Fd      int32
	Events  int16
	Revents int16
}

const (
	POLLERR    = 0x8
	POLLHUP    = 0x10
	POLLIN     = 0x1
	POLLNVAL   = 0x20
	POLLOUT    = 0x4
	POLLPRI    = 0x2
	POLLRDBAND = 0x80
	POLLRDNORM = 0x40
	POLLWRBAND = 0x100
	POLLWRNORM = 0x4
)

type Sigset_t uint32

type Utsname struct {
	Sysname  [256]byte
	Nodename [256]byte
	Release  [256]byte
	Version  [256]byte

	Fd      int32
	Events  int16
	Revents int16
}

const (
	POLLERR    = 0x8
	POLLHUP    = 0x10
	POLLIN     = 0x1
	POLLNVAL   = 0x20
	POLLOUT    = 0x4
	POLLPRI    = 0x2
	POLLRDBAND = 0x80
	POLLRDNORM = 0x40
	POLLWRBAND = 0x100
	POLLWRNORM = 0x4
)

type Sigset_t uint32

type Utsname struct {
	Sysname  [256]byte
	Nodename [256]byte
	Release  [256]byte
	Version  [256]byte

	BVS	loop              // branch back if interrupted
	XOR	R0, R0
	MVC	$16, 0(R1), 0(R8) // update iv
	RET

// func xorBytes(dst, a, b []byte) int
TEXT ·xorBytes(SB),NOSPLIT,$0-80
	MOVD	dst_base+0(FP), R1
	MOVD	a_base+24(FP), R2
	MOVD	b_base+48(FP), R3
	MOVD	a_len+32(FP), R4
	MOVD	b_len+56(FP), R5
	CMPBLE	R4, R5, skip
	MOVD	R5, R4
skip:
	MOVD	R4, ret+72(FP)
	MOVD	$0, R5

	Revents int16
}

const (
	POLLERR      = 0x8
	POLLHUP      = 0x10
	POLLIN       = 0x1
	POLLINIGNEOF = 0x2000
	POLLNVAL     = 0x20
	POLLOUT      = 0x4
	POLLPRI      = 0x2
	POLLRDBAND   = 0x80
	POLLRDNORM   = 0x40
	POLLWRBAND   = 0x100
	POLLWRNORM   = 0x4
)

type CapRights struct {
	Rights [2]uint64
}

type Utsname struct {
	Sysname  [256]byte
	Nodename [256]byte

	Revents int16
}

const (
	POLLERR      = 0x8
	POLLHUP      = 0x10
	POLLIN       = 0x1
	POLLINIGNEOF = 0x2000
	POLLNVAL     = 0x20
	POLLOUT      = 0x4
	POLLPRI      = 0x2
	POLLRDBAND   = 0x80
	POLLRDNORM   = 0x40
	POLLWRBAND   = 0x100
	POLLWRNORM   = 0x4
)

type CapRights struct {
	Rights [2]uint64
}

type Utsname struct {
	Sysname  [256]byte
	Nodename [256]byte

  private const val BASE = 36
  private const val TMIN = 1
  private const val TMAX = 26
  private const val SKEW = 38
  private const val DAMP = 700
  private const val INITIAL_BIAS = 72
  private const val INITIAL_N = 0x80

  /**
   * Returns null if any label is oversized so much that the encoder cannot encode it without
   * integer overflow. This will not return null for labels that fit within the DNS size
   * limits.
   */

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
		}
	}
	*p = s
	return v
}

// We treat the whole object file as the text section.
func (f *goobjFile) text() (textStart uint64, text []byte, err error) {

		return 32
	case evexN64:
		return 64
	case evexN128:
		return 128
	}
	return 1
}

// EVEX is described by using 2-byte sequence.
// See evexBits for more details.
const (
	evexW   = 0x80 // b1[W... ....]
	evexWIG = 0 << 7
	evexW0  = 0 << 7
	evexW1  = 1 << 7

	evexM    = 0x30 // b2[..mm ...]
	evex0F   = 1 << 4
	evex0F38 = 2 << 4
	evex0F3A = 3 << 4

	evexL   = 0x0C // b1[.... LL..]

	// decoderInvalidCode.
	//
	// The 12 'y' bits form the 3841'st code, with value 0x101, the EOF code.
	//
	// The 'z' bit is unused.
	in := make([]byte, 5406)
	in = append(in, 0x80, 0xff, 0x0f, 0x08)

	r := NewReader(bytes.NewReader(in), LSB, 8)
	nDecoded, err := io.Copy(io.Discard, r)
	if err != nil {
		t.Fatalf("Copy: %v", err)
	}

00000280  5c ca bf e9 28 f1 76 ef  c5 72 5f 92 41 84 0e 64  |\...(.v..r_.A..d|
00000290  af 6f f4 94 23 0a b5 2d  8b 56 66 a8 6b bb 4f a9  |.o..#..-.Vf.k.O.|
000002a0  90 b6 d5 0a ab 76 7e 18  5c 3f 67 d5 7b c2 01 80  |.....v~.\?g.{...|
000002b0  ce c8 8e d4 cd 86 0b 90  84 3a 68 82 f4 46 bc 72  |.........:h..F.r|
000002c0  91 aa 92 46 e8 40 3e 40  21 c9 6a e5 d6 5a b2 01  |...F.@>@!.j..Z..|