31 lines
655 B
C
31 lines
655 B
C
/*
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* Copyright (c) 2016 Jean-Paul Etienne <fractalclone@gmail.com>
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <toolchain.h>
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#include <kernel_structs.h>
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#include <misc/printk.h>
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void _irq_spurious(void *unused)
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{
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u32_t mcause;
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ARG_UNUSED(unused);
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__asm__ volatile("csrr %0, mcause" : "=r" (mcause));
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mcause &= SOC_MCAUSE_EXP_MASK;
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printk("Spurious interrupt detected! IRQ: %d\n", (int)mcause);
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#if defined(CONFIG_RISCV_HAS_PLIC)
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if (mcause == RISCV_MACHINE_EXT_IRQ) {
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printk("PLIC interrupt line causing the IRQ: %d\n",
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riscv_plic_get_irq());
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}
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#endif
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_NanoFatalErrorHandler(_NANO_ERR_SPURIOUS_INT, &_default_esf);
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}
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