-
Notifications
You must be signed in to change notification settings - Fork 4
/
Copy pathnm.c
1824 lines (1567 loc) · 46.8 KB
/
nm.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/* nm.c -- Describe symbol table of a rel file.
Copyright (C) 1991-2019 Free Software Foundation, Inc.
This file is part of GNU Binutils.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
02110-1301, USA. */
#include "sysdep.h"
#include "bfd.h"
#include "progress.h"
#include "getopt.h"
#include "aout/stab_gnu.h"
#include "aout/ranlib.h"
#include "demangle.h"
#include "libiberty.h"
#include "elf-bfd.h"
#include "elf/common.h"
#define DO_NOT_DEFINE_AOUTHDR
#define DO_NOT_DEFINE_FILHDR
#define DO_NOT_DEFINE_LINENO
#define DO_NOT_DEFINE_SCNHDR
#include "coff/external.h"
#include "coff/internal.h"
#include "libcoff.h"
#include "bucomm.h"
#include "plugin-api.h"
#include "plugin.h"
/* When sorting by size, we use this structure to hold the size and a
pointer to the minisymbol. */
struct size_sym
{
const void *minisym;
bfd_vma size;
};
/* When fetching relocs, we use this structure to pass information to
get_relocs. */
struct get_relocs_info
{
asection **secs;
arelent ***relocs;
long *relcount;
asymbol **syms;
};
struct extended_symbol_info
{
symbol_info *sinfo;
bfd_vma ssize;
elf_symbol_type *elfinfo;
coff_symbol_type *coffinfo;
/* FIXME: We should add more fields for Type, Line, Section. */
};
#define SYM_NAME(sym) (sym->sinfo->name)
#define SYM_VALUE(sym) (sym->sinfo->value)
#define SYM_TYPE(sym) (sym->sinfo->type)
#define SYM_STAB_NAME(sym) (sym->sinfo->stab_name)
#define SYM_STAB_DESC(sym) (sym->sinfo->stab_desc)
#define SYM_STAB_OTHER(sym) (sym->sinfo->stab_other)
#define SYM_SIZE(sym) \
(sym->elfinfo ? sym->elfinfo->internal_elf_sym.st_size: sym->ssize)
/* The output formatting functions. */
static void print_object_filename_bsd (char *);
static void print_object_filename_sysv (char *);
static void print_object_filename_posix (char *);
static void print_archive_filename_bsd (char *);
static void print_archive_filename_sysv (char *);
static void print_archive_filename_posix (char *);
static void print_archive_member_bsd (char *, const char *);
static void print_archive_member_sysv (char *, const char *);
static void print_archive_member_posix (char *, const char *);
static void print_symbol_filename_bsd (bfd *, bfd *);
static void print_symbol_filename_sysv (bfd *, bfd *);
static void print_symbol_filename_posix (bfd *, bfd *);
static void print_value (bfd *, bfd_vma);
static void print_symbol_info_bsd (struct extended_symbol_info *, bfd *);
static void print_symbol_info_sysv (struct extended_symbol_info *, bfd *);
static void print_symbol_info_posix (struct extended_symbol_info *, bfd *);
/* Support for different output formats. */
struct output_fns
{
/* Print the name of an object file given on the command line. */
void (*print_object_filename) (char *);
/* Print the name of an archive file given on the command line. */
void (*print_archive_filename) (char *);
/* Print the name of an archive member file. */
void (*print_archive_member) (char *, const char *);
/* Print the name of the file (and archive, if there is one)
containing a symbol. */
void (*print_symbol_filename) (bfd *, bfd *);
/* Print a line of information about a symbol. */
void (*print_symbol_info) (struct extended_symbol_info *, bfd *);
};
static struct output_fns formats[] =
{
{print_object_filename_bsd,
print_archive_filename_bsd,
print_archive_member_bsd,
print_symbol_filename_bsd,
print_symbol_info_bsd},
{print_object_filename_sysv,
print_archive_filename_sysv,
print_archive_member_sysv,
print_symbol_filename_sysv,
print_symbol_info_sysv},
{print_object_filename_posix,
print_archive_filename_posix,
print_archive_member_posix,
print_symbol_filename_posix,
print_symbol_info_posix}
};
/* Indices in `formats'. */
#define FORMAT_BSD 0
#define FORMAT_SYSV 1
#define FORMAT_POSIX 2
#define FORMAT_DEFAULT FORMAT_BSD
/* The output format to use. */
static struct output_fns *format = &formats[FORMAT_DEFAULT];
/* Command options. */
static int do_demangle = 0; /* Pretty print C++ symbol names. */
static int external_only = 0; /* Print external symbols only. */
static int defined_only = 0; /* Print defined symbols only. */
static int no_sort = 0; /* Don't sort; print syms in order found. */
static int print_debug_syms = 0;/* Print debugger-only symbols too. */
static int print_armap = 0; /* Describe __.SYMDEF data in archive files. */
static int print_size = 0; /* Print size of defined symbols. */
static int reverse_sort = 0; /* Sort in downward(alpha or numeric) order. */
static int sort_numerically = 0;/* Sort in numeric rather than alpha order. */
static int sort_by_size = 0; /* Sort by size of symbol. */
static int undefined_only = 0; /* Print undefined symbols only. */
static int dynamic = 0; /* Print dynamic symbols. */
static int show_version = 0; /* Show the version number. */
static int show_synthetic = 0; /* Display synthesized symbols too. */
static int line_numbers = 0; /* Print line numbers for symbols. */
static int allow_special_symbols = 0; /* Allow special symbols. */
static int with_symbol_versions = 0; /* Include symbol version information in the output. */
static int demangle_flags = DMGL_ANSI | DMGL_PARAMS;
/* When to print the names of files. Not mutually exclusive in SYSV format. */
static int filename_per_file = 0; /* Once per file, on its own line. */
static int filename_per_symbol = 0; /* Once per symbol, at start of line. */
/* Print formats for printing a symbol value. */
static char value_format_32bit[] = "%08lx";
#if BFD_HOST_64BIT_LONG
static char value_format_64bit[] = "%016lx";
#elif BFD_HOST_64BIT_LONG_LONG
#ifndef __MSVCRT__
static char value_format_64bit[] = "%016llx";
#else
static char value_format_64bit[] = "%016I64x";
#endif
#endif
static int print_width = 0;
static int print_radix = 16;
/* Print formats for printing stab info. */
static char other_format[] = "%02x";
static char desc_format[] = "%04x";
static char *target = NULL;
#if BFD_SUPPORTS_PLUGINS
static const char *plugin_target = "plugin";
#else
static const char *plugin_target = NULL;
#endif
/* Used to cache the line numbers for a BFD. */
static bfd *lineno_cache_bfd;
static bfd *lineno_cache_rel_bfd;
enum long_option_values
{
OPTION_TARGET = 200,
OPTION_PLUGIN,
OPTION_SIZE_SORT,
OPTION_RECURSE_LIMIT,
OPTION_NO_RECURSE_LIMIT
};
static struct option long_options[] =
{
{"debug-syms", no_argument, &print_debug_syms, 1},
{"demangle", optional_argument, 0, 'C'},
{"dynamic", no_argument, &dynamic, 1},
{"extern-only", no_argument, &external_only, 1},
{"format", required_argument, 0, 'f'},
{"help", no_argument, 0, 'h'},
{"line-numbers", no_argument, 0, 'l'},
{"no-cplus", no_argument, &do_demangle, 0}, /* Linux compatibility. */
{"no-demangle", no_argument, &do_demangle, 0},
{"no-recurse-limit", no_argument, NULL, OPTION_NO_RECURSE_LIMIT},
{"no-recursion-limit", no_argument, NULL, OPTION_NO_RECURSE_LIMIT},
{"no-sort", no_argument, 0, 'p'},
{"numeric-sort", no_argument, 0, 'n'},
{"plugin", required_argument, 0, OPTION_PLUGIN},
{"portability", no_argument, 0, 'P'},
{"print-armap", no_argument, &print_armap, 1},
{"print-file-name", no_argument, 0, 'o'},
{"print-size", no_argument, 0, 'S'},
{"radix", required_argument, 0, 't'},
{"recurse-limit", no_argument, NULL, OPTION_RECURSE_LIMIT},
{"recursion-limit", no_argument, NULL, OPTION_RECURSE_LIMIT},
{"reverse-sort", no_argument, &reverse_sort, 1},
{"size-sort", no_argument, 0, OPTION_SIZE_SORT},
{"special-syms", no_argument, &allow_special_symbols, 1},
{"synthetic", no_argument, &show_synthetic, 1},
{"target", required_argument, 0, OPTION_TARGET},
{"defined-only", no_argument, &defined_only, 1},
{"undefined-only", no_argument, &undefined_only, 1},
{"version", no_argument, &show_version, 1},
{"with-symbol-versions", no_argument, &with_symbol_versions, 1},
{0, no_argument, 0, 0}
};
/* Some error-reporting functions. */
ATTRIBUTE_NORETURN static void
usage (FILE *stream, int status)
{
fprintf (stream, _("Usage: %s [option(s)] [file(s)]\n"), program_name);
fprintf (stream, _(" List symbols in [file(s)] (a.out by default).\n"));
fprintf (stream, _(" The options are:\n\
-a, --debug-syms Display debugger-only symbols\n\
-A, --print-file-name Print name of the input file before every symbol\n\
-B Same as --format=bsd\n\
-C, --demangle[=STYLE] Decode low-level symbol names into user-level names\n\
The STYLE, if specified, can be `auto' (the default),\n\
`gnu', `lucid', `arm', `hp', `edg', `gnu-v3', `java'\n\
or `gnat'\n\
--no-demangle Do not demangle low-level symbol names\n\
--recurse-limit Enable a demangling recursion limit. This is the default.\n\
--no-recurse-limit Disable a demangling recursion limit.\n\
-D, --dynamic Display dynamic symbols instead of normal symbols\n\
--defined-only Display only defined symbols\n\
-e (ignored)\n\
-f, --format=FORMAT Use the output format FORMAT. FORMAT can be `bsd',\n\
`sysv' or `posix'. The default is `bsd'\n\
-g, --extern-only Display only external symbols\n\
-l, --line-numbers Use debugging information to find a filename and\n\
line number for each symbol\n\
-n, --numeric-sort Sort symbols numerically by address\n\
-o Same as -A\n\
-p, --no-sort Do not sort the symbols\n\
-P, --portability Same as --format=posix\n\
-r, --reverse-sort Reverse the sense of the sort\n"));
#if BFD_SUPPORTS_PLUGINS
fprintf (stream, _("\
--plugin NAME Load the specified plugin\n"));
#endif
fprintf (stream, _("\
-S, --print-size Print size of defined symbols\n\
-s, --print-armap Include index for symbols from archive members\n\
--size-sort Sort symbols by size\n\
--special-syms Include special symbols in the output\n\
--synthetic Display synthetic symbols as well\n\
-t, --radix=RADIX Use RADIX for printing symbol values\n\
--target=BFDNAME Specify the target object format as BFDNAME\n\
-u, --undefined-only Display only undefined symbols\n\
--with-symbol-versions Display version strings after symbol names\n\
-X 32_64 (ignored)\n\
@FILE Read options from FILE\n\
-h, --help Display this information\n\
-V, --version Display this program's version number\n\
\n"));
list_supported_targets (program_name, stream);
if (REPORT_BUGS_TO[0] && status == 0)
fprintf (stream, _("Report bugs to %s.\n"), REPORT_BUGS_TO);
exit (status);
}
/* Set the radix for the symbol value and size according to RADIX. */
static void
set_print_radix (char *radix)
{
switch (*radix)
{
case 'x':
break;
case 'd':
case 'o':
if (*radix == 'd')
print_radix = 10;
else
print_radix = 8;
value_format_32bit[4] = *radix;
#if BFD_HOST_64BIT_LONG
value_format_64bit[5] = *radix;
#elif BFD_HOST_64BIT_LONG_LONG
#ifndef __MSVCRT__
value_format_64bit[6] = *radix;
#else
value_format_64bit[7] = *radix;
#endif
#endif
other_format[3] = desc_format[3] = *radix;
break;
default:
fatal (_("%s: invalid radix"), radix);
}
}
static void
set_output_format (char *f)
{
int i;
switch (*f)
{
case 'b':
case 'B':
i = FORMAT_BSD;
break;
case 'p':
case 'P':
i = FORMAT_POSIX;
break;
case 's':
case 'S':
i = FORMAT_SYSV;
break;
default:
fatal (_("%s: invalid output format"), f);
}
format = &formats[i];
}
static const char *
get_elf_symbol_type (unsigned int type)
{
static char *bufp;
int n;
switch (type)
{
case STT_NOTYPE: return "NOTYPE";
case STT_OBJECT: return "OBJECT";
case STT_FUNC: return "FUNC";
case STT_SECTION: return "SECTION";
case STT_FILE: return "FILE";
case STT_COMMON: return "COMMON";
case STT_TLS: return "TLS";
}
free (bufp);
if (type >= STT_LOPROC && type <= STT_HIPROC)
n = asprintf (&bufp, _("<processor specific>: %d"), type);
else if (type >= STT_LOOS && type <= STT_HIOS)
n = asprintf (&bufp, _("<OS specific>: %d"), type);
else
n = asprintf (&bufp, _("<unknown>: %d"), type);
if (n < 0)
fatal ("%s", xstrerror (errno));
return bufp;
}
static const char *
get_coff_symbol_type (const struct internal_syment *sym)
{
static char *bufp;
int n;
switch (sym->n_sclass)
{
case C_BLOCK: return "Block";
case C_FILE: return "File";
case C_LINE: return "Line";
}
if (!sym->n_type)
return "None";
switch (DTYPE(sym->n_type))
{
case DT_FCN: return "Function";
case DT_PTR: return "Pointer";
case DT_ARY: return "Array";
}
free (bufp);
n = asprintf (&bufp, _("<unknown>: %d/%d"), sym->n_sclass, sym->n_type);
if (n < 0)
fatal ("%s", xstrerror (errno));
return bufp;
}
/* Print symbol name NAME, read from ABFD, with printf format FORM,
demangling it if requested. */
static void
print_symname (const char *form, const char *name, bfd *abfd)
{
if (do_demangle && *name)
{
char *res = bfd_demangle (abfd, name, demangle_flags);
if (res != NULL)
{
printf (form, res);
free (res);
return;
}
}
printf (form, name);
}
static void
print_symdef_entry (bfd *abfd)
{
symindex idx = BFD_NO_MORE_SYMBOLS;
carsym *thesym;
bfd_boolean everprinted = FALSE;
for (idx = bfd_get_next_mapent (abfd, idx, &thesym);
idx != BFD_NO_MORE_SYMBOLS;
idx = bfd_get_next_mapent (abfd, idx, &thesym))
{
bfd *elt;
if (!everprinted)
{
printf (_("\nArchive index:\n"));
everprinted = TRUE;
}
elt = bfd_get_elt_at_index (abfd, idx);
if (elt == NULL)
bfd_fatal ("bfd_get_elt_at_index");
if (thesym->name != (char *) NULL)
{
print_symname ("%s", thesym->name, abfd);
printf (" in %s\n", bfd_get_filename (elt));
}
}
}
/* Choose which symbol entries to print;
compact them downward to get rid of the rest.
Return the number of symbols to be printed. */
static long
filter_symbols (bfd *abfd, bfd_boolean is_dynamic, void *minisyms,
long symcount, unsigned int size)
{
bfd_byte *from, *fromend, *to;
asymbol *store;
store = bfd_make_empty_symbol (abfd);
if (store == NULL)
bfd_fatal (bfd_get_filename (abfd));
from = (bfd_byte *) minisyms;
fromend = from + symcount * size;
to = (bfd_byte *) minisyms;
for (; from < fromend; from += size)
{
int keep = 0;
asymbol *sym;
PROGRESS (1);
sym = bfd_minisymbol_to_symbol (abfd, is_dynamic, (const void *) from, store);
if (sym == NULL)
bfd_fatal (bfd_get_filename (abfd));
if (sym->name[0] == '_'
&& sym->name[1] == '_'
&& strcmp (sym->name + (sym->name[2] == '_'), "__gnu_lto_slim") == 0)
non_fatal (_("%s: plugin needed to handle lto object"),
bfd_get_filename (abfd));
if (undefined_only)
keep = bfd_is_und_section (sym->section);
else if (external_only)
/* PR binutls/12753: Unique symbols are global too. */
keep = ((sym->flags & (BSF_GLOBAL
| BSF_WEAK
| BSF_GNU_UNIQUE)) != 0
|| bfd_is_und_section (sym->section)
|| bfd_is_com_section (sym->section));
else
keep = 1;
if (keep
&& ! print_debug_syms
&& (sym->flags & BSF_DEBUGGING) != 0)
keep = 0;
if (keep
&& sort_by_size
&& (bfd_is_abs_section (sym->section)
|| bfd_is_und_section (sym->section)))
keep = 0;
if (keep
&& defined_only)
{
if (bfd_is_und_section (sym->section))
keep = 0;
}
if (keep
&& bfd_is_target_special_symbol (abfd, sym)
&& ! allow_special_symbols)
keep = 0;
if (keep)
{
if (to != from)
memcpy (to, from, size);
to += size;
}
}
return (to - (bfd_byte *) minisyms) / size;
}
/* These globals are used to pass information into the sorting
routines. */
static bfd *sort_bfd;
static bfd_boolean sort_dynamic;
static asymbol *sort_x;
static asymbol *sort_y;
/* Symbol-sorting predicates */
#define valueof(x) ((x)->section->vma + (x)->value)
/* Numeric sorts. Undefined symbols are always considered "less than"
defined symbols with zero values. Common symbols are not treated
specially -- i.e., their sizes are used as their "values". */
static int
non_numeric_forward (const void *P_x, const void *P_y)
{
asymbol *x, *y;
const char *xn, *yn;
x = bfd_minisymbol_to_symbol (sort_bfd, sort_dynamic, P_x, sort_x);
y = bfd_minisymbol_to_symbol (sort_bfd, sort_dynamic, P_y, sort_y);
if (x == NULL || y == NULL)
bfd_fatal (bfd_get_filename (sort_bfd));
xn = bfd_asymbol_name (x);
yn = bfd_asymbol_name (y);
if (yn == NULL)
return xn != NULL;
if (xn == NULL)
return -1;
#ifdef HAVE_STRCOLL
/* Solaris 2.5 has a bug in strcoll.
strcoll returns invalid values when confronted with empty strings. */
if (*yn == '\0')
return *xn != '\0';
if (*xn == '\0')
return -1;
return strcoll (xn, yn);
#else
return strcmp (xn, yn);
#endif
}
static int
non_numeric_reverse (const void *x, const void *y)
{
return - non_numeric_forward (x, y);
}
static int
numeric_forward (const void *P_x, const void *P_y)
{
asymbol *x, *y;
asection *xs, *ys;
x = bfd_minisymbol_to_symbol (sort_bfd, sort_dynamic, P_x, sort_x);
y = bfd_minisymbol_to_symbol (sort_bfd, sort_dynamic, P_y, sort_y);
if (x == NULL || y == NULL)
bfd_fatal (bfd_get_filename (sort_bfd));
xs = bfd_get_section (x);
ys = bfd_get_section (y);
if (bfd_is_und_section (xs))
{
if (! bfd_is_und_section (ys))
return -1;
}
else if (bfd_is_und_section (ys))
return 1;
else if (valueof (x) != valueof (y))
return valueof (x) < valueof (y) ? -1 : 1;
return non_numeric_forward (P_x, P_y);
}
static int
numeric_reverse (const void *x, const void *y)
{
return - numeric_forward (x, y);
}
static int (*(sorters[2][2])) (const void *, const void *) =
{
{ non_numeric_forward, non_numeric_reverse },
{ numeric_forward, numeric_reverse }
};
/* This sort routine is used by sort_symbols_by_size. It is similar
to numeric_forward, but when symbols have the same value it sorts
by section VMA. This simplifies the sort_symbols_by_size code
which handles symbols at the end of sections. Also, this routine
tries to sort file names before other symbols with the same value.
That will make the file name have a zero size, which will make
sort_symbols_by_size choose the non file name symbol, leading to
more meaningful output. For similar reasons, this code sorts
gnu_compiled_* and gcc2_compiled before other symbols with the same
value. */
static int
size_forward1 (const void *P_x, const void *P_y)
{
asymbol *x, *y;
asection *xs, *ys;
const char *xn, *yn;
size_t xnl, ynl;
int xf, yf;
x = bfd_minisymbol_to_symbol (sort_bfd, sort_dynamic, P_x, sort_x);
y = bfd_minisymbol_to_symbol (sort_bfd, sort_dynamic, P_y, sort_y);
if (x == NULL || y == NULL)
bfd_fatal (bfd_get_filename (sort_bfd));
xs = bfd_get_section (x);
ys = bfd_get_section (y);
if (bfd_is_und_section (xs))
abort ();
if (bfd_is_und_section (ys))
abort ();
if (valueof (x) != valueof (y))
return valueof (x) < valueof (y) ? -1 : 1;
if (xs->vma != ys->vma)
return xs->vma < ys->vma ? -1 : 1;
xn = bfd_asymbol_name (x);
yn = bfd_asymbol_name (y);
xnl = strlen (xn);
ynl = strlen (yn);
/* The symbols gnu_compiled and gcc2_compiled convey even less
information than the file name, so sort them out first. */
xf = (strstr (xn, "gnu_compiled") != NULL
|| strstr (xn, "gcc2_compiled") != NULL);
yf = (strstr (yn, "gnu_compiled") != NULL
|| strstr (yn, "gcc2_compiled") != NULL);
if (xf && ! yf)
return -1;
if (! xf && yf)
return 1;
/* We use a heuristic for the file name. It may not work on non
Unix systems, but it doesn't really matter; the only difference
is precisely which symbol names get printed. */
#define file_symbol(s, sn, snl) \
(((s)->flags & BSF_FILE) != 0 \
|| ((snl) > 2 \
&& (sn)[(snl) - 2] == '.' \
&& ((sn)[(snl) - 1] == 'o' \
|| (sn)[(snl) - 1] == 'a')))
xf = file_symbol (x, xn, xnl);
yf = file_symbol (y, yn, ynl);
if (xf && ! yf)
return -1;
if (! xf && yf)
return 1;
return non_numeric_forward (P_x, P_y);
}
/* This sort routine is used by sort_symbols_by_size. It is sorting
an array of size_sym structures into size order. */
static int
size_forward2 (const void *P_x, const void *P_y)
{
const struct size_sym *x = (const struct size_sym *) P_x;
const struct size_sym *y = (const struct size_sym *) P_y;
if (x->size < y->size)
return reverse_sort ? 1 : -1;
else if (x->size > y->size)
return reverse_sort ? -1 : 1;
else
return sorters[0][reverse_sort] (x->minisym, y->minisym);
}
/* Sort the symbols by size. ELF provides a size but for other formats
we have to make a guess by assuming that the difference between the
address of a symbol and the address of the next higher symbol is the
size. */
static long
sort_symbols_by_size (bfd *abfd, bfd_boolean is_dynamic, void *minisyms,
long symcount, unsigned int size,
struct size_sym **symsizesp)
{
struct size_sym *symsizes;
bfd_byte *from, *fromend;
asymbol *sym = NULL;
asymbol *store_sym, *store_next;
qsort (minisyms, symcount, size, size_forward1);
/* We are going to return a special set of symbols and sizes to
print. */
symsizes = (struct size_sym *) xmalloc (symcount * sizeof (struct size_sym));
*symsizesp = symsizes;
/* Note that filter_symbols has already removed all absolute and
undefined symbols. Here we remove all symbols whose size winds
up as zero. */
from = (bfd_byte *) minisyms;
fromend = from + symcount * size;
store_sym = sort_x;
store_next = sort_y;
if (from < fromend)
{
sym = bfd_minisymbol_to_symbol (abfd, is_dynamic, (const void *) from,
store_sym);
if (sym == NULL)
bfd_fatal (bfd_get_filename (abfd));
}
for (; from < fromend; from += size)
{
asymbol *next;
asection *sec;
bfd_vma sz;
asymbol *temp;
if (from + size < fromend)
{
next = bfd_minisymbol_to_symbol (abfd,
is_dynamic,
(const void *) (from + size),
store_next);
if (next == NULL)
bfd_fatal (bfd_get_filename (abfd));
}
else
next = NULL;
sec = bfd_get_section (sym);
/* Synthetic symbols don't have a full type set of data available, thus
we can't rely on that information for the symbol size. Ditto for
bfd/section.c:global_syms like *ABS*. */
if ((sym->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) == 0
&& bfd_get_flavour (abfd) == bfd_target_elf_flavour)
sz = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
else if ((sym->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) == 0
&& bfd_is_com_section (sec))
sz = sym->value;
else
{
if (from + size < fromend
&& sec == bfd_get_section (next))
sz = valueof (next) - valueof (sym);
else
sz = (bfd_get_section_vma (abfd, sec)
+ bfd_section_size (abfd, sec)
- valueof (sym));
}
if (sz != 0)
{
symsizes->minisym = (const void *) from;
symsizes->size = sz;
++symsizes;
}
sym = next;
temp = store_sym;
store_sym = store_next;
store_next = temp;
}
symcount = symsizes - *symsizesp;
/* We must now sort again by size. */
qsort ((void *) *symsizesp, symcount, sizeof (struct size_sym), size_forward2);
return symcount;
}
/* This function is used to get the relocs for a particular section.
It is called via bfd_map_over_sections. */
static void
get_relocs (bfd *abfd, asection *sec, void *dataarg)
{
struct get_relocs_info *data = (struct get_relocs_info *) dataarg;
*data->secs = sec;
if ((sec->flags & SEC_RELOC) == 0)
{
*data->relocs = NULL;
*data->relcount = 0;
}
else
{
long relsize;
relsize = bfd_get_reloc_upper_bound (abfd, sec);
if (relsize < 0)
bfd_fatal (bfd_get_filename (abfd));
*data->relocs = (arelent **) xmalloc (relsize);
*data->relcount = bfd_canonicalize_reloc (abfd, sec, *data->relocs,
data->syms);
if (*data->relcount < 0)
bfd_fatal (bfd_get_filename (abfd));
}
++data->secs;
++data->relocs;
++data->relcount;
}
/* Print a single symbol. */
static void
print_symbol (bfd * abfd,
asymbol * sym,
bfd_vma ssize,
bfd * archive_bfd)
{
symbol_info syminfo;
struct extended_symbol_info info;
PROGRESS (1);
format->print_symbol_filename (archive_bfd, abfd);
bfd_get_symbol_info (abfd, sym, &syminfo);
info.sinfo = &syminfo;
info.ssize = ssize;
/* Synthetic symbols do not have a full symbol type set of data available.
Nor do bfd/section.c:global_syms like *ABS*. */
if ((sym->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) != 0)
{
info.elfinfo = NULL;
info.coffinfo = NULL;
}
else
{
info.elfinfo = elf_symbol_from (abfd, sym);
info.coffinfo = coff_symbol_from (sym);
}
format->print_symbol_info (&info, abfd);
if (with_symbol_versions)
{
const char * version_string = NULL;
bfd_boolean hidden = FALSE;
if ((sym->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) == 0)
version_string = bfd_get_symbol_version_string (abfd, sym, &hidden);
if (bfd_is_und_section (bfd_get_section (sym)))
hidden = TRUE;
if (version_string && *version_string != '\0')
printf (hidden ? "@%s" : "@@%s", version_string);
}
if (line_numbers)
{
static asymbol **syms;
static long symcount;
const char *filename, *functionname;
unsigned int lineno;
/* We need to get the canonical symbols in order to call
bfd_find_nearest_line. This is inefficient, but, then, you
don't have to use --line-numbers. */
if (abfd != lineno_cache_bfd && syms != NULL)
{
free (syms);
syms = NULL;
}
if (syms == NULL)
{
long symsize;
symsize = bfd_get_symtab_upper_bound (abfd);
if (symsize < 0)
bfd_fatal (bfd_get_filename (abfd));
syms = (asymbol **) xmalloc (symsize);
symcount = bfd_canonicalize_symtab (abfd, syms);
if (symcount < 0)
bfd_fatal (bfd_get_filename (abfd));
lineno_cache_bfd = abfd;
}
if (bfd_is_und_section (bfd_get_section (sym)))
{
static asection **secs;
static arelent ***relocs;
static long *relcount;
static unsigned int seccount;
unsigned int i;
const char *symname;
/* For an undefined symbol, we try to find a reloc for the
symbol, and print the line number of the reloc. */
if (abfd != lineno_cache_rel_bfd && relocs != NULL)
{
for (i = 0; i < seccount; i++)
if (relocs[i] != NULL)
free (relocs[i]);
free (secs);
free (relocs);
free (relcount);
secs = NULL;
relocs = NULL;
relcount = NULL;
}
if (relocs == NULL)
{
struct get_relocs_info rinfo;
seccount = bfd_count_sections (abfd);
secs = (asection **) xmalloc (seccount * sizeof *secs);
relocs = (arelent ***) xmalloc (seccount * sizeof *relocs);
relcount = (long *) xmalloc (seccount * sizeof *relcount);
rinfo.secs = secs;
rinfo.relocs = relocs;
rinfo.relcount = relcount;
rinfo.syms = syms;
bfd_map_over_sections (abfd, get_relocs, (void *) &rinfo);
lineno_cache_rel_bfd = abfd;
}
symname = bfd_asymbol_name (sym);
for (i = 0; i < seccount; i++)
{
long j;
for (j = 0; j < relcount[i]; j++)
{
arelent *r;
r = relocs[i][j];