Function _varea_create

components/mm/mm_aspace.c:631–641

}

static rt_varea_t _varea_create(void *start, rt_size_t size)
{
    rt_varea_t varea;
    varea = (rt_varea_t)rt_malloc(sizeof(struct rt_varea));
    if (varea)
    {
        varea->start = start;
        varea->size = size;
    }
    return varea;
}

#define _IS_OVERFLOW(start, length) ((length) > (0ul - (uintptr_t)(start)))
#define _IS_OVERSIZE(start, length, limit_s, limit_sz) (((length) + (rt_size_t)((char *)(start) - (char *)(limit_start))) > (limit_size))