STMY	R1, R2, 4096(R3)        // eb1230000190

	XC	$8, (R15), n-8(SP)       // d707f010f000
	NC	$8, (R15), n-8(SP)       // d407f010f000
	OC	$8, (R15), n-8(SP)       // d607f010f000
	MVC	$8, (R15), n-8(SP)       // d207f010f000
	MVC	$256, 8192(R1), 8192(R2) // b90400a2c2a800002000b90400b1c2b800002000d2ffa000b000
	MVCIN	$8, (R15), n-8(SP)       // e807f010f000
	CLC	$8, (R15), n-8(SP)       // d507f000f010

<code>R5</code>, <code>R6</code> and <code>R7</code> with the 64-bit values at
<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>.

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), R8, R9 // R8=base R9=len MVC $16, (R8), 80(R1) // set key CMPBEQ R9, $16, kma MVC $8, 16(R8), 96(R1) CMPBEQ R9, $24, kma MVC $8, 24(R8), 104(R1) kma:...