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
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2019 Heinrich Schuchardt <xypron.glpk@gmx.de>
*
* Unit tests for memory functions
*
* The architecture dependent implementations run through different lines of
* code depending on the alignment and length of memory regions copied or set.
* This has to be considered in testing.
*/
#include <common.h>
#include <command.h>
#include <log.h>
#include <test/lib.h>
#include <test/test.h>
#include <test/ut.h>
/* Xor mask used for marking memory regions */
#define MASK 0xA5
/* Number of different alignment values */
#define SWEEP 16
/* Allow for copying up to 32 bytes */
#define BUFLEN (SWEEP + 33)
/**
* init_buffer() - initialize buffer
*
* The buffer is filled with incrementing values xor'ed with the mask.
*
* @buf: buffer
* @mask: xor mask
*/
static void init_buffer(u8 buf[], u8 mask)
{
int i;
for (i = 0; i < BUFLEN; ++i)
buf[i] = i ^ mask;
}
/**
* test_memset() - test result of memset()
*
* @uts: unit test state
* @buf: buffer
* @mask: value set by memset()
* @offset: relative start of region changed by memset() in buffer
* @len: length of region changed by memset()
* Return: 0 = success, 1 = failure
*/
static int test_memset(struct unit_test_state *uts, u8 buf[], u8 mask,
int offset, int len)
{
int i;
for (i = 0; i < BUFLEN; ++i) {
if (i < offset || i >= offset + len) {
ut_asserteq(i, buf[i]);
} else {
ut_asserteq(mask, buf[i]);
}
}
return 0;
}
/**
* lib_memset() - unit test for memset()
*
* Test memset() with varied alignment and length of the changed buffer.
*
* @uts: unit test state
* Return: 0 = success, 1 = failure
*/
static int lib_memset(struct unit_test_state *uts)
{
u8 buf[BUFLEN];
int offset, len;
void *ptr;
for (offset = 0; offset <= SWEEP; ++offset) {
for (len = 1; len < BUFLEN - SWEEP; ++len) {
init_buffer(buf, 0);
ptr = memset(buf + offset, MASK, len);
ut_asserteq_ptr(buf + offset, (u8 *)ptr);
if (test_memset(uts, buf, MASK, offset, len)) {
debug("%s: failure %d, %d\n",
__func__, offset, len);
return CMD_RET_FAILURE;
}
}
}
return 0;
}
LIB_TEST(lib_memset, 0);
/**
* test_memmove() - test result of memcpy() or memmove()
*
* @uts: unit test state
* @buf: buffer
* @mask: xor mask used to initialize source buffer
* @offset1: relative start of copied region in source buffer
* @offset2: relative start of copied region in destination buffer
* @len: length of region changed by memset()
* Return: 0 = success, 1 = failure
*/
static int test_memmove(struct unit_test_state *uts, u8 buf[], u8 mask,
int offset1, int offset2, int len)
{
int i;
for (i = 0; i < BUFLEN; ++i) {
if (i < offset2 || i >= offset2 + len) {
ut_asserteq(i, buf[i]);
} else {
ut_asserteq((i + offset1 - offset2) ^ mask, buf[i]);
}
}
return 0;
}
/**
* lib_memcpy() - unit test for memcpy()
*
* Test memcpy() with varied alignment and length of the copied buffer.
*
* @uts: unit test state
* Return: 0 = success, 1 = failure
*/
static int lib_memcpy(struct unit_test_state *uts)
{
u8 buf1[BUFLEN];
u8 buf2[BUFLEN];
int offset1, offset2, len;
void *ptr;
init_buffer(buf1, MASK);
for (offset1 = 0; offset1 <= SWEEP; ++offset1) {
for (offset2 = 0; offset2 <= SWEEP; ++offset2) {
for (len = 1; len < BUFLEN - SWEEP; ++len) {
init_buffer(buf2, 0);
ptr = memcpy(buf2 + offset2, buf1 + offset1,
len);
ut_asserteq_ptr(buf2 + offset2, (u8 *)ptr);
if (test_memmove(uts, buf2, MASK, offset1,
offset2, len)) {
debug("%s: failure %d, %d, %d\n",
__func__, offset1, offset2, len);
return CMD_RET_FAILURE;
}
}
}
}
return 0;
}
LIB_TEST(lib_memcpy, 0);
/**
* lib_memmove() - unit test for memmove()
*
* Test memmove() with varied alignment and length of the copied buffer.
*
* @uts: unit test state
* Return: 0 = success, 1 = failure
*/
static int lib_memmove(struct unit_test_state *uts)
{
u8 buf[BUFLEN];
int offset1, offset2, len;
void *ptr;
for (offset1 = 0; offset1 <= SWEEP; ++offset1) {
for (offset2 = 0; offset2 <= SWEEP; ++offset2) {
for (len = 1; len < BUFLEN - SWEEP; ++len) {
init_buffer(buf, 0);
ptr = memmove(buf + offset2, buf + offset1,
len);
ut_asserteq_ptr(buf + offset2, (u8 *)ptr);
if (test_memmove(uts, buf, 0, offset1, offset2,
len)) {
debug("%s: failure %d, %d, %d\n",
__func__, offset1, offset2, len);
return CMD_RET_FAILURE;
}
}
}
}
return 0;
}
LIB_TEST(lib_memmove, 0);
|
