g := 2 * uint64(uint32(d))
	return f, g
}

func checkCombinedShifts(v8 uint8, v16 uint16, v32 uint32, x32 int32, v64 uint64) (uint8, uint16, uint32, uint64, int64) {

	// ppc64x:-"AND","CLRLSLWI"
	f := (v8 & 0xF) << 2
	// ppc64x:"CLRLSLWI"
	f += byte(v16) << 3
	// ppc64x:-"AND","CLRLSLWI"
	g := (v16 & 0xFF) << 3
	// ppc64x:-"AND","CLRLSLWI"
	h := (v32 & 0xFFFFF) << 2
	// ppc64x:"CLRLSLDI"

		if (p.From.Offset &^ int64(SYSARG4(0x7, 0xF, 0xF, 0x7))) != 0 {
			c.ctxt.Diag("illegal SYS argument\n%v", p)
		}
		o1 |= uint32(p.From.Offset)
		if p.To.Type == obj.TYPE_REG {
			o1 |= uint32(p.To.Reg & 31)
		} else {
			o1 |= 0x1F
		}

	case 51: /* dmb */
		o1 = c.opirr(p, p.As)

		if p.From.Type == obj.TYPE_CONST {
			o1 |= uint32((p.From.Offset & 0xF) << 8)
		}

				// because they can lead to security holes when
				// user-controlled strings are rendered into JSON
				// and served to some browsers.
				dst = append(dst, '\\', 'u', '0', '0', hex[b>>4], hex[b&0xF])
			}
			i++
			start = i
			continue
		}
		// TODO(https://go.dev/issue/56948): Use generic utf8 functionality.
		// For now, cast only a small portion of byte slices to a string

	}
	return netip.AddrFrom16([16]byte(ip)).String()
}

func hexString(b []byte) string {
	s := make([]byte, len(b)*2)
	for i, tn := range b {
		s[i*2], s[i*2+1] = hexDigit[tn>>4], hexDigit[tn&0xf]
	}
	return string(s)
}

// ipEmptyString is like ip.String except that it returns
// an empty string when ip is unset.
func ipEmptyString(ip IP) string {
	if len(ip) == 0 {
		return ""
	}

	SO_RCVTIMEO_NEW                  = 0x42
	SO_RCVTIMEO_OLD                  = 0x14
	SO_RESERVE_MEM                   = 0x49
	SO_REUSEADDR                     = 0x2
	SO_REUSEPORT                     = 0xf
	SO_RXQ_OVFL                      = 0x28
	SO_SECURITY_AUTHENTICATION       = 0x16
	SO_SECURITY_ENCRYPTION_NETWORK   = 0x18
	SO_SECURITY_ENCRYPTION_TRANSPORT = 0x17
	SO_SELECT_ERR_QUEUE              = 0x2d

	MOVD	stackArgs+16(FP), R3;			\
	MOVWU	stackArgsSize+24(FP), R4;		\
	ADD	$8, RSP, R5;			\
	BIC	$0xf, R4, R6;			\
	CBZ	R6, 6(PC);			\
	/* if R6=(argsize&~15) != 0 */		\
	ADD	R6, R5, R6;			\
	/* copy 16 bytes a time */		\
	LDP.P	16(R3), (R7, R8);		\
	STP.P	(R7, R8), 16(R5);		\
	CMP	R5, R6;				\
	BNE	-3(PC);				\
	AND	$0xf, R4, R6;			\
	CBZ	R6, 6(PC);			\
	/* if R6=(argsize&15) != 0 */		\
	ADD	R6, R5, R6;			\

	Shndx uint16
}

const Sym32Size = 16

func ST_BIND(info uint8) SymBind { return SymBind(info >> 4) }
func ST_TYPE(info uint8) SymType { return SymType(info & 0xF) }
func ST_INFO(bind SymBind, typ SymType) uint8 {
	return uint8(bind)<<4 | uint8(typ)&0xf
}
func ST_VISIBILITY(other uint8) SymVis { return SymVis(other & 3) }

/*
 * ELF64
 */

// ELF64 file header.
type Header64 struct {

				}
			} else {
				width = len(string(c))
			}
			for j := 0; j < width; j++ {
				buf = append(buf, `\x`...)
				buf = append(buf, lowerhex[s[i+j]>>4])
				buf = append(buf, lowerhex[s[i+j]&0xF])
			}
		} else {
			if c == '"' || c == '\\' {
				buf = append(buf, '\\')
			}
			buf = append(buf, string(c)...)
		}
	}
	buf = append(buf, '"')
	return string(buf)
}

		rexX = regrex[rm.Index] & Rxx
	}
	vexM := (vex >> 3) & 0x7
	vexWLP := vex & 0x87
	vexV := byte(0)
	if v != nil {
		vexV = byte(reg[v.Reg]|(regrex[v.Reg]&Rxr)<<1) & 0xF
	}
	vexV ^= 0xF
	if vexM == 1 && (rexX|rexB) == 0 && vex&vexW1 == 0 {
		// Can use 2-byte encoding.
		ab.Put2(0xc5, byte(rexR<<5)^0x80|vexV<<3|vexWLP)
	} else {
		// Must use 3-byte encoding.
		ab.Put3(0xc4,

				return
			} else if !pr {
				continue
			}

			name := sf.name()
			file, line := iu.fileLine(uf)
			// Print during crash.
			//	main(0x1, 0x2, 0x3)
			//		/home/rsc/go/src/runtime/x.go:23 +0xf
			//
			printFuncName(name)
			print("(")
			if iu.isInlined(uf) {
				print("...")
			} else {
				argp := unsafe.Pointer(u.frame.argp)
				printArgs(f, argp, u.symPC())
			}
			print(")\n")