golden func(int16) int16
	}{
		{"x|x", func(x int16) int16 { return x | x }, id},
		{"x|0", func(x int16) int16 { return x | 0 }, id},
		{"x|-1", func(x int16) int16 { return x | -1 }, func(x int16) int16 { return -1 }},
		{"x&x", func(x int16) int16 { return x & x }, id},
		{"x&0", func(x int16) int16 { return x & 0 }, zero},
		{"x&-1", func(x int16) int16 { return x & -1 }, id},

}

type XSocket struct {
	Xso_len      uint32
	Xso_so       uint32
	So_type      int16
	So_options   int16
	So_linger    int16
	So_state     int16
	So_pcb       uint32
	Xso_protocol int32
	Xso_family   int32
	So_qlen      int16
	So_incqlen   int16
	So_qlimit    int16
	So_timeo     int16
	So_error     uint16
	So_pgid      int32
	So_oobmark   uint32
	So_rcv       XSockbuf

		}
		if want, got := int16(i)%int16(pow2[3]) == 0, divisible_int16_2to3(int16(i)); got != want {
			t.Errorf("divisible_int16_2to3(%d) = %v want %v", i, got, want)
		}
		if want, got := int16(i)%int16(pow2[4]) == 0, divisible_int16_2to4(int16(i)); got != want {
			t.Errorf("divisible_int16_2to4(%d) = %v want %v", i, got, want)
		}
		if want, got := int16(i)%int16(pow2[5]) == 0, divisible_int16_2to5(int16(i)); got != want {

        IN 1: R{ I3 } spilloffset: 8 typ: *struct { int16; int16; int16 }
        IN 2: R{ } offset: 0 typ: [7]*struct { int16; int16; int16 }
        IN 3: R{ F0 } spilloffset: 16 typ: float64
        IN 4: R{ I4 } spilloffset: 24 typ: int16
        IN 5: R{ I5 } spilloffset: 26 typ: int16
        IN 6: R{ I6 } spilloffset: 28 typ: int16

}

type XSocket struct {
	Xso_len      uint32
	Xso_so       uint32
	So_type      int16
	So_options   int16
	So_linger    int16
	So_state     int16
	So_pcb       uint32
	Xso_protocol int32
	Xso_family   int32
	So_qlen      int16
	So_incqlen   int16
	So_qlimit    int16
	So_timeo     int16
	So_error     uint16
	So_pgid      int32
	So_oobmark   uint32
	So_rcv       XSockbuf

	e.offset += 8
}

func (d *decoder) int8() int8 { return int8(d.uint8()) }

func (e *encoder) int8(x int8) { e.uint8(uint8(x)) }

func (d *decoder) int16() int16 { return int16(d.uint16()) }

func (e *encoder) int16(x int16) { e.uint16(uint16(x)) }

func (d *decoder) int32() int32 { return int32(d.uint32()) }

func (e *encoder) int32(x int32) { e.uint32(uint32(x)) }

	}
	return d, e
}

func NoFix16A(divr int16) (int16, int16) {
	var d int16 = 42
	var e int16 = 84
	if divr > 5 {
		// amd64:-"JMP"
		// 386:-"JMP"
		d /= divr
		// amd64:-"JMP"
		// 386:-"JMP"
		e %= divr
		d += e
	}
	return d, e
}

func NoFix16B(divd int16) (int16, int16) {
	var d int16
	var e int16
	var divr int16 = -1
	if divd > -32768 {
		// amd64:-"JMP"

	// ppc64x:-".*MOVW"
	f := int32(v >> 32)
	// ppc64x:".*MOVW"
	f += int32(v >> 31)
	// ppc64x:-".*MOVH"
	g := int16(v >> 48)
	// ppc64x:".*MOVH"
	g += int16(v >> 30)
	// ppc64x:-".*MOVH"
	g += int16(f >> 16)
	// ppc64x:-".*MOVB"
	h := int8(v >> 56)
	// ppc64x:".*MOVB"
	h += int8(v >> 28)
	// ppc64x:-".*MOVB"
	h += int8(f >> 24)
	// ppc64x:".*MOVB"

	Off       int64
	Reclen    uint16
	Type      uint8
	Name      [256]int8
	Pad_cgo_0 [5]byte
}

type Fsid struct {
	X__val [2]int32
}

type Flock_t struct {
	Type      int16
	Whence    int16
	Pad_cgo_0 [4]byte
	Start     int64
	Len       int64
	Pid       int32
	Pad_cgo_1 [4]byte
}

type RawSockaddrInet4 struct {
	Family uint16
	Port   uint16

// https://refspecs.linuxfoundation.org/ELF/zSeries/lzsabi0_zSeries/x1472.html
var S390XDWARFRegisters = map[int16]int16{}

func init() {
	// f assigns dwarfregisters[from:to by step] = (base):((to-from)/step+base)
	f := func(from, step, to, base int16) {
		for r := int16(from); r <= to; r += step {
			S390XDWARFRegisters[r] = (r-from)/step + base
		}
	}
	f(REG_R0, 1, REG_R15, 0)