mhpmcounter9h

Machine Hardware Performance Counter 9, Upper half

Upper half of mhpmcounter9.

Attributes

CSR Address

0xb89

Defining extension

Length

32-bit

Privilege Mode

Figure 1. mhpmcounter9h format

Name Location Type Reset Value

Name	Location	Type	Reset Value
`COUNT`	31:0	RW-H	UNDEFINED_LEGAL

31:0

RW-H

UNDEFINED_LEGAL

RW-H	Read-Write with Hardware update Field is writable by software. Any value that fits in the field is acceptable. Hardware also updates the field without an explicit software write.

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

return read_hpm_counter(9)[63:32];

if (HPM_COUNTER_EN[9]) {
  return read_hpm_counter(9)[63:32];
} else {
  return 0;
}