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// Copyright 2018 The BoringSSL Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "cpu_arm_linux.h"
#include <string.h>
#include <gtest/gtest.h>
namespace {
TEST(ARMLinuxTest, CPUInfo) {
struct CPUInfoTest {
const char *cpuinfo;
unsigned long hwcap2;
} kTests[] = {
// Nexus 4 from https://crbug.com/341598#c43
{
"Processor : ARMv7 Processor rev 2 (v7l)\n"
"processor : 0\n"
"BogoMIPS : 13.53\n"
"\n"
"processor : 1\n"
"BogoMIPS : 13.53\n"
"\n"
"processor : 2\n"
"BogoMIPS : 13.53\n"
"\n"
"processor : 3\n"
"BogoMIPS : 13.53\n"
"\n"
"Features : swp half thumb fastmult vfp edsp neon vfpv3 tls "
"vfpv4 \n"
"CPU implementer : 0x51\n"
"CPU architecture: 7\n"
"CPU variant : 0x0\n"
"CPU part : 0x06f\n"
"CPU revision : 2\n"
"\n"
"Hardware : QCT APQ8064 MAKO\n"
"Revision : 000b\n"
"Serial : 0000000000000000\n",
0,
},
// Pixel 2 (truncated slightly)
{
"Processor : AArch64 Processor rev 1 (aarch64)\n"
"processor : 0\n"
"BogoMIPS : 38.00\n"
"Features : fp asimd evtstrm aes pmull sha1 sha2 crc32\n"
"CPU implementer : 0x51\n"
"CPU architecture: 8\n"
"CPU variant : 0xa\n"
"CPU part : 0x801\n"
"CPU revision : 4\n"
"\n"
"processor : 1\n"
"BogoMIPS : 38.00\n"
"Features : fp asimd evtstrm aes pmull sha1 sha2 crc32\n"
"CPU implementer : 0x51\n"
"CPU architecture: 8\n"
"CPU variant : 0xa\n"
"CPU part : 0x801\n"
"CPU revision : 4\n"
"\n"
"processor : 2\n"
"BogoMIPS : 38.00\n"
"Features : fp asimd evtstrm aes pmull sha1 sha2 crc32\n"
"CPU implementer : 0x51\n"
"CPU architecture: 8\n"
"CPU variant : 0xa\n"
"CPU part : 0x801\n"
"CPU revision : 4\n"
"\n"
"processor : 3\n"
"BogoMIPS : 38.00\n"
"Features : fp asimd evtstrm aes pmull sha1 sha2 crc32\n"
"CPU implementer : 0x51\n"
"CPU architecture: 8\n"
"CPU variant : 0xa\n"
"CPU part : 0x801\n"
"CPU revision : 4\n"
// (Extra processors omitted.)
"\n"
"Hardware : Qualcomm Technologies, Inc MSM8998\n",
HWCAP2_AES | HWCAP2_PMULL | HWCAP2_SHA1 | HWCAP2_SHA2,
},
// Garbage should be tolerated.
{
"Blah blah blah this is definitely an ARM CPU",
0,
},
// A hypothetical ARMv8 CPU without crc32 (and thus no trailing space
// after the last crypto entry).
{
"Features : aes pmull sha1 sha2\n"
"CPU architecture: 8\n",
HWCAP2_AES | HWCAP2_PMULL | HWCAP2_SHA1 | HWCAP2_SHA2,
},
// Various combinations of ARMv8 flags.
{
"Features : aes sha1 sha2\n"
"CPU architecture: 8\n",
HWCAP2_AES | HWCAP2_SHA1 | HWCAP2_SHA2,
},
{
"Features : pmull sha2\n"
"CPU architecture: 8\n",
HWCAP2_PMULL | HWCAP2_SHA2,
},
{
"Features : aes aes aes not_aes aes aes \n"
"CPU architecture: 8\n",
HWCAP2_AES,
},
{
"Features : \n"
"CPU architecture: 8\n",
0,
},
{
"Features : nothing\n"
"CPU architecture: 8\n",
0,
},
// If opening /proc/cpuinfo fails, we process the empty string.
{
"",
0,
},
};
for (const auto &t : kTests) {
SCOPED_TRACE(t.cpuinfo);
STRING_PIECE sp = {t.cpuinfo, strlen(t.cpuinfo)};
EXPECT_EQ(t.hwcap2, crypto_get_arm_hwcap2_from_cpuinfo(&sp));
}
}
} // namespace