mhpmcounter28h

Machine Hardware Performance Counter 28, Upper half

Upper half of mhpmcounter28.

Attributes

CSR Address

0xb9c

Defining extension

  • Smhpm, version >= Smhpm@1.11.0

Length

32-bit

Privilege Mode

M

Format

mhpmcounter28h format
Figure 1. mhpmcounter28h format

Field Summary

Name Location Type Reset Value

COUNT

31:0

RO

0

Fields

COUNT

Location

mhpmcounter28h[31:0]

Description

Upper bits of counter.

Type

RO

Read-Only

Field has a hardwired value that does not change. Writes to an RO field are ignored.
Reset value

0

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[28]) {
  return read_hpm_counter(28)[63:32];
} else {
  return 0;
}