slli.uw
Shift left unsigned word (Immediate)
Takes the least-significant word of rs1, zero-extends it, and shifts it left by the immediate.
This instruction is the same as slli with zext.w performed on rs1 before shifting.
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Decode Variables
Bits<6> shamt = $encoding[25:20];
Bits<5> rs1 = $encoding[19:15];
Bits<5> rd = $encoding[11:7];Execution
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IDL
-
Sail
if (implemented?(ExtensionName::B) && (misa.B == 1'b0)) {
raise(ExceptionCode::IllegalInstruction, mode(), $encoding);
}
X[rd] = X[rs1][31:0] << shamt;{
let rs1_val = X(rs1);
let result : xlenbits = zero_extend(rs1_val[31..0]) << shamt;
X(rd) = result;
RETIRE_SUCCESS
}