drgba := dst0.RGBA64At(x, y)
								a := m - (uint32(srgba.A) * ma / m)
								dst0.SetRGBA64(x, y, color.RGBA64{
									R: uint16((uint32(drgba.R)*a + uint32(srgba.R)*ma) / m),
									G: uint16((uint32(drgba.G)*a + uint32(srgba.G)*ma) / m),
									B: uint16((uint32(drgba.B)*a + uint32(srgba.B)*ma) / m),
									A: uint16((uint32(drgba.A)*a + uint32(srgba.A)*ma) / m),
								})
							} else {

	uc_flags    uint32
	uc_link     *ucontextt
	uc_sigmask  sigset
	uc_stack    stackt
	_           [4]byte // EABI
	uc_mcontext mcontextt
	__uc_pad    [2]int32
}

type keventt struct {
	ident  uint32
	filter uint32
	flags  uint32
	fflags uint32
	data   int64
	udata  *byte
	_      [4]byte // EABI
}

// created by cgo -cdefs and then converted to Go

	return Timespec{Sec: sec, Nsec: int32(nsec)}
}

func setTimeval(sec, usec int64) Timeval {
	return Timeval{Sec: sec, Usec: int32(usec)}
}

func SetKevent(k *Kevent_t, fd, mode, flags int) {
	k.Ident = uint32(fd)
	k.Filter = uint32(mode)
	k.Flags = uint32(flags)
}

func (iov *Iovec) SetLen(length int) {
	iov.Len = uint32(length)
}

func (msghdr *Msghdr) SetControllen(length int) {

		} else {
			return false
		}
	case objabi.R_CALLARM:
		if siz == 4 {
			relocs := ldr.Relocs(s)
			r := relocs.At(ri)
			if r.Add()&0xff000000 == 0xeb000000 { // BL // TODO: using r.Add here is bad (issue 19811)
				out.Write32(uint32(elf.R_ARM_CALL) | uint32(elfsym)<<8)
			} else {
				out.Write32(uint32(elf.R_ARM_JUMP24) | uint32(elfsym)<<8)
			}
		} else {

		for i, x := range v {
			order.PutUint16(bs[2*i:], x)
		}
	case *int32:
		order.PutUint32(bs, uint32(*v))
	case int32:
		order.PutUint32(bs, uint32(v))
	case []int32:
		for i, x := range v {
			order.PutUint32(bs[4*i:], uint32(x))
		}
	case *uint32:
		order.PutUint32(bs, *v)
	case uint32:
		order.PutUint32(bs, v)
	case []uint32:
		for i, x := range v {
			order.PutUint32(bs[4*i:], x)
		}

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

const (
	_ESRCH     = 3
	_ETIMEDOUT = 60

	// From NetBSD's <sys/time.h>

//sys	regEnumValue(key syscall.Handle, index uint32, name *uint16, nameLen *uint32, reserved *uint32, valtype *uint32, buf *byte, buflen *uint32) (regerrno error) = advapi32.RegEnumValueW
//sys	regDeleteValue(key syscall.Handle, name *uint16) (regerrno error) = advapi32.RegDeleteValueW
//sys   regLoadMUIString(key syscall.Handle, name *uint16, buf *uint16, buflen uint32, buflenCopied *uint32, flags uint32, dir *uint16) (regerrno error) = advapi32.RegLoadMUIStringW

	MOVW	val+8(FP), R4
	LAO	R4, R6, 0(R3)        // R6 = *R3; *R3 |= R4; (atomic)
	RET

// func And(addr *uint32, v uint32)
TEXT ·And(SB), NOSPLIT, $0-12
	MOVD	ptr+0(FP), R3
	MOVW	val+8(FP), R4
	LAN	R4, R6, 0(R3)        // R6 = *R3; *R3 &= R4; (atomic)
	RET

// func Or32(addr *uint32, v uint32) old uint32
TEXT ·Or32(SB), NOSPLIT, $0-20
	MOVD	ptr+0(FP), R4
	MOVW	val+8(FP), R5
	MOVW	(R4), R3
repeat:

// Consider using the more ergonomic and less error-prone [Int32.And] instead.
func AndInt32(addr *int32, mask int32) (old int32)

// AndUint32 atomically performs a bitwise AND operation on *addr using the bitmask provided as mask
// and returns the old value.
// Consider using the more ergonomic and less error-prone [Uint32.And] instead.
func AndUint32(addr *uint32, mask uint32) (old uint32)

	return Timespec{Sec: sec, Nsec: int32(nsec)}
}

func setTimeval(sec, usec int64) Timeval {
	return Timeval{Sec: sec, Usec: int32(usec)}
}

func SetKevent(k *Kevent_t, fd, mode, flags int) {
	k.Ident = uint32(fd)
	k.Filter = uint32(mode)
	k.Flags = uint32(flags)
}

func (iov *Iovec) SetLen(length int) {
	iov.Len = uint32(length)
}

func (msghdr *Msghdr) SetControllen(length int) {