elfMachine function

int elfMachine(Uint8List bytes)

Returns the ELF e_machine field of a 64-bit little-endian ELF binary bytes.

Throws a FormatException if bytes is not a valid 64-bit little-endian ELF header.

Implementation

int elfMachine(Uint8List bytes) {
  const expectedPrefix = [0x7f, 0x45, 0x4c, 0x46, 2, 1];
  if (bytes.length < 64) {
    throw const FormatException('ELF binary is shorter than 64 bytes.');
  }
  for (var i = 0; i < expectedPrefix.length; i++) {
    if (bytes[i] != expectedPrefix[i]) {
      throw const FormatException('Not a 64-bit little-endian ELF binary.');
    }
  }
  return ByteData.sublistView(bytes).getUint16(18, Endian.little);
}