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