diff options
Diffstat (limited to 'qemu/tests/test-bitops.c')
-rw-r--r-- | qemu/tests/test-bitops.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/qemu/tests/test-bitops.c b/qemu/tests/test-bitops.c new file mode 100644 index 000000000..47b5d3ed9 --- /dev/null +++ b/qemu/tests/test-bitops.c @@ -0,0 +1,76 @@ +/* + * Test bitops routines + * + * This work is licensed under the terms of the GNU LGPL, version 2 or later. + * See the COPYING.LIB file in the top-level directory. + * + */ + +#include <glib.h> +#include <stdint.h> +#include "qemu/osdep.h" +#include "qemu/bitops.h" + +typedef struct { + uint32_t value; + int start; + int length; + int32_t result; +} S32Test; + +typedef struct { + uint64_t value; + int start; + int length; + int64_t result; +} S64Test; + +static const S32Test test_s32_data[] = { + { 0x38463983, 4, 4, -8 }, + { 0x38463983, 12, 8, 0x63 }, + { 0x38463983, 0, 32, 0x38463983 }, +}; + +static const S64Test test_s64_data[] = { + { 0x8459826734967223ULL, 60, 4, -8 }, + { 0x8459826734967223ULL, 0, 64, 0x8459826734967223LL }, +}; + +static void test_sextract32(void) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(test_s32_data); i++) { + const S32Test *test = &test_s32_data[i]; + int32_t r = sextract32(test->value, test->start, test->length); + + g_assert_cmpint(r, ==, test->result); + } +} + +static void test_sextract64(void) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(test_s32_data); i++) { + const S32Test *test = &test_s32_data[i]; + int64_t r = sextract64(test->value, test->start, test->length); + + g_assert_cmpint(r, ==, test->result); + } + + for (i = 0; i < ARRAY_SIZE(test_s64_data); i++) { + const S64Test *test = &test_s64_data[i]; + int64_t r = sextract64(test->value, test->start, test->length); + + g_assert_cmpint(r, ==, test->result); + } +} + +int main(int argc, char **argv) +{ + g_test_init(&argc, &argv, NULL); + g_test_add_func("/bitops/sextract32", test_sextract32); + g_test_add_func("/bitops/sextract64", test_sextract64); + return g_test_run(); +} |