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/*
* 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 "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);
}
}
typedef struct {
uint32_t unshuffled;
uint32_t shuffled;
} Shuffle32Test;
typedef struct {
uint64_t unshuffled;
uint64_t shuffled;
} Shuffle64Test;
static const Shuffle32Test test_shuffle32_data[] = {
{ 0x0000FFFF, 0x55555555 },
{ 0x000081C5, 0x40015011 },
};
static const Shuffle64Test test_shuffle64_data[] = {
{ 0x00000000FFFFFFFFULL, 0x5555555555555555ULL },
{ 0x00000000493AB02CULL, 0x1041054445000450ULL },
};
static void test_half_shuffle32(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(test_shuffle32_data); i++) {
const Shuffle32Test *test = &test_shuffle32_data[i];
uint32_t r = half_shuffle32(test->unshuffled);
g_assert_cmpint(r, ==, test->shuffled);
}
}
static void test_half_shuffle64(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(test_shuffle64_data); i++) {
const Shuffle64Test *test = &test_shuffle64_data[i];
uint64_t r = half_shuffle64(test->unshuffled);
g_assert_cmpint(r, ==, test->shuffled);
}
}
static void test_half_unshuffle32(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(test_shuffle32_data); i++) {
const Shuffle32Test *test = &test_shuffle32_data[i];
uint32_t r = half_unshuffle32(test->shuffled);
g_assert_cmpint(r, ==, test->unshuffled);
}
}
static void test_half_unshuffle64(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(test_shuffle64_data); i++) {
const Shuffle64Test *test = &test_shuffle64_data[i];
uint64_t r = half_unshuffle64(test->shuffled);
g_assert_cmpint(r, ==, test->unshuffled);
}
}
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);
g_test_add_func("/bitops/half_shuffle32", test_half_shuffle32);
g_test_add_func("/bitops/half_shuffle64", test_half_shuffle64);
g_test_add_func("/bitops/half_unshuffle32", test_half_unshuffle32);
g_test_add_func("/bitops/half_unshuffle64", test_half_unshuffle64);
return g_test_run();
}
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