Changeset View

Standalone View

Show First 20 Lines • Show All 152 Lines • ▼ Show 20 Lines	if ((td2->td_pflags & TDP_KTHREAD) == 0) {
if (PCPU_GET(fpcurthread) == td1)		if (PCPU_GET(fpcurthread) == td1)
npxsave(td1->td_pcb->pcb_save);		npxsave(td1->td_pcb->pcb_save);
critical_exit();		critical_exit();
}		}

/* Copy td1's pcb */		/* Copy td1's pcb */
bcopy(td1->td_pcb, pcb2, sizeof(*pcb2));		bcopy(td1->td_pcb, pcb2, sizeof(*pcb2));

		/* But reset debug registers in the new thread */
		pcb2->pcb_dr0 = 0;
		pcb2->pcb_dr1 = 0;
		pcb2->pcb_dr2 = 0;
		pcb2->pcb_dr3 = 0;
		pcb2->pcb_dr6 = 0;
		pcb2->pcb_dr7 = 0;

/* Properly initialize pcb_save */		/* Properly initialize pcb_save */
pcb2->pcb_save = get_pcb_user_save_pcb(pcb2);		pcb2->pcb_save = get_pcb_user_save_pcb(pcb2);

/* Kernel threads start with clean NPX and segment bases. */		/* Kernel threads start with clean NPX and segment bases. */
if ((td2->td_pflags & TDP_KTHREAD) != 0) {		if ((td2->td_pflags & TDP_KTHREAD) != 0) {
pcb2->pcb_gs = _udatasel;		pcb2->pcb_gs = _udatasel;
set_fsbase(td2, 0);		set_fsbase(td2, 0);
set_gsbase(td2, 0);		set_gsbase(td2, 0);
▲ Show 20 Lines • Show All 507 Lines • Show Last 20 Lines