andn

AND with inverted operand

Performs the bitwise logical AND operation between xs1 and the bitwise inversion of xs2.

This instruction must have data-independent timing when extension Zkt is enabled.

Assembly format

andn xd, xs1, xs2

Decode Variables

Bits<5> xs2 = $encoding[24:20];
Bits<5> xs1 = $encoding[19:15];
Bits<5> xd = $encoding[11:7];

Execution

X[xd] = X[xs1] & ~X[xs2];

Encoding

svg

Defining extension

(Zbb || Zbkb)

Access

M

Always

Containing profiles

  • Mandatory: None

  • Optional: None