67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
/* Copyright 2018 Canaan Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/* Enable kernel-mode log API */
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#include <stdint.h>
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#include <stdlib.h>
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#include "interrupt.h"
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#include "dump.h"
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#include "syscalls.h"
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#include "syslog.h"
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uintptr_t __attribute__((weak))
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handle_irq_dummy(uintptr_t cause, uintptr_t epc, uintptr_t regs[32], uintptr_t fregs[32])
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{
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dump_core("unhandled interrupt", cause, epc, regs, fregs);
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sys_exit(1337);
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return epc;
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}
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uintptr_t __attribute__((weak, alias("handle_irq_dummy")))
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handle_irq_m_soft(uintptr_t cause, uintptr_t epc, uintptr_t regs[32], uintptr_t fregs[32]);
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uintptr_t __attribute__((weak, alias("handle_irq_dummy")))
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handle_irq_m_timer(uintptr_t cause, uintptr_t epc, uintptr_t regs[32], uintptr_t fregs[32]);
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uintptr_t __attribute__((weak, alias("handle_irq_dummy")))
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handle_irq_m_ext(uintptr_t cause, uintptr_t epc, uintptr_t regs[32], uintptr_t fregs[32]);
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uintptr_t __attribute__((weak))
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handle_irq(uintptr_t cause, uintptr_t epc, uintptr_t regs[32], uintptr_t fregs[32])
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{
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#if defined(__GNUC__)
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#pragma GCC diagnostic ignored "-Woverride-init"
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#endif
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/* clang-format off */
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static uintptr_t (* const irq_table[])(
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uintptr_t cause,
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uintptr_t epc,
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uintptr_t regs[32],
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uintptr_t fregs[32]) =
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{
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[0 ... 14] = handle_irq_dummy,
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[IRQ_M_SOFT] = handle_irq_m_soft,
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[IRQ_M_TIMER] = handle_irq_m_timer,
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[IRQ_M_EXT] = handle_irq_m_ext,
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};
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/* clang-format on */
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#if defined(__GNUC__)
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#pragma GCC diagnostic warning "-Woverride-init"
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#endif
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return irq_table[cause & CAUSE_MACHINE_IRQ_REASON_MASK](cause, epc, regs, fregs);
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}
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