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cpu_features/test/cpuinfo_aarch64_test.cc
Mykola Hohsadze a6bf4f9031
Add Windows Arm64 support (#291) 
* Add Windows Arm64 support

To add Windows Arm64 support was added detection of features via Windows API function IsProcessorFeaturePresent. Added _M_ARM64 to detect CPU_FEATURES_AARCH64 macro on Windows. Added initial code for Windows Arm64 testing and provided test for Raspberry PI 4. We can't use "define_introspection_and_hwcaps.inl" as a common file for all operating systems due to msvc compiler error C2099: initializer is not a constant, so as a workaround for Windows I used separate "define_introspection.inl"

See also: #268, #284, #186

* [CMake] Add  windows_utils.h to PROCESSOR_IS_AARCH64

* Add detection of armv8.1 atomic instructions

* Update note on win-arm64 implementation and move to cpuinfo_aarch64.h

* Remove redundant #ifdef CPU_FEATURES_OS_WINDOWS

* Add note on FP/SIMD and Cryptographic Extension for win-arm64

* Add comments to Aarch64Info fields

Added comments to specify that implementer, part and variant we set 0 for Windows, since Win API does not provide a way to get information. For revision added comment that we use GetNativeSystemInfo
2023-02-23 11:41:33 +01:00

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// Copyright 2017 Google LLC
//
// 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
//
// http://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 "cpuinfo_aarch64.h"
#include <set>
#include "filesystem_for_testing.h"
#include "gtest/gtest.h"
#include "hwcaps_for_testing.h"
#if defined(CPU_FEATURES_OS_WINDOWS)
#include "internal/windows_utils.h"
#endif // CPU_FEATURES_OS_WINDOWS
namespace cpu_features {
class FakeCpuAarch64 {
public:
#if defined(CPU_FEATURES_OS_WINDOWS)
bool GetWindowsIsProcessorFeaturePresent(DWORD dwProcessorFeature) {
return windows_isprocessorfeaturepresent_.count(dwProcessorFeature);
}
void SetWindowsIsProcessorFeaturePresent(DWORD dwProcessorFeature) {
windows_isprocessorfeaturepresent_.insert(dwProcessorFeature);
}
WORD GetWindowsNativeSystemInfoProcessorRevision() const {
return processor_revision_;
}
void SetWindowsNativeSystemInfoProcessorRevision(WORD wProcessorRevision) {
processor_revision_ = wProcessorRevision;
}
private:
std::set<DWORD> windows_isprocessorfeaturepresent_;
WORD processor_revision_{};
#endif // CPU_FEATURES_OS_WINDOWS
};
static FakeCpuAarch64* g_fake_cpu_instance = nullptr;
static FakeCpuAarch64& cpu() {
assert(g_fake_cpu_instance != nullptr);
return *g_fake_cpu_instance;
}
#if defined(CPU_FEATURES_OS_WINDOWS)
extern "C" bool GetWindowsIsProcessorFeaturePresent(DWORD dwProcessorFeature) {
return cpu().GetWindowsIsProcessorFeaturePresent(dwProcessorFeature);
}
extern "C" WORD GetWindowsNativeSystemInfoProcessorRevision() {
return cpu().GetWindowsNativeSystemInfoProcessorRevision();
}
#endif // CPU_FEATURES_OS_WINDOWS
namespace {
class CpuidAarch64Test : public ::testing::Test {
protected:
void SetUp() override {
assert(g_fake_cpu_instance == nullptr);
g_fake_cpu_instance = new FakeCpuAarch64();
}
void TearDown() override {
delete g_fake_cpu_instance;
g_fake_cpu_instance = nullptr;
}
};
TEST(CpuinfoAarch64Test, Aarch64FeaturesEnum) {
const char* last_name = GetAarch64FeaturesEnumName(AARCH64_LAST_);
EXPECT_STREQ(last_name, "unknown_feature");
for (int i = static_cast<int>(AARCH64_FP);
i != static_cast<int>(AARCH64_LAST_); ++i) {
const auto feature = static_cast<Aarch64FeaturesEnum>(i);
const char* name = GetAarch64FeaturesEnumName(feature);
ASSERT_FALSE(name == nullptr);
EXPECT_STRNE(name, "");
EXPECT_STRNE(name, last_name);
}
}
#if defined(CPU_FEATURES_OS_LINUX)
void DisableHardwareCapabilities() { SetHardwareCapabilities(0, 0); }
TEST(CpuinfoAarch64Test, FromHardwareCap) {
ResetHwcaps();
SetHardwareCapabilities(AARCH64_HWCAP_FP | AARCH64_HWCAP_AES, 0);
GetEmptyFilesystem(); // disabling /proc/cpuinfo
const auto info = GetAarch64Info();
EXPECT_TRUE(info.features.fp);
EXPECT_FALSE(info.features.asimd);
EXPECT_FALSE(info.features.evtstrm);
EXPECT_TRUE(info.features.aes);
EXPECT_FALSE(info.features.pmull);
EXPECT_FALSE(info.features.sha1);
EXPECT_FALSE(info.features.sha2);
EXPECT_FALSE(info.features.crc32);
EXPECT_FALSE(info.features.atomics);
EXPECT_FALSE(info.features.fphp);
EXPECT_FALSE(info.features.asimdhp);
EXPECT_FALSE(info.features.cpuid);
EXPECT_FALSE(info.features.asimdrdm);
EXPECT_FALSE(info.features.jscvt);
EXPECT_FALSE(info.features.fcma);
EXPECT_FALSE(info.features.lrcpc);
EXPECT_FALSE(info.features.dcpop);
EXPECT_FALSE(info.features.sha3);
EXPECT_FALSE(info.features.sm3);
EXPECT_FALSE(info.features.sm4);
EXPECT_FALSE(info.features.asimddp);
EXPECT_FALSE(info.features.sha512);
EXPECT_FALSE(info.features.sve);
EXPECT_FALSE(info.features.asimdfhm);
EXPECT_FALSE(info.features.dit);
EXPECT_FALSE(info.features.uscat);
EXPECT_FALSE(info.features.ilrcpc);
EXPECT_FALSE(info.features.flagm);
EXPECT_FALSE(info.features.ssbs);
EXPECT_FALSE(info.features.sb);
EXPECT_FALSE(info.features.paca);
EXPECT_FALSE(info.features.pacg);
}
TEST(CpuinfoAarch64Test, FromHardwareCap2) {
ResetHwcaps();
SetHardwareCapabilities(AARCH64_HWCAP_FP,
AARCH64_HWCAP2_SVE2 | AARCH64_HWCAP2_BTI);
GetEmptyFilesystem(); // disabling /proc/cpuinfo
const auto info = GetAarch64Info();
EXPECT_TRUE(info.features.fp);
EXPECT_TRUE(info.features.sve2);
EXPECT_TRUE(info.features.bti);
EXPECT_FALSE(info.features.dcpodp);
EXPECT_FALSE(info.features.sveaes);
EXPECT_FALSE(info.features.svepmull);
EXPECT_FALSE(info.features.svebitperm);
EXPECT_FALSE(info.features.svesha3);
EXPECT_FALSE(info.features.svesm4);
EXPECT_FALSE(info.features.flagm2);
EXPECT_FALSE(info.features.frint);
EXPECT_FALSE(info.features.svei8mm);
EXPECT_FALSE(info.features.svef32mm);
EXPECT_FALSE(info.features.svef64mm);
EXPECT_FALSE(info.features.svebf16);
EXPECT_FALSE(info.features.i8mm);
EXPECT_FALSE(info.features.bf16);
EXPECT_FALSE(info.features.dgh);
EXPECT_FALSE(info.features.rng);
}
TEST(CpuinfoAarch64Test, ARMCortexA53) {
ResetHwcaps();
auto& fs = GetEmptyFilesystem();
fs.CreateFile("/proc/cpuinfo",
R"(Processor : AArch64 Processor rev 3 (aarch64)
processor : 0
processor : 1
processor : 2
processor : 3
processor : 4
processor : 5
processor : 6
processor : 7
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32
CPU implementer : 0x41
CPU architecture: AArch64
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 3)");
const auto info = GetAarch64Info();
EXPECT_EQ(info.implementer, 0x41);
EXPECT_EQ(info.variant, 0x0);
EXPECT_EQ(info.part, 0xd03);
EXPECT_EQ(info.revision, 3);
EXPECT_TRUE(info.features.fp);
EXPECT_TRUE(info.features.asimd);
EXPECT_TRUE(info.features.evtstrm);
EXPECT_TRUE(info.features.aes);
EXPECT_TRUE(info.features.pmull);
EXPECT_TRUE(info.features.sha1);
EXPECT_TRUE(info.features.sha2);
EXPECT_TRUE(info.features.crc32);
EXPECT_FALSE(info.features.atomics);
EXPECT_FALSE(info.features.fphp);
EXPECT_FALSE(info.features.asimdhp);
EXPECT_FALSE(info.features.cpuid);
EXPECT_FALSE(info.features.asimdrdm);
EXPECT_FALSE(info.features.jscvt);
EXPECT_FALSE(info.features.fcma);
EXPECT_FALSE(info.features.lrcpc);
EXPECT_FALSE(info.features.dcpop);
EXPECT_FALSE(info.features.sha3);
EXPECT_FALSE(info.features.sm3);
EXPECT_FALSE(info.features.sm4);
EXPECT_FALSE(info.features.asimddp);
EXPECT_FALSE(info.features.sha512);
EXPECT_FALSE(info.features.sve);
EXPECT_FALSE(info.features.asimdfhm);
EXPECT_FALSE(info.features.dit);
EXPECT_FALSE(info.features.uscat);
EXPECT_FALSE(info.features.ilrcpc);
EXPECT_FALSE(info.features.flagm);
EXPECT_FALSE(info.features.ssbs);
EXPECT_FALSE(info.features.sb);
EXPECT_FALSE(info.features.paca);
EXPECT_FALSE(info.features.pacg);
EXPECT_FALSE(info.features.dcpodp);
EXPECT_FALSE(info.features.sve2);
EXPECT_FALSE(info.features.sveaes);
EXPECT_FALSE(info.features.svepmull);
EXPECT_FALSE(info.features.svebitperm);
EXPECT_FALSE(info.features.svesha3);
EXPECT_FALSE(info.features.svesm4);
EXPECT_FALSE(info.features.flagm2);
EXPECT_FALSE(info.features.frint);
EXPECT_FALSE(info.features.svei8mm);
EXPECT_FALSE(info.features.svef32mm);
EXPECT_FALSE(info.features.svef64mm);
EXPECT_FALSE(info.features.svebf16);
EXPECT_FALSE(info.features.i8mm);
EXPECT_FALSE(info.features.bf16);
EXPECT_FALSE(info.features.dgh);
EXPECT_FALSE(info.features.rng);
EXPECT_FALSE(info.features.bti);
EXPECT_FALSE(info.features.mte);
EXPECT_FALSE(info.features.ecv);
EXPECT_FALSE(info.features.afp);
EXPECT_FALSE(info.features.rpres);
}
#endif // CPU_FEATURES_OS_LINUX
#if defined(CPU_FEATURES_OS_WINDOWS)
TEST_F(CpuidAarch64Test, WINDOWS_AARCH64_RPI4) {
cpu().SetWindowsNativeSystemInfoProcessorRevision(0x03);
cpu().SetWindowsIsProcessorFeaturePresent(PF_ARM_VFP_32_REGISTERS_AVAILABLE);
cpu().SetWindowsIsProcessorFeaturePresent(PF_ARM_NEON_INSTRUCTIONS_AVAILABLE);
cpu().SetWindowsIsProcessorFeaturePresent(
PF_ARM_V8_CRC32_INSTRUCTIONS_AVAILABLE);
const auto info = GetAarch64Info();
EXPECT_EQ(info.revision, 0x03);
EXPECT_TRUE(info.features.fp);
EXPECT_TRUE(info.features.asimd);
EXPECT_TRUE(info.features.crc32);
EXPECT_FALSE(info.features.aes);
EXPECT_FALSE(info.features.sha1);
EXPECT_FALSE(info.features.sha2);
EXPECT_FALSE(info.features.pmull);
EXPECT_FALSE(info.features.atomics);
EXPECT_FALSE(info.features.asimddp);
EXPECT_FALSE(info.features.jscvt);
EXPECT_FALSE(info.features.lrcpc);
}
#endif // CPU_FEATURES_OS_WINDOWS
} // namespace
} // namespace cpu_features
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