PSR_PS
#define CLKF_USERMODE(framep) (((framep)->psr & PSR_PS) == 0)
if (psr & PSR_PS) { /* never allow in kernel */
if (psr & PSR_PS) {
if (psr & PSR_PS) {
if ((psr & PSR_PS) == 0) {
if (psr & PSR_PS) {
if ((tf->tf_psr & PSR_PS) != 0) {
if (psr & PSR_PS) {
if (psr & PSR_PS) {
if ((psr & PSR_PS) == 0) {