summaryrefslogtreecommitdiffstats
path: root/tests/test-shift128.c
blob: f3ff736e5c54b7762097d4e3be80079cdb0df17f (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
/*
 * Test unsigned left and right shift
 *
 * 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/host-utils.h"

typedef struct {
    uint64_t low;
    uint64_t high;
    uint64_t rlow;
    uint64_t rhigh;
    int32_t shift;
    bool overflow;
} test_data;

static const test_data test_ltable[] = {
    { 0x4C7ULL, 0x0ULL, 0x00000000000004C7ULL,
      0x0000000000000000ULL,   0, false },
    { 0x001ULL, 0x0ULL, 0x0000000000000002ULL,
      0x0000000000000000ULL,   1, false },
    { 0x001ULL, 0x0ULL, 0x0000000000000004ULL,
      0x0000000000000000ULL,   2, false },
    { 0x001ULL, 0x0ULL, 0x0000000000000010ULL,
      0x0000000000000000ULL,   4, false },
    { 0x001ULL, 0x0ULL, 0x0000000000000100ULL,
      0x0000000000000000ULL,   8, false },
    { 0x001ULL, 0x0ULL, 0x0000000000010000ULL,
      0x0000000000000000ULL,  16, false },
    { 0x001ULL, 0x0ULL, 0x0000000080000000ULL,
      0x0000000000000000ULL,  31, false },
    { 0x001ULL, 0x0ULL, 0x0000200000000000ULL,
      0x0000000000000000ULL,  45, false },
    { 0x001ULL, 0x0ULL, 0x1000000000000000ULL,
      0x0000000000000000ULL,  60, false },
    { 0x001ULL, 0x0ULL, 0x0000000000000000ULL,
      0x0000000000000001ULL,  64, false },
    { 0x001ULL, 0x0ULL, 0x0000000000000000ULL,
      0x0000000000010000ULL,  80, false },
    { 0x001ULL, 0x0ULL, 0x0000000000000000ULL,
      0x8000000000000000ULL, 127, false },
    { 0x000ULL, 0x1ULL, 0x0000000000000000ULL,
      0x0000000000000000ULL,  64,  true },
    { 0x008ULL, 0x0ULL, 0x0000000000000000ULL,
      0x0000000000000008ULL,  64, false },
    { 0x008ULL, 0x0ULL, 0x0000000000000000ULL,
      0x8000000000000000ULL, 124, false },
    { 0x001ULL, 0x0ULL, 0x0000000000000000ULL,
      0x4000000000000000ULL, 126, false },
    { 0x001ULL, 0x0ULL, 0x0000000000000000ULL,
      0x8000000000000000ULL, 127, false },
    { 0x001ULL, 0x0ULL, 0x0000000000000001ULL,
      0x0000000000000000ULL, 128,  false },
    { 0x000ULL, 0x0ULL, 0x0000000000000000ULL,
      0x0000000000000000ULL, 200, false },
    { 0x001ULL, 0x0ULL, 0x0000000000000000ULL,
      0x0000000000000100ULL, 200,  false },
    { 0x001ULL, 0x0ULL, 0x0000000000000000ULL,
      0x8000000000000000ULL,  -1, false },
    { 0x001ULL, 0x0ULL, 0x0000000000000000ULL,
      0x8000000000000000ULL, INT32_MAX, false },
    { 0x001ULL, 0x0ULL, 0x0000000000000000ULL,
      0x4000000000000000ULL,  -2, false },
    { 0x001ULL, 0x0ULL, 0x0000000000000000ULL,
      0x4000000000000000ULL, INT32_MAX - 1, false },
    { 0x8888888888888888ULL, 0x9999999999999999ULL,
      0x8000000000000000ULL, 0x9888888888888888ULL, 60, true },
    { 0x8888888888888888ULL, 0x9999999999999999ULL,
      0x0000000000000000ULL, 0x8888888888888888ULL, 64, true },
};

static const test_data test_rtable[] = {
    { 0x00000000000004C7ULL, 0x0ULL, 0x00000000000004C7ULL, 0x0ULL,  0, false },
    { 0x0800000000000000ULL, 0x0ULL, 0x0400000000000000ULL, 0x0ULL,  1, false },
    { 0x0800000000000000ULL, 0x0ULL, 0x0200000000000000ULL, 0x0ULL,  2, false },
    { 0x0800000000000000ULL, 0x0ULL, 0x0008000000000000ULL, 0x0ULL,  8, false },
    { 0x0800000000000000ULL, 0x0ULL, 0x0000080000000000ULL, 0x0ULL, 16, false },
    { 0x0800000000000000ULL, 0x0ULL, 0x0000000008000000ULL, 0x0ULL, 32, false },
    { 0x8000000000000000ULL, 0x0ULL, 0x0000000000000001ULL, 0x0ULL, 63, false },
    { 0x8000000000000000ULL, 0x0ULL, 0x0000000000000000ULL, 0x0ULL, 64, false },
    { 0x0000000000000000ULL, 0x8000000000000000ULL,
      0x0000000000000000ULL, 0x8000000000000000ULL, 128, false },
    { 0x0000000000000000ULL, 0x8000000000000000ULL,
      0x0080000000000000ULL, 0x0000000000000000ULL, 200, false },
    { 0x0000000000000000ULL, 0x0000000000000000ULL,
      0x0000000000000000ULL, 0x0000000000000000ULL, 200, false },
    { 0x0000000000000000ULL, 0x8000000000000000ULL,
      0x0000000000000000ULL, 0x0000000000000080ULL, -200, false },
    { 0x8000000000000000ULL, 0x8000000000000000ULL,
      0x0000000080000000ULL, 0x0000000080000000ULL, 32, false },
    { 0x0800000000000000ULL, 0x0800000000000000ULL,
      0x0800000000000000ULL, 0x0000000000000000ULL, 64, false },
    { 0x0800000000000000ULL, 0x0800000000000000ULL,
      0x0008000000000000ULL, 0x0000000000000000ULL, 72, false },
    { 0x8000000000000000ULL, 0x8000000000000000ULL,
      0x0000000000000001ULL, 0x0000000000000000ULL, 127, false },
    { 0x0000000000000000ULL, 0x8000000000000000ULL,
      0x0000000000000001ULL, 0x0000000000000000ULL, -1, false },
    { 0x0000000000000000ULL, 0x8000000000000000ULL,
      0x0000000000000002ULL, 0x0000000000000000ULL, -2, false },
};

static void test_lshift(void)
{
    int i;

    for (i = 0; i < ARRAY_SIZE(test_ltable); ++i) {
        bool overflow = false;
        test_data tmp = test_ltable[i];
        ulshift(&tmp.low, &tmp.high, tmp.shift, &overflow);
        g_assert_cmpuint(tmp.low, ==, tmp.rlow);
        g_assert_cmpuint(tmp.high, ==, tmp.rhigh);
        g_assert_cmpuint(tmp.overflow, ==, overflow);
    }
}

static void test_rshift(void)
{
    int i;

    for (i = 0; i < ARRAY_SIZE(test_rtable); ++i) {
        test_data tmp = test_rtable[i];
        urshift(&tmp.low, &tmp.high, tmp.shift);
        g_assert_cmpuint(tmp.low, ==, tmp.rlow);
        g_assert_cmpuint(tmp.high, ==, tmp.rhigh);
    }
}

int main(int argc, char **argv)
{
    g_test_init(&argc, &argv, NULL);
    g_test_add_func("/host-utils/test_lshift", test_lshift);
    g_test_add_func("/host-utils/test_rshift", test_rshift);
    return g_test_run();
}