// amd64:`MOVL\s\([A-Z]+\)`,-`MOV[BW]`,-`OR`
	return uint32(b[0]) | uint32(b[2])<<16 | uint32(b[1])<<8 | uint32(b[3])<<24
}

func extraOr_load_uint32(b []byte, x, y uint32) uint32 {
	// amd64:`ORL\s\([A-Z]+\)`,-`MOV[BW]`
	return x | binary.LittleEndian.Uint32(b) | y
	// TODO: Note that
	//   x | uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24 | y

// Add p to the running checksum d.
func update(d digest, p []byte) digest {
	s1, s2 := uint32(d&0xffff), uint32(d>>16)
	for len(p) > 0 {
		var q []byte
		if len(p) > nmax {
			p, q = p[:nmax], p[nmax:]
		}
		for len(p) >= 4 {
			s1 += uint32(p[0])
			s2 += s1
			s1 += uint32(p[1])
			s2 += s1
			s1 += uint32(p[2])
			s2 += s1
			s1 += uint32(p[3])
			s2 += s1
			p = p[4:]
		}
		for _, x := range p {

	} else {
		uvdelta >>= 1
	}
	vdelta := int32(uvdelta)
	pcdelta := readvarint(p) * uint32(arch.MinLC)
	*pc += uint64(pcdelta)
	*val += vdelta
	return true
}

// readvarint reads, removes, and returns a varint from *p.
func readvarint(p *[]byte) uint32 {
	var v, shift uint32
	s := *p
	for shift = 0; ; shift += 7 {
		b := s[0]
		s = s[1:]
		v |= (uint32(b) & 0x7F) << shift
		if b&0x80 == 0 {
			break

func setTimespec(sec, nsec int64) Timespec {
	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 = int16(mode)
	k.Flags = uint16(flags)
}

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

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

	s := uint8(0)
	if value {
		s = 1
	}
	b.u.Store(s)
}

// Uint32 is an atomically accessed uint32 value.
//
// A Uint32 must not be copied.
type Uint32 struct {
	noCopy noCopy
	value  uint32
}

// Load accesses and returns the value atomically.
//
//go:nosplit
func (u *Uint32) Load() uint32 {
	return Load(&u.value)
}

// LoadAcquire is a partially unsynchronized version

	var x [32 / 4]uint32
	p := new([32 / 4]uint32)
	Escape(p)
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		*p = x
	}
}

func BenchmarkCopyFat64(b *testing.B) {
	var x [64 / 4]uint32
	p := new([64 / 4]uint32)
	Escape(p)
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		*p = x
	}
}

func BenchmarkCopyFat72(b *testing.B) {
	var x [72 / 4]uint32
	p := new([72 / 4]uint32)
	Escape(p)

	TIOCGETA = 0x62251713
)

type Winsize struct {
	Row    uint16
	Col    uint16
	Xpixel uint16
	Ypixel uint16
}

type Termios struct {
	Iflag  uint32
	Oflag  uint32
	Cflag  uint32
	Lflag  uint32
	Cc     [20]uint8
	Ispeed int32
	Ospeed int32

	return op | i&0xFFFF | uint32(r2&31)<<21 | uint32(r3&31)<<16
}

func OP_SRR(op uint32, s uint32, r2 int16, r3 int16) uint32 {
	return op | (s&31)<<6 | uint32(r2&31)<<16 | uint32(r3&31)<<11
}

func OP_FRRR(op uint32, r1 int16, r2 int16, r3 int16) uint32 {
	return op | uint32(r1&31)<<16 | uint32(r2&31)<<11 | uint32(r3&31)<<6
}

func OP_JMP(op uint32, i uint32) uint32 {

func setProcessCPUProfiler(hz int32) {}
func setThreadCPUProfiler(hz int32)  {}
func sigdisable(uint32)              {}
func sigenable(uint32)               {}
func sigignore(uint32)               {}

// Stubs so tests can link correctly. These should never be called.
func open(name *byte, mode, perm int32) int32        { panic("not implemented") }
func closefd(fd int32) int32                         { panic("not implemented") }

type elfShdr struct {
	sh_name      uint32 /* Section name (string tbl index) */
	sh_type      uint32 /* Section type */
	sh_flags     uint64 /* Section flags */
	sh_addr      uint64 /* Section virtual addr at execution */
	sh_offset    uint64 /* Section file offset */
	sh_size      uint64 /* Section size in bytes */
	sh_link      uint32 /* Link to another section */
	sh_info      uint32 /* Additional section information */