2264 unsigned long addr_offset;
2265 bfd_boolean do_print;
2266 enum loop_control
2267 {
2268 stop_offset_reached,
2269 function_sym,
2270 next_sym
2271 } loop_until;
2272
2273 /* Sections that do not contain machine
2274 code are not normally disassembled. */
2275 if (! disassemble_all
2276 && only_list == NULL
2277 && ((section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
2278 != (SEC_CODE | SEC_HAS_CONTENTS)))
2279 return;
2280
2281 if (! process_section_p (section))
2282 return;
2283
2284 datasize = bfd_get_section_size (section);
2285 if (datasize == 0)
2286 return;
2287
2288 if (start_address == (bfd_vma) -1
2289 || start_address < section->vma)
2290 addr_offset = 0;
2291 else
2292 addr_offset = start_address - section->vma;
2293
2294 if (stop_address == (bfd_vma) -1)
2295 stop_offset = datasize / opb;
2296 else
2297 {
2298 if (stop_address < section->vma)
2299 stop_offset = 0;
2300 else
2301 stop_offset = stop_address - section->vma;
2302 if (stop_offset > datasize / opb)
2303 stop_offset = datasize / opb;
2304 }
2305
2306 if (addr_offset >= stop_offset)
2307 return;
2308
2309 /* Decide which set of relocs to use. Load them if necessary. */
2310 paux = (struct objdump_disasm_info *) pinfo->application_data;
2311 if (paux->dynrelbuf && dump_dynamic_reloc_info)
2312 {
2313 rel_pp = paux->dynrelbuf;
2314 rel_count = paux->dynrelcount;
2315 /* Dynamic reloc addresses are absolute, non-dynamic are section
2316 relative. REL_OFFSET specifies the reloc address corresponding
2317 to the start of this section. */
2318 rel_offset = section->vma;
2319 }
2320 else
2321 {
2322 rel_count = 0;
2323 rel_pp = NULL;
2324 rel_offset = 0;
2325
2326 if ((section->flags & SEC_RELOC) != 0
2327 && (dump_reloc_info || pinfo->disassembler_needs_relocs))
2328 {
2329 long relsize;
2330
2331 relsize = bfd_get_reloc_upper_bound (abfd, section);
2332 if (relsize < 0)
2333 bfd_fatal (bfd_get_filename (abfd));
2334
2335 if (relsize > 0)
2336 {
2337 rel_ppstart = rel_pp = (arelent **) xmalloc (relsize);
2338 rel_count = bfd_canonicalize_reloc (abfd, section, rel_pp, syms);
2339 if (rel_count < 0)
2340 bfd_fatal (bfd_get_filename (abfd));
2341
2342 /* Sort the relocs by address. */
2343 qsort (rel_pp, rel_count, sizeof (arelent *), compare_relocs);
2344 }
2345 }
2346 }
2347 rel_ppend = rel_pp + rel_count;
2348
2349 if (!bfd_malloc_and_get_section (abfd, section, &data))
2350 {
2351 non_fatal (_("Reading section %s failed because: %s"),
2352 section->name, bfd_errmsg (bfd_get_error ()));
2353 return;
2354 }
2355
2356 paux->sec = section;
2357 pinfo->buffer = data;
2358 pinfo->buffer_vma = section->vma;
2359 pinfo->buffer_length = datasize;
2360 pinfo->section = section;
2361
2362 /* Skip over the relocs belonging to addresses below the
2363 start address. */
2364 while (rel_pp < rel_ppend
2365 && (*rel_pp)->address < rel_offset + addr_offset)
2366 ++rel_pp;
2367
2368 printf (_("\nDisassembly of section %s:\n"), sanitize_string (section->name));
2369
2370 /* Find the nearest symbol forwards from our current position. */
2371 paux->require_sec = TRUE;
2372 sym = (asymbol *) find_symbol_for_address (section->vma + addr_offset,
2373 (struct disassemble_info *) inf,
2374 &place);
2375 paux->require_sec = FALSE;
2376
2377 /* PR 9774: If the target used signed addresses then we must make
2378 sure that we sign extend the value that we calculate for 'addr'
2379 in the loop below. */
2380 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
2381 && (bed = get_elf_backend_data (abfd)) != NULL
2382 && bed->sign_extend_vma)
2383 sign_adjust = (bfd_vma) 1 << (bed->s->arch_size - 1);
2384
2385 /* Disassemble a block of instructions up to the address associated with
2386 the symbol we have just found. Then print the symbol and find the
2387 next symbol on. Repeat until we have disassembled the entire section
2388 or we have reached the end of the address range we are interested in. */
2389 do_print = paux->symbol == NULL;
2390 loop_until = stop_offset_reached;
2391
2392 while (addr_offset < stop_offset)
2393 {
2394 bfd_vma addr;
2395 asymbol *nextsym;
2396 bfd_vma nextstop_offset;
2397 bfd_boolean insns;
2398
2399 addr = section->vma + addr_offset;
2400 addr = ((addr & ((sign_adjust << 1) - 1)) ^ sign_adjust) - sign_adjust;
2401
2402 if (sym != NULL && bfd_asymbol_value (sym) <= addr)
2403 {
2404 int x;
2405
2406 for (x = place;
2407 (x < sorted_symcount
2408 && (bfd_asymbol_value (sorted_syms[x]) <= addr));
2409 ++x)
2410 continue;
2411
2412 pinfo->symbols = sorted_syms + place;
2413 pinfo->num_symbols = x - place;
2414 pinfo->symtab_pos = place;
2415 }
2416 else
2417 {
2418 pinfo->symbols = NULL;
2419 pinfo->num_symbols = 0;
2420 pinfo->symtab_pos = -1;
2421 }
2422
2423 /* If we are only disassembling from a specific symbol,
2424 check to see if we should start or stop displaying. */
2425 if (sym && paux->symbol)
2426 {
2427 if (do_print)
2428 {
2429 /* See if we should stop printing. */
2430 switch (loop_until)
2431 {
2432 case function_sym:
2433 if (sym->flags & BSF_FUNCTION)
2434 do_print = FALSE;
2435 break;
2436
2437 case stop_offset_reached:
2438 /* Handled by the while loop. */
2439 break;
2440
2441 case next_sym:
2442 /* FIXME: There is an implicit assumption here
2443 that the name of sym is different from
2444 paux->symbol. */
2445 if (! bfd_is_local_label (abfd, sym))
2446 do_print = FALSE;
2447 break;
2448 }
2449 }
2450 else
2451 {
2452 const char * name = bfd_asymbol_name (sym);
2453 char * alloc = NULL;
2454
2455 if (do_demangle && name[0] != '\0')
2456 {
2457 /* Demangle the name. */
2458 alloc = bfd_demangle (abfd, name, demangle_flags);
2459 if (alloc != NULL)
2460 name = alloc;
2461 }
2462
2463 /* We are not currently printing. Check to see
2464 if the current symbol matches the requested symbol. */
2465 if (streq (name, paux->symbol))
2466 {
2467 do_print = TRUE;
2468
2469 if (sym->flags & BSF_FUNCTION)
2470 {
2471 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
2472 && ((elf_symbol_type *) sym)->internal_elf_sym.st_size > 0)
2473 {
2474 /* Sym is a function symbol with a size associated
2475 with it. Turn on automatic disassembly for the
2476 next VALUE bytes. */
2477 stop_offset = addr_offset
2478 + ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
2479 loop_until = stop_offset_reached;
2480 }
2481 else
2482 {
2483 /* Otherwise we need to tell the loop heuristic to
2484 loop until the next function symbol is encountered. */
2485 loop_until = function_sym;
2486 }
2487 }
2488 else
2489 {
2490 /* Otherwise loop until the next symbol is encountered. */
2491 loop_until = next_sym;
2492 }
2493 }
2494
2495 free (alloc);
2496 }
2497 }
2498
2499 if (! prefix_addresses && do_print)
2500 {
2501 pinfo->fprintf_func (pinfo->stream, "\n");
2502 objdump_print_addr_with_sym (abfd, section, sym, addr,
2503 pinfo, FALSE);
2504 pinfo->fprintf_func (pinfo->stream, ":\n");
2505 }
2506
2507 if (sym != NULL && bfd_asymbol_value (sym) > addr)
2508 nextsym = sym;
2509 else if (sym == NULL)
2510 nextsym = NULL;
2511 else
2512 {
2513 #define is_valid_next_sym(SYM) \
2514 (strcmp (bfd_section_name (abfd, (SYM)->section), bfd_section_name (abfd, section)) == 0 \
2515 && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
2516 && pinfo->symbol_is_valid (SYM, pinfo))
2517
2518 /* Search forward for the next appropriate symbol in
2519 SECTION. Note that all the symbols are sorted
2520 together into one big array, and that some sections
2521 may have overlapping addresses. */
2522 while (place < sorted_symcount
2523 && ! is_valid_next_sym (sorted_syms [place]))
2524 ++place;
2525
2526 if (place >= sorted_symcount)
2527 nextsym = NULL;
2528 else
2529 nextsym = sorted_syms[place];
2530 }
2531
2532 if (sym != NULL && bfd_asymbol_value (sym) > addr)
2533 nextstop_offset = bfd_asymbol_value (sym) - section->vma;
2534 else if (nextsym == NULL)
2535 nextstop_offset = stop_offset;
2536 else
2537 nextstop_offset = bfd_asymbol_value (nextsym) - section->vma;
2538
2539 if (nextstop_offset > stop_offset
2540 || nextstop_offset <= addr_offset)
2541 nextstop_offset = stop_offset;
2542
2543 /* If a symbol is explicitly marked as being an object
2544 rather than a function, just dump the bytes without
2545 disassembling them. */
2546 if (disassemble_all
2547 || sym == NULL
2548 || sym->section != section
2549 || bfd_asymbol_value (sym) > addr
2550 || ((sym->flags & BSF_OBJECT) == 0
2551 && (strstr (bfd_asymbol_name (sym), "gnu_compiled")
2552 == NULL)
2553 && (strstr (bfd_asymbol_name (sym), "gcc2_compiled")
2554 == NULL))
2555 || (sym->flags & BSF_FUNCTION) != 0)
2556 insns = TRUE;
2557 else
2558 insns = FALSE;
2559
2560 if (do_print)
2561 disassemble_bytes (pinfo, paux->disassemble_fn, insns, data,
2562 addr_offset, nextstop_offset,
2563 rel_offset, &rel_pp, rel_ppend);
2564
2565 addr_offset = nextstop_offset;
2566 sym = nextsym;
2567 }
2568
2569 free (data);
2570
2571 if (rel_ppstart != NULL)
2572 free (rel_ppstart);
2573 }
2574
2575 /* Disassemble the contents of an object file. */
2576
2577 static void
2578 disassemble_data (bfd *abfd)
2579 {
2580 struct disassemble_info disasm_info;
2581 struct objdump_disasm_info aux;
2582 long i;
2583
2584 print_files = NULL;
2585 prev_functionname = NULL;
2586 prev_line = -1;
2587 prev_discriminator = 0;
2588
2589 /* We make a copy of syms to sort. We don't want to sort syms
2590 because that will screw up the relocs. */
2591 sorted_symcount = symcount ? symcount : dynsymcount;
2592 sorted_syms = (asymbol **) xmalloc ((sorted_symcount + synthcount)
2593 * sizeof (asymbol *));
2594 memcpy (sorted_syms, symcount ? syms : dynsyms,
2595 sorted_symcount * sizeof (asymbol *));
2596
2597 sorted_symcount = remove_useless_symbols (sorted_syms, sorted_symcount);
2598
2599 for (i = 0; i < synthcount; ++i)
2600 {
2601 sorted_syms[sorted_symcount] = synthsyms + i;
2602 ++sorted_symcount;
2603 }
2604
2605 /* Sort the symbols into section and symbol order. */
2606 qsort (sorted_syms, sorted_symcount, sizeof (asymbol *), compare_symbols);
2607
2608 init_disassemble_info (&disasm_info, stdout, (fprintf_ftype) fprintf);
2609
2610 disasm_info.application_data = (void *) &aux;
2611 aux.abfd = abfd;
2612 aux.require_sec = FALSE;
2613 aux.dynrelbuf = NULL;
2614 aux.dynrelcount = 0;
2615 aux.reloc = NULL;
2616 aux.symbol = disasm_sym;
2617
2618 disasm_info.print_address_func = objdump_print_address;
2619 disasm_info.symbol_at_address_func = objdump_symbol_at_address;
2620
2621 if (machine != NULL)
2622 {
2623 const bfd_arch_info_type *inf = bfd_scan_arch (machine);
2624
2625 if (inf == NULL)
2626 fatal (_("can't use supplied machine %s"), machine);
2627
2628 abfd->arch_info = inf;
2629 }
2630
2631 if (endian != BFD_ENDIAN_UNKNOWN)
2632 {
2633 struct bfd_target *xvec;
2634
2635 xvec = (struct bfd_target *) xmalloc (sizeof (struct bfd_target));
2636 memcpy (xvec, abfd->xvec, sizeof (struct bfd_target));
2637 xvec->byteorder = endian;
2638 abfd->xvec = xvec;
2639 }
2640
2641 /* Use libopcodes to locate a suitable disassembler. */
2642 aux.disassemble_fn = disassembler (bfd_get_arch (abfd),
2643 bfd_big_endian (abfd),
2644 bfd_get_mach (abfd), abfd);
2645 if (!aux.disassemble_fn)
2646 {
2647 non_fatal (_("can't disassemble for architecture %s\n"),
2648 bfd_printable_arch_mach (bfd_get_arch (abfd), 0));
2649 exit_status = 1;
2650 return;
2651 }
2652
2653 disasm_info.flavour = bfd_get_flavour (abfd);
2654 disasm_info.arch = bfd_get_arch (abfd);
2655 disasm_info.mach = bfd_get_mach (abfd);
2656 disasm_info.disassembler_options = disassembler_options;
2657 disasm_info.octets_per_byte = bfd_octets_per_byte (abfd);
2658 disasm_info.skip_zeroes = DEFAULT_SKIP_ZEROES;
2659 disasm_info.skip_zeroes_at_end = DEFAULT_SKIP_ZEROES_AT_END;
2660 disasm_info.disassembler_needs_relocs = FALSE;
2661
2662 if (bfd_big_endian (abfd))
2663 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_BIG;
2664 else if (bfd_little_endian (abfd))
2665 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_LITTLE;
2666 else
2667 /* ??? Aborting here seems too drastic. We could default to big or little
2668 instead. */
2669 disasm_info.endian = BFD_ENDIAN_UNKNOWN;
2670
2671 /* Allow the target to customize the info structure. */
2672 disassemble_init_for_target (& disasm_info);
2673
2674 /* Pre-load the dynamic relocs as we may need them during the disassembly. */
2675 {
2676 long relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2677
2678 if (relsize < 0 && dump_dynamic_reloc_info)
2679 bfd_fatal (bfd_get_filename (abfd));
2680
2681 if (relsize > 0)
2682 {
2683 aux.dynrelbuf = (arelent **) xmalloc (relsize);
2684 aux.dynrelcount = bfd_canonicalize_dynamic_reloc (abfd,
2685 aux.dynrelbuf,
2686 dynsyms);
2687 if (aux.dynrelcount < 0)
2688 bfd_fatal (bfd_get_filename (abfd));
2689
2690 /* Sort the relocs by address. */
2691 qsort (aux.dynrelbuf, aux.dynrelcount, sizeof (arelent *),
2692 compare_relocs);
2693 }
2694 }
2695 disasm_info.symtab = sorted_syms;
2696 disasm_info.symtab_size = sorted_symcount;
2697
2698 bfd_map_over_sections (abfd, disassemble_section, & disasm_info);
2699
2700 if (aux.dynrelbuf != NULL)
2701 free (aux.dynrelbuf);
2702 free (sorted_syms);
2703 }
2704 \f
2705 static bfd_boolean
2706 load_specific_debug_section (enum dwarf_section_display_enum debug,
2707 asection *sec, void *file)
2708 {
2709 struct dwarf_section *section = &debug_displays [debug].section;
2710 bfd *abfd = (bfd *) file;
2711 bfd_byte *contents;
2712 bfd_size_type amt;
2713 size_t alloced;
2714
2715 if (section->start != NULL)
2716 {
2717 /* If it is already loaded, do nothing. */
2718 if (streq (section->filename, bfd_get_filename (abfd)))
2719 return TRUE;
2720 free (section->start);
2721 }
2722
2723 section->filename = bfd_get_filename (abfd);
2724 section->reloc_info = NULL;
2725 section->num_relocs = 0;
2726 section->address = bfd_get_section_vma (abfd, sec);
2727 section->user_data = sec;
2728 section->size = bfd_get_section_size (sec);
2729 /* PR 24360: On 32-bit hosts sizeof (size_t) < sizeof (bfd_size_type). */
2730 alloced = amt = section->size + 1;
2731 if (alloced != amt || alloced == 0)
2732 {
2733 section->start = NULL;
2734 free_debug_section (debug);
2735 printf (_("\nSection '%s' has an invalid size: %#llx.\n"),
2736 sanitize_string (section->name),
2737 (unsigned long long) section->size);
2738 return FALSE;
2739 }
2740 section->start = contents = malloc (alloced);
2741 if (section->start == NULL
2742 || !bfd_get_full_section_contents (abfd, sec, &contents))
2743 {
2744 free_debug_section (debug);
2745 printf (_("\nCan't get contents for section '%s'.\n"),
2746 sanitize_string (section->name));
2747 return FALSE;
2748 }
2749 /* Ensure any string section has a terminating NUL. */
2750 section->start[section->size] = 0;
2751
2752 if (is_relocatable && debug_displays [debug].relocate)
2753 {
2754 long reloc_size;
2755 bfd_boolean ret;
2756
2757 bfd_cache_section_contents (sec, section->start);
2758
2759 ret = bfd_simple_get_relocated_section_contents (abfd,
2760 sec,
2761 section->start,
2762 syms) != NULL;
2763
2764 if (! ret)
2765 {
2766 free_debug_section (debug);
2767 printf (_("\nCan't get contents for section '%s'.\n"),
2768 sanitize_string (section->name));
2769 return FALSE;
2770 }
2771
2772 reloc_size = bfd_get_reloc_upper_bound (abfd, sec);
2773 if (reloc_size > 0)
2774 {
2775 unsigned long reloc_count;
2776 arelent **relocs;
2777
2778 relocs = (arelent **) xmalloc (reloc_size);
2779
2780 reloc_count = bfd_canonicalize_reloc (abfd, sec, relocs, NULL);
2781 if (reloc_count == 0)
2782 free (relocs);
2783 else
2784 {
2785 section->reloc_info = relocs;
2786 section->num_relocs = reloc_count;
2787 }
2788 }
2789 }
2790
2791 return TRUE;
2792 }
2793
2794 bfd_boolean
2795 reloc_at (struct dwarf_section * dsec, dwarf_vma offset)
2796 {
2797 arelent ** relocs;
2798 arelent * rp;
2799
2800 if (dsec == NULL || dsec->reloc_info == NULL)
2801 return FALSE;
2802
2803 relocs = (arelent **) dsec->reloc_info;
2804
2805 for (; (rp = * relocs) != NULL; ++ relocs)
2806 if (rp->address == offset)
2807 return TRUE;
2808
2809 return FALSE;
2810 }
2811
2812 bfd_boolean
2813 load_debug_section (enum dwarf_section_display_enum debug, void *file)
2814 {
2815 struct dwarf_section *section = &debug_displays [debug].section;
2816 bfd *abfd = (bfd *) file;
2817 asection *sec;
2818
2819 /* If it is already loaded, do nothing. */
2820 if (section->start != NULL)
2821 {
2822 if (streq (section->filename, bfd_get_filename (abfd)))
2823 return TRUE;
2824 }
2825
2826 /* Locate the debug section. */
2827 sec = bfd_get_section_by_name (abfd, section->uncompressed_name);
2828 if (sec != NULL)
2829 section->name = section->uncompressed_name;
2830 else
2831 {
2832 sec = bfd_get_section_by_name (abfd, section->compressed_name);
2833 if (sec != NULL)
2834 section->name = section->compressed_name;
2835 }
2836 if (sec == NULL)
2837 return FALSE;
2838
2839 return load_specific_debug_section (debug, sec, file);
2840 }
2841
2842 void
2843 free_debug_section (enum dwarf_section_display_enum debug)
2844 {
2845 struct dwarf_section *section = &debug_displays [debug].section;
2846
2847 if (section->start == NULL)
2848 return;
2849
2850 /* PR 17512: file: 0f67f69d. */
2851 if (section->user_data != NULL)
2852 {
2853 asection * sec = (asection *) section->user_data;
2854
2855 /* If we are freeing contents that are also pointed to by the BFD
2856 library's section structure then make sure to update those pointers
2857 too. Otherwise, the next time we try to load data for this section
2858 we can end up using a stale pointer. */
2859 if (section->start == sec->contents)
2860 {
2861 sec->contents = NULL;
2862 sec->flags &= ~ SEC_IN_MEMORY;
2863 sec->compress_status = COMPRESS_SECTION_NONE;
2864 }
2865 }
2866
2867 free ((char *) section->start);
2868 section->start = NULL;
2869 section->address = 0;
2870 section->size = 0;
2871 }
2872
2873 void
2874 close_debug_file (void * file)
2875 {
2876 bfd * abfd = (bfd *) file;
2877
2878 bfd_close (abfd);
2879 }
2880
2881 void *
2882 open_debug_file (const char * pathname)
2883 {
2884 bfd * data;
2885
2886 data = bfd_openr (pathname, NULL);
2887 if (data == NULL)
2888 return NULL;
2889
2890 if (! bfd_check_format (data, bfd_object))
2891 return NULL;
2892
2893 return data;
2894 }
2895
2896 static void
2897 dump_dwarf_section (bfd *abfd, asection *section,
2898 void *arg ATTRIBUTE_UNUSED)
2899 {
2900 const char *name = bfd_get_section_name (abfd, section);
2901 const char *match;
2902 int i;
2903
2904 if (CONST_STRNEQ (name, ".gnu.linkonce.wi."))
2905 match = ".debug_info";
2906 else
2907 match = name;
2908
2909 for (i = 0; i < max; i++)
2910 if ((strcmp (debug_displays [i].section.uncompressed_name, match) == 0
2911 || strcmp (debug_displays [i].section.compressed_name, match) == 0)
2912 && debug_displays [i].enabled != NULL
2913 && *debug_displays [i].enabled)
2914 {
2915 struct dwarf_section *sec = &debug_displays [i].section;
2916
2917 if (strcmp (sec->uncompressed_name, match) == 0)
2918 sec->name = sec->uncompressed_name;
2919 else
2920 sec->name = sec->compressed_name;
2921 if (load_specific_debug_section ((enum dwarf_section_display_enum) i,
2922 section, abfd))
2923 {
2924 debug_displays [i].display (sec, abfd);
2925
2926 if (i != info && i != abbrev)
2927 free_debug_section ((enum dwarf_section_display_enum) i);
2928 }
2929 break;
2930 }
2931 }
2932
2933 /* Dump the dwarf debugging information. */
2934
2935 static void
2936 dump_dwarf (bfd *abfd)
2937 {
2938 /* The byte_get pointer should have been set at the start of dump_bfd(). */
2939 if (byte_get == NULL)
2940 {
2941 warn (_("File %s does not contain any dwarf debug information\n"),
2942 bfd_get_filename (abfd));
2943 return;
2944 }
2945
2946 is_relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2947
2948 eh_addr_size = bfd_arch_bits_per_address (abfd) / 8;
2949
2950 switch (bfd_get_arch (abfd))
2951 {
2952 case bfd_arch_i386:
2953 switch (bfd_get_mach (abfd))
2954 {
2955 case bfd_mach_x86_64:
2956 case bfd_mach_x86_64_intel_syntax:
2957 case bfd_mach_x86_64_nacl:
2958 case bfd_mach_x64_32:
2959 case bfd_mach_x64_32_intel_syntax:
2960 case bfd_mach_x64_32_nacl:
2961 init_dwarf_regnames_x86_64 ();
2962 break;
2963
2964 default:
2965 init_dwarf_regnames_i386 ();
2966 break;
2967 }
2968 break;
2969
2970 case bfd_arch_iamcu:
2971 init_dwarf_regnames_iamcu ();
2972 break;
2973
2974 case bfd_arch_aarch64:
2975 init_dwarf_regnames_aarch64();
2976 break;
2977
2978 case bfd_arch_s390:
2979 init_dwarf_regnames_s390 ();
2980 break;
2981
2982 case bfd_arch_riscv:
2983 init_dwarf_regnames_riscv ();
2984 break;
2985
2986 case bfd_arch_s12z:
2987 /* S12Z has a 24 bit address space. But the only known
2988 producer of dwarf_info encodes addresses into 32 bits. */
2989 eh_addr_size = 4;
2990 break;
2991
2992 default:
2993 break;
2994 }
2995
2996 bfd_map_over_sections (abfd, dump_dwarf_section, NULL);
2997 }
2998 \f
2999 /* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
3000 it. Return NULL on failure. */
3001
3002 static bfd_byte *
3003 read_section_stabs (bfd *abfd, const char *sect_name, bfd_size_type *size_ptr,
3004 bfd_size_type *entsize_ptr)
3005 {
3006 asection *stabsect;
3007 bfd_byte *contents;
3008
3009 stabsect = bfd_get_section_by_name (abfd, sect_name);
3010 if (stabsect == NULL)
3011 {
3012 printf (_("No %s section present\n\n"),
3013 sanitize_string (sect_name));
3014 return FALSE;
3015 }
3016
3017 if (!bfd_malloc_and_get_section (abfd, stabsect, &contents))
3018 {
3019 non_fatal (_("reading %s section of %s failed: %s"),
3020 sect_name, bfd_get_filename (abfd),
3021 bfd_errmsg (bfd_get_error ()));
3022 exit_status = 1;
3023 free (contents);
3024 return NULL;
3025 }
3026
3027 *size_ptr = bfd_section_size (abfd, stabsect);
3028 if (entsize_ptr)
3029 *entsize_ptr = stabsect->entsize;
3030
3031 return contents;
3032 }
3033
3034 /* Stabs entries use a 12 byte format:
3035 4 byte string table index
3036 1 byte stab type
3037 1 byte stab other field
3038 2 byte stab desc field
3039 4 byte stab value
3040 FIXME: This will have to change for a 64 bit object format. */
3041
3042 #define STRDXOFF (0)
3043 #define TYPEOFF (4)
3044 #define OTHEROFF (5)
3045 #define DESCOFF (6)
3046 #define VALOFF (8)
3047 #define STABSIZE (12)
3048
3049 /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
3050 using string table section STRSECT_NAME (in `strtab'). */
3051
3052 static void
3053 print_section_stabs (bfd *abfd,
3054 const char *stabsect_name,
3055 unsigned *string_offset_ptr)
3056 {
3057 int i;
3058 unsigned file_string_table_offset = 0;
3059 unsigned next_file_string_table_offset = *string_offset_ptr;
3060 bfd_byte *stabp, *stabs_end;
3061
3062 stabp = stabs;
3063 stabs_end = stabp + stab_size;
3064
3065 printf (_("Contents of %s section:\n\n"), sanitize_string (stabsect_name));
3066 printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
3067
3068 /* Loop through all symbols and print them.
3069
3070 We start the index at -1 because there is a dummy symbol on
3071 the front of stabs-in-{coff,elf} sections that supplies sizes. */
3072 for (i = -1; stabp <= stabs_end - STABSIZE; stabp += STABSIZE, i++)
3073 {
3074 const char *name;
3075 unsigned long strx;
3076 unsigned char type, other;
3077 unsigned short desc;
3078 bfd_vma value;
3079
3080 strx = bfd_h_get_32 (abfd, stabp + STRDXOFF);
3081 type = bfd_h_get_8 (abfd, stabp + TYPEOFF);
3082 other = bfd_h_get_8 (abfd, stabp + OTHEROFF);
3083 desc = bfd_h_get_16 (abfd, stabp + DESCOFF);
3084 value = bfd_h_get_32 (abfd, stabp + VALOFF);
3085
3086 printf ("\n%-6d ", i);
3087 /* Either print the stab name, or, if unnamed, print its number
3088 again (makes consistent formatting for tools like awk). */
3089 name = bfd_get_stab_name (type);
3090 if (name != NULL)
3091 printf ("%-6s", sanitize_string (name));
3092 else if (type == N_UNDF)
3093 printf ("HdrSym");
3094 else
3095 printf ("%-6d", type);
3096 printf (" %-6d %-6d ", other, desc);
3097 bfd_printf_vma (abfd, value);
3098 printf (" %-6lu", strx);
3099
3100 /* Symbols with type == 0 (N_UNDF) specify the length of the
3101 string table associated with this file. We use that info
3102 to know how to relocate the *next* file's string table indices. */
3103 if (type == N_UNDF)
3104 {
3105 file_string_table_offset = next_file_string_table_offset;
3106 next_file_string_table_offset += value;
3107 }
3108 else
3109 {
3110 bfd_size_type amt = strx + file_string_table_offset;
3111
3112 /* Using the (possibly updated) string table offset, print the
3113 string (if any) associated with this symbol. */
3114 if (amt < stabstr_size)
3115 /* PR 17512: file: 079-79389-0.001:0.1.
3116 FIXME: May need to sanitize this string before displaying. */
3117 printf (" %.*s", (int)(stabstr_size - amt), strtab + amt);
3118 else
3119 printf (" *");
3120 }
3121 }
3122 printf ("\n\n");
3123 *string_offset_ptr = next_file_string_table_offset;
3124 }
3125
3126 typedef struct
3127 {
3128 const char * section_name;
3129 const char * string_section_name;
3130 unsigned string_offset;
3131 }
3132 stab_section_names;
3133
3134 static void
3135 find_stabs_section (bfd *abfd, asection *section, void *names)
3136 {
3137 int len;
3138 stab_section_names * sought = (stab_section_names *) names;
3139
3140 /* Check for section names for which stabsect_name is a prefix, to
3141 handle .stab.N, etc. */
3142 len = strlen (sought->section_name);
3143
3144 /* If the prefix matches, and the files section name ends with a
3145 nul or a digit, then we match. I.e., we want either an exact
3146 match or a section followed by a number. */
3147 if (strncmp (sought->section_name, section->name, len) == 0
3148 && (section->name[len] == 0
3149 || (section->name[len] == '.' && ISDIGIT (section->name[len + 1]))))
3150 {
3151 if (strtab == NULL)
3152 strtab = read_section_stabs (abfd, sought->string_section_name,
3153 &stabstr_size, NULL);
3154
3155 if (strtab)
3156 {
3157 stabs = read_section_stabs (abfd, section->name, &stab_size, NULL);
3158 if (stabs)
3159 print_section_stabs (abfd, section->name, &sought->string_offset);
3160 }
3161 }
3162 }
3163
3164 static void
3165 dump_stabs_section (bfd *abfd, char *stabsect_name, char *strsect_name)
3166 {
3167 stab_section_names s;
3168
3169 s.section_name = stabsect_name;
3170 s.string_section_name = strsect_name;
3171 s.string_offset = 0;
3172
3173 bfd_map_over_sections (abfd, find_stabs_section, & s);
3174
3175 free (strtab);
3176 strtab = NULL;
3177 }
3178
3179 /* Dump the any sections containing stabs debugging information. */
3180
3181 static void
3182 dump_stabs (bfd *abfd)
3183 {
3184 dump_stabs_section (abfd, ".stab", ".stabstr");
3185 dump_stabs_section (abfd, ".stab.excl", ".stab.exclstr");
3186 dump_stabs_section (abfd, ".stab.index", ".stab.indexstr");
3187
3188 /* For Darwin. */
3189 dump_stabs_section (abfd, "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr");
3190
3191 dump_stabs_section (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
3192 }
3193 \f
3194 static void
3195 dump_bfd_header (bfd *abfd)
3196 {
3197 char *comma = "";
3198
3199 printf (_("architecture: %s, "),
3200 bfd_printable_arch_mach (bfd_get_arch (abfd),
3201 bfd_get_mach (abfd)));
3202 printf (_("flags 0x%08x:\n"), abfd->flags & ~BFD_FLAGS_FOR_BFD_USE_MASK);
3203
3204 #define PF(x, y) if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
3205 PF (HAS_RELOC, "HAS_RELOC");
3206 PF (EXEC_P, "EXEC_P");
3207 PF (HAS_LINENO, "HAS_LINENO");
3208 PF (HAS_DEBUG, "HAS_DEBUG");
3209 PF (HAS_SYMS, "HAS_SYMS");
3210 PF (HAS_LOCALS, "HAS_LOCALS");
3211 PF (DYNAMIC, "DYNAMIC");
3212 PF (WP_TEXT, "WP_TEXT");
3213 PF (D_PAGED, "D_PAGED");
3214 PF (BFD_IS_RELAXABLE, "BFD_IS_RELAXABLE");
3215 printf (_("\nstart address 0x"));
3216 bfd_printf_vma (abfd, abfd->start_address);
3217 printf ("\n");
3218 }
3219 \f
3220
3221 /* Formatting callback function passed to ctf_dump. Returns either the pointer
3222 it is passed, or a pointer to newly-allocated storage, in which case
3223 dump_ctf() will free it when it no longer needs it. */
3224
3225 static char *
3226 dump_ctf_indent_lines (ctf_sect_names_t sect ATTRIBUTE_UNUSED,
3227 char *s, void *arg)
3228 {
3229 const char *blanks = arg;
3230 char *new_s;
3231
3232 if (asprintf (&new_s, "%s%s", blanks, s) < 0)
3233 return s;
3234 return new_s;
3235 }
3236
3237 /* Make a ctfsect suitable for ctf_bfdopen_ctfsect(). */
3238 static ctf_sect_t
3239 make_ctfsect (const char *name, bfd_byte *data,
3240 bfd_size_type size)
3241 {
3242 ctf_sect_t ctfsect;
3243
3244 ctfsect.cts_name = name;
3245 ctfsect.cts_entsize = 1;
3246 ctfsect.cts_size = size;
3247 ctfsect.cts_data = data;
3248
3249 return ctfsect;
3250 }
3251
3252 /* Dump one CTF archive member. */
3253
3254 static int
3255 dump_ctf_archive_member (ctf_file_t *ctf, const char *name, void *arg)
3256 {
3257 ctf_file_t *parent = (ctf_file_t *) arg;
3258 const char *things[] = {"Labels", "Data objects", "Function objects",
3259 "Variables", "Types", "Strings", ""};
3260 const char **thing;
3261 size_t i;
3262
3263 /* Only print out the name of non-default-named archive members.
3264 The name .ctf appears everywhere, even for things that aren't
3265 really archives, so printing it out is liable to be confusing. */
3266 if (strcmp (name, ".ctf") != 0)
3267 printf (_("\nCTF archive member: %s:\n"), sanitize_string (name));
3268
3269 ctf_import (ctf, parent);
3270 for (i = 1, thing = things; *thing[0]; thing++, i++)
3271 {
3272 ctf_dump_state_t *s = NULL;
3273 char *item;
3274
3275 printf ("\n %s:\n", *thing);
3276 while ((item = ctf_dump (ctf, &s, i, dump_ctf_indent_lines,
3277 (void *) " ")) != NULL)
3278 {
3279 printf ("%s\n", item);
3280 free (item);
3281 }
3282
3283 if (ctf_errno (ctf))
3284 {
3285 non_fatal (_("Iteration failed: %s, %s\n"), *thing,
3286 ctf_errmsg (ctf_errno (ctf)));
3287 break;
3288 }
3289 }
3290 return 0;
3291 }
3292
3293 /* Dump the CTF debugging information. */
3294
3295 static void
3296 dump_ctf (bfd *abfd, const char *sect_name, const char *parent_name)
3297 {
3298 ctf_archive_t *ctfa, *parenta = NULL;
3299 bfd_byte *ctfdata, *parentdata = NULL;
3300 bfd_size_type ctfsize, parentsize;
3301 ctf_sect_t ctfsect;
3302 ctf_file_t *parent = NULL;
3303 int err;
3304
3305 if ((ctfdata = read_section_stabs (abfd, sect_name, &ctfsize, NULL)) == NULL)
3306 bfd_fatal (bfd_get_filename (abfd));
3307
3308 if (parent_name
3309 && (parentdata = read_section_stabs (abfd, parent_name, &parentsize,
3310 NULL)) == NULL)
3311 bfd_fatal (bfd_get_filename (abfd));
3312
3313 /* Load the CTF file and dump it. */
3314
3315 ctfsect = make_ctfsect (sect_name, ctfdata, ctfsize);
3316 if ((ctfa = ctf_bfdopen_ctfsect (abfd, &ctfsect, &err)) == NULL)
3317 {
3318 non_fatal (_("CTF open failure: %s\n"), ctf_errmsg (err));
3319 bfd_fatal (bfd_get_filename (abfd));
3320 }
3321
3322 if (parentdata)
3323 {
3324 ctfsect = make_ctfsect (parent_name, parentdata, parentsize);
3325 if ((parenta = ctf_bfdopen_ctfsect (abfd, &ctfsect, &err)) == NULL)
3326 {
3327 non_fatal (_("CTF open failure: %s\n"), ctf_errmsg (err));
3328 bfd_fatal (bfd_get_filename (abfd));
3329 }
3330
3331 /* Assume that the applicable parent archive member is the default one.
3332 (This is what all known implementations are expected to do, if they
3333 put CTFs and their parents in archives together.) */
3334 if ((parent = ctf_arc_open_by_name (parenta, NULL, &err)) == NULL)
3335 {
3336 non_fatal (_("CTF open failure: %s\n"), ctf_errmsg (err));
3337 bfd_fatal (bfd_get_filename (abfd));
3338 }
3339 }
3340
3341 printf (_("Contents of CTF section %s:\n"), sanitize_string (sect_name));
3342
3343 ctf_archive_iter (ctfa, dump_ctf_archive_member, parent);
3344 ctf_file_close (parent);
3345 ctf_close (ctfa);
3346 ctf_close (parenta);
3347 free (parentdata);
3348 free (ctfdata);
3349 }
3350
3351 \f
3352 static void
3353 dump_bfd_private_header (bfd *abfd)
3354 {
3355 if (!bfd_print_private_bfd_data (abfd, stdout))
3356 non_fatal (_("warning: private headers incomplete: %s"),
3357 bfd_errmsg (bfd_get_error ()));
3358 }
3359
3360 static void
3361 dump_target_specific (bfd *abfd)
3362 {
3363 const struct objdump_private_desc * const *desc;
3364 struct objdump_private_option *opt;
3365 char *e, *b;
3366
3367 /* Find the desc. */
3368 for (desc = objdump_private_vectors; *desc != NULL; desc++)
3369 if ((*desc)->filter (abfd))
3370 break;
3371
3372 if (*desc == NULL)
3373 {
3374 non_fatal (_("option -P/--private not supported by this file"));
3375 return;
3376 }
3377
3378 /* Clear all options. */
3379 for (opt = (*desc)->options; opt->name; opt++)
3380 opt->selected = FALSE;
3381
3382 /* Decode options. */
3383 b = dump_private_options;
3384 do
3385 {
3386 e = strchr (b, ',');
3387
3388 if (e)
3389 *e = 0;
3390
3391 for (opt = (*desc)->options; opt->name; opt++)
3392 if (strcmp (opt->name, b) == 0)
3393 {
3394 opt->selected = TRUE;
3395 break;
3396 }
3397 if (opt->name == NULL)
3398 non_fatal (_("target specific dump '%s' not supported"), b);
3399
3400 if (e)
3401 {
3402 *e = ',';
3403 b = e + 1;
3404 }
3405 }
3406 while (e != NULL);
3407
3408 /* Dump. */
3409 (*desc)->dump (abfd);
3410 }
3411 \f
3412 /* Display a section in hexadecimal format with associated characters.
3413 Each line prefixed by the zero padded address. */
3414
3415 static void
3416 dump_section (bfd *abfd, asection *section, void *dummy ATTRIBUTE_UNUSED)
3417 {
3418 bfd_byte *data = NULL;
3419 bfd_size_type datasize;
3420 bfd_vma addr_offset;
3421 bfd_vma start_offset;
3422 bfd_vma stop_offset;
3423 unsigned int opb = bfd_octets_per_byte (abfd);
3424 /* Bytes per line. */
3425 const int onaline = 16;
3426 char buf[64];
3427 int count;
3428 int width;
3429
3430 if ((section->flags & SEC_HAS_CONTENTS) == 0)
3431 return;
3432
3433 if (! process_section_p (section))
3434 return;
3435
3436 if ((datasize = bfd_section_size (abfd, section)) == 0)
3437 return;
3438
3439 /* Compute the address range to display. */
3440 if (start_address == (bfd_vma) -1
3441 || start_address < section->vma)
3442 start_offset = 0;
3443 else
3444 start_offset = start_address - section->vma;
3445
3446 if (stop_address == (bfd_vma) -1)
3447 stop_offset = datasize / opb;
3448 else
3449 {
3450 if (stop_address < section->vma)
3451 stop_offset = 0;
3452 else
3453 stop_offset = stop_address - section->vma;
3454
3455 if (stop_offset > datasize / opb)
3456 stop_offset = datasize / opb;
3457 }
3458
3459 if (start_offset >= stop_offset)
3460 return;
3461
3462 printf (_("Contents of section %s:"), sanitize_string (section->name));
3463 if (display_file_offsets)
3464 printf (_(" (Starting at file offset: 0x%lx)"),
3465 (unsigned long) (section->filepos + start_offset));
3466 printf ("\n");
3467
3468 if (!bfd_get_full_section_contents (abfd, section, &data))
3469 {
3470 non_fatal (_("Reading section %s failed because: %s"),
3471 section->name, bfd_errmsg (bfd_get_error ()));
3472 return;
3473 }
3474
3475 width = 4;
3476
3477 bfd_sprintf_vma (abfd, buf, start_offset + section->vma);
3478 if (strlen (buf) >= sizeof (buf))
3479 abort ();
3480
3481 count = 0;
3482 while (buf[count] == '0' && buf[count+1] != '\0')
3483 count++;
3484 count = strlen (buf) - count;
3485 if (count > width)
3486 width = count;
3487
3488 bfd_sprintf_vma (abfd, buf, stop_offset + section->vma - 1);
3489 if (strlen (buf) >= sizeof (buf))
3490 abort ();
3491
3492 count = 0;
3493 while (buf[count] == '0' && buf[count+1] != '\0')
3494 count++;
3495 count = strlen (buf) - count;
3496 if (count > width)
3497 width = count;
3498
3499 for (addr_offset = start_offset;
3500 addr_offset < stop_offset; addr_offset += onaline / opb)
3501 {
3502 bfd_size_type j;
3503
3504 bfd_sprintf_vma (abfd, buf, (addr_offset + section->vma));
3505 count = strlen (buf);
3506 if ((size_t) count >= sizeof (buf))
3507 abort ();
3508
3509 putchar (' ');
3510 while (count < width)
3511 {
3512 putchar ('0');
3513 count++;
3514 }
3515 fputs (buf + count - width, stdout);
3516 putchar (' ');
3517
3518 for (j = addr_offset * opb;
3519 j < addr_offset * opb + onaline; j++)
3520 {
3521 if (j < stop_offset * opb)
3522 printf ("%02x", (unsigned) (data[j]));
3523 else
3524 printf (" ");
3525 if ((j & 3) == 3)
3526 printf (" ");
3527 }
3528
3529 printf (" ");
3530 for (j = addr_offset * opb;
3531 j < addr_offset * opb + onaline; j++)
3532 {
3533 if (j >= stop_offset * opb)
3534 printf (" ");
3535 else
3536 printf ("%c", ISPRINT (data[j]) ? data[j] : '.');
3537 }
3538 putchar ('\n');
3539 }
3540 free (data);
3541 }
3542
3543 /* Actually display the various requested regions. */
3544
3545 static void
3546 dump_data (bfd *abfd)
3547 {
3548 bfd_map_over_sections (abfd, dump_section, NULL);
3549 }
3550
3551 /* Should perhaps share code and display with nm? */
3552
3553 static void
3554 dump_symbols (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean dynamic)
3555 {
3556 asymbol **current;
3557 long max_count;
3558 long count;
3559
3560 if (dynamic)
3561 {
3562 current = dynsyms;
3563 max_count = dynsymcount;
3564 printf ("DYNAMIC SYMBOL TABLE:\n");
3565 }
3566 else
3567 {
3568 current = syms;
3569 max_count = symcount;
3570 printf ("SYMBOL TABLE:\n");
3571 }
3572
3573 if (max_count == 0)
3574 printf (_("no symbols\n"));
3575
3576 for (count = 0; count < max_count; count++)
3577 {
3578 bfd *cur_bfd;
3579
3580 if (*current == NULL)
3581 printf (_("no information for symbol number %ld\n"), count);
3582
3583 else if ((cur_bfd = bfd_asymbol_bfd (*current)) == NULL)
3584 printf (_("could not determine the type of symbol number %ld\n"),
3585 count);
3586
3587 else if (process_section_p ((* current)->section)
3588 && (dump_special_syms
3589 || !bfd_is_target_special_symbol (cur_bfd, *current)))
3590 {
3591 const char *name = (*current)->name;
3592
3593 if (do_demangle && name != NULL && *name != '\0')
3594 {
3595 char *alloc;
3596
3597 /* If we want to demangle the name, we demangle it
3598 here, and temporarily clobber it while calling
3599 bfd_print_symbol. FIXME: This is a gross hack. */
3600 alloc = bfd_demangle (cur_bfd, name, demangle_flags);
3601 if (alloc != NULL)
3602 (*current)->name = alloc;
3603 bfd_print_symbol (cur_bfd, stdout, *current,
3604 bfd_print_symbol_all);
3605 if (alloc != NULL)
3606 {
3607 (*current)->name = name;
3608 free (alloc);
3609 }
3610 }
3611 else
3612 bfd_print_symbol (cur_bfd, stdout, *current,
3613 bfd_print_symbol_all);
3614 printf ("\n");
3615 }
3616
3617 current++;
3618 }
3619 printf ("\n\n");
3620 }
3621 \f
3622 static void
3623 dump_reloc_set (bfd *abfd, asection *sec, arelent **relpp, long relcount)
3624 {
3625 arelent **p;
3626 char *last_filename, *last_functionname;
3627 unsigned int last_line;
3628 unsigned int last_discriminator;
3629
3630 /* Get column headers lined up reasonably. */
3631 {
3632 static int width;
3633
3634 if (width == 0)
3635 {
3636 char buf[30];
3637
3638 bfd_sprintf_vma (abfd, buf, (bfd_vma) -1);
3639 width = strlen (buf) - 7;
3640 }
3641 printf ("OFFSET %*s TYPE %*s VALUE \n", width, "", 12, "");
3642 }
3643
3644 last_filename = NULL;
3645 last_functionname = NULL;
3646 last_line = 0;
3647 last_discriminator = 0;
3648
3649 for (p = relpp; relcount && *p != NULL; p++, relcount--)
3650 {
3651 arelent *q = *p;
3652 const char *filename, *functionname;
3653 unsigned int linenumber;
3654 unsigned int discriminator;
3655 const char *sym_name;
3656 const char *section_name;
3657 bfd_vma addend2 = 0;
3658
3659 if (start_address != (bfd_vma) -1
3660 && q->address < start_address)
3661 continue;
3662 if (stop_address != (bfd_vma) -1
3663 && q->address > stop_address)
3664 continue;
3665
3666 if (with_line_numbers
3667 && sec != NULL
3668 && bfd_find_nearest_line_discriminator (abfd, sec, syms, q->address,
3669 &filename, &functionname,
3670 &linenumber, &discriminator))
3671 {
3672 if (functionname != NULL
3673 && (last_functionname == NULL
3674 || strcmp (functionname, last_functionname) != 0))
3675 {
3676 printf ("%s():\n", sanitize_string (functionname));
3677 if (last_functionname != NULL)
3678 free (last_functionname);
3679 last_functionname = xstrdup (functionname);
3680 }
3681
3682 if (linenumber > 0
3683 && (linenumber != last_line
3684 || (filename != NULL
3685 && last_filename != NULL
3686 && filename_cmp (filename, last_filename) != 0)
3687 || (discriminator != last_discriminator)))
3688 {
3689 if (discriminator > 0)
3690 printf ("%s:%u\n", filename == NULL ? "???" :
3691 sanitize_string (filename), linenumber);
3692 else
3693 printf ("%s:%u (discriminator %u)\n",
3694 filename == NULL ? "???" : sanitize_string (filename),
3695 linenumber, discriminator);
3696 last_line = linenumber;
3697 last_discriminator = discriminator;
3698 if (last_filename != NULL)
3699 free (last_filename);
3700 if (filename == NULL)
3701 last_filename = NULL;
3702 else
3703 last_filename = xstrdup (filename);
3704 }
3705 }
3706
3707 if (q->sym_ptr_ptr && *q->sym_ptr_ptr)
3708 {
3709 sym_name = (*(q->sym_ptr_ptr))->name;
3710 section_name = (*(q->sym_ptr_ptr))->section->name;
3711 }
3712 else
3713 {
3714 sym_name = NULL;
3715 section_name = NULL;
3716 }
3717
3718 bfd_printf_vma (abfd, q->address);
3719 if (q->howto == NULL)
3720 printf (" *unknown* ");
3721 else if (q->howto->name)
3722 {
3723 const char *name = q->howto->name;
3724
3725 /* R_SPARC_OLO10 relocations contain two addends.
3726 But because 'arelent' lacks enough storage to
3727 store them both, the 64-bit ELF Sparc backend
3728 records this as two relocations. One R_SPARC_LO10
3729 and one R_SPARC_13, both pointing to the same
3730 address. This is merely so that we have some
3731 place to store both addend fields.
3732
3733 Undo this transformation, otherwise the output
3734 will be confusing. */
3735 if (abfd->xvec->flavour == bfd_target_elf_flavour
3736 && elf_tdata(abfd)->elf_header->e_machine == EM_SPARCV9
3737 && relcount > 1
3738 && !strcmp (q->howto->name, "R_SPARC_LO10"))
3739 {
3740 arelent *q2 = *(p + 1);
3741 if (q2 != NULL
3742 && q2->howto
3743 && q->address == q2->address
3744 && !strcmp (q2->howto->name, "R_SPARC_13"))
3745 {
3746 name = "R_SPARC_OLO10";
3747 addend2 = q2->addend;
3748 p++;
3749 }
3750 }
3751 printf (" %-16s ", name);
3752 }
3753 else
3754 printf (" %-16d ", q->howto->type);
3755
3756 if (sym_name)
3757 {
3758 objdump_print_symname (abfd, NULL, *q->sym_ptr_ptr);
3759 }
3760 else
3761 {
3762 if (section_name == NULL)
3763 section_name = "*unknown*";
3764 printf ("[%s]", sanitize_string (section_name));
3765 }
3766
3767 if (q->addend)
3768 {
3769 bfd_signed_vma addend = q->addend;
3770 if (addend < 0)
3771 {
3772 printf ("-0x");
3773 addend = -addend;
3774 }
3775 else
3776 printf ("+0x");
3777 bfd_printf_vma (abfd, addend);
3778 }
3779 if (addend2)
3780 {
3781 printf ("+0x");
3782 bfd_printf_vma (abfd, addend2);
3783 }
3784
3785 printf ("\n");
3786 }
3787
3788 if (last_filename != NULL)
3789 free (last_filename);
3790 if (last_functionname != NULL)
3791 free (last_functionname);
3792 }
3793
3794 static void
3795 dump_relocs_in_section (bfd *abfd,
3796 asection *section,
3797 void *dummy ATTRIBUTE_UNUSED)
3798 {
3799 arelent **relpp = NULL;
3800 long relcount;
3801 long relsize;
3802
3803 if ( bfd_is_abs_section (section)
3804 || bfd_is_und_section (section)
3805 || bfd_is_com_section (section)
3806 || (! process_section_p (section))
3807 || ((section->flags & SEC_RELOC) == 0))
3808 return;
3809
3810 printf ("RELOCATION RECORDS FOR [%s]:", sanitize_string (section->name));
3811
3812 relsize = bfd_get_reloc_upper_bound (abfd, section);
3813 if (relsize == 0)
3814 {
3815 printf (" (none)\n\n");
3816 return;
3817 }
3818
3819 if (relsize < 0)
3820 relcount = relsize;
3821 else
3822 {
3823 relpp = (arelent **) xmalloc (relsize);
3824 relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
3825 }
3826
3827 if (relcount < 0)
3828 {
3829 printf ("\n");
3830 non_fatal (_("failed to read relocs in: %s"),
3831 sanitize_string (bfd_get_filename (abfd)));
3832 bfd_fatal (_("error message was"));
3833 }
3834 else if (relcount == 0)
3835 printf (" (none)\n\n");
3836 else
3837 {
3838 printf ("\n");
3839 dump_reloc_set (abfd, section, relpp, relcount);
3840 printf ("\n\n");
3841 }
3842 free (relpp);
3843 }
3844
3845 static void
3846 dump_relocs (bfd *abfd)
3847 {
3848 bfd_map_over_sections (abfd, dump_relocs_in_section, NULL);
3849 }
3850
3851 static void
3852 dump_dynamic_relocs (bfd *abfd)
3853 {
3854 long relsize;
3855 arelent **relpp;
3856 long relcount;
3857
3858 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
3859 if (relsize < 0)
3860 bfd_fatal (bfd_get_filename (abfd));
3861
3862 printf ("DYNAMIC RELOCATION RECORDS");
3863
3864 if (relsize == 0)
3865 printf (" (none)\n\n");
3866 else
3867 {
3868 relpp = (arelent **) xmalloc (relsize);
3869 relcount = bfd_canonicalize_dynamic_reloc (abfd, relpp, dynsyms);
3870
3871 if (relcount < 0)
3872 bfd_fatal (bfd_get_filename (abfd));
3873 else if (relcount == 0)
3874 printf (" (none)\n\n");
3875 else
3876 {
3877 printf ("\n");
3878 dump_reloc_set (abfd, NULL, relpp, relcount);
3879 printf ("\n\n");
3880 }
3881 free (relpp);
3882 }
3883 }
3884
3885 /* Creates a table of paths, to search for source files. */
3886
3887 static void
3888 add_include_path (const char *path)
3889 {
3890 if (path[0] == 0)
3891 return;
3892 include_path_count++;
3893 include_paths = (const char **)
3894 xrealloc (include_paths, include_path_count * sizeof (*include_paths));
3895 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3896 if (path[1] == ':' && path[2] == 0)
3897 path = concat (path, ".", (const char *) 0);
3898 #endif
3899 include_paths[include_path_count - 1] = path;
3900 }
3901
3902 static void
3903 adjust_addresses (bfd *abfd ATTRIBUTE_UNUSED,
3904 asection *section,
3905 void *arg)
3906 {
3907 if ((section->flags & SEC_DEBUGGING) == 0)
3908 {
3909 bfd_boolean *has_reloc_p = (bfd_boolean *) arg;
3910 section->vma += adjust_section_vma;
3911 if (*has_reloc_p)
3912 section->lma += adjust_section_vma;
3913 }
3914 }
3915
3916 /* Return the sign-extended form of an ARCH_SIZE sized VMA. */
3917
3918 static bfd_vma
3919 sign_extend_address (bfd *abfd ATTRIBUTE_UNUSED,
3920 bfd_vma vma,
3921 unsigned arch_size)
3922 {
3923 bfd_vma mask;
3924 mask = (bfd_vma) 1 << (arch_size - 1);
3925 return (((vma & ((mask << 1) - 1)) ^ mask) - mask);
3926 }
3927
3928 /* Dump selected contents of ABFD. */
3929
3930 static void
3931 dump_bfd (bfd *abfd, bfd_boolean is_mainfile)
3932 {
3933 const struct elf_backend_data * bed;
3934
3935 if (bfd_big_endian (abfd))
3936 byte_get = byte_get_big_endian;
3937 else if (bfd_little_endian (abfd))
3938 byte_get = byte_get_little_endian;
3939 else
3940 byte_get = NULL;
3941
3942 /* Load any separate debug information files.
3943 We do this now and without checking do_follow_links because separate
3944 debug info files may contain symbol tables that we will need when
3945 displaying information about the main file. Any memory allocated by
3946 load_separate_debug_files will be released when we call
3947 free_debug_memory below.
3948
3949 The test on is_mainfile is there because the chain of separate debug
3950 info files is a global variable shared by all invocations of dump_bfd. */
3951 if (is_mainfile)
3952 {
3953 load_separate_debug_files (abfd, bfd_get_filename (abfd));
3954
3955 /* If asked to do so, recursively dump the separate files. */
3956 if (do_follow_links)
3957 {
3958 separate_info * i;
3959
3960 for (i = first_separate_info; i != NULL; i = i->next)
3961 dump_bfd (i->handle, FALSE);
3962 }
3963 }
3964
3965 /* Adjust user-specified start and stop limits for targets that use
3966 signed addresses. */
3967 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
3968 && (bed = get_elf_backend_data (abfd)) != NULL
3969 && bed->sign_extend_vma)
3970 {
3971 start_address = sign_extend_address (abfd, start_address,
3972 bed->s->arch_size);
3973 stop_address = sign_extend_address (abfd, stop_address,
3974 bed->s->arch_size);
3975 }
3976
3977 /* If we are adjusting section VMA's, change them all now. Changing
3978 the BFD information is a hack. However, we must do it, or
3979 bfd_find_nearest_line will not do the right thing. */
3980 if (adjust_section_vma != 0)
3981 {
3982 bfd_boolean has_reloc = (abfd->flags & HAS_RELOC);
3983 bfd_map_over_sections (abfd, adjust_addresses, &has_reloc);
3984 }
3985
3986 if (! dump_debugging_tags && ! suppress_bfd_header)
3987 printf (_("\n%s: file format %s\n"),
3988 sanitize_string (bfd_get_filename (abfd)),
3989 abfd->xvec->name);
3990 if (dump_ar_hdrs)
3991 print_arelt_descr (stdout, abfd, TRUE, FALSE);
3992 if (dump_file_header)
3993 dump_bfd_header (abfd);
3994 if (dump_private_headers)
3995 dump_bfd_private_header (abfd);
3996 if (dump_private_options != NULL)
3997 dump_target_specific (abfd);
3998 if (! dump_debugging_tags && ! suppress_bfd_header)
3999 putchar ('\n');
4000
4001 if (dump_symtab
4002 || dump_reloc_info
4003 || disassemble
4004 || dump_debugging
4005 || dump_dwarf_section_info)
4006 {
4007 syms = slurp_symtab (abfd);
4008
4009 /* If following links, load any symbol tables from the linked files as well. */
4010 if (do_follow_links && is_mainfile)
4011 {
4012 separate_info * i;
4013
4014 for (i = first_separate_info; i != NULL; i = i->next)
4015 {
4016 asymbol ** extra_syms;
4017 long old_symcount = symcount;
4018
4019 extra_syms = slurp_symtab (i->handle);
4020
4021 if (extra_syms)
4022 {
4023 if (old_symcount == 0)
4024 {
4025 syms = extra_syms;
4026 }
4027 else
4028 {
4029 syms = xrealloc (syms, (symcount + old_symcount) * sizeof (asymbol *));
4030 memcpy (syms + old_symcount,
4031 extra_syms,
4032 symcount * sizeof (asymbol *));
4033 }
4034 }
4035
4036 symcount += old_symcount;
4037 }
4038 }
4039 }
4040
4041 if (dump_section_headers)
4042 dump_headers (abfd);
4043
4044 if (dump_dynamic_symtab || dump_dynamic_reloc_info
4045 || (disassemble && bfd_get_dynamic_symtab_upper_bound (abfd) > 0))
4046 dynsyms = slurp_dynamic_symtab (abfd);
4047
4048 if (disassemble)
4049 {
4050 synthcount = bfd_get_synthetic_symtab (abfd, symcount, syms,
4051 dynsymcount, dynsyms, &synthsyms);
4052 if (synthcount < 0)
4053 synthcount = 0;
4054 }
4055
4056 if (dump_symtab)
4057 dump_symbols (abfd, FALSE);
4058 if (dump_dynamic_symtab)
4059 dump_symbols (abfd, TRUE);
4060 if (dump_dwarf_section_info)
4061 dump_dwarf (abfd);
4062 if (dump_ctf_section_info)
4063 dump_ctf (abfd, dump_ctf_section_name, dump_ctf_parent_name);
4064 if (dump_stab_section_info)
4065 dump_stabs (abfd);
4066 if (dump_reloc_info && ! disassemble)
4067 dump_relocs (abfd);
4068 if (dump_dynamic_reloc_info && ! disassemble)
4069 dump_dynamic_relocs (abfd);
4070 if (dump_section_contents)
4071 dump_data (abfd);
4072 if (disassemble)
4073 disassemble_data (abfd);
4074
4075 if (dump_debugging)
4076 {
4077 void *dhandle;
4078
4079 dhandle = read_debugging_info (abfd, syms, symcount, TRUE);
4080 if (dhandle != NULL)
4081 {
4082 if (!print_debugging_info (stdout, dhandle, abfd, syms,
4083 bfd_demangle,
4084 dump_debugging_tags ? TRUE : FALSE))
4085 {
4086 non_fatal (_("%s: printing debugging information failed"),
4087 bfd_get_filename (abfd));
4088 exit_status = 1;
4089 }
4090
4091 free (dhandle);
4092 }
4093 /* PR 6483: If there was no STABS debug info in the file, try
4094 DWARF instead. */
4095 else if (! dump_dwarf_section_info)
4096 {
4097 dwarf_select_sections_all ();
4098 dump_dwarf (abfd);
4099 }
4100 }
4101
4102 if (syms)
4103 {
4104 free (syms);
4105 syms = NULL;
4106 }
4107
4108 if (dynsyms)
4109 {
4110 free (dynsyms);
4111 dynsyms = NULL;
4112 }
4113
4114 if (synthsyms)
4115 {
4116 free (synthsyms);
4117 synthsyms = NULL;
4118 }
4119
4120 symcount = 0;
4121 dynsymcount = 0;
4122 synthcount = 0;
4123
4124 if (is_mainfile)
4125 free_debug_memory ();
4126 }
4127
4128 static void
4129 display_object_bfd (bfd *abfd)
4130 {
4131 char **matching;
4132
4133 if (bfd_check_format_matches (abfd, bfd_object, &matching))
4134 {
4135 dump_bfd (abfd, TRUE);
4136 return;
4137 }
4138
4139 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
4140 {
4141 nonfatal (bfd_get_filename (abfd));
4142 list_matching_formats (matching);
4143 free (matching);
4144 return;
4145 }
4146
4147 if (bfd_get_error () != bfd_error_file_not_recognized)
4148 {
4149 nonfatal (bfd_get_filename (abfd));
4150 return;
4151 }
4152
4153 if (bfd_check_format_matches (abfd, bfd_core, &matching))
4154 {
4155 dump_bfd (abfd, TRUE);
4156 return;
4157 }
4158
4159 nonfatal (bfd_get_filename (abfd));
4160
4161 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
4162 {
4163 list_matching_formats (matching);
4164 free (matching);
4165 }
4166 }
4167
4168 static void
4169 display_any_bfd (bfd *file, int level)
4170 {
4171 /* Decompress sections unless dumping the section contents. */
4172 if (!dump_section_contents)
4173 file->flags |= BFD_DECOMPRESS;
4174
4175 /* If the file is an archive, process all of its elements. */
4176 if (bfd_check_format (file, bfd_archive))
4177 {
4178 bfd *arfile = NULL;
4179 bfd *last_arfile = NULL;
4180
4181 if (level == 0)
4182 printf (_("In archive %s:\n"), sanitize_string (bfd_get_filename (file)));
4183 else if (level > 100)
4184 {
4185 /* Prevent corrupted files from spinning us into an
4186 infinite loop. 100 is an arbitrary heuristic. */
4187 fatal (_("Archive nesting is too deep"));
4188 return;
4189 }
4190 else
4191 printf (_("In nested archive %s:\n"),
4192 sanitize_string (bfd_get_filename (file)));
4193
4194 for (;;)
4195 {
4196 bfd_set_error (bfd_error_no_error);
4197
4198 arfile = bfd_openr_next_archived_file (file, arfile);
4199 if (arfile == NULL)
4200 {
4201 if (bfd_get_error () != bfd_error_no_more_archived_files)
4202 nonfatal (bfd_get_filename (file));
4203 break;
4204 }
4205
4206 display_any_bfd (arfile, level + 1);
4207
4208 if (last_arfile != NULL)
4209 {
4210 bfd_close (last_arfile);
4211 /* PR 17512: file: ac585d01. */
4212 if (arfile == last_arfile)
4213 {
4214 last_arfile = NULL;
4215 break;
4216 }
4217 }
4218 last_arfile = arfile;
4219 }
4220
4221 if (last_arfile != NULL)
4222 bfd_close (last_arfile);
4223 }
4224 else
4225 display_object_bfd (file);
4226 }
4227
4228 static void
4229 display_file (char *filename, char *target, bfd_boolean last_file)
4230 {
4231 bfd *file;
4232
4233 if (get_file_size (filename) < 1)
4234 {
4235 exit_status = 1;
4236 return;
4237 }
4238
4239 file = bfd_openr (filename, target);
4240 if (file == NULL)
4241 {
4242 nonfatal (filename);
4243 return;
4244 }
4245
4246 display_any_bfd (file, 0);
4247
4248 /* This is an optimization to improve the speed of objdump, especially when
4249 dumping a file with lots of associated debug informatiom. Calling
4250 bfd_close on such a file can take a non-trivial amount of time as there
4251 are lots of lists to walk and buffers to free. This is only really
4252 necessary however if we are about to load another file and we need the
4253 memory back. Otherwise, if we are about to exit, then we can save (a lot
4254 of) time by only doing a quick close, and allowing the OS to reclaim the
4255 memory for us. */
4256 if (! last_file)
4257 bfd_close (file);
4258 else
4259 bfd_close_all_done (file);
4260 }
4261 \f
4262 int
4263 main (int argc, char **argv)
4264 {
4265 int c;
4266 char *target = default_target;
4267 bfd_boolean seenflag = FALSE;
4268
4269 #if defined (HAVE_SETLOCALE)
4270 #if defined (HAVE_LC_MESSAGES)
4271 setlocale (LC_MESSAGES, "");
4272 #endif
4273 setlocale (LC_CTYPE, "");
4274 #endif
4275
4276 bindtextdomain (PACKAGE, LOCALEDIR);
4277 textdomain (PACKAGE);
4278
4279 program_name = *argv;
4280 xmalloc_set_program_name (program_name);
4281 bfd_set_error_program_name (program_name);
4282
4283 START_PROGRESS (program_name, 0);
4284
4285 expandargv (&argc, &argv);
4286
4287 if (bfd_init () != BFD_INIT_MAGIC)
4288 fatal (_("fatal error: libbfd ABI mismatch"));
4289 set_default_bfd_target ();
4290
4291 while ((c = getopt_long (argc, argv,
4292 "pP:ib:m:M:VvCdDlfFaHhrRtTxsSI:j:wE:zgeGW::",
4293 long_options, (int *) 0))
4294 != EOF)
4295 {
4296 switch (c)
4297 {
4298 case 0:
4299 break; /* We've been given a long option. */
4300 case 'm':
4301 machine = optarg;
4302 break;
4303 case 'M':
4304 {
4305 char *options;
4306 if (disassembler_options)
4307 /* Ignore potential memory leak for now. */
4308 options = concat (disassembler_options, ",",
4309 optarg, (const char *) NULL);
4310 else
4311 options = optarg;
4312 disassembler_options = remove_whitespace_and_extra_commas (options);
4313 }
4314 break;
4315 case 'j':
4316 add_only (optarg);
4317 break;
4318 case 'F':
4319 display_file_offsets = TRUE;
4320 break;
4321 case 'l':
4322 with_line_numbers = TRUE;
4323 break;
4324 case 'b':
4325 target = optarg;
4326 break;
4327 case 'C':
4328 do_demangle = TRUE;
4329 if (optarg != NULL)
4330 {
4331 enum demangling_styles style;
4332
4333 style = cplus_demangle_name_to_style (optarg);
4334 if (style == unknown_demangling)
4335 fatal (_("unknown demangling style `%s'"),
4336 optarg);
4337
4338 cplus_demangle_set_style (style);
4339 }
4340 break;
4341 case OPTION_RECURSE_LIMIT:
4342 demangle_flags &= ~ DMGL_NO_RECURSE_LIMIT;
4343 break;
4344 case OPTION_NO_RECURSE_LIMIT:
4345 demangle_flags |= DMGL_NO_RECURSE_LIMIT;
4346 break;
4347 case 'w':
4348 do_wide = wide_output = TRUE;
4349 break;
4350 case OPTION_ADJUST_VMA:
4351 adjust_section_vma = parse_vma (optarg, "--adjust-vma");
4352 break;
4353 case OPTION_START_ADDRESS:
4354 start_address = parse_vma (optarg, "--start-address");
4355 if ((stop_address != (bfd_vma) -1) && stop_address <= start_address)
4356 fatal (_("error: the start address should be before the end address"));
4357 break;
4358 case OPTION_STOP_ADDRESS:
4359 stop_address = parse_vma (optarg, "--stop-address");
4360 if ((start_address != (bfd_vma) -1) && stop_address <= start_address)
4361 fatal (_("error: the stop address should be after the start address"));
4362 break;
4363 case OPTION_PREFIX:
4364 prefix = optarg;
4365 prefix_length = strlen (prefix);
4366 /* Remove an unnecessary trailing '/' */
4367 while (IS_DIR_SEPARATOR (prefix[prefix_length - 1]))
4368 prefix_length--;
4369 break;
4370 case OPTION_PREFIX_STRIP:
4371 prefix_strip = atoi (optarg);
4372 if (prefix_strip < 0)
4373 fatal (_("error: prefix strip must be non-negative"));
4374 break;
4375 case OPTION_INSN_WIDTH:
4376 insn_width = strtoul (optarg, NULL, 0);
4377 if (insn_width <= 0)
4378 fatal (_("error: instruction width must be positive"));
4379 break;
4380 case OPTION_INLINES:
4381 unwind_inlines = TRUE;
4382 break;
4383 case 'E':
4384 if (strcmp (optarg, "B") == 0)
4385 endian = BFD_ENDIAN_BIG;
4386 else if (strcmp (optarg, "L") == 0)
4387 endian = BFD_ENDIAN_LITTLE;
4388 else
4389 {
4390 nonfatal (_("unrecognized -E option"));
4391 usage (stderr, 1);
4392 }
4393 break;
4394 case OPTION_ENDIAN:
4395 if (strncmp (optarg, "big", strlen (optarg)) == 0)
4396 endian = BFD_ENDIAN_BIG;
4397 else if (strncmp (optarg, "little", strlen (optarg)) == 0)
4398 endian = BFD_ENDIAN_LITTLE;
4399 else
4400 {
4401 non_fatal (_("unrecognized --endian type `%s'"), optarg);
4402 exit_status = 1;
4403 usage (stderr, 1);
4404 }
4405 break;
4406
4407 case 'f':
4408 dump_file_header = TRUE;
4409 seenflag = TRUE;
4410 break;
4411 case 'i':
4412 formats_info = TRUE;
4413 seenflag = TRUE;
4414 break;
4415 case 'I':
4416 add_include_path (optarg);
4417 break;
4418 case 'p':
4419 dump_private_headers = TRUE;
4420 seenflag = TRUE;
4421 break;
4422 case 'P':
4423 dump_private_options = optarg;
4424 seenflag = TRUE;
4425 break;
4426 case 'x':
4427 dump_private_headers = TRUE;
4428 dump_symtab = TRUE;
4429 dump_reloc_info = TRUE;
4430 dump_file_header = TRUE;
4431 dump_ar_hdrs = TRUE;
4432 dump_section_headers = TRUE;
4433 seenflag = TRUE;
4434 break;
4435 case 't':
4436 dump_symtab = TRUE;
4437 seenflag = TRUE;
4438 break;
4439 case 'T':
4440 dump_dynamic_symtab = TRUE;
4441 seenflag = TRUE;
4442 break;
4443 case 'd':
4444 disassemble = TRUE;
4445 seenflag = TRUE;
4446 disasm_sym = optarg;
4447 break;
4448 case 'z':
4449 disassemble_zeroes = TRUE;
4450 break;
4451 case 'D':
4452 disassemble = TRUE;
4453 disassemble_all = TRUE;
4454 seenflag = TRUE;
4455 break;
4456 case 'S':
4457 disassemble = TRUE;
4458 with_source_code = TRUE;
4459 seenflag = TRUE;
4460 break;
4461 case 'g':
4462 dump_debugging = 1;
4463 seenflag = TRUE;
4464 break;
4465 case 'e':
4466 dump_debugging = 1;
4467 dump_debugging_tags = 1;
4468 do_demangle = TRUE;
4469 seenflag = TRUE;
4470 break;
4471 case 'W':
4472 dump_dwarf_section_info = TRUE;
4473 seenflag = TRUE;
4474 if (optarg)
4475 dwarf_select_sections_by_letters (optarg);
4476 else
4477 dwarf_select_sections_all ();
4478 break;
4479 case OPTION_DWARF:
4480 dump_dwarf_section_info = TRUE;
4481 seenflag = TRUE;
4482 if (optarg)
4483 dwarf_select_sections_by_names (optarg);
4484 else
4485 dwarf_select_sections_all ();
4486 break;
4487 case OPTION_DWARF_DEPTH:
4488 {
4489 char *cp;
4490 dwarf_cutoff_level = strtoul (optarg, & cp, 0);
4491 }
4492 break;
4493 case OPTION_DWARF_START:
4494 {
4495 char *cp;
4496 dwarf_start_die = strtoul (optarg, & cp, 0);
4497 suppress_bfd_header = 1;
4498 }
4499 break;
4500 case OPTION_DWARF_CHECK:
4501 dwarf_check = TRUE;
4502 break;
4503 case OPTION_CTF:
4504 dump_ctf_section_info = TRUE;
4505 dump_ctf_section_name = xstrdup (optarg);
4506 seenflag = TRUE;
4507 break;
4508 case OPTION_CTF_PARENT:
4509 dump_ctf_parent_name = xstrdup (optarg);
4510 break;
4511 case 'G':
4512 dump_stab_section_info = TRUE;
4513 seenflag = TRUE;
4514 break;
4515 case 's':
4516 dump_section_contents = TRUE;
4517 seenflag = TRUE;
4518 break;
4519 case 'r':
4520 dump_reloc_info = TRUE;
4521 seenflag = TRUE;
4522 break;
4523 case 'R':
4524 dump_dynamic_reloc_info = TRUE;
4525 seenflag = TRUE;
4526 break;
4527 case 'a':
4528 dump_ar_hdrs = TRUE;
4529 seenflag = TRUE;
4530 break;
4531 case 'h':
4532 dump_section_headers = TRUE;
4533 seenflag = TRUE;
4534 break;
4535 case 'v':
4536 case 'V':
4537 show_version = TRUE;
4538 seenflag = TRUE;
4539 break;
4540
4541 case 'H':
4542 usage (stdout, 0);
4543 /* No need to set seenflag or to break - usage() does not return. */
4544 default:
4545 usage (stderr, 1);
4546 }
4547 }
4548
4549 if (show_version)
4550 print_version ("objdump");
4551
4552 if (!seenflag)
4553 usage (stderr, 2);
4554
4555 if (formats_info)
4556 exit_status = display_info ();
4557 else
4558 {
4559 if (optind == argc)
4560 display_file ("a.out", target, TRUE);
4561 else
4562 for (; optind < argc;)
4563 {
4564 display_file (argv[optind], target, optind == argc - 1);
4565 optind++;
4566 }
4567 }
4568
4569 free_only_list ();
4570 free (dump_ctf_section_name);
4571 free (dump_ctf_parent_name);
4572
4573 END_PROGRESS (program_name);
4574
4575 return exit_status;
4576 }
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