98 lines
2.3 KiB
C
98 lines
2.3 KiB
C
/*
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* Copyright (c) 2020 Antony Pavlov <antonynpavlov@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 <zephyr/kernel.h>
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#include <zephyr/logging/log.h>
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LOG_MODULE_DECLARE(os, CONFIG_KERNEL_LOG_LEVEL);
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FUNC_NORETURN void z_mips_fatal_error(unsigned int reason,
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const z_arch_esf_t *esf)
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{
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#ifdef CONFIG_EXCEPTION_DEBUG
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if (esf != NULL) {
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LOG_ERR("$ 0 : (ze) %08lx(at) %08lx(v0) %08lx(v1)\n",
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esf->at, esf->v0, esf->v1);
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LOG_ERR("$ 4 : %08lx(a0) %08lx(a1) %08lx(a2) %08lx(a3)\n",
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esf->a0, esf->a1, esf->a2, esf->a3);
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LOG_ERR("$ 8 : %08lx(t0) %08lx(t1) %08lx(t2) %08lx(t3)\n",
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esf->t0, esf->t1, esf->t2, esf->t3);
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LOG_ERR("$12 : %08lx(t4) %08lx(t5) %08lx(t6) %08lx(t7)\n",
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esf->t4, esf->t5, esf->t6, esf->t7);
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LOG_ERR("...\n");
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LOG_ERR("$24 : %08lx(t8) %08lx(t9)\n",
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esf->t8, esf->t9);
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LOG_ERR("$28 : %08lx(gp) (sp) (s8) %08lx(ra)\n",
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esf->gp, esf->ra);
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LOG_ERR("EPC : %08lx\n", esf->epc);
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LOG_ERR("Status: %08lx\n", esf->status);
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LOG_ERR("Cause : %08lx\n", esf->cause);
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LOG_ERR("BadVA : %08lx\n", esf->badvaddr);
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}
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#endif /* CONFIG_EXCEPTION_DEBUG */
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z_fatal_error(reason, esf);
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CODE_UNREACHABLE;
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}
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static char *cause_str(unsigned long cause)
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{
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switch (cause) {
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case 0:
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return "interrupt pending";
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case 1:
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return "TLB modified";
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case 2:
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return "TLB miss on load or ifetch";
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case 3:
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return "TLB miss on store";
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case 4:
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return "address error on load or ifetch";
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case 5:
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return "address error on store";
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case 6:
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return "bus error on ifetch";
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case 7:
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return "bus error on load or store";
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case 8:
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return "system call";
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case 9:
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return "breakpoint";
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case 10:
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return "reserved instruction";
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case 11:
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return "coprocessor unusable";
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case 12:
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return "arithmetic overflow";
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case 13:
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return "trap instruction";
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case 14:
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return "virtual coherency instruction";
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case 15:
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return "floating point";
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case 16:
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return "iwatch";
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case 23:
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return "dwatch";
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case 31:
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return "virtual coherency data";
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default:
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return "unknown";
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}
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}
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void _Fault(z_arch_esf_t *esf)
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{
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unsigned long cause;
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cause = (read_c0_cause() & CAUSE_EXP_MASK) >> CAUSE_EXP_SHIFT;
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LOG_ERR("");
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LOG_ERR(" cause: %ld, %s", cause, cause_str(cause));
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z_mips_fatal_error(K_ERR_CPU_EXCEPTION, esf);
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}
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