The Cortex-A53 processor supports a range of debug and trace features including:
ARM v8 debug features in each core.
ETMv4 instruction trace unit for each core.
CoreSight Cross Trigger Interface (CTI).
CoreSight Cross Trigger Matrix (CTM).
The Cortex-A53 processor has an Advanced Peripheral Bus version 3 (APBv3) debug interface that is CoreSight compliant. This permits system access to debug resources, for example, the setting of watchpoints and breakpoints.
The Cortex-A53 processor provides performance monitors that can be configured to gather statistics on the operation of each core and the memory system. The performance monitors implement the ARM PMUv3 architecture.