elfdump.c revision 118680
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 118680 2003-08-09 01:55:37Z marcel $"); 30109313Sobrien 31109313Sobrien#include <sys/types.h> 32109313Sobrien#include <sys/elf32.h> 33109313Sobrien#include <sys/elf64.h> 34118680Smarcel#include <sys/endian.h> 35109313Sobrien#include <sys/mman.h> 36109313Sobrien#include <sys/stat.h> 37109313Sobrien#include <err.h> 38109313Sobrien#include <fcntl.h> 39110257Sobrien#include <inttypes.h> 40109313Sobrien#include <stddef.h> 41109313Sobrien#include <stdio.h> 42109313Sobrien#include <stdlib.h> 43109313Sobrien#include <string.h> 44109313Sobrien#include <unistd.h> 45109313Sobrien 46109313Sobrien#define ED_DYN (1<<0) 47109313Sobrien#define ED_EHDR (1<<1) 48109313Sobrien#define ED_GOT (1<<2) 49109313Sobrien#define ED_HASH (1<<3) 50109313Sobrien#define ED_INTERP (1<<4) 51109313Sobrien#define ED_NOTE (1<<5) 52109313Sobrien#define ED_PHDR (1<<6) 53109313Sobrien#define ED_REL (1<<7) 54109313Sobrien#define ED_SHDR (1<<8) 55109313Sobrien#define ED_SYMTAB (1<<9) 56109313Sobrien#define ED_ALL ((1<<10)-1) 57109313Sobrien 58109313Sobrien#define elf_get_addr elf_get_quad 59109313Sobrien#define elf_get_off elf_get_quad 60109313Sobrien#define elf_get_size elf_get_quad 61109313Sobrien 62109313Sobrienenum elf_member { 63109313Sobrien D_TAG = 1, D_PTR, D_VAL, 64109313Sobrien 65109313Sobrien E_CLASS, E_DATA, E_OSABI, E_TYPE, E_MACHINE, E_VERSION, E_ENTRY, 66109313Sobrien E_PHOFF, E_SHOFF, E_FLAGS, E_EHSIZE, E_PHENTSIZE, E_PHNUM, E_SHENTSIZE, 67109313Sobrien E_SHNUM, E_SHSTRNDX, 68109313Sobrien 69109313Sobrien N_NAMESZ, N_DESCSZ, N_TYPE, 70109313Sobrien 71109313Sobrien P_TYPE, P_OFFSET, P_VADDR, P_PADDR, P_FILESZ, P_MEMSZ, P_FLAGS, 72109313Sobrien P_ALIGN, 73109313Sobrien 74109313Sobrien SH_NAME, SH_TYPE, SH_FLAGS, SH_ADDR, SH_OFFSET, SH_SIZE, SH_LINK, 75109313Sobrien SH_INFO, SH_ADDRALIGN, SH_ENTSIZE, 76109313Sobrien 77109313Sobrien ST_NAME, ST_VALUE, ST_SIZE, ST_INFO, ST_SHNDX, 78109313Sobrien 79109313Sobrien R_OFFSET, R_INFO, 80109313Sobrien 81109313Sobrien RA_OFFSET, RA_INFO, RA_ADDEND 82109313Sobrien}; 83109313Sobrien 84109313Sobrientypedef enum elf_member elf_member_t; 85109313Sobrien 86109313Sobrienint elf32_offsets[] = { 87109313Sobrien 0, 88109313Sobrien 89109313Sobrien offsetof(Elf32_Dyn, d_tag), offsetof(Elf32_Dyn, d_un.d_ptr), 90109313Sobrien offsetof(Elf32_Dyn, d_un.d_val), 91109313Sobrien 92109313Sobrien offsetof(Elf32_Ehdr, e_ident[EI_CLASS]), 93109313Sobrien offsetof(Elf32_Ehdr, e_ident[EI_DATA]), 94109313Sobrien offsetof(Elf32_Ehdr, e_ident[EI_OSABI]), 95109313Sobrien offsetof(Elf32_Ehdr, e_type), offsetof(Elf32_Ehdr, e_machine), 96109313Sobrien offsetof(Elf32_Ehdr, e_version), offsetof(Elf32_Ehdr, e_entry), 97109313Sobrien offsetof(Elf32_Ehdr, e_phoff), offsetof(Elf32_Ehdr, e_shoff), 98109313Sobrien offsetof(Elf32_Ehdr, e_flags), offsetof(Elf32_Ehdr, e_ehsize), 99109313Sobrien offsetof(Elf32_Ehdr, e_phentsize), offsetof(Elf32_Ehdr, e_phnum), 100109313Sobrien offsetof(Elf32_Ehdr, e_shentsize), offsetof(Elf32_Ehdr, e_shnum), 101109313Sobrien offsetof(Elf32_Ehdr, e_shstrndx), 102109313Sobrien 103109313Sobrien offsetof(Elf_Note, n_namesz), offsetof(Elf_Note, n_descsz), 104109313Sobrien offsetof(Elf_Note, n_type), 105109313Sobrien 106109313Sobrien offsetof(Elf32_Phdr, p_type), offsetof(Elf32_Phdr, p_offset), 107109313Sobrien offsetof(Elf32_Phdr, p_vaddr), offsetof(Elf32_Phdr, p_paddr), 108109313Sobrien offsetof(Elf32_Phdr, p_filesz), offsetof(Elf32_Phdr, p_memsz), 109109313Sobrien offsetof(Elf32_Phdr, p_flags), offsetof(Elf32_Phdr, p_align), 110109313Sobrien 111109313Sobrien offsetof(Elf32_Shdr, sh_name), offsetof(Elf32_Shdr, sh_type), 112109313Sobrien offsetof(Elf32_Shdr, sh_flags), offsetof(Elf32_Shdr, sh_addr), 113109313Sobrien offsetof(Elf32_Shdr, sh_offset), offsetof(Elf32_Shdr, sh_size), 114109313Sobrien offsetof(Elf32_Shdr, sh_link), offsetof(Elf32_Shdr, sh_info), 115109313Sobrien offsetof(Elf32_Shdr, sh_addralign), offsetof(Elf32_Shdr, sh_entsize), 116109313Sobrien 117109313Sobrien offsetof(Elf32_Sym, st_name), offsetof(Elf32_Sym, st_value), 118109313Sobrien offsetof(Elf32_Sym, st_size), offsetof(Elf32_Sym, st_info), 119109313Sobrien offsetof(Elf32_Sym, st_shndx), 120109313Sobrien 121109313Sobrien offsetof(Elf32_Rel, r_offset), offsetof(Elf32_Rel, r_info), 122109313Sobrien 123109313Sobrien offsetof(Elf32_Rela, r_offset), offsetof(Elf32_Rela, r_info), 124109313Sobrien offsetof(Elf32_Rela, r_addend) 125109313Sobrien}; 126109313Sobrien 127109313Sobrienint elf64_offsets[] = { 128109313Sobrien 0, 129109313Sobrien 130109313Sobrien offsetof(Elf64_Dyn, d_tag), offsetof(Elf64_Dyn, d_un.d_ptr), 131109313Sobrien offsetof(Elf64_Dyn, d_un.d_val), 132109313Sobrien 133109313Sobrien offsetof(Elf32_Ehdr, e_ident[EI_CLASS]), 134109313Sobrien offsetof(Elf32_Ehdr, e_ident[EI_DATA]), 135109313Sobrien offsetof(Elf32_Ehdr, e_ident[EI_OSABI]), 136109313Sobrien offsetof(Elf64_Ehdr, e_type), offsetof(Elf64_Ehdr, e_machine), 137109313Sobrien offsetof(Elf64_Ehdr, e_version), offsetof(Elf64_Ehdr, e_entry), 138109313Sobrien offsetof(Elf64_Ehdr, e_phoff), offsetof(Elf64_Ehdr, e_shoff), 139109313Sobrien offsetof(Elf64_Ehdr, e_flags), offsetof(Elf64_Ehdr, e_ehsize), 140109313Sobrien offsetof(Elf64_Ehdr, e_phentsize), offsetof(Elf64_Ehdr, e_phnum), 141109313Sobrien offsetof(Elf64_Ehdr, e_shentsize), offsetof(Elf64_Ehdr, e_shnum), 142109313Sobrien offsetof(Elf64_Ehdr, e_shstrndx), 143109313Sobrien 144109313Sobrien offsetof(Elf_Note, n_namesz), offsetof(Elf_Note, n_descsz), 145109313Sobrien offsetof(Elf_Note, n_type), 146109313Sobrien 147109313Sobrien offsetof(Elf64_Phdr, p_type), offsetof(Elf64_Phdr, p_offset), 148109313Sobrien offsetof(Elf64_Phdr, p_vaddr), offsetof(Elf64_Phdr, p_paddr), 149109313Sobrien offsetof(Elf64_Phdr, p_filesz), offsetof(Elf64_Phdr, p_memsz), 150109313Sobrien offsetof(Elf64_Phdr, p_flags), offsetof(Elf64_Phdr, p_align), 151109313Sobrien 152109313Sobrien offsetof(Elf64_Shdr, sh_name), offsetof(Elf64_Shdr, sh_type), 153109313Sobrien offsetof(Elf64_Shdr, sh_flags), offsetof(Elf64_Shdr, sh_addr), 154109313Sobrien offsetof(Elf64_Shdr, sh_offset), offsetof(Elf64_Shdr, sh_size), 155109313Sobrien offsetof(Elf64_Shdr, sh_link), offsetof(Elf64_Shdr, sh_info), 156109313Sobrien offsetof(Elf64_Shdr, sh_addralign), offsetof(Elf64_Shdr, sh_entsize), 157109313Sobrien 158109313Sobrien offsetof(Elf64_Sym, st_name), offsetof(Elf64_Sym, st_value), 159109313Sobrien offsetof(Elf64_Sym, st_size), offsetof(Elf64_Sym, st_info), 160109313Sobrien offsetof(Elf64_Sym, st_shndx), 161109313Sobrien 162109313Sobrien offsetof(Elf64_Rel, r_offset), offsetof(Elf64_Rel, r_info), 163109313Sobrien 164109313Sobrien offsetof(Elf64_Rela, r_offset), offsetof(Elf64_Rela, r_info), 165109313Sobrien offsetof(Elf64_Rela, r_addend) 166109313Sobrien}; 167109313Sobrien 168109332Sobrien/* http://www.sco.com/developers/gabi/latest/ch5.dynamic.html#tag_encodings */ 169110256Sobrienstatic const char * 170109332Sobriend_tags(u_int64_t tag) { 171109332Sobrien switch (tag) { 172109332Sobrien case 0: return "DT_NULL"; 173109332Sobrien case 1: return "DT_NEEDED"; 174109332Sobrien case 2: return "DT_PLTRELSZ"; 175109332Sobrien case 3: return "DT_PLTGOT"; 176109332Sobrien case 4: return "DT_HASH"; 177109332Sobrien case 5: return "DT_STRTAB"; 178109332Sobrien case 6: return "DT_SYMTAB"; 179109332Sobrien case 7: return "DT_RELA"; 180109332Sobrien case 8: return "DT_RELASZ"; 181109332Sobrien case 9: return "DT_RELAENT"; 182109332Sobrien case 10: return "DT_STRSZ"; 183109332Sobrien case 11: return "DT_SYMENT"; 184109332Sobrien case 12: return "DT_INIT"; 185109332Sobrien case 13: return "DT_FINI"; 186109332Sobrien case 14: return "DT_SONAME"; 187109332Sobrien case 15: return "DT_RPATH"; 188109332Sobrien case 16: return "DT_SYMBOLIC"; 189109332Sobrien case 17: return "DT_REL"; 190109332Sobrien case 18: return "DT_RELSZ"; 191109332Sobrien case 19: return "DT_RELENT"; 192109332Sobrien case 20: return "DT_PLTREL"; 193109332Sobrien case 21: return "DT_DEBUG"; 194109332Sobrien case 22: return "DT_TEXTREL"; 195109332Sobrien case 23: return "DT_JMPREL"; 196109332Sobrien case 24: return "DT_BIND_NOW"; 197109332Sobrien case 25: return "DT_INIT_ARRAY"; 198109332Sobrien case 26: return "DT_FINI_ARRAY"; 199109332Sobrien case 27: return "DT_INIT_ARRAYSZ"; 200109332Sobrien case 28: return "DT_FINI_ARRAYSZ"; 201109332Sobrien case 29: return "DT_RUNPATH"; 202109332Sobrien case 30: return "DT_FLAGS"; 203109332Sobrien case 32: return "DT_PREINIT_ARRAY"; /* XXX: DT_ENCODING */ 204109332Sobrien case 33: return "DT_PREINIT_ARRAYSZ"; 205109332Sobrien /* 0x6000000D - 0x6ffff000 operating system-specific semantics */ 206109332Sobrien case 0x6ffffdf5: return "DT_GNU_PRELINKED"; 207109332Sobrien case 0x6ffffdf6: return "DT_GNU_CONFLICTSZ"; 208109332Sobrien case 0x6ffffdf7: return "DT_GNU_LIBLISTSZ"; 209109332Sobrien case 0x6ffffdf8: return "DT_SUNW_CHECKSUM"; 210109332Sobrien case 0x6ffffdf9: return "DT_PLTPADSZ"; 211109332Sobrien case 0x6ffffdfa: return "DT_MOVEENT"; 212109332Sobrien case 0x6ffffdfb: return "DT_MOVESZ"; 213109332Sobrien case 0x6ffffdfc: return "DT_FEATURE"; 214109332Sobrien case 0x6ffffdfd: return "DT_POSFLAG_1"; 215109332Sobrien case 0x6ffffdfe: return "DT_SYMINSZ"; 216109332Sobrien case 0x6ffffdff: return "DT_SYMINENT (DT_VALRNGHI)"; 217109332Sobrien case 0x6ffffe00: return "DT_ADDRRNGLO"; 218109332Sobrien case 0x6ffffef8: return "DT_GNU_CONFLICT"; 219109332Sobrien case 0x6ffffef9: return "DT_GNU_LIBLIST"; 220109332Sobrien case 0x6ffffefa: return "DT_SUNW_CONFIG"; 221109332Sobrien case 0x6ffffefb: return "DT_SUNW_DEPAUDIT"; 222109332Sobrien case 0x6ffffefc: return "DT_SUNW_AUDIT"; 223109332Sobrien case 0x6ffffefd: return "DT_SUNW_PLTPAD"; 224109332Sobrien case 0x6ffffefe: return "DT_SUNW_MOVETAB"; 225109332Sobrien case 0x6ffffeff: return "DT_SYMINFO (DT_ADDRRNGHI)"; 226109332Sobrien case 0x6ffffff9: return "DT_RELACOUNT"; 227109332Sobrien case 0x6ffffffa: return "DT_RELCOUNT"; 228109332Sobrien case 0x6ffffffb: return "DT_FLAGS_1"; 229109332Sobrien case 0x6ffffffc: return "DT_VERDEF"; 230109332Sobrien case 0x6ffffffd: return "DT_VERDEFNUM"; 231109332Sobrien case 0x6ffffffe: return "DT_VERNEED"; 232109332Sobrien case 0x6fffffff: return "DT_VERNEEDNUM"; 233109332Sobrien case 0x6ffffff0: return "DT_GNU_VERSYM"; 234109332Sobrien /* 0x70000000 - 0x7fffffff processor-specific semantics */ 235109457Smarcel case 0x70000000: return "DT_IA64_PLT_RESERVE"; 236109332Sobrien case 0x7ffffffd: return "DT_SUNW_AUXILIARY"; 237109332Sobrien case 0x7ffffffe: return "DT_SUNW_USED"; 238109332Sobrien case 0x7fffffff: return "DT_SUNW_FILTER"; 239109332Sobrien default: return "ERROR: TAG NOT DEFINED"; 240109332Sobrien } 241109313Sobrien}; 242109313Sobrien 243110256Sobrienstatic const char * 244109457Smarcele_machines(u_int mach) 245109457Smarcel{ 246109457Smarcel switch (mach) { 247109457Smarcel case EM_NONE: return "EM_NONE"; 248109457Smarcel case EM_M32: return "EM_M32"; 249109457Smarcel case EM_SPARC: return "EM_SPARC"; 250109457Smarcel case EM_386: return "EM_386"; 251109457Smarcel case EM_68K: return "EM_68K"; 252109457Smarcel case EM_88K: return "EM_88K"; 253109457Smarcel case EM_486: return "EM_486"; 254109457Smarcel case EM_860: return "EM_860"; 255109457Smarcel case EM_MIPS: return "EM_MIPS"; 256109457Smarcel case EM_IA_64: return "EM_IA_64"; 257109457Smarcel } 258109457Smarcel return "(unknown machine)"; 259109313Sobrien}; 260109313Sobrien 261110256Sobrienconst char *e_types[] = { 262109313Sobrien "ET_NONE", "ET_REL", "ET_EXEC", "ET_DYN", "ET_CORE" 263109313Sobrien}; 264109313Sobrien 265110256Sobrienconst char *ei_versions[] = { 266109313Sobrien "EV_NONE", "EV_CURRENT" 267109313Sobrien}; 268109313Sobrien 269110256Sobrienconst char *ei_classes[] = { 270109313Sobrien "ELFCLASSNONE", "ELFCLASS32", "ELFCLASS64" 271109313Sobrien}; 272109313Sobrien 273110256Sobrienconst char *ei_data[] = { 274109313Sobrien "ELFDATANONE", "ELFDATA2LSB", "ELFDATA2MSB" 275109313Sobrien}; 276109313Sobrien 277110256Sobrienconst char *ei_abis[] = { 278109313Sobrien "ELFOSABI_SYSV", "ELFOSABI_HPUX", "ELFOSABI_NETBSD", "ELFOSABI_LINUX", 279109313Sobrien "ELFOSABI_HURD", "ELFOSABI_86OPEN", "ELFOSABI_SOLARIS", 280109313Sobrien "ELFOSABI_MONTEREY", "ELFOSABI_IRIX", "ELFOSABI_FREEBSD", 281109313Sobrien "ELFOSABI_TRU64", "ELFOSABI_MODESTO", "ELFOSABI_OPENBSD" 282109313Sobrien}; 283109313Sobrien 284110256Sobrienconst char *p_types[] = { 285109313Sobrien "PT_NULL", "PT_LOAD", "PT_DYNAMIC", "PT_INTERP", "PT_NOTE", 286109313Sobrien "PT_SHLIB", "PT_PHDR" 287109313Sobrien}; 288109313Sobrien 289110256Sobrienconst char *p_flags[] = { 290109313Sobrien "", "PF_X", "PF_W", "PF_X|PF_W", "PF_R", "PF_X|PF_R", "PF_W|PF_R", 291109313Sobrien "PF_X|PF_W|PF_R" 292109313Sobrien}; 293109313Sobrien 294109329Sobrien/* http://www.sco.com/developers/gabi/latest/ch4.sheader.html#sh_type */ 295110256Sobrienstatic const char * 296109332Sobriensh_types(u_int64_t sht) { 297109329Sobrien switch (sht) { 298109329Sobrien case 0: return "SHT_NULL"; 299109329Sobrien case 1: return "SHT_PROGBITS"; 300109329Sobrien case 2: return "SHT_SYMTAB"; 301109329Sobrien case 3: return "SHT_STRTAB"; 302109329Sobrien case 4: return "SHT_RELA"; 303109329Sobrien case 5: return "SHT_HASH"; 304109329Sobrien case 6: return "SHT_DYNAMIC"; 305109329Sobrien case 7: return "SHT_NOTE"; 306109329Sobrien case 8: return "SHT_NOBITS"; 307109329Sobrien case 9: return "SHT_REL"; 308109329Sobrien case 10: return "SHT_SHLIB"; 309109329Sobrien case 11: return "SHT_DYNSYM"; 310109329Sobrien case 14: return "SHT_INIT_ARRAY"; 311109329Sobrien case 15: return "SHT_FINI_ARRAY"; 312109329Sobrien case 16: return "SHT_PREINIT_ARRAY"; 313109329Sobrien case 17: return "SHT_GROUP"; 314109329Sobrien case 18: return "SHT_SYMTAB_SHNDX"; 315109332Sobrien /* 0x60000000 - 0x6fffffff operating system-specific semantics */ 316109329Sobrien case 0x6ffffff0: return "XXX:VERSYM"; 317109329Sobrien case 0x6ffffff7: return "SHT_GNU_LIBLIST"; 318109329Sobrien case 0x6ffffffc: return "XXX:VERDEF"; 319109329Sobrien case 0x6ffffffd: return "SHT_SUNW(GNU)_verdef"; 320109329Sobrien case 0x6ffffffe: return "SHT_SUNW(GNU)_verneed"; 321109329Sobrien case 0x6fffffff: return "SHT_SUNW(GNU)_versym"; 322109332Sobrien /* 0x70000000 - 0x7fffffff processor-specific semantics */ 323109457Smarcel case 0x70000000: return "SHT_IA_64_EXT"; 324109457Smarcel case 0x70000001: return "SHT_IA_64_UNWIND"; 325109329Sobrien case 0x7ffffffd: return "XXX:AUXILIARY"; 326109329Sobrien case 0x7fffffff: return "XXX:FILTER"; 327109332Sobrien /* 0x80000000 - 0xffffffff application programs */ 328109329Sobrien default: return "ERROR: SHT NOT DEFINED"; 329109329Sobrien } 330109313Sobrien}; 331109313Sobrien 332110256Sobrienconst char *sh_flags[] = { 333109313Sobrien "", "SHF_WRITE", "SHF_ALLOC", "SHF_WRITE|SHF_ALLOC", "SHF_EXECINSTR", 334109313Sobrien "SHF_WRITE|SHF_EXECINSTR", "SHF_ALLOC|SHF_EXECINSTR", 335109313Sobrien "SHF_WRITE|SHF_ALLOC|SHF_EXECINSTR" 336109313Sobrien}; 337109313Sobrien 338110256Sobrienconst char *st_types[] = { 339109313Sobrien "STT_NOTYPE", "STT_OBJECT", "STT_FUNC", "STT_SECTION", "STT_FILE" 340109313Sobrien}; 341109313Sobrien 342110256Sobrienconst char *st_bindings[] = { 343109313Sobrien "STB_LOCAL", "STB_GLOBAL", "STB_WEAK" 344109313Sobrien}; 345109313Sobrien 346109313Sobrienchar *dynstr; 347109313Sobrienchar *shstrtab; 348109313Sobrienchar *strtab; 349109313SobrienFILE *out; 350109313Sobrien 351109313Sobrienu_int64_t elf_get_byte(Elf32_Ehdr *e, void *base, elf_member_t member); 352109313Sobrienu_int64_t elf_get_quarter(Elf32_Ehdr *e, void *base, elf_member_t member); 353109313Sobrienu_int64_t elf_get_half(Elf32_Ehdr *e, void *base, elf_member_t member); 354109313Sobrienu_int64_t elf_get_word(Elf32_Ehdr *e, void *base, elf_member_t member); 355109313Sobrienu_int64_t elf_get_quad(Elf32_Ehdr *e, void *base, elf_member_t member); 356109313Sobrien 357110252Sobrienvoid elf_print_ehdr(Elf32_Ehdr *e); 358110252Sobrienvoid elf_print_phdr(Elf32_Ehdr *e, void *p); 359110252Sobrienvoid elf_print_shdr(Elf32_Ehdr *e, void *sh); 360110252Sobrienvoid elf_print_symtab(Elf32_Ehdr *e, void *sh, char *str); 361110252Sobrienvoid elf_print_dynamic(Elf32_Ehdr *e, void *sh); 362110252Sobrienvoid elf_print_rel(Elf32_Ehdr *e, void *r); 363110252Sobrienvoid elf_print_rela(Elf32_Ehdr *e, void *ra); 364110252Sobrienvoid elf_print_interp(Elf32_Ehdr *e, void *p); 365110252Sobrienvoid elf_print_got(Elf32_Ehdr *e, void *sh); 366110252Sobrienvoid elf_print_hash(Elf32_Ehdr *e, void *sh); 367110252Sobrienvoid elf_print_note(Elf32_Ehdr *e, void *sh); 368109313Sobrien 369109313Sobrienvoid usage(void); 370109313Sobrien 371109313Sobrienint 372109313Sobrienmain(int ac, char **av) 373109313Sobrien{ 374109313Sobrien u_int64_t phoff; 375109313Sobrien u_int64_t shoff; 376109313Sobrien u_int64_t phentsize; 377109313Sobrien u_int64_t phnum; 378109313Sobrien u_int64_t shentsize; 379109313Sobrien u_int64_t shnum; 380109313Sobrien u_int64_t shstrndx; 381109313Sobrien u_int64_t offset; 382109313Sobrien u_int64_t name; 383109313Sobrien u_int64_t type; 384109313Sobrien struct stat sb; 385109313Sobrien u_int flags; 386110252Sobrien Elf32_Ehdr *e; 387109313Sobrien void *p; 388109313Sobrien void *sh; 389109313Sobrien void *v; 390109313Sobrien int fd; 391109313Sobrien int ch; 392109313Sobrien int i; 393109313Sobrien 394109313Sobrien out = stdout; 395109313Sobrien flags = 0; 396109313Sobrien while ((ch = getopt(ac, av, "acdeiGhnprsw:")) != -1) 397109313Sobrien switch (ch) { 398109313Sobrien case 'a': 399109313Sobrien flags = ED_ALL; 400109313Sobrien break; 401109313Sobrien case 'c': 402109313Sobrien flags |= ED_SHDR; 403109313Sobrien break; 404109313Sobrien case 'd': 405109313Sobrien flags |= ED_DYN; 406109313Sobrien break; 407109313Sobrien case 'e': 408109313Sobrien flags |= ED_EHDR; 409109313Sobrien break; 410109313Sobrien case 'i': 411109313Sobrien flags |= ED_INTERP; 412109313Sobrien break; 413109313Sobrien case 'G': 414109313Sobrien flags |= ED_GOT; 415109313Sobrien break; 416109313Sobrien case 'h': 417109313Sobrien flags |= ED_HASH; 418109313Sobrien break; 419109313Sobrien case 'n': 420109313Sobrien flags |= ED_NOTE; 421109313Sobrien break; 422109313Sobrien case 'p': 423109313Sobrien flags |= ED_PHDR; 424109313Sobrien break; 425109313Sobrien case 'r': 426109313Sobrien flags |= ED_REL; 427109313Sobrien break; 428109313Sobrien case 's': 429109313Sobrien flags |= ED_SYMTAB; 430109313Sobrien break; 431109313Sobrien case 'w': 432109313Sobrien if ((out = fopen(optarg, "w")) == NULL) 433109313Sobrien err(1, "%s", optarg); 434109313Sobrien break; 435109313Sobrien case '?': 436109313Sobrien default: 437109313Sobrien usage(); 438109313Sobrien } 439109313Sobrien ac -= optind; 440109313Sobrien av += optind; 441109313Sobrien if (ac == 0 || flags == 0) 442109313Sobrien usage(); 443109313Sobrien if ((fd = open(*av, O_RDONLY)) < 0 || 444109313Sobrien fstat(fd, &sb) < 0) 445117009Sru err(1, "%s", *av); 446109313Sobrien e = mmap(NULL, sb.st_size, PROT_READ, MAP_SHARED, fd, 0); 447109313Sobrien if (e == MAP_FAILED) 448109313Sobrien err(1, NULL); 449109313Sobrien if (!IS_ELF(*(Elf32_Ehdr *)e)) 450109313Sobrien errx(1, "not an elf file"); 451109313Sobrien phoff = elf_get_off(e, e, E_PHOFF); 452109313Sobrien shoff = elf_get_off(e, e, E_SHOFF); 453109313Sobrien phentsize = elf_get_quarter(e, e, E_PHENTSIZE); 454109313Sobrien phnum = elf_get_quarter(e, e, E_PHNUM); 455109313Sobrien shentsize = elf_get_quarter(e, e, E_SHENTSIZE); 456109313Sobrien shnum = elf_get_quarter(e, e, E_SHNUM); 457109313Sobrien shstrndx = elf_get_quarter(e, e, E_SHSTRNDX); 458110256Sobrien p = (char *)e + phoff; 459110256Sobrien sh = (char *)e + shoff; 460110256Sobrien offset = elf_get_off(e, (char *)sh + shstrndx * shentsize, SH_OFFSET); 461110252Sobrien shstrtab = (char *)e + offset; 462110256Sobrien for (i = 0; (u_int64_t)i < shnum; i++) { 463110256Sobrien name = elf_get_word(e, (char *)sh + i * shentsize, SH_NAME); 464110256Sobrien offset = elf_get_off(e, (char *)sh + i * shentsize, SH_OFFSET); 465109313Sobrien if (strcmp(shstrtab + name, ".strtab") == 0) 466110252Sobrien strtab = (char *)e + offset; 467109313Sobrien if (strcmp(shstrtab + name, ".dynstr") == 0) 468110252Sobrien dynstr = (char *)e + offset; 469109313Sobrien } 470109313Sobrien if (flags & ED_EHDR) 471109313Sobrien elf_print_ehdr(e); 472109313Sobrien if (flags & ED_PHDR) 473109313Sobrien elf_print_phdr(e, p); 474109313Sobrien if (flags & ED_SHDR) 475109313Sobrien elf_print_shdr(e, sh); 476110256Sobrien for (i = 0; (u_int64_t)i < phnum; i++) { 477110256Sobrien v = (char *)p + i * phentsize; 478109313Sobrien type = elf_get_word(e, v, P_TYPE); 479109313Sobrien switch (type) { 480109313Sobrien case PT_INTERP: 481109313Sobrien if (flags & ED_INTERP) 482109313Sobrien elf_print_interp(e, v); 483109313Sobrien break; 484109313Sobrien case PT_NULL: 485109313Sobrien case PT_LOAD: 486109313Sobrien case PT_DYNAMIC: 487109313Sobrien case PT_NOTE: 488109313Sobrien case PT_SHLIB: 489109313Sobrien case PT_PHDR: 490109313Sobrien break; 491109313Sobrien } 492109313Sobrien } 493110256Sobrien for (i = 0; (u_int64_t)i < shnum; i++) { 494110256Sobrien v = (char *)sh + i * shentsize; 495109313Sobrien type = elf_get_word(e, v, SH_TYPE); 496109313Sobrien switch (type) { 497109313Sobrien case SHT_SYMTAB: 498109313Sobrien if (flags & ED_SYMTAB) 499109313Sobrien elf_print_symtab(e, v, strtab); 500109313Sobrien break; 501109313Sobrien case SHT_DYNAMIC: 502109313Sobrien if (flags & ED_DYN) 503109313Sobrien elf_print_dynamic(e, v); 504109313Sobrien break; 505109313Sobrien case SHT_RELA: 506109313Sobrien if (flags & ED_REL) 507109313Sobrien elf_print_rela(e, v); 508109313Sobrien break; 509109313Sobrien case SHT_REL: 510109313Sobrien if (flags & ED_REL) 511109313Sobrien elf_print_rel(e, v); 512109313Sobrien break; 513109313Sobrien case SHT_NOTE: 514109313Sobrien name = elf_get_word(e, v, SH_NAME); 515109313Sobrien if (flags & ED_NOTE && 516109313Sobrien strcmp(shstrtab + name, ".note.ABI-tag") == 0) 517109313Sobrien elf_print_note(e, v); 518109313Sobrien break; 519109313Sobrien case SHT_DYNSYM: 520109313Sobrien if (flags & ED_SYMTAB) 521109313Sobrien elf_print_symtab(e, v, dynstr); 522109313Sobrien break; 523109313Sobrien case SHT_PROGBITS: 524109313Sobrien name = elf_get_word(e, v, SH_NAME); 525109313Sobrien if (flags & ED_GOT && 526109313Sobrien strcmp(shstrtab + name, ".got") == 0) 527109313Sobrien elf_print_got(e, v); 528109313Sobrien break; 529109313Sobrien case SHT_HASH: 530109313Sobrien if (flags & ED_HASH) 531109313Sobrien elf_print_hash(e, v); 532109313Sobrien break; 533109313Sobrien case SHT_NULL: 534109313Sobrien case SHT_STRTAB: 535109313Sobrien case SHT_NOBITS: 536109313Sobrien case SHT_SHLIB: 537109313Sobrien break; 538109313Sobrien } 539109313Sobrien } 540109313Sobrien 541109313Sobrien return 0; 542109313Sobrien} 543109313Sobrien 544109313Sobrienvoid 545110252Sobrienelf_print_ehdr(Elf32_Ehdr *e) 546109313Sobrien{ 547109313Sobrien u_int64_t class; 548109313Sobrien u_int64_t data; 549109313Sobrien u_int64_t osabi; 550109313Sobrien u_int64_t type; 551109313Sobrien u_int64_t machine; 552109313Sobrien u_int64_t version; 553109313Sobrien u_int64_t entry; 554109313Sobrien u_int64_t phoff; 555109313Sobrien u_int64_t shoff; 556109313Sobrien u_int64_t flags; 557109313Sobrien u_int64_t ehsize; 558109313Sobrien u_int64_t phentsize; 559109313Sobrien u_int64_t phnum; 560109313Sobrien u_int64_t shentsize; 561109313Sobrien u_int64_t shnum; 562109313Sobrien u_int64_t shstrndx; 563109313Sobrien 564109313Sobrien class = elf_get_byte(e, e, E_CLASS); 565109313Sobrien data = elf_get_byte(e, e, E_DATA); 566109313Sobrien osabi = elf_get_byte(e, e, E_OSABI); 567109313Sobrien type = elf_get_quarter(e, e, E_TYPE); 568109313Sobrien machine = elf_get_quarter(e, e, E_MACHINE); 569109313Sobrien version = elf_get_word(e, e, E_VERSION); 570109313Sobrien entry = elf_get_addr(e, e, E_ENTRY); 571109313Sobrien phoff = elf_get_off(e, e, E_PHOFF); 572109313Sobrien shoff = elf_get_off(e, e, E_SHOFF); 573109313Sobrien flags = elf_get_word(e, e, E_FLAGS); 574109313Sobrien ehsize = elf_get_quarter(e, e, E_EHSIZE); 575109313Sobrien phentsize = elf_get_quarter(e, e, E_PHENTSIZE); 576109313Sobrien phnum = elf_get_quarter(e, e, E_PHNUM); 577109313Sobrien shentsize = elf_get_quarter(e, e, E_SHENTSIZE); 578109313Sobrien shnum = elf_get_quarter(e, e, E_SHNUM); 579109313Sobrien shstrndx = elf_get_quarter(e, e, E_SHSTRNDX); 580109313Sobrien fprintf(out, "\nelf header:\n"); 581109313Sobrien fprintf(out, "\n"); 582109313Sobrien fprintf(out, "\te_ident: %s %s %s\n", ei_classes[class], ei_data[data], 583109313Sobrien ei_abis[osabi]); 584109313Sobrien fprintf(out, "\te_type: %s\n", e_types[type]); 585109457Smarcel fprintf(out, "\te_machine: %s\n", e_machines(machine)); 586109313Sobrien fprintf(out, "\te_version: %s\n", ei_versions[version]); 587110257Sobrien fprintf(out, "\te_entry: %#jx\n", (intmax_t)entry); 588110257Sobrien fprintf(out, "\te_phoff: %jd\n", (intmax_t)phoff); 589110257Sobrien fprintf(out, "\te_shoff: %jd\n", (intmax_t)shoff); 590110257Sobrien fprintf(out, "\te_flags: %jd\n", (intmax_t)flags); 591110257Sobrien fprintf(out, "\te_ehsize: %jd\n", (intmax_t)ehsize); 592110257Sobrien fprintf(out, "\te_phentsize: %jd\n", (intmax_t)phentsize); 593110257Sobrien fprintf(out, "\te_phnum: %jd\n", (intmax_t)phnum); 594110257Sobrien fprintf(out, "\te_shentsize: %jd\n", (intmax_t)shentsize); 595110257Sobrien fprintf(out, "\te_shnum: %jd\n", (intmax_t)shnum); 596110257Sobrien fprintf(out, "\te_shstrndx: %jd\n", (intmax_t)shstrndx); 597109313Sobrien} 598109313Sobrien 599109313Sobrienvoid 600110252Sobrienelf_print_phdr(Elf32_Ehdr *e, void *p) 601109313Sobrien{ 602109313Sobrien u_int64_t phentsize; 603109313Sobrien u_int64_t phnum; 604109313Sobrien u_int64_t type; 605109313Sobrien u_int64_t offset; 606109313Sobrien u_int64_t vaddr; 607109313Sobrien u_int64_t paddr; 608109313Sobrien u_int64_t filesz; 609109313Sobrien u_int64_t memsz; 610109313Sobrien u_int64_t flags; 611109313Sobrien u_int64_t align; 612109313Sobrien void *v; 613109313Sobrien int i; 614109313Sobrien 615109313Sobrien phentsize = elf_get_quarter(e, e, E_PHENTSIZE); 616109313Sobrien phnum = elf_get_quarter(e, e, E_PHNUM); 617109313Sobrien fprintf(out, "\nprogram header:\n"); 618110256Sobrien for (i = 0; (u_int64_t)i < phnum; i++) { 619110256Sobrien v = (char *)p + i * phentsize; 620109313Sobrien type = elf_get_word(e, v, P_TYPE); 621109313Sobrien offset = elf_get_off(e, v, P_OFFSET); 622109313Sobrien vaddr = elf_get_addr(e, v, P_VADDR); 623109313Sobrien paddr = elf_get_addr(e, v, P_PADDR); 624109313Sobrien filesz = elf_get_size(e, v, P_FILESZ); 625109313Sobrien memsz = elf_get_size(e, v, P_MEMSZ); 626109313Sobrien flags = elf_get_word(e, v, P_FLAGS); 627109313Sobrien align = elf_get_size(e, v, P_ALIGN); 628109313Sobrien fprintf(out, "\n"); 629109313Sobrien fprintf(out, "entry: %d\n", i); 630109313Sobrien fprintf(out, "\tp_type: %s\n", p_types[type & 0x7]); 631110257Sobrien fprintf(out, "\tp_offset: %jd\n", (intmax_t)offset); 632110257Sobrien fprintf(out, "\tp_vaddr: %#jx\n", (intmax_t)vaddr); 633110257Sobrien fprintf(out, "\tp_paddr: %#jx\n", (intmax_t)paddr); 634110257Sobrien fprintf(out, "\tp_filesz: %jd\n", (intmax_t)filesz); 635110257Sobrien fprintf(out, "\tp_memsz: %jd\n", (intmax_t)memsz); 636109313Sobrien fprintf(out, "\tp_flags: %s\n", p_flags[flags]); 637110257Sobrien fprintf(out, "\tp_align: %jd\n", (intmax_t)align); 638109313Sobrien } 639109313Sobrien} 640109313Sobrien 641109313Sobrienvoid 642110252Sobrienelf_print_shdr(Elf32_Ehdr *e, void *sh) 643109313Sobrien{ 644109313Sobrien u_int64_t shentsize; 645109313Sobrien u_int64_t shnum; 646109313Sobrien u_int64_t name; 647109313Sobrien u_int64_t type; 648109313Sobrien u_int64_t flags; 649109313Sobrien u_int64_t addr; 650109313Sobrien u_int64_t offset; 651109313Sobrien u_int64_t size; 652110256Sobrien u_int64_t shlink; 653109313Sobrien u_int64_t info; 654109313Sobrien u_int64_t addralign; 655109313Sobrien u_int64_t entsize; 656109313Sobrien void *v; 657109313Sobrien int i; 658109313Sobrien 659109313Sobrien shentsize = elf_get_quarter(e, e, E_SHENTSIZE); 660109313Sobrien shnum = elf_get_quarter(e, e, E_SHNUM); 661109313Sobrien fprintf(out, "\nsection header:\n"); 662110256Sobrien for (i = 0; (u_int64_t)i < shnum; i++) { 663110256Sobrien v = (char *)sh + i * shentsize; 664109313Sobrien name = elf_get_word(e, v, SH_NAME); 665109313Sobrien type = elf_get_word(e, v, SH_TYPE); 666109313Sobrien flags = elf_get_word(e, v, SH_FLAGS); 667109313Sobrien addr = elf_get_addr(e, v, SH_ADDR); 668109313Sobrien offset = elf_get_off(e, v, SH_OFFSET); 669109313Sobrien size = elf_get_size(e, v, SH_SIZE); 670110256Sobrien shlink = elf_get_word(e, v, SH_LINK); 671109313Sobrien info = elf_get_word(e, v, SH_INFO); 672109313Sobrien addralign = elf_get_size(e, v, SH_ADDRALIGN); 673109313Sobrien entsize = elf_get_size(e, v, SH_ENTSIZE); 674109313Sobrien fprintf(out, "\n"); 675109313Sobrien fprintf(out, "entry: %d\n", i); 676109313Sobrien fprintf(out, "\tsh_name: %s\n", shstrtab + name); 677109329Sobrien fprintf(out, "\tsh_type: %s\n", sh_types(type)); 678109313Sobrien fprintf(out, "\tsh_flags: %s\n", sh_flags[flags & 0x7]); 679110257Sobrien fprintf(out, "\tsh_addr: %#jx\n", addr); 680110257Sobrien fprintf(out, "\tsh_offset: %jd\n", (intmax_t)offset); 681110257Sobrien fprintf(out, "\tsh_size: %jd\n", (intmax_t)size); 682110257Sobrien fprintf(out, "\tsh_link: %jd\n", (intmax_t)shlink); 683110257Sobrien fprintf(out, "\tsh_info: %jd\n", (intmax_t)info); 684110257Sobrien fprintf(out, "\tsh_addralign: %jd\n", (intmax_t)addralign); 685110257Sobrien fprintf(out, "\tsh_entsize: %jd\n", (intmax_t)entsize); 686109313Sobrien } 687109313Sobrien} 688109313Sobrien 689109313Sobrienvoid 690110252Sobrienelf_print_symtab(Elf32_Ehdr *e, void *sh, char *str) 691109313Sobrien{ 692109313Sobrien u_int64_t offset; 693109313Sobrien u_int64_t entsize; 694109313Sobrien u_int64_t size; 695109313Sobrien u_int64_t name; 696109313Sobrien u_int64_t value; 697109313Sobrien u_int64_t info; 698109313Sobrien u_int64_t shndx; 699109313Sobrien void *st; 700109313Sobrien int len; 701109313Sobrien int i; 702109313Sobrien 703109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 704109313Sobrien entsize = elf_get_size(e, sh, SH_ENTSIZE); 705109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 706109313Sobrien name = elf_get_word(e, sh, SH_NAME); 707109313Sobrien len = size / entsize; 708109313Sobrien fprintf(out, "\nsymbol table (%s):\n", shstrtab + name); 709109313Sobrien for (i = 0; i < len; i++) { 710110256Sobrien st = (char *)e + offset + i * entsize; 711109313Sobrien name = elf_get_word(e, st, ST_NAME); 712109313Sobrien value = elf_get_addr(e, st, ST_VALUE); 713109313Sobrien size = elf_get_size(e, st, ST_SIZE); 714109313Sobrien info = elf_get_byte(e, st, ST_INFO); 715109313Sobrien shndx = elf_get_quarter(e, st, ST_SHNDX); 716109313Sobrien fprintf(out, "\n"); 717109313Sobrien fprintf(out, "entry: %d\n", i); 718109313Sobrien fprintf(out, "\tst_name: %s\n", str + name); 719110257Sobrien fprintf(out, "\tst_value: %#jx\n", value); 720110257Sobrien fprintf(out, "\tst_size: %jd\n", (intmax_t)size); 721109313Sobrien fprintf(out, "\tst_info: %s %s\n", 722109313Sobrien st_types[ELF32_ST_TYPE(info)], 723109313Sobrien st_bindings[ELF32_ST_BIND(info)]); 724110257Sobrien fprintf(out, "\tst_shndx: %jd\n", (intmax_t)shndx); 725109313Sobrien } 726109313Sobrien} 727109313Sobrien 728109313Sobrienvoid 729110252Sobrienelf_print_dynamic(Elf32_Ehdr *e, void *sh) 730109313Sobrien{ 731109313Sobrien u_int64_t offset; 732109313Sobrien u_int64_t entsize; 733109313Sobrien u_int64_t size; 734109313Sobrien int64_t tag; 735109313Sobrien u_int64_t ptr; 736109313Sobrien u_int64_t val; 737109313Sobrien void *d; 738109313Sobrien int i; 739109313Sobrien 740109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 741109313Sobrien entsize = elf_get_size(e, sh, SH_ENTSIZE); 742109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 743109313Sobrien fprintf(out, "\ndynamic:\n"); 744110256Sobrien for (i = 0; (u_int64_t)i < size / entsize; i++) { 745110256Sobrien d = (char *)e + offset + i * entsize; 746109313Sobrien tag = elf_get_size(e, d, D_TAG); 747109313Sobrien ptr = elf_get_size(e, d, D_PTR); 748109313Sobrien val = elf_get_addr(e, d, D_VAL); 749109313Sobrien fprintf(out, "\n"); 750109313Sobrien fprintf(out, "entry: %d\n", i); 751109332Sobrien fprintf(out, "\td_tag: %s\n", d_tags(tag)); 752109313Sobrien switch (tag) { 753109313Sobrien case DT_NEEDED: 754109313Sobrien case DT_SONAME: 755109313Sobrien case DT_RPATH: 756109313Sobrien fprintf(out, "\td_val: %s\n", dynstr + val); 757109313Sobrien break; 758109313Sobrien case DT_PLTRELSZ: 759109313Sobrien case DT_RELA: 760109313Sobrien case DT_RELASZ: 761109313Sobrien case DT_RELAENT: 762109313Sobrien case DT_STRSZ: 763109313Sobrien case DT_SYMENT: 764109313Sobrien case DT_RELSZ: 765109313Sobrien case DT_RELENT: 766109313Sobrien case DT_PLTREL: 767110257Sobrien fprintf(out, "\td_val: %jd\n", (intmax_t)val); 768109313Sobrien break; 769109313Sobrien case DT_PLTGOT: 770109313Sobrien case DT_HASH: 771109313Sobrien case DT_STRTAB: 772109313Sobrien case DT_SYMTAB: 773109313Sobrien case DT_INIT: 774109313Sobrien case DT_FINI: 775109313Sobrien case DT_REL: 776109313Sobrien case DT_JMPREL: 777110257Sobrien fprintf(out, "\td_ptr: %#jx\n", ptr); 778109313Sobrien break; 779109313Sobrien case DT_NULL: 780109313Sobrien case DT_SYMBOLIC: 781109313Sobrien case DT_DEBUG: 782109313Sobrien case DT_TEXTREL: 783109313Sobrien break; 784109313Sobrien } 785109313Sobrien } 786109313Sobrien} 787109313Sobrien 788109313Sobrienvoid 789110252Sobrienelf_print_rela(Elf32_Ehdr *e, void *sh) 790109313Sobrien{ 791109313Sobrien u_int64_t offset; 792109313Sobrien u_int64_t entsize; 793109313Sobrien u_int64_t size; 794109313Sobrien u_int64_t name; 795109313Sobrien u_int64_t info; 796109313Sobrien int64_t addend; 797109313Sobrien void *ra; 798109313Sobrien void *v; 799109313Sobrien int i; 800109313Sobrien 801109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 802109313Sobrien entsize = elf_get_size(e, sh, SH_ENTSIZE); 803109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 804109313Sobrien name = elf_get_word(e, sh, SH_NAME); 805110256Sobrien v = (char *)e + offset; 806109313Sobrien fprintf(out, "\nrelocation with addend (%s):\n", shstrtab + name); 807110256Sobrien for (i = 0; (u_int64_t)i < size / entsize; i++) { 808110256Sobrien ra = (char *)v + i * entsize; 809109313Sobrien offset = elf_get_addr(e, ra, RA_OFFSET); 810109313Sobrien info = elf_get_word(e, ra, RA_INFO); 811109313Sobrien addend = elf_get_off(e, ra, RA_ADDEND); 812109313Sobrien fprintf(out, "\n"); 813109313Sobrien fprintf(out, "entry: %d\n", i); 814110257Sobrien fprintf(out, "\tr_offset: %#jx\n", offset); 815110257Sobrien fprintf(out, "\tr_info: %jd\n", (intmax_t)info); 816110257Sobrien fprintf(out, "\tr_addend: %jd\n", (intmax_t)addend); 817109313Sobrien } 818109313Sobrien} 819109313Sobrien 820109313Sobrienvoid 821110252Sobrienelf_print_rel(Elf32_Ehdr *e, void *sh) 822109313Sobrien{ 823109313Sobrien u_int64_t offset; 824109313Sobrien u_int64_t entsize; 825109313Sobrien u_int64_t size; 826109313Sobrien u_int64_t name; 827109313Sobrien u_int64_t info; 828109313Sobrien void *r; 829109313Sobrien void *v; 830109313Sobrien int i; 831109313Sobrien 832109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 833109313Sobrien entsize = elf_get_size(e, sh, SH_ENTSIZE); 834109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 835109313Sobrien name = elf_get_word(e, sh, SH_NAME); 836110256Sobrien v = (char *)e + offset; 837109313Sobrien fprintf(out, "\nrelocation (%s):\n", shstrtab + name); 838110256Sobrien for (i = 0; (u_int64_t)i < size / entsize; i++) { 839110256Sobrien r = (char *)v + i * entsize; 840109313Sobrien offset = elf_get_addr(e, r, R_OFFSET); 841109313Sobrien info = elf_get_word(e, r, R_INFO); 842109313Sobrien fprintf(out, "\n"); 843109313Sobrien fprintf(out, "entry: %d\n", i); 844110257Sobrien fprintf(out, "\tr_offset: %#jx\n", offset); 845110257Sobrien fprintf(out, "\tr_info: %jd\n", (intmax_t)info); 846109313Sobrien } 847109313Sobrien} 848109313Sobrien 849109313Sobrienvoid 850110252Sobrienelf_print_interp(Elf32_Ehdr *e, void *p) 851109313Sobrien{ 852109313Sobrien u_int64_t offset; 853109313Sobrien char *s; 854109313Sobrien 855109313Sobrien offset = elf_get_off(e, p, P_OFFSET); 856110252Sobrien s = (char *)e + offset; 857109313Sobrien fprintf(out, "\ninterp:\n"); 858109313Sobrien fprintf(out, "\t%s\n", s); 859109313Sobrien} 860109313Sobrien 861109313Sobrienvoid 862110252Sobrienelf_print_got(Elf32_Ehdr *e, void *sh) 863109313Sobrien{ 864109313Sobrien u_int64_t offset; 865109313Sobrien u_int64_t addralign; 866109313Sobrien u_int64_t size; 867109313Sobrien u_int64_t addr; 868109313Sobrien void *v; 869109313Sobrien int i; 870109313Sobrien 871109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 872109313Sobrien addralign = elf_get_size(e, sh, SH_ADDRALIGN); 873109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 874110256Sobrien v = (char *)e + offset; 875109313Sobrien fprintf(out, "\nglobal offset table:\n"); 876110256Sobrien for (i = 0; (u_int64_t)i < size / addralign; i++) { 877110256Sobrien addr = elf_get_addr(e, (char *)v + i * addralign, 0); 878109313Sobrien fprintf(out, "\n"); 879109313Sobrien fprintf(out, "entry: %d\n", i); 880110257Sobrien fprintf(out, "\t%#jx\n", addr); 881109313Sobrien } 882109313Sobrien} 883109313Sobrien 884109313Sobrienvoid 885110256Sobrienelf_print_hash(Elf32_Ehdr *e __unused, void *sh __unused) 886109313Sobrien{ 887109313Sobrien} 888109313Sobrien 889109313Sobrienvoid 890110252Sobrienelf_print_note(Elf32_Ehdr *e, void *sh) 891109313Sobrien{ 892109313Sobrien u_int64_t offset; 893109313Sobrien u_int64_t size; 894109313Sobrien u_int64_t name; 895109313Sobrien u_int32_t namesz; 896109313Sobrien u_int32_t descsz; 897109313Sobrien u_int32_t type; 898109313Sobrien u_int32_t desc; 899110256Sobrien char *n, *s; 900109313Sobrien 901109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 902109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 903109313Sobrien name = elf_get_word(e, sh, SH_NAME); 904110256Sobrien n = (char *)e + offset; 905109313Sobrien fprintf(out, "\nnote (%s):\n", shstrtab + name); 906110256Sobrien while (n < ((char *)e + offset + size)) { 907109313Sobrien namesz = elf_get_word(e, n, N_NAMESZ); 908109313Sobrien descsz = elf_get_word(e, n, N_DESCSZ); 909109313Sobrien type = elf_get_word(e, n, N_TYPE); 910110256Sobrien s = n + sizeof(Elf_Note); 911110256Sobrien desc = elf_get_word(e, n + sizeof(Elf_Note) + namesz, 0); 912109313Sobrien fprintf(out, "\t%s %d\n", s, desc); 913109313Sobrien n += sizeof(Elf_Note) + namesz + descsz; 914109313Sobrien } 915109313Sobrien} 916109313Sobrien 917109313Sobrienu_int64_t 918109313Sobrienelf_get_byte(Elf32_Ehdr *e, void *base, elf_member_t member) 919109313Sobrien{ 920109313Sobrien u_int64_t val; 921109313Sobrien 922109313Sobrien val = 0; 923109313Sobrien switch (e->e_ident[EI_CLASS]) { 924109313Sobrien case ELFCLASS32: 925118680Smarcel val = ((char *)base)[elf32_offsets[member]]; 926109313Sobrien break; 927109313Sobrien case ELFCLASS64: 928118680Smarcel val = ((char *)base)[elf64_offsets[member]]; 929109313Sobrien break; 930109313Sobrien case ELFCLASSNONE: 931109313Sobrien errx(1, "invalid class"); 932109313Sobrien } 933109313Sobrien 934109313Sobrien return val; 935109313Sobrien} 936109313Sobrien 937109313Sobrienu_int64_t 938109313Sobrienelf_get_quarter(Elf32_Ehdr *e, void *base, elf_member_t member) 939109313Sobrien{ 940109313Sobrien u_int64_t val; 941109313Sobrien 942109313Sobrien val = 0; 943109313Sobrien switch (e->e_ident[EI_CLASS]) { 944109313Sobrien case ELFCLASS32: 945118680Smarcel base = (char *)base + elf32_offsets[member]; 946109313Sobrien switch (e->e_ident[EI_DATA]) { 947109313Sobrien case ELFDATA2MSB: 948118680Smarcel val = be16dec(base); 949109313Sobrien break; 950109313Sobrien case ELFDATA2LSB: 951118680Smarcel val = le16dec(base); 952109313Sobrien break; 953109313Sobrien case ELFDATANONE: 954109313Sobrien errx(1, "invalid data format"); 955109313Sobrien } 956109313Sobrien break; 957109313Sobrien case ELFCLASS64: 958118680Smarcel base = (char *)base + elf64_offsets[member]; 959109313Sobrien switch (e->e_ident[EI_DATA]) { 960109313Sobrien case ELFDATA2MSB: 961118680Smarcel val = be16dec(base); 962109313Sobrien break; 963109313Sobrien case ELFDATA2LSB: 964118680Smarcel val = le16dec(base); 965109313Sobrien break; 966109313Sobrien case ELFDATANONE: 967109313Sobrien errx(1, "invalid data format"); 968109313Sobrien } 969109313Sobrien break; 970109313Sobrien case ELFCLASSNONE: 971109313Sobrien errx(1, "invalid class"); 972109313Sobrien } 973109313Sobrien 974109313Sobrien return val; 975109313Sobrien} 976109313Sobrien 977109313Sobrienu_int64_t 978109313Sobrienelf_get_half(Elf32_Ehdr *e, void *base, elf_member_t member) 979109313Sobrien{ 980109313Sobrien u_int64_t val; 981109313Sobrien 982109313Sobrien val = 0; 983109313Sobrien switch (e->e_ident[EI_CLASS]) { 984109313Sobrien case ELFCLASS32: 985118680Smarcel base = (char *)base + elf32_offsets[member]; 986109313Sobrien switch (e->e_ident[EI_DATA]) { 987109313Sobrien case ELFDATA2MSB: 988118680Smarcel val = be16dec(base); 989109313Sobrien break; 990109313Sobrien case ELFDATA2LSB: 991118680Smarcel val = le16dec(base); 992109313Sobrien break; 993109313Sobrien case ELFDATANONE: 994109313Sobrien errx(1, "invalid data format"); 995109313Sobrien } 996109313Sobrien break; 997109313Sobrien case ELFCLASS64: 998118680Smarcel base = (char *)base + elf64_offsets[member]; 999109313Sobrien switch (e->e_ident[EI_DATA]) { 1000109313Sobrien case ELFDATA2MSB: 1001118680Smarcel val = be32dec(base); 1002109313Sobrien break; 1003109313Sobrien case ELFDATA2LSB: 1004118680Smarcel val = le32dec(base); 1005109313Sobrien break; 1006109313Sobrien case ELFDATANONE: 1007109313Sobrien errx(1, "invalid data format"); 1008109313Sobrien } 1009109313Sobrien break; 1010109313Sobrien case ELFCLASSNONE: 1011109313Sobrien errx(1, "invalid class"); 1012109313Sobrien } 1013109313Sobrien 1014109313Sobrien return val; 1015109313Sobrien} 1016109313Sobrien 1017109313Sobrienu_int64_t 1018109313Sobrienelf_get_word(Elf32_Ehdr *e, void *base, elf_member_t member) 1019109313Sobrien{ 1020109313Sobrien u_int64_t val; 1021109313Sobrien 1022109313Sobrien val = 0; 1023109313Sobrien switch (e->e_ident[EI_CLASS]) { 1024109313Sobrien case ELFCLASS32: 1025118680Smarcel base = (char *)base + elf32_offsets[member]; 1026109313Sobrien switch (e->e_ident[EI_DATA]) { 1027109313Sobrien case ELFDATA2MSB: 1028118680Smarcel val = be32dec(base); 1029109313Sobrien break; 1030109313Sobrien case ELFDATA2LSB: 1031118680Smarcel val = le32dec(base); 1032109313Sobrien break; 1033109313Sobrien case ELFDATANONE: 1034109313Sobrien errx(1, "invalid data format"); 1035109313Sobrien } 1036109313Sobrien break; 1037109313Sobrien case ELFCLASS64: 1038118680Smarcel base = (char *)base + elf64_offsets[member]; 1039109313Sobrien switch (e->e_ident[EI_DATA]) { 1040109313Sobrien case ELFDATA2MSB: 1041118680Smarcel val = be32dec(base); 1042109313Sobrien break; 1043109313Sobrien case ELFDATA2LSB: 1044118680Smarcel val = le32dec(base); 1045109313Sobrien break; 1046109313Sobrien case ELFDATANONE: 1047109313Sobrien errx(1, "invalid data format"); 1048109313Sobrien } 1049109313Sobrien break; 1050109313Sobrien case ELFCLASSNONE: 1051109313Sobrien errx(1, "invalid class"); 1052109313Sobrien } 1053109313Sobrien 1054109313Sobrien return val; 1055109313Sobrien} 1056109313Sobrien 1057109313Sobrienu_int64_t 1058109313Sobrienelf_get_quad(Elf32_Ehdr *e, void *base, elf_member_t member) 1059109313Sobrien{ 1060109313Sobrien u_int64_t val; 1061109313Sobrien 1062109313Sobrien val = 0; 1063109313Sobrien switch (e->e_ident[EI_CLASS]) { 1064109313Sobrien case ELFCLASS32: 1065118680Smarcel base = (char *)base + elf32_offsets[member]; 1066109313Sobrien switch (e->e_ident[EI_DATA]) { 1067109313Sobrien case ELFDATA2MSB: 1068118680Smarcel val = be32dec(base); 1069109313Sobrien break; 1070109313Sobrien case ELFDATA2LSB: 1071118680Smarcel val = le32dec(base); 1072109313Sobrien break; 1073109313Sobrien case ELFDATANONE: 1074109313Sobrien errx(1, "invalid data format"); 1075109313Sobrien } 1076109313Sobrien break; 1077109313Sobrien case ELFCLASS64: 1078118680Smarcel base = (char *)base + elf64_offsets[member]; 1079109313Sobrien switch (e->e_ident[EI_DATA]) { 1080109313Sobrien case ELFDATA2MSB: 1081118680Smarcel val = be64dec(base); 1082109313Sobrien break; 1083109313Sobrien case ELFDATA2LSB: 1084118680Smarcel val = le64dec(base); 1085109313Sobrien break; 1086109313Sobrien case ELFDATANONE: 1087109313Sobrien errx(1, "invalid data format"); 1088109313Sobrien } 1089109313Sobrien break; 1090109313Sobrien case ELFCLASSNONE: 1091109313Sobrien errx(1, "invalid class"); 1092109313Sobrien } 1093109313Sobrien 1094109313Sobrien return val; 1095109313Sobrien} 1096109313Sobrien 1097109313Sobrienvoid 1098109313Sobrienusage(void) 1099109313Sobrien{ 1100117009Sru fprintf(stderr, "usage: elfdump -a | -cdeGhinprs [-w file] file\n"); 1101109313Sobrien exit(1); 1102109313Sobrien} 1103