#include <stdint.h>
typedef uint64_t elf64_addr;
typedef uint64_t elf64_off;
typedef uint16_t elf64_half;
typedef uint32_t elf64_word;
typedef int32_t elf64_sword;
typedef uint64_t elf64_xword;
typedef int64_t elf64_sxword;

# define ELFMAG0	0x7F // e_ident[EI_MAG0]
# define ELFMAG1	'E'  // e_ident[EI_MAG1]
# define ELFMAG2	'L'  // e_ident[EI_MAG2]
# define ELFMAG3	'F'  // e_ident[EI_MAG3]

typedef struct elf64_ehdr {
    uint8_t e_ident[16];
    elf64_half e_type;
    elf64_half e_machine;
    elf64_word e_version;
    elf64_addr e_entry;
    elf64_off e_phoff;
    elf64_off e_shoff;
    elf64_word e_flags;
    elf64_half e_ehsize;
    elf64_half e_phentsize;
    elf64_half e_phnum;
    elf64_half e_shentsize;
    elf64_half e_shnum;
    elf64_half e_shstrndx; 
}__attribute((packed))elf64_ehdr;

enum e_ident{
	EI_MAG0		= 0, // 0x7F
	EI_MAG1		= 1, // 'E'
	EI_MAG2		= 2, // 'L'
	EI_MAG3		= 3, // 'F'
	EI_CLASS	= 4, // Architecture (32/64)
	EI_DATA		= 5, // Byte Order
	EI_VERSION	= 6, // ELF Version
	EI_OSABI	= 7, // OS Specific
	EI_ABIVERSION	= 8, // OS Specific
	EI_PAD		= 9  // Padding
};