vsscratch

Virtual Supervisor Scratch Register

The vsscratch register is a VSXLEN-bit read/write register that is VS-mode’s version of supervisor register sscratch. When V=1, vsscratch substitutes for the usual sscratch, so instructions that normally read or modify sscratch actually access vsscratch instead. The contents of vsscratch never directly affect the behavior of the machine.

Attributes

CSR Address	0x240
Virtual CSR Address	0x140
Defining extension	H
Length	64-bit
Privilege Mode	VS

CSR Address

0x240

Virtual CSR Address

0x140

Defining extension

Length

64-bit

Privilege Mode

Format

Figure 1. vsscratch format

Field Summary

Name Location Type Reset Value

Name	Location	Type	Reset Value
`SCRATCH`	63:0	RW	UNDEFINED_LEGAL

SCRATCH

63:0

UNDEFINED_LEGAL

Fields

`SCRATCH`

Location: vsscratch[63:0]
Description: Virtual supervisor scratch register.
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