typedef struct {
                   unsigned char  e_ident[EI_NIDENT];
                   uint16_t       e_type;
                   uint16_t       e_machine;
                   uint32_t       e_version;
                   ElfN_Addr      e_entry;
                   ElfN_Off       e_phoff;
                   ElfN_Off       e_shoff;
                   uint32_t       e_flags;
                   uint16_t       e_ehsize;
                   uint16_t       e_phentsize;
                   uint16_t       e_phnum;
                   uint16_t       e_shentsize;
                   uint16_t       e_shnum;
                   uint16_t       e_shstrndx;
           } ElfN_Ehdr;