blob: 0dd9a6aa0662e235e8e41d03ecf76d02eb41ea6c [file] [log] [blame]
Brian Silverman86497922018-02-10 19:28:39 -05001/* Print information from ELF file in human-readable form.
2 Copyright (C) 2005, 2006, 2007, 2009, 2011, 2012, 2014, 2015 Red Hat, Inc.
3 This file is part of elfutils.
4 Written by Ulrich Drepper <drepper@redhat.com>, 2005.
5
6 This file is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 elfutils is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
18
19#ifdef HAVE_CONFIG_H
20# include <config.h>
21#endif
22
23#include <argp.h>
24#include <error.h>
25#include <fcntl.h>
26#include <inttypes.h>
27#include <libintl.h>
28#include <locale.h>
29#include <stdbool.h>
30#include <stdio.h>
31#include <stdio_ext.h>
32#include <stdlib.h>
33#include <string.h>
34#include <unistd.h>
35
36#include <libeu.h>
37#include <system.h>
38#include <color.h>
39#include <printversion.h>
40#include "../libebl/libeblP.h"
41
42
43/* Name and version of program. */
44ARGP_PROGRAM_VERSION_HOOK_DEF = print_version;
45
46/* Bug report address. */
47ARGP_PROGRAM_BUG_ADDRESS_DEF = PACKAGE_BUGREPORT;
48
49
50/* Definitions of arguments for argp functions. */
51static const struct argp_option options[] =
52{
53 { NULL, 0, NULL, 0, N_("Mode selection:"), 0 },
54 { "reloc", 'r', NULL, 0, N_("Display relocation information."), 0 },
55 { "full-contents", 's', NULL, 0,
56 N_("Display the full contents of all sections requested"), 0 },
57 { "disassemble", 'd', NULL, 0,
58 N_("Display assembler code of executable sections"), 0 },
59
60 { NULL, 0, NULL, 0, N_("Output content selection:"), 0 },
61 { "section", 'j', "NAME", 0,
62 N_("Only display information for section NAME."), 0 },
63
64 { NULL, 0, NULL, 0, NULL, 0 }
65};
66
67/* Short description of program. */
68static const char doc[] = N_("\
69Show information from FILEs (a.out by default).");
70
71/* Strings for arguments in help texts. */
72static const char args_doc[] = N_("[FILE...]");
73
74/* Prototype for option handler. */
75static error_t parse_opt (int key, char *arg, struct argp_state *state);
76
77/* Parser children. */
78static struct argp_child argp_children[] =
79 {
80 { &color_argp, 0, N_("Output formatting"), 2 },
81 { NULL, 0, NULL, 0}
82 };
83
84/* Data structure to communicate with argp functions. */
85static const struct argp argp =
86{
87 options, parse_opt, args_doc, doc, argp_children, NULL, NULL
88};
89
90
91/* Print symbols in file named FNAME. */
92static int process_file (const char *fname, bool more_than_one);
93
94/* Handle content of archive. */
95static int handle_ar (int fd, Elf *elf, const char *prefix, const char *fname,
96 const char *suffix);
97
98/* Handle ELF file. */
99static int handle_elf (Elf *elf, const char *prefix, const char *fname,
100 const char *suffix);
101
102
103#define INTERNAL_ERROR(fname) \
104 error (EXIT_FAILURE, 0, gettext ("%s: INTERNAL ERROR %d (%s): %s"), \
105 fname, __LINE__, PACKAGE_VERSION, elf_errmsg (-1))
106
107
108/* List of sections which should be used. */
109static struct section_list
110{
111 bool is_name;
112 union
113 {
114 const char *name;
115 uint32_t scnndx;
116 };
117 struct section_list *next;
118} *section_list;
119
120
121/* If true print archive index. */
122static bool print_relocs;
123
124/* If true print full contents of requested sections. */
125static bool print_full_content;
126
127/* If true print disassembled output.. */
128static bool print_disasm;
129
130
131int
132main (int argc, char *argv[])
133{
134 /* We use no threads here which can interfere with handling a stream. */
135 (void) __fsetlocking (stdin, FSETLOCKING_BYCALLER);
136 (void) __fsetlocking (stdout, FSETLOCKING_BYCALLER);
137 (void) __fsetlocking (stderr, FSETLOCKING_BYCALLER);
138
139 /* Set locale. */
140 (void) setlocale (LC_ALL, "");
141
142 /* Make sure the message catalog can be found. */
143 (void) bindtextdomain (PACKAGE_TARNAME, LOCALEDIR);
144
145 /* Initialize the message catalog. */
146 (void) textdomain (PACKAGE_TARNAME);
147
148 /* Parse and process arguments. */
149 int remaining;
150 (void) argp_parse (&argp, argc, argv, 0, &remaining, NULL);
151
152 /* Tell the library which version we are expecting. */
153 (void) elf_version (EV_CURRENT);
154
155 int result = 0;
156 if (remaining == argc)
157 /* The user didn't specify a name so we use a.out. */
158 result = process_file ("a.out", false);
159 else
160 {
161 /* Process all the remaining files. */
162 const bool more_than_one = remaining + 1 < argc;
163
164 do
165 result |= process_file (argv[remaining], more_than_one);
166 while (++remaining < argc);
167 }
168
169 return result;
170}
171
172
173/* Handle program arguments. */
174static error_t
175parse_opt (int key, char *arg,
176 struct argp_state *state __attribute__ ((unused)))
177{
178 /* True if any of the control options is set. */
179 static bool any_control_option;
180
181 switch (key)
182 {
183 case 'j':
184 {
185 struct section_list *newp = xmalloc (sizeof (*newp));
186 char *endp;
187 newp->scnndx = strtoul (arg, &endp, 0);
188 if (*endp == 0)
189 newp->is_name = false;
190 else
191 {
192 newp->name = arg;
193 newp->is_name = true;
194 }
195 newp->next = section_list;
196 section_list = newp;
197 }
198 any_control_option = true;
199 break;
200
201 case 'd':
202 print_disasm = true;
203 any_control_option = true;
204 break;
205
206 case 'r':
207 print_relocs = true;
208 any_control_option = true;
209 break;
210
211 case 's':
212 print_full_content = true;
213 any_control_option = true;
214 break;
215
216 case ARGP_KEY_FINI:
217 if (! any_control_option)
218 {
219 fputs (gettext ("No operation specified.\n"), stderr);
220 argp_help (&argp, stderr, ARGP_HELP_SEE,
221 program_invocation_short_name);
222 exit (EXIT_FAILURE);
223 }
224 /* We only use this for checking the number of arguments, we don't
225 actually want to consume them. */
226 FALLTHROUGH;
227 default:
228 return ARGP_ERR_UNKNOWN;
229 }
230 return 0;
231}
232
233
234/* Open the file and determine the type. */
235static int
236process_file (const char *fname, bool more_than_one)
237{
238 /* Open the file. */
239 int fd = open (fname, O_RDONLY);
240 if (fd == -1)
241 {
242 error (0, errno, gettext ("cannot open %s"), fname);
243 return 1;
244 }
245
246 /* Now get the ELF descriptor. */
247 Elf *elf = elf_begin (fd, ELF_C_READ_MMAP, NULL);
248 if (elf != NULL)
249 {
250 if (elf_kind (elf) == ELF_K_ELF)
251 {
252 int result = handle_elf (elf, more_than_one ? "" : NULL,
253 fname, NULL);
254
255 if (elf_end (elf) != 0)
256 INTERNAL_ERROR (fname);
257
258 if (close (fd) != 0)
259 error (EXIT_FAILURE, errno, gettext ("while close `%s'"), fname);
260
261 return result;
262 }
263 else if (elf_kind (elf) == ELF_K_AR)
264 {
265 int result = handle_ar (fd, elf, NULL, fname, NULL);
266
267 if (elf_end (elf) != 0)
268 INTERNAL_ERROR (fname);
269
270 if (close (fd) != 0)
271 error (EXIT_FAILURE, errno, gettext ("while close `%s'"), fname);
272
273 return result;
274 }
275
276 /* We cannot handle this type. Close the descriptor anyway. */
277 if (elf_end (elf) != 0)
278 INTERNAL_ERROR (fname);
279 }
280
281 error (0, 0, gettext ("%s: File format not recognized"), fname);
282
283 return 1;
284}
285
286
287static int
288handle_ar (int fd, Elf *elf, const char *prefix, const char *fname,
289 const char *suffix)
290{
291 size_t fname_len = strlen (fname) + 1;
292 size_t prefix_len = prefix != NULL ? strlen (prefix) : 0;
293 char new_prefix[prefix_len + fname_len + 2];
294 size_t suffix_len = suffix != NULL ? strlen (suffix) : 0;
295 char new_suffix[suffix_len + 2];
296 Elf *subelf;
297 Elf_Cmd cmd = ELF_C_READ_MMAP;
298 int result = 0;
299
300 char *cp = new_prefix;
301 if (prefix != NULL)
302 cp = stpcpy (cp, prefix);
303 cp = stpcpy (cp, fname);
304 stpcpy (cp, "[");
305
306 cp = new_suffix;
307 if (suffix != NULL)
308 cp = stpcpy (cp, suffix);
309 stpcpy (cp, "]");
310
311 /* Process all the files contained in the archive. */
312 while ((subelf = elf_begin (fd, cmd, elf)) != NULL)
313 {
314 /* The the header for this element. */
315 Elf_Arhdr *arhdr = elf_getarhdr (subelf);
316
317 /* Skip over the index entries. */
318 if (strcmp (arhdr->ar_name, "/") != 0
319 && strcmp (arhdr->ar_name, "//") != 0)
320 {
321 if (elf_kind (subelf) == ELF_K_ELF)
322 result |= handle_elf (subelf, new_prefix, arhdr->ar_name,
323 new_suffix);
324 else if (elf_kind (subelf) == ELF_K_AR)
325 result |= handle_ar (fd, subelf, new_prefix, arhdr->ar_name,
326 new_suffix);
327 else
328 {
329 error (0, 0, gettext ("%s%s%s: file format not recognized"),
330 new_prefix, arhdr->ar_name, new_suffix);
331 result = 1;
332 }
333 }
334
335 /* Get next archive element. */
336 cmd = elf_next (subelf);
337 if (elf_end (subelf) != 0)
338 INTERNAL_ERROR (fname);
339 }
340
341 return result;
342}
343
344
345static void
346show_relocs_x (Ebl *ebl, GElf_Shdr *shdr, Elf_Data *symdata,
347 Elf_Data *xndxdata, size_t symstrndx, size_t shstrndx,
348 GElf_Addr r_offset, GElf_Xword r_info, GElf_Sxword r_addend)
349{
350 int elfclass = gelf_getclass (ebl->elf);
351 char buf[128];
352
353 printf ("%0*" PRIx64 " %-20s ",
354 elfclass == ELFCLASS32 ? 8 : 16, r_offset,
355 ebl_reloc_type_name (ebl, GELF_R_TYPE (r_info), buf, sizeof (buf)));
356
357 Elf32_Word xndx;
358 GElf_Sym symmem;
359 GElf_Sym *sym = gelf_getsymshndx (symdata, xndxdata, GELF_R_SYM (r_info),
360 &symmem, &xndx);
361
362 if (sym == NULL)
363 printf ("<%s %ld>",
364 gettext ("INVALID SYMBOL"), (long int) GELF_R_SYM (r_info));
365 else if (GELF_ST_TYPE (sym->st_info) != STT_SECTION)
366 printf ("%s",
367 elf_strptr (ebl->elf, symstrndx, sym->st_name));
368 else
369 {
370 GElf_Shdr destshdr_mem;
371 GElf_Shdr *destshdr;
372 destshdr = gelf_getshdr (elf_getscn (ebl->elf,
373 sym->st_shndx == SHN_XINDEX
374 ? xndx : sym->st_shndx),
375 &destshdr_mem);
376
377 if (shdr == NULL || destshdr == NULL)
378 printf ("<%s %ld>",
379 gettext ("INVALID SECTION"),
380 (long int) (sym->st_shndx == SHN_XINDEX
381 ? xndx : sym->st_shndx));
382 else
383 printf ("%s",
384 elf_strptr (ebl->elf, shstrndx, destshdr->sh_name));
385 }
386
387 if (r_addend != 0)
388 {
389 char sign = '+';
390 if (r_addend < 0)
391 {
392 sign = '-';
393 r_addend = -r_addend;
394 }
395 printf ("%c%#" PRIx64, sign, r_addend);
396 }
397 putchar ('\n');
398}
399
400
401static void
402show_relocs_rel (Ebl *ebl, GElf_Shdr *shdr, Elf_Data *data,
403 Elf_Data *symdata, Elf_Data *xndxdata, size_t symstrndx,
404 size_t shstrndx)
405{
406 size_t sh_entsize = gelf_fsize (ebl->elf, ELF_T_REL, 1, EV_CURRENT);
407 int nentries = shdr->sh_size / sh_entsize;
408
409 for (int cnt = 0; cnt < nentries; ++cnt)
410 {
411 GElf_Rel relmem;
412 GElf_Rel *rel;
413
414 rel = gelf_getrel (data, cnt, &relmem);
415 if (rel != NULL)
416 show_relocs_x (ebl, shdr, symdata, xndxdata, symstrndx, shstrndx,
417 rel->r_offset, rel->r_info, 0);
418 }
419}
420
421
422static void
423show_relocs_rela (Ebl *ebl, GElf_Shdr *shdr, Elf_Data *data,
424 Elf_Data *symdata, Elf_Data *xndxdata, size_t symstrndx,
425 size_t shstrndx)
426{
427 size_t sh_entsize = gelf_fsize (ebl->elf, ELF_T_RELA, 1, EV_CURRENT);
428 int nentries = shdr->sh_size / sh_entsize;
429
430 for (int cnt = 0; cnt < nentries; ++cnt)
431 {
432 GElf_Rela relmem;
433 GElf_Rela *rel;
434
435 rel = gelf_getrela (data, cnt, &relmem);
436 if (rel != NULL)
437 show_relocs_x (ebl, shdr, symdata, xndxdata, symstrndx, shstrndx,
438 rel->r_offset, rel->r_info, rel->r_addend);
439 }
440}
441
442
443static bool
444section_match (Elf *elf, uint32_t scnndx, GElf_Shdr *shdr, size_t shstrndx)
445{
446 if (section_list == NULL)
447 return true;
448
449 struct section_list *runp = section_list;
450 const char *name = elf_strptr (elf, shstrndx, shdr->sh_name);
451
452 do
453 {
454 if (runp->is_name)
455 {
456 if (name && strcmp (runp->name, name) == 0)
457 return true;
458 }
459 else
460 {
461 if (runp->scnndx == scnndx)
462 return true;
463 }
464
465 runp = runp->next;
466 }
467 while (runp != NULL);
468
469 return false;
470}
471
472
473static int
474show_relocs (Ebl *ebl, const char *fname, uint32_t shstrndx)
475{
476 int elfclass = gelf_getclass (ebl->elf);
477
478 Elf_Scn *scn = NULL;
479 while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
480 {
481 GElf_Shdr shdr_mem;
482 GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
483
484 if (shdr == NULL)
485 INTERNAL_ERROR (fname);
486
487 if (shdr->sh_type == SHT_REL || shdr->sh_type == SHT_RELA)
488 {
489 if (! section_match (ebl->elf, elf_ndxscn (scn), shdr, shstrndx))
490 continue;
491
492 GElf_Shdr destshdr_mem;
493 GElf_Shdr *destshdr = gelf_getshdr (elf_getscn (ebl->elf,
494 shdr->sh_info),
495 &destshdr_mem);
496 if (unlikely (destshdr == NULL))
497 continue;
498
499 printf (gettext ("\nRELOCATION RECORDS FOR [%s]:\n"
500 "%-*s TYPE VALUE\n"),
501 elf_strptr (ebl->elf, shstrndx, destshdr->sh_name),
502 elfclass == ELFCLASS32 ? 8 : 16, gettext ("OFFSET"));
503
504 /* Get the data of the section. */
505 Elf_Data *data = elf_getdata (scn, NULL);
506 if (data == NULL)
507 continue;
508
509 /* Get the symbol table information. */
510 Elf_Scn *symscn = elf_getscn (ebl->elf, shdr->sh_link);
511 GElf_Shdr symshdr_mem;
512 GElf_Shdr *symshdr = gelf_getshdr (symscn, &symshdr_mem);
513 Elf_Data *symdata = elf_getdata (symscn, NULL);
514 if (unlikely (symshdr == NULL || symdata == NULL))
515 continue;
516
517 /* Search for the optional extended section index table. */
518 Elf_Data *xndxdata = NULL;
519 Elf_Scn *xndxscn = NULL;
520 while ((xndxscn = elf_nextscn (ebl->elf, xndxscn)) != NULL)
521 {
522 GElf_Shdr xndxshdr_mem;
523 GElf_Shdr *xndxshdr;
524
525 xndxshdr = gelf_getshdr (xndxscn, &xndxshdr_mem);
526 if (xndxshdr != NULL && xndxshdr->sh_type == SHT_SYMTAB_SHNDX
527 && xndxshdr->sh_link == elf_ndxscn (symscn))
528 {
529 /* Found it. */
530 xndxdata = elf_getdata (xndxscn, NULL);
531 break;
532 }
533 }
534
535 if (shdr->sh_type == SHT_REL)
536 show_relocs_rel (ebl, shdr, data, symdata, xndxdata,
537 symshdr->sh_link, shstrndx);
538 else
539 show_relocs_rela (ebl, shdr, data, symdata, xndxdata,
540 symshdr->sh_link, shstrndx);
541
542 putchar ('\n');
543 }
544 }
545
546 return 0;
547}
548
549
550static int
551show_full_content (Ebl *ebl, const char *fname, uint32_t shstrndx)
552{
553 Elf_Scn *scn = NULL;
554 while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
555 {
556 GElf_Shdr shdr_mem;
557 GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
558
559 if (shdr == NULL)
560 INTERNAL_ERROR (fname);
561
562 if (shdr->sh_type == SHT_PROGBITS && shdr->sh_size > 0)
563 {
564 if (! section_match (ebl->elf, elf_ndxscn (scn), shdr, shstrndx))
565 continue;
566
567 printf (gettext ("Contents of section %s:\n"),
568 elf_strptr (ebl->elf, shstrndx, shdr->sh_name));
569
570 /* Get the data of the section. */
571 Elf_Data *data = elf_getdata (scn, NULL);
572 if (data == NULL)
573 continue;
574
575 unsigned char *cp = data->d_buf;
576 size_t cnt;
577 for (cnt = 0; cnt + 16 < data->d_size; cp += 16, cnt += 16)
578 {
579 printf (" %04zx ", cnt);
580
581 for (size_t inner = 0; inner < 16; inner += 4)
582 printf ("%02hhx%02hhx%02hhx%02hhx ",
583 cp[inner], cp[inner + 1], cp[inner + 2],
584 cp[inner + 3]);
585 fputc_unlocked (' ', stdout);
586
587 for (size_t inner = 0; inner < 16; ++inner)
588 fputc_unlocked (isascii (cp[inner]) && isprint (cp[inner])
589 ? cp[inner] : '.', stdout);
590 fputc_unlocked ('\n', stdout);
591 }
592
593 printf (" %04zx ", cnt);
594
595 size_t remaining = data->d_size - cnt;
596 size_t inner;
597 for (inner = 0; inner + 4 <= remaining; inner += 4)
598 printf ("%02hhx%02hhx%02hhx%02hhx ",
599 cp[inner], cp[inner + 1], cp[inner + 2], cp[inner + 3]);
600
601 for (; inner < remaining; ++inner)
602 printf ("%02hhx", cp[inner]);
603
604 for (inner = 2 * (16 - inner) + (16 - inner + 3) / 4 + 1; inner > 0;
605 --inner)
606 fputc_unlocked (' ', stdout);
607
608 for (inner = 0; inner < remaining; ++inner)
609 fputc_unlocked (isascii (cp[inner]) && isprint (cp[inner])
610 ? cp[inner] : '.', stdout);
611 fputc_unlocked ('\n', stdout);
612
613 fputc_unlocked ('\n', stdout);
614 }
615 }
616
617 return 0;
618}
619
620
621struct disasm_info
622{
623 GElf_Addr addr;
624 const uint8_t *cur;
625 const uint8_t *last_end;
626 const char *address_color;
627 const char *bytes_color;
628};
629
630
631// XXX This is not the preferred output for all architectures. Needs
632// XXX customization, too.
633static int
634disasm_output (char *buf, size_t buflen, void *arg)
635{
636 struct disasm_info *info = (struct disasm_info *) arg;
637
638 if (info->address_color != NULL)
639 printf ("%s%8" PRIx64 "%s: ",
640 info->address_color, (uint64_t) info->addr, color_off);
641 else
642 printf ("%8" PRIx64 ": ", (uint64_t) info->addr);
643
644 if (info->bytes_color != NULL)
645 fputs_unlocked (info->bytes_color, stdout);
646 size_t cnt;
647 for (cnt = 0; cnt < (size_t) MIN (info->cur - info->last_end, 8); ++cnt)
648 printf (" %02" PRIx8, info->last_end[cnt]);
649 if (info->bytes_color != NULL)
650 fputs_unlocked (color_off, stdout);
651
652 printf ("%*s %.*s\n",
653 (int) (8 - cnt) * 3 + 1, "", (int) buflen, buf);
654
655 info->addr += cnt;
656
657 /* We limit the number of bytes printed before the mnemonic to 8.
658 Print the rest on a separate, following line. */
659 if (info->cur - info->last_end > 8)
660 {
661 if (info->address_color != NULL)
662 printf ("%s%8" PRIx64 "%s: ",
663 info->address_color, (uint64_t) info->addr, color_off);
664 else
665 printf ("%8" PRIx64 ": ", (uint64_t) info->addr);
666
667 if (info->bytes_color != NULL)
668 fputs_unlocked (info->bytes_color, stdout);
669 for (; cnt < (size_t) (info->cur - info->last_end); ++cnt)
670 printf (" %02" PRIx8, info->last_end[cnt]);
671 if (info->bytes_color != NULL)
672 fputs_unlocked (color_off, stdout);
673 putchar_unlocked ('\n');
674 info->addr += info->cur - info->last_end - 8;
675 }
676
677 info->last_end = info->cur;
678
679 return 0;
680}
681
682
683static int
684show_disasm (Ebl *ebl, const char *fname, uint32_t shstrndx)
685{
686 DisasmCtx_t *ctx = disasm_begin (ebl, ebl->elf, NULL /* XXX TODO */);
687 if (ctx == NULL)
688 error (EXIT_FAILURE, 0, gettext ("cannot disassemble"));
689
690 Elf_Scn *scn = NULL;
691 while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
692 {
693 GElf_Shdr shdr_mem;
694 GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
695
696 if (shdr == NULL)
697 INTERNAL_ERROR (fname);
698
699 if (shdr->sh_type == SHT_PROGBITS && shdr->sh_size > 0
700 && (shdr->sh_flags & SHF_EXECINSTR) != 0)
701 {
702 if (! section_match (ebl->elf, elf_ndxscn (scn), shdr, shstrndx))
703 continue;
704
705 Elf_Data *data = elf_getdata (scn, NULL);
706 if (data == NULL)
707 continue;
708
709 printf ("Disassembly of section %s:\n\n",
710 elf_strptr (ebl->elf, shstrndx, shdr->sh_name));
711
712 struct disasm_info info;
713 info.addr = shdr->sh_addr;
714 info.last_end = info.cur = data->d_buf;
715 char *fmt;
716 if (color_mode)
717 {
718 info.address_color = color_address;
719 info.bytes_color = color_bytes;
720
721 if (asprintf (&fmt, "%s%%7m %s%%.1o,%s%%.2o,%s%%.3o%%34a %s%%l",
722 color_mnemonic ?: "",
723 color_operand1 ?: "",
724 color_operand2 ?: "",
725 color_operand3 ?: "",
726 color_label ?: "") < 0)
727 error (EXIT_FAILURE, errno, _("cannot allocate memory"));
728 }
729 else
730 {
731 info.address_color = info.bytes_color = NULL;
732
733 fmt = "%7m %.1o,%.2o,%.3o%34a %l";
734 }
735
736 disasm_cb (ctx, &info.cur, info.cur + data->d_size, info.addr,
737 fmt, disasm_output, &info, NULL /* XXX */);
738
739 if (color_mode)
740 free (fmt);
741 }
742 }
743
744 (void) disasm_end (ctx);
745
746 return 0;
747}
748
749
750static int
751handle_elf (Elf *elf, const char *prefix, const char *fname,
752 const char *suffix)
753{
754
755 /* Get the backend for this object file type. */
756 Ebl *ebl = ebl_openbackend (elf);
757
758 printf ("%s: elf%d-%s\n\n",
759 fname, gelf_getclass (elf) == ELFCLASS32 ? 32 : 64,
760 ebl_backend_name (ebl));
761
762 /* Create the full name of the file. */
763 size_t prefix_len = prefix == NULL ? 0 : strlen (prefix);
764 size_t suffix_len = suffix == NULL ? 0 : strlen (suffix);
765 size_t fname_len = strlen (fname) + 1;
766 char fullname[prefix_len + 1 + fname_len + suffix_len];
767 char *cp = fullname;
768 if (prefix != NULL)
769 cp = mempcpy (cp, prefix, prefix_len);
770 cp = mempcpy (cp, fname, fname_len);
771 if (suffix != NULL)
772 memcpy (cp - 1, suffix, suffix_len + 1);
773
774 /* Get the section header string table index. */
775 size_t shstrndx;
776 if (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0)
777 error (EXIT_FAILURE, 0,
778 gettext ("cannot get section header string table index"));
779
780 int result = 0;
781 if (print_disasm)
782 result = show_disasm (ebl, fullname, shstrndx);
783 if (print_relocs && !print_disasm)
784 result = show_relocs (ebl, fullname, shstrndx);
785 if (print_full_content)
786 result = show_full_content (ebl, fullname, shstrndx);
787
788 /* Close the ELF backend library descriptor. */
789 ebl_closebackend (ebl);
790
791 return result;
792}
793
794
795#include "debugpred.h"