[WIP] Update median to support floats

Author: Bingle

app/src/main.rs

@@ -33,7 +33,7 @@ extern "C" {
         retval: *mut sgx_status_t,
         binary: *const u8,
         binary_len: usize,
-        result_out: *mut i32,
+        result_out: *mut f32,
     ) -> sgx_status_t;
 }
 
@@ -72,7 +72,7 @@ fn main() {
 
     let binary = fs::read(WASM_FILE).unwrap();
 
-    let mut result_out = 0i32;
+    let mut result_out = 0f32;
 
     let result = unsafe {
         exec_wasm_test(

enclave/Cargo.lock

@@ -13,6 +13,7 @@ default = []
 [dependencies]
 wasmi-impl = { path = "../wasmi-impl" }
 wasmi = { version = "0.11.0", default-features = false }
+serde-json-wasm = "0.3.2"
 
 [target.'cfg(not(target_env = "sgx"))'.dependencies] # You can remove what you don't need, except types and tstd
 sgx_types = { git = "https://github.com/apache/teaclave-sgx-sdk.git" }

enclave/Cargo.toml

@@ -26,7 +26,7 @@ enclave {
     trusted
     {
         /* ECALLs */
-        public sgx_status_t exec_wasm_test([in, count=binary_len] const uint8_t* binary, size_t binary_len, [out] int32_t* result_out);
+        public sgx_status_t exec_wasm_test([in, count=binary_len] const uint8_t* binary, size_t binary_len, [out] float* result_out);
     };
     untrusted
     {

enclave/Enclave.edl

@@ -40,17 +40,17 @@ use std::slice;
 pub unsafe extern "C" fn exec_wasm_test(
     binary: *const u8,
     binary_len: usize,
-    result_out: *mut i32,
+    result_out: *mut f32,
 ) -> sgx_status_t {
     if binary.is_null() {
         return sgx_status_t::SGX_ERROR_INVALID_PARAMETER;
     }
     // Safety: SGX generated code will check that the pointer is valid.
     let binary_slice = unsafe { slice::from_raw_parts(binary, binary_len) };
-    let data = b"[1,2,3,4,5]";
+    let data = b"[1.24,2.0,3.4,4.7,5.5]";
     unsafe {
         *result_out = match wasmi_impl::exec_wasm_with_data(binary_slice, data) {
-            Ok(Some(wasmi::RuntimeValue::I32(ret))) => ret,
+            Ok(Some(wasmi::RuntimeValue::F32(ret))) => ret.to_float(),
             Ok(_) | Err(_) => return sgx_status_t::SGX_ERROR_UNEXPECTED,
         }
     };