1 /* 2 * Test bitops routines 3 * 4 * This work is licensed under the terms of the GNU LGPL, version 2 or later. 5 * See the COPYING.LIB file in the top-level directory. 6 * 7 */ 8 9 #include "qemu/osdep.h" 10 #include "qemu/bitops.h" 11 12 typedef struct { 13 uint32_t value; 14 int start; 15 int length; 16 int32_t result; 17 } S32Test; 18 19 typedef struct { 20 uint64_t value; 21 int start; 22 int length; 23 int64_t result; 24 } S64Test; 25 26 static const S32Test test_s32_data[] = { 27 { 0x38463983, 4, 4, -8 }, 28 { 0x38463983, 12, 8, 0x63 }, 29 { 0x38463983, 0, 32, 0x38463983 }, 30 }; 31 32 static const S64Test test_s64_data[] = { 33 { 0x8459826734967223ULL, 60, 4, -8 }, 34 { 0x8459826734967223ULL, 0, 64, 0x8459826734967223LL }, 35 }; 36 37 static void test_sextract32(void) 38 { 39 int i; 40 41 for (i = 0; i < ARRAY_SIZE(test_s32_data); i++) { 42 const S32Test *test = &test_s32_data[i]; 43 int32_t r = sextract32(test->value, test->start, test->length); 44 45 g_assert_cmpint(r, ==, test->result); 46 } 47 } 48 49 static void test_sextract64(void) 50 { 51 int i; 52 53 for (i = 0; i < ARRAY_SIZE(test_s32_data); i++) { 54 const S32Test *test = &test_s32_data[i]; 55 int64_t r = sextract64(test->value, test->start, test->length); 56 57 g_assert_cmpint(r, ==, test->result); 58 } 59 60 for (i = 0; i < ARRAY_SIZE(test_s64_data); i++) { 61 const S64Test *test = &test_s64_data[i]; 62 int64_t r = sextract64(test->value, test->start, test->length); 63 64 g_assert_cmpint(r, ==, test->result); 65 } 66 } 67 68 int main(int argc, char **argv) 69 { 70 g_test_init(&argc, &argv, NULL); 71 g_test_add_func("/bitops/sextract32", test_sextract32); 72 g_test_add_func("/bitops/sextract64", test_sextract64); 73 return g_test_run(); 74 } 75