TSB Trace synchronization barrier This instruction is a barrier that synchronizes the trace operations of instructions, see Trace Synchronization Barrier (TSB). If FEAT_TRF is not implemented, this instruction executes as a NOP. 1 1 0 1 0 1 0 1 0 0 0 0 0 0 1 1 0 0 1 0 0 0 1 0 0 1 0 1 1 1 1 1 TSB CSYNC if !IsFeatureImplemented(FEAT_TRF) then ExecuteAsNOP(); TraceSynchronizationBarrier();