| 1 | |
| 2 | |
| 3 | * Test cases for functions and macros in bits.h
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| 4 |
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| 5 |
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| 6 | #include <kunit/test.h>
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| 7 | #include <linux/bits.h>
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| 8 |
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| 9 |
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| 10 | static void genmask_test(struct kunit *test)
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| 11 | {
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| 12 | KUNIT_EXPECT_EQ(test, 1ul, GENMASK(0, 0));
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| 13 | KUNIT_EXPECT_EQ(test, 3ul, GENMASK(1, 0));
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| 14 | KUNIT_EXPECT_EQ(test, 6ul, GENMASK(2, 1));
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| 15 | KUNIT_EXPECT_EQ(test, 0xFFFFFFFFul, GENMASK(31, 0));
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| 16 |
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| 17 | #ifdef TEST_GENMASK_FAILURES
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| 18 |
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| 19 | GENMASK(0, 1);
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| 20 | GENMASK(0, 10);
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| 21 | GENMASK(9, 10);
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| 22 | #endif
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| 23 |
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| 24 |
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| 25 | }
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| 26 |
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| 27 | static void genmask_ull_test(struct kunit *test)
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| 28 | {
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| 29 | KUNIT_EXPECT_EQ(test, 1ull, GENMASK_ULL(0, 0));
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| 30 | KUNIT_EXPECT_EQ(test, 3ull, GENMASK_ULL(1, 0));
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| 31 | KUNIT_EXPECT_EQ(test, 0x000000ffffe00000ull, GENMASK_ULL(39, 21));
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| 32 | KUNIT_EXPECT_EQ(test, 0xffffffffffffffffull, GENMASK_ULL(63, 0));
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| 33 |
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| 34 | #ifdef TEST_GENMASK_FAILURES
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| 35 |
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| 36 | GENMASK_ULL(0, 1);
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| 37 | GENMASK_ULL(0, 10);
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| 38 | GENMASK_ULL(9, 10);
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| 39 | #endif
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| 40 | }
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| 41 |
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| 42 | static void genmask_input_check_test(struct kunit *test)
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| 43 | {
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| 44 | unsigned int x, y;
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| 45 | int z, w;
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| 46 |
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| 47 |
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| 48 | KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT_CHECK(x, 0));
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| 49 | KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT_CHECK(0, x));
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| 50 | KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT_CHECK(x, y));
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| 51 |
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| 52 | KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT_CHECK(z, 0));
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| 53 | KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT_CHECK(0, z));
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| 54 | KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT_CHECK(z, w));
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| 55 |
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| 56 |
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| 57 | KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT_CHECK(1, 1));
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| 58 | KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT_CHECK(39, 21));
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| 59 | }
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| 60 |
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| 61 |
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| 62 | static struct kunit_case bits_test_cases[] = {
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| 63 | KUNIT_CASE(genmask_test),
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| 64 | KUNIT_CASE(genmask_ull_test),
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| 65 | KUNIT_CASE(genmask_input_check_test),
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| 66 | {}
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| 67 | };
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| 68 |
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| 69 | static struct kunit_suite bits_test_suite = {
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| 70 | .name = "bits-test",
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| 71 | .test_cases = bits_test_cases,
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| 72 | };
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| 73 | kunit_test_suite(bits_test_suite);
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| 74 |
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| 75 | MODULE_LICENSE("GPL");
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