xv6/elf.h

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//
// format of an ELF executable file
//
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#define ELF_MAGIC 0x464C457FU // "\x7FELF" in little endian
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struct elfhdr {
uint magic; // must equal ELF_MAGIC
uchar elf[12];
ushort type;
ushort machine;
uint version;
uint entry;
uint phoff;
uint shoff;
uint flags;
ushort ehsize;
ushort phentsize;
ushort phnum;
ushort shentsize;
ushort shnum;
ushort shstrndx;
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};
struct proghdr {
uint type;
uint offset;
uint va;
uint pa;
uint filesz;
uint memsz;
uint flags;
uint align;
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};
// Values for Proghdr type
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#define ELF_PROG_LOAD 1
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// 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
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