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355 lines
11 KiB
355 lines
11 KiB
// Copyright 2017 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "cpuinfo_arm.h"
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#include "filesystem_for_testing.h"
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#include "gtest/gtest.h"
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#include "hwcaps_for_testing.h"
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namespace cpu_features {
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namespace {
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void DisableHardwareCapabilities() { SetHardwareCapabilities(0, 0); }
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TEST(CpuinfoArmTest, FromHardwareCap) {
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SetHardwareCapabilities(ARM_HWCAP_NEON, ARM_HWCAP2_AES | ARM_HWCAP2_CRC32);
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GetEmptyFilesystem(); // disabling /proc/cpuinfo
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const auto info = GetArmInfo();
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EXPECT_TRUE(info.features.vfp); // triggered by vfpv3
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EXPECT_TRUE(info.features.vfpv3); // triggered by neon
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EXPECT_TRUE(info.features.neon);
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EXPECT_TRUE(info.features.aes);
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EXPECT_TRUE(info.features.crc32);
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EXPECT_FALSE(info.features.vfpv4);
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EXPECT_FALSE(info.features.iwmmxt);
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EXPECT_FALSE(info.features.crunch);
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EXPECT_FALSE(info.features.thumbee);
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EXPECT_FALSE(info.features.vfpv3d16);
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EXPECT_FALSE(info.features.idiva);
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EXPECT_FALSE(info.features.idivt);
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EXPECT_FALSE(info.features.pmull);
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EXPECT_FALSE(info.features.sha1);
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EXPECT_FALSE(info.features.sha2);
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// check some random features with EnumValue():
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EXPECT_TRUE(GetArmFeaturesEnumValue(&info.features, ARM_VFP));
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EXPECT_FALSE(GetArmFeaturesEnumValue(&info.features, ARM_VFPV4));
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// out of bound EnumValue() check
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EXPECT_FALSE(GetArmFeaturesEnumValue(&info.features, (ArmFeaturesEnum)~0x0));
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}
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TEST(CpuinfoArmTest, ODroidFromCpuInfo) {
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DisableHardwareCapabilities();
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auto& fs = GetEmptyFilesystem();
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fs.CreateFile("/proc/cpuinfo", R"(processor : 0
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model name : ARMv7 Processor rev 3 (v71)
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BogoMIPS : 120.00
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Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae
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CPU implementer : 0x41
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CPU architecture: 7
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CPU variant : 0x2
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CPU part : 0xc0f
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CPU revision : 3)");
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const auto info = GetArmInfo();
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EXPECT_EQ(info.implementer, 0x41);
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EXPECT_EQ(info.variant, 0x2);
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EXPECT_EQ(info.part, 0xc0f);
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EXPECT_EQ(info.revision, 3);
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EXPECT_EQ(info.architecture, 7);
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EXPECT_FALSE(info.features.swp);
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EXPECT_TRUE(info.features.half);
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EXPECT_TRUE(info.features.thumb);
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EXPECT_FALSE(info.features._26bit);
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EXPECT_TRUE(info.features.fastmult);
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EXPECT_FALSE(info.features.fpa);
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EXPECT_TRUE(info.features.vfp);
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EXPECT_TRUE(info.features.edsp);
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EXPECT_FALSE(info.features.java);
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EXPECT_FALSE(info.features.iwmmxt);
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EXPECT_FALSE(info.features.crunch);
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EXPECT_FALSE(info.features.thumbee);
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EXPECT_TRUE(info.features.neon);
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EXPECT_TRUE(info.features.vfpv3);
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EXPECT_FALSE(info.features.vfpv3d16);
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EXPECT_TRUE(info.features.tls);
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EXPECT_TRUE(info.features.vfpv4);
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EXPECT_TRUE(info.features.idiva);
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EXPECT_TRUE(info.features.idivt);
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EXPECT_TRUE(info.features.vfpd32);
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EXPECT_TRUE(info.features.lpae);
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EXPECT_FALSE(info.features.evtstrm);
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EXPECT_FALSE(info.features.aes);
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EXPECT_FALSE(info.features.pmull);
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EXPECT_FALSE(info.features.sha1);
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EXPECT_FALSE(info.features.sha2);
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EXPECT_FALSE(info.features.crc32);
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}
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// Linux test-case
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TEST(CpuinfoArmTest, RaspberryPiZeroFromCpuInfo) {
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DisableHardwareCapabilities();
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auto& fs = GetEmptyFilesystem();
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fs.CreateFile("/proc/cpuinfo", R"(processor : 0
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model name : ARMv6-compatible processor rev 7 (v6l)
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BogoMIPS : 697.95
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Features : half thumb fastmult vfp edsp java tls
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CPU implementer : 0x41
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CPU architecture: 7
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CPU variant : 0x0
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CPU part : 0xb76
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CPU revision : 7
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Hardware : BCM2835
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Revision : 9000c1
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Serial : 000000006cd946f3)");
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const auto info = GetArmInfo();
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EXPECT_EQ(info.implementer, 0x41);
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EXPECT_EQ(info.variant, 0x0);
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EXPECT_EQ(info.part, 0xb76);
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EXPECT_EQ(info.revision, 7);
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EXPECT_EQ(info.architecture, 6);
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EXPECT_FALSE(info.features.swp);
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EXPECT_TRUE(info.features.half);
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EXPECT_TRUE(info.features.thumb);
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EXPECT_FALSE(info.features._26bit);
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EXPECT_TRUE(info.features.fastmult);
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EXPECT_FALSE(info.features.fpa);
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EXPECT_TRUE(info.features.vfp);
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EXPECT_TRUE(info.features.edsp);
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EXPECT_TRUE(info.features.java);
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EXPECT_FALSE(info.features.iwmmxt);
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EXPECT_FALSE(info.features.crunch);
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EXPECT_FALSE(info.features.thumbee);
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EXPECT_FALSE(info.features.neon);
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EXPECT_FALSE(info.features.vfpv3);
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EXPECT_FALSE(info.features.vfpv3d16);
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EXPECT_TRUE(info.features.tls);
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EXPECT_FALSE(info.features.vfpv4);
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EXPECT_FALSE(info.features.idiva);
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EXPECT_FALSE(info.features.idivt);
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EXPECT_FALSE(info.features.vfpd32);
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EXPECT_FALSE(info.features.lpae);
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EXPECT_FALSE(info.features.evtstrm);
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EXPECT_FALSE(info.features.aes);
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EXPECT_FALSE(info.features.pmull);
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EXPECT_FALSE(info.features.sha1);
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EXPECT_FALSE(info.features.sha2);
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EXPECT_FALSE(info.features.crc32);
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}
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TEST(CpuinfoArmTest, MarvellArmadaFromCpuInfo) {
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DisableHardwareCapabilities();
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auto& fs = GetEmptyFilesystem();
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fs.CreateFile("/proc/cpuinfo", R"(processor : 0
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model name : ARMv7 Processor rev 1 (v7l)
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BogoMIPS : 50.00
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Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpd32
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CPU implementer : 0x41
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CPU architecture: 7
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CPU variant : 0x4
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CPU part : 0xc09
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CPU revision : 1
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processor : 1
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model name : ARMv7 Processor rev 1 (v7l)
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BogoMIPS : 50.00
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Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpd32
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CPU implementer : 0x41
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CPU architecture: 7
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CPU variant : 0x4
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CPU part : 0xc09
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CPU revision : 1
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Hardware : Marvell Armada 380/385 (Device Tree)
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Revision : 0000
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Serial : 0000000000000000)");
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const auto info = GetArmInfo();
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EXPECT_EQ(info.implementer, 0x41);
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EXPECT_EQ(info.variant, 0x4);
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EXPECT_EQ(info.part, 0xc09);
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EXPECT_EQ(info.revision, 1);
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EXPECT_EQ(info.architecture, 7);
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EXPECT_FALSE(info.features.swp);
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EXPECT_TRUE(info.features.half);
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EXPECT_TRUE(info.features.thumb);
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EXPECT_FALSE(info.features._26bit);
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EXPECT_TRUE(info.features.fastmult);
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EXPECT_FALSE(info.features.fpa);
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EXPECT_TRUE(info.features.vfp);
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EXPECT_TRUE(info.features.edsp);
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EXPECT_FALSE(info.features.java);
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EXPECT_FALSE(info.features.iwmmxt);
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EXPECT_FALSE(info.features.crunch);
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EXPECT_FALSE(info.features.thumbee);
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EXPECT_TRUE(info.features.neon);
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EXPECT_TRUE(info.features.vfpv3);
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EXPECT_FALSE(info.features.vfpv3d16);
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EXPECT_TRUE(info.features.tls);
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EXPECT_FALSE(info.features.vfpv4);
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EXPECT_FALSE(info.features.idiva);
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EXPECT_FALSE(info.features.idivt);
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EXPECT_TRUE(info.features.vfpd32);
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EXPECT_FALSE(info.features.lpae);
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EXPECT_FALSE(info.features.evtstrm);
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EXPECT_FALSE(info.features.aes);
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EXPECT_FALSE(info.features.pmull);
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EXPECT_FALSE(info.features.sha1);
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EXPECT_FALSE(info.features.sha2);
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EXPECT_FALSE(info.features.crc32);
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}
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// Android test-case
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// http://code.google.com/p/android/issues/detail?id=10812
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TEST(CpuinfoArmTest, InvalidArmv7) {
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DisableHardwareCapabilities();
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auto& fs = GetEmptyFilesystem();
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fs.CreateFile("/proc/cpuinfo",
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R"(Processor : ARMv6-compatible processor rev 6 (v6l)
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BogoMIPS : 199.47
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Features : swp half thumb fastmult vfp edsp java
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CPU implementer : 0x41
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CPU architecture: 7
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CPU variant : 0x0
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CPU part : 0xb76
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CPU revision : 6
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Hardware : SPICA
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Revision : 0020
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Serial : 33323613546d00ec )");
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const auto info = GetArmInfo();
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EXPECT_EQ(info.architecture, 6);
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EXPECT_TRUE(info.features.swp);
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EXPECT_TRUE(info.features.half);
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EXPECT_TRUE(info.features.thumb);
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EXPECT_FALSE(info.features._26bit);
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EXPECT_TRUE(info.features.fastmult);
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EXPECT_FALSE(info.features.fpa);
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EXPECT_TRUE(info.features.vfp);
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EXPECT_TRUE(info.features.edsp);
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EXPECT_TRUE(info.features.java);
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EXPECT_FALSE(info.features.iwmmxt);
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EXPECT_FALSE(info.features.crunch);
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EXPECT_FALSE(info.features.thumbee);
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EXPECT_FALSE(info.features.neon);
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EXPECT_FALSE(info.features.vfpv3);
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EXPECT_FALSE(info.features.vfpv3d16);
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EXPECT_FALSE(info.features.tls);
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EXPECT_FALSE(info.features.vfpv4);
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EXPECT_FALSE(info.features.idiva);
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EXPECT_FALSE(info.features.idivt);
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EXPECT_FALSE(info.features.vfpd32);
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EXPECT_FALSE(info.features.lpae);
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EXPECT_FALSE(info.features.evtstrm);
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EXPECT_FALSE(info.features.aes);
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EXPECT_FALSE(info.features.pmull);
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EXPECT_FALSE(info.features.sha1);
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EXPECT_FALSE(info.features.sha2);
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EXPECT_FALSE(info.features.crc32);
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}
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// Android test-case
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// https://crbug.com/341598.
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TEST(CpuinfoArmTest, InvalidNeon) {
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auto& fs = GetEmptyFilesystem();
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fs.CreateFile("/proc/cpuinfo",
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R"(Processor: ARMv7 Processory rev 0 (v71)
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processor: 0
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BogoMIPS: 13.50
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Processor: 1
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BogoMIPS: 13.50
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Features: swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt
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CPU implementer : 0x51
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CPU architecture: 7
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CPU variant: 0x1
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CPU part: 0x04d
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CPU revision: 0
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Hardware: SAMSUNG M2
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Revision: 0010
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Serial: 00001e030000354e)");
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const auto info = GetArmInfo();
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EXPECT_TRUE(info.features.swp);
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EXPECT_FALSE(info.features.neon);
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}
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// The Nexus 4 (Qualcomm Krait) kernel configuration forgets to report IDIV
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// support.
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TEST(CpuinfoArmTest, Nexus4_0x510006f2) {
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DisableHardwareCapabilities();
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auto& fs = GetEmptyFilesystem();
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fs.CreateFile("/proc/cpuinfo",
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R"(CPU implementer : 0x51
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CPU architecture: 7
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CPU variant : 0x0
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CPU part : 0x6f
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CPU revision : 2)");
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const auto info = GetArmInfo();
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EXPECT_TRUE(info.features.idiva);
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EXPECT_TRUE(info.features.idivt);
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EXPECT_EQ(GetArmCpuId(&info), 0x510006f2);
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}
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// The Nexus 4 (Qualcomm Krait) kernel configuration forgets to report IDIV
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// support.
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TEST(CpuinfoArmTest, Nexus4_0x510006f3) {
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DisableHardwareCapabilities();
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auto& fs = GetEmptyFilesystem();
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fs.CreateFile("/proc/cpuinfo",
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R"(CPU implementer : 0x51
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CPU architecture: 7
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CPU variant : 0x0
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CPU part : 0x6f
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CPU revision : 3)");
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const auto info = GetArmInfo();
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EXPECT_TRUE(info.features.idiva);
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EXPECT_TRUE(info.features.idivt);
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EXPECT_EQ(GetArmCpuId(&info), 0x510006f3);
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}
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// The emulator-specific Android 4.2 kernel fails to report support for the
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// 32-bit ARM IDIV instruction. Technically, this is a feature of the virtual
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// CPU implemented by the emulator.
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TEST(CpuinfoArmTest, EmulatorSpecificIdiv) {
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DisableHardwareCapabilities();
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auto& fs = GetEmptyFilesystem();
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fs.CreateFile("/proc/cpuinfo",
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R"(Processor : ARMv7 Processor rev 0 (v7l)
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BogoMIPS : 629.14
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Features : swp half thumb fastmult vfp edsp neon vfpv3
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CPU implementer : 0x41
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CPU architecture: 7
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CPU variant : 0x0
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CPU part : 0xc08
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CPU revision : 0
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Hardware : Goldfish
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Revision : 0000
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Serial : 0000000000000000)");
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const auto info = GetArmInfo();
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EXPECT_TRUE(info.features.idiva);
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}
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} // namespace
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} // namespace cpu_features
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