Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 1 | /* Print information from ELF file in human-readable form. |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2 | Copyright (C) 1999-2014 Red Hat, Inc. |
| 3 | This file is part of elfutils. |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4 | Written by Ulrich Drepper <drepper@redhat.com>, 1999. |
| 5 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6 | This file is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 3 of the License, or |
| 9 | (at your option) any later version. |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 10 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 11 | elfutils is distributed in the hope that it will be useful, but |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 12 | WITHOUT ANY WARRANTY; without even the implied warranty of |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 15 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 18 | |
| 19 | #ifdef HAVE_CONFIG_H |
| 20 | # include <config.h> |
| 21 | #endif |
| 22 | |
| 23 | #include <argp.h> |
| 24 | #include <assert.h> |
| 25 | #include <ctype.h> |
| 26 | #include <dwarf.h> |
| 27 | #include <errno.h> |
| 28 | #include <error.h> |
| 29 | #include <fcntl.h> |
| 30 | #include <gelf.h> |
| 31 | #include <inttypes.h> |
| 32 | #include <langinfo.h> |
| 33 | #include <libdw.h> |
| 34 | #include <libdwfl.h> |
| 35 | #include <libintl.h> |
| 36 | #include <locale.h> |
| 37 | #include <stdarg.h> |
| 38 | #include <stdbool.h> |
| 39 | #include <stdlib.h> |
| 40 | #include <string.h> |
| 41 | #include <time.h> |
| 42 | #include <unistd.h> |
| 43 | #include <sys/param.h> |
| 44 | #include <sys/stat.h> |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 45 | #include <signal.h> |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 46 | |
| 47 | #include <system.h> |
| 48 | #include "../libelf/libelfP.h" |
| 49 | #include "../libelf/common.h" |
| 50 | #include "../libebl/libeblP.h" |
| 51 | #include "../libdw/libdwP.h" |
| 52 | #include "../libdwfl/libdwflP.h" |
| 53 | #include "../libdw/memory-access.h" |
| 54 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 55 | #include "../libdw/known-dwarf.h" |
| 56 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 57 | |
| 58 | /* Name and version of program. */ |
| 59 | static void print_version (FILE *stream, struct argp_state *state); |
| 60 | ARGP_PROGRAM_VERSION_HOOK_DEF = print_version; |
| 61 | |
| 62 | /* Bug report address. */ |
| 63 | ARGP_PROGRAM_BUG_ADDRESS_DEF = PACKAGE_BUGREPORT; |
| 64 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 65 | /* argp key value for --elf-section, non-ascii. */ |
| 66 | #define ELF_INPUT_SECTION 256 |
| 67 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 68 | /* Definitions of arguments for argp functions. */ |
| 69 | static const struct argp_option options[] = |
| 70 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 71 | { NULL, 0, NULL, 0, N_("ELF input selection:"), 0 }, |
| 72 | { "elf-section", ELF_INPUT_SECTION, "SECTION", OPTION_ARG_OPTIONAL, |
| 73 | N_("Use the named SECTION (default .gnu_debugdata) as (compressed) ELF " |
| 74 | "input data"), 0 }, |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 75 | { NULL, 0, NULL, 0, N_("ELF output selection:"), 0 }, |
| 76 | { "all", 'a', NULL, 0, |
| 77 | N_("All these plus -p .strtab -p .dynstr -p .comment"), 0 }, |
| 78 | { "dynamic", 'd', NULL, 0, N_("Display the dynamic segment"), 0 }, |
| 79 | { "file-header", 'h', NULL, 0, N_("Display the ELF file header"), 0 }, |
| 80 | { "histogram", 'I', NULL, 0, |
| 81 | N_("Display histogram of bucket list lengths"), 0 }, |
| 82 | { "program-headers", 'l', NULL, 0, N_("Display the program headers"), 0 }, |
| 83 | { "segments", 'l', NULL, OPTION_ALIAS | OPTION_HIDDEN, NULL, 0 }, |
| 84 | { "relocs", 'r', NULL, 0, N_("Display relocations"), 0 }, |
| 85 | { "section-headers", 'S', NULL, 0, N_("Display the sections' headers"), 0 }, |
| 86 | { "sections", 'S', NULL, OPTION_ALIAS | OPTION_HIDDEN, NULL, 0 }, |
| 87 | { "symbols", 's', NULL, 0, N_("Display the symbol table"), 0 }, |
| 88 | { "version-info", 'V', NULL, 0, N_("Display versioning information"), 0 }, |
| 89 | { "notes", 'n', NULL, 0, N_("Display the ELF notes"), 0 }, |
| 90 | { "arch-specific", 'A', NULL, 0, |
| 91 | N_("Display architecture specific information, if any"), 0 }, |
| 92 | { "exception", 'e', NULL, 0, |
| 93 | N_("Display sections for exception handling"), 0 }, |
| 94 | |
| 95 | { NULL, 0, NULL, 0, N_("Additional output selection:"), 0 }, |
| 96 | { "debug-dump", 'w', "SECTION", OPTION_ARG_OPTIONAL, |
| 97 | N_("Display DWARF section content. SECTION can be one of abbrev, " |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 98 | "aranges, decodedaranges, frame, gdb_index, info, loc, line, " |
| 99 | "decodedline, ranges, pubnames, str, macinfo, macro or exception"), 0 }, |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 100 | { "hex-dump", 'x', "SECTION", 0, |
| 101 | N_("Dump the uninterpreted contents of SECTION, by number or name"), 0 }, |
| 102 | { "strings", 'p', "SECTION", OPTION_ARG_OPTIONAL, |
| 103 | N_("Print string contents of sections"), 0 }, |
| 104 | { "string-dump", 'p', NULL, OPTION_ALIAS | OPTION_HIDDEN, NULL, 0 }, |
| 105 | { "archive-index", 'c', NULL, 0, |
| 106 | N_("Display the symbol index of an archive"), 0 }, |
| 107 | |
| 108 | { NULL, 0, NULL, 0, N_("Output control:"), 0 }, |
| 109 | { "numeric-addresses", 'N', NULL, 0, |
| 110 | N_("Do not find symbol names for addresses in DWARF data"), 0 }, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 111 | { "unresolved-address-offsets", 'U', NULL, 0, |
| 112 | N_("Display just offsets instead of resolving values to addresses in DWARF data"), 0 }, |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 113 | { "wide", 'W', NULL, 0, |
| 114 | N_("Ignored for compatibility (lines always wide)"), 0 }, |
| 115 | { NULL, 0, NULL, 0, NULL, 0 } |
| 116 | }; |
| 117 | |
| 118 | /* Short description of program. */ |
| 119 | static const char doc[] = N_("\ |
| 120 | Print information from ELF file in human-readable form."); |
| 121 | |
| 122 | /* Strings for arguments in help texts. */ |
| 123 | static const char args_doc[] = N_("FILE..."); |
| 124 | |
| 125 | /* Prototype for option handler. */ |
| 126 | static error_t parse_opt (int key, char *arg, struct argp_state *state); |
| 127 | |
| 128 | /* Data structure to communicate with argp functions. */ |
| 129 | static struct argp argp = |
| 130 | { |
| 131 | options, parse_opt, args_doc, doc, NULL, NULL, NULL |
| 132 | }; |
| 133 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 134 | /* If non-null, the section from which we should read to (compressed) ELF. */ |
| 135 | static const char *elf_input_section = NULL; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 136 | |
| 137 | /* Flags set by the option controlling the output. */ |
| 138 | |
| 139 | /* True if dynamic segment should be printed. */ |
| 140 | static bool print_dynamic_table; |
| 141 | |
| 142 | /* True if the file header should be printed. */ |
| 143 | static bool print_file_header; |
| 144 | |
| 145 | /* True if the program headers should be printed. */ |
| 146 | static bool print_program_header; |
| 147 | |
| 148 | /* True if relocations should be printed. */ |
| 149 | static bool print_relocations; |
| 150 | |
| 151 | /* True if the section headers should be printed. */ |
| 152 | static bool print_section_header; |
| 153 | |
| 154 | /* True if the symbol table should be printed. */ |
| 155 | static bool print_symbol_table; |
| 156 | |
| 157 | /* True if the version information should be printed. */ |
| 158 | static bool print_version_info; |
| 159 | |
| 160 | /* True if section groups should be printed. */ |
| 161 | static bool print_section_groups; |
| 162 | |
| 163 | /* True if bucket list length histogram should be printed. */ |
| 164 | static bool print_histogram; |
| 165 | |
| 166 | /* True if the architecture specific data should be printed. */ |
| 167 | static bool print_arch; |
| 168 | |
| 169 | /* True if note section content should be printed. */ |
| 170 | static bool print_notes; |
| 171 | |
| 172 | /* True if SHF_STRINGS section content should be printed. */ |
| 173 | static bool print_string_sections; |
| 174 | |
| 175 | /* True if archive index should be printed. */ |
| 176 | static bool print_archive_index; |
| 177 | |
| 178 | /* True if any of the control options except print_archive_index is set. */ |
| 179 | static bool any_control_option; |
| 180 | |
| 181 | /* True if we should print addresses from DWARF in symbolic form. */ |
| 182 | static bool print_address_names = true; |
| 183 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 184 | /* True if we should print raw values instead of relativized addresses. */ |
| 185 | static bool print_unresolved_addresses = false; |
| 186 | |
| 187 | /* True if we should print the .debug_aranges section using libdw. */ |
| 188 | static bool decodedaranges = false; |
| 189 | |
| 190 | /* True if we should print the .debug_aranges section using libdw. */ |
| 191 | static bool decodedline = false; |
| 192 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 193 | /* Select printing of debugging sections. */ |
| 194 | static enum section_e |
| 195 | { |
| 196 | section_abbrev = 1, /* .debug_abbrev */ |
| 197 | section_aranges = 2, /* .debug_aranges */ |
| 198 | section_frame = 4, /* .debug_frame or .eh_frame & al. */ |
| 199 | section_info = 8, /* .debug_info, .debug_types */ |
| 200 | section_types = section_info, |
| 201 | section_line = 16, /* .debug_line */ |
| 202 | section_loc = 32, /* .debug_loc */ |
| 203 | section_pubnames = 64, /* .debug_pubnames */ |
| 204 | section_str = 128, /* .debug_str */ |
| 205 | section_macinfo = 256, /* .debug_macinfo */ |
| 206 | section_ranges = 512, /* .debug_ranges */ |
| 207 | section_exception = 1024, /* .eh_frame & al. */ |
| 208 | section_gdb_index = 2048, /* .gdb_index */ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 209 | section_macro = 4096, /* .debug_macro */ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 210 | section_all = (section_abbrev | section_aranges | section_frame |
| 211 | | section_info | section_line | section_loc |
| 212 | | section_pubnames | section_str | section_macinfo |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 213 | | section_ranges | section_exception | section_gdb_index |
| 214 | | section_macro) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 215 | } print_debug_sections, implicit_debug_sections; |
| 216 | |
| 217 | /* Select hex dumping of sections. */ |
| 218 | static struct section_argument *dump_data_sections; |
| 219 | static struct section_argument **dump_data_sections_tail = &dump_data_sections; |
| 220 | |
| 221 | /* Select string dumping of sections. */ |
| 222 | static struct section_argument *string_sections; |
| 223 | static struct section_argument **string_sections_tail = &string_sections; |
| 224 | |
| 225 | struct section_argument |
| 226 | { |
| 227 | struct section_argument *next; |
| 228 | const char *arg; |
| 229 | bool implicit; |
| 230 | }; |
| 231 | |
| 232 | /* Numbers of sections and program headers in the file. */ |
| 233 | static size_t shnum; |
| 234 | static size_t phnum; |
| 235 | |
| 236 | |
| 237 | /* Declarations of local functions. */ |
| 238 | static void process_file (int fd, const char *fname, bool only_one); |
| 239 | static void process_elf_file (Dwfl_Module *dwflmod, int fd); |
| 240 | static void print_ehdr (Ebl *ebl, GElf_Ehdr *ehdr); |
| 241 | static void print_shdr (Ebl *ebl, GElf_Ehdr *ehdr); |
| 242 | static void print_phdr (Ebl *ebl, GElf_Ehdr *ehdr); |
| 243 | static void print_scngrp (Ebl *ebl); |
| 244 | static void print_dynamic (Ebl *ebl); |
| 245 | static void print_relocs (Ebl *ebl, GElf_Ehdr *ehdr); |
| 246 | static void handle_relocs_rel (Ebl *ebl, GElf_Ehdr *ehdr, Elf_Scn *scn, |
| 247 | GElf_Shdr *shdr); |
| 248 | static void handle_relocs_rela (Ebl *ebl, GElf_Ehdr *ehdr, Elf_Scn *scn, |
| 249 | GElf_Shdr *shdr); |
| 250 | static void print_symtab (Ebl *ebl, int type); |
| 251 | static void handle_symtab (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr); |
| 252 | static void print_verinfo (Ebl *ebl); |
| 253 | static void handle_verneed (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr); |
| 254 | static void handle_verdef (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr); |
| 255 | static void handle_versym (Ebl *ebl, Elf_Scn *scn, |
| 256 | GElf_Shdr *shdr); |
| 257 | static void print_debug (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr); |
| 258 | static void handle_hash (Ebl *ebl); |
| 259 | static void handle_notes (Ebl *ebl, GElf_Ehdr *ehdr); |
| 260 | static void print_liblist (Ebl *ebl); |
| 261 | static void print_attributes (Ebl *ebl, const GElf_Ehdr *ehdr); |
| 262 | static void dump_data (Ebl *ebl); |
| 263 | static void dump_strings (Ebl *ebl); |
| 264 | static void print_strings (Ebl *ebl); |
| 265 | static void dump_archive_index (Elf *, const char *); |
| 266 | |
| 267 | |
| 268 | int |
| 269 | main (int argc, char *argv[]) |
| 270 | { |
| 271 | /* Set locale. */ |
| 272 | setlocale (LC_ALL, ""); |
| 273 | |
| 274 | /* Initialize the message catalog. */ |
| 275 | textdomain (PACKAGE_TARNAME); |
| 276 | |
| 277 | /* Parse and process arguments. */ |
| 278 | int remaining; |
| 279 | argp_parse (&argp, argc, argv, 0, &remaining, NULL); |
| 280 | |
| 281 | /* Before we start tell the ELF library which version we are using. */ |
| 282 | elf_version (EV_CURRENT); |
| 283 | |
| 284 | /* Now process all the files given at the command line. */ |
| 285 | bool only_one = remaining + 1 == argc; |
| 286 | do |
| 287 | { |
| 288 | /* Open the file. */ |
| 289 | int fd = open (argv[remaining], O_RDONLY); |
| 290 | if (fd == -1) |
| 291 | { |
| 292 | error (0, errno, gettext ("cannot open input file")); |
| 293 | continue; |
| 294 | } |
| 295 | |
| 296 | process_file (fd, argv[remaining], only_one); |
| 297 | |
| 298 | close (fd); |
| 299 | } |
| 300 | while (++remaining < argc); |
| 301 | |
| 302 | return error_message_count != 0; |
| 303 | } |
| 304 | |
| 305 | |
| 306 | /* Handle program arguments. */ |
| 307 | static error_t |
| 308 | parse_opt (int key, char *arg, |
| 309 | struct argp_state *state __attribute__ ((unused))) |
| 310 | { |
| 311 | void add_dump_section (const char *name, bool implicit) |
| 312 | { |
| 313 | struct section_argument *a = xmalloc (sizeof *a); |
| 314 | a->arg = name; |
| 315 | a->next = NULL; |
| 316 | a->implicit = implicit; |
| 317 | struct section_argument ***tailp |
| 318 | = key == 'x' ? &dump_data_sections_tail : &string_sections_tail; |
| 319 | **tailp = a; |
| 320 | *tailp = &a->next; |
| 321 | } |
| 322 | |
| 323 | switch (key) |
| 324 | { |
| 325 | case 'a': |
| 326 | print_file_header = true; |
| 327 | print_program_header = true; |
| 328 | print_relocations = true; |
| 329 | print_section_header = true; |
| 330 | print_symbol_table = true; |
| 331 | print_version_info = true; |
| 332 | print_dynamic_table = true; |
| 333 | print_section_groups = true; |
| 334 | print_histogram = true; |
| 335 | print_arch = true; |
| 336 | print_notes = true; |
| 337 | implicit_debug_sections |= section_exception; |
| 338 | add_dump_section (".strtab", true); |
| 339 | add_dump_section (".dynstr", true); |
| 340 | add_dump_section (".comment", true); |
| 341 | any_control_option = true; |
| 342 | break; |
| 343 | case 'A': |
| 344 | print_arch = true; |
| 345 | any_control_option = true; |
| 346 | break; |
| 347 | case 'd': |
| 348 | print_dynamic_table = true; |
| 349 | any_control_option = true; |
| 350 | break; |
| 351 | case 'e': |
| 352 | print_debug_sections |= section_exception; |
| 353 | any_control_option = true; |
| 354 | break; |
| 355 | case 'g': |
| 356 | print_section_groups = true; |
| 357 | any_control_option = true; |
| 358 | break; |
| 359 | case 'h': |
| 360 | print_file_header = true; |
| 361 | any_control_option = true; |
| 362 | break; |
| 363 | case 'I': |
| 364 | print_histogram = true; |
| 365 | any_control_option = true; |
| 366 | break; |
| 367 | case 'l': |
| 368 | print_program_header = true; |
| 369 | any_control_option = true; |
| 370 | break; |
| 371 | case 'n': |
| 372 | print_notes = true; |
| 373 | any_control_option = true; |
| 374 | break; |
| 375 | case 'r': |
| 376 | print_relocations = true; |
| 377 | any_control_option = true; |
| 378 | break; |
| 379 | case 'S': |
| 380 | print_section_header = true; |
| 381 | any_control_option = true; |
| 382 | break; |
| 383 | case 's': |
| 384 | print_symbol_table = true; |
| 385 | any_control_option = true; |
| 386 | break; |
| 387 | case 'V': |
| 388 | print_version_info = true; |
| 389 | any_control_option = true; |
| 390 | break; |
| 391 | case 'c': |
| 392 | print_archive_index = true; |
| 393 | break; |
| 394 | case 'w': |
| 395 | if (arg == NULL) |
| 396 | print_debug_sections = section_all; |
| 397 | else if (strcmp (arg, "abbrev") == 0) |
| 398 | print_debug_sections |= section_abbrev; |
| 399 | else if (strcmp (arg, "aranges") == 0) |
| 400 | print_debug_sections |= section_aranges; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 401 | else if (strcmp (arg, "decodedaranges") == 0) |
| 402 | { |
| 403 | print_debug_sections |= section_aranges; |
| 404 | decodedaranges = true; |
| 405 | } |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 406 | else if (strcmp (arg, "ranges") == 0) |
| 407 | { |
| 408 | print_debug_sections |= section_ranges; |
| 409 | implicit_debug_sections |= section_info; |
| 410 | } |
| 411 | else if (strcmp (arg, "frame") == 0 || strcmp (arg, "frames") == 0) |
| 412 | print_debug_sections |= section_frame; |
| 413 | else if (strcmp (arg, "info") == 0) |
| 414 | print_debug_sections |= section_info; |
| 415 | else if (strcmp (arg, "loc") == 0) |
| 416 | { |
| 417 | print_debug_sections |= section_loc; |
| 418 | implicit_debug_sections |= section_info; |
| 419 | } |
| 420 | else if (strcmp (arg, "line") == 0) |
| 421 | print_debug_sections |= section_line; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 422 | else if (strcmp (arg, "decodedline") == 0) |
| 423 | { |
| 424 | print_debug_sections |= section_line; |
| 425 | decodedline = true; |
| 426 | } |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 427 | else if (strcmp (arg, "pubnames") == 0) |
| 428 | print_debug_sections |= section_pubnames; |
| 429 | else if (strcmp (arg, "str") == 0) |
| 430 | print_debug_sections |= section_str; |
| 431 | else if (strcmp (arg, "macinfo") == 0) |
| 432 | print_debug_sections |= section_macinfo; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 433 | else if (strcmp (arg, "macro") == 0) |
| 434 | print_debug_sections |= section_macro; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 435 | else if (strcmp (arg, "exception") == 0) |
| 436 | print_debug_sections |= section_exception; |
| 437 | else if (strcmp (arg, "gdb_index") == 0) |
| 438 | print_debug_sections |= section_gdb_index; |
| 439 | else |
| 440 | { |
| 441 | fprintf (stderr, gettext ("Unknown DWARF debug section `%s'.\n"), |
| 442 | arg); |
| 443 | argp_help (&argp, stderr, ARGP_HELP_SEE, |
| 444 | program_invocation_short_name); |
| 445 | exit (1); |
| 446 | } |
| 447 | any_control_option = true; |
| 448 | break; |
| 449 | case 'p': |
| 450 | any_control_option = true; |
| 451 | if (arg == NULL) |
| 452 | { |
| 453 | print_string_sections = true; |
| 454 | break; |
| 455 | } |
| 456 | /* Fall through. */ |
| 457 | case 'x': |
| 458 | add_dump_section (arg, false); |
| 459 | any_control_option = true; |
| 460 | break; |
| 461 | case 'N': |
| 462 | print_address_names = false; |
| 463 | break; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 464 | case 'U': |
| 465 | print_unresolved_addresses = true; |
| 466 | break; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 467 | case ARGP_KEY_NO_ARGS: |
| 468 | fputs (gettext ("Missing file name.\n"), stderr); |
| 469 | goto do_argp_help; |
| 470 | case ARGP_KEY_FINI: |
| 471 | if (! any_control_option && ! print_archive_index) |
| 472 | { |
| 473 | fputs (gettext ("No operation specified.\n"), stderr); |
| 474 | do_argp_help: |
| 475 | argp_help (&argp, stderr, ARGP_HELP_SEE, |
| 476 | program_invocation_short_name); |
| 477 | exit (EXIT_FAILURE); |
| 478 | } |
| 479 | break; |
| 480 | case 'W': /* Ignored. */ |
| 481 | break; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 482 | case ELF_INPUT_SECTION: |
| 483 | if (arg == NULL) |
| 484 | elf_input_section = ".gnu_debugdata"; |
| 485 | else |
| 486 | elf_input_section = arg; |
| 487 | break; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 488 | default: |
| 489 | return ARGP_ERR_UNKNOWN; |
| 490 | } |
| 491 | return 0; |
| 492 | } |
| 493 | |
| 494 | |
| 495 | /* Print the version information. */ |
| 496 | static void |
| 497 | print_version (FILE *stream, struct argp_state *state __attribute__ ((unused))) |
| 498 | { |
| 499 | fprintf (stream, "readelf (%s) %s\n", PACKAGE_NAME, PACKAGE_VERSION); |
| 500 | fprintf (stream, gettext ("\ |
| 501 | Copyright (C) %s Red Hat, Inc.\n\ |
| 502 | This is free software; see the source for copying conditions. There is NO\n\ |
| 503 | warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\ |
| 504 | "), "2012"); |
| 505 | fprintf (stream, gettext ("Written by %s.\n"), "Ulrich Drepper"); |
| 506 | } |
| 507 | |
| 508 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 509 | /* Create a file descriptor to read the data from the |
| 510 | elf_input_section given a file descriptor to an ELF file. */ |
| 511 | static int |
| 512 | open_input_section (int fd) |
| 513 | { |
| 514 | size_t shnums; |
| 515 | size_t cnt; |
| 516 | size_t shstrndx; |
| 517 | Elf *elf = elf_begin (fd, ELF_C_READ_MMAP, NULL); |
| 518 | if (elf == NULL) |
| 519 | { |
| 520 | error (0, 0, gettext ("cannot generate Elf descriptor: %s"), |
| 521 | elf_errmsg (-1)); |
| 522 | return -1; |
| 523 | } |
| 524 | |
| 525 | if (elf_getshdrnum (elf, &shnums) < 0) |
| 526 | { |
| 527 | error (0, 0, gettext ("cannot determine number of sections: %s"), |
| 528 | elf_errmsg (-1)); |
| 529 | open_error: |
| 530 | elf_end (elf); |
| 531 | return -1; |
| 532 | } |
| 533 | |
| 534 | if (elf_getshdrstrndx (elf, &shstrndx) < 0) |
| 535 | { |
| 536 | error (0, 0, gettext ("cannot get section header string table index")); |
| 537 | goto open_error; |
| 538 | } |
| 539 | |
| 540 | for (cnt = 0; cnt < shnums; ++cnt) |
| 541 | { |
| 542 | Elf_Scn *scn = elf_getscn (elf, cnt); |
| 543 | if (scn == NULL) |
| 544 | { |
| 545 | error (0, 0, gettext ("cannot get section: %s"), |
| 546 | elf_errmsg (-1)); |
| 547 | goto open_error; |
| 548 | } |
| 549 | |
| 550 | GElf_Shdr shdr_mem; |
| 551 | GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); |
| 552 | if (unlikely (shdr == NULL)) |
| 553 | { |
| 554 | error (0, 0, gettext ("cannot get section header: %s"), |
| 555 | elf_errmsg (-1)); |
| 556 | goto open_error; |
| 557 | } |
| 558 | |
| 559 | const char *sname = elf_strptr (elf, shstrndx, shdr->sh_name); |
| 560 | if (sname == NULL) |
| 561 | { |
| 562 | error (0, 0, gettext ("cannot get section name")); |
| 563 | goto open_error; |
| 564 | } |
| 565 | |
| 566 | if (strcmp (sname, elf_input_section) == 0) |
| 567 | { |
| 568 | Elf_Data *data = elf_rawdata (scn, NULL); |
| 569 | if (data == NULL) |
| 570 | { |
| 571 | error (0, 0, gettext ("cannot get %s content: %s"), |
| 572 | sname, elf_errmsg (-1)); |
| 573 | goto open_error; |
| 574 | } |
| 575 | |
| 576 | /* Create (and immediately unlink) a temporary file to store |
| 577 | section data in to create a file descriptor for it. */ |
| 578 | const char *tmpdir = getenv ("TMPDIR") ?: P_tmpdir; |
| 579 | static const char suffix[] = "/readelfXXXXXX"; |
| 580 | int tmplen = strlen (tmpdir) + sizeof (suffix); |
| 581 | char *tempname = alloca (tmplen); |
| 582 | sprintf (tempname, "%s%s", tmpdir, suffix); |
| 583 | |
| 584 | int sfd = mkstemp (tempname); |
| 585 | if (sfd == -1) |
| 586 | { |
| 587 | error (0, 0, gettext ("cannot create temp file '%s'"), |
| 588 | tempname); |
| 589 | goto open_error; |
| 590 | } |
| 591 | unlink (tempname); |
| 592 | |
| 593 | ssize_t size = data->d_size; |
| 594 | if (write_retry (sfd, data->d_buf, size) != size) |
| 595 | { |
| 596 | error (0, 0, gettext ("cannot write section data")); |
| 597 | goto open_error; |
| 598 | } |
| 599 | |
| 600 | if (elf_end (elf) != 0) |
| 601 | { |
| 602 | error (0, 0, gettext ("error while closing Elf descriptor: %s"), |
| 603 | elf_errmsg (-1)); |
| 604 | return -1; |
| 605 | } |
| 606 | |
| 607 | if (lseek (sfd, 0, SEEK_SET) == -1) |
| 608 | { |
| 609 | error (0, 0, gettext ("error while rewinding file descriptor")); |
| 610 | return -1; |
| 611 | } |
| 612 | |
| 613 | return sfd; |
| 614 | } |
| 615 | } |
| 616 | |
| 617 | /* Named section not found. */ |
| 618 | if (elf_end (elf) != 0) |
| 619 | error (0, 0, gettext ("error while closing Elf descriptor: %s"), |
| 620 | elf_errmsg (-1)); |
| 621 | return -1; |
| 622 | } |
| 623 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 624 | /* Check if the file is an archive, and if so dump its index. */ |
| 625 | static void |
| 626 | check_archive_index (int fd, const char *fname, bool only_one) |
| 627 | { |
| 628 | /* Create an `Elf' descriptor. */ |
| 629 | Elf *elf = elf_begin (fd, ELF_C_READ_MMAP, NULL); |
| 630 | if (elf == NULL) |
| 631 | error (0, 0, gettext ("cannot generate Elf descriptor: %s"), |
| 632 | elf_errmsg (-1)); |
| 633 | else |
| 634 | { |
| 635 | if (elf_kind (elf) == ELF_K_AR) |
| 636 | { |
| 637 | if (!only_one) |
| 638 | printf ("\n%s:\n\n", fname); |
| 639 | dump_archive_index (elf, fname); |
| 640 | } |
| 641 | else |
| 642 | error (0, 0, |
| 643 | gettext ("'%s' is not an archive, cannot print archive index"), |
| 644 | fname); |
| 645 | |
| 646 | /* Now we can close the descriptor. */ |
| 647 | if (elf_end (elf) != 0) |
| 648 | error (0, 0, gettext ("error while closing Elf descriptor: %s"), |
| 649 | elf_errmsg (-1)); |
| 650 | } |
| 651 | } |
| 652 | |
| 653 | /* Trivial callback used for checking if we opened an archive. */ |
| 654 | static int |
| 655 | count_dwflmod (Dwfl_Module *dwflmod __attribute__ ((unused)), |
| 656 | void **userdata __attribute__ ((unused)), |
| 657 | const char *name __attribute__ ((unused)), |
| 658 | Dwarf_Addr base __attribute__ ((unused)), |
| 659 | void *arg) |
| 660 | { |
| 661 | if (*(bool *) arg) |
| 662 | return DWARF_CB_ABORT; |
| 663 | *(bool *) arg = true; |
| 664 | return DWARF_CB_OK; |
| 665 | } |
| 666 | |
| 667 | struct process_dwflmod_args |
| 668 | { |
| 669 | int fd; |
| 670 | bool only_one; |
| 671 | }; |
| 672 | |
| 673 | static int |
| 674 | process_dwflmod (Dwfl_Module *dwflmod, |
| 675 | void **userdata __attribute__ ((unused)), |
| 676 | const char *name __attribute__ ((unused)), |
| 677 | Dwarf_Addr base __attribute__ ((unused)), |
| 678 | void *arg) |
| 679 | { |
| 680 | const struct process_dwflmod_args *a = arg; |
| 681 | |
| 682 | /* Print the file name. */ |
| 683 | if (!a->only_one) |
| 684 | { |
| 685 | const char *fname; |
| 686 | dwfl_module_info (dwflmod, NULL, NULL, NULL, NULL, NULL, &fname, NULL); |
| 687 | |
| 688 | printf ("\n%s:\n\n", fname); |
| 689 | } |
| 690 | |
| 691 | process_elf_file (dwflmod, a->fd); |
| 692 | |
| 693 | return DWARF_CB_OK; |
| 694 | } |
| 695 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 696 | /* Stub libdwfl callback, only the ELF handle already open is ever used. |
| 697 | Only used for finding the alternate debug file if the Dwarf comes from |
| 698 | the main file. We are not interested in separate debuginfo. */ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 699 | static int |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 700 | find_no_debuginfo (Dwfl_Module *mod, |
| 701 | void **userdata, |
| 702 | const char *modname, |
| 703 | Dwarf_Addr base, |
| 704 | const char *file_name, |
| 705 | const char *debuglink_file, |
| 706 | GElf_Word debuglink_crc, |
| 707 | char **debuginfo_file_name) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 708 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 709 | Dwarf_Addr dwbias; |
| 710 | dwfl_module_info (mod, NULL, NULL, NULL, &dwbias, NULL, NULL, NULL); |
| 711 | |
| 712 | /* We are only interested if the Dwarf has been setup on the main |
| 713 | elf file but is only missing the alternate debug link. If dwbias |
| 714 | hasn't even been setup, this is searching for separate debuginfo |
| 715 | for the main elf. We don't care in that case. */ |
| 716 | if (dwbias == (Dwarf_Addr) -1) |
| 717 | return -1; |
| 718 | |
| 719 | return dwfl_standard_find_debuginfo (mod, userdata, modname, base, |
| 720 | file_name, debuglink_file, |
| 721 | debuglink_crc, debuginfo_file_name); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 722 | } |
| 723 | |
| 724 | /* Process one input file. */ |
| 725 | static void |
| 726 | process_file (int fd, const char *fname, bool only_one) |
| 727 | { |
| 728 | if (print_archive_index) |
| 729 | check_archive_index (fd, fname, only_one); |
| 730 | |
| 731 | if (!any_control_option) |
| 732 | return; |
| 733 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 734 | if (elf_input_section != NULL) |
| 735 | { |
| 736 | /* Replace fname and fd with section content. */ |
| 737 | char *fnname = alloca (strlen (fname) + strlen (elf_input_section) + 2); |
| 738 | sprintf (fnname, "%s:%s", fname, elf_input_section); |
| 739 | fd = open_input_section (fd); |
| 740 | if (fd == -1) |
| 741 | { |
| 742 | error (0, 0, gettext ("No such section '%s' in '%s'"), |
| 743 | elf_input_section, fname); |
| 744 | return; |
| 745 | } |
| 746 | fname = fnname; |
| 747 | } |
| 748 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 749 | /* Duplicate an fd for dwfl_report_offline to swallow. */ |
| 750 | int dwfl_fd = dup (fd); |
| 751 | if (unlikely (dwfl_fd < 0)) |
| 752 | error (EXIT_FAILURE, errno, "dup"); |
| 753 | |
| 754 | /* Use libdwfl in a trivial way to open the libdw handle for us. |
| 755 | This takes care of applying relocations to DWARF data in ET_REL files. */ |
| 756 | static const Dwfl_Callbacks callbacks = |
| 757 | { |
| 758 | .section_address = dwfl_offline_section_address, |
| 759 | .find_debuginfo = find_no_debuginfo |
| 760 | }; |
| 761 | Dwfl *dwfl = dwfl_begin (&callbacks); |
| 762 | if (likely (dwfl != NULL)) |
| 763 | /* Let 0 be the logical address of the file (or first in archive). */ |
| 764 | dwfl->offline_next_address = 0; |
| 765 | if (dwfl_report_offline (dwfl, fname, fname, dwfl_fd) == NULL) |
| 766 | { |
| 767 | struct stat64 st; |
| 768 | if (fstat64 (dwfl_fd, &st) != 0) |
| 769 | error (0, errno, gettext ("cannot stat input file")); |
| 770 | else if (unlikely (st.st_size == 0)) |
| 771 | error (0, 0, gettext ("input file is empty")); |
| 772 | else |
| 773 | error (0, 0, gettext ("failed reading '%s': %s"), |
| 774 | fname, dwfl_errmsg (-1)); |
| 775 | close (dwfl_fd); /* Consumed on success, not on failure. */ |
| 776 | } |
| 777 | else |
| 778 | { |
| 779 | dwfl_report_end (dwfl, NULL, NULL); |
| 780 | |
| 781 | if (only_one) |
| 782 | { |
| 783 | /* Clear ONLY_ONE if we have multiple modules, from an archive. */ |
| 784 | bool seen = false; |
| 785 | only_one = dwfl_getmodules (dwfl, &count_dwflmod, &seen, 0) == 0; |
| 786 | } |
| 787 | |
| 788 | /* Process the one or more modules gleaned from this file. */ |
| 789 | struct process_dwflmod_args a = { .fd = fd, .only_one = only_one }; |
| 790 | dwfl_getmodules (dwfl, &process_dwflmod, &a, 0); |
| 791 | } |
| 792 | dwfl_end (dwfl); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 793 | |
| 794 | /* Need to close the replaced fd if we created it. Caller takes |
| 795 | care of original. */ |
| 796 | if (elf_input_section != NULL) |
| 797 | close (fd); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 798 | } |
| 799 | |
| 800 | |
| 801 | /* Process one ELF file. */ |
| 802 | static void |
| 803 | process_elf_file (Dwfl_Module *dwflmod, int fd) |
| 804 | { |
| 805 | GElf_Addr dwflbias; |
| 806 | Elf *elf = dwfl_module_getelf (dwflmod, &dwflbias); |
| 807 | |
| 808 | GElf_Ehdr ehdr_mem; |
| 809 | GElf_Ehdr *ehdr = gelf_getehdr (elf, &ehdr_mem); |
| 810 | |
| 811 | if (ehdr == NULL) |
| 812 | { |
| 813 | elf_error: |
| 814 | error (0, 0, gettext ("cannot read ELF header: %s"), elf_errmsg (-1)); |
| 815 | return; |
| 816 | } |
| 817 | |
| 818 | Ebl *ebl = ebl_openbackend (elf); |
| 819 | if (unlikely (ebl == NULL)) |
| 820 | { |
| 821 | ebl_error: |
| 822 | error (0, errno, gettext ("cannot create EBL handle")); |
| 823 | return; |
| 824 | } |
| 825 | |
| 826 | /* Determine the number of sections. */ |
| 827 | if (unlikely (elf_getshdrnum (ebl->elf, &shnum) < 0)) |
| 828 | error (EXIT_FAILURE, 0, |
| 829 | gettext ("cannot determine number of sections: %s"), |
| 830 | elf_errmsg (-1)); |
| 831 | |
| 832 | /* Determine the number of phdrs. */ |
| 833 | if (unlikely (elf_getphdrnum (ebl->elf, &phnum) < 0)) |
| 834 | error (EXIT_FAILURE, 0, |
| 835 | gettext ("cannot determine number of program headers: %s"), |
| 836 | elf_errmsg (-1)); |
| 837 | |
| 838 | /* For an ET_REL file, libdwfl has adjusted the in-core shdrs |
| 839 | and may have applied relocation to some sections. |
| 840 | So we need to get a fresh Elf handle on the file to display those. */ |
| 841 | bool print_unrelocated = (print_section_header |
| 842 | || print_relocations |
| 843 | || dump_data_sections != NULL |
| 844 | || print_notes); |
| 845 | |
| 846 | Elf *pure_elf = NULL; |
| 847 | Ebl *pure_ebl = ebl; |
| 848 | if (ehdr->e_type == ET_REL && print_unrelocated) |
| 849 | { |
| 850 | /* Read the file afresh. */ |
| 851 | off64_t aroff = elf_getaroff (elf); |
| 852 | pure_elf = elf_begin (fd, ELF_C_READ_MMAP, NULL); |
| 853 | if (aroff > 0) |
| 854 | { |
| 855 | /* Archive member. */ |
| 856 | (void) elf_rand (pure_elf, aroff); |
| 857 | Elf *armem = elf_begin (-1, ELF_C_READ_MMAP, pure_elf); |
| 858 | elf_end (pure_elf); |
| 859 | pure_elf = armem; |
| 860 | } |
| 861 | if (pure_elf == NULL) |
| 862 | goto elf_error; |
| 863 | pure_ebl = ebl_openbackend (pure_elf); |
| 864 | if (pure_ebl == NULL) |
| 865 | goto ebl_error; |
| 866 | } |
| 867 | |
| 868 | if (print_file_header) |
| 869 | print_ehdr (ebl, ehdr); |
| 870 | if (print_section_header) |
| 871 | print_shdr (pure_ebl, ehdr); |
| 872 | if (print_program_header) |
| 873 | print_phdr (ebl, ehdr); |
| 874 | if (print_section_groups) |
| 875 | print_scngrp (ebl); |
| 876 | if (print_dynamic_table) |
| 877 | print_dynamic (ebl); |
| 878 | if (print_relocations) |
| 879 | print_relocs (pure_ebl, ehdr); |
| 880 | if (print_histogram) |
| 881 | handle_hash (ebl); |
| 882 | if (print_symbol_table) |
| 883 | print_symtab (ebl, SHT_DYNSYM); |
| 884 | if (print_version_info) |
| 885 | print_verinfo (ebl); |
| 886 | if (print_symbol_table) |
| 887 | print_symtab (ebl, SHT_SYMTAB); |
| 888 | if (print_arch) |
| 889 | print_liblist (ebl); |
| 890 | if (print_arch) |
| 891 | print_attributes (ebl, ehdr); |
| 892 | if (dump_data_sections != NULL) |
| 893 | dump_data (pure_ebl); |
| 894 | if (string_sections != NULL) |
| 895 | dump_strings (ebl); |
| 896 | if ((print_debug_sections | implicit_debug_sections) != 0) |
| 897 | print_debug (dwflmod, ebl, ehdr); |
| 898 | if (print_notes) |
| 899 | handle_notes (pure_ebl, ehdr); |
| 900 | if (print_string_sections) |
| 901 | print_strings (ebl); |
| 902 | |
| 903 | ebl_closebackend (ebl); |
| 904 | |
| 905 | if (pure_ebl != ebl) |
| 906 | { |
| 907 | ebl_closebackend (pure_ebl); |
| 908 | elf_end (pure_elf); |
| 909 | } |
| 910 | } |
| 911 | |
| 912 | |
| 913 | /* Print file type. */ |
| 914 | static void |
| 915 | print_file_type (unsigned short int e_type) |
| 916 | { |
| 917 | if (likely (e_type <= ET_CORE)) |
| 918 | { |
| 919 | static const char *const knowntypes[] = |
| 920 | { |
| 921 | N_("NONE (None)"), |
| 922 | N_("REL (Relocatable file)"), |
| 923 | N_("EXEC (Executable file)"), |
| 924 | N_("DYN (Shared object file)"), |
| 925 | N_("CORE (Core file)") |
| 926 | }; |
| 927 | puts (gettext (knowntypes[e_type])); |
| 928 | } |
| 929 | else if (e_type >= ET_LOOS && e_type <= ET_HIOS) |
| 930 | printf (gettext ("OS Specific: (%x)\n"), e_type); |
| 931 | else if (e_type >= ET_LOPROC /* && e_type <= ET_HIPROC always true */) |
| 932 | printf (gettext ("Processor Specific: (%x)\n"), e_type); |
| 933 | else |
| 934 | puts ("???"); |
| 935 | } |
| 936 | |
| 937 | |
| 938 | /* Print ELF header. */ |
| 939 | static void |
| 940 | print_ehdr (Ebl *ebl, GElf_Ehdr *ehdr) |
| 941 | { |
| 942 | fputs_unlocked (gettext ("ELF Header:\n Magic: "), stdout); |
| 943 | for (size_t cnt = 0; cnt < EI_NIDENT; ++cnt) |
| 944 | printf (" %02hhx", ehdr->e_ident[cnt]); |
| 945 | |
| 946 | printf (gettext ("\n Class: %s\n"), |
| 947 | ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? "ELF32" |
| 948 | : ehdr->e_ident[EI_CLASS] == ELFCLASS64 ? "ELF64" |
| 949 | : "\?\?\?"); |
| 950 | |
| 951 | printf (gettext (" Data: %s\n"), |
| 952 | ehdr->e_ident[EI_DATA] == ELFDATA2LSB |
| 953 | ? "2's complement, little endian" |
| 954 | : ehdr->e_ident[EI_DATA] == ELFDATA2MSB |
| 955 | ? "2's complement, big endian" : "\?\?\?"); |
| 956 | |
| 957 | printf (gettext (" Ident Version: %hhd %s\n"), |
| 958 | ehdr->e_ident[EI_VERSION], |
| 959 | ehdr->e_ident[EI_VERSION] == EV_CURRENT ? gettext ("(current)") |
| 960 | : "(\?\?\?)"); |
| 961 | |
| 962 | char buf[512]; |
| 963 | printf (gettext (" OS/ABI: %s\n"), |
| 964 | ebl_osabi_name (ebl, ehdr->e_ident[EI_OSABI], buf, sizeof (buf))); |
| 965 | |
| 966 | printf (gettext (" ABI Version: %hhd\n"), |
| 967 | ehdr->e_ident[EI_ABIVERSION]); |
| 968 | |
| 969 | fputs_unlocked (gettext (" Type: "), stdout); |
| 970 | print_file_type (ehdr->e_type); |
| 971 | |
| 972 | printf (gettext (" Machine: %s\n"), ebl->name); |
| 973 | |
| 974 | printf (gettext (" Version: %d %s\n"), |
| 975 | ehdr->e_version, |
| 976 | ehdr->e_version == EV_CURRENT ? gettext ("(current)") : "(\?\?\?)"); |
| 977 | |
| 978 | printf (gettext (" Entry point address: %#" PRIx64 "\n"), |
| 979 | ehdr->e_entry); |
| 980 | |
| 981 | printf (gettext (" Start of program headers: %" PRId64 " %s\n"), |
| 982 | ehdr->e_phoff, gettext ("(bytes into file)")); |
| 983 | |
| 984 | printf (gettext (" Start of section headers: %" PRId64 " %s\n"), |
| 985 | ehdr->e_shoff, gettext ("(bytes into file)")); |
| 986 | |
| 987 | printf (gettext (" Flags: %s\n"), |
| 988 | ebl_machine_flag_name (ebl, ehdr->e_flags, buf, sizeof (buf))); |
| 989 | |
| 990 | printf (gettext (" Size of this header: %" PRId16 " %s\n"), |
| 991 | ehdr->e_ehsize, gettext ("(bytes)")); |
| 992 | |
| 993 | printf (gettext (" Size of program header entries: %" PRId16 " %s\n"), |
| 994 | ehdr->e_phentsize, gettext ("(bytes)")); |
| 995 | |
| 996 | printf (gettext (" Number of program headers entries: %" PRId16), |
| 997 | ehdr->e_phnum); |
| 998 | if (ehdr->e_phnum == PN_XNUM) |
| 999 | { |
| 1000 | GElf_Shdr shdr_mem; |
| 1001 | GElf_Shdr *shdr = gelf_getshdr (elf_getscn (ebl->elf, 0), &shdr_mem); |
| 1002 | if (shdr != NULL) |
| 1003 | printf (gettext (" (%" PRIu32 " in [0].sh_info)"), |
| 1004 | (uint32_t) shdr->sh_info); |
| 1005 | else |
| 1006 | fputs_unlocked (gettext (" ([0] not available)"), stdout); |
| 1007 | } |
| 1008 | fputc_unlocked ('\n', stdout); |
| 1009 | |
| 1010 | printf (gettext (" Size of section header entries: %" PRId16 " %s\n"), |
| 1011 | ehdr->e_shentsize, gettext ("(bytes)")); |
| 1012 | |
| 1013 | printf (gettext (" Number of section headers entries: %" PRId16), |
| 1014 | ehdr->e_shnum); |
| 1015 | if (ehdr->e_shnum == 0) |
| 1016 | { |
| 1017 | GElf_Shdr shdr_mem; |
| 1018 | GElf_Shdr *shdr = gelf_getshdr (elf_getscn (ebl->elf, 0), &shdr_mem); |
| 1019 | if (shdr != NULL) |
| 1020 | printf (gettext (" (%" PRIu32 " in [0].sh_size)"), |
| 1021 | (uint32_t) shdr->sh_size); |
| 1022 | else |
| 1023 | fputs_unlocked (gettext (" ([0] not available)"), stdout); |
| 1024 | } |
| 1025 | fputc_unlocked ('\n', stdout); |
| 1026 | |
| 1027 | if (unlikely (ehdr->e_shstrndx == SHN_XINDEX)) |
| 1028 | { |
| 1029 | GElf_Shdr shdr_mem; |
| 1030 | GElf_Shdr *shdr = gelf_getshdr (elf_getscn (ebl->elf, 0), &shdr_mem); |
| 1031 | if (shdr != NULL) |
| 1032 | /* We managed to get the zeroth section. */ |
| 1033 | snprintf (buf, sizeof (buf), gettext (" (%" PRIu32 " in [0].sh_link)"), |
| 1034 | (uint32_t) shdr->sh_link); |
| 1035 | else |
| 1036 | { |
| 1037 | strncpy (buf, gettext (" ([0] not available)"), sizeof (buf)); |
| 1038 | buf[sizeof (buf) - 1] = '\0'; |
| 1039 | } |
| 1040 | |
| 1041 | printf (gettext (" Section header string table index: XINDEX%s\n\n"), |
| 1042 | buf); |
| 1043 | } |
| 1044 | else |
| 1045 | printf (gettext (" Section header string table index: %" PRId16 "\n\n"), |
| 1046 | ehdr->e_shstrndx); |
| 1047 | } |
| 1048 | |
| 1049 | |
| 1050 | static const char * |
| 1051 | get_visibility_type (int value) |
| 1052 | { |
| 1053 | switch (value) |
| 1054 | { |
| 1055 | case STV_DEFAULT: |
| 1056 | return "DEFAULT"; |
| 1057 | case STV_INTERNAL: |
| 1058 | return "INTERNAL"; |
| 1059 | case STV_HIDDEN: |
| 1060 | return "HIDDEN"; |
| 1061 | case STV_PROTECTED: |
| 1062 | return "PROTECTED"; |
| 1063 | default: |
| 1064 | return "???"; |
| 1065 | } |
| 1066 | } |
| 1067 | |
| 1068 | |
| 1069 | /* Print the section headers. */ |
| 1070 | static void |
| 1071 | print_shdr (Ebl *ebl, GElf_Ehdr *ehdr) |
| 1072 | { |
| 1073 | size_t cnt; |
| 1074 | size_t shstrndx; |
| 1075 | |
| 1076 | if (! print_file_header) |
| 1077 | printf (gettext ("\ |
| 1078 | There are %d section headers, starting at offset %#" PRIx64 ":\n\ |
| 1079 | \n"), |
| 1080 | ehdr->e_shnum, ehdr->e_shoff); |
| 1081 | |
| 1082 | /* Get the section header string table index. */ |
| 1083 | if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0)) |
| 1084 | error (EXIT_FAILURE, 0, |
| 1085 | gettext ("cannot get section header string table index")); |
| 1086 | |
| 1087 | puts (gettext ("Section Headers:")); |
| 1088 | |
| 1089 | if (ehdr->e_ident[EI_CLASS] == ELFCLASS32) |
| 1090 | puts (gettext ("[Nr] Name Type Addr Off Size ES Flags Lk Inf Al")); |
| 1091 | else |
| 1092 | puts (gettext ("[Nr] Name Type Addr Off Size ES Flags Lk Inf Al")); |
| 1093 | |
| 1094 | for (cnt = 0; cnt < shnum; ++cnt) |
| 1095 | { |
| 1096 | Elf_Scn *scn = elf_getscn (ebl->elf, cnt); |
| 1097 | |
| 1098 | if (unlikely (scn == NULL)) |
| 1099 | error (EXIT_FAILURE, 0, gettext ("cannot get section: %s"), |
| 1100 | elf_errmsg (-1)); |
| 1101 | |
| 1102 | /* Get the section header. */ |
| 1103 | GElf_Shdr shdr_mem; |
| 1104 | GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); |
| 1105 | if (unlikely (shdr == NULL)) |
| 1106 | error (EXIT_FAILURE, 0, gettext ("cannot get section header: %s"), |
| 1107 | elf_errmsg (-1)); |
| 1108 | |
| 1109 | char flagbuf[20]; |
| 1110 | char *cp = flagbuf; |
| 1111 | if (shdr->sh_flags & SHF_WRITE) |
| 1112 | *cp++ = 'W'; |
| 1113 | if (shdr->sh_flags & SHF_ALLOC) |
| 1114 | *cp++ = 'A'; |
| 1115 | if (shdr->sh_flags & SHF_EXECINSTR) |
| 1116 | *cp++ = 'X'; |
| 1117 | if (shdr->sh_flags & SHF_MERGE) |
| 1118 | *cp++ = 'M'; |
| 1119 | if (shdr->sh_flags & SHF_STRINGS) |
| 1120 | *cp++ = 'S'; |
| 1121 | if (shdr->sh_flags & SHF_INFO_LINK) |
| 1122 | *cp++ = 'I'; |
| 1123 | if (shdr->sh_flags & SHF_LINK_ORDER) |
| 1124 | *cp++ = 'L'; |
| 1125 | if (shdr->sh_flags & SHF_OS_NONCONFORMING) |
| 1126 | *cp++ = 'N'; |
| 1127 | if (shdr->sh_flags & SHF_GROUP) |
| 1128 | *cp++ = 'G'; |
| 1129 | if (shdr->sh_flags & SHF_TLS) |
| 1130 | *cp++ = 'T'; |
| 1131 | if (shdr->sh_flags & SHF_ORDERED) |
| 1132 | *cp++ = 'O'; |
| 1133 | if (shdr->sh_flags & SHF_EXCLUDE) |
| 1134 | *cp++ = 'E'; |
| 1135 | *cp = '\0'; |
| 1136 | |
| 1137 | char buf[128]; |
| 1138 | printf ("[%2zu] %-20s %-12s %0*" PRIx64 " %0*" PRIx64 " %0*" PRIx64 |
| 1139 | " %2" PRId64 " %-5s %2" PRId32 " %3" PRId32 |
| 1140 | " %2" PRId64 "\n", |
| 1141 | cnt, |
| 1142 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name) |
| 1143 | ?: "<corrupt>", |
| 1144 | ebl_section_type_name (ebl, shdr->sh_type, buf, sizeof (buf)), |
| 1145 | ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 8 : 16, shdr->sh_addr, |
| 1146 | ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 6 : 8, shdr->sh_offset, |
| 1147 | ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 6 : 8, shdr->sh_size, |
| 1148 | shdr->sh_entsize, flagbuf, shdr->sh_link, shdr->sh_info, |
| 1149 | shdr->sh_addralign); |
| 1150 | } |
| 1151 | |
| 1152 | fputc_unlocked ('\n', stdout); |
| 1153 | } |
| 1154 | |
| 1155 | |
| 1156 | /* Print the program header. */ |
| 1157 | static void |
| 1158 | print_phdr (Ebl *ebl, GElf_Ehdr *ehdr) |
| 1159 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 1160 | if (phnum == 0) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 1161 | /* No program header, this is OK in relocatable objects. */ |
| 1162 | return; |
| 1163 | |
| 1164 | puts (gettext ("Program Headers:")); |
| 1165 | if (ehdr->e_ident[EI_CLASS] == ELFCLASS32) |
| 1166 | puts (gettext ("\ |
| 1167 | Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align")); |
| 1168 | else |
| 1169 | puts (gettext ("\ |
| 1170 | Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align")); |
| 1171 | |
| 1172 | /* Process all program headers. */ |
| 1173 | bool has_relro = false; |
| 1174 | GElf_Addr relro_from = 0; |
| 1175 | GElf_Addr relro_to = 0; |
| 1176 | for (size_t cnt = 0; cnt < phnum; ++cnt) |
| 1177 | { |
| 1178 | char buf[128]; |
| 1179 | GElf_Phdr mem; |
| 1180 | GElf_Phdr *phdr = gelf_getphdr (ebl->elf, cnt, &mem); |
| 1181 | |
| 1182 | /* If for some reason the header cannot be returned show this. */ |
| 1183 | if (unlikely (phdr == NULL)) |
| 1184 | { |
| 1185 | puts (" ???"); |
| 1186 | continue; |
| 1187 | } |
| 1188 | |
| 1189 | printf (" %-14s 0x%06" PRIx64 " 0x%0*" PRIx64 " 0x%0*" PRIx64 |
| 1190 | " 0x%06" PRIx64 " 0x%06" PRIx64 " %c%c%c 0x%" PRIx64 "\n", |
| 1191 | ebl_segment_type_name (ebl, phdr->p_type, buf, sizeof (buf)), |
| 1192 | phdr->p_offset, |
| 1193 | ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 8 : 16, phdr->p_vaddr, |
| 1194 | ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 8 : 16, phdr->p_paddr, |
| 1195 | phdr->p_filesz, |
| 1196 | phdr->p_memsz, |
| 1197 | phdr->p_flags & PF_R ? 'R' : ' ', |
| 1198 | phdr->p_flags & PF_W ? 'W' : ' ', |
| 1199 | phdr->p_flags & PF_X ? 'E' : ' ', |
| 1200 | phdr->p_align); |
| 1201 | |
| 1202 | if (phdr->p_type == PT_INTERP) |
| 1203 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 1204 | /* If we are sure the file offset is valid then we can show |
| 1205 | the user the name of the interpreter. We check whether |
| 1206 | there is a section at the file offset. Normally there |
| 1207 | would be a section called ".interp". But in separate |
| 1208 | .debug files it is a NOBITS section (and so doesn't match |
| 1209 | with gelf_offscn). Which probably means the offset is |
| 1210 | not valid another reason could be because the ELF file |
| 1211 | just doesn't contain any section headers, in that case |
| 1212 | just play it safe and don't display anything. */ |
| 1213 | |
| 1214 | Elf_Scn *scn = gelf_offscn (ebl->elf, phdr->p_offset); |
| 1215 | GElf_Shdr shdr_mem; |
| 1216 | GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); |
| 1217 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 1218 | size_t maxsize; |
| 1219 | char *filedata = elf_rawfile (ebl->elf, &maxsize); |
| 1220 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 1221 | if (shdr != NULL && shdr->sh_type == SHT_PROGBITS |
| 1222 | && filedata != NULL && phdr->p_offset < maxsize |
| 1223 | && phdr->p_filesz <= maxsize - phdr->p_offset |
| 1224 | && memchr (filedata + phdr->p_offset, '\0', |
| 1225 | phdr->p_filesz) != NULL) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 1226 | printf (gettext ("\t[Requesting program interpreter: %s]\n"), |
| 1227 | filedata + phdr->p_offset); |
| 1228 | } |
| 1229 | else if (phdr->p_type == PT_GNU_RELRO) |
| 1230 | { |
| 1231 | has_relro = true; |
| 1232 | relro_from = phdr->p_vaddr; |
| 1233 | relro_to = relro_from + phdr->p_memsz; |
| 1234 | } |
| 1235 | } |
| 1236 | |
| 1237 | if (ehdr->e_shnum == 0) |
| 1238 | /* No sections in the file. Punt. */ |
| 1239 | return; |
| 1240 | |
| 1241 | /* Get the section header string table index. */ |
| 1242 | size_t shstrndx; |
| 1243 | if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0)) |
| 1244 | error (EXIT_FAILURE, 0, |
| 1245 | gettext ("cannot get section header string table index")); |
| 1246 | |
| 1247 | puts (gettext ("\n Section to Segment mapping:\n Segment Sections...")); |
| 1248 | |
| 1249 | for (size_t cnt = 0; cnt < phnum; ++cnt) |
| 1250 | { |
| 1251 | /* Print the segment number. */ |
| 1252 | printf (" %2.2zu ", cnt); |
| 1253 | |
| 1254 | GElf_Phdr phdr_mem; |
| 1255 | GElf_Phdr *phdr = gelf_getphdr (ebl->elf, cnt, &phdr_mem); |
| 1256 | /* This must not happen. */ |
| 1257 | if (unlikely (phdr == NULL)) |
| 1258 | error (EXIT_FAILURE, 0, gettext ("cannot get program header: %s"), |
| 1259 | elf_errmsg (-1)); |
| 1260 | |
| 1261 | /* Iterate over the sections. */ |
| 1262 | bool in_relro = false; |
| 1263 | bool in_ro = false; |
| 1264 | for (size_t inner = 1; inner < shnum; ++inner) |
| 1265 | { |
| 1266 | Elf_Scn *scn = elf_getscn (ebl->elf, inner); |
| 1267 | /* This should not happen. */ |
| 1268 | if (unlikely (scn == NULL)) |
| 1269 | error (EXIT_FAILURE, 0, gettext ("cannot get section: %s"), |
| 1270 | elf_errmsg (-1)); |
| 1271 | |
| 1272 | /* Get the section header. */ |
| 1273 | GElf_Shdr shdr_mem; |
| 1274 | GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); |
| 1275 | if (unlikely (shdr == NULL)) |
| 1276 | error (EXIT_FAILURE, 0, |
| 1277 | gettext ("cannot get section header: %s"), |
| 1278 | elf_errmsg (-1)); |
| 1279 | |
| 1280 | if (shdr->sh_size > 0 |
| 1281 | /* Compare allocated sections by VMA, unallocated |
| 1282 | sections by file offset. */ |
| 1283 | && (shdr->sh_flags & SHF_ALLOC |
| 1284 | ? (shdr->sh_addr >= phdr->p_vaddr |
| 1285 | && (shdr->sh_addr + shdr->sh_size |
| 1286 | <= phdr->p_vaddr + phdr->p_memsz)) |
| 1287 | : (shdr->sh_offset >= phdr->p_offset |
| 1288 | && (shdr->sh_offset + shdr->sh_size |
| 1289 | <= phdr->p_offset + phdr->p_filesz)))) |
| 1290 | { |
| 1291 | if (has_relro && !in_relro |
| 1292 | && shdr->sh_addr >= relro_from |
| 1293 | && shdr->sh_addr + shdr->sh_size <= relro_to) |
| 1294 | { |
| 1295 | fputs_unlocked (" [RELRO:", stdout); |
| 1296 | in_relro = true; |
| 1297 | } |
| 1298 | else if (has_relro && in_relro && shdr->sh_addr >= relro_to) |
| 1299 | { |
| 1300 | fputs_unlocked ("]", stdout); |
| 1301 | in_relro = false; |
| 1302 | } |
| 1303 | else if (has_relro && in_relro |
| 1304 | && shdr->sh_addr + shdr->sh_size > relro_to) |
| 1305 | fputs_unlocked ("] <RELRO:", stdout); |
| 1306 | else if (phdr->p_type == PT_LOAD && (phdr->p_flags & PF_W) == 0) |
| 1307 | { |
| 1308 | if (!in_ro) |
| 1309 | { |
| 1310 | fputs_unlocked (" [RO:", stdout); |
| 1311 | in_ro = true; |
| 1312 | } |
| 1313 | } |
| 1314 | else |
| 1315 | { |
| 1316 | /* Determine the segment this section is part of. */ |
| 1317 | size_t cnt2; |
| 1318 | GElf_Phdr *phdr2 = NULL; |
| 1319 | for (cnt2 = 0; cnt2 < phnum; ++cnt2) |
| 1320 | { |
| 1321 | GElf_Phdr phdr2_mem; |
| 1322 | phdr2 = gelf_getphdr (ebl->elf, cnt2, &phdr2_mem); |
| 1323 | |
| 1324 | if (phdr2 != NULL && phdr2->p_type == PT_LOAD |
| 1325 | && shdr->sh_addr >= phdr2->p_vaddr |
| 1326 | && (shdr->sh_addr + shdr->sh_size |
| 1327 | <= phdr2->p_vaddr + phdr2->p_memsz)) |
| 1328 | break; |
| 1329 | } |
| 1330 | |
| 1331 | if (cnt2 < phnum) |
| 1332 | { |
| 1333 | if ((phdr2->p_flags & PF_W) == 0 && !in_ro) |
| 1334 | { |
| 1335 | fputs_unlocked (" [RO:", stdout); |
| 1336 | in_ro = true; |
| 1337 | } |
| 1338 | else if ((phdr2->p_flags & PF_W) != 0 && in_ro) |
| 1339 | { |
| 1340 | fputs_unlocked ("]", stdout); |
| 1341 | in_ro = false; |
| 1342 | } |
| 1343 | } |
| 1344 | } |
| 1345 | |
| 1346 | printf (" %s", |
| 1347 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name)); |
| 1348 | |
| 1349 | /* Signal that this sectin is only partially covered. */ |
| 1350 | if (has_relro && in_relro |
| 1351 | && shdr->sh_addr + shdr->sh_size > relro_to) |
| 1352 | { |
| 1353 | fputs_unlocked (">", stdout); |
| 1354 | in_relro = false; |
| 1355 | } |
| 1356 | } |
| 1357 | } |
| 1358 | if (in_relro || in_ro) |
| 1359 | fputs_unlocked ("]", stdout); |
| 1360 | |
| 1361 | /* Finish the line. */ |
| 1362 | fputc_unlocked ('\n', stdout); |
| 1363 | } |
| 1364 | } |
| 1365 | |
| 1366 | |
| 1367 | static const char * |
| 1368 | section_name (Ebl *ebl, GElf_Ehdr *ehdr, GElf_Shdr *shdr) |
| 1369 | { |
| 1370 | return elf_strptr (ebl->elf, ehdr->e_shstrndx, shdr->sh_name) ?: "???"; |
| 1371 | } |
| 1372 | |
| 1373 | |
| 1374 | static void |
| 1375 | handle_scngrp (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr) |
| 1376 | { |
| 1377 | /* Get the data of the section. */ |
| 1378 | Elf_Data *data = elf_getdata (scn, NULL); |
| 1379 | |
| 1380 | Elf_Scn *symscn = elf_getscn (ebl->elf, shdr->sh_link); |
| 1381 | GElf_Shdr symshdr_mem; |
| 1382 | GElf_Shdr *symshdr = gelf_getshdr (symscn, &symshdr_mem); |
| 1383 | Elf_Data *symdata = elf_getdata (symscn, NULL); |
| 1384 | |
| 1385 | if (data == NULL || data->d_size < sizeof (Elf32_Word) || symshdr == NULL |
| 1386 | || symdata == NULL) |
| 1387 | return; |
| 1388 | |
| 1389 | /* Get the section header string table index. */ |
| 1390 | size_t shstrndx; |
| 1391 | if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0)) |
| 1392 | error (EXIT_FAILURE, 0, |
| 1393 | gettext ("cannot get section header string table index")); |
| 1394 | |
| 1395 | Elf32_Word *grpref = (Elf32_Word *) data->d_buf; |
| 1396 | |
| 1397 | GElf_Sym sym_mem; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 1398 | GElf_Sym *sym = gelf_getsym (symdata, shdr->sh_info, &sym_mem); |
| 1399 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 1400 | printf ((grpref[0] & GRP_COMDAT) |
| 1401 | ? ngettext ("\ |
| 1402 | \nCOMDAT section group [%2zu] '%s' with signature '%s' contains %zu entry:\n", |
| 1403 | "\ |
| 1404 | \nCOMDAT section group [%2zu] '%s' with signature '%s' contains %zu entries:\n", |
| 1405 | data->d_size / sizeof (Elf32_Word) - 1) |
| 1406 | : ngettext ("\ |
| 1407 | \nSection group [%2zu] '%s' with signature '%s' contains %zu entry:\n", "\ |
| 1408 | \nSection group [%2zu] '%s' with signature '%s' contains %zu entries:\n", |
| 1409 | data->d_size / sizeof (Elf32_Word) - 1), |
| 1410 | elf_ndxscn (scn), |
| 1411 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name), |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 1412 | (sym == NULL ? NULL |
| 1413 | : elf_strptr (ebl->elf, symshdr->sh_link, sym->st_name)) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 1414 | ?: gettext ("<INVALID SYMBOL>"), |
| 1415 | data->d_size / sizeof (Elf32_Word) - 1); |
| 1416 | |
| 1417 | for (size_t cnt = 1; cnt < data->d_size / sizeof (Elf32_Word); ++cnt) |
| 1418 | { |
| 1419 | GElf_Shdr grpshdr_mem; |
| 1420 | GElf_Shdr *grpshdr = gelf_getshdr (elf_getscn (ebl->elf, grpref[cnt]), |
| 1421 | &grpshdr_mem); |
| 1422 | |
| 1423 | const char *str; |
| 1424 | printf (" [%2u] %s\n", |
| 1425 | grpref[cnt], |
| 1426 | grpshdr != NULL |
| 1427 | && (str = elf_strptr (ebl->elf, shstrndx, grpshdr->sh_name)) |
| 1428 | ? str : gettext ("<INVALID SECTION>")); |
| 1429 | } |
| 1430 | } |
| 1431 | |
| 1432 | |
| 1433 | static void |
| 1434 | print_scngrp (Ebl *ebl) |
| 1435 | { |
| 1436 | /* Find all relocation sections and handle them. */ |
| 1437 | Elf_Scn *scn = NULL; |
| 1438 | |
| 1439 | while ((scn = elf_nextscn (ebl->elf, scn)) != NULL) |
| 1440 | { |
| 1441 | /* Handle the section if it is a symbol table. */ |
| 1442 | GElf_Shdr shdr_mem; |
| 1443 | GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); |
| 1444 | |
| 1445 | if (shdr != NULL && shdr->sh_type == SHT_GROUP) |
| 1446 | handle_scngrp (ebl, scn, shdr); |
| 1447 | } |
| 1448 | } |
| 1449 | |
| 1450 | |
| 1451 | static const struct flags |
| 1452 | { |
| 1453 | int mask; |
| 1454 | const char *str; |
| 1455 | } dt_flags[] = |
| 1456 | { |
| 1457 | { DF_ORIGIN, "ORIGIN" }, |
| 1458 | { DF_SYMBOLIC, "SYMBOLIC" }, |
| 1459 | { DF_TEXTREL, "TEXTREL" }, |
| 1460 | { DF_BIND_NOW, "BIND_NOW" }, |
| 1461 | { DF_STATIC_TLS, "STATIC_TLS" } |
| 1462 | }; |
| 1463 | static const int ndt_flags = sizeof (dt_flags) / sizeof (dt_flags[0]); |
| 1464 | |
| 1465 | static const struct flags dt_flags_1[] = |
| 1466 | { |
| 1467 | { DF_1_NOW, "NOW" }, |
| 1468 | { DF_1_GLOBAL, "GLOBAL" }, |
| 1469 | { DF_1_GROUP, "GROUP" }, |
| 1470 | { DF_1_NODELETE, "NODELETE" }, |
| 1471 | { DF_1_LOADFLTR, "LOADFLTR" }, |
| 1472 | { DF_1_INITFIRST, "INITFIRST" }, |
| 1473 | { DF_1_NOOPEN, "NOOPEN" }, |
| 1474 | { DF_1_ORIGIN, "ORIGIN" }, |
| 1475 | { DF_1_DIRECT, "DIRECT" }, |
| 1476 | { DF_1_TRANS, "TRANS" }, |
| 1477 | { DF_1_INTERPOSE, "INTERPOSE" }, |
| 1478 | { DF_1_NODEFLIB, "NODEFLIB" }, |
| 1479 | { DF_1_NODUMP, "NODUMP" }, |
| 1480 | { DF_1_CONFALT, "CONFALT" }, |
| 1481 | { DF_1_ENDFILTEE, "ENDFILTEE" }, |
| 1482 | { DF_1_DISPRELDNE, "DISPRELDNE" }, |
| 1483 | { DF_1_DISPRELPND, "DISPRELPND" }, |
| 1484 | }; |
| 1485 | static const int ndt_flags_1 = sizeof (dt_flags_1) / sizeof (dt_flags_1[0]); |
| 1486 | |
| 1487 | static const struct flags dt_feature_1[] = |
| 1488 | { |
| 1489 | { DTF_1_PARINIT, "PARINIT" }, |
| 1490 | { DTF_1_CONFEXP, "CONFEXP" } |
| 1491 | }; |
| 1492 | static const int ndt_feature_1 = (sizeof (dt_feature_1) |
| 1493 | / sizeof (dt_feature_1[0])); |
| 1494 | |
| 1495 | static const struct flags dt_posflag_1[] = |
| 1496 | { |
| 1497 | { DF_P1_LAZYLOAD, "LAZYLOAD" }, |
| 1498 | { DF_P1_GROUPPERM, "GROUPPERM" } |
| 1499 | }; |
| 1500 | static const int ndt_posflag_1 = (sizeof (dt_posflag_1) |
| 1501 | / sizeof (dt_posflag_1[0])); |
| 1502 | |
| 1503 | |
| 1504 | static void |
| 1505 | print_flags (int class, GElf_Xword d_val, const struct flags *flags, |
| 1506 | int nflags) |
| 1507 | { |
| 1508 | bool first = true; |
| 1509 | int cnt; |
| 1510 | |
| 1511 | for (cnt = 0; cnt < nflags; ++cnt) |
| 1512 | if (d_val & flags[cnt].mask) |
| 1513 | { |
| 1514 | if (!first) |
| 1515 | putchar_unlocked (' '); |
| 1516 | fputs_unlocked (flags[cnt].str, stdout); |
| 1517 | d_val &= ~flags[cnt].mask; |
| 1518 | first = false; |
| 1519 | } |
| 1520 | |
| 1521 | if (d_val != 0) |
| 1522 | { |
| 1523 | if (!first) |
| 1524 | putchar_unlocked (' '); |
| 1525 | printf ("%#0*" PRIx64, class == ELFCLASS32 ? 10 : 18, d_val); |
| 1526 | } |
| 1527 | |
| 1528 | putchar_unlocked ('\n'); |
| 1529 | } |
| 1530 | |
| 1531 | |
| 1532 | static void |
| 1533 | print_dt_flags (int class, GElf_Xword d_val) |
| 1534 | { |
| 1535 | print_flags (class, d_val, dt_flags, ndt_flags); |
| 1536 | } |
| 1537 | |
| 1538 | |
| 1539 | static void |
| 1540 | print_dt_flags_1 (int class, GElf_Xword d_val) |
| 1541 | { |
| 1542 | print_flags (class, d_val, dt_flags_1, ndt_flags_1); |
| 1543 | } |
| 1544 | |
| 1545 | |
| 1546 | static void |
| 1547 | print_dt_feature_1 (int class, GElf_Xword d_val) |
| 1548 | { |
| 1549 | print_flags (class, d_val, dt_feature_1, ndt_feature_1); |
| 1550 | } |
| 1551 | |
| 1552 | |
| 1553 | static void |
| 1554 | print_dt_posflag_1 (int class, GElf_Xword d_val) |
| 1555 | { |
| 1556 | print_flags (class, d_val, dt_posflag_1, ndt_posflag_1); |
| 1557 | } |
| 1558 | |
| 1559 | |
| 1560 | static void |
| 1561 | handle_dynamic (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr) |
| 1562 | { |
| 1563 | int class = gelf_getclass (ebl->elf); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 1564 | GElf_Shdr glink_mem; |
| 1565 | GElf_Shdr *glink; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 1566 | Elf_Data *data; |
| 1567 | size_t cnt; |
| 1568 | size_t shstrndx; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 1569 | size_t sh_entsize; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 1570 | |
| 1571 | /* Get the data of the section. */ |
| 1572 | data = elf_getdata (scn, NULL); |
| 1573 | if (data == NULL) |
| 1574 | return; |
| 1575 | |
| 1576 | /* Get the section header string table index. */ |
| 1577 | if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0)) |
| 1578 | error (EXIT_FAILURE, 0, |
| 1579 | gettext ("cannot get section header string table index")); |
| 1580 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 1581 | sh_entsize = gelf_fsize (ebl->elf, ELF_T_DYN, 1, EV_CURRENT); |
| 1582 | |
| 1583 | glink = gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link), &glink_mem); |
| 1584 | if (glink == NULL) |
| 1585 | error (EXIT_FAILURE, 0, gettext ("invalid sh_link value in section %Zu"), |
| 1586 | elf_ndxscn (scn)); |
| 1587 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 1588 | printf (ngettext ("\ |
| 1589 | \nDynamic segment contains %lu entry:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'\n", |
| 1590 | "\ |
| 1591 | \nDynamic segment contains %lu entries:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'\n", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 1592 | shdr->sh_size / sh_entsize), |
| 1593 | (unsigned long int) (shdr->sh_size / sh_entsize), |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 1594 | class == ELFCLASS32 ? 10 : 18, shdr->sh_addr, |
| 1595 | shdr->sh_offset, |
| 1596 | (int) shdr->sh_link, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 1597 | elf_strptr (ebl->elf, shstrndx, glink->sh_name)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 1598 | fputs_unlocked (gettext (" Type Value\n"), stdout); |
| 1599 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 1600 | for (cnt = 0; cnt < shdr->sh_size / sh_entsize; ++cnt) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 1601 | { |
| 1602 | GElf_Dyn dynmem; |
| 1603 | GElf_Dyn *dyn = gelf_getdyn (data, cnt, &dynmem); |
| 1604 | if (dyn == NULL) |
| 1605 | break; |
| 1606 | |
| 1607 | char buf[64]; |
| 1608 | printf (" %-17s ", |
| 1609 | ebl_dynamic_tag_name (ebl, dyn->d_tag, buf, sizeof (buf))); |
| 1610 | |
| 1611 | switch (dyn->d_tag) |
| 1612 | { |
| 1613 | case DT_NULL: |
| 1614 | case DT_DEBUG: |
| 1615 | case DT_BIND_NOW: |
| 1616 | case DT_TEXTREL: |
| 1617 | /* No further output. */ |
| 1618 | fputc_unlocked ('\n', stdout); |
| 1619 | break; |
| 1620 | |
| 1621 | case DT_NEEDED: |
| 1622 | printf (gettext ("Shared library: [%s]\n"), |
| 1623 | elf_strptr (ebl->elf, shdr->sh_link, dyn->d_un.d_val)); |
| 1624 | break; |
| 1625 | |
| 1626 | case DT_SONAME: |
| 1627 | printf (gettext ("Library soname: [%s]\n"), |
| 1628 | elf_strptr (ebl->elf, shdr->sh_link, dyn->d_un.d_val)); |
| 1629 | break; |
| 1630 | |
| 1631 | case DT_RPATH: |
| 1632 | printf (gettext ("Library rpath: [%s]\n"), |
| 1633 | elf_strptr (ebl->elf, shdr->sh_link, dyn->d_un.d_val)); |
| 1634 | break; |
| 1635 | |
| 1636 | case DT_RUNPATH: |
| 1637 | printf (gettext ("Library runpath: [%s]\n"), |
| 1638 | elf_strptr (ebl->elf, shdr->sh_link, dyn->d_un.d_val)); |
| 1639 | break; |
| 1640 | |
| 1641 | case DT_PLTRELSZ: |
| 1642 | case DT_RELASZ: |
| 1643 | case DT_STRSZ: |
| 1644 | case DT_RELSZ: |
| 1645 | case DT_RELAENT: |
| 1646 | case DT_SYMENT: |
| 1647 | case DT_RELENT: |
| 1648 | case DT_PLTPADSZ: |
| 1649 | case DT_MOVEENT: |
| 1650 | case DT_MOVESZ: |
| 1651 | case DT_INIT_ARRAYSZ: |
| 1652 | case DT_FINI_ARRAYSZ: |
| 1653 | case DT_SYMINSZ: |
| 1654 | case DT_SYMINENT: |
| 1655 | case DT_GNU_CONFLICTSZ: |
| 1656 | case DT_GNU_LIBLISTSZ: |
| 1657 | printf (gettext ("%" PRId64 " (bytes)\n"), dyn->d_un.d_val); |
| 1658 | break; |
| 1659 | |
| 1660 | case DT_VERDEFNUM: |
| 1661 | case DT_VERNEEDNUM: |
| 1662 | case DT_RELACOUNT: |
| 1663 | case DT_RELCOUNT: |
| 1664 | printf ("%" PRId64 "\n", dyn->d_un.d_val); |
| 1665 | break; |
| 1666 | |
| 1667 | case DT_PLTREL:; |
| 1668 | const char *tagname = ebl_dynamic_tag_name (ebl, dyn->d_un.d_val, |
| 1669 | NULL, 0); |
| 1670 | puts (tagname ?: "???"); |
| 1671 | break; |
| 1672 | |
| 1673 | case DT_FLAGS: |
| 1674 | print_dt_flags (class, dyn->d_un.d_val); |
| 1675 | break; |
| 1676 | |
| 1677 | case DT_FLAGS_1: |
| 1678 | print_dt_flags_1 (class, dyn->d_un.d_val); |
| 1679 | break; |
| 1680 | |
| 1681 | case DT_FEATURE_1: |
| 1682 | print_dt_feature_1 (class, dyn->d_un.d_val); |
| 1683 | break; |
| 1684 | |
| 1685 | case DT_POSFLAG_1: |
| 1686 | print_dt_posflag_1 (class, dyn->d_un.d_val); |
| 1687 | break; |
| 1688 | |
| 1689 | default: |
| 1690 | printf ("%#0*" PRIx64 "\n", |
| 1691 | class == ELFCLASS32 ? 10 : 18, dyn->d_un.d_val); |
| 1692 | break; |
| 1693 | } |
| 1694 | } |
| 1695 | } |
| 1696 | |
| 1697 | |
| 1698 | /* Print the dynamic segment. */ |
| 1699 | static void |
| 1700 | print_dynamic (Ebl *ebl) |
| 1701 | { |
| 1702 | for (size_t i = 0; i < phnum; ++i) |
| 1703 | { |
| 1704 | GElf_Phdr phdr_mem; |
| 1705 | GElf_Phdr *phdr = gelf_getphdr (ebl->elf, i, &phdr_mem); |
| 1706 | |
| 1707 | if (phdr != NULL && phdr->p_type == PT_DYNAMIC) |
| 1708 | { |
| 1709 | Elf_Scn *scn = gelf_offscn (ebl->elf, phdr->p_offset); |
| 1710 | GElf_Shdr shdr_mem; |
| 1711 | GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); |
| 1712 | if (shdr != NULL && shdr->sh_type == SHT_DYNAMIC) |
| 1713 | handle_dynamic (ebl, scn, shdr); |
| 1714 | break; |
| 1715 | } |
| 1716 | } |
| 1717 | } |
| 1718 | |
| 1719 | |
| 1720 | /* Print relocations. */ |
| 1721 | static void |
| 1722 | print_relocs (Ebl *ebl, GElf_Ehdr *ehdr) |
| 1723 | { |
| 1724 | /* Find all relocation sections and handle them. */ |
| 1725 | Elf_Scn *scn = NULL; |
| 1726 | |
| 1727 | while ((scn = elf_nextscn (ebl->elf, scn)) != NULL) |
| 1728 | { |
| 1729 | /* Handle the section if it is a symbol table. */ |
| 1730 | GElf_Shdr shdr_mem; |
| 1731 | GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); |
| 1732 | |
| 1733 | if (likely (shdr != NULL)) |
| 1734 | { |
| 1735 | if (shdr->sh_type == SHT_REL) |
| 1736 | handle_relocs_rel (ebl, ehdr, scn, shdr); |
| 1737 | else if (shdr->sh_type == SHT_RELA) |
| 1738 | handle_relocs_rela (ebl, ehdr, scn, shdr); |
| 1739 | } |
| 1740 | } |
| 1741 | } |
| 1742 | |
| 1743 | |
| 1744 | /* Handle a relocation section. */ |
| 1745 | static void |
| 1746 | handle_relocs_rel (Ebl *ebl, GElf_Ehdr *ehdr, Elf_Scn *scn, GElf_Shdr *shdr) |
| 1747 | { |
| 1748 | int class = gelf_getclass (ebl->elf); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 1749 | size_t sh_entsize = gelf_fsize (ebl->elf, ELF_T_REL, 1, EV_CURRENT); |
| 1750 | int nentries = shdr->sh_size / sh_entsize; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 1751 | |
| 1752 | /* Get the data of the section. */ |
| 1753 | Elf_Data *data = elf_getdata (scn, NULL); |
| 1754 | if (data == NULL) |
| 1755 | return; |
| 1756 | |
| 1757 | /* Get the symbol table information. */ |
| 1758 | Elf_Scn *symscn = elf_getscn (ebl->elf, shdr->sh_link); |
| 1759 | GElf_Shdr symshdr_mem; |
| 1760 | GElf_Shdr *symshdr = gelf_getshdr (symscn, &symshdr_mem); |
| 1761 | Elf_Data *symdata = elf_getdata (symscn, NULL); |
| 1762 | |
| 1763 | /* Get the section header of the section the relocations are for. */ |
| 1764 | GElf_Shdr destshdr_mem; |
| 1765 | GElf_Shdr *destshdr = gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_info), |
| 1766 | &destshdr_mem); |
| 1767 | |
| 1768 | if (unlikely (symshdr == NULL || symdata == NULL || destshdr == NULL)) |
| 1769 | { |
| 1770 | printf (gettext ("\nInvalid symbol table at offset %#0" PRIx64 "\n"), |
| 1771 | shdr->sh_offset); |
| 1772 | return; |
| 1773 | } |
| 1774 | |
| 1775 | /* Search for the optional extended section index table. */ |
| 1776 | Elf_Data *xndxdata = NULL; |
| 1777 | int xndxscnidx = elf_scnshndx (scn); |
| 1778 | if (unlikely (xndxscnidx > 0)) |
| 1779 | xndxdata = elf_getdata (elf_getscn (ebl->elf, xndxscnidx), NULL); |
| 1780 | |
| 1781 | /* Get the section header string table index. */ |
| 1782 | size_t shstrndx; |
| 1783 | if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0)) |
| 1784 | error (EXIT_FAILURE, 0, |
| 1785 | gettext ("cannot get section header string table index")); |
| 1786 | |
| 1787 | if (shdr->sh_info != 0) |
| 1788 | printf (ngettext ("\ |
| 1789 | \nRelocation section [%2zu] '%s' for section [%2u] '%s' at offset %#0" PRIx64 " contains %d entry:\n", |
| 1790 | "\ |
| 1791 | \nRelocation section [%2zu] '%s' for section [%2u] '%s' at offset %#0" PRIx64 " contains %d entries:\n", |
| 1792 | nentries), |
| 1793 | elf_ndxscn (scn), |
| 1794 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name), |
| 1795 | (unsigned int) shdr->sh_info, |
| 1796 | elf_strptr (ebl->elf, shstrndx, destshdr->sh_name), |
| 1797 | shdr->sh_offset, |
| 1798 | nentries); |
| 1799 | else |
| 1800 | /* The .rel.dyn section does not refer to a specific section but |
| 1801 | instead of section index zero. Do not try to print a section |
| 1802 | name. */ |
| 1803 | printf (ngettext ("\ |
| 1804 | \nRelocation section [%2u] '%s' at offset %#0" PRIx64 " contains %d entry:\n", |
| 1805 | "\ |
| 1806 | \nRelocation section [%2u] '%s' at offset %#0" PRIx64 " contains %d entries:\n", |
| 1807 | nentries), |
| 1808 | (unsigned int) elf_ndxscn (scn), |
| 1809 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name), |
| 1810 | shdr->sh_offset, |
| 1811 | nentries); |
| 1812 | fputs_unlocked (class == ELFCLASS32 |
| 1813 | ? gettext ("\ |
| 1814 | Offset Type Value Name\n") |
| 1815 | : gettext ("\ |
| 1816 | Offset Type Value Name\n"), |
| 1817 | stdout); |
| 1818 | |
| 1819 | int is_statically_linked = 0; |
| 1820 | for (int cnt = 0; cnt < nentries; ++cnt) |
| 1821 | { |
| 1822 | GElf_Rel relmem; |
| 1823 | GElf_Rel *rel = gelf_getrel (data, cnt, &relmem); |
| 1824 | if (likely (rel != NULL)) |
| 1825 | { |
| 1826 | char buf[128]; |
| 1827 | GElf_Sym symmem; |
| 1828 | Elf32_Word xndx; |
| 1829 | GElf_Sym *sym = gelf_getsymshndx (symdata, xndxdata, |
| 1830 | GELF_R_SYM (rel->r_info), |
| 1831 | &symmem, &xndx); |
| 1832 | if (unlikely (sym == NULL)) |
| 1833 | { |
| 1834 | /* As a special case we have to handle relocations in static |
| 1835 | executables. This only happens for IRELATIVE relocations |
| 1836 | (so far). There is no symbol table. */ |
| 1837 | if (is_statically_linked == 0) |
| 1838 | { |
| 1839 | /* Find the program header and look for a PT_INTERP entry. */ |
| 1840 | is_statically_linked = -1; |
| 1841 | if (ehdr->e_type == ET_EXEC) |
| 1842 | { |
| 1843 | is_statically_linked = 1; |
| 1844 | |
| 1845 | for (size_t inner = 0; inner < phnum; ++inner) |
| 1846 | { |
| 1847 | GElf_Phdr phdr_mem; |
| 1848 | GElf_Phdr *phdr = gelf_getphdr (ebl->elf, inner, |
| 1849 | &phdr_mem); |
| 1850 | if (phdr != NULL && phdr->p_type == PT_INTERP) |
| 1851 | { |
| 1852 | is_statically_linked = -1; |
| 1853 | break; |
| 1854 | } |
| 1855 | } |
| 1856 | } |
| 1857 | } |
| 1858 | |
| 1859 | if (is_statically_linked > 0 && shdr->sh_link == 0) |
| 1860 | printf ("\ |
| 1861 | %#0*" PRIx64 " %-20s %*s %s\n", |
| 1862 | class == ELFCLASS32 ? 10 : 18, rel->r_offset, |
| 1863 | ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info)) |
| 1864 | /* Avoid the leading R_ which isn't carrying any |
| 1865 | information. */ |
| 1866 | ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info), |
| 1867 | buf, sizeof (buf)) + 2 |
| 1868 | : gettext ("<INVALID RELOC>"), |
| 1869 | class == ELFCLASS32 ? 10 : 18, "", |
| 1870 | elf_strptr (ebl->elf, shstrndx, destshdr->sh_name)); |
| 1871 | else |
| 1872 | printf (" %#0*" PRIx64 " %-20s <%s %ld>\n", |
| 1873 | class == ELFCLASS32 ? 10 : 18, rel->r_offset, |
| 1874 | ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info)) |
| 1875 | /* Avoid the leading R_ which isn't carrying any |
| 1876 | information. */ |
| 1877 | ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info), |
| 1878 | buf, sizeof (buf)) + 2 |
| 1879 | : gettext ("<INVALID RELOC>"), |
| 1880 | gettext ("INVALID SYMBOL"), |
| 1881 | (long int) GELF_R_SYM (rel->r_info)); |
| 1882 | } |
| 1883 | else if (GELF_ST_TYPE (sym->st_info) != STT_SECTION) |
| 1884 | printf (" %#0*" PRIx64 " %-20s %#0*" PRIx64 " %s\n", |
| 1885 | class == ELFCLASS32 ? 10 : 18, rel->r_offset, |
| 1886 | likely (ebl_reloc_type_check (ebl, |
| 1887 | GELF_R_TYPE (rel->r_info))) |
| 1888 | /* Avoid the leading R_ which isn't carrying any |
| 1889 | information. */ |
| 1890 | ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info), |
| 1891 | buf, sizeof (buf)) + 2 |
| 1892 | : gettext ("<INVALID RELOC>"), |
| 1893 | class == ELFCLASS32 ? 10 : 18, sym->st_value, |
| 1894 | elf_strptr (ebl->elf, symshdr->sh_link, sym->st_name)); |
| 1895 | else |
| 1896 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 1897 | /* This is a relocation against a STT_SECTION symbol. */ |
| 1898 | GElf_Shdr secshdr_mem; |
| 1899 | GElf_Shdr *secshdr; |
| 1900 | secshdr = gelf_getshdr (elf_getscn (ebl->elf, |
| 1901 | sym->st_shndx == SHN_XINDEX |
| 1902 | ? xndx : sym->st_shndx), |
| 1903 | &secshdr_mem); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 1904 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 1905 | if (unlikely (secshdr == NULL)) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 1906 | printf (" %#0*" PRIx64 " %-20s <%s %ld>\n", |
| 1907 | class == ELFCLASS32 ? 10 : 18, rel->r_offset, |
| 1908 | ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info)) |
| 1909 | /* Avoid the leading R_ which isn't carrying any |
| 1910 | information. */ |
| 1911 | ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info), |
| 1912 | buf, sizeof (buf)) + 2 |
| 1913 | : gettext ("<INVALID RELOC>"), |
| 1914 | gettext ("INVALID SECTION"), |
| 1915 | (long int) (sym->st_shndx == SHN_XINDEX |
| 1916 | ? xndx : sym->st_shndx)); |
| 1917 | else |
| 1918 | printf (" %#0*" PRIx64 " %-20s %#0*" PRIx64 " %s\n", |
| 1919 | class == ELFCLASS32 ? 10 : 18, rel->r_offset, |
| 1920 | ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info)) |
| 1921 | /* Avoid the leading R_ which isn't carrying any |
| 1922 | information. */ |
| 1923 | ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info), |
| 1924 | buf, sizeof (buf)) + 2 |
| 1925 | : gettext ("<INVALID RELOC>"), |
| 1926 | class == ELFCLASS32 ? 10 : 18, sym->st_value, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 1927 | elf_strptr (ebl->elf, shstrndx, secshdr->sh_name)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 1928 | } |
| 1929 | } |
| 1930 | } |
| 1931 | } |
| 1932 | |
| 1933 | |
| 1934 | /* Handle a relocation section. */ |
| 1935 | static void |
| 1936 | handle_relocs_rela (Ebl *ebl, GElf_Ehdr *ehdr, Elf_Scn *scn, GElf_Shdr *shdr) |
| 1937 | { |
| 1938 | int class = gelf_getclass (ebl->elf); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 1939 | size_t sh_entsize = gelf_fsize (ebl->elf, ELF_T_RELA, 1, EV_CURRENT); |
| 1940 | int nentries = shdr->sh_size / sh_entsize; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 1941 | |
| 1942 | /* Get the data of the section. */ |
| 1943 | Elf_Data *data = elf_getdata (scn, NULL); |
| 1944 | if (data == NULL) |
| 1945 | return; |
| 1946 | |
| 1947 | /* Get the symbol table information. */ |
| 1948 | Elf_Scn *symscn = elf_getscn (ebl->elf, shdr->sh_link); |
| 1949 | GElf_Shdr symshdr_mem; |
| 1950 | GElf_Shdr *symshdr = gelf_getshdr (symscn, &symshdr_mem); |
| 1951 | Elf_Data *symdata = elf_getdata (symscn, NULL); |
| 1952 | |
| 1953 | /* Get the section header of the section the relocations are for. */ |
| 1954 | GElf_Shdr destshdr_mem; |
| 1955 | GElf_Shdr *destshdr = gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_info), |
| 1956 | &destshdr_mem); |
| 1957 | |
| 1958 | if (unlikely (symshdr == NULL || symdata == NULL || destshdr == NULL)) |
| 1959 | { |
| 1960 | printf (gettext ("\nInvalid symbol table at offset %#0" PRIx64 "\n"), |
| 1961 | shdr->sh_offset); |
| 1962 | return; |
| 1963 | } |
| 1964 | |
| 1965 | /* Search for the optional extended section index table. */ |
| 1966 | Elf_Data *xndxdata = NULL; |
| 1967 | int xndxscnidx = elf_scnshndx (scn); |
| 1968 | if (unlikely (xndxscnidx > 0)) |
| 1969 | xndxdata = elf_getdata (elf_getscn (ebl->elf, xndxscnidx), NULL); |
| 1970 | |
| 1971 | /* Get the section header string table index. */ |
| 1972 | size_t shstrndx; |
| 1973 | if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0)) |
| 1974 | error (EXIT_FAILURE, 0, |
| 1975 | gettext ("cannot get section header string table index")); |
| 1976 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 1977 | if (shdr->sh_info != 0) |
| 1978 | printf (ngettext ("\ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 1979 | \nRelocation section [%2zu] '%s' for section [%2u] '%s' at offset %#0" PRIx64 " contains %d entry:\n", |
| 1980 | "\ |
| 1981 | \nRelocation section [%2zu] '%s' for section [%2u] '%s' at offset %#0" PRIx64 " contains %d entries:\n", |
| 1982 | nentries), |
| 1983 | elf_ndxscn (scn), |
| 1984 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name), |
| 1985 | (unsigned int) shdr->sh_info, |
| 1986 | elf_strptr (ebl->elf, shstrndx, destshdr->sh_name), |
| 1987 | shdr->sh_offset, |
| 1988 | nentries); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 1989 | else |
| 1990 | /* The .rela.dyn section does not refer to a specific section but |
| 1991 | instead of section index zero. Do not try to print a section |
| 1992 | name. */ |
| 1993 | printf (ngettext ("\ |
| 1994 | \nRelocation section [%2u] '%s' at offset %#0" PRIx64 " contains %d entry:\n", |
| 1995 | "\ |
| 1996 | \nRelocation section [%2u] '%s' at offset %#0" PRIx64 " contains %d entries:\n", |
| 1997 | nentries), |
| 1998 | (unsigned int) elf_ndxscn (scn), |
| 1999 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name), |
| 2000 | shdr->sh_offset, |
| 2001 | nentries); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2002 | fputs_unlocked (class == ELFCLASS32 |
| 2003 | ? gettext ("\ |
| 2004 | Offset Type Value Addend Name\n") |
| 2005 | : gettext ("\ |
| 2006 | Offset Type Value Addend Name\n"), |
| 2007 | stdout); |
| 2008 | |
| 2009 | int is_statically_linked = 0; |
| 2010 | for (int cnt = 0; cnt < nentries; ++cnt) |
| 2011 | { |
| 2012 | GElf_Rela relmem; |
| 2013 | GElf_Rela *rel = gelf_getrela (data, cnt, &relmem); |
| 2014 | if (likely (rel != NULL)) |
| 2015 | { |
| 2016 | char buf[64]; |
| 2017 | GElf_Sym symmem; |
| 2018 | Elf32_Word xndx; |
| 2019 | GElf_Sym *sym = gelf_getsymshndx (symdata, xndxdata, |
| 2020 | GELF_R_SYM (rel->r_info), |
| 2021 | &symmem, &xndx); |
| 2022 | |
| 2023 | if (unlikely (sym == NULL)) |
| 2024 | { |
| 2025 | /* As a special case we have to handle relocations in static |
| 2026 | executables. This only happens for IRELATIVE relocations |
| 2027 | (so far). There is no symbol table. */ |
| 2028 | if (is_statically_linked == 0) |
| 2029 | { |
| 2030 | /* Find the program header and look for a PT_INTERP entry. */ |
| 2031 | is_statically_linked = -1; |
| 2032 | if (ehdr->e_type == ET_EXEC) |
| 2033 | { |
| 2034 | is_statically_linked = 1; |
| 2035 | |
| 2036 | for (size_t inner = 0; inner < phnum; ++inner) |
| 2037 | { |
| 2038 | GElf_Phdr phdr_mem; |
| 2039 | GElf_Phdr *phdr = gelf_getphdr (ebl->elf, inner, |
| 2040 | &phdr_mem); |
| 2041 | if (phdr != NULL && phdr->p_type == PT_INTERP) |
| 2042 | { |
| 2043 | is_statically_linked = -1; |
| 2044 | break; |
| 2045 | } |
| 2046 | } |
| 2047 | } |
| 2048 | } |
| 2049 | |
| 2050 | if (is_statically_linked > 0 && shdr->sh_link == 0) |
| 2051 | printf ("\ |
| 2052 | %#0*" PRIx64 " %-15s %*s %#6" PRIx64 " %s\n", |
| 2053 | class == ELFCLASS32 ? 10 : 18, rel->r_offset, |
| 2054 | ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info)) |
| 2055 | /* Avoid the leading R_ which isn't carrying any |
| 2056 | information. */ |
| 2057 | ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info), |
| 2058 | buf, sizeof (buf)) + 2 |
| 2059 | : gettext ("<INVALID RELOC>"), |
| 2060 | class == ELFCLASS32 ? 10 : 18, "", |
| 2061 | rel->r_addend, |
| 2062 | elf_strptr (ebl->elf, shstrndx, destshdr->sh_name)); |
| 2063 | else |
| 2064 | printf (" %#0*" PRIx64 " %-15s <%s %ld>\n", |
| 2065 | class == ELFCLASS32 ? 10 : 18, rel->r_offset, |
| 2066 | ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info)) |
| 2067 | /* Avoid the leading R_ which isn't carrying any |
| 2068 | information. */ |
| 2069 | ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info), |
| 2070 | buf, sizeof (buf)) + 2 |
| 2071 | : gettext ("<INVALID RELOC>"), |
| 2072 | gettext ("INVALID SYMBOL"), |
| 2073 | (long int) GELF_R_SYM (rel->r_info)); |
| 2074 | } |
| 2075 | else if (GELF_ST_TYPE (sym->st_info) != STT_SECTION) |
| 2076 | printf ("\ |
| 2077 | %#0*" PRIx64 " %-15s %#0*" PRIx64 " %+6" PRId64 " %s\n", |
| 2078 | class == ELFCLASS32 ? 10 : 18, rel->r_offset, |
| 2079 | likely (ebl_reloc_type_check (ebl, |
| 2080 | GELF_R_TYPE (rel->r_info))) |
| 2081 | /* Avoid the leading R_ which isn't carrying any |
| 2082 | information. */ |
| 2083 | ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info), |
| 2084 | buf, sizeof (buf)) + 2 |
| 2085 | : gettext ("<INVALID RELOC>"), |
| 2086 | class == ELFCLASS32 ? 10 : 18, sym->st_value, |
| 2087 | rel->r_addend, |
| 2088 | elf_strptr (ebl->elf, symshdr->sh_link, sym->st_name)); |
| 2089 | else |
| 2090 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2091 | /* This is a relocation against a STT_SECTION symbol. */ |
| 2092 | GElf_Shdr secshdr_mem; |
| 2093 | GElf_Shdr *secshdr; |
| 2094 | secshdr = gelf_getshdr (elf_getscn (ebl->elf, |
| 2095 | sym->st_shndx == SHN_XINDEX |
| 2096 | ? xndx : sym->st_shndx), |
| 2097 | &secshdr_mem); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2098 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2099 | if (unlikely (secshdr == NULL)) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2100 | printf (" %#0*" PRIx64 " %-15s <%s %ld>\n", |
| 2101 | class == ELFCLASS32 ? 10 : 18, rel->r_offset, |
| 2102 | ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info)) |
| 2103 | /* Avoid the leading R_ which isn't carrying any |
| 2104 | information. */ |
| 2105 | ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info), |
| 2106 | buf, sizeof (buf)) + 2 |
| 2107 | : gettext ("<INVALID RELOC>"), |
| 2108 | gettext ("INVALID SECTION"), |
| 2109 | (long int) (sym->st_shndx == SHN_XINDEX |
| 2110 | ? xndx : sym->st_shndx)); |
| 2111 | else |
| 2112 | printf ("\ |
| 2113 | %#0*" PRIx64 " %-15s %#0*" PRIx64 " %+6" PRId64 " %s\n", |
| 2114 | class == ELFCLASS32 ? 10 : 18, rel->r_offset, |
| 2115 | ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info)) |
| 2116 | /* Avoid the leading R_ which isn't carrying any |
| 2117 | information. */ |
| 2118 | ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info), |
| 2119 | buf, sizeof (buf)) + 2 |
| 2120 | : gettext ("<INVALID RELOC>"), |
| 2121 | class == ELFCLASS32 ? 10 : 18, sym->st_value, |
| 2122 | rel->r_addend, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2123 | elf_strptr (ebl->elf, shstrndx, secshdr->sh_name)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2124 | } |
| 2125 | } |
| 2126 | } |
| 2127 | } |
| 2128 | |
| 2129 | |
| 2130 | /* Print the program header. */ |
| 2131 | static void |
| 2132 | print_symtab (Ebl *ebl, int type) |
| 2133 | { |
| 2134 | /* Find the symbol table(s). For this we have to search through the |
| 2135 | section table. */ |
| 2136 | Elf_Scn *scn = NULL; |
| 2137 | |
| 2138 | while ((scn = elf_nextscn (ebl->elf, scn)) != NULL) |
| 2139 | { |
| 2140 | /* Handle the section if it is a symbol table. */ |
| 2141 | GElf_Shdr shdr_mem; |
| 2142 | GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); |
| 2143 | |
| 2144 | if (shdr != NULL && shdr->sh_type == (GElf_Word) type) |
| 2145 | handle_symtab (ebl, scn, shdr); |
| 2146 | } |
| 2147 | } |
| 2148 | |
| 2149 | |
| 2150 | static void |
| 2151 | handle_symtab (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr) |
| 2152 | { |
| 2153 | Elf_Data *versym_data = NULL; |
| 2154 | Elf_Data *verneed_data = NULL; |
| 2155 | Elf_Data *verdef_data = NULL; |
| 2156 | Elf_Data *xndx_data = NULL; |
| 2157 | int class = gelf_getclass (ebl->elf); |
| 2158 | Elf32_Word verneed_stridx = 0; |
| 2159 | Elf32_Word verdef_stridx = 0; |
| 2160 | |
| 2161 | /* Get the data of the section. */ |
| 2162 | Elf_Data *data = elf_getdata (scn, NULL); |
| 2163 | if (data == NULL) |
| 2164 | return; |
| 2165 | |
| 2166 | /* Find out whether we have other sections we might need. */ |
| 2167 | Elf_Scn *runscn = NULL; |
| 2168 | while ((runscn = elf_nextscn (ebl->elf, runscn)) != NULL) |
| 2169 | { |
| 2170 | GElf_Shdr runshdr_mem; |
| 2171 | GElf_Shdr *runshdr = gelf_getshdr (runscn, &runshdr_mem); |
| 2172 | |
| 2173 | if (likely (runshdr != NULL)) |
| 2174 | { |
| 2175 | if (runshdr->sh_type == SHT_GNU_versym |
| 2176 | && runshdr->sh_link == elf_ndxscn (scn)) |
| 2177 | /* Bingo, found the version information. Now get the data. */ |
| 2178 | versym_data = elf_getdata (runscn, NULL); |
| 2179 | else if (runshdr->sh_type == SHT_GNU_verneed) |
| 2180 | { |
| 2181 | /* This is the information about the needed versions. */ |
| 2182 | verneed_data = elf_getdata (runscn, NULL); |
| 2183 | verneed_stridx = runshdr->sh_link; |
| 2184 | } |
| 2185 | else if (runshdr->sh_type == SHT_GNU_verdef) |
| 2186 | { |
| 2187 | /* This is the information about the defined versions. */ |
| 2188 | verdef_data = elf_getdata (runscn, NULL); |
| 2189 | verdef_stridx = runshdr->sh_link; |
| 2190 | } |
| 2191 | else if (runshdr->sh_type == SHT_SYMTAB_SHNDX |
| 2192 | && runshdr->sh_link == elf_ndxscn (scn)) |
| 2193 | /* Extended section index. */ |
| 2194 | xndx_data = elf_getdata (runscn, NULL); |
| 2195 | } |
| 2196 | } |
| 2197 | |
| 2198 | /* Get the section header string table index. */ |
| 2199 | size_t shstrndx; |
| 2200 | if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0)) |
| 2201 | error (EXIT_FAILURE, 0, |
| 2202 | gettext ("cannot get section header string table index")); |
| 2203 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2204 | GElf_Shdr glink_mem; |
| 2205 | GElf_Shdr *glink = gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link), |
| 2206 | &glink_mem); |
| 2207 | if (glink == NULL) |
| 2208 | error (EXIT_FAILURE, 0, gettext ("invalid sh_link value in section %Zu"), |
| 2209 | elf_ndxscn (scn)); |
| 2210 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2211 | /* Now we can compute the number of entries in the section. */ |
| 2212 | unsigned int nsyms = data->d_size / (class == ELFCLASS32 |
| 2213 | ? sizeof (Elf32_Sym) |
| 2214 | : sizeof (Elf64_Sym)); |
| 2215 | |
| 2216 | printf (ngettext ("\nSymbol table [%2u] '%s' contains %u entry:\n", |
| 2217 | "\nSymbol table [%2u] '%s' contains %u entries:\n", |
| 2218 | nsyms), |
| 2219 | (unsigned int) elf_ndxscn (scn), |
| 2220 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name), nsyms); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2221 | printf (ngettext (" %lu local symbol String table: [%2u] '%s'\n", |
| 2222 | " %lu local symbols String table: [%2u] '%s'\n", |
| 2223 | shdr->sh_info), |
| 2224 | (unsigned long int) shdr->sh_info, |
| 2225 | (unsigned int) shdr->sh_link, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2226 | elf_strptr (ebl->elf, shstrndx, glink->sh_name)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2227 | |
| 2228 | fputs_unlocked (class == ELFCLASS32 |
| 2229 | ? gettext ("\ |
| 2230 | Num: Value Size Type Bind Vis Ndx Name\n") |
| 2231 | : gettext ("\ |
| 2232 | Num: Value Size Type Bind Vis Ndx Name\n"), |
| 2233 | stdout); |
| 2234 | |
| 2235 | for (unsigned int cnt = 0; cnt < nsyms; ++cnt) |
| 2236 | { |
| 2237 | char typebuf[64]; |
| 2238 | char bindbuf[64]; |
| 2239 | char scnbuf[64]; |
| 2240 | Elf32_Word xndx; |
| 2241 | GElf_Sym sym_mem; |
| 2242 | GElf_Sym *sym = gelf_getsymshndx (data, xndx_data, cnt, &sym_mem, &xndx); |
| 2243 | |
| 2244 | if (unlikely (sym == NULL)) |
| 2245 | continue; |
| 2246 | |
| 2247 | /* Determine the real section index. */ |
| 2248 | if (likely (sym->st_shndx != SHN_XINDEX)) |
| 2249 | xndx = sym->st_shndx; |
| 2250 | |
| 2251 | printf (gettext ("\ |
| 2252 | %5u: %0*" PRIx64 " %6" PRId64 " %-7s %-6s %-9s %6s %s"), |
| 2253 | cnt, |
| 2254 | class == ELFCLASS32 ? 8 : 16, |
| 2255 | sym->st_value, |
| 2256 | sym->st_size, |
| 2257 | ebl_symbol_type_name (ebl, GELF_ST_TYPE (sym->st_info), |
| 2258 | typebuf, sizeof (typebuf)), |
| 2259 | ebl_symbol_binding_name (ebl, GELF_ST_BIND (sym->st_info), |
| 2260 | bindbuf, sizeof (bindbuf)), |
| 2261 | get_visibility_type (GELF_ST_VISIBILITY (sym->st_other)), |
| 2262 | ebl_section_name (ebl, sym->st_shndx, xndx, scnbuf, |
| 2263 | sizeof (scnbuf), NULL, shnum), |
| 2264 | elf_strptr (ebl->elf, shdr->sh_link, sym->st_name)); |
| 2265 | |
| 2266 | if (versym_data != NULL) |
| 2267 | { |
| 2268 | /* Get the version information. */ |
| 2269 | GElf_Versym versym_mem; |
| 2270 | GElf_Versym *versym = gelf_getversym (versym_data, cnt, &versym_mem); |
| 2271 | |
| 2272 | if (versym != NULL && ((*versym & 0x8000) != 0 || *versym > 1)) |
| 2273 | { |
| 2274 | bool is_nobits = false; |
| 2275 | bool check_def = xndx != SHN_UNDEF; |
| 2276 | |
| 2277 | if (xndx < SHN_LORESERVE || sym->st_shndx == SHN_XINDEX) |
| 2278 | { |
| 2279 | GElf_Shdr symshdr_mem; |
| 2280 | GElf_Shdr *symshdr = |
| 2281 | gelf_getshdr (elf_getscn (ebl->elf, xndx), &symshdr_mem); |
| 2282 | |
| 2283 | is_nobits = (symshdr != NULL |
| 2284 | && symshdr->sh_type == SHT_NOBITS); |
| 2285 | } |
| 2286 | |
| 2287 | if (is_nobits || ! check_def) |
| 2288 | { |
| 2289 | /* We must test both. */ |
| 2290 | GElf_Vernaux vernaux_mem; |
| 2291 | GElf_Vernaux *vernaux = NULL; |
| 2292 | size_t vn_offset = 0; |
| 2293 | |
| 2294 | GElf_Verneed verneed_mem; |
| 2295 | GElf_Verneed *verneed = gelf_getverneed (verneed_data, 0, |
| 2296 | &verneed_mem); |
| 2297 | while (verneed != NULL) |
| 2298 | { |
| 2299 | size_t vna_offset = vn_offset; |
| 2300 | |
| 2301 | vernaux = gelf_getvernaux (verneed_data, |
| 2302 | vna_offset += verneed->vn_aux, |
| 2303 | &vernaux_mem); |
| 2304 | while (vernaux != NULL |
| 2305 | && vernaux->vna_other != *versym |
| 2306 | && vernaux->vna_next != 0) |
| 2307 | { |
| 2308 | /* Update the offset. */ |
| 2309 | vna_offset += vernaux->vna_next; |
| 2310 | |
| 2311 | vernaux = (vernaux->vna_next == 0 |
| 2312 | ? NULL |
| 2313 | : gelf_getvernaux (verneed_data, |
| 2314 | vna_offset, |
| 2315 | &vernaux_mem)); |
| 2316 | } |
| 2317 | |
| 2318 | /* Check whether we found the version. */ |
| 2319 | if (vernaux != NULL && vernaux->vna_other == *versym) |
| 2320 | /* Found it. */ |
| 2321 | break; |
| 2322 | |
| 2323 | vn_offset += verneed->vn_next; |
| 2324 | verneed = (verneed->vn_next == 0 |
| 2325 | ? NULL |
| 2326 | : gelf_getverneed (verneed_data, vn_offset, |
| 2327 | &verneed_mem)); |
| 2328 | } |
| 2329 | |
| 2330 | if (vernaux != NULL && vernaux->vna_other == *versym) |
| 2331 | { |
| 2332 | printf ("@%s (%u)", |
| 2333 | elf_strptr (ebl->elf, verneed_stridx, |
| 2334 | vernaux->vna_name), |
| 2335 | (unsigned int) vernaux->vna_other); |
| 2336 | check_def = 0; |
| 2337 | } |
| 2338 | else if (unlikely (! is_nobits)) |
| 2339 | error (0, 0, gettext ("bad dynamic symbol")); |
| 2340 | else |
| 2341 | check_def = 1; |
| 2342 | } |
| 2343 | |
| 2344 | if (check_def && *versym != 0x8001) |
| 2345 | { |
| 2346 | /* We must test both. */ |
| 2347 | size_t vd_offset = 0; |
| 2348 | |
| 2349 | GElf_Verdef verdef_mem; |
| 2350 | GElf_Verdef *verdef = gelf_getverdef (verdef_data, 0, |
| 2351 | &verdef_mem); |
| 2352 | while (verdef != NULL) |
| 2353 | { |
| 2354 | if (verdef->vd_ndx == (*versym & 0x7fff)) |
| 2355 | /* Found the definition. */ |
| 2356 | break; |
| 2357 | |
| 2358 | vd_offset += verdef->vd_next; |
| 2359 | verdef = (verdef->vd_next == 0 |
| 2360 | ? NULL |
| 2361 | : gelf_getverdef (verdef_data, vd_offset, |
| 2362 | &verdef_mem)); |
| 2363 | } |
| 2364 | |
| 2365 | if (verdef != NULL) |
| 2366 | { |
| 2367 | GElf_Verdaux verdaux_mem; |
| 2368 | GElf_Verdaux *verdaux |
| 2369 | = gelf_getverdaux (verdef_data, |
| 2370 | vd_offset + verdef->vd_aux, |
| 2371 | &verdaux_mem); |
| 2372 | |
| 2373 | if (verdaux != NULL) |
| 2374 | printf ((*versym & 0x8000) ? "@%s" : "@@%s", |
| 2375 | elf_strptr (ebl->elf, verdef_stridx, |
| 2376 | verdaux->vda_name)); |
| 2377 | } |
| 2378 | } |
| 2379 | } |
| 2380 | } |
| 2381 | |
| 2382 | putchar_unlocked ('\n'); |
| 2383 | } |
| 2384 | } |
| 2385 | |
| 2386 | |
| 2387 | /* Print version information. */ |
| 2388 | static void |
| 2389 | print_verinfo (Ebl *ebl) |
| 2390 | { |
| 2391 | /* Find the version information sections. For this we have to |
| 2392 | search through the section table. */ |
| 2393 | Elf_Scn *scn = NULL; |
| 2394 | |
| 2395 | while ((scn = elf_nextscn (ebl->elf, scn)) != NULL) |
| 2396 | { |
| 2397 | /* Handle the section if it is part of the versioning handling. */ |
| 2398 | GElf_Shdr shdr_mem; |
| 2399 | GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); |
| 2400 | |
| 2401 | if (likely (shdr != NULL)) |
| 2402 | { |
| 2403 | if (shdr->sh_type == SHT_GNU_verneed) |
| 2404 | handle_verneed (ebl, scn, shdr); |
| 2405 | else if (shdr->sh_type == SHT_GNU_verdef) |
| 2406 | handle_verdef (ebl, scn, shdr); |
| 2407 | else if (shdr->sh_type == SHT_GNU_versym) |
| 2408 | handle_versym (ebl, scn, shdr); |
| 2409 | } |
| 2410 | } |
| 2411 | } |
| 2412 | |
| 2413 | |
| 2414 | static const char * |
| 2415 | get_ver_flags (unsigned int flags) |
| 2416 | { |
| 2417 | static char buf[32]; |
| 2418 | char *endp; |
| 2419 | |
| 2420 | if (flags == 0) |
| 2421 | return gettext ("none"); |
| 2422 | |
| 2423 | if (flags & VER_FLG_BASE) |
| 2424 | endp = stpcpy (buf, "BASE "); |
| 2425 | else |
| 2426 | endp = buf; |
| 2427 | |
| 2428 | if (flags & VER_FLG_WEAK) |
| 2429 | { |
| 2430 | if (endp != buf) |
| 2431 | endp = stpcpy (endp, "| "); |
| 2432 | |
| 2433 | endp = stpcpy (endp, "WEAK "); |
| 2434 | } |
| 2435 | |
| 2436 | if (unlikely (flags & ~(VER_FLG_BASE | VER_FLG_WEAK))) |
| 2437 | { |
| 2438 | strncpy (endp, gettext ("| <unknown>"), buf + sizeof (buf) - endp); |
| 2439 | buf[sizeof (buf) - 1] = '\0'; |
| 2440 | } |
| 2441 | |
| 2442 | return buf; |
| 2443 | } |
| 2444 | |
| 2445 | |
| 2446 | static void |
| 2447 | handle_verneed (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr) |
| 2448 | { |
| 2449 | int class = gelf_getclass (ebl->elf); |
| 2450 | |
| 2451 | /* Get the data of the section. */ |
| 2452 | Elf_Data *data = elf_getdata (scn, NULL); |
| 2453 | if (data == NULL) |
| 2454 | return; |
| 2455 | |
| 2456 | /* Get the section header string table index. */ |
| 2457 | size_t shstrndx; |
| 2458 | if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0)) |
| 2459 | error (EXIT_FAILURE, 0, |
| 2460 | gettext ("cannot get section header string table index")); |
| 2461 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2462 | GElf_Shdr glink_mem; |
| 2463 | GElf_Shdr *glink = gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link), |
| 2464 | &glink_mem); |
| 2465 | if (glink == NULL) |
| 2466 | error (EXIT_FAILURE, 0, gettext ("invalid sh_link value in section %Zu"), |
| 2467 | elf_ndxscn (scn)); |
| 2468 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2469 | printf (ngettext ("\ |
| 2470 | \nVersion needs section [%2u] '%s' contains %d entry:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'\n", |
| 2471 | "\ |
| 2472 | \nVersion needs section [%2u] '%s' contains %d entries:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'\n", |
| 2473 | shdr->sh_info), |
| 2474 | (unsigned int) elf_ndxscn (scn), |
| 2475 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name), shdr->sh_info, |
| 2476 | class == ELFCLASS32 ? 10 : 18, shdr->sh_addr, |
| 2477 | shdr->sh_offset, |
| 2478 | (unsigned int) shdr->sh_link, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2479 | elf_strptr (ebl->elf, shstrndx, glink->sh_name)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2480 | |
| 2481 | unsigned int offset = 0; |
| 2482 | for (int cnt = shdr->sh_info; --cnt >= 0; ) |
| 2483 | { |
| 2484 | /* Get the data at the next offset. */ |
| 2485 | GElf_Verneed needmem; |
| 2486 | GElf_Verneed *need = gelf_getverneed (data, offset, &needmem); |
| 2487 | if (unlikely (need == NULL)) |
| 2488 | break; |
| 2489 | |
| 2490 | printf (gettext (" %#06x: Version: %hu File: %s Cnt: %hu\n"), |
| 2491 | offset, (unsigned short int) need->vn_version, |
| 2492 | elf_strptr (ebl->elf, shdr->sh_link, need->vn_file), |
| 2493 | (unsigned short int) need->vn_cnt); |
| 2494 | |
| 2495 | unsigned int auxoffset = offset + need->vn_aux; |
| 2496 | for (int cnt2 = need->vn_cnt; --cnt2 >= 0; ) |
| 2497 | { |
| 2498 | GElf_Vernaux auxmem; |
| 2499 | GElf_Vernaux *aux = gelf_getvernaux (data, auxoffset, &auxmem); |
| 2500 | if (unlikely (aux == NULL)) |
| 2501 | break; |
| 2502 | |
| 2503 | printf (gettext (" %#06x: Name: %s Flags: %s Version: %hu\n"), |
| 2504 | auxoffset, |
| 2505 | elf_strptr (ebl->elf, shdr->sh_link, aux->vna_name), |
| 2506 | get_ver_flags (aux->vna_flags), |
| 2507 | (unsigned short int) aux->vna_other); |
| 2508 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2509 | if (aux->vna_next == 0) |
| 2510 | break; |
| 2511 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2512 | auxoffset += aux->vna_next; |
| 2513 | } |
| 2514 | |
| 2515 | /* Find the next offset. */ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2516 | if (need->vn_next == 0) |
| 2517 | break; |
| 2518 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2519 | offset += need->vn_next; |
| 2520 | } |
| 2521 | } |
| 2522 | |
| 2523 | |
| 2524 | static void |
| 2525 | handle_verdef (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr) |
| 2526 | { |
| 2527 | /* Get the data of the section. */ |
| 2528 | Elf_Data *data = elf_getdata (scn, NULL); |
| 2529 | if (data == NULL) |
| 2530 | return; |
| 2531 | |
| 2532 | /* Get the section header string table index. */ |
| 2533 | size_t shstrndx; |
| 2534 | if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0)) |
| 2535 | error (EXIT_FAILURE, 0, |
| 2536 | gettext ("cannot get section header string table index")); |
| 2537 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2538 | GElf_Shdr glink_mem; |
| 2539 | GElf_Shdr *glink = gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link), |
| 2540 | &glink_mem); |
| 2541 | if (glink == NULL) |
| 2542 | error (EXIT_FAILURE, 0, gettext ("invalid sh_link value in section %Zu"), |
| 2543 | elf_ndxscn (scn)); |
| 2544 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2545 | int class = gelf_getclass (ebl->elf); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2546 | printf (ngettext ("\ |
| 2547 | \nVersion definition section [%2u] '%s' contains %d entry:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'\n", |
| 2548 | "\ |
| 2549 | \nVersion definition section [%2u] '%s' contains %d entries:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'\n", |
| 2550 | shdr->sh_info), |
| 2551 | (unsigned int) elf_ndxscn (scn), |
| 2552 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name), |
| 2553 | shdr->sh_info, |
| 2554 | class == ELFCLASS32 ? 10 : 18, shdr->sh_addr, |
| 2555 | shdr->sh_offset, |
| 2556 | (unsigned int) shdr->sh_link, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2557 | elf_strptr (ebl->elf, shstrndx, glink->sh_name)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2558 | |
| 2559 | unsigned int offset = 0; |
| 2560 | for (int cnt = shdr->sh_info; --cnt >= 0; ) |
| 2561 | { |
| 2562 | /* Get the data at the next offset. */ |
| 2563 | GElf_Verdef defmem; |
| 2564 | GElf_Verdef *def = gelf_getverdef (data, offset, &defmem); |
| 2565 | if (unlikely (def == NULL)) |
| 2566 | break; |
| 2567 | |
| 2568 | unsigned int auxoffset = offset + def->vd_aux; |
| 2569 | GElf_Verdaux auxmem; |
| 2570 | GElf_Verdaux *aux = gelf_getverdaux (data, auxoffset, &auxmem); |
| 2571 | if (unlikely (aux == NULL)) |
| 2572 | break; |
| 2573 | |
| 2574 | printf (gettext ("\ |
| 2575 | %#06x: Version: %hd Flags: %s Index: %hd Cnt: %hd Name: %s\n"), |
| 2576 | offset, def->vd_version, |
| 2577 | get_ver_flags (def->vd_flags), |
| 2578 | def->vd_ndx, |
| 2579 | def->vd_cnt, |
| 2580 | elf_strptr (ebl->elf, shdr->sh_link, aux->vda_name)); |
| 2581 | |
| 2582 | auxoffset += aux->vda_next; |
| 2583 | for (int cnt2 = 1; cnt2 < def->vd_cnt; ++cnt2) |
| 2584 | { |
| 2585 | aux = gelf_getverdaux (data, auxoffset, &auxmem); |
| 2586 | if (unlikely (aux == NULL)) |
| 2587 | break; |
| 2588 | |
| 2589 | printf (gettext (" %#06x: Parent %d: %s\n"), |
| 2590 | auxoffset, cnt2, |
| 2591 | elf_strptr (ebl->elf, shdr->sh_link, aux->vda_name)); |
| 2592 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2593 | if (aux->vda_next == 0) |
| 2594 | break; |
| 2595 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2596 | auxoffset += aux->vda_next; |
| 2597 | } |
| 2598 | |
| 2599 | /* Find the next offset. */ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2600 | if (def->vd_next == 0) |
| 2601 | break; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2602 | offset += def->vd_next; |
| 2603 | } |
| 2604 | } |
| 2605 | |
| 2606 | |
| 2607 | static void |
| 2608 | handle_versym (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr) |
| 2609 | { |
| 2610 | int class = gelf_getclass (ebl->elf); |
| 2611 | const char **vername; |
| 2612 | const char **filename; |
| 2613 | |
| 2614 | /* Get the data of the section. */ |
| 2615 | Elf_Data *data = elf_getdata (scn, NULL); |
| 2616 | if (data == NULL) |
| 2617 | return; |
| 2618 | |
| 2619 | /* Get the section header string table index. */ |
| 2620 | size_t shstrndx; |
| 2621 | if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0)) |
| 2622 | error (EXIT_FAILURE, 0, |
| 2623 | gettext ("cannot get section header string table index")); |
| 2624 | |
| 2625 | /* We have to find the version definition section and extract the |
| 2626 | version names. */ |
| 2627 | Elf_Scn *defscn = NULL; |
| 2628 | Elf_Scn *needscn = NULL; |
| 2629 | |
| 2630 | Elf_Scn *verscn = NULL; |
| 2631 | while ((verscn = elf_nextscn (ebl->elf, verscn)) != NULL) |
| 2632 | { |
| 2633 | GElf_Shdr vershdr_mem; |
| 2634 | GElf_Shdr *vershdr = gelf_getshdr (verscn, &vershdr_mem); |
| 2635 | |
| 2636 | if (likely (vershdr != NULL)) |
| 2637 | { |
| 2638 | if (vershdr->sh_type == SHT_GNU_verdef) |
| 2639 | defscn = verscn; |
| 2640 | else if (vershdr->sh_type == SHT_GNU_verneed) |
| 2641 | needscn = verscn; |
| 2642 | } |
| 2643 | } |
| 2644 | |
| 2645 | size_t nvername; |
| 2646 | if (defscn != NULL || needscn != NULL) |
| 2647 | { |
| 2648 | /* We have a version information (better should have). Now get |
| 2649 | the version names. First find the maximum version number. */ |
| 2650 | nvername = 0; |
| 2651 | if (defscn != NULL) |
| 2652 | { |
| 2653 | /* Run through the version definitions and find the highest |
| 2654 | index. */ |
| 2655 | unsigned int offset = 0; |
| 2656 | Elf_Data *defdata; |
| 2657 | GElf_Shdr defshdrmem; |
| 2658 | GElf_Shdr *defshdr; |
| 2659 | |
| 2660 | defdata = elf_getdata (defscn, NULL); |
| 2661 | if (unlikely (defdata == NULL)) |
| 2662 | return; |
| 2663 | |
| 2664 | defshdr = gelf_getshdr (defscn, &defshdrmem); |
| 2665 | if (unlikely (defshdr == NULL)) |
| 2666 | return; |
| 2667 | |
| 2668 | for (unsigned int cnt = 0; cnt < defshdr->sh_info; ++cnt) |
| 2669 | { |
| 2670 | GElf_Verdef defmem; |
| 2671 | GElf_Verdef *def; |
| 2672 | |
| 2673 | /* Get the data at the next offset. */ |
| 2674 | def = gelf_getverdef (defdata, offset, &defmem); |
| 2675 | if (unlikely (def == NULL)) |
| 2676 | break; |
| 2677 | |
| 2678 | nvername = MAX (nvername, (size_t) (def->vd_ndx & 0x7fff)); |
| 2679 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2680 | if (def->vd_next == 0) |
| 2681 | break; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2682 | offset += def->vd_next; |
| 2683 | } |
| 2684 | } |
| 2685 | if (needscn != NULL) |
| 2686 | { |
| 2687 | unsigned int offset = 0; |
| 2688 | Elf_Data *needdata; |
| 2689 | GElf_Shdr needshdrmem; |
| 2690 | GElf_Shdr *needshdr; |
| 2691 | |
| 2692 | needdata = elf_getdata (needscn, NULL); |
| 2693 | if (unlikely (needdata == NULL)) |
| 2694 | return; |
| 2695 | |
| 2696 | needshdr = gelf_getshdr (needscn, &needshdrmem); |
| 2697 | if (unlikely (needshdr == NULL)) |
| 2698 | return; |
| 2699 | |
| 2700 | for (unsigned int cnt = 0; cnt < needshdr->sh_info; ++cnt) |
| 2701 | { |
| 2702 | GElf_Verneed needmem; |
| 2703 | GElf_Verneed *need; |
| 2704 | unsigned int auxoffset; |
| 2705 | int cnt2; |
| 2706 | |
| 2707 | /* Get the data at the next offset. */ |
| 2708 | need = gelf_getverneed (needdata, offset, &needmem); |
| 2709 | if (unlikely (need == NULL)) |
| 2710 | break; |
| 2711 | |
| 2712 | /* Run through the auxiliary entries. */ |
| 2713 | auxoffset = offset + need->vn_aux; |
| 2714 | for (cnt2 = need->vn_cnt; --cnt2 >= 0; ) |
| 2715 | { |
| 2716 | GElf_Vernaux auxmem; |
| 2717 | GElf_Vernaux *aux; |
| 2718 | |
| 2719 | aux = gelf_getvernaux (needdata, auxoffset, &auxmem); |
| 2720 | if (unlikely (aux == NULL)) |
| 2721 | break; |
| 2722 | |
| 2723 | nvername = MAX (nvername, |
| 2724 | (size_t) (aux->vna_other & 0x7fff)); |
| 2725 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2726 | if (aux->vna_next == 0) |
| 2727 | break; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2728 | auxoffset += aux->vna_next; |
| 2729 | } |
| 2730 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2731 | if (need->vn_next == 0) |
| 2732 | break; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2733 | offset += need->vn_next; |
| 2734 | } |
| 2735 | } |
| 2736 | |
| 2737 | /* This is the number of versions we know about. */ |
| 2738 | ++nvername; |
| 2739 | |
| 2740 | /* Allocate the array. */ |
| 2741 | vername = (const char **) alloca (nvername * sizeof (const char *)); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2742 | memset(vername, 0, nvername * sizeof (const char *)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2743 | filename = (const char **) alloca (nvername * sizeof (const char *)); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2744 | memset(filename, 0, nvername * sizeof (const char *)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2745 | |
| 2746 | /* Run through the data structures again and collect the strings. */ |
| 2747 | if (defscn != NULL) |
| 2748 | { |
| 2749 | /* Run through the version definitions and find the highest |
| 2750 | index. */ |
| 2751 | unsigned int offset = 0; |
| 2752 | Elf_Data *defdata; |
| 2753 | GElf_Shdr defshdrmem; |
| 2754 | GElf_Shdr *defshdr; |
| 2755 | |
| 2756 | defdata = elf_getdata (defscn, NULL); |
| 2757 | if (unlikely (defdata == NULL)) |
| 2758 | return; |
| 2759 | |
| 2760 | defshdr = gelf_getshdr (defscn, &defshdrmem); |
| 2761 | if (unlikely (defshdr == NULL)) |
| 2762 | return; |
| 2763 | |
| 2764 | for (unsigned int cnt = 0; cnt < defshdr->sh_info; ++cnt) |
| 2765 | { |
| 2766 | |
| 2767 | /* Get the data at the next offset. */ |
| 2768 | GElf_Verdef defmem; |
| 2769 | GElf_Verdef *def = gelf_getverdef (defdata, offset, &defmem); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2770 | if (unlikely (def == NULL)) |
| 2771 | break; |
| 2772 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2773 | GElf_Verdaux auxmem; |
| 2774 | GElf_Verdaux *aux = gelf_getverdaux (defdata, |
| 2775 | offset + def->vd_aux, |
| 2776 | &auxmem); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2777 | if (unlikely (aux == NULL)) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2778 | break; |
| 2779 | |
| 2780 | vername[def->vd_ndx & 0x7fff] |
| 2781 | = elf_strptr (ebl->elf, defshdr->sh_link, aux->vda_name); |
| 2782 | filename[def->vd_ndx & 0x7fff] = NULL; |
| 2783 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2784 | if (def->vd_next == 0) |
| 2785 | break; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2786 | offset += def->vd_next; |
| 2787 | } |
| 2788 | } |
| 2789 | if (needscn != NULL) |
| 2790 | { |
| 2791 | unsigned int offset = 0; |
| 2792 | |
| 2793 | Elf_Data *needdata = elf_getdata (needscn, NULL); |
| 2794 | GElf_Shdr needshdrmem; |
| 2795 | GElf_Shdr *needshdr = gelf_getshdr (needscn, &needshdrmem); |
| 2796 | if (unlikely (needdata == NULL || needshdr == NULL)) |
| 2797 | return; |
| 2798 | |
| 2799 | for (unsigned int cnt = 0; cnt < needshdr->sh_info; ++cnt) |
| 2800 | { |
| 2801 | /* Get the data at the next offset. */ |
| 2802 | GElf_Verneed needmem; |
| 2803 | GElf_Verneed *need = gelf_getverneed (needdata, offset, |
| 2804 | &needmem); |
| 2805 | if (unlikely (need == NULL)) |
| 2806 | break; |
| 2807 | |
| 2808 | /* Run through the auxiliary entries. */ |
| 2809 | unsigned int auxoffset = offset + need->vn_aux; |
| 2810 | for (int cnt2 = need->vn_cnt; --cnt2 >= 0; ) |
| 2811 | { |
| 2812 | GElf_Vernaux auxmem; |
| 2813 | GElf_Vernaux *aux = gelf_getvernaux (needdata, auxoffset, |
| 2814 | &auxmem); |
| 2815 | if (unlikely (aux == NULL)) |
| 2816 | break; |
| 2817 | |
| 2818 | vername[aux->vna_other & 0x7fff] |
| 2819 | = elf_strptr (ebl->elf, needshdr->sh_link, aux->vna_name); |
| 2820 | filename[aux->vna_other & 0x7fff] |
| 2821 | = elf_strptr (ebl->elf, needshdr->sh_link, need->vn_file); |
| 2822 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2823 | if (aux->vna_next == 0) |
| 2824 | break; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2825 | auxoffset += aux->vna_next; |
| 2826 | } |
| 2827 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2828 | if (need->vn_next == 0) |
| 2829 | break; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2830 | offset += need->vn_next; |
| 2831 | } |
| 2832 | } |
| 2833 | } |
| 2834 | else |
| 2835 | { |
| 2836 | vername = NULL; |
| 2837 | nvername = 1; |
| 2838 | filename = NULL; |
| 2839 | } |
| 2840 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2841 | GElf_Shdr glink_mem; |
| 2842 | GElf_Shdr *glink = gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link), |
| 2843 | &glink_mem); |
| 2844 | size_t sh_entsize = gelf_fsize (ebl->elf, ELF_T_HALF, 1, EV_CURRENT); |
| 2845 | if (glink == NULL) |
| 2846 | error (EXIT_FAILURE, 0, gettext ("invalid sh_link value in section %Zu"), |
| 2847 | elf_ndxscn (scn)); |
| 2848 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2849 | /* Print the header. */ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2850 | printf (ngettext ("\ |
| 2851 | \nVersion symbols section [%2u] '%s' contains %d entry:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'", |
| 2852 | "\ |
| 2853 | \nVersion symbols section [%2u] '%s' contains %d entries:\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2854 | shdr->sh_size / sh_entsize), |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2855 | (unsigned int) elf_ndxscn (scn), |
| 2856 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name), |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2857 | (int) (shdr->sh_size / sh_entsize), |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2858 | class == ELFCLASS32 ? 10 : 18, shdr->sh_addr, |
| 2859 | shdr->sh_offset, |
| 2860 | (unsigned int) shdr->sh_link, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2861 | elf_strptr (ebl->elf, shstrndx, glink->sh_name)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2862 | |
| 2863 | /* Now we can finally look at the actual contents of this section. */ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2864 | for (unsigned int cnt = 0; cnt < shdr->sh_size / sh_entsize; ++cnt) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2865 | { |
| 2866 | if (cnt % 2 == 0) |
| 2867 | printf ("\n %4d:", cnt); |
| 2868 | |
| 2869 | GElf_Versym symmem; |
| 2870 | GElf_Versym *sym = gelf_getversym (data, cnt, &symmem); |
| 2871 | if (sym == NULL) |
| 2872 | break; |
| 2873 | |
| 2874 | switch (*sym) |
| 2875 | { |
| 2876 | ssize_t n; |
| 2877 | case 0: |
| 2878 | fputs_unlocked (gettext (" 0 *local* "), |
| 2879 | stdout); |
| 2880 | break; |
| 2881 | |
| 2882 | case 1: |
| 2883 | fputs_unlocked (gettext (" 1 *global* "), |
| 2884 | stdout); |
| 2885 | break; |
| 2886 | |
| 2887 | default: |
| 2888 | n = printf ("%4d%c%s", |
| 2889 | *sym & 0x7fff, *sym & 0x8000 ? 'h' : ' ', |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2890 | (vername != NULL |
| 2891 | && (unsigned int) (*sym & 0x7fff) < nvername) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2892 | ? vername[*sym & 0x7fff] : "???"); |
| 2893 | if ((unsigned int) (*sym & 0x7fff) < nvername |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2894 | && filename != NULL && filename[*sym & 0x7fff] != NULL) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2895 | n += printf ("(%s)", filename[*sym & 0x7fff]); |
| 2896 | printf ("%*s", MAX (0, 33 - (int) n), " "); |
| 2897 | break; |
| 2898 | } |
| 2899 | } |
| 2900 | putchar_unlocked ('\n'); |
| 2901 | } |
| 2902 | |
| 2903 | |
| 2904 | static void |
| 2905 | print_hash_info (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr, size_t shstrndx, |
| 2906 | uint_fast32_t maxlength, Elf32_Word nbucket, |
| 2907 | uint_fast32_t nsyms, uint32_t *lengths, const char *extrastr) |
| 2908 | { |
| 2909 | uint32_t *counts = (uint32_t *) xcalloc (maxlength + 1, sizeof (uint32_t)); |
| 2910 | |
| 2911 | for (Elf32_Word cnt = 0; cnt < nbucket; ++cnt) |
| 2912 | ++counts[lengths[cnt]]; |
| 2913 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2914 | GElf_Shdr glink_mem; |
| 2915 | GElf_Shdr *glink = gelf_getshdr (elf_getscn (ebl->elf, |
| 2916 | shdr->sh_link), |
| 2917 | &glink_mem); |
| 2918 | if (glink == NULL) |
| 2919 | { |
| 2920 | error (0, 0, gettext ("invalid sh_link value in section %Zu"), |
| 2921 | elf_ndxscn (scn)); |
| 2922 | return; |
| 2923 | } |
| 2924 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2925 | printf (ngettext ("\ |
| 2926 | \nHistogram for bucket list length in section [%2u] '%s' (total of %d bucket):\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'\n", |
| 2927 | "\ |
| 2928 | \nHistogram for bucket list length in section [%2u] '%s' (total of %d buckets):\n Addr: %#0*" PRIx64 " Offset: %#08" PRIx64 " Link to section: [%2u] '%s'\n", |
| 2929 | nbucket), |
| 2930 | (unsigned int) elf_ndxscn (scn), |
| 2931 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name), |
| 2932 | (int) nbucket, |
| 2933 | gelf_getclass (ebl->elf) == ELFCLASS32 ? 10 : 18, |
| 2934 | shdr->sh_addr, |
| 2935 | shdr->sh_offset, |
| 2936 | (unsigned int) shdr->sh_link, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2937 | elf_strptr (ebl->elf, shstrndx, glink->sh_name)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 2938 | |
| 2939 | if (extrastr != NULL) |
| 2940 | fputs (extrastr, stdout); |
| 2941 | |
| 2942 | if (likely (nbucket > 0)) |
| 2943 | { |
| 2944 | uint64_t success = 0; |
| 2945 | |
| 2946 | /* xgettext:no-c-format */ |
| 2947 | fputs_unlocked (gettext ("\ |
| 2948 | Length Number % of total Coverage\n"), stdout); |
| 2949 | printf (gettext (" 0 %6" PRIu32 " %5.1f%%\n"), |
| 2950 | counts[0], (counts[0] * 100.0) / nbucket); |
| 2951 | |
| 2952 | uint64_t nzero_counts = 0; |
| 2953 | for (Elf32_Word cnt = 1; cnt <= maxlength; ++cnt) |
| 2954 | { |
| 2955 | nzero_counts += counts[cnt] * cnt; |
| 2956 | printf (gettext ("\ |
| 2957 | %7d %6" PRIu32 " %5.1f%% %5.1f%%\n"), |
| 2958 | (int) cnt, counts[cnt], (counts[cnt] * 100.0) / nbucket, |
| 2959 | (nzero_counts * 100.0) / nsyms); |
| 2960 | } |
| 2961 | |
| 2962 | Elf32_Word acc = 0; |
| 2963 | for (Elf32_Word cnt = 1; cnt <= maxlength; ++cnt) |
| 2964 | { |
| 2965 | acc += cnt; |
| 2966 | success += counts[cnt] * acc; |
| 2967 | } |
| 2968 | |
| 2969 | printf (gettext ("\ |
| 2970 | Average number of tests: successful lookup: %f\n\ |
| 2971 | unsuccessful lookup: %f\n"), |
| 2972 | (double) success / (double) nzero_counts, |
| 2973 | (double) nzero_counts / (double) nbucket); |
| 2974 | } |
| 2975 | |
| 2976 | free (counts); |
| 2977 | } |
| 2978 | |
| 2979 | |
| 2980 | /* This function handles the traditional System V-style hash table format. */ |
| 2981 | static void |
| 2982 | handle_sysv_hash (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr, size_t shstrndx) |
| 2983 | { |
| 2984 | Elf_Data *data = elf_getdata (scn, NULL); |
| 2985 | if (unlikely (data == NULL)) |
| 2986 | { |
| 2987 | error (0, 0, gettext ("cannot get data for section %d: %s"), |
| 2988 | (int) elf_ndxscn (scn), elf_errmsg (-1)); |
| 2989 | return; |
| 2990 | } |
| 2991 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 2992 | if (unlikely (data->d_size < 2 * sizeof (Elf32_Word))) |
| 2993 | { |
| 2994 | invalid_data: |
| 2995 | error (0, 0, gettext ("invalid data in sysv.hash section %d"), |
| 2996 | (int) elf_ndxscn (scn)); |
| 2997 | return; |
| 2998 | } |
| 2999 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3000 | Elf32_Word nbucket = ((Elf32_Word *) data->d_buf)[0]; |
| 3001 | Elf32_Word nchain = ((Elf32_Word *) data->d_buf)[1]; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3002 | |
| 3003 | uint64_t used_buf = (2ULL + nchain + nbucket) * sizeof (Elf32_Word); |
| 3004 | if (used_buf > data->d_size) |
| 3005 | goto invalid_data; |
| 3006 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3007 | Elf32_Word *bucket = &((Elf32_Word *) data->d_buf)[2]; |
| 3008 | Elf32_Word *chain = &((Elf32_Word *) data->d_buf)[2 + nbucket]; |
| 3009 | |
| 3010 | uint32_t *lengths = (uint32_t *) xcalloc (nbucket, sizeof (uint32_t)); |
| 3011 | |
| 3012 | uint_fast32_t maxlength = 0; |
| 3013 | uint_fast32_t nsyms = 0; |
| 3014 | for (Elf32_Word cnt = 0; cnt < nbucket; ++cnt) |
| 3015 | { |
| 3016 | Elf32_Word inner = bucket[cnt]; |
| 3017 | while (inner > 0 && inner < nchain) |
| 3018 | { |
| 3019 | ++nsyms; |
| 3020 | if (maxlength < ++lengths[cnt]) |
| 3021 | ++maxlength; |
| 3022 | |
| 3023 | inner = chain[inner]; |
| 3024 | } |
| 3025 | } |
| 3026 | |
| 3027 | print_hash_info (ebl, scn, shdr, shstrndx, maxlength, nbucket, nsyms, |
| 3028 | lengths, NULL); |
| 3029 | |
| 3030 | free (lengths); |
| 3031 | } |
| 3032 | |
| 3033 | |
| 3034 | /* This function handles the incorrect, System V-style hash table |
| 3035 | format some 64-bit architectures use. */ |
| 3036 | static void |
| 3037 | handle_sysv_hash64 (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr, size_t shstrndx) |
| 3038 | { |
| 3039 | Elf_Data *data = elf_getdata (scn, NULL); |
| 3040 | if (unlikely (data == NULL)) |
| 3041 | { |
| 3042 | error (0, 0, gettext ("cannot get data for section %d: %s"), |
| 3043 | (int) elf_ndxscn (scn), elf_errmsg (-1)); |
| 3044 | return; |
| 3045 | } |
| 3046 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3047 | if (unlikely (data->d_size < 2 * sizeof (Elf64_Xword))) |
| 3048 | { |
| 3049 | invalid_data: |
| 3050 | error (0, 0, gettext ("invalid data in sysv.hash64 section %d"), |
| 3051 | (int) elf_ndxscn (scn)); |
| 3052 | return; |
| 3053 | } |
| 3054 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3055 | Elf64_Xword nbucket = ((Elf64_Xword *) data->d_buf)[0]; |
| 3056 | Elf64_Xword nchain = ((Elf64_Xword *) data->d_buf)[1]; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3057 | |
| 3058 | uint64_t maxwords = data->d_size / sizeof (Elf64_Xword); |
| 3059 | if (maxwords < 2 |
| 3060 | || maxwords - 2 < nbucket |
| 3061 | || maxwords - 2 - nbucket < nchain) |
| 3062 | goto invalid_data; |
| 3063 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3064 | Elf64_Xword *bucket = &((Elf64_Xword *) data->d_buf)[2]; |
| 3065 | Elf64_Xword *chain = &((Elf64_Xword *) data->d_buf)[2 + nbucket]; |
| 3066 | |
| 3067 | uint32_t *lengths = (uint32_t *) xcalloc (nbucket, sizeof (uint32_t)); |
| 3068 | |
| 3069 | uint_fast32_t maxlength = 0; |
| 3070 | uint_fast32_t nsyms = 0; |
| 3071 | for (Elf64_Xword cnt = 0; cnt < nbucket; ++cnt) |
| 3072 | { |
| 3073 | Elf64_Xword inner = bucket[cnt]; |
| 3074 | while (inner > 0 && inner < nchain) |
| 3075 | { |
| 3076 | ++nsyms; |
| 3077 | if (maxlength < ++lengths[cnt]) |
| 3078 | ++maxlength; |
| 3079 | |
| 3080 | inner = chain[inner]; |
| 3081 | } |
| 3082 | } |
| 3083 | |
| 3084 | print_hash_info (ebl, scn, shdr, shstrndx, maxlength, nbucket, nsyms, |
| 3085 | lengths, NULL); |
| 3086 | |
| 3087 | free (lengths); |
| 3088 | } |
| 3089 | |
| 3090 | |
| 3091 | /* This function handles the GNU-style hash table format. */ |
| 3092 | static void |
| 3093 | handle_gnu_hash (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr, size_t shstrndx) |
| 3094 | { |
| 3095 | Elf_Data *data = elf_getdata (scn, NULL); |
| 3096 | if (unlikely (data == NULL)) |
| 3097 | { |
| 3098 | error (0, 0, gettext ("cannot get data for section %d: %s"), |
| 3099 | (int) elf_ndxscn (scn), elf_errmsg (-1)); |
| 3100 | return; |
| 3101 | } |
| 3102 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3103 | if (unlikely (data->d_size < 4 * sizeof (Elf32_Word))) |
| 3104 | { |
| 3105 | invalid_data: |
| 3106 | error (0, 0, gettext ("invalid data in gnu.hash section %d"), |
| 3107 | (int) elf_ndxscn (scn)); |
| 3108 | return; |
| 3109 | } |
| 3110 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3111 | Elf32_Word nbucket = ((Elf32_Word *) data->d_buf)[0]; |
| 3112 | Elf32_Word symbias = ((Elf32_Word *) data->d_buf)[1]; |
| 3113 | |
| 3114 | /* Next comes the size of the bitmap. It's measured in words for |
| 3115 | the architecture. It's 32 bits for 32 bit archs, and 64 bits for |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3116 | 64 bit archs. There is always a bloom filter present, so zero is |
| 3117 | an invalid value. */ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3118 | Elf32_Word bitmask_words = ((Elf32_Word *) data->d_buf)[2]; |
| 3119 | if (gelf_getclass (ebl->elf) == ELFCLASS64) |
| 3120 | bitmask_words *= 2; |
| 3121 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3122 | if (bitmask_words == 0) |
| 3123 | goto invalid_data; |
| 3124 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3125 | Elf32_Word shift = ((Elf32_Word *) data->d_buf)[3]; |
| 3126 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3127 | /* Is there still room for the sym chain? |
| 3128 | Use uint64_t calculation to prevent 32bit overlow. */ |
| 3129 | uint64_t used_buf = (4ULL + bitmask_words + nbucket) * sizeof (Elf32_Word); |
| 3130 | uint32_t max_nsyms = (data->d_size - used_buf) / sizeof (Elf32_Word); |
| 3131 | if (used_buf > data->d_size) |
| 3132 | goto invalid_data; |
| 3133 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3134 | uint32_t *lengths = (uint32_t *) xcalloc (nbucket, sizeof (uint32_t)); |
| 3135 | |
| 3136 | Elf32_Word *bitmask = &((Elf32_Word *) data->d_buf)[4]; |
| 3137 | Elf32_Word *bucket = &((Elf32_Word *) data->d_buf)[4 + bitmask_words]; |
| 3138 | Elf32_Word *chain = &((Elf32_Word *) data->d_buf)[4 + bitmask_words |
| 3139 | + nbucket]; |
| 3140 | |
| 3141 | /* Compute distribution of chain lengths. */ |
| 3142 | uint_fast32_t maxlength = 0; |
| 3143 | uint_fast32_t nsyms = 0; |
| 3144 | for (Elf32_Word cnt = 0; cnt < nbucket; ++cnt) |
| 3145 | if (bucket[cnt] != 0) |
| 3146 | { |
| 3147 | Elf32_Word inner = bucket[cnt] - symbias; |
| 3148 | do |
| 3149 | { |
| 3150 | ++nsyms; |
| 3151 | if (maxlength < ++lengths[cnt]) |
| 3152 | ++maxlength; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3153 | if (inner > max_nsyms) |
| 3154 | goto invalid_data; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3155 | } |
| 3156 | while ((chain[inner++] & 1) == 0); |
| 3157 | } |
| 3158 | |
| 3159 | /* Count bits in bitmask. */ |
| 3160 | uint_fast32_t nbits = 0; |
| 3161 | for (Elf32_Word cnt = 0; cnt < bitmask_words; ++cnt) |
| 3162 | { |
| 3163 | uint_fast32_t word = bitmask[cnt]; |
| 3164 | |
| 3165 | word = (word & 0x55555555) + ((word >> 1) & 0x55555555); |
| 3166 | word = (word & 0x33333333) + ((word >> 2) & 0x33333333); |
| 3167 | word = (word & 0x0f0f0f0f) + ((word >> 4) & 0x0f0f0f0f); |
| 3168 | word = (word & 0x00ff00ff) + ((word >> 8) & 0x00ff00ff); |
| 3169 | nbits += (word & 0x0000ffff) + ((word >> 16) & 0x0000ffff); |
| 3170 | } |
| 3171 | |
| 3172 | char *str; |
| 3173 | if (unlikely (asprintf (&str, gettext ("\ |
| 3174 | Symbol Bias: %u\n\ |
| 3175 | Bitmask Size: %zu bytes %" PRIuFAST32 "%% bits set 2nd hash shift: %u\n"), |
| 3176 | (unsigned int) symbias, |
| 3177 | bitmask_words * sizeof (Elf32_Word), |
| 3178 | ((nbits * 100 + 50) |
| 3179 | / (uint_fast32_t) (bitmask_words |
| 3180 | * sizeof (Elf32_Word) * 8)), |
| 3181 | (unsigned int) shift) == -1)) |
| 3182 | error (EXIT_FAILURE, 0, gettext ("memory exhausted")); |
| 3183 | |
| 3184 | print_hash_info (ebl, scn, shdr, shstrndx, maxlength, nbucket, nsyms, |
| 3185 | lengths, str); |
| 3186 | |
| 3187 | free (str); |
| 3188 | free (lengths); |
| 3189 | } |
| 3190 | |
| 3191 | |
| 3192 | /* Find the symbol table(s). For this we have to search through the |
| 3193 | section table. */ |
| 3194 | static void |
| 3195 | handle_hash (Ebl *ebl) |
| 3196 | { |
| 3197 | /* Get the section header string table index. */ |
| 3198 | size_t shstrndx; |
| 3199 | if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0)) |
| 3200 | error (EXIT_FAILURE, 0, |
| 3201 | gettext ("cannot get section header string table index")); |
| 3202 | |
| 3203 | Elf_Scn *scn = NULL; |
| 3204 | while ((scn = elf_nextscn (ebl->elf, scn)) != NULL) |
| 3205 | { |
| 3206 | /* Handle the section if it is a symbol table. */ |
| 3207 | GElf_Shdr shdr_mem; |
| 3208 | GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); |
| 3209 | |
| 3210 | if (likely (shdr != NULL)) |
| 3211 | { |
| 3212 | if (shdr->sh_type == SHT_HASH) |
| 3213 | { |
| 3214 | if (ebl_sysvhash_entrysize (ebl) == sizeof (Elf64_Xword)) |
| 3215 | handle_sysv_hash64 (ebl, scn, shdr, shstrndx); |
| 3216 | else |
| 3217 | handle_sysv_hash (ebl, scn, shdr, shstrndx); |
| 3218 | } |
| 3219 | else if (shdr->sh_type == SHT_GNU_HASH) |
| 3220 | handle_gnu_hash (ebl, scn, shdr, shstrndx); |
| 3221 | } |
| 3222 | } |
| 3223 | } |
| 3224 | |
| 3225 | |
| 3226 | static void |
| 3227 | print_liblist (Ebl *ebl) |
| 3228 | { |
| 3229 | /* Find the library list sections. For this we have to search |
| 3230 | through the section table. */ |
| 3231 | Elf_Scn *scn = NULL; |
| 3232 | |
| 3233 | /* Get the section header string table index. */ |
| 3234 | size_t shstrndx; |
| 3235 | if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0)) |
| 3236 | error (EXIT_FAILURE, 0, |
| 3237 | gettext ("cannot get section header string table index")); |
| 3238 | |
| 3239 | while ((scn = elf_nextscn (ebl->elf, scn)) != NULL) |
| 3240 | { |
| 3241 | GElf_Shdr shdr_mem; |
| 3242 | GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); |
| 3243 | |
| 3244 | if (shdr != NULL && shdr->sh_type == SHT_GNU_LIBLIST) |
| 3245 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3246 | size_t sh_entsize = gelf_fsize (ebl->elf, ELF_T_LIB, 1, EV_CURRENT); |
| 3247 | int nentries = shdr->sh_size / sh_entsize; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3248 | printf (ngettext ("\ |
| 3249 | \nLibrary list section [%2zu] '%s' at offset %#0" PRIx64 " contains %d entry:\n", |
| 3250 | "\ |
| 3251 | \nLibrary list section [%2zu] '%s' at offset %#0" PRIx64 " contains %d entries:\n", |
| 3252 | nentries), |
| 3253 | elf_ndxscn (scn), |
| 3254 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name), |
| 3255 | shdr->sh_offset, |
| 3256 | nentries); |
| 3257 | |
| 3258 | Elf_Data *data = elf_getdata (scn, NULL); |
| 3259 | if (data == NULL) |
| 3260 | return; |
| 3261 | |
| 3262 | puts (gettext ("\ |
| 3263 | Library Time Stamp Checksum Version Flags")); |
| 3264 | |
| 3265 | for (int cnt = 0; cnt < nentries; ++cnt) |
| 3266 | { |
| 3267 | GElf_Lib lib_mem; |
| 3268 | GElf_Lib *lib = gelf_getlib (data, cnt, &lib_mem); |
| 3269 | if (unlikely (lib == NULL)) |
| 3270 | continue; |
| 3271 | |
| 3272 | time_t t = (time_t) lib->l_time_stamp; |
| 3273 | struct tm *tm = gmtime (&t); |
| 3274 | if (unlikely (tm == NULL)) |
| 3275 | continue; |
| 3276 | |
| 3277 | printf (" [%2d] %-29s %04u-%02u-%02uT%02u:%02u:%02u %08x %-7u %u\n", |
| 3278 | cnt, elf_strptr (ebl->elf, shdr->sh_link, lib->l_name), |
| 3279 | tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, |
| 3280 | tm->tm_hour, tm->tm_min, tm->tm_sec, |
| 3281 | (unsigned int) lib->l_checksum, |
| 3282 | (unsigned int) lib->l_version, |
| 3283 | (unsigned int) lib->l_flags); |
| 3284 | } |
| 3285 | } |
| 3286 | } |
| 3287 | } |
| 3288 | |
| 3289 | static void |
| 3290 | print_attributes (Ebl *ebl, const GElf_Ehdr *ehdr) |
| 3291 | { |
| 3292 | /* Find the object attributes sections. For this we have to search |
| 3293 | through the section table. */ |
| 3294 | Elf_Scn *scn = NULL; |
| 3295 | |
| 3296 | /* Get the section header string table index. */ |
| 3297 | size_t shstrndx; |
| 3298 | if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0)) |
| 3299 | error (EXIT_FAILURE, 0, |
| 3300 | gettext ("cannot get section header string table index")); |
| 3301 | |
| 3302 | while ((scn = elf_nextscn (ebl->elf, scn)) != NULL) |
| 3303 | { |
| 3304 | GElf_Shdr shdr_mem; |
| 3305 | GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); |
| 3306 | |
| 3307 | if (shdr == NULL || (shdr->sh_type != SHT_GNU_ATTRIBUTES |
| 3308 | && (shdr->sh_type != SHT_ARM_ATTRIBUTES |
| 3309 | || ehdr->e_machine != EM_ARM))) |
| 3310 | continue; |
| 3311 | |
| 3312 | printf (gettext ("\ |
| 3313 | \nObject attributes section [%2zu] '%s' of %" PRIu64 |
| 3314 | " bytes at offset %#0" PRIx64 ":\n"), |
| 3315 | elf_ndxscn (scn), |
| 3316 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name), |
| 3317 | shdr->sh_size, shdr->sh_offset); |
| 3318 | |
| 3319 | Elf_Data *data = elf_rawdata (scn, NULL); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3320 | if (unlikely (data == NULL || data->d_size == 0)) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3321 | return; |
| 3322 | |
| 3323 | const unsigned char *p = data->d_buf; |
| 3324 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3325 | /* There is only one 'version', A. */ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3326 | if (unlikely (*p++ != 'A')) |
| 3327 | return; |
| 3328 | |
| 3329 | fputs_unlocked (gettext (" Owner Size\n"), stdout); |
| 3330 | |
| 3331 | inline size_t left (void) |
| 3332 | { |
| 3333 | return (const unsigned char *) data->d_buf + data->d_size - p; |
| 3334 | } |
| 3335 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3336 | /* Loop over the sections. */ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3337 | while (left () >= 4) |
| 3338 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3339 | /* Section length. */ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3340 | uint32_t len; |
| 3341 | memcpy (&len, p, sizeof len); |
| 3342 | |
| 3343 | if (MY_ELFDATA != ehdr->e_ident[EI_DATA]) |
| 3344 | CONVERT (len); |
| 3345 | |
| 3346 | if (unlikely (len > left ())) |
| 3347 | break; |
| 3348 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3349 | /* Section vendor name. */ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3350 | const unsigned char *name = p + sizeof len; |
| 3351 | p += len; |
| 3352 | |
| 3353 | unsigned const char *q = memchr (name, '\0', len); |
| 3354 | if (unlikely (q == NULL)) |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3355 | break; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3356 | ++q; |
| 3357 | |
| 3358 | printf (gettext (" %-13s %4" PRIu32 "\n"), name, len); |
| 3359 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3360 | bool gnu_vendor = (q - name == sizeof "gnu" |
| 3361 | && !memcmp (name, "gnu", sizeof "gnu")); |
| 3362 | |
| 3363 | /* Loop over subsections. */ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3364 | if (shdr->sh_type != SHT_GNU_ATTRIBUTES |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3365 | || gnu_vendor) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3366 | while (q < p) |
| 3367 | { |
| 3368 | const unsigned char *const sub = q; |
| 3369 | |
| 3370 | unsigned int subsection_tag; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3371 | get_uleb128 (subsection_tag, q, p); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3372 | if (unlikely (q >= p)) |
| 3373 | break; |
| 3374 | |
| 3375 | uint32_t subsection_len; |
| 3376 | if (unlikely (p - sub < (ptrdiff_t) sizeof subsection_len)) |
| 3377 | break; |
| 3378 | |
| 3379 | memcpy (&subsection_len, q, sizeof subsection_len); |
| 3380 | |
| 3381 | if (MY_ELFDATA != ehdr->e_ident[EI_DATA]) |
| 3382 | CONVERT (subsection_len); |
| 3383 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3384 | /* Don't overflow, ptrdiff_t might be 32bits, but signed. */ |
| 3385 | if (unlikely (subsection_len == 0 |
| 3386 | || subsection_len >= (uint32_t) PTRDIFF_MAX |
| 3387 | || p - sub < (ptrdiff_t) subsection_len)) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3388 | break; |
| 3389 | |
| 3390 | const unsigned char *r = q + sizeof subsection_len; |
| 3391 | q = sub + subsection_len; |
| 3392 | |
| 3393 | switch (subsection_tag) |
| 3394 | { |
| 3395 | default: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3396 | /* Unknown subsection, print and skip. */ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3397 | printf (gettext (" %-4u %12" PRIu32 "\n"), |
| 3398 | subsection_tag, subsection_len); |
| 3399 | break; |
| 3400 | |
| 3401 | case 1: /* Tag_File */ |
| 3402 | printf (gettext (" File: %11" PRIu32 "\n"), |
| 3403 | subsection_len); |
| 3404 | |
| 3405 | while (r < q) |
| 3406 | { |
| 3407 | unsigned int tag; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3408 | get_uleb128 (tag, r, q); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3409 | if (unlikely (r >= q)) |
| 3410 | break; |
| 3411 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3412 | /* GNU style tags have either a uleb128 value, |
| 3413 | when lowest bit is not set, or a string |
| 3414 | when the lowest bit is set. |
| 3415 | "compatibility" (32) is special. It has |
| 3416 | both a string and a uleb128 value. For |
| 3417 | non-gnu we assume 6 till 31 only take ints. |
| 3418 | XXX see arm backend, do we need a separate |
| 3419 | hook? */ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3420 | uint64_t value = 0; |
| 3421 | const char *string = NULL; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3422 | if (tag == 32 || (tag & 1) == 0 |
| 3423 | || (! gnu_vendor && (tag > 5 && tag < 32))) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3424 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3425 | get_uleb128 (value, r, q); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3426 | if (r > q) |
| 3427 | break; |
| 3428 | } |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3429 | if (tag == 32 |
| 3430 | || ((tag & 1) != 0 |
| 3431 | && (gnu_vendor |
| 3432 | || (! gnu_vendor && tag > 32))) |
| 3433 | || (! gnu_vendor && tag > 3 && tag < 6)) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3434 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3435 | string = (const char *) r; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3436 | r = memchr (r, '\0', q - r); |
| 3437 | if (r == NULL) |
| 3438 | break; |
| 3439 | ++r; |
| 3440 | } |
| 3441 | |
| 3442 | const char *tag_name = NULL; |
| 3443 | const char *value_name = NULL; |
| 3444 | ebl_check_object_attribute (ebl, (const char *) name, |
| 3445 | tag, value, |
| 3446 | &tag_name, &value_name); |
| 3447 | |
| 3448 | if (tag_name != NULL) |
| 3449 | { |
| 3450 | if (tag == 32) |
| 3451 | printf (gettext (" %s: %" PRId64 ", %s\n"), |
| 3452 | tag_name, value, string); |
| 3453 | else if (string == NULL && value_name == NULL) |
| 3454 | printf (gettext (" %s: %" PRId64 "\n"), |
| 3455 | tag_name, value); |
| 3456 | else |
| 3457 | printf (gettext (" %s: %s\n"), |
| 3458 | tag_name, string ?: value_name); |
| 3459 | } |
| 3460 | else |
| 3461 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3462 | /* For "gnu" vendor 32 "compatibility" has |
| 3463 | already been handled above. */ |
| 3464 | assert (tag != 32 |
| 3465 | || strcmp ((const char *) name, "gnu")); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3466 | if (string == NULL) |
| 3467 | printf (gettext (" %u: %" PRId64 "\n"), |
| 3468 | tag, value); |
| 3469 | else |
| 3470 | printf (gettext (" %u: %s\n"), |
| 3471 | tag, string); |
| 3472 | } |
| 3473 | } |
| 3474 | } |
| 3475 | } |
| 3476 | } |
| 3477 | } |
| 3478 | } |
| 3479 | |
| 3480 | |
| 3481 | static char * |
| 3482 | format_dwarf_addr (Dwfl_Module *dwflmod, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3483 | int address_size, Dwarf_Addr address, Dwarf_Addr raw) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3484 | { |
| 3485 | /* See if there is a name we can give for this address. */ |
| 3486 | GElf_Sym sym; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3487 | GElf_Off off = 0; |
| 3488 | const char *name = (print_address_names && ! print_unresolved_addresses) |
| 3489 | ? dwfl_module_addrinfo (dwflmod, address, &off, &sym, NULL, NULL, NULL) |
| 3490 | : NULL; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3491 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3492 | const char *scn; |
| 3493 | if (print_unresolved_addresses) |
| 3494 | { |
| 3495 | address = raw; |
| 3496 | scn = NULL; |
| 3497 | } |
| 3498 | else |
| 3499 | { |
| 3500 | /* Relativize the address. */ |
| 3501 | int n = dwfl_module_relocations (dwflmod); |
| 3502 | int i = n < 1 ? -1 : dwfl_module_relocate_address (dwflmod, &address); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3503 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3504 | /* In an ET_REL file there is a section name to refer to. */ |
| 3505 | scn = (i < 0 ? NULL |
| 3506 | : dwfl_module_relocation_info (dwflmod, i, NULL)); |
| 3507 | } |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3508 | |
| 3509 | char *result; |
| 3510 | if ((name != NULL |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3511 | ? (off != 0 |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3512 | ? (scn != NULL |
| 3513 | ? (address_size == 0 |
| 3514 | ? asprintf (&result, |
| 3515 | gettext ("%s+%#" PRIx64 " <%s+%#" PRIx64 ">"), |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3516 | scn, address, name, off) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3517 | : asprintf (&result, |
| 3518 | gettext ("%s+%#0*" PRIx64 " <%s+%#" PRIx64 ">"), |
| 3519 | scn, 2 + address_size * 2, address, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3520 | name, off)) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3521 | : (address_size == 0 |
| 3522 | ? asprintf (&result, |
| 3523 | gettext ("%#" PRIx64 " <%s+%#" PRIx64 ">"), |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3524 | address, name, off) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3525 | : asprintf (&result, |
| 3526 | gettext ("%#0*" PRIx64 " <%s+%#" PRIx64 ">"), |
| 3527 | 2 + address_size * 2, address, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3528 | name, off))) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3529 | : (scn != NULL |
| 3530 | ? (address_size == 0 |
| 3531 | ? asprintf (&result, |
| 3532 | gettext ("%s+%#" PRIx64 " <%s>"), |
| 3533 | scn, address, name) |
| 3534 | : asprintf (&result, |
| 3535 | gettext ("%s+%#0*" PRIx64 " <%s>"), |
| 3536 | scn, 2 + address_size * 2, address, name)) |
| 3537 | : (address_size == 0 |
| 3538 | ? asprintf (&result, |
| 3539 | gettext ("%#" PRIx64 " <%s>"), |
| 3540 | address, name) |
| 3541 | : asprintf (&result, |
| 3542 | gettext ("%#0*" PRIx64 " <%s>"), |
| 3543 | 2 + address_size * 2, address, name)))) |
| 3544 | : (scn != NULL |
| 3545 | ? (address_size == 0 |
| 3546 | ? asprintf (&result, |
| 3547 | gettext ("%s+%#" PRIx64), |
| 3548 | scn, address) |
| 3549 | : asprintf (&result, |
| 3550 | gettext ("%s+%#0*" PRIx64), |
| 3551 | scn, 2 + address_size * 2, address)) |
| 3552 | : (address_size == 0 |
| 3553 | ? asprintf (&result, |
| 3554 | "%#" PRIx64, |
| 3555 | address) |
| 3556 | : asprintf (&result, |
| 3557 | "%#0*" PRIx64, |
| 3558 | 2 + address_size * 2, address)))) < 0) |
| 3559 | error (EXIT_FAILURE, 0, _("memory exhausted")); |
| 3560 | |
| 3561 | return result; |
| 3562 | } |
| 3563 | |
| 3564 | static const char * |
| 3565 | dwarf_tag_string (unsigned int tag) |
| 3566 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3567 | switch (tag) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3568 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3569 | #define ONE_KNOWN_DW_TAG(NAME, CODE) case CODE: return #NAME; |
| 3570 | ALL_KNOWN_DW_TAG |
| 3571 | #undef ONE_KNOWN_DW_TAG |
| 3572 | default: |
| 3573 | return NULL; |
| 3574 | } |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3575 | } |
| 3576 | |
| 3577 | |
| 3578 | static const char * |
| 3579 | dwarf_attr_string (unsigned int attrnum) |
| 3580 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3581 | switch (attrnum) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3582 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3583 | #define ONE_KNOWN_DW_AT(NAME, CODE) case CODE: return #NAME; |
| 3584 | ALL_KNOWN_DW_AT |
| 3585 | #undef ONE_KNOWN_DW_AT |
| 3586 | default: |
| 3587 | return NULL; |
| 3588 | } |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3589 | } |
| 3590 | |
| 3591 | |
| 3592 | static const char * |
| 3593 | dwarf_form_string (unsigned int form) |
| 3594 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3595 | switch (form) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3596 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3597 | #define ONE_KNOWN_DW_FORM_DESC(NAME, CODE, DESC) ONE_KNOWN_DW_FORM (NAME, CODE) |
| 3598 | #define ONE_KNOWN_DW_FORM(NAME, CODE) case CODE: return #NAME; |
| 3599 | ALL_KNOWN_DW_FORM |
| 3600 | #undef ONE_KNOWN_DW_FORM |
| 3601 | #undef ONE_KNOWN_DW_FORM_DESC |
| 3602 | default: |
| 3603 | return NULL; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3604 | } |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3605 | } |
| 3606 | |
| 3607 | |
| 3608 | static const char * |
| 3609 | dwarf_lang_string (unsigned int lang) |
| 3610 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3611 | switch (lang) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3612 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3613 | #define ONE_KNOWN_DW_LANG_DESC(NAME, CODE, DESC) case CODE: return #NAME; |
| 3614 | ALL_KNOWN_DW_LANG |
| 3615 | #undef ONE_KNOWN_DW_LANG_DESC |
| 3616 | default: |
| 3617 | return NULL; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3618 | } |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3619 | } |
| 3620 | |
| 3621 | |
| 3622 | static const char * |
| 3623 | dwarf_inline_string (unsigned int code) |
| 3624 | { |
| 3625 | static const char *const known[] = |
| 3626 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3627 | #define ONE_KNOWN_DW_INL(NAME, CODE) [CODE] = #NAME, |
| 3628 | ALL_KNOWN_DW_INL |
| 3629 | #undef ONE_KNOWN_DW_INL |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3630 | }; |
| 3631 | |
| 3632 | if (likely (code < sizeof (known) / sizeof (known[0]))) |
| 3633 | return known[code]; |
| 3634 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3635 | return NULL; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3636 | } |
| 3637 | |
| 3638 | |
| 3639 | static const char * |
| 3640 | dwarf_encoding_string (unsigned int code) |
| 3641 | { |
| 3642 | static const char *const known[] = |
| 3643 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3644 | #define ONE_KNOWN_DW_ATE(NAME, CODE) [CODE] = #NAME, |
| 3645 | ALL_KNOWN_DW_ATE |
| 3646 | #undef ONE_KNOWN_DW_ATE |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3647 | }; |
| 3648 | |
| 3649 | if (likely (code < sizeof (known) / sizeof (known[0]))) |
| 3650 | return known[code]; |
| 3651 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3652 | return NULL; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3653 | } |
| 3654 | |
| 3655 | |
| 3656 | static const char * |
| 3657 | dwarf_access_string (unsigned int code) |
| 3658 | { |
| 3659 | static const char *const known[] = |
| 3660 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3661 | #define ONE_KNOWN_DW_ACCESS(NAME, CODE) [CODE] = #NAME, |
| 3662 | ALL_KNOWN_DW_ACCESS |
| 3663 | #undef ONE_KNOWN_DW_ACCESS |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3664 | }; |
| 3665 | |
| 3666 | if (likely (code < sizeof (known) / sizeof (known[0]))) |
| 3667 | return known[code]; |
| 3668 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3669 | return NULL; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3670 | } |
| 3671 | |
| 3672 | |
| 3673 | static const char * |
| 3674 | dwarf_visibility_string (unsigned int code) |
| 3675 | { |
| 3676 | static const char *const known[] = |
| 3677 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3678 | #define ONE_KNOWN_DW_VIS(NAME, CODE) [CODE] = #NAME, |
| 3679 | ALL_KNOWN_DW_VIS |
| 3680 | #undef ONE_KNOWN_DW_VIS |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3681 | }; |
| 3682 | |
| 3683 | if (likely (code < sizeof (known) / sizeof (known[0]))) |
| 3684 | return known[code]; |
| 3685 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3686 | return NULL; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3687 | } |
| 3688 | |
| 3689 | |
| 3690 | static const char * |
| 3691 | dwarf_virtuality_string (unsigned int code) |
| 3692 | { |
| 3693 | static const char *const known[] = |
| 3694 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3695 | #define ONE_KNOWN_DW_VIRTUALITY(NAME, CODE) [CODE] = #NAME, |
| 3696 | ALL_KNOWN_DW_VIRTUALITY |
| 3697 | #undef ONE_KNOWN_DW_VIRTUALITY |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3698 | }; |
| 3699 | |
| 3700 | if (likely (code < sizeof (known) / sizeof (known[0]))) |
| 3701 | return known[code]; |
| 3702 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3703 | return NULL; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3704 | } |
| 3705 | |
| 3706 | |
| 3707 | static const char * |
| 3708 | dwarf_identifier_case_string (unsigned int code) |
| 3709 | { |
| 3710 | static const char *const known[] = |
| 3711 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3712 | #define ONE_KNOWN_DW_ID(NAME, CODE) [CODE] = #NAME, |
| 3713 | ALL_KNOWN_DW_ID |
| 3714 | #undef ONE_KNOWN_DW_ID |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3715 | }; |
| 3716 | |
| 3717 | if (likely (code < sizeof (known) / sizeof (known[0]))) |
| 3718 | return known[code]; |
| 3719 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3720 | return NULL; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3721 | } |
| 3722 | |
| 3723 | |
| 3724 | static const char * |
| 3725 | dwarf_calling_convention_string (unsigned int code) |
| 3726 | { |
| 3727 | static const char *const known[] = |
| 3728 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3729 | #define ONE_KNOWN_DW_CC(NAME, CODE) [CODE] = #NAME, |
| 3730 | ALL_KNOWN_DW_CC |
| 3731 | #undef ONE_KNOWN_DW_CC |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3732 | }; |
| 3733 | |
| 3734 | if (likely (code < sizeof (known) / sizeof (known[0]))) |
| 3735 | return known[code]; |
| 3736 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3737 | return NULL; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3738 | } |
| 3739 | |
| 3740 | |
| 3741 | static const char * |
| 3742 | dwarf_ordering_string (unsigned int code) |
| 3743 | { |
| 3744 | static const char *const known[] = |
| 3745 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3746 | #define ONE_KNOWN_DW_ORD(NAME, CODE) [CODE] = #NAME, |
| 3747 | ALL_KNOWN_DW_ORD |
| 3748 | #undef ONE_KNOWN_DW_ORD |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3749 | }; |
| 3750 | |
| 3751 | if (likely (code < sizeof (known) / sizeof (known[0]))) |
| 3752 | return known[code]; |
| 3753 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3754 | return NULL; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3755 | } |
| 3756 | |
| 3757 | |
| 3758 | static const char * |
| 3759 | dwarf_discr_list_string (unsigned int code) |
| 3760 | { |
| 3761 | static const char *const known[] = |
| 3762 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3763 | #define ONE_KNOWN_DW_DSC(NAME, CODE) [CODE] = #NAME, |
| 3764 | ALL_KNOWN_DW_DSC |
| 3765 | #undef ONE_KNOWN_DW_DSC |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3766 | }; |
| 3767 | |
| 3768 | if (likely (code < sizeof (known) / sizeof (known[0]))) |
| 3769 | return known[code]; |
| 3770 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3771 | return NULL; |
| 3772 | } |
| 3773 | |
| 3774 | |
| 3775 | static const char * |
| 3776 | dwarf_locexpr_opcode_string (unsigned int code) |
| 3777 | { |
| 3778 | static const char *const known[] = |
| 3779 | { |
| 3780 | /* Normally we can't affort building huge table of 64K entries, |
| 3781 | most of them zero, just because there are a couple defined |
| 3782 | values at the far end. In case of opcodes, it's OK. */ |
| 3783 | #define ONE_KNOWN_DW_OP_DESC(NAME, CODE, DESC) ONE_KNOWN_DW_OP (NAME, CODE) |
| 3784 | #define ONE_KNOWN_DW_OP(NAME, CODE) [CODE] = #NAME, |
| 3785 | ALL_KNOWN_DW_OP |
| 3786 | #undef ONE_KNOWN_DW_OP |
| 3787 | #undef ONE_KNOWN_DW_OP_DESC |
| 3788 | }; |
| 3789 | |
| 3790 | if (likely (code < sizeof (known) / sizeof (known[0]))) |
| 3791 | return known[code]; |
| 3792 | |
| 3793 | return NULL; |
| 3794 | } |
| 3795 | |
| 3796 | |
| 3797 | /* Used by all dwarf_foo_name functions. */ |
| 3798 | static const char * |
| 3799 | string_or_unknown (const char *known, unsigned int code, |
| 3800 | unsigned int lo_user, unsigned int hi_user, |
| 3801 | bool print_unknown_num) |
| 3802 | { |
| 3803 | static char unknown_buf[20]; |
| 3804 | |
| 3805 | if (likely (known != NULL)) |
| 3806 | return known; |
| 3807 | |
| 3808 | if (lo_user != 0 && code >= lo_user && code <= hi_user) |
| 3809 | { |
| 3810 | snprintf (unknown_buf, sizeof unknown_buf, "lo_user+%#x", |
| 3811 | code - lo_user); |
| 3812 | return unknown_buf; |
| 3813 | } |
| 3814 | |
| 3815 | if (print_unknown_num) |
| 3816 | { |
| 3817 | snprintf (unknown_buf, sizeof unknown_buf, "??? (%#x)", code); |
| 3818 | return unknown_buf; |
| 3819 | } |
| 3820 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3821 | return "???"; |
| 3822 | } |
| 3823 | |
| 3824 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3825 | static const char * |
| 3826 | dwarf_tag_name (unsigned int tag) |
| 3827 | { |
| 3828 | const char *ret = dwarf_tag_string (tag); |
| 3829 | return string_or_unknown (ret, tag, DW_TAG_lo_user, DW_TAG_hi_user, true); |
| 3830 | } |
| 3831 | |
| 3832 | static const char * |
| 3833 | dwarf_attr_name (unsigned int attr) |
| 3834 | { |
| 3835 | const char *ret = dwarf_attr_string (attr); |
| 3836 | return string_or_unknown (ret, attr, DW_AT_lo_user, DW_AT_hi_user, true); |
| 3837 | } |
| 3838 | |
| 3839 | |
| 3840 | static const char * |
| 3841 | dwarf_form_name (unsigned int form) |
| 3842 | { |
| 3843 | const char *ret = dwarf_form_string (form); |
| 3844 | return string_or_unknown (ret, form, 0, 0, true); |
| 3845 | } |
| 3846 | |
| 3847 | |
| 3848 | static const char * |
| 3849 | dwarf_lang_name (unsigned int lang) |
| 3850 | { |
| 3851 | const char *ret = dwarf_lang_string (lang); |
| 3852 | return string_or_unknown (ret, lang, DW_LANG_lo_user, DW_LANG_hi_user, false); |
| 3853 | } |
| 3854 | |
| 3855 | |
| 3856 | static const char * |
| 3857 | dwarf_inline_name (unsigned int code) |
| 3858 | { |
| 3859 | const char *ret = dwarf_inline_string (code); |
| 3860 | return string_or_unknown (ret, code, 0, 0, false); |
| 3861 | } |
| 3862 | |
| 3863 | |
| 3864 | static const char * |
| 3865 | dwarf_encoding_name (unsigned int code) |
| 3866 | { |
| 3867 | const char *ret = dwarf_encoding_string (code); |
| 3868 | return string_or_unknown (ret, code, DW_ATE_lo_user, DW_ATE_hi_user, false); |
| 3869 | } |
| 3870 | |
| 3871 | |
| 3872 | static const char * |
| 3873 | dwarf_access_name (unsigned int code) |
| 3874 | { |
| 3875 | const char *ret = dwarf_access_string (code); |
| 3876 | return string_or_unknown (ret, code, 0, 0, false); |
| 3877 | } |
| 3878 | |
| 3879 | |
| 3880 | static const char * |
| 3881 | dwarf_visibility_name (unsigned int code) |
| 3882 | { |
| 3883 | const char *ret = dwarf_visibility_string (code); |
| 3884 | return string_or_unknown (ret, code, 0, 0, false); |
| 3885 | } |
| 3886 | |
| 3887 | |
| 3888 | static const char * |
| 3889 | dwarf_virtuality_name (unsigned int code) |
| 3890 | { |
| 3891 | const char *ret = dwarf_virtuality_string (code); |
| 3892 | return string_or_unknown (ret, code, 0, 0, false); |
| 3893 | } |
| 3894 | |
| 3895 | |
| 3896 | static const char * |
| 3897 | dwarf_identifier_case_name (unsigned int code) |
| 3898 | { |
| 3899 | const char *ret = dwarf_identifier_case_string (code); |
| 3900 | return string_or_unknown (ret, code, 0, 0, false); |
| 3901 | } |
| 3902 | |
| 3903 | |
| 3904 | static const char * |
| 3905 | dwarf_calling_convention_name (unsigned int code) |
| 3906 | { |
| 3907 | const char *ret = dwarf_calling_convention_string (code); |
| 3908 | return string_or_unknown (ret, code, DW_CC_lo_user, DW_CC_hi_user, false); |
| 3909 | } |
| 3910 | |
| 3911 | |
| 3912 | static const char * |
| 3913 | dwarf_ordering_name (unsigned int code) |
| 3914 | { |
| 3915 | const char *ret = dwarf_ordering_string (code); |
| 3916 | return string_or_unknown (ret, code, 0, 0, false); |
| 3917 | } |
| 3918 | |
| 3919 | |
| 3920 | static const char * |
| 3921 | dwarf_discr_list_name (unsigned int code) |
| 3922 | { |
| 3923 | const char *ret = dwarf_discr_list_string (code); |
| 3924 | return string_or_unknown (ret, code, 0, 0, false); |
| 3925 | } |
| 3926 | |
| 3927 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3928 | static void |
| 3929 | print_block (size_t n, const void *block) |
| 3930 | { |
| 3931 | if (n == 0) |
| 3932 | puts (_("empty block")); |
| 3933 | else |
| 3934 | { |
| 3935 | printf (_("%zu byte block:"), n); |
| 3936 | const unsigned char *data = block; |
| 3937 | do |
| 3938 | printf (" %02x", *data++); |
| 3939 | while (--n > 0); |
| 3940 | putchar ('\n'); |
| 3941 | } |
| 3942 | } |
| 3943 | |
| 3944 | static void |
| 3945 | print_ops (Dwfl_Module *dwflmod, Dwarf *dbg, int indent, int indentrest, |
| 3946 | unsigned int vers, unsigned int addrsize, unsigned int offset_size, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3947 | struct Dwarf_CU *cu, Dwarf_Word len, const unsigned char *data) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3948 | { |
| 3949 | const unsigned int ref_size = vers < 3 ? addrsize : offset_size; |
| 3950 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3951 | if (len == 0) |
| 3952 | { |
| 3953 | printf ("%*s(empty)\n", indent, ""); |
| 3954 | return; |
| 3955 | } |
| 3956 | |
| 3957 | #define NEED(n) if (len < (Dwarf_Word) (n)) goto invalid |
| 3958 | #define CONSUME(n) NEED (n); else len -= (n) |
| 3959 | |
| 3960 | Dwarf_Word offset = 0; |
| 3961 | while (len-- > 0) |
| 3962 | { |
| 3963 | uint_fast8_t op = *data++; |
| 3964 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3965 | const char *op_name = dwarf_locexpr_opcode_string (op); |
| 3966 | if (unlikely (op_name == NULL)) |
| 3967 | { |
| 3968 | static char buf[20]; |
| 3969 | if (op >= DW_OP_lo_user) |
| 3970 | snprintf (buf, sizeof buf, "lo_user+%#x", op - DW_OP_lo_user); |
| 3971 | else |
| 3972 | snprintf (buf, sizeof buf, "??? (%#x)", op); |
| 3973 | op_name = buf; |
| 3974 | } |
| 3975 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3976 | switch (op) |
| 3977 | { |
| 3978 | case DW_OP_addr:; |
| 3979 | /* Address operand. */ |
| 3980 | Dwarf_Word addr; |
| 3981 | NEED (addrsize); |
| 3982 | if (addrsize == 4) |
| 3983 | addr = read_4ubyte_unaligned (dbg, data); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3984 | else if (addrsize == 8) |
| 3985 | addr = read_8ubyte_unaligned (dbg, data); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3986 | else |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3987 | goto invalid; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3988 | data += addrsize; |
| 3989 | CONSUME (addrsize); |
| 3990 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3991 | char *a = format_dwarf_addr (dwflmod, 0, addr, addr); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3992 | printf ("%*s[%4" PRIuMAX "] %s %s\n", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 3993 | indent, "", (uintmax_t) offset, op_name, a); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 3994 | free (a); |
| 3995 | |
| 3996 | offset += 1 + addrsize; |
| 3997 | break; |
| 3998 | |
| 3999 | case DW_OP_call_ref: |
| 4000 | /* Offset operand. */ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4001 | if (ref_size != 4 && ref_size != 8) |
| 4002 | goto invalid; /* Cannot be used in CFA. */ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4003 | NEED (ref_size); |
| 4004 | if (ref_size == 4) |
| 4005 | addr = read_4ubyte_unaligned (dbg, data); |
| 4006 | else |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4007 | addr = read_8ubyte_unaligned (dbg, data); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4008 | data += ref_size; |
| 4009 | CONSUME (ref_size); |
| 4010 | |
| 4011 | printf ("%*s[%4" PRIuMAX "] %s %#" PRIxMAX "\n", |
| 4012 | indent, "", (uintmax_t) offset, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4013 | op_name, (uintmax_t) addr); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4014 | offset += 1 + ref_size; |
| 4015 | break; |
| 4016 | |
| 4017 | case DW_OP_deref_size: |
| 4018 | case DW_OP_xderef_size: |
| 4019 | case DW_OP_pick: |
| 4020 | case DW_OP_const1u: |
| 4021 | // XXX value might be modified by relocation |
| 4022 | NEED (1); |
| 4023 | printf ("%*s[%4" PRIuMAX "] %s %" PRIu8 "\n", |
| 4024 | indent, "", (uintmax_t) offset, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4025 | op_name, *((uint8_t *) data)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4026 | ++data; |
| 4027 | --len; |
| 4028 | offset += 2; |
| 4029 | break; |
| 4030 | |
| 4031 | case DW_OP_const2u: |
| 4032 | NEED (2); |
| 4033 | // XXX value might be modified by relocation |
| 4034 | printf ("%*s[%4" PRIuMAX "] %s %" PRIu16 "\n", |
| 4035 | indent, "", (uintmax_t) offset, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4036 | op_name, read_2ubyte_unaligned (dbg, data)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4037 | CONSUME (2); |
| 4038 | data += 2; |
| 4039 | offset += 3; |
| 4040 | break; |
| 4041 | |
| 4042 | case DW_OP_const4u: |
| 4043 | NEED (4); |
| 4044 | // XXX value might be modified by relocation |
| 4045 | printf ("%*s[%4" PRIuMAX "] %s %" PRIu32 "\n", |
| 4046 | indent, "", (uintmax_t) offset, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4047 | op_name, read_4ubyte_unaligned (dbg, data)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4048 | CONSUME (4); |
| 4049 | data += 4; |
| 4050 | offset += 5; |
| 4051 | break; |
| 4052 | |
| 4053 | case DW_OP_const8u: |
| 4054 | NEED (8); |
| 4055 | // XXX value might be modified by relocation |
| 4056 | printf ("%*s[%4" PRIuMAX "] %s %" PRIu64 "\n", |
| 4057 | indent, "", (uintmax_t) offset, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4058 | op_name, (uint64_t) read_8ubyte_unaligned (dbg, data)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4059 | CONSUME (8); |
| 4060 | data += 8; |
| 4061 | offset += 9; |
| 4062 | break; |
| 4063 | |
| 4064 | case DW_OP_const1s: |
| 4065 | NEED (1); |
| 4066 | // XXX value might be modified by relocation |
| 4067 | printf ("%*s[%4" PRIuMAX "] %s %" PRId8 "\n", |
| 4068 | indent, "", (uintmax_t) offset, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4069 | op_name, *((int8_t *) data)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4070 | ++data; |
| 4071 | --len; |
| 4072 | offset += 2; |
| 4073 | break; |
| 4074 | |
| 4075 | case DW_OP_const2s: |
| 4076 | NEED (2); |
| 4077 | // XXX value might be modified by relocation |
| 4078 | printf ("%*s[%4" PRIuMAX "] %s %" PRId16 "\n", |
| 4079 | indent, "", (uintmax_t) offset, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4080 | op_name, read_2sbyte_unaligned (dbg, data)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4081 | CONSUME (2); |
| 4082 | data += 2; |
| 4083 | offset += 3; |
| 4084 | break; |
| 4085 | |
| 4086 | case DW_OP_const4s: |
| 4087 | NEED (4); |
| 4088 | // XXX value might be modified by relocation |
| 4089 | printf ("%*s[%4" PRIuMAX "] %s %" PRId32 "\n", |
| 4090 | indent, "", (uintmax_t) offset, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4091 | op_name, read_4sbyte_unaligned (dbg, data)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4092 | CONSUME (4); |
| 4093 | data += 4; |
| 4094 | offset += 5; |
| 4095 | break; |
| 4096 | |
| 4097 | case DW_OP_const8s: |
| 4098 | NEED (8); |
| 4099 | // XXX value might be modified by relocation |
| 4100 | printf ("%*s[%4" PRIuMAX "] %s %" PRId64 "\n", |
| 4101 | indent, "", (uintmax_t) offset, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4102 | op_name, read_8sbyte_unaligned (dbg, data)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4103 | CONSUME (8); |
| 4104 | data += 8; |
| 4105 | offset += 9; |
| 4106 | break; |
| 4107 | |
| 4108 | case DW_OP_piece: |
| 4109 | case DW_OP_regx: |
| 4110 | case DW_OP_plus_uconst: |
| 4111 | case DW_OP_constu:; |
| 4112 | const unsigned char *start = data; |
| 4113 | uint64_t uleb; |
| 4114 | NEED (1); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4115 | get_uleb128 (uleb, data, data + len); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4116 | printf ("%*s[%4" PRIuMAX "] %s %" PRIu64 "\n", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4117 | indent, "", (uintmax_t) offset, op_name, uleb); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4118 | CONSUME (data - start); |
| 4119 | offset += 1 + (data - start); |
| 4120 | break; |
| 4121 | |
| 4122 | case DW_OP_bit_piece: |
| 4123 | start = data; |
| 4124 | uint64_t uleb2; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4125 | NEED (1); |
| 4126 | get_uleb128 (uleb, data, data + len); |
| 4127 | NEED (1); |
| 4128 | get_uleb128 (uleb2, data, data + len); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4129 | printf ("%*s[%4" PRIuMAX "] %s %" PRIu64 ", %" PRIu64 "\n", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4130 | indent, "", (uintmax_t) offset, op_name, uleb, uleb2); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4131 | CONSUME (data - start); |
| 4132 | offset += 1 + (data - start); |
| 4133 | break; |
| 4134 | |
| 4135 | case DW_OP_fbreg: |
| 4136 | case DW_OP_breg0 ... DW_OP_breg31: |
| 4137 | case DW_OP_consts: |
| 4138 | start = data; |
| 4139 | int64_t sleb; |
| 4140 | NEED (1); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4141 | get_sleb128 (sleb, data, data + len); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4142 | printf ("%*s[%4" PRIuMAX "] %s %" PRId64 "\n", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4143 | indent, "", (uintmax_t) offset, op_name, sleb); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4144 | CONSUME (data - start); |
| 4145 | offset += 1 + (data - start); |
| 4146 | break; |
| 4147 | |
| 4148 | case DW_OP_bregx: |
| 4149 | start = data; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4150 | NEED (1); |
| 4151 | get_uleb128 (uleb, data, data + len); |
| 4152 | NEED (1); |
| 4153 | get_sleb128 (sleb, data, data + len); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4154 | printf ("%*s[%4" PRIuMAX "] %s %" PRIu64 " %" PRId64 "\n", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4155 | indent, "", (uintmax_t) offset, op_name, uleb, sleb); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4156 | CONSUME (data - start); |
| 4157 | offset += 1 + (data - start); |
| 4158 | break; |
| 4159 | |
| 4160 | case DW_OP_call2: |
| 4161 | NEED (2); |
| 4162 | printf ("%*s[%4" PRIuMAX "] %s %" PRIu16 "\n", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4163 | indent, "", (uintmax_t) offset, op_name, |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4164 | read_2ubyte_unaligned (dbg, data)); |
| 4165 | CONSUME (2); |
| 4166 | offset += 3; |
| 4167 | break; |
| 4168 | |
| 4169 | case DW_OP_call4: |
| 4170 | NEED (4); |
| 4171 | printf ("%*s[%4" PRIuMAX "] %s %" PRIu32 "\n", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4172 | indent, "", (uintmax_t) offset, op_name, |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4173 | read_4ubyte_unaligned (dbg, data)); |
| 4174 | CONSUME (4); |
| 4175 | offset += 5; |
| 4176 | break; |
| 4177 | |
| 4178 | case DW_OP_skip: |
| 4179 | case DW_OP_bra: |
| 4180 | NEED (2); |
| 4181 | printf ("%*s[%4" PRIuMAX "] %s %" PRIuMAX "\n", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4182 | indent, "", (uintmax_t) offset, op_name, |
| 4183 | (uintmax_t) (offset + read_2sbyte_unaligned (dbg, data) + 3)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4184 | CONSUME (2); |
| 4185 | data += 2; |
| 4186 | offset += 3; |
| 4187 | break; |
| 4188 | |
| 4189 | case DW_OP_implicit_value: |
| 4190 | start = data; |
| 4191 | NEED (1); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4192 | get_uleb128 (uleb, data, data + len); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4193 | printf ("%*s[%4" PRIuMAX "] %s: ", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4194 | indent, "", (uintmax_t) offset, op_name); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4195 | NEED (uleb); |
| 4196 | print_block (uleb, data); |
| 4197 | data += uleb; |
| 4198 | CONSUME (data - start); |
| 4199 | offset += 1 + (data - start); |
| 4200 | break; |
| 4201 | |
| 4202 | case DW_OP_GNU_implicit_pointer: |
| 4203 | /* DIE offset operand. */ |
| 4204 | start = data; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4205 | NEED (ref_size); |
| 4206 | if (ref_size != 4 && ref_size != 8) |
| 4207 | goto invalid; /* Cannot be used in CFA. */ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4208 | if (ref_size == 4) |
| 4209 | addr = read_4ubyte_unaligned (dbg, data); |
| 4210 | else |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4211 | addr = read_8ubyte_unaligned (dbg, data); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4212 | data += ref_size; |
| 4213 | /* Byte offset operand. */ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4214 | NEED (1); |
| 4215 | get_sleb128 (sleb, data, data + len); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4216 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4217 | printf ("%*s[%4" PRIuMAX "] %s [%6" PRIxMAX "] %+" PRId64 "\n", |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4218 | indent, "", (intmax_t) offset, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4219 | op_name, (uintmax_t) addr, sleb); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4220 | CONSUME (data - start); |
| 4221 | offset += 1 + (data - start); |
| 4222 | break; |
| 4223 | |
| 4224 | case DW_OP_GNU_entry_value: |
| 4225 | /* Size plus expression block. */ |
| 4226 | start = data; |
| 4227 | NEED (1); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4228 | get_uleb128 (uleb, data, data + len); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4229 | printf ("%*s[%4" PRIuMAX "] %s:\n", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4230 | indent, "", (uintmax_t) offset, op_name); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4231 | NEED (uleb); |
| 4232 | print_ops (dwflmod, dbg, indent + 6, indent + 6, vers, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4233 | addrsize, offset_size, cu, uleb, data); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4234 | data += uleb; |
| 4235 | CONSUME (data - start); |
| 4236 | offset += 1 + (data - start); |
| 4237 | break; |
| 4238 | |
| 4239 | case DW_OP_GNU_const_type: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4240 | /* uleb128 CU relative DW_TAG_base_type DIE offset, 1-byte |
| 4241 | unsigned size plus block. */ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4242 | start = data; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4243 | NEED (1); |
| 4244 | get_uleb128 (uleb, data, data + len); |
| 4245 | if (! print_unresolved_addresses && cu != NULL) |
| 4246 | uleb += cu->start; |
| 4247 | NEED (1); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4248 | uint8_t usize = *(uint8_t *) data++; |
| 4249 | NEED (usize); |
| 4250 | printf ("%*s[%4" PRIuMAX "] %s [%6" PRIxMAX "] ", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4251 | indent, "", (uintmax_t) offset, op_name, uleb); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4252 | print_block (usize, data); |
| 4253 | data += usize; |
| 4254 | CONSUME (data - start); |
| 4255 | offset += 1 + (data - start); |
| 4256 | break; |
| 4257 | |
| 4258 | case DW_OP_GNU_regval_type: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4259 | /* uleb128 register number, uleb128 CU relative |
| 4260 | DW_TAG_base_type DIE offset. */ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4261 | start = data; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4262 | NEED (1); |
| 4263 | get_uleb128 (uleb, data, data + len); |
| 4264 | NEED (1); |
| 4265 | get_uleb128 (uleb2, data, data + len); |
| 4266 | if (! print_unresolved_addresses && cu != NULL) |
| 4267 | uleb2 += cu->start; |
| 4268 | printf ("%*s[%4" PRIuMAX "] %s %" PRIu64 " [%6" PRIx64 "]\n", |
| 4269 | indent, "", (uintmax_t) offset, op_name, uleb, uleb2); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4270 | CONSUME (data - start); |
| 4271 | offset += 1 + (data - start); |
| 4272 | break; |
| 4273 | |
| 4274 | case DW_OP_GNU_deref_type: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4275 | /* 1-byte unsigned size of value, uleb128 CU relative |
| 4276 | DW_TAG_base_type DIE offset. */ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4277 | start = data; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4278 | NEED (1); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4279 | usize = *(uint8_t *) data++; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4280 | NEED (1); |
| 4281 | get_uleb128 (uleb, data, data + len); |
| 4282 | if (! print_unresolved_addresses && cu != NULL) |
| 4283 | uleb += cu->start; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4284 | printf ("%*s[%4" PRIuMAX "] %s %" PRIu8 " [%6" PRIxMAX "]\n", |
| 4285 | indent, "", (uintmax_t) offset, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4286 | op_name, usize, uleb); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4287 | CONSUME (data - start); |
| 4288 | offset += 1 + (data - start); |
| 4289 | break; |
| 4290 | |
| 4291 | case DW_OP_GNU_convert: |
| 4292 | case DW_OP_GNU_reinterpret: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4293 | /* uleb128 CU relative offset to DW_TAG_base_type, or zero |
| 4294 | for conversion to untyped. */ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4295 | start = data; |
| 4296 | NEED (1); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4297 | get_uleb128 (uleb, data, data + len); |
| 4298 | if (uleb != 0 && ! print_unresolved_addresses && cu != NULL) |
| 4299 | uleb += cu->start; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4300 | printf ("%*s[%4" PRIuMAX "] %s [%6" PRIxMAX "]\n", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4301 | indent, "", (uintmax_t) offset, op_name, uleb); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4302 | CONSUME (data - start); |
| 4303 | offset += 1 + (data - start); |
| 4304 | break; |
| 4305 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4306 | case DW_OP_GNU_parameter_ref: |
| 4307 | /* 4 byte CU relative reference to the abstract optimized away |
| 4308 | DW_TAG_formal_parameter. */ |
| 4309 | NEED (4); |
| 4310 | uintmax_t param_off = (uintmax_t) read_4ubyte_unaligned (dbg, data); |
| 4311 | if (! print_unresolved_addresses && cu != NULL) |
| 4312 | param_off += cu->start; |
| 4313 | printf ("%*s[%4" PRIuMAX "] %s [%6" PRIxMAX "]\n", |
| 4314 | indent, "", (uintmax_t) offset, op_name, param_off); |
| 4315 | CONSUME (4); |
| 4316 | data += 4; |
| 4317 | offset += 5; |
| 4318 | break; |
| 4319 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4320 | default: |
| 4321 | /* No Operand. */ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4322 | printf ("%*s[%4" PRIuMAX "] %s\n", |
| 4323 | indent, "", (uintmax_t) offset, op_name); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4324 | ++offset; |
| 4325 | break; |
| 4326 | } |
| 4327 | |
| 4328 | indent = indentrest; |
| 4329 | continue; |
| 4330 | |
| 4331 | invalid: |
| 4332 | printf (gettext ("%*s[%4" PRIuMAX "] %s <TRUNCATED>\n"), |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4333 | indent, "", (uintmax_t) offset, op_name); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4334 | break; |
| 4335 | } |
| 4336 | } |
| 4337 | |
| 4338 | |
| 4339 | struct listptr |
| 4340 | { |
| 4341 | Dwarf_Off offset:(64 - 3); |
| 4342 | bool addr64:1; |
| 4343 | bool dwarf64:1; |
| 4344 | bool warned:1; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4345 | struct Dwarf_CU *cu; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4346 | }; |
| 4347 | |
| 4348 | #define listptr_offset_size(p) ((p)->dwarf64 ? 8 : 4) |
| 4349 | #define listptr_address_size(p) ((p)->addr64 ? 8 : 4) |
| 4350 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4351 | static Dwarf_Addr |
| 4352 | listptr_base (struct listptr *p) |
| 4353 | { |
| 4354 | Dwarf_Addr base; |
| 4355 | Dwarf_Die cu = CUDIE (p->cu); |
| 4356 | /* Find the base address of the compilation unit. It will normally |
| 4357 | be specified by DW_AT_low_pc. In DWARF-3 draft 4, the base |
| 4358 | address could be overridden by DW_AT_entry_pc. It's been |
| 4359 | removed, but GCC emits DW_AT_entry_pc and not DW_AT_lowpc for |
| 4360 | compilation units with discontinuous ranges. */ |
| 4361 | if (unlikely (dwarf_lowpc (&cu, &base) != 0)) |
| 4362 | { |
| 4363 | Dwarf_Attribute attr_mem; |
| 4364 | if (dwarf_formaddr (dwarf_attr (&cu, DW_AT_entry_pc, &attr_mem), |
| 4365 | &base) != 0) |
| 4366 | base = 0; |
| 4367 | } |
| 4368 | return base; |
| 4369 | } |
| 4370 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4371 | static int |
| 4372 | compare_listptr (const void *a, const void *b, void *arg) |
| 4373 | { |
| 4374 | const char *name = arg; |
| 4375 | struct listptr *p1 = (void *) a; |
| 4376 | struct listptr *p2 = (void *) b; |
| 4377 | |
| 4378 | if (p1->offset < p2->offset) |
| 4379 | return -1; |
| 4380 | if (p1->offset > p2->offset) |
| 4381 | return 1; |
| 4382 | |
| 4383 | if (!p1->warned && !p2->warned) |
| 4384 | { |
| 4385 | if (p1->addr64 != p2->addr64) |
| 4386 | { |
| 4387 | p1->warned = p2->warned = true; |
| 4388 | error (0, 0, |
| 4389 | gettext ("%s %#" PRIx64 " used with different address sizes"), |
| 4390 | name, (uint64_t) p1->offset); |
| 4391 | } |
| 4392 | if (p1->dwarf64 != p2->dwarf64) |
| 4393 | { |
| 4394 | p1->warned = p2->warned = true; |
| 4395 | error (0, 0, |
| 4396 | gettext ("%s %#" PRIx64 " used with different offset sizes"), |
| 4397 | name, (uint64_t) p1->offset); |
| 4398 | } |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4399 | if (listptr_base (p1) != listptr_base (p2)) |
| 4400 | { |
| 4401 | p1->warned = p2->warned = true; |
| 4402 | error (0, 0, |
| 4403 | gettext ("%s %#" PRIx64 " used with different base addresses"), |
| 4404 | name, (uint64_t) p1->offset); |
| 4405 | } |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4406 | } |
| 4407 | |
| 4408 | return 0; |
| 4409 | } |
| 4410 | |
| 4411 | struct listptr_table |
| 4412 | { |
| 4413 | size_t n; |
| 4414 | size_t alloc; |
| 4415 | struct listptr *table; |
| 4416 | }; |
| 4417 | |
| 4418 | static struct listptr_table known_loclistptr; |
| 4419 | static struct listptr_table known_rangelistptr; |
| 4420 | |
| 4421 | static void |
| 4422 | reset_listptr (struct listptr_table *table) |
| 4423 | { |
| 4424 | free (table->table); |
| 4425 | table->table = NULL; |
| 4426 | table->n = table->alloc = 0; |
| 4427 | } |
| 4428 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4429 | /* Returns false if offset doesn't fit. See struct listptr. */ |
| 4430 | static bool |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4431 | notice_listptr (enum section_e section, struct listptr_table *table, |
| 4432 | uint_fast8_t address_size, uint_fast8_t offset_size, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4433 | struct Dwarf_CU *cu, Dwarf_Off offset) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4434 | { |
| 4435 | if (print_debug_sections & section) |
| 4436 | { |
| 4437 | if (table->n == table->alloc) |
| 4438 | { |
| 4439 | if (table->alloc == 0) |
| 4440 | table->alloc = 128; |
| 4441 | else |
| 4442 | table->alloc *= 2; |
| 4443 | table->table = xrealloc (table->table, |
| 4444 | table->alloc * sizeof table->table[0]); |
| 4445 | } |
| 4446 | |
| 4447 | struct listptr *p = &table->table[table->n++]; |
| 4448 | |
| 4449 | *p = (struct listptr) |
| 4450 | { |
| 4451 | .addr64 = address_size == 8, |
| 4452 | .dwarf64 = offset_size == 8, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4453 | .offset = offset, |
| 4454 | .cu = cu |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4455 | }; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4456 | |
| 4457 | if (p->offset != offset) |
| 4458 | { |
| 4459 | table->n--; |
| 4460 | return false; |
| 4461 | } |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4462 | } |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4463 | return true; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4464 | } |
| 4465 | |
| 4466 | static void |
| 4467 | sort_listptr (struct listptr_table *table, const char *name) |
| 4468 | { |
| 4469 | if (table->n > 0) |
| 4470 | qsort_r (table->table, table->n, sizeof table->table[0], |
| 4471 | &compare_listptr, (void *) name); |
| 4472 | } |
| 4473 | |
| 4474 | static bool |
| 4475 | skip_listptr_hole (struct listptr_table *table, size_t *idxp, |
| 4476 | uint_fast8_t *address_sizep, uint_fast8_t *offset_sizep, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4477 | Dwarf_Addr *base, struct Dwarf_CU **cu, ptrdiff_t offset, |
| 4478 | unsigned char **readp, unsigned char *endp) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4479 | { |
| 4480 | if (table->n == 0) |
| 4481 | return false; |
| 4482 | |
| 4483 | while (*idxp < table->n && table->table[*idxp].offset < (Dwarf_Off) offset) |
| 4484 | ++*idxp; |
| 4485 | |
| 4486 | struct listptr *p = &table->table[*idxp]; |
| 4487 | |
| 4488 | if (*idxp == table->n |
| 4489 | || p->offset >= (Dwarf_Off) (endp - *readp + offset)) |
| 4490 | { |
| 4491 | *readp = endp; |
| 4492 | printf (gettext (" [%6tx] <UNUSED GARBAGE IN REST OF SECTION>\n"), |
| 4493 | offset); |
| 4494 | return true; |
| 4495 | } |
| 4496 | |
| 4497 | if (p->offset != (Dwarf_Off) offset) |
| 4498 | { |
| 4499 | *readp += p->offset - offset; |
| 4500 | printf (gettext (" [%6tx] <UNUSED GARBAGE> ... %" PRIu64 " bytes ...\n"), |
| 4501 | offset, (Dwarf_Off) p->offset - offset); |
| 4502 | return true; |
| 4503 | } |
| 4504 | |
| 4505 | if (address_sizep != NULL) |
| 4506 | *address_sizep = listptr_address_size (p); |
| 4507 | if (offset_sizep != NULL) |
| 4508 | *offset_sizep = listptr_offset_size (p); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4509 | if (base != NULL) |
| 4510 | *base = listptr_base (p); |
| 4511 | if (cu != NULL) |
| 4512 | *cu = p->cu; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4513 | |
| 4514 | return false; |
| 4515 | } |
| 4516 | |
| 4517 | |
| 4518 | static void |
| 4519 | print_debug_abbrev_section (Dwfl_Module *dwflmod __attribute__ ((unused)), |
| 4520 | Ebl *ebl, GElf_Ehdr *ehdr, |
| 4521 | Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg) |
| 4522 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4523 | const size_t sh_size = (dbg->sectiondata[IDX_debug_abbrev] ? |
| 4524 | dbg->sectiondata[IDX_debug_abbrev]->d_size : 0); |
| 4525 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4526 | printf (gettext ("\nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n" |
| 4527 | " [ Code]\n"), |
| 4528 | elf_ndxscn (scn), section_name (ebl, ehdr, shdr), |
| 4529 | (uint64_t) shdr->sh_offset); |
| 4530 | |
| 4531 | Dwarf_Off offset = 0; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4532 | while (offset < sh_size) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4533 | { |
| 4534 | printf (gettext ("\nAbbreviation section at offset %" PRIu64 ":\n"), |
| 4535 | offset); |
| 4536 | |
| 4537 | while (1) |
| 4538 | { |
| 4539 | size_t length; |
| 4540 | Dwarf_Abbrev abbrev; |
| 4541 | |
| 4542 | int res = dwarf_offabbrev (dbg, offset, &length, &abbrev); |
| 4543 | if (res != 0) |
| 4544 | { |
| 4545 | if (unlikely (res < 0)) |
| 4546 | { |
| 4547 | printf (gettext ("\ |
| 4548 | *** error while reading abbreviation: %s\n"), |
| 4549 | dwarf_errmsg (-1)); |
| 4550 | return; |
| 4551 | } |
| 4552 | |
| 4553 | /* This is the NUL byte at the end of the section. */ |
| 4554 | ++offset; |
| 4555 | break; |
| 4556 | } |
| 4557 | |
| 4558 | /* We know these calls can never fail. */ |
| 4559 | unsigned int code = dwarf_getabbrevcode (&abbrev); |
| 4560 | unsigned int tag = dwarf_getabbrevtag (&abbrev); |
| 4561 | int has_children = dwarf_abbrevhaschildren (&abbrev); |
| 4562 | |
| 4563 | printf (gettext (" [%5u] offset: %" PRId64 |
| 4564 | ", children: %s, tag: %s\n"), |
| 4565 | code, (int64_t) offset, |
| 4566 | has_children ? gettext ("yes") : gettext ("no"), |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4567 | dwarf_tag_name (tag)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4568 | |
| 4569 | size_t cnt = 0; |
| 4570 | unsigned int name; |
| 4571 | unsigned int form; |
| 4572 | Dwarf_Off enoffset; |
| 4573 | while (dwarf_getabbrevattr (&abbrev, cnt, |
| 4574 | &name, &form, &enoffset) == 0) |
| 4575 | { |
| 4576 | printf (" attr: %s, form: %s, offset: %#" PRIx64 "\n", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4577 | dwarf_attr_name (name), dwarf_form_name (form), |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4578 | (uint64_t) enoffset); |
| 4579 | |
| 4580 | ++cnt; |
| 4581 | } |
| 4582 | |
| 4583 | offset += length; |
| 4584 | } |
| 4585 | } |
| 4586 | } |
| 4587 | |
| 4588 | |
| 4589 | /* Print content of DWARF .debug_aranges section. We fortunately do |
| 4590 | not have to know a bit about the structure of the section, libdwarf |
| 4591 | takes care of it. */ |
| 4592 | static void |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4593 | print_decoded_aranges_section (Ebl *ebl, GElf_Ehdr *ehdr, Elf_Scn *scn, |
| 4594 | GElf_Shdr *shdr, Dwarf *dbg) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4595 | { |
| 4596 | Dwarf_Aranges *aranges; |
| 4597 | size_t cnt; |
| 4598 | if (unlikely (dwarf_getaranges (dbg, &aranges, &cnt) != 0)) |
| 4599 | { |
| 4600 | error (0, 0, gettext ("cannot get .debug_aranges content: %s"), |
| 4601 | dwarf_errmsg (-1)); |
| 4602 | return; |
| 4603 | } |
| 4604 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4605 | GElf_Shdr glink_mem; |
| 4606 | GElf_Shdr *glink; |
| 4607 | glink = gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link), &glink_mem); |
| 4608 | if (glink == NULL) |
| 4609 | { |
| 4610 | error (0, 0, gettext ("invalid sh_link value in section %Zu"), |
| 4611 | elf_ndxscn (scn)); |
| 4612 | return; |
| 4613 | } |
| 4614 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4615 | printf (ngettext ("\ |
| 4616 | \nDWARF section [%2zu] '%s' at offset %#" PRIx64 " contains %zu entry:\n", |
| 4617 | "\ |
| 4618 | \nDWARF section [%2zu] '%s' at offset %#" PRIx64 " contains %zu entries:\n", |
| 4619 | cnt), |
| 4620 | elf_ndxscn (scn), section_name (ebl, ehdr, shdr), |
| 4621 | (uint64_t) shdr->sh_offset, cnt); |
| 4622 | |
| 4623 | /* Compute floor(log16(cnt)). */ |
| 4624 | size_t tmp = cnt; |
| 4625 | int digits = 1; |
| 4626 | while (tmp >= 16) |
| 4627 | { |
| 4628 | ++digits; |
| 4629 | tmp >>= 4; |
| 4630 | } |
| 4631 | |
| 4632 | for (size_t n = 0; n < cnt; ++n) |
| 4633 | { |
| 4634 | Dwarf_Arange *runp = dwarf_onearange (aranges, n); |
| 4635 | if (unlikely (runp == NULL)) |
| 4636 | { |
| 4637 | printf ("cannot get arange %zu: %s\n", n, dwarf_errmsg (-1)); |
| 4638 | return; |
| 4639 | } |
| 4640 | |
| 4641 | Dwarf_Addr start; |
| 4642 | Dwarf_Word length; |
| 4643 | Dwarf_Off offset; |
| 4644 | |
| 4645 | if (unlikely (dwarf_getarangeinfo (runp, &start, &length, &offset) != 0)) |
| 4646 | printf (gettext (" [%*zu] ???\n"), digits, n); |
| 4647 | else |
| 4648 | printf (gettext (" [%*zu] start: %0#*" PRIx64 |
| 4649 | ", length: %5" PRIu64 ", CU DIE offset: %6" |
| 4650 | PRId64 "\n"), |
| 4651 | digits, n, ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 10 : 18, |
| 4652 | (uint64_t) start, (uint64_t) length, (int64_t) offset); |
| 4653 | } |
| 4654 | } |
| 4655 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4656 | |
| 4657 | /* Print content of DWARF .debug_aranges section. */ |
| 4658 | static void |
| 4659 | print_debug_aranges_section (Dwfl_Module *dwflmod __attribute__ ((unused)), |
| 4660 | Ebl *ebl, GElf_Ehdr *ehdr, Elf_Scn *scn, |
| 4661 | GElf_Shdr *shdr, Dwarf *dbg) |
| 4662 | { |
| 4663 | if (decodedaranges) |
| 4664 | { |
| 4665 | print_decoded_aranges_section (ebl, ehdr, scn, shdr, dbg); |
| 4666 | return; |
| 4667 | } |
| 4668 | |
| 4669 | Elf_Data *data = dbg->sectiondata[IDX_debug_aranges]; |
| 4670 | |
| 4671 | if (unlikely (data == NULL)) |
| 4672 | { |
| 4673 | error (0, 0, gettext ("cannot get .debug_aranges content: %s"), |
| 4674 | elf_errmsg (-1)); |
| 4675 | return; |
| 4676 | } |
| 4677 | |
| 4678 | printf (gettext ("\ |
| 4679 | \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"), |
| 4680 | elf_ndxscn (scn), section_name (ebl, ehdr, shdr), |
| 4681 | (uint64_t) shdr->sh_offset); |
| 4682 | |
| 4683 | const unsigned char *readp = data->d_buf; |
| 4684 | const unsigned char *readendp = readp + data->d_size; |
| 4685 | |
| 4686 | while (readp < readendp) |
| 4687 | { |
| 4688 | const unsigned char *hdrstart = readp; |
| 4689 | size_t start_offset = hdrstart - (const unsigned char *) data->d_buf; |
| 4690 | |
| 4691 | printf (gettext ("\nTable at offset %Zu:\n"), start_offset); |
| 4692 | if (readp + 4 > readendp) |
| 4693 | { |
| 4694 | invalid_data: |
| 4695 | error (0, 0, gettext ("invalid data in section [%zu] '%s'"), |
| 4696 | elf_ndxscn (scn), section_name (ebl, ehdr, shdr)); |
| 4697 | return; |
| 4698 | } |
| 4699 | |
| 4700 | Dwarf_Word length = read_4ubyte_unaligned_inc (dbg, readp); |
| 4701 | unsigned int length_bytes = 4; |
| 4702 | if (length == DWARF3_LENGTH_64_BIT) |
| 4703 | { |
| 4704 | if (readp + 8 > readendp) |
| 4705 | goto invalid_data; |
| 4706 | length = read_8ubyte_unaligned_inc (dbg, readp); |
| 4707 | length_bytes = 8; |
| 4708 | } |
| 4709 | |
| 4710 | const unsigned char *nexthdr = readp + length; |
| 4711 | printf (gettext ("\n Length: %6" PRIu64 "\n"), |
| 4712 | (uint64_t) length); |
| 4713 | |
| 4714 | if (unlikely (length > (size_t) (readendp - readp))) |
| 4715 | goto invalid_data; |
| 4716 | |
| 4717 | if (length == 0) |
| 4718 | continue; |
| 4719 | |
| 4720 | if (readp + 2 > readendp) |
| 4721 | goto invalid_data; |
| 4722 | uint_fast16_t version = read_2ubyte_unaligned_inc (dbg, readp); |
| 4723 | printf (gettext (" DWARF version: %6" PRIuFAST16 "\n"), |
| 4724 | version); |
| 4725 | if (version != 2) |
| 4726 | { |
| 4727 | error (0, 0, gettext ("unsupported aranges version")); |
| 4728 | goto next_table; |
| 4729 | } |
| 4730 | |
| 4731 | Dwarf_Word offset; |
| 4732 | if (readp + length_bytes > readendp) |
| 4733 | goto invalid_data; |
| 4734 | if (length_bytes == 8) |
| 4735 | offset = read_8ubyte_unaligned_inc (dbg, readp); |
| 4736 | else |
| 4737 | offset = read_4ubyte_unaligned_inc (dbg, readp); |
| 4738 | printf (gettext (" CU offset: %6" PRIx64 "\n"), |
| 4739 | (uint64_t) offset); |
| 4740 | |
| 4741 | if (readp + 1 > readendp) |
| 4742 | goto invalid_data; |
| 4743 | unsigned int address_size = *readp++; |
| 4744 | printf (gettext (" Address size: %6" PRIu64 "\n"), |
| 4745 | (uint64_t) address_size); |
| 4746 | if (address_size != 4 && address_size != 8) |
| 4747 | { |
| 4748 | error (0, 0, gettext ("unsupported address size")); |
| 4749 | goto next_table; |
| 4750 | } |
| 4751 | |
| 4752 | unsigned int segment_size = *readp++; |
| 4753 | printf (gettext (" Segment size: %6" PRIu64 "\n\n"), |
| 4754 | (uint64_t) segment_size); |
| 4755 | if (segment_size != 0 && segment_size != 4 && segment_size != 8) |
| 4756 | { |
| 4757 | error (0, 0, gettext ("unsupported segment size")); |
| 4758 | goto next_table; |
| 4759 | } |
| 4760 | |
| 4761 | /* Round the address to the next multiple of 2*address_size. */ |
| 4762 | readp += ((2 * address_size - ((readp - hdrstart) % (2 * address_size))) |
| 4763 | % (2 * address_size)); |
| 4764 | |
| 4765 | while (readp < nexthdr) |
| 4766 | { |
| 4767 | Dwarf_Word range_address; |
| 4768 | Dwarf_Word range_length; |
| 4769 | Dwarf_Word segment = 0; |
| 4770 | if (readp + 2 * address_size + segment_size > readendp) |
| 4771 | goto invalid_data; |
| 4772 | if (address_size == 4) |
| 4773 | { |
| 4774 | range_address = read_4ubyte_unaligned_inc (dbg, readp); |
| 4775 | range_length = read_4ubyte_unaligned_inc (dbg, readp); |
| 4776 | } |
| 4777 | else |
| 4778 | { |
| 4779 | range_address = read_8ubyte_unaligned_inc (dbg, readp); |
| 4780 | range_length = read_8ubyte_unaligned_inc (dbg, readp); |
| 4781 | } |
| 4782 | |
| 4783 | if (segment_size == 4) |
| 4784 | segment = read_4ubyte_unaligned_inc (dbg, readp); |
| 4785 | else if (segment_size == 8) |
| 4786 | segment = read_8ubyte_unaligned_inc (dbg, readp); |
| 4787 | |
| 4788 | if (range_address == 0 && range_length == 0 && segment == 0) |
| 4789 | break; |
| 4790 | |
| 4791 | char *b = format_dwarf_addr (dwflmod, address_size, range_address, |
| 4792 | range_address); |
| 4793 | char *e = format_dwarf_addr (dwflmod, address_size, |
| 4794 | range_address + range_length - 1, |
| 4795 | range_length); |
| 4796 | if (segment_size != 0) |
| 4797 | printf (gettext (" %s..%s (%" PRIx64 ")\n"), b, e, |
| 4798 | (uint64_t) segment); |
| 4799 | else |
| 4800 | printf (gettext (" %s..%s\n"), b, e); |
| 4801 | free (b); |
| 4802 | free (e); |
| 4803 | } |
| 4804 | |
| 4805 | next_table: |
| 4806 | if (readp != nexthdr) |
| 4807 | { |
| 4808 | size_t padding = nexthdr - readp; |
| 4809 | printf (gettext (" %Zu padding bytes\n"), padding); |
| 4810 | readp = nexthdr; |
| 4811 | } |
| 4812 | } |
| 4813 | } |
| 4814 | |
| 4815 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4816 | /* Print content of DWARF .debug_ranges section. */ |
| 4817 | static void |
| 4818 | print_debug_ranges_section (Dwfl_Module *dwflmod, |
| 4819 | Ebl *ebl, GElf_Ehdr *ehdr, |
| 4820 | Elf_Scn *scn, GElf_Shdr *shdr, |
| 4821 | Dwarf *dbg) |
| 4822 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4823 | Elf_Data *data = dbg->sectiondata[IDX_debug_ranges]; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4824 | |
| 4825 | if (unlikely (data == NULL)) |
| 4826 | { |
| 4827 | error (0, 0, gettext ("cannot get .debug_ranges content: %s"), |
| 4828 | elf_errmsg (-1)); |
| 4829 | return; |
| 4830 | } |
| 4831 | |
| 4832 | printf (gettext ("\ |
| 4833 | \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"), |
| 4834 | elf_ndxscn (scn), section_name (ebl, ehdr, shdr), |
| 4835 | (uint64_t) shdr->sh_offset); |
| 4836 | |
| 4837 | sort_listptr (&known_rangelistptr, "rangelistptr"); |
| 4838 | size_t listptr_idx = 0; |
| 4839 | |
| 4840 | uint_fast8_t address_size = ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8; |
| 4841 | |
| 4842 | bool first = true; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4843 | Dwarf_Addr base = 0; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4844 | unsigned char *const endp = (unsigned char *) data->d_buf + data->d_size; |
| 4845 | unsigned char *readp = data->d_buf; |
| 4846 | while (readp < endp) |
| 4847 | { |
| 4848 | ptrdiff_t offset = readp - (unsigned char *) data->d_buf; |
| 4849 | |
| 4850 | if (first && skip_listptr_hole (&known_rangelistptr, &listptr_idx, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4851 | &address_size, NULL, &base, NULL, |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4852 | offset, &readp, endp)) |
| 4853 | continue; |
| 4854 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4855 | if (unlikely (data->d_size - offset < (size_t) address_size * 2)) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4856 | { |
| 4857 | printf (gettext (" [%6tx] <INVALID DATA>\n"), offset); |
| 4858 | break; |
| 4859 | } |
| 4860 | |
| 4861 | Dwarf_Addr begin; |
| 4862 | Dwarf_Addr end; |
| 4863 | if (address_size == 8) |
| 4864 | { |
| 4865 | begin = read_8ubyte_unaligned_inc (dbg, readp); |
| 4866 | end = read_8ubyte_unaligned_inc (dbg, readp); |
| 4867 | } |
| 4868 | else |
| 4869 | { |
| 4870 | begin = read_4ubyte_unaligned_inc (dbg, readp); |
| 4871 | end = read_4ubyte_unaligned_inc (dbg, readp); |
| 4872 | if (begin == (Dwarf_Addr) (uint32_t) -1) |
| 4873 | begin = (Dwarf_Addr) -1l; |
| 4874 | } |
| 4875 | |
| 4876 | if (begin == (Dwarf_Addr) -1l) /* Base address entry. */ |
| 4877 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4878 | char *b = format_dwarf_addr (dwflmod, address_size, end, end); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4879 | printf (gettext (" [%6tx] base address %s\n"), offset, b); |
| 4880 | free (b); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4881 | base = end; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4882 | } |
| 4883 | else if (begin == 0 && end == 0) /* End of list entry. */ |
| 4884 | { |
| 4885 | if (first) |
| 4886 | printf (gettext (" [%6tx] empty list\n"), offset); |
| 4887 | first = true; |
| 4888 | } |
| 4889 | else |
| 4890 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4891 | char *b = format_dwarf_addr (dwflmod, address_size, base + begin, |
| 4892 | begin); |
| 4893 | char *e = format_dwarf_addr (dwflmod, address_size, base + end, |
| 4894 | end); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4895 | /* We have an address range entry. */ |
| 4896 | if (first) /* First address range entry in a list. */ |
| 4897 | printf (gettext (" [%6tx] %s..%s\n"), offset, b, e); |
| 4898 | else |
| 4899 | printf (gettext (" %s..%s\n"), b, e); |
| 4900 | free (b); |
| 4901 | free (e); |
| 4902 | |
| 4903 | first = false; |
| 4904 | } |
| 4905 | } |
| 4906 | } |
| 4907 | |
| 4908 | #define REGNAMESZ 16 |
| 4909 | static const char * |
| 4910 | register_info (Ebl *ebl, unsigned int regno, const Ebl_Register_Location *loc, |
| 4911 | char name[REGNAMESZ], int *bits, int *type) |
| 4912 | { |
| 4913 | const char *set; |
| 4914 | const char *pfx; |
| 4915 | int ignore; |
| 4916 | ssize_t n = ebl_register_info (ebl, regno, name, REGNAMESZ, &pfx, &set, |
| 4917 | bits ?: &ignore, type ?: &ignore); |
| 4918 | if (n <= 0) |
| 4919 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4920 | if (loc != NULL) |
| 4921 | snprintf (name, REGNAMESZ, "reg%u", loc->regno); |
| 4922 | else |
| 4923 | snprintf (name, REGNAMESZ, "??? 0x%x", regno); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4924 | if (bits != NULL) |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4925 | *bits = loc != NULL ? loc->bits : 0; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4926 | if (type != NULL) |
| 4927 | *type = DW_ATE_unsigned; |
| 4928 | set = "??? unrecognized"; |
| 4929 | } |
| 4930 | else |
| 4931 | { |
| 4932 | if (bits != NULL && *bits <= 0) |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4933 | *bits = loc != NULL ? loc->bits : 0; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4934 | if (type != NULL && *type == DW_ATE_void) |
| 4935 | *type = DW_ATE_unsigned; |
| 4936 | |
| 4937 | } |
| 4938 | return set; |
| 4939 | } |
| 4940 | |
| 4941 | static void |
| 4942 | print_cfa_program (const unsigned char *readp, const unsigned char *const endp, |
| 4943 | Dwarf_Word vma_base, unsigned int code_align, |
| 4944 | int data_align, |
| 4945 | unsigned int version, unsigned int ptr_size, |
| 4946 | Dwfl_Module *dwflmod, Ebl *ebl, Dwarf *dbg) |
| 4947 | { |
| 4948 | char regnamebuf[REGNAMESZ]; |
| 4949 | const char *regname (unsigned int regno) |
| 4950 | { |
| 4951 | register_info (ebl, regno, NULL, regnamebuf, NULL, NULL); |
| 4952 | return regnamebuf; |
| 4953 | } |
| 4954 | |
| 4955 | puts ("\n Program:"); |
| 4956 | Dwarf_Word pc = vma_base; |
| 4957 | while (readp < endp) |
| 4958 | { |
| 4959 | unsigned int opcode = *readp++; |
| 4960 | |
| 4961 | if (opcode < DW_CFA_advance_loc) |
| 4962 | /* Extended opcode. */ |
| 4963 | switch (opcode) |
| 4964 | { |
| 4965 | uint64_t op1; |
| 4966 | int64_t sop1; |
| 4967 | uint64_t op2; |
| 4968 | int64_t sop2; |
| 4969 | |
| 4970 | case DW_CFA_nop: |
| 4971 | puts (" nop"); |
| 4972 | break; |
| 4973 | case DW_CFA_set_loc: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4974 | if ((uint64_t) (endp - readp) < 1) |
| 4975 | goto invalid; |
| 4976 | get_uleb128 (op1, readp, endp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4977 | op1 += vma_base; |
| 4978 | printf (" set_loc %" PRIu64 "\n", op1 * code_align); |
| 4979 | break; |
| 4980 | case DW_CFA_advance_loc1: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4981 | if ((uint64_t) (endp - readp) < 1) |
| 4982 | goto invalid; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4983 | printf (" advance_loc1 %u to %#" PRIx64 "\n", |
| 4984 | *readp, pc += *readp * code_align); |
| 4985 | ++readp; |
| 4986 | break; |
| 4987 | case DW_CFA_advance_loc2: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4988 | if ((uint64_t) (endp - readp) < 2) |
| 4989 | goto invalid; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4990 | op1 = read_2ubyte_unaligned_inc (dbg, readp); |
| 4991 | printf (" advance_loc2 %" PRIu64 " to %#" PRIx64 "\n", |
| 4992 | op1, pc += op1 * code_align); |
| 4993 | break; |
| 4994 | case DW_CFA_advance_loc4: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 4995 | if ((uint64_t) (endp - readp) < 4) |
| 4996 | goto invalid; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 4997 | op1 = read_4ubyte_unaligned_inc (dbg, readp); |
| 4998 | printf (" advance_loc4 %" PRIu64 " to %#" PRIx64 "\n", |
| 4999 | op1, pc += op1 * code_align); |
| 5000 | break; |
| 5001 | case DW_CFA_offset_extended: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5002 | if ((uint64_t) (endp - readp) < 1) |
| 5003 | goto invalid; |
| 5004 | get_uleb128 (op1, readp, endp); |
| 5005 | if ((uint64_t) (endp - readp) < 1) |
| 5006 | goto invalid; |
| 5007 | get_uleb128 (op2, readp, endp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5008 | printf (" offset_extended r%" PRIu64 " (%s) at cfa%+" PRId64 |
| 5009 | "\n", |
| 5010 | op1, regname (op1), op2 * data_align); |
| 5011 | break; |
| 5012 | case DW_CFA_restore_extended: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5013 | if ((uint64_t) (endp - readp) < 1) |
| 5014 | goto invalid; |
| 5015 | get_uleb128 (op1, readp, endp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5016 | printf (" restore_extended r%" PRIu64 " (%s)\n", |
| 5017 | op1, regname (op1)); |
| 5018 | break; |
| 5019 | case DW_CFA_undefined: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5020 | if ((uint64_t) (endp - readp) < 1) |
| 5021 | goto invalid; |
| 5022 | get_uleb128 (op1, readp, endp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5023 | printf (" undefined r%" PRIu64 " (%s)\n", op1, regname (op1)); |
| 5024 | break; |
| 5025 | case DW_CFA_same_value: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5026 | if ((uint64_t) (endp - readp) < 1) |
| 5027 | goto invalid; |
| 5028 | get_uleb128 (op1, readp, endp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5029 | printf (" same_value r%" PRIu64 " (%s)\n", op1, regname (op1)); |
| 5030 | break; |
| 5031 | case DW_CFA_register: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5032 | if ((uint64_t) (endp - readp) < 1) |
| 5033 | goto invalid; |
| 5034 | get_uleb128 (op1, readp, endp); |
| 5035 | if ((uint64_t) (endp - readp) < 1) |
| 5036 | goto invalid; |
| 5037 | get_uleb128 (op2, readp, endp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5038 | printf (" register r%" PRIu64 " (%s) in r%" PRIu64 " (%s)\n", |
| 5039 | op1, regname (op1), op2, regname (op2)); |
| 5040 | break; |
| 5041 | case DW_CFA_remember_state: |
| 5042 | puts (" remember_state"); |
| 5043 | break; |
| 5044 | case DW_CFA_restore_state: |
| 5045 | puts (" restore_state"); |
| 5046 | break; |
| 5047 | case DW_CFA_def_cfa: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5048 | if ((uint64_t) (endp - readp) < 1) |
| 5049 | goto invalid; |
| 5050 | get_uleb128 (op1, readp, endp); |
| 5051 | if ((uint64_t) (endp - readp) < 1) |
| 5052 | goto invalid; |
| 5053 | get_uleb128 (op2, readp, endp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5054 | printf (" def_cfa r%" PRIu64 " (%s) at offset %" PRIu64 "\n", |
| 5055 | op1, regname (op1), op2); |
| 5056 | break; |
| 5057 | case DW_CFA_def_cfa_register: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5058 | if ((uint64_t) (endp - readp) < 1) |
| 5059 | goto invalid; |
| 5060 | get_uleb128 (op1, readp, endp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5061 | printf (" def_cfa_register r%" PRIu64 " (%s)\n", |
| 5062 | op1, regname (op1)); |
| 5063 | break; |
| 5064 | case DW_CFA_def_cfa_offset: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5065 | if ((uint64_t) (endp - readp) < 1) |
| 5066 | goto invalid; |
| 5067 | get_uleb128 (op1, readp, endp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5068 | printf (" def_cfa_offset %" PRIu64 "\n", op1); |
| 5069 | break; |
| 5070 | case DW_CFA_def_cfa_expression: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5071 | if ((uint64_t) (endp - readp) < 1) |
| 5072 | goto invalid; |
| 5073 | get_uleb128 (op1, readp, endp); /* Length of DW_FORM_block. */ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5074 | printf (" def_cfa_expression %" PRIu64 "\n", op1); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5075 | if ((uint64_t) (endp - readp) < op1) |
| 5076 | { |
| 5077 | invalid: |
| 5078 | fputs (gettext (" <INVALID DATA>\n"), stdout); |
| 5079 | return; |
| 5080 | } |
| 5081 | print_ops (dwflmod, dbg, 10, 10, version, ptr_size, 0, NULL, |
| 5082 | op1, readp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5083 | readp += op1; |
| 5084 | break; |
| 5085 | case DW_CFA_expression: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5086 | if ((uint64_t) (endp - readp) < 1) |
| 5087 | goto invalid; |
| 5088 | get_uleb128 (op1, readp, endp); |
| 5089 | if ((uint64_t) (endp - readp) < 1) |
| 5090 | goto invalid; |
| 5091 | get_uleb128 (op2, readp, endp); /* Length of DW_FORM_block. */ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5092 | printf (" expression r%" PRIu64 " (%s) \n", |
| 5093 | op1, regname (op1)); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5094 | if ((uint64_t) (endp - readp) < op2) |
| 5095 | goto invalid; |
| 5096 | print_ops (dwflmod, dbg, 10, 10, version, ptr_size, 0, NULL, |
| 5097 | op2, readp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5098 | readp += op2; |
| 5099 | break; |
| 5100 | case DW_CFA_offset_extended_sf: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5101 | if ((uint64_t) (endp - readp) < 1) |
| 5102 | goto invalid; |
| 5103 | get_uleb128 (op1, readp, endp); |
| 5104 | if ((uint64_t) (endp - readp) < 1) |
| 5105 | goto invalid; |
| 5106 | get_sleb128 (sop2, readp, endp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5107 | printf (" offset_extended_sf r%" PRIu64 " (%s) at cfa%+" |
| 5108 | PRId64 "\n", |
| 5109 | op1, regname (op1), sop2 * data_align); |
| 5110 | break; |
| 5111 | case DW_CFA_def_cfa_sf: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5112 | if ((uint64_t) (endp - readp) < 1) |
| 5113 | goto invalid; |
| 5114 | get_uleb128 (op1, readp, endp); |
| 5115 | if ((uint64_t) (endp - readp) < 1) |
| 5116 | goto invalid; |
| 5117 | get_sleb128 (sop2, readp, endp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5118 | printf (" def_cfa_sf r%" PRIu64 " (%s) at offset %" PRId64 "\n", |
| 5119 | op1, regname (op1), sop2 * data_align); |
| 5120 | break; |
| 5121 | case DW_CFA_def_cfa_offset_sf: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5122 | if ((uint64_t) (endp - readp) < 1) |
| 5123 | goto invalid; |
| 5124 | get_sleb128 (sop1, readp, endp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5125 | printf (" def_cfa_offset_sf %" PRId64 "\n", sop1 * data_align); |
| 5126 | break; |
| 5127 | case DW_CFA_val_offset: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5128 | if ((uint64_t) (endp - readp) < 1) |
| 5129 | goto invalid; |
| 5130 | get_uleb128 (op1, readp, endp); |
| 5131 | if ((uint64_t) (endp - readp) < 1) |
| 5132 | goto invalid; |
| 5133 | get_uleb128 (op2, readp, endp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5134 | printf (" val_offset %" PRIu64 " at offset %" PRIu64 "\n", |
| 5135 | op1, op2 * data_align); |
| 5136 | break; |
| 5137 | case DW_CFA_val_offset_sf: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5138 | if ((uint64_t) (endp - readp) < 1) |
| 5139 | goto invalid; |
| 5140 | get_uleb128 (op1, readp, endp); |
| 5141 | if ((uint64_t) (endp - readp) < 1) |
| 5142 | goto invalid; |
| 5143 | get_sleb128 (sop2, readp, endp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5144 | printf (" val_offset_sf %" PRIu64 " at offset %" PRId64 "\n", |
| 5145 | op1, sop2 * data_align); |
| 5146 | break; |
| 5147 | case DW_CFA_val_expression: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5148 | if ((uint64_t) (endp - readp) < 1) |
| 5149 | goto invalid; |
| 5150 | get_uleb128 (op1, readp, endp); |
| 5151 | if ((uint64_t) (endp - readp) < 1) |
| 5152 | goto invalid; |
| 5153 | get_uleb128 (op2, readp, endp); /* Length of DW_FORM_block. */ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5154 | printf (" val_expression r%" PRIu64 " (%s)\n", |
| 5155 | op1, regname (op1)); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5156 | if ((uint64_t) (endp - readp) < op2) |
| 5157 | goto invalid; |
| 5158 | print_ops (dwflmod, dbg, 10, 10, version, ptr_size, 0, |
| 5159 | NULL, op2, readp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5160 | readp += op2; |
| 5161 | break; |
| 5162 | case DW_CFA_MIPS_advance_loc8: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5163 | if ((uint64_t) (endp - readp) < 8) |
| 5164 | goto invalid; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5165 | op1 = read_8ubyte_unaligned_inc (dbg, readp); |
| 5166 | printf (" MIPS_advance_loc8 %" PRIu64 " to %#" PRIx64 "\n", |
| 5167 | op1, pc += op1 * code_align); |
| 5168 | break; |
| 5169 | case DW_CFA_GNU_window_save: |
| 5170 | puts (" GNU_window_save"); |
| 5171 | break; |
| 5172 | case DW_CFA_GNU_args_size: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5173 | if ((uint64_t) (endp - readp) < 1) |
| 5174 | goto invalid; |
| 5175 | get_uleb128 (op1, readp, endp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5176 | printf (" args_size %" PRIu64 "\n", op1); |
| 5177 | break; |
| 5178 | default: |
| 5179 | printf (" ??? (%u)\n", opcode); |
| 5180 | break; |
| 5181 | } |
| 5182 | else if (opcode < DW_CFA_offset) |
| 5183 | printf (" advance_loc %u to %#" PRIx64 "\n", |
| 5184 | opcode & 0x3f, pc += (opcode & 0x3f) * code_align); |
| 5185 | else if (opcode < DW_CFA_restore) |
| 5186 | { |
| 5187 | uint64_t offset; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5188 | if ((uint64_t) (endp - readp) < 1) |
| 5189 | goto invalid; |
| 5190 | get_uleb128 (offset, readp, endp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5191 | printf (" offset r%u (%s) at cfa%+" PRId64 "\n", |
| 5192 | opcode & 0x3f, regname (opcode & 0x3f), offset * data_align); |
| 5193 | } |
| 5194 | else |
| 5195 | printf (" restore r%u (%s)\n", |
| 5196 | opcode & 0x3f, regname (opcode & 0x3f)); |
| 5197 | } |
| 5198 | } |
| 5199 | |
| 5200 | |
| 5201 | static unsigned int |
| 5202 | encoded_ptr_size (int encoding, unsigned int ptr_size) |
| 5203 | { |
| 5204 | switch (encoding & 7) |
| 5205 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5206 | case DW_EH_PE_udata4: |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5207 | return 4; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5208 | case DW_EH_PE_udata8: |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5209 | return 8; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5210 | case 0: |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5211 | return ptr_size; |
| 5212 | } |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5213 | |
| 5214 | fprintf (stderr, "Unsupported pointer encoding: %#x, " |
| 5215 | "assuming pointer size of %d.\n", encoding, ptr_size); |
| 5216 | return ptr_size; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5217 | } |
| 5218 | |
| 5219 | |
| 5220 | static unsigned int |
| 5221 | print_encoding (unsigned int val) |
| 5222 | { |
| 5223 | switch (val & 0xf) |
| 5224 | { |
| 5225 | case DW_EH_PE_absptr: |
| 5226 | fputs ("absptr", stdout); |
| 5227 | break; |
| 5228 | case DW_EH_PE_uleb128: |
| 5229 | fputs ("uleb128", stdout); |
| 5230 | break; |
| 5231 | case DW_EH_PE_udata2: |
| 5232 | fputs ("udata2", stdout); |
| 5233 | break; |
| 5234 | case DW_EH_PE_udata4: |
| 5235 | fputs ("udata4", stdout); |
| 5236 | break; |
| 5237 | case DW_EH_PE_udata8: |
| 5238 | fputs ("udata8", stdout); |
| 5239 | break; |
| 5240 | case DW_EH_PE_sleb128: |
| 5241 | fputs ("sleb128", stdout); |
| 5242 | break; |
| 5243 | case DW_EH_PE_sdata2: |
| 5244 | fputs ("sdata2", stdout); |
| 5245 | break; |
| 5246 | case DW_EH_PE_sdata4: |
| 5247 | fputs ("sdata4", stdout); |
| 5248 | break; |
| 5249 | case DW_EH_PE_sdata8: |
| 5250 | fputs ("sdata8", stdout); |
| 5251 | break; |
| 5252 | default: |
| 5253 | /* We did not use any of the bits after all. */ |
| 5254 | return val; |
| 5255 | } |
| 5256 | |
| 5257 | return val & ~0xf; |
| 5258 | } |
| 5259 | |
| 5260 | |
| 5261 | static unsigned int |
| 5262 | print_relinfo (unsigned int val) |
| 5263 | { |
| 5264 | switch (val & 0x70) |
| 5265 | { |
| 5266 | case DW_EH_PE_pcrel: |
| 5267 | fputs ("pcrel", stdout); |
| 5268 | break; |
| 5269 | case DW_EH_PE_textrel: |
| 5270 | fputs ("textrel", stdout); |
| 5271 | break; |
| 5272 | case DW_EH_PE_datarel: |
| 5273 | fputs ("datarel", stdout); |
| 5274 | break; |
| 5275 | case DW_EH_PE_funcrel: |
| 5276 | fputs ("funcrel", stdout); |
| 5277 | break; |
| 5278 | case DW_EH_PE_aligned: |
| 5279 | fputs ("aligned", stdout); |
| 5280 | break; |
| 5281 | default: |
| 5282 | return val; |
| 5283 | } |
| 5284 | |
| 5285 | return val & ~0x70; |
| 5286 | } |
| 5287 | |
| 5288 | |
| 5289 | static void |
| 5290 | print_encoding_base (const char *pfx, unsigned int fde_encoding) |
| 5291 | { |
| 5292 | printf ("(%s", pfx); |
| 5293 | |
| 5294 | if (fde_encoding == DW_EH_PE_omit) |
| 5295 | puts ("omit)"); |
| 5296 | else |
| 5297 | { |
| 5298 | unsigned int w = fde_encoding; |
| 5299 | |
| 5300 | w = print_encoding (w); |
| 5301 | |
| 5302 | if (w & 0x70) |
| 5303 | { |
| 5304 | if (w != fde_encoding) |
| 5305 | fputc_unlocked (' ', stdout); |
| 5306 | |
| 5307 | w = print_relinfo (w); |
| 5308 | } |
| 5309 | |
| 5310 | if (w != 0) |
| 5311 | printf ("%s%x", w != fde_encoding ? " " : "", w); |
| 5312 | |
| 5313 | puts (")"); |
| 5314 | } |
| 5315 | } |
| 5316 | |
| 5317 | |
| 5318 | static const unsigned char * |
| 5319 | read_encoded (unsigned int encoding, const unsigned char *readp, |
| 5320 | const unsigned char *const endp, uint64_t *res, Dwarf *dbg) |
| 5321 | { |
| 5322 | if ((encoding & 0xf) == DW_EH_PE_absptr) |
| 5323 | encoding = gelf_getclass (dbg->elf) == ELFCLASS32 |
| 5324 | ? DW_EH_PE_udata4 : DW_EH_PE_udata8; |
| 5325 | |
| 5326 | switch (encoding & 0xf) |
| 5327 | { |
| 5328 | case DW_EH_PE_uleb128: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5329 | get_uleb128 (*res, readp, endp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5330 | break; |
| 5331 | case DW_EH_PE_sleb128: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5332 | get_sleb128 (*res, readp, endp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5333 | break; |
| 5334 | case DW_EH_PE_udata2: |
| 5335 | if (readp + 2 > endp) |
| 5336 | goto invalid; |
| 5337 | *res = read_2ubyte_unaligned_inc (dbg, readp); |
| 5338 | break; |
| 5339 | case DW_EH_PE_udata4: |
| 5340 | if (readp + 4 > endp) |
| 5341 | goto invalid; |
| 5342 | *res = read_4ubyte_unaligned_inc (dbg, readp); |
| 5343 | break; |
| 5344 | case DW_EH_PE_udata8: |
| 5345 | if (readp + 8 > endp) |
| 5346 | goto invalid; |
| 5347 | *res = read_8ubyte_unaligned_inc (dbg, readp); |
| 5348 | break; |
| 5349 | case DW_EH_PE_sdata2: |
| 5350 | if (readp + 2 > endp) |
| 5351 | goto invalid; |
| 5352 | *res = read_2sbyte_unaligned_inc (dbg, readp); |
| 5353 | break; |
| 5354 | case DW_EH_PE_sdata4: |
| 5355 | if (readp + 4 > endp) |
| 5356 | goto invalid; |
| 5357 | *res = read_4sbyte_unaligned_inc (dbg, readp); |
| 5358 | break; |
| 5359 | case DW_EH_PE_sdata8: |
| 5360 | if (readp + 8 > endp) |
| 5361 | goto invalid; |
| 5362 | *res = read_8sbyte_unaligned_inc (dbg, readp); |
| 5363 | break; |
| 5364 | default: |
| 5365 | invalid: |
| 5366 | error (1, 0, |
| 5367 | gettext ("invalid encoding")); |
| 5368 | } |
| 5369 | |
| 5370 | return readp; |
| 5371 | } |
| 5372 | |
| 5373 | |
| 5374 | static void |
| 5375 | print_debug_frame_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr, |
| 5376 | Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg) |
| 5377 | { |
| 5378 | size_t shstrndx; |
| 5379 | /* We know this call will succeed since it did in the caller. */ |
| 5380 | (void) elf_getshdrstrndx (ebl->elf, &shstrndx); |
| 5381 | const char *scnname = elf_strptr (ebl->elf, shstrndx, shdr->sh_name); |
| 5382 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5383 | /* Needed if we find PC-relative addresses. */ |
| 5384 | GElf_Addr bias; |
| 5385 | if (dwfl_module_getelf (dwflmod, &bias) == NULL) |
| 5386 | { |
| 5387 | error (0, 0, gettext ("cannot get ELF: %s"), dwfl_errmsg (-1)); |
| 5388 | return; |
| 5389 | } |
| 5390 | |
| 5391 | bool is_eh_frame = strcmp (scnname, ".eh_frame") == 0; |
| 5392 | Elf_Data *data = (is_eh_frame |
| 5393 | ? elf_rawdata (scn, NULL) |
| 5394 | : dbg->sectiondata[IDX_debug_frame]); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5395 | |
| 5396 | if (unlikely (data == NULL)) |
| 5397 | { |
| 5398 | error (0, 0, gettext ("cannot get %s content: %s"), |
| 5399 | scnname, elf_errmsg (-1)); |
| 5400 | return; |
| 5401 | } |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5402 | |
| 5403 | if (is_eh_frame) |
| 5404 | printf (gettext ("\ |
| 5405 | \nCall frame information section [%2zu] '%s' at offset %#" PRIx64 ":\n"), |
| 5406 | elf_ndxscn (scn), scnname, (uint64_t) shdr->sh_offset); |
| 5407 | else |
| 5408 | printf (gettext ("\ |
| 5409 | \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"), |
| 5410 | elf_ndxscn (scn), scnname, (uint64_t) shdr->sh_offset); |
| 5411 | |
| 5412 | struct cieinfo |
| 5413 | { |
| 5414 | ptrdiff_t cie_offset; |
| 5415 | const char *augmentation; |
| 5416 | unsigned int code_alignment_factor; |
| 5417 | unsigned int data_alignment_factor; |
| 5418 | uint8_t address_size; |
| 5419 | uint8_t fde_encoding; |
| 5420 | uint8_t lsda_encoding; |
| 5421 | struct cieinfo *next; |
| 5422 | } *cies = NULL; |
| 5423 | |
| 5424 | const unsigned char *readp = data->d_buf; |
| 5425 | const unsigned char *const dataend = ((unsigned char *) data->d_buf |
| 5426 | + data->d_size); |
| 5427 | while (readp < dataend) |
| 5428 | { |
| 5429 | if (unlikely (readp + 4 > dataend)) |
| 5430 | { |
| 5431 | invalid_data: |
| 5432 | error (0, 0, gettext ("invalid data in section [%zu] '%s'"), |
| 5433 | elf_ndxscn (scn), scnname); |
| 5434 | return; |
| 5435 | } |
| 5436 | |
| 5437 | /* At the beginning there must be a CIE. There can be multiple, |
| 5438 | hence we test tis in a loop. */ |
| 5439 | ptrdiff_t offset = readp - (unsigned char *) data->d_buf; |
| 5440 | |
| 5441 | Dwarf_Word unit_length = read_4ubyte_unaligned_inc (dbg, readp); |
| 5442 | unsigned int length = 4; |
| 5443 | if (unlikely (unit_length == 0xffffffff)) |
| 5444 | { |
| 5445 | if (unlikely (readp + 8 > dataend)) |
| 5446 | goto invalid_data; |
| 5447 | |
| 5448 | unit_length = read_8ubyte_unaligned_inc (dbg, readp); |
| 5449 | length = 8; |
| 5450 | } |
| 5451 | |
| 5452 | if (unlikely (unit_length == 0)) |
| 5453 | { |
| 5454 | printf (gettext ("\n [%6tx] Zero terminator\n"), offset); |
| 5455 | continue; |
| 5456 | } |
| 5457 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5458 | Dwarf_Word maxsize = dataend - readp; |
| 5459 | if (unlikely (unit_length > maxsize)) |
| 5460 | goto invalid_data; |
| 5461 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5462 | unsigned int ptr_size = ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8; |
| 5463 | |
| 5464 | ptrdiff_t start = readp - (unsigned char *) data->d_buf; |
| 5465 | const unsigned char *const cieend = readp + unit_length; |
| 5466 | if (unlikely (cieend > dataend || readp + 8 > dataend)) |
| 5467 | goto invalid_data; |
| 5468 | |
| 5469 | Dwarf_Off cie_id; |
| 5470 | if (length == 4) |
| 5471 | { |
| 5472 | cie_id = read_4ubyte_unaligned_inc (dbg, readp); |
| 5473 | if (!is_eh_frame && cie_id == DW_CIE_ID_32) |
| 5474 | cie_id = DW_CIE_ID_64; |
| 5475 | } |
| 5476 | else |
| 5477 | cie_id = read_8ubyte_unaligned_inc (dbg, readp); |
| 5478 | |
| 5479 | uint_fast8_t version = 2; |
| 5480 | unsigned int code_alignment_factor; |
| 5481 | int data_alignment_factor; |
| 5482 | unsigned int fde_encoding = 0; |
| 5483 | unsigned int lsda_encoding = 0; |
| 5484 | Dwarf_Word initial_location = 0; |
| 5485 | Dwarf_Word vma_base = 0; |
| 5486 | |
| 5487 | if (cie_id == (is_eh_frame ? 0 : DW_CIE_ID_64)) |
| 5488 | { |
| 5489 | version = *readp++; |
| 5490 | const char *const augmentation = (const char *) readp; |
| 5491 | readp = memchr (readp, '\0', cieend - readp); |
| 5492 | if (unlikely (readp == NULL)) |
| 5493 | goto invalid_data; |
| 5494 | ++readp; |
| 5495 | |
| 5496 | uint_fast8_t segment_size = 0; |
| 5497 | if (version >= 4) |
| 5498 | { |
| 5499 | if (cieend - readp < 5) |
| 5500 | goto invalid_data; |
| 5501 | ptr_size = *readp++; |
| 5502 | segment_size = *readp++; |
| 5503 | } |
| 5504 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5505 | if (cieend - readp < 1) |
| 5506 | goto invalid_data; |
| 5507 | get_uleb128 (code_alignment_factor, readp, cieend); |
| 5508 | if (cieend - readp < 1) |
| 5509 | goto invalid_data; |
| 5510 | get_sleb128 (data_alignment_factor, readp, cieend); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5511 | |
| 5512 | /* In some variant for unwind data there is another field. */ |
| 5513 | if (strcmp (augmentation, "eh") == 0) |
| 5514 | readp += ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8; |
| 5515 | |
| 5516 | unsigned int return_address_register; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5517 | if (cieend - readp < 1) |
| 5518 | goto invalid_data; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5519 | if (unlikely (version == 1)) |
| 5520 | return_address_register = *readp++; |
| 5521 | else |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5522 | get_uleb128 (return_address_register, readp, cieend); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5523 | |
| 5524 | printf ("\n [%6tx] CIE length=%" PRIu64 "\n" |
| 5525 | " CIE_id: %" PRIu64 "\n" |
| 5526 | " version: %u\n" |
| 5527 | " augmentation: \"%s\"\n", |
| 5528 | offset, (uint64_t) unit_length, (uint64_t) cie_id, |
| 5529 | version, augmentation); |
| 5530 | if (version >= 4) |
| 5531 | printf (" address_size: %u\n" |
| 5532 | " segment_size: %u\n", |
| 5533 | ptr_size, segment_size); |
| 5534 | printf (" code_alignment_factor: %u\n" |
| 5535 | " data_alignment_factor: %d\n" |
| 5536 | " return_address_register: %u\n", |
| 5537 | code_alignment_factor, |
| 5538 | data_alignment_factor, return_address_register); |
| 5539 | |
| 5540 | if (augmentation[0] == 'z') |
| 5541 | { |
| 5542 | unsigned int augmentationlen; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5543 | get_uleb128 (augmentationlen, readp, cieend); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5544 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5545 | if (augmentationlen > (size_t) (cieend - readp)) |
| 5546 | { |
| 5547 | error (0, 0, gettext ("invalid augmentation length")); |
| 5548 | readp = cieend; |
| 5549 | continue; |
| 5550 | } |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5551 | |
| 5552 | const char *hdr = "Augmentation data:"; |
| 5553 | const char *cp = augmentation + 1; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5554 | while (*cp != '\0' && cp < augmentation + augmentationlen + 1) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5555 | { |
| 5556 | printf (" %-26s%#x ", hdr, *readp); |
| 5557 | hdr = ""; |
| 5558 | |
| 5559 | if (*cp == 'R') |
| 5560 | { |
| 5561 | fde_encoding = *readp++; |
| 5562 | print_encoding_base (gettext ("FDE address encoding: "), |
| 5563 | fde_encoding); |
| 5564 | } |
| 5565 | else if (*cp == 'L') |
| 5566 | { |
| 5567 | lsda_encoding = *readp++; |
| 5568 | print_encoding_base (gettext ("LSDA pointer encoding: "), |
| 5569 | lsda_encoding); |
| 5570 | } |
| 5571 | else if (*cp == 'P') |
| 5572 | { |
| 5573 | /* Personality. This field usually has a relocation |
| 5574 | attached pointing to __gcc_personality_v0. */ |
| 5575 | const unsigned char *startp = readp; |
| 5576 | unsigned int encoding = *readp++; |
| 5577 | uint64_t val = 0; |
| 5578 | readp = read_encoded (encoding, readp, |
| 5579 | readp - 1 + augmentationlen, |
| 5580 | &val, dbg); |
| 5581 | |
| 5582 | while (++startp < readp) |
| 5583 | printf ("%#x ", *startp); |
| 5584 | |
| 5585 | putchar ('('); |
| 5586 | print_encoding (encoding); |
| 5587 | putchar (' '); |
| 5588 | switch (encoding & 0xf) |
| 5589 | { |
| 5590 | case DW_EH_PE_sleb128: |
| 5591 | case DW_EH_PE_sdata2: |
| 5592 | case DW_EH_PE_sdata4: |
| 5593 | printf ("%" PRId64 ")\n", val); |
| 5594 | break; |
| 5595 | default: |
| 5596 | printf ("%#" PRIx64 ")\n", val); |
| 5597 | break; |
| 5598 | } |
| 5599 | } |
| 5600 | else |
| 5601 | printf ("(%x)\n", *readp++); |
| 5602 | |
| 5603 | ++cp; |
| 5604 | } |
| 5605 | } |
| 5606 | |
| 5607 | if (likely (ptr_size == 4 || ptr_size == 8)) |
| 5608 | { |
| 5609 | struct cieinfo *newp = alloca (sizeof (*newp)); |
| 5610 | newp->cie_offset = offset; |
| 5611 | newp->augmentation = augmentation; |
| 5612 | newp->fde_encoding = fde_encoding; |
| 5613 | newp->lsda_encoding = lsda_encoding; |
| 5614 | newp->address_size = ptr_size; |
| 5615 | newp->code_alignment_factor = code_alignment_factor; |
| 5616 | newp->data_alignment_factor = data_alignment_factor; |
| 5617 | newp->next = cies; |
| 5618 | cies = newp; |
| 5619 | } |
| 5620 | } |
| 5621 | else |
| 5622 | { |
| 5623 | struct cieinfo *cie = cies; |
| 5624 | while (cie != NULL) |
| 5625 | if (is_eh_frame |
| 5626 | ? start - (ptrdiff_t) cie_id == cie->cie_offset |
| 5627 | : (ptrdiff_t) cie_id == cie->cie_offset) |
| 5628 | break; |
| 5629 | else |
| 5630 | cie = cie->next; |
| 5631 | if (unlikely (cie == NULL)) |
| 5632 | { |
| 5633 | puts ("invalid CIE reference in FDE"); |
| 5634 | return; |
| 5635 | } |
| 5636 | |
| 5637 | /* Initialize from CIE data. */ |
| 5638 | fde_encoding = cie->fde_encoding; |
| 5639 | lsda_encoding = cie->lsda_encoding; |
| 5640 | ptr_size = encoded_ptr_size (fde_encoding, cie->address_size); |
| 5641 | code_alignment_factor = cie->code_alignment_factor; |
| 5642 | data_alignment_factor = cie->data_alignment_factor; |
| 5643 | |
| 5644 | const unsigned char *base = readp; |
| 5645 | // XXX There are sometimes relocations for this value |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5646 | initial_location = read_addr_unaligned_inc (ptr_size, dbg, readp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5647 | Dwarf_Word address_range |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5648 | = read_addr_unaligned_inc (ptr_size, dbg, readp); |
| 5649 | |
| 5650 | /* pcrel for an FDE address is relative to the runtime |
| 5651 | address of the start_address field itself. Sign extend |
| 5652 | if necessary to make sure the calculation is done on the |
| 5653 | full 64 bit address even when initial_location only holds |
| 5654 | the lower 32 bits. */ |
| 5655 | Dwarf_Addr pc_start = initial_location; |
| 5656 | if (ptr_size == 4) |
| 5657 | pc_start = (uint64_t) (int32_t) pc_start; |
| 5658 | if ((fde_encoding & 0x70) == DW_EH_PE_pcrel) |
| 5659 | pc_start += ((uint64_t) shdr->sh_addr |
| 5660 | + (base - (const unsigned char *) data->d_buf) |
| 5661 | - bias); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5662 | |
| 5663 | char *a = format_dwarf_addr (dwflmod, cie->address_size, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5664 | pc_start, initial_location); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5665 | printf ("\n [%6tx] FDE length=%" PRIu64 " cie=[%6tx]\n" |
| 5666 | " CIE_pointer: %" PRIu64 "\n" |
| 5667 | " initial_location: %s", |
| 5668 | offset, (uint64_t) unit_length, |
| 5669 | cie->cie_offset, (uint64_t) cie_id, a); |
| 5670 | free (a); |
| 5671 | if ((fde_encoding & 0x70) == DW_EH_PE_pcrel) |
| 5672 | { |
| 5673 | vma_base = (((uint64_t) shdr->sh_offset |
| 5674 | + (base - (const unsigned char *) data->d_buf) |
| 5675 | + (uint64_t) initial_location) |
| 5676 | & (ptr_size == 4 |
| 5677 | ? UINT64_C (0xffffffff) |
| 5678 | : UINT64_C (0xffffffffffffffff))); |
| 5679 | printf (gettext (" (offset: %#" PRIx64 ")"), |
| 5680 | (uint64_t) vma_base); |
| 5681 | } |
| 5682 | |
| 5683 | printf ("\n address_range: %#" PRIx64, |
| 5684 | (uint64_t) address_range); |
| 5685 | if ((fde_encoding & 0x70) == DW_EH_PE_pcrel) |
| 5686 | printf (gettext (" (end offset: %#" PRIx64 ")"), |
| 5687 | ((uint64_t) vma_base + (uint64_t) address_range) |
| 5688 | & (ptr_size == 4 |
| 5689 | ? UINT64_C (0xffffffff) |
| 5690 | : UINT64_C (0xffffffffffffffff))); |
| 5691 | putchar ('\n'); |
| 5692 | |
| 5693 | if (cie->augmentation[0] == 'z') |
| 5694 | { |
| 5695 | unsigned int augmentationlen; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5696 | if (cieend - readp < 1) |
| 5697 | goto invalid_data; |
| 5698 | get_uleb128 (augmentationlen, readp, cieend); |
| 5699 | |
| 5700 | if (augmentationlen > (size_t) (cieend - readp)) |
| 5701 | { |
| 5702 | error (0, 0, gettext ("invalid augmentation length")); |
| 5703 | readp = cieend; |
| 5704 | continue; |
| 5705 | } |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5706 | |
| 5707 | if (augmentationlen > 0) |
| 5708 | { |
| 5709 | const char *hdr = "Augmentation data:"; |
| 5710 | const char *cp = cie->augmentation + 1; |
| 5711 | unsigned int u = 0; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5712 | while (*cp != '\0' |
| 5713 | && cp < cie->augmentation + augmentationlen + 1) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5714 | { |
| 5715 | if (*cp == 'L') |
| 5716 | { |
| 5717 | uint64_t lsda_pointer; |
| 5718 | const unsigned char *p |
| 5719 | = read_encoded (lsda_encoding, &readp[u], |
| 5720 | &readp[augmentationlen], |
| 5721 | &lsda_pointer, dbg); |
| 5722 | u = p - readp; |
| 5723 | printf (gettext ("\ |
| 5724 | %-26sLSDA pointer: %#" PRIx64 "\n"), |
| 5725 | hdr, lsda_pointer); |
| 5726 | hdr = ""; |
| 5727 | } |
| 5728 | ++cp; |
| 5729 | } |
| 5730 | |
| 5731 | while (u < augmentationlen) |
| 5732 | { |
| 5733 | printf (" %-26s%#x\n", hdr, readp[u++]); |
| 5734 | hdr = ""; |
| 5735 | } |
| 5736 | } |
| 5737 | |
| 5738 | readp += augmentationlen; |
| 5739 | } |
| 5740 | } |
| 5741 | |
| 5742 | /* Handle the initialization instructions. */ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5743 | if (ptr_size != 4 && ptr_size !=8) |
| 5744 | printf ("invalid CIE pointer size (%u), must be 4 or 8.\n", ptr_size); |
| 5745 | else |
| 5746 | print_cfa_program (readp, cieend, vma_base, code_alignment_factor, |
| 5747 | data_alignment_factor, version, ptr_size, |
| 5748 | dwflmod, ebl, dbg); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5749 | readp = cieend; |
| 5750 | } |
| 5751 | } |
| 5752 | |
| 5753 | |
| 5754 | struct attrcb_args |
| 5755 | { |
| 5756 | Dwfl_Module *dwflmod; |
| 5757 | Dwarf *dbg; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5758 | Dwarf_Die *die; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5759 | int level; |
| 5760 | bool silent; |
| 5761 | unsigned int version; |
| 5762 | unsigned int addrsize; |
| 5763 | unsigned int offset_size; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5764 | struct Dwarf_CU *cu; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5765 | }; |
| 5766 | |
| 5767 | |
| 5768 | static int |
| 5769 | attr_callback (Dwarf_Attribute *attrp, void *arg) |
| 5770 | { |
| 5771 | struct attrcb_args *cbargs = (struct attrcb_args *) arg; |
| 5772 | const int level = cbargs->level; |
| 5773 | |
| 5774 | unsigned int attr = dwarf_whatattr (attrp); |
| 5775 | if (unlikely (attr == 0)) |
| 5776 | { |
| 5777 | if (!cbargs->silent) |
| 5778 | error (0, 0, gettext ("cannot get attribute code: %s"), |
| 5779 | dwarf_errmsg (-1)); |
| 5780 | return DWARF_CB_ABORT; |
| 5781 | } |
| 5782 | |
| 5783 | unsigned int form = dwarf_whatform (attrp); |
| 5784 | if (unlikely (form == 0)) |
| 5785 | { |
| 5786 | if (!cbargs->silent) |
| 5787 | error (0, 0, gettext ("cannot get attribute form: %s"), |
| 5788 | dwarf_errmsg (-1)); |
| 5789 | return DWARF_CB_ABORT; |
| 5790 | } |
| 5791 | |
| 5792 | switch (form) |
| 5793 | { |
| 5794 | case DW_FORM_addr: |
| 5795 | if (!cbargs->silent) |
| 5796 | { |
| 5797 | Dwarf_Addr addr; |
| 5798 | if (unlikely (dwarf_formaddr (attrp, &addr) != 0)) |
| 5799 | { |
| 5800 | attrval_out: |
| 5801 | if (!cbargs->silent) |
| 5802 | error (0, 0, gettext ("cannot get attribute value: %s"), |
| 5803 | dwarf_errmsg (-1)); |
| 5804 | return DWARF_CB_ABORT; |
| 5805 | } |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5806 | char *a = format_dwarf_addr (cbargs->dwflmod, cbargs->addrsize, |
| 5807 | addr, addr); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5808 | printf (" %*s%-20s (%s) %s\n", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5809 | (int) (level * 2), "", dwarf_attr_name (attr), |
| 5810 | dwarf_form_name (form), a); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5811 | free (a); |
| 5812 | } |
| 5813 | break; |
| 5814 | |
| 5815 | case DW_FORM_indirect: |
| 5816 | case DW_FORM_strp: |
| 5817 | case DW_FORM_string: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5818 | case DW_FORM_GNU_strp_alt: |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5819 | if (cbargs->silent) |
| 5820 | break; |
| 5821 | const char *str = dwarf_formstring (attrp); |
| 5822 | if (unlikely (str == NULL)) |
| 5823 | goto attrval_out; |
| 5824 | printf (" %*s%-20s (%s) \"%s\"\n", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5825 | (int) (level * 2), "", dwarf_attr_name (attr), |
| 5826 | dwarf_form_name (form), str); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5827 | break; |
| 5828 | |
| 5829 | case DW_FORM_ref_addr: |
| 5830 | case DW_FORM_ref_udata: |
| 5831 | case DW_FORM_ref8: |
| 5832 | case DW_FORM_ref4: |
| 5833 | case DW_FORM_ref2: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5834 | case DW_FORM_ref1: |
| 5835 | case DW_FORM_GNU_ref_alt: |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5836 | if (cbargs->silent) |
| 5837 | break; |
| 5838 | Dwarf_Die ref; |
| 5839 | if (unlikely (dwarf_formref_die (attrp, &ref) == NULL)) |
| 5840 | goto attrval_out; |
| 5841 | |
| 5842 | printf (" %*s%-20s (%s) [%6" PRIxMAX "]\n", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5843 | (int) (level * 2), "", dwarf_attr_name (attr), |
| 5844 | dwarf_form_name (form), (uintmax_t) dwarf_dieoffset (&ref)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5845 | break; |
| 5846 | |
| 5847 | case DW_FORM_ref_sig8: |
| 5848 | if (cbargs->silent) |
| 5849 | break; |
| 5850 | printf (" %*s%-20s (%s) {%6" PRIx64 "}\n", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5851 | (int) (level * 2), "", dwarf_attr_name (attr), |
| 5852 | dwarf_form_name (form), |
| 5853 | (uint64_t) read_8ubyte_unaligned (attrp->cu->dbg, attrp->valp)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5854 | break; |
| 5855 | |
| 5856 | case DW_FORM_sec_offset: |
| 5857 | case DW_FORM_udata: |
| 5858 | case DW_FORM_sdata: |
| 5859 | case DW_FORM_data8: |
| 5860 | case DW_FORM_data4: |
| 5861 | case DW_FORM_data2: |
| 5862 | case DW_FORM_data1:; |
| 5863 | Dwarf_Word num; |
| 5864 | if (unlikely (dwarf_formudata (attrp, &num) != 0)) |
| 5865 | goto attrval_out; |
| 5866 | |
| 5867 | const char *valuestr = NULL; |
| 5868 | switch (attr) |
| 5869 | { |
| 5870 | /* This case can take either a constant or a loclistptr. */ |
| 5871 | case DW_AT_data_member_location: |
| 5872 | if (form != DW_FORM_sec_offset |
| 5873 | && (cbargs->version >= 4 |
| 5874 | || (form != DW_FORM_data4 && form != DW_FORM_data8))) |
| 5875 | { |
| 5876 | if (!cbargs->silent) |
| 5877 | printf (" %*s%-20s (%s) %" PRIxMAX "\n", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5878 | (int) (level * 2), "", dwarf_attr_name (attr), |
| 5879 | dwarf_form_name (form), (uintmax_t) num); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5880 | return DWARF_CB_OK; |
| 5881 | } |
| 5882 | /* else fallthrough */ |
| 5883 | |
| 5884 | /* These cases always take a loclistptr and no constant. */ |
| 5885 | case DW_AT_location: |
| 5886 | case DW_AT_data_location: |
| 5887 | case DW_AT_vtable_elem_location: |
| 5888 | case DW_AT_string_length: |
| 5889 | case DW_AT_use_location: |
| 5890 | case DW_AT_frame_base: |
| 5891 | case DW_AT_return_addr: |
| 5892 | case DW_AT_static_link: |
| 5893 | case DW_AT_GNU_call_site_value: |
| 5894 | case DW_AT_GNU_call_site_data_value: |
| 5895 | case DW_AT_GNU_call_site_target: |
| 5896 | case DW_AT_GNU_call_site_target_clobbered: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5897 | { |
| 5898 | bool nlpt = notice_listptr (section_loc, &known_loclistptr, |
| 5899 | cbargs->addrsize, cbargs->offset_size, |
| 5900 | cbargs->cu, num); |
| 5901 | if (!cbargs->silent) |
| 5902 | printf (" %*s%-20s (%s) location list [%6" PRIxMAX "]%s\n", |
| 5903 | (int) (level * 2), "", dwarf_attr_name (attr), |
| 5904 | dwarf_form_name (form), (uintmax_t) num, |
| 5905 | nlpt ? "" : " <WARNING offset too big>"); |
| 5906 | } |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5907 | return DWARF_CB_OK; |
| 5908 | |
| 5909 | case DW_AT_ranges: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5910 | { |
| 5911 | bool nlpt = notice_listptr (section_ranges, &known_rangelistptr, |
| 5912 | cbargs->addrsize, cbargs->offset_size, |
| 5913 | cbargs->cu, num); |
| 5914 | if (!cbargs->silent) |
| 5915 | printf (" %*s%-20s (%s) range list [%6" PRIxMAX "]%s\n", |
| 5916 | (int) (level * 2), "", dwarf_attr_name (attr), |
| 5917 | dwarf_form_name (form), (uintmax_t) num, |
| 5918 | nlpt ? "" : " <WARNING offset too big>"); |
| 5919 | } |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5920 | return DWARF_CB_OK; |
| 5921 | |
| 5922 | case DW_AT_language: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5923 | valuestr = dwarf_lang_name (num); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5924 | break; |
| 5925 | case DW_AT_encoding: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5926 | valuestr = dwarf_encoding_name (num); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5927 | break; |
| 5928 | case DW_AT_accessibility: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5929 | valuestr = dwarf_access_name (num); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5930 | break; |
| 5931 | case DW_AT_visibility: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5932 | valuestr = dwarf_visibility_name (num); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5933 | break; |
| 5934 | case DW_AT_virtuality: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5935 | valuestr = dwarf_virtuality_name (num); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5936 | break; |
| 5937 | case DW_AT_identifier_case: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5938 | valuestr = dwarf_identifier_case_name (num); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5939 | break; |
| 5940 | case DW_AT_calling_convention: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5941 | valuestr = dwarf_calling_convention_name (num); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5942 | break; |
| 5943 | case DW_AT_inline: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5944 | valuestr = dwarf_inline_name (num); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5945 | break; |
| 5946 | case DW_AT_ordering: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5947 | valuestr = dwarf_ordering_name (num); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5948 | break; |
| 5949 | case DW_AT_discr_list: |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5950 | valuestr = dwarf_discr_list_name (num); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5951 | break; |
| 5952 | default: |
| 5953 | /* Nothing. */ |
| 5954 | break; |
| 5955 | } |
| 5956 | |
| 5957 | if (cbargs->silent) |
| 5958 | break; |
| 5959 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5960 | /* When highpc is in constant form it is relative to lowpc. |
| 5961 | In that case also show the address. */ |
| 5962 | Dwarf_Addr highpc; |
| 5963 | if (attr == DW_AT_high_pc && dwarf_highpc (cbargs->die, &highpc) == 0) |
| 5964 | { |
| 5965 | char *a = format_dwarf_addr (cbargs->dwflmod, cbargs->addrsize, |
| 5966 | highpc, highpc); |
| 5967 | printf (" %*s%-20s (%s) %" PRIuMAX " (%s)\n", |
| 5968 | (int) (level * 2), "", dwarf_attr_name (attr), |
| 5969 | dwarf_form_name (form), (uintmax_t) num, a); |
| 5970 | free (a); |
| 5971 | } |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 5972 | else |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 5973 | { |
| 5974 | Dwarf_Sword snum = 0; |
| 5975 | if (form == DW_FORM_sdata) |
| 5976 | if (unlikely (dwarf_formsdata (attrp, &snum) != 0)) |
| 5977 | goto attrval_out; |
| 5978 | |
| 5979 | if (valuestr == NULL) |
| 5980 | { |
| 5981 | printf (" %*s%-20s (%s)", |
| 5982 | (int) (level * 2), "", dwarf_attr_name (attr), |
| 5983 | dwarf_form_name (form)); |
| 5984 | if (form == DW_FORM_sdata) |
| 5985 | printf (" %" PRIdMAX "\n", (intmax_t) snum); |
| 5986 | else |
| 5987 | printf (" %" PRIuMAX "\n", (uintmax_t) num); |
| 5988 | } |
| 5989 | else |
| 5990 | { |
| 5991 | printf (" %*s%-20s (%s) %s", |
| 5992 | (int) (level * 2), "", dwarf_attr_name (attr), |
| 5993 | dwarf_form_name (form), valuestr); |
| 5994 | if (form == DW_FORM_sdata) |
| 5995 | printf (" (%" PRIdMAX ")\n", (intmax_t) snum); |
| 5996 | else |
| 5997 | printf (" (%" PRIuMAX ")\n", (uintmax_t) num); |
| 5998 | } |
| 5999 | } |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6000 | break; |
| 6001 | |
| 6002 | case DW_FORM_flag: |
| 6003 | if (cbargs->silent) |
| 6004 | break; |
| 6005 | bool flag; |
| 6006 | if (unlikely (dwarf_formflag (attrp, &flag) != 0)) |
| 6007 | goto attrval_out; |
| 6008 | |
| 6009 | printf (" %*s%-20s (%s) %s\n", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6010 | (int) (level * 2), "", dwarf_attr_name (attr), |
| 6011 | dwarf_form_name (form), nl_langinfo (flag ? YESSTR : NOSTR)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6012 | break; |
| 6013 | |
| 6014 | case DW_FORM_flag_present: |
| 6015 | if (cbargs->silent) |
| 6016 | break; |
| 6017 | printf (" %*s%-20s (%s) %s\n", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6018 | (int) (level * 2), "", dwarf_attr_name (attr), |
| 6019 | dwarf_form_name (form), nl_langinfo (YESSTR)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6020 | break; |
| 6021 | |
| 6022 | case DW_FORM_exprloc: |
| 6023 | case DW_FORM_block4: |
| 6024 | case DW_FORM_block2: |
| 6025 | case DW_FORM_block1: |
| 6026 | case DW_FORM_block: |
| 6027 | if (cbargs->silent) |
| 6028 | break; |
| 6029 | Dwarf_Block block; |
| 6030 | if (unlikely (dwarf_formblock (attrp, &block) != 0)) |
| 6031 | goto attrval_out; |
| 6032 | |
| 6033 | printf (" %*s%-20s (%s) ", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6034 | (int) (level * 2), "", dwarf_attr_name (attr), |
| 6035 | dwarf_form_name (form)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6036 | |
| 6037 | switch (attr) |
| 6038 | { |
| 6039 | default: |
| 6040 | if (form != DW_FORM_exprloc) |
| 6041 | { |
| 6042 | print_block (block.length, block.data); |
| 6043 | break; |
| 6044 | } |
| 6045 | /* Fall through. */ |
| 6046 | |
| 6047 | case DW_AT_location: |
| 6048 | case DW_AT_data_location: |
| 6049 | case DW_AT_data_member_location: |
| 6050 | case DW_AT_vtable_elem_location: |
| 6051 | case DW_AT_string_length: |
| 6052 | case DW_AT_use_location: |
| 6053 | case DW_AT_frame_base: |
| 6054 | case DW_AT_return_addr: |
| 6055 | case DW_AT_static_link: |
| 6056 | case DW_AT_allocated: |
| 6057 | case DW_AT_associated: |
| 6058 | case DW_AT_bit_size: |
| 6059 | case DW_AT_bit_offset: |
| 6060 | case DW_AT_bit_stride: |
| 6061 | case DW_AT_byte_size: |
| 6062 | case DW_AT_byte_stride: |
| 6063 | case DW_AT_count: |
| 6064 | case DW_AT_lower_bound: |
| 6065 | case DW_AT_upper_bound: |
| 6066 | case DW_AT_GNU_call_site_value: |
| 6067 | case DW_AT_GNU_call_site_data_value: |
| 6068 | case DW_AT_GNU_call_site_target: |
| 6069 | case DW_AT_GNU_call_site_target_clobbered: |
| 6070 | putchar ('\n'); |
| 6071 | print_ops (cbargs->dwflmod, cbargs->dbg, |
| 6072 | 12 + level * 2, 12 + level * 2, |
| 6073 | cbargs->version, cbargs->addrsize, cbargs->offset_size, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6074 | attrp->cu, block.length, block.data); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6075 | break; |
| 6076 | } |
| 6077 | break; |
| 6078 | |
| 6079 | default: |
| 6080 | if (cbargs->silent) |
| 6081 | break; |
| 6082 | printf (" %*s%-20s (form: %#x) ???\n", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6083 | (int) (level * 2), "", dwarf_attr_name (attr), |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6084 | (int) form); |
| 6085 | break; |
| 6086 | } |
| 6087 | |
| 6088 | return DWARF_CB_OK; |
| 6089 | } |
| 6090 | |
| 6091 | static void |
| 6092 | print_debug_units (Dwfl_Module *dwflmod, |
| 6093 | Ebl *ebl, GElf_Ehdr *ehdr, |
| 6094 | Elf_Scn *scn, GElf_Shdr *shdr, |
| 6095 | Dwarf *dbg, bool debug_types) |
| 6096 | { |
| 6097 | const bool silent = !(print_debug_sections & section_info); |
| 6098 | const char *secname = section_name (ebl, ehdr, shdr); |
| 6099 | |
| 6100 | if (!silent) |
| 6101 | printf (gettext ("\ |
| 6102 | \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n [Offset]\n"), |
| 6103 | elf_ndxscn (scn), secname, (uint64_t) shdr->sh_offset); |
| 6104 | |
| 6105 | /* If the section is empty we don't have to do anything. */ |
| 6106 | if (!silent && shdr->sh_size == 0) |
| 6107 | return; |
| 6108 | |
| 6109 | int maxdies = 20; |
| 6110 | Dwarf_Die *dies = (Dwarf_Die *) xmalloc (maxdies * sizeof (Dwarf_Die)); |
| 6111 | |
| 6112 | Dwarf_Off offset = 0; |
| 6113 | |
| 6114 | /* New compilation unit. */ |
| 6115 | size_t cuhl; |
| 6116 | Dwarf_Half version; |
| 6117 | Dwarf_Off abbroffset; |
| 6118 | uint8_t addrsize; |
| 6119 | uint8_t offsize; |
| 6120 | Dwarf_Off nextcu; |
| 6121 | uint64_t typesig; |
| 6122 | Dwarf_Off typeoff; |
| 6123 | next_cu: |
| 6124 | if (dwarf_next_unit (dbg, offset, &nextcu, &cuhl, &version, |
| 6125 | &abbroffset, &addrsize, &offsize, |
| 6126 | debug_types ? &typesig : NULL, |
| 6127 | debug_types ? &typeoff : NULL) != 0) |
| 6128 | goto do_return; |
| 6129 | |
| 6130 | if (!silent) |
| 6131 | { |
| 6132 | if (debug_types) |
| 6133 | printf (gettext (" Type unit at offset %" PRIu64 ":\n" |
| 6134 | " Version: %" PRIu16 ", Abbreviation section offset: %" |
| 6135 | PRIu64 ", Address size: %" PRIu8 |
| 6136 | ", Offset size: %" PRIu8 |
| 6137 | "\n Type signature: %#" PRIx64 |
| 6138 | ", Type offset: %#" PRIx64 "\n"), |
| 6139 | (uint64_t) offset, version, abbroffset, addrsize, offsize, |
| 6140 | typesig, (uint64_t) typeoff); |
| 6141 | else |
| 6142 | printf (gettext (" Compilation unit at offset %" PRIu64 ":\n" |
| 6143 | " Version: %" PRIu16 ", Abbreviation section offset: %" |
| 6144 | PRIu64 ", Address size: %" PRIu8 |
| 6145 | ", Offset size: %" PRIu8 "\n"), |
| 6146 | (uint64_t) offset, version, abbroffset, addrsize, offsize); |
| 6147 | } |
| 6148 | |
| 6149 | struct attrcb_args args = |
| 6150 | { |
| 6151 | .dwflmod = dwflmod, |
| 6152 | .dbg = dbg, |
| 6153 | .silent = silent, |
| 6154 | .version = version, |
| 6155 | .addrsize = addrsize, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6156 | .offset_size = offsize |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6157 | }; |
| 6158 | |
| 6159 | offset += cuhl; |
| 6160 | |
| 6161 | int level = 0; |
| 6162 | |
| 6163 | if (unlikely ((debug_types ? dwarf_offdie_types : dwarf_offdie) |
| 6164 | (dbg, offset, &dies[level]) == NULL)) |
| 6165 | { |
| 6166 | if (!silent) |
| 6167 | error (0, 0, gettext ("cannot get DIE at offset %" PRIu64 |
| 6168 | " in section '%s': %s"), |
| 6169 | (uint64_t) offset, secname, dwarf_errmsg (-1)); |
| 6170 | goto do_return; |
| 6171 | } |
| 6172 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6173 | args.cu = dies[0].cu; |
| 6174 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6175 | do |
| 6176 | { |
| 6177 | offset = dwarf_dieoffset (&dies[level]); |
| 6178 | if (unlikely (offset == ~0ul)) |
| 6179 | { |
| 6180 | if (!silent) |
| 6181 | error (0, 0, gettext ("cannot get DIE offset: %s"), |
| 6182 | dwarf_errmsg (-1)); |
| 6183 | goto do_return; |
| 6184 | } |
| 6185 | |
| 6186 | int tag = dwarf_tag (&dies[level]); |
| 6187 | if (unlikely (tag == DW_TAG_invalid)) |
| 6188 | { |
| 6189 | if (!silent) |
| 6190 | error (0, 0, gettext ("cannot get tag of DIE at offset %" PRIu64 |
| 6191 | " in section '%s': %s"), |
| 6192 | (uint64_t) offset, secname, dwarf_errmsg (-1)); |
| 6193 | goto do_return; |
| 6194 | } |
| 6195 | |
| 6196 | if (!silent) |
| 6197 | printf (" [%6" PRIx64 "] %*s%s\n", |
| 6198 | (uint64_t) offset, (int) (level * 2), "", |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6199 | dwarf_tag_name (tag)); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6200 | |
| 6201 | /* Print the attribute values. */ |
| 6202 | args.level = level; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6203 | args.die = &dies[level]; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6204 | (void) dwarf_getattrs (&dies[level], attr_callback, &args, 0); |
| 6205 | |
| 6206 | /* Make room for the next level's DIE. */ |
| 6207 | if (level + 1 == maxdies) |
| 6208 | dies = (Dwarf_Die *) xrealloc (dies, |
| 6209 | (maxdies += 10) |
| 6210 | * sizeof (Dwarf_Die)); |
| 6211 | |
| 6212 | int res = dwarf_child (&dies[level], &dies[level + 1]); |
| 6213 | if (res > 0) |
| 6214 | { |
| 6215 | while ((res = dwarf_siblingof (&dies[level], &dies[level])) == 1) |
| 6216 | if (level-- == 0) |
| 6217 | break; |
| 6218 | |
| 6219 | if (unlikely (res == -1)) |
| 6220 | { |
| 6221 | if (!silent) |
| 6222 | error (0, 0, gettext ("cannot get next DIE: %s\n"), |
| 6223 | dwarf_errmsg (-1)); |
| 6224 | goto do_return; |
| 6225 | } |
| 6226 | } |
| 6227 | else if (unlikely (res < 0)) |
| 6228 | { |
| 6229 | if (!silent) |
| 6230 | error (0, 0, gettext ("cannot get next DIE: %s"), |
| 6231 | dwarf_errmsg (-1)); |
| 6232 | goto do_return; |
| 6233 | } |
| 6234 | else |
| 6235 | ++level; |
| 6236 | } |
| 6237 | while (level >= 0); |
| 6238 | |
| 6239 | offset = nextcu; |
| 6240 | if (offset != 0) |
| 6241 | goto next_cu; |
| 6242 | |
| 6243 | do_return: |
| 6244 | free (dies); |
| 6245 | } |
| 6246 | |
| 6247 | static void |
| 6248 | print_debug_info_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr, |
| 6249 | Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg) |
| 6250 | { |
| 6251 | print_debug_units (dwflmod, ebl, ehdr, scn, shdr, dbg, false); |
| 6252 | } |
| 6253 | |
| 6254 | static void |
| 6255 | print_debug_types_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr, |
| 6256 | Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg) |
| 6257 | { |
| 6258 | print_debug_units (dwflmod, ebl, ehdr, scn, shdr, dbg, true); |
| 6259 | } |
| 6260 | |
| 6261 | |
| 6262 | static void |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6263 | print_decoded_line_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr, |
| 6264 | Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg) |
| 6265 | { |
| 6266 | printf (gettext ("\ |
| 6267 | \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n\n"), |
| 6268 | elf_ndxscn (scn), section_name (ebl, ehdr, shdr), |
| 6269 | (uint64_t) shdr->sh_offset); |
| 6270 | |
| 6271 | size_t address_size |
| 6272 | = elf_getident (ebl->elf, NULL)[EI_CLASS] == ELFCLASS32 ? 4 : 8; |
| 6273 | |
| 6274 | Dwarf_Off cuoffset; |
| 6275 | Dwarf_Off ncuoffset = 0; |
| 6276 | size_t hsize; |
| 6277 | while (dwarf_nextcu (dbg, cuoffset = ncuoffset, &ncuoffset, &hsize, |
| 6278 | NULL, NULL, NULL) == 0) |
| 6279 | { |
| 6280 | Dwarf_Die cudie; |
| 6281 | if (dwarf_offdie (dbg, cuoffset + hsize, &cudie) == NULL) |
| 6282 | continue; |
| 6283 | |
| 6284 | size_t nlines; |
| 6285 | Dwarf_Lines *lines; |
| 6286 | if (dwarf_getsrclines (&cudie, &lines, &nlines) != 0) |
| 6287 | continue; |
| 6288 | |
| 6289 | printf (" CU [%" PRIx64 "] %s\n", |
| 6290 | dwarf_dieoffset (&cudie), dwarf_diename (&cudie)); |
| 6291 | printf (" line:col SBPE* disc isa op address" |
| 6292 | " (Statement Block Prologue Epilogue *End)\n"); |
| 6293 | const char *last_file = ""; |
| 6294 | for (size_t n = 0; n < nlines; n++) |
| 6295 | { |
| 6296 | Dwarf_Line *line = dwarf_onesrcline (lines, n); |
| 6297 | if (line == NULL) |
| 6298 | { |
| 6299 | printf (" dwarf_onesrcline: %s\n", dwarf_errmsg (-1)); |
| 6300 | continue; |
| 6301 | } |
| 6302 | Dwarf_Word mtime, length; |
| 6303 | const char *file = dwarf_linesrc (line, &mtime, &length); |
| 6304 | if (file == NULL) |
| 6305 | { |
| 6306 | printf (" <%s> (mtime: ?, length: ?)\n", dwarf_errmsg (-1)); |
| 6307 | last_file = ""; |
| 6308 | } |
| 6309 | else if (strcmp (last_file, file) != 0) |
| 6310 | { |
| 6311 | printf (" %s (mtime: %" PRIu64 ", length: %" PRIu64 ")\n", |
| 6312 | file, mtime, length); |
| 6313 | last_file = file; |
| 6314 | } |
| 6315 | |
| 6316 | int lineno, colno; |
| 6317 | bool statement, endseq, block, prologue_end, epilogue_begin; |
| 6318 | unsigned int lineop, isa, disc; |
| 6319 | Dwarf_Addr address; |
| 6320 | dwarf_lineaddr (line, &address); |
| 6321 | dwarf_lineno (line, &lineno); |
| 6322 | dwarf_linecol (line, &colno); |
| 6323 | dwarf_lineop_index (line, &lineop); |
| 6324 | dwarf_linebeginstatement (line, &statement); |
| 6325 | dwarf_lineendsequence (line, &endseq); |
| 6326 | dwarf_lineblock (line, &block); |
| 6327 | dwarf_lineprologueend (line, &prologue_end); |
| 6328 | dwarf_lineepiloguebegin (line, &epilogue_begin); |
| 6329 | dwarf_lineisa (line, &isa); |
| 6330 | dwarf_linediscriminator (line, &disc); |
| 6331 | |
| 6332 | /* End sequence is special, it is one byte past. */ |
| 6333 | char *a = format_dwarf_addr (dwflmod, address_size, |
| 6334 | address - (endseq ? 1 : 0), address); |
| 6335 | printf (" %4d:%-3d %c%c%c%c%c %4d %3d %2d %s\n", |
| 6336 | lineno, colno, |
| 6337 | (statement ? 'S' : ' '), |
| 6338 | (block ? 'B' : ' '), |
| 6339 | (prologue_end ? 'P' : ' '), |
| 6340 | (epilogue_begin ? 'E' : ' '), |
| 6341 | (endseq ? '*' : ' '), |
| 6342 | disc, isa, lineop, a); |
| 6343 | free (a); |
| 6344 | |
| 6345 | if (endseq) |
| 6346 | printf("\n"); |
| 6347 | } |
| 6348 | } |
| 6349 | } |
| 6350 | |
| 6351 | |
| 6352 | static void |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6353 | print_debug_line_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr, |
| 6354 | Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg) |
| 6355 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6356 | if (decodedline) |
| 6357 | { |
| 6358 | print_decoded_line_section (dwflmod, ebl, ehdr, scn, shdr, dbg); |
| 6359 | return; |
| 6360 | } |
| 6361 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6362 | printf (gettext ("\ |
| 6363 | \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"), |
| 6364 | elf_ndxscn (scn), section_name (ebl, ehdr, shdr), |
| 6365 | (uint64_t) shdr->sh_offset); |
| 6366 | |
| 6367 | if (shdr->sh_size == 0) |
| 6368 | return; |
| 6369 | |
| 6370 | /* There is no functionality in libdw to read the information in the |
| 6371 | way it is represented here. Hardcode the decoder. */ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6372 | Elf_Data *data = dbg->sectiondata[IDX_debug_line]; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6373 | if (unlikely (data == NULL || data->d_buf == NULL)) |
| 6374 | { |
| 6375 | error (0, 0, gettext ("cannot get line data section data: %s"), |
| 6376 | elf_errmsg (-1)); |
| 6377 | return; |
| 6378 | } |
| 6379 | |
| 6380 | const unsigned char *linep = (const unsigned char *) data->d_buf; |
| 6381 | const unsigned char *lineendp; |
| 6382 | |
| 6383 | while (linep |
| 6384 | < (lineendp = (const unsigned char *) data->d_buf + data->d_size)) |
| 6385 | { |
| 6386 | size_t start_offset = linep - (const unsigned char *) data->d_buf; |
| 6387 | |
| 6388 | printf (gettext ("\nTable at offset %Zu:\n"), start_offset); |
| 6389 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6390 | if (unlikely (linep + 4 > lineendp)) |
| 6391 | goto invalid_data; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6392 | Dwarf_Word unit_length = read_4ubyte_unaligned_inc (dbg, linep); |
| 6393 | unsigned int length = 4; |
| 6394 | if (unlikely (unit_length == 0xffffffff)) |
| 6395 | { |
| 6396 | if (unlikely (linep + 8 > lineendp)) |
| 6397 | { |
| 6398 | invalid_data: |
| 6399 | error (0, 0, gettext ("invalid data in section [%zu] '%s'"), |
| 6400 | elf_ndxscn (scn), section_name (ebl, ehdr, shdr)); |
| 6401 | return; |
| 6402 | } |
| 6403 | unit_length = read_8ubyte_unaligned_inc (dbg, linep); |
| 6404 | length = 8; |
| 6405 | } |
| 6406 | |
| 6407 | /* Check whether we have enough room in the section. */ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6408 | if (unlikely (unit_length > (size_t) (lineendp - linep) |
| 6409 | || unit_length < 2 + length + 5 * 1)) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6410 | goto invalid_data; |
| 6411 | lineendp = linep + unit_length; |
| 6412 | |
| 6413 | /* The next element of the header is the version identifier. */ |
| 6414 | uint_fast16_t version = read_2ubyte_unaligned_inc (dbg, linep); |
| 6415 | |
| 6416 | /* Next comes the header length. */ |
| 6417 | Dwarf_Word header_length; |
| 6418 | if (length == 4) |
| 6419 | header_length = read_4ubyte_unaligned_inc (dbg, linep); |
| 6420 | else |
| 6421 | header_length = read_8ubyte_unaligned_inc (dbg, linep); |
| 6422 | //const unsigned char *header_start = linep; |
| 6423 | |
| 6424 | /* Next the minimum instruction length. */ |
| 6425 | uint_fast8_t minimum_instr_len = *linep++; |
| 6426 | |
| 6427 | /* Next the maximum operations per instruction, in version 4 format. */ |
| 6428 | uint_fast8_t max_ops_per_instr = version < 4 ? 1 : *linep++; |
| 6429 | |
| 6430 | /* Then the flag determining the default value of the is_stmt |
| 6431 | register. */ |
| 6432 | uint_fast8_t default_is_stmt = *linep++; |
| 6433 | |
| 6434 | /* Now the line base. */ |
| 6435 | int_fast8_t line_base = *((const int_fast8_t *) linep); |
| 6436 | ++linep; |
| 6437 | |
| 6438 | /* And the line range. */ |
| 6439 | uint_fast8_t line_range = *linep++; |
| 6440 | |
| 6441 | /* The opcode base. */ |
| 6442 | uint_fast8_t opcode_base = *linep++; |
| 6443 | |
| 6444 | /* Print what we got so far. */ |
| 6445 | printf (gettext ("\n" |
| 6446 | " Length: %" PRIu64 "\n" |
| 6447 | " DWARF version: %" PRIuFAST16 "\n" |
| 6448 | " Prologue length: %" PRIu64 "\n" |
| 6449 | " Minimum instruction length: %" PRIuFAST8 "\n" |
| 6450 | " Maximum operations per instruction: %" PRIuFAST8 "\n" |
| 6451 | " Initial value if '%s': %" PRIuFAST8 "\n" |
| 6452 | " Line base: %" PRIdFAST8 "\n" |
| 6453 | " Line range: %" PRIuFAST8 "\n" |
| 6454 | " Opcode base: %" PRIuFAST8 "\n" |
| 6455 | "\n" |
| 6456 | "Opcodes:\n"), |
| 6457 | (uint64_t) unit_length, version, (uint64_t) header_length, |
| 6458 | minimum_instr_len, max_ops_per_instr, |
| 6459 | "is_stmt", default_is_stmt, line_base, |
| 6460 | line_range, opcode_base); |
| 6461 | |
| 6462 | if (unlikely (linep + opcode_base - 1 >= lineendp)) |
| 6463 | { |
| 6464 | invalid_unit: |
| 6465 | error (0, 0, |
| 6466 | gettext ("invalid data at offset %tu in section [%zu] '%s'"), |
| 6467 | linep - (const unsigned char *) data->d_buf, |
| 6468 | elf_ndxscn (scn), section_name (ebl, ehdr, shdr)); |
| 6469 | linep = lineendp; |
| 6470 | continue; |
| 6471 | } |
| 6472 | int opcode_base_l10 = 1; |
| 6473 | unsigned int tmp = opcode_base; |
| 6474 | while (tmp > 10) |
| 6475 | { |
| 6476 | tmp /= 10; |
| 6477 | ++opcode_base_l10; |
| 6478 | } |
| 6479 | const uint8_t *standard_opcode_lengths = linep - 1; |
| 6480 | for (uint_fast8_t cnt = 1; cnt < opcode_base; ++cnt) |
| 6481 | printf (ngettext (" [%*" PRIuFAST8 "] %hhu argument\n", |
| 6482 | " [%*" PRIuFAST8 "] %hhu arguments\n", |
| 6483 | (int) linep[cnt - 1]), |
| 6484 | opcode_base_l10, cnt, linep[cnt - 1]); |
| 6485 | linep += opcode_base - 1; |
| 6486 | if (unlikely (linep >= lineendp)) |
| 6487 | goto invalid_unit; |
| 6488 | |
| 6489 | puts (gettext ("\nDirectory table:")); |
| 6490 | while (*linep != 0) |
| 6491 | { |
| 6492 | unsigned char *endp = memchr (linep, '\0', lineendp - linep); |
| 6493 | if (unlikely (endp == NULL)) |
| 6494 | goto invalid_unit; |
| 6495 | |
| 6496 | printf (" %s\n", (char *) linep); |
| 6497 | |
| 6498 | linep = endp + 1; |
| 6499 | } |
| 6500 | /* Skip the final NUL byte. */ |
| 6501 | ++linep; |
| 6502 | |
| 6503 | if (unlikely (linep >= lineendp)) |
| 6504 | goto invalid_unit; |
| 6505 | puts (gettext ("\nFile name table:\n" |
| 6506 | " Entry Dir Time Size Name")); |
| 6507 | for (unsigned int cnt = 1; *linep != 0; ++cnt) |
| 6508 | { |
| 6509 | /* First comes the file name. */ |
| 6510 | char *fname = (char *) linep; |
| 6511 | unsigned char *endp = memchr (fname, '\0', lineendp - linep); |
| 6512 | if (unlikely (endp == NULL)) |
| 6513 | goto invalid_unit; |
| 6514 | linep = endp + 1; |
| 6515 | |
| 6516 | /* Then the index. */ |
| 6517 | unsigned int diridx; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6518 | if (lineendp - linep < 1) |
| 6519 | goto invalid_unit; |
| 6520 | get_uleb128 (diridx, linep, lineendp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6521 | |
| 6522 | /* Next comes the modification time. */ |
| 6523 | unsigned int mtime; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6524 | if (lineendp - linep < 1) |
| 6525 | goto invalid_unit; |
| 6526 | get_uleb128 (mtime, linep, lineendp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6527 | |
| 6528 | /* Finally the length of the file. */ |
| 6529 | unsigned int fsize; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6530 | if (lineendp - linep < 1) |
| 6531 | goto invalid_unit; |
| 6532 | get_uleb128 (fsize, linep, lineendp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6533 | |
| 6534 | printf (" %-5u %-5u %-9u %-9u %s\n", |
| 6535 | cnt, diridx, mtime, fsize, fname); |
| 6536 | } |
| 6537 | /* Skip the final NUL byte. */ |
| 6538 | ++linep; |
| 6539 | |
| 6540 | puts (gettext ("\nLine number statements:")); |
| 6541 | Dwarf_Word address = 0; |
| 6542 | unsigned int op_index = 0; |
| 6543 | size_t line = 1; |
| 6544 | uint_fast8_t is_stmt = default_is_stmt; |
| 6545 | |
| 6546 | /* Default address value, in case we do not find the CU. */ |
| 6547 | size_t address_size |
| 6548 | = elf_getident (ebl->elf, NULL)[EI_CLASS] == ELFCLASS32 ? 4 : 8; |
| 6549 | |
| 6550 | /* Determine the CU this block is for. */ |
| 6551 | Dwarf_Off cuoffset; |
| 6552 | Dwarf_Off ncuoffset = 0; |
| 6553 | size_t hsize; |
| 6554 | while (dwarf_nextcu (dbg, cuoffset = ncuoffset, &ncuoffset, &hsize, |
| 6555 | NULL, NULL, NULL) == 0) |
| 6556 | { |
| 6557 | Dwarf_Die cudie; |
| 6558 | if (dwarf_offdie (dbg, cuoffset + hsize, &cudie) == NULL) |
| 6559 | continue; |
| 6560 | Dwarf_Attribute stmt_list; |
| 6561 | if (dwarf_attr (&cudie, DW_AT_stmt_list, &stmt_list) == NULL) |
| 6562 | continue; |
| 6563 | Dwarf_Word lineoff; |
| 6564 | if (dwarf_formudata (&stmt_list, &lineoff) != 0) |
| 6565 | continue; |
| 6566 | if (lineoff == start_offset) |
| 6567 | { |
| 6568 | /* Found the CU. */ |
| 6569 | address_size = cudie.cu->address_size; |
| 6570 | break; |
| 6571 | } |
| 6572 | } |
| 6573 | |
| 6574 | /* Apply the "operation advance" from a special opcode |
| 6575 | or DW_LNS_advance_pc (as per DWARF4 6.2.5.1). */ |
| 6576 | unsigned int op_addr_advance; |
| 6577 | bool show_op_index; |
| 6578 | inline void advance_pc (unsigned int op_advance) |
| 6579 | { |
| 6580 | op_addr_advance = minimum_instr_len * ((op_index + op_advance) |
| 6581 | / max_ops_per_instr); |
| 6582 | address += op_advance; |
| 6583 | show_op_index = (op_index > 0 || |
| 6584 | (op_index + op_advance) % max_ops_per_instr > 0); |
| 6585 | op_index = (op_index + op_advance) % max_ops_per_instr; |
| 6586 | } |
| 6587 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6588 | if (max_ops_per_instr == 0) |
| 6589 | { |
| 6590 | error (0, 0, |
| 6591 | gettext ("invalid maximum operations per instruction is zero")); |
| 6592 | linep = lineendp; |
| 6593 | continue; |
| 6594 | } |
| 6595 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6596 | while (linep < lineendp) |
| 6597 | { |
| 6598 | size_t offset = linep - (const unsigned char *) data->d_buf; |
| 6599 | unsigned int u128; |
| 6600 | int s128; |
| 6601 | |
| 6602 | /* Read the opcode. */ |
| 6603 | unsigned int opcode = *linep++; |
| 6604 | |
| 6605 | printf (" [%6" PRIx64 "]", (uint64_t)offset); |
| 6606 | /* Is this a special opcode? */ |
| 6607 | if (likely (opcode >= opcode_base)) |
| 6608 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6609 | if (unlikely (line_range == 0)) |
| 6610 | goto invalid_unit; |
| 6611 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6612 | /* Yes. Handling this is quite easy since the opcode value |
| 6613 | is computed with |
| 6614 | |
| 6615 | opcode = (desired line increment - line_base) |
| 6616 | + (line_range * address advance) + opcode_base |
| 6617 | */ |
| 6618 | int line_increment = (line_base |
| 6619 | + (opcode - opcode_base) % line_range); |
| 6620 | |
| 6621 | /* Perform the increments. */ |
| 6622 | line += line_increment; |
| 6623 | advance_pc ((opcode - opcode_base) / line_range); |
| 6624 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6625 | char *a = format_dwarf_addr (dwflmod, 0, address, address); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6626 | if (show_op_index) |
| 6627 | printf (gettext ("\ |
| 6628 | special opcode %u: address+%u = %s, op_index = %u, line%+d = %zu\n"), |
| 6629 | opcode, op_addr_advance, a, op_index, |
| 6630 | line_increment, line); |
| 6631 | else |
| 6632 | printf (gettext ("\ |
| 6633 | special opcode %u: address+%u = %s, line%+d = %zu\n"), |
| 6634 | opcode, op_addr_advance, a, line_increment, line); |
| 6635 | free (a); |
| 6636 | } |
| 6637 | else if (opcode == 0) |
| 6638 | { |
| 6639 | /* This an extended opcode. */ |
| 6640 | if (unlikely (linep + 2 > lineendp)) |
| 6641 | goto invalid_unit; |
| 6642 | |
| 6643 | /* The length. */ |
| 6644 | unsigned int len = *linep++; |
| 6645 | |
| 6646 | if (unlikely (linep + len > lineendp)) |
| 6647 | goto invalid_unit; |
| 6648 | |
| 6649 | /* The sub-opcode. */ |
| 6650 | opcode = *linep++; |
| 6651 | |
| 6652 | printf (gettext (" extended opcode %u: "), opcode); |
| 6653 | |
| 6654 | switch (opcode) |
| 6655 | { |
| 6656 | case DW_LNE_end_sequence: |
| 6657 | puts (gettext (" end of sequence")); |
| 6658 | |
| 6659 | /* Reset the registers we care about. */ |
| 6660 | address = 0; |
| 6661 | op_index = 0; |
| 6662 | line = 1; |
| 6663 | is_stmt = default_is_stmt; |
| 6664 | break; |
| 6665 | |
| 6666 | case DW_LNE_set_address: |
| 6667 | op_index = 0; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6668 | if (unlikely ((size_t) (lineendp - linep) < address_size)) |
| 6669 | goto invalid_unit; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6670 | if (address_size == 4) |
| 6671 | address = read_4ubyte_unaligned_inc (dbg, linep); |
| 6672 | else |
| 6673 | address = read_8ubyte_unaligned_inc (dbg, linep); |
| 6674 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6675 | char *a = format_dwarf_addr (dwflmod, 0, address, address); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6676 | printf (gettext (" set address to %s\n"), a); |
| 6677 | free (a); |
| 6678 | } |
| 6679 | break; |
| 6680 | |
| 6681 | case DW_LNE_define_file: |
| 6682 | { |
| 6683 | char *fname = (char *) linep; |
| 6684 | unsigned char *endp = memchr (linep, '\0', |
| 6685 | lineendp - linep); |
| 6686 | if (unlikely (endp == NULL)) |
| 6687 | goto invalid_unit; |
| 6688 | linep = endp + 1; |
| 6689 | |
| 6690 | unsigned int diridx; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6691 | if (lineendp - linep < 1) |
| 6692 | goto invalid_unit; |
| 6693 | get_uleb128 (diridx, linep, lineendp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6694 | Dwarf_Word mtime; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6695 | if (lineendp - linep < 1) |
| 6696 | goto invalid_unit; |
| 6697 | get_uleb128 (mtime, linep, lineendp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6698 | Dwarf_Word filelength; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6699 | if (lineendp - linep < 1) |
| 6700 | goto invalid_unit; |
| 6701 | get_uleb128 (filelength, linep, lineendp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6702 | |
| 6703 | printf (gettext ("\ |
| 6704 | define new file: dir=%u, mtime=%" PRIu64 ", length=%" PRIu64 ", name=%s\n"), |
| 6705 | diridx, (uint64_t) mtime, (uint64_t) filelength, |
| 6706 | fname); |
| 6707 | } |
| 6708 | break; |
| 6709 | |
| 6710 | case DW_LNE_set_discriminator: |
| 6711 | /* Takes one ULEB128 parameter, the discriminator. */ |
| 6712 | if (unlikely (standard_opcode_lengths[opcode] != 1)) |
| 6713 | goto invalid_unit; |
| 6714 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6715 | get_uleb128 (u128, linep, lineendp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6716 | printf (gettext (" set discriminator to %u\n"), u128); |
| 6717 | break; |
| 6718 | |
| 6719 | default: |
| 6720 | /* Unknown, ignore it. */ |
| 6721 | puts (gettext (" unknown opcode")); |
| 6722 | linep += len - 1; |
| 6723 | break; |
| 6724 | } |
| 6725 | } |
| 6726 | else if (opcode <= DW_LNS_set_isa) |
| 6727 | { |
| 6728 | /* This is a known standard opcode. */ |
| 6729 | switch (opcode) |
| 6730 | { |
| 6731 | case DW_LNS_copy: |
| 6732 | /* Takes no argument. */ |
| 6733 | puts (gettext (" copy")); |
| 6734 | break; |
| 6735 | |
| 6736 | case DW_LNS_advance_pc: |
| 6737 | /* Takes one uleb128 parameter which is added to the |
| 6738 | address. */ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6739 | get_uleb128 (u128, linep, lineendp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6740 | advance_pc (u128); |
| 6741 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6742 | char *a = format_dwarf_addr (dwflmod, 0, address, address); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6743 | if (show_op_index) |
| 6744 | printf (gettext ("\ |
| 6745 | advance address by %u to %s, op_index to %u\n"), |
| 6746 | op_addr_advance, a, op_index); |
| 6747 | else |
| 6748 | printf (gettext (" advance address by %u to %s\n"), |
| 6749 | op_addr_advance, a); |
| 6750 | free (a); |
| 6751 | } |
| 6752 | break; |
| 6753 | |
| 6754 | case DW_LNS_advance_line: |
| 6755 | /* Takes one sleb128 parameter which is added to the |
| 6756 | line. */ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6757 | get_sleb128 (s128, linep, lineendp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6758 | line += s128; |
| 6759 | printf (gettext ("\ |
| 6760 | advance line by constant %d to %" PRId64 "\n"), |
| 6761 | s128, (int64_t) line); |
| 6762 | break; |
| 6763 | |
| 6764 | case DW_LNS_set_file: |
| 6765 | /* Takes one uleb128 parameter which is stored in file. */ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6766 | get_uleb128 (u128, linep, lineendp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6767 | printf (gettext (" set file to %" PRIu64 "\n"), |
| 6768 | (uint64_t) u128); |
| 6769 | break; |
| 6770 | |
| 6771 | case DW_LNS_set_column: |
| 6772 | /* Takes one uleb128 parameter which is stored in column. */ |
| 6773 | if (unlikely (standard_opcode_lengths[opcode] != 1)) |
| 6774 | goto invalid_unit; |
| 6775 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6776 | get_uleb128 (u128, linep, lineendp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6777 | printf (gettext (" set column to %" PRIu64 "\n"), |
| 6778 | (uint64_t) u128); |
| 6779 | break; |
| 6780 | |
| 6781 | case DW_LNS_negate_stmt: |
| 6782 | /* Takes no argument. */ |
| 6783 | is_stmt = 1 - is_stmt; |
| 6784 | printf (gettext (" set '%s' to %" PRIuFAST8 "\n"), |
| 6785 | "is_stmt", is_stmt); |
| 6786 | break; |
| 6787 | |
| 6788 | case DW_LNS_set_basic_block: |
| 6789 | /* Takes no argument. */ |
| 6790 | puts (gettext (" set basic block flag")); |
| 6791 | break; |
| 6792 | |
| 6793 | case DW_LNS_const_add_pc: |
| 6794 | /* Takes no argument. */ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6795 | |
| 6796 | if (unlikely (line_range == 0)) |
| 6797 | goto invalid_unit; |
| 6798 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6799 | advance_pc ((255 - opcode_base) / line_range); |
| 6800 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6801 | char *a = format_dwarf_addr (dwflmod, 0, address, address); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6802 | if (show_op_index) |
| 6803 | printf (gettext ("\ |
| 6804 | advance address by constant %u to %s, op_index to %u\n"), |
| 6805 | op_addr_advance, a, op_index); |
| 6806 | else |
| 6807 | printf (gettext ("\ |
| 6808 | advance address by constant %u to %s\n"), |
| 6809 | op_addr_advance, a); |
| 6810 | free (a); |
| 6811 | } |
| 6812 | break; |
| 6813 | |
| 6814 | case DW_LNS_fixed_advance_pc: |
| 6815 | /* Takes one 16 bit parameter which is added to the |
| 6816 | address. */ |
| 6817 | if (unlikely (standard_opcode_lengths[opcode] != 1)) |
| 6818 | goto invalid_unit; |
| 6819 | |
| 6820 | u128 = read_2ubyte_unaligned_inc (dbg, linep); |
| 6821 | address += u128; |
| 6822 | op_index = 0; |
| 6823 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6824 | char *a = format_dwarf_addr (dwflmod, 0, address, address); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6825 | printf (gettext ("\ |
| 6826 | advance address by fixed value %u to %s\n"), |
| 6827 | u128, a); |
| 6828 | free (a); |
| 6829 | } |
| 6830 | break; |
| 6831 | |
| 6832 | case DW_LNS_set_prologue_end: |
| 6833 | /* Takes no argument. */ |
| 6834 | puts (gettext (" set prologue end flag")); |
| 6835 | break; |
| 6836 | |
| 6837 | case DW_LNS_set_epilogue_begin: |
| 6838 | /* Takes no argument. */ |
| 6839 | puts (gettext (" set epilogue begin flag")); |
| 6840 | break; |
| 6841 | |
| 6842 | case DW_LNS_set_isa: |
| 6843 | /* Takes one uleb128 parameter which is stored in isa. */ |
| 6844 | if (unlikely (standard_opcode_lengths[opcode] != 1)) |
| 6845 | goto invalid_unit; |
| 6846 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6847 | get_uleb128 (u128, linep, lineendp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6848 | printf (gettext (" set isa to %u\n"), u128); |
| 6849 | break; |
| 6850 | } |
| 6851 | } |
| 6852 | else |
| 6853 | { |
| 6854 | /* This is a new opcode the generator but not we know about. |
| 6855 | Read the parameters associated with it but then discard |
| 6856 | everything. Read all the parameters for this opcode. */ |
| 6857 | printf (ngettext (" unknown opcode with %" PRIu8 " parameter:", |
| 6858 | " unknown opcode with %" PRIu8 " parameters:", |
| 6859 | standard_opcode_lengths[opcode]), |
| 6860 | standard_opcode_lengths[opcode]); |
| 6861 | for (int n = standard_opcode_lengths[opcode]; n > 0; --n) |
| 6862 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6863 | get_uleb128 (u128, linep, lineendp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6864 | if (n != standard_opcode_lengths[opcode]) |
| 6865 | putc_unlocked (',', stdout); |
| 6866 | printf (" %u", u128); |
| 6867 | } |
| 6868 | |
| 6869 | /* Next round, ignore this opcode. */ |
| 6870 | continue; |
| 6871 | } |
| 6872 | } |
| 6873 | } |
| 6874 | |
| 6875 | /* There must only be one data block. */ |
| 6876 | assert (elf_getdata (scn, data) == NULL); |
| 6877 | } |
| 6878 | |
| 6879 | |
| 6880 | static void |
| 6881 | print_debug_loc_section (Dwfl_Module *dwflmod, |
| 6882 | Ebl *ebl, GElf_Ehdr *ehdr, |
| 6883 | Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg) |
| 6884 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6885 | Elf_Data *data = dbg->sectiondata[IDX_debug_loc]; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6886 | |
| 6887 | if (unlikely (data == NULL)) |
| 6888 | { |
| 6889 | error (0, 0, gettext ("cannot get .debug_loc content: %s"), |
| 6890 | elf_errmsg (-1)); |
| 6891 | return; |
| 6892 | } |
| 6893 | |
| 6894 | printf (gettext ("\ |
| 6895 | \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"), |
| 6896 | elf_ndxscn (scn), section_name (ebl, ehdr, shdr), |
| 6897 | (uint64_t) shdr->sh_offset); |
| 6898 | |
| 6899 | sort_listptr (&known_loclistptr, "loclistptr"); |
| 6900 | size_t listptr_idx = 0; |
| 6901 | |
| 6902 | uint_fast8_t address_size = ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8; |
| 6903 | uint_fast8_t offset_size = 4; |
| 6904 | |
| 6905 | bool first = true; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6906 | struct Dwarf_CU *cu = NULL; |
| 6907 | Dwarf_Addr base = 0; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6908 | unsigned char *readp = data->d_buf; |
| 6909 | unsigned char *const endp = (unsigned char *) data->d_buf + data->d_size; |
| 6910 | while (readp < endp) |
| 6911 | { |
| 6912 | ptrdiff_t offset = readp - (unsigned char *) data->d_buf; |
| 6913 | |
| 6914 | if (first && skip_listptr_hole (&known_loclistptr, &listptr_idx, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6915 | &address_size, &offset_size, &base, |
| 6916 | &cu, offset, &readp, endp)) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6917 | continue; |
| 6918 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6919 | if (unlikely (data->d_size - offset < (size_t) address_size * 2)) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6920 | { |
| 6921 | printf (gettext (" [%6tx] <INVALID DATA>\n"), offset); |
| 6922 | break; |
| 6923 | } |
| 6924 | |
| 6925 | Dwarf_Addr begin; |
| 6926 | Dwarf_Addr end; |
| 6927 | if (address_size == 8) |
| 6928 | { |
| 6929 | begin = read_8ubyte_unaligned_inc (dbg, readp); |
| 6930 | end = read_8ubyte_unaligned_inc (dbg, readp); |
| 6931 | } |
| 6932 | else |
| 6933 | { |
| 6934 | begin = read_4ubyte_unaligned_inc (dbg, readp); |
| 6935 | end = read_4ubyte_unaligned_inc (dbg, readp); |
| 6936 | if (begin == (Dwarf_Addr) (uint32_t) -1) |
| 6937 | begin = (Dwarf_Addr) -1l; |
| 6938 | } |
| 6939 | |
| 6940 | if (begin == (Dwarf_Addr) -1l) /* Base address entry. */ |
| 6941 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6942 | char *b = format_dwarf_addr (dwflmod, address_size, end, end); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6943 | printf (gettext (" [%6tx] base address %s\n"), offset, b); |
| 6944 | free (b); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6945 | base = end; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6946 | } |
| 6947 | else if (begin == 0 && end == 0) /* End of list entry. */ |
| 6948 | { |
| 6949 | if (first) |
| 6950 | printf (gettext (" [%6tx] empty list\n"), offset); |
| 6951 | first = true; |
| 6952 | } |
| 6953 | else |
| 6954 | { |
| 6955 | /* We have a location expression entry. */ |
| 6956 | uint_fast16_t len = read_2ubyte_unaligned_inc (dbg, readp); |
| 6957 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6958 | char *b = format_dwarf_addr (dwflmod, address_size, base + begin, |
| 6959 | begin); |
| 6960 | char *e = format_dwarf_addr (dwflmod, address_size, base + end, |
| 6961 | end); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6962 | |
| 6963 | if (first) /* First entry in a list. */ |
| 6964 | printf (gettext (" [%6tx] %s..%s"), offset, b, e); |
| 6965 | else |
| 6966 | printf (gettext (" %s..%s"), b, e); |
| 6967 | |
| 6968 | free (b); |
| 6969 | free (e); |
| 6970 | |
| 6971 | if (endp - readp <= (ptrdiff_t) len) |
| 6972 | { |
| 6973 | fputs (gettext (" <INVALID DATA>\n"), stdout); |
| 6974 | break; |
| 6975 | } |
| 6976 | |
| 6977 | print_ops (dwflmod, dbg, 1, 18 + (address_size * 4), |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 6978 | 3 /*XXX*/, address_size, offset_size, cu, len, readp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 6979 | |
| 6980 | first = false; |
| 6981 | readp += len; |
| 6982 | } |
| 6983 | } |
| 6984 | } |
| 6985 | |
| 6986 | struct mac_culist |
| 6987 | { |
| 6988 | Dwarf_Die die; |
| 6989 | Dwarf_Off offset; |
| 6990 | Dwarf_Files *files; |
| 6991 | struct mac_culist *next; |
| 6992 | }; |
| 6993 | |
| 6994 | |
| 6995 | static int |
| 6996 | mac_compare (const void *p1, const void *p2) |
| 6997 | { |
| 6998 | struct mac_culist *m1 = (struct mac_culist *) p1; |
| 6999 | struct mac_culist *m2 = (struct mac_culist *) p2; |
| 7000 | |
| 7001 | if (m1->offset < m2->offset) |
| 7002 | return -1; |
| 7003 | if (m1->offset > m2->offset) |
| 7004 | return 1; |
| 7005 | return 0; |
| 7006 | } |
| 7007 | |
| 7008 | |
| 7009 | static void |
| 7010 | print_debug_macinfo_section (Dwfl_Module *dwflmod __attribute__ ((unused)), |
| 7011 | Ebl *ebl, GElf_Ehdr *ehdr, |
| 7012 | Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg) |
| 7013 | { |
| 7014 | printf (gettext ("\ |
| 7015 | \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"), |
| 7016 | elf_ndxscn (scn), section_name (ebl, ehdr, shdr), |
| 7017 | (uint64_t) shdr->sh_offset); |
| 7018 | putc_unlocked ('\n', stdout); |
| 7019 | |
| 7020 | /* There is no function in libdw to iterate over the raw content of |
| 7021 | the section but it is easy enough to do. */ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 7022 | Elf_Data *data = dbg->sectiondata[IDX_debug_macinfo]; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 7023 | if (unlikely (data == NULL || data->d_buf == NULL)) |
| 7024 | { |
| 7025 | error (0, 0, gettext ("cannot get macro information section data: %s"), |
| 7026 | elf_errmsg (-1)); |
| 7027 | return; |
| 7028 | } |
| 7029 | |
| 7030 | /* Get the source file information for all CUs. */ |
| 7031 | Dwarf_Off offset; |
| 7032 | Dwarf_Off ncu = 0; |
| 7033 | size_t hsize; |
| 7034 | struct mac_culist *culist = NULL; |
| 7035 | size_t nculist = 0; |
| 7036 | while (dwarf_nextcu (dbg, offset = ncu, &ncu, &hsize, NULL, NULL, NULL) == 0) |
| 7037 | { |
| 7038 | Dwarf_Die cudie; |
| 7039 | if (dwarf_offdie (dbg, offset + hsize, &cudie) == NULL) |
| 7040 | continue; |
| 7041 | |
| 7042 | Dwarf_Attribute attr; |
| 7043 | if (dwarf_attr (&cudie, DW_AT_macro_info, &attr) == NULL) |
| 7044 | continue; |
| 7045 | |
| 7046 | Dwarf_Word macoff; |
| 7047 | if (dwarf_formudata (&attr, &macoff) != 0) |
| 7048 | continue; |
| 7049 | |
| 7050 | struct mac_culist *newp = (struct mac_culist *) alloca (sizeof (*newp)); |
| 7051 | newp->die = cudie; |
| 7052 | newp->offset = macoff; |
| 7053 | newp->files = NULL; |
| 7054 | newp->next = culist; |
| 7055 | culist = newp; |
| 7056 | ++nculist; |
| 7057 | } |
| 7058 | |
| 7059 | /* Convert the list into an array for easier consumption. */ |
| 7060 | struct mac_culist *cus = (struct mac_culist *) alloca ((nculist + 1) |
| 7061 | * sizeof (*cus)); |
| 7062 | /* Add sentinel. */ |
| 7063 | cus[nculist].offset = data->d_size; |
| 7064 | if (nculist > 0) |
| 7065 | { |
| 7066 | for (size_t cnt = nculist - 1; culist != NULL; --cnt) |
| 7067 | { |
| 7068 | assert (cnt < nculist); |
| 7069 | cus[cnt] = *culist; |
| 7070 | culist = culist->next; |
| 7071 | } |
| 7072 | |
| 7073 | /* Sort the array according to the offset in the .debug_macinfo |
| 7074 | section. Note we keep the sentinel at the end. */ |
| 7075 | qsort (cus, nculist, sizeof (*cus), mac_compare); |
| 7076 | } |
| 7077 | |
| 7078 | const unsigned char *readp = (const unsigned char *) data->d_buf; |
| 7079 | const unsigned char *readendp = readp + data->d_size; |
| 7080 | int level = 1; |
| 7081 | |
| 7082 | while (readp < readendp) |
| 7083 | { |
| 7084 | unsigned int opcode = *readp++; |
| 7085 | unsigned int u128; |
| 7086 | unsigned int u128_2; |
| 7087 | const unsigned char *endp; |
| 7088 | |
| 7089 | switch (opcode) |
| 7090 | { |
| 7091 | case DW_MACINFO_define: |
| 7092 | case DW_MACINFO_undef: |
| 7093 | case DW_MACINFO_vendor_ext: |
| 7094 | /* For the first two opcodes the parameters are |
| 7095 | line, string |
| 7096 | For the latter |
| 7097 | number, string. |
| 7098 | We can treat these cases together. */ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 7099 | get_uleb128 (u128, readp, readendp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 7100 | |
| 7101 | endp = memchr (readp, '\0', readendp - readp); |
| 7102 | if (unlikely (endp == NULL)) |
| 7103 | { |
| 7104 | printf (gettext ("\ |
| 7105 | %*s*** non-terminated string at end of section"), |
| 7106 | level, ""); |
| 7107 | return; |
| 7108 | } |
| 7109 | |
| 7110 | if (opcode == DW_MACINFO_define) |
| 7111 | printf ("%*s#define %s, line %u\n", |
| 7112 | level, "", (char *) readp, u128); |
| 7113 | else if (opcode == DW_MACINFO_undef) |
| 7114 | printf ("%*s#undef %s, line %u\n", |
| 7115 | level, "", (char *) readp, u128); |
| 7116 | else |
| 7117 | printf (" #vendor-ext %s, number %u\n", (char *) readp, u128); |
| 7118 | |
| 7119 | readp = endp + 1; |
| 7120 | break; |
| 7121 | |
| 7122 | case DW_MACINFO_start_file: |
| 7123 | /* The two parameters are line and file index, in this order. */ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 7124 | get_uleb128 (u128, readp, readendp); |
| 7125 | if (readendp - readp < 1) |
| 7126 | { |
| 7127 | printf (gettext ("\ |
| 7128 | %*s*** missing DW_MACINFO_start_file argument at end of section"), |
| 7129 | level, ""); |
| 7130 | return; |
| 7131 | } |
| 7132 | get_uleb128 (u128_2, readp, readendp); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 7133 | |
| 7134 | /* Find the CU DIE for this file. */ |
| 7135 | size_t macoff = readp - (const unsigned char *) data->d_buf; |
| 7136 | const char *fname = "???"; |
| 7137 | if (macoff >= cus[0].offset) |
| 7138 | { |
| 7139 | while (macoff >= cus[1].offset) |
| 7140 | ++cus; |
| 7141 | |
| 7142 | if (cus[0].files == NULL |
| 7143 | && dwarf_getsrcfiles (&cus[0].die, &cus[0].files, NULL) != 0) |
| 7144 | cus[0].files = (Dwarf_Files *) -1l; |
| 7145 | |
| 7146 | if (cus[0].files != (Dwarf_Files *) -1l) |
| 7147 | fname = (dwarf_filesrc (cus[0].files, u128_2, NULL, NULL) |
| 7148 | ?: "???"); |
| 7149 | } |
| 7150 | |
| 7151 | printf ("%*sstart_file %u, [%u] %s\n", |
| 7152 | level, "", u128, u128_2, fname); |
| 7153 | ++level; |
| 7154 | break; |
| 7155 | |
| 7156 | case DW_MACINFO_end_file: |
| 7157 | --level; |
| 7158 | printf ("%*send_file\n", level, ""); |
| 7159 | /* Nothing more to do. */ |
| 7160 | break; |
| 7161 | |
| 7162 | default: |
| 7163 | // XXX gcc seems to generate files with a trailing zero. |
| 7164 | if (unlikely (opcode != 0 || readp != readendp)) |
| 7165 | printf ("%*s*** invalid opcode %u\n", level, "", opcode); |
| 7166 | break; |
| 7167 | } |
| 7168 | } |
| 7169 | } |
| 7170 | |
| 7171 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 7172 | static void |
| 7173 | print_debug_macro_section (Dwfl_Module *dwflmod __attribute__ ((unused)), |
| 7174 | Ebl *ebl, GElf_Ehdr *ehdr, |
| 7175 | Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg) |
| 7176 | { |
| 7177 | printf (gettext ("\ |
| 7178 | \nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"), |
| 7179 | elf_ndxscn (scn), section_name (ebl, ehdr, shdr), |
| 7180 | (uint64_t) shdr->sh_offset); |
| 7181 | putc_unlocked ('\n', stdout); |
| 7182 | |
| 7183 | Elf_Data *data = dbg->sectiondata[IDX_debug_macro]; |
| 7184 | if (unlikely (data == NULL || data->d_buf == NULL)) |
| 7185 | { |
| 7186 | error (0, 0, gettext ("cannot get macro information section data: %s"), |
| 7187 | elf_errmsg (-1)); |
| 7188 | return; |
| 7189 | } |
| 7190 | |
| 7191 | /* Get the source file information for all CUs. Uses same |
| 7192 | datastructure as macinfo. But uses offset field to directly |
| 7193 | match .debug_line offset. And just stored in a list. */ |
| 7194 | Dwarf_Off offset; |
| 7195 | Dwarf_Off ncu = 0; |
| 7196 | size_t hsize; |
| 7197 | struct mac_culist *culist = NULL; |
| 7198 | size_t nculist = 0; |
| 7199 | while (dwarf_nextcu (dbg, offset = ncu, &ncu, &hsize, NULL, NULL, NULL) == 0) |
| 7200 | { |
| 7201 | Dwarf_Die cudie; |
| 7202 | if (dwarf_offdie (dbg, offset + hsize, &cudie) == NULL) |
| 7203 | continue; |
| 7204 | |
| 7205 | Dwarf_Attribute attr; |
| 7206 | if (dwarf_attr (&cudie, DW_AT_stmt_list, &attr) == NULL) |
| 7207 | continue; |
| 7208 | |
| 7209 | Dwarf_Word lineoff; |
| 7210 | if (dwarf_formudata (&attr, &lineoff) != 0) |
| 7211 | continue; |
| 7212 | |
| 7213 | struct mac_culist *newp = (struct mac_culist *) alloca (sizeof (*newp)); |
| 7214 | newp->die = cudie; |
| 7215 | newp->offset = lineoff; |
| 7216 | newp->files = NULL; |
| 7217 | newp->next = culist; |
| 7218 | culist = newp; |
| 7219 | ++nculist; |
| 7220 | } |
| 7221 | |
| 7222 | const unsigned char *readp = (const unsigned char *) data->d_buf; |
| 7223 | const unsigned char *readendp = readp + data->d_size; |
| 7224 | |
| 7225 | while (readp < readendp) |
| 7226 | { |
| 7227 | printf (gettext (" Offset: 0x%" PRIx64 "\n"), |
| 7228 | (uint64_t) (readp - (const unsigned char *) data->d_buf)); |
| 7229 | |
| 7230 | // Header, 2 byte version, 1 byte flag, optional .debug_line offset, |
| 7231 | // optional vendor extension macro entry table. |
| 7232 | if (readp + 2 > readendp) |
| 7233 | { |
| 7234 | invalid_data: |
| 7235 | error (0, 0, gettext ("invalid data")); |
| 7236 | return; |
| 7237 | } |
| 7238 | const uint16_t vers = read_2ubyte_unaligned_inc (dbg, readp); |
| 7239 | printf (gettext (" Version: %" PRIu16 "\n"), vers); |
| 7240 | |
| 7241 | // Version 4 is the GNU extension for DWARF4. DWARF5 will use version |
| 7242 | // 5 when it gets standardized. |
| 7243 | if (vers != 4) |
| 7244 | { |
| 7245 | printf (gettext (" unknown version, cannot parse section\n")); |
| 7246 | return; |
| 7247 | } |
| 7248 | |
| 7249 | if (readp + 1 > readendp) |
| 7250 | goto invalid_data; |
| 7251 | const unsigned char flag = *readp++; |
| 7252 | printf (gettext (" Flag: 0x%" PRIx8 "\n"), flag); |
| 7253 | |
| 7254 | unsigned int offset_len = (flag & 0x01) ? 8 : 4; |
| 7255 | printf (gettext (" Offset length: %" PRIu8 "\n"), offset_len); |
| 7256 | Dwarf_Off line_offset = -1; |
| 7257 | if (flag & 0x02) |
| 7258 | { |
| 7259 | if (offset_len == 8) |
| 7260 | line_offset = read_8ubyte_unaligned_inc (dbg, readp); |
| 7261 | else |
| 7262 | line_offset = read_4ubyte_unaligned_inc (dbg, readp); |
| 7263 | printf (gettext (" .debug_line offset: 0x%" PRIx64 "\n"), |
| 7264 | line_offset); |
| 7265 | } |
| 7266 | |
| 7267 | const unsigned char *vendor[DW_MACRO_GNU_hi_user - DW_MACRO_GNU_lo_user]; |
| 7268 | memset (vendor, 0, sizeof vendor); |
| 7269 | if (flag & 0x04) |
| 7270 | { |
| 7271 | // 1 byte length, for each item, 1 byte opcode, uleb128 number |
| 7272 | // of arguments, for each argument 1 byte form code. |
| 7273 | if (readp + 1 > readendp) |
| 7274 | goto invalid_data; |
| 7275 | unsigned int tlen = *readp++; |
| 7276 | printf (gettext (" extension opcode table, %" PRIu8 " items:\n"), |
| 7277 | tlen); |
| 7278 | for (unsigned int i = 0; i < tlen; i++) |
| 7279 | { |
| 7280 | if (readp + 1 > readendp) |
| 7281 | goto invalid_data; |
| 7282 | unsigned int opcode = *readp++; |
| 7283 | printf (gettext (" [%" PRIx8 "]"), opcode); |
| 7284 | if (opcode < DW_MACRO_GNU_lo_user |
| 7285 | || opcode > DW_MACRO_GNU_hi_user) |
| 7286 | goto invalid_data; |
| 7287 | // Record the start of description for this vendor opcode. |
| 7288 | // uleb128 nr args, 1 byte per arg form. |
| 7289 | vendor[opcode - DW_MACRO_GNU_lo_user] = readp; |
| 7290 | if (readp + 1 > readendp) |
| 7291 | goto invalid_data; |
| 7292 | unsigned int args = *readp++; |
| 7293 | if (args > 0) |
| 7294 | { |
| 7295 | printf (gettext (" %" PRIu8 " arguments:"), args); |
| 7296 | while (args > 0) |
| 7297 | { |
| 7298 | if (readp + 1 > readendp) |
| 7299 | goto invalid_data; |
| 7300 | unsigned int form = *readp++; |
| 7301 | printf (" %s", dwarf_form_string (form)); |
| 7302 | if (form != DW_FORM_data1 |
| 7303 | && form != DW_FORM_data2 |
| 7304 | && form != DW_FORM_data4 |
| 7305 | && form != DW_FORM_data8 |
| 7306 | && form != DW_FORM_sdata |
| 7307 | && form != DW_FORM_udata |
| 7308 | && form != DW_FORM_block |
| 7309 | && form != DW_FORM_block1 |
| 7310 | && form != DW_FORM_block2 |
| 7311 | && form != DW_FORM_block4 |
| 7312 | && form != DW_FORM_flag |
| 7313 | && form != DW_FORM_string |
| 7314 | && form != DW_FORM_strp |
| 7315 | && form != DW_FORM_sec_offset) |
| 7316 | goto invalid_data; |
| 7317 | args--; |
| 7318 | if (args > 0) |
| 7319 | putchar_unlocked (','); |
| 7320 | } |
| 7321 | } |
| 7322 | else |
| 7323 | printf (gettext (" no arguments.")); |
| 7324 | putchar_unlocked ('\n'); |
| 7325 | } |
| 7326 | } |
| 7327 | putchar_unlocked ('\n'); |
| 7328 | |
| 7329 | int level = 1; |
| 7330 | if (readp + 1 > readendp) |
| 7331 | goto invalid_data; |
| 7332 | unsigned int opcode = *readp++; |
| 7333 | while (opcode != 0) |
| 7334 | { |
| 7335 | unsigned int u128; |
| 7336 | unsigned int u128_2; |
| 7337 | const unsigned char *endp; |
| 7338 | uint64_t off; |
| 7339 | |
| 7340 | switch (opcode) |
| 7341 | { |
| 7342 | case DW_MACRO_GNU_start_file: |
| 7343 | get_uleb128 (u128, readp, readendp); |
| 7344 | if (readp >= readendp) |
| 7345 | goto invalid_data; |
| 7346 | get_uleb128 (u128_2, readp, readendp); |
| 7347 | |
| 7348 | /* Find the CU DIE that matches this line offset. */ |
| 7349 | const char *fname = "???"; |
| 7350 | if (line_offset != (Dwarf_Off) -1) |
| 7351 | { |
| 7352 | struct mac_culist *cu = culist; |
| 7353 | while (cu != NULL && line_offset != cu->offset) |
| 7354 | cu = cu->next; |
| 7355 | if (cu != NULL) |
| 7356 | { |
| 7357 | if (cu->files == NULL |
| 7358 | && dwarf_getsrcfiles (&cu->die, &cu->files, |
| 7359 | NULL) != 0) |
| 7360 | cu->files = (Dwarf_Files *) -1l; |
| 7361 | |
| 7362 | if (cu->files != (Dwarf_Files *) -1l) |
| 7363 | fname = (dwarf_filesrc (cu->files, u128_2, |
| 7364 | NULL, NULL) ?: "???"); |
| 7365 | } |
| 7366 | } |
| 7367 | printf ("%*sstart_file %u, [%u] %s\n", |
| 7368 | level, "", u128, u128_2, fname); |
| 7369 | ++level; |
| 7370 | break; |
| 7371 | |
| 7372 | case DW_MACRO_GNU_end_file: |
| 7373 | --level; |
| 7374 | printf ("%*send_file\n", level, ""); |
| 7375 | break; |
| 7376 | |
| 7377 | case DW_MACRO_GNU_define: |
| 7378 | get_uleb128 (u128, readp, readendp); |
| 7379 | endp = memchr (readp, '\0', readendp - readp); |
| 7380 | if (endp == NULL) |
| 7381 | goto invalid_data; |
| 7382 | printf ("%*s#define %s, line %u\n", |
| 7383 | level, "", readp, u128); |
| 7384 | readp = endp + 1; |
| 7385 | break; |
| 7386 | |
| 7387 | case DW_MACRO_GNU_undef: |
| 7388 | get_uleb128 (u128, readp, readendp); |
| 7389 | endp = memchr (readp, '\0', readendp - readp); |
| 7390 | if (endp == NULL) |
| 7391 | goto invalid_data; |
| 7392 | printf ("%*s#undef %s, line %u\n", |
| 7393 | level, "", readp, u128); |
| 7394 | readp = endp + 1; |
| 7395 | break; |
| 7396 | |
| 7397 | case DW_MACRO_GNU_define_indirect: |
| 7398 | get_uleb128 (u128, readp, readendp); |
| 7399 | if (readp + offset_len > readendp) |
| 7400 | goto invalid_data; |
| 7401 | if (offset_len == 8) |
| 7402 | off = read_8ubyte_unaligned_inc (dbg, readp); |
| 7403 | else |
| 7404 | off = read_4ubyte_unaligned_inc (dbg, readp); |
| 7405 | printf ("%*s#define %s, line %u (indirect)\n", |
| 7406 | level, "", dwarf_getstring (dbg, off, NULL), u128); |
| 7407 | break; |
| 7408 | |
| 7409 | case DW_MACRO_GNU_undef_indirect: |
| 7410 | get_uleb128 (u128, readp, readendp); |
| 7411 | if (readp + offset_len > readendp) |
| 7412 | goto invalid_data; |
| 7413 | if (offset_len == 8) |
| 7414 | off = read_8ubyte_unaligned_inc (dbg, readp); |
| 7415 | else |
| 7416 | off = read_4ubyte_unaligned_inc (dbg, readp); |
| 7417 | printf ("%*s#undef %s, line %u (indirect)\n", |
| 7418 | level, "", dwarf_getstring (dbg, off, NULL), u128); |
| 7419 | break; |
| 7420 | |
| 7421 | case DW_MACRO_GNU_transparent_include: |
| 7422 | if (readp + offset_len > readendp) |
| 7423 | goto invalid_data; |
| 7424 | if (offset_len == 8) |
| 7425 | off = read_8ubyte_unaligned_inc (dbg, readp); |
| 7426 | else |
| 7427 | off = read_4ubyte_unaligned_inc (dbg, readp); |
| 7428 | printf ("%*s#include offset 0x%" PRIx64 "\n", |
| 7429 | level, "", off); |
| 7430 | break; |
| 7431 | |
| 7432 | default: |
| 7433 | printf ("%*svendor opcode 0x%" PRIx8, level, "", opcode); |
| 7434 | if (opcode < DW_MACRO_GNU_lo_user |
| 7435 | || opcode > DW_MACRO_GNU_lo_user |
| 7436 | || vendor[opcode - DW_MACRO_GNU_lo_user] == NULL) |
| 7437 | goto invalid_data; |
| 7438 | |
| 7439 | const unsigned char *op_desc; |
| 7440 | op_desc = vendor[opcode - DW_MACRO_GNU_lo_user]; |
| 7441 | |
| 7442 | // Just skip the arguments, we cannot really interpret them, |
| 7443 | // but print as much as we can. |
| 7444 | unsigned int args = *op_desc++; |
| 7445 | while (args > 0) |
| 7446 | { |
| 7447 | unsigned int form = *op_desc++; |
| 7448 | Dwarf_Word val; |
| 7449 | switch (form) |
| 7450 | { |
| 7451 | case DW_FORM_data1: |
| 7452 | if (readp + 1 > readendp) |
| 7453 | goto invalid_data; |
| 7454 | val = *readp++; |
| 7455 | printf (" %" PRIx8, (unsigned int) val); |
| 7456 | break; |
| 7457 | |
| 7458 | case DW_FORM_data2: |
| 7459 | if (readp + 2 > readendp) |
| 7460 | goto invalid_data; |
| 7461 | val = read_2ubyte_unaligned_inc (dbg, readp); |
| 7462 | printf(" %" PRIx16, (unsigned int) val); |
| 7463 | break; |
| 7464 | |
| 7465 | case DW_FORM_data4: |
| 7466 | if (readp + 4 > readendp) |
| 7467 | goto invalid_data; |
| 7468 | val = read_4ubyte_unaligned_inc (dbg, readp); |
| 7469 | printf (" %" PRIx32, (unsigned int) val); |
| 7470 | break; |
| 7471 | |
| 7472 | case DW_FORM_data8: |
| 7473 | if (readp + 8 > readendp) |
| 7474 | goto invalid_data; |
| 7475 | val = read_8ubyte_unaligned_inc (dbg, readp); |
| 7476 | printf (" %" PRIx64, val); |
| 7477 | break; |
| 7478 | |
| 7479 | case DW_FORM_sdata: |
| 7480 | get_sleb128 (val, readp, readendp); |
| 7481 | printf (" %" PRIx64, val); |
| 7482 | break; |
| 7483 | |
| 7484 | case DW_FORM_udata: |
| 7485 | get_uleb128 (val, readp, readendp); |
| 7486 | printf (" %" PRIx64, val); |
| 7487 | break; |
| 7488 | |
| 7489 | case DW_FORM_block: |
| 7490 | get_uleb128 (val, readp, readendp); |
| 7491 | printf (" block[%" PRIu64 "]", val); |
| 7492 | if (readp + val > readendp) |
| 7493 | goto invalid_data; |
| 7494 | readp += val; |
| 7495 | break; |
| 7496 | |
| 7497 | case DW_FORM_block1: |
| 7498 | if (readp + 1 > readendp) |
| 7499 | goto invalid_data; |
| 7500 | val = *readp++; |
| 7501 | printf (" block[%" PRIu64 "]", val); |
| 7502 | if (readp + val > readendp) |
| 7503 | goto invalid_data; |
| 7504 | break; |
| 7505 | |
| 7506 | case DW_FORM_block2: |
| 7507 | if (readp + 2 > readendp) |
| 7508 | goto invalid_data; |
| 7509 | val = read_2ubyte_unaligned_inc (dbg, readp); |
| 7510 | printf (" block[%" PRIu64 "]", val); |
| 7511 | if (readp + val > readendp) |
| 7512 | goto invalid_data; |
| 7513 | break; |
| 7514 | |
| 7515 | case DW_FORM_block4: |
| 7516 | if (readp + 2 > readendp) |
| 7517 | goto invalid_data; |
| 7518 | val =read_4ubyte_unaligned_inc (dbg, readp); |
| 7519 | printf (" block[%" PRIu64 "]", val); |
| 7520 | if (readp + val > readendp) |
| 7521 | goto invalid_data; |
| 7522 | break; |
| 7523 | |
| 7524 | case DW_FORM_flag: |
| 7525 | if (readp + 1 > readendp) |
| 7526 | goto invalid_data; |
| 7527 | val = *readp++; |
| 7528 | printf (" %s", nl_langinfo (val != 0 ? YESSTR : NOSTR)); |
| 7529 | break; |
| 7530 | |
| 7531 | case DW_FORM_string: |
| 7532 | endp = memchr (readp, '\0', readendp - readp); |
| 7533 | if (endp == NULL) |
| 7534 | goto invalid_data; |
| 7535 | printf (" %s", readp); |
| 7536 | readp = endp + 1; |
| 7537 | break; |
| 7538 | |
| 7539 | case DW_FORM_strp: |
| 7540 | if (readp + offset_len > readendp) |
| 7541 | goto invalid_data; |
| 7542 | if (offset_len == 8) |
| 7543 | val = read_8ubyte_unaligned_inc (dbg, readp); |
| 7544 | else |
| 7545 | val = read_4ubyte_unaligned_inc (dbg, readp); |
| 7546 | printf (" %s", dwarf_getstring (dbg, val, NULL)); |
| 7547 | break; |
| 7548 | |
| 7549 | case DW_FORM_sec_offset: |
| 7550 | if (readp + offset_len > readendp) |
| 7551 | goto invalid_data; |
| 7552 | if (offset_len == 8) |
| 7553 | val = read_8ubyte_unaligned_inc (dbg, readp); |
| 7554 | else |
| 7555 | val = read_4ubyte_unaligned_inc (dbg, readp); |
| 7556 | printf (" %" PRIx64, val); |
| 7557 | break; |
| 7558 | |
| 7559 | default: |
| 7560 | error (0, 0, gettext ("vendor opcode not verified?")); |
| 7561 | return; |
| 7562 | } |
| 7563 | |
| 7564 | args--; |
| 7565 | if (args > 0) |
| 7566 | putchar_unlocked (','); |
| 7567 | } |
| 7568 | putchar_unlocked ('\n'); |
| 7569 | } |
| 7570 | |
| 7571 | if (readp + 1 > readendp) |
| 7572 | goto invalid_data; |
| 7573 | opcode = *readp++; |
| 7574 | if (opcode == 0) |
| 7575 | putchar_unlocked ('\n'); |
| 7576 | } |
| 7577 | } |
| 7578 | } |
| 7579 | |
| 7580 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 7581 | /* Callback for printing global names. */ |
| 7582 | static int |
| 7583 | print_pubnames (Dwarf *dbg __attribute__ ((unused)), Dwarf_Global *global, |
| 7584 | void *arg) |
| 7585 | { |
| 7586 | int *np = (int *) arg; |
| 7587 | |
| 7588 | printf (gettext (" [%5d] DIE offset: %6" PRId64 |
| 7589 | ", CU DIE offset: %6" PRId64 ", name: %s\n"), |
| 7590 | (*np)++, global->die_offset, global->cu_offset, global->name); |
| 7591 | |
| 7592 | return 0; |
| 7593 | } |
| 7594 | |
| 7595 | |
| 7596 | /* Print the known exported symbols in the DWARF section '.debug_pubnames'. */ |
| 7597 | static void |
| 7598 | print_debug_pubnames_section (Dwfl_Module *dwflmod __attribute__ ((unused)), |
| 7599 | Ebl *ebl, GElf_Ehdr *ehdr, |
| 7600 | Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg) |
| 7601 | { |
| 7602 | printf (gettext ("\nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"), |
| 7603 | elf_ndxscn (scn), section_name (ebl, ehdr, shdr), |
| 7604 | (uint64_t) shdr->sh_offset); |
| 7605 | |
| 7606 | int n = 0; |
| 7607 | (void) dwarf_getpubnames (dbg, print_pubnames, &n, 0); |
| 7608 | } |
| 7609 | |
| 7610 | /* Print the content of the DWARF string section '.debug_str'. */ |
| 7611 | static void |
| 7612 | print_debug_str_section (Dwfl_Module *dwflmod __attribute__ ((unused)), |
| 7613 | Ebl *ebl, GElf_Ehdr *ehdr, |
| 7614 | Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg) |
| 7615 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 7616 | const size_t sh_size = (dbg->sectiondata[IDX_debug_str] ? |
| 7617 | dbg->sectiondata[IDX_debug_str]->d_size : 0); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 7618 | |
| 7619 | /* Compute floor(log16(shdr->sh_size)). */ |
| 7620 | GElf_Addr tmp = sh_size; |
| 7621 | int digits = 1; |
| 7622 | while (tmp >= 16) |
| 7623 | { |
| 7624 | ++digits; |
| 7625 | tmp >>= 4; |
| 7626 | } |
| 7627 | digits = MAX (4, digits); |
| 7628 | |
| 7629 | printf (gettext ("\nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n" |
| 7630 | " %*s String\n"), |
| 7631 | elf_ndxscn (scn), |
| 7632 | section_name (ebl, ehdr, shdr), (uint64_t) shdr->sh_offset, |
| 7633 | /* TRANS: the debugstr| prefix makes the string unique. */ |
| 7634 | digits + 2, sgettext ("debugstr|Offset")); |
| 7635 | |
| 7636 | Dwarf_Off offset = 0; |
| 7637 | while (offset < sh_size) |
| 7638 | { |
| 7639 | size_t len; |
| 7640 | const char *str = dwarf_getstring (dbg, offset, &len); |
| 7641 | if (unlikely (str == NULL)) |
| 7642 | { |
| 7643 | printf (gettext (" *** error while reading strings: %s\n"), |
| 7644 | dwarf_errmsg (-1)); |
| 7645 | break; |
| 7646 | } |
| 7647 | |
| 7648 | printf (" [%*" PRIx64 "] \"%s\"\n", digits, (uint64_t) offset, str); |
| 7649 | |
| 7650 | offset += len + 1; |
| 7651 | } |
| 7652 | } |
| 7653 | |
| 7654 | |
| 7655 | /* Print the content of the call frame search table section |
| 7656 | '.eh_frame_hdr'. */ |
| 7657 | static void |
| 7658 | print_debug_frame_hdr_section (Dwfl_Module *dwflmod __attribute__ ((unused)), |
| 7659 | Ebl *ebl __attribute__ ((unused)), |
| 7660 | GElf_Ehdr *ehdr __attribute__ ((unused)), |
| 7661 | Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg) |
| 7662 | { |
| 7663 | printf (gettext ("\ |
| 7664 | \nCall frame search table section [%2zu] '.eh_frame_hdr':\n"), |
| 7665 | elf_ndxscn (scn)); |
| 7666 | |
| 7667 | Elf_Data *data = elf_rawdata (scn, NULL); |
| 7668 | |
| 7669 | if (unlikely (data == NULL)) |
| 7670 | { |
| 7671 | error (0, 0, gettext ("cannot get %s content: %s"), |
| 7672 | ".eh_frame_hdr", elf_errmsg (-1)); |
| 7673 | return; |
| 7674 | } |
| 7675 | |
| 7676 | const unsigned char *readp = data->d_buf; |
| 7677 | const unsigned char *const dataend = ((unsigned char *) data->d_buf |
| 7678 | + data->d_size); |
| 7679 | |
| 7680 | if (unlikely (readp + 4 > dataend)) |
| 7681 | { |
| 7682 | invalid_data: |
| 7683 | error (0, 0, gettext ("invalid data")); |
| 7684 | return; |
| 7685 | } |
| 7686 | |
| 7687 | unsigned int version = *readp++; |
| 7688 | unsigned int eh_frame_ptr_enc = *readp++; |
| 7689 | unsigned int fde_count_enc = *readp++; |
| 7690 | unsigned int table_enc = *readp++; |
| 7691 | |
| 7692 | printf (" version: %u\n" |
| 7693 | " eh_frame_ptr_enc: %#x ", |
| 7694 | version, eh_frame_ptr_enc); |
| 7695 | print_encoding_base ("", eh_frame_ptr_enc); |
| 7696 | printf (" fde_count_enc: %#x ", fde_count_enc); |
| 7697 | print_encoding_base ("", fde_count_enc); |
| 7698 | printf (" table_enc: %#x ", table_enc); |
| 7699 | print_encoding_base ("", table_enc); |
| 7700 | |
| 7701 | uint64_t eh_frame_ptr = 0; |
| 7702 | if (eh_frame_ptr_enc != DW_EH_PE_omit) |
| 7703 | { |
| 7704 | readp = read_encoded (eh_frame_ptr_enc, readp, dataend, &eh_frame_ptr, |
| 7705 | dbg); |
| 7706 | if (unlikely (readp == NULL)) |
| 7707 | goto invalid_data; |
| 7708 | |
| 7709 | printf (" eh_frame_ptr: %#" PRIx64, eh_frame_ptr); |
| 7710 | if ((eh_frame_ptr_enc & 0x70) == DW_EH_PE_pcrel) |
| 7711 | printf (" (offset: %#" PRIx64 ")", |
| 7712 | /* +4 because of the 4 byte header of the section. */ |
| 7713 | (uint64_t) shdr->sh_offset + 4 + eh_frame_ptr); |
| 7714 | |
| 7715 | putchar_unlocked ('\n'); |
| 7716 | } |
| 7717 | |
| 7718 | uint64_t fde_count = 0; |
| 7719 | if (fde_count_enc != DW_EH_PE_omit) |
| 7720 | { |
| 7721 | readp = read_encoded (fde_count_enc, readp, dataend, &fde_count, dbg); |
| 7722 | if (unlikely (readp == NULL)) |
| 7723 | goto invalid_data; |
| 7724 | |
| 7725 | printf (" fde_count: %" PRIu64 "\n", fde_count); |
| 7726 | } |
| 7727 | |
| 7728 | if (fde_count == 0 || table_enc == DW_EH_PE_omit) |
| 7729 | return; |
| 7730 | |
| 7731 | puts (" Table:"); |
| 7732 | |
| 7733 | /* Optimize for the most common case. */ |
| 7734 | if (table_enc == (DW_EH_PE_datarel | DW_EH_PE_sdata4)) |
| 7735 | while (fde_count > 0 && readp + 8 <= dataend) |
| 7736 | { |
| 7737 | int32_t initial_location = read_4sbyte_unaligned_inc (dbg, readp); |
| 7738 | uint64_t initial_offset = ((uint64_t) shdr->sh_offset |
| 7739 | + (int64_t) initial_location); |
| 7740 | int32_t address = read_4sbyte_unaligned_inc (dbg, readp); |
| 7741 | // XXX Possibly print symbol name or section offset for initial_offset |
| 7742 | printf (" %#" PRIx32 " (offset: %#6" PRIx64 ") -> %#" PRIx32 |
| 7743 | " fde=[%6" PRIx64 "]\n", |
| 7744 | initial_location, initial_offset, |
| 7745 | address, address - (eh_frame_ptr + 4)); |
| 7746 | } |
| 7747 | else |
| 7748 | while (0 && readp < dataend) |
| 7749 | { |
| 7750 | |
| 7751 | } |
| 7752 | } |
| 7753 | |
| 7754 | |
| 7755 | /* Print the content of the exception handling table section |
| 7756 | '.eh_frame_hdr'. */ |
| 7757 | static void |
| 7758 | print_debug_exception_table (Dwfl_Module *dwflmod __attribute__ ((unused)), |
| 7759 | Ebl *ebl __attribute__ ((unused)), |
| 7760 | GElf_Ehdr *ehdr __attribute__ ((unused)), |
| 7761 | Elf_Scn *scn, |
| 7762 | GElf_Shdr *shdr __attribute__ ((unused)), |
| 7763 | Dwarf *dbg __attribute__ ((unused))) |
| 7764 | { |
| 7765 | printf (gettext ("\ |
| 7766 | \nException handling table section [%2zu] '.gcc_except_table':\n"), |
| 7767 | elf_ndxscn (scn)); |
| 7768 | |
| 7769 | Elf_Data *data = elf_rawdata (scn, NULL); |
| 7770 | |
| 7771 | if (unlikely (data == NULL)) |
| 7772 | { |
| 7773 | error (0, 0, gettext ("cannot get %s content: %s"), |
| 7774 | ".gcc_except_table", elf_errmsg (-1)); |
| 7775 | return; |
| 7776 | } |
| 7777 | |
| 7778 | const unsigned char *readp = data->d_buf; |
| 7779 | const unsigned char *const dataend = readp + data->d_size; |
| 7780 | |
| 7781 | if (unlikely (readp + 1 > dataend)) |
| 7782 | { |
| 7783 | invalid_data: |
| 7784 | error (0, 0, gettext ("invalid data")); |
| 7785 | return; |
| 7786 | } |
| 7787 | unsigned int lpstart_encoding = *readp++; |
| 7788 | printf (gettext (" LPStart encoding: %#x "), lpstart_encoding); |
| 7789 | print_encoding_base ("", lpstart_encoding); |
| 7790 | if (lpstart_encoding != DW_EH_PE_omit) |
| 7791 | { |
| 7792 | uint64_t lpstart; |
| 7793 | readp = read_encoded (lpstart_encoding, readp, dataend, &lpstart, dbg); |
| 7794 | printf (" LPStart: %#" PRIx64 "\n", lpstart); |
| 7795 | } |
| 7796 | |
| 7797 | if (unlikely (readp + 1 > dataend)) |
| 7798 | goto invalid_data; |
| 7799 | unsigned int ttype_encoding = *readp++; |
| 7800 | printf (gettext (" TType encoding: %#x "), ttype_encoding); |
| 7801 | print_encoding_base ("", ttype_encoding); |
| 7802 | const unsigned char *ttype_base = NULL; |
| 7803 | if (ttype_encoding != DW_EH_PE_omit) |
| 7804 | { |
| 7805 | unsigned int ttype_base_offset; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 7806 | get_uleb128 (ttype_base_offset, readp, dataend); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 7807 | printf (" TType base offset: %#x\n", ttype_base_offset); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 7808 | if ((size_t) (dataend - readp) > ttype_base_offset) |
| 7809 | ttype_base = readp + ttype_base_offset; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 7810 | } |
| 7811 | |
| 7812 | if (unlikely (readp + 1 > dataend)) |
| 7813 | goto invalid_data; |
| 7814 | unsigned int call_site_encoding = *readp++; |
| 7815 | printf (gettext (" Call site encoding: %#x "), call_site_encoding); |
| 7816 | print_encoding_base ("", call_site_encoding); |
| 7817 | unsigned int call_site_table_len; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 7818 | get_uleb128 (call_site_table_len, readp, dataend); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 7819 | |
| 7820 | const unsigned char *const action_table = readp + call_site_table_len; |
| 7821 | if (unlikely (action_table > dataend)) |
| 7822 | goto invalid_data; |
| 7823 | unsigned int u = 0; |
| 7824 | unsigned int max_action = 0; |
| 7825 | while (readp < action_table) |
| 7826 | { |
| 7827 | if (u == 0) |
| 7828 | puts (gettext ("\n Call site table:")); |
| 7829 | |
| 7830 | uint64_t call_site_start; |
| 7831 | readp = read_encoded (call_site_encoding, readp, dataend, |
| 7832 | &call_site_start, dbg); |
| 7833 | uint64_t call_site_length; |
| 7834 | readp = read_encoded (call_site_encoding, readp, dataend, |
| 7835 | &call_site_length, dbg); |
| 7836 | uint64_t landing_pad; |
| 7837 | readp = read_encoded (call_site_encoding, readp, dataend, |
| 7838 | &landing_pad, dbg); |
| 7839 | unsigned int action; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 7840 | get_uleb128 (action, readp, dataend); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 7841 | max_action = MAX (action, max_action); |
| 7842 | printf (gettext (" [%4u] Call site start: %#" PRIx64 "\n" |
| 7843 | " Call site length: %" PRIu64 "\n" |
| 7844 | " Landing pad: %#" PRIx64 "\n" |
| 7845 | " Action: %u\n"), |
| 7846 | u++, call_site_start, call_site_length, landing_pad, action); |
| 7847 | } |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 7848 | if (readp != action_table) |
| 7849 | goto invalid_data; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 7850 | |
| 7851 | unsigned int max_ar_filter = 0; |
| 7852 | if (max_action > 0) |
| 7853 | { |
| 7854 | puts ("\n Action table:"); |
| 7855 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 7856 | if ((size_t) (dataend - action_table) < max_action + 1) |
| 7857 | { |
| 7858 | fputs (gettext (" <INVALID DATA>\n"), stdout); |
| 7859 | return; |
| 7860 | } |
| 7861 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 7862 | const unsigned char *const action_table_end |
| 7863 | = action_table + max_action + 1; |
| 7864 | |
| 7865 | u = 0; |
| 7866 | do |
| 7867 | { |
| 7868 | int ar_filter; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 7869 | get_sleb128 (ar_filter, readp, action_table_end); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 7870 | if (ar_filter > 0 && (unsigned int) ar_filter > max_ar_filter) |
| 7871 | max_ar_filter = ar_filter; |
| 7872 | int ar_disp; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 7873 | get_sleb128 (ar_disp, readp, action_table_end); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 7874 | |
| 7875 | printf (" [%4u] ar_filter: % d\n" |
| 7876 | " ar_disp: % -5d", |
| 7877 | u, ar_filter, ar_disp); |
| 7878 | if (abs (ar_disp) & 1) |
| 7879 | printf (" -> [%4u]\n", u + (ar_disp + 1) / 2); |
| 7880 | else if (ar_disp != 0) |
| 7881 | puts (" -> ???"); |
| 7882 | else |
| 7883 | putchar_unlocked ('\n'); |
| 7884 | ++u; |
| 7885 | } |
| 7886 | while (readp < action_table_end); |
| 7887 | } |
| 7888 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 7889 | if (max_ar_filter > 0 && ttype_base != NULL) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 7890 | { |
| 7891 | puts ("\n TType table:"); |
| 7892 | |
| 7893 | // XXX Not *4, size of encoding; |
| 7894 | switch (ttype_encoding & 7) |
| 7895 | { |
| 7896 | case DW_EH_PE_udata2: |
| 7897 | case DW_EH_PE_sdata2: |
| 7898 | readp = ttype_base - max_ar_filter * 2; |
| 7899 | break; |
| 7900 | case DW_EH_PE_udata4: |
| 7901 | case DW_EH_PE_sdata4: |
| 7902 | readp = ttype_base - max_ar_filter * 4; |
| 7903 | break; |
| 7904 | case DW_EH_PE_udata8: |
| 7905 | case DW_EH_PE_sdata8: |
| 7906 | readp = ttype_base - max_ar_filter * 8; |
| 7907 | break; |
| 7908 | default: |
| 7909 | error (1, 0, gettext ("invalid TType encoding")); |
| 7910 | } |
| 7911 | |
| 7912 | do |
| 7913 | { |
| 7914 | uint64_t ttype; |
| 7915 | readp = read_encoded (ttype_encoding, readp, ttype_base, &ttype, |
| 7916 | dbg); |
| 7917 | printf (" [%4u] %#" PRIx64 "\n", max_ar_filter--, ttype); |
| 7918 | } |
| 7919 | while (readp < ttype_base); |
| 7920 | } |
| 7921 | } |
| 7922 | |
| 7923 | /* Print the content of the '.gdb_index' section. |
| 7924 | http://sourceware.org/gdb/current/onlinedocs/gdb/Index-Section-Format.html |
| 7925 | */ |
| 7926 | static void |
| 7927 | print_gdb_index_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr, |
| 7928 | Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg) |
| 7929 | { |
| 7930 | printf (gettext ("\nGDB section [%2zu] '%s' at offset %#" PRIx64 |
| 7931 | " contains %" PRId64 " bytes :\n"), |
| 7932 | elf_ndxscn (scn), section_name (ebl, ehdr, shdr), |
| 7933 | (uint64_t) shdr->sh_offset, (uint64_t) shdr->sh_size); |
| 7934 | |
| 7935 | Elf_Data *data = elf_rawdata (scn, NULL); |
| 7936 | |
| 7937 | if (unlikely (data == NULL)) |
| 7938 | { |
| 7939 | error (0, 0, gettext ("cannot get %s content: %s"), |
| 7940 | ".gdb_index", elf_errmsg (-1)); |
| 7941 | return; |
| 7942 | } |
| 7943 | |
| 7944 | // .gdb_index is always in little endian. |
| 7945 | Dwarf dummy_dbg = { .other_byte_order = MY_ELFDATA != ELFDATA2LSB }; |
| 7946 | dbg = &dummy_dbg; |
| 7947 | |
| 7948 | const unsigned char *readp = data->d_buf; |
| 7949 | const unsigned char *const dataend = readp + data->d_size; |
| 7950 | |
| 7951 | if (unlikely (readp + 4 > dataend)) |
| 7952 | { |
| 7953 | invalid_data: |
| 7954 | error (0, 0, gettext ("invalid data")); |
| 7955 | return; |
| 7956 | } |
| 7957 | |
| 7958 | int32_t vers = read_4ubyte_unaligned (dbg, readp); |
| 7959 | printf (gettext (" Version: %" PRId32 "\n"), vers); |
| 7960 | |
| 7961 | // The only difference between version 4 and version 5 is the |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 7962 | // hash used for generating the table. Version 6 contains symbols |
| 7963 | // for inlined functions, older versions didn't. Version 7 adds |
| 7964 | // symbol kinds. Version 8 just indicates that it correctly includes |
| 7965 | // TUs for symbols. |
| 7966 | if (vers < 4 || vers > 8) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 7967 | { |
| 7968 | printf (gettext (" unknown version, cannot parse section\n")); |
| 7969 | return; |
| 7970 | } |
| 7971 | |
| 7972 | readp += 4; |
| 7973 | if (unlikely (readp + 4 > dataend)) |
| 7974 | goto invalid_data; |
| 7975 | |
| 7976 | uint32_t cu_off = read_4ubyte_unaligned (dbg, readp); |
| 7977 | printf (gettext (" CU offset: %#" PRIx32 "\n"), cu_off); |
| 7978 | |
| 7979 | readp += 4; |
| 7980 | if (unlikely (readp + 4 > dataend)) |
| 7981 | goto invalid_data; |
| 7982 | |
| 7983 | uint32_t tu_off = read_4ubyte_unaligned (dbg, readp); |
| 7984 | printf (gettext (" TU offset: %#" PRIx32 "\n"), tu_off); |
| 7985 | |
| 7986 | readp += 4; |
| 7987 | if (unlikely (readp + 4 > dataend)) |
| 7988 | goto invalid_data; |
| 7989 | |
| 7990 | uint32_t addr_off = read_4ubyte_unaligned (dbg, readp); |
| 7991 | printf (gettext (" address offset: %#" PRIx32 "\n"), addr_off); |
| 7992 | |
| 7993 | readp += 4; |
| 7994 | if (unlikely (readp + 4 > dataend)) |
| 7995 | goto invalid_data; |
| 7996 | |
| 7997 | uint32_t sym_off = read_4ubyte_unaligned (dbg, readp); |
| 7998 | printf (gettext (" symbol offset: %#" PRIx32 "\n"), sym_off); |
| 7999 | |
| 8000 | readp += 4; |
| 8001 | if (unlikely (readp + 4 > dataend)) |
| 8002 | goto invalid_data; |
| 8003 | |
| 8004 | uint32_t const_off = read_4ubyte_unaligned (dbg, readp); |
| 8005 | printf (gettext (" constant offset: %#" PRIx32 "\n"), const_off); |
| 8006 | |
| 8007 | readp = data->d_buf + cu_off; |
| 8008 | |
| 8009 | const unsigned char *nextp = data->d_buf + tu_off; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8010 | size_t cu_nr = (nextp - readp) / 16; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8011 | |
| 8012 | printf (gettext ("\n CU list at offset %#" PRIx32 |
| 8013 | " contains %zu entries:\n"), |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8014 | cu_off, cu_nr); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8015 | |
| 8016 | size_t n = 0; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8017 | while (readp + 16 <= dataend && n < cu_nr) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8018 | { |
| 8019 | uint64_t off = read_8ubyte_unaligned (dbg, readp); |
| 8020 | readp += 8; |
| 8021 | |
| 8022 | uint64_t len = read_8ubyte_unaligned (dbg, readp); |
| 8023 | readp += 8; |
| 8024 | |
| 8025 | printf (" [%4zu] start: %0#8" PRIx64 |
| 8026 | ", length: %5" PRIu64 "\n", n, off, len); |
| 8027 | n++; |
| 8028 | } |
| 8029 | |
| 8030 | readp = data->d_buf + tu_off; |
| 8031 | nextp = data->d_buf + addr_off; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8032 | size_t tu_nr = (nextp - readp) / 24; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8033 | |
| 8034 | printf (gettext ("\n TU list at offset %#" PRIx32 |
| 8035 | " contains %zu entries:\n"), |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8036 | tu_off, tu_nr); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8037 | |
| 8038 | n = 0; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8039 | while (readp + 24 <= dataend && n < tu_nr) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8040 | { |
| 8041 | uint64_t off = read_8ubyte_unaligned (dbg, readp); |
| 8042 | readp += 8; |
| 8043 | |
| 8044 | uint64_t type = read_8ubyte_unaligned (dbg, readp); |
| 8045 | readp += 8; |
| 8046 | |
| 8047 | uint64_t sig = read_8ubyte_unaligned (dbg, readp); |
| 8048 | readp += 8; |
| 8049 | |
| 8050 | printf (" [%4zu] CU offset: %5" PRId64 |
| 8051 | ", type offset: %5" PRId64 |
| 8052 | ", signature: %0#8" PRIx64 "\n", n, off, type, sig); |
| 8053 | n++; |
| 8054 | } |
| 8055 | |
| 8056 | readp = data->d_buf + addr_off; |
| 8057 | nextp = data->d_buf + sym_off; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8058 | size_t addr_nr = (nextp - readp) / 20; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8059 | |
| 8060 | printf (gettext ("\n Address list at offset %#" PRIx32 |
| 8061 | " contains %zu entries:\n"), |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8062 | addr_off, addr_nr); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8063 | |
| 8064 | n = 0; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8065 | while (readp + 20 <= dataend && n < addr_nr) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8066 | { |
| 8067 | uint64_t low = read_8ubyte_unaligned (dbg, readp); |
| 8068 | readp += 8; |
| 8069 | |
| 8070 | uint64_t high = read_8ubyte_unaligned (dbg, readp); |
| 8071 | readp += 8; |
| 8072 | |
| 8073 | uint32_t idx = read_4ubyte_unaligned (dbg, readp); |
| 8074 | readp += 4; |
| 8075 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8076 | char *l = format_dwarf_addr (dwflmod, 8, low, low); |
| 8077 | char *h = format_dwarf_addr (dwflmod, 8, high - 1, high); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8078 | printf (" [%4zu] %s..%s, CU index: %5" PRId32 "\n", |
| 8079 | n, l, h, idx); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8080 | free (l); |
| 8081 | free (h); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8082 | n++; |
| 8083 | } |
| 8084 | |
| 8085 | readp = data->d_buf + sym_off; |
| 8086 | nextp = data->d_buf + const_off; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8087 | size_t sym_nr = (nextp - readp) / 8; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8088 | |
| 8089 | printf (gettext ("\n Symbol table at offset %#" PRIx32 |
| 8090 | " contains %zu slots:\n"), |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8091 | addr_off, sym_nr); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8092 | |
| 8093 | n = 0; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8094 | while (readp + 8 <= dataend && n < sym_nr) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8095 | { |
| 8096 | uint32_t name = read_4ubyte_unaligned (dbg, readp); |
| 8097 | readp += 4; |
| 8098 | |
| 8099 | uint32_t vector = read_4ubyte_unaligned (dbg, readp); |
| 8100 | readp += 4; |
| 8101 | |
| 8102 | if (name != 0 || vector != 0) |
| 8103 | { |
| 8104 | const unsigned char *sym = data->d_buf + const_off + name; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8105 | if (unlikely (sym > dataend |
| 8106 | || memchr (sym, '\0', dataend - sym) == NULL)) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8107 | goto invalid_data; |
| 8108 | |
| 8109 | printf (" [%4zu] symbol: %s, CUs: ", n, sym); |
| 8110 | |
| 8111 | const unsigned char *readcus = data->d_buf + const_off + vector; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8112 | if (unlikely (readcus + 4 > dataend)) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8113 | goto invalid_data; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8114 | uint32_t cus = read_4ubyte_unaligned (dbg, readcus); |
| 8115 | while (cus--) |
| 8116 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8117 | uint32_t cu_kind, cu, kind; |
| 8118 | bool is_static; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8119 | readcus += 4; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8120 | if (unlikely (readcus + 4 > dataend)) |
| 8121 | goto invalid_data; |
| 8122 | cu_kind = read_4ubyte_unaligned (dbg, readcus); |
| 8123 | cu = cu_kind & ((1 << 24) - 1); |
| 8124 | kind = (cu_kind >> 28) & 7; |
| 8125 | is_static = cu_kind & (1U << 31); |
| 8126 | if (cu > cu_nr - 1) |
| 8127 | printf ("%" PRId32 "T", cu - (uint32_t) cu_nr); |
| 8128 | else |
| 8129 | printf ("%" PRId32, cu); |
| 8130 | if (kind != 0) |
| 8131 | { |
| 8132 | printf (" ("); |
| 8133 | switch (kind) |
| 8134 | { |
| 8135 | case 1: |
| 8136 | printf ("type"); |
| 8137 | break; |
| 8138 | case 2: |
| 8139 | printf ("var"); |
| 8140 | break; |
| 8141 | case 3: |
| 8142 | printf ("func"); |
| 8143 | break; |
| 8144 | case 4: |
| 8145 | printf ("other"); |
| 8146 | break; |
| 8147 | default: |
| 8148 | printf ("unknown-0x%" PRIx32, kind); |
| 8149 | break; |
| 8150 | } |
| 8151 | printf (":%c)", (is_static ? 'S' : 'G')); |
| 8152 | } |
| 8153 | if (cus > 0) |
| 8154 | printf (", "); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8155 | } |
| 8156 | printf ("\n"); |
| 8157 | } |
| 8158 | n++; |
| 8159 | } |
| 8160 | } |
| 8161 | |
| 8162 | static void |
| 8163 | print_debug (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr) |
| 8164 | { |
| 8165 | /* Before we start the real work get a debug context descriptor. */ |
| 8166 | Dwarf_Addr dwbias; |
| 8167 | Dwarf *dbg = dwfl_module_getdwarf (dwflmod, &dwbias); |
| 8168 | Dwarf dummy_dbg = |
| 8169 | { |
| 8170 | .elf = ebl->elf, |
| 8171 | .other_byte_order = MY_ELFDATA != ehdr->e_ident[EI_DATA] |
| 8172 | }; |
| 8173 | if (dbg == NULL) |
| 8174 | { |
| 8175 | if ((print_debug_sections & ~section_exception) != 0) |
| 8176 | error (0, 0, gettext ("cannot get debug context descriptor: %s"), |
| 8177 | dwfl_errmsg (-1)); |
| 8178 | if ((print_debug_sections & section_exception) == 0) |
| 8179 | return; |
| 8180 | dbg = &dummy_dbg; |
| 8181 | } |
| 8182 | |
| 8183 | /* Get the section header string table index. */ |
| 8184 | size_t shstrndx; |
| 8185 | if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0)) |
| 8186 | error (EXIT_FAILURE, 0, |
| 8187 | gettext ("cannot get section header string table index")); |
| 8188 | |
| 8189 | /* Look through all the sections for the debugging sections to print. */ |
| 8190 | Elf_Scn *scn = NULL; |
| 8191 | while ((scn = elf_nextscn (ebl->elf, scn)) != NULL) |
| 8192 | { |
| 8193 | GElf_Shdr shdr_mem; |
| 8194 | GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); |
| 8195 | |
| 8196 | if (shdr != NULL && shdr->sh_type == SHT_PROGBITS) |
| 8197 | { |
| 8198 | static const struct |
| 8199 | { |
| 8200 | const char *name; |
| 8201 | enum section_e bitmask; |
| 8202 | void (*fp) (Dwfl_Module *, Ebl *, |
| 8203 | GElf_Ehdr *, Elf_Scn *, GElf_Shdr *, Dwarf *); |
| 8204 | } debug_sections[] = |
| 8205 | { |
| 8206 | #define NEW_SECTION(name) \ |
| 8207 | { ".debug_" #name, section_##name, print_debug_##name##_section } |
| 8208 | NEW_SECTION (abbrev), |
| 8209 | NEW_SECTION (aranges), |
| 8210 | NEW_SECTION (frame), |
| 8211 | NEW_SECTION (info), |
| 8212 | NEW_SECTION (types), |
| 8213 | NEW_SECTION (line), |
| 8214 | NEW_SECTION (loc), |
| 8215 | NEW_SECTION (pubnames), |
| 8216 | NEW_SECTION (str), |
| 8217 | NEW_SECTION (macinfo), |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8218 | NEW_SECTION (macro), |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8219 | NEW_SECTION (ranges), |
| 8220 | { ".eh_frame", section_frame | section_exception, |
| 8221 | print_debug_frame_section }, |
| 8222 | { ".eh_frame_hdr", section_frame | section_exception, |
| 8223 | print_debug_frame_hdr_section }, |
| 8224 | { ".gcc_except_table", section_frame | section_exception, |
| 8225 | print_debug_exception_table }, |
| 8226 | { ".gdb_index", section_gdb_index, print_gdb_index_section } |
| 8227 | }; |
| 8228 | const int ndebug_sections = (sizeof (debug_sections) |
| 8229 | / sizeof (debug_sections[0])); |
| 8230 | const char *name = elf_strptr (ebl->elf, shstrndx, |
| 8231 | shdr->sh_name); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8232 | if (name == NULL) |
| 8233 | continue; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8234 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8235 | int n; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8236 | for (n = 0; n < ndebug_sections; ++n) |
| 8237 | if (strcmp (name, debug_sections[n].name) == 0 |
| 8238 | #if USE_ZLIB |
| 8239 | || (name[0] == '.' && name[1] == 'z' |
| 8240 | && debug_sections[n].name[1] == 'd' |
| 8241 | && strcmp (&name[2], &debug_sections[n].name[1]) == 0) |
| 8242 | #endif |
| 8243 | ) |
| 8244 | { |
| 8245 | if ((print_debug_sections | implicit_debug_sections) |
| 8246 | & debug_sections[n].bitmask) |
| 8247 | debug_sections[n].fp (dwflmod, ebl, ehdr, scn, shdr, dbg); |
| 8248 | break; |
| 8249 | } |
| 8250 | } |
| 8251 | } |
| 8252 | |
| 8253 | reset_listptr (&known_loclistptr); |
| 8254 | reset_listptr (&known_rangelistptr); |
| 8255 | } |
| 8256 | |
| 8257 | |
| 8258 | #define ITEM_INDENT 4 |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8259 | #define WRAP_COLUMN 75 |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8260 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8261 | /* Print "NAME: FORMAT", wrapping when output text would make the line |
| 8262 | exceed WRAP_COLUMN. Unpadded numbers look better for the core items |
| 8263 | but this function is also used for registers which should be printed |
| 8264 | aligned. Fortunately registers output uses fixed fields width (such |
| 8265 | as %11d) for the alignment. |
| 8266 | |
| 8267 | Line breaks should not depend on the particular values although that |
| 8268 | may happen in some cases of the core items. */ |
| 8269 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8270 | static unsigned int |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8271 | __attribute__ ((format (printf, 6, 7))) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8272 | print_core_item (unsigned int colno, char sep, unsigned int wrap, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8273 | size_t name_width, const char *name, const char *format, ...) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8274 | { |
| 8275 | size_t len = strlen (name); |
| 8276 | if (name_width < len) |
| 8277 | name_width = len; |
| 8278 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8279 | char *out; |
| 8280 | va_list ap; |
| 8281 | va_start (ap, format); |
| 8282 | int out_len = vasprintf (&out, format, ap); |
| 8283 | va_end (ap); |
| 8284 | if (out_len == -1) |
| 8285 | error (EXIT_FAILURE, 0, _("memory exhausted")); |
| 8286 | |
| 8287 | size_t n = name_width + sizeof ": " - 1 + out_len; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8288 | |
| 8289 | if (colno == 0) |
| 8290 | { |
| 8291 | printf ("%*s", ITEM_INDENT, ""); |
| 8292 | colno = ITEM_INDENT + n; |
| 8293 | } |
| 8294 | else if (colno + 2 + n < wrap) |
| 8295 | { |
| 8296 | printf ("%c ", sep); |
| 8297 | colno += 2 + n; |
| 8298 | } |
| 8299 | else |
| 8300 | { |
| 8301 | printf ("\n%*s", ITEM_INDENT, ""); |
| 8302 | colno = ITEM_INDENT + n; |
| 8303 | } |
| 8304 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8305 | printf ("%s: %*s%s", name, (int) (name_width - len), "", out); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8306 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8307 | free (out); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8308 | |
| 8309 | return colno; |
| 8310 | } |
| 8311 | |
| 8312 | static const void * |
| 8313 | convert (Elf *core, Elf_Type type, uint_fast16_t count, |
| 8314 | void *value, const void *data, size_t size) |
| 8315 | { |
| 8316 | Elf_Data valuedata = |
| 8317 | { |
| 8318 | .d_type = type, |
| 8319 | .d_buf = value, |
| 8320 | .d_size = size ?: gelf_fsize (core, type, count, EV_CURRENT), |
| 8321 | .d_version = EV_CURRENT, |
| 8322 | }; |
| 8323 | Elf_Data indata = |
| 8324 | { |
| 8325 | .d_type = type, |
| 8326 | .d_buf = (void *) data, |
| 8327 | .d_size = valuedata.d_size, |
| 8328 | .d_version = EV_CURRENT, |
| 8329 | }; |
| 8330 | |
| 8331 | Elf_Data *d = (gelf_getclass (core) == ELFCLASS32 |
| 8332 | ? elf32_xlatetom : elf64_xlatetom) |
| 8333 | (&valuedata, &indata, elf_getident (core, NULL)[EI_DATA]); |
| 8334 | if (d == NULL) |
| 8335 | error (EXIT_FAILURE, 0, |
| 8336 | gettext ("cannot convert core note data: %s"), elf_errmsg (-1)); |
| 8337 | |
| 8338 | return data + indata.d_size; |
| 8339 | } |
| 8340 | |
| 8341 | typedef uint8_t GElf_Byte; |
| 8342 | |
| 8343 | static unsigned int |
| 8344 | handle_core_item (Elf *core, const Ebl_Core_Item *item, const void *desc, |
| 8345 | unsigned int colno, size_t *repeated_size) |
| 8346 | { |
| 8347 | uint_fast16_t count = item->count ?: 1; |
| 8348 | |
| 8349 | #define TYPES \ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8350 | DO_TYPE (BYTE, Byte, "0x%.2" PRIx8, "%" PRId8); \ |
| 8351 | DO_TYPE (HALF, Half, "0x%.4" PRIx16, "%" PRId16); \ |
| 8352 | DO_TYPE (WORD, Word, "0x%.8" PRIx32, "%" PRId32); \ |
| 8353 | DO_TYPE (SWORD, Sword, "%" PRId32, "%" PRId32); \ |
| 8354 | DO_TYPE (XWORD, Xword, "0x%.16" PRIx64, "%" PRId64); \ |
| 8355 | DO_TYPE (SXWORD, Sxword, "%" PRId64, "%" PRId64) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8356 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8357 | #define DO_TYPE(NAME, Name, hex, dec) GElf_##Name Name[count] |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8358 | union { TYPES; } value; |
| 8359 | #undef DO_TYPE |
| 8360 | |
| 8361 | void *data = &value; |
| 8362 | size_t size = gelf_fsize (core, item->type, count, EV_CURRENT); |
| 8363 | size_t convsize = size; |
| 8364 | if (repeated_size != NULL) |
| 8365 | { |
| 8366 | if (*repeated_size > size && (item->format == 'b' || item->format == 'B')) |
| 8367 | { |
| 8368 | data = alloca (*repeated_size); |
| 8369 | count *= *repeated_size / size; |
| 8370 | convsize = count * size; |
| 8371 | *repeated_size -= convsize; |
| 8372 | } |
| 8373 | else if (item->count != 0 || item->format != '\n') |
| 8374 | *repeated_size -= size; |
| 8375 | } |
| 8376 | |
| 8377 | convert (core, item->type, count, data, desc + item->offset, convsize); |
| 8378 | |
| 8379 | Elf_Type type = item->type; |
| 8380 | if (type == ELF_T_ADDR) |
| 8381 | type = gelf_getclass (core) == ELFCLASS32 ? ELF_T_WORD : ELF_T_XWORD; |
| 8382 | |
| 8383 | switch (item->format) |
| 8384 | { |
| 8385 | case 'd': |
| 8386 | assert (count == 1); |
| 8387 | switch (type) |
| 8388 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8389 | #define DO_TYPE(NAME, Name, hex, dec) \ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8390 | case ELF_T_##NAME: \ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8391 | colno = print_core_item (colno, ',', WRAP_COLUMN, \ |
| 8392 | 0, item->name, dec, value.Name[0]); \ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8393 | break |
| 8394 | TYPES; |
| 8395 | #undef DO_TYPE |
| 8396 | default: |
| 8397 | abort (); |
| 8398 | } |
| 8399 | break; |
| 8400 | |
| 8401 | case 'x': |
| 8402 | assert (count == 1); |
| 8403 | switch (type) |
| 8404 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8405 | #define DO_TYPE(NAME, Name, hex, dec) \ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8406 | case ELF_T_##NAME: \ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8407 | colno = print_core_item (colno, ',', WRAP_COLUMN, \ |
| 8408 | 0, item->name, hex, value.Name[0]); \ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8409 | break |
| 8410 | TYPES; |
| 8411 | #undef DO_TYPE |
| 8412 | default: |
| 8413 | abort (); |
| 8414 | } |
| 8415 | break; |
| 8416 | |
| 8417 | case 'b': |
| 8418 | case 'B': |
| 8419 | assert (size % sizeof (unsigned int) == 0); |
| 8420 | unsigned int nbits = count * size * 8; |
| 8421 | unsigned int pop = 0; |
| 8422 | for (const unsigned int *i = data; (void *) i < data + count * size; ++i) |
| 8423 | pop += __builtin_popcount (*i); |
| 8424 | bool negate = pop > nbits / 2; |
| 8425 | const unsigned int bias = item->format == 'b'; |
| 8426 | |
| 8427 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8428 | char printed[(negate ? nbits - pop : pop) * 16 + 1]; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8429 | char *p = printed; |
| 8430 | *p = '\0'; |
| 8431 | |
| 8432 | if (BYTE_ORDER != LITTLE_ENDIAN && size > sizeof (unsigned int)) |
| 8433 | { |
| 8434 | assert (size == sizeof (unsigned int) * 2); |
| 8435 | for (unsigned int *i = data; |
| 8436 | (void *) i < data + count * size; i += 2) |
| 8437 | { |
| 8438 | unsigned int w = i[1]; |
| 8439 | i[1] = i[0]; |
| 8440 | i[0] = w; |
| 8441 | } |
| 8442 | } |
| 8443 | |
| 8444 | unsigned int lastbit = 0; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8445 | unsigned int run = 0; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8446 | for (const unsigned int *i = data; |
| 8447 | (void *) i < data + count * size; ++i) |
| 8448 | { |
| 8449 | unsigned int bit = ((void *) i - data) * 8; |
| 8450 | unsigned int w = negate ? ~*i : *i; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8451 | while (w != 0) |
| 8452 | { |
| 8453 | int n = ffs (w); |
| 8454 | w >>= n; |
| 8455 | bit += n; |
| 8456 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8457 | if (lastbit != 0 && lastbit + 1 == bit) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8458 | ++run; |
| 8459 | else |
| 8460 | { |
| 8461 | if (lastbit == 0) |
| 8462 | p += sprintf (p, "%u", bit - bias); |
| 8463 | else if (run == 0) |
| 8464 | p += sprintf (p, ",%u", bit - bias); |
| 8465 | else |
| 8466 | p += sprintf (p, "-%u,%u", lastbit - bias, bit - bias); |
| 8467 | run = 0; |
| 8468 | } |
| 8469 | |
| 8470 | lastbit = bit; |
| 8471 | } |
| 8472 | } |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8473 | if (lastbit > 0 && run > 0 && lastbit + 1 != nbits) |
| 8474 | p += sprintf (p, "-%u", lastbit - bias); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8475 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8476 | colno = print_core_item (colno, ',', WRAP_COLUMN, 0, item->name, |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8477 | negate ? "~<%s>" : "<%s>", printed); |
| 8478 | } |
| 8479 | break; |
| 8480 | |
| 8481 | case 'T': |
| 8482 | case (char) ('T'|0x80): |
| 8483 | assert (count == 2); |
| 8484 | Dwarf_Word sec; |
| 8485 | Dwarf_Word usec; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8486 | switch (type) |
| 8487 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8488 | #define DO_TYPE(NAME, Name, hex, dec) \ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8489 | case ELF_T_##NAME: \ |
| 8490 | sec = value.Name[0]; \ |
| 8491 | usec = value.Name[1]; \ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8492 | break |
| 8493 | TYPES; |
| 8494 | #undef DO_TYPE |
| 8495 | default: |
| 8496 | abort (); |
| 8497 | } |
| 8498 | if (unlikely (item->format == (char) ('T'|0x80))) |
| 8499 | { |
| 8500 | /* This is a hack for an ill-considered 64-bit ABI where |
| 8501 | tv_usec is actually a 32-bit field with 32 bits of padding |
| 8502 | rounding out struct timeval. We've already converted it as |
| 8503 | a 64-bit field. For little-endian, this just means the |
| 8504 | high half is the padding; it's presumably zero, but should |
| 8505 | be ignored anyway. For big-endian, it means the 32-bit |
| 8506 | field went into the high half of USEC. */ |
| 8507 | GElf_Ehdr ehdr_mem; |
| 8508 | GElf_Ehdr *ehdr = gelf_getehdr (core, &ehdr_mem); |
| 8509 | if (likely (ehdr->e_ident[EI_DATA] == ELFDATA2MSB)) |
| 8510 | usec >>= 32; |
| 8511 | else |
| 8512 | usec &= UINT32_MAX; |
| 8513 | } |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8514 | colno = print_core_item (colno, ',', WRAP_COLUMN, 0, item->name, |
| 8515 | "%" PRIu64 ".%.6" PRIu64, sec, usec); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8516 | break; |
| 8517 | |
| 8518 | case 'c': |
| 8519 | assert (count == 1); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8520 | colno = print_core_item (colno, ',', WRAP_COLUMN, 0, item->name, |
| 8521 | "%c", value.Byte[0]); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8522 | break; |
| 8523 | |
| 8524 | case 's': |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8525 | colno = print_core_item (colno, ',', WRAP_COLUMN, 0, item->name, |
| 8526 | "%.*s", (int) count, value.Byte); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8527 | break; |
| 8528 | |
| 8529 | case '\n': |
| 8530 | /* This is a list of strings separated by '\n'. */ |
| 8531 | assert (item->count == 0); |
| 8532 | assert (repeated_size != NULL); |
| 8533 | assert (item->name == NULL); |
| 8534 | if (unlikely (item->offset >= *repeated_size)) |
| 8535 | break; |
| 8536 | |
| 8537 | const char *s = desc + item->offset; |
| 8538 | size = *repeated_size - item->offset; |
| 8539 | *repeated_size = 0; |
| 8540 | while (size > 0) |
| 8541 | { |
| 8542 | const char *eol = memchr (s, '\n', size); |
| 8543 | int len = size; |
| 8544 | if (eol != NULL) |
| 8545 | len = eol - s; |
| 8546 | printf ("%*s%.*s\n", ITEM_INDENT, "", len, s); |
| 8547 | if (eol == NULL) |
| 8548 | break; |
| 8549 | size -= eol + 1 - s; |
| 8550 | s = eol + 1; |
| 8551 | } |
| 8552 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8553 | colno = WRAP_COLUMN; |
| 8554 | break; |
| 8555 | |
| 8556 | case 'h': |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8557 | break; |
| 8558 | |
| 8559 | default: |
| 8560 | error (0, 0, "XXX not handling format '%c' for %s", |
| 8561 | item->format, item->name); |
| 8562 | break; |
| 8563 | } |
| 8564 | |
| 8565 | #undef TYPES |
| 8566 | |
| 8567 | return colno; |
| 8568 | } |
| 8569 | |
| 8570 | |
| 8571 | /* Sort items by group, and by layout offset within each group. */ |
| 8572 | static int |
| 8573 | compare_core_items (const void *a, const void *b) |
| 8574 | { |
| 8575 | const Ebl_Core_Item *const *p1 = a; |
| 8576 | const Ebl_Core_Item *const *p2 = b; |
| 8577 | const Ebl_Core_Item *item1 = *p1; |
| 8578 | const Ebl_Core_Item *item2 = *p2; |
| 8579 | |
| 8580 | return ((item1->group == item2->group ? 0 |
| 8581 | : strcmp (item1->group, item2->group)) |
| 8582 | ?: (int) item1->offset - (int) item2->offset); |
| 8583 | } |
| 8584 | |
| 8585 | /* Sort item groups by layout offset of the first item in the group. */ |
| 8586 | static int |
| 8587 | compare_core_item_groups (const void *a, const void *b) |
| 8588 | { |
| 8589 | const Ebl_Core_Item *const *const *p1 = a; |
| 8590 | const Ebl_Core_Item *const *const *p2 = b; |
| 8591 | const Ebl_Core_Item *const *group1 = *p1; |
| 8592 | const Ebl_Core_Item *const *group2 = *p2; |
| 8593 | const Ebl_Core_Item *item1 = *group1; |
| 8594 | const Ebl_Core_Item *item2 = *group2; |
| 8595 | |
| 8596 | return (int) item1->offset - (int) item2->offset; |
| 8597 | } |
| 8598 | |
| 8599 | static unsigned int |
| 8600 | handle_core_items (Elf *core, const void *desc, size_t descsz, |
| 8601 | const Ebl_Core_Item *items, size_t nitems) |
| 8602 | { |
| 8603 | if (nitems == 0) |
| 8604 | return 0; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8605 | unsigned int colno = 0; |
| 8606 | |
| 8607 | /* FORMAT '\n' makes sense to be present only as a single item as it |
| 8608 | processes all the data of a note. FORMATs 'b' and 'B' have a special case |
| 8609 | if present as a single item but they can be also processed with other |
| 8610 | items below. */ |
| 8611 | if (nitems == 1 && (items[0].format == '\n' || items[0].format == 'b' |
| 8612 | || items[0].format == 'B')) |
| 8613 | { |
| 8614 | assert (items[0].offset == 0); |
| 8615 | size_t size = descsz; |
| 8616 | colno = handle_core_item (core, items, desc, colno, &size); |
| 8617 | /* If SIZE is not zero here there is some remaining data. But we do not |
| 8618 | know how to process it anyway. */ |
| 8619 | return colno; |
| 8620 | } |
| 8621 | for (size_t i = 0; i < nitems; ++i) |
| 8622 | assert (items[i].format != '\n'); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8623 | |
| 8624 | /* Sort to collect the groups together. */ |
| 8625 | const Ebl_Core_Item *sorted_items[nitems]; |
| 8626 | for (size_t i = 0; i < nitems; ++i) |
| 8627 | sorted_items[i] = &items[i]; |
| 8628 | qsort (sorted_items, nitems, sizeof sorted_items[0], &compare_core_items); |
| 8629 | |
| 8630 | /* Collect the unique groups and sort them. */ |
| 8631 | const Ebl_Core_Item **groups[nitems]; |
| 8632 | groups[0] = &sorted_items[0]; |
| 8633 | size_t ngroups = 1; |
| 8634 | for (size_t i = 1; i < nitems; ++i) |
| 8635 | if (sorted_items[i]->group != sorted_items[i - 1]->group |
| 8636 | && strcmp (sorted_items[i]->group, sorted_items[i - 1]->group)) |
| 8637 | groups[ngroups++] = &sorted_items[i]; |
| 8638 | qsort (groups, ngroups, sizeof groups[0], &compare_core_item_groups); |
| 8639 | |
| 8640 | /* Write out all the groups. */ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8641 | const void *last = desc; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8642 | do |
| 8643 | { |
| 8644 | for (size_t i = 0; i < ngroups; ++i) |
| 8645 | { |
| 8646 | for (const Ebl_Core_Item **item = groups[i]; |
| 8647 | (item < &sorted_items[nitems] |
| 8648 | && ((*item)->group == groups[i][0]->group |
| 8649 | || !strcmp ((*item)->group, groups[i][0]->group))); |
| 8650 | ++item) |
| 8651 | colno = handle_core_item (core, *item, desc, colno, NULL); |
| 8652 | |
| 8653 | /* Force a line break at the end of the group. */ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8654 | colno = WRAP_COLUMN; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8655 | } |
| 8656 | |
| 8657 | if (descsz == 0) |
| 8658 | break; |
| 8659 | |
| 8660 | /* This set of items consumed a certain amount of the note's data. |
| 8661 | If there is more data there, we have another unit of the same size. |
| 8662 | Loop to print that out too. */ |
| 8663 | const Ebl_Core_Item *item = &items[nitems - 1]; |
| 8664 | size_t eltsz = item->offset + gelf_fsize (core, item->type, |
| 8665 | item->count ?: 1, EV_CURRENT); |
| 8666 | |
| 8667 | int reps = -1; |
| 8668 | do |
| 8669 | { |
| 8670 | ++reps; |
| 8671 | desc += eltsz; |
| 8672 | descsz -= eltsz; |
| 8673 | } |
| 8674 | while (descsz >= eltsz && !memcmp (desc, last, eltsz)); |
| 8675 | |
| 8676 | if (reps == 1) |
| 8677 | { |
| 8678 | /* For just one repeat, print it unabridged twice. */ |
| 8679 | desc -= eltsz; |
| 8680 | descsz += eltsz; |
| 8681 | } |
| 8682 | else if (reps > 1) |
| 8683 | printf (gettext ("\n%*s... <repeats %u more times> ..."), |
| 8684 | ITEM_INDENT, "", reps); |
| 8685 | |
| 8686 | last = desc; |
| 8687 | } |
| 8688 | while (descsz > 0); |
| 8689 | |
| 8690 | return colno; |
| 8691 | } |
| 8692 | |
| 8693 | static unsigned int |
| 8694 | handle_bit_registers (const Ebl_Register_Location *regloc, const void *desc, |
| 8695 | unsigned int colno) |
| 8696 | { |
| 8697 | desc += regloc->offset; |
| 8698 | |
| 8699 | abort (); /* XXX */ |
| 8700 | return colno; |
| 8701 | } |
| 8702 | |
| 8703 | |
| 8704 | static unsigned int |
| 8705 | handle_core_register (Ebl *ebl, Elf *core, int maxregname, |
| 8706 | const Ebl_Register_Location *regloc, const void *desc, |
| 8707 | unsigned int colno) |
| 8708 | { |
| 8709 | if (regloc->bits % 8 != 0) |
| 8710 | return handle_bit_registers (regloc, desc, colno); |
| 8711 | |
| 8712 | desc += regloc->offset; |
| 8713 | |
| 8714 | for (int reg = regloc->regno; reg < regloc->regno + regloc->count; ++reg) |
| 8715 | { |
| 8716 | char name[REGNAMESZ]; |
| 8717 | int bits; |
| 8718 | int type; |
| 8719 | register_info (ebl, reg, regloc, name, &bits, &type); |
| 8720 | |
| 8721 | #define TYPES \ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8722 | BITS (8, BYTE, "%4" PRId8, "0x%.2" PRIx8); \ |
| 8723 | BITS (16, HALF, "%6" PRId16, "0x%.4" PRIx16); \ |
| 8724 | BITS (32, WORD, "%11" PRId32, " 0x%.8" PRIx32); \ |
| 8725 | BITS (64, XWORD, "%20" PRId64, " 0x%.16" PRIx64) |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8726 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8727 | #define BITS(bits, xtype, sfmt, ufmt) \ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8728 | uint##bits##_t b##bits; int##bits##_t b##bits##s |
| 8729 | union { TYPES; uint64_t b128[2]; } value; |
| 8730 | #undef BITS |
| 8731 | |
| 8732 | switch (type) |
| 8733 | { |
| 8734 | case DW_ATE_unsigned: |
| 8735 | case DW_ATE_signed: |
| 8736 | case DW_ATE_address: |
| 8737 | switch (bits) |
| 8738 | { |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8739 | #define BITS(bits, xtype, sfmt, ufmt) \ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8740 | case bits: \ |
| 8741 | desc = convert (core, ELF_T_##xtype, 1, &value, desc, 0); \ |
| 8742 | if (type == DW_ATE_signed) \ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8743 | colno = print_core_item (colno, ' ', WRAP_COLUMN, \ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8744 | maxregname, name, \ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8745 | sfmt, value.b##bits##s); \ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8746 | else \ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8747 | colno = print_core_item (colno, ' ', WRAP_COLUMN, \ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8748 | maxregname, name, \ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8749 | ufmt, value.b##bits); \ |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8750 | break |
| 8751 | |
| 8752 | TYPES; |
| 8753 | |
| 8754 | case 128: |
| 8755 | assert (type == DW_ATE_unsigned); |
| 8756 | desc = convert (core, ELF_T_XWORD, 2, &value, desc, 0); |
| 8757 | int be = elf_getident (core, NULL)[EI_DATA] == ELFDATA2MSB; |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8758 | colno = print_core_item (colno, ' ', WRAP_COLUMN, |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8759 | maxregname, name, |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8760 | "0x%.16" PRIx64 "%.16" PRIx64, |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8761 | value.b128[!be], value.b128[be]); |
| 8762 | break; |
| 8763 | |
| 8764 | default: |
| 8765 | abort (); |
| 8766 | #undef BITS |
| 8767 | } |
| 8768 | break; |
| 8769 | |
| 8770 | default: |
| 8771 | /* Print each byte in hex, the whole thing in native byte order. */ |
| 8772 | assert (bits % 8 == 0); |
| 8773 | const uint8_t *bytes = desc; |
| 8774 | desc += bits / 8; |
| 8775 | char hex[bits / 4 + 1]; |
| 8776 | hex[bits / 4] = '\0'; |
| 8777 | int incr = 1; |
| 8778 | if (elf_getident (core, NULL)[EI_DATA] == ELFDATA2LSB) |
| 8779 | { |
| 8780 | bytes += bits / 8 - 1; |
| 8781 | incr = -1; |
| 8782 | } |
| 8783 | size_t idx = 0; |
| 8784 | for (char *h = hex; bits > 0; bits -= 8, idx += incr) |
| 8785 | { |
| 8786 | *h++ = "0123456789abcdef"[bytes[idx] >> 4]; |
| 8787 | *h++ = "0123456789abcdef"[bytes[idx] & 0xf]; |
| 8788 | } |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8789 | colno = print_core_item (colno, ' ', WRAP_COLUMN, |
| 8790 | maxregname, name, "0x%s", hex); |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8791 | break; |
| 8792 | } |
| 8793 | desc += regloc->pad; |
| 8794 | |
| 8795 | #undef TYPES |
| 8796 | } |
| 8797 | |
| 8798 | return colno; |
| 8799 | } |
| 8800 | |
| 8801 | |
| 8802 | struct register_info |
| 8803 | { |
| 8804 | const Ebl_Register_Location *regloc; |
| 8805 | const char *set; |
| 8806 | char name[REGNAMESZ]; |
| 8807 | int regno; |
| 8808 | int bits; |
| 8809 | int type; |
| 8810 | }; |
| 8811 | |
| 8812 | static int |
| 8813 | register_bitpos (const struct register_info *r) |
| 8814 | { |
| 8815 | return (r->regloc->offset * 8 |
| 8816 | + ((r->regno - r->regloc->regno) |
| 8817 | * (r->regloc->bits + r->regloc->pad * 8))); |
| 8818 | } |
| 8819 | |
| 8820 | static int |
| 8821 | compare_sets_by_info (const struct register_info *r1, |
| 8822 | const struct register_info *r2) |
| 8823 | { |
| 8824 | return ((int) r2->bits - (int) r1->bits |
| 8825 | ?: register_bitpos (r1) - register_bitpos (r2)); |
| 8826 | } |
| 8827 | |
| 8828 | /* Sort registers by set, and by size and layout offset within each set. */ |
| 8829 | static int |
| 8830 | compare_registers (const void *a, const void *b) |
| 8831 | { |
| 8832 | const struct register_info *r1 = a; |
| 8833 | const struct register_info *r2 = b; |
| 8834 | |
| 8835 | /* Unused elements sort last. */ |
| 8836 | if (r1->regloc == NULL) |
| 8837 | return r2->regloc == NULL ? 0 : 1; |
| 8838 | if (r2->regloc == NULL) |
| 8839 | return -1; |
| 8840 | |
| 8841 | return ((r1->set == r2->set ? 0 : strcmp (r1->set, r2->set)) |
| 8842 | ?: compare_sets_by_info (r1, r2)); |
| 8843 | } |
| 8844 | |
| 8845 | /* Sort register sets by layout offset of the first register in the set. */ |
| 8846 | static int |
| 8847 | compare_register_sets (const void *a, const void *b) |
| 8848 | { |
| 8849 | const struct register_info *const *p1 = a; |
| 8850 | const struct register_info *const *p2 = b; |
| 8851 | return compare_sets_by_info (*p1, *p2); |
| 8852 | } |
| 8853 | |
| 8854 | static unsigned int |
| 8855 | handle_core_registers (Ebl *ebl, Elf *core, const void *desc, |
| 8856 | const Ebl_Register_Location *reglocs, size_t nregloc) |
| 8857 | { |
| 8858 | if (nregloc == 0) |
| 8859 | return 0; |
| 8860 | |
| 8861 | ssize_t maxnreg = ebl_register_info (ebl, 0, NULL, 0, NULL, NULL, NULL, NULL); |
| 8862 | if (maxnreg <= 0) |
| 8863 | { |
| 8864 | for (size_t i = 0; i < nregloc; ++i) |
| 8865 | if (maxnreg < reglocs[i].regno + reglocs[i].count) |
| 8866 | maxnreg = reglocs[i].regno + reglocs[i].count; |
| 8867 | assert (maxnreg > 0); |
| 8868 | } |
| 8869 | |
| 8870 | struct register_info regs[maxnreg]; |
| 8871 | memset (regs, 0, sizeof regs); |
| 8872 | |
| 8873 | /* Sort to collect the sets together. */ |
| 8874 | int maxreg = 0; |
| 8875 | for (size_t i = 0; i < nregloc; ++i) |
| 8876 | for (int reg = reglocs[i].regno; |
| 8877 | reg < reglocs[i].regno + reglocs[i].count; |
| 8878 | ++reg) |
| 8879 | { |
| 8880 | assert (reg < maxnreg); |
| 8881 | if (reg > maxreg) |
| 8882 | maxreg = reg; |
| 8883 | struct register_info *info = ®s[reg]; |
| 8884 | info->regloc = ®locs[i]; |
| 8885 | info->regno = reg; |
| 8886 | info->set = register_info (ebl, reg, ®locs[i], |
| 8887 | info->name, &info->bits, &info->type); |
| 8888 | } |
| 8889 | qsort (regs, maxreg + 1, sizeof regs[0], &compare_registers); |
| 8890 | |
| 8891 | /* Collect the unique sets and sort them. */ |
| 8892 | inline bool same_set (const struct register_info *a, |
| 8893 | const struct register_info *b) |
| 8894 | { |
| 8895 | return (a < ®s[maxnreg] && a->regloc != NULL |
| 8896 | && b < ®s[maxnreg] && b->regloc != NULL |
| 8897 | && a->bits == b->bits |
| 8898 | && (a->set == b->set || !strcmp (a->set, b->set))); |
| 8899 | } |
| 8900 | struct register_info *sets[maxreg + 1]; |
| 8901 | sets[0] = ®s[0]; |
| 8902 | size_t nsets = 1; |
| 8903 | for (int i = 1; i <= maxreg; ++i) |
| 8904 | if (regs[i].regloc != NULL && !same_set (®s[i], ®s[i - 1])) |
| 8905 | sets[nsets++] = ®s[i]; |
| 8906 | qsort (sets, nsets, sizeof sets[0], &compare_register_sets); |
| 8907 | |
| 8908 | /* Write out all the sets. */ |
| 8909 | unsigned int colno = 0; |
| 8910 | for (size_t i = 0; i < nsets; ++i) |
| 8911 | { |
| 8912 | /* Find the longest name of a register in this set. */ |
| 8913 | size_t maxname = 0; |
| 8914 | const struct register_info *end; |
| 8915 | for (end = sets[i]; same_set (sets[i], end); ++end) |
| 8916 | { |
| 8917 | size_t len = strlen (end->name); |
| 8918 | if (len > maxname) |
| 8919 | maxname = len; |
| 8920 | } |
| 8921 | |
| 8922 | for (const struct register_info *reg = sets[i]; |
| 8923 | reg < end; |
| 8924 | reg += reg->regloc->count ?: 1) |
| 8925 | colno = handle_core_register (ebl, core, maxname, |
| 8926 | reg->regloc, desc, colno); |
| 8927 | |
| 8928 | /* Force a line break at the end of the group. */ |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 8929 | colno = WRAP_COLUMN; |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 8930 | } |
| 8931 | |
| 8932 | return colno; |
| 8933 | } |
| 8934 | |
| 8935 | static void |
| 8936 | handle_auxv_note (Ebl *ebl, Elf *core, GElf_Word descsz, GElf_Off desc_pos) |
| 8937 | { |
| 8938 | Elf_Data *data = elf_getdata_rawchunk (core, desc_pos, descsz, ELF_T_AUXV); |
| 8939 | if (data == NULL) |
| 8940 | elf_error: |
| 8941 | error (EXIT_FAILURE, 0, |
| 8942 | gettext ("cannot convert core note data: %s"), elf_errmsg (-1)); |
| 8943 | |
| 8944 | const size_t nauxv = descsz / gelf_fsize (core, ELF_T_AUXV, 1, EV_CURRENT); |
| 8945 | for (size_t i = 0; i < nauxv; ++i) |
| 8946 | { |
| 8947 | GElf_auxv_t av_mem; |
| 8948 | GElf_auxv_t *av = gelf_getauxv (data, i, &av_mem); |
| 8949 | if (av == NULL) |
| 8950 | goto elf_error; |
| 8951 | |
| 8952 | const char *name; |
| 8953 | const char *fmt; |
| 8954 | if (ebl_auxv_info (ebl, av->a_type, &name, &fmt) == 0) |
| 8955 | { |
| 8956 | /* Unknown type. */ |
| 8957 | if (av->a_un.a_val == 0) |
| 8958 | printf (" %" PRIu64 "\n", av->a_type); |
| 8959 | else |
| 8960 | printf (" %" PRIu64 ": %#" PRIx64 "\n", |
| 8961 | av->a_type, av->a_un.a_val); |
| 8962 | } |
| 8963 | else |
| 8964 | switch (fmt[0]) |
| 8965 | { |
| 8966 | case '\0': /* Normally zero. */ |
| 8967 | if (av->a_un.a_val == 0) |
| 8968 | { |
| 8969 | printf (" %s\n", name); |
| 8970 | break; |
| 8971 | } |
| 8972 | /* Fall through */ |
| 8973 | case 'x': /* hex */ |
| 8974 | case 'p': /* address */ |
| 8975 | case 's': /* address of string */ |
| 8976 | printf (" %s: %#" PRIx64 "\n", name, av->a_un.a_val); |
| 8977 | break; |
| 8978 | case 'u': |
| 8979 | printf (" %s: %" PRIu64 "\n", name, av->a_un.a_val); |
| 8980 | break; |
| 8981 | case 'd': |
| 8982 | printf (" %s: %" PRId64 "\n", name, av->a_un.a_val); |
| 8983 | break; |
| 8984 | |
| 8985 | case 'b': |
| 8986 | printf (" %s: %#" PRIx64 " ", name, av->a_un.a_val); |
| 8987 | GElf_Xword bit = 1; |
| 8988 | const char *pfx = "<"; |
| 8989 | for (const char *p = fmt + 1; *p != 0; p = strchr (p, '\0') + 1) |
| 8990 | { |
| 8991 | if (av->a_un.a_val & bit) |
| 8992 | { |
| 8993 | printf ("%s%s", pfx, p); |
| 8994 | pfx = " "; |
| 8995 | } |
| 8996 | bit <<= 1; |
| 8997 | } |
| 8998 | printf (">\n"); |
| 8999 | break; |
| 9000 | |
| 9001 | default: |
| 9002 | abort (); |
| 9003 | } |
| 9004 | } |
| 9005 | } |
| 9006 | |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 9007 | static bool |
| 9008 | buf_has_data (unsigned char const *ptr, unsigned char const *end, size_t sz) |
| 9009 | { |
| 9010 | return ptr < end && (size_t) (end - ptr) >= sz; |
| 9011 | } |
| 9012 | |
| 9013 | static bool |
| 9014 | buf_read_int (Elf *core, unsigned char const **ptrp, unsigned char const *end, |
| 9015 | int *retp) |
| 9016 | { |
| 9017 | if (! buf_has_data (*ptrp, end, 4)) |
| 9018 | return false; |
| 9019 | |
| 9020 | *ptrp = convert (core, ELF_T_WORD, 1, retp, *ptrp, 4); |
| 9021 | return true; |
| 9022 | } |
| 9023 | |
| 9024 | static bool |
| 9025 | buf_read_ulong (Elf *core, unsigned char const **ptrp, unsigned char const *end, |
| 9026 | uint64_t *retp) |
| 9027 | { |
| 9028 | size_t sz = gelf_fsize (core, ELF_T_ADDR, 1, EV_CURRENT); |
| 9029 | if (! buf_has_data (*ptrp, end, sz)) |
| 9030 | return false; |
| 9031 | |
| 9032 | union |
| 9033 | { |
| 9034 | uint64_t u64; |
| 9035 | uint32_t u32; |
| 9036 | } u; |
| 9037 | |
| 9038 | *ptrp = convert (core, ELF_T_ADDR, 1, &u, *ptrp, sz); |
| 9039 | |
| 9040 | if (sz == 4) |
| 9041 | *retp = u.u32; |
| 9042 | else |
| 9043 | *retp = u.u64; |
| 9044 | return true; |
| 9045 | } |
| 9046 | |
| 9047 | static void |
| 9048 | handle_siginfo_note (Elf *core, GElf_Word descsz, GElf_Off desc_pos) |
| 9049 | { |
| 9050 | Elf_Data *data = elf_getdata_rawchunk (core, desc_pos, descsz, ELF_T_BYTE); |
| 9051 | if (data == NULL) |
| 9052 | error (EXIT_FAILURE, 0, |
| 9053 | gettext ("cannot convert core note data: %s"), elf_errmsg (-1)); |
| 9054 | |
| 9055 | unsigned char const *ptr = data->d_buf; |
| 9056 | unsigned char const *const end = data->d_buf + data->d_size; |
| 9057 | |
| 9058 | /* Siginfo head is three ints: signal number, error number, origin |
| 9059 | code. */ |
| 9060 | int si_signo, si_errno, si_code; |
| 9061 | if (! buf_read_int (core, &ptr, end, &si_signo) |
| 9062 | || ! buf_read_int (core, &ptr, end, &si_errno) |
| 9063 | || ! buf_read_int (core, &ptr, end, &si_code)) |
| 9064 | { |
| 9065 | fail: |
| 9066 | printf (" Not enough data in NT_SIGINFO note.\n"); |
| 9067 | return; |
| 9068 | } |
| 9069 | |
| 9070 | /* Next is a pointer-aligned union of structures. On 64-bit |
| 9071 | machines, that implies a word of padding. */ |
| 9072 | if (gelf_getclass (core) == ELFCLASS64) |
| 9073 | ptr += 4; |
| 9074 | |
| 9075 | printf (" si_signo: %d, si_errno: %d, si_code: %d\n", |
| 9076 | si_signo, si_errno, si_code); |
| 9077 | |
| 9078 | if (si_code > 0) |
| 9079 | switch (si_signo) |
| 9080 | { |
| 9081 | case SIGILL: |
| 9082 | case SIGFPE: |
| 9083 | case SIGSEGV: |
| 9084 | case SIGBUS: |
| 9085 | { |
| 9086 | uint64_t addr; |
| 9087 | if (! buf_read_ulong (core, &ptr, end, &addr)) |
| 9088 | goto fail; |
| 9089 | printf (" fault address: %#" PRIx64 "\n", addr); |
| 9090 | break; |
| 9091 | } |
| 9092 | default: |
| 9093 | ; |
| 9094 | } |
| 9095 | else if (si_code == SI_USER) |
| 9096 | { |
| 9097 | int pid, uid; |
| 9098 | if (! buf_read_int (core, &ptr, end, &pid) |
| 9099 | || ! buf_read_int (core, &ptr, end, &uid)) |
| 9100 | goto fail; |
| 9101 | printf (" sender PID: %d, sender UID: %d\n", pid, uid); |
| 9102 | } |
| 9103 | } |
| 9104 | |
| 9105 | static void |
| 9106 | handle_file_note (Elf *core, GElf_Word descsz, GElf_Off desc_pos) |
| 9107 | { |
| 9108 | Elf_Data *data = elf_getdata_rawchunk (core, desc_pos, descsz, ELF_T_BYTE); |
| 9109 | if (data == NULL) |
| 9110 | error (EXIT_FAILURE, 0, |
| 9111 | gettext ("cannot convert core note data: %s"), elf_errmsg (-1)); |
| 9112 | |
| 9113 | unsigned char const *ptr = data->d_buf; |
| 9114 | unsigned char const *const end = data->d_buf + data->d_size; |
| 9115 | |
| 9116 | uint64_t count, page_size; |
| 9117 | if (! buf_read_ulong (core, &ptr, end, &count) |
| 9118 | || ! buf_read_ulong (core, &ptr, end, &page_size)) |
| 9119 | { |
| 9120 | fail: |
| 9121 | printf (" Not enough data in NT_FILE note.\n"); |
| 9122 | return; |
| 9123 | } |
| 9124 | |
| 9125 | size_t addrsize = gelf_fsize (core, ELF_T_ADDR, 1, EV_CURRENT); |
| 9126 | uint64_t maxcount = (size_t) (end - ptr) / (3 * addrsize); |
| 9127 | if (count > maxcount) |
| 9128 | goto fail; |
| 9129 | |
| 9130 | /* Where file names are stored. */ |
| 9131 | unsigned char const *const fstart = ptr + 3 * count * addrsize; |
| 9132 | char const *fptr = (char *) fstart; |
| 9133 | |
| 9134 | printf (" %" PRId64 " files:\n", count); |
| 9135 | for (uint64_t i = 0; i < count; ++i) |
| 9136 | { |
| 9137 | uint64_t mstart, mend, moffset; |
| 9138 | if (! buf_read_ulong (core, &ptr, fstart, &mstart) |
| 9139 | || ! buf_read_ulong (core, &ptr, fstart, &mend) |
| 9140 | || ! buf_read_ulong (core, &ptr, fstart, &moffset)) |
| 9141 | goto fail; |
| 9142 | |
| 9143 | const char *fnext = memchr (fptr, '\0', (char *) end - fptr); |
| 9144 | if (fnext == NULL) |
| 9145 | goto fail; |
| 9146 | |
| 9147 | int ct = printf (" %08" PRIx64 "-%08" PRIx64 |
| 9148 | " %08" PRIx64 " %" PRId64, |
| 9149 | mstart, mend, moffset * page_size, mend - mstart); |
| 9150 | printf ("%*s%s\n", ct > 50 ? 3 : 53 - ct, "", fptr); |
| 9151 | |
| 9152 | fptr = fnext + 1; |
| 9153 | } |
| 9154 | } |
| 9155 | |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 9156 | static void |
| 9157 | handle_core_note (Ebl *ebl, const GElf_Nhdr *nhdr, |
| 9158 | const char *name, const void *desc) |
| 9159 | { |
| 9160 | GElf_Word regs_offset; |
| 9161 | size_t nregloc; |
| 9162 | const Ebl_Register_Location *reglocs; |
| 9163 | size_t nitems; |
| 9164 | const Ebl_Core_Item *items; |
| 9165 | |
| 9166 | if (! ebl_core_note (ebl, nhdr, name, |
| 9167 | ®s_offset, &nregloc, ®locs, &nitems, &items)) |
| 9168 | return; |
| 9169 | |
| 9170 | /* Pass 0 for DESCSZ when there are registers in the note, |
| 9171 | so that the ITEMS array does not describe the whole thing. |
| 9172 | For non-register notes, the actual descsz might be a multiple |
| 9173 | of the unit size, not just exactly the unit size. */ |
| 9174 | unsigned int colno = handle_core_items (ebl->elf, desc, |
| 9175 | nregloc == 0 ? nhdr->n_descsz : 0, |
| 9176 | items, nitems); |
| 9177 | if (colno != 0) |
| 9178 | putchar_unlocked ('\n'); |
| 9179 | |
| 9180 | colno = handle_core_registers (ebl, ebl->elf, desc + regs_offset, |
| 9181 | reglocs, nregloc); |
| 9182 | if (colno != 0) |
| 9183 | putchar_unlocked ('\n'); |
| 9184 | } |
| 9185 | |
| 9186 | static void |
| 9187 | handle_notes_data (Ebl *ebl, const GElf_Ehdr *ehdr, |
| 9188 | GElf_Off start, Elf_Data *data) |
| 9189 | { |
| 9190 | fputs_unlocked (gettext (" Owner Data size Type\n"), stdout); |
| 9191 | |
| 9192 | if (data == NULL) |
| 9193 | goto bad_note; |
| 9194 | |
| 9195 | size_t offset = 0; |
| 9196 | GElf_Nhdr nhdr; |
| 9197 | size_t name_offset; |
| 9198 | size_t desc_offset; |
| 9199 | while (offset < data->d_size |
| 9200 | && (offset = gelf_getnote (data, offset, |
| 9201 | &nhdr, &name_offset, &desc_offset)) > 0) |
| 9202 | { |
| 9203 | const char *name = data->d_buf + name_offset; |
| 9204 | const char *desc = data->d_buf + desc_offset; |
| 9205 | |
| 9206 | char buf[100]; |
| 9207 | char buf2[100]; |
| 9208 | printf (gettext (" %-13.*s %9" PRId32 " %s\n"), |
| 9209 | (int) nhdr.n_namesz, name, nhdr.n_descsz, |
| 9210 | ehdr->e_type == ET_CORE |
| 9211 | ? ebl_core_note_type_name (ebl, nhdr.n_type, |
| 9212 | buf, sizeof (buf)) |
| 9213 | : ebl_object_note_type_name (ebl, name, nhdr.n_type, |
| 9214 | buf2, sizeof (buf2))); |
| 9215 | |
| 9216 | /* Filter out invalid entries. */ |
| 9217 | if (memchr (name, '\0', nhdr.n_namesz) != NULL |
| 9218 | /* XXX For now help broken Linux kernels. */ |
| 9219 | || 1) |
| 9220 | { |
| 9221 | if (ehdr->e_type == ET_CORE) |
| 9222 | { |
| 9223 | if (nhdr.n_type == NT_AUXV |
| 9224 | && (nhdr.n_namesz == 4 /* Broken old Linux kernels. */ |
| 9225 | || (nhdr.n_namesz == 5 && name[4] == '\0')) |
| 9226 | && !memcmp (name, "CORE", 4)) |
| 9227 | handle_auxv_note (ebl, ebl->elf, nhdr.n_descsz, |
| 9228 | start + desc_offset); |
Elliott Hughes | 0333382 | 2015-02-18 22:19:45 -0800 | [diff] [blame] | 9229 | else if (nhdr.n_namesz == 5 && strcmp (name, "CORE") == 0) |
| 9230 | switch (nhdr.n_type) |
| 9231 | { |
| 9232 | case NT_SIGINFO: |
| 9233 | handle_siginfo_note (ebl->elf, nhdr.n_descsz, |
| 9234 | start + desc_offset); |
| 9235 | break; |
| 9236 | |
| 9237 | case NT_FILE: |
| 9238 | handle_file_note (ebl->elf, nhdr.n_descsz, |
| 9239 | start + desc_offset); |
| 9240 | break; |
| 9241 | |
| 9242 | default: |
| 9243 | handle_core_note (ebl, &nhdr, name, desc); |
| 9244 | } |
Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame] | 9245 | else |
| 9246 | handle_core_note (ebl, &nhdr, name, desc); |
| 9247 | } |
| 9248 | else |
| 9249 | ebl_object_note (ebl, name, nhdr.n_type, nhdr.n_descsz, desc); |
| 9250 | } |
| 9251 | } |
| 9252 | |
| 9253 | if (offset == data->d_size) |
| 9254 | return; |
| 9255 | |
| 9256 | bad_note: |
| 9257 | error (EXIT_FAILURE, 0, |
| 9258 | gettext ("cannot get content of note section: %s"), |
| 9259 | elf_errmsg (-1)); |
| 9260 | } |
| 9261 | |
| 9262 | static void |
| 9263 | handle_notes (Ebl *ebl, GElf_Ehdr *ehdr) |
| 9264 | { |
| 9265 | /* If we have section headers, just look for SHT_NOTE sections. |
| 9266 | In a debuginfo file, the program headers are not reliable. */ |
| 9267 | if (shnum != 0) |
| 9268 | { |
| 9269 | /* Get the section header string table index. */ |
| 9270 | size_t shstrndx; |
| 9271 | if (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0) |
| 9272 | error (EXIT_FAILURE, 0, |
| 9273 | gettext ("cannot get section header string table index")); |
| 9274 | |
| 9275 | Elf_Scn *scn = NULL; |
| 9276 | while ((scn = elf_nextscn (ebl->elf, scn)) != NULL) |
| 9277 | { |
| 9278 | GElf_Shdr shdr_mem; |
| 9279 | GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); |
| 9280 | |
| 9281 | if (shdr == NULL || shdr->sh_type != SHT_NOTE) |
| 9282 | /* Not what we are looking for. */ |
| 9283 | continue; |
| 9284 | |
| 9285 | printf (gettext ("\ |
| 9286 | \nNote section [%2zu] '%s' of %" PRIu64 " bytes at offset %#0" PRIx64 ":\n"), |
| 9287 | elf_ndxscn (scn), |
| 9288 | elf_strptr (ebl->elf, shstrndx, shdr->sh_name), |
| 9289 | shdr->sh_size, shdr->sh_offset); |
| 9290 | |
| 9291 | handle_notes_data (ebl, ehdr, shdr->sh_offset, |
| 9292 | elf_getdata (scn, NULL)); |
| 9293 | } |
| 9294 | return; |
| 9295 | } |
| 9296 | |
| 9297 | /* We have to look through the program header to find the note |
| 9298 | sections. There can be more than one. */ |
| 9299 | for (size_t cnt = 0; cnt < phnum; ++cnt) |
| 9300 | { |
| 9301 | GElf_Phdr mem; |
| 9302 | GElf_Phdr *phdr = gelf_getphdr (ebl->elf, cnt, &mem); |
| 9303 | |
| 9304 | if (phdr == NULL || phdr->p_type != PT_NOTE) |
| 9305 | /* Not what we are looking for. */ |
| 9306 | continue; |
| 9307 | |
| 9308 | printf (gettext ("\ |
| 9309 | \nNote segment of %" PRIu64 " bytes at offset %#0" PRIx64 ":\n"), |
| 9310 | phdr->p_filesz, phdr->p_offset); |
| 9311 | |
| 9312 | handle_notes_data (ebl, ehdr, phdr->p_offset, |
| 9313 | elf_getdata_rawchunk (ebl->elf, |
| 9314 | phdr->p_offset, phdr->p_filesz, |
| 9315 | ELF_T_NHDR)); |
| 9316 | } |
| 9317 | } |
| 9318 | |
| 9319 | |
| 9320 | static void |
| 9321 | hex_dump (const uint8_t *data, size_t len) |
| 9322 | { |
| 9323 | size_t pos = 0; |
| 9324 | while (pos < len) |
| 9325 | { |
| 9326 | printf (" 0x%08Zx ", pos); |
| 9327 | |
| 9328 | const size_t chunk = MIN (len - pos, 16); |
| 9329 | |
| 9330 | for (size_t i = 0; i < chunk; ++i) |
| 9331 | if (i % 4 == 3) |
| 9332 | printf ("%02x ", data[pos + i]); |
| 9333 | else |
| 9334 | printf ("%02x", data[pos + i]); |
| 9335 | |
| 9336 | if (chunk < 16) |
| 9337 | printf ("%*s", (int) ((16 - chunk) * 2 + (16 - chunk + 3) / 4), ""); |
| 9338 | |
| 9339 | for (size_t i = 0; i < chunk; ++i) |
| 9340 | { |
| 9341 | unsigned char b = data[pos + i]; |
| 9342 | printf ("%c", isprint (b) ? b : '.'); |
| 9343 | } |
| 9344 | |
| 9345 | putchar ('\n'); |
| 9346 | pos += chunk; |
| 9347 | } |
| 9348 | } |
| 9349 | |
| 9350 | static void |
| 9351 | dump_data_section (Elf_Scn *scn, const GElf_Shdr *shdr, const char *name) |
| 9352 | { |
| 9353 | if (shdr->sh_size == 0 || shdr->sh_type == SHT_NOBITS) |
| 9354 | printf (gettext ("\nSection [%Zu] '%s' has no data to dump.\n"), |
| 9355 | elf_ndxscn (scn), name); |
| 9356 | else |
| 9357 | { |
| 9358 | Elf_Data *data = elf_rawdata (scn, NULL); |
| 9359 | if (data == NULL) |
| 9360 | error (0, 0, gettext ("cannot get data for section [%Zu] '%s': %s"), |
| 9361 | elf_ndxscn (scn), name, elf_errmsg (-1)); |
| 9362 | else |
| 9363 | { |
| 9364 | printf (gettext ("\nHex dump of section [%Zu] '%s', %" PRIu64 |
| 9365 | " bytes at offset %#0" PRIx64 ":\n"), |
| 9366 | elf_ndxscn (scn), name, |
| 9367 | shdr->sh_size, shdr->sh_offset); |
| 9368 | hex_dump (data->d_buf, data->d_size); |
| 9369 | } |
| 9370 | } |
| 9371 | } |
| 9372 | |
| 9373 | static void |
| 9374 | print_string_section (Elf_Scn *scn, const GElf_Shdr *shdr, const char *name) |
| 9375 | { |
| 9376 | if (shdr->sh_size == 0 || shdr->sh_type == SHT_NOBITS) |
| 9377 | printf (gettext ("\nSection [%Zu] '%s' has no strings to dump.\n"), |
| 9378 | elf_ndxscn (scn), name); |
| 9379 | else |
| 9380 | { |
| 9381 | Elf_Data *data = elf_rawdata (scn, NULL); |
| 9382 | if (data == NULL) |
| 9383 | error (0, 0, gettext ("cannot get data for section [%Zu] '%s': %s"), |
| 9384 | elf_ndxscn (scn), name, elf_errmsg (-1)); |
| 9385 | else |
| 9386 | { |
| 9387 | printf (gettext ("\nString section [%Zu] '%s' contains %" PRIu64 |
| 9388 | " bytes at offset %#0" PRIx64 ":\n"), |
| 9389 | elf_ndxscn (scn), name, |
| 9390 | shdr->sh_size, shdr->sh_offset); |
| 9391 | |
| 9392 | const char *start = data->d_buf; |
| 9393 | const char *const limit = start + data->d_size; |
| 9394 | do |
| 9395 | { |
| 9396 | const char *end = memchr (start, '\0', limit - start); |
| 9397 | const size_t pos = start - (const char *) data->d_buf; |
| 9398 | if (unlikely (end == NULL)) |
| 9399 | { |
| 9400 | printf (" [%6Zx]- %.*s\n", |
| 9401 | pos, (int) (limit - start), start); |
| 9402 | break; |
| 9403 | } |
| 9404 | printf (" [%6Zx] %s\n", pos, start); |
| 9405 | start = end + 1; |
| 9406 | } while (start < limit); |
| 9407 | } |
| 9408 | } |
| 9409 | } |
| 9410 | |
| 9411 | static void |
| 9412 | for_each_section_argument (Elf *elf, const struct section_argument *list, |
| 9413 | void (*dump) (Elf_Scn *scn, const GElf_Shdr *shdr, |
| 9414 | const char *name)) |
| 9415 | { |
| 9416 | /* Get the section header string table index. */ |
| 9417 | size_t shstrndx; |
| 9418 | if (elf_getshdrstrndx (elf, &shstrndx) < 0) |
| 9419 | error (EXIT_FAILURE, 0, |
| 9420 | gettext ("cannot get section header string table index")); |
| 9421 | |
| 9422 | for (const struct section_argument *a = list; a != NULL; a = a->next) |
| 9423 | { |
| 9424 | Elf_Scn *scn; |
| 9425 | GElf_Shdr shdr_mem; |
| 9426 | const char *name = NULL; |
| 9427 | |
| 9428 | char *endp = NULL; |
| 9429 | unsigned long int shndx = strtoul (a->arg, &endp, 0); |
| 9430 | if (endp != a->arg && *endp == '\0') |
| 9431 | { |
| 9432 | scn = elf_getscn (elf, shndx); |
| 9433 | if (scn == NULL) |
| 9434 | { |
| 9435 | error (0, 0, gettext ("\nsection [%lu] does not exist"), shndx); |
| 9436 | continue; |
| 9437 | } |
| 9438 | |
| 9439 | if (gelf_getshdr (scn, &shdr_mem) == NULL) |
| 9440 | error (EXIT_FAILURE, 0, gettext ("cannot get section header: %s"), |
| 9441 | elf_errmsg (-1)); |
| 9442 | name = elf_strptr (elf, shstrndx, shdr_mem.sh_name); |
| 9443 | } |
| 9444 | else |
| 9445 | { |
| 9446 | /* Need to look up the section by name. */ |
| 9447 | scn = NULL; |
| 9448 | bool found = false; |
| 9449 | while ((scn = elf_nextscn (elf, scn)) != NULL) |
| 9450 | { |
| 9451 | if (gelf_getshdr (scn, &shdr_mem) == NULL) |
| 9452 | continue; |
| 9453 | name = elf_strptr (elf, shstrndx, shdr_mem.sh_name); |
| 9454 | if (name == NULL) |
| 9455 | continue; |
| 9456 | if (!strcmp (name, a->arg)) |
| 9457 | { |
| 9458 | found = true; |
| 9459 | (*dump) (scn, &shdr_mem, name); |
| 9460 | } |
| 9461 | } |
| 9462 | |
| 9463 | if (unlikely (!found) && !a->implicit) |
| 9464 | error (0, 0, gettext ("\nsection '%s' does not exist"), a->arg); |
| 9465 | } |
| 9466 | } |
| 9467 | } |
| 9468 | |
| 9469 | static void |
| 9470 | dump_data (Ebl *ebl) |
| 9471 | { |
| 9472 | for_each_section_argument (ebl->elf, dump_data_sections, &dump_data_section); |
| 9473 | } |
| 9474 | |
| 9475 | static void |
| 9476 | dump_strings (Ebl *ebl) |
| 9477 | { |
| 9478 | for_each_section_argument (ebl->elf, string_sections, &print_string_section); |
| 9479 | } |
| 9480 | |
| 9481 | static void |
| 9482 | print_strings (Ebl *ebl) |
| 9483 | { |
| 9484 | /* Get the section header string table index. */ |
| 9485 | size_t shstrndx; |
| 9486 | if (unlikely (elf_getshdrstrndx (ebl->elf, &shstrndx) < 0)) |
| 9487 | error (EXIT_FAILURE, 0, |
| 9488 | gettext ("cannot get section header string table index")); |
| 9489 | |
| 9490 | Elf_Scn *scn; |
| 9491 | GElf_Shdr shdr_mem; |
| 9492 | const char *name; |
| 9493 | scn = NULL; |
| 9494 | while ((scn = elf_nextscn (ebl->elf, scn)) != NULL) |
| 9495 | { |
| 9496 | if (gelf_getshdr (scn, &shdr_mem) == NULL) |
| 9497 | continue; |
| 9498 | |
| 9499 | if (shdr_mem.sh_type != SHT_PROGBITS |
| 9500 | || !(shdr_mem.sh_flags & SHF_STRINGS)) |
| 9501 | continue; |
| 9502 | |
| 9503 | name = elf_strptr (ebl->elf, shstrndx, shdr_mem.sh_name); |
| 9504 | if (name == NULL) |
| 9505 | continue; |
| 9506 | |
| 9507 | print_string_section (scn, &shdr_mem, name); |
| 9508 | } |
| 9509 | } |
| 9510 | |
| 9511 | static void |
| 9512 | dump_archive_index (Elf *elf, const char *fname) |
| 9513 | { |
| 9514 | size_t narsym; |
| 9515 | const Elf_Arsym *arsym = elf_getarsym (elf, &narsym); |
| 9516 | if (arsym == NULL) |
| 9517 | { |
| 9518 | int result = elf_errno (); |
| 9519 | if (unlikely (result != ELF_E_NO_INDEX)) |
| 9520 | error (EXIT_FAILURE, 0, |
| 9521 | gettext ("cannot get symbol index of archive '%s': %s"), |
| 9522 | fname, elf_errmsg (result)); |
| 9523 | else |
| 9524 | printf (gettext ("\nArchive '%s' has no symbol index\n"), fname); |
| 9525 | return; |
| 9526 | } |
| 9527 | |
| 9528 | printf (gettext ("\nIndex of archive '%s' has %Zu entries:\n"), |
| 9529 | fname, narsym); |
| 9530 | |
| 9531 | size_t as_off = 0; |
| 9532 | for (const Elf_Arsym *s = arsym; s < &arsym[narsym - 1]; ++s) |
| 9533 | { |
| 9534 | if (s->as_off != as_off) |
| 9535 | { |
| 9536 | as_off = s->as_off; |
| 9537 | |
| 9538 | Elf *subelf; |
| 9539 | if (unlikely (elf_rand (elf, as_off) == 0) |
| 9540 | || unlikely ((subelf = elf_begin (-1, ELF_C_READ_MMAP, elf)) |
| 9541 | == NULL)) |
| 9542 | #if __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 7) |
| 9543 | while (1) |
| 9544 | #endif |
| 9545 | error (EXIT_FAILURE, 0, |
| 9546 | gettext ("cannot extract member at offset %Zu in '%s': %s"), |
| 9547 | as_off, fname, elf_errmsg (-1)); |
| 9548 | |
| 9549 | const Elf_Arhdr *h = elf_getarhdr (subelf); |
| 9550 | |
| 9551 | printf (gettext ("Archive member '%s' contains:\n"), h->ar_name); |
| 9552 | |
| 9553 | elf_end (subelf); |
| 9554 | } |
| 9555 | |
| 9556 | printf ("\t%s\n", s->as_name); |
| 9557 | } |
| 9558 | } |
| 9559 | |
| 9560 | #include "debugpred.h" |