elfdump.c revision 110257
1109313Sobrien/*- 2110252Sobrien * Copyright (c) 2003 David O'Brien. All rights reserved. 3109313Sobrien * Copyright (c) 2001 Jake Burkholder 4109313Sobrien * All rights reserved. 5109313Sobrien * 6109313Sobrien * Redistribution and use in source and binary forms, with or without 7109313Sobrien * modification, are permitted provided that the following conditions 8109313Sobrien * are met: 9109313Sobrien * 1. Redistributions of source code must retain the above copyright 10109313Sobrien * notice, this list of conditions and the following disclaimer. 11109313Sobrien * 2. Redistributions in binary form must reproduce the above copyright 12109313Sobrien * notice, this list of conditions and the following disclaimer in the 13109313Sobrien * documentation and/or other materials provided with the distribution. 14109313Sobrien * 15109313Sobrien * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16109313Sobrien * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17109313Sobrien * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18109313Sobrien * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19109313Sobrien * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20109313Sobrien * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21109313Sobrien * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22109313Sobrien * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23109313Sobrien * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24109313Sobrien * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25109313Sobrien * SUCH DAMAGE. 26109313Sobrien */ 27109313Sobrien 28109313Sobrien#include <sys/cdefs.h> 29109313Sobrien__FBSDID("$FreeBSD: head/usr.bin/elfdump/elfdump.c 110257 2003-02-03 01:30:47Z obrien $"); 30109313Sobrien 31109313Sobrien#include <sys/types.h> 32109313Sobrien#include <sys/elf32.h> 33109313Sobrien#include <sys/elf64.h> 34109313Sobrien#include <sys/mman.h> 35109313Sobrien#include <sys/stat.h> 36109313Sobrien#include <err.h> 37109313Sobrien#include <fcntl.h> 38110257Sobrien#include <inttypes.h> 39109313Sobrien#include <stddef.h> 40109313Sobrien#include <stdio.h> 41109313Sobrien#include <stdlib.h> 42109313Sobrien#include <string.h> 43109313Sobrien#include <unistd.h> 44109313Sobrien 45109313Sobrien#define ED_DYN (1<<0) 46109313Sobrien#define ED_EHDR (1<<1) 47109313Sobrien#define ED_GOT (1<<2) 48109313Sobrien#define ED_HASH (1<<3) 49109313Sobrien#define ED_INTERP (1<<4) 50109313Sobrien#define ED_NOTE (1<<5) 51109313Sobrien#define ED_PHDR (1<<6) 52109313Sobrien#define ED_REL (1<<7) 53109313Sobrien#define ED_SHDR (1<<8) 54109313Sobrien#define ED_SYMTAB (1<<9) 55109313Sobrien#define ED_ALL ((1<<10)-1) 56109313Sobrien 57109313Sobrien#define elf_get_addr elf_get_quad 58109313Sobrien#define elf_get_off elf_get_quad 59109313Sobrien#define elf_get_size elf_get_quad 60109313Sobrien 61109313Sobrienenum elf_member { 62109313Sobrien D_TAG = 1, D_PTR, D_VAL, 63109313Sobrien 64109313Sobrien E_CLASS, E_DATA, E_OSABI, E_TYPE, E_MACHINE, E_VERSION, E_ENTRY, 65109313Sobrien E_PHOFF, E_SHOFF, E_FLAGS, E_EHSIZE, E_PHENTSIZE, E_PHNUM, E_SHENTSIZE, 66109313Sobrien E_SHNUM, E_SHSTRNDX, 67109313Sobrien 68109313Sobrien N_NAMESZ, N_DESCSZ, N_TYPE, 69109313Sobrien 70109313Sobrien P_TYPE, P_OFFSET, P_VADDR, P_PADDR, P_FILESZ, P_MEMSZ, P_FLAGS, 71109313Sobrien P_ALIGN, 72109313Sobrien 73109313Sobrien SH_NAME, SH_TYPE, SH_FLAGS, SH_ADDR, SH_OFFSET, SH_SIZE, SH_LINK, 74109313Sobrien SH_INFO, SH_ADDRALIGN, SH_ENTSIZE, 75109313Sobrien 76109313Sobrien ST_NAME, ST_VALUE, ST_SIZE, ST_INFO, ST_SHNDX, 77109313Sobrien 78109313Sobrien R_OFFSET, R_INFO, 79109313Sobrien 80109313Sobrien RA_OFFSET, RA_INFO, RA_ADDEND 81109313Sobrien}; 82109313Sobrien 83109313Sobrientypedef enum elf_member elf_member_t; 84109313Sobrien 85109313Sobrienint elf32_offsets[] = { 86109313Sobrien 0, 87109313Sobrien 88109313Sobrien offsetof(Elf32_Dyn, d_tag), offsetof(Elf32_Dyn, d_un.d_ptr), 89109313Sobrien offsetof(Elf32_Dyn, d_un.d_val), 90109313Sobrien 91109313Sobrien offsetof(Elf32_Ehdr, e_ident[EI_CLASS]), 92109313Sobrien offsetof(Elf32_Ehdr, e_ident[EI_DATA]), 93109313Sobrien offsetof(Elf32_Ehdr, e_ident[EI_OSABI]), 94109313Sobrien offsetof(Elf32_Ehdr, e_type), offsetof(Elf32_Ehdr, e_machine), 95109313Sobrien offsetof(Elf32_Ehdr, e_version), offsetof(Elf32_Ehdr, e_entry), 96109313Sobrien offsetof(Elf32_Ehdr, e_phoff), offsetof(Elf32_Ehdr, e_shoff), 97109313Sobrien offsetof(Elf32_Ehdr, e_flags), offsetof(Elf32_Ehdr, e_ehsize), 98109313Sobrien offsetof(Elf32_Ehdr, e_phentsize), offsetof(Elf32_Ehdr, e_phnum), 99109313Sobrien offsetof(Elf32_Ehdr, e_shentsize), offsetof(Elf32_Ehdr, e_shnum), 100109313Sobrien offsetof(Elf32_Ehdr, e_shstrndx), 101109313Sobrien 102109313Sobrien offsetof(Elf_Note, n_namesz), offsetof(Elf_Note, n_descsz), 103109313Sobrien offsetof(Elf_Note, n_type), 104109313Sobrien 105109313Sobrien offsetof(Elf32_Phdr, p_type), offsetof(Elf32_Phdr, p_offset), 106109313Sobrien offsetof(Elf32_Phdr, p_vaddr), offsetof(Elf32_Phdr, p_paddr), 107109313Sobrien offsetof(Elf32_Phdr, p_filesz), offsetof(Elf32_Phdr, p_memsz), 108109313Sobrien offsetof(Elf32_Phdr, p_flags), offsetof(Elf32_Phdr, p_align), 109109313Sobrien 110109313Sobrien offsetof(Elf32_Shdr, sh_name), offsetof(Elf32_Shdr, sh_type), 111109313Sobrien offsetof(Elf32_Shdr, sh_flags), offsetof(Elf32_Shdr, sh_addr), 112109313Sobrien offsetof(Elf32_Shdr, sh_offset), offsetof(Elf32_Shdr, sh_size), 113109313Sobrien offsetof(Elf32_Shdr, sh_link), offsetof(Elf32_Shdr, sh_info), 114109313Sobrien offsetof(Elf32_Shdr, sh_addralign), offsetof(Elf32_Shdr, sh_entsize), 115109313Sobrien 116109313Sobrien offsetof(Elf32_Sym, st_name), offsetof(Elf32_Sym, st_value), 117109313Sobrien offsetof(Elf32_Sym, st_size), offsetof(Elf32_Sym, st_info), 118109313Sobrien offsetof(Elf32_Sym, st_shndx), 119109313Sobrien 120109313Sobrien offsetof(Elf32_Rel, r_offset), offsetof(Elf32_Rel, r_info), 121109313Sobrien 122109313Sobrien offsetof(Elf32_Rela, r_offset), offsetof(Elf32_Rela, r_info), 123109313Sobrien offsetof(Elf32_Rela, r_addend) 124109313Sobrien}; 125109313Sobrien 126109313Sobrienint elf64_offsets[] = { 127109313Sobrien 0, 128109313Sobrien 129109313Sobrien offsetof(Elf64_Dyn, d_tag), offsetof(Elf64_Dyn, d_un.d_ptr), 130109313Sobrien offsetof(Elf64_Dyn, d_un.d_val), 131109313Sobrien 132109313Sobrien offsetof(Elf32_Ehdr, e_ident[EI_CLASS]), 133109313Sobrien offsetof(Elf32_Ehdr, e_ident[EI_DATA]), 134109313Sobrien offsetof(Elf32_Ehdr, e_ident[EI_OSABI]), 135109313Sobrien offsetof(Elf64_Ehdr, e_type), offsetof(Elf64_Ehdr, e_machine), 136109313Sobrien offsetof(Elf64_Ehdr, e_version), offsetof(Elf64_Ehdr, e_entry), 137109313Sobrien offsetof(Elf64_Ehdr, e_phoff), offsetof(Elf64_Ehdr, e_shoff), 138109313Sobrien offsetof(Elf64_Ehdr, e_flags), offsetof(Elf64_Ehdr, e_ehsize), 139109313Sobrien offsetof(Elf64_Ehdr, e_phentsize), offsetof(Elf64_Ehdr, e_phnum), 140109313Sobrien offsetof(Elf64_Ehdr, e_shentsize), offsetof(Elf64_Ehdr, e_shnum), 141109313Sobrien offsetof(Elf64_Ehdr, e_shstrndx), 142109313Sobrien 143109313Sobrien offsetof(Elf_Note, n_namesz), offsetof(Elf_Note, n_descsz), 144109313Sobrien offsetof(Elf_Note, n_type), 145109313Sobrien 146109313Sobrien offsetof(Elf64_Phdr, p_type), offsetof(Elf64_Phdr, p_offset), 147109313Sobrien offsetof(Elf64_Phdr, p_vaddr), offsetof(Elf64_Phdr, p_paddr), 148109313Sobrien offsetof(Elf64_Phdr, p_filesz), offsetof(Elf64_Phdr, p_memsz), 149109313Sobrien offsetof(Elf64_Phdr, p_flags), offsetof(Elf64_Phdr, p_align), 150109313Sobrien 151109313Sobrien offsetof(Elf64_Shdr, sh_name), offsetof(Elf64_Shdr, sh_type), 152109313Sobrien offsetof(Elf64_Shdr, sh_flags), offsetof(Elf64_Shdr, sh_addr), 153109313Sobrien offsetof(Elf64_Shdr, sh_offset), offsetof(Elf64_Shdr, sh_size), 154109313Sobrien offsetof(Elf64_Shdr, sh_link), offsetof(Elf64_Shdr, sh_info), 155109313Sobrien offsetof(Elf64_Shdr, sh_addralign), offsetof(Elf64_Shdr, sh_entsize), 156109313Sobrien 157109313Sobrien offsetof(Elf64_Sym, st_name), offsetof(Elf64_Sym, st_value), 158109313Sobrien offsetof(Elf64_Sym, st_size), offsetof(Elf64_Sym, st_info), 159109313Sobrien offsetof(Elf64_Sym, st_shndx), 160109313Sobrien 161109313Sobrien offsetof(Elf64_Rel, r_offset), offsetof(Elf64_Rel, r_info), 162109313Sobrien 163109313Sobrien offsetof(Elf64_Rela, r_offset), offsetof(Elf64_Rela, r_info), 164109313Sobrien offsetof(Elf64_Rela, r_addend) 165109313Sobrien}; 166109313Sobrien 167109332Sobrien/* http://www.sco.com/developers/gabi/latest/ch5.dynamic.html#tag_encodings */ 168110256Sobrienstatic const char * 169109332Sobriend_tags(u_int64_t tag) { 170109332Sobrien switch (tag) { 171109332Sobrien case 0: return "DT_NULL"; 172109332Sobrien case 1: return "DT_NEEDED"; 173109332Sobrien case 2: return "DT_PLTRELSZ"; 174109332Sobrien case 3: return "DT_PLTGOT"; 175109332Sobrien case 4: return "DT_HASH"; 176109332Sobrien case 5: return "DT_STRTAB"; 177109332Sobrien case 6: return "DT_SYMTAB"; 178109332Sobrien case 7: return "DT_RELA"; 179109332Sobrien case 8: return "DT_RELASZ"; 180109332Sobrien case 9: return "DT_RELAENT"; 181109332Sobrien case 10: return "DT_STRSZ"; 182109332Sobrien case 11: return "DT_SYMENT"; 183109332Sobrien case 12: return "DT_INIT"; 184109332Sobrien case 13: return "DT_FINI"; 185109332Sobrien case 14: return "DT_SONAME"; 186109332Sobrien case 15: return "DT_RPATH"; 187109332Sobrien case 16: return "DT_SYMBOLIC"; 188109332Sobrien case 17: return "DT_REL"; 189109332Sobrien case 18: return "DT_RELSZ"; 190109332Sobrien case 19: return "DT_RELENT"; 191109332Sobrien case 20: return "DT_PLTREL"; 192109332Sobrien case 21: return "DT_DEBUG"; 193109332Sobrien case 22: return "DT_TEXTREL"; 194109332Sobrien case 23: return "DT_JMPREL"; 195109332Sobrien case 24: return "DT_BIND_NOW"; 196109332Sobrien case 25: return "DT_INIT_ARRAY"; 197109332Sobrien case 26: return "DT_FINI_ARRAY"; 198109332Sobrien case 27: return "DT_INIT_ARRAYSZ"; 199109332Sobrien case 28: return "DT_FINI_ARRAYSZ"; 200109332Sobrien case 29: return "DT_RUNPATH"; 201109332Sobrien case 30: return "DT_FLAGS"; 202109332Sobrien case 32: return "DT_PREINIT_ARRAY"; /* XXX: DT_ENCODING */ 203109332Sobrien case 33: return "DT_PREINIT_ARRAYSZ"; 204109332Sobrien /* 0x6000000D - 0x6ffff000 operating system-specific semantics */ 205109332Sobrien case 0x6ffffdf5: return "DT_GNU_PRELINKED"; 206109332Sobrien case 0x6ffffdf6: return "DT_GNU_CONFLICTSZ"; 207109332Sobrien case 0x6ffffdf7: return "DT_GNU_LIBLISTSZ"; 208109332Sobrien case 0x6ffffdf8: return "DT_SUNW_CHECKSUM"; 209109332Sobrien case 0x6ffffdf9: return "DT_PLTPADSZ"; 210109332Sobrien case 0x6ffffdfa: return "DT_MOVEENT"; 211109332Sobrien case 0x6ffffdfb: return "DT_MOVESZ"; 212109332Sobrien case 0x6ffffdfc: return "DT_FEATURE"; 213109332Sobrien case 0x6ffffdfd: return "DT_POSFLAG_1"; 214109332Sobrien case 0x6ffffdfe: return "DT_SYMINSZ"; 215109332Sobrien case 0x6ffffdff: return "DT_SYMINENT (DT_VALRNGHI)"; 216109332Sobrien case 0x6ffffe00: return "DT_ADDRRNGLO"; 217109332Sobrien case 0x6ffffef8: return "DT_GNU_CONFLICT"; 218109332Sobrien case 0x6ffffef9: return "DT_GNU_LIBLIST"; 219109332Sobrien case 0x6ffffefa: return "DT_SUNW_CONFIG"; 220109332Sobrien case 0x6ffffefb: return "DT_SUNW_DEPAUDIT"; 221109332Sobrien case 0x6ffffefc: return "DT_SUNW_AUDIT"; 222109332Sobrien case 0x6ffffefd: return "DT_SUNW_PLTPAD"; 223109332Sobrien case 0x6ffffefe: return "DT_SUNW_MOVETAB"; 224109332Sobrien case 0x6ffffeff: return "DT_SYMINFO (DT_ADDRRNGHI)"; 225109332Sobrien case 0x6ffffff9: return "DT_RELACOUNT"; 226109332Sobrien case 0x6ffffffa: return "DT_RELCOUNT"; 227109332Sobrien case 0x6ffffffb: return "DT_FLAGS_1"; 228109332Sobrien case 0x6ffffffc: return "DT_VERDEF"; 229109332Sobrien case 0x6ffffffd: return "DT_VERDEFNUM"; 230109332Sobrien case 0x6ffffffe: return "DT_VERNEED"; 231109332Sobrien case 0x6fffffff: return "DT_VERNEEDNUM"; 232109332Sobrien case 0x6ffffff0: return "DT_GNU_VERSYM"; 233109332Sobrien /* 0x70000000 - 0x7fffffff processor-specific semantics */ 234109457Smarcel case 0x70000000: return "DT_IA64_PLT_RESERVE"; 235109332Sobrien case 0x7ffffffd: return "DT_SUNW_AUXILIARY"; 236109332Sobrien case 0x7ffffffe: return "DT_SUNW_USED"; 237109332Sobrien case 0x7fffffff: return "DT_SUNW_FILTER"; 238109332Sobrien default: return "ERROR: TAG NOT DEFINED"; 239109332Sobrien } 240109313Sobrien}; 241109313Sobrien 242110256Sobrienstatic const char * 243109457Smarcele_machines(u_int mach) 244109457Smarcel{ 245109457Smarcel switch (mach) { 246109457Smarcel case EM_NONE: return "EM_NONE"; 247109457Smarcel case EM_M32: return "EM_M32"; 248109457Smarcel case EM_SPARC: return "EM_SPARC"; 249109457Smarcel case EM_386: return "EM_386"; 250109457Smarcel case EM_68K: return "EM_68K"; 251109457Smarcel case EM_88K: return "EM_88K"; 252109457Smarcel case EM_486: return "EM_486"; 253109457Smarcel case EM_860: return "EM_860"; 254109457Smarcel case EM_MIPS: return "EM_MIPS"; 255109457Smarcel case EM_IA_64: return "EM_IA_64"; 256109457Smarcel } 257109457Smarcel return "(unknown machine)"; 258109313Sobrien}; 259109313Sobrien 260110256Sobrienconst char *e_types[] = { 261109313Sobrien "ET_NONE", "ET_REL", "ET_EXEC", "ET_DYN", "ET_CORE" 262109313Sobrien}; 263109313Sobrien 264110256Sobrienconst char *ei_versions[] = { 265109313Sobrien "EV_NONE", "EV_CURRENT" 266109313Sobrien}; 267109313Sobrien 268110256Sobrienconst char *ei_classes[] = { 269109313Sobrien "ELFCLASSNONE", "ELFCLASS32", "ELFCLASS64" 270109313Sobrien}; 271109313Sobrien 272110256Sobrienconst char *ei_data[] = { 273109313Sobrien "ELFDATANONE", "ELFDATA2LSB", "ELFDATA2MSB" 274109313Sobrien}; 275109313Sobrien 276110256Sobrienconst char *ei_abis[] = { 277109313Sobrien "ELFOSABI_SYSV", "ELFOSABI_HPUX", "ELFOSABI_NETBSD", "ELFOSABI_LINUX", 278109313Sobrien "ELFOSABI_HURD", "ELFOSABI_86OPEN", "ELFOSABI_SOLARIS", 279109313Sobrien "ELFOSABI_MONTEREY", "ELFOSABI_IRIX", "ELFOSABI_FREEBSD", 280109313Sobrien "ELFOSABI_TRU64", "ELFOSABI_MODESTO", "ELFOSABI_OPENBSD" 281109313Sobrien}; 282109313Sobrien 283110256Sobrienconst char *p_types[] = { 284109313Sobrien "PT_NULL", "PT_LOAD", "PT_DYNAMIC", "PT_INTERP", "PT_NOTE", 285109313Sobrien "PT_SHLIB", "PT_PHDR" 286109313Sobrien}; 287109313Sobrien 288110256Sobrienconst char *p_flags[] = { 289109313Sobrien "", "PF_X", "PF_W", "PF_X|PF_W", "PF_R", "PF_X|PF_R", "PF_W|PF_R", 290109313Sobrien "PF_X|PF_W|PF_R" 291109313Sobrien}; 292109313Sobrien 293109329Sobrien/* http://www.sco.com/developers/gabi/latest/ch4.sheader.html#sh_type */ 294110256Sobrienstatic const char * 295109332Sobriensh_types(u_int64_t sht) { 296109329Sobrien switch (sht) { 297109329Sobrien case 0: return "SHT_NULL"; 298109329Sobrien case 1: return "SHT_PROGBITS"; 299109329Sobrien case 2: return "SHT_SYMTAB"; 300109329Sobrien case 3: return "SHT_STRTAB"; 301109329Sobrien case 4: return "SHT_RELA"; 302109329Sobrien case 5: return "SHT_HASH"; 303109329Sobrien case 6: return "SHT_DYNAMIC"; 304109329Sobrien case 7: return "SHT_NOTE"; 305109329Sobrien case 8: return "SHT_NOBITS"; 306109329Sobrien case 9: return "SHT_REL"; 307109329Sobrien case 10: return "SHT_SHLIB"; 308109329Sobrien case 11: return "SHT_DYNSYM"; 309109329Sobrien case 14: return "SHT_INIT_ARRAY"; 310109329Sobrien case 15: return "SHT_FINI_ARRAY"; 311109329Sobrien case 16: return "SHT_PREINIT_ARRAY"; 312109329Sobrien case 17: return "SHT_GROUP"; 313109329Sobrien case 18: return "SHT_SYMTAB_SHNDX"; 314109332Sobrien /* 0x60000000 - 0x6fffffff operating system-specific semantics */ 315109329Sobrien case 0x6ffffff0: return "XXX:VERSYM"; 316109329Sobrien case 0x6ffffff7: return "SHT_GNU_LIBLIST"; 317109329Sobrien case 0x6ffffffc: return "XXX:VERDEF"; 318109329Sobrien case 0x6ffffffd: return "SHT_SUNW(GNU)_verdef"; 319109329Sobrien case 0x6ffffffe: return "SHT_SUNW(GNU)_verneed"; 320109329Sobrien case 0x6fffffff: return "SHT_SUNW(GNU)_versym"; 321109332Sobrien /* 0x70000000 - 0x7fffffff processor-specific semantics */ 322109457Smarcel case 0x70000000: return "SHT_IA_64_EXT"; 323109457Smarcel case 0x70000001: return "SHT_IA_64_UNWIND"; 324109329Sobrien case 0x7ffffffd: return "XXX:AUXILIARY"; 325109329Sobrien case 0x7fffffff: return "XXX:FILTER"; 326109332Sobrien /* 0x80000000 - 0xffffffff application programs */ 327109329Sobrien default: return "ERROR: SHT NOT DEFINED"; 328109329Sobrien } 329109313Sobrien}; 330109313Sobrien 331110256Sobrienconst char *sh_flags[] = { 332109313Sobrien "", "SHF_WRITE", "SHF_ALLOC", "SHF_WRITE|SHF_ALLOC", "SHF_EXECINSTR", 333109313Sobrien "SHF_WRITE|SHF_EXECINSTR", "SHF_ALLOC|SHF_EXECINSTR", 334109313Sobrien "SHF_WRITE|SHF_ALLOC|SHF_EXECINSTR" 335109313Sobrien}; 336109313Sobrien 337110256Sobrienconst char *st_types[] = { 338109313Sobrien "STT_NOTYPE", "STT_OBJECT", "STT_FUNC", "STT_SECTION", "STT_FILE" 339109313Sobrien}; 340109313Sobrien 341110256Sobrienconst char *st_bindings[] = { 342109313Sobrien "STB_LOCAL", "STB_GLOBAL", "STB_WEAK" 343109313Sobrien}; 344109313Sobrien 345109313Sobrienchar *dynstr; 346109313Sobrienchar *shstrtab; 347109313Sobrienchar *strtab; 348109313SobrienFILE *out; 349109313Sobrien 350109313Sobrienu_int64_t elf_get_byte(Elf32_Ehdr *e, void *base, elf_member_t member); 351109313Sobrienu_int64_t elf_get_quarter(Elf32_Ehdr *e, void *base, elf_member_t member); 352109313Sobrienu_int64_t elf_get_half(Elf32_Ehdr *e, void *base, elf_member_t member); 353109313Sobrienu_int64_t elf_get_word(Elf32_Ehdr *e, void *base, elf_member_t member); 354109313Sobrienu_int64_t elf_get_quad(Elf32_Ehdr *e, void *base, elf_member_t member); 355109313Sobrien 356110252Sobrienvoid elf_print_ehdr(Elf32_Ehdr *e); 357110252Sobrienvoid elf_print_phdr(Elf32_Ehdr *e, void *p); 358110252Sobrienvoid elf_print_shdr(Elf32_Ehdr *e, void *sh); 359110252Sobrienvoid elf_print_symtab(Elf32_Ehdr *e, void *sh, char *str); 360110252Sobrienvoid elf_print_dynamic(Elf32_Ehdr *e, void *sh); 361110252Sobrienvoid elf_print_rel(Elf32_Ehdr *e, void *r); 362110252Sobrienvoid elf_print_rela(Elf32_Ehdr *e, void *ra); 363110252Sobrienvoid elf_print_interp(Elf32_Ehdr *e, void *p); 364110252Sobrienvoid elf_print_got(Elf32_Ehdr *e, void *sh); 365110252Sobrienvoid elf_print_hash(Elf32_Ehdr *e, void *sh); 366110252Sobrienvoid elf_print_note(Elf32_Ehdr *e, void *sh); 367109313Sobrien 368109313Sobrienvoid usage(void); 369109313Sobrien 370109313Sobrienint 371109313Sobrienmain(int ac, char **av) 372109313Sobrien{ 373109313Sobrien u_int64_t phoff; 374109313Sobrien u_int64_t shoff; 375109313Sobrien u_int64_t phentsize; 376109313Sobrien u_int64_t phnum; 377109313Sobrien u_int64_t shentsize; 378109313Sobrien u_int64_t shnum; 379109313Sobrien u_int64_t shstrndx; 380109313Sobrien u_int64_t offset; 381109313Sobrien u_int64_t name; 382109313Sobrien u_int64_t type; 383109313Sobrien struct stat sb; 384109313Sobrien u_int flags; 385110252Sobrien Elf32_Ehdr *e; 386109313Sobrien void *p; 387109313Sobrien void *sh; 388109313Sobrien void *v; 389109313Sobrien int fd; 390109313Sobrien int ch; 391109313Sobrien int i; 392109313Sobrien 393109313Sobrien out = stdout; 394109313Sobrien flags = 0; 395109313Sobrien while ((ch = getopt(ac, av, "acdeiGhnprsw:")) != -1) 396109313Sobrien switch (ch) { 397109313Sobrien case 'a': 398109313Sobrien flags = ED_ALL; 399109313Sobrien break; 400109313Sobrien case 'c': 401109313Sobrien flags |= ED_SHDR; 402109313Sobrien break; 403109313Sobrien case 'd': 404109313Sobrien flags |= ED_DYN; 405109313Sobrien break; 406109313Sobrien case 'e': 407109313Sobrien flags |= ED_EHDR; 408109313Sobrien break; 409109313Sobrien case 'i': 410109313Sobrien flags |= ED_INTERP; 411109313Sobrien break; 412109313Sobrien case 'G': 413109313Sobrien flags |= ED_GOT; 414109313Sobrien break; 415109313Sobrien case 'h': 416109313Sobrien flags |= ED_HASH; 417109313Sobrien break; 418109313Sobrien case 'n': 419109313Sobrien flags |= ED_NOTE; 420109313Sobrien break; 421109313Sobrien case 'p': 422109313Sobrien flags |= ED_PHDR; 423109313Sobrien break; 424109313Sobrien case 'r': 425109313Sobrien flags |= ED_REL; 426109313Sobrien break; 427109313Sobrien case 's': 428109313Sobrien flags |= ED_SYMTAB; 429109313Sobrien break; 430109313Sobrien case 'w': 431109313Sobrien if ((out = fopen(optarg, "w")) == NULL) 432109313Sobrien err(1, "%s", optarg); 433109313Sobrien break; 434109313Sobrien case '?': 435109313Sobrien default: 436109313Sobrien usage(); 437109313Sobrien } 438109313Sobrien ac -= optind; 439109313Sobrien av += optind; 440109313Sobrien if (ac == 0 || flags == 0) 441109313Sobrien usage(); 442109313Sobrien if ((fd = open(*av, O_RDONLY)) < 0 || 443109313Sobrien fstat(fd, &sb) < 0) 444109313Sobrien err(1, NULL); 445109313Sobrien e = mmap(NULL, sb.st_size, PROT_READ, MAP_SHARED, fd, 0); 446109313Sobrien if (e == MAP_FAILED) 447109313Sobrien err(1, NULL); 448109313Sobrien if (!IS_ELF(*(Elf32_Ehdr *)e)) 449109313Sobrien errx(1, "not an elf file"); 450109313Sobrien phoff = elf_get_off(e, e, E_PHOFF); 451109313Sobrien shoff = elf_get_off(e, e, E_SHOFF); 452109313Sobrien phentsize = elf_get_quarter(e, e, E_PHENTSIZE); 453109313Sobrien phnum = elf_get_quarter(e, e, E_PHNUM); 454109313Sobrien shentsize = elf_get_quarter(e, e, E_SHENTSIZE); 455109313Sobrien shnum = elf_get_quarter(e, e, E_SHNUM); 456109313Sobrien shstrndx = elf_get_quarter(e, e, E_SHSTRNDX); 457110256Sobrien p = (char *)e + phoff; 458110256Sobrien sh = (char *)e + shoff; 459110256Sobrien offset = elf_get_off(e, (char *)sh + shstrndx * shentsize, SH_OFFSET); 460110252Sobrien shstrtab = (char *)e + offset; 461110256Sobrien for (i = 0; (u_int64_t)i < shnum; i++) { 462110256Sobrien name = elf_get_word(e, (char *)sh + i * shentsize, SH_NAME); 463110256Sobrien offset = elf_get_off(e, (char *)sh + i * shentsize, SH_OFFSET); 464109313Sobrien if (strcmp(shstrtab + name, ".strtab") == 0) 465110252Sobrien strtab = (char *)e + offset; 466109313Sobrien if (strcmp(shstrtab + name, ".dynstr") == 0) 467110252Sobrien dynstr = (char *)e + offset; 468109313Sobrien } 469109313Sobrien if (flags & ED_EHDR) 470109313Sobrien elf_print_ehdr(e); 471109313Sobrien if (flags & ED_PHDR) 472109313Sobrien elf_print_phdr(e, p); 473109313Sobrien if (flags & ED_SHDR) 474109313Sobrien elf_print_shdr(e, sh); 475110256Sobrien for (i = 0; (u_int64_t)i < phnum; i++) { 476110256Sobrien v = (char *)p + i * phentsize; 477109313Sobrien type = elf_get_word(e, v, P_TYPE); 478109313Sobrien switch (type) { 479109313Sobrien case PT_INTERP: 480109313Sobrien if (flags & ED_INTERP) 481109313Sobrien elf_print_interp(e, v); 482109313Sobrien break; 483109313Sobrien case PT_NULL: 484109313Sobrien case PT_LOAD: 485109313Sobrien case PT_DYNAMIC: 486109313Sobrien case PT_NOTE: 487109313Sobrien case PT_SHLIB: 488109313Sobrien case PT_PHDR: 489109313Sobrien break; 490109313Sobrien } 491109313Sobrien } 492110256Sobrien for (i = 0; (u_int64_t)i < shnum; i++) { 493110256Sobrien v = (char *)sh + i * shentsize; 494109313Sobrien type = elf_get_word(e, v, SH_TYPE); 495109313Sobrien switch (type) { 496109313Sobrien case SHT_SYMTAB: 497109313Sobrien if (flags & ED_SYMTAB) 498109313Sobrien elf_print_symtab(e, v, strtab); 499109313Sobrien break; 500109313Sobrien case SHT_DYNAMIC: 501109313Sobrien if (flags & ED_DYN) 502109313Sobrien elf_print_dynamic(e, v); 503109313Sobrien break; 504109313Sobrien case SHT_RELA: 505109313Sobrien if (flags & ED_REL) 506109313Sobrien elf_print_rela(e, v); 507109313Sobrien break; 508109313Sobrien case SHT_REL: 509109313Sobrien if (flags & ED_REL) 510109313Sobrien elf_print_rel(e, v); 511109313Sobrien break; 512109313Sobrien case SHT_NOTE: 513109313Sobrien name = elf_get_word(e, v, SH_NAME); 514109313Sobrien if (flags & ED_NOTE && 515109313Sobrien strcmp(shstrtab + name, ".note.ABI-tag") == 0) 516109313Sobrien elf_print_note(e, v); 517109313Sobrien break; 518109313Sobrien case SHT_DYNSYM: 519109313Sobrien if (flags & ED_SYMTAB) 520109313Sobrien elf_print_symtab(e, v, dynstr); 521109313Sobrien break; 522109313Sobrien case SHT_PROGBITS: 523109313Sobrien name = elf_get_word(e, v, SH_NAME); 524109313Sobrien if (flags & ED_GOT && 525109313Sobrien strcmp(shstrtab + name, ".got") == 0) 526109313Sobrien elf_print_got(e, v); 527109313Sobrien break; 528109313Sobrien case SHT_HASH: 529109313Sobrien if (flags & ED_HASH) 530109313Sobrien elf_print_hash(e, v); 531109313Sobrien break; 532109313Sobrien case SHT_NULL: 533109313Sobrien case SHT_STRTAB: 534109313Sobrien case SHT_NOBITS: 535109313Sobrien case SHT_SHLIB: 536109313Sobrien break; 537109313Sobrien } 538109313Sobrien } 539109313Sobrien 540109313Sobrien return 0; 541109313Sobrien} 542109313Sobrien 543109313Sobrienvoid 544110252Sobrienelf_print_ehdr(Elf32_Ehdr *e) 545109313Sobrien{ 546109313Sobrien u_int64_t class; 547109313Sobrien u_int64_t data; 548109313Sobrien u_int64_t osabi; 549109313Sobrien u_int64_t type; 550109313Sobrien u_int64_t machine; 551109313Sobrien u_int64_t version; 552109313Sobrien u_int64_t entry; 553109313Sobrien u_int64_t phoff; 554109313Sobrien u_int64_t shoff; 555109313Sobrien u_int64_t flags; 556109313Sobrien u_int64_t ehsize; 557109313Sobrien u_int64_t phentsize; 558109313Sobrien u_int64_t phnum; 559109313Sobrien u_int64_t shentsize; 560109313Sobrien u_int64_t shnum; 561109313Sobrien u_int64_t shstrndx; 562109313Sobrien 563109313Sobrien class = elf_get_byte(e, e, E_CLASS); 564109313Sobrien data = elf_get_byte(e, e, E_DATA); 565109313Sobrien osabi = elf_get_byte(e, e, E_OSABI); 566109313Sobrien type = elf_get_quarter(e, e, E_TYPE); 567109313Sobrien machine = elf_get_quarter(e, e, E_MACHINE); 568109313Sobrien version = elf_get_word(e, e, E_VERSION); 569109313Sobrien entry = elf_get_addr(e, e, E_ENTRY); 570109313Sobrien phoff = elf_get_off(e, e, E_PHOFF); 571109313Sobrien shoff = elf_get_off(e, e, E_SHOFF); 572109313Sobrien flags = elf_get_word(e, e, E_FLAGS); 573109313Sobrien ehsize = elf_get_quarter(e, e, E_EHSIZE); 574109313Sobrien phentsize = elf_get_quarter(e, e, E_PHENTSIZE); 575109313Sobrien phnum = elf_get_quarter(e, e, E_PHNUM); 576109313Sobrien shentsize = elf_get_quarter(e, e, E_SHENTSIZE); 577109313Sobrien shnum = elf_get_quarter(e, e, E_SHNUM); 578109313Sobrien shstrndx = elf_get_quarter(e, e, E_SHSTRNDX); 579109313Sobrien fprintf(out, "\nelf header:\n"); 580109313Sobrien fprintf(out, "\n"); 581109313Sobrien fprintf(out, "\te_ident: %s %s %s\n", ei_classes[class], ei_data[data], 582109313Sobrien ei_abis[osabi]); 583109313Sobrien fprintf(out, "\te_type: %s\n", e_types[type]); 584109457Smarcel fprintf(out, "\te_machine: %s\n", e_machines(machine)); 585109313Sobrien fprintf(out, "\te_version: %s\n", ei_versions[version]); 586110257Sobrien fprintf(out, "\te_entry: %#jx\n", (intmax_t)entry); 587110257Sobrien fprintf(out, "\te_phoff: %jd\n", (intmax_t)phoff); 588110257Sobrien fprintf(out, "\te_shoff: %jd\n", (intmax_t)shoff); 589110257Sobrien fprintf(out, "\te_flags: %jd\n", (intmax_t)flags); 590110257Sobrien fprintf(out, "\te_ehsize: %jd\n", (intmax_t)ehsize); 591110257Sobrien fprintf(out, "\te_phentsize: %jd\n", (intmax_t)phentsize); 592110257Sobrien fprintf(out, "\te_phnum: %jd\n", (intmax_t)phnum); 593110257Sobrien fprintf(out, "\te_shentsize: %jd\n", (intmax_t)shentsize); 594110257Sobrien fprintf(out, "\te_shnum: %jd\n", (intmax_t)shnum); 595110257Sobrien fprintf(out, "\te_shstrndx: %jd\n", (intmax_t)shstrndx); 596109313Sobrien} 597109313Sobrien 598109313Sobrienvoid 599110252Sobrienelf_print_phdr(Elf32_Ehdr *e, void *p) 600109313Sobrien{ 601109313Sobrien u_int64_t phentsize; 602109313Sobrien u_int64_t phnum; 603109313Sobrien u_int64_t type; 604109313Sobrien u_int64_t offset; 605109313Sobrien u_int64_t vaddr; 606109313Sobrien u_int64_t paddr; 607109313Sobrien u_int64_t filesz; 608109313Sobrien u_int64_t memsz; 609109313Sobrien u_int64_t flags; 610109313Sobrien u_int64_t align; 611109313Sobrien void *v; 612109313Sobrien int i; 613109313Sobrien 614109313Sobrien phentsize = elf_get_quarter(e, e, E_PHENTSIZE); 615109313Sobrien phnum = elf_get_quarter(e, e, E_PHNUM); 616109313Sobrien fprintf(out, "\nprogram header:\n"); 617110256Sobrien for (i = 0; (u_int64_t)i < phnum; i++) { 618110256Sobrien v = (char *)p + i * phentsize; 619109313Sobrien type = elf_get_word(e, v, P_TYPE); 620109313Sobrien offset = elf_get_off(e, v, P_OFFSET); 621109313Sobrien vaddr = elf_get_addr(e, v, P_VADDR); 622109313Sobrien paddr = elf_get_addr(e, v, P_PADDR); 623109313Sobrien filesz = elf_get_size(e, v, P_FILESZ); 624109313Sobrien memsz = elf_get_size(e, v, P_MEMSZ); 625109313Sobrien flags = elf_get_word(e, v, P_FLAGS); 626109313Sobrien align = elf_get_size(e, v, P_ALIGN); 627109313Sobrien fprintf(out, "\n"); 628109313Sobrien fprintf(out, "entry: %d\n", i); 629109313Sobrien fprintf(out, "\tp_type: %s\n", p_types[type & 0x7]); 630110257Sobrien fprintf(out, "\tp_offset: %jd\n", (intmax_t)offset); 631110257Sobrien fprintf(out, "\tp_vaddr: %#jx\n", (intmax_t)vaddr); 632110257Sobrien fprintf(out, "\tp_paddr: %#jx\n", (intmax_t)paddr); 633110257Sobrien fprintf(out, "\tp_filesz: %jd\n", (intmax_t)filesz); 634110257Sobrien fprintf(out, "\tp_memsz: %jd\n", (intmax_t)memsz); 635109313Sobrien fprintf(out, "\tp_flags: %s\n", p_flags[flags]); 636110257Sobrien fprintf(out, "\tp_align: %jd\n", (intmax_t)align); 637109313Sobrien } 638109313Sobrien} 639109313Sobrien 640109313Sobrienvoid 641110252Sobrienelf_print_shdr(Elf32_Ehdr *e, void *sh) 642109313Sobrien{ 643109313Sobrien u_int64_t shentsize; 644109313Sobrien u_int64_t shnum; 645109313Sobrien u_int64_t name; 646109313Sobrien u_int64_t type; 647109313Sobrien u_int64_t flags; 648109313Sobrien u_int64_t addr; 649109313Sobrien u_int64_t offset; 650109313Sobrien u_int64_t size; 651110256Sobrien u_int64_t shlink; 652109313Sobrien u_int64_t info; 653109313Sobrien u_int64_t addralign; 654109313Sobrien u_int64_t entsize; 655109313Sobrien void *v; 656109313Sobrien int i; 657109313Sobrien 658109313Sobrien shentsize = elf_get_quarter(e, e, E_SHENTSIZE); 659109313Sobrien shnum = elf_get_quarter(e, e, E_SHNUM); 660109313Sobrien fprintf(out, "\nsection header:\n"); 661110256Sobrien for (i = 0; (u_int64_t)i < shnum; i++) { 662110256Sobrien v = (char *)sh + i * shentsize; 663109313Sobrien name = elf_get_word(e, v, SH_NAME); 664109313Sobrien type = elf_get_word(e, v, SH_TYPE); 665109313Sobrien flags = elf_get_word(e, v, SH_FLAGS); 666109313Sobrien addr = elf_get_addr(e, v, SH_ADDR); 667109313Sobrien offset = elf_get_off(e, v, SH_OFFSET); 668109313Sobrien size = elf_get_size(e, v, SH_SIZE); 669110256Sobrien shlink = elf_get_word(e, v, SH_LINK); 670109313Sobrien info = elf_get_word(e, v, SH_INFO); 671109313Sobrien addralign = elf_get_size(e, v, SH_ADDRALIGN); 672109313Sobrien entsize = elf_get_size(e, v, SH_ENTSIZE); 673109313Sobrien fprintf(out, "\n"); 674109313Sobrien fprintf(out, "entry: %d\n", i); 675109313Sobrien fprintf(out, "\tsh_name: %s\n", shstrtab + name); 676109329Sobrien fprintf(out, "\tsh_type: %s\n", sh_types(type)); 677109313Sobrien fprintf(out, "\tsh_flags: %s\n", sh_flags[flags & 0x7]); 678110257Sobrien fprintf(out, "\tsh_addr: %#jx\n", addr); 679110257Sobrien fprintf(out, "\tsh_offset: %jd\n", (intmax_t)offset); 680110257Sobrien fprintf(out, "\tsh_size: %jd\n", (intmax_t)size); 681110257Sobrien fprintf(out, "\tsh_link: %jd\n", (intmax_t)shlink); 682110257Sobrien fprintf(out, "\tsh_info: %jd\n", (intmax_t)info); 683110257Sobrien fprintf(out, "\tsh_addralign: %jd\n", (intmax_t)addralign); 684110257Sobrien fprintf(out, "\tsh_entsize: %jd\n", (intmax_t)entsize); 685109313Sobrien } 686109313Sobrien} 687109313Sobrien 688109313Sobrienvoid 689110252Sobrienelf_print_symtab(Elf32_Ehdr *e, void *sh, char *str) 690109313Sobrien{ 691109313Sobrien u_int64_t offset; 692109313Sobrien u_int64_t entsize; 693109313Sobrien u_int64_t size; 694109313Sobrien u_int64_t name; 695109313Sobrien u_int64_t value; 696109313Sobrien u_int64_t info; 697109313Sobrien u_int64_t shndx; 698109313Sobrien void *st; 699109313Sobrien int len; 700109313Sobrien int i; 701109313Sobrien 702109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 703109313Sobrien entsize = elf_get_size(e, sh, SH_ENTSIZE); 704109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 705109313Sobrien name = elf_get_word(e, sh, SH_NAME); 706109313Sobrien len = size / entsize; 707109313Sobrien fprintf(out, "\nsymbol table (%s):\n", shstrtab + name); 708109313Sobrien for (i = 0; i < len; i++) { 709110256Sobrien st = (char *)e + offset + i * entsize; 710109313Sobrien name = elf_get_word(e, st, ST_NAME); 711109313Sobrien value = elf_get_addr(e, st, ST_VALUE); 712109313Sobrien size = elf_get_size(e, st, ST_SIZE); 713109313Sobrien info = elf_get_byte(e, st, ST_INFO); 714109313Sobrien shndx = elf_get_quarter(e, st, ST_SHNDX); 715109313Sobrien fprintf(out, "\n"); 716109313Sobrien fprintf(out, "entry: %d\n", i); 717109313Sobrien fprintf(out, "\tst_name: %s\n", str + name); 718110257Sobrien fprintf(out, "\tst_value: %#jx\n", value); 719110257Sobrien fprintf(out, "\tst_size: %jd\n", (intmax_t)size); 720109313Sobrien fprintf(out, "\tst_info: %s %s\n", 721109313Sobrien st_types[ELF32_ST_TYPE(info)], 722109313Sobrien st_bindings[ELF32_ST_BIND(info)]); 723110257Sobrien fprintf(out, "\tst_shndx: %jd\n", (intmax_t)shndx); 724109313Sobrien } 725109313Sobrien} 726109313Sobrien 727109313Sobrienvoid 728110252Sobrienelf_print_dynamic(Elf32_Ehdr *e, void *sh) 729109313Sobrien{ 730109313Sobrien u_int64_t offset; 731109313Sobrien u_int64_t entsize; 732109313Sobrien u_int64_t size; 733109313Sobrien int64_t tag; 734109313Sobrien u_int64_t ptr; 735109313Sobrien u_int64_t val; 736109313Sobrien void *d; 737109313Sobrien int i; 738109313Sobrien 739109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 740109313Sobrien entsize = elf_get_size(e, sh, SH_ENTSIZE); 741109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 742109313Sobrien fprintf(out, "\ndynamic:\n"); 743110256Sobrien for (i = 0; (u_int64_t)i < size / entsize; i++) { 744110256Sobrien d = (char *)e + offset + i * entsize; 745109313Sobrien tag = elf_get_size(e, d, D_TAG); 746109313Sobrien ptr = elf_get_size(e, d, D_PTR); 747109313Sobrien val = elf_get_addr(e, d, D_VAL); 748109313Sobrien fprintf(out, "\n"); 749109313Sobrien fprintf(out, "entry: %d\n", i); 750109332Sobrien fprintf(out, "\td_tag: %s\n", d_tags(tag)); 751109313Sobrien switch (tag) { 752109313Sobrien case DT_NEEDED: 753109313Sobrien case DT_SONAME: 754109313Sobrien case DT_RPATH: 755109313Sobrien fprintf(out, "\td_val: %s\n", dynstr + val); 756109313Sobrien break; 757109313Sobrien case DT_PLTRELSZ: 758109313Sobrien case DT_RELA: 759109313Sobrien case DT_RELASZ: 760109313Sobrien case DT_RELAENT: 761109313Sobrien case DT_STRSZ: 762109313Sobrien case DT_SYMENT: 763109313Sobrien case DT_RELSZ: 764109313Sobrien case DT_RELENT: 765109313Sobrien case DT_PLTREL: 766110257Sobrien fprintf(out, "\td_val: %jd\n", (intmax_t)val); 767109313Sobrien break; 768109313Sobrien case DT_PLTGOT: 769109313Sobrien case DT_HASH: 770109313Sobrien case DT_STRTAB: 771109313Sobrien case DT_SYMTAB: 772109313Sobrien case DT_INIT: 773109313Sobrien case DT_FINI: 774109313Sobrien case DT_REL: 775109313Sobrien case DT_JMPREL: 776110257Sobrien fprintf(out, "\td_ptr: %#jx\n", ptr); 777109313Sobrien break; 778109313Sobrien case DT_NULL: 779109313Sobrien case DT_SYMBOLIC: 780109313Sobrien case DT_DEBUG: 781109313Sobrien case DT_TEXTREL: 782109313Sobrien break; 783109313Sobrien } 784109313Sobrien } 785109313Sobrien} 786109313Sobrien 787109313Sobrienvoid 788110252Sobrienelf_print_rela(Elf32_Ehdr *e, void *sh) 789109313Sobrien{ 790109313Sobrien u_int64_t offset; 791109313Sobrien u_int64_t entsize; 792109313Sobrien u_int64_t size; 793109313Sobrien u_int64_t name; 794109313Sobrien u_int64_t info; 795109313Sobrien int64_t addend; 796109313Sobrien void *ra; 797109313Sobrien void *v; 798109313Sobrien int i; 799109313Sobrien 800109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 801109313Sobrien entsize = elf_get_size(e, sh, SH_ENTSIZE); 802109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 803109313Sobrien name = elf_get_word(e, sh, SH_NAME); 804110256Sobrien v = (char *)e + offset; 805109313Sobrien fprintf(out, "\nrelocation with addend (%s):\n", shstrtab + name); 806110256Sobrien for (i = 0; (u_int64_t)i < size / entsize; i++) { 807110256Sobrien ra = (char *)v + i * entsize; 808109313Sobrien offset = elf_get_addr(e, ra, RA_OFFSET); 809109313Sobrien info = elf_get_word(e, ra, RA_INFO); 810109313Sobrien addend = elf_get_off(e, ra, RA_ADDEND); 811109313Sobrien fprintf(out, "\n"); 812109313Sobrien fprintf(out, "entry: %d\n", i); 813110257Sobrien fprintf(out, "\tr_offset: %#jx\n", offset); 814110257Sobrien fprintf(out, "\tr_info: %jd\n", (intmax_t)info); 815110257Sobrien fprintf(out, "\tr_addend: %jd\n", (intmax_t)addend); 816109313Sobrien } 817109313Sobrien} 818109313Sobrien 819109313Sobrienvoid 820110252Sobrienelf_print_rel(Elf32_Ehdr *e, void *sh) 821109313Sobrien{ 822109313Sobrien u_int64_t offset; 823109313Sobrien u_int64_t entsize; 824109313Sobrien u_int64_t size; 825109313Sobrien u_int64_t name; 826109313Sobrien u_int64_t info; 827109313Sobrien void *r; 828109313Sobrien void *v; 829109313Sobrien int i; 830109313Sobrien 831109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 832109313Sobrien entsize = elf_get_size(e, sh, SH_ENTSIZE); 833109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 834109313Sobrien name = elf_get_word(e, sh, SH_NAME); 835110256Sobrien v = (char *)e + offset; 836109313Sobrien fprintf(out, "\nrelocation (%s):\n", shstrtab + name); 837110256Sobrien for (i = 0; (u_int64_t)i < size / entsize; i++) { 838110256Sobrien r = (char *)v + i * entsize; 839109313Sobrien offset = elf_get_addr(e, r, R_OFFSET); 840109313Sobrien info = elf_get_word(e, r, R_INFO); 841109313Sobrien fprintf(out, "\n"); 842109313Sobrien fprintf(out, "entry: %d\n", i); 843110257Sobrien fprintf(out, "\tr_offset: %#jx\n", offset); 844110257Sobrien fprintf(out, "\tr_info: %jd\n", (intmax_t)info); 845109313Sobrien } 846109313Sobrien} 847109313Sobrien 848109313Sobrienvoid 849110252Sobrienelf_print_interp(Elf32_Ehdr *e, void *p) 850109313Sobrien{ 851109313Sobrien u_int64_t offset; 852109313Sobrien char *s; 853109313Sobrien 854109313Sobrien offset = elf_get_off(e, p, P_OFFSET); 855110252Sobrien s = (char *)e + offset; 856109313Sobrien fprintf(out, "\ninterp:\n"); 857109313Sobrien fprintf(out, "\t%s\n", s); 858109313Sobrien} 859109313Sobrien 860109313Sobrienvoid 861110252Sobrienelf_print_got(Elf32_Ehdr *e, void *sh) 862109313Sobrien{ 863109313Sobrien u_int64_t offset; 864109313Sobrien u_int64_t addralign; 865109313Sobrien u_int64_t size; 866109313Sobrien u_int64_t addr; 867109313Sobrien void *v; 868109313Sobrien int i; 869109313Sobrien 870109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 871109313Sobrien addralign = elf_get_size(e, sh, SH_ADDRALIGN); 872109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 873110256Sobrien v = (char *)e + offset; 874109313Sobrien fprintf(out, "\nglobal offset table:\n"); 875110256Sobrien for (i = 0; (u_int64_t)i < size / addralign; i++) { 876110256Sobrien addr = elf_get_addr(e, (char *)v + i * addralign, 0); 877109313Sobrien fprintf(out, "\n"); 878109313Sobrien fprintf(out, "entry: %d\n", i); 879110257Sobrien fprintf(out, "\t%#jx\n", addr); 880109313Sobrien } 881109313Sobrien} 882109313Sobrien 883109313Sobrienvoid 884110256Sobrienelf_print_hash(Elf32_Ehdr *e __unused, void *sh __unused) 885109313Sobrien{ 886109313Sobrien} 887109313Sobrien 888109313Sobrienvoid 889110252Sobrienelf_print_note(Elf32_Ehdr *e, void *sh) 890109313Sobrien{ 891109313Sobrien u_int64_t offset; 892109313Sobrien u_int64_t size; 893109313Sobrien u_int64_t name; 894109313Sobrien u_int32_t namesz; 895109313Sobrien u_int32_t descsz; 896109313Sobrien u_int32_t type; 897109313Sobrien u_int32_t desc; 898110256Sobrien char *n, *s; 899109313Sobrien 900109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 901109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 902109313Sobrien name = elf_get_word(e, sh, SH_NAME); 903110256Sobrien n = (char *)e + offset; 904109313Sobrien fprintf(out, "\nnote (%s):\n", shstrtab + name); 905110256Sobrien while (n < ((char *)e + offset + size)) { 906109313Sobrien namesz = elf_get_word(e, n, N_NAMESZ); 907109313Sobrien descsz = elf_get_word(e, n, N_DESCSZ); 908109313Sobrien type = elf_get_word(e, n, N_TYPE); 909110256Sobrien s = n + sizeof(Elf_Note); 910110256Sobrien desc = elf_get_word(e, n + sizeof(Elf_Note) + namesz, 0); 911109313Sobrien fprintf(out, "\t%s %d\n", s, desc); 912109313Sobrien n += sizeof(Elf_Note) + namesz + descsz; 913109313Sobrien } 914109313Sobrien} 915109313Sobrien 916109313Sobrienu_int64_t 917109313Sobrienelf_get_byte(Elf32_Ehdr *e, void *base, elf_member_t member) 918109313Sobrien{ 919109313Sobrien u_int64_t val; 920109313Sobrien u_char *p; 921109313Sobrien 922109313Sobrien val = 0; 923109313Sobrien switch (e->e_ident[EI_CLASS]) { 924109313Sobrien case ELFCLASS32: 925110256Sobrien p = (char *)base + elf32_offsets[member]; 926109313Sobrien val = *p; 927109313Sobrien break; 928109313Sobrien case ELFCLASS64: 929110256Sobrien p = (char *)base + elf64_offsets[member]; 930109313Sobrien val = *p; 931109313Sobrien break; 932109313Sobrien case ELFCLASSNONE: 933109313Sobrien errx(1, "invalid class"); 934109313Sobrien } 935109313Sobrien 936109313Sobrien return val; 937109313Sobrien} 938109313Sobrien 939109313Sobrienu_int64_t 940109313Sobrienelf_get_quarter(Elf32_Ehdr *e, void *base, elf_member_t member) 941109313Sobrien{ 942109313Sobrien u_int64_t val; 943109313Sobrien u_char *p; 944109313Sobrien 945109313Sobrien val = 0; 946109313Sobrien switch (e->e_ident[EI_CLASS]) { 947109313Sobrien case ELFCLASS32: 948110256Sobrien p = (char *)base + elf32_offsets[member]; 949109313Sobrien switch (e->e_ident[EI_DATA]) { 950109313Sobrien case ELFDATA2MSB: 951109313Sobrien val = p[0] << 8 | p[1]; 952109313Sobrien break; 953109313Sobrien case ELFDATA2LSB: 954109313Sobrien val = p[1] << 8 | p[0]; 955109313Sobrien break; 956109313Sobrien case ELFDATANONE: 957109313Sobrien errx(1, "invalid data format"); 958109313Sobrien } 959109313Sobrien break; 960109313Sobrien case ELFCLASS64: 961110256Sobrien p = (char *)base + elf64_offsets[member]; 962109313Sobrien switch (e->e_ident[EI_DATA]) { 963109313Sobrien case ELFDATA2MSB: 964109313Sobrien val = p[0] << 8 | p[1]; 965109313Sobrien break; 966109313Sobrien case ELFDATA2LSB: 967109313Sobrien val = p[1] << 8 | p[0]; 968109313Sobrien break; 969109313Sobrien case ELFDATANONE: 970109313Sobrien errx(1, "invalid data format"); 971109313Sobrien } 972109313Sobrien break; 973109313Sobrien case ELFCLASSNONE: 974109313Sobrien errx(1, "invalid class"); 975109313Sobrien } 976109313Sobrien 977109313Sobrien return val; 978109313Sobrien} 979109313Sobrien 980109313Sobrienu_int64_t 981109313Sobrienelf_get_half(Elf32_Ehdr *e, void *base, elf_member_t member) 982109313Sobrien{ 983109313Sobrien u_int64_t val; 984109313Sobrien u_char *p; 985109313Sobrien 986109313Sobrien val = 0; 987109313Sobrien switch (e->e_ident[EI_CLASS]) { 988109313Sobrien case ELFCLASS32: 989110256Sobrien p = (char *)base + elf32_offsets[member]; 990109313Sobrien switch (e->e_ident[EI_DATA]) { 991109313Sobrien case ELFDATA2MSB: 992109313Sobrien val = p[0] << 8 | p[1]; 993109313Sobrien break; 994109313Sobrien case ELFDATA2LSB: 995109313Sobrien val = p[1] << 8 | p[0]; 996109313Sobrien break; 997109313Sobrien case ELFDATANONE: 998109313Sobrien errx(1, "invalid data format"); 999109313Sobrien } 1000109313Sobrien break; 1001109313Sobrien case ELFCLASS64: 1002110256Sobrien p = (char *)base + elf64_offsets[member]; 1003109313Sobrien switch (e->e_ident[EI_DATA]) { 1004109313Sobrien case ELFDATA2MSB: 1005109313Sobrien val = p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3]; 1006109313Sobrien break; 1007109313Sobrien case ELFDATA2LSB: 1008109313Sobrien val = p[3] << 24 | p[2] << 16 | p[1] << 8 | p[0]; 1009109313Sobrien break; 1010109313Sobrien case ELFDATANONE: 1011109313Sobrien errx(1, "invalid data format"); 1012109313Sobrien } 1013109313Sobrien break; 1014109313Sobrien case ELFCLASSNONE: 1015109313Sobrien errx(1, "invalid class"); 1016109313Sobrien } 1017109313Sobrien 1018109313Sobrien return val; 1019109313Sobrien} 1020109313Sobrien 1021109313Sobrienu_int64_t 1022109313Sobrienelf_get_word(Elf32_Ehdr *e, void *base, elf_member_t member) 1023109313Sobrien{ 1024109313Sobrien u_int64_t val; 1025109313Sobrien u_char *p; 1026109313Sobrien 1027109313Sobrien val = 0; 1028109313Sobrien switch (e->e_ident[EI_CLASS]) { 1029109313Sobrien case ELFCLASS32: 1030110256Sobrien p = (char *)base + elf32_offsets[member]; 1031109313Sobrien switch (e->e_ident[EI_DATA]) { 1032109313Sobrien case ELFDATA2MSB: 1033109313Sobrien val = p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3]; 1034109313Sobrien break; 1035109313Sobrien case ELFDATA2LSB: 1036109313Sobrien val = p[3] << 24 | p[2] << 16 | p[1] << 8 | p[0]; 1037109313Sobrien break; 1038109313Sobrien case ELFDATANONE: 1039109313Sobrien errx(1, "invalid data format"); 1040109313Sobrien } 1041109313Sobrien break; 1042109313Sobrien case ELFCLASS64: 1043110256Sobrien p = (char *)base + elf64_offsets[member]; 1044109313Sobrien switch (e->e_ident[EI_DATA]) { 1045109313Sobrien case ELFDATA2MSB: 1046109313Sobrien val = p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3]; 1047109313Sobrien break; 1048109313Sobrien case ELFDATA2LSB: 1049109313Sobrien val = p[3] << 24 | p[2] << 16 | p[1] << 8 | p[0]; 1050109313Sobrien break; 1051109313Sobrien case ELFDATANONE: 1052109313Sobrien errx(1, "invalid data format"); 1053109313Sobrien } 1054109313Sobrien break; 1055109313Sobrien case ELFCLASSNONE: 1056109313Sobrien errx(1, "invalid class"); 1057109313Sobrien } 1058109313Sobrien 1059109313Sobrien return val; 1060109313Sobrien} 1061109313Sobrien 1062109313Sobrienu_int64_t 1063109313Sobrienelf_get_quad(Elf32_Ehdr *e, void *base, elf_member_t member) 1064109313Sobrien{ 1065109313Sobrien u_int64_t high; 1066109313Sobrien u_int64_t low; 1067109313Sobrien u_int64_t val; 1068109313Sobrien u_char *p; 1069109313Sobrien 1070109313Sobrien val = 0; 1071109313Sobrien switch (e->e_ident[EI_CLASS]) { 1072109313Sobrien case ELFCLASS32: 1073110256Sobrien p = (char *)base + elf32_offsets[member]; 1074109313Sobrien switch (e->e_ident[EI_DATA]) { 1075109313Sobrien case ELFDATA2MSB: 1076109313Sobrien val = p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3]; 1077109313Sobrien break; 1078109313Sobrien case ELFDATA2LSB: 1079109313Sobrien val = p[3] << 24 | p[2] << 16 | p[1] << 8 | p[0]; 1080109313Sobrien break; 1081109313Sobrien case ELFDATANONE: 1082109313Sobrien errx(1, "invalid data format"); 1083109313Sobrien } 1084109313Sobrien break; 1085109313Sobrien case ELFCLASS64: 1086110256Sobrien p = (char *)base + elf64_offsets[member]; 1087109313Sobrien switch (e->e_ident[EI_DATA]) { 1088109313Sobrien case ELFDATA2MSB: 1089109313Sobrien high = p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3]; 1090109313Sobrien low = p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7]; 1091109313Sobrien val = high << 32 | low; 1092109313Sobrien break; 1093109313Sobrien case ELFDATA2LSB: 1094109313Sobrien high = p[7] << 24 | p[6] << 16 | p[5] << 8 | p[4]; 1095109313Sobrien low = p[3] << 24 | p[2] << 16 | p[1] << 8 | p[0]; 1096109313Sobrien val = high << 32 | low; 1097109313Sobrien break; 1098109313Sobrien case ELFDATANONE: 1099109313Sobrien errx(1, "invalid data format"); 1100109313Sobrien } 1101109313Sobrien break; 1102109313Sobrien case ELFCLASSNONE: 1103109313Sobrien errx(1, "invalid class"); 1104109313Sobrien } 1105109313Sobrien 1106109313Sobrien return val; 1107109313Sobrien} 1108109313Sobrien 1109109313Sobrienvoid 1110109313Sobrienusage(void) 1111109313Sobrien{ 1112109313Sobrien fprintf(stderr, "usage: elfdump [-acdeiGhnprs] [-w file] filename\n"); 1113109313Sobrien exit(1); 1114109313Sobrien} 1115