TLD_PAGE_MASK
if (TLD_PAGE_SIZE - (~TLD_PAGE_MASK & (intptr_t)data_alloc) >= tld_meta_p->size) {
map_val.data = (void *)(TLD_PAGE_MASK & (intptr_t)data_alloc);
data->start = (~TLD_PAGE_MASK & (intptr_t)data_alloc) +