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https://github.com/RGBCube/serenity
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Kernel: Support all Intel-defined CPUID feature flags for EAX=1
We're now able to detect all the regular CPUID feature flags from ECX/EDX for EAX=1 :^) None of the new ones are being used for anything yet, but they will show up in /proc/cpuinfo and subsequently lscpu and SystemMonitor. Note that I replaced the periods from the SSE 4.1 and 4.2 instructions with underscores, which matches the internal enum names, Linux's /proc/cpuinfo and the general pattern of replacing special characters with underscores to limit feature names to [a-z0-9_]. The enum member stringification has been moved to a new function for better re-usability and to avoid cluttering up Processor.cpp.
This commit is contained in:
Linus Groh
Andreas Kling
parent
bc7ec02a82
commit
6ca03b915e
5 changed files with 337 additions and 91 deletions
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@ -89,31 +89,109 @@ UNMAP_AFTER_INIT void Processor::cpu_detect()
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if (processor_info.ecx() & (1 << 0))
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m_features |= CPUFeature::SSE3;
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if (processor_info.ecx() & (1 << 1))
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m_features |= CPUFeature::PCLMULQDQ;
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if (processor_info.ecx() & (1 << 2))
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m_features |= CPUFeature::DTES64;
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if (processor_info.ecx() & (1 << 3))
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m_features |= CPUFeature::MONITOR;
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if (processor_info.ecx() & (1 << 4))
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m_features |= CPUFeature::DS_CPL;
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if (processor_info.ecx() & (1 << 5))
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m_features |= CPUFeature::VMX;
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if (processor_info.ecx() & (1 << 6))
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m_features |= CPUFeature::SMX;
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if (processor_info.ecx() & (1 << 7))
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m_features |= CPUFeature::EST;
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if (processor_info.ecx() & (1 << 8))
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m_features |= CPUFeature::TM2;
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if (processor_info.ecx() & (1 << 9))
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m_features |= CPUFeature::SSSE3;
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if (processor_info.ecx() & (1 << 10))
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m_features |= CPUFeature::CNXT_ID;
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if (processor_info.ecx() & (1 << 11))
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m_features |= CPUFeature::SDBG;
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if (processor_info.ecx() & (1 << 12))
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m_features |= CPUFeature::FMA;
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if (processor_info.ecx() & (1 << 13))
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m_features |= CPUFeature::CX16;
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if (processor_info.ecx() & (1 << 14))
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m_features |= CPUFeature::XTPR;
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if (processor_info.ecx() & (1 << 15))
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m_features |= CPUFeature::PDCM;
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if (processor_info.ecx() & (1 << 17))
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m_features |= CPUFeature::PCID;
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if (processor_info.ecx() & (1 << 18))
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m_features |= CPUFeature::DCA;
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if (processor_info.ecx() & (1 << 19))
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m_features |= CPUFeature::SSE4_1;
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if (processor_info.ecx() & (1 << 20))
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m_features |= CPUFeature::SSE4_2;
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if (processor_info.ecx() & (1 << 21))
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m_features |= CPUFeature::X2APIC;
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if (processor_info.ecx() & (1 << 22))
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m_features |= CPUFeature::MOVBE;
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if (processor_info.ecx() & (1 << 23))
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m_features |= CPUFeature::POPCNT;
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if (processor_info.ecx() & (1 << 24))
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m_features |= CPUFeature::TSC_DEADLINE;
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if (processor_info.ecx() & (1 << 25))
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m_features |= CPUFeature::AES;
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if (processor_info.ecx() & (1 << 26))
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m_features |= CPUFeature::XSAVE;
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if (processor_info.ecx() & (1 << 27))
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m_features |= CPUFeature::OSXSAVE;
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if (processor_info.ecx() & (1 << 28))
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m_features |= CPUFeature::AVX;
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if (processor_info.ecx() & (1 << 29))
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m_features |= CPUFeature::F16C;
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if (processor_info.ecx() & (1 << 30))
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m_features |= CPUFeature::RDRAND;
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if (processor_info.ecx() & (1 << 31))
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m_features |= CPUFeature::HYPERVISOR;
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if (processor_info.edx() & (1 << 0))
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m_features |= CPUFeature::FPU;
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if (processor_info.edx() & (1 << 1))
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m_features |= CPUFeature::VME;
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if (processor_info.edx() & (1 << 2))
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m_features |= CPUFeature::DE;
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if (processor_info.edx() & (1 << 3))
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m_features |= CPUFeature::PSE;
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if (processor_info.edx() & (1 << 4))
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m_features |= CPUFeature::TSC;
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if (processor_info.edx() & (1 << 5))
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m_features |= CPUFeature::MSR;
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if (processor_info.edx() & (1 << 6))
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m_features |= CPUFeature::PAE;
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if (processor_info.edx() & (1 << 13))
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m_features |= CPUFeature::PGE;
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if (processor_info.edx() & (1 << 7))
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m_features |= CPUFeature::MCE;
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if (processor_info.edx() & (1 << 8))
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m_features |= CPUFeature::CX8;
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if (processor_info.edx() & (1 << 9))
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m_features |= CPUFeature::APIC;
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if (processor_info.edx() & (1 << 11))
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handle_edx_bit_11_feature();
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if (processor_info.edx() & (1 << 12))
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m_features |= CPUFeature::MTRR;
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if (processor_info.edx() & (1 << 13))
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m_features |= CPUFeature::PGE;
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if (processor_info.edx() & (1 << 14))
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m_features |= CPUFeature::MCA;
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if (processor_info.edx() & (1 << 15))
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m_features |= CPUFeature::CMOV;
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if (processor_info.edx() & (1 << 16))
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m_features |= CPUFeature::PAT;
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if (processor_info.edx() & (1 << 17))
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m_features |= CPUFeature::PSE36;
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if (processor_info.edx() & (1 << 18))
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m_features |= CPUFeature::PSN;
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if (processor_info.edx() & (1 << 19))
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m_features |= CPUFeature::CLFLUSH;
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if (processor_info.edx() & (1 << 21))
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m_features |= CPUFeature::DS;
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if (processor_info.edx() & (1 << 22))
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m_features |= CPUFeature::ACPI;
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if (processor_info.edx() & (1 << 23))
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m_features |= CPUFeature::MMX;
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if (processor_info.edx() & (1 << 24))
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@ -122,6 +200,16 @@ UNMAP_AFTER_INIT void Processor::cpu_detect()
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m_features |= CPUFeature::SSE;
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if (processor_info.edx() & (1 << 26))
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m_features |= CPUFeature::SSE2;
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if (processor_info.edx() & (1 << 27))
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m_features |= CPUFeature::SS;
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if (processor_info.edx() & (1 << 28))
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m_features |= CPUFeature::HTT;
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if (processor_info.edx() & (1 << 29))
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m_features |= CPUFeature::TM;
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if (processor_info.edx() & (1 << 30))
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m_features |= CPUFeature::IA64;
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if (processor_info.edx() & (1 << 31))
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m_features |= CPUFeature::PBE;
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CPUID extended_features(0x7);
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if (extended_features.ebx() & (1 << 7))
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@ -290,63 +378,6 @@ UNMAP_AFTER_INIT void Processor::cpu_setup()
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NonnullOwnPtr<KString> Processor::features_string() const
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{
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StringBuilder builder;
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auto feature_to_str = [](CPUFeature::Type const& feature) -> StringView {
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if (feature == CPUFeature::NX)
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return "nx"sv;
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if (feature == CPUFeature::PAE)
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return "pae"sv;
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if (feature == CPUFeature::PGE)
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return "pge"sv;
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if (feature == CPUFeature::RDRAND)
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return "rdrand"sv;
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if (feature == CPUFeature::RDSEED)
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return "rdseed"sv;
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if (feature == CPUFeature::SMAP)
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return "smap"sv;
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if (feature == CPUFeature::SMEP)
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return "smep"sv;
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if (feature == CPUFeature::SSE)
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return "sse"sv;
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if (feature == CPUFeature::TSC)
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return "tsc"sv;
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if (feature == CPUFeature::RDTSCP)
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return "rdtscp"sv;
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if (feature == CPUFeature::CONSTANT_TSC)
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return "constant_tsc"sv;
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if (feature == CPUFeature::NONSTOP_TSC)
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return "nonstop_tsc"sv;
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if (feature == CPUFeature::UMIP)
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return "umip"sv;
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if (feature == CPUFeature::SEP)
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return "sep"sv;
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if (feature == CPUFeature::SYSCALL)
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return "syscall"sv;
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if (feature == CPUFeature::MMX)
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return "mmx"sv;
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if (feature == CPUFeature::FXSR)
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return "fxsr"sv;
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if (feature == CPUFeature::SSE2)
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return "sse2"sv;
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if (feature == CPUFeature::SSE3)
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return "sse3"sv;
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if (feature == CPUFeature::SSSE3)
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return "ssse3"sv;
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if (feature == CPUFeature::SSE4_1)
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return "sse4.1"sv;
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if (feature == CPUFeature::SSE4_2)
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return "sse4.2"sv;
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if (feature == CPUFeature::XSAVE)
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return "xsave"sv;
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if (feature == CPUFeature::AVX)
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return "avx"sv;
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if (feature == CPUFeature::LM)
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return "lm"sv;
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if (feature == CPUFeature::HYPERVISOR)
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return "hypervisor"sv;
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if (feature == CPUFeature::PAT)
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return "pat"sv;
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VERIFY_NOT_REACHED();
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};
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bool first = true;
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for (auto feature = CPUFeature::Type(1u); feature != CPUFeature::__End; feature <<= 1u) {
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if (has_feature(feature)) {
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@ -354,8 +385,7 @@ NonnullOwnPtr<KString> Processor::features_string() const
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first = false;
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else
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MUST(builder.try_append(' '));
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auto str = feature_to_str(feature);
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MUST(builder.try_append(str));
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MUST(builder.try_append(cpu_feature_to_string_view(feature)));
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}
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}
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return KString::must_create(builder.string_view());
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