diff --git a/runtime/utils.cc b/runtime/utils.cc
index 4d49809..f966fbd 100644
--- a/runtime/utils.cc
+++ b/runtime/utils.cc
@@ -1354,4 +1354,29 @@
   return true;
 }
 
+void EncodeUnsignedLeb128(uint32_t data, std::vector<uint8_t>* dst) {
+  size_t encoded_size = UnsignedLeb128Size(data);
+  size_t cur_index = dst->size();
+  dst->resize(dst->size() + encoded_size);
+  uint8_t* write_pos = &((*dst)[cur_index]);
+  uint8_t* write_pos_after = EncodeUnsignedLeb128(write_pos, data);
+  DCHECK_EQ(static_cast<size_t>(write_pos_after - write_pos), encoded_size);
+}
+
+void EncodeSignedLeb128(int32_t data, std::vector<uint8_t>* dst) {
+  size_t encoded_size = SignedLeb128Size(data);
+  size_t cur_index = dst->size();
+  dst->resize(dst->size() + encoded_size);
+  uint8_t* write_pos = &((*dst)[cur_index]);
+  uint8_t* write_pos_after = EncodeSignedLeb128(write_pos, data);
+  DCHECK_EQ(static_cast<size_t>(write_pos_after - write_pos), encoded_size);
+}
+
+void PushWord(std::vector<uint8_t>* buf, int data) {
+  buf->push_back(data & 0xff);
+  buf->push_back((data >> 8) & 0xff);
+  buf->push_back((data >> 16) & 0xff);
+  buf->push_back((data >> 24) & 0xff);
+}
+
 }  // namespace art