PSL_PREVU
((ksc.sc_ps & (PSL_U | PSL_PREVU)) != (PSL_U | PSL_PREVU)) ||
((ksc.sc_ps & (PSL_U | PSL_PREVU)) != (PSL_U | PSL_PREVU)) ||
tf->tf_psl = (regs->psl|PSL_U|PSL_PREVU) &
((gr[_REG_PSL] & (PSL_U | PSL_PREVU)) != (PSL_U | PSL_PREVU)) ||
tf->tf_psl = PSL_U | PSL_PREVU;
tf->tf_psl = PSL_U|PSL_PREVU;
tf->tf_psl = PSL_U|PSL_PREVU;
uc->uc_mcontext.__gregs[_REG_PSL] &= ~(PSL_U | PSL_PREVU);