--- a/src/impl/vm_impl.h	Fri Jan 24 14:54:09 2020 +0900
+++ b/src/impl/vm_impl.h	Fri Jan 24 15:22:44 2020 +0900
@@ -14,12 +14,14 @@
     uint a;
     int ret;
     char* mem;
+    char* uva;
 
     __code kpt_alloc_check_impl(Type* vm_impl, __code next(...));
     __code loaduvm_ptesize_check(Type* vm_impl, __code next(...));
     __code loaduvm_loop(Type* vm_impl, uint i, pte_t* pte, uint sz, __code next(...));
     __code allocuvm_check_newsz(Type* vm_impl, pde_t* pgdir, uint oldsz, uint newsz, __code next(...));
     __code allocuvm_loop(Type* vm_impl, pde_t* pgdir, uint oldsz, uint newsz, uint a, __code next(...));
+    __code clearpteu_check_ptevm_impl(Type* vm_impl, pde_t* pgdir, char* uva,  __code next(...));
     __code next(...);