摘要：
GDT和LDT描述符（段描述符）：struct Segment_Descriptor{ ushort segment_limit_lo : 16; uint23 segment_base_lo : 24; uint4 type : 4; uint1 desc_type : 1; uint2 dpl : 2; uint1 present: 1; uint4 segment_limit_hi : 4; uint1 unknown_avl_bit : 1; uint1 reserved: 1; // always 0 uint1 d_bit : 1; uint1 granularity : 1;}. 阅读全文
