diff --git a/include/mc_inst.h b/include/mc_inst.h
index cde97d6..8dce4aa 100644
--- a/include/mc_inst.h
+++ b/include/mc_inst.h
@@ -207,9 +207,11 @@ public:
 
 class MCModule {
 public:
+  std::string file_name;
   std::list<sptr(MFunction)> function_list;
   std::list<sptr(GlobalVar)> global_list;
   void IR2MC(const Module &ir_module);
+  void MC2ASM(std::ostream& ostr);
 };
 
 class MInstBinary : public MInst {
diff --git a/src/main.cpp b/src/main.cpp
index 0411bf7..fe7a20f 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -128,6 +128,7 @@ int main(int argc, const char **argv) {
   // std::cout << tree->toStringTree(&parser) << std::endl << std::endl;
 
   MCModule mc_module;
+  mc_module.file_name = source_file;
   mc_module.IR2MC(visitor.module);
   std::vector<sptr(MCPass)> mc_passes = {std::make_shared<PassRegAlloc>()};
   for (auto pass : mc_passes) {
diff --git a/src/mc_asmgen.cpp b/src/mc_asmgen.cpp
index 0d2ecb6..8387a69 100644
--- a/src/mc_asmgen.cpp
+++ b/src/mc_asmgen.cpp
@@ -1,3 +1,15 @@
 #include "mc_inst.h"
 #include "common.h"
 
+namespace CompSysY {
+
+
+void MCModule::MC2ASM(std::ostream &ostr) {
+  // header, specifying align and arch
+  ostr << "\t.text\n" << "\t.attribute\t4,\t16\n"
+        << "\t.attribute\t5\t\"rv64i2p0_m2p0_f2p0_d2p0\"\n";
+  ostr << "\t.file\t\"" << this->file_name << "\"\n" << std::endl;
+  
+}
+
+}
\ No newline at end of file