add

Integer add

This instruction is defined by:

Encoding

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Synopsis

Add the value in xs1 to xs2, and store the result in xd. Any overflow is thrown away.

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

X[xd] = X[xs1] + X[xs2];
X[xd] = X[xs1] + X[xs2];