sraw

Shift right arithmetic word

This instruction is defined by:

Encoding

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Synopsis

Arithmetic shift the 32-bit value in xs1 right by the value in the lower 5 bits of xs2, and store the sign-extended result in xd.

Access

M HS U VS VU

Always

Always

Always

Always

Always

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

XReg operand1 = sext(X[xs1], 31);
X[xd] = sext(operand1 >>> X[xs2][4:0], 31);
XReg operand1 = sext(X[xs1], 31);
X[xd] = sext(operand1 >>> X[xs2][4:0], 31);