diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/hardfault/nrf52/handler/hardfault_handler_gcc.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/hardfault/nrf52/handler/hardfault_handler_gcc.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/hardfault/nrf52/handler/hardfault_handler_gcc.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/hardfault/nrf52/handler/hardfault_handler_gcc.c new file mode 100644 index 0000000..13d5a1b --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/hardfault/nrf52/handler/hardfault_handler_gcc.c @@ -0,0 +1,100 @@ +/** + * Copyright (c) 2015 - 2018, 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( + " tst lr, #4 \n" + + /* PSP is quite simple and does not require additional handler */ + " itt ne \n" + " mrsne r0, psp \n" + /* Jump to the handler, do not store LR - returning from handler just exits exception */ + " bne HardFault_Handler_Continue \n" + + /* Processing MSP requires stack checking */ + " mrs r0, msp \n" + + " 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" + " mov r0, #0 \n" + + "HardFault_Handler_Continue: \n" +#if HARDFAULT_HANDLER_GDB_PSP_BACKTRACE + " mov r3, sp \n" /* Remember old SP */ + " mov sp, r0 \n" /* SP changed the pointer when hardfault was generated - we cannot just switch to PSP in exception */ + " push {r3,lr} \n" /* Save old SP and LR on the task stack */ +#if !defined(__SES_ARM) + " .cfi_def_cfa_offset 8 \n" + " .cfi_offset 14, -4 \n" +#endif + /* No information about saved SP above (no .cfi_offset 13, -8). + * In other case this would direct us back to using always MSP while backtracking */ + " ldr r3, =%0 \n" + " blx r3 \n" + " pop {r3,lr} \n" + " mov sp, r3 \n" + " bx lr \n" +#else // HARDFAULT_HANDLER_GDB_PSP_BACKTRACE + " ldr r3, =%0 \n" + " bx r3 \n" +#endif + " .ltorg \n" + : : "X"(HardFault_c_handler) + ); +} +#endif //NRF_MODULE_ENABLED(HARDFAULT_HANDLER) |