PSR_E_BIT
(PSR_J_BIT | PSR_E_BIT | PSR_A_BIT | PSR_I_BIT | PSR_F_BIT | \
regs->ARM_cpsr |= PSR_E_BIT; \
unsigned long cpsr = regs->ARM_cpsr & ~(PSR_f | PSR_E_BIT);
cpsr |= PSR_E_BIT;