xv6/elf.h

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#define ELF_MAGIC 0x464C457FU /* "\x7FELF" in little endian */
struct Elf {
uint32_t magic; // must equal ELF_MAGIC
uint8_t elf[12];
uint16_t type;
uint16_t machine;
uint32_t version;
uint32_t entry;
uint32_t phoff;
uint32_t shoff;
uint32_t flags;
uint16_t ehsize;
uint16_t phentsize;
uint16_t phnum;
uint16_t shentsize;
uint16_t shnum;
uint16_t shstrndx;
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};
struct Proghdr {
uint32_t type;
uint32_t offset;
uint32_t va;
uint32_t pa;
uint32_t filesz;
uint32_t memsz;
uint32_t flags;
uint32_t align;
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};
// Values for Proghdr type
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#define ELF_PROG_LOAD 1
// Flag bits for Proghdr flags
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#define ELF_PROG_FLAG_EXEC 1
#define ELF_PROG_FLAG_WRITE 2
#define ELF_PROG_FLAG_READ 4