sys_reg_Op0
#define sys_reg_Op0(id) (((id) >> Op0_shift) & Op0_mask)
sys_reg_Op0(tc->encoding), sys_reg_Op1(tc->encoding),
sys_reg_Op0(tc->end), sys_reg_Op1(tc->end),
#define sys_reg_Op0(id) (((id) >> Op0_shift) & Op0_mask)