elf.h

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Format of an ELF executable file

#define ELF_MAGIC 0x464C457FU

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File header

struct elfhdr {
  uint magic;
  uchar elf[12];
  ushort type;
  ushort machine;
  uint version;
  uint64 entry;
  uint64 phoff;
  uint64 shoff;
  uint flags;
  ushort ehsize;
  ushort phentsize;
  ushort phnum;
  ushort shentsize;
  ushort shnum;
  ushort shstrndx;
};

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Program section header

struct proghdr {
  uint32 type;
  uint32 flags;
  uint64 off;
  uint64 vaddr;
  uint64 paddr;
  uint64 filesz;
  uint64 memsz;
  uint64 align;
};

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Values for Proghdr type

#define ELF_PROG_LOAD           1

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Flag bits for Proghdr flags

#define ELF_PROG_FLAG_EXEC      1
#define ELF_PROG_FLAG_WRITE     2
#define ELF_PROG_FLAG_READ      4