For segments, the job is split between hardware and microcode. When LD_DESCRIPTOR fires its protection test at 5CD, the Test PLA OR's the A-bit (bit 8 of the descriptor high DWORD) into a temporary register called PROTUN. Then the microcode at PROT_TESTS_PASSED takes over and writes the modified value back to the GDT or LDT in memory:
What is a stream?
，推荐阅读搜狗输入法2026获取更多信息
const lines = [];
// 核心逻辑：弹出栈中<=当前值的元素（这些元素不可能是前面元素的"下一个更大值"）