50 lines
1.8 KiB
C
50 lines
1.8 KiB
C
/* Copyright (c) 2015 Nordic Semiconductor. All Rights Reserved.
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*
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* The information contained herein is property of Nordic Semiconductor ASA.
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* Terms and conditions of usage are described in detail in NORDIC
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* SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
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*
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* Licensees are granted free, non-transferable use of the information. NO
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* WARRANTY of ANY KIND is provided. This heading must NOT be removed from
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* the file.
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*
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*/
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#include <stdint.h>
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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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" ldr r3, =HardFault_c_handler \n"
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" tst lr, #4 \n"
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/* PSP is quite simple and does not require additional handler */
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" itt ne \n"
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" mrsne r0, psp \n"
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/* Jump to the handler, do not store LR - returning from handler just exits exception */
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" bxne r3 \n"
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/* Processing MSP requires stack checking */
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" mrs r0, msp \n"
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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 <__StackTop, __StackLimit) */
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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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"HardFault_MoveSP: \n"
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" mov sp, r1 \n"
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" mov r0, #0 \n"
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"HardFault_Handler_Continue: \n"
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" bx r3 \n"
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" .align \n"
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);
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}
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