sh2add.uw
Shift unsigned word left by 2 and add
This instruction is defined by:
Synopsis
Performs an XLEN-wide addition of two addends. The first addend is xs2. The second addend is the unsigned value formed by extracting the least-significant word of xs1 and shifting it left by 2 places.
Decode Variables
Bits<5> xs2 = $encoding[24:20];
Bits<5> xs1 = $encoding[19:15];
Bits<5> xd = $encoding[11:7];Execution
-
Pruned, XLEN == 64
-
Original
if (implemented?(ExtensionName::B) && (misa.B == 1'b0)) {
raise(ExceptionCode::IllegalInstruction, mode(), $encoding);
}
X[xd] = X[xs2] + (X[xs1][31:0] << 2);if (implemented?(ExtensionName::B) && (misa.B == 1'b0)) {
raise(ExceptionCode::IllegalInstruction, mode(), $encoding);
}
X[xd] = X[xs2] + (X[xs1][31:0] << 2);