sraw

Shift right arithmetic word

This instruction is defined by:

Encoding

svg

Synopsis

Arithmetic shift the 32-bit value in rs1 right by the value in the lower 5 bits of rs2, and store the sign-extended result in rd.

Access

M

HS

U

VS

VU

Always

Always

Always

Always

Always

Decode Variables

Bits<5> rs2 = $encoding[24:20];
Bits<5> rs1 = $encoding[19:15];
Bits<5> rd = $encoding[11:7];

Execution

  • Pruned, XLEN == 64

  • Original

XReg operand1 = sext(X[rs1], 31);
X[rd] = sext(operand1 >>> X[rs2][4:0], 31);
XReg operand1 = sext(X[rs1], 31);
X[rd] = sext(operand1 >>> X[rs2][4:0], 31);