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/* * Copyright (c) 2015 Intel corporation * * SPDX-License-Identifier: Apache-2.0 */ /** * @file Software interrupts utility code - ARM implementation */ #include <kernel.h> #include <irq_offload.h> volatile irq_offload_routine_t offload_routine; static void *offload_param; /* Called by __svc */ void _irq_do_offload(void) { offload_routine(offload_param); } void irq_offload(irq_offload_routine_t routine, void *parameter) { #if defined(CONFIG_ARMV6_M_ARMV8_M_BASELINE) && defined(CONFIG_ASSERT) /* Cortex M0 hardfaults if you make a SVC call with interrupts * locked. */ unsigned int key; __asm__ volatile("mrs %0, PRIMASK;" : "=r" (key) : : "memory"); __ASSERT(key == 0, "irq_offload called with interrupts locked\n"); #endif /* CONFIG_ARMV6_M_ARMV8_M_BASELINE && CONFIG_ASSERT */ k_sched_lock(); offload_routine = routine; offload_param = parameter; __asm__ volatile ("svc %[id]" : : [id] "i" (_SVC_CALL_IRQ_OFFLOAD) : "memory"); offload_routine = NULL; k_sched_unlock(); } |