1 /*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <gtest/gtest.h>
18
19 #include <linux/swab.h>
20
21 // This test makes sure that references to all of the kernel swab
22 // macros/inline functions that are exported work properly.
23 // Verifies that any kernel header updates do not break these macros.
TEST(linux_swab,smoke)24 TEST(linux_swab, smoke) {
25 EXPECT_EQ(0x3412U, __swab16(0x1234));
26 EXPECT_EQ(0x78563412U, __swab32(0x12345678U));
27 EXPECT_EQ(0xbaefcdab78563412ULL, __swab64(0x12345678abcdefbaULL));
28
29 __u16 bval16 = 0x1234;
30 EXPECT_EQ(0x3412U, __swab16p(&bval16));
31 __u32 bval32 = 0x12345678U;
32 EXPECT_EQ(0x78563412U, __swab32p(&bval32));
33 __u64 bval64 = 0x12345678abcdefbaULL;
34 EXPECT_EQ(0xbaefcdab78563412ULL, __swab64p(&bval64));
35
36 __u16 sval16 = 0x1234;
37 __swab16s(&sval16);
38 EXPECT_EQ(0x3412U, sval16);
39 __u32 sval32 = 0x12345678U;
40 __swab32s(&sval32);
41 EXPECT_EQ(0x78563412U, sval32);
42 __u64 sval64 = 0x12345678abcdefbaULL;
43 __swab64s(&sval64);
44 EXPECT_EQ(0xbaefcdab78563412ULL, sval64);
45
46 EXPECT_EQ(0x56781234U, __swahw32(0x12345678U));
47 EXPECT_EQ(0x34127856U, __swahb32(0x12345678U));
48
49 __u32 hval32 = 0x12345678U;
50 EXPECT_EQ(0x56781234U, __swahw32p(&hval32));
51 hval32 = 0x12345678U;
52 EXPECT_EQ(0x34127856U, __swahb32p(&hval32));
53
54 __u32 hsval32 = 0x12345678U;
55 __swahw32s(&hsval32);
56 EXPECT_EQ(0x56781234U, hsval32);
57 hsval32 = 0x12345678U;
58 __swahb32s(&hsval32);
59 EXPECT_EQ(0x34127856U, hsval32);
60 }
61