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[/] [openrisc/] [trunk/] [gnu-old/] [binutils-2.18.50/] [binutils/] [objdump.c] - Blame information for rev 868

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/* objdump.c -- dump information about an object file.
2
   Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3
   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
4
   Free Software Foundation, Inc.
5
 
6
   This file is part of GNU Binutils.
7
 
8
   This program is free software; you can redistribute it and/or modify
9
   it under the terms of the GNU General Public License as published by
10
   the Free Software Foundation; either version 3, or (at your option)
11
   any later version.
12
 
13
   This program is distributed in the hope that it will be useful,
14
   but WITHOUT ANY WARRANTY; without even the implied warranty of
15
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16
   GNU General Public License for more details.
17
 
18
   You should have received a copy of the GNU General Public License
19
   along with this program; if not, write to the Free Software
20
   Foundation, 51 Franklin Street - Fifth Floor, Boston,
21
   MA 02110-1301, USA.  */
22
 
23
 
24
/* Objdump overview.
25
 
26
   Objdump displays information about one or more object files, either on
27
   their own, or inside libraries.  It is commonly used as a disassembler,
28
   but it can also display information about file headers, symbol tables,
29
   relocations, debugging directives and more.
30
 
31
   The flow of execution is as follows:
32
 
33
   1. Command line arguments are checked for control switches and the
34
      information to be displayed is selected.
35
 
36
   2. Any remaining arguments are assumed to be object files, and they are
37
      processed in order by display_bfd().  If the file is an archive each
38
      of its elements is processed in turn.
39
 
40
   3. The file's target architecture and binary file format are determined
41
      by bfd_check_format().  If they are recognised, then dump_bfd() is
42
      called.
43
 
44
   4. dump_bfd() in turn calls separate functions to display the requested
45
      item(s) of information(s).  For example disassemble_data() is called if
46
      a disassembly has been requested.
47
 
48
   When disassembling the code loops through blocks of instructions bounded
49
   by symbols, calling disassemble_bytes() on each block.  The actual
50
   disassembling is done by the libopcodes library, via a function pointer
51
   supplied by the disassembler() function.  */
52
 
53
#include "sysdep.h"
54
#include "bfd.h"
55
#include "elf-bfd.h"
56
#include "progress.h"
57
#include "bucomm.h"
58
#include "dwarf.h"
59
#include "getopt.h"
60
#include "safe-ctype.h"
61
#include "dis-asm.h"
62
#include "libiberty.h"
63
#include "demangle.h"
64
#include "debug.h"
65
#include "budbg.h"
66
 
67
#ifdef HAVE_MMAP
68
#include <sys/mman.h>
69
#endif
70
 
71
#include <sys/stat.h>
72
 
73
/* Internal headers for the ELF .stab-dump code - sorry.  */
74
#define BYTES_IN_WORD   32
75
#include "aout/aout64.h"
76
 
77
/* Exit status.  */
78
static int exit_status = 0;
79
 
80
static char *default_target = NULL;     /* Default at runtime.  */
81
 
82
/* The following variables are set based on arguments passed on the
83
   command line.  */
84
static int show_version = 0;             /* Show the version number.  */
85
static int dump_section_contents;       /* -s */
86
static int dump_section_headers;        /* -h */
87
static bfd_boolean dump_file_header;    /* -f */
88
static int dump_symtab;                 /* -t */
89
static int dump_dynamic_symtab;         /* -T */
90
static int dump_reloc_info;             /* -r */
91
static int dump_dynamic_reloc_info;     /* -R */
92
static int dump_ar_hdrs;                /* -a */
93
static int dump_private_headers;        /* -p */
94
static int prefix_addresses;            /* --prefix-addresses */
95
static int with_line_numbers;           /* -l */
96
static bfd_boolean with_source_code;    /* -S */
97
static int show_raw_insn;               /* --show-raw-insn */
98
static int dump_dwarf_section_info;     /* --dwarf */
99
static int dump_stab_section_info;      /* --stabs */
100
static int do_demangle;                 /* -C, --demangle */
101
static bfd_boolean disassemble;         /* -d */
102
static bfd_boolean disassemble_all;     /* -D */
103
static int disassemble_zeroes;          /* --disassemble-zeroes */
104
static bfd_boolean formats_info;        /* -i */
105
static int wide_output;                 /* -w */
106
static bfd_vma start_address = (bfd_vma) -1; /* --start-address */
107
static bfd_vma stop_address = (bfd_vma) -1;  /* --stop-address */
108
static int dump_debugging;              /* --debugging */
109
static int dump_debugging_tags;         /* --debugging-tags */
110
static int dump_special_syms = 0;        /* --special-syms */
111
static bfd_vma adjust_section_vma = 0;   /* --adjust-vma */
112
static int file_start_context = 0;      /* --file-start-context */
113
static bfd_boolean display_file_offsets;/* -F */
114
 
115
/* Pointer to an array of section names provided by
116
   one or more "-j secname" command line options.  */
117
static char **only;
118
/* The total number of slots in the only[] array.  */
119
static size_t only_size = 0;
120
/* The number of occupied slots in the only[] array.  */
121
static size_t only_used = 0;
122
 
123
/* Variables for handling include file path table.  */
124
static const char **include_paths;
125
static int include_path_count;
126
 
127
/* Extra info to pass to the section disassembler and address printing
128
   function.  */
129
struct objdump_disasm_info
130
{
131
  bfd *              abfd;
132
  asection *         sec;
133
  bfd_boolean        require_sec;
134
  arelent **         dynrelbuf;
135
  long               dynrelcount;
136
  disassembler_ftype disassemble_fn;
137
  arelent *          reloc;
138
};
139
 
140
/* Architecture to disassemble for, or default if NULL.  */
141
static char *machine = NULL;
142
 
143
/* Target specific options to the disassembler.  */
144
static char *disassembler_options = NULL;
145
 
146
/* Endianness to disassemble for, or default if BFD_ENDIAN_UNKNOWN.  */
147
static enum bfd_endian endian = BFD_ENDIAN_UNKNOWN;
148
 
149
/* The symbol table.  */
150
static asymbol **syms;
151
 
152
/* Number of symbols in `syms'.  */
153
static long symcount = 0;
154
 
155
/* The sorted symbol table.  */
156
static asymbol **sorted_syms;
157
 
158
/* Number of symbols in `sorted_syms'.  */
159
static long sorted_symcount = 0;
160
 
161
/* The dynamic symbol table.  */
162
static asymbol **dynsyms;
163
 
164
/* The synthetic symbol table.  */
165
static asymbol *synthsyms;
166
static long synthcount = 0;
167
 
168
/* Number of symbols in `dynsyms'.  */
169
static long dynsymcount = 0;
170
 
171
static bfd_byte *stabs;
172
static bfd_size_type stab_size;
173
 
174
static char *strtab;
175
static bfd_size_type stabstr_size;
176
 
177
static bfd_boolean is_relocatable = FALSE;
178
 
179
static void
180
usage (FILE *stream, int status)
181
{
182
  fprintf (stream, _("Usage: %s <option(s)> <file(s)>\n"), program_name);
183
  fprintf (stream, _(" Display information from object <file(s)>.\n"));
184
  fprintf (stream, _(" At least one of the following switches must be given:\n"));
185
  fprintf (stream, _("\
186
  -a, --archive-headers    Display archive header information\n\
187
  -f, --file-headers       Display the contents of the overall file header\n\
188
  -p, --private-headers    Display object format specific file header contents\n\
189
  -h, --[section-]headers  Display the contents of the section headers\n\
190
  -x, --all-headers        Display the contents of all headers\n\
191
  -d, --disassemble        Display assembler contents of executable sections\n\
192
  -D, --disassemble-all    Display assembler contents of all sections\n\
193
  -S, --source             Intermix source code with disassembly\n\
194
  -s, --full-contents      Display the full contents of all sections requested\n\
195
  -g, --debugging          Display debug information in object file\n\
196
  -e, --debugging-tags     Display debug information using ctags style\n\
197
  -G, --stabs              Display (in raw form) any STABS info in the file\n\
198
  -W, --dwarf              Display DWARF info in the file\n\
199
  -t, --syms               Display the contents of the symbol table(s)\n\
200
  -T, --dynamic-syms       Display the contents of the dynamic symbol table\n\
201
  -r, --reloc              Display the relocation entries in the file\n\
202
  -R, --dynamic-reloc      Display the dynamic relocation entries in the file\n\
203
  @<file>                  Read options from <file>\n\
204
  -v, --version            Display this program's version number\n\
205
  -i, --info               List object formats and architectures supported\n\
206
  -H, --help               Display this information\n\
207
"));
208
  if (status != 2)
209
    {
210
      fprintf (stream, _("\n The following switches are optional:\n"));
211
      fprintf (stream, _("\
212
  -b, --target=BFDNAME           Specify the target object format as BFDNAME\n\
213
  -m, --architecture=MACHINE     Specify the target architecture as MACHINE\n\
214
  -j, --section=NAME             Only display information for section NAME\n\
215
  -M, --disassembler-options=OPT Pass text OPT on to the disassembler\n\
216
  -EB --endian=big               Assume big endian format when disassembling\n\
217
  -EL --endian=little            Assume little endian format when disassembling\n\
218
      --file-start-context       Include context from start of file (with -S)\n\
219
  -I, --include=DIR              Add DIR to search list for source files\n\
220
  -l, --line-numbers             Include line numbers and filenames in output\n\
221
  -F, --file-offsets             Include file offsets when displaying information\n\
222
  -C, --demangle[=STYLE]         Decode mangled/processed symbol names\n\
223
                                  The STYLE, if specified, can be `auto', `gnu',\n\
224
                                  `lucid', `arm', `hp', `edg', `gnu-v3', `java'\n\
225
                                  or `gnat'\n\
226
  -w, --wide                     Format output for more than 80 columns\n\
227
  -z, --disassemble-zeroes       Do not skip blocks of zeroes when disassembling\n\
228
      --start-address=ADDR       Only process data whose address is >= ADDR\n\
229
      --stop-address=ADDR        Only process data whose address is <= ADDR\n\
230
      --prefix-addresses         Print complete address alongside disassembly\n\
231
      --[no-]show-raw-insn       Display hex alongside symbolic disassembly\n\
232
      --adjust-vma=OFFSET        Add OFFSET to all displayed section addresses\n\
233
      --special-syms             Include special symbols in symbol dumps\n\
234
\n"));
235
      list_supported_targets (program_name, stream);
236
      list_supported_architectures (program_name, stream);
237
 
238
      disassembler_usage (stream);
239
    }
240
  if (REPORT_BUGS_TO[0] && status == 0)
241
    fprintf (stream, _("Report bugs to %s.\n"), REPORT_BUGS_TO);
242
  exit (status);
243
}
244
 
245
/* 150 isn't special; it's just an arbitrary non-ASCII char value.  */
246
enum option_values
247
  {
248
    OPTION_ENDIAN=150,
249
    OPTION_START_ADDRESS,
250
    OPTION_STOP_ADDRESS,
251
    OPTION_ADJUST_VMA
252
  };
253
 
254
static struct option long_options[]=
255
{
256
  {"adjust-vma", required_argument, NULL, OPTION_ADJUST_VMA},
257
  {"all-headers", no_argument, NULL, 'x'},
258
  {"private-headers", no_argument, NULL, 'p'},
259
  {"architecture", required_argument, NULL, 'm'},
260
  {"archive-headers", no_argument, NULL, 'a'},
261
  {"debugging", no_argument, NULL, 'g'},
262
  {"debugging-tags", no_argument, NULL, 'e'},
263
  {"demangle", optional_argument, NULL, 'C'},
264
  {"disassemble", no_argument, NULL, 'd'},
265
  {"disassemble-all", no_argument, NULL, 'D'},
266
  {"disassembler-options", required_argument, NULL, 'M'},
267
  {"disassemble-zeroes", no_argument, NULL, 'z'},
268
  {"dynamic-reloc", no_argument, NULL, 'R'},
269
  {"dynamic-syms", no_argument, NULL, 'T'},
270
  {"endian", required_argument, NULL, OPTION_ENDIAN},
271
  {"file-headers", no_argument, NULL, 'f'},
272
  {"file-offsets", no_argument, NULL, 'F'},
273
  {"file-start-context", no_argument, &file_start_context, 1},
274
  {"full-contents", no_argument, NULL, 's'},
275
  {"headers", no_argument, NULL, 'h'},
276
  {"help", no_argument, NULL, 'H'},
277
  {"info", no_argument, NULL, 'i'},
278
  {"line-numbers", no_argument, NULL, 'l'},
279
  {"no-show-raw-insn", no_argument, &show_raw_insn, -1},
280
  {"prefix-addresses", no_argument, &prefix_addresses, 1},
281
  {"reloc", no_argument, NULL, 'r'},
282
  {"section", required_argument, NULL, 'j'},
283
  {"section-headers", no_argument, NULL, 'h'},
284
  {"show-raw-insn", no_argument, &show_raw_insn, 1},
285
  {"source", no_argument, NULL, 'S'},
286
  {"special-syms", no_argument, &dump_special_syms, 1},
287
  {"include", required_argument, NULL, 'I'},
288
  {"dwarf", no_argument, NULL, 'W'},
289
  {"stabs", no_argument, NULL, 'G'},
290
  {"start-address", required_argument, NULL, OPTION_START_ADDRESS},
291
  {"stop-address", required_argument, NULL, OPTION_STOP_ADDRESS},
292
  {"syms", no_argument, NULL, 't'},
293
  {"target", required_argument, NULL, 'b'},
294
  {"version", no_argument, NULL, 'V'},
295
  {"wide", no_argument, NULL, 'w'},
296
  {0, no_argument, 0, 0}
297
};
298
 
299
static void
300
nonfatal (const char *msg)
301
{
302
  bfd_nonfatal (msg);
303
  exit_status = 1;
304
}
305
 
306
static void
307
dump_section_header (bfd *abfd, asection *section,
308
                     void *ignored ATTRIBUTE_UNUSED)
309
{
310
  char *comma = "";
311
  unsigned int opb = bfd_octets_per_byte (abfd);
312
 
313
  /* Ignore linker created section.  See elfNN_ia64_object_p in
314
     bfd/elfxx-ia64.c.  */
315
  if (section->flags & SEC_LINKER_CREATED)
316
    return;
317
 
318
  printf ("%3d %-13s %08lx  ", section->index,
319
          bfd_get_section_name (abfd, section),
320
          (unsigned long) bfd_section_size (abfd, section) / opb);
321
  bfd_printf_vma (abfd, bfd_get_section_vma (abfd, section));
322
  printf ("  ");
323
  bfd_printf_vma (abfd, section->lma);
324
  printf ("  %08lx  2**%u", (unsigned long) section->filepos,
325
          bfd_get_section_alignment (abfd, section));
326
  if (! wide_output)
327
    printf ("\n                ");
328
  printf ("  ");
329
 
330
#define PF(x, y) \
331
  if (section->flags & x) { printf ("%s%s", comma, y); comma = ", "; }
332
 
333
  PF (SEC_HAS_CONTENTS, "CONTENTS");
334
  PF (SEC_ALLOC, "ALLOC");
335
  PF (SEC_CONSTRUCTOR, "CONSTRUCTOR");
336
  PF (SEC_LOAD, "LOAD");
337
  PF (SEC_RELOC, "RELOC");
338
  PF (SEC_READONLY, "READONLY");
339
  PF (SEC_CODE, "CODE");
340
  PF (SEC_DATA, "DATA");
341
  PF (SEC_ROM, "ROM");
342
  PF (SEC_DEBUGGING, "DEBUGGING");
343
  PF (SEC_NEVER_LOAD, "NEVER_LOAD");
344
  PF (SEC_EXCLUDE, "EXCLUDE");
345
  PF (SEC_SORT_ENTRIES, "SORT_ENTRIES");
346
  if (bfd_get_arch (abfd) == bfd_arch_tic54x)
347
    {
348
      PF (SEC_TIC54X_BLOCK, "BLOCK");
349
      PF (SEC_TIC54X_CLINK, "CLINK");
350
    }
351
  PF (SEC_SMALL_DATA, "SMALL_DATA");
352
  if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
353
    PF (SEC_COFF_SHARED, "SHARED");
354
  PF (SEC_THREAD_LOCAL, "THREAD_LOCAL");
355
  PF (SEC_GROUP, "GROUP");
356
 
357
  if ((section->flags & SEC_LINK_ONCE) != 0)
358
    {
359
      const char *ls;
360
      struct coff_comdat_info *comdat;
361
 
362
      switch (section->flags & SEC_LINK_DUPLICATES)
363
        {
364
        default:
365
          abort ();
366
        case SEC_LINK_DUPLICATES_DISCARD:
367
          ls = "LINK_ONCE_DISCARD";
368
          break;
369
        case SEC_LINK_DUPLICATES_ONE_ONLY:
370
          ls = "LINK_ONCE_ONE_ONLY";
371
          break;
372
        case SEC_LINK_DUPLICATES_SAME_SIZE:
373
          ls = "LINK_ONCE_SAME_SIZE";
374
          break;
375
        case SEC_LINK_DUPLICATES_SAME_CONTENTS:
376
          ls = "LINK_ONCE_SAME_CONTENTS";
377
          break;
378
        }
379
      printf ("%s%s", comma, ls);
380
 
381
      comdat = bfd_coff_get_comdat_section (abfd, section);
382
      if (comdat != NULL)
383
        printf (" (COMDAT %s %ld)", comdat->name, comdat->symbol);
384
 
385
      comma = ", ";
386
    }
387
 
388
  printf ("\n");
389
#undef PF
390
}
391
 
392
static void
393
dump_headers (bfd *abfd)
394
{
395
  printf (_("Sections:\n"));
396
 
397
#ifndef BFD64
398
  printf (_("Idx Name          Size      VMA       LMA       File off  Algn"));
399
#else
400
  /* With BFD64, non-ELF returns -1 and wants always 64 bit addresses.  */
401
  if (bfd_get_arch_size (abfd) == 32)
402
    printf (_("Idx Name          Size      VMA       LMA       File off  Algn"));
403
  else
404
    printf (_("Idx Name          Size      VMA               LMA               File off  Algn"));
405
#endif
406
 
407
  if (wide_output)
408
    printf (_("  Flags"));
409
  if (abfd->flags & HAS_LOAD_PAGE)
410
    printf (_("  Pg"));
411
  printf ("\n");
412
 
413
  bfd_map_over_sections (abfd, dump_section_header, NULL);
414
}
415
 
416
static asymbol **
417
slurp_symtab (bfd *abfd)
418
{
419
  asymbol **sy = NULL;
420
  long storage;
421
 
422
  if (!(bfd_get_file_flags (abfd) & HAS_SYMS))
423
    {
424
      symcount = 0;
425
      return NULL;
426
    }
427
 
428
  storage = bfd_get_symtab_upper_bound (abfd);
429
  if (storage < 0)
430
    bfd_fatal (bfd_get_filename (abfd));
431
  if (storage)
432
    sy = xmalloc (storage);
433
 
434
  symcount = bfd_canonicalize_symtab (abfd, sy);
435
  if (symcount < 0)
436
    bfd_fatal (bfd_get_filename (abfd));
437
  return sy;
438
}
439
 
440
/* Read in the dynamic symbols.  */
441
 
442
static asymbol **
443
slurp_dynamic_symtab (bfd *abfd)
444
{
445
  asymbol **sy = NULL;
446
  long storage;
447
 
448
  storage = bfd_get_dynamic_symtab_upper_bound (abfd);
449
  if (storage < 0)
450
    {
451
      if (!(bfd_get_file_flags (abfd) & DYNAMIC))
452
        {
453
          non_fatal (_("%s: not a dynamic object"), bfd_get_filename (abfd));
454
          dynsymcount = 0;
455
          return NULL;
456
        }
457
 
458
      bfd_fatal (bfd_get_filename (abfd));
459
    }
460
  if (storage)
461
    sy = xmalloc (storage);
462
 
463
  dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, sy);
464
  if (dynsymcount < 0)
465
    bfd_fatal (bfd_get_filename (abfd));
466
  return sy;
467
}
468
 
469
/* Filter out (in place) symbols that are useless for disassembly.
470
   COUNT is the number of elements in SYMBOLS.
471
   Return the number of useful symbols.  */
472
 
473
static long
474
remove_useless_symbols (asymbol **symbols, long count)
475
{
476
  asymbol **in_ptr = symbols, **out_ptr = symbols;
477
 
478
  while (--count >= 0)
479
    {
480
      asymbol *sym = *in_ptr++;
481
 
482
      if (sym->name == NULL || sym->name[0] == '\0')
483
        continue;
484
      if (sym->flags & (BSF_DEBUGGING | BSF_SECTION_SYM))
485
        continue;
486
      if (bfd_is_und_section (sym->section)
487
          || bfd_is_com_section (sym->section))
488
        continue;
489
 
490
      *out_ptr++ = sym;
491
    }
492
  return out_ptr - symbols;
493
}
494
 
495
/* Sort symbols into value order.  */
496
 
497
static int
498
compare_symbols (const void *ap, const void *bp)
499
{
500
  const asymbol *a = * (const asymbol **) ap;
501
  const asymbol *b = * (const asymbol **) bp;
502
  const char *an;
503
  const char *bn;
504
  size_t anl;
505
  size_t bnl;
506
  bfd_boolean af;
507
  bfd_boolean bf;
508
  flagword aflags;
509
  flagword bflags;
510
 
511
  if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
512
    return 1;
513
  else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
514
    return -1;
515
 
516
  if (a->section > b->section)
517
    return 1;
518
  else if (a->section < b->section)
519
    return -1;
520
 
521
  an = bfd_asymbol_name (a);
522
  bn = bfd_asymbol_name (b);
523
  anl = strlen (an);
524
  bnl = strlen (bn);
525
 
526
  /* The symbols gnu_compiled and gcc2_compiled convey no real
527
     information, so put them after other symbols with the same value.  */
528
  af = (strstr (an, "gnu_compiled") != NULL
529
        || strstr (an, "gcc2_compiled") != NULL);
530
  bf = (strstr (bn, "gnu_compiled") != NULL
531
        || strstr (bn, "gcc2_compiled") != NULL);
532
 
533
  if (af && ! bf)
534
    return 1;
535
  if (! af && bf)
536
    return -1;
537
 
538
  /* We use a heuristic for the file name, to try to sort it after
539
     more useful symbols.  It may not work on non Unix systems, but it
540
     doesn't really matter; the only difference is precisely which
541
     symbol names get printed.  */
542
 
543
#define file_symbol(s, sn, snl)                 \
544
  (((s)->flags & BSF_FILE) != 0                  \
545
   || ((sn)[(snl) - 2] == '.'                   \
546
       && ((sn)[(snl) - 1] == 'o'               \
547
           || (sn)[(snl) - 1] == 'a')))
548
 
549
  af = file_symbol (a, an, anl);
550
  bf = file_symbol (b, bn, bnl);
551
 
552
  if (af && ! bf)
553
    return 1;
554
  if (! af && bf)
555
    return -1;
556
 
557
  /* Try to sort global symbols before local symbols before function
558
     symbols before debugging symbols.  */
559
 
560
  aflags = a->flags;
561
  bflags = b->flags;
562
 
563
  if ((aflags & BSF_DEBUGGING) != (bflags & BSF_DEBUGGING))
564
    {
565
      if ((aflags & BSF_DEBUGGING) != 0)
566
        return 1;
567
      else
568
        return -1;
569
    }
570
  if ((aflags & BSF_FUNCTION) != (bflags & BSF_FUNCTION))
571
    {
572
      if ((aflags & BSF_FUNCTION) != 0)
573
        return -1;
574
      else
575
        return 1;
576
    }
577
  if ((aflags & BSF_LOCAL) != (bflags & BSF_LOCAL))
578
    {
579
      if ((aflags & BSF_LOCAL) != 0)
580
        return 1;
581
      else
582
        return -1;
583
    }
584
  if ((aflags & BSF_GLOBAL) != (bflags & BSF_GLOBAL))
585
    {
586
      if ((aflags & BSF_GLOBAL) != 0)
587
        return -1;
588
      else
589
        return 1;
590
    }
591
 
592
  /* Symbols that start with '.' might be section names, so sort them
593
     after symbols that don't start with '.'.  */
594
  if (an[0] == '.' && bn[0] != '.')
595
    return 1;
596
  if (an[0] != '.' && bn[0] == '.')
597
    return -1;
598
 
599
  /* Finally, if we can't distinguish them in any other way, try to
600
     get consistent results by sorting the symbols by name.  */
601
  return strcmp (an, bn);
602
}
603
 
604
/* Sort relocs into address order.  */
605
 
606
static int
607
compare_relocs (const void *ap, const void *bp)
608
{
609
  const arelent *a = * (const arelent **) ap;
610
  const arelent *b = * (const arelent **) bp;
611
 
612
  if (a->address > b->address)
613
    return 1;
614
  else if (a->address < b->address)
615
    return -1;
616
 
617
  /* So that associated relocations tied to the same address show up
618
     in the correct order, we don't do any further sorting.  */
619
  if (a > b)
620
    return 1;
621
  else if (a < b)
622
    return -1;
623
  else
624
    return 0;
625
}
626
 
627
/* Print an address (VMA) to the output stream in INFO.
628
   If SKIP_ZEROES is TRUE, omit leading zeroes.  */
629
 
630
static void
631
objdump_print_value (bfd_vma vma, struct disassemble_info *info,
632
                     bfd_boolean skip_zeroes)
633
{
634
  char buf[30];
635
  char *p;
636
  struct objdump_disasm_info *aux;
637
 
638
  aux = (struct objdump_disasm_info *) info->application_data;
639
  bfd_sprintf_vma (aux->abfd, buf, vma);
640
  if (! skip_zeroes)
641
    p = buf;
642
  else
643
    {
644
      for (p = buf; *p == '0'; ++p)
645
        ;
646
      if (*p == '\0')
647
        --p;
648
    }
649
  (*info->fprintf_func) (info->stream, "%s", p);
650
}
651
 
652
/* Print the name of a symbol.  */
653
 
654
static void
655
objdump_print_symname (bfd *abfd, struct disassemble_info *info,
656
                       asymbol *sym)
657
{
658
  char *alloc;
659
  const char *name;
660
 
661
  alloc = NULL;
662
  name = bfd_asymbol_name (sym);
663
  if (do_demangle && name[0] != '\0')
664
    {
665
      /* Demangle the name.  */
666
      alloc = bfd_demangle (abfd, name, DMGL_ANSI | DMGL_PARAMS);
667
      if (alloc != NULL)
668
        name = alloc;
669
    }
670
 
671
  if (info != NULL)
672
    (*info->fprintf_func) (info->stream, "%s", name);
673
  else
674
    printf ("%s", name);
675
 
676
  if (alloc != NULL)
677
    free (alloc);
678
}
679
 
680
/* Locate a symbol given a bfd and a section (from INFO->application_data),
681
   and a VMA.  If INFO->application_data->require_sec is TRUE, then always
682
   require the symbol to be in the section.  Returns NULL if there is no
683
   suitable symbol.  If PLACE is not NULL, then *PLACE is set to the index
684
   of the symbol in sorted_syms.  */
685
 
686
static asymbol *
687
find_symbol_for_address (bfd_vma vma,
688
                         struct disassemble_info *info,
689
                         long *place)
690
{
691
  /* @@ Would it speed things up to cache the last two symbols returned,
692
     and maybe their address ranges?  For many processors, only one memory
693
     operand can be present at a time, so the 2-entry cache wouldn't be
694
     constantly churned by code doing heavy memory accesses.  */
695
 
696
  /* Indices in `sorted_syms'.  */
697
  long min = 0;
698
  long max = sorted_symcount;
699
  long thisplace;
700
  struct objdump_disasm_info *aux;
701
  bfd *abfd;
702
  asection *sec;
703
  unsigned int opb;
704
  bfd_boolean want_section;
705
 
706
  if (sorted_symcount < 1)
707
    return NULL;
708
 
709
  aux = (struct objdump_disasm_info *) info->application_data;
710
  abfd = aux->abfd;
711
  sec = aux->sec;
712
  opb = bfd_octets_per_byte (abfd);
713
 
714
  /* Perform a binary search looking for the closest symbol to the
715
     required value.  We are searching the range (min, max].  */
716
  while (min + 1 < max)
717
    {
718
      asymbol *sym;
719
 
720
      thisplace = (max + min) / 2;
721
      sym = sorted_syms[thisplace];
722
 
723
      if (bfd_asymbol_value (sym) > vma)
724
        max = thisplace;
725
      else if (bfd_asymbol_value (sym) < vma)
726
        min = thisplace;
727
      else
728
        {
729
          min = thisplace;
730
          break;
731
        }
732
    }
733
 
734
  /* The symbol we want is now in min, the low end of the range we
735
     were searching.  If there are several symbols with the same
736
     value, we want the first one.  */
737
  thisplace = min;
738
  while (thisplace > 0
739
         && (bfd_asymbol_value (sorted_syms[thisplace])
740
             == bfd_asymbol_value (sorted_syms[thisplace - 1])))
741
    --thisplace;
742
 
743
  /* If the file is relocatable, and the symbol could be from this
744
     section, prefer a symbol from this section over symbols from
745
     others, even if the other symbol's value might be closer.
746
 
747
     Note that this may be wrong for some symbol references if the
748
     sections have overlapping memory ranges, but in that case there's
749
     no way to tell what's desired without looking at the relocation
750
     table.
751
 
752
     Also give the target a chance to reject symbols.  */
753
  want_section = (aux->require_sec
754
                  || ((abfd->flags & HAS_RELOC) != 0
755
                      && vma >= bfd_get_section_vma (abfd, sec)
756
                      && vma < (bfd_get_section_vma (abfd, sec)
757
                                + bfd_section_size (abfd, sec) / opb)));
758
  if ((sorted_syms[thisplace]->section != sec && want_section)
759
      || !info->symbol_is_valid (sorted_syms[thisplace], info))
760
    {
761
      long i;
762
      long newplace;
763
 
764
      for (i = thisplace + 1; i < sorted_symcount; i++)
765
        {
766
          if (bfd_asymbol_value (sorted_syms[i])
767
              != bfd_asymbol_value (sorted_syms[thisplace]))
768
            break;
769
        }
770
 
771
      --i;
772
      newplace = sorted_symcount;
773
 
774
      for (; i >= 0; i--)
775
        {
776
          if ((sorted_syms[i]->section == sec || !want_section)
777
              && info->symbol_is_valid (sorted_syms[i], info))
778
            {
779
              if (newplace == sorted_symcount)
780
                newplace = i;
781
 
782
              if (bfd_asymbol_value (sorted_syms[i])
783
                  != bfd_asymbol_value (sorted_syms[newplace]))
784
                break;
785
 
786
              /* Remember this symbol and keep searching until we reach
787
                 an earlier address.  */
788
              newplace = i;
789
            }
790
        }
791
 
792
      if (newplace != sorted_symcount)
793
        thisplace = newplace;
794
      else
795
        {
796
          /* We didn't find a good symbol with a smaller value.
797
             Look for one with a larger value.  */
798
          for (i = thisplace + 1; i < sorted_symcount; i++)
799
            {
800
              if ((sorted_syms[i]->section == sec || !want_section)
801
                  && info->symbol_is_valid (sorted_syms[i], info))
802
                {
803
                  thisplace = i;
804
                  break;
805
                }
806
            }
807
        }
808
 
809
      if ((sorted_syms[thisplace]->section != sec && want_section)
810
          || !info->symbol_is_valid (sorted_syms[thisplace], info))
811
        /* There is no suitable symbol.  */
812
        return NULL;
813
    }
814
 
815
  if (place != NULL)
816
    *place = thisplace;
817
 
818
  return sorted_syms[thisplace];
819
}
820
 
821
/* Print an address and the offset to the nearest symbol.  */
822
 
823
static void
824
objdump_print_addr_with_sym (bfd *abfd, asection *sec, asymbol *sym,
825
                             bfd_vma vma, struct disassemble_info *info,
826
                             bfd_boolean skip_zeroes)
827
{
828
  objdump_print_value (vma, info, skip_zeroes);
829
 
830
  if (sym == NULL)
831
    {
832
      bfd_vma secaddr;
833
 
834
      (*info->fprintf_func) (info->stream, " <%s",
835
                             bfd_get_section_name (abfd, sec));
836
      secaddr = bfd_get_section_vma (abfd, sec);
837
      if (vma < secaddr)
838
        {
839
          (*info->fprintf_func) (info->stream, "-0x");
840
          objdump_print_value (secaddr - vma, info, TRUE);
841
        }
842
      else if (vma > secaddr)
843
        {
844
          (*info->fprintf_func) (info->stream, "+0x");
845
          objdump_print_value (vma - secaddr, info, TRUE);
846
        }
847
      (*info->fprintf_func) (info->stream, ">");
848
    }
849
  else
850
    {
851
      (*info->fprintf_func) (info->stream, " <");
852
      objdump_print_symname (abfd, info, sym);
853
      if (bfd_asymbol_value (sym) > vma)
854
        {
855
          (*info->fprintf_func) (info->stream, "-0x");
856
          objdump_print_value (bfd_asymbol_value (sym) - vma, info, TRUE);
857
        }
858
      else if (vma > bfd_asymbol_value (sym))
859
        {
860
          (*info->fprintf_func) (info->stream, "+0x");
861
          objdump_print_value (vma - bfd_asymbol_value (sym), info, TRUE);
862
        }
863
      (*info->fprintf_func) (info->stream, ">");
864
    }
865
 
866
  if (display_file_offsets)
867
    info->fprintf_func (info->stream, _(" (File Offset: 0x%lx)"),
868
                        (long int)(sec->filepos + (vma - sec->vma)));
869
}
870
 
871
/* Print an address (VMA), symbolically if possible.
872
   If SKIP_ZEROES is TRUE, don't output leading zeroes.  */
873
 
874
static void
875
objdump_print_addr (bfd_vma vma,
876
                    struct disassemble_info *info,
877
                    bfd_boolean skip_zeroes)
878
{
879
  struct objdump_disasm_info *aux;
880
  asymbol *sym = NULL;
881
  bfd_boolean skip_find = FALSE;
882
 
883
  aux = (struct objdump_disasm_info *) info->application_data;
884
 
885
  if (sorted_symcount < 1)
886
    {
887
      (*info->fprintf_func) (info->stream, "0x");
888
      objdump_print_value (vma, info, skip_zeroes);
889
 
890
      if (display_file_offsets)
891
        info->fprintf_func (info->stream, _(" (File Offset: 0x%lx)"),
892
                            (long int)(aux->sec->filepos + (vma - aux->sec->vma)));
893
      return;
894
    }
895
 
896
  if (aux->reloc != NULL
897
      && aux->reloc->sym_ptr_ptr != NULL
898
      && * aux->reloc->sym_ptr_ptr != NULL)
899
    {
900
      sym = * aux->reloc->sym_ptr_ptr;
901
 
902
      /* Adjust the vma to the reloc.  */
903
      vma += bfd_asymbol_value (sym);
904
 
905
      if (bfd_is_und_section (bfd_get_section (sym)))
906
        skip_find = TRUE;
907
    }
908
 
909
  if (!skip_find)
910
    sym = find_symbol_for_address (vma, info, NULL);
911
 
912
  objdump_print_addr_with_sym (aux->abfd, aux->sec, sym, vma, info,
913
                               skip_zeroes);
914
}
915
 
916
/* Print VMA to INFO.  This function is passed to the disassembler
917
   routine.  */
918
 
919
static void
920
objdump_print_address (bfd_vma vma, struct disassemble_info *info)
921
{
922
  objdump_print_addr (vma, info, ! prefix_addresses);
923
}
924
 
925
/* Determine if the given address has a symbol associated with it.  */
926
 
927
static int
928
objdump_symbol_at_address (bfd_vma vma, struct disassemble_info * info)
929
{
930
  asymbol * sym;
931
 
932
  sym = find_symbol_for_address (vma, info, NULL);
933
 
934
  return (sym != NULL && (bfd_asymbol_value (sym) == vma));
935
}
936
 
937
/* Hold the last function name and the last line number we displayed
938
   in a disassembly.  */
939
 
940
static char *prev_functionname;
941
static unsigned int prev_line;
942
 
943
/* We keep a list of all files that we have seen when doing a
944
   disassembly with source, so that we know how much of the file to
945
   display.  This can be important for inlined functions.  */
946
 
947
struct print_file_list
948
{
949
  struct print_file_list *next;
950
  const char *filename;
951
  const char *modname;
952
  const char *map;
953
  size_t mapsize;
954
  const char **linemap;
955
  unsigned maxline;
956
  unsigned last_line;
957
  int first;
958
};
959
 
960
static struct print_file_list *print_files;
961
 
962
/* The number of preceding context lines to show when we start
963
   displaying a file for the first time.  */
964
 
965
#define SHOW_PRECEDING_CONTEXT_LINES (5)
966
 
967
/* Read a complete file into memory.  */
968
 
969
static const char *
970
slurp_file (const char *fn, size_t *size)
971
{
972
#ifdef HAVE_MMAP
973
  int ps = getpagesize ();
974
  size_t msize;
975
#endif
976
  const char *map;
977
  struct stat st;
978
  int fd = open (fn, O_RDONLY | O_BINARY);
979
 
980
  if (fd < 0)
981
    return NULL;
982
  if (fstat (fd, &st) < 0)
983
    return NULL;
984
  *size = st.st_size;
985
#ifdef HAVE_MMAP
986
  msize = (*size + ps - 1) & ~(ps - 1);
987
  map = mmap (NULL, msize, PROT_READ, MAP_SHARED, fd, 0);
988
  if (map != (char *)-1L)
989
    {
990
      close(fd);
991
      return map;
992
    }
993
#endif
994
  map = malloc (*size);
995
  if (!map || (size_t) read (fd, (char *)map, *size) != *size)
996
    {
997
      free ((void *)map);
998
      map = NULL;
999
    }
1000
  close (fd);
1001
  return map;
1002
}
1003
 
1004
#define line_map_decrease 5
1005
 
1006
/* Precompute array of lines for a mapped file. */
1007
 
1008
static const char **
1009
index_file (const char *map, size_t size, unsigned int *maxline)
1010
{
1011
  const char *p, *lstart, *end;
1012
  int chars_per_line = 45; /* First iteration will use 40.  */
1013
  unsigned int lineno;
1014
  const char **linemap = NULL;
1015
  unsigned long line_map_size = 0;
1016
 
1017
  lineno = 0;
1018
  lstart = map;
1019
  end = map + size;
1020
 
1021
  for (p = map; p < end; p++)
1022
    {
1023
      if (*p == '\n')
1024
        {
1025
          if (p + 1 < end && p[1] == '\r')
1026
            p++;
1027
        }
1028
      else if (*p == '\r')
1029
        {
1030
          if (p + 1 < end && p[1] == '\n')
1031
            p++;
1032
        }
1033
      else
1034
        continue;
1035
 
1036
      /* End of line found.  */
1037
 
1038
      if (linemap == NULL || line_map_size < lineno + 1)
1039
        {
1040
          unsigned long newsize;
1041
 
1042
          chars_per_line -= line_map_decrease;
1043
          if (chars_per_line <= 1)
1044
            chars_per_line = 1;
1045
          line_map_size = size / chars_per_line + 1;
1046
          if (line_map_size < lineno + 1)
1047
            line_map_size = lineno + 1;
1048
          newsize = line_map_size * sizeof (char *);
1049
          linemap = xrealloc (linemap, newsize);
1050
        }
1051
 
1052
      linemap[lineno++] = lstart;
1053
      lstart = p + 1;
1054
    }
1055
 
1056
  *maxline = lineno;
1057
  return linemap;
1058
}
1059
 
1060
/* Tries to open MODNAME, and if successful adds a node to print_files
1061
   linked list and returns that node.  Returns NULL on failure.  */
1062
 
1063
static struct print_file_list *
1064
try_print_file_open (const char *origname, const char *modname)
1065
{
1066
  struct print_file_list *p;
1067
 
1068
  p = xmalloc (sizeof (struct print_file_list));
1069
 
1070
  p->map = slurp_file (modname, &p->mapsize);
1071
  if (p->map == NULL)
1072
    {
1073
      free (p);
1074
      return NULL;
1075
    }
1076
 
1077
  p->linemap = index_file (p->map, p->mapsize, &p->maxline);
1078
  p->last_line = 0;
1079
  p->filename = origname;
1080
  p->modname = modname;
1081
  p->next = print_files;
1082
  p->first = 1;
1083
  print_files = p;
1084
  return p;
1085
}
1086
 
1087
/* If the the source file, as described in the symtab, is not found
1088
   try to locate it in one of the paths specified with -I
1089
   If found, add location to print_files linked list.  */
1090
 
1091
static struct print_file_list *
1092
update_source_path (const char *filename)
1093
{
1094
  struct print_file_list *p;
1095
  const char *fname;
1096
  int i;
1097
 
1098
  if (filename == NULL)
1099
    return NULL;
1100
 
1101
  p = try_print_file_open (filename, filename);
1102
  if (p != NULL)
1103
    return p;
1104
 
1105
  if (include_path_count == 0)
1106
    return NULL;
1107
 
1108
  /* Get the name of the file.  */
1109
  fname = strrchr (filename, '/');
1110
#ifdef HAVE_DOS_BASED_FILE_SYSTEM
1111
  {
1112
    /* We could have a mixed forward/back slash case.  */
1113
    char *backslash = strrchr (filename, '\\');
1114
    if (fname == NULL || (backslash != NULL && backslash > fname))
1115
      fname = backslash;
1116
    if (fname == NULL && filename[0] != '\0' && filename[1] == ':')
1117
      fname = filename + 1;
1118
  }
1119
#endif
1120
  if (fname == NULL)
1121
    fname = filename;
1122
  else
1123
    ++fname;
1124
 
1125
  /* If file exists under a new path, we need to add it to the list
1126
     so that show_line knows about it.  */
1127
  for (i = 0; i < include_path_count; i++)
1128
    {
1129
      char *modname = concat (include_paths[i], "/", fname, (const char *) 0);
1130
 
1131
      p = try_print_file_open (filename, modname);
1132
      if (p)
1133
        return p;
1134
 
1135
      free (modname);
1136
    }
1137
 
1138
  return NULL;
1139
}
1140
 
1141
/* Print a source file line.  */
1142
 
1143
static void
1144
print_line (struct print_file_list *p, unsigned int line)
1145
{
1146
  const char *l;
1147
  size_t len;
1148
 
1149
  --line;
1150
  if (line >= p->maxline)
1151
    return;
1152
  l = p->linemap [line];
1153
  /* Test fwrite return value to quiet glibc warning.  */
1154
  len = strcspn (l, "\n\r");
1155
  if (len == 0 || fwrite (l, len, 1, stdout) == 1)
1156
    putchar ('\n');
1157
}
1158
 
1159
/* Print a range of source code lines. */
1160
 
1161
static void
1162
dump_lines (struct print_file_list *p, unsigned int start, unsigned int end)
1163
{
1164
  if (p->map == NULL)
1165
    return;
1166
  while (start <= end)
1167
    {
1168
      print_line (p, start);
1169
      start++;
1170
    }
1171
}
1172
 
1173
/* Show the line number, or the source line, in a disassembly
1174
   listing.  */
1175
 
1176
static void
1177
show_line (bfd *abfd, asection *section, bfd_vma addr_offset)
1178
{
1179
  const char *filename;
1180
  const char *functionname;
1181
  unsigned int line;
1182
 
1183
  if (! with_line_numbers && ! with_source_code)
1184
    return;
1185
 
1186
  if (! bfd_find_nearest_line (abfd, section, syms, addr_offset, &filename,
1187
                               &functionname, &line))
1188
    return;
1189
 
1190
  if (filename != NULL && *filename == '\0')
1191
    filename = NULL;
1192
  if (functionname != NULL && *functionname == '\0')
1193
    functionname = NULL;
1194
 
1195
  if (with_line_numbers)
1196
    {
1197
      if (functionname != NULL
1198
          && (prev_functionname == NULL
1199
              || strcmp (functionname, prev_functionname) != 0))
1200
        printf ("%s():\n", functionname);
1201
      if (line > 0 && line != prev_line)
1202
        printf ("%s:%u\n", filename == NULL ? "???" : filename, line);
1203
    }
1204
 
1205
  if (with_source_code
1206
      && filename != NULL
1207
      && line > 0)
1208
    {
1209
      struct print_file_list **pp, *p;
1210
      unsigned l;
1211
 
1212
      for (pp = &print_files; *pp != NULL; pp = &(*pp)->next)
1213
        if (strcmp ((*pp)->filename, filename) == 0)
1214
          break;
1215
      p = *pp;
1216
 
1217
      if (p == NULL)
1218
          p = update_source_path (filename);
1219
 
1220
      if (p != NULL && line != p->last_line)
1221
        {
1222
          if (file_start_context && p->first)
1223
            l = 1;
1224
          else
1225
            {
1226
              l = line - SHOW_PRECEDING_CONTEXT_LINES;
1227
              if (l >= line)
1228
                l = 1;
1229
              if (p->last_line >= l && p->last_line <= line)
1230
                l = p->last_line + 1;
1231
            }
1232
          dump_lines (p, l, line);
1233
          p->last_line = line;
1234
          p->first = 0;
1235
        }
1236
    }
1237
 
1238
  if (functionname != NULL
1239
      && (prev_functionname == NULL
1240
          || strcmp (functionname, prev_functionname) != 0))
1241
    {
1242
      if (prev_functionname != NULL)
1243
        free (prev_functionname);
1244
      prev_functionname = xmalloc (strlen (functionname) + 1);
1245
      strcpy (prev_functionname, functionname);
1246
    }
1247
 
1248
  if (line > 0 && line != prev_line)
1249
    prev_line = line;
1250
}
1251
 
1252
/* Pseudo FILE object for strings.  */
1253
typedef struct
1254
{
1255
  char *buffer;
1256
  size_t pos;
1257
  size_t alloc;
1258
} SFILE;
1259
 
1260
/* sprintf to a "stream".  */
1261
 
1262
static int ATTRIBUTE_PRINTF_2
1263
objdump_sprintf (SFILE *f, const char *format, ...)
1264
{
1265
  size_t n;
1266
  va_list args;
1267
 
1268
  while (1)
1269
    {
1270
      size_t space = f->alloc - f->pos;
1271
 
1272
      va_start (args, format);
1273
      n = vsnprintf (f->buffer + f->pos, space, format, args);
1274
      va_end (args);
1275
 
1276
      if (space > n)
1277
        break;
1278
 
1279
      f->alloc = (f->alloc + n) * 2;
1280
      f->buffer = xrealloc (f->buffer, f->alloc);
1281
    }
1282
  f->pos += n;
1283
 
1284
  return n;
1285
}
1286
 
1287
/* Returns TRUE if the specified section should be dumped.  */
1288
 
1289
static bfd_boolean
1290
process_section_p (asection * section)
1291
{
1292
  size_t i;
1293
 
1294
  if (only == NULL)
1295
    return TRUE;
1296
 
1297
  for (i = 0; i < only_used; i++)
1298
    if (strcmp (only [i], section->name) == 0)
1299
      return TRUE;
1300
 
1301
  return FALSE;
1302
}
1303
 
1304
 
1305
/* The number of zeroes we want to see before we start skipping them.
1306
   The number is arbitrarily chosen.  */
1307
 
1308
#define DEFAULT_SKIP_ZEROES 8
1309
 
1310
/* The number of zeroes to skip at the end of a section.  If the
1311
   number of zeroes at the end is between SKIP_ZEROES_AT_END and
1312
   SKIP_ZEROES, they will be disassembled.  If there are fewer than
1313
   SKIP_ZEROES_AT_END, they will be skipped.  This is a heuristic
1314
   attempt to avoid disassembling zeroes inserted by section
1315
   alignment.  */
1316
 
1317
#define DEFAULT_SKIP_ZEROES_AT_END 3
1318
 
1319
/* Disassemble some data in memory between given values.  */
1320
 
1321
static void
1322
disassemble_bytes (struct disassemble_info * info,
1323
                   disassembler_ftype        disassemble_fn,
1324
                   bfd_boolean               insns,
1325
                   bfd_byte *                data,
1326
                   bfd_vma                   start_offset,
1327
                   bfd_vma                   stop_offset,
1328
                   bfd_vma                   rel_offset,
1329
                   arelent ***               relppp,
1330
                   arelent **                relppend)
1331
{
1332
  struct objdump_disasm_info *aux;
1333
  asection *section;
1334
  int octets_per_line;
1335
  bfd_boolean done_dot;
1336
  int skip_addr_chars;
1337
  bfd_vma addr_offset;
1338
  unsigned int opb = info->octets_per_byte;
1339
  unsigned int skip_zeroes = info->skip_zeroes;
1340
  unsigned int skip_zeroes_at_end = info->skip_zeroes_at_end;
1341
  int octets = opb;
1342
  SFILE sfile;
1343
 
1344
  aux = (struct objdump_disasm_info *) info->application_data;
1345
  section = aux->sec;
1346
 
1347
  sfile.alloc = 120;
1348
  sfile.buffer = xmalloc (sfile.alloc);
1349
  sfile.pos = 0;
1350
 
1351
  if (insns)
1352
    octets_per_line = 4;
1353
  else
1354
    octets_per_line = 16;
1355
 
1356
  /* Figure out how many characters to skip at the start of an
1357
     address, to make the disassembly look nicer.  We discard leading
1358
     zeroes in chunks of 4, ensuring that there is always a leading
1359
     zero remaining.  */
1360
  skip_addr_chars = 0;
1361
  if (! prefix_addresses)
1362
    {
1363
      char buf[30];
1364
      char *s;
1365
 
1366
      bfd_sprintf_vma
1367
        (aux->abfd, buf,
1368
         (section->vma
1369
          + bfd_section_size (section->owner, section) / opb));
1370
      s = buf;
1371
      while (s[0] == '0' && s[1] == '0' && s[2] == '0' && s[3] == '0'
1372
             && s[4] == '0')
1373
        {
1374
          skip_addr_chars += 4;
1375
          s += 4;
1376
        }
1377
    }
1378
 
1379
  info->insn_info_valid = 0;
1380
 
1381
  done_dot = FALSE;
1382
  addr_offset = start_offset;
1383
  while (addr_offset < stop_offset)
1384
    {
1385
      bfd_vma z;
1386
      bfd_boolean need_nl = FALSE;
1387
      int previous_octets;
1388
 
1389
      /* Remember the length of the previous instruction.  */
1390
      previous_octets = octets;
1391
      octets = 0;
1392
 
1393
      /* If we see more than SKIP_ZEROES octets of zeroes, we just
1394
         print `...'.  */
1395
      for (z = addr_offset * opb; z < stop_offset * opb; z++)
1396
        if (data[z] != 0)
1397
          break;
1398
      if (! disassemble_zeroes
1399
          && (info->insn_info_valid == 0
1400
              || info->branch_delay_insns == 0)
1401
          && (z - addr_offset * opb >= skip_zeroes
1402
              || (z == stop_offset * opb &&
1403
                  z - addr_offset * opb < skip_zeroes_at_end)))
1404
        {
1405
          /* If there are more nonzero octets to follow, we only skip
1406
             zeroes in multiples of 4, to try to avoid running over
1407
             the start of an instruction which happens to start with
1408
             zero.  */
1409
          if (z != stop_offset * opb)
1410
            z = addr_offset * opb + ((z - addr_offset * opb) &~ 3);
1411
 
1412
          octets = z - addr_offset * opb;
1413
 
1414
          /* If we are going to display more data, and we are displaying
1415
             file offsets, then tell the user how many zeroes we skip
1416
             and the file offset from where we resume dumping.  */
1417
          if (display_file_offsets && ((addr_offset + (octets / opb)) < stop_offset))
1418
            printf ("\t... (skipping %d zeroes, resuming at file offset: 0x%lx)\n",
1419
                    octets / opb,
1420
                    (long int)(section->filepos + (addr_offset + (octets / opb))));
1421
          else
1422
            printf ("\t...\n");
1423
        }
1424
      else
1425
        {
1426
          char buf[50];
1427
          int bpc = 0;
1428
          int pb = 0;
1429
 
1430
          done_dot = FALSE;
1431
 
1432
          if (with_line_numbers || with_source_code)
1433
            show_line (aux->abfd, section, addr_offset);
1434
 
1435
          if (! prefix_addresses)
1436
            {
1437
              char *s;
1438
 
1439
              bfd_sprintf_vma (aux->abfd, buf, section->vma + addr_offset);
1440
              for (s = buf + skip_addr_chars; *s == '0'; s++)
1441
                *s = ' ';
1442
              if (*s == '\0')
1443
                *--s = '0';
1444
              printf ("%s:\t", buf + skip_addr_chars);
1445
            }
1446
          else
1447
            {
1448
              aux->require_sec = TRUE;
1449
              objdump_print_address (section->vma + addr_offset, info);
1450
              aux->require_sec = FALSE;
1451
              putchar (' ');
1452
            }
1453
 
1454
          if (insns)
1455
            {
1456
              sfile.pos = 0;
1457
              info->fprintf_func = (fprintf_ftype) objdump_sprintf;
1458
              info->stream = &sfile;
1459
              info->bytes_per_line = 0;
1460
              info->bytes_per_chunk = 0;
1461
              info->flags = 0;
1462
 
1463
              if (info->disassembler_needs_relocs
1464
                  && (bfd_get_file_flags (aux->abfd) & EXEC_P) == 0
1465
                  && (bfd_get_file_flags (aux->abfd) & DYNAMIC) == 0
1466
                  && *relppp < relppend)
1467
                {
1468
                  bfd_signed_vma distance_to_rel;
1469
 
1470
                  distance_to_rel = (**relppp)->address
1471
                    - (rel_offset + addr_offset);
1472
 
1473
                  /* Check to see if the current reloc is associated with
1474
                     the instruction that we are about to disassemble.  */
1475
                  if (distance_to_rel == 0
1476
                      /* FIXME: This is wrong.  We are trying to catch
1477
                         relocs that are addressed part way through the
1478
                         current instruction, as might happen with a packed
1479
                         VLIW instruction.  Unfortunately we do not know the
1480
                         length of the current instruction since we have not
1481
                         disassembled it yet.  Instead we take a guess based
1482
                         upon the length of the previous instruction.  The
1483
                         proper solution is to have a new target-specific
1484
                         disassembler function which just returns the length
1485
                         of an instruction at a given address without trying
1486
                         to display its disassembly. */
1487
                      || (distance_to_rel > 0
1488
                          && distance_to_rel < (bfd_signed_vma) (previous_octets/ opb)))
1489
                    {
1490
                      info->flags = INSN_HAS_RELOC;
1491
                      aux->reloc = **relppp;
1492
                    }
1493
                  else
1494
                    aux->reloc = NULL;
1495
                }
1496
 
1497
              octets = (*disassemble_fn) (section->vma + addr_offset, info);
1498
              info->fprintf_func = (fprintf_ftype) fprintf;
1499
              info->stream = stdout;
1500
              if (info->bytes_per_line != 0)
1501
                octets_per_line = info->bytes_per_line;
1502
              if (octets < 0)
1503
                {
1504
                  if (sfile.pos)
1505
                    printf ("%s\n", sfile.buffer);
1506
                  break;
1507
                }
1508
            }
1509
          else
1510
            {
1511
              bfd_vma j;
1512
 
1513
              octets = octets_per_line;
1514
              if (addr_offset + octets / opb > stop_offset)
1515
                octets = (stop_offset - addr_offset) * opb;
1516
 
1517
              for (j = addr_offset * opb; j < addr_offset * opb + octets; ++j)
1518
                {
1519
                  if (ISPRINT (data[j]))
1520
                    buf[j - addr_offset * opb] = data[j];
1521
                  else
1522
                    buf[j - addr_offset * opb] = '.';
1523
                }
1524
              buf[j - addr_offset * opb] = '\0';
1525
            }
1526
 
1527
          if (prefix_addresses
1528
              ? show_raw_insn > 0
1529
              : show_raw_insn >= 0)
1530
            {
1531
              bfd_vma j;
1532
 
1533
              /* If ! prefix_addresses and ! wide_output, we print
1534
                 octets_per_line octets per line.  */
1535
              pb = octets;
1536
              if (pb > octets_per_line && ! prefix_addresses && ! wide_output)
1537
                pb = octets_per_line;
1538
 
1539
              if (info->bytes_per_chunk)
1540
                bpc = info->bytes_per_chunk;
1541
              else
1542
                bpc = 1;
1543
 
1544
              for (j = addr_offset * opb; j < addr_offset * opb + pb; j += bpc)
1545
                {
1546
                  int k;
1547
 
1548
                  if (bpc > 1 && info->display_endian == BFD_ENDIAN_LITTLE)
1549
                    {
1550
                      for (k = bpc - 1; k >= 0; k--)
1551
                        printf ("%02x", (unsigned) data[j + k]);
1552
                      putchar (' ');
1553
                    }
1554
                  else
1555
                    {
1556
                      for (k = 0; k < bpc; k++)
1557
                        printf ("%02x", (unsigned) data[j + k]);
1558
                      putchar (' ');
1559
                    }
1560
                }
1561
 
1562
              for (; pb < octets_per_line; pb += bpc)
1563
                {
1564
                  int k;
1565
 
1566
                  for (k = 0; k < bpc; k++)
1567
                    printf ("  ");
1568
                  putchar (' ');
1569
                }
1570
 
1571
              /* Separate raw data from instruction by extra space.  */
1572
              if (insns)
1573
                putchar ('\t');
1574
              else
1575
                printf ("    ");
1576
            }
1577
 
1578
          if (! insns)
1579
            printf ("%s", buf);
1580
          else if (sfile.pos)
1581
            printf ("%s", sfile.buffer);
1582
 
1583
          if (prefix_addresses
1584
              ? show_raw_insn > 0
1585
              : show_raw_insn >= 0)
1586
            {
1587
              while (pb < octets)
1588
                {
1589
                  bfd_vma j;
1590
                  char *s;
1591
 
1592
                  putchar ('\n');
1593
                  j = addr_offset * opb + pb;
1594
 
1595
                  bfd_sprintf_vma (aux->abfd, buf, section->vma + j / opb);
1596
                  for (s = buf + skip_addr_chars; *s == '0'; s++)
1597
                    *s = ' ';
1598
                  if (*s == '\0')
1599
                    *--s = '0';
1600
                  printf ("%s:\t", buf + skip_addr_chars);
1601
 
1602
                  pb += octets_per_line;
1603
                  if (pb > octets)
1604
                    pb = octets;
1605
                  for (; j < addr_offset * opb + pb; j += bpc)
1606
                    {
1607
                      int k;
1608
 
1609
                      if (bpc > 1 && info->display_endian == BFD_ENDIAN_LITTLE)
1610
                        {
1611
                          for (k = bpc - 1; k >= 0; k--)
1612
                            printf ("%02x", (unsigned) data[j + k]);
1613
                          putchar (' ');
1614
                        }
1615
                      else
1616
                        {
1617
                          for (k = 0; k < bpc; k++)
1618
                            printf ("%02x", (unsigned) data[j + k]);
1619
                          putchar (' ');
1620
                        }
1621
                    }
1622
                }
1623
            }
1624
 
1625
          if (!wide_output)
1626
            putchar ('\n');
1627
          else
1628
            need_nl = TRUE;
1629
        }
1630
 
1631
      while ((*relppp) < relppend
1632
             && (**relppp)->address < rel_offset + addr_offset + octets / opb)
1633
        {
1634
          if (dump_reloc_info || dump_dynamic_reloc_info)
1635
            {
1636
              arelent *q;
1637
 
1638
              q = **relppp;
1639
 
1640
              if (wide_output)
1641
                putchar ('\t');
1642
              else
1643
                printf ("\t\t\t");
1644
 
1645
              objdump_print_value (section->vma - rel_offset + q->address,
1646
                                   info, TRUE);
1647
 
1648
              if (q->howto == NULL)
1649
                printf (": *unknown*\t");
1650
              else if (q->howto->name)
1651
                printf (": %s\t", q->howto->name);
1652
              else
1653
                printf (": %d\t", q->howto->type);
1654
 
1655
              if (q->sym_ptr_ptr == NULL || *q->sym_ptr_ptr == NULL)
1656
                printf ("*unknown*");
1657
              else
1658
                {
1659
                  const char *sym_name;
1660
 
1661
                  sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
1662
                  if (sym_name != NULL && *sym_name != '\0')
1663
                    objdump_print_symname (aux->abfd, info, *q->sym_ptr_ptr);
1664
                  else
1665
                    {
1666
                      asection *sym_sec;
1667
 
1668
                      sym_sec = bfd_get_section (*q->sym_ptr_ptr);
1669
                      sym_name = bfd_get_section_name (aux->abfd, sym_sec);
1670
                      if (sym_name == NULL || *sym_name == '\0')
1671
                        sym_name = "*unknown*";
1672
                      printf ("%s", sym_name);
1673
                    }
1674
                }
1675
 
1676
              if (q->addend)
1677
                {
1678
                  printf ("+0x");
1679
                  objdump_print_value (q->addend, info, TRUE);
1680
                }
1681
 
1682
              printf ("\n");
1683
              need_nl = FALSE;
1684
            }
1685
          ++(*relppp);
1686
        }
1687
 
1688
      if (need_nl)
1689
        printf ("\n");
1690
 
1691
      addr_offset += octets / opb;
1692
    }
1693
 
1694
  free (sfile.buffer);
1695
}
1696
 
1697
static void
1698
disassemble_section (bfd *abfd, asection *section, void *info)
1699
{
1700
  struct disassemble_info *    pinfo = (struct disassemble_info *) info;
1701
  struct objdump_disasm_info * paux;
1702
  unsigned int                 opb = pinfo->octets_per_byte;
1703
  bfd_byte *                   data = NULL;
1704
  bfd_size_type                datasize = 0;
1705
  arelent **                   rel_pp = NULL;
1706
  arelent **                   rel_ppstart = NULL;
1707
  arelent **                   rel_ppend;
1708
  unsigned long                stop_offset;
1709
  asymbol *                    sym = NULL;
1710
  long                         place = 0;
1711
  long                         rel_count;
1712
  bfd_vma                      rel_offset;
1713
  unsigned long                addr_offset;
1714
 
1715
  /* Sections that do not contain machine
1716
     code are not normally disassembled.  */
1717
  if (! disassemble_all
1718
      && only == NULL
1719
      && ((section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
1720
          != (SEC_CODE | SEC_HAS_CONTENTS)))
1721
    return;
1722
 
1723
  if (! process_section_p (section))
1724
    return;
1725
 
1726
  datasize = bfd_get_section_size (section);
1727
  if (datasize == 0)
1728
    return;
1729
 
1730
  /* Decide which set of relocs to use.  Load them if necessary.  */
1731
  paux = (struct objdump_disasm_info *) pinfo->application_data;
1732
  if (paux->dynrelbuf)
1733
    {
1734
      rel_pp = paux->dynrelbuf;
1735
      rel_count = paux->dynrelcount;
1736
      /* Dynamic reloc addresses are absolute, non-dynamic are section
1737
         relative.  REL_OFFSET specifies the reloc address corresponding
1738
         to the start of this section.  */
1739
      rel_offset = section->vma;
1740
    }
1741
  else
1742
    {
1743
      rel_count = 0;
1744
      rel_pp = NULL;
1745
      rel_offset = 0;
1746
 
1747
      if ((section->flags & SEC_RELOC) != 0
1748
          && (dump_reloc_info || pinfo->disassembler_needs_relocs))
1749
        {
1750
          long relsize;
1751
 
1752
          relsize = bfd_get_reloc_upper_bound (abfd, section);
1753
          if (relsize < 0)
1754
            bfd_fatal (bfd_get_filename (abfd));
1755
 
1756
          if (relsize > 0)
1757
            {
1758
              rel_ppstart = rel_pp = xmalloc (relsize);
1759
              rel_count = bfd_canonicalize_reloc (abfd, section, rel_pp, syms);
1760
              if (rel_count < 0)
1761
                bfd_fatal (bfd_get_filename (abfd));
1762
 
1763
              /* Sort the relocs by address.  */
1764
              qsort (rel_pp, rel_count, sizeof (arelent *), compare_relocs);
1765
            }
1766
        }
1767
 
1768
    }
1769
  rel_ppend = rel_pp + rel_count;
1770
 
1771
  data = xmalloc (datasize);
1772
 
1773
  bfd_get_section_contents (abfd, section, data, 0, datasize);
1774
 
1775
  paux->sec = section;
1776
  pinfo->buffer = data;
1777
  pinfo->buffer_vma = section->vma;
1778
  pinfo->buffer_length = datasize;
1779
  pinfo->section = section;
1780
 
1781
  if (start_address == (bfd_vma) -1
1782
      || start_address < pinfo->buffer_vma)
1783
    addr_offset = 0;
1784
  else
1785
    addr_offset = start_address - pinfo->buffer_vma;
1786
 
1787
  if (stop_address == (bfd_vma) -1)
1788
    stop_offset = datasize / opb;
1789
  else
1790
    {
1791
      if (stop_address < pinfo->buffer_vma)
1792
        stop_offset = 0;
1793
      else
1794
        stop_offset = stop_address - pinfo->buffer_vma;
1795
      if (stop_offset > pinfo->buffer_length / opb)
1796
        stop_offset = pinfo->buffer_length / opb;
1797
    }
1798
 
1799
  /* Skip over the relocs belonging to addresses below the
1800
     start address.  */
1801
  while (rel_pp < rel_ppend
1802
         && (*rel_pp)->address < rel_offset + addr_offset)
1803
    ++rel_pp;
1804
 
1805
  if (addr_offset < stop_offset)
1806
    printf (_("\nDisassembly of section %s:\n"), section->name);
1807
 
1808
  /* Find the nearest symbol forwards from our current position.  */
1809
  paux->require_sec = TRUE;
1810
  sym = find_symbol_for_address (section->vma + addr_offset, info, &place);
1811
  paux->require_sec = FALSE;
1812
 
1813
  /* Disassemble a block of instructions up to the address associated with
1814
     the symbol we have just found.  Then print the symbol and find the
1815
     next symbol on.  Repeat until we have disassembled the entire section
1816
     or we have reached the end of the address range we are interested in.  */
1817
  while (addr_offset < stop_offset)
1818
    {
1819
      bfd_vma addr;
1820
      asymbol *nextsym;
1821
      unsigned long nextstop_offset;
1822
      bfd_boolean insns;
1823
 
1824
      addr = section->vma + addr_offset;
1825
 
1826
      if (sym != NULL && bfd_asymbol_value (sym) <= addr)
1827
        {
1828
          int x;
1829
 
1830
          for (x = place;
1831
               (x < sorted_symcount
1832
                && (bfd_asymbol_value (sorted_syms[x]) <= addr));
1833
               ++x)
1834
            continue;
1835
 
1836
          pinfo->symbols = sorted_syms + place;
1837
          pinfo->num_symbols = x - place;
1838
          pinfo->symtab_pos = place;
1839
        }
1840
      else
1841
        {
1842
          pinfo->symbols = NULL;
1843
          pinfo->num_symbols = 0;
1844
          pinfo->symtab_pos = -1;
1845
        }
1846
 
1847
      if (! prefix_addresses)
1848
        {
1849
          pinfo->fprintf_func (pinfo->stream, "\n");
1850
          objdump_print_addr_with_sym (abfd, section, sym, addr,
1851
                                       pinfo, FALSE);
1852
          pinfo->fprintf_func (pinfo->stream, ":\n");
1853
        }
1854
 
1855
      if (sym != NULL && bfd_asymbol_value (sym) > addr)
1856
        nextsym = sym;
1857
      else if (sym == NULL)
1858
        nextsym = NULL;
1859
      else
1860
        {
1861
#define is_valid_next_sym(SYM) \
1862
  ((SYM)->section == section \
1863
   && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
1864
   && pinfo->symbol_is_valid (SYM, pinfo))
1865
 
1866
          /* Search forward for the next appropriate symbol in
1867
             SECTION.  Note that all the symbols are sorted
1868
             together into one big array, and that some sections
1869
             may have overlapping addresses.  */
1870
          while (place < sorted_symcount
1871
                 && ! is_valid_next_sym (sorted_syms [place]))
1872
            ++place;
1873
 
1874
          if (place >= sorted_symcount)
1875
            nextsym = NULL;
1876
          else
1877
            nextsym = sorted_syms[place];
1878
        }
1879
 
1880
      if (sym != NULL && bfd_asymbol_value (sym) > addr)
1881
        nextstop_offset = bfd_asymbol_value (sym) - section->vma;
1882
      else if (nextsym == NULL)
1883
        nextstop_offset = stop_offset;
1884
      else
1885
        nextstop_offset = bfd_asymbol_value (nextsym) - section->vma;
1886
 
1887
      if (nextstop_offset > stop_offset)
1888
        nextstop_offset = stop_offset;
1889
 
1890
      /* If a symbol is explicitly marked as being an object
1891
         rather than a function, just dump the bytes without
1892
         disassembling them.  */
1893
      if (disassemble_all
1894
          || sym == NULL
1895
          || bfd_asymbol_value (sym) > addr
1896
          || ((sym->flags & BSF_OBJECT) == 0
1897
              && (strstr (bfd_asymbol_name (sym), "gnu_compiled")
1898
                  == NULL)
1899
              && (strstr (bfd_asymbol_name (sym), "gcc2_compiled")
1900
                  == NULL))
1901
          || (sym->flags & BSF_FUNCTION) != 0)
1902
        insns = TRUE;
1903
      else
1904
        insns = FALSE;
1905
 
1906
      disassemble_bytes (pinfo, paux->disassemble_fn, insns, data,
1907
                         addr_offset, nextstop_offset,
1908
                         rel_offset, &rel_pp, rel_ppend);
1909
 
1910
      addr_offset = nextstop_offset;
1911
      sym = nextsym;
1912
    }
1913
 
1914
  free (data);
1915
 
1916
  if (rel_ppstart != NULL)
1917
    free (rel_ppstart);
1918
}
1919
 
1920
/* Disassemble the contents of an object file.  */
1921
 
1922
static void
1923
disassemble_data (bfd *abfd)
1924
{
1925
  struct disassemble_info disasm_info;
1926
  struct objdump_disasm_info aux;
1927
  long i;
1928
 
1929
  print_files = NULL;
1930
  prev_functionname = NULL;
1931
  prev_line = -1;
1932
 
1933
  /* We make a copy of syms to sort.  We don't want to sort syms
1934
     because that will screw up the relocs.  */
1935
  sorted_symcount = symcount ? symcount : dynsymcount;
1936
  sorted_syms = xmalloc ((sorted_symcount + synthcount) * sizeof (asymbol *));
1937
  memcpy (sorted_syms, symcount ? syms : dynsyms,
1938
          sorted_symcount * sizeof (asymbol *));
1939
 
1940
  sorted_symcount = remove_useless_symbols (sorted_syms, sorted_symcount);
1941
 
1942
  for (i = 0; i < synthcount; ++i)
1943
    {
1944
      sorted_syms[sorted_symcount] = synthsyms + i;
1945
      ++sorted_symcount;
1946
    }
1947
 
1948
  /* Sort the symbols into section and symbol order.  */
1949
  qsort (sorted_syms, sorted_symcount, sizeof (asymbol *), compare_symbols);
1950
 
1951
  init_disassemble_info (&disasm_info, stdout, (fprintf_ftype) fprintf);
1952
 
1953
  disasm_info.application_data = (void *) &aux;
1954
  aux.abfd = abfd;
1955
  aux.require_sec = FALSE;
1956
  aux.dynrelbuf = NULL;
1957
  aux.dynrelcount = 0;
1958
  aux.reloc = NULL;
1959
 
1960
  disasm_info.print_address_func = objdump_print_address;
1961
  disasm_info.symbol_at_address_func = objdump_symbol_at_address;
1962
 
1963
  if (machine != NULL)
1964
    {
1965
      const bfd_arch_info_type *info = bfd_scan_arch (machine);
1966
 
1967
      if (info == NULL)
1968
        fatal (_("Can't use supplied machine %s"), machine);
1969
 
1970
      abfd->arch_info = info;
1971
    }
1972
 
1973
  if (endian != BFD_ENDIAN_UNKNOWN)
1974
    {
1975
      struct bfd_target *xvec;
1976
 
1977
      xvec = xmalloc (sizeof (struct bfd_target));
1978
      memcpy (xvec, abfd->xvec, sizeof (struct bfd_target));
1979
      xvec->byteorder = endian;
1980
      abfd->xvec = xvec;
1981
    }
1982
 
1983
  /* Use libopcodes to locate a suitable disassembler.  */
1984
  aux.disassemble_fn = disassembler (abfd);
1985
  if (!aux.disassemble_fn)
1986
    {
1987
      non_fatal (_("Can't disassemble for architecture %s\n"),
1988
                 bfd_printable_arch_mach (bfd_get_arch (abfd), 0));
1989
      exit_status = 1;
1990
      return;
1991
    }
1992
 
1993
  disasm_info.flavour = bfd_get_flavour (abfd);
1994
  disasm_info.arch = bfd_get_arch (abfd);
1995
  disasm_info.mach = bfd_get_mach (abfd);
1996
  disasm_info.disassembler_options = disassembler_options;
1997
  disasm_info.octets_per_byte = bfd_octets_per_byte (abfd);
1998
  disasm_info.skip_zeroes = DEFAULT_SKIP_ZEROES;
1999
  disasm_info.skip_zeroes_at_end = DEFAULT_SKIP_ZEROES_AT_END;
2000
  disasm_info.disassembler_needs_relocs = FALSE;
2001
 
2002
  if (bfd_big_endian (abfd))
2003
    disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_BIG;
2004
  else if (bfd_little_endian (abfd))
2005
    disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_LITTLE;
2006
  else
2007
    /* ??? Aborting here seems too drastic.  We could default to big or little
2008
       instead.  */
2009
    disasm_info.endian = BFD_ENDIAN_UNKNOWN;
2010
 
2011
  /* Allow the target to customize the info structure.  */
2012
  disassemble_init_for_target (& disasm_info);
2013
 
2014
  /* Pre-load the dynamic relocs if we are going
2015
     to be dumping them along with the disassembly.  */
2016
  if (dump_dynamic_reloc_info)
2017
    {
2018
      long relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2019
 
2020
      if (relsize < 0)
2021
        bfd_fatal (bfd_get_filename (abfd));
2022
 
2023
      if (relsize > 0)
2024
        {
2025
          aux.dynrelbuf = xmalloc (relsize);
2026
          aux.dynrelcount = bfd_canonicalize_dynamic_reloc (abfd,
2027
                                                            aux.dynrelbuf,
2028
                                                            dynsyms);
2029
          if (aux.dynrelcount < 0)
2030
            bfd_fatal (bfd_get_filename (abfd));
2031
 
2032
          /* Sort the relocs by address.  */
2033
          qsort (aux.dynrelbuf, aux.dynrelcount, sizeof (arelent *),
2034
                 compare_relocs);
2035
        }
2036
    }
2037
  disasm_info.symtab = sorted_syms;
2038
  disasm_info.symtab_size = sorted_symcount;
2039
 
2040
  bfd_map_over_sections (abfd, disassemble_section, & disasm_info);
2041
 
2042
  if (aux.dynrelbuf != NULL)
2043
    free (aux.dynrelbuf);
2044
  free (sorted_syms);
2045
}
2046
 
2047
int
2048
load_debug_section (enum dwarf_section_display_enum debug, void *file)
2049
{
2050
  struct dwarf_section *section = &debug_displays [debug].section;
2051
  bfd *abfd = file;
2052
  asection *sec;
2053
  bfd_boolean ret;
2054
 
2055
  /* If it is already loaded, do nothing.  */
2056
  if (section->start != NULL)
2057
    return 1;
2058
 
2059
  /* Locate the debug section.  */
2060
  sec = bfd_get_section_by_name (abfd, section->name);
2061
  if (sec == NULL)
2062
    return 0;
2063
 
2064
  /* Compute a bias to be added to offsets found within the DWARF debug
2065
     information.  These offsets are meant to be relative to the start of
2066
     the dwarf section, and hence the bias should be 0.  For MACH-O however
2067
     a dwarf section is really just a region of a much larger section and so
2068
     the bias is the address of the start of that area within the larger
2069
     section.  This test is important for PE and COFF based targets which
2070
     use DWARF debug information, since unlike ELF, they do not allow the
2071
     dwarf sections to be placed at address 0.  */
2072
  if (bfd_get_flavour (abfd) == bfd_target_mach_o_flavour)
2073
    section->address = bfd_get_section_vma (abfd, sec);
2074
  else
2075
    section->address = 0;
2076
 
2077
  section->size = bfd_get_section_size (sec);
2078
  section->start = xmalloc (section->size);
2079
 
2080
  if (is_relocatable && debug_displays [debug].relocate)
2081
    ret = bfd_simple_get_relocated_section_contents (abfd,
2082
                                                     sec,
2083
                                                     section->start,
2084
                                                     syms) != NULL;
2085
  else
2086
    ret = bfd_get_section_contents (abfd, sec, section->start, 0,
2087
                                    section->size);
2088
 
2089
  if (!ret)
2090
    {
2091
      free_debug_section (debug);
2092
      printf (_("\nCan't get contents for section '%s'.\n"),
2093
              section->name);
2094
    }
2095
 
2096
  return ret;
2097
}
2098
 
2099
void
2100
free_debug_section (enum dwarf_section_display_enum debug)
2101
{
2102
  struct dwarf_section *section = &debug_displays [debug].section;
2103
 
2104
  if (section->start == NULL)
2105
    return;
2106
 
2107
  free ((char *) section->start);
2108
  section->start = NULL;
2109
  section->address = 0;
2110
  section->size = 0;
2111
}
2112
 
2113
static void
2114
dump_dwarf_section (bfd *abfd, asection *section,
2115
                    void *arg ATTRIBUTE_UNUSED)
2116
{
2117
  const char *name = bfd_get_section_name (abfd, section);
2118
  const char *match;
2119
  enum dwarf_section_display_enum i;
2120
 
2121
  if (CONST_STRNEQ (name, ".gnu.linkonce.wi."))
2122
    match = ".debug_info";
2123
  else
2124
    match = name;
2125
 
2126
  for (i = 0; i < max; i++)
2127
    if (strcmp (debug_displays[i].section.name, match) == 0)
2128
      {
2129
        if (!debug_displays[i].eh_frame)
2130
          {
2131
            struct dwarf_section *sec = &debug_displays [i].section;
2132
 
2133
            if (load_debug_section (i, abfd))
2134
              {
2135
                debug_displays[i].display (sec, abfd);
2136
 
2137
                if (i != info && i != abbrev)
2138
                  free_debug_section (i);
2139
              }
2140
          }
2141
        break;
2142
      }
2143
}
2144
 
2145
static const char *mach_o_dwarf_sections [] = {
2146
  "LC_SEGMENT.__DWARFA.__debug_abbrev",         /* .debug_abbrev */
2147
  "LC_SEGMENT.__DWARFA.__debug_aranges",        /* .debug_aranges */
2148
  "LC_SEGMENT.__DWARFA.__debug_frame",          /* .debug_frame */
2149
  "LC_SEGMENT.__DWARFA.__debug_info",           /* .debug_info */
2150
  "LC_SEGMENT.__DWARFA.__debug_line",           /* .debug_line */
2151
  "LC_SEGMENT.__DWARFA.__debug_pubnames",       /* .debug_pubnames */
2152
  ".eh_frame",                                  /* .eh_frame */
2153
  "LC_SEGMENT.__DWARFA.__debug_macinfo",        /* .debug_macinfo */
2154
  "LC_SEGMENT.__DWARFA.__debug_str",            /* .debug_str */
2155
  "LC_SEGMENT.__DWARFA.__debug_loc",            /* .debug_loc */
2156
  "LC_SEGMENT.__DWARFA.__debug_pubtypes",       /* .debug_pubtypes */
2157
  "LC_SEGMENT.__DWARFA.__debug_ranges",         /* .debug_ranges */
2158
  "LC_SEGMENT.__DWARFA.__debug_static_func",    /* .debug_static_func */
2159
  "LC_SEGMENT.__DWARFA.__debug_static_vars",    /* .debug_static_vars */
2160
  "LC_SEGMENT.__DWARFA.__debug_types",          /* .debug_types */
2161
  "LC_SEGMENT.__DWARFA.__debug_weaknames"       /* .debug_weaknames */
2162
};
2163
 
2164
static const char *generic_dwarf_sections [max];
2165
 
2166
static void
2167
check_mach_o_dwarf (bfd *abfd)
2168
{
2169
  static enum bfd_flavour old_flavour = bfd_target_unknown_flavour;
2170
  enum bfd_flavour current_flavour = bfd_get_flavour (abfd);
2171
  enum dwarf_section_display_enum i;
2172
 
2173
  if (generic_dwarf_sections [0] == NULL)
2174
    for (i = 0; i < max; i++)
2175
      generic_dwarf_sections [i] = debug_displays[i].section.name;
2176
 
2177
  if (old_flavour != current_flavour)
2178
    {
2179
      if (current_flavour == bfd_target_mach_o_flavour)
2180
        for (i = 0; i < max; i++)
2181
          debug_displays[i].section.name = mach_o_dwarf_sections [i];
2182
      else if (old_flavour == bfd_target_mach_o_flavour)
2183
        for (i = 0; i < max; i++)
2184
          debug_displays[i].section.name = generic_dwarf_sections [i];
2185
 
2186
      old_flavour = current_flavour;
2187
    }
2188
}
2189
 
2190
/* Dump the dwarf debugging information.  */
2191
 
2192
static void
2193
dump_dwarf (bfd *abfd)
2194
{
2195
  is_relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2196
 
2197
  /* FIXME: bfd_get_arch_size may return -1.  We assume that 64bit
2198
     targets will return 64.  */
2199
  eh_addr_size = bfd_get_arch_size (abfd) == 64 ? 8 : 4;
2200
 
2201
  if (bfd_big_endian (abfd))
2202
    byte_get = byte_get_big_endian;
2203
  else if (bfd_little_endian (abfd))
2204
    byte_get = byte_get_little_endian;
2205
  else
2206
    abort ();
2207
 
2208
  check_mach_o_dwarf (abfd);
2209
 
2210
  if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
2211
    {
2212
      const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2213
      init_dwarf_regnames (bed->elf_machine_code);
2214
    }
2215
 
2216
  bfd_map_over_sections (abfd, dump_dwarf_section, NULL);
2217
 
2218
  free_debug_memory ();
2219
}
2220
 
2221
/* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
2222
   it.  Return NULL on failure.   */
2223
 
2224
static char *
2225
read_section_stabs (bfd *abfd, const char *sect_name, bfd_size_type *size_ptr)
2226
{
2227
  asection *stabsect;
2228
  bfd_size_type size;
2229
  char *contents;
2230
 
2231
  stabsect = bfd_get_section_by_name (abfd, sect_name);
2232
  if (stabsect == NULL)
2233
    {
2234
      printf (_("No %s section present\n\n"), sect_name);
2235
      return FALSE;
2236
    }
2237
 
2238
  size = bfd_section_size (abfd, stabsect);
2239
  contents  = xmalloc (size);
2240
 
2241
  if (! bfd_get_section_contents (abfd, stabsect, contents, 0, size))
2242
    {
2243
      non_fatal (_("Reading %s section of %s failed: %s"),
2244
                 sect_name, bfd_get_filename (abfd),
2245
                 bfd_errmsg (bfd_get_error ()));
2246
      free (contents);
2247
      exit_status = 1;
2248
      return NULL;
2249
    }
2250
 
2251
  *size_ptr = size;
2252
 
2253
  return contents;
2254
}
2255
 
2256
/* Stabs entries use a 12 byte format:
2257
     4 byte string table index
2258
     1 byte stab type
2259
     1 byte stab other field
2260
     2 byte stab desc field
2261
     4 byte stab value
2262
   FIXME: This will have to change for a 64 bit object format.  */
2263
 
2264
#define STRDXOFF  (0)
2265
#define TYPEOFF   (4)
2266
#define OTHEROFF  (5)
2267
#define DESCOFF   (6)
2268
#define VALOFF    (8)
2269
#define STABSIZE (12)
2270
 
2271
/* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
2272
   using string table section STRSECT_NAME (in `strtab').  */
2273
 
2274
static void
2275
print_section_stabs (bfd *abfd,
2276
                     const char *stabsect_name,
2277
                     unsigned *string_offset_ptr)
2278
{
2279
  int i;
2280
  unsigned file_string_table_offset = 0;
2281
  unsigned next_file_string_table_offset = *string_offset_ptr;
2282
  bfd_byte *stabp, *stabs_end;
2283
 
2284
  stabp = stabs;
2285
  stabs_end = stabp + stab_size;
2286
 
2287
  printf (_("Contents of %s section:\n\n"), stabsect_name);
2288
  printf ("Symnum n_type n_othr n_desc n_value  n_strx String\n");
2289
 
2290
  /* Loop through all symbols and print them.
2291
 
2292
     We start the index at -1 because there is a dummy symbol on
2293
     the front of stabs-in-{coff,elf} sections that supplies sizes.  */
2294
  for (i = -1; stabp < stabs_end; stabp += STABSIZE, i++)
2295
    {
2296
      const char *name;
2297
      unsigned long strx;
2298
      unsigned char type, other;
2299
      unsigned short desc;
2300
      bfd_vma value;
2301
 
2302
      strx = bfd_h_get_32 (abfd, stabp + STRDXOFF);
2303
      type = bfd_h_get_8 (abfd, stabp + TYPEOFF);
2304
      other = bfd_h_get_8 (abfd, stabp + OTHEROFF);
2305
      desc = bfd_h_get_16 (abfd, stabp + DESCOFF);
2306
      value = bfd_h_get_32 (abfd, stabp + VALOFF);
2307
 
2308
      printf ("\n%-6d ", i);
2309
      /* Either print the stab name, or, if unnamed, print its number
2310
         again (makes consistent formatting for tools like awk).  */
2311
      name = bfd_get_stab_name (type);
2312
      if (name != NULL)
2313
        printf ("%-6s", name);
2314
      else if (type == N_UNDF)
2315
        printf ("HdrSym");
2316
      else
2317
        printf ("%-6d", type);
2318
      printf (" %-6d %-6d ", other, desc);
2319
      bfd_printf_vma (abfd, value);
2320
      printf (" %-6lu", strx);
2321
 
2322
      /* Symbols with type == 0 (N_UNDF) specify the length of the
2323
         string table associated with this file.  We use that info
2324
         to know how to relocate the *next* file's string table indices.  */
2325
      if (type == N_UNDF)
2326
        {
2327
          file_string_table_offset = next_file_string_table_offset;
2328
          next_file_string_table_offset += value;
2329
        }
2330
      else
2331
        {
2332
          /* Using the (possibly updated) string table offset, print the
2333
             string (if any) associated with this symbol.  */
2334
          if ((strx + file_string_table_offset) < stabstr_size)
2335
            printf (" %s", &strtab[strx + file_string_table_offset]);
2336
          else
2337
            printf (" *");
2338
        }
2339
    }
2340
  printf ("\n\n");
2341
  *string_offset_ptr = next_file_string_table_offset;
2342
}
2343
 
2344
typedef struct
2345
{
2346
  const char * section_name;
2347
  const char * string_section_name;
2348
  unsigned string_offset;
2349
}
2350
stab_section_names;
2351
 
2352
static void
2353
find_stabs_section (bfd *abfd, asection *section, void *names)
2354
{
2355
  int len;
2356
  stab_section_names * sought = (stab_section_names *) names;
2357
 
2358
  /* Check for section names for which stabsect_name is a prefix, to
2359
     handle .stab.N, etc.  */
2360
  len = strlen (sought->section_name);
2361
 
2362
  /* If the prefix matches, and the files section name ends with a
2363
     nul or a digit, then we match.  I.e., we want either an exact
2364
     match or a section followed by a number.  */
2365
  if (strncmp (sought->section_name, section->name, len) == 0
2366
      && (section->name[len] == 0
2367
          || (section->name[len] == '.' && ISDIGIT (section->name[len + 1]))))
2368
    {
2369
      if (strtab == NULL)
2370
        strtab = read_section_stabs (abfd, sought->string_section_name,
2371
                                     &stabstr_size);
2372
 
2373
      if (strtab)
2374
        {
2375
          stabs = (bfd_byte *) read_section_stabs (abfd, section->name,
2376
                                                   &stab_size);
2377
          if (stabs)
2378
            print_section_stabs (abfd, section->name, &sought->string_offset);
2379
        }
2380
    }
2381
}
2382
 
2383
static void
2384
dump_stabs_section (bfd *abfd, char *stabsect_name, char *strsect_name)
2385
{
2386
  stab_section_names s;
2387
 
2388
  s.section_name = stabsect_name;
2389
  s.string_section_name = strsect_name;
2390
  s.string_offset = 0;
2391
 
2392
  bfd_map_over_sections (abfd, find_stabs_section, & s);
2393
 
2394
  free (strtab);
2395
  strtab = NULL;
2396
}
2397
 
2398
/* Dump the any sections containing stabs debugging information.  */
2399
 
2400
static void
2401
dump_stabs (bfd *abfd)
2402
{
2403
  dump_stabs_section (abfd, ".stab", ".stabstr");
2404
  dump_stabs_section (abfd, ".stab.excl", ".stab.exclstr");
2405
  dump_stabs_section (abfd, ".stab.index", ".stab.indexstr");
2406
  dump_stabs_section (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
2407
}
2408
 
2409
static void
2410
dump_bfd_header (bfd *abfd)
2411
{
2412
  char *comma = "";
2413
 
2414
  printf (_("architecture: %s, "),
2415
          bfd_printable_arch_mach (bfd_get_arch (abfd),
2416
                                   bfd_get_mach (abfd)));
2417
  printf (_("flags 0x%08x:\n"), abfd->flags);
2418
 
2419
#define PF(x, y)    if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
2420
  PF (HAS_RELOC, "HAS_RELOC");
2421
  PF (EXEC_P, "EXEC_P");
2422
  PF (HAS_LINENO, "HAS_LINENO");
2423
  PF (HAS_DEBUG, "HAS_DEBUG");
2424
  PF (HAS_SYMS, "HAS_SYMS");
2425
  PF (HAS_LOCALS, "HAS_LOCALS");
2426
  PF (DYNAMIC, "DYNAMIC");
2427
  PF (WP_TEXT, "WP_TEXT");
2428
  PF (D_PAGED, "D_PAGED");
2429
  PF (BFD_IS_RELAXABLE, "BFD_IS_RELAXABLE");
2430
  PF (HAS_LOAD_PAGE, "HAS_LOAD_PAGE");
2431
  printf (_("\nstart address 0x"));
2432
  bfd_printf_vma (abfd, abfd->start_address);
2433
  printf ("\n");
2434
}
2435
 
2436
 
2437
static void
2438
dump_bfd_private_header (bfd *abfd)
2439
{
2440
  bfd_print_private_bfd_data (abfd, stdout);
2441
}
2442
 
2443
 
2444
/* Display a section in hexadecimal format with associated characters.
2445
   Each line prefixed by the zero padded address.  */
2446
 
2447
static void
2448
dump_section (bfd *abfd, asection *section, void *dummy ATTRIBUTE_UNUSED)
2449
{
2450
  bfd_byte *data = 0;
2451
  bfd_size_type datasize;
2452
  bfd_size_type addr_offset;
2453
  bfd_size_type start_offset;
2454
  bfd_size_type stop_offset;
2455
  unsigned int opb = bfd_octets_per_byte (abfd);
2456
  /* Bytes per line.  */
2457
  const int onaline = 16;
2458
  char buf[64];
2459
  int count;
2460
  int width;
2461
 
2462
  if ((section->flags & SEC_HAS_CONTENTS) == 0)
2463
    return;
2464
 
2465
  if (! process_section_p (section))
2466
    return;
2467
 
2468
  if ((datasize = bfd_section_size (abfd, section)) == 0)
2469
    return;
2470
 
2471
  /* Compute the address range to display.  */
2472
  if (start_address == (bfd_vma) -1
2473
      || start_address < section->vma)
2474
    start_offset = 0;
2475
  else
2476
    start_offset = start_address - section->vma;
2477
 
2478
  if (stop_address == (bfd_vma) -1)
2479
    stop_offset = datasize / opb;
2480
  else
2481
    {
2482
      if (stop_address < section->vma)
2483
        stop_offset = 0;
2484
      else
2485
        stop_offset = stop_address - section->vma;
2486
 
2487
      if (stop_offset > datasize / opb)
2488
        stop_offset = datasize / opb;
2489
    }
2490
 
2491
  if (start_offset >= stop_offset)
2492
    return;
2493
 
2494
  printf (_("Contents of section %s:"), section->name);
2495
  if (display_file_offsets)
2496
    printf (_("  (Starting at file offset: 0x%lx)"), (long int)(section->filepos + start_offset));
2497
  printf ("\n");
2498
 
2499
  data = xmalloc (datasize);
2500
 
2501
  bfd_get_section_contents (abfd, section, data, 0, datasize);
2502
 
2503
  width = 4;
2504
 
2505
  bfd_sprintf_vma (abfd, buf, start_offset + section->vma);
2506
  if (strlen (buf) >= sizeof (buf))
2507
    abort ();
2508
 
2509
  count = 0;
2510
  while (buf[count] == '0' && buf[count+1] != '\0')
2511
    count++;
2512
  count = strlen (buf) - count;
2513
  if (count > width)
2514
    width = count;
2515
 
2516
  bfd_sprintf_vma (abfd, buf, stop_offset + section->vma - 1);
2517
  if (strlen (buf) >= sizeof (buf))
2518
    abort ();
2519
 
2520
  count = 0;
2521
  while (buf[count] == '0' && buf[count+1] != '\0')
2522
    count++;
2523
  count = strlen (buf) - count;
2524
  if (count > width)
2525
    width = count;
2526
 
2527
  for (addr_offset = start_offset;
2528
       addr_offset < stop_offset; addr_offset += onaline / opb)
2529
    {
2530
      bfd_size_type j;
2531
 
2532
      bfd_sprintf_vma (abfd, buf, (addr_offset + section->vma));
2533
      count = strlen (buf);
2534
      if ((size_t) count >= sizeof (buf))
2535
        abort ();
2536
 
2537
      putchar (' ');
2538
      while (count < width)
2539
        {
2540
          putchar ('0');
2541
          count++;
2542
        }
2543
      fputs (buf + count - width, stdout);
2544
      putchar (' ');
2545
 
2546
      for (j = addr_offset * opb;
2547
           j < addr_offset * opb + onaline; j++)
2548
        {
2549
          if (j < stop_offset * opb)
2550
            printf ("%02x", (unsigned) (data[j]));
2551
          else
2552
            printf ("  ");
2553
          if ((j & 3) == 3)
2554
            printf (" ");
2555
        }
2556
 
2557
      printf (" ");
2558
      for (j = addr_offset * opb;
2559
           j < addr_offset * opb + onaline; j++)
2560
        {
2561
          if (j >= stop_offset * opb)
2562
            printf (" ");
2563
          else
2564
            printf ("%c", ISPRINT (data[j]) ? data[j] : '.');
2565
        }
2566
      putchar ('\n');
2567
    }
2568
  free (data);
2569
}
2570
 
2571
/* Actually display the various requested regions.  */
2572
 
2573
static void
2574
dump_data (bfd *abfd)
2575
{
2576
  bfd_map_over_sections (abfd, dump_section, NULL);
2577
}
2578
 
2579
/* Should perhaps share code and display with nm?  */
2580
 
2581
static void
2582
dump_symbols (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean dynamic)
2583
{
2584
  asymbol **current;
2585
  long max;
2586
  long count;
2587
 
2588
  if (dynamic)
2589
    {
2590
      current = dynsyms;
2591
      max = dynsymcount;
2592
      printf ("DYNAMIC SYMBOL TABLE:\n");
2593
    }
2594
  else
2595
    {
2596
      current = syms;
2597
      max = symcount;
2598
      printf ("SYMBOL TABLE:\n");
2599
    }
2600
 
2601
  if (max == 0)
2602
    printf (_("no symbols\n"));
2603
 
2604
  for (count = 0; count < max; count++)
2605
    {
2606
      bfd *cur_bfd;
2607
 
2608
      if (*current == NULL)
2609
        printf (_("no information for symbol number %ld\n"), count);
2610
 
2611
      else if ((cur_bfd = bfd_asymbol_bfd (*current)) == NULL)
2612
        printf (_("could not determine the type of symbol number %ld\n"),
2613
                count);
2614
 
2615
      else if (process_section_p ((* current)->section)
2616
               && (dump_special_syms
2617
                   || !bfd_is_target_special_symbol (cur_bfd, *current)))
2618
        {
2619
          const char *name = (*current)->name;
2620
 
2621
          if (do_demangle && name != NULL && *name != '\0')
2622
            {
2623
              char *alloc;
2624
 
2625
              /* If we want to demangle the name, we demangle it
2626
                 here, and temporarily clobber it while calling
2627
                 bfd_print_symbol.  FIXME: This is a gross hack.  */
2628
              alloc = bfd_demangle (cur_bfd, name, DMGL_ANSI | DMGL_PARAMS);
2629
              if (alloc != NULL)
2630
                (*current)->name = alloc;
2631
              bfd_print_symbol (cur_bfd, stdout, *current,
2632
                                bfd_print_symbol_all);
2633
              if (alloc != NULL)
2634
                {
2635
                  (*current)->name = name;
2636
                  free (alloc);
2637
                }
2638
            }
2639
          else
2640
            bfd_print_symbol (cur_bfd, stdout, *current,
2641
                              bfd_print_symbol_all);
2642
          printf ("\n");
2643
        }
2644
 
2645
      current++;
2646
    }
2647
  printf ("\n\n");
2648
}
2649
 
2650
static void
2651
dump_reloc_set (bfd *abfd, asection *sec, arelent **relpp, long relcount)
2652
{
2653
  arelent **p;
2654
  char *last_filename, *last_functionname;
2655
  unsigned int last_line;
2656
 
2657
  /* Get column headers lined up reasonably.  */
2658
  {
2659
    static int width;
2660
 
2661
    if (width == 0)
2662
      {
2663
        char buf[30];
2664
 
2665
        bfd_sprintf_vma (abfd, buf, (bfd_vma) -1);
2666
        width = strlen (buf) - 7;
2667
      }
2668
    printf ("OFFSET %*s TYPE %*s VALUE \n", width, "", 12, "");
2669
  }
2670
 
2671
  last_filename = NULL;
2672
  last_functionname = NULL;
2673
  last_line = 0;
2674
 
2675
  for (p = relpp; relcount && *p != NULL; p++, relcount--)
2676
    {
2677
      arelent *q = *p;
2678
      const char *filename, *functionname;
2679
      unsigned int line;
2680
      const char *sym_name;
2681
      const char *section_name;
2682
 
2683
      if (start_address != (bfd_vma) -1
2684
          && q->address < start_address)
2685
        continue;
2686
      if (stop_address != (bfd_vma) -1
2687
          && q->address > stop_address)
2688
        continue;
2689
 
2690
      if (with_line_numbers
2691
          && sec != NULL
2692
          && bfd_find_nearest_line (abfd, sec, syms, q->address,
2693
                                    &filename, &functionname, &line))
2694
        {
2695
          if (functionname != NULL
2696
              && (last_functionname == NULL
2697
                  || strcmp (functionname, last_functionname) != 0))
2698
            {
2699
              printf ("%s():\n", functionname);
2700
              if (last_functionname != NULL)
2701
                free (last_functionname);
2702
              last_functionname = xstrdup (functionname);
2703
            }
2704
 
2705
          if (line > 0
2706
              && (line != last_line
2707
                  || (filename != NULL
2708
                      && last_filename != NULL
2709
                      && strcmp (filename, last_filename) != 0)))
2710
            {
2711
              printf ("%s:%u\n", filename == NULL ? "???" : filename, line);
2712
              last_line = line;
2713
              if (last_filename != NULL)
2714
                free (last_filename);
2715
              if (filename == NULL)
2716
                last_filename = NULL;
2717
              else
2718
                last_filename = xstrdup (filename);
2719
            }
2720
        }
2721
 
2722
      if (q->sym_ptr_ptr && *q->sym_ptr_ptr)
2723
        {
2724
          sym_name = (*(q->sym_ptr_ptr))->name;
2725
          section_name = (*(q->sym_ptr_ptr))->section->name;
2726
        }
2727
      else
2728
        {
2729
          sym_name = NULL;
2730
          section_name = NULL;
2731
        }
2732
 
2733
      bfd_printf_vma (abfd, q->address);
2734
      if (q->howto == NULL)
2735
        printf (" *unknown*         ");
2736
      else if (q->howto->name)
2737
        printf (" %-16s  ", q->howto->name);
2738
      else
2739
        printf (" %-16d  ", q->howto->type);
2740
      if (sym_name)
2741
        objdump_print_symname (abfd, NULL, *q->sym_ptr_ptr);
2742
      else
2743
        {
2744
          if (section_name == NULL)
2745
            section_name = "*unknown*";
2746
          printf ("[%s]", section_name);
2747
        }
2748
 
2749
      if (q->addend)
2750
        {
2751
          printf ("+0x");
2752
          bfd_printf_vma (abfd, q->addend);
2753
        }
2754
 
2755
      printf ("\n");
2756
    }
2757
}
2758
 
2759
static void
2760
dump_relocs_in_section (bfd *abfd,
2761
                        asection *section,
2762
                        void *dummy ATTRIBUTE_UNUSED)
2763
{
2764
  arelent **relpp;
2765
  long relcount;
2766
  long relsize;
2767
 
2768
  if (   bfd_is_abs_section (section)
2769
      || bfd_is_und_section (section)
2770
      || bfd_is_com_section (section)
2771
      || (! process_section_p (section))
2772
      || ((section->flags & SEC_RELOC) == 0))
2773
    return;
2774
 
2775
  relsize = bfd_get_reloc_upper_bound (abfd, section);
2776
  if (relsize < 0)
2777
    bfd_fatal (bfd_get_filename (abfd));
2778
 
2779
  printf ("RELOCATION RECORDS FOR [%s]:", section->name);
2780
 
2781
  if (relsize == 0)
2782
    {
2783
      printf (" (none)\n\n");
2784
      return;
2785
    }
2786
 
2787
  relpp = xmalloc (relsize);
2788
  relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
2789
 
2790
  if (relcount < 0)
2791
    bfd_fatal (bfd_get_filename (abfd));
2792
  else if (relcount == 0)
2793
    printf (" (none)\n\n");
2794
  else
2795
    {
2796
      printf ("\n");
2797
      dump_reloc_set (abfd, section, relpp, relcount);
2798
      printf ("\n\n");
2799
    }
2800
  free (relpp);
2801
}
2802
 
2803
static void
2804
dump_relocs (bfd *abfd)
2805
{
2806
  bfd_map_over_sections (abfd, dump_relocs_in_section, NULL);
2807
}
2808
 
2809
static void
2810
dump_dynamic_relocs (bfd *abfd)
2811
{
2812
  long relsize;
2813
  arelent **relpp;
2814
  long relcount;
2815
 
2816
  relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2817
  if (relsize < 0)
2818
    bfd_fatal (bfd_get_filename (abfd));
2819
 
2820
  printf ("DYNAMIC RELOCATION RECORDS");
2821
 
2822
  if (relsize == 0)
2823
    printf (" (none)\n\n");
2824
  else
2825
    {
2826
      relpp = xmalloc (relsize);
2827
      relcount = bfd_canonicalize_dynamic_reloc (abfd, relpp, dynsyms);
2828
 
2829
      if (relcount < 0)
2830
        bfd_fatal (bfd_get_filename (abfd));
2831
      else if (relcount == 0)
2832
        printf (" (none)\n\n");
2833
      else
2834
        {
2835
          printf ("\n");
2836
          dump_reloc_set (abfd, NULL, relpp, relcount);
2837
          printf ("\n\n");
2838
        }
2839
      free (relpp);
2840
    }
2841
}
2842
 
2843
/* Creates a table of paths, to search for source files.  */
2844
 
2845
static void
2846
add_include_path (const char *path)
2847
{
2848
  if (path[0] == 0)
2849
    return;
2850
  include_path_count++;
2851
  include_paths = xrealloc (include_paths,
2852
                            include_path_count * sizeof (*include_paths));
2853
#ifdef HAVE_DOS_BASED_FILE_SYSTEM
2854
  if (path[1] == ':' && path[2] == 0)
2855
    path = concat (path, ".", (const char *) 0);
2856
#endif
2857
  include_paths[include_path_count - 1] = path;
2858
}
2859
 
2860
static void
2861
adjust_addresses (bfd *abfd ATTRIBUTE_UNUSED,
2862
                  asection *section,
2863
                  void *arg)
2864
{
2865
  if ((section->flags & SEC_DEBUGGING) == 0)
2866
    {
2867
      bfd_boolean *has_reloc_p = (bfd_boolean *) arg;
2868
      section->vma += adjust_section_vma;
2869
      if (*has_reloc_p)
2870
        section->lma += adjust_section_vma;
2871
    }
2872
}
2873
 
2874
/* Dump selected contents of ABFD.  */
2875
 
2876
static void
2877
dump_bfd (bfd *abfd)
2878
{
2879
  /* If we are adjusting section VMA's, change them all now.  Changing
2880
     the BFD information is a hack.  However, we must do it, or
2881
     bfd_find_nearest_line will not do the right thing.  */
2882
  if (adjust_section_vma != 0)
2883
    {
2884
      bfd_boolean has_reloc = (abfd->flags & HAS_RELOC);
2885
      bfd_map_over_sections (abfd, adjust_addresses, &has_reloc);
2886
    }
2887
 
2888
  if (! dump_debugging_tags)
2889
    printf (_("\n%s:     file format %s\n"), bfd_get_filename (abfd),
2890
            abfd->xvec->name);
2891
  if (dump_ar_hdrs)
2892
    print_arelt_descr (stdout, abfd, TRUE);
2893
  if (dump_file_header)
2894
    dump_bfd_header (abfd);
2895
  if (dump_private_headers)
2896
    dump_bfd_private_header (abfd);
2897
  if (! dump_debugging_tags)
2898
    putchar ('\n');
2899
  if (dump_section_headers)
2900
    dump_headers (abfd);
2901
 
2902
  if (dump_symtab
2903
      || dump_reloc_info
2904
      || disassemble
2905
      || dump_debugging
2906
      || dump_dwarf_section_info)
2907
    syms = slurp_symtab (abfd);
2908
  if (dump_dynamic_symtab || dump_dynamic_reloc_info
2909
      || (disassemble && bfd_get_dynamic_symtab_upper_bound (abfd) > 0))
2910
    dynsyms = slurp_dynamic_symtab (abfd);
2911
  if (disassemble)
2912
    {
2913
      synthcount = bfd_get_synthetic_symtab (abfd, symcount, syms,
2914
                                             dynsymcount, dynsyms, &synthsyms);
2915
      if (synthcount < 0)
2916
        synthcount = 0;
2917
    }
2918
 
2919
  if (dump_symtab)
2920
    dump_symbols (abfd, FALSE);
2921
  if (dump_dynamic_symtab)
2922
    dump_symbols (abfd, TRUE);
2923
  if (dump_dwarf_section_info)
2924
    dump_dwarf (abfd);
2925
  if (dump_stab_section_info)
2926
    dump_stabs (abfd);
2927
  if (dump_reloc_info && ! disassemble)
2928
    dump_relocs (abfd);
2929
  if (dump_dynamic_reloc_info && ! disassemble)
2930
    dump_dynamic_relocs (abfd);
2931
  if (dump_section_contents)
2932
    dump_data (abfd);
2933
  if (disassemble)
2934
    disassemble_data (abfd);
2935
 
2936
  if (dump_debugging)
2937
    {
2938
      void *dhandle;
2939
 
2940
      dhandle = read_debugging_info (abfd, syms, symcount);
2941
      if (dhandle != NULL)
2942
        {
2943
          if (!print_debugging_info (stdout, dhandle, abfd, syms,
2944
                                     bfd_demangle,
2945
                                     dump_debugging_tags ? TRUE : FALSE))
2946
            {
2947
              non_fatal (_("%s: printing debugging information failed"),
2948
                         bfd_get_filename (abfd));
2949
              exit_status = 1;
2950
            }
2951
        }
2952
    }
2953
 
2954
  if (syms)
2955
    {
2956
      free (syms);
2957
      syms = NULL;
2958
    }
2959
 
2960
  if (dynsyms)
2961
    {
2962
      free (dynsyms);
2963
      dynsyms = NULL;
2964
    }
2965
 
2966
  if (synthsyms)
2967
    {
2968
      free (synthsyms);
2969
      synthsyms = NULL;
2970
    }
2971
 
2972
  symcount = 0;
2973
  dynsymcount = 0;
2974
  synthcount = 0;
2975
}
2976
 
2977
static void
2978
display_bfd (bfd *abfd)
2979
{
2980
  char **matching;
2981
 
2982
  if (bfd_check_format_matches (abfd, bfd_object, &matching))
2983
    {
2984
      dump_bfd (abfd);
2985
      return;
2986
    }
2987
 
2988
  if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
2989
    {
2990
      nonfatal (bfd_get_filename (abfd));
2991
      list_matching_formats (matching);
2992
      free (matching);
2993
      return;
2994
    }
2995
 
2996
  if (bfd_get_error () != bfd_error_file_not_recognized)
2997
    {
2998
      nonfatal (bfd_get_filename (abfd));
2999
      return;
3000
    }
3001
 
3002
  if (bfd_check_format_matches (abfd, bfd_core, &matching))
3003
    {
3004
      dump_bfd (abfd);
3005
      return;
3006
    }
3007
 
3008
  nonfatal (bfd_get_filename (abfd));
3009
 
3010
  if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
3011
    {
3012
      list_matching_formats (matching);
3013
      free (matching);
3014
    }
3015
}
3016
 
3017
static void
3018
display_file (char *filename, char *target)
3019
{
3020
  bfd *file;
3021
  bfd *arfile = NULL;
3022
 
3023
  if (get_file_size (filename) < 1)
3024
    {
3025
      exit_status = 1;
3026
      return;
3027
    }
3028
 
3029
  file = bfd_openr (filename, target);
3030
  if (file == NULL)
3031
    {
3032
      nonfatal (filename);
3033
      return;
3034
    }
3035
 
3036
  /* If the file is an archive, process all of its elements.  */
3037
  if (bfd_check_format (file, bfd_archive))
3038
    {
3039
      bfd *last_arfile = NULL;
3040
 
3041
      printf (_("In archive %s:\n"), bfd_get_filename (file));
3042
      for (;;)
3043
        {
3044
          bfd_set_error (bfd_error_no_error);
3045
 
3046
          arfile = bfd_openr_next_archived_file (file, arfile);
3047
          if (arfile == NULL)
3048
            {
3049
              if (bfd_get_error () != bfd_error_no_more_archived_files)
3050
                nonfatal (bfd_get_filename (file));
3051
              break;
3052
            }
3053
 
3054
          display_bfd (arfile);
3055
 
3056
          if (last_arfile != NULL)
3057
            bfd_close (last_arfile);
3058
          last_arfile = arfile;
3059
        }
3060
 
3061
      if (last_arfile != NULL)
3062
        bfd_close (last_arfile);
3063
    }
3064
  else
3065
    display_bfd (file);
3066
 
3067
  bfd_close (file);
3068
}
3069
 
3070
int
3071
main (int argc, char **argv)
3072
{
3073
  int c;
3074
  char *target = default_target;
3075
  bfd_boolean seenflag = FALSE;
3076
 
3077
#if defined (HAVE_SETLOCALE)
3078
#if defined (HAVE_LC_MESSAGES)
3079
  setlocale (LC_MESSAGES, "");
3080
#endif
3081
  setlocale (LC_CTYPE, "");
3082
#endif
3083
 
3084
  bindtextdomain (PACKAGE, LOCALEDIR);
3085
  textdomain (PACKAGE);
3086
 
3087
  program_name = *argv;
3088
  xmalloc_set_program_name (program_name);
3089
 
3090
  START_PROGRESS (program_name, 0);
3091
 
3092
  expandargv (&argc, &argv);
3093
 
3094
  bfd_init ();
3095
  set_default_bfd_target ();
3096
 
3097
  while ((c = getopt_long (argc, argv, "pib:m:M:VvCdDlfFaHhrRtTxsSI:j:wE:zgeGW",
3098
                           long_options, (int *) 0))
3099
         != EOF)
3100
    {
3101
      switch (c)
3102
        {
3103
        case 0:
3104
          break;                /* We've been given a long option.  */
3105
        case 'm':
3106
          machine = optarg;
3107
          break;
3108
        case 'M':
3109
          if (disassembler_options)
3110
            /* Ignore potential memory leak for now.  */
3111
            disassembler_options = concat (disassembler_options, ",",
3112
                                           optarg, (const char *) NULL);
3113
          else
3114
            disassembler_options = optarg;
3115
          break;
3116
        case 'j':
3117
          if (only_used == only_size)
3118
            {
3119
              only_size += 8;
3120
              only = xrealloc (only, only_size * sizeof (char *));
3121
            }
3122
          only [only_used++] = optarg;
3123
          break;
3124
        case 'F':
3125
          display_file_offsets = TRUE;
3126
          break;
3127
        case 'l':
3128
          with_line_numbers = TRUE;
3129
          break;
3130
        case 'b':
3131
          target = optarg;
3132
          break;
3133
        case 'C':
3134
          do_demangle = TRUE;
3135
          if (optarg != NULL)
3136
            {
3137
              enum demangling_styles style;
3138
 
3139
              style = cplus_demangle_name_to_style (optarg);
3140
              if (style == unknown_demangling)
3141
                fatal (_("unknown demangling style `%s'"),
3142
                       optarg);
3143
 
3144
              cplus_demangle_set_style (style);
3145
            }
3146
          break;
3147
        case 'w':
3148
          wide_output = TRUE;
3149
          break;
3150
        case OPTION_ADJUST_VMA:
3151
          adjust_section_vma = parse_vma (optarg, "--adjust-vma");
3152
          break;
3153
        case OPTION_START_ADDRESS:
3154
          start_address = parse_vma (optarg, "--start-address");
3155
          if ((stop_address != (bfd_vma) -1) && stop_address <= start_address)
3156
            fatal (_("error: the start address should be before the end address"));
3157
          break;
3158
        case OPTION_STOP_ADDRESS:
3159
          stop_address = parse_vma (optarg, "--stop-address");
3160
          if ((start_address != (bfd_vma) -1) && stop_address <= start_address)
3161
            fatal (_("error: the stop address should be after the start address"));
3162
          break;
3163
        case 'E':
3164
          if (strcmp (optarg, "B") == 0)
3165
            endian = BFD_ENDIAN_BIG;
3166
          else if (strcmp (optarg, "L") == 0)
3167
            endian = BFD_ENDIAN_LITTLE;
3168
          else
3169
            {
3170
              non_fatal (_("unrecognized -E option"));
3171
              usage (stderr, 1);
3172
            }
3173
          break;
3174
        case OPTION_ENDIAN:
3175
          if (strncmp (optarg, "big", strlen (optarg)) == 0)
3176
            endian = BFD_ENDIAN_BIG;
3177
          else if (strncmp (optarg, "little", strlen (optarg)) == 0)
3178
            endian = BFD_ENDIAN_LITTLE;
3179
          else
3180
            {
3181
              non_fatal (_("unrecognized --endian type `%s'"), optarg);
3182
              usage (stderr, 1);
3183
            }
3184
          break;
3185
 
3186
        case 'f':
3187
          dump_file_header = TRUE;
3188
          seenflag = TRUE;
3189
          break;
3190
        case 'i':
3191
          formats_info = TRUE;
3192
          seenflag = TRUE;
3193
          break;
3194
        case 'I':
3195
          add_include_path (optarg);
3196
          break;
3197
        case 'p':
3198
          dump_private_headers = TRUE;
3199
          seenflag = TRUE;
3200
          break;
3201
        case 'x':
3202
          dump_private_headers = TRUE;
3203
          dump_symtab = TRUE;
3204
          dump_reloc_info = TRUE;
3205
          dump_file_header = TRUE;
3206
          dump_ar_hdrs = TRUE;
3207
          dump_section_headers = TRUE;
3208
          seenflag = TRUE;
3209
          break;
3210
        case 't':
3211
          dump_symtab = TRUE;
3212
          seenflag = TRUE;
3213
          break;
3214
        case 'T':
3215
          dump_dynamic_symtab = TRUE;
3216
          seenflag = TRUE;
3217
          break;
3218
        case 'd':
3219
          disassemble = TRUE;
3220
          seenflag = TRUE;
3221
          break;
3222
        case 'z':
3223
          disassemble_zeroes = TRUE;
3224
          break;
3225
        case 'D':
3226
          disassemble = TRUE;
3227
          disassemble_all = TRUE;
3228
          seenflag = TRUE;
3229
          break;
3230
        case 'S':
3231
          disassemble = TRUE;
3232
          with_source_code = TRUE;
3233
          seenflag = TRUE;
3234
          break;
3235
        case 'g':
3236
          dump_debugging = 1;
3237
          seenflag = TRUE;
3238
          break;
3239
        case 'e':
3240
          dump_debugging = 1;
3241
          dump_debugging_tags = 1;
3242
          do_demangle = TRUE;
3243
          seenflag = TRUE;
3244
          break;
3245
        case 'W':
3246
          dump_dwarf_section_info = TRUE;
3247
          seenflag = TRUE;
3248
          do_debug_info = 1;
3249
          do_debug_abbrevs = 1;
3250
          do_debug_lines = 1;
3251
          do_debug_pubnames = 1;
3252
          do_debug_aranges = 1;
3253
          do_debug_ranges = 1;
3254
          do_debug_frames = 1;
3255
          do_debug_macinfo = 1;
3256
          do_debug_str = 1;
3257
          do_debug_loc = 1;
3258
          break;
3259
        case 'G':
3260
          dump_stab_section_info = TRUE;
3261
          seenflag = TRUE;
3262
          break;
3263
        case 's':
3264
          dump_section_contents = TRUE;
3265
          seenflag = TRUE;
3266
          break;
3267
        case 'r':
3268
          dump_reloc_info = TRUE;
3269
          seenflag = TRUE;
3270
          break;
3271
        case 'R':
3272
          dump_dynamic_reloc_info = TRUE;
3273
          seenflag = TRUE;
3274
          break;
3275
        case 'a':
3276
          dump_ar_hdrs = TRUE;
3277
          seenflag = TRUE;
3278
          break;
3279
        case 'h':
3280
          dump_section_headers = TRUE;
3281
          seenflag = TRUE;
3282
          break;
3283
        case 'H':
3284
          usage (stdout, 0);
3285
          seenflag = TRUE;
3286
        case 'v':
3287
        case 'V':
3288
          show_version = TRUE;
3289
          seenflag = TRUE;
3290
          break;
3291
 
3292
        default:
3293
          usage (stderr, 1);
3294
        }
3295
    }
3296
 
3297
  if (show_version)
3298
    print_version ("objdump");
3299
 
3300
  if (!seenflag)
3301
    usage (stderr, 2);
3302
 
3303
  if (formats_info)
3304
    exit_status = display_info ();
3305
  else
3306
    {
3307
      if (optind == argc)
3308
        display_file ("a.out", target);
3309
      else
3310
        for (; optind < argc;)
3311
          display_file (argv[optind++], target);
3312
    }
3313
 
3314
  END_PROGRESS (program_name);
3315
 
3316
  return exit_status;
3317
}

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