1// Format of an ELF executable file
2
3#define ELF_MAGIC 0x464C457FU // "\x7FELF" in little endian
4
5// File header
6struct elfhdr {
7 uint magic; // must equal ELF_MAGIC
8 uchar elf[12];
9 ushort type;
10 ushort machine;
11 uint version;
12 uint entry;
13 uint phoff;
14 uint shoff;
15 uint flags;
16 ushort ehsize;
17 ushort phentsize;
18 ushort phnum;
19 ushort shentsize;
20 ushort shnum;
21 ushort shstrndx;
22};
23
24// Program section header
25struct proghdr {
26 uint type;
27 uint off;
28 uint vaddr;
29 uint paddr;
30 uint filesz;
31 uint memsz;
32 uint flags;
33 uint align;
34};
35
36// Values for Proghdr type
37#define ELF_PROG_LOAD 1
38
39// Flag bits for Proghdr flags
40#define ELF_PROG_FLAG_EXEC 1
41#define ELF_PROG_FLAG_WRITE 2
42#define ELF_PROG_FLAG_READ 4
43