1 /*- 2 * Copyright (c) 2003 David O'Brien. All rights reserved. 3 * Copyright (c) 2001 Jake Burkholder 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <sys/types.h> 32 #include <sys/elf32.h> 33 #include <sys/elf64.h> 34 #include <sys/endian.h> 35 #include <sys/mman.h> 36 #include <sys/stat.h> 37 #include <err.h> 38 #include <fcntl.h> 39 #include <inttypes.h> 40 #include <stddef.h> 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <unistd.h> 45 46 #define ED_DYN (1<<0) 47 #define ED_EHDR (1<<1) 48 #define ED_GOT (1<<2) 49 #define ED_HASH (1<<3) 50 #define ED_INTERP (1<<4) 51 #define ED_NOTE (1<<5) 52 #define ED_PHDR (1<<6) 53 #define ED_REL (1<<7) 54 #define ED_SHDR (1<<8) 55 #define ED_SYMTAB (1<<9) 56 #define ED_ALL ((1<<10)-1) 57 58 #define elf_get_addr elf_get_quad 59 #define elf_get_off elf_get_quad 60 #define elf_get_size elf_get_quad 61 62 enum elf_member { 63 D_TAG = 1, D_PTR, D_VAL, 64 65 E_CLASS, E_DATA, E_OSABI, E_TYPE, E_MACHINE, E_VERSION, E_ENTRY, 66 E_PHOFF, E_SHOFF, E_FLAGS, E_EHSIZE, E_PHENTSIZE, E_PHNUM, E_SHENTSIZE, 67 E_SHNUM, E_SHSTRNDX, 68 69 N_NAMESZ, N_DESCSZ, N_TYPE, 70 71 P_TYPE, P_OFFSET, P_VADDR, P_PADDR, P_FILESZ, P_MEMSZ, P_FLAGS, 72 P_ALIGN, 73 74 SH_NAME, SH_TYPE, SH_FLAGS, SH_ADDR, SH_OFFSET, SH_SIZE, SH_LINK, 75 SH_INFO, SH_ADDRALIGN, SH_ENTSIZE, 76 77 ST_NAME, ST_VALUE, ST_SIZE, ST_INFO, ST_SHNDX, 78 79 R_OFFSET, R_INFO, 80 81 RA_OFFSET, RA_INFO, RA_ADDEND 82 }; 83 84 typedef enum elf_member elf_member_t; 85 86 static int elf32_offsets[] = { 87 0, 88 89 offsetof(Elf32_Dyn, d_tag), offsetof(Elf32_Dyn, d_un.d_ptr), 90 offsetof(Elf32_Dyn, d_un.d_val), 91 92 offsetof(Elf32_Ehdr, e_ident[EI_CLASS]), 93 offsetof(Elf32_Ehdr, e_ident[EI_DATA]), 94 offsetof(Elf32_Ehdr, e_ident[EI_OSABI]), 95 offsetof(Elf32_Ehdr, e_type), offsetof(Elf32_Ehdr, e_machine), 96 offsetof(Elf32_Ehdr, e_version), offsetof(Elf32_Ehdr, e_entry), 97 offsetof(Elf32_Ehdr, e_phoff), offsetof(Elf32_Ehdr, e_shoff), 98 offsetof(Elf32_Ehdr, e_flags), offsetof(Elf32_Ehdr, e_ehsize), 99 offsetof(Elf32_Ehdr, e_phentsize), offsetof(Elf32_Ehdr, e_phnum), 100 offsetof(Elf32_Ehdr, e_shentsize), offsetof(Elf32_Ehdr, e_shnum), 101 offsetof(Elf32_Ehdr, e_shstrndx), 102 103 offsetof(Elf_Note, n_namesz), offsetof(Elf_Note, n_descsz), 104 offsetof(Elf_Note, n_type), 105 106 offsetof(Elf32_Phdr, p_type), offsetof(Elf32_Phdr, p_offset), 107 offsetof(Elf32_Phdr, p_vaddr), offsetof(Elf32_Phdr, p_paddr), 108 offsetof(Elf32_Phdr, p_filesz), offsetof(Elf32_Phdr, p_memsz), 109 offsetof(Elf32_Phdr, p_flags), offsetof(Elf32_Phdr, p_align), 110 111 offsetof(Elf32_Shdr, sh_name), offsetof(Elf32_Shdr, sh_type), 112 offsetof(Elf32_Shdr, sh_flags), offsetof(Elf32_Shdr, sh_addr), 113 offsetof(Elf32_Shdr, sh_offset), offsetof(Elf32_Shdr, sh_size), 114 offsetof(Elf32_Shdr, sh_link), offsetof(Elf32_Shdr, sh_info), 115 offsetof(Elf32_Shdr, sh_addralign), offsetof(Elf32_Shdr, sh_entsize), 116 117 offsetof(Elf32_Sym, st_name), offsetof(Elf32_Sym, st_value), 118 offsetof(Elf32_Sym, st_size), offsetof(Elf32_Sym, st_info), 119 offsetof(Elf32_Sym, st_shndx), 120 121 offsetof(Elf32_Rel, r_offset), offsetof(Elf32_Rel, r_info), 122 123 offsetof(Elf32_Rela, r_offset), offsetof(Elf32_Rela, r_info), 124 offsetof(Elf32_Rela, r_addend) 125 }; 126 127 static int elf64_offsets[] = { 128 0, 129 130 offsetof(Elf64_Dyn, d_tag), offsetof(Elf64_Dyn, d_un.d_ptr), 131 offsetof(Elf64_Dyn, d_un.d_val), 132 133 offsetof(Elf32_Ehdr, e_ident[EI_CLASS]), 134 offsetof(Elf32_Ehdr, e_ident[EI_DATA]), 135 offsetof(Elf32_Ehdr, e_ident[EI_OSABI]), 136 offsetof(Elf64_Ehdr, e_type), offsetof(Elf64_Ehdr, e_machine), 137 offsetof(Elf64_Ehdr, e_version), offsetof(Elf64_Ehdr, e_entry), 138 offsetof(Elf64_Ehdr, e_phoff), offsetof(Elf64_Ehdr, e_shoff), 139 offsetof(Elf64_Ehdr, e_flags), offsetof(Elf64_Ehdr, e_ehsize), 140 offsetof(Elf64_Ehdr, e_phentsize), offsetof(Elf64_Ehdr, e_phnum), 141 offsetof(Elf64_Ehdr, e_shentsize), offsetof(Elf64_Ehdr, e_shnum), 142 offsetof(Elf64_Ehdr, e_shstrndx), 143 144 offsetof(Elf_Note, n_namesz), offsetof(Elf_Note, n_descsz), 145 offsetof(Elf_Note, n_type), 146 147 offsetof(Elf64_Phdr, p_type), offsetof(Elf64_Phdr, p_offset), 148 offsetof(Elf64_Phdr, p_vaddr), offsetof(Elf64_Phdr, p_paddr), 149 offsetof(Elf64_Phdr, p_filesz), offsetof(Elf64_Phdr, p_memsz), 150 offsetof(Elf64_Phdr, p_flags), offsetof(Elf64_Phdr, p_align), 151 152 offsetof(Elf64_Shdr, sh_name), offsetof(Elf64_Shdr, sh_type), 153 offsetof(Elf64_Shdr, sh_flags), offsetof(Elf64_Shdr, sh_addr), 154 offsetof(Elf64_Shdr, sh_offset), offsetof(Elf64_Shdr, sh_size), 155 offsetof(Elf64_Shdr, sh_link), offsetof(Elf64_Shdr, sh_info), 156 offsetof(Elf64_Shdr, sh_addralign), offsetof(Elf64_Shdr, sh_entsize), 157 158 offsetof(Elf64_Sym, st_name), offsetof(Elf64_Sym, st_value), 159 offsetof(Elf64_Sym, st_size), offsetof(Elf64_Sym, st_info), 160 offsetof(Elf64_Sym, st_shndx), 161 162 offsetof(Elf64_Rel, r_offset), offsetof(Elf64_Rel, r_info), 163 164 offsetof(Elf64_Rela, r_offset), offsetof(Elf64_Rela, r_info), 165 offsetof(Elf64_Rela, r_addend) 166 }; 167 168 /* http://www.sco.com/developers/gabi/latest/ch5.dynamic.html#tag_encodings */ 169 static const char * 170 d_tags(u_int64_t tag) { 171 switch (tag) { 172 case 0: return "DT_NULL"; 173 case 1: return "DT_NEEDED"; 174 case 2: return "DT_PLTRELSZ"; 175 case 3: return "DT_PLTGOT"; 176 case 4: return "DT_HASH"; 177 case 5: return "DT_STRTAB"; 178 case 6: return "DT_SYMTAB"; 179 case 7: return "DT_RELA"; 180 case 8: return "DT_RELASZ"; 181 case 9: return "DT_RELAENT"; 182 case 10: return "DT_STRSZ"; 183 case 11: return "DT_SYMENT"; 184 case 12: return "DT_INIT"; 185 case 13: return "DT_FINI"; 186 case 14: return "DT_SONAME"; 187 case 15: return "DT_RPATH"; 188 case 16: return "DT_SYMBOLIC"; 189 case 17: return "DT_REL"; 190 case 18: return "DT_RELSZ"; 191 case 19: return "DT_RELENT"; 192 case 20: return "DT_PLTREL"; 193 case 21: return "DT_DEBUG"; 194 case 22: return "DT_TEXTREL"; 195 case 23: return "DT_JMPREL"; 196 case 24: return "DT_BIND_NOW"; 197 case 25: return "DT_INIT_ARRAY"; 198 case 26: return "DT_FINI_ARRAY"; 199 case 27: return "DT_INIT_ARRAYSZ"; 200 case 28: return "DT_FINI_ARRAYSZ"; 201 case 29: return "DT_RUNPATH"; 202 case 30: return "DT_FLAGS"; 203 case 32: return "DT_PREINIT_ARRAY"; /* XXX: DT_ENCODING */ 204 case 33: return "DT_PREINIT_ARRAYSZ"; 205 /* 0x6000000D - 0x6ffff000 operating system-specific semantics */ 206 case 0x6ffffdf5: return "DT_GNU_PRELINKED"; 207 case 0x6ffffdf6: return "DT_GNU_CONFLICTSZ"; 208 case 0x6ffffdf7: return "DT_GNU_LIBLISTSZ"; 209 case 0x6ffffdf8: return "DT_SUNW_CHECKSUM"; 210 case 0x6ffffdf9: return "DT_PLTPADSZ"; 211 case 0x6ffffdfa: return "DT_MOVEENT"; 212 case 0x6ffffdfb: return "DT_MOVESZ"; 213 case 0x6ffffdfc: return "DT_FEATURE"; 214 case 0x6ffffdfd: return "DT_POSFLAG_1"; 215 case 0x6ffffdfe: return "DT_SYMINSZ"; 216 case 0x6ffffdff: return "DT_SYMINENT (DT_VALRNGHI)"; 217 case 0x6ffffe00: return "DT_ADDRRNGLO"; 218 case 0x6ffffef8: return "DT_GNU_CONFLICT"; 219 case 0x6ffffef9: return "DT_GNU_LIBLIST"; 220 case 0x6ffffefa: return "DT_SUNW_CONFIG"; 221 case 0x6ffffefb: return "DT_SUNW_DEPAUDIT"; 222 case 0x6ffffefc: return "DT_SUNW_AUDIT"; 223 case 0x6ffffefd: return "DT_SUNW_PLTPAD"; 224 case 0x6ffffefe: return "DT_SUNW_MOVETAB"; 225 case 0x6ffffeff: return "DT_SYMINFO (DT_ADDRRNGHI)"; 226 case 0x6ffffff9: return "DT_RELACOUNT"; 227 case 0x6ffffffa: return "DT_RELCOUNT"; 228 case 0x6ffffffb: return "DT_FLAGS_1"; 229 case 0x6ffffffc: return "DT_VERDEF"; 230 case 0x6ffffffd: return "DT_VERDEFNUM"; 231 case 0x6ffffffe: return "DT_VERNEED"; 232 case 0x6fffffff: return "DT_VERNEEDNUM"; 233 case 0x6ffffff0: return "DT_GNU_VERSYM"; 234 /* 0x70000000 - 0x7fffffff processor-specific semantics */ 235 case 0x70000000: return "DT_IA_64_PLT_RESERVE"; 236 case 0x7ffffffd: return "DT_SUNW_AUXILIARY"; 237 case 0x7ffffffe: return "DT_SUNW_USED"; 238 case 0x7fffffff: return "DT_SUNW_FILTER"; 239 default: return "ERROR: TAG NOT DEFINED"; 240 } 241 } 242 243 static const char * 244 e_machines(u_int mach) 245 { 246 static char machdesc[64]; 247 248 switch (mach) { 249 case EM_NONE: return "EM_NONE"; 250 case EM_M32: return "EM_M32"; 251 case EM_SPARC: return "EM_SPARC"; 252 case EM_386: return "EM_386"; 253 case EM_68K: return "EM_68K"; 254 case EM_88K: return "EM_88K"; 255 case EM_860: return "EM_860"; 256 case EM_MIPS: return "EM_MIPS"; 257 case EM_PPC: return "EM_PPC"; 258 case EM_PPC64: return "EM_PPC64"; 259 case EM_ARM: return "EM_ARM"; 260 case EM_ALPHA: return "EM_ALPHA (legacy)"; 261 case EM_SPARCV9:return "EM_SPARCV9"; 262 case EM_IA_64: return "EM_IA_64"; 263 case EM_X86_64: return "EM_X86_64"; 264 } 265 snprintf(machdesc, sizeof(machdesc), 266 "(unknown machine) -- type 0x%x", mach); 267 return (machdesc); 268 } 269 270 static const char *e_types[] = { 271 "ET_NONE", "ET_REL", "ET_EXEC", "ET_DYN", "ET_CORE" 272 }; 273 274 static const char *ei_versions[] = { 275 "EV_NONE", "EV_CURRENT" 276 }; 277 278 static const char *ei_classes[] = { 279 "ELFCLASSNONE", "ELFCLASS32", "ELFCLASS64" 280 }; 281 282 static const char *ei_data[] = { 283 "ELFDATANONE", "ELFDATA2LSB", "ELFDATA2MSB" 284 }; 285 286 static const char *ei_abis[256] = { 287 "ELFOSABI_SYSV", "ELFOSABI_HPUX", "ELFOSABI_NETBSD", "ELFOSABI_LINUX", 288 "ELFOSABI_HURD", "ELFOSABI_86OPEN", "ELFOSABI_SOLARIS", "ELFOSABI_AIX", 289 "ELFOSABI_IRIX", "ELFOSABI_FREEBSD", "ELFOSABI_TRU64", 290 "ELFOSABI_MODESTO", "ELFOSABI_OPENBSD", 291 [255] = "ELFOSABI_STANDALONE" 292 }; 293 294 static const char *p_types[] = { 295 "PT_NULL", "PT_LOAD", "PT_DYNAMIC", "PT_INTERP", "PT_NOTE", 296 "PT_SHLIB", "PT_PHDR", "PT_TLS" 297 }; 298 299 static const char *p_flags[] = { 300 "", "PF_X", "PF_W", "PF_X|PF_W", "PF_R", "PF_X|PF_R", "PF_W|PF_R", 301 "PF_X|PF_W|PF_R" 302 }; 303 304 /* http://www.sco.com/developers/gabi/latest/ch4.sheader.html#sh_type */ 305 static const char * 306 sh_types(u_int64_t sht) { 307 switch (sht) { 308 case 0: return "SHT_NULL"; 309 case 1: return "SHT_PROGBITS"; 310 case 2: return "SHT_SYMTAB"; 311 case 3: return "SHT_STRTAB"; 312 case 4: return "SHT_RELA"; 313 case 5: return "SHT_HASH"; 314 case 6: return "SHT_DYNAMIC"; 315 case 7: return "SHT_NOTE"; 316 case 8: return "SHT_NOBITS"; 317 case 9: return "SHT_REL"; 318 case 10: return "SHT_SHLIB"; 319 case 11: return "SHT_DYNSYM"; 320 case 14: return "SHT_INIT_ARRAY"; 321 case 15: return "SHT_FINI_ARRAY"; 322 case 16: return "SHT_PREINIT_ARRAY"; 323 case 17: return "SHT_GROUP"; 324 case 18: return "SHT_SYMTAB_SHNDX"; 325 /* 0x60000000 - 0x6fffffff operating system-specific semantics */ 326 case 0x6ffffff0: return "XXX:VERSYM"; 327 case 0x6ffffff4: return "SHT_SUNW_dof"; 328 case 0x6ffffff7: return "SHT_GNU_LIBLIST"; 329 case 0x6ffffffc: return "XXX:VERDEF"; 330 case 0x6ffffffd: return "SHT_SUNW(GNU)_verdef"; 331 case 0x6ffffffe: return "SHT_SUNW(GNU)_verneed"; 332 case 0x6fffffff: return "SHT_SUNW(GNU)_versym"; 333 /* 0x70000000 - 0x7fffffff processor-specific semantics */ 334 case 0x70000000: return "SHT_IA_64_EXT"; 335 case 0x70000001: return "SHT_IA_64_UNWIND"; 336 case 0x7ffffffd: return "XXX:AUXILIARY"; 337 case 0x7fffffff: return "XXX:FILTER"; 338 /* 0x80000000 - 0xffffffff application programs */ 339 default: return "ERROR: SHT NOT DEFINED"; 340 } 341 } 342 343 static const char *sh_flags[] = { 344 "", "SHF_WRITE", "SHF_ALLOC", "SHF_WRITE|SHF_ALLOC", "SHF_EXECINSTR", 345 "SHF_WRITE|SHF_EXECINSTR", "SHF_ALLOC|SHF_EXECINSTR", 346 "SHF_WRITE|SHF_ALLOC|SHF_EXECINSTR" 347 }; 348 349 static const char *st_types[] = { 350 "STT_NOTYPE", "STT_OBJECT", "STT_FUNC", "STT_SECTION", "STT_FILE" 351 }; 352 353 static const char *st_bindings[] = { 354 "STB_LOCAL", "STB_GLOBAL", "STB_WEAK" 355 }; 356 357 static char *dynstr; 358 static char *shstrtab; 359 static char *strtab; 360 static FILE *out; 361 362 static u_int64_t elf_get_byte(Elf32_Ehdr *e, void *base, elf_member_t member); 363 static u_int64_t elf_get_quarter(Elf32_Ehdr *e, void *base, 364 elf_member_t member); 365 #if 0 366 static u_int64_t elf_get_half(Elf32_Ehdr *e, void *base, elf_member_t member); 367 #endif 368 static u_int64_t elf_get_word(Elf32_Ehdr *e, void *base, elf_member_t member); 369 static u_int64_t elf_get_quad(Elf32_Ehdr *e, void *base, elf_member_t member); 370 371 static void elf_print_ehdr(Elf32_Ehdr *e, void *sh); 372 static void elf_print_phdr(Elf32_Ehdr *e, void *p); 373 static void elf_print_shdr(Elf32_Ehdr *e, void *sh); 374 static void elf_print_symtab(Elf32_Ehdr *e, void *sh, char *str); 375 static void elf_print_dynamic(Elf32_Ehdr *e, void *sh); 376 static void elf_print_rel(Elf32_Ehdr *e, void *r); 377 static void elf_print_rela(Elf32_Ehdr *e, void *ra); 378 static void elf_print_interp(Elf32_Ehdr *e, void *p); 379 static void elf_print_got(Elf32_Ehdr *e, void *sh); 380 static void elf_print_hash(Elf32_Ehdr *e, void *sh); 381 static void elf_print_note(Elf32_Ehdr *e, void *sh); 382 383 static void usage(void); 384 385 /* 386 * Helpers for ELF files with shnum or shstrndx values that don't fit in the 387 * ELF header. If the values are too large then an escape value is used to 388 * indicate that the actual value is found in one of section 0's fields. 389 */ 390 static uint64_t 391 elf_get_shnum(Elf32_Ehdr *e, void *sh) 392 { 393 uint64_t shnum; 394 395 shnum = elf_get_quarter(e, e, E_SHNUM); 396 if (shnum == 0) 397 shnum = elf_get_word(e, (char *)sh, SH_SIZE); 398 return shnum; 399 } 400 401 static uint64_t 402 elf_get_shstrndx(Elf32_Ehdr *e, void *sh) 403 { 404 uint64_t shstrndx; 405 406 shstrndx = elf_get_quarter(e, e, E_SHSTRNDX); 407 if (shstrndx == SHN_XINDEX) 408 shstrndx = elf_get_word(e, (char *)sh, SH_LINK); 409 return shstrndx; 410 } 411 412 int 413 main(int ac, char **av) 414 { 415 u_int64_t phoff; 416 u_int64_t shoff; 417 u_int64_t phentsize; 418 u_int64_t phnum; 419 u_int64_t shentsize; 420 u_int64_t shnum; 421 u_int64_t shstrndx; 422 u_int64_t offset; 423 u_int64_t name; 424 u_int64_t type; 425 struct stat sb; 426 u_int flags; 427 Elf32_Ehdr *e; 428 void *p; 429 void *sh; 430 void *v; 431 int fd; 432 int ch; 433 int i; 434 435 out = stdout; 436 flags = 0; 437 while ((ch = getopt(ac, av, "acdeiGhnprsw:")) != -1) 438 switch (ch) { 439 case 'a': 440 flags = ED_ALL; 441 break; 442 case 'c': 443 flags |= ED_SHDR; 444 break; 445 case 'd': 446 flags |= ED_DYN; 447 break; 448 case 'e': 449 flags |= ED_EHDR; 450 break; 451 case 'i': 452 flags |= ED_INTERP; 453 break; 454 case 'G': 455 flags |= ED_GOT; 456 break; 457 case 'h': 458 flags |= ED_HASH; 459 break; 460 case 'n': 461 flags |= ED_NOTE; 462 break; 463 case 'p': 464 flags |= ED_PHDR; 465 break; 466 case 'r': 467 flags |= ED_REL; 468 break; 469 case 's': 470 flags |= ED_SYMTAB; 471 break; 472 case 'w': 473 if ((out = fopen(optarg, "w")) == NULL) 474 err(1, "%s", optarg); 475 break; 476 case '?': 477 default: 478 usage(); 479 } 480 ac -= optind; 481 av += optind; 482 if (ac == 0 || flags == 0) 483 usage(); 484 if ((fd = open(*av, O_RDONLY)) < 0 || 485 fstat(fd, &sb) < 0) 486 err(1, "%s", *av); 487 e = mmap(NULL, sb.st_size, PROT_READ, MAP_SHARED, fd, 0); 488 if (e == MAP_FAILED) 489 err(1, NULL); 490 if (!IS_ELF(*(Elf32_Ehdr *)e)) 491 errx(1, "not an elf file"); 492 phoff = elf_get_off(e, e, E_PHOFF); 493 shoff = elf_get_off(e, e, E_SHOFF); 494 phentsize = elf_get_quarter(e, e, E_PHENTSIZE); 495 phnum = elf_get_quarter(e, e, E_PHNUM); 496 shentsize = elf_get_quarter(e, e, E_SHENTSIZE); 497 p = (char *)e + phoff; 498 if (shoff > 0) { 499 sh = (char *)e + shoff; 500 shnum = elf_get_shnum(e, sh); 501 shstrndx = elf_get_shstrndx(e, sh); 502 offset = elf_get_off(e, (char *)sh + shstrndx * shentsize, 503 SH_OFFSET); 504 shstrtab = (char *)e + offset; 505 } else { 506 sh = NULL; 507 shnum = 0; 508 shstrndx = 0; 509 shstrtab = NULL; 510 } 511 for (i = 0; (u_int64_t)i < shnum; i++) { 512 name = elf_get_word(e, (char *)sh + i * shentsize, SH_NAME); 513 offset = elf_get_off(e, (char *)sh + i * shentsize, SH_OFFSET); 514 if (strcmp(shstrtab + name, ".strtab") == 0) 515 strtab = (char *)e + offset; 516 if (strcmp(shstrtab + name, ".dynstr") == 0) 517 dynstr = (char *)e + offset; 518 } 519 if (flags & ED_EHDR) 520 elf_print_ehdr(e, sh); 521 if (flags & ED_PHDR) 522 elf_print_phdr(e, p); 523 if (flags & ED_SHDR) 524 elf_print_shdr(e, sh); 525 for (i = 0; (u_int64_t)i < phnum; i++) { 526 v = (char *)p + i * phentsize; 527 type = elf_get_word(e, v, P_TYPE); 528 switch (type) { 529 case PT_INTERP: 530 if (flags & ED_INTERP) 531 elf_print_interp(e, v); 532 break; 533 case PT_NULL: 534 case PT_LOAD: 535 case PT_DYNAMIC: 536 case PT_NOTE: 537 case PT_SHLIB: 538 case PT_PHDR: 539 break; 540 } 541 } 542 for (i = 0; (u_int64_t)i < shnum; i++) { 543 v = (char *)sh + i * shentsize; 544 type = elf_get_word(e, v, SH_TYPE); 545 switch (type) { 546 case SHT_SYMTAB: 547 if (flags & ED_SYMTAB) 548 elf_print_symtab(e, v, strtab); 549 break; 550 case SHT_DYNAMIC: 551 if (flags & ED_DYN) 552 elf_print_dynamic(e, v); 553 break; 554 case SHT_RELA: 555 if (flags & ED_REL) 556 elf_print_rela(e, v); 557 break; 558 case SHT_REL: 559 if (flags & ED_REL) 560 elf_print_rel(e, v); 561 break; 562 case SHT_NOTE: 563 name = elf_get_word(e, v, SH_NAME); 564 if (flags & ED_NOTE && 565 strcmp(shstrtab + name, ".note.ABI-tag") == 0) 566 elf_print_note(e, v); 567 break; 568 case SHT_DYNSYM: 569 if (flags & ED_SYMTAB) 570 elf_print_symtab(e, v, dynstr); 571 break; 572 case SHT_PROGBITS: 573 name = elf_get_word(e, v, SH_NAME); 574 if (flags & ED_GOT && 575 strcmp(shstrtab + name, ".got") == 0) 576 elf_print_got(e, v); 577 break; 578 case SHT_HASH: 579 if (flags & ED_HASH) 580 elf_print_hash(e, v); 581 break; 582 case SHT_NULL: 583 case SHT_STRTAB: 584 case SHT_NOBITS: 585 case SHT_SHLIB: 586 break; 587 } 588 } 589 590 return 0; 591 } 592 593 static void 594 elf_print_ehdr(Elf32_Ehdr *e, void *sh) 595 { 596 u_int64_t class; 597 u_int64_t data; 598 u_int64_t osabi; 599 u_int64_t type; 600 u_int64_t machine; 601 u_int64_t version; 602 u_int64_t entry; 603 u_int64_t phoff; 604 u_int64_t shoff; 605 u_int64_t flags; 606 u_int64_t ehsize; 607 u_int64_t phentsize; 608 u_int64_t phnum; 609 u_int64_t shentsize; 610 u_int64_t shnum; 611 u_int64_t shstrndx; 612 613 class = elf_get_byte(e, e, E_CLASS); 614 data = elf_get_byte(e, e, E_DATA); 615 osabi = elf_get_byte(e, e, E_OSABI); 616 type = elf_get_quarter(e, e, E_TYPE); 617 machine = elf_get_quarter(e, e, E_MACHINE); 618 version = elf_get_word(e, e, E_VERSION); 619 entry = elf_get_addr(e, e, E_ENTRY); 620 phoff = elf_get_off(e, e, E_PHOFF); 621 shoff = elf_get_off(e, e, E_SHOFF); 622 flags = elf_get_word(e, e, E_FLAGS); 623 ehsize = elf_get_quarter(e, e, E_EHSIZE); 624 phentsize = elf_get_quarter(e, e, E_PHENTSIZE); 625 phnum = elf_get_quarter(e, e, E_PHNUM); 626 shentsize = elf_get_quarter(e, e, E_SHENTSIZE); 627 fprintf(out, "\nelf header:\n"); 628 fprintf(out, "\n"); 629 fprintf(out, "\te_ident: %s %s %s\n", ei_classes[class], ei_data[data], 630 ei_abis[osabi]); 631 fprintf(out, "\te_type: %s\n", e_types[type]); 632 fprintf(out, "\te_machine: %s\n", e_machines(machine)); 633 fprintf(out, "\te_version: %s\n", ei_versions[version]); 634 fprintf(out, "\te_entry: %#jx\n", (intmax_t)entry); 635 fprintf(out, "\te_phoff: %jd\n", (intmax_t)phoff); 636 fprintf(out, "\te_shoff: %jd\n", (intmax_t)shoff); 637 fprintf(out, "\te_flags: %jd\n", (intmax_t)flags); 638 fprintf(out, "\te_ehsize: %jd\n", (intmax_t)ehsize); 639 fprintf(out, "\te_phentsize: %jd\n", (intmax_t)phentsize); 640 fprintf(out, "\te_phnum: %jd\n", (intmax_t)phnum); 641 fprintf(out, "\te_shentsize: %jd\n", (intmax_t)shentsize); 642 if (sh != NULL) { 643 shnum = elf_get_shnum(e, sh); 644 shstrndx = elf_get_shstrndx(e, sh); 645 fprintf(out, "\te_shnum: %jd\n", (intmax_t)shnum); 646 fprintf(out, "\te_shstrndx: %jd\n", (intmax_t)shstrndx); 647 } 648 } 649 650 static void 651 elf_print_phdr(Elf32_Ehdr *e, void *p) 652 { 653 u_int64_t phentsize; 654 u_int64_t phnum; 655 u_int64_t type; 656 u_int64_t offset; 657 u_int64_t vaddr; 658 u_int64_t paddr; 659 u_int64_t filesz; 660 u_int64_t memsz; 661 u_int64_t flags; 662 u_int64_t align; 663 void *v; 664 int i; 665 666 phentsize = elf_get_quarter(e, e, E_PHENTSIZE); 667 phnum = elf_get_quarter(e, e, E_PHNUM); 668 fprintf(out, "\nprogram header:\n"); 669 for (i = 0; (u_int64_t)i < phnum; i++) { 670 v = (char *)p + i * phentsize; 671 type = elf_get_word(e, v, P_TYPE); 672 offset = elf_get_off(e, v, P_OFFSET); 673 vaddr = elf_get_addr(e, v, P_VADDR); 674 paddr = elf_get_addr(e, v, P_PADDR); 675 filesz = elf_get_size(e, v, P_FILESZ); 676 memsz = elf_get_size(e, v, P_MEMSZ); 677 flags = elf_get_word(e, v, P_FLAGS); 678 align = elf_get_size(e, v, P_ALIGN); 679 fprintf(out, "\n"); 680 fprintf(out, "entry: %d\n", i); 681 fprintf(out, "\tp_type: %s\n", p_types[type & 0x7]); 682 fprintf(out, "\tp_offset: %jd\n", (intmax_t)offset); 683 fprintf(out, "\tp_vaddr: %#jx\n", (intmax_t)vaddr); 684 fprintf(out, "\tp_paddr: %#jx\n", (intmax_t)paddr); 685 fprintf(out, "\tp_filesz: %jd\n", (intmax_t)filesz); 686 fprintf(out, "\tp_memsz: %jd\n", (intmax_t)memsz); 687 fprintf(out, "\tp_flags: %s\n", p_flags[flags]); 688 fprintf(out, "\tp_align: %jd\n", (intmax_t)align); 689 } 690 } 691 692 static void 693 elf_print_shdr(Elf32_Ehdr *e, void *sh) 694 { 695 u_int64_t shentsize; 696 u_int64_t shnum; 697 u_int64_t name; 698 u_int64_t type; 699 u_int64_t flags; 700 u_int64_t addr; 701 u_int64_t offset; 702 u_int64_t size; 703 u_int64_t shlink; 704 u_int64_t info; 705 u_int64_t addralign; 706 u_int64_t entsize; 707 void *v; 708 int i; 709 710 if (sh == NULL) { 711 fprintf(out, "\nNo section headers\n"); 712 return; 713 } 714 715 shentsize = elf_get_quarter(e, e, E_SHENTSIZE); 716 shnum = elf_get_shnum(e, sh); 717 fprintf(out, "\nsection header:\n"); 718 for (i = 0; (u_int64_t)i < shnum; i++) { 719 v = (char *)sh + i * shentsize; 720 name = elf_get_word(e, v, SH_NAME); 721 type = elf_get_word(e, v, SH_TYPE); 722 flags = elf_get_word(e, v, SH_FLAGS); 723 addr = elf_get_addr(e, v, SH_ADDR); 724 offset = elf_get_off(e, v, SH_OFFSET); 725 size = elf_get_size(e, v, SH_SIZE); 726 shlink = elf_get_word(e, v, SH_LINK); 727 info = elf_get_word(e, v, SH_INFO); 728 addralign = elf_get_size(e, v, SH_ADDRALIGN); 729 entsize = elf_get_size(e, v, SH_ENTSIZE); 730 fprintf(out, "\n"); 731 fprintf(out, "entry: %d\n", i); 732 fprintf(out, "\tsh_name: %s\n", shstrtab + name); 733 fprintf(out, "\tsh_type: %s\n", sh_types(type)); 734 fprintf(out, "\tsh_flags: %s\n", sh_flags[flags & 0x7]); 735 fprintf(out, "\tsh_addr: %#jx\n", addr); 736 fprintf(out, "\tsh_offset: %jd\n", (intmax_t)offset); 737 fprintf(out, "\tsh_size: %jd\n", (intmax_t)size); 738 fprintf(out, "\tsh_link: %jd\n", (intmax_t)shlink); 739 fprintf(out, "\tsh_info: %jd\n", (intmax_t)info); 740 fprintf(out, "\tsh_addralign: %jd\n", (intmax_t)addralign); 741 fprintf(out, "\tsh_entsize: %jd\n", (intmax_t)entsize); 742 } 743 } 744 745 static void 746 elf_print_symtab(Elf32_Ehdr *e, void *sh, char *str) 747 { 748 u_int64_t offset; 749 u_int64_t entsize; 750 u_int64_t size; 751 u_int64_t name; 752 u_int64_t value; 753 u_int64_t info; 754 u_int64_t shndx; 755 void *st; 756 int len; 757 int i; 758 759 offset = elf_get_off(e, sh, SH_OFFSET); 760 entsize = elf_get_size(e, sh, SH_ENTSIZE); 761 size = elf_get_size(e, sh, SH_SIZE); 762 name = elf_get_word(e, sh, SH_NAME); 763 len = size / entsize; 764 fprintf(out, "\nsymbol table (%s):\n", shstrtab + name); 765 for (i = 0; i < len; i++) { 766 st = (char *)e + offset + i * entsize; 767 name = elf_get_word(e, st, ST_NAME); 768 value = elf_get_addr(e, st, ST_VALUE); 769 size = elf_get_size(e, st, ST_SIZE); 770 info = elf_get_byte(e, st, ST_INFO); 771 shndx = elf_get_quarter(e, st, ST_SHNDX); 772 fprintf(out, "\n"); 773 fprintf(out, "entry: %d\n", i); 774 fprintf(out, "\tst_name: %s\n", str + name); 775 fprintf(out, "\tst_value: %#jx\n", value); 776 fprintf(out, "\tst_size: %jd\n", (intmax_t)size); 777 fprintf(out, "\tst_info: %s %s\n", 778 st_types[ELF32_ST_TYPE(info)], 779 st_bindings[ELF32_ST_BIND(info)]); 780 fprintf(out, "\tst_shndx: %jd\n", (intmax_t)shndx); 781 } 782 } 783 784 static void 785 elf_print_dynamic(Elf32_Ehdr *e, void *sh) 786 { 787 u_int64_t offset; 788 u_int64_t entsize; 789 u_int64_t size; 790 int64_t tag; 791 u_int64_t ptr; 792 u_int64_t val; 793 void *d; 794 int i; 795 796 offset = elf_get_off(e, sh, SH_OFFSET); 797 entsize = elf_get_size(e, sh, SH_ENTSIZE); 798 size = elf_get_size(e, sh, SH_SIZE); 799 fprintf(out, "\ndynamic:\n"); 800 for (i = 0; (u_int64_t)i < size / entsize; i++) { 801 d = (char *)e + offset + i * entsize; 802 tag = elf_get_size(e, d, D_TAG); 803 ptr = elf_get_size(e, d, D_PTR); 804 val = elf_get_addr(e, d, D_VAL); 805 fprintf(out, "\n"); 806 fprintf(out, "entry: %d\n", i); 807 fprintf(out, "\td_tag: %s\n", d_tags(tag)); 808 switch (tag) { 809 case DT_NEEDED: 810 case DT_SONAME: 811 case DT_RPATH: 812 fprintf(out, "\td_val: %s\n", dynstr + val); 813 break; 814 case DT_PLTRELSZ: 815 case DT_RELA: 816 case DT_RELASZ: 817 case DT_RELAENT: 818 case DT_STRSZ: 819 case DT_SYMENT: 820 case DT_RELSZ: 821 case DT_RELENT: 822 case DT_PLTREL: 823 fprintf(out, "\td_val: %jd\n", (intmax_t)val); 824 break; 825 case DT_PLTGOT: 826 case DT_HASH: 827 case DT_STRTAB: 828 case DT_SYMTAB: 829 case DT_INIT: 830 case DT_FINI: 831 case DT_REL: 832 case DT_JMPREL: 833 fprintf(out, "\td_ptr: %#jx\n", ptr); 834 break; 835 case DT_NULL: 836 case DT_SYMBOLIC: 837 case DT_DEBUG: 838 case DT_TEXTREL: 839 break; 840 } 841 } 842 } 843 844 static void 845 elf_print_rela(Elf32_Ehdr *e, void *sh) 846 { 847 u_int64_t offset; 848 u_int64_t entsize; 849 u_int64_t size; 850 u_int64_t name; 851 u_int64_t info; 852 int64_t addend; 853 void *ra; 854 void *v; 855 int i; 856 857 offset = elf_get_off(e, sh, SH_OFFSET); 858 entsize = elf_get_size(e, sh, SH_ENTSIZE); 859 size = elf_get_size(e, sh, SH_SIZE); 860 name = elf_get_word(e, sh, SH_NAME); 861 v = (char *)e + offset; 862 fprintf(out, "\nrelocation with addend (%s):\n", shstrtab + name); 863 for (i = 0; (u_int64_t)i < size / entsize; i++) { 864 ra = (char *)v + i * entsize; 865 offset = elf_get_addr(e, ra, RA_OFFSET); 866 info = elf_get_word(e, ra, RA_INFO); 867 addend = elf_get_off(e, ra, RA_ADDEND); 868 fprintf(out, "\n"); 869 fprintf(out, "entry: %d\n", i); 870 fprintf(out, "\tr_offset: %#jx\n", offset); 871 fprintf(out, "\tr_info: %jd\n", (intmax_t)info); 872 fprintf(out, "\tr_addend: %jd\n", (intmax_t)addend); 873 } 874 } 875 876 static void 877 elf_print_rel(Elf32_Ehdr *e, void *sh) 878 { 879 u_int64_t offset; 880 u_int64_t entsize; 881 u_int64_t size; 882 u_int64_t name; 883 u_int64_t info; 884 void *r; 885 void *v; 886 int i; 887 888 offset = elf_get_off(e, sh, SH_OFFSET); 889 entsize = elf_get_size(e, sh, SH_ENTSIZE); 890 size = elf_get_size(e, sh, SH_SIZE); 891 name = elf_get_word(e, sh, SH_NAME); 892 v = (char *)e + offset; 893 fprintf(out, "\nrelocation (%s):\n", shstrtab + name); 894 for (i = 0; (u_int64_t)i < size / entsize; i++) { 895 r = (char *)v + i * entsize; 896 offset = elf_get_addr(e, r, R_OFFSET); 897 info = elf_get_word(e, r, R_INFO); 898 fprintf(out, "\n"); 899 fprintf(out, "entry: %d\n", i); 900 fprintf(out, "\tr_offset: %#jx\n", offset); 901 fprintf(out, "\tr_info: %jd\n", (intmax_t)info); 902 } 903 } 904 905 static void 906 elf_print_interp(Elf32_Ehdr *e, void *p) 907 { 908 u_int64_t offset; 909 char *s; 910 911 offset = elf_get_off(e, p, P_OFFSET); 912 s = (char *)e + offset; 913 fprintf(out, "\ninterp:\n"); 914 fprintf(out, "\t%s\n", s); 915 } 916 917 static void 918 elf_print_got(Elf32_Ehdr *e, void *sh) 919 { 920 u_int64_t offset; 921 u_int64_t addralign; 922 u_int64_t size; 923 u_int64_t addr; 924 void *v; 925 int i; 926 927 offset = elf_get_off(e, sh, SH_OFFSET); 928 addralign = elf_get_size(e, sh, SH_ADDRALIGN); 929 size = elf_get_size(e, sh, SH_SIZE); 930 v = (char *)e + offset; 931 fprintf(out, "\nglobal offset table:\n"); 932 for (i = 0; (u_int64_t)i < size / addralign; i++) { 933 addr = elf_get_addr(e, (char *)v + i * addralign, 0); 934 fprintf(out, "\n"); 935 fprintf(out, "entry: %d\n", i); 936 fprintf(out, "\t%#jx\n", addr); 937 } 938 } 939 940 static void 941 elf_print_hash(Elf32_Ehdr *e __unused, void *sh __unused) 942 { 943 } 944 945 static void 946 elf_print_note(Elf32_Ehdr *e, void *sh) 947 { 948 u_int64_t offset; 949 u_int64_t size; 950 u_int64_t name; 951 u_int32_t namesz; 952 u_int32_t descsz; 953 u_int32_t desc; 954 char *n, *s; 955 956 offset = elf_get_off(e, sh, SH_OFFSET); 957 size = elf_get_size(e, sh, SH_SIZE); 958 name = elf_get_word(e, sh, SH_NAME); 959 n = (char *)e + offset; 960 fprintf(out, "\nnote (%s):\n", shstrtab + name); 961 while (n < ((char *)e + offset + size)) { 962 namesz = elf_get_word(e, n, N_NAMESZ); 963 descsz = elf_get_word(e, n, N_DESCSZ); 964 s = n + sizeof(Elf_Note); 965 desc = elf_get_word(e, n + sizeof(Elf_Note) + namesz, 0); 966 fprintf(out, "\t%s %d\n", s, desc); 967 n += sizeof(Elf_Note) + namesz + descsz; 968 } 969 } 970 971 static u_int64_t 972 elf_get_byte(Elf32_Ehdr *e, void *base, elf_member_t member) 973 { 974 u_int64_t val; 975 976 val = 0; 977 switch (e->e_ident[EI_CLASS]) { 978 case ELFCLASS32: 979 val = ((uint8_t *)base)[elf32_offsets[member]]; 980 break; 981 case ELFCLASS64: 982 val = ((uint8_t *)base)[elf64_offsets[member]]; 983 break; 984 case ELFCLASSNONE: 985 errx(1, "invalid class"); 986 } 987 988 return val; 989 } 990 991 static u_int64_t 992 elf_get_quarter(Elf32_Ehdr *e, void *base, elf_member_t member) 993 { 994 u_int64_t val; 995 996 val = 0; 997 switch (e->e_ident[EI_CLASS]) { 998 case ELFCLASS32: 999 base = (char *)base + elf32_offsets[member]; 1000 switch (e->e_ident[EI_DATA]) { 1001 case ELFDATA2MSB: 1002 val = be16dec(base); 1003 break; 1004 case ELFDATA2LSB: 1005 val = le16dec(base); 1006 break; 1007 case ELFDATANONE: 1008 errx(1, "invalid data format"); 1009 } 1010 break; 1011 case ELFCLASS64: 1012 base = (char *)base + elf64_offsets[member]; 1013 switch (e->e_ident[EI_DATA]) { 1014 case ELFDATA2MSB: 1015 val = be16dec(base); 1016 break; 1017 case ELFDATA2LSB: 1018 val = le16dec(base); 1019 break; 1020 case ELFDATANONE: 1021 errx(1, "invalid data format"); 1022 } 1023 break; 1024 case ELFCLASSNONE: 1025 errx(1, "invalid class"); 1026 } 1027 1028 return val; 1029 } 1030 1031 #if 0 1032 static u_int64_t 1033 elf_get_half(Elf32_Ehdr *e, void *base, elf_member_t member) 1034 { 1035 u_int64_t val; 1036 1037 val = 0; 1038 switch (e->e_ident[EI_CLASS]) { 1039 case ELFCLASS32: 1040 base = (char *)base + elf32_offsets[member]; 1041 switch (e->e_ident[EI_DATA]) { 1042 case ELFDATA2MSB: 1043 val = be16dec(base); 1044 break; 1045 case ELFDATA2LSB: 1046 val = le16dec(base); 1047 break; 1048 case ELFDATANONE: 1049 errx(1, "invalid data format"); 1050 } 1051 break; 1052 case ELFCLASS64: 1053 base = (char *)base + elf64_offsets[member]; 1054 switch (e->e_ident[EI_DATA]) { 1055 case ELFDATA2MSB: 1056 val = be32dec(base); 1057 break; 1058 case ELFDATA2LSB: 1059 val = le32dec(base); 1060 break; 1061 case ELFDATANONE: 1062 errx(1, "invalid data format"); 1063 } 1064 break; 1065 case ELFCLASSNONE: 1066 errx(1, "invalid class"); 1067 } 1068 1069 return val; 1070 } 1071 #endif 1072 1073 static u_int64_t 1074 elf_get_word(Elf32_Ehdr *e, void *base, elf_member_t member) 1075 { 1076 u_int64_t val; 1077 1078 val = 0; 1079 switch (e->e_ident[EI_CLASS]) { 1080 case ELFCLASS32: 1081 base = (char *)base + elf32_offsets[member]; 1082 switch (e->e_ident[EI_DATA]) { 1083 case ELFDATA2MSB: 1084 val = be32dec(base); 1085 break; 1086 case ELFDATA2LSB: 1087 val = le32dec(base); 1088 break; 1089 case ELFDATANONE: 1090 errx(1, "invalid data format"); 1091 } 1092 break; 1093 case ELFCLASS64: 1094 base = (char *)base + elf64_offsets[member]; 1095 switch (e->e_ident[EI_DATA]) { 1096 case ELFDATA2MSB: 1097 val = be32dec(base); 1098 break; 1099 case ELFDATA2LSB: 1100 val = le32dec(base); 1101 break; 1102 case ELFDATANONE: 1103 errx(1, "invalid data format"); 1104 } 1105 break; 1106 case ELFCLASSNONE: 1107 errx(1, "invalid class"); 1108 } 1109 1110 return val; 1111 } 1112 1113 static u_int64_t 1114 elf_get_quad(Elf32_Ehdr *e, void *base, elf_member_t member) 1115 { 1116 u_int64_t val; 1117 1118 val = 0; 1119 switch (e->e_ident[EI_CLASS]) { 1120 case ELFCLASS32: 1121 base = (char *)base + elf32_offsets[member]; 1122 switch (e->e_ident[EI_DATA]) { 1123 case ELFDATA2MSB: 1124 val = be32dec(base); 1125 break; 1126 case ELFDATA2LSB: 1127 val = le32dec(base); 1128 break; 1129 case ELFDATANONE: 1130 errx(1, "invalid data format"); 1131 } 1132 break; 1133 case ELFCLASS64: 1134 base = (char *)base + elf64_offsets[member]; 1135 switch (e->e_ident[EI_DATA]) { 1136 case ELFDATA2MSB: 1137 val = be64dec(base); 1138 break; 1139 case ELFDATA2LSB: 1140 val = le64dec(base); 1141 break; 1142 case ELFDATANONE: 1143 errx(1, "invalid data format"); 1144 } 1145 break; 1146 case ELFCLASSNONE: 1147 errx(1, "invalid class"); 1148 } 1149 1150 return val; 1151 } 1152 1153 static void 1154 usage(void) 1155 { 1156 fprintf(stderr, "usage: elfdump -a | -cdeGhinprs [-w file] file\n"); 1157 exit(1); 1158 } 1159