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cpu_features/test/cpuinfo_aarch64_test.cc
Peter Tarjan 822b9a6cea Update AArch64 features to Linux 6.12. 
Change-Id: Ie4e3f6a1e308e81e89f45976e5cba3c0d9bc3039
2025-09-23 15:55:34 +02:00

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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
#if defined(CPU_FEATURES_OS_FREEBSD) || defined(CPU_FEATURES_OS_OPENBSD) || defined(CPU_FEATURES_OS_LINUX)
#include "internal/cpuid_aarch64.h"
#endif // defined(CPU_FEATURES_OS_FREEBSD) || defined(CPU_FEATURES_OS_OPENBSD) || defined(CPU_FEATURES_OS_LINUX)
namespace cpu_features {
class FakeCpuAarch64 {
#if defined(CPU_FEATURES_OS_FREEBSD) || defined(CPU_FEATURES_OS_OPENBSD) || defined(CPU_FEATURES_OS_LINUX)
public:
uint64_t GetMidrEl1() const { return _midr_el1; }
void SetMidrEl1(uint64_t midr_el1) { _midr_el1 = midr_el1; }
private:
uint64_t _midr_el1;
#elif defined(CPU_FEATURES_OS_MACOS)
std::set<std::string> darwin_sysctlbyname_;
std::map<std::string, int> darwin_sysctlbynamevalue_;
public:
bool GetDarwinSysCtlByName(std::string name) const {
return darwin_sysctlbyname_.count(name);
}
int GetDarwinSysCtlByNameValue(std::string name) const {
const auto iter = darwin_sysctlbynamevalue_.find(name);
if (iter != darwin_sysctlbynamevalue_.end()) return iter->second;
return 0;
}
void SetDarwinSysCtlByName(std::string name) {
darwin_sysctlbyname_.insert(name);
}
void SetDarwinSysCtlByNameValue(std::string name, int value) {
darwin_sysctlbynamevalue_[name] = value;
}
#elif defined(CPU_FEATURES_OS_WINDOWS)
std::set<DWORD> windows_isprocessorfeaturepresent_;
WORD processor_revision_{};
public:
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;
}
#endif
};
static FakeCpuAarch64* g_fake_cpu_instance = nullptr;
static FakeCpuAarch64& cpu() {
assert(g_fake_cpu_instance != nullptr);
return *g_fake_cpu_instance;
}
// Define OS dependent mock functions
#if defined(CPU_FEATURES_OS_FREEBSD) || defined(CPU_FEATURES_OS_OPENBSD) || defined(CPU_FEATURES_OS_LINUX)
extern "C" uint64_t GetMidrEl1(void) { return cpu().GetMidrEl1(); }
#elif defined(CPU_FEATURES_OS_MACOS)
extern "C" bool GetDarwinSysCtlByName(const char* name) {
return cpu().GetDarwinSysCtlByName(name);
}
extern "C" int GetDarwinSysCtlByNameValue(const char* name) {
return cpu().GetDarwinSysCtlByNameValue(name);
}
#elif defined(CPU_FEATURES_OS_WINDOWS)
extern "C" bool GetWindowsIsProcessorFeaturePresent(DWORD dwProcessorFeature) {
return cpu().GetWindowsIsProcessorFeaturePresent(dwProcessorFeature);
}
extern "C" WORD GetWindowsNativeSystemInfoProcessorRevision() {
return cpu().GetWindowsNativeSystemInfoProcessorRevision();
}
#endif
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_F(CpuidAarch64Test, 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);
}
}
// AT_HWCAP tests
#if defined(CPU_FEATURES_OS_LINUX) || defined(CPU_FEATURES_OS_FREEBSD) || defined(CPU_FEATURES_OS_OPENBSD)
TEST_F(CpuidAarch64Test, 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_F(CpuidAarch64Test, 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);
}
#endif // defined(CPU_FEATURES_OS_LINUX) || defined(CPU_FEATURES_OS_FREEBSD) || defined(CPU_FEATURES_OS_OPENBSD)
// OS dependent tests
#if defined(CPU_FEATURES_OS_LINUX)
TEST_F(CpuidAarch64Test, 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);
EXPECT_FALSE(info.features.mte3);
EXPECT_FALSE(info.features.sme);
EXPECT_FALSE(info.features.smei16i64);
EXPECT_FALSE(info.features.smef64f64);
EXPECT_FALSE(info.features.smei8i32);
EXPECT_FALSE(info.features.smef16f32);
EXPECT_FALSE(info.features.smeb16f32);
EXPECT_FALSE(info.features.smef32f32);
EXPECT_FALSE(info.features.smefa64);
EXPECT_FALSE(info.features.wfxt);
EXPECT_FALSE(info.features.ebf16);
EXPECT_FALSE(info.features.sveebf16);
EXPECT_FALSE(info.features.cssc);
EXPECT_FALSE(info.features.rprfm);
EXPECT_FALSE(info.features.sve2p1);
EXPECT_FALSE(info.features.sme2);
EXPECT_FALSE(info.features.sme2p1);
EXPECT_FALSE(info.features.smei16i32);
EXPECT_FALSE(info.features.smebi32i32);
EXPECT_FALSE(info.features.smeb16b16);
EXPECT_FALSE(info.features.smef16f16);
EXPECT_FALSE(info.features.mops);
EXPECT_FALSE(info.features.hbc);
EXPECT_FALSE(info.features.sveb16b16);
EXPECT_FALSE(info.features.lrcpc3);
EXPECT_FALSE(info.features.lse128);
EXPECT_FALSE(info.features.fpmr);
EXPECT_FALSE(info.features.lut);
EXPECT_FALSE(info.features.faminmax);
EXPECT_FALSE(info.features.f8cvt);
EXPECT_FALSE(info.features.f8fma);
EXPECT_FALSE(info.features.f8dp4);
EXPECT_FALSE(info.features.f8dp2);
EXPECT_FALSE(info.features.f8e4m3);
EXPECT_FALSE(info.features.f8e5m2);
EXPECT_FALSE(info.features.smelutv2);
EXPECT_FALSE(info.features.smef8f16);
EXPECT_FALSE(info.features.smef8f32);
EXPECT_FALSE(info.features.smesf8fma);
EXPECT_FALSE(info.features.smesf8dp4);
EXPECT_FALSE(info.features.smesf8dp2);
EXPECT_FALSE(info.features.poe);
}
#elif defined(CPU_FEATURES_OS_MACOS)
TEST_F(CpuidAarch64Test, FromDarwinSysctlFromName) {
cpu().SetDarwinSysCtlByName("hw.optional.floatingpoint");
cpu().SetDarwinSysCtlByName("hw.optional.neon");
cpu().SetDarwinSysCtlByName("hw.optional.AdvSIMD_HPFPCvt");
cpu().SetDarwinSysCtlByName("hw.optional.arm.FEAT_FP16");
cpu().SetDarwinSysCtlByName("hw.optional.arm.FEAT_LSE");
cpu().SetDarwinSysCtlByName("hw.optional.armv8_crc32");
cpu().SetDarwinSysCtlByName("hw.optional.arm.FEAT_FHM");
cpu().SetDarwinSysCtlByName("hw.optional.arm.FEAT_SHA512");
cpu().SetDarwinSysCtlByName("hw.optional.arm.FEAT_SHA3");
cpu().SetDarwinSysCtlByName("hw.optional.amx_version");
cpu().SetDarwinSysCtlByName("hw.optional.ucnormal_mem");
cpu().SetDarwinSysCtlByName("hw.optional.arm64");
cpu().SetDarwinSysCtlByNameValue("hw.cputype", 16777228);
cpu().SetDarwinSysCtlByNameValue("hw.cpusubtype", 2);
cpu().SetDarwinSysCtlByNameValue("hw.cpu64bit", 1);
cpu().SetDarwinSysCtlByNameValue("hw.cpufamily", 458787763);
cpu().SetDarwinSysCtlByNameValue("hw.cpusubfamily", 2);
const auto info = GetAarch64Info();
EXPECT_EQ(info.implementer, 0x100000C);
EXPECT_EQ(info.variant, 2);
EXPECT_EQ(info.part, 0x1B588BB3);
EXPECT_EQ(info.revision, 2);
EXPECT_TRUE(info.features.fp);
EXPECT_FALSE(info.features.asimd);
EXPECT_FALSE(info.features.evtstrm);
EXPECT_FALSE(info.features.aes);
EXPECT_FALSE(info.features.pmull);
EXPECT_FALSE(info.features.sha1);
EXPECT_FALSE(info.features.sha2);
EXPECT_TRUE(info.features.crc32);
EXPECT_TRUE(info.features.atomics);
EXPECT_TRUE(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_TRUE(info.features.sha3);
EXPECT_FALSE(info.features.sm3);
EXPECT_FALSE(info.features.sm4);
EXPECT_FALSE(info.features.asimddp);
EXPECT_TRUE(info.features.sha512);
EXPECT_FALSE(info.features.sve);
EXPECT_TRUE(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);
}
#elif 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);
}
#elif defined(CPU_FEATURES_OS_FREEBSD) || defined(CPU_FEATURES_OS_OPENBSD)
TEST_F(CpuidAarch64Test, MrsMidrEl1_RPI4) {
ResetHwcaps();
SetHardwareCapabilities(AARCH64_HWCAP_FP | AARCH64_HWCAP_CPUID, 0);
cpu().SetMidrEl1(0x410FD083);
const auto info = GetAarch64Info();
EXPECT_EQ(info.implementer, 0x41);
EXPECT_EQ(info.variant, 0);
EXPECT_EQ(info.part, 0xD08);
EXPECT_EQ(info.revision, 0x3);
EXPECT_TRUE(info.features.fp);
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);
}
#endif // CPU_FEATURES_OS_FREEBSD
} // namespace
} // namespace cpu_features
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