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;
4430 notice_listptr (enum section_e section, struct listptr_table *table,
4431 uint_fast8_t address_size, uint_fast8_t offset_size,
4432 struct Dwarf_CU *cu, Dwarf_Off offset)
4434 if (print_debug_sections & section)
4436 if (table->n == table->alloc)
4438 if (table->alloc == 0)
4442 table->table = xrealloc (table->table,
4443 table->alloc * sizeof table->table[0]);
4446 struct listptr *p = &table->table[table->n++];
4448 *p = (struct listptr)
4450 .addr64 = address_size == 8,
4451 .dwarf64 = offset_size == 8,
4455 assert (p->offset == offset);
4460 sort_listptr (struct listptr_table *table, const char *name)
4463 qsort_r (table->table, table->n, sizeof table->table[0],
4464 &compare_listptr, (void *) name);
4468 skip_listptr_hole (struct listptr_table *table, size_t *idxp,
4469 uint_fast8_t *address_sizep, uint_fast8_t *offset_sizep,
4470 Dwarf_Addr *base, struct Dwarf_CU **cu, ptrdiff_t offset,
4471 unsigned char **readp, unsigned char *endp)
4476 while (*idxp < table->n && table->table[*idxp].offset < (Dwarf_Off) offset)
4479 struct listptr *p = &table->table[*idxp];
4481 if (*idxp == table->n
4482 || p->offset >= (Dwarf_Off) (endp - *readp + offset))
4485 printf (gettext (" [%6tx] <UNUSED GARBAGE IN REST OF SECTION>\n"),
4490 if (p->offset != (Dwarf_Off) offset)
4492 *readp += p->offset - offset;
4493 printf (gettext (" [%6tx] <UNUSED GARBAGE> ... %" PRIu64 " bytes ...\n"),
4494 offset, (Dwarf_Off) p->offset - offset);
4498 if (address_sizep != NULL)
4499 *address_sizep = listptr_address_size (p);
4500 if (offset_sizep != NULL)
4501 *offset_sizep = listptr_offset_size (p);
4503 *base = listptr_base (p);
4512 print_debug_abbrev_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
4513 Ebl *ebl, GElf_Ehdr *ehdr,
4514 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
4516 const size_t sh_size = (dbg->sectiondata[IDX_debug_abbrev] ?
4517 dbg->sectiondata[IDX_debug_abbrev]->d_size : 0);
4519 printf (gettext ("\nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"
4521 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
4522 (uint64_t) shdr->sh_offset);
4524 Dwarf_Off offset = 0;
4525 while (offset < sh_size)
4527 printf (gettext ("\nAbbreviation section at offset %" PRIu64 ":\n"),
4533 Dwarf_Abbrev abbrev;
4535 int res = dwarf_offabbrev (dbg, offset, &length, &abbrev);
4538 if (unlikely (res < 0))
4541 *** error while reading abbreviation: %s\n"),
4546 /* This is the NUL byte at the end of the section. */
4551 /* We know these calls can never fail. */
4552 unsigned int code = dwarf_getabbrevcode (&abbrev);
4553 unsigned int tag = dwarf_getabbrevtag (&abbrev);
4554 int has_children = dwarf_abbrevhaschildren (&abbrev);
4556 printf (gettext (" [%5u] offset: %" PRId64
4557 ", children: %s, tag: %s\n"),
4558 code, (int64_t) offset,
4559 has_children ? gettext ("yes") : gettext ("no"),
4560 dwarf_tag_name (tag));
4566 while (dwarf_getabbrevattr (&abbrev, cnt,
4567 &name, &form, &enoffset) == 0)
4569 printf (" attr: %s, form: %s, offset: %#" PRIx64 "\n",
4570 dwarf_attr_name (name), dwarf_form_name (form),
4571 (uint64_t) enoffset);
4582 /* Print content of DWARF .debug_aranges section. We fortunately do
4583 not have to know a bit about the structure of the section, libdwarf
4584 takes care of it. */
4586 print_decoded_aranges_section (Ebl *ebl, GElf_Ehdr *ehdr, Elf_Scn *scn,
4587 GElf_Shdr *shdr, Dwarf *dbg)
4589 Dwarf_Aranges *aranges;
4591 if (unlikely (dwarf_getaranges (dbg, &aranges, &cnt) != 0))
4593 error (0, 0, gettext ("cannot get .debug_aranges content: %s"),
4598 GElf_Shdr glink_mem;
4600 glink = gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link), &glink_mem);
4603 error (0, 0, gettext ("invalid sh_link value in section %Zu"),
4608 printf (ngettext ("\
4609 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 " contains %zu entry:\n",
4611 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 " contains %zu entries:\n",
4613 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
4614 (uint64_t) shdr->sh_offset, cnt);
4616 /* Compute floor(log16(cnt)). */
4625 for (size_t n = 0; n < cnt; ++n)
4627 Dwarf_Arange *runp = dwarf_onearange (aranges, n);
4628 if (unlikely (runp == NULL))
4630 printf ("cannot get arange %zu: %s\n", n, dwarf_errmsg (-1));
4638 if (unlikely (dwarf_getarangeinfo (runp, &start, &length, &offset) != 0))
4639 printf (gettext (" [%*zu] ???\n"), digits, n);
4641 printf (gettext (" [%*zu] start: %0#*" PRIx64
4642 ", length: %5" PRIu64 ", CU DIE offset: %6"
4644 digits, n, ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 10 : 18,
4645 (uint64_t) start, (uint64_t) length, (int64_t) offset);
4650 /* Print content of DWARF .debug_aranges section. */
4652 print_debug_aranges_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
4653 Ebl *ebl, GElf_Ehdr *ehdr, Elf_Scn *scn,
4654 GElf_Shdr *shdr, Dwarf *dbg)
4658 print_decoded_aranges_section (ebl, ehdr, scn, shdr, dbg);
4662 Elf_Data *data = dbg->sectiondata[IDX_debug_aranges];
4664 if (unlikely (data == NULL))
4666 error (0, 0, gettext ("cannot get .debug_aranges content: %s"),
4672 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
4673 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
4674 (uint64_t) shdr->sh_offset);
4676 const unsigned char *readp = data->d_buf;
4677 const unsigned char *readendp = readp + data->d_size;
4679 while (readp < readendp)
4681 const unsigned char *hdrstart = readp;
4682 size_t start_offset = hdrstart - (const unsigned char *) data->d_buf;
4684 printf (gettext ("\nTable at offset %Zu:\n"), start_offset);
4685 if (readp + 4 > readendp)
4688 error (0, 0, gettext ("invalid data in section [%zu] '%s'"),
4689 elf_ndxscn (scn), section_name (ebl, ehdr, shdr));
4693 Dwarf_Word length = read_4ubyte_unaligned_inc (dbg, readp);
4694 unsigned int length_bytes = 4;
4695 if (length == DWARF3_LENGTH_64_BIT)
4697 if (readp + 8 > readendp)
4699 length = read_8ubyte_unaligned_inc (dbg, readp);
4703 const unsigned char *nexthdr = readp + length;
4704 printf (gettext ("\n Length: %6" PRIu64 "\n"),
4707 if (unlikely ((ptrdiff_t) length > readendp - readp))
4713 if (readp + 2 > readendp)
4715 uint_fast16_t version = read_2ubyte_unaligned_inc (dbg, readp);
4716 printf (gettext (" DWARF version: %6" PRIuFAST16 "\n"),
4720 error (0, 0, gettext ("unsupported aranges version"));
4725 if (readp + length_bytes > readendp)
4727 if (length_bytes == 8)
4728 offset = read_8ubyte_unaligned_inc (dbg, readp);
4730 offset = read_4ubyte_unaligned_inc (dbg, readp);
4731 printf (gettext (" CU offset: %6" PRIx64 "\n"),
4734 if (readp + 1 > readendp)
4736 unsigned int address_size = *readp++;
4737 printf (gettext (" Address size: %6" PRIu64 "\n"),
4738 (uint64_t) address_size);
4739 if (address_size != 4 && address_size != 8)
4741 error (0, 0, gettext ("unsupported address size"));
4745 unsigned int segment_size = *readp++;
4746 printf (gettext (" Segment size: %6" PRIu64 "\n\n"),
4747 (uint64_t) segment_size);
4748 if (segment_size != 0 && segment_size != 4 && segment_size != 8)
4750 error (0, 0, gettext ("unsupported segment size"));
4754 /* Round the address to the next multiple of 2*address_size. */
4755 readp += ((2 * address_size - ((readp - hdrstart) % (2 * address_size)))
4756 % (2 * address_size));
4758 while (readp < nexthdr)
4760 Dwarf_Word range_address;
4761 Dwarf_Word range_length;
4762 Dwarf_Word segment = 0;
4763 if (readp + 2 * address_size + segment_size > readendp)
4765 if (address_size == 4)
4767 range_address = read_4ubyte_unaligned_inc (dbg, readp);
4768 range_length = read_4ubyte_unaligned_inc (dbg, readp);
4772 range_address = read_8ubyte_unaligned_inc (dbg, readp);
4773 range_length = read_8ubyte_unaligned_inc (dbg, readp);
4776 if (segment_size == 4)
4777 segment = read_4ubyte_unaligned_inc (dbg, readp);
4778 else if (segment_size == 8)
4779 segment = read_8ubyte_unaligned_inc (dbg, readp);
4781 if (range_address == 0 && range_length == 0 && segment == 0)
4784 char *b = format_dwarf_addr (dwflmod, address_size, range_address,
4786 char *e = format_dwarf_addr (dwflmod, address_size,
4787 range_address + range_length - 1,
4789 if (segment_size != 0)
4790 printf (gettext (" %s..%s (%" PRIx64 ")\n"), b, e,
4791 (uint64_t) segment);
4793 printf (gettext (" %s..%s\n"), b, e);
4799 if (readp != nexthdr)
4801 size_t padding = nexthdr - readp;
4802 printf (gettext (" %Zu padding bytes\n"), padding);
4809 /* Print content of DWARF .debug_ranges section. */
4811 print_debug_ranges_section (Dwfl_Module *dwflmod,
4812 Ebl *ebl, GElf_Ehdr *ehdr,
4813 Elf_Scn *scn, GElf_Shdr *shdr,
4816 Elf_Data *data = dbg->sectiondata[IDX_debug_ranges];
4818 if (unlikely (data == NULL))
4820 error (0, 0, gettext ("cannot get .debug_ranges content: %s"),
4826 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
4827 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
4828 (uint64_t) shdr->sh_offset);
4830 sort_listptr (&known_rangelistptr, "rangelistptr");
4831 size_t listptr_idx = 0;
4833 uint_fast8_t address_size = ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8;
4836 Dwarf_Addr base = 0;
4837 unsigned char *const endp = (unsigned char *) data->d_buf + data->d_size;
4838 unsigned char *readp = data->d_buf;
4839 while (readp < endp)
4841 ptrdiff_t offset = readp - (unsigned char *) data->d_buf;
4843 if (first && skip_listptr_hole (&known_rangelistptr, &listptr_idx,
4844 &address_size, NULL, &base, NULL,
4845 offset, &readp, endp))
4848 if (unlikely (data->d_size - offset < (size_t) address_size * 2))
4850 printf (gettext (" [%6tx] <INVALID DATA>\n"), offset);
4856 if (address_size == 8)
4858 begin = read_8ubyte_unaligned_inc (dbg, readp);
4859 end = read_8ubyte_unaligned_inc (dbg, readp);
4863 begin = read_4ubyte_unaligned_inc (dbg, readp);
4864 end = read_4ubyte_unaligned_inc (dbg, readp);
4865 if (begin == (Dwarf_Addr) (uint32_t) -1)
4866 begin = (Dwarf_Addr) -1l;
4869 if (begin == (Dwarf_Addr) -1l) /* Base address entry. */
4871 char *b = format_dwarf_addr (dwflmod, address_size, end, end);
4872 printf (gettext (" [%6tx] base address %s\n"), offset, b);
4876 else if (begin == 0 && end == 0) /* End of list entry. */
4879 printf (gettext (" [%6tx] empty list\n"), offset);
4884 char *b = format_dwarf_addr (dwflmod, address_size, base + begin,
4886 char *e = format_dwarf_addr (dwflmod, address_size, base + end,
4888 /* We have an address range entry. */
4889 if (first) /* First address range entry in a list. */
4890 printf (gettext (" [%6tx] %s..%s\n"), offset, b, e);
4892 printf (gettext (" %s..%s\n"), b, e);
4901 #define REGNAMESZ 16
4903 register_info (Ebl *ebl, unsigned int regno, const Ebl_Register_Location *loc,
4904 char name[REGNAMESZ], int *bits, int *type)
4909 ssize_t n = ebl_register_info (ebl, regno, name, REGNAMESZ, &pfx, &set,
4910 bits ?: &ignore, type ?: &ignore);
4914 snprintf (name, REGNAMESZ, "reg%u", loc->regno);
4916 snprintf (name, REGNAMESZ, "??? 0x%x", regno);
4918 *bits = loc != NULL ? loc->bits : 0;
4920 *type = DW_ATE_unsigned;
4921 set = "??? unrecognized";
4925 if (bits != NULL && *bits <= 0)
4926 *bits = loc != NULL ? loc->bits : 0;
4927 if (type != NULL && *type == DW_ATE_void)
4928 *type = DW_ATE_unsigned;
4935 print_cfa_program (const unsigned char *readp, const unsigned char *const endp,
4936 Dwarf_Word vma_base, unsigned int code_align,
4938 unsigned int version, unsigned int ptr_size,
4939 Dwfl_Module *dwflmod, Ebl *ebl, Dwarf *dbg)
4941 char regnamebuf[REGNAMESZ];
4942 const char *regname (unsigned int regno)
4944 register_info (ebl, regno, NULL, regnamebuf, NULL, NULL);
4948 puts ("\n Program:");
4949 Dwarf_Word pc = vma_base;
4950 while (readp < endp)
4952 unsigned int opcode = *readp++;
4954 if (opcode < DW_CFA_advance_loc)
4955 /* Extended opcode. */
4966 case DW_CFA_set_loc:
4967 get_uleb128 (op1, readp, endp);
4969 printf (" set_loc %" PRIu64 "\n", op1 * code_align);
4971 case DW_CFA_advance_loc1:
4972 printf (" advance_loc1 %u to %#" PRIx64 "\n",
4973 *readp, pc += *readp * code_align);
4976 case DW_CFA_advance_loc2:
4977 if ((uint64_t) (endp - readp) < 2)
4979 op1 = read_2ubyte_unaligned_inc (dbg, readp);
4980 printf (" advance_loc2 %" PRIu64 " to %#" PRIx64 "\n",
4981 op1, pc += op1 * code_align);
4983 case DW_CFA_advance_loc4:
4984 if ((uint64_t) (endp - readp) < 4)
4986 op1 = read_4ubyte_unaligned_inc (dbg, readp);
4987 printf (" advance_loc4 %" PRIu64 " to %#" PRIx64 "\n",
4988 op1, pc += op1 * code_align);
4990 case DW_CFA_offset_extended:
4991 get_uleb128 (op1, readp, endp);
4992 if ((uint64_t) (endp - readp) < 1)
4994 get_uleb128 (op2, readp, endp);
4995 printf (" offset_extended r%" PRIu64 " (%s) at cfa%+" PRId64
4997 op1, regname (op1), op2 * data_align);
4999 case DW_CFA_restore_extended:
5000 get_uleb128 (op1, readp, endp);
5001 printf (" restore_extended r%" PRIu64 " (%s)\n",
5002 op1, regname (op1));
5004 case DW_CFA_undefined:
5005 get_uleb128 (op1, readp, endp);
5006 printf (" undefined r%" PRIu64 " (%s)\n", op1, regname (op1));
5008 case DW_CFA_same_value:
5009 get_uleb128 (op1, readp, endp);
5010 printf (" same_value r%" PRIu64 " (%s)\n", op1, regname (op1));
5012 case DW_CFA_register:
5013 get_uleb128 (op1, readp, endp);
5014 if ((uint64_t) (endp - readp) < 1)
5016 get_uleb128 (op2, readp, endp);
5017 printf (" register r%" PRIu64 " (%s) in r%" PRIu64 " (%s)\n",
5018 op1, regname (op1), op2, regname (op2));
5020 case DW_CFA_remember_state:
5021 puts (" remember_state");
5023 case DW_CFA_restore_state:
5024 puts (" restore_state");
5026 case DW_CFA_def_cfa:
5027 get_uleb128 (op1, readp, endp);
5028 if ((uint64_t) (endp - readp) < 1)
5030 get_uleb128 (op2, readp, endp);
5031 printf (" def_cfa r%" PRIu64 " (%s) at offset %" PRIu64 "\n",
5032 op1, regname (op1), op2);
5034 case DW_CFA_def_cfa_register:
5035 get_uleb128 (op1, readp, endp);
5036 printf (" def_cfa_register r%" PRIu64 " (%s)\n",
5037 op1, regname (op1));
5039 case DW_CFA_def_cfa_offset:
5040 get_uleb128 (op1, readp, endp);
5041 printf (" def_cfa_offset %" PRIu64 "\n", op1);
5043 case DW_CFA_def_cfa_expression:
5044 get_uleb128 (op1, readp, endp); /* Length of DW_FORM_block. */
5045 printf (" def_cfa_expression %" PRIu64 "\n", op1);
5046 if ((uint64_t) (endp - readp) < op1)
5049 fputs (gettext (" <INVALID DATA>\n"), stdout);
5052 print_ops (dwflmod, dbg, 10, 10, version, ptr_size, 0, NULL,
5056 case DW_CFA_expression:
5057 get_uleb128 (op1, readp, endp);
5058 if ((uint64_t) (endp - readp) < 1)
5060 get_uleb128 (op2, readp, endp); /* Length of DW_FORM_block. */
5061 printf (" expression r%" PRIu64 " (%s) \n",
5062 op1, regname (op1));
5063 if ((uint64_t) (endp - readp) < op2)
5065 print_ops (dwflmod, dbg, 10, 10, version, ptr_size, 0, NULL,
5069 case DW_CFA_offset_extended_sf:
5070 get_uleb128 (op1, readp, endp);
5071 if ((uint64_t) (endp - readp) < 1)
5073 get_sleb128 (sop2, readp, endp);
5074 printf (" offset_extended_sf r%" PRIu64 " (%s) at cfa%+"
5076 op1, regname (op1), sop2 * data_align);
5078 case DW_CFA_def_cfa_sf:
5079 get_uleb128 (op1, readp, endp);
5080 if ((uint64_t) (endp - readp) < 1)
5082 get_sleb128 (sop2, readp, endp);
5083 printf (" def_cfa_sf r%" PRIu64 " (%s) at offset %" PRId64 "\n",
5084 op1, regname (op1), sop2 * data_align);
5086 case DW_CFA_def_cfa_offset_sf:
5087 get_sleb128 (sop1, readp, endp);
5088 printf (" def_cfa_offset_sf %" PRId64 "\n", sop1 * data_align);
5090 case DW_CFA_val_offset:
5091 // XXX overflow check
5092 get_uleb128 (op1, readp, endp);
5093 if ((uint64_t) (endp - readp) < 1)
5095 get_uleb128 (op2, readp, endp);
5096 printf (" val_offset %" PRIu64 " at offset %" PRIu64 "\n",
5097 op1, op2 * data_align);
5099 case DW_CFA_val_offset_sf:
5100 // XXX overflow check
5101 get_uleb128 (op1, readp, endp);
5102 if ((uint64_t) (endp - readp) < 1)
5104 get_sleb128 (sop2, readp, endp);
5105 printf (" val_offset_sf %" PRIu64 " at offset %" PRId64 "\n",
5106 op1, sop2 * data_align);
5108 case DW_CFA_val_expression:
5109 get_uleb128 (op1, readp, endp);
5110 if ((uint64_t) (endp - readp) < 1)
5112 get_uleb128 (op2, readp, endp); /* Length of DW_FORM_block. */
5113 printf (" val_expression r%" PRIu64 " (%s)\n",
5114 op1, regname (op1));
5115 if ((uint64_t) (endp - readp) < op2)
5117 print_ops (dwflmod, dbg, 10, 10, version, ptr_size, 0,
5121 case DW_CFA_MIPS_advance_loc8:
5122 if ((uint64_t) (endp - readp) < 8)
5124 op1 = read_8ubyte_unaligned_inc (dbg, readp);
5125 printf (" MIPS_advance_loc8 %" PRIu64 " to %#" PRIx64 "\n",
5126 op1, pc += op1 * code_align);
5128 case DW_CFA_GNU_window_save:
5129 puts (" GNU_window_save");
5131 case DW_CFA_GNU_args_size:
5132 get_uleb128 (op1, readp, endp);
5133 printf (" args_size %" PRIu64 "\n", op1);
5136 printf (" ??? (%u)\n", opcode);
5139 else if (opcode < DW_CFA_offset)
5140 printf (" advance_loc %u to %#" PRIx64 "\n",
5141 opcode & 0x3f, pc += (opcode & 0x3f) * code_align);
5142 else if (opcode < DW_CFA_restore)
5145 get_uleb128 (offset, readp, endp);
5146 printf (" offset r%u (%s) at cfa%+" PRId64 "\n",
5147 opcode & 0x3f, regname (opcode & 0x3f), offset * data_align);
5150 printf (" restore r%u (%s)\n",
5151 opcode & 0x3f, regname (opcode & 0x3f));
5157 encoded_ptr_size (int encoding, unsigned int ptr_size)
5159 switch (encoding & 7)
5161 case DW_EH_PE_udata4:
5163 case DW_EH_PE_udata8:
5169 fprintf (stderr, "Unsupported pointer encoding: %#x, "
5170 "assuming pointer size of %d.\n", encoding, ptr_size);
5176 print_encoding (unsigned int val)
5180 case DW_EH_PE_absptr:
5181 fputs ("absptr", stdout);
5183 case DW_EH_PE_uleb128:
5184 fputs ("uleb128", stdout);
5186 case DW_EH_PE_udata2:
5187 fputs ("udata2", stdout);
5189 case DW_EH_PE_udata4:
5190 fputs ("udata4", stdout);
5192 case DW_EH_PE_udata8:
5193 fputs ("udata8", stdout);
5195 case DW_EH_PE_sleb128:
5196 fputs ("sleb128", stdout);
5198 case DW_EH_PE_sdata2:
5199 fputs ("sdata2", stdout);
5201 case DW_EH_PE_sdata4:
5202 fputs ("sdata4", stdout);
5204 case DW_EH_PE_sdata8:
5205 fputs ("sdata8", stdout);
5208 /* We did not use any of the bits after all. */
5217 print_relinfo (unsigned int val)
5221 case DW_EH_PE_pcrel:
5222 fputs ("pcrel", stdout);
5224 case DW_EH_PE_textrel:
5225 fputs ("textrel", stdout);
5227 case DW_EH_PE_datarel:
5228 fputs ("datarel", stdout);
5230 case DW_EH_PE_funcrel:
5231 fputs ("funcrel", stdout);
5233 case DW_EH_PE_aligned:
5234 fputs ("aligned", stdout);
5245 print_encoding_base (const char *pfx, unsigned int fde_encoding)
5247 printf ("(%s", pfx);
5249 if (fde_encoding == DW_EH_PE_omit)
5253 unsigned int w = fde_encoding;
5255 w = print_encoding (w);
5259 if (w != fde_encoding)
5260 fputc_unlocked (' ', stdout);
5262 w = print_relinfo (w);
5266 printf ("%s%x", w != fde_encoding ? " " : "", w);
5273 static const unsigned char *
5274 read_encoded (unsigned int encoding, const unsigned char *readp,
5275 const unsigned char *const endp, uint64_t *res, Dwarf *dbg)
5277 if ((encoding & 0xf) == DW_EH_PE_absptr)
5278 encoding = gelf_getclass (dbg->elf) == ELFCLASS32
5279 ? DW_EH_PE_udata4 : DW_EH_PE_udata8;
5281 switch (encoding & 0xf)
5283 case DW_EH_PE_uleb128:
5284 get_uleb128 (*res, readp, endp);
5286 case DW_EH_PE_sleb128:
5287 get_sleb128 (*res, readp, endp);
5289 case DW_EH_PE_udata2:
5290 if (readp + 2 > endp)
5292 *res = read_2ubyte_unaligned_inc (dbg, readp);
5294 case DW_EH_PE_udata4:
5295 if (readp + 4 > endp)
5297 *res = read_4ubyte_unaligned_inc (dbg, readp);
5299 case DW_EH_PE_udata8:
5300 if (readp + 8 > endp)
5302 *res = read_8ubyte_unaligned_inc (dbg, readp);
5304 case DW_EH_PE_sdata2:
5305 if (readp + 2 > endp)
5307 *res = read_2sbyte_unaligned_inc (dbg, readp);
5309 case DW_EH_PE_sdata4:
5310 if (readp + 4 > endp)
5312 *res = read_4sbyte_unaligned_inc (dbg, readp);
5314 case DW_EH_PE_sdata8:
5315 if (readp + 8 > endp)
5317 *res = read_8sbyte_unaligned_inc (dbg, readp);
5322 gettext ("invalid encoding"));
5330 print_debug_frame_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
5331 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
5334 /* We know this call will succeed since it did in the caller. */
5335 (void) elf_getshdrstrndx (ebl->elf, &shstrndx);
5336 const char *scnname = elf_strptr (ebl->elf, shstrndx, shdr->sh_name);
5338 /* Needed if we find PC-relative addresses. */
5340 if (dwfl_module_getelf (dwflmod, &bias) == NULL)
5342 error (0, 0, gettext ("cannot get ELF: %s"), dwfl_errmsg (-1));
5346 bool is_eh_frame = strcmp (scnname, ".eh_frame") == 0;
5347 Elf_Data *data = (is_eh_frame
5348 ? elf_rawdata (scn, NULL)
5349 : dbg->sectiondata[IDX_debug_frame]);
5351 if (unlikely (data == NULL))
5353 error (0, 0, gettext ("cannot get %s content: %s"),
5354 scnname, elf_errmsg (-1));
5360 \nCall frame information section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
5361 elf_ndxscn (scn), scnname, (uint64_t) shdr->sh_offset);
5364 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
5365 elf_ndxscn (scn), scnname, (uint64_t) shdr->sh_offset);
5369 ptrdiff_t cie_offset;
5370 const char *augmentation;
5371 unsigned int code_alignment_factor;
5372 unsigned int data_alignment_factor;
5373 uint8_t address_size;
5374 uint8_t fde_encoding;
5375 uint8_t lsda_encoding;
5376 struct cieinfo *next;
5379 const unsigned char *readp = data->d_buf;
5380 const unsigned char *const dataend = ((unsigned char *) data->d_buf
5382 while (readp < dataend)
5384 if (unlikely (readp + 4 > dataend))
5387 error (0, 0, gettext ("invalid data in section [%zu] '%s'"),
5388 elf_ndxscn (scn), scnname);
5392 /* At the beginning there must be a CIE. There can be multiple,
5393 hence we test tis in a loop. */
5394 ptrdiff_t offset = readp - (unsigned char *) data->d_buf;
5396 Dwarf_Word unit_length = read_4ubyte_unaligned_inc (dbg, readp);
5397 unsigned int length = 4;
5398 if (unlikely (unit_length == 0xffffffff))
5400 if (unlikely (readp + 8 > dataend))
5403 unit_length = read_8ubyte_unaligned_inc (dbg, readp);
5407 if (unlikely (unit_length == 0))
5409 printf (gettext ("\n [%6tx] Zero terminator\n"), offset);
5413 Dwarf_Word maxsize = dataend - readp;
5414 if (unlikely (unit_length > maxsize))
5417 unsigned int ptr_size = ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8;
5419 ptrdiff_t start = readp - (unsigned char *) data->d_buf;
5420 const unsigned char *const cieend = readp + unit_length;
5421 if (unlikely (cieend > dataend || readp + 8 > dataend))
5427 cie_id = read_4ubyte_unaligned_inc (dbg, readp);
5428 if (!is_eh_frame && cie_id == DW_CIE_ID_32)
5429 cie_id = DW_CIE_ID_64;
5432 cie_id = read_8ubyte_unaligned_inc (dbg, readp);
5434 uint_fast8_t version = 2;
5435 unsigned int code_alignment_factor;
5436 int data_alignment_factor;
5437 unsigned int fde_encoding = 0;
5438 unsigned int lsda_encoding = 0;
5439 Dwarf_Word initial_location = 0;
5440 Dwarf_Word vma_base = 0;
5442 if (cie_id == (is_eh_frame ? 0 : DW_CIE_ID_64))
5445 const char *const augmentation = (const char *) readp;
5446 readp = memchr (readp, '\0', cieend - readp);
5447 if (unlikely (readp == NULL))
5451 uint_fast8_t segment_size = 0;
5454 if (cieend - readp < 5)
5456 ptr_size = *readp++;
5457 segment_size = *readp++;
5460 if (cieend - readp < 1)
5462 get_uleb128 (code_alignment_factor, readp, cieend);
5463 if (cieend - readp < 1)
5465 get_sleb128 (data_alignment_factor, readp, cieend);
5467 /* In some variant for unwind data there is another field. */
5468 if (strcmp (augmentation, "eh") == 0)
5469 readp += ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8;
5471 unsigned int return_address_register;
5472 if (cieend - readp < 1)
5474 if (unlikely (version == 1))
5475 return_address_register = *readp++;
5477 get_uleb128 (return_address_register, readp, cieend);
5479 printf ("\n [%6tx] CIE length=%" PRIu64 "\n"
5480 " CIE_id: %" PRIu64 "\n"
5482 " augmentation: \"%s\"\n",
5483 offset, (uint64_t) unit_length, (uint64_t) cie_id,
5484 version, augmentation);
5486 printf (" address_size: %u\n"
5487 " segment_size: %u\n",
5488 ptr_size, segment_size);
5489 printf (" code_alignment_factor: %u\n"
5490 " data_alignment_factor: %d\n"
5491 " return_address_register: %u\n",
5492 code_alignment_factor,
5493 data_alignment_factor, return_address_register);
5495 if (augmentation[0] == 'z')
5497 unsigned int augmentationlen;
5498 get_uleb128 (augmentationlen, readp, cieend);
5500 if (augmentationlen > (size_t) (cieend - readp))
5502 error (0, 0, gettext ("invalid augmentation length"));
5507 const char *hdr = "Augmentation data:";
5508 const char *cp = augmentation + 1;
5509 while (*cp != '\0' && cp < augmentation + augmentationlen + 1)
5511 printf (" %-26s%#x ", hdr, *readp);
5516 fde_encoding = *readp++;
5517 print_encoding_base (gettext ("FDE address encoding: "),
5520 else if (*cp == 'L')
5522 lsda_encoding = *readp++;
5523 print_encoding_base (gettext ("LSDA pointer encoding: "),
5526 else if (*cp == 'P')
5528 /* Personality. This field usually has a relocation
5529 attached pointing to __gcc_personality_v0. */
5530 const unsigned char *startp = readp;
5531 unsigned int encoding = *readp++;
5533 readp = read_encoded (encoding, readp,
5534 readp - 1 + augmentationlen,
5537 while (++startp < readp)
5538 printf ("%#x ", *startp);
5541 print_encoding (encoding);
5543 switch (encoding & 0xf)
5545 case DW_EH_PE_sleb128:
5546 case DW_EH_PE_sdata2:
5547 case DW_EH_PE_sdata4:
5548 printf ("%" PRId64 ")\n", val);
5551 printf ("%#" PRIx64 ")\n", val);
5556 printf ("(%x)\n", *readp++);
5562 if (likely (ptr_size == 4 || ptr_size == 8))
5564 struct cieinfo *newp = alloca (sizeof (*newp));
5565 newp->cie_offset = offset;
5566 newp->augmentation = augmentation;
5567 newp->fde_encoding = fde_encoding;
5568 newp->lsda_encoding = lsda_encoding;
5569 newp->address_size = ptr_size;
5570 newp->code_alignment_factor = code_alignment_factor;
5571 newp->data_alignment_factor = data_alignment_factor;
5578 struct cieinfo *cie = cies;
5581 ? start - (ptrdiff_t) cie_id == cie->cie_offset
5582 : (ptrdiff_t) cie_id == cie->cie_offset)
5586 if (unlikely (cie == NULL))
5588 puts ("invalid CIE reference in FDE");
5592 /* Initialize from CIE data. */
5593 fde_encoding = cie->fde_encoding;
5594 lsda_encoding = cie->lsda_encoding;
5595 ptr_size = encoded_ptr_size (fde_encoding, cie->address_size);
5596 code_alignment_factor = cie->code_alignment_factor;
5597 data_alignment_factor = cie->data_alignment_factor;
5599 const unsigned char *base = readp;
5600 // XXX There are sometimes relocations for this value
5601 initial_location = read_addr_unaligned_inc (ptr_size, dbg, readp);
5602 Dwarf_Word address_range
5603 = read_addr_unaligned_inc (ptr_size, dbg, readp);
5605 /* pcrel for an FDE address is relative to the runtime
5606 address of the start_address field itself. Sign extend
5607 if necessary to make sure the calculation is done on the
5608 full 64 bit address even when initial_location only holds
5609 the lower 32 bits. */
5610 Dwarf_Addr pc_start = initial_location;
5612 pc_start = (uint64_t) (int32_t) pc_start;
5613 if ((fde_encoding & 0x70) == DW_EH_PE_pcrel)
5614 pc_start += ((uint64_t) shdr->sh_addr
5615 + (base - (const unsigned char *) data->d_buf)
5618 char *a = format_dwarf_addr (dwflmod, cie->address_size,
5619 pc_start, initial_location);
5620 printf ("\n [%6tx] FDE length=%" PRIu64 " cie=[%6tx]\n"
5621 " CIE_pointer: %" PRIu64 "\n"
5622 " initial_location: %s",
5623 offset, (uint64_t) unit_length,
5624 cie->cie_offset, (uint64_t) cie_id, a);
5626 if ((fde_encoding & 0x70) == DW_EH_PE_pcrel)
5628 vma_base = (((uint64_t) shdr->sh_offset
5629 + (base - (const unsigned char *) data->d_buf)
5630 + (uint64_t) initial_location)
5632 ? UINT64_C (0xffffffff)
5633 : UINT64_C (0xffffffffffffffff)));
5634 printf (gettext (" (offset: %#" PRIx64 ")"),
5635 (uint64_t) vma_base);
5638 printf ("\n address_range: %#" PRIx64,
5639 (uint64_t) address_range);
5640 if ((fde_encoding & 0x70) == DW_EH_PE_pcrel)
5641 printf (gettext (" (end offset: %#" PRIx64 ")"),
5642 ((uint64_t) vma_base + (uint64_t) address_range)
5644 ? UINT64_C (0xffffffff)
5645 : UINT64_C (0xffffffffffffffff)));
5648 if (cie->augmentation[0] == 'z')
5650 unsigned int augmentationlen;
5651 if (cieend - readp < 1)
5653 get_uleb128 (augmentationlen, readp, cieend);
5655 if (augmentationlen > (size_t) (cieend - readp))
5657 error (0, 0, gettext ("invalid augmentation length"));
5662 if (augmentationlen > 0)
5664 const char *hdr = "Augmentation data:";
5665 const char *cp = cie->augmentation + 1;
5668 && cp < cie->augmentation + augmentationlen + 1)
5672 uint64_t lsda_pointer;
5673 const unsigned char *p
5674 = read_encoded (lsda_encoding, &readp[u],
5675 &readp[augmentationlen],
5676 &lsda_pointer, dbg);
5679 %-26sLSDA pointer: %#" PRIx64 "\n"),
5686 while (u < augmentationlen)
5688 printf (" %-26s%#x\n", hdr, readp[u++]);
5693 readp += augmentationlen;
5697 /* Handle the initialization instructions. */
5698 if (ptr_size != 4 && ptr_size !=8)
5699 printf ("invalid CIE pointer size (%u), must be 4 or 8.\n", ptr_size);
5701 print_cfa_program (readp, cieend, vma_base, code_alignment_factor,
5702 data_alignment_factor, version, ptr_size,
5711 Dwfl_Module *dwflmod;
5716 unsigned int version;
5717 unsigned int addrsize;
5718 unsigned int offset_size;
5719 struct Dwarf_CU *cu;
5724 attr_callback (Dwarf_Attribute *attrp, void *arg)
5726 struct attrcb_args *cbargs = (struct attrcb_args *) arg;
5727 const int level = cbargs->level;
5729 unsigned int attr = dwarf_whatattr (attrp);
5730 if (unlikely (attr == 0))
5732 if (!cbargs->silent)
5733 error (0, 0, gettext ("cannot get attribute code: %s"),
5735 return DWARF_CB_ABORT;
5738 unsigned int form = dwarf_whatform (attrp);
5739 if (unlikely (form == 0))
5741 if (!cbargs->silent)
5742 error (0, 0, gettext ("cannot get attribute form: %s"),
5744 return DWARF_CB_ABORT;
5750 if (!cbargs->silent)
5753 if (unlikely (dwarf_formaddr (attrp, &addr) != 0))
5756 if (!cbargs->silent)
5757 error (0, 0, gettext ("cannot get attribute value: %s"),
5759 return DWARF_CB_ABORT;
5761 char *a = format_dwarf_addr (cbargs->dwflmod, cbargs->addrsize,
5763 printf (" %*s%-20s (%s) %s\n",
5764 (int) (level * 2), "", dwarf_attr_name (attr),
5765 dwarf_form_name (form), a);
5770 case DW_FORM_indirect:
5772 case DW_FORM_string:
5773 case DW_FORM_GNU_strp_alt:
5776 const char *str = dwarf_formstring (attrp);
5777 if (unlikely (str == NULL))
5779 printf (" %*s%-20s (%s) \"%s\"\n",
5780 (int) (level * 2), "", dwarf_attr_name (attr),
5781 dwarf_form_name (form), str);
5784 case DW_FORM_ref_addr:
5785 case DW_FORM_ref_udata:
5790 case DW_FORM_GNU_ref_alt:
5794 if (unlikely (dwarf_formref_die (attrp, &ref) == NULL))
5797 printf (" %*s%-20s (%s) [%6" PRIxMAX "]\n",
5798 (int) (level * 2), "", dwarf_attr_name (attr),
5799 dwarf_form_name (form), (uintmax_t) dwarf_dieoffset (&ref));
5802 case DW_FORM_ref_sig8:
5805 printf (" %*s%-20s (%s) {%6" PRIx64 "}\n",
5806 (int) (level * 2), "", dwarf_attr_name (attr),
5807 dwarf_form_name (form),
5808 (uint64_t) read_8ubyte_unaligned (attrp->cu->dbg, attrp->valp));
5811 case DW_FORM_sec_offset:
5817 case DW_FORM_data1:;
5819 if (unlikely (dwarf_formudata (attrp, &num) != 0))
5822 const char *valuestr = NULL;
5825 /* This case can take either a constant or a loclistptr. */
5826 case DW_AT_data_member_location:
5827 if (form != DW_FORM_sec_offset
5828 && (cbargs->version >= 4
5829 || (form != DW_FORM_data4 && form != DW_FORM_data8)))
5831 if (!cbargs->silent)
5832 printf (" %*s%-20s (%s) %" PRIxMAX "\n",
5833 (int) (level * 2), "", dwarf_attr_name (attr),
5834 dwarf_form_name (form), (uintmax_t) num);
5837 /* else fallthrough */
5839 /* These cases always take a loclistptr and no constant. */
5840 case DW_AT_location:
5841 case DW_AT_data_location:
5842 case DW_AT_vtable_elem_location:
5843 case DW_AT_string_length:
5844 case DW_AT_use_location:
5845 case DW_AT_frame_base:
5846 case DW_AT_return_addr:
5847 case DW_AT_static_link:
5848 case DW_AT_GNU_call_site_value:
5849 case DW_AT_GNU_call_site_data_value:
5850 case DW_AT_GNU_call_site_target:
5851 case DW_AT_GNU_call_site_target_clobbered:
5852 notice_listptr (section_loc, &known_loclistptr,
5853 cbargs->addrsize, cbargs->offset_size,
5855 if (!cbargs->silent)
5856 printf (" %*s%-20s (%s) location list [%6" PRIxMAX "]\n",
5857 (int) (level * 2), "", dwarf_attr_name (attr),
5858 dwarf_form_name (form), (uintmax_t) num);
5862 notice_listptr (section_ranges, &known_rangelistptr,
5863 cbargs->addrsize, cbargs->offset_size,
5865 if (!cbargs->silent)
5866 printf (" %*s%-20s (%s) range list [%6" PRIxMAX "]\n",
5867 (int) (level * 2), "", dwarf_attr_name (attr),
5868 dwarf_form_name (form), (uintmax_t) num);
5871 case DW_AT_language:
5872 valuestr = dwarf_lang_name (num);
5874 case DW_AT_encoding:
5875 valuestr = dwarf_encoding_name (num);
5877 case DW_AT_accessibility:
5878 valuestr = dwarf_access_name (num);
5880 case DW_AT_visibility:
5881 valuestr = dwarf_visibility_name (num);
5883 case DW_AT_virtuality:
5884 valuestr = dwarf_virtuality_name (num);
5886 case DW_AT_identifier_case:
5887 valuestr = dwarf_identifier_case_name (num);
5889 case DW_AT_calling_convention:
5890 valuestr = dwarf_calling_convention_name (num);
5893 valuestr = dwarf_inline_name (num);
5895 case DW_AT_ordering:
5896 valuestr = dwarf_ordering_name (num);
5898 case DW_AT_discr_list:
5899 valuestr = dwarf_discr_list_name (num);
5909 /* When highpc is in constant form it is relative to lowpc.
5910 In that case also show the address. */
5912 if (attr == DW_AT_high_pc && dwarf_highpc (cbargs->die, &highpc) == 0)
5914 char *a = format_dwarf_addr (cbargs->dwflmod, cbargs->addrsize,
5916 printf (" %*s%-20s (%s) %" PRIuMAX " (%s)\n",
5917 (int) (level * 2), "", dwarf_attr_name (attr),
5918 dwarf_form_name (form), (uintmax_t) num, a);
5923 Dwarf_Sword snum = 0;
5924 if (form == DW_FORM_sdata)
5925 if (unlikely (dwarf_formsdata (attrp, &snum) != 0))
5928 if (valuestr == NULL)
5930 printf (" %*s%-20s (%s)",
5931 (int) (level * 2), "", dwarf_attr_name (attr),
5932 dwarf_form_name (form));
5933 if (form == DW_FORM_sdata)
5934 printf (" %" PRIdMAX "\n", (intmax_t) snum);
5936 printf (" %" PRIuMAX "\n", (uintmax_t) num);
5940 printf (" %*s%-20s (%s) %s",
5941 (int) (level * 2), "", dwarf_attr_name (attr),
5942 dwarf_form_name (form), valuestr);
5943 if (form == DW_FORM_sdata)
5944 printf (" (%" PRIdMAX ")\n", (intmax_t) snum);
5946 printf (" (%" PRIuMAX ")\n", (uintmax_t) num);
5955 if (unlikely (dwarf_formflag (attrp, &flag) != 0))
5958 printf (" %*s%-20s (%s) %s\n",
5959 (int) (level * 2), "", dwarf_attr_name (attr),
5960 dwarf_form_name (form), nl_langinfo (flag ? YESSTR : NOSTR));
5963 case DW_FORM_flag_present:
5966 printf (" %*s%-20s (%s) %s\n",
5967 (int) (level * 2), "", dwarf_attr_name (attr),
5968 dwarf_form_name (form), nl_langinfo (YESSTR));
5971 case DW_FORM_exprloc:
5972 case DW_FORM_block4:
5973 case DW_FORM_block2:
5974 case DW_FORM_block1:
5979 if (unlikely (dwarf_formblock (attrp, &block) != 0))
5982 printf (" %*s%-20s (%s) ",
5983 (int) (level * 2), "", dwarf_attr_name (attr),
5984 dwarf_form_name (form));
5989 if (form != DW_FORM_exprloc)
5991 print_block (block.length, block.data);
5996 case DW_AT_location:
5997 case DW_AT_data_location:
5998 case DW_AT_data_member_location:
5999 case DW_AT_vtable_elem_location:
6000 case DW_AT_string_length:
6001 case DW_AT_use_location:
6002 case DW_AT_frame_base:
6003 case DW_AT_return_addr:
6004 case DW_AT_static_link:
6005 case DW_AT_allocated:
6006 case DW_AT_associated:
6007 case DW_AT_bit_size:
6008 case DW_AT_bit_offset:
6009 case DW_AT_bit_stride:
6010 case DW_AT_byte_size:
6011 case DW_AT_byte_stride:
6013 case DW_AT_lower_bound:
6014 case DW_AT_upper_bound:
6015 case DW_AT_GNU_call_site_value:
6016 case DW_AT_GNU_call_site_data_value:
6017 case DW_AT_GNU_call_site_target:
6018 case DW_AT_GNU_call_site_target_clobbered:
6020 print_ops (cbargs->dwflmod, cbargs->dbg,
6021 12 + level * 2, 12 + level * 2,
6022 cbargs->version, cbargs->addrsize, cbargs->offset_size,
6023 attrp->cu, block.length, block.data);
6031 printf (" %*s%-20s (form: %#x) ???\n",
6032 (int) (level * 2), "", dwarf_attr_name (attr),
6041 print_debug_units (Dwfl_Module *dwflmod,
6042 Ebl *ebl, GElf_Ehdr *ehdr,
6043 Elf_Scn *scn, GElf_Shdr *shdr,
6044 Dwarf *dbg, bool debug_types)
6046 const bool silent = !(print_debug_sections & section_info);
6047 const char *secname = section_name (ebl, ehdr, shdr);
6051 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n [Offset]\n"),
6052 elf_ndxscn (scn), secname, (uint64_t) shdr->sh_offset);
6054 /* If the section is empty we don't have to do anything. */
6055 if (!silent && shdr->sh_size == 0)
6059 Dwarf_Die *dies = (Dwarf_Die *) xmalloc (maxdies * sizeof (Dwarf_Die));
6061 Dwarf_Off offset = 0;
6063 /* New compilation unit. */
6066 Dwarf_Off abbroffset;
6073 if (dwarf_next_unit (dbg, offset, &nextcu, &cuhl, &version,
6074 &abbroffset, &addrsize, &offsize,
6075 debug_types ? &typesig : NULL,
6076 debug_types ? &typeoff : NULL) != 0)
6082 printf (gettext (" Type unit at offset %" PRIu64 ":\n"
6083 " Version: %" PRIu16 ", Abbreviation section offset: %"
6084 PRIu64 ", Address size: %" PRIu8
6085 ", Offset size: %" PRIu8
6086 "\n Type signature: %#" PRIx64
6087 ", Type offset: %#" PRIx64 "\n"),
6088 (uint64_t) offset, version, abbroffset, addrsize, offsize,
6089 typesig, (uint64_t) typeoff);
6091 printf (gettext (" Compilation unit at offset %" PRIu64 ":\n"
6092 " Version: %" PRIu16 ", Abbreviation section offset: %"
6093 PRIu64 ", Address size: %" PRIu8
6094 ", Offset size: %" PRIu8 "\n"),
6095 (uint64_t) offset, version, abbroffset, addrsize, offsize);
6098 struct attrcb_args args =
6104 .addrsize = addrsize,
6105 .offset_size = offsize
6112 if (unlikely ((debug_types ? dwarf_offdie_types : dwarf_offdie)
6113 (dbg, offset, &dies[level]) == NULL))
6116 error (0, 0, gettext ("cannot get DIE at offset %" PRIu64
6117 " in section '%s': %s"),
6118 (uint64_t) offset, secname, dwarf_errmsg (-1));
6122 args.cu = dies[0].cu;
6126 offset = dwarf_dieoffset (&dies[level]);
6127 if (unlikely (offset == ~0ul))
6130 error (0, 0, gettext ("cannot get DIE offset: %s"),
6135 int tag = dwarf_tag (&dies[level]);
6136 if (unlikely (tag == DW_TAG_invalid))
6139 error (0, 0, gettext ("cannot get tag of DIE at offset %" PRIu64
6140 " in section '%s': %s"),
6141 (uint64_t) offset, secname, dwarf_errmsg (-1));
6146 printf (" [%6" PRIx64 "] %*s%s\n",
6147 (uint64_t) offset, (int) (level * 2), "",
6148 dwarf_tag_name (tag));
6150 /* Print the attribute values. */
6152 args.die = &dies[level];
6153 (void) dwarf_getattrs (&dies[level], attr_callback, &args, 0);
6155 /* Make room for the next level's DIE. */
6156 if (level + 1 == maxdies)
6157 dies = (Dwarf_Die *) xrealloc (dies,
6159 * sizeof (Dwarf_Die));
6161 int res = dwarf_child (&dies[level], &dies[level + 1]);
6164 while ((res = dwarf_siblingof (&dies[level], &dies[level])) == 1)
6168 if (unlikely (res == -1))
6171 error (0, 0, gettext ("cannot get next DIE: %s\n"),
6176 else if (unlikely (res < 0))
6179 error (0, 0, gettext ("cannot get next DIE: %s"),
6197 print_debug_info_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
6198 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6200 print_debug_units (dwflmod, ebl, ehdr, scn, shdr, dbg, false);
6204 print_debug_types_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
6205 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6207 print_debug_units (dwflmod, ebl, ehdr, scn, shdr, dbg, true);
6212 print_decoded_line_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
6213 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6216 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n\n"),
6217 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
6218 (uint64_t) shdr->sh_offset);
6221 = elf_getident (ebl->elf, NULL)[EI_CLASS] == ELFCLASS32 ? 4 : 8;
6224 Dwarf_Off ncuoffset = 0;
6226 while (dwarf_nextcu (dbg, cuoffset = ncuoffset, &ncuoffset, &hsize,
6227 NULL, NULL, NULL) == 0)
6230 if (dwarf_offdie (dbg, cuoffset + hsize, &cudie) == NULL)
6235 if (dwarf_getsrclines (&cudie, &lines, &nlines) != 0)
6238 printf (" CU [%" PRIx64 "] %s\n",
6239 dwarf_dieoffset (&cudie), dwarf_diename (&cudie));
6240 printf (" line:col SBPE* disc isa op address"
6241 " (Statement Block Prologue Epilogue *End)\n");
6242 const char *last_file = "";
6243 for (size_t n = 0; n < nlines; n++)
6245 Dwarf_Line *line = dwarf_onesrcline (lines, n);
6246 Dwarf_Word mtime, length;
6247 const char *file = dwarf_linesrc (line, &mtime, &length);
6248 if (strcmp (last_file, file) != 0)
6250 printf (" %s (mtime: %" PRIu64 ", length: %" PRIu64 ")\n",
6251 file, mtime, length);
6256 bool statement, endseq, block, prologue_end, epilogue_begin;
6257 unsigned int lineop, isa, disc;
6259 dwarf_lineaddr (line, &address);
6260 dwarf_lineno (line, &lineno);
6261 dwarf_linecol (line, &colno);
6262 dwarf_lineop_index (line, &lineop);
6263 dwarf_linebeginstatement (line, &statement);
6264 dwarf_lineendsequence (line, &endseq);
6265 dwarf_lineblock (line, &block);
6266 dwarf_lineprologueend (line, &prologue_end);
6267 dwarf_lineepiloguebegin (line, &epilogue_begin);
6268 dwarf_lineisa (line, &isa);
6269 dwarf_linediscriminator (line, &disc);
6271 /* End sequence is special, it is one byte past. */
6272 char *a = format_dwarf_addr (dwflmod, address_size,
6273 address - (endseq ? 1 : 0), address);
6274 printf (" %4d:%-3d %c%c%c%c%c %4d %3d %2d %s\n",
6276 (statement ? 'S' : ' '),
6277 (block ? 'B' : ' '),
6278 (prologue_end ? 'P' : ' '),
6279 (epilogue_begin ? 'E' : ' '),
6280 (endseq ? '*' : ' '),
6281 disc, isa, lineop, a);
6292 print_debug_line_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
6293 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6297 print_decoded_line_section (dwflmod, ebl, ehdr, scn, shdr, dbg);
6302 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
6303 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
6304 (uint64_t) shdr->sh_offset);
6306 if (shdr->sh_size == 0)
6309 /* There is no functionality in libdw to read the information in the
6310 way it is represented here. Hardcode the decoder. */
6311 Elf_Data *data = dbg->sectiondata[IDX_debug_line];
6312 if (unlikely (data == NULL || data->d_buf == NULL))
6314 error (0, 0, gettext ("cannot get line data section data: %s"),
6319 const unsigned char *linep = (const unsigned char *) data->d_buf;
6320 const unsigned char *lineendp;
6323 < (lineendp = (const unsigned char *) data->d_buf + data->d_size))
6325 size_t start_offset = linep - (const unsigned char *) data->d_buf;
6327 printf (gettext ("\nTable at offset %Zu:\n"), start_offset);
6329 if (unlikely (linep + 4 > lineendp))
6331 Dwarf_Word unit_length = read_4ubyte_unaligned_inc (dbg, linep);
6332 unsigned int length = 4;
6333 if (unlikely (unit_length == 0xffffffff))
6335 if (unlikely (linep + 8 > lineendp))
6338 error (0, 0, gettext ("invalid data in section [%zu] '%s'"),
6339 elf_ndxscn (scn), section_name (ebl, ehdr, shdr));
6342 unit_length = read_8ubyte_unaligned_inc (dbg, linep);
6346 /* Check whether we have enough room in the section. */
6347 if (unit_length < 2 + length + 5 * 1
6348 || unlikely (linep + unit_length > lineendp))
6350 lineendp = linep + unit_length;
6352 /* The next element of the header is the version identifier. */
6353 uint_fast16_t version = read_2ubyte_unaligned_inc (dbg, linep);
6355 /* Next comes the header length. */
6356 Dwarf_Word header_length;
6358 header_length = read_4ubyte_unaligned_inc (dbg, linep);
6360 header_length = read_8ubyte_unaligned_inc (dbg, linep);
6361 //const unsigned char *header_start = linep;
6363 /* Next the minimum instruction length. */
6364 uint_fast8_t minimum_instr_len = *linep++;
6366 /* Next the maximum operations per instruction, in version 4 format. */
6367 uint_fast8_t max_ops_per_instr = version < 4 ? 1 : *linep++;
6369 /* Then the flag determining the default value of the is_stmt
6371 uint_fast8_t default_is_stmt = *linep++;
6373 /* Now the line base. */
6374 int_fast8_t line_base = *((const int_fast8_t *) linep);
6377 /* And the line range. */
6378 uint_fast8_t line_range = *linep++;
6380 /* The opcode base. */
6381 uint_fast8_t opcode_base = *linep++;
6383 /* Print what we got so far. */
6384 printf (gettext ("\n"
6385 " Length: %" PRIu64 "\n"
6386 " DWARF version: %" PRIuFAST16 "\n"
6387 " Prologue length: %" PRIu64 "\n"
6388 " Minimum instruction length: %" PRIuFAST8 "\n"
6389 " Maximum operations per instruction: %" PRIuFAST8 "\n"
6390 " Initial value if '%s': %" PRIuFAST8 "\n"
6391 " Line base: %" PRIdFAST8 "\n"
6392 " Line range: %" PRIuFAST8 "\n"
6393 " Opcode base: %" PRIuFAST8 "\n"
6396 (uint64_t) unit_length, version, (uint64_t) header_length,
6397 minimum_instr_len, max_ops_per_instr,
6398 "is_stmt", default_is_stmt, line_base,
6399 line_range, opcode_base);
6401 if (unlikely (linep + opcode_base - 1 >= lineendp))
6405 gettext ("invalid data at offset %tu in section [%zu] '%s'"),
6406 linep - (const unsigned char *) data->d_buf,
6407 elf_ndxscn (scn), section_name (ebl, ehdr, shdr));
6411 int opcode_base_l10 = 1;
6412 unsigned int tmp = opcode_base;
6418 const uint8_t *standard_opcode_lengths = linep - 1;
6419 for (uint_fast8_t cnt = 1; cnt < opcode_base; ++cnt)
6420 printf (ngettext (" [%*" PRIuFAST8 "] %hhu argument\n",
6421 " [%*" PRIuFAST8 "] %hhu arguments\n",
6422 (int) linep[cnt - 1]),
6423 opcode_base_l10, cnt, linep[cnt - 1]);
6424 linep += opcode_base - 1;
6425 if (unlikely (linep >= lineendp))
6428 puts (gettext ("\nDirectory table:"));
6431 unsigned char *endp = memchr (linep, '\0', lineendp - linep);
6432 if (unlikely (endp == NULL))
6435 printf (" %s\n", (char *) linep);
6439 /* Skip the final NUL byte. */
6442 if (unlikely (linep >= lineendp))
6444 puts (gettext ("\nFile name table:\n"
6445 " Entry Dir Time Size Name"));
6446 for (unsigned int cnt = 1; *linep != 0; ++cnt)
6448 /* First comes the file name. */
6449 char *fname = (char *) linep;
6450 unsigned char *endp = memchr (fname, '\0', lineendp - linep);
6451 if (unlikely (endp == NULL))
6455 /* Then the index. */
6456 unsigned int diridx;
6457 if (lineendp - linep < 1)
6459 get_uleb128 (diridx, linep, lineendp);
6461 /* Next comes the modification time. */
6463 if (lineendp - linep < 1)
6465 get_uleb128 (mtime, linep, lineendp);
6467 /* Finally the length of the file. */
6469 if (lineendp - linep < 1)
6471 get_uleb128 (fsize, linep, lineendp);
6473 printf (" %-5u %-5u %-9u %-9u %s\n",
6474 cnt, diridx, mtime, fsize, fname);
6476 /* Skip the final NUL byte. */
6479 puts (gettext ("\nLine number statements:"));
6480 Dwarf_Word address = 0;
6481 unsigned int op_index = 0;
6483 uint_fast8_t is_stmt = default_is_stmt;
6485 /* Default address value, in case we do not find the CU. */
6487 = elf_getident (ebl->elf, NULL)[EI_CLASS] == ELFCLASS32 ? 4 : 8;
6489 /* Determine the CU this block is for. */
6491 Dwarf_Off ncuoffset = 0;
6493 while (dwarf_nextcu (dbg, cuoffset = ncuoffset, &ncuoffset, &hsize,
6494 NULL, NULL, NULL) == 0)
6497 if (dwarf_offdie (dbg, cuoffset + hsize, &cudie) == NULL)
6499 Dwarf_Attribute stmt_list;
6500 if (dwarf_attr (&cudie, DW_AT_stmt_list, &stmt_list) == NULL)
6503 if (dwarf_formudata (&stmt_list, &lineoff) != 0)
6505 if (lineoff == start_offset)
6508 address_size = cudie.cu->address_size;
6513 /* Apply the "operation advance" from a special opcode
6514 or DW_LNS_advance_pc (as per DWARF4 6.2.5.1). */
6515 unsigned int op_addr_advance;
6517 inline void advance_pc (unsigned int op_advance)
6519 op_addr_advance = minimum_instr_len * ((op_index + op_advance)
6520 / max_ops_per_instr);
6521 address += op_advance;
6522 show_op_index = (op_index > 0 ||
6523 (op_index + op_advance) % max_ops_per_instr > 0);
6524 op_index = (op_index + op_advance) % max_ops_per_instr;
6527 if (max_ops_per_instr == 0)
6530 gettext ("invalid maximum operations per instruction is zero"));
6535 while (linep < lineendp)
6537 size_t offset = linep - (const unsigned char *) data->d_buf;
6541 /* Read the opcode. */
6542 unsigned int opcode = *linep++;
6544 printf (" [%6" PRIx64 "]", (uint64_t)offset);
6545 /* Is this a special opcode? */
6546 if (likely (opcode >= opcode_base))
6548 if (unlikely (line_range == 0))
6551 /* Yes. Handling this is quite easy since the opcode value
6554 opcode = (desired line increment - line_base)
6555 + (line_range * address advance) + opcode_base
6557 int line_increment = (line_base
6558 + (opcode - opcode_base) % line_range);
6560 /* Perform the increments. */
6561 line += line_increment;
6562 advance_pc ((opcode - opcode_base) / line_range);
6564 char *a = format_dwarf_addr (dwflmod, 0, address, address);
6567 special opcode %u: address+%u = %s, op_index = %u, line%+d = %zu\n"),
6568 opcode, op_addr_advance, a, op_index,
6569 line_increment, line);
6572 special opcode %u: address+%u = %s, line%+d = %zu\n"),
6573 opcode, op_addr_advance, a, line_increment, line);
6576 else if (opcode == 0)
6578 /* This an extended opcode. */
6579 if (unlikely (linep + 2 > lineendp))
6583 unsigned int len = *linep++;
6585 if (unlikely (linep + len > lineendp))
6588 /* The sub-opcode. */
6591 printf (gettext (" extended opcode %u: "), opcode);
6595 case DW_LNE_end_sequence:
6596 puts (gettext (" end of sequence"));
6598 /* Reset the registers we care about. */
6602 is_stmt = default_is_stmt;
6605 case DW_LNE_set_address:
6607 if (unlikely ((size_t) (lineendp - linep) < address_size))
6609 if (address_size == 4)
6610 address = read_4ubyte_unaligned_inc (dbg, linep);
6612 address = read_8ubyte_unaligned_inc (dbg, linep);
6614 char *a = format_dwarf_addr (dwflmod, 0, address, address);
6615 printf (gettext (" set address to %s\n"), a);
6620 case DW_LNE_define_file:
6622 char *fname = (char *) linep;
6623 unsigned char *endp = memchr (linep, '\0',
6625 if (unlikely (endp == NULL))
6629 unsigned int diridx;
6630 if (lineendp - linep < 1)
6632 get_uleb128 (diridx, linep, lineendp);
6634 if (lineendp - linep < 1)
6636 get_uleb128 (mtime, linep, lineendp);
6637 Dwarf_Word filelength;
6638 if (lineendp - linep < 1)
6640 get_uleb128 (filelength, linep, lineendp);
6643 define new file: dir=%u, mtime=%" PRIu64 ", length=%" PRIu64 ", name=%s\n"),
6644 diridx, (uint64_t) mtime, (uint64_t) filelength,
6649 case DW_LNE_set_discriminator:
6650 /* Takes one ULEB128 parameter, the discriminator. */
6651 if (unlikely (standard_opcode_lengths[opcode] != 1))
6654 get_uleb128 (u128, linep, lineendp);
6655 printf (gettext (" set discriminator to %u\n"), u128);
6659 /* Unknown, ignore it. */
6660 puts (gettext (" unknown opcode"));
6665 else if (opcode <= DW_LNS_set_isa)
6667 /* This is a known standard opcode. */
6671 /* Takes no argument. */
6672 puts (gettext (" copy"));
6675 case DW_LNS_advance_pc:
6676 /* Takes one uleb128 parameter which is added to the
6678 get_uleb128 (u128, linep, lineendp);
6681 char *a = format_dwarf_addr (dwflmod, 0, address, address);
6684 advance address by %u to %s, op_index to %u\n"),
6685 op_addr_advance, a, op_index);
6687 printf (gettext (" advance address by %u to %s\n"),
6688 op_addr_advance, a);
6693 case DW_LNS_advance_line:
6694 /* Takes one sleb128 parameter which is added to the
6696 get_sleb128 (s128, linep, lineendp);
6699 advance line by constant %d to %" PRId64 "\n"),
6700 s128, (int64_t) line);
6703 case DW_LNS_set_file:
6704 /* Takes one uleb128 parameter which is stored in file. */
6705 get_uleb128 (u128, linep, lineendp);
6706 printf (gettext (" set file to %" PRIu64 "\n"),
6710 case DW_LNS_set_column:
6711 /* Takes one uleb128 parameter which is stored in column. */
6712 if (unlikely (standard_opcode_lengths[opcode] != 1))
6715 get_uleb128 (u128, linep, lineendp);
6716 printf (gettext (" set column to %" PRIu64 "\n"),
6720 case DW_LNS_negate_stmt:
6721 /* Takes no argument. */
6722 is_stmt = 1 - is_stmt;
6723 printf (gettext (" set '%s' to %" PRIuFAST8 "\n"),
6724 "is_stmt", is_stmt);
6727 case DW_LNS_set_basic_block:
6728 /* Takes no argument. */
6729 puts (gettext (" set basic block flag"));
6732 case DW_LNS_const_add_pc:
6733 /* Takes no argument. */
6735 if (unlikely (line_range == 0))
6738 advance_pc ((255 - opcode_base) / line_range);
6740 char *a = format_dwarf_addr (dwflmod, 0, address, address);
6743 advance address by constant %u to %s, op_index to %u\n"),
6744 op_addr_advance, a, op_index);
6747 advance address by constant %u to %s\n"),
6748 op_addr_advance, a);
6753 case DW_LNS_fixed_advance_pc:
6754 /* Takes one 16 bit parameter which is added to the
6756 if (unlikely (standard_opcode_lengths[opcode] != 1))
6759 u128 = read_2ubyte_unaligned_inc (dbg, linep);
6763 char *a = format_dwarf_addr (dwflmod, 0, address, address);
6765 advance address by fixed value %u to %s\n"),
6771 case DW_LNS_set_prologue_end:
6772 /* Takes no argument. */
6773 puts (gettext (" set prologue end flag"));
6776 case DW_LNS_set_epilogue_begin:
6777 /* Takes no argument. */
6778 puts (gettext (" set epilogue begin flag"));
6781 case DW_LNS_set_isa:
6782 /* Takes one uleb128 parameter which is stored in isa. */
6783 if (unlikely (standard_opcode_lengths[opcode] != 1))
6786 get_uleb128 (u128, linep, lineendp);
6787 printf (gettext (" set isa to %u\n"), u128);
6793 /* This is a new opcode the generator but not we know about.
6794 Read the parameters associated with it but then discard
6795 everything. Read all the parameters for this opcode. */
6796 printf (ngettext (" unknown opcode with %" PRIu8 " parameter:",
6797 " unknown opcode with %" PRIu8 " parameters:",
6798 standard_opcode_lengths[opcode]),
6799 standard_opcode_lengths[opcode]);
6800 for (int n = standard_opcode_lengths[opcode]; n > 0; --n)
6802 get_uleb128 (u128, linep, lineendp);
6803 if (n != standard_opcode_lengths[opcode])
6804 putc_unlocked (',', stdout);
6805 printf (" %u", u128);
6808 /* Next round, ignore this opcode. */
6814 /* There must only be one data block. */
6815 assert (elf_getdata (scn, data) == NULL);
6820 print_debug_loc_section (Dwfl_Module *dwflmod,
6821 Ebl *ebl, GElf_Ehdr *ehdr,
6822 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6824 Elf_Data *data = dbg->sectiondata[IDX_debug_loc];
6826 if (unlikely (data == NULL))
6828 error (0, 0, gettext ("cannot get .debug_loc content: %s"),
6834 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
6835 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
6836 (uint64_t) shdr->sh_offset);
6838 sort_listptr (&known_loclistptr, "loclistptr");
6839 size_t listptr_idx = 0;
6841 uint_fast8_t address_size = ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8;
6842 uint_fast8_t offset_size = 4;
6845 struct Dwarf_CU *cu = NULL;
6846 Dwarf_Addr base = 0;
6847 unsigned char *readp = data->d_buf;
6848 unsigned char *const endp = (unsigned char *) data->d_buf + data->d_size;
6849 while (readp < endp)
6851 ptrdiff_t offset = readp - (unsigned char *) data->d_buf;
6853 if (first && skip_listptr_hole (&known_loclistptr, &listptr_idx,
6854 &address_size, &offset_size, &base,
6855 &cu, offset, &readp, endp))
6858 if (unlikely (data->d_size - offset < (size_t) address_size * 2))
6860 printf (gettext (" [%6tx] <INVALID DATA>\n"), offset);
6866 if (address_size == 8)
6868 begin = read_8ubyte_unaligned_inc (dbg, readp);
6869 end = read_8ubyte_unaligned_inc (dbg, readp);
6873 begin = read_4ubyte_unaligned_inc (dbg, readp);
6874 end = read_4ubyte_unaligned_inc (dbg, readp);
6875 if (begin == (Dwarf_Addr) (uint32_t) -1)
6876 begin = (Dwarf_Addr) -1l;
6879 if (begin == (Dwarf_Addr) -1l) /* Base address entry. */
6881 char *b = format_dwarf_addr (dwflmod, address_size, end, end);
6882 printf (gettext (" [%6tx] base address %s\n"), offset, b);
6886 else if (begin == 0 && end == 0) /* End of list entry. */
6889 printf (gettext (" [%6tx] empty list\n"), offset);
6894 /* We have a location expression entry. */
6895 uint_fast16_t len = read_2ubyte_unaligned_inc (dbg, readp);
6897 char *b = format_dwarf_addr (dwflmod, address_size, base + begin,
6899 char *e = format_dwarf_addr (dwflmod, address_size, base + end,
6902 if (first) /* First entry in a list. */
6903 printf (gettext (" [%6tx] %s..%s"), offset, b, e);
6905 printf (gettext (" %s..%s"), b, e);
6910 if (endp - readp <= (ptrdiff_t) len)
6912 fputs (gettext (" <INVALID DATA>\n"), stdout);
6916 print_ops (dwflmod, dbg, 1, 18 + (address_size * 4),
6917 3 /*XXX*/, address_size, offset_size, cu, len, readp);
6930 struct mac_culist *next;
6935 mac_compare (const void *p1, const void *p2)
6937 struct mac_culist *m1 = (struct mac_culist *) p1;
6938 struct mac_culist *m2 = (struct mac_culist *) p2;
6940 if (m1->offset < m2->offset)
6942 if (m1->offset > m2->offset)
6949 print_debug_macinfo_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
6950 Ebl *ebl, GElf_Ehdr *ehdr,
6951 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
6954 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
6955 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
6956 (uint64_t) shdr->sh_offset);
6957 putc_unlocked ('\n', stdout);
6959 /* There is no function in libdw to iterate over the raw content of
6960 the section but it is easy enough to do. */
6961 Elf_Data *data = dbg->sectiondata[IDX_debug_macinfo];
6962 if (unlikely (data == NULL || data->d_buf == NULL))
6964 error (0, 0, gettext ("cannot get macro information section data: %s"),
6969 /* Get the source file information for all CUs. */
6973 struct mac_culist *culist = NULL;
6975 while (dwarf_nextcu (dbg, offset = ncu, &ncu, &hsize, NULL, NULL, NULL) == 0)
6978 if (dwarf_offdie (dbg, offset + hsize, &cudie) == NULL)
6981 Dwarf_Attribute attr;
6982 if (dwarf_attr (&cudie, DW_AT_macro_info, &attr) == NULL)
6986 if (dwarf_formudata (&attr, &macoff) != 0)
6989 struct mac_culist *newp = (struct mac_culist *) alloca (sizeof (*newp));
6991 newp->offset = macoff;
6993 newp->next = culist;
6998 /* Convert the list into an array for easier consumption. */
6999 struct mac_culist *cus = (struct mac_culist *) alloca ((nculist + 1)
7002 cus[nculist].offset = data->d_size;
7005 for (size_t cnt = nculist - 1; culist != NULL; --cnt)
7007 assert (cnt < nculist);
7009 culist = culist->next;
7012 /* Sort the array according to the offset in the .debug_macinfo
7013 section. Note we keep the sentinel at the end. */
7014 qsort (cus, nculist, sizeof (*cus), mac_compare);
7017 const unsigned char *readp = (const unsigned char *) data->d_buf;
7018 const unsigned char *readendp = readp + data->d_size;
7021 while (readp < readendp)
7023 unsigned int opcode = *readp++;
7025 unsigned int u128_2;
7026 const unsigned char *endp;
7030 case DW_MACINFO_define:
7031 case DW_MACINFO_undef:
7032 case DW_MACINFO_vendor_ext:
7033 /* For the first two opcodes the parameters are
7037 We can treat these cases together. */
7038 get_uleb128 (u128, readp, readendp);
7040 endp = memchr (readp, '\0', readendp - readp);
7041 if (unlikely (endp == NULL))
7044 %*s*** non-terminated string at end of section"),
7049 if (opcode == DW_MACINFO_define)
7050 printf ("%*s#define %s, line %u\n",
7051 level, "", (char *) readp, u128);
7052 else if (opcode == DW_MACINFO_undef)
7053 printf ("%*s#undef %s, line %u\n",
7054 level, "", (char *) readp, u128);
7056 printf (" #vendor-ext %s, number %u\n", (char *) readp, u128);
7061 case DW_MACINFO_start_file:
7062 /* The two parameters are line and file index, in this order. */
7063 get_uleb128 (u128, readp, readendp);
7064 if (readendp - readp < 1)
7067 %*s*** missing DW_MACINFO_start_file argument at end of section"),
7071 get_uleb128 (u128_2, readp, readendp);
7073 /* Find the CU DIE for this file. */
7074 size_t macoff = readp - (const unsigned char *) data->d_buf;
7075 const char *fname = "???";
7076 if (macoff >= cus[0].offset)
7078 while (macoff >= cus[1].offset)
7081 if (cus[0].files == NULL
7082 && dwarf_getsrcfiles (&cus[0].die, &cus[0].files, NULL) != 0)
7083 cus[0].files = (Dwarf_Files *) -1l;
7085 if (cus[0].files != (Dwarf_Files *) -1l)
7086 fname = (dwarf_filesrc (cus[0].files, u128_2, NULL, NULL)
7090 printf ("%*sstart_file %u, [%u] %s\n",
7091 level, "", u128, u128_2, fname);
7095 case DW_MACINFO_end_file:
7097 printf ("%*send_file\n", level, "");
7098 /* Nothing more to do. */
7102 // XXX gcc seems to generate files with a trailing zero.
7103 if (unlikely (opcode != 0 || readp != readendp))
7104 printf ("%*s*** invalid opcode %u\n", level, "", opcode);
7112 print_debug_macro_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
7113 Ebl *ebl, GElf_Ehdr *ehdr,
7114 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
7117 \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
7118 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
7119 (uint64_t) shdr->sh_offset);
7120 putc_unlocked ('\n', stdout);
7122 Elf_Data *data = dbg->sectiondata[IDX_debug_macro];
7123 if (unlikely (data == NULL || data->d_buf == NULL))
7125 error (0, 0, gettext ("cannot get macro information section data: %s"),
7130 /* Get the source file information for all CUs. Uses same
7131 datastructure as macinfo. But uses offset field to directly
7132 match .debug_line offset. And just stored in a list. */
7136 struct mac_culist *culist = NULL;
7138 while (dwarf_nextcu (dbg, offset = ncu, &ncu, &hsize, NULL, NULL, NULL) == 0)
7141 if (dwarf_offdie (dbg, offset + hsize, &cudie) == NULL)
7144 Dwarf_Attribute attr;
7145 if (dwarf_attr (&cudie, DW_AT_stmt_list, &attr) == NULL)
7149 if (dwarf_formudata (&attr, &lineoff) != 0)
7152 struct mac_culist *newp = (struct mac_culist *) alloca (sizeof (*newp));
7154 newp->offset = lineoff;
7156 newp->next = culist;
7161 const unsigned char *readp = (const unsigned char *) data->d_buf;
7162 const unsigned char *readendp = readp + data->d_size;
7164 while (readp < readendp)
7166 printf (gettext (" Offset: 0x%" PRIx64 "\n"),
7167 (uint64_t) (readp - (const unsigned char *) data->d_buf));
7169 // Header, 2 byte version, 1 byte flag, optional .debug_line offset,
7170 // optional vendor extension macro entry table.
7171 if (readp + 2 > readendp)
7174 error (0, 0, gettext ("invalid data"));
7177 const uint16_t vers = read_2ubyte_unaligned_inc (dbg, readp);
7178 printf (gettext (" Version: %" PRIu16 "\n"), vers);
7180 // Version 4 is the GNU extension for DWARF4. DWARF5 will use version
7181 // 5 when it gets standardized.
7184 printf (gettext (" unknown version, cannot parse section\n"));
7188 if (readp + 1 > readendp)
7190 const unsigned char flag = *readp++;
7191 printf (gettext (" Flag: 0x%" PRIx8 "\n"), flag);
7193 unsigned int offset_len = (flag & 0x01) ? 8 : 4;
7194 printf (gettext (" Offset length: %" PRIu8 "\n"), offset_len);
7195 Dwarf_Off line_offset = -1;
7198 if (offset_len == 8)
7199 line_offset = read_8ubyte_unaligned_inc (dbg, readp);
7201 line_offset = read_4ubyte_unaligned_inc (dbg, readp);
7202 printf (gettext (" .debug_line offset: 0x%" PRIx64 "\n"),
7206 const unsigned char *vendor[DW_MACRO_GNU_hi_user - DW_MACRO_GNU_lo_user];
7207 memset (vendor, 0, sizeof vendor);
7210 // 1 byte length, for each item, 1 byte opcode, uleb128 number
7211 // of arguments, for each argument 1 byte form code.
7212 if (readp + 1 > readendp)
7214 unsigned int tlen = *readp++;
7215 printf (gettext (" extension opcode table, %" PRIu8 " items:\n"),
7217 for (unsigned int i = 0; i < tlen; i++)
7219 if (readp + 1 > readendp)
7221 unsigned int opcode = *readp++;
7222 printf (gettext (" [%" PRIx8 "]"), opcode);
7223 if (opcode < DW_MACRO_GNU_lo_user
7224 || opcode > DW_MACRO_GNU_hi_user)
7226 // Record the start of description for this vendor opcode.
7227 // uleb128 nr args, 1 byte per arg form.
7228 vendor[opcode - DW_MACRO_GNU_lo_user] = readp;
7229 if (readp + 1 > readendp)
7231 unsigned int args = *readp++;
7234 printf (gettext (" %" PRIu8 " arguments:"), args);
7237 if (readp + 1 > readendp)
7239 unsigned int form = *readp++;
7240 printf (" %s", dwarf_form_string (form));
7241 if (form != DW_FORM_data1
7242 && form != DW_FORM_data2
7243 && form != DW_FORM_data4
7244 && form != DW_FORM_data8
7245 && form != DW_FORM_sdata
7246 && form != DW_FORM_udata
7247 && form != DW_FORM_block
7248 && form != DW_FORM_block1
7249 && form != DW_FORM_block2
7250 && form != DW_FORM_block4
7251 && form != DW_FORM_flag
7252 && form != DW_FORM_string
7253 && form != DW_FORM_strp
7254 && form != DW_FORM_sec_offset)
7258 putchar_unlocked (',');
7262 printf (gettext (" no arguments."));
7263 putchar_unlocked ('\n');
7266 putchar_unlocked ('\n');
7269 if (readp + 1 > readendp)
7271 unsigned int opcode = *readp++;
7275 unsigned int u128_2;
7276 const unsigned char *endp;
7281 case DW_MACRO_GNU_start_file:
7282 get_uleb128 (u128, readp, readendp);
7283 if (readp >= readendp)
7285 get_uleb128 (u128_2, readp, readendp);
7287 /* Find the CU DIE that matches this line offset. */
7288 const char *fname = "???";
7289 if (line_offset != (Dwarf_Off) -1)
7291 struct mac_culist *cu = culist;
7292 while (cu != NULL && line_offset != cu->offset)
7296 if (cu->files == NULL
7297 && dwarf_getsrcfiles (&cu->die, &cu->files,
7299 cu->files = (Dwarf_Files *) -1l;
7301 if (cu->files != (Dwarf_Files *) -1l)
7302 fname = (dwarf_filesrc (cu->files, u128_2,
7303 NULL, NULL) ?: "???");
7306 printf ("%*sstart_file %u, [%u] %s\n",
7307 level, "", u128, u128_2, fname);
7311 case DW_MACRO_GNU_end_file:
7313 printf ("%*send_file\n", level, "");
7316 case DW_MACRO_GNU_define:
7317 get_uleb128 (u128, readp, readendp);
7318 endp = memchr (readp, '\0', readendp - readp);
7321 printf ("%*s#define %s, line %u\n",
7322 level, "", readp, u128);
7326 case DW_MACRO_GNU_undef:
7327 get_uleb128 (u128, readp, readendp);
7328 endp = memchr (readp, '\0', readendp - readp);
7331 printf ("%*s#undef %s, line %u\n",
7332 level, "", readp, u128);
7336 case DW_MACRO_GNU_define_indirect:
7337 get_uleb128 (u128, readp, readendp);
7338 if (readp + offset_len > readendp)
7340 if (offset_len == 8)
7341 off = read_8ubyte_unaligned_inc (dbg, readp);
7343 off = read_4ubyte_unaligned_inc (dbg, readp);
7344 printf ("%*s#define %s, line %u (indirect)\n",
7345 level, "", dwarf_getstring (dbg, off, NULL), u128);
7348 case DW_MACRO_GNU_undef_indirect:
7349 get_uleb128 (u128, readp, readendp);
7350 if (readp + offset_len > readendp)
7352 if (offset_len == 8)
7353 off = read_8ubyte_unaligned_inc (dbg, readp);
7355 off = read_4ubyte_unaligned_inc (dbg, readp);
7356 printf ("%*s#undef %s, line %u (indirect)\n",
7357 level, "", dwarf_getstring (dbg, off, NULL), u128);
7360 case DW_MACRO_GNU_transparent_include:
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#include offset 0x%" PRIx64 "\n",
7372 printf ("%*svendor opcode 0x%" PRIx8, level, "", opcode);
7373 if (opcode < DW_MACRO_GNU_lo_user
7374 || opcode > DW_MACRO_GNU_lo_user
7375 || vendor[opcode - DW_MACRO_GNU_lo_user] == NULL)
7378 const unsigned char *op_desc;
7379 op_desc = vendor[opcode - DW_MACRO_GNU_lo_user];
7381 // Just skip the arguments, we cannot really interpret them,
7382 // but print as much as we can.
7383 unsigned int args = *op_desc++;
7386 unsigned int form = *op_desc++;
7391 if (readp + 1 > readendp)
7394 printf (" %" PRIx8, (unsigned int) val);
7398 if (readp + 2 > readendp)
7400 val = read_2ubyte_unaligned_inc (dbg, readp);
7401 printf(" %" PRIx16, (unsigned int) val);
7405 if (readp + 4 > readendp)
7407 val = read_4ubyte_unaligned_inc (dbg, readp);
7408 printf (" %" PRIx32, (unsigned int) val);
7412 if (readp + 8 > readendp)
7414 val = read_8ubyte_unaligned_inc (dbg, readp);
7415 printf (" %" PRIx64, val);
7419 get_sleb128 (val, readp, readendp);
7420 printf (" %" PRIx64, val);
7424 get_uleb128 (val, readp, readendp);
7425 printf (" %" PRIx64, val);
7429 get_uleb128 (val, readp, readendp);
7430 printf (" block[%" PRIu64 "]", val);
7431 if (readp + val > readendp)
7436 case DW_FORM_block1:
7437 if (readp + 1 > readendp)
7440 printf (" block[%" PRIu64 "]", val);
7441 if (readp + val > readendp)
7445 case DW_FORM_block2:
7446 if (readp + 2 > readendp)
7448 val = read_2ubyte_unaligned_inc (dbg, readp);
7449 printf (" block[%" PRIu64 "]", val);
7450 if (readp + val > readendp)
7454 case DW_FORM_block4:
7455 if (readp + 2 > readendp)
7457 val =read_4ubyte_unaligned_inc (dbg, readp);
7458 printf (" block[%" PRIu64 "]", val);
7459 if (readp + val > readendp)
7464 if (readp + 1 > readendp)
7467 printf (" %s", nl_langinfo (val != 0 ? YESSTR : NOSTR));
7470 case DW_FORM_string:
7471 endp = memchr (readp, '\0', readendp - readp);
7474 printf (" %s", readp);
7479 if (readp + offset_len > readendp)
7481 if (offset_len == 8)
7482 val = read_8ubyte_unaligned_inc (dbg, readp);
7484 val = read_4ubyte_unaligned_inc (dbg, readp);
7485 printf (" %s", dwarf_getstring (dbg, val, NULL));
7488 case DW_FORM_sec_offset:
7489 if (readp + offset_len > readendp)
7491 if (offset_len == 8)
7492 val = read_8ubyte_unaligned_inc (dbg, readp);
7494 val = read_4ubyte_unaligned_inc (dbg, readp);
7495 printf (" %" PRIx64, val);
7499 error (0, 0, gettext ("vendor opcode not verified?"));
7505 putchar_unlocked (',');
7507 putchar_unlocked ('\n');
7510 if (readp + 1 > readendp)
7514 putchar_unlocked ('\n');
7520 /* Callback for printing global names. */
7522 print_pubnames (Dwarf *dbg __attribute__ ((unused)), Dwarf_Global *global,
7525 int *np = (int *) arg;
7527 printf (gettext (" [%5d] DIE offset: %6" PRId64
7528 ", CU DIE offset: %6" PRId64 ", name: %s\n"),
7529 (*np)++, global->die_offset, global->cu_offset, global->name);
7535 /* Print the known exported symbols in the DWARF section '.debug_pubnames'. */
7537 print_debug_pubnames_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
7538 Ebl *ebl, GElf_Ehdr *ehdr,
7539 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
7541 printf (gettext ("\nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
7542 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
7543 (uint64_t) shdr->sh_offset);
7546 (void) dwarf_getpubnames (dbg, print_pubnames, &n, 0);
7549 /* Print the content of the DWARF string section '.debug_str'. */
7551 print_debug_str_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
7552 Ebl *ebl, GElf_Ehdr *ehdr,
7553 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
7555 const size_t sh_size = (dbg->sectiondata[IDX_debug_str] ?
7556 dbg->sectiondata[IDX_debug_str]->d_size : 0);
7558 /* Compute floor(log16(shdr->sh_size)). */
7559 GElf_Addr tmp = sh_size;
7566 digits = MAX (4, digits);
7568 printf (gettext ("\nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"
7571 section_name (ebl, ehdr, shdr), (uint64_t) shdr->sh_offset,
7572 /* TRANS: the debugstr| prefix makes the string unique. */
7573 digits + 2, sgettext ("debugstr|Offset"));
7575 Dwarf_Off offset = 0;
7576 while (offset < sh_size)
7579 const char *str = dwarf_getstring (dbg, offset, &len);
7580 if (unlikely (str == NULL))
7582 printf (gettext (" *** error while reading strings: %s\n"),
7587 printf (" [%*" PRIx64 "] \"%s\"\n", digits, (uint64_t) offset, str);
7594 /* Print the content of the call frame search table section
7597 print_debug_frame_hdr_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
7598 Ebl *ebl __attribute__ ((unused)),
7599 GElf_Ehdr *ehdr __attribute__ ((unused)),
7600 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
7603 \nCall frame search table section [%2zu] '.eh_frame_hdr':\n"),
7606 Elf_Data *data = elf_rawdata (scn, NULL);
7608 if (unlikely (data == NULL))
7610 error (0, 0, gettext ("cannot get %s content: %s"),
7611 ".eh_frame_hdr", elf_errmsg (-1));
7615 const unsigned char *readp = data->d_buf;
7616 const unsigned char *const dataend = ((unsigned char *) data->d_buf
7619 if (unlikely (readp + 4 > dataend))
7622 error (0, 0, gettext ("invalid data"));
7626 unsigned int version = *readp++;
7627 unsigned int eh_frame_ptr_enc = *readp++;
7628 unsigned int fde_count_enc = *readp++;
7629 unsigned int table_enc = *readp++;
7631 printf (" version: %u\n"
7632 " eh_frame_ptr_enc: %#x ",
7633 version, eh_frame_ptr_enc);
7634 print_encoding_base ("", eh_frame_ptr_enc);
7635 printf (" fde_count_enc: %#x ", fde_count_enc);
7636 print_encoding_base ("", fde_count_enc);
7637 printf (" table_enc: %#x ", table_enc);
7638 print_encoding_base ("", table_enc);
7640 uint64_t eh_frame_ptr = 0;
7641 if (eh_frame_ptr_enc != DW_EH_PE_omit)
7643 readp = read_encoded (eh_frame_ptr_enc, readp, dataend, &eh_frame_ptr,
7645 if (unlikely (readp == NULL))
7648 printf (" eh_frame_ptr: %#" PRIx64, eh_frame_ptr);
7649 if ((eh_frame_ptr_enc & 0x70) == DW_EH_PE_pcrel)
7650 printf (" (offset: %#" PRIx64 ")",
7651 /* +4 because of the 4 byte header of the section. */
7652 (uint64_t) shdr->sh_offset + 4 + eh_frame_ptr);
7654 putchar_unlocked ('\n');
7657 uint64_t fde_count = 0;
7658 if (fde_count_enc != DW_EH_PE_omit)
7660 readp = read_encoded (fde_count_enc, readp, dataend, &fde_count, dbg);
7661 if (unlikely (readp == NULL))
7664 printf (" fde_count: %" PRIu64 "\n", fde_count);
7667 if (fde_count == 0 || table_enc == DW_EH_PE_omit)
7672 /* Optimize for the most common case. */
7673 if (table_enc == (DW_EH_PE_datarel | DW_EH_PE_sdata4))
7674 while (fde_count > 0 && readp + 8 <= dataend)
7676 int32_t initial_location = read_4sbyte_unaligned_inc (dbg, readp);
7677 uint64_t initial_offset = ((uint64_t) shdr->sh_offset
7678 + (int64_t) initial_location);
7679 int32_t address = read_4sbyte_unaligned_inc (dbg, readp);
7680 // XXX Possibly print symbol name or section offset for initial_offset
7681 printf (" %#" PRIx32 " (offset: %#6" PRIx64 ") -> %#" PRIx32
7682 " fde=[%6" PRIx64 "]\n",
7683 initial_location, initial_offset,
7684 address, address - (eh_frame_ptr + 4));
7687 while (0 && readp < dataend)
7694 /* Print the content of the exception handling table section
7697 print_debug_exception_table (Dwfl_Module *dwflmod __attribute__ ((unused)),
7698 Ebl *ebl __attribute__ ((unused)),
7699 GElf_Ehdr *ehdr __attribute__ ((unused)),
7701 GElf_Shdr *shdr __attribute__ ((unused)),
7702 Dwarf *dbg __attribute__ ((unused)))
7705 \nException handling table section [%2zu] '.gcc_except_table':\n"),
7708 Elf_Data *data = elf_rawdata (scn, NULL);
7710 if (unlikely (data == NULL))
7712 error (0, 0, gettext ("cannot get %s content: %s"),
7713 ".gcc_except_table", elf_errmsg (-1));
7717 const unsigned char *readp = data->d_buf;
7718 const unsigned char *const dataend = readp + data->d_size;
7720 if (unlikely (readp + 1 > dataend))
7723 error (0, 0, gettext ("invalid data"));
7726 unsigned int lpstart_encoding = *readp++;
7727 printf (gettext (" LPStart encoding: %#x "), lpstart_encoding);
7728 print_encoding_base ("", lpstart_encoding);
7729 if (lpstart_encoding != DW_EH_PE_omit)
7732 readp = read_encoded (lpstart_encoding, readp, dataend, &lpstart, dbg);
7733 printf (" LPStart: %#" PRIx64 "\n", lpstart);
7736 if (unlikely (readp + 1 > dataend))
7738 unsigned int ttype_encoding = *readp++;
7739 printf (gettext (" TType encoding: %#x "), ttype_encoding);
7740 print_encoding_base ("", ttype_encoding);
7741 const unsigned char *ttype_base = NULL;
7742 if (ttype_encoding != DW_EH_PE_omit)
7744 unsigned int ttype_base_offset;
7745 get_uleb128 (ttype_base_offset, readp, dataend);
7746 printf (" TType base offset: %#x\n", ttype_base_offset);
7747 if ((size_t) (dataend - readp) > ttype_base_offset)
7748 ttype_base = readp + ttype_base_offset;
7751 if (unlikely (readp + 1 > dataend))
7753 unsigned int call_site_encoding = *readp++;
7754 printf (gettext (" Call site encoding: %#x "), call_site_encoding);
7755 print_encoding_base ("", call_site_encoding);
7756 unsigned int call_site_table_len;
7757 get_uleb128 (call_site_table_len, readp, dataend);
7759 const unsigned char *const action_table = readp + call_site_table_len;
7760 if (unlikely (action_table > dataend))
7763 unsigned int max_action = 0;
7764 while (readp < action_table)
7767 puts (gettext ("\n Call site table:"));
7769 uint64_t call_site_start;
7770 readp = read_encoded (call_site_encoding, readp, dataend,
7771 &call_site_start, dbg);
7772 uint64_t call_site_length;
7773 readp = read_encoded (call_site_encoding, readp, dataend,
7774 &call_site_length, dbg);
7775 uint64_t landing_pad;
7776 readp = read_encoded (call_site_encoding, readp, dataend,
7778 unsigned int action;
7779 get_uleb128 (action, readp, dataend);
7780 max_action = MAX (action, max_action);
7781 printf (gettext (" [%4u] Call site start: %#" PRIx64 "\n"
7782 " Call site length: %" PRIu64 "\n"
7783 " Landing pad: %#" PRIx64 "\n"
7785 u++, call_site_start, call_site_length, landing_pad, action);
7787 if (readp != action_table)
7790 unsigned int max_ar_filter = 0;
7793 puts ("\n Action table:");
7795 if ((size_t) (dataend - action_table) < max_action + 1)
7797 fputs (gettext (" <INVALID DATA>\n"), stdout);
7801 const unsigned char *const action_table_end
7802 = action_table + max_action + 1;
7808 get_sleb128 (ar_filter, readp, action_table_end);
7809 if (ar_filter > 0 && (unsigned int) ar_filter > max_ar_filter)
7810 max_ar_filter = ar_filter;
7812 get_sleb128 (ar_disp, readp, action_table_end);
7814 printf (" [%4u] ar_filter: % d\n"
7816 u, ar_filter, ar_disp);
7817 if (abs (ar_disp) & 1)
7818 printf (" -> [%4u]\n", u + (ar_disp + 1) / 2);
7819 else if (ar_disp != 0)
7822 putchar_unlocked ('\n');
7825 while (readp < action_table_end);
7828 if (max_ar_filter > 0 && ttype_base != NULL)
7830 puts ("\n TType table:");
7832 // XXX Not *4, size of encoding;
7833 switch (ttype_encoding & 7)
7835 case DW_EH_PE_udata2:
7836 case DW_EH_PE_sdata2:
7837 readp = ttype_base - max_ar_filter * 2;
7839 case DW_EH_PE_udata4:
7840 case DW_EH_PE_sdata4:
7841 readp = ttype_base - max_ar_filter * 4;
7843 case DW_EH_PE_udata8:
7844 case DW_EH_PE_sdata8:
7845 readp = ttype_base - max_ar_filter * 8;
7848 error (1, 0, gettext ("invalid TType encoding"));
7854 readp = read_encoded (ttype_encoding, readp, ttype_base, &ttype,
7856 printf (" [%4u] %#" PRIx64 "\n", max_ar_filter--, ttype);
7858 while (readp < ttype_base);
7862 /* Print the content of the '.gdb_index' section.
7863 http://sourceware.org/gdb/current/onlinedocs/gdb/Index-Section-Format.html
7866 print_gdb_index_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
7867 Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
7869 printf (gettext ("\nGDB section [%2zu] '%s' at offset %#" PRIx64
7870 " contains %" PRId64 " bytes :\n"),
7871 elf_ndxscn (scn), section_name (ebl, ehdr, shdr),
7872 (uint64_t) shdr->sh_offset, (uint64_t) shdr->sh_size);
7874 Elf_Data *data = elf_rawdata (scn, NULL);
7876 if (unlikely (data == NULL))
7878 error (0, 0, gettext ("cannot get %s content: %s"),
7879 ".gdb_index", elf_errmsg (-1));
7883 // .gdb_index is always in little endian.
7884 Dwarf dummy_dbg = { .other_byte_order = MY_ELFDATA != ELFDATA2LSB };
7887 const unsigned char *readp = data->d_buf;
7888 const unsigned char *const dataend = readp + data->d_size;
7890 if (unlikely (readp + 4 > dataend))
7893 error (0, 0, gettext ("invalid data"));
7897 int32_t vers = read_4ubyte_unaligned (dbg, readp);
7898 printf (gettext (" Version: %" PRId32 "\n"), vers);
7900 // The only difference between version 4 and version 5 is the
7901 // hash used for generating the table. Version 6 contains symbols
7902 // for inlined functions, older versions didn't. Version 7 adds
7903 // symbol kinds. Version 8 just indicates that it correctly includes
7905 if (vers < 4 || vers > 8)
7907 printf (gettext (" unknown version, cannot parse section\n"));
7912 if (unlikely (readp + 4 > dataend))
7915 uint32_t cu_off = read_4ubyte_unaligned (dbg, readp);
7916 printf (gettext (" CU offset: %#" PRIx32 "\n"), cu_off);
7919 if (unlikely (readp + 4 > dataend))
7922 uint32_t tu_off = read_4ubyte_unaligned (dbg, readp);
7923 printf (gettext (" TU offset: %#" PRIx32 "\n"), tu_off);
7926 if (unlikely (readp + 4 > dataend))
7929 uint32_t addr_off = read_4ubyte_unaligned (dbg, readp);
7930 printf (gettext (" address offset: %#" PRIx32 "\n"), addr_off);
7933 if (unlikely (readp + 4 > dataend))
7936 uint32_t sym_off = read_4ubyte_unaligned (dbg, readp);
7937 printf (gettext (" symbol offset: %#" PRIx32 "\n"), sym_off);
7940 if (unlikely (readp + 4 > dataend))
7943 uint32_t const_off = read_4ubyte_unaligned (dbg, readp);
7944 printf (gettext (" constant offset: %#" PRIx32 "\n"), const_off);
7946 readp = data->d_buf + cu_off;
7948 const unsigned char *nextp = data->d_buf + tu_off;
7949 size_t cu_nr = (nextp - readp) / 16;
7951 printf (gettext ("\n CU list at offset %#" PRIx32
7952 " contains %zu entries:\n"),
7956 while (readp + 16 <= dataend && n < cu_nr)
7958 uint64_t off = read_8ubyte_unaligned (dbg, readp);
7961 uint64_t len = read_8ubyte_unaligned (dbg, readp);
7964 printf (" [%4zu] start: %0#8" PRIx64
7965 ", length: %5" PRIu64 "\n", n, off, len);
7969 readp = data->d_buf + tu_off;
7970 nextp = data->d_buf + addr_off;
7971 size_t tu_nr = (nextp - readp) / 24;
7973 printf (gettext ("\n TU list at offset %#" PRIx32
7974 " contains %zu entries:\n"),
7978 while (readp + 24 <= dataend && n < tu_nr)
7980 uint64_t off = read_8ubyte_unaligned (dbg, readp);
7983 uint64_t type = read_8ubyte_unaligned (dbg, readp);
7986 uint64_t sig = read_8ubyte_unaligned (dbg, readp);
7989 printf (" [%4zu] CU offset: %5" PRId64
7990 ", type offset: %5" PRId64
7991 ", signature: %0#8" PRIx64 "\n", n, off, type, sig);
7995 readp = data->d_buf + addr_off;
7996 nextp = data->d_buf + sym_off;
7997 size_t addr_nr = (nextp - readp) / 20;
7999 printf (gettext ("\n Address list at offset %#" PRIx32
8000 " contains %zu entries:\n"),
8004 while (readp + 20 <= dataend && n < addr_nr)
8006 uint64_t low = read_8ubyte_unaligned (dbg, readp);
8009 uint64_t high = read_8ubyte_unaligned (dbg, readp);
8012 uint32_t idx = read_4ubyte_unaligned (dbg, readp);
8015 char *l = format_dwarf_addr (dwflmod, 8, low, low);
8016 char *h = format_dwarf_addr (dwflmod, 8, high - 1, high);
8017 printf (" [%4zu] %s..%s, CU index: %5" PRId32 "\n",
8024 readp = data->d_buf + sym_off;
8025 nextp = data->d_buf + const_off;
8026 size_t sym_nr = (nextp - readp) / 8;
8028 printf (gettext ("\n Symbol table at offset %#" PRIx32
8029 " contains %zu slots:\n"),
8033 while (readp + 8 <= dataend && n < sym_nr)
8035 uint32_t name = read_4ubyte_unaligned (dbg, readp);
8038 uint32_t vector = read_4ubyte_unaligned (dbg, readp);
8041 if (name != 0 || vector != 0)
8043 const unsigned char *sym = data->d_buf + const_off + name;
8044 if (unlikely (sym > dataend
8045 || memchr (sym, '\0', dataend - sym) == NULL))
8048 printf (" [%4zu] symbol: %s, CUs: ", n, sym);
8050 const unsigned char *readcus = data->d_buf + const_off + vector;
8051 if (unlikely (readcus + 4 > dataend))
8053 uint32_t cus = read_4ubyte_unaligned (dbg, readcus);
8056 uint32_t cu_kind, cu, kind;
8059 if (unlikely (readcus + 4 > dataend))
8061 cu_kind = read_4ubyte_unaligned (dbg, readcus);
8062 cu = cu_kind & ((1 << 24) - 1);
8063 kind = (cu_kind >> 28) & 7;
8064 is_static = cu_kind & (1U << 31);
8066 printf ("%" PRId32 "T", cu - (uint32_t) cu_nr);
8068 printf ("%" PRId32, cu);
8087 printf ("unknown-0x%" PRIx32, kind);
8090 printf (":%c)", (is_static ? 'S' : 'G'));
8102 print_debug (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr)
8104 /* Before we start the real work get a debug context descriptor. */
8106 Dwarf *dbg = dwfl_module_getdwarf (dwflmod, &dwbias);
8110 .other_byte_order = MY_ELFDATA != ehdr->e_ident[EI_DATA]
8114 if ((print_debug_sections & ~section_exception) != 0)
8115 error (0, 0, gettext ("cannot get debug context descriptor: %s"),
8117 if ((print_debug_sections & section_exception) == 0)
8122 /* Get the section header string table index. */
8124 if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0))
8125 error (EXIT_FAILURE, 0,
8126 gettext ("cannot get section header string table index"));
8128 /* Look through all the sections for the debugging sections to print. */
8129 Elf_Scn *scn = NULL;
8130 while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
8133 GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
8135 if (shdr != NULL && shdr->sh_type == SHT_PROGBITS)
8140 enum section_e bitmask;
8141 void (*fp) (Dwfl_Module *, Ebl *,
8142 GElf_Ehdr *, Elf_Scn *, GElf_Shdr *, Dwarf *);
8143 } debug_sections[] =
8145 #define NEW_SECTION(name) \
8146 { ".debug_" #name, section_##name, print_debug_##name##_section }
8147 NEW_SECTION (abbrev),
8148 NEW_SECTION (aranges),
8149 NEW_SECTION (frame),
8151 NEW_SECTION (types),
8154 NEW_SECTION (pubnames),
8156 NEW_SECTION (macinfo),
8157 NEW_SECTION (macro),
8158 NEW_SECTION (ranges),
8159 { ".eh_frame", section_frame | section_exception,
8160 print_debug_frame_section },
8161 { ".eh_frame_hdr", section_frame | section_exception,
8162 print_debug_frame_hdr_section },
8163 { ".gcc_except_table", section_frame | section_exception,
8164 print_debug_exception_table },
8165 { ".gdb_index", section_gdb_index, print_gdb_index_section }
8167 const int ndebug_sections = (sizeof (debug_sections)
8168 / sizeof (debug_sections[0]));
8169 const char *name = elf_strptr (ebl->elf, shstrndx,
8175 for (n = 0; n < ndebug_sections; ++n)
8176 if (strcmp (name, debug_sections[n].name) == 0
8178 || (name[0] == '.' && name[1] == 'z'
8179 && debug_sections[n].name[1] == 'd'
8180 && strcmp (&name[2], &debug_sections[n].name[1]) == 0)
8184 if ((print_debug_sections | implicit_debug_sections)
8185 & debug_sections[n].bitmask)
8186 debug_sections[n].fp (dwflmod, ebl, ehdr, scn, shdr, dbg);
8192 reset_listptr (&known_loclistptr);
8193 reset_listptr (&known_rangelistptr);
8197 #define ITEM_INDENT 4
8198 #define WRAP_COLUMN 75
8200 /* Print "NAME: FORMAT", wrapping when output text would make the line
8201 exceed WRAP_COLUMN. Unpadded numbers look better for the core items
8202 but this function is also used for registers which should be printed
8203 aligned. Fortunately registers output uses fixed fields width (such
8204 as %11d) for the alignment.
8206 Line breaks should not depend on the particular values although that
8207 may happen in some cases of the core items. */
8210 __attribute__ ((format (printf, 6, 7)))
8211 print_core_item (unsigned int colno, char sep, unsigned int wrap,
8212 size_t name_width, const char *name, const char *format, ...)
8214 size_t len = strlen (name);
8215 if (name_width < len)
8220 va_start (ap, format);
8221 int out_len = vasprintf (&out, format, ap);
8224 error (EXIT_FAILURE, 0, _("memory exhausted"));
8226 size_t n = name_width + sizeof ": " - 1 + out_len;
8230 printf ("%*s", ITEM_INDENT, "");
8231 colno = ITEM_INDENT + n;
8233 else if (colno + 2 + n < wrap)
8235 printf ("%c ", sep);
8240 printf ("\n%*s", ITEM_INDENT, "");
8241 colno = ITEM_INDENT + n;
8244 printf ("%s: %*s%s", name, (int) (name_width - len), "", out);
8252 convert (Elf *core, Elf_Type type, uint_fast16_t count,
8253 void *value, const void *data, size_t size)
8255 Elf_Data valuedata =
8259 .d_size = size ?: gelf_fsize (core, type, count, EV_CURRENT),
8260 .d_version = EV_CURRENT,
8265 .d_buf = (void *) data,
8266 .d_size = valuedata.d_size,
8267 .d_version = EV_CURRENT,
8270 Elf_Data *d = (gelf_getclass (core) == ELFCLASS32
8271 ? elf32_xlatetom : elf64_xlatetom)
8272 (&valuedata, &indata, elf_getident (core, NULL)[EI_DATA]);
8274 error (EXIT_FAILURE, 0,
8275 gettext ("cannot convert core note data: %s"), elf_errmsg (-1));
8277 return data + indata.d_size;
8280 typedef uint8_t GElf_Byte;
8283 handle_core_item (Elf *core, const Ebl_Core_Item *item, const void *desc,
8284 unsigned int colno, size_t *repeated_size)
8286 uint_fast16_t count = item->count ?: 1;
8289 DO_TYPE (BYTE, Byte, "0x%.2" PRIx8, "%" PRId8); \
8290 DO_TYPE (HALF, Half, "0x%.4" PRIx16, "%" PRId16); \
8291 DO_TYPE (WORD, Word, "0x%.8" PRIx32, "%" PRId32); \
8292 DO_TYPE (SWORD, Sword, "%" PRId32, "%" PRId32); \
8293 DO_TYPE (XWORD, Xword, "0x%.16" PRIx64, "%" PRId64); \
8294 DO_TYPE (SXWORD, Sxword, "%" PRId64, "%" PRId64)
8296 #define DO_TYPE(NAME, Name, hex, dec) GElf_##Name Name[count]
8297 union { TYPES; } value;
8300 void *data = &value;
8301 size_t size = gelf_fsize (core, item->type, count, EV_CURRENT);
8302 size_t convsize = size;
8303 if (repeated_size != NULL)
8305 if (*repeated_size > size && (item->format == 'b' || item->format == 'B'))
8307 data = alloca (*repeated_size);
8308 count *= *repeated_size / size;
8309 convsize = count * size;
8310 *repeated_size -= convsize;
8312 else if (item->count != 0 || item->format != '\n')
8313 *repeated_size -= size;
8316 convert (core, item->type, count, data, desc + item->offset, convsize);
8318 Elf_Type type = item->type;
8319 if (type == ELF_T_ADDR)
8320 type = gelf_getclass (core) == ELFCLASS32 ? ELF_T_WORD : ELF_T_XWORD;
8322 switch (item->format)
8325 assert (count == 1);
8328 #define DO_TYPE(NAME, Name, hex, dec) \
8329 case ELF_T_##NAME: \
8330 colno = print_core_item (colno, ',', WRAP_COLUMN, \
8331 0, item->name, dec, value.Name[0]); \
8341 assert (count == 1);
8344 #define DO_TYPE(NAME, Name, hex, dec) \
8345 case ELF_T_##NAME: \
8346 colno = print_core_item (colno, ',', WRAP_COLUMN, \
8347 0, item->name, hex, value.Name[0]); \
8358 assert (size % sizeof (unsigned int) == 0);
8359 unsigned int nbits = count * size * 8;
8360 unsigned int pop = 0;
8361 for (const unsigned int *i = data; (void *) i < data + count * size; ++i)
8362 pop += __builtin_popcount (*i);
8363 bool negate = pop > nbits / 2;
8364 const unsigned int bias = item->format == 'b';
8367 char printed[(negate ? nbits - pop : pop) * 16 + 1];
8371 if (BYTE_ORDER != LITTLE_ENDIAN && size > sizeof (unsigned int))
8373 assert (size == sizeof (unsigned int) * 2);
8374 for (unsigned int *i = data;
8375 (void *) i < data + count * size; i += 2)
8377 unsigned int w = i[1];
8383 unsigned int lastbit = 0;
8384 unsigned int run = 0;
8385 for (const unsigned int *i = data;
8386 (void *) i < data + count * size; ++i)
8388 unsigned int bit = ((void *) i - data) * 8;
8389 unsigned int w = negate ? ~*i : *i;
8396 if (lastbit != 0 && lastbit + 1 == bit)
8401 p += sprintf (p, "%u", bit - bias);
8403 p += sprintf (p, ",%u", bit - bias);
8405 p += sprintf (p, "-%u,%u", lastbit - bias, bit - bias);
8412 if (lastbit > 0 && run > 0 && lastbit + 1 != nbits)
8413 p += sprintf (p, "-%u", lastbit - bias);
8415 colno = print_core_item (colno, ',', WRAP_COLUMN, 0, item->name,
8416 negate ? "~<%s>" : "<%s>", printed);
8421 case (char) ('T'|0x80):
8422 assert (count == 2);
8427 #define DO_TYPE(NAME, Name, hex, dec) \
8428 case ELF_T_##NAME: \
8429 sec = value.Name[0]; \
8430 usec = value.Name[1]; \
8437 if (unlikely (item->format == (char) ('T'|0x80)))
8439 /* This is a hack for an ill-considered 64-bit ABI where
8440 tv_usec is actually a 32-bit field with 32 bits of padding
8441 rounding out struct timeval. We've already converted it as
8442 a 64-bit field. For little-endian, this just means the
8443 high half is the padding; it's presumably zero, but should
8444 be ignored anyway. For big-endian, it means the 32-bit
8445 field went into the high half of USEC. */
8447 GElf_Ehdr *ehdr = gelf_getehdr (core, &ehdr_mem);
8448 if (likely (ehdr->e_ident[EI_DATA] == ELFDATA2MSB))
8453 colno = print_core_item (colno, ',', WRAP_COLUMN, 0, item->name,
8454 "%" PRIu64 ".%.6" PRIu64, sec, usec);
8458 assert (count == 1);
8459 colno = print_core_item (colno, ',', WRAP_COLUMN, 0, item->name,
8460 "%c", value.Byte[0]);
8464 colno = print_core_item (colno, ',', WRAP_COLUMN, 0, item->name,
8465 "%.*s", (int) count, value.Byte);
8469 /* This is a list of strings separated by '\n'. */
8470 assert (item->count == 0);
8471 assert (repeated_size != NULL);
8472 assert (item->name == NULL);
8473 if (unlikely (item->offset >= *repeated_size))
8476 const char *s = desc + item->offset;
8477 size = *repeated_size - item->offset;
8481 const char *eol = memchr (s, '\n', size);
8485 printf ("%*s%.*s\n", ITEM_INDENT, "", len, s);
8488 size -= eol + 1 - s;
8492 colno = WRAP_COLUMN;
8499 error (0, 0, "XXX not handling format '%c' for %s",
8500 item->format, item->name);
8510 /* Sort items by group, and by layout offset within each group. */
8512 compare_core_items (const void *a, const void *b)
8514 const Ebl_Core_Item *const *p1 = a;
8515 const Ebl_Core_Item *const *p2 = b;
8516 const Ebl_Core_Item *item1 = *p1;
8517 const Ebl_Core_Item *item2 = *p2;
8519 return ((item1->group == item2->group ? 0
8520 : strcmp (item1->group, item2->group))
8521 ?: (int) item1->offset - (int) item2->offset);
8524 /* Sort item groups by layout offset of the first item in the group. */
8526 compare_core_item_groups (const void *a, const void *b)
8528 const Ebl_Core_Item *const *const *p1 = a;
8529 const Ebl_Core_Item *const *const *p2 = b;
8530 const Ebl_Core_Item *const *group1 = *p1;
8531 const Ebl_Core_Item *const *group2 = *p2;
8532 const Ebl_Core_Item *item1 = *group1;
8533 const Ebl_Core_Item *item2 = *group2;
8535 return (int) item1->offset - (int) item2->offset;
8539 handle_core_items (Elf *core, const void *desc, size_t descsz,
8540 const Ebl_Core_Item *items, size_t nitems)
8544 unsigned int colno = 0;
8546 /* FORMAT '\n' makes sense to be present only as a single item as it
8547 processes all the data of a note. FORMATs 'b' and 'B' have a special case
8548 if present as a single item but they can be also processed with other
8550 if (nitems == 1 && (items[0].format == '\n' || items[0].format == 'b'
8551 || items[0].format == 'B'))
8553 assert (items[0].offset == 0);
8554 size_t size = descsz;
8555 colno = handle_core_item (core, items, desc, colno, &size);
8556 /* If SIZE is not zero here there is some remaining data. But we do not
8557 know how to process it anyway. */
8560 for (size_t i = 0; i < nitems; ++i)
8561 assert (items[i].format != '\n');
8563 /* Sort to collect the groups together. */
8564 const Ebl_Core_Item *sorted_items[nitems];
8565 for (size_t i = 0; i < nitems; ++i)
8566 sorted_items[i] = &items[i];
8567 qsort (sorted_items, nitems, sizeof sorted_items[0], &compare_core_items);
8569 /* Collect the unique groups and sort them. */
8570 const Ebl_Core_Item **groups[nitems];
8571 groups[0] = &sorted_items[0];
8573 for (size_t i = 1; i < nitems; ++i)
8574 if (sorted_items[i]->group != sorted_items[i - 1]->group
8575 && strcmp (sorted_items[i]->group, sorted_items[i - 1]->group))
8576 groups[ngroups++] = &sorted_items[i];
8577 qsort (groups, ngroups, sizeof groups[0], &compare_core_item_groups);
8579 /* Write out all the groups. */
8580 const void *last = desc;
8583 for (size_t i = 0; i < ngroups; ++i)
8585 for (const Ebl_Core_Item **item = groups[i];
8586 (item < &sorted_items[nitems]
8587 && ((*item)->group == groups[i][0]->group
8588 || !strcmp ((*item)->group, groups[i][0]->group)));
8590 colno = handle_core_item (core, *item, desc, colno, NULL);
8592 /* Force a line break at the end of the group. */
8593 colno = WRAP_COLUMN;
8599 /* This set of items consumed a certain amount of the note's data.
8600 If there is more data there, we have another unit of the same size.
8601 Loop to print that out too. */
8602 const Ebl_Core_Item *item = &items[nitems - 1];
8603 size_t eltsz = item->offset + gelf_fsize (core, item->type,
8604 item->count ?: 1, EV_CURRENT);
8613 while (descsz >= eltsz && !memcmp (desc, last, eltsz));
8617 /* For just one repeat, print it unabridged twice. */
8622 printf (gettext ("\n%*s... <repeats %u more times> ..."),
8623 ITEM_INDENT, "", reps);
8633 handle_bit_registers (const Ebl_Register_Location *regloc, const void *desc,
8636 desc += regloc->offset;
8644 handle_core_register (Ebl *ebl, Elf *core, int maxregname,
8645 const Ebl_Register_Location *regloc, const void *desc,
8648 if (regloc->bits % 8 != 0)
8649 return handle_bit_registers (regloc, desc, colno);
8651 desc += regloc->offset;
8653 for (int reg = regloc->regno; reg < regloc->regno + regloc->count; ++reg)
8655 char name[REGNAMESZ];
8658 register_info (ebl, reg, regloc, name, &bits, &type);
8661 BITS (8, BYTE, "%4" PRId8, "0x%.2" PRIx8); \
8662 BITS (16, HALF, "%6" PRId16, "0x%.4" PRIx16); \
8663 BITS (32, WORD, "%11" PRId32, " 0x%.8" PRIx32); \
8664 BITS (64, XWORD, "%20" PRId64, " 0x%.16" PRIx64)
8666 #define BITS(bits, xtype, sfmt, ufmt) \
8667 uint##bits##_t b##bits; int##bits##_t b##bits##s
8668 union { TYPES; uint64_t b128[2]; } value;
8673 case DW_ATE_unsigned:
8675 case DW_ATE_address:
8678 #define BITS(bits, xtype, sfmt, ufmt) \
8680 desc = convert (core, ELF_T_##xtype, 1, &value, desc, 0); \
8681 if (type == DW_ATE_signed) \
8682 colno = print_core_item (colno, ' ', WRAP_COLUMN, \
8684 sfmt, value.b##bits##s); \
8686 colno = print_core_item (colno, ' ', WRAP_COLUMN, \
8688 ufmt, value.b##bits); \
8694 assert (type == DW_ATE_unsigned);
8695 desc = convert (core, ELF_T_XWORD, 2, &value, desc, 0);
8696 int be = elf_getident (core, NULL)[EI_DATA] == ELFDATA2MSB;
8697 colno = print_core_item (colno, ' ', WRAP_COLUMN,
8699 "0x%.16" PRIx64 "%.16" PRIx64,
8700 value.b128[!be], value.b128[be]);
8710 /* Print each byte in hex, the whole thing in native byte order. */
8711 assert (bits % 8 == 0);
8712 const uint8_t *bytes = desc;
8714 char hex[bits / 4 + 1];
8715 hex[bits / 4] = '\0';
8717 if (elf_getident (core, NULL)[EI_DATA] == ELFDATA2LSB)
8719 bytes += bits / 8 - 1;
8723 for (char *h = hex; bits > 0; bits -= 8, idx += incr)
8725 *h++ = "0123456789abcdef"[bytes[idx] >> 4];
8726 *h++ = "0123456789abcdef"[bytes[idx] & 0xf];
8728 colno = print_core_item (colno, ' ', WRAP_COLUMN,
8729 maxregname, name, "0x%s", hex);
8732 desc += regloc->pad;
8741 struct register_info
8743 const Ebl_Register_Location *regloc;
8745 char name[REGNAMESZ];
8752 register_bitpos (const struct register_info *r)
8754 return (r->regloc->offset * 8
8755 + ((r->regno - r->regloc->regno)
8756 * (r->regloc->bits + r->regloc->pad * 8)));
8760 compare_sets_by_info (const struct register_info *r1,
8761 const struct register_info *r2)
8763 return ((int) r2->bits - (int) r1->bits
8764 ?: register_bitpos (r1) - register_bitpos (r2));
8767 /* Sort registers by set, and by size and layout offset within each set. */
8769 compare_registers (const void *a, const void *b)
8771 const struct register_info *r1 = a;
8772 const struct register_info *r2 = b;
8774 /* Unused elements sort last. */
8775 if (r1->regloc == NULL)
8776 return r2->regloc == NULL ? 0 : 1;
8777 if (r2->regloc == NULL)
8780 return ((r1->set == r2->set ? 0 : strcmp (r1->set, r2->set))
8781 ?: compare_sets_by_info (r1, r2));
8784 /* Sort register sets by layout offset of the first register in the set. */
8786 compare_register_sets (const void *a, const void *b)
8788 const struct register_info *const *p1 = a;
8789 const struct register_info *const *p2 = b;
8790 return compare_sets_by_info (*p1, *p2);
8794 handle_core_registers (Ebl *ebl, Elf *core, const void *desc,
8795 const Ebl_Register_Location *reglocs, size_t nregloc)
8800 ssize_t maxnreg = ebl_register_info (ebl, 0, NULL, 0, NULL, NULL, NULL, NULL);
8803 for (size_t i = 0; i < nregloc; ++i)
8804 if (maxnreg < reglocs[i].regno + reglocs[i].count)
8805 maxnreg = reglocs[i].regno + reglocs[i].count;
8806 assert (maxnreg > 0);
8809 struct register_info regs[maxnreg];
8810 memset (regs, 0, sizeof regs);
8812 /* Sort to collect the sets together. */
8814 for (size_t i = 0; i < nregloc; ++i)
8815 for (int reg = reglocs[i].regno;
8816 reg < reglocs[i].regno + reglocs[i].count;
8819 assert (reg < maxnreg);
8822 struct register_info *info = ®s[reg];
8823 info->regloc = ®locs[i];
8825 info->set = register_info (ebl, reg, ®locs[i],
8826 info->name, &info->bits, &info->type);
8828 qsort (regs, maxreg + 1, sizeof regs[0], &compare_registers);
8830 /* Collect the unique sets and sort them. */
8831 inline bool same_set (const struct register_info *a,
8832 const struct register_info *b)
8834 return (a < ®s[maxnreg] && a->regloc != NULL
8835 && b < ®s[maxnreg] && b->regloc != NULL
8836 && a->bits == b->bits
8837 && (a->set == b->set || !strcmp (a->set, b->set)));
8839 struct register_info *sets[maxreg + 1];
8842 for (int i = 1; i <= maxreg; ++i)
8843 if (regs[i].regloc != NULL && !same_set (®s[i], ®s[i - 1]))
8844 sets[nsets++] = ®s[i];
8845 qsort (sets, nsets, sizeof sets[0], &compare_register_sets);
8847 /* Write out all the sets. */
8848 unsigned int colno = 0;
8849 for (size_t i = 0; i < nsets; ++i)
8851 /* Find the longest name of a register in this set. */
8853 const struct register_info *end;
8854 for (end = sets[i]; same_set (sets[i], end); ++end)
8856 size_t len = strlen (end->name);
8861 for (const struct register_info *reg = sets[i];
8863 reg += reg->regloc->count ?: 1)
8864 colno = handle_core_register (ebl, core, maxname,
8865 reg->regloc, desc, colno);
8867 /* Force a line break at the end of the group. */
8868 colno = WRAP_COLUMN;
8875 handle_auxv_note (Ebl *ebl, Elf *core, GElf_Word descsz, GElf_Off desc_pos)
8877 Elf_Data *data = elf_getdata_rawchunk (core, desc_pos, descsz, ELF_T_AUXV);
8880 error (EXIT_FAILURE, 0,
8881 gettext ("cannot convert core note data: %s"), elf_errmsg (-1));
8883 const size_t nauxv = descsz / gelf_fsize (core, ELF_T_AUXV, 1, EV_CURRENT);
8884 for (size_t i = 0; i < nauxv; ++i)
8887 GElf_auxv_t *av = gelf_getauxv (data, i, &av_mem);
8893 if (ebl_auxv_info (ebl, av->a_type, &name, &fmt) == 0)
8896 if (av->a_un.a_val == 0)
8897 printf (" %" PRIu64 "\n", av->a_type);
8899 printf (" %" PRIu64 ": %#" PRIx64 "\n",
8900 av->a_type, av->a_un.a_val);
8905 case '\0': /* Normally zero. */
8906 if (av->a_un.a_val == 0)
8908 printf (" %s\n", name);
8913 case 'p': /* address */
8914 case 's': /* address of string */
8915 printf (" %s: %#" PRIx64 "\n", name, av->a_un.a_val);
8918 printf (" %s: %" PRIu64 "\n", name, av->a_un.a_val);
8921 printf (" %s: %" PRId64 "\n", name, av->a_un.a_val);
8925 printf (" %s: %#" PRIx64 " ", name, av->a_un.a_val);
8927 const char *pfx = "<";
8928 for (const char *p = fmt + 1; *p != 0; p = strchr (p, '\0') + 1)
8930 if (av->a_un.a_val & bit)
8932 printf ("%s%s", pfx, p);
8947 buf_has_data (unsigned char const *ptr, unsigned char const *end, size_t sz)
8949 return ptr < end && (size_t) (end - ptr) >= sz;
8953 buf_read_int (Elf *core, unsigned char const **ptrp, unsigned char const *end,
8956 if (! buf_has_data (*ptrp, end, 4))
8959 *ptrp = convert (core, ELF_T_WORD, 1, retp, *ptrp, 4);
8964 buf_read_ulong (Elf *core, unsigned char const **ptrp, unsigned char const *end,
8967 size_t sz = gelf_fsize (core, ELF_T_ADDR, 1, EV_CURRENT);
8968 if (! buf_has_data (*ptrp, end, sz))
8977 *ptrp = convert (core, ELF_T_ADDR, 1, &u, *ptrp, sz);
8987 handle_siginfo_note (Elf *core, GElf_Word descsz, GElf_Off desc_pos)
8989 Elf_Data *data = elf_getdata_rawchunk (core, desc_pos, descsz, ELF_T_BYTE);
8991 error (EXIT_FAILURE, 0,
8992 gettext ("cannot convert core note data: %s"), elf_errmsg (-1));
8994 unsigned char const *ptr = data->d_buf;
8995 unsigned char const *const end = data->d_buf + data->d_size;
8997 /* Siginfo head is three ints: signal number, error number, origin
8999 int si_signo, si_errno, si_code;
9000 if (! buf_read_int (core, &ptr, end, &si_signo)
9001 || ! buf_read_int (core, &ptr, end, &si_errno)
9002 || ! buf_read_int (core, &ptr, end, &si_code))
9005 printf (" Not enough data in NT_SIGINFO note.\n");
9009 /* Next is a pointer-aligned union of structures. On 64-bit
9010 machines, that implies a word of padding. */
9011 if (gelf_getclass (core) == ELFCLASS64)
9014 printf (" si_signo: %d, si_errno: %d, si_code: %d\n",
9015 si_signo, si_errno, si_code);
9026 if (! buf_read_ulong (core, &ptr, end, &addr))
9028 printf (" fault address: %#" PRIx64 "\n", addr);
9034 else if (si_code == SI_USER)
9037 if (! buf_read_int (core, &ptr, end, &pid)
9038 || ! buf_read_int (core, &ptr, end, &uid))
9040 printf (" sender PID: %d, sender UID: %d\n", pid, uid);
9045 handle_file_note (Elf *core, GElf_Word descsz, GElf_Off desc_pos)
9047 Elf_Data *data = elf_getdata_rawchunk (core, desc_pos, descsz, ELF_T_BYTE);
9049 error (EXIT_FAILURE, 0,
9050 gettext ("cannot convert core note data: %s"), elf_errmsg (-1));
9052 unsigned char const *ptr = data->d_buf;
9053 unsigned char const *const end = data->d_buf + data->d_size;
9055 uint64_t count, page_size;
9056 if (! buf_read_ulong (core, &ptr, end, &count)
9057 || ! buf_read_ulong (core, &ptr, end, &page_size))
9060 printf (" Not enough data in NT_FILE note.\n");
9064 size_t addrsize = gelf_fsize (core, ELF_T_ADDR, 1, EV_CURRENT);
9065 uint64_t maxcount = (size_t) (end - ptr) / (3 * addrsize);
9066 if (count > maxcount)
9069 /* Where file names are stored. */
9070 unsigned char const *const fstart = ptr + 3 * count * addrsize;
9071 char const *fptr = (char *) fstart;
9073 printf (" %" PRId64 " files:\n", count);
9074 for (uint64_t i = 0; i < count; ++i)
9076 uint64_t mstart, mend, moffset;
9077 if (! buf_read_ulong (core, &ptr, fstart, &mstart)
9078 || ! buf_read_ulong (core, &ptr, fstart, &mend)
9079 || ! buf_read_ulong (core, &ptr, fstart, &moffset))
9082 const char *fnext = memchr (fptr, '\0', (char *) end - fptr);
9086 int ct = printf (" %08" PRIx64 "-%08" PRIx64
9087 " %08" PRIx64 " %" PRId64,
9088 mstart, mend, moffset * page_size, mend - mstart);
9089 printf ("%*s%s\n", ct > 50 ? 3 : 53 - ct, "", fptr);
9096 handle_core_note (Ebl *ebl, const GElf_Nhdr *nhdr,
9097 const char *name, const void *desc)
9099 GElf_Word regs_offset;
9101 const Ebl_Register_Location *reglocs;
9103 const Ebl_Core_Item *items;
9105 if (! ebl_core_note (ebl, nhdr, name,
9106 ®s_offset, &nregloc, ®locs, &nitems, &items))
9109 /* Pass 0 for DESCSZ when there are registers in the note,
9110 so that the ITEMS array does not describe the whole thing.
9111 For non-register notes, the actual descsz might be a multiple
9112 of the unit size, not just exactly the unit size. */
9113 unsigned int colno = handle_core_items (ebl->elf, desc,
9114 nregloc == 0 ? nhdr->n_descsz : 0,
9117 putchar_unlocked ('\n');
9119 colno = handle_core_registers (ebl, ebl->elf, desc + regs_offset,
9122 putchar_unlocked ('\n');
9126 handle_notes_data (Ebl *ebl, const GElf_Ehdr *ehdr,
9127 GElf_Off start, Elf_Data *data)
9129 fputs_unlocked (gettext (" Owner Data size Type\n"), stdout);
9138 while (offset < data->d_size
9139 && (offset = gelf_getnote (data, offset,
9140 &nhdr, &name_offset, &desc_offset)) > 0)
9142 const char *name = data->d_buf + name_offset;
9143 const char *desc = data->d_buf + desc_offset;
9147 printf (gettext (" %-13.*s %9" PRId32 " %s\n"),
9148 (int) nhdr.n_namesz, name, nhdr.n_descsz,
9149 ehdr->e_type == ET_CORE
9150 ? ebl_core_note_type_name (ebl, nhdr.n_type,
9152 : ebl_object_note_type_name (ebl, name, nhdr.n_type,
9153 buf2, sizeof (buf2)));
9155 /* Filter out invalid entries. */
9156 if (memchr (name, '\0', nhdr.n_namesz) != NULL
9157 /* XXX For now help broken Linux kernels. */
9160 if (ehdr->e_type == ET_CORE)
9162 if (nhdr.n_type == NT_AUXV
9163 && (nhdr.n_namesz == 4 /* Broken old Linux kernels. */
9164 || (nhdr.n_namesz == 5 && name[4] == '\0'))
9165 && !memcmp (name, "CORE", 4))
9166 handle_auxv_note (ebl, ebl->elf, nhdr.n_descsz,
9167 start + desc_offset);
9168 else if (nhdr.n_namesz == 5 && strcmp (name, "CORE") == 0)
9169 switch (nhdr.n_type)
9172 handle_siginfo_note (ebl->elf, nhdr.n_descsz,
9173 start + desc_offset);
9177 handle_file_note (ebl->elf, nhdr.n_descsz,
9178 start + desc_offset);
9182 handle_core_note (ebl, &nhdr, name, desc);
9185 handle_core_note (ebl, &nhdr, name, desc);
9188 ebl_object_note (ebl, name, nhdr.n_type, nhdr.n_descsz, desc);
9192 if (offset == data->d_size)
9196 error (EXIT_FAILURE, 0,
9197 gettext ("cannot get content of note section: %s"),
9202 handle_notes (Ebl *ebl, GElf_Ehdr *ehdr)
9204 /* If we have section headers, just look for SHT_NOTE sections.
9205 In a debuginfo file, the program headers are not reliable. */
9208 /* Get the section header string table index. */
9210 if (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0)
9211 error (EXIT_FAILURE, 0,
9212 gettext ("cannot get section header string table index"));
9214 Elf_Scn *scn = NULL;
9215 while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
9218 GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
9220 if (shdr == NULL || shdr->sh_type != SHT_NOTE)
9221 /* Not what we are looking for. */
9225 \nNote section [%2zu] '%s' of %" PRIu64 " bytes at offset %#0" PRIx64 ":\n"),
9227 elf_strptr (ebl->elf, shstrndx, shdr->sh_name),
9228 shdr->sh_size, shdr->sh_offset);
9230 handle_notes_data (ebl, ehdr, shdr->sh_offset,
9231 elf_getdata (scn, NULL));
9236 /* We have to look through the program header to find the note
9237 sections. There can be more than one. */
9238 for (size_t cnt = 0; cnt < phnum; ++cnt)
9241 GElf_Phdr *phdr = gelf_getphdr (ebl->elf, cnt, &mem);
9243 if (phdr == NULL || phdr->p_type != PT_NOTE)
9244 /* Not what we are looking for. */
9248 \nNote segment of %" PRIu64 " bytes at offset %#0" PRIx64 ":\n"),
9249 phdr->p_filesz, phdr->p_offset);
9251 handle_notes_data (ebl, ehdr, phdr->p_offset,
9252 elf_getdata_rawchunk (ebl->elf,
9253 phdr->p_offset, phdr->p_filesz,
9260 hex_dump (const uint8_t *data, size_t len)
9265 printf (" 0x%08Zx ", pos);
9267 const size_t chunk = MIN (len - pos, 16);
9269 for (size_t i = 0; i < chunk; ++i)
9271 printf ("%02x ", data[pos + i]);
9273 printf ("%02x", data[pos + i]);
9276 printf ("%*s", (int) ((16 - chunk) * 2 + (16 - chunk + 3) / 4), "");
9278 for (size_t i = 0; i < chunk; ++i)
9280 unsigned char b = data[pos + i];
9281 printf ("%c", isprint (b) ? b : '.');
9290 dump_data_section (Elf_Scn *scn, const GElf_Shdr *shdr, const char *name)
9292 if (shdr->sh_size == 0 || shdr->sh_type == SHT_NOBITS)
9293 printf (gettext ("\nSection [%Zu] '%s' has no data to dump.\n"),
9294 elf_ndxscn (scn), name);
9297 Elf_Data *data = elf_rawdata (scn, NULL);
9299 error (0, 0, gettext ("cannot get data for section [%Zu] '%s': %s"),
9300 elf_ndxscn (scn), name, elf_errmsg (-1));
9303 printf (gettext ("\nHex dump of section [%Zu] '%s', %" PRIu64
9304 " bytes at offset %#0" PRIx64 ":\n"),
9305 elf_ndxscn (scn), name,
9306 shdr->sh_size, shdr->sh_offset);
9307 hex_dump (data->d_buf, data->d_size);
9313 print_string_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 strings 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 ("\nString section [%Zu] '%s' contains %" PRIu64
9327 " bytes at offset %#0" PRIx64 ":\n"),
9328 elf_ndxscn (scn), name,
9329 shdr->sh_size, shdr->sh_offset);
9331 const char *start = data->d_buf;
9332 const char *const limit = start + data->d_size;
9335 const char *end = memchr (start, '\0', limit - start);
9336 const size_t pos = start - (const char *) data->d_buf;
9337 if (unlikely (end == NULL))
9339 printf (" [%6Zx]- %.*s\n",
9340 pos, (int) (limit - start), start);
9343 printf (" [%6Zx] %s\n", pos, start);
9345 } while (start < limit);
9351 for_each_section_argument (Elf *elf, const struct section_argument *list,
9352 void (*dump) (Elf_Scn *scn, const GElf_Shdr *shdr,
9355 /* Get the section header string table index. */
9357 if (elf_getshdrstrndx (elf, &shstrndx) < 0)
9358 error (EXIT_FAILURE, 0,
9359 gettext ("cannot get section header string table index"));
9361 for (const struct section_argument *a = list; a != NULL; a = a->next)
9365 const char *name = NULL;
9368 unsigned long int shndx = strtoul (a->arg, &endp, 0);
9369 if (endp != a->arg && *endp == '\0')
9371 scn = elf_getscn (elf, shndx);
9374 error (0, 0, gettext ("\nsection [%lu] does not exist"), shndx);
9378 if (gelf_getshdr (scn, &shdr_mem) == NULL)
9379 error (EXIT_FAILURE, 0, gettext ("cannot get section header: %s"),
9381 name = elf_strptr (elf, shstrndx, shdr_mem.sh_name);
9385 /* Need to look up the section by name. */
9388 while ((scn = elf_nextscn (elf, scn)) != NULL)
9390 if (gelf_getshdr (scn, &shdr_mem) == NULL)
9392 name = elf_strptr (elf, shstrndx, shdr_mem.sh_name);
9395 if (!strcmp (name, a->arg))
9398 (*dump) (scn, &shdr_mem, name);
9402 if (unlikely (!found) && !a->implicit)
9403 error (0, 0, gettext ("\nsection '%s' does not exist"), a->arg);
9409 dump_data (Ebl *ebl)
9411 for_each_section_argument (ebl->elf, dump_data_sections, &dump_data_section);
9415 dump_strings (Ebl *ebl)
9417 for_each_section_argument (ebl->elf, string_sections, &print_string_section);
9421 print_strings (Ebl *ebl)
9423 /* Get the section header string table index. */
9425 if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0))
9426 error (EXIT_FAILURE, 0,
9427 gettext ("cannot get section header string table index"));
9433 while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
9435 if (gelf_getshdr (scn, &shdr_mem) == NULL)
9438 if (shdr_mem.sh_type != SHT_PROGBITS
9439 || !(shdr_mem.sh_flags & SHF_STRINGS))
9442 name = elf_strptr (ebl->elf, shstrndx, shdr_mem.sh_name);
9446 print_string_section (scn, &shdr_mem, name);
9451 dump_archive_index (Elf *elf, const char *fname)
9454 const Elf_Arsym *arsym = elf_getarsym (elf, &narsym);
9457 int result = elf_errno ();
9458 if (unlikely (result != ELF_E_NO_INDEX))
9459 error (EXIT_FAILURE, 0,
9460 gettext ("cannot get symbol index of archive '%s': %s"),
9461 fname, elf_errmsg (result));
9463 printf (gettext ("\nArchive '%s' has no symbol index\n"), fname);
9467 printf (gettext ("\nIndex of archive '%s' has %Zu entries:\n"),
9471 for (const Elf_Arsym *s = arsym; s < &arsym[narsym - 1]; ++s)
9473 if (s->as_off != as_off)
9478 if (unlikely (elf_rand (elf, as_off) == 0)
9479 || unlikely ((subelf = elf_begin (-1, ELF_C_READ_MMAP, elf))
9481 #if __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 7)
9484 error (EXIT_FAILURE, 0,
9485 gettext ("cannot extract member at offset %Zu in '%s': %s"),
9486 as_off, fname, elf_errmsg (-1));
9488 const Elf_Arhdr *h = elf_getarhdr (subelf);
9490 printf (gettext ("Archive member '%s' contains:\n"), h->ar_name);
9495 printf ("\t%s\n", s->as_name);
9499 #include "debugpred.h"