diff options
Diffstat (limited to 'Kernel/Arch')
| -rw-r--r-- | Kernel/Arch/i386/CPU.cpp | 30 | ||||
| -rw-r--r-- | Kernel/Arch/i386/CPU.h | 9 |
2 files changed, 35 insertions, 4 deletions
diff --git a/Kernel/Arch/i386/CPU.cpp b/Kernel/Arch/i386/CPU.cpp index 99ff67a368..6b414e0a73 100644 --- a/Kernel/Arch/i386/CPU.cpp +++ b/Kernel/Arch/i386/CPU.cpp @@ -785,14 +785,26 @@ void Processor::cpu_detect() m_features = static_cast<CPUFeature>(0); CPUID processor_info(0x1); + if (processor_info.edx() & (1 << 4)) + set_feature(CPUFeature::TSC); if (processor_info.edx() & (1 << 6)) set_feature(CPUFeature::PAE); if (processor_info.edx() & (1 << 13)) set_feature(CPUFeature::PGE); + if (processor_info.edx() & (1 << 23)) + set_feature(CPUFeature::MMX); if (processor_info.edx() & (1 << 25)) set_feature(CPUFeature::SSE); - if (processor_info.edx() & (1 << 4)) - set_feature(CPUFeature::TSC); + if (processor_info.edx() & (1 << 26)) + set_feature(CPUFeature::SSE2); + if (processor_info.ecx() & (1 << 0)) + set_feature(CPUFeature::SSE3); + if (processor_info.ecx() & (1 << 9)) + set_feature(CPUFeature::SSSE3); + if (processor_info.ecx() & (1 << 19)) + set_feature(CPUFeature::SSE4_1); + if (processor_info.ecx() & (1 << 20)) + set_feature(CPUFeature::SSE4_2); if (processor_info.ecx() & (1 << 30)) set_feature(CPUFeature::RDRAND); if (processor_info.edx() & (1 << 11)) { @@ -916,6 +928,18 @@ String Processor::features_string() const return "sep"; case CPUFeature::SYSCALL: return "syscall"; + case CPUFeature::MMX: + return "mmx"; + case CPUFeature::SSE2: + return "sse2"; + case CPUFeature::SSE3: + return "sse3"; + case CPUFeature::SSSE3: + return "ssse3"; + case CPUFeature::SSE4_1: + return "sse4.1"; + case CPUFeature::SSE4_2: + return "sse4.2"; // no default statement here intentionally so that we get // a warning if a new feature is forgotten to be added here } @@ -923,7 +947,7 @@ String Processor::features_string() const return "???"; }; bool first = true; - for (u32 flag = 1; flag < sizeof(m_features) * 8; flag <<= 1) { + for (u32 flag = 1; flag != 0; flag <<= 1) { if ((static_cast<u32>(m_features) & flag) != 0) { if (first) first = false; diff --git a/Kernel/Arch/i386/CPU.h b/Kernel/Arch/i386/CPU.h index f159f01a5a..44bbcfb4c5 100644 --- a/Kernel/Arch/i386/CPU.h +++ b/Kernel/Arch/i386/CPU.h @@ -591,6 +591,7 @@ private: SplitQword m_start; }; +// FIXME: This can't hold every CPU feature as-is. enum class CPUFeature : u32 { NX = (1 << 0), PAE = (1 << 1), @@ -603,7 +604,13 @@ enum class CPUFeature : u32 { TSC = (1 << 8), UMIP = (1 << 9), SEP = (1 << 10), - SYSCALL = (1 << 11) + SYSCALL = (1 << 11), + MMX = (1 << 12), + SSE2 = (1 << 13), + SSE3 = (1 << 14), + SSSE3 = (1 << 15), + SSE4_1 = (1 << 16), + SSE4_2 = (1 << 17) }; class Thread; |