CMOVQEQ SI, R13 ANDQ R14, AX SHRQ $0x01, R11, R10 SHRQ $0x01, R12, R11 SHRQ $0x01, R13, R12 SHRQ $0x01, AX, R13 MOVQ R10, 32(SP) MOVQ R11, 40(SP) MOVQ R12, 48(SP) MOVQ R13, 56(SP) // ////////// MOVQ (SP), R10 MOVQ 8(SP), R11 MOVQ 16(SP), R12 MOVQ 24(SP), R13 MOVQ 96(SP), R14 MOVQ 104(SP), R15 MOVQ 112(SP), DI MOVQ 120(SP), SI CALL p256MulInternal(SB) MOVQ R10, 96(SP) MOVQ R11, 104(SP) MOVQ R12, 112(SP) MOVQ R13, 120(SP) XORQ AX, AX ADDQ R10, R10 ADCQ R11, R11 ADCQ R12, R12 ADCQ R13, R13 ADCQ $+0, AX MOVQ...

	AMANDV		R14, (R13), R12 // acb96238
	AMORW		R14, (R13), R12 // ac396338
	AMORV		R14, (R13), R12 // acb96338
	AMXORW		R14, (R13), R12 // ac396438
	AMXORV		R14, (R13), R12 // acb96438
	AMMAXW		R14, (R13), R12 // ac396538
	AMMAXV		R14, (R13), R12 // acb96538
	AMMINW		R14, (R13), R12 // ac396638
	AMMINV		R14, (R13), R12 // acb96638
	AMMAXWU		R14, (R13), R12 // ac396738
	AMMAXVU		R14, (R13), R12 // acb96738

	//TODO LDTR -0x1e(R3), R4                  // 64285eb8
	//TODO LDTR -0xe5(R3), R10                 // 6ab851f8
	//TODO LDTRB 0xf0(R13), R10                // aa094f38
	//TODO LDTRH 0xe8(R13), R23                // b7894e78
	//TODO LDTRSB -0x24(R20), R5               // 85cadd38
	//TODO LDTRSB -0x75(R9), R13               // 2db99838
	//TODO LDTRSH 0xef(R3), LR                 // 7ef8ce78
	//TODO LDTRSH 0x96(R19), R24               // 786a8978

CMOVQEQ SI, R13 ANDQ R14, AX SHRQ $0x01, R11, R10 SHRQ $0x01, R12, R11 SHRQ $0x01, R13, R12 SHRQ $0x01, AX, R13 MOVQ R10, 32(SP) MOVQ R11, 40(SP) MOVQ R12, 48(SP) MOVQ R13, 56(SP) // ////////// MOVQ (SP), R10 MOVQ 8(SP), R11 MOVQ 16(SP), R12 MOVQ 24(SP), R13 MOVQ 96(SP), R14 MOVQ 104(SP), R15 MOVQ 112(SP), DI MOVQ 120(SP), SI CALL p256MulInternal(SB) MOVQ R10, 96(SP) MOVQ R11, 104(SP) MOVQ R12, 112(SP) MOVQ R13, 120(SP) XORQ AX, AX ADDQ R10, R10 ADCQ R11, R11 ADCQ R12, R12 ADCQ R13, R13 ADCQ $+0, AX MOVQ...

	VPGATHERQQ Y2, (BP)(Y7*2), Y1           // c4e2ed914c7d00
	VPGATHERQQ X12, (R13)(X14*2), X11       // c40299915c7500
	VPGATHERQQ Y12, (R13)(Y14*2), Y11       // c4029d915c7500
	VPGATHERQQ X2, (BP)(X7*2), X1           // c4e2e9914c7d00
	VPGATHERQQ Y2, (BP)(Y7*2), Y1           // c4e2ed914c7d00
	VPGATHERQQ X12, (R13)(X14*2), X11       // c40299915c7500
	VPGATHERQQ Y12, (R13)(Y14*2), Y11       // c4029d915c7500

	CSINV	HS, R1, R2, R3	// 232082da
	CSINVW	MI, R2, ZR, R2	// 42409f5a
	CINC	EQ, R4, R9	// 8914849a
	CINCW	PL, R2, ZR	// 5f44821a
	CINV	PL, R11, R22	// 76418bda
	CINVW	LS, R7, R13	// ed80875a
	CNEG	LS, R13, R7	// a7858dda
	CNEGW	EQ, R8, R13	// 0d15885a

// atomic ops
	LDARB	(R25), R2                            // 22ffdf08
	LDARH	(R5), R7                             // a7fcdf48

	VLD1	(R8)(R13), [V2.B16]                              // ERROR "illegal combination"
	VLD1	8(R9), [V2.B16]                                  // ERROR "illegal combination"
	VST1	[V1.B16], (R8)(R13)                              // ERROR "illegal combination"
	VST1	[V1.B16], 9(R2)                                  // ERROR "illegal combination"

	}
	register["LR"] = s390x.REG_LR
	// Pseudo-registers.
	register["SB"] = RSB
	register["FP"] = RFP
	register["PC"] = RPC
	// Avoid unintentionally clobbering g using R13.
	delete(register, "R13")
	register["g"] = s390x.REG_R13
	registerPrefix := map[string]bool{
		"AR": true,
		"F":  true,
		"R":  true,
	}

	instructions := make(map[string]obj.As)
	for i, s := range obj.Anames {

)

// Reads from a reader and rot13s the result.
type rot13Reader struct {
	r io.Reader
}

func newRot13Reader(r io.Reader) *rot13Reader {
	r13 := new(rot13Reader)
	r13.r = r
	return r13
}

func (r13 *rot13Reader) Read(p []byte) (int, error) {
	n, err := r13.r.Read(p)
	for i := 0; i < n; i++ {
		c := p[i] | 0x20 // lowercase byte
		if 'a' <= c && c <= 'm' {
			p[i] += 13
		} else if 'n' <= c && c <= 'z' {

The assembler uses them to hold temporary values when assembling some instructions.
</p>

<p>
<code>R13</code> points to the <code>g</code> (goroutine) structure.
This register must be referred to as <code>g</code>; the name <code>R13</code> is not recognized.
</p>

<p>
<code>R15</code> points to the stack frame and should typically only be accessed using the