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struct elf {
struct {
u8 ei_magic[4] | matches('\x7fELF') str;
enum {
CLASS_32 = 1,
CLASS_64
} u8 ei_class;
enum {
ENDIANESS_LE = 1,
ENDIANESS_BE
} u8 ei_data;
u8 ei_version;
enum {
OSABI_SYSTEM_V,
OSABI_HP_UX,
OSABI_NETBSD,
OSABI_LINUX,
OSABI_GNU_HURD,
OSABI_SOLARIS,
OSABI_AIX,
OSABI_IRIX,
OSABI_FREEBSD,
OSABI_TRU64,
OSABI_NOVELL_MODESTO,
OSABI_OPENBSD,
OSABI_OPENVMS,
OSABI_NONSTOP_KERNEL,
OSABI_AROS,
OSABI_FENIX_OS,
OSABI_CLOUD_ABI
} u8 ei_osabi;
u8 ei_abi_version;
u8 ei_pad[7] nul;
} e_ident;
struct program_header {
enum {
PT_NULL,
PT_LOAD,
PT_DYNAMIC,
PT_INTERP,
PT_NOTE,
PT_SHLIB,
PT_PHDR,
PT_LOOS,
PT_HIOS,
PT_LOPROC,
PT_HIPROC
} u32 p_type;
select (e_ident.ei_class) {
header.CLASS_32)
struct {
u32 p_offset hex;
u32 p_vaddr hex;
u32 p_paddr hex;
u32 p_filesz;
u32 p_memsz;
u32 p_flags hex;
u32 p_align;
} elf32;
header.CLASS_64)
struct {
u32 p_flags hex;
u64 p_offset hex;
u64 p_vaddr hex;
u64 p_paddr hex;
u64 p_filesz;
u64 p_memsz;
u64 p_align;
} elf64;
} arch;
};
struct section_header {
enum sh_flags {
SHF_WRITE = 0x1,
SHF_ALLOC = 0x2,
SHF_EXECINSTR = 0x4,
SHF_MERGE = 0x10,
SHF_STRINGS = 0x20,
SHF_INFO_LINK = 0x40,
SHF_LINK_ORDER = 0x80,
SHF_OS_NONCONFORMING = 0x100,
SHF_GROUP = 0x200,
SHF_TLS = 0x400,
SHF_MASKOS = 0x0ff00000,
SHF_MASKPROC = 0xf0000000,
SHF_ORDERED = 0x40000000,
SHF_EXCLUDE = 0x80000000
};
select (e_ident.ei_class) {
header.CLASS_32)
struct {
u32 sh_name hex;
enum sh_type {
SHT_NULL,
SHT_PROGBITS,
SHT_SYMTAB,
SHT_STRTAB,
SHT_RELA,
SHT_HASH,
SHT_DYNAMIC,
SHT_NOTE,
SHT_NOBITS,
SHT_REL,
SHT_SHLIB,
SHT_DYNSYM,
SHT_INIT_ARRAY,
SHT_FINI_ARRAY,
SHT_PREINIT_ARRAY,
SHT_GROUP,
SHT_SYMTAB_INDEX,
SHT_NUM,
SHT_LOOS = 0x60000000
} u32 sh_type;
enum sh_flags u32 sh_flags;
u32 sh_addr hex;
u32 sh_offset hex;
u32 sh_size;
u32 sh_link;
u32 sh_info;
u32 sh_addralign;
u32 sh_entsize;
} elf32;
header.CLASS_64)
struct {
enum sh_flags u64 sh_flags;
u64 sh_addr hex;
u64 sh_offset hex;
u64 sh_size;
u64 sh_addralign;
u64 sh_entsize;
} elf64;
} arch;
};
struct body {
enum {
ET_NONE,
ET_REL,
ET_EXEC,
ET_DYN,
ET_CORE,
ET_LOOS = 0xfe00,
ET_HIOS = 0xfeff,
ET_LOPROC = 0xff00,
ET_HIPROC = 0xffff
} u16 e_type hex;
enum {
MACHINE_NONE,
MACHINE_SPARC = 0x02,
MACHINE_X86 = 0x03,
MACHINE_MIPS = 0x08,
MACHINE_POWERPC = 0x14,
MACHINE_S390 = 0x16,
MACHINE_ARM = 0x28,
MACHINE_SUPERH = 0x2A,
MACHINE_IA_64 = 0x32,
MACHINE_X86_64 = 0x3E,
MACHINE_AARCH64 = 0xB7,
MACHINE_RISCV = 0xF3
} u16 e_machine hex;
u32 e_version;
select (e_ident.ei_class) {
header.CLASS_32)
struct {
u32 e_entry hex;
u32 e_phoff;
u32 e_shoff;
} elf32;
header.CLASS_64)
struct {
u64 e_entry hex;
u64 e_phoff;
u64 e_shoff;
} elf64;
} arch;
u32 e_flags hex;
u16 e_ehsz;
u16 e_phentsize;
u16 e_phnum;
u16 e_shentsize;
u16 e_shnum;
u16 e_shstrndx;
TODO
struct program_header e_ph[e_phnum:e_phentsize];
struct section_header e_sh[e_shnum:e_shentsize];
};
select (e_ident.ei_class) {
e_ident.ENDIANESS_LE) struct body le | endianess('le');
e_ident.ENDIANESS_BE) struct body be | endianess('be');
} body;
};
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