1 // Licensed to the Apache Software Foundation (ASF) under one
2 // or more contributor license agreements.  See the NOTICE file
3 // distributed with this work for additional information
4 // regarding copyright ownership.  The ASF licenses this file
5 // to you under the Apache License, Version 2.0 (the
6 // "License"); you may not use this file except in compliance
7 // with the License.  You may obtain a copy of the License at
8 //
9 //   http://www.apache.org/licenses/LICENSE-2.0
10 //
11 // Unless required by applicable law or agreed to in writing,
12 // software distributed under the License is distributed on an
13 // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
14 // KIND, either express or implied.  See the License for the
15 // specific language governing permissions and limitations
16 // under the License.
17 
18 use optee_utee_sys as raw;
19 use core::ffi::*;
20 use core::fmt::{Arguments, Write, Result};
21 
22 pub struct Trace;
23 
24 impl Trace {
new() -> Self25     fn new() -> Self {
26         Trace {}
27     }
28 
_print(fmt: Arguments)29     pub fn _print(fmt: Arguments) {
30         let mut writer = Trace::new();
31         let result = writer.write_fmt(fmt);
32 
33         if let Err(e) = result {
34             panic!("failed printing to trace: {}", e);
35         }
36     }
37 
set_level(level: i32)38     pub fn set_level(level: i32) {
39         unsafe {
40             raw::trace_set_level(level);
41         }
42     }
43 
get_level() -> i3244     pub fn get_level() -> i32 {
45         unsafe { raw::trace_get_level() }
46     }
47 }
48 
49 impl Write for Trace {
write_str(&mut self, buf: &str) -> Result<>50     fn write_str(&mut self, buf: &str) -> Result<> {
51         unsafe {
52             raw::_utee_log(buf.as_ptr() as *const c_void, buf.len());
53         }
54         Ok(())
55     }
56 }
57