segment_descriptor
struct segment_descriptor *sd = &cpu_info_primary.ci_gdt[sel].sd;
initcodesegment(struct segment_descriptor *cs)
setsegment(struct segment_descriptor *sd, void *base, size_t limit, int type,
struct segment_descriptor *sdp =
struct segment_descriptor *sdp;
sizeof(struct segment_descriptor) * NGDT < PAGE_SIZE);
struct segment_descriptor pcb_threadsegs[2];
struct segment_descriptor pm_codeseg; /* cs descriptor for process */
struct segment_descriptor sd;
void setsegment(struct segment_descriptor *, void *, size_t, int, int,
void initcodesegment(struct segment_descriptor *);