PSR_AA32_DIT_BIT
unsigned long dit = !!(spsr & PSR_AA32_DIT_BIT);
pstate |= PSR_AA32_DIT_BIT;
psr = pstate & ~PSR_AA32_DIT_BIT;
if (pstate & PSR_AA32_DIT_BIT)
pstate & PSR_AA32_DIT_BIT ? '+' : '-',
new |= (old & PSR_AA32_DIT_BIT);