htimedeltah

Hypervisor time delta, upper half

Upper half of the htimedelta CSR.

Attributes

CSR Address

0x615

Defining extension

  • H, version >= H@1.0.0

Length

32-bit

Privilege Mode

S

Format

htimedeltah format
Figure 1. htimedeltah format

Field Summary

Name Location Type Reset Value

DELTA

31:0

RW

UNDEFINED_LEGAL

Fields

DELTA

Location

htimedeltah[31:0]

Description

Signed delta

Type

RW

Read-Write

Field is writable by software. Any value that fits in the field is acceptable and shall be retained for subsequent reads.
Reset value

UNDEFINED_LEGAL

Software write

This field has special behavior when written by software (e.g., through csrrw).

When software tries to write csr_value, the field will be written with the return value of the function below.

%%LINK%csr_field;htimedelta.DELTA;CSR[htimedelta].DELTA%% = {csr_value.DELTA, %%LINK%csr_field;htimedelta.DELTA;CSR[htimedelta].DELTA%%[31:0]};
return csr_value.DELTA;

Software read

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

  • Pruned

  • Original

return %%LINK%csr_field;htimedelta.DELTA;CSR[htimedelta].DELTA%%[31:0];
return %%LINK%csr_field;htimedelta.DELTA;CSR[htimedelta].DELTA%%[31:0];