mhpmcounter31h

Machine Hardware Performance Counter 31, Upper half

Upper half of mhpmcounter31.

Attributes

CSR Address

0xb9f

Defining extension

Length

32-bit

Privilege Mode

Figure 1. mhpmcounter31h format

Name Location Type Reset Value

Name	Location	Type	Reset Value
`COUNT`	31:0	RO	0

31:0

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

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

return 0;

if (HPM_COUNTER_EN[31]) {
  return read_hpm_counter(31)[63:32];
} else {
  return 0;
}