The tradeoff is complexity. The microcode must be carefully arranged so that the instructions in delay slots are either useful setup for both paths, or at least harmless if the redirect fires. Not every case is as clean as RETF. When a PLA redirect interrupts an LCALL, the return address is already pushed onto the microcode call stack (yes, the 386 has a microcode call stack) -- the redirected code must account for this stale entry. When multiple protection tests overlap, or when a redirect fires during a delay slot of another jump, the control flow becomes hard to reason about. During the FPGA core implementation, protection delay slot interactions were consistently the most difficult bugs to track down.
AFP via Getty Images，推荐阅读同城约会获取更多信息
，推荐阅读爱思助手下载最新版本获取更多信息
Медведев вышел в финал турнира в Дубае17:59。业内人士推荐同城约会作为进阶阅读
文 | 牛刀财经NiuDaoCJ，作者丨万文广
Овечкин продлил безголевую серию в составе Вашингтона09:40