cirrus: fix off-by-one in cirrus_bitblt_rop_bkwd_transp_*_16
[qemu.git] / tests / test-bitops.c
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 typedef struct {
69 uint32_t unshuffled;
70 uint32_t shuffled;
71 } Shuffle32Test;
72
73 typedef struct {
74 uint64_t unshuffled;
75 uint64_t shuffled;
76 } Shuffle64Test;
77
78 static const Shuffle32Test test_shuffle32_data[] = {
79 { 0x0000FFFF, 0x55555555 },
80 { 0x000081C5, 0x40015011 },
81 };
82
83 static const Shuffle64Test test_shuffle64_data[] = {
84 { 0x00000000FFFFFFFFULL, 0x5555555555555555ULL },
85 { 0x00000000493AB02CULL, 0x1041054445000450ULL },
86 };
87
88 static void test_half_shuffle32(void)
89 {
90 int i;
91
92 for (i = 0; i < ARRAY_SIZE(test_shuffle32_data); i++) {
93 const Shuffle32Test *test = &test_shuffle32_data[i];
94 uint32_t r = half_shuffle32(test->unshuffled);
95
96 g_assert_cmpint(r, ==, test->shuffled);
97 }
98 }
99
100 static void test_half_shuffle64(void)
101 {
102 int i;
103
104 for (i = 0; i < ARRAY_SIZE(test_shuffle64_data); i++) {
105 const Shuffle64Test *test = &test_shuffle64_data[i];
106 uint64_t r = half_shuffle64(test->unshuffled);
107
108 g_assert_cmpint(r, ==, test->shuffled);
109 }
110 }
111
112 static void test_half_unshuffle32(void)
113 {
114 int i;
115
116 for (i = 0; i < ARRAY_SIZE(test_shuffle32_data); i++) {
117 const Shuffle32Test *test = &test_shuffle32_data[i];
118 uint32_t r = half_unshuffle32(test->shuffled);
119
120 g_assert_cmpint(r, ==, test->unshuffled);
121 }
122 }
123
124 static void test_half_unshuffle64(void)
125 {
126 int i;
127
128 for (i = 0; i < ARRAY_SIZE(test_shuffle64_data); i++) {
129 const Shuffle64Test *test = &test_shuffle64_data[i];
130 uint64_t r = half_unshuffle64(test->shuffled);
131
132 g_assert_cmpint(r, ==, test->unshuffled);
133 }
134 }
135
136 int main(int argc, char **argv)
137 {
138 g_test_init(&argc, &argv, NULL);
139 g_test_add_func("/bitops/sextract32", test_sextract32);
140 g_test_add_func("/bitops/sextract64", test_sextract64);
141 g_test_add_func("/bitops/half_shuffle32", test_half_shuffle32);
142 g_test_add_func("/bitops/half_shuffle64", test_half_shuffle64);
143 g_test_add_func("/bitops/half_unshuffle32", test_half_unshuffle32);
144 g_test_add_func("/bitops/half_unshuffle64", test_half_unshuffle64);
145 return g_test_run();
146 }