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, p);
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, q);
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, q);
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);
3984 else if (addrsize == 8)
3985 addr = read_8ubyte_unaligned (dbg, data);
3991 char *a = format_dwarf_addr (dwflmod, 0, addr, addr);
3992 printf ("%*s[%4" PRIuMAX "] %s %s\n",
3993 indent, "", (uintmax_t) offset, op_name, a);
3996 offset += 1 + addrsize;
3999 case DW_OP_call_ref:
4000 /* Offset operand. */
4001 if (ref_size != 4 && ref_size != 8)
4002 goto invalid; /* Cannot be used in CFA. */
4005 addr = read_4ubyte_unaligned (dbg, data);
4007 addr = read_8ubyte_unaligned (dbg, data);
4011 printf ("%*s[%4" PRIuMAX "] %s %#" PRIxMAX "\n",
4012 indent, "", (uintmax_t) offset,
4013 op_name, (uintmax_t) addr);
4014 offset += 1 + ref_size;
4017 case DW_OP_deref_size:
4018 case DW_OP_xderef_size:
4021 // XXX value might be modified by relocation
4023 printf ("%*s[%4" PRIuMAX "] %s %" PRIu8 "\n",
4024 indent, "", (uintmax_t) offset,
4025 op_name, *((uint8_t *) data));
4033 // XXX value might be modified by relocation
4034 printf ("%*s[%4" PRIuMAX "] %s %" PRIu16 "\n",
4035 indent, "", (uintmax_t) offset,
4036 op_name, read_2ubyte_unaligned (dbg, data));
4044 // XXX value might be modified by relocation
4045 printf ("%*s[%4" PRIuMAX "] %s %" PRIu32 "\n",
4046 indent, "", (uintmax_t) offset,
4047 op_name, read_4ubyte_unaligned (dbg, data));
4055 // XXX value might be modified by relocation
4056 printf ("%*s[%4" PRIuMAX "] %s %" PRIu64 "\n",
4057 indent, "", (uintmax_t) offset,
4058 op_name, (uint64_t) read_8ubyte_unaligned (dbg, data));
4066 // XXX value might be modified by relocation
4067 printf ("%*s[%4" PRIuMAX "] %s %" PRId8 "\n",
4068 indent, "", (uintmax_t) offset,
4069 op_name, *((int8_t *) data));
4077 // XXX value might be modified by relocation
4078 printf ("%*s[%4" PRIuMAX "] %s %" PRId16 "\n",
4079 indent, "", (uintmax_t) offset,
4080 op_name, read_2sbyte_unaligned (dbg, data));
4088 // XXX value might be modified by relocation
4089 printf ("%*s[%4" PRIuMAX "] %s %" PRId32 "\n",
4090 indent, "", (uintmax_t) offset,
4091 op_name, read_4sbyte_unaligned (dbg, data));
4099 // XXX value might be modified by relocation
4100 printf ("%*s[%4" PRIuMAX "] %s %" PRId64 "\n",
4101 indent, "", (uintmax_t) offset,
4102 op_name, read_8sbyte_unaligned (dbg, data));
4110 case DW_OP_plus_uconst:
4112 const unsigned char *start = data;
4115 get_uleb128 (uleb, data, data + len);
4116 printf ("%*s[%4" PRIuMAX "] %s %" PRIu64 "\n",
4117 indent, "", (uintmax_t) offset, op_name, uleb);
4118 CONSUME (data - start);
4119 offset += 1 + (data - start);
4122 case DW_OP_bit_piece:
4126 get_uleb128 (uleb, data, data + len);
4128 get_uleb128 (uleb2, data, data + len);
4129 printf ("%*s[%4" PRIuMAX "] %s %" PRIu64 ", %" PRIu64 "\n",
4130 indent, "", (uintmax_t) offset, op_name, uleb, uleb2);
4131 CONSUME (data - start);
4132 offset += 1 + (data - start);
4136 case DW_OP_breg0 ... DW_OP_breg31:
4141 get_sleb128 (sleb, data, data + len);
4142 printf ("%*s[%4" PRIuMAX "] %s %" PRId64 "\n",
4143 indent, "", (uintmax_t) offset, op_name, sleb);
4144 CONSUME (data - start);
4145 offset += 1 + (data - start);
4151 get_uleb128 (uleb, data, data + len);
4153 get_sleb128 (sleb, data, data + len);
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, data + len);
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. */
4206 if (ref_size != 4 && ref_size != 8)
4207 goto invalid; /* Cannot be used in CFA. */
4209 addr = read_4ubyte_unaligned (dbg, data);
4211 addr = read_8ubyte_unaligned (dbg, data);
4213 /* Byte offset operand. */
4215 get_sleb128 (sleb, data, data + len);
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, data + len);
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, data + len);
4245 if (! print_unresolved_addresses && cu != NULL)
4248 uint8_t usize = *(uint8_t *) data++;
4250 printf ("%*s[%4" PRIuMAX "] %s [%6" PRIxMAX "] ",
4251 indent, "", (uintmax_t) offset, op_name, uleb);
4252 print_block (usize, data);
4254 CONSUME (data - start);
4255 offset += 1 + (data - start);
4258 case DW_OP_GNU_regval_type:
4259 /* uleb128 register number, uleb128 CU relative
4260 DW_TAG_base_type DIE offset. */
4263 get_uleb128 (uleb, data, data + len);
4265 get_uleb128 (uleb2, data, data + len);
4266 if (! print_unresolved_addresses && cu != NULL)
4268 printf ("%*s[%4" PRIuMAX "] %s %" PRIu64 " [%6" PRIx64 "]\n",
4269 indent, "", (uintmax_t) offset, op_name, uleb, uleb2);
4270 CONSUME (data - start);
4271 offset += 1 + (data - start);
4274 case DW_OP_GNU_deref_type:
4275 /* 1-byte unsigned size of value, uleb128 CU relative
4276 DW_TAG_base_type DIE offset. */
4279 usize = *(uint8_t *) data++;
4281 get_uleb128 (uleb, data, data + len);
4282 if (! print_unresolved_addresses && cu != NULL)
4284 printf ("%*s[%4" PRIuMAX "] %s %" PRIu8 " [%6" PRIxMAX "]\n",
4285 indent, "", (uintmax_t) offset,
4286 op_name, usize, uleb);
4287 CONSUME (data - start);
4288 offset += 1 + (data - start);
4291 case DW_OP_GNU_convert:
4292 case DW_OP_GNU_reinterpret:
4293 /* uleb128 CU relative offset to DW_TAG_base_type, or zero
4294 for conversion to untyped. */
4297 get_uleb128 (uleb, data, data + len);
4298 if (uleb != 0 && ! print_unresolved_addresses && cu != NULL)
4300 printf ("%*s[%4" PRIuMAX "] %s [%6" PRIxMAX "]\n",
4301 indent, "", (uintmax_t) offset, op_name, uleb);
4302 CONSUME (data - start);
4303 offset += 1 + (data - start);
4306 case DW_OP_GNU_parameter_ref:
4307 /* 4 byte CU relative reference to the abstract optimized away
4308 DW_TAG_formal_parameter. */
4310 uintmax_t param_off = (uintmax_t) read_4ubyte_unaligned (dbg, data);
4311 if (! print_unresolved_addresses && cu != NULL)
4312 param_off += cu->start;
4313 printf ("%*s[%4" PRIuMAX "] %s [%6" PRIxMAX "]\n",
4314 indent, "", (uintmax_t) offset, op_name, param_off);
4322 printf ("%*s[%4" PRIuMAX "] %s\n",
4323 indent, "", (uintmax_t) offset, op_name);
4328 indent = indentrest;
4332 printf (gettext ("%*s[%4" PRIuMAX "] %s <TRUNCATED>\n"),
4333 indent, "", (uintmax_t) offset, op_name);
4341 Dwarf_Off offset:(64 - 3);
4345 struct Dwarf_CU *cu;
4348 #define listptr_offset_size(p) ((p)->dwarf64 ? 8 : 4)
4349 #define listptr_address_size(p) ((p)->addr64 ? 8 : 4)
4352 listptr_base (struct listptr *p)
4355 Dwarf_Die cu = CUDIE (p->cu);
4356 /* Find the base address of the compilation unit. It will normally
4357 be specified by DW_AT_low_pc. In DWARF-3 draft 4, the base
4358 address could be overridden by DW_AT_entry_pc. It's been
4359 removed, but GCC emits DW_AT_entry_pc and not DW_AT_lowpc for
4360 compilation units with discontinuous ranges. */
4361 if (unlikely (dwarf_lowpc (&cu, &base) != 0))
4363 Dwarf_Attribute attr_mem;
4364 if (dwarf_formaddr (dwarf_attr (&cu, DW_AT_entry_pc, &attr_mem),
4372 compare_listptr (const void *a, const void *b, void *arg)
4374 const char *name = arg;
4375 struct listptr *p1 = (void *) a;
4376 struct listptr *p2 = (void *) b;
4378 if (p1->offset < p2->offset)
4380 if (p1->offset > p2->offset)
4383 if (!p1->warned && !p2->warned)
4385 if (p1->addr64 != p2->addr64)
4387 p1->warned = p2->warned = true;
4389 gettext ("%s %#" PRIx64 " used with different address sizes"),
4390 name, (uint64_t) p1->offset);
4392 if (p1->dwarf64 != p2->dwarf64)
4394 p1->warned = p2->warned = true;
4396 gettext ("%s %#" PRIx64 " used with different offset sizes"),
4397 name, (uint64_t) p1->offset);
4399 if (listptr_base (p1) != listptr_base (p2))
4401 p1->warned = p2->warned = true;
4403 gettext ("%s %#" PRIx64 " used with different base addresses"),
4404 name, (uint64_t) p1->offset);
4411 struct listptr_table
4415 struct listptr *table;
4418 static struct listptr_table known_loclistptr;
4419 static struct listptr_table known_rangelistptr;
4422 reset_listptr (struct listptr_table *table)
4424 free (table->table);
4425 table->table = NULL;
4426 table->n = table->alloc = 0;
4429 /* Returns false if offset doesn't fit. See struct listptr. */
4431 notice_listptr (enum section_e section, struct listptr_table *table,
4432 uint_fast8_t address_size, uint_fast8_t offset_size,
4433 struct Dwarf_CU *cu, Dwarf_Off offset)
4435 if (print_debug_sections & section)
4437 if (table->n == table->alloc)
4439 if (table->alloc == 0)
4443 table->table = xrealloc (table->table,
4444 table->alloc * sizeof table->table[0]);
4447 struct listptr *p = &table->table[table->n++];
4449 *p = (struct listptr)
4451 .addr64 = address_size == 8,
4452 .dwarf64 = offset_size == 8,
4457 if (p->offset != offset)
4467 sort_listptr (struct listptr_table *table, const char *name)
4470 qsort_r (table->table, table->n, sizeof table->table[0],
4471 &compare_listptr, (void *) name);
4475 skip_listptr_hole (struct listptr_table *table, size_t *idxp,
4476 uint_fast8_t *address_sizep, uint_fast8_t *offset_sizep,
4477 Dwarf_Addr *base, struct Dwarf_CU **cu, ptrdiff_t offset,
4478 unsigned char **readp, unsigned char *endp)
4483 while (*idxp < table->n && table->table[*idxp].offset < (Dwarf_Off) offset)
4486 struct listptr *p = &table->table[*idxp];
4488 if (*idxp == table->n
4489 || p->offset >= (Dwarf_Off) (endp - *readp + offset))
4492 printf (gettext (" [%6tx] <UNUSED GARBAGE IN REST OF SECTION>\n"),
4497 if (p->offset != (Dwarf_Off) offset)
4499 *readp += p->offset - offset;
4500 printf (gettext (" [%6tx] <UNUSED GARBAGE> ... %" PRIu64 " bytes ...\n"),
4501 offset, (Dwarf_Off) p->offset - offset);
4505 if (address_sizep != NULL)
4506 *address_sizep = listptr_address_size (p);
4507 if (offset_sizep != NULL)
4508 *offset_sizep = listptr_offset_size (p);
4510 *base = listptr_base (p);
4519 print_debug_abbrev_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
4520 Ebl *ebl, GElf_Ehdr *ehdr,
4521 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
4523 const size_t sh_size = (dbg->sectiondata[IDX_debug_abbrev] ?
4524 dbg->sectiondata[IDX_debug_abbrev]->d_size : 0);
4526 printf (gettext ("\nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"
4528 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
4529 (uint64_t) shdr->sh_offset);
4531 Dwarf_Off offset = 0;
4532 while (offset < sh_size)
4534 printf (gettext ("\nAbbreviation section at offset %" PRIu64 ":\n"),
4540 Dwarf_Abbrev abbrev;
4542 int res = dwarf_offabbrev (dbg, offset, &length, &abbrev);
4545 if (unlikely (res < 0))
4548 *** error while reading abbreviation: %s\n"),
4553 /* This is the NUL byte at the end of the section. */
4558 /* We know these calls can never fail. */
4559 unsigned int code = dwarf_getabbrevcode (&abbrev);
4560 unsigned int tag = dwarf_getabbrevtag (&abbrev);
4561 int has_children = dwarf_abbrevhaschildren (&abbrev);
4563 printf (gettext (" [%5u] offset: %" PRId64
4564 ", children: %s, tag: %s\n"),
4565 code, (int64_t) offset,
4566 has_children ? gettext ("yes") : gettext ("no"),
4567 dwarf_tag_name (tag));
4573 while (dwarf_getabbrevattr (&abbrev, cnt,
4574 &name, &form, &enoffset) == 0)
4576 printf (" attr: %s, form: %s, offset: %#" PRIx64 "\n",
4577 dwarf_attr_name (name), dwarf_form_name (form),
4578 (uint64_t) enoffset);
4589 /* Print content of DWARF .debug_aranges section. We fortunately do
4590 not have to know a bit about the structure of the section, libdwarf
4591 takes care of it. */
4593 print_decoded_aranges_section (Ebl *ebl, GElf_Ehdr *ehdr, Elf_Scn *scn,
4594 GElf_Shdr *shdr, Dwarf *dbg)
4596 Dwarf_Aranges *aranges;
4598 if (unlikely (dwarf_getaranges (dbg, &aranges, &cnt) != 0))
4600 error (0, 0, gettext ("cannot get .debug_aranges content: %s"),
4605 GElf_Shdr glink_mem;
4607 glink = gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link), &glink_mem);
4610 error (0, 0, gettext ("invalid sh_link value in section %Zu"),
4615 printf (ngettext ("\
4616 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 " contains %zu entry:\n",
4618 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 " contains %zu entries:\n",
4620 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
4621 (uint64_t) shdr->sh_offset, cnt);
4623 /* Compute floor(log16(cnt)). */
4632 for (size_t n = 0; n < cnt; ++n)
4634 Dwarf_Arange *runp = dwarf_onearange (aranges, n);
4635 if (unlikely (runp == NULL))
4637 printf ("cannot get arange %zu: %s\n", n, dwarf_errmsg (-1));
4645 if (unlikely (dwarf_getarangeinfo (runp, &start, &length, &offset) != 0))
4646 printf (gettext (" [%*zu] ???\n"), digits, n);
4648 printf (gettext (" [%*zu] start: %0#*" PRIx64
4649 ", length: %5" PRIu64 ", CU DIE offset: %6"
4651 digits, n, ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 10 : 18,
4652 (uint64_t) start, (uint64_t) length, (int64_t) offset);
4657 /* Print content of DWARF .debug_aranges section. */
4659 print_debug_aranges_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
4660 Ebl *ebl, GElf_Ehdr *ehdr, Elf_Scn *scn,
4661 GElf_Shdr *shdr, Dwarf *dbg)
4665 print_decoded_aranges_section (ebl, ehdr, scn, shdr, dbg);
4669 Elf_Data *data = dbg->sectiondata[IDX_debug_aranges];
4671 if (unlikely (data == NULL))
4673 error (0, 0, gettext ("cannot get .debug_aranges content: %s"),
4679 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
4680 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
4681 (uint64_t) shdr->sh_offset);
4683 const unsigned char *readp = data->d_buf;
4684 const unsigned char *readendp = readp + data->d_size;
4686 while (readp < readendp)
4688 const unsigned char *hdrstart = readp;
4689 size_t start_offset = hdrstart - (const unsigned char *) data->d_buf;
4691 printf (gettext ("\nTable at offset %Zu:\n"), start_offset);
4692 if (readp + 4 > readendp)
4695 error (0, 0, gettext ("invalid data in section [%zu] '%s'"),
4696 elf_ndxscn (scn), section_name (ebl, ehdr, shdr));
4700 Dwarf_Word length = read_4ubyte_unaligned_inc (dbg, readp);
4701 unsigned int length_bytes = 4;
4702 if (length == DWARF3_LENGTH_64_BIT)
4704 if (readp + 8 > readendp)
4706 length = read_8ubyte_unaligned_inc (dbg, readp);
4710 const unsigned char *nexthdr = readp + length;
4711 printf (gettext ("\n Length: %6" PRIu64 "\n"),
4714 if (unlikely (length > (size_t) (readendp - readp)))
4720 if (readp + 2 > readendp)
4722 uint_fast16_t version = read_2ubyte_unaligned_inc (dbg, readp);
4723 printf (gettext (" DWARF version: %6" PRIuFAST16 "\n"),
4727 error (0, 0, gettext ("unsupported aranges version"));
4732 if (readp + length_bytes > readendp)
4734 if (length_bytes == 8)
4735 offset = read_8ubyte_unaligned_inc (dbg, readp);
4737 offset = read_4ubyte_unaligned_inc (dbg, readp);
4738 printf (gettext (" CU offset: %6" PRIx64 "\n"),
4741 if (readp + 1 > readendp)
4743 unsigned int address_size = *readp++;
4744 printf (gettext (" Address size: %6" PRIu64 "\n"),
4745 (uint64_t) address_size);
4746 if (address_size != 4 && address_size != 8)
4748 error (0, 0, gettext ("unsupported address size"));
4752 unsigned int segment_size = *readp++;
4753 printf (gettext (" Segment size: %6" PRIu64 "\n\n"),
4754 (uint64_t) segment_size);
4755 if (segment_size != 0 && segment_size != 4 && segment_size != 8)
4757 error (0, 0, gettext ("unsupported segment size"));
4761 /* Round the address to the next multiple of 2*address_size. */
4762 readp += ((2 * address_size - ((readp - hdrstart) % (2 * address_size)))
4763 % (2 * address_size));
4765 while (readp < nexthdr)
4767 Dwarf_Word range_address;
4768 Dwarf_Word range_length;
4769 Dwarf_Word segment = 0;
4770 if (readp + 2 * address_size + segment_size > readendp)
4772 if (address_size == 4)
4774 range_address = read_4ubyte_unaligned_inc (dbg, readp);
4775 range_length = read_4ubyte_unaligned_inc (dbg, readp);
4779 range_address = read_8ubyte_unaligned_inc (dbg, readp);
4780 range_length = read_8ubyte_unaligned_inc (dbg, readp);
4783 if (segment_size == 4)
4784 segment = read_4ubyte_unaligned_inc (dbg, readp);
4785 else if (segment_size == 8)
4786 segment = read_8ubyte_unaligned_inc (dbg, readp);
4788 if (range_address == 0 && range_length == 0 && segment == 0)
4791 char *b = format_dwarf_addr (dwflmod, address_size, range_address,
4793 char *e = format_dwarf_addr (dwflmod, address_size,
4794 range_address + range_length - 1,
4796 if (segment_size != 0)
4797 printf (gettext (" %s..%s (%" PRIx64 ")\n"), b, e,
4798 (uint64_t) segment);
4800 printf (gettext (" %s..%s\n"), b, e);
4806 if (readp != nexthdr)
4808 size_t padding = nexthdr - readp;
4809 printf (gettext (" %Zu padding bytes\n"), padding);
4816 /* Print content of DWARF .debug_ranges section. */
4818 print_debug_ranges_section (Dwfl_Module *dwflmod,
4819 Ebl *ebl, GElf_Ehdr *ehdr,
4820 Elf_Scn *scn, GElf_Shdr *shdr,
4823 Elf_Data *data = dbg->sectiondata[IDX_debug_ranges];
4825 if (unlikely (data == NULL))
4827 error (0, 0, gettext ("cannot get .debug_ranges content: %s"),
4833 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
4834 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
4835 (uint64_t) shdr->sh_offset);
4837 sort_listptr (&known_rangelistptr, "rangelistptr");
4838 size_t listptr_idx = 0;
4840 uint_fast8_t address_size = ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8;
4843 Dwarf_Addr base = 0;
4844 unsigned char *const endp = (unsigned char *) data->d_buf + data->d_size;
4845 unsigned char *readp = data->d_buf;
4846 while (readp < endp)
4848 ptrdiff_t offset = readp - (unsigned char *) data->d_buf;
4850 if (first && skip_listptr_hole (&known_rangelistptr, &listptr_idx,
4851 &address_size, NULL, &base, NULL,
4852 offset, &readp, endp))
4855 if (unlikely (data->d_size - offset < (size_t) address_size * 2))
4857 printf (gettext (" [%6tx] <INVALID DATA>\n"), offset);
4863 if (address_size == 8)
4865 begin = read_8ubyte_unaligned_inc (dbg, readp);
4866 end = read_8ubyte_unaligned_inc (dbg, readp);
4870 begin = read_4ubyte_unaligned_inc (dbg, readp);
4871 end = read_4ubyte_unaligned_inc (dbg, readp);
4872 if (begin == (Dwarf_Addr) (uint32_t) -1)
4873 begin = (Dwarf_Addr) -1l;
4876 if (begin == (Dwarf_Addr) -1l) /* Base address entry. */
4878 char *b = format_dwarf_addr (dwflmod, address_size, end, end);
4879 printf (gettext (" [%6tx] base address %s\n"), offset, b);
4883 else if (begin == 0 && end == 0) /* End of list entry. */
4886 printf (gettext (" [%6tx] empty list\n"), offset);
4891 char *b = format_dwarf_addr (dwflmod, address_size, base + begin,
4893 char *e = format_dwarf_addr (dwflmod, address_size, base + end,
4895 /* We have an address range entry. */
4896 if (first) /* First address range entry in a list. */
4897 printf (gettext (" [%6tx] %s..%s\n"), offset, b, e);
4899 printf (gettext (" %s..%s\n"), b, e);
4908 #define REGNAMESZ 16
4910 register_info (Ebl *ebl, unsigned int regno, const Ebl_Register_Location *loc,
4911 char name[REGNAMESZ], int *bits, int *type)
4916 ssize_t n = ebl_register_info (ebl, regno, name, REGNAMESZ, &pfx, &set,
4917 bits ?: &ignore, type ?: &ignore);
4921 snprintf (name, REGNAMESZ, "reg%u", loc->regno);
4923 snprintf (name, REGNAMESZ, "??? 0x%x", regno);
4925 *bits = loc != NULL ? loc->bits : 0;
4927 *type = DW_ATE_unsigned;
4928 set = "??? unrecognized";
4932 if (bits != NULL && *bits <= 0)
4933 *bits = loc != NULL ? loc->bits : 0;
4934 if (type != NULL && *type == DW_ATE_void)
4935 *type = DW_ATE_unsigned;
4942 print_cfa_program (const unsigned char *readp, const unsigned char *const endp,
4943 Dwarf_Word vma_base, unsigned int code_align,
4945 unsigned int version, unsigned int ptr_size,
4946 Dwfl_Module *dwflmod, Ebl *ebl, Dwarf *dbg)
4948 char regnamebuf[REGNAMESZ];
4949 const char *regname (unsigned int regno)
4951 register_info (ebl, regno, NULL, regnamebuf, NULL, NULL);
4955 puts ("\n Program:");
4956 Dwarf_Word pc = vma_base;
4957 while (readp < endp)
4959 unsigned int opcode = *readp++;
4961 if (opcode < DW_CFA_advance_loc)
4962 /* Extended opcode. */
4973 case DW_CFA_set_loc:
4974 get_uleb128 (op1, readp, endp);
4976 printf (" set_loc %" PRIu64 "\n", op1 * code_align);
4978 case DW_CFA_advance_loc1:
4979 printf (" advance_loc1 %u to %#" PRIx64 "\n",
4980 *readp, pc += *readp * code_align);
4983 case DW_CFA_advance_loc2:
4984 if ((uint64_t) (endp - readp) < 2)
4986 op1 = read_2ubyte_unaligned_inc (dbg, readp);
4987 printf (" advance_loc2 %" PRIu64 " to %#" PRIx64 "\n",
4988 op1, pc += op1 * code_align);
4990 case DW_CFA_advance_loc4:
4991 if ((uint64_t) (endp - readp) < 4)
4993 op1 = read_4ubyte_unaligned_inc (dbg, readp);
4994 printf (" advance_loc4 %" PRIu64 " to %#" PRIx64 "\n",
4995 op1, pc += op1 * code_align);
4997 case DW_CFA_offset_extended:
4998 get_uleb128 (op1, readp, endp);
4999 if ((uint64_t) (endp - readp) < 1)
5001 get_uleb128 (op2, readp, endp);
5002 printf (" offset_extended r%" PRIu64 " (%s) at cfa%+" PRId64
5004 op1, regname (op1), op2 * data_align);
5006 case DW_CFA_restore_extended:
5007 get_uleb128 (op1, readp, endp);
5008 printf (" restore_extended r%" PRIu64 " (%s)\n",
5009 op1, regname (op1));
5011 case DW_CFA_undefined:
5012 get_uleb128 (op1, readp, endp);
5013 printf (" undefined r%" PRIu64 " (%s)\n", op1, regname (op1));
5015 case DW_CFA_same_value:
5016 get_uleb128 (op1, readp, endp);
5017 printf (" same_value r%" PRIu64 " (%s)\n", op1, regname (op1));
5019 case DW_CFA_register:
5020 get_uleb128 (op1, readp, endp);
5021 if ((uint64_t) (endp - readp) < 1)
5023 get_uleb128 (op2, readp, endp);
5024 printf (" register r%" PRIu64 " (%s) in r%" PRIu64 " (%s)\n",
5025 op1, regname (op1), op2, regname (op2));
5027 case DW_CFA_remember_state:
5028 puts (" remember_state");
5030 case DW_CFA_restore_state:
5031 puts (" restore_state");
5033 case DW_CFA_def_cfa:
5034 get_uleb128 (op1, readp, endp);
5035 if ((uint64_t) (endp - readp) < 1)
5037 get_uleb128 (op2, readp, endp);
5038 printf (" def_cfa r%" PRIu64 " (%s) at offset %" PRIu64 "\n",
5039 op1, regname (op1), op2);
5041 case DW_CFA_def_cfa_register:
5042 get_uleb128 (op1, readp, endp);
5043 printf (" def_cfa_register r%" PRIu64 " (%s)\n",
5044 op1, regname (op1));
5046 case DW_CFA_def_cfa_offset:
5047 get_uleb128 (op1, readp, endp);
5048 printf (" def_cfa_offset %" PRIu64 "\n", op1);
5050 case DW_CFA_def_cfa_expression:
5051 get_uleb128 (op1, readp, endp); /* Length of DW_FORM_block. */
5052 printf (" def_cfa_expression %" PRIu64 "\n", op1);
5053 if ((uint64_t) (endp - readp) < op1)
5056 fputs (gettext (" <INVALID DATA>\n"), stdout);
5059 print_ops (dwflmod, dbg, 10, 10, version, ptr_size, 0, NULL,
5063 case DW_CFA_expression:
5064 get_uleb128 (op1, readp, endp);
5065 if ((uint64_t) (endp - readp) < 1)
5067 get_uleb128 (op2, readp, endp); /* Length of DW_FORM_block. */
5068 printf (" expression r%" PRIu64 " (%s) \n",
5069 op1, regname (op1));
5070 if ((uint64_t) (endp - readp) < op2)
5072 print_ops (dwflmod, dbg, 10, 10, version, ptr_size, 0, NULL,
5076 case DW_CFA_offset_extended_sf:
5077 get_uleb128 (op1, readp, endp);
5078 if ((uint64_t) (endp - readp) < 1)
5080 get_sleb128 (sop2, readp, endp);
5081 printf (" offset_extended_sf r%" PRIu64 " (%s) at cfa%+"
5083 op1, regname (op1), sop2 * data_align);
5085 case DW_CFA_def_cfa_sf:
5086 get_uleb128 (op1, readp, endp);
5087 if ((uint64_t) (endp - readp) < 1)
5089 get_sleb128 (sop2, readp, endp);
5090 printf (" def_cfa_sf r%" PRIu64 " (%s) at offset %" PRId64 "\n",
5091 op1, regname (op1), sop2 * data_align);
5093 case DW_CFA_def_cfa_offset_sf:
5094 get_sleb128 (sop1, readp, endp);
5095 printf (" def_cfa_offset_sf %" PRId64 "\n", sop1 * data_align);
5097 case DW_CFA_val_offset:
5098 // XXX overflow check
5099 get_uleb128 (op1, readp, endp);
5100 if ((uint64_t) (endp - readp) < 1)
5102 get_uleb128 (op2, readp, endp);
5103 printf (" val_offset %" PRIu64 " at offset %" PRIu64 "\n",
5104 op1, op2 * data_align);
5106 case DW_CFA_val_offset_sf:
5107 // XXX overflow check
5108 get_uleb128 (op1, readp, endp);
5109 if ((uint64_t) (endp - readp) < 1)
5111 get_sleb128 (sop2, readp, endp);
5112 printf (" val_offset_sf %" PRIu64 " at offset %" PRId64 "\n",
5113 op1, sop2 * data_align);
5115 case DW_CFA_val_expression:
5116 get_uleb128 (op1, readp, endp);
5117 if ((uint64_t) (endp - readp) < 1)
5119 get_uleb128 (op2, readp, endp); /* Length of DW_FORM_block. */
5120 printf (" val_expression r%" PRIu64 " (%s)\n",
5121 op1, regname (op1));
5122 if ((uint64_t) (endp - readp) < op2)
5124 print_ops (dwflmod, dbg, 10, 10, version, ptr_size, 0,
5128 case DW_CFA_MIPS_advance_loc8:
5129 if ((uint64_t) (endp - readp) < 8)
5131 op1 = read_8ubyte_unaligned_inc (dbg, readp);
5132 printf (" MIPS_advance_loc8 %" PRIu64 " to %#" PRIx64 "\n",
5133 op1, pc += op1 * code_align);
5135 case DW_CFA_GNU_window_save:
5136 puts (" GNU_window_save");
5138 case DW_CFA_GNU_args_size:
5139 get_uleb128 (op1, readp, endp);
5140 printf (" args_size %" PRIu64 "\n", op1);
5143 printf (" ??? (%u)\n", opcode);
5146 else if (opcode < DW_CFA_offset)
5147 printf (" advance_loc %u to %#" PRIx64 "\n",
5148 opcode & 0x3f, pc += (opcode & 0x3f) * code_align);
5149 else if (opcode < DW_CFA_restore)
5152 get_uleb128 (offset, readp, endp);
5153 printf (" offset r%u (%s) at cfa%+" PRId64 "\n",
5154 opcode & 0x3f, regname (opcode & 0x3f), offset * data_align);
5157 printf (" restore r%u (%s)\n",
5158 opcode & 0x3f, regname (opcode & 0x3f));
5164 encoded_ptr_size (int encoding, unsigned int ptr_size)
5166 switch (encoding & 7)
5168 case DW_EH_PE_udata4:
5170 case DW_EH_PE_udata8:
5176 fprintf (stderr, "Unsupported pointer encoding: %#x, "
5177 "assuming pointer size of %d.\n", encoding, ptr_size);
5183 print_encoding (unsigned int val)
5187 case DW_EH_PE_absptr:
5188 fputs ("absptr", stdout);
5190 case DW_EH_PE_uleb128:
5191 fputs ("uleb128", stdout);
5193 case DW_EH_PE_udata2:
5194 fputs ("udata2", stdout);
5196 case DW_EH_PE_udata4:
5197 fputs ("udata4", stdout);
5199 case DW_EH_PE_udata8:
5200 fputs ("udata8", stdout);
5202 case DW_EH_PE_sleb128:
5203 fputs ("sleb128", stdout);
5205 case DW_EH_PE_sdata2:
5206 fputs ("sdata2", stdout);
5208 case DW_EH_PE_sdata4:
5209 fputs ("sdata4", stdout);
5211 case DW_EH_PE_sdata8:
5212 fputs ("sdata8", stdout);
5215 /* We did not use any of the bits after all. */
5224 print_relinfo (unsigned int val)
5228 case DW_EH_PE_pcrel:
5229 fputs ("pcrel", stdout);
5231 case DW_EH_PE_textrel:
5232 fputs ("textrel", stdout);
5234 case DW_EH_PE_datarel:
5235 fputs ("datarel", stdout);
5237 case DW_EH_PE_funcrel:
5238 fputs ("funcrel", stdout);
5240 case DW_EH_PE_aligned:
5241 fputs ("aligned", stdout);
5252 print_encoding_base (const char *pfx, unsigned int fde_encoding)
5254 printf ("(%s", pfx);
5256 if (fde_encoding == DW_EH_PE_omit)
5260 unsigned int w = fde_encoding;
5262 w = print_encoding (w);
5266 if (w != fde_encoding)
5267 fputc_unlocked (' ', stdout);
5269 w = print_relinfo (w);
5273 printf ("%s%x", w != fde_encoding ? " " : "", w);
5280 static const unsigned char *
5281 read_encoded (unsigned int encoding, const unsigned char *readp,
5282 const unsigned char *const endp, uint64_t *res, Dwarf *dbg)
5284 if ((encoding & 0xf) == DW_EH_PE_absptr)
5285 encoding = gelf_getclass (dbg->elf) == ELFCLASS32
5286 ? DW_EH_PE_udata4 : DW_EH_PE_udata8;
5288 switch (encoding & 0xf)
5290 case DW_EH_PE_uleb128:
5291 get_uleb128 (*res, readp, endp);
5293 case DW_EH_PE_sleb128:
5294 get_sleb128 (*res, readp, endp);
5296 case DW_EH_PE_udata2:
5297 if (readp + 2 > endp)
5299 *res = read_2ubyte_unaligned_inc (dbg, readp);
5301 case DW_EH_PE_udata4:
5302 if (readp + 4 > endp)
5304 *res = read_4ubyte_unaligned_inc (dbg, readp);
5306 case DW_EH_PE_udata8:
5307 if (readp + 8 > endp)
5309 *res = read_8ubyte_unaligned_inc (dbg, readp);
5311 case DW_EH_PE_sdata2:
5312 if (readp + 2 > endp)
5314 *res = read_2sbyte_unaligned_inc (dbg, readp);
5316 case DW_EH_PE_sdata4:
5317 if (readp + 4 > endp)
5319 *res = read_4sbyte_unaligned_inc (dbg, readp);
5321 case DW_EH_PE_sdata8:
5322 if (readp + 8 > endp)
5324 *res = read_8sbyte_unaligned_inc (dbg, readp);
5329 gettext ("invalid encoding"));
5337 print_debug_frame_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
5338 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
5341 /* We know this call will succeed since it did in the caller. */
5342 (void) elf_getshdrstrndx (ebl->elf, &shstrndx);
5343 const char *scnname = elf_strptr (ebl->elf, shstrndx, shdr->sh_name);
5345 /* Needed if we find PC-relative addresses. */
5347 if (dwfl_module_getelf (dwflmod, &bias) == NULL)
5349 error (0, 0, gettext ("cannot get ELF: %s"), dwfl_errmsg (-1));
5353 bool is_eh_frame = strcmp (scnname, ".eh_frame") == 0;
5354 Elf_Data *data = (is_eh_frame
5355 ? elf_rawdata (scn, NULL)
5356 : dbg->sectiondata[IDX_debug_frame]);
5358 if (unlikely (data == NULL))
5360 error (0, 0, gettext ("cannot get %s content: %s"),
5361 scnname, elf_errmsg (-1));
5367 \nCall frame information section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
5368 elf_ndxscn (scn), scnname, (uint64_t) shdr->sh_offset);
5371 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
5372 elf_ndxscn (scn), scnname, (uint64_t) shdr->sh_offset);
5376 ptrdiff_t cie_offset;
5377 const char *augmentation;
5378 unsigned int code_alignment_factor;
5379 unsigned int data_alignment_factor;
5380 uint8_t address_size;
5381 uint8_t fde_encoding;
5382 uint8_t lsda_encoding;
5383 struct cieinfo *next;
5386 const unsigned char *readp = data->d_buf;
5387 const unsigned char *const dataend = ((unsigned char *) data->d_buf
5389 while (readp < dataend)
5391 if (unlikely (readp + 4 > dataend))
5394 error (0, 0, gettext ("invalid data in section [%zu] '%s'"),
5395 elf_ndxscn (scn), scnname);
5399 /* At the beginning there must be a CIE. There can be multiple,
5400 hence we test tis in a loop. */
5401 ptrdiff_t offset = readp - (unsigned char *) data->d_buf;
5403 Dwarf_Word unit_length = read_4ubyte_unaligned_inc (dbg, readp);
5404 unsigned int length = 4;
5405 if (unlikely (unit_length == 0xffffffff))
5407 if (unlikely (readp + 8 > dataend))
5410 unit_length = read_8ubyte_unaligned_inc (dbg, readp);
5414 if (unlikely (unit_length == 0))
5416 printf (gettext ("\n [%6tx] Zero terminator\n"), offset);
5420 Dwarf_Word maxsize = dataend - readp;
5421 if (unlikely (unit_length > maxsize))
5424 unsigned int ptr_size = ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8;
5426 ptrdiff_t start = readp - (unsigned char *) data->d_buf;
5427 const unsigned char *const cieend = readp + unit_length;
5428 if (unlikely (cieend > dataend || readp + 8 > dataend))
5434 cie_id = read_4ubyte_unaligned_inc (dbg, readp);
5435 if (!is_eh_frame && cie_id == DW_CIE_ID_32)
5436 cie_id = DW_CIE_ID_64;
5439 cie_id = read_8ubyte_unaligned_inc (dbg, readp);
5441 uint_fast8_t version = 2;
5442 unsigned int code_alignment_factor;
5443 int data_alignment_factor;
5444 unsigned int fde_encoding = 0;
5445 unsigned int lsda_encoding = 0;
5446 Dwarf_Word initial_location = 0;
5447 Dwarf_Word vma_base = 0;
5449 if (cie_id == (is_eh_frame ? 0 : DW_CIE_ID_64))
5452 const char *const augmentation = (const char *) readp;
5453 readp = memchr (readp, '\0', cieend - readp);
5454 if (unlikely (readp == NULL))
5458 uint_fast8_t segment_size = 0;
5461 if (cieend - readp < 5)
5463 ptr_size = *readp++;
5464 segment_size = *readp++;
5467 if (cieend - readp < 1)
5469 get_uleb128 (code_alignment_factor, readp, cieend);
5470 if (cieend - readp < 1)
5472 get_sleb128 (data_alignment_factor, readp, cieend);
5474 /* In some variant for unwind data there is another field. */
5475 if (strcmp (augmentation, "eh") == 0)
5476 readp += ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8;
5478 unsigned int return_address_register;
5479 if (cieend - readp < 1)
5481 if (unlikely (version == 1))
5482 return_address_register = *readp++;
5484 get_uleb128 (return_address_register, readp, cieend);
5486 printf ("\n [%6tx] CIE length=%" PRIu64 "\n"
5487 " CIE_id: %" PRIu64 "\n"
5489 " augmentation: \"%s\"\n",
5490 offset, (uint64_t) unit_length, (uint64_t) cie_id,
5491 version, augmentation);
5493 printf (" address_size: %u\n"
5494 " segment_size: %u\n",
5495 ptr_size, segment_size);
5496 printf (" code_alignment_factor: %u\n"
5497 " data_alignment_factor: %d\n"
5498 " return_address_register: %u\n",
5499 code_alignment_factor,
5500 data_alignment_factor, return_address_register);
5502 if (augmentation[0] == 'z')
5504 unsigned int augmentationlen;
5505 get_uleb128 (augmentationlen, readp, cieend);
5507 if (augmentationlen > (size_t) (cieend - readp))
5509 error (0, 0, gettext ("invalid augmentation length"));
5514 const char *hdr = "Augmentation data:";
5515 const char *cp = augmentation + 1;
5516 while (*cp != '\0' && cp < augmentation + augmentationlen + 1)
5518 printf (" %-26s%#x ", hdr, *readp);
5523 fde_encoding = *readp++;
5524 print_encoding_base (gettext ("FDE address encoding: "),
5527 else if (*cp == 'L')
5529 lsda_encoding = *readp++;
5530 print_encoding_base (gettext ("LSDA pointer encoding: "),
5533 else if (*cp == 'P')
5535 /* Personality. This field usually has a relocation
5536 attached pointing to __gcc_personality_v0. */
5537 const unsigned char *startp = readp;
5538 unsigned int encoding = *readp++;
5540 readp = read_encoded (encoding, readp,
5541 readp - 1 + augmentationlen,
5544 while (++startp < readp)
5545 printf ("%#x ", *startp);
5548 print_encoding (encoding);
5550 switch (encoding & 0xf)
5552 case DW_EH_PE_sleb128:
5553 case DW_EH_PE_sdata2:
5554 case DW_EH_PE_sdata4:
5555 printf ("%" PRId64 ")\n", val);
5558 printf ("%#" PRIx64 ")\n", val);
5563 printf ("(%x)\n", *readp++);
5569 if (likely (ptr_size == 4 || ptr_size == 8))
5571 struct cieinfo *newp = alloca (sizeof (*newp));
5572 newp->cie_offset = offset;
5573 newp->augmentation = augmentation;
5574 newp->fde_encoding = fde_encoding;
5575 newp->lsda_encoding = lsda_encoding;
5576 newp->address_size = ptr_size;
5577 newp->code_alignment_factor = code_alignment_factor;
5578 newp->data_alignment_factor = data_alignment_factor;
5585 struct cieinfo *cie = cies;
5588 ? start - (ptrdiff_t) cie_id == cie->cie_offset
5589 : (ptrdiff_t) cie_id == cie->cie_offset)
5593 if (unlikely (cie == NULL))
5595 puts ("invalid CIE reference in FDE");
5599 /* Initialize from CIE data. */
5600 fde_encoding = cie->fde_encoding;
5601 lsda_encoding = cie->lsda_encoding;
5602 ptr_size = encoded_ptr_size (fde_encoding, cie->address_size);
5603 code_alignment_factor = cie->code_alignment_factor;
5604 data_alignment_factor = cie->data_alignment_factor;
5606 const unsigned char *base = readp;
5607 // XXX There are sometimes relocations for this value
5608 initial_location = read_addr_unaligned_inc (ptr_size, dbg, readp);
5609 Dwarf_Word address_range
5610 = read_addr_unaligned_inc (ptr_size, dbg, readp);
5612 /* pcrel for an FDE address is relative to the runtime
5613 address of the start_address field itself. Sign extend
5614 if necessary to make sure the calculation is done on the
5615 full 64 bit address even when initial_location only holds
5616 the lower 32 bits. */
5617 Dwarf_Addr pc_start = initial_location;
5619 pc_start = (uint64_t) (int32_t) pc_start;
5620 if ((fde_encoding & 0x70) == DW_EH_PE_pcrel)
5621 pc_start += ((uint64_t) shdr->sh_addr
5622 + (base - (const unsigned char *) data->d_buf)
5625 char *a = format_dwarf_addr (dwflmod, cie->address_size,
5626 pc_start, initial_location);
5627 printf ("\n [%6tx] FDE length=%" PRIu64 " cie=[%6tx]\n"
5628 " CIE_pointer: %" PRIu64 "\n"
5629 " initial_location: %s",
5630 offset, (uint64_t) unit_length,
5631 cie->cie_offset, (uint64_t) cie_id, a);
5633 if ((fde_encoding & 0x70) == DW_EH_PE_pcrel)
5635 vma_base = (((uint64_t) shdr->sh_offset
5636 + (base - (const unsigned char *) data->d_buf)
5637 + (uint64_t) initial_location)
5639 ? UINT64_C (0xffffffff)
5640 : UINT64_C (0xffffffffffffffff)));
5641 printf (gettext (" (offset: %#" PRIx64 ")"),
5642 (uint64_t) vma_base);
5645 printf ("\n address_range: %#" PRIx64,
5646 (uint64_t) address_range);
5647 if ((fde_encoding & 0x70) == DW_EH_PE_pcrel)
5648 printf (gettext (" (end offset: %#" PRIx64 ")"),
5649 ((uint64_t) vma_base + (uint64_t) address_range)
5651 ? UINT64_C (0xffffffff)
5652 : UINT64_C (0xffffffffffffffff)));
5655 if (cie->augmentation[0] == 'z')
5657 unsigned int augmentationlen;
5658 if (cieend - readp < 1)
5660 get_uleb128 (augmentationlen, readp, cieend);
5662 if (augmentationlen > (size_t) (cieend - readp))
5664 error (0, 0, gettext ("invalid augmentation length"));
5669 if (augmentationlen > 0)
5671 const char *hdr = "Augmentation data:";
5672 const char *cp = cie->augmentation + 1;
5675 && cp < cie->augmentation + augmentationlen + 1)
5679 uint64_t lsda_pointer;
5680 const unsigned char *p
5681 = read_encoded (lsda_encoding, &readp[u],
5682 &readp[augmentationlen],
5683 &lsda_pointer, dbg);
5686 %-26sLSDA pointer: %#" PRIx64 "\n"),
5693 while (u < augmentationlen)
5695 printf (" %-26s%#x\n", hdr, readp[u++]);
5700 readp += augmentationlen;
5704 /* Handle the initialization instructions. */
5705 if (ptr_size != 4 && ptr_size !=8)
5706 printf ("invalid CIE pointer size (%u), must be 4 or 8.\n", ptr_size);
5708 print_cfa_program (readp, cieend, vma_base, code_alignment_factor,
5709 data_alignment_factor, version, ptr_size,
5718 Dwfl_Module *dwflmod;
5723 unsigned int version;
5724 unsigned int addrsize;
5725 unsigned int offset_size;
5726 struct Dwarf_CU *cu;
5731 attr_callback (Dwarf_Attribute *attrp, void *arg)
5733 struct attrcb_args *cbargs = (struct attrcb_args *) arg;
5734 const int level = cbargs->level;
5736 unsigned int attr = dwarf_whatattr (attrp);
5737 if (unlikely (attr == 0))
5739 if (!cbargs->silent)
5740 error (0, 0, gettext ("cannot get attribute code: %s"),
5742 return DWARF_CB_ABORT;
5745 unsigned int form = dwarf_whatform (attrp);
5746 if (unlikely (form == 0))
5748 if (!cbargs->silent)
5749 error (0, 0, gettext ("cannot get attribute form: %s"),
5751 return DWARF_CB_ABORT;
5757 if (!cbargs->silent)
5760 if (unlikely (dwarf_formaddr (attrp, &addr) != 0))
5763 if (!cbargs->silent)
5764 error (0, 0, gettext ("cannot get attribute value: %s"),
5766 return DWARF_CB_ABORT;
5768 char *a = format_dwarf_addr (cbargs->dwflmod, cbargs->addrsize,
5770 printf (" %*s%-20s (%s) %s\n",
5771 (int) (level * 2), "", dwarf_attr_name (attr),
5772 dwarf_form_name (form), a);
5777 case DW_FORM_indirect:
5779 case DW_FORM_string:
5780 case DW_FORM_GNU_strp_alt:
5783 const char *str = dwarf_formstring (attrp);
5784 if (unlikely (str == NULL))
5786 printf (" %*s%-20s (%s) \"%s\"\n",
5787 (int) (level * 2), "", dwarf_attr_name (attr),
5788 dwarf_form_name (form), str);
5791 case DW_FORM_ref_addr:
5792 case DW_FORM_ref_udata:
5797 case DW_FORM_GNU_ref_alt:
5801 if (unlikely (dwarf_formref_die (attrp, &ref) == NULL))
5804 printf (" %*s%-20s (%s) [%6" PRIxMAX "]\n",
5805 (int) (level * 2), "", dwarf_attr_name (attr),
5806 dwarf_form_name (form), (uintmax_t) dwarf_dieoffset (&ref));
5809 case DW_FORM_ref_sig8:
5812 printf (" %*s%-20s (%s) {%6" PRIx64 "}\n",
5813 (int) (level * 2), "", dwarf_attr_name (attr),
5814 dwarf_form_name (form),
5815 (uint64_t) read_8ubyte_unaligned (attrp->cu->dbg, attrp->valp));
5818 case DW_FORM_sec_offset:
5824 case DW_FORM_data1:;
5826 if (unlikely (dwarf_formudata (attrp, &num) != 0))
5829 const char *valuestr = NULL;
5832 /* This case can take either a constant or a loclistptr. */
5833 case DW_AT_data_member_location:
5834 if (form != DW_FORM_sec_offset
5835 && (cbargs->version >= 4
5836 || (form != DW_FORM_data4 && form != DW_FORM_data8)))
5838 if (!cbargs->silent)
5839 printf (" %*s%-20s (%s) %" PRIxMAX "\n",
5840 (int) (level * 2), "", dwarf_attr_name (attr),
5841 dwarf_form_name (form), (uintmax_t) num);
5844 /* else fallthrough */
5846 /* These cases always take a loclistptr and no constant. */
5847 case DW_AT_location:
5848 case DW_AT_data_location:
5849 case DW_AT_vtable_elem_location:
5850 case DW_AT_string_length:
5851 case DW_AT_use_location:
5852 case DW_AT_frame_base:
5853 case DW_AT_return_addr:
5854 case DW_AT_static_link:
5855 case DW_AT_GNU_call_site_value:
5856 case DW_AT_GNU_call_site_data_value:
5857 case DW_AT_GNU_call_site_target:
5858 case DW_AT_GNU_call_site_target_clobbered:
5860 bool nlpt = notice_listptr (section_loc, &known_loclistptr,
5861 cbargs->addrsize, cbargs->offset_size,
5863 if (!cbargs->silent)
5864 printf (" %*s%-20s (%s) location list [%6" PRIxMAX "]%s\n",
5865 (int) (level * 2), "", dwarf_attr_name (attr),
5866 dwarf_form_name (form), (uintmax_t) num,
5867 nlpt ? "" : " <WARNING offset too big>");
5873 bool nlpt = notice_listptr (section_ranges, &known_rangelistptr,
5874 cbargs->addrsize, cbargs->offset_size,
5876 if (!cbargs->silent)
5877 printf (" %*s%-20s (%s) range list [%6" PRIxMAX "]%s\n",
5878 (int) (level * 2), "", dwarf_attr_name (attr),
5879 dwarf_form_name (form), (uintmax_t) num,
5880 nlpt ? "" : " <WARNING offset too big>");
5884 case DW_AT_language:
5885 valuestr = dwarf_lang_name (num);
5887 case DW_AT_encoding:
5888 valuestr = dwarf_encoding_name (num);
5890 case DW_AT_accessibility:
5891 valuestr = dwarf_access_name (num);
5893 case DW_AT_visibility:
5894 valuestr = dwarf_visibility_name (num);
5896 case DW_AT_virtuality:
5897 valuestr = dwarf_virtuality_name (num);
5899 case DW_AT_identifier_case:
5900 valuestr = dwarf_identifier_case_name (num);
5902 case DW_AT_calling_convention:
5903 valuestr = dwarf_calling_convention_name (num);
5906 valuestr = dwarf_inline_name (num);
5908 case DW_AT_ordering:
5909 valuestr = dwarf_ordering_name (num);
5911 case DW_AT_discr_list:
5912 valuestr = dwarf_discr_list_name (num);
5922 /* When highpc is in constant form it is relative to lowpc.
5923 In that case also show the address. */
5925 if (attr == DW_AT_high_pc && dwarf_highpc (cbargs->die, &highpc) == 0)
5927 char *a = format_dwarf_addr (cbargs->dwflmod, cbargs->addrsize,
5929 printf (" %*s%-20s (%s) %" PRIuMAX " (%s)\n",
5930 (int) (level * 2), "", dwarf_attr_name (attr),
5931 dwarf_form_name (form), (uintmax_t) num, a);
5936 Dwarf_Sword snum = 0;
5937 if (form == DW_FORM_sdata)
5938 if (unlikely (dwarf_formsdata (attrp, &snum) != 0))
5941 if (valuestr == NULL)
5943 printf (" %*s%-20s (%s)",
5944 (int) (level * 2), "", dwarf_attr_name (attr),
5945 dwarf_form_name (form));
5946 if (form == DW_FORM_sdata)
5947 printf (" %" PRIdMAX "\n", (intmax_t) snum);
5949 printf (" %" PRIuMAX "\n", (uintmax_t) num);
5953 printf (" %*s%-20s (%s) %s",
5954 (int) (level * 2), "", dwarf_attr_name (attr),
5955 dwarf_form_name (form), valuestr);
5956 if (form == DW_FORM_sdata)
5957 printf (" (%" PRIdMAX ")\n", (intmax_t) snum);
5959 printf (" (%" PRIuMAX ")\n", (uintmax_t) num);
5968 if (unlikely (dwarf_formflag (attrp, &flag) != 0))
5971 printf (" %*s%-20s (%s) %s\n",
5972 (int) (level * 2), "", dwarf_attr_name (attr),
5973 dwarf_form_name (form), nl_langinfo (flag ? YESSTR : NOSTR));
5976 case DW_FORM_flag_present:
5979 printf (" %*s%-20s (%s) %s\n",
5980 (int) (level * 2), "", dwarf_attr_name (attr),
5981 dwarf_form_name (form), nl_langinfo (YESSTR));
5984 case DW_FORM_exprloc:
5985 case DW_FORM_block4:
5986 case DW_FORM_block2:
5987 case DW_FORM_block1:
5992 if (unlikely (dwarf_formblock (attrp, &block) != 0))
5995 printf (" %*s%-20s (%s) ",
5996 (int) (level * 2), "", dwarf_attr_name (attr),
5997 dwarf_form_name (form));
6002 if (form != DW_FORM_exprloc)
6004 print_block (block.length, block.data);
6009 case DW_AT_location:
6010 case DW_AT_data_location:
6011 case DW_AT_data_member_location:
6012 case DW_AT_vtable_elem_location:
6013 case DW_AT_string_length:
6014 case DW_AT_use_location:
6015 case DW_AT_frame_base:
6016 case DW_AT_return_addr:
6017 case DW_AT_static_link:
6018 case DW_AT_allocated:
6019 case DW_AT_associated:
6020 case DW_AT_bit_size:
6021 case DW_AT_bit_offset:
6022 case DW_AT_bit_stride:
6023 case DW_AT_byte_size:
6024 case DW_AT_byte_stride:
6026 case DW_AT_lower_bound:
6027 case DW_AT_upper_bound:
6028 case DW_AT_GNU_call_site_value:
6029 case DW_AT_GNU_call_site_data_value:
6030 case DW_AT_GNU_call_site_target:
6031 case DW_AT_GNU_call_site_target_clobbered:
6033 print_ops (cbargs->dwflmod, cbargs->dbg,
6034 12 + level * 2, 12 + level * 2,
6035 cbargs->version, cbargs->addrsize, cbargs->offset_size,
6036 attrp->cu, block.length, block.data);
6044 printf (" %*s%-20s (form: %#x) ???\n",
6045 (int) (level * 2), "", dwarf_attr_name (attr),
6054 print_debug_units (Dwfl_Module *dwflmod,
6055 Ebl *ebl, GElf_Ehdr *ehdr,
6056 Elf_Scn *scn, GElf_Shdr *shdr,
6057 Dwarf *dbg, bool debug_types)
6059 const bool silent = !(print_debug_sections & section_info);
6060 const char *secname = section_name (ebl, ehdr, shdr);
6064 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n [Offset]\n"),
6065 elf_ndxscn (scn), secname, (uint64_t) shdr->sh_offset);
6067 /* If the section is empty we don't have to do anything. */
6068 if (!silent && shdr->sh_size == 0)
6072 Dwarf_Die *dies = (Dwarf_Die *) xmalloc (maxdies * sizeof (Dwarf_Die));
6074 Dwarf_Off offset = 0;
6076 /* New compilation unit. */
6079 Dwarf_Off abbroffset;
6086 if (dwarf_next_unit (dbg, offset, &nextcu, &cuhl, &version,
6087 &abbroffset, &addrsize, &offsize,
6088 debug_types ? &typesig : NULL,
6089 debug_types ? &typeoff : NULL) != 0)
6095 printf (gettext (" Type unit at offset %" PRIu64 ":\n"
6096 " Version: %" PRIu16 ", Abbreviation section offset: %"
6097 PRIu64 ", Address size: %" PRIu8
6098 ", Offset size: %" PRIu8
6099 "\n Type signature: %#" PRIx64
6100 ", Type offset: %#" PRIx64 "\n"),
6101 (uint64_t) offset, version, abbroffset, addrsize, offsize,
6102 typesig, (uint64_t) typeoff);
6104 printf (gettext (" Compilation unit at offset %" PRIu64 ":\n"
6105 " Version: %" PRIu16 ", Abbreviation section offset: %"
6106 PRIu64 ", Address size: %" PRIu8
6107 ", Offset size: %" PRIu8 "\n"),
6108 (uint64_t) offset, version, abbroffset, addrsize, offsize);
6111 struct attrcb_args args =
6117 .addrsize = addrsize,
6118 .offset_size = offsize
6125 if (unlikely ((debug_types ? dwarf_offdie_types : dwarf_offdie)
6126 (dbg, offset, &dies[level]) == NULL))
6129 error (0, 0, gettext ("cannot get DIE at offset %" PRIu64
6130 " in section '%s': %s"),
6131 (uint64_t) offset, secname, dwarf_errmsg (-1));
6135 args.cu = dies[0].cu;
6139 offset = dwarf_dieoffset (&dies[level]);
6140 if (unlikely (offset == ~0ul))
6143 error (0, 0, gettext ("cannot get DIE offset: %s"),
6148 int tag = dwarf_tag (&dies[level]);
6149 if (unlikely (tag == DW_TAG_invalid))
6152 error (0, 0, gettext ("cannot get tag of DIE at offset %" PRIu64
6153 " in section '%s': %s"),
6154 (uint64_t) offset, secname, dwarf_errmsg (-1));
6159 printf (" [%6" PRIx64 "] %*s%s\n",
6160 (uint64_t) offset, (int) (level * 2), "",
6161 dwarf_tag_name (tag));
6163 /* Print the attribute values. */
6165 args.die = &dies[level];
6166 (void) dwarf_getattrs (&dies[level], attr_callback, &args, 0);
6168 /* Make room for the next level's DIE. */
6169 if (level + 1 == maxdies)
6170 dies = (Dwarf_Die *) xrealloc (dies,
6172 * sizeof (Dwarf_Die));
6174 int res = dwarf_child (&dies[level], &dies[level + 1]);
6177 while ((res = dwarf_siblingof (&dies[level], &dies[level])) == 1)
6181 if (unlikely (res == -1))
6184 error (0, 0, gettext ("cannot get next DIE: %s\n"),
6189 else if (unlikely (res < 0))
6192 error (0, 0, gettext ("cannot get next DIE: %s"),
6210 print_debug_info_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
6211 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6213 print_debug_units (dwflmod, ebl, ehdr, scn, shdr, dbg, false);
6217 print_debug_types_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
6218 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6220 print_debug_units (dwflmod, ebl, ehdr, scn, shdr, dbg, true);
6225 print_decoded_line_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
6226 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6229 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n\n"),
6230 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
6231 (uint64_t) shdr->sh_offset);
6234 = elf_getident (ebl->elf, NULL)[EI_CLASS] == ELFCLASS32 ? 4 : 8;
6237 Dwarf_Off ncuoffset = 0;
6239 while (dwarf_nextcu (dbg, cuoffset = ncuoffset, &ncuoffset, &hsize,
6240 NULL, NULL, NULL) == 0)
6243 if (dwarf_offdie (dbg, cuoffset + hsize, &cudie) == NULL)
6248 if (dwarf_getsrclines (&cudie, &lines, &nlines) != 0)
6251 printf (" CU [%" PRIx64 "] %s\n",
6252 dwarf_dieoffset (&cudie), dwarf_diename (&cudie));
6253 printf (" line:col SBPE* disc isa op address"
6254 " (Statement Block Prologue Epilogue *End)\n");
6255 const char *last_file = "";
6256 for (size_t n = 0; n < nlines; n++)
6258 Dwarf_Line *line = dwarf_onesrcline (lines, n);
6261 printf (" dwarf_onesrcline: %s\n", dwarf_errmsg (-1));
6264 Dwarf_Word mtime, length;
6265 const char *file = dwarf_linesrc (line, &mtime, &length);
6268 printf (" <%s> (mtime: ?, length: ?)\n", dwarf_errmsg (-1));
6271 else if (strcmp (last_file, file) != 0)
6273 printf (" %s (mtime: %" PRIu64 ", length: %" PRIu64 ")\n",
6274 file, mtime, length);
6279 bool statement, endseq, block, prologue_end, epilogue_begin;
6280 unsigned int lineop, isa, disc;
6282 dwarf_lineaddr (line, &address);
6283 dwarf_lineno (line, &lineno);
6284 dwarf_linecol (line, &colno);
6285 dwarf_lineop_index (line, &lineop);
6286 dwarf_linebeginstatement (line, &statement);
6287 dwarf_lineendsequence (line, &endseq);
6288 dwarf_lineblock (line, &block);
6289 dwarf_lineprologueend (line, &prologue_end);
6290 dwarf_lineepiloguebegin (line, &epilogue_begin);
6291 dwarf_lineisa (line, &isa);
6292 dwarf_linediscriminator (line, &disc);
6294 /* End sequence is special, it is one byte past. */
6295 char *a = format_dwarf_addr (dwflmod, address_size,
6296 address - (endseq ? 1 : 0), address);
6297 printf (" %4d:%-3d %c%c%c%c%c %4d %3d %2d %s\n",
6299 (statement ? 'S' : ' '),
6300 (block ? 'B' : ' '),
6301 (prologue_end ? 'P' : ' '),
6302 (epilogue_begin ? 'E' : ' '),
6303 (endseq ? '*' : ' '),
6304 disc, isa, lineop, a);
6315 print_debug_line_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
6316 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6320 print_decoded_line_section (dwflmod, ebl, ehdr, scn, shdr, dbg);
6325 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
6326 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
6327 (uint64_t) shdr->sh_offset);
6329 if (shdr->sh_size == 0)
6332 /* There is no functionality in libdw to read the information in the
6333 way it is represented here. Hardcode the decoder. */
6334 Elf_Data *data = dbg->sectiondata[IDX_debug_line];
6335 if (unlikely (data == NULL || data->d_buf == NULL))
6337 error (0, 0, gettext ("cannot get line data section data: %s"),
6342 const unsigned char *linep = (const unsigned char *) data->d_buf;
6343 const unsigned char *lineendp;
6346 < (lineendp = (const unsigned char *) data->d_buf + data->d_size))
6348 size_t start_offset = linep - (const unsigned char *) data->d_buf;
6350 printf (gettext ("\nTable at offset %Zu:\n"), start_offset);
6352 if (unlikely (linep + 4 > lineendp))
6354 Dwarf_Word unit_length = read_4ubyte_unaligned_inc (dbg, linep);
6355 unsigned int length = 4;
6356 if (unlikely (unit_length == 0xffffffff))
6358 if (unlikely (linep + 8 > lineendp))
6361 error (0, 0, gettext ("invalid data in section [%zu] '%s'"),
6362 elf_ndxscn (scn), section_name (ebl, ehdr, shdr));
6365 unit_length = read_8ubyte_unaligned_inc (dbg, linep);
6369 /* Check whether we have enough room in the section. */
6370 if (unlikely (unit_length > (size_t) (lineendp - linep)
6371 || unit_length < 2 + length + 5 * 1))
6373 lineendp = linep + unit_length;
6375 /* The next element of the header is the version identifier. */
6376 uint_fast16_t version = read_2ubyte_unaligned_inc (dbg, linep);
6378 /* Next comes the header length. */
6379 Dwarf_Word header_length;
6381 header_length = read_4ubyte_unaligned_inc (dbg, linep);
6383 header_length = read_8ubyte_unaligned_inc (dbg, linep);
6384 //const unsigned char *header_start = linep;
6386 /* Next the minimum instruction length. */
6387 uint_fast8_t minimum_instr_len = *linep++;
6389 /* Next the maximum operations per instruction, in version 4 format. */
6390 uint_fast8_t max_ops_per_instr = version < 4 ? 1 : *linep++;
6392 /* Then the flag determining the default value of the is_stmt
6394 uint_fast8_t default_is_stmt = *linep++;
6396 /* Now the line base. */
6397 int_fast8_t line_base = *((const int_fast8_t *) linep);
6400 /* And the line range. */
6401 uint_fast8_t line_range = *linep++;
6403 /* The opcode base. */
6404 uint_fast8_t opcode_base = *linep++;
6406 /* Print what we got so far. */
6407 printf (gettext ("\n"
6408 " Length: %" PRIu64 "\n"
6409 " DWARF version: %" PRIuFAST16 "\n"
6410 " Prologue length: %" PRIu64 "\n"
6411 " Minimum instruction length: %" PRIuFAST8 "\n"
6412 " Maximum operations per instruction: %" PRIuFAST8 "\n"
6413 " Initial value if '%s': %" PRIuFAST8 "\n"
6414 " Line base: %" PRIdFAST8 "\n"
6415 " Line range: %" PRIuFAST8 "\n"
6416 " Opcode base: %" PRIuFAST8 "\n"
6419 (uint64_t) unit_length, version, (uint64_t) header_length,
6420 minimum_instr_len, max_ops_per_instr,
6421 "is_stmt", default_is_stmt, line_base,
6422 line_range, opcode_base);
6424 if (unlikely (linep + opcode_base - 1 >= lineendp))
6428 gettext ("invalid data at offset %tu in section [%zu] '%s'"),
6429 linep - (const unsigned char *) data->d_buf,
6430 elf_ndxscn (scn), section_name (ebl, ehdr, shdr));
6434 int opcode_base_l10 = 1;
6435 unsigned int tmp = opcode_base;
6441 const uint8_t *standard_opcode_lengths = linep - 1;
6442 for (uint_fast8_t cnt = 1; cnt < opcode_base; ++cnt)
6443 printf (ngettext (" [%*" PRIuFAST8 "] %hhu argument\n",
6444 " [%*" PRIuFAST8 "] %hhu arguments\n",
6445 (int) linep[cnt - 1]),
6446 opcode_base_l10, cnt, linep[cnt - 1]);
6447 linep += opcode_base - 1;
6448 if (unlikely (linep >= lineendp))
6451 puts (gettext ("\nDirectory table:"));
6454 unsigned char *endp = memchr (linep, '\0', lineendp - linep);
6455 if (unlikely (endp == NULL))
6458 printf (" %s\n", (char *) linep);
6462 /* Skip the final NUL byte. */
6465 if (unlikely (linep >= lineendp))
6467 puts (gettext ("\nFile name table:\n"
6468 " Entry Dir Time Size Name"));
6469 for (unsigned int cnt = 1; *linep != 0; ++cnt)
6471 /* First comes the file name. */
6472 char *fname = (char *) linep;
6473 unsigned char *endp = memchr (fname, '\0', lineendp - linep);
6474 if (unlikely (endp == NULL))
6478 /* Then the index. */
6479 unsigned int diridx;
6480 if (lineendp - linep < 1)
6482 get_uleb128 (diridx, linep, lineendp);
6484 /* Next comes the modification time. */
6486 if (lineendp - linep < 1)
6488 get_uleb128 (mtime, linep, lineendp);
6490 /* Finally the length of the file. */
6492 if (lineendp - linep < 1)
6494 get_uleb128 (fsize, linep, lineendp);
6496 printf (" %-5u %-5u %-9u %-9u %s\n",
6497 cnt, diridx, mtime, fsize, fname);
6499 /* Skip the final NUL byte. */
6502 puts (gettext ("\nLine number statements:"));
6503 Dwarf_Word address = 0;
6504 unsigned int op_index = 0;
6506 uint_fast8_t is_stmt = default_is_stmt;
6508 /* Default address value, in case we do not find the CU. */
6510 = elf_getident (ebl->elf, NULL)[EI_CLASS] == ELFCLASS32 ? 4 : 8;
6512 /* Determine the CU this block is for. */
6514 Dwarf_Off ncuoffset = 0;
6516 while (dwarf_nextcu (dbg, cuoffset = ncuoffset, &ncuoffset, &hsize,
6517 NULL, NULL, NULL) == 0)
6520 if (dwarf_offdie (dbg, cuoffset + hsize, &cudie) == NULL)
6522 Dwarf_Attribute stmt_list;
6523 if (dwarf_attr (&cudie, DW_AT_stmt_list, &stmt_list) == NULL)
6526 if (dwarf_formudata (&stmt_list, &lineoff) != 0)
6528 if (lineoff == start_offset)
6531 address_size = cudie.cu->address_size;
6536 /* Apply the "operation advance" from a special opcode
6537 or DW_LNS_advance_pc (as per DWARF4 6.2.5.1). */
6538 unsigned int op_addr_advance;
6540 inline void advance_pc (unsigned int op_advance)
6542 op_addr_advance = minimum_instr_len * ((op_index + op_advance)
6543 / max_ops_per_instr);
6544 address += op_advance;
6545 show_op_index = (op_index > 0 ||
6546 (op_index + op_advance) % max_ops_per_instr > 0);
6547 op_index = (op_index + op_advance) % max_ops_per_instr;
6550 if (max_ops_per_instr == 0)
6553 gettext ("invalid maximum operations per instruction is zero"));
6558 while (linep < lineendp)
6560 size_t offset = linep - (const unsigned char *) data->d_buf;
6564 /* Read the opcode. */
6565 unsigned int opcode = *linep++;
6567 printf (" [%6" PRIx64 "]", (uint64_t)offset);
6568 /* Is this a special opcode? */
6569 if (likely (opcode >= opcode_base))
6571 if (unlikely (line_range == 0))
6574 /* Yes. Handling this is quite easy since the opcode value
6577 opcode = (desired line increment - line_base)
6578 + (line_range * address advance) + opcode_base
6580 int line_increment = (line_base
6581 + (opcode - opcode_base) % line_range);
6583 /* Perform the increments. */
6584 line += line_increment;
6585 advance_pc ((opcode - opcode_base) / line_range);
6587 char *a = format_dwarf_addr (dwflmod, 0, address, address);
6590 special opcode %u: address+%u = %s, op_index = %u, line%+d = %zu\n"),
6591 opcode, op_addr_advance, a, op_index,
6592 line_increment, line);
6595 special opcode %u: address+%u = %s, line%+d = %zu\n"),
6596 opcode, op_addr_advance, a, line_increment, line);
6599 else if (opcode == 0)
6601 /* This an extended opcode. */
6602 if (unlikely (linep + 2 > lineendp))
6606 unsigned int len = *linep++;
6608 if (unlikely (linep + len > lineendp))
6611 /* The sub-opcode. */
6614 printf (gettext (" extended opcode %u: "), opcode);
6618 case DW_LNE_end_sequence:
6619 puts (gettext (" end of sequence"));
6621 /* Reset the registers we care about. */
6625 is_stmt = default_is_stmt;
6628 case DW_LNE_set_address:
6630 if (unlikely ((size_t) (lineendp - linep) < address_size))
6632 if (address_size == 4)
6633 address = read_4ubyte_unaligned_inc (dbg, linep);
6635 address = read_8ubyte_unaligned_inc (dbg, linep);
6637 char *a = format_dwarf_addr (dwflmod, 0, address, address);
6638 printf (gettext (" set address to %s\n"), a);
6643 case DW_LNE_define_file:
6645 char *fname = (char *) linep;
6646 unsigned char *endp = memchr (linep, '\0',
6648 if (unlikely (endp == NULL))
6652 unsigned int diridx;
6653 if (lineendp - linep < 1)
6655 get_uleb128 (diridx, linep, lineendp);
6657 if (lineendp - linep < 1)
6659 get_uleb128 (mtime, linep, lineendp);
6660 Dwarf_Word filelength;
6661 if (lineendp - linep < 1)
6663 get_uleb128 (filelength, linep, lineendp);
6666 define new file: dir=%u, mtime=%" PRIu64 ", length=%" PRIu64 ", name=%s\n"),
6667 diridx, (uint64_t) mtime, (uint64_t) filelength,
6672 case DW_LNE_set_discriminator:
6673 /* Takes one ULEB128 parameter, the discriminator. */
6674 if (unlikely (standard_opcode_lengths[opcode] != 1))
6677 get_uleb128 (u128, linep, lineendp);
6678 printf (gettext (" set discriminator to %u\n"), u128);
6682 /* Unknown, ignore it. */
6683 puts (gettext (" unknown opcode"));
6688 else if (opcode <= DW_LNS_set_isa)
6690 /* This is a known standard opcode. */
6694 /* Takes no argument. */
6695 puts (gettext (" copy"));
6698 case DW_LNS_advance_pc:
6699 /* Takes one uleb128 parameter which is added to the
6701 get_uleb128 (u128, linep, lineendp);
6704 char *a = format_dwarf_addr (dwflmod, 0, address, address);
6707 advance address by %u to %s, op_index to %u\n"),
6708 op_addr_advance, a, op_index);
6710 printf (gettext (" advance address by %u to %s\n"),
6711 op_addr_advance, a);
6716 case DW_LNS_advance_line:
6717 /* Takes one sleb128 parameter which is added to the
6719 get_sleb128 (s128, linep, lineendp);
6722 advance line by constant %d to %" PRId64 "\n"),
6723 s128, (int64_t) line);
6726 case DW_LNS_set_file:
6727 /* Takes one uleb128 parameter which is stored in file. */
6728 get_uleb128 (u128, linep, lineendp);
6729 printf (gettext (" set file to %" PRIu64 "\n"),
6733 case DW_LNS_set_column:
6734 /* Takes one uleb128 parameter which is stored in column. */
6735 if (unlikely (standard_opcode_lengths[opcode] != 1))
6738 get_uleb128 (u128, linep, lineendp);
6739 printf (gettext (" set column to %" PRIu64 "\n"),
6743 case DW_LNS_negate_stmt:
6744 /* Takes no argument. */
6745 is_stmt = 1 - is_stmt;
6746 printf (gettext (" set '%s' to %" PRIuFAST8 "\n"),
6747 "is_stmt", is_stmt);
6750 case DW_LNS_set_basic_block:
6751 /* Takes no argument. */
6752 puts (gettext (" set basic block flag"));
6755 case DW_LNS_const_add_pc:
6756 /* Takes no argument. */
6758 if (unlikely (line_range == 0))
6761 advance_pc ((255 - opcode_base) / line_range);
6763 char *a = format_dwarf_addr (dwflmod, 0, address, address);
6766 advance address by constant %u to %s, op_index to %u\n"),
6767 op_addr_advance, a, op_index);
6770 advance address by constant %u to %s\n"),
6771 op_addr_advance, a);
6776 case DW_LNS_fixed_advance_pc:
6777 /* Takes one 16 bit parameter which is added to the
6779 if (unlikely (standard_opcode_lengths[opcode] != 1))
6782 u128 = read_2ubyte_unaligned_inc (dbg, linep);
6786 char *a = format_dwarf_addr (dwflmod, 0, address, address);
6788 advance address by fixed value %u to %s\n"),
6794 case DW_LNS_set_prologue_end:
6795 /* Takes no argument. */
6796 puts (gettext (" set prologue end flag"));
6799 case DW_LNS_set_epilogue_begin:
6800 /* Takes no argument. */
6801 puts (gettext (" set epilogue begin flag"));
6804 case DW_LNS_set_isa:
6805 /* Takes one uleb128 parameter which is stored in isa. */
6806 if (unlikely (standard_opcode_lengths[opcode] != 1))
6809 get_uleb128 (u128, linep, lineendp);
6810 printf (gettext (" set isa to %u\n"), u128);
6816 /* This is a new opcode the generator but not we know about.
6817 Read the parameters associated with it but then discard
6818 everything. Read all the parameters for this opcode. */
6819 printf (ngettext (" unknown opcode with %" PRIu8 " parameter:",
6820 " unknown opcode with %" PRIu8 " parameters:",
6821 standard_opcode_lengths[opcode]),
6822 standard_opcode_lengths[opcode]);
6823 for (int n = standard_opcode_lengths[opcode]; n > 0; --n)
6825 get_uleb128 (u128, linep, lineendp);
6826 if (n != standard_opcode_lengths[opcode])
6827 putc_unlocked (',', stdout);
6828 printf (" %u", u128);
6831 /* Next round, ignore this opcode. */
6837 /* There must only be one data block. */
6838 assert (elf_getdata (scn, data) == NULL);
6843 print_debug_loc_section (Dwfl_Module *dwflmod,
6844 Ebl *ebl, GElf_Ehdr *ehdr,
6845 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6847 Elf_Data *data = dbg->sectiondata[IDX_debug_loc];
6849 if (unlikely (data == NULL))
6851 error (0, 0, gettext ("cannot get .debug_loc content: %s"),
6857 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
6858 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
6859 (uint64_t) shdr->sh_offset);
6861 sort_listptr (&known_loclistptr, "loclistptr");
6862 size_t listptr_idx = 0;
6864 uint_fast8_t address_size = ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8;
6865 uint_fast8_t offset_size = 4;
6868 struct Dwarf_CU *cu = NULL;
6869 Dwarf_Addr base = 0;
6870 unsigned char *readp = data->d_buf;
6871 unsigned char *const endp = (unsigned char *) data->d_buf + data->d_size;
6872 while (readp < endp)
6874 ptrdiff_t offset = readp - (unsigned char *) data->d_buf;
6876 if (first && skip_listptr_hole (&known_loclistptr, &listptr_idx,
6877 &address_size, &offset_size, &base,
6878 &cu, offset, &readp, endp))
6881 if (unlikely (data->d_size - offset < (size_t) address_size * 2))
6883 printf (gettext (" [%6tx] <INVALID DATA>\n"), offset);
6889 if (address_size == 8)
6891 begin = read_8ubyte_unaligned_inc (dbg, readp);
6892 end = read_8ubyte_unaligned_inc (dbg, readp);
6896 begin = read_4ubyte_unaligned_inc (dbg, readp);
6897 end = read_4ubyte_unaligned_inc (dbg, readp);
6898 if (begin == (Dwarf_Addr) (uint32_t) -1)
6899 begin = (Dwarf_Addr) -1l;
6902 if (begin == (Dwarf_Addr) -1l) /* Base address entry. */
6904 char *b = format_dwarf_addr (dwflmod, address_size, end, end);
6905 printf (gettext (" [%6tx] base address %s\n"), offset, b);
6909 else if (begin == 0 && end == 0) /* End of list entry. */
6912 printf (gettext (" [%6tx] empty list\n"), offset);
6917 /* We have a location expression entry. */
6918 uint_fast16_t len = read_2ubyte_unaligned_inc (dbg, readp);
6920 char *b = format_dwarf_addr (dwflmod, address_size, base + begin,
6922 char *e = format_dwarf_addr (dwflmod, address_size, base + end,
6925 if (first) /* First entry in a list. */
6926 printf (gettext (" [%6tx] %s..%s"), offset, b, e);
6928 printf (gettext (" %s..%s"), b, e);
6933 if (endp - readp <= (ptrdiff_t) len)
6935 fputs (gettext (" <INVALID DATA>\n"), stdout);
6939 print_ops (dwflmod, dbg, 1, 18 + (address_size * 4),
6940 3 /*XXX*/, address_size, offset_size, cu, len, readp);
6953 struct mac_culist *next;
6958 mac_compare (const void *p1, const void *p2)
6960 struct mac_culist *m1 = (struct mac_culist *) p1;
6961 struct mac_culist *m2 = (struct mac_culist *) p2;
6963 if (m1->offset < m2->offset)
6965 if (m1->offset > m2->offset)
6972 print_debug_macinfo_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
6973 Ebl *ebl, GElf_Ehdr *ehdr,
6974 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6977 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
6978 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
6979 (uint64_t) shdr->sh_offset);
6980 putc_unlocked ('\n', stdout);
6982 /* There is no function in libdw to iterate over the raw content of
6983 the section but it is easy enough to do. */
6984 Elf_Data *data = dbg->sectiondata[IDX_debug_macinfo];
6985 if (unlikely (data == NULL || data->d_buf == NULL))
6987 error (0, 0, gettext ("cannot get macro information section data: %s"),
6992 /* Get the source file information for all CUs. */
6996 struct mac_culist *culist = NULL;
6998 while (dwarf_nextcu (dbg, offset = ncu, &ncu, &hsize, NULL, NULL, NULL) == 0)
7001 if (dwarf_offdie (dbg, offset + hsize, &cudie) == NULL)
7004 Dwarf_Attribute attr;
7005 if (dwarf_attr (&cudie, DW_AT_macro_info, &attr) == NULL)
7009 if (dwarf_formudata (&attr, &macoff) != 0)
7012 struct mac_culist *newp = (struct mac_culist *) alloca (sizeof (*newp));
7014 newp->offset = macoff;
7016 newp->next = culist;
7021 /* Convert the list into an array for easier consumption. */
7022 struct mac_culist *cus = (struct mac_culist *) alloca ((nculist + 1)
7025 cus[nculist].offset = data->d_size;
7028 for (size_t cnt = nculist - 1; culist != NULL; --cnt)
7030 assert (cnt < nculist);
7032 culist = culist->next;
7035 /* Sort the array according to the offset in the .debug_macinfo
7036 section. Note we keep the sentinel at the end. */
7037 qsort (cus, nculist, sizeof (*cus), mac_compare);
7040 const unsigned char *readp = (const unsigned char *) data->d_buf;
7041 const unsigned char *readendp = readp + data->d_size;
7044 while (readp < readendp)
7046 unsigned int opcode = *readp++;
7048 unsigned int u128_2;
7049 const unsigned char *endp;
7053 case DW_MACINFO_define:
7054 case DW_MACINFO_undef:
7055 case DW_MACINFO_vendor_ext:
7056 /* For the first two opcodes the parameters are
7060 We can treat these cases together. */
7061 get_uleb128 (u128, readp, readendp);
7063 endp = memchr (readp, '\0', readendp - readp);
7064 if (unlikely (endp == NULL))
7067 %*s*** non-terminated string at end of section"),
7072 if (opcode == DW_MACINFO_define)
7073 printf ("%*s#define %s, line %u\n",
7074 level, "", (char *) readp, u128);
7075 else if (opcode == DW_MACINFO_undef)
7076 printf ("%*s#undef %s, line %u\n",
7077 level, "", (char *) readp, u128);
7079 printf (" #vendor-ext %s, number %u\n", (char *) readp, u128);
7084 case DW_MACINFO_start_file:
7085 /* The two parameters are line and file index, in this order. */
7086 get_uleb128 (u128, readp, readendp);
7087 if (readendp - readp < 1)
7090 %*s*** missing DW_MACINFO_start_file argument at end of section"),
7094 get_uleb128 (u128_2, readp, readendp);
7096 /* Find the CU DIE for this file. */
7097 size_t macoff = readp - (const unsigned char *) data->d_buf;
7098 const char *fname = "???";
7099 if (macoff >= cus[0].offset)
7101 while (macoff >= cus[1].offset)
7104 if (cus[0].files == NULL
7105 && dwarf_getsrcfiles (&cus[0].die, &cus[0].files, NULL) != 0)
7106 cus[0].files = (Dwarf_Files *) -1l;
7108 if (cus[0].files != (Dwarf_Files *) -1l)
7109 fname = (dwarf_filesrc (cus[0].files, u128_2, NULL, NULL)
7113 printf ("%*sstart_file %u, [%u] %s\n",
7114 level, "", u128, u128_2, fname);
7118 case DW_MACINFO_end_file:
7120 printf ("%*send_file\n", level, "");
7121 /* Nothing more to do. */
7125 // XXX gcc seems to generate files with a trailing zero.
7126 if (unlikely (opcode != 0 || readp != readendp))
7127 printf ("%*s*** invalid opcode %u\n", level, "", opcode);
7135 print_debug_macro_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
7136 Ebl *ebl, GElf_Ehdr *ehdr,
7137 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
7140 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
7141 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
7142 (uint64_t) shdr->sh_offset);
7143 putc_unlocked ('\n', stdout);
7145 Elf_Data *data = dbg->sectiondata[IDX_debug_macro];
7146 if (unlikely (data == NULL || data->d_buf == NULL))
7148 error (0, 0, gettext ("cannot get macro information section data: %s"),
7153 /* Get the source file information for all CUs. Uses same
7154 datastructure as macinfo. But uses offset field to directly
7155 match .debug_line offset. And just stored in a list. */
7159 struct mac_culist *culist = NULL;
7161 while (dwarf_nextcu (dbg, offset = ncu, &ncu, &hsize, NULL, NULL, NULL) == 0)
7164 if (dwarf_offdie (dbg, offset + hsize, &cudie) == NULL)
7167 Dwarf_Attribute attr;
7168 if (dwarf_attr (&cudie, DW_AT_stmt_list, &attr) == NULL)
7172 if (dwarf_formudata (&attr, &lineoff) != 0)
7175 struct mac_culist *newp = (struct mac_culist *) alloca (sizeof (*newp));
7177 newp->offset = lineoff;
7179 newp->next = culist;
7184 const unsigned char *readp = (const unsigned char *) data->d_buf;
7185 const unsigned char *readendp = readp + data->d_size;
7187 while (readp < readendp)
7189 printf (gettext (" Offset: 0x%" PRIx64 "\n"),
7190 (uint64_t) (readp - (const unsigned char *) data->d_buf));
7192 // Header, 2 byte version, 1 byte flag, optional .debug_line offset,
7193 // optional vendor extension macro entry table.
7194 if (readp + 2 > readendp)
7197 error (0, 0, gettext ("invalid data"));
7200 const uint16_t vers = read_2ubyte_unaligned_inc (dbg, readp);
7201 printf (gettext (" Version: %" PRIu16 "\n"), vers);
7203 // Version 4 is the GNU extension for DWARF4. DWARF5 will use version
7204 // 5 when it gets standardized.
7207 printf (gettext (" unknown version, cannot parse section\n"));
7211 if (readp + 1 > readendp)
7213 const unsigned char flag = *readp++;
7214 printf (gettext (" Flag: 0x%" PRIx8 "\n"), flag);
7216 unsigned int offset_len = (flag & 0x01) ? 8 : 4;
7217 printf (gettext (" Offset length: %" PRIu8 "\n"), offset_len);
7218 Dwarf_Off line_offset = -1;
7221 if (offset_len == 8)
7222 line_offset = read_8ubyte_unaligned_inc (dbg, readp);
7224 line_offset = read_4ubyte_unaligned_inc (dbg, readp);
7225 printf (gettext (" .debug_line offset: 0x%" PRIx64 "\n"),
7229 const unsigned char *vendor[DW_MACRO_GNU_hi_user - DW_MACRO_GNU_lo_user];
7230 memset (vendor, 0, sizeof vendor);
7233 // 1 byte length, for each item, 1 byte opcode, uleb128 number
7234 // of arguments, for each argument 1 byte form code.
7235 if (readp + 1 > readendp)
7237 unsigned int tlen = *readp++;
7238 printf (gettext (" extension opcode table, %" PRIu8 " items:\n"),
7240 for (unsigned int i = 0; i < tlen; i++)
7242 if (readp + 1 > readendp)
7244 unsigned int opcode = *readp++;
7245 printf (gettext (" [%" PRIx8 "]"), opcode);
7246 if (opcode < DW_MACRO_GNU_lo_user
7247 || opcode > DW_MACRO_GNU_hi_user)
7249 // Record the start of description for this vendor opcode.
7250 // uleb128 nr args, 1 byte per arg form.
7251 vendor[opcode - DW_MACRO_GNU_lo_user] = readp;
7252 if (readp + 1 > readendp)
7254 unsigned int args = *readp++;
7257 printf (gettext (" %" PRIu8 " arguments:"), args);
7260 if (readp + 1 > readendp)
7262 unsigned int form = *readp++;
7263 printf (" %s", dwarf_form_string (form));
7264 if (form != DW_FORM_data1
7265 && form != DW_FORM_data2
7266 && form != DW_FORM_data4
7267 && form != DW_FORM_data8
7268 && form != DW_FORM_sdata
7269 && form != DW_FORM_udata
7270 && form != DW_FORM_block
7271 && form != DW_FORM_block1
7272 && form != DW_FORM_block2
7273 && form != DW_FORM_block4
7274 && form != DW_FORM_flag
7275 && form != DW_FORM_string
7276 && form != DW_FORM_strp
7277 && form != DW_FORM_sec_offset)
7281 putchar_unlocked (',');
7285 printf (gettext (" no arguments."));
7286 putchar_unlocked ('\n');
7289 putchar_unlocked ('\n');
7292 if (readp + 1 > readendp)
7294 unsigned int opcode = *readp++;
7298 unsigned int u128_2;
7299 const unsigned char *endp;
7304 case DW_MACRO_GNU_start_file:
7305 get_uleb128 (u128, readp, readendp);
7306 if (readp >= readendp)
7308 get_uleb128 (u128_2, readp, readendp);
7310 /* Find the CU DIE that matches this line offset. */
7311 const char *fname = "???";
7312 if (line_offset != (Dwarf_Off) -1)
7314 struct mac_culist *cu = culist;
7315 while (cu != NULL && line_offset != cu->offset)
7319 if (cu->files == NULL
7320 && dwarf_getsrcfiles (&cu->die, &cu->files,
7322 cu->files = (Dwarf_Files *) -1l;
7324 if (cu->files != (Dwarf_Files *) -1l)
7325 fname = (dwarf_filesrc (cu->files, u128_2,
7326 NULL, NULL) ?: "???");
7329 printf ("%*sstart_file %u, [%u] %s\n",
7330 level, "", u128, u128_2, fname);
7334 case DW_MACRO_GNU_end_file:
7336 printf ("%*send_file\n", level, "");
7339 case DW_MACRO_GNU_define:
7340 get_uleb128 (u128, readp, readendp);
7341 endp = memchr (readp, '\0', readendp - readp);
7344 printf ("%*s#define %s, line %u\n",
7345 level, "", readp, u128);
7349 case DW_MACRO_GNU_undef:
7350 get_uleb128 (u128, readp, readendp);
7351 endp = memchr (readp, '\0', readendp - readp);
7354 printf ("%*s#undef %s, line %u\n",
7355 level, "", readp, u128);
7359 case DW_MACRO_GNU_define_indirect:
7360 get_uleb128 (u128, readp, readendp);
7361 if (readp + offset_len > readendp)
7363 if (offset_len == 8)
7364 off = read_8ubyte_unaligned_inc (dbg, readp);
7366 off = read_4ubyte_unaligned_inc (dbg, readp);
7367 printf ("%*s#define %s, line %u (indirect)\n",
7368 level, "", dwarf_getstring (dbg, off, NULL), u128);
7371 case DW_MACRO_GNU_undef_indirect:
7372 get_uleb128 (u128, readp, readendp);
7373 if (readp + offset_len > readendp)
7375 if (offset_len == 8)
7376 off = read_8ubyte_unaligned_inc (dbg, readp);
7378 off = read_4ubyte_unaligned_inc (dbg, readp);
7379 printf ("%*s#undef %s, line %u (indirect)\n",
7380 level, "", dwarf_getstring (dbg, off, NULL), u128);
7383 case DW_MACRO_GNU_transparent_include:
7384 if (readp + offset_len > readendp)
7386 if (offset_len == 8)
7387 off = read_8ubyte_unaligned_inc (dbg, readp);
7389 off = read_4ubyte_unaligned_inc (dbg, readp);
7390 printf ("%*s#include offset 0x%" PRIx64 "\n",
7395 printf ("%*svendor opcode 0x%" PRIx8, level, "", opcode);
7396 if (opcode < DW_MACRO_GNU_lo_user
7397 || opcode > DW_MACRO_GNU_lo_user
7398 || vendor[opcode - DW_MACRO_GNU_lo_user] == NULL)
7401 const unsigned char *op_desc;
7402 op_desc = vendor[opcode - DW_MACRO_GNU_lo_user];
7404 // Just skip the arguments, we cannot really interpret them,
7405 // but print as much as we can.
7406 unsigned int args = *op_desc++;
7409 unsigned int form = *op_desc++;
7414 if (readp + 1 > readendp)
7417 printf (" %" PRIx8, (unsigned int) val);
7421 if (readp + 2 > readendp)
7423 val = read_2ubyte_unaligned_inc (dbg, readp);
7424 printf(" %" PRIx16, (unsigned int) val);
7428 if (readp + 4 > readendp)
7430 val = read_4ubyte_unaligned_inc (dbg, readp);
7431 printf (" %" PRIx32, (unsigned int) val);
7435 if (readp + 8 > readendp)
7437 val = read_8ubyte_unaligned_inc (dbg, readp);
7438 printf (" %" PRIx64, val);
7442 get_sleb128 (val, readp, readendp);
7443 printf (" %" PRIx64, val);
7447 get_uleb128 (val, readp, readendp);
7448 printf (" %" PRIx64, val);
7452 get_uleb128 (val, readp, readendp);
7453 printf (" block[%" PRIu64 "]", val);
7454 if (readp + val > readendp)
7459 case DW_FORM_block1:
7460 if (readp + 1 > readendp)
7463 printf (" block[%" PRIu64 "]", val);
7464 if (readp + val > readendp)
7468 case DW_FORM_block2:
7469 if (readp + 2 > readendp)
7471 val = read_2ubyte_unaligned_inc (dbg, readp);
7472 printf (" block[%" PRIu64 "]", val);
7473 if (readp + val > readendp)
7477 case DW_FORM_block4:
7478 if (readp + 2 > readendp)
7480 val =read_4ubyte_unaligned_inc (dbg, readp);
7481 printf (" block[%" PRIu64 "]", val);
7482 if (readp + val > readendp)
7487 if (readp + 1 > readendp)
7490 printf (" %s", nl_langinfo (val != 0 ? YESSTR : NOSTR));
7493 case DW_FORM_string:
7494 endp = memchr (readp, '\0', readendp - readp);
7497 printf (" %s", readp);
7502 if (readp + offset_len > readendp)
7504 if (offset_len == 8)
7505 val = read_8ubyte_unaligned_inc (dbg, readp);
7507 val = read_4ubyte_unaligned_inc (dbg, readp);
7508 printf (" %s", dwarf_getstring (dbg, val, NULL));
7511 case DW_FORM_sec_offset:
7512 if (readp + offset_len > readendp)
7514 if (offset_len == 8)
7515 val = read_8ubyte_unaligned_inc (dbg, readp);
7517 val = read_4ubyte_unaligned_inc (dbg, readp);
7518 printf (" %" PRIx64, val);
7522 error (0, 0, gettext ("vendor opcode not verified?"));
7528 putchar_unlocked (',');
7530 putchar_unlocked ('\n');
7533 if (readp + 1 > readendp)
7537 putchar_unlocked ('\n');
7543 /* Callback for printing global names. */
7545 print_pubnames (Dwarf *dbg __attribute__ ((unused)), Dwarf_Global *global,
7548 int *np = (int *) arg;
7550 printf (gettext (" [%5d] DIE offset: %6" PRId64
7551 ", CU DIE offset: %6" PRId64 ", name: %s\n"),
7552 (*np)++, global->die_offset, global->cu_offset, global->name);
7558 /* Print the known exported symbols in the DWARF section '.debug_pubnames'. */
7560 print_debug_pubnames_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
7561 Ebl *ebl, GElf_Ehdr *ehdr,
7562 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
7564 printf (gettext ("\nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
7565 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
7566 (uint64_t) shdr->sh_offset);
7569 (void) dwarf_getpubnames (dbg, print_pubnames, &n, 0);
7572 /* Print the content of the DWARF string section '.debug_str'. */
7574 print_debug_str_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
7575 Ebl *ebl, GElf_Ehdr *ehdr,
7576 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
7578 const size_t sh_size = (dbg->sectiondata[IDX_debug_str] ?
7579 dbg->sectiondata[IDX_debug_str]->d_size : 0);
7581 /* Compute floor(log16(shdr->sh_size)). */
7582 GElf_Addr tmp = sh_size;
7589 digits = MAX (4, digits);
7591 printf (gettext ("\nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"
7594 section_name (ebl, ehdr, shdr), (uint64_t) shdr->sh_offset,
7595 /* TRANS: the debugstr| prefix makes the string unique. */
7596 digits + 2, sgettext ("debugstr|Offset"));
7598 Dwarf_Off offset = 0;
7599 while (offset < sh_size)
7602 const char *str = dwarf_getstring (dbg, offset, &len);
7603 if (unlikely (str == NULL))
7605 printf (gettext (" *** error while reading strings: %s\n"),
7610 printf (" [%*" PRIx64 "] \"%s\"\n", digits, (uint64_t) offset, str);
7617 /* Print the content of the call frame search table section
7620 print_debug_frame_hdr_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
7621 Ebl *ebl __attribute__ ((unused)),
7622 GElf_Ehdr *ehdr __attribute__ ((unused)),
7623 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
7626 \nCall frame search table section [%2zu] '.eh_frame_hdr':\n"),
7629 Elf_Data *data = elf_rawdata (scn, NULL);
7631 if (unlikely (data == NULL))
7633 error (0, 0, gettext ("cannot get %s content: %s"),
7634 ".eh_frame_hdr", elf_errmsg (-1));
7638 const unsigned char *readp = data->d_buf;
7639 const unsigned char *const dataend = ((unsigned char *) data->d_buf
7642 if (unlikely (readp + 4 > dataend))
7645 error (0, 0, gettext ("invalid data"));
7649 unsigned int version = *readp++;
7650 unsigned int eh_frame_ptr_enc = *readp++;
7651 unsigned int fde_count_enc = *readp++;
7652 unsigned int table_enc = *readp++;
7654 printf (" version: %u\n"
7655 " eh_frame_ptr_enc: %#x ",
7656 version, eh_frame_ptr_enc);
7657 print_encoding_base ("", eh_frame_ptr_enc);
7658 printf (" fde_count_enc: %#x ", fde_count_enc);
7659 print_encoding_base ("", fde_count_enc);
7660 printf (" table_enc: %#x ", table_enc);
7661 print_encoding_base ("", table_enc);
7663 uint64_t eh_frame_ptr = 0;
7664 if (eh_frame_ptr_enc != DW_EH_PE_omit)
7666 readp = read_encoded (eh_frame_ptr_enc, readp, dataend, &eh_frame_ptr,
7668 if (unlikely (readp == NULL))
7671 printf (" eh_frame_ptr: %#" PRIx64, eh_frame_ptr);
7672 if ((eh_frame_ptr_enc & 0x70) == DW_EH_PE_pcrel)
7673 printf (" (offset: %#" PRIx64 ")",
7674 /* +4 because of the 4 byte header of the section. */
7675 (uint64_t) shdr->sh_offset + 4 + eh_frame_ptr);
7677 putchar_unlocked ('\n');
7680 uint64_t fde_count = 0;
7681 if (fde_count_enc != DW_EH_PE_omit)
7683 readp = read_encoded (fde_count_enc, readp, dataend, &fde_count, dbg);
7684 if (unlikely (readp == NULL))
7687 printf (" fde_count: %" PRIu64 "\n", fde_count);
7690 if (fde_count == 0 || table_enc == DW_EH_PE_omit)
7695 /* Optimize for the most common case. */
7696 if (table_enc == (DW_EH_PE_datarel | DW_EH_PE_sdata4))
7697 while (fde_count > 0 && readp + 8 <= dataend)
7699 int32_t initial_location = read_4sbyte_unaligned_inc (dbg, readp);
7700 uint64_t initial_offset = ((uint64_t) shdr->sh_offset
7701 + (int64_t) initial_location);
7702 int32_t address = read_4sbyte_unaligned_inc (dbg, readp);
7703 // XXX Possibly print symbol name or section offset for initial_offset
7704 printf (" %#" PRIx32 " (offset: %#6" PRIx64 ") -> %#" PRIx32
7705 " fde=[%6" PRIx64 "]\n",
7706 initial_location, initial_offset,
7707 address, address - (eh_frame_ptr + 4));
7710 while (0 && readp < dataend)
7717 /* Print the content of the exception handling table section
7720 print_debug_exception_table (Dwfl_Module *dwflmod __attribute__ ((unused)),
7721 Ebl *ebl __attribute__ ((unused)),
7722 GElf_Ehdr *ehdr __attribute__ ((unused)),
7724 GElf_Shdr *shdr __attribute__ ((unused)),
7725 Dwarf *dbg __attribute__ ((unused)))
7728 \nException handling table section [%2zu] '.gcc_except_table':\n"),
7731 Elf_Data *data = elf_rawdata (scn, NULL);
7733 if (unlikely (data == NULL))
7735 error (0, 0, gettext ("cannot get %s content: %s"),
7736 ".gcc_except_table", elf_errmsg (-1));
7740 const unsigned char *readp = data->d_buf;
7741 const unsigned char *const dataend = readp + data->d_size;
7743 if (unlikely (readp + 1 > dataend))
7746 error (0, 0, gettext ("invalid data"));
7749 unsigned int lpstart_encoding = *readp++;
7750 printf (gettext (" LPStart encoding: %#x "), lpstart_encoding);
7751 print_encoding_base ("", lpstart_encoding);
7752 if (lpstart_encoding != DW_EH_PE_omit)
7755 readp = read_encoded (lpstart_encoding, readp, dataend, &lpstart, dbg);
7756 printf (" LPStart: %#" PRIx64 "\n", lpstart);
7759 if (unlikely (readp + 1 > dataend))
7761 unsigned int ttype_encoding = *readp++;
7762 printf (gettext (" TType encoding: %#x "), ttype_encoding);
7763 print_encoding_base ("", ttype_encoding);
7764 const unsigned char *ttype_base = NULL;
7765 if (ttype_encoding != DW_EH_PE_omit)
7767 unsigned int ttype_base_offset;
7768 get_uleb128 (ttype_base_offset, readp, dataend);
7769 printf (" TType base offset: %#x\n", ttype_base_offset);
7770 if ((size_t) (dataend - readp) > ttype_base_offset)
7771 ttype_base = readp + ttype_base_offset;
7774 if (unlikely (readp + 1 > dataend))
7776 unsigned int call_site_encoding = *readp++;
7777 printf (gettext (" Call site encoding: %#x "), call_site_encoding);
7778 print_encoding_base ("", call_site_encoding);
7779 unsigned int call_site_table_len;
7780 get_uleb128 (call_site_table_len, readp, dataend);
7782 const unsigned char *const action_table = readp + call_site_table_len;
7783 if (unlikely (action_table > dataend))
7786 unsigned int max_action = 0;
7787 while (readp < action_table)
7790 puts (gettext ("\n Call site table:"));
7792 uint64_t call_site_start;
7793 readp = read_encoded (call_site_encoding, readp, dataend,
7794 &call_site_start, dbg);
7795 uint64_t call_site_length;
7796 readp = read_encoded (call_site_encoding, readp, dataend,
7797 &call_site_length, dbg);
7798 uint64_t landing_pad;
7799 readp = read_encoded (call_site_encoding, readp, dataend,
7801 unsigned int action;
7802 get_uleb128 (action, readp, dataend);
7803 max_action = MAX (action, max_action);
7804 printf (gettext (" [%4u] Call site start: %#" PRIx64 "\n"
7805 " Call site length: %" PRIu64 "\n"
7806 " Landing pad: %#" PRIx64 "\n"
7808 u++, call_site_start, call_site_length, landing_pad, action);
7810 if (readp != action_table)
7813 unsigned int max_ar_filter = 0;
7816 puts ("\n Action table:");
7818 if ((size_t) (dataend - action_table) < max_action + 1)
7820 fputs (gettext (" <INVALID DATA>\n"), stdout);
7824 const unsigned char *const action_table_end
7825 = action_table + max_action + 1;
7831 get_sleb128 (ar_filter, readp, action_table_end);
7832 if (ar_filter > 0 && (unsigned int) ar_filter > max_ar_filter)
7833 max_ar_filter = ar_filter;
7835 get_sleb128 (ar_disp, readp, action_table_end);
7837 printf (" [%4u] ar_filter: % d\n"
7839 u, ar_filter, ar_disp);
7840 if (abs (ar_disp) & 1)
7841 printf (" -> [%4u]\n", u + (ar_disp + 1) / 2);
7842 else if (ar_disp != 0)
7845 putchar_unlocked ('\n');
7848 while (readp < action_table_end);
7851 if (max_ar_filter > 0 && ttype_base != NULL)
7853 puts ("\n TType table:");
7855 // XXX Not *4, size of encoding;
7856 switch (ttype_encoding & 7)
7858 case DW_EH_PE_udata2:
7859 case DW_EH_PE_sdata2:
7860 readp = ttype_base - max_ar_filter * 2;
7862 case DW_EH_PE_udata4:
7863 case DW_EH_PE_sdata4:
7864 readp = ttype_base - max_ar_filter * 4;
7866 case DW_EH_PE_udata8:
7867 case DW_EH_PE_sdata8:
7868 readp = ttype_base - max_ar_filter * 8;
7871 error (1, 0, gettext ("invalid TType encoding"));
7877 readp = read_encoded (ttype_encoding, readp, ttype_base, &ttype,
7879 printf (" [%4u] %#" PRIx64 "\n", max_ar_filter--, ttype);
7881 while (readp < ttype_base);
7885 /* Print the content of the '.gdb_index' section.
7886 http://sourceware.org/gdb/current/onlinedocs/gdb/Index-Section-Format.html
7889 print_gdb_index_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
7890 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
7892 printf (gettext ("\nGDB section [%2zu] '%s' at offset %#" PRIx64
7893 " contains %" PRId64 " bytes :\n"),
7894 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
7895 (uint64_t) shdr->sh_offset, (uint64_t) shdr->sh_size);
7897 Elf_Data *data = elf_rawdata (scn, NULL);
7899 if (unlikely (data == NULL))
7901 error (0, 0, gettext ("cannot get %s content: %s"),
7902 ".gdb_index", elf_errmsg (-1));
7906 // .gdb_index is always in little endian.
7907 Dwarf dummy_dbg = { .other_byte_order = MY_ELFDATA != ELFDATA2LSB };
7910 const unsigned char *readp = data->d_buf;
7911 const unsigned char *const dataend = readp + data->d_size;
7913 if (unlikely (readp + 4 > dataend))
7916 error (0, 0, gettext ("invalid data"));
7920 int32_t vers = read_4ubyte_unaligned (dbg, readp);
7921 printf (gettext (" Version: %" PRId32 "\n"), vers);
7923 // The only difference between version 4 and version 5 is the
7924 // hash used for generating the table. Version 6 contains symbols
7925 // for inlined functions, older versions didn't. Version 7 adds
7926 // symbol kinds. Version 8 just indicates that it correctly includes
7928 if (vers < 4 || vers > 8)
7930 printf (gettext (" unknown version, cannot parse section\n"));
7935 if (unlikely (readp + 4 > dataend))
7938 uint32_t cu_off = read_4ubyte_unaligned (dbg, readp);
7939 printf (gettext (" CU offset: %#" PRIx32 "\n"), cu_off);
7942 if (unlikely (readp + 4 > dataend))
7945 uint32_t tu_off = read_4ubyte_unaligned (dbg, readp);
7946 printf (gettext (" TU offset: %#" PRIx32 "\n"), tu_off);
7949 if (unlikely (readp + 4 > dataend))
7952 uint32_t addr_off = read_4ubyte_unaligned (dbg, readp);
7953 printf (gettext (" address offset: %#" PRIx32 "\n"), addr_off);
7956 if (unlikely (readp + 4 > dataend))
7959 uint32_t sym_off = read_4ubyte_unaligned (dbg, readp);
7960 printf (gettext (" symbol offset: %#" PRIx32 "\n"), sym_off);
7963 if (unlikely (readp + 4 > dataend))
7966 uint32_t const_off = read_4ubyte_unaligned (dbg, readp);
7967 printf (gettext (" constant offset: %#" PRIx32 "\n"), const_off);
7969 readp = data->d_buf + cu_off;
7971 const unsigned char *nextp = data->d_buf + tu_off;
7972 size_t cu_nr = (nextp - readp) / 16;
7974 printf (gettext ("\n CU list at offset %#" PRIx32
7975 " contains %zu entries:\n"),
7979 while (readp + 16 <= dataend && n < cu_nr)
7981 uint64_t off = read_8ubyte_unaligned (dbg, readp);
7984 uint64_t len = read_8ubyte_unaligned (dbg, readp);
7987 printf (" [%4zu] start: %0#8" PRIx64
7988 ", length: %5" PRIu64 "\n", n, off, len);
7992 readp = data->d_buf + tu_off;
7993 nextp = data->d_buf + addr_off;
7994 size_t tu_nr = (nextp - readp) / 24;
7996 printf (gettext ("\n TU list at offset %#" PRIx32
7997 " contains %zu entries:\n"),
8001 while (readp + 24 <= dataend && n < tu_nr)
8003 uint64_t off = read_8ubyte_unaligned (dbg, readp);
8006 uint64_t type = read_8ubyte_unaligned (dbg, readp);
8009 uint64_t sig = read_8ubyte_unaligned (dbg, readp);
8012 printf (" [%4zu] CU offset: %5" PRId64
8013 ", type offset: %5" PRId64
8014 ", signature: %0#8" PRIx64 "\n", n, off, type, sig);
8018 readp = data->d_buf + addr_off;
8019 nextp = data->d_buf + sym_off;
8020 size_t addr_nr = (nextp - readp) / 20;
8022 printf (gettext ("\n Address list at offset %#" PRIx32
8023 " contains %zu entries:\n"),
8027 while (readp + 20 <= dataend && n < addr_nr)
8029 uint64_t low = read_8ubyte_unaligned (dbg, readp);
8032 uint64_t high = read_8ubyte_unaligned (dbg, readp);
8035 uint32_t idx = read_4ubyte_unaligned (dbg, readp);
8038 char *l = format_dwarf_addr (dwflmod, 8, low, low);
8039 char *h = format_dwarf_addr (dwflmod, 8, high - 1, high);
8040 printf (" [%4zu] %s..%s, CU index: %5" PRId32 "\n",
8047 readp = data->d_buf + sym_off;
8048 nextp = data->d_buf + const_off;
8049 size_t sym_nr = (nextp - readp) / 8;
8051 printf (gettext ("\n Symbol table at offset %#" PRIx32
8052 " contains %zu slots:\n"),
8056 while (readp + 8 <= dataend && n < sym_nr)
8058 uint32_t name = read_4ubyte_unaligned (dbg, readp);
8061 uint32_t vector = read_4ubyte_unaligned (dbg, readp);
8064 if (name != 0 || vector != 0)
8066 const unsigned char *sym = data->d_buf + const_off + name;
8067 if (unlikely (sym > dataend
8068 || memchr (sym, '\0', dataend - sym) == NULL))
8071 printf (" [%4zu] symbol: %s, CUs: ", n, sym);
8073 const unsigned char *readcus = data->d_buf + const_off + vector;
8074 if (unlikely (readcus + 4 > dataend))
8076 uint32_t cus = read_4ubyte_unaligned (dbg, readcus);
8079 uint32_t cu_kind, cu, kind;
8082 if (unlikely (readcus + 4 > dataend))
8084 cu_kind = read_4ubyte_unaligned (dbg, readcus);
8085 cu = cu_kind & ((1 << 24) - 1);
8086 kind = (cu_kind >> 28) & 7;
8087 is_static = cu_kind & (1U << 31);
8089 printf ("%" PRId32 "T", cu - (uint32_t) cu_nr);
8091 printf ("%" PRId32, cu);
8110 printf ("unknown-0x%" PRIx32, kind);
8113 printf (":%c)", (is_static ? 'S' : 'G'));
8125 print_debug (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr)
8127 /* Before we start the real work get a debug context descriptor. */
8129 Dwarf *dbg = dwfl_module_getdwarf (dwflmod, &dwbias);
8133 .other_byte_order = MY_ELFDATA != ehdr->e_ident[EI_DATA]
8137 if ((print_debug_sections & ~section_exception) != 0)
8138 error (0, 0, gettext ("cannot get debug context descriptor: %s"),
8140 if ((print_debug_sections & section_exception) == 0)
8145 /* Get the section header string table index. */
8147 if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0))
8148 error (EXIT_FAILURE, 0,
8149 gettext ("cannot get section header string table index"));
8151 /* Look through all the sections for the debugging sections to print. */
8152 Elf_Scn *scn = NULL;
8153 while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
8156 GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
8158 if (shdr != NULL && shdr->sh_type == SHT_PROGBITS)
8163 enum section_e bitmask;
8164 void (*fp) (Dwfl_Module *, Ebl *,
8165 GElf_Ehdr *, Elf_Scn *, GElf_Shdr *, Dwarf *);
8166 } debug_sections[] =
8168 #define NEW_SECTION(name) \
8169 { ".debug_" #name, section_##name, print_debug_##name##_section }
8170 NEW_SECTION (abbrev),
8171 NEW_SECTION (aranges),
8172 NEW_SECTION (frame),
8174 NEW_SECTION (types),
8177 NEW_SECTION (pubnames),
8179 NEW_SECTION (macinfo),
8180 NEW_SECTION (macro),
8181 NEW_SECTION (ranges),
8182 { ".eh_frame", section_frame | section_exception,
8183 print_debug_frame_section },
8184 { ".eh_frame_hdr", section_frame | section_exception,
8185 print_debug_frame_hdr_section },
8186 { ".gcc_except_table", section_frame | section_exception,
8187 print_debug_exception_table },
8188 { ".gdb_index", section_gdb_index, print_gdb_index_section }
8190 const int ndebug_sections = (sizeof (debug_sections)
8191 / sizeof (debug_sections[0]));
8192 const char *name = elf_strptr (ebl->elf, shstrndx,
8198 for (n = 0; n < ndebug_sections; ++n)
8199 if (strcmp (name, debug_sections[n].name) == 0
8201 || (name[0] == '.' && name[1] == 'z'
8202 && debug_sections[n].name[1] == 'd'
8203 && strcmp (&name[2], &debug_sections[n].name[1]) == 0)
8207 if ((print_debug_sections | implicit_debug_sections)
8208 & debug_sections[n].bitmask)
8209 debug_sections[n].fp (dwflmod, ebl, ehdr, scn, shdr, dbg);
8215 reset_listptr (&known_loclistptr);
8216 reset_listptr (&known_rangelistptr);
8220 #define ITEM_INDENT 4
8221 #define WRAP_COLUMN 75
8223 /* Print "NAME: FORMAT", wrapping when output text would make the line
8224 exceed WRAP_COLUMN. Unpadded numbers look better for the core items
8225 but this function is also used for registers which should be printed
8226 aligned. Fortunately registers output uses fixed fields width (such
8227 as %11d) for the alignment.
8229 Line breaks should not depend on the particular values although that
8230 may happen in some cases of the core items. */
8233 __attribute__ ((format (printf, 6, 7)))
8234 print_core_item (unsigned int colno, char sep, unsigned int wrap,
8235 size_t name_width, const char *name, const char *format, ...)
8237 size_t len = strlen (name);
8238 if (name_width < len)
8243 va_start (ap, format);
8244 int out_len = vasprintf (&out, format, ap);
8247 error (EXIT_FAILURE, 0, _("memory exhausted"));
8249 size_t n = name_width + sizeof ": " - 1 + out_len;
8253 printf ("%*s", ITEM_INDENT, "");
8254 colno = ITEM_INDENT + n;
8256 else if (colno + 2 + n < wrap)
8258 printf ("%c ", sep);
8263 printf ("\n%*s", ITEM_INDENT, "");
8264 colno = ITEM_INDENT + n;
8267 printf ("%s: %*s%s", name, (int) (name_width - len), "", out);
8275 convert (Elf *core, Elf_Type type, uint_fast16_t count,
8276 void *value, const void *data, size_t size)
8278 Elf_Data valuedata =
8282 .d_size = size ?: gelf_fsize (core, type, count, EV_CURRENT),
8283 .d_version = EV_CURRENT,
8288 .d_buf = (void *) data,
8289 .d_size = valuedata.d_size,
8290 .d_version = EV_CURRENT,
8293 Elf_Data *d = (gelf_getclass (core) == ELFCLASS32
8294 ? elf32_xlatetom : elf64_xlatetom)
8295 (&valuedata, &indata, elf_getident (core, NULL)[EI_DATA]);
8297 error (EXIT_FAILURE, 0,
8298 gettext ("cannot convert core note data: %s"), elf_errmsg (-1));
8300 return data + indata.d_size;
8303 typedef uint8_t GElf_Byte;
8306 handle_core_item (Elf *core, const Ebl_Core_Item *item, const void *desc,
8307 unsigned int colno, size_t *repeated_size)
8309 uint_fast16_t count = item->count ?: 1;
8312 DO_TYPE (BYTE, Byte, "0x%.2" PRIx8, "%" PRId8); \
8313 DO_TYPE (HALF, Half, "0x%.4" PRIx16, "%" PRId16); \
8314 DO_TYPE (WORD, Word, "0x%.8" PRIx32, "%" PRId32); \
8315 DO_TYPE (SWORD, Sword, "%" PRId32, "%" PRId32); \
8316 DO_TYPE (XWORD, Xword, "0x%.16" PRIx64, "%" PRId64); \
8317 DO_TYPE (SXWORD, Sxword, "%" PRId64, "%" PRId64)
8319 #define DO_TYPE(NAME, Name, hex, dec) GElf_##Name Name[count]
8320 union { TYPES; } value;
8323 void *data = &value;
8324 size_t size = gelf_fsize (core, item->type, count, EV_CURRENT);
8325 size_t convsize = size;
8326 if (repeated_size != NULL)
8328 if (*repeated_size > size && (item->format == 'b' || item->format == 'B'))
8330 data = alloca (*repeated_size);
8331 count *= *repeated_size / size;
8332 convsize = count * size;
8333 *repeated_size -= convsize;
8335 else if (item->count != 0 || item->format != '\n')
8336 *repeated_size -= size;
8339 convert (core, item->type, count, data, desc + item->offset, convsize);
8341 Elf_Type type = item->type;
8342 if (type == ELF_T_ADDR)
8343 type = gelf_getclass (core) == ELFCLASS32 ? ELF_T_WORD : ELF_T_XWORD;
8345 switch (item->format)
8348 assert (count == 1);
8351 #define DO_TYPE(NAME, Name, hex, dec) \
8352 case ELF_T_##NAME: \
8353 colno = print_core_item (colno, ',', WRAP_COLUMN, \
8354 0, item->name, dec, value.Name[0]); \
8364 assert (count == 1);
8367 #define DO_TYPE(NAME, Name, hex, dec) \
8368 case ELF_T_##NAME: \
8369 colno = print_core_item (colno, ',', WRAP_COLUMN, \
8370 0, item->name, hex, value.Name[0]); \
8381 assert (size % sizeof (unsigned int) == 0);
8382 unsigned int nbits = count * size * 8;
8383 unsigned int pop = 0;
8384 for (const unsigned int *i = data; (void *) i < data + count * size; ++i)
8385 pop += __builtin_popcount (*i);
8386 bool negate = pop > nbits / 2;
8387 const unsigned int bias = item->format == 'b';
8390 char printed[(negate ? nbits - pop : pop) * 16 + 1];
8394 if (BYTE_ORDER != LITTLE_ENDIAN && size > sizeof (unsigned int))
8396 assert (size == sizeof (unsigned int) * 2);
8397 for (unsigned int *i = data;
8398 (void *) i < data + count * size; i += 2)
8400 unsigned int w = i[1];
8406 unsigned int lastbit = 0;
8407 unsigned int run = 0;
8408 for (const unsigned int *i = data;
8409 (void *) i < data + count * size; ++i)
8411 unsigned int bit = ((void *) i - data) * 8;
8412 unsigned int w = negate ? ~*i : *i;
8419 if (lastbit != 0 && lastbit + 1 == bit)
8424 p += sprintf (p, "%u", bit - bias);
8426 p += sprintf (p, ",%u", bit - bias);
8428 p += sprintf (p, "-%u,%u", lastbit - bias, bit - bias);
8435 if (lastbit > 0 && run > 0 && lastbit + 1 != nbits)
8436 p += sprintf (p, "-%u", lastbit - bias);
8438 colno = print_core_item (colno, ',', WRAP_COLUMN, 0, item->name,
8439 negate ? "~<%s>" : "<%s>", printed);
8444 case (char) ('T'|0x80):
8445 assert (count == 2);
8450 #define DO_TYPE(NAME, Name, hex, dec) \
8451 case ELF_T_##NAME: \
8452 sec = value.Name[0]; \
8453 usec = value.Name[1]; \
8460 if (unlikely (item->format == (char) ('T'|0x80)))
8462 /* This is a hack for an ill-considered 64-bit ABI where
8463 tv_usec is actually a 32-bit field with 32 bits of padding
8464 rounding out struct timeval. We've already converted it as
8465 a 64-bit field. For little-endian, this just means the
8466 high half is the padding; it's presumably zero, but should
8467 be ignored anyway. For big-endian, it means the 32-bit
8468 field went into the high half of USEC. */
8470 GElf_Ehdr *ehdr = gelf_getehdr (core, &ehdr_mem);
8471 if (likely (ehdr->e_ident[EI_DATA] == ELFDATA2MSB))
8476 colno = print_core_item (colno, ',', WRAP_COLUMN, 0, item->name,
8477 "%" PRIu64 ".%.6" PRIu64, sec, usec);
8481 assert (count == 1);
8482 colno = print_core_item (colno, ',', WRAP_COLUMN, 0, item->name,
8483 "%c", value.Byte[0]);
8487 colno = print_core_item (colno, ',', WRAP_COLUMN, 0, item->name,
8488 "%.*s", (int) count, value.Byte);
8492 /* This is a list of strings separated by '\n'. */
8493 assert (item->count == 0);
8494 assert (repeated_size != NULL);
8495 assert (item->name == NULL);
8496 if (unlikely (item->offset >= *repeated_size))
8499 const char *s = desc + item->offset;
8500 size = *repeated_size - item->offset;
8504 const char *eol = memchr (s, '\n', size);
8508 printf ("%*s%.*s\n", ITEM_INDENT, "", len, s);
8511 size -= eol + 1 - s;
8515 colno = WRAP_COLUMN;
8522 error (0, 0, "XXX not handling format '%c' for %s",
8523 item->format, item->name);
8533 /* Sort items by group, and by layout offset within each group. */
8535 compare_core_items (const void *a, const void *b)
8537 const Ebl_Core_Item *const *p1 = a;
8538 const Ebl_Core_Item *const *p2 = b;
8539 const Ebl_Core_Item *item1 = *p1;
8540 const Ebl_Core_Item *item2 = *p2;
8542 return ((item1->group == item2->group ? 0
8543 : strcmp (item1->group, item2->group))
8544 ?: (int) item1->offset - (int) item2->offset);
8547 /* Sort item groups by layout offset of the first item in the group. */
8549 compare_core_item_groups (const void *a, const void *b)
8551 const Ebl_Core_Item *const *const *p1 = a;
8552 const Ebl_Core_Item *const *const *p2 = b;
8553 const Ebl_Core_Item *const *group1 = *p1;
8554 const Ebl_Core_Item *const *group2 = *p2;
8555 const Ebl_Core_Item *item1 = *group1;
8556 const Ebl_Core_Item *item2 = *group2;
8558 return (int) item1->offset - (int) item2->offset;
8562 handle_core_items (Elf *core, const void *desc, size_t descsz,
8563 const Ebl_Core_Item *items, size_t nitems)
8567 unsigned int colno = 0;
8569 /* FORMAT '\n' makes sense to be present only as a single item as it
8570 processes all the data of a note. FORMATs 'b' and 'B' have a special case
8571 if present as a single item but they can be also processed with other
8573 if (nitems == 1 && (items[0].format == '\n' || items[0].format == 'b'
8574 || items[0].format == 'B'))
8576 assert (items[0].offset == 0);
8577 size_t size = descsz;
8578 colno = handle_core_item (core, items, desc, colno, &size);
8579 /* If SIZE is not zero here there is some remaining data. But we do not
8580 know how to process it anyway. */
8583 for (size_t i = 0; i < nitems; ++i)
8584 assert (items[i].format != '\n');
8586 /* Sort to collect the groups together. */
8587 const Ebl_Core_Item *sorted_items[nitems];
8588 for (size_t i = 0; i < nitems; ++i)
8589 sorted_items[i] = &items[i];
8590 qsort (sorted_items, nitems, sizeof sorted_items[0], &compare_core_items);
8592 /* Collect the unique groups and sort them. */
8593 const Ebl_Core_Item **groups[nitems];
8594 groups[0] = &sorted_items[0];
8596 for (size_t i = 1; i < nitems; ++i)
8597 if (sorted_items[i]->group != sorted_items[i - 1]->group
8598 && strcmp (sorted_items[i]->group, sorted_items[i - 1]->group))
8599 groups[ngroups++] = &sorted_items[i];
8600 qsort (groups, ngroups, sizeof groups[0], &compare_core_item_groups);
8602 /* Write out all the groups. */
8603 const void *last = desc;
8606 for (size_t i = 0; i < ngroups; ++i)
8608 for (const Ebl_Core_Item **item = groups[i];
8609 (item < &sorted_items[nitems]
8610 && ((*item)->group == groups[i][0]->group
8611 || !strcmp ((*item)->group, groups[i][0]->group)));
8613 colno = handle_core_item (core, *item, desc, colno, NULL);
8615 /* Force a line break at the end of the group. */
8616 colno = WRAP_COLUMN;
8622 /* This set of items consumed a certain amount of the note's data.
8623 If there is more data there, we have another unit of the same size.
8624 Loop to print that out too. */
8625 const Ebl_Core_Item *item = &items[nitems - 1];
8626 size_t eltsz = item->offset + gelf_fsize (core, item->type,
8627 item->count ?: 1, EV_CURRENT);
8636 while (descsz >= eltsz && !memcmp (desc, last, eltsz));
8640 /* For just one repeat, print it unabridged twice. */
8645 printf (gettext ("\n%*s... <repeats %u more times> ..."),
8646 ITEM_INDENT, "", reps);
8656 handle_bit_registers (const Ebl_Register_Location *regloc, const void *desc,
8659 desc += regloc->offset;
8667 handle_core_register (Ebl *ebl, Elf *core, int maxregname,
8668 const Ebl_Register_Location *regloc, const void *desc,
8671 if (regloc->bits % 8 != 0)
8672 return handle_bit_registers (regloc, desc, colno);
8674 desc += regloc->offset;
8676 for (int reg = regloc->regno; reg < regloc->regno + regloc->count; ++reg)
8678 char name[REGNAMESZ];
8681 register_info (ebl, reg, regloc, name, &bits, &type);
8684 BITS (8, BYTE, "%4" PRId8, "0x%.2" PRIx8); \
8685 BITS (16, HALF, "%6" PRId16, "0x%.4" PRIx16); \
8686 BITS (32, WORD, "%11" PRId32, " 0x%.8" PRIx32); \
8687 BITS (64, XWORD, "%20" PRId64, " 0x%.16" PRIx64)
8689 #define BITS(bits, xtype, sfmt, ufmt) \
8690 uint##bits##_t b##bits; int##bits##_t b##bits##s
8691 union { TYPES; uint64_t b128[2]; } value;
8696 case DW_ATE_unsigned:
8698 case DW_ATE_address:
8701 #define BITS(bits, xtype, sfmt, ufmt) \
8703 desc = convert (core, ELF_T_##xtype, 1, &value, desc, 0); \
8704 if (type == DW_ATE_signed) \
8705 colno = print_core_item (colno, ' ', WRAP_COLUMN, \
8707 sfmt, value.b##bits##s); \
8709 colno = print_core_item (colno, ' ', WRAP_COLUMN, \
8711 ufmt, value.b##bits); \
8717 assert (type == DW_ATE_unsigned);
8718 desc = convert (core, ELF_T_XWORD, 2, &value, desc, 0);
8719 int be = elf_getident (core, NULL)[EI_DATA] == ELFDATA2MSB;
8720 colno = print_core_item (colno, ' ', WRAP_COLUMN,
8722 "0x%.16" PRIx64 "%.16" PRIx64,
8723 value.b128[!be], value.b128[be]);
8733 /* Print each byte in hex, the whole thing in native byte order. */
8734 assert (bits % 8 == 0);
8735 const uint8_t *bytes = desc;
8737 char hex[bits / 4 + 1];
8738 hex[bits / 4] = '\0';
8740 if (elf_getident (core, NULL)[EI_DATA] == ELFDATA2LSB)
8742 bytes += bits / 8 - 1;
8746 for (char *h = hex; bits > 0; bits -= 8, idx += incr)
8748 *h++ = "0123456789abcdef"[bytes[idx] >> 4];
8749 *h++ = "0123456789abcdef"[bytes[idx] & 0xf];
8751 colno = print_core_item (colno, ' ', WRAP_COLUMN,
8752 maxregname, name, "0x%s", hex);
8755 desc += regloc->pad;
8764 struct register_info
8766 const Ebl_Register_Location *regloc;
8768 char name[REGNAMESZ];
8775 register_bitpos (const struct register_info *r)
8777 return (r->regloc->offset * 8
8778 + ((r->regno - r->regloc->regno)
8779 * (r->regloc->bits + r->regloc->pad * 8)));
8783 compare_sets_by_info (const struct register_info *r1,
8784 const struct register_info *r2)
8786 return ((int) r2->bits - (int) r1->bits
8787 ?: register_bitpos (r1) - register_bitpos (r2));
8790 /* Sort registers by set, and by size and layout offset within each set. */
8792 compare_registers (const void *a, const void *b)
8794 const struct register_info *r1 = a;
8795 const struct register_info *r2 = b;
8797 /* Unused elements sort last. */
8798 if (r1->regloc == NULL)
8799 return r2->regloc == NULL ? 0 : 1;
8800 if (r2->regloc == NULL)
8803 return ((r1->set == r2->set ? 0 : strcmp (r1->set, r2->set))
8804 ?: compare_sets_by_info (r1, r2));
8807 /* Sort register sets by layout offset of the first register in the set. */
8809 compare_register_sets (const void *a, const void *b)
8811 const struct register_info *const *p1 = a;
8812 const struct register_info *const *p2 = b;
8813 return compare_sets_by_info (*p1, *p2);
8817 handle_core_registers (Ebl *ebl, Elf *core, const void *desc,
8818 const Ebl_Register_Location *reglocs, size_t nregloc)
8823 ssize_t maxnreg = ebl_register_info (ebl, 0, NULL, 0, NULL, NULL, NULL, NULL);
8826 for (size_t i = 0; i < nregloc; ++i)
8827 if (maxnreg < reglocs[i].regno + reglocs[i].count)
8828 maxnreg = reglocs[i].regno + reglocs[i].count;
8829 assert (maxnreg > 0);
8832 struct register_info regs[maxnreg];
8833 memset (regs, 0, sizeof regs);
8835 /* Sort to collect the sets together. */
8837 for (size_t i = 0; i < nregloc; ++i)
8838 for (int reg = reglocs[i].regno;
8839 reg < reglocs[i].regno + reglocs[i].count;
8842 assert (reg < maxnreg);
8845 struct register_info *info = ®s[reg];
8846 info->regloc = ®locs[i];
8848 info->set = register_info (ebl, reg, ®locs[i],
8849 info->name, &info->bits, &info->type);
8851 qsort (regs, maxreg + 1, sizeof regs[0], &compare_registers);
8853 /* Collect the unique sets and sort them. */
8854 inline bool same_set (const struct register_info *a,
8855 const struct register_info *b)
8857 return (a < ®s[maxnreg] && a->regloc != NULL
8858 && b < ®s[maxnreg] && b->regloc != NULL
8859 && a->bits == b->bits
8860 && (a->set == b->set || !strcmp (a->set, b->set)));
8862 struct register_info *sets[maxreg + 1];
8865 for (int i = 1; i <= maxreg; ++i)
8866 if (regs[i].regloc != NULL && !same_set (®s[i], ®s[i - 1]))
8867 sets[nsets++] = ®s[i];
8868 qsort (sets, nsets, sizeof sets[0], &compare_register_sets);
8870 /* Write out all the sets. */
8871 unsigned int colno = 0;
8872 for (size_t i = 0; i < nsets; ++i)
8874 /* Find the longest name of a register in this set. */
8876 const struct register_info *end;
8877 for (end = sets[i]; same_set (sets[i], end); ++end)
8879 size_t len = strlen (end->name);
8884 for (const struct register_info *reg = sets[i];
8886 reg += reg->regloc->count ?: 1)
8887 colno = handle_core_register (ebl, core, maxname,
8888 reg->regloc, desc, colno);
8890 /* Force a line break at the end of the group. */
8891 colno = WRAP_COLUMN;
8898 handle_auxv_note (Ebl *ebl, Elf *core, GElf_Word descsz, GElf_Off desc_pos)
8900 Elf_Data *data = elf_getdata_rawchunk (core, desc_pos, descsz, ELF_T_AUXV);
8903 error (EXIT_FAILURE, 0,
8904 gettext ("cannot convert core note data: %s"), elf_errmsg (-1));
8906 const size_t nauxv = descsz / gelf_fsize (core, ELF_T_AUXV, 1, EV_CURRENT);
8907 for (size_t i = 0; i < nauxv; ++i)
8910 GElf_auxv_t *av = gelf_getauxv (data, i, &av_mem);
8916 if (ebl_auxv_info (ebl, av->a_type, &name, &fmt) == 0)
8919 if (av->a_un.a_val == 0)
8920 printf (" %" PRIu64 "\n", av->a_type);
8922 printf (" %" PRIu64 ": %#" PRIx64 "\n",
8923 av->a_type, av->a_un.a_val);
8928 case '\0': /* Normally zero. */
8929 if (av->a_un.a_val == 0)
8931 printf (" %s\n", name);
8936 case 'p': /* address */
8937 case 's': /* address of string */
8938 printf (" %s: %#" PRIx64 "\n", name, av->a_un.a_val);
8941 printf (" %s: %" PRIu64 "\n", name, av->a_un.a_val);
8944 printf (" %s: %" PRId64 "\n", name, av->a_un.a_val);
8948 printf (" %s: %#" PRIx64 " ", name, av->a_un.a_val);
8950 const char *pfx = "<";
8951 for (const char *p = fmt + 1; *p != 0; p = strchr (p, '\0') + 1)
8953 if (av->a_un.a_val & bit)
8955 printf ("%s%s", pfx, p);
8970 buf_has_data (unsigned char const *ptr, unsigned char const *end, size_t sz)
8972 return ptr < end && (size_t) (end - ptr) >= sz;
8976 buf_read_int (Elf *core, unsigned char const **ptrp, unsigned char const *end,
8979 if (! buf_has_data (*ptrp, end, 4))
8982 *ptrp = convert (core, ELF_T_WORD, 1, retp, *ptrp, 4);
8987 buf_read_ulong (Elf *core, unsigned char const **ptrp, unsigned char const *end,
8990 size_t sz = gelf_fsize (core, ELF_T_ADDR, 1, EV_CURRENT);
8991 if (! buf_has_data (*ptrp, end, sz))
9000 *ptrp = convert (core, ELF_T_ADDR, 1, &u, *ptrp, sz);
9010 handle_siginfo_note (Elf *core, GElf_Word descsz, GElf_Off desc_pos)
9012 Elf_Data *data = elf_getdata_rawchunk (core, desc_pos, descsz, ELF_T_BYTE);
9014 error (EXIT_FAILURE, 0,
9015 gettext ("cannot convert core note data: %s"), elf_errmsg (-1));
9017 unsigned char const *ptr = data->d_buf;
9018 unsigned char const *const end = data->d_buf + data->d_size;
9020 /* Siginfo head is three ints: signal number, error number, origin
9022 int si_signo, si_errno, si_code;
9023 if (! buf_read_int (core, &ptr, end, &si_signo)
9024 || ! buf_read_int (core, &ptr, end, &si_errno)
9025 || ! buf_read_int (core, &ptr, end, &si_code))
9028 printf (" Not enough data in NT_SIGINFO note.\n");
9032 /* Next is a pointer-aligned union of structures. On 64-bit
9033 machines, that implies a word of padding. */
9034 if (gelf_getclass (core) == ELFCLASS64)
9037 printf (" si_signo: %d, si_errno: %d, si_code: %d\n",
9038 si_signo, si_errno, si_code);
9049 if (! buf_read_ulong (core, &ptr, end, &addr))
9051 printf (" fault address: %#" PRIx64 "\n", addr);
9057 else if (si_code == SI_USER)
9060 if (! buf_read_int (core, &ptr, end, &pid)
9061 || ! buf_read_int (core, &ptr, end, &uid))
9063 printf (" sender PID: %d, sender UID: %d\n", pid, uid);
9068 handle_file_note (Elf *core, GElf_Word descsz, GElf_Off desc_pos)
9070 Elf_Data *data = elf_getdata_rawchunk (core, desc_pos, descsz, ELF_T_BYTE);
9072 error (EXIT_FAILURE, 0,
9073 gettext ("cannot convert core note data: %s"), elf_errmsg (-1));
9075 unsigned char const *ptr = data->d_buf;
9076 unsigned char const *const end = data->d_buf + data->d_size;
9078 uint64_t count, page_size;
9079 if (! buf_read_ulong (core, &ptr, end, &count)
9080 || ! buf_read_ulong (core, &ptr, end, &page_size))
9083 printf (" Not enough data in NT_FILE note.\n");
9087 size_t addrsize = gelf_fsize (core, ELF_T_ADDR, 1, EV_CURRENT);
9088 uint64_t maxcount = (size_t) (end - ptr) / (3 * addrsize);
9089 if (count > maxcount)
9092 /* Where file names are stored. */
9093 unsigned char const *const fstart = ptr + 3 * count * addrsize;
9094 char const *fptr = (char *) fstart;
9096 printf (" %" PRId64 " files:\n", count);
9097 for (uint64_t i = 0; i < count; ++i)
9099 uint64_t mstart, mend, moffset;
9100 if (! buf_read_ulong (core, &ptr, fstart, &mstart)
9101 || ! buf_read_ulong (core, &ptr, fstart, &mend)
9102 || ! buf_read_ulong (core, &ptr, fstart, &moffset))
9105 const char *fnext = memchr (fptr, '\0', (char *) end - fptr);
9109 int ct = printf (" %08" PRIx64 "-%08" PRIx64
9110 " %08" PRIx64 " %" PRId64,
9111 mstart, mend, moffset * page_size, mend - mstart);
9112 printf ("%*s%s\n", ct > 50 ? 3 : 53 - ct, "", fptr);
9119 handle_core_note (Ebl *ebl, const GElf_Nhdr *nhdr,
9120 const char *name, const void *desc)
9122 GElf_Word regs_offset;
9124 const Ebl_Register_Location *reglocs;
9126 const Ebl_Core_Item *items;
9128 if (! ebl_core_note (ebl, nhdr, name,
9129 ®s_offset, &nregloc, ®locs, &nitems, &items))
9132 /* Pass 0 for DESCSZ when there are registers in the note,
9133 so that the ITEMS array does not describe the whole thing.
9134 For non-register notes, the actual descsz might be a multiple
9135 of the unit size, not just exactly the unit size. */
9136 unsigned int colno = handle_core_items (ebl->elf, desc,
9137 nregloc == 0 ? nhdr->n_descsz : 0,
9140 putchar_unlocked ('\n');
9142 colno = handle_core_registers (ebl, ebl->elf, desc + regs_offset,
9145 putchar_unlocked ('\n');
9149 handle_notes_data (Ebl *ebl, const GElf_Ehdr *ehdr,
9150 GElf_Off start, Elf_Data *data)
9152 fputs_unlocked (gettext (" Owner Data size Type\n"), stdout);
9161 while (offset < data->d_size
9162 && (offset = gelf_getnote (data, offset,
9163 &nhdr, &name_offset, &desc_offset)) > 0)
9165 const char *name = data->d_buf + name_offset;
9166 const char *desc = data->d_buf + desc_offset;
9170 printf (gettext (" %-13.*s %9" PRId32 " %s\n"),
9171 (int) nhdr.n_namesz, name, nhdr.n_descsz,
9172 ehdr->e_type == ET_CORE
9173 ? ebl_core_note_type_name (ebl, nhdr.n_type,
9175 : ebl_object_note_type_name (ebl, name, nhdr.n_type,
9176 buf2, sizeof (buf2)));
9178 /* Filter out invalid entries. */
9179 if (memchr (name, '\0', nhdr.n_namesz) != NULL
9180 /* XXX For now help broken Linux kernels. */
9183 if (ehdr->e_type == ET_CORE)
9185 if (nhdr.n_type == NT_AUXV
9186 && (nhdr.n_namesz == 4 /* Broken old Linux kernels. */
9187 || (nhdr.n_namesz == 5 && name[4] == '\0'))
9188 && !memcmp (name, "CORE", 4))
9189 handle_auxv_note (ebl, ebl->elf, nhdr.n_descsz,
9190 start + desc_offset);
9191 else if (nhdr.n_namesz == 5 && strcmp (name, "CORE") == 0)
9192 switch (nhdr.n_type)
9195 handle_siginfo_note (ebl->elf, nhdr.n_descsz,
9196 start + desc_offset);
9200 handle_file_note (ebl->elf, nhdr.n_descsz,
9201 start + desc_offset);
9205 handle_core_note (ebl, &nhdr, name, desc);
9208 handle_core_note (ebl, &nhdr, name, desc);
9211 ebl_object_note (ebl, name, nhdr.n_type, nhdr.n_descsz, desc);
9215 if (offset == data->d_size)
9219 error (EXIT_FAILURE, 0,
9220 gettext ("cannot get content of note section: %s"),
9225 handle_notes (Ebl *ebl, GElf_Ehdr *ehdr)
9227 /* If we have section headers, just look for SHT_NOTE sections.
9228 In a debuginfo file, the program headers are not reliable. */
9231 /* Get the section header string table index. */
9233 if (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0)
9234 error (EXIT_FAILURE, 0,
9235 gettext ("cannot get section header string table index"));
9237 Elf_Scn *scn = NULL;
9238 while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
9241 GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
9243 if (shdr == NULL || shdr->sh_type != SHT_NOTE)
9244 /* Not what we are looking for. */
9248 \nNote section [%2zu] '%s' of %" PRIu64 " bytes at offset %#0" PRIx64 ":\n"),
9250 elf_strptr (ebl->elf, shstrndx, shdr->sh_name),
9251 shdr->sh_size, shdr->sh_offset);
9253 handle_notes_data (ebl, ehdr, shdr->sh_offset,
9254 elf_getdata (scn, NULL));
9259 /* We have to look through the program header to find the note
9260 sections. There can be more than one. */
9261 for (size_t cnt = 0; cnt < phnum; ++cnt)
9264 GElf_Phdr *phdr = gelf_getphdr (ebl->elf, cnt, &mem);
9266 if (phdr == NULL || phdr->p_type != PT_NOTE)
9267 /* Not what we are looking for. */
9271 \nNote segment of %" PRIu64 " bytes at offset %#0" PRIx64 ":\n"),
9272 phdr->p_filesz, phdr->p_offset);
9274 handle_notes_data (ebl, ehdr, phdr->p_offset,
9275 elf_getdata_rawchunk (ebl->elf,
9276 phdr->p_offset, phdr->p_filesz,
9283 hex_dump (const uint8_t *data, size_t len)
9288 printf (" 0x%08Zx ", pos);
9290 const size_t chunk = MIN (len - pos, 16);
9292 for (size_t i = 0; i < chunk; ++i)
9294 printf ("%02x ", data[pos + i]);
9296 printf ("%02x", data[pos + i]);
9299 printf ("%*s", (int) ((16 - chunk) * 2 + (16 - chunk + 3) / 4), "");
9301 for (size_t i = 0; i < chunk; ++i)
9303 unsigned char b = data[pos + i];
9304 printf ("%c", isprint (b) ? b : '.');
9313 dump_data_section (Elf_Scn *scn, const GElf_Shdr *shdr, const char *name)
9315 if (shdr->sh_size == 0 || shdr->sh_type == SHT_NOBITS)
9316 printf (gettext ("\nSection [%Zu] '%s' has no data to dump.\n"),
9317 elf_ndxscn (scn), name);
9320 Elf_Data *data = elf_rawdata (scn, NULL);
9322 error (0, 0, gettext ("cannot get data for section [%Zu] '%s': %s"),
9323 elf_ndxscn (scn), name, elf_errmsg (-1));
9326 printf (gettext ("\nHex dump of section [%Zu] '%s', %" PRIu64
9327 " bytes at offset %#0" PRIx64 ":\n"),
9328 elf_ndxscn (scn), name,
9329 shdr->sh_size, shdr->sh_offset);
9330 hex_dump (data->d_buf, data->d_size);
9336 print_string_section (Elf_Scn *scn, const GElf_Shdr *shdr, const char *name)
9338 if (shdr->sh_size == 0 || shdr->sh_type == SHT_NOBITS)
9339 printf (gettext ("\nSection [%Zu] '%s' has no strings to dump.\n"),
9340 elf_ndxscn (scn), name);
9343 Elf_Data *data = elf_rawdata (scn, NULL);
9345 error (0, 0, gettext ("cannot get data for section [%Zu] '%s': %s"),
9346 elf_ndxscn (scn), name, elf_errmsg (-1));
9349 printf (gettext ("\nString section [%Zu] '%s' contains %" PRIu64
9350 " bytes at offset %#0" PRIx64 ":\n"),
9351 elf_ndxscn (scn), name,
9352 shdr->sh_size, shdr->sh_offset);
9354 const char *start = data->d_buf;
9355 const char *const limit = start + data->d_size;
9358 const char *end = memchr (start, '\0', limit - start);
9359 const size_t pos = start - (const char *) data->d_buf;
9360 if (unlikely (end == NULL))
9362 printf (" [%6Zx]- %.*s\n",
9363 pos, (int) (limit - start), start);
9366 printf (" [%6Zx] %s\n", pos, start);
9368 } while (start < limit);
9374 for_each_section_argument (Elf *elf, const struct section_argument *list,
9375 void (*dump) (Elf_Scn *scn, const GElf_Shdr *shdr,
9378 /* Get the section header string table index. */
9380 if (elf_getshdrstrndx (elf, &shstrndx) < 0)
9381 error (EXIT_FAILURE, 0,
9382 gettext ("cannot get section header string table index"));
9384 for (const struct section_argument *a = list; a != NULL; a = a->next)
9388 const char *name = NULL;
9391 unsigned long int shndx = strtoul (a->arg, &endp, 0);
9392 if (endp != a->arg && *endp == '\0')
9394 scn = elf_getscn (elf, shndx);
9397 error (0, 0, gettext ("\nsection [%lu] does not exist"), shndx);
9401 if (gelf_getshdr (scn, &shdr_mem) == NULL)
9402 error (EXIT_FAILURE, 0, gettext ("cannot get section header: %s"),
9404 name = elf_strptr (elf, shstrndx, shdr_mem.sh_name);
9408 /* Need to look up the section by name. */
9411 while ((scn = elf_nextscn (elf, scn)) != NULL)
9413 if (gelf_getshdr (scn, &shdr_mem) == NULL)
9415 name = elf_strptr (elf, shstrndx, shdr_mem.sh_name);
9418 if (!strcmp (name, a->arg))
9421 (*dump) (scn, &shdr_mem, name);
9425 if (unlikely (!found) && !a->implicit)
9426 error (0, 0, gettext ("\nsection '%s' does not exist"), a->arg);
9432 dump_data (Ebl *ebl)
9434 for_each_section_argument (ebl->elf, dump_data_sections, &dump_data_section);
9438 dump_strings (Ebl *ebl)
9440 for_each_section_argument (ebl->elf, string_sections, &print_string_section);
9444 print_strings (Ebl *ebl)
9446 /* Get the section header string table index. */
9448 if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0))
9449 error (EXIT_FAILURE, 0,
9450 gettext ("cannot get section header string table index"));
9456 while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
9458 if (gelf_getshdr (scn, &shdr_mem) == NULL)
9461 if (shdr_mem.sh_type != SHT_PROGBITS
9462 || !(shdr_mem.sh_flags & SHF_STRINGS))
9465 name = elf_strptr (ebl->elf, shstrndx, shdr_mem.sh_name);
9469 print_string_section (scn, &shdr_mem, name);
9474 dump_archive_index (Elf *elf, const char *fname)
9477 const Elf_Arsym *arsym = elf_getarsym (elf, &narsym);
9480 int result = elf_errno ();
9481 if (unlikely (result != ELF_E_NO_INDEX))
9482 error (EXIT_FAILURE, 0,
9483 gettext ("cannot get symbol index of archive '%s': %s"),
9484 fname, elf_errmsg (result));
9486 printf (gettext ("\nArchive '%s' has no symbol index\n"), fname);
9490 printf (gettext ("\nIndex of archive '%s' has %Zu entries:\n"),
9494 for (const Elf_Arsym *s = arsym; s < &arsym[narsym - 1]; ++s)
9496 if (s->as_off != as_off)
9501 if (unlikely (elf_rand (elf, as_off) == 0)
9502 || unlikely ((subelf = elf_begin (-1, ELF_C_READ_MMAP, elf))
9504 #if __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 7)
9507 error (EXIT_FAILURE, 0,
9508 gettext ("cannot extract member at offset %Zu in '%s': %s"),
9509 as_off, fname, elf_errmsg (-1));
9511 const Elf_Arhdr *h = elf_getarhdr (subelf);
9513 printf (gettext ("Archive member '%s' contains:\n"), h->ar_name);
9518 printf ("\t%s\n", s->as_name);
9522 #include "debugpred.h"