* objdump.c (struct SFILE): Replace current pointer with pos
[deliverable/binutils-gdb.git] / binutils / objdump.c
1 /* objdump.c -- dump information about an object file.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001, 2002, 2003
4 Free Software Foundation, Inc.
5
6 This file is part of GNU Binutils.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
11 any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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 "bfd.h"
52 #include "bfdver.h"
53 #include "progress.h"
54 #include "bucomm.h"
55 #include "budemang.h"
56 #include "getopt.h"
57 #include "safe-ctype.h"
58 #include "dis-asm.h"
59 #include "libiberty.h"
60 #include "demangle.h"
61 #include "debug.h"
62 #include "budbg.h"
63
64 /* Internal headers for the ELF .stab-dump code - sorry. */
65 #define BYTES_IN_WORD 32
66 #include "aout/aout64.h"
67
68 #ifdef NEED_DECLARATION_FPRINTF
69 /* This is needed by init_disassemble_info(). */
70 extern int fprintf (FILE *, const char *, ...);
71 #endif
72
73 /* Exit status. */
74 static int exit_status = 0;
75
76 static char *default_target = NULL; /* Default at runtime. */
77
78 /* The following variables are set based on arguments passed on the
79 command line. */
80 static int show_version = 0; /* Show the version number. */
81 static int dump_section_contents; /* -s */
82 static int dump_section_headers; /* -h */
83 static bfd_boolean dump_file_header; /* -f */
84 static int dump_symtab; /* -t */
85 static int dump_dynamic_symtab; /* -T */
86 static int dump_reloc_info; /* -r */
87 static int dump_dynamic_reloc_info; /* -R */
88 static int dump_ar_hdrs; /* -a */
89 static int dump_private_headers; /* -p */
90 static int prefix_addresses; /* --prefix-addresses */
91 static int with_line_numbers; /* -l */
92 static bfd_boolean with_source_code; /* -S */
93 static int show_raw_insn; /* --show-raw-insn */
94 static int dump_stab_section_info; /* --stabs */
95 static int do_demangle; /* -C, --demangle */
96 static bfd_boolean disassemble; /* -d */
97 static bfd_boolean disassemble_all; /* -D */
98 static int disassemble_zeroes; /* --disassemble-zeroes */
99 static bfd_boolean formats_info; /* -i */
100 static int wide_output; /* -w */
101 static bfd_vma start_address = (bfd_vma) -1; /* --start-address */
102 static bfd_vma stop_address = (bfd_vma) -1; /* --stop-address */
103 static int dump_debugging; /* --debugging */
104 static int dump_debugging_tags; /* --debugging-tags */
105 static bfd_vma adjust_section_vma = 0; /* --adjust-vma */
106 static int file_start_context = 0; /* --file-start-context */
107
108 /* Pointer to an array of section names provided by
109 one or more "-j secname" command line options. */
110 static char **only;
111 /* The total number of slots in the only[] array. */
112 static size_t only_size = 0;
113 /* The number of occupied slots in the only[] array. */
114 static size_t only_used = 0;
115
116 /* Variables for handling include file path table. */
117 static const char **include_paths;
118 static int include_path_count;
119
120 /* Extra info to pass to the section disassembler and address printing
121 function. */
122 struct objdump_disasm_info
123 {
124 bfd * abfd;
125 asection * sec;
126 bfd_boolean require_sec;
127 arelent ** dynrelbuf;
128 long dynrelcount;
129 disassembler_ftype disassemble_fn;
130 };
131
132 /* Architecture to disassemble for, or default if NULL. */
133 static char *machine = NULL;
134
135 /* Target specific options to the disassembler. */
136 static char *disassembler_options = NULL;
137
138 /* Endianness to disassemble for, or default if BFD_ENDIAN_UNKNOWN. */
139 static enum bfd_endian endian = BFD_ENDIAN_UNKNOWN;
140
141 /* The symbol table. */
142 static asymbol **syms;
143
144 /* Number of symbols in `syms'. */
145 static long symcount = 0;
146
147 /* The sorted symbol table. */
148 static asymbol **sorted_syms;
149
150 /* Number of symbols in `sorted_syms'. */
151 static long sorted_symcount = 0;
152
153 /* The dynamic symbol table. */
154 static asymbol **dynsyms;
155
156 /* Number of symbols in `dynsyms'. */
157 static long dynsymcount = 0;
158
159 static bfd_byte *stabs;
160 static bfd_size_type stab_size;
161
162 static char *strtab;
163 static bfd_size_type stabstr_size;
164 \f
165 static void
166 usage (FILE *stream, int status)
167 {
168 fprintf (stream, _("Usage: %s <option(s)> <file(s)>\n"), program_name);
169 fprintf (stream, _(" Display information from object <file(s)>.\n"));
170 fprintf (stream, _(" At least one of the following switches must be given:\n"));
171 fprintf (stream, _("\
172 -a, --archive-headers Display archive header information\n\
173 -f, --file-headers Display the contents of the overall file header\n\
174 -p, --private-headers Display object format specific file header contents\n\
175 -h, --[section-]headers Display the contents of the section headers\n\
176 -x, --all-headers Display the contents of all headers\n\
177 -d, --disassemble Display assembler contents of executable sections\n\
178 -D, --disassemble-all Display assembler contents of all sections\n\
179 -S, --source Intermix source code with disassembly\n\
180 -s, --full-contents Display the full contents of all sections requested\n\
181 -g, --debugging Display debug information in object file\n\
182 -e, --debugging-tags Display debug information using ctags style\n\
183 -G, --stabs Display (in raw form) any STABS info in the file\n\
184 -t, --syms Display the contents of the symbol table(s)\n\
185 -T, --dynamic-syms Display the contents of the dynamic symbol table\n\
186 -r, --reloc Display the relocation entries in the file\n\
187 -R, --dynamic-reloc Display the dynamic relocation entries in the file\n\
188 -v, --version Display this program's version number\n\
189 -i, --info List object formats and architectures supported\n\
190 -H, --help Display this information\n\
191 "));
192 if (status != 2)
193 {
194 fprintf (stream, _("\n The following switches are optional:\n"));
195 fprintf (stream, _("\
196 -b, --target=BFDNAME Specify the target object format as BFDNAME\n\
197 -m, --architecture=MACHINE Specify the target architecture as MACHINE\n\
198 -j, --section=NAME Only display information for section NAME\n\
199 -M, --disassembler-options=OPT Pass text OPT on to the disassembler\n\
200 -EB --endian=big Assume big endian format when disassembling\n\
201 -EL --endian=little Assume little endian format when disassembling\n\
202 --file-start-context Include context from start of file (with -S)\n\
203 -I, --include=DIR Add DIR to search list for source files\n\
204 -l, --line-numbers Include line numbers and filenames in output\n\
205 -C, --demangle[=STYLE] Decode mangled/processed symbol names\n\
206 The STYLE, if specified, can be `auto', `gnu',\n\
207 `lucid', `arm', `hp', `edg', `gnu-v3', `java'\n\
208 or `gnat'\n\
209 -w, --wide Format output for more than 80 columns\n\
210 -z, --disassemble-zeroes Do not skip blocks of zeroes when disassembling\n\
211 --start-address=ADDR Only process data whose address is >= ADDR\n\
212 --stop-address=ADDR Only process data whose address is <= ADDR\n\
213 --prefix-addresses Print complete address alongside disassembly\n\
214 --[no-]show-raw-insn Display hex alongside symbolic disassembly\n\
215 --adjust-vma=OFFSET Add OFFSET to all displayed section addresses\n\
216 \n"));
217 list_supported_targets (program_name, stream);
218 list_supported_architectures (program_name, stream);
219
220 disassembler_usage (stream);
221 }
222 if (status == 0)
223 fprintf (stream, _("Report bugs to %s.\n"), REPORT_BUGS_TO);
224 exit (status);
225 }
226
227 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
228 enum option_values
229 {
230 OPTION_ENDIAN=150,
231 OPTION_START_ADDRESS,
232 OPTION_STOP_ADDRESS,
233 OPTION_ADJUST_VMA
234 };
235
236 static struct option long_options[]=
237 {
238 {"adjust-vma", required_argument, NULL, OPTION_ADJUST_VMA},
239 {"all-headers", no_argument, NULL, 'x'},
240 {"private-headers", no_argument, NULL, 'p'},
241 {"architecture", required_argument, NULL, 'm'},
242 {"archive-headers", no_argument, NULL, 'a'},
243 {"debugging", no_argument, NULL, 'g'},
244 {"debugging-tags", no_argument, NULL, 'e'},
245 {"demangle", optional_argument, NULL, 'C'},
246 {"disassemble", no_argument, NULL, 'd'},
247 {"disassemble-all", no_argument, NULL, 'D'},
248 {"disassembler-options", required_argument, NULL, 'M'},
249 {"disassemble-zeroes", no_argument, NULL, 'z'},
250 {"dynamic-reloc", no_argument, NULL, 'R'},
251 {"dynamic-syms", no_argument, NULL, 'T'},
252 {"endian", required_argument, NULL, OPTION_ENDIAN},
253 {"file-headers", no_argument, NULL, 'f'},
254 {"file-start-context", no_argument, &file_start_context, 1},
255 {"full-contents", no_argument, NULL, 's'},
256 {"headers", no_argument, NULL, 'h'},
257 {"help", no_argument, NULL, 'H'},
258 {"info", no_argument, NULL, 'i'},
259 {"line-numbers", no_argument, NULL, 'l'},
260 {"no-show-raw-insn", no_argument, &show_raw_insn, -1},
261 {"prefix-addresses", no_argument, &prefix_addresses, 1},
262 {"reloc", no_argument, NULL, 'r'},
263 {"section", required_argument, NULL, 'j'},
264 {"section-headers", no_argument, NULL, 'h'},
265 {"show-raw-insn", no_argument, &show_raw_insn, 1},
266 {"source", no_argument, NULL, 'S'},
267 {"include", required_argument, NULL, 'I'},
268 {"stabs", no_argument, NULL, 'G'},
269 {"start-address", required_argument, NULL, OPTION_START_ADDRESS},
270 {"stop-address", required_argument, NULL, OPTION_STOP_ADDRESS},
271 {"syms", no_argument, NULL, 't'},
272 {"target", required_argument, NULL, 'b'},
273 {"version", no_argument, NULL, 'V'},
274 {"wide", no_argument, NULL, 'w'},
275 {0, no_argument, 0, 0}
276 };
277 \f
278 static void
279 nonfatal (const char *msg)
280 {
281 bfd_nonfatal (msg);
282 exit_status = 1;
283 }
284 \f
285 static void
286 dump_section_header (bfd *abfd ATTRIBUTE_UNUSED, asection *section,
287 void *ignored ATTRIBUTE_UNUSED)
288 {
289 char *comma = "";
290 unsigned int opb = bfd_octets_per_byte (abfd);
291
292 printf ("%3d %-13s %08lx ", section->index,
293 bfd_get_section_name (abfd, section),
294 (unsigned long) bfd_section_size (abfd, section) / opb);
295 bfd_printf_vma (abfd, bfd_get_section_vma (abfd, section));
296 printf (" ");
297 bfd_printf_vma (abfd, section->lma);
298 printf (" %08lx 2**%u", (unsigned long) section->filepos,
299 bfd_get_section_alignment (abfd, section));
300 if (! wide_output)
301 printf ("\n ");
302 printf (" ");
303
304 #define PF(x, y) \
305 if (section->flags & x) { printf ("%s%s", comma, y); comma = ", "; }
306
307 PF (SEC_HAS_CONTENTS, "CONTENTS");
308 PF (SEC_ALLOC, "ALLOC");
309 PF (SEC_CONSTRUCTOR, "CONSTRUCTOR");
310 PF (SEC_LOAD, "LOAD");
311 PF (SEC_RELOC, "RELOC");
312 PF (SEC_READONLY, "READONLY");
313 PF (SEC_CODE, "CODE");
314 PF (SEC_DATA, "DATA");
315 PF (SEC_ROM, "ROM");
316 PF (SEC_DEBUGGING, "DEBUGGING");
317 PF (SEC_NEVER_LOAD, "NEVER_LOAD");
318 PF (SEC_EXCLUDE, "EXCLUDE");
319 PF (SEC_SORT_ENTRIES, "SORT_ENTRIES");
320 PF (SEC_BLOCK, "BLOCK");
321 PF (SEC_CLINK, "CLINK");
322 PF (SEC_SMALL_DATA, "SMALL_DATA");
323 PF (SEC_SHARED, "SHARED");
324 PF (SEC_ARCH_BIT_0, "ARCH_BIT_0");
325 PF (SEC_THREAD_LOCAL, "THREAD_LOCAL");
326
327 if ((section->flags & SEC_LINK_ONCE) != 0)
328 {
329 const char *ls;
330
331 switch (section->flags & SEC_LINK_DUPLICATES)
332 {
333 default:
334 abort ();
335 case SEC_LINK_DUPLICATES_DISCARD:
336 ls = "LINK_ONCE_DISCARD";
337 break;
338 case SEC_LINK_DUPLICATES_ONE_ONLY:
339 ls = "LINK_ONCE_ONE_ONLY";
340 break;
341 case SEC_LINK_DUPLICATES_SAME_SIZE:
342 ls = "LINK_ONCE_SAME_SIZE";
343 break;
344 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
345 ls = "LINK_ONCE_SAME_CONTENTS";
346 break;
347 }
348 printf ("%s%s", comma, ls);
349
350 if (section->comdat != NULL)
351 printf (" (COMDAT %s %ld)", section->comdat->name,
352 section->comdat->symbol);
353
354 comma = ", ";
355 }
356
357 printf ("\n");
358 #undef PF
359 }
360
361 static void
362 dump_headers (bfd *abfd)
363 {
364 printf (_("Sections:\n"));
365
366 #ifndef BFD64
367 printf (_("Idx Name Size VMA LMA File off Algn"));
368 #else
369 /* With BFD64, non-ELF returns -1 and wants always 64 bit addresses. */
370 if (bfd_get_arch_size (abfd) == 32)
371 printf (_("Idx Name Size VMA LMA File off Algn"));
372 else
373 printf (_("Idx Name Size VMA LMA File off Algn"));
374 #endif
375
376 if (wide_output)
377 printf (_(" Flags"));
378 if (abfd->flags & HAS_LOAD_PAGE)
379 printf (_(" Pg"));
380 printf ("\n");
381
382 bfd_map_over_sections (abfd, dump_section_header, NULL);
383 }
384 \f
385 static asymbol **
386 slurp_symtab (bfd *abfd)
387 {
388 asymbol **sy = NULL;
389 long storage;
390
391 if (!(bfd_get_file_flags (abfd) & HAS_SYMS))
392 {
393 symcount = 0;
394 return NULL;
395 }
396
397 storage = bfd_get_symtab_upper_bound (abfd);
398 if (storage < 0)
399 bfd_fatal (bfd_get_filename (abfd));
400 if (storage)
401 sy = xmalloc (storage);
402
403 symcount = bfd_canonicalize_symtab (abfd, sy);
404 if (symcount < 0)
405 bfd_fatal (bfd_get_filename (abfd));
406 return sy;
407 }
408
409 /* Read in the dynamic symbols. */
410
411 static asymbol **
412 slurp_dynamic_symtab (bfd *abfd)
413 {
414 asymbol **sy = NULL;
415 long storage;
416
417 storage = bfd_get_dynamic_symtab_upper_bound (abfd);
418 if (storage < 0)
419 {
420 if (!(bfd_get_file_flags (abfd) & DYNAMIC))
421 {
422 non_fatal (_("%s: not a dynamic object"), bfd_get_filename (abfd));
423 dynsymcount = 0;
424 return NULL;
425 }
426
427 bfd_fatal (bfd_get_filename (abfd));
428 }
429 if (storage)
430 sy = xmalloc (storage);
431
432 dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, sy);
433 if (dynsymcount < 0)
434 bfd_fatal (bfd_get_filename (abfd));
435 return sy;
436 }
437
438 /* Filter out (in place) symbols that are useless for disassembly.
439 COUNT is the number of elements in SYMBOLS.
440 Return the number of useful symbols. */
441
442 static long
443 remove_useless_symbols (asymbol **symbols, long count)
444 {
445 asymbol **in_ptr = symbols, **out_ptr = symbols;
446
447 while (--count >= 0)
448 {
449 asymbol *sym = *in_ptr++;
450
451 if (sym->name == NULL || sym->name[0] == '\0')
452 continue;
453 if (sym->flags & (BSF_DEBUGGING))
454 continue;
455 if (bfd_is_und_section (sym->section)
456 || bfd_is_com_section (sym->section))
457 continue;
458
459 *out_ptr++ = sym;
460 }
461 return out_ptr - symbols;
462 }
463
464 /* Sort symbols into value order. */
465
466 static int
467 compare_symbols (const void *ap, const void *bp)
468 {
469 const asymbol *a = * (const asymbol **) ap;
470 const asymbol *b = * (const asymbol **) bp;
471 const char *an;
472 const char *bn;
473 size_t anl;
474 size_t bnl;
475 bfd_boolean af;
476 bfd_boolean bf;
477 flagword aflags;
478 flagword bflags;
479
480 if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
481 return 1;
482 else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
483 return -1;
484
485 if (a->section > b->section)
486 return 1;
487 else if (a->section < b->section)
488 return -1;
489
490 an = bfd_asymbol_name (a);
491 bn = bfd_asymbol_name (b);
492 anl = strlen (an);
493 bnl = strlen (bn);
494
495 /* The symbols gnu_compiled and gcc2_compiled convey no real
496 information, so put them after other symbols with the same value. */
497 af = (strstr (an, "gnu_compiled") != NULL
498 || strstr (an, "gcc2_compiled") != NULL);
499 bf = (strstr (bn, "gnu_compiled") != NULL
500 || strstr (bn, "gcc2_compiled") != NULL);
501
502 if (af && ! bf)
503 return 1;
504 if (! af && bf)
505 return -1;
506
507 /* We use a heuristic for the file name, to try to sort it after
508 more useful symbols. It may not work on non Unix systems, but it
509 doesn't really matter; the only difference is precisely which
510 symbol names get printed. */
511
512 #define file_symbol(s, sn, snl) \
513 (((s)->flags & BSF_FILE) != 0 \
514 || ((sn)[(snl) - 2] == '.' \
515 && ((sn)[(snl) - 1] == 'o' \
516 || (sn)[(snl) - 1] == 'a')))
517
518 af = file_symbol (a, an, anl);
519 bf = file_symbol (b, bn, bnl);
520
521 if (af && ! bf)
522 return 1;
523 if (! af && bf)
524 return -1;
525
526 /* Try to sort global symbols before local symbols before function
527 symbols before debugging symbols. */
528
529 aflags = a->flags;
530 bflags = b->flags;
531
532 if ((aflags & BSF_DEBUGGING) != (bflags & BSF_DEBUGGING))
533 {
534 if ((aflags & BSF_DEBUGGING) != 0)
535 return 1;
536 else
537 return -1;
538 }
539 if ((aflags & BSF_FUNCTION) != (bflags & BSF_FUNCTION))
540 {
541 if ((aflags & BSF_FUNCTION) != 0)
542 return -1;
543 else
544 return 1;
545 }
546 if ((aflags & BSF_LOCAL) != (bflags & BSF_LOCAL))
547 {
548 if ((aflags & BSF_LOCAL) != 0)
549 return 1;
550 else
551 return -1;
552 }
553 if ((aflags & BSF_GLOBAL) != (bflags & BSF_GLOBAL))
554 {
555 if ((aflags & BSF_GLOBAL) != 0)
556 return -1;
557 else
558 return 1;
559 }
560
561 /* Symbols that start with '.' might be section names, so sort them
562 after symbols that don't start with '.'. */
563 if (an[0] == '.' && bn[0] != '.')
564 return 1;
565 if (an[0] != '.' && bn[0] == '.')
566 return -1;
567
568 /* Finally, if we can't distinguish them in any other way, try to
569 get consistent results by sorting the symbols by name. */
570 return strcmp (an, bn);
571 }
572
573 /* Sort relocs into address order. */
574
575 static int
576 compare_relocs (const void *ap, const void *bp)
577 {
578 const arelent *a = * (const arelent **) ap;
579 const arelent *b = * (const arelent **) bp;
580
581 if (a->address > b->address)
582 return 1;
583 else if (a->address < b->address)
584 return -1;
585
586 /* So that associated relocations tied to the same address show up
587 in the correct order, we don't do any further sorting. */
588 if (a > b)
589 return 1;
590 else if (a < b)
591 return -1;
592 else
593 return 0;
594 }
595
596 /* Print an address (VMA) to the output stream in INFO.
597 If SKIP_ZEROES is TRUE, omit leading zeroes. */
598
599 static void
600 objdump_print_value (bfd_vma vma, struct disassemble_info *info,
601 bfd_boolean skip_zeroes)
602 {
603 char buf[30];
604 char *p;
605 struct objdump_disasm_info *aux;
606
607 aux = (struct objdump_disasm_info *) info->application_data;
608 bfd_sprintf_vma (aux->abfd, buf, vma);
609 if (! skip_zeroes)
610 p = buf;
611 else
612 {
613 for (p = buf; *p == '0'; ++p)
614 ;
615 if (*p == '\0')
616 --p;
617 }
618 (*info->fprintf_func) (info->stream, "%s", p);
619 }
620
621 /* Print the name of a symbol. */
622
623 static void
624 objdump_print_symname (bfd *abfd, struct disassemble_info *info,
625 asymbol *sym)
626 {
627 char *alloc;
628 const char *name;
629
630 alloc = NULL;
631 name = bfd_asymbol_name (sym);
632 if (do_demangle && name[0] != '\0')
633 {
634 /* Demangle the name. */
635 alloc = demangle (abfd, name);
636 name = alloc;
637 }
638
639 if (info != NULL)
640 (*info->fprintf_func) (info->stream, "%s", name);
641 else
642 printf ("%s", name);
643
644 if (alloc != NULL)
645 free (alloc);
646 }
647
648 /* Locate a symbol given a bfd and a section (from INFO->application_data),
649 and a VMA. If INFO->application_data->require_sec is TRUE, then always
650 require the symbol to be in the section. Returns NULL if there is no
651 suitable symbol. If PLACE is not NULL, then *PLACE is set to the index
652 of the symbol in sorted_syms. */
653
654 static asymbol *
655 find_symbol_for_address (bfd_vma vma,
656 struct disassemble_info *info,
657 long *place)
658 {
659 /* @@ Would it speed things up to cache the last two symbols returned,
660 and maybe their address ranges? For many processors, only one memory
661 operand can be present at a time, so the 2-entry cache wouldn't be
662 constantly churned by code doing heavy memory accesses. */
663
664 /* Indices in `sorted_syms'. */
665 long min = 0;
666 long max = sorted_symcount;
667 long thisplace;
668 struct objdump_disasm_info *aux;
669 bfd *abfd;
670 asection *sec;
671 unsigned int opb;
672
673 if (sorted_symcount < 1)
674 return NULL;
675
676 aux = (struct objdump_disasm_info *) info->application_data;
677 abfd = aux->abfd;
678 sec = aux->sec;
679 opb = bfd_octets_per_byte (abfd);
680
681 /* Perform a binary search looking for the closest symbol to the
682 required value. We are searching the range (min, max]. */
683 while (min + 1 < max)
684 {
685 asymbol *sym;
686
687 thisplace = (max + min) / 2;
688 sym = sorted_syms[thisplace];
689
690 if (bfd_asymbol_value (sym) > vma)
691 max = thisplace;
692 else if (bfd_asymbol_value (sym) < vma)
693 min = thisplace;
694 else
695 {
696 min = thisplace;
697 break;
698 }
699 }
700
701 /* The symbol we want is now in min, the low end of the range we
702 were searching. If there are several symbols with the same
703 value, we want the first one. */
704 thisplace = min;
705 while (thisplace > 0
706 && (bfd_asymbol_value (sorted_syms[thisplace])
707 == bfd_asymbol_value (sorted_syms[thisplace - 1])))
708 --thisplace;
709
710 /* If the file is relocatable, and the symbol could be from this
711 section, prefer a symbol from this section over symbols from
712 others, even if the other symbol's value might be closer.
713
714 Note that this may be wrong for some symbol references if the
715 sections have overlapping memory ranges, but in that case there's
716 no way to tell what's desired without looking at the relocation
717 table. */
718 if (sorted_syms[thisplace]->section != sec
719 && (aux->require_sec
720 || ((abfd->flags & HAS_RELOC) != 0
721 && vma >= bfd_get_section_vma (abfd, sec)
722 && vma < (bfd_get_section_vma (abfd, sec)
723 + bfd_section_size (abfd, sec) / opb))))
724 {
725 long i;
726
727 for (i = thisplace + 1; i < sorted_symcount; i++)
728 {
729 if (bfd_asymbol_value (sorted_syms[i])
730 != bfd_asymbol_value (sorted_syms[thisplace]))
731 break;
732 }
733
734 --i;
735
736 for (; i >= 0; i--)
737 {
738 if (sorted_syms[i]->section == sec
739 && (i == 0
740 || sorted_syms[i - 1]->section != sec
741 || (bfd_asymbol_value (sorted_syms[i])
742 != bfd_asymbol_value (sorted_syms[i - 1]))))
743 {
744 thisplace = i;
745 break;
746 }
747 }
748
749 if (sorted_syms[thisplace]->section != sec)
750 {
751 /* We didn't find a good symbol with a smaller value.
752 Look for one with a larger value. */
753 for (i = thisplace + 1; i < sorted_symcount; i++)
754 {
755 if (sorted_syms[i]->section == sec)
756 {
757 thisplace = i;
758 break;
759 }
760 }
761 }
762
763 if (sorted_syms[thisplace]->section != sec
764 && (aux->require_sec
765 || ((abfd->flags & HAS_RELOC) != 0
766 && vma >= bfd_get_section_vma (abfd, sec)
767 && vma < (bfd_get_section_vma (abfd, sec)
768 + bfd_section_size (abfd, sec)))))
769 /* There is no suitable symbol. */
770 return NULL;
771 }
772
773 /* Give the target a chance to reject the symbol. */
774 while (! info->symbol_is_valid (sorted_syms [thisplace], info))
775 {
776 ++ thisplace;
777 if (thisplace >= sorted_symcount
778 || bfd_asymbol_value (sorted_syms [thisplace]) > vma)
779 return NULL;
780 }
781
782 if (place != NULL)
783 *place = thisplace;
784
785 return sorted_syms[thisplace];
786 }
787
788 /* Print an address and the offset to the nearest symbol. */
789
790 static void
791 objdump_print_addr_with_sym (bfd *abfd, asection *sec, asymbol *sym,
792 bfd_vma vma, struct disassemble_info *info,
793 bfd_boolean skip_zeroes)
794 {
795 objdump_print_value (vma, info, skip_zeroes);
796
797 if (sym == NULL)
798 {
799 bfd_vma secaddr;
800
801 (*info->fprintf_func) (info->stream, " <%s",
802 bfd_get_section_name (abfd, sec));
803 secaddr = bfd_get_section_vma (abfd, sec);
804 if (vma < secaddr)
805 {
806 (*info->fprintf_func) (info->stream, "-0x");
807 objdump_print_value (secaddr - vma, info, TRUE);
808 }
809 else if (vma > secaddr)
810 {
811 (*info->fprintf_func) (info->stream, "+0x");
812 objdump_print_value (vma - secaddr, info, TRUE);
813 }
814 (*info->fprintf_func) (info->stream, ">");
815 }
816 else
817 {
818 (*info->fprintf_func) (info->stream, " <");
819 objdump_print_symname (abfd, info, sym);
820 if (bfd_asymbol_value (sym) > vma)
821 {
822 (*info->fprintf_func) (info->stream, "-0x");
823 objdump_print_value (bfd_asymbol_value (sym) - vma, info, TRUE);
824 }
825 else if (vma > bfd_asymbol_value (sym))
826 {
827 (*info->fprintf_func) (info->stream, "+0x");
828 objdump_print_value (vma - bfd_asymbol_value (sym), info, TRUE);
829 }
830 (*info->fprintf_func) (info->stream, ">");
831 }
832 }
833
834 /* Print an address (VMA), symbolically if possible.
835 If SKIP_ZEROES is TRUE, don't output leading zeroes. */
836
837 static void
838 objdump_print_addr (bfd_vma vma,
839 struct disassemble_info *info,
840 bfd_boolean skip_zeroes)
841 {
842 struct objdump_disasm_info *aux;
843 asymbol *sym;
844
845 if (sorted_symcount < 1)
846 {
847 (*info->fprintf_func) (info->stream, "0x");
848 objdump_print_value (vma, info, skip_zeroes);
849 return;
850 }
851
852 aux = (struct objdump_disasm_info *) info->application_data;
853 sym = find_symbol_for_address (vma, info, NULL);
854 objdump_print_addr_with_sym (aux->abfd, aux->sec, sym, vma, info,
855 skip_zeroes);
856 }
857
858 /* Print VMA to INFO. This function is passed to the disassembler
859 routine. */
860
861 static void
862 objdump_print_address (bfd_vma vma, struct disassemble_info *info)
863 {
864 objdump_print_addr (vma, info, ! prefix_addresses);
865 }
866
867 /* Determine of the given address has a symbol associated with it. */
868
869 static int
870 objdump_symbol_at_address (bfd_vma vma, struct disassemble_info * info)
871 {
872 asymbol * sym;
873
874 sym = find_symbol_for_address (vma, info, NULL);
875
876 return (sym != NULL && (bfd_asymbol_value (sym) == vma));
877 }
878
879 /* Hold the last function name and the last line number we displayed
880 in a disassembly. */
881
882 static char *prev_functionname;
883 static unsigned int prev_line;
884
885 /* We keep a list of all files that we have seen when doing a
886 disassembly with source, so that we know how much of the file to
887 display. This can be important for inlined functions. */
888
889 struct print_file_list
890 {
891 struct print_file_list *next;
892 const char *filename;
893 const char *modname;
894 unsigned int line;
895 FILE *f;
896 };
897
898 static struct print_file_list *print_files;
899
900 /* The number of preceding context lines to show when we start
901 displaying a file for the first time. */
902
903 #define SHOW_PRECEDING_CONTEXT_LINES (5)
904
905 /* Tries to open MODNAME, and if successful adds a node to print_files
906 linked list and returns that node. Returns NULL on failure. */
907
908 static struct print_file_list *
909 try_print_file_open (const char *origname, const char *modname)
910 {
911 struct print_file_list *p;
912 FILE *f;
913
914 f = fopen (modname, "r");
915 if (f == NULL)
916 return NULL;
917
918 if (print_files != NULL && print_files->f != NULL)
919 {
920 fclose (print_files->f);
921 print_files->f = NULL;
922 }
923
924 p = xmalloc (sizeof (struct print_file_list));
925 p->filename = origname;
926 p->modname = modname;
927 p->line = 0;
928 p->f = f;
929 p->next = print_files;
930 print_files = p;
931 return p;
932 }
933
934 /* If the the source file, as described in the symtab, is not found
935 try to locate it in one of the paths specified with -I
936 If found, add location to print_files linked list. */
937
938 static struct print_file_list *
939 update_source_path (const char *filename)
940 {
941 struct print_file_list *p;
942 const char *fname;
943 int i;
944
945 if (filename == NULL)
946 return NULL;
947
948 p = try_print_file_open (filename, filename);
949 if (p != NULL)
950 return p;
951
952 if (include_path_count == 0)
953 return NULL;
954
955 /* Get the name of the file. */
956 fname = strrchr (filename, '/');
957 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
958 {
959 /* We could have a mixed forward/back slash case. */
960 char *backslash = strrchr (filename, '\\');
961 if (fname == NULL || (backslash != NULL && backslash > fname))
962 fname = backslash;
963 if (fname == NULL && filename[0] != '\0' && filename[1] == ':')
964 fname = filename + 1;
965 }
966 #endif
967 if (fname == NULL)
968 fname = filename;
969 else
970 ++fname;
971
972 /* If file exists under a new path, we need to add it to the list
973 so that show_line knows about it. */
974 for (i = 0; i < include_path_count; i++)
975 {
976 char *modname = concat (include_paths[i], "/", fname, (const char *) 0);
977
978 p = try_print_file_open (filename, modname);
979 if (p)
980 return p;
981
982 free (modname);
983 }
984
985 return NULL;
986 }
987
988 /* Skip ahead to a given line in a file, optionally printing each
989 line. */
990
991 static void
992 skip_to_line (struct print_file_list *p, unsigned int line,
993 bfd_boolean show)
994 {
995 while (p->line < line)
996 {
997 char buf[100];
998
999 if (fgets (buf, sizeof buf, p->f) == NULL)
1000 {
1001 fclose (p->f);
1002 p->f = NULL;
1003 break;
1004 }
1005
1006 if (show)
1007 printf ("%s", buf);
1008
1009 if (strchr (buf, '\n') != NULL)
1010 ++p->line;
1011 }
1012 }
1013
1014 /* Show the line number, or the source line, in a disassembly
1015 listing. */
1016
1017 static void
1018 show_line (bfd *abfd, asection *section, bfd_vma addr_offset)
1019 {
1020 const char *filename;
1021 const char *functionname;
1022 unsigned int line;
1023
1024 if (! with_line_numbers && ! with_source_code)
1025 return;
1026
1027 if (! bfd_find_nearest_line (abfd, section, syms, addr_offset, &filename,
1028 &functionname, &line))
1029 return;
1030
1031 if (filename != NULL && *filename == '\0')
1032 filename = NULL;
1033 if (functionname != NULL && *functionname == '\0')
1034 functionname = NULL;
1035
1036 if (with_line_numbers)
1037 {
1038 if (functionname != NULL
1039 && (prev_functionname == NULL
1040 || strcmp (functionname, prev_functionname) != 0))
1041 printf ("%s():\n", functionname);
1042 if (line > 0 && line != prev_line)
1043 printf ("%s:%u\n", filename == NULL ? "???" : filename, line);
1044 }
1045
1046 if (with_source_code
1047 && filename != NULL
1048 && line > 0)
1049 {
1050 struct print_file_list **pp, *p;
1051
1052 for (pp = &print_files; *pp != NULL; pp = &(*pp)->next)
1053 if (strcmp ((*pp)->filename, filename) == 0)
1054 break;
1055 p = *pp;
1056
1057 if (p != NULL)
1058 {
1059 if (p != print_files)
1060 {
1061 int l;
1062
1063 /* We have reencountered a file name which we saw
1064 earlier. This implies that either we are dumping out
1065 code from an included file, or the same file was
1066 linked in more than once. There are two common cases
1067 of an included file: inline functions in a header
1068 file, and a bison or flex skeleton file. In the
1069 former case we want to just start printing (but we
1070 back up a few lines to give context); in the latter
1071 case we want to continue from where we left off. I
1072 can't think of a good way to distinguish the cases,
1073 so I used a heuristic based on the file name. */
1074 if (strcmp (p->filename + strlen (p->filename) - 2, ".h") != 0)
1075 l = p->line;
1076 else
1077 {
1078 l = line - SHOW_PRECEDING_CONTEXT_LINES;
1079 if (l < 0)
1080 l = 0;
1081 }
1082
1083 if (p->f == NULL)
1084 {
1085 p->f = fopen (p->modname, "r");
1086 p->line = 0;
1087 }
1088 if (p->f != NULL)
1089 skip_to_line (p, l, FALSE);
1090
1091 if (print_files->f != NULL)
1092 {
1093 fclose (print_files->f);
1094 print_files->f = NULL;
1095 }
1096 }
1097
1098 if (p->f != NULL)
1099 {
1100 skip_to_line (p, line, TRUE);
1101 *pp = p->next;
1102 p->next = print_files;
1103 print_files = p;
1104 }
1105 }
1106 else
1107 {
1108 p = update_source_path (filename);
1109
1110 if (p != NULL)
1111 {
1112 int l;
1113
1114 if (file_start_context)
1115 l = 0;
1116 else
1117 l = line - SHOW_PRECEDING_CONTEXT_LINES;
1118 if (l < 0)
1119 l = 0;
1120 skip_to_line (p, l, FALSE);
1121 if (p->f != NULL)
1122 skip_to_line (p, line, TRUE);
1123 }
1124 }
1125 }
1126
1127 if (functionname != NULL
1128 && (prev_functionname == NULL
1129 || strcmp (functionname, prev_functionname) != 0))
1130 {
1131 if (prev_functionname != NULL)
1132 free (prev_functionname);
1133 prev_functionname = xmalloc (strlen (functionname) + 1);
1134 strcpy (prev_functionname, functionname);
1135 }
1136
1137 if (line > 0 && line != prev_line)
1138 prev_line = line;
1139 }
1140
1141 /* Pseudo FILE object for strings. */
1142 typedef struct
1143 {
1144 char *buffer;
1145 size_t pos;
1146 size_t alloc;
1147 } SFILE;
1148
1149 /* sprintf to a "stream". */
1150
1151 static int
1152 objdump_sprintf (SFILE *f, const char *format, ...)
1153 {
1154 size_t n;
1155 va_list args;
1156
1157 while (1)
1158 {
1159 size_t space = f->alloc - f->pos;
1160
1161 va_start (args, format);
1162 n = vsnprintf (f->buffer + f->pos, space, format, args);
1163 va_end (args);
1164
1165 if (space > n)
1166 break;
1167
1168 f->alloc = (f->alloc + n) * 2;
1169 f->buffer = xrealloc (f->buffer, f->alloc);
1170 }
1171 f->pos += n;
1172
1173 return n;
1174 }
1175
1176 /* Returns TRUE if the specified section should be dumped. */
1177
1178 static bfd_boolean
1179 process_section_p (asection * section)
1180 {
1181 size_t i;
1182
1183 if (only == NULL)
1184 return TRUE;
1185
1186 for (i = 0; i < only_used; i++)
1187 if (strcmp (only [i], section->name) == 0)
1188 return TRUE;
1189
1190 return FALSE;
1191 }
1192
1193
1194 /* The number of zeroes we want to see before we start skipping them.
1195 The number is arbitrarily chosen. */
1196
1197 #ifndef SKIP_ZEROES
1198 #define SKIP_ZEROES (8)
1199 #endif
1200
1201 /* The number of zeroes to skip at the end of a section. If the
1202 number of zeroes at the end is between SKIP_ZEROES_AT_END and
1203 SKIP_ZEROES, they will be disassembled. If there are fewer than
1204 SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic
1205 attempt to avoid disassembling zeroes inserted by section
1206 alignment. */
1207
1208 #ifndef SKIP_ZEROES_AT_END
1209 #define SKIP_ZEROES_AT_END (3)
1210 #endif
1211
1212 /* Disassemble some data in memory between given values. */
1213
1214 static void
1215 disassemble_bytes (struct disassemble_info * info,
1216 disassembler_ftype disassemble_fn,
1217 bfd_boolean insns,
1218 bfd_byte * data,
1219 bfd_vma start_offset,
1220 bfd_vma stop_offset,
1221 bfd_vma rel_offset,
1222 arelent *** relppp,
1223 arelent ** relppend)
1224 {
1225 struct objdump_disasm_info *aux;
1226 asection *section;
1227 int octets_per_line;
1228 bfd_boolean done_dot;
1229 int skip_addr_chars;
1230 bfd_vma addr_offset;
1231 int opb = info->octets_per_byte;
1232 SFILE sfile;
1233
1234 aux = (struct objdump_disasm_info *) info->application_data;
1235 section = aux->sec;
1236
1237 sfile.alloc = 120;
1238 sfile.buffer = xmalloc (sfile.alloc);
1239 sfile.pos = 0;
1240
1241 if (insns)
1242 octets_per_line = 4;
1243 else
1244 octets_per_line = 16;
1245
1246 /* Figure out how many characters to skip at the start of an
1247 address, to make the disassembly look nicer. We discard leading
1248 zeroes in chunks of 4, ensuring that there is always a leading
1249 zero remaining. */
1250 skip_addr_chars = 0;
1251 if (! prefix_addresses)
1252 {
1253 char buf[30];
1254 char *s;
1255
1256 bfd_sprintf_vma
1257 (aux->abfd, buf,
1258 (section->vma
1259 + bfd_section_size (section->owner, section) / opb));
1260 s = buf;
1261 while (s[0] == '0' && s[1] == '0' && s[2] == '0' && s[3] == '0'
1262 && s[4] == '0')
1263 {
1264 skip_addr_chars += 4;
1265 s += 4;
1266 }
1267 }
1268
1269 info->insn_info_valid = 0;
1270
1271 done_dot = FALSE;
1272 addr_offset = start_offset;
1273 while (addr_offset < stop_offset)
1274 {
1275 bfd_vma z;
1276 int octets = 0;
1277 bfd_boolean need_nl = FALSE;
1278
1279 /* If we see more than SKIP_ZEROES octets of zeroes, we just
1280 print `...'. */
1281 for (z = addr_offset * opb; z < stop_offset * opb; z++)
1282 if (data[z] != 0)
1283 break;
1284 if (! disassemble_zeroes
1285 && (info->insn_info_valid == 0
1286 || info->branch_delay_insns == 0)
1287 && (z - addr_offset * opb >= SKIP_ZEROES
1288 || (z == stop_offset * opb &&
1289 z - addr_offset * opb < SKIP_ZEROES_AT_END)))
1290 {
1291 printf ("\t...\n");
1292
1293 /* If there are more nonzero octets to follow, we only skip
1294 zeroes in multiples of 4, to try to avoid running over
1295 the start of an instruction which happens to start with
1296 zero. */
1297 if (z != stop_offset * opb)
1298 z = addr_offset * opb + ((z - addr_offset * opb) &~ 3);
1299
1300 octets = z - addr_offset * opb;
1301 }
1302 else
1303 {
1304 char buf[50];
1305 int bpc = 0;
1306 int pb = 0;
1307
1308 done_dot = FALSE;
1309
1310 if (with_line_numbers || with_source_code)
1311 /* The line number tables will refer to unadjusted
1312 section VMAs, so we must undo any VMA modifications
1313 when calling show_line. */
1314 show_line (aux->abfd, section, addr_offset - adjust_section_vma);
1315
1316 if (! prefix_addresses)
1317 {
1318 char *s;
1319
1320 bfd_sprintf_vma (aux->abfd, buf, section->vma + addr_offset);
1321 for (s = buf + skip_addr_chars; *s == '0'; s++)
1322 *s = ' ';
1323 if (*s == '\0')
1324 *--s = '0';
1325 printf ("%s:\t", buf + skip_addr_chars);
1326 }
1327 else
1328 {
1329 aux->require_sec = TRUE;
1330 objdump_print_address (section->vma + addr_offset, info);
1331 aux->require_sec = FALSE;
1332 putchar (' ');
1333 }
1334
1335 if (insns)
1336 {
1337 sfile.pos = 0;
1338 info->fprintf_func = (fprintf_ftype) objdump_sprintf;
1339 info->stream = (FILE *) &sfile;
1340 info->bytes_per_line = 0;
1341 info->bytes_per_chunk = 0;
1342
1343 #ifdef DISASSEMBLER_NEEDS_RELOCS
1344 /* FIXME: This is wrong. It tests the number of octets
1345 in the last instruction, not the current one. */
1346 if (*relppp < relppend
1347 && (**relppp)->address >= rel_offset + addr_offset
1348 && ((**relppp)->address
1349 < rel_offset + addr_offset + octets / opb))
1350 info->flags = INSN_HAS_RELOC;
1351 else
1352 #endif
1353 info->flags = 0;
1354
1355 octets = (*disassemble_fn) (section->vma + addr_offset, info);
1356 info->fprintf_func = (fprintf_ftype) fprintf;
1357 info->stream = stdout;
1358 if (info->bytes_per_line != 0)
1359 octets_per_line = info->bytes_per_line;
1360 if (octets < 0)
1361 {
1362 if (sfile.pos)
1363 printf ("%s\n", sfile.buffer);
1364 break;
1365 }
1366 }
1367 else
1368 {
1369 bfd_vma j;
1370
1371 octets = octets_per_line;
1372 if (addr_offset + octets / opb > stop_offset)
1373 octets = (stop_offset - addr_offset) * opb;
1374
1375 for (j = addr_offset * opb; j < addr_offset * opb + octets; ++j)
1376 {
1377 if (ISPRINT (data[j]))
1378 buf[j - addr_offset * opb] = data[j];
1379 else
1380 buf[j - addr_offset * opb] = '.';
1381 }
1382 buf[j - addr_offset * opb] = '\0';
1383 }
1384
1385 if (prefix_addresses
1386 ? show_raw_insn > 0
1387 : show_raw_insn >= 0)
1388 {
1389 bfd_vma j;
1390
1391 /* If ! prefix_addresses and ! wide_output, we print
1392 octets_per_line octets per line. */
1393 pb = octets;
1394 if (pb > octets_per_line && ! prefix_addresses && ! wide_output)
1395 pb = octets_per_line;
1396
1397 if (info->bytes_per_chunk)
1398 bpc = info->bytes_per_chunk;
1399 else
1400 bpc = 1;
1401
1402 for (j = addr_offset * opb; j < addr_offset * opb + pb; j += bpc)
1403 {
1404 int k;
1405 if (bpc > 1 && info->display_endian == BFD_ENDIAN_LITTLE)
1406 {
1407 for (k = bpc - 1; k >= 0; k--)
1408 printf ("%02x", (unsigned) data[j + k]);
1409 putchar (' ');
1410 }
1411 else
1412 {
1413 for (k = 0; k < bpc; k++)
1414 printf ("%02x", (unsigned) data[j + k]);
1415 putchar (' ');
1416 }
1417 }
1418
1419 for (; pb < octets_per_line; pb += bpc)
1420 {
1421 int k;
1422
1423 for (k = 0; k < bpc; k++)
1424 printf (" ");
1425 putchar (' ');
1426 }
1427
1428 /* Separate raw data from instruction by extra space. */
1429 if (insns)
1430 putchar ('\t');
1431 else
1432 printf (" ");
1433 }
1434
1435 if (! insns)
1436 printf ("%s", buf);
1437 else if (sfile.pos)
1438 printf ("%s", sfile.buffer);
1439
1440 if (prefix_addresses
1441 ? show_raw_insn > 0
1442 : show_raw_insn >= 0)
1443 {
1444 while (pb < octets)
1445 {
1446 bfd_vma j;
1447 char *s;
1448
1449 putchar ('\n');
1450 j = addr_offset * opb + pb;
1451
1452 bfd_sprintf_vma (aux->abfd, buf, section->vma + j / opb);
1453 for (s = buf + skip_addr_chars; *s == '0'; s++)
1454 *s = ' ';
1455 if (*s == '\0')
1456 *--s = '0';
1457 printf ("%s:\t", buf + skip_addr_chars);
1458
1459 pb += octets_per_line;
1460 if (pb > octets)
1461 pb = octets;
1462 for (; j < addr_offset * opb + pb; j += bpc)
1463 {
1464 int k;
1465
1466 if (bpc > 1 && info->display_endian == BFD_ENDIAN_LITTLE)
1467 {
1468 for (k = bpc - 1; k >= 0; k--)
1469 printf ("%02x", (unsigned) data[j + k]);
1470 putchar (' ');
1471 }
1472 else
1473 {
1474 for (k = 0; k < bpc; k++)
1475 printf ("%02x", (unsigned) data[j + k]);
1476 putchar (' ');
1477 }
1478 }
1479 }
1480 }
1481
1482 if (!wide_output)
1483 putchar ('\n');
1484 else
1485 need_nl = TRUE;
1486 }
1487
1488 while ((*relppp) < relppend
1489 && (**relppp)->address < rel_offset + addr_offset + octets / opb)
1490 {
1491 if (dump_reloc_info || dump_dynamic_reloc_info)
1492 {
1493 arelent *q;
1494
1495 q = **relppp;
1496
1497 if (wide_output)
1498 putchar ('\t');
1499 else
1500 printf ("\t\t\t");
1501
1502 objdump_print_value (section->vma - rel_offset + q->address,
1503 info, TRUE);
1504
1505 printf (": %s\t", q->howto->name);
1506
1507 if (q->sym_ptr_ptr == NULL || *q->sym_ptr_ptr == NULL)
1508 printf ("*unknown*");
1509 else
1510 {
1511 const char *sym_name;
1512
1513 sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
1514 if (sym_name != NULL && *sym_name != '\0')
1515 objdump_print_symname (aux->abfd, info, *q->sym_ptr_ptr);
1516 else
1517 {
1518 asection *sym_sec;
1519
1520 sym_sec = bfd_get_section (*q->sym_ptr_ptr);
1521 sym_name = bfd_get_section_name (aux->abfd, sym_sec);
1522 if (sym_name == NULL || *sym_name == '\0')
1523 sym_name = "*unknown*";
1524 printf ("%s", sym_name);
1525 }
1526 }
1527
1528 if (q->addend)
1529 {
1530 printf ("+0x");
1531 objdump_print_value (q->addend, info, TRUE);
1532 }
1533
1534 printf ("\n");
1535 need_nl = FALSE;
1536 }
1537 ++(*relppp);
1538 }
1539
1540 if (need_nl)
1541 printf ("\n");
1542
1543 addr_offset += octets / opb;
1544 }
1545
1546 free (sfile.buffer);
1547 }
1548
1549 static void
1550 disassemble_section (bfd *abfd, asection *section, void *info)
1551 {
1552 struct disassemble_info * pinfo = (struct disassemble_info *) info;
1553 struct objdump_disasm_info * paux;
1554 unsigned int opb = pinfo->octets_per_byte;
1555 bfd_byte * data = NULL;
1556 bfd_size_type datasize = 0;
1557 arelent ** rel_pp = NULL;
1558 arelent ** rel_ppstart = NULL;
1559 arelent ** rel_ppend;
1560 unsigned long stop_offset;
1561 asymbol * sym = NULL;
1562 long place = 0;
1563 long rel_count;
1564 bfd_vma rel_offset;
1565 unsigned long addr_offset;
1566
1567 /* Sections that do not contain machine
1568 code are not normally disassembled. */
1569 if (! disassemble_all
1570 && only == NULL
1571 && (section->flags & SEC_CODE) == 0)
1572 return;
1573
1574 if (! process_section_p (section))
1575 return;
1576
1577 datasize = bfd_get_section_size_before_reloc (section);
1578 if (datasize == 0)
1579 return;
1580
1581 /* Decide which set of relocs to use. Load them if necessary. */
1582 paux = (struct objdump_disasm_info *) pinfo->application_data;
1583 if (paux->dynrelbuf)
1584 {
1585 rel_pp = paux->dynrelbuf;
1586 rel_count = paux->dynrelcount;
1587 /* Dynamic reloc addresses are absolute, non-dynamic are section
1588 relative. REL_OFFSET specifies the reloc address corresponding
1589 to the start of this section. */
1590 rel_offset = section->vma;
1591 }
1592 else
1593 {
1594 rel_count = 0;
1595 rel_pp = NULL;
1596 rel_offset = 0;
1597
1598 if ((section->flags & SEC_RELOC) != 0
1599 #ifndef DISASSEMBLER_NEEDS_RELOCS
1600 && dump_reloc_info
1601 #endif
1602 )
1603 {
1604 long relsize;
1605
1606 relsize = bfd_get_reloc_upper_bound (abfd, section);
1607 if (relsize < 0)
1608 bfd_fatal (bfd_get_filename (abfd));
1609
1610 if (relsize > 0)
1611 {
1612 rel_ppstart = rel_pp = xmalloc (relsize);
1613 rel_count = bfd_canonicalize_reloc (abfd, section, rel_pp, syms);
1614 if (rel_count < 0)
1615 bfd_fatal (bfd_get_filename (abfd));
1616
1617 /* Sort the relocs by address. */
1618 qsort (rel_pp, rel_count, sizeof (arelent *), compare_relocs);
1619 }
1620 }
1621
1622 }
1623 rel_ppend = rel_pp + rel_count;
1624
1625 data = xmalloc (datasize);
1626
1627 bfd_get_section_contents (abfd, section, data, 0, datasize);
1628
1629 paux->sec = section;
1630 pinfo->buffer = data;
1631 pinfo->buffer_vma = section->vma;
1632 pinfo->buffer_length = datasize;
1633 pinfo->section = section;
1634
1635 if (start_address == (bfd_vma) -1
1636 || start_address < pinfo->buffer_vma)
1637 addr_offset = 0;
1638 else
1639 addr_offset = start_address - pinfo->buffer_vma;
1640
1641 if (stop_address == (bfd_vma) -1)
1642 stop_offset = datasize / opb;
1643 else
1644 {
1645 if (stop_address < pinfo->buffer_vma)
1646 stop_offset = 0;
1647 else
1648 stop_offset = stop_address - pinfo->buffer_vma;
1649 if (stop_offset > pinfo->buffer_length / opb)
1650 stop_offset = pinfo->buffer_length / opb;
1651 }
1652
1653 /* Skip over the relocs belonging to addresses below the
1654 start address. */
1655 while (rel_pp < rel_ppend
1656 && (*rel_pp)->address < rel_offset + addr_offset)
1657 ++rel_pp;
1658
1659 printf (_("Disassembly of section %s:\n"), section->name);
1660
1661 /* Find the nearest symbol forwards from our current position. */
1662 paux->require_sec = TRUE;
1663 sym = find_symbol_for_address (section->vma + addr_offset, info, &place);
1664 paux->require_sec = FALSE;
1665
1666 /* Disassemble a block of instructions up to the address associated with
1667 the symbol we have just found. Then print the symbol and find the
1668 next symbol on. Repeat until we have disassembled the entire section
1669 or we have reached the end of the address range we are interested in. */
1670 while (addr_offset < stop_offset)
1671 {
1672 bfd_vma addr;
1673 asymbol *nextsym;
1674 unsigned long nextstop_offset;
1675 bfd_boolean insns;
1676
1677 addr = section->vma + addr_offset;
1678
1679 if (sym != NULL && bfd_asymbol_value (sym) <= addr)
1680 {
1681 int x;
1682
1683 for (x = place;
1684 (x < sorted_symcount
1685 && (bfd_asymbol_value (sorted_syms[x]) <= addr));
1686 ++x)
1687 continue;
1688
1689 pinfo->symbols = sorted_syms + place;
1690 pinfo->num_symbols = x - place;
1691 }
1692 else
1693 {
1694 pinfo->symbols = NULL;
1695 pinfo->num_symbols = 0;
1696 }
1697
1698 if (! prefix_addresses)
1699 {
1700 pinfo->fprintf_func (pinfo->stream, "\n");
1701 objdump_print_addr_with_sym (abfd, section, sym, addr,
1702 pinfo, FALSE);
1703 pinfo->fprintf_func (pinfo->stream, ":\n");
1704 }
1705
1706 if (sym != NULL && bfd_asymbol_value (sym) > addr)
1707 nextsym = sym;
1708 else if (sym == NULL)
1709 nextsym = NULL;
1710 else
1711 {
1712 #define is_valid_next_sym(SYM) \
1713 ((SYM)->section == section \
1714 && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
1715 && pinfo->symbol_is_valid (SYM, pinfo))
1716
1717 /* Search forward for the next appropriate symbol in
1718 SECTION. Note that all the symbols are sorted
1719 together into one big array, and that some sections
1720 may have overlapping addresses. */
1721 while (place < sorted_symcount
1722 && ! is_valid_next_sym (sorted_syms [place]))
1723 ++place;
1724
1725 if (place >= sorted_symcount)
1726 nextsym = NULL;
1727 else
1728 nextsym = sorted_syms[place];
1729 }
1730
1731 if (sym != NULL && bfd_asymbol_value (sym) > addr)
1732 nextstop_offset = bfd_asymbol_value (sym) - section->vma;
1733 else if (nextsym == NULL)
1734 nextstop_offset = stop_offset;
1735 else
1736 nextstop_offset = bfd_asymbol_value (nextsym) - section->vma;
1737
1738 if (nextstop_offset > stop_offset)
1739 nextstop_offset = stop_offset;
1740
1741 /* If a symbol is explicitly marked as being an object
1742 rather than a function, just dump the bytes without
1743 disassembling them. */
1744 if (disassemble_all
1745 || sym == NULL
1746 || bfd_asymbol_value (sym) > addr
1747 || ((sym->flags & BSF_OBJECT) == 0
1748 && (strstr (bfd_asymbol_name (sym), "gnu_compiled")
1749 == NULL)
1750 && (strstr (bfd_asymbol_name (sym), "gcc2_compiled")
1751 == NULL))
1752 || (sym->flags & BSF_FUNCTION) != 0)
1753 insns = TRUE;
1754 else
1755 insns = FALSE;
1756
1757 disassemble_bytes (pinfo, paux->disassemble_fn, insns, data,
1758 addr_offset, nextstop_offset,
1759 rel_offset, &rel_pp, rel_ppend);
1760
1761 addr_offset = nextstop_offset;
1762 sym = nextsym;
1763 }
1764
1765 free (data);
1766
1767 if (rel_ppstart != NULL)
1768 free (rel_ppstart);
1769 }
1770
1771 /* Disassemble the contents of an object file. */
1772
1773 static void
1774 disassemble_data (bfd *abfd)
1775 {
1776 struct disassemble_info disasm_info;
1777 struct objdump_disasm_info aux;
1778
1779 print_files = NULL;
1780 prev_functionname = NULL;
1781 prev_line = -1;
1782
1783 /* We make a copy of syms to sort. We don't want to sort syms
1784 because that will screw up the relocs. */
1785 sorted_syms = xmalloc (symcount * sizeof (asymbol *));
1786 memcpy (sorted_syms, syms, symcount * sizeof (asymbol *));
1787
1788 sorted_symcount = remove_useless_symbols (sorted_syms, symcount);
1789
1790 /* Sort the symbols into section and symbol order. */
1791 qsort (sorted_syms, sorted_symcount, sizeof (asymbol *), compare_symbols);
1792
1793 init_disassemble_info (&disasm_info, stdout, (fprintf_ftype) fprintf);
1794
1795 disasm_info.application_data = (void *) &aux;
1796 aux.abfd = abfd;
1797 aux.require_sec = FALSE;
1798 aux.dynrelbuf = NULL;
1799 aux.dynrelcount = 0;
1800
1801 disasm_info.print_address_func = objdump_print_address;
1802 disasm_info.symbol_at_address_func = objdump_symbol_at_address;
1803
1804 if (machine != NULL)
1805 {
1806 const bfd_arch_info_type *info = bfd_scan_arch (machine);
1807
1808 if (info == NULL)
1809 fatal (_("Can't use supplied machine %s"), machine);
1810
1811 abfd->arch_info = info;
1812 }
1813
1814 if (endian != BFD_ENDIAN_UNKNOWN)
1815 {
1816 struct bfd_target *xvec;
1817
1818 xvec = xmalloc (sizeof (struct bfd_target));
1819 memcpy (xvec, abfd->xvec, sizeof (struct bfd_target));
1820 xvec->byteorder = endian;
1821 abfd->xvec = xvec;
1822 }
1823
1824 /* Use libopcodes to locate a suitable disassembler. */
1825 aux.disassemble_fn = disassembler (abfd);
1826 if (!aux.disassemble_fn)
1827 {
1828 non_fatal (_("Can't disassemble for architecture %s\n"),
1829 bfd_printable_arch_mach (bfd_get_arch (abfd), 0));
1830 exit_status = 1;
1831 return;
1832 }
1833
1834 disasm_info.flavour = bfd_get_flavour (abfd);
1835 disasm_info.arch = bfd_get_arch (abfd);
1836 disasm_info.mach = bfd_get_mach (abfd);
1837 disasm_info.disassembler_options = disassembler_options;
1838 disasm_info.octets_per_byte = bfd_octets_per_byte (abfd);
1839
1840 if (bfd_big_endian (abfd))
1841 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_BIG;
1842 else if (bfd_little_endian (abfd))
1843 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_LITTLE;
1844 else
1845 /* ??? Aborting here seems too drastic. We could default to big or little
1846 instead. */
1847 disasm_info.endian = BFD_ENDIAN_UNKNOWN;
1848
1849 /* Allow the target to customize the info structure. */
1850 disassemble_init_for_target (& disasm_info);
1851
1852 /* Pre-load the dynamic relocs if we are going
1853 to be dumping them along with the disassembly. */
1854 if (dump_dynamic_reloc_info)
1855 {
1856 long relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
1857
1858 if (relsize < 0)
1859 bfd_fatal (bfd_get_filename (abfd));
1860
1861 if (relsize > 0)
1862 {
1863 aux.dynrelbuf = xmalloc (relsize);
1864 aux.dynrelcount = bfd_canonicalize_dynamic_reloc (abfd,
1865 aux.dynrelbuf,
1866 dynsyms);
1867 if (aux.dynrelcount < 0)
1868 bfd_fatal (bfd_get_filename (abfd));
1869
1870 /* Sort the relocs by address. */
1871 qsort (aux.dynrelbuf, aux.dynrelcount, sizeof (arelent *),
1872 compare_relocs);
1873 }
1874 }
1875
1876 bfd_map_over_sections (abfd, disassemble_section, & disasm_info);
1877
1878 if (aux.dynrelbuf != NULL)
1879 free (aux.dynrelbuf);
1880 free (sorted_syms);
1881 }
1882 \f
1883 /* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
1884 it. Return NULL on failure. */
1885
1886 static char *
1887 read_section_stabs (bfd *abfd, const char *sect_name, bfd_size_type *size_ptr)
1888 {
1889 asection *stabsect;
1890 bfd_size_type size;
1891 char *contents;
1892
1893 stabsect = bfd_get_section_by_name (abfd, sect_name);
1894 if (stabsect == NULL)
1895 {
1896 printf (_("No %s section present\n\n"), sect_name);
1897 return FALSE;
1898 }
1899
1900 size = bfd_section_size (abfd, stabsect);
1901 contents = xmalloc (size);
1902
1903 if (! bfd_get_section_contents (abfd, stabsect, contents, 0, size))
1904 {
1905 non_fatal (_("Reading %s section of %s failed: %s"),
1906 sect_name, bfd_get_filename (abfd),
1907 bfd_errmsg (bfd_get_error ()));
1908 free (contents);
1909 exit_status = 1;
1910 return NULL;
1911 }
1912
1913 *size_ptr = size;
1914
1915 return contents;
1916 }
1917
1918 /* Stabs entries use a 12 byte format:
1919 4 byte string table index
1920 1 byte stab type
1921 1 byte stab other field
1922 2 byte stab desc field
1923 4 byte stab value
1924 FIXME: This will have to change for a 64 bit object format. */
1925
1926 #define STRDXOFF (0)
1927 #define TYPEOFF (4)
1928 #define OTHEROFF (5)
1929 #define DESCOFF (6)
1930 #define VALOFF (8)
1931 #define STABSIZE (12)
1932
1933 /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
1934 using string table section STRSECT_NAME (in `strtab'). */
1935
1936 static void
1937 print_section_stabs (bfd *abfd,
1938 const char *stabsect_name,
1939 unsigned *string_offset_ptr)
1940 {
1941 int i;
1942 unsigned file_string_table_offset = 0;
1943 unsigned next_file_string_table_offset = *string_offset_ptr;
1944 bfd_byte *stabp, *stabs_end;
1945
1946 stabp = stabs;
1947 stabs_end = stabp + stab_size;
1948
1949 printf (_("Contents of %s section:\n\n"), stabsect_name);
1950 printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
1951
1952 /* Loop through all symbols and print them.
1953
1954 We start the index at -1 because there is a dummy symbol on
1955 the front of stabs-in-{coff,elf} sections that supplies sizes. */
1956 for (i = -1; stabp < stabs_end; stabp += STABSIZE, i++)
1957 {
1958 const char *name;
1959 unsigned long strx;
1960 unsigned char type, other;
1961 unsigned short desc;
1962 bfd_vma value;
1963
1964 strx = bfd_h_get_32 (abfd, stabp + STRDXOFF);
1965 type = bfd_h_get_8 (abfd, stabp + TYPEOFF);
1966 other = bfd_h_get_8 (abfd, stabp + OTHEROFF);
1967 desc = bfd_h_get_16 (abfd, stabp + DESCOFF);
1968 value = bfd_h_get_32 (abfd, stabp + VALOFF);
1969
1970 printf ("\n%-6d ", i);
1971 /* Either print the stab name, or, if unnamed, print its number
1972 again (makes consistent formatting for tools like awk). */
1973 name = bfd_get_stab_name (type);
1974 if (name != NULL)
1975 printf ("%-6s", name);
1976 else if (type == N_UNDF)
1977 printf ("HdrSym");
1978 else
1979 printf ("%-6d", type);
1980 printf (" %-6d %-6d ", other, desc);
1981 bfd_printf_vma (abfd, value);
1982 printf (" %-6lu", strx);
1983
1984 /* Symbols with type == 0 (N_UNDF) specify the length of the
1985 string table associated with this file. We use that info
1986 to know how to relocate the *next* file's string table indices. */
1987 if (type == N_UNDF)
1988 {
1989 file_string_table_offset = next_file_string_table_offset;
1990 next_file_string_table_offset += value;
1991 }
1992 else
1993 {
1994 /* Using the (possibly updated) string table offset, print the
1995 string (if any) associated with this symbol. */
1996 if ((strx + file_string_table_offset) < stabstr_size)
1997 printf (" %s", &strtab[strx + file_string_table_offset]);
1998 else
1999 printf (" *");
2000 }
2001 }
2002 printf ("\n\n");
2003 *string_offset_ptr = next_file_string_table_offset;
2004 }
2005
2006 typedef struct
2007 {
2008 const char * section_name;
2009 const char * string_section_name;
2010 unsigned string_offset;
2011 }
2012 stab_section_names;
2013
2014 static void
2015 find_stabs_section (bfd *abfd, asection *section, void *names)
2016 {
2017 int len;
2018 stab_section_names * sought = (stab_section_names *) names;
2019
2020 /* Check for section names for which stabsect_name is a prefix, to
2021 handle .stab.N, etc. */
2022 len = strlen (sought->section_name);
2023
2024 /* If the prefix matches, and the files section name ends with a
2025 nul or a digit, then we match. I.e., we want either an exact
2026 match or a section followed by a number. */
2027 if (strncmp (sought->section_name, section->name, len) == 0
2028 && (section->name[len] == 0
2029 || (section->name[len] == '.' && ISDIGIT (section->name[len + 1]))))
2030 {
2031 if (strtab == NULL)
2032 strtab = read_section_stabs (abfd, sought->string_section_name,
2033 &stabstr_size);
2034
2035 if (strtab)
2036 {
2037 stabs = read_section_stabs (abfd, section->name, &stab_size);
2038 if (stabs)
2039 print_section_stabs (abfd, section->name, &sought->string_offset);
2040 }
2041 }
2042 }
2043
2044 static void
2045 dump_stabs_section (bfd *abfd, char *stabsect_name, char *strsect_name)
2046 {
2047 stab_section_names s;
2048
2049 s.section_name = stabsect_name;
2050 s.string_section_name = strsect_name;
2051 s.string_offset = 0;
2052
2053 bfd_map_over_sections (abfd, find_stabs_section, & s);
2054
2055 free (strtab);
2056 strtab = NULL;
2057 }
2058
2059 /* Dump the any sections containing stabs debugging information. */
2060
2061 static void
2062 dump_stabs (bfd *abfd)
2063 {
2064 dump_stabs_section (abfd, ".stab", ".stabstr");
2065 dump_stabs_section (abfd, ".stab.excl", ".stab.exclstr");
2066 dump_stabs_section (abfd, ".stab.index", ".stab.indexstr");
2067 dump_stabs_section (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
2068 }
2069 \f
2070 static void
2071 dump_bfd_header (bfd *abfd)
2072 {
2073 char *comma = "";
2074
2075 printf (_("architecture: %s, "),
2076 bfd_printable_arch_mach (bfd_get_arch (abfd),
2077 bfd_get_mach (abfd)));
2078 printf (_("flags 0x%08x:\n"), abfd->flags);
2079
2080 #define PF(x, y) if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
2081 PF (HAS_RELOC, "HAS_RELOC");
2082 PF (EXEC_P, "EXEC_P");
2083 PF (HAS_LINENO, "HAS_LINENO");
2084 PF (HAS_DEBUG, "HAS_DEBUG");
2085 PF (HAS_SYMS, "HAS_SYMS");
2086 PF (HAS_LOCALS, "HAS_LOCALS");
2087 PF (DYNAMIC, "DYNAMIC");
2088 PF (WP_TEXT, "WP_TEXT");
2089 PF (D_PAGED, "D_PAGED");
2090 PF (BFD_IS_RELAXABLE, "BFD_IS_RELAXABLE");
2091 PF (HAS_LOAD_PAGE, "HAS_LOAD_PAGE");
2092 printf (_("\nstart address 0x"));
2093 bfd_printf_vma (abfd, abfd->start_address);
2094 printf ("\n");
2095 }
2096
2097 \f
2098 static void
2099 dump_bfd_private_header (bfd *abfd)
2100 {
2101 bfd_print_private_bfd_data (abfd, stdout);
2102 }
2103
2104 \f
2105 /* Display a section in hexadecimal format with associated characters.
2106 Each line prefixed by the zero padded address. */
2107
2108 static void
2109 dump_section (bfd *abfd, asection *section, void *dummy ATTRIBUTE_UNUSED)
2110 {
2111 bfd_byte *data = 0;
2112 bfd_size_type datasize;
2113 bfd_size_type addr_offset;
2114 bfd_size_type start_offset;
2115 bfd_size_type stop_offset;
2116 unsigned int opb = bfd_octets_per_byte (abfd);
2117 /* Bytes per line. */
2118 const int onaline = 16;
2119 char buf[64];
2120 int count;
2121 int width;
2122
2123 if ((section->flags & SEC_HAS_CONTENTS) == 0)
2124 return;
2125
2126 if (! process_section_p (section))
2127 return;
2128
2129 if ((datasize = bfd_section_size (abfd, section)) == 0)
2130 return;
2131
2132 printf (_("Contents of section %s:\n"), section->name);
2133
2134 data = xmalloc (datasize);
2135
2136 bfd_get_section_contents (abfd, section, data, 0, datasize);
2137
2138 /* Compute the address range to display. */
2139 if (start_address == (bfd_vma) -1
2140 || start_address < section->vma)
2141 start_offset = 0;
2142 else
2143 start_offset = start_address - section->vma;
2144
2145 if (stop_address == (bfd_vma) -1)
2146 stop_offset = datasize / opb;
2147 else
2148 {
2149 if (stop_address < section->vma)
2150 stop_offset = 0;
2151 else
2152 stop_offset = stop_address - section->vma;
2153
2154 if (stop_offset > datasize / opb)
2155 stop_offset = datasize / opb;
2156 }
2157
2158 width = 4;
2159
2160 bfd_sprintf_vma (abfd, buf, start_offset + section->vma);
2161 if (strlen (buf) >= sizeof (buf))
2162 abort ();
2163
2164 count = 0;
2165 while (buf[count] == '0' && buf[count+1] != '\0')
2166 count++;
2167 count = strlen (buf) - count;
2168 if (count > width)
2169 width = count;
2170
2171 bfd_sprintf_vma (abfd, buf, stop_offset + section->vma - 1);
2172 if (strlen (buf) >= sizeof (buf))
2173 abort ();
2174
2175 count = 0;
2176 while (buf[count] == '0' && buf[count+1] != '\0')
2177 count++;
2178 count = strlen (buf) - count;
2179 if (count > width)
2180 width = count;
2181
2182 for (addr_offset = start_offset;
2183 addr_offset < stop_offset; addr_offset += onaline / opb)
2184 {
2185 bfd_size_type j;
2186
2187 bfd_sprintf_vma (abfd, buf, (addr_offset + section->vma));
2188 count = strlen (buf);
2189 if ((size_t) count >= sizeof (buf))
2190 abort ();
2191
2192 putchar (' ');
2193 while (count < width)
2194 {
2195 putchar ('0');
2196 count++;
2197 }
2198 fputs (buf + count - width, stdout);
2199 putchar (' ');
2200
2201 for (j = addr_offset * opb;
2202 j < addr_offset * opb + onaline; j++)
2203 {
2204 if (j < stop_offset * opb)
2205 printf ("%02x", (unsigned) (data[j]));
2206 else
2207 printf (" ");
2208 if ((j & 3) == 3)
2209 printf (" ");
2210 }
2211
2212 printf (" ");
2213 for (j = addr_offset * opb;
2214 j < addr_offset * opb + onaline; j++)
2215 {
2216 if (j >= stop_offset * opb)
2217 printf (" ");
2218 else
2219 printf ("%c", ISPRINT (data[j]) ? data[j] : '.');
2220 }
2221 putchar ('\n');
2222 }
2223 free (data);
2224 }
2225
2226 /* Actually display the various requested regions. */
2227
2228 static void
2229 dump_data (bfd *abfd)
2230 {
2231 bfd_map_over_sections (abfd, dump_section, NULL);
2232 }
2233
2234 /* Should perhaps share code and display with nm? */
2235
2236 static void
2237 dump_symbols (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean dynamic)
2238 {
2239 asymbol **current;
2240 long max;
2241 long count;
2242
2243 if (dynamic)
2244 {
2245 current = dynsyms;
2246 max = dynsymcount;
2247 printf ("DYNAMIC SYMBOL TABLE:\n");
2248 }
2249 else
2250 {
2251 current = syms;
2252 max = symcount;
2253 printf ("SYMBOL TABLE:\n");
2254 }
2255
2256 if (max == 0)
2257 printf (_("no symbols\n"));
2258
2259 for (count = 0; count < max; count++)
2260 {
2261 bfd *cur_bfd;
2262
2263 if (*current == NULL)
2264 printf (_("no information for the %ld'th symbol"), count);
2265
2266 else if ((cur_bfd = bfd_asymbol_bfd (*current)) == NULL)
2267 printf (_("could not determine the type of the %ld'th symbol"),
2268 count);
2269
2270 else
2271 {
2272 const char *name = (*current)->name;
2273
2274 if (do_demangle && name != NULL && *name != '\0')
2275 {
2276 char *alloc;
2277
2278 /* If we want to demangle the name, we demangle it
2279 here, and temporarily clobber it while calling
2280 bfd_print_symbol. FIXME: This is a gross hack. */
2281 alloc = demangle (cur_bfd, name);
2282 (*current)->name = alloc;
2283 bfd_print_symbol (cur_bfd, stdout, *current,
2284 bfd_print_symbol_all);
2285 (*current)->name = name;
2286 free (alloc);
2287 }
2288 else
2289 bfd_print_symbol (cur_bfd, stdout, *current,
2290 bfd_print_symbol_all);
2291 }
2292
2293 printf ("\n");
2294 current++;
2295 }
2296 printf ("\n\n");
2297 }
2298 \f
2299 static void
2300 dump_reloc_set (bfd *abfd, asection *sec, arelent **relpp, long relcount)
2301 {
2302 arelent **p;
2303 char *last_filename, *last_functionname;
2304 unsigned int last_line;
2305
2306 /* Get column headers lined up reasonably. */
2307 {
2308 static int width;
2309
2310 if (width == 0)
2311 {
2312 char buf[30];
2313
2314 bfd_sprintf_vma (abfd, buf, (bfd_vma) -1);
2315 width = strlen (buf) - 7;
2316 }
2317 printf ("OFFSET %*s TYPE %*s VALUE \n", width, "", 12, "");
2318 }
2319
2320 last_filename = NULL;
2321 last_functionname = NULL;
2322 last_line = 0;
2323
2324 for (p = relpp; relcount && *p != NULL; p++, relcount--)
2325 {
2326 arelent *q = *p;
2327 const char *filename, *functionname;
2328 unsigned int line;
2329 const char *sym_name;
2330 const char *section_name;
2331
2332 if (start_address != (bfd_vma) -1
2333 && q->address < start_address)
2334 continue;
2335 if (stop_address != (bfd_vma) -1
2336 && q->address > stop_address)
2337 continue;
2338
2339 if (with_line_numbers
2340 && sec != NULL
2341 && bfd_find_nearest_line (abfd, sec, syms, q->address,
2342 &filename, &functionname, &line))
2343 {
2344 if (functionname != NULL
2345 && (last_functionname == NULL
2346 || strcmp (functionname, last_functionname) != 0))
2347 {
2348 printf ("%s():\n", functionname);
2349 if (last_functionname != NULL)
2350 free (last_functionname);
2351 last_functionname = xstrdup (functionname);
2352 }
2353
2354 if (line > 0
2355 && (line != last_line
2356 || (filename != NULL
2357 && last_filename != NULL
2358 && strcmp (filename, last_filename) != 0)))
2359 {
2360 printf ("%s:%u\n", filename == NULL ? "???" : filename, line);
2361 last_line = line;
2362 if (last_filename != NULL)
2363 free (last_filename);
2364 if (filename == NULL)
2365 last_filename = NULL;
2366 else
2367 last_filename = xstrdup (filename);
2368 }
2369 }
2370
2371 if (q->sym_ptr_ptr && *q->sym_ptr_ptr)
2372 {
2373 sym_name = (*(q->sym_ptr_ptr))->name;
2374 section_name = (*(q->sym_ptr_ptr))->section->name;
2375 }
2376 else
2377 {
2378 sym_name = NULL;
2379 section_name = NULL;
2380 }
2381
2382 if (sym_name)
2383 {
2384 bfd_printf_vma (abfd, q->address);
2385 if (q->howto->name)
2386 printf (" %-16s ", q->howto->name);
2387 else
2388 printf (" %-16d ", q->howto->type);
2389 objdump_print_symname (abfd, NULL, *q->sym_ptr_ptr);
2390 }
2391 else
2392 {
2393 if (section_name == NULL)
2394 section_name = "*unknown*";
2395 bfd_printf_vma (abfd, q->address);
2396 printf (" %-16s [%s]",
2397 q->howto->name,
2398 section_name);
2399 }
2400
2401 if (q->addend)
2402 {
2403 printf ("+0x");
2404 bfd_printf_vma (abfd, q->addend);
2405 }
2406
2407 printf ("\n");
2408 }
2409 }
2410
2411 static void
2412 dump_relocs_in_section (bfd *abfd,
2413 asection *section,
2414 void *dummy ATTRIBUTE_UNUSED)
2415 {
2416 arelent **relpp;
2417 long relcount;
2418 long relsize;
2419
2420 if ( bfd_is_abs_section (section)
2421 || bfd_is_und_section (section)
2422 || bfd_is_com_section (section)
2423 || (! process_section_p (section))
2424 || ((section->flags & SEC_RELOC) == 0))
2425 return;
2426
2427 relsize = bfd_get_reloc_upper_bound (abfd, section);
2428 if (relsize < 0)
2429 bfd_fatal (bfd_get_filename (abfd));
2430
2431 printf ("RELOCATION RECORDS FOR [%s]:", section->name);
2432
2433 if (relsize == 0)
2434 {
2435 printf (" (none)\n\n");
2436 return;
2437 }
2438
2439 relpp = xmalloc (relsize);
2440 relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
2441
2442 if (relcount < 0)
2443 bfd_fatal (bfd_get_filename (abfd));
2444 else if (relcount == 0)
2445 printf (" (none)\n\n");
2446 else
2447 {
2448 printf ("\n");
2449 dump_reloc_set (abfd, section, relpp, relcount);
2450 printf ("\n\n");
2451 }
2452 free (relpp);
2453 }
2454
2455 static void
2456 dump_relocs (bfd *abfd)
2457 {
2458 bfd_map_over_sections (abfd, dump_relocs_in_section, NULL);
2459 }
2460
2461 static void
2462 dump_dynamic_relocs (bfd *abfd)
2463 {
2464 long relsize;
2465 arelent **relpp;
2466 long relcount;
2467
2468 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2469 if (relsize < 0)
2470 bfd_fatal (bfd_get_filename (abfd));
2471
2472 printf ("DYNAMIC RELOCATION RECORDS");
2473
2474 if (relsize == 0)
2475 printf (" (none)\n\n");
2476 else
2477 {
2478 relpp = xmalloc (relsize);
2479 relcount = bfd_canonicalize_dynamic_reloc (abfd, relpp, dynsyms);
2480
2481 if (relcount < 0)
2482 bfd_fatal (bfd_get_filename (abfd));
2483 else if (relcount == 0)
2484 printf (" (none)\n\n");
2485 else
2486 {
2487 printf ("\n");
2488 dump_reloc_set (abfd, NULL, relpp, relcount);
2489 printf ("\n\n");
2490 }
2491 free (relpp);
2492 }
2493 }
2494
2495 /* Creates a table of paths, to search for source files. */
2496
2497 static void
2498 add_include_path (const char *path)
2499 {
2500 if (path[0] == 0)
2501 return;
2502 include_path_count++;
2503 include_paths = xrealloc (include_paths,
2504 include_path_count * sizeof (*include_paths));
2505 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2506 if (path[1] == ':' && path[2] == 0)
2507 path = concat (path, ".", (const char *) 0);
2508 #endif
2509 include_paths[include_path_count - 1] = path;
2510 }
2511
2512 static void
2513 adjust_addresses (bfd *abfd ATTRIBUTE_UNUSED,
2514 asection *section,
2515 void *dummy ATTRIBUTE_UNUSED)
2516 {
2517 section->vma += adjust_section_vma;
2518 section->lma += adjust_section_vma;
2519 }
2520
2521 /* Dump selected contents of ABFD. */
2522
2523 static void
2524 dump_bfd (bfd *abfd)
2525 {
2526 /* If we are adjusting section VMA's, change them all now. Changing
2527 the BFD information is a hack. However, we must do it, or
2528 bfd_find_nearest_line will not do the right thing. */
2529 if (adjust_section_vma != 0)
2530 bfd_map_over_sections (abfd, adjust_addresses, NULL);
2531
2532 if (! dump_debugging_tags)
2533 printf (_("\n%s: file format %s\n"), bfd_get_filename (abfd),
2534 abfd->xvec->name);
2535 if (dump_ar_hdrs)
2536 print_arelt_descr (stdout, abfd, TRUE);
2537 if (dump_file_header)
2538 dump_bfd_header (abfd);
2539 if (dump_private_headers)
2540 dump_bfd_private_header (abfd);
2541 if (! dump_debugging_tags)
2542 putchar ('\n');
2543 if (dump_section_headers)
2544 dump_headers (abfd);
2545
2546 if (dump_symtab || dump_reloc_info || disassemble || dump_debugging)
2547 syms = slurp_symtab (abfd);
2548 if (dump_dynamic_symtab || dump_dynamic_reloc_info)
2549 dynsyms = slurp_dynamic_symtab (abfd);
2550
2551 if (dump_symtab)
2552 dump_symbols (abfd, FALSE);
2553 if (dump_dynamic_symtab)
2554 dump_symbols (abfd, TRUE);
2555 if (dump_stab_section_info)
2556 dump_stabs (abfd);
2557 if (dump_reloc_info && ! disassemble)
2558 dump_relocs (abfd);
2559 if (dump_dynamic_reloc_info && ! disassemble)
2560 dump_dynamic_relocs (abfd);
2561 if (dump_section_contents)
2562 dump_data (abfd);
2563 if (disassemble)
2564 disassemble_data (abfd);
2565
2566 if (dump_debugging)
2567 {
2568 void *dhandle;
2569
2570 dhandle = read_debugging_info (abfd, syms, symcount);
2571 if (dhandle != NULL)
2572 {
2573 if (! print_debugging_info (stdout, dhandle, abfd, syms, demangle,
2574 dump_debugging_tags ? TRUE : FALSE))
2575 {
2576 non_fatal (_("%s: printing debugging information failed"),
2577 bfd_get_filename (abfd));
2578 exit_status = 1;
2579 }
2580 }
2581 }
2582
2583 if (syms)
2584 {
2585 free (syms);
2586 syms = NULL;
2587 }
2588
2589 if (dynsyms)
2590 {
2591 free (dynsyms);
2592 dynsyms = NULL;
2593 }
2594 }
2595
2596 static void
2597 display_bfd (bfd *abfd)
2598 {
2599 char **matching;
2600
2601 if (bfd_check_format_matches (abfd, bfd_object, &matching))
2602 {
2603 dump_bfd (abfd);
2604 return;
2605 }
2606
2607 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
2608 {
2609 nonfatal (bfd_get_filename (abfd));
2610 list_matching_formats (matching);
2611 free (matching);
2612 return;
2613 }
2614
2615 if (bfd_get_error () != bfd_error_file_not_recognized)
2616 {
2617 nonfatal (bfd_get_filename (abfd));
2618 return;
2619 }
2620
2621 if (bfd_check_format_matches (abfd, bfd_core, &matching))
2622 {
2623 dump_bfd (abfd);
2624 return;
2625 }
2626
2627 nonfatal (bfd_get_filename (abfd));
2628
2629 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
2630 {
2631 list_matching_formats (matching);
2632 free (matching);
2633 }
2634 }
2635
2636 static void
2637 display_file (char *filename, char *target)
2638 {
2639 bfd *file;
2640 bfd *arfile = NULL;
2641
2642 if (get_file_size (filename) < 1)
2643 return;
2644
2645 file = bfd_openr (filename, target);
2646 if (file == NULL)
2647 {
2648 nonfatal (filename);
2649 return;
2650 }
2651
2652 /* If the file is an archive, process all of its elements. */
2653 if (bfd_check_format (file, bfd_archive))
2654 {
2655 bfd *last_arfile = NULL;
2656
2657 printf (_("In archive %s:\n"), bfd_get_filename (file));
2658 for (;;)
2659 {
2660 bfd_set_error (bfd_error_no_error);
2661
2662 arfile = bfd_openr_next_archived_file (file, arfile);
2663 if (arfile == NULL)
2664 {
2665 if (bfd_get_error () != bfd_error_no_more_archived_files)
2666 nonfatal (bfd_get_filename (file));
2667 break;
2668 }
2669
2670 display_bfd (arfile);
2671
2672 if (last_arfile != NULL)
2673 bfd_close (last_arfile);
2674 last_arfile = arfile;
2675 }
2676
2677 if (last_arfile != NULL)
2678 bfd_close (last_arfile);
2679 }
2680 else
2681 display_bfd (file);
2682
2683 bfd_close (file);
2684 }
2685 \f
2686 int
2687 main (int argc, char **argv)
2688 {
2689 int c;
2690 char *target = default_target;
2691 bfd_boolean seenflag = FALSE;
2692
2693 #if defined (HAVE_SETLOCALE)
2694 #if defined (HAVE_LC_MESSAGES)
2695 setlocale (LC_MESSAGES, "");
2696 #endif
2697 setlocale (LC_CTYPE, "");
2698 #endif
2699
2700 bindtextdomain (PACKAGE, LOCALEDIR);
2701 textdomain (PACKAGE);
2702
2703 program_name = *argv;
2704 xmalloc_set_program_name (program_name);
2705
2706 START_PROGRESS (program_name, 0);
2707
2708 bfd_init ();
2709 set_default_bfd_target ();
2710
2711 while ((c = getopt_long (argc, argv, "pib:m:M:VvCdDlfaHhrRtTxsSI:j:wE:zgeG",
2712 long_options, (int *) 0))
2713 != EOF)
2714 {
2715 switch (c)
2716 {
2717 case 0:
2718 break; /* We've been given a long option. */
2719 case 'm':
2720 machine = optarg;
2721 break;
2722 case 'M':
2723 if (disassembler_options)
2724 /* Ignore potential memory leak for now. */
2725 disassembler_options = concat (disassembler_options, ",",
2726 optarg, NULL);
2727 else
2728 disassembler_options = optarg;
2729 break;
2730 case 'j':
2731 if (only_used == only_size)
2732 {
2733 only_size += 8;
2734 only = xrealloc (only, only_size * sizeof (char *));
2735 }
2736 only [only_used++] = optarg;
2737 break;
2738 case 'l':
2739 with_line_numbers = TRUE;
2740 break;
2741 case 'b':
2742 target = optarg;
2743 break;
2744 case 'C':
2745 do_demangle = TRUE;
2746 if (optarg != NULL)
2747 {
2748 enum demangling_styles style;
2749
2750 style = cplus_demangle_name_to_style (optarg);
2751 if (style == unknown_demangling)
2752 fatal (_("unknown demangling style `%s'"),
2753 optarg);
2754
2755 cplus_demangle_set_style (style);
2756 }
2757 break;
2758 case 'w':
2759 wide_output = TRUE;
2760 break;
2761 case OPTION_ADJUST_VMA:
2762 adjust_section_vma = parse_vma (optarg, "--adjust-vma");
2763 break;
2764 case OPTION_START_ADDRESS:
2765 start_address = parse_vma (optarg, "--start-address");
2766 break;
2767 case OPTION_STOP_ADDRESS:
2768 stop_address = parse_vma (optarg, "--stop-address");
2769 break;
2770 case 'E':
2771 if (strcmp (optarg, "B") == 0)
2772 endian = BFD_ENDIAN_BIG;
2773 else if (strcmp (optarg, "L") == 0)
2774 endian = BFD_ENDIAN_LITTLE;
2775 else
2776 {
2777 non_fatal (_("unrecognized -E option"));
2778 usage (stderr, 1);
2779 }
2780 break;
2781 case OPTION_ENDIAN:
2782 if (strncmp (optarg, "big", strlen (optarg)) == 0)
2783 endian = BFD_ENDIAN_BIG;
2784 else if (strncmp (optarg, "little", strlen (optarg)) == 0)
2785 endian = BFD_ENDIAN_LITTLE;
2786 else
2787 {
2788 non_fatal (_("unrecognized --endian type `%s'"), optarg);
2789 usage (stderr, 1);
2790 }
2791 break;
2792
2793 case 'f':
2794 dump_file_header = TRUE;
2795 seenflag = TRUE;
2796 break;
2797 case 'i':
2798 formats_info = TRUE;
2799 seenflag = TRUE;
2800 break;
2801 case 'I':
2802 add_include_path (optarg);
2803 break;
2804 case 'p':
2805 dump_private_headers = TRUE;
2806 seenflag = TRUE;
2807 break;
2808 case 'x':
2809 dump_private_headers = TRUE;
2810 dump_symtab = TRUE;
2811 dump_reloc_info = TRUE;
2812 dump_file_header = TRUE;
2813 dump_ar_hdrs = TRUE;
2814 dump_section_headers = TRUE;
2815 seenflag = TRUE;
2816 break;
2817 case 't':
2818 dump_symtab = TRUE;
2819 seenflag = TRUE;
2820 break;
2821 case 'T':
2822 dump_dynamic_symtab = TRUE;
2823 seenflag = TRUE;
2824 break;
2825 case 'd':
2826 disassemble = TRUE;
2827 seenflag = TRUE;
2828 break;
2829 case 'z':
2830 disassemble_zeroes = TRUE;
2831 break;
2832 case 'D':
2833 disassemble = TRUE;
2834 disassemble_all = TRUE;
2835 seenflag = TRUE;
2836 break;
2837 case 'S':
2838 disassemble = TRUE;
2839 with_source_code = TRUE;
2840 seenflag = TRUE;
2841 break;
2842 case 'g':
2843 dump_debugging = 1;
2844 seenflag = TRUE;
2845 break;
2846 case 'e':
2847 dump_debugging = 1;
2848 dump_debugging_tags = 1;
2849 do_demangle = TRUE;
2850 seenflag = TRUE;
2851 break;
2852 case 'G':
2853 dump_stab_section_info = TRUE;
2854 seenflag = TRUE;
2855 break;
2856 case 's':
2857 dump_section_contents = TRUE;
2858 seenflag = TRUE;
2859 break;
2860 case 'r':
2861 dump_reloc_info = TRUE;
2862 seenflag = TRUE;
2863 break;
2864 case 'R':
2865 dump_dynamic_reloc_info = TRUE;
2866 seenflag = TRUE;
2867 break;
2868 case 'a':
2869 dump_ar_hdrs = TRUE;
2870 seenflag = TRUE;
2871 break;
2872 case 'h':
2873 dump_section_headers = TRUE;
2874 seenflag = TRUE;
2875 break;
2876 case 'H':
2877 usage (stdout, 0);
2878 seenflag = TRUE;
2879 case 'v':
2880 case 'V':
2881 show_version = TRUE;
2882 seenflag = TRUE;
2883 break;
2884
2885 default:
2886 usage (stderr, 1);
2887 }
2888 }
2889
2890 if (show_version)
2891 print_version ("objdump");
2892
2893 if (!seenflag)
2894 usage (stderr, 2);
2895
2896 if (formats_info)
2897 exit_status = display_info ();
2898 else
2899 {
2900 if (optind == argc)
2901 display_file ("a.out", target);
2902 else
2903 for (; optind < argc;)
2904 display_file (argv[optind++], target);
2905 }
2906
2907 END_PROGRESS (program_name);
2908
2909 return exit_status;
2910 }
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