mhpmcounter8
Machine Hardware Performance Counter 8
Programmable hardware performance counter.
Fields
COUNT
- Location
-
mhpmcounter8[63:0]
- Description
Performance counter for event selected in mhpmevent8.EVENT.
+ Increments every time event occurs unless:
+
* mcountinhibit.HPM8 or its alias scountinhibit.HPM8
is set
* mhpmevent8.MINH is set and the current privilege level is M
* mhpmevent8.SINH or its alias hpmevent8..SINH
is set and the current privilege level is (H)S
* mhpmevent8.UINH or its alias hpmevent8.SINH
is set and the current privilege level is U
* mhpmevent8.VSINH or its alias hpmevent8.SINH
is set and the current privilege level is VS
* mhpmevent8.VUINH or its alias hpmevent8.SINH
is set and the current privilege level is VU
+
Unimplemented performance counter. Must be read-only 0 (access does not cause trap).
- Type
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. |
- Reset value
-
UNDEFINED_LEGAL
Software read
This CSR may return a value that is different from what is stored in hardware.
-
Pruned
-
Original
return read_hpm_counter(8);
if (HPM_COUNTER_EN[8]) {
return read_hpm_counter(8);
} else {
return 0;
}