432           struct pcb *pcb2 = lwp_getpcb(l2);  in cpu_lwp_fork()  local
444           memcpy(pcb2, pcb1, sizeof(struct pcb));  in cpu_lwp_fork()
447           if (thunk_getcontext(&pcb2->pcb_ucp))  in cpu_lwp_fork()
451           pcb2->pcb_ucp.uc_mcontext._mc_tlsbase = (intptr_t) l2->l_private;  in cpu_lwp_fork()
452           pcb2->pcb_ucp.uc_flags |= _UC_TLSBASE;  in cpu_lwp_fork()
455           pcb2->sys_stack_top = pcb2->sys_stack + TRAPSTACKSIZE;  in cpu_lwp_fork()
458           pcb2->pcb_ucp.uc_stack.ss_sp = pcb2->sys_stack;  in cpu_lwp_fork()
459           pcb2->pcb_ucp.uc_stack.ss_size = pcb2->sys_stack_top - pcb2->sys_stack;  in cpu_lwp_fork()
460           pcb2->pcb_ucp.uc_link = &pcb2->pcb_userret_ucp;  in cpu_lwp_fork()
462           thunk_sigemptyset(&pcb2->pcb_ucp.uc_sigmask);  in cpu_lwp_fork()
464           thunk_makecontext(&pcb2->pcb_ucp,  in cpu_lwp_fork()
466               3, &pcb2->pcb_ucp, func, arg, NULL);  in cpu_lwp_fork()