OR

Logical OR

OR rd, rs1, rs2

Performs a bitwise logical OR operation.

Encoding

Binary Layout

0000000

31:25

rs2

24:20

rs1

19:15

110

14:12

rd

11:7

0110011

6:0

 

Format R-Type

Opcode 0x00006033

Extension RV32I

Operands

• rd
  Destination register (integer)
• rs1
  Source register 1 (integer)
• rs2
  Source register 2 (integer)

Example

OR x10, x11, x12

// Bitwise OR of x11 and x12.

Related

More in RV32I

Reference

View in RISC-V Unprivileged ISA Specification ↗ RISC-V ISA Manual

Description

OR performs a bitwise logical OR of the values in rs1 and rs2, writing the result to rd.

Operation

R[rd] = R[rs1] | R[rs2];