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("$FreeBSD$"); 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 * 170270969Semasted_tags(u_int64_t tag) 171270969Semaste{ 172270969Semaste static char unknown_tag[48]; 173270969Semaste 174109332Sobrien switch (tag) { 175270969Semaste case DT_NULL: return "DT_NULL"; 176270969Semaste case DT_NEEDED: return "DT_NEEDED"; 177270969Semaste case DT_PLTRELSZ: return "DT_PLTRELSZ"; 178270969Semaste case DT_PLTGOT: return "DT_PLTGOT"; 179270969Semaste case DT_HASH: return "DT_HASH"; 180270969Semaste case DT_STRTAB: return "DT_STRTAB"; 181270969Semaste case DT_SYMTAB: return "DT_SYMTAB"; 182270969Semaste case DT_RELA: return "DT_RELA"; 183270969Semaste case DT_RELASZ: return "DT_RELASZ"; 184270969Semaste case DT_RELAENT: return "DT_RELAENT"; 185270969Semaste case DT_STRSZ: return "DT_STRSZ"; 186270969Semaste case DT_SYMENT: return "DT_SYMENT"; 187270969Semaste case DT_INIT: return "DT_INIT"; 188270969Semaste case DT_FINI: return "DT_FINI"; 189270969Semaste case DT_SONAME: return "DT_SONAME"; 190270969Semaste case DT_RPATH: return "DT_RPATH"; 191270969Semaste case DT_SYMBOLIC: return "DT_SYMBOLIC"; 192270969Semaste case DT_REL: return "DT_REL"; 193270969Semaste case DT_RELSZ: return "DT_RELSZ"; 194270969Semaste case DT_RELENT: return "DT_RELENT"; 195270969Semaste case DT_PLTREL: return "DT_PLTREL"; 196270969Semaste case DT_DEBUG: return "DT_DEBUG"; 197270969Semaste case DT_TEXTREL: return "DT_TEXTREL"; 198270969Semaste case DT_JMPREL: return "DT_JMPREL"; 199270969Semaste case DT_BIND_NOW: return "DT_BIND_NOW"; 200270969Semaste case DT_INIT_ARRAY: return "DT_INIT_ARRAY"; 201270969Semaste case DT_FINI_ARRAY: return "DT_FINI_ARRAY"; 202270969Semaste case DT_INIT_ARRAYSZ: return "DT_INIT_ARRAYSZ"; 203270969Semaste case DT_FINI_ARRAYSZ: return "DT_FINI_ARRAYSZ"; 204270969Semaste case DT_RUNPATH: return "DT_RUNPATH"; 205270969Semaste case DT_FLAGS: return "DT_FLAGS"; 206270969Semaste case DT_PREINIT_ARRAY: return "DT_PREINIT_ARRAY"; /* XXX DT_ENCODING */ 207270969Semaste case DT_PREINIT_ARRAYSZ:return "DT_PREINIT_ARRAYSZ"; 208109332Sobrien /* 0x6000000D - 0x6ffff000 operating system-specific semantics */ 209270969Semaste case 0x6ffffdf5: return "DT_GNU_PRELINKED"; 210270969Semaste case 0x6ffffdf6: return "DT_GNU_CONFLICTSZ"; 211270969Semaste case 0x6ffffdf7: return "DT_GNU_LIBLISTSZ"; 212270969Semaste case 0x6ffffdf8: return "DT_SUNW_CHECKSUM"; 213270969Semaste case DT_PLTPADSZ: return "DT_PLTPADSZ"; 214270969Semaste case DT_MOVEENT: return "DT_MOVEENT"; 215270969Semaste case DT_MOVESZ: return "DT_MOVESZ"; 216270969Semaste case DT_FEATURE: return "DT_FEATURE"; 217270969Semaste case DT_POSFLAG_1: return "DT_POSFLAG_1"; 218270969Semaste case DT_SYMINSZ: return "DT_SYMINSZ"; 219270969Semaste case DT_SYMINENT : return "DT_SYMINENT (DT_VALRNGHI)"; 220270969Semaste case DT_ADDRRNGLO: return "DT_ADDRRNGLO"; 221270969Semaste case DT_GNU_HASH: return "DT_GNU_HASH"; 222270969Semaste case 0x6ffffef8: return "DT_GNU_CONFLICT"; 223270969Semaste case 0x6ffffef9: return "DT_GNU_LIBLIST"; 224270969Semaste case DT_CONFIG: return "DT_CONFIG"; 225270969Semaste case DT_DEPAUDIT: return "DT_DEPAUDIT"; 226270969Semaste case DT_AUDIT: return "DT_AUDIT"; 227270969Semaste case DT_PLTPAD: return "DT_PLTPAD"; 228270969Semaste case DT_MOVETAB: return "DT_MOVETAB"; 229270969Semaste case DT_SYMINFO : return "DT_SYMINFO (DT_ADDRRNGHI)"; 230270969Semaste case DT_RELACOUNT: return "DT_RELACOUNT"; 231270969Semaste case DT_RELCOUNT: return "DT_RELCOUNT"; 232270969Semaste case DT_FLAGS_1: return "DT_FLAGS_1"; 233270969Semaste case DT_VERDEF: return "DT_VERDEF"; 234270969Semaste case DT_VERDEFNUM: return "DT_VERDEFNUM"; 235270969Semaste case DT_VERNEED: return "DT_VERNEED"; 236270969Semaste case DT_VERNEEDNUM: return "DT_VERNEEDNUM"; 237270969Semaste case 0x6ffffff0: return "DT_GNU_VERSYM"; 238109332Sobrien /* 0x70000000 - 0x7fffffff processor-specific semantics */ 239270969Semaste case 0x70000000: return "DT_IA_64_PLT_RESERVE"; 240270969Semaste case 0x7ffffffd: return "DT_SUNW_AUXILIARY"; 241270969Semaste case 0x7ffffffe: return "DT_SUNW_USED"; 242270969Semaste case 0x7fffffff: return "DT_SUNW_FILTER"; 243109332Sobrien } 244270969Semaste snprintf(unknown_tag, sizeof(unknown_tag), 245270969Semaste "ERROR: TAG NOT DEFINED -- tag 0x%jx", (uintmax_t)tag); 246270969Semaste return (unknown_tag); 247119794Sschweikh} 248109313Sobrien 249110256Sobrienstatic const char * 250109457Smarcele_machines(u_int mach) 251109457Smarcel{ 252153500Smarcel static char machdesc[64]; 253153500Smarcel 254109457Smarcel switch (mach) { 255109457Smarcel case EM_NONE: return "EM_NONE"; 256109457Smarcel case EM_M32: return "EM_M32"; 257109457Smarcel case EM_SPARC: return "EM_SPARC"; 258109457Smarcel case EM_386: return "EM_386"; 259109457Smarcel case EM_68K: return "EM_68K"; 260109457Smarcel case EM_88K: return "EM_88K"; 261109457Smarcel case EM_860: return "EM_860"; 262109457Smarcel case EM_MIPS: return "EM_MIPS"; 263153500Smarcel case EM_PPC: return "EM_PPC"; 264261002Sjhibbits case EM_PPC64: return "EM_PPC64"; 265153500Smarcel case EM_ARM: return "EM_ARM"; 266153500Smarcel case EM_ALPHA: return "EM_ALPHA (legacy)"; 267153500Smarcel case EM_SPARCV9:return "EM_SPARCV9"; 268109457Smarcel case EM_IA_64: return "EM_IA_64"; 269153500Smarcel case EM_X86_64: return "EM_X86_64"; 270270969Semaste case EM_AARCH64:return "EM_AARCH64"; 271109457Smarcel } 272153500Smarcel snprintf(machdesc, sizeof(machdesc), 273153500Smarcel "(unknown machine) -- type 0x%x", mach); 274153500Smarcel return (machdesc); 275119794Sschweikh} 276109313Sobrien 277241737Sedstatic const char *e_types[] = { 278109313Sobrien "ET_NONE", "ET_REL", "ET_EXEC", "ET_DYN", "ET_CORE" 279109313Sobrien}; 280109313Sobrien 281241737Sedstatic const char *ei_versions[] = { 282109313Sobrien "EV_NONE", "EV_CURRENT" 283109313Sobrien}; 284109313Sobrien 285241737Sedstatic const char *ei_classes[] = { 286109313Sobrien "ELFCLASSNONE", "ELFCLASS32", "ELFCLASS64" 287109313Sobrien}; 288109313Sobrien 289241737Sedstatic const char *ei_data[] = { 290109313Sobrien "ELFDATANONE", "ELFDATA2LSB", "ELFDATA2MSB" 291109313Sobrien}; 292109313Sobrien 293241737Sedstatic const char *ei_abis[256] = { 294109313Sobrien "ELFOSABI_SYSV", "ELFOSABI_HPUX", "ELFOSABI_NETBSD", "ELFOSABI_LINUX", 295226434Smarcel "ELFOSABI_HURD", "ELFOSABI_86OPEN", "ELFOSABI_SOLARIS", "ELFOSABI_AIX", 296226434Smarcel "ELFOSABI_IRIX", "ELFOSABI_FREEBSD", "ELFOSABI_TRU64", 297226434Smarcel "ELFOSABI_MODESTO", "ELFOSABI_OPENBSD", 298226434Smarcel [255] = "ELFOSABI_STANDALONE" 299109313Sobrien}; 300109313Sobrien 301241737Sedstatic const char *p_types[] = { 302109313Sobrien "PT_NULL", "PT_LOAD", "PT_DYNAMIC", "PT_INTERP", "PT_NOTE", 303126484Sjake "PT_SHLIB", "PT_PHDR", "PT_TLS" 304109313Sobrien}; 305109313Sobrien 306241737Sedstatic const char *p_flags[] = { 307109313Sobrien "", "PF_X", "PF_W", "PF_X|PF_W", "PF_R", "PF_X|PF_R", "PF_W|PF_R", 308109313Sobrien "PF_X|PF_W|PF_R" 309109313Sobrien}; 310109313Sobrien 311109329Sobrien/* http://www.sco.com/developers/gabi/latest/ch4.sheader.html#sh_type */ 312110256Sobrienstatic const char * 313270969Semastesh_types(uint64_t machine, uint64_t sht) { 314270969Semaste static char unknown_buf[64]; 315270969Semaste 316270969Semaste if (sht < 0x60000000) { 317270969Semaste switch (sht) { 318270969Semaste case SHT_NULL: return "SHT_NULL"; 319270969Semaste case SHT_PROGBITS: return "SHT_PROGBITS"; 320270969Semaste case SHT_SYMTAB: return "SHT_SYMTAB"; 321270969Semaste case SHT_STRTAB: return "SHT_STRTAB"; 322270969Semaste case SHT_RELA: return "SHT_RELA"; 323270969Semaste case SHT_HASH: return "SHT_HASH"; 324270969Semaste case SHT_DYNAMIC: return "SHT_DYNAMIC"; 325270969Semaste case SHT_NOTE: return "SHT_NOTE"; 326270969Semaste case SHT_NOBITS: return "SHT_NOBITS"; 327270969Semaste case SHT_REL: return "SHT_REL"; 328270969Semaste case SHT_SHLIB: return "SHT_SHLIB"; 329270969Semaste case SHT_DYNSYM: return "SHT_DYNSYM"; 330270969Semaste case SHT_INIT_ARRAY: return "SHT_INIT_ARRAY"; 331270969Semaste case SHT_FINI_ARRAY: return "SHT_FINI_ARRAY"; 332270969Semaste case SHT_PREINIT_ARRAY: return "SHT_PREINIT_ARRAY"; 333270969Semaste case SHT_GROUP: return "SHT_GROUP"; 334270969Semaste case SHT_SYMTAB_SHNDX: return "SHT_SYMTAB_SHNDX"; 335270969Semaste } 336270969Semaste snprintf(unknown_buf, sizeof(unknown_buf), 337270969Semaste "ERROR: SHT %ju NOT DEFINED", (uintmax_t)sht); 338270969Semaste return (unknown_buf); 339270969Semaste } else if (sht < 0x70000000) { 340270969Semaste /* 0x60000000-0x6fffffff operating system-specific semantics */ 341270969Semaste switch (sht) { 342270969Semaste case 0x6ffffff0: return "XXX:VERSYM"; 343270969Semaste case SHT_SUNW_dof: return "SHT_SUNW_dof"; 344270969Semaste case SHT_GNU_HASH: return "SHT_GNU_HASH"; 345270969Semaste case 0x6ffffff7: return "SHT_GNU_LIBLIST"; 346270969Semaste case 0x6ffffffc: return "XXX:VERDEF"; 347270969Semaste case SHT_SUNW_verdef: return "SHT_SUNW(GNU)_verdef"; 348270969Semaste case SHT_SUNW_verneed: return "SHT_SUNW(GNU)_verneed"; 349270969Semaste case SHT_SUNW_versym: return "SHT_SUNW(GNU)_versym"; 350270969Semaste } 351270969Semaste snprintf(unknown_buf, sizeof(unknown_buf), 352270969Semaste "ERROR: OS-SPECIFIC SHT 0x%jx NOT DEFINED", 353270969Semaste (uintmax_t)sht); 354270969Semaste return (unknown_buf); 355270969Semaste } else if (sht < 0x80000000) { 356270969Semaste /* 0x70000000-0x7fffffff processor-specific semantics */ 357270969Semaste switch (machine) { 358270969Semaste case EM_ARM: 359270969Semaste switch (sht) { 360270969Semaste case SHT_ARM_EXIDX: return "SHT_ARM_EXIDX"; 361270969Semaste case SHT_ARM_PREEMPTMAP:return "SHT_ARM_PREEMPTMAP"; 362270969Semaste case SHT_ARM_ATTRIBUTES:return "SHT_ARM_ATTRIBUTES"; 363270969Semaste case SHT_ARM_DEBUGOVERLAY: 364270969Semaste return "SHT_ARM_DEBUGOVERLAY"; 365270969Semaste case SHT_ARM_OVERLAYSECTION: 366270969Semaste return "SHT_ARM_OVERLAYSECTION"; 367270969Semaste } 368270969Semaste break; 369270969Semaste case EM_IA_64: 370270969Semaste switch (sht) { 371270969Semaste case 0x70000000: return "SHT_IA_64_EXT"; 372270969Semaste case 0x70000001: return "SHT_IA_64_UNWIND"; 373270969Semaste } 374270969Semaste break; 375270969Semaste case EM_MIPS: 376270969Semaste switch (sht) { 377270969Semaste case SHT_MIPS_OPTIONS: return "SHT_MIPS_OPTIONS"; 378270969Semaste } 379270969Semaste break; 380270969Semaste } 381270969Semaste switch (sht) { 382270969Semaste case 0x7ffffffd: return "XXX:AUXILIARY"; 383270969Semaste case 0x7fffffff: return "XXX:FILTER"; 384270969Semaste } 385270969Semaste snprintf(unknown_buf, sizeof(unknown_buf), 386270969Semaste "ERROR: PROCESSOR-SPECIFIC SHT 0x%jx NOT DEFINED", 387270969Semaste (uintmax_t)sht); 388270969Semaste return (unknown_buf); 389270969Semaste } else { 390270969Semaste /* 0x80000000-0xffffffff application programs */ 391270969Semaste snprintf(unknown_buf, sizeof(unknown_buf), 392270969Semaste "ERROR: SHT 0x%jx NOT DEFINED", 393270969Semaste (uintmax_t)sht); 394270969Semaste return (unknown_buf); 395109329Sobrien } 396119795Sschweikh} 397109313Sobrien 398241737Sedstatic const char *sh_flags[] = { 399109313Sobrien "", "SHF_WRITE", "SHF_ALLOC", "SHF_WRITE|SHF_ALLOC", "SHF_EXECINSTR", 400109313Sobrien "SHF_WRITE|SHF_EXECINSTR", "SHF_ALLOC|SHF_EXECINSTR", 401109313Sobrien "SHF_WRITE|SHF_ALLOC|SHF_EXECINSTR" 402109313Sobrien}; 403109313Sobrien 404241737Sedstatic const char *st_types[] = { 405109313Sobrien "STT_NOTYPE", "STT_OBJECT", "STT_FUNC", "STT_SECTION", "STT_FILE" 406109313Sobrien}; 407109313Sobrien 408241737Sedstatic const char *st_bindings[] = { 409109313Sobrien "STB_LOCAL", "STB_GLOBAL", "STB_WEAK" 410109313Sobrien}; 411109313Sobrien 412241737Sedstatic char *dynstr; 413241737Sedstatic char *shstrtab; 414241737Sedstatic char *strtab; 415241737Sedstatic FILE *out; 416109313Sobrien 417241737Sedstatic u_int64_t elf_get_byte(Elf32_Ehdr *e, void *base, elf_member_t member); 418241737Sedstatic u_int64_t elf_get_quarter(Elf32_Ehdr *e, void *base, 419241737Sed elf_member_t member); 420241737Sed#if 0 421241737Sedstatic u_int64_t elf_get_half(Elf32_Ehdr *e, void *base, elf_member_t member); 422241737Sed#endif 423241737Sedstatic u_int64_t elf_get_word(Elf32_Ehdr *e, void *base, elf_member_t member); 424241737Sedstatic u_int64_t elf_get_quad(Elf32_Ehdr *e, void *base, elf_member_t member); 425109313Sobrien 426267958Semastestatic void elf_print_ehdr(Elf32_Ehdr *e, void *sh); 427241737Sedstatic void elf_print_phdr(Elf32_Ehdr *e, void *p); 428241737Sedstatic void elf_print_shdr(Elf32_Ehdr *e, void *sh); 429241737Sedstatic void elf_print_symtab(Elf32_Ehdr *e, void *sh, char *str); 430241737Sedstatic void elf_print_dynamic(Elf32_Ehdr *e, void *sh); 431241737Sedstatic void elf_print_rel(Elf32_Ehdr *e, void *r); 432241737Sedstatic void elf_print_rela(Elf32_Ehdr *e, void *ra); 433241737Sedstatic void elf_print_interp(Elf32_Ehdr *e, void *p); 434241737Sedstatic void elf_print_got(Elf32_Ehdr *e, void *sh); 435241737Sedstatic void elf_print_hash(Elf32_Ehdr *e, void *sh); 436241737Sedstatic void elf_print_note(Elf32_Ehdr *e, void *sh); 437109313Sobrien 438241737Sedstatic void usage(void); 439109313Sobrien 440267958Semaste/* 441267958Semaste * Helpers for ELF files with shnum or shstrndx values that don't fit in the 442267958Semaste * ELF header. If the values are too large then an escape value is used to 443267958Semaste * indicate that the actual value is found in one of section 0's fields. 444267958Semaste */ 445267958Semastestatic uint64_t 446267958Semasteelf_get_shnum(Elf32_Ehdr *e, void *sh) 447267958Semaste{ 448267958Semaste uint64_t shnum; 449267958Semaste 450267958Semaste shnum = elf_get_quarter(e, e, E_SHNUM); 451267958Semaste if (shnum == 0) 452267958Semaste shnum = elf_get_word(e, (char *)sh, SH_SIZE); 453267958Semaste return shnum; 454267958Semaste} 455267958Semaste 456267958Semastestatic uint64_t 457267958Semasteelf_get_shstrndx(Elf32_Ehdr *e, void *sh) 458267958Semaste{ 459267958Semaste uint64_t shstrndx; 460267958Semaste 461267958Semaste shstrndx = elf_get_quarter(e, e, E_SHSTRNDX); 462267958Semaste if (shstrndx == SHN_XINDEX) 463267958Semaste shstrndx = elf_get_word(e, (char *)sh, SH_LINK); 464267958Semaste return shstrndx; 465267958Semaste} 466267958Semaste 467109313Sobrienint 468109313Sobrienmain(int ac, char **av) 469109313Sobrien{ 470109313Sobrien u_int64_t phoff; 471109313Sobrien u_int64_t shoff; 472109313Sobrien u_int64_t phentsize; 473109313Sobrien u_int64_t phnum; 474109313Sobrien u_int64_t shentsize; 475109313Sobrien u_int64_t shnum; 476109313Sobrien u_int64_t shstrndx; 477109313Sobrien u_int64_t offset; 478109313Sobrien u_int64_t name; 479109313Sobrien u_int64_t type; 480109313Sobrien struct stat sb; 481109313Sobrien u_int flags; 482110252Sobrien Elf32_Ehdr *e; 483109313Sobrien void *p; 484109313Sobrien void *sh; 485109313Sobrien void *v; 486109313Sobrien int fd; 487109313Sobrien int ch; 488109313Sobrien int i; 489109313Sobrien 490109313Sobrien out = stdout; 491109313Sobrien flags = 0; 492109313Sobrien while ((ch = getopt(ac, av, "acdeiGhnprsw:")) != -1) 493109313Sobrien switch (ch) { 494109313Sobrien case 'a': 495109313Sobrien flags = ED_ALL; 496109313Sobrien break; 497109313Sobrien case 'c': 498109313Sobrien flags |= ED_SHDR; 499109313Sobrien break; 500109313Sobrien case 'd': 501109313Sobrien flags |= ED_DYN; 502109313Sobrien break; 503109313Sobrien case 'e': 504109313Sobrien flags |= ED_EHDR; 505109313Sobrien break; 506109313Sobrien case 'i': 507109313Sobrien flags |= ED_INTERP; 508109313Sobrien break; 509109313Sobrien case 'G': 510109313Sobrien flags |= ED_GOT; 511109313Sobrien break; 512109313Sobrien case 'h': 513109313Sobrien flags |= ED_HASH; 514109313Sobrien break; 515109313Sobrien case 'n': 516109313Sobrien flags |= ED_NOTE; 517109313Sobrien break; 518109313Sobrien case 'p': 519109313Sobrien flags |= ED_PHDR; 520109313Sobrien break; 521109313Sobrien case 'r': 522109313Sobrien flags |= ED_REL; 523109313Sobrien break; 524109313Sobrien case 's': 525109313Sobrien flags |= ED_SYMTAB; 526109313Sobrien break; 527109313Sobrien case 'w': 528109313Sobrien if ((out = fopen(optarg, "w")) == NULL) 529109313Sobrien err(1, "%s", optarg); 530109313Sobrien break; 531109313Sobrien case '?': 532109313Sobrien default: 533109313Sobrien usage(); 534109313Sobrien } 535109313Sobrien ac -= optind; 536109313Sobrien av += optind; 537109313Sobrien if (ac == 0 || flags == 0) 538109313Sobrien usage(); 539109313Sobrien if ((fd = open(*av, O_RDONLY)) < 0 || 540109313Sobrien fstat(fd, &sb) < 0) 541117009Sru err(1, "%s", *av); 542109313Sobrien e = mmap(NULL, sb.st_size, PROT_READ, MAP_SHARED, fd, 0); 543109313Sobrien if (e == MAP_FAILED) 544109313Sobrien err(1, NULL); 545109313Sobrien if (!IS_ELF(*(Elf32_Ehdr *)e)) 546109313Sobrien errx(1, "not an elf file"); 547109313Sobrien phoff = elf_get_off(e, e, E_PHOFF); 548109313Sobrien shoff = elf_get_off(e, e, E_SHOFF); 549109313Sobrien phentsize = elf_get_quarter(e, e, E_PHENTSIZE); 550109313Sobrien phnum = elf_get_quarter(e, e, E_PHNUM); 551109313Sobrien shentsize = elf_get_quarter(e, e, E_SHENTSIZE); 552110256Sobrien p = (char *)e + phoff; 553267958Semaste if (shoff > 0) { 554267958Semaste sh = (char *)e + shoff; 555267958Semaste shnum = elf_get_shnum(e, sh); 556267958Semaste shstrndx = elf_get_shstrndx(e, sh); 557267958Semaste offset = elf_get_off(e, (char *)sh + shstrndx * shentsize, 558267958Semaste SH_OFFSET); 559267958Semaste shstrtab = (char *)e + offset; 560267958Semaste } else { 561267958Semaste sh = NULL; 562267958Semaste shnum = 0; 563267958Semaste shstrndx = 0; 564267958Semaste shstrtab = NULL; 565267958Semaste } 566110256Sobrien for (i = 0; (u_int64_t)i < shnum; i++) { 567110256Sobrien name = elf_get_word(e, (char *)sh + i * shentsize, SH_NAME); 568110256Sobrien offset = elf_get_off(e, (char *)sh + i * shentsize, SH_OFFSET); 569109313Sobrien if (strcmp(shstrtab + name, ".strtab") == 0) 570110252Sobrien strtab = (char *)e + offset; 571109313Sobrien if (strcmp(shstrtab + name, ".dynstr") == 0) 572110252Sobrien dynstr = (char *)e + offset; 573109313Sobrien } 574109313Sobrien if (flags & ED_EHDR) 575267958Semaste elf_print_ehdr(e, sh); 576109313Sobrien if (flags & ED_PHDR) 577109313Sobrien elf_print_phdr(e, p); 578109313Sobrien if (flags & ED_SHDR) 579109313Sobrien elf_print_shdr(e, sh); 580110256Sobrien for (i = 0; (u_int64_t)i < phnum; i++) { 581110256Sobrien v = (char *)p + i * phentsize; 582109313Sobrien type = elf_get_word(e, v, P_TYPE); 583109313Sobrien switch (type) { 584109313Sobrien case PT_INTERP: 585109313Sobrien if (flags & ED_INTERP) 586109313Sobrien elf_print_interp(e, v); 587109313Sobrien break; 588109313Sobrien case PT_NULL: 589109313Sobrien case PT_LOAD: 590109313Sobrien case PT_DYNAMIC: 591109313Sobrien case PT_NOTE: 592109313Sobrien case PT_SHLIB: 593109313Sobrien case PT_PHDR: 594109313Sobrien break; 595109313Sobrien } 596109313Sobrien } 597110256Sobrien for (i = 0; (u_int64_t)i < shnum; i++) { 598110256Sobrien v = (char *)sh + i * shentsize; 599109313Sobrien type = elf_get_word(e, v, SH_TYPE); 600109313Sobrien switch (type) { 601109313Sobrien case SHT_SYMTAB: 602109313Sobrien if (flags & ED_SYMTAB) 603109313Sobrien elf_print_symtab(e, v, strtab); 604109313Sobrien break; 605109313Sobrien case SHT_DYNAMIC: 606109313Sobrien if (flags & ED_DYN) 607109313Sobrien elf_print_dynamic(e, v); 608109313Sobrien break; 609109313Sobrien case SHT_RELA: 610109313Sobrien if (flags & ED_REL) 611109313Sobrien elf_print_rela(e, v); 612109313Sobrien break; 613109313Sobrien case SHT_REL: 614109313Sobrien if (flags & ED_REL) 615109313Sobrien elf_print_rel(e, v); 616109313Sobrien break; 617109313Sobrien case SHT_NOTE: 618109313Sobrien name = elf_get_word(e, v, SH_NAME); 619109313Sobrien if (flags & ED_NOTE && 620109313Sobrien strcmp(shstrtab + name, ".note.ABI-tag") == 0) 621109313Sobrien elf_print_note(e, v); 622109313Sobrien break; 623109313Sobrien case SHT_DYNSYM: 624109313Sobrien if (flags & ED_SYMTAB) 625109313Sobrien elf_print_symtab(e, v, dynstr); 626109313Sobrien break; 627109313Sobrien case SHT_PROGBITS: 628109313Sobrien name = elf_get_word(e, v, SH_NAME); 629109313Sobrien if (flags & ED_GOT && 630109313Sobrien strcmp(shstrtab + name, ".got") == 0) 631109313Sobrien elf_print_got(e, v); 632109313Sobrien break; 633109313Sobrien case SHT_HASH: 634109313Sobrien if (flags & ED_HASH) 635109313Sobrien elf_print_hash(e, v); 636109313Sobrien break; 637109313Sobrien case SHT_NULL: 638109313Sobrien case SHT_STRTAB: 639109313Sobrien case SHT_NOBITS: 640109313Sobrien case SHT_SHLIB: 641109313Sobrien break; 642109313Sobrien } 643109313Sobrien } 644109313Sobrien 645109313Sobrien return 0; 646109313Sobrien} 647109313Sobrien 648241737Sedstatic void 649267958Semasteelf_print_ehdr(Elf32_Ehdr *e, void *sh) 650109313Sobrien{ 651109313Sobrien u_int64_t class; 652109313Sobrien u_int64_t data; 653109313Sobrien u_int64_t osabi; 654109313Sobrien u_int64_t type; 655109313Sobrien u_int64_t machine; 656109313Sobrien u_int64_t version; 657109313Sobrien u_int64_t entry; 658109313Sobrien u_int64_t phoff; 659109313Sobrien u_int64_t shoff; 660109313Sobrien u_int64_t flags; 661109313Sobrien u_int64_t ehsize; 662109313Sobrien u_int64_t phentsize; 663109313Sobrien u_int64_t phnum; 664109313Sobrien u_int64_t shentsize; 665109313Sobrien u_int64_t shnum; 666109313Sobrien u_int64_t shstrndx; 667109313Sobrien 668109313Sobrien class = elf_get_byte(e, e, E_CLASS); 669109313Sobrien data = elf_get_byte(e, e, E_DATA); 670109313Sobrien osabi = elf_get_byte(e, e, E_OSABI); 671109313Sobrien type = elf_get_quarter(e, e, E_TYPE); 672109313Sobrien machine = elf_get_quarter(e, e, E_MACHINE); 673109313Sobrien version = elf_get_word(e, e, E_VERSION); 674109313Sobrien entry = elf_get_addr(e, e, E_ENTRY); 675109313Sobrien phoff = elf_get_off(e, e, E_PHOFF); 676109313Sobrien shoff = elf_get_off(e, e, E_SHOFF); 677109313Sobrien flags = elf_get_word(e, e, E_FLAGS); 678109313Sobrien ehsize = elf_get_quarter(e, e, E_EHSIZE); 679109313Sobrien phentsize = elf_get_quarter(e, e, E_PHENTSIZE); 680109313Sobrien phnum = elf_get_quarter(e, e, E_PHNUM); 681109313Sobrien shentsize = elf_get_quarter(e, e, E_SHENTSIZE); 682109313Sobrien fprintf(out, "\nelf header:\n"); 683109313Sobrien fprintf(out, "\n"); 684109313Sobrien fprintf(out, "\te_ident: %s %s %s\n", ei_classes[class], ei_data[data], 685109313Sobrien ei_abis[osabi]); 686109313Sobrien fprintf(out, "\te_type: %s\n", e_types[type]); 687109457Smarcel fprintf(out, "\te_machine: %s\n", e_machines(machine)); 688109313Sobrien fprintf(out, "\te_version: %s\n", ei_versions[version]); 689110257Sobrien fprintf(out, "\te_entry: %#jx\n", (intmax_t)entry); 690110257Sobrien fprintf(out, "\te_phoff: %jd\n", (intmax_t)phoff); 691110257Sobrien fprintf(out, "\te_shoff: %jd\n", (intmax_t)shoff); 692110257Sobrien fprintf(out, "\te_flags: %jd\n", (intmax_t)flags); 693110257Sobrien fprintf(out, "\te_ehsize: %jd\n", (intmax_t)ehsize); 694110257Sobrien fprintf(out, "\te_phentsize: %jd\n", (intmax_t)phentsize); 695110257Sobrien fprintf(out, "\te_phnum: %jd\n", (intmax_t)phnum); 696110257Sobrien fprintf(out, "\te_shentsize: %jd\n", (intmax_t)shentsize); 697267958Semaste if (sh != NULL) { 698267958Semaste shnum = elf_get_shnum(e, sh); 699267958Semaste shstrndx = elf_get_shstrndx(e, sh); 700267958Semaste fprintf(out, "\te_shnum: %jd\n", (intmax_t)shnum); 701267958Semaste fprintf(out, "\te_shstrndx: %jd\n", (intmax_t)shstrndx); 702267958Semaste } 703109313Sobrien} 704109313Sobrien 705241737Sedstatic void 706110252Sobrienelf_print_phdr(Elf32_Ehdr *e, void *p) 707109313Sobrien{ 708109313Sobrien u_int64_t phentsize; 709109313Sobrien u_int64_t phnum; 710109313Sobrien u_int64_t type; 711109313Sobrien u_int64_t offset; 712109313Sobrien u_int64_t vaddr; 713109313Sobrien u_int64_t paddr; 714109313Sobrien u_int64_t filesz; 715109313Sobrien u_int64_t memsz; 716109313Sobrien u_int64_t flags; 717109313Sobrien u_int64_t align; 718109313Sobrien void *v; 719109313Sobrien int i; 720109313Sobrien 721109313Sobrien phentsize = elf_get_quarter(e, e, E_PHENTSIZE); 722109313Sobrien phnum = elf_get_quarter(e, e, E_PHNUM); 723109313Sobrien fprintf(out, "\nprogram header:\n"); 724110256Sobrien for (i = 0; (u_int64_t)i < phnum; i++) { 725110256Sobrien v = (char *)p + i * phentsize; 726109313Sobrien type = elf_get_word(e, v, P_TYPE); 727109313Sobrien offset = elf_get_off(e, v, P_OFFSET); 728109313Sobrien vaddr = elf_get_addr(e, v, P_VADDR); 729109313Sobrien paddr = elf_get_addr(e, v, P_PADDR); 730109313Sobrien filesz = elf_get_size(e, v, P_FILESZ); 731109313Sobrien memsz = elf_get_size(e, v, P_MEMSZ); 732109313Sobrien flags = elf_get_word(e, v, P_FLAGS); 733109313Sobrien align = elf_get_size(e, v, P_ALIGN); 734109313Sobrien fprintf(out, "\n"); 735109313Sobrien fprintf(out, "entry: %d\n", i); 736109313Sobrien fprintf(out, "\tp_type: %s\n", p_types[type & 0x7]); 737110257Sobrien fprintf(out, "\tp_offset: %jd\n", (intmax_t)offset); 738110257Sobrien fprintf(out, "\tp_vaddr: %#jx\n", (intmax_t)vaddr); 739110257Sobrien fprintf(out, "\tp_paddr: %#jx\n", (intmax_t)paddr); 740110257Sobrien fprintf(out, "\tp_filesz: %jd\n", (intmax_t)filesz); 741110257Sobrien fprintf(out, "\tp_memsz: %jd\n", (intmax_t)memsz); 742109313Sobrien fprintf(out, "\tp_flags: %s\n", p_flags[flags]); 743110257Sobrien fprintf(out, "\tp_align: %jd\n", (intmax_t)align); 744109313Sobrien } 745109313Sobrien} 746109313Sobrien 747241737Sedstatic void 748110252Sobrienelf_print_shdr(Elf32_Ehdr *e, void *sh) 749109313Sobrien{ 750109313Sobrien u_int64_t shentsize; 751109313Sobrien u_int64_t shnum; 752109313Sobrien u_int64_t name; 753109313Sobrien u_int64_t type; 754109313Sobrien u_int64_t flags; 755109313Sobrien u_int64_t addr; 756109313Sobrien u_int64_t offset; 757109313Sobrien u_int64_t size; 758110256Sobrien u_int64_t shlink; 759109313Sobrien u_int64_t info; 760109313Sobrien u_int64_t addralign; 761109313Sobrien u_int64_t entsize; 762270969Semaste u_int64_t machine; 763109313Sobrien void *v; 764109313Sobrien int i; 765109313Sobrien 766267958Semaste if (sh == NULL) { 767267958Semaste fprintf(out, "\nNo section headers\n"); 768267958Semaste return; 769267958Semaste } 770267958Semaste 771270969Semaste machine = elf_get_quarter(e, e, E_MACHINE); 772109313Sobrien shentsize = elf_get_quarter(e, e, E_SHENTSIZE); 773267958Semaste shnum = elf_get_shnum(e, sh); 774109313Sobrien fprintf(out, "\nsection header:\n"); 775110256Sobrien for (i = 0; (u_int64_t)i < shnum; i++) { 776110256Sobrien v = (char *)sh + i * shentsize; 777109313Sobrien name = elf_get_word(e, v, SH_NAME); 778109313Sobrien type = elf_get_word(e, v, SH_TYPE); 779109313Sobrien flags = elf_get_word(e, v, SH_FLAGS); 780109313Sobrien addr = elf_get_addr(e, v, SH_ADDR); 781109313Sobrien offset = elf_get_off(e, v, SH_OFFSET); 782109313Sobrien size = elf_get_size(e, v, SH_SIZE); 783110256Sobrien shlink = elf_get_word(e, v, SH_LINK); 784109313Sobrien info = elf_get_word(e, v, SH_INFO); 785109313Sobrien addralign = elf_get_size(e, v, SH_ADDRALIGN); 786109313Sobrien entsize = elf_get_size(e, v, SH_ENTSIZE); 787109313Sobrien fprintf(out, "\n"); 788109313Sobrien fprintf(out, "entry: %d\n", i); 789109313Sobrien fprintf(out, "\tsh_name: %s\n", shstrtab + name); 790270969Semaste fprintf(out, "\tsh_type: %s\n", sh_types(machine, type)); 791109313Sobrien fprintf(out, "\tsh_flags: %s\n", sh_flags[flags & 0x7]); 792110257Sobrien fprintf(out, "\tsh_addr: %#jx\n", addr); 793110257Sobrien fprintf(out, "\tsh_offset: %jd\n", (intmax_t)offset); 794110257Sobrien fprintf(out, "\tsh_size: %jd\n", (intmax_t)size); 795110257Sobrien fprintf(out, "\tsh_link: %jd\n", (intmax_t)shlink); 796110257Sobrien fprintf(out, "\tsh_info: %jd\n", (intmax_t)info); 797110257Sobrien fprintf(out, "\tsh_addralign: %jd\n", (intmax_t)addralign); 798110257Sobrien fprintf(out, "\tsh_entsize: %jd\n", (intmax_t)entsize); 799109313Sobrien } 800109313Sobrien} 801109313Sobrien 802241737Sedstatic void 803110252Sobrienelf_print_symtab(Elf32_Ehdr *e, void *sh, char *str) 804109313Sobrien{ 805109313Sobrien u_int64_t offset; 806109313Sobrien u_int64_t entsize; 807109313Sobrien u_int64_t size; 808109313Sobrien u_int64_t name; 809109313Sobrien u_int64_t value; 810109313Sobrien u_int64_t info; 811109313Sobrien u_int64_t shndx; 812109313Sobrien void *st; 813109313Sobrien int len; 814109313Sobrien int i; 815109313Sobrien 816109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 817109313Sobrien entsize = elf_get_size(e, sh, SH_ENTSIZE); 818109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 819109313Sobrien name = elf_get_word(e, sh, SH_NAME); 820109313Sobrien len = size / entsize; 821109313Sobrien fprintf(out, "\nsymbol table (%s):\n", shstrtab + name); 822109313Sobrien for (i = 0; i < len; i++) { 823110256Sobrien st = (char *)e + offset + i * entsize; 824109313Sobrien name = elf_get_word(e, st, ST_NAME); 825109313Sobrien value = elf_get_addr(e, st, ST_VALUE); 826109313Sobrien size = elf_get_size(e, st, ST_SIZE); 827109313Sobrien info = elf_get_byte(e, st, ST_INFO); 828109313Sobrien shndx = elf_get_quarter(e, st, ST_SHNDX); 829109313Sobrien fprintf(out, "\n"); 830109313Sobrien fprintf(out, "entry: %d\n", i); 831109313Sobrien fprintf(out, "\tst_name: %s\n", str + name); 832110257Sobrien fprintf(out, "\tst_value: %#jx\n", value); 833110257Sobrien fprintf(out, "\tst_size: %jd\n", (intmax_t)size); 834109313Sobrien fprintf(out, "\tst_info: %s %s\n", 835109313Sobrien st_types[ELF32_ST_TYPE(info)], 836109313Sobrien st_bindings[ELF32_ST_BIND(info)]); 837110257Sobrien fprintf(out, "\tst_shndx: %jd\n", (intmax_t)shndx); 838109313Sobrien } 839109313Sobrien} 840109313Sobrien 841241737Sedstatic void 842110252Sobrienelf_print_dynamic(Elf32_Ehdr *e, void *sh) 843109313Sobrien{ 844109313Sobrien u_int64_t offset; 845109313Sobrien u_int64_t entsize; 846109313Sobrien u_int64_t size; 847109313Sobrien int64_t tag; 848109313Sobrien u_int64_t ptr; 849109313Sobrien u_int64_t val; 850109313Sobrien void *d; 851109313Sobrien int i; 852109313Sobrien 853109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 854109313Sobrien entsize = elf_get_size(e, sh, SH_ENTSIZE); 855109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 856109313Sobrien fprintf(out, "\ndynamic:\n"); 857110256Sobrien for (i = 0; (u_int64_t)i < size / entsize; i++) { 858110256Sobrien d = (char *)e + offset + i * entsize; 859109313Sobrien tag = elf_get_size(e, d, D_TAG); 860109313Sobrien ptr = elf_get_size(e, d, D_PTR); 861109313Sobrien val = elf_get_addr(e, d, D_VAL); 862109313Sobrien fprintf(out, "\n"); 863109313Sobrien fprintf(out, "entry: %d\n", i); 864109332Sobrien fprintf(out, "\td_tag: %s\n", d_tags(tag)); 865109313Sobrien switch (tag) { 866109313Sobrien case DT_NEEDED: 867109313Sobrien case DT_SONAME: 868109313Sobrien case DT_RPATH: 869109313Sobrien fprintf(out, "\td_val: %s\n", dynstr + val); 870109313Sobrien break; 871109313Sobrien case DT_PLTRELSZ: 872109313Sobrien case DT_RELA: 873109313Sobrien case DT_RELASZ: 874109313Sobrien case DT_RELAENT: 875109313Sobrien case DT_STRSZ: 876109313Sobrien case DT_SYMENT: 877109313Sobrien case DT_RELSZ: 878109313Sobrien case DT_RELENT: 879109313Sobrien case DT_PLTREL: 880110257Sobrien fprintf(out, "\td_val: %jd\n", (intmax_t)val); 881109313Sobrien break; 882109313Sobrien case DT_PLTGOT: 883109313Sobrien case DT_HASH: 884109313Sobrien case DT_STRTAB: 885109313Sobrien case DT_SYMTAB: 886109313Sobrien case DT_INIT: 887109313Sobrien case DT_FINI: 888109313Sobrien case DT_REL: 889109313Sobrien case DT_JMPREL: 890110257Sobrien fprintf(out, "\td_ptr: %#jx\n", ptr); 891109313Sobrien break; 892109313Sobrien case DT_NULL: 893109313Sobrien case DT_SYMBOLIC: 894109313Sobrien case DT_DEBUG: 895109313Sobrien case DT_TEXTREL: 896109313Sobrien break; 897109313Sobrien } 898109313Sobrien } 899109313Sobrien} 900109313Sobrien 901241737Sedstatic void 902110252Sobrienelf_print_rela(Elf32_Ehdr *e, void *sh) 903109313Sobrien{ 904109313Sobrien u_int64_t offset; 905109313Sobrien u_int64_t entsize; 906109313Sobrien u_int64_t size; 907109313Sobrien u_int64_t name; 908109313Sobrien u_int64_t info; 909109313Sobrien int64_t addend; 910109313Sobrien void *ra; 911109313Sobrien void *v; 912109313Sobrien int i; 913109313Sobrien 914109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 915109313Sobrien entsize = elf_get_size(e, sh, SH_ENTSIZE); 916109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 917109313Sobrien name = elf_get_word(e, sh, SH_NAME); 918110256Sobrien v = (char *)e + offset; 919109313Sobrien fprintf(out, "\nrelocation with addend (%s):\n", shstrtab + name); 920110256Sobrien for (i = 0; (u_int64_t)i < size / entsize; i++) { 921110256Sobrien ra = (char *)v + i * entsize; 922109313Sobrien offset = elf_get_addr(e, ra, RA_OFFSET); 923109313Sobrien info = elf_get_word(e, ra, RA_INFO); 924109313Sobrien addend = elf_get_off(e, ra, RA_ADDEND); 925109313Sobrien fprintf(out, "\n"); 926109313Sobrien fprintf(out, "entry: %d\n", i); 927110257Sobrien fprintf(out, "\tr_offset: %#jx\n", offset); 928110257Sobrien fprintf(out, "\tr_info: %jd\n", (intmax_t)info); 929110257Sobrien fprintf(out, "\tr_addend: %jd\n", (intmax_t)addend); 930109313Sobrien } 931109313Sobrien} 932109313Sobrien 933241737Sedstatic void 934110252Sobrienelf_print_rel(Elf32_Ehdr *e, void *sh) 935109313Sobrien{ 936109313Sobrien u_int64_t offset; 937109313Sobrien u_int64_t entsize; 938109313Sobrien u_int64_t size; 939109313Sobrien u_int64_t name; 940109313Sobrien u_int64_t info; 941109313Sobrien void *r; 942109313Sobrien void *v; 943109313Sobrien int i; 944109313Sobrien 945109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 946109313Sobrien entsize = elf_get_size(e, sh, SH_ENTSIZE); 947109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 948109313Sobrien name = elf_get_word(e, sh, SH_NAME); 949110256Sobrien v = (char *)e + offset; 950109313Sobrien fprintf(out, "\nrelocation (%s):\n", shstrtab + name); 951110256Sobrien for (i = 0; (u_int64_t)i < size / entsize; i++) { 952110256Sobrien r = (char *)v + i * entsize; 953109313Sobrien offset = elf_get_addr(e, r, R_OFFSET); 954109313Sobrien info = elf_get_word(e, r, R_INFO); 955109313Sobrien fprintf(out, "\n"); 956109313Sobrien fprintf(out, "entry: %d\n", i); 957110257Sobrien fprintf(out, "\tr_offset: %#jx\n", offset); 958110257Sobrien fprintf(out, "\tr_info: %jd\n", (intmax_t)info); 959109313Sobrien } 960109313Sobrien} 961109313Sobrien 962241737Sedstatic void 963110252Sobrienelf_print_interp(Elf32_Ehdr *e, void *p) 964109313Sobrien{ 965109313Sobrien u_int64_t offset; 966109313Sobrien char *s; 967109313Sobrien 968109313Sobrien offset = elf_get_off(e, p, P_OFFSET); 969110252Sobrien s = (char *)e + offset; 970109313Sobrien fprintf(out, "\ninterp:\n"); 971109313Sobrien fprintf(out, "\t%s\n", s); 972109313Sobrien} 973109313Sobrien 974241737Sedstatic void 975110252Sobrienelf_print_got(Elf32_Ehdr *e, void *sh) 976109313Sobrien{ 977109313Sobrien u_int64_t offset; 978109313Sobrien u_int64_t addralign; 979109313Sobrien u_int64_t size; 980109313Sobrien u_int64_t addr; 981109313Sobrien void *v; 982109313Sobrien int i; 983109313Sobrien 984109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 985109313Sobrien addralign = elf_get_size(e, sh, SH_ADDRALIGN); 986109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 987110256Sobrien v = (char *)e + offset; 988109313Sobrien fprintf(out, "\nglobal offset table:\n"); 989110256Sobrien for (i = 0; (u_int64_t)i < size / addralign; i++) { 990110256Sobrien addr = elf_get_addr(e, (char *)v + i * addralign, 0); 991109313Sobrien fprintf(out, "\n"); 992109313Sobrien fprintf(out, "entry: %d\n", i); 993110257Sobrien fprintf(out, "\t%#jx\n", addr); 994109313Sobrien } 995109313Sobrien} 996109313Sobrien 997241737Sedstatic void 998110256Sobrienelf_print_hash(Elf32_Ehdr *e __unused, void *sh __unused) 999109313Sobrien{ 1000109313Sobrien} 1001109313Sobrien 1002241737Sedstatic void 1003110252Sobrienelf_print_note(Elf32_Ehdr *e, void *sh) 1004109313Sobrien{ 1005109313Sobrien u_int64_t offset; 1006109313Sobrien u_int64_t size; 1007109313Sobrien u_int64_t name; 1008109313Sobrien u_int32_t namesz; 1009109313Sobrien u_int32_t descsz; 1010109313Sobrien u_int32_t desc; 1011110256Sobrien char *n, *s; 1012109313Sobrien 1013109313Sobrien offset = elf_get_off(e, sh, SH_OFFSET); 1014109313Sobrien size = elf_get_size(e, sh, SH_SIZE); 1015109313Sobrien name = elf_get_word(e, sh, SH_NAME); 1016110256Sobrien n = (char *)e + offset; 1017109313Sobrien fprintf(out, "\nnote (%s):\n", shstrtab + name); 1018110256Sobrien while (n < ((char *)e + offset + size)) { 1019109313Sobrien namesz = elf_get_word(e, n, N_NAMESZ); 1020109313Sobrien descsz = elf_get_word(e, n, N_DESCSZ); 1021110256Sobrien s = n + sizeof(Elf_Note); 1022110256Sobrien desc = elf_get_word(e, n + sizeof(Elf_Note) + namesz, 0); 1023109313Sobrien fprintf(out, "\t%s %d\n", s, desc); 1024109313Sobrien n += sizeof(Elf_Note) + namesz + descsz; 1025109313Sobrien } 1026109313Sobrien} 1027109313Sobrien 1028241737Sedstatic u_int64_t 1029109313Sobrienelf_get_byte(Elf32_Ehdr *e, void *base, elf_member_t member) 1030109313Sobrien{ 1031109313Sobrien u_int64_t val; 1032109313Sobrien 1033109313Sobrien val = 0; 1034109313Sobrien switch (e->e_ident[EI_CLASS]) { 1035109313Sobrien case ELFCLASS32: 1036226434Smarcel val = ((uint8_t *)base)[elf32_offsets[member]]; 1037109313Sobrien break; 1038109313Sobrien case ELFCLASS64: 1039226434Smarcel val = ((uint8_t *)base)[elf64_offsets[member]]; 1040109313Sobrien break; 1041109313Sobrien case ELFCLASSNONE: 1042109313Sobrien errx(1, "invalid class"); 1043109313Sobrien } 1044109313Sobrien 1045109313Sobrien return val; 1046109313Sobrien} 1047109313Sobrien 1048241737Sedstatic u_int64_t 1049109313Sobrienelf_get_quarter(Elf32_Ehdr *e, void *base, elf_member_t member) 1050109313Sobrien{ 1051109313Sobrien u_int64_t val; 1052109313Sobrien 1053109313Sobrien val = 0; 1054109313Sobrien switch (e->e_ident[EI_CLASS]) { 1055109313Sobrien case ELFCLASS32: 1056118680Smarcel base = (char *)base + elf32_offsets[member]; 1057109313Sobrien switch (e->e_ident[EI_DATA]) { 1058109313Sobrien case ELFDATA2MSB: 1059118680Smarcel val = be16dec(base); 1060109313Sobrien break; 1061109313Sobrien case ELFDATA2LSB: 1062118680Smarcel val = le16dec(base); 1063109313Sobrien break; 1064109313Sobrien case ELFDATANONE: 1065109313Sobrien errx(1, "invalid data format"); 1066109313Sobrien } 1067109313Sobrien break; 1068109313Sobrien case ELFCLASS64: 1069118680Smarcel base = (char *)base + elf64_offsets[member]; 1070109313Sobrien switch (e->e_ident[EI_DATA]) { 1071109313Sobrien case ELFDATA2MSB: 1072118680Smarcel val = be16dec(base); 1073109313Sobrien break; 1074109313Sobrien case ELFDATA2LSB: 1075118680Smarcel val = le16dec(base); 1076109313Sobrien break; 1077109313Sobrien case ELFDATANONE: 1078109313Sobrien errx(1, "invalid data format"); 1079109313Sobrien } 1080109313Sobrien break; 1081109313Sobrien case ELFCLASSNONE: 1082109313Sobrien errx(1, "invalid class"); 1083109313Sobrien } 1084109313Sobrien 1085109313Sobrien return val; 1086109313Sobrien} 1087109313Sobrien 1088241737Sed#if 0 1089241737Sedstatic u_int64_t 1090109313Sobrienelf_get_half(Elf32_Ehdr *e, void *base, elf_member_t member) 1091109313Sobrien{ 1092109313Sobrien u_int64_t val; 1093109313Sobrien 1094109313Sobrien val = 0; 1095109313Sobrien switch (e->e_ident[EI_CLASS]) { 1096109313Sobrien case ELFCLASS32: 1097118680Smarcel base = (char *)base + elf32_offsets[member]; 1098109313Sobrien switch (e->e_ident[EI_DATA]) { 1099109313Sobrien case ELFDATA2MSB: 1100118680Smarcel val = be16dec(base); 1101109313Sobrien break; 1102109313Sobrien case ELFDATA2LSB: 1103118680Smarcel val = le16dec(base); 1104109313Sobrien break; 1105109313Sobrien case ELFDATANONE: 1106109313Sobrien errx(1, "invalid data format"); 1107109313Sobrien } 1108109313Sobrien break; 1109109313Sobrien case ELFCLASS64: 1110118680Smarcel base = (char *)base + elf64_offsets[member]; 1111109313Sobrien switch (e->e_ident[EI_DATA]) { 1112109313Sobrien case ELFDATA2MSB: 1113118680Smarcel val = be32dec(base); 1114109313Sobrien break; 1115109313Sobrien case ELFDATA2LSB: 1116118680Smarcel val = le32dec(base); 1117109313Sobrien break; 1118109313Sobrien case ELFDATANONE: 1119109313Sobrien errx(1, "invalid data format"); 1120109313Sobrien } 1121109313Sobrien break; 1122109313Sobrien case ELFCLASSNONE: 1123109313Sobrien errx(1, "invalid class"); 1124109313Sobrien } 1125109313Sobrien 1126109313Sobrien return val; 1127109313Sobrien} 1128241737Sed#endif 1129109313Sobrien 1130241737Sedstatic u_int64_t 1131109313Sobrienelf_get_word(Elf32_Ehdr *e, void *base, elf_member_t member) 1132109313Sobrien{ 1133109313Sobrien u_int64_t val; 1134109313Sobrien 1135109313Sobrien val = 0; 1136109313Sobrien switch (e->e_ident[EI_CLASS]) { 1137109313Sobrien case ELFCLASS32: 1138118680Smarcel base = (char *)base + elf32_offsets[member]; 1139109313Sobrien switch (e->e_ident[EI_DATA]) { 1140109313Sobrien case ELFDATA2MSB: 1141118680Smarcel val = be32dec(base); 1142109313Sobrien break; 1143109313Sobrien case ELFDATA2LSB: 1144118680Smarcel val = le32dec(base); 1145109313Sobrien break; 1146109313Sobrien case ELFDATANONE: 1147109313Sobrien errx(1, "invalid data format"); 1148109313Sobrien } 1149109313Sobrien break; 1150109313Sobrien case ELFCLASS64: 1151118680Smarcel base = (char *)base + elf64_offsets[member]; 1152109313Sobrien switch (e->e_ident[EI_DATA]) { 1153109313Sobrien case ELFDATA2MSB: 1154118680Smarcel val = be32dec(base); 1155109313Sobrien break; 1156109313Sobrien case ELFDATA2LSB: 1157118680Smarcel val = le32dec(base); 1158109313Sobrien break; 1159109313Sobrien case ELFDATANONE: 1160109313Sobrien errx(1, "invalid data format"); 1161109313Sobrien } 1162109313Sobrien break; 1163109313Sobrien case ELFCLASSNONE: 1164109313Sobrien errx(1, "invalid class"); 1165109313Sobrien } 1166109313Sobrien 1167109313Sobrien return val; 1168109313Sobrien} 1169109313Sobrien 1170241737Sedstatic u_int64_t 1171109313Sobrienelf_get_quad(Elf32_Ehdr *e, void *base, elf_member_t member) 1172109313Sobrien{ 1173109313Sobrien u_int64_t val; 1174109313Sobrien 1175109313Sobrien val = 0; 1176109313Sobrien switch (e->e_ident[EI_CLASS]) { 1177109313Sobrien case ELFCLASS32: 1178118680Smarcel base = (char *)base + elf32_offsets[member]; 1179109313Sobrien switch (e->e_ident[EI_DATA]) { 1180109313Sobrien case ELFDATA2MSB: 1181118680Smarcel val = be32dec(base); 1182109313Sobrien break; 1183109313Sobrien case ELFDATA2LSB: 1184118680Smarcel val = le32dec(base); 1185109313Sobrien break; 1186109313Sobrien case ELFDATANONE: 1187109313Sobrien errx(1, "invalid data format"); 1188109313Sobrien } 1189109313Sobrien break; 1190109313Sobrien case ELFCLASS64: 1191118680Smarcel base = (char *)base + elf64_offsets[member]; 1192109313Sobrien switch (e->e_ident[EI_DATA]) { 1193109313Sobrien case ELFDATA2MSB: 1194118680Smarcel val = be64dec(base); 1195109313Sobrien break; 1196109313Sobrien case ELFDATA2LSB: 1197118680Smarcel val = le64dec(base); 1198109313Sobrien break; 1199109313Sobrien case ELFDATANONE: 1200109313Sobrien errx(1, "invalid data format"); 1201109313Sobrien } 1202109313Sobrien break; 1203109313Sobrien case ELFCLASSNONE: 1204109313Sobrien errx(1, "invalid class"); 1205109313Sobrien } 1206109313Sobrien 1207109313Sobrien return val; 1208109313Sobrien} 1209109313Sobrien 1210241737Sedstatic void 1211109313Sobrienusage(void) 1212109313Sobrien{ 1213117009Sru fprintf(stderr, "usage: elfdump -a | -cdeGhinprs [-w file] file\n"); 1214109313Sobrien exit(1); 1215109313Sobrien} 1216