println("int32-4", ln2, ld2, ln2/ld2, ln2%ld2)
		panic("fail")
	}

	/* int64 */
	var qn1 int64 = +5
	var qn2 int64 = -5
	var qd1 int64 = +3
	var qd2 int64 = -3

	if qn1/qd1 != q1 || qn1%qd1 != r1 {
		println("int64-1", qn1, qd1, qn1/qd1, qn1%qd1)
		panic("fail")
	}
	if qn2/qd1 != q2 || qn2%qd1 != r2 {
		println("int64-2", qn2, qd1, qn2/qd1, qn2%qd1)
		panic("fail")
	}

	// 3x = 2x + x
	b.Run("3", func(b *testing.B) {
		x := uint64(1)
		for i := 0; i < b.N; i++ {
			x *= 3
		}
		mulSinkU64 = x
	})
	// 5x = 4x + x
	b.Run("5", func(b *testing.B) {
		x := uint64(1)
		for i := 0; i < b.N; i++ {
			x *= 5
		}
		mulSinkU64 = x
	})
	// 12x = 8x + 4x
	b.Run("12", func(b *testing.B) {
		x := uint64(1)
		for i := 0; i < b.N; i++ {
			x *= 12
		}

	return errno
}

func (r *PtraceRegs) PC() uint64 { return r.Pc }

func (r *PtraceRegs) SetPC(pc uint64) { r.Pc = pc }

func (iov *Iovec) SetLen(length int) {
	iov.Len = uint64(length)
}

func (msghdr *Msghdr) SetControllen(length int) {
	msghdr.Controllen = uint64(length)
}

func (cmsg *Cmsghdr) SetLen(length int) {
	cmsg.Len = uint64(length)
}

func InotifyInit() (fd int, err error) {

}

type HeapCountersArg struct {
	Allocated uint64
	NextGC    uint64
}

const (
	ProcsSection = 0 // where Goroutines or per-P timelines are presented.
	StatsSection = 1 // where counters are presented.
	TasksSection = 2 // where Task hierarchy & timeline is presented.
)

type GoroutineCountersArg struct {
	Running   uint64
	Runnable  uint64
	GCWaiting uint64
}

type ThreadCountersArg struct {

	}
	return arg.String()
}

func memArgToSymbol(a Mem, pc uint64, instrLen int, symname SymLookup) (string, int64) {
	if a.Segment != 0 || a.Disp == 0 || a.Index != 0 || a.Scale != 0 {
		return "", 0
	}

	var disp uint64
	switch a.Base {
	case IP, EIP, RIP:
		disp = uint64(a.Disp + int64(pc) + int64(instrLen))
	case 0:
		disp = uint64(a.Disp)
	default:
		return "", 0
	}

			go func() {
				defer wg.Done()
				ch <- Uint64()
			}()
		}
	case 2:
		// Start with Uint64 to pick the fast source, then call
		// Seed and Uint64 concurrently.
		ch <- Uint64()
		wg.Add(goroutines)
		for i := 0; i < goroutines; i++ {
			go func(s int64) {
				defer wg.Done()
				Seed(s)
			}(int64(i) + 100)
		}
		wg.Add(goroutines)
		for i := 0; i < goroutines; i++ {

		{"func(func(int))", reflect.TypeOf(func(func(int)) {}), false},
		{"int64", reflect.TypeOf(int64(1)), true},
		{"uint64", reflect.TypeOf(uint64(1)), true},
		{"*[4]int", reflect.TypeOf(&[4]int{}), true},
		{"chan int64", reflect.TypeOf(make(chan int64)), true},
		{"map[int]int", reflect.TypeOf(make(map[int]int)), true},
		{"string", reflect.TypeOf(""), true},

	}

	var shnum int
	var shoff, shentsize int64
	switch buf[4] {
	default:
		return "", errBadELF
	case 1: // 32-bit file header
		shoff = int64(byteOrder.Uint32(buf[32:]))
		shentsize = int64(byteOrder.Uint16(buf[46:]))
		if shentsize != 40 {
			return "", errBadELF
		}
		shnum = int(byteOrder.Uint16(buf[48:]))
	case 2: // 64-bit file header
		shoff = int64(byteOrder.Uint64(buf[40:]))

(ANDconst [c] x) && !isARM64bitcon(uint64(c)) => (AND x (MOVDconst [c]))
(ORconst  [c] x) && !isARM64bitcon(uint64(c))  => (OR  x (MOVDconst [c]))
(XORconst [c] x) && !isARM64bitcon(uint64(c))  => (XOR x (MOVDconst [c]))
(TSTconst [c] x) && !isARM64bitcon(uint64(c))  => (TST x (MOVDconst [c]))
(TSTWconst [c] x) && !isARM64bitcon(uint64(c)|uint64(c)<<32)  => (TSTW x (MOVDconst [int64(c)]))

	"unsafe"
)

func setTimespec(sec, nsec int64) Timespec {
	return Timespec{Sec: sec, Nsec: nsec}
}

func setTimeval(sec, usec int64) Timeval {
	return Timeval{Sec: sec, Usec: usec}
}

func SetKevent(k *Kevent_t, fd, mode, flags int) {
	k.Ident = uint64(fd)
	k.Filter = int16(mode)
	k.Flags = uint16(flags)
}

func (iov *Iovec) SetLen(length int) {
	iov.Len = uint64(length)
}