6.3.9. c9, Event Count Registers

There are three Event Count Registers (PMXEVCNTR0-PMXEVCNTR2) in the processor. Each PMXEVCNTR Register, as selected by the PMSELR Register, counts instances of an event selected by the corresponding PMXEVTYPER Register. The register to be accessed is determined by the value in the PMSELR.

Each PMXEVCNTR Register is:

To access the current Event Count Registers, read or write CP15 with:

MRC p15, 0, <Rd>, c9, c13, 2 ; Read current PMNx Register
MCR p15, 0, <Rd>, c9, c13, 2 ; Write current PMNx Register
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