SYS_MSGSND                         = 260
	SYS_MSGRCV                         = 261
	SYS_SHMAT                          = 262
	SYS_SHMCTL                         = 263
	SYS_SHMDT                          = 264
	SYS_SHMGET                         = 265
	SYS_SHM_OPEN                       = 266
	SYS_SHM_UNLINK                     = 267
	SYS_SEM_OPEN                       = 268
	SYS_SEM_CLOSE                      = 269

	SYS_MBIND                   = 259
	SYS_GET_MEMPOLICY           = 260
	SYS_SET_MEMPOLICY           = 261
	SYS_MQ_OPEN                 = 262
	SYS_MQ_UNLINK               = 263
	SYS_MQ_TIMEDSEND            = 264
	SYS_MQ_TIMEDRECEIVE         = 265
	SYS_MQ_NOTIFY               = 266
	SYS_MQ_GETSETATTR           = 267
	SYS_KEXEC_LOAD              = 268
	SYS_ADD_KEY                 = 269
	SYS_REQUEST_KEY             = 270

	SYS_TIMER_SETTIME                = 260
	SYS_TIMER_GETTIME                = 261
	SYS_TIMER_GETOVERRUN             = 262
	SYS_TIMER_DELETE                 = 263
	SYS_CLOCK_SETTIME                = 264
	SYS_CLOCK_GETTIME                = 265
	SYS_CLOCK_GETRES                 = 266
	SYS_CLOCK_NANOSLEEP              = 267
	SYS_STATFS64                     = 268
	SYS_FSTATFS64                    = 269

	ADDV(NONCE, X12, X13, X14, X15)

	// increment counters
	VAF INC, CTR, CTR

	// xor keystream with plaintext
	XORV(0*64, R2, R3, X0, X4,  X8, X12)
	XORV(1*64, R2, R3, X1, X5,  X9, X13)
	XORV(2*64, R2, R3, X2, X6, X10, X14)
	XORV(3*64, R2, R3, X3, X7, X11, X15)

	// increment pointers
	MOVD $256(R2), R2
	MOVD $256(R3), R3

	CMPBNE  R4, $0, chacha

	VSTEF $0, CTR, (R7)

	SYS_GET_MEMPOLICY                = 260
	SYS_SET_MEMPOLICY                = 261
	SYS_MQ_OPEN                      = 262
	SYS_MQ_UNLINK                    = 263
	SYS_MQ_TIMEDSEND                 = 264
	SYS_MQ_TIMEDRECEIVE              = 265
	SYS_MQ_NOTIFY                    = 266
	SYS_MQ_GETSETATTR                = 267
	SYS_KEXEC_LOAD                   = 268
	SYS_ADD_KEY                      = 269

		}
	}
}

func TestRFC6724CommonPrefixLength(t *testing.T) {
	tests := []struct {
		a    netip.Addr
		b    IP
		want int
	}{
		{netip.MustParseAddr("fe80::1"), ParseIP("fe80::2"), 64},
		{netip.MustParseAddr("fe81::1"), ParseIP("fe80::2"), 15},
		{netip.MustParseAddr("127.0.0.1"), ParseIP("fe80::1"), 0}, // diff size
		{netip.AddrFrom4([4]byte{1, 2, 3, 4}), IP{1, 2, 3, 4}, 32},

@ElementTypesAreNonnullByDefault
final class FarmHashFingerprint64 extends AbstractNonStreamingHashFunction {
  static final HashFunction FARMHASH_FINGERPRINT_64 = new FarmHashFingerprint64();

  // Some primes between 2^63 and 2^64 for various uses.
  private static final long K0 = 0xc3a5c85c97cb3127L;
  private static final long K1 = 0xb492b66fbe98f273L;
  private static final long K2 = 0x9ae16a3b2f90404fL;

  @Override

@ElementTypesAreNonnullByDefault
final class FarmHashFingerprint64 extends AbstractNonStreamingHashFunction {
  static final HashFunction FARMHASH_FINGERPRINT_64 = new FarmHashFingerprint64();

  // Some primes between 2^63 and 2^64 for various uses.
  private static final long K0 = 0xc3a5c85c97cb3127L;
  private static final long K1 = 0xb492b66fbe98f273L;
  private static final long K2 = 0x9ae16a3b2f90404fL;

  @Override

:HA#260:E	(a|ab|c|bcd){0,}(d*)	ababcd	(0,6)(3,6)(6,6)
:HA#261:E	(a|ab|c|bcd){1,}(d*)	ababcd	(0,6)(3,6)(6,6)
:HA#262:E	(a|ab|c|bcd){2,}(d*)	ababcd	(0,6)(3,6)(6,6)
:HA#263:E	(a|ab|c|bcd){3,}(d*)	ababcd	(0,6)(3,6)(6,6)
:HA#264:E	(a|ab|c|bcd){4,}(d*)	ababcd	NOMATCH
:HA#265:E	(a|ab|c|bcd){0,10}(d*)	ababcd	(0,6)(3,6)(6,6)
:HA#266:E	(a|ab|c|bcd){1,10}(d*)	ababcd	(0,6)(3,6)(6,6)
:HA#267:E	(a|ab|c|bcd){2,10}(d*)	ababcd	(0,6)(3,6)(6,6)

	} else if x == 259 {
		x += 259
	} else if x == 260 {
		x += 260
	} else if x == 261 {
		x += 261
	} else if x == 262 {
		x += 262
	} else if x == 263 {
		x += 263
	} else if x == 264 {
		x += 264
	} else if x == 265 {
		x += 265
	} else if x == 266 {
		x += 266
	} else if x == 267 {
		x += 267
	} else if x == 268 {
		x += 268
	} else if x == 269 {
		x += 269