diff --git a/rust-evmjit/src/lib.rs b/rust-evmjit/src/lib.rs
index 85d8317ba..b7742e5fb 100644
--- a/rust-evmjit/src/lib.rs
+++ b/rust-evmjit/src/lib.rs
@@ -10,14 +10,6 @@ pub struct JitI256 {
 	pub words: [u64; 4]
 }
 
-impl JitI256 {
-	pub fn new() -> JitI256 {
-		JitI256 {
-			words: [0; 4]
-		}
-	}
-}
-
 #[repr(C)]
 pub struct JitRuntimeData {
 	pub gas: i64,
@@ -38,31 +30,8 @@ pub struct JitRuntimeData {
 	pub code_hash: JitI256
 }
 
-impl JitRuntimeData {
-	pub fn new() -> JitRuntimeData {
-		JitRuntimeData { 
-			gas: 0,
-			gas_price: 0,
-			call_data: ptr::null(),
-			call_data_size: 0,
-			address: JitI256::new(),
-			caller: JitI256::new(),
-			origin: JitI256::new(),
-			call_value: JitI256::new(),
-			coinbase: JitI256::new(),
-			difficulty: JitI256::new(),
-			gas_limit: JitI256::new(),
-			number: 0,
-			timestamp: 0,
-			code: ptr::null(),
-			code_size: 0,
-			code_hash: JitI256::new()
-		}
-	}
-}
-
 #[repr(C)]
-#[derive(Debug)]
+#[derive(Debug, Eq, PartialEq)]
 pub enum JitReturnCode {
 	Stop = 0,
 	Return = 1,
@@ -74,22 +43,31 @@ pub enum JitReturnCode {
 	UnexpectedError = -111
 }
 
-#[derive(Copy, Clone)]
 pub enum JitContext {}
 
 #[link(name="evmjit")]
 extern "C" {
-	pub fn evmjit_create(data: JitRuntimeData, env: u8) -> JitContext;
-	pub fn evmjit_exec(context: JitContext) -> JitReturnCode;
-	pub fn evmjit_destroy(context: JitContext);
+	pub fn evmjit_create_runtime_data() -> *mut JitRuntimeData;
+	pub fn evmjit_destroy_runtime_data(data: *mut JitRuntimeData);
+
+	pub fn evmjit_create_context(data: *mut JitRuntimeData, env: u8) -> *mut JitContext;
+	pub fn evmjit_destroy_context(context: *mut JitContext);
+
+	pub fn evmjit_exec(context: *mut JitContext) -> JitReturnCode;
+
 }
 
 #[test]
 fn it_works() {
 	unsafe {
-		let context = evmjit_create(JitRuntimeData::new(), 0);
-		let _result = evmjit_exec(context);
-		evmjit_destroy(context);
+		let data = evmjit_create_runtime_data();
+		let context = evmjit_create_context(data, 0);
+
+		let code = evmjit_exec(context);
+		assert_eq!(code, JitReturnCode::Stop);
+
+		evmjit_destroy_runtime_data(data);
+		evmjit_destroy_context(context);
 	}
 }