externals: Update zydis to 4.0.0

Merge commit '6fa8d51479'

externals/zydis/tests/binary_writer.py

@@ -0,0 +1,46 @@
+#!/usr/bin/env python3
+from struct import pack
+
+
+class BinaryWriter(object):
+
+    def __init__(self):
+        self.data = b''
+
+    def _write_internal(self, fmt, val):
+        self.data += pack(fmt, val)
+        return self
+
+    def write_uint8(self, val):
+        return self._write_internal('<B', val)
+
+    def write_uint16(self, val):
+        return self._write_internal('<H', val)
+
+    def write_uint32(self, val):
+        return self._write_internal('<L', val)
+
+    def write_uint64(self, val):
+        return self._write_internal('<Q', val)
+
+    def write_int8(self, val):
+        return self._write_internal('<b', val)
+
+    def write_int16(self, val):
+        return self._write_internal('<h', val)
+
+    def write_int32(self, val):
+        return self._write_internal('<l', val)
+
+    def write_int64(self, val):
+        return self._write_internal('<q', val)
+
+    def write_bytes(self, data):
+        self.data += bytes(data)
+        return self
+
+    def write_padding(self, size, padding_byte=b'\x00'):
+        self.write_bytes(padding_byte * size)
+
+    def get_data(self):
+        return self.data