D7.7 PMCCNTSR, PMU Cycle Counter Snapshot Register

The PMCCNTSR is a captured copy of PMCCNTR_EL0.

Once it is captured, the value in PMCCNTSR is unaffected by writes to PMCCNTR_EL0 and PMCR_EL0.C.

Configurations

There are no configuration notes.

Usage constraints

Any access to PMCCNTSR returns an error if any of the following occurs:

  • The core power domain is off.
  • DoubleLockStatus() == TRUE.
Non-ConfidentialPDF file icon PDF version100798_0400_00_en
Copyright © 2016–2019 Arm Limited or its affiliates. All rights reserved.