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[thirdparty/systemd.git] / src / test / test-unaligned.c
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f089257d
TG		 1/***
2 This file is part of systemd
3
4 Copyright 2014 Tom Gundersen
5
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
10
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
18***/
19
20#include "unaligned.h"
617e7946 21#include "sparse-endian.h"
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TG		 22#include "util.h"
23
24static uint8_t data[] = {
25 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
26 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
27};
28
7f034e98 29static void test_be(void) {
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TG		 30 uint8_t scratch[16];
31
617e7946
TG		 32 assert_se(unaligned_read_be16(&data[0]) == 0x0001);
33 assert_se(unaligned_read_be16(&data[1]) == 0x0102);
f089257d 34
617e7946
TG		 35 assert_se(unaligned_read_be32(&data[0]) == 0x00010203);
36 assert_se(unaligned_read_be32(&data[1]) == 0x01020304);
37 assert_se(unaligned_read_be32(&data[2]) == 0x02030405);
38 assert_se(unaligned_read_be32(&data[3]) == 0x03040506);
f089257d 39
617e7946
TG		 40 assert_se(unaligned_read_be64(&data[0]) == 0x0001020304050607);
41 assert_se(unaligned_read_be64(&data[1]) == 0x0102030405060708);
42 assert_se(unaligned_read_be64(&data[2]) == 0x0203040506070809);
43 assert_se(unaligned_read_be64(&data[3]) == 0x030405060708090a);
44 assert_se(unaligned_read_be64(&data[4]) == 0x0405060708090a0b);
45 assert_se(unaligned_read_be64(&data[5]) == 0x05060708090a0b0c);
46 assert_se(unaligned_read_be64(&data[6]) == 0x060708090a0b0c0d);
47 assert_se(unaligned_read_be64(&data[7]) == 0x0708090a0b0c0d0e);
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TG		 48
49 zero(scratch);
617e7946 50 unaligned_write_be16(&scratch[0], 0x0001);
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TG		 51 assert_se(memcmp(&scratch[0], &data[0], sizeof(uint16_t)) == 0);
52 zero(scratch);
617e7946 53 unaligned_write_be16(&scratch[1], 0x0102);
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TG		 54 assert_se(memcmp(&scratch[1], &data[1], sizeof(uint16_t)) == 0);
55
56 zero(scratch);
617e7946 57 unaligned_write_be32(&scratch[0], 0x00010203);
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TG		 58 assert_se(memcmp(&scratch[0], &data[0], sizeof(uint32_t)) == 0);
59 zero(scratch);
617e7946 60 unaligned_write_be32(&scratch[1], 0x01020304);
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TG		 61 assert_se(memcmp(&scratch[1], &data[1], sizeof(uint32_t)) == 0);
62 zero(scratch);
617e7946 63 unaligned_write_be32(&scratch[2], 0x02030405);
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TG		 64 assert_se(memcmp(&scratch[2], &data[2], sizeof(uint32_t)) == 0);
65 zero(scratch);
617e7946 66 unaligned_write_be32(&scratch[3], 0x03040506);
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TG		 67 assert_se(memcmp(&scratch[3], &data[3], sizeof(uint32_t)) == 0);
68
69 zero(scratch);
617e7946 70 unaligned_write_be64(&scratch[0], 0x0001020304050607);
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TG		 71 assert_se(memcmp(&scratch[0], &data[0], sizeof(uint64_t)) == 0);
72 zero(scratch);
617e7946 73 unaligned_write_be64(&scratch[1], 0x0102030405060708);
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TG		 74 assert_se(memcmp(&scratch[1], &data[1], sizeof(uint64_t)) == 0);
75 zero(scratch);
617e7946 76 unaligned_write_be64(&scratch[2], 0x0203040506070809);
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TG		 77 assert_se(memcmp(&scratch[2], &data[2], sizeof(uint64_t)) == 0);
78 zero(scratch);
617e7946 79 unaligned_write_be64(&scratch[3], 0x030405060708090a);
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TG		 80 assert_se(memcmp(&scratch[3], &data[3], sizeof(uint64_t)) == 0);
81 zero(scratch);
617e7946 82 unaligned_write_be64(&scratch[4], 0x0405060708090a0b);
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TG		 83 assert_se(memcmp(&scratch[4], &data[4], sizeof(uint64_t)) == 0);
84 zero(scratch);
617e7946 85 unaligned_write_be64(&scratch[5], 0x05060708090a0b0c);
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TG		 86 assert_se(memcmp(&scratch[5], &data[5], sizeof(uint64_t)) == 0);
87 zero(scratch);
617e7946 88 unaligned_write_be64(&scratch[6], 0x060708090a0b0c0d);
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TG		 89 assert_se(memcmp(&scratch[6], &data[6], sizeof(uint64_t)) == 0);
90 zero(scratch);
617e7946 91 unaligned_write_be64(&scratch[7], 0x0708090a0b0c0d0e);
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TG		 92 assert_se(memcmp(&scratch[7], &data[7], sizeof(uint64_t)) == 0);
93}
7f034e98
DM		 94
95static void test_le(void) {
96 uint8_t scratch[16];
97
98 assert_se(unaligned_read_le16(&data[0]) == 0x0100);
99 assert_se(unaligned_read_le16(&data[1]) == 0x0201);
100
101 assert_se(unaligned_read_le32(&data[0]) == 0x03020100);
102 assert_se(unaligned_read_le32(&data[1]) == 0x04030201);
103 assert_se(unaligned_read_le32(&data[2]) == 0x05040302);
104 assert_se(unaligned_read_le32(&data[3]) == 0x06050403);
105
106 assert_se(unaligned_read_le64(&data[0]) == 0x0706050403020100);
107 assert_se(unaligned_read_le64(&data[1]) == 0x0807060504030201);
108 assert_se(unaligned_read_le64(&data[2]) == 0x0908070605040302);
109 assert_se(unaligned_read_le64(&data[3]) == 0x0a09080706050403);
110 assert_se(unaligned_read_le64(&data[4]) == 0x0b0a090807060504);
111 assert_se(unaligned_read_le64(&data[5]) == 0x0c0b0a0908070605);
112 assert_se(unaligned_read_le64(&data[6]) == 0x0d0c0b0a09080706);
113 assert_se(unaligned_read_le64(&data[7]) == 0x0e0d0c0b0a090807);
114
115 zero(scratch);
116 unaligned_write_le16(&scratch[0], 0x0100);
117 assert_se(memcmp(&scratch[0], &data[0], sizeof(uint16_t)) == 0);
118 zero(scratch);
119 unaligned_write_le16(&scratch[1], 0x0201);
120 assert_se(memcmp(&scratch[1], &data[1], sizeof(uint16_t)) == 0);
121
122 zero(scratch);
123 unaligned_write_le32(&scratch[0], 0x03020100);
124
125 assert_se(memcmp(&scratch[0], &data[0], sizeof(uint32_t)) == 0);
126 zero(scratch);
127 unaligned_write_le32(&scratch[1], 0x04030201);
128 assert_se(memcmp(&scratch[1], &data[1], sizeof(uint32_t)) == 0);
129 zero(scratch);
130 unaligned_write_le32(&scratch[2], 0x05040302);
131 assert_se(memcmp(&scratch[2], &data[2], sizeof(uint32_t)) == 0);
132 zero(scratch);
133 unaligned_write_le32(&scratch[3], 0x06050403);
134 assert_se(memcmp(&scratch[3], &data[3], sizeof(uint32_t)) == 0);
135
136 zero(scratch);
137 unaligned_write_le64(&scratch[0], 0x0706050403020100);
138 assert_se(memcmp(&scratch[0], &data[0], sizeof(uint64_t)) == 0);
139 zero(scratch);
140 unaligned_write_le64(&scratch[1], 0x0807060504030201);
141 assert_se(memcmp(&scratch[1], &data[1], sizeof(uint64_t)) == 0);
142 zero(scratch);
143 unaligned_write_le64(&scratch[2], 0x0908070605040302);
144 assert_se(memcmp(&scratch[2], &data[2], sizeof(uint64_t)) == 0);
145 zero(scratch);
146 unaligned_write_le64(&scratch[3], 0x0a09080706050403);
147 assert_se(memcmp(&scratch[3], &data[3], sizeof(uint64_t)) == 0);
148 zero(scratch);
149 unaligned_write_le64(&scratch[4], 0x0B0A090807060504);
150 assert_se(memcmp(&scratch[4], &data[4], sizeof(uint64_t)) == 0);
151 zero(scratch);
152 unaligned_write_le64(&scratch[5], 0x0c0b0a0908070605);
153 assert_se(memcmp(&scratch[5], &data[5], sizeof(uint64_t)) == 0);
154 zero(scratch);
155 unaligned_write_le64(&scratch[6], 0x0d0c0b0a09080706);
156 assert_se(memcmp(&scratch[6], &data[6], sizeof(uint64_t)) == 0);
157 zero(scratch);
158 unaligned_write_le64(&scratch[7], 0x0e0d0c0b0a090807);
159 assert_se(memcmp(&scratch[7], &data[7], sizeof(uint64_t)) == 0);
160}
161
162int main(int argc, const char *argv[]) {
163 test_be();
164 test_le();
165}
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