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.
Marianna SpringSocial media investigations correspondent，更多细节参见Line官方版本下载
Credit: Courtesy Instagram，更多细节参见im钱包官方下载
Карина Черных (Редактор отдела «Ценности»)