IPV6_JOIN_GROUP                = 0xc
	IPV6_LEAVE_GROUP               = 0xd
	IPV6_MAXHLIM                   = 0xff
	IPV6_MAXOPTHDR                 = 0x800
	IPV6_MAXPACKET                 = 0xffff
	IPV6_MAX_GROUP_SRC_FILTER      = 0x200
	IPV6_MAX_MEMBERSHIPS           = 0xfff
	IPV6_MAX_SOCK_SRC_FILTER       = 0x80
	IPV6_MMTU                      = 0x500
	IPV6_MSFILTER                  = 0x4a

		// Try converting MOVD $const,Rx into ADDIS/ORIS $s32>>16,R0,Rx
		switch {
		case isS32 && p.From.Offset&0xFFFF == 0 && p.From.Offset != 0:
			p.As = AADDIS
			p.From.Offset >>= 16
			p.Reg = REG_R0

		case isU32 && p.From.Offset&0xFFFF == 0 && p.From.Offset != 0:
			p.As = AORIS
			p.From.Offset >>= 16
			p.Reg = REG_R0

		case isS32 || isU32 || isS34:

// other known comparisons
(SGTconst [c] (MOVBreg _)) && 0x7f < c => (MOVVconst [1])
(SGTconst [c] (MOVBreg _)) && c <= -0x80 => (MOVVconst [0])
(SGTconst [c] (MOVBUreg _)) && 0xff < c => (MOVVconst [1])
(SGTconst [c] (MOVBUreg _)) && c < 0 => (MOVVconst [0])
(SGTUconst [c] (MOVBUreg _)) && 0xff < uint64(c) => (MOVVconst [1])
(SGTconst [c] (MOVHreg _)) && 0x7fff < c => (MOVVconst [1])

	return int64(x) >> 33
}

func testArithRightShiftConstOverflow(t *testing.T) {
	allSet := int64(-1)
	if got, want := rsh64x64ConstOverflow8(0x7f), int64(0); got != want {
		t.Errorf("rsh64x64ConstOverflow8 failed: got %v, want %v", got, want)
	}
	if got, want := rsh64x64ConstOverflow16(0x7fff), int64(0); got != want {
		t.Errorf("rsh64x64ConstOverflow16 failed: got %v, want %v", got, want)
	}

      0xffffffc, 0xfffe6, 0x3fffd2, 0xfffe7, 0xfffe8, 0x3fffd3, 0x3fffd4, 0x3fffd5, 0x7fffd9,
      0x3fffd6, 0x7fffda, 0x7fffdb, 0x7fffdc, 0x7fffdd, 0x7fffde, 0xffffeb, 0x7fffdf,
      0xffffec, 0xffffed, 0x3fffd7, 0x7fffe0, 0xffffee, 0x7fffe1, 0x7fffe2, 0x7fffe3,
      0x7fffe4, 0x1fffdc, 0x3fffd8, 0x7fffe5, 0x3fffd9, 0x7fffe6, 0x7fffe7, 0xffffef,

 * will never change.
 *
 * @see java.io.File
 */

public class SmbFile extends URLConnection implements SmbResource, SmbConstants {
    protected static final int ATTR_GET_MASK = 0x7FFF;
    protected static final int ATTR_SET_MASK = 0x30A7;
    protected static final int DEFAULT_ATTR_EXPIRATION_PERIOD = 5000;

    protected static final int HASH_DOT = ".".hashCode();

		default:
			return C_GOK
		}

		if c.instoffset >= 0 {
			if c.instoffset == 0 {
				return C_ZCON
			}
			if c.instoffset <= 0x7fff {
				return C_SCON
			}
			if c.instoffset <= 0xffff {
				return C_ANDCON
			}
			if c.instoffset&0xffff == 0 && isuint32(uint64(c.instoffset)) { /* && ((instoffset & (1<<31)) == 0) */
				return C_UCON
			}

}

var encodeTests = []encodeTest{
	{[]rune{1, 2, 3, 4}, []uint16{1, 2, 3, 4}},
	{[]rune{0xffff, 0x10000, 0x10001, 0x12345, 0x10ffff},
		[]uint16{0xffff, 0xd800, 0xdc00, 0xd800, 0xdc01, 0xd808, 0xdf45, 0xdbff, 0xdfff}},
	{[]rune{'a', 'b', 0xd7ff, 0xd800, 0xdfff, 0xe000, 0x110000, -1},
		[]uint16{'a', 'b', 0xd7ff, 0xfffd, 0xfffd, 0xe000, 0xfffd, 0xfffd}},
}

func TestEncode(t *testing.T) {
	for _, tt := range encodeTests {

(MOVWreg y:(AND (MOVDconst [c]) _)) && uint64(c) <= 0x7FFFFFFF => y

// small and of zero-extend => either zero-extend or small and
(ANDconst [c] y:(MOVBZreg _)) && c&0xFF == 0xFF => y
(ANDconst [0xFF] (MOVBreg x)) => (MOVBZreg x)
(ANDconst [c] y:(MOVHZreg _))  && c&0xFFFF == 0xFFFF => y
(ANDconst [0xFFFF] (MOVHreg x)) => (MOVHZreg x)

	return op | (i&0xFFFFF)<<5 | (r2&0x1F)<<0 // ui20, rd5
}

func OP_15I(op uint32, i uint32) uint32 {
	return op | (i&0x7FFF)<<0
}

// Encoding for the 'b' or 'bl' instruction.
func OP_B_BL(op uint32, i uint32) uint32 {
	return op | ((i & 0xFFFF) << 10) | ((i >> 16) & 0x3FF)
}

func (c *ctxt0) asmout(p *obj.Prog, o *Optab, out []uint32) {
	o1 := uint32(0)
	o2 := uint32(0)