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