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Add FreeBSD Arm64 support (#295)

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* Add FreeBSD Arm64 detection

Getting all the features is handled by reading /var/run/dmesg.boot. Feature detections were taken from the freebsd kernel code sys/arm64/arm64/identcpu.c

* Add FreeBSD Arm64 tests

* Add flagm, flagm2 and rng detection

* Add HWCAP FreeBSD AArch64

* Update include to use linux hwcaps for powerpc

* Add FreeBSD aarch64 impl

* Separate Hwacps to freebsd and linux implementation

* Add aarch64 midr_el1 implementation

* Add detection hwcap cpuid to hwcaps.h

* Add MIDR_EL1 tests
This commit is contained in:
Mykola Hohsadze
2023-09-19 12:02:25 +03:00
committed by GitHub
parent 494d9657ef
commit 89a3f0358a
11 changed files with 424 additions and 155 deletions
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57
test/cpuinfo_aarch64_test.cc
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@ -22,11 +22,20 @@
#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_LINUX)
#include "internal/cpuid_aarch64.h"
#endif // defined(CPU_FEATURES_OS_FREEBSD) || defined(CPU_FEATURES_OS_LINUX)
namespace cpu_features {
class FakeCpuAarch64 {
#if defined(CPU_FEATURES_OS_LINUX)
// No particular implementation for Linux as we use /proc/cpuinfo
#if defined(CPU_FEATURES_OS_FREEBSD) || 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_;
@ -80,8 +89,8 @@ static FakeCpuAarch64& cpu() {
}
// Define OS dependent mock functions
#if defined(CPU_FEATURES_OS_LINUX)
// No particular functions to implement for Linux as we use /proc/cpuinfo
#if defined(CPU_FEATURES_OS_FREEBSD) || 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);
@ -127,8 +136,8 @@ TEST_F(CpuidAarch64Test, Aarch64FeaturesEnum) {
}
}
// OS dependent tests
#if defined(CPU_FEATURES_OS_LINUX)
// AT_HWCAP tests
#if defined(CPU_FEATURES_OS_LINUX) || defined(CPU_FEATURES_OS_FREEBSD)
TEST_F(CpuidAarch64Test, FromHardwareCap) {
ResetHwcaps();
SetHardwareCapabilities(AARCH64_HWCAP_FP | AARCH64_HWCAP_AES, 0);
@ -196,7 +205,10 @@ TEST_F(CpuidAarch64Test, FromHardwareCap2) {
EXPECT_FALSE(info.features.dgh);
EXPECT_FALSE(info.features.rng);
}
#endif // defined(CPU_FEATURES_OS_LINUX) || defined(CPU_FEATURES_OS_FREEBSD)
// OS dependent tests
#if defined(CPU_FEATURES_OS_LINUX)
TEST_F(CpuidAarch64Test, ARMCortexA53) {
ResetHwcaps();
auto& fs = GetEmptyFilesystem();
@ -383,6 +395,37 @@ TEST_F(CpuidAarch64Test, WINDOWS_AARCH64_RPI4) {
EXPECT_FALSE(info.features.jscvt);
EXPECT_FALSE(info.features.lrcpc);
}
#endif // CPU_FEATURES_OS_WINDOWS
#elif defined(CPU_FEATURES_OS_FREEBSD)
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