Function rt_hw_backtrace_frame_unwind

libcpu/risc-v/common64/backtrace.c:68–109

#endif /* RT_USING_SMART */

rt_err_t rt_hw_backtrace_frame_unwind(rt_thread_t thread, struct rt_hw_backtrace_frame *frame)
{
    rt_err_t rc = -RT_ERROR;
    rt_uintptr_t *fp = (rt_uintptr_t *)frame->fp;

    if (fp && !((long)fp & 0x7))
    {
#ifdef RT_USING_SMART
        if (thread->lwp)
        {
            void *lwp = thread->lwp;
            void *this_lwp = lwp_self();
            if (this_lwp == lwp && rt_hw_mmu_v2p(((rt_lwp_t)lwp)->aspace, fp) != ARCH_MAP_FAILED)
            {
                rc = _bt_kaddr(fp, frame);
            }
            else if (lwp_user_accessible_ext(lwp, (void *)fp, WORD))
            {
                rc = _bt_uaddr(lwp, fp, frame);
            }
            else
            {
                rc = -RT_EFAULT;
            }
        }
        else
#endif
        if ((rt_kmem_v2p(fp) != ARCH_MAP_FAILED))
        {
            rc = _bt_kaddr(fp, frame);
        }
        else
        {
            rc = -RT_EINVAL;
        }
    }
    else
    {
        rc = -RT_EFAULT;
    }
    return rc;
}

rt_err_t rt_hw_backtrace_frame_get(rt_thread_t thread, struct rt_hw_backtrace_frame *frame)
{