gf2p8mulb

Galois Field Multiply Bytes

GF2P8MULB xmm1, xmm2/m128

Multiplies bytes in GF(2^8).

Details

The Galois Field Multiply Bytes instruction multiplies bytes in GF(2^8).

Pseudocode Operation

// Multiplies bytes in GF(2^8)

Example

GF2P8MULB xmm1, xmm2/m128

Encoding

Binary Layout
66
+0
0F
+1
38
+2
CF
+3
 
Format VEX
Opcode 66 0F 38 CF
Extension GFNI

Operands

  • dest
    128-bit XMM SIMD register
  • src
    128-bit XMM SIMD register or Memory operand