圖像來源，John Moore/Getty Images
Nature, Published online: 25 February 2026; doi:10.1038/d41586-026-00292-7，详情可参考WPS下载最新地址
One user Alastair, or Eret, who hosts a server on the platform with more than 60,000 users, told the BBC simply, "I do not trust them."。搜狗输入法2026对此有专业解读
This post is an expanded version of a presentation I gave at the 2025 WebAssembly CG meeting in Munich.
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.