5a37ddfbe6
Gregory Nutt is the copyright holder for those files and he has submitted the SGA as a result we can migrate the licenses to Apache. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
78 lines
2.2 KiB
C
78 lines
2.2 KiB
C
/****************************************************************************
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* arch/misoc/src/minerva/minerva_doexceptions.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. 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, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <assert.h>
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#include <debug.h>
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#include <nuttx/irq.h>
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#include <nuttx/arch.h>
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#include <nuttx/board.h>
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#include <arch/irq.h>
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#include <arch/board/board.h>
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#include "group/group.h"
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#include "minerva.h"
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#include "chip.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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uint32_t *minerva_doexception(uint32_t * regs)
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{
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uint32_t mcause;
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uint32_t pending;
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uint32_t *ret;
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board_autoled_on(LED_INIRQ);
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mcause = regs[REG_CSR_MCAUSE_NDX];
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if (mcause & 0x80000000)
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{
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pending = irq_pending();
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ret = minerva_decodeirq(pending, regs);
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}
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else
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{
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mcause = mcause & 0x7fffffff;
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if (mcause == 11)
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{
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regs[REG_CSR_MEPC_NDX] += 4;
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ret = minerva_doirq(MINERVA_IRQ_SWINT, regs);
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}
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else
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{
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while (1);
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}
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}
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board_autoled_off(LED_INIRQ);
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return ret;
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}
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