147 lines
3.5 KiB
C
147 lines
3.5 KiB
C
/*
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* Test bitops routines
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*
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* This work is licensed under the terms of the GNU LGPL, version 2 or later.
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* See the COPYING.LIB file in the top-level directory.
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*
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*/
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#include "qemu/osdep.h"
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#include "qemu/bitops.h"
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typedef struct {
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uint32_t value;
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int start;
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int length;
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int32_t result;
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} S32Test;
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typedef struct {
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uint64_t value;
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int start;
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int length;
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int64_t result;
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} S64Test;
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static const S32Test test_s32_data[] = {
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{ 0x38463983, 4, 4, -8 },
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{ 0x38463983, 12, 8, 0x63 },
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{ 0x38463983, 0, 32, 0x38463983 },
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};
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static const S64Test test_s64_data[] = {
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{ 0x8459826734967223ULL, 60, 4, -8 },
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{ 0x8459826734967223ULL, 0, 64, 0x8459826734967223LL },
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};
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static void test_sextract32(void)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(test_s32_data); i++) {
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const S32Test *test = &test_s32_data[i];
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int32_t r = sextract32(test->value, test->start, test->length);
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g_assert_cmpint(r, ==, test->result);
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}
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}
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static void test_sextract64(void)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(test_s32_data); i++) {
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const S32Test *test = &test_s32_data[i];
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int64_t r = sextract64(test->value, test->start, test->length);
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g_assert_cmpint(r, ==, test->result);
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}
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for (i = 0; i < ARRAY_SIZE(test_s64_data); i++) {
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const S64Test *test = &test_s64_data[i];
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int64_t r = sextract64(test->value, test->start, test->length);
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g_assert_cmpint(r, ==, test->result);
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}
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}
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typedef struct {
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uint32_t unshuffled;
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uint32_t shuffled;
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} Shuffle32Test;
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typedef struct {
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uint64_t unshuffled;
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uint64_t shuffled;
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} Shuffle64Test;
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static const Shuffle32Test test_shuffle32_data[] = {
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{ 0x0000FFFF, 0x55555555 },
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{ 0x000081C5, 0x40015011 },
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};
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static const Shuffle64Test test_shuffle64_data[] = {
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{ 0x00000000FFFFFFFFULL, 0x5555555555555555ULL },
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{ 0x00000000493AB02CULL, 0x1041054445000450ULL },
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};
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static void test_half_shuffle32(void)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(test_shuffle32_data); i++) {
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const Shuffle32Test *test = &test_shuffle32_data[i];
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uint32_t r = half_shuffle32(test->unshuffled);
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g_assert_cmpint(r, ==, test->shuffled);
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}
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}
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static void test_half_shuffle64(void)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(test_shuffle64_data); i++) {
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const Shuffle64Test *test = &test_shuffle64_data[i];
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uint64_t r = half_shuffle64(test->unshuffled);
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g_assert_cmpint(r, ==, test->shuffled);
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}
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}
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static void test_half_unshuffle32(void)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(test_shuffle32_data); i++) {
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const Shuffle32Test *test = &test_shuffle32_data[i];
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uint32_t r = half_unshuffle32(test->shuffled);
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g_assert_cmpint(r, ==, test->unshuffled);
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}
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}
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static void test_half_unshuffle64(void)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(test_shuffle64_data); i++) {
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const Shuffle64Test *test = &test_shuffle64_data[i];
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uint64_t r = half_unshuffle64(test->shuffled);
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g_assert_cmpint(r, ==, test->unshuffled);
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}
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}
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int main(int argc, char **argv)
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{
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g_test_init(&argc, &argv, NULL);
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g_test_add_func("/bitops/sextract32", test_sextract32);
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g_test_add_func("/bitops/sextract64", test_sextract64);
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g_test_add_func("/bitops/half_shuffle32", test_half_shuffle32);
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g_test_add_func("/bitops/half_shuffle64", test_half_shuffle64);
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g_test_add_func("/bitops/half_unshuffle32", test_half_unshuffle32);
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g_test_add_func("/bitops/half_unshuffle64", test_half_unshuffle64);
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return g_test_run();
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}
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