cpu-arm-linux_test.cc
Go to the documentation of this file.
1 /* Copyright (c) 2018, Google Inc.
2  *
3  * Permission to use, copy, modify, and/or distribute this software for any
4  * purpose with or without fee is hereby granted, provided that the above
5  * copyright notice and this permission notice appear in all copies.
6  *
7  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
8  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
9  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
10  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
11  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
12  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
13  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
14 
15 #include "cpu-arm-linux.h"
16 
17 #include <string.h>
18 
19 #include <gtest/gtest.h>
20 
21 
22 TEST(ARMLinuxTest, CPUInfo) {
23  struct CPUInfoTest {
24  const char *cpuinfo;
25  unsigned long hwcap;
26  unsigned long hwcap2;
27  bool broken_neon;
28  } kTests[] = {
29  // https://crbug.com/341598#c33
30  {
31  "Processor: ARMv7 Processory rev 0 (v71)\n"
32  "processor: 0\n"
33  "BogoMIPS: 13.50\n"
34  "\n"
35  "Processor: 1\n"
36  "BogoMIPS: 13.50\n"
37  "\n"
38  "Features: swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 "
39  "idiva idivt\n"
40  "CPU implementer : 0x51\n"
41  "CPU architecture: 7\n"
42  "CPU variant: 0x1\n"
43  "CPU part: 0x04d\n"
44  "CPU revision: 0\n"
45  "\n"
46  "Hardware: SAMSUNG M2\n"
47  "Revision: 0010\n"
48  "Serial: 00001e030000354e\n",
49  HWCAP_NEON,
50  0,
51  true,
52  },
53  // https://crbug.com/341598#c39
54  {
55  "Processor : ARMv7 Processor rev 0 (v7l)\n"
56  "processor : 0\n"
57  "BogoMIPS : 13.53\n"
58  "\n"
59  "Features : swp half thumb fastmult vfp edsp neon vfpv3 tls "
60  "vfpv4\n"
61  "CPU implementer : 0x51\n"
62  "CPU architecture: 7\n"
63  "CPU variant : 0x1\n"
64  "CPU part : 0x04d\n"
65  "CPU revision : 0\n"
66  "\n"
67  "Hardware : SAMSUNG M2_ATT\n"
68  "Revision : 0010\n"
69  "Serial : 0000df0c00004d4c\n",
70  HWCAP_NEON,
71  0,
72  true,
73  },
74  // Nexus 4 from https://crbug.com/341598#c43
75  {
76  "Processor : ARMv7 Processor rev 2 (v7l)\n"
77  "processor : 0\n"
78  "BogoMIPS : 13.53\n"
79  "\n"
80  "processor : 1\n"
81  "BogoMIPS : 13.53\n"
82  "\n"
83  "processor : 2\n"
84  "BogoMIPS : 13.53\n"
85  "\n"
86  "processor : 3\n"
87  "BogoMIPS : 13.53\n"
88  "\n"
89  "Features : swp half thumb fastmult vfp edsp neon vfpv3 tls "
90  "vfpv4 \n"
91  "CPU implementer : 0x51\n"
92  "CPU architecture: 7\n"
93  "CPU variant : 0x0\n"
94  "CPU part : 0x06f\n"
95  "CPU revision : 2\n"
96  "\n"
97  "Hardware : QCT APQ8064 MAKO\n"
98  "Revision : 000b\n"
99  "Serial : 0000000000000000\n",
100  HWCAP_NEON,
101  0,
102  false,
103  },
104  // Razr M from https://crbug.com/341598#c43
105  {
106  "Processor : ARMv7 Processor rev 4 (v7l)\n"
107  "processor : 0\n"
108  "BogoMIPS : 13.53\n"
109  "\n"
110  "Features : swp half thumb fastmult vfp edsp neon vfpv3 tls "
111  "vfpv4\n"
112  "CPU implementer : 0x51\n"
113  "CPU architecture: 7\n"
114  "CPU variant : 0x1\n"
115  "CPU part : 0x04d\n"
116  "CPU revision : 4\n"
117  "\n"
118  "Hardware : msm8960dt\n"
119  "Revision : 82a0\n"
120  "Serial : 0001000201fe37a5\n",
121  HWCAP_NEON,
122  0,
123  false,
124  },
125  // Pixel 2 (truncated slightly)
126  {
127  "Processor : AArch64 Processor rev 1 (aarch64)\n"
128  "processor : 0\n"
129  "BogoMIPS : 38.00\n"
130  "Features : fp asimd evtstrm aes pmull sha1 sha2 crc32\n"
131  "CPU implementer : 0x51\n"
132  "CPU architecture: 8\n"
133  "CPU variant : 0xa\n"
134  "CPU part : 0x801\n"
135  "CPU revision : 4\n"
136  "\n"
137  "processor : 1\n"
138  "BogoMIPS : 38.00\n"
139  "Features : fp asimd evtstrm aes pmull sha1 sha2 crc32\n"
140  "CPU implementer : 0x51\n"
141  "CPU architecture: 8\n"
142  "CPU variant : 0xa\n"
143  "CPU part : 0x801\n"
144  "CPU revision : 4\n"
145  "\n"
146  "processor : 2\n"
147  "BogoMIPS : 38.00\n"
148  "Features : fp asimd evtstrm aes pmull sha1 sha2 crc32\n"
149  "CPU implementer : 0x51\n"
150  "CPU architecture: 8\n"
151  "CPU variant : 0xa\n"
152  "CPU part : 0x801\n"
153  "CPU revision : 4\n"
154  "\n"
155  "processor : 3\n"
156  "BogoMIPS : 38.00\n"
157  "Features : fp asimd evtstrm aes pmull sha1 sha2 crc32\n"
158  "CPU implementer : 0x51\n"
159  "CPU architecture: 8\n"
160  "CPU variant : 0xa\n"
161  "CPU part : 0x801\n"
162  "CPU revision : 4\n"
163  // (Extra processors omitted.)
164  "\n"
165  "Hardware : Qualcomm Technologies, Inc MSM8998\n",
166  HWCAP_NEON, // CPU architecture 8 implies NEON.
167  HWCAP2_AES | HWCAP2_PMULL | HWCAP2_SHA1 | HWCAP2_SHA2,
168  false,
169  },
170  // Nexus 4 from
171  // Garbage should be tolerated.
172  {
173  "Blah blah blah this is definitely an ARM CPU",
174  0,
175  0,
176  false,
177  },
178  // A hypothetical ARMv8 CPU without crc32 (and thus no trailing space
179  // after the last crypto entry).
180  {
181  "Features : aes pmull sha1 sha2\n"
182  "CPU architecture: 8\n",
183  HWCAP_NEON,
184  HWCAP2_AES | HWCAP2_PMULL | HWCAP2_SHA1 | HWCAP2_SHA2,
185  false,
186  },
187  // Various combinations of ARMv8 flags.
188  {
189  "Features : aes sha1 sha2\n"
190  "CPU architecture: 8\n",
191  HWCAP_NEON,
192  HWCAP2_AES | HWCAP2_SHA1 | HWCAP2_SHA2,
193  false,
194  },
195  {
196  "Features : pmull sha2\n"
197  "CPU architecture: 8\n",
198  HWCAP_NEON,
199  HWCAP2_PMULL | HWCAP2_SHA2,
200  false,
201  },
202  {
203  "Features : aes aes aes not_aes aes aes \n"
204  "CPU architecture: 8\n",
205  HWCAP_NEON,
206  HWCAP2_AES,
207  false,
208  },
209  {
210  "Features : \n"
211  "CPU architecture: 8\n",
212  HWCAP_NEON,
213  0,
214  false,
215  },
216  {
217  "Features : nothing\n"
218  "CPU architecture: 8\n",
219  HWCAP_NEON,
220  0,
221  false,
222  },
223  // If opening /proc/cpuinfo fails, we process the empty string.
224  {
225  "",
226  0,
227  0,
228  false,
229  },
230  };
231 
232  for (const auto &t : kTests) {
233  SCOPED_TRACE(t.cpuinfo);
234  STRING_PIECE sp = {t.cpuinfo, strlen(t.cpuinfo)};
235  EXPECT_EQ(t.hwcap, crypto_get_arm_hwcap_from_cpuinfo(&sp));
236  EXPECT_EQ(t.hwcap2, crypto_get_arm_hwcap2_from_cpuinfo(&sp));
237  EXPECT_EQ(t.broken_neon ? 1 : 0, crypto_cpuinfo_has_broken_neon(&sp));
238  }
239 }
HWCAP2_SHA1
#define HWCAP2_SHA1
Definition: cpu-arm-linux.h:38
HWCAP2_AES
#define HWCAP2_AES
Definition: cpu-arm-linux.h:36
crypto_cpuinfo_has_broken_neon
static int crypto_cpuinfo_has_broken_neon(const STRING_PIECE *cpuinfo)
Definition: cpu-arm-linux.h:188
string.h
crypto_get_arm_hwcap_from_cpuinfo
static unsigned long crypto_get_arm_hwcap_from_cpuinfo(const STRING_PIECE *cpuinfo)
Definition: cpu-arm-linux.h:142
kTests
static const HKDFTestVector kTests[]
Definition: hkdf_test.cc:41
HWCAP2_PMULL
#define HWCAP2_PMULL
Definition: cpu-arm-linux.h:37
HWCAP_NEON
#define HWCAP_NEON
Definition: cpu-arm-linux.h:32
STRING_PIECE
Definition: cpu-arm-linux.h:41
EXPECT_EQ
#define EXPECT_EQ(a, b)
Definition: iomgr/time_averaged_stats_test.cc:27
SCOPED_TRACE
#define SCOPED_TRACE(message)
Definition: bloaty/third_party/googletest/googletest/include/gtest/gtest.h:2264
crypto_get_arm_hwcap2_from_cpuinfo
static unsigned long crypto_get_arm_hwcap2_from_cpuinfo(const STRING_PIECE *cpuinfo)
Definition: cpu-arm-linux.h:163
cpu-arm-linux.h
HWCAP2_SHA2
#define HWCAP2_SHA2
Definition: cpu-arm-linux.h:39
TEST
TEST(ARMLinuxTest, CPUInfo)
Definition: cpu-arm-linux_test.cc:22

grpc
Author(s):
autogenerated on Thu Mar 13 2025 02:58:59