elfdump.c revision 267958
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: stable/10/usr.bin/elfdump/elfdump.c 267958 2014-06-27 14:42:13Z emaste $"); 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 86241737Sedstatic int 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), 120119794Sschweikh 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 127241737Sedstatic int 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), 132119794Sschweikh 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), 161119794Sschweikh 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 */ 235154958Smarcel case 0x70000000: return "DT_IA_64_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 } 241119794Sschweikh} 242109313Sobrien 243110256Sobrienstatic const char * 244109457Smarcele_machines(u_int mach) 245109457Smarcel{ 246153500Smarcel static char machdesc[64]; 247153500Smarcel 248109457Smarcel switch (mach) { 249109457Smarcel case EM_NONE: return "EM_NONE"; 250109457Smarcel case EM_M32: return "EM_M32"; 251109457Smarcel case EM_SPARC: return "EM_SPARC"; 252109457Smarcel case EM_386: return "EM_386"; 253109457Smarcel case EM_68K: return "EM_68K"; 254109457Smarcel case EM_88K: return "EM_88K"; 255109457Smarcel case EM_860: return "EM_860"; 256109457Smarcel case EM_MIPS: return "EM_MIPS"; 257153500Smarcel case EM_PPC: return "EM_PPC"; 258261002Sjhibbits case EM_PPC64: return "EM_PPC64"; 259153500Smarcel case EM_ARM: return "EM_ARM"; 260153500Smarcel case EM_ALPHA: return "EM_ALPHA (legacy)"; 261153500Smarcel case EM_SPARCV9:return "EM_SPARCV9"; 262109457Smarcel case EM_IA_64: return "EM_IA_64"; 263153500Smarcel case EM_X86_64: return "EM_X86_64"; 264109457Smarcel } 265153500Smarcel snprintf(machdesc, sizeof(machdesc), 266153500Smarcel "(unknown machine) -- type 0x%x", mach); 267153500Smarcel return (machdesc); 268119794Sschweikh} 269109313Sobrien 270241737Sedstatic const char *e_types[] = { 271109313Sobrien "ET_NONE", "ET_REL", "ET_EXEC", "ET_DYN", "ET_CORE" 272109313Sobrien}; 273109313Sobrien 274241737Sedstatic const char *ei_versions[] = { 275109313Sobrien "EV_NONE", "EV_CURRENT" 276109313Sobrien}; 277109313Sobrien 278241737Sedstatic const char *ei_classes[] = { 279109313Sobrien "ELFCLASSNONE", "ELFCLASS32", "ELFCLASS64" 280109313Sobrien}; 281109313Sobrien 282241737Sedstatic const char *ei_data[] = { 283109313Sobrien "ELFDATANONE", "ELFDATA2LSB", "ELFDATA2MSB" 284109313Sobrien}; 285109313Sobrien 286241737Sedstatic const char *ei_abis[256] = { 287109313Sobrien "ELFOSABI_SYSV", "ELFOSABI_HPUX", "ELFOSABI_NETBSD", "ELFOSABI_LINUX", 288226434Smarcel "ELFOSABI_HURD", "ELFOSABI_86OPEN", "ELFOSABI_SOLARIS", "ELFOSABI_AIX", 289226434Smarcel "ELFOSABI_IRIX", "ELFOSABI_FREEBSD", "ELFOSABI_TRU64", 290226434Smarcel "ELFOSABI_MODESTO", "ELFOSABI_OPENBSD", 291226434Smarcel [255] = "ELFOSABI_STANDALONE" 292109313Sobrien}; 293109313Sobrien 294241737Sedstatic const char *p_types[] = { 295109313Sobrien "PT_NULL", "PT_LOAD", "PT_DYNAMIC", "PT_INTERP", "PT_NOTE", 296126484Sjake "PT_SHLIB", "PT_PHDR", "PT_TLS" 297109313Sobrien}; 298109313Sobrien 299241737Sedstatic const char *p_flags[] = { 300109313Sobrien "", "PF_X", "PF_W", "PF_X|PF_W", "PF_R", "PF_X|PF_R", "PF_W|PF_R", 301109313Sobrien "PF_X|PF_W|PF_R" 302109313Sobrien}; 303109313Sobrien 304109329Sobrien/* http://www.sco.com/developers/gabi/latest/ch4.sheader.html#sh_type */ 305110256Sobrienstatic const char * 306109332Sobriensh_types(u_int64_t sht) { 307109329Sobrien switch (sht) { 308109329Sobrien case 0: return "SHT_NULL"; 309109329Sobrien case 1: return "SHT_PROGBITS"; 310109329Sobrien case 2: return "SHT_SYMTAB"; 311109329Sobrien case 3: return "SHT_STRTAB"; 312109329Sobrien case 4: return "SHT_RELA"; 313109329Sobrien case 5: return "SHT_HASH"; 314109329Sobrien case 6: return "SHT_DYNAMIC"; 315109329Sobrien case 7: return "SHT_NOTE"; 316109329Sobrien case 8: return "SHT_NOBITS"; 317109329Sobrien case 9: return "SHT_REL"; 318109329Sobrien case 10: return "SHT_SHLIB"; 319109329Sobrien case 11: return "SHT_DYNSYM"; 320109329Sobrien case 14: return "SHT_INIT_ARRAY"; 321109329Sobrien case 15: return "SHT_FINI_ARRAY"; 322109329Sobrien case 16: return "SHT_PREINIT_ARRAY"; 323109329Sobrien case 17: return "SHT_GROUP"; 324109329Sobrien case 18: return "SHT_SYMTAB_SHNDX"; 325109332Sobrien /* 0x60000000 - 0x6fffffff operating system-specific semantics */ 326109329Sobrien case 0x6ffffff0: return "XXX:VERSYM"; 327211188Srpaulo case 0x6ffffff4: return "SHT_SUNW_dof"; 328109329Sobrien case 0x6ffffff7: return "SHT_GNU_LIBLIST"; 329109329Sobrien case 0x6ffffffc: return "XXX:VERDEF"; 330109329Sobrien case 0x6ffffffd: return "SHT_SUNW(GNU)_verdef"; 331109329Sobrien case 0x6ffffffe: return "SHT_SUNW(GNU)_verneed"; 332109329Sobrien case 0x6fffffff: return "SHT_SUNW(GNU)_versym"; 333109332Sobrien /* 0x70000000 - 0x7fffffff processor-specific semantics */ 334109457Smarcel case 0x70000000: return "SHT_IA_64_EXT"; 335109457Smarcel case 0x70000001: return "SHT_IA_64_UNWIND"; 336109329Sobrien case 0x7ffffffd: return "XXX:AUXILIARY"; 337109329Sobrien case 0x7fffffff: return "XXX:FILTER"; 338109332Sobrien /* 0x80000000 - 0xffffffff application programs */ 339109329Sobrien default: return "ERROR: SHT NOT DEFINED"; 340109329Sobrien } 341119795Sschweikh} 342109313Sobrien 343241737Sedstatic const char *sh_flags[] = { 344109313Sobrien "", "SHF_WRITE", "SHF_ALLOC", "SHF_WRITE|SHF_ALLOC", "SHF_EXECINSTR", 345109313Sobrien "SHF_WRITE|SHF_EXECINSTR", "SHF_ALLOC|SHF_EXECINSTR", 346109313Sobrien "SHF_WRITE|SHF_ALLOC|SHF_EXECINSTR" 347109313Sobrien}; 348109313Sobrien 349241737Sedstatic const char *st_types[] = { 350109313Sobrien "STT_NOTYPE", "STT_OBJECT", "STT_FUNC", "STT_SECTION", "STT_FILE" 351109313Sobrien}; 352109313Sobrien 353241737Sedstatic const char *st_bindings[] = { 354109313Sobrien "STB_LOCAL", "STB_GLOBAL", "STB_WEAK" 355109313Sobrien}; 356109313Sobrien 357241737Sedstatic char *dynstr; 358241737Sedstatic char *shstrtab; 359241737Sedstatic char *strtab; 360241737Sedstatic FILE *out; 361109313Sobrien 362241737Sedstatic u_int64_t elf_get_byte(Elf32_Ehdr *e, void *base, elf_member_t member); 363241737Sedstatic u_int64_t elf_get_quarter(Elf32_Ehdr *e, void *base, 364241737Sed elf_member_t member); 365241737Sed#if 0 366241737Sedstatic u_int64_t elf_get_half(Elf32_Ehdr *e, void *base, elf_member_t member); 367241737Sed#endif 368241737Sedstatic u_int64_t elf_get_word(Elf32_Ehdr *e, void *base, elf_member_t member); 369241737Sedstatic u_int64_t elf_get_quad(Elf32_Ehdr *e, void *base, elf_member_t member); 370109313Sobrien 371267958Semastestatic void elf_print_ehdr(Elf32_Ehdr *e, void *sh); 372241737Sedstatic void elf_print_phdr(Elf32_Ehdr *e, void *p); 373241737Sedstatic void elf_print_shdr(Elf32_Ehdr *e, void *sh); 374241737Sedstatic void elf_print_symtab(Elf32_Ehdr *e, void *sh, char *str); 375241737Sedstatic void elf_print_dynamic(Elf32_Ehdr *e, void *sh); 376241737Sedstatic void elf_print_rel(Elf32_Ehdr *e, void *r); 377241737Sedstatic void elf_print_rela(Elf32_Ehdr *e, void *ra); 378241737Sedstatic void elf_print_interp(Elf32_Ehdr *e, void *p); 379241737Sedstatic void elf_print_got(Elf32_Ehdr *e, void *sh); 380241737Sedstatic void elf_print_hash(Elf32_Ehdr *e, void *sh); 381241737Sedstatic void elf_print_note(Elf32_Ehdr *e, void *sh); 382109313Sobrien 383241737Sedstatic void usage(void); 384109313Sobrien 385267958Semaste/* 386267958Semaste * Helpers for ELF files with shnum or shstrndx values that don't fit in the 387267958Semaste * ELF header. If the values are too large then an escape value is used to 388267958Semaste * indicate that the actual value is found in one of section 0's fields. 389267958Semaste */ 390267958Semastestatic uint64_t 391267958Semasteelf_get_shnum(Elf32_Ehdr *e, void *sh) 392267958Semaste{ 393267958Semaste uint64_t shnum; 394267958Semaste 395267958Semaste shnum = elf_get_quarter(e, e, E_SHNUM); 396267958Semaste if (shnum == 0) 397267958Semaste shnum = elf_get_word(e, (char *)sh, SH_SIZE); 398267958Semaste return shnum; 399267958Semaste} 400267958Semaste 401267958Semastestatic uint64_t 402267958Semasteelf_get_shstrndx(Elf32_Ehdr *e, void *sh) 403267958Semaste{ 404267958Semaste uint64_t shstrndx; 405267958Semaste 406267958Semaste shstrndx = elf_get_quarter(e, e, E_SHSTRNDX); 407267958Semaste if (shstrndx == SHN_XINDEX) 408267958Semaste shstrndx = elf_get_word(e, (char *)sh, SH_LINK); 409267958Semaste return shstrndx; 410267958Semaste} 411267958Semaste 412109313Sobrienint 413109313Sobrienmain(int ac, char **av) 414109313Sobrien{ 415109313Sobrien u_int64_t phoff; 416109313Sobrien u_int64_t shoff; 417109313Sobrien u_int64_t phentsize; 418109313Sobrien u_int64_t phnum; 419109313Sobrien u_int64_t shentsize; 420109313Sobrien u_int64_t shnum; 421109313Sobrien u_int64_t shstrndx; 422109313Sobrien u_int64_t offset; 423109313Sobrien u_int64_t name; 424109313Sobrien u_int64_t type; 425109313Sobrien struct stat sb; 426109313Sobrien u_int flags; 427110252Sobrien Elf32_Ehdr *e; 428109313Sobrien void *p; 429109313Sobrien void *sh; 430109313Sobrien void *v; 431109313Sobrien int fd; 432109313Sobrien int ch; 433109313Sobrien int i; 434109313Sobrien 435109313Sobrien out = stdout; 436109313Sobrien flags = 0; 437109313Sobrien while ((ch = getopt(ac, av, "acdeiGhnprsw:")) != -1) 438109313Sobrien switch (ch) { 439109313Sobrien case 'a': 440109313Sobrien flags = ED_ALL; 441109313Sobrien break; 442109313Sobrien case 'c': 443109313Sobrien flags |= ED_SHDR; 444109313Sobrien break; 445109313Sobrien case 'd': 446109313Sobrien flags |= ED_DYN; 447109313Sobrien break; 448109313Sobrien case 'e': 449109313Sobrien flags |= ED_EHDR; 450109313Sobrien break; 451109313Sobrien case 'i': 452109313Sobrien flags |= ED_INTERP; 453109313Sobrien break; 454109313Sobrien case 'G': 455109313Sobrien flags |= ED_GOT; 456109313Sobrien break; 457109313Sobrien case 'h': 458109313Sobrien flags |= ED_HASH; 459109313Sobrien break; 460109313Sobrien case 'n': 461109313Sobrien flags |= ED_NOTE; 462109313Sobrien break; 463109313Sobrien case 'p': 464109313Sobrien flags |= ED_PHDR; 465109313Sobrien break; 466109313Sobrien case 'r': 467109313Sobrien flags |= ED_REL; 468109313Sobrien break; 469109313Sobrien case 's': 470109313Sobrien flags |= ED_SYMTAB; 471109313Sobrien break; 472109313Sobrien case 'w': 473109313Sobrien if ((out = fopen(optarg, "w")) == NULL) 474109313Sobrien err(1, "%s", optarg); 475109313Sobrien break; 476109313Sobrien case '?': 477109313Sobrien default: 478109313Sobrien usage(); 479109313Sobrien } 480109313Sobrien ac -= optind; 481109313Sobrien av += optind; 482109313Sobrien if (ac == 0 || flags == 0) 483109313Sobrien usage(); 484109313Sobrien if ((fd = open(*av, O_RDONLY)) < 0 || 485109313Sobrien fstat(fd, &sb) < 0) 486117009Sru err(1, "%s", *av); 487109313Sobrien e = mmap(NULL, sb.st_size, PROT_READ, MAP_SHARED, fd, 0); 488109313Sobrien if (e == MAP_FAILED) 489109313Sobrien err(1, NULL); 490109313Sobrien if (!IS_ELF(*(Elf32_Ehdr *)e)) 491109313Sobrien errx(1, "not an elf file"); 492109313Sobrien phoff = elf_get_off(e, e, E_PHOFF); 493109313Sobrien shoff = elf_get_off(e, e, E_SHOFF); 494109313Sobrien phentsize = elf_get_quarter(e, e, E_PHENTSIZE); 495109313Sobrien phnum = elf_get_quarter(e, e, E_PHNUM); 496109313Sobrien shentsize = elf_get_quarter(e, e, E_SHENTSIZE); 497110256Sobrien p = (char *)e + phoff; 498267958Semaste if (shoff > 0) { 499267958Semaste sh = (char *)e + shoff; 500267958Semaste shnum = elf_get_shnum(e, sh); 501267958Semaste shstrndx = elf_get_shstrndx(e, sh); 502267958Semaste offset = elf_get_off(e, (char *)sh + shstrndx * shentsize, 503267958Semaste SH_OFFSET); 504267958Semaste shstrtab = (char *)e + offset; 505267958Semaste } else { 506267958Semaste sh = NULL; 507267958Semaste shnum = 0; 508267958Semaste shstrndx = 0; 509267958Semaste shstrtab = NULL; 510267958Semaste } 511110256Sobrien for (i = 0; (u_int64_t)i < shnum; i++) { 512110256Sobrien name = elf_get_word(e, (char *)sh + i * shentsize, SH_NAME); 513110256Sobrien offset = elf_get_off(e, (char *)sh + i * shentsize, SH_OFFSET); 514109313Sobrien if (strcmp(shstrtab + name, ".strtab") == 0) 515110252Sobrien strtab = (char *)e + offset; 516109313Sobrien if (strcmp(shstrtab + name, ".dynstr") == 0) 517110252Sobrien dynstr = (char *)e + offset; 518109313Sobrien } 519109313Sobrien if (flags & ED_EHDR) 520267958Semaste elf_print_ehdr(e, sh); 521109313Sobrien if (flags & ED_PHDR) 522109313Sobrien elf_print_phdr(e, p); 523109313Sobrien if (flags & ED_SHDR) 524109313Sobrien elf_print_shdr(e, sh); 525110256Sobrien for (i = 0; (u_int64_t)i < phnum; i++) { 526110256Sobrien v = (char *)p + i * phentsize; 527109313Sobrien type = elf_get_word(e, v, P_TYPE); 528109313Sobrien switch (type) { 529109313Sobrien case PT_INTERP: 530109313Sobrien if (flags & ED_INTERP) 531109313Sobrien elf_print_interp(e, v); 532109313Sobrien break; 533109313Sobrien case PT_NULL: 534109313Sobrien case PT_LOAD: 535109313Sobrien case PT_DYNAMIC: 536109313Sobrien case PT_NOTE: 537109313Sobrien case PT_SHLIB: 538109313Sobrien case PT_PHDR: 539109313Sobrien break; 540109313Sobrien } 541109313Sobrien } 542110256Sobrien for (i = 0; (u_int64_t)i < shnum; i++) { 543110256Sobrien v = (char *)sh + i * shentsize; 544109313Sobrien type = elf_get_word(e, v, SH_TYPE); 545109313Sobrien switch (type) { 546109313Sobrien case SHT_SYMTAB: 547109313Sobrien if (flags & ED_SYMTAB) 548109313Sobrien elf_print_symtab(e, v, strtab); 549109313Sobrien break; 550109313Sobrien case SHT_DYNAMIC: 551109313Sobrien if (flags & ED_DYN) 552109313Sobrien elf_print_dynamic(e, v); 553109313Sobrien break; 554109313Sobrien case SHT_RELA: 555109313Sobrien if (flags & ED_REL) 556109313Sobrien elf_print_rela(e, v); 557109313Sobrien break; 558109313Sobrien case SHT_REL: 559109313Sobrien if (flags & ED_REL) 560109313Sobrien elf_print_rel(e, v); 561109313Sobrien break; 562109313Sobrien case SHT_NOTE: 563109313Sobrien name = elf_get_word(e, v, SH_NAME); 564109313Sobrien if (flags & ED_NOTE && 565109313Sobrien strcmp(shstrtab + name, ".note.ABI-tag") == 0) 566109313Sobrien elf_print_note(e, v); 567109313Sobrien break; 568109313Sobrien case SHT_DYNSYM: 569109313Sobrien if (flags & ED_SYMTAB) 570109313Sobrien elf_print_symtab(e, v, dynstr); 571109313Sobrien break; 572109313Sobrien case SHT_PROGBITS: 573109313Sobrien name = elf_get_word(e, v, SH_NAME); 574109313Sobrien if (flags & ED_GOT && 575109313Sobrien strcmp(shstrtab + name, ".got") == 0) 576109313Sobrien elf_print_got(e, v); 577109313Sobrien break; 578109313Sobrien case SHT_HASH: 579109313Sobrien if (flags & ED_HASH) 580109313Sobrien elf_print_hash(e, v); 581109313Sobrien break; 582109313Sobrien case SHT_NULL: 583109313Sobrien case SHT_STRTAB: 584109313Sobrien case SHT_NOBITS: 585109313Sobrien case SHT_SHLIB: 586109313Sobrien break; 587109313Sobrien } 588109313Sobrien } 589109313Sobrien 590109313Sobrien return 0; 591109313Sobrien} 592109313Sobrien 593241737Sedstatic void 594267958Semasteelf_print_ehdr(Elf32_Ehdr *e, void *sh) 595109313Sobrien{ 596109313Sobrien u_int64_t class; 597109313Sobrien u_int64_t data; 598109313Sobrien u_int64_t osabi; 599109313Sobrien u_int64_t type; 600109313Sobrien u_int64_t machine; 601109313Sobrien u_int64_t version; 602109313Sobrien u_int64_t entry; 603109313Sobrien u_int64_t phoff; 604109313Sobrien u_int64_t shoff; 605109313Sobrien u_int64_t flags; 606109313Sobrien u_int64_t ehsize; 607109313Sobrien u_int64_t phentsize; 608109313Sobrien u_int64_t phnum; 609109313Sobrien u_int64_t shentsize; 610109313Sobrien u_int64_t shnum; 611109313Sobrien u_int64_t shstrndx; 612109313Sobrien 613109313Sobrien class = elf_get_byte(e, e, E_CLASS); 614109313Sobrien data = elf_get_byte(e, e, E_DATA); 615109313Sobrien osabi = elf_get_byte(e, e, E_OSABI); 616109313Sobrien type = elf_get_quarter(e, e, E_TYPE); 617109313Sobrien machine = elf_get_quarter(e, e, E_MACHINE); 618109313Sobrien version = elf_get_word(e, e, E_VERSION); 619109313Sobrien entry = elf_get_addr(e, e, E_ENTRY); 620109313Sobrien phoff = elf_get_off(e, e, E_PHOFF); 621109313Sobrien shoff = elf_get_off(e, e, E_SHOFF); 622109313Sobrien flags = elf_get_word(e, e, E_FLAGS); 623109313Sobrien ehsize = elf_get_quarter(e, e, E_EHSIZE); 624109313Sobrien phentsize = elf_get_quarter(e, e, E_PHENTSIZE); 625109313Sobrien phnum = elf_get_quarter(e, e, E_PHNUM); 626109313Sobrien shentsize = elf_get_quarter(e, e, E_SHENTSIZE); 627109313Sobrien fprintf(out, "\nelf header:\n"); 628109313Sobrien fprintf(out, "\n"); 629109313Sobrien fprintf(out, "\te_ident: %s %s %s\n", ei_classes[class], ei_data[data], 630109313Sobrien ei_abis[osabi]); 631109313Sobrien fprintf(out, "\te_type: %s\n", e_types[type]); 632109457Smarcel fprintf(out, "\te_machine: %s\n", e_machines(machine)); 633109313Sobrien fprintf(out, "\te_version: %s\n", ei_versions[version]); 634110257Sobrien fprintf(out, "\te_entry: %#jx\n", (intmax_t)entry); 635110257Sobrien fprintf(out, "\te_phoff: %jd\n", (intmax_t)phoff); 636110257Sobrien fprintf(out, "\te_shoff: %jd\n", (intmax_t)shoff); 637110257Sobrien fprintf(out, "\te_flags: %jd\n", (intmax_t)flags); 638110257Sobrien fprintf(out, "\te_ehsize: %jd\n", (intmax_t)ehsize); 639110257Sobrien fprintf(out, "\te_phentsize: %jd\n", (intmax_t)phentsize); 640110257Sobrien fprintf(out, "\te_phnum: %jd\n", (intmax_t)phnum); 641110257Sobrien fprintf(out, "\te_shentsize: %jd\n", (intmax_t)shentsize); 642267958Semaste if (sh != NULL) { 643267958Semaste shnum = elf_get_shnum(e, sh); 644267958Semaste shstrndx = elf_get_shstrndx(e, sh); 645267958Semaste fprintf(out, "\te_shnum: %jd\n", (intmax_t)shnum); 646267958Semaste fprintf(out, "\te_shstrndx: %jd\n", (intmax_t)shstrndx); 647267958Semaste } 648109313Sobrien} 649109313Sobrien 650241737Sedstatic void 651110252Sobrienelf_print_phdr(Elf32_Ehdr *e, void *p) 652109313Sobrien{ 653109313Sobrien u_int64_t phentsize; 654109313Sobrien u_int64_t phnum; 655109313Sobrien u_int64_t type; 656109313Sobrien u_int64_t offset; 657109313Sobrien u_int64_t vaddr; 658109313Sobrien u_int64_t paddr; 659109313Sobrien u_int64_t filesz; 660109313Sobrien u_int64_t memsz; 661109313Sobrien u_int64_t flags; 662109313Sobrien u_int64_t align; 663109313Sobrien void *v; 664109313Sobrien int i; 665109313Sobrien 666109313Sobrien phentsize = elf_get_quarter(e, e, E_PHENTSIZE); 667109313Sobrien phnum = elf_get_quarter(e, e, E_PHNUM); 668109313Sobrien fprintf(out, "\nprogram header:\n"); 669110256Sobrien for (i = 0; (u_int64_t)i < phnum; i++) { 670110256Sobrien v = (char *)p + i * phentsize; 671109313Sobrien type = elf_get_word(e, v, P_TYPE); 672109313Sobrien offset = elf_get_off(e, v, P_OFFSET); 673109313Sobrien vaddr = elf_get_addr(e, v, P_VADDR); 674109313Sobrien paddr = elf_get_addr(e, v, P_PADDR); 675109313Sobrien filesz = elf_get_size(e, v, P_FILESZ); 676109313Sobrien memsz = elf_get_size(e, v, P_MEMSZ); 677109313Sobrien flags = elf_get_word(e, v, P_FLAGS); 678109313Sobrien align = elf_get_size(e, v, P_ALIGN); 679109313Sobrien fprintf(out, "\n"); 680109313Sobrien fprintf(out, "entry: %d\n", i); 681109313Sobrien fprintf(out, "\tp_type: %s\n", p_types[type & 0x7]); 682110257Sobrien fprintf(out, "\tp_offset: %jd\n", (intmax_t)offset); 683110257Sobrien fprintf(out, "\tp_vaddr: %#jx\n", (intmax_t)vaddr); 684110257Sobrien fprintf(out, "\tp_paddr: %#jx\n", (intmax_t)paddr); 685110257Sobrien fprintf(out, "\tp_filesz: %jd\n", (intmax_t)filesz); 686110257Sobrien fprintf(out, "\tp_memsz: %jd\n", (intmax_t)memsz); 687109313Sobrien fprintf(out, "\tp_flags: %s\n", p_flags[flags]); 688110257Sobrien fprintf(out, "\tp_align: %jd\n", (intmax_t)align); 689109313Sobrien } 690109313Sobrien} 691109313Sobrien 692241737Sedstatic void 693110252Sobrienelf_print_shdr(Elf32_Ehdr *e, void *sh) 694109313Sobrien{ 695109313Sobrien u_int64_t shentsize; 696109313Sobrien u_int64_t shnum; 697109313Sobrien u_int64_t name; 698109313Sobrien u_int64_t type; 699109313Sobrien u_int64_t flags; 700109313Sobrien u_int64_t addr; 701109313Sobrien u_int64_t offset; 702109313Sobrien u_int64_t size; 703110256Sobrien u_int64_t shlink; 704109313Sobrien u_int64_t info; 705109313Sobrien u_int64_t addralign; 706109313Sobrien u_int64_t entsize; 707109313Sobrien void *v; 708109313Sobrien int i; 709109313Sobrien 710267958Semaste if (sh == NULL) { 711267958Semaste fprintf(out, "\nNo section headers\n"); 712267958Semaste return; 713267958Semaste } 714267958Semaste 715109313Sobrien shentsize = elf_get_quarter(e, e, E_SHENTSIZE); 716267958Semaste shnum = elf_get_shnum(e, sh); 717109313Sobrien fprintf(out, "\nsection header:\n"); 718110256Sobrien for (i = 0; (u_int64_t)i < shnum; i++) { 719110256Sobrien v = (char *)sh + i * shentsize; 720109313Sobrien name = elf_get_word(e, v, SH_NAME); 721109313Sobrien type = elf_get_word(e, v, SH_TYPE); 722109313Sobrien flags = elf_get_word(e, v, SH_FLAGS); 723109313Sobrien addr = elf_get_addr(e, v, SH_ADDR); 724109313Sobrien offset = elf_get_off(e, v, SH_OFFSET); 725109313Sobrien size = elf_get_size(e, v, SH_SIZE); 726110256Sobrien shlink = elf_get_word(e, v, SH_LINK); 727109313Sobrien info = elf_get_word(e, v, SH_INFO); 728109313Sobrien addralign = elf_get_size(e, v, SH_ADDRALIGN); 729109313Sobrien entsize = elf_get_size(e, v, SH_ENTSIZE); 730109313Sobrien fprintf(out, "\n"); 731109313Sobrien fprintf(out, "entry: %d\n", i); 732109313Sobrien fprintf(out, "\tsh_name: %s\n", shstrtab + name); 733109329Sobrien fprintf(out, "\tsh_type: %s\n", sh_types(type)); 734109313Sobrien fprintf(out, "\tsh_flags: %s\n", sh_flags[flags & 0x7]); 735110257Sobrien fprintf(out, "\tsh_addr: %#jx\n", addr); 736110257Sobrien fprintf(out, "\tsh_offset: %jd\n", (intmax_t)offset); 737110257Sobrien fprintf(out, "\tsh_size: %jd\n", (intmax_t)size); 738110257Sobrien fprintf(out, "\tsh_link: %jd\n", (intmax_t)shlink); 739110257Sobrien fprintf(out, "\tsh_info: %jd\n", (intmax_t)info); 740110257Sobrien fprintf(out, "\tsh_addralign: %jd\n", (intmax_t)addralign); 741110257Sobrien fprintf(out, "\tsh_entsize: %jd\n", (intmax_t)entsize); 742109313Sobrien } 743109313Sobrien} 744109313Sobrien 745241737Sedstatic void 746110252Sobrienelf_print_symtab(Elf32_Ehdr *e, void *sh, char *str) 747109313Sobrien{ 748109313Sobrien u_int64_t offset; 749109313Sobrien u_int64_t entsize; 750109313Sobrien u_int64_t size; 751109313Sobrien u_int64_t name; 752109313Sobrien u_int64_t value; 753109313Sobrien u_int64_t info; 754109313Sobrien u_int64_t shndx; 755109313Sobrien void *st; 756109313Sobrien int len; 757109313Sobrien int i; 758109313Sobrien 759109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 760109313Sobrien entsize = elf_get_size(e, sh, SH_ENTSIZE); 761109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 762109313Sobrien name = elf_get_word(e, sh, SH_NAME); 763109313Sobrien len = size / entsize; 764109313Sobrien fprintf(out, "\nsymbol table (%s):\n", shstrtab + name); 765109313Sobrien for (i = 0; i < len; i++) { 766110256Sobrien st = (char *)e + offset + i * entsize; 767109313Sobrien name = elf_get_word(e, st, ST_NAME); 768109313Sobrien value = elf_get_addr(e, st, ST_VALUE); 769109313Sobrien size = elf_get_size(e, st, ST_SIZE); 770109313Sobrien info = elf_get_byte(e, st, ST_INFO); 771109313Sobrien shndx = elf_get_quarter(e, st, ST_SHNDX); 772109313Sobrien fprintf(out, "\n"); 773109313Sobrien fprintf(out, "entry: %d\n", i); 774109313Sobrien fprintf(out, "\tst_name: %s\n", str + name); 775110257Sobrien fprintf(out, "\tst_value: %#jx\n", value); 776110257Sobrien fprintf(out, "\tst_size: %jd\n", (intmax_t)size); 777109313Sobrien fprintf(out, "\tst_info: %s %s\n", 778109313Sobrien st_types[ELF32_ST_TYPE(info)], 779109313Sobrien st_bindings[ELF32_ST_BIND(info)]); 780110257Sobrien fprintf(out, "\tst_shndx: %jd\n", (intmax_t)shndx); 781109313Sobrien } 782109313Sobrien} 783109313Sobrien 784241737Sedstatic void 785110252Sobrienelf_print_dynamic(Elf32_Ehdr *e, void *sh) 786109313Sobrien{ 787109313Sobrien u_int64_t offset; 788109313Sobrien u_int64_t entsize; 789109313Sobrien u_int64_t size; 790109313Sobrien int64_t tag; 791109313Sobrien u_int64_t ptr; 792109313Sobrien u_int64_t val; 793109313Sobrien void *d; 794109313Sobrien int i; 795109313Sobrien 796109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 797109313Sobrien entsize = elf_get_size(e, sh, SH_ENTSIZE); 798109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 799109313Sobrien fprintf(out, "\ndynamic:\n"); 800110256Sobrien for (i = 0; (u_int64_t)i < size / entsize; i++) { 801110256Sobrien d = (char *)e + offset + i * entsize; 802109313Sobrien tag = elf_get_size(e, d, D_TAG); 803109313Sobrien ptr = elf_get_size(e, d, D_PTR); 804109313Sobrien val = elf_get_addr(e, d, D_VAL); 805109313Sobrien fprintf(out, "\n"); 806109313Sobrien fprintf(out, "entry: %d\n", i); 807109332Sobrien fprintf(out, "\td_tag: %s\n", d_tags(tag)); 808109313Sobrien switch (tag) { 809109313Sobrien case DT_NEEDED: 810109313Sobrien case DT_SONAME: 811109313Sobrien case DT_RPATH: 812109313Sobrien fprintf(out, "\td_val: %s\n", dynstr + val); 813109313Sobrien break; 814109313Sobrien case DT_PLTRELSZ: 815109313Sobrien case DT_RELA: 816109313Sobrien case DT_RELASZ: 817109313Sobrien case DT_RELAENT: 818109313Sobrien case DT_STRSZ: 819109313Sobrien case DT_SYMENT: 820109313Sobrien case DT_RELSZ: 821109313Sobrien case DT_RELENT: 822109313Sobrien case DT_PLTREL: 823110257Sobrien fprintf(out, "\td_val: %jd\n", (intmax_t)val); 824109313Sobrien break; 825109313Sobrien case DT_PLTGOT: 826109313Sobrien case DT_HASH: 827109313Sobrien case DT_STRTAB: 828109313Sobrien case DT_SYMTAB: 829109313Sobrien case DT_INIT: 830109313Sobrien case DT_FINI: 831109313Sobrien case DT_REL: 832109313Sobrien case DT_JMPREL: 833110257Sobrien fprintf(out, "\td_ptr: %#jx\n", ptr); 834109313Sobrien break; 835109313Sobrien case DT_NULL: 836109313Sobrien case DT_SYMBOLIC: 837109313Sobrien case DT_DEBUG: 838109313Sobrien case DT_TEXTREL: 839109313Sobrien break; 840109313Sobrien } 841109313Sobrien } 842109313Sobrien} 843109313Sobrien 844241737Sedstatic void 845110252Sobrienelf_print_rela(Elf32_Ehdr *e, void *sh) 846109313Sobrien{ 847109313Sobrien u_int64_t offset; 848109313Sobrien u_int64_t entsize; 849109313Sobrien u_int64_t size; 850109313Sobrien u_int64_t name; 851109313Sobrien u_int64_t info; 852109313Sobrien int64_t addend; 853109313Sobrien void *ra; 854109313Sobrien void *v; 855109313Sobrien int i; 856109313Sobrien 857109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 858109313Sobrien entsize = elf_get_size(e, sh, SH_ENTSIZE); 859109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 860109313Sobrien name = elf_get_word(e, sh, SH_NAME); 861110256Sobrien v = (char *)e + offset; 862109313Sobrien fprintf(out, "\nrelocation with addend (%s):\n", shstrtab + name); 863110256Sobrien for (i = 0; (u_int64_t)i < size / entsize; i++) { 864110256Sobrien ra = (char *)v + i * entsize; 865109313Sobrien offset = elf_get_addr(e, ra, RA_OFFSET); 866109313Sobrien info = elf_get_word(e, ra, RA_INFO); 867109313Sobrien addend = elf_get_off(e, ra, RA_ADDEND); 868109313Sobrien fprintf(out, "\n"); 869109313Sobrien fprintf(out, "entry: %d\n", i); 870110257Sobrien fprintf(out, "\tr_offset: %#jx\n", offset); 871110257Sobrien fprintf(out, "\tr_info: %jd\n", (intmax_t)info); 872110257Sobrien fprintf(out, "\tr_addend: %jd\n", (intmax_t)addend); 873109313Sobrien } 874109313Sobrien} 875109313Sobrien 876241737Sedstatic void 877110252Sobrienelf_print_rel(Elf32_Ehdr *e, void *sh) 878109313Sobrien{ 879109313Sobrien u_int64_t offset; 880109313Sobrien u_int64_t entsize; 881109313Sobrien u_int64_t size; 882109313Sobrien u_int64_t name; 883109313Sobrien u_int64_t info; 884109313Sobrien void *r; 885109313Sobrien void *v; 886109313Sobrien int i; 887109313Sobrien 888109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 889109313Sobrien entsize = elf_get_size(e, sh, SH_ENTSIZE); 890109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 891109313Sobrien name = elf_get_word(e, sh, SH_NAME); 892110256Sobrien v = (char *)e + offset; 893109313Sobrien fprintf(out, "\nrelocation (%s):\n", shstrtab + name); 894110256Sobrien for (i = 0; (u_int64_t)i < size / entsize; i++) { 895110256Sobrien r = (char *)v + i * entsize; 896109313Sobrien offset = elf_get_addr(e, r, R_OFFSET); 897109313Sobrien info = elf_get_word(e, r, R_INFO); 898109313Sobrien fprintf(out, "\n"); 899109313Sobrien fprintf(out, "entry: %d\n", i); 900110257Sobrien fprintf(out, "\tr_offset: %#jx\n", offset); 901110257Sobrien fprintf(out, "\tr_info: %jd\n", (intmax_t)info); 902109313Sobrien } 903109313Sobrien} 904109313Sobrien 905241737Sedstatic void 906110252Sobrienelf_print_interp(Elf32_Ehdr *e, void *p) 907109313Sobrien{ 908109313Sobrien u_int64_t offset; 909109313Sobrien char *s; 910109313Sobrien 911109313Sobrien offset = elf_get_off(e, p, P_OFFSET); 912110252Sobrien s = (char *)e + offset; 913109313Sobrien fprintf(out, "\ninterp:\n"); 914109313Sobrien fprintf(out, "\t%s\n", s); 915109313Sobrien} 916109313Sobrien 917241737Sedstatic void 918110252Sobrienelf_print_got(Elf32_Ehdr *e, void *sh) 919109313Sobrien{ 920109313Sobrien u_int64_t offset; 921109313Sobrien u_int64_t addralign; 922109313Sobrien u_int64_t size; 923109313Sobrien u_int64_t addr; 924109313Sobrien void *v; 925109313Sobrien int i; 926109313Sobrien 927109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 928109313Sobrien addralign = elf_get_size(e, sh, SH_ADDRALIGN); 929109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 930110256Sobrien v = (char *)e + offset; 931109313Sobrien fprintf(out, "\nglobal offset table:\n"); 932110256Sobrien for (i = 0; (u_int64_t)i < size / addralign; i++) { 933110256Sobrien addr = elf_get_addr(e, (char *)v + i * addralign, 0); 934109313Sobrien fprintf(out, "\n"); 935109313Sobrien fprintf(out, "entry: %d\n", i); 936110257Sobrien fprintf(out, "\t%#jx\n", addr); 937109313Sobrien } 938109313Sobrien} 939109313Sobrien 940241737Sedstatic void 941110256Sobrienelf_print_hash(Elf32_Ehdr *e __unused, void *sh __unused) 942109313Sobrien{ 943109313Sobrien} 944109313Sobrien 945241737Sedstatic void 946110252Sobrienelf_print_note(Elf32_Ehdr *e, void *sh) 947109313Sobrien{ 948109313Sobrien u_int64_t offset; 949109313Sobrien u_int64_t size; 950109313Sobrien u_int64_t name; 951109313Sobrien u_int32_t namesz; 952109313Sobrien u_int32_t descsz; 953109313Sobrien u_int32_t desc; 954110256Sobrien char *n, *s; 955109313Sobrien 956109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 957109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 958109313Sobrien name = elf_get_word(e, sh, SH_NAME); 959110256Sobrien n = (char *)e + offset; 960109313Sobrien fprintf(out, "\nnote (%s):\n", shstrtab + name); 961110256Sobrien while (n < ((char *)e + offset + size)) { 962109313Sobrien namesz = elf_get_word(e, n, N_NAMESZ); 963109313Sobrien descsz = elf_get_word(e, n, N_DESCSZ); 964110256Sobrien s = n + sizeof(Elf_Note); 965110256Sobrien desc = elf_get_word(e, n + sizeof(Elf_Note) + namesz, 0); 966109313Sobrien fprintf(out, "\t%s %d\n", s, desc); 967109313Sobrien n += sizeof(Elf_Note) + namesz + descsz; 968109313Sobrien } 969109313Sobrien} 970109313Sobrien 971241737Sedstatic u_int64_t 972109313Sobrienelf_get_byte(Elf32_Ehdr *e, void *base, elf_member_t member) 973109313Sobrien{ 974109313Sobrien u_int64_t val; 975109313Sobrien 976109313Sobrien val = 0; 977109313Sobrien switch (e->e_ident[EI_CLASS]) { 978109313Sobrien case ELFCLASS32: 979226434Smarcel val = ((uint8_t *)base)[elf32_offsets[member]]; 980109313Sobrien break; 981109313Sobrien case ELFCLASS64: 982226434Smarcel val = ((uint8_t *)base)[elf64_offsets[member]]; 983109313Sobrien break; 984109313Sobrien case ELFCLASSNONE: 985109313Sobrien errx(1, "invalid class"); 986109313Sobrien } 987109313Sobrien 988109313Sobrien return val; 989109313Sobrien} 990109313Sobrien 991241737Sedstatic u_int64_t 992109313Sobrienelf_get_quarter(Elf32_Ehdr *e, void *base, elf_member_t member) 993109313Sobrien{ 994109313Sobrien u_int64_t val; 995109313Sobrien 996109313Sobrien val = 0; 997109313Sobrien switch (e->e_ident[EI_CLASS]) { 998109313Sobrien case ELFCLASS32: 999118680Smarcel base = (char *)base + elf32_offsets[member]; 1000109313Sobrien switch (e->e_ident[EI_DATA]) { 1001109313Sobrien case ELFDATA2MSB: 1002118680Smarcel val = be16dec(base); 1003109313Sobrien break; 1004109313Sobrien case ELFDATA2LSB: 1005118680Smarcel val = le16dec(base); 1006109313Sobrien break; 1007109313Sobrien case ELFDATANONE: 1008109313Sobrien errx(1, "invalid data format"); 1009109313Sobrien } 1010109313Sobrien break; 1011109313Sobrien case ELFCLASS64: 1012118680Smarcel base = (char *)base + elf64_offsets[member]; 1013109313Sobrien switch (e->e_ident[EI_DATA]) { 1014109313Sobrien case ELFDATA2MSB: 1015118680Smarcel val = be16dec(base); 1016109313Sobrien break; 1017109313Sobrien case ELFDATA2LSB: 1018118680Smarcel val = le16dec(base); 1019109313Sobrien break; 1020109313Sobrien case ELFDATANONE: 1021109313Sobrien errx(1, "invalid data format"); 1022109313Sobrien } 1023109313Sobrien break; 1024109313Sobrien case ELFCLASSNONE: 1025109313Sobrien errx(1, "invalid class"); 1026109313Sobrien } 1027109313Sobrien 1028109313Sobrien return val; 1029109313Sobrien} 1030109313Sobrien 1031241737Sed#if 0 1032241737Sedstatic u_int64_t 1033109313Sobrienelf_get_half(Elf32_Ehdr *e, void *base, elf_member_t member) 1034109313Sobrien{ 1035109313Sobrien u_int64_t val; 1036109313Sobrien 1037109313Sobrien val = 0; 1038109313Sobrien switch (e->e_ident[EI_CLASS]) { 1039109313Sobrien case ELFCLASS32: 1040118680Smarcel base = (char *)base + elf32_offsets[member]; 1041109313Sobrien switch (e->e_ident[EI_DATA]) { 1042109313Sobrien case ELFDATA2MSB: 1043118680Smarcel val = be16dec(base); 1044109313Sobrien break; 1045109313Sobrien case ELFDATA2LSB: 1046118680Smarcel val = le16dec(base); 1047109313Sobrien break; 1048109313Sobrien case ELFDATANONE: 1049109313Sobrien errx(1, "invalid data format"); 1050109313Sobrien } 1051109313Sobrien break; 1052109313Sobrien case ELFCLASS64: 1053118680Smarcel base = (char *)base + elf64_offsets[member]; 1054109313Sobrien switch (e->e_ident[EI_DATA]) { 1055109313Sobrien case ELFDATA2MSB: 1056118680Smarcel val = be32dec(base); 1057109313Sobrien break; 1058109313Sobrien case ELFDATA2LSB: 1059118680Smarcel val = le32dec(base); 1060109313Sobrien break; 1061109313Sobrien case ELFDATANONE: 1062109313Sobrien errx(1, "invalid data format"); 1063109313Sobrien } 1064109313Sobrien break; 1065109313Sobrien case ELFCLASSNONE: 1066109313Sobrien errx(1, "invalid class"); 1067109313Sobrien } 1068109313Sobrien 1069109313Sobrien return val; 1070109313Sobrien} 1071241737Sed#endif 1072109313Sobrien 1073241737Sedstatic u_int64_t 1074109313Sobrienelf_get_word(Elf32_Ehdr *e, void *base, elf_member_t member) 1075109313Sobrien{ 1076109313Sobrien u_int64_t val; 1077109313Sobrien 1078109313Sobrien val = 0; 1079109313Sobrien switch (e->e_ident[EI_CLASS]) { 1080109313Sobrien case ELFCLASS32: 1081118680Smarcel base = (char *)base + elf32_offsets[member]; 1082109313Sobrien switch (e->e_ident[EI_DATA]) { 1083109313Sobrien case ELFDATA2MSB: 1084118680Smarcel val = be32dec(base); 1085109313Sobrien break; 1086109313Sobrien case ELFDATA2LSB: 1087118680Smarcel val = le32dec(base); 1088109313Sobrien break; 1089109313Sobrien case ELFDATANONE: 1090109313Sobrien errx(1, "invalid data format"); 1091109313Sobrien } 1092109313Sobrien break; 1093109313Sobrien case ELFCLASS64: 1094118680Smarcel base = (char *)base + elf64_offsets[member]; 1095109313Sobrien switch (e->e_ident[EI_DATA]) { 1096109313Sobrien case ELFDATA2MSB: 1097118680Smarcel val = be32dec(base); 1098109313Sobrien break; 1099109313Sobrien case ELFDATA2LSB: 1100118680Smarcel val = le32dec(base); 1101109313Sobrien break; 1102109313Sobrien case ELFDATANONE: 1103109313Sobrien errx(1, "invalid data format"); 1104109313Sobrien } 1105109313Sobrien break; 1106109313Sobrien case ELFCLASSNONE: 1107109313Sobrien errx(1, "invalid class"); 1108109313Sobrien } 1109109313Sobrien 1110109313Sobrien return val; 1111109313Sobrien} 1112109313Sobrien 1113241737Sedstatic u_int64_t 1114109313Sobrienelf_get_quad(Elf32_Ehdr *e, void *base, elf_member_t member) 1115109313Sobrien{ 1116109313Sobrien u_int64_t val; 1117109313Sobrien 1118109313Sobrien val = 0; 1119109313Sobrien switch (e->e_ident[EI_CLASS]) { 1120109313Sobrien case ELFCLASS32: 1121118680Smarcel base = (char *)base + elf32_offsets[member]; 1122109313Sobrien switch (e->e_ident[EI_DATA]) { 1123109313Sobrien case ELFDATA2MSB: 1124118680Smarcel val = be32dec(base); 1125109313Sobrien break; 1126109313Sobrien case ELFDATA2LSB: 1127118680Smarcel val = le32dec(base); 1128109313Sobrien break; 1129109313Sobrien case ELFDATANONE: 1130109313Sobrien errx(1, "invalid data format"); 1131109313Sobrien } 1132109313Sobrien break; 1133109313Sobrien case ELFCLASS64: 1134118680Smarcel base = (char *)base + elf64_offsets[member]; 1135109313Sobrien switch (e->e_ident[EI_DATA]) { 1136109313Sobrien case ELFDATA2MSB: 1137118680Smarcel val = be64dec(base); 1138109313Sobrien break; 1139109313Sobrien case ELFDATA2LSB: 1140118680Smarcel val = le64dec(base); 1141109313Sobrien break; 1142109313Sobrien case ELFDATANONE: 1143109313Sobrien errx(1, "invalid data format"); 1144109313Sobrien } 1145109313Sobrien break; 1146109313Sobrien case ELFCLASSNONE: 1147109313Sobrien errx(1, "invalid class"); 1148109313Sobrien } 1149109313Sobrien 1150109313Sobrien return val; 1151109313Sobrien} 1152109313Sobrien 1153241737Sedstatic void 1154109313Sobrienusage(void) 1155109313Sobrien{ 1156117009Sru fprintf(stderr, "usage: elfdump -a | -cdeGhinprs [-w file] file\n"); 1157109313Sobrien exit(1); 1158109313Sobrien} 1159