2 * Copyright (c) 2003 David O'Brien. All rights reserved.
3 * Copyright (c) 2001 Jake Burkholder
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
31 #include <sys/types.h>
33 #include <sys/capsicum.h>
34 #include <sys/elf32.h>
35 #include <sys/elf64.h>
36 #include <sys/endian.h>
50 #define ED_EHDR (1<<1)
52 #define ED_HASH (1<<3)
53 #define ED_INTERP (1<<4)
54 #define ED_NOTE (1<<5)
55 #define ED_PHDR (1<<6)
57 #define ED_SHDR (1<<8)
58 #define ED_SYMTAB (1<<9)
59 #define ED_ALL ((1<<10)-1)
61 #define elf_get_addr elf_get_quad
62 #define elf_get_off elf_get_quad
63 #define elf_get_size elf_get_quad
66 D_TAG = 1, D_PTR, D_VAL,
68 E_CLASS, E_DATA, E_OSABI, E_TYPE, E_MACHINE, E_VERSION, E_ENTRY,
69 E_PHOFF, E_SHOFF, E_FLAGS, E_EHSIZE, E_PHENTSIZE, E_PHNUM, E_SHENTSIZE,
72 N_NAMESZ, N_DESCSZ, N_TYPE,
74 P_TYPE, P_OFFSET, P_VADDR, P_PADDR, P_FILESZ, P_MEMSZ, P_FLAGS,
77 SH_NAME, SH_TYPE, SH_FLAGS, SH_ADDR, SH_OFFSET, SH_SIZE, SH_LINK,
78 SH_INFO, SH_ADDRALIGN, SH_ENTSIZE,
80 ST_NAME, ST_VALUE, ST_SIZE, ST_INFO, ST_SHNDX,
84 RA_OFFSET, RA_INFO, RA_ADDEND
87 typedef enum elf_member elf_member_t;
89 static int elf32_offsets[] = {
92 offsetof(Elf32_Dyn, d_tag), offsetof(Elf32_Dyn, d_un.d_ptr),
93 offsetof(Elf32_Dyn, d_un.d_val),
95 offsetof(Elf32_Ehdr, e_ident[EI_CLASS]),
96 offsetof(Elf32_Ehdr, e_ident[EI_DATA]),
97 offsetof(Elf32_Ehdr, e_ident[EI_OSABI]),
98 offsetof(Elf32_Ehdr, e_type), offsetof(Elf32_Ehdr, e_machine),
99 offsetof(Elf32_Ehdr, e_version), offsetof(Elf32_Ehdr, e_entry),
100 offsetof(Elf32_Ehdr, e_phoff), offsetof(Elf32_Ehdr, e_shoff),
101 offsetof(Elf32_Ehdr, e_flags), offsetof(Elf32_Ehdr, e_ehsize),
102 offsetof(Elf32_Ehdr, e_phentsize), offsetof(Elf32_Ehdr, e_phnum),
103 offsetof(Elf32_Ehdr, e_shentsize), offsetof(Elf32_Ehdr, e_shnum),
104 offsetof(Elf32_Ehdr, e_shstrndx),
106 offsetof(Elf_Note, n_namesz), offsetof(Elf_Note, n_descsz),
107 offsetof(Elf_Note, n_type),
109 offsetof(Elf32_Phdr, p_type), offsetof(Elf32_Phdr, p_offset),
110 offsetof(Elf32_Phdr, p_vaddr), offsetof(Elf32_Phdr, p_paddr),
111 offsetof(Elf32_Phdr, p_filesz), offsetof(Elf32_Phdr, p_memsz),
112 offsetof(Elf32_Phdr, p_flags), offsetof(Elf32_Phdr, p_align),
114 offsetof(Elf32_Shdr, sh_name), offsetof(Elf32_Shdr, sh_type),
115 offsetof(Elf32_Shdr, sh_flags), offsetof(Elf32_Shdr, sh_addr),
116 offsetof(Elf32_Shdr, sh_offset), offsetof(Elf32_Shdr, sh_size),
117 offsetof(Elf32_Shdr, sh_link), offsetof(Elf32_Shdr, sh_info),
118 offsetof(Elf32_Shdr, sh_addralign), offsetof(Elf32_Shdr, sh_entsize),
120 offsetof(Elf32_Sym, st_name), offsetof(Elf32_Sym, st_value),
121 offsetof(Elf32_Sym, st_size), offsetof(Elf32_Sym, st_info),
122 offsetof(Elf32_Sym, st_shndx),
124 offsetof(Elf32_Rel, r_offset), offsetof(Elf32_Rel, r_info),
126 offsetof(Elf32_Rela, r_offset), offsetof(Elf32_Rela, r_info),
127 offsetof(Elf32_Rela, r_addend)
130 static int elf64_offsets[] = {
133 offsetof(Elf64_Dyn, d_tag), offsetof(Elf64_Dyn, d_un.d_ptr),
134 offsetof(Elf64_Dyn, d_un.d_val),
136 offsetof(Elf32_Ehdr, e_ident[EI_CLASS]),
137 offsetof(Elf32_Ehdr, e_ident[EI_DATA]),
138 offsetof(Elf32_Ehdr, e_ident[EI_OSABI]),
139 offsetof(Elf64_Ehdr, e_type), offsetof(Elf64_Ehdr, e_machine),
140 offsetof(Elf64_Ehdr, e_version), offsetof(Elf64_Ehdr, e_entry),
141 offsetof(Elf64_Ehdr, e_phoff), offsetof(Elf64_Ehdr, e_shoff),
142 offsetof(Elf64_Ehdr, e_flags), offsetof(Elf64_Ehdr, e_ehsize),
143 offsetof(Elf64_Ehdr, e_phentsize), offsetof(Elf64_Ehdr, e_phnum),
144 offsetof(Elf64_Ehdr, e_shentsize), offsetof(Elf64_Ehdr, e_shnum),
145 offsetof(Elf64_Ehdr, e_shstrndx),
147 offsetof(Elf_Note, n_namesz), offsetof(Elf_Note, n_descsz),
148 offsetof(Elf_Note, n_type),
150 offsetof(Elf64_Phdr, p_type), offsetof(Elf64_Phdr, p_offset),
151 offsetof(Elf64_Phdr, p_vaddr), offsetof(Elf64_Phdr, p_paddr),
152 offsetof(Elf64_Phdr, p_filesz), offsetof(Elf64_Phdr, p_memsz),
153 offsetof(Elf64_Phdr, p_flags), offsetof(Elf64_Phdr, p_align),
155 offsetof(Elf64_Shdr, sh_name), offsetof(Elf64_Shdr, sh_type),
156 offsetof(Elf64_Shdr, sh_flags), offsetof(Elf64_Shdr, sh_addr),
157 offsetof(Elf64_Shdr, sh_offset), offsetof(Elf64_Shdr, sh_size),
158 offsetof(Elf64_Shdr, sh_link), offsetof(Elf64_Shdr, sh_info),
159 offsetof(Elf64_Shdr, sh_addralign), offsetof(Elf64_Shdr, sh_entsize),
161 offsetof(Elf64_Sym, st_name), offsetof(Elf64_Sym, st_value),
162 offsetof(Elf64_Sym, st_size), offsetof(Elf64_Sym, st_info),
163 offsetof(Elf64_Sym, st_shndx),
165 offsetof(Elf64_Rel, r_offset), offsetof(Elf64_Rel, r_info),
167 offsetof(Elf64_Rela, r_offset), offsetof(Elf64_Rela, r_info),
168 offsetof(Elf64_Rela, r_addend)
171 /* http://www.sco.com/developers/gabi/latest/ch5.dynamic.html#tag_encodings */
173 d_tags(u_int64_t tag)
175 static char unknown_tag[48];
178 case DT_NULL: return "DT_NULL";
179 case DT_NEEDED: return "DT_NEEDED";
180 case DT_PLTRELSZ: return "DT_PLTRELSZ";
181 case DT_PLTGOT: return "DT_PLTGOT";
182 case DT_HASH: return "DT_HASH";
183 case DT_STRTAB: return "DT_STRTAB";
184 case DT_SYMTAB: return "DT_SYMTAB";
185 case DT_RELA: return "DT_RELA";
186 case DT_RELASZ: return "DT_RELASZ";
187 case DT_RELAENT: return "DT_RELAENT";
188 case DT_STRSZ: return "DT_STRSZ";
189 case DT_SYMENT: return "DT_SYMENT";
190 case DT_INIT: return "DT_INIT";
191 case DT_FINI: return "DT_FINI";
192 case DT_SONAME: return "DT_SONAME";
193 case DT_RPATH: return "DT_RPATH";
194 case DT_SYMBOLIC: return "DT_SYMBOLIC";
195 case DT_REL: return "DT_REL";
196 case DT_RELSZ: return "DT_RELSZ";
197 case DT_RELENT: return "DT_RELENT";
198 case DT_PLTREL: return "DT_PLTREL";
199 case DT_DEBUG: return "DT_DEBUG";
200 case DT_TEXTREL: return "DT_TEXTREL";
201 case DT_JMPREL: return "DT_JMPREL";
202 case DT_BIND_NOW: return "DT_BIND_NOW";
203 case DT_INIT_ARRAY: return "DT_INIT_ARRAY";
204 case DT_FINI_ARRAY: return "DT_FINI_ARRAY";
205 case DT_INIT_ARRAYSZ: return "DT_INIT_ARRAYSZ";
206 case DT_FINI_ARRAYSZ: return "DT_FINI_ARRAYSZ";
207 case DT_RUNPATH: return "DT_RUNPATH";
208 case DT_FLAGS: return "DT_FLAGS";
209 case DT_PREINIT_ARRAY: return "DT_PREINIT_ARRAY"; /* XXX DT_ENCODING */
210 case DT_PREINIT_ARRAYSZ:return "DT_PREINIT_ARRAYSZ";
211 /* 0x6000000D - 0x6ffff000 operating system-specific semantics */
212 case 0x6ffffdf5: return "DT_GNU_PRELINKED";
213 case 0x6ffffdf6: return "DT_GNU_CONFLICTSZ";
214 case 0x6ffffdf7: return "DT_GNU_LIBLISTSZ";
215 case 0x6ffffdf8: return "DT_SUNW_CHECKSUM";
216 case DT_PLTPADSZ: return "DT_PLTPADSZ";
217 case DT_MOVEENT: return "DT_MOVEENT";
218 case DT_MOVESZ: return "DT_MOVESZ";
219 case DT_FEATURE: return "DT_FEATURE";
220 case DT_POSFLAG_1: return "DT_POSFLAG_1";
221 case DT_SYMINSZ: return "DT_SYMINSZ";
222 case DT_SYMINENT : return "DT_SYMINENT (DT_VALRNGHI)";
223 case DT_ADDRRNGLO: return "DT_ADDRRNGLO";
224 case DT_GNU_HASH: return "DT_GNU_HASH";
225 case 0x6ffffef8: return "DT_GNU_CONFLICT";
226 case 0x6ffffef9: return "DT_GNU_LIBLIST";
227 case DT_CONFIG: return "DT_CONFIG";
228 case DT_DEPAUDIT: return "DT_DEPAUDIT";
229 case DT_AUDIT: return "DT_AUDIT";
230 case DT_PLTPAD: return "DT_PLTPAD";
231 case DT_MOVETAB: return "DT_MOVETAB";
232 case DT_SYMINFO : return "DT_SYMINFO (DT_ADDRRNGHI)";
233 case DT_RELACOUNT: return "DT_RELACOUNT";
234 case DT_RELCOUNT: return "DT_RELCOUNT";
235 case DT_FLAGS_1: return "DT_FLAGS_1";
236 case DT_VERDEF: return "DT_VERDEF";
237 case DT_VERDEFNUM: return "DT_VERDEFNUM";
238 case DT_VERNEED: return "DT_VERNEED";
239 case DT_VERNEEDNUM: return "DT_VERNEEDNUM";
240 case 0x6ffffff0: return "DT_GNU_VERSYM";
241 /* 0x70000000 - 0x7fffffff processor-specific semantics */
242 case 0x70000000: return "DT_IA_64_PLT_RESERVE";
243 case 0x7ffffffd: return "DT_SUNW_AUXILIARY";
244 case 0x7ffffffe: return "DT_SUNW_USED";
245 case 0x7fffffff: return "DT_SUNW_FILTER";
247 snprintf(unknown_tag, sizeof(unknown_tag),
248 "ERROR: TAG NOT DEFINED -- tag 0x%jx", (uintmax_t)tag);
249 return (unknown_tag);
253 e_machines(u_int mach)
255 static char machdesc[64];
258 case EM_NONE: return "EM_NONE";
259 case EM_M32: return "EM_M32";
260 case EM_SPARC: return "EM_SPARC";
261 case EM_386: return "EM_386";
262 case EM_68K: return "EM_68K";
263 case EM_88K: return "EM_88K";
264 case EM_IAMCU: return "EM_IAMCU";
265 case EM_860: return "EM_860";
266 case EM_MIPS: return "EM_MIPS";
267 case EM_PPC: return "EM_PPC";
268 case EM_PPC64: return "EM_PPC64";
269 case EM_ARM: return "EM_ARM";
270 case EM_ALPHA: return "EM_ALPHA (legacy)";
271 case EM_SPARCV9:return "EM_SPARCV9";
272 case EM_IA_64: return "EM_IA_64";
273 case EM_X86_64: return "EM_X86_64";
274 case EM_AARCH64:return "EM_AARCH64";
275 case EM_RISCV: return "EM_RISCV";
277 snprintf(machdesc, sizeof(machdesc),
278 "(unknown machine) -- type 0x%x", mach);
282 static const char *e_types[] = {
283 "ET_NONE", "ET_REL", "ET_EXEC", "ET_DYN", "ET_CORE"
286 static const char *ei_versions[] = {
287 "EV_NONE", "EV_CURRENT"
290 static const char *ei_classes[] = {
291 "ELFCLASSNONE", "ELFCLASS32", "ELFCLASS64"
294 static const char *ei_data[] = {
295 "ELFDATANONE", "ELFDATA2LSB", "ELFDATA2MSB"
298 static const char *ei_abis[256] = {
299 "ELFOSABI_SYSV", "ELFOSABI_HPUX", "ELFOSABI_NETBSD", "ELFOSABI_LINUX",
300 "ELFOSABI_HURD", "ELFOSABI_86OPEN", "ELFOSABI_SOLARIS", "ELFOSABI_AIX",
301 "ELFOSABI_IRIX", "ELFOSABI_FREEBSD", "ELFOSABI_TRU64",
302 "ELFOSABI_MODESTO", "ELFOSABI_OPENBSD",
303 [255] = "ELFOSABI_STANDALONE"
306 static const char *p_types[] = {
307 "PT_NULL", "PT_LOAD", "PT_DYNAMIC", "PT_INTERP", "PT_NOTE",
308 "PT_SHLIB", "PT_PHDR", "PT_TLS"
311 static const char *p_flags[] = {
312 "", "PF_X", "PF_W", "PF_X|PF_W", "PF_R", "PF_X|PF_R", "PF_W|PF_R",
316 /* http://www.sco.com/developers/gabi/latest/ch4.sheader.html#sh_type */
318 sh_types(uint64_t machine, uint64_t sht) {
319 static char unknown_buf[64];
321 if (sht < 0x60000000) {
323 case SHT_NULL: return "SHT_NULL";
324 case SHT_PROGBITS: return "SHT_PROGBITS";
325 case SHT_SYMTAB: return "SHT_SYMTAB";
326 case SHT_STRTAB: return "SHT_STRTAB";
327 case SHT_RELA: return "SHT_RELA";
328 case SHT_HASH: return "SHT_HASH";
329 case SHT_DYNAMIC: return "SHT_DYNAMIC";
330 case SHT_NOTE: return "SHT_NOTE";
331 case SHT_NOBITS: return "SHT_NOBITS";
332 case SHT_REL: return "SHT_REL";
333 case SHT_SHLIB: return "SHT_SHLIB";
334 case SHT_DYNSYM: return "SHT_DYNSYM";
335 case SHT_INIT_ARRAY: return "SHT_INIT_ARRAY";
336 case SHT_FINI_ARRAY: return "SHT_FINI_ARRAY";
337 case SHT_PREINIT_ARRAY: return "SHT_PREINIT_ARRAY";
338 case SHT_GROUP: return "SHT_GROUP";
339 case SHT_SYMTAB_SHNDX: return "SHT_SYMTAB_SHNDX";
341 snprintf(unknown_buf, sizeof(unknown_buf),
342 "ERROR: SHT %ju NOT DEFINED", (uintmax_t)sht);
343 return (unknown_buf);
344 } else if (sht < 0x70000000) {
345 /* 0x60000000-0x6fffffff operating system-specific semantics */
347 case 0x6ffffff0: return "XXX:VERSYM";
348 case SHT_SUNW_dof: return "SHT_SUNW_dof";
349 case SHT_GNU_HASH: return "SHT_GNU_HASH";
350 case 0x6ffffff7: return "SHT_GNU_LIBLIST";
351 case 0x6ffffffc: return "XXX:VERDEF";
352 case SHT_SUNW_verdef: return "SHT_SUNW(GNU)_verdef";
353 case SHT_SUNW_verneed: return "SHT_SUNW(GNU)_verneed";
354 case SHT_SUNW_versym: return "SHT_SUNW(GNU)_versym";
356 snprintf(unknown_buf, sizeof(unknown_buf),
357 "ERROR: OS-SPECIFIC SHT 0x%jx NOT DEFINED",
359 return (unknown_buf);
360 } else if (sht < 0x80000000) {
361 /* 0x70000000-0x7fffffff processor-specific semantics */
365 case SHT_ARM_EXIDX: return "SHT_ARM_EXIDX";
366 case SHT_ARM_PREEMPTMAP:return "SHT_ARM_PREEMPTMAP";
367 case SHT_ARM_ATTRIBUTES:return "SHT_ARM_ATTRIBUTES";
368 case SHT_ARM_DEBUGOVERLAY:
369 return "SHT_ARM_DEBUGOVERLAY";
370 case SHT_ARM_OVERLAYSECTION:
371 return "SHT_ARM_OVERLAYSECTION";
376 case 0x70000000: return "SHT_IA_64_EXT";
377 case 0x70000001: return "SHT_IA_64_UNWIND";
382 case SHT_MIPS_OPTIONS: return "SHT_MIPS_OPTIONS";
387 case 0x7ffffffd: return "XXX:AUXILIARY";
388 case 0x7fffffff: return "XXX:FILTER";
390 snprintf(unknown_buf, sizeof(unknown_buf),
391 "ERROR: PROCESSOR-SPECIFIC SHT 0x%jx NOT DEFINED",
393 return (unknown_buf);
395 /* 0x80000000-0xffffffff application programs */
396 snprintf(unknown_buf, sizeof(unknown_buf),
397 "ERROR: SHT 0x%jx NOT DEFINED",
399 return (unknown_buf);
403 static const char *sh_flags[] = {
404 "", "SHF_WRITE", "SHF_ALLOC", "SHF_WRITE|SHF_ALLOC", "SHF_EXECINSTR",
405 "SHF_WRITE|SHF_EXECINSTR", "SHF_ALLOC|SHF_EXECINSTR",
406 "SHF_WRITE|SHF_ALLOC|SHF_EXECINSTR"
409 static const char *st_types[] = {
410 "STT_NOTYPE", "STT_OBJECT", "STT_FUNC", "STT_SECTION", "STT_FILE"
413 static const char *st_bindings[] = {
414 "STB_LOCAL", "STB_GLOBAL", "STB_WEAK"
418 static char *shstrtab;
422 static u_int64_t elf_get_byte(Elf32_Ehdr *e, void *base, elf_member_t member);
423 static u_int64_t elf_get_quarter(Elf32_Ehdr *e, void *base,
424 elf_member_t member);
426 static u_int64_t elf_get_half(Elf32_Ehdr *e, void *base, elf_member_t member);
428 static u_int64_t elf_get_word(Elf32_Ehdr *e, void *base, elf_member_t member);
429 static u_int64_t elf_get_quad(Elf32_Ehdr *e, void *base, elf_member_t member);
431 static void elf_print_ehdr(Elf32_Ehdr *e, void *sh);
432 static void elf_print_phdr(Elf32_Ehdr *e, void *p);
433 static void elf_print_shdr(Elf32_Ehdr *e, void *sh);
434 static void elf_print_symtab(Elf32_Ehdr *e, void *sh, char *str);
435 static void elf_print_dynamic(Elf32_Ehdr *e, void *sh);
436 static void elf_print_rel(Elf32_Ehdr *e, void *r);
437 static void elf_print_rela(Elf32_Ehdr *e, void *ra);
438 static void elf_print_interp(Elf32_Ehdr *e, void *p);
439 static void elf_print_got(Elf32_Ehdr *e, void *sh);
440 static void elf_print_hash(Elf32_Ehdr *e, void *sh);
441 static void elf_print_note(Elf32_Ehdr *e, void *sh);
443 static void usage(void);
446 * Helpers for ELF files with shnum or shstrndx values that don't fit in the
447 * ELF header. If the values are too large then an escape value is used to
448 * indicate that the actual value is found in one of section 0's fields.
451 elf_get_shnum(Elf32_Ehdr *e, void *sh)
455 shnum = elf_get_quarter(e, e, E_SHNUM);
457 shnum = elf_get_word(e, (char *)sh, SH_SIZE);
462 elf_get_shstrndx(Elf32_Ehdr *e, void *sh)
466 shstrndx = elf_get_quarter(e, e, E_SHSTRNDX);
467 if (shstrndx == SHN_XINDEX)
468 shstrndx = elf_get_word(e, (char *)sh, SH_LINK);
473 main(int ac, char **av)
498 while ((ch = getopt(ac, av, "acdeiGhnprsw:")) != -1)
534 if ((out = fopen(optarg, "w")) == NULL)
535 err(1, "%s", optarg);
536 cap_rights_init(&rights, CAP_FSTAT, CAP_WRITE);
537 if (cap_rights_limit(fileno(out), &rights) < 0 && errno != ENOSYS)
538 err(1, "unable to limit rights for %s", optarg);
546 if (ac == 0 || flags == 0)
548 if ((fd = open(*av, O_RDONLY)) < 0 ||
551 cap_rights_init(&rights, CAP_MMAP_R);
552 if (cap_rights_limit(fd, &rights) < 0 && errno != ENOSYS)
553 err(1, "unable to limit rights for %s", *av);
555 cap_rights_init(&rights, CAP_WRITE);
556 if (cap_rights_limit(STDOUT_FILENO, &rights) < 0 && errno != ENOSYS)
557 err(1, "unable to limit rights for stdout");
558 if (cap_rights_limit(STDERR_FILENO, &rights) < 0 && errno != ENOSYS)
559 err(1, "unable to limit rights for stderr");
560 if (cap_enter() < 0 && errno != ENOSYS)
561 err(1, "unable to enter capability mode");
562 e = mmap(NULL, sb.st_size, PROT_READ, MAP_SHARED, fd, 0);
565 if (!IS_ELF(*(Elf32_Ehdr *)e))
566 errx(1, "not an elf file");
567 phoff = elf_get_off(e, e, E_PHOFF);
568 shoff = elf_get_off(e, e, E_SHOFF);
569 phentsize = elf_get_quarter(e, e, E_PHENTSIZE);
570 phnum = elf_get_quarter(e, e, E_PHNUM);
571 shentsize = elf_get_quarter(e, e, E_SHENTSIZE);
572 p = (char *)e + phoff;
574 sh = (char *)e + shoff;
575 shnum = elf_get_shnum(e, sh);
576 shstrndx = elf_get_shstrndx(e, sh);
577 offset = elf_get_off(e, (char *)sh + shstrndx * shentsize,
579 shstrtab = (char *)e + offset;
586 for (i = 0; (u_int64_t)i < shnum; i++) {
587 name = elf_get_word(e, (char *)sh + i * shentsize, SH_NAME);
588 offset = elf_get_off(e, (char *)sh + i * shentsize, SH_OFFSET);
589 if (strcmp(shstrtab + name, ".strtab") == 0)
590 strtab = (char *)e + offset;
591 if (strcmp(shstrtab + name, ".dynstr") == 0)
592 dynstr = (char *)e + offset;
595 elf_print_ehdr(e, sh);
597 elf_print_phdr(e, p);
599 elf_print_shdr(e, sh);
600 for (i = 0; (u_int64_t)i < phnum; i++) {
601 v = (char *)p + i * phentsize;
602 type = elf_get_word(e, v, P_TYPE);
605 if (flags & ED_INTERP)
606 elf_print_interp(e, v);
617 for (i = 0; (u_int64_t)i < shnum; i++) {
618 v = (char *)sh + i * shentsize;
619 type = elf_get_word(e, v, SH_TYPE);
622 if (flags & ED_SYMTAB)
623 elf_print_symtab(e, v, strtab);
627 elf_print_dynamic(e, v);
631 elf_print_rela(e, v);
638 name = elf_get_word(e, v, SH_NAME);
639 if (flags & ED_NOTE &&
640 strcmp(shstrtab + name, ".note.ABI-tag") == 0)
641 elf_print_note(e, v);
644 if (flags & ED_SYMTAB)
645 elf_print_symtab(e, v, dynstr);
648 name = elf_get_word(e, v, SH_NAME);
649 if (flags & ED_GOT &&
650 strcmp(shstrtab + name, ".got") == 0)
655 elf_print_hash(e, v);
669 elf_print_ehdr(Elf32_Ehdr *e, void *sh)
688 class = elf_get_byte(e, e, E_CLASS);
689 data = elf_get_byte(e, e, E_DATA);
690 osabi = elf_get_byte(e, e, E_OSABI);
691 type = elf_get_quarter(e, e, E_TYPE);
692 machine = elf_get_quarter(e, e, E_MACHINE);
693 version = elf_get_word(e, e, E_VERSION);
694 entry = elf_get_addr(e, e, E_ENTRY);
695 phoff = elf_get_off(e, e, E_PHOFF);
696 shoff = elf_get_off(e, e, E_SHOFF);
697 flags = elf_get_word(e, e, E_FLAGS);
698 ehsize = elf_get_quarter(e, e, E_EHSIZE);
699 phentsize = elf_get_quarter(e, e, E_PHENTSIZE);
700 phnum = elf_get_quarter(e, e, E_PHNUM);
701 shentsize = elf_get_quarter(e, e, E_SHENTSIZE);
702 fprintf(out, "\nelf header:\n");
704 fprintf(out, "\te_ident: %s %s %s\n", ei_classes[class], ei_data[data],
706 fprintf(out, "\te_type: %s\n", e_types[type]);
707 fprintf(out, "\te_machine: %s\n", e_machines(machine));
708 fprintf(out, "\te_version: %s\n", ei_versions[version]);
709 fprintf(out, "\te_entry: %#jx\n", (intmax_t)entry);
710 fprintf(out, "\te_phoff: %jd\n", (intmax_t)phoff);
711 fprintf(out, "\te_shoff: %jd\n", (intmax_t)shoff);
712 fprintf(out, "\te_flags: %jd\n", (intmax_t)flags);
713 fprintf(out, "\te_ehsize: %jd\n", (intmax_t)ehsize);
714 fprintf(out, "\te_phentsize: %jd\n", (intmax_t)phentsize);
715 fprintf(out, "\te_phnum: %jd\n", (intmax_t)phnum);
716 fprintf(out, "\te_shentsize: %jd\n", (intmax_t)shentsize);
718 shnum = elf_get_shnum(e, sh);
719 shstrndx = elf_get_shstrndx(e, sh);
720 fprintf(out, "\te_shnum: %jd\n", (intmax_t)shnum);
721 fprintf(out, "\te_shstrndx: %jd\n", (intmax_t)shstrndx);
726 elf_print_phdr(Elf32_Ehdr *e, void *p)
741 phentsize = elf_get_quarter(e, e, E_PHENTSIZE);
742 phnum = elf_get_quarter(e, e, E_PHNUM);
743 fprintf(out, "\nprogram header:\n");
744 for (i = 0; (u_int64_t)i < phnum; i++) {
745 v = (char *)p + i * phentsize;
746 type = elf_get_word(e, v, P_TYPE);
747 offset = elf_get_off(e, v, P_OFFSET);
748 vaddr = elf_get_addr(e, v, P_VADDR);
749 paddr = elf_get_addr(e, v, P_PADDR);
750 filesz = elf_get_size(e, v, P_FILESZ);
751 memsz = elf_get_size(e, v, P_MEMSZ);
752 flags = elf_get_word(e, v, P_FLAGS);
753 align = elf_get_size(e, v, P_ALIGN);
755 fprintf(out, "entry: %d\n", i);
756 fprintf(out, "\tp_type: %s\n", p_types[type & 0x7]);
757 fprintf(out, "\tp_offset: %jd\n", (intmax_t)offset);
758 fprintf(out, "\tp_vaddr: %#jx\n", (intmax_t)vaddr);
759 fprintf(out, "\tp_paddr: %#jx\n", (intmax_t)paddr);
760 fprintf(out, "\tp_filesz: %jd\n", (intmax_t)filesz);
761 fprintf(out, "\tp_memsz: %jd\n", (intmax_t)memsz);
762 fprintf(out, "\tp_flags: %s\n", p_flags[flags]);
763 fprintf(out, "\tp_align: %jd\n", (intmax_t)align);
768 elf_print_shdr(Elf32_Ehdr *e, void *sh)
787 fprintf(out, "\nNo section headers\n");
791 machine = elf_get_quarter(e, e, E_MACHINE);
792 shentsize = elf_get_quarter(e, e, E_SHENTSIZE);
793 shnum = elf_get_shnum(e, sh);
794 fprintf(out, "\nsection header:\n");
795 for (i = 0; (u_int64_t)i < shnum; i++) {
796 v = (char *)sh + i * shentsize;
797 name = elf_get_word(e, v, SH_NAME);
798 type = elf_get_word(e, v, SH_TYPE);
799 flags = elf_get_word(e, v, SH_FLAGS);
800 addr = elf_get_addr(e, v, SH_ADDR);
801 offset = elf_get_off(e, v, SH_OFFSET);
802 size = elf_get_size(e, v, SH_SIZE);
803 shlink = elf_get_word(e, v, SH_LINK);
804 info = elf_get_word(e, v, SH_INFO);
805 addralign = elf_get_size(e, v, SH_ADDRALIGN);
806 entsize = elf_get_size(e, v, SH_ENTSIZE);
808 fprintf(out, "entry: %d\n", i);
809 fprintf(out, "\tsh_name: %s\n", shstrtab + name);
810 fprintf(out, "\tsh_type: %s\n", sh_types(machine, type));
811 fprintf(out, "\tsh_flags: %s\n", sh_flags[flags & 0x7]);
812 fprintf(out, "\tsh_addr: %#jx\n", addr);
813 fprintf(out, "\tsh_offset: %jd\n", (intmax_t)offset);
814 fprintf(out, "\tsh_size: %jd\n", (intmax_t)size);
815 fprintf(out, "\tsh_link: %jd\n", (intmax_t)shlink);
816 fprintf(out, "\tsh_info: %jd\n", (intmax_t)info);
817 fprintf(out, "\tsh_addralign: %jd\n", (intmax_t)addralign);
818 fprintf(out, "\tsh_entsize: %jd\n", (intmax_t)entsize);
823 elf_print_symtab(Elf32_Ehdr *e, void *sh, char *str)
836 offset = elf_get_off(e, sh, SH_OFFSET);
837 entsize = elf_get_size(e, sh, SH_ENTSIZE);
838 size = elf_get_size(e, sh, SH_SIZE);
839 name = elf_get_word(e, sh, SH_NAME);
840 len = size / entsize;
841 fprintf(out, "\nsymbol table (%s):\n", shstrtab + name);
842 for (i = 0; i < len; i++) {
843 st = (char *)e + offset + i * entsize;
844 name = elf_get_word(e, st, ST_NAME);
845 value = elf_get_addr(e, st, ST_VALUE);
846 size = elf_get_size(e, st, ST_SIZE);
847 info = elf_get_byte(e, st, ST_INFO);
848 shndx = elf_get_quarter(e, st, ST_SHNDX);
850 fprintf(out, "entry: %d\n", i);
851 fprintf(out, "\tst_name: %s\n", str + name);
852 fprintf(out, "\tst_value: %#jx\n", value);
853 fprintf(out, "\tst_size: %jd\n", (intmax_t)size);
854 fprintf(out, "\tst_info: %s %s\n",
855 st_types[ELF32_ST_TYPE(info)],
856 st_bindings[ELF32_ST_BIND(info)]);
857 fprintf(out, "\tst_shndx: %jd\n", (intmax_t)shndx);
862 elf_print_dynamic(Elf32_Ehdr *e, void *sh)
873 offset = elf_get_off(e, sh, SH_OFFSET);
874 entsize = elf_get_size(e, sh, SH_ENTSIZE);
875 size = elf_get_size(e, sh, SH_SIZE);
876 fprintf(out, "\ndynamic:\n");
877 for (i = 0; (u_int64_t)i < size / entsize; i++) {
878 d = (char *)e + offset + i * entsize;
879 tag = elf_get_size(e, d, D_TAG);
880 ptr = elf_get_size(e, d, D_PTR);
881 val = elf_get_addr(e, d, D_VAL);
883 fprintf(out, "entry: %d\n", i);
884 fprintf(out, "\td_tag: %s\n", d_tags(tag));
889 fprintf(out, "\td_val: %s\n", dynstr + val);
900 fprintf(out, "\td_val: %jd\n", (intmax_t)val);
910 fprintf(out, "\td_ptr: %#jx\n", ptr);
922 elf_print_rela(Elf32_Ehdr *e, void *sh)
934 offset = elf_get_off(e, sh, SH_OFFSET);
935 entsize = elf_get_size(e, sh, SH_ENTSIZE);
936 size = elf_get_size(e, sh, SH_SIZE);
937 name = elf_get_word(e, sh, SH_NAME);
938 v = (char *)e + offset;
939 fprintf(out, "\nrelocation with addend (%s):\n", shstrtab + name);
940 for (i = 0; (u_int64_t)i < size / entsize; i++) {
941 ra = (char *)v + i * entsize;
942 offset = elf_get_addr(e, ra, RA_OFFSET);
943 info = elf_get_word(e, ra, RA_INFO);
944 addend = elf_get_off(e, ra, RA_ADDEND);
946 fprintf(out, "entry: %d\n", i);
947 fprintf(out, "\tr_offset: %#jx\n", offset);
948 fprintf(out, "\tr_info: %jd\n", (intmax_t)info);
949 fprintf(out, "\tr_addend: %jd\n", (intmax_t)addend);
954 elf_print_rel(Elf32_Ehdr *e, void *sh)
965 offset = elf_get_off(e, sh, SH_OFFSET);
966 entsize = elf_get_size(e, sh, SH_ENTSIZE);
967 size = elf_get_size(e, sh, SH_SIZE);
968 name = elf_get_word(e, sh, SH_NAME);
969 v = (char *)e + offset;
970 fprintf(out, "\nrelocation (%s):\n", shstrtab + name);
971 for (i = 0; (u_int64_t)i < size / entsize; i++) {
972 r = (char *)v + i * entsize;
973 offset = elf_get_addr(e, r, R_OFFSET);
974 info = elf_get_word(e, r, R_INFO);
976 fprintf(out, "entry: %d\n", i);
977 fprintf(out, "\tr_offset: %#jx\n", offset);
978 fprintf(out, "\tr_info: %jd\n", (intmax_t)info);
983 elf_print_interp(Elf32_Ehdr *e, void *p)
988 offset = elf_get_off(e, p, P_OFFSET);
989 s = (char *)e + offset;
990 fprintf(out, "\ninterp:\n");
991 fprintf(out, "\t%s\n", s);
995 elf_print_got(Elf32_Ehdr *e, void *sh)
1004 offset = elf_get_off(e, sh, SH_OFFSET);
1005 addralign = elf_get_size(e, sh, SH_ADDRALIGN);
1006 size = elf_get_size(e, sh, SH_SIZE);
1007 v = (char *)e + offset;
1008 fprintf(out, "\nglobal offset table:\n");
1009 for (i = 0; (u_int64_t)i < size / addralign; i++) {
1010 addr = elf_get_addr(e, (char *)v + i * addralign, 0);
1012 fprintf(out, "entry: %d\n", i);
1013 fprintf(out, "\t%#jx\n", addr);
1018 elf_print_hash(Elf32_Ehdr *e __unused, void *sh __unused)
1023 elf_print_note(Elf32_Ehdr *e, void *sh)
1033 offset = elf_get_off(e, sh, SH_OFFSET);
1034 size = elf_get_size(e, sh, SH_SIZE);
1035 name = elf_get_word(e, sh, SH_NAME);
1036 n = (char *)e + offset;
1037 fprintf(out, "\nnote (%s):\n", shstrtab + name);
1038 while (n < ((char *)e + offset + size)) {
1039 namesz = elf_get_word(e, n, N_NAMESZ);
1040 descsz = elf_get_word(e, n, N_DESCSZ);
1041 s = n + sizeof(Elf_Note);
1042 desc = elf_get_word(e, n + sizeof(Elf_Note) + namesz, 0);
1043 fprintf(out, "\t%s %d\n", s, desc);
1044 n += sizeof(Elf_Note) + namesz + descsz;
1049 elf_get_byte(Elf32_Ehdr *e, void *base, elf_member_t member)
1054 switch (e->e_ident[EI_CLASS]) {
1056 val = ((uint8_t *)base)[elf32_offsets[member]];
1059 val = ((uint8_t *)base)[elf64_offsets[member]];
1062 errx(1, "invalid class");
1069 elf_get_quarter(Elf32_Ehdr *e, void *base, elf_member_t member)
1074 switch (e->e_ident[EI_CLASS]) {
1076 base = (char *)base + elf32_offsets[member];
1077 switch (e->e_ident[EI_DATA]) {
1079 val = be16dec(base);
1082 val = le16dec(base);
1085 errx(1, "invalid data format");
1089 base = (char *)base + elf64_offsets[member];
1090 switch (e->e_ident[EI_DATA]) {
1092 val = be16dec(base);
1095 val = le16dec(base);
1098 errx(1, "invalid data format");
1102 errx(1, "invalid class");
1110 elf_get_half(Elf32_Ehdr *e, void *base, elf_member_t member)
1115 switch (e->e_ident[EI_CLASS]) {
1117 base = (char *)base + elf32_offsets[member];
1118 switch (e->e_ident[EI_DATA]) {
1120 val = be16dec(base);
1123 val = le16dec(base);
1126 errx(1, "invalid data format");
1130 base = (char *)base + elf64_offsets[member];
1131 switch (e->e_ident[EI_DATA]) {
1133 val = be32dec(base);
1136 val = le32dec(base);
1139 errx(1, "invalid data format");
1143 errx(1, "invalid class");
1151 elf_get_word(Elf32_Ehdr *e, void *base, elf_member_t member)
1156 switch (e->e_ident[EI_CLASS]) {
1158 base = (char *)base + elf32_offsets[member];
1159 switch (e->e_ident[EI_DATA]) {
1161 val = be32dec(base);
1164 val = le32dec(base);
1167 errx(1, "invalid data format");
1171 base = (char *)base + elf64_offsets[member];
1172 switch (e->e_ident[EI_DATA]) {
1174 val = be32dec(base);
1177 val = le32dec(base);
1180 errx(1, "invalid data format");
1184 errx(1, "invalid class");
1191 elf_get_quad(Elf32_Ehdr *e, void *base, elf_member_t member)
1196 switch (e->e_ident[EI_CLASS]) {
1198 base = (char *)base + elf32_offsets[member];
1199 switch (e->e_ident[EI_DATA]) {
1201 val = be32dec(base);
1204 val = le32dec(base);
1207 errx(1, "invalid data format");
1211 base = (char *)base + elf64_offsets[member];
1212 switch (e->e_ident[EI_DATA]) {
1214 val = be64dec(base);
1217 val = le64dec(base);
1220 errx(1, "invalid data format");
1224 errx(1, "invalid class");
1233 fprintf(stderr, "usage: elfdump -a | -cdeGhinprs [-w file] file\n");