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. */
4004 addr = read_4ubyte_unaligned (dbg, data);
4007 assert (ref_size == 8);
4008 addr = read_8ubyte_unaligned (dbg, data);
4013 printf ("%*s[%4" PRIuMAX "] %s %#" PRIxMAX "\n",
4014 indent, "", (uintmax_t) offset,
4015 op_name, (uintmax_t) addr);
4016 offset += 1 + ref_size;
4019 case DW_OP_deref_size:
4020 case DW_OP_xderef_size:
4023 // XXX value might be modified by relocation
4025 printf ("%*s[%4" PRIuMAX "] %s %" PRIu8 "\n",
4026 indent, "", (uintmax_t) offset,
4027 op_name, *((uint8_t *) data));
4035 // XXX value might be modified by relocation
4036 printf ("%*s[%4" PRIuMAX "] %s %" PRIu16 "\n",
4037 indent, "", (uintmax_t) offset,
4038 op_name, read_2ubyte_unaligned (dbg, data));
4046 // XXX value might be modified by relocation
4047 printf ("%*s[%4" PRIuMAX "] %s %" PRIu32 "\n",
4048 indent, "", (uintmax_t) offset,
4049 op_name, read_4ubyte_unaligned (dbg, data));
4057 // XXX value might be modified by relocation
4058 printf ("%*s[%4" PRIuMAX "] %s %" PRIu64 "\n",
4059 indent, "", (uintmax_t) offset,
4060 op_name, (uint64_t) read_8ubyte_unaligned (dbg, data));
4068 // XXX value might be modified by relocation
4069 printf ("%*s[%4" PRIuMAX "] %s %" PRId8 "\n",
4070 indent, "", (uintmax_t) offset,
4071 op_name, *((int8_t *) data));
4079 // XXX value might be modified by relocation
4080 printf ("%*s[%4" PRIuMAX "] %s %" PRId16 "\n",
4081 indent, "", (uintmax_t) offset,
4082 op_name, read_2sbyte_unaligned (dbg, data));
4090 // XXX value might be modified by relocation
4091 printf ("%*s[%4" PRIuMAX "] %s %" PRId32 "\n",
4092 indent, "", (uintmax_t) offset,
4093 op_name, read_4sbyte_unaligned (dbg, data));
4101 // XXX value might be modified by relocation
4102 printf ("%*s[%4" PRIuMAX "] %s %" PRId64 "\n",
4103 indent, "", (uintmax_t) offset,
4104 op_name, read_8sbyte_unaligned (dbg, data));
4112 case DW_OP_plus_uconst:
4114 const unsigned char *start = data;
4117 get_uleb128 (uleb, data); /* XXX check overrun */
4118 printf ("%*s[%4" PRIuMAX "] %s %" PRIu64 "\n",
4119 indent, "", (uintmax_t) offset, op_name, uleb);
4120 CONSUME (data - start);
4121 offset += 1 + (data - start);
4124 case DW_OP_bit_piece:
4128 get_uleb128 (uleb, data); /* XXX check overrun */
4129 get_uleb128 (uleb2, data); /* XXX check overrun */
4130 printf ("%*s[%4" PRIuMAX "] %s %" PRIu64 ", %" PRIu64 "\n",
4131 indent, "", (uintmax_t) offset, op_name, uleb, uleb2);
4132 CONSUME (data - start);
4133 offset += 1 + (data - start);
4137 case DW_OP_breg0 ... DW_OP_breg31:
4142 get_sleb128 (sleb, data); /* XXX check overrun */
4143 printf ("%*s[%4" PRIuMAX "] %s %" PRId64 "\n",
4144 indent, "", (uintmax_t) offset, op_name, sleb);
4145 CONSUME (data - start);
4146 offset += 1 + (data - start);
4152 get_uleb128 (uleb, data); /* XXX check overrun */
4153 get_sleb128 (sleb, data); /* XXX check overrun */
4154 printf ("%*s[%4" PRIuMAX "] %s %" PRIu64 " %" PRId64 "\n",
4155 indent, "", (uintmax_t) offset, op_name, uleb, sleb);
4156 CONSUME (data - start);
4157 offset += 1 + (data - start);
4162 printf ("%*s[%4" PRIuMAX "] %s %" PRIu16 "\n",
4163 indent, "", (uintmax_t) offset, op_name,
4164 read_2ubyte_unaligned (dbg, data));
4171 printf ("%*s[%4" PRIuMAX "] %s %" PRIu32 "\n",
4172 indent, "", (uintmax_t) offset, op_name,
4173 read_4ubyte_unaligned (dbg, data));
4181 printf ("%*s[%4" PRIuMAX "] %s %" PRIuMAX "\n",
4182 indent, "", (uintmax_t) offset, op_name,
4183 (uintmax_t) (offset + read_2sbyte_unaligned (dbg, data) + 3));
4189 case DW_OP_implicit_value:
4192 get_uleb128 (uleb, data); /* XXX check overrun */
4193 printf ("%*s[%4" PRIuMAX "] %s: ",
4194 indent, "", (uintmax_t) offset, op_name);
4196 print_block (uleb, data);
4198 CONSUME (data - start);
4199 offset += 1 + (data - start);
4202 case DW_OP_GNU_implicit_pointer:
4203 /* DIE offset operand. */
4205 NEED (ref_size + 1);
4207 addr = read_4ubyte_unaligned (dbg, data);
4210 assert (ref_size == 8);
4211 addr = read_8ubyte_unaligned (dbg, data);
4214 /* Byte offset operand. */
4215 get_sleb128 (sleb, data); /* XXX check overrun */
4217 printf ("%*s[%4" PRIuMAX "] %s [%6" PRIxMAX "] %+" PRId64 "\n",
4218 indent, "", (intmax_t) offset,
4219 op_name, (uintmax_t) addr, sleb);
4220 CONSUME (data - start);
4221 offset += 1 + (data - start);
4224 case DW_OP_GNU_entry_value:
4225 /* Size plus expression block. */
4228 get_uleb128 (uleb, data); /* XXX check overrun */
4229 printf ("%*s[%4" PRIuMAX "] %s:\n",
4230 indent, "", (uintmax_t) offset, op_name);
4232 print_ops (dwflmod, dbg, indent + 6, indent + 6, vers,
4233 addrsize, offset_size, cu, uleb, data);
4235 CONSUME (data - start);
4236 offset += 1 + (data - start);
4239 case DW_OP_GNU_const_type:
4240 /* uleb128 CU relative DW_TAG_base_type DIE offset, 1-byte
4241 unsigned size plus block. */
4244 get_uleb128 (uleb, data); /* XXX check overrun */
4245 if (! print_unresolved_addresses && cu != NULL)
4247 uint8_t usize = *(uint8_t *) data++;
4249 printf ("%*s[%4" PRIuMAX "] %s [%6" PRIxMAX "] ",
4250 indent, "", (uintmax_t) offset, op_name, uleb);
4251 print_block (usize, data);
4253 CONSUME (data - start);
4254 offset += 1 + (data - start);
4257 case DW_OP_GNU_regval_type:
4258 /* uleb128 register number, uleb128 CU relative
4259 DW_TAG_base_type DIE offset. */
4262 get_uleb128 (uleb, data); /* XXX check overrun */
4263 get_uleb128 (uleb2, data); /* XXX check overrun */
4264 if (! print_unresolved_addresses && cu != NULL)
4266 printf ("%*s[%4" PRIuMAX "] %s %" PRIu64 " [%6" PRIx64 "]\n",
4267 indent, "", (uintmax_t) offset, op_name, uleb, uleb2);
4268 CONSUME (data - start);
4269 offset += 1 + (data - start);
4272 case DW_OP_GNU_deref_type:
4273 /* 1-byte unsigned size of value, uleb128 CU relative
4274 DW_TAG_base_type DIE offset. */
4277 usize = *(uint8_t *) data++;
4278 get_uleb128 (uleb, data); /* XXX check overrun */
4279 if (! print_unresolved_addresses && cu != NULL)
4281 printf ("%*s[%4" PRIuMAX "] %s %" PRIu8 " [%6" PRIxMAX "]\n",
4282 indent, "", (uintmax_t) offset,
4283 op_name, usize, uleb);
4284 CONSUME (data - start);
4285 offset += 1 + (data - start);
4288 case DW_OP_GNU_convert:
4289 case DW_OP_GNU_reinterpret:
4290 /* uleb128 CU relative offset to DW_TAG_base_type, or zero
4291 for conversion to untyped. */
4294 get_uleb128 (uleb, data); /* XXX check overrun */
4295 if (uleb != 0 && ! print_unresolved_addresses && cu != NULL)
4297 printf ("%*s[%4" PRIuMAX "] %s [%6" PRIxMAX "]\n",
4298 indent, "", (uintmax_t) offset, op_name, uleb);
4299 CONSUME (data - start);
4300 offset += 1 + (data - start);
4303 case DW_OP_GNU_parameter_ref:
4304 /* 4 byte CU relative reference to the abstract optimized away
4305 DW_TAG_formal_parameter. */
4307 uintmax_t param_off = (uintmax_t) read_4ubyte_unaligned (dbg, data);
4308 if (! print_unresolved_addresses && cu != NULL)
4309 param_off += cu->start;
4310 printf ("%*s[%4" PRIuMAX "] %s [%6" PRIxMAX "]\n",
4311 indent, "", (uintmax_t) offset, op_name, param_off);
4319 printf ("%*s[%4" PRIuMAX "] %s\n",
4320 indent, "", (uintmax_t) offset, op_name);
4325 indent = indentrest;
4329 printf (gettext ("%*s[%4" PRIuMAX "] %s <TRUNCATED>\n"),
4330 indent, "", (uintmax_t) offset, op_name);
4338 Dwarf_Off offset:(64 - 3);
4342 struct Dwarf_CU *cu;
4345 #define listptr_offset_size(p) ((p)->dwarf64 ? 8 : 4)
4346 #define listptr_address_size(p) ((p)->addr64 ? 8 : 4)
4349 listptr_base (struct listptr *p)
4352 Dwarf_Die cu = CUDIE (p->cu);
4353 /* Find the base address of the compilation unit. It will normally
4354 be specified by DW_AT_low_pc. In DWARF-3 draft 4, the base
4355 address could be overridden by DW_AT_entry_pc. It's been
4356 removed, but GCC emits DW_AT_entry_pc and not DW_AT_lowpc for
4357 compilation units with discontinuous ranges. */
4358 if (unlikely (dwarf_lowpc (&cu, &base) != 0))
4360 Dwarf_Attribute attr_mem;
4361 if (dwarf_formaddr (dwarf_attr (&cu, DW_AT_entry_pc, &attr_mem),
4369 compare_listptr (const void *a, const void *b, void *arg)
4371 const char *name = arg;
4372 struct listptr *p1 = (void *) a;
4373 struct listptr *p2 = (void *) b;
4375 if (p1->offset < p2->offset)
4377 if (p1->offset > p2->offset)
4380 if (!p1->warned && !p2->warned)
4382 if (p1->addr64 != p2->addr64)
4384 p1->warned = p2->warned = true;
4386 gettext ("%s %#" PRIx64 " used with different address sizes"),
4387 name, (uint64_t) p1->offset);
4389 if (p1->dwarf64 != p2->dwarf64)
4391 p1->warned = p2->warned = true;
4393 gettext ("%s %#" PRIx64 " used with different offset sizes"),
4394 name, (uint64_t) p1->offset);
4396 if (listptr_base (p1) != listptr_base (p2))
4398 p1->warned = p2->warned = true;
4400 gettext ("%s %#" PRIx64 " used with different base addresses"),
4401 name, (uint64_t) p1->offset);
4408 struct listptr_table
4412 struct listptr *table;
4415 static struct listptr_table known_loclistptr;
4416 static struct listptr_table known_rangelistptr;
4419 reset_listptr (struct listptr_table *table)
4421 free (table->table);
4422 table->table = NULL;
4423 table->n = table->alloc = 0;
4427 notice_listptr (enum section_e section, struct listptr_table *table,
4428 uint_fast8_t address_size, uint_fast8_t offset_size,
4429 struct Dwarf_CU *cu, Dwarf_Off offset)
4431 if (print_debug_sections & section)
4433 if (table->n == table->alloc)
4435 if (table->alloc == 0)
4439 table->table = xrealloc (table->table,
4440 table->alloc * sizeof table->table[0]);
4443 struct listptr *p = &table->table[table->n++];
4445 *p = (struct listptr)
4447 .addr64 = address_size == 8,
4448 .dwarf64 = offset_size == 8,
4452 assert (p->offset == offset);
4457 sort_listptr (struct listptr_table *table, const char *name)
4460 qsort_r (table->table, table->n, sizeof table->table[0],
4461 &compare_listptr, (void *) name);
4465 skip_listptr_hole (struct listptr_table *table, size_t *idxp,
4466 uint_fast8_t *address_sizep, uint_fast8_t *offset_sizep,
4467 Dwarf_Addr *base, struct Dwarf_CU **cu, ptrdiff_t offset,
4468 unsigned char **readp, unsigned char *endp)
4473 while (*idxp < table->n && table->table[*idxp].offset < (Dwarf_Off) offset)
4476 struct listptr *p = &table->table[*idxp];
4478 if (*idxp == table->n
4479 || p->offset >= (Dwarf_Off) (endp - *readp + offset))
4482 printf (gettext (" [%6tx] <UNUSED GARBAGE IN REST OF SECTION>\n"),
4487 if (p->offset != (Dwarf_Off) offset)
4489 *readp += p->offset - offset;
4490 printf (gettext (" [%6tx] <UNUSED GARBAGE> ... %" PRIu64 " bytes ...\n"),
4491 offset, (Dwarf_Off) p->offset - offset);
4495 if (address_sizep != NULL)
4496 *address_sizep = listptr_address_size (p);
4497 if (offset_sizep != NULL)
4498 *offset_sizep = listptr_offset_size (p);
4500 *base = listptr_base (p);
4509 print_debug_abbrev_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
4510 Ebl *ebl, GElf_Ehdr *ehdr,
4511 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
4513 const size_t sh_size = (dbg->sectiondata[IDX_debug_abbrev] ?
4514 dbg->sectiondata[IDX_debug_abbrev]->d_size : 0);
4516 printf (gettext ("\nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"
4518 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
4519 (uint64_t) shdr->sh_offset);
4521 Dwarf_Off offset = 0;
4522 while (offset < sh_size)
4524 printf (gettext ("\nAbbreviation section at offset %" PRIu64 ":\n"),
4530 Dwarf_Abbrev abbrev;
4532 int res = dwarf_offabbrev (dbg, offset, &length, &abbrev);
4535 if (unlikely (res < 0))
4538 *** error while reading abbreviation: %s\n"),
4543 /* This is the NUL byte at the end of the section. */
4548 /* We know these calls can never fail. */
4549 unsigned int code = dwarf_getabbrevcode (&abbrev);
4550 unsigned int tag = dwarf_getabbrevtag (&abbrev);
4551 int has_children = dwarf_abbrevhaschildren (&abbrev);
4553 printf (gettext (" [%5u] offset: %" PRId64
4554 ", children: %s, tag: %s\n"),
4555 code, (int64_t) offset,
4556 has_children ? gettext ("yes") : gettext ("no"),
4557 dwarf_tag_name (tag));
4563 while (dwarf_getabbrevattr (&abbrev, cnt,
4564 &name, &form, &enoffset) == 0)
4566 printf (" attr: %s, form: %s, offset: %#" PRIx64 "\n",
4567 dwarf_attr_name (name), dwarf_form_name (form),
4568 (uint64_t) enoffset);
4579 /* Print content of DWARF .debug_aranges section. We fortunately do
4580 not have to know a bit about the structure of the section, libdwarf
4581 takes care of it. */
4583 print_decoded_aranges_section (Ebl *ebl, GElf_Ehdr *ehdr, Elf_Scn *scn,
4584 GElf_Shdr *shdr, Dwarf *dbg)
4586 Dwarf_Aranges *aranges;
4588 if (unlikely (dwarf_getaranges (dbg, &aranges, &cnt) != 0))
4590 error (0, 0, gettext ("cannot get .debug_aranges content: %s"),
4595 GElf_Shdr glink_mem;
4597 glink = gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link), &glink_mem);
4600 error (0, 0, gettext ("invalid sh_link value in section %Zu"),
4605 printf (ngettext ("\
4606 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 " contains %zu entry:\n",
4608 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 " contains %zu entries:\n",
4610 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
4611 (uint64_t) shdr->sh_offset, cnt);
4613 /* Compute floor(log16(cnt)). */
4622 for (size_t n = 0; n < cnt; ++n)
4624 Dwarf_Arange *runp = dwarf_onearange (aranges, n);
4625 if (unlikely (runp == NULL))
4627 printf ("cannot get arange %zu: %s\n", n, dwarf_errmsg (-1));
4635 if (unlikely (dwarf_getarangeinfo (runp, &start, &length, &offset) != 0))
4636 printf (gettext (" [%*zu] ???\n"), digits, n);
4638 printf (gettext (" [%*zu] start: %0#*" PRIx64
4639 ", length: %5" PRIu64 ", CU DIE offset: %6"
4641 digits, n, ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 10 : 18,
4642 (uint64_t) start, (uint64_t) length, (int64_t) offset);
4647 /* Print content of DWARF .debug_aranges section. */
4649 print_debug_aranges_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
4650 Ebl *ebl, GElf_Ehdr *ehdr, Elf_Scn *scn,
4651 GElf_Shdr *shdr, Dwarf *dbg)
4655 print_decoded_aranges_section (ebl, ehdr, scn, shdr, dbg);
4659 Elf_Data *data = dbg->sectiondata[IDX_debug_aranges];
4661 if (unlikely (data == NULL))
4663 error (0, 0, gettext ("cannot get .debug_aranges content: %s"),
4669 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
4670 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
4671 (uint64_t) shdr->sh_offset);
4673 const unsigned char *readp = data->d_buf;
4674 const unsigned char *readendp = readp + data->d_size;
4676 while (readp < readendp)
4678 const unsigned char *hdrstart = readp;
4679 size_t start_offset = hdrstart - (const unsigned char *) data->d_buf;
4681 printf (gettext ("\nTable at offset %Zu:\n"), start_offset);
4682 if (readp + 4 > readendp)
4685 error (0, 0, gettext ("invalid data in section [%zu] '%s'"),
4686 elf_ndxscn (scn), section_name (ebl, ehdr, shdr));
4690 Dwarf_Word length = read_4ubyte_unaligned_inc (dbg, readp);
4691 unsigned int length_bytes = 4;
4692 if (length == DWARF3_LENGTH_64_BIT)
4694 if (readp + 8 > readendp)
4696 length = read_8ubyte_unaligned_inc (dbg, readp);
4700 const unsigned char *nexthdr = readp + length;
4701 printf (gettext ("\n Length: %6" PRIu64 "\n"),
4704 if (unlikely ((ptrdiff_t) length > readendp - readp))
4710 if (readp + 2 > readendp)
4712 uint_fast16_t version = read_2ubyte_unaligned_inc (dbg, readp);
4713 printf (gettext (" DWARF version: %6" PRIuFAST16 "\n"),
4717 error (0, 0, gettext ("unsupported aranges version"));
4722 if (readp + length_bytes > readendp)
4724 if (length_bytes == 8)
4725 offset = read_8ubyte_unaligned_inc (dbg, readp);
4727 offset = read_4ubyte_unaligned_inc (dbg, readp);
4728 printf (gettext (" CU offset: %6" PRIx64 "\n"),
4731 if (readp + 1 > readendp)
4733 unsigned int address_size = *readp++;
4734 printf (gettext (" Address size: %6" PRIu64 "\n"),
4735 (uint64_t) address_size);
4736 if (address_size != 4 && address_size != 8)
4738 error (0, 0, gettext ("unsupported address size"));
4742 unsigned int segment_size = *readp++;
4743 printf (gettext (" Segment size: %6" PRIu64 "\n\n"),
4744 (uint64_t) segment_size);
4745 if (segment_size != 0 && segment_size != 4 && segment_size != 8)
4747 error (0, 0, gettext ("unsupported segment size"));
4751 /* Round the address to the next multiple of 2*address_size. */
4752 readp += ((2 * address_size - ((readp - hdrstart) % (2 * address_size)))
4753 % (2 * address_size));
4755 while (readp < nexthdr)
4757 Dwarf_Word range_address;
4758 Dwarf_Word range_length;
4759 Dwarf_Word segment = 0;
4760 if (readp + 2 * address_size + segment_size > readendp)
4762 if (address_size == 4)
4764 range_address = read_4ubyte_unaligned_inc (dbg, readp);
4765 range_length = read_4ubyte_unaligned_inc (dbg, readp);
4769 range_address = read_8ubyte_unaligned_inc (dbg, readp);
4770 range_length = read_8ubyte_unaligned_inc (dbg, readp);
4773 if (segment_size == 4)
4774 segment = read_4ubyte_unaligned_inc (dbg, readp);
4775 else if (segment_size == 8)
4776 segment = read_8ubyte_unaligned_inc (dbg, readp);
4778 if (range_address == 0 && range_length == 0 && segment == 0)
4781 char *b = format_dwarf_addr (dwflmod, address_size, range_address,
4783 char *e = format_dwarf_addr (dwflmod, address_size,
4784 range_address + range_length - 1,
4786 if (segment_size != 0)
4787 printf (gettext (" %s..%s (%" PRIx64 ")\n"), b, e,
4788 (uint64_t) segment);
4790 printf (gettext (" %s..%s\n"), b, e);
4796 if (readp != nexthdr)
4798 size_t padding = nexthdr - readp;
4799 printf (gettext (" %Zu padding bytes\n"), padding);
4806 /* Print content of DWARF .debug_ranges section. */
4808 print_debug_ranges_section (Dwfl_Module *dwflmod,
4809 Ebl *ebl, GElf_Ehdr *ehdr,
4810 Elf_Scn *scn, GElf_Shdr *shdr,
4813 Elf_Data *data = dbg->sectiondata[IDX_debug_ranges];
4815 if (unlikely (data == NULL))
4817 error (0, 0, gettext ("cannot get .debug_ranges content: %s"),
4823 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
4824 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
4825 (uint64_t) shdr->sh_offset);
4827 sort_listptr (&known_rangelistptr, "rangelistptr");
4828 size_t listptr_idx = 0;
4830 uint_fast8_t address_size = ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8;
4833 Dwarf_Addr base = 0;
4834 unsigned char *const endp = (unsigned char *) data->d_buf + data->d_size;
4835 unsigned char *readp = data->d_buf;
4836 while (readp < endp)
4838 ptrdiff_t offset = readp - (unsigned char *) data->d_buf;
4840 if (first && skip_listptr_hole (&known_rangelistptr, &listptr_idx,
4841 &address_size, NULL, &base, NULL,
4842 offset, &readp, endp))
4845 if (unlikely (data->d_size - offset < (size_t) address_size * 2))
4847 printf (gettext (" [%6tx] <INVALID DATA>\n"), offset);
4853 if (address_size == 8)
4855 begin = read_8ubyte_unaligned_inc (dbg, readp);
4856 end = read_8ubyte_unaligned_inc (dbg, readp);
4860 begin = read_4ubyte_unaligned_inc (dbg, readp);
4861 end = read_4ubyte_unaligned_inc (dbg, readp);
4862 if (begin == (Dwarf_Addr) (uint32_t) -1)
4863 begin = (Dwarf_Addr) -1l;
4866 if (begin == (Dwarf_Addr) -1l) /* Base address entry. */
4868 char *b = format_dwarf_addr (dwflmod, address_size, end, end);
4869 printf (gettext (" [%6tx] base address %s\n"), offset, b);
4873 else if (begin == 0 && end == 0) /* End of list entry. */
4876 printf (gettext (" [%6tx] empty list\n"), offset);
4881 char *b = format_dwarf_addr (dwflmod, address_size, base + begin,
4883 char *e = format_dwarf_addr (dwflmod, address_size, base + end,
4885 /* We have an address range entry. */
4886 if (first) /* First address range entry in a list. */
4887 printf (gettext (" [%6tx] %s..%s\n"), offset, b, e);
4889 printf (gettext (" %s..%s\n"), b, e);
4898 #define REGNAMESZ 16
4900 register_info (Ebl *ebl, unsigned int regno, const Ebl_Register_Location *loc,
4901 char name[REGNAMESZ], int *bits, int *type)
4906 ssize_t n = ebl_register_info (ebl, regno, name, REGNAMESZ, &pfx, &set,
4907 bits ?: &ignore, type ?: &ignore);
4911 snprintf (name, REGNAMESZ, "reg%u", loc->regno);
4913 snprintf (name, REGNAMESZ, "??? 0x%x", regno);
4915 *bits = loc != NULL ? loc->bits : 0;
4917 *type = DW_ATE_unsigned;
4918 set = "??? unrecognized";
4922 if (bits != NULL && *bits <= 0)
4923 *bits = loc != NULL ? loc->bits : 0;
4924 if (type != NULL && *type == DW_ATE_void)
4925 *type = DW_ATE_unsigned;
4932 print_cfa_program (const unsigned char *readp, const unsigned char *const endp,
4933 Dwarf_Word vma_base, unsigned int code_align,
4935 unsigned int version, unsigned int ptr_size,
4936 Dwfl_Module *dwflmod, Ebl *ebl, Dwarf *dbg)
4938 char regnamebuf[REGNAMESZ];
4939 const char *regname (unsigned int regno)
4941 register_info (ebl, regno, NULL, regnamebuf, NULL, NULL);
4945 puts ("\n Program:");
4946 Dwarf_Word pc = vma_base;
4947 while (readp < endp)
4949 unsigned int opcode = *readp++;
4951 if (opcode < DW_CFA_advance_loc)
4952 /* Extended opcode. */
4963 case DW_CFA_set_loc:
4964 // XXX overflow check
4965 get_uleb128 (op1, readp);
4967 printf (" set_loc %" PRIu64 "\n", op1 * code_align);
4969 case DW_CFA_advance_loc1:
4970 printf (" advance_loc1 %u to %#" PRIx64 "\n",
4971 *readp, pc += *readp * code_align);
4974 case DW_CFA_advance_loc2:
4975 op1 = read_2ubyte_unaligned_inc (dbg, readp);
4976 printf (" advance_loc2 %" PRIu64 " to %#" PRIx64 "\n",
4977 op1, pc += op1 * code_align);
4979 case DW_CFA_advance_loc4:
4980 op1 = read_4ubyte_unaligned_inc (dbg, readp);
4981 printf (" advance_loc4 %" PRIu64 " to %#" PRIx64 "\n",
4982 op1, pc += op1 * code_align);
4984 case DW_CFA_offset_extended:
4985 // XXX overflow check
4986 get_uleb128 (op1, readp);
4987 get_uleb128 (op2, readp);
4988 printf (" offset_extended r%" PRIu64 " (%s) at cfa%+" PRId64
4990 op1, regname (op1), op2 * data_align);
4992 case DW_CFA_restore_extended:
4993 // XXX overflow check
4994 get_uleb128 (op1, readp);
4995 printf (" restore_extended r%" PRIu64 " (%s)\n",
4996 op1, regname (op1));
4998 case DW_CFA_undefined:
4999 // XXX overflow check
5000 get_uleb128 (op1, readp);
5001 printf (" undefined r%" PRIu64 " (%s)\n", op1, regname (op1));
5003 case DW_CFA_same_value:
5004 // XXX overflow check
5005 get_uleb128 (op1, readp);
5006 printf (" same_value r%" PRIu64 " (%s)\n", op1, regname (op1));
5008 case DW_CFA_register:
5009 // XXX overflow check
5010 get_uleb128 (op1, readp);
5011 get_uleb128 (op2, readp);
5012 printf (" register r%" PRIu64 " (%s) in r%" PRIu64 " (%s)\n",
5013 op1, regname (op1), op2, regname (op2));
5015 case DW_CFA_remember_state:
5016 puts (" remember_state");
5018 case DW_CFA_restore_state:
5019 puts (" restore_state");
5021 case DW_CFA_def_cfa:
5022 // XXX overflow check
5023 get_uleb128 (op1, readp);
5024 get_uleb128 (op2, readp);
5025 printf (" def_cfa r%" PRIu64 " (%s) at offset %" PRIu64 "\n",
5026 op1, regname (op1), op2);
5028 case DW_CFA_def_cfa_register:
5029 // XXX overflow check
5030 get_uleb128 (op1, readp);
5031 printf (" def_cfa_register r%" PRIu64 " (%s)\n",
5032 op1, regname (op1));
5034 case DW_CFA_def_cfa_offset:
5035 // XXX overflow check
5036 get_uleb128 (op1, readp);
5037 printf (" def_cfa_offset %" PRIu64 "\n", op1);
5039 case DW_CFA_def_cfa_expression:
5040 // XXX overflow check
5041 get_uleb128 (op1, readp); /* Length of DW_FORM_block. */
5042 printf (" def_cfa_expression %" PRIu64 "\n", op1);
5043 if ((uint64_t) (endp - readp) < op1)
5046 fputs (gettext (" <INVALID DATA>\n"), stdout);
5049 print_ops (dwflmod, dbg, 10, 10, version, ptr_size, 0, NULL,
5053 case DW_CFA_expression:
5054 // XXX overflow check
5055 get_uleb128 (op1, readp);
5056 get_uleb128 (op2, readp); /* Length of DW_FORM_block. */
5057 printf (" expression r%" PRIu64 " (%s) \n",
5058 op1, regname (op1));
5059 if ((uint64_t) (endp - readp) < op2)
5061 print_ops (dwflmod, dbg, 10, 10, version, ptr_size, 0, NULL,
5065 case DW_CFA_offset_extended_sf:
5066 // XXX overflow check
5067 get_uleb128 (op1, readp);
5068 get_sleb128 (sop2, readp);
5069 printf (" offset_extended_sf r%" PRIu64 " (%s) at cfa%+"
5071 op1, regname (op1), sop2 * data_align);
5073 case DW_CFA_def_cfa_sf:
5074 // XXX overflow check
5075 get_uleb128 (op1, readp);
5076 get_sleb128 (sop2, readp);
5077 printf (" def_cfa_sf r%" PRIu64 " (%s) at offset %" PRId64 "\n",
5078 op1, regname (op1), sop2 * data_align);
5080 case DW_CFA_def_cfa_offset_sf:
5081 // XXX overflow check
5082 get_sleb128 (sop1, readp);
5083 printf (" def_cfa_offset_sf %" PRId64 "\n", sop1 * data_align);
5085 case DW_CFA_val_offset:
5086 // XXX overflow check
5087 get_uleb128 (op1, readp);
5088 get_uleb128 (op2, readp);
5089 printf (" val_offset %" PRIu64 " at offset %" PRIu64 "\n",
5090 op1, op2 * data_align);
5092 case DW_CFA_val_offset_sf:
5093 // XXX overflow check
5094 get_uleb128 (op1, readp);
5095 get_sleb128 (sop2, readp);
5096 printf (" val_offset_sf %" PRIu64 " at offset %" PRId64 "\n",
5097 op1, sop2 * data_align);
5099 case DW_CFA_val_expression:
5100 // XXX overflow check
5101 get_uleb128 (op1, readp);
5102 get_uleb128 (op2, readp); /* Length of DW_FORM_block. */
5103 printf (" val_expression r%" PRIu64 " (%s)\n",
5104 op1, regname (op1));
5105 if ((uint64_t) (endp - readp) < op2)
5107 print_ops (dwflmod, dbg, 10, 10, version, ptr_size, 0,
5111 case DW_CFA_MIPS_advance_loc8:
5112 op1 = read_8ubyte_unaligned_inc (dbg, readp);
5113 printf (" MIPS_advance_loc8 %" PRIu64 " to %#" PRIx64 "\n",
5114 op1, pc += op1 * code_align);
5116 case DW_CFA_GNU_window_save:
5117 puts (" GNU_window_save");
5119 case DW_CFA_GNU_args_size:
5120 // XXX overflow check
5121 get_uleb128 (op1, readp);
5122 printf (" args_size %" PRIu64 "\n", op1);
5125 printf (" ??? (%u)\n", opcode);
5128 else if (opcode < DW_CFA_offset)
5129 printf (" advance_loc %u to %#" PRIx64 "\n",
5130 opcode & 0x3f, pc += (opcode & 0x3f) * code_align);
5131 else if (opcode < DW_CFA_restore)
5134 // XXX overflow check
5135 get_uleb128 (offset, readp);
5136 printf (" offset r%u (%s) at cfa%+" PRId64 "\n",
5137 opcode & 0x3f, regname (opcode & 0x3f), offset * data_align);
5140 printf (" restore r%u (%s)\n",
5141 opcode & 0x3f, regname (opcode & 0x3f));
5147 encoded_ptr_size (int encoding, unsigned int ptr_size)
5149 switch (encoding & 7)
5151 case DW_EH_PE_udata4:
5153 case DW_EH_PE_udata8:
5159 fprintf (stderr, "Unsupported pointer encoding: %#x, "
5160 "assuming pointer size of %d.\n", encoding, ptr_size);
5166 print_encoding (unsigned int val)
5170 case DW_EH_PE_absptr:
5171 fputs ("absptr", stdout);
5173 case DW_EH_PE_uleb128:
5174 fputs ("uleb128", stdout);
5176 case DW_EH_PE_udata2:
5177 fputs ("udata2", stdout);
5179 case DW_EH_PE_udata4:
5180 fputs ("udata4", stdout);
5182 case DW_EH_PE_udata8:
5183 fputs ("udata8", stdout);
5185 case DW_EH_PE_sleb128:
5186 fputs ("sleb128", stdout);
5188 case DW_EH_PE_sdata2:
5189 fputs ("sdata2", stdout);
5191 case DW_EH_PE_sdata4:
5192 fputs ("sdata4", stdout);
5194 case DW_EH_PE_sdata8:
5195 fputs ("sdata8", stdout);
5198 /* We did not use any of the bits after all. */
5207 print_relinfo (unsigned int val)
5211 case DW_EH_PE_pcrel:
5212 fputs ("pcrel", stdout);
5214 case DW_EH_PE_textrel:
5215 fputs ("textrel", stdout);
5217 case DW_EH_PE_datarel:
5218 fputs ("datarel", stdout);
5220 case DW_EH_PE_funcrel:
5221 fputs ("funcrel", stdout);
5223 case DW_EH_PE_aligned:
5224 fputs ("aligned", stdout);
5235 print_encoding_base (const char *pfx, unsigned int fde_encoding)
5237 printf ("(%s", pfx);
5239 if (fde_encoding == DW_EH_PE_omit)
5243 unsigned int w = fde_encoding;
5245 w = print_encoding (w);
5249 if (w != fde_encoding)
5250 fputc_unlocked (' ', stdout);
5252 w = print_relinfo (w);
5256 printf ("%s%x", w != fde_encoding ? " " : "", w);
5263 static const unsigned char *
5264 read_encoded (unsigned int encoding, const unsigned char *readp,
5265 const unsigned char *const endp, uint64_t *res, Dwarf *dbg)
5267 if ((encoding & 0xf) == DW_EH_PE_absptr)
5268 encoding = gelf_getclass (dbg->elf) == ELFCLASS32
5269 ? DW_EH_PE_udata4 : DW_EH_PE_udata8;
5271 switch (encoding & 0xf)
5273 case DW_EH_PE_uleb128:
5274 // XXX buffer overrun check
5275 get_uleb128 (*res, readp);
5277 case DW_EH_PE_sleb128:
5278 // XXX buffer overrun check
5279 get_sleb128 (*res, readp);
5281 case DW_EH_PE_udata2:
5282 if (readp + 2 > endp)
5284 *res = read_2ubyte_unaligned_inc (dbg, readp);
5286 case DW_EH_PE_udata4:
5287 if (readp + 4 > endp)
5289 *res = read_4ubyte_unaligned_inc (dbg, readp);
5291 case DW_EH_PE_udata8:
5292 if (readp + 8 > endp)
5294 *res = read_8ubyte_unaligned_inc (dbg, readp);
5296 case DW_EH_PE_sdata2:
5297 if (readp + 2 > endp)
5299 *res = read_2sbyte_unaligned_inc (dbg, readp);
5301 case DW_EH_PE_sdata4:
5302 if (readp + 4 > endp)
5304 *res = read_4sbyte_unaligned_inc (dbg, readp);
5306 case DW_EH_PE_sdata8:
5307 if (readp + 8 > endp)
5309 *res = read_8sbyte_unaligned_inc (dbg, readp);
5314 gettext ("invalid encoding"));
5322 print_debug_frame_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
5323 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
5326 /* We know this call will succeed since it did in the caller. */
5327 (void) elf_getshdrstrndx (ebl->elf, &shstrndx);
5328 const char *scnname = elf_strptr (ebl->elf, shstrndx, shdr->sh_name);
5330 /* Needed if we find PC-relative addresses. */
5332 if (dwfl_module_getelf (dwflmod, &bias) == NULL)
5334 error (0, 0, gettext ("cannot get ELF: %s"), dwfl_errmsg (-1));
5338 bool is_eh_frame = strcmp (scnname, ".eh_frame") == 0;
5339 Elf_Data *data = (is_eh_frame
5340 ? elf_rawdata (scn, NULL)
5341 : dbg->sectiondata[IDX_debug_frame]);
5343 if (unlikely (data == NULL))
5345 error (0, 0, gettext ("cannot get %s content: %s"),
5346 scnname, elf_errmsg (-1));
5352 \nCall frame information section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
5353 elf_ndxscn (scn), scnname, (uint64_t) shdr->sh_offset);
5356 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
5357 elf_ndxscn (scn), scnname, (uint64_t) shdr->sh_offset);
5361 ptrdiff_t cie_offset;
5362 const char *augmentation;
5363 unsigned int code_alignment_factor;
5364 unsigned int data_alignment_factor;
5365 uint8_t address_size;
5366 uint8_t fde_encoding;
5367 uint8_t lsda_encoding;
5368 struct cieinfo *next;
5371 const unsigned char *readp = data->d_buf;
5372 const unsigned char *const dataend = ((unsigned char *) data->d_buf
5374 while (readp < dataend)
5376 if (unlikely (readp + 4 > dataend))
5379 error (0, 0, gettext ("invalid data in section [%zu] '%s'"),
5380 elf_ndxscn (scn), scnname);
5384 /* At the beginning there must be a CIE. There can be multiple,
5385 hence we test tis in a loop. */
5386 ptrdiff_t offset = readp - (unsigned char *) data->d_buf;
5388 Dwarf_Word unit_length = read_4ubyte_unaligned_inc (dbg, readp);
5389 unsigned int length = 4;
5390 if (unlikely (unit_length == 0xffffffff))
5392 if (unlikely (readp + 8 > dataend))
5395 unit_length = read_8ubyte_unaligned_inc (dbg, readp);
5399 if (unlikely (unit_length == 0))
5401 printf (gettext ("\n [%6tx] Zero terminator\n"), offset);
5405 Dwarf_Word maxsize = dataend - readp;
5406 if (unlikely (unit_length > maxsize))
5409 unsigned int ptr_size = ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8;
5411 ptrdiff_t start = readp - (unsigned char *) data->d_buf;
5412 const unsigned char *const cieend = readp + unit_length;
5413 if (unlikely (cieend > dataend || readp + 8 > dataend))
5419 cie_id = read_4ubyte_unaligned_inc (dbg, readp);
5420 if (!is_eh_frame && cie_id == DW_CIE_ID_32)
5421 cie_id = DW_CIE_ID_64;
5424 cie_id = read_8ubyte_unaligned_inc (dbg, readp);
5426 uint_fast8_t version = 2;
5427 unsigned int code_alignment_factor;
5428 int data_alignment_factor;
5429 unsigned int fde_encoding = 0;
5430 unsigned int lsda_encoding = 0;
5431 Dwarf_Word initial_location = 0;
5432 Dwarf_Word vma_base = 0;
5434 if (cie_id == (is_eh_frame ? 0 : DW_CIE_ID_64))
5437 const char *const augmentation = (const char *) readp;
5438 readp = memchr (readp, '\0', cieend - readp);
5439 if (unlikely (readp == NULL))
5443 uint_fast8_t segment_size = 0;
5446 if (cieend - readp < 5)
5448 ptr_size = *readp++;
5449 segment_size = *readp++;
5452 // XXX Check overflow
5453 get_uleb128 (code_alignment_factor, readp);
5454 // XXX Check overflow
5455 get_sleb128 (data_alignment_factor, readp);
5457 /* In some variant for unwind data there is another field. */
5458 if (strcmp (augmentation, "eh") == 0)
5459 readp += ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8;
5461 unsigned int return_address_register;
5462 if (unlikely (version == 1))
5463 return_address_register = *readp++;
5465 // XXX Check overflow
5466 get_uleb128 (return_address_register, readp);
5468 printf ("\n [%6tx] CIE length=%" PRIu64 "\n"
5469 " CIE_id: %" PRIu64 "\n"
5471 " augmentation: \"%s\"\n",
5472 offset, (uint64_t) unit_length, (uint64_t) cie_id,
5473 version, augmentation);
5475 printf (" address_size: %u\n"
5476 " segment_size: %u\n",
5477 ptr_size, segment_size);
5478 printf (" code_alignment_factor: %u\n"
5479 " data_alignment_factor: %d\n"
5480 " return_address_register: %u\n",
5481 code_alignment_factor,
5482 data_alignment_factor, return_address_register);
5484 if (augmentation[0] == 'z')
5486 unsigned int augmentationlen;
5487 get_uleb128 (augmentationlen, readp);
5489 if (augmentationlen > (size_t) (dataend - readp))
5491 error (0, 0, gettext ("invalid augmentation length"));
5496 const char *hdr = "Augmentation data:";
5497 const char *cp = augmentation + 1;
5500 printf (" %-26s%#x ", hdr, *readp);
5505 fde_encoding = *readp++;
5506 print_encoding_base (gettext ("FDE address encoding: "),
5509 else if (*cp == 'L')
5511 lsda_encoding = *readp++;
5512 print_encoding_base (gettext ("LSDA pointer encoding: "),
5515 else if (*cp == 'P')
5517 /* Personality. This field usually has a relocation
5518 attached pointing to __gcc_personality_v0. */
5519 const unsigned char *startp = readp;
5520 unsigned int encoding = *readp++;
5522 readp = read_encoded (encoding, readp,
5523 readp - 1 + augmentationlen,
5526 while (++startp < readp)
5527 printf ("%#x ", *startp);
5530 print_encoding (encoding);
5532 switch (encoding & 0xf)
5534 case DW_EH_PE_sleb128:
5535 case DW_EH_PE_sdata2:
5536 case DW_EH_PE_sdata4:
5537 printf ("%" PRId64 ")\n", val);
5540 printf ("%#" PRIx64 ")\n", val);
5545 printf ("(%x)\n", *readp++);
5551 if (likely (ptr_size == 4 || ptr_size == 8))
5553 struct cieinfo *newp = alloca (sizeof (*newp));
5554 newp->cie_offset = offset;
5555 newp->augmentation = augmentation;
5556 newp->fde_encoding = fde_encoding;
5557 newp->lsda_encoding = lsda_encoding;
5558 newp->address_size = ptr_size;
5559 newp->code_alignment_factor = code_alignment_factor;
5560 newp->data_alignment_factor = data_alignment_factor;
5567 struct cieinfo *cie = cies;
5570 ? start - (ptrdiff_t) cie_id == cie->cie_offset
5571 : (ptrdiff_t) cie_id == cie->cie_offset)
5575 if (unlikely (cie == NULL))
5577 puts ("invalid CIE reference in FDE");
5581 /* Initialize from CIE data. */
5582 fde_encoding = cie->fde_encoding;
5583 lsda_encoding = cie->lsda_encoding;
5584 ptr_size = encoded_ptr_size (fde_encoding, cie->address_size);
5585 code_alignment_factor = cie->code_alignment_factor;
5586 data_alignment_factor = cie->data_alignment_factor;
5588 const unsigned char *base = readp;
5589 // XXX There are sometimes relocations for this value
5590 initial_location = read_addr_unaligned_inc (ptr_size, dbg, readp);
5591 Dwarf_Word address_range
5592 = read_addr_unaligned_inc (ptr_size, dbg, readp);
5594 /* pcrel for an FDE address is relative to the runtime
5595 address of the start_address field itself. Sign extend
5596 if necessary to make sure the calculation is done on the
5597 full 64 bit address even when initial_location only holds
5598 the lower 32 bits. */
5599 Dwarf_Addr pc_start = initial_location;
5601 pc_start = (uint64_t) (int32_t) pc_start;
5602 if ((fde_encoding & 0x70) == DW_EH_PE_pcrel)
5603 pc_start += ((uint64_t) shdr->sh_addr
5604 + (base - (const unsigned char *) data->d_buf)
5607 char *a = format_dwarf_addr (dwflmod, cie->address_size,
5608 pc_start, initial_location);
5609 printf ("\n [%6tx] FDE length=%" PRIu64 " cie=[%6tx]\n"
5610 " CIE_pointer: %" PRIu64 "\n"
5611 " initial_location: %s",
5612 offset, (uint64_t) unit_length,
5613 cie->cie_offset, (uint64_t) cie_id, a);
5615 if ((fde_encoding & 0x70) == DW_EH_PE_pcrel)
5617 vma_base = (((uint64_t) shdr->sh_offset
5618 + (base - (const unsigned char *) data->d_buf)
5619 + (uint64_t) initial_location)
5621 ? UINT64_C (0xffffffff)
5622 : UINT64_C (0xffffffffffffffff)));
5623 printf (gettext (" (offset: %#" PRIx64 ")"),
5624 (uint64_t) vma_base);
5627 printf ("\n address_range: %#" PRIx64,
5628 (uint64_t) address_range);
5629 if ((fde_encoding & 0x70) == DW_EH_PE_pcrel)
5630 printf (gettext (" (end offset: %#" PRIx64 ")"),
5631 ((uint64_t) vma_base + (uint64_t) address_range)
5633 ? UINT64_C (0xffffffff)
5634 : UINT64_C (0xffffffffffffffff)));
5637 if (cie->augmentation[0] == 'z')
5639 unsigned int augmentationlen;
5640 get_uleb128 (augmentationlen, readp);
5642 if (augmentationlen > (size_t) (dataend - readp))
5644 error (0, 0, gettext ("invalid augmentation length"));
5649 if (augmentationlen > 0)
5651 const char *hdr = "Augmentation data:";
5652 const char *cp = cie->augmentation + 1;
5658 uint64_t lsda_pointer;
5659 const unsigned char *p
5660 = read_encoded (lsda_encoding, &readp[u],
5661 &readp[augmentationlen],
5662 &lsda_pointer, dbg);
5665 %-26sLSDA pointer: %#" PRIx64 "\n"),
5672 while (u < augmentationlen)
5674 printf (" %-26s%#x\n", hdr, readp[u++]);
5679 readp += augmentationlen;
5683 /* Handle the initialization instructions. */
5684 if (ptr_size != 4 && ptr_size !=8)
5685 printf ("invalid CIE pointer size (%u), must be 4 or 8.\n", ptr_size);
5687 print_cfa_program (readp, cieend, vma_base, code_alignment_factor,
5688 data_alignment_factor, version, ptr_size,
5697 Dwfl_Module *dwflmod;
5702 unsigned int version;
5703 unsigned int addrsize;
5704 unsigned int offset_size;
5705 struct Dwarf_CU *cu;
5710 attr_callback (Dwarf_Attribute *attrp, void *arg)
5712 struct attrcb_args *cbargs = (struct attrcb_args *) arg;
5713 const int level = cbargs->level;
5715 unsigned int attr = dwarf_whatattr (attrp);
5716 if (unlikely (attr == 0))
5718 if (!cbargs->silent)
5719 error (0, 0, gettext ("cannot get attribute code: %s"),
5721 return DWARF_CB_ABORT;
5724 unsigned int form = dwarf_whatform (attrp);
5725 if (unlikely (form == 0))
5727 if (!cbargs->silent)
5728 error (0, 0, gettext ("cannot get attribute form: %s"),
5730 return DWARF_CB_ABORT;
5736 if (!cbargs->silent)
5739 if (unlikely (dwarf_formaddr (attrp, &addr) != 0))
5742 if (!cbargs->silent)
5743 error (0, 0, gettext ("cannot get attribute value: %s"),
5745 return DWARF_CB_ABORT;
5747 char *a = format_dwarf_addr (cbargs->dwflmod, cbargs->addrsize,
5749 printf (" %*s%-20s (%s) %s\n",
5750 (int) (level * 2), "", dwarf_attr_name (attr),
5751 dwarf_form_name (form), a);
5756 case DW_FORM_indirect:
5758 case DW_FORM_string:
5759 case DW_FORM_GNU_strp_alt:
5762 const char *str = dwarf_formstring (attrp);
5763 if (unlikely (str == NULL))
5765 printf (" %*s%-20s (%s) \"%s\"\n",
5766 (int) (level * 2), "", dwarf_attr_name (attr),
5767 dwarf_form_name (form), str);
5770 case DW_FORM_ref_addr:
5771 case DW_FORM_ref_udata:
5776 case DW_FORM_GNU_ref_alt:
5780 if (unlikely (dwarf_formref_die (attrp, &ref) == NULL))
5783 printf (" %*s%-20s (%s) [%6" PRIxMAX "]\n",
5784 (int) (level * 2), "", dwarf_attr_name (attr),
5785 dwarf_form_name (form), (uintmax_t) dwarf_dieoffset (&ref));
5788 case DW_FORM_ref_sig8:
5791 printf (" %*s%-20s (%s) {%6" PRIx64 "}\n",
5792 (int) (level * 2), "", dwarf_attr_name (attr),
5793 dwarf_form_name (form),
5794 (uint64_t) read_8ubyte_unaligned (attrp->cu->dbg, attrp->valp));
5797 case DW_FORM_sec_offset:
5803 case DW_FORM_data1:;
5805 if (unlikely (dwarf_formudata (attrp, &num) != 0))
5808 const char *valuestr = NULL;
5811 /* This case can take either a constant or a loclistptr. */
5812 case DW_AT_data_member_location:
5813 if (form != DW_FORM_sec_offset
5814 && (cbargs->version >= 4
5815 || (form != DW_FORM_data4 && form != DW_FORM_data8)))
5817 if (!cbargs->silent)
5818 printf (" %*s%-20s (%s) %" PRIxMAX "\n",
5819 (int) (level * 2), "", dwarf_attr_name (attr),
5820 dwarf_form_name (form), (uintmax_t) num);
5823 /* else fallthrough */
5825 /* These cases always take a loclistptr and no constant. */
5826 case DW_AT_location:
5827 case DW_AT_data_location:
5828 case DW_AT_vtable_elem_location:
5829 case DW_AT_string_length:
5830 case DW_AT_use_location:
5831 case DW_AT_frame_base:
5832 case DW_AT_return_addr:
5833 case DW_AT_static_link:
5834 case DW_AT_GNU_call_site_value:
5835 case DW_AT_GNU_call_site_data_value:
5836 case DW_AT_GNU_call_site_target:
5837 case DW_AT_GNU_call_site_target_clobbered:
5838 notice_listptr (section_loc, &known_loclistptr,
5839 cbargs->addrsize, cbargs->offset_size,
5841 if (!cbargs->silent)
5842 printf (" %*s%-20s (%s) location list [%6" PRIxMAX "]\n",
5843 (int) (level * 2), "", dwarf_attr_name (attr),
5844 dwarf_form_name (form), (uintmax_t) num);
5848 notice_listptr (section_ranges, &known_rangelistptr,
5849 cbargs->addrsize, cbargs->offset_size,
5851 if (!cbargs->silent)
5852 printf (" %*s%-20s (%s) range list [%6" PRIxMAX "]\n",
5853 (int) (level * 2), "", dwarf_attr_name (attr),
5854 dwarf_form_name (form), (uintmax_t) num);
5857 case DW_AT_language:
5858 valuestr = dwarf_lang_name (num);
5860 case DW_AT_encoding:
5861 valuestr = dwarf_encoding_name (num);
5863 case DW_AT_accessibility:
5864 valuestr = dwarf_access_name (num);
5866 case DW_AT_visibility:
5867 valuestr = dwarf_visibility_name (num);
5869 case DW_AT_virtuality:
5870 valuestr = dwarf_virtuality_name (num);
5872 case DW_AT_identifier_case:
5873 valuestr = dwarf_identifier_case_name (num);
5875 case DW_AT_calling_convention:
5876 valuestr = dwarf_calling_convention_name (num);
5879 valuestr = dwarf_inline_name (num);
5881 case DW_AT_ordering:
5882 valuestr = dwarf_ordering_name (num);
5884 case DW_AT_discr_list:
5885 valuestr = dwarf_discr_list_name (num);
5895 /* When highpc is in constant form it is relative to lowpc.
5896 In that case also show the address. */
5898 if (attr == DW_AT_high_pc && dwarf_highpc (cbargs->die, &highpc) == 0)
5900 char *a = format_dwarf_addr (cbargs->dwflmod, cbargs->addrsize,
5902 printf (" %*s%-20s (%s) %" PRIuMAX " (%s)\n",
5903 (int) (level * 2), "", dwarf_attr_name (attr),
5904 dwarf_form_name (form), (uintmax_t) num, a);
5909 Dwarf_Sword snum = 0;
5910 if (form == DW_FORM_sdata)
5911 if (unlikely (dwarf_formsdata (attrp, &snum) != 0))
5914 if (valuestr == NULL)
5916 printf (" %*s%-20s (%s)",
5917 (int) (level * 2), "", dwarf_attr_name (attr),
5918 dwarf_form_name (form));
5919 if (form == DW_FORM_sdata)
5920 printf (" %" PRIdMAX "\n", (intmax_t) snum);
5922 printf (" %" PRIuMAX "\n", (uintmax_t) num);
5926 printf (" %*s%-20s (%s) %s",
5927 (int) (level * 2), "", dwarf_attr_name (attr),
5928 dwarf_form_name (form), valuestr);
5929 if (form == DW_FORM_sdata)
5930 printf (" (%" PRIdMAX ")\n", (intmax_t) snum);
5932 printf (" (%" PRIuMAX ")\n", (uintmax_t) num);
5941 if (unlikely (dwarf_formflag (attrp, &flag) != 0))
5944 printf (" %*s%-20s (%s) %s\n",
5945 (int) (level * 2), "", dwarf_attr_name (attr),
5946 dwarf_form_name (form), nl_langinfo (flag ? YESSTR : NOSTR));
5949 case DW_FORM_flag_present:
5952 printf (" %*s%-20s (%s) %s\n",
5953 (int) (level * 2), "", dwarf_attr_name (attr),
5954 dwarf_form_name (form), nl_langinfo (YESSTR));
5957 case DW_FORM_exprloc:
5958 case DW_FORM_block4:
5959 case DW_FORM_block2:
5960 case DW_FORM_block1:
5965 if (unlikely (dwarf_formblock (attrp, &block) != 0))
5968 printf (" %*s%-20s (%s) ",
5969 (int) (level * 2), "", dwarf_attr_name (attr),
5970 dwarf_form_name (form));
5975 if (form != DW_FORM_exprloc)
5977 print_block (block.length, block.data);
5982 case DW_AT_location:
5983 case DW_AT_data_location:
5984 case DW_AT_data_member_location:
5985 case DW_AT_vtable_elem_location:
5986 case DW_AT_string_length:
5987 case DW_AT_use_location:
5988 case DW_AT_frame_base:
5989 case DW_AT_return_addr:
5990 case DW_AT_static_link:
5991 case DW_AT_allocated:
5992 case DW_AT_associated:
5993 case DW_AT_bit_size:
5994 case DW_AT_bit_offset:
5995 case DW_AT_bit_stride:
5996 case DW_AT_byte_size:
5997 case DW_AT_byte_stride:
5999 case DW_AT_lower_bound:
6000 case DW_AT_upper_bound:
6001 case DW_AT_GNU_call_site_value:
6002 case DW_AT_GNU_call_site_data_value:
6003 case DW_AT_GNU_call_site_target:
6004 case DW_AT_GNU_call_site_target_clobbered:
6006 print_ops (cbargs->dwflmod, cbargs->dbg,
6007 12 + level * 2, 12 + level * 2,
6008 cbargs->version, cbargs->addrsize, cbargs->offset_size,
6009 attrp->cu, block.length, block.data);
6017 printf (" %*s%-20s (form: %#x) ???\n",
6018 (int) (level * 2), "", dwarf_attr_name (attr),
6027 print_debug_units (Dwfl_Module *dwflmod,
6028 Ebl *ebl, GElf_Ehdr *ehdr,
6029 Elf_Scn *scn, GElf_Shdr *shdr,
6030 Dwarf *dbg, bool debug_types)
6032 const bool silent = !(print_debug_sections & section_info);
6033 const char *secname = section_name (ebl, ehdr, shdr);
6037 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n [Offset]\n"),
6038 elf_ndxscn (scn), secname, (uint64_t) shdr->sh_offset);
6040 /* If the section is empty we don't have to do anything. */
6041 if (!silent && shdr->sh_size == 0)
6045 Dwarf_Die *dies = (Dwarf_Die *) xmalloc (maxdies * sizeof (Dwarf_Die));
6047 Dwarf_Off offset = 0;
6049 /* New compilation unit. */
6052 Dwarf_Off abbroffset;
6059 if (dwarf_next_unit (dbg, offset, &nextcu, &cuhl, &version,
6060 &abbroffset, &addrsize, &offsize,
6061 debug_types ? &typesig : NULL,
6062 debug_types ? &typeoff : NULL) != 0)
6068 printf (gettext (" Type unit at offset %" PRIu64 ":\n"
6069 " Version: %" PRIu16 ", Abbreviation section offset: %"
6070 PRIu64 ", Address size: %" PRIu8
6071 ", Offset size: %" PRIu8
6072 "\n Type signature: %#" PRIx64
6073 ", Type offset: %#" PRIx64 "\n"),
6074 (uint64_t) offset, version, abbroffset, addrsize, offsize,
6075 typesig, (uint64_t) typeoff);
6077 printf (gettext (" Compilation unit at offset %" PRIu64 ":\n"
6078 " Version: %" PRIu16 ", Abbreviation section offset: %"
6079 PRIu64 ", Address size: %" PRIu8
6080 ", Offset size: %" PRIu8 "\n"),
6081 (uint64_t) offset, version, abbroffset, addrsize, offsize);
6084 struct attrcb_args args =
6090 .addrsize = addrsize,
6091 .offset_size = offsize
6098 if (unlikely ((debug_types ? dwarf_offdie_types : dwarf_offdie)
6099 (dbg, offset, &dies[level]) == NULL))
6102 error (0, 0, gettext ("cannot get DIE at offset %" PRIu64
6103 " in section '%s': %s"),
6104 (uint64_t) offset, secname, dwarf_errmsg (-1));
6108 args.cu = dies[0].cu;
6112 offset = dwarf_dieoffset (&dies[level]);
6113 if (unlikely (offset == ~0ul))
6116 error (0, 0, gettext ("cannot get DIE offset: %s"),
6121 int tag = dwarf_tag (&dies[level]);
6122 if (unlikely (tag == DW_TAG_invalid))
6125 error (0, 0, gettext ("cannot get tag of DIE at offset %" PRIu64
6126 " in section '%s': %s"),
6127 (uint64_t) offset, secname, dwarf_errmsg (-1));
6132 printf (" [%6" PRIx64 "] %*s%s\n",
6133 (uint64_t) offset, (int) (level * 2), "",
6134 dwarf_tag_name (tag));
6136 /* Print the attribute values. */
6138 args.die = &dies[level];
6139 (void) dwarf_getattrs (&dies[level], attr_callback, &args, 0);
6141 /* Make room for the next level's DIE. */
6142 if (level + 1 == maxdies)
6143 dies = (Dwarf_Die *) xrealloc (dies,
6145 * sizeof (Dwarf_Die));
6147 int res = dwarf_child (&dies[level], &dies[level + 1]);
6150 while ((res = dwarf_siblingof (&dies[level], &dies[level])) == 1)
6154 if (unlikely (res == -1))
6157 error (0, 0, gettext ("cannot get next DIE: %s\n"),
6162 else if (unlikely (res < 0))
6165 error (0, 0, gettext ("cannot get next DIE: %s"),
6183 print_debug_info_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
6184 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6186 print_debug_units (dwflmod, ebl, ehdr, scn, shdr, dbg, false);
6190 print_debug_types_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
6191 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6193 print_debug_units (dwflmod, ebl, ehdr, scn, shdr, dbg, true);
6198 print_decoded_line_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
6199 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6202 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n\n"),
6203 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
6204 (uint64_t) shdr->sh_offset);
6207 = elf_getident (ebl->elf, NULL)[EI_CLASS] == ELFCLASS32 ? 4 : 8;
6210 Dwarf_Off ncuoffset = 0;
6212 while (dwarf_nextcu (dbg, cuoffset = ncuoffset, &ncuoffset, &hsize,
6213 NULL, NULL, NULL) == 0)
6216 if (dwarf_offdie (dbg, cuoffset + hsize, &cudie) == NULL)
6221 if (dwarf_getsrclines (&cudie, &lines, &nlines) != 0)
6224 printf (" CU [%" PRIx64 "] %s\n",
6225 dwarf_dieoffset (&cudie), dwarf_diename (&cudie));
6226 printf (" line:col SBPE* disc isa op address"
6227 " (Statement Block Prologue Epilogue *End)\n");
6228 const char *last_file = "";
6229 for (size_t n = 0; n < nlines; n++)
6231 Dwarf_Line *line = dwarf_onesrcline (lines, n);
6232 Dwarf_Word mtime, length;
6233 const char *file = dwarf_linesrc (line, &mtime, &length);
6234 if (strcmp (last_file, file) != 0)
6236 printf (" %s (mtime: %" PRIu64 ", length: %" PRIu64 ")\n",
6237 file, mtime, length);
6242 bool statement, endseq, block, prologue_end, epilogue_begin;
6243 unsigned int lineop, isa, disc;
6245 dwarf_lineaddr (line, &address);
6246 dwarf_lineno (line, &lineno);
6247 dwarf_linecol (line, &colno);
6248 dwarf_lineop_index (line, &lineop);
6249 dwarf_linebeginstatement (line, &statement);
6250 dwarf_lineendsequence (line, &endseq);
6251 dwarf_lineblock (line, &block);
6252 dwarf_lineprologueend (line, &prologue_end);
6253 dwarf_lineepiloguebegin (line, &epilogue_begin);
6254 dwarf_lineisa (line, &isa);
6255 dwarf_linediscriminator (line, &disc);
6257 /* End sequence is special, it is one byte past. */
6258 char *a = format_dwarf_addr (dwflmod, address_size,
6259 address - (endseq ? 1 : 0), address);
6260 printf (" %4d:%-3d %c%c%c%c%c %4d %3d %2d %s\n",
6262 (statement ? 'S' : ' '),
6263 (block ? 'B' : ' '),
6264 (prologue_end ? 'P' : ' '),
6265 (epilogue_begin ? 'E' : ' '),
6266 (endseq ? '*' : ' '),
6267 disc, isa, lineop, a);
6278 print_debug_line_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
6279 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6283 print_decoded_line_section (dwflmod, ebl, ehdr, scn, shdr, dbg);
6288 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
6289 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
6290 (uint64_t) shdr->sh_offset);
6292 if (shdr->sh_size == 0)
6295 /* There is no functionality in libdw to read the information in the
6296 way it is represented here. Hardcode the decoder. */
6297 Elf_Data *data = dbg->sectiondata[IDX_debug_line];
6298 if (unlikely (data == NULL || data->d_buf == NULL))
6300 error (0, 0, gettext ("cannot get line data section data: %s"),
6305 const unsigned char *linep = (const unsigned char *) data->d_buf;
6306 const unsigned char *lineendp;
6309 < (lineendp = (const unsigned char *) data->d_buf + data->d_size))
6311 size_t start_offset = linep - (const unsigned char *) data->d_buf;
6313 printf (gettext ("\nTable at offset %Zu:\n"), start_offset);
6315 Dwarf_Word unit_length = read_4ubyte_unaligned_inc (dbg, linep);
6316 unsigned int length = 4;
6317 if (unlikely (unit_length == 0xffffffff))
6319 if (unlikely (linep + 8 > lineendp))
6322 error (0, 0, gettext ("invalid data in section [%zu] '%s'"),
6323 elf_ndxscn (scn), section_name (ebl, ehdr, shdr));
6326 unit_length = read_8ubyte_unaligned_inc (dbg, linep);
6330 /* Check whether we have enough room in the section. */
6331 if (unit_length < 2 + length + 5 * 1
6332 || unlikely (linep + unit_length > lineendp))
6334 lineendp = linep + unit_length;
6336 /* The next element of the header is the version identifier. */
6337 uint_fast16_t version = read_2ubyte_unaligned_inc (dbg, linep);
6339 /* Next comes the header length. */
6340 Dwarf_Word header_length;
6342 header_length = read_4ubyte_unaligned_inc (dbg, linep);
6344 header_length = read_8ubyte_unaligned_inc (dbg, linep);
6345 //const unsigned char *header_start = linep;
6347 /* Next the minimum instruction length. */
6348 uint_fast8_t minimum_instr_len = *linep++;
6350 /* Next the maximum operations per instruction, in version 4 format. */
6351 uint_fast8_t max_ops_per_instr = version < 4 ? 1 : *linep++;
6353 /* Then the flag determining the default value of the is_stmt
6355 uint_fast8_t default_is_stmt = *linep++;
6357 /* Now the line base. */
6358 int_fast8_t line_base = *((const int_fast8_t *) linep);
6361 /* And the line range. */
6362 uint_fast8_t line_range = *linep++;
6364 /* The opcode base. */
6365 uint_fast8_t opcode_base = *linep++;
6367 /* Print what we got so far. */
6368 printf (gettext ("\n"
6369 " Length: %" PRIu64 "\n"
6370 " DWARF version: %" PRIuFAST16 "\n"
6371 " Prologue length: %" PRIu64 "\n"
6372 " Minimum instruction length: %" PRIuFAST8 "\n"
6373 " Maximum operations per instruction: %" PRIuFAST8 "\n"
6374 " Initial value if '%s': %" PRIuFAST8 "\n"
6375 " Line base: %" PRIdFAST8 "\n"
6376 " Line range: %" PRIuFAST8 "\n"
6377 " Opcode base: %" PRIuFAST8 "\n"
6380 (uint64_t) unit_length, version, (uint64_t) header_length,
6381 minimum_instr_len, max_ops_per_instr,
6382 "is_stmt", default_is_stmt, line_base,
6383 line_range, opcode_base);
6385 if (unlikely (linep + opcode_base - 1 >= lineendp))
6389 gettext ("invalid data at offset %tu in section [%zu] '%s'"),
6390 linep - (const unsigned char *) data->d_buf,
6391 elf_ndxscn (scn), section_name (ebl, ehdr, shdr));
6395 int opcode_base_l10 = 1;
6396 unsigned int tmp = opcode_base;
6402 const uint8_t *standard_opcode_lengths = linep - 1;
6403 for (uint_fast8_t cnt = 1; cnt < opcode_base; ++cnt)
6404 printf (ngettext (" [%*" PRIuFAST8 "] %hhu argument\n",
6405 " [%*" PRIuFAST8 "] %hhu arguments\n",
6406 (int) linep[cnt - 1]),
6407 opcode_base_l10, cnt, linep[cnt - 1]);
6408 linep += opcode_base - 1;
6409 if (unlikely (linep >= lineendp))
6412 puts (gettext ("\nDirectory table:"));
6415 unsigned char *endp = memchr (linep, '\0', lineendp - linep);
6416 if (unlikely (endp == NULL))
6419 printf (" %s\n", (char *) linep);
6423 /* Skip the final NUL byte. */
6426 if (unlikely (linep >= lineendp))
6428 puts (gettext ("\nFile name table:\n"
6429 " Entry Dir Time Size Name"));
6430 for (unsigned int cnt = 1; *linep != 0; ++cnt)
6432 /* First comes the file name. */
6433 char *fname = (char *) linep;
6434 unsigned char *endp = memchr (fname, '\0', lineendp - linep);
6435 if (unlikely (endp == NULL))
6439 /* Then the index. */
6440 unsigned int diridx;
6441 get_uleb128 (diridx, linep);
6443 /* Next comes the modification time. */
6445 get_uleb128 (mtime, linep);
6447 /* Finally the length of the file. */
6449 get_uleb128 (fsize, linep);
6451 printf (" %-5u %-5u %-9u %-9u %s\n",
6452 cnt, diridx, mtime, fsize, fname);
6454 /* Skip the final NUL byte. */
6457 puts (gettext ("\nLine number statements:"));
6458 Dwarf_Word address = 0;
6459 unsigned int op_index = 0;
6461 uint_fast8_t is_stmt = default_is_stmt;
6463 /* Default address value, in case we do not find the CU. */
6465 = elf_getident (ebl->elf, NULL)[EI_CLASS] == ELFCLASS32 ? 4 : 8;
6467 /* Determine the CU this block is for. */
6469 Dwarf_Off ncuoffset = 0;
6471 while (dwarf_nextcu (dbg, cuoffset = ncuoffset, &ncuoffset, &hsize,
6472 NULL, NULL, NULL) == 0)
6475 if (dwarf_offdie (dbg, cuoffset + hsize, &cudie) == NULL)
6477 Dwarf_Attribute stmt_list;
6478 if (dwarf_attr (&cudie, DW_AT_stmt_list, &stmt_list) == NULL)
6481 if (dwarf_formudata (&stmt_list, &lineoff) != 0)
6483 if (lineoff == start_offset)
6486 address_size = cudie.cu->address_size;
6491 /* Apply the "operation advance" from a special opcode
6492 or DW_LNS_advance_pc (as per DWARF4 6.2.5.1). */
6493 unsigned int op_addr_advance;
6495 inline void advance_pc (unsigned int op_advance)
6497 op_addr_advance = minimum_instr_len * ((op_index + op_advance)
6498 / max_ops_per_instr);
6499 address += op_advance;
6500 show_op_index = (op_index > 0 ||
6501 (op_index + op_advance) % max_ops_per_instr > 0);
6502 op_index = (op_index + op_advance) % max_ops_per_instr;
6505 while (linep < lineendp)
6507 size_t offset = linep - (const unsigned char *) data->d_buf;
6511 /* Read the opcode. */
6512 unsigned int opcode = *linep++;
6514 printf (" [%6" PRIx64 "]", (uint64_t)offset);
6515 /* Is this a special opcode? */
6516 if (likely (opcode >= opcode_base))
6518 if (unlikely (line_range == 0))
6521 /* Yes. Handling this is quite easy since the opcode value
6524 opcode = (desired line increment - line_base)
6525 + (line_range * address advance) + opcode_base
6527 int line_increment = (line_base
6528 + (opcode - opcode_base) % line_range);
6530 /* Perform the increments. */
6531 line += line_increment;
6532 advance_pc ((opcode - opcode_base) / line_range);
6534 char *a = format_dwarf_addr (dwflmod, 0, address, address);
6537 special opcode %u: address+%u = %s, op_index = %u, line%+d = %zu\n"),
6538 opcode, op_addr_advance, a, op_index,
6539 line_increment, line);
6542 special opcode %u: address+%u = %s, line%+d = %zu\n"),
6543 opcode, op_addr_advance, a, line_increment, line);
6546 else if (opcode == 0)
6548 /* This an extended opcode. */
6549 if (unlikely (linep + 2 > lineendp))
6553 unsigned int len = *linep++;
6555 if (unlikely (linep + len > lineendp))
6558 /* The sub-opcode. */
6561 printf (gettext (" extended opcode %u: "), opcode);
6565 case DW_LNE_end_sequence:
6566 puts (gettext (" end of sequence"));
6568 /* Reset the registers we care about. */
6572 is_stmt = default_is_stmt;
6575 case DW_LNE_set_address:
6577 if (address_size == 4)
6578 address = read_4ubyte_unaligned_inc (dbg, linep);
6580 address = read_8ubyte_unaligned_inc (dbg, linep);
6582 char *a = format_dwarf_addr (dwflmod, 0, address, address);
6583 printf (gettext (" set address to %s\n"), a);
6588 case DW_LNE_define_file:
6590 char *fname = (char *) linep;
6591 unsigned char *endp = memchr (linep, '\0',
6593 if (unlikely (endp == NULL))
6597 unsigned int diridx;
6598 get_uleb128 (diridx, linep);
6600 get_uleb128 (mtime, linep);
6601 Dwarf_Word filelength;
6602 get_uleb128 (filelength, linep);
6605 define new file: dir=%u, mtime=%" PRIu64 ", length=%" PRIu64 ", name=%s\n"),
6606 diridx, (uint64_t) mtime, (uint64_t) filelength,
6611 case DW_LNE_set_discriminator:
6612 /* Takes one ULEB128 parameter, the discriminator. */
6613 if (unlikely (standard_opcode_lengths[opcode] != 1))
6616 get_uleb128 (u128, linep);
6617 printf (gettext (" set discriminator to %u\n"), u128);
6621 /* Unknown, ignore it. */
6622 puts (gettext (" unknown opcode"));
6627 else if (opcode <= DW_LNS_set_isa)
6629 /* This is a known standard opcode. */
6633 /* Takes no argument. */
6634 puts (gettext (" copy"));
6637 case DW_LNS_advance_pc:
6638 /* Takes one uleb128 parameter which is added to the
6640 get_uleb128 (u128, linep);
6643 char *a = format_dwarf_addr (dwflmod, 0, address, address);
6646 advance address by %u to %s, op_index to %u\n"),
6647 op_addr_advance, a, op_index);
6649 printf (gettext (" advance address by %u to %s\n"),
6650 op_addr_advance, a);
6655 case DW_LNS_advance_line:
6656 /* Takes one sleb128 parameter which is added to the
6658 get_sleb128 (s128, linep);
6661 advance line by constant %d to %" PRId64 "\n"),
6662 s128, (int64_t) line);
6665 case DW_LNS_set_file:
6666 /* Takes one uleb128 parameter which is stored in file. */
6667 get_uleb128 (u128, linep);
6668 printf (gettext (" set file to %" PRIu64 "\n"),
6672 case DW_LNS_set_column:
6673 /* Takes one uleb128 parameter which is stored in column. */
6674 if (unlikely (standard_opcode_lengths[opcode] != 1))
6677 get_uleb128 (u128, linep);
6678 printf (gettext (" set column to %" PRIu64 "\n"),
6682 case DW_LNS_negate_stmt:
6683 /* Takes no argument. */
6684 is_stmt = 1 - is_stmt;
6685 printf (gettext (" set '%s' to %" PRIuFAST8 "\n"),
6686 "is_stmt", is_stmt);
6689 case DW_LNS_set_basic_block:
6690 /* Takes no argument. */
6691 puts (gettext (" set basic block flag"));
6694 case DW_LNS_const_add_pc:
6695 /* Takes no argument. */
6697 if (unlikely (line_range == 0))
6700 advance_pc ((255 - opcode_base) / line_range);
6702 char *a = format_dwarf_addr (dwflmod, 0, address, address);
6705 advance address by constant %u to %s, op_index to %u\n"),
6706 op_addr_advance, a, op_index);
6709 advance address by constant %u to %s\n"),
6710 op_addr_advance, a);
6715 case DW_LNS_fixed_advance_pc:
6716 /* Takes one 16 bit parameter which is added to the
6718 if (unlikely (standard_opcode_lengths[opcode] != 1))
6721 u128 = read_2ubyte_unaligned_inc (dbg, linep);
6725 char *a = format_dwarf_addr (dwflmod, 0, address, address);
6727 advance address by fixed value %u to %s\n"),
6733 case DW_LNS_set_prologue_end:
6734 /* Takes no argument. */
6735 puts (gettext (" set prologue end flag"));
6738 case DW_LNS_set_epilogue_begin:
6739 /* Takes no argument. */
6740 puts (gettext (" set epilogue begin flag"));
6743 case DW_LNS_set_isa:
6744 /* Takes one uleb128 parameter which is stored in isa. */
6745 if (unlikely (standard_opcode_lengths[opcode] != 1))
6748 get_uleb128 (u128, linep);
6749 printf (gettext (" set isa to %u\n"), u128);
6755 /* This is a new opcode the generator but not we know about.
6756 Read the parameters associated with it but then discard
6757 everything. Read all the parameters for this opcode. */
6758 printf (ngettext (" unknown opcode with %" PRIu8 " parameter:",
6759 " unknown opcode with %" PRIu8 " parameters:",
6760 standard_opcode_lengths[opcode]),
6761 standard_opcode_lengths[opcode]);
6762 for (int n = standard_opcode_lengths[opcode]; n > 0; --n)
6764 get_uleb128 (u128, linep);
6765 if (n != standard_opcode_lengths[opcode])
6766 putc_unlocked (',', stdout);
6767 printf (" %u", u128);
6770 /* Next round, ignore this opcode. */
6776 /* There must only be one data block. */
6777 assert (elf_getdata (scn, data) == NULL);
6782 print_debug_loc_section (Dwfl_Module *dwflmod,
6783 Ebl *ebl, GElf_Ehdr *ehdr,
6784 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6786 Elf_Data *data = dbg->sectiondata[IDX_debug_loc];
6788 if (unlikely (data == NULL))
6790 error (0, 0, gettext ("cannot get .debug_loc content: %s"),
6796 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
6797 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
6798 (uint64_t) shdr->sh_offset);
6800 sort_listptr (&known_loclistptr, "loclistptr");
6801 size_t listptr_idx = 0;
6803 uint_fast8_t address_size = ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8;
6804 uint_fast8_t offset_size = 4;
6807 struct Dwarf_CU *cu = NULL;
6808 Dwarf_Addr base = 0;
6809 unsigned char *readp = data->d_buf;
6810 unsigned char *const endp = (unsigned char *) data->d_buf + data->d_size;
6811 while (readp < endp)
6813 ptrdiff_t offset = readp - (unsigned char *) data->d_buf;
6815 if (first && skip_listptr_hole (&known_loclistptr, &listptr_idx,
6816 &address_size, &offset_size, &base,
6817 &cu, offset, &readp, endp))
6820 if (unlikely (data->d_size - offset < (size_t) address_size * 2))
6822 printf (gettext (" [%6tx] <INVALID DATA>\n"), offset);
6828 if (address_size == 8)
6830 begin = read_8ubyte_unaligned_inc (dbg, readp);
6831 end = read_8ubyte_unaligned_inc (dbg, readp);
6835 begin = read_4ubyte_unaligned_inc (dbg, readp);
6836 end = read_4ubyte_unaligned_inc (dbg, readp);
6837 if (begin == (Dwarf_Addr) (uint32_t) -1)
6838 begin = (Dwarf_Addr) -1l;
6841 if (begin == (Dwarf_Addr) -1l) /* Base address entry. */
6843 char *b = format_dwarf_addr (dwflmod, address_size, end, end);
6844 printf (gettext (" [%6tx] base address %s\n"), offset, b);
6848 else if (begin == 0 && end == 0) /* End of list entry. */
6851 printf (gettext (" [%6tx] empty list\n"), offset);
6856 /* We have a location expression entry. */
6857 uint_fast16_t len = read_2ubyte_unaligned_inc (dbg, readp);
6859 char *b = format_dwarf_addr (dwflmod, address_size, base + begin,
6861 char *e = format_dwarf_addr (dwflmod, address_size, base + end,
6864 if (first) /* First entry in a list. */
6865 printf (gettext (" [%6tx] %s..%s"), offset, b, e);
6867 printf (gettext (" %s..%s"), b, e);
6872 if (endp - readp <= (ptrdiff_t) len)
6874 fputs (gettext (" <INVALID DATA>\n"), stdout);
6878 print_ops (dwflmod, dbg, 1, 18 + (address_size * 4),
6879 3 /*XXX*/, address_size, offset_size, cu, len, readp);
6892 struct mac_culist *next;
6897 mac_compare (const void *p1, const void *p2)
6899 struct mac_culist *m1 = (struct mac_culist *) p1;
6900 struct mac_culist *m2 = (struct mac_culist *) p2;
6902 if (m1->offset < m2->offset)
6904 if (m1->offset > m2->offset)
6911 print_debug_macinfo_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
6912 Ebl *ebl, GElf_Ehdr *ehdr,
6913 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6916 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
6917 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
6918 (uint64_t) shdr->sh_offset);
6919 putc_unlocked ('\n', stdout);
6921 /* There is no function in libdw to iterate over the raw content of
6922 the section but it is easy enough to do. */
6923 Elf_Data *data = dbg->sectiondata[IDX_debug_macinfo];
6924 if (unlikely (data == NULL || data->d_buf == NULL))
6926 error (0, 0, gettext ("cannot get macro information section data: %s"),
6931 /* Get the source file information for all CUs. */
6935 struct mac_culist *culist = NULL;
6937 while (dwarf_nextcu (dbg, offset = ncu, &ncu, &hsize, NULL, NULL, NULL) == 0)
6940 if (dwarf_offdie (dbg, offset + hsize, &cudie) == NULL)
6943 Dwarf_Attribute attr;
6944 if (dwarf_attr (&cudie, DW_AT_macro_info, &attr) == NULL)
6948 if (dwarf_formudata (&attr, &macoff) != 0)
6951 struct mac_culist *newp = (struct mac_culist *) alloca (sizeof (*newp));
6953 newp->offset = macoff;
6955 newp->next = culist;
6960 /* Convert the list into an array for easier consumption. */
6961 struct mac_culist *cus = (struct mac_culist *) alloca ((nculist + 1)
6964 cus[nculist].offset = data->d_size;
6967 for (size_t cnt = nculist - 1; culist != NULL; --cnt)
6969 assert (cnt < nculist);
6971 culist = culist->next;
6974 /* Sort the array according to the offset in the .debug_macinfo
6975 section. Note we keep the sentinel at the end. */
6976 qsort (cus, nculist, sizeof (*cus), mac_compare);
6979 const unsigned char *readp = (const unsigned char *) data->d_buf;
6980 const unsigned char *readendp = readp + data->d_size;
6983 while (readp < readendp)
6985 unsigned int opcode = *readp++;
6987 unsigned int u128_2;
6988 const unsigned char *endp;
6992 case DW_MACINFO_define:
6993 case DW_MACINFO_undef:
6994 case DW_MACINFO_vendor_ext:
6995 /* For the first two opcodes the parameters are
6999 We can treat these cases together. */
7000 get_uleb128 (u128, readp);
7002 endp = memchr (readp, '\0', readendp - readp);
7003 if (unlikely (endp == NULL))
7006 %*s*** non-terminated string at end of section"),
7011 if (opcode == DW_MACINFO_define)
7012 printf ("%*s#define %s, line %u\n",
7013 level, "", (char *) readp, u128);
7014 else if (opcode == DW_MACINFO_undef)
7015 printf ("%*s#undef %s, line %u\n",
7016 level, "", (char *) readp, u128);
7018 printf (" #vendor-ext %s, number %u\n", (char *) readp, u128);
7023 case DW_MACINFO_start_file:
7024 /* The two parameters are line and file index, in this order. */
7025 get_uleb128 (u128, readp);
7026 get_uleb128 (u128_2, readp);
7028 /* Find the CU DIE for this file. */
7029 size_t macoff = readp - (const unsigned char *) data->d_buf;
7030 const char *fname = "???";
7031 if (macoff >= cus[0].offset)
7033 while (macoff >= cus[1].offset)
7036 if (cus[0].files == NULL
7037 && dwarf_getsrcfiles (&cus[0].die, &cus[0].files, NULL) != 0)
7038 cus[0].files = (Dwarf_Files *) -1l;
7040 if (cus[0].files != (Dwarf_Files *) -1l)
7041 fname = (dwarf_filesrc (cus[0].files, u128_2, NULL, NULL)
7045 printf ("%*sstart_file %u, [%u] %s\n",
7046 level, "", u128, u128_2, fname);
7050 case DW_MACINFO_end_file:
7052 printf ("%*send_file\n", level, "");
7053 /* Nothing more to do. */
7057 // XXX gcc seems to generate files with a trailing zero.
7058 if (unlikely (opcode != 0 || readp != readendp))
7059 printf ("%*s*** invalid opcode %u\n", level, "", opcode);
7067 print_debug_macro_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
7068 Ebl *ebl, GElf_Ehdr *ehdr,
7069 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
7072 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
7073 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
7074 (uint64_t) shdr->sh_offset);
7075 putc_unlocked ('\n', stdout);
7077 Elf_Data *data = dbg->sectiondata[IDX_debug_macro];
7078 if (unlikely (data == NULL || data->d_buf == NULL))
7080 error (0, 0, gettext ("cannot get macro information section data: %s"),
7085 /* Get the source file information for all CUs. Uses same
7086 datastructure as macinfo. But uses offset field to directly
7087 match .debug_line offset. And just stored in a list. */
7091 struct mac_culist *culist = NULL;
7093 while (dwarf_nextcu (dbg, offset = ncu, &ncu, &hsize, NULL, NULL, NULL) == 0)
7096 if (dwarf_offdie (dbg, offset + hsize, &cudie) == NULL)
7099 Dwarf_Attribute attr;
7100 if (dwarf_attr (&cudie, DW_AT_stmt_list, &attr) == NULL)
7104 if (dwarf_formudata (&attr, &lineoff) != 0)
7107 struct mac_culist *newp = (struct mac_culist *) alloca (sizeof (*newp));
7109 newp->offset = lineoff;
7111 newp->next = culist;
7116 const unsigned char *readp = (const unsigned char *) data->d_buf;
7117 const unsigned char *readendp = readp + data->d_size;
7119 while (readp < readendp)
7121 printf (gettext (" Offset: 0x%" PRIx64 "\n"),
7122 (uint64_t) (readp - (const unsigned char *) data->d_buf));
7124 // Header, 2 byte version, 1 byte flag, optional .debug_line offset,
7125 // optional vendor extension macro entry table.
7126 if (readp + 2 > readendp)
7129 error (0, 0, gettext ("invalid data"));
7132 const uint16_t vers = read_2ubyte_unaligned_inc (dbg, readp);
7133 printf (gettext (" Version: %" PRIu16 "\n"), vers);
7135 // Version 4 is the GNU extension for DWARF4. DWARF5 will use version
7136 // 5 when it gets standardized.
7139 printf (gettext (" unknown version, cannot parse section\n"));
7143 if (readp + 1 > readendp)
7145 const unsigned char flag = *readp++;
7146 printf (gettext (" Flag: 0x%" PRIx8 "\n"), flag);
7148 unsigned int offset_len = (flag & 0x01) ? 8 : 4;
7149 printf (gettext (" Offset length: %" PRIu8 "\n"), offset_len);
7150 Dwarf_Off line_offset = -1;
7153 if (offset_len == 8)
7154 line_offset = read_8ubyte_unaligned_inc (dbg, readp);
7156 line_offset = read_4ubyte_unaligned_inc (dbg, readp);
7157 printf (gettext (" .debug_line offset: 0x%" PRIx64 "\n"),
7161 const unsigned char *vendor[DW_MACRO_GNU_hi_user - DW_MACRO_GNU_lo_user];
7162 memset (vendor, 0, sizeof vendor);
7165 // 1 byte length, for each item, 1 byte opcode, uleb128 number
7166 // of arguments, for each argument 1 byte form code.
7167 if (readp + 1 > readendp)
7169 unsigned int tlen = *readp++;
7170 printf (gettext (" extension opcode table, %" PRIu8 " items:\n"),
7172 for (unsigned int i = 0; i < tlen; i++)
7174 if (readp + 1 > readendp)
7176 unsigned int opcode = *readp++;
7177 printf (gettext (" [%" PRIx8 "]"), opcode);
7178 if (opcode < DW_MACRO_GNU_lo_user
7179 || opcode > DW_MACRO_GNU_hi_user)
7181 // Record the start of description for this vendor opcode.
7182 // uleb128 nr args, 1 byte per arg form.
7183 vendor[opcode - DW_MACRO_GNU_lo_user] = readp;
7184 if (readp + 1 > readendp)
7186 unsigned int args = *readp++;
7189 printf (gettext (" %" PRIu8 " arguments:"), args);
7192 if (readp + 1 > readendp)
7194 unsigned int form = *readp++;
7195 printf (" %s", dwarf_form_string (form));
7196 if (form != DW_FORM_data1
7197 && form != DW_FORM_data2
7198 && form != DW_FORM_data4
7199 && form != DW_FORM_data8
7200 && form != DW_FORM_sdata
7201 && form != DW_FORM_udata
7202 && form != DW_FORM_block
7203 && form != DW_FORM_block1
7204 && form != DW_FORM_block2
7205 && form != DW_FORM_block4
7206 && form != DW_FORM_flag
7207 && form != DW_FORM_string
7208 && form != DW_FORM_strp
7209 && form != DW_FORM_sec_offset)
7213 putchar_unlocked (',');
7217 printf (gettext (" no arguments."));
7218 putchar_unlocked ('\n');
7221 putchar_unlocked ('\n');
7224 if (readp + 1 > readendp)
7226 unsigned int opcode = *readp++;
7230 unsigned int u128_2;
7231 const unsigned char *endp;
7236 case DW_MACRO_GNU_start_file:
7237 get_uleb128 (u128, readp);
7238 get_uleb128 (u128_2, readp);
7240 /* Find the CU DIE that matches this line offset. */
7241 const char *fname = "???";
7242 if (line_offset != (Dwarf_Off) -1)
7244 struct mac_culist *cu = culist;
7245 while (cu != NULL && line_offset != cu->offset)
7249 if (cu->files == NULL
7250 && dwarf_getsrcfiles (&cu->die, &cu->files,
7252 cu->files = (Dwarf_Files *) -1l;
7254 if (cu->files != (Dwarf_Files *) -1l)
7255 fname = (dwarf_filesrc (cu->files, u128_2,
7256 NULL, NULL) ?: "???");
7259 printf ("%*sstart_file %u, [%u] %s\n",
7260 level, "", u128, u128_2, fname);
7264 case DW_MACRO_GNU_end_file:
7266 printf ("%*send_file\n", level, "");
7269 case DW_MACRO_GNU_define:
7270 get_uleb128 (u128, readp);
7271 endp = memchr (readp, '\0', readendp - readp);
7274 printf ("%*s#define %s, line %u\n",
7275 level, "", readp, u128);
7279 case DW_MACRO_GNU_undef:
7280 get_uleb128 (u128, readp);
7281 endp = memchr (readp, '\0', readendp - readp);
7284 printf ("%*s#undef %s, line %u\n",
7285 level, "", readp, u128);
7289 case DW_MACRO_GNU_define_indirect:
7290 get_uleb128 (u128, readp);
7291 if (readp + offset_len > readendp)
7293 if (offset_len == 8)
7294 off = read_8ubyte_unaligned_inc (dbg, readp);
7296 off = read_4ubyte_unaligned_inc (dbg, readp);
7297 printf ("%*s#define %s, line %u (indirect)\n",
7298 level, "", dwarf_getstring (dbg, off, NULL), u128);
7301 case DW_MACRO_GNU_undef_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#undef %s, line %u (indirect)\n",
7310 level, "", dwarf_getstring (dbg, off, NULL), u128);
7313 case DW_MACRO_GNU_transparent_include:
7314 if (readp + offset_len > readendp)
7316 if (offset_len == 8)
7317 off = read_8ubyte_unaligned_inc (dbg, readp);
7319 off = read_4ubyte_unaligned_inc (dbg, readp);
7320 printf ("%*s#include offset 0x%" PRIx64 "\n",
7325 printf ("%*svendor opcode 0x%" PRIx8, level, "", opcode);
7326 if (opcode < DW_MACRO_GNU_lo_user
7327 || opcode > DW_MACRO_GNU_lo_user
7328 || vendor[opcode - DW_MACRO_GNU_lo_user] == NULL)
7331 const unsigned char *op_desc;
7332 op_desc = vendor[opcode - DW_MACRO_GNU_lo_user];
7334 // Just skip the arguments, we cannot really interpret them,
7335 // but print as much as we can.
7336 unsigned int args = *op_desc++;
7339 unsigned int form = *op_desc++;
7344 if (readp + 1 > readendp)
7347 printf (" %" PRIx8, (unsigned int) val);
7351 if (readp + 2 > readendp)
7353 val = read_2ubyte_unaligned_inc (dbg, readp);
7354 printf(" %" PRIx16, (unsigned int) val);
7358 if (readp + 4 > readendp)
7360 val = read_4ubyte_unaligned_inc (dbg, readp);
7361 printf (" %" PRIx32, (unsigned int) val);
7365 if (readp + 8 > readendp)
7367 val = read_8ubyte_unaligned_inc (dbg, readp);
7368 printf (" %" PRIx64, val);
7372 get_sleb128 (val, readp);
7373 printf (" %" PRIx64, val);
7377 get_uleb128 (val, readp);
7378 printf (" %" PRIx64, val);
7382 get_uleb128 (val, readp);
7383 printf (" block[%" PRIu64 "]", val);
7384 if (readp + val > readendp)
7389 case DW_FORM_block1:
7390 if (readp + 1 > readendp)
7393 printf (" block[%" PRIu64 "]", val);
7394 if (readp + val > readendp)
7398 case DW_FORM_block2:
7399 if (readp + 2 > readendp)
7401 val = read_2ubyte_unaligned_inc (dbg, readp);
7402 printf (" block[%" PRIu64 "]", val);
7403 if (readp + val > readendp)
7407 case DW_FORM_block4:
7408 if (readp + 2 > readendp)
7410 val =read_4ubyte_unaligned_inc (dbg, readp);
7411 printf (" block[%" PRIu64 "]", val);
7412 if (readp + val > readendp)
7417 if (readp + 1 > readendp)
7420 printf (" %s", nl_langinfo (val != 0 ? YESSTR : NOSTR));
7423 case DW_FORM_string:
7424 endp = memchr (readp, '\0', readendp - readp);
7427 printf (" %s", readp);
7432 if (readp + offset_len > readendp)
7434 if (offset_len == 8)
7435 val = read_8ubyte_unaligned_inc (dbg, readp);
7437 val = read_4ubyte_unaligned_inc (dbg, readp);
7438 printf (" %s", dwarf_getstring (dbg, val, NULL));
7441 case DW_FORM_sec_offset:
7442 if (readp + offset_len > readendp)
7444 if (offset_len == 8)
7445 val = read_8ubyte_unaligned_inc (dbg, readp);
7447 val = read_4ubyte_unaligned_inc (dbg, readp);
7448 printf (" %" PRIx64, val);
7452 error (0, 0, gettext ("vendor opcode not verified?"));
7458 putchar_unlocked (',');
7460 putchar_unlocked ('\n');
7463 if (readp + 1 > readendp)
7467 putchar_unlocked ('\n');
7473 /* Callback for printing global names. */
7475 print_pubnames (Dwarf *dbg __attribute__ ((unused)), Dwarf_Global *global,
7478 int *np = (int *) arg;
7480 printf (gettext (" [%5d] DIE offset: %6" PRId64
7481 ", CU DIE offset: %6" PRId64 ", name: %s\n"),
7482 (*np)++, global->die_offset, global->cu_offset, global->name);
7488 /* Print the known exported symbols in the DWARF section '.debug_pubnames'. */
7490 print_debug_pubnames_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
7491 Ebl *ebl, GElf_Ehdr *ehdr,
7492 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
7494 printf (gettext ("\nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
7495 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
7496 (uint64_t) shdr->sh_offset);
7499 (void) dwarf_getpubnames (dbg, print_pubnames, &n, 0);
7502 /* Print the content of the DWARF string section '.debug_str'. */
7504 print_debug_str_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
7505 Ebl *ebl, GElf_Ehdr *ehdr,
7506 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
7508 const size_t sh_size = (dbg->sectiondata[IDX_debug_str] ?
7509 dbg->sectiondata[IDX_debug_str]->d_size : 0);
7511 /* Compute floor(log16(shdr->sh_size)). */
7512 GElf_Addr tmp = sh_size;
7519 digits = MAX (4, digits);
7521 printf (gettext ("\nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"
7524 section_name (ebl, ehdr, shdr), (uint64_t) shdr->sh_offset,
7525 /* TRANS: the debugstr| prefix makes the string unique. */
7526 digits + 2, sgettext ("debugstr|Offset"));
7528 Dwarf_Off offset = 0;
7529 while (offset < sh_size)
7532 const char *str = dwarf_getstring (dbg, offset, &len);
7533 if (unlikely (str == NULL))
7535 printf (gettext (" *** error while reading strings: %s\n"),
7540 printf (" [%*" PRIx64 "] \"%s\"\n", digits, (uint64_t) offset, str);
7547 /* Print the content of the call frame search table section
7550 print_debug_frame_hdr_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
7551 Ebl *ebl __attribute__ ((unused)),
7552 GElf_Ehdr *ehdr __attribute__ ((unused)),
7553 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
7556 \nCall frame search table section [%2zu] '.eh_frame_hdr':\n"),
7559 Elf_Data *data = elf_rawdata (scn, NULL);
7561 if (unlikely (data == NULL))
7563 error (0, 0, gettext ("cannot get %s content: %s"),
7564 ".eh_frame_hdr", elf_errmsg (-1));
7568 const unsigned char *readp = data->d_buf;
7569 const unsigned char *const dataend = ((unsigned char *) data->d_buf
7572 if (unlikely (readp + 4 > dataend))
7575 error (0, 0, gettext ("invalid data"));
7579 unsigned int version = *readp++;
7580 unsigned int eh_frame_ptr_enc = *readp++;
7581 unsigned int fde_count_enc = *readp++;
7582 unsigned int table_enc = *readp++;
7584 printf (" version: %u\n"
7585 " eh_frame_ptr_enc: %#x ",
7586 version, eh_frame_ptr_enc);
7587 print_encoding_base ("", eh_frame_ptr_enc);
7588 printf (" fde_count_enc: %#x ", fde_count_enc);
7589 print_encoding_base ("", fde_count_enc);
7590 printf (" table_enc: %#x ", table_enc);
7591 print_encoding_base ("", table_enc);
7593 uint64_t eh_frame_ptr = 0;
7594 if (eh_frame_ptr_enc != DW_EH_PE_omit)
7596 readp = read_encoded (eh_frame_ptr_enc, readp, dataend, &eh_frame_ptr,
7598 if (unlikely (readp == NULL))
7601 printf (" eh_frame_ptr: %#" PRIx64, eh_frame_ptr);
7602 if ((eh_frame_ptr_enc & 0x70) == DW_EH_PE_pcrel)
7603 printf (" (offset: %#" PRIx64 ")",
7604 /* +4 because of the 4 byte header of the section. */
7605 (uint64_t) shdr->sh_offset + 4 + eh_frame_ptr);
7607 putchar_unlocked ('\n');
7610 uint64_t fde_count = 0;
7611 if (fde_count_enc != DW_EH_PE_omit)
7613 readp = read_encoded (fde_count_enc, readp, dataend, &fde_count, dbg);
7614 if (unlikely (readp == NULL))
7617 printf (" fde_count: %" PRIu64 "\n", fde_count);
7620 if (fde_count == 0 || table_enc == DW_EH_PE_omit)
7625 /* Optimize for the most common case. */
7626 if (table_enc == (DW_EH_PE_datarel | DW_EH_PE_sdata4))
7627 while (fde_count > 0 && readp + 8 <= dataend)
7629 int32_t initial_location = read_4sbyte_unaligned_inc (dbg, readp);
7630 uint64_t initial_offset = ((uint64_t) shdr->sh_offset
7631 + (int64_t) initial_location);
7632 int32_t address = read_4sbyte_unaligned_inc (dbg, readp);
7633 // XXX Possibly print symbol name or section offset for initial_offset
7634 printf (" %#" PRIx32 " (offset: %#6" PRIx64 ") -> %#" PRIx32
7635 " fde=[%6" PRIx64 "]\n",
7636 initial_location, initial_offset,
7637 address, address - (eh_frame_ptr + 4));
7640 while (0 && readp < dataend)
7647 /* Print the content of the exception handling table section
7650 print_debug_exception_table (Dwfl_Module *dwflmod __attribute__ ((unused)),
7651 Ebl *ebl __attribute__ ((unused)),
7652 GElf_Ehdr *ehdr __attribute__ ((unused)),
7654 GElf_Shdr *shdr __attribute__ ((unused)),
7655 Dwarf *dbg __attribute__ ((unused)))
7658 \nException handling table section [%2zu] '.gcc_except_table':\n"),
7661 Elf_Data *data = elf_rawdata (scn, NULL);
7663 if (unlikely (data == NULL))
7665 error (0, 0, gettext ("cannot get %s content: %s"),
7666 ".gcc_except_table", elf_errmsg (-1));
7670 const unsigned char *readp = data->d_buf;
7671 const unsigned char *const dataend = readp + data->d_size;
7673 if (unlikely (readp + 1 > dataend))
7676 error (0, 0, gettext ("invalid data"));
7679 unsigned int lpstart_encoding = *readp++;
7680 printf (gettext (" LPStart encoding: %#x "), lpstart_encoding);
7681 print_encoding_base ("", lpstart_encoding);
7682 if (lpstart_encoding != DW_EH_PE_omit)
7685 readp = read_encoded (lpstart_encoding, readp, dataend, &lpstart, dbg);
7686 printf (" LPStart: %#" PRIx64 "\n", lpstart);
7689 if (unlikely (readp + 1 > dataend))
7691 unsigned int ttype_encoding = *readp++;
7692 printf (gettext (" TType encoding: %#x "), ttype_encoding);
7693 print_encoding_base ("", ttype_encoding);
7694 const unsigned char *ttype_base = NULL;
7695 if (ttype_encoding != DW_EH_PE_omit)
7697 unsigned int ttype_base_offset;
7698 get_uleb128 (ttype_base_offset, readp);
7699 printf (" TType base offset: %#x\n", ttype_base_offset);
7700 ttype_base = readp + ttype_base_offset;
7703 if (unlikely (readp + 1 > dataend))
7705 unsigned int call_site_encoding = *readp++;
7706 printf (gettext (" Call site encoding: %#x "), call_site_encoding);
7707 print_encoding_base ("", call_site_encoding);
7708 unsigned int call_site_table_len;
7709 get_uleb128 (call_site_table_len, readp);
7711 const unsigned char *const action_table = readp + call_site_table_len;
7712 if (unlikely (action_table > dataend))
7715 unsigned int max_action = 0;
7716 while (readp < action_table)
7719 puts (gettext ("\n Call site table:"));
7721 uint64_t call_site_start;
7722 readp = read_encoded (call_site_encoding, readp, dataend,
7723 &call_site_start, dbg);
7724 uint64_t call_site_length;
7725 readp = read_encoded (call_site_encoding, readp, dataend,
7726 &call_site_length, dbg);
7727 uint64_t landing_pad;
7728 readp = read_encoded (call_site_encoding, readp, dataend,
7730 unsigned int action;
7731 get_uleb128 (action, readp);
7732 max_action = MAX (action, max_action);
7733 printf (gettext (" [%4u] Call site start: %#" PRIx64 "\n"
7734 " Call site length: %" PRIu64 "\n"
7735 " Landing pad: %#" PRIx64 "\n"
7737 u++, call_site_start, call_site_length, landing_pad, action);
7739 assert (readp == action_table);
7741 unsigned int max_ar_filter = 0;
7744 puts ("\n Action table:");
7746 const unsigned char *const action_table_end
7747 = action_table + max_action + 1;
7753 get_sleb128 (ar_filter, readp);
7754 if (ar_filter > 0 && (unsigned int) ar_filter > max_ar_filter)
7755 max_ar_filter = ar_filter;
7757 get_sleb128 (ar_disp, readp);
7759 printf (" [%4u] ar_filter: % d\n"
7761 u, ar_filter, ar_disp);
7762 if (abs (ar_disp) & 1)
7763 printf (" -> [%4u]\n", u + (ar_disp + 1) / 2);
7764 else if (ar_disp != 0)
7767 putchar_unlocked ('\n');
7770 while (readp < action_table_end);
7773 if (max_ar_filter > 0)
7775 puts ("\n TType table:");
7777 // XXX Not *4, size of encoding;
7778 switch (ttype_encoding & 7)
7780 case DW_EH_PE_udata2:
7781 case DW_EH_PE_sdata2:
7782 readp = ttype_base - max_ar_filter * 2;
7784 case DW_EH_PE_udata4:
7785 case DW_EH_PE_sdata4:
7786 readp = ttype_base - max_ar_filter * 4;
7788 case DW_EH_PE_udata8:
7789 case DW_EH_PE_sdata8:
7790 readp = ttype_base - max_ar_filter * 8;
7793 error (1, 0, gettext ("invalid TType encoding"));
7799 readp = read_encoded (ttype_encoding, readp, ttype_base, &ttype,
7801 printf (" [%4u] %#" PRIx64 "\n", max_ar_filter--, ttype);
7803 while (readp < ttype_base);
7807 /* Print the content of the '.gdb_index' section.
7808 http://sourceware.org/gdb/current/onlinedocs/gdb/Index-Section-Format.html
7811 print_gdb_index_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
7812 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
7814 printf (gettext ("\nGDB section [%2zu] '%s' at offset %#" PRIx64
7815 " contains %" PRId64 " bytes :\n"),
7816 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
7817 (uint64_t) shdr->sh_offset, (uint64_t) shdr->sh_size);
7819 Elf_Data *data = elf_rawdata (scn, NULL);
7821 if (unlikely (data == NULL))
7823 error (0, 0, gettext ("cannot get %s content: %s"),
7824 ".gdb_index", elf_errmsg (-1));
7828 // .gdb_index is always in little endian.
7829 Dwarf dummy_dbg = { .other_byte_order = MY_ELFDATA != ELFDATA2LSB };
7832 const unsigned char *readp = data->d_buf;
7833 const unsigned char *const dataend = readp + data->d_size;
7835 if (unlikely (readp + 4 > dataend))
7838 error (0, 0, gettext ("invalid data"));
7842 int32_t vers = read_4ubyte_unaligned (dbg, readp);
7843 printf (gettext (" Version: %" PRId32 "\n"), vers);
7845 // The only difference between version 4 and version 5 is the
7846 // hash used for generating the table. Version 6 contains symbols
7847 // for inlined functions, older versions didn't. Version 7 adds
7848 // symbol kinds. Version 8 just indicates that it correctly includes
7850 if (vers < 4 || vers > 8)
7852 printf (gettext (" unknown version, cannot parse section\n"));
7857 if (unlikely (readp + 4 > dataend))
7860 uint32_t cu_off = read_4ubyte_unaligned (dbg, readp);
7861 printf (gettext (" CU offset: %#" PRIx32 "\n"), cu_off);
7864 if (unlikely (readp + 4 > dataend))
7867 uint32_t tu_off = read_4ubyte_unaligned (dbg, readp);
7868 printf (gettext (" TU offset: %#" PRIx32 "\n"), tu_off);
7871 if (unlikely (readp + 4 > dataend))
7874 uint32_t addr_off = read_4ubyte_unaligned (dbg, readp);
7875 printf (gettext (" address offset: %#" PRIx32 "\n"), addr_off);
7878 if (unlikely (readp + 4 > dataend))
7881 uint32_t sym_off = read_4ubyte_unaligned (dbg, readp);
7882 printf (gettext (" symbol offset: %#" PRIx32 "\n"), sym_off);
7885 if (unlikely (readp + 4 > dataend))
7888 uint32_t const_off = read_4ubyte_unaligned (dbg, readp);
7889 printf (gettext (" constant offset: %#" PRIx32 "\n"), const_off);
7891 readp = data->d_buf + cu_off;
7893 const unsigned char *nextp = data->d_buf + tu_off;
7894 size_t cu_nr = (nextp - readp) / 16;
7896 printf (gettext ("\n CU list at offset %#" PRIx32
7897 " contains %zu entries:\n"),
7901 while (readp + 16 <= dataend && n < cu_nr)
7903 uint64_t off = read_8ubyte_unaligned (dbg, readp);
7906 uint64_t len = read_8ubyte_unaligned (dbg, readp);
7909 printf (" [%4zu] start: %0#8" PRIx64
7910 ", length: %5" PRIu64 "\n", n, off, len);
7914 readp = data->d_buf + tu_off;
7915 nextp = data->d_buf + addr_off;
7916 size_t tu_nr = (nextp - readp) / 24;
7918 printf (gettext ("\n TU list at offset %#" PRIx32
7919 " contains %zu entries:\n"),
7923 while (readp + 24 <= dataend && n < tu_nr)
7925 uint64_t off = read_8ubyte_unaligned (dbg, readp);
7928 uint64_t type = read_8ubyte_unaligned (dbg, readp);
7931 uint64_t sig = read_8ubyte_unaligned (dbg, readp);
7934 printf (" [%4zu] CU offset: %5" PRId64
7935 ", type offset: %5" PRId64
7936 ", signature: %0#8" PRIx64 "\n", n, off, type, sig);
7940 readp = data->d_buf + addr_off;
7941 nextp = data->d_buf + sym_off;
7942 size_t addr_nr = (nextp - readp) / 20;
7944 printf (gettext ("\n Address list at offset %#" PRIx32
7945 " contains %zu entries:\n"),
7949 while (readp + 20 <= dataend && n < addr_nr)
7951 uint64_t low = read_8ubyte_unaligned (dbg, readp);
7954 uint64_t high = read_8ubyte_unaligned (dbg, readp);
7957 uint32_t idx = read_4ubyte_unaligned (dbg, readp);
7960 char *l = format_dwarf_addr (dwflmod, 8, low, low);
7961 char *h = format_dwarf_addr (dwflmod, 8, high - 1, high);
7962 printf (" [%4zu] %s..%s, CU index: %5" PRId32 "\n",
7969 readp = data->d_buf + sym_off;
7970 nextp = data->d_buf + const_off;
7971 size_t sym_nr = (nextp - readp) / 8;
7973 printf (gettext ("\n Symbol table at offset %#" PRIx32
7974 " contains %zu slots:\n"),
7978 while (readp + 8 <= dataend && n < sym_nr)
7980 uint32_t name = read_4ubyte_unaligned (dbg, readp);
7983 uint32_t vector = read_4ubyte_unaligned (dbg, readp);
7986 if (name != 0 || vector != 0)
7988 const unsigned char *sym = data->d_buf + const_off + name;
7989 if (unlikely (sym > dataend))
7992 printf (" [%4zu] symbol: %s, CUs: ", n, sym);
7994 const unsigned char *readcus = data->d_buf + const_off + vector;
7995 if (unlikely (readcus + 8 > dataend))
7998 uint32_t cus = read_4ubyte_unaligned (dbg, readcus);
8001 uint32_t cu_kind, cu, kind;
8004 cu_kind = read_4ubyte_unaligned (dbg, readcus);
8005 cu = cu_kind & ((1 << 24) - 1);
8006 kind = (cu_kind >> 28) & 7;
8007 is_static = cu_kind & (1U << 31);
8009 printf ("%" PRId32 "T", cu - (uint32_t) cu_nr);
8011 printf ("%" PRId32, cu);
8030 printf ("unknown-0x%" PRIx32, kind);
8033 printf (":%c)", (is_static ? 'S' : 'G'));
8045 print_debug (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr)
8047 /* Before we start the real work get a debug context descriptor. */
8049 Dwarf *dbg = dwfl_module_getdwarf (dwflmod, &dwbias);
8053 .other_byte_order = MY_ELFDATA != ehdr->e_ident[EI_DATA]
8057 if ((print_debug_sections & ~section_exception) != 0)
8058 error (0, 0, gettext ("cannot get debug context descriptor: %s"),
8060 if ((print_debug_sections & section_exception) == 0)
8065 /* Get the section header string table index. */
8067 if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0))
8068 error (EXIT_FAILURE, 0,
8069 gettext ("cannot get section header string table index"));
8071 /* Look through all the sections for the debugging sections to print. */
8072 Elf_Scn *scn = NULL;
8073 while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
8076 GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
8078 if (shdr != NULL && shdr->sh_type == SHT_PROGBITS)
8083 enum section_e bitmask;
8084 void (*fp) (Dwfl_Module *, Ebl *,
8085 GElf_Ehdr *, Elf_Scn *, GElf_Shdr *, Dwarf *);
8086 } debug_sections[] =
8088 #define NEW_SECTION(name) \
8089 { ".debug_" #name, section_##name, print_debug_##name##_section }
8090 NEW_SECTION (abbrev),
8091 NEW_SECTION (aranges),
8092 NEW_SECTION (frame),
8094 NEW_SECTION (types),
8097 NEW_SECTION (pubnames),
8099 NEW_SECTION (macinfo),
8100 NEW_SECTION (macro),
8101 NEW_SECTION (ranges),
8102 { ".eh_frame", section_frame | section_exception,
8103 print_debug_frame_section },
8104 { ".eh_frame_hdr", section_frame | section_exception,
8105 print_debug_frame_hdr_section },
8106 { ".gcc_except_table", section_frame | section_exception,
8107 print_debug_exception_table },
8108 { ".gdb_index", section_gdb_index, print_gdb_index_section }
8110 const int ndebug_sections = (sizeof (debug_sections)
8111 / sizeof (debug_sections[0]));
8112 const char *name = elf_strptr (ebl->elf, shstrndx,
8118 for (n = 0; n < ndebug_sections; ++n)
8119 if (strcmp (name, debug_sections[n].name) == 0
8121 || (name[0] == '.' && name[1] == 'z'
8122 && debug_sections[n].name[1] == 'd'
8123 && strcmp (&name[2], &debug_sections[n].name[1]) == 0)
8127 if ((print_debug_sections | implicit_debug_sections)
8128 & debug_sections[n].bitmask)
8129 debug_sections[n].fp (dwflmod, ebl, ehdr, scn, shdr, dbg);
8135 reset_listptr (&known_loclistptr);
8136 reset_listptr (&known_rangelistptr);
8140 #define ITEM_INDENT 4
8141 #define WRAP_COLUMN 75
8143 /* Print "NAME: FORMAT", wrapping when output text would make the line
8144 exceed WRAP_COLUMN. Unpadded numbers look better for the core items
8145 but this function is also used for registers which should be printed
8146 aligned. Fortunately registers output uses fixed fields width (such
8147 as %11d) for the alignment.
8149 Line breaks should not depend on the particular values although that
8150 may happen in some cases of the core items. */
8153 __attribute__ ((format (printf, 6, 7)))
8154 print_core_item (unsigned int colno, char sep, unsigned int wrap,
8155 size_t name_width, const char *name, const char *format, ...)
8157 size_t len = strlen (name);
8158 if (name_width < len)
8163 va_start (ap, format);
8164 int out_len = vasprintf (&out, format, ap);
8167 error (EXIT_FAILURE, 0, _("memory exhausted"));
8169 size_t n = name_width + sizeof ": " - 1 + out_len;
8173 printf ("%*s", ITEM_INDENT, "");
8174 colno = ITEM_INDENT + n;
8176 else if (colno + 2 + n < wrap)
8178 printf ("%c ", sep);
8183 printf ("\n%*s", ITEM_INDENT, "");
8184 colno = ITEM_INDENT + n;
8187 printf ("%s: %*s%s", name, (int) (name_width - len), "", out);
8195 convert (Elf *core, Elf_Type type, uint_fast16_t count,
8196 void *value, const void *data, size_t size)
8198 Elf_Data valuedata =
8202 .d_size = size ?: gelf_fsize (core, type, count, EV_CURRENT),
8203 .d_version = EV_CURRENT,
8208 .d_buf = (void *) data,
8209 .d_size = valuedata.d_size,
8210 .d_version = EV_CURRENT,
8213 Elf_Data *d = (gelf_getclass (core) == ELFCLASS32
8214 ? elf32_xlatetom : elf64_xlatetom)
8215 (&valuedata, &indata, elf_getident (core, NULL)[EI_DATA]);
8217 error (EXIT_FAILURE, 0,
8218 gettext ("cannot convert core note data: %s"), elf_errmsg (-1));
8220 return data + indata.d_size;
8223 typedef uint8_t GElf_Byte;
8226 handle_core_item (Elf *core, const Ebl_Core_Item *item, const void *desc,
8227 unsigned int colno, size_t *repeated_size)
8229 uint_fast16_t count = item->count ?: 1;
8232 DO_TYPE (BYTE, Byte, "0x%.2" PRIx8, "%" PRId8); \
8233 DO_TYPE (HALF, Half, "0x%.4" PRIx16, "%" PRId16); \
8234 DO_TYPE (WORD, Word, "0x%.8" PRIx32, "%" PRId32); \
8235 DO_TYPE (SWORD, Sword, "%" PRId32, "%" PRId32); \
8236 DO_TYPE (XWORD, Xword, "0x%.16" PRIx64, "%" PRId64); \
8237 DO_TYPE (SXWORD, Sxword, "%" PRId64, "%" PRId64)
8239 #define DO_TYPE(NAME, Name, hex, dec) GElf_##Name Name[count]
8240 union { TYPES; } value;
8243 void *data = &value;
8244 size_t size = gelf_fsize (core, item->type, count, EV_CURRENT);
8245 size_t convsize = size;
8246 if (repeated_size != NULL)
8248 if (*repeated_size > size && (item->format == 'b' || item->format == 'B'))
8250 data = alloca (*repeated_size);
8251 count *= *repeated_size / size;
8252 convsize = count * size;
8253 *repeated_size -= convsize;
8255 else if (item->count != 0 || item->format != '\n')
8256 *repeated_size -= size;
8259 convert (core, item->type, count, data, desc + item->offset, convsize);
8261 Elf_Type type = item->type;
8262 if (type == ELF_T_ADDR)
8263 type = gelf_getclass (core) == ELFCLASS32 ? ELF_T_WORD : ELF_T_XWORD;
8265 switch (item->format)
8268 assert (count == 1);
8271 #define DO_TYPE(NAME, Name, hex, dec) \
8272 case ELF_T_##NAME: \
8273 colno = print_core_item (colno, ',', WRAP_COLUMN, \
8274 0, item->name, dec, value.Name[0]); \
8284 assert (count == 1);
8287 #define DO_TYPE(NAME, Name, hex, dec) \
8288 case ELF_T_##NAME: \
8289 colno = print_core_item (colno, ',', WRAP_COLUMN, \
8290 0, item->name, hex, value.Name[0]); \
8301 assert (size % sizeof (unsigned int) == 0);
8302 unsigned int nbits = count * size * 8;
8303 unsigned int pop = 0;
8304 for (const unsigned int *i = data; (void *) i < data + count * size; ++i)
8305 pop += __builtin_popcount (*i);
8306 bool negate = pop > nbits / 2;
8307 const unsigned int bias = item->format == 'b';
8310 char printed[(negate ? nbits - pop : pop) * 16 + 1];
8314 if (BYTE_ORDER != LITTLE_ENDIAN && size > sizeof (unsigned int))
8316 assert (size == sizeof (unsigned int) * 2);
8317 for (unsigned int *i = data;
8318 (void *) i < data + count * size; i += 2)
8320 unsigned int w = i[1];
8326 unsigned int lastbit = 0;
8327 unsigned int run = 0;
8328 for (const unsigned int *i = data;
8329 (void *) i < data + count * size; ++i)
8331 unsigned int bit = ((void *) i - data) * 8;
8332 unsigned int w = negate ? ~*i : *i;
8339 if (lastbit != 0 && lastbit + 1 == bit)
8344 p += sprintf (p, "%u", bit - bias);
8346 p += sprintf (p, ",%u", bit - bias);
8348 p += sprintf (p, "-%u,%u", lastbit - bias, bit - bias);
8355 if (lastbit > 0 && run > 0 && lastbit + 1 != nbits)
8356 p += sprintf (p, "-%u", lastbit - bias);
8358 colno = print_core_item (colno, ',', WRAP_COLUMN, 0, item->name,
8359 negate ? "~<%s>" : "<%s>", printed);
8364 case (char) ('T'|0x80):
8365 assert (count == 2);
8370 #define DO_TYPE(NAME, Name, hex, dec) \
8371 case ELF_T_##NAME: \
8372 sec = value.Name[0]; \
8373 usec = value.Name[1]; \
8380 if (unlikely (item->format == (char) ('T'|0x80)))
8382 /* This is a hack for an ill-considered 64-bit ABI where
8383 tv_usec is actually a 32-bit field with 32 bits of padding
8384 rounding out struct timeval. We've already converted it as
8385 a 64-bit field. For little-endian, this just means the
8386 high half is the padding; it's presumably zero, but should
8387 be ignored anyway. For big-endian, it means the 32-bit
8388 field went into the high half of USEC. */
8390 GElf_Ehdr *ehdr = gelf_getehdr (core, &ehdr_mem);
8391 if (likely (ehdr->e_ident[EI_DATA] == ELFDATA2MSB))
8396 colno = print_core_item (colno, ',', WRAP_COLUMN, 0, item->name,
8397 "%" PRIu64 ".%.6" PRIu64, sec, usec);
8401 assert (count == 1);
8402 colno = print_core_item (colno, ',', WRAP_COLUMN, 0, item->name,
8403 "%c", value.Byte[0]);
8407 colno = print_core_item (colno, ',', WRAP_COLUMN, 0, item->name,
8408 "%.*s", (int) count, value.Byte);
8412 /* This is a list of strings separated by '\n'. */
8413 assert (item->count == 0);
8414 assert (repeated_size != NULL);
8415 assert (item->name == NULL);
8416 if (unlikely (item->offset >= *repeated_size))
8419 const char *s = desc + item->offset;
8420 size = *repeated_size - item->offset;
8424 const char *eol = memchr (s, '\n', size);
8428 printf ("%*s%.*s\n", ITEM_INDENT, "", len, s);
8431 size -= eol + 1 - s;
8435 colno = WRAP_COLUMN;
8442 error (0, 0, "XXX not handling format '%c' for %s",
8443 item->format, item->name);
8453 /* Sort items by group, and by layout offset within each group. */
8455 compare_core_items (const void *a, const void *b)
8457 const Ebl_Core_Item *const *p1 = a;
8458 const Ebl_Core_Item *const *p2 = b;
8459 const Ebl_Core_Item *item1 = *p1;
8460 const Ebl_Core_Item *item2 = *p2;
8462 return ((item1->group == item2->group ? 0
8463 : strcmp (item1->group, item2->group))
8464 ?: (int) item1->offset - (int) item2->offset);
8467 /* Sort item groups by layout offset of the first item in the group. */
8469 compare_core_item_groups (const void *a, const void *b)
8471 const Ebl_Core_Item *const *const *p1 = a;
8472 const Ebl_Core_Item *const *const *p2 = b;
8473 const Ebl_Core_Item *const *group1 = *p1;
8474 const Ebl_Core_Item *const *group2 = *p2;
8475 const Ebl_Core_Item *item1 = *group1;
8476 const Ebl_Core_Item *item2 = *group2;
8478 return (int) item1->offset - (int) item2->offset;
8482 handle_core_items (Elf *core, const void *desc, size_t descsz,
8483 const Ebl_Core_Item *items, size_t nitems)
8487 unsigned int colno = 0;
8489 /* FORMAT '\n' makes sense to be present only as a single item as it
8490 processes all the data of a note. FORMATs 'b' and 'B' have a special case
8491 if present as a single item but they can be also processed with other
8493 if (nitems == 1 && (items[0].format == '\n' || items[0].format == 'b'
8494 || items[0].format == 'B'))
8496 assert (items[0].offset == 0);
8497 size_t size = descsz;
8498 colno = handle_core_item (core, items, desc, colno, &size);
8499 /* If SIZE is not zero here there is some remaining data. But we do not
8500 know how to process it anyway. */
8503 for (size_t i = 0; i < nitems; ++i)
8504 assert (items[i].format != '\n');
8506 /* Sort to collect the groups together. */
8507 const Ebl_Core_Item *sorted_items[nitems];
8508 for (size_t i = 0; i < nitems; ++i)
8509 sorted_items[i] = &items[i];
8510 qsort (sorted_items, nitems, sizeof sorted_items[0], &compare_core_items);
8512 /* Collect the unique groups and sort them. */
8513 const Ebl_Core_Item **groups[nitems];
8514 groups[0] = &sorted_items[0];
8516 for (size_t i = 1; i < nitems; ++i)
8517 if (sorted_items[i]->group != sorted_items[i - 1]->group
8518 && strcmp (sorted_items[i]->group, sorted_items[i - 1]->group))
8519 groups[ngroups++] = &sorted_items[i];
8520 qsort (groups, ngroups, sizeof groups[0], &compare_core_item_groups);
8522 /* Write out all the groups. */
8523 const void *last = desc;
8526 for (size_t i = 0; i < ngroups; ++i)
8528 for (const Ebl_Core_Item **item = groups[i];
8529 (item < &sorted_items[nitems]
8530 && ((*item)->group == groups[i][0]->group
8531 || !strcmp ((*item)->group, groups[i][0]->group)));
8533 colno = handle_core_item (core, *item, desc, colno, NULL);
8535 /* Force a line break at the end of the group. */
8536 colno = WRAP_COLUMN;
8542 /* This set of items consumed a certain amount of the note's data.
8543 If there is more data there, we have another unit of the same size.
8544 Loop to print that out too. */
8545 const Ebl_Core_Item *item = &items[nitems - 1];
8546 size_t eltsz = item->offset + gelf_fsize (core, item->type,
8547 item->count ?: 1, EV_CURRENT);
8556 while (descsz >= eltsz && !memcmp (desc, last, eltsz));
8560 /* For just one repeat, print it unabridged twice. */
8565 printf (gettext ("\n%*s... <repeats %u more times> ..."),
8566 ITEM_INDENT, "", reps);
8576 handle_bit_registers (const Ebl_Register_Location *regloc, const void *desc,
8579 desc += regloc->offset;
8587 handle_core_register (Ebl *ebl, Elf *core, int maxregname,
8588 const Ebl_Register_Location *regloc, const void *desc,
8591 if (regloc->bits % 8 != 0)
8592 return handle_bit_registers (regloc, desc, colno);
8594 desc += regloc->offset;
8596 for (int reg = regloc->regno; reg < regloc->regno + regloc->count; ++reg)
8598 char name[REGNAMESZ];
8601 register_info (ebl, reg, regloc, name, &bits, &type);
8604 BITS (8, BYTE, "%4" PRId8, "0x%.2" PRIx8); \
8605 BITS (16, HALF, "%6" PRId16, "0x%.4" PRIx16); \
8606 BITS (32, WORD, "%11" PRId32, " 0x%.8" PRIx32); \
8607 BITS (64, XWORD, "%20" PRId64, " 0x%.16" PRIx64)
8609 #define BITS(bits, xtype, sfmt, ufmt) \
8610 uint##bits##_t b##bits; int##bits##_t b##bits##s
8611 union { TYPES; uint64_t b128[2]; } value;
8616 case DW_ATE_unsigned:
8618 case DW_ATE_address:
8621 #define BITS(bits, xtype, sfmt, ufmt) \
8623 desc = convert (core, ELF_T_##xtype, 1, &value, desc, 0); \
8624 if (type == DW_ATE_signed) \
8625 colno = print_core_item (colno, ' ', WRAP_COLUMN, \
8627 sfmt, value.b##bits##s); \
8629 colno = print_core_item (colno, ' ', WRAP_COLUMN, \
8631 ufmt, value.b##bits); \
8637 assert (type == DW_ATE_unsigned);
8638 desc = convert (core, ELF_T_XWORD, 2, &value, desc, 0);
8639 int be = elf_getident (core, NULL)[EI_DATA] == ELFDATA2MSB;
8640 colno = print_core_item (colno, ' ', WRAP_COLUMN,
8642 "0x%.16" PRIx64 "%.16" PRIx64,
8643 value.b128[!be], value.b128[be]);
8653 /* Print each byte in hex, the whole thing in native byte order. */
8654 assert (bits % 8 == 0);
8655 const uint8_t *bytes = desc;
8657 char hex[bits / 4 + 1];
8658 hex[bits / 4] = '\0';
8660 if (elf_getident (core, NULL)[EI_DATA] == ELFDATA2LSB)
8662 bytes += bits / 8 - 1;
8666 for (char *h = hex; bits > 0; bits -= 8, idx += incr)
8668 *h++ = "0123456789abcdef"[bytes[idx] >> 4];
8669 *h++ = "0123456789abcdef"[bytes[idx] & 0xf];
8671 colno = print_core_item (colno, ' ', WRAP_COLUMN,
8672 maxregname, name, "0x%s", hex);
8675 desc += regloc->pad;
8684 struct register_info
8686 const Ebl_Register_Location *regloc;
8688 char name[REGNAMESZ];
8695 register_bitpos (const struct register_info *r)
8697 return (r->regloc->offset * 8
8698 + ((r->regno - r->regloc->regno)
8699 * (r->regloc->bits + r->regloc->pad * 8)));
8703 compare_sets_by_info (const struct register_info *r1,
8704 const struct register_info *r2)
8706 return ((int) r2->bits - (int) r1->bits
8707 ?: register_bitpos (r1) - register_bitpos (r2));
8710 /* Sort registers by set, and by size and layout offset within each set. */
8712 compare_registers (const void *a, const void *b)
8714 const struct register_info *r1 = a;
8715 const struct register_info *r2 = b;
8717 /* Unused elements sort last. */
8718 if (r1->regloc == NULL)
8719 return r2->regloc == NULL ? 0 : 1;
8720 if (r2->regloc == NULL)
8723 return ((r1->set == r2->set ? 0 : strcmp (r1->set, r2->set))
8724 ?: compare_sets_by_info (r1, r2));
8727 /* Sort register sets by layout offset of the first register in the set. */
8729 compare_register_sets (const void *a, const void *b)
8731 const struct register_info *const *p1 = a;
8732 const struct register_info *const *p2 = b;
8733 return compare_sets_by_info (*p1, *p2);
8737 handle_core_registers (Ebl *ebl, Elf *core, const void *desc,
8738 const Ebl_Register_Location *reglocs, size_t nregloc)
8743 ssize_t maxnreg = ebl_register_info (ebl, 0, NULL, 0, NULL, NULL, NULL, NULL);
8746 for (size_t i = 0; i < nregloc; ++i)
8747 if (maxnreg < reglocs[i].regno + reglocs[i].count)
8748 maxnreg = reglocs[i].regno + reglocs[i].count;
8749 assert (maxnreg > 0);
8752 struct register_info regs[maxnreg];
8753 memset (regs, 0, sizeof regs);
8755 /* Sort to collect the sets together. */
8757 for (size_t i = 0; i < nregloc; ++i)
8758 for (int reg = reglocs[i].regno;
8759 reg < reglocs[i].regno + reglocs[i].count;
8762 assert (reg < maxnreg);
8765 struct register_info *info = ®s[reg];
8766 info->regloc = ®locs[i];
8768 info->set = register_info (ebl, reg, ®locs[i],
8769 info->name, &info->bits, &info->type);
8771 qsort (regs, maxreg + 1, sizeof regs[0], &compare_registers);
8773 /* Collect the unique sets and sort them. */
8774 inline bool same_set (const struct register_info *a,
8775 const struct register_info *b)
8777 return (a < ®s[maxnreg] && a->regloc != NULL
8778 && b < ®s[maxnreg] && b->regloc != NULL
8779 && a->bits == b->bits
8780 && (a->set == b->set || !strcmp (a->set, b->set)));
8782 struct register_info *sets[maxreg + 1];
8785 for (int i = 1; i <= maxreg; ++i)
8786 if (regs[i].regloc != NULL && !same_set (®s[i], ®s[i - 1]))
8787 sets[nsets++] = ®s[i];
8788 qsort (sets, nsets, sizeof sets[0], &compare_register_sets);
8790 /* Write out all the sets. */
8791 unsigned int colno = 0;
8792 for (size_t i = 0; i < nsets; ++i)
8794 /* Find the longest name of a register in this set. */
8796 const struct register_info *end;
8797 for (end = sets[i]; same_set (sets[i], end); ++end)
8799 size_t len = strlen (end->name);
8804 for (const struct register_info *reg = sets[i];
8806 reg += reg->regloc->count ?: 1)
8807 colno = handle_core_register (ebl, core, maxname,
8808 reg->regloc, desc, colno);
8810 /* Force a line break at the end of the group. */
8811 colno = WRAP_COLUMN;
8818 handle_auxv_note (Ebl *ebl, Elf *core, GElf_Word descsz, GElf_Off desc_pos)
8820 Elf_Data *data = elf_getdata_rawchunk (core, desc_pos, descsz, ELF_T_AUXV);
8823 error (EXIT_FAILURE, 0,
8824 gettext ("cannot convert core note data: %s"), elf_errmsg (-1));
8826 const size_t nauxv = descsz / gelf_fsize (core, ELF_T_AUXV, 1, EV_CURRENT);
8827 for (size_t i = 0; i < nauxv; ++i)
8830 GElf_auxv_t *av = gelf_getauxv (data, i, &av_mem);
8836 if (ebl_auxv_info (ebl, av->a_type, &name, &fmt) == 0)
8839 if (av->a_un.a_val == 0)
8840 printf (" %" PRIu64 "\n", av->a_type);
8842 printf (" %" PRIu64 ": %#" PRIx64 "\n",
8843 av->a_type, av->a_un.a_val);
8848 case '\0': /* Normally zero. */
8849 if (av->a_un.a_val == 0)
8851 printf (" %s\n", name);
8856 case 'p': /* address */
8857 case 's': /* address of string */
8858 printf (" %s: %#" PRIx64 "\n", name, av->a_un.a_val);
8861 printf (" %s: %" PRIu64 "\n", name, av->a_un.a_val);
8864 printf (" %s: %" PRId64 "\n", name, av->a_un.a_val);
8868 printf (" %s: %#" PRIx64 " ", name, av->a_un.a_val);
8870 const char *pfx = "<";
8871 for (const char *p = fmt + 1; *p != 0; p = strchr (p, '\0') + 1)
8873 if (av->a_un.a_val & bit)
8875 printf ("%s%s", pfx, p);
8890 buf_has_data (unsigned char const *ptr, unsigned char const *end, size_t sz)
8892 return ptr < end && (size_t) (end - ptr) >= sz;
8896 buf_read_int (Elf *core, unsigned char const **ptrp, unsigned char const *end,
8899 if (! buf_has_data (*ptrp, end, 4))
8902 *ptrp = convert (core, ELF_T_WORD, 1, retp, *ptrp, 4);
8907 buf_read_ulong (Elf *core, unsigned char const **ptrp, unsigned char const *end,
8910 size_t sz = gelf_fsize (core, ELF_T_ADDR, 1, EV_CURRENT);
8911 if (! buf_has_data (*ptrp, end, sz))
8920 *ptrp = convert (core, ELF_T_ADDR, 1, &u, *ptrp, sz);
8930 handle_siginfo_note (Elf *core, GElf_Word descsz, GElf_Off desc_pos)
8932 Elf_Data *data = elf_getdata_rawchunk (core, desc_pos, descsz, ELF_T_BYTE);
8934 error (EXIT_FAILURE, 0,
8935 gettext ("cannot convert core note data: %s"), elf_errmsg (-1));
8937 unsigned char const *ptr = data->d_buf;
8938 unsigned char const *const end = data->d_buf + data->d_size;
8940 /* Siginfo head is three ints: signal number, error number, origin
8942 int si_signo, si_errno, si_code;
8943 if (! buf_read_int (core, &ptr, end, &si_signo)
8944 || ! buf_read_int (core, &ptr, end, &si_errno)
8945 || ! buf_read_int (core, &ptr, end, &si_code))
8948 printf (" Not enough data in NT_SIGINFO note.\n");
8952 /* Next is a pointer-aligned union of structures. On 64-bit
8953 machines, that implies a word of padding. */
8954 if (gelf_getclass (core) == ELFCLASS64)
8957 printf (" si_signo: %d, si_errno: %d, si_code: %d\n",
8958 si_signo, si_errno, si_code);
8969 if (! buf_read_ulong (core, &ptr, end, &addr))
8971 printf (" fault address: %#" PRIx64 "\n", addr);
8977 else if (si_code == SI_USER)
8980 if (! buf_read_int (core, &ptr, end, &pid)
8981 || ! buf_read_int (core, &ptr, end, &uid))
8983 printf (" sender PID: %d, sender UID: %d\n", pid, uid);
8988 handle_file_note (Elf *core, GElf_Word descsz, GElf_Off desc_pos)
8990 Elf_Data *data = elf_getdata_rawchunk (core, desc_pos, descsz, ELF_T_BYTE);
8992 error (EXIT_FAILURE, 0,
8993 gettext ("cannot convert core note data: %s"), elf_errmsg (-1));
8995 unsigned char const *ptr = data->d_buf;
8996 unsigned char const *const end = data->d_buf + data->d_size;
8998 uint64_t count, page_size;
8999 if (! buf_read_ulong (core, &ptr, end, &count)
9000 || ! buf_read_ulong (core, &ptr, end, &page_size))
9003 printf (" Not enough data in NT_FILE note.\n");
9007 /* Where file names are stored. */
9008 unsigned char const *const fstart
9009 = ptr + 3 * count * gelf_fsize (core, ELF_T_ADDR, 1, EV_CURRENT);
9010 char const *fptr = (char *) fstart;
9012 printf (" %" PRId64 " files:\n", count);
9013 for (uint64_t i = 0; i < count; ++i)
9015 uint64_t mstart, mend, moffset;
9016 if (! buf_read_ulong (core, &ptr, fstart, &mstart)
9017 || ! buf_read_ulong (core, &ptr, fstart, &mend)
9018 || ! buf_read_ulong (core, &ptr, fstart, &moffset))
9021 const char *fnext = memchr (fptr, '\0', (char *) end - fptr);
9025 int ct = printf (" %08" PRIx64 "-%08" PRIx64
9026 " %08" PRIx64 " %" PRId64,
9027 mstart, mend, moffset * page_size, mend - mstart);
9028 printf ("%*s%s\n", ct > 50 ? 3 : 53 - ct, "", fptr);
9035 handle_core_note (Ebl *ebl, const GElf_Nhdr *nhdr,
9036 const char *name, const void *desc)
9038 GElf_Word regs_offset;
9040 const Ebl_Register_Location *reglocs;
9042 const Ebl_Core_Item *items;
9044 if (! ebl_core_note (ebl, nhdr, name,
9045 ®s_offset, &nregloc, ®locs, &nitems, &items))
9048 /* Pass 0 for DESCSZ when there are registers in the note,
9049 so that the ITEMS array does not describe the whole thing.
9050 For non-register notes, the actual descsz might be a multiple
9051 of the unit size, not just exactly the unit size. */
9052 unsigned int colno = handle_core_items (ebl->elf, desc,
9053 nregloc == 0 ? nhdr->n_descsz : 0,
9056 putchar_unlocked ('\n');
9058 colno = handle_core_registers (ebl, ebl->elf, desc + regs_offset,
9061 putchar_unlocked ('\n');
9065 handle_notes_data (Ebl *ebl, const GElf_Ehdr *ehdr,
9066 GElf_Off start, Elf_Data *data)
9068 fputs_unlocked (gettext (" Owner Data size Type\n"), stdout);
9077 while (offset < data->d_size
9078 && (offset = gelf_getnote (data, offset,
9079 &nhdr, &name_offset, &desc_offset)) > 0)
9081 const char *name = data->d_buf + name_offset;
9082 const char *desc = data->d_buf + desc_offset;
9086 printf (gettext (" %-13.*s %9" PRId32 " %s\n"),
9087 (int) nhdr.n_namesz, name, nhdr.n_descsz,
9088 ehdr->e_type == ET_CORE
9089 ? ebl_core_note_type_name (ebl, nhdr.n_type,
9091 : ebl_object_note_type_name (ebl, name, nhdr.n_type,
9092 buf2, sizeof (buf2)));
9094 /* Filter out invalid entries. */
9095 if (memchr (name, '\0', nhdr.n_namesz) != NULL
9096 /* XXX For now help broken Linux kernels. */
9099 if (ehdr->e_type == ET_CORE)
9101 if (nhdr.n_type == NT_AUXV
9102 && (nhdr.n_namesz == 4 /* Broken old Linux kernels. */
9103 || (nhdr.n_namesz == 5 && name[4] == '\0'))
9104 && !memcmp (name, "CORE", 4))
9105 handle_auxv_note (ebl, ebl->elf, nhdr.n_descsz,
9106 start + desc_offset);
9107 else if (nhdr.n_namesz == 5 && strcmp (name, "CORE") == 0)
9108 switch (nhdr.n_type)
9111 handle_siginfo_note (ebl->elf, nhdr.n_descsz,
9112 start + desc_offset);
9116 handle_file_note (ebl->elf, nhdr.n_descsz,
9117 start + desc_offset);
9121 handle_core_note (ebl, &nhdr, name, desc);
9124 handle_core_note (ebl, &nhdr, name, desc);
9127 ebl_object_note (ebl, name, nhdr.n_type, nhdr.n_descsz, desc);
9131 if (offset == data->d_size)
9135 error (EXIT_FAILURE, 0,
9136 gettext ("cannot get content of note section: %s"),
9141 handle_notes (Ebl *ebl, GElf_Ehdr *ehdr)
9143 /* If we have section headers, just look for SHT_NOTE sections.
9144 In a debuginfo file, the program headers are not reliable. */
9147 /* Get the section header string table index. */
9149 if (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0)
9150 error (EXIT_FAILURE, 0,
9151 gettext ("cannot get section header string table index"));
9153 Elf_Scn *scn = NULL;
9154 while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
9157 GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
9159 if (shdr == NULL || shdr->sh_type != SHT_NOTE)
9160 /* Not what we are looking for. */
9164 \nNote section [%2zu] '%s' of %" PRIu64 " bytes at offset %#0" PRIx64 ":\n"),
9166 elf_strptr (ebl->elf, shstrndx, shdr->sh_name),
9167 shdr->sh_size, shdr->sh_offset);
9169 handle_notes_data (ebl, ehdr, shdr->sh_offset,
9170 elf_getdata (scn, NULL));
9175 /* We have to look through the program header to find the note
9176 sections. There can be more than one. */
9177 for (size_t cnt = 0; cnt < phnum; ++cnt)
9180 GElf_Phdr *phdr = gelf_getphdr (ebl->elf, cnt, &mem);
9182 if (phdr == NULL || phdr->p_type != PT_NOTE)
9183 /* Not what we are looking for. */
9187 \nNote segment of %" PRIu64 " bytes at offset %#0" PRIx64 ":\n"),
9188 phdr->p_filesz, phdr->p_offset);
9190 handle_notes_data (ebl, ehdr, phdr->p_offset,
9191 elf_getdata_rawchunk (ebl->elf,
9192 phdr->p_offset, phdr->p_filesz,
9199 hex_dump (const uint8_t *data, size_t len)
9204 printf (" 0x%08Zx ", pos);
9206 const size_t chunk = MIN (len - pos, 16);
9208 for (size_t i = 0; i < chunk; ++i)
9210 printf ("%02x ", data[pos + i]);
9212 printf ("%02x", data[pos + i]);
9215 printf ("%*s", (int) ((16 - chunk) * 2 + (16 - chunk + 3) / 4), "");
9217 for (size_t i = 0; i < chunk; ++i)
9219 unsigned char b = data[pos + i];
9220 printf ("%c", isprint (b) ? b : '.');
9229 dump_data_section (Elf_Scn *scn, const GElf_Shdr *shdr, const char *name)
9231 if (shdr->sh_size == 0 || shdr->sh_type == SHT_NOBITS)
9232 printf (gettext ("\nSection [%Zu] '%s' has no data to dump.\n"),
9233 elf_ndxscn (scn), name);
9236 Elf_Data *data = elf_rawdata (scn, NULL);
9238 error (0, 0, gettext ("cannot get data for section [%Zu] '%s': %s"),
9239 elf_ndxscn (scn), name, elf_errmsg (-1));
9242 printf (gettext ("\nHex dump of section [%Zu] '%s', %" PRIu64
9243 " bytes at offset %#0" PRIx64 ":\n"),
9244 elf_ndxscn (scn), name,
9245 shdr->sh_size, shdr->sh_offset);
9246 hex_dump (data->d_buf, data->d_size);
9252 print_string_section (Elf_Scn *scn, const GElf_Shdr *shdr, const char *name)
9254 if (shdr->sh_size == 0 || shdr->sh_type == SHT_NOBITS)
9255 printf (gettext ("\nSection [%Zu] '%s' has no strings to dump.\n"),
9256 elf_ndxscn (scn), name);
9259 Elf_Data *data = elf_rawdata (scn, NULL);
9261 error (0, 0, gettext ("cannot get data for section [%Zu] '%s': %s"),
9262 elf_ndxscn (scn), name, elf_errmsg (-1));
9265 printf (gettext ("\nString section [%Zu] '%s' contains %" PRIu64
9266 " bytes at offset %#0" PRIx64 ":\n"),
9267 elf_ndxscn (scn), name,
9268 shdr->sh_size, shdr->sh_offset);
9270 const char *start = data->d_buf;
9271 const char *const limit = start + data->d_size;
9274 const char *end = memchr (start, '\0', limit - start);
9275 const size_t pos = start - (const char *) data->d_buf;
9276 if (unlikely (end == NULL))
9278 printf (" [%6Zx]- %.*s\n",
9279 pos, (int) (limit - start), start);
9282 printf (" [%6Zx] %s\n", pos, start);
9284 } while (start < limit);
9290 for_each_section_argument (Elf *elf, const struct section_argument *list,
9291 void (*dump) (Elf_Scn *scn, const GElf_Shdr *shdr,
9294 /* Get the section header string table index. */
9296 if (elf_getshdrstrndx (elf, &shstrndx) < 0)
9297 error (EXIT_FAILURE, 0,
9298 gettext ("cannot get section header string table index"));
9300 for (const struct section_argument *a = list; a != NULL; a = a->next)
9304 const char *name = NULL;
9307 unsigned long int shndx = strtoul (a->arg, &endp, 0);
9308 if (endp != a->arg && *endp == '\0')
9310 scn = elf_getscn (elf, shndx);
9313 error (0, 0, gettext ("\nsection [%lu] does not exist"), shndx);
9317 if (gelf_getshdr (scn, &shdr_mem) == NULL)
9318 error (EXIT_FAILURE, 0, gettext ("cannot get section header: %s"),
9320 name = elf_strptr (elf, shstrndx, shdr_mem.sh_name);
9324 /* Need to look up the section by name. */
9327 while ((scn = elf_nextscn (elf, scn)) != NULL)
9329 if (gelf_getshdr (scn, &shdr_mem) == NULL)
9331 name = elf_strptr (elf, shstrndx, shdr_mem.sh_name);
9334 if (!strcmp (name, a->arg))
9337 (*dump) (scn, &shdr_mem, name);
9341 if (unlikely (!found) && !a->implicit)
9342 error (0, 0, gettext ("\nsection '%s' does not exist"), a->arg);
9348 dump_data (Ebl *ebl)
9350 for_each_section_argument (ebl->elf, dump_data_sections, &dump_data_section);
9354 dump_strings (Ebl *ebl)
9356 for_each_section_argument (ebl->elf, string_sections, &print_string_section);
9360 print_strings (Ebl *ebl)
9362 /* Get the section header string table index. */
9364 if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0))
9365 error (EXIT_FAILURE, 0,
9366 gettext ("cannot get section header string table index"));
9372 while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
9374 if (gelf_getshdr (scn, &shdr_mem) == NULL)
9377 if (shdr_mem.sh_type != SHT_PROGBITS
9378 || !(shdr_mem.sh_flags & SHF_STRINGS))
9381 name = elf_strptr (ebl->elf, shstrndx, shdr_mem.sh_name);
9385 print_string_section (scn, &shdr_mem, name);
9390 dump_archive_index (Elf *elf, const char *fname)
9393 const Elf_Arsym *arsym = elf_getarsym (elf, &narsym);
9396 int result = elf_errno ();
9397 if (unlikely (result != ELF_E_NO_INDEX))
9398 error (EXIT_FAILURE, 0,
9399 gettext ("cannot get symbol index of archive '%s': %s"),
9400 fname, elf_errmsg (result));
9402 printf (gettext ("\nArchive '%s' has no symbol index\n"), fname);
9406 printf (gettext ("\nIndex of archive '%s' has %Zu entries:\n"),
9410 for (const Elf_Arsym *s = arsym; s < &arsym[narsym - 1]; ++s)
9412 if (s->as_off != as_off)
9417 if (unlikely (elf_rand (elf, as_off) == 0)
9418 || unlikely ((subelf = elf_begin (-1, ELF_C_READ_MMAP, elf))
9420 #if __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 7)
9423 error (EXIT_FAILURE, 0,
9424 gettext ("cannot extract member at offset %Zu in '%s': %s"),
9425 as_off, fname, elf_errmsg (-1));
9427 const Elf_Arhdr *h = elf_getarhdr (subelf);
9429 printf (gettext ("Archive member '%s' contains:\n"), h->ar_name);
9434 printf ("\t%s\n", s->as_name);
9438 #include "debugpred.h"