<code>0(R9)</code>, <code>8(R9)</code> and <code>16(R9)</code> respectively.
</p>

<p>
Storage-and-storage instructions such as <code>MVC</code> and <code>XC</code> are written
with the length as the first argument.
For example, <code>XC</code> <code>$8,</code> <code>(R9),</code> <code>(R9)</code> would clear
eight bytes at the address specified in <code>R9</code>.
</p>

<p>

R1 // load ptr/len pairs LMG dst+32(FP), R2, R3 // R2=base R3=len LMG src+56(FP), R4, R5 // R4=base R5=len LMG aad+80(FP), R6, R7 // R6=base R7=len // setup parameters MOVD cnt+112(FP), R8 XC $12, (R1), (R1) // reserved MVC $4, 12(R8), 12(R1) // set chain value MVC $16, (R8), 64(R1) // set initial counter value XC $32, 16(R1), 16(R1) // set hash subkey and tag SLD $3, R7, R12 MOVD R12, 48(R1) // set total AAD length SLD $3, R5, R12 MOVD R12, 56(R1) // set total plaintext/ciphertext length LMG key+8(FP),...

R1 // load ptr/len pairs LMG dst+32(FP), R2, R3 // R2=base R3=len LMG src+56(FP), R4, R5 // R4=base R5=len LMG aad+80(FP), R6, R7 // R6=base R7=len // setup parameters MOVD cnt+112(FP), R8 XC $12, (R1), (R1) // reserved MVC $4, 12(R8), 12(R1) // set chain value MVC $16, (R8), 64(R1) // set initial counter value XC $32, 16(R1), 16(R1) // set hash subkey and tag SLD $3, R7, R12 MOVD R12, 48(R1) // set total AAD length SLD $3, R5, R12 MOVD R12, 56(R1) // set total plaintext/ciphertext length LMG key+8(FP),...