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/* * 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); } |