CSRW

Control Status Register Write

CSRW csr, rs

Writes a register value to a CSR.

Details

CSRW is an assembler pseudoinstruction for CSRRW x0, csr, rs1. It writes rs1 to the CSR without reading it.

Pseudocode Operation

CSRs[csr] = R[rs];

Example

CSRW mepc, x10

Encoding

Binary Layout

csr

31:20

rs1

19:15

001000001110011

14:0

Format I-Type

Opcode 0x00001073

Extension Pseudo

Operands

csr
CSR Address
rs
Source