mhpmcounter12h

Machine Hardware Performance Counter 12, Upper half

Upper half of mhpmcounter12.

Attributes

Defining Extension

  • Smhpm, version >= Smhpm@1.11.0

CSR Address

0xb8c

Length

32-bit

Privilege Mode

M

Format

mhpmcounter12h format
Figure 1. mhpmcounter12h format

Field Summary

Name Location Type Reset Value

mhpmcounter12h.COUNT

31:0

UNDEFINED_LEGAL

Fields

COUNT

Location

31:0

Description

Upper bits of counter.

Type
Reset value

UNDEFINED_LEGAL

Software read

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

if (HPM_COUNTER_EN[12]) {
  return read_hpm_counter(12)[63:32];
} else {
  return 0;
}