XNOR

Exclusive NOR

XNOR rd, rs1, rs2

Performs bitwise exclusive-NOR (rs1 ^ ~rs2).

Details

XNOR computes the bitwise XNOR of rs1 and rs2. Equivalent to rd = ~(rs1 ^ rs2).

Pseudocode Operation

R[rd] = ~(R[rs1] ^ R[rs2]);

Example

XNOR x10, x11, x12

Encoding

Binary Layout
0100000
31:25
rs2
24:20
rs1
19:15
100
14:12
rd
11:7
0110011
6:0
 
Format R-Type
Opcode 0x33
Extension Zbb

Operands

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