45 lines
817 B
C
45 lines
817 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 <irq.h>
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#include <irq_offload.h>
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#include <misc/printk.h>
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volatile irq_offload_routine_t _offload_routine;
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static volatile void *offload_param;
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/*
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* Called by _enter_irq
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*
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* Just in case the offload routine itself generates an unhandled
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* exception, clear the offload_routine global before executing.
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*/
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void _irq_do_offload(void)
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{
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irq_offload_routine_t tmp;
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if (!_offload_routine)
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return;
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tmp = _offload_routine;
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_offload_routine = NULL;
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tmp((void *)offload_param);
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}
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void irq_offload(irq_offload_routine_t routine, void *parameter)
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{
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int key;
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key = irq_lock();
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_offload_routine = routine;
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offload_param = parameter;
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__asm__ volatile ("ecall");
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irq_unlock(key);
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}
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