mhpmcounter20h

Machine Hardware Performance Counter 20, Upper half

Upper half of mhpmcounter20.

Attributes

CSR Address

0xb94

Defining extension

  • Smhpm, version >= 0

Length

32-bit

Privilege Mode

M

Format

mhpmcounter20h format
Figure 1. mhpmcounter20h 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 0;
if (HPM_COUNTER_EN[20]) {
  return read_hpm_counter(20)[63:32];
} else {
  return 0;
}