srliw
Shift right logical immediate word
Shift the 32-bit value in xs1 right by shamt, and store the sign-extended result in xd
| This instruction must have data-independent timing when extension Zkt is enabled. |
Decode Variables
Bits<5> shamt = $encoding[24:20];
Bits<5> xs1 = $encoding[19:15];
Bits<5> xd = $encoding[11:7];Execution
-
IDL
-
Sail
XReg operand = X[xs1][31:0];
X[xd] = sext(operand >> shamt, 31);{
let xs1_val = (X(xs1))[31..0];
let result : bits(32) = match op {
RISCV_SLLIW => xs1_val << shamt,
RISCV_SRLIW => xs1_val >> shamt,
RISCV_SRAIW => shift_right_arith32(xs1_val, shamt)
};
X(xd) = sign_extend(result);
RETIRE_SUCCESS
}