1 // SPDX-License-Identifier: GPL-2.0-or-later OR Apache-2.0 2 /* 3 * Test cases for __ashldi3(), __ashrdi3(), and __lshrdi3(). 4 */ 5 6 #include <linux/array_size.h> 7 #include <linux/module.h> 8 #include <linux/libgcc.h> 9 #include <kunit/test.h> 10 11 struct shdi3_test_entry { 12 long long input; 13 int shift; 14 long long result; 15 }; 16 17 static const struct shdi3_test_entry ashldi3_testdata[] = { 18 /* https://github.com/llvm/llvm-project/compiler-rt/test/builtins/Unit/ashldi3_test.c */ 19 { 0x0123456789ABCDEFLL, 0, 0x123456789ABCDEFLL }, 20 { 0x0123456789ABCDEFLL, 1, 0x2468ACF13579BDELL }, 21 { 0x0123456789ABCDEFLL, 2, 0x48D159E26AF37BCLL }, 22 { 0x0123456789ABCDEFLL, 3, 0x91A2B3C4D5E6F78LL }, 23 { 0x0123456789ABCDEFLL, 4, 0x123456789ABCDEF0LL }, 24 { 0x0123456789ABCDEFLL, 28, 0x789ABCDEF0000000LL }, 25 { 0x0123456789ABCDEFLL, 29, 0xF13579BDE0000000LL }, 26 { 0x0123456789ABCDEFLL, 30, 0xE26AF37BC0000000LL }, 27 { 0x0123456789ABCDEFLL, 31, 0xC4D5E6F780000000LL }, 28 { 0x0123456789ABCDEFLL, 32, 0x89ABCDEF00000000LL }, 29 { 0x0123456789ABCDEFLL, 33, 0x13579BDE00000000LL }, 30 { 0x0123456789ABCDEFLL, 34, 0x26AF37BC00000000LL }, 31 { 0x0123456789ABCDEFLL, 35, 0x4D5E6F7800000000LL }, 32 { 0x0123456789ABCDEFLL, 36, 0x9ABCDEF000000000LL }, 33 { 0x0123456789ABCDEFLL, 60, 0xF000000000000000LL }, 34 { 0x0123456789ABCDEFLL, 61, 0xE000000000000000LL }, 35 { 0x0123456789ABCDEFLL, 62, 0xC000000000000000LL }, 36 { 0x0123456789ABCDEFLL, 63, 0x8000000000000000LL }, 37 }; 38 39 static void shdi3_test_ashldi3(struct kunit *test) 40 { 41 const struct shdi3_test_entry *e; 42 long long ret; 43 44 for (e = ashldi3_testdata; 45 e < ashldi3_testdata + ARRAY_SIZE(ashldi3_testdata); e++) { 46 ret = __ashldi3(e->input, e->shift); 47 KUNIT_EXPECT_EQ_MSG(test, ret, e->result, 48 " when evaluating __ashldi3(%lld, %d)", 49 e->input, e->shift); 50 } 51 } 52 53 static const struct shdi3_test_entry ashrdi3_testdata[] = { 54 /* https://github.com/llvm/llvm-project/compiler-rt/test/builtins/Unit/ashrdi3_test.c */ 55 { 0x0123456789ABCDEFLL, 0, 0x123456789ABCDEFLL }, 56 { 0x0123456789ABCDEFLL, 1, 0x91A2B3C4D5E6F7LL }, 57 { 0x0123456789ABCDEFLL, 2, 0x48D159E26AF37BLL }, 58 { 0x0123456789ABCDEFLL, 3, 0x2468ACF13579BDLL }, 59 { 0x0123456789ABCDEFLL, 4, 0x123456789ABCDELL }, 60 { 0x0123456789ABCDEFLL, 28, 0x12345678LL }, 61 { 0x0123456789ABCDEFLL, 29, 0x91A2B3CLL }, 62 { 0x0123456789ABCDEFLL, 30, 0x48D159ELL }, 63 { 0x0123456789ABCDEFLL, 31, 0x2468ACFLL }, 64 { 0x0123456789ABCDEFLL, 32, 0x1234567LL }, 65 { 0x0123456789ABCDEFLL, 33, 0x91A2B3LL }, 66 { 0x0123456789ABCDEFLL, 34, 0x48D159LL }, 67 { 0x0123456789ABCDEFLL, 35, 0x2468ACLL }, 68 { 0x0123456789ABCDEFLL, 36, 0x123456LL }, 69 { 0x0123456789ABCDEFLL, 60, 0 }, 70 { 0x0123456789ABCDEFLL, 61, 0 }, 71 { 0x0123456789ABCDEFLL, 62, 0 }, 72 { 0x0123456789ABCDEFLL, 63, 0 }, 73 { 0xFEDCBA9876543210LL, 0, 0xFEDCBA9876543210LL }, 74 { 0xFEDCBA9876543210LL, 1, 0xFF6E5D4C3B2A1908LL }, 75 { 0xFEDCBA9876543210LL, 2, 0xFFB72EA61D950C84LL }, 76 { 0xFEDCBA9876543210LL, 3, 0xFFDB97530ECA8642LL }, 77 { 0xFEDCBA9876543210LL, 4, 0xFFEDCBA987654321LL }, 78 { 0xFEDCBA9876543210LL, 28, 0xFFFFFFFFEDCBA987LL }, 79 { 0xFEDCBA9876543210LL, 29, 0xFFFFFFFFF6E5D4C3LL }, 80 { 0xFEDCBA9876543210LL, 30, 0xFFFFFFFFFB72EA61LL }, 81 { 0xFEDCBA9876543210LL, 31, 0xFFFFFFFFFDB97530LL }, 82 { 0xFEDCBA9876543210LL, 32, 0xFFFFFFFFFEDCBA98LL }, 83 { 0xFEDCBA9876543210LL, 33, 0xFFFFFFFFFF6E5D4CLL }, 84 { 0xFEDCBA9876543210LL, 34, 0xFFFFFFFFFFB72EA6LL }, 85 { 0xFEDCBA9876543210LL, 35, 0xFFFFFFFFFFDB9753LL }, 86 { 0xFEDCBA9876543210LL, 36, 0xFFFFFFFFFFEDCBA9LL }, 87 { 0xAEDCBA9876543210LL, 60, 0xFFFFFFFFFFFFFFFALL }, 88 { 0xAEDCBA9876543210LL, 61, 0xFFFFFFFFFFFFFFFDLL }, 89 { 0xAEDCBA9876543210LL, 62, 0xFFFFFFFFFFFFFFFELL }, 90 { 0xAEDCBA9876543210LL, 63, 0xFFFFFFFFFFFFFFFFLL }, 91 }; 92 93 static void shdi3_test_ashrdi3(struct kunit *test) 94 { 95 const struct shdi3_test_entry *e; 96 long long ret; 97 98 for (e = ashrdi3_testdata; 99 e < ashrdi3_testdata + ARRAY_SIZE(ashrdi3_testdata); e++) { 100 ret = __ashrdi3(e->input, e->shift); 101 KUNIT_EXPECT_EQ_MSG(test, ret, e->result, 102 " when evaluating __ashrdi3(%lld, %d)", 103 e->input, e->shift); 104 } 105 } 106 107 static const struct shdi3_test_entry lshrdi3_testdata[] = { 108 /* https://github.com/llvm/llvm-project/compiler-rt/test/builtins/Unit/lshrdi3_test.c */ 109 { 0x0123456789ABCDEFLL, 0, 0x123456789ABCDEFLL }, 110 { 0x0123456789ABCDEFLL, 1, 0x91A2B3C4D5E6F7LL }, 111 { 0x0123456789ABCDEFLL, 2, 0x48D159E26AF37BLL }, 112 { 0x0123456789ABCDEFLL, 3, 0x2468ACF13579BDLL }, 113 { 0x0123456789ABCDEFLL, 4, 0x123456789ABCDELL }, 114 { 0x0123456789ABCDEFLL, 28, 0x12345678LL }, 115 { 0x0123456789ABCDEFLL, 29, 0x91A2B3CLL }, 116 { 0x0123456789ABCDEFLL, 30, 0x48D159ELL }, 117 { 0x0123456789ABCDEFLL, 31, 0x2468ACFLL }, 118 { 0x0123456789ABCDEFLL, 32, 0x1234567LL }, 119 { 0x0123456789ABCDEFLL, 33, 0x91A2B3LL }, 120 { 0x0123456789ABCDEFLL, 34, 0x48D159LL }, 121 { 0x0123456789ABCDEFLL, 35, 0x2468ACLL }, 122 { 0x0123456789ABCDEFLL, 36, 0x123456LL }, 123 { 0x0123456789ABCDEFLL, 60, 0 }, 124 { 0x0123456789ABCDEFLL, 61, 0 }, 125 { 0x0123456789ABCDEFLL, 62, 0 }, 126 { 0x0123456789ABCDEFLL, 63, 0 }, 127 { 0xFEDCBA9876543210LL, 0, 0xFEDCBA9876543210LL }, 128 { 0xFEDCBA9876543210LL, 1, 0x7F6E5D4C3B2A1908LL }, 129 { 0xFEDCBA9876543210LL, 2, 0x3FB72EA61D950C84LL }, 130 { 0xFEDCBA9876543210LL, 3, 0x1FDB97530ECA8642LL }, 131 { 0xFEDCBA9876543210LL, 4, 0xFEDCBA987654321LL }, 132 { 0xFEDCBA9876543210LL, 28, 0xFEDCBA987LL }, 133 { 0xFEDCBA9876543210LL, 29, 0x7F6E5D4C3LL }, 134 { 0xFEDCBA9876543210LL, 30, 0x3FB72EA61LL }, 135 { 0xFEDCBA9876543210LL, 31, 0x1FDB97530LL }, 136 { 0xFEDCBA9876543210LL, 32, 0xFEDCBA98LL }, 137 { 0xFEDCBA9876543210LL, 33, 0x7F6E5D4CLL }, 138 { 0xFEDCBA9876543210LL, 34, 0x3FB72EA6LL }, 139 { 0xFEDCBA9876543210LL, 35, 0x1FDB9753LL }, 140 { 0xFEDCBA9876543210LL, 36, 0xFEDCBA9LL }, 141 { 0xAEDCBA9876543210LL, 60, 0xALL }, 142 { 0xAEDCBA9876543210LL, 61, 0x5LL }, 143 { 0xAEDCBA9876543210LL, 62, 0x2LL }, 144 { 0xAEDCBA9876543210LL, 63, 0x1LL }, 145 }; 146 147 static void shdi3_test_lshrdi3(struct kunit *test) 148 { 149 const struct shdi3_test_entry *e; 150 long long ret; 151 152 for (e = lshrdi3_testdata; 153 e < lshrdi3_testdata + ARRAY_SIZE(lshrdi3_testdata); e++) { 154 ret = __lshrdi3(e->input, e->shift); 155 KUNIT_EXPECT_EQ_MSG(test, ret, e->result, 156 " when evaluating __lshrdi3(%lld, %d)", 157 e->input, e->shift); 158 } 159 } 160 161 static struct kunit_case shdi3_test_cases[] = { 162 KUNIT_CASE(shdi3_test_ashldi3), 163 KUNIT_CASE(shdi3_test_ashrdi3), 164 KUNIT_CASE(shdi3_test_lshrdi3), 165 {} 166 }; 167 168 static struct kunit_suite shdi3_test_suite = { 169 .name = "shdi3", 170 .test_cases = shdi3_test_cases, 171 }; 172 kunit_test_suite(shdi3_test_suite); 173 174 MODULE_DESCRIPTION("Test cases for __ashldi3(), __ashrdi3(), and __lshrdi3()"); 175 MODULE_LICENSE("GPL"); 176