Implemented LOG. Closes #159

vm/stack.go

@@ -139,6 +139,18 @@ func (m *Memory) Get(offset, size int64) []byte {
 	return nil
 }
 
+func (self *Memory) Geti(offset, size int64) (cpy []byte) {
+	if len(self.store) > int(offset) {
+		s := int64(math.Min(float64(len(self.store)), float64(offset+size)))
+		cpy = make([]byte, size)
+		copy(cpy, self.store[offset:offset+s])
+
+		return
+	}
+
+	return
+}
+
 func (m *Memory) Len() int {
 	return len(m.store)
 }