Line data Source code
1 : /* SPDX-License-Identifier: LGPL-2.1+ */
2 :
3 : #include "memory-util.h"
4 : #include "sparse-endian.h"
5 : #include "unaligned.h"
6 :
7 : static uint8_t data[] = {
8 : 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
9 : 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
10 : };
11 :
12 1 : static void test_be(void) {
13 : uint8_t scratch[16];
14 :
15 1 : assert_se(unaligned_read_be16(&data[0]) == 0x0001);
16 1 : assert_se(unaligned_read_be16(&data[1]) == 0x0102);
17 :
18 1 : assert_se(unaligned_read_be32(&data[0]) == 0x00010203);
19 1 : assert_se(unaligned_read_be32(&data[1]) == 0x01020304);
20 1 : assert_se(unaligned_read_be32(&data[2]) == 0x02030405);
21 1 : assert_se(unaligned_read_be32(&data[3]) == 0x03040506);
22 :
23 1 : assert_se(unaligned_read_be64(&data[0]) == 0x0001020304050607);
24 1 : assert_se(unaligned_read_be64(&data[1]) == 0x0102030405060708);
25 1 : assert_se(unaligned_read_be64(&data[2]) == 0x0203040506070809);
26 1 : assert_se(unaligned_read_be64(&data[3]) == 0x030405060708090a);
27 1 : assert_se(unaligned_read_be64(&data[4]) == 0x0405060708090a0b);
28 1 : assert_se(unaligned_read_be64(&data[5]) == 0x05060708090a0b0c);
29 1 : assert_se(unaligned_read_be64(&data[6]) == 0x060708090a0b0c0d);
30 1 : assert_se(unaligned_read_be64(&data[7]) == 0x0708090a0b0c0d0e);
31 :
32 1 : zero(scratch);
33 1 : unaligned_write_be16(&scratch[0], 0x0001);
34 1 : assert_se(memcmp(&scratch[0], &data[0], sizeof(uint16_t)) == 0);
35 1 : zero(scratch);
36 1 : unaligned_write_be16(&scratch[1], 0x0102);
37 1 : assert_se(memcmp(&scratch[1], &data[1], sizeof(uint16_t)) == 0);
38 :
39 1 : zero(scratch);
40 1 : unaligned_write_be32(&scratch[0], 0x00010203);
41 1 : assert_se(memcmp(&scratch[0], &data[0], sizeof(uint32_t)) == 0);
42 1 : zero(scratch);
43 1 : unaligned_write_be32(&scratch[1], 0x01020304);
44 1 : assert_se(memcmp(&scratch[1], &data[1], sizeof(uint32_t)) == 0);
45 1 : zero(scratch);
46 1 : unaligned_write_be32(&scratch[2], 0x02030405);
47 1 : assert_se(memcmp(&scratch[2], &data[2], sizeof(uint32_t)) == 0);
48 1 : zero(scratch);
49 1 : unaligned_write_be32(&scratch[3], 0x03040506);
50 1 : assert_se(memcmp(&scratch[3], &data[3], sizeof(uint32_t)) == 0);
51 :
52 1 : zero(scratch);
53 1 : unaligned_write_be64(&scratch[0], 0x0001020304050607);
54 1 : assert_se(memcmp(&scratch[0], &data[0], sizeof(uint64_t)) == 0);
55 1 : zero(scratch);
56 1 : unaligned_write_be64(&scratch[1], 0x0102030405060708);
57 1 : assert_se(memcmp(&scratch[1], &data[1], sizeof(uint64_t)) == 0);
58 1 : zero(scratch);
59 1 : unaligned_write_be64(&scratch[2], 0x0203040506070809);
60 1 : assert_se(memcmp(&scratch[2], &data[2], sizeof(uint64_t)) == 0);
61 1 : zero(scratch);
62 1 : unaligned_write_be64(&scratch[3], 0x030405060708090a);
63 1 : assert_se(memcmp(&scratch[3], &data[3], sizeof(uint64_t)) == 0);
64 1 : zero(scratch);
65 1 : unaligned_write_be64(&scratch[4], 0x0405060708090a0b);
66 1 : assert_se(memcmp(&scratch[4], &data[4], sizeof(uint64_t)) == 0);
67 1 : zero(scratch);
68 1 : unaligned_write_be64(&scratch[5], 0x05060708090a0b0c);
69 1 : assert_se(memcmp(&scratch[5], &data[5], sizeof(uint64_t)) == 0);
70 1 : zero(scratch);
71 1 : unaligned_write_be64(&scratch[6], 0x060708090a0b0c0d);
72 1 : assert_se(memcmp(&scratch[6], &data[6], sizeof(uint64_t)) == 0);
73 1 : zero(scratch);
74 1 : unaligned_write_be64(&scratch[7], 0x0708090a0b0c0d0e);
75 1 : assert_se(memcmp(&scratch[7], &data[7], sizeof(uint64_t)) == 0);
76 1 : }
77 :
78 1 : static void test_le(void) {
79 : uint8_t scratch[16];
80 :
81 1 : assert_se(unaligned_read_le16(&data[0]) == 0x0100);
82 1 : assert_se(unaligned_read_le16(&data[1]) == 0x0201);
83 :
84 1 : assert_se(unaligned_read_le32(&data[0]) == 0x03020100);
85 1 : assert_se(unaligned_read_le32(&data[1]) == 0x04030201);
86 1 : assert_se(unaligned_read_le32(&data[2]) == 0x05040302);
87 1 : assert_se(unaligned_read_le32(&data[3]) == 0x06050403);
88 :
89 1 : assert_se(unaligned_read_le64(&data[0]) == 0x0706050403020100);
90 1 : assert_se(unaligned_read_le64(&data[1]) == 0x0807060504030201);
91 1 : assert_se(unaligned_read_le64(&data[2]) == 0x0908070605040302);
92 1 : assert_se(unaligned_read_le64(&data[3]) == 0x0a09080706050403);
93 1 : assert_se(unaligned_read_le64(&data[4]) == 0x0b0a090807060504);
94 1 : assert_se(unaligned_read_le64(&data[5]) == 0x0c0b0a0908070605);
95 1 : assert_se(unaligned_read_le64(&data[6]) == 0x0d0c0b0a09080706);
96 1 : assert_se(unaligned_read_le64(&data[7]) == 0x0e0d0c0b0a090807);
97 :
98 1 : zero(scratch);
99 1 : unaligned_write_le16(&scratch[0], 0x0100);
100 1 : assert_se(memcmp(&scratch[0], &data[0], sizeof(uint16_t)) == 0);
101 1 : zero(scratch);
102 1 : unaligned_write_le16(&scratch[1], 0x0201);
103 1 : assert_se(memcmp(&scratch[1], &data[1], sizeof(uint16_t)) == 0);
104 :
105 1 : zero(scratch);
106 1 : unaligned_write_le32(&scratch[0], 0x03020100);
107 :
108 1 : assert_se(memcmp(&scratch[0], &data[0], sizeof(uint32_t)) == 0);
109 1 : zero(scratch);
110 1 : unaligned_write_le32(&scratch[1], 0x04030201);
111 1 : assert_se(memcmp(&scratch[1], &data[1], sizeof(uint32_t)) == 0);
112 1 : zero(scratch);
113 1 : unaligned_write_le32(&scratch[2], 0x05040302);
114 1 : assert_se(memcmp(&scratch[2], &data[2], sizeof(uint32_t)) == 0);
115 1 : zero(scratch);
116 1 : unaligned_write_le32(&scratch[3], 0x06050403);
117 1 : assert_se(memcmp(&scratch[3], &data[3], sizeof(uint32_t)) == 0);
118 :
119 1 : zero(scratch);
120 1 : unaligned_write_le64(&scratch[0], 0x0706050403020100);
121 1 : assert_se(memcmp(&scratch[0], &data[0], sizeof(uint64_t)) == 0);
122 1 : zero(scratch);
123 1 : unaligned_write_le64(&scratch[1], 0x0807060504030201);
124 1 : assert_se(memcmp(&scratch[1], &data[1], sizeof(uint64_t)) == 0);
125 1 : zero(scratch);
126 1 : unaligned_write_le64(&scratch[2], 0x0908070605040302);
127 1 : assert_se(memcmp(&scratch[2], &data[2], sizeof(uint64_t)) == 0);
128 1 : zero(scratch);
129 1 : unaligned_write_le64(&scratch[3], 0x0a09080706050403);
130 1 : assert_se(memcmp(&scratch[3], &data[3], sizeof(uint64_t)) == 0);
131 1 : zero(scratch);
132 1 : unaligned_write_le64(&scratch[4], 0x0B0A090807060504);
133 1 : assert_se(memcmp(&scratch[4], &data[4], sizeof(uint64_t)) == 0);
134 1 : zero(scratch);
135 1 : unaligned_write_le64(&scratch[5], 0x0c0b0a0908070605);
136 1 : assert_se(memcmp(&scratch[5], &data[5], sizeof(uint64_t)) == 0);
137 1 : zero(scratch);
138 1 : unaligned_write_le64(&scratch[6], 0x0d0c0b0a09080706);
139 1 : assert_se(memcmp(&scratch[6], &data[6], sizeof(uint64_t)) == 0);
140 1 : zero(scratch);
141 1 : unaligned_write_le64(&scratch[7], 0x0e0d0c0b0a090807);
142 1 : assert_se(memcmp(&scratch[7], &data[7], sizeof(uint64_t)) == 0);
143 1 : }
144 :
145 1 : static void test_ne(void) {
146 1 : uint16_t x = 4711;
147 1 : uint32_t y = 123456;
148 1 : uint64_t z = 9876543210;
149 :
150 : /* Note that we don't bother actually testing alignment issues in this function, after all the _ne() functions
151 : * are just aliases for the _le() or _be() implementations, which we test extensively above. Hence, in this
152 : * function, just ensure that they map to the right version on the local architecture. */
153 :
154 1 : assert_se(unaligned_read_ne16(&x) == 4711);
155 1 : assert_se(unaligned_read_ne32(&y) == 123456);
156 1 : assert_se(unaligned_read_ne64(&z) == 9876543210);
157 :
158 1 : unaligned_write_ne16(&x, 1);
159 1 : unaligned_write_ne32(&y, 2);
160 1 : unaligned_write_ne64(&z, 3);
161 :
162 1 : assert_se(x == 1);
163 1 : assert_se(y == 2);
164 1 : assert_se(z == 3);
165 1 : }
166 :
167 1 : int main(int argc, const char *argv[]) {
168 1 : test_be();
169 1 : test_le();
170 1 : test_ne();
171 1 : return 0;
172 : }
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