* Makefile.def, configure.in, src-release: Remove useless, bogus
[binutils.git] / binutils / objdump.c
blob7cc96406480222751f7adc96a3e908f8036ce2c8
1 /* objdump.c -- dump information about an object file.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001, 2002, 2003, 2004
4 Free Software Foundation, Inc.
6 This file is part of GNU Binutils.
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.
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.
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. */
22 /* Objdump overview.
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.
29 The flow of execution is as follows:
31 1. Command line arguments are checked for control switches and the
32 information to be displayed is selected.
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.
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.
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.
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. */
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"
64 /* Internal headers for the ELF .stab-dump code - sorry. */
65 #define BYTES_IN_WORD 32
66 #include "aout/aout64.h"
68 #ifdef NEED_DECLARATION_FPRINTF
69 /* This is needed by init_disassemble_info(). */
70 extern int fprintf (FILE *, const char *, ...);
71 #endif
73 /* Exit status. */
74 static int exit_status = 0;
76 static char *default_target = NULL; /* Default at runtime. */
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 */
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;
116 /* Variables for handling include file path table. */
117 static const char **include_paths;
118 static int include_path_count;
120 /* Extra info to pass to the section disassembler and address printing
121 function. */
122 struct objdump_disasm_info
124 bfd * abfd;
125 asection * sec;
126 bfd_boolean require_sec;
127 arelent ** dynrelbuf;
128 long dynrelcount;
129 disassembler_ftype disassemble_fn;
132 /* Architecture to disassemble for, or default if NULL. */
133 static char *machine = NULL;
135 /* Target specific options to the disassembler. */
136 static char *disassembler_options = NULL;
138 /* Endianness to disassemble for, or default if BFD_ENDIAN_UNKNOWN. */
139 static enum bfd_endian endian = BFD_ENDIAN_UNKNOWN;
141 /* The symbol table. */
142 static asymbol **syms;
144 /* Number of symbols in `syms'. */
145 static long symcount = 0;
147 /* The sorted symbol table. */
148 static asymbol **sorted_syms;
150 /* Number of symbols in `sorted_syms'. */
151 static long sorted_symcount = 0;
153 /* The dynamic symbol table. */
154 static asymbol **dynsyms;
156 /* The synthetic symbol table. */
157 static asymbol *synthsyms;
158 static long synthcount = 0;
160 /* Number of symbols in `dynsyms'. */
161 static long dynsymcount = 0;
163 static bfd_byte *stabs;
164 static bfd_size_type stab_size;
166 static char *strtab;
167 static bfd_size_type stabstr_size;
169 static void
170 usage (FILE *stream, int status)
172 fprintf (stream, _("Usage: %s <option(s)> <file(s)>\n"), program_name);
173 fprintf (stream, _(" Display information from object <file(s)>.\n"));
174 fprintf (stream, _(" At least one of the following switches must be given:\n"));
175 fprintf (stream, _("\
176 -a, --archive-headers Display archive header information\n\
177 -f, --file-headers Display the contents of the overall file header\n\
178 -p, --private-headers Display object format specific file header contents\n\
179 -h, --[section-]headers Display the contents of the section headers\n\
180 -x, --all-headers Display the contents of all headers\n\
181 -d, --disassemble Display assembler contents of executable sections\n\
182 -D, --disassemble-all Display assembler contents of all sections\n\
183 -S, --source Intermix source code with disassembly\n\
184 -s, --full-contents Display the full contents of all sections requested\n\
185 -g, --debugging Display debug information in object file\n\
186 -e, --debugging-tags Display debug information using ctags style\n\
187 -G, --stabs Display (in raw form) any STABS info in the file\n\
188 -t, --syms Display the contents of the symbol table(s)\n\
189 -T, --dynamic-syms Display the contents of the dynamic symbol table\n\
190 -r, --reloc Display the relocation entries in the file\n\
191 -R, --dynamic-reloc Display the dynamic relocation entries in the file\n\
192 -v, --version Display this program's version number\n\
193 -i, --info List object formats and architectures supported\n\
194 -H, --help Display this information\n\
195 "));
196 if (status != 2)
198 fprintf (stream, _("\n The following switches are optional:\n"));
199 fprintf (stream, _("\
200 -b, --target=BFDNAME Specify the target object format as BFDNAME\n\
201 -m, --architecture=MACHINE Specify the target architecture as MACHINE\n\
202 -j, --section=NAME Only display information for section NAME\n\
203 -M, --disassembler-options=OPT Pass text OPT on to the disassembler\n\
204 -EB --endian=big Assume big endian format when disassembling\n\
205 -EL --endian=little Assume little endian format when disassembling\n\
206 --file-start-context Include context from start of file (with -S)\n\
207 -I, --include=DIR Add DIR to search list for source files\n\
208 -l, --line-numbers Include line numbers and filenames in output\n\
209 -C, --demangle[=STYLE] Decode mangled/processed symbol names\n\
210 The STYLE, if specified, can be `auto', `gnu',\n\
211 `lucid', `arm', `hp', `edg', `gnu-v3', `java'\n\
212 or `gnat'\n\
213 -w, --wide Format output for more than 80 columns\n\
214 -z, --disassemble-zeroes Do not skip blocks of zeroes when disassembling\n\
215 --start-address=ADDR Only process data whose address is >= ADDR\n\
216 --stop-address=ADDR Only process data whose address is <= ADDR\n\
217 --prefix-addresses Print complete address alongside disassembly\n\
218 --[no-]show-raw-insn Display hex alongside symbolic disassembly\n\
219 --adjust-vma=OFFSET Add OFFSET to all displayed section addresses\n\
220 \n"));
221 list_supported_targets (program_name, stream);
222 list_supported_architectures (program_name, stream);
224 disassembler_usage (stream);
226 if (status == 0)
227 fprintf (stream, _("Report bugs to %s.\n"), REPORT_BUGS_TO);
228 exit (status);
231 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
232 enum option_values
234 OPTION_ENDIAN=150,
235 OPTION_START_ADDRESS,
236 OPTION_STOP_ADDRESS,
237 OPTION_ADJUST_VMA
240 static struct option long_options[]=
242 {"adjust-vma", required_argument, NULL, OPTION_ADJUST_VMA},
243 {"all-headers", no_argument, NULL, 'x'},
244 {"private-headers", no_argument, NULL, 'p'},
245 {"architecture", required_argument, NULL, 'm'},
246 {"archive-headers", no_argument, NULL, 'a'},
247 {"debugging", no_argument, NULL, 'g'},
248 {"debugging-tags", no_argument, NULL, 'e'},
249 {"demangle", optional_argument, NULL, 'C'},
250 {"disassemble", no_argument, NULL, 'd'},
251 {"disassemble-all", no_argument, NULL, 'D'},
252 {"disassembler-options", required_argument, NULL, 'M'},
253 {"disassemble-zeroes", no_argument, NULL, 'z'},
254 {"dynamic-reloc", no_argument, NULL, 'R'},
255 {"dynamic-syms", no_argument, NULL, 'T'},
256 {"endian", required_argument, NULL, OPTION_ENDIAN},
257 {"file-headers", no_argument, NULL, 'f'},
258 {"file-start-context", no_argument, &file_start_context, 1},
259 {"full-contents", no_argument, NULL, 's'},
260 {"headers", no_argument, NULL, 'h'},
261 {"help", no_argument, NULL, 'H'},
262 {"info", no_argument, NULL, 'i'},
263 {"line-numbers", no_argument, NULL, 'l'},
264 {"no-show-raw-insn", no_argument, &show_raw_insn, -1},
265 {"prefix-addresses", no_argument, &prefix_addresses, 1},
266 {"reloc", no_argument, NULL, 'r'},
267 {"section", required_argument, NULL, 'j'},
268 {"section-headers", no_argument, NULL, 'h'},
269 {"show-raw-insn", no_argument, &show_raw_insn, 1},
270 {"source", no_argument, NULL, 'S'},
271 {"include", required_argument, NULL, 'I'},
272 {"stabs", no_argument, NULL, 'G'},
273 {"start-address", required_argument, NULL, OPTION_START_ADDRESS},
274 {"stop-address", required_argument, NULL, OPTION_STOP_ADDRESS},
275 {"syms", no_argument, NULL, 't'},
276 {"target", required_argument, NULL, 'b'},
277 {"version", no_argument, NULL, 'V'},
278 {"wide", no_argument, NULL, 'w'},
279 {0, no_argument, 0, 0}
282 static void
283 nonfatal (const char *msg)
285 bfd_nonfatal (msg);
286 exit_status = 1;
289 static void
290 dump_section_header (bfd *abfd ATTRIBUTE_UNUSED, asection *section,
291 void *ignored ATTRIBUTE_UNUSED)
293 char *comma = "";
294 unsigned int opb = bfd_octets_per_byte (abfd);
296 printf ("%3d %-13s %08lx ", section->index,
297 bfd_get_section_name (abfd, section),
298 (unsigned long) bfd_section_size (abfd, section) / opb);
299 bfd_printf_vma (abfd, bfd_get_section_vma (abfd, section));
300 printf (" ");
301 bfd_printf_vma (abfd, section->lma);
302 printf (" %08lx 2**%u", (unsigned long) section->filepos,
303 bfd_get_section_alignment (abfd, section));
304 if (! wide_output)
305 printf ("\n ");
306 printf (" ");
308 #define PF(x, y) \
309 if (section->flags & x) { printf ("%s%s", comma, y); comma = ", "; }
311 PF (SEC_HAS_CONTENTS, "CONTENTS");
312 PF (SEC_ALLOC, "ALLOC");
313 PF (SEC_CONSTRUCTOR, "CONSTRUCTOR");
314 PF (SEC_LOAD, "LOAD");
315 PF (SEC_RELOC, "RELOC");
316 PF (SEC_READONLY, "READONLY");
317 PF (SEC_CODE, "CODE");
318 PF (SEC_DATA, "DATA");
319 PF (SEC_ROM, "ROM");
320 PF (SEC_DEBUGGING, "DEBUGGING");
321 PF (SEC_NEVER_LOAD, "NEVER_LOAD");
322 PF (SEC_EXCLUDE, "EXCLUDE");
323 PF (SEC_SORT_ENTRIES, "SORT_ENTRIES");
324 PF (SEC_BLOCK, "BLOCK");
325 PF (SEC_CLINK, "CLINK");
326 PF (SEC_SMALL_DATA, "SMALL_DATA");
327 PF (SEC_SHARED, "SHARED");
328 PF (SEC_ARCH_BIT_0, "ARCH_BIT_0");
329 PF (SEC_THREAD_LOCAL, "THREAD_LOCAL");
331 if ((section->flags & SEC_LINK_ONCE) != 0)
333 const char *ls;
334 struct coff_comdat_info *comdat;
336 switch (section->flags & SEC_LINK_DUPLICATES)
338 default:
339 abort ();
340 case SEC_LINK_DUPLICATES_DISCARD:
341 ls = "LINK_ONCE_DISCARD";
342 break;
343 case SEC_LINK_DUPLICATES_ONE_ONLY:
344 ls = "LINK_ONCE_ONE_ONLY";
345 break;
346 case SEC_LINK_DUPLICATES_SAME_SIZE:
347 ls = "LINK_ONCE_SAME_SIZE";
348 break;
349 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
350 ls = "LINK_ONCE_SAME_CONTENTS";
351 break;
353 printf ("%s%s", comma, ls);
355 comdat = bfd_coff_get_comdat_section (abfd, section);
356 if (comdat != NULL)
357 printf (" (COMDAT %s %ld)", comdat->name, comdat->symbol);
359 comma = ", ";
362 printf ("\n");
363 #undef PF
366 static void
367 dump_headers (bfd *abfd)
369 printf (_("Sections:\n"));
371 #ifndef BFD64
372 printf (_("Idx Name Size VMA LMA File off Algn"));
373 #else
374 /* With BFD64, non-ELF returns -1 and wants always 64 bit addresses. */
375 if (bfd_get_arch_size (abfd) == 32)
376 printf (_("Idx Name Size VMA LMA File off Algn"));
377 else
378 printf (_("Idx Name Size VMA LMA File off Algn"));
379 #endif
381 if (wide_output)
382 printf (_(" Flags"));
383 if (abfd->flags & HAS_LOAD_PAGE)
384 printf (_(" Pg"));
385 printf ("\n");
387 bfd_map_over_sections (abfd, dump_section_header, NULL);
390 static asymbol **
391 slurp_symtab (bfd *abfd)
393 asymbol **sy = NULL;
394 long storage;
396 if (!(bfd_get_file_flags (abfd) & HAS_SYMS))
398 symcount = 0;
399 return NULL;
402 storage = bfd_get_symtab_upper_bound (abfd);
403 if (storage < 0)
404 bfd_fatal (bfd_get_filename (abfd));
405 if (storage)
406 sy = xmalloc (storage);
408 symcount = bfd_canonicalize_symtab (abfd, sy);
409 if (symcount < 0)
410 bfd_fatal (bfd_get_filename (abfd));
411 return sy;
414 /* Read in the dynamic symbols. */
416 static asymbol **
417 slurp_dynamic_symtab (bfd *abfd)
419 asymbol **sy = NULL;
420 long storage;
422 storage = bfd_get_dynamic_symtab_upper_bound (abfd);
423 if (storage < 0)
425 if (!(bfd_get_file_flags (abfd) & DYNAMIC))
427 non_fatal (_("%s: not a dynamic object"), bfd_get_filename (abfd));
428 dynsymcount = 0;
429 return NULL;
432 bfd_fatal (bfd_get_filename (abfd));
434 if (storage)
435 sy = xmalloc (storage);
437 dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, sy);
438 if (dynsymcount < 0)
439 bfd_fatal (bfd_get_filename (abfd));
440 return sy;
443 /* Filter out (in place) symbols that are useless for disassembly.
444 COUNT is the number of elements in SYMBOLS.
445 Return the number of useful symbols. */
447 static long
448 remove_useless_symbols (asymbol **symbols, long count)
450 asymbol **in_ptr = symbols, **out_ptr = symbols;
452 while (--count >= 0)
454 asymbol *sym = *in_ptr++;
456 if (sym->name == NULL || sym->name[0] == '\0')
457 continue;
458 if (sym->flags & (BSF_DEBUGGING))
459 continue;
460 if (bfd_is_und_section (sym->section)
461 || bfd_is_com_section (sym->section))
462 continue;
464 *out_ptr++ = sym;
466 return out_ptr - symbols;
469 /* Sort symbols into value order. */
471 static int
472 compare_symbols (const void *ap, const void *bp)
474 const asymbol *a = * (const asymbol **) ap;
475 const asymbol *b = * (const asymbol **) bp;
476 const char *an;
477 const char *bn;
478 size_t anl;
479 size_t bnl;
480 bfd_boolean af;
481 bfd_boolean bf;
482 flagword aflags;
483 flagword bflags;
485 if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
486 return 1;
487 else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
488 return -1;
490 if (a->section > b->section)
491 return 1;
492 else if (a->section < b->section)
493 return -1;
495 an = bfd_asymbol_name (a);
496 bn = bfd_asymbol_name (b);
497 anl = strlen (an);
498 bnl = strlen (bn);
500 /* The symbols gnu_compiled and gcc2_compiled convey no real
501 information, so put them after other symbols with the same value. */
502 af = (strstr (an, "gnu_compiled") != NULL
503 || strstr (an, "gcc2_compiled") != NULL);
504 bf = (strstr (bn, "gnu_compiled") != NULL
505 || strstr (bn, "gcc2_compiled") != NULL);
507 if (af && ! bf)
508 return 1;
509 if (! af && bf)
510 return -1;
512 /* We use a heuristic for the file name, to try to sort it after
513 more useful symbols. It may not work on non Unix systems, but it
514 doesn't really matter; the only difference is precisely which
515 symbol names get printed. */
517 #define file_symbol(s, sn, snl) \
518 (((s)->flags & BSF_FILE) != 0 \
519 || ((sn)[(snl) - 2] == '.' \
520 && ((sn)[(snl) - 1] == 'o' \
521 || (sn)[(snl) - 1] == 'a')))
523 af = file_symbol (a, an, anl);
524 bf = file_symbol (b, bn, bnl);
526 if (af && ! bf)
527 return 1;
528 if (! af && bf)
529 return -1;
531 /* Try to sort global symbols before local symbols before function
532 symbols before debugging symbols. */
534 aflags = a->flags;
535 bflags = b->flags;
537 if ((aflags & BSF_DEBUGGING) != (bflags & BSF_DEBUGGING))
539 if ((aflags & BSF_DEBUGGING) != 0)
540 return 1;
541 else
542 return -1;
544 if ((aflags & BSF_FUNCTION) != (bflags & BSF_FUNCTION))
546 if ((aflags & BSF_FUNCTION) != 0)
547 return -1;
548 else
549 return 1;
551 if ((aflags & BSF_LOCAL) != (bflags & BSF_LOCAL))
553 if ((aflags & BSF_LOCAL) != 0)
554 return 1;
555 else
556 return -1;
558 if ((aflags & BSF_GLOBAL) != (bflags & BSF_GLOBAL))
560 if ((aflags & BSF_GLOBAL) != 0)
561 return -1;
562 else
563 return 1;
566 /* Symbols that start with '.' might be section names, so sort them
567 after symbols that don't start with '.'. */
568 if (an[0] == '.' && bn[0] != '.')
569 return 1;
570 if (an[0] != '.' && bn[0] == '.')
571 return -1;
573 /* Finally, if we can't distinguish them in any other way, try to
574 get consistent results by sorting the symbols by name. */
575 return strcmp (an, bn);
578 /* Sort relocs into address order. */
580 static int
581 compare_relocs (const void *ap, const void *bp)
583 const arelent *a = * (const arelent **) ap;
584 const arelent *b = * (const arelent **) bp;
586 if (a->address > b->address)
587 return 1;
588 else if (a->address < b->address)
589 return -1;
591 /* So that associated relocations tied to the same address show up
592 in the correct order, we don't do any further sorting. */
593 if (a > b)
594 return 1;
595 else if (a < b)
596 return -1;
597 else
598 return 0;
601 /* Print an address (VMA) to the output stream in INFO.
602 If SKIP_ZEROES is TRUE, omit leading zeroes. */
604 static void
605 objdump_print_value (bfd_vma vma, struct disassemble_info *info,
606 bfd_boolean skip_zeroes)
608 char buf[30];
609 char *p;
610 struct objdump_disasm_info *aux;
612 aux = (struct objdump_disasm_info *) info->application_data;
613 bfd_sprintf_vma (aux->abfd, buf, vma);
614 if (! skip_zeroes)
615 p = buf;
616 else
618 for (p = buf; *p == '0'; ++p)
620 if (*p == '\0')
621 --p;
623 (*info->fprintf_func) (info->stream, "%s", p);
626 /* Print the name of a symbol. */
628 static void
629 objdump_print_symname (bfd *abfd, struct disassemble_info *info,
630 asymbol *sym)
632 char *alloc;
633 const char *name;
635 alloc = NULL;
636 name = bfd_asymbol_name (sym);
637 if (do_demangle && name[0] != '\0')
639 /* Demangle the name. */
640 alloc = demangle (abfd, name);
641 name = alloc;
644 if (info != NULL)
645 (*info->fprintf_func) (info->stream, "%s", name);
646 else
647 printf ("%s", name);
649 if (alloc != NULL)
650 free (alloc);
653 /* Locate a symbol given a bfd and a section (from INFO->application_data),
654 and a VMA. If INFO->application_data->require_sec is TRUE, then always
655 require the symbol to be in the section. Returns NULL if there is no
656 suitable symbol. If PLACE is not NULL, then *PLACE is set to the index
657 of the symbol in sorted_syms. */
659 static asymbol *
660 find_symbol_for_address (bfd_vma vma,
661 struct disassemble_info *info,
662 long *place)
664 /* @@ Would it speed things up to cache the last two symbols returned,
665 and maybe their address ranges? For many processors, only one memory
666 operand can be present at a time, so the 2-entry cache wouldn't be
667 constantly churned by code doing heavy memory accesses. */
669 /* Indices in `sorted_syms'. */
670 long min = 0;
671 long max = sorted_symcount;
672 long thisplace;
673 struct objdump_disasm_info *aux;
674 bfd *abfd;
675 asection *sec;
676 unsigned int opb;
678 if (sorted_symcount < 1)
679 return NULL;
681 aux = (struct objdump_disasm_info *) info->application_data;
682 abfd = aux->abfd;
683 sec = aux->sec;
684 opb = bfd_octets_per_byte (abfd);
686 /* Perform a binary search looking for the closest symbol to the
687 required value. We are searching the range (min, max]. */
688 while (min + 1 < max)
690 asymbol *sym;
692 thisplace = (max + min) / 2;
693 sym = sorted_syms[thisplace];
695 if (bfd_asymbol_value (sym) > vma)
696 max = thisplace;
697 else if (bfd_asymbol_value (sym) < vma)
698 min = thisplace;
699 else
701 min = thisplace;
702 break;
706 /* The symbol we want is now in min, the low end of the range we
707 were searching. If there are several symbols with the same
708 value, we want the first one. */
709 thisplace = min;
710 while (thisplace > 0
711 && (bfd_asymbol_value (sorted_syms[thisplace])
712 == bfd_asymbol_value (sorted_syms[thisplace - 1])))
713 --thisplace;
715 /* If the file is relocatable, and the symbol could be from this
716 section, prefer a symbol from this section over symbols from
717 others, even if the other symbol's value might be closer.
719 Note that this may be wrong for some symbol references if the
720 sections have overlapping memory ranges, but in that case there's
721 no way to tell what's desired without looking at the relocation
722 table. */
723 if (sorted_syms[thisplace]->section != sec
724 && (aux->require_sec
725 || ((abfd->flags & HAS_RELOC) != 0
726 && vma >= bfd_get_section_vma (abfd, sec)
727 && vma < (bfd_get_section_vma (abfd, sec)
728 + bfd_section_size (abfd, sec) / opb))))
730 long i;
732 for (i = thisplace + 1; i < sorted_symcount; i++)
734 if (bfd_asymbol_value (sorted_syms[i])
735 != bfd_asymbol_value (sorted_syms[thisplace]))
736 break;
739 --i;
741 for (; i >= 0; i--)
743 if (sorted_syms[i]->section == sec
744 && (i == 0
745 || sorted_syms[i - 1]->section != sec
746 || (bfd_asymbol_value (sorted_syms[i])
747 != bfd_asymbol_value (sorted_syms[i - 1]))))
749 thisplace = i;
750 break;
754 if (sorted_syms[thisplace]->section != sec)
756 /* We didn't find a good symbol with a smaller value.
757 Look for one with a larger value. */
758 for (i = thisplace + 1; i < sorted_symcount; i++)
760 if (sorted_syms[i]->section == sec)
762 thisplace = i;
763 break;
768 if (sorted_syms[thisplace]->section != sec
769 && (aux->require_sec
770 || ((abfd->flags & HAS_RELOC) != 0
771 && vma >= bfd_get_section_vma (abfd, sec)
772 && vma < (bfd_get_section_vma (abfd, sec)
773 + bfd_section_size (abfd, sec)))))
774 /* There is no suitable symbol. */
775 return NULL;
778 /* Give the target a chance to reject the symbol. */
779 while (! info->symbol_is_valid (sorted_syms [thisplace], info))
781 ++ thisplace;
782 if (thisplace >= sorted_symcount
783 || bfd_asymbol_value (sorted_syms [thisplace]) > vma)
784 return NULL;
787 if (place != NULL)
788 *place = thisplace;
790 return sorted_syms[thisplace];
793 /* Print an address and the offset to the nearest symbol. */
795 static void
796 objdump_print_addr_with_sym (bfd *abfd, asection *sec, asymbol *sym,
797 bfd_vma vma, struct disassemble_info *info,
798 bfd_boolean skip_zeroes)
800 objdump_print_value (vma, info, skip_zeroes);
802 if (sym == NULL)
804 bfd_vma secaddr;
806 (*info->fprintf_func) (info->stream, " <%s",
807 bfd_get_section_name (abfd, sec));
808 secaddr = bfd_get_section_vma (abfd, sec);
809 if (vma < secaddr)
811 (*info->fprintf_func) (info->stream, "-0x");
812 objdump_print_value (secaddr - vma, info, TRUE);
814 else if (vma > secaddr)
816 (*info->fprintf_func) (info->stream, "+0x");
817 objdump_print_value (vma - secaddr, info, TRUE);
819 (*info->fprintf_func) (info->stream, ">");
821 else
823 (*info->fprintf_func) (info->stream, " <");
824 objdump_print_symname (abfd, info, sym);
825 if (bfd_asymbol_value (sym) > vma)
827 (*info->fprintf_func) (info->stream, "-0x");
828 objdump_print_value (bfd_asymbol_value (sym) - vma, info, TRUE);
830 else if (vma > bfd_asymbol_value (sym))
832 (*info->fprintf_func) (info->stream, "+0x");
833 objdump_print_value (vma - bfd_asymbol_value (sym), info, TRUE);
835 (*info->fprintf_func) (info->stream, ">");
839 /* Print an address (VMA), symbolically if possible.
840 If SKIP_ZEROES is TRUE, don't output leading zeroes. */
842 static void
843 objdump_print_addr (bfd_vma vma,
844 struct disassemble_info *info,
845 bfd_boolean skip_zeroes)
847 struct objdump_disasm_info *aux;
848 asymbol *sym;
850 if (sorted_symcount < 1)
852 (*info->fprintf_func) (info->stream, "0x");
853 objdump_print_value (vma, info, skip_zeroes);
854 return;
857 aux = (struct objdump_disasm_info *) info->application_data;
858 sym = find_symbol_for_address (vma, info, NULL);
859 objdump_print_addr_with_sym (aux->abfd, aux->sec, sym, vma, info,
860 skip_zeroes);
863 /* Print VMA to INFO. This function is passed to the disassembler
864 routine. */
866 static void
867 objdump_print_address (bfd_vma vma, struct disassemble_info *info)
869 objdump_print_addr (vma, info, ! prefix_addresses);
872 /* Determine of the given address has a symbol associated with it. */
874 static int
875 objdump_symbol_at_address (bfd_vma vma, struct disassemble_info * info)
877 asymbol * sym;
879 sym = find_symbol_for_address (vma, info, NULL);
881 return (sym != NULL && (bfd_asymbol_value (sym) == vma));
884 /* Hold the last function name and the last line number we displayed
885 in a disassembly. */
887 static char *prev_functionname;
888 static unsigned int prev_line;
890 /* We keep a list of all files that we have seen when doing a
891 disassembly with source, so that we know how much of the file to
892 display. This can be important for inlined functions. */
894 struct print_file_list
896 struct print_file_list *next;
897 const char *filename;
898 const char *modname;
899 unsigned int line;
900 FILE *f;
903 static struct print_file_list *print_files;
905 /* The number of preceding context lines to show when we start
906 displaying a file for the first time. */
908 #define SHOW_PRECEDING_CONTEXT_LINES (5)
910 /* Tries to open MODNAME, and if successful adds a node to print_files
911 linked list and returns that node. Returns NULL on failure. */
913 static struct print_file_list *
914 try_print_file_open (const char *origname, const char *modname)
916 struct print_file_list *p;
917 FILE *f;
919 f = fopen (modname, "r");
920 if (f == NULL)
921 return NULL;
923 if (print_files != NULL && print_files->f != NULL)
925 fclose (print_files->f);
926 print_files->f = NULL;
929 p = xmalloc (sizeof (struct print_file_list));
930 p->filename = origname;
931 p->modname = modname;
932 p->line = 0;
933 p->f = f;
934 p->next = print_files;
935 print_files = p;
936 return p;
939 /* If the the source file, as described in the symtab, is not found
940 try to locate it in one of the paths specified with -I
941 If found, add location to print_files linked list. */
943 static struct print_file_list *
944 update_source_path (const char *filename)
946 struct print_file_list *p;
947 const char *fname;
948 int i;
950 if (filename == NULL)
951 return NULL;
953 p = try_print_file_open (filename, filename);
954 if (p != NULL)
955 return p;
957 if (include_path_count == 0)
958 return NULL;
960 /* Get the name of the file. */
961 fname = strrchr (filename, '/');
962 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
964 /* We could have a mixed forward/back slash case. */
965 char *backslash = strrchr (filename, '\\');
966 if (fname == NULL || (backslash != NULL && backslash > fname))
967 fname = backslash;
968 if (fname == NULL && filename[0] != '\0' && filename[1] == ':')
969 fname = filename + 1;
971 #endif
972 if (fname == NULL)
973 fname = filename;
974 else
975 ++fname;
977 /* If file exists under a new path, we need to add it to the list
978 so that show_line knows about it. */
979 for (i = 0; i < include_path_count; i++)
981 char *modname = concat (include_paths[i], "/", fname, (const char *) 0);
983 p = try_print_file_open (filename, modname);
984 if (p)
985 return p;
987 free (modname);
990 return NULL;
993 /* Skip ahead to a given line in a file, optionally printing each
994 line. */
996 static void
997 skip_to_line (struct print_file_list *p, unsigned int line,
998 bfd_boolean show)
1000 while (p->line < line)
1002 char buf[100];
1004 if (fgets (buf, sizeof buf, p->f) == NULL)
1006 fclose (p->f);
1007 p->f = NULL;
1008 break;
1011 if (show)
1012 printf ("%s", buf);
1014 if (strchr (buf, '\n') != NULL)
1015 ++p->line;
1019 /* Show the line number, or the source line, in a disassembly
1020 listing. */
1022 static void
1023 show_line (bfd *abfd, asection *section, bfd_vma addr_offset)
1025 const char *filename;
1026 const char *functionname;
1027 unsigned int line;
1029 if (! with_line_numbers && ! with_source_code)
1030 return;
1032 if (! bfd_find_nearest_line (abfd, section, syms, addr_offset, &filename,
1033 &functionname, &line))
1034 return;
1036 if (filename != NULL && *filename == '\0')
1037 filename = NULL;
1038 if (functionname != NULL && *functionname == '\0')
1039 functionname = NULL;
1041 if (with_line_numbers)
1043 if (functionname != NULL
1044 && (prev_functionname == NULL
1045 || strcmp (functionname, prev_functionname) != 0))
1046 printf ("%s():\n", functionname);
1047 if (line > 0 && line != prev_line)
1048 printf ("%s:%u\n", filename == NULL ? "???" : filename, line);
1051 if (with_source_code
1052 && filename != NULL
1053 && line > 0)
1055 struct print_file_list **pp, *p;
1057 for (pp = &print_files; *pp != NULL; pp = &(*pp)->next)
1058 if (strcmp ((*pp)->filename, filename) == 0)
1059 break;
1060 p = *pp;
1062 if (p != NULL)
1064 if (p != print_files)
1066 int l;
1068 /* We have reencountered a file name which we saw
1069 earlier. This implies that either we are dumping out
1070 code from an included file, or the same file was
1071 linked in more than once. There are two common cases
1072 of an included file: inline functions in a header
1073 file, and a bison or flex skeleton file. In the
1074 former case we want to just start printing (but we
1075 back up a few lines to give context); in the latter
1076 case we want to continue from where we left off. I
1077 can't think of a good way to distinguish the cases,
1078 so I used a heuristic based on the file name. */
1079 if (strcmp (p->filename + strlen (p->filename) - 2, ".h") != 0)
1080 l = p->line;
1081 else
1083 l = line - SHOW_PRECEDING_CONTEXT_LINES;
1084 if (l < 0)
1085 l = 0;
1088 if (p->f == NULL)
1090 p->f = fopen (p->modname, "r");
1091 p->line = 0;
1093 if (p->f != NULL)
1094 skip_to_line (p, l, FALSE);
1096 if (print_files->f != NULL)
1098 fclose (print_files->f);
1099 print_files->f = NULL;
1103 if (p->f != NULL)
1105 skip_to_line (p, line, TRUE);
1106 *pp = p->next;
1107 p->next = print_files;
1108 print_files = p;
1111 else
1113 p = update_source_path (filename);
1115 if (p != NULL)
1117 int l;
1119 if (file_start_context)
1120 l = 0;
1121 else
1122 l = line - SHOW_PRECEDING_CONTEXT_LINES;
1123 if (l < 0)
1124 l = 0;
1125 skip_to_line (p, l, FALSE);
1126 if (p->f != NULL)
1127 skip_to_line (p, line, TRUE);
1132 if (functionname != NULL
1133 && (prev_functionname == NULL
1134 || strcmp (functionname, prev_functionname) != 0))
1136 if (prev_functionname != NULL)
1137 free (prev_functionname);
1138 prev_functionname = xmalloc (strlen (functionname) + 1);
1139 strcpy (prev_functionname, functionname);
1142 if (line > 0 && line != prev_line)
1143 prev_line = line;
1146 /* Pseudo FILE object for strings. */
1147 typedef struct
1149 char *buffer;
1150 size_t pos;
1151 size_t alloc;
1152 } SFILE;
1154 /* sprintf to a "stream". */
1156 static int
1157 objdump_sprintf (SFILE *f, const char *format, ...)
1159 size_t n;
1160 va_list args;
1162 while (1)
1164 size_t space = f->alloc - f->pos;
1166 va_start (args, format);
1167 n = vsnprintf (f->buffer + f->pos, space, format, args);
1168 va_end (args);
1170 if (space > n)
1171 break;
1173 f->alloc = (f->alloc + n) * 2;
1174 f->buffer = xrealloc (f->buffer, f->alloc);
1176 f->pos += n;
1178 return n;
1181 /* Returns TRUE if the specified section should be dumped. */
1183 static bfd_boolean
1184 process_section_p (asection * section)
1186 size_t i;
1188 if (only == NULL)
1189 return TRUE;
1191 for (i = 0; i < only_used; i++)
1192 if (strcmp (only [i], section->name) == 0)
1193 return TRUE;
1195 return FALSE;
1199 /* The number of zeroes we want to see before we start skipping them.
1200 The number is arbitrarily chosen. */
1202 #ifndef SKIP_ZEROES
1203 #define SKIP_ZEROES (8)
1204 #endif
1206 /* The number of zeroes to skip at the end of a section. If the
1207 number of zeroes at the end is between SKIP_ZEROES_AT_END and
1208 SKIP_ZEROES, they will be disassembled. If there are fewer than
1209 SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic
1210 attempt to avoid disassembling zeroes inserted by section
1211 alignment. */
1213 #ifndef SKIP_ZEROES_AT_END
1214 #define SKIP_ZEROES_AT_END (3)
1215 #endif
1217 /* Disassemble some data in memory between given values. */
1219 static void
1220 disassemble_bytes (struct disassemble_info * info,
1221 disassembler_ftype disassemble_fn,
1222 bfd_boolean insns,
1223 bfd_byte * data,
1224 bfd_vma start_offset,
1225 bfd_vma stop_offset,
1226 bfd_vma rel_offset,
1227 arelent *** relppp,
1228 arelent ** relppend)
1230 struct objdump_disasm_info *aux;
1231 asection *section;
1232 int octets_per_line;
1233 bfd_boolean done_dot;
1234 int skip_addr_chars;
1235 bfd_vma addr_offset;
1236 int opb = info->octets_per_byte;
1237 SFILE sfile;
1239 aux = (struct objdump_disasm_info *) info->application_data;
1240 section = aux->sec;
1242 sfile.alloc = 120;
1243 sfile.buffer = xmalloc (sfile.alloc);
1244 sfile.pos = 0;
1246 if (insns)
1247 octets_per_line = 4;
1248 else
1249 octets_per_line = 16;
1251 /* Figure out how many characters to skip at the start of an
1252 address, to make the disassembly look nicer. We discard leading
1253 zeroes in chunks of 4, ensuring that there is always a leading
1254 zero remaining. */
1255 skip_addr_chars = 0;
1256 if (! prefix_addresses)
1258 char buf[30];
1259 char *s;
1261 bfd_sprintf_vma
1262 (aux->abfd, buf,
1263 (section->vma
1264 + bfd_section_size (section->owner, section) / opb));
1265 s = buf;
1266 while (s[0] == '0' && s[1] == '0' && s[2] == '0' && s[3] == '0'
1267 && s[4] == '0')
1269 skip_addr_chars += 4;
1270 s += 4;
1274 info->insn_info_valid = 0;
1276 done_dot = FALSE;
1277 addr_offset = start_offset;
1278 while (addr_offset < stop_offset)
1280 bfd_vma z;
1281 int octets = 0;
1282 bfd_boolean need_nl = FALSE;
1284 /* If we see more than SKIP_ZEROES octets of zeroes, we just
1285 print `...'. */
1286 for (z = addr_offset * opb; z < stop_offset * opb; z++)
1287 if (data[z] != 0)
1288 break;
1289 if (! disassemble_zeroes
1290 && (info->insn_info_valid == 0
1291 || info->branch_delay_insns == 0)
1292 && (z - addr_offset * opb >= SKIP_ZEROES
1293 || (z == stop_offset * opb &&
1294 z - addr_offset * opb < SKIP_ZEROES_AT_END)))
1296 printf ("\t...\n");
1298 /* If there are more nonzero octets to follow, we only skip
1299 zeroes in multiples of 4, to try to avoid running over
1300 the start of an instruction which happens to start with
1301 zero. */
1302 if (z != stop_offset * opb)
1303 z = addr_offset * opb + ((z - addr_offset * opb) &~ 3);
1305 octets = z - addr_offset * opb;
1307 else
1309 char buf[50];
1310 int bpc = 0;
1311 int pb = 0;
1313 done_dot = FALSE;
1315 if (with_line_numbers || with_source_code)
1316 /* The line number tables will refer to unadjusted
1317 section VMAs, so we must undo any VMA modifications
1318 when calling show_line. */
1319 show_line (aux->abfd, section, addr_offset - adjust_section_vma);
1321 if (! prefix_addresses)
1323 char *s;
1325 bfd_sprintf_vma (aux->abfd, buf, section->vma + addr_offset);
1326 for (s = buf + skip_addr_chars; *s == '0'; s++)
1327 *s = ' ';
1328 if (*s == '\0')
1329 *--s = '0';
1330 printf ("%s:\t", buf + skip_addr_chars);
1332 else
1334 aux->require_sec = TRUE;
1335 objdump_print_address (section->vma + addr_offset, info);
1336 aux->require_sec = FALSE;
1337 putchar (' ');
1340 if (insns)
1342 sfile.pos = 0;
1343 info->fprintf_func = (fprintf_ftype) objdump_sprintf;
1344 info->stream = (FILE *) &sfile;
1345 info->bytes_per_line = 0;
1346 info->bytes_per_chunk = 0;
1348 #ifdef DISASSEMBLER_NEEDS_RELOCS
1349 /* FIXME: This is wrong. It tests the number of octets
1350 in the last instruction, not the current one. */
1351 if (*relppp < relppend
1352 && (**relppp)->address >= rel_offset + addr_offset
1353 && ((**relppp)->address
1354 < rel_offset + addr_offset + octets / opb))
1355 info->flags = INSN_HAS_RELOC;
1356 else
1357 #endif
1358 info->flags = 0;
1360 octets = (*disassemble_fn) (section->vma + addr_offset, info);
1361 info->fprintf_func = (fprintf_ftype) fprintf;
1362 info->stream = stdout;
1363 if (info->bytes_per_line != 0)
1364 octets_per_line = info->bytes_per_line;
1365 if (octets < 0)
1367 if (sfile.pos)
1368 printf ("%s\n", sfile.buffer);
1369 break;
1372 else
1374 bfd_vma j;
1376 octets = octets_per_line;
1377 if (addr_offset + octets / opb > stop_offset)
1378 octets = (stop_offset - addr_offset) * opb;
1380 for (j = addr_offset * opb; j < addr_offset * opb + octets; ++j)
1382 if (ISPRINT (data[j]))
1383 buf[j - addr_offset * opb] = data[j];
1384 else
1385 buf[j - addr_offset * opb] = '.';
1387 buf[j - addr_offset * opb] = '\0';
1390 if (prefix_addresses
1391 ? show_raw_insn > 0
1392 : show_raw_insn >= 0)
1394 bfd_vma j;
1396 /* If ! prefix_addresses and ! wide_output, we print
1397 octets_per_line octets per line. */
1398 pb = octets;
1399 if (pb > octets_per_line && ! prefix_addresses && ! wide_output)
1400 pb = octets_per_line;
1402 if (info->bytes_per_chunk)
1403 bpc = info->bytes_per_chunk;
1404 else
1405 bpc = 1;
1407 for (j = addr_offset * opb; j < addr_offset * opb + pb; j += bpc)
1409 int k;
1411 if (bpc > 1 && info->display_endian == BFD_ENDIAN_LITTLE)
1413 for (k = bpc - 1; k >= 0; k--)
1414 printf ("%02x", (unsigned) data[j + k]);
1415 putchar (' ');
1417 else
1419 for (k = 0; k < bpc; k++)
1420 printf ("%02x", (unsigned) data[j + k]);
1421 putchar (' ');
1425 for (; pb < octets_per_line; pb += bpc)
1427 int k;
1429 for (k = 0; k < bpc; k++)
1430 printf (" ");
1431 putchar (' ');
1434 /* Separate raw data from instruction by extra space. */
1435 if (insns)
1436 putchar ('\t');
1437 else
1438 printf (" ");
1441 if (! insns)
1442 printf ("%s", buf);
1443 else if (sfile.pos)
1444 printf ("%s", sfile.buffer);
1446 if (prefix_addresses
1447 ? show_raw_insn > 0
1448 : show_raw_insn >= 0)
1450 while (pb < octets)
1452 bfd_vma j;
1453 char *s;
1455 putchar ('\n');
1456 j = addr_offset * opb + pb;
1458 bfd_sprintf_vma (aux->abfd, buf, section->vma + j / opb);
1459 for (s = buf + skip_addr_chars; *s == '0'; s++)
1460 *s = ' ';
1461 if (*s == '\0')
1462 *--s = '0';
1463 printf ("%s:\t", buf + skip_addr_chars);
1465 pb += octets_per_line;
1466 if (pb > octets)
1467 pb = octets;
1468 for (; j < addr_offset * opb + pb; j += bpc)
1470 int k;
1472 if (bpc > 1 && info->display_endian == BFD_ENDIAN_LITTLE)
1474 for (k = bpc - 1; k >= 0; k--)
1475 printf ("%02x", (unsigned) data[j + k]);
1476 putchar (' ');
1478 else
1480 for (k = 0; k < bpc; k++)
1481 printf ("%02x", (unsigned) data[j + k]);
1482 putchar (' ');
1488 if (!wide_output)
1489 putchar ('\n');
1490 else
1491 need_nl = TRUE;
1494 while ((*relppp) < relppend
1495 && (**relppp)->address < rel_offset + addr_offset + octets / opb)
1497 if (dump_reloc_info || dump_dynamic_reloc_info)
1499 arelent *q;
1501 q = **relppp;
1503 if (wide_output)
1504 putchar ('\t');
1505 else
1506 printf ("\t\t\t");
1508 objdump_print_value (section->vma - rel_offset + q->address,
1509 info, TRUE);
1511 printf (": %s\t", q->howto->name);
1513 if (q->sym_ptr_ptr == NULL || *q->sym_ptr_ptr == NULL)
1514 printf ("*unknown*");
1515 else
1517 const char *sym_name;
1519 sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
1520 if (sym_name != NULL && *sym_name != '\0')
1521 objdump_print_symname (aux->abfd, info, *q->sym_ptr_ptr);
1522 else
1524 asection *sym_sec;
1526 sym_sec = bfd_get_section (*q->sym_ptr_ptr);
1527 sym_name = bfd_get_section_name (aux->abfd, sym_sec);
1528 if (sym_name == NULL || *sym_name == '\0')
1529 sym_name = "*unknown*";
1530 printf ("%s", sym_name);
1534 if (q->addend)
1536 printf ("+0x");
1537 objdump_print_value (q->addend, info, TRUE);
1540 printf ("\n");
1541 need_nl = FALSE;
1543 ++(*relppp);
1546 if (need_nl)
1547 printf ("\n");
1549 addr_offset += octets / opb;
1552 free (sfile.buffer);
1555 static void
1556 disassemble_section (bfd *abfd, asection *section, void *info)
1558 struct disassemble_info * pinfo = (struct disassemble_info *) info;
1559 struct objdump_disasm_info * paux;
1560 unsigned int opb = pinfo->octets_per_byte;
1561 bfd_byte * data = NULL;
1562 bfd_size_type datasize = 0;
1563 arelent ** rel_pp = NULL;
1564 arelent ** rel_ppstart = NULL;
1565 arelent ** rel_ppend;
1566 unsigned long stop_offset;
1567 asymbol * sym = NULL;
1568 long place = 0;
1569 long rel_count;
1570 bfd_vma rel_offset;
1571 unsigned long addr_offset;
1573 /* Sections that do not contain machine
1574 code are not normally disassembled. */
1575 if (! disassemble_all
1576 && only == NULL
1577 && ((section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
1578 != (SEC_CODE | SEC_HAS_CONTENTS)))
1579 return;
1581 if (! process_section_p (section))
1582 return;
1584 datasize = bfd_get_section_size (section);
1585 if (datasize == 0)
1586 return;
1588 /* Decide which set of relocs to use. Load them if necessary. */
1589 paux = (struct objdump_disasm_info *) pinfo->application_data;
1590 if (paux->dynrelbuf)
1592 rel_pp = paux->dynrelbuf;
1593 rel_count = paux->dynrelcount;
1594 /* Dynamic reloc addresses are absolute, non-dynamic are section
1595 relative. REL_OFFSET specifies the reloc address corresponding
1596 to the start of this section. */
1597 rel_offset = section->vma;
1599 else
1601 rel_count = 0;
1602 rel_pp = NULL;
1603 rel_offset = 0;
1605 if ((section->flags & SEC_RELOC) != 0
1606 #ifndef DISASSEMBLER_NEEDS_RELOCS
1607 && dump_reloc_info
1608 #endif
1611 long relsize;
1613 relsize = bfd_get_reloc_upper_bound (abfd, section);
1614 if (relsize < 0)
1615 bfd_fatal (bfd_get_filename (abfd));
1617 if (relsize > 0)
1619 rel_ppstart = rel_pp = xmalloc (relsize);
1620 rel_count = bfd_canonicalize_reloc (abfd, section, rel_pp, syms);
1621 if (rel_count < 0)
1622 bfd_fatal (bfd_get_filename (abfd));
1624 /* Sort the relocs by address. */
1625 qsort (rel_pp, rel_count, sizeof (arelent *), compare_relocs);
1630 rel_ppend = rel_pp + rel_count;
1632 data = xmalloc (datasize);
1634 bfd_get_section_contents (abfd, section, data, 0, datasize);
1636 paux->sec = section;
1637 pinfo->buffer = data;
1638 pinfo->buffer_vma = section->vma;
1639 pinfo->buffer_length = datasize;
1640 pinfo->section = section;
1642 if (start_address == (bfd_vma) -1
1643 || start_address < pinfo->buffer_vma)
1644 addr_offset = 0;
1645 else
1646 addr_offset = start_address - pinfo->buffer_vma;
1648 if (stop_address == (bfd_vma) -1)
1649 stop_offset = datasize / opb;
1650 else
1652 if (stop_address < pinfo->buffer_vma)
1653 stop_offset = 0;
1654 else
1655 stop_offset = stop_address - pinfo->buffer_vma;
1656 if (stop_offset > pinfo->buffer_length / opb)
1657 stop_offset = pinfo->buffer_length / opb;
1660 /* Skip over the relocs belonging to addresses below the
1661 start address. */
1662 while (rel_pp < rel_ppend
1663 && (*rel_pp)->address < rel_offset + addr_offset)
1664 ++rel_pp;
1666 printf (_("Disassembly of section %s:\n"), section->name);
1668 /* Find the nearest symbol forwards from our current position. */
1669 paux->require_sec = TRUE;
1670 sym = find_symbol_for_address (section->vma + addr_offset, info, &place);
1671 paux->require_sec = FALSE;
1673 /* Disassemble a block of instructions up to the address associated with
1674 the symbol we have just found. Then print the symbol and find the
1675 next symbol on. Repeat until we have disassembled the entire section
1676 or we have reached the end of the address range we are interested in. */
1677 while (addr_offset < stop_offset)
1679 bfd_vma addr;
1680 asymbol *nextsym;
1681 unsigned long nextstop_offset;
1682 bfd_boolean insns;
1684 addr = section->vma + addr_offset;
1686 if (sym != NULL && bfd_asymbol_value (sym) <= addr)
1688 int x;
1690 for (x = place;
1691 (x < sorted_symcount
1692 && (bfd_asymbol_value (sorted_syms[x]) <= addr));
1693 ++x)
1694 continue;
1696 pinfo->symbols = sorted_syms + place;
1697 pinfo->num_symbols = x - place;
1699 else
1701 pinfo->symbols = NULL;
1702 pinfo->num_symbols = 0;
1705 if (! prefix_addresses)
1707 pinfo->fprintf_func (pinfo->stream, "\n");
1708 objdump_print_addr_with_sym (abfd, section, sym, addr,
1709 pinfo, FALSE);
1710 pinfo->fprintf_func (pinfo->stream, ":\n");
1713 if (sym != NULL && bfd_asymbol_value (sym) > addr)
1714 nextsym = sym;
1715 else if (sym == NULL)
1716 nextsym = NULL;
1717 else
1719 #define is_valid_next_sym(SYM) \
1720 ((SYM)->section == section \
1721 && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
1722 && pinfo->symbol_is_valid (SYM, pinfo))
1724 /* Search forward for the next appropriate symbol in
1725 SECTION. Note that all the symbols are sorted
1726 together into one big array, and that some sections
1727 may have overlapping addresses. */
1728 while (place < sorted_symcount
1729 && ! is_valid_next_sym (sorted_syms [place]))
1730 ++place;
1732 if (place >= sorted_symcount)
1733 nextsym = NULL;
1734 else
1735 nextsym = sorted_syms[place];
1738 if (sym != NULL && bfd_asymbol_value (sym) > addr)
1739 nextstop_offset = bfd_asymbol_value (sym) - section->vma;
1740 else if (nextsym == NULL)
1741 nextstop_offset = stop_offset;
1742 else
1743 nextstop_offset = bfd_asymbol_value (nextsym) - section->vma;
1745 if (nextstop_offset > stop_offset)
1746 nextstop_offset = stop_offset;
1748 /* If a symbol is explicitly marked as being an object
1749 rather than a function, just dump the bytes without
1750 disassembling them. */
1751 if (disassemble_all
1752 || sym == NULL
1753 || bfd_asymbol_value (sym) > addr
1754 || ((sym->flags & BSF_OBJECT) == 0
1755 && (strstr (bfd_asymbol_name (sym), "gnu_compiled")
1756 == NULL)
1757 && (strstr (bfd_asymbol_name (sym), "gcc2_compiled")
1758 == NULL))
1759 || (sym->flags & BSF_FUNCTION) != 0)
1760 insns = TRUE;
1761 else
1762 insns = FALSE;
1764 disassemble_bytes (pinfo, paux->disassemble_fn, insns, data,
1765 addr_offset, nextstop_offset,
1766 rel_offset, &rel_pp, rel_ppend);
1768 addr_offset = nextstop_offset;
1769 sym = nextsym;
1772 free (data);
1774 if (rel_ppstart != NULL)
1775 free (rel_ppstart);
1778 /* Disassemble the contents of an object file. */
1780 static void
1781 disassemble_data (bfd *abfd)
1783 struct disassemble_info disasm_info;
1784 struct objdump_disasm_info aux;
1785 long i;
1787 print_files = NULL;
1788 prev_functionname = NULL;
1789 prev_line = -1;
1791 /* We make a copy of syms to sort. We don't want to sort syms
1792 because that will screw up the relocs. */
1793 sorted_symcount = symcount ? symcount : dynsymcount;
1794 sorted_syms = xmalloc ((sorted_symcount + synthcount) * sizeof (asymbol *));
1795 memcpy (sorted_syms, symcount ? syms : dynsyms,
1796 sorted_symcount * sizeof (asymbol *));
1798 sorted_symcount = remove_useless_symbols (sorted_syms, sorted_symcount);
1800 for (i = 0; i < synthcount; ++i)
1802 sorted_syms[sorted_symcount] = synthsyms + i;
1803 ++sorted_symcount;
1806 /* Sort the symbols into section and symbol order. */
1807 qsort (sorted_syms, sorted_symcount, sizeof (asymbol *), compare_symbols);
1809 init_disassemble_info (&disasm_info, stdout, (fprintf_ftype) fprintf);
1811 disasm_info.application_data = (void *) &aux;
1812 aux.abfd = abfd;
1813 aux.require_sec = FALSE;
1814 aux.dynrelbuf = NULL;
1815 aux.dynrelcount = 0;
1817 disasm_info.print_address_func = objdump_print_address;
1818 disasm_info.symbol_at_address_func = objdump_symbol_at_address;
1820 if (machine != NULL)
1822 const bfd_arch_info_type *info = bfd_scan_arch (machine);
1824 if (info == NULL)
1825 fatal (_("Can't use supplied machine %s"), machine);
1827 abfd->arch_info = info;
1830 if (endian != BFD_ENDIAN_UNKNOWN)
1832 struct bfd_target *xvec;
1834 xvec = xmalloc (sizeof (struct bfd_target));
1835 memcpy (xvec, abfd->xvec, sizeof (struct bfd_target));
1836 xvec->byteorder = endian;
1837 abfd->xvec = xvec;
1840 /* Use libopcodes to locate a suitable disassembler. */
1841 aux.disassemble_fn = disassembler (abfd);
1842 if (!aux.disassemble_fn)
1844 non_fatal (_("Can't disassemble for architecture %s\n"),
1845 bfd_printable_arch_mach (bfd_get_arch (abfd), 0));
1846 exit_status = 1;
1847 return;
1850 disasm_info.flavour = bfd_get_flavour (abfd);
1851 disasm_info.arch = bfd_get_arch (abfd);
1852 disasm_info.mach = bfd_get_mach (abfd);
1853 disasm_info.disassembler_options = disassembler_options;
1854 disasm_info.octets_per_byte = bfd_octets_per_byte (abfd);
1856 if (bfd_big_endian (abfd))
1857 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_BIG;
1858 else if (bfd_little_endian (abfd))
1859 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_LITTLE;
1860 else
1861 /* ??? Aborting here seems too drastic. We could default to big or little
1862 instead. */
1863 disasm_info.endian = BFD_ENDIAN_UNKNOWN;
1865 /* Allow the target to customize the info structure. */
1866 disassemble_init_for_target (& disasm_info);
1868 /* Pre-load the dynamic relocs if we are going
1869 to be dumping them along with the disassembly. */
1870 if (dump_dynamic_reloc_info)
1872 long relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
1874 if (relsize < 0)
1875 bfd_fatal (bfd_get_filename (abfd));
1877 if (relsize > 0)
1879 aux.dynrelbuf = xmalloc (relsize);
1880 aux.dynrelcount = bfd_canonicalize_dynamic_reloc (abfd,
1881 aux.dynrelbuf,
1882 dynsyms);
1883 if (aux.dynrelcount < 0)
1884 bfd_fatal (bfd_get_filename (abfd));
1886 /* Sort the relocs by address. */
1887 qsort (aux.dynrelbuf, aux.dynrelcount, sizeof (arelent *),
1888 compare_relocs);
1892 bfd_map_over_sections (abfd, disassemble_section, & disasm_info);
1894 if (aux.dynrelbuf != NULL)
1895 free (aux.dynrelbuf);
1896 free (sorted_syms);
1899 /* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
1900 it. Return NULL on failure. */
1902 static char *
1903 read_section_stabs (bfd *abfd, const char *sect_name, bfd_size_type *size_ptr)
1905 asection *stabsect;
1906 bfd_size_type size;
1907 char *contents;
1909 stabsect = bfd_get_section_by_name (abfd, sect_name);
1910 if (stabsect == NULL)
1912 printf (_("No %s section present\n\n"), sect_name);
1913 return FALSE;
1916 size = bfd_section_size (abfd, stabsect);
1917 contents = xmalloc (size);
1919 if (! bfd_get_section_contents (abfd, stabsect, contents, 0, size))
1921 non_fatal (_("Reading %s section of %s failed: %s"),
1922 sect_name, bfd_get_filename (abfd),
1923 bfd_errmsg (bfd_get_error ()));
1924 free (contents);
1925 exit_status = 1;
1926 return NULL;
1929 *size_ptr = size;
1931 return contents;
1934 /* Stabs entries use a 12 byte format:
1935 4 byte string table index
1936 1 byte stab type
1937 1 byte stab other field
1938 2 byte stab desc field
1939 4 byte stab value
1940 FIXME: This will have to change for a 64 bit object format. */
1942 #define STRDXOFF (0)
1943 #define TYPEOFF (4)
1944 #define OTHEROFF (5)
1945 #define DESCOFF (6)
1946 #define VALOFF (8)
1947 #define STABSIZE (12)
1949 /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
1950 using string table section STRSECT_NAME (in `strtab'). */
1952 static void
1953 print_section_stabs (bfd *abfd,
1954 const char *stabsect_name,
1955 unsigned *string_offset_ptr)
1957 int i;
1958 unsigned file_string_table_offset = 0;
1959 unsigned next_file_string_table_offset = *string_offset_ptr;
1960 bfd_byte *stabp, *stabs_end;
1962 stabp = stabs;
1963 stabs_end = stabp + stab_size;
1965 printf (_("Contents of %s section:\n\n"), stabsect_name);
1966 printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
1968 /* Loop through all symbols and print them.
1970 We start the index at -1 because there is a dummy symbol on
1971 the front of stabs-in-{coff,elf} sections that supplies sizes. */
1972 for (i = -1; stabp < stabs_end; stabp += STABSIZE, i++)
1974 const char *name;
1975 unsigned long strx;
1976 unsigned char type, other;
1977 unsigned short desc;
1978 bfd_vma value;
1980 strx = bfd_h_get_32 (abfd, stabp + STRDXOFF);
1981 type = bfd_h_get_8 (abfd, stabp + TYPEOFF);
1982 other = bfd_h_get_8 (abfd, stabp + OTHEROFF);
1983 desc = bfd_h_get_16 (abfd, stabp + DESCOFF);
1984 value = bfd_h_get_32 (abfd, stabp + VALOFF);
1986 printf ("\n%-6d ", i);
1987 /* Either print the stab name, or, if unnamed, print its number
1988 again (makes consistent formatting for tools like awk). */
1989 name = bfd_get_stab_name (type);
1990 if (name != NULL)
1991 printf ("%-6s", name);
1992 else if (type == N_UNDF)
1993 printf ("HdrSym");
1994 else
1995 printf ("%-6d", type);
1996 printf (" %-6d %-6d ", other, desc);
1997 bfd_printf_vma (abfd, value);
1998 printf (" %-6lu", strx);
2000 /* Symbols with type == 0 (N_UNDF) specify the length of the
2001 string table associated with this file. We use that info
2002 to know how to relocate the *next* file's string table indices. */
2003 if (type == N_UNDF)
2005 file_string_table_offset = next_file_string_table_offset;
2006 next_file_string_table_offset += value;
2008 else
2010 /* Using the (possibly updated) string table offset, print the
2011 string (if any) associated with this symbol. */
2012 if ((strx + file_string_table_offset) < stabstr_size)
2013 printf (" %s", &strtab[strx + file_string_table_offset]);
2014 else
2015 printf (" *");
2018 printf ("\n\n");
2019 *string_offset_ptr = next_file_string_table_offset;
2022 typedef struct
2024 const char * section_name;
2025 const char * string_section_name;
2026 unsigned string_offset;
2028 stab_section_names;
2030 static void
2031 find_stabs_section (bfd *abfd, asection *section, void *names)
2033 int len;
2034 stab_section_names * sought = (stab_section_names *) names;
2036 /* Check for section names for which stabsect_name is a prefix, to
2037 handle .stab.N, etc. */
2038 len = strlen (sought->section_name);
2040 /* If the prefix matches, and the files section name ends with a
2041 nul or a digit, then we match. I.e., we want either an exact
2042 match or a section followed by a number. */
2043 if (strncmp (sought->section_name, section->name, len) == 0
2044 && (section->name[len] == 0
2045 || (section->name[len] == '.' && ISDIGIT (section->name[len + 1]))))
2047 if (strtab == NULL)
2048 strtab = read_section_stabs (abfd, sought->string_section_name,
2049 &stabstr_size);
2051 if (strtab)
2053 stabs = read_section_stabs (abfd, section->name, &stab_size);
2054 if (stabs)
2055 print_section_stabs (abfd, section->name, &sought->string_offset);
2060 static void
2061 dump_stabs_section (bfd *abfd, char *stabsect_name, char *strsect_name)
2063 stab_section_names s;
2065 s.section_name = stabsect_name;
2066 s.string_section_name = strsect_name;
2067 s.string_offset = 0;
2069 bfd_map_over_sections (abfd, find_stabs_section, & s);
2071 free (strtab);
2072 strtab = NULL;
2075 /* Dump the any sections containing stabs debugging information. */
2077 static void
2078 dump_stabs (bfd *abfd)
2080 dump_stabs_section (abfd, ".stab", ".stabstr");
2081 dump_stabs_section (abfd, ".stab.excl", ".stab.exclstr");
2082 dump_stabs_section (abfd, ".stab.index", ".stab.indexstr");
2083 dump_stabs_section (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
2086 static void
2087 dump_bfd_header (bfd *abfd)
2089 char *comma = "";
2091 printf (_("architecture: %s, "),
2092 bfd_printable_arch_mach (bfd_get_arch (abfd),
2093 bfd_get_mach (abfd)));
2094 printf (_("flags 0x%08x:\n"), abfd->flags);
2096 #define PF(x, y) if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
2097 PF (HAS_RELOC, "HAS_RELOC");
2098 PF (EXEC_P, "EXEC_P");
2099 PF (HAS_LINENO, "HAS_LINENO");
2100 PF (HAS_DEBUG, "HAS_DEBUG");
2101 PF (HAS_SYMS, "HAS_SYMS");
2102 PF (HAS_LOCALS, "HAS_LOCALS");
2103 PF (DYNAMIC, "DYNAMIC");
2104 PF (WP_TEXT, "WP_TEXT");
2105 PF (D_PAGED, "D_PAGED");
2106 PF (BFD_IS_RELAXABLE, "BFD_IS_RELAXABLE");
2107 PF (HAS_LOAD_PAGE, "HAS_LOAD_PAGE");
2108 printf (_("\nstart address 0x"));
2109 bfd_printf_vma (abfd, abfd->start_address);
2110 printf ("\n");
2114 static void
2115 dump_bfd_private_header (bfd *abfd)
2117 bfd_print_private_bfd_data (abfd, stdout);
2121 /* Display a section in hexadecimal format with associated characters.
2122 Each line prefixed by the zero padded address. */
2124 static void
2125 dump_section (bfd *abfd, asection *section, void *dummy ATTRIBUTE_UNUSED)
2127 bfd_byte *data = 0;
2128 bfd_size_type datasize;
2129 bfd_size_type addr_offset;
2130 bfd_size_type start_offset;
2131 bfd_size_type stop_offset;
2132 unsigned int opb = bfd_octets_per_byte (abfd);
2133 /* Bytes per line. */
2134 const int onaline = 16;
2135 char buf[64];
2136 int count;
2137 int width;
2139 if ((section->flags & SEC_HAS_CONTENTS) == 0)
2140 return;
2142 if (! process_section_p (section))
2143 return;
2145 if ((datasize = bfd_section_size (abfd, section)) == 0)
2146 return;
2148 printf (_("Contents of section %s:\n"), section->name);
2150 data = xmalloc (datasize);
2152 bfd_get_section_contents (abfd, section, data, 0, datasize);
2154 /* Compute the address range to display. */
2155 if (start_address == (bfd_vma) -1
2156 || start_address < section->vma)
2157 start_offset = 0;
2158 else
2159 start_offset = start_address - section->vma;
2161 if (stop_address == (bfd_vma) -1)
2162 stop_offset = datasize / opb;
2163 else
2165 if (stop_address < section->vma)
2166 stop_offset = 0;
2167 else
2168 stop_offset = stop_address - section->vma;
2170 if (stop_offset > datasize / opb)
2171 stop_offset = datasize / opb;
2174 width = 4;
2176 bfd_sprintf_vma (abfd, buf, start_offset + section->vma);
2177 if (strlen (buf) >= sizeof (buf))
2178 abort ();
2180 count = 0;
2181 while (buf[count] == '0' && buf[count+1] != '\0')
2182 count++;
2183 count = strlen (buf) - count;
2184 if (count > width)
2185 width = count;
2187 bfd_sprintf_vma (abfd, buf, stop_offset + section->vma - 1);
2188 if (strlen (buf) >= sizeof (buf))
2189 abort ();
2191 count = 0;
2192 while (buf[count] == '0' && buf[count+1] != '\0')
2193 count++;
2194 count = strlen (buf) - count;
2195 if (count > width)
2196 width = count;
2198 for (addr_offset = start_offset;
2199 addr_offset < stop_offset; addr_offset += onaline / opb)
2201 bfd_size_type j;
2203 bfd_sprintf_vma (abfd, buf, (addr_offset + section->vma));
2204 count = strlen (buf);
2205 if ((size_t) count >= sizeof (buf))
2206 abort ();
2208 putchar (' ');
2209 while (count < width)
2211 putchar ('0');
2212 count++;
2214 fputs (buf + count - width, stdout);
2215 putchar (' ');
2217 for (j = addr_offset * opb;
2218 j < addr_offset * opb + onaline; j++)
2220 if (j < stop_offset * opb)
2221 printf ("%02x", (unsigned) (data[j]));
2222 else
2223 printf (" ");
2224 if ((j & 3) == 3)
2225 printf (" ");
2228 printf (" ");
2229 for (j = addr_offset * opb;
2230 j < addr_offset * opb + onaline; j++)
2232 if (j >= stop_offset * opb)
2233 printf (" ");
2234 else
2235 printf ("%c", ISPRINT (data[j]) ? data[j] : '.');
2237 putchar ('\n');
2239 free (data);
2242 /* Actually display the various requested regions. */
2244 static void
2245 dump_data (bfd *abfd)
2247 bfd_map_over_sections (abfd, dump_section, NULL);
2250 /* Should perhaps share code and display with nm? */
2252 static void
2253 dump_symbols (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean dynamic)
2255 asymbol **current;
2256 long max;
2257 long count;
2259 if (dynamic)
2261 current = dynsyms;
2262 max = dynsymcount;
2263 printf ("DYNAMIC SYMBOL TABLE:\n");
2265 else
2267 current = syms;
2268 max = symcount;
2269 printf ("SYMBOL TABLE:\n");
2272 if (max == 0)
2273 printf (_("no symbols\n"));
2275 for (count = 0; count < max; count++)
2277 bfd *cur_bfd;
2279 if (*current == NULL)
2280 printf (_("no information for the %ld'th symbol"), count);
2282 else if ((cur_bfd = bfd_asymbol_bfd (*current)) == NULL)
2283 printf (_("could not determine the type of the %ld'th symbol"),
2284 count);
2286 else
2288 const char *name = (*current)->name;
2290 if (do_demangle && name != NULL && *name != '\0')
2292 char *alloc;
2294 /* If we want to demangle the name, we demangle it
2295 here, and temporarily clobber it while calling
2296 bfd_print_symbol. FIXME: This is a gross hack. */
2297 alloc = demangle (cur_bfd, name);
2298 (*current)->name = alloc;
2299 bfd_print_symbol (cur_bfd, stdout, *current,
2300 bfd_print_symbol_all);
2301 (*current)->name = name;
2302 free (alloc);
2304 else
2305 bfd_print_symbol (cur_bfd, stdout, *current,
2306 bfd_print_symbol_all);
2309 printf ("\n");
2310 current++;
2312 printf ("\n\n");
2315 static void
2316 dump_reloc_set (bfd *abfd, asection *sec, arelent **relpp, long relcount)
2318 arelent **p;
2319 char *last_filename, *last_functionname;
2320 unsigned int last_line;
2322 /* Get column headers lined up reasonably. */
2324 static int width;
2326 if (width == 0)
2328 char buf[30];
2330 bfd_sprintf_vma (abfd, buf, (bfd_vma) -1);
2331 width = strlen (buf) - 7;
2333 printf ("OFFSET %*s TYPE %*s VALUE \n", width, "", 12, "");
2336 last_filename = NULL;
2337 last_functionname = NULL;
2338 last_line = 0;
2340 for (p = relpp; relcount && *p != NULL; p++, relcount--)
2342 arelent *q = *p;
2343 const char *filename, *functionname;
2344 unsigned int line;
2345 const char *sym_name;
2346 const char *section_name;
2348 if (start_address != (bfd_vma) -1
2349 && q->address < start_address)
2350 continue;
2351 if (stop_address != (bfd_vma) -1
2352 && q->address > stop_address)
2353 continue;
2355 if (with_line_numbers
2356 && sec != NULL
2357 && bfd_find_nearest_line (abfd, sec, syms, q->address,
2358 &filename, &functionname, &line))
2360 if (functionname != NULL
2361 && (last_functionname == NULL
2362 || strcmp (functionname, last_functionname) != 0))
2364 printf ("%s():\n", functionname);
2365 if (last_functionname != NULL)
2366 free (last_functionname);
2367 last_functionname = xstrdup (functionname);
2370 if (line > 0
2371 && (line != last_line
2372 || (filename != NULL
2373 && last_filename != NULL
2374 && strcmp (filename, last_filename) != 0)))
2376 printf ("%s:%u\n", filename == NULL ? "???" : filename, line);
2377 last_line = line;
2378 if (last_filename != NULL)
2379 free (last_filename);
2380 if (filename == NULL)
2381 last_filename = NULL;
2382 else
2383 last_filename = xstrdup (filename);
2387 if (q->sym_ptr_ptr && *q->sym_ptr_ptr)
2389 sym_name = (*(q->sym_ptr_ptr))->name;
2390 section_name = (*(q->sym_ptr_ptr))->section->name;
2392 else
2394 sym_name = NULL;
2395 section_name = NULL;
2398 if (sym_name)
2400 bfd_printf_vma (abfd, q->address);
2401 if (q->howto->name)
2402 printf (" %-16s ", q->howto->name);
2403 else
2404 printf (" %-16d ", q->howto->type);
2405 objdump_print_symname (abfd, NULL, *q->sym_ptr_ptr);
2407 else
2409 if (section_name == NULL)
2410 section_name = "*unknown*";
2411 bfd_printf_vma (abfd, q->address);
2412 printf (" %-16s [%s]",
2413 q->howto->name,
2414 section_name);
2417 if (q->addend)
2419 printf ("+0x");
2420 bfd_printf_vma (abfd, q->addend);
2423 printf ("\n");
2427 static void
2428 dump_relocs_in_section (bfd *abfd,
2429 asection *section,
2430 void *dummy ATTRIBUTE_UNUSED)
2432 arelent **relpp;
2433 long relcount;
2434 long relsize;
2436 if ( bfd_is_abs_section (section)
2437 || bfd_is_und_section (section)
2438 || bfd_is_com_section (section)
2439 || (! process_section_p (section))
2440 || ((section->flags & SEC_RELOC) == 0))
2441 return;
2443 relsize = bfd_get_reloc_upper_bound (abfd, section);
2444 if (relsize < 0)
2445 bfd_fatal (bfd_get_filename (abfd));
2447 printf ("RELOCATION RECORDS FOR [%s]:", section->name);
2449 if (relsize == 0)
2451 printf (" (none)\n\n");
2452 return;
2455 relpp = xmalloc (relsize);
2456 relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
2458 if (relcount < 0)
2459 bfd_fatal (bfd_get_filename (abfd));
2460 else if (relcount == 0)
2461 printf (" (none)\n\n");
2462 else
2464 printf ("\n");
2465 dump_reloc_set (abfd, section, relpp, relcount);
2466 printf ("\n\n");
2468 free (relpp);
2471 static void
2472 dump_relocs (bfd *abfd)
2474 bfd_map_over_sections (abfd, dump_relocs_in_section, NULL);
2477 static void
2478 dump_dynamic_relocs (bfd *abfd)
2480 long relsize;
2481 arelent **relpp;
2482 long relcount;
2484 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2485 if (relsize < 0)
2486 bfd_fatal (bfd_get_filename (abfd));
2488 printf ("DYNAMIC RELOCATION RECORDS");
2490 if (relsize == 0)
2491 printf (" (none)\n\n");
2492 else
2494 relpp = xmalloc (relsize);
2495 relcount = bfd_canonicalize_dynamic_reloc (abfd, relpp, dynsyms);
2497 if (relcount < 0)
2498 bfd_fatal (bfd_get_filename (abfd));
2499 else if (relcount == 0)
2500 printf (" (none)\n\n");
2501 else
2503 printf ("\n");
2504 dump_reloc_set (abfd, NULL, relpp, relcount);
2505 printf ("\n\n");
2507 free (relpp);
2511 /* Creates a table of paths, to search for source files. */
2513 static void
2514 add_include_path (const char *path)
2516 if (path[0] == 0)
2517 return;
2518 include_path_count++;
2519 include_paths = xrealloc (include_paths,
2520 include_path_count * sizeof (*include_paths));
2521 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2522 if (path[1] == ':' && path[2] == 0)
2523 path = concat (path, ".", (const char *) 0);
2524 #endif
2525 include_paths[include_path_count - 1] = path;
2528 static void
2529 adjust_addresses (bfd *abfd ATTRIBUTE_UNUSED,
2530 asection *section,
2531 void *dummy ATTRIBUTE_UNUSED)
2533 section->vma += adjust_section_vma;
2534 section->lma += adjust_section_vma;
2537 /* Dump selected contents of ABFD. */
2539 static void
2540 dump_bfd (bfd *abfd)
2542 /* If we are adjusting section VMA's, change them all now. Changing
2543 the BFD information is a hack. However, we must do it, or
2544 bfd_find_nearest_line will not do the right thing. */
2545 if (adjust_section_vma != 0)
2546 bfd_map_over_sections (abfd, adjust_addresses, NULL);
2548 if (! dump_debugging_tags)
2549 printf (_("\n%s: file format %s\n"), bfd_get_filename (abfd),
2550 abfd->xvec->name);
2551 if (dump_ar_hdrs)
2552 print_arelt_descr (stdout, abfd, TRUE);
2553 if (dump_file_header)
2554 dump_bfd_header (abfd);
2555 if (dump_private_headers)
2556 dump_bfd_private_header (abfd);
2557 if (! dump_debugging_tags)
2558 putchar ('\n');
2559 if (dump_section_headers)
2560 dump_headers (abfd);
2562 if (dump_symtab || dump_reloc_info || disassemble || dump_debugging)
2563 syms = slurp_symtab (abfd);
2564 if (dump_dynamic_symtab || dump_dynamic_reloc_info
2565 || (disassemble && bfd_get_dynamic_symtab_upper_bound (abfd) > 0))
2566 dynsyms = slurp_dynamic_symtab (abfd);
2567 if (disassemble && dynsymcount > 0)
2569 synthcount = bfd_get_synthetic_symtab (abfd, dynsyms, &synthsyms);
2570 if (synthcount < 0) synthcount = 0;
2573 if (dump_symtab)
2574 dump_symbols (abfd, FALSE);
2575 if (dump_dynamic_symtab)
2576 dump_symbols (abfd, TRUE);
2577 if (dump_stab_section_info)
2578 dump_stabs (abfd);
2579 if (dump_reloc_info && ! disassemble)
2580 dump_relocs (abfd);
2581 if (dump_dynamic_reloc_info && ! disassemble)
2582 dump_dynamic_relocs (abfd);
2583 if (dump_section_contents)
2584 dump_data (abfd);
2585 if (disassemble)
2586 disassemble_data (abfd);
2588 if (dump_debugging)
2590 void *dhandle;
2592 dhandle = read_debugging_info (abfd, syms, symcount);
2593 if (dhandle != NULL)
2595 if (! print_debugging_info (stdout, dhandle, abfd, syms, demangle,
2596 dump_debugging_tags ? TRUE : FALSE))
2598 non_fatal (_("%s: printing debugging information failed"),
2599 bfd_get_filename (abfd));
2600 exit_status = 1;
2605 if (syms)
2607 free (syms);
2608 syms = NULL;
2611 if (dynsyms)
2613 free (dynsyms);
2614 dynsyms = NULL;
2617 if (synthsyms)
2619 free (synthsyms);
2620 synthsyms = NULL;
2623 symcount = 0;
2624 dynsymcount = 0;
2625 synthcount = 0;
2628 static void
2629 display_bfd (bfd *abfd)
2631 char **matching;
2633 if (bfd_check_format_matches (abfd, bfd_object, &matching))
2635 dump_bfd (abfd);
2636 return;
2639 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
2641 nonfatal (bfd_get_filename (abfd));
2642 list_matching_formats (matching);
2643 free (matching);
2644 return;
2647 if (bfd_get_error () != bfd_error_file_not_recognized)
2649 nonfatal (bfd_get_filename (abfd));
2650 return;
2653 if (bfd_check_format_matches (abfd, bfd_core, &matching))
2655 dump_bfd (abfd);
2656 return;
2659 nonfatal (bfd_get_filename (abfd));
2661 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
2663 list_matching_formats (matching);
2664 free (matching);
2668 static void
2669 display_file (char *filename, char *target)
2671 bfd *file;
2672 bfd *arfile = NULL;
2674 if (get_file_size (filename) < 1)
2675 return;
2677 file = bfd_openr (filename, target);
2678 if (file == NULL)
2680 nonfatal (filename);
2681 return;
2684 /* If the file is an archive, process all of its elements. */
2685 if (bfd_check_format (file, bfd_archive))
2687 bfd *last_arfile = NULL;
2689 printf (_("In archive %s:\n"), bfd_get_filename (file));
2690 for (;;)
2692 bfd_set_error (bfd_error_no_error);
2694 arfile = bfd_openr_next_archived_file (file, arfile);
2695 if (arfile == NULL)
2697 if (bfd_get_error () != bfd_error_no_more_archived_files)
2698 nonfatal (bfd_get_filename (file));
2699 break;
2702 display_bfd (arfile);
2704 if (last_arfile != NULL)
2705 bfd_close (last_arfile);
2706 last_arfile = arfile;
2709 if (last_arfile != NULL)
2710 bfd_close (last_arfile);
2712 else
2713 display_bfd (file);
2715 bfd_close (file);
2719 main (int argc, char **argv)
2721 int c;
2722 char *target = default_target;
2723 bfd_boolean seenflag = FALSE;
2725 #if defined (HAVE_SETLOCALE)
2726 #if defined (HAVE_LC_MESSAGES)
2727 setlocale (LC_MESSAGES, "");
2728 #endif
2729 setlocale (LC_CTYPE, "");
2730 #endif
2732 bindtextdomain (PACKAGE, LOCALEDIR);
2733 textdomain (PACKAGE);
2735 program_name = *argv;
2736 xmalloc_set_program_name (program_name);
2738 START_PROGRESS (program_name, 0);
2740 bfd_init ();
2741 set_default_bfd_target ();
2743 while ((c = getopt_long (argc, argv, "pib:m:M:VvCdDlfaHhrRtTxsSI:j:wE:zgeG",
2744 long_options, (int *) 0))
2745 != EOF)
2747 switch (c)
2749 case 0:
2750 break; /* We've been given a long option. */
2751 case 'm':
2752 machine = optarg;
2753 break;
2754 case 'M':
2755 if (disassembler_options)
2756 /* Ignore potential memory leak for now. */
2757 disassembler_options = concat (disassembler_options, ",",
2758 optarg, NULL);
2759 else
2760 disassembler_options = optarg;
2761 break;
2762 case 'j':
2763 if (only_used == only_size)
2765 only_size += 8;
2766 only = xrealloc (only, only_size * sizeof (char *));
2768 only [only_used++] = optarg;
2769 break;
2770 case 'l':
2771 with_line_numbers = TRUE;
2772 break;
2773 case 'b':
2774 target = optarg;
2775 break;
2776 case 'C':
2777 do_demangle = TRUE;
2778 if (optarg != NULL)
2780 enum demangling_styles style;
2782 style = cplus_demangle_name_to_style (optarg);
2783 if (style == unknown_demangling)
2784 fatal (_("unknown demangling style `%s'"),
2785 optarg);
2787 cplus_demangle_set_style (style);
2789 break;
2790 case 'w':
2791 wide_output = TRUE;
2792 break;
2793 case OPTION_ADJUST_VMA:
2794 adjust_section_vma = parse_vma (optarg, "--adjust-vma");
2795 break;
2796 case OPTION_START_ADDRESS:
2797 start_address = parse_vma (optarg, "--start-address");
2798 break;
2799 case OPTION_STOP_ADDRESS:
2800 stop_address = parse_vma (optarg, "--stop-address");
2801 break;
2802 case 'E':
2803 if (strcmp (optarg, "B") == 0)
2804 endian = BFD_ENDIAN_BIG;
2805 else if (strcmp (optarg, "L") == 0)
2806 endian = BFD_ENDIAN_LITTLE;
2807 else
2809 non_fatal (_("unrecognized -E option"));
2810 usage (stderr, 1);
2812 break;
2813 case OPTION_ENDIAN:
2814 if (strncmp (optarg, "big", strlen (optarg)) == 0)
2815 endian = BFD_ENDIAN_BIG;
2816 else if (strncmp (optarg, "little", strlen (optarg)) == 0)
2817 endian = BFD_ENDIAN_LITTLE;
2818 else
2820 non_fatal (_("unrecognized --endian type `%s'"), optarg);
2821 usage (stderr, 1);
2823 break;
2825 case 'f':
2826 dump_file_header = TRUE;
2827 seenflag = TRUE;
2828 break;
2829 case 'i':
2830 formats_info = TRUE;
2831 seenflag = TRUE;
2832 break;
2833 case 'I':
2834 add_include_path (optarg);
2835 break;
2836 case 'p':
2837 dump_private_headers = TRUE;
2838 seenflag = TRUE;
2839 break;
2840 case 'x':
2841 dump_private_headers = TRUE;
2842 dump_symtab = TRUE;
2843 dump_reloc_info = TRUE;
2844 dump_file_header = TRUE;
2845 dump_ar_hdrs = TRUE;
2846 dump_section_headers = TRUE;
2847 seenflag = TRUE;
2848 break;
2849 case 't':
2850 dump_symtab = TRUE;
2851 seenflag = TRUE;
2852 break;
2853 case 'T':
2854 dump_dynamic_symtab = TRUE;
2855 seenflag = TRUE;
2856 break;
2857 case 'd':
2858 disassemble = TRUE;
2859 seenflag = TRUE;
2860 break;
2861 case 'z':
2862 disassemble_zeroes = TRUE;
2863 break;
2864 case 'D':
2865 disassemble = TRUE;
2866 disassemble_all = TRUE;
2867 seenflag = TRUE;
2868 break;
2869 case 'S':
2870 disassemble = TRUE;
2871 with_source_code = TRUE;
2872 seenflag = TRUE;
2873 break;
2874 case 'g':
2875 dump_debugging = 1;
2876 seenflag = TRUE;
2877 break;
2878 case 'e':
2879 dump_debugging = 1;
2880 dump_debugging_tags = 1;
2881 do_demangle = TRUE;
2882 seenflag = TRUE;
2883 break;
2884 case 'G':
2885 dump_stab_section_info = TRUE;
2886 seenflag = TRUE;
2887 break;
2888 case 's':
2889 dump_section_contents = TRUE;
2890 seenflag = TRUE;
2891 break;
2892 case 'r':
2893 dump_reloc_info = TRUE;
2894 seenflag = TRUE;
2895 break;
2896 case 'R':
2897 dump_dynamic_reloc_info = TRUE;
2898 seenflag = TRUE;
2899 break;
2900 case 'a':
2901 dump_ar_hdrs = TRUE;
2902 seenflag = TRUE;
2903 break;
2904 case 'h':
2905 dump_section_headers = TRUE;
2906 seenflag = TRUE;
2907 break;
2908 case 'H':
2909 usage (stdout, 0);
2910 seenflag = TRUE;
2911 case 'v':
2912 case 'V':
2913 show_version = TRUE;
2914 seenflag = TRUE;
2915 break;
2917 default:
2918 usage (stderr, 1);
2922 if (show_version)
2923 print_version ("objdump");
2925 if (!seenflag)
2926 usage (stderr, 2);
2928 if (formats_info)
2929 exit_status = display_info ();
2930 else
2932 if (optind == argc)
2933 display_file ("a.out", target);
2934 else
2935 for (; optind < argc;)
2936 display_file (argv[optind++], target);
2939 END_PROGRESS (program_name);
2941 return exit_status;