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Diffstat (limited to 'usr.bin/elfdump/elfdump.c')
-rw-r--r--usr.bin/elfdump/elfdump.c1287
1 files changed, 1287 insertions, 0 deletions
diff --git a/usr.bin/elfdump/elfdump.c b/usr.bin/elfdump/elfdump.c
new file mode 100644
index 000000000000..49704cde1b08
--- /dev/null
+++ b/usr.bin/elfdump/elfdump.c
@@ -0,0 +1,1287 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2003 David O'Brien. All rights reserved.
+ * Copyright (c) 2001 Jake Burkholder
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/types.h>
+
+#include <sys/capsicum.h>
+#include <sys/elf32.h>
+#include <sys/elf64.h>
+#include <sys/endian.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <capsicum_helpers.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define ED_DYN (1<<0)
+#define ED_EHDR (1<<1)
+#define ED_GOT (1<<2)
+#define ED_HASH (1<<3)
+#define ED_INTERP (1<<4)
+#define ED_NOTE (1<<5)
+#define ED_PHDR (1<<6)
+#define ED_REL (1<<7)
+#define ED_SHDR (1<<8)
+#define ED_SYMTAB (1<<9)
+#define ED_ALL ((1<<10)-1)
+#define ED_IS_ELF (1<<10) /* Exclusive with other flags */
+
+#define elf_get_addr elf_get_quad
+#define elf_get_off elf_get_quad
+#define elf_get_size elf_get_quad
+
+enum elf_member {
+ D_TAG = 1, D_PTR, D_VAL,
+
+ E_CLASS, E_DATA, E_OSABI, E_TYPE, E_MACHINE, E_VERSION, E_ENTRY,
+ E_PHOFF, E_SHOFF, E_FLAGS, E_EHSIZE, E_PHENTSIZE, E_PHNUM, E_SHENTSIZE,
+ E_SHNUM, E_SHSTRNDX,
+
+ N_NAMESZ, N_DESCSZ, N_TYPE,
+
+ P_TYPE, P_OFFSET, P_VADDR, P_PADDR, P_FILESZ, P_MEMSZ, P_FLAGS,
+ P_ALIGN,
+
+ SH_NAME, SH_TYPE, SH_FLAGS, SH_ADDR, SH_OFFSET, SH_SIZE, SH_LINK,
+ SH_INFO, SH_ADDRALIGN, SH_ENTSIZE,
+
+ ST_NAME, ST_VALUE, ST_SIZE, ST_INFO, ST_SHNDX,
+
+ R_OFFSET, R_INFO,
+
+ RA_OFFSET, RA_INFO, RA_ADDEND
+};
+
+typedef enum elf_member elf_member_t;
+
+static int elf32_offsets[] = {
+ 0,
+
+ offsetof(Elf32_Dyn, d_tag), offsetof(Elf32_Dyn, d_un.d_ptr),
+ offsetof(Elf32_Dyn, d_un.d_val),
+
+ offsetof(Elf32_Ehdr, e_ident[EI_CLASS]),
+ offsetof(Elf32_Ehdr, e_ident[EI_DATA]),
+ offsetof(Elf32_Ehdr, e_ident[EI_OSABI]),
+ offsetof(Elf32_Ehdr, e_type), offsetof(Elf32_Ehdr, e_machine),
+ offsetof(Elf32_Ehdr, e_version), offsetof(Elf32_Ehdr, e_entry),
+ offsetof(Elf32_Ehdr, e_phoff), offsetof(Elf32_Ehdr, e_shoff),
+ offsetof(Elf32_Ehdr, e_flags), offsetof(Elf32_Ehdr, e_ehsize),
+ offsetof(Elf32_Ehdr, e_phentsize), offsetof(Elf32_Ehdr, e_phnum),
+ offsetof(Elf32_Ehdr, e_shentsize), offsetof(Elf32_Ehdr, e_shnum),
+ offsetof(Elf32_Ehdr, e_shstrndx),
+
+ offsetof(Elf_Note, n_namesz), offsetof(Elf_Note, n_descsz),
+ offsetof(Elf_Note, n_type),
+
+ offsetof(Elf32_Phdr, p_type), offsetof(Elf32_Phdr, p_offset),
+ offsetof(Elf32_Phdr, p_vaddr), offsetof(Elf32_Phdr, p_paddr),
+ offsetof(Elf32_Phdr, p_filesz), offsetof(Elf32_Phdr, p_memsz),
+ offsetof(Elf32_Phdr, p_flags), offsetof(Elf32_Phdr, p_align),
+
+ offsetof(Elf32_Shdr, sh_name), offsetof(Elf32_Shdr, sh_type),
+ offsetof(Elf32_Shdr, sh_flags), offsetof(Elf32_Shdr, sh_addr),
+ offsetof(Elf32_Shdr, sh_offset), offsetof(Elf32_Shdr, sh_size),
+ offsetof(Elf32_Shdr, sh_link), offsetof(Elf32_Shdr, sh_info),
+ offsetof(Elf32_Shdr, sh_addralign), offsetof(Elf32_Shdr, sh_entsize),
+
+ offsetof(Elf32_Sym, st_name), offsetof(Elf32_Sym, st_value),
+ offsetof(Elf32_Sym, st_size), offsetof(Elf32_Sym, st_info),
+ offsetof(Elf32_Sym, st_shndx),
+
+ offsetof(Elf32_Rel, r_offset), offsetof(Elf32_Rel, r_info),
+
+ offsetof(Elf32_Rela, r_offset), offsetof(Elf32_Rela, r_info),
+ offsetof(Elf32_Rela, r_addend)
+};
+
+static int elf64_offsets[] = {
+ 0,
+
+ offsetof(Elf64_Dyn, d_tag), offsetof(Elf64_Dyn, d_un.d_ptr),
+ offsetof(Elf64_Dyn, d_un.d_val),
+
+ offsetof(Elf32_Ehdr, e_ident[EI_CLASS]),
+ offsetof(Elf32_Ehdr, e_ident[EI_DATA]),
+ offsetof(Elf32_Ehdr, e_ident[EI_OSABI]),
+ offsetof(Elf64_Ehdr, e_type), offsetof(Elf64_Ehdr, e_machine),
+ offsetof(Elf64_Ehdr, e_version), offsetof(Elf64_Ehdr, e_entry),
+ offsetof(Elf64_Ehdr, e_phoff), offsetof(Elf64_Ehdr, e_shoff),
+ offsetof(Elf64_Ehdr, e_flags), offsetof(Elf64_Ehdr, e_ehsize),
+ offsetof(Elf64_Ehdr, e_phentsize), offsetof(Elf64_Ehdr, e_phnum),
+ offsetof(Elf64_Ehdr, e_shentsize), offsetof(Elf64_Ehdr, e_shnum),
+ offsetof(Elf64_Ehdr, e_shstrndx),
+
+ offsetof(Elf_Note, n_namesz), offsetof(Elf_Note, n_descsz),
+ offsetof(Elf_Note, n_type),
+
+ offsetof(Elf64_Phdr, p_type), offsetof(Elf64_Phdr, p_offset),
+ offsetof(Elf64_Phdr, p_vaddr), offsetof(Elf64_Phdr, p_paddr),
+ offsetof(Elf64_Phdr, p_filesz), offsetof(Elf64_Phdr, p_memsz),
+ offsetof(Elf64_Phdr, p_flags), offsetof(Elf64_Phdr, p_align),
+
+ offsetof(Elf64_Shdr, sh_name), offsetof(Elf64_Shdr, sh_type),
+ offsetof(Elf64_Shdr, sh_flags), offsetof(Elf64_Shdr, sh_addr),
+ offsetof(Elf64_Shdr, sh_offset), offsetof(Elf64_Shdr, sh_size),
+ offsetof(Elf64_Shdr, sh_link), offsetof(Elf64_Shdr, sh_info),
+ offsetof(Elf64_Shdr, sh_addralign), offsetof(Elf64_Shdr, sh_entsize),
+
+ offsetof(Elf64_Sym, st_name), offsetof(Elf64_Sym, st_value),
+ offsetof(Elf64_Sym, st_size), offsetof(Elf64_Sym, st_info),
+ offsetof(Elf64_Sym, st_shndx),
+
+ offsetof(Elf64_Rel, r_offset), offsetof(Elf64_Rel, r_info),
+
+ offsetof(Elf64_Rela, r_offset), offsetof(Elf64_Rela, r_info),
+ offsetof(Elf64_Rela, r_addend)
+};
+
+/* http://www.sco.com/developers/gabi/latest/ch5.dynamic.html#tag_encodings */
+static const char *
+d_tags(u_int64_t tag)
+{
+ static char unknown_tag[48];
+
+ switch (tag) {
+ case DT_NULL: return "DT_NULL";
+ case DT_NEEDED: return "DT_NEEDED";
+ case DT_PLTRELSZ: return "DT_PLTRELSZ";
+ case DT_PLTGOT: return "DT_PLTGOT";
+ case DT_HASH: return "DT_HASH";
+ case DT_STRTAB: return "DT_STRTAB";
+ case DT_SYMTAB: return "DT_SYMTAB";
+ case DT_RELA: return "DT_RELA";
+ case DT_RELASZ: return "DT_RELASZ";
+ case DT_RELAENT: return "DT_RELAENT";
+ case DT_STRSZ: return "DT_STRSZ";
+ case DT_SYMENT: return "DT_SYMENT";
+ case DT_INIT: return "DT_INIT";
+ case DT_FINI: return "DT_FINI";
+ case DT_SONAME: return "DT_SONAME";
+ case DT_RPATH: return "DT_RPATH";
+ case DT_SYMBOLIC: return "DT_SYMBOLIC";
+ case DT_REL: return "DT_REL";
+ case DT_RELSZ: return "DT_RELSZ";
+ case DT_RELENT: return "DT_RELENT";
+ case DT_PLTREL: return "DT_PLTREL";
+ case DT_DEBUG: return "DT_DEBUG";
+ case DT_TEXTREL: return "DT_TEXTREL";
+ case DT_JMPREL: return "DT_JMPREL";
+ case DT_BIND_NOW: return "DT_BIND_NOW";
+ case DT_INIT_ARRAY: return "DT_INIT_ARRAY";
+ case DT_FINI_ARRAY: return "DT_FINI_ARRAY";
+ case DT_INIT_ARRAYSZ: return "DT_INIT_ARRAYSZ";
+ case DT_FINI_ARRAYSZ: return "DT_FINI_ARRAYSZ";
+ case DT_RUNPATH: return "DT_RUNPATH";
+ case DT_FLAGS: return "DT_FLAGS";
+ case DT_PREINIT_ARRAY: return "DT_PREINIT_ARRAY"; /* XXX DT_ENCODING */
+ case DT_PREINIT_ARRAYSZ:return "DT_PREINIT_ARRAYSZ";
+ /* 0x6000000D - 0x6ffff000 operating system-specific semantics */
+ case 0x6ffffdf5: return "DT_GNU_PRELINKED";
+ case 0x6ffffdf6: return "DT_GNU_CONFLICTSZ";
+ case 0x6ffffdf7: return "DT_GNU_LIBLISTSZ";
+ case 0x6ffffdf8: return "DT_SUNW_CHECKSUM";
+ case DT_PLTPADSZ: return "DT_PLTPADSZ";
+ case DT_MOVEENT: return "DT_MOVEENT";
+ case DT_MOVESZ: return "DT_MOVESZ";
+ case DT_FEATURE: return "DT_FEATURE";
+ case DT_POSFLAG_1: return "DT_POSFLAG_1";
+ case DT_SYMINSZ: return "DT_SYMINSZ";
+ case DT_SYMINENT : return "DT_SYMINENT (DT_VALRNGHI)";
+ case DT_ADDRRNGLO: return "DT_ADDRRNGLO";
+ case DT_GNU_HASH: return "DT_GNU_HASH";
+ case 0x6ffffef8: return "DT_GNU_CONFLICT";
+ case 0x6ffffef9: return "DT_GNU_LIBLIST";
+ case DT_CONFIG: return "DT_CONFIG";
+ case DT_DEPAUDIT: return "DT_DEPAUDIT";
+ case DT_AUDIT: return "DT_AUDIT";
+ case DT_PLTPAD: return "DT_PLTPAD";
+ case DT_MOVETAB: return "DT_MOVETAB";
+ case DT_SYMINFO : return "DT_SYMINFO (DT_ADDRRNGHI)";
+ case DT_RELACOUNT: return "DT_RELACOUNT";
+ case DT_RELCOUNT: return "DT_RELCOUNT";
+ case DT_FLAGS_1: return "DT_FLAGS_1";
+ case DT_VERDEF: return "DT_VERDEF";
+ case DT_VERDEFNUM: return "DT_VERDEFNUM";
+ case DT_VERNEED: return "DT_VERNEED";
+ case DT_VERNEEDNUM: return "DT_VERNEEDNUM";
+ case 0x6ffffff0: return "DT_GNU_VERSYM";
+ /* 0x70000000 - 0x7fffffff processor-specific semantics */
+ case 0x70000000: return "DT_IA_64_PLT_RESERVE";
+ case DT_AUXILIARY: return "DT_AUXILIARY";
+ case DT_USED: return "DT_USED";
+ case DT_FILTER: return "DT_FILTER";
+ }
+ snprintf(unknown_tag, sizeof(unknown_tag),
+ "ERROR: TAG NOT DEFINED -- tag 0x%jx", (uintmax_t)tag);
+ return (unknown_tag);
+}
+
+static const char *
+e_machines(u_int mach)
+{
+ static char machdesc[64];
+
+ switch (mach) {
+ case EM_NONE: return "EM_NONE";
+ case EM_M32: return "EM_M32";
+ case EM_SPARC: return "EM_SPARC";
+ case EM_386: return "EM_386";
+ case EM_68K: return "EM_68K";
+ case EM_88K: return "EM_88K";
+ case EM_IAMCU: return "EM_IAMCU";
+ case EM_860: return "EM_860";
+ case EM_MIPS: return "EM_MIPS";
+ case EM_PPC: return "EM_PPC";
+ case EM_PPC64: return "EM_PPC64";
+ case EM_ARM: return "EM_ARM";
+ case EM_ALPHA: return "EM_ALPHA (legacy)";
+ case EM_SPARCV9:return "EM_SPARCV9";
+ case EM_IA_64: return "EM_IA_64";
+ case EM_X86_64: return "EM_X86_64";
+ case EM_AARCH64:return "EM_AARCH64";
+ case EM_RISCV: return "EM_RISCV";
+ }
+ snprintf(machdesc, sizeof(machdesc),
+ "(unknown machine) -- type 0x%x", mach);
+ return (machdesc);
+}
+
+static const char *e_types[] = {
+ "ET_NONE", "ET_REL", "ET_EXEC", "ET_DYN", "ET_CORE"
+};
+
+static const char *ei_versions[] = {
+ "EV_NONE", "EV_CURRENT"
+};
+
+static const char *ei_classes[] = {
+ "ELFCLASSNONE", "ELFCLASS32", "ELFCLASS64"
+};
+
+static const char *ei_data[] = {
+ "ELFDATANONE", "ELFDATA2LSB", "ELFDATA2MSB"
+};
+
+static const char *ei_abis[256] = {
+ "ELFOSABI_NONE", "ELFOSABI_HPUX", "ELFOSABI_NETBSD", "ELFOSABI_LINUX",
+ "ELFOSABI_HURD", "ELFOSABI_86OPEN", "ELFOSABI_SOLARIS", "ELFOSABI_AIX",
+ "ELFOSABI_IRIX", "ELFOSABI_FREEBSD", "ELFOSABI_TRU64",
+ "ELFOSABI_MODESTO", "ELFOSABI_OPENBSD",
+ [255] = "ELFOSABI_STANDALONE"
+};
+
+static const char *p_types[] = {
+ "PT_NULL", "PT_LOAD", "PT_DYNAMIC", "PT_INTERP", "PT_NOTE",
+ "PT_SHLIB", "PT_PHDR", "PT_TLS"
+};
+
+static const char *p_flags[] = {
+ "", "PF_X", "PF_W", "PF_X|PF_W", "PF_R", "PF_X|PF_R", "PF_W|PF_R",
+ "PF_X|PF_W|PF_R"
+};
+
+#define NT_ELEM(x) [x] = #x,
+static const char *nt_types[] = {
+ "",
+ NT_ELEM(NT_FREEBSD_ABI_TAG)
+ NT_ELEM(NT_FREEBSD_NOINIT_TAG)
+ NT_ELEM(NT_FREEBSD_ARCH_TAG)
+ NT_ELEM(NT_FREEBSD_FEATURE_CTL)
+};
+
+/* http://www.sco.com/developers/gabi/latest/ch4.sheader.html#sh_type */
+static const char *
+sh_types(uint64_t machine, uint64_t sht) {
+ static char unknown_buf[64];
+
+ if (sht < 0x60000000) {
+ switch (sht) {
+ case SHT_NULL: return "SHT_NULL";
+ case SHT_PROGBITS: return "SHT_PROGBITS";
+ case SHT_SYMTAB: return "SHT_SYMTAB";
+ case SHT_STRTAB: return "SHT_STRTAB";
+ case SHT_RELA: return "SHT_RELA";
+ case SHT_HASH: return "SHT_HASH";
+ case SHT_DYNAMIC: return "SHT_DYNAMIC";
+ case SHT_NOTE: return "SHT_NOTE";
+ case SHT_NOBITS: return "SHT_NOBITS";
+ case SHT_REL: return "SHT_REL";
+ case SHT_SHLIB: return "SHT_SHLIB";
+ case SHT_DYNSYM: return "SHT_DYNSYM";
+ case SHT_INIT_ARRAY: return "SHT_INIT_ARRAY";
+ case SHT_FINI_ARRAY: return "SHT_FINI_ARRAY";
+ case SHT_PREINIT_ARRAY: return "SHT_PREINIT_ARRAY";
+ case SHT_GROUP: return "SHT_GROUP";
+ case SHT_SYMTAB_SHNDX: return "SHT_SYMTAB_SHNDX";
+ }
+ snprintf(unknown_buf, sizeof(unknown_buf),
+ "ERROR: SHT %ju NOT DEFINED", (uintmax_t)sht);
+ return (unknown_buf);
+ } else if (sht < 0x70000000) {
+ /* 0x60000000-0x6fffffff operating system-specific semantics */
+ switch (sht) {
+ case 0x6ffffff0: return "XXX:VERSYM";
+ case SHT_SUNW_dof: return "SHT_SUNW_dof";
+ case SHT_GNU_HASH: return "SHT_GNU_HASH";
+ case 0x6ffffff7: return "SHT_GNU_LIBLIST";
+ case 0x6ffffffc: return "XXX:VERDEF";
+ case SHT_SUNW_verdef: return "SHT_SUNW(GNU)_verdef";
+ case SHT_SUNW_verneed: return "SHT_SUNW(GNU)_verneed";
+ case SHT_SUNW_versym: return "SHT_SUNW(GNU)_versym";
+ }
+ snprintf(unknown_buf, sizeof(unknown_buf),
+ "ERROR: OS-SPECIFIC SHT 0x%jx NOT DEFINED",
+ (uintmax_t)sht);
+ return (unknown_buf);
+ } else if (sht < 0x80000000) {
+ /* 0x70000000-0x7fffffff processor-specific semantics */
+ switch (machine) {
+ case EM_ARM:
+ switch (sht) {
+ case SHT_ARM_EXIDX: return "SHT_ARM_EXIDX";
+ case SHT_ARM_PREEMPTMAP:return "SHT_ARM_PREEMPTMAP";
+ case SHT_ARM_ATTRIBUTES:return "SHT_ARM_ATTRIBUTES";
+ case SHT_ARM_DEBUGOVERLAY:
+ return "SHT_ARM_DEBUGOVERLAY";
+ case SHT_ARM_OVERLAYSECTION:
+ return "SHT_ARM_OVERLAYSECTION";
+ }
+ break;
+ case EM_IA_64:
+ switch (sht) {
+ case 0x70000000: return "SHT_IA_64_EXT";
+ case 0x70000001: return "SHT_IA_64_UNWIND";
+ }
+ break;
+ case EM_MIPS:
+ switch (sht) {
+ case SHT_MIPS_REGINFO: return "SHT_MIPS_REGINFO";
+ case SHT_MIPS_OPTIONS: return "SHT_MIPS_OPTIONS";
+ case SHT_MIPS_ABIFLAGS: return "SHT_MIPS_ABIFLAGS";
+ }
+ break;
+ }
+ switch (sht) {
+ case 0x7ffffffd: return "XXX:AUXILIARY";
+ case 0x7fffffff: return "XXX:FILTER";
+ }
+ snprintf(unknown_buf, sizeof(unknown_buf),
+ "ERROR: PROCESSOR-SPECIFIC SHT 0x%jx NOT DEFINED",
+ (uintmax_t)sht);
+ return (unknown_buf);
+ } else {
+ /* 0x80000000-0xffffffff application programs */
+ snprintf(unknown_buf, sizeof(unknown_buf),
+ "ERROR: SHT 0x%jx NOT DEFINED",
+ (uintmax_t)sht);
+ return (unknown_buf);
+ }
+}
+
+static const char *sh_flags[] = {
+ "", "SHF_WRITE", "SHF_ALLOC", "SHF_WRITE|SHF_ALLOC", "SHF_EXECINSTR",
+ "SHF_WRITE|SHF_EXECINSTR", "SHF_ALLOC|SHF_EXECINSTR",
+ "SHF_WRITE|SHF_ALLOC|SHF_EXECINSTR"
+};
+
+static const char *
+st_type(unsigned int mach, unsigned int type)
+{
+ static char s_type[32];
+
+ switch (type) {
+ case STT_NOTYPE: return "STT_NOTYPE";
+ case STT_OBJECT: return "STT_OBJECT";
+ case STT_FUNC: return "STT_FUNC";
+ case STT_SECTION: return "STT_SECTION";
+ case STT_FILE: return "STT_FILE";
+ case STT_COMMON: return "STT_COMMON";
+ case STT_TLS: return "STT_TLS";
+ case 13:
+ if (mach == EM_SPARCV9)
+ return "STT_SPARC_REGISTER";
+ break;
+ }
+ snprintf(s_type, sizeof(s_type), "<unknown: %#x>", type);
+ return (s_type);
+}
+
+static const char *st_bindings[] = {
+ "STB_LOCAL", "STB_GLOBAL", "STB_WEAK"
+};
+
+static char *dynstr;
+static char *shstrtab;
+static char *strtab;
+static FILE *out;
+
+static u_int64_t elf_get_byte(Elf32_Ehdr *e, void *base, elf_member_t member);
+static u_int64_t elf_get_quarter(Elf32_Ehdr *e, void *base,
+ elf_member_t member);
+#if 0
+static u_int64_t elf_get_half(Elf32_Ehdr *e, void *base, elf_member_t member);
+#endif
+static u_int64_t elf_get_word(Elf32_Ehdr *e, void *base, elf_member_t member);
+static u_int64_t elf_get_quad(Elf32_Ehdr *e, void *base, elf_member_t member);
+
+static void elf_print_ehdr(Elf32_Ehdr *e, void *sh);
+static void elf_print_phdr(Elf32_Ehdr *e, void *p);
+static void elf_print_shdr(Elf32_Ehdr *e, void *sh);
+static void elf_print_symtab(Elf32_Ehdr *e, void *sh, char *str);
+static void elf_print_dynamic(Elf32_Ehdr *e, void *sh);
+static void elf_print_rel(Elf32_Ehdr *e, void *r);
+static void elf_print_rela(Elf32_Ehdr *e, void *ra);
+static void elf_print_interp(Elf32_Ehdr *e, void *p);
+static void elf_print_got(Elf32_Ehdr *e, void *sh);
+static void elf_print_hash(Elf32_Ehdr *e, void *sh);
+static void elf_print_note(Elf32_Ehdr *e, void *sh);
+
+static void usage(void) __dead2;
+
+/*
+ * Helpers for ELF files with shnum or shstrndx values that don't fit in the
+ * ELF header. If the values are too large then an escape value is used to
+ * indicate that the actual value is found in one of section 0's fields.
+ */
+static uint64_t
+elf_get_shnum(Elf32_Ehdr *e, void *sh)
+{
+ uint64_t shnum;
+
+ shnum = elf_get_quarter(e, e, E_SHNUM);
+ if (shnum == 0)
+ shnum = elf_get_word(e, (char *)sh, SH_SIZE);
+ return shnum;
+}
+
+static uint64_t
+elf_get_shstrndx(Elf32_Ehdr *e, void *sh)
+{
+ uint64_t shstrndx;
+
+ shstrndx = elf_get_quarter(e, e, E_SHSTRNDX);
+ if (shstrndx == SHN_XINDEX)
+ shstrndx = elf_get_word(e, (char *)sh, SH_LINK);
+ return shstrndx;
+}
+
+int
+main(int ac, char **av)
+{
+ cap_rights_t rights;
+ u_int64_t phoff;
+ u_int64_t shoff;
+ u_int64_t phentsize;
+ u_int64_t phnum;
+ u_int64_t shentsize;
+ u_int64_t shnum;
+ u_int64_t shstrndx;
+ u_int64_t offset;
+ u_int64_t name;
+ u_int64_t type;
+ struct stat sb;
+ u_int flags;
+ Elf32_Ehdr *e;
+ void *p;
+ void *sh;
+ void *v;
+ int fd;
+ int ch;
+ int i;
+
+ out = stdout;
+ flags = 0;
+ while ((ch = getopt(ac, av, "acdEeiGhnprsw:")) != -1)
+ switch (ch) {
+ case 'a':
+ flags = ED_ALL;
+ break;
+ case 'c':
+ flags |= ED_SHDR;
+ break;
+ case 'd':
+ flags |= ED_DYN;
+ break;
+ case 'E':
+ flags = ED_IS_ELF;
+ break;
+ case 'e':
+ flags |= ED_EHDR;
+ break;
+ case 'i':
+ flags |= ED_INTERP;
+ break;
+ case 'G':
+ flags |= ED_GOT;
+ break;
+ case 'h':
+ flags |= ED_HASH;
+ break;
+ case 'n':
+ flags |= ED_NOTE;
+ break;
+ case 'p':
+ flags |= ED_PHDR;
+ break;
+ case 'r':
+ flags |= ED_REL;
+ break;
+ case 's':
+ flags |= ED_SYMTAB;
+ break;
+ case 'w':
+ if ((out = fopen(optarg, "w")) == NULL)
+ err(1, "%s", optarg);
+ cap_rights_init(&rights, CAP_FSTAT, CAP_WRITE);
+ if (caph_rights_limit(fileno(out), &rights) < 0)
+ err(1, "unable to limit rights for %s", optarg);
+ break;
+ case '?':
+ default:
+ usage();
+ }
+ ac -= optind;
+ av += optind;
+ if (ac == 0 || flags == 0 || ((flags & ED_IS_ELF) &&
+ (ac != 1 || (flags & ~ED_IS_ELF) || out != stdout)))
+ usage();
+ if ((fd = open(*av, O_RDONLY)) < 0 ||
+ fstat(fd, &sb) < 0)
+ err(1, "%s", *av);
+ if ((size_t)sb.st_size < sizeof(Elf32_Ehdr)) {
+ if (flags & ED_IS_ELF)
+ exit(1);
+ errx(1, "not an elf file");
+ }
+ cap_rights_init(&rights, CAP_MMAP_R);
+ if (caph_rights_limit(fd, &rights) < 0)
+ err(1, "unable to limit rights for %s", *av);
+ cap_rights_init(&rights);
+ if (caph_rights_limit(STDIN_FILENO, &rights) < 0 ||
+ caph_limit_stdout() < 0 || caph_limit_stderr() < 0) {
+ err(1, "unable to limit rights for stdio");
+ }
+ if (caph_enter() < 0)
+ err(1, "unable to enter capability mode");
+ e = mmap(NULL, sb.st_size, PROT_READ, MAP_SHARED, fd, 0);
+ if (e == MAP_FAILED)
+ err(1, NULL);
+ if (!IS_ELF(*e)) {
+ if (flags & ED_IS_ELF)
+ exit(1);
+ errx(1, "not an elf file");
+ } else if (flags & ED_IS_ELF)
+ exit (0);
+ phoff = elf_get_off(e, e, E_PHOFF);
+ shoff = elf_get_off(e, e, E_SHOFF);
+ phentsize = elf_get_quarter(e, e, E_PHENTSIZE);
+ phnum = elf_get_quarter(e, e, E_PHNUM);
+ shentsize = elf_get_quarter(e, e, E_SHENTSIZE);
+ p = (char *)e + phoff;
+ if (shoff > 0) {
+ sh = (char *)e + shoff;
+ shnum = elf_get_shnum(e, sh);
+ shstrndx = elf_get_shstrndx(e, sh);
+ offset = elf_get_off(e, (char *)sh + shstrndx * shentsize,
+ SH_OFFSET);
+ shstrtab = (char *)e + offset;
+ } else {
+ sh = NULL;
+ shnum = 0;
+ shstrndx = 0;
+ shstrtab = NULL;
+ }
+ for (i = 0; (u_int64_t)i < shnum; i++) {
+ name = elf_get_word(e, (char *)sh + i * shentsize, SH_NAME);
+ offset = elf_get_off(e, (char *)sh + i * shentsize, SH_OFFSET);
+ if (strcmp(shstrtab + name, ".strtab") == 0)
+ strtab = (char *)e + offset;
+ if (strcmp(shstrtab + name, ".dynstr") == 0)
+ dynstr = (char *)e + offset;
+ }
+ if (flags & ED_EHDR)
+ elf_print_ehdr(e, sh);
+ if (flags & ED_PHDR)
+ elf_print_phdr(e, p);
+ if (flags & ED_SHDR)
+ elf_print_shdr(e, sh);
+ for (i = 0; (u_int64_t)i < phnum; i++) {
+ v = (char *)p + i * phentsize;
+ type = elf_get_word(e, v, P_TYPE);
+ switch (type) {
+ case PT_INTERP:
+ if (flags & ED_INTERP)
+ elf_print_interp(e, v);
+ break;
+ case PT_NULL:
+ case PT_LOAD:
+ case PT_DYNAMIC:
+ case PT_NOTE:
+ case PT_SHLIB:
+ case PT_PHDR:
+ break;
+ }
+ }
+ for (i = 0; (u_int64_t)i < shnum; i++) {
+ v = (char *)sh + i * shentsize;
+ type = elf_get_word(e, v, SH_TYPE);
+ switch (type) {
+ case SHT_SYMTAB:
+ if (flags & ED_SYMTAB)
+ elf_print_symtab(e, v, strtab);
+ break;
+ case SHT_DYNAMIC:
+ if (flags & ED_DYN)
+ elf_print_dynamic(e, v);
+ break;
+ case SHT_RELA:
+ if (flags & ED_REL)
+ elf_print_rela(e, v);
+ break;
+ case SHT_REL:
+ if (flags & ED_REL)
+ elf_print_rel(e, v);
+ break;
+ case SHT_NOTE:
+ name = elf_get_word(e, v, SH_NAME);
+ if (flags & ED_NOTE &&
+ strcmp(shstrtab + name, ".note.tag") == 0)
+ elf_print_note(e, v);
+ break;
+ case SHT_DYNSYM:
+ if (flags & ED_SYMTAB)
+ elf_print_symtab(e, v, dynstr);
+ break;
+ case SHT_PROGBITS:
+ name = elf_get_word(e, v, SH_NAME);
+ if (flags & ED_GOT &&
+ strcmp(shstrtab + name, ".got") == 0)
+ elf_print_got(e, v);
+ break;
+ case SHT_HASH:
+ if (flags & ED_HASH)
+ elf_print_hash(e, v);
+ break;
+ case SHT_NULL:
+ case SHT_STRTAB:
+ case SHT_NOBITS:
+ case SHT_SHLIB:
+ break;
+ }
+ }
+
+ return 0;
+}
+
+static void
+elf_print_ehdr(Elf32_Ehdr *e, void *sh)
+{
+ u_int64_t class;
+ u_int64_t data;
+ u_int64_t osabi;
+ u_int64_t type;
+ u_int64_t machine;
+ u_int64_t version;
+ u_int64_t entry;
+ u_int64_t phoff;
+ u_int64_t shoff;
+ u_int64_t flags;
+ u_int64_t ehsize;
+ u_int64_t phentsize;
+ u_int64_t phnum;
+ u_int64_t shentsize;
+ u_int64_t shnum;
+ u_int64_t shstrndx;
+
+ class = elf_get_byte(e, e, E_CLASS);
+ data = elf_get_byte(e, e, E_DATA);
+ osabi = elf_get_byte(e, e, E_OSABI);
+ type = elf_get_quarter(e, e, E_TYPE);
+ machine = elf_get_quarter(e, e, E_MACHINE);
+ version = elf_get_word(e, e, E_VERSION);
+ entry = elf_get_addr(e, e, E_ENTRY);
+ phoff = elf_get_off(e, e, E_PHOFF);
+ shoff = elf_get_off(e, e, E_SHOFF);
+ flags = elf_get_word(e, e, E_FLAGS);
+ ehsize = elf_get_quarter(e, e, E_EHSIZE);
+ phentsize = elf_get_quarter(e, e, E_PHENTSIZE);
+ phnum = elf_get_quarter(e, e, E_PHNUM);
+ shentsize = elf_get_quarter(e, e, E_SHENTSIZE);
+ fprintf(out, "\nelf header:\n");
+ fprintf(out, "\n");
+ fprintf(out, "\te_ident: %s %s %s\n", ei_classes[class], ei_data[data],
+ ei_abis[osabi]);
+ fprintf(out, "\te_type: %s\n", e_types[type]);
+ fprintf(out, "\te_machine: %s\n", e_machines(machine));
+ fprintf(out, "\te_version: %s\n", ei_versions[version]);
+ fprintf(out, "\te_entry: %#jx\n", (intmax_t)entry);
+ fprintf(out, "\te_phoff: %jd\n", (intmax_t)phoff);
+ fprintf(out, "\te_shoff: %jd\n", (intmax_t)shoff);
+ fprintf(out, "\te_flags: %jd\n", (intmax_t)flags);
+ fprintf(out, "\te_ehsize: %jd\n", (intmax_t)ehsize);
+ fprintf(out, "\te_phentsize: %jd\n", (intmax_t)phentsize);
+ fprintf(out, "\te_phnum: %jd\n", (intmax_t)phnum);
+ fprintf(out, "\te_shentsize: %jd\n", (intmax_t)shentsize);
+ if (sh != NULL) {
+ shnum = elf_get_shnum(e, sh);
+ shstrndx = elf_get_shstrndx(e, sh);
+ fprintf(out, "\te_shnum: %jd\n", (intmax_t)shnum);
+ fprintf(out, "\te_shstrndx: %jd\n", (intmax_t)shstrndx);
+ }
+}
+
+static void
+elf_print_phdr(Elf32_Ehdr *e, void *p)
+{
+ u_int64_t phentsize;
+ u_int64_t phnum;
+ u_int64_t type;
+ u_int64_t offset;
+ u_int64_t vaddr;
+ u_int64_t paddr;
+ u_int64_t filesz;
+ u_int64_t memsz;
+ u_int64_t flags;
+ u_int64_t align;
+ void *v;
+ int i;
+
+ phentsize = elf_get_quarter(e, e, E_PHENTSIZE);
+ phnum = elf_get_quarter(e, e, E_PHNUM);
+ fprintf(out, "\nprogram header:\n");
+ for (i = 0; (u_int64_t)i < phnum; i++) {
+ v = (char *)p + i * phentsize;
+ type = elf_get_word(e, v, P_TYPE);
+ offset = elf_get_off(e, v, P_OFFSET);
+ vaddr = elf_get_addr(e, v, P_VADDR);
+ paddr = elf_get_addr(e, v, P_PADDR);
+ filesz = elf_get_size(e, v, P_FILESZ);
+ memsz = elf_get_size(e, v, P_MEMSZ);
+ flags = elf_get_word(e, v, P_FLAGS);
+ align = elf_get_size(e, v, P_ALIGN);
+ fprintf(out, "\n");
+ fprintf(out, "entry: %d\n", i);
+ fprintf(out, "\tp_type: %s\n", p_types[type & 0x7]);
+ fprintf(out, "\tp_offset: %jd\n", (intmax_t)offset);
+ fprintf(out, "\tp_vaddr: %#jx\n", (intmax_t)vaddr);
+ fprintf(out, "\tp_paddr: %#jx\n", (intmax_t)paddr);
+ fprintf(out, "\tp_filesz: %jd\n", (intmax_t)filesz);
+ fprintf(out, "\tp_memsz: %jd\n", (intmax_t)memsz);
+ fprintf(out, "\tp_flags: %s\n", p_flags[flags]);
+ fprintf(out, "\tp_align: %jd\n", (intmax_t)align);
+ }
+}
+
+static void
+elf_print_shdr(Elf32_Ehdr *e, void *sh)
+{
+ u_int64_t shentsize;
+ u_int64_t shnum;
+ u_int64_t name;
+ u_int64_t type;
+ u_int64_t flags;
+ u_int64_t addr;
+ u_int64_t offset;
+ u_int64_t size;
+ u_int64_t shlink;
+ u_int64_t info;
+ u_int64_t addralign;
+ u_int64_t entsize;
+ u_int64_t machine;
+ void *v;
+ int i;
+
+ if (sh == NULL) {
+ fprintf(out, "\nNo section headers\n");
+ return;
+ }
+
+ machine = elf_get_quarter(e, e, E_MACHINE);
+ shentsize = elf_get_quarter(e, e, E_SHENTSIZE);
+ shnum = elf_get_shnum(e, sh);
+ fprintf(out, "\nsection header:\n");
+ for (i = 0; (u_int64_t)i < shnum; i++) {
+ v = (char *)sh + i * shentsize;
+ name = elf_get_word(e, v, SH_NAME);
+ type = elf_get_word(e, v, SH_TYPE);
+ flags = elf_get_word(e, v, SH_FLAGS);
+ addr = elf_get_addr(e, v, SH_ADDR);
+ offset = elf_get_off(e, v, SH_OFFSET);
+ size = elf_get_size(e, v, SH_SIZE);
+ shlink = elf_get_word(e, v, SH_LINK);
+ info = elf_get_word(e, v, SH_INFO);
+ addralign = elf_get_size(e, v, SH_ADDRALIGN);
+ entsize = elf_get_size(e, v, SH_ENTSIZE);
+ fprintf(out, "\n");
+ fprintf(out, "entry: %d\n", i);
+ fprintf(out, "\tsh_name: %s\n", shstrtab + name);
+ fprintf(out, "\tsh_type: %s\n", sh_types(machine, type));
+ fprintf(out, "\tsh_flags: %s\n", sh_flags[flags & 0x7]);
+ fprintf(out, "\tsh_addr: %#jx\n", addr);
+ fprintf(out, "\tsh_offset: %jd\n", (intmax_t)offset);
+ fprintf(out, "\tsh_size: %jd\n", (intmax_t)size);
+ fprintf(out, "\tsh_link: %jd\n", (intmax_t)shlink);
+ fprintf(out, "\tsh_info: %jd\n", (intmax_t)info);
+ fprintf(out, "\tsh_addralign: %jd\n", (intmax_t)addralign);
+ fprintf(out, "\tsh_entsize: %jd\n", (intmax_t)entsize);
+ }
+}
+
+static void
+elf_print_symtab(Elf32_Ehdr *e, void *sh, char *str)
+{
+ u_int64_t machine;
+ u_int64_t offset;
+ u_int64_t entsize;
+ u_int64_t size;
+ u_int64_t name;
+ u_int64_t value;
+ u_int64_t info;
+ u_int64_t shndx;
+ void *st;
+ int len;
+ int i;
+
+ machine = elf_get_quarter(e, e, E_MACHINE);
+ offset = elf_get_off(e, sh, SH_OFFSET);
+ entsize = elf_get_size(e, sh, SH_ENTSIZE);
+ size = elf_get_size(e, sh, SH_SIZE);
+ name = elf_get_word(e, sh, SH_NAME);
+ len = size / entsize;
+ fprintf(out, "\nsymbol table (%s):\n", shstrtab + name);
+ for (i = 0; i < len; i++) {
+ st = (char *)e + offset + i * entsize;
+ name = elf_get_word(e, st, ST_NAME);
+ value = elf_get_addr(e, st, ST_VALUE);
+ size = elf_get_size(e, st, ST_SIZE);
+ info = elf_get_byte(e, st, ST_INFO);
+ shndx = elf_get_quarter(e, st, ST_SHNDX);
+ fprintf(out, "\n");
+ fprintf(out, "entry: %d\n", i);
+ fprintf(out, "\tst_name: %s\n", str + name);
+ fprintf(out, "\tst_value: %#jx\n", value);
+ fprintf(out, "\tst_size: %jd\n", (intmax_t)size);
+ fprintf(out, "\tst_info: %s %s\n",
+ st_type(machine, ELF32_ST_TYPE(info)),
+ st_bindings[ELF32_ST_BIND(info)]);
+ fprintf(out, "\tst_shndx: %jd\n", (intmax_t)shndx);
+ }
+}
+
+static void
+elf_print_dynamic(Elf32_Ehdr *e, void *sh)
+{
+ u_int64_t offset;
+ u_int64_t entsize;
+ u_int64_t size;
+ int64_t tag;
+ u_int64_t ptr;
+ u_int64_t val;
+ void *d;
+ int i;
+
+ offset = elf_get_off(e, sh, SH_OFFSET);
+ entsize = elf_get_size(e, sh, SH_ENTSIZE);
+ size = elf_get_size(e, sh, SH_SIZE);
+ fprintf(out, "\ndynamic:\n");
+ for (i = 0; (u_int64_t)i < size / entsize; i++) {
+ d = (char *)e + offset + i * entsize;
+ tag = elf_get_size(e, d, D_TAG);
+ ptr = elf_get_size(e, d, D_PTR);
+ val = elf_get_addr(e, d, D_VAL);
+ fprintf(out, "\n");
+ fprintf(out, "entry: %d\n", i);
+ fprintf(out, "\td_tag: %s\n", d_tags(tag));
+ switch (tag) {
+ case DT_NEEDED:
+ case DT_SONAME:
+ case DT_RPATH:
+ fprintf(out, "\td_val: %s\n", dynstr + val);
+ break;
+ case DT_PLTRELSZ:
+ case DT_RELA:
+ case DT_RELASZ:
+ case DT_RELAENT:
+ case DT_STRSZ:
+ case DT_SYMENT:
+ case DT_RELSZ:
+ case DT_RELENT:
+ case DT_PLTREL:
+ fprintf(out, "\td_val: %jd\n", (intmax_t)val);
+ break;
+ case DT_PLTGOT:
+ case DT_HASH:
+ case DT_STRTAB:
+ case DT_SYMTAB:
+ case DT_INIT:
+ case DT_FINI:
+ case DT_REL:
+ case DT_JMPREL:
+ fprintf(out, "\td_ptr: %#jx\n", ptr);
+ break;
+ case DT_NULL:
+ case DT_SYMBOLIC:
+ case DT_DEBUG:
+ case DT_TEXTREL:
+ break;
+ }
+ }
+}
+
+static void
+elf_print_rela(Elf32_Ehdr *e, void *sh)
+{
+ u_int64_t offset;
+ u_int64_t entsize;
+ u_int64_t size;
+ u_int64_t name;
+ u_int64_t info;
+ int64_t addend;
+ void *ra;
+ void *v;
+ int i;
+
+ offset = elf_get_off(e, sh, SH_OFFSET);
+ entsize = elf_get_size(e, sh, SH_ENTSIZE);
+ size = elf_get_size(e, sh, SH_SIZE);
+ name = elf_get_word(e, sh, SH_NAME);
+ v = (char *)e + offset;
+ fprintf(out, "\nrelocation with addend (%s):\n", shstrtab + name);
+ for (i = 0; (u_int64_t)i < size / entsize; i++) {
+ ra = (char *)v + i * entsize;
+ offset = elf_get_addr(e, ra, RA_OFFSET);
+ info = elf_get_word(e, ra, RA_INFO);
+ addend = elf_get_off(e, ra, RA_ADDEND);
+ fprintf(out, "\n");
+ fprintf(out, "entry: %d\n", i);
+ fprintf(out, "\tr_offset: %#jx\n", offset);
+ fprintf(out, "\tr_info: %jd\n", (intmax_t)info);
+ fprintf(out, "\tr_addend: %jd\n", (intmax_t)addend);
+ }
+}
+
+static void
+elf_print_rel(Elf32_Ehdr *e, void *sh)
+{
+ u_int64_t offset;
+ u_int64_t entsize;
+ u_int64_t size;
+ u_int64_t name;
+ u_int64_t info;
+ void *r;
+ void *v;
+ int i;
+
+ offset = elf_get_off(e, sh, SH_OFFSET);
+ entsize = elf_get_size(e, sh, SH_ENTSIZE);
+ size = elf_get_size(e, sh, SH_SIZE);
+ name = elf_get_word(e, sh, SH_NAME);
+ v = (char *)e + offset;
+ fprintf(out, "\nrelocation (%s):\n", shstrtab + name);
+ for (i = 0; (u_int64_t)i < size / entsize; i++) {
+ r = (char *)v + i * entsize;
+ offset = elf_get_addr(e, r, R_OFFSET);
+ info = elf_get_word(e, r, R_INFO);
+ fprintf(out, "\n");
+ fprintf(out, "entry: %d\n", i);
+ fprintf(out, "\tr_offset: %#jx\n", offset);
+ fprintf(out, "\tr_info: %jd\n", (intmax_t)info);
+ }
+}
+
+static void
+elf_print_interp(Elf32_Ehdr *e, void *p)
+{
+ u_int64_t offset;
+ char *s;
+
+ offset = elf_get_off(e, p, P_OFFSET);
+ s = (char *)e + offset;
+ fprintf(out, "\ninterp:\n");
+ fprintf(out, "\t%s\n", s);
+}
+
+static void
+elf_print_got(Elf32_Ehdr *e, void *sh)
+{
+ u_int64_t offset;
+ u_int64_t addralign;
+ u_int64_t size;
+ u_int64_t addr;
+ void *v;
+ int i;
+
+ offset = elf_get_off(e, sh, SH_OFFSET);
+ addralign = elf_get_size(e, sh, SH_ADDRALIGN);
+ size = elf_get_size(e, sh, SH_SIZE);
+ v = (char *)e + offset;
+ fprintf(out, "\nglobal offset table:\n");
+ for (i = 0; (u_int64_t)i < size / addralign; i++) {
+ addr = elf_get_addr(e, (char *)v + i * addralign, 0);
+ fprintf(out, "\n");
+ fprintf(out, "entry: %d\n", i);
+ fprintf(out, "\t%#jx\n", addr);
+ }
+}
+
+static void
+elf_print_hash(Elf32_Ehdr *e __unused, void *sh __unused)
+{
+}
+
+static void
+elf_print_note(Elf32_Ehdr *e, void *sh)
+{
+ u_int64_t offset;
+ u_int64_t size;
+ u_int64_t name;
+ u_int32_t namesz;
+ u_int32_t descsz;
+ u_int32_t desc;
+ u_int32_t type;
+ char *n, *s;
+ const char *nt_type;
+
+ offset = elf_get_off(e, sh, SH_OFFSET);
+ size = elf_get_size(e, sh, SH_SIZE);
+ name = elf_get_word(e, sh, SH_NAME);
+ n = (char *)e + offset;
+ fprintf(out, "\nnote (%s):\n", shstrtab + name);
+ while (n < ((char *)e + offset + size)) {
+ namesz = elf_get_word(e, n, N_NAMESZ);
+ descsz = elf_get_word(e, n, N_DESCSZ);
+ type = elf_get_word(e, n, N_TYPE);
+ if (type < nitems(nt_types) && nt_types[type] != NULL)
+ nt_type = nt_types[type];
+ else
+ nt_type = "Unknown type";
+ s = n + sizeof(Elf_Note);
+ desc = elf_get_word(e, n + sizeof(Elf_Note) + namesz, 0);
+ fprintf(out, "\t%s %d (%s)\n", s, desc, nt_type);
+ n += sizeof(Elf_Note) + namesz + descsz;
+ }
+}
+
+static u_int64_t
+elf_get_byte(Elf32_Ehdr *e, void *base, elf_member_t member)
+{
+ u_int64_t val;
+
+ val = 0;
+ switch (e->e_ident[EI_CLASS]) {
+ case ELFCLASS32:
+ val = ((uint8_t *)base)[elf32_offsets[member]];
+ break;
+ case ELFCLASS64:
+ val = ((uint8_t *)base)[elf64_offsets[member]];
+ break;
+ case ELFCLASSNONE:
+ errx(1, "invalid class");
+ }
+
+ return val;
+}
+
+static u_int64_t
+elf_get_quarter(Elf32_Ehdr *e, void *base, elf_member_t member)
+{
+ u_int64_t val;
+
+ val = 0;
+ switch (e->e_ident[EI_CLASS]) {
+ case ELFCLASS32:
+ base = (char *)base + elf32_offsets[member];
+ switch (e->e_ident[EI_DATA]) {
+ case ELFDATA2MSB:
+ val = be16dec(base);
+ break;
+ case ELFDATA2LSB:
+ val = le16dec(base);
+ break;
+ case ELFDATANONE:
+ errx(1, "invalid data format");
+ }
+ break;
+ case ELFCLASS64:
+ base = (char *)base + elf64_offsets[member];
+ switch (e->e_ident[EI_DATA]) {
+ case ELFDATA2MSB:
+ val = be16dec(base);
+ break;
+ case ELFDATA2LSB:
+ val = le16dec(base);
+ break;
+ case ELFDATANONE:
+ errx(1, "invalid data format");
+ }
+ break;
+ case ELFCLASSNONE:
+ errx(1, "invalid class");
+ }
+
+ return val;
+}
+
+#if 0
+static u_int64_t
+elf_get_half(Elf32_Ehdr *e, void *base, elf_member_t member)
+{
+ u_int64_t val;
+
+ val = 0;
+ switch (e->e_ident[EI_CLASS]) {
+ case ELFCLASS32:
+ base = (char *)base + elf32_offsets[member];
+ switch (e->e_ident[EI_DATA]) {
+ case ELFDATA2MSB:
+ val = be16dec(base);
+ break;
+ case ELFDATA2LSB:
+ val = le16dec(base);
+ break;
+ case ELFDATANONE:
+ errx(1, "invalid data format");
+ }
+ break;
+ case ELFCLASS64:
+ base = (char *)base + elf64_offsets[member];
+ switch (e->e_ident[EI_DATA]) {
+ case ELFDATA2MSB:
+ val = be32dec(base);
+ break;
+ case ELFDATA2LSB:
+ val = le32dec(base);
+ break;
+ case ELFDATANONE:
+ errx(1, "invalid data format");
+ }
+ break;
+ case ELFCLASSNONE:
+ errx(1, "invalid class");
+ }
+
+ return val;
+}
+#endif
+
+static u_int64_t
+elf_get_word(Elf32_Ehdr *e, void *base, elf_member_t member)
+{
+ u_int64_t val;
+
+ val = 0;
+ switch (e->e_ident[EI_CLASS]) {
+ case ELFCLASS32:
+ base = (char *)base + elf32_offsets[member];
+ switch (e->e_ident[EI_DATA]) {
+ case ELFDATA2MSB:
+ val = be32dec(base);
+ break;
+ case ELFDATA2LSB:
+ val = le32dec(base);
+ break;
+ case ELFDATANONE:
+ errx(1, "invalid data format");
+ }
+ break;
+ case ELFCLASS64:
+ base = (char *)base + elf64_offsets[member];
+ switch (e->e_ident[EI_DATA]) {
+ case ELFDATA2MSB:
+ val = be32dec(base);
+ break;
+ case ELFDATA2LSB:
+ val = le32dec(base);
+ break;
+ case ELFDATANONE:
+ errx(1, "invalid data format");
+ }
+ break;
+ case ELFCLASSNONE:
+ errx(1, "invalid class");
+ }
+
+ return val;
+}
+
+static u_int64_t
+elf_get_quad(Elf32_Ehdr *e, void *base, elf_member_t member)
+{
+ u_int64_t val;
+
+ val = 0;
+ switch (e->e_ident[EI_CLASS]) {
+ case ELFCLASS32:
+ base = (char *)base + elf32_offsets[member];
+ switch (e->e_ident[EI_DATA]) {
+ case ELFDATA2MSB:
+ val = be32dec(base);
+ break;
+ case ELFDATA2LSB:
+ val = le32dec(base);
+ break;
+ case ELFDATANONE:
+ errx(1, "invalid data format");
+ }
+ break;
+ case ELFCLASS64:
+ base = (char *)base + elf64_offsets[member];
+ switch (e->e_ident[EI_DATA]) {
+ case ELFDATA2MSB:
+ val = be64dec(base);
+ break;
+ case ELFDATA2LSB:
+ val = le64dec(base);
+ break;
+ case ELFDATANONE:
+ errx(1, "invalid data format");
+ }
+ break;
+ case ELFCLASSNONE:
+ errx(1, "invalid class");
+ }
+
+ return val;
+}
+
+static void
+usage(void)
+{
+ fprintf(stderr,
+ "usage: elfdump -a | -E | -cdeGhinprs [-w file] file\n");
+ exit(1);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-08 17:46:20 +0000