TSTATE_PSTATE_SHIFT
#define TSTATE_PEF (PSTATE_PEF<<TSTATE_PSTATE_SHIFT)
#define TSTATE_PRIV (PSTATE_PRIV<<TSTATE_PSTATE_SHIFT)
#define TSTATE_KERN ((PSTATE_KERN)<<TSTATE_PSTATE_SHIFT)
(pstate << TSTATE_PSTATE_SHIFT) | (tf->tf_tstate & TSTATE_CWP);
int pstate = (tstate>>TSTATE_PSTATE_SHIFT);
tf->tf_tstate |= (PSTATE_PEF<<TSTATE_PSTATE_SHIFT);
tf->tf_tstate |= (PSTATE_PEF<<TSTATE_PSTATE_SHIFT);
((PSTATE_USER) << TSTATE_PSTATE_SHIFT);
~((PSTATE_PEF << TSTATE_PSTATE_SHIFT) | TSTATE_CCR);