C.ADD

Compressed Add

C.ADD rd, rs2

Adds two registers.

Encoding

Binary Layout

?

31:16

1001

15:12

rd_rs1_n0

11:7

c_rs2_n0

6:2

10

1:0

 

Format CR

Opcode 0x00009002

Extension C

Operands

• rd
  Dest/Src1
• rs2
  Source register 2 (integer)

Example

C.ADD x10, x11

// x10 = x10 + x11

Related

More in C

Reference

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

Description

Adds the value of a register to rd/rs1 and writes the result back to rd. 16-bit encoding of ADD.

Operation

R[rd] = R[rd] + R[rs2];