GDT_LWPFS
set_usegd(&gdt[GDT_LWPFS], SDP_SHORT, NULL, SDP_LIMIT_MAX, SDT_MEMRWA,
ASSERT(bcmp(&CPU->cpu_gdt[GDT_LWPFS], &lwp->lwp_pcb.pcb_fsdesc,
gdt_update_usegd(GDT_LWPFS, &pcb->pcb_fsdesc);
gdt_update_usegd(GDT_LWPFS, &pcb->pcb_fsdesc);
#define LWPFS_SEL SEL_GDT(GDT_LWPFS, SEL_UPL)
gdt_update_usegd(GDT_LWPFS, &pcb->pcb_fsdesc);