mcycleh

High-half machine Cycle Counter

High-half alias of mcycle.

Attributes

CSR Address

0xb80

Defining extension

  • Zicntr, version >= 0

Length

32-bit

Privilege Mode

M

Format

mcycleh format
Figure 1. mcycleh format

Field Summary

Name Location Type Reset Value

Fields

This CSR has no fields. However, it must still exist (not cause an Illegal Instruction trap) and always return zero on a read.

Software read

This CSR may return a value that is different from what is stored in hardware.

  • Pruned

  • Original

return read_mcycle()[63:32];
return read_mcycle()[63:32];