Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame^] | 1 | /* Print information from ELF file in human-readable form. |
| 2 | Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005 Red Hat, Inc. |
| 3 | Written by Ulrich Drepper <drepper@redhat.com>, 1999. |
| 4 | |
| 5 | This program is Open Source software; you can redistribute it and/or |
| 6 | modify it under the terms of the Open Software License version 1.0 as |
| 7 | published by the Open Source Initiative. |
| 8 | |
| 9 | You should have received a copy of the Open Software License along |
| 10 | with this program; if not, you may obtain a copy of the Open Software |
| 11 | License version 1.0 from http://www.opensource.org/licenses/osl.php or |
| 12 | by writing the Open Source Initiative c/o Lawrence Rosen, Esq., |
| 13 | 3001 King Ranch Road, Ukiah, CA 95482. */ |
| 14 | |
| 15 | #ifdef HAVE_CONFIG_H |
| 16 | # include <config.h> |
| 17 | #endif |
| 18 | |
| 19 | #include <argp.h> |
| 20 | #include <assert.h> |
| 21 | #include <dwarf.h> |
| 22 | #include <errno.h> |
| 23 | #include <error.h> |
| 24 | #include <fcntl.h> |
| 25 | #include <gelf.h> |
| 26 | #include <inttypes.h> |
| 27 | #include <langinfo.h> |
| 28 | #include <libdw.h> |
| 29 | #include <libintl.h> |
| 30 | #include <locale.h> |
| 31 | #include <stdbool.h> |
| 32 | #include <stdlib.h> |
| 33 | #include <string.h> |
| 34 | #include <time.h> |
| 35 | #include <unistd.h> |
| 36 | #include <sys/param.h> |
| 37 | |
| 38 | #include <system.h> |
| 39 | #include "../libebl/libeblP.h" |
| 40 | #include "../libdw/libdwP.h" |
| 41 | #include "../libdw/memory-access.h" |
| 42 | |
| 43 | |
| 44 | /* Name and version of program. */ |
| 45 | static void print_version (FILE *stream, struct argp_state *state); |
| 46 | void (*argp_program_version_hook) (FILE *, struct argp_state *) = print_version; |
| 47 | |
| 48 | /* Bug report address. */ |
| 49 | const char *argp_program_bug_address = PACKAGE_BUGREPORT; |
| 50 | |
| 51 | /* Definitions of arguments for argp functions. */ |
| 52 | static const struct argp_option options[] = |
| 53 | { |
| 54 | { NULL, 0, NULL, 0, N_("Output selection:"), 0 }, |
| 55 | { "all", 'a', NULL, 0, N_("Equivalent to: -h -l"), 0 }, |
| 56 | { "dynamic", 'd', NULL, 0, N_("Display the dynamic segment"), 0 }, |
| 57 | { "file-header", 'h', NULL, 0, N_("Display the ELF file header"), 0 }, |
| 58 | { "histogram", 'I', NULL, 0, |
| 59 | N_("Display histogram of bucket list lengths"), 0 }, |
| 60 | { "program-headers", 'l', NULL, 0, N_("Display the program headers"), 0 }, |
| 61 | { "relocs", 'r', NULL, 0, N_("Display relocations"), 0 }, |
| 62 | { "section-headers", 'S', NULL, 0, N_("Display the sections' header"), 0 }, |
| 63 | { "symbols", 's', NULL, 0, N_("Display the symbol table"), 0 }, |
| 64 | { "version-info", 'V', NULL, 0, N_("Display versioning information"), 0 }, |
| 65 | { "debug-dump", 'w', "SECTION", OPTION_ARG_OPTIONAL, |
| 66 | N_("Display DWARF section content. SECTION can be one of abbrev, " |
| 67 | "aranges, frame, info, loc, line, ranges, pubnames, str, or macinfo."), |
| 68 | 0 }, |
| 69 | { "notes", 'n', NULL, 0, N_("Display the core notes"), 0 }, |
| 70 | { "arch-specific", 'A', NULL, 0, |
| 71 | N_("Display architecture specific information (if any)"), 0 }, |
| 72 | |
| 73 | { NULL, 0, NULL, 0, N_("Output control:"), 0 }, |
| 74 | |
| 75 | { NULL, 0, NULL, 0, NULL, 0 } |
| 76 | }; |
| 77 | |
| 78 | /* Short description of program. */ |
| 79 | static const char doc[] = N_("\ |
| 80 | Print information from ELF file in human-readable form."); |
| 81 | |
| 82 | /* Strings for arguments in help texts. */ |
| 83 | static const char args_doc[] = N_("FILE..."); |
| 84 | |
| 85 | /* Prototype for option handler. */ |
| 86 | static error_t parse_opt (int key, char *arg, struct argp_state *state); |
| 87 | |
| 88 | /* Data structure to communicate with argp functions. */ |
| 89 | static struct argp argp = |
| 90 | { |
| 91 | options, parse_opt, args_doc, doc, NULL, NULL, NULL |
| 92 | }; |
| 93 | |
| 94 | |
| 95 | /* Flags set by the option controlling the output. */ |
| 96 | |
| 97 | /* True if dynamic segment should be printed. */ |
| 98 | static bool print_dynamic_table; |
| 99 | |
| 100 | /* True if the file header should be printed. */ |
| 101 | static bool print_file_header; |
| 102 | |
| 103 | /* True if the program headers should be printed. */ |
| 104 | static bool print_program_header; |
| 105 | |
| 106 | /* True if relocations should be printed. */ |
| 107 | static bool print_relocations; |
| 108 | |
| 109 | /* True if the section headers should be printed. */ |
| 110 | static bool print_section_header; |
| 111 | |
| 112 | /* True if the symbol table should be printed. */ |
| 113 | static bool print_symbol_table; |
| 114 | |
| 115 | /* True if the version information should be printed. */ |
| 116 | static bool print_version_info; |
| 117 | |
| 118 | /* True if section groups should be printed. */ |
| 119 | static bool print_section_groups; |
| 120 | |
| 121 | /* True if bucket list length histogram should be printed. */ |
| 122 | static bool print_histogram; |
| 123 | |
| 124 | /* True if the architecture specific data should be printed. */ |
| 125 | static bool print_arch; |
| 126 | |
| 127 | /* True if note section content should be printed. */ |
| 128 | static bool print_notes; |
| 129 | |
| 130 | /* Select printing of debugging sections. */ |
| 131 | static enum section_e |
| 132 | { |
| 133 | section_abbrev = 1, /* .debug_abbrev */ |
| 134 | section_aranges = 2, /* .debug_aranges */ |
| 135 | section_frame = 4, /* .debug_frame or .eh_frame */ |
| 136 | section_info = 8, /* .debug_info */ |
| 137 | section_line = 16, /* .debug_line */ |
| 138 | section_loc = 32, /* .debug_loc */ |
| 139 | section_pubnames = 64,/* .debug_pubnames */ |
| 140 | section_str = 128, /* .debug_str */ |
| 141 | section_macinfo = 256,/* .debug_macinfo */ |
| 142 | section_ranges = 512, /* .debug_ranges */ |
| 143 | section_all = (section_abbrev | section_aranges | section_frame |
| 144 | | section_info | section_line | section_loc |
| 145 | | section_pubnames | section_str | section_macinfo |
| 146 | | section_ranges) |
| 147 | } print_debug_sections; |
| 148 | |
| 149 | /* Number of sections in the file. */ |
| 150 | static size_t shnum; |
| 151 | |
| 152 | |
| 153 | /* Declarations of local functions. */ |
| 154 | static void process_file (int fd, Elf *elf, const char *prefix, |
| 155 | const char *fname, bool only_one); |
| 156 | static void process_elf_file (Elf *elf, const char *prefix, const char *fname, |
| 157 | bool only_one); |
| 158 | static void print_ehdr (Ebl *ebl, GElf_Ehdr *ehdr); |
| 159 | static void print_shdr (Ebl *ebl, GElf_Ehdr *ehdr); |
| 160 | static void print_phdr (Ebl *ebl, GElf_Ehdr *ehdr); |
| 161 | static void print_scngrp (Ebl *ebl); |
| 162 | static void print_dynamic (Ebl *ebl); |
| 163 | static void print_relocs (Ebl *ebl); |
| 164 | static void handle_relocs_rel (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr); |
| 165 | static void handle_relocs_rela (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr); |
| 166 | static void print_symtab (Ebl *ebl, int type); |
| 167 | static void handle_symtab (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr); |
| 168 | static void print_verinfo (Ebl *ebl); |
| 169 | static void handle_verneed (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr); |
| 170 | static void handle_verdef (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr); |
| 171 | static void handle_versym (Ebl *ebl, Elf_Scn *scn, |
| 172 | GElf_Shdr *shdr); |
| 173 | static void print_debug (Ebl *ebl, GElf_Ehdr *ehdr); |
| 174 | static void handle_hash (Ebl *ebl); |
| 175 | static void handle_notes (Ebl *ebl, GElf_Ehdr *ehdr); |
| 176 | static void print_liblist (Ebl *ebl); |
| 177 | |
| 178 | |
| 179 | int |
| 180 | main (int argc, char *argv[]) |
| 181 | { |
| 182 | /* Set locale. */ |
| 183 | setlocale (LC_ALL, ""); |
| 184 | |
| 185 | /* Initialize the message catalog. */ |
| 186 | textdomain (PACKAGE); |
| 187 | |
| 188 | /* Parse and process arguments. */ |
| 189 | int remaining; |
| 190 | argp_parse (&argp, argc, argv, 0, &remaining, NULL); |
| 191 | |
| 192 | /* Before we start tell the ELF library which version we are using. */ |
| 193 | elf_version (EV_CURRENT); |
| 194 | |
| 195 | /* Now process all the files given at the command line. */ |
| 196 | bool only_one = remaining + 1 == argc; |
| 197 | do |
| 198 | { |
| 199 | /* Open the file. */ |
| 200 | int fd = open (argv[remaining], O_RDONLY); |
| 201 | if (fd == -1) |
| 202 | { |
| 203 | error (0, errno, gettext ("cannot open input file")); |
| 204 | continue; |
| 205 | } |
| 206 | |
| 207 | /* Create an `Elf' descriptor. */ |
| 208 | Elf *elf = elf_begin (fd, ELF_C_READ_MMAP, NULL); |
| 209 | if (elf == NULL) |
| 210 | error (0, 0, gettext ("cannot generate Elf descriptor: %s\n"), |
| 211 | elf_errmsg (-1)); |
| 212 | else |
| 213 | { |
| 214 | process_file (fd, elf, NULL, argv[remaining], only_one); |
| 215 | |
| 216 | /* Now we can close the descriptor. */ |
| 217 | if (elf_end (elf) != 0) |
| 218 | error (0, 0, gettext ("error while closing Elf descriptor: %s"), |
| 219 | elf_errmsg (-1)); |
| 220 | } |
| 221 | |
| 222 | close (fd); |
| 223 | } |
| 224 | while (++remaining < argc); |
| 225 | |
| 226 | return error_message_count != 0; |
| 227 | } |
| 228 | |
| 229 | |
| 230 | /* Handle program arguments. */ |
| 231 | static error_t |
| 232 | parse_opt (int key, char *arg, |
| 233 | struct argp_state *state __attribute__ ((unused))) |
| 234 | { |
| 235 | /* True if any of the control options is set. */ |
| 236 | static bool any_control_option; |
| 237 | |
| 238 | switch (key) |
| 239 | { |
| 240 | case 'a': |
| 241 | print_file_header = true; |
| 242 | print_program_header = true; |
| 243 | print_relocations = true; |
| 244 | print_section_header = true; |
| 245 | print_symbol_table = true; |
| 246 | print_version_info = true; |
| 247 | print_dynamic_table = true; |
| 248 | print_section_groups = true; |
| 249 | print_histogram = true; |
| 250 | print_arch = true; |
| 251 | print_notes = true; |
| 252 | any_control_option = true; |
| 253 | break; |
| 254 | case 'A': |
| 255 | print_arch = true; |
| 256 | any_control_option = true; |
| 257 | break; |
| 258 | case 'd': |
| 259 | print_dynamic_table = true; |
| 260 | any_control_option = true; |
| 261 | break; |
| 262 | case 'g': |
| 263 | print_section_groups = true; |
| 264 | any_control_option = true; |
| 265 | break; |
| 266 | case 'h': |
| 267 | print_file_header = true; |
| 268 | any_control_option = true; |
| 269 | break; |
| 270 | case 'I': |
| 271 | print_histogram = true; |
| 272 | any_control_option = true; |
| 273 | break; |
| 274 | case 'l': |
| 275 | print_program_header = true; |
| 276 | any_control_option = true; |
| 277 | break; |
| 278 | case 'n': |
| 279 | print_notes = true; |
| 280 | any_control_option = true; |
| 281 | break; |
| 282 | case 'r': |
| 283 | print_relocations = true; |
| 284 | any_control_option = true; |
| 285 | break; |
| 286 | case 'S': |
| 287 | print_section_header = true; |
| 288 | any_control_option = true; |
| 289 | break; |
| 290 | case 's': |
| 291 | print_symbol_table = true; |
| 292 | any_control_option = true; |
| 293 | break; |
| 294 | case 'V': |
| 295 | print_version_info = true; |
| 296 | any_control_option = true; |
| 297 | break; |
| 298 | case 'w': |
| 299 | if (arg == NULL) |
| 300 | print_debug_sections = section_all; |
| 301 | else if (strcmp (arg, "abbrev") == 0) |
| 302 | print_debug_sections |= section_abbrev; |
| 303 | else if (strcmp (arg, "aranges") == 0) |
| 304 | print_debug_sections |= section_aranges; |
| 305 | else if (strcmp (arg, "ranges") == 0) |
| 306 | print_debug_sections |= section_ranges; |
| 307 | else if (strcmp (arg, "frame") == 0) |
| 308 | print_debug_sections |= section_frame; |
| 309 | else if (strcmp (arg, "info") == 0) |
| 310 | print_debug_sections |= section_info; |
| 311 | else if (strcmp (arg, "loc") == 0) |
| 312 | print_debug_sections |= section_loc; |
| 313 | else if (strcmp (arg, "line") == 0) |
| 314 | print_debug_sections |= section_line; |
| 315 | else if (strcmp (arg, "pubnames") == 0) |
| 316 | print_debug_sections |= section_pubnames; |
| 317 | else if (strcmp (arg, "str") == 0) |
| 318 | print_debug_sections |= section_str; |
| 319 | else if (strcmp (arg, "macinfo") == 0) |
| 320 | print_debug_sections |= section_macinfo; |
| 321 | else |
| 322 | { |
| 323 | fprintf (stderr, gettext ("Unknown DWARF debug section `%s'.\n"), |
| 324 | arg); |
| 325 | argp_help (&argp, stderr, ARGP_HELP_SEE, |
| 326 | program_invocation_short_name); |
| 327 | exit (1); |
| 328 | } |
| 329 | any_control_option = true; |
| 330 | break; |
| 331 | case ARGP_KEY_NO_ARGS: |
| 332 | fputs (gettext ("Missing file name.\n"), stderr); |
| 333 | goto do_argp_help; |
| 334 | case ARGP_KEY_FINI: |
| 335 | if (! any_control_option) |
| 336 | { |
| 337 | fputs (gettext ("No operation specified.\n"), stderr); |
| 338 | do_argp_help: |
| 339 | argp_help (&argp, stderr, ARGP_HELP_SEE | ARGP_HELP_EXIT_ERR, |
| 340 | program_invocation_short_name); |
| 341 | exit (1); |
| 342 | } |
| 343 | break; |
| 344 | default: |
| 345 | return ARGP_ERR_UNKNOWN; |
| 346 | } |
| 347 | return 0; |
| 348 | } |
| 349 | |
| 350 | |
| 351 | /* Print the version information. */ |
| 352 | static void |
| 353 | print_version (FILE *stream, struct argp_state *state __attribute__ ((unused))) |
| 354 | { |
| 355 | fprintf (stream, "readelf (%s) %s\n", PACKAGE_NAME, VERSION); |
| 356 | fprintf (stream, gettext ("\ |
| 357 | Copyright (C) %s Red Hat, Inc.\n\ |
| 358 | This is free software; see the source for copying conditions. There is NO\n\ |
| 359 | warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\ |
| 360 | "), "2005"); |
| 361 | fprintf (stream, gettext ("Written by %s.\n"), "Ulrich Drepper"); |
| 362 | } |
| 363 | |
| 364 | |
| 365 | /* Process one file. */ |
| 366 | static void |
| 367 | process_file (int fd, Elf *elf, const char *prefix, const char *fname, |
| 368 | bool only_one) |
| 369 | { |
| 370 | /* We can handle two types of files: ELF files and archives. */ |
| 371 | Elf_Kind kind = elf_kind (elf); |
| 372 | struct stat64 st; |
| 373 | |
| 374 | switch (kind) |
| 375 | { |
| 376 | case ELF_K_ELF: |
| 377 | /* Yes! It's an ELF file. */ |
| 378 | process_elf_file (elf, prefix, fname, only_one); |
| 379 | break; |
| 380 | |
| 381 | case ELF_K_AR: |
| 382 | { |
| 383 | Elf *subelf; |
| 384 | Elf_Cmd cmd = ELF_C_READ_MMAP; |
| 385 | size_t prefix_len = prefix == NULL ? 0 : strlen (prefix); |
| 386 | size_t fname_len = strlen (fname) + 1; |
| 387 | char new_prefix[prefix_len + 1 + fname_len]; |
| 388 | char *cp = new_prefix; |
| 389 | |
| 390 | /* Create the full name of the file. */ |
| 391 | if (prefix != NULL) |
| 392 | { |
| 393 | cp = mempcpy (cp, prefix, prefix_len); |
| 394 | *cp++ = ':'; |
| 395 | } |
| 396 | memcpy (cp, fname, fname_len); |
| 397 | |
| 398 | /* It's an archive. We process each file in it. */ |
| 399 | while ((subelf = elf_begin (fd, cmd, elf)) != NULL) |
| 400 | { |
| 401 | kind = elf_kind (subelf); |
| 402 | |
| 403 | /* Call this function recursively. */ |
| 404 | if (kind == ELF_K_ELF || kind == ELF_K_AR) |
| 405 | { |
| 406 | Elf_Arhdr *arhdr = elf_getarhdr (subelf); |
| 407 | assert (arhdr != NULL); |
| 408 | |
| 409 | process_file (fd, subelf, new_prefix, arhdr->ar_name, false); |
| 410 | } |
| 411 | |
| 412 | /* Get next archive element. */ |
| 413 | cmd = elf_next (subelf); |
| 414 | if (elf_end (subelf) != 0) |
| 415 | error (0, 0, |
| 416 | gettext (" error while freeing sub-ELF descriptor: %s\n"), |
| 417 | elf_errmsg (-1)); |
| 418 | } |
| 419 | } |
| 420 | break; |
| 421 | |
| 422 | default: |
| 423 | if (fstat64 (fd, &st) != 0) |
| 424 | error (0, errno, gettext ("cannot stat input file")); |
| 425 | else if (st.st_size == 0) |
| 426 | error (0, 0, gettext ("input file is empty")); |
| 427 | else |
| 428 | /* We cannot do anything. */ |
| 429 | error (0, 0, gettext ("\ |
| 430 | Not an ELF file - it has the wrong magic bytes at the start")); |
| 431 | break; |
| 432 | } |
| 433 | } |
| 434 | |
| 435 | |
| 436 | /* Process one file. */ |
| 437 | static void |
| 438 | process_elf_file (Elf *elf, const char *prefix, const char *fname, |
| 439 | bool only_one) |
| 440 | { |
| 441 | GElf_Ehdr ehdr_mem; |
| 442 | GElf_Ehdr *ehdr = gelf_getehdr (elf, &ehdr_mem); |
| 443 | Ebl *ebl; |
| 444 | |
| 445 | /* Print the file name. */ |
| 446 | if (!only_one) |
| 447 | { |
| 448 | if (prefix != NULL) |
| 449 | printf ("\n%s(%s):\n\n", prefix, fname); |
| 450 | else |
| 451 | printf ("\n%s:\n\n", fname); |
| 452 | } |
| 453 | |
| 454 | if (ehdr == NULL) |
| 455 | { |
| 456 | error (0, 0, gettext ("cannot read ELF header: %s"), elf_errmsg (-1)); |
| 457 | return; |
| 458 | } |
| 459 | |
| 460 | ebl = ebl_openbackend (elf); |
| 461 | if (ebl == NULL) |
| 462 | { |
| 463 | error (0, errno, gettext ("cannot create EBL handle")); |
| 464 | return; |
| 465 | } |
| 466 | |
| 467 | /* Determine the number of sections. */ |
| 468 | if (elf_getshnum (ebl->elf, &shnum) < 0) |
| 469 | error (EXIT_FAILURE, 0, |
| 470 | gettext ("cannot determine number of sections: %s"), |
| 471 | elf_errmsg (-1)); |
| 472 | |
| 473 | if (print_file_header) |
| 474 | print_ehdr (ebl, ehdr); |
| 475 | if (print_section_header) |
| 476 | print_shdr (ebl, ehdr); |
| 477 | if (print_program_header) |
| 478 | print_phdr (ebl, ehdr); |
| 479 | if (print_section_groups) |
| 480 | print_scngrp (ebl); |
| 481 | if (print_dynamic_table) |
| 482 | print_dynamic (ebl); |
| 483 | if (print_relocations) |
| 484 | print_relocs (ebl); |
| 485 | if (print_histogram) |
| 486 | handle_hash (ebl); |
| 487 | if (print_symbol_table) |
| 488 | print_symtab (ebl, SHT_DYNSYM); |
| 489 | if (print_version_info) |
| 490 | print_verinfo (ebl); |
| 491 | if (print_symbol_table) |
| 492 | print_symtab (ebl, SHT_SYMTAB); |
| 493 | if (print_arch) |
| 494 | print_liblist (ebl); |
| 495 | if (print_debug_sections != 0) |
| 496 | print_debug (ebl, ehdr); |
| 497 | if (print_notes) |
| 498 | handle_notes (ebl, ehdr); |
| 499 | |
| 500 | ebl_closebackend (ebl); |
| 501 | } |
| 502 | |
| 503 | |
| 504 | /* Print file type. */ |
| 505 | static void |
| 506 | print_file_type (unsigned short int e_type) |
| 507 | { |
| 508 | if (e_type <= ET_CORE) |
| 509 | { |
| 510 | static const char *knowntypes[] = |
| 511 | { |
| 512 | N_("NONE (None)"), |
| 513 | N_("REL (Relocatable file)"), |
| 514 | N_("EXEC (Executable file)"), |
| 515 | N_("DYN (Shared object file)"), |
| 516 | N_("CORE (Core file)") |
| 517 | }; |
| 518 | puts (gettext (knowntypes[e_type])); |
| 519 | } |
| 520 | else if (e_type >= ET_LOOS && e_type <= ET_HIOS) |
| 521 | printf (gettext ("OS Specific: (%x)\n"), e_type); |
| 522 | else if (e_type >= ET_LOPROC /* && e_type <= ET_HIPROC always true */) |
| 523 | printf (gettext ("Processor Specific: (%x)\n"), e_type); |
| 524 | else |
| 525 | puts ("???"); |
| 526 | } |
| 527 | |
| 528 | |
| 529 | /* Print ELF header. */ |
| 530 | static void |
| 531 | print_ehdr (Ebl *ebl, GElf_Ehdr *ehdr) |
| 532 | { |
| 533 | char buf[512]; |
| 534 | size_t cnt; |
| 535 | |
| 536 | fputs_unlocked (gettext ("ELF Header:\n Magic: "), stdout); |
| 537 | for (cnt = 0; cnt < EI_NIDENT; ++cnt) |
| 538 | printf (" %02hhx", ehdr->e_ident[cnt]); |
| 539 | |
| 540 | printf (gettext ("\n Class: %s\n"), |
| 541 | ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? "ELF32" |
| 542 | : ehdr->e_ident[EI_CLASS] == ELFCLASS64 ? "ELF64" |
| 543 | : "\?\?\?"); |
| 544 | |
| 545 | printf (gettext (" Data: %s\n"), |
| 546 | ehdr->e_ident[EI_DATA] == ELFDATA2LSB |
| 547 | ? "2's complement, little endian" |
| 548 | : ehdr->e_ident[EI_DATA] == ELFDATA2MSB |
| 549 | ? "2's complement, big endian" : "\?\?\?"); |
| 550 | |
| 551 | printf (gettext (" Version: %hhd %s\n"), |
| 552 | ehdr->e_ident[EI_VERSION], |
| 553 | ehdr->e_ident[EI_VERSION] == EV_CURRENT ? gettext ("(current)") |
| 554 | : "(\?\?\?)"); |
| 555 | |
| 556 | printf (gettext (" OS/ABI: %s\n"), |
| 557 | ebl_osabi_name (ebl, ehdr->e_ident[EI_OSABI], buf, sizeof (buf))); |
| 558 | |
| 559 | printf (gettext (" ABI Version: %hhd\n"), |
| 560 | ehdr->e_ident[EI_ABIVERSION]); |
| 561 | |
| 562 | fputs_unlocked (gettext (" Type: "), stdout); |
| 563 | print_file_type (ehdr->e_type); |
| 564 | |
| 565 | printf (gettext (" Machine: %s\n"), ebl->name); |
| 566 | |
| 567 | printf (gettext (" Version: %d %s\n"), |
| 568 | ehdr->e_version, |
| 569 | ehdr->e_version == EV_CURRENT ? gettext ("(current)") : "(\?\?\?)"); |
| 570 | |
| 571 | printf (gettext (" Entry point address: %#" PRIx64 "\n"), |
| 572 | ehdr->e_entry); |
| 573 | |
| 574 | printf (gettext (" Start of program headers: %" PRId64 " %s\n"), |
| 575 | ehdr->e_phoff, gettext ("(bytes into file)")); |
| 576 | |
| 577 | printf (gettext (" Start of section headers: %" PRId64 " %s\n"), |
| 578 | ehdr->e_shoff, gettext ("(bytes into file)")); |
| 579 | |
| 580 | printf (gettext (" Flags: %s\n"), |
| 581 | ebl_machine_flag_name (ebl, ehdr->e_flags, buf, sizeof (buf))); |
| 582 | |
| 583 | printf (gettext (" Size of this header: %" PRId16 " %s\n"), |
| 584 | ehdr->e_ehsize, gettext ("(bytes)")); |
| 585 | |
| 586 | printf (gettext (" Size of program header entries: %" PRId16 " %s\n"), |
| 587 | ehdr->e_phentsize, gettext ("(bytes)")); |
| 588 | |
| 589 | printf (gettext (" Number of program headers entries: %" PRId16 "\n"), |
| 590 | ehdr->e_phnum); |
| 591 | |
| 592 | printf (gettext (" Size of section header entries: %" PRId16 " %s\n"), |
| 593 | ehdr->e_shentsize, gettext ("(bytes)")); |
| 594 | |
| 595 | printf (gettext (" Number of section headers entries: %" PRId16), |
| 596 | ehdr->e_shnum); |
| 597 | if (ehdr->e_shnum == 0) |
| 598 | { |
| 599 | GElf_Shdr shdr_mem; |
| 600 | GElf_Shdr *shdr; |
| 601 | |
| 602 | shdr = gelf_getshdr (elf_getscn (ebl->elf, 0), &shdr_mem); |
| 603 | if (shdr != NULL) |
| 604 | printf (gettext (" (%" PRIu32 " in [0].sh_size)"), |
| 605 | (uint32_t) shdr->sh_size); |
| 606 | else |
| 607 | fputs_unlocked (gettext (" ([0] not available)"), stdout); |
| 608 | } |
| 609 | fputc_unlocked ('\n', stdout); |
| 610 | |
| 611 | if (ehdr->e_shstrndx == SHN_XINDEX) |
| 612 | { |
| 613 | GElf_Shdr shdr_mem; |
| 614 | GElf_Shdr *shdr; |
| 615 | |
| 616 | shdr = gelf_getshdr (elf_getscn (ebl->elf, 0), &shdr_mem); |
| 617 | if (shdr != NULL) |
| 618 | /* We managed to get the zeroth section. */ |
| 619 | snprintf (buf, sizeof (buf), gettext (" (%" PRIu32 " in [0].sh_link)"), |
| 620 | (uint32_t) shdr->sh_link); |
| 621 | else |
| 622 | { |
| 623 | strncpy (buf, gettext (" ([0] not available)"), sizeof (buf)); |
| 624 | buf[sizeof (buf) - 1] = '\0'; |
| 625 | } |
| 626 | |
| 627 | printf (gettext (" Section header string table index: XINDEX%s\n\n"), |
| 628 | buf); |
| 629 | } |
| 630 | else |
| 631 | printf (gettext (" Section header string table index: %" PRId16 "\n\n"), |
| 632 | ehdr->e_shstrndx); |
| 633 | } |
| 634 | |
| 635 | |
| 636 | static const char * |
| 637 | get_visibility_type (int value) |
| 638 | { |
| 639 | switch (value) |
| 640 | { |
| 641 | case STV_DEFAULT: |
| 642 | return "DEFAULT"; |
| 643 | case STV_INTERNAL: |
| 644 | return "INTERNAL"; |
| 645 | case STV_HIDDEN: |
| 646 | return "HIDDEN"; |
| 647 | case STV_PROTECTED: |
| 648 | return "PROTECTED"; |
| 649 | default: |
| 650 | return "???"; |
| 651 | } |
| 652 | } |
| 653 | |
| 654 | |
| 655 | /* Print the section headers. */ |
| 656 | static void |
| 657 | print_shdr (Ebl *ebl, GElf_Ehdr *ehdr) |
| 658 | { |
| 659 | size_t cnt; |
| 660 | size_t shstrndx; |
| 661 | |
| 662 | if (! print_file_header) |
| 663 | printf (gettext ("\ |
| 664 | There are %d section headers, starting at offset %#" PRIx64 ":\n\ |
| 665 | \n"), |
| 666 | ehdr->e_shnum, ehdr->e_shoff); |
| 667 | |
| 668 | /* Get the section header string table index. */ |
| 669 | if (elf_getshstrndx (ebl->elf, &shstrndx) < 0) |
| 670 | error (EXIT_FAILURE, 0, |
| 671 | gettext ("cannot get section header string table index")); |
| 672 | |
| 673 | puts (gettext ("Section Headers:")); |
| 674 | |
| 675 | if (ehdr->e_ident[EI_CLASS] == ELFCLASS32) |
| 676 | puts (gettext ("[Nr] Name Type Addr Off Size ES Flags Lk Inf Al")); |
| 677 | else |
| 678 | puts (gettext ("[Nr] Name Type Addr Off Size ES Flags Lk Inf Al")); |
| 679 | |
| 680 | for (cnt = 0; cnt < shnum; ++cnt) |
| 681 | { |
| 682 | char buf[128]; |
| 683 | char flagbuf[20]; |
| 684 | char *cp; |
| 685 | Elf_Scn *scn = elf_getscn (ebl->elf, cnt); |
| 686 | GElf_Shdr shdr_mem; |
| 687 | GElf_Shdr *shdr; |
| 688 | |
| 689 | if (scn == NULL) |
| 690 | error (EXIT_FAILURE, 0, gettext ("cannot get section: %s"), |
| 691 | elf_errmsg (-1)); |
| 692 | |
| 693 | /* Get the section header. */ |
| 694 | shdr = gelf_getshdr (scn, &shdr_mem); |
| 695 | if (shdr == NULL) |
| 696 | error (EXIT_FAILURE, 0, gettext ("cannot get section header: %s"), |
| 697 | elf_errmsg (-1)); |
| 698 | |
| 699 | cp = flagbuf; |
| 700 | if (shdr->sh_flags & SHF_WRITE) |
| 701 | *cp++ = 'W'; |
| 702 | if (shdr->sh_flags & SHF_ALLOC) |
| 703 | *cp++ = 'A'; |
| 704 | if (shdr->sh_flags & SHF_EXECINSTR) |
| 705 | *cp++ = 'X'; |
| 706 | if (shdr->sh_flags & SHF_MERGE) |
| 707 | *cp++ = 'M'; |
| 708 | if (shdr->sh_flags & SHF_STRINGS) |
| 709 | *cp++ = 'S'; |
| 710 | if (shdr->sh_flags & SHF_INFO_LINK) |
| 711 | *cp++ = 'I'; |
| 712 | if (shdr->sh_flags & SHF_LINK_ORDER) |
| 713 | *cp++ = 'L'; |
| 714 | if (shdr->sh_flags & SHF_OS_NONCONFORMING) |
| 715 | *cp++ = 'N'; |
| 716 | if (shdr->sh_flags & SHF_GROUP) |
| 717 | *cp++ = 'G'; |
| 718 | if (shdr->sh_flags & SHF_TLS) |
| 719 | *cp++ = 'T'; |
| 720 | if (shdr->sh_flags & SHF_ORDERED) |
| 721 | *cp++ = 'O'; |
| 722 | if (shdr->sh_flags & SHF_EXCLUDE) |
| 723 | *cp++ = 'E'; |
| 724 | *cp = '\0'; |
| 725 | |
| 726 | printf ("[%2zu] %-20s %-12s %0*" PRIx64 " %0*" PRIx64 " %0*" PRIx64 |
| 727 | " %2" PRId64 " %-5s %2" PRId32 " %3" PRId32 |
| 728 | " %2" PRId64 "\n", |
| 729 | cnt, |
| 730 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name) |
| 731 | ?: "<corrupt>", |
| 732 | ebl_section_type_name (ebl, shdr->sh_type, buf, sizeof (buf)), |
| 733 | ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 8 : 16, shdr->sh_addr, |
| 734 | ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 6 : 8, shdr->sh_offset, |
| 735 | ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 6 : 8, shdr->sh_size, |
| 736 | shdr->sh_entsize, flagbuf, shdr->sh_link, shdr->sh_info, |
| 737 | shdr->sh_addralign); |
| 738 | } |
| 739 | |
| 740 | fputc_unlocked ('\n', stdout); |
| 741 | } |
| 742 | |
| 743 | |
| 744 | /* Print the program header. */ |
| 745 | static void |
| 746 | print_phdr (Ebl *ebl, GElf_Ehdr *ehdr) |
| 747 | { |
| 748 | size_t cnt; |
| 749 | size_t shstrndx; |
| 750 | |
| 751 | if (ehdr->e_phnum == 0) |
| 752 | /* No program header, this is OK in relocatable objects. */ |
| 753 | return; |
| 754 | |
| 755 | puts (gettext ("Program Headers:")); |
| 756 | if (ehdr->e_ident[EI_CLASS] == ELFCLASS32) |
| 757 | puts (gettext ("\ |
| 758 | Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align")); |
| 759 | else |
| 760 | puts (gettext ("\ |
| 761 | Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align")); |
| 762 | |
| 763 | /* Process all program headers. */ |
| 764 | bool has_relro = false; |
| 765 | GElf_Addr relro_from = 0; |
| 766 | GElf_Addr relro_to = 0; |
| 767 | for (cnt = 0; cnt < ehdr->e_phnum; ++cnt) |
| 768 | { |
| 769 | char buf[128]; |
| 770 | GElf_Phdr mem; |
| 771 | GElf_Phdr *phdr = gelf_getphdr (ebl->elf, cnt, &mem); |
| 772 | |
| 773 | /* If for some reason the header cannot be returned show this. */ |
| 774 | if (phdr == NULL) |
| 775 | { |
| 776 | puts (" ???"); |
| 777 | continue; |
| 778 | } |
| 779 | |
| 780 | printf (" %-14s 0x%06" PRIx64 " 0x%0*" PRIx64 " 0x%0*" PRIx64 |
| 781 | " 0x%06" PRIx64 " 0x%06" PRIx64 " %c%c%c 0x%" PRIx64 "\n", |
| 782 | ebl_segment_type_name (ebl, phdr->p_type, buf, sizeof (buf)), |
| 783 | phdr->p_offset, |
| 784 | ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 8 : 16, phdr->p_vaddr, |
| 785 | ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 8 : 16, phdr->p_paddr, |
| 786 | phdr->p_filesz, |
| 787 | phdr->p_memsz, |
| 788 | phdr->p_flags & PF_R ? 'R' : ' ', |
| 789 | phdr->p_flags & PF_W ? 'W' : ' ', |
| 790 | phdr->p_flags & PF_X ? 'E' : ' ', |
| 791 | phdr->p_align); |
| 792 | |
| 793 | if (phdr->p_type == PT_INTERP) |
| 794 | { |
| 795 | /* We can show the user the name of the interpreter. */ |
| 796 | size_t maxsize; |
| 797 | char *filedata = elf_rawfile (ebl->elf, &maxsize); |
| 798 | |
| 799 | if (filedata != NULL && phdr->p_offset < maxsize) |
| 800 | printf (gettext ("\t[Requesting program interpreter: %s]\n"), |
| 801 | filedata + phdr->p_offset); |
| 802 | } |
| 803 | else if (phdr->p_type == PT_GNU_RELRO) |
| 804 | { |
| 805 | has_relro = true; |
| 806 | relro_from = phdr->p_vaddr; |
| 807 | relro_to = relro_from + phdr->p_memsz; |
| 808 | } |
| 809 | } |
| 810 | |
| 811 | /* Get the section header string table index. */ |
| 812 | if (elf_getshstrndx (ebl->elf, &shstrndx) < 0) |
| 813 | error (EXIT_FAILURE, 0, |
| 814 | gettext ("cannot get section header string table index")); |
| 815 | |
| 816 | puts (gettext ("\n Section to Segment mapping:\n Segment Sections...")); |
| 817 | |
| 818 | for (cnt = 0; cnt < ehdr->e_phnum; ++cnt) |
| 819 | { |
| 820 | GElf_Phdr phdr_mem; |
| 821 | GElf_Phdr *phdr = gelf_getphdr (ebl->elf, cnt, &phdr_mem); |
| 822 | size_t inner; |
| 823 | |
| 824 | /* Print the segment number. */ |
| 825 | printf (" %2.2zu ", cnt); |
| 826 | |
| 827 | /* This must not happen. */ |
| 828 | if (phdr == NULL) |
| 829 | error (EXIT_FAILURE, 0, gettext ("cannot get program header: %s"), |
| 830 | elf_errmsg (-1)); |
| 831 | |
| 832 | /* Iterate over the sections. */ |
| 833 | bool in_relro = false; |
| 834 | bool in_ro = false; |
| 835 | for (inner = 1; inner < shnum; ++inner) |
| 836 | { |
| 837 | Elf_Scn *scn = elf_getscn (ebl->elf, inner); |
| 838 | GElf_Shdr shdr_mem; |
| 839 | GElf_Shdr *shdr; |
| 840 | |
| 841 | /* It should not happen. */ |
| 842 | if (scn == NULL) |
| 843 | error (EXIT_FAILURE, 0, gettext ("cannot get section: %s"), |
| 844 | elf_errmsg (-1)); |
| 845 | |
| 846 | /* Get the section header. */ |
| 847 | shdr = gelf_getshdr (scn, &shdr_mem); |
| 848 | if (shdr == NULL) |
| 849 | error (EXIT_FAILURE, 0, |
| 850 | gettext ("cannot get section header: %s"), |
| 851 | elf_errmsg (-1)); |
| 852 | |
| 853 | if (shdr->sh_size > 0 |
| 854 | /* Compare allocated sections by VMA, unallocated |
| 855 | sections by file offset. */ |
| 856 | && (shdr->sh_flags & SHF_ALLOC |
| 857 | ? (shdr->sh_addr >= phdr->p_vaddr |
| 858 | && (shdr->sh_addr + shdr->sh_size |
| 859 | <= phdr->p_vaddr + phdr->p_memsz)) |
| 860 | : (shdr->sh_offset >= phdr->p_offset |
| 861 | && (shdr->sh_offset + shdr->sh_size |
| 862 | <= phdr->p_offset + phdr->p_filesz)))) |
| 863 | { |
| 864 | if (has_relro && !in_relro |
| 865 | && shdr->sh_addr >= relro_from |
| 866 | && shdr->sh_addr + shdr->sh_size <= relro_to) |
| 867 | { |
| 868 | fputs_unlocked (" [RELRO:", stdout); |
| 869 | in_relro = true; |
| 870 | } |
| 871 | else if (has_relro && in_relro && shdr->sh_addr >= relro_to) |
| 872 | { |
| 873 | fputs_unlocked ("]", stdout); |
| 874 | in_relro = false; |
| 875 | } |
| 876 | else if (has_relro && in_relro |
| 877 | && shdr->sh_addr + shdr->sh_size > relro_to) |
| 878 | fputs_unlocked ("] <RELRO:", stdout); |
| 879 | else if (phdr->p_type == PT_LOAD && (phdr->p_flags & PF_W) == 0) |
| 880 | { |
| 881 | if (!in_ro) |
| 882 | { |
| 883 | fputs_unlocked (" [RO:", stdout); |
| 884 | in_ro = true; |
| 885 | } |
| 886 | } |
| 887 | else |
| 888 | { |
| 889 | /* Determine the segment this section is part of. */ |
| 890 | size_t cnt2; |
| 891 | GElf_Phdr *phdr2 = NULL; |
| 892 | for (cnt2 = 0; cnt2 < ehdr->e_phnum; ++cnt2) |
| 893 | { |
| 894 | GElf_Phdr phdr2_mem; |
| 895 | phdr2 = gelf_getphdr (ebl->elf, cnt2, &phdr2_mem); |
| 896 | |
| 897 | if (phdr2 != NULL && phdr2->p_type == PT_LOAD |
| 898 | && shdr->sh_addr >= phdr2->p_vaddr |
| 899 | && (shdr->sh_addr + shdr->sh_size |
| 900 | <= phdr2->p_vaddr + phdr2->p_memsz)) |
| 901 | break; |
| 902 | } |
| 903 | |
| 904 | if (cnt2 < ehdr->e_phnum) |
| 905 | { |
| 906 | if ((phdr2->p_flags & PF_W) == 0 && !in_ro) |
| 907 | { |
| 908 | fputs_unlocked (" [RO:", stdout); |
| 909 | in_ro = true; |
| 910 | } |
| 911 | else if ((phdr2->p_flags & PF_W) != 0 && in_ro) |
| 912 | { |
| 913 | fputs_unlocked ("]", stdout); |
| 914 | in_ro = false; |
| 915 | } |
| 916 | } |
| 917 | } |
| 918 | |
| 919 | printf (" %s", |
| 920 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name)); |
| 921 | |
| 922 | /* Signal that this sectin is only partially covered. */ |
| 923 | if (has_relro && in_relro |
| 924 | && shdr->sh_addr + shdr->sh_size > relro_to) |
| 925 | { |
| 926 | fputs_unlocked (">", stdout); |
| 927 | in_relro = false; |
| 928 | } |
| 929 | } |
| 930 | } |
| 931 | if (in_relro || in_ro) |
| 932 | fputs_unlocked ("]", stdout); |
| 933 | |
| 934 | /* Finish the line. */ |
| 935 | fputc_unlocked ('\n', stdout); |
| 936 | } |
| 937 | } |
| 938 | |
| 939 | |
| 940 | static void |
| 941 | handle_scngrp (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr) |
| 942 | { |
| 943 | Elf_Data *data; |
| 944 | Elf32_Word *grpref; |
| 945 | Elf_Scn *symscn; |
| 946 | GElf_Shdr symshdr_mem; |
| 947 | GElf_Shdr *symshdr; |
| 948 | Elf_Data *symdata; |
| 949 | GElf_Sym sym_mem; |
| 950 | size_t cnt; |
| 951 | size_t shstrndx; |
| 952 | |
| 953 | /* Get the data of the section. */ |
| 954 | data = elf_getdata (scn, NULL); |
| 955 | |
| 956 | symscn = elf_getscn (ebl->elf, shdr->sh_link); |
| 957 | symshdr = gelf_getshdr (symscn, &symshdr_mem); |
| 958 | symdata = elf_getdata (symscn, NULL); |
| 959 | |
| 960 | if (data == NULL || data->d_size < sizeof (Elf32_Word) || symshdr == NULL |
| 961 | || symdata == NULL) |
| 962 | return; |
| 963 | |
| 964 | /* Get the section header string table index. */ |
| 965 | if (elf_getshstrndx (ebl->elf, &shstrndx) < 0) |
| 966 | error (EXIT_FAILURE, 0, |
| 967 | gettext ("cannot get section header string table index")); |
| 968 | |
| 969 | grpref = (Elf32_Word *) data->d_buf; |
| 970 | |
| 971 | printf ((grpref[0] & GRP_COMDAT) |
| 972 | ? ngettext ("\ |
| 973 | \nCOMDAT section group [%2zu] '%s' with signature '%s' contains %zu entry:\n", |
| 974 | "\ |
| 975 | \nCOMDAT section group [%2zu] '%s' with signature '%s' contains %zu entries:\n", |
| 976 | data->d_size / sizeof (Elf32_Word) - 1) |
| 977 | : ngettext ("\ |
| 978 | \nSection group [%2zu] '%s' with signature '%s' contains %zu entry:\n", "\ |
| 979 | \nSection group [%2zu] '%s' with signature '%s' contains %zu entries:\n", |
| 980 | data->d_size / sizeof (Elf32_Word) - 1), |
| 981 | elf_ndxscn (scn), |
| 982 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name), |
| 983 | elf_strptr (ebl->elf, symshdr->sh_link, |
| 984 | gelf_getsym (symdata, shdr->sh_info, &sym_mem)->st_name) |
| 985 | ?: gettext ("<INVALID SYMBOL>"), |
| 986 | data->d_size / sizeof (Elf32_Word) - 1); |
| 987 | |
| 988 | for (cnt = 1; cnt < data->d_size / sizeof (Elf32_Word); ++cnt) |
| 989 | { |
| 990 | GElf_Shdr grpshdr_mem; |
| 991 | GElf_Shdr *grpshdr; |
| 992 | |
| 993 | grpshdr = gelf_getshdr (elf_getscn (ebl->elf, grpref[cnt]), |
| 994 | &grpshdr_mem); |
| 995 | |
| 996 | if (grpshdr == NULL) |
| 997 | printf (gettext (" [%2u] <INVALID SECTION>\n"), grpref[cnt]); |
| 998 | else |
| 999 | printf (" [%2u] %s\n", |
| 1000 | grpref[cnt], |
| 1001 | elf_strptr (ebl->elf, shstrndx, grpshdr->sh_name) |
| 1002 | ?: gettext ("<INVALID SECTION>")); |
| 1003 | } |
| 1004 | } |
| 1005 | |
| 1006 | |
| 1007 | static void |
| 1008 | print_scngrp (Ebl *ebl) |
| 1009 | { |
| 1010 | /* Find all relocation sections and handle them. */ |
| 1011 | Elf_Scn *scn = NULL; |
| 1012 | |
| 1013 | while ((scn = elf_nextscn (ebl->elf, scn)) != NULL) |
| 1014 | { |
| 1015 | /* Handle the section if it is a symbol table. */ |
| 1016 | GElf_Shdr shdr_mem; |
| 1017 | GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); |
| 1018 | |
| 1019 | if (shdr != NULL && shdr->sh_type == SHT_GROUP) |
| 1020 | handle_scngrp (ebl, scn, shdr); |
| 1021 | } |
| 1022 | } |
| 1023 | |
| 1024 | |
| 1025 | static const struct flags |
| 1026 | { |
| 1027 | int mask; |
| 1028 | const char *str; |
| 1029 | } dt_flags[] = |
| 1030 | { |
| 1031 | { DF_ORIGIN, "ORIGIN" }, |
| 1032 | { DF_SYMBOLIC, "SYMBOLIC" }, |
| 1033 | { DF_TEXTREL, "TEXTREL" }, |
| 1034 | { DF_BIND_NOW, "BIND_NOW" }, |
| 1035 | { DF_STATIC_TLS, "STATIC_TLS" } |
| 1036 | }; |
| 1037 | static const int ndt_flags = sizeof (dt_flags) / sizeof (dt_flags[0]); |
| 1038 | |
| 1039 | static const struct flags dt_flags_1[] = |
| 1040 | { |
| 1041 | { DF_1_NOW, "NOW" }, |
| 1042 | { DF_1_GLOBAL, "GLOBAL" }, |
| 1043 | { DF_1_GROUP, "GROUP" }, |
| 1044 | { DF_1_NODELETE, "NODELETE" }, |
| 1045 | { DF_1_LOADFLTR, "LOADFLTR" }, |
| 1046 | { DF_1_INITFIRST, "INITFIRST" }, |
| 1047 | { DF_1_NOOPEN, "NOOPEN" }, |
| 1048 | { DF_1_ORIGIN, "ORIGIN" }, |
| 1049 | { DF_1_DIRECT, "DIRECT" }, |
| 1050 | { DF_1_TRANS, "TRANS" }, |
| 1051 | { DF_1_INTERPOSE, "INTERPOSE" }, |
| 1052 | { DF_1_NODEFLIB, "NODEFLIB" }, |
| 1053 | { DF_1_NODUMP, "NODUMP" }, |
| 1054 | { DF_1_CONFALT, "CONFALT" }, |
| 1055 | { DF_1_ENDFILTEE, "ENDFILTEE" }, |
| 1056 | { DF_1_DISPRELDNE, "DISPRELDNE" }, |
| 1057 | { DF_1_DISPRELPND, "DISPRELPND" }, |
| 1058 | }; |
| 1059 | static const int ndt_flags_1 = sizeof (dt_flags_1) / sizeof (dt_flags_1[0]); |
| 1060 | |
| 1061 | static const struct flags dt_feature_1[] = |
| 1062 | { |
| 1063 | { DTF_1_PARINIT, "PARINIT" }, |
| 1064 | { DTF_1_CONFEXP, "CONFEXP" } |
| 1065 | }; |
| 1066 | static const int ndt_feature_1 = (sizeof (dt_feature_1) |
| 1067 | / sizeof (dt_feature_1[0])); |
| 1068 | |
| 1069 | static const struct flags dt_posflag_1[] = |
| 1070 | { |
| 1071 | { DF_P1_LAZYLOAD, "LAZYLOAD" }, |
| 1072 | { DF_P1_GROUPPERM, "GROUPPERM" } |
| 1073 | }; |
| 1074 | static const int ndt_posflag_1 = (sizeof (dt_posflag_1) |
| 1075 | / sizeof (dt_posflag_1[0])); |
| 1076 | |
| 1077 | |
| 1078 | static void |
| 1079 | print_flags (int class, GElf_Xword d_val, const struct flags *flags, |
| 1080 | int nflags) |
| 1081 | { |
| 1082 | bool first = true; |
| 1083 | int cnt; |
| 1084 | |
| 1085 | for (cnt = 0; cnt < nflags; ++cnt) |
| 1086 | if (d_val & flags[cnt].mask) |
| 1087 | { |
| 1088 | if (!first) |
| 1089 | putchar_unlocked (' '); |
| 1090 | fputs_unlocked (flags[cnt].str, stdout); |
| 1091 | d_val &= ~flags[cnt].mask; |
| 1092 | first = false; |
| 1093 | } |
| 1094 | |
| 1095 | if (d_val != 0) |
| 1096 | { |
| 1097 | if (!first) |
| 1098 | putchar_unlocked (' '); |
| 1099 | printf ("%#0*" PRIx64, class == ELFCLASS32 ? 10 : 18, d_val); |
| 1100 | } |
| 1101 | |
| 1102 | putchar_unlocked ('\n'); |
| 1103 | } |
| 1104 | |
| 1105 | |
| 1106 | static void |
| 1107 | print_dt_flags (int class, GElf_Xword d_val) |
| 1108 | { |
| 1109 | print_flags (class, d_val, dt_flags, ndt_flags); |
| 1110 | } |
| 1111 | |
| 1112 | |
| 1113 | static void |
| 1114 | print_dt_flags_1 (int class, GElf_Xword d_val) |
| 1115 | { |
| 1116 | print_flags (class, d_val, dt_flags_1, ndt_flags_1); |
| 1117 | } |
| 1118 | |
| 1119 | |
| 1120 | static void |
| 1121 | print_dt_feature_1 (int class, GElf_Xword d_val) |
| 1122 | { |
| 1123 | print_flags (class, d_val, dt_feature_1, ndt_feature_1); |
| 1124 | } |
| 1125 | |
| 1126 | |
| 1127 | static void |
| 1128 | print_dt_posflag_1 (int class, GElf_Xword d_val) |
| 1129 | { |
| 1130 | print_flags (class, d_val, dt_posflag_1, ndt_posflag_1); |
| 1131 | } |
| 1132 | |
| 1133 | |
| 1134 | static void |
| 1135 | handle_dynamic (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr) |
| 1136 | { |
| 1137 | int class = gelf_getclass (ebl->elf); |
| 1138 | GElf_Shdr glink; |
| 1139 | Elf_Data *data; |
| 1140 | size_t cnt; |
| 1141 | size_t shstrndx; |
| 1142 | |
| 1143 | /* Get the data of the section. */ |
| 1144 | data = elf_getdata (scn, NULL); |
| 1145 | if (data == NULL) |
| 1146 | return; |
| 1147 | |
| 1148 | /* Get the section header string table index. */ |
| 1149 | if (elf_getshstrndx (ebl->elf, &shstrndx) < 0) |
| 1150 | error (EXIT_FAILURE, 0, |
| 1151 | gettext ("cannot get section header string table index")); |
| 1152 | |
| 1153 | printf (ngettext ("\ |
| 1154 | \nDynamic segment contains %lu entry:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'\n", |
| 1155 | "\ |
| 1156 | \nDynamic segment contains %lu entries:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'\n", |
| 1157 | shdr->sh_size / shdr->sh_entsize), |
| 1158 | (unsigned long int) (shdr->sh_size / shdr->sh_entsize), |
| 1159 | class == ELFCLASS32 ? 10 : 18, shdr->sh_addr, |
| 1160 | shdr->sh_offset, |
| 1161 | (int) shdr->sh_link, |
| 1162 | elf_strptr (ebl->elf, shstrndx, |
| 1163 | gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link), |
| 1164 | &glink)->sh_name)); |
| 1165 | fputs_unlocked (gettext (" Type Value\n"), stdout); |
| 1166 | |
| 1167 | for (cnt = 0; cnt < shdr->sh_size / shdr->sh_entsize; ++cnt) |
| 1168 | { |
| 1169 | char buf[64]; |
| 1170 | GElf_Dyn dynmem; |
| 1171 | GElf_Dyn *dyn; |
| 1172 | |
| 1173 | dyn = gelf_getdyn (data, cnt, &dynmem); |
| 1174 | if (dyn == NULL) |
| 1175 | break; |
| 1176 | |
| 1177 | printf (" %-17s ", |
| 1178 | ebl_dynamic_tag_name (ebl, dyn->d_tag, buf, sizeof (buf))); |
| 1179 | |
| 1180 | switch (dyn->d_tag) |
| 1181 | { |
| 1182 | case DT_NULL: |
| 1183 | case DT_DEBUG: |
| 1184 | case DT_BIND_NOW: |
| 1185 | case DT_TEXTREL: |
| 1186 | /* No further output. */ |
| 1187 | fputc ('\n', stdout); |
| 1188 | break; |
| 1189 | |
| 1190 | case DT_NEEDED: |
| 1191 | printf (gettext ("Shared library: [%s]\n"), |
| 1192 | elf_strptr (ebl->elf, shdr->sh_link, dyn->d_un.d_val)); |
| 1193 | break; |
| 1194 | |
| 1195 | case DT_SONAME: |
| 1196 | printf (gettext ("Library soname: [%s]\n"), |
| 1197 | elf_strptr (ebl->elf, shdr->sh_link, dyn->d_un.d_val)); |
| 1198 | break; |
| 1199 | |
| 1200 | case DT_RPATH: |
| 1201 | printf (gettext ("Library rpath: [%s]\n"), |
| 1202 | elf_strptr (ebl->elf, shdr->sh_link, dyn->d_un.d_val)); |
| 1203 | break; |
| 1204 | |
| 1205 | case DT_RUNPATH: |
| 1206 | printf (gettext ("Library runpath: [%s]\n"), |
| 1207 | elf_strptr (ebl->elf, shdr->sh_link, dyn->d_un.d_val)); |
| 1208 | break; |
| 1209 | |
| 1210 | case DT_PLTRELSZ: |
| 1211 | case DT_RELASZ: |
| 1212 | case DT_STRSZ: |
| 1213 | case DT_RELSZ: |
| 1214 | case DT_RELAENT: |
| 1215 | case DT_SYMENT: |
| 1216 | case DT_RELENT: |
| 1217 | case DT_PLTPADSZ: |
| 1218 | case DT_MOVEENT: |
| 1219 | case DT_MOVESZ: |
| 1220 | case DT_INIT_ARRAYSZ: |
| 1221 | case DT_FINI_ARRAYSZ: |
| 1222 | case DT_SYMINSZ: |
| 1223 | case DT_SYMINENT: |
| 1224 | case DT_GNU_CONFLICTSZ: |
| 1225 | case DT_GNU_LIBLISTSZ: |
| 1226 | printf (gettext ("%" PRId64 " (bytes)\n"), dyn->d_un.d_val); |
| 1227 | break; |
| 1228 | |
| 1229 | case DT_VERDEFNUM: |
| 1230 | case DT_VERNEEDNUM: |
| 1231 | case DT_RELACOUNT: |
| 1232 | case DT_RELCOUNT: |
| 1233 | printf ("%" PRId64 "\n", dyn->d_un.d_val); |
| 1234 | break; |
| 1235 | |
| 1236 | case DT_PLTREL: |
| 1237 | puts (ebl_dynamic_tag_name (ebl, dyn->d_un.d_val, NULL, 0)); |
| 1238 | break; |
| 1239 | |
| 1240 | case DT_FLAGS: |
| 1241 | print_dt_flags (class, dyn->d_un.d_val); |
| 1242 | break; |
| 1243 | |
| 1244 | case DT_FLAGS_1: |
| 1245 | print_dt_flags_1 (class, dyn->d_un.d_val); |
| 1246 | break; |
| 1247 | |
| 1248 | case DT_FEATURE_1: |
| 1249 | print_dt_feature_1 (class, dyn->d_un.d_val); |
| 1250 | break; |
| 1251 | |
| 1252 | case DT_POSFLAG_1: |
| 1253 | print_dt_posflag_1 (class, dyn->d_un.d_val); |
| 1254 | break; |
| 1255 | |
| 1256 | default: |
| 1257 | printf ("%#0*" PRIx64 "\n", |
| 1258 | class == ELFCLASS32 ? 10 : 18, dyn->d_un.d_val); |
| 1259 | break; |
| 1260 | } |
| 1261 | } |
| 1262 | } |
| 1263 | |
| 1264 | |
| 1265 | /* Print the dynamic segment. */ |
| 1266 | static void |
| 1267 | print_dynamic (Ebl *ebl) |
| 1268 | { |
| 1269 | /* Find all relocation sections and handle them. */ |
| 1270 | Elf_Scn *scn = NULL; |
| 1271 | |
| 1272 | while ((scn = elf_nextscn (ebl->elf, scn)) != NULL) |
| 1273 | { |
| 1274 | /* Handle the section if it is a symbol table. */ |
| 1275 | GElf_Shdr shdr_mem; |
| 1276 | GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); |
| 1277 | |
| 1278 | if (shdr != NULL && shdr->sh_type == SHT_DYNAMIC) |
| 1279 | { |
| 1280 | handle_dynamic (ebl, scn, shdr); |
| 1281 | break; |
| 1282 | } |
| 1283 | } |
| 1284 | } |
| 1285 | |
| 1286 | |
| 1287 | /* Print relocations. */ |
| 1288 | static void |
| 1289 | print_relocs (Ebl *ebl) |
| 1290 | { |
| 1291 | /* Find all relocation sections and handle them. */ |
| 1292 | Elf_Scn *scn = NULL; |
| 1293 | |
| 1294 | while ((scn = elf_nextscn (ebl->elf, scn)) != NULL) |
| 1295 | { |
| 1296 | /* Handle the section if it is a symbol table. */ |
| 1297 | GElf_Shdr shdr_mem; |
| 1298 | GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); |
| 1299 | |
| 1300 | if (shdr != NULL) |
| 1301 | { |
| 1302 | if (shdr->sh_type == SHT_REL) |
| 1303 | handle_relocs_rel (ebl, scn, shdr); |
| 1304 | else if (shdr->sh_type == SHT_RELA) |
| 1305 | handle_relocs_rela (ebl, scn, shdr); |
| 1306 | } |
| 1307 | } |
| 1308 | } |
| 1309 | |
| 1310 | |
| 1311 | /* Handle a relocation section. */ |
| 1312 | static void |
| 1313 | handle_relocs_rel (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr) |
| 1314 | { |
| 1315 | int class = gelf_getclass (ebl->elf); |
| 1316 | int nentries = shdr->sh_size / shdr->sh_entsize; |
| 1317 | int cnt; |
| 1318 | Elf_Data *data; |
| 1319 | Elf_Scn *symscn; |
| 1320 | GElf_Shdr symshdr_mem; |
| 1321 | GElf_Shdr *symshdr; |
| 1322 | Elf_Data *symdata; |
| 1323 | GElf_Shdr destshdr_mem; |
| 1324 | GElf_Shdr *destshdr; |
| 1325 | Elf_Scn *xndxscn; |
| 1326 | Elf_Data *xndxdata = NULL; |
| 1327 | size_t shstrndx; |
| 1328 | |
| 1329 | /* Get the data of the section. */ |
| 1330 | data = elf_getdata (scn, NULL); |
| 1331 | if (data == NULL) |
| 1332 | return; |
| 1333 | |
| 1334 | /* Get the symbol table information. */ |
| 1335 | symscn = elf_getscn (ebl->elf, shdr->sh_link); |
| 1336 | symshdr = gelf_getshdr (symscn, &symshdr_mem); |
| 1337 | symdata = elf_getdata (symscn, NULL); |
| 1338 | |
| 1339 | /* Get the section header of the section the relocations are for. */ |
| 1340 | destshdr = gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_info), |
| 1341 | &destshdr_mem); |
| 1342 | |
| 1343 | if (symshdr == NULL || symdata == NULL || destshdr == NULL) |
| 1344 | { |
| 1345 | printf (gettext ("\nInvalid symbol table at offset %#0" PRIx64 "\n"), |
| 1346 | shdr->sh_offset); |
| 1347 | return; |
| 1348 | } |
| 1349 | |
| 1350 | /* Search for the optional extended section index table. */ |
| 1351 | xndxscn = NULL; |
| 1352 | while ((xndxscn = elf_nextscn (ebl->elf, xndxscn)) != NULL) |
| 1353 | { |
| 1354 | GElf_Shdr xndxshdr_mem; |
| 1355 | GElf_Shdr *xndxshdr; |
| 1356 | |
| 1357 | xndxshdr = gelf_getshdr (xndxscn, &xndxshdr_mem); |
| 1358 | if (xndxshdr != NULL && xndxshdr->sh_type == SHT_SYMTAB_SHNDX |
| 1359 | && xndxshdr->sh_link == elf_ndxscn (symscn)) |
| 1360 | { |
| 1361 | /* Found it. */ |
| 1362 | xndxdata = elf_getdata (xndxscn, NULL); |
| 1363 | break; |
| 1364 | } |
| 1365 | } |
| 1366 | |
| 1367 | /* Get the section header string table index. */ |
| 1368 | if (elf_getshstrndx (ebl->elf, &shstrndx) < 0) |
| 1369 | error (EXIT_FAILURE, 0, |
| 1370 | gettext ("cannot get section header string table index")); |
| 1371 | |
| 1372 | if (shdr->sh_info != 0) |
| 1373 | printf (ngettext ("\ |
| 1374 | \nRelocation section [%2u] '%s' for section [%2u] '%s' at offset %#0" PRIx64 " contains %d entry:\n", |
| 1375 | "\ |
| 1376 | \nRelocation section [%2u] '%s' for section [%2u] '%s' at offset %#0" PRIx64 " contains %d entries:\n", |
| 1377 | nentries), |
| 1378 | (unsigned int) elf_ndxscn (scn), |
| 1379 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name), |
| 1380 | (unsigned int) shdr->sh_info, |
| 1381 | elf_strptr (ebl->elf, shstrndx, destshdr->sh_name), |
| 1382 | shdr->sh_offset, |
| 1383 | nentries); |
| 1384 | else |
| 1385 | /* The .rel.dyn section does not refer to a specific section but |
| 1386 | instead of section index zero. Do not try to print a section |
| 1387 | name. */ |
| 1388 | printf (ngettext ("\ |
| 1389 | \nRelocation section [%2u] '%s' at offset %#0" PRIx64 " contains %d entry:\n", |
| 1390 | "\ |
| 1391 | \nRelocation section [%2u] '%s' at offset %#0" PRIx64 " contains %d entries:\n", |
| 1392 | nentries), |
| 1393 | (unsigned int) elf_ndxscn (scn), |
| 1394 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name), |
| 1395 | shdr->sh_offset, |
| 1396 | nentries); |
| 1397 | fputs_unlocked (class == ELFCLASS32 |
| 1398 | ? gettext ("\ |
| 1399 | Offset Type Value Name\n") |
| 1400 | : gettext ("\ |
| 1401 | Offset Type Value Name\n"), |
| 1402 | stdout); |
| 1403 | |
| 1404 | for (cnt = 0; cnt < nentries; ++cnt) |
| 1405 | { |
| 1406 | GElf_Rel relmem; |
| 1407 | GElf_Rel *rel; |
| 1408 | |
| 1409 | rel = gelf_getrel (data, cnt, &relmem); |
| 1410 | if (rel != NULL) |
| 1411 | { |
| 1412 | char buf[128]; |
| 1413 | GElf_Sym symmem; |
| 1414 | GElf_Sym *sym; |
| 1415 | Elf32_Word xndx; |
| 1416 | |
| 1417 | sym = gelf_getsymshndx (symdata, xndxdata, GELF_R_SYM (rel->r_info), |
| 1418 | &symmem, &xndx); |
| 1419 | if (sym == NULL) |
| 1420 | printf (" %#0*" PRIx64 " %-20s <%s %ld>\n", |
| 1421 | class == ELFCLASS32 ? 10 : 18, rel->r_offset, |
| 1422 | ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info)) |
| 1423 | /* Avoid the leading R_ which isn't carrying any |
| 1424 | information. */ |
| 1425 | ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info), |
| 1426 | buf, sizeof (buf)) + 2 |
| 1427 | : gettext ("<INVALID RELOC>"), |
| 1428 | gettext ("INVALID SYMBOL"), |
| 1429 | (long int) GELF_R_SYM (rel->r_info)); |
| 1430 | else if (GELF_ST_TYPE (sym->st_info) != STT_SECTION) |
| 1431 | printf (" %#0*" PRIx64 " %-20s %#0*" PRIx64 " %s\n", |
| 1432 | class == ELFCLASS32 ? 10 : 18, rel->r_offset, |
| 1433 | ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info)) |
| 1434 | /* Avoid the leading R_ which isn't carrying any |
| 1435 | information. */ |
| 1436 | ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info), |
| 1437 | buf, sizeof (buf)) + 2 |
| 1438 | : gettext ("<INVALID RELOC>"), |
| 1439 | class == ELFCLASS32 ? 10 : 18, sym->st_value, |
| 1440 | elf_strptr (ebl->elf, symshdr->sh_link, sym->st_name)); |
| 1441 | else |
| 1442 | { |
| 1443 | destshdr = gelf_getshdr (elf_getscn (ebl->elf, |
| 1444 | sym->st_shndx == SHN_XINDEX |
| 1445 | ? xndx : sym->st_shndx), |
| 1446 | &destshdr_mem); |
| 1447 | |
| 1448 | if (shdr == NULL) |
| 1449 | printf (" %#0*" PRIx64 " %-20s <%s %ld>\n", |
| 1450 | class == ELFCLASS32 ? 10 : 18, rel->r_offset, |
| 1451 | ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info)) |
| 1452 | /* Avoid the leading R_ which isn't carrying any |
| 1453 | information. */ |
| 1454 | ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info), |
| 1455 | buf, sizeof (buf)) + 2 |
| 1456 | : gettext ("<INVALID RELOC>"), |
| 1457 | gettext ("INVALID SECTION"), |
| 1458 | (long int) (sym->st_shndx == SHN_XINDEX |
| 1459 | ? xndx : sym->st_shndx)); |
| 1460 | else |
| 1461 | printf (" %#0*" PRIx64 " %-20s %#0*" PRIx64 " %s\n", |
| 1462 | class == ELFCLASS32 ? 10 : 18, rel->r_offset, |
| 1463 | ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info)) |
| 1464 | /* Avoid the leading R_ which isn't carrying any |
| 1465 | information. */ |
| 1466 | ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info), |
| 1467 | buf, sizeof (buf)) + 2 |
| 1468 | : gettext ("<INVALID RELOC>"), |
| 1469 | class == ELFCLASS32 ? 10 : 18, sym->st_value, |
| 1470 | elf_strptr (ebl->elf, shstrndx, destshdr->sh_name)); |
| 1471 | } |
| 1472 | } |
| 1473 | } |
| 1474 | } |
| 1475 | |
| 1476 | |
| 1477 | /* Handle a relocation section. */ |
| 1478 | static void |
| 1479 | handle_relocs_rela (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr) |
| 1480 | { |
| 1481 | int class = gelf_getclass (ebl->elf); |
| 1482 | int nentries = shdr->sh_size / shdr->sh_entsize; |
| 1483 | |
| 1484 | /* Get the data of the section. */ |
| 1485 | Elf_Data *data = elf_getdata (scn, NULL); |
| 1486 | if (data == NULL) |
| 1487 | return; |
| 1488 | |
| 1489 | /* Get the symbol table information. */ |
| 1490 | Elf_Scn *symscn = elf_getscn (ebl->elf, shdr->sh_link); |
| 1491 | GElf_Shdr symshdr_mem; |
| 1492 | GElf_Shdr *symshdr = gelf_getshdr (symscn, &symshdr_mem); |
| 1493 | Elf_Data *symdata = elf_getdata (symscn, NULL); |
| 1494 | |
| 1495 | /* Get the section header of the section the relocations are for. */ |
| 1496 | GElf_Shdr destshdr_mem; |
| 1497 | GElf_Shdr *destshdr = gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_info), |
| 1498 | &destshdr_mem); |
| 1499 | |
| 1500 | if (symshdr == NULL || symdata == NULL || destshdr == NULL) |
| 1501 | { |
| 1502 | printf (gettext ("\nInvalid symbol table at offset %#0" PRIx64 "\n"), |
| 1503 | shdr->sh_offset); |
| 1504 | return; |
| 1505 | } |
| 1506 | |
| 1507 | /* Search for the optional extended section index table. */ |
| 1508 | Elf_Data *xndxdata = NULL; |
| 1509 | Elf_Scn *xndxscn = NULL; |
| 1510 | while ((xndxscn = elf_nextscn (ebl->elf, xndxscn)) != NULL) |
| 1511 | { |
| 1512 | GElf_Shdr xndxshdr_mem; |
| 1513 | GElf_Shdr *xndxshdr; |
| 1514 | |
| 1515 | xndxshdr = gelf_getshdr (xndxscn, &xndxshdr_mem); |
| 1516 | if (xndxshdr != NULL && xndxshdr->sh_type == SHT_SYMTAB_SHNDX |
| 1517 | && xndxshdr->sh_link == elf_ndxscn (symscn)) |
| 1518 | { |
| 1519 | /* Found it. */ |
| 1520 | xndxdata = elf_getdata (xndxscn, NULL); |
| 1521 | break; |
| 1522 | } |
| 1523 | } |
| 1524 | |
| 1525 | /* Get the section header string table index. */ |
| 1526 | size_t shstrndx; |
| 1527 | if (elf_getshstrndx (ebl->elf, &shstrndx) < 0) |
| 1528 | error (EXIT_FAILURE, 0, |
| 1529 | gettext ("cannot get section header string table index")); |
| 1530 | |
| 1531 | printf (ngettext ("\ |
| 1532 | \nRelocation section [%2zu] '%s' for section [%2u] '%s' at offset %#0" PRIx64 " contains %d entry:\n", |
| 1533 | "\ |
| 1534 | \nRelocation section [%2zu] '%s' for section [%2u] '%s' at offset %#0" PRIx64 " contains %d entries:\n", |
| 1535 | nentries), |
| 1536 | elf_ndxscn (scn), |
| 1537 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name), |
| 1538 | (unsigned int) shdr->sh_info, |
| 1539 | elf_strptr (ebl->elf, shstrndx, destshdr->sh_name), |
| 1540 | shdr->sh_offset, |
| 1541 | nentries); |
| 1542 | fputs_unlocked (class == ELFCLASS32 |
| 1543 | ? gettext ("\ |
| 1544 | Offset Type Value Addend Name\n") |
| 1545 | : gettext ("\ |
| 1546 | Offset Type Value Addend Name\n"), |
| 1547 | stdout); |
| 1548 | |
| 1549 | for (int cnt = 0; cnt < nentries; ++cnt) |
| 1550 | { |
| 1551 | GElf_Rela relmem; |
| 1552 | GElf_Rela *rel = gelf_getrela (data, cnt, &relmem); |
| 1553 | if (rel != NULL) |
| 1554 | { |
| 1555 | char buf[64]; |
| 1556 | GElf_Sym symmem; |
| 1557 | GElf_Sym *sym; |
| 1558 | Elf32_Word xndx; |
| 1559 | |
| 1560 | sym = gelf_getsymshndx (symdata, xndxdata, GELF_R_SYM (rel->r_info), |
| 1561 | &symmem, &xndx); |
| 1562 | |
| 1563 | if (sym == NULL) |
| 1564 | printf (" %#0*" PRIx64 " %-15s <%s %ld>\n", |
| 1565 | class == ELFCLASS32 ? 10 : 18, rel->r_offset, |
| 1566 | ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info)) |
| 1567 | /* Avoid the leading R_ which isn't carrying any |
| 1568 | information. */ |
| 1569 | ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info), |
| 1570 | buf, sizeof (buf)) + 2 |
| 1571 | : gettext ("<INVALID RELOC>"), |
| 1572 | gettext ("INVALID SYMBOL"), |
| 1573 | (long int) GELF_R_SYM (rel->r_info)); |
| 1574 | else if (GELF_ST_TYPE (sym->st_info) != STT_SECTION) |
| 1575 | printf ("\ |
| 1576 | %#0*" PRIx64 " %-15s %#0*" PRIx64 " +%5" PRId64 " %s\n", |
| 1577 | class == ELFCLASS32 ? 10 : 18, rel->r_offset, |
| 1578 | ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info)) |
| 1579 | /* Avoid the leading R_ which isn't carrying any |
| 1580 | information. */ |
| 1581 | ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info), |
| 1582 | buf, sizeof (buf)) + 2 |
| 1583 | : gettext ("<INVALID RELOC>"), |
| 1584 | class == ELFCLASS32 ? 10 : 18, sym->st_value, |
| 1585 | rel->r_addend, |
| 1586 | elf_strptr (ebl->elf, symshdr->sh_link, sym->st_name)); |
| 1587 | else |
| 1588 | { |
| 1589 | destshdr = gelf_getshdr (elf_getscn (ebl->elf, |
| 1590 | sym->st_shndx == SHN_XINDEX |
| 1591 | ? xndx : sym->st_shndx), |
| 1592 | &destshdr_mem); |
| 1593 | |
| 1594 | if (shdr == NULL) |
| 1595 | printf (" %#0*" PRIx64 " %-15s <%s %ld>\n", |
| 1596 | class == ELFCLASS32 ? 10 : 18, rel->r_offset, |
| 1597 | ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info)) |
| 1598 | /* Avoid the leading R_ which isn't carrying any |
| 1599 | information. */ |
| 1600 | ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info), |
| 1601 | buf, sizeof (buf)) + 2 |
| 1602 | : gettext ("<INVALID RELOC>"), |
| 1603 | gettext ("INVALID SECTION"), |
| 1604 | (long int) (sym->st_shndx == SHN_XINDEX |
| 1605 | ? xndx : sym->st_shndx)); |
| 1606 | else |
| 1607 | printf ("\ |
| 1608 | %#0*" PRIx64 " %-15s %#0*" PRIx64 " +%5" PRId64 " %s\n", |
| 1609 | class == ELFCLASS32 ? 10 : 18, rel->r_offset, |
| 1610 | ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info)) |
| 1611 | /* Avoid the leading R_ which isn't carrying any |
| 1612 | information. */ |
| 1613 | ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info), |
| 1614 | buf, sizeof (buf)) + 2 |
| 1615 | : gettext ("<INVALID RELOC>"), |
| 1616 | class == ELFCLASS32 ? 10 : 18, sym->st_value, |
| 1617 | rel->r_addend, |
| 1618 | elf_strptr (ebl->elf, shstrndx, destshdr->sh_name)); |
| 1619 | } |
| 1620 | } |
| 1621 | } |
| 1622 | } |
| 1623 | |
| 1624 | |
| 1625 | /* Print the program header. */ |
| 1626 | static void |
| 1627 | print_symtab (Ebl *ebl, int type) |
| 1628 | { |
| 1629 | /* Find the symbol table(s). For this we have to search through the |
| 1630 | section table. */ |
| 1631 | Elf_Scn *scn = NULL; |
| 1632 | |
| 1633 | while ((scn = elf_nextscn (ebl->elf, scn)) != NULL) |
| 1634 | { |
| 1635 | /* Handle the section if it is a symbol table. */ |
| 1636 | GElf_Shdr shdr_mem; |
| 1637 | GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); |
| 1638 | |
| 1639 | if (shdr != NULL && shdr->sh_type == (GElf_Word) type) |
| 1640 | handle_symtab (ebl, scn, shdr); |
| 1641 | } |
| 1642 | } |
| 1643 | |
| 1644 | |
| 1645 | static void |
| 1646 | handle_symtab (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr) |
| 1647 | { |
| 1648 | Elf_Data *versym_data = NULL; |
| 1649 | Elf_Data *verneed_data = NULL; |
| 1650 | Elf_Data *verdef_data = NULL; |
| 1651 | Elf_Data *xndx_data = NULL; |
| 1652 | Elf_Scn *runscn; |
| 1653 | Elf_Data *data; |
| 1654 | int class = gelf_getclass (ebl->elf); |
| 1655 | unsigned int nsyms; |
| 1656 | unsigned int cnt; |
| 1657 | Elf32_Word verneed_stridx = 0; |
| 1658 | Elf32_Word verdef_stridx = 0; |
| 1659 | GElf_Shdr glink; |
| 1660 | size_t shstrndx; |
| 1661 | |
| 1662 | /* Get the data of the section. */ |
| 1663 | data = elf_getdata (scn, NULL); |
| 1664 | if (data == NULL) |
| 1665 | return; |
| 1666 | |
| 1667 | /* Find out whether we have other sections we might need. */ |
| 1668 | runscn = NULL; |
| 1669 | while ((runscn = elf_nextscn (ebl->elf, runscn)) != NULL) |
| 1670 | { |
| 1671 | GElf_Shdr runshdr_mem; |
| 1672 | GElf_Shdr *runshdr = gelf_getshdr (runscn, &runshdr_mem); |
| 1673 | |
| 1674 | if (runshdr != NULL) |
| 1675 | { |
| 1676 | if (runshdr->sh_type == SHT_GNU_versym |
| 1677 | && runshdr->sh_link == elf_ndxscn (scn)) |
| 1678 | /* Bingo, found the version information. Now get the data. */ |
| 1679 | versym_data = elf_getdata (runscn, NULL); |
| 1680 | else if (runshdr->sh_type == SHT_GNU_verneed) |
| 1681 | { |
| 1682 | /* This is the information about the needed versions. */ |
| 1683 | verneed_data = elf_getdata (runscn, NULL); |
| 1684 | verneed_stridx = runshdr->sh_link; |
| 1685 | } |
| 1686 | else if (runshdr->sh_type == SHT_GNU_verdef) |
| 1687 | { |
| 1688 | /* This is the information about the defined versions. */ |
| 1689 | verdef_data = elf_getdata (runscn, NULL); |
| 1690 | verdef_stridx = runshdr->sh_link; |
| 1691 | } |
| 1692 | else if (runshdr->sh_type == SHT_SYMTAB_SHNDX |
| 1693 | && runshdr->sh_link == elf_ndxscn (scn)) |
| 1694 | /* Extended section index. */ |
| 1695 | xndx_data = elf_getdata (runscn, NULL); |
| 1696 | } |
| 1697 | } |
| 1698 | |
| 1699 | /* Get the section header string table index. */ |
| 1700 | if (elf_getshstrndx (ebl->elf, &shstrndx) < 0) |
| 1701 | error (EXIT_FAILURE, 0, |
| 1702 | gettext ("cannot get section header string table index")); |
| 1703 | |
| 1704 | /* Now we can compute the number of entries in the section. */ |
| 1705 | nsyms = data->d_size / (class == ELFCLASS32 |
| 1706 | ? sizeof (Elf32_Sym) : sizeof (Elf64_Sym)); |
| 1707 | |
| 1708 | printf (ngettext ("\nSymbol table [%2u] '%s' contains %u entry:\n", |
| 1709 | "\nSymbol table [%2u] '%s' contains %u entries:\n", |
| 1710 | nsyms), |
| 1711 | (unsigned int) elf_ndxscn (scn), |
| 1712 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name), nsyms); |
| 1713 | printf (ngettext (" %lu local symbol String table: [%2u] '%s'\n", |
| 1714 | " %lu local symbols String table: [%2u] '%s'\n", |
| 1715 | shdr->sh_info), |
| 1716 | (unsigned long int) shdr->sh_info, |
| 1717 | (unsigned int) shdr->sh_link, |
| 1718 | elf_strptr (ebl->elf, shstrndx, |
| 1719 | gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link), |
| 1720 | &glink)->sh_name)); |
| 1721 | |
| 1722 | fputs_unlocked (class == ELFCLASS32 |
| 1723 | ? gettext ("\ |
| 1724 | Num: Value Size Type Bind Vis Ndx Name\n") |
| 1725 | : gettext ("\ |
| 1726 | Num: Value Size Type Bind Vis Ndx Name\n"), |
| 1727 | stdout); |
| 1728 | |
| 1729 | for (cnt = 0; cnt < nsyms; ++cnt) |
| 1730 | { |
| 1731 | char typebuf[64]; |
| 1732 | char bindbuf[64]; |
| 1733 | char scnbuf[64]; |
| 1734 | Elf32_Word xndx; |
| 1735 | GElf_Sym sym_mem; |
| 1736 | GElf_Sym *sym = gelf_getsymshndx (data, xndx_data, cnt, &sym_mem, &xndx); |
| 1737 | |
| 1738 | if (sym == NULL) |
| 1739 | continue; |
| 1740 | |
| 1741 | /* Determine the real section index. */ |
| 1742 | if (sym->st_shndx != SHN_XINDEX) |
| 1743 | xndx = sym->st_shndx; |
| 1744 | |
| 1745 | printf (gettext ("\ |
| 1746 | %5u: %0*" PRIx64 " %6" PRId64 " %-7s %-6s %-9s %6s %s"), |
| 1747 | cnt, |
| 1748 | class == ELFCLASS32 ? 8 : 16, |
| 1749 | sym->st_value, |
| 1750 | sym->st_size, |
| 1751 | ebl_symbol_type_name (ebl, GELF_ST_TYPE (sym->st_info), |
| 1752 | typebuf, sizeof (typebuf)), |
| 1753 | ebl_symbol_binding_name (ebl, GELF_ST_BIND (sym->st_info), |
| 1754 | bindbuf, sizeof (bindbuf)), |
| 1755 | get_visibility_type (GELF_ST_VISIBILITY (sym->st_other)), |
| 1756 | ebl_section_name (ebl, sym->st_shndx, xndx, scnbuf, |
| 1757 | sizeof (scnbuf), NULL, shnum), |
| 1758 | elf_strptr (ebl->elf, shdr->sh_link, sym->st_name)); |
| 1759 | |
| 1760 | if (versym_data != NULL) |
| 1761 | { |
| 1762 | /* Get the version information. */ |
| 1763 | GElf_Versym versym_mem; |
| 1764 | GElf_Versym *versym; |
| 1765 | |
| 1766 | versym = gelf_getversym (versym_data, cnt, &versym_mem); |
| 1767 | |
| 1768 | if (versym != NULL && ((*versym & 0x8000) != 0 || *versym > 1)) |
| 1769 | { |
| 1770 | bool is_nobits = false; |
| 1771 | bool check_def = xndx != SHN_UNDEF; |
| 1772 | |
| 1773 | if (xndx < SHN_LORESERVE || sym->st_shndx == SHN_XINDEX) |
| 1774 | { |
| 1775 | GElf_Shdr symshdr_mem; |
| 1776 | GElf_Shdr *symshdr = |
| 1777 | gelf_getshdr (elf_getscn (ebl->elf, xndx), &symshdr_mem); |
| 1778 | |
| 1779 | is_nobits = (symshdr != NULL |
| 1780 | && symshdr->sh_type == SHT_NOBITS); |
| 1781 | } |
| 1782 | |
| 1783 | if (is_nobits || ! check_def) |
| 1784 | { |
| 1785 | /* We must test both. */ |
| 1786 | GElf_Verneed verneed_mem; |
| 1787 | GElf_Verneed *verneed; |
| 1788 | GElf_Vernaux vernaux_mem; |
| 1789 | GElf_Vernaux *vernaux = NULL; |
| 1790 | size_t vn_offset = 0; |
| 1791 | |
| 1792 | verneed = gelf_getverneed (verneed_data, 0, &verneed_mem); |
| 1793 | while (verneed != NULL) |
| 1794 | { |
| 1795 | size_t vna_offset = vn_offset; |
| 1796 | |
| 1797 | vernaux = gelf_getvernaux (verneed_data, |
| 1798 | vna_offset += verneed->vn_aux, |
| 1799 | &vernaux_mem); |
| 1800 | while (vernaux != NULL |
| 1801 | && vernaux->vna_other != *versym |
| 1802 | && vernaux->vna_next != 0) |
| 1803 | { |
| 1804 | /* Update the offset. */ |
| 1805 | vna_offset += vernaux->vna_next; |
| 1806 | |
| 1807 | vernaux = (vernaux->vna_next == 0 |
| 1808 | ? NULL |
| 1809 | : gelf_getvernaux (verneed_data, |
| 1810 | vna_offset, |
| 1811 | &vernaux_mem)); |
| 1812 | } |
| 1813 | |
| 1814 | /* Check whether we found the version. */ |
| 1815 | if (vernaux != NULL && vernaux->vna_other == *versym) |
| 1816 | /* Found it. */ |
| 1817 | break; |
| 1818 | |
| 1819 | vn_offset += verneed->vn_next; |
| 1820 | verneed = (verneed->vn_next == 0 |
| 1821 | ? NULL |
| 1822 | : gelf_getverneed (verneed_data, vn_offset, |
| 1823 | &verneed_mem)); |
| 1824 | } |
| 1825 | |
| 1826 | if (vernaux != NULL && vernaux->vna_other == *versym) |
| 1827 | { |
| 1828 | printf ("@%s (%u)", |
| 1829 | elf_strptr (ebl->elf, verneed_stridx, |
| 1830 | vernaux->vna_name), |
| 1831 | (unsigned int) vernaux->vna_other); |
| 1832 | check_def = 0; |
| 1833 | } |
| 1834 | else if (! is_nobits) |
| 1835 | error (0, 0, gettext ("bad dynamic symbol")); |
| 1836 | else |
| 1837 | check_def = 1; |
| 1838 | } |
| 1839 | |
| 1840 | if (check_def && *versym != 0x8001) |
| 1841 | { |
| 1842 | /* We must test both. */ |
| 1843 | GElf_Verdef verdef_mem; |
| 1844 | GElf_Verdef *verdef; |
| 1845 | size_t vd_offset = 0; |
| 1846 | |
| 1847 | verdef = gelf_getverdef (verdef_data, 0, &verdef_mem); |
| 1848 | while (verdef != NULL) |
| 1849 | { |
| 1850 | if (verdef->vd_ndx == (*versym & 0x7fff)) |
| 1851 | /* Found the definition. */ |
| 1852 | break; |
| 1853 | |
| 1854 | vd_offset += verdef->vd_next; |
| 1855 | verdef = (verdef->vd_next == 0 |
| 1856 | ? NULL |
| 1857 | : gelf_getverdef (verdef_data, vd_offset, |
| 1858 | &verdef_mem)); |
| 1859 | } |
| 1860 | |
| 1861 | if (verdef != NULL) |
| 1862 | { |
| 1863 | GElf_Verdaux verdaux_mem; |
| 1864 | GElf_Verdaux *verdaux; |
| 1865 | |
| 1866 | verdaux = gelf_getverdaux (verdef_data, |
| 1867 | vd_offset + verdef->vd_aux, |
| 1868 | &verdaux_mem); |
| 1869 | |
| 1870 | if (verdaux != NULL) |
| 1871 | printf ((*versym & 0x8000) ? "@%s" : "@@%s", |
| 1872 | elf_strptr (ebl->elf, verdef_stridx, |
| 1873 | verdaux->vda_name)); |
| 1874 | } |
| 1875 | } |
| 1876 | } |
| 1877 | } |
| 1878 | |
| 1879 | putchar ('\n'); |
| 1880 | } |
| 1881 | } |
| 1882 | |
| 1883 | |
| 1884 | /* Print version information. */ |
| 1885 | static void |
| 1886 | print_verinfo (Ebl *ebl) |
| 1887 | { |
| 1888 | /* Find the version information sections. For this we have to |
| 1889 | search through the section table. */ |
| 1890 | Elf_Scn *scn = NULL; |
| 1891 | |
| 1892 | while ((scn = elf_nextscn (ebl->elf, scn)) != NULL) |
| 1893 | { |
| 1894 | /* Handle the section if it is part of the versioning handling. */ |
| 1895 | GElf_Shdr shdr_mem; |
| 1896 | GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); |
| 1897 | |
| 1898 | if (shdr != NULL) |
| 1899 | { |
| 1900 | if (shdr->sh_type == SHT_GNU_verneed) |
| 1901 | handle_verneed (ebl, scn, shdr); |
| 1902 | else if (shdr->sh_type == SHT_GNU_verdef) |
| 1903 | handle_verdef (ebl, scn, shdr); |
| 1904 | else if (shdr->sh_type == SHT_GNU_versym) |
| 1905 | handle_versym (ebl, scn, shdr); |
| 1906 | } |
| 1907 | } |
| 1908 | } |
| 1909 | |
| 1910 | |
| 1911 | static const char * |
| 1912 | get_ver_flags (unsigned int flags) |
| 1913 | { |
| 1914 | static char buf[32]; |
| 1915 | char *endp; |
| 1916 | |
| 1917 | if (flags == 0) |
| 1918 | return gettext ("none"); |
| 1919 | |
| 1920 | if (flags & VER_FLG_BASE) |
| 1921 | endp = stpcpy (buf, "BASE "); |
| 1922 | else |
| 1923 | endp = buf; |
| 1924 | |
| 1925 | if (flags & VER_FLG_WEAK) |
| 1926 | { |
| 1927 | if (endp != buf) |
| 1928 | endp = stpcpy (endp, "| "); |
| 1929 | |
| 1930 | endp = stpcpy (endp, "WEAK "); |
| 1931 | } |
| 1932 | |
| 1933 | if (flags & ~(VER_FLG_BASE | VER_FLG_WEAK)) |
| 1934 | { |
| 1935 | strncpy (endp, gettext ("| <unknown>"), buf + sizeof (buf) - endp); |
| 1936 | buf[sizeof (buf) - 1] = '\0'; |
| 1937 | } |
| 1938 | |
| 1939 | return buf; |
| 1940 | } |
| 1941 | |
| 1942 | |
| 1943 | static void |
| 1944 | handle_verneed (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr) |
| 1945 | { |
| 1946 | Elf_Data *data; |
| 1947 | int class = gelf_getclass (ebl->elf); |
| 1948 | GElf_Shdr glink; |
| 1949 | int cnt; |
| 1950 | unsigned int offset; |
| 1951 | size_t shstrndx; |
| 1952 | |
| 1953 | /* Get the data of the section. */ |
| 1954 | data = elf_getdata (scn, NULL); |
| 1955 | if (data == NULL) |
| 1956 | return; |
| 1957 | |
| 1958 | /* Get the section header string table index. */ |
| 1959 | if (elf_getshstrndx (ebl->elf, &shstrndx) < 0) |
| 1960 | error (EXIT_FAILURE, 0, |
| 1961 | gettext ("cannot get section header string table index")); |
| 1962 | |
| 1963 | printf (ngettext ("\ |
| 1964 | \nVersion needs section [%2u] '%s' contains %d entry:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'\n", |
| 1965 | "\ |
| 1966 | \nVersion needs section [%2u] '%s' contains %d entries:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'\n", |
| 1967 | shdr->sh_info), |
| 1968 | (unsigned int) elf_ndxscn (scn), |
| 1969 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name), shdr->sh_info, |
| 1970 | class == ELFCLASS32 ? 10 : 18, shdr->sh_addr, |
| 1971 | shdr->sh_offset, |
| 1972 | (unsigned int) shdr->sh_link, |
| 1973 | elf_strptr (ebl->elf, shstrndx, |
| 1974 | gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link), |
| 1975 | &glink)->sh_name)); |
| 1976 | |
| 1977 | offset = 0; |
| 1978 | for (cnt = shdr->sh_info; --cnt >= 0; ) |
| 1979 | { |
| 1980 | GElf_Verneed needmem; |
| 1981 | GElf_Verneed *need; |
| 1982 | unsigned int auxoffset; |
| 1983 | int cnt2; |
| 1984 | |
| 1985 | /* Get the data at the next offset. */ |
| 1986 | need = gelf_getverneed (data, offset, &needmem); |
| 1987 | if (need == NULL) |
| 1988 | break; |
| 1989 | |
| 1990 | printf (gettext (" %#06x: Version: %hu File: %s Cnt: %hu\n"), |
| 1991 | offset, (unsigned short int) need->vn_version, |
| 1992 | elf_strptr (ebl->elf, shdr->sh_link, need->vn_file), |
| 1993 | (unsigned short int) need->vn_cnt); |
| 1994 | |
| 1995 | auxoffset = offset + need->vn_aux; |
| 1996 | for (cnt2 = need->vn_cnt; --cnt2 >= 0; ) |
| 1997 | { |
| 1998 | GElf_Vernaux auxmem; |
| 1999 | GElf_Vernaux *aux; |
| 2000 | |
| 2001 | aux = gelf_getvernaux (data, auxoffset, &auxmem); |
| 2002 | if (aux == NULL) |
| 2003 | break; |
| 2004 | |
| 2005 | printf (gettext (" %#06x: Name: %s Flags: %s Version: %hu\n"), |
| 2006 | auxoffset, |
| 2007 | elf_strptr (ebl->elf, shdr->sh_link, aux->vna_name), |
| 2008 | get_ver_flags (aux->vna_flags), |
| 2009 | (unsigned short int) aux->vna_other); |
| 2010 | |
| 2011 | auxoffset += aux->vna_next; |
| 2012 | } |
| 2013 | |
| 2014 | /* Find the next offset. */ |
| 2015 | offset += need->vn_next; |
| 2016 | } |
| 2017 | } |
| 2018 | |
| 2019 | |
| 2020 | static void |
| 2021 | handle_verdef (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr) |
| 2022 | { |
| 2023 | Elf_Data *data; |
| 2024 | int class = gelf_getclass (ebl->elf); |
| 2025 | GElf_Shdr glink; |
| 2026 | int cnt; |
| 2027 | unsigned int offset; |
| 2028 | size_t shstrndx; |
| 2029 | |
| 2030 | /* Get the data of the section. */ |
| 2031 | data = elf_getdata (scn, NULL); |
| 2032 | if (data == NULL) |
| 2033 | return; |
| 2034 | |
| 2035 | /* Get the section header string table index. */ |
| 2036 | if (elf_getshstrndx (ebl->elf, &shstrndx) < 0) |
| 2037 | error (EXIT_FAILURE, 0, |
| 2038 | gettext ("cannot get section header string table index")); |
| 2039 | |
| 2040 | printf (ngettext ("\ |
| 2041 | \nVersion definition section [%2u] '%s' contains %d entry:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'\n", |
| 2042 | "\ |
| 2043 | \nVersion definition section [%2u] '%s' contains %d entries:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'\n", |
| 2044 | shdr->sh_info), |
| 2045 | (unsigned int) elf_ndxscn (scn), |
| 2046 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name), |
| 2047 | shdr->sh_info, |
| 2048 | class == ELFCLASS32 ? 10 : 18, shdr->sh_addr, |
| 2049 | shdr->sh_offset, |
| 2050 | (unsigned int) shdr->sh_link, |
| 2051 | elf_strptr (ebl->elf, shstrndx, |
| 2052 | gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link), |
| 2053 | &glink)->sh_name)); |
| 2054 | |
| 2055 | offset = 0; |
| 2056 | for (cnt = shdr->sh_info; --cnt >= 0; ) |
| 2057 | { |
| 2058 | GElf_Verdef defmem; |
| 2059 | GElf_Verdef *def; |
| 2060 | GElf_Verdaux auxmem; |
| 2061 | GElf_Verdaux *aux; |
| 2062 | unsigned int auxoffset; |
| 2063 | int cnt2; |
| 2064 | |
| 2065 | /* Get the data at the next offset. */ |
| 2066 | def = gelf_getverdef (data, offset, &defmem); |
| 2067 | if (def == NULL) |
| 2068 | break; |
| 2069 | |
| 2070 | auxoffset = offset + def->vd_aux; |
| 2071 | aux = gelf_getverdaux (data, auxoffset, &auxmem); |
| 2072 | if (aux == NULL) |
| 2073 | break; |
| 2074 | |
| 2075 | printf (gettext ("\ |
| 2076 | %#06x: Version: %hd Flags: %s Index: %hd Cnt: %hd Name: %s\n"), |
| 2077 | offset, def->vd_version, |
| 2078 | get_ver_flags (def->vd_flags), |
| 2079 | def->vd_ndx, |
| 2080 | def->vd_cnt, |
| 2081 | elf_strptr (ebl->elf, shdr->sh_link, aux->vda_name)); |
| 2082 | |
| 2083 | auxoffset += aux->vda_next; |
| 2084 | for (cnt2 = 1; cnt2 < def->vd_cnt; ++cnt2) |
| 2085 | { |
| 2086 | aux = gelf_getverdaux (data, auxoffset, &auxmem); |
| 2087 | if (aux == NULL) |
| 2088 | break; |
| 2089 | |
| 2090 | printf (gettext (" %#06x: Parent %d: %s\n"), |
| 2091 | auxoffset, cnt2, |
| 2092 | elf_strptr (ebl->elf, shdr->sh_link, aux->vda_name)); |
| 2093 | |
| 2094 | auxoffset += aux->vda_next; |
| 2095 | } |
| 2096 | |
| 2097 | /* Find the next offset. */ |
| 2098 | offset += def->vd_next; |
| 2099 | } |
| 2100 | } |
| 2101 | |
| 2102 | |
| 2103 | static void |
| 2104 | handle_versym (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr) |
| 2105 | { |
| 2106 | Elf_Data *data; |
| 2107 | int class = gelf_getclass (ebl->elf); |
| 2108 | Elf_Scn *verscn; |
| 2109 | GElf_Shdr glink; |
| 2110 | Elf_Scn *defscn; |
| 2111 | Elf_Scn *needscn; |
| 2112 | const char **vername; |
| 2113 | const char **filename; |
| 2114 | size_t nvername; |
| 2115 | unsigned int cnt; |
| 2116 | size_t shstrndx; |
| 2117 | |
| 2118 | /* Get the data of the section. */ |
| 2119 | data = elf_getdata (scn, NULL); |
| 2120 | if (data == NULL) |
| 2121 | return; |
| 2122 | |
| 2123 | /* Get the section header string table index. */ |
| 2124 | if (elf_getshstrndx (ebl->elf, &shstrndx) < 0) |
| 2125 | error (EXIT_FAILURE, 0, |
| 2126 | gettext ("cannot get section header string table index")); |
| 2127 | |
| 2128 | /* We have to find the version definition section and extract the |
| 2129 | version names. */ |
| 2130 | defscn = NULL; |
| 2131 | needscn = NULL; |
| 2132 | |
| 2133 | verscn = NULL; |
| 2134 | while ((verscn = elf_nextscn (ebl->elf, verscn)) != NULL) |
| 2135 | { |
| 2136 | GElf_Shdr vershdr_mem; |
| 2137 | GElf_Shdr *vershdr = gelf_getshdr (verscn, &vershdr_mem); |
| 2138 | |
| 2139 | if (vershdr != NULL) |
| 2140 | { |
| 2141 | if (vershdr->sh_type == SHT_GNU_verdef) |
| 2142 | defscn = verscn; |
| 2143 | else if (vershdr->sh_type == SHT_GNU_verneed) |
| 2144 | needscn = verscn; |
| 2145 | } |
| 2146 | } |
| 2147 | |
| 2148 | if (defscn != NULL || needscn != NULL) |
| 2149 | { |
| 2150 | /* We have a version information (better should have). Now get |
| 2151 | the version names. First find the maximum version number. */ |
| 2152 | nvername = 0; |
| 2153 | if (defscn != NULL) |
| 2154 | { |
| 2155 | /* Run through the version definitions and find the highest |
| 2156 | index. */ |
| 2157 | unsigned int offset = 0; |
| 2158 | Elf_Data *defdata; |
| 2159 | GElf_Shdr defshdrmem; |
| 2160 | GElf_Shdr *defshdr; |
| 2161 | |
| 2162 | defdata = elf_getdata (defscn, NULL); |
| 2163 | if (defdata == NULL) |
| 2164 | return; |
| 2165 | |
| 2166 | defshdr = gelf_getshdr (defscn, &defshdrmem); |
| 2167 | if (defshdr == NULL) |
| 2168 | return; |
| 2169 | |
| 2170 | for (cnt = 0; cnt < defshdr->sh_info; ++cnt) |
| 2171 | { |
| 2172 | GElf_Verdef defmem; |
| 2173 | GElf_Verdef *def; |
| 2174 | |
| 2175 | /* Get the data at the next offset. */ |
| 2176 | def = gelf_getverdef (defdata, offset, &defmem); |
| 2177 | if (def == NULL) |
| 2178 | break; |
| 2179 | |
| 2180 | nvername = MAX (nvername, (size_t) (def->vd_ndx & 0x7fff)); |
| 2181 | |
| 2182 | offset += def->vd_next; |
| 2183 | } |
| 2184 | } |
| 2185 | if (needscn != NULL) |
| 2186 | { |
| 2187 | unsigned int offset = 0; |
| 2188 | Elf_Data *needdata; |
| 2189 | GElf_Shdr needshdrmem; |
| 2190 | GElf_Shdr *needshdr; |
| 2191 | |
| 2192 | needdata = elf_getdata (needscn, NULL); |
| 2193 | if (needdata == NULL) |
| 2194 | return; |
| 2195 | |
| 2196 | needshdr = gelf_getshdr (needscn, &needshdrmem); |
| 2197 | if (needshdr == NULL) |
| 2198 | return; |
| 2199 | |
| 2200 | for (cnt = 0; cnt < needshdr->sh_info; ++cnt) |
| 2201 | { |
| 2202 | GElf_Verneed needmem; |
| 2203 | GElf_Verneed *need; |
| 2204 | unsigned int auxoffset; |
| 2205 | int cnt2; |
| 2206 | |
| 2207 | /* Get the data at the next offset. */ |
| 2208 | need = gelf_getverneed (needdata, offset, &needmem); |
| 2209 | if (need == NULL) |
| 2210 | break; |
| 2211 | |
| 2212 | /* Run through the auxiliary entries. */ |
| 2213 | auxoffset = offset + need->vn_aux; |
| 2214 | for (cnt2 = need->vn_cnt; --cnt2 >= 0; ) |
| 2215 | { |
| 2216 | GElf_Vernaux auxmem; |
| 2217 | GElf_Vernaux *aux; |
| 2218 | |
| 2219 | aux = gelf_getvernaux (needdata, auxoffset, &auxmem); |
| 2220 | if (aux == NULL) |
| 2221 | break; |
| 2222 | |
| 2223 | nvername = MAX (nvername, |
| 2224 | (size_t) (aux->vna_other & 0x7fff)); |
| 2225 | |
| 2226 | auxoffset += aux->vna_next; |
| 2227 | } |
| 2228 | |
| 2229 | offset += need->vn_next; |
| 2230 | } |
| 2231 | } |
| 2232 | |
| 2233 | /* This is the number of versions we know about. */ |
| 2234 | ++nvername; |
| 2235 | |
| 2236 | /* Allocate the array. */ |
| 2237 | vername = (const char **) alloca (nvername * sizeof (const char *)); |
| 2238 | filename = (const char **) alloca (nvername * sizeof (const char *)); |
| 2239 | |
| 2240 | /* Run through the data structures again and collect the strings. */ |
| 2241 | if (defscn != NULL) |
| 2242 | { |
| 2243 | /* Run through the version definitions and find the highest |
| 2244 | index. */ |
| 2245 | unsigned int offset = 0; |
| 2246 | Elf_Data *defdata; |
| 2247 | GElf_Shdr defshdrmem; |
| 2248 | GElf_Shdr *defshdr; |
| 2249 | |
| 2250 | defdata = elf_getdata (defscn, NULL); |
| 2251 | if (defdata == NULL) |
| 2252 | return; |
| 2253 | |
| 2254 | defshdr = gelf_getshdr (defscn, &defshdrmem); |
| 2255 | if (defshdr == NULL) |
| 2256 | return; |
| 2257 | |
| 2258 | for (cnt = 0; cnt < defshdr->sh_info; ++cnt) |
| 2259 | { |
| 2260 | GElf_Verdef defmem; |
| 2261 | GElf_Verdef *def; |
| 2262 | GElf_Verdaux auxmem; |
| 2263 | GElf_Verdaux *aux; |
| 2264 | |
| 2265 | /* Get the data at the next offset. */ |
| 2266 | def = gelf_getverdef (defdata, offset, &defmem); |
| 2267 | if (def == NULL) |
| 2268 | break; |
| 2269 | |
| 2270 | aux = gelf_getverdaux (defdata, offset + def->vd_aux, &auxmem); |
| 2271 | if (aux == NULL) |
| 2272 | break; |
| 2273 | |
| 2274 | vername[def->vd_ndx & 0x7fff] |
| 2275 | = elf_strptr (ebl->elf, defshdr->sh_link, aux->vda_name); |
| 2276 | filename[def->vd_ndx & 0x7fff] = NULL; |
| 2277 | |
| 2278 | offset += def->vd_next; |
| 2279 | } |
| 2280 | } |
| 2281 | if (needscn != NULL) |
| 2282 | { |
| 2283 | unsigned int offset = 0; |
| 2284 | Elf_Data *needdata; |
| 2285 | GElf_Shdr needshdrmem; |
| 2286 | GElf_Shdr *needshdr; |
| 2287 | |
| 2288 | needdata = elf_getdata (needscn, NULL); |
| 2289 | if (needdata == NULL) |
| 2290 | return; |
| 2291 | |
| 2292 | needshdr = gelf_getshdr (needscn, &needshdrmem); |
| 2293 | if (needshdr == NULL) |
| 2294 | return; |
| 2295 | |
| 2296 | for (cnt = 0; cnt < needshdr->sh_info; ++cnt) |
| 2297 | { |
| 2298 | GElf_Verneed needmem; |
| 2299 | GElf_Verneed *need; |
| 2300 | unsigned int auxoffset; |
| 2301 | int cnt2; |
| 2302 | |
| 2303 | /* Get the data at the next offset. */ |
| 2304 | need = gelf_getverneed (needdata, offset, &needmem); |
| 2305 | if (need == NULL) |
| 2306 | break; |
| 2307 | |
| 2308 | /* Run through the auxiliary entries. */ |
| 2309 | auxoffset = offset + need->vn_aux; |
| 2310 | for (cnt2 = need->vn_cnt; --cnt2 >= 0; ) |
| 2311 | { |
| 2312 | GElf_Vernaux auxmem; |
| 2313 | GElf_Vernaux *aux; |
| 2314 | |
| 2315 | aux = gelf_getvernaux (needdata, auxoffset, &auxmem); |
| 2316 | if (aux == NULL) |
| 2317 | break; |
| 2318 | |
| 2319 | vername[aux->vna_other & 0x7fff] |
| 2320 | = elf_strptr (ebl->elf, needshdr->sh_link, aux->vna_name); |
| 2321 | filename[aux->vna_other & 0x7fff] |
| 2322 | = elf_strptr (ebl->elf, needshdr->sh_link, need->vn_file); |
| 2323 | |
| 2324 | auxoffset += aux->vna_next; |
| 2325 | } |
| 2326 | |
| 2327 | offset += need->vn_next; |
| 2328 | } |
| 2329 | } |
| 2330 | } |
| 2331 | else |
| 2332 | { |
| 2333 | vername = NULL; |
| 2334 | nvername = 1; |
| 2335 | filename = NULL; |
| 2336 | } |
| 2337 | |
| 2338 | /* Print the header. */ |
| 2339 | printf (ngettext ("\ |
| 2340 | \nVersion symbols section [%2u] '%s' contains %d entry:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'", |
| 2341 | "\ |
| 2342 | \nVersion symbols section [%2u] '%s' contains %d entries:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'", |
| 2343 | shdr->sh_size / shdr->sh_entsize), |
| 2344 | (unsigned int) elf_ndxscn (scn), |
| 2345 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name), |
| 2346 | (int) (shdr->sh_size / shdr->sh_entsize), |
| 2347 | class == ELFCLASS32 ? 10 : 18, shdr->sh_addr, |
| 2348 | shdr->sh_offset, |
| 2349 | (unsigned int) shdr->sh_link, |
| 2350 | elf_strptr (ebl->elf, shstrndx, |
| 2351 | gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link), |
| 2352 | &glink)->sh_name)); |
| 2353 | |
| 2354 | /* Now we can finally look at the actual contents of this section. */ |
| 2355 | for (cnt = 0; cnt < shdr->sh_size / shdr->sh_entsize; ++cnt) |
| 2356 | { |
| 2357 | GElf_Versym symmem; |
| 2358 | GElf_Versym *sym; |
| 2359 | ssize_t n; |
| 2360 | |
| 2361 | if (cnt % 2 == 0) |
| 2362 | printf ("\n %4d:", cnt); |
| 2363 | |
| 2364 | sym = gelf_getversym (data, cnt, &symmem); |
| 2365 | if (sym == NULL) |
| 2366 | break; |
| 2367 | |
| 2368 | switch (*sym) |
| 2369 | { |
| 2370 | case 0: |
| 2371 | fputs_unlocked (gettext (" 0 *local* "), |
| 2372 | stdout); |
| 2373 | break; |
| 2374 | |
| 2375 | case 1: |
| 2376 | fputs_unlocked (gettext (" 1 *global* "), |
| 2377 | stdout); |
| 2378 | break; |
| 2379 | |
| 2380 | default: |
| 2381 | n = printf ("%4d%c%s", |
| 2382 | *sym & 0x7fff, *sym & 0x8000 ? 'h' : ' ', |
| 2383 | (unsigned int) (*sym & 0x7fff) < nvername |
| 2384 | ? vername[*sym & 0x7fff] : "???"); |
| 2385 | if ((unsigned int) (*sym & 0x7fff) < nvername |
| 2386 | && filename[*sym & 0x7fff] != NULL) |
| 2387 | n += printf ("(%s)", filename[*sym & 0x7fff]); |
| 2388 | printf ("%*s", MAX (0, 33 - (int) n), " "); |
| 2389 | break; |
| 2390 | } |
| 2391 | } |
| 2392 | putchar ('\n'); |
| 2393 | } |
| 2394 | |
| 2395 | |
| 2396 | static void |
| 2397 | handle_hash (Ebl *ebl) |
| 2398 | { |
| 2399 | /* Find the symbol table(s). For this we have to search through the |
| 2400 | section table. */ |
| 2401 | Elf_Scn *scn = NULL; |
| 2402 | size_t shstrndx; |
| 2403 | |
| 2404 | /* Get the section header string table index. */ |
| 2405 | if (elf_getshstrndx (ebl->elf, &shstrndx) < 0) |
| 2406 | error (EXIT_FAILURE, 0, |
| 2407 | gettext ("cannot get section header string table index")); |
| 2408 | |
| 2409 | while ((scn = elf_nextscn (ebl->elf, scn)) != NULL) |
| 2410 | { |
| 2411 | /* Handle the section if it is a symbol table. */ |
| 2412 | GElf_Shdr shdr_mem; |
| 2413 | GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); |
| 2414 | |
| 2415 | if (shdr != NULL && shdr->sh_type == SHT_HASH) |
| 2416 | { |
| 2417 | Elf_Data *data = elf_getdata (scn, NULL); |
| 2418 | Elf32_Word nbucket; |
| 2419 | Elf32_Word nchain; |
| 2420 | Elf32_Word *bucket; |
| 2421 | Elf32_Word *chain; |
| 2422 | uint32_t *lengths; |
| 2423 | uint32_t *counts; |
| 2424 | Elf32_Word cnt; |
| 2425 | Elf32_Word maxlength = 0; |
| 2426 | Elf32_Word nsyms = 0; |
| 2427 | uint64_t nzero_counts = 0; |
| 2428 | GElf_Shdr glink; |
| 2429 | |
| 2430 | if (data == NULL) |
| 2431 | { |
| 2432 | error (0, 0, gettext ("cannot get data for section %d: %s"), |
| 2433 | (int) elf_ndxscn (scn), elf_errmsg (-1)); |
| 2434 | continue; |
| 2435 | } |
| 2436 | |
| 2437 | nbucket = ((Elf32_Word *) data->d_buf)[0]; |
| 2438 | nchain = ((Elf32_Word *) data->d_buf)[1]; |
| 2439 | bucket = &((Elf32_Word *) data->d_buf)[2]; |
| 2440 | chain = &((Elf32_Word *) data->d_buf)[2 + nbucket]; |
| 2441 | |
| 2442 | printf (ngettext ("\ |
| 2443 | \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", |
| 2444 | "\ |
| 2445 | \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", |
| 2446 | nbucket), |
| 2447 | (unsigned int) elf_ndxscn (scn), |
| 2448 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name), |
| 2449 | (int) nbucket, |
| 2450 | gelf_getclass (ebl->elf) == ELFCLASS32 ? 10 : 18, |
| 2451 | shdr->sh_addr, |
| 2452 | shdr->sh_offset, |
| 2453 | (unsigned int) shdr->sh_link, |
| 2454 | elf_strptr (ebl->elf, shstrndx, |
| 2455 | gelf_getshdr (elf_getscn (ebl->elf, |
| 2456 | shdr->sh_link), |
| 2457 | &glink)->sh_name)); |
| 2458 | |
| 2459 | lengths = (uint32_t *) xcalloc (nbucket, sizeof (uint32_t)); |
| 2460 | |
| 2461 | for (cnt = 0; cnt < nbucket; ++cnt) |
| 2462 | if (bucket[cnt] != 0) |
| 2463 | { |
| 2464 | Elf32_Word inner; |
| 2465 | |
| 2466 | inner = bucket[cnt]; |
| 2467 | while (inner > 0 && inner < nchain) |
| 2468 | { |
| 2469 | ++nsyms; |
| 2470 | if (maxlength < ++lengths[cnt]) |
| 2471 | ++maxlength; |
| 2472 | |
| 2473 | inner = chain[inner]; |
| 2474 | } |
| 2475 | } |
| 2476 | |
| 2477 | counts = (uint32_t *) xcalloc (maxlength + 1, sizeof (uint32_t)); |
| 2478 | |
| 2479 | for (cnt = 0; cnt < nbucket; ++cnt) |
| 2480 | ++counts[lengths[cnt]]; |
| 2481 | |
| 2482 | if (nbucket > 0) |
| 2483 | { |
| 2484 | uint64_t success = 0; |
| 2485 | Elf32_Word acc; |
| 2486 | |
| 2487 | puts (gettext (" Length Number % of total Coverage")); |
| 2488 | printf (gettext (" 0 %6" PRIu32 " %5.1f%%\n"), |
| 2489 | counts[0], (counts[0] * 100.0) / nbucket); |
| 2490 | |
| 2491 | for (cnt = 1; cnt <= maxlength; ++cnt) |
| 2492 | { |
| 2493 | nzero_counts += counts[cnt] * cnt; |
| 2494 | printf (gettext ("\ |
| 2495 | %7d %6" PRIu32 " %5.1f%% %5.1f%%\n"), |
| 2496 | (int) cnt, |
| 2497 | counts[cnt], (counts[cnt] * 100.0) / nbucket, |
| 2498 | (nzero_counts * 100.0) / nsyms); |
| 2499 | } |
| 2500 | |
| 2501 | acc = 0; |
| 2502 | for (cnt = 1; cnt <= maxlength; ++cnt) |
| 2503 | { |
| 2504 | acc += cnt; |
| 2505 | success += counts[cnt] * acc; |
| 2506 | } |
| 2507 | |
| 2508 | printf (gettext ("\ |
| 2509 | Average number of tests: successful lookup: %f\n\ |
| 2510 | unsuccessful lookup: %f\n"), |
| 2511 | (double) success / (double) nzero_counts, |
| 2512 | (double) nzero_counts / (double) nbucket); |
| 2513 | } |
| 2514 | |
| 2515 | free (counts); |
| 2516 | free (lengths); |
| 2517 | } |
| 2518 | } |
| 2519 | } |
| 2520 | |
| 2521 | |
| 2522 | static void |
| 2523 | print_liblist (Ebl *ebl) |
| 2524 | { |
| 2525 | /* Find the library list sections. For this we have to search |
| 2526 | through the section table. */ |
| 2527 | Elf_Scn *scn = NULL; |
| 2528 | |
| 2529 | /* Get the section header string table index. */ |
| 2530 | size_t shstrndx; |
| 2531 | if (elf_getshstrndx (ebl->elf, &shstrndx) < 0) |
| 2532 | error (EXIT_FAILURE, 0, |
| 2533 | gettext ("cannot get section header string table index")); |
| 2534 | |
| 2535 | while ((scn = elf_nextscn (ebl->elf, scn)) != NULL) |
| 2536 | { |
| 2537 | GElf_Shdr shdr_mem; |
| 2538 | GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); |
| 2539 | |
| 2540 | if (shdr != NULL && shdr->sh_type == SHT_GNU_LIBLIST) |
| 2541 | { |
| 2542 | int nentries = shdr->sh_size / shdr->sh_entsize; |
| 2543 | printf (ngettext ("\ |
| 2544 | \nLibrary list section [%2zu] '%s' at offset %#0" PRIx64 " contains %d entry:\n", |
| 2545 | "\ |
| 2546 | \nLibrary list section [%2zu] '%s' at offset %#0" PRIx64 " contains %d entries:\n", |
| 2547 | nentries), |
| 2548 | elf_ndxscn (scn), |
| 2549 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name), |
| 2550 | shdr->sh_offset, |
| 2551 | nentries); |
| 2552 | |
| 2553 | Elf_Data *data = elf_getdata (scn, NULL); |
| 2554 | if (data == NULL) |
| 2555 | return; |
| 2556 | |
| 2557 | puts (gettext ("\ |
| 2558 | Library Time Stamp Checksum Version Flags")); |
| 2559 | |
| 2560 | for (int cnt = 0; cnt < nentries; ++cnt) |
| 2561 | { |
| 2562 | GElf_Lib lib_mem; |
| 2563 | GElf_Lib *lib = gelf_getlib (data, cnt, &lib_mem); |
| 2564 | if (lib == NULL) |
| 2565 | continue; |
| 2566 | |
| 2567 | time_t t = (time_t) lib->l_time_stamp; |
| 2568 | struct tm *tm = gmtime (&t); |
| 2569 | if (tm == NULL) |
| 2570 | continue; |
| 2571 | |
| 2572 | printf (" [%2d] %-29s %04u-%02u-%02uT%02u:%02u:%02u %08x %-7u %u\n", |
| 2573 | cnt, elf_strptr (ebl->elf, shdr->sh_link, lib->l_name), |
| 2574 | tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, |
| 2575 | tm->tm_hour, tm->tm_min, tm->tm_sec, |
| 2576 | (unsigned int) lib->l_checksum, |
| 2577 | (unsigned int) lib->l_version, |
| 2578 | (unsigned int) lib->l_flags); |
| 2579 | } |
| 2580 | } |
| 2581 | } |
| 2582 | } |
| 2583 | |
| 2584 | |
| 2585 | static const char * |
| 2586 | dwarf_tag_string (unsigned int tag) |
| 2587 | { |
| 2588 | static const char *known_tags[] = |
| 2589 | { |
| 2590 | [DW_TAG_array_type] = "array_type", |
| 2591 | [DW_TAG_class_type] = "class_type", |
| 2592 | [DW_TAG_entry_point] = "entry_point", |
| 2593 | [DW_TAG_enumeration_type] = "enumeration_type", |
| 2594 | [DW_TAG_formal_parameter] = "formal_parameter", |
| 2595 | [DW_TAG_imported_declaration] = "imported_declaration", |
| 2596 | [DW_TAG_label] = "label", |
| 2597 | [DW_TAG_lexical_block] = "lexical_block", |
| 2598 | [DW_TAG_member] = "member", |
| 2599 | [DW_TAG_pointer_type] = "pointer_type", |
| 2600 | [DW_TAG_reference_type] = "reference_type", |
| 2601 | [DW_TAG_compile_unit] = "compile_unit", |
| 2602 | [DW_TAG_string_type] = "string_type", |
| 2603 | [DW_TAG_structure_type] = "structure_type", |
| 2604 | [DW_TAG_subroutine_type] = "subroutine_type", |
| 2605 | [DW_TAG_typedef] = "typedef", |
| 2606 | [DW_TAG_union_type] = "union_type", |
| 2607 | [DW_TAG_unspecified_parameters] = "unspecified_parameters", |
| 2608 | [DW_TAG_variant] = "variant", |
| 2609 | [DW_TAG_common_block] = "common_block", |
| 2610 | [DW_TAG_common_inclusion] = "common_inclusion", |
| 2611 | [DW_TAG_inheritance] = "inheritance", |
| 2612 | [DW_TAG_inlined_subroutine] = "inlined_subroutine", |
| 2613 | [DW_TAG_module] = "module", |
| 2614 | [DW_TAG_ptr_to_member_type] = "ptr_to_member_type", |
| 2615 | [DW_TAG_set_type] = "set_type", |
| 2616 | [DW_TAG_subrange_type] = "subrange_type", |
| 2617 | [DW_TAG_with_stmt] = "with_stmt", |
| 2618 | [DW_TAG_access_declaration] = "access_declaration", |
| 2619 | [DW_TAG_base_type] = "base_type", |
| 2620 | [DW_TAG_catch_block] = "catch_block", |
| 2621 | [DW_TAG_const_type] = "const_type", |
| 2622 | [DW_TAG_constant] = "constant", |
| 2623 | [DW_TAG_enumerator] = "enumerator", |
| 2624 | [DW_TAG_file_type] = "file_type", |
| 2625 | [DW_TAG_friend] = "friend", |
| 2626 | [DW_TAG_namelist] = "namelist", |
| 2627 | [DW_TAG_namelist_item] = "namelist_item", |
| 2628 | [DW_TAG_packed_type] = "packed_type", |
| 2629 | [DW_TAG_subprogram] = "subprogram", |
| 2630 | [DW_TAG_template_type_param] = "template_type_param", |
| 2631 | [DW_TAG_template_value_param] = "template_value_param", |
| 2632 | [DW_TAG_thrown_type] = "thrown_type", |
| 2633 | [DW_TAG_try_block] = "try_block", |
| 2634 | [DW_TAG_variant_part] = "variant_part", |
| 2635 | [DW_TAG_variable] = "variable", |
| 2636 | [DW_TAG_volatile_type] = "volatile_type", |
| 2637 | [DW_TAG_dwarf_procedure] = "dwarf_procedure", |
| 2638 | [DW_TAG_restrict_type] = "restrict_type", |
| 2639 | [DW_TAG_interface_type] = "interface_type", |
| 2640 | [DW_TAG_namespace] = "namespace", |
| 2641 | [DW_TAG_imported_module] = "imported_module", |
| 2642 | [DW_TAG_unspecified_type] = "unspecified_type", |
| 2643 | [DW_TAG_partial_unit] = "partial_unit", |
| 2644 | [DW_TAG_imported_unit] = "imported_unit", |
| 2645 | [DW_TAG_unspecified_type] = "unspecified_type", |
| 2646 | [DW_TAG_partial_unit] = "partial_unit", |
| 2647 | [DW_TAG_imported_unit] = "imported_unit", |
| 2648 | [DW_TAG_mutable_type] = "mutable_type", |
| 2649 | }; |
| 2650 | const unsigned int nknown_tags = (sizeof (known_tags) |
| 2651 | / sizeof (known_tags[0])); |
| 2652 | static char buf[40]; |
| 2653 | const char *result = NULL; |
| 2654 | |
| 2655 | if (tag < nknown_tags) |
| 2656 | result = known_tags[tag]; |
| 2657 | |
| 2658 | if (result == NULL) |
| 2659 | /* There are a few known extensions. */ |
| 2660 | switch (tag) |
| 2661 | { |
| 2662 | case DW_TAG_MIPS_loop: |
| 2663 | result = "MIPS_loop"; |
| 2664 | break; |
| 2665 | |
| 2666 | case DW_TAG_format_label: |
| 2667 | result = "format_label"; |
| 2668 | break; |
| 2669 | |
| 2670 | case DW_TAG_function_template: |
| 2671 | result = "function_template"; |
| 2672 | break; |
| 2673 | |
| 2674 | case DW_TAG_class_template: |
| 2675 | result = "class_template"; |
| 2676 | break; |
| 2677 | |
| 2678 | default: |
| 2679 | if (tag < DW_TAG_lo_user) |
| 2680 | snprintf (buf, sizeof buf, gettext ("unknown tag %hx"), tag); |
| 2681 | else |
| 2682 | snprintf (buf, sizeof buf, gettext ("unknown user tag %hx"), tag); |
| 2683 | result = buf; |
| 2684 | break; |
| 2685 | } |
| 2686 | |
| 2687 | return result; |
| 2688 | } |
| 2689 | |
| 2690 | |
| 2691 | static const char * |
| 2692 | dwarf_attr_string (unsigned int attrnum) |
| 2693 | { |
| 2694 | static const char *known_attrs[] = |
| 2695 | { |
| 2696 | [DW_AT_sibling] = "sibling", |
| 2697 | [DW_AT_location] = "location", |
| 2698 | [DW_AT_name] = "name", |
| 2699 | [DW_AT_ordering] = "ordering", |
| 2700 | [DW_AT_subscr_data] = "subscr_data", |
| 2701 | [DW_AT_byte_size] = "byte_size", |
| 2702 | [DW_AT_bit_offset] = "bit_offset", |
| 2703 | [DW_AT_bit_size] = "bit_size", |
| 2704 | [DW_AT_element_list] = "element_list", |
| 2705 | [DW_AT_stmt_list] = "stmt_list", |
| 2706 | [DW_AT_low_pc] = "low_pc", |
| 2707 | [DW_AT_high_pc] = "high_pc", |
| 2708 | [DW_AT_language] = "language", |
| 2709 | [DW_AT_member] = "member", |
| 2710 | [DW_AT_discr] = "discr", |
| 2711 | [DW_AT_discr_value] = "discr_value", |
| 2712 | [DW_AT_visibility] = "visibility", |
| 2713 | [DW_AT_import] = "import", |
| 2714 | [DW_AT_string_length] = "string_length", |
| 2715 | [DW_AT_common_reference] = "common_reference", |
| 2716 | [DW_AT_comp_dir] = "comp_dir", |
| 2717 | [DW_AT_const_value] = "const_value", |
| 2718 | [DW_AT_containing_type] = "containing_type", |
| 2719 | [DW_AT_default_value] = "default_value", |
| 2720 | [DW_AT_inline] = "inline", |
| 2721 | [DW_AT_is_optional] = "is_optional", |
| 2722 | [DW_AT_lower_bound] = "lower_bound", |
| 2723 | [DW_AT_producer] = "producer", |
| 2724 | [DW_AT_prototyped] = "prototyped", |
| 2725 | [DW_AT_return_addr] = "return_addr", |
| 2726 | [DW_AT_start_scope] = "start_scope", |
| 2727 | [DW_AT_stride_size] = "stride_size", |
| 2728 | [DW_AT_upper_bound] = "upper_bound", |
| 2729 | [DW_AT_abstract_origin] = "abstract_origin", |
| 2730 | [DW_AT_accessibility] = "accessibility", |
| 2731 | [DW_AT_address_class] = "address_class", |
| 2732 | [DW_AT_artificial] = "artificial", |
| 2733 | [DW_AT_base_types] = "base_types", |
| 2734 | [DW_AT_calling_convention] = "calling_convention", |
| 2735 | [DW_AT_count] = "count", |
| 2736 | [DW_AT_data_member_location] = "data_member_location", |
| 2737 | [DW_AT_decl_column] = "decl_column", |
| 2738 | [DW_AT_decl_file] = "decl_file", |
| 2739 | [DW_AT_decl_line] = "decl_line", |
| 2740 | [DW_AT_declaration] = "declaration", |
| 2741 | [DW_AT_discr_list] = "discr_list", |
| 2742 | [DW_AT_encoding] = "encoding", |
| 2743 | [DW_AT_external] = "external", |
| 2744 | [DW_AT_frame_base] = "frame_base", |
| 2745 | [DW_AT_friend] = "friend", |
| 2746 | [DW_AT_identifier_case] = "identifier_case", |
| 2747 | [DW_AT_macro_info] = "macro_info", |
| 2748 | [DW_AT_namelist_items] = "namelist_items", |
| 2749 | [DW_AT_priority] = "priority", |
| 2750 | [DW_AT_segment] = "segment", |
| 2751 | [DW_AT_specification] = "specification", |
| 2752 | [DW_AT_static_link] = "static_link", |
| 2753 | [DW_AT_type] = "type", |
| 2754 | [DW_AT_use_location] = "use_location", |
| 2755 | [DW_AT_variable_parameter] = "variable_parameter", |
| 2756 | [DW_AT_virtuality] = "virtuality", |
| 2757 | [DW_AT_vtable_elem_location] = "vtable_elem_location", |
| 2758 | [DW_AT_allocated] = "allocated", |
| 2759 | [DW_AT_associated] = "associated", |
| 2760 | [DW_AT_data_location] = "data_location", |
| 2761 | [DW_AT_stride] = "stride", |
| 2762 | [DW_AT_entry_pc] = "entry_pc", |
| 2763 | [DW_AT_use_UTF8] = "use_UTF8", |
| 2764 | [DW_AT_extension] = "extension", |
| 2765 | [DW_AT_ranges] = "ranges", |
| 2766 | [DW_AT_trampoline] = "trampoline", |
| 2767 | [DW_AT_call_column] = "call_column", |
| 2768 | [DW_AT_call_file] = "call_file", |
| 2769 | [DW_AT_call_line] = "call_line", |
| 2770 | [DW_AT_description] = "description" |
| 2771 | }; |
| 2772 | const unsigned int nknown_attrs = (sizeof (known_attrs) |
| 2773 | / sizeof (known_attrs[0])); |
| 2774 | static char buf[40]; |
| 2775 | const char *result = NULL; |
| 2776 | |
| 2777 | if (attrnum < nknown_attrs) |
| 2778 | result = known_attrs[attrnum]; |
| 2779 | |
| 2780 | if (result == NULL) |
| 2781 | /* There are a few known extensions. */ |
| 2782 | switch (attrnum) |
| 2783 | { |
| 2784 | case DW_AT_MIPS_fde: |
| 2785 | result = "MIPS_fde"; |
| 2786 | break; |
| 2787 | |
| 2788 | case DW_AT_MIPS_loop_begin: |
| 2789 | result = "MIPS_loop_begin"; |
| 2790 | break; |
| 2791 | |
| 2792 | case DW_AT_MIPS_tail_loop_begin: |
| 2793 | result = "MIPS_tail_loop_begin"; |
| 2794 | break; |
| 2795 | |
| 2796 | case DW_AT_MIPS_epilog_begin: |
| 2797 | result = "MIPS_epilog_begin"; |
| 2798 | break; |
| 2799 | |
| 2800 | case DW_AT_MIPS_loop_unroll_factor: |
| 2801 | result = "MIPS_loop_unroll_factor"; |
| 2802 | break; |
| 2803 | |
| 2804 | case DW_AT_MIPS_software_pipeline_depth: |
| 2805 | result = "MIPS_software_pipeline_depth"; |
| 2806 | break; |
| 2807 | |
| 2808 | case DW_AT_MIPS_linkage_name: |
| 2809 | result = "MIPS_linkage_name"; |
| 2810 | break; |
| 2811 | |
| 2812 | case DW_AT_MIPS_stride: |
| 2813 | result = "MIPS_stride"; |
| 2814 | break; |
| 2815 | |
| 2816 | case DW_AT_MIPS_abstract_name: |
| 2817 | result = "MIPS_abstract_name"; |
| 2818 | break; |
| 2819 | |
| 2820 | case DW_AT_MIPS_clone_origin: |
| 2821 | result = "MIPS_clone_origin"; |
| 2822 | break; |
| 2823 | |
| 2824 | case DW_AT_MIPS_has_inlines: |
| 2825 | result = "MIPS_has_inlines"; |
| 2826 | break; |
| 2827 | |
| 2828 | case DW_AT_MIPS_stride_byte: |
| 2829 | result = "MIPS_stride_byte"; |
| 2830 | break; |
| 2831 | |
| 2832 | case DW_AT_MIPS_stride_elem: |
| 2833 | result = "MIPS_stride_elem"; |
| 2834 | break; |
| 2835 | |
| 2836 | case DW_AT_MIPS_ptr_dopetype: |
| 2837 | result = "MIPS_ptr_dopetype"; |
| 2838 | break; |
| 2839 | |
| 2840 | case DW_AT_MIPS_allocatable_dopetype: |
| 2841 | result = "MIPS_allocatable_dopetype"; |
| 2842 | break; |
| 2843 | |
| 2844 | case DW_AT_MIPS_assumed_shape_dopetype: |
| 2845 | result = "MIPS_assumed_shape_dopetype"; |
| 2846 | break; |
| 2847 | |
| 2848 | case DW_AT_MIPS_assumed_size: |
| 2849 | result = "MIPS_assumed_size"; |
| 2850 | break; |
| 2851 | |
| 2852 | case DW_AT_sf_names: |
| 2853 | result = "sf_names"; |
| 2854 | break; |
| 2855 | |
| 2856 | case DW_AT_src_info: |
| 2857 | result = "src_info"; |
| 2858 | break; |
| 2859 | |
| 2860 | case DW_AT_mac_info: |
| 2861 | result = "mac_info"; |
| 2862 | break; |
| 2863 | |
| 2864 | case DW_AT_src_coords: |
| 2865 | result = "src_coords"; |
| 2866 | break; |
| 2867 | |
| 2868 | case DW_AT_body_begin: |
| 2869 | result = "body_begin"; |
| 2870 | break; |
| 2871 | |
| 2872 | case DW_AT_body_end: |
| 2873 | result = "body_end"; |
| 2874 | break; |
| 2875 | |
| 2876 | default: |
| 2877 | if (attrnum < DW_AT_lo_user) |
| 2878 | snprintf (buf, sizeof buf, gettext ("unknown attribute %hx"), |
| 2879 | attrnum); |
| 2880 | else |
| 2881 | snprintf (buf, sizeof buf, gettext ("unknown user attribute %hx"), |
| 2882 | attrnum); |
| 2883 | result = buf; |
| 2884 | break; |
| 2885 | } |
| 2886 | |
| 2887 | return result; |
| 2888 | } |
| 2889 | |
| 2890 | |
| 2891 | static const char * |
| 2892 | dwarf_form_string (unsigned int form) |
| 2893 | { |
| 2894 | static const char *known_forms[] = |
| 2895 | { |
| 2896 | [DW_FORM_addr] = "addr", |
| 2897 | [DW_FORM_block2] = "block2", |
| 2898 | [DW_FORM_block4] = "block4", |
| 2899 | [DW_FORM_data2] = "data2", |
| 2900 | [DW_FORM_data4] = "data4", |
| 2901 | [DW_FORM_data8] = "data8", |
| 2902 | [DW_FORM_string] = "string", |
| 2903 | [DW_FORM_block] = "block", |
| 2904 | [DW_FORM_block1] = "block1", |
| 2905 | [DW_FORM_data1] = "data1", |
| 2906 | [DW_FORM_flag] = "flag", |
| 2907 | [DW_FORM_sdata] = "sdata", |
| 2908 | [DW_FORM_strp] = "strp", |
| 2909 | [DW_FORM_udata] = "udata", |
| 2910 | [DW_FORM_ref_addr] = "ref_addr", |
| 2911 | [DW_FORM_ref1] = "ref1", |
| 2912 | [DW_FORM_ref2] = "ref2", |
| 2913 | [DW_FORM_ref4] = "ref4", |
| 2914 | [DW_FORM_ref8] = "ref8", |
| 2915 | [DW_FORM_ref_udata] = "ref_udata", |
| 2916 | [DW_FORM_indirect] = "indirect" |
| 2917 | }; |
| 2918 | const unsigned int nknown_forms = (sizeof (known_forms) |
| 2919 | / sizeof (known_forms[0])); |
| 2920 | static char buf[40]; |
| 2921 | const char *result = NULL; |
| 2922 | |
| 2923 | if (form < nknown_forms) |
| 2924 | result = known_forms[form]; |
| 2925 | |
| 2926 | if (result == NULL) |
| 2927 | snprintf (buf, sizeof buf, gettext ("unknown form %" PRIx64), |
| 2928 | (uint64_t) form); |
| 2929 | |
| 2930 | return result; |
| 2931 | } |
| 2932 | |
| 2933 | |
| 2934 | static const char * |
| 2935 | dwarf_lang_string (unsigned int lang) |
| 2936 | { |
| 2937 | static const char *known[] = |
| 2938 | { |
| 2939 | [DW_LANG_C89] = "ISO C89", |
| 2940 | [DW_LANG_C] = "C", |
| 2941 | [DW_LANG_Ada83] = "Ada83", |
| 2942 | [DW_LANG_C_plus_plus ] = "C++", |
| 2943 | [DW_LANG_Cobol74] = "Cobol74", |
| 2944 | [DW_LANG_Cobol85] = "Cobol85", |
| 2945 | [DW_LANG_Fortran77] = "Fortran77", |
| 2946 | [DW_LANG_Fortran90] = "Fortran90", |
| 2947 | [DW_LANG_Pascal83] = "Pascal83", |
| 2948 | [DW_LANG_Modula2] = "Modula2", |
| 2949 | [DW_LANG_Java] = "Java", |
| 2950 | [DW_LANG_C99] = "ISO C99", |
| 2951 | [DW_LANG_Ada95] = "Ada95", |
| 2952 | [DW_LANG_Fortran95] = "Fortran95", |
| 2953 | [DW_LANG_PL1] = "PL1" |
| 2954 | }; |
| 2955 | |
| 2956 | if (lang < sizeof (known) / sizeof (known[0])) |
| 2957 | return known[lang]; |
| 2958 | else if (lang == DW_LANG_Mips_Assembler) |
| 2959 | /* This language tag is used for assembler in general. */ |
| 2960 | return "Assembler"; |
| 2961 | |
| 2962 | if (lang >= DW_LANG_lo_user && lang <= DW_LANG_hi_user) |
| 2963 | { |
| 2964 | static char buf[30]; |
| 2965 | snprintf (buf, sizeof (buf), "lo_user+%u", lang - DW_LANG_lo_user); |
| 2966 | return buf; |
| 2967 | } |
| 2968 | |
| 2969 | return "???"; |
| 2970 | } |
| 2971 | |
| 2972 | |
| 2973 | static const char * |
| 2974 | dwarf_inline_string (unsigned int code) |
| 2975 | { |
| 2976 | static const char *known[] = |
| 2977 | { |
| 2978 | [DW_INL_not_inlined] = "not_inlined", |
| 2979 | [DW_INL_inlined] = "inlined", |
| 2980 | [DW_INL_declared_not_inlined] = "declared_not_inlined", |
| 2981 | [DW_INL_declared_inlined] = "declared_inlined" |
| 2982 | }; |
| 2983 | |
| 2984 | if (code < sizeof (known) / sizeof (known[0])) |
| 2985 | return known[code]; |
| 2986 | |
| 2987 | return "???"; |
| 2988 | } |
| 2989 | |
| 2990 | |
| 2991 | static const char * |
| 2992 | dwarf_encoding_string (unsigned int code) |
| 2993 | { |
| 2994 | static const char *known[] = |
| 2995 | { |
| 2996 | [DW_ATE_void] = "void", |
| 2997 | [DW_ATE_address] = "address", |
| 2998 | [DW_ATE_boolean] = "boolean", |
| 2999 | [DW_ATE_complex_float] = "complex_float", |
| 3000 | [DW_ATE_float] = "float", |
| 3001 | [DW_ATE_signed] = "signed", |
| 3002 | [DW_ATE_signed_char] = "signed_char", |
| 3003 | [DW_ATE_unsigned] = "unsigned", |
| 3004 | [DW_ATE_unsigned_char] = "unsigned_char", |
| 3005 | [DW_ATE_imaginary_float] = "imaginary_float" |
| 3006 | }; |
| 3007 | |
| 3008 | if (code < sizeof (known) / sizeof (known[0])) |
| 3009 | return known[code]; |
| 3010 | |
| 3011 | if (code >= DW_ATE_lo_user && code <= DW_ATE_hi_user) |
| 3012 | { |
| 3013 | static char buf[30]; |
| 3014 | snprintf (buf, sizeof (buf), "lo_user+%u", code - DW_ATE_lo_user); |
| 3015 | return buf; |
| 3016 | } |
| 3017 | |
| 3018 | return "???"; |
| 3019 | } |
| 3020 | |
| 3021 | |
| 3022 | static const char * |
| 3023 | dwarf_access_string (unsigned int code) |
| 3024 | { |
| 3025 | static const char *known[] = |
| 3026 | { |
| 3027 | [DW_ACCESS_public] = "public", |
| 3028 | [DW_ACCESS_protected] = "protected", |
| 3029 | [DW_ACCESS_private] = "private" |
| 3030 | }; |
| 3031 | |
| 3032 | if (code < sizeof (known) / sizeof (known[0])) |
| 3033 | return known[code]; |
| 3034 | |
| 3035 | return "???"; |
| 3036 | } |
| 3037 | |
| 3038 | |
| 3039 | static const char * |
| 3040 | dwarf_visibility_string (unsigned int code) |
| 3041 | { |
| 3042 | static const char *known[] = |
| 3043 | { |
| 3044 | [DW_VIS_local] = "local", |
| 3045 | [DW_VIS_exported] = "exported", |
| 3046 | [DW_VIS_qualified] = "qualified" |
| 3047 | }; |
| 3048 | |
| 3049 | if (code < sizeof (known) / sizeof (known[0])) |
| 3050 | return known[code]; |
| 3051 | |
| 3052 | return "???"; |
| 3053 | } |
| 3054 | |
| 3055 | |
| 3056 | static const char * |
| 3057 | dwarf_virtuality_string (unsigned int code) |
| 3058 | { |
| 3059 | static const char *known[] = |
| 3060 | { |
| 3061 | [DW_VIRTUALITY_none] = "none", |
| 3062 | [DW_VIRTUALITY_virtual] = "virtual", |
| 3063 | [DW_VIRTUALITY_pure_virtual] = "pure_virtual" |
| 3064 | }; |
| 3065 | |
| 3066 | if (code < sizeof (known) / sizeof (known[0])) |
| 3067 | return known[code]; |
| 3068 | |
| 3069 | return "???"; |
| 3070 | } |
| 3071 | |
| 3072 | |
| 3073 | static const char * |
| 3074 | dwarf_identifier_case_string (unsigned int code) |
| 3075 | { |
| 3076 | static const char *known[] = |
| 3077 | { |
| 3078 | [DW_ID_case_sensitive] = "sensitive", |
| 3079 | [DW_ID_up_case] = "up_case", |
| 3080 | [DW_ID_down_case] = "down_case", |
| 3081 | [DW_ID_case_insensitive] = "insensitive" |
| 3082 | }; |
| 3083 | |
| 3084 | if (code < sizeof (known) / sizeof (known[0])) |
| 3085 | return known[code]; |
| 3086 | |
| 3087 | return "???"; |
| 3088 | } |
| 3089 | |
| 3090 | |
| 3091 | static const char * |
| 3092 | dwarf_calling_convention_string (unsigned int code) |
| 3093 | { |
| 3094 | static const char *known[] = |
| 3095 | { |
| 3096 | [DW_CC_normal] = "normal", |
| 3097 | [DW_CC_program] = "program", |
| 3098 | [DW_CC_nocall] = "nocall", |
| 3099 | }; |
| 3100 | |
| 3101 | if (code < sizeof (known) / sizeof (known[0])) |
| 3102 | return known[code]; |
| 3103 | |
| 3104 | if (code >= DW_CC_lo_user && code <= DW_CC_hi_user) |
| 3105 | { |
| 3106 | static char buf[30]; |
| 3107 | snprintf (buf, sizeof (buf), "lo_user+%u", code - DW_CC_lo_user); |
| 3108 | return buf; |
| 3109 | } |
| 3110 | |
| 3111 | return "???"; |
| 3112 | } |
| 3113 | |
| 3114 | |
| 3115 | static const char * |
| 3116 | dwarf_ordering_string (unsigned int code) |
| 3117 | { |
| 3118 | static const char *known[] = |
| 3119 | { |
| 3120 | [DW_ORD_row_major] = "row_major", |
| 3121 | [DW_ORD_col_major] = "col_major" |
| 3122 | }; |
| 3123 | |
| 3124 | if (code < sizeof (known) / sizeof (known[0])) |
| 3125 | return known[code]; |
| 3126 | |
| 3127 | return "???"; |
| 3128 | } |
| 3129 | |
| 3130 | |
| 3131 | static const char * |
| 3132 | dwarf_discr_list_string (unsigned int code) |
| 3133 | { |
| 3134 | static const char *known[] = |
| 3135 | { |
| 3136 | [DW_DSC_label] = "label", |
| 3137 | [DW_DSC_range] = "range" |
| 3138 | }; |
| 3139 | |
| 3140 | if (code < sizeof (known) / sizeof (known[0])) |
| 3141 | return known[code]; |
| 3142 | |
| 3143 | return "???"; |
| 3144 | } |
| 3145 | |
| 3146 | |
| 3147 | static void |
| 3148 | print_ops (Dwarf *dbg, int indent, int indentrest, |
| 3149 | unsigned int addrsize, Dwarf_Word len, const unsigned char *data) |
| 3150 | { |
| 3151 | static const char *known[] = |
| 3152 | { |
| 3153 | [DW_OP_addr] = "addr", |
| 3154 | [DW_OP_deref] = "deref", |
| 3155 | [DW_OP_const1u] = "const1u", |
| 3156 | [DW_OP_const1s] = "const1s", |
| 3157 | [DW_OP_const2u] = "const2u", |
| 3158 | [DW_OP_const2s] = "const2s", |
| 3159 | [DW_OP_const4u] = "const4u", |
| 3160 | [DW_OP_const4s] = "const4s", |
| 3161 | [DW_OP_const8u] = "const8u", |
| 3162 | [DW_OP_const8s] = "const8s", |
| 3163 | [DW_OP_constu] = "constu", |
| 3164 | [DW_OP_consts] = "consts", |
| 3165 | [DW_OP_dup] = "dup", |
| 3166 | [DW_OP_drop] = "drop", |
| 3167 | [DW_OP_over] = "over", |
| 3168 | [DW_OP_pick] = "pick", |
| 3169 | [DW_OP_swap] = "swap", |
| 3170 | [DW_OP_rot] = "rot", |
| 3171 | [DW_OP_xderef] = "xderef", |
| 3172 | [DW_OP_abs] = "abs", |
| 3173 | [DW_OP_and] = "and", |
| 3174 | [DW_OP_div] = "div", |
| 3175 | [DW_OP_minus] = "minus", |
| 3176 | [DW_OP_mod] = "mod", |
| 3177 | [DW_OP_mul] = "mul", |
| 3178 | [DW_OP_neg] = "neg", |
| 3179 | [DW_OP_not] = "not", |
| 3180 | [DW_OP_or] = "or", |
| 3181 | [DW_OP_plus] = "plus", |
| 3182 | [DW_OP_plus_uconst] = "plus_uconst", |
| 3183 | [DW_OP_shl] = "shl", |
| 3184 | [DW_OP_shr] = "shr", |
| 3185 | [DW_OP_shra] = "shra", |
| 3186 | [DW_OP_xor] = "xor", |
| 3187 | [DW_OP_bra] = "bra", |
| 3188 | [DW_OP_eq] = "eq", |
| 3189 | [DW_OP_ge] = "ge", |
| 3190 | [DW_OP_gt] = "gt", |
| 3191 | [DW_OP_le] = "le", |
| 3192 | [DW_OP_lt] = "lt", |
| 3193 | [DW_OP_ne] = "ne", |
| 3194 | [DW_OP_skip] = "skip", |
| 3195 | [DW_OP_lit0] = "lit0", |
| 3196 | [DW_OP_lit1] = "lit1", |
| 3197 | [DW_OP_lit2] = "lit2", |
| 3198 | [DW_OP_lit3] = "lit3", |
| 3199 | [DW_OP_lit4] = "lit4", |
| 3200 | [DW_OP_lit5] = "lit5", |
| 3201 | [DW_OP_lit6] = "lit6", |
| 3202 | [DW_OP_lit7] = "lit7", |
| 3203 | [DW_OP_lit8] = "lit8", |
| 3204 | [DW_OP_lit9] = "lit9", |
| 3205 | [DW_OP_lit10] = "lit10", |
| 3206 | [DW_OP_lit11] = "lit11", |
| 3207 | [DW_OP_lit12] = "lit12", |
| 3208 | [DW_OP_lit13] = "lit13", |
| 3209 | [DW_OP_lit14] = "lit14", |
| 3210 | [DW_OP_lit15] = "lit15", |
| 3211 | [DW_OP_lit16] = "lit16", |
| 3212 | [DW_OP_lit17] = "lit17", |
| 3213 | [DW_OP_lit18] = "lit18", |
| 3214 | [DW_OP_lit19] = "lit19", |
| 3215 | [DW_OP_lit20] = "lit20", |
| 3216 | [DW_OP_lit21] = "lit21", |
| 3217 | [DW_OP_lit22] = "lit22", |
| 3218 | [DW_OP_lit23] = "lit23", |
| 3219 | [DW_OP_lit24] = "lit24", |
| 3220 | [DW_OP_lit25] = "lit25", |
| 3221 | [DW_OP_lit26] = "lit26", |
| 3222 | [DW_OP_lit27] = "lit27", |
| 3223 | [DW_OP_lit28] = "lit28", |
| 3224 | [DW_OP_lit29] = "lit29", |
| 3225 | [DW_OP_lit30] = "lit30", |
| 3226 | [DW_OP_lit31] = "lit31", |
| 3227 | [DW_OP_reg0] = "reg0", |
| 3228 | [DW_OP_reg1] = "reg1", |
| 3229 | [DW_OP_reg2] = "reg2", |
| 3230 | [DW_OP_reg3] = "reg3", |
| 3231 | [DW_OP_reg4] = "reg4", |
| 3232 | [DW_OP_reg5] = "reg5", |
| 3233 | [DW_OP_reg6] = "reg6", |
| 3234 | [DW_OP_reg7] = "reg7", |
| 3235 | [DW_OP_reg8] = "reg8", |
| 3236 | [DW_OP_reg9] = "reg9", |
| 3237 | [DW_OP_reg10] = "reg10", |
| 3238 | [DW_OP_reg11] = "reg11", |
| 3239 | [DW_OP_reg12] = "reg12", |
| 3240 | [DW_OP_reg13] = "reg13", |
| 3241 | [DW_OP_reg14] = "reg14", |
| 3242 | [DW_OP_reg15] = "reg15", |
| 3243 | [DW_OP_reg16] = "reg16", |
| 3244 | [DW_OP_reg17] = "reg17", |
| 3245 | [DW_OP_reg18] = "reg18", |
| 3246 | [DW_OP_reg19] = "reg19", |
| 3247 | [DW_OP_reg20] = "reg20", |
| 3248 | [DW_OP_reg21] = "reg21", |
| 3249 | [DW_OP_reg22] = "reg22", |
| 3250 | [DW_OP_reg23] = "reg23", |
| 3251 | [DW_OP_reg24] = "reg24", |
| 3252 | [DW_OP_reg25] = "reg25", |
| 3253 | [DW_OP_reg26] = "reg26", |
| 3254 | [DW_OP_reg27] = "reg27", |
| 3255 | [DW_OP_reg28] = "reg28", |
| 3256 | [DW_OP_reg29] = "reg29", |
| 3257 | [DW_OP_reg30] = "reg30", |
| 3258 | [DW_OP_reg31] = "reg31", |
| 3259 | [DW_OP_breg0] = "breg0", |
| 3260 | [DW_OP_breg1] = "breg1", |
| 3261 | [DW_OP_breg2] = "breg2", |
| 3262 | [DW_OP_breg3] = "breg3", |
| 3263 | [DW_OP_breg4] = "breg4", |
| 3264 | [DW_OP_breg5] = "breg5", |
| 3265 | [DW_OP_breg6] = "breg6", |
| 3266 | [DW_OP_breg7] = "breg7", |
| 3267 | [DW_OP_breg8] = "breg8", |
| 3268 | [DW_OP_breg9] = "breg9", |
| 3269 | [DW_OP_breg10] = "breg10", |
| 3270 | [DW_OP_breg11] = "breg11", |
| 3271 | [DW_OP_breg12] = "breg12", |
| 3272 | [DW_OP_breg13] = "breg13", |
| 3273 | [DW_OP_breg14] = "breg14", |
| 3274 | [DW_OP_breg15] = "breg15", |
| 3275 | [DW_OP_breg16] = "breg16", |
| 3276 | [DW_OP_breg17] = "breg17", |
| 3277 | [DW_OP_breg18] = "breg18", |
| 3278 | [DW_OP_breg19] = "breg19", |
| 3279 | [DW_OP_breg20] = "breg20", |
| 3280 | [DW_OP_breg21] = "breg21", |
| 3281 | [DW_OP_breg22] = "breg22", |
| 3282 | [DW_OP_breg23] = "breg23", |
| 3283 | [DW_OP_breg24] = "breg24", |
| 3284 | [DW_OP_breg25] = "breg25", |
| 3285 | [DW_OP_breg26] = "breg26", |
| 3286 | [DW_OP_breg27] = "breg27", |
| 3287 | [DW_OP_breg28] = "breg28", |
| 3288 | [DW_OP_breg29] = "breg29", |
| 3289 | [DW_OP_breg30] = "breg30", |
| 3290 | [DW_OP_breg31] = "breg31", |
| 3291 | [DW_OP_regx] = "regx", |
| 3292 | [DW_OP_fbreg] = "fbreg", |
| 3293 | [DW_OP_bregx] = "bregx", |
| 3294 | [DW_OP_piece] = "piece", |
| 3295 | [DW_OP_deref_size] = "deref_size", |
| 3296 | [DW_OP_xderef_size] = "xderef_size", |
| 3297 | [DW_OP_nop] = "nop", |
| 3298 | [DW_OP_push_object_address] = "push_object_address", |
| 3299 | [DW_OP_call2] = "call2", |
| 3300 | [DW_OP_call4] = "call4", |
| 3301 | [DW_OP_call_ref] = "call_ref", |
| 3302 | }; |
| 3303 | |
| 3304 | Dwarf_Word offset = 0; |
| 3305 | while (len-- > 0) |
| 3306 | { |
| 3307 | size_t op = *data++; |
| 3308 | |
| 3309 | switch (op) |
| 3310 | { |
| 3311 | case DW_OP_call_ref: |
| 3312 | case DW_OP_addr:; |
| 3313 | /* Address operand. */ |
| 3314 | Dwarf_Word addr; |
| 3315 | if (addrsize == 4) |
| 3316 | addr = read_4ubyte_unaligned (dbg, data); |
| 3317 | else |
| 3318 | { |
| 3319 | assert (addrsize == 8); |
| 3320 | addr = read_8ubyte_unaligned (dbg, data); |
| 3321 | } |
| 3322 | data += addrsize; |
| 3323 | len -= addrsize; |
| 3324 | |
| 3325 | printf ("%*s[%4" PRIuMAX "] %s %" PRIuMAX "\n", |
| 3326 | indent, "", (uintmax_t) offset, |
| 3327 | known[op] ?: "???", (uintmax_t) addr); |
| 3328 | offset += 1 + addrsize; |
| 3329 | break; |
| 3330 | |
| 3331 | case DW_OP_deref_size: /* XXX Correct? */ |
| 3332 | case DW_OP_xderef_size: /* XXX Correct? */ |
| 3333 | case DW_OP_pick: |
| 3334 | case DW_OP_const1u: |
| 3335 | printf ("%*s[%4" PRIuMAX "] %s %" PRIu8 "\n", |
| 3336 | indent, "", (uintmax_t) offset, |
| 3337 | known[op] ?: "???", *((uint8_t *) data)); |
| 3338 | ++data; |
| 3339 | --len; |
| 3340 | offset += 2; |
| 3341 | break; |
| 3342 | |
| 3343 | case DW_OP_const2u: |
| 3344 | printf ("%*s[%4" PRIuMAX "] %s %" PRIu16 "\n", |
| 3345 | indent, "", (uintmax_t) offset, |
| 3346 | known[op] ?: "???", read_2ubyte_unaligned (dbg, data)); |
| 3347 | len -= 2; |
| 3348 | data += 2; |
| 3349 | offset += 3; |
| 3350 | break; |
| 3351 | |
| 3352 | case DW_OP_const4u: |
| 3353 | printf ("%*s[%4" PRIuMAX "] %s %" PRIu32 "\n", |
| 3354 | indent, "", (uintmax_t) offset, |
| 3355 | known[op] ?: "???", read_4ubyte_unaligned (dbg, data)); |
| 3356 | len -= 4; |
| 3357 | data += 4; |
| 3358 | offset += 5; |
| 3359 | break; |
| 3360 | |
| 3361 | case DW_OP_const8u: |
| 3362 | printf ("%*s[%4" PRIuMAX "] %s %" PRIu64 "\n", |
| 3363 | indent, "", (uintmax_t) offset, |
| 3364 | known[op] ?: "???", read_8ubyte_unaligned (dbg, data)); |
| 3365 | len -= 8; |
| 3366 | data += 8; |
| 3367 | offset += 9; |
| 3368 | break; |
| 3369 | |
| 3370 | case DW_OP_const1s: |
| 3371 | printf ("%*s[%4" PRIuMAX "] %s %" PRId8 "\n", |
| 3372 | indent, "", (uintmax_t) offset, |
| 3373 | known[op] ?: "???", *((int8_t *) data)); |
| 3374 | ++data; |
| 3375 | --len; |
| 3376 | offset += 2; |
| 3377 | break; |
| 3378 | |
| 3379 | case DW_OP_const2s: |
| 3380 | printf ("%*s[%4" PRIuMAX "] %s %" PRId16 "\n", |
| 3381 | indent, "", (uintmax_t) offset, |
| 3382 | known[op] ?: "???", read_2sbyte_unaligned (dbg, data)); |
| 3383 | len -= 2; |
| 3384 | data += 2; |
| 3385 | offset += 3; |
| 3386 | break; |
| 3387 | |
| 3388 | case DW_OP_const4s: |
| 3389 | printf ("%*s[%4" PRIuMAX "] %s %" PRId32 "\n", |
| 3390 | indent, "", (uintmax_t) offset, |
| 3391 | known[op] ?: "???", read_4sbyte_unaligned (dbg, data)); |
| 3392 | len -= 4; |
| 3393 | data += 4; |
| 3394 | offset += 5; |
| 3395 | break; |
| 3396 | |
| 3397 | case DW_OP_const8s: |
| 3398 | printf ("%*s[%4" PRIuMAX "] %s %" PRId64 "\n", |
| 3399 | indent, "", (uintmax_t) offset, |
| 3400 | known[op] ?: "???", read_8sbyte_unaligned (dbg, data)); |
| 3401 | len -= 8; |
| 3402 | data += 8; |
| 3403 | offset += 9; |
| 3404 | break; |
| 3405 | |
| 3406 | case DW_OP_piece: /* XXX Correct? */ |
| 3407 | case DW_OP_regx: |
| 3408 | case DW_OP_plus_uconst: |
| 3409 | case DW_OP_constu:; |
| 3410 | const unsigned char *start = data; |
| 3411 | unsigned int uleb; |
| 3412 | get_uleb128 (uleb, data); |
| 3413 | printf ("%*s[%4" PRIuMAX "] %s %u\n", |
| 3414 | indent, "", (uintmax_t) offset, |
| 3415 | known[op] ?: "???", uleb); |
| 3416 | len -= data - start; |
| 3417 | offset += 1 + (data - start); |
| 3418 | break; |
| 3419 | |
| 3420 | case DW_OP_fbreg: |
| 3421 | case DW_OP_breg0 ... DW_OP_breg31: |
| 3422 | case DW_OP_consts: |
| 3423 | start = data; |
| 3424 | unsigned int sleb; |
| 3425 | get_sleb128 (sleb, data); |
| 3426 | printf ("%*s[%4" PRIuMAX "] %s %d\n", |
| 3427 | indent, "", (uintmax_t) offset, |
| 3428 | known[op] ?: "???", sleb); |
| 3429 | len -= data - start; |
| 3430 | offset += 1 + (data - start); |
| 3431 | break; |
| 3432 | |
| 3433 | case DW_OP_bregx: |
| 3434 | start = data; |
| 3435 | get_uleb128 (uleb, data); |
| 3436 | get_sleb128 (sleb, data); |
| 3437 | printf ("%*s[%4" PRIuMAX "] %s %u %d\n", |
| 3438 | indent, "", (uintmax_t) offset, |
| 3439 | known[op] ?: "???", uleb, sleb); |
| 3440 | len -= data - start; |
| 3441 | offset += 1 + (data - start); |
| 3442 | break; |
| 3443 | |
| 3444 | case DW_OP_call2: |
| 3445 | case DW_OP_call4: |
| 3446 | case DW_OP_skip: |
| 3447 | case DW_OP_bra: |
| 3448 | printf ("%*s[%4" PRIuMAX "] %s %" PRIuMAX "\n", |
| 3449 | indent, "", (uintmax_t) offset, |
| 3450 | known[op] ?: "???", |
| 3451 | (uintmax_t) (offset + read_2sbyte_unaligned (dbg, data))); |
| 3452 | len -= 2; |
| 3453 | data += 2; |
| 3454 | offset += 3; |
| 3455 | break; |
| 3456 | |
| 3457 | default: |
| 3458 | /* No Operand. */ |
| 3459 | printf ("%*s[%4" PRIuMAX "] %s\n", |
| 3460 | indent, "", (uintmax_t) offset, |
| 3461 | known[op] ?: "???"); |
| 3462 | ++offset; |
| 3463 | break; |
| 3464 | } |
| 3465 | |
| 3466 | indent = indentrest; |
| 3467 | } |
| 3468 | } |
| 3469 | |
| 3470 | |
| 3471 | static void |
| 3472 | print_debug_abbrev_section (Ebl *ebl __attribute__ ((unused)), |
| 3473 | GElf_Ehdr *ehdr __attribute__ ((unused)), |
| 3474 | Elf_Scn *scn __attribute__ ((unused)), |
| 3475 | GElf_Shdr *shdr, Dwarf *dbg) |
| 3476 | { |
| 3477 | printf (gettext ("\nDWARF section '%s' at offset %#" PRIx64 ":\n" |
| 3478 | " [ Code]\n"), |
| 3479 | ".debug_abbrev", (uint64_t) shdr->sh_offset); |
| 3480 | |
| 3481 | Dwarf_Off offset = 0; |
| 3482 | while (offset < shdr->sh_size) |
| 3483 | { |
| 3484 | printf (gettext ("\nAbbreviation section at offset %" PRIu64 ":\n"), |
| 3485 | offset); |
| 3486 | |
| 3487 | while (1) |
| 3488 | { |
| 3489 | size_t length; |
| 3490 | Dwarf_Abbrev abbrev; |
| 3491 | |
| 3492 | int res = dwarf_offabbrev (dbg, offset, &length, &abbrev); |
| 3493 | if (res != 0) |
| 3494 | { |
| 3495 | if (res < 0) |
| 3496 | { |
| 3497 | printf (gettext ("\ |
| 3498 | *** error while reading abbreviation: %s\n"), |
| 3499 | dwarf_errmsg (-1)); |
| 3500 | return; |
| 3501 | } |
| 3502 | |
| 3503 | /* This is the NUL byte at the end of the section. */ |
| 3504 | ++offset; |
| 3505 | break; |
| 3506 | } |
| 3507 | |
| 3508 | /* We know these calls can never fail. */ |
| 3509 | unsigned int code = dwarf_getabbrevcode (&abbrev); |
| 3510 | unsigned int tag = dwarf_getabbrevtag (&abbrev); |
| 3511 | int has_children = dwarf_abbrevhaschildren (&abbrev); |
| 3512 | |
| 3513 | printf (gettext (" [%5u] offset: %" PRId64 |
| 3514 | ", children: %s, tag: %s\n"), |
| 3515 | code, (int64_t) offset, |
| 3516 | has_children ? gettext ("yes") : gettext ("no"), |
| 3517 | dwarf_tag_string (tag)); |
| 3518 | |
| 3519 | size_t cnt = 0; |
| 3520 | unsigned int name; |
| 3521 | unsigned int form; |
| 3522 | Dwarf_Off enoffset; |
| 3523 | while (dwarf_getabbrevattr (&abbrev, cnt, |
| 3524 | &name, &form, &enoffset) == 0) |
| 3525 | { |
| 3526 | printf (" attr: %s, form: %s, offset: %#" PRIx64 "\n", |
| 3527 | dwarf_attr_string (name), dwarf_form_string (form), |
| 3528 | (uint64_t) enoffset); |
| 3529 | |
| 3530 | ++cnt; |
| 3531 | } |
| 3532 | |
| 3533 | offset += length; |
| 3534 | } |
| 3535 | } |
| 3536 | } |
| 3537 | |
| 3538 | |
| 3539 | /* Print content of DWARF .debug_aranges section. We fortunately do |
| 3540 | not have to know a bit about the structure of the section, libdwarf |
| 3541 | takes care of it. */ |
| 3542 | static void |
| 3543 | print_debug_aranges_section (Ebl *ebl __attribute__ ((unused)), |
| 3544 | GElf_Ehdr *ehdr __attribute__ ((unused)), |
| 3545 | Elf_Scn *scn __attribute__ ((unused)), |
| 3546 | GElf_Shdr *shdr, Dwarf *dbg) |
| 3547 | { |
| 3548 | Dwarf_Aranges *aranges; |
| 3549 | size_t cnt; |
| 3550 | if (dwarf_getaranges (dbg, &aranges, &cnt) != 0) |
| 3551 | { |
| 3552 | error (0, 0, gettext ("cannot get .debug_aranges content: %s"), |
| 3553 | dwarf_errmsg (-1)); |
| 3554 | return; |
| 3555 | } |
| 3556 | |
| 3557 | printf (ngettext ("\ |
| 3558 | \nDWARF section '%s' at offset %#" PRIx64 " contains %zu entry:\n", |
| 3559 | "\ |
| 3560 | \nDWARF section '%s' at offset %#" PRIx64 " contains %zu entries:\n", |
| 3561 | cnt), |
| 3562 | ".debug_aranges", (uint64_t) shdr->sh_offset, cnt); |
| 3563 | |
| 3564 | /* Compute floor(log16(cnt)). */ |
| 3565 | size_t tmp = cnt; |
| 3566 | int digits = 1; |
| 3567 | while (tmp >= 16) |
| 3568 | { |
| 3569 | ++digits; |
| 3570 | tmp >>= 4; |
| 3571 | } |
| 3572 | |
| 3573 | for (size_t n = 0; n < cnt; ++n) |
| 3574 | { |
| 3575 | Dwarf_Arange *runp = dwarf_onearange (aranges, n); |
| 3576 | if (runp == NULL) |
| 3577 | { |
| 3578 | printf ("cannot get arange %zu: %s\n", n, dwarf_errmsg (-1)); |
| 3579 | return; |
| 3580 | } |
| 3581 | |
| 3582 | Dwarf_Addr start; |
| 3583 | Dwarf_Word length; |
| 3584 | Dwarf_Off offset; |
| 3585 | |
| 3586 | if (dwarf_getarangeinfo (runp, &start, &length, &offset) != 0) |
| 3587 | printf (gettext (" [%*zu] ???\n"), digits, n); |
| 3588 | else |
| 3589 | printf (gettext (" [%*zu] start: %0#*" PRIx64 |
| 3590 | ", length: %5" PRIu64 ", CU DIE offset: %6" |
| 3591 | PRId64 "\n"), |
| 3592 | digits, n, ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 10 : 18, |
| 3593 | (uint64_t) start, (uint64_t) length, (int64_t) offset); |
| 3594 | } |
| 3595 | } |
| 3596 | |
| 3597 | /* Print content of DWARF .debug_ranges section. */ |
| 3598 | static void |
| 3599 | print_debug_ranges_section (Ebl *ebl __attribute__ ((unused)), |
| 3600 | GElf_Ehdr *ehdr, Elf_Scn *scn, GElf_Shdr *shdr, |
| 3601 | Dwarf *dbg) |
| 3602 | { |
| 3603 | Elf_Data *data = elf_rawdata (scn, NULL); |
| 3604 | |
| 3605 | if (data == NULL) |
| 3606 | { |
| 3607 | error (0, 0, gettext ("cannot get .debug_ranges content: %s"), |
| 3608 | elf_errmsg (-1)); |
| 3609 | return; |
| 3610 | } |
| 3611 | |
| 3612 | printf (gettext ("\ |
| 3613 | \nDWARF section '%s' at offset %#" PRIx64 ":\n"), |
| 3614 | ".debug_ranges", (uint64_t) shdr->sh_offset); |
| 3615 | |
| 3616 | size_t address_size = ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8; |
| 3617 | |
| 3618 | bool first = true; |
| 3619 | unsigned char *readp = data->d_buf; |
| 3620 | while (readp < (unsigned char *) data->d_buf + data->d_size) |
| 3621 | { |
| 3622 | ptrdiff_t offset = readp - (unsigned char *) data->d_buf; |
| 3623 | |
| 3624 | if (data->d_size - offset < address_size * 2) |
| 3625 | { |
| 3626 | printf (" [%6tx] <INVALID DATA>\n", offset); |
| 3627 | break; |
| 3628 | } |
| 3629 | |
| 3630 | Dwarf_Addr begin; |
| 3631 | Dwarf_Addr end; |
| 3632 | if (address_size == 8) |
| 3633 | { |
| 3634 | begin = read_8ubyte_unaligned_inc (dbg, readp); |
| 3635 | end = read_8ubyte_unaligned_inc (dbg, readp); |
| 3636 | } |
| 3637 | else |
| 3638 | { |
| 3639 | begin = read_4ubyte_unaligned_inc (dbg, readp); |
| 3640 | end = read_4ubyte_unaligned_inc (dbg, readp); |
| 3641 | if (begin == (Dwarf_Addr) (uint32_t) -1) |
| 3642 | begin = (Dwarf_Addr) -1l; |
| 3643 | } |
| 3644 | |
| 3645 | if (begin == (Dwarf_Addr) -1l) /* Base address entry. */ |
| 3646 | printf (" [%6tx] base address %#0*" PRIxMAX "\n", offset, |
| 3647 | 2 + (int) (address_size * 2), (uintmax_t) end); |
| 3648 | else if (begin == 0 && end == 0) /* End of list entry. */ |
| 3649 | first = true; |
| 3650 | else |
| 3651 | { |
| 3652 | /* We have an address range entry. */ |
| 3653 | if (first) /* First address range entry in a list. */ |
| 3654 | printf (" [%6tx] %#0*" PRIxMAX "..%#0*" PRIxMAX "\n", offset, |
| 3655 | 2 + (int) (address_size * 2), (uintmax_t) begin, |
| 3656 | 2 + (int) (address_size * 2), (uintmax_t) end); |
| 3657 | else |
| 3658 | printf (" %#0*" PRIxMAX "..%#0*" PRIxMAX "\n", |
| 3659 | 2 + (int) (address_size * 2), (uintmax_t) begin, |
| 3660 | 2 + (int) (address_size * 2), (uintmax_t) end); |
| 3661 | |
| 3662 | first = false; |
| 3663 | } |
| 3664 | } |
| 3665 | } |
| 3666 | |
| 3667 | |
| 3668 | static void |
| 3669 | print_debug_frame_section (Ebl *ebl __attribute__ ((unused)), |
| 3670 | GElf_Ehdr *ehdr __attribute__ ((unused)), |
| 3671 | Elf_Scn *scn __attribute__ ((unused)), |
| 3672 | GElf_Shdr *shdr __attribute__ ((unused)), |
| 3673 | Dwarf *dbg __attribute__ ((unused))) |
| 3674 | { |
| 3675 | } |
| 3676 | |
| 3677 | |
| 3678 | struct attrcb_args |
| 3679 | { |
| 3680 | Dwarf *dbg; |
| 3681 | int level; |
| 3682 | unsigned int addrsize; |
| 3683 | Dwarf_Off cu_offset; |
| 3684 | }; |
| 3685 | |
| 3686 | |
| 3687 | static int |
| 3688 | attr_callback (Dwarf_Attribute *attrp, void *arg) |
| 3689 | { |
| 3690 | struct attrcb_args *cbargs = (struct attrcb_args *) arg; |
| 3691 | const int level = cbargs->level; |
| 3692 | |
| 3693 | unsigned int attr = dwarf_whatattr (attrp); |
| 3694 | if (unlikely (attr == 0)) |
| 3695 | { |
| 3696 | error (0, 0, gettext ("cannot get attribute code: %s"), |
| 3697 | dwarf_errmsg (-1)); |
| 3698 | return DWARF_CB_ABORT; |
| 3699 | } |
| 3700 | |
| 3701 | unsigned int form = dwarf_whatform (attrp); |
| 3702 | if (unlikely (form == 0)) |
| 3703 | { |
| 3704 | error (0, 0, gettext ("cannot get attribute form: %s"), |
| 3705 | dwarf_errmsg (-1)); |
| 3706 | return DWARF_CB_ABORT; |
| 3707 | } |
| 3708 | |
| 3709 | switch (form) |
| 3710 | { |
| 3711 | case DW_FORM_addr:; |
| 3712 | Dwarf_Addr addr; |
| 3713 | if (unlikely (dwarf_formaddr (attrp, &addr) != 0)) |
| 3714 | { |
| 3715 | attrval_out: |
| 3716 | error (0, 0, gettext ("cannot get attribute value: %s"), |
| 3717 | dwarf_errmsg (-1)); |
| 3718 | return DWARF_CB_ABORT; |
| 3719 | } |
| 3720 | printf (" %*s%-20s %#0*" PRIxMAX "\n", |
| 3721 | (int) (level * 2), "", dwarf_attr_string (attr), |
| 3722 | 2 + (int) (cbargs->addrsize * 2), (uintmax_t) addr); |
| 3723 | break; |
| 3724 | |
| 3725 | case DW_FORM_indirect: |
| 3726 | case DW_FORM_strp: |
| 3727 | case DW_FORM_string:; |
| 3728 | const char *str = dwarf_formstring (attrp); |
| 3729 | if (unlikely (str == NULL)) |
| 3730 | goto attrval_out; |
| 3731 | printf (" %*s%-20s \"%s\"\n", |
| 3732 | (int) (level * 2), "", dwarf_attr_string (attr), str); |
| 3733 | break; |
| 3734 | |
| 3735 | case DW_FORM_ref_addr: |
| 3736 | case DW_FORM_ref_udata: |
| 3737 | case DW_FORM_ref8: |
| 3738 | case DW_FORM_ref4: |
| 3739 | case DW_FORM_ref2: |
| 3740 | case DW_FORM_ref1:; |
| 3741 | Dwarf_Off ref; |
| 3742 | if (unlikely (dwarf_formref (attrp, &ref) != 0)) |
| 3743 | goto attrval_out; |
| 3744 | |
| 3745 | printf (" %*s%-20s [%6" PRIxMAX "]\n", |
| 3746 | (int) (level * 2), "", dwarf_attr_string (attr), |
| 3747 | (uintmax_t) (ref + cbargs->cu_offset)); |
| 3748 | break; |
| 3749 | |
| 3750 | case DW_FORM_udata: |
| 3751 | case DW_FORM_sdata: |
| 3752 | case DW_FORM_data8: |
| 3753 | case DW_FORM_data4: |
| 3754 | case DW_FORM_data2: |
| 3755 | case DW_FORM_data1:; |
| 3756 | Dwarf_Word num; |
| 3757 | if (unlikely (dwarf_formudata (attrp, &num) != 0)) |
| 3758 | goto attrval_out; |
| 3759 | |
| 3760 | const char *valuestr = NULL; |
| 3761 | switch (attr) |
| 3762 | { |
| 3763 | case DW_AT_location: |
| 3764 | case DW_AT_data_member_location: |
| 3765 | case DW_AT_vtable_elem_location: |
| 3766 | case DW_AT_string_length: |
| 3767 | case DW_AT_use_location: |
| 3768 | case DW_AT_frame_base: |
| 3769 | case DW_AT_return_addr: |
| 3770 | case DW_AT_static_link: |
| 3771 | printf (" %*s%-20s location list [%6" PRIxMAX "]\n", |
| 3772 | (int) (level * 2), "", dwarf_attr_string (attr), |
| 3773 | (uintmax_t) num); |
| 3774 | return DWARF_CB_OK; |
| 3775 | |
| 3776 | case DW_AT_ranges: |
| 3777 | printf (" %*s%-20s range list [%6" PRIxMAX "]\n", |
| 3778 | (int) (level * 2), "", dwarf_attr_string (attr), |
| 3779 | (uintmax_t) num); |
| 3780 | return DWARF_CB_OK; |
| 3781 | |
| 3782 | case DW_AT_language: |
| 3783 | valuestr = dwarf_lang_string (num); |
| 3784 | break; |
| 3785 | case DW_AT_encoding: |
| 3786 | valuestr = dwarf_encoding_string (num); |
| 3787 | break; |
| 3788 | case DW_AT_accessibility: |
| 3789 | valuestr = dwarf_access_string (num); |
| 3790 | break; |
| 3791 | case DW_AT_visibility: |
| 3792 | valuestr = dwarf_visibility_string (num); |
| 3793 | break; |
| 3794 | case DW_AT_virtuality: |
| 3795 | valuestr = dwarf_virtuality_string (num); |
| 3796 | break; |
| 3797 | case DW_AT_identifier_case: |
| 3798 | valuestr = dwarf_identifier_case_string (num); |
| 3799 | break; |
| 3800 | case DW_AT_calling_convention: |
| 3801 | valuestr = dwarf_calling_convention_string (num); |
| 3802 | break; |
| 3803 | case DW_AT_inline: |
| 3804 | valuestr = dwarf_inline_string (num); |
| 3805 | break; |
| 3806 | case DW_AT_ordering: |
| 3807 | valuestr = dwarf_ordering_string (num); |
| 3808 | break; |
| 3809 | case DW_AT_discr_list: |
| 3810 | valuestr = dwarf_discr_list_string (num); |
| 3811 | break; |
| 3812 | default: |
| 3813 | /* Nothing. */ |
| 3814 | break; |
| 3815 | } |
| 3816 | |
| 3817 | if (valuestr == NULL) |
| 3818 | printf (" %*s%-20s %" PRIuMAX "\n", |
| 3819 | (int) (level * 2), "", dwarf_attr_string (attr), |
| 3820 | (uintmax_t) num); |
| 3821 | else |
| 3822 | printf (" %*s%-20s %s (%" PRIuMAX ")\n", |
| 3823 | (int) (level * 2), "", dwarf_attr_string (attr), |
| 3824 | valuestr, (uintmax_t) num); |
| 3825 | break; |
| 3826 | |
| 3827 | case DW_FORM_flag:; |
| 3828 | bool flag; |
| 3829 | if (unlikely (dwarf_formflag (attrp, &flag) != 0)) |
| 3830 | goto attrval_out; |
| 3831 | |
| 3832 | printf (" %*s%-20s %s\n", |
| 3833 | (int) (level * 2), "", dwarf_attr_string (attr), |
| 3834 | nl_langinfo (flag ? YESSTR : NOSTR)); |
| 3835 | break; |
| 3836 | |
| 3837 | case DW_FORM_block4: |
| 3838 | case DW_FORM_block2: |
| 3839 | case DW_FORM_block1: |
| 3840 | case DW_FORM_block:; |
| 3841 | Dwarf_Block block; |
| 3842 | if (unlikely (dwarf_formblock (attrp, &block) != 0)) |
| 3843 | goto attrval_out; |
| 3844 | |
| 3845 | printf (" %*s%-20s %" PRIxMAX " byte block\n", |
| 3846 | (int) (level * 2), "", dwarf_attr_string (attr), |
| 3847 | (uintmax_t) block.length); |
| 3848 | |
| 3849 | switch (attr) |
| 3850 | { |
| 3851 | case DW_AT_location: |
| 3852 | case DW_AT_data_member_location: |
| 3853 | case DW_AT_vtable_elem_location: |
| 3854 | case DW_AT_string_length: |
| 3855 | case DW_AT_use_location: |
| 3856 | case DW_AT_frame_base: |
| 3857 | case DW_AT_return_addr: |
| 3858 | case DW_AT_static_link: |
| 3859 | print_ops (cbargs->dbg, 12 + level * 2, 12 + level * 2, |
| 3860 | cbargs->addrsize, block.length, block.data); |
| 3861 | break; |
| 3862 | } |
| 3863 | break; |
| 3864 | |
| 3865 | default: |
| 3866 | printf (" %*s%-20s [form: %d] ???\n", |
| 3867 | (int) (level * 2), "", dwarf_attr_string (attr), |
| 3868 | (int) form); |
| 3869 | break; |
| 3870 | } |
| 3871 | |
| 3872 | return DWARF_CB_OK; |
| 3873 | } |
| 3874 | |
| 3875 | |
| 3876 | static void |
| 3877 | print_debug_info_section (Ebl *ebl __attribute__ ((unused)), |
| 3878 | GElf_Ehdr *ehdr __attribute__ ((unused)), |
| 3879 | Elf_Scn *scn __attribute__ ((unused)), |
| 3880 | GElf_Shdr *shdr, Dwarf *dbg) |
| 3881 | { |
| 3882 | printf (gettext ("\ |
| 3883 | \nDWARF section '%s' at offset %#" PRIx64 ":\n [Offset]\n"), |
| 3884 | ".debug_info", (uint64_t) shdr->sh_offset); |
| 3885 | |
| 3886 | /* If the section is empty we don't have to do anything. */ |
| 3887 | if (shdr->sh_size == 0) |
| 3888 | return; |
| 3889 | |
| 3890 | int maxdies = 20; |
| 3891 | Dwarf_Die *dies = (Dwarf_Die *) xmalloc (maxdies * sizeof (Dwarf_Die)); |
| 3892 | |
| 3893 | Dwarf_Off offset = 0; |
| 3894 | |
| 3895 | /* New compilation unit. */ |
| 3896 | size_t cuhl; |
| 3897 | //Dwarf_Half version; |
| 3898 | Dwarf_Off abbroffset; |
| 3899 | uint8_t addrsize; |
| 3900 | uint8_t offsize; |
| 3901 | Dwarf_Off nextcu; |
| 3902 | next_cu: |
| 3903 | if (dwarf_nextcu (dbg, offset, &nextcu, &cuhl, &abbroffset, &addrsize, |
| 3904 | &offsize) != 0) |
| 3905 | goto do_return; |
| 3906 | |
| 3907 | printf (gettext (" Compilation unit at offset %" PRIu64 ":\n" |
| 3908 | " Version: %" PRIu16 ", Abbreviation section offset: %" |
| 3909 | PRIu64 ", Address size: %" PRIu8 ", Offset size: %" PRIu8 "\n"), |
| 3910 | (uint64_t) offset, /*version*/2, abbroffset, addrsize, offsize); |
| 3911 | |
| 3912 | |
| 3913 | struct attrcb_args args; |
| 3914 | args.dbg = dbg; |
| 3915 | args.addrsize = addrsize; |
| 3916 | args.cu_offset = offset; |
| 3917 | |
| 3918 | offset += cuhl; |
| 3919 | |
| 3920 | int level = 0; |
| 3921 | |
| 3922 | if (unlikely (dwarf_offdie (dbg, offset, &dies[level]) == NULL)) |
| 3923 | { |
| 3924 | error (0, 0, gettext ("cannot get DIE at offset %" PRIu64 |
| 3925 | " in section '%s': %s"), |
| 3926 | (uint64_t) offset, ".debug_info", dwarf_errmsg (-1)); |
| 3927 | goto do_return; |
| 3928 | } |
| 3929 | |
| 3930 | do |
| 3931 | { |
| 3932 | offset = dwarf_dieoffset (&dies[level]); |
| 3933 | if (offset == ~0ul) |
| 3934 | { |
| 3935 | error (0, 0, gettext ("cannot get DIE offset: %s"), |
| 3936 | dwarf_errmsg (-1)); |
| 3937 | goto do_return; |
| 3938 | } |
| 3939 | |
| 3940 | int tag = dwarf_tag (&dies[level]); |
| 3941 | if (tag == DW_TAG_invalid) |
| 3942 | { |
| 3943 | error (0, 0, gettext ("cannot get tag of DIE at offset %" PRIu64 |
| 3944 | " in section '%s': %s"), |
| 3945 | (uint64_t) offset, ".debug_info", dwarf_errmsg (-1)); |
| 3946 | goto do_return; |
| 3947 | } |
| 3948 | |
| 3949 | #if 1 |
| 3950 | const char *tagstr = dwarf_tag_string (tag); |
| 3951 | #else |
| 3952 | static const char *const lowtags[] = |
| 3953 | { |
| 3954 | [DW_TAG_array_type] = "array_type", |
| 3955 | [DW_TAG_class_type] = "class_type", |
| 3956 | [DW_TAG_entry_point] = "entry_point", |
| 3957 | [DW_TAG_enumeration_type] = "enumeration_type", |
| 3958 | [DW_TAG_formal_parameter] = "formal_parameter", |
| 3959 | [DW_TAG_imported_declaration] = "imported_declaration", |
| 3960 | [DW_TAG_label] = "label", |
| 3961 | [DW_TAG_lexical_block] = "lexical_block", |
| 3962 | [DW_TAG_member] = "member", |
| 3963 | [DW_TAG_pointer_type] = "pointer_type", |
| 3964 | [DW_TAG_reference_type] = "reference_type", |
| 3965 | [DW_TAG_compile_unit] = "compile_unit", |
| 3966 | [DW_TAG_string_type] = "string_type", |
| 3967 | [DW_TAG_structure_type] = "structure_type", |
| 3968 | [DW_TAG_subroutine_type] = "subroutine_type", |
| 3969 | [DW_TAG_typedef] = "typedef", |
| 3970 | [DW_TAG_union_type] = "union_type", |
| 3971 | [DW_TAG_unspecified_parameters] = "unspecified_parameters", |
| 3972 | [DW_TAG_variant] = "variant", |
| 3973 | [DW_TAG_common_block] = "common_block", |
| 3974 | [DW_TAG_common_inclusion] = "common_inclusion", |
| 3975 | [DW_TAG_inheritance] = "inheritance", |
| 3976 | [DW_TAG_inlined_subroutine] = "inlined_subroutine", |
| 3977 | [DW_TAG_module] = "module", |
| 3978 | [DW_TAG_ptr_to_member_type] = "ptr_to_member_type", |
| 3979 | [DW_TAG_set_type] = "set_type", |
| 3980 | [DW_TAG_subrange_type] = "subrange_type", |
| 3981 | [DW_TAG_with_stmt] = "with_stmt", |
| 3982 | [DW_TAG_access_declaration] = "access_declaration", |
| 3983 | [DW_TAG_base_type] = "base_type", |
| 3984 | [DW_TAG_catch_block] = "catch_block", |
| 3985 | [DW_TAG_const_type] = "const_type", |
| 3986 | [DW_TAG_constant] = "constant", |
| 3987 | [DW_TAG_enumerator] = "enumerator", |
| 3988 | [DW_TAG_file_type] = "file_type", |
| 3989 | [DW_TAG_friend] = "friend", |
| 3990 | [DW_TAG_namelist] = "namelist", |
| 3991 | [DW_TAG_namelist_item] = "namelist_item", |
| 3992 | [DW_TAG_packed_type] = "packed_type", |
| 3993 | [DW_TAG_subprogram] = "subprogram", |
| 3994 | [DW_TAG_template_type_param] = "template_type_param", |
| 3995 | [DW_TAG_template_value_param] = "template_value_param", |
| 3996 | [DW_TAG_thrown_type] = "thrown_type", |
| 3997 | [DW_TAG_try_block] = "try_block", |
| 3998 | [DW_TAG_variant_part] = "variant_part", |
| 3999 | [DW_TAG_variable] = "variable", |
| 4000 | [DW_TAG_volatile_type] = "volatile_type" |
| 4001 | }; |
| 4002 | |
| 4003 | const char *tagstr; |
| 4004 | switch (tag) |
| 4005 | { |
| 4006 | case DW_TAG_lo_user: |
| 4007 | tagstr = "lo_user"; |
| 4008 | break; |
| 4009 | |
| 4010 | case DW_TAG_MIPS_loop: |
| 4011 | tagstr = "MIPS_loop"; |
| 4012 | break; |
| 4013 | |
| 4014 | case DW_TAG_format_label: |
| 4015 | tagstr = "format_label"; |
| 4016 | break; |
| 4017 | |
| 4018 | case DW_TAG_function_template: |
| 4019 | tagstr = "function_template"; |
| 4020 | break; |
| 4021 | |
| 4022 | case DW_TAG_class_template: |
| 4023 | tagstr = "class_template"; |
| 4024 | break; |
| 4025 | case DW_TAG_hi_user: |
| 4026 | tagstr = "hi_user"; |
| 4027 | break; |
| 4028 | |
| 4029 | default: |
| 4030 | if (tag < (int) (sizeof (lowtags) / sizeof (lowtags[0]))) |
| 4031 | tagstr = lowtags[tag]; |
| 4032 | else |
| 4033 | tagstr = "???"; |
| 4034 | break; |
| 4035 | } |
| 4036 | #endif |
| 4037 | |
| 4038 | printf (" [%6" PRIx64 "] %*s%s\n", |
| 4039 | (uint64_t) offset, (int) (level * 2), "", tagstr); |
| 4040 | |
| 4041 | /* Print the attribute values. */ |
| 4042 | args.level = level; |
| 4043 | (void) dwarf_getattrs (&dies[level], attr_callback, &args, 0); |
| 4044 | |
| 4045 | /* Make room for the next level's DIE. */ |
| 4046 | if (level + 1 == maxdies) |
| 4047 | dies = (Dwarf_Die *) xrealloc (dies, |
| 4048 | (maxdies += 10) |
| 4049 | * sizeof (Dwarf_Die)); |
| 4050 | |
| 4051 | int res = dwarf_child (&dies[level], &dies[level + 1]); |
| 4052 | if (res > 0) |
| 4053 | { |
| 4054 | while ((res = dwarf_siblingof (&dies[level], &dies[level])) == 1) |
| 4055 | if (level-- == 0) |
| 4056 | break; |
| 4057 | |
| 4058 | if (res == -1) |
| 4059 | { |
| 4060 | error (0, 0, gettext ("cannot get next DIE: %s\n"), |
| 4061 | dwarf_errmsg (-1)); |
| 4062 | goto do_return; |
| 4063 | } |
| 4064 | } |
| 4065 | else if (unlikely (res < 0)) |
| 4066 | { |
| 4067 | error (0, 0, gettext ("cannot get next DIE: %s"), |
| 4068 | dwarf_errmsg (-1)); |
| 4069 | goto do_return; |
| 4070 | } |
| 4071 | else |
| 4072 | ++level; |
| 4073 | } |
| 4074 | while (level >= 0); |
| 4075 | |
| 4076 | offset = nextcu; |
| 4077 | if (offset != 0) |
| 4078 | goto next_cu; |
| 4079 | |
| 4080 | do_return: |
| 4081 | free (dies); |
| 4082 | } |
| 4083 | |
| 4084 | |
| 4085 | static void |
| 4086 | print_debug_line_section (Ebl *ebl, GElf_Ehdr *ehdr __attribute__ ((unused)), |
| 4087 | Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg) |
| 4088 | { |
| 4089 | printf (gettext ("\ |
| 4090 | \nDWARF section '%s' at offset %#" PRIx64 ":\n"), |
| 4091 | ".debug_line", (uint64_t) shdr->sh_offset); |
| 4092 | |
| 4093 | if (shdr->sh_size == 0) |
| 4094 | return; |
| 4095 | |
| 4096 | /* There is no functionality in libdw to read the information in the |
| 4097 | way it is represented here. Hardcode the decoder. */ |
| 4098 | Elf_Data *data = elf_getdata (scn, NULL); |
| 4099 | if (data == NULL || data->d_buf == NULL) |
| 4100 | { |
| 4101 | error (0, 0, gettext ("cannot get line data section data: %s"), |
| 4102 | elf_errmsg (-1)); |
| 4103 | return; |
| 4104 | } |
| 4105 | |
| 4106 | const unsigned char *linep = (const unsigned char *) data->d_buf; |
| 4107 | const unsigned char *lineendp; |
| 4108 | |
| 4109 | while (linep |
| 4110 | < (lineendp = (const unsigned char *) data->d_buf + data->d_size)) |
| 4111 | { |
| 4112 | size_t start_offset = linep - (const unsigned char *) data->d_buf; |
| 4113 | |
| 4114 | printf (gettext ("\nTable at offset %Zu:\n"), start_offset); |
| 4115 | |
| 4116 | Dwarf_Word unit_length = read_4ubyte_unaligned_inc (dbg, linep); |
| 4117 | unsigned int length = 4; |
| 4118 | if (unlikely (unit_length == 0xffffffff)) |
| 4119 | { |
| 4120 | if (unlikely (linep + 8 > lineendp)) |
| 4121 | { |
| 4122 | invalid_data: |
| 4123 | error (0, 0, gettext ("invalid data in section [%zu] '%s'"), |
| 4124 | elf_ndxscn (scn), ".debug_line"); |
| 4125 | return; |
| 4126 | } |
| 4127 | unit_length = read_8ubyte_unaligned_inc (dbg, linep); |
| 4128 | length = 8; |
| 4129 | } |
| 4130 | |
| 4131 | /* Check whether we have enough room in the section. */ |
| 4132 | if (unit_length < 2 + length + 5 * 1 |
| 4133 | || unlikely (linep + unit_length > lineendp)) |
| 4134 | goto invalid_data; |
| 4135 | lineendp = linep + unit_length; |
| 4136 | |
| 4137 | /* The next element of the header is the version identifier. */ |
| 4138 | uint_fast16_t version = read_2ubyte_unaligned_inc (dbg, linep); |
| 4139 | |
| 4140 | /* Next comes the header length. */ |
| 4141 | Dwarf_Word header_length; |
| 4142 | if (length == 4) |
| 4143 | header_length = read_4ubyte_unaligned_inc (dbg, linep); |
| 4144 | else |
| 4145 | header_length = read_8ubyte_unaligned_inc (dbg, linep); |
| 4146 | //const unsigned char *header_start = linep; |
| 4147 | |
| 4148 | /* Next the minimum instruction length. */ |
| 4149 | uint_fast8_t minimum_instr_len = *linep++; |
| 4150 | |
| 4151 | /* Then the flag determining the default value of the is_stmt |
| 4152 | register. */ |
| 4153 | uint_fast8_t default_is_stmt = *linep++; |
| 4154 | |
| 4155 | /* Now the line base. */ |
| 4156 | int_fast8_t line_base = *((const int_fast8_t *) linep); |
| 4157 | ++linep; |
| 4158 | |
| 4159 | /* And the line range. */ |
| 4160 | uint_fast8_t line_range = *linep++; |
| 4161 | |
| 4162 | /* The opcode base. */ |
| 4163 | uint_fast8_t opcode_base = *linep++; |
| 4164 | |
| 4165 | /* Print what we got so far. */ |
| 4166 | printf (gettext ("\n" |
| 4167 | " Length: %" PRIu64 "\n" |
| 4168 | " DWARF version: %" PRIuFAST16 "\n" |
| 4169 | " Prologue length: %" PRIu64 "\n" |
| 4170 | " Minimum instruction length: %" PRIuFAST8 "\n" |
| 4171 | " Initial value if '%s': %" PRIuFAST8 "\n" |
| 4172 | " Line base: %" PRIdFAST8 "\n" |
| 4173 | " Line range: %" PRIuFAST8 "\n" |
| 4174 | " Opcode base: %" PRIuFAST8 "\n" |
| 4175 | "\n" |
| 4176 | "Opcodes:\n"), |
| 4177 | (uint64_t) unit_length, version, (uint64_t) header_length, |
| 4178 | minimum_instr_len, "is_stmt", default_is_stmt, line_base, |
| 4179 | line_range, opcode_base); |
| 4180 | |
| 4181 | if (unlikely (linep + opcode_base - 1 >= lineendp)) |
| 4182 | goto invalid_data; |
| 4183 | int opcode_base_l10 = 1; |
| 4184 | unsigned int tmp = opcode_base; |
| 4185 | while (tmp > 10) |
| 4186 | { |
| 4187 | tmp /= 10; |
| 4188 | ++opcode_base_l10; |
| 4189 | } |
| 4190 | const uint8_t *standard_opcode_lengths = linep - 1; |
| 4191 | for (uint_fast8_t cnt = 1; cnt < opcode_base; ++cnt) |
| 4192 | printf (ngettext (" [%*" PRIuFAST8 "] %hhu argument\n", |
| 4193 | " [%*" PRIuFAST8 "] %hhu arguments\n", |
| 4194 | (int) linep[cnt - 1]), |
| 4195 | opcode_base_l10, cnt, linep[cnt - 1]); |
| 4196 | linep += opcode_base - 1; |
| 4197 | if (unlikely (linep >= lineendp)) |
| 4198 | goto invalid_data; |
| 4199 | |
| 4200 | puts (gettext ("\nDirectory table:")); |
| 4201 | while (*linep != 0) |
| 4202 | { |
| 4203 | unsigned char *endp = memchr (linep, '\0', lineendp - linep); |
| 4204 | if (endp == NULL) |
| 4205 | goto invalid_data; |
| 4206 | |
| 4207 | printf (" %s\n", (char *) linep); |
| 4208 | |
| 4209 | linep = endp + 1; |
| 4210 | } |
| 4211 | /* Skip the final NUL byte. */ |
| 4212 | ++linep; |
| 4213 | |
| 4214 | if (unlikely (linep >= lineendp)) |
| 4215 | goto invalid_data; |
| 4216 | puts (gettext ("\nFile name table:\n" |
| 4217 | " Entry Dir Time Size Name")); |
| 4218 | for (unsigned int cnt = 1; *linep != 0; ++cnt) |
| 4219 | { |
| 4220 | /* First comes the file name. */ |
| 4221 | char *fname = (char *) linep; |
| 4222 | unsigned char *endp = memchr (fname, '\0', lineendp - linep); |
| 4223 | if (endp == NULL) |
| 4224 | goto invalid_data; |
| 4225 | linep = endp + 1; |
| 4226 | |
| 4227 | /* Then the index. */ |
| 4228 | unsigned int diridx; |
| 4229 | get_uleb128 (diridx, linep); |
| 4230 | |
| 4231 | /* Next comes the modification time. */ |
| 4232 | unsigned int mtime; |
| 4233 | get_uleb128 (mtime, linep); |
| 4234 | |
| 4235 | /* Finally the length of the file. */ |
| 4236 | unsigned int fsize; |
| 4237 | get_uleb128 (fsize, linep); |
| 4238 | |
| 4239 | printf (" %-5u %-5u %-9u %-9u %s\n", |
| 4240 | cnt, diridx, mtime, fsize, fname); |
| 4241 | } |
| 4242 | /* Skip the final NUL byte. */ |
| 4243 | ++linep; |
| 4244 | |
| 4245 | puts (gettext ("\nLine number statements:")); |
| 4246 | Dwarf_Word address = 0; |
| 4247 | size_t line = 1; |
| 4248 | uint_fast8_t is_stmt = default_is_stmt; |
| 4249 | |
| 4250 | /* Default address value, in case we do not find the CU. */ |
| 4251 | size_t address_size |
| 4252 | = elf_getident (ebl->elf, NULL)[EI_CLASS] == ELFCLASS32 ? 4 : 8; |
| 4253 | |
| 4254 | /* Determine the CU this block is for. */ |
| 4255 | Dwarf_Off cuoffset; |
| 4256 | Dwarf_Off ncuoffset = 0; |
| 4257 | size_t hsize; |
| 4258 | while (dwarf_nextcu (dbg, cuoffset = ncuoffset, &ncuoffset, &hsize, |
| 4259 | NULL, NULL, NULL) == 0) |
| 4260 | { |
| 4261 | Dwarf_Die cudie; |
| 4262 | if (dwarf_offdie (dbg, cuoffset + hsize, &cudie) == NULL) |
| 4263 | continue; |
| 4264 | Dwarf_Attribute stmt_list; |
| 4265 | if (dwarf_attr (&cudie, DW_AT_stmt_list, &stmt_list) == NULL) |
| 4266 | continue; |
| 4267 | Dwarf_Word lineoff; |
| 4268 | if (dwarf_formudata (&stmt_list, &lineoff) != 0) |
| 4269 | continue; |
| 4270 | if (lineoff == start_offset) |
| 4271 | { |
| 4272 | /* Found the CU. */ |
| 4273 | address_size = cudie.cu->address_size; |
| 4274 | break; |
| 4275 | } |
| 4276 | } |
| 4277 | |
| 4278 | while (linep < lineendp) |
| 4279 | { |
| 4280 | unsigned int u128; |
| 4281 | int s128; |
| 4282 | |
| 4283 | /* Read the opcode. */ |
| 4284 | unsigned int opcode = *linep++; |
| 4285 | |
| 4286 | /* Is this a special opcode? */ |
| 4287 | if (likely (opcode >= opcode_base)) |
| 4288 | { |
| 4289 | /* Yes. Handling this is quite easy since the opcode value |
| 4290 | is computed with |
| 4291 | |
| 4292 | opcode = (desired line increment - line_base) |
| 4293 | + (line_range * address advance) + opcode_base |
| 4294 | */ |
| 4295 | int line_increment = (line_base |
| 4296 | + (opcode - opcode_base) % line_range); |
| 4297 | unsigned int address_increment = (minimum_instr_len |
| 4298 | * ((opcode - opcode_base) |
| 4299 | / line_range)); |
| 4300 | |
| 4301 | /* Perform the increments. */ |
| 4302 | line += line_increment; |
| 4303 | address += address_increment; |
| 4304 | |
| 4305 | printf (gettext ("\ |
| 4306 | special opcode %u: address+%u = %#" PRIx64 ", line%+d = %zu\n"), |
| 4307 | opcode, address_increment, (uint64_t) address, |
| 4308 | line_increment, line); |
| 4309 | } |
| 4310 | else if (opcode == 0) |
| 4311 | { |
| 4312 | /* This an extended opcode. */ |
| 4313 | if (unlikely (linep + 2 > lineendp)) |
| 4314 | goto invalid_data; |
| 4315 | |
| 4316 | /* The length. */ |
| 4317 | unsigned int len = *linep++; |
| 4318 | |
| 4319 | if (unlikely (linep + len > lineendp)) |
| 4320 | goto invalid_data; |
| 4321 | |
| 4322 | /* The sub-opcode. */ |
| 4323 | opcode = *linep++; |
| 4324 | |
| 4325 | printf (gettext (" extended opcode %u: "), opcode); |
| 4326 | |
| 4327 | switch (opcode) |
| 4328 | { |
| 4329 | case DW_LNE_end_sequence: |
| 4330 | puts (gettext ("end of sequence")); |
| 4331 | |
| 4332 | /* Reset the registers we care about. */ |
| 4333 | address = 0; |
| 4334 | line = 1; |
| 4335 | is_stmt = default_is_stmt; |
| 4336 | break; |
| 4337 | |
| 4338 | case DW_LNE_set_address: |
| 4339 | if (address_size == 4) |
| 4340 | address = read_4ubyte_unaligned_inc (dbg, linep); |
| 4341 | else |
| 4342 | address = read_8ubyte_unaligned_inc (dbg, linep); |
| 4343 | printf (gettext ("set address to %#" PRIx64 "\n"), |
| 4344 | (uint64_t) address); |
| 4345 | break; |
| 4346 | |
| 4347 | case DW_LNE_define_file: |
| 4348 | { |
| 4349 | char *fname = (char *) linep; |
| 4350 | unsigned char *endp = memchr (linep, '\0', |
| 4351 | lineendp - linep); |
| 4352 | if (endp == NULL) |
| 4353 | goto invalid_data; |
| 4354 | linep = endp + 1; |
| 4355 | |
| 4356 | unsigned int diridx; |
| 4357 | get_uleb128 (diridx, linep); |
| 4358 | Dwarf_Word mtime; |
| 4359 | get_uleb128 (mtime, linep); |
| 4360 | Dwarf_Word filelength; |
| 4361 | get_uleb128 (filelength, linep); |
| 4362 | |
| 4363 | printf (gettext ("\ |
| 4364 | define new file: dir=%u, mtime=%" PRIu64 ", length=%" PRIu64 ", name=%s\n"), |
| 4365 | diridx, (uint64_t) mtime, (uint64_t) filelength, |
| 4366 | fname); |
| 4367 | } |
| 4368 | break; |
| 4369 | |
| 4370 | default: |
| 4371 | /* Unknown, ignore it. */ |
| 4372 | puts (gettext ("unknown opcode")); |
| 4373 | linep += len - 1; |
| 4374 | break; |
| 4375 | } |
| 4376 | } |
| 4377 | else if (opcode <= DW_LNS_set_epilog_begin) |
| 4378 | { |
| 4379 | /* This is a known standard opcode. */ |
| 4380 | switch (opcode) |
| 4381 | { |
| 4382 | case DW_LNS_copy: |
| 4383 | /* Takes no argument. */ |
| 4384 | puts (gettext (" copy")); |
| 4385 | break; |
| 4386 | |
| 4387 | case DW_LNS_advance_pc: |
| 4388 | /* Takes one uleb128 parameter which is added to the |
| 4389 | address. */ |
| 4390 | get_uleb128 (u128, linep); |
| 4391 | address += minimum_instr_len * u128; |
| 4392 | printf (gettext ("\ |
| 4393 | advance address by %u to %#" PRIx64 "\n"), |
| 4394 | u128, (uint64_t) address); |
| 4395 | break; |
| 4396 | |
| 4397 | case DW_LNS_advance_line: |
| 4398 | /* Takes one sleb128 parameter which is added to the |
| 4399 | line. */ |
| 4400 | get_sleb128 (s128, linep); |
| 4401 | line += s128; |
| 4402 | printf (gettext ("\ |
| 4403 | advance line by constant %d to %" PRId64 "\n"), |
| 4404 | s128, (int64_t) line); |
| 4405 | break; |
| 4406 | |
| 4407 | case DW_LNS_set_file: |
| 4408 | /* Takes one uleb128 parameter which is stored in file. */ |
| 4409 | get_uleb128 (u128, linep); |
| 4410 | printf (gettext (" set file to %" PRIu64 "\n"), |
| 4411 | (uint64_t) u128); |
| 4412 | break; |
| 4413 | |
| 4414 | case DW_LNS_set_column: |
| 4415 | /* Takes one uleb128 parameter which is stored in column. */ |
| 4416 | if (unlikely (standard_opcode_lengths[opcode] != 1)) |
| 4417 | goto invalid_data; |
| 4418 | |
| 4419 | get_uleb128 (u128, linep); |
| 4420 | printf (gettext (" set column to %" PRIu64 "\n"), |
| 4421 | (uint64_t) u128); |
| 4422 | break; |
| 4423 | |
| 4424 | case DW_LNS_negate_stmt: |
| 4425 | /* Takes no argument. */ |
| 4426 | is_stmt = 1 - is_stmt; |
| 4427 | printf (gettext (" set '%s' to %" PRIuFAST8 "\n"), |
| 4428 | "is_stmt", is_stmt); |
| 4429 | break; |
| 4430 | |
| 4431 | case DW_LNS_set_basic_block: |
| 4432 | /* Takes no argument. */ |
| 4433 | puts (gettext (" set basic block flag")); |
| 4434 | break; |
| 4435 | |
| 4436 | case DW_LNS_const_add_pc: |
| 4437 | /* Takes no argument. */ |
| 4438 | u128 = (minimum_instr_len |
| 4439 | * ((255 - opcode_base) / line_range)); |
| 4440 | address += u128; |
| 4441 | printf (gettext ("\ |
| 4442 | advance address by constant %u to %#" PRIx64 "\n"), |
| 4443 | u128, (uint64_t) address); |
| 4444 | break; |
| 4445 | |
| 4446 | case DW_LNS_fixed_advance_pc: |
| 4447 | /* Takes one 16 bit parameter which is added to the |
| 4448 | address. */ |
| 4449 | if (unlikely (standard_opcode_lengths[opcode] != 1)) |
| 4450 | goto invalid_data; |
| 4451 | |
| 4452 | u128 = read_2ubyte_unaligned_inc (dbg, linep); |
| 4453 | address += u128; |
| 4454 | printf (gettext ("\ |
| 4455 | advance address by fixed value %u to %#" PRIx64 "\n"), |
| 4456 | u128, (uint64_t) address); |
| 4457 | break; |
| 4458 | |
| 4459 | case DW_LNS_set_prologue_end: |
| 4460 | /* Takes no argument. */ |
| 4461 | puts (gettext (" set prologue end flag")); |
| 4462 | break; |
| 4463 | |
| 4464 | case DW_LNS_set_epilog_begin: |
| 4465 | /* Takes no argument. */ |
| 4466 | puts (gettext (" set epilogue begin flag")); |
| 4467 | break; |
| 4468 | } |
| 4469 | } |
| 4470 | else |
| 4471 | { |
| 4472 | /* This is a new opcode the generator but not we know about. |
| 4473 | Read the parameters associated with it but then discard |
| 4474 | everything. Read all the parameters for this opcode. */ |
| 4475 | printf (ngettext (" unknown opcode with %" PRIu8 " parameter:", |
| 4476 | " unknown opcode with %" PRIu8 " parameters:", |
| 4477 | standard_opcode_lengths[opcode]), |
| 4478 | standard_opcode_lengths[opcode]); |
| 4479 | for (int n = standard_opcode_lengths[opcode]; n > 0; --n) |
| 4480 | { |
| 4481 | get_uleb128 (u128, linep); |
| 4482 | if (n != standard_opcode_lengths[opcode]) |
| 4483 | putc_unlocked (',', stdout); |
| 4484 | printf (" %u", u128); |
| 4485 | } |
| 4486 | |
| 4487 | /* Next round, ignore this opcode. */ |
| 4488 | continue; |
| 4489 | } |
| 4490 | } |
| 4491 | } |
| 4492 | |
| 4493 | /* There must only be one data block. */ |
| 4494 | assert (elf_getdata (scn, data) == NULL); |
| 4495 | } |
| 4496 | |
| 4497 | |
| 4498 | static void |
| 4499 | print_debug_loc_section (Ebl *ebl __attribute__ ((unused)), |
| 4500 | GElf_Ehdr *ehdr __attribute__ ((unused)), |
| 4501 | Elf_Scn *scn __attribute__ ((unused)), |
| 4502 | GElf_Shdr *shdr, |
| 4503 | Dwarf *dbg __attribute__ ((unused))) |
| 4504 | { |
| 4505 | Elf_Data *data = elf_rawdata (scn, NULL); |
| 4506 | |
| 4507 | if (data == NULL) |
| 4508 | { |
| 4509 | error (0, 0, gettext ("cannot get .debug_loc content: %s"), |
| 4510 | elf_errmsg (-1)); |
| 4511 | return; |
| 4512 | } |
| 4513 | |
| 4514 | printf (gettext ("\ |
| 4515 | \nDWARF section '%s' at offset %#" PRIx64 ":\n"), |
| 4516 | ".debug_loc", (uint64_t) shdr->sh_offset); |
| 4517 | |
| 4518 | size_t address_size = ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8; |
| 4519 | |
| 4520 | bool first = true; |
| 4521 | unsigned char *readp = data->d_buf; |
| 4522 | while (readp < (unsigned char *) data->d_buf + data->d_size) |
| 4523 | { |
| 4524 | ptrdiff_t offset = readp - (unsigned char *) data->d_buf; |
| 4525 | |
| 4526 | if (data->d_size - offset < address_size * 2) |
| 4527 | { |
| 4528 | printf (" [%6tx] <INVALID DATA>\n", offset); |
| 4529 | break; |
| 4530 | } |
| 4531 | |
| 4532 | Dwarf_Addr begin; |
| 4533 | Dwarf_Addr end; |
| 4534 | if (address_size == 8) |
| 4535 | { |
| 4536 | begin = read_8ubyte_unaligned_inc (dbg, readp); |
| 4537 | end = read_8ubyte_unaligned_inc (dbg, readp); |
| 4538 | } |
| 4539 | else |
| 4540 | { |
| 4541 | begin = read_4ubyte_unaligned_inc (dbg, readp); |
| 4542 | end = read_4ubyte_unaligned_inc (dbg, readp); |
| 4543 | if (begin == (Dwarf_Addr) (uint32_t) -1) |
| 4544 | begin = (Dwarf_Addr) -1l; |
| 4545 | } |
| 4546 | |
| 4547 | if (begin == (Dwarf_Addr) -1l) /* Base address entry. */ |
| 4548 | printf (" [%6tx] base address %#0*" PRIxMAX "\n", offset, |
| 4549 | 2 + (int) (address_size * 2), (uintmax_t) end); |
| 4550 | else if (begin == 0 && end == 0) /* End of list entry. */ |
| 4551 | first = true; |
| 4552 | else |
| 4553 | { |
| 4554 | /* We have a location expression entry. */ |
| 4555 | uint_fast16_t len = read_2ubyte_unaligned_inc (dbg, readp); |
| 4556 | |
| 4557 | if (first) /* First entry in a list. */ |
| 4558 | printf (" [%6tx] %#0*" PRIxMAX "..%#0*" PRIxMAX, |
| 4559 | offset, |
| 4560 | 2 + (int) (address_size * 2), (uintmax_t) begin, |
| 4561 | 2 + (int) (address_size * 2), (uintmax_t) end); |
| 4562 | else |
| 4563 | printf (" %#0*" PRIxMAX "..%#0*" PRIxMAX, |
| 4564 | 2 + (int) (address_size * 2), (uintmax_t) begin, |
| 4565 | 2 + (int) (address_size * 2), (uintmax_t) end); |
| 4566 | |
| 4567 | print_ops (dbg, 1, 18 + (address_size * 4), |
| 4568 | address_size, len, readp); |
| 4569 | |
| 4570 | first = false; |
| 4571 | readp += len; |
| 4572 | } |
| 4573 | } |
| 4574 | } |
| 4575 | |
| 4576 | struct mac_culist |
| 4577 | { |
| 4578 | Dwarf_Die die; |
| 4579 | Dwarf_Off offset; |
| 4580 | Dwarf_Files *files; |
| 4581 | struct mac_culist *next; |
| 4582 | }; |
| 4583 | |
| 4584 | |
| 4585 | static int |
| 4586 | mac_compare (const void *p1, const void *p2) |
| 4587 | { |
| 4588 | struct mac_culist *m1 = (struct mac_culist *) p1; |
| 4589 | struct mac_culist *m2 = (struct mac_culist *) p2; |
| 4590 | |
| 4591 | if (m1->offset < m2->offset) |
| 4592 | return -1; |
| 4593 | if (m1->offset > m2->offset) |
| 4594 | return 1; |
| 4595 | return 0; |
| 4596 | } |
| 4597 | |
| 4598 | |
| 4599 | static void |
| 4600 | print_debug_macinfo_section (Ebl *ebl __attribute__ ((unused)), |
| 4601 | GElf_Ehdr *ehdr __attribute__ ((unused)), |
| 4602 | Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg) |
| 4603 | { |
| 4604 | printf (gettext ("\ |
| 4605 | \nDWARF section '%s' at offset %#" PRIx64 ":\n"), |
| 4606 | ".debug_macinfo", (uint64_t) shdr->sh_offset); |
| 4607 | putc_unlocked ('\n', stdout); |
| 4608 | |
| 4609 | /* There is no function in libdw to iterate over the raw content of |
| 4610 | the section but it is easy enough to do. */ |
| 4611 | Elf_Data *data = elf_getdata (scn, NULL); |
| 4612 | if (data == NULL || data->d_buf == NULL) |
| 4613 | { |
| 4614 | error (0, 0, gettext ("cannot get macro information section data: %s"), |
| 4615 | elf_errmsg (-1)); |
| 4616 | return; |
| 4617 | } |
| 4618 | |
| 4619 | /* Get the source file information for all CUs. */ |
| 4620 | Dwarf_Off offset; |
| 4621 | Dwarf_Off ncu = 0; |
| 4622 | size_t hsize; |
| 4623 | struct mac_culist *culist = NULL; |
| 4624 | size_t nculist = 0; |
| 4625 | while (dwarf_nextcu (dbg, offset = ncu, &ncu, &hsize, NULL, NULL, NULL) == 0) |
| 4626 | { |
| 4627 | Dwarf_Die cudie; |
| 4628 | if (dwarf_offdie (dbg, offset + hsize, &cudie) == NULL) |
| 4629 | continue; |
| 4630 | |
| 4631 | Dwarf_Attribute attr; |
| 4632 | if (dwarf_attr (&cudie, DW_AT_macro_info, &attr) == NULL) |
| 4633 | continue; |
| 4634 | |
| 4635 | Dwarf_Word macoff; |
| 4636 | if (dwarf_formudata (&attr, &macoff) != 0) |
| 4637 | continue; |
| 4638 | |
| 4639 | struct mac_culist *newp = (struct mac_culist *) alloca (sizeof (*newp)); |
| 4640 | newp->die = cudie; |
| 4641 | newp->offset = macoff; |
| 4642 | newp->files = NULL; |
| 4643 | newp->next = culist; |
| 4644 | culist = newp; |
| 4645 | ++nculist; |
| 4646 | } |
| 4647 | |
| 4648 | /* Convert the list into an array for easier consumption. */ |
| 4649 | struct mac_culist *cus = (struct mac_culist *) alloca ((nculist + 1) |
| 4650 | * sizeof (*cus)); |
| 4651 | /* Add sentinel. */ |
| 4652 | cus[nculist].offset = data->d_size; |
| 4653 | if (nculist > 0) |
| 4654 | { |
| 4655 | for (size_t cnt = nculist - 1; culist != NULL; --cnt) |
| 4656 | { |
| 4657 | assert (cnt < nculist); |
| 4658 | cus[cnt] = *culist; |
| 4659 | culist = culist->next; |
| 4660 | } |
| 4661 | |
| 4662 | /* Sort the array according to the offset in the .debug_macinfo |
| 4663 | section. Note we keep the sentinel at the end. */ |
| 4664 | qsort (cus, nculist, sizeof (*cus), mac_compare); |
| 4665 | } |
| 4666 | |
| 4667 | const unsigned char *readp = (const unsigned char *) data->d_buf; |
| 4668 | const unsigned char *readendp = readp + data->d_size; |
| 4669 | int level = 1; |
| 4670 | |
| 4671 | while (readp < readendp) |
| 4672 | { |
| 4673 | unsigned int opcode = *readp++; |
| 4674 | unsigned int u128; |
| 4675 | unsigned int u128_2; |
| 4676 | const unsigned char *endp; |
| 4677 | |
| 4678 | switch (opcode) |
| 4679 | { |
| 4680 | case DW_MACINFO_define: |
| 4681 | case DW_MACINFO_undef: |
| 4682 | case DW_MACINFO_vendor_ext: |
| 4683 | /* For the first two opcodes the parameters are |
| 4684 | line, string |
| 4685 | For the latter |
| 4686 | number, string. |
| 4687 | We can treat these cases together. */ |
| 4688 | get_uleb128 (u128, readp); |
| 4689 | |
| 4690 | endp = memchr (readp, '\0', readendp - readp); |
| 4691 | if (endp == NULL) |
| 4692 | { |
| 4693 | printf (gettext ("\ |
| 4694 | %*s*** non-terminated string at end of section"), |
| 4695 | level, ""); |
| 4696 | return; |
| 4697 | } |
| 4698 | |
| 4699 | if (opcode == DW_MACINFO_define) |
| 4700 | printf ("%*s#define %s, line %u\n", |
| 4701 | level, "", (char *) readp, u128); |
| 4702 | else if (opcode == DW_MACINFO_undef) |
| 4703 | printf ("%*s#undef %s, line %u\n", |
| 4704 | level, "", (char *) readp, u128); |
| 4705 | else |
| 4706 | printf (" #vendor-ext %s, number %u\n", (char *) readp, u128); |
| 4707 | |
| 4708 | readp = endp + 1; |
| 4709 | break; |
| 4710 | |
| 4711 | case DW_MACINFO_start_file: |
| 4712 | /* The two parameters are line and file index, in this order. */ |
| 4713 | get_uleb128 (u128, readp); |
| 4714 | get_uleb128 (u128_2, readp); |
| 4715 | |
| 4716 | /* Find the CU DIE for this file. */ |
| 4717 | size_t macoff = readp - (const unsigned char *) data->d_buf; |
| 4718 | const char *fname = "???"; |
| 4719 | if (macoff >= cus[0].offset) |
| 4720 | { |
| 4721 | while (macoff >= cus[1].offset) |
| 4722 | ++cus; |
| 4723 | |
| 4724 | if (cus[0].files == NULL |
| 4725 | && dwarf_getsrcfiles (&cus[0].die, &cus[0].files, NULL) != 0) |
| 4726 | cus[0].files = (Dwarf_Files *) -1l; |
| 4727 | |
| 4728 | if (cus[0].files != (Dwarf_Files *) -1l) |
| 4729 | fname = (dwarf_filesrc (cus[0].files, u128_2, NULL, NULL) |
| 4730 | ?: "???"); |
| 4731 | } |
| 4732 | |
| 4733 | printf ("%*sstart_file %u, [%u] %s\n", |
| 4734 | level, "", u128, u128_2, fname); |
| 4735 | ++level; |
| 4736 | break; |
| 4737 | |
| 4738 | case DW_MACINFO_end_file: |
| 4739 | --level; |
| 4740 | printf ("%*send_file\n", level, ""); |
| 4741 | /* Nothing more to do. */ |
| 4742 | break; |
| 4743 | |
| 4744 | default: |
| 4745 | // XXX gcc seems to generate files with a trailing zero. |
| 4746 | if (opcode != 0 || readp != readendp) |
| 4747 | printf ("%*s*** invalid opcode %u\n", level, "", opcode); |
| 4748 | break; |
| 4749 | } |
| 4750 | } |
| 4751 | } |
| 4752 | |
| 4753 | |
| 4754 | /* Callback for printing global names. */ |
| 4755 | static int |
| 4756 | print_pubnames (Dwarf *dbg __attribute__ ((unused)), Dwarf_Global *global, |
| 4757 | void *arg) |
| 4758 | { |
| 4759 | int *np = (int *) arg; |
| 4760 | |
| 4761 | printf (gettext (" [%5d] DIE offset: %6" PRId64 |
| 4762 | ", CU DIE offset: %6" PRId64 ", name: %s\n"), |
| 4763 | (*np)++, global->die_offset, global->cu_offset, global->name); |
| 4764 | |
| 4765 | return 0; |
| 4766 | } |
| 4767 | |
| 4768 | |
| 4769 | /* Print the known exported symbols in the DWARF section '.debug_pubnames'. */ |
| 4770 | static void |
| 4771 | print_debug_pubnames_section (Ebl *ebl __attribute__ ((unused)), |
| 4772 | GElf_Ehdr *ehdr __attribute__ ((unused)), |
| 4773 | Elf_Scn *scn __attribute__ ((unused)), |
| 4774 | GElf_Shdr *shdr, Dwarf *dbg) |
| 4775 | { |
| 4776 | printf (gettext ("\nDWARF section '%s' at offset %#" PRIx64 ":\n"), |
| 4777 | ".debug_pubnames", (uint64_t) shdr->sh_offset); |
| 4778 | |
| 4779 | int n = 0; |
| 4780 | (void) dwarf_getpubnames (dbg, print_pubnames, &n, 0); |
| 4781 | } |
| 4782 | |
| 4783 | /* Print the content of the DWARF string section '.debug_str'. */ |
| 4784 | static void |
| 4785 | print_debug_str_section (Ebl *ebl __attribute__ ((unused)), |
| 4786 | GElf_Ehdr *ehdr __attribute__ ((unused)), |
| 4787 | Elf_Scn *scn __attribute__ ((unused)), |
| 4788 | GElf_Shdr *shdr, Dwarf *dbg) |
| 4789 | { |
| 4790 | /* Compute floor(log16(shdr->sh_size)). */ |
| 4791 | GElf_Addr tmp = shdr->sh_size; |
| 4792 | int digits = 1; |
| 4793 | while (tmp >= 16) |
| 4794 | { |
| 4795 | ++digits; |
| 4796 | tmp >>= 4; |
| 4797 | } |
| 4798 | digits = MAX (4, digits); |
| 4799 | |
| 4800 | printf (gettext ("\nDWARF section '%s' at offset %#" PRIx64 ":\n" |
| 4801 | " %*s String\n"), |
| 4802 | ".debug_str", (uint64_t) shdr->sh_offset, |
| 4803 | /* TRANS: the debugstr| prefix makes the string unique. */ |
| 4804 | digits + 2, sgettext ("debugstr|Offset")); |
| 4805 | |
| 4806 | Dwarf_Off offset = 0; |
| 4807 | while (offset < shdr->sh_size) |
| 4808 | { |
| 4809 | size_t len; |
| 4810 | const char *str = dwarf_getstring (dbg, offset, &len); |
| 4811 | if (str == NULL) |
| 4812 | { |
| 4813 | printf (gettext (" *** error while reading strings: %s\n"), |
| 4814 | dwarf_errmsg (-1)); |
| 4815 | break; |
| 4816 | } |
| 4817 | |
| 4818 | printf (" [%*" PRIx64 "] \"%s\"\n", digits, (uint64_t) offset, str); |
| 4819 | |
| 4820 | offset += len + 1; |
| 4821 | } |
| 4822 | } |
| 4823 | |
| 4824 | |
| 4825 | static void |
| 4826 | print_debug (Ebl *ebl, GElf_Ehdr *ehdr) |
| 4827 | { |
| 4828 | /* Find the version information sections. For this we have to |
| 4829 | search through the section table. */ |
| 4830 | Dwarf *dbg; |
| 4831 | Elf_Scn *scn; |
| 4832 | size_t shstrndx; |
| 4833 | |
| 4834 | /* Before we start the real work get a debug context descriptor. */ |
| 4835 | dbg = dwarf_begin_elf (ebl->elf, DWARF_C_READ, NULL); |
| 4836 | if (dbg == NULL) |
| 4837 | { |
| 4838 | error (0, 0, gettext ("cannot get debug context descriptor: %s"), |
| 4839 | dwarf_errmsg (-1)); |
| 4840 | return; |
| 4841 | } |
| 4842 | |
| 4843 | /* Get the section header string table index. */ |
| 4844 | if (elf_getshstrndx (ebl->elf, &shstrndx) < 0) |
| 4845 | error (EXIT_FAILURE, 0, |
| 4846 | gettext ("cannot get section header string table index")); |
| 4847 | |
| 4848 | scn = NULL; |
| 4849 | while ((scn = elf_nextscn (ebl->elf, scn)) != NULL) |
| 4850 | { |
| 4851 | /* Handle the section if it is part of the versioning handling. */ |
| 4852 | GElf_Shdr shdr_mem; |
| 4853 | GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); |
| 4854 | |
| 4855 | if (shdr != NULL || shdr->sh_type != SHT_PROGBITS) |
| 4856 | { |
| 4857 | static const struct |
| 4858 | { |
| 4859 | const char *name; |
| 4860 | enum section_e bitmask; |
| 4861 | void (*fp) (Ebl *, GElf_Ehdr *, Elf_Scn *, GElf_Shdr *, Dwarf *); |
| 4862 | } debug_sections[] = |
| 4863 | { |
| 4864 | #define NEW_SECTION(name) \ |
| 4865 | { ".debug_" #name, section_##name, print_debug_##name##_section } |
| 4866 | NEW_SECTION (abbrev), |
| 4867 | NEW_SECTION (aranges), |
| 4868 | NEW_SECTION (frame), |
| 4869 | NEW_SECTION (info), |
| 4870 | NEW_SECTION (line), |
| 4871 | NEW_SECTION (loc), |
| 4872 | NEW_SECTION (pubnames), |
| 4873 | NEW_SECTION (str), |
| 4874 | NEW_SECTION (macinfo), |
| 4875 | NEW_SECTION (ranges), |
| 4876 | { ".eh_frame", section_frame, print_debug_frame_section } |
| 4877 | }; |
| 4878 | const int ndebug_sections = (sizeof (debug_sections) |
| 4879 | / sizeof (debug_sections[0])); |
| 4880 | const char *name = elf_strptr (ebl->elf, shstrndx, |
| 4881 | shdr->sh_name); |
| 4882 | int n; |
| 4883 | |
| 4884 | for (n = 0; n < ndebug_sections; ++n) |
| 4885 | if (strcmp (name, debug_sections[n].name) == 0) |
| 4886 | { |
| 4887 | if (print_debug_sections & debug_sections[n].bitmask) |
| 4888 | debug_sections[n].fp (ebl, ehdr, scn, shdr, dbg); |
| 4889 | break; |
| 4890 | } |
| 4891 | } |
| 4892 | } |
| 4893 | |
| 4894 | /* We are done with the DWARF handling. */ |
| 4895 | dwarf_end (dbg); |
| 4896 | } |
| 4897 | |
| 4898 | |
| 4899 | static void |
| 4900 | handle_notes (Ebl *ebl, GElf_Ehdr *ehdr) |
| 4901 | { |
| 4902 | int class = gelf_getclass (ebl->elf); |
| 4903 | size_t cnt; |
| 4904 | |
| 4905 | /* We have to look through the program header to find the note |
| 4906 | sections. There can be more than one. */ |
| 4907 | for (cnt = 0; cnt < ehdr->e_phnum; ++cnt) |
| 4908 | { |
| 4909 | GElf_Phdr mem; |
| 4910 | GElf_Phdr *phdr = gelf_getphdr (ebl->elf, cnt, &mem); |
| 4911 | |
| 4912 | if (phdr == NULL || phdr->p_type != PT_NOTE) |
| 4913 | /* Not what we are looking for. */ |
| 4914 | continue; |
| 4915 | |
| 4916 | printf (gettext ("\ |
| 4917 | \nNote segment of %" PRId64 " bytes at offset %#0" PRIx64 ":\n"), |
| 4918 | phdr->p_filesz, phdr->p_offset); |
| 4919 | |
| 4920 | char *notemem = gelf_rawchunk (ebl->elf, phdr->p_offset, phdr->p_filesz); |
| 4921 | if (notemem == NULL) |
| 4922 | error (EXIT_FAILURE, 0, |
| 4923 | gettext ("cannot get content of note section: %s"), |
| 4924 | elf_errmsg (-1)); |
| 4925 | |
| 4926 | fputs_unlocked (gettext (" Owner Data size Type\n"), stdout); |
| 4927 | |
| 4928 | |
| 4929 | /* Handle the note section content. It consists of one or more |
| 4930 | entries each of which consists of five parts: |
| 4931 | |
| 4932 | - a 32-bit name length |
| 4933 | - a 32-bit descriptor length |
| 4934 | - a 32-bit type field |
| 4935 | - the NUL-terminated name, length as specified in the first field |
| 4936 | - the descriptor, length as specified in the second field |
| 4937 | |
| 4938 | The variable sized fields are padded to 32- or 64-bits |
| 4939 | depending on whether the file is a 32- or 64-bit ELF file. |
| 4940 | */ |
| 4941 | // XXX Which 64-bit archs need 8-byte alignment? x86-64 does not. |
| 4942 | size_t align = class == ELFCLASS32 ? 4 : 4; // XXX 8; |
| 4943 | #define ALIGNED_LEN(len) (((len) + align - 1) & ~(align - 1)) |
| 4944 | |
| 4945 | size_t idx = 0; |
| 4946 | while (idx < phdr->p_filesz) |
| 4947 | { |
| 4948 | /* XXX Handle 64-bit note section entries correctly. */ |
| 4949 | struct |
| 4950 | { |
| 4951 | uint32_t namesz; |
| 4952 | uint32_t descsz; |
| 4953 | uint32_t type; |
| 4954 | char name[0]; |
| 4955 | } *noteentry = (__typeof (noteentry)) (notemem + idx); |
| 4956 | |
| 4957 | if (idx + 12 > phdr->p_filesz |
| 4958 | || (idx + 12 + ALIGNED_LEN (noteentry->namesz) |
| 4959 | + ALIGNED_LEN (noteentry->descsz) > phdr->p_filesz)) |
| 4960 | /* This entry isn't completely contained in the note |
| 4961 | section. Ignore it. */ |
| 4962 | break; |
| 4963 | |
| 4964 | char buf[100]; |
| 4965 | char buf2[100]; |
| 4966 | printf (gettext (" %-13.*s %9" PRId32 " %s\n"), |
| 4967 | (int) noteentry->namesz, noteentry->name, |
| 4968 | noteentry->descsz, |
| 4969 | ehdr->e_type == ET_CORE |
| 4970 | ? ebl_core_note_type_name (ebl, noteentry->type, |
| 4971 | buf, sizeof (buf)) |
| 4972 | : ebl_object_note_type_name (ebl, noteentry->type, |
| 4973 | buf2, sizeof (buf2))); |
| 4974 | |
| 4975 | /* Filter out invalid entries. */ |
| 4976 | if (memchr (noteentry->name, '\0', noteentry->namesz) != NULL |
| 4977 | /* XXX For now help broken Linux kernels. */ |
| 4978 | || 1) |
| 4979 | { |
| 4980 | if (ehdr->e_type == ET_CORE) |
| 4981 | ebl_core_note (ebl, noteentry->name, noteentry->type, |
| 4982 | noteentry->descsz, |
| 4983 | ¬eentry->name[ALIGNED_LEN (noteentry->namesz)]); |
| 4984 | else |
| 4985 | ebl_object_note (ebl, noteentry->name, noteentry->type, |
| 4986 | noteentry->descsz, |
| 4987 | ¬eentry->name[ALIGNED_LEN (noteentry->namesz)]); |
| 4988 | } |
| 4989 | |
| 4990 | /* Move to the next entry. */ |
| 4991 | idx += (12 + ALIGNED_LEN (noteentry->namesz) |
| 4992 | + ALIGNED_LEN (noteentry->descsz)); |
| 4993 | } |
| 4994 | |
| 4995 | gelf_freechunk (ebl->elf, notemem); |
| 4996 | } |
| 4997 | } |