1 /*
2  * Copyright (C) 2023 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 "chre/util/nanoapp/log.h"
18 #include "chre_api/chre/re.h"
19 #include "chre_api/chre/toolchain.h"
20 
21 /**
22  * @file
23  * Stack check support.
24  *
25  * The symbols defined in this file are needed when the code is compiled with
26  * the -fstack-protector flag.
27  */
28 
29 #ifndef LOG_TAG
30 #define LOG_TAG "[STACK CHECK]"
31 #endif  // LOG_TAG
32 
33 #ifdef __cplusplus
34 extern "C" {
35 #endif
36 
37 uintptr_t __stack_chk_guard = 0x56494342;
38 
39 // Terminate a function in case of stack overflow.
40 void __stack_chk_fail(void) CHRE_NO_RETURN;
__stack_chk_fail(void)41 void __stack_chk_fail(void) {
42   LOGE("Stack corruption detected");
43   chreAbort(/*abortCode=*/0);
44 }
45 
46 #ifdef __cplusplus
47 }
48 #endif