Nearly every protection-related instruction -- far CALL, far JMP, far RET, INT, IRET, MOV to segment register, task switch -- needs to load a segment descriptor from the GDT or LDT. The 386 microcode centralizes this into a shared subroutine called LD_DESCRIPTOR, which reads the 8-byte descriptor from memory and feeds the high DWORD (containing Type, DPL, S, and P bits) to the Test PLA for validation.
Цены на нефть взлетели до максимума за полгода17:55
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Трамп высказался о непростом решении по Ирану09:14。同城约会对此有专业解读
// 易错点4：错误弹出栈顶 → 破坏独立车队的时间记录，导致结果错误