samplecode/project_template/enclave/src/lib.rs

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// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
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// to you under the Apache License, Version 2.0 (the
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// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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#![crate_name = "sample"]
#![crate_type = "staticlib"]
#![cfg_attr(not(target_env = "sgx"), no_std)]
#![cfg_attr(target_env = "sgx", feature(rustc_private))]

extern crate sgx_types;
#[cfg(not(target_env = "sgx"))]
#[macro_use]
extern crate sgx_tstd as std;

use sgx_types::*;
use std::io::{self, Write};
use std::slice;

#[no_mangle]
pub extern "C" fn ecall_test(some_string: *const u8, some_len: usize) -> sgx_status_t {
    let str_slice = unsafe { slice::from_raw_parts(some_string, some_len) };
    let _ = io::stdout().write(str_slice);

    println!("Message from the enclave");

    sgx_status_t::SGX_SUCCESS
}