63 lines
1.5 KiB
C
63 lines
1.5 KiB
C
/*
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* Copyright (c) 2014 Wind River Systems, Inc.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file
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* @brief Common fault handler for ARCv2
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*
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* Common fault handler for ARCv2 processors.
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*/
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#include <toolchain.h>
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#include <linker/sections.h>
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#include <inttypes.h>
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#include <kernel.h>
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#include <kernel_structs.h>
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#include <misc/printk.h>
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/*
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* @brief Fault handler
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*
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* This routine is called when fatal error conditions are detected by hardware
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* and is responsible only for reporting the error. Once reported, it then
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* invokes the user provided routine _SysFatalErrorHandler() which is
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* responsible for implementing the error handling policy.
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*
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* @return This function does not return.
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*/
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void _Fault(const NANO_ESF *esf)
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{
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u32_t vector, code, parameter;
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u32_t exc_addr = _arc_v2_aux_reg_read(_ARC_V2_EFA);
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u32_t ecr = _arc_v2_aux_reg_read(_ARC_V2_ECR);
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vector = _ARC_V2_ECR_VECTOR(ecr);
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code = _ARC_V2_ECR_CODE(ecr);
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parameter = _ARC_V2_ECR_PARAMETER(ecr);
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/* exception raised by kernel */
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if (vector == 0x9 && parameter == _TRAP_S_CALL_RUNTIME_EXCEPT) {
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_NanoFatalErrorHandler(esf->r0, esf);
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return;
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}
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printk("Exception vector: 0x%x, cause code: 0x%x, parameter 0x%x\n",
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vector, code, parameter);
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printk("Address 0x%x\n", exc_addr);
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#ifdef CONFIG_ARC_STACK_CHECKING
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/* Vector 6 = EV_ProV. Regardless of code, parameter 2 means stack
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* check violation
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*/
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if (vector == 6 && parameter == 2) {
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_NanoFatalErrorHandler(_NANO_ERR_STACK_CHK_FAIL, esf);
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return;
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}
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#endif
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_NanoFatalErrorHandler(_NANO_ERR_HW_EXCEPTION, esf);
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}
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