1 /*
2  * Copyright (C) 2016 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #include <shared/abort.h>
18 
19 #include <cstdint>
20 
21 #include <chre.h>
22 
23 namespace nanoapp_testing {
24 
abort(AbortBlame reason)25 void abort(AbortBlame reason) {
26   uint32_t abortCode = UINT32_C(0x10000) + static_cast<uint16_t>(reason);
27   chreAbort(abortCode);
28 
29   // We should never get here.  But in the case that the CHRE has a bug
30   // in its chreAbort() implementation, let's try to blow things up.
31   // Some compilers are smart about not wanting to crash like this, so
32   // we need to fool them via indirection.
33   uint16_t zero = static_cast<uint16_t>(reason)
34       - static_cast<uint8_t>(reason);
35   uint8_t *badPointer = reinterpret_cast<uint8_t*>(zero);
36   *badPointer = 1;
37 
38   // If we're here, we have a buggy CHRE on a platform where it's okay
39   // to write to nullptr.  At the very least, let's not return from this
40   // function.
41   while (true) {}
42 }
43 
44 }  // namespace nanoapp_testing
45