Function lwp_memcpy

components/lwp/lwp_user_mm.c:735–780

}

void *lwp_memcpy(void * __restrict dst, const void * __restrict src, size_t size)
{
    void *rc = dst;
    long len;

    if (lwp_in_user_space(dst))
    {
        if (!lwp_in_user_space(src))
        {
            len = lwp_put_to_user(dst, (void *)src, size);
            if (!len)
            {
                LOG_E("lwp_put_to_user(lwp=%p, dst=%p,src=%p,size=0x%lx) failed", lwp_self(), dst, src, size);
            }
        }
        else
        {
            /* not support yet */
            LOG_W("%s(dst=%p,src=%p,size=0x%lx): operation not support", dst, src, size, __func__);
        }
    }
    else
    {
        if (lwp_in_user_space(src))
        {
            len = lwp_get_from_user(dst, (void *)src, size);
            if (!len)
            {
                LOG_E("lwp_get_from_user(lwp=%p, dst=%p,src=%p,size=0x%lx) failed", lwp_self(), dst, src, size);
            }
        }
        else
        {
            if (_can_unaligned_access(dst) && _can_unaligned_access(src))
            {
                rc = memcpy(dst, src, size);
            }
            else
            {
                rt_memcpy(dst, src, size);
            }
        }
    }

    return rc;
}

int lwp_user_accessible_ext(struct rt_lwp *lwp, void *addr, size_t size)
{