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9#include "qemu/osdep.h"
10#include "qemu/int128.h"
11
12
13
14
15
16#if defined(__has_attribute)
17#if !__has_attribute(__noclone__)
18#define ATTRIBUTE_NOCLONE
19#endif
20#endif
21#ifndef ATTRIBUTE_NOCLONE
22#define ATTRIBUTE_NOCLONE __attribute__((__noclone__))
23#endif
24
25static uint32_t tests[8] = {
26 0x00000000, 0x00000001, 0x7FFFFFFE, 0x7FFFFFFF,
27 0x80000000, 0x80000001, 0xFFFFFFFE, 0xFFFFFFFF,
28};
29
30#define LOW 3ULL
31#define HIGH (1ULL << 63)
32#define MIDDLE (-1ULL & ~LOW & ~HIGH)
33
34static uint64_t expand16(unsigned x)
35{
36 return (x & LOW) | ((x & 4) ? MIDDLE : 0) | (x & 0x8000 ? HIGH : 0);
37}
38
39static Int128 expand(uint32_t x)
40{
41 uint64_t l, h;
42 l = expand16(x & 65535);
43 h = expand16(x >> 16);
44 return (Int128) int128_make128(l, h);
45};
46
47static void test_and(void)
48{
49 int i, j;
50
51 for (i = 0; i < ARRAY_SIZE(tests); ++i) {
52 for (j = 0; j < ARRAY_SIZE(tests); ++j) {
53 Int128 a = expand(tests[i]);
54 Int128 b = expand(tests[j]);
55 Int128 r = expand(tests[i] & tests[j]);
56 Int128 s = int128_and(a, b);
57 g_assert_cmpuint(int128_getlo(r), ==, int128_getlo(s));
58 g_assert_cmpuint(int128_gethi(r), ==, int128_gethi(s));
59 }
60 }
61}
62
63static void test_add(void)
64{
65 int i, j;
66
67 for (i = 0; i < ARRAY_SIZE(tests); ++i) {
68 for (j = 0; j < ARRAY_SIZE(tests); ++j) {
69 Int128 a = expand(tests[i]);
70 Int128 b = expand(tests[j]);
71 Int128 r = expand(tests[i] + tests[j]);
72 Int128 s = int128_add(a, b);
73 g_assert_cmpuint(int128_getlo(r), ==, int128_getlo(s));
74 g_assert_cmpuint(int128_gethi(r), ==, int128_gethi(s));
75 }
76 }
77}
78
79static void test_sub(void)
80{
81 int i, j;
82
83 for (i = 0; i < ARRAY_SIZE(tests); ++i) {
84 for (j = 0; j < ARRAY_SIZE(tests); ++j) {
85 Int128 a = expand(tests[i]);
86 Int128 b = expand(tests[j]);
87 Int128 r = expand(tests[i] - tests[j]);
88 Int128 s = int128_sub(a, b);
89 g_assert_cmpuint(int128_getlo(r), ==, int128_getlo(s));
90 g_assert_cmpuint(int128_gethi(r), ==, int128_gethi(s));
91 }
92 }
93}
94
95static void test_neg(void)
96{
97 int i;
98
99 for (i = 0; i < ARRAY_SIZE(tests); ++i) {
100 Int128 a = expand(tests[i]);
101 Int128 r = expand(-tests[i]);
102 Int128 s = int128_neg(a);
103 g_assert_cmpuint(int128_getlo(r), ==, int128_getlo(s));
104 g_assert_cmpuint(int128_gethi(r), ==, int128_gethi(s));
105 }
106}
107
108static void test_nz(void)
109{
110 int i, j;
111
112 for (i = 0; i < ARRAY_SIZE(tests); ++i) {
113 for (j = 0; j < ARRAY_SIZE(tests); ++j) {
114 Int128 a = expand(tests[i]);
115 g_assert_cmpuint(int128_nz(a), ==, tests[i] != 0);
116 }
117 }
118}
119
120static void test_le(void)
121{
122 int i, j;
123
124 for (i = 0; i < ARRAY_SIZE(tests); ++i) {
125 for (j = 0; j < ARRAY_SIZE(tests); ++j) {
126
127 int32_t a = (int32_t) tests[i];
128 int32_t b = (int32_t) tests[j];
129 g_assert_cmpuint(int128_le(expand(a), expand(b)), ==, a <= b);
130 }
131 }
132}
133
134static void test_lt(void)
135{
136 int i, j;
137
138 for (i = 0; i < ARRAY_SIZE(tests); ++i) {
139 for (j = 0; j < ARRAY_SIZE(tests); ++j) {
140
141 int32_t a = (int32_t) tests[i];
142 int32_t b = (int32_t) tests[j];
143 g_assert_cmpuint(int128_lt(expand(a), expand(b)), ==, a < b);
144 }
145 }
146}
147
148static void test_ge(void)
149{
150 int i, j;
151
152 for (i = 0; i < ARRAY_SIZE(tests); ++i) {
153 for (j = 0; j < ARRAY_SIZE(tests); ++j) {
154
155 int32_t a = (int32_t) tests[i];
156 int32_t b = (int32_t) tests[j];
157 g_assert_cmpuint(int128_ge(expand(a), expand(b)), ==, a >= b);
158 }
159 }
160}
161
162static void test_gt(void)
163{
164 int i, j;
165
166 for (i = 0; i < ARRAY_SIZE(tests); ++i) {
167 for (j = 0; j < ARRAY_SIZE(tests); ++j) {
168
169 int32_t a = (int32_t) tests[i];
170 int32_t b = (int32_t) tests[j];
171 g_assert_cmpuint(int128_gt(expand(a), expand(b)), ==, a > b);
172 }
173 }
174}
175
176
177
178static void __attribute__((__noinline__)) ATTRIBUTE_NOCLONE
179test_rshift_one(uint32_t x, int n, uint64_t h, uint64_t l)
180{
181 Int128 a = expand(x);
182 Int128 r = int128_rshift(a, n);
183 g_assert_cmpuint(int128_getlo(r), ==, l);
184 g_assert_cmpuint(int128_gethi(r), ==, h);
185}
186
187static void test_rshift(void)
188{
189 test_rshift_one(0x00010000U, 64, 0x0000000000000000ULL, 0x0000000000000001ULL);
190 test_rshift_one(0x80010000U, 64, 0xFFFFFFFFFFFFFFFFULL, 0x8000000000000001ULL);
191 test_rshift_one(0x7FFE0000U, 64, 0x0000000000000000ULL, 0x7FFFFFFFFFFFFFFEULL);
192 test_rshift_one(0xFFFE0000U, 64, 0xFFFFFFFFFFFFFFFFULL, 0xFFFFFFFFFFFFFFFEULL);
193 test_rshift_one(0x00010000U, 60, 0x0000000000000000ULL, 0x0000000000000010ULL);
194 test_rshift_one(0x80010000U, 60, 0xFFFFFFFFFFFFFFF8ULL, 0x0000000000000010ULL);
195 test_rshift_one(0x00018000U, 60, 0x0000000000000000ULL, 0x0000000000000018ULL);
196 test_rshift_one(0x80018000U, 60, 0xFFFFFFFFFFFFFFF8ULL, 0x0000000000000018ULL);
197 test_rshift_one(0x7FFE0000U, 60, 0x0000000000000007ULL, 0xFFFFFFFFFFFFFFE0ULL);
198 test_rshift_one(0xFFFE0000U, 60, 0xFFFFFFFFFFFFFFFFULL, 0xFFFFFFFFFFFFFFE0ULL);
199 test_rshift_one(0x7FFE8000U, 60, 0x0000000000000007ULL, 0xFFFFFFFFFFFFFFE8ULL);
200 test_rshift_one(0xFFFE8000U, 60, 0xFFFFFFFFFFFFFFFFULL, 0xFFFFFFFFFFFFFFE8ULL);
201 test_rshift_one(0x00018000U, 0, 0x0000000000000001ULL, 0x8000000000000000ULL);
202 test_rshift_one(0x80018000U, 0, 0x8000000000000001ULL, 0x8000000000000000ULL);
203 test_rshift_one(0x7FFE0000U, 0, 0x7FFFFFFFFFFFFFFEULL, 0x0000000000000000ULL);
204 test_rshift_one(0xFFFE0000U, 0, 0xFFFFFFFFFFFFFFFEULL, 0x0000000000000000ULL);
205 test_rshift_one(0x7FFE8000U, 0, 0x7FFFFFFFFFFFFFFEULL, 0x8000000000000000ULL);
206 test_rshift_one(0xFFFE8000U, 0, 0xFFFFFFFFFFFFFFFEULL, 0x8000000000000000ULL);
207}
208
209int main(int argc, char **argv)
210{
211 g_test_init(&argc, &argv, NULL);
212 g_test_add_func("/int128/int128_and", test_and);
213 g_test_add_func("/int128/int128_add", test_add);
214 g_test_add_func("/int128/int128_sub", test_sub);
215 g_test_add_func("/int128/int128_neg", test_neg);
216 g_test_add_func("/int128/int128_nz", test_nz);
217 g_test_add_func("/int128/int128_le", test_le);
218 g_test_add_func("/int128/int128_lt", test_lt);
219 g_test_add_func("/int128/int128_ge", test_ge);
220 g_test_add_func("/int128/int128_gt", test_gt);
221 g_test_add_func("/int128/int128_rshift", test_rshift);
222 return g_test_run();
223}
224
