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
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
|
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <time.h>
#include <stdbool.h>
#include <osmocom/core/utils.h>
#include <osmocom/core/bits.h>
static const uint8_t input[] = { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 };
static const uint8_t exp_out[] = { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 };
static char s[18];
enum END {LE, BE};
const char * end2str(enum END e) {
if (e == LE) return "LE";
return "BE";
}
/* convenience wrappers */
inline uint64_t load64(enum END e, const uint8_t *buf, unsigned nbytes) {
return (e == BE) ? osmo_load64be_ext(buf, nbytes) : osmo_load64le_ext(buf, nbytes);
}
inline uint32_t load32(enum END e, const uint8_t *buf, unsigned nbytes) {
return (e == BE) ? osmo_load32be_ext(buf, nbytes) : osmo_load32le_ext(buf, nbytes);
}
inline uint16_t load16(enum END e, const uint8_t *buf) {
return (e == BE) ? osmo_load16be(buf) : osmo_load16le(buf);
}
inline void store64(enum END e, uint64_t t, uint8_t *buf, unsigned nbytes) {
(e == BE) ? osmo_store64be_ext(t, buf, nbytes) : osmo_store64le_ext(t, buf, nbytes);
}
inline void store32(enum END e, uint64_t t, uint8_t *buf, unsigned nbytes) {
(e == BE) ? osmo_store32be_ext(t, buf, nbytes) : osmo_store32le_ext(t, buf, nbytes);
}
inline void store16(enum END e, uint64_t t, uint8_t *buf) {
(e == BE) ? osmo_store16be(t, buf) : osmo_store16le(t, buf);
}
/* helper functions */
inline bool printcheck(bool chk, unsigned nbytes, enum END e, bool b)
{
if (!chk) {
printf("%u %s FAILED", nbytes * 8, end2str(e));
return true;
}
printf("%u %s OK", nbytes * 8, end2str(e));
return b;
}
inline bool dumpcheck(const char *dump, const char *s, unsigned nbytes, bool chk, enum END e, bool b)
{
bool x = printcheck(chk, nbytes, e, b);
if (!dump) return x;
int m = memcmp(s, dump, nbytes);
if (0 == m) {
printf(", storage OK");
return x;
}
printf(", [%d]", m);
return true;
}
/* printcheckXX(): load/store 'test' and check against 'expected' value, compare to 'dump' buffer if given and print if necessary */
inline void printcheck64(enum END e, unsigned nbytes, uint64_t test, uint64_t expected, const char *dump, bool print)
{
uint8_t buf[nbytes];
store64(e, test, buf, nbytes);
char *s = osmo_hexdump_nospc(buf, nbytes);
uint64_t result = load64(e, buf, nbytes);
print = dumpcheck(dump, s, nbytes, result == expected, e, print);
if (print)
printf(": buffer %s known buffer %s loaded %.16" PRIx64 " expected %.16" PRIx64, s, dump, result, expected);
printf("\n");
}
inline void printcheck32(enum END e, unsigned nbytes, uint32_t test, uint32_t expected, const char *dump, bool print)
{
uint8_t buf[nbytes];
store32(e, test, buf, nbytes);
char *s = osmo_hexdump_nospc(buf, nbytes);
uint32_t result = load32(e, buf, nbytes);
print = dumpcheck(dump, s, nbytes, result == expected, e, print);
if (print)
printf(": buffer %s known buffer %s loaded %.8" PRIx32 " expected %.8" PRIx32, s, dump, result, expected);
printf("\n");
}
inline void printcheck16(enum END e, uint32_t test, uint32_t expected, const char *dump, bool print)
{
uint8_t buf[2];
store16(e, test, buf);
char *s = osmo_hexdump_nospc(buf, 2);
uint16_t result = load16(e, buf);
print = dumpcheck(dump, s, 2, result == expected, e, print);
if (print)
printf(": buffer %s known buffer %s loaded %.4" PRIx16 " expected %.4" PRIx16, s, dump, result, expected);
printf("\n");
}
/* compute expected value - zero excessive bytes */
inline uint64_t exp64(enum END e, unsigned nbytes, uint64_t value) {
uint8_t adj = 64 - nbytes * 8;
uint64_t v = value << adj;
return (e == LE) ? v >> adj : v;
}
inline uint32_t exp32(enum END e, unsigned nbytes, uint32_t value) {
uint8_t adj = 32 - nbytes * 8;
uint32_t v = value << adj;
return (e == LE) ? v >> adj : v;
}
/* run actual tests - if 'test' is 0 than generate random test value internally */
inline void check64(uint64_t test, uint64_t expected, unsigned nbytes, enum END e)
{
bool print = true;
if (0 == test && 0 == expected) {
test = ((uint64_t)rand() << 32) + rand();
expected = exp64(e, nbytes, test);
print = false;
}
snprintf(s, 17, "%.16" PRIx64, expected);
printcheck64(e, nbytes, test, expected, (BE == e) ? s : NULL, print);
}
inline void check32(uint32_t test, uint32_t expected, unsigned nbytes, enum END e)
{
bool print = true;
if (0 == test && 0 == expected) {
test = rand();
expected = exp32(e, nbytes, test);
print = false;
}
snprintf(s, 17, "%.8" PRIx32, expected);
printcheck32(e, nbytes, test, expected, (BE == e) ? s : NULL, print);
}
inline void check16(uint16_t test, enum END e)
{
bool print = true;
if (0 == test) {
test = (uint16_t)rand();
print = false;
}
snprintf(s, 17, "%.4" PRIx16, test);
printcheck16(e, test, test, (BE == e) ? s : NULL, print);
}
int main(int argc, char **argv)
{
uint8_t out[ARRAY_SIZE(input)];
unsigned int offs;
srand(time(NULL));
for (offs = 0; offs < sizeof(out); offs++) {
uint8_t *start = out + offs;
uint8_t len = sizeof(out) - offs;
memcpy(out, input, sizeof(out));
printf("INORDER: %s\n", osmo_hexdump(start, len));
osmo_revbytebits_buf(start, len);
printf("REVERSED: %s\n", osmo_hexdump(start, len));
if (memcmp(start, exp_out + offs, len)) {
printf("EXPECTED: %s\n", osmo_hexdump(exp_out+offs, len));
fprintf(stderr, "REVERSED != EXPECTED!\n");
exit(1);
}
printf("\n");
}
printf("checking byte packing...\n");
printf("running static tests...\n");
check64(0xDEADBEEFF00DCAFE, 0xDEADBEEFF00DCAFE, 8, BE);
check64(0xDEADBEEFF00DCAFE, 0xADBEEFF00DCAFE00, 7, BE);
check64(0xDEADBEEFF00DCAFE, 0xBEEFF00DCAFE0000, 6, BE);
check64(0xDEADBEEFF00DCAFE, 0xEFF00DCAFE000000, 5, BE);
check64(0xDEADBEEFF00DCAFE, 0xDEADBEEFF00DCAFE, 8, LE);
check64(0xDEADBEEFF00DCAFE, 0x00ADBEEFF00DCAFE, 7, LE);
check64(0xDEADBEEFF00DCAFE, 0x0000BEEFF00DCAFE, 6, LE);
check64(0xDEADBEEFF00DCAFE, 0x000000EFF00DCAFE, 5, LE);
check32(0xBABEFACE, 0xBABEFACE, 4, BE);
check32(0xBABEFACE, 0xBEFACE00, 3, BE);
check32(0xBABEFACE, 0xBABEFACE, 4, LE);
check32(0xBABEFACE, 0x00BEFACE, 3, LE);
check16(0xB00B, BE);
check16(0xB00B, LE);
printf("running random tests...\n");
check64(0, 0, 8, BE);
check64(0, 0, 7, BE);
check64(0, 0, 6, BE);
check64(0, 0, 5, BE);
check64(0, 0, 8, LE);
check64(0, 0, 7, LE);
check64(0, 0, 6, LE);
check64(0, 0, 5, LE);
check32(0, 0, 4, BE);
check32(0, 0, 3, BE);
check32(0, 0, 4, LE);
check32(0, 0, 3, LE);
check16(0, BE);
check16(0, LE);
return 0;
}
|
