Loading...
/*
* Copyright (c) 2016 Jean-Paul Etienne <fractalclone@gmail.com>
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <irq.h>
#include <irq_offload.h>
#include <misc/printk.h>
volatile irq_offload_routine_t _offload_routine;
static volatile void *offload_param;
/*
* Called by _enter_irq
*
* Just in case the offload routine itself generates an unhandled
* exception, clear the offload_routine global before executing.
*/
void _irq_do_offload(void)
{
irq_offload_routine_t tmp;
if (!_offload_routine)
return;
tmp = _offload_routine;
_offload_routine = NULL;
tmp((void *)offload_param);
}
void irq_offload(irq_offload_routine_t routine, void *parameter)
{
unsigned int key;
key = irq_lock();
_offload_routine = routine;
offload_param = parameter;
__asm__ volatile ("ecall");
irq_unlock(key);
}
|