The main rule for data access is max(CPL, RPL) ≤ DPL. For code transfers, the rules get considerably more complex -- conforming segments, call gates, and interrupt gates each have different privilege and state validation logic. If all these checks were done in microcode, each segment load would need a cascade of conditional branches: is it a code or data segment? Is the segment present? Is it conforming? Is the RPL valid? Is the DPL valid? This would greatly bloat the microcode ROM and add cycles to every protected-mode operation.
attack someone who prefers to solve a particular problem in C, or Zig
，详情可参考51吃瓜
Последние новости
Please, please, please stop using passkeys for encrypting user data/
坚持党的领导，坚持以人民为中心的发展思想，坚持发挥我国社会主义制度能够集中力量办大事的政治优势，坚持精准扶贫方略，坚持调动广大贫困群众积极性、主动性、创造性，坚持弘扬和衷共济、团结互助美德，坚持求真务实、较真碰硬。