Mbed OS Reference | fault_functions.h Source File

 /* Copyright (c) 2017-2018 ARM Limited
  *
  * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *     http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 
 #ifndef __MBED_HAL_SPM_FAULT_FUNCTIONS__
 #define __MBED_HAL_SPM_FAULT_FUNCTIONS__
 
 #include "cmsis_compiler.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 // Retruns the value of the LR register
 // Used to determine which stack the exception happend in
 __STATIC_FORCEINLINE uint32_t __get_LR(void);
 
 // This function is required as we need a symbol/address
 // to jump to from fault handler.
 void do_nothing(void);
 
 // Test exception handler
 static void hard_fault_handler_test();
 
 // Using naked function as it will not be executed from beginning to the end.
 // The execution flow expected to be interrupted by exception and we will
 // return to other function.
 // compiler will not produce prolog and epilog code for naked function
 // and thus will preserve stack in un-corrupted state
 __attribute__((naked)) void call_mem(uint32_t addr);
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif // __MBED_HAL_SPM_FAULT_FUNCTIONS__

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