Function rt_hw_interrupt_install

bsp/loongson/ls2kdev/drivers/interrupt.c:168–194

}

rt_isr_handler_t rt_hw_interrupt_install(int vector, rt_isr_handler_t handler,
        void *param, const char *name)
{
    rt_isr_handler_t old_handler = RT_NULL;

    if (vector >= 0 && vector < MAX_INTR)
    {
        old_handler = irq_handle_table[vector].handler;

#ifdef RT_USING_INTERRUPT_INFO
        rt_strncpy(irq_handle_table[vector].name, name, RT_NAME_MAX);
#endif /* RT_USING_INTERRUPT_INFO */
        irq_handle_table[vector].handler = handler;
        irq_handle_table[vector].param = param;
    }

    if (vector <= 32)
    {
        mips_unmask_cpu_irq(2);
    }
    else
    {
        mips_unmask_cpu_irq(3);
    }

    return old_handler;
}

void rt_do_mips_cpu_irq(rt_uint32_t ip)
{