elfdump.c revision 110252
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 110252 2003-02-02 22:16:05Z 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> 38109313Sobrien#include <stddef.h> 39109313Sobrien#include <stdio.h> 40109313Sobrien#include <stdlib.h> 41109313Sobrien#include <string.h> 42109313Sobrien#include <unistd.h> 43109313Sobrien 44109313Sobrien#define ED_DYN (1<<0) 45109313Sobrien#define ED_EHDR (1<<1) 46109313Sobrien#define ED_GOT (1<<2) 47109313Sobrien#define ED_HASH (1<<3) 48109313Sobrien#define ED_INTERP (1<<4) 49109313Sobrien#define ED_NOTE (1<<5) 50109313Sobrien#define ED_PHDR (1<<6) 51109313Sobrien#define ED_REL (1<<7) 52109313Sobrien#define ED_SHDR (1<<8) 53109313Sobrien#define ED_SYMTAB (1<<9) 54109313Sobrien#define ED_ALL ((1<<10)-1) 55109313Sobrien 56109313Sobrien#define elf_get_addr elf_get_quad 57109313Sobrien#define elf_get_off elf_get_quad 58109313Sobrien#define elf_get_size elf_get_quad 59109313Sobrien 60109313Sobrienenum elf_member { 61109313Sobrien D_TAG = 1, D_PTR, D_VAL, 62109313Sobrien 63109313Sobrien E_CLASS, E_DATA, E_OSABI, E_TYPE, E_MACHINE, E_VERSION, E_ENTRY, 64109313Sobrien E_PHOFF, E_SHOFF, E_FLAGS, E_EHSIZE, E_PHENTSIZE, E_PHNUM, E_SHENTSIZE, 65109313Sobrien E_SHNUM, E_SHSTRNDX, 66109313Sobrien 67109313Sobrien N_NAMESZ, N_DESCSZ, N_TYPE, 68109313Sobrien 69109313Sobrien P_TYPE, P_OFFSET, P_VADDR, P_PADDR, P_FILESZ, P_MEMSZ, P_FLAGS, 70109313Sobrien P_ALIGN, 71109313Sobrien 72109313Sobrien SH_NAME, SH_TYPE, SH_FLAGS, SH_ADDR, SH_OFFSET, SH_SIZE, SH_LINK, 73109313Sobrien SH_INFO, SH_ADDRALIGN, SH_ENTSIZE, 74109313Sobrien 75109313Sobrien ST_NAME, ST_VALUE, ST_SIZE, ST_INFO, ST_SHNDX, 76109313Sobrien 77109313Sobrien R_OFFSET, R_INFO, 78109313Sobrien 79109313Sobrien RA_OFFSET, RA_INFO, RA_ADDEND 80109313Sobrien}; 81109313Sobrien 82109313Sobrientypedef enum elf_member elf_member_t; 83109313Sobrien 84109313Sobrienint elf32_offsets[] = { 85109313Sobrien 0, 86109313Sobrien 87109313Sobrien offsetof(Elf32_Dyn, d_tag), offsetof(Elf32_Dyn, d_un.d_ptr), 88109313Sobrien offsetof(Elf32_Dyn, d_un.d_val), 89109313Sobrien 90109313Sobrien offsetof(Elf32_Ehdr, e_ident[EI_CLASS]), 91109313Sobrien offsetof(Elf32_Ehdr, e_ident[EI_DATA]), 92109313Sobrien offsetof(Elf32_Ehdr, e_ident[EI_OSABI]), 93109313Sobrien offsetof(Elf32_Ehdr, e_type), offsetof(Elf32_Ehdr, e_machine), 94109313Sobrien offsetof(Elf32_Ehdr, e_version), offsetof(Elf32_Ehdr, e_entry), 95109313Sobrien offsetof(Elf32_Ehdr, e_phoff), offsetof(Elf32_Ehdr, e_shoff), 96109313Sobrien offsetof(Elf32_Ehdr, e_flags), offsetof(Elf32_Ehdr, e_ehsize), 97109313Sobrien offsetof(Elf32_Ehdr, e_phentsize), offsetof(Elf32_Ehdr, e_phnum), 98109313Sobrien offsetof(Elf32_Ehdr, e_shentsize), offsetof(Elf32_Ehdr, e_shnum), 99109313Sobrien offsetof(Elf32_Ehdr, e_shstrndx), 100109313Sobrien 101109313Sobrien offsetof(Elf_Note, n_namesz), offsetof(Elf_Note, n_descsz), 102109313Sobrien offsetof(Elf_Note, n_type), 103109313Sobrien 104109313Sobrien offsetof(Elf32_Phdr, p_type), offsetof(Elf32_Phdr, p_offset), 105109313Sobrien offsetof(Elf32_Phdr, p_vaddr), offsetof(Elf32_Phdr, p_paddr), 106109313Sobrien offsetof(Elf32_Phdr, p_filesz), offsetof(Elf32_Phdr, p_memsz), 107109313Sobrien offsetof(Elf32_Phdr, p_flags), offsetof(Elf32_Phdr, p_align), 108109313Sobrien 109109313Sobrien offsetof(Elf32_Shdr, sh_name), offsetof(Elf32_Shdr, sh_type), 110109313Sobrien offsetof(Elf32_Shdr, sh_flags), offsetof(Elf32_Shdr, sh_addr), 111109313Sobrien offsetof(Elf32_Shdr, sh_offset), offsetof(Elf32_Shdr, sh_size), 112109313Sobrien offsetof(Elf32_Shdr, sh_link), offsetof(Elf32_Shdr, sh_info), 113109313Sobrien offsetof(Elf32_Shdr, sh_addralign), offsetof(Elf32_Shdr, sh_entsize), 114109313Sobrien 115109313Sobrien offsetof(Elf32_Sym, st_name), offsetof(Elf32_Sym, st_value), 116109313Sobrien offsetof(Elf32_Sym, st_size), offsetof(Elf32_Sym, st_info), 117109313Sobrien offsetof(Elf32_Sym, st_shndx), 118109313Sobrien 119109313Sobrien offsetof(Elf32_Rel, r_offset), offsetof(Elf32_Rel, r_info), 120109313Sobrien 121109313Sobrien offsetof(Elf32_Rela, r_offset), offsetof(Elf32_Rela, r_info), 122109313Sobrien offsetof(Elf32_Rela, r_addend) 123109313Sobrien}; 124109313Sobrien 125109313Sobrienint elf64_offsets[] = { 126109313Sobrien 0, 127109313Sobrien 128109313Sobrien offsetof(Elf64_Dyn, d_tag), offsetof(Elf64_Dyn, d_un.d_ptr), 129109313Sobrien offsetof(Elf64_Dyn, d_un.d_val), 130109313Sobrien 131109313Sobrien offsetof(Elf32_Ehdr, e_ident[EI_CLASS]), 132109313Sobrien offsetof(Elf32_Ehdr, e_ident[EI_DATA]), 133109313Sobrien offsetof(Elf32_Ehdr, e_ident[EI_OSABI]), 134109313Sobrien offsetof(Elf64_Ehdr, e_type), offsetof(Elf64_Ehdr, e_machine), 135109313Sobrien offsetof(Elf64_Ehdr, e_version), offsetof(Elf64_Ehdr, e_entry), 136109313Sobrien offsetof(Elf64_Ehdr, e_phoff), offsetof(Elf64_Ehdr, e_shoff), 137109313Sobrien offsetof(Elf64_Ehdr, e_flags), offsetof(Elf64_Ehdr, e_ehsize), 138109313Sobrien offsetof(Elf64_Ehdr, e_phentsize), offsetof(Elf64_Ehdr, e_phnum), 139109313Sobrien offsetof(Elf64_Ehdr, e_shentsize), offsetof(Elf64_Ehdr, e_shnum), 140109313Sobrien offsetof(Elf64_Ehdr, e_shstrndx), 141109313Sobrien 142109313Sobrien offsetof(Elf_Note, n_namesz), offsetof(Elf_Note, n_descsz), 143109313Sobrien offsetof(Elf_Note, n_type), 144109313Sobrien 145109313Sobrien offsetof(Elf64_Phdr, p_type), offsetof(Elf64_Phdr, p_offset), 146109313Sobrien offsetof(Elf64_Phdr, p_vaddr), offsetof(Elf64_Phdr, p_paddr), 147109313Sobrien offsetof(Elf64_Phdr, p_filesz), offsetof(Elf64_Phdr, p_memsz), 148109313Sobrien offsetof(Elf64_Phdr, p_flags), offsetof(Elf64_Phdr, p_align), 149109313Sobrien 150109313Sobrien offsetof(Elf64_Shdr, sh_name), offsetof(Elf64_Shdr, sh_type), 151109313Sobrien offsetof(Elf64_Shdr, sh_flags), offsetof(Elf64_Shdr, sh_addr), 152109313Sobrien offsetof(Elf64_Shdr, sh_offset), offsetof(Elf64_Shdr, sh_size), 153109313Sobrien offsetof(Elf64_Shdr, sh_link), offsetof(Elf64_Shdr, sh_info), 154109313Sobrien offsetof(Elf64_Shdr, sh_addralign), offsetof(Elf64_Shdr, sh_entsize), 155109313Sobrien 156109313Sobrien offsetof(Elf64_Sym, st_name), offsetof(Elf64_Sym, st_value), 157109313Sobrien offsetof(Elf64_Sym, st_size), offsetof(Elf64_Sym, st_info), 158109313Sobrien offsetof(Elf64_Sym, st_shndx), 159109313Sobrien 160109313Sobrien offsetof(Elf64_Rel, r_offset), offsetof(Elf64_Rel, r_info), 161109313Sobrien 162109313Sobrien offsetof(Elf64_Rela, r_offset), offsetof(Elf64_Rela, r_info), 163109313Sobrien offsetof(Elf64_Rela, r_addend) 164109313Sobrien}; 165109313Sobrien 166109332Sobrien/* http://www.sco.com/developers/gabi/latest/ch5.dynamic.html#tag_encodings */ 167109332Sobrienconst char * 168109332Sobriend_tags(u_int64_t tag) { 169109332Sobrien switch (tag) { 170109332Sobrien case 0: return "DT_NULL"; 171109332Sobrien case 1: return "DT_NEEDED"; 172109332Sobrien case 2: return "DT_PLTRELSZ"; 173109332Sobrien case 3: return "DT_PLTGOT"; 174109332Sobrien case 4: return "DT_HASH"; 175109332Sobrien case 5: return "DT_STRTAB"; 176109332Sobrien case 6: return "DT_SYMTAB"; 177109332Sobrien case 7: return "DT_RELA"; 178109332Sobrien case 8: return "DT_RELASZ"; 179109332Sobrien case 9: return "DT_RELAENT"; 180109332Sobrien case 10: return "DT_STRSZ"; 181109332Sobrien case 11: return "DT_SYMENT"; 182109332Sobrien case 12: return "DT_INIT"; 183109332Sobrien case 13: return "DT_FINI"; 184109332Sobrien case 14: return "DT_SONAME"; 185109332Sobrien case 15: return "DT_RPATH"; 186109332Sobrien case 16: return "DT_SYMBOLIC"; 187109332Sobrien case 17: return "DT_REL"; 188109332Sobrien case 18: return "DT_RELSZ"; 189109332Sobrien case 19: return "DT_RELENT"; 190109332Sobrien case 20: return "DT_PLTREL"; 191109332Sobrien case 21: return "DT_DEBUG"; 192109332Sobrien case 22: return "DT_TEXTREL"; 193109332Sobrien case 23: return "DT_JMPREL"; 194109332Sobrien case 24: return "DT_BIND_NOW"; 195109332Sobrien case 25: return "DT_INIT_ARRAY"; 196109332Sobrien case 26: return "DT_FINI_ARRAY"; 197109332Sobrien case 27: return "DT_INIT_ARRAYSZ"; 198109332Sobrien case 28: return "DT_FINI_ARRAYSZ"; 199109332Sobrien case 29: return "DT_RUNPATH"; 200109332Sobrien case 30: return "DT_FLAGS"; 201109332Sobrien case 32: return "DT_PREINIT_ARRAY"; /* XXX: DT_ENCODING */ 202109332Sobrien case 33: return "DT_PREINIT_ARRAYSZ"; 203109332Sobrien /* 0x6000000D - 0x6ffff000 operating system-specific semantics */ 204109332Sobrien case 0x6ffffdf5: return "DT_GNU_PRELINKED"; 205109332Sobrien case 0x6ffffdf6: return "DT_GNU_CONFLICTSZ"; 206109332Sobrien case 0x6ffffdf7: return "DT_GNU_LIBLISTSZ"; 207109332Sobrien case 0x6ffffdf8: return "DT_SUNW_CHECKSUM"; 208109332Sobrien case 0x6ffffdf9: return "DT_PLTPADSZ"; 209109332Sobrien case 0x6ffffdfa: return "DT_MOVEENT"; 210109332Sobrien case 0x6ffffdfb: return "DT_MOVESZ"; 211109332Sobrien case 0x6ffffdfc: return "DT_FEATURE"; 212109332Sobrien case 0x6ffffdfd: return "DT_POSFLAG_1"; 213109332Sobrien case 0x6ffffdfe: return "DT_SYMINSZ"; 214109332Sobrien case 0x6ffffdff: return "DT_SYMINENT (DT_VALRNGHI)"; 215109332Sobrien case 0x6ffffe00: return "DT_ADDRRNGLO"; 216109332Sobrien case 0x6ffffef8: return "DT_GNU_CONFLICT"; 217109332Sobrien case 0x6ffffef9: return "DT_GNU_LIBLIST"; 218109332Sobrien case 0x6ffffefa: return "DT_SUNW_CONFIG"; 219109332Sobrien case 0x6ffffefb: return "DT_SUNW_DEPAUDIT"; 220109332Sobrien case 0x6ffffefc: return "DT_SUNW_AUDIT"; 221109332Sobrien case 0x6ffffefd: return "DT_SUNW_PLTPAD"; 222109332Sobrien case 0x6ffffefe: return "DT_SUNW_MOVETAB"; 223109332Sobrien case 0x6ffffeff: return "DT_SYMINFO (DT_ADDRRNGHI)"; 224109332Sobrien case 0x6ffffff9: return "DT_RELACOUNT"; 225109332Sobrien case 0x6ffffffa: return "DT_RELCOUNT"; 226109332Sobrien case 0x6ffffffb: return "DT_FLAGS_1"; 227109332Sobrien case 0x6ffffffc: return "DT_VERDEF"; 228109332Sobrien case 0x6ffffffd: return "DT_VERDEFNUM"; 229109332Sobrien case 0x6ffffffe: return "DT_VERNEED"; 230109332Sobrien case 0x6fffffff: return "DT_VERNEEDNUM"; 231109332Sobrien case 0x6ffffff0: return "DT_GNU_VERSYM"; 232109332Sobrien /* 0x70000000 - 0x7fffffff processor-specific semantics */ 233109457Smarcel case 0x70000000: return "DT_IA64_PLT_RESERVE"; 234109332Sobrien case 0x7ffffffd: return "DT_SUNW_AUXILIARY"; 235109332Sobrien case 0x7ffffffe: return "DT_SUNW_USED"; 236109332Sobrien case 0x7fffffff: return "DT_SUNW_FILTER"; 237109332Sobrien default: return "ERROR: TAG NOT DEFINED"; 238109332Sobrien } 239109313Sobrien}; 240109313Sobrien 241109457Smarcelconst char * 242109457Smarcele_machines(u_int mach) 243109457Smarcel{ 244109457Smarcel switch (mach) { 245109457Smarcel case EM_NONE: return "EM_NONE"; 246109457Smarcel case EM_M32: return "EM_M32"; 247109457Smarcel case EM_SPARC: return "EM_SPARC"; 248109457Smarcel case EM_386: return "EM_386"; 249109457Smarcel case EM_68K: return "EM_68K"; 250109457Smarcel case EM_88K: return "EM_88K"; 251109457Smarcel case EM_486: return "EM_486"; 252109457Smarcel case EM_860: return "EM_860"; 253109457Smarcel case EM_MIPS: return "EM_MIPS"; 254109457Smarcel case EM_IA_64: return "EM_IA_64"; 255109457Smarcel } 256109457Smarcel return "(unknown machine)"; 257109313Sobrien}; 258109313Sobrien 259109313Sobrienchar *e_types[] = { 260109313Sobrien "ET_NONE", "ET_REL", "ET_EXEC", "ET_DYN", "ET_CORE" 261109313Sobrien}; 262109313Sobrien 263109313Sobrienchar *ei_versions[] = { 264109313Sobrien "EV_NONE", "EV_CURRENT" 265109313Sobrien}; 266109313Sobrien 267109313Sobrienchar *ei_classes[] = { 268109313Sobrien "ELFCLASSNONE", "ELFCLASS32", "ELFCLASS64" 269109313Sobrien}; 270109313Sobrien 271109313Sobrienchar *ei_data[] = { 272109313Sobrien "ELFDATANONE", "ELFDATA2LSB", "ELFDATA2MSB" 273109313Sobrien}; 274109313Sobrien 275109313Sobrienchar *ei_abis[] = { 276109313Sobrien "ELFOSABI_SYSV", "ELFOSABI_HPUX", "ELFOSABI_NETBSD", "ELFOSABI_LINUX", 277109313Sobrien "ELFOSABI_HURD", "ELFOSABI_86OPEN", "ELFOSABI_SOLARIS", 278109313Sobrien "ELFOSABI_MONTEREY", "ELFOSABI_IRIX", "ELFOSABI_FREEBSD", 279109313Sobrien "ELFOSABI_TRU64", "ELFOSABI_MODESTO", "ELFOSABI_OPENBSD" 280109313Sobrien}; 281109313Sobrien 282109313Sobrienchar *p_types[] = { 283109313Sobrien "PT_NULL", "PT_LOAD", "PT_DYNAMIC", "PT_INTERP", "PT_NOTE", 284109313Sobrien "PT_SHLIB", "PT_PHDR" 285109313Sobrien}; 286109313Sobrien 287109313Sobrienchar *p_flags[] = { 288109313Sobrien "", "PF_X", "PF_W", "PF_X|PF_W", "PF_R", "PF_X|PF_R", "PF_W|PF_R", 289109313Sobrien "PF_X|PF_W|PF_R" 290109313Sobrien}; 291109313Sobrien 292109329Sobrien/* http://www.sco.com/developers/gabi/latest/ch4.sheader.html#sh_type */ 293109332Sobrienconst char * 294109332Sobriensh_types(u_int64_t sht) { 295109329Sobrien switch (sht) { 296109329Sobrien case 0: return "SHT_NULL"; 297109329Sobrien case 1: return "SHT_PROGBITS"; 298109329Sobrien case 2: return "SHT_SYMTAB"; 299109329Sobrien case 3: return "SHT_STRTAB"; 300109329Sobrien case 4: return "SHT_RELA"; 301109329Sobrien case 5: return "SHT_HASH"; 302109329Sobrien case 6: return "SHT_DYNAMIC"; 303109329Sobrien case 7: return "SHT_NOTE"; 304109329Sobrien case 8: return "SHT_NOBITS"; 305109329Sobrien case 9: return "SHT_REL"; 306109329Sobrien case 10: return "SHT_SHLIB"; 307109329Sobrien case 11: return "SHT_DYNSYM"; 308109329Sobrien case 14: return "SHT_INIT_ARRAY"; 309109329Sobrien case 15: return "SHT_FINI_ARRAY"; 310109329Sobrien case 16: return "SHT_PREINIT_ARRAY"; 311109329Sobrien case 17: return "SHT_GROUP"; 312109329Sobrien case 18: return "SHT_SYMTAB_SHNDX"; 313109332Sobrien /* 0x60000000 - 0x6fffffff operating system-specific semantics */ 314109329Sobrien case 0x6ffffff0: return "XXX:VERSYM"; 315109329Sobrien case 0x6ffffff7: return "SHT_GNU_LIBLIST"; 316109329Sobrien case 0x6ffffffc: return "XXX:VERDEF"; 317109329Sobrien case 0x6ffffffd: return "SHT_SUNW(GNU)_verdef"; 318109329Sobrien case 0x6ffffffe: return "SHT_SUNW(GNU)_verneed"; 319109329Sobrien case 0x6fffffff: return "SHT_SUNW(GNU)_versym"; 320109332Sobrien /* 0x70000000 - 0x7fffffff processor-specific semantics */ 321109457Smarcel case 0x70000000: return "SHT_IA_64_EXT"; 322109457Smarcel case 0x70000001: return "SHT_IA_64_UNWIND"; 323109329Sobrien case 0x7ffffffd: return "XXX:AUXILIARY"; 324109329Sobrien case 0x7fffffff: return "XXX:FILTER"; 325109332Sobrien /* 0x80000000 - 0xffffffff application programs */ 326109329Sobrien default: return "ERROR: SHT NOT DEFINED"; 327109329Sobrien } 328109313Sobrien}; 329109313Sobrien 330109313Sobrienchar *sh_flags[] = { 331109313Sobrien "", "SHF_WRITE", "SHF_ALLOC", "SHF_WRITE|SHF_ALLOC", "SHF_EXECINSTR", 332109313Sobrien "SHF_WRITE|SHF_EXECINSTR", "SHF_ALLOC|SHF_EXECINSTR", 333109313Sobrien "SHF_WRITE|SHF_ALLOC|SHF_EXECINSTR" 334109313Sobrien}; 335109313Sobrien 336109313Sobrienchar *st_types[] = { 337109313Sobrien "STT_NOTYPE", "STT_OBJECT", "STT_FUNC", "STT_SECTION", "STT_FILE" 338109313Sobrien}; 339109313Sobrien 340109313Sobrienchar *st_bindings[] = { 341109313Sobrien "STB_LOCAL", "STB_GLOBAL", "STB_WEAK" 342109313Sobrien}; 343109313Sobrien 344109313Sobrienchar *dynstr; 345109313Sobrienchar *shstrtab; 346109313Sobrienchar *strtab; 347109313SobrienFILE *out; 348109313Sobrien 349109313Sobrienu_int64_t elf_get_byte(Elf32_Ehdr *e, void *base, elf_member_t member); 350109313Sobrienu_int64_t elf_get_quarter(Elf32_Ehdr *e, void *base, elf_member_t member); 351109313Sobrienu_int64_t elf_get_half(Elf32_Ehdr *e, void *base, elf_member_t member); 352109313Sobrienu_int64_t elf_get_word(Elf32_Ehdr *e, void *base, elf_member_t member); 353109313Sobrienu_int64_t elf_get_quad(Elf32_Ehdr *e, void *base, elf_member_t member); 354109313Sobrien 355110252Sobrienvoid elf_print_ehdr(Elf32_Ehdr *e); 356110252Sobrienvoid elf_print_phdr(Elf32_Ehdr *e, void *p); 357110252Sobrienvoid elf_print_shdr(Elf32_Ehdr *e, void *sh); 358110252Sobrienvoid elf_print_symtab(Elf32_Ehdr *e, void *sh, char *str); 359110252Sobrienvoid elf_print_dynamic(Elf32_Ehdr *e, void *sh); 360110252Sobrienvoid elf_print_rel(Elf32_Ehdr *e, void *r); 361110252Sobrienvoid elf_print_rela(Elf32_Ehdr *e, void *ra); 362110252Sobrienvoid elf_print_interp(Elf32_Ehdr *e, void *p); 363110252Sobrienvoid elf_print_got(Elf32_Ehdr *e, void *sh); 364110252Sobrienvoid elf_print_hash(Elf32_Ehdr *e, void *sh); 365110252Sobrienvoid elf_print_note(Elf32_Ehdr *e, void *sh); 366109313Sobrien 367109313Sobrienvoid usage(void); 368109313Sobrien 369109313Sobrienint 370109313Sobrienmain(int ac, char **av) 371109313Sobrien{ 372109313Sobrien u_int64_t phoff; 373109313Sobrien u_int64_t shoff; 374109313Sobrien u_int64_t phentsize; 375109313Sobrien u_int64_t phnum; 376109313Sobrien u_int64_t shentsize; 377109313Sobrien u_int64_t shnum; 378109313Sobrien u_int64_t shstrndx; 379109313Sobrien u_int64_t offset; 380109313Sobrien u_int64_t name; 381109313Sobrien u_int64_t type; 382109313Sobrien struct stat sb; 383109313Sobrien u_int flags; 384110252Sobrien Elf32_Ehdr *e; 385109313Sobrien void *p; 386109313Sobrien void *sh; 387109313Sobrien void *v; 388109313Sobrien int fd; 389109313Sobrien int ch; 390109313Sobrien int i; 391109313Sobrien 392109313Sobrien out = stdout; 393109313Sobrien flags = 0; 394109313Sobrien while ((ch = getopt(ac, av, "acdeiGhnprsw:")) != -1) 395109313Sobrien switch (ch) { 396109313Sobrien case 'a': 397109313Sobrien flags = ED_ALL; 398109313Sobrien break; 399109313Sobrien case 'c': 400109313Sobrien flags |= ED_SHDR; 401109313Sobrien break; 402109313Sobrien case 'd': 403109313Sobrien flags |= ED_DYN; 404109313Sobrien break; 405109313Sobrien case 'e': 406109313Sobrien flags |= ED_EHDR; 407109313Sobrien break; 408109313Sobrien case 'i': 409109313Sobrien flags |= ED_INTERP; 410109313Sobrien break; 411109313Sobrien case 'G': 412109313Sobrien flags |= ED_GOT; 413109313Sobrien break; 414109313Sobrien case 'h': 415109313Sobrien flags |= ED_HASH; 416109313Sobrien break; 417109313Sobrien case 'n': 418109313Sobrien flags |= ED_NOTE; 419109313Sobrien break; 420109313Sobrien case 'p': 421109313Sobrien flags |= ED_PHDR; 422109313Sobrien break; 423109313Sobrien case 'r': 424109313Sobrien flags |= ED_REL; 425109313Sobrien break; 426109313Sobrien case 's': 427109313Sobrien flags |= ED_SYMTAB; 428109313Sobrien break; 429109313Sobrien case 'w': 430109313Sobrien if ((out = fopen(optarg, "w")) == NULL) 431109313Sobrien err(1, "%s", optarg); 432109313Sobrien break; 433109313Sobrien case '?': 434109313Sobrien default: 435109313Sobrien usage(); 436109313Sobrien } 437109313Sobrien ac -= optind; 438109313Sobrien av += optind; 439109313Sobrien if (ac == 0 || flags == 0) 440109313Sobrien usage(); 441109313Sobrien if ((fd = open(*av, O_RDONLY)) < 0 || 442109313Sobrien fstat(fd, &sb) < 0) 443109313Sobrien err(1, NULL); 444109313Sobrien e = mmap(NULL, sb.st_size, PROT_READ, MAP_SHARED, fd, 0); 445109313Sobrien if (e == MAP_FAILED) 446109313Sobrien err(1, NULL); 447109313Sobrien if (!IS_ELF(*(Elf32_Ehdr *)e)) 448109313Sobrien errx(1, "not an elf file"); 449109313Sobrien phoff = elf_get_off(e, e, E_PHOFF); 450109313Sobrien shoff = elf_get_off(e, e, E_SHOFF); 451109313Sobrien phentsize = elf_get_quarter(e, e, E_PHENTSIZE); 452109313Sobrien phnum = elf_get_quarter(e, e, E_PHNUM); 453109313Sobrien shentsize = elf_get_quarter(e, e, E_SHENTSIZE); 454109313Sobrien shnum = elf_get_quarter(e, e, E_SHNUM); 455109313Sobrien shstrndx = elf_get_quarter(e, e, E_SHSTRNDX); 456110252Sobrien p = (void *)e + phoff; 457110252Sobrien sh = (void *)e + shoff; 458109313Sobrien offset = elf_get_off(e, sh + shstrndx * shentsize, SH_OFFSET); 459110252Sobrien shstrtab = (char *)e + offset; 460109313Sobrien for (i = 0; i < shnum; i++) { 461109313Sobrien name = elf_get_word(e, sh + i * shentsize, SH_NAME); 462109313Sobrien offset = elf_get_off(e, sh + i * shentsize, SH_OFFSET); 463109313Sobrien if (strcmp(shstrtab + name, ".strtab") == 0) 464110252Sobrien strtab = (char *)e + offset; 465109313Sobrien if (strcmp(shstrtab + name, ".dynstr") == 0) 466110252Sobrien dynstr = (char *)e + offset; 467109313Sobrien } 468109313Sobrien if (flags & ED_EHDR) 469109313Sobrien elf_print_ehdr(e); 470109313Sobrien if (flags & ED_PHDR) 471109313Sobrien elf_print_phdr(e, p); 472109313Sobrien if (flags & ED_SHDR) 473109313Sobrien elf_print_shdr(e, sh); 474109313Sobrien for (i = 0; i < phnum; i++) { 475109313Sobrien v = p + i * phentsize; 476109313Sobrien type = elf_get_word(e, v, P_TYPE); 477109313Sobrien switch (type) { 478109313Sobrien case PT_INTERP: 479109313Sobrien if (flags & ED_INTERP) 480109313Sobrien elf_print_interp(e, v); 481109313Sobrien break; 482109313Sobrien case PT_NULL: 483109313Sobrien case PT_LOAD: 484109313Sobrien case PT_DYNAMIC: 485109313Sobrien case PT_NOTE: 486109313Sobrien case PT_SHLIB: 487109313Sobrien case PT_PHDR: 488109313Sobrien break; 489109313Sobrien } 490109313Sobrien } 491109313Sobrien for (i = 0; i < shnum; i++) { 492109313Sobrien v = sh + i * shentsize; 493109313Sobrien type = elf_get_word(e, v, SH_TYPE); 494109313Sobrien switch (type) { 495109313Sobrien case SHT_SYMTAB: 496109313Sobrien if (flags & ED_SYMTAB) 497109313Sobrien elf_print_symtab(e, v, strtab); 498109313Sobrien break; 499109313Sobrien case SHT_DYNAMIC: 500109313Sobrien if (flags & ED_DYN) 501109313Sobrien elf_print_dynamic(e, v); 502109313Sobrien break; 503109313Sobrien case SHT_RELA: 504109313Sobrien if (flags & ED_REL) 505109313Sobrien elf_print_rela(e, v); 506109313Sobrien break; 507109313Sobrien case SHT_REL: 508109313Sobrien if (flags & ED_REL) 509109313Sobrien elf_print_rel(e, v); 510109313Sobrien break; 511109313Sobrien case SHT_NOTE: 512109313Sobrien name = elf_get_word(e, v, SH_NAME); 513109313Sobrien if (flags & ED_NOTE && 514109313Sobrien strcmp(shstrtab + name, ".note.ABI-tag") == 0) 515109313Sobrien elf_print_note(e, v); 516109313Sobrien break; 517109313Sobrien case SHT_DYNSYM: 518109313Sobrien if (flags & ED_SYMTAB) 519109313Sobrien elf_print_symtab(e, v, dynstr); 520109313Sobrien break; 521109313Sobrien case SHT_PROGBITS: 522109313Sobrien name = elf_get_word(e, v, SH_NAME); 523109313Sobrien if (flags & ED_GOT && 524109313Sobrien strcmp(shstrtab + name, ".got") == 0) 525109313Sobrien elf_print_got(e, v); 526109313Sobrien break; 527109313Sobrien case SHT_HASH: 528109313Sobrien if (flags & ED_HASH) 529109313Sobrien elf_print_hash(e, v); 530109313Sobrien break; 531109313Sobrien case SHT_NULL: 532109313Sobrien case SHT_STRTAB: 533109313Sobrien case SHT_NOBITS: 534109313Sobrien case SHT_SHLIB: 535109313Sobrien break; 536109313Sobrien } 537109313Sobrien } 538109313Sobrien 539109313Sobrien return 0; 540109313Sobrien} 541109313Sobrien 542109313Sobrienvoid 543110252Sobrienelf_print_ehdr(Elf32_Ehdr *e) 544109313Sobrien{ 545109313Sobrien u_int64_t class; 546109313Sobrien u_int64_t data; 547109313Sobrien u_int64_t osabi; 548109313Sobrien u_int64_t type; 549109313Sobrien u_int64_t machine; 550109313Sobrien u_int64_t version; 551109313Sobrien u_int64_t entry; 552109313Sobrien u_int64_t phoff; 553109313Sobrien u_int64_t shoff; 554109313Sobrien u_int64_t flags; 555109313Sobrien u_int64_t ehsize; 556109313Sobrien u_int64_t phentsize; 557109313Sobrien u_int64_t phnum; 558109313Sobrien u_int64_t shentsize; 559109313Sobrien u_int64_t shnum; 560109313Sobrien u_int64_t shstrndx; 561109313Sobrien 562109313Sobrien class = elf_get_byte(e, e, E_CLASS); 563109313Sobrien data = elf_get_byte(e, e, E_DATA); 564109313Sobrien osabi = elf_get_byte(e, e, E_OSABI); 565109313Sobrien type = elf_get_quarter(e, e, E_TYPE); 566109313Sobrien machine = elf_get_quarter(e, e, E_MACHINE); 567109313Sobrien version = elf_get_word(e, e, E_VERSION); 568109313Sobrien entry = elf_get_addr(e, e, E_ENTRY); 569109313Sobrien phoff = elf_get_off(e, e, E_PHOFF); 570109313Sobrien shoff = elf_get_off(e, e, E_SHOFF); 571109313Sobrien flags = elf_get_word(e, e, E_FLAGS); 572109313Sobrien ehsize = elf_get_quarter(e, e, E_EHSIZE); 573109313Sobrien phentsize = elf_get_quarter(e, e, E_PHENTSIZE); 574109313Sobrien phnum = elf_get_quarter(e, e, E_PHNUM); 575109313Sobrien shentsize = elf_get_quarter(e, e, E_SHENTSIZE); 576109313Sobrien shnum = elf_get_quarter(e, e, E_SHNUM); 577109313Sobrien shstrndx = elf_get_quarter(e, e, E_SHSTRNDX); 578109313Sobrien fprintf(out, "\nelf header:\n"); 579109313Sobrien fprintf(out, "\n"); 580109313Sobrien fprintf(out, "\te_ident: %s %s %s\n", ei_classes[class], ei_data[data], 581109313Sobrien ei_abis[osabi]); 582109313Sobrien fprintf(out, "\te_type: %s\n", e_types[type]); 583109457Smarcel fprintf(out, "\te_machine: %s\n", e_machines(machine)); 584109313Sobrien fprintf(out, "\te_version: %s\n", ei_versions[version]); 585109313Sobrien fprintf(out, "\te_entry: %#llx\n", entry); 586109313Sobrien fprintf(out, "\te_phoff: %lld\n", phoff); 587109313Sobrien fprintf(out, "\te_shoff: %lld\n", shoff); 588109313Sobrien fprintf(out, "\te_flags: %lld\n", flags); 589109313Sobrien fprintf(out, "\te_ehsize: %lld\n", ehsize); 590109313Sobrien fprintf(out, "\te_phentsize: %lld\n", phentsize); 591109313Sobrien fprintf(out, "\te_phnum: %lld\n", phnum); 592109313Sobrien fprintf(out, "\te_shentsize: %lld\n", shentsize); 593109313Sobrien fprintf(out, "\te_shnum: %lld\n", shnum); 594109313Sobrien fprintf(out, "\te_shstrndx: %lld\n", shstrndx); 595109313Sobrien} 596109313Sobrien 597109313Sobrienvoid 598110252Sobrienelf_print_phdr(Elf32_Ehdr *e, void *p) 599109313Sobrien{ 600109313Sobrien u_int64_t phentsize; 601109313Sobrien u_int64_t phnum; 602109313Sobrien u_int64_t type; 603109313Sobrien u_int64_t offset; 604109313Sobrien u_int64_t vaddr; 605109313Sobrien u_int64_t paddr; 606109313Sobrien u_int64_t filesz; 607109313Sobrien u_int64_t memsz; 608109313Sobrien u_int64_t flags; 609109313Sobrien u_int64_t align; 610109313Sobrien void *v; 611109313Sobrien int i; 612109313Sobrien 613109313Sobrien phentsize = elf_get_quarter(e, e, E_PHENTSIZE); 614109313Sobrien phnum = elf_get_quarter(e, e, E_PHNUM); 615109313Sobrien fprintf(out, "\nprogram header:\n"); 616109313Sobrien for (i = 0; i < phnum; i++) { 617109313Sobrien v = p + i * phentsize; 618109313Sobrien type = elf_get_word(e, v, P_TYPE); 619109313Sobrien offset = elf_get_off(e, v, P_OFFSET); 620109313Sobrien vaddr = elf_get_addr(e, v, P_VADDR); 621109313Sobrien paddr = elf_get_addr(e, v, P_PADDR); 622109313Sobrien filesz = elf_get_size(e, v, P_FILESZ); 623109313Sobrien memsz = elf_get_size(e, v, P_MEMSZ); 624109313Sobrien flags = elf_get_word(e, v, P_FLAGS); 625109313Sobrien align = elf_get_size(e, v, P_ALIGN); 626109313Sobrien fprintf(out, "\n"); 627109313Sobrien fprintf(out, "entry: %d\n", i); 628109313Sobrien fprintf(out, "\tp_type: %s\n", p_types[type & 0x7]); 629109313Sobrien fprintf(out, "\tp_offset: %lld\n", offset); 630109313Sobrien fprintf(out, "\tp_vaddr: %#llx\n", vaddr); 631109313Sobrien fprintf(out, "\tp_paddr: %#llx\n", paddr); 632109313Sobrien fprintf(out, "\tp_filesz: %lld\n", filesz); 633109313Sobrien fprintf(out, "\tp_memsz: %lld\n", memsz); 634109313Sobrien fprintf(out, "\tp_flags: %s\n", p_flags[flags]); 635109313Sobrien fprintf(out, "\tp_align: %lld\n", align); 636109313Sobrien } 637109313Sobrien} 638109313Sobrien 639109313Sobrienvoid 640110252Sobrienelf_print_shdr(Elf32_Ehdr *e, void *sh) 641109313Sobrien{ 642109313Sobrien u_int64_t shentsize; 643109313Sobrien u_int64_t shnum; 644109313Sobrien u_int64_t name; 645109313Sobrien u_int64_t type; 646109313Sobrien u_int64_t flags; 647109313Sobrien u_int64_t addr; 648109313Sobrien u_int64_t offset; 649109313Sobrien u_int64_t size; 650109313Sobrien u_int64_t link; 651109313Sobrien u_int64_t info; 652109313Sobrien u_int64_t addralign; 653109313Sobrien u_int64_t entsize; 654109313Sobrien void *v; 655109313Sobrien int i; 656109313Sobrien 657109313Sobrien shentsize = elf_get_quarter(e, e, E_SHENTSIZE); 658109313Sobrien shnum = elf_get_quarter(e, e, E_SHNUM); 659109313Sobrien fprintf(out, "\nsection header:\n"); 660109313Sobrien for (i = 0; i < shnum; i++) { 661109313Sobrien v = sh + i * shentsize; 662109313Sobrien name = elf_get_word(e, v, SH_NAME); 663109313Sobrien type = elf_get_word(e, v, SH_TYPE); 664109313Sobrien flags = elf_get_word(e, v, SH_FLAGS); 665109313Sobrien addr = elf_get_addr(e, v, SH_ADDR); 666109313Sobrien offset = elf_get_off(e, v, SH_OFFSET); 667109313Sobrien size = elf_get_size(e, v, SH_SIZE); 668109313Sobrien link = elf_get_word(e, v, SH_LINK); 669109313Sobrien info = elf_get_word(e, v, SH_INFO); 670109313Sobrien addralign = elf_get_size(e, v, SH_ADDRALIGN); 671109313Sobrien entsize = elf_get_size(e, v, SH_ENTSIZE); 672109313Sobrien fprintf(out, "\n"); 673109313Sobrien fprintf(out, "entry: %d\n", i); 674109313Sobrien fprintf(out, "\tsh_name: %s\n", shstrtab + name); 675109329Sobrien fprintf(out, "\tsh_type: %s\n", sh_types(type)); 676109313Sobrien fprintf(out, "\tsh_flags: %s\n", sh_flags[flags & 0x7]); 677109313Sobrien fprintf(out, "\tsh_addr: %#llx\n", addr); 678109313Sobrien fprintf(out, "\tsh_offset: %lld\n", offset); 679109313Sobrien fprintf(out, "\tsh_size: %lld\n", size); 680109313Sobrien fprintf(out, "\tsh_link: %lld\n", link); 681109313Sobrien fprintf(out, "\tsh_info: %lld\n", info); 682109313Sobrien fprintf(out, "\tsh_addralign: %lld\n", addralign); 683109313Sobrien fprintf(out, "\tsh_entsize: %lld\n", entsize); 684109313Sobrien } 685109313Sobrien} 686109313Sobrien 687109313Sobrienvoid 688110252Sobrienelf_print_symtab(Elf32_Ehdr *e, void *sh, char *str) 689109313Sobrien{ 690109313Sobrien u_int64_t offset; 691109313Sobrien u_int64_t entsize; 692109313Sobrien u_int64_t size; 693109313Sobrien u_int64_t name; 694109313Sobrien u_int64_t value; 695109313Sobrien u_int64_t info; 696109313Sobrien u_int64_t shndx; 697109313Sobrien void *st; 698109313Sobrien int len; 699109313Sobrien int i; 700109313Sobrien 701109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 702109313Sobrien entsize = elf_get_size(e, sh, SH_ENTSIZE); 703109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 704109313Sobrien name = elf_get_word(e, sh, SH_NAME); 705109313Sobrien len = size / entsize; 706109313Sobrien fprintf(out, "\nsymbol table (%s):\n", shstrtab + name); 707109313Sobrien for (i = 0; i < len; i++) { 708110252Sobrien st = (void *)e + offset + i * entsize; 709109313Sobrien name = elf_get_word(e, st, ST_NAME); 710109313Sobrien value = elf_get_addr(e, st, ST_VALUE); 711109313Sobrien size = elf_get_size(e, st, ST_SIZE); 712109313Sobrien info = elf_get_byte(e, st, ST_INFO); 713109313Sobrien shndx = elf_get_quarter(e, st, ST_SHNDX); 714109313Sobrien fprintf(out, "\n"); 715109313Sobrien fprintf(out, "entry: %d\n", i); 716109313Sobrien fprintf(out, "\tst_name: %s\n", str + name); 717109313Sobrien fprintf(out, "\tst_value: %#llx\n", value); 718109313Sobrien fprintf(out, "\tst_size: %lld\n", size); 719109313Sobrien fprintf(out, "\tst_info: %s %s\n", 720109313Sobrien st_types[ELF32_ST_TYPE(info)], 721109313Sobrien st_bindings[ELF32_ST_BIND(info)]); 722109313Sobrien fprintf(out, "\tst_shndx: %lld\n", shndx); 723109313Sobrien } 724109313Sobrien} 725109313Sobrien 726109313Sobrienvoid 727110252Sobrienelf_print_dynamic(Elf32_Ehdr *e, void *sh) 728109313Sobrien{ 729109313Sobrien u_int64_t offset; 730109313Sobrien u_int64_t entsize; 731109313Sobrien u_int64_t size; 732109313Sobrien int64_t tag; 733109313Sobrien u_int64_t ptr; 734109313Sobrien u_int64_t val; 735109313Sobrien void *d; 736109313Sobrien int i; 737109313Sobrien 738109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 739109313Sobrien entsize = elf_get_size(e, sh, SH_ENTSIZE); 740109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 741109313Sobrien fprintf(out, "\ndynamic:\n"); 742109313Sobrien for (i = 0; i < size / entsize; i++) { 743110252Sobrien d = (void *)e + offset + i * entsize; 744109313Sobrien tag = elf_get_size(e, d, D_TAG); 745109313Sobrien ptr = elf_get_size(e, d, D_PTR); 746109313Sobrien val = elf_get_addr(e, d, D_VAL); 747109313Sobrien fprintf(out, "\n"); 748109313Sobrien fprintf(out, "entry: %d\n", i); 749109332Sobrien fprintf(out, "\td_tag: %s\n", d_tags(tag)); 750109313Sobrien switch (tag) { 751109313Sobrien case DT_NEEDED: 752109313Sobrien case DT_SONAME: 753109313Sobrien case DT_RPATH: 754109313Sobrien fprintf(out, "\td_val: %s\n", dynstr + val); 755109313Sobrien break; 756109313Sobrien case DT_PLTRELSZ: 757109313Sobrien case DT_RELA: 758109313Sobrien case DT_RELASZ: 759109313Sobrien case DT_RELAENT: 760109313Sobrien case DT_STRSZ: 761109313Sobrien case DT_SYMENT: 762109313Sobrien case DT_RELSZ: 763109313Sobrien case DT_RELENT: 764109313Sobrien case DT_PLTREL: 765109313Sobrien fprintf(out, "\td_val: %lld\n", val); 766109313Sobrien break; 767109313Sobrien case DT_PLTGOT: 768109313Sobrien case DT_HASH: 769109313Sobrien case DT_STRTAB: 770109313Sobrien case DT_SYMTAB: 771109313Sobrien case DT_INIT: 772109313Sobrien case DT_FINI: 773109313Sobrien case DT_REL: 774109313Sobrien case DT_JMPREL: 775109313Sobrien fprintf(out, "\td_ptr: %#llx\n", ptr); 776109313Sobrien break; 777109313Sobrien case DT_NULL: 778109313Sobrien case DT_SYMBOLIC: 779109313Sobrien case DT_DEBUG: 780109313Sobrien case DT_TEXTREL: 781109313Sobrien break; 782109313Sobrien } 783109313Sobrien } 784109313Sobrien} 785109313Sobrien 786109313Sobrienvoid 787110252Sobrienelf_print_rela(Elf32_Ehdr *e, void *sh) 788109313Sobrien{ 789109313Sobrien u_int64_t offset; 790109313Sobrien u_int64_t entsize; 791109313Sobrien u_int64_t size; 792109313Sobrien u_int64_t name; 793109313Sobrien u_int64_t info; 794109313Sobrien int64_t addend; 795109313Sobrien void *ra; 796109313Sobrien void *v; 797109313Sobrien int i; 798109313Sobrien 799109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 800109313Sobrien entsize = elf_get_size(e, sh, SH_ENTSIZE); 801109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 802109313Sobrien name = elf_get_word(e, sh, SH_NAME); 803110252Sobrien v = (void *)e + offset; 804109313Sobrien fprintf(out, "\nrelocation with addend (%s):\n", shstrtab + name); 805109313Sobrien for (i = 0; i < size / entsize; i++) { 806109313Sobrien ra = v + i * entsize; 807109313Sobrien offset = elf_get_addr(e, ra, RA_OFFSET); 808109313Sobrien info = elf_get_word(e, ra, RA_INFO); 809109313Sobrien addend = elf_get_off(e, ra, RA_ADDEND); 810109313Sobrien fprintf(out, "\n"); 811109313Sobrien fprintf(out, "entry: %d\n", i); 812109313Sobrien fprintf(out, "\tr_offset: %#llx\n", offset); 813109313Sobrien fprintf(out, "\tr_info: %lld\n", info); 814109313Sobrien fprintf(out, "\tr_addend: %lld\n", addend); 815109313Sobrien } 816109313Sobrien} 817109313Sobrien 818109313Sobrienvoid 819110252Sobrienelf_print_rel(Elf32_Ehdr *e, void *sh) 820109313Sobrien{ 821109313Sobrien u_int64_t offset; 822109313Sobrien u_int64_t entsize; 823109313Sobrien u_int64_t size; 824109313Sobrien u_int64_t name; 825109313Sobrien u_int64_t info; 826109313Sobrien void *r; 827109313Sobrien void *v; 828109313Sobrien int i; 829109313Sobrien 830109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 831109313Sobrien entsize = elf_get_size(e, sh, SH_ENTSIZE); 832109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 833109313Sobrien name = elf_get_word(e, sh, SH_NAME); 834109313Sobrien v = e + offset; 835109313Sobrien fprintf(out, "\nrelocation (%s):\n", shstrtab + name); 836109313Sobrien for (i = 0; i < size / entsize; i++) { 837109313Sobrien r = v + i * entsize; 838109313Sobrien offset = elf_get_addr(e, r, R_OFFSET); 839109313Sobrien info = elf_get_word(e, r, R_INFO); 840109313Sobrien fprintf(out, "\n"); 841109313Sobrien fprintf(out, "entry: %d\n", i); 842109313Sobrien fprintf(out, "\tr_offset: %#llx\n", offset); 843109313Sobrien fprintf(out, "\tr_info: %lld\n", info); 844109313Sobrien } 845109313Sobrien} 846109313Sobrien 847109313Sobrienvoid 848110252Sobrienelf_print_interp(Elf32_Ehdr *e, void *p) 849109313Sobrien{ 850109313Sobrien u_int64_t offset; 851109313Sobrien char *s; 852109313Sobrien 853109313Sobrien offset = elf_get_off(e, p, P_OFFSET); 854110252Sobrien s = (char *)e + offset; 855109313Sobrien fprintf(out, "\ninterp:\n"); 856109313Sobrien fprintf(out, "\t%s\n", s); 857109313Sobrien} 858109313Sobrien 859109313Sobrienvoid 860110252Sobrienelf_print_got(Elf32_Ehdr *e, void *sh) 861109313Sobrien{ 862109313Sobrien u_int64_t offset; 863109313Sobrien u_int64_t addralign; 864109313Sobrien u_int64_t size; 865109313Sobrien u_int64_t addr; 866109313Sobrien void *v; 867109313Sobrien int i; 868109313Sobrien 869109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 870109313Sobrien addralign = elf_get_size(e, sh, SH_ADDRALIGN); 871109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 872110252Sobrien v = (void *)e + offset; 873109313Sobrien fprintf(out, "\nglobal offset table:\n"); 874109313Sobrien for (i = 0; i < size / addralign; i++) { 875109313Sobrien addr = elf_get_addr(e, v + i * addralign, 0); 876109313Sobrien fprintf(out, "\n"); 877109313Sobrien fprintf(out, "entry: %d\n", i); 878109313Sobrien fprintf(out, "\t%#llx\n", addr); 879109313Sobrien } 880109313Sobrien} 881109313Sobrien 882109313Sobrienvoid 883110252Sobrienelf_print_hash(Elf32_Ehdr *e, void *sh) 884109313Sobrien{ 885109313Sobrien} 886109313Sobrien 887109313Sobrienvoid 888110252Sobrienelf_print_note(Elf32_Ehdr *e, void *sh) 889109313Sobrien{ 890109313Sobrien u_int64_t offset; 891109313Sobrien u_int64_t size; 892109313Sobrien u_int64_t name; 893109313Sobrien u_int32_t namesz; 894109313Sobrien u_int32_t descsz; 895109313Sobrien u_int32_t type; 896109313Sobrien u_int32_t desc; 897109313Sobrien char *s; 898109313Sobrien void *n; 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); 903110252Sobrien n = (void *)e + offset; 904109313Sobrien fprintf(out, "\nnote (%s):\n", shstrtab + name); 905110252Sobrien while (n < (void *)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); 909109313Sobrien s = n + sizeof(Elf_Note); 910109313Sobrien 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: 925109313Sobrien p = base + elf32_offsets[member]; 926109313Sobrien val = *p; 927109313Sobrien break; 928109313Sobrien case ELFCLASS64: 929109313Sobrien p = 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: 948109313Sobrien p = 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: 961109313Sobrien p = 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: 989109313Sobrien p = 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: 1002109313Sobrien p = 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: 1030109313Sobrien p = 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: 1043109313Sobrien p = 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: 1073109313Sobrien p = 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: 1086109313Sobrien p = 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