// Rewrite mask to apply after the final left shift.
	mask_3 := (mask_1 & mask_2) << uint(GetPPC64Shiftsh(sld))

	r_1 := 32 - srw
	r_2 := GetPPC64Shiftsh(sld)
	r_3 := (r_1 + r_2) & 31 // This can wrap.

	if uint64(uint32(mask_3)) != mask_3 || mask_3 == 0 {
		return 0
	}
	return encodePPC64RotateMask(int64(r_3), int64(mask_3), 32)
}

		return rune(p0&mask2)<<6 | rune(b1&maskx), 2
	}
	b2 := p[2]
	if b2 < locb || hicb < b2 {
		return RuneError, 1
	}
	if sz <= 3 {
		return rune(p0&mask3)<<12 | rune(b1&maskx)<<6 | rune(b2&maskx), 3
	}
	b3 := p[3]
	if b3 < locb || hicb < b3 {
		return RuneError, 1
	}
	return rune(p0&mask4)<<18 | rune(b1&maskx)<<12 | rune(b2&maskx)<<6 | rune(b3&maskx), 4
}

					return
				}
			} else if mask0, ok := mask.(*image.Alpha); ok {
				switch src0 := src.(type) {
				case *image.Uniform:
					drawGlyphOver(dst0, r, src0, mask0, mp)
					return
				case *image.RGBA:
					drawRGBAMaskOver(dst0, r, src0, sp, mask0, mp)
					return
				case *image.Gray:
					drawGrayMaskOver(dst0, r, src0, sp, mask0, mp)
					return

		if i >= 56 {
			// we might have to write the length here if all fit in one block
			d.x[i] |= mask1b & length[i-56]
		}
	}

	// compress, and only keep the digest if all fit in one block
	block(d, d.x[:])

	var digest [Size]byte
	for i, s := range d.h {
		digest[i*4] = mask1b & byte(s>>24)
		digest[i*4+1] = mask1b & byte(s>>16)
		digest[i*4+2] = mask1b & byte(s>>8)

DATA masks<>+0xac(SB)/4, $0x00000000

DATA masks<>+0xb0(SB)/4, $0xffffffff
DATA masks<>+0xb4(SB)/4, $0xffffffff
DATA masks<>+0xb8(SB)/4, $0x00ffffff
DATA masks<>+0xbc(SB)/4, $0x00000000

DATA masks<>+0xc0(SB)/4, $0xffffffff
DATA masks<>+0xc4(SB)/4, $0xffffffff
DATA masks<>+0xc8(SB)/4, $0xffffffff
DATA masks<>+0xcc(SB)/4, $0x00000000

DATA masks<>+0xd0(SB)/4, $0xffffffff

									CacheSize:  pointer.Int32(10),
								},
							},
						},
					},
				},
			},
			expectedError: "resource \"secrets\" is masked by earlier rule \"*.\"",
		},
		{
			desc: "*. masked by *. group",
			config: &apiserver.EncryptionConfiguration{
				Resources: []apiserver.ResourceConfiguration{
					{
						Resources: []string{
							"*.",
						},

	ip, err := ParsePrefix(s)
	if err != nil {
		panic(err)
	}
	return ip
}

// Masked returns p in its canonical form, with all but the high
// p.Bits() bits of p.Addr() masked off.
//
// If p is zero or otherwise invalid, Masked returns the zero [Prefix].
func (p Prefix) Masked() Prefix {
	m, _ := p.ip.Prefix(p.Bits())
	return m
}

			masked: Prefix{},
		},
	}
	for _, test := range tests {
		t.Run(test.prefix.String(), func(t *testing.T) {
			got := test.prefix.Masked()
			if got != test.masked {
				t.Errorf("Masked=%s, want %s", got, test.masked)
			}
		})
	}
}

func TestPrefix(t *testing.T) {
	tests := []struct {
		prefix      string
		ip          Addr
		bits        int
		str         string

	var mask [gcmBlockSize]byte

	for len(in) >= gcmBlockSize {
		g.cipher.Encrypt(mask[:], counter[:])
		gcmInc32(counter)

		subtle.XORBytes(out, in, mask[:])
		out = out[gcmBlockSize:]
		in = in[gcmBlockSize:]
	}

	if len(in) > 0 {
		g.cipher.Encrypt(mask[:], counter[:])
		gcmInc32(counter)
		subtle.XORBytes(out, in, mask[:])
	}
}

	// the address of the first word referenced by mask.
	addr uintptr

	// mask is a bitmask where each bit corresponds to pointer-words after addr.
	// Bit 0 is the pointer-word at addr, Bit 1 is the next word, and so on.
	// If a bit is 1, then there is a pointer at that word.
	// nextFast and next mask out bits in this mask as their pointers are processed.
	mask uintptr