cpu_up.c

浏览该文件的文档.

/*
 * Copyright (c) 2006-2024, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2024-04-19     Shell        Fixup UP irq spinlock
 * 2024-05-22     Shell        Add UP cpu object and
 *                             maintain the rt_current_thread inside it
 */
#include <rthw.h>
#include <rtthread.h>
 
static struct rt_cpu _cpu;

void rt_spin_lock_init(struct rt_spinlock *lock)
{
    RT_UNUSED(lock);
}

void rt_spin_lock(struct rt_spinlock *lock)
{
    rt_enter_critical();
    RT_SPIN_LOCK_DEBUG(lock);
}

void rt_spin_unlock(struct rt_spinlock *lock)
{
    rt_base_t critical_level;
    RT_SPIN_UNLOCK_DEBUG(lock, critical_level);
    rt_exit_critical_safe(critical_level);
}

rt_base_t rt_spin_lock_irqsave(struct rt_spinlock *lock)
{
    rt_base_t level;
    RT_UNUSED(lock);
    level = rt_hw_interrupt_disable();
    rt_enter_critical();
    RT_SPIN_LOCK_DEBUG(lock);
    return level;
}

void rt_spin_unlock_irqrestore(struct rt_spinlock *lock, rt_base_t level)
{
    rt_base_t critical_level;
    RT_SPIN_UNLOCK_DEBUG(lock, critical_level);
    rt_exit_critical_safe(critical_level);
    rt_hw_interrupt_enable(level);
}

struct rt_cpu *rt_cpu_self(void)
{
    return &_cpu;
}

struct rt_cpu *rt_cpu_index(int index)
{
    return index == 0 ? &_cpu : RT_NULL;
}