88 lines
3.8 KiB
C
88 lines
3.8 KiB
C
/**
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* Copyright (c) 2015 - 2020, Nordic Semiconductor ASA
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form, except as embedded into a Nordic
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* Semiconductor ASA integrated circuit in a product or a software update for
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* such product, must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* 4. This software, with or without modification, must only be used with a
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* Nordic Semiconductor ASA integrated circuit.
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*
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* 5. Any software provided in binary form under this license must not be reverse
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* engineered, decompiled, modified and/or disassembled.
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*
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* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include "sdk_common.h"
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#if NRF_MODULE_ENABLED(HARDFAULT_HANDLER)
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#include <stdint.h>
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#include "compiler_abstraction.h"
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extern void HardFault_c_handler(uint32_t *);
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void HardFault_Handler(void) __attribute__(( naked ));
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void HardFault_Handler(void)
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{
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__ASM volatile(
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" .syntax unified \n"
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" ldr r0, =0xFFFFFFFD \n"
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" cmp r0, lr \n"
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" bne HardFault_Handler_ChooseMSP \n"
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/* Reading PSP into R0 */
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" mrs r0, PSP \n"
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" b HardFault_Handler_Continue \n"
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"HardFault_Handler_ChooseMSP: \n"
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/* Reading MSP into R0 */
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" mrs r0, MSP \n"
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/* -----------------------------------------------------------------
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* If we have selected MSP check if we may use stack safetly.
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* If not - reset the stack to the initial value. */
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" ldr r1, =__StackTop \n"
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" ldr r2, =__StackLimit \n"
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/* MSP is in the range of the stack area */
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" cmp r0, r1 \n"
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" bhi HardFault_MoveSP \n"
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" cmp r0, r2 \n"
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" bhi HardFault_Handler_Continue \n"
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/* ----------------------------------------------------------------- */
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"HardFault_MoveSP: \n"
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" mov SP, r1 \n"
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" movs r0, #0 \n"
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"HardFault_Handler_Continue: \n"
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" ldr r3, =%0 \n"
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" bx r3 \n"
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" .ltorg \n"
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: : "X"(HardFault_c_handler)
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);
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}
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#endif //NRF_MODULE_ENABLED(HARDFAULT_HANDLER)
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