1 /* Print information from ELF file in human-readable form.
2 Copyright (C) 1999-2014 Red Hat, Inc.
3 This file is part of elfutils.
4 Written by Ulrich Drepper <drepper@redhat.com>, 1999.
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.
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.
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/>. */
43 #include <sys/param.h>
48 #include "../libelf/libelfP.h"
49 #include "../libelf/common.h"
50 #include "../libebl/libeblP.h"
51 #include "../libdw/libdwP.h"
52 #include "../libdwfl/libdwflP.h"
53 #include "../libdw/memory-access.h"
55 #include "../libdw/known-dwarf.h"
58 /* Name and version of program. */
59 static void print_version (FILE *stream, struct argp_state *state);
60 ARGP_PROGRAM_VERSION_HOOK_DEF = print_version;
62 /* Bug report address. */
63 ARGP_PROGRAM_BUG_ADDRESS_DEF = PACKAGE_BUGREPORT;
65 /* argp key value for --elf-section, non-ascii. */
66 #define ELF_INPUT_SECTION 256
68 /* Definitions of arguments for argp functions. */
69 static const struct argp_option options[] =
71 { NULL, 0, NULL, 0, N_("ELF input selection:"), 0 },
72 { "elf-section", ELF_INPUT_SECTION, "SECTION", OPTION_ARG_OPTIONAL,
73 N_("Use the named SECTION (default .gnu_debugdata) as (compressed) ELF "
75 { NULL, 0, NULL, 0, N_("ELF output selection:"), 0 },
76 { "all", 'a', NULL, 0,
77 N_("All these plus -p .strtab -p .dynstr -p .comment"), 0 },
78 { "dynamic", 'd', NULL, 0, N_("Display the dynamic segment"), 0 },
79 { "file-header", 'h', NULL, 0, N_("Display the ELF file header"), 0 },
80 { "histogram", 'I', NULL, 0,
81 N_("Display histogram of bucket list lengths"), 0 },
82 { "program-headers", 'l', NULL, 0, N_("Display the program headers"), 0 },
83 { "segments", 'l', NULL, OPTION_ALIAS | OPTION_HIDDEN, NULL, 0 },
84 { "relocs", 'r', NULL, 0, N_("Display relocations"), 0 },
85 { "section-headers", 'S', NULL, 0, N_("Display the sections' headers"), 0 },
86 { "sections", 'S', NULL, OPTION_ALIAS | OPTION_HIDDEN, NULL, 0 },
87 { "symbols", 's', NULL, 0, N_("Display the symbol table"), 0 },
88 { "version-info", 'V', NULL, 0, N_("Display versioning information"), 0 },
89 { "notes", 'n', NULL, 0, N_("Display the ELF notes"), 0 },
90 { "arch-specific", 'A', NULL, 0,
91 N_("Display architecture specific information, if any"), 0 },
92 { "exception", 'e', NULL, 0,
93 N_("Display sections for exception handling"), 0 },
95 { NULL, 0, NULL, 0, N_("Additional output selection:"), 0 },
96 { "debug-dump", 'w', "SECTION", OPTION_ARG_OPTIONAL,
97 N_("Display DWARF section content. SECTION can be one of abbrev, "
98 "aranges, decodedaranges, frame, gdb_index, info, loc, line, "
99 "decodedline, ranges, pubnames, str, macinfo, macro or exception"), 0 },
100 { "hex-dump", 'x', "SECTION", 0,
101 N_("Dump the uninterpreted contents of SECTION, by number or name"), 0 },
102 { "strings", 'p', "SECTION", OPTION_ARG_OPTIONAL,
103 N_("Print string contents of sections"), 0 },
104 { "string-dump", 'p', NULL, OPTION_ALIAS | OPTION_HIDDEN, NULL, 0 },
105 { "archive-index", 'c', NULL, 0,
106 N_("Display the symbol index of an archive"), 0 },
108 { NULL, 0, NULL, 0, N_("Output control:"), 0 },
109 { "numeric-addresses", 'N', NULL, 0,
110 N_("Do not find symbol names for addresses in DWARF data"), 0 },
111 { "unresolved-address-offsets", 'U', NULL, 0,
112 N_("Display just offsets instead of resolving values to addresses in DWARF data"), 0 },
113 { "wide", 'W', NULL, 0,
114 N_("Ignored for compatibility (lines always wide)"), 0 },
115 { NULL, 0, NULL, 0, NULL, 0 }
118 /* Short description of program. */
119 static const char doc[] = N_("\
120 Print information from ELF file in human-readable form.");
122 /* Strings for arguments in help texts. */
123 static const char args_doc[] = N_("FILE...");
125 /* Prototype for option handler. */
126 static error_t parse_opt (int key, char *arg, struct argp_state *state);
128 /* Data structure to communicate with argp functions. */
129 static struct argp argp =
131 options, parse_opt, args_doc, doc, NULL, NULL, NULL
134 /* If non-null, the section from which we should read to (compressed) ELF. */
135 static const char *elf_input_section = NULL;
137 /* Flags set by the option controlling the output. */
139 /* True if dynamic segment should be printed. */
140 static bool print_dynamic_table;
142 /* True if the file header should be printed. */
143 static bool print_file_header;
145 /* True if the program headers should be printed. */
146 static bool print_program_header;
148 /* True if relocations should be printed. */
149 static bool print_relocations;
151 /* True if the section headers should be printed. */
152 static bool print_section_header;
154 /* True if the symbol table should be printed. */
155 static bool print_symbol_table;
157 /* True if the version information should be printed. */
158 static bool print_version_info;
160 /* True if section groups should be printed. */
161 static bool print_section_groups;
163 /* True if bucket list length histogram should be printed. */
164 static bool print_histogram;
166 /* True if the architecture specific data should be printed. */
167 static bool print_arch;
169 /* True if note section content should be printed. */
170 static bool print_notes;
172 /* True if SHF_STRINGS section content should be printed. */
173 static bool print_string_sections;
175 /* True if archive index should be printed. */
176 static bool print_archive_index;
178 /* True if any of the control options except print_archive_index is set. */
179 static bool any_control_option;
181 /* True if we should print addresses from DWARF in symbolic form. */
182 static bool print_address_names = true;
184 /* True if we should print raw values instead of relativized addresses. */
185 static bool print_unresolved_addresses = false;
187 /* True if we should print the .debug_aranges section using libdw. */
188 static bool decodedaranges = false;
190 /* True if we should print the .debug_aranges section using libdw. */
191 static bool decodedline = false;
193 /* Select printing of debugging sections. */
194 static enum section_e
196 section_abbrev = 1, /* .debug_abbrev */
197 section_aranges = 2, /* .debug_aranges */
198 section_frame = 4, /* .debug_frame or .eh_frame & al. */
199 section_info = 8, /* .debug_info, .debug_types */
200 section_types = section_info,
201 section_line = 16, /* .debug_line */
202 section_loc = 32, /* .debug_loc */
203 section_pubnames = 64, /* .debug_pubnames */
204 section_str = 128, /* .debug_str */
205 section_macinfo = 256, /* .debug_macinfo */
206 section_ranges = 512, /* .debug_ranges */
207 section_exception = 1024, /* .eh_frame & al. */
208 section_gdb_index = 2048, /* .gdb_index */
209 section_macro = 4096, /* .debug_macro */
210 section_all = (section_abbrev | section_aranges | section_frame
211 | section_info | section_line | section_loc
212 | section_pubnames | section_str | section_macinfo
213 | section_ranges | section_exception | section_gdb_index
215 } print_debug_sections, implicit_debug_sections;
217 /* Select hex dumping of sections. */
218 static struct section_argument *dump_data_sections;
219 static struct section_argument **dump_data_sections_tail = &dump_data_sections;
221 /* Select string dumping of sections. */
222 static struct section_argument *string_sections;
223 static struct section_argument **string_sections_tail = &string_sections;
225 struct section_argument
227 struct section_argument *next;
232 /* Numbers of sections and program headers in the file. */
237 /* Declarations of local functions. */
238 static void process_file (int fd, const char *fname, bool only_one);
239 static void process_elf_file (Dwfl_Module *dwflmod, int fd);
240 static void print_ehdr (Ebl *ebl, GElf_Ehdr *ehdr);
241 static void print_shdr (Ebl *ebl, GElf_Ehdr *ehdr);
242 static void print_phdr (Ebl *ebl, GElf_Ehdr *ehdr);
243 static void print_scngrp (Ebl *ebl);
244 static void print_dynamic (Ebl *ebl);
245 static void print_relocs (Ebl *ebl, GElf_Ehdr *ehdr);
246 static void handle_relocs_rel (Ebl *ebl, GElf_Ehdr *ehdr, Elf_Scn *scn,
248 static void handle_relocs_rela (Ebl *ebl, GElf_Ehdr *ehdr, Elf_Scn *scn,
250 static void print_symtab (Ebl *ebl, int type);
251 static void handle_symtab (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr);
252 static void print_verinfo (Ebl *ebl);
253 static void handle_verneed (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr);
254 static void handle_verdef (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr);
255 static void handle_versym (Ebl *ebl, Elf_Scn *scn,
257 static void print_debug (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr);
258 static void handle_hash (Ebl *ebl);
259 static void handle_notes (Ebl *ebl, GElf_Ehdr *ehdr);
260 static void print_liblist (Ebl *ebl);
261 static void print_attributes (Ebl *ebl, const GElf_Ehdr *ehdr);
262 static void dump_data (Ebl *ebl);
263 static void dump_strings (Ebl *ebl);
264 static void print_strings (Ebl *ebl);
265 static void dump_archive_index (Elf *, const char *);
269 main (int argc, char *argv[])
272 setlocale (LC_ALL, "");
274 /* Initialize the message catalog. */
275 textdomain (PACKAGE_TARNAME);
277 /* Parse and process arguments. */
279 argp_parse (&argp, argc, argv, 0, &remaining, NULL);
281 /* Before we start tell the ELF library which version we are using. */
282 elf_version (EV_CURRENT);
284 /* Now process all the files given at the command line. */
285 bool only_one = remaining + 1 == argc;
289 int fd = open (argv[remaining], O_RDONLY);
292 error (0, errno, gettext ("cannot open input file"));
296 process_file (fd, argv[remaining], only_one);
300 while (++remaining < argc);
302 return error_message_count != 0;
306 /* Handle program arguments. */
308 parse_opt (int key, char *arg,
309 struct argp_state *state __attribute__ ((unused)))
311 void add_dump_section (const char *name, bool implicit)
313 struct section_argument *a = xmalloc (sizeof *a);
316 a->implicit = implicit;
317 struct section_argument ***tailp
318 = key == 'x' ? &dump_data_sections_tail : &string_sections_tail;
326 print_file_header = true;
327 print_program_header = true;
328 print_relocations = true;
329 print_section_header = true;
330 print_symbol_table = true;
331 print_version_info = true;
332 print_dynamic_table = true;
333 print_section_groups = true;
334 print_histogram = true;
337 implicit_debug_sections |= section_exception;
338 add_dump_section (".strtab", true);
339 add_dump_section (".dynstr", true);
340 add_dump_section (".comment", true);
341 any_control_option = true;
345 any_control_option = true;
348 print_dynamic_table = true;
349 any_control_option = true;
352 print_debug_sections |= section_exception;
353 any_control_option = true;
356 print_section_groups = true;
357 any_control_option = true;
360 print_file_header = true;
361 any_control_option = true;
364 print_histogram = true;
365 any_control_option = true;
368 print_program_header = true;
369 any_control_option = true;
373 any_control_option = true;
376 print_relocations = true;
377 any_control_option = true;
380 print_section_header = true;
381 any_control_option = true;
384 print_symbol_table = true;
385 any_control_option = true;
388 print_version_info = true;
389 any_control_option = true;
392 print_archive_index = true;
396 print_debug_sections = section_all;
397 else if (strcmp (arg, "abbrev") == 0)
398 print_debug_sections |= section_abbrev;
399 else if (strcmp (arg, "aranges") == 0)
400 print_debug_sections |= section_aranges;
401 else if (strcmp (arg, "decodedaranges") == 0)
403 print_debug_sections |= section_aranges;
404 decodedaranges = true;
406 else if (strcmp (arg, "ranges") == 0)
408 print_debug_sections |= section_ranges;
409 implicit_debug_sections |= section_info;
411 else if (strcmp (arg, "frame") == 0 || strcmp (arg, "frames") == 0)
412 print_debug_sections |= section_frame;
413 else if (strcmp (arg, "info") == 0)
414 print_debug_sections |= section_info;
415 else if (strcmp (arg, "loc") == 0)
417 print_debug_sections |= section_loc;
418 implicit_debug_sections |= section_info;
420 else if (strcmp (arg, "line") == 0)
421 print_debug_sections |= section_line;
422 else if (strcmp (arg, "decodedline") == 0)
424 print_debug_sections |= section_line;
427 else if (strcmp (arg, "pubnames") == 0)
428 print_debug_sections |= section_pubnames;
429 else if (strcmp (arg, "str") == 0)
430 print_debug_sections |= section_str;
431 else if (strcmp (arg, "macinfo") == 0)
432 print_debug_sections |= section_macinfo;
433 else if (strcmp (arg, "macro") == 0)
434 print_debug_sections |= section_macro;
435 else if (strcmp (arg, "exception") == 0)
436 print_debug_sections |= section_exception;
437 else if (strcmp (arg, "gdb_index") == 0)
438 print_debug_sections |= section_gdb_index;
441 fprintf (stderr, gettext ("Unknown DWARF debug section `%s'.\n"),
443 argp_help (&argp, stderr, ARGP_HELP_SEE,
444 program_invocation_short_name);
447 any_control_option = true;
450 any_control_option = true;
453 print_string_sections = true;
458 add_dump_section (arg, false);
459 any_control_option = true;
462 print_address_names = false;
465 print_unresolved_addresses = true;
467 case ARGP_KEY_NO_ARGS:
468 fputs (gettext ("Missing file name.\n"), stderr);
471 if (! any_control_option && ! print_archive_index)
473 fputs (gettext ("No operation specified.\n"), stderr);
475 argp_help (&argp, stderr, ARGP_HELP_SEE,
476 program_invocation_short_name);
480 case 'W': /* Ignored. */
482 case ELF_INPUT_SECTION:
484 elf_input_section = ".gnu_debugdata";
486 elf_input_section = arg;
489 return ARGP_ERR_UNKNOWN;
495 /* Print the version information. */
497 print_version (FILE *stream, struct argp_state *state __attribute__ ((unused)))
499 fprintf (stream, "readelf (%s) %s\n", PACKAGE_NAME, PACKAGE_VERSION);
500 fprintf (stream, gettext ("\
501 Copyright (C) %s Red Hat, Inc.\n\
502 This is free software; see the source for copying conditions. There is NO\n\
503 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\
505 fprintf (stream, gettext ("Written by %s.\n"), "Ulrich Drepper");
509 /* Create a file descriptor to read the data from the
510 elf_input_section given a file descriptor to an ELF file. */
512 open_input_section (int fd)
517 Elf *elf = elf_begin (fd, ELF_C_READ_MMAP, NULL);
520 error (0, 0, gettext ("cannot generate Elf descriptor: %s"),
525 if (elf_getshdrnum (elf, &shnums) < 0)
527 error (0, 0, gettext ("cannot determine number of sections: %s"),
534 if (elf_getshdrstrndx (elf, &shstrndx) < 0)
536 error (0, 0, gettext ("cannot get section header string table index"));
540 for (cnt = 0; cnt < shnums; ++cnt)
542 Elf_Scn *scn = elf_getscn (elf, cnt);
545 error (0, 0, gettext ("cannot get section: %s"),
551 GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
552 if (unlikely (shdr == NULL))
554 error (0, 0, gettext ("cannot get section header: %s"),
559 const char *sname = elf_strptr (elf, shstrndx, shdr->sh_name);
562 error (0, 0, gettext ("cannot get section name"));
566 if (strcmp (sname, elf_input_section) == 0)
568 Elf_Data *data = elf_rawdata (scn, NULL);
571 error (0, 0, gettext ("cannot get %s content: %s"),
572 sname, elf_errmsg (-1));
576 /* Create (and immediately unlink) a temporary file to store
577 section data in to create a file descriptor for it. */
578 const char *tmpdir = getenv ("TMPDIR") ?: P_tmpdir;
579 static const char suffix[] = "/readelfXXXXXX";
580 int tmplen = strlen (tmpdir) + sizeof (suffix);
581 char *tempname = alloca (tmplen);
582 sprintf (tempname, "%s%s", tmpdir, suffix);
584 int sfd = mkstemp (tempname);
587 error (0, 0, gettext ("cannot create temp file '%s'"),
593 ssize_t size = data->d_size;
594 if (write_retry (sfd, data->d_buf, size) != size)
596 error (0, 0, gettext ("cannot write section data"));
600 if (elf_end (elf) != 0)
602 error (0, 0, gettext ("error while closing Elf descriptor: %s"),
607 if (lseek (sfd, 0, SEEK_SET) == -1)
609 error (0, 0, gettext ("error while rewinding file descriptor"));
617 /* Named section not found. */
618 if (elf_end (elf) != 0)
619 error (0, 0, gettext ("error while closing Elf descriptor: %s"),
624 /* Check if the file is an archive, and if so dump its index. */
626 check_archive_index (int fd, const char *fname, bool only_one)
628 /* Create an `Elf' descriptor. */
629 Elf *elf = elf_begin (fd, ELF_C_READ_MMAP, NULL);
631 error (0, 0, gettext ("cannot generate Elf descriptor: %s"),
635 if (elf_kind (elf) == ELF_K_AR)
638 printf ("\n%s:\n\n", fname);
639 dump_archive_index (elf, fname);
643 gettext ("'%s' is not an archive, cannot print archive index"),
646 /* Now we can close the descriptor. */
647 if (elf_end (elf) != 0)
648 error (0, 0, gettext ("error while closing Elf descriptor: %s"),
653 /* Trivial callback used for checking if we opened an archive. */
655 count_dwflmod (Dwfl_Module *dwflmod __attribute__ ((unused)),
656 void **userdata __attribute__ ((unused)),
657 const char *name __attribute__ ((unused)),
658 Dwarf_Addr base __attribute__ ((unused)),
662 return DWARF_CB_ABORT;
663 *(bool *) arg = true;
667 struct process_dwflmod_args
674 process_dwflmod (Dwfl_Module *dwflmod,
675 void **userdata __attribute__ ((unused)),
676 const char *name __attribute__ ((unused)),
677 Dwarf_Addr base __attribute__ ((unused)),
680 const struct process_dwflmod_args *a = arg;
682 /* Print the file name. */
686 dwfl_module_info (dwflmod, NULL, NULL, NULL, NULL, NULL, &fname, NULL);
688 printf ("\n%s:\n\n", fname);
691 process_elf_file (dwflmod, a->fd);
696 /* Stub libdwfl callback, only the ELF handle already open is ever used.
697 Only used for finding the alternate debug file if the Dwarf comes from
698 the main file. We are not interested in separate debuginfo. */
700 find_no_debuginfo (Dwfl_Module *mod,
704 const char *file_name,
705 const char *debuglink_file,
706 GElf_Word debuglink_crc,
707 char **debuginfo_file_name)
710 dwfl_module_info (mod, NULL, NULL, NULL, &dwbias, NULL, NULL, NULL);
712 /* We are only interested if the Dwarf has been setup on the main
713 elf file but is only missing the alternate debug link. If dwbias
714 hasn't even been setup, this is searching for separate debuginfo
715 for the main elf. We don't care in that case. */
716 if (dwbias == (Dwarf_Addr) -1)
719 return dwfl_standard_find_debuginfo (mod, userdata, modname, base,
720 file_name, debuglink_file,
721 debuglink_crc, debuginfo_file_name);
724 /* Process one input file. */
726 process_file (int fd, const char *fname, bool only_one)
728 if (print_archive_index)
729 check_archive_index (fd, fname, only_one);
731 if (!any_control_option)
734 if (elf_input_section != NULL)
736 /* Replace fname and fd with section content. */
737 char *fnname = alloca (strlen (fname) + strlen (elf_input_section) + 2);
738 sprintf (fnname, "%s:%s", fname, elf_input_section);
739 fd = open_input_section (fd);
742 error (0, 0, gettext ("No such section '%s' in '%s'"),
743 elf_input_section, fname);
749 /* Duplicate an fd for dwfl_report_offline to swallow. */
750 int dwfl_fd = dup (fd);
751 if (unlikely (dwfl_fd < 0))
752 error (EXIT_FAILURE, errno, "dup");
754 /* Use libdwfl in a trivial way to open the libdw handle for us.
755 This takes care of applying relocations to DWARF data in ET_REL files. */
756 static const Dwfl_Callbacks callbacks =
758 .section_address = dwfl_offline_section_address,
759 .find_debuginfo = find_no_debuginfo
761 Dwfl *dwfl = dwfl_begin (&callbacks);
762 if (likely (dwfl != NULL))
763 /* Let 0 be the logical address of the file (or first in archive). */
764 dwfl->offline_next_address = 0;
765 if (dwfl_report_offline (dwfl, fname, fname, dwfl_fd) == NULL)
768 if (fstat64 (dwfl_fd, &st) != 0)
769 error (0, errno, gettext ("cannot stat input file"));
770 else if (unlikely (st.st_size == 0))
771 error (0, 0, gettext ("input file is empty"));
773 error (0, 0, gettext ("failed reading '%s': %s"),
774 fname, dwfl_errmsg (-1));
775 close (dwfl_fd); /* Consumed on success, not on failure. */
779 dwfl_report_end (dwfl, NULL, NULL);
783 /* Clear ONLY_ONE if we have multiple modules, from an archive. */
785 only_one = dwfl_getmodules (dwfl, &count_dwflmod, &seen, 0) == 0;
788 /* Process the one or more modules gleaned from this file. */
789 struct process_dwflmod_args a = { .fd = fd, .only_one = only_one };
790 dwfl_getmodules (dwfl, &process_dwflmod, &a, 0);
794 /* Need to close the replaced fd if we created it. Caller takes
796 if (elf_input_section != NULL)
801 /* Process one ELF file. */
803 process_elf_file (Dwfl_Module *dwflmod, int fd)
806 Elf *elf = dwfl_module_getelf (dwflmod, &dwflbias);
809 GElf_Ehdr *ehdr = gelf_getehdr (elf, &ehdr_mem);
814 error (0, 0, gettext ("cannot read ELF header: %s"), elf_errmsg (-1));
818 Ebl *ebl = ebl_openbackend (elf);
819 if (unlikely (ebl == NULL))
822 error (0, errno, gettext ("cannot create EBL handle"));
826 /* Determine the number of sections. */
827 if (unlikely (elf_getshdrnum (ebl->elf, &shnum) < 0))
828 error (EXIT_FAILURE, 0,
829 gettext ("cannot determine number of sections: %s"),
832 /* Determine the number of phdrs. */
833 if (unlikely (elf_getphdrnum (ebl->elf, &phnum) < 0))
834 error (EXIT_FAILURE, 0,
835 gettext ("cannot determine number of program headers: %s"),
838 /* For an ET_REL file, libdwfl has adjusted the in-core shdrs
839 and may have applied relocation to some sections.
840 So we need to get a fresh Elf handle on the file to display those. */
841 bool print_unrelocated = (print_section_header
843 || dump_data_sections != NULL
846 Elf *pure_elf = NULL;
848 if (ehdr->e_type == ET_REL && print_unrelocated)
850 /* Read the file afresh. */
851 off64_t aroff = elf_getaroff (elf);
852 pure_elf = elf_begin (fd, ELF_C_READ_MMAP, NULL);
855 /* Archive member. */
856 (void) elf_rand (pure_elf, aroff);
857 Elf *armem = elf_begin (-1, ELF_C_READ_MMAP, pure_elf);
861 if (pure_elf == NULL)
863 pure_ebl = ebl_openbackend (pure_elf);
864 if (pure_ebl == NULL)
868 if (print_file_header)
869 print_ehdr (ebl, ehdr);
870 if (print_section_header)
871 print_shdr (pure_ebl, ehdr);
872 if (print_program_header)
873 print_phdr (ebl, ehdr);
874 if (print_section_groups)
876 if (print_dynamic_table)
878 if (print_relocations)
879 print_relocs (pure_ebl, ehdr);
882 if (print_symbol_table)
883 print_symtab (ebl, SHT_DYNSYM);
884 if (print_version_info)
886 if (print_symbol_table)
887 print_symtab (ebl, SHT_SYMTAB);
891 print_attributes (ebl, ehdr);
892 if (dump_data_sections != NULL)
893 dump_data (pure_ebl);
894 if (string_sections != NULL)
896 if ((print_debug_sections | implicit_debug_sections) != 0)
897 print_debug (dwflmod, ebl, ehdr);
899 handle_notes (pure_ebl, ehdr);
900 if (print_string_sections)
903 ebl_closebackend (ebl);
907 ebl_closebackend (pure_ebl);
913 /* Print file type. */
915 print_file_type (unsigned short int e_type)
917 if (likely (e_type <= ET_CORE))
919 static const char *const knowntypes[] =
922 N_("REL (Relocatable file)"),
923 N_("EXEC (Executable file)"),
924 N_("DYN (Shared object file)"),
925 N_("CORE (Core file)")
927 puts (gettext (knowntypes[e_type]));
929 else if (e_type >= ET_LOOS && e_type <= ET_HIOS)
930 printf (gettext ("OS Specific: (%x)\n"), e_type);
931 else if (e_type >= ET_LOPROC /* && e_type <= ET_HIPROC always true */)
932 printf (gettext ("Processor Specific: (%x)\n"), e_type);
938 /* Print ELF header. */
940 print_ehdr (Ebl *ebl, GElf_Ehdr *ehdr)
942 fputs_unlocked (gettext ("ELF Header:\n Magic: "), stdout);
943 for (size_t cnt = 0; cnt < EI_NIDENT; ++cnt)
944 printf (" %02hhx", ehdr->e_ident[cnt]);
946 printf (gettext ("\n Class: %s\n"),
947 ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? "ELF32"
948 : ehdr->e_ident[EI_CLASS] == ELFCLASS64 ? "ELF64"
951 printf (gettext (" Data: %s\n"),
952 ehdr->e_ident[EI_DATA] == ELFDATA2LSB
953 ? "2's complement, little endian"
954 : ehdr->e_ident[EI_DATA] == ELFDATA2MSB
955 ? "2's complement, big endian" : "\?\?\?");
957 printf (gettext (" Ident Version: %hhd %s\n"),
958 ehdr->e_ident[EI_VERSION],
959 ehdr->e_ident[EI_VERSION] == EV_CURRENT ? gettext ("(current)")
963 printf (gettext (" OS/ABI: %s\n"),
964 ebl_osabi_name (ebl, ehdr->e_ident[EI_OSABI], buf, sizeof (buf)));
966 printf (gettext (" ABI Version: %hhd\n"),
967 ehdr->e_ident[EI_ABIVERSION]);
969 fputs_unlocked (gettext (" Type: "), stdout);
970 print_file_type (ehdr->e_type);
972 printf (gettext (" Machine: %s\n"), ebl->name);
974 printf (gettext (" Version: %d %s\n"),
976 ehdr->e_version == EV_CURRENT ? gettext ("(current)") : "(\?\?\?)");
978 printf (gettext (" Entry point address: %#" PRIx64 "\n"),
981 printf (gettext (" Start of program headers: %" PRId64 " %s\n"),
982 ehdr->e_phoff, gettext ("(bytes into file)"));
984 printf (gettext (" Start of section headers: %" PRId64 " %s\n"),
985 ehdr->e_shoff, gettext ("(bytes into file)"));
987 printf (gettext (" Flags: %s\n"),
988 ebl_machine_flag_name (ebl, ehdr->e_flags, buf, sizeof (buf)));
990 printf (gettext (" Size of this header: %" PRId16 " %s\n"),
991 ehdr->e_ehsize, gettext ("(bytes)"));
993 printf (gettext (" Size of program header entries: %" PRId16 " %s\n"),
994 ehdr->e_phentsize, gettext ("(bytes)"));
996 printf (gettext (" Number of program headers entries: %" PRId16),
998 if (ehdr->e_phnum == PN_XNUM)
1001 GElf_Shdr *shdr = gelf_getshdr (elf_getscn (ebl->elf, 0), &shdr_mem);
1003 printf (gettext (" (%" PRIu32 " in [0].sh_info)"),
1004 (uint32_t) shdr->sh_info);
1006 fputs_unlocked (gettext (" ([0] not available)"), stdout);
1008 fputc_unlocked ('\n', stdout);
1010 printf (gettext (" Size of section header entries: %" PRId16 " %s\n"),
1011 ehdr->e_shentsize, gettext ("(bytes)"));
1013 printf (gettext (" Number of section headers entries: %" PRId16),
1015 if (ehdr->e_shnum == 0)
1018 GElf_Shdr *shdr = gelf_getshdr (elf_getscn (ebl->elf, 0), &shdr_mem);
1020 printf (gettext (" (%" PRIu32 " in [0].sh_size)"),
1021 (uint32_t) shdr->sh_size);
1023 fputs_unlocked (gettext (" ([0] not available)"), stdout);
1025 fputc_unlocked ('\n', stdout);
1027 if (unlikely (ehdr->e_shstrndx == SHN_XINDEX))
1030 GElf_Shdr *shdr = gelf_getshdr (elf_getscn (ebl->elf, 0), &shdr_mem);
1032 /* We managed to get the zeroth section. */
1033 snprintf (buf, sizeof (buf), gettext (" (%" PRIu32 " in [0].sh_link)"),
1034 (uint32_t) shdr->sh_link);
1037 strncpy (buf, gettext (" ([0] not available)"), sizeof (buf));
1038 buf[sizeof (buf) - 1] = '\0';
1041 printf (gettext (" Section header string table index: XINDEX%s\n\n"),
1045 printf (gettext (" Section header string table index: %" PRId16 "\n\n"),
1051 get_visibility_type (int value)
1069 /* Print the section headers. */
1071 print_shdr (Ebl *ebl, GElf_Ehdr *ehdr)
1076 if (! print_file_header)
1078 There are %d section headers, starting at offset %#" PRIx64 ":\n\
1080 ehdr->e_shnum, ehdr->e_shoff);
1082 /* Get the section header string table index. */
1083 if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0))
1084 error (EXIT_FAILURE, 0,
1085 gettext ("cannot get section header string table index"));
1087 puts (gettext ("Section Headers:"));
1089 if (ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1090 puts (gettext ("[Nr] Name Type Addr Off Size ES Flags Lk Inf Al"));
1092 puts (gettext ("[Nr] Name Type Addr Off Size ES Flags Lk Inf Al"));
1094 for (cnt = 0; cnt < shnum; ++cnt)
1096 Elf_Scn *scn = elf_getscn (ebl->elf, cnt);
1098 if (unlikely (scn == NULL))
1099 error (EXIT_FAILURE, 0, gettext ("cannot get section: %s"),
1102 /* Get the section header. */
1104 GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
1105 if (unlikely (shdr == NULL))
1106 error (EXIT_FAILURE, 0, gettext ("cannot get section header: %s"),
1111 if (shdr->sh_flags & SHF_WRITE)
1113 if (shdr->sh_flags & SHF_ALLOC)
1115 if (shdr->sh_flags & SHF_EXECINSTR)
1117 if (shdr->sh_flags & SHF_MERGE)
1119 if (shdr->sh_flags & SHF_STRINGS)
1121 if (shdr->sh_flags & SHF_INFO_LINK)
1123 if (shdr->sh_flags & SHF_LINK_ORDER)
1125 if (shdr->sh_flags & SHF_OS_NONCONFORMING)
1127 if (shdr->sh_flags & SHF_GROUP)
1129 if (shdr->sh_flags & SHF_TLS)
1131 if (shdr->sh_flags & SHF_ORDERED)
1133 if (shdr->sh_flags & SHF_EXCLUDE)
1138 printf ("[%2zu] %-20s %-12s %0*" PRIx64 " %0*" PRIx64 " %0*" PRIx64
1139 " %2" PRId64 " %-5s %2" PRId32 " %3" PRId32
1142 elf_strptr (ebl->elf, shstrndx, shdr->sh_name)
1144 ebl_section_type_name (ebl, shdr->sh_type, buf, sizeof (buf)),
1145 ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 8 : 16, shdr->sh_addr,
1146 ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 6 : 8, shdr->sh_offset,
1147 ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 6 : 8, shdr->sh_size,
1148 shdr->sh_entsize, flagbuf, shdr->sh_link, shdr->sh_info,
1149 shdr->sh_addralign);
1152 fputc_unlocked ('\n', stdout);
1156 /* Print the program header. */
1158 print_phdr (Ebl *ebl, GElf_Ehdr *ehdr)
1161 /* No program header, this is OK in relocatable objects. */
1164 puts (gettext ("Program Headers:"));
1165 if (ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1167 Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align"));
1170 Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align"));
1172 /* Process all program headers. */
1173 bool has_relro = false;
1174 GElf_Addr relro_from = 0;
1175 GElf_Addr relro_to = 0;
1176 for (size_t cnt = 0; cnt < phnum; ++cnt)
1180 GElf_Phdr *phdr = gelf_getphdr (ebl->elf, cnt, &mem);
1182 /* If for some reason the header cannot be returned show this. */
1183 if (unlikely (phdr == NULL))
1189 printf (" %-14s 0x%06" PRIx64 " 0x%0*" PRIx64 " 0x%0*" PRIx64
1190 " 0x%06" PRIx64 " 0x%06" PRIx64 " %c%c%c 0x%" PRIx64 "\n",
1191 ebl_segment_type_name (ebl, phdr->p_type, buf, sizeof (buf)),
1193 ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 8 : 16, phdr->p_vaddr,
1194 ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 8 : 16, phdr->p_paddr,
1197 phdr->p_flags & PF_R ? 'R' : ' ',
1198 phdr->p_flags & PF_W ? 'W' : ' ',
1199 phdr->p_flags & PF_X ? 'E' : ' ',
1202 if (phdr->p_type == PT_INTERP)
1204 /* If we are sure the file offset is valid then we can show
1205 the user the name of the interpreter. We check whether
1206 there is a section at the file offset. Normally there
1207 would be a section called ".interp". But in separate
1208 .debug files it is a NOBITS section (and so doesn't match
1209 with gelf_offscn). Which probably means the offset is
1210 not valid another reason could be because the ELF file
1211 just doesn't contain any section headers, in that case
1212 just play it safe and don't display anything. */
1214 Elf_Scn *scn = gelf_offscn (ebl->elf, phdr->p_offset);
1216 GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
1219 char *filedata = elf_rawfile (ebl->elf, &maxsize);
1221 if (shdr != NULL && shdr->sh_type == SHT_PROGBITS
1222 && filedata != NULL && phdr->p_offset < maxsize
1223 && phdr->p_filesz <= maxsize - phdr->p_offset
1224 && memchr (filedata + phdr->p_offset, '\0',
1225 phdr->p_filesz) != NULL)
1226 printf (gettext ("\t[Requesting program interpreter: %s]\n"),
1227 filedata + phdr->p_offset);
1229 else if (phdr->p_type == PT_GNU_RELRO)
1232 relro_from = phdr->p_vaddr;
1233 relro_to = relro_from + phdr->p_memsz;
1237 if (ehdr->e_shnum == 0)
1238 /* No sections in the file. Punt. */
1241 /* Get the section header string table index. */
1243 if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0))
1244 error (EXIT_FAILURE, 0,
1245 gettext ("cannot get section header string table index"));
1247 puts (gettext ("\n Section to Segment mapping:\n Segment Sections..."));
1249 for (size_t cnt = 0; cnt < phnum; ++cnt)
1251 /* Print the segment number. */
1252 printf (" %2.2zu ", cnt);
1255 GElf_Phdr *phdr = gelf_getphdr (ebl->elf, cnt, &phdr_mem);
1256 /* This must not happen. */
1257 if (unlikely (phdr == NULL))
1258 error (EXIT_FAILURE, 0, gettext ("cannot get program header: %s"),
1261 /* Iterate over the sections. */
1262 bool in_relro = false;
1264 for (size_t inner = 1; inner < shnum; ++inner)
1266 Elf_Scn *scn = elf_getscn (ebl->elf, inner);
1267 /* This should not happen. */
1268 if (unlikely (scn == NULL))
1269 error (EXIT_FAILURE, 0, gettext ("cannot get section: %s"),
1272 /* Get the section header. */
1274 GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
1275 if (unlikely (shdr == NULL))
1276 error (EXIT_FAILURE, 0,
1277 gettext ("cannot get section header: %s"),
1280 if (shdr->sh_size > 0
1281 /* Compare allocated sections by VMA, unallocated
1282 sections by file offset. */
1283 && (shdr->sh_flags & SHF_ALLOC
1284 ? (shdr->sh_addr >= phdr->p_vaddr
1285 && (shdr->sh_addr + shdr->sh_size
1286 <= phdr->p_vaddr + phdr->p_memsz))
1287 : (shdr->sh_offset >= phdr->p_offset
1288 && (shdr->sh_offset + shdr->sh_size
1289 <= phdr->p_offset + phdr->p_filesz))))
1291 if (has_relro && !in_relro
1292 && shdr->sh_addr >= relro_from
1293 && shdr->sh_addr + shdr->sh_size <= relro_to)
1295 fputs_unlocked (" [RELRO:", stdout);
1298 else if (has_relro && in_relro && shdr->sh_addr >= relro_to)
1300 fputs_unlocked ("]", stdout);
1303 else if (has_relro && in_relro
1304 && shdr->sh_addr + shdr->sh_size > relro_to)
1305 fputs_unlocked ("] <RELRO:", stdout);
1306 else if (phdr->p_type == PT_LOAD && (phdr->p_flags & PF_W) == 0)
1310 fputs_unlocked (" [RO:", stdout);
1316 /* Determine the segment this section is part of. */
1318 GElf_Phdr *phdr2 = NULL;
1319 for (cnt2 = 0; cnt2 < phnum; ++cnt2)
1321 GElf_Phdr phdr2_mem;
1322 phdr2 = gelf_getphdr (ebl->elf, cnt2, &phdr2_mem);
1324 if (phdr2 != NULL && phdr2->p_type == PT_LOAD
1325 && shdr->sh_addr >= phdr2->p_vaddr
1326 && (shdr->sh_addr + shdr->sh_size
1327 <= phdr2->p_vaddr + phdr2->p_memsz))
1333 if ((phdr2->p_flags & PF_W) == 0 && !in_ro)
1335 fputs_unlocked (" [RO:", stdout);
1338 else if ((phdr2->p_flags & PF_W) != 0 && in_ro)
1340 fputs_unlocked ("]", stdout);
1347 elf_strptr (ebl->elf, shstrndx, shdr->sh_name));
1349 /* Signal that this sectin is only partially covered. */
1350 if (has_relro && in_relro
1351 && shdr->sh_addr + shdr->sh_size > relro_to)
1353 fputs_unlocked (">", stdout);
1358 if (in_relro || in_ro)
1359 fputs_unlocked ("]", stdout);
1361 /* Finish the line. */
1362 fputc_unlocked ('\n', stdout);
1368 section_name (Ebl *ebl, GElf_Ehdr *ehdr, GElf_Shdr *shdr)
1370 return elf_strptr (ebl->elf, ehdr->e_shstrndx, shdr->sh_name) ?: "???";
1375 handle_scngrp (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr)
1377 /* Get the data of the section. */
1378 Elf_Data *data = elf_getdata (scn, NULL);
1380 Elf_Scn *symscn = elf_getscn (ebl->elf, shdr->sh_link);
1381 GElf_Shdr symshdr_mem;
1382 GElf_Shdr *symshdr = gelf_getshdr (symscn, &symshdr_mem);
1383 Elf_Data *symdata = elf_getdata (symscn, NULL);
1385 if (data == NULL || data->d_size < sizeof (Elf32_Word) || symshdr == NULL
1389 /* Get the section header string table index. */
1391 if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0))
1392 error (EXIT_FAILURE, 0,
1393 gettext ("cannot get section header string table index"));
1395 Elf32_Word *grpref = (Elf32_Word *) data->d_buf;
1398 GElf_Sym *sym = gelf_getsym (symdata, shdr->sh_info, &sym_mem);
1400 printf ((grpref[0] & GRP_COMDAT)
1402 \nCOMDAT section group [%2zu] '%s' with signature '%s' contains %zu entry:\n",
1404 \nCOMDAT section group [%2zu] '%s' with signature '%s' contains %zu entries:\n",
1405 data->d_size / sizeof (Elf32_Word) - 1)
1407 \nSection group [%2zu] '%s' with signature '%s' contains %zu entry:\n", "\
1408 \nSection group [%2zu] '%s' with signature '%s' contains %zu entries:\n",
1409 data->d_size / sizeof (Elf32_Word) - 1),
1411 elf_strptr (ebl->elf, shstrndx, shdr->sh_name),
1413 : elf_strptr (ebl->elf, symshdr->sh_link, sym->st_name))
1414 ?: gettext ("<INVALID SYMBOL>"),
1415 data->d_size / sizeof (Elf32_Word) - 1);
1417 for (size_t cnt = 1; cnt < data->d_size / sizeof (Elf32_Word); ++cnt)
1419 GElf_Shdr grpshdr_mem;
1420 GElf_Shdr *grpshdr = gelf_getshdr (elf_getscn (ebl->elf, grpref[cnt]),
1424 printf (" [%2u] %s\n",
1427 && (str = elf_strptr (ebl->elf, shstrndx, grpshdr->sh_name))
1428 ? str : gettext ("<INVALID SECTION>"));
1434 print_scngrp (Ebl *ebl)
1436 /* Find all relocation sections and handle them. */
1437 Elf_Scn *scn = NULL;
1439 while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
1441 /* Handle the section if it is a symbol table. */
1443 GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
1445 if (shdr != NULL && shdr->sh_type == SHT_GROUP)
1446 handle_scngrp (ebl, scn, shdr);
1451 static const struct flags
1457 { DF_ORIGIN, "ORIGIN" },
1458 { DF_SYMBOLIC, "SYMBOLIC" },
1459 { DF_TEXTREL, "TEXTREL" },
1460 { DF_BIND_NOW, "BIND_NOW" },
1461 { DF_STATIC_TLS, "STATIC_TLS" }
1463 static const int ndt_flags = sizeof (dt_flags) / sizeof (dt_flags[0]);
1465 static const struct flags dt_flags_1[] =
1467 { DF_1_NOW, "NOW" },
1468 { DF_1_GLOBAL, "GLOBAL" },
1469 { DF_1_GROUP, "GROUP" },
1470 { DF_1_NODELETE, "NODELETE" },
1471 { DF_1_LOADFLTR, "LOADFLTR" },
1472 { DF_1_INITFIRST, "INITFIRST" },
1473 { DF_1_NOOPEN, "NOOPEN" },
1474 { DF_1_ORIGIN, "ORIGIN" },
1475 { DF_1_DIRECT, "DIRECT" },
1476 { DF_1_TRANS, "TRANS" },
1477 { DF_1_INTERPOSE, "INTERPOSE" },
1478 { DF_1_NODEFLIB, "NODEFLIB" },
1479 { DF_1_NODUMP, "NODUMP" },
1480 { DF_1_CONFALT, "CONFALT" },
1481 { DF_1_ENDFILTEE, "ENDFILTEE" },
1482 { DF_1_DISPRELDNE, "DISPRELDNE" },
1483 { DF_1_DISPRELPND, "DISPRELPND" },
1485 static const int ndt_flags_1 = sizeof (dt_flags_1) / sizeof (dt_flags_1[0]);
1487 static const struct flags dt_feature_1[] =
1489 { DTF_1_PARINIT, "PARINIT" },
1490 { DTF_1_CONFEXP, "CONFEXP" }
1492 static const int ndt_feature_1 = (sizeof (dt_feature_1)
1493 / sizeof (dt_feature_1[0]));
1495 static const struct flags dt_posflag_1[] =
1497 { DF_P1_LAZYLOAD, "LAZYLOAD" },
1498 { DF_P1_GROUPPERM, "GROUPPERM" }
1500 static const int ndt_posflag_1 = (sizeof (dt_posflag_1)
1501 / sizeof (dt_posflag_1[0]));
1505 print_flags (int class, GElf_Xword d_val, const struct flags *flags,
1511 for (cnt = 0; cnt < nflags; ++cnt)
1512 if (d_val & flags[cnt].mask)
1515 putchar_unlocked (' ');
1516 fputs_unlocked (flags[cnt].str, stdout);
1517 d_val &= ~flags[cnt].mask;
1524 putchar_unlocked (' ');
1525 printf ("%#0*" PRIx64, class == ELFCLASS32 ? 10 : 18, d_val);
1528 putchar_unlocked ('\n');
1533 print_dt_flags (int class, GElf_Xword d_val)
1535 print_flags (class, d_val, dt_flags, ndt_flags);
1540 print_dt_flags_1 (int class, GElf_Xword d_val)
1542 print_flags (class, d_val, dt_flags_1, ndt_flags_1);
1547 print_dt_feature_1 (int class, GElf_Xword d_val)
1549 print_flags (class, d_val, dt_feature_1, ndt_feature_1);
1554 print_dt_posflag_1 (int class, GElf_Xword d_val)
1556 print_flags (class, d_val, dt_posflag_1, ndt_posflag_1);
1561 handle_dynamic (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr)
1563 int class = gelf_getclass (ebl->elf);
1564 GElf_Shdr glink_mem;
1571 /* Get the data of the section. */
1572 data = elf_getdata (scn, NULL);
1576 /* Get the section header string table index. */
1577 if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0))
1578 error (EXIT_FAILURE, 0,
1579 gettext ("cannot get section header string table index"));
1581 sh_entsize = gelf_fsize (ebl->elf, ELF_T_DYN, 1, EV_CURRENT);
1583 glink = gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link), &glink_mem);
1585 error (EXIT_FAILURE, 0, gettext ("invalid sh_link value in section %Zu"),
1588 printf (ngettext ("\
1589 \nDynamic segment contains %lu entry:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'\n",
1591 \nDynamic segment contains %lu entries:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'\n",
1592 shdr->sh_size / sh_entsize),
1593 (unsigned long int) (shdr->sh_size / sh_entsize),
1594 class == ELFCLASS32 ? 10 : 18, shdr->sh_addr,
1596 (int) shdr->sh_link,
1597 elf_strptr (ebl->elf, shstrndx, glink->sh_name));
1598 fputs_unlocked (gettext (" Type Value\n"), stdout);
1600 for (cnt = 0; cnt < shdr->sh_size / sh_entsize; ++cnt)
1603 GElf_Dyn *dyn = gelf_getdyn (data, cnt, &dynmem);
1609 ebl_dynamic_tag_name (ebl, dyn->d_tag, buf, sizeof (buf)));
1617 /* No further output. */
1618 fputc_unlocked ('\n', stdout);
1622 printf (gettext ("Shared library: [%s]\n"),
1623 elf_strptr (ebl->elf, shdr->sh_link, dyn->d_un.d_val));
1627 printf (gettext ("Library soname: [%s]\n"),
1628 elf_strptr (ebl->elf, shdr->sh_link, dyn->d_un.d_val));
1632 printf (gettext ("Library rpath: [%s]\n"),
1633 elf_strptr (ebl->elf, shdr->sh_link, dyn->d_un.d_val));
1637 printf (gettext ("Library runpath: [%s]\n"),
1638 elf_strptr (ebl->elf, shdr->sh_link, dyn->d_un.d_val));
1651 case DT_INIT_ARRAYSZ:
1652 case DT_FINI_ARRAYSZ:
1655 case DT_GNU_CONFLICTSZ:
1656 case DT_GNU_LIBLISTSZ:
1657 printf (gettext ("%" PRId64 " (bytes)\n"), dyn->d_un.d_val);
1664 printf ("%" PRId64 "\n", dyn->d_un.d_val);
1668 const char *tagname = ebl_dynamic_tag_name (ebl, dyn->d_un.d_val,
1670 puts (tagname ?: "???");
1674 print_dt_flags (class, dyn->d_un.d_val);
1678 print_dt_flags_1 (class, dyn->d_un.d_val);
1682 print_dt_feature_1 (class, dyn->d_un.d_val);
1686 print_dt_posflag_1 (class, dyn->d_un.d_val);
1690 printf ("%#0*" PRIx64 "\n",
1691 class == ELFCLASS32 ? 10 : 18, dyn->d_un.d_val);
1698 /* Print the dynamic segment. */
1700 print_dynamic (Ebl *ebl)
1702 for (size_t i = 0; i < phnum; ++i)
1705 GElf_Phdr *phdr = gelf_getphdr (ebl->elf, i, &phdr_mem);
1707 if (phdr != NULL && phdr->p_type == PT_DYNAMIC)
1709 Elf_Scn *scn = gelf_offscn (ebl->elf, phdr->p_offset);
1711 GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
1712 if (shdr != NULL && shdr->sh_type == SHT_DYNAMIC)
1713 handle_dynamic (ebl, scn, shdr);
1720 /* Print relocations. */
1722 print_relocs (Ebl *ebl, GElf_Ehdr *ehdr)
1724 /* Find all relocation sections and handle them. */
1725 Elf_Scn *scn = NULL;
1727 while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
1729 /* Handle the section if it is a symbol table. */
1731 GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
1733 if (likely (shdr != NULL))
1735 if (shdr->sh_type == SHT_REL)
1736 handle_relocs_rel (ebl, ehdr, scn, shdr);
1737 else if (shdr->sh_type == SHT_RELA)
1738 handle_relocs_rela (ebl, ehdr, scn, shdr);
1744 /* Handle a relocation section. */
1746 handle_relocs_rel (Ebl *ebl, GElf_Ehdr *ehdr, Elf_Scn *scn, GElf_Shdr *shdr)
1748 int class = gelf_getclass (ebl->elf);
1749 size_t sh_entsize = gelf_fsize (ebl->elf, ELF_T_REL, 1, EV_CURRENT);
1750 int nentries = shdr->sh_size / sh_entsize;
1752 /* Get the data of the section. */
1753 Elf_Data *data = elf_getdata (scn, NULL);
1757 /* Get the symbol table information. */
1758 Elf_Scn *symscn = elf_getscn (ebl->elf, shdr->sh_link);
1759 GElf_Shdr symshdr_mem;
1760 GElf_Shdr *symshdr = gelf_getshdr (symscn, &symshdr_mem);
1761 Elf_Data *symdata = elf_getdata (symscn, NULL);
1763 /* Get the section header of the section the relocations are for. */
1764 GElf_Shdr destshdr_mem;
1765 GElf_Shdr *destshdr = gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_info),
1768 if (unlikely (symshdr == NULL || symdata == NULL || destshdr == NULL))
1770 printf (gettext ("\nInvalid symbol table at offset %#0" PRIx64 "\n"),
1775 /* Search for the optional extended section index table. */
1776 Elf_Data *xndxdata = NULL;
1777 int xndxscnidx = elf_scnshndx (scn);
1778 if (unlikely (xndxscnidx > 0))
1779 xndxdata = elf_getdata (elf_getscn (ebl->elf, xndxscnidx), NULL);
1781 /* Get the section header string table index. */
1783 if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0))
1784 error (EXIT_FAILURE, 0,
1785 gettext ("cannot get section header string table index"));
1787 if (shdr->sh_info != 0)
1788 printf (ngettext ("\
1789 \nRelocation section [%2zu] '%s' for section [%2u] '%s' at offset %#0" PRIx64 " contains %d entry:\n",
1791 \nRelocation section [%2zu] '%s' for section [%2u] '%s' at offset %#0" PRIx64 " contains %d entries:\n",
1794 elf_strptr (ebl->elf, shstrndx, shdr->sh_name),
1795 (unsigned int) shdr->sh_info,
1796 elf_strptr (ebl->elf, shstrndx, destshdr->sh_name),
1800 /* The .rel.dyn section does not refer to a specific section but
1801 instead of section index zero. Do not try to print a section
1803 printf (ngettext ("\
1804 \nRelocation section [%2u] '%s' at offset %#0" PRIx64 " contains %d entry:\n",
1806 \nRelocation section [%2u] '%s' at offset %#0" PRIx64 " contains %d entries:\n",
1808 (unsigned int) elf_ndxscn (scn),
1809 elf_strptr (ebl->elf, shstrndx, shdr->sh_name),
1812 fputs_unlocked (class == ELFCLASS32
1814 Offset Type Value Name\n")
1816 Offset Type Value Name\n"),
1819 int is_statically_linked = 0;
1820 for (int cnt = 0; cnt < nentries; ++cnt)
1823 GElf_Rel *rel = gelf_getrel (data, cnt, &relmem);
1824 if (likely (rel != NULL))
1829 GElf_Sym *sym = gelf_getsymshndx (symdata, xndxdata,
1830 GELF_R_SYM (rel->r_info),
1832 if (unlikely (sym == NULL))
1834 /* As a special case we have to handle relocations in static
1835 executables. This only happens for IRELATIVE relocations
1836 (so far). There is no symbol table. */
1837 if (is_statically_linked == 0)
1839 /* Find the program header and look for a PT_INTERP entry. */
1840 is_statically_linked = -1;
1841 if (ehdr->e_type == ET_EXEC)
1843 is_statically_linked = 1;
1845 for (size_t inner = 0; inner < phnum; ++inner)
1848 GElf_Phdr *phdr = gelf_getphdr (ebl->elf, inner,
1850 if (phdr != NULL && phdr->p_type == PT_INTERP)
1852 is_statically_linked = -1;
1859 if (is_statically_linked > 0 && shdr->sh_link == 0)
1861 %#0*" PRIx64 " %-20s %*s %s\n",
1862 class == ELFCLASS32 ? 10 : 18, rel->r_offset,
1863 ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info))
1864 /* Avoid the leading R_ which isn't carrying any
1866 ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info),
1867 buf, sizeof (buf)) + 2
1868 : gettext ("<INVALID RELOC>"),
1869 class == ELFCLASS32 ? 10 : 18, "",
1870 elf_strptr (ebl->elf, shstrndx, destshdr->sh_name));
1872 printf (" %#0*" PRIx64 " %-20s <%s %ld>\n",
1873 class == ELFCLASS32 ? 10 : 18, rel->r_offset,
1874 ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info))
1875 /* Avoid the leading R_ which isn't carrying any
1877 ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info),
1878 buf, sizeof (buf)) + 2
1879 : gettext ("<INVALID RELOC>"),
1880 gettext ("INVALID SYMBOL"),
1881 (long int) GELF_R_SYM (rel->r_info));
1883 else if (GELF_ST_TYPE (sym->st_info) != STT_SECTION)
1884 printf (" %#0*" PRIx64 " %-20s %#0*" PRIx64 " %s\n",
1885 class == ELFCLASS32 ? 10 : 18, rel->r_offset,
1886 likely (ebl_reloc_type_check (ebl,
1887 GELF_R_TYPE (rel->r_info)))
1888 /* Avoid the leading R_ which isn't carrying any
1890 ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info),
1891 buf, sizeof (buf)) + 2
1892 : gettext ("<INVALID RELOC>"),
1893 class == ELFCLASS32 ? 10 : 18, sym->st_value,
1894 elf_strptr (ebl->elf, symshdr->sh_link, sym->st_name));
1897 /* This is a relocation against a STT_SECTION symbol. */
1898 GElf_Shdr secshdr_mem;
1900 secshdr = gelf_getshdr (elf_getscn (ebl->elf,
1901 sym->st_shndx == SHN_XINDEX
1902 ? xndx : sym->st_shndx),
1905 if (unlikely (secshdr == NULL))
1906 printf (" %#0*" PRIx64 " %-20s <%s %ld>\n",
1907 class == ELFCLASS32 ? 10 : 18, rel->r_offset,
1908 ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info))
1909 /* Avoid the leading R_ which isn't carrying any
1911 ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info),
1912 buf, sizeof (buf)) + 2
1913 : gettext ("<INVALID RELOC>"),
1914 gettext ("INVALID SECTION"),
1915 (long int) (sym->st_shndx == SHN_XINDEX
1916 ? xndx : sym->st_shndx));
1918 printf (" %#0*" PRIx64 " %-20s %#0*" PRIx64 " %s\n",
1919 class == ELFCLASS32 ? 10 : 18, rel->r_offset,
1920 ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info))
1921 /* Avoid the leading R_ which isn't carrying any
1923 ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info),
1924 buf, sizeof (buf)) + 2
1925 : gettext ("<INVALID RELOC>"),
1926 class == ELFCLASS32 ? 10 : 18, sym->st_value,
1927 elf_strptr (ebl->elf, shstrndx, secshdr->sh_name));
1934 /* Handle a relocation section. */
1936 handle_relocs_rela (Ebl *ebl, GElf_Ehdr *ehdr, Elf_Scn *scn, GElf_Shdr *shdr)
1938 int class = gelf_getclass (ebl->elf);
1939 size_t sh_entsize = gelf_fsize (ebl->elf, ELF_T_RELA, 1, EV_CURRENT);
1940 int nentries = shdr->sh_size / sh_entsize;
1942 /* Get the data of the section. */
1943 Elf_Data *data = elf_getdata (scn, NULL);
1947 /* Get the symbol table information. */
1948 Elf_Scn *symscn = elf_getscn (ebl->elf, shdr->sh_link);
1949 GElf_Shdr symshdr_mem;
1950 GElf_Shdr *symshdr = gelf_getshdr (symscn, &symshdr_mem);
1951 Elf_Data *symdata = elf_getdata (symscn, NULL);
1953 /* Get the section header of the section the relocations are for. */
1954 GElf_Shdr destshdr_mem;
1955 GElf_Shdr *destshdr = gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_info),
1958 if (unlikely (symshdr == NULL || symdata == NULL || destshdr == NULL))
1960 printf (gettext ("\nInvalid symbol table at offset %#0" PRIx64 "\n"),
1965 /* Search for the optional extended section index table. */
1966 Elf_Data *xndxdata = NULL;
1967 int xndxscnidx = elf_scnshndx (scn);
1968 if (unlikely (xndxscnidx > 0))
1969 xndxdata = elf_getdata (elf_getscn (ebl->elf, xndxscnidx), NULL);
1971 /* Get the section header string table index. */
1973 if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0))
1974 error (EXIT_FAILURE, 0,
1975 gettext ("cannot get section header string table index"));
1977 if (shdr->sh_info != 0)
1978 printf (ngettext ("\
1979 \nRelocation section [%2zu] '%s' for section [%2u] '%s' at offset %#0" PRIx64 " contains %d entry:\n",
1981 \nRelocation section [%2zu] '%s' for section [%2u] '%s' at offset %#0" PRIx64 " contains %d entries:\n",
1984 elf_strptr (ebl->elf, shstrndx, shdr->sh_name),
1985 (unsigned int) shdr->sh_info,
1986 elf_strptr (ebl->elf, shstrndx, destshdr->sh_name),
1990 /* The .rela.dyn section does not refer to a specific section but
1991 instead of section index zero. Do not try to print a section
1993 printf (ngettext ("\
1994 \nRelocation section [%2u] '%s' at offset %#0" PRIx64 " contains %d entry:\n",
1996 \nRelocation section [%2u] '%s' at offset %#0" PRIx64 " contains %d entries:\n",
1998 (unsigned int) elf_ndxscn (scn),
1999 elf_strptr (ebl->elf, shstrndx, shdr->sh_name),
2002 fputs_unlocked (class == ELFCLASS32
2004 Offset Type Value Addend Name\n")
2006 Offset Type Value Addend Name\n"),
2009 int is_statically_linked = 0;
2010 for (int cnt = 0; cnt < nentries; ++cnt)
2013 GElf_Rela *rel = gelf_getrela (data, cnt, &relmem);
2014 if (likely (rel != NULL))
2019 GElf_Sym *sym = gelf_getsymshndx (symdata, xndxdata,
2020 GELF_R_SYM (rel->r_info),
2023 if (unlikely (sym == NULL))
2025 /* As a special case we have to handle relocations in static
2026 executables. This only happens for IRELATIVE relocations
2027 (so far). There is no symbol table. */
2028 if (is_statically_linked == 0)
2030 /* Find the program header and look for a PT_INTERP entry. */
2031 is_statically_linked = -1;
2032 if (ehdr->e_type == ET_EXEC)
2034 is_statically_linked = 1;
2036 for (size_t inner = 0; inner < phnum; ++inner)
2039 GElf_Phdr *phdr = gelf_getphdr (ebl->elf, inner,
2041 if (phdr != NULL && phdr->p_type == PT_INTERP)
2043 is_statically_linked = -1;
2050 if (is_statically_linked > 0 && shdr->sh_link == 0)
2052 %#0*" PRIx64 " %-15s %*s %#6" PRIx64 " %s\n",
2053 class == ELFCLASS32 ? 10 : 18, rel->r_offset,
2054 ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info))
2055 /* Avoid the leading R_ which isn't carrying any
2057 ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info),
2058 buf, sizeof (buf)) + 2
2059 : gettext ("<INVALID RELOC>"),
2060 class == ELFCLASS32 ? 10 : 18, "",
2062 elf_strptr (ebl->elf, shstrndx, destshdr->sh_name));
2064 printf (" %#0*" PRIx64 " %-15s <%s %ld>\n",
2065 class == ELFCLASS32 ? 10 : 18, rel->r_offset,
2066 ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info))
2067 /* Avoid the leading R_ which isn't carrying any
2069 ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info),
2070 buf, sizeof (buf)) + 2
2071 : gettext ("<INVALID RELOC>"),
2072 gettext ("INVALID SYMBOL"),
2073 (long int) GELF_R_SYM (rel->r_info));
2075 else if (GELF_ST_TYPE (sym->st_info) != STT_SECTION)
2077 %#0*" PRIx64 " %-15s %#0*" PRIx64 " %+6" PRId64 " %s\n",
2078 class == ELFCLASS32 ? 10 : 18, rel->r_offset,
2079 likely (ebl_reloc_type_check (ebl,
2080 GELF_R_TYPE (rel->r_info)))
2081 /* Avoid the leading R_ which isn't carrying any
2083 ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info),
2084 buf, sizeof (buf)) + 2
2085 : gettext ("<INVALID RELOC>"),
2086 class == ELFCLASS32 ? 10 : 18, sym->st_value,
2088 elf_strptr (ebl->elf, symshdr->sh_link, sym->st_name));
2091 /* This is a relocation against a STT_SECTION symbol. */
2092 GElf_Shdr secshdr_mem;
2094 secshdr = gelf_getshdr (elf_getscn (ebl->elf,
2095 sym->st_shndx == SHN_XINDEX
2096 ? xndx : sym->st_shndx),
2099 if (unlikely (secshdr == NULL))
2100 printf (" %#0*" PRIx64 " %-15s <%s %ld>\n",
2101 class == ELFCLASS32 ? 10 : 18, rel->r_offset,
2102 ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info))
2103 /* Avoid the leading R_ which isn't carrying any
2105 ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info),
2106 buf, sizeof (buf)) + 2
2107 : gettext ("<INVALID RELOC>"),
2108 gettext ("INVALID SECTION"),
2109 (long int) (sym->st_shndx == SHN_XINDEX
2110 ? xndx : sym->st_shndx));
2113 %#0*" PRIx64 " %-15s %#0*" PRIx64 " %+6" PRId64 " %s\n",
2114 class == ELFCLASS32 ? 10 : 18, rel->r_offset,
2115 ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info))
2116 /* Avoid the leading R_ which isn't carrying any
2118 ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info),
2119 buf, sizeof (buf)) + 2
2120 : gettext ("<INVALID RELOC>"),
2121 class == ELFCLASS32 ? 10 : 18, sym->st_value,
2123 elf_strptr (ebl->elf, shstrndx, secshdr->sh_name));
2130 /* Print the program header. */
2132 print_symtab (Ebl *ebl, int type)
2134 /* Find the symbol table(s). For this we have to search through the
2136 Elf_Scn *scn = NULL;
2138 while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
2140 /* Handle the section if it is a symbol table. */
2142 GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
2144 if (shdr != NULL && shdr->sh_type == (GElf_Word) type)
2145 handle_symtab (ebl, scn, shdr);
2151 handle_symtab (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr)
2153 Elf_Data *versym_data = NULL;
2154 Elf_Data *verneed_data = NULL;
2155 Elf_Data *verdef_data = NULL;
2156 Elf_Data *xndx_data = NULL;
2157 int class = gelf_getclass (ebl->elf);
2158 Elf32_Word verneed_stridx = 0;
2159 Elf32_Word verdef_stridx = 0;
2161 /* Get the data of the section. */
2162 Elf_Data *data = elf_getdata (scn, NULL);
2166 /* Find out whether we have other sections we might need. */
2167 Elf_Scn *runscn = NULL;
2168 while ((runscn = elf_nextscn (ebl->elf, runscn)) != NULL)
2170 GElf_Shdr runshdr_mem;
2171 GElf_Shdr *runshdr = gelf_getshdr (runscn, &runshdr_mem);
2173 if (likely (runshdr != NULL))
2175 if (runshdr->sh_type == SHT_GNU_versym
2176 && runshdr->sh_link == elf_ndxscn (scn))
2177 /* Bingo, found the version information. Now get the data. */
2178 versym_data = elf_getdata (runscn, NULL);
2179 else if (runshdr->sh_type == SHT_GNU_verneed)
2181 /* This is the information about the needed versions. */
2182 verneed_data = elf_getdata (runscn, NULL);
2183 verneed_stridx = runshdr->sh_link;
2185 else if (runshdr->sh_type == SHT_GNU_verdef)
2187 /* This is the information about the defined versions. */
2188 verdef_data = elf_getdata (runscn, NULL);
2189 verdef_stridx = runshdr->sh_link;
2191 else if (runshdr->sh_type == SHT_SYMTAB_SHNDX
2192 && runshdr->sh_link == elf_ndxscn (scn))
2193 /* Extended section index. */
2194 xndx_data = elf_getdata (runscn, NULL);
2198 /* Get the section header string table index. */
2200 if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0))
2201 error (EXIT_FAILURE, 0,
2202 gettext ("cannot get section header string table index"));
2204 GElf_Shdr glink_mem;
2205 GElf_Shdr *glink = gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link),
2208 error (EXIT_FAILURE, 0, gettext ("invalid sh_link value in section %Zu"),
2211 /* Now we can compute the number of entries in the section. */
2212 unsigned int nsyms = data->d_size / (class == ELFCLASS32
2213 ? sizeof (Elf32_Sym)
2214 : sizeof (Elf64_Sym));
2216 printf (ngettext ("\nSymbol table [%2u] '%s' contains %u entry:\n",
2217 "\nSymbol table [%2u] '%s' contains %u entries:\n",
2219 (unsigned int) elf_ndxscn (scn),
2220 elf_strptr (ebl->elf, shstrndx, shdr->sh_name), nsyms);
2221 printf (ngettext (" %lu local symbol String table: [%2u] '%s'\n",
2222 " %lu local symbols String table: [%2u] '%s'\n",
2224 (unsigned long int) shdr->sh_info,
2225 (unsigned int) shdr->sh_link,
2226 elf_strptr (ebl->elf, shstrndx, glink->sh_name));
2228 fputs_unlocked (class == ELFCLASS32
2230 Num: Value Size Type Bind Vis Ndx Name\n")
2232 Num: Value Size Type Bind Vis Ndx Name\n"),
2235 for (unsigned int cnt = 0; cnt < nsyms; ++cnt)
2242 GElf_Sym *sym = gelf_getsymshndx (data, xndx_data, cnt, &sym_mem, &xndx);
2244 if (unlikely (sym == NULL))
2247 /* Determine the real section index. */
2248 if (likely (sym->st_shndx != SHN_XINDEX))
2249 xndx = sym->st_shndx;
2252 %5u: %0*" PRIx64 " %6" PRId64 " %-7s %-6s %-9s %6s %s"),
2254 class == ELFCLASS32 ? 8 : 16,
2257 ebl_symbol_type_name (ebl, GELF_ST_TYPE (sym->st_info),
2258 typebuf, sizeof (typebuf)),
2259 ebl_symbol_binding_name (ebl, GELF_ST_BIND (sym->st_info),
2260 bindbuf, sizeof (bindbuf)),
2261 get_visibility_type (GELF_ST_VISIBILITY (sym->st_other)),
2262 ebl_section_name (ebl, sym->st_shndx, xndx, scnbuf,
2263 sizeof (scnbuf), NULL, shnum),
2264 elf_strptr (ebl->elf, shdr->sh_link, sym->st_name));
2266 if (versym_data != NULL)
2268 /* Get the version information. */
2269 GElf_Versym versym_mem;
2270 GElf_Versym *versym = gelf_getversym (versym_data, cnt, &versym_mem);
2272 if (versym != NULL && ((*versym & 0x8000) != 0 || *versym > 1))
2274 bool is_nobits = false;
2275 bool check_def = xndx != SHN_UNDEF;
2277 if (xndx < SHN_LORESERVE || sym->st_shndx == SHN_XINDEX)
2279 GElf_Shdr symshdr_mem;
2280 GElf_Shdr *symshdr =
2281 gelf_getshdr (elf_getscn (ebl->elf, xndx), &symshdr_mem);
2283 is_nobits = (symshdr != NULL
2284 && symshdr->sh_type == SHT_NOBITS);
2287 if (is_nobits || ! check_def)
2289 /* We must test both. */
2290 GElf_Vernaux vernaux_mem;
2291 GElf_Vernaux *vernaux = NULL;
2292 size_t vn_offset = 0;
2294 GElf_Verneed verneed_mem;
2295 GElf_Verneed *verneed = gelf_getverneed (verneed_data, 0,
2297 while (verneed != NULL)
2299 size_t vna_offset = vn_offset;
2301 vernaux = gelf_getvernaux (verneed_data,
2302 vna_offset += verneed->vn_aux,
2304 while (vernaux != NULL
2305 && vernaux->vna_other != *versym
2306 && vernaux->vna_next != 0)
2308 /* Update the offset. */
2309 vna_offset += vernaux->vna_next;
2311 vernaux = (vernaux->vna_next == 0
2313 : gelf_getvernaux (verneed_data,
2318 /* Check whether we found the version. */
2319 if (vernaux != NULL && vernaux->vna_other == *versym)
2323 vn_offset += verneed->vn_next;
2324 verneed = (verneed->vn_next == 0
2326 : gelf_getverneed (verneed_data, vn_offset,
2330 if (vernaux != NULL && vernaux->vna_other == *versym)
2333 elf_strptr (ebl->elf, verneed_stridx,
2335 (unsigned int) vernaux->vna_other);
2338 else if (unlikely (! is_nobits))
2339 error (0, 0, gettext ("bad dynamic symbol"));
2344 if (check_def && *versym != 0x8001)
2346 /* We must test both. */
2347 size_t vd_offset = 0;
2349 GElf_Verdef verdef_mem;
2350 GElf_Verdef *verdef = gelf_getverdef (verdef_data, 0,
2352 while (verdef != NULL)
2354 if (verdef->vd_ndx == (*versym & 0x7fff))
2355 /* Found the definition. */
2358 vd_offset += verdef->vd_next;
2359 verdef = (verdef->vd_next == 0
2361 : gelf_getverdef (verdef_data, vd_offset,
2367 GElf_Verdaux verdaux_mem;
2368 GElf_Verdaux *verdaux
2369 = gelf_getverdaux (verdef_data,
2370 vd_offset + verdef->vd_aux,
2373 if (verdaux != NULL)
2374 printf ((*versym & 0x8000) ? "@%s" : "@@%s",
2375 elf_strptr (ebl->elf, verdef_stridx,
2376 verdaux->vda_name));
2382 putchar_unlocked ('\n');
2387 /* Print version information. */
2389 print_verinfo (Ebl *ebl)
2391 /* Find the version information sections. For this we have to
2392 search through the section table. */
2393 Elf_Scn *scn = NULL;
2395 while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
2397 /* Handle the section if it is part of the versioning handling. */
2399 GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
2401 if (likely (shdr != NULL))
2403 if (shdr->sh_type == SHT_GNU_verneed)
2404 handle_verneed (ebl, scn, shdr);
2405 else if (shdr->sh_type == SHT_GNU_verdef)
2406 handle_verdef (ebl, scn, shdr);
2407 else if (shdr->sh_type == SHT_GNU_versym)
2408 handle_versym (ebl, scn, shdr);
2415 get_ver_flags (unsigned int flags)
2417 static char buf[32];
2421 return gettext ("none");
2423 if (flags & VER_FLG_BASE)
2424 endp = stpcpy (buf, "BASE ");
2428 if (flags & VER_FLG_WEAK)
2431 endp = stpcpy (endp, "| ");
2433 endp = stpcpy (endp, "WEAK ");
2436 if (unlikely (flags & ~(VER_FLG_BASE | VER_FLG_WEAK)))
2438 strncpy (endp, gettext ("| <unknown>"), buf + sizeof (buf) - endp);
2439 buf[sizeof (buf) - 1] = '\0';
2447 handle_verneed (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr)
2449 int class = gelf_getclass (ebl->elf);
2451 /* Get the data of the section. */
2452 Elf_Data *data = elf_getdata (scn, NULL);
2456 /* Get the section header string table index. */
2458 if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0))
2459 error (EXIT_FAILURE, 0,
2460 gettext ("cannot get section header string table index"));
2462 GElf_Shdr glink_mem;
2463 GElf_Shdr *glink = gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link),
2466 error (EXIT_FAILURE, 0, gettext ("invalid sh_link value in section %Zu"),
2469 printf (ngettext ("\
2470 \nVersion needs section [%2u] '%s' contains %d entry:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'\n",
2472 \nVersion needs section [%2u] '%s' contains %d entries:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'\n",
2474 (unsigned int) elf_ndxscn (scn),
2475 elf_strptr (ebl->elf, shstrndx, shdr->sh_name), shdr->sh_info,
2476 class == ELFCLASS32 ? 10 : 18, shdr->sh_addr,
2478 (unsigned int) shdr->sh_link,
2479 elf_strptr (ebl->elf, shstrndx, glink->sh_name));
2481 unsigned int offset = 0;
2482 for (int cnt = shdr->sh_info; --cnt >= 0; )
2484 /* Get the data at the next offset. */
2485 GElf_Verneed needmem;
2486 GElf_Verneed *need = gelf_getverneed (data, offset, &needmem);
2487 if (unlikely (need == NULL))
2490 printf (gettext (" %#06x: Version: %hu File: %s Cnt: %hu\n"),
2491 offset, (unsigned short int) need->vn_version,
2492 elf_strptr (ebl->elf, shdr->sh_link, need->vn_file),
2493 (unsigned short int) need->vn_cnt);
2495 unsigned int auxoffset = offset + need->vn_aux;
2496 for (int cnt2 = need->vn_cnt; --cnt2 >= 0; )
2498 GElf_Vernaux auxmem;
2499 GElf_Vernaux *aux = gelf_getvernaux (data, auxoffset, &auxmem);
2500 if (unlikely (aux == NULL))
2503 printf (gettext (" %#06x: Name: %s Flags: %s Version: %hu\n"),
2505 elf_strptr (ebl->elf, shdr->sh_link, aux->vna_name),
2506 get_ver_flags (aux->vna_flags),
2507 (unsigned short int) aux->vna_other);
2509 if (aux->vna_next == 0)
2512 auxoffset += aux->vna_next;
2515 /* Find the next offset. */
2516 if (need->vn_next == 0)
2519 offset += need->vn_next;
2525 handle_verdef (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr)
2527 /* Get the data of the section. */
2528 Elf_Data *data = elf_getdata (scn, NULL);
2532 /* Get the section header string table index. */
2534 if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0))
2535 error (EXIT_FAILURE, 0,
2536 gettext ("cannot get section header string table index"));
2538 GElf_Shdr glink_mem;
2539 GElf_Shdr *glink = gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link),
2542 error (EXIT_FAILURE, 0, gettext ("invalid sh_link value in section %Zu"),
2545 int class = gelf_getclass (ebl->elf);
2546 printf (ngettext ("\
2547 \nVersion definition section [%2u] '%s' contains %d entry:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'\n",
2549 \nVersion definition section [%2u] '%s' contains %d entries:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'\n",
2551 (unsigned int) elf_ndxscn (scn),
2552 elf_strptr (ebl->elf, shstrndx, shdr->sh_name),
2554 class == ELFCLASS32 ? 10 : 18, shdr->sh_addr,
2556 (unsigned int) shdr->sh_link,
2557 elf_strptr (ebl->elf, shstrndx, glink->sh_name));
2559 unsigned int offset = 0;
2560 for (int cnt = shdr->sh_info; --cnt >= 0; )
2562 /* Get the data at the next offset. */
2564 GElf_Verdef *def = gelf_getverdef (data, offset, &defmem);
2565 if (unlikely (def == NULL))
2568 unsigned int auxoffset = offset + def->vd_aux;
2569 GElf_Verdaux auxmem;
2570 GElf_Verdaux *aux = gelf_getverdaux (data, auxoffset, &auxmem);
2571 if (unlikely (aux == NULL))
2575 %#06x: Version: %hd Flags: %s Index: %hd Cnt: %hd Name: %s\n"),
2576 offset, def->vd_version,
2577 get_ver_flags (def->vd_flags),
2580 elf_strptr (ebl->elf, shdr->sh_link, aux->vda_name));
2582 auxoffset += aux->vda_next;
2583 for (int cnt2 = 1; cnt2 < def->vd_cnt; ++cnt2)
2585 aux = gelf_getverdaux (data, auxoffset, &auxmem);
2586 if (unlikely (aux == NULL))
2589 printf (gettext (" %#06x: Parent %d: %s\n"),
2591 elf_strptr (ebl->elf, shdr->sh_link, aux->vda_name));
2593 if (aux->vda_next == 0)
2596 auxoffset += aux->vda_next;
2599 /* Find the next offset. */
2600 if (def->vd_next == 0)
2602 offset += def->vd_next;
2608 handle_versym (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr)
2610 int class = gelf_getclass (ebl->elf);
2611 const char **vername;
2612 const char **filename;
2614 /* Get the data of the section. */
2615 Elf_Data *data = elf_getdata (scn, NULL);
2619 /* Get the section header string table index. */
2621 if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0))
2622 error (EXIT_FAILURE, 0,
2623 gettext ("cannot get section header string table index"));
2625 /* We have to find the version definition section and extract the
2627 Elf_Scn *defscn = NULL;
2628 Elf_Scn *needscn = NULL;
2630 Elf_Scn *verscn = NULL;
2631 while ((verscn = elf_nextscn (ebl->elf, verscn)) != NULL)
2633 GElf_Shdr vershdr_mem;
2634 GElf_Shdr *vershdr = gelf_getshdr (verscn, &vershdr_mem);
2636 if (likely (vershdr != NULL))
2638 if (vershdr->sh_type == SHT_GNU_verdef)
2640 else if (vershdr->sh_type == SHT_GNU_verneed)
2646 if (defscn != NULL || needscn != NULL)
2648 /* We have a version information (better should have). Now get
2649 the version names. First find the maximum version number. */
2653 /* Run through the version definitions and find the highest
2655 unsigned int offset = 0;
2657 GElf_Shdr defshdrmem;
2660 defdata = elf_getdata (defscn, NULL);
2661 if (unlikely (defdata == NULL))
2664 defshdr = gelf_getshdr (defscn, &defshdrmem);
2665 if (unlikely (defshdr == NULL))
2668 for (unsigned int cnt = 0; cnt < defshdr->sh_info; ++cnt)
2673 /* Get the data at the next offset. */
2674 def = gelf_getverdef (defdata, offset, &defmem);
2675 if (unlikely (def == NULL))
2678 nvername = MAX (nvername, (size_t) (def->vd_ndx & 0x7fff));
2680 if (def->vd_next == 0)
2682 offset += def->vd_next;
2685 if (needscn != NULL)
2687 unsigned int offset = 0;
2689 GElf_Shdr needshdrmem;
2690 GElf_Shdr *needshdr;
2692 needdata = elf_getdata (needscn, NULL);
2693 if (unlikely (needdata == NULL))
2696 needshdr = gelf_getshdr (needscn, &needshdrmem);
2697 if (unlikely (needshdr == NULL))
2700 for (unsigned int cnt = 0; cnt < needshdr->sh_info; ++cnt)
2702 GElf_Verneed needmem;
2704 unsigned int auxoffset;
2707 /* Get the data at the next offset. */
2708 need = gelf_getverneed (needdata, offset, &needmem);
2709 if (unlikely (need == NULL))
2712 /* Run through the auxiliary entries. */
2713 auxoffset = offset + need->vn_aux;
2714 for (cnt2 = need->vn_cnt; --cnt2 >= 0; )
2716 GElf_Vernaux auxmem;
2719 aux = gelf_getvernaux (needdata, auxoffset, &auxmem);
2720 if (unlikely (aux == NULL))
2723 nvername = MAX (nvername,
2724 (size_t) (aux->vna_other & 0x7fff));
2726 if (aux->vna_next == 0)
2728 auxoffset += aux->vna_next;
2731 if (need->vn_next == 0)
2733 offset += need->vn_next;
2737 /* This is the number of versions we know about. */
2740 /* Allocate the array. */
2741 vername = (const char **) alloca (nvername * sizeof (const char *));
2742 memset(vername, 0, nvername * sizeof (const char *));
2743 filename = (const char **) alloca (nvername * sizeof (const char *));
2744 memset(filename, 0, nvername * sizeof (const char *));
2746 /* Run through the data structures again and collect the strings. */
2749 /* Run through the version definitions and find the highest
2751 unsigned int offset = 0;
2753 GElf_Shdr defshdrmem;
2756 defdata = elf_getdata (defscn, NULL);
2757 if (unlikely (defdata == NULL))
2760 defshdr = gelf_getshdr (defscn, &defshdrmem);
2761 if (unlikely (defshdr == NULL))
2764 for (unsigned int cnt = 0; cnt < defshdr->sh_info; ++cnt)
2767 /* Get the data at the next offset. */
2769 GElf_Verdef *def = gelf_getverdef (defdata, offset, &defmem);
2770 if (unlikely (def == NULL))
2773 GElf_Verdaux auxmem;
2774 GElf_Verdaux *aux = gelf_getverdaux (defdata,
2775 offset + def->vd_aux,
2777 if (unlikely (aux == NULL))
2780 vername[def->vd_ndx & 0x7fff]
2781 = elf_strptr (ebl->elf, defshdr->sh_link, aux->vda_name);
2782 filename[def->vd_ndx & 0x7fff] = NULL;
2784 if (def->vd_next == 0)
2786 offset += def->vd_next;
2789 if (needscn != NULL)
2791 unsigned int offset = 0;
2793 Elf_Data *needdata = elf_getdata (needscn, NULL);
2794 GElf_Shdr needshdrmem;
2795 GElf_Shdr *needshdr = gelf_getshdr (needscn, &needshdrmem);
2796 if (unlikely (needdata == NULL || needshdr == NULL))
2799 for (unsigned int cnt = 0; cnt < needshdr->sh_info; ++cnt)
2801 /* Get the data at the next offset. */
2802 GElf_Verneed needmem;
2803 GElf_Verneed *need = gelf_getverneed (needdata, offset,
2805 if (unlikely (need == NULL))
2808 /* Run through the auxiliary entries. */
2809 unsigned int auxoffset = offset + need->vn_aux;
2810 for (int cnt2 = need->vn_cnt; --cnt2 >= 0; )
2812 GElf_Vernaux auxmem;
2813 GElf_Vernaux *aux = gelf_getvernaux (needdata, auxoffset,
2815 if (unlikely (aux == NULL))
2818 vername[aux->vna_other & 0x7fff]
2819 = elf_strptr (ebl->elf, needshdr->sh_link, aux->vna_name);
2820 filename[aux->vna_other & 0x7fff]
2821 = elf_strptr (ebl->elf, needshdr->sh_link, need->vn_file);
2823 if (aux->vna_next == 0)
2825 auxoffset += aux->vna_next;
2828 if (need->vn_next == 0)
2830 offset += need->vn_next;
2841 GElf_Shdr glink_mem;
2842 GElf_Shdr *glink = gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link),
2844 size_t sh_entsize = gelf_fsize (ebl->elf, ELF_T_HALF, 1, EV_CURRENT);
2846 error (EXIT_FAILURE, 0, gettext ("invalid sh_link value in section %Zu"),
2849 /* Print the header. */
2850 printf (ngettext ("\
2851 \nVersion symbols section [%2u] '%s' contains %d entry:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'",
2853 \nVersion symbols section [%2u] '%s' contains %d entries:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'",
2854 shdr->sh_size / sh_entsize),
2855 (unsigned int) elf_ndxscn (scn),
2856 elf_strptr (ebl->elf, shstrndx, shdr->sh_name),
2857 (int) (shdr->sh_size / sh_entsize),
2858 class == ELFCLASS32 ? 10 : 18, shdr->sh_addr,
2860 (unsigned int) shdr->sh_link,
2861 elf_strptr (ebl->elf, shstrndx, glink->sh_name));
2863 /* Now we can finally look at the actual contents of this section. */
2864 for (unsigned int cnt = 0; cnt < shdr->sh_size / sh_entsize; ++cnt)
2867 printf ("\n %4d:", cnt);
2870 GElf_Versym *sym = gelf_getversym (data, cnt, &symmem);
2878 fputs_unlocked (gettext (" 0 *local* "),
2883 fputs_unlocked (gettext (" 1 *global* "),
2888 n = printf ("%4d%c%s",
2889 *sym & 0x7fff, *sym & 0x8000 ? 'h' : ' ',
2891 && (unsigned int) (*sym & 0x7fff) < nvername)
2892 ? vername[*sym & 0x7fff] : "???");
2893 if ((unsigned int) (*sym & 0x7fff) < nvername
2894 && filename != NULL && filename[*sym & 0x7fff] != NULL)
2895 n += printf ("(%s)", filename[*sym & 0x7fff]);
2896 printf ("%*s", MAX (0, 33 - (int) n), " ");
2900 putchar_unlocked ('\n');
2905 print_hash_info (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr, size_t shstrndx,
2906 uint_fast32_t maxlength, Elf32_Word nbucket,
2907 uint_fast32_t nsyms, uint32_t *lengths, const char *extrastr)
2909 uint32_t *counts = (uint32_t *) xcalloc (maxlength + 1, sizeof (uint32_t));
2911 for (Elf32_Word cnt = 0; cnt < nbucket; ++cnt)
2912 ++counts[lengths[cnt]];
2914 GElf_Shdr glink_mem;
2915 GElf_Shdr *glink = gelf_getshdr (elf_getscn (ebl->elf,
2920 error (0, 0, gettext ("invalid sh_link value in section %Zu"),
2925 printf (ngettext ("\
2926 \nHistogram for bucket list length in section [%2u] '%s' (total of %d bucket):\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'\n",
2928 \nHistogram for bucket list length in section [%2u] '%s' (total of %d buckets):\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'\n",
2930 (unsigned int) elf_ndxscn (scn),
2931 elf_strptr (ebl->elf, shstrndx, shdr->sh_name),
2933 gelf_getclass (ebl->elf) == ELFCLASS32 ? 10 : 18,
2936 (unsigned int) shdr->sh_link,
2937 elf_strptr (ebl->elf, shstrndx, glink->sh_name));
2939 if (extrastr != NULL)
2940 fputs (extrastr, stdout);
2942 if (likely (nbucket > 0))
2944 uint64_t success = 0;
2946 /* xgettext:no-c-format */
2947 fputs_unlocked (gettext ("\
2948 Length Number % of total Coverage\n"), stdout);
2949 printf (gettext (" 0 %6" PRIu32 " %5.1f%%\n"),
2950 counts[0], (counts[0] * 100.0) / nbucket);
2952 uint64_t nzero_counts = 0;
2953 for (Elf32_Word cnt = 1; cnt <= maxlength; ++cnt)
2955 nzero_counts += counts[cnt] * cnt;
2957 %7d %6" PRIu32 " %5.1f%% %5.1f%%\n"),
2958 (int) cnt, counts[cnt], (counts[cnt] * 100.0) / nbucket,
2959 (nzero_counts * 100.0) / nsyms);
2963 for (Elf32_Word cnt = 1; cnt <= maxlength; ++cnt)
2966 success += counts[cnt] * acc;
2970 Average number of tests: successful lookup: %f\n\
2971 unsuccessful lookup: %f\n"),
2972 (double) success / (double) nzero_counts,
2973 (double) nzero_counts / (double) nbucket);
2980 /* This function handles the traditional System V-style hash table format. */
2982 handle_sysv_hash (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr, size_t shstrndx)
2984 Elf_Data *data = elf_getdata (scn, NULL);
2985 if (unlikely (data == NULL))
2987 error (0, 0, gettext ("cannot get data for section %d: %s"),
2988 (int) elf_ndxscn (scn), elf_errmsg (-1));
2992 if (unlikely (data->d_size < 2 * sizeof (Elf32_Word)))
2995 error (0, 0, gettext ("invalid data in sysv.hash section %d"),
2996 (int) elf_ndxscn (scn));
3000 Elf32_Word nbucket = ((Elf32_Word *) data->d_buf)[0];
3001 Elf32_Word nchain = ((Elf32_Word *) data->d_buf)[1];
3003 uint64_t used_buf = (2ULL + nchain + nbucket) * sizeof (Elf32_Word);
3004 if (used_buf > data->d_size)
3007 Elf32_Word *bucket = &((Elf32_Word *) data->d_buf)[2];
3008 Elf32_Word *chain = &((Elf32_Word *) data->d_buf)[2 + nbucket];
3010 uint32_t *lengths = (uint32_t *) xcalloc (nbucket, sizeof (uint32_t));
3012 uint_fast32_t maxlength = 0;
3013 uint_fast32_t nsyms = 0;
3014 for (Elf32_Word cnt = 0; cnt < nbucket; ++cnt)
3016 Elf32_Word inner = bucket[cnt];
3017 while (inner > 0 && inner < nchain)
3020 if (maxlength < ++lengths[cnt])
3023 inner = chain[inner];
3027 print_hash_info (ebl, scn, shdr, shstrndx, maxlength, nbucket, nsyms,
3034 /* This function handles the incorrect, System V-style hash table
3035 format some 64-bit architectures use. */
3037 handle_sysv_hash64 (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr, size_t shstrndx)
3039 Elf_Data *data = elf_getdata (scn, NULL);
3040 if (unlikely (data == NULL))
3042 error (0, 0, gettext ("cannot get data for section %d: %s"),
3043 (int) elf_ndxscn (scn), elf_errmsg (-1));
3047 if (unlikely (data->d_size < 2 * sizeof (Elf64_Xword)))
3050 error (0, 0, gettext ("invalid data in sysv.hash64 section %d"),
3051 (int) elf_ndxscn (scn));
3055 Elf64_Xword nbucket = ((Elf64_Xword *) data->d_buf)[0];
3056 Elf64_Xword nchain = ((Elf64_Xword *) data->d_buf)[1];
3058 uint64_t maxwords = data->d_size / sizeof (Elf64_Xword);
3060 || maxwords - 2 < nbucket
3061 || maxwords - 2 - nbucket < nchain)
3064 Elf64_Xword *bucket = &((Elf64_Xword *) data->d_buf)[2];
3065 Elf64_Xword *chain = &((Elf64_Xword *) data->d_buf)[2 + nbucket];
3067 uint32_t *lengths = (uint32_t *) xcalloc (nbucket, sizeof (uint32_t));
3069 uint_fast32_t maxlength = 0;
3070 uint_fast32_t nsyms = 0;
3071 for (Elf64_Xword cnt = 0; cnt < nbucket; ++cnt)
3073 Elf64_Xword inner = bucket[cnt];
3074 while (inner > 0 && inner < nchain)
3077 if (maxlength < ++lengths[cnt])
3080 inner = chain[inner];
3084 print_hash_info (ebl, scn, shdr, shstrndx, maxlength, nbucket, nsyms,
3091 /* This function handles the GNU-style hash table format. */
3093 handle_gnu_hash (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr, size_t shstrndx)
3095 Elf_Data *data = elf_getdata (scn, NULL);
3096 if (unlikely (data == NULL))
3098 error (0, 0, gettext ("cannot get data for section %d: %s"),
3099 (int) elf_ndxscn (scn), elf_errmsg (-1));
3103 if (unlikely (data->d_size < 4 * sizeof (Elf32_Word)))
3106 error (0, 0, gettext ("invalid data in gnu.hash section %d"),
3107 (int) elf_ndxscn (scn));
3111 Elf32_Word nbucket = ((Elf32_Word *) data->d_buf)[0];
3112 Elf32_Word symbias = ((Elf32_Word *) data->d_buf)[1];
3114 /* Next comes the size of the bitmap. It's measured in words for
3115 the architecture. It's 32 bits for 32 bit archs, and 64 bits for
3116 64 bit archs. There is always a bloom filter present, so zero is
3117 an invalid value. */
3118 Elf32_Word bitmask_words = ((Elf32_Word *) data->d_buf)[2];
3119 if (gelf_getclass (ebl->elf) == ELFCLASS64)
3122 if (bitmask_words == 0)
3125 Elf32_Word shift = ((Elf32_Word *) data->d_buf)[3];
3127 /* Is there still room for the sym chain?
3128 Use uint64_t calculation to prevent 32bit overlow. */
3129 uint64_t used_buf = (4ULL + bitmask_words + nbucket) * sizeof (Elf32_Word);
3130 uint32_t max_nsyms = (data->d_size - used_buf) / sizeof (Elf32_Word);
3131 if (used_buf > data->d_size)
3134 uint32_t *lengths = (uint32_t *) xcalloc (nbucket, sizeof (uint32_t));
3136 Elf32_Word *bitmask = &((Elf32_Word *) data->d_buf)[4];
3137 Elf32_Word *bucket = &((Elf32_Word *) data->d_buf)[4 + bitmask_words];
3138 Elf32_Word *chain = &((Elf32_Word *) data->d_buf)[4 + bitmask_words
3141 /* Compute distribution of chain lengths. */
3142 uint_fast32_t maxlength = 0;
3143 uint_fast32_t nsyms = 0;
3144 for (Elf32_Word cnt = 0; cnt < nbucket; ++cnt)
3145 if (bucket[cnt] != 0)
3147 Elf32_Word inner = bucket[cnt] - symbias;
3151 if (maxlength < ++lengths[cnt])
3153 if (inner > max_nsyms)
3156 while ((chain[inner++] & 1) == 0);
3159 /* Count bits in bitmask. */
3160 uint_fast32_t nbits = 0;
3161 for (Elf32_Word cnt = 0; cnt < bitmask_words; ++cnt)
3163 uint_fast32_t word = bitmask[cnt];
3165 word = (word & 0x55555555) + ((word >> 1) & 0x55555555);
3166 word = (word & 0x33333333) + ((word >> 2) & 0x33333333);
3167 word = (word & 0x0f0f0f0f) + ((word >> 4) & 0x0f0f0f0f);
3168 word = (word & 0x00ff00ff) + ((word >> 8) & 0x00ff00ff);
3169 nbits += (word & 0x0000ffff) + ((word >> 16) & 0x0000ffff);
3173 if (unlikely (asprintf (&str, gettext ("\
3175 Bitmask Size: %zu bytes %" PRIuFAST32 "%% bits set 2nd hash shift: %u\n"),
3176 (unsigned int) symbias,
3177 bitmask_words * sizeof (Elf32_Word),
3179 / (uint_fast32_t) (bitmask_words
3180 * sizeof (Elf32_Word) * 8)),
3181 (unsigned int) shift) == -1))
3182 error (EXIT_FAILURE, 0, gettext ("memory exhausted"));
3184 print_hash_info (ebl, scn, shdr, shstrndx, maxlength, nbucket, nsyms,
3192 /* Find the symbol table(s). For this we have to search through the
3195 handle_hash (Ebl *ebl)
3197 /* Get the section header string table index. */
3199 if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0))
3200 error (EXIT_FAILURE, 0,
3201 gettext ("cannot get section header string table index"));
3203 Elf_Scn *scn = NULL;
3204 while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
3206 /* Handle the section if it is a symbol table. */
3208 GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
3210 if (likely (shdr != NULL))
3212 if (shdr->sh_type == SHT_HASH)
3214 if (ebl_sysvhash_entrysize (ebl) == sizeof (Elf64_Xword))
3215 handle_sysv_hash64 (ebl, scn, shdr, shstrndx);
3217 handle_sysv_hash (ebl, scn, shdr, shstrndx);
3219 else if (shdr->sh_type == SHT_GNU_HASH)
3220 handle_gnu_hash (ebl, scn, shdr, shstrndx);
3227 print_liblist (Ebl *ebl)
3229 /* Find the library list sections. For this we have to search
3230 through the section table. */
3231 Elf_Scn *scn = NULL;
3233 /* Get the section header string table index. */
3235 if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0))
3236 error (EXIT_FAILURE, 0,
3237 gettext ("cannot get section header string table index"));
3239 while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
3242 GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
3244 if (shdr != NULL && shdr->sh_type == SHT_GNU_LIBLIST)
3246 size_t sh_entsize = gelf_fsize (ebl->elf, ELF_T_LIB, 1, EV_CURRENT);
3247 int nentries = shdr->sh_size / sh_entsize;
3248 printf (ngettext ("\
3249 \nLibrary list section [%2zu] '%s' at offset %#0" PRIx64 " contains %d entry:\n",
3251 \nLibrary list section [%2zu] '%s' at offset %#0" PRIx64 " contains %d entries:\n",
3254 elf_strptr (ebl->elf, shstrndx, shdr->sh_name),
3258 Elf_Data *data = elf_getdata (scn, NULL);
3263 Library Time Stamp Checksum Version Flags"));
3265 for (int cnt = 0; cnt < nentries; ++cnt)
3268 GElf_Lib *lib = gelf_getlib (data, cnt, &lib_mem);
3269 if (unlikely (lib == NULL))
3272 time_t t = (time_t) lib->l_time_stamp;
3273 struct tm *tm = gmtime (&t);
3274 if (unlikely (tm == NULL))
3277 printf (" [%2d] %-29s %04u-%02u-%02uT%02u:%02u:%02u %08x %-7u %u\n",
3278 cnt, elf_strptr (ebl->elf, shdr->sh_link, lib->l_name),
3279 tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
3280 tm->tm_hour, tm->tm_min, tm->tm_sec,
3281 (unsigned int) lib->l_checksum,
3282 (unsigned int) lib->l_version,
3283 (unsigned int) lib->l_flags);
3290 print_attributes (Ebl *ebl, const GElf_Ehdr *ehdr)
3292 /* Find the object attributes sections. For this we have to search
3293 through the section table. */
3294 Elf_Scn *scn = NULL;
3296 /* Get the section header string table index. */
3298 if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0))
3299 error (EXIT_FAILURE, 0,
3300 gettext ("cannot get section header string table index"));
3302 while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
3305 GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
3307 if (shdr == NULL || (shdr->sh_type != SHT_GNU_ATTRIBUTES
3308 && (shdr->sh_type != SHT_ARM_ATTRIBUTES
3309 || ehdr->e_machine != EM_ARM)))
3313 \nObject attributes section [%2zu] '%s' of %" PRIu64
3314 " bytes at offset %#0" PRIx64 ":\n"),
3316 elf_strptr (ebl->elf, shstrndx, shdr->sh_name),
3317 shdr->sh_size, shdr->sh_offset);
3319 Elf_Data *data = elf_rawdata (scn, NULL);
3320 if (unlikely (data == NULL || data->d_size == 0))
3323 const unsigned char *p = data->d_buf;
3325 /* There is only one 'version', A. */
3326 if (unlikely (*p++ != 'A'))
3329 fputs_unlocked (gettext (" Owner Size\n"), stdout);
3331 inline size_t left (void)
3333 return (const unsigned char *) data->d_buf + data->d_size - p;
3336 /* Loop over the sections. */
3337 while (left () >= 4)
3339 /* Section length. */
3341 memcpy (&len, p, sizeof len);
3343 if (MY_ELFDATA != ehdr->e_ident[EI_DATA])
3346 if (unlikely (len > left ()))
3349 /* Section vendor name. */
3350 const unsigned char *name = p + sizeof len;
3353 unsigned const char *q = memchr (name, '\0', len);
3354 if (unlikely (q == NULL))
3358 printf (gettext (" %-13s %4" PRIu32 "\n"), name, len);
3360 bool gnu_vendor = (q - name == sizeof "gnu"
3361 && !memcmp (name, "gnu", sizeof "gnu"));
3363 /* Loop over subsections. */
3364 if (shdr->sh_type != SHT_GNU_ATTRIBUTES
3368 const unsigned char *const sub = q;
3370 unsigned int subsection_tag;
3371 get_uleb128 (subsection_tag, q);
3372 if (unlikely (q >= p))
3375 uint32_t subsection_len;
3376 if (unlikely (p - sub < (ptrdiff_t) sizeof subsection_len))
3379 memcpy (&subsection_len, q, sizeof subsection_len);
3381 if (MY_ELFDATA != ehdr->e_ident[EI_DATA])
3382 CONVERT (subsection_len);
3384 /* Don't overflow, ptrdiff_t might be 32bits, but signed. */
3385 if (unlikely (subsection_len == 0
3386 || subsection_len >= (uint32_t) PTRDIFF_MAX
3387 || p - sub < (ptrdiff_t) subsection_len))
3390 const unsigned char *r = q + sizeof subsection_len;
3391 q = sub + subsection_len;
3393 switch (subsection_tag)
3396 /* Unknown subsection, print and skip. */
3397 printf (gettext (" %-4u %12" PRIu32 "\n"),
3398 subsection_tag, subsection_len);
3401 case 1: /* Tag_File */
3402 printf (gettext (" File: %11" PRIu32 "\n"),
3408 get_uleb128 (tag, r);
3409 if (unlikely (r >= q))
3412 /* GNU style tags have either a uleb128 value,
3413 when lowest bit is not set, or a string
3414 when the lowest bit is set.
3415 "compatibility" (32) is special. It has
3416 both a string and a uleb128 value. For
3417 non-gnu we assume 6 till 31 only take ints.
3418 XXX see arm backend, do we need a separate
3421 const char *string = NULL;
3422 if (tag == 32 || (tag & 1) == 0
3423 || (! gnu_vendor && (tag > 5 && tag < 32)))
3425 get_uleb128 (value, r);
3432 || (! gnu_vendor && tag > 32)))
3433 || (! gnu_vendor && tag > 3 && tag < 6))
3435 string = (const char *) r;
3436 r = memchr (r, '\0', q - r);
3442 const char *tag_name = NULL;
3443 const char *value_name = NULL;
3444 ebl_check_object_attribute (ebl, (const char *) name,
3446 &tag_name, &value_name);
3448 if (tag_name != NULL)
3451 printf (gettext (" %s: %" PRId64 ", %s\n"),
3452 tag_name, value, string);
3453 else if (string == NULL && value_name == NULL)
3454 printf (gettext (" %s: %" PRId64 "\n"),
3457 printf (gettext (" %s: %s\n"),
3458 tag_name, string ?: value_name);
3462 /* For "gnu" vendor 32 "compatibility" has
3463 already been handled above. */
3465 || strcmp ((const char *) name, "gnu"));
3467 printf (gettext (" %u: %" PRId64 "\n"),
3470 printf (gettext (" %u: %s\n"),
3482 format_dwarf_addr (Dwfl_Module *dwflmod,
3483 int address_size, Dwarf_Addr address, Dwarf_Addr raw)
3485 /* See if there is a name we can give for this address. */
3488 const char *name = (print_address_names && ! print_unresolved_addresses)
3489 ? dwfl_module_addrinfo (dwflmod, address, &off, &sym, NULL, NULL, NULL)
3493 if (print_unresolved_addresses)
3500 /* Relativize the address. */
3501 int n = dwfl_module_relocations (dwflmod);
3502 int i = n < 1 ? -1 : dwfl_module_relocate_address (dwflmod, &address);
3504 /* In an ET_REL file there is a section name to refer to. */
3506 : dwfl_module_relocation_info (dwflmod, i, NULL));
3513 ? (address_size == 0
3514 ? asprintf (&result,
3515 gettext ("%s+%#" PRIx64 " <%s+%#" PRIx64 ">"),
3516 scn, address, name, off)
3517 : asprintf (&result,
3518 gettext ("%s+%#0*" PRIx64 " <%s+%#" PRIx64 ">"),
3519 scn, 2 + address_size * 2, address,
3521 : (address_size == 0
3522 ? asprintf (&result,
3523 gettext ("%#" PRIx64 " <%s+%#" PRIx64 ">"),
3525 : asprintf (&result,
3526 gettext ("%#0*" PRIx64 " <%s+%#" PRIx64 ">"),
3527 2 + address_size * 2, address,
3530 ? (address_size == 0
3531 ? asprintf (&result,
3532 gettext ("%s+%#" PRIx64 " <%s>"),
3534 : asprintf (&result,
3535 gettext ("%s+%#0*" PRIx64 " <%s>"),
3536 scn, 2 + address_size * 2, address, name))
3537 : (address_size == 0
3538 ? asprintf (&result,
3539 gettext ("%#" PRIx64 " <%s>"),
3541 : asprintf (&result,
3542 gettext ("%#0*" PRIx64 " <%s>"),
3543 2 + address_size * 2, address, name))))
3545 ? (address_size == 0
3546 ? asprintf (&result,
3547 gettext ("%s+%#" PRIx64),
3549 : asprintf (&result,
3550 gettext ("%s+%#0*" PRIx64),
3551 scn, 2 + address_size * 2, address))
3552 : (address_size == 0
3553 ? asprintf (&result,
3556 : asprintf (&result,
3558 2 + address_size * 2, address)))) < 0)
3559 error (EXIT_FAILURE, 0, _("memory exhausted"));
3565 dwarf_tag_string (unsigned int tag)
3569 #define ONE_KNOWN_DW_TAG(NAME, CODE) case CODE: return #NAME;
3571 #undef ONE_KNOWN_DW_TAG
3579 dwarf_attr_string (unsigned int attrnum)
3583 #define ONE_KNOWN_DW_AT(NAME, CODE) case CODE: return #NAME;
3585 #undef ONE_KNOWN_DW_AT
3593 dwarf_form_string (unsigned int form)
3597 #define ONE_KNOWN_DW_FORM_DESC(NAME, CODE, DESC) ONE_KNOWN_DW_FORM (NAME, CODE)
3598 #define ONE_KNOWN_DW_FORM(NAME, CODE) case CODE: return #NAME;
3600 #undef ONE_KNOWN_DW_FORM
3601 #undef ONE_KNOWN_DW_FORM_DESC
3609 dwarf_lang_string (unsigned int lang)
3613 #define ONE_KNOWN_DW_LANG_DESC(NAME, CODE, DESC) case CODE: return #NAME;
3615 #undef ONE_KNOWN_DW_LANG_DESC
3623 dwarf_inline_string (unsigned int code)
3625 static const char *const known[] =
3627 #define ONE_KNOWN_DW_INL(NAME, CODE) [CODE] = #NAME,
3629 #undef ONE_KNOWN_DW_INL
3632 if (likely (code < sizeof (known) / sizeof (known[0])))
3640 dwarf_encoding_string (unsigned int code)
3642 static const char *const known[] =
3644 #define ONE_KNOWN_DW_ATE(NAME, CODE) [CODE] = #NAME,
3646 #undef ONE_KNOWN_DW_ATE
3649 if (likely (code < sizeof (known) / sizeof (known[0])))
3657 dwarf_access_string (unsigned int code)
3659 static const char *const known[] =
3661 #define ONE_KNOWN_DW_ACCESS(NAME, CODE) [CODE] = #NAME,
3663 #undef ONE_KNOWN_DW_ACCESS
3666 if (likely (code < sizeof (known) / sizeof (known[0])))
3674 dwarf_visibility_string (unsigned int code)
3676 static const char *const known[] =
3678 #define ONE_KNOWN_DW_VIS(NAME, CODE) [CODE] = #NAME,
3680 #undef ONE_KNOWN_DW_VIS
3683 if (likely (code < sizeof (known) / sizeof (known[0])))
3691 dwarf_virtuality_string (unsigned int code)
3693 static const char *const known[] =
3695 #define ONE_KNOWN_DW_VIRTUALITY(NAME, CODE) [CODE] = #NAME,
3696 ALL_KNOWN_DW_VIRTUALITY
3697 #undef ONE_KNOWN_DW_VIRTUALITY
3700 if (likely (code < sizeof (known) / sizeof (known[0])))
3708 dwarf_identifier_case_string (unsigned int code)
3710 static const char *const known[] =
3712 #define ONE_KNOWN_DW_ID(NAME, CODE) [CODE] = #NAME,
3714 #undef ONE_KNOWN_DW_ID
3717 if (likely (code < sizeof (known) / sizeof (known[0])))
3725 dwarf_calling_convention_string (unsigned int code)
3727 static const char *const known[] =
3729 #define ONE_KNOWN_DW_CC(NAME, CODE) [CODE] = #NAME,
3731 #undef ONE_KNOWN_DW_CC
3734 if (likely (code < sizeof (known) / sizeof (known[0])))
3742 dwarf_ordering_string (unsigned int code)
3744 static const char *const known[] =
3746 #define ONE_KNOWN_DW_ORD(NAME, CODE) [CODE] = #NAME,
3748 #undef ONE_KNOWN_DW_ORD
3751 if (likely (code < sizeof (known) / sizeof (known[0])))
3759 dwarf_discr_list_string (unsigned int code)
3761 static const char *const known[] =
3763 #define ONE_KNOWN_DW_DSC(NAME, CODE) [CODE] = #NAME,
3765 #undef ONE_KNOWN_DW_DSC
3768 if (likely (code < sizeof (known) / sizeof (known[0])))
3776 dwarf_locexpr_opcode_string (unsigned int code)
3778 static const char *const known[] =
3780 /* Normally we can't affort building huge table of 64K entries,
3781 most of them zero, just because there are a couple defined
3782 values at the far end. In case of opcodes, it's OK. */
3783 #define ONE_KNOWN_DW_OP_DESC(NAME, CODE, DESC) ONE_KNOWN_DW_OP (NAME, CODE)
3784 #define ONE_KNOWN_DW_OP(NAME, CODE) [CODE] = #NAME,
3786 #undef ONE_KNOWN_DW_OP
3787 #undef ONE_KNOWN_DW_OP_DESC
3790 if (likely (code < sizeof (known) / sizeof (known[0])))
3797 /* Used by all dwarf_foo_name functions. */
3799 string_or_unknown (const char *known, unsigned int code,
3800 unsigned int lo_user, unsigned int hi_user,
3801 bool print_unknown_num)
3803 static char unknown_buf[20];
3805 if (likely (known != NULL))
3808 if (lo_user != 0 && code >= lo_user && code <= hi_user)
3810 snprintf (unknown_buf, sizeof unknown_buf, "lo_user+%#x",
3815 if (print_unknown_num)
3817 snprintf (unknown_buf, sizeof unknown_buf, "??? (%#x)", code);
3826 dwarf_tag_name (unsigned int tag)
3828 const char *ret = dwarf_tag_string (tag);
3829 return string_or_unknown (ret, tag, DW_TAG_lo_user, DW_TAG_hi_user, true);
3833 dwarf_attr_name (unsigned int attr)
3835 const char *ret = dwarf_attr_string (attr);
3836 return string_or_unknown (ret, attr, DW_AT_lo_user, DW_AT_hi_user, true);
3841 dwarf_form_name (unsigned int form)
3843 const char *ret = dwarf_form_string (form);
3844 return string_or_unknown (ret, form, 0, 0, true);
3849 dwarf_lang_name (unsigned int lang)
3851 const char *ret = dwarf_lang_string (lang);
3852 return string_or_unknown (ret, lang, DW_LANG_lo_user, DW_LANG_hi_user, false);
3857 dwarf_inline_name (unsigned int code)
3859 const char *ret = dwarf_inline_string (code);
3860 return string_or_unknown (ret, code, 0, 0, false);
3865 dwarf_encoding_name (unsigned int code)
3867 const char *ret = dwarf_encoding_string (code);
3868 return string_or_unknown (ret, code, DW_ATE_lo_user, DW_ATE_hi_user, false);
3873 dwarf_access_name (unsigned int code)
3875 const char *ret = dwarf_access_string (code);
3876 return string_or_unknown (ret, code, 0, 0, false);
3881 dwarf_visibility_name (unsigned int code)
3883 const char *ret = dwarf_visibility_string (code);
3884 return string_or_unknown (ret, code, 0, 0, false);
3889 dwarf_virtuality_name (unsigned int code)
3891 const char *ret = dwarf_virtuality_string (code);
3892 return string_or_unknown (ret, code, 0, 0, false);
3897 dwarf_identifier_case_name (unsigned int code)
3899 const char *ret = dwarf_identifier_case_string (code);
3900 return string_or_unknown (ret, code, 0, 0, false);
3905 dwarf_calling_convention_name (unsigned int code)
3907 const char *ret = dwarf_calling_convention_string (code);
3908 return string_or_unknown (ret, code, DW_CC_lo_user, DW_CC_hi_user, false);
3913 dwarf_ordering_name (unsigned int code)
3915 const char *ret = dwarf_ordering_string (code);
3916 return string_or_unknown (ret, code, 0, 0, false);
3921 dwarf_discr_list_name (unsigned int code)
3923 const char *ret = dwarf_discr_list_string (code);
3924 return string_or_unknown (ret, code, 0, 0, false);
3929 print_block (size_t n, const void *block)
3932 puts (_("empty block"));
3935 printf (_("%zu byte block:"), n);
3936 const unsigned char *data = block;
3938 printf (" %02x", *data++);
3945 print_ops (Dwfl_Module *dwflmod, Dwarf *dbg, int indent, int indentrest,
3946 unsigned int vers, unsigned int addrsize, unsigned int offset_size,
3947 struct Dwarf_CU *cu, Dwarf_Word len, const unsigned char *data)
3949 const unsigned int ref_size = vers < 3 ? addrsize : offset_size;
3953 printf ("%*s(empty)\n", indent, "");
3957 #define NEED(n) if (len < (Dwarf_Word) (n)) goto invalid
3958 #define CONSUME(n) NEED (n); else len -= (n)
3960 Dwarf_Word offset = 0;
3963 uint_fast8_t op = *data++;
3965 const char *op_name = dwarf_locexpr_opcode_string (op);
3966 if (unlikely (op_name == NULL))
3968 static char buf[20];
3969 if (op >= DW_OP_lo_user)
3970 snprintf (buf, sizeof buf, "lo_user+%#x", op - DW_OP_lo_user);
3972 snprintf (buf, sizeof buf, "??? (%#x)", op);
3979 /* Address operand. */
3983 addr = read_4ubyte_unaligned (dbg, data);
3986 assert (addrsize == 8);
3987 addr = read_8ubyte_unaligned (dbg, data);
3992 char *a = format_dwarf_addr (dwflmod, 0, addr, addr);
3993 printf ("%*s[%4" PRIuMAX "] %s %s\n",
3994 indent, "", (uintmax_t) offset, op_name, a);
3997 offset += 1 + addrsize;
4000 case DW_OP_call_ref:
4001 /* Offset operand. */
4003 goto invalid; /* Cannot be used in CFA. */
4006 addr = read_4ubyte_unaligned (dbg, data);
4009 assert (ref_size == 8);
4010 addr = read_8ubyte_unaligned (dbg, data);
4015 printf ("%*s[%4" PRIuMAX "] %s %#" PRIxMAX "\n",
4016 indent, "", (uintmax_t) offset,
4017 op_name, (uintmax_t) addr);
4018 offset += 1 + ref_size;
4021 case DW_OP_deref_size:
4022 case DW_OP_xderef_size:
4025 // XXX value might be modified by relocation
4027 printf ("%*s[%4" PRIuMAX "] %s %" PRIu8 "\n",
4028 indent, "", (uintmax_t) offset,
4029 op_name, *((uint8_t *) data));
4037 // XXX value might be modified by relocation
4038 printf ("%*s[%4" PRIuMAX "] %s %" PRIu16 "\n",
4039 indent, "", (uintmax_t) offset,
4040 op_name, read_2ubyte_unaligned (dbg, data));
4048 // XXX value might be modified by relocation
4049 printf ("%*s[%4" PRIuMAX "] %s %" PRIu32 "\n",
4050 indent, "", (uintmax_t) offset,
4051 op_name, read_4ubyte_unaligned (dbg, data));
4059 // XXX value might be modified by relocation
4060 printf ("%*s[%4" PRIuMAX "] %s %" PRIu64 "\n",
4061 indent, "", (uintmax_t) offset,
4062 op_name, (uint64_t) read_8ubyte_unaligned (dbg, data));
4070 // XXX value might be modified by relocation
4071 printf ("%*s[%4" PRIuMAX "] %s %" PRId8 "\n",
4072 indent, "", (uintmax_t) offset,
4073 op_name, *((int8_t *) data));
4081 // XXX value might be modified by relocation
4082 printf ("%*s[%4" PRIuMAX "] %s %" PRId16 "\n",
4083 indent, "", (uintmax_t) offset,
4084 op_name, read_2sbyte_unaligned (dbg, data));
4092 // XXX value might be modified by relocation
4093 printf ("%*s[%4" PRIuMAX "] %s %" PRId32 "\n",
4094 indent, "", (uintmax_t) offset,
4095 op_name, read_4sbyte_unaligned (dbg, data));
4103 // XXX value might be modified by relocation
4104 printf ("%*s[%4" PRIuMAX "] %s %" PRId64 "\n",
4105 indent, "", (uintmax_t) offset,
4106 op_name, read_8sbyte_unaligned (dbg, data));
4114 case DW_OP_plus_uconst:
4116 const unsigned char *start = data;
4119 get_uleb128 (uleb, data); /* XXX check overrun */
4120 printf ("%*s[%4" PRIuMAX "] %s %" PRIu64 "\n",
4121 indent, "", (uintmax_t) offset, op_name, uleb);
4122 CONSUME (data - start);
4123 offset += 1 + (data - start);
4126 case DW_OP_bit_piece:
4130 get_uleb128 (uleb, data); /* XXX check overrun */
4131 get_uleb128 (uleb2, data); /* XXX check overrun */
4132 printf ("%*s[%4" PRIuMAX "] %s %" PRIu64 ", %" PRIu64 "\n",
4133 indent, "", (uintmax_t) offset, op_name, uleb, uleb2);
4134 CONSUME (data - start);
4135 offset += 1 + (data - start);
4139 case DW_OP_breg0 ... DW_OP_breg31:
4144 get_sleb128 (sleb, data); /* XXX check overrun */
4145 printf ("%*s[%4" PRIuMAX "] %s %" PRId64 "\n",
4146 indent, "", (uintmax_t) offset, op_name, sleb);
4147 CONSUME (data - start);
4148 offset += 1 + (data - start);
4154 get_uleb128 (uleb, data); /* XXX check overrun */
4155 get_sleb128 (sleb, data); /* XXX check overrun */
4156 printf ("%*s[%4" PRIuMAX "] %s %" PRIu64 " %" PRId64 "\n",
4157 indent, "", (uintmax_t) offset, op_name, uleb, sleb);
4158 CONSUME (data - start);
4159 offset += 1 + (data - start);
4164 printf ("%*s[%4" PRIuMAX "] %s %" PRIu16 "\n",
4165 indent, "", (uintmax_t) offset, op_name,
4166 read_2ubyte_unaligned (dbg, data));
4173 printf ("%*s[%4" PRIuMAX "] %s %" PRIu32 "\n",
4174 indent, "", (uintmax_t) offset, op_name,
4175 read_4ubyte_unaligned (dbg, data));
4183 printf ("%*s[%4" PRIuMAX "] %s %" PRIuMAX "\n",
4184 indent, "", (uintmax_t) offset, op_name,
4185 (uintmax_t) (offset + read_2sbyte_unaligned (dbg, data) + 3));
4191 case DW_OP_implicit_value:
4194 get_uleb128 (uleb, data); /* XXX check overrun */
4195 printf ("%*s[%4" PRIuMAX "] %s: ",
4196 indent, "", (uintmax_t) offset, op_name);
4198 print_block (uleb, data);
4200 CONSUME (data - start);
4201 offset += 1 + (data - start);
4204 case DW_OP_GNU_implicit_pointer:
4205 /* DIE offset operand. */
4207 NEED (ref_size + 1);
4209 goto invalid; /* Cannot be used in CFA. */
4211 addr = read_4ubyte_unaligned (dbg, data);
4214 assert (ref_size == 8);
4215 addr = read_8ubyte_unaligned (dbg, data);
4218 /* Byte offset operand. */
4219 get_sleb128 (sleb, data); /* XXX check overrun */
4221 printf ("%*s[%4" PRIuMAX "] %s [%6" PRIxMAX "] %+" PRId64 "\n",
4222 indent, "", (intmax_t) offset,
4223 op_name, (uintmax_t) addr, sleb);
4224 CONSUME (data - start);
4225 offset += 1 + (data - start);
4228 case DW_OP_GNU_entry_value:
4229 /* Size plus expression block. */
4232 get_uleb128 (uleb, data); /* XXX check overrun */
4233 printf ("%*s[%4" PRIuMAX "] %s:\n",
4234 indent, "", (uintmax_t) offset, op_name);
4236 print_ops (dwflmod, dbg, indent + 6, indent + 6, vers,
4237 addrsize, offset_size, cu, uleb, data);
4239 CONSUME (data - start);
4240 offset += 1 + (data - start);
4243 case DW_OP_GNU_const_type:
4244 /* uleb128 CU relative DW_TAG_base_type DIE offset, 1-byte
4245 unsigned size plus block. */
4248 get_uleb128 (uleb, data); /* XXX check overrun */
4249 if (! print_unresolved_addresses && cu != NULL)
4251 uint8_t usize = *(uint8_t *) data++;
4253 printf ("%*s[%4" PRIuMAX "] %s [%6" PRIxMAX "] ",
4254 indent, "", (uintmax_t) offset, op_name, uleb);
4255 print_block (usize, data);
4257 CONSUME (data - start);
4258 offset += 1 + (data - start);
4261 case DW_OP_GNU_regval_type:
4262 /* uleb128 register number, uleb128 CU relative
4263 DW_TAG_base_type DIE offset. */
4266 get_uleb128 (uleb, data); /* XXX check overrun */
4267 get_uleb128 (uleb2, data); /* XXX check overrun */
4268 if (! print_unresolved_addresses && cu != NULL)
4270 printf ("%*s[%4" PRIuMAX "] %s %" PRIu64 " [%6" PRIx64 "]\n",
4271 indent, "", (uintmax_t) offset, op_name, uleb, uleb2);
4272 CONSUME (data - start);
4273 offset += 1 + (data - start);
4276 case DW_OP_GNU_deref_type:
4277 /* 1-byte unsigned size of value, uleb128 CU relative
4278 DW_TAG_base_type DIE offset. */
4281 usize = *(uint8_t *) data++;
4282 get_uleb128 (uleb, data); /* XXX check overrun */
4283 if (! print_unresolved_addresses && cu != NULL)
4285 printf ("%*s[%4" PRIuMAX "] %s %" PRIu8 " [%6" PRIxMAX "]\n",
4286 indent, "", (uintmax_t) offset,
4287 op_name, usize, uleb);
4288 CONSUME (data - start);
4289 offset += 1 + (data - start);
4292 case DW_OP_GNU_convert:
4293 case DW_OP_GNU_reinterpret:
4294 /* uleb128 CU relative offset to DW_TAG_base_type, or zero
4295 for conversion to untyped. */
4298 get_uleb128 (uleb, data); /* XXX check overrun */
4299 if (uleb != 0 && ! print_unresolved_addresses && cu != NULL)
4301 printf ("%*s[%4" PRIuMAX "] %s [%6" PRIxMAX "]\n",
4302 indent, "", (uintmax_t) offset, op_name, uleb);
4303 CONSUME (data - start);
4304 offset += 1 + (data - start);
4307 case DW_OP_GNU_parameter_ref:
4308 /* 4 byte CU relative reference to the abstract optimized away
4309 DW_TAG_formal_parameter. */
4311 uintmax_t param_off = (uintmax_t) read_4ubyte_unaligned (dbg, data);
4312 if (! print_unresolved_addresses && cu != NULL)
4313 param_off += cu->start;
4314 printf ("%*s[%4" PRIuMAX "] %s [%6" PRIxMAX "]\n",
4315 indent, "", (uintmax_t) offset, op_name, param_off);
4323 printf ("%*s[%4" PRIuMAX "] %s\n",
4324 indent, "", (uintmax_t) offset, op_name);
4329 indent = indentrest;
4333 printf (gettext ("%*s[%4" PRIuMAX "] %s <TRUNCATED>\n"),
4334 indent, "", (uintmax_t) offset, op_name);
4342 Dwarf_Off offset:(64 - 3);
4346 struct Dwarf_CU *cu;
4349 #define listptr_offset_size(p) ((p)->dwarf64 ? 8 : 4)
4350 #define listptr_address_size(p) ((p)->addr64 ? 8 : 4)
4353 listptr_base (struct listptr *p)
4356 Dwarf_Die cu = CUDIE (p->cu);
4357 /* Find the base address of the compilation unit. It will normally
4358 be specified by DW_AT_low_pc. In DWARF-3 draft 4, the base
4359 address could be overridden by DW_AT_entry_pc. It's been
4360 removed, but GCC emits DW_AT_entry_pc and not DW_AT_lowpc for
4361 compilation units with discontinuous ranges. */
4362 if (unlikely (dwarf_lowpc (&cu, &base) != 0))
4364 Dwarf_Attribute attr_mem;
4365 if (dwarf_formaddr (dwarf_attr (&cu, DW_AT_entry_pc, &attr_mem),
4373 compare_listptr (const void *a, const void *b, void *arg)
4375 const char *name = arg;
4376 struct listptr *p1 = (void *) a;
4377 struct listptr *p2 = (void *) b;
4379 if (p1->offset < p2->offset)
4381 if (p1->offset > p2->offset)
4384 if (!p1->warned && !p2->warned)
4386 if (p1->addr64 != p2->addr64)
4388 p1->warned = p2->warned = true;
4390 gettext ("%s %#" PRIx64 " used with different address sizes"),
4391 name, (uint64_t) p1->offset);
4393 if (p1->dwarf64 != p2->dwarf64)
4395 p1->warned = p2->warned = true;
4397 gettext ("%s %#" PRIx64 " used with different offset sizes"),
4398 name, (uint64_t) p1->offset);
4400 if (listptr_base (p1) != listptr_base (p2))
4402 p1->warned = p2->warned = true;
4404 gettext ("%s %#" PRIx64 " used with different base addresses"),
4405 name, (uint64_t) p1->offset);
4412 struct listptr_table
4416 struct listptr *table;
4419 static struct listptr_table known_loclistptr;
4420 static struct listptr_table known_rangelistptr;
4423 reset_listptr (struct listptr_table *table)
4425 free (table->table);
4426 table->table = NULL;
4427 table->n = table->alloc = 0;
4431 notice_listptr (enum section_e section, struct listptr_table *table,
4432 uint_fast8_t address_size, uint_fast8_t offset_size,
4433 struct Dwarf_CU *cu, Dwarf_Off offset)
4435 if (print_debug_sections & section)
4437 if (table->n == table->alloc)
4439 if (table->alloc == 0)
4443 table->table = xrealloc (table->table,
4444 table->alloc * sizeof table->table[0]);
4447 struct listptr *p = &table->table[table->n++];
4449 *p = (struct listptr)
4451 .addr64 = address_size == 8,
4452 .dwarf64 = offset_size == 8,
4456 assert (p->offset == offset);
4461 sort_listptr (struct listptr_table *table, const char *name)
4464 qsort_r (table->table, table->n, sizeof table->table[0],
4465 &compare_listptr, (void *) name);
4469 skip_listptr_hole (struct listptr_table *table, size_t *idxp,
4470 uint_fast8_t *address_sizep, uint_fast8_t *offset_sizep,
4471 Dwarf_Addr *base, struct Dwarf_CU **cu, ptrdiff_t offset,
4472 unsigned char **readp, unsigned char *endp)
4477 while (*idxp < table->n && table->table[*idxp].offset < (Dwarf_Off) offset)
4480 struct listptr *p = &table->table[*idxp];
4482 if (*idxp == table->n
4483 || p->offset >= (Dwarf_Off) (endp - *readp + offset))
4486 printf (gettext (" [%6tx] <UNUSED GARBAGE IN REST OF SECTION>\n"),
4491 if (p->offset != (Dwarf_Off) offset)
4493 *readp += p->offset - offset;
4494 printf (gettext (" [%6tx] <UNUSED GARBAGE> ... %" PRIu64 " bytes ...\n"),
4495 offset, (Dwarf_Off) p->offset - offset);
4499 if (address_sizep != NULL)
4500 *address_sizep = listptr_address_size (p);
4501 if (offset_sizep != NULL)
4502 *offset_sizep = listptr_offset_size (p);
4504 *base = listptr_base (p);
4513 print_debug_abbrev_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
4514 Ebl *ebl, GElf_Ehdr *ehdr,
4515 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
4517 const size_t sh_size = (dbg->sectiondata[IDX_debug_abbrev] ?
4518 dbg->sectiondata[IDX_debug_abbrev]->d_size : 0);
4520 printf (gettext ("\nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"
4522 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
4523 (uint64_t) shdr->sh_offset);
4525 Dwarf_Off offset = 0;
4526 while (offset < sh_size)
4528 printf (gettext ("\nAbbreviation section at offset %" PRIu64 ":\n"),
4534 Dwarf_Abbrev abbrev;
4536 int res = dwarf_offabbrev (dbg, offset, &length, &abbrev);
4539 if (unlikely (res < 0))
4542 *** error while reading abbreviation: %s\n"),
4547 /* This is the NUL byte at the end of the section. */
4552 /* We know these calls can never fail. */
4553 unsigned int code = dwarf_getabbrevcode (&abbrev);
4554 unsigned int tag = dwarf_getabbrevtag (&abbrev);
4555 int has_children = dwarf_abbrevhaschildren (&abbrev);
4557 printf (gettext (" [%5u] offset: %" PRId64
4558 ", children: %s, tag: %s\n"),
4559 code, (int64_t) offset,
4560 has_children ? gettext ("yes") : gettext ("no"),
4561 dwarf_tag_name (tag));
4567 while (dwarf_getabbrevattr (&abbrev, cnt,
4568 &name, &form, &enoffset) == 0)
4570 printf (" attr: %s, form: %s, offset: %#" PRIx64 "\n",
4571 dwarf_attr_name (name), dwarf_form_name (form),
4572 (uint64_t) enoffset);
4583 /* Print content of DWARF .debug_aranges section. We fortunately do
4584 not have to know a bit about the structure of the section, libdwarf
4585 takes care of it. */
4587 print_decoded_aranges_section (Ebl *ebl, GElf_Ehdr *ehdr, Elf_Scn *scn,
4588 GElf_Shdr *shdr, Dwarf *dbg)
4590 Dwarf_Aranges *aranges;
4592 if (unlikely (dwarf_getaranges (dbg, &aranges, &cnt) != 0))
4594 error (0, 0, gettext ("cannot get .debug_aranges content: %s"),
4599 GElf_Shdr glink_mem;
4601 glink = gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link), &glink_mem);
4604 error (0, 0, gettext ("invalid sh_link value in section %Zu"),
4609 printf (ngettext ("\
4610 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 " contains %zu entry:\n",
4612 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 " contains %zu entries:\n",
4614 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
4615 (uint64_t) shdr->sh_offset, cnt);
4617 /* Compute floor(log16(cnt)). */
4626 for (size_t n = 0; n < cnt; ++n)
4628 Dwarf_Arange *runp = dwarf_onearange (aranges, n);
4629 if (unlikely (runp == NULL))
4631 printf ("cannot get arange %zu: %s\n", n, dwarf_errmsg (-1));
4639 if (unlikely (dwarf_getarangeinfo (runp, &start, &length, &offset) != 0))
4640 printf (gettext (" [%*zu] ???\n"), digits, n);
4642 printf (gettext (" [%*zu] start: %0#*" PRIx64
4643 ", length: %5" PRIu64 ", CU DIE offset: %6"
4645 digits, n, ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 10 : 18,
4646 (uint64_t) start, (uint64_t) length, (int64_t) offset);
4651 /* Print content of DWARF .debug_aranges section. */
4653 print_debug_aranges_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
4654 Ebl *ebl, GElf_Ehdr *ehdr, Elf_Scn *scn,
4655 GElf_Shdr *shdr, Dwarf *dbg)
4659 print_decoded_aranges_section (ebl, ehdr, scn, shdr, dbg);
4663 Elf_Data *data = dbg->sectiondata[IDX_debug_aranges];
4665 if (unlikely (data == NULL))
4667 error (0, 0, gettext ("cannot get .debug_aranges content: %s"),
4673 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
4674 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
4675 (uint64_t) shdr->sh_offset);
4677 const unsigned char *readp = data->d_buf;
4678 const unsigned char *readendp = readp + data->d_size;
4680 while (readp < readendp)
4682 const unsigned char *hdrstart = readp;
4683 size_t start_offset = hdrstart - (const unsigned char *) data->d_buf;
4685 printf (gettext ("\nTable at offset %Zu:\n"), start_offset);
4686 if (readp + 4 > readendp)
4689 error (0, 0, gettext ("invalid data in section [%zu] '%s'"),
4690 elf_ndxscn (scn), section_name (ebl, ehdr, shdr));
4694 Dwarf_Word length = read_4ubyte_unaligned_inc (dbg, readp);
4695 unsigned int length_bytes = 4;
4696 if (length == DWARF3_LENGTH_64_BIT)
4698 if (readp + 8 > readendp)
4700 length = read_8ubyte_unaligned_inc (dbg, readp);
4704 const unsigned char *nexthdr = readp + length;
4705 printf (gettext ("\n Length: %6" PRIu64 "\n"),
4708 if (unlikely ((ptrdiff_t) length > readendp - readp))
4714 if (readp + 2 > readendp)
4716 uint_fast16_t version = read_2ubyte_unaligned_inc (dbg, readp);
4717 printf (gettext (" DWARF version: %6" PRIuFAST16 "\n"),
4721 error (0, 0, gettext ("unsupported aranges version"));
4726 if (readp + length_bytes > readendp)
4728 if (length_bytes == 8)
4729 offset = read_8ubyte_unaligned_inc (dbg, readp);
4731 offset = read_4ubyte_unaligned_inc (dbg, readp);
4732 printf (gettext (" CU offset: %6" PRIx64 "\n"),
4735 if (readp + 1 > readendp)
4737 unsigned int address_size = *readp++;
4738 printf (gettext (" Address size: %6" PRIu64 "\n"),
4739 (uint64_t) address_size);
4740 if (address_size != 4 && address_size != 8)
4742 error (0, 0, gettext ("unsupported address size"));
4746 unsigned int segment_size = *readp++;
4747 printf (gettext (" Segment size: %6" PRIu64 "\n\n"),
4748 (uint64_t) segment_size);
4749 if (segment_size != 0 && segment_size != 4 && segment_size != 8)
4751 error (0, 0, gettext ("unsupported segment size"));
4755 /* Round the address to the next multiple of 2*address_size. */
4756 readp += ((2 * address_size - ((readp - hdrstart) % (2 * address_size)))
4757 % (2 * address_size));
4759 while (readp < nexthdr)
4761 Dwarf_Word range_address;
4762 Dwarf_Word range_length;
4763 Dwarf_Word segment = 0;
4764 if (readp + 2 * address_size + segment_size > readendp)
4766 if (address_size == 4)
4768 range_address = read_4ubyte_unaligned_inc (dbg, readp);
4769 range_length = read_4ubyte_unaligned_inc (dbg, readp);
4773 range_address = read_8ubyte_unaligned_inc (dbg, readp);
4774 range_length = read_8ubyte_unaligned_inc (dbg, readp);
4777 if (segment_size == 4)
4778 segment = read_4ubyte_unaligned_inc (dbg, readp);
4779 else if (segment_size == 8)
4780 segment = read_8ubyte_unaligned_inc (dbg, readp);
4782 if (range_address == 0 && range_length == 0 && segment == 0)
4785 char *b = format_dwarf_addr (dwflmod, address_size, range_address,
4787 char *e = format_dwarf_addr (dwflmod, address_size,
4788 range_address + range_length - 1,
4790 if (segment_size != 0)
4791 printf (gettext (" %s..%s (%" PRIx64 ")\n"), b, e,
4792 (uint64_t) segment);
4794 printf (gettext (" %s..%s\n"), b, e);
4800 if (readp != nexthdr)
4802 size_t padding = nexthdr - readp;
4803 printf (gettext (" %Zu padding bytes\n"), padding);
4810 /* Print content of DWARF .debug_ranges section. */
4812 print_debug_ranges_section (Dwfl_Module *dwflmod,
4813 Ebl *ebl, GElf_Ehdr *ehdr,
4814 Elf_Scn *scn, GElf_Shdr *shdr,
4817 Elf_Data *data = dbg->sectiondata[IDX_debug_ranges];
4819 if (unlikely (data == NULL))
4821 error (0, 0, gettext ("cannot get .debug_ranges content: %s"),
4827 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
4828 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
4829 (uint64_t) shdr->sh_offset);
4831 sort_listptr (&known_rangelistptr, "rangelistptr");
4832 size_t listptr_idx = 0;
4834 uint_fast8_t address_size = ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8;
4837 Dwarf_Addr base = 0;
4838 unsigned char *const endp = (unsigned char *) data->d_buf + data->d_size;
4839 unsigned char *readp = data->d_buf;
4840 while (readp < endp)
4842 ptrdiff_t offset = readp - (unsigned char *) data->d_buf;
4844 if (first && skip_listptr_hole (&known_rangelistptr, &listptr_idx,
4845 &address_size, NULL, &base, NULL,
4846 offset, &readp, endp))
4849 if (unlikely (data->d_size - offset < (size_t) address_size * 2))
4851 printf (gettext (" [%6tx] <INVALID DATA>\n"), offset);
4857 if (address_size == 8)
4859 begin = read_8ubyte_unaligned_inc (dbg, readp);
4860 end = read_8ubyte_unaligned_inc (dbg, readp);
4864 begin = read_4ubyte_unaligned_inc (dbg, readp);
4865 end = read_4ubyte_unaligned_inc (dbg, readp);
4866 if (begin == (Dwarf_Addr) (uint32_t) -1)
4867 begin = (Dwarf_Addr) -1l;
4870 if (begin == (Dwarf_Addr) -1l) /* Base address entry. */
4872 char *b = format_dwarf_addr (dwflmod, address_size, end, end);
4873 printf (gettext (" [%6tx] base address %s\n"), offset, b);
4877 else if (begin == 0 && end == 0) /* End of list entry. */
4880 printf (gettext (" [%6tx] empty list\n"), offset);
4885 char *b = format_dwarf_addr (dwflmod, address_size, base + begin,
4887 char *e = format_dwarf_addr (dwflmod, address_size, base + end,
4889 /* We have an address range entry. */
4890 if (first) /* First address range entry in a list. */
4891 printf (gettext (" [%6tx] %s..%s\n"), offset, b, e);
4893 printf (gettext (" %s..%s\n"), b, e);
4902 #define REGNAMESZ 16
4904 register_info (Ebl *ebl, unsigned int regno, const Ebl_Register_Location *loc,
4905 char name[REGNAMESZ], int *bits, int *type)
4910 ssize_t n = ebl_register_info (ebl, regno, name, REGNAMESZ, &pfx, &set,
4911 bits ?: &ignore, type ?: &ignore);
4915 snprintf (name, REGNAMESZ, "reg%u", loc->regno);
4917 snprintf (name, REGNAMESZ, "??? 0x%x", regno);
4919 *bits = loc != NULL ? loc->bits : 0;
4921 *type = DW_ATE_unsigned;
4922 set = "??? unrecognized";
4926 if (bits != NULL && *bits <= 0)
4927 *bits = loc != NULL ? loc->bits : 0;
4928 if (type != NULL && *type == DW_ATE_void)
4929 *type = DW_ATE_unsigned;
4936 print_cfa_program (const unsigned char *readp, const unsigned char *const endp,
4937 Dwarf_Word vma_base, unsigned int code_align,
4939 unsigned int version, unsigned int ptr_size,
4940 Dwfl_Module *dwflmod, Ebl *ebl, Dwarf *dbg)
4942 char regnamebuf[REGNAMESZ];
4943 const char *regname (unsigned int regno)
4945 register_info (ebl, regno, NULL, regnamebuf, NULL, NULL);
4949 puts ("\n Program:");
4950 Dwarf_Word pc = vma_base;
4951 while (readp < endp)
4953 unsigned int opcode = *readp++;
4955 if (opcode < DW_CFA_advance_loc)
4956 /* Extended opcode. */
4967 case DW_CFA_set_loc:
4968 // XXX overflow check
4969 get_uleb128 (op1, readp);
4971 printf (" set_loc %" PRIu64 "\n", op1 * code_align);
4973 case DW_CFA_advance_loc1:
4974 printf (" advance_loc1 %u to %#" PRIx64 "\n",
4975 *readp, pc += *readp * code_align);
4978 case DW_CFA_advance_loc2:
4979 op1 = read_2ubyte_unaligned_inc (dbg, readp);
4980 printf (" advance_loc2 %" PRIu64 " to %#" PRIx64 "\n",
4981 op1, pc += op1 * code_align);
4983 case DW_CFA_advance_loc4:
4984 op1 = read_4ubyte_unaligned_inc (dbg, readp);
4985 printf (" advance_loc4 %" PRIu64 " to %#" PRIx64 "\n",
4986 op1, pc += op1 * code_align);
4988 case DW_CFA_offset_extended:
4989 // XXX overflow check
4990 get_uleb128 (op1, readp);
4991 get_uleb128 (op2, readp);
4992 printf (" offset_extended r%" PRIu64 " (%s) at cfa%+" PRId64
4994 op1, regname (op1), op2 * data_align);
4996 case DW_CFA_restore_extended:
4997 // XXX overflow check
4998 get_uleb128 (op1, readp);
4999 printf (" restore_extended r%" PRIu64 " (%s)\n",
5000 op1, regname (op1));
5002 case DW_CFA_undefined:
5003 // XXX overflow check
5004 get_uleb128 (op1, readp);
5005 printf (" undefined r%" PRIu64 " (%s)\n", op1, regname (op1));
5007 case DW_CFA_same_value:
5008 // XXX overflow check
5009 get_uleb128 (op1, readp);
5010 printf (" same_value r%" PRIu64 " (%s)\n", op1, regname (op1));
5012 case DW_CFA_register:
5013 // XXX overflow check
5014 get_uleb128 (op1, readp);
5015 get_uleb128 (op2, readp);
5016 printf (" register r%" PRIu64 " (%s) in r%" PRIu64 " (%s)\n",
5017 op1, regname (op1), op2, regname (op2));
5019 case DW_CFA_remember_state:
5020 puts (" remember_state");
5022 case DW_CFA_restore_state:
5023 puts (" restore_state");
5025 case DW_CFA_def_cfa:
5026 // XXX overflow check
5027 get_uleb128 (op1, readp);
5028 get_uleb128 (op2, readp);
5029 printf (" def_cfa r%" PRIu64 " (%s) at offset %" PRIu64 "\n",
5030 op1, regname (op1), op2);
5032 case DW_CFA_def_cfa_register:
5033 // XXX overflow check
5034 get_uleb128 (op1, readp);
5035 printf (" def_cfa_register r%" PRIu64 " (%s)\n",
5036 op1, regname (op1));
5038 case DW_CFA_def_cfa_offset:
5039 // XXX overflow check
5040 get_uleb128 (op1, readp);
5041 printf (" def_cfa_offset %" PRIu64 "\n", op1);
5043 case DW_CFA_def_cfa_expression:
5044 // XXX overflow check
5045 get_uleb128 (op1, readp); /* Length of DW_FORM_block. */
5046 printf (" def_cfa_expression %" PRIu64 "\n", op1);
5047 if ((uint64_t) (endp - readp) < op1)
5050 fputs (gettext (" <INVALID DATA>\n"), stdout);
5053 print_ops (dwflmod, dbg, 10, 10, version, ptr_size, 0, NULL,
5057 case DW_CFA_expression:
5058 // XXX overflow check
5059 get_uleb128 (op1, readp);
5060 get_uleb128 (op2, readp); /* Length of DW_FORM_block. */
5061 printf (" expression r%" PRIu64 " (%s) \n",
5062 op1, regname (op1));
5063 if ((uint64_t) (endp - readp) < op2)
5065 print_ops (dwflmod, dbg, 10, 10, version, ptr_size, 0, NULL,
5069 case DW_CFA_offset_extended_sf:
5070 // XXX overflow check
5071 get_uleb128 (op1, readp);
5072 get_sleb128 (sop2, readp);
5073 printf (" offset_extended_sf r%" PRIu64 " (%s) at cfa%+"
5075 op1, regname (op1), sop2 * data_align);
5077 case DW_CFA_def_cfa_sf:
5078 // XXX overflow check
5079 get_uleb128 (op1, readp);
5080 get_sleb128 (sop2, readp);
5081 printf (" def_cfa_sf r%" PRIu64 " (%s) at offset %" PRId64 "\n",
5082 op1, regname (op1), sop2 * data_align);
5084 case DW_CFA_def_cfa_offset_sf:
5085 // XXX overflow check
5086 get_sleb128 (sop1, readp);
5087 printf (" def_cfa_offset_sf %" PRId64 "\n", sop1 * data_align);
5089 case DW_CFA_val_offset:
5090 // XXX overflow check
5091 get_uleb128 (op1, readp);
5092 get_uleb128 (op2, readp);
5093 printf (" val_offset %" PRIu64 " at offset %" PRIu64 "\n",
5094 op1, op2 * data_align);
5096 case DW_CFA_val_offset_sf:
5097 // XXX overflow check
5098 get_uleb128 (op1, readp);
5099 get_sleb128 (sop2, readp);
5100 printf (" val_offset_sf %" PRIu64 " at offset %" PRId64 "\n",
5101 op1, sop2 * data_align);
5103 case DW_CFA_val_expression:
5104 // XXX overflow check
5105 get_uleb128 (op1, readp);
5106 get_uleb128 (op2, readp); /* Length of DW_FORM_block. */
5107 printf (" val_expression r%" PRIu64 " (%s)\n",
5108 op1, regname (op1));
5109 if ((uint64_t) (endp - readp) < op2)
5111 print_ops (dwflmod, dbg, 10, 10, version, ptr_size, 0,
5115 case DW_CFA_MIPS_advance_loc8:
5116 op1 = read_8ubyte_unaligned_inc (dbg, readp);
5117 printf (" MIPS_advance_loc8 %" PRIu64 " to %#" PRIx64 "\n",
5118 op1, pc += op1 * code_align);
5120 case DW_CFA_GNU_window_save:
5121 puts (" GNU_window_save");
5123 case DW_CFA_GNU_args_size:
5124 // XXX overflow check
5125 get_uleb128 (op1, readp);
5126 printf (" args_size %" PRIu64 "\n", op1);
5129 printf (" ??? (%u)\n", opcode);
5132 else if (opcode < DW_CFA_offset)
5133 printf (" advance_loc %u to %#" PRIx64 "\n",
5134 opcode & 0x3f, pc += (opcode & 0x3f) * code_align);
5135 else if (opcode < DW_CFA_restore)
5138 // XXX overflow check
5139 get_uleb128 (offset, readp);
5140 printf (" offset r%u (%s) at cfa%+" PRId64 "\n",
5141 opcode & 0x3f, regname (opcode & 0x3f), offset * data_align);
5144 printf (" restore r%u (%s)\n",
5145 opcode & 0x3f, regname (opcode & 0x3f));
5151 encoded_ptr_size (int encoding, unsigned int ptr_size)
5153 switch (encoding & 7)
5155 case DW_EH_PE_udata4:
5157 case DW_EH_PE_udata8:
5163 fprintf (stderr, "Unsupported pointer encoding: %#x, "
5164 "assuming pointer size of %d.\n", encoding, ptr_size);
5170 print_encoding (unsigned int val)
5174 case DW_EH_PE_absptr:
5175 fputs ("absptr", stdout);
5177 case DW_EH_PE_uleb128:
5178 fputs ("uleb128", stdout);
5180 case DW_EH_PE_udata2:
5181 fputs ("udata2", stdout);
5183 case DW_EH_PE_udata4:
5184 fputs ("udata4", stdout);
5186 case DW_EH_PE_udata8:
5187 fputs ("udata8", stdout);
5189 case DW_EH_PE_sleb128:
5190 fputs ("sleb128", stdout);
5192 case DW_EH_PE_sdata2:
5193 fputs ("sdata2", stdout);
5195 case DW_EH_PE_sdata4:
5196 fputs ("sdata4", stdout);
5198 case DW_EH_PE_sdata8:
5199 fputs ("sdata8", stdout);
5202 /* We did not use any of the bits after all. */
5211 print_relinfo (unsigned int val)
5215 case DW_EH_PE_pcrel:
5216 fputs ("pcrel", stdout);
5218 case DW_EH_PE_textrel:
5219 fputs ("textrel", stdout);
5221 case DW_EH_PE_datarel:
5222 fputs ("datarel", stdout);
5224 case DW_EH_PE_funcrel:
5225 fputs ("funcrel", stdout);
5227 case DW_EH_PE_aligned:
5228 fputs ("aligned", stdout);
5239 print_encoding_base (const char *pfx, unsigned int fde_encoding)
5241 printf ("(%s", pfx);
5243 if (fde_encoding == DW_EH_PE_omit)
5247 unsigned int w = fde_encoding;
5249 w = print_encoding (w);
5253 if (w != fde_encoding)
5254 fputc_unlocked (' ', stdout);
5256 w = print_relinfo (w);
5260 printf ("%s%x", w != fde_encoding ? " " : "", w);
5267 static const unsigned char *
5268 read_encoded (unsigned int encoding, const unsigned char *readp,
5269 const unsigned char *const endp, uint64_t *res, Dwarf *dbg)
5271 if ((encoding & 0xf) == DW_EH_PE_absptr)
5272 encoding = gelf_getclass (dbg->elf) == ELFCLASS32
5273 ? DW_EH_PE_udata4 : DW_EH_PE_udata8;
5275 switch (encoding & 0xf)
5277 case DW_EH_PE_uleb128:
5278 // XXX buffer overrun check
5279 get_uleb128 (*res, readp);
5281 case DW_EH_PE_sleb128:
5282 // XXX buffer overrun check
5283 get_sleb128 (*res, readp);
5285 case DW_EH_PE_udata2:
5286 if (readp + 2 > endp)
5288 *res = read_2ubyte_unaligned_inc (dbg, readp);
5290 case DW_EH_PE_udata4:
5291 if (readp + 4 > endp)
5293 *res = read_4ubyte_unaligned_inc (dbg, readp);
5295 case DW_EH_PE_udata8:
5296 if (readp + 8 > endp)
5298 *res = read_8ubyte_unaligned_inc (dbg, readp);
5300 case DW_EH_PE_sdata2:
5301 if (readp + 2 > endp)
5303 *res = read_2sbyte_unaligned_inc (dbg, readp);
5305 case DW_EH_PE_sdata4:
5306 if (readp + 4 > endp)
5308 *res = read_4sbyte_unaligned_inc (dbg, readp);
5310 case DW_EH_PE_sdata8:
5311 if (readp + 8 > endp)
5313 *res = read_8sbyte_unaligned_inc (dbg, readp);
5318 gettext ("invalid encoding"));
5326 print_debug_frame_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
5327 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
5330 /* We know this call will succeed since it did in the caller. */
5331 (void) elf_getshdrstrndx (ebl->elf, &shstrndx);
5332 const char *scnname = elf_strptr (ebl->elf, shstrndx, shdr->sh_name);
5334 /* Needed if we find PC-relative addresses. */
5336 if (dwfl_module_getelf (dwflmod, &bias) == NULL)
5338 error (0, 0, gettext ("cannot get ELF: %s"), dwfl_errmsg (-1));
5342 bool is_eh_frame = strcmp (scnname, ".eh_frame") == 0;
5343 Elf_Data *data = (is_eh_frame
5344 ? elf_rawdata (scn, NULL)
5345 : dbg->sectiondata[IDX_debug_frame]);
5347 if (unlikely (data == NULL))
5349 error (0, 0, gettext ("cannot get %s content: %s"),
5350 scnname, elf_errmsg (-1));
5356 \nCall frame information section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
5357 elf_ndxscn (scn), scnname, (uint64_t) shdr->sh_offset);
5360 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
5361 elf_ndxscn (scn), scnname, (uint64_t) shdr->sh_offset);
5365 ptrdiff_t cie_offset;
5366 const char *augmentation;
5367 unsigned int code_alignment_factor;
5368 unsigned int data_alignment_factor;
5369 uint8_t address_size;
5370 uint8_t fde_encoding;
5371 uint8_t lsda_encoding;
5372 struct cieinfo *next;
5375 const unsigned char *readp = data->d_buf;
5376 const unsigned char *const dataend = ((unsigned char *) data->d_buf
5378 while (readp < dataend)
5380 if (unlikely (readp + 4 > dataend))
5383 error (0, 0, gettext ("invalid data in section [%zu] '%s'"),
5384 elf_ndxscn (scn), scnname);
5388 /* At the beginning there must be a CIE. There can be multiple,
5389 hence we test tis in a loop. */
5390 ptrdiff_t offset = readp - (unsigned char *) data->d_buf;
5392 Dwarf_Word unit_length = read_4ubyte_unaligned_inc (dbg, readp);
5393 unsigned int length = 4;
5394 if (unlikely (unit_length == 0xffffffff))
5396 if (unlikely (readp + 8 > dataend))
5399 unit_length = read_8ubyte_unaligned_inc (dbg, readp);
5403 if (unlikely (unit_length == 0))
5405 printf (gettext ("\n [%6tx] Zero terminator\n"), offset);
5409 Dwarf_Word maxsize = dataend - readp;
5410 if (unlikely (unit_length > maxsize))
5413 unsigned int ptr_size = ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8;
5415 ptrdiff_t start = readp - (unsigned char *) data->d_buf;
5416 const unsigned char *const cieend = readp + unit_length;
5417 if (unlikely (cieend > dataend || readp + 8 > dataend))
5423 cie_id = read_4ubyte_unaligned_inc (dbg, readp);
5424 if (!is_eh_frame && cie_id == DW_CIE_ID_32)
5425 cie_id = DW_CIE_ID_64;
5428 cie_id = read_8ubyte_unaligned_inc (dbg, readp);
5430 uint_fast8_t version = 2;
5431 unsigned int code_alignment_factor;
5432 int data_alignment_factor;
5433 unsigned int fde_encoding = 0;
5434 unsigned int lsda_encoding = 0;
5435 Dwarf_Word initial_location = 0;
5436 Dwarf_Word vma_base = 0;
5438 if (cie_id == (is_eh_frame ? 0 : DW_CIE_ID_64))
5441 const char *const augmentation = (const char *) readp;
5442 readp = memchr (readp, '\0', cieend - readp);
5443 if (unlikely (readp == NULL))
5447 uint_fast8_t segment_size = 0;
5450 if (cieend - readp < 5)
5452 ptr_size = *readp++;
5453 segment_size = *readp++;
5456 // XXX Check overflow
5457 get_uleb128 (code_alignment_factor, readp);
5458 // XXX Check overflow
5459 get_sleb128 (data_alignment_factor, readp);
5461 /* In some variant for unwind data there is another field. */
5462 if (strcmp (augmentation, "eh") == 0)
5463 readp += ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8;
5465 unsigned int return_address_register;
5466 if (unlikely (version == 1))
5467 return_address_register = *readp++;
5469 // XXX Check overflow
5470 get_uleb128 (return_address_register, readp);
5472 printf ("\n [%6tx] CIE length=%" PRIu64 "\n"
5473 " CIE_id: %" PRIu64 "\n"
5475 " augmentation: \"%s\"\n",
5476 offset, (uint64_t) unit_length, (uint64_t) cie_id,
5477 version, augmentation);
5479 printf (" address_size: %u\n"
5480 " segment_size: %u\n",
5481 ptr_size, segment_size);
5482 printf (" code_alignment_factor: %u\n"
5483 " data_alignment_factor: %d\n"
5484 " return_address_register: %u\n",
5485 code_alignment_factor,
5486 data_alignment_factor, return_address_register);
5488 if (augmentation[0] == 'z')
5490 unsigned int augmentationlen;
5491 get_uleb128 (augmentationlen, readp);
5493 if (augmentationlen > (size_t) (dataend - readp))
5495 error (0, 0, gettext ("invalid augmentation length"));
5500 const char *hdr = "Augmentation data:";
5501 const char *cp = augmentation + 1;
5504 printf (" %-26s%#x ", hdr, *readp);
5509 fde_encoding = *readp++;
5510 print_encoding_base (gettext ("FDE address encoding: "),
5513 else if (*cp == 'L')
5515 lsda_encoding = *readp++;
5516 print_encoding_base (gettext ("LSDA pointer encoding: "),
5519 else if (*cp == 'P')
5521 /* Personality. This field usually has a relocation
5522 attached pointing to __gcc_personality_v0. */
5523 const unsigned char *startp = readp;
5524 unsigned int encoding = *readp++;
5526 readp = read_encoded (encoding, readp,
5527 readp - 1 + augmentationlen,
5530 while (++startp < readp)
5531 printf ("%#x ", *startp);
5534 print_encoding (encoding);
5536 switch (encoding & 0xf)
5538 case DW_EH_PE_sleb128:
5539 case DW_EH_PE_sdata2:
5540 case DW_EH_PE_sdata4:
5541 printf ("%" PRId64 ")\n", val);
5544 printf ("%#" PRIx64 ")\n", val);
5549 printf ("(%x)\n", *readp++);
5555 if (likely (ptr_size == 4 || ptr_size == 8))
5557 struct cieinfo *newp = alloca (sizeof (*newp));
5558 newp->cie_offset = offset;
5559 newp->augmentation = augmentation;
5560 newp->fde_encoding = fde_encoding;
5561 newp->lsda_encoding = lsda_encoding;
5562 newp->address_size = ptr_size;
5563 newp->code_alignment_factor = code_alignment_factor;
5564 newp->data_alignment_factor = data_alignment_factor;
5571 struct cieinfo *cie = cies;
5574 ? start - (ptrdiff_t) cie_id == cie->cie_offset
5575 : (ptrdiff_t) cie_id == cie->cie_offset)
5579 if (unlikely (cie == NULL))
5581 puts ("invalid CIE reference in FDE");
5585 /* Initialize from CIE data. */
5586 fde_encoding = cie->fde_encoding;
5587 lsda_encoding = cie->lsda_encoding;
5588 ptr_size = encoded_ptr_size (fde_encoding, cie->address_size);
5589 code_alignment_factor = cie->code_alignment_factor;
5590 data_alignment_factor = cie->data_alignment_factor;
5592 const unsigned char *base = readp;
5593 // XXX There are sometimes relocations for this value
5594 initial_location = read_addr_unaligned_inc (ptr_size, dbg, readp);
5595 Dwarf_Word address_range
5596 = read_addr_unaligned_inc (ptr_size, dbg, readp);
5598 /* pcrel for an FDE address is relative to the runtime
5599 address of the start_address field itself. Sign extend
5600 if necessary to make sure the calculation is done on the
5601 full 64 bit address even when initial_location only holds
5602 the lower 32 bits. */
5603 Dwarf_Addr pc_start = initial_location;
5605 pc_start = (uint64_t) (int32_t) pc_start;
5606 if ((fde_encoding & 0x70) == DW_EH_PE_pcrel)
5607 pc_start += ((uint64_t) shdr->sh_addr
5608 + (base - (const unsigned char *) data->d_buf)
5611 char *a = format_dwarf_addr (dwflmod, cie->address_size,
5612 pc_start, initial_location);
5613 printf ("\n [%6tx] FDE length=%" PRIu64 " cie=[%6tx]\n"
5614 " CIE_pointer: %" PRIu64 "\n"
5615 " initial_location: %s",
5616 offset, (uint64_t) unit_length,
5617 cie->cie_offset, (uint64_t) cie_id, a);
5619 if ((fde_encoding & 0x70) == DW_EH_PE_pcrel)
5621 vma_base = (((uint64_t) shdr->sh_offset
5622 + (base - (const unsigned char *) data->d_buf)
5623 + (uint64_t) initial_location)
5625 ? UINT64_C (0xffffffff)
5626 : UINT64_C (0xffffffffffffffff)));
5627 printf (gettext (" (offset: %#" PRIx64 ")"),
5628 (uint64_t) vma_base);
5631 printf ("\n address_range: %#" PRIx64,
5632 (uint64_t) address_range);
5633 if ((fde_encoding & 0x70) == DW_EH_PE_pcrel)
5634 printf (gettext (" (end offset: %#" PRIx64 ")"),
5635 ((uint64_t) vma_base + (uint64_t) address_range)
5637 ? UINT64_C (0xffffffff)
5638 : UINT64_C (0xffffffffffffffff)));
5641 if (cie->augmentation[0] == 'z')
5643 unsigned int augmentationlen;
5644 get_uleb128 (augmentationlen, readp);
5646 if (augmentationlen > (size_t) (dataend - readp))
5648 error (0, 0, gettext ("invalid augmentation length"));
5653 if (augmentationlen > 0)
5655 const char *hdr = "Augmentation data:";
5656 const char *cp = cie->augmentation + 1;
5662 uint64_t lsda_pointer;
5663 const unsigned char *p
5664 = read_encoded (lsda_encoding, &readp[u],
5665 &readp[augmentationlen],
5666 &lsda_pointer, dbg);
5669 %-26sLSDA pointer: %#" PRIx64 "\n"),
5676 while (u < augmentationlen)
5678 printf (" %-26s%#x\n", hdr, readp[u++]);
5683 readp += augmentationlen;
5687 /* Handle the initialization instructions. */
5688 if (ptr_size != 4 && ptr_size !=8)
5689 printf ("invalid CIE pointer size (%u), must be 4 or 8.\n", ptr_size);
5691 print_cfa_program (readp, cieend, vma_base, code_alignment_factor,
5692 data_alignment_factor, version, ptr_size,
5701 Dwfl_Module *dwflmod;
5706 unsigned int version;
5707 unsigned int addrsize;
5708 unsigned int offset_size;
5709 struct Dwarf_CU *cu;
5714 attr_callback (Dwarf_Attribute *attrp, void *arg)
5716 struct attrcb_args *cbargs = (struct attrcb_args *) arg;
5717 const int level = cbargs->level;
5719 unsigned int attr = dwarf_whatattr (attrp);
5720 if (unlikely (attr == 0))
5722 if (!cbargs->silent)
5723 error (0, 0, gettext ("cannot get attribute code: %s"),
5725 return DWARF_CB_ABORT;
5728 unsigned int form = dwarf_whatform (attrp);
5729 if (unlikely (form == 0))
5731 if (!cbargs->silent)
5732 error (0, 0, gettext ("cannot get attribute form: %s"),
5734 return DWARF_CB_ABORT;
5740 if (!cbargs->silent)
5743 if (unlikely (dwarf_formaddr (attrp, &addr) != 0))
5746 if (!cbargs->silent)
5747 error (0, 0, gettext ("cannot get attribute value: %s"),
5749 return DWARF_CB_ABORT;
5751 char *a = format_dwarf_addr (cbargs->dwflmod, cbargs->addrsize,
5753 printf (" %*s%-20s (%s) %s\n",
5754 (int) (level * 2), "", dwarf_attr_name (attr),
5755 dwarf_form_name (form), a);
5760 case DW_FORM_indirect:
5762 case DW_FORM_string:
5763 case DW_FORM_GNU_strp_alt:
5766 const char *str = dwarf_formstring (attrp);
5767 if (unlikely (str == NULL))
5769 printf (" %*s%-20s (%s) \"%s\"\n",
5770 (int) (level * 2), "", dwarf_attr_name (attr),
5771 dwarf_form_name (form), str);
5774 case DW_FORM_ref_addr:
5775 case DW_FORM_ref_udata:
5780 case DW_FORM_GNU_ref_alt:
5784 if (unlikely (dwarf_formref_die (attrp, &ref) == NULL))
5787 printf (" %*s%-20s (%s) [%6" PRIxMAX "]\n",
5788 (int) (level * 2), "", dwarf_attr_name (attr),
5789 dwarf_form_name (form), (uintmax_t) dwarf_dieoffset (&ref));
5792 case DW_FORM_ref_sig8:
5795 printf (" %*s%-20s (%s) {%6" PRIx64 "}\n",
5796 (int) (level * 2), "", dwarf_attr_name (attr),
5797 dwarf_form_name (form),
5798 (uint64_t) read_8ubyte_unaligned (attrp->cu->dbg, attrp->valp));
5801 case DW_FORM_sec_offset:
5807 case DW_FORM_data1:;
5809 if (unlikely (dwarf_formudata (attrp, &num) != 0))
5812 const char *valuestr = NULL;
5815 /* This case can take either a constant or a loclistptr. */
5816 case DW_AT_data_member_location:
5817 if (form != DW_FORM_sec_offset
5818 && (cbargs->version >= 4
5819 || (form != DW_FORM_data4 && form != DW_FORM_data8)))
5821 if (!cbargs->silent)
5822 printf (" %*s%-20s (%s) %" PRIxMAX "\n",
5823 (int) (level * 2), "", dwarf_attr_name (attr),
5824 dwarf_form_name (form), (uintmax_t) num);
5827 /* else fallthrough */
5829 /* These cases always take a loclistptr and no constant. */
5830 case DW_AT_location:
5831 case DW_AT_data_location:
5832 case DW_AT_vtable_elem_location:
5833 case DW_AT_string_length:
5834 case DW_AT_use_location:
5835 case DW_AT_frame_base:
5836 case DW_AT_return_addr:
5837 case DW_AT_static_link:
5838 case DW_AT_GNU_call_site_value:
5839 case DW_AT_GNU_call_site_data_value:
5840 case DW_AT_GNU_call_site_target:
5841 case DW_AT_GNU_call_site_target_clobbered:
5842 notice_listptr (section_loc, &known_loclistptr,
5843 cbargs->addrsize, cbargs->offset_size,
5845 if (!cbargs->silent)
5846 printf (" %*s%-20s (%s) location list [%6" PRIxMAX "]\n",
5847 (int) (level * 2), "", dwarf_attr_name (attr),
5848 dwarf_form_name (form), (uintmax_t) num);
5852 notice_listptr (section_ranges, &known_rangelistptr,
5853 cbargs->addrsize, cbargs->offset_size,
5855 if (!cbargs->silent)
5856 printf (" %*s%-20s (%s) range list [%6" PRIxMAX "]\n",
5857 (int) (level * 2), "", dwarf_attr_name (attr),
5858 dwarf_form_name (form), (uintmax_t) num);
5861 case DW_AT_language:
5862 valuestr = dwarf_lang_name (num);
5864 case DW_AT_encoding:
5865 valuestr = dwarf_encoding_name (num);
5867 case DW_AT_accessibility:
5868 valuestr = dwarf_access_name (num);
5870 case DW_AT_visibility:
5871 valuestr = dwarf_visibility_name (num);
5873 case DW_AT_virtuality:
5874 valuestr = dwarf_virtuality_name (num);
5876 case DW_AT_identifier_case:
5877 valuestr = dwarf_identifier_case_name (num);
5879 case DW_AT_calling_convention:
5880 valuestr = dwarf_calling_convention_name (num);
5883 valuestr = dwarf_inline_name (num);
5885 case DW_AT_ordering:
5886 valuestr = dwarf_ordering_name (num);
5888 case DW_AT_discr_list:
5889 valuestr = dwarf_discr_list_name (num);
5899 /* When highpc is in constant form it is relative to lowpc.
5900 In that case also show the address. */
5902 if (attr == DW_AT_high_pc && dwarf_highpc (cbargs->die, &highpc) == 0)
5904 char *a = format_dwarf_addr (cbargs->dwflmod, cbargs->addrsize,
5906 printf (" %*s%-20s (%s) %" PRIuMAX " (%s)\n",
5907 (int) (level * 2), "", dwarf_attr_name (attr),
5908 dwarf_form_name (form), (uintmax_t) num, a);
5913 Dwarf_Sword snum = 0;
5914 if (form == DW_FORM_sdata)
5915 if (unlikely (dwarf_formsdata (attrp, &snum) != 0))
5918 if (valuestr == NULL)
5920 printf (" %*s%-20s (%s)",
5921 (int) (level * 2), "", dwarf_attr_name (attr),
5922 dwarf_form_name (form));
5923 if (form == DW_FORM_sdata)
5924 printf (" %" PRIdMAX "\n", (intmax_t) snum);
5926 printf (" %" PRIuMAX "\n", (uintmax_t) num);
5930 printf (" %*s%-20s (%s) %s",
5931 (int) (level * 2), "", dwarf_attr_name (attr),
5932 dwarf_form_name (form), valuestr);
5933 if (form == DW_FORM_sdata)
5934 printf (" (%" PRIdMAX ")\n", (intmax_t) snum);
5936 printf (" (%" PRIuMAX ")\n", (uintmax_t) num);
5945 if (unlikely (dwarf_formflag (attrp, &flag) != 0))
5948 printf (" %*s%-20s (%s) %s\n",
5949 (int) (level * 2), "", dwarf_attr_name (attr),
5950 dwarf_form_name (form), nl_langinfo (flag ? YESSTR : NOSTR));
5953 case DW_FORM_flag_present:
5956 printf (" %*s%-20s (%s) %s\n",
5957 (int) (level * 2), "", dwarf_attr_name (attr),
5958 dwarf_form_name (form), nl_langinfo (YESSTR));
5961 case DW_FORM_exprloc:
5962 case DW_FORM_block4:
5963 case DW_FORM_block2:
5964 case DW_FORM_block1:
5969 if (unlikely (dwarf_formblock (attrp, &block) != 0))
5972 printf (" %*s%-20s (%s) ",
5973 (int) (level * 2), "", dwarf_attr_name (attr),
5974 dwarf_form_name (form));
5979 if (form != DW_FORM_exprloc)
5981 print_block (block.length, block.data);
5986 case DW_AT_location:
5987 case DW_AT_data_location:
5988 case DW_AT_data_member_location:
5989 case DW_AT_vtable_elem_location:
5990 case DW_AT_string_length:
5991 case DW_AT_use_location:
5992 case DW_AT_frame_base:
5993 case DW_AT_return_addr:
5994 case DW_AT_static_link:
5995 case DW_AT_allocated:
5996 case DW_AT_associated:
5997 case DW_AT_bit_size:
5998 case DW_AT_bit_offset:
5999 case DW_AT_bit_stride:
6000 case DW_AT_byte_size:
6001 case DW_AT_byte_stride:
6003 case DW_AT_lower_bound:
6004 case DW_AT_upper_bound:
6005 case DW_AT_GNU_call_site_value:
6006 case DW_AT_GNU_call_site_data_value:
6007 case DW_AT_GNU_call_site_target:
6008 case DW_AT_GNU_call_site_target_clobbered:
6010 print_ops (cbargs->dwflmod, cbargs->dbg,
6011 12 + level * 2, 12 + level * 2,
6012 cbargs->version, cbargs->addrsize, cbargs->offset_size,
6013 attrp->cu, block.length, block.data);
6021 printf (" %*s%-20s (form: %#x) ???\n",
6022 (int) (level * 2), "", dwarf_attr_name (attr),
6031 print_debug_units (Dwfl_Module *dwflmod,
6032 Ebl *ebl, GElf_Ehdr *ehdr,
6033 Elf_Scn *scn, GElf_Shdr *shdr,
6034 Dwarf *dbg, bool debug_types)
6036 const bool silent = !(print_debug_sections & section_info);
6037 const char *secname = section_name (ebl, ehdr, shdr);
6041 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n [Offset]\n"),
6042 elf_ndxscn (scn), secname, (uint64_t) shdr->sh_offset);
6044 /* If the section is empty we don't have to do anything. */
6045 if (!silent && shdr->sh_size == 0)
6049 Dwarf_Die *dies = (Dwarf_Die *) xmalloc (maxdies * sizeof (Dwarf_Die));
6051 Dwarf_Off offset = 0;
6053 /* New compilation unit. */
6056 Dwarf_Off abbroffset;
6063 if (dwarf_next_unit (dbg, offset, &nextcu, &cuhl, &version,
6064 &abbroffset, &addrsize, &offsize,
6065 debug_types ? &typesig : NULL,
6066 debug_types ? &typeoff : NULL) != 0)
6072 printf (gettext (" Type unit at offset %" PRIu64 ":\n"
6073 " Version: %" PRIu16 ", Abbreviation section offset: %"
6074 PRIu64 ", Address size: %" PRIu8
6075 ", Offset size: %" PRIu8
6076 "\n Type signature: %#" PRIx64
6077 ", Type offset: %#" PRIx64 "\n"),
6078 (uint64_t) offset, version, abbroffset, addrsize, offsize,
6079 typesig, (uint64_t) typeoff);
6081 printf (gettext (" Compilation unit at offset %" PRIu64 ":\n"
6082 " Version: %" PRIu16 ", Abbreviation section offset: %"
6083 PRIu64 ", Address size: %" PRIu8
6084 ", Offset size: %" PRIu8 "\n"),
6085 (uint64_t) offset, version, abbroffset, addrsize, offsize);
6088 struct attrcb_args args =
6094 .addrsize = addrsize,
6095 .offset_size = offsize
6102 if (unlikely ((debug_types ? dwarf_offdie_types : dwarf_offdie)
6103 (dbg, offset, &dies[level]) == NULL))
6106 error (0, 0, gettext ("cannot get DIE at offset %" PRIu64
6107 " in section '%s': %s"),
6108 (uint64_t) offset, secname, dwarf_errmsg (-1));
6112 args.cu = dies[0].cu;
6116 offset = dwarf_dieoffset (&dies[level]);
6117 if (unlikely (offset == ~0ul))
6120 error (0, 0, gettext ("cannot get DIE offset: %s"),
6125 int tag = dwarf_tag (&dies[level]);
6126 if (unlikely (tag == DW_TAG_invalid))
6129 error (0, 0, gettext ("cannot get tag of DIE at offset %" PRIu64
6130 " in section '%s': %s"),
6131 (uint64_t) offset, secname, dwarf_errmsg (-1));
6136 printf (" [%6" PRIx64 "] %*s%s\n",
6137 (uint64_t) offset, (int) (level * 2), "",
6138 dwarf_tag_name (tag));
6140 /* Print the attribute values. */
6142 args.die = &dies[level];
6143 (void) dwarf_getattrs (&dies[level], attr_callback, &args, 0);
6145 /* Make room for the next level's DIE. */
6146 if (level + 1 == maxdies)
6147 dies = (Dwarf_Die *) xrealloc (dies,
6149 * sizeof (Dwarf_Die));
6151 int res = dwarf_child (&dies[level], &dies[level + 1]);
6154 while ((res = dwarf_siblingof (&dies[level], &dies[level])) == 1)
6158 if (unlikely (res == -1))
6161 error (0, 0, gettext ("cannot get next DIE: %s\n"),
6166 else if (unlikely (res < 0))
6169 error (0, 0, gettext ("cannot get next DIE: %s"),
6187 print_debug_info_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
6188 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6190 print_debug_units (dwflmod, ebl, ehdr, scn, shdr, dbg, false);
6194 print_debug_types_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
6195 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6197 print_debug_units (dwflmod, ebl, ehdr, scn, shdr, dbg, true);
6202 print_decoded_line_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
6203 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6206 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n\n"),
6207 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
6208 (uint64_t) shdr->sh_offset);
6211 = elf_getident (ebl->elf, NULL)[EI_CLASS] == ELFCLASS32 ? 4 : 8;
6214 Dwarf_Off ncuoffset = 0;
6216 while (dwarf_nextcu (dbg, cuoffset = ncuoffset, &ncuoffset, &hsize,
6217 NULL, NULL, NULL) == 0)
6220 if (dwarf_offdie (dbg, cuoffset + hsize, &cudie) == NULL)
6225 if (dwarf_getsrclines (&cudie, &lines, &nlines) != 0)
6228 printf (" CU [%" PRIx64 "] %s\n",
6229 dwarf_dieoffset (&cudie), dwarf_diename (&cudie));
6230 printf (" line:col SBPE* disc isa op address"
6231 " (Statement Block Prologue Epilogue *End)\n");
6232 const char *last_file = "";
6233 for (size_t n = 0; n < nlines; n++)
6235 Dwarf_Line *line = dwarf_onesrcline (lines, n);
6236 Dwarf_Word mtime, length;
6237 const char *file = dwarf_linesrc (line, &mtime, &length);
6238 if (strcmp (last_file, file) != 0)
6240 printf (" %s (mtime: %" PRIu64 ", length: %" PRIu64 ")\n",
6241 file, mtime, length);
6246 bool statement, endseq, block, prologue_end, epilogue_begin;
6247 unsigned int lineop, isa, disc;
6249 dwarf_lineaddr (line, &address);
6250 dwarf_lineno (line, &lineno);
6251 dwarf_linecol (line, &colno);
6252 dwarf_lineop_index (line, &lineop);
6253 dwarf_linebeginstatement (line, &statement);
6254 dwarf_lineendsequence (line, &endseq);
6255 dwarf_lineblock (line, &block);
6256 dwarf_lineprologueend (line, &prologue_end);
6257 dwarf_lineepiloguebegin (line, &epilogue_begin);
6258 dwarf_lineisa (line, &isa);
6259 dwarf_linediscriminator (line, &disc);
6261 /* End sequence is special, it is one byte past. */
6262 char *a = format_dwarf_addr (dwflmod, address_size,
6263 address - (endseq ? 1 : 0), address);
6264 printf (" %4d:%-3d %c%c%c%c%c %4d %3d %2d %s\n",
6266 (statement ? 'S' : ' '),
6267 (block ? 'B' : ' '),
6268 (prologue_end ? 'P' : ' '),
6269 (epilogue_begin ? 'E' : ' '),
6270 (endseq ? '*' : ' '),
6271 disc, isa, lineop, a);
6282 print_debug_line_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
6283 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6287 print_decoded_line_section (dwflmod, ebl, ehdr, scn, shdr, dbg);
6292 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
6293 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
6294 (uint64_t) shdr->sh_offset);
6296 if (shdr->sh_size == 0)
6299 /* There is no functionality in libdw to read the information in the
6300 way it is represented here. Hardcode the decoder. */
6301 Elf_Data *data = dbg->sectiondata[IDX_debug_line];
6302 if (unlikely (data == NULL || data->d_buf == NULL))
6304 error (0, 0, gettext ("cannot get line data section data: %s"),
6309 const unsigned char *linep = (const unsigned char *) data->d_buf;
6310 const unsigned char *lineendp;
6313 < (lineendp = (const unsigned char *) data->d_buf + data->d_size))
6315 size_t start_offset = linep - (const unsigned char *) data->d_buf;
6317 printf (gettext ("\nTable at offset %Zu:\n"), start_offset);
6319 Dwarf_Word unit_length = read_4ubyte_unaligned_inc (dbg, linep);
6320 unsigned int length = 4;
6321 if (unlikely (unit_length == 0xffffffff))
6323 if (unlikely (linep + 8 > lineendp))
6326 error (0, 0, gettext ("invalid data in section [%zu] '%s'"),
6327 elf_ndxscn (scn), section_name (ebl, ehdr, shdr));
6330 unit_length = read_8ubyte_unaligned_inc (dbg, linep);
6334 /* Check whether we have enough room in the section. */
6335 if (unit_length < 2 + length + 5 * 1
6336 || unlikely (linep + unit_length > lineendp))
6338 lineendp = linep + unit_length;
6340 /* The next element of the header is the version identifier. */
6341 uint_fast16_t version = read_2ubyte_unaligned_inc (dbg, linep);
6343 /* Next comes the header length. */
6344 Dwarf_Word header_length;
6346 header_length = read_4ubyte_unaligned_inc (dbg, linep);
6348 header_length = read_8ubyte_unaligned_inc (dbg, linep);
6349 //const unsigned char *header_start = linep;
6351 /* Next the minimum instruction length. */
6352 uint_fast8_t minimum_instr_len = *linep++;
6354 /* Next the maximum operations per instruction, in version 4 format. */
6355 uint_fast8_t max_ops_per_instr = version < 4 ? 1 : *linep++;
6357 /* Then the flag determining the default value of the is_stmt
6359 uint_fast8_t default_is_stmt = *linep++;
6361 /* Now the line base. */
6362 int_fast8_t line_base = *((const int_fast8_t *) linep);
6365 /* And the line range. */
6366 uint_fast8_t line_range = *linep++;
6368 /* The opcode base. */
6369 uint_fast8_t opcode_base = *linep++;
6371 /* Print what we got so far. */
6372 printf (gettext ("\n"
6373 " Length: %" PRIu64 "\n"
6374 " DWARF version: %" PRIuFAST16 "\n"
6375 " Prologue length: %" PRIu64 "\n"
6376 " Minimum instruction length: %" PRIuFAST8 "\n"
6377 " Maximum operations per instruction: %" PRIuFAST8 "\n"
6378 " Initial value if '%s': %" PRIuFAST8 "\n"
6379 " Line base: %" PRIdFAST8 "\n"
6380 " Line range: %" PRIuFAST8 "\n"
6381 " Opcode base: %" PRIuFAST8 "\n"
6384 (uint64_t) unit_length, version, (uint64_t) header_length,
6385 minimum_instr_len, max_ops_per_instr,
6386 "is_stmt", default_is_stmt, line_base,
6387 line_range, opcode_base);
6389 if (unlikely (linep + opcode_base - 1 >= lineendp))
6393 gettext ("invalid data at offset %tu in section [%zu] '%s'"),
6394 linep - (const unsigned char *) data->d_buf,
6395 elf_ndxscn (scn), section_name (ebl, ehdr, shdr));
6399 int opcode_base_l10 = 1;
6400 unsigned int tmp = opcode_base;
6406 const uint8_t *standard_opcode_lengths = linep - 1;
6407 for (uint_fast8_t cnt = 1; cnt < opcode_base; ++cnt)
6408 printf (ngettext (" [%*" PRIuFAST8 "] %hhu argument\n",
6409 " [%*" PRIuFAST8 "] %hhu arguments\n",
6410 (int) linep[cnt - 1]),
6411 opcode_base_l10, cnt, linep[cnt - 1]);
6412 linep += opcode_base - 1;
6413 if (unlikely (linep >= lineendp))
6416 puts (gettext ("\nDirectory table:"));
6419 unsigned char *endp = memchr (linep, '\0', lineendp - linep);
6420 if (unlikely (endp == NULL))
6423 printf (" %s\n", (char *) linep);
6427 /* Skip the final NUL byte. */
6430 if (unlikely (linep >= lineendp))
6432 puts (gettext ("\nFile name table:\n"
6433 " Entry Dir Time Size Name"));
6434 for (unsigned int cnt = 1; *linep != 0; ++cnt)
6436 /* First comes the file name. */
6437 char *fname = (char *) linep;
6438 unsigned char *endp = memchr (fname, '\0', lineendp - linep);
6439 if (unlikely (endp == NULL))
6443 /* Then the index. */
6444 unsigned int diridx;
6445 get_uleb128 (diridx, linep);
6447 /* Next comes the modification time. */
6449 get_uleb128 (mtime, linep);
6451 /* Finally the length of the file. */
6453 get_uleb128 (fsize, linep);
6455 printf (" %-5u %-5u %-9u %-9u %s\n",
6456 cnt, diridx, mtime, fsize, fname);
6458 /* Skip the final NUL byte. */
6461 puts (gettext ("\nLine number statements:"));
6462 Dwarf_Word address = 0;
6463 unsigned int op_index = 0;
6465 uint_fast8_t is_stmt = default_is_stmt;
6467 /* Default address value, in case we do not find the CU. */
6469 = elf_getident (ebl->elf, NULL)[EI_CLASS] == ELFCLASS32 ? 4 : 8;
6471 /* Determine the CU this block is for. */
6473 Dwarf_Off ncuoffset = 0;
6475 while (dwarf_nextcu (dbg, cuoffset = ncuoffset, &ncuoffset, &hsize,
6476 NULL, NULL, NULL) == 0)
6479 if (dwarf_offdie (dbg, cuoffset + hsize, &cudie) == NULL)
6481 Dwarf_Attribute stmt_list;
6482 if (dwarf_attr (&cudie, DW_AT_stmt_list, &stmt_list) == NULL)
6485 if (dwarf_formudata (&stmt_list, &lineoff) != 0)
6487 if (lineoff == start_offset)
6490 address_size = cudie.cu->address_size;
6495 /* Apply the "operation advance" from a special opcode
6496 or DW_LNS_advance_pc (as per DWARF4 6.2.5.1). */
6497 unsigned int op_addr_advance;
6499 inline void advance_pc (unsigned int op_advance)
6501 op_addr_advance = minimum_instr_len * ((op_index + op_advance)
6502 / max_ops_per_instr);
6503 address += op_advance;
6504 show_op_index = (op_index > 0 ||
6505 (op_index + op_advance) % max_ops_per_instr > 0);
6506 op_index = (op_index + op_advance) % max_ops_per_instr;
6509 if (max_ops_per_instr == 0)
6512 gettext ("invalid maximum operations per instruction is zero"));
6517 while (linep < lineendp)
6519 size_t offset = linep - (const unsigned char *) data->d_buf;
6523 /* Read the opcode. */
6524 unsigned int opcode = *linep++;
6526 printf (" [%6" PRIx64 "]", (uint64_t)offset);
6527 /* Is this a special opcode? */
6528 if (likely (opcode >= opcode_base))
6530 if (unlikely (line_range == 0))
6533 /* Yes. Handling this is quite easy since the opcode value
6536 opcode = (desired line increment - line_base)
6537 + (line_range * address advance) + opcode_base
6539 int line_increment = (line_base
6540 + (opcode - opcode_base) % line_range);
6542 /* Perform the increments. */
6543 line += line_increment;
6544 advance_pc ((opcode - opcode_base) / line_range);
6546 char *a = format_dwarf_addr (dwflmod, 0, address, address);
6549 special opcode %u: address+%u = %s, op_index = %u, line%+d = %zu\n"),
6550 opcode, op_addr_advance, a, op_index,
6551 line_increment, line);
6554 special opcode %u: address+%u = %s, line%+d = %zu\n"),
6555 opcode, op_addr_advance, a, line_increment, line);
6558 else if (opcode == 0)
6560 /* This an extended opcode. */
6561 if (unlikely (linep + 2 > lineendp))
6565 unsigned int len = *linep++;
6567 if (unlikely (linep + len > lineendp))
6570 /* The sub-opcode. */
6573 printf (gettext (" extended opcode %u: "), opcode);
6577 case DW_LNE_end_sequence:
6578 puts (gettext (" end of sequence"));
6580 /* Reset the registers we care about. */
6584 is_stmt = default_is_stmt;
6587 case DW_LNE_set_address:
6589 if (address_size == 4)
6590 address = read_4ubyte_unaligned_inc (dbg, linep);
6592 address = read_8ubyte_unaligned_inc (dbg, linep);
6594 char *a = format_dwarf_addr (dwflmod, 0, address, address);
6595 printf (gettext (" set address to %s\n"), a);
6600 case DW_LNE_define_file:
6602 char *fname = (char *) linep;
6603 unsigned char *endp = memchr (linep, '\0',
6605 if (unlikely (endp == NULL))
6609 unsigned int diridx;
6610 get_uleb128 (diridx, linep);
6612 get_uleb128 (mtime, linep);
6613 Dwarf_Word filelength;
6614 get_uleb128 (filelength, linep);
6617 define new file: dir=%u, mtime=%" PRIu64 ", length=%" PRIu64 ", name=%s\n"),
6618 diridx, (uint64_t) mtime, (uint64_t) filelength,
6623 case DW_LNE_set_discriminator:
6624 /* Takes one ULEB128 parameter, the discriminator. */
6625 if (unlikely (standard_opcode_lengths[opcode] != 1))
6628 get_uleb128 (u128, linep);
6629 printf (gettext (" set discriminator to %u\n"), u128);
6633 /* Unknown, ignore it. */
6634 puts (gettext (" unknown opcode"));
6639 else if (opcode <= DW_LNS_set_isa)
6641 /* This is a known standard opcode. */
6645 /* Takes no argument. */
6646 puts (gettext (" copy"));
6649 case DW_LNS_advance_pc:
6650 /* Takes one uleb128 parameter which is added to the
6652 get_uleb128 (u128, linep);
6655 char *a = format_dwarf_addr (dwflmod, 0, address, address);
6658 advance address by %u to %s, op_index to %u\n"),
6659 op_addr_advance, a, op_index);
6661 printf (gettext (" advance address by %u to %s\n"),
6662 op_addr_advance, a);
6667 case DW_LNS_advance_line:
6668 /* Takes one sleb128 parameter which is added to the
6670 get_sleb128 (s128, linep);
6673 advance line by constant %d to %" PRId64 "\n"),
6674 s128, (int64_t) line);
6677 case DW_LNS_set_file:
6678 /* Takes one uleb128 parameter which is stored in file. */
6679 get_uleb128 (u128, linep);
6680 printf (gettext (" set file to %" PRIu64 "\n"),
6684 case DW_LNS_set_column:
6685 /* Takes one uleb128 parameter which is stored in column. */
6686 if (unlikely (standard_opcode_lengths[opcode] != 1))
6689 get_uleb128 (u128, linep);
6690 printf (gettext (" set column to %" PRIu64 "\n"),
6694 case DW_LNS_negate_stmt:
6695 /* Takes no argument. */
6696 is_stmt = 1 - is_stmt;
6697 printf (gettext (" set '%s' to %" PRIuFAST8 "\n"),
6698 "is_stmt", is_stmt);
6701 case DW_LNS_set_basic_block:
6702 /* Takes no argument. */
6703 puts (gettext (" set basic block flag"));
6706 case DW_LNS_const_add_pc:
6707 /* Takes no argument. */
6709 if (unlikely (line_range == 0))
6712 advance_pc ((255 - opcode_base) / line_range);
6714 char *a = format_dwarf_addr (dwflmod, 0, address, address);
6717 advance address by constant %u to %s, op_index to %u\n"),
6718 op_addr_advance, a, op_index);
6721 advance address by constant %u to %s\n"),
6722 op_addr_advance, a);
6727 case DW_LNS_fixed_advance_pc:
6728 /* Takes one 16 bit parameter which is added to the
6730 if (unlikely (standard_opcode_lengths[opcode] != 1))
6733 u128 = read_2ubyte_unaligned_inc (dbg, linep);
6737 char *a = format_dwarf_addr (dwflmod, 0, address, address);
6739 advance address by fixed value %u to %s\n"),
6745 case DW_LNS_set_prologue_end:
6746 /* Takes no argument. */
6747 puts (gettext (" set prologue end flag"));
6750 case DW_LNS_set_epilogue_begin:
6751 /* Takes no argument. */
6752 puts (gettext (" set epilogue begin flag"));
6755 case DW_LNS_set_isa:
6756 /* Takes one uleb128 parameter which is stored in isa. */
6757 if (unlikely (standard_opcode_lengths[opcode] != 1))
6760 get_uleb128 (u128, linep);
6761 printf (gettext (" set isa to %u\n"), u128);
6767 /* This is a new opcode the generator but not we know about.
6768 Read the parameters associated with it but then discard
6769 everything. Read all the parameters for this opcode. */
6770 printf (ngettext (" unknown opcode with %" PRIu8 " parameter:",
6771 " unknown opcode with %" PRIu8 " parameters:",
6772 standard_opcode_lengths[opcode]),
6773 standard_opcode_lengths[opcode]);
6774 for (int n = standard_opcode_lengths[opcode]; n > 0; --n)
6776 get_uleb128 (u128, linep);
6777 if (n != standard_opcode_lengths[opcode])
6778 putc_unlocked (',', stdout);
6779 printf (" %u", u128);
6782 /* Next round, ignore this opcode. */
6788 /* There must only be one data block. */
6789 assert (elf_getdata (scn, data) == NULL);
6794 print_debug_loc_section (Dwfl_Module *dwflmod,
6795 Ebl *ebl, GElf_Ehdr *ehdr,
6796 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6798 Elf_Data *data = dbg->sectiondata[IDX_debug_loc];
6800 if (unlikely (data == NULL))
6802 error (0, 0, gettext ("cannot get .debug_loc content: %s"),
6808 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
6809 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
6810 (uint64_t) shdr->sh_offset);
6812 sort_listptr (&known_loclistptr, "loclistptr");
6813 size_t listptr_idx = 0;
6815 uint_fast8_t address_size = ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8;
6816 uint_fast8_t offset_size = 4;
6819 struct Dwarf_CU *cu = NULL;
6820 Dwarf_Addr base = 0;
6821 unsigned char *readp = data->d_buf;
6822 unsigned char *const endp = (unsigned char *) data->d_buf + data->d_size;
6823 while (readp < endp)
6825 ptrdiff_t offset = readp - (unsigned char *) data->d_buf;
6827 if (first && skip_listptr_hole (&known_loclistptr, &listptr_idx,
6828 &address_size, &offset_size, &base,
6829 &cu, offset, &readp, endp))
6832 if (unlikely (data->d_size - offset < (size_t) address_size * 2))
6834 printf (gettext (" [%6tx] <INVALID DATA>\n"), offset);
6840 if (address_size == 8)
6842 begin = read_8ubyte_unaligned_inc (dbg, readp);
6843 end = read_8ubyte_unaligned_inc (dbg, readp);
6847 begin = read_4ubyte_unaligned_inc (dbg, readp);
6848 end = read_4ubyte_unaligned_inc (dbg, readp);
6849 if (begin == (Dwarf_Addr) (uint32_t) -1)
6850 begin = (Dwarf_Addr) -1l;
6853 if (begin == (Dwarf_Addr) -1l) /* Base address entry. */
6855 char *b = format_dwarf_addr (dwflmod, address_size, end, end);
6856 printf (gettext (" [%6tx] base address %s\n"), offset, b);
6860 else if (begin == 0 && end == 0) /* End of list entry. */
6863 printf (gettext (" [%6tx] empty list\n"), offset);
6868 /* We have a location expression entry. */
6869 uint_fast16_t len = read_2ubyte_unaligned_inc (dbg, readp);
6871 char *b = format_dwarf_addr (dwflmod, address_size, base + begin,
6873 char *e = format_dwarf_addr (dwflmod, address_size, base + end,
6876 if (first) /* First entry in a list. */
6877 printf (gettext (" [%6tx] %s..%s"), offset, b, e);
6879 printf (gettext (" %s..%s"), b, e);
6884 if (endp - readp <= (ptrdiff_t) len)
6886 fputs (gettext (" <INVALID DATA>\n"), stdout);
6890 print_ops (dwflmod, dbg, 1, 18 + (address_size * 4),
6891 3 /*XXX*/, address_size, offset_size, cu, len, readp);
6904 struct mac_culist *next;
6909 mac_compare (const void *p1, const void *p2)
6911 struct mac_culist *m1 = (struct mac_culist *) p1;
6912 struct mac_culist *m2 = (struct mac_culist *) p2;
6914 if (m1->offset < m2->offset)
6916 if (m1->offset > m2->offset)
6923 print_debug_macinfo_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
6924 Ebl *ebl, GElf_Ehdr *ehdr,
6925 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6928 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
6929 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
6930 (uint64_t) shdr->sh_offset);
6931 putc_unlocked ('\n', stdout);
6933 /* There is no function in libdw to iterate over the raw content of
6934 the section but it is easy enough to do. */
6935 Elf_Data *data = dbg->sectiondata[IDX_debug_macinfo];
6936 if (unlikely (data == NULL || data->d_buf == NULL))
6938 error (0, 0, gettext ("cannot get macro information section data: %s"),
6943 /* Get the source file information for all CUs. */
6947 struct mac_culist *culist = NULL;
6949 while (dwarf_nextcu (dbg, offset = ncu, &ncu, &hsize, NULL, NULL, NULL) == 0)
6952 if (dwarf_offdie (dbg, offset + hsize, &cudie) == NULL)
6955 Dwarf_Attribute attr;
6956 if (dwarf_attr (&cudie, DW_AT_macro_info, &attr) == NULL)
6960 if (dwarf_formudata (&attr, &macoff) != 0)
6963 struct mac_culist *newp = (struct mac_culist *) alloca (sizeof (*newp));
6965 newp->offset = macoff;
6967 newp->next = culist;
6972 /* Convert the list into an array for easier consumption. */
6973 struct mac_culist *cus = (struct mac_culist *) alloca ((nculist + 1)
6976 cus[nculist].offset = data->d_size;
6979 for (size_t cnt = nculist - 1; culist != NULL; --cnt)
6981 assert (cnt < nculist);
6983 culist = culist->next;
6986 /* Sort the array according to the offset in the .debug_macinfo
6987 section. Note we keep the sentinel at the end. */
6988 qsort (cus, nculist, sizeof (*cus), mac_compare);
6991 const unsigned char *readp = (const unsigned char *) data->d_buf;
6992 const unsigned char *readendp = readp + data->d_size;
6995 while (readp < readendp)
6997 unsigned int opcode = *readp++;
6999 unsigned int u128_2;
7000 const unsigned char *endp;
7004 case DW_MACINFO_define:
7005 case DW_MACINFO_undef:
7006 case DW_MACINFO_vendor_ext:
7007 /* For the first two opcodes the parameters are
7011 We can treat these cases together. */
7012 get_uleb128 (u128, readp);
7014 endp = memchr (readp, '\0', readendp - readp);
7015 if (unlikely (endp == NULL))
7018 %*s*** non-terminated string at end of section"),
7023 if (opcode == DW_MACINFO_define)
7024 printf ("%*s#define %s, line %u\n",
7025 level, "", (char *) readp, u128);
7026 else if (opcode == DW_MACINFO_undef)
7027 printf ("%*s#undef %s, line %u\n",
7028 level, "", (char *) readp, u128);
7030 printf (" #vendor-ext %s, number %u\n", (char *) readp, u128);
7035 case DW_MACINFO_start_file:
7036 /* The two parameters are line and file index, in this order. */
7037 get_uleb128 (u128, readp);
7038 get_uleb128 (u128_2, readp);
7040 /* Find the CU DIE for this file. */
7041 size_t macoff = readp - (const unsigned char *) data->d_buf;
7042 const char *fname = "???";
7043 if (macoff >= cus[0].offset)
7045 while (macoff >= cus[1].offset)
7048 if (cus[0].files == NULL
7049 && dwarf_getsrcfiles (&cus[0].die, &cus[0].files, NULL) != 0)
7050 cus[0].files = (Dwarf_Files *) -1l;
7052 if (cus[0].files != (Dwarf_Files *) -1l)
7053 fname = (dwarf_filesrc (cus[0].files, u128_2, NULL, NULL)
7057 printf ("%*sstart_file %u, [%u] %s\n",
7058 level, "", u128, u128_2, fname);
7062 case DW_MACINFO_end_file:
7064 printf ("%*send_file\n", level, "");
7065 /* Nothing more to do. */
7069 // XXX gcc seems to generate files with a trailing zero.
7070 if (unlikely (opcode != 0 || readp != readendp))
7071 printf ("%*s*** invalid opcode %u\n", level, "", opcode);
7079 print_debug_macro_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
7080 Ebl *ebl, GElf_Ehdr *ehdr,
7081 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
7084 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
7085 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
7086 (uint64_t) shdr->sh_offset);
7087 putc_unlocked ('\n', stdout);
7089 Elf_Data *data = dbg->sectiondata[IDX_debug_macro];
7090 if (unlikely (data == NULL || data->d_buf == NULL))
7092 error (0, 0, gettext ("cannot get macro information section data: %s"),
7097 /* Get the source file information for all CUs. Uses same
7098 datastructure as macinfo. But uses offset field to directly
7099 match .debug_line offset. And just stored in a list. */
7103 struct mac_culist *culist = NULL;
7105 while (dwarf_nextcu (dbg, offset = ncu, &ncu, &hsize, NULL, NULL, NULL) == 0)
7108 if (dwarf_offdie (dbg, offset + hsize, &cudie) == NULL)
7111 Dwarf_Attribute attr;
7112 if (dwarf_attr (&cudie, DW_AT_stmt_list, &attr) == NULL)
7116 if (dwarf_formudata (&attr, &lineoff) != 0)
7119 struct mac_culist *newp = (struct mac_culist *) alloca (sizeof (*newp));
7121 newp->offset = lineoff;
7123 newp->next = culist;
7128 const unsigned char *readp = (const unsigned char *) data->d_buf;
7129 const unsigned char *readendp = readp + data->d_size;
7131 while (readp < readendp)
7133 printf (gettext (" Offset: 0x%" PRIx64 "\n"),
7134 (uint64_t) (readp - (const unsigned char *) data->d_buf));
7136 // Header, 2 byte version, 1 byte flag, optional .debug_line offset,
7137 // optional vendor extension macro entry table.
7138 if (readp + 2 > readendp)
7141 error (0, 0, gettext ("invalid data"));
7144 const uint16_t vers = read_2ubyte_unaligned_inc (dbg, readp);
7145 printf (gettext (" Version: %" PRIu16 "\n"), vers);
7147 // Version 4 is the GNU extension for DWARF4. DWARF5 will use version
7148 // 5 when it gets standardized.
7151 printf (gettext (" unknown version, cannot parse section\n"));
7155 if (readp + 1 > readendp)
7157 const unsigned char flag = *readp++;
7158 printf (gettext (" Flag: 0x%" PRIx8 "\n"), flag);
7160 unsigned int offset_len = (flag & 0x01) ? 8 : 4;
7161 printf (gettext (" Offset length: %" PRIu8 "\n"), offset_len);
7162 Dwarf_Off line_offset = -1;
7165 if (offset_len == 8)
7166 line_offset = read_8ubyte_unaligned_inc (dbg, readp);
7168 line_offset = read_4ubyte_unaligned_inc (dbg, readp);
7169 printf (gettext (" .debug_line offset: 0x%" PRIx64 "\n"),
7173 const unsigned char *vendor[DW_MACRO_GNU_hi_user - DW_MACRO_GNU_lo_user];
7174 memset (vendor, 0, sizeof vendor);
7177 // 1 byte length, for each item, 1 byte opcode, uleb128 number
7178 // of arguments, for each argument 1 byte form code.
7179 if (readp + 1 > readendp)
7181 unsigned int tlen = *readp++;
7182 printf (gettext (" extension opcode table, %" PRIu8 " items:\n"),
7184 for (unsigned int i = 0; i < tlen; i++)
7186 if (readp + 1 > readendp)
7188 unsigned int opcode = *readp++;
7189 printf (gettext (" [%" PRIx8 "]"), opcode);
7190 if (opcode < DW_MACRO_GNU_lo_user
7191 || opcode > DW_MACRO_GNU_hi_user)
7193 // Record the start of description for this vendor opcode.
7194 // uleb128 nr args, 1 byte per arg form.
7195 vendor[opcode - DW_MACRO_GNU_lo_user] = readp;
7196 if (readp + 1 > readendp)
7198 unsigned int args = *readp++;
7201 printf (gettext (" %" PRIu8 " arguments:"), args);
7204 if (readp + 1 > readendp)
7206 unsigned int form = *readp++;
7207 printf (" %s", dwarf_form_string (form));
7208 if (form != DW_FORM_data1
7209 && form != DW_FORM_data2
7210 && form != DW_FORM_data4
7211 && form != DW_FORM_data8
7212 && form != DW_FORM_sdata
7213 && form != DW_FORM_udata
7214 && form != DW_FORM_block
7215 && form != DW_FORM_block1
7216 && form != DW_FORM_block2
7217 && form != DW_FORM_block4
7218 && form != DW_FORM_flag
7219 && form != DW_FORM_string
7220 && form != DW_FORM_strp
7221 && form != DW_FORM_sec_offset)
7225 putchar_unlocked (',');
7229 printf (gettext (" no arguments."));
7230 putchar_unlocked ('\n');
7233 putchar_unlocked ('\n');
7236 if (readp + 1 > readendp)
7238 unsigned int opcode = *readp++;
7242 unsigned int u128_2;
7243 const unsigned char *endp;
7248 case DW_MACRO_GNU_start_file:
7249 get_uleb128 (u128, readp);
7250 get_uleb128 (u128_2, readp);
7252 /* Find the CU DIE that matches this line offset. */
7253 const char *fname = "???";
7254 if (line_offset != (Dwarf_Off) -1)
7256 struct mac_culist *cu = culist;
7257 while (cu != NULL && line_offset != cu->offset)
7261 if (cu->files == NULL
7262 && dwarf_getsrcfiles (&cu->die, &cu->files,
7264 cu->files = (Dwarf_Files *) -1l;
7266 if (cu->files != (Dwarf_Files *) -1l)
7267 fname = (dwarf_filesrc (cu->files, u128_2,
7268 NULL, NULL) ?: "???");
7271 printf ("%*sstart_file %u, [%u] %s\n",
7272 level, "", u128, u128_2, fname);
7276 case DW_MACRO_GNU_end_file:
7278 printf ("%*send_file\n", level, "");
7281 case DW_MACRO_GNU_define:
7282 get_uleb128 (u128, readp);
7283 endp = memchr (readp, '\0', readendp - readp);
7286 printf ("%*s#define %s, line %u\n",
7287 level, "", readp, u128);
7291 case DW_MACRO_GNU_undef:
7292 get_uleb128 (u128, readp);
7293 endp = memchr (readp, '\0', readendp - readp);
7296 printf ("%*s#undef %s, line %u\n",
7297 level, "", readp, u128);
7301 case DW_MACRO_GNU_define_indirect:
7302 get_uleb128 (u128, readp);
7303 if (readp + offset_len > readendp)
7305 if (offset_len == 8)
7306 off = read_8ubyte_unaligned_inc (dbg, readp);
7308 off = read_4ubyte_unaligned_inc (dbg, readp);
7309 printf ("%*s#define %s, line %u (indirect)\n",
7310 level, "", dwarf_getstring (dbg, off, NULL), u128);
7313 case DW_MACRO_GNU_undef_indirect:
7314 get_uleb128 (u128, readp);
7315 if (readp + offset_len > readendp)
7317 if (offset_len == 8)
7318 off = read_8ubyte_unaligned_inc (dbg, readp);
7320 off = read_4ubyte_unaligned_inc (dbg, readp);
7321 printf ("%*s#undef %s, line %u (indirect)\n",
7322 level, "", dwarf_getstring (dbg, off, NULL), u128);
7325 case DW_MACRO_GNU_transparent_include:
7326 if (readp + offset_len > readendp)
7328 if (offset_len == 8)
7329 off = read_8ubyte_unaligned_inc (dbg, readp);
7331 off = read_4ubyte_unaligned_inc (dbg, readp);
7332 printf ("%*s#include offset 0x%" PRIx64 "\n",
7337 printf ("%*svendor opcode 0x%" PRIx8, level, "", opcode);
7338 if (opcode < DW_MACRO_GNU_lo_user
7339 || opcode > DW_MACRO_GNU_lo_user
7340 || vendor[opcode - DW_MACRO_GNU_lo_user] == NULL)
7343 const unsigned char *op_desc;
7344 op_desc = vendor[opcode - DW_MACRO_GNU_lo_user];
7346 // Just skip the arguments, we cannot really interpret them,
7347 // but print as much as we can.
7348 unsigned int args = *op_desc++;
7351 unsigned int form = *op_desc++;
7356 if (readp + 1 > readendp)
7359 printf (" %" PRIx8, (unsigned int) val);
7363 if (readp + 2 > readendp)
7365 val = read_2ubyte_unaligned_inc (dbg, readp);
7366 printf(" %" PRIx16, (unsigned int) val);
7370 if (readp + 4 > readendp)
7372 val = read_4ubyte_unaligned_inc (dbg, readp);
7373 printf (" %" PRIx32, (unsigned int) val);
7377 if (readp + 8 > readendp)
7379 val = read_8ubyte_unaligned_inc (dbg, readp);
7380 printf (" %" PRIx64, val);
7384 get_sleb128 (val, readp);
7385 printf (" %" PRIx64, val);
7389 get_uleb128 (val, readp);
7390 printf (" %" PRIx64, val);
7394 get_uleb128 (val, readp);
7395 printf (" block[%" PRIu64 "]", val);
7396 if (readp + val > readendp)
7401 case DW_FORM_block1:
7402 if (readp + 1 > readendp)
7405 printf (" block[%" PRIu64 "]", val);
7406 if (readp + val > readendp)
7410 case DW_FORM_block2:
7411 if (readp + 2 > readendp)
7413 val = read_2ubyte_unaligned_inc (dbg, readp);
7414 printf (" block[%" PRIu64 "]", val);
7415 if (readp + val > readendp)
7419 case DW_FORM_block4:
7420 if (readp + 2 > readendp)
7422 val =read_4ubyte_unaligned_inc (dbg, readp);
7423 printf (" block[%" PRIu64 "]", val);
7424 if (readp + val > readendp)
7429 if (readp + 1 > readendp)
7432 printf (" %s", nl_langinfo (val != 0 ? YESSTR : NOSTR));
7435 case DW_FORM_string:
7436 endp = memchr (readp, '\0', readendp - readp);
7439 printf (" %s", readp);
7444 if (readp + offset_len > readendp)
7446 if (offset_len == 8)
7447 val = read_8ubyte_unaligned_inc (dbg, readp);
7449 val = read_4ubyte_unaligned_inc (dbg, readp);
7450 printf (" %s", dwarf_getstring (dbg, val, NULL));
7453 case DW_FORM_sec_offset:
7454 if (readp + offset_len > readendp)
7456 if (offset_len == 8)
7457 val = read_8ubyte_unaligned_inc (dbg, readp);
7459 val = read_4ubyte_unaligned_inc (dbg, readp);
7460 printf (" %" PRIx64, val);
7464 error (0, 0, gettext ("vendor opcode not verified?"));
7470 putchar_unlocked (',');
7472 putchar_unlocked ('\n');
7475 if (readp + 1 > readendp)
7479 putchar_unlocked ('\n');
7485 /* Callback for printing global names. */
7487 print_pubnames (Dwarf *dbg __attribute__ ((unused)), Dwarf_Global *global,
7490 int *np = (int *) arg;
7492 printf (gettext (" [%5d] DIE offset: %6" PRId64
7493 ", CU DIE offset: %6" PRId64 ", name: %s\n"),
7494 (*np)++, global->die_offset, global->cu_offset, global->name);
7500 /* Print the known exported symbols in the DWARF section '.debug_pubnames'. */
7502 print_debug_pubnames_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
7503 Ebl *ebl, GElf_Ehdr *ehdr,
7504 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
7506 printf (gettext ("\nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
7507 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
7508 (uint64_t) shdr->sh_offset);
7511 (void) dwarf_getpubnames (dbg, print_pubnames, &n, 0);
7514 /* Print the content of the DWARF string section '.debug_str'. */
7516 print_debug_str_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
7517 Ebl *ebl, GElf_Ehdr *ehdr,
7518 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
7520 const size_t sh_size = (dbg->sectiondata[IDX_debug_str] ?
7521 dbg->sectiondata[IDX_debug_str]->d_size : 0);
7523 /* Compute floor(log16(shdr->sh_size)). */
7524 GElf_Addr tmp = sh_size;
7531 digits = MAX (4, digits);
7533 printf (gettext ("\nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"
7536 section_name (ebl, ehdr, shdr), (uint64_t) shdr->sh_offset,
7537 /* TRANS: the debugstr| prefix makes the string unique. */
7538 digits + 2, sgettext ("debugstr|Offset"));
7540 Dwarf_Off offset = 0;
7541 while (offset < sh_size)
7544 const char *str = dwarf_getstring (dbg, offset, &len);
7545 if (unlikely (str == NULL))
7547 printf (gettext (" *** error while reading strings: %s\n"),
7552 printf (" [%*" PRIx64 "] \"%s\"\n", digits, (uint64_t) offset, str);
7559 /* Print the content of the call frame search table section
7562 print_debug_frame_hdr_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
7563 Ebl *ebl __attribute__ ((unused)),
7564 GElf_Ehdr *ehdr __attribute__ ((unused)),
7565 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
7568 \nCall frame search table section [%2zu] '.eh_frame_hdr':\n"),
7571 Elf_Data *data = elf_rawdata (scn, NULL);
7573 if (unlikely (data == NULL))
7575 error (0, 0, gettext ("cannot get %s content: %s"),
7576 ".eh_frame_hdr", elf_errmsg (-1));
7580 const unsigned char *readp = data->d_buf;
7581 const unsigned char *const dataend = ((unsigned char *) data->d_buf
7584 if (unlikely (readp + 4 > dataend))
7587 error (0, 0, gettext ("invalid data"));
7591 unsigned int version = *readp++;
7592 unsigned int eh_frame_ptr_enc = *readp++;
7593 unsigned int fde_count_enc = *readp++;
7594 unsigned int table_enc = *readp++;
7596 printf (" version: %u\n"
7597 " eh_frame_ptr_enc: %#x ",
7598 version, eh_frame_ptr_enc);
7599 print_encoding_base ("", eh_frame_ptr_enc);
7600 printf (" fde_count_enc: %#x ", fde_count_enc);
7601 print_encoding_base ("", fde_count_enc);
7602 printf (" table_enc: %#x ", table_enc);
7603 print_encoding_base ("", table_enc);
7605 uint64_t eh_frame_ptr = 0;
7606 if (eh_frame_ptr_enc != DW_EH_PE_omit)
7608 readp = read_encoded (eh_frame_ptr_enc, readp, dataend, &eh_frame_ptr,
7610 if (unlikely (readp == NULL))
7613 printf (" eh_frame_ptr: %#" PRIx64, eh_frame_ptr);
7614 if ((eh_frame_ptr_enc & 0x70) == DW_EH_PE_pcrel)
7615 printf (" (offset: %#" PRIx64 ")",
7616 /* +4 because of the 4 byte header of the section. */
7617 (uint64_t) shdr->sh_offset + 4 + eh_frame_ptr);
7619 putchar_unlocked ('\n');
7622 uint64_t fde_count = 0;
7623 if (fde_count_enc != DW_EH_PE_omit)
7625 readp = read_encoded (fde_count_enc, readp, dataend, &fde_count, dbg);
7626 if (unlikely (readp == NULL))
7629 printf (" fde_count: %" PRIu64 "\n", fde_count);
7632 if (fde_count == 0 || table_enc == DW_EH_PE_omit)
7637 /* Optimize for the most common case. */
7638 if (table_enc == (DW_EH_PE_datarel | DW_EH_PE_sdata4))
7639 while (fde_count > 0 && readp + 8 <= dataend)
7641 int32_t initial_location = read_4sbyte_unaligned_inc (dbg, readp);
7642 uint64_t initial_offset = ((uint64_t) shdr->sh_offset
7643 + (int64_t) initial_location);
7644 int32_t address = read_4sbyte_unaligned_inc (dbg, readp);
7645 // XXX Possibly print symbol name or section offset for initial_offset
7646 printf (" %#" PRIx32 " (offset: %#6" PRIx64 ") -> %#" PRIx32
7647 " fde=[%6" PRIx64 "]\n",
7648 initial_location, initial_offset,
7649 address, address - (eh_frame_ptr + 4));
7652 while (0 && readp < dataend)
7659 /* Print the content of the exception handling table section
7662 print_debug_exception_table (Dwfl_Module *dwflmod __attribute__ ((unused)),
7663 Ebl *ebl __attribute__ ((unused)),
7664 GElf_Ehdr *ehdr __attribute__ ((unused)),
7666 GElf_Shdr *shdr __attribute__ ((unused)),
7667 Dwarf *dbg __attribute__ ((unused)))
7670 \nException handling table section [%2zu] '.gcc_except_table':\n"),
7673 Elf_Data *data = elf_rawdata (scn, NULL);
7675 if (unlikely (data == NULL))
7677 error (0, 0, gettext ("cannot get %s content: %s"),
7678 ".gcc_except_table", elf_errmsg (-1));
7682 const unsigned char *readp = data->d_buf;
7683 const unsigned char *const dataend = readp + data->d_size;
7685 if (unlikely (readp + 1 > dataend))
7688 error (0, 0, gettext ("invalid data"));
7691 unsigned int lpstart_encoding = *readp++;
7692 printf (gettext (" LPStart encoding: %#x "), lpstart_encoding);
7693 print_encoding_base ("", lpstart_encoding);
7694 if (lpstart_encoding != DW_EH_PE_omit)
7697 readp = read_encoded (lpstart_encoding, readp, dataend, &lpstart, dbg);
7698 printf (" LPStart: %#" PRIx64 "\n", lpstart);
7701 if (unlikely (readp + 1 > dataend))
7703 unsigned int ttype_encoding = *readp++;
7704 printf (gettext (" TType encoding: %#x "), ttype_encoding);
7705 print_encoding_base ("", ttype_encoding);
7706 const unsigned char *ttype_base = NULL;
7707 if (ttype_encoding != DW_EH_PE_omit)
7709 unsigned int ttype_base_offset;
7710 get_uleb128 (ttype_base_offset, readp);
7711 printf (" TType base offset: %#x\n", ttype_base_offset);
7712 ttype_base = readp + ttype_base_offset;
7715 if (unlikely (readp + 1 > dataend))
7717 unsigned int call_site_encoding = *readp++;
7718 printf (gettext (" Call site encoding: %#x "), call_site_encoding);
7719 print_encoding_base ("", call_site_encoding);
7720 unsigned int call_site_table_len;
7721 get_uleb128 (call_site_table_len, readp);
7723 const unsigned char *const action_table = readp + call_site_table_len;
7724 if (unlikely (action_table > dataend))
7727 unsigned int max_action = 0;
7728 while (readp < action_table)
7731 puts (gettext ("\n Call site table:"));
7733 uint64_t call_site_start;
7734 readp = read_encoded (call_site_encoding, readp, dataend,
7735 &call_site_start, dbg);
7736 uint64_t call_site_length;
7737 readp = read_encoded (call_site_encoding, readp, dataend,
7738 &call_site_length, dbg);
7739 uint64_t landing_pad;
7740 readp = read_encoded (call_site_encoding, readp, dataend,
7742 unsigned int action;
7743 get_uleb128 (action, readp);
7744 max_action = MAX (action, max_action);
7745 printf (gettext (" [%4u] Call site start: %#" PRIx64 "\n"
7746 " Call site length: %" PRIu64 "\n"
7747 " Landing pad: %#" PRIx64 "\n"
7749 u++, call_site_start, call_site_length, landing_pad, action);
7751 if (readp != action_table)
7754 unsigned int max_ar_filter = 0;
7757 puts ("\n Action table:");
7759 const unsigned char *const action_table_end
7760 = action_table + max_action + 1;
7766 get_sleb128 (ar_filter, readp);
7767 if (ar_filter > 0 && (unsigned int) ar_filter > max_ar_filter)
7768 max_ar_filter = ar_filter;
7770 get_sleb128 (ar_disp, readp);
7772 printf (" [%4u] ar_filter: % d\n"
7774 u, ar_filter, ar_disp);
7775 if (abs (ar_disp) & 1)
7776 printf (" -> [%4u]\n", u + (ar_disp + 1) / 2);
7777 else if (ar_disp != 0)
7780 putchar_unlocked ('\n');
7783 while (readp < action_table_end);
7786 if (max_ar_filter > 0)
7788 puts ("\n TType table:");
7790 // XXX Not *4, size of encoding;
7791 switch (ttype_encoding & 7)
7793 case DW_EH_PE_udata2:
7794 case DW_EH_PE_sdata2:
7795 readp = ttype_base - max_ar_filter * 2;
7797 case DW_EH_PE_udata4:
7798 case DW_EH_PE_sdata4:
7799 readp = ttype_base - max_ar_filter * 4;
7801 case DW_EH_PE_udata8:
7802 case DW_EH_PE_sdata8:
7803 readp = ttype_base - max_ar_filter * 8;
7806 error (1, 0, gettext ("invalid TType encoding"));
7812 readp = read_encoded (ttype_encoding, readp, ttype_base, &ttype,
7814 printf (" [%4u] %#" PRIx64 "\n", max_ar_filter--, ttype);
7816 while (readp < ttype_base);
7820 /* Print the content of the '.gdb_index' section.
7821 http://sourceware.org/gdb/current/onlinedocs/gdb/Index-Section-Format.html
7824 print_gdb_index_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
7825 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
7827 printf (gettext ("\nGDB section [%2zu] '%s' at offset %#" PRIx64
7828 " contains %" PRId64 " bytes :\n"),
7829 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
7830 (uint64_t) shdr->sh_offset, (uint64_t) shdr->sh_size);
7832 Elf_Data *data = elf_rawdata (scn, NULL);
7834 if (unlikely (data == NULL))
7836 error (0, 0, gettext ("cannot get %s content: %s"),
7837 ".gdb_index", elf_errmsg (-1));
7841 // .gdb_index is always in little endian.
7842 Dwarf dummy_dbg = { .other_byte_order = MY_ELFDATA != ELFDATA2LSB };
7845 const unsigned char *readp = data->d_buf;
7846 const unsigned char *const dataend = readp + data->d_size;
7848 if (unlikely (readp + 4 > dataend))
7851 error (0, 0, gettext ("invalid data"));
7855 int32_t vers = read_4ubyte_unaligned (dbg, readp);
7856 printf (gettext (" Version: %" PRId32 "\n"), vers);
7858 // The only difference between version 4 and version 5 is the
7859 // hash used for generating the table. Version 6 contains symbols
7860 // for inlined functions, older versions didn't. Version 7 adds
7861 // symbol kinds. Version 8 just indicates that it correctly includes
7863 if (vers < 4 || vers > 8)
7865 printf (gettext (" unknown version, cannot parse section\n"));
7870 if (unlikely (readp + 4 > dataend))
7873 uint32_t cu_off = read_4ubyte_unaligned (dbg, readp);
7874 printf (gettext (" CU offset: %#" PRIx32 "\n"), cu_off);
7877 if (unlikely (readp + 4 > dataend))
7880 uint32_t tu_off = read_4ubyte_unaligned (dbg, readp);
7881 printf (gettext (" TU offset: %#" PRIx32 "\n"), tu_off);
7884 if (unlikely (readp + 4 > dataend))
7887 uint32_t addr_off = read_4ubyte_unaligned (dbg, readp);
7888 printf (gettext (" address offset: %#" PRIx32 "\n"), addr_off);
7891 if (unlikely (readp + 4 > dataend))
7894 uint32_t sym_off = read_4ubyte_unaligned (dbg, readp);
7895 printf (gettext (" symbol offset: %#" PRIx32 "\n"), sym_off);
7898 if (unlikely (readp + 4 > dataend))
7901 uint32_t const_off = read_4ubyte_unaligned (dbg, readp);
7902 printf (gettext (" constant offset: %#" PRIx32 "\n"), const_off);
7904 readp = data->d_buf + cu_off;
7906 const unsigned char *nextp = data->d_buf + tu_off;
7907 size_t cu_nr = (nextp - readp) / 16;
7909 printf (gettext ("\n CU list at offset %#" PRIx32
7910 " contains %zu entries:\n"),
7914 while (readp + 16 <= dataend && n < cu_nr)
7916 uint64_t off = read_8ubyte_unaligned (dbg, readp);
7919 uint64_t len = read_8ubyte_unaligned (dbg, readp);
7922 printf (" [%4zu] start: %0#8" PRIx64
7923 ", length: %5" PRIu64 "\n", n, off, len);
7927 readp = data->d_buf + tu_off;
7928 nextp = data->d_buf + addr_off;
7929 size_t tu_nr = (nextp - readp) / 24;
7931 printf (gettext ("\n TU list at offset %#" PRIx32
7932 " contains %zu entries:\n"),
7936 while (readp + 24 <= dataend && n < tu_nr)
7938 uint64_t off = read_8ubyte_unaligned (dbg, readp);
7941 uint64_t type = read_8ubyte_unaligned (dbg, readp);
7944 uint64_t sig = read_8ubyte_unaligned (dbg, readp);
7947 printf (" [%4zu] CU offset: %5" PRId64
7948 ", type offset: %5" PRId64
7949 ", signature: %0#8" PRIx64 "\n", n, off, type, sig);
7953 readp = data->d_buf + addr_off;
7954 nextp = data->d_buf + sym_off;
7955 size_t addr_nr = (nextp - readp) / 20;
7957 printf (gettext ("\n Address list at offset %#" PRIx32
7958 " contains %zu entries:\n"),
7962 while (readp + 20 <= dataend && n < addr_nr)
7964 uint64_t low = read_8ubyte_unaligned (dbg, readp);
7967 uint64_t high = read_8ubyte_unaligned (dbg, readp);
7970 uint32_t idx = read_4ubyte_unaligned (dbg, readp);
7973 char *l = format_dwarf_addr (dwflmod, 8, low, low);
7974 char *h = format_dwarf_addr (dwflmod, 8, high - 1, high);
7975 printf (" [%4zu] %s..%s, CU index: %5" PRId32 "\n",
7982 readp = data->d_buf + sym_off;
7983 nextp = data->d_buf + const_off;
7984 size_t sym_nr = (nextp - readp) / 8;
7986 printf (gettext ("\n Symbol table at offset %#" PRIx32
7987 " contains %zu slots:\n"),
7991 while (readp + 8 <= dataend && n < sym_nr)
7993 uint32_t name = read_4ubyte_unaligned (dbg, readp);
7996 uint32_t vector = read_4ubyte_unaligned (dbg, readp);
7999 if (name != 0 || vector != 0)
8001 const unsigned char *sym = data->d_buf + const_off + name;
8002 if (unlikely (sym > dataend))
8005 printf (" [%4zu] symbol: %s, CUs: ", n, sym);
8007 const unsigned char *readcus = data->d_buf + const_off + vector;
8008 if (unlikely (readcus + 8 > dataend))
8011 uint32_t cus = read_4ubyte_unaligned (dbg, readcus);
8014 uint32_t cu_kind, cu, kind;
8017 cu_kind = read_4ubyte_unaligned (dbg, readcus);
8018 cu = cu_kind & ((1 << 24) - 1);
8019 kind = (cu_kind >> 28) & 7;
8020 is_static = cu_kind & (1U << 31);
8022 printf ("%" PRId32 "T", cu - (uint32_t) cu_nr);
8024 printf ("%" PRId32, cu);
8043 printf ("unknown-0x%" PRIx32, kind);
8046 printf (":%c)", (is_static ? 'S' : 'G'));
8058 print_debug (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr)
8060 /* Before we start the real work get a debug context descriptor. */
8062 Dwarf *dbg = dwfl_module_getdwarf (dwflmod, &dwbias);
8066 .other_byte_order = MY_ELFDATA != ehdr->e_ident[EI_DATA]
8070 if ((print_debug_sections & ~section_exception) != 0)
8071 error (0, 0, gettext ("cannot get debug context descriptor: %s"),
8073 if ((print_debug_sections & section_exception) == 0)
8078 /* Get the section header string table index. */
8080 if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0))
8081 error (EXIT_FAILURE, 0,
8082 gettext ("cannot get section header string table index"));
8084 /* Look through all the sections for the debugging sections to print. */
8085 Elf_Scn *scn = NULL;
8086 while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
8089 GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
8091 if (shdr != NULL && shdr->sh_type == SHT_PROGBITS)
8096 enum section_e bitmask;
8097 void (*fp) (Dwfl_Module *, Ebl *,
8098 GElf_Ehdr *, Elf_Scn *, GElf_Shdr *, Dwarf *);
8099 } debug_sections[] =
8101 #define NEW_SECTION(name) \
8102 { ".debug_" #name, section_##name, print_debug_##name##_section }
8103 NEW_SECTION (abbrev),
8104 NEW_SECTION (aranges),
8105 NEW_SECTION (frame),
8107 NEW_SECTION (types),
8110 NEW_SECTION (pubnames),
8112 NEW_SECTION (macinfo),
8113 NEW_SECTION (macro),
8114 NEW_SECTION (ranges),
8115 { ".eh_frame", section_frame | section_exception,
8116 print_debug_frame_section },
8117 { ".eh_frame_hdr", section_frame | section_exception,
8118 print_debug_frame_hdr_section },
8119 { ".gcc_except_table", section_frame | section_exception,
8120 print_debug_exception_table },
8121 { ".gdb_index", section_gdb_index, print_gdb_index_section }
8123 const int ndebug_sections = (sizeof (debug_sections)
8124 / sizeof (debug_sections[0]));
8125 const char *name = elf_strptr (ebl->elf, shstrndx,
8131 for (n = 0; n < ndebug_sections; ++n)
8132 if (strcmp (name, debug_sections[n].name) == 0
8134 || (name[0] == '.' && name[1] == 'z'
8135 && debug_sections[n].name[1] == 'd'
8136 && strcmp (&name[2], &debug_sections[n].name[1]) == 0)
8140 if ((print_debug_sections | implicit_debug_sections)
8141 & debug_sections[n].bitmask)
8142 debug_sections[n].fp (dwflmod, ebl, ehdr, scn, shdr, dbg);
8148 reset_listptr (&known_loclistptr);
8149 reset_listptr (&known_rangelistptr);
8153 #define ITEM_INDENT 4
8154 #define WRAP_COLUMN 75
8156 /* Print "NAME: FORMAT", wrapping when output text would make the line
8157 exceed WRAP_COLUMN. Unpadded numbers look better for the core items
8158 but this function is also used for registers which should be printed
8159 aligned. Fortunately registers output uses fixed fields width (such
8160 as %11d) for the alignment.
8162 Line breaks should not depend on the particular values although that
8163 may happen in some cases of the core items. */
8166 __attribute__ ((format (printf, 6, 7)))
8167 print_core_item (unsigned int colno, char sep, unsigned int wrap,
8168 size_t name_width, const char *name, const char *format, ...)
8170 size_t len = strlen (name);
8171 if (name_width < len)
8176 va_start (ap, format);
8177 int out_len = vasprintf (&out, format, ap);
8180 error (EXIT_FAILURE, 0, _("memory exhausted"));
8182 size_t n = name_width + sizeof ": " - 1 + out_len;
8186 printf ("%*s", ITEM_INDENT, "");
8187 colno = ITEM_INDENT + n;
8189 else if (colno + 2 + n < wrap)
8191 printf ("%c ", sep);
8196 printf ("\n%*s", ITEM_INDENT, "");
8197 colno = ITEM_INDENT + n;
8200 printf ("%s: %*s%s", name, (int) (name_width - len), "", out);
8208 convert (Elf *core, Elf_Type type, uint_fast16_t count,
8209 void *value, const void *data, size_t size)
8211 Elf_Data valuedata =
8215 .d_size = size ?: gelf_fsize (core, type, count, EV_CURRENT),
8216 .d_version = EV_CURRENT,
8221 .d_buf = (void *) data,
8222 .d_size = valuedata.d_size,
8223 .d_version = EV_CURRENT,
8226 Elf_Data *d = (gelf_getclass (core) == ELFCLASS32
8227 ? elf32_xlatetom : elf64_xlatetom)
8228 (&valuedata, &indata, elf_getident (core, NULL)[EI_DATA]);
8230 error (EXIT_FAILURE, 0,
8231 gettext ("cannot convert core note data: %s"), elf_errmsg (-1));
8233 return data + indata.d_size;
8236 typedef uint8_t GElf_Byte;
8239 handle_core_item (Elf *core, const Ebl_Core_Item *item, const void *desc,
8240 unsigned int colno, size_t *repeated_size)
8242 uint_fast16_t count = item->count ?: 1;
8245 DO_TYPE (BYTE, Byte, "0x%.2" PRIx8, "%" PRId8); \
8246 DO_TYPE (HALF, Half, "0x%.4" PRIx16, "%" PRId16); \
8247 DO_TYPE (WORD, Word, "0x%.8" PRIx32, "%" PRId32); \
8248 DO_TYPE (SWORD, Sword, "%" PRId32, "%" PRId32); \
8249 DO_TYPE (XWORD, Xword, "0x%.16" PRIx64, "%" PRId64); \
8250 DO_TYPE (SXWORD, Sxword, "%" PRId64, "%" PRId64)
8252 #define DO_TYPE(NAME, Name, hex, dec) GElf_##Name Name[count]
8253 union { TYPES; } value;
8256 void *data = &value;
8257 size_t size = gelf_fsize (core, item->type, count, EV_CURRENT);
8258 size_t convsize = size;
8259 if (repeated_size != NULL)
8261 if (*repeated_size > size && (item->format == 'b' || item->format == 'B'))
8263 data = alloca (*repeated_size);
8264 count *= *repeated_size / size;
8265 convsize = count * size;
8266 *repeated_size -= convsize;
8268 else if (item->count != 0 || item->format != '\n')
8269 *repeated_size -= size;
8272 convert (core, item->type, count, data, desc + item->offset, convsize);
8274 Elf_Type type = item->type;
8275 if (type == ELF_T_ADDR)
8276 type = gelf_getclass (core) == ELFCLASS32 ? ELF_T_WORD : ELF_T_XWORD;
8278 switch (item->format)
8281 assert (count == 1);
8284 #define DO_TYPE(NAME, Name, hex, dec) \
8285 case ELF_T_##NAME: \
8286 colno = print_core_item (colno, ',', WRAP_COLUMN, \
8287 0, item->name, dec, value.Name[0]); \
8297 assert (count == 1);
8300 #define DO_TYPE(NAME, Name, hex, dec) \
8301 case ELF_T_##NAME: \
8302 colno = print_core_item (colno, ',', WRAP_COLUMN, \
8303 0, item->name, hex, value.Name[0]); \
8314 assert (size % sizeof (unsigned int) == 0);
8315 unsigned int nbits = count * size * 8;
8316 unsigned int pop = 0;
8317 for (const unsigned int *i = data; (void *) i < data + count * size; ++i)
8318 pop += __builtin_popcount (*i);
8319 bool negate = pop > nbits / 2;
8320 const unsigned int bias = item->format == 'b';
8323 char printed[(negate ? nbits - pop : pop) * 16 + 1];
8327 if (BYTE_ORDER != LITTLE_ENDIAN && size > sizeof (unsigned int))
8329 assert (size == sizeof (unsigned int) * 2);
8330 for (unsigned int *i = data;
8331 (void *) i < data + count * size; i += 2)
8333 unsigned int w = i[1];
8339 unsigned int lastbit = 0;
8340 unsigned int run = 0;
8341 for (const unsigned int *i = data;
8342 (void *) i < data + count * size; ++i)
8344 unsigned int bit = ((void *) i - data) * 8;
8345 unsigned int w = negate ? ~*i : *i;
8352 if (lastbit != 0 && lastbit + 1 == bit)
8357 p += sprintf (p, "%u", bit - bias);
8359 p += sprintf (p, ",%u", bit - bias);
8361 p += sprintf (p, "-%u,%u", lastbit - bias, bit - bias);
8368 if (lastbit > 0 && run > 0 && lastbit + 1 != nbits)
8369 p += sprintf (p, "-%u", lastbit - bias);
8371 colno = print_core_item (colno, ',', WRAP_COLUMN, 0, item->name,
8372 negate ? "~<%s>" : "<%s>", printed);
8377 case (char) ('T'|0x80):
8378 assert (count == 2);
8383 #define DO_TYPE(NAME, Name, hex, dec) \
8384 case ELF_T_##NAME: \
8385 sec = value.Name[0]; \
8386 usec = value.Name[1]; \
8393 if (unlikely (item->format == (char) ('T'|0x80)))
8395 /* This is a hack for an ill-considered 64-bit ABI where
8396 tv_usec is actually a 32-bit field with 32 bits of padding
8397 rounding out struct timeval. We've already converted it as
8398 a 64-bit field. For little-endian, this just means the
8399 high half is the padding; it's presumably zero, but should
8400 be ignored anyway. For big-endian, it means the 32-bit
8401 field went into the high half of USEC. */
8403 GElf_Ehdr *ehdr = gelf_getehdr (core, &ehdr_mem);
8404 if (likely (ehdr->e_ident[EI_DATA] == ELFDATA2MSB))
8409 colno = print_core_item (colno, ',', WRAP_COLUMN, 0, item->name,
8410 "%" PRIu64 ".%.6" PRIu64, sec, usec);
8414 assert (count == 1);
8415 colno = print_core_item (colno, ',', WRAP_COLUMN, 0, item->name,
8416 "%c", value.Byte[0]);
8420 colno = print_core_item (colno, ',', WRAP_COLUMN, 0, item->name,
8421 "%.*s", (int) count, value.Byte);
8425 /* This is a list of strings separated by '\n'. */
8426 assert (item->count == 0);
8427 assert (repeated_size != NULL);
8428 assert (item->name == NULL);
8429 if (unlikely (item->offset >= *repeated_size))
8432 const char *s = desc + item->offset;
8433 size = *repeated_size - item->offset;
8437 const char *eol = memchr (s, '\n', size);
8441 printf ("%*s%.*s\n", ITEM_INDENT, "", len, s);
8444 size -= eol + 1 - s;
8448 colno = WRAP_COLUMN;
8455 error (0, 0, "XXX not handling format '%c' for %s",
8456 item->format, item->name);
8466 /* Sort items by group, and by layout offset within each group. */
8468 compare_core_items (const void *a, const void *b)
8470 const Ebl_Core_Item *const *p1 = a;
8471 const Ebl_Core_Item *const *p2 = b;
8472 const Ebl_Core_Item *item1 = *p1;
8473 const Ebl_Core_Item *item2 = *p2;
8475 return ((item1->group == item2->group ? 0
8476 : strcmp (item1->group, item2->group))
8477 ?: (int) item1->offset - (int) item2->offset);
8480 /* Sort item groups by layout offset of the first item in the group. */
8482 compare_core_item_groups (const void *a, const void *b)
8484 const Ebl_Core_Item *const *const *p1 = a;
8485 const Ebl_Core_Item *const *const *p2 = b;
8486 const Ebl_Core_Item *const *group1 = *p1;
8487 const Ebl_Core_Item *const *group2 = *p2;
8488 const Ebl_Core_Item *item1 = *group1;
8489 const Ebl_Core_Item *item2 = *group2;
8491 return (int) item1->offset - (int) item2->offset;
8495 handle_core_items (Elf *core, const void *desc, size_t descsz,
8496 const Ebl_Core_Item *items, size_t nitems)
8500 unsigned int colno = 0;
8502 /* FORMAT '\n' makes sense to be present only as a single item as it
8503 processes all the data of a note. FORMATs 'b' and 'B' have a special case
8504 if present as a single item but they can be also processed with other
8506 if (nitems == 1 && (items[0].format == '\n' || items[0].format == 'b'
8507 || items[0].format == 'B'))
8509 assert (items[0].offset == 0);
8510 size_t size = descsz;
8511 colno = handle_core_item (core, items, desc, colno, &size);
8512 /* If SIZE is not zero here there is some remaining data. But we do not
8513 know how to process it anyway. */
8516 for (size_t i = 0; i < nitems; ++i)
8517 assert (items[i].format != '\n');
8519 /* Sort to collect the groups together. */
8520 const Ebl_Core_Item *sorted_items[nitems];
8521 for (size_t i = 0; i < nitems; ++i)
8522 sorted_items[i] = &items[i];
8523 qsort (sorted_items, nitems, sizeof sorted_items[0], &compare_core_items);
8525 /* Collect the unique groups and sort them. */
8526 const Ebl_Core_Item **groups[nitems];
8527 groups[0] = &sorted_items[0];
8529 for (size_t i = 1; i < nitems; ++i)
8530 if (sorted_items[i]->group != sorted_items[i - 1]->group
8531 && strcmp (sorted_items[i]->group, sorted_items[i - 1]->group))
8532 groups[ngroups++] = &sorted_items[i];
8533 qsort (groups, ngroups, sizeof groups[0], &compare_core_item_groups);
8535 /* Write out all the groups. */
8536 const void *last = desc;
8539 for (size_t i = 0; i < ngroups; ++i)
8541 for (const Ebl_Core_Item **item = groups[i];
8542 (item < &sorted_items[nitems]
8543 && ((*item)->group == groups[i][0]->group
8544 || !strcmp ((*item)->group, groups[i][0]->group)));
8546 colno = handle_core_item (core, *item, desc, colno, NULL);
8548 /* Force a line break at the end of the group. */
8549 colno = WRAP_COLUMN;
8555 /* This set of items consumed a certain amount of the note's data.
8556 If there is more data there, we have another unit of the same size.
8557 Loop to print that out too. */
8558 const Ebl_Core_Item *item = &items[nitems - 1];
8559 size_t eltsz = item->offset + gelf_fsize (core, item->type,
8560 item->count ?: 1, EV_CURRENT);
8569 while (descsz >= eltsz && !memcmp (desc, last, eltsz));
8573 /* For just one repeat, print it unabridged twice. */
8578 printf (gettext ("\n%*s... <repeats %u more times> ..."),
8579 ITEM_INDENT, "", reps);
8589 handle_bit_registers (const Ebl_Register_Location *regloc, const void *desc,
8592 desc += regloc->offset;
8600 handle_core_register (Ebl *ebl, Elf *core, int maxregname,
8601 const Ebl_Register_Location *regloc, const void *desc,
8604 if (regloc->bits % 8 != 0)
8605 return handle_bit_registers (regloc, desc, colno);
8607 desc += regloc->offset;
8609 for (int reg = regloc->regno; reg < regloc->regno + regloc->count; ++reg)
8611 char name[REGNAMESZ];
8614 register_info (ebl, reg, regloc, name, &bits, &type);
8617 BITS (8, BYTE, "%4" PRId8, "0x%.2" PRIx8); \
8618 BITS (16, HALF, "%6" PRId16, "0x%.4" PRIx16); \
8619 BITS (32, WORD, "%11" PRId32, " 0x%.8" PRIx32); \
8620 BITS (64, XWORD, "%20" PRId64, " 0x%.16" PRIx64)
8622 #define BITS(bits, xtype, sfmt, ufmt) \
8623 uint##bits##_t b##bits; int##bits##_t b##bits##s
8624 union { TYPES; uint64_t b128[2]; } value;
8629 case DW_ATE_unsigned:
8631 case DW_ATE_address:
8634 #define BITS(bits, xtype, sfmt, ufmt) \
8636 desc = convert (core, ELF_T_##xtype, 1, &value, desc, 0); \
8637 if (type == DW_ATE_signed) \
8638 colno = print_core_item (colno, ' ', WRAP_COLUMN, \
8640 sfmt, value.b##bits##s); \
8642 colno = print_core_item (colno, ' ', WRAP_COLUMN, \
8644 ufmt, value.b##bits); \
8650 assert (type == DW_ATE_unsigned);
8651 desc = convert (core, ELF_T_XWORD, 2, &value, desc, 0);
8652 int be = elf_getident (core, NULL)[EI_DATA] == ELFDATA2MSB;
8653 colno = print_core_item (colno, ' ', WRAP_COLUMN,
8655 "0x%.16" PRIx64 "%.16" PRIx64,
8656 value.b128[!be], value.b128[be]);
8666 /* Print each byte in hex, the whole thing in native byte order. */
8667 assert (bits % 8 == 0);
8668 const uint8_t *bytes = desc;
8670 char hex[bits / 4 + 1];
8671 hex[bits / 4] = '\0';
8673 if (elf_getident (core, NULL)[EI_DATA] == ELFDATA2LSB)
8675 bytes += bits / 8 - 1;
8679 for (char *h = hex; bits > 0; bits -= 8, idx += incr)
8681 *h++ = "0123456789abcdef"[bytes[idx] >> 4];
8682 *h++ = "0123456789abcdef"[bytes[idx] & 0xf];
8684 colno = print_core_item (colno, ' ', WRAP_COLUMN,
8685 maxregname, name, "0x%s", hex);
8688 desc += regloc->pad;
8697 struct register_info
8699 const Ebl_Register_Location *regloc;
8701 char name[REGNAMESZ];
8708 register_bitpos (const struct register_info *r)
8710 return (r->regloc->offset * 8
8711 + ((r->regno - r->regloc->regno)
8712 * (r->regloc->bits + r->regloc->pad * 8)));
8716 compare_sets_by_info (const struct register_info *r1,
8717 const struct register_info *r2)
8719 return ((int) r2->bits - (int) r1->bits
8720 ?: register_bitpos (r1) - register_bitpos (r2));
8723 /* Sort registers by set, and by size and layout offset within each set. */
8725 compare_registers (const void *a, const void *b)
8727 const struct register_info *r1 = a;
8728 const struct register_info *r2 = b;
8730 /* Unused elements sort last. */
8731 if (r1->regloc == NULL)
8732 return r2->regloc == NULL ? 0 : 1;
8733 if (r2->regloc == NULL)
8736 return ((r1->set == r2->set ? 0 : strcmp (r1->set, r2->set))
8737 ?: compare_sets_by_info (r1, r2));
8740 /* Sort register sets by layout offset of the first register in the set. */
8742 compare_register_sets (const void *a, const void *b)
8744 const struct register_info *const *p1 = a;
8745 const struct register_info *const *p2 = b;
8746 return compare_sets_by_info (*p1, *p2);
8750 handle_core_registers (Ebl *ebl, Elf *core, const void *desc,
8751 const Ebl_Register_Location *reglocs, size_t nregloc)
8756 ssize_t maxnreg = ebl_register_info (ebl, 0, NULL, 0, NULL, NULL, NULL, NULL);
8759 for (size_t i = 0; i < nregloc; ++i)
8760 if (maxnreg < reglocs[i].regno + reglocs[i].count)
8761 maxnreg = reglocs[i].regno + reglocs[i].count;
8762 assert (maxnreg > 0);
8765 struct register_info regs[maxnreg];
8766 memset (regs, 0, sizeof regs);
8768 /* Sort to collect the sets together. */
8770 for (size_t i = 0; i < nregloc; ++i)
8771 for (int reg = reglocs[i].regno;
8772 reg < reglocs[i].regno + reglocs[i].count;
8775 assert (reg < maxnreg);
8778 struct register_info *info = ®s[reg];
8779 info->regloc = ®locs[i];
8781 info->set = register_info (ebl, reg, ®locs[i],
8782 info->name, &info->bits, &info->type);
8784 qsort (regs, maxreg + 1, sizeof regs[0], &compare_registers);
8786 /* Collect the unique sets and sort them. */
8787 inline bool same_set (const struct register_info *a,
8788 const struct register_info *b)
8790 return (a < ®s[maxnreg] && a->regloc != NULL
8791 && b < ®s[maxnreg] && b->regloc != NULL
8792 && a->bits == b->bits
8793 && (a->set == b->set || !strcmp (a->set, b->set)));
8795 struct register_info *sets[maxreg + 1];
8798 for (int i = 1; i <= maxreg; ++i)
8799 if (regs[i].regloc != NULL && !same_set (®s[i], ®s[i - 1]))
8800 sets[nsets++] = ®s[i];
8801 qsort (sets, nsets, sizeof sets[0], &compare_register_sets);
8803 /* Write out all the sets. */
8804 unsigned int colno = 0;
8805 for (size_t i = 0; i < nsets; ++i)
8807 /* Find the longest name of a register in this set. */
8809 const struct register_info *end;
8810 for (end = sets[i]; same_set (sets[i], end); ++end)
8812 size_t len = strlen (end->name);
8817 for (const struct register_info *reg = sets[i];
8819 reg += reg->regloc->count ?: 1)
8820 colno = handle_core_register (ebl, core, maxname,
8821 reg->regloc, desc, colno);
8823 /* Force a line break at the end of the group. */
8824 colno = WRAP_COLUMN;
8831 handle_auxv_note (Ebl *ebl, Elf *core, GElf_Word descsz, GElf_Off desc_pos)
8833 Elf_Data *data = elf_getdata_rawchunk (core, desc_pos, descsz, ELF_T_AUXV);
8836 error (EXIT_FAILURE, 0,
8837 gettext ("cannot convert core note data: %s"), elf_errmsg (-1));
8839 const size_t nauxv = descsz / gelf_fsize (core, ELF_T_AUXV, 1, EV_CURRENT);
8840 for (size_t i = 0; i < nauxv; ++i)
8843 GElf_auxv_t *av = gelf_getauxv (data, i, &av_mem);
8849 if (ebl_auxv_info (ebl, av->a_type, &name, &fmt) == 0)
8852 if (av->a_un.a_val == 0)
8853 printf (" %" PRIu64 "\n", av->a_type);
8855 printf (" %" PRIu64 ": %#" PRIx64 "\n",
8856 av->a_type, av->a_un.a_val);
8861 case '\0': /* Normally zero. */
8862 if (av->a_un.a_val == 0)
8864 printf (" %s\n", name);
8869 case 'p': /* address */
8870 case 's': /* address of string */
8871 printf (" %s: %#" PRIx64 "\n", name, av->a_un.a_val);
8874 printf (" %s: %" PRIu64 "\n", name, av->a_un.a_val);
8877 printf (" %s: %" PRId64 "\n", name, av->a_un.a_val);
8881 printf (" %s: %#" PRIx64 " ", name, av->a_un.a_val);
8883 const char *pfx = "<";
8884 for (const char *p = fmt + 1; *p != 0; p = strchr (p, '\0') + 1)
8886 if (av->a_un.a_val & bit)
8888 printf ("%s%s", pfx, p);
8903 buf_has_data (unsigned char const *ptr, unsigned char const *end, size_t sz)
8905 return ptr < end && (size_t) (end - ptr) >= sz;
8909 buf_read_int (Elf *core, unsigned char const **ptrp, unsigned char const *end,
8912 if (! buf_has_data (*ptrp, end, 4))
8915 *ptrp = convert (core, ELF_T_WORD, 1, retp, *ptrp, 4);
8920 buf_read_ulong (Elf *core, unsigned char const **ptrp, unsigned char const *end,
8923 size_t sz = gelf_fsize (core, ELF_T_ADDR, 1, EV_CURRENT);
8924 if (! buf_has_data (*ptrp, end, sz))
8933 *ptrp = convert (core, ELF_T_ADDR, 1, &u, *ptrp, sz);
8943 handle_siginfo_note (Elf *core, GElf_Word descsz, GElf_Off desc_pos)
8945 Elf_Data *data = elf_getdata_rawchunk (core, desc_pos, descsz, ELF_T_BYTE);
8947 error (EXIT_FAILURE, 0,
8948 gettext ("cannot convert core note data: %s"), elf_errmsg (-1));
8950 unsigned char const *ptr = data->d_buf;
8951 unsigned char const *const end = data->d_buf + data->d_size;
8953 /* Siginfo head is three ints: signal number, error number, origin
8955 int si_signo, si_errno, si_code;
8956 if (! buf_read_int (core, &ptr, end, &si_signo)
8957 || ! buf_read_int (core, &ptr, end, &si_errno)
8958 || ! buf_read_int (core, &ptr, end, &si_code))
8961 printf (" Not enough data in NT_SIGINFO note.\n");
8965 /* Next is a pointer-aligned union of structures. On 64-bit
8966 machines, that implies a word of padding. */
8967 if (gelf_getclass (core) == ELFCLASS64)
8970 printf (" si_signo: %d, si_errno: %d, si_code: %d\n",
8971 si_signo, si_errno, si_code);
8982 if (! buf_read_ulong (core, &ptr, end, &addr))
8984 printf (" fault address: %#" PRIx64 "\n", addr);
8990 else if (si_code == SI_USER)
8993 if (! buf_read_int (core, &ptr, end, &pid)
8994 || ! buf_read_int (core, &ptr, end, &uid))
8996 printf (" sender PID: %d, sender UID: %d\n", pid, uid);
9001 handle_file_note (Elf *core, GElf_Word descsz, GElf_Off desc_pos)
9003 Elf_Data *data = elf_getdata_rawchunk (core, desc_pos, descsz, ELF_T_BYTE);
9005 error (EXIT_FAILURE, 0,
9006 gettext ("cannot convert core note data: %s"), elf_errmsg (-1));
9008 unsigned char const *ptr = data->d_buf;
9009 unsigned char const *const end = data->d_buf + data->d_size;
9011 uint64_t count, page_size;
9012 if (! buf_read_ulong (core, &ptr, end, &count)
9013 || ! buf_read_ulong (core, &ptr, end, &page_size))
9016 printf (" Not enough data in NT_FILE note.\n");
9020 /* Where file names are stored. */
9021 unsigned char const *const fstart
9022 = ptr + 3 * count * gelf_fsize (core, ELF_T_ADDR, 1, EV_CURRENT);
9023 char const *fptr = (char *) fstart;
9025 printf (" %" PRId64 " files:\n", count);
9026 for (uint64_t i = 0; i < count; ++i)
9028 uint64_t mstart, mend, moffset;
9029 if (! buf_read_ulong (core, &ptr, fstart, &mstart)
9030 || ! buf_read_ulong (core, &ptr, fstart, &mend)
9031 || ! buf_read_ulong (core, &ptr, fstart, &moffset))
9034 const char *fnext = memchr (fptr, '\0', (char *) end - fptr);
9038 int ct = printf (" %08" PRIx64 "-%08" PRIx64
9039 " %08" PRIx64 " %" PRId64,
9040 mstart, mend, moffset * page_size, mend - mstart);
9041 printf ("%*s%s\n", ct > 50 ? 3 : 53 - ct, "", fptr);
9048 handle_core_note (Ebl *ebl, const GElf_Nhdr *nhdr,
9049 const char *name, const void *desc)
9051 GElf_Word regs_offset;
9053 const Ebl_Register_Location *reglocs;
9055 const Ebl_Core_Item *items;
9057 if (! ebl_core_note (ebl, nhdr, name,
9058 ®s_offset, &nregloc, ®locs, &nitems, &items))
9061 /* Pass 0 for DESCSZ when there are registers in the note,
9062 so that the ITEMS array does not describe the whole thing.
9063 For non-register notes, the actual descsz might be a multiple
9064 of the unit size, not just exactly the unit size. */
9065 unsigned int colno = handle_core_items (ebl->elf, desc,
9066 nregloc == 0 ? nhdr->n_descsz : 0,
9069 putchar_unlocked ('\n');
9071 colno = handle_core_registers (ebl, ebl->elf, desc + regs_offset,
9074 putchar_unlocked ('\n');
9078 handle_notes_data (Ebl *ebl, const GElf_Ehdr *ehdr,
9079 GElf_Off start, Elf_Data *data)
9081 fputs_unlocked (gettext (" Owner Data size Type\n"), stdout);
9090 while (offset < data->d_size
9091 && (offset = gelf_getnote (data, offset,
9092 &nhdr, &name_offset, &desc_offset)) > 0)
9094 const char *name = data->d_buf + name_offset;
9095 const char *desc = data->d_buf + desc_offset;
9099 printf (gettext (" %-13.*s %9" PRId32 " %s\n"),
9100 (int) nhdr.n_namesz, name, nhdr.n_descsz,
9101 ehdr->e_type == ET_CORE
9102 ? ebl_core_note_type_name (ebl, nhdr.n_type,
9104 : ebl_object_note_type_name (ebl, name, nhdr.n_type,
9105 buf2, sizeof (buf2)));
9107 /* Filter out invalid entries. */
9108 if (memchr (name, '\0', nhdr.n_namesz) != NULL
9109 /* XXX For now help broken Linux kernels. */
9112 if (ehdr->e_type == ET_CORE)
9114 if (nhdr.n_type == NT_AUXV
9115 && (nhdr.n_namesz == 4 /* Broken old Linux kernels. */
9116 || (nhdr.n_namesz == 5 && name[4] == '\0'))
9117 && !memcmp (name, "CORE", 4))
9118 handle_auxv_note (ebl, ebl->elf, nhdr.n_descsz,
9119 start + desc_offset);
9120 else if (nhdr.n_namesz == 5 && strcmp (name, "CORE") == 0)
9121 switch (nhdr.n_type)
9124 handle_siginfo_note (ebl->elf, nhdr.n_descsz,
9125 start + desc_offset);
9129 handle_file_note (ebl->elf, nhdr.n_descsz,
9130 start + desc_offset);
9134 handle_core_note (ebl, &nhdr, name, desc);
9137 handle_core_note (ebl, &nhdr, name, desc);
9140 ebl_object_note (ebl, name, nhdr.n_type, nhdr.n_descsz, desc);
9144 if (offset == data->d_size)
9148 error (EXIT_FAILURE, 0,
9149 gettext ("cannot get content of note section: %s"),
9154 handle_notes (Ebl *ebl, GElf_Ehdr *ehdr)
9156 /* If we have section headers, just look for SHT_NOTE sections.
9157 In a debuginfo file, the program headers are not reliable. */
9160 /* Get the section header string table index. */
9162 if (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0)
9163 error (EXIT_FAILURE, 0,
9164 gettext ("cannot get section header string table index"));
9166 Elf_Scn *scn = NULL;
9167 while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
9170 GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
9172 if (shdr == NULL || shdr->sh_type != SHT_NOTE)
9173 /* Not what we are looking for. */
9177 \nNote section [%2zu] '%s' of %" PRIu64 " bytes at offset %#0" PRIx64 ":\n"),
9179 elf_strptr (ebl->elf, shstrndx, shdr->sh_name),
9180 shdr->sh_size, shdr->sh_offset);
9182 handle_notes_data (ebl, ehdr, shdr->sh_offset,
9183 elf_getdata (scn, NULL));
9188 /* We have to look through the program header to find the note
9189 sections. There can be more than one. */
9190 for (size_t cnt = 0; cnt < phnum; ++cnt)
9193 GElf_Phdr *phdr = gelf_getphdr (ebl->elf, cnt, &mem);
9195 if (phdr == NULL || phdr->p_type != PT_NOTE)
9196 /* Not what we are looking for. */
9200 \nNote segment of %" PRIu64 " bytes at offset %#0" PRIx64 ":\n"),
9201 phdr->p_filesz, phdr->p_offset);
9203 handle_notes_data (ebl, ehdr, phdr->p_offset,
9204 elf_getdata_rawchunk (ebl->elf,
9205 phdr->p_offset, phdr->p_filesz,
9212 hex_dump (const uint8_t *data, size_t len)
9217 printf (" 0x%08Zx ", pos);
9219 const size_t chunk = MIN (len - pos, 16);
9221 for (size_t i = 0; i < chunk; ++i)
9223 printf ("%02x ", data[pos + i]);
9225 printf ("%02x", data[pos + i]);
9228 printf ("%*s", (int) ((16 - chunk) * 2 + (16 - chunk + 3) / 4), "");
9230 for (size_t i = 0; i < chunk; ++i)
9232 unsigned char b = data[pos + i];
9233 printf ("%c", isprint (b) ? b : '.');
9242 dump_data_section (Elf_Scn *scn, const GElf_Shdr *shdr, const char *name)
9244 if (shdr->sh_size == 0 || shdr->sh_type == SHT_NOBITS)
9245 printf (gettext ("\nSection [%Zu] '%s' has no data to dump.\n"),
9246 elf_ndxscn (scn), name);
9249 Elf_Data *data = elf_rawdata (scn, NULL);
9251 error (0, 0, gettext ("cannot get data for section [%Zu] '%s': %s"),
9252 elf_ndxscn (scn), name, elf_errmsg (-1));
9255 printf (gettext ("\nHex dump of section [%Zu] '%s', %" PRIu64
9256 " bytes at offset %#0" PRIx64 ":\n"),
9257 elf_ndxscn (scn), name,
9258 shdr->sh_size, shdr->sh_offset);
9259 hex_dump (data->d_buf, data->d_size);
9265 print_string_section (Elf_Scn *scn, const GElf_Shdr *shdr, const char *name)
9267 if (shdr->sh_size == 0 || shdr->sh_type == SHT_NOBITS)
9268 printf (gettext ("\nSection [%Zu] '%s' has no strings to dump.\n"),
9269 elf_ndxscn (scn), name);
9272 Elf_Data *data = elf_rawdata (scn, NULL);
9274 error (0, 0, gettext ("cannot get data for section [%Zu] '%s': %s"),
9275 elf_ndxscn (scn), name, elf_errmsg (-1));
9278 printf (gettext ("\nString section [%Zu] '%s' contains %" PRIu64
9279 " bytes at offset %#0" PRIx64 ":\n"),
9280 elf_ndxscn (scn), name,
9281 shdr->sh_size, shdr->sh_offset);
9283 const char *start = data->d_buf;
9284 const char *const limit = start + data->d_size;
9287 const char *end = memchr (start, '\0', limit - start);
9288 const size_t pos = start - (const char *) data->d_buf;
9289 if (unlikely (end == NULL))
9291 printf (" [%6Zx]- %.*s\n",
9292 pos, (int) (limit - start), start);
9295 printf (" [%6Zx] %s\n", pos, start);
9297 } while (start < limit);
9303 for_each_section_argument (Elf *elf, const struct section_argument *list,
9304 void (*dump) (Elf_Scn *scn, const GElf_Shdr *shdr,
9307 /* Get the section header string table index. */
9309 if (elf_getshdrstrndx (elf, &shstrndx) < 0)
9310 error (EXIT_FAILURE, 0,
9311 gettext ("cannot get section header string table index"));
9313 for (const struct section_argument *a = list; a != NULL; a = a->next)
9317 const char *name = NULL;
9320 unsigned long int shndx = strtoul (a->arg, &endp, 0);
9321 if (endp != a->arg && *endp == '\0')
9323 scn = elf_getscn (elf, shndx);
9326 error (0, 0, gettext ("\nsection [%lu] does not exist"), shndx);
9330 if (gelf_getshdr (scn, &shdr_mem) == NULL)
9331 error (EXIT_FAILURE, 0, gettext ("cannot get section header: %s"),
9333 name = elf_strptr (elf, shstrndx, shdr_mem.sh_name);
9337 /* Need to look up the section by name. */
9340 while ((scn = elf_nextscn (elf, scn)) != NULL)
9342 if (gelf_getshdr (scn, &shdr_mem) == NULL)
9344 name = elf_strptr (elf, shstrndx, shdr_mem.sh_name);
9347 if (!strcmp (name, a->arg))
9350 (*dump) (scn, &shdr_mem, name);
9354 if (unlikely (!found) && !a->implicit)
9355 error (0, 0, gettext ("\nsection '%s' does not exist"), a->arg);
9361 dump_data (Ebl *ebl)
9363 for_each_section_argument (ebl->elf, dump_data_sections, &dump_data_section);
9367 dump_strings (Ebl *ebl)
9369 for_each_section_argument (ebl->elf, string_sections, &print_string_section);
9373 print_strings (Ebl *ebl)
9375 /* Get the section header string table index. */
9377 if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0))
9378 error (EXIT_FAILURE, 0,
9379 gettext ("cannot get section header string table index"));
9385 while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
9387 if (gelf_getshdr (scn, &shdr_mem) == NULL)
9390 if (shdr_mem.sh_type != SHT_PROGBITS
9391 || !(shdr_mem.sh_flags & SHF_STRINGS))
9394 name = elf_strptr (ebl->elf, shstrndx, shdr_mem.sh_name);
9398 print_string_section (scn, &shdr_mem, name);
9403 dump_archive_index (Elf *elf, const char *fname)
9406 const Elf_Arsym *arsym = elf_getarsym (elf, &narsym);
9409 int result = elf_errno ();
9410 if (unlikely (result != ELF_E_NO_INDEX))
9411 error (EXIT_FAILURE, 0,
9412 gettext ("cannot get symbol index of archive '%s': %s"),
9413 fname, elf_errmsg (result));
9415 printf (gettext ("\nArchive '%s' has no symbol index\n"), fname);
9419 printf (gettext ("\nIndex of archive '%s' has %Zu entries:\n"),
9423 for (const Elf_Arsym *s = arsym; s < &arsym[narsym - 1]; ++s)
9425 if (s->as_off != as_off)
9430 if (unlikely (elf_rand (elf, as_off) == 0)
9431 || unlikely ((subelf = elf_begin (-1, ELF_C_READ_MMAP, elf))
9433 #if __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 7)
9436 error (EXIT_FAILURE, 0,
9437 gettext ("cannot extract member at offset %Zu in '%s': %s"),
9438 as_off, fname, elf_errmsg (-1));
9440 const Elf_Arhdr *h = elf_getarhdr (subelf);
9442 printf (gettext ("Archive member '%s' contains:\n"), h->ar_name);
9447 printf ("\t%s\n", s->as_name);
9451 #include "debugpred.h"