GDT_B64CODE
set_usegd(&bgdt[GDT_B64CODE], SDP_LONG, NULL, SDP_LIMIT_MAX, SDT_MEMERA,
set_usegd(&gdt0[GDT_B64CODE], SDP_LONG, NULL, SDP_LIMIT_MAX,
#define LEN_MIN_GDT_BOOT (GDT_B64CODE + 1)
#define B64CODE_SEL SEL_GDT(GDT_B64CODE, SEL_KPL)