return old
		}
	}
}

//go:noescape
func Xadd(ptr *uint32, delta int32) uint32

//go:noescape
func Xadduintptr(ptr *uintptr, delta uintptr) uintptr

//go:noescape
func Xchg(ptr *uint32, new uint32) uint32

//go:noescape
func Xchguintptr(ptr *uintptr, new uintptr) uintptr

//go:noescape
func Load(ptr *uint32) uint32

//go:noescape
func Load8(ptr *uint8) uint8

	frac uint64
}

type vdsoTimehands struct {
	algo         uint32
	gen          uint32
	scale        uint64
	offset_count uint32
	counter_mask uint32
	offset       bintime
	boottime     bintime
	physical     uint32
	res          [7]uint32
}

type vdsoTimekeep struct {
	ver       uint32
	enabled   uint32
	current   uint32
	pad_cgo_0 [4]byte
}

const (
	_VDSO_TK_VER_CURR = 0x1

	frac uint64
}

type vdsoTimehands struct {
	algo         uint32
	gen          uint32
	scale        uint64
	offset_count uint32
	counter_mask uint32
	offset       bintime
	boottime     bintime
	physical     uint32
	res          [7]uint32
}

type vdsoTimekeep struct {
	ver       uint32
	enabled   uint32
	current   uint32
	pad_cgo_0 [4]byte
}

const (
	_VDSO_TK_VER_CURR = 0x1

^uint32(0)/416 + 1, ^uint32(0)/448 + 1, ^uint32(0)/480 + 1, ^uint32(0)/512 + 1, ^uint32(0)/576 + 1, ^uint32(0)/640 + 1, ^uint32(0)/704 + 1, ^uint32(0)/768 + 1, ^uint32(0)/896 + 1, ^uint32(0)/1024 + 1, ^uint32(0)/1152 + 1, ^uint32(0)/1280 + 1, ^uint32(0)/1408 + 1, ^uint32(0)/1536 + 1, ^uint32(0)/1792 + 1, ^uint32(0)/2048 + 1, ^uint32(0)/2304 + 1, ^uint32(0)/2688 + 1, ^uint32(0)/3072 + 1, ^uint32(0)/3200 + 1, ^uint32(0)/3456 + 1, ^uint32(0)/4096 + 1, ^uint32(0)/4864 + 1, ^uint32(0)/5376 + 1, ^uint32(0)/6144 +...

	t.quantum = uint32(t.Data[6])
	t.ptrsize = uint32(t.Data[7])

	offset := func(word uint32) uint64 {
		return t.uintptr(t.Data[8+word*t.ptrsize:])
	}
	data := func(word uint32) []byte {
		return t.Data[offset(word):]
	}

	switch possibleVersion {
	case ver118, ver120:
		t.nfunctab = uint32(offset(0))
		t.nfiletab = uint32(offset(1))

	_HW_NCPUONLINE = 25
)

func sysctlInt(mib []uint32) (int32, bool) {
	var out int32
	nout := unsafe.Sizeof(out)
	ret := sysctl(&mib[0], uint32(len(mib)), (*byte)(unsafe.Pointer(&out)), &nout, nil, 0)
	if ret < 0 {
		return 0, false
	}
	return out, true
}

func sysctlUint64(mib []uint32) (uint64, bool) {
	var out uint64
	nout := unsafe.Sizeof(out)

//go:noescape
func sys_umtx_op(addr *uint32, mode int32, val uint32, uaddr1 uintptr, ut *umtx_time) int32

func osyield()

//go:nosplit
func osyield_no_g() {
	osyield()
}

func kqueue() int32

//go:noescape
func kevent(kq int32, ch *keventt, nch int32, ev *keventt, nev int32, ts *timespec) int32

func pipe2(flags int32) (r, w int32, errno int32)
func fcntl(fd, cmd, arg int32) (ret int32, errno int32)

func issetugid() int32

		ARM | uint32(elf.R_ARM_GOT32)<<16,
		ARM | uint32(elf.R_ARM_PLT32)<<16,
		ARM | uint32(elf.R_ARM_GOTOFF)<<16,
		ARM | uint32(elf.R_ARM_GOTPC)<<16,
		ARM | uint32(elf.R_ARM_THM_PC22)<<16,
		ARM | uint32(elf.R_ARM_REL32)<<16,
		ARM | uint32(elf.R_ARM_CALL)<<16,
		ARM | uint32(elf.R_ARM_V4BX)<<16,
		ARM | uint32(elf.R_ARM_GOT_PREL)<<16,
		ARM | uint32(elf.R_ARM_PC24)<<16,

// A Uint32 is an atomic uint32. The zero value is zero.
type Uint32 struct {
	_ noCopy
	v uint32
}

// Load atomically loads and returns the value stored in x.
func (x *Uint32) Load() uint32 { return LoadUint32(&x.v) }

// Store atomically stores val into x.
func (x *Uint32) Store(val uint32) { StoreUint32(&x.v, val) }

(Lsh8x64   x (Const64 [c])) && uint32(c) < 8  => (SLLconst x [int32(c)])
(Rsh8x64   x (Const64 [c])) && uint32(c) < 8  => (SRAconst (SLLconst <typ.UInt32> x [24]) [int32(c+24)])
(Rsh8Ux64  x (Const64 [c])) && uint32(c) < 8  => (SRLconst (SLLconst <typ.UInt32> x [24]) [int32(c+24)])

// large constant shifts
(Lsh32x64 _ (Const64 [c]))  && uint32(c) >= 32 => (MOVWconst [0])