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
253
254
255
256
257
258
259
260
261
262
263
264
265
|
/* Copyright 2022 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "common.h"
#include "panic.h"
#include "system.h"
#include "task.h"
#include "test_util.h"
#include <stdlib.h>
/*
* trapping addition: __addvsi3.
*/
test_static int test_ftrapv_addition(void)
{
int32_t test_overflow = INT32_MAX;
int32_t ret;
ccprintf("Testing signed integer addition overflow\n");
cflush();
ret = test_overflow + 1;
/* Should never reach this. */
ccprintf("ret: %d\n", ret);
cflush();
return EC_ERROR_UNKNOWN;
}
/*
* trapping subtraction: __subvsi3.
*/
test_static int test_ftrapv_subtraction(void)
{
int32_t test_overflow = INT32_MIN;
int32_t ret;
ccprintf("Testing signed integer subtraction overflow\n");
cflush();
ret = test_overflow - 1;
/* Should never reach this. */
ccprintf("ret: %d\n", ret);
cflush();
return EC_ERROR_UNKNOWN;
}
/*
* trapping multiplication: __mulvsi3.
*/
test_static int test_ftrapv_multiplication(void)
{
int32_t test_overflow = INT32_MAX;
int32_t ret;
ccprintf("Testing signed integer multiplication overflow\n");
cflush();
ret = test_overflow * 2;
/* Should never reach this. */
ccprintf("ret: %d\n", ret);
cflush();
return EC_ERROR_UNKNOWN;
}
/*
* trapping negation: __negvsi2.
*/
test_static int test_ftrapv_negation(void)
{
int32_t test_overflow = INT32_MIN;
int32_t ret;
ccprintf("Testing signed integer negation overflow\n");
cflush();
ret = -test_overflow;
/* Should never reach this. */
ccprintf("ret: %d\n", ret);
cflush();
return EC_ERROR_UNKNOWN;
}
/*
* trapping absolute value: __absvsi2.
*
* TODO(b/258074414): Trapping on absolute value overflow is broken in clang.
*/
test_static int test_ftrapv_absolute_value(void)
{
int32_t test_overflow = INT32_MIN;
int32_t ret;
ccprintf("Testing signed integer absolute value overflow\n");
cflush();
ret = abs(test_overflow);
/* Should never reach this. */
ccprintf("ret: %d\n", ret);
cflush();
return EC_ERROR_UNKNOWN;
}
test_static int test_panic_data(void)
{
const uint32_t expected_reason = 0;
const uint32_t expected_info = 0;
/*
* https://developer.arm.com/documentation/dui0552/a/the-cortex-m3-processor/exception-model/exception-types
*/
const uint8_t expected_exception = 6; /* usage fault */
uint32_t reason = UINT32_MAX;
uint32_t info = UINT32_MAX;
uint8_t exception = UINT8_MAX;
panic_get_reason(&reason, &info, &exception);
TEST_EQ(reason, expected_reason, "%08x");
TEST_EQ(info, expected_info, "%d");
TEST_EQ(exception, expected_exception, "%d");
return EC_SUCCESS;
}
test_static void run_test_step1(void)
{
test_set_next_step(TEST_STATE_STEP_2);
RUN_TEST(test_ftrapv_addition);
}
test_static void run_test_step2(void)
{
RUN_TEST(test_panic_data);
if (test_get_error_count())
test_reboot_to_next_step(TEST_STATE_FAILED);
else
test_reboot_to_next_step(TEST_STATE_STEP_3);
}
test_static void run_test_step3(void)
{
test_set_next_step(TEST_STATE_STEP_4);
RUN_TEST(test_ftrapv_subtraction);
}
test_static void run_test_step4(void)
{
RUN_TEST(test_panic_data);
if (test_get_error_count())
test_reboot_to_next_step(TEST_STATE_FAILED);
else
test_reboot_to_next_step(TEST_STATE_STEP_5);
}
test_static void run_test_step5(void)
{
test_set_next_step(TEST_STATE_STEP_6);
RUN_TEST(test_ftrapv_multiplication);
}
test_static void run_test_step6(void)
{
RUN_TEST(test_panic_data);
if (test_get_error_count())
test_reboot_to_next_step(TEST_STATE_FAILED);
else
test_reboot_to_next_step(TEST_STATE_STEP_7);
}
test_static void run_test_step7(void)
{
test_set_next_step(TEST_STATE_STEP_8);
RUN_TEST(test_ftrapv_negation);
}
test_static void run_test_step8(void)
{
RUN_TEST(test_panic_data);
if (test_get_error_count())
test_reboot_to_next_step(TEST_STATE_FAILED);
else
test_reboot_to_next_step(TEST_STATE_STEP_9);
}
test_static void run_test_step9(void)
{
/*
* TODO(b/258074414): Trapping on absolute value overflow is broken in
* clang, so skip the check.
*/
#if 0
test_set_next_step(TEST_STATE_STEP_10);
RUN_TEST(test_ftrapv_absolute_value);
#else
test_reboot_to_next_step(TEST_STATE_STEP_10);
#endif
}
test_static void run_test_step10(void)
{
/*
* TODO(b/258074414): Trapping on absolute value overflow is broken in
* clang, so skip the check.
*/
#if 0
RUN_TEST(test_panic_data);
#endif
if (test_get_error_count())
test_reboot_to_next_step(TEST_STATE_FAILED);
else
test_reboot_to_next_step(TEST_STATE_PASSED);
}
void test_run_step(uint32_t state)
{
if (state & TEST_STATE_MASK(TEST_STATE_STEP_1)) {
run_test_step1();
} else if (state & TEST_STATE_MASK(TEST_STATE_STEP_2)) {
run_test_step2();
} else if (state & TEST_STATE_MASK(TEST_STATE_STEP_3)) {
run_test_step3();
} else if (state & TEST_STATE_MASK(TEST_STATE_STEP_4)) {
run_test_step4();
} else if (state & TEST_STATE_MASK(TEST_STATE_STEP_5)) {
run_test_step5();
} else if (state & TEST_STATE_MASK(TEST_STATE_STEP_6)) {
run_test_step6();
} else if (state & TEST_STATE_MASK(TEST_STATE_STEP_7)) {
run_test_step7();
} else if (state & TEST_STATE_MASK(TEST_STATE_STEP_8)) {
run_test_step8();
} else if (state & TEST_STATE_MASK(TEST_STATE_STEP_9)) {
run_test_step9();
} else if (state & TEST_STATE_MASK(TEST_STATE_STEP_10)) {
run_test_step10();
}
}
int task_test(void *unused)
{
if (IS_ENABLED(SECTION_IS_RW))
test_run_multistep();
return EC_SUCCESS;
}
void run_test(int argc, const char **argv)
{
test_reset();
msleep(30); /* Wait for TASK_ID_TEST to initialize */
task_wake(TASK_ID_TEST);
}
|
