The following exception entry instructions are serializing:
Instructions that take the prefetch abort handler.
Instructions that take the Undefined Instruction exception handler.
The following instructions that modify mode or program control are serializing:
CPSRwhen they modify control or mode bits.
Data processing to PC with the S bit set (for example,
MOVS pc, r14).
The following instructions are serializing:
MCRto CP14 or CP15 except
MRCp14 for debug registers.
The following instruction, that modifies the SPSR, is serializing: