138 lines
4.2 KiB
C++
138 lines
4.2 KiB
C++
#include <kernel/CPUID.h>
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namespace CPUID
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{
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void get_cpuid(uint32_t code, uint32_t* out)
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{
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asm volatile("cpuid" : "=a"(out[0]), "=b"(out[1]), "=c"(out[2]), "=d"(out[3]) : "a"(code));
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}
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void get_cpuid_string(uint32_t code, uint32_t* out)
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{
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asm volatile ("cpuid": "=a"(out[0]), "=b"(out[0]), "=d"(out[1]), "=c"(out[2]) : "a"(code));
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}
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const char* get_vendor()
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{
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static char vendor[13] {};
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get_cpuid_string(0x00, (uint32_t*)vendor);
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vendor[12] = '\0';
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return vendor;
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}
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void get_features(uint32_t& ecx, uint32_t& edx)
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{
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uint32_t buffer[4] {};
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get_cpuid(0x01, buffer);
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ecx = buffer[2];
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edx = buffer[3];
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}
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bool is_64_bit()
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{
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uint32_t buffer[4] {};
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get_cpuid(0x80000000, buffer);
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if (buffer[0] < 0x80000001)
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return false;
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get_cpuid(0x80000001, buffer);
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return buffer[3] & (1 << 29);
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}
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bool has_nxe()
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{
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uint32_t buffer[4] {};
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get_cpuid(0x80000000, buffer);
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if (buffer[0] < 0x80000001)
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return false;
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get_cpuid(0x80000001, buffer);
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return buffer[3] & (1 << 20);
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}
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bool has_pge()
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{
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uint32_t ecx, edx;
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get_features(ecx, edx);
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return edx & CPUID::EDX_PGE;
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}
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const char* feature_string_ecx(uint32_t feat)
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{
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switch (feat)
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{
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case Features::ECX_SSE3: return "ECX_SSE3";
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case Features::ECX_PCLMULQDQ: return "ECX_PCLMULQDQ";
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case Features::ECX_DTES64: return "ECX_DTES64";
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case Features::ECX_MONITOR: return "ECX_MONITOR";
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case Features::ECX_DS_CPL: return "ECX_DS_CPL";
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case Features::ECX_VMX: return "ECX_VMX";
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case Features::ECX_SMX: return "ECX_SMX";
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case Features::ECX_EST: return "ECX_EST";
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case Features::ECX_TM2: return "ECX_TM2";
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case Features::ECX_SSSE3: return "ECX_SSSE3";
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case Features::ECX_CNTX_ID: return "ECX_CNTX_ID";
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case Features::ECX_SDBG: return "ECX_SDBG";
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case Features::ECX_FMA: return "ECX_FMA";
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case Features::ECX_CX16: return "ECX_CX16";
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case Features::ECX_XTPR: return "ECX_XTPR";
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case Features::ECX_PDCM: return "ECX_PDCM";
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case Features::ECX_PCID: return "ECX_PCID";
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case Features::ECX_DCA: return "ECX_DCA";
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case Features::ECX_SSE4_1: return "ECX_SSE4_1";
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case Features::ECX_SSE4_2: return "ECX_SSE4_2";
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case Features::ECX_X2APIC: return "ECX_X2APIC";
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case Features::ECX_MOVBE: return "ECX_MOVBE";
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case Features::ECX_POPCNT: return "ECX_POPCNT";
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case Features::ECX_TSC_DEADLINE: return "ECX_TSC_DEADLINE";
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case Features::ECX_AES: return "ECX_AES";
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case Features::ECX_XSAVE: return "ECX_XSAVE";
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case Features::ECX_OSXSAVE: return "ECX_OSXSAVE";
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case Features::ECX_AVX: return "ECX_AVX";
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case Features::ECX_F16C: return "ECX_F16C";
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case Features::ECX_RDRND: return "ECX_RDRND";
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case Features::ECX_HYPERVISOR: return "ECX_HYPERVISOR";
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default: return "UNKNOWN";
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}
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}
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const char* feature_string_edx(uint32_t feat)
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{
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switch (feat)
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{
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case Features::EDX_FPU: return "EDX_FPU";
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case Features::EDX_VME: return "EDX_VME";
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case Features::EDX_DE: return "EDX_DE";
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case Features::EDX_PSE: return "EDX_PSE";
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case Features::EDX_TSC: return "EDX_TSC";
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case Features::EDX_MSR: return "EDX_MSR";
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case Features::EDX_PAE: return "EDX_PAE";
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case Features::EDX_MCE: return "EDX_MCE";
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case Features::EDX_CX8: return "EDX_CX8";
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case Features::EDX_APIC: return "EDX_APIC";
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case Features::EDX_SEP: return "EDX_SEP";
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case Features::EDX_MTRR: return "EDX_MTRR";
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case Features::EDX_PGE: return "EDX_PGE";
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case Features::EDX_MCA: return "EDX_MCA";
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case Features::EDX_CMOV: return "EDX_CMOV";
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case Features::EDX_PAT: return "EDX_PAT";
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case Features::EDX_PSE36: return "EDX_PSE36";
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case Features::EDX_PSN: return "EDX_PSN";
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case Features::EDX_CLFSH: return "EDX_CLFSH";
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case Features::EDX_DS: return "EDX_DS";
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case Features::EDX_ACPI: return "EDX_ACPI";
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case Features::EDX_MMX: return "EDX_MMX";
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case Features::EDX_FXSR: return "EDX_FXSR";
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case Features::EDX_SSE: return "EDX_SSE";
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case Features::EDX_SSE2: return "EDX_SSE2";
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case Features::EDX_SS: return "EDX_SS";
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case Features::EDX_HTT: return "EDX_HTT";
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case Features::EDX_TM: return "EDX_TM";
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case Features::EDX_IA64: return "EDX_IA64";
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case Features::EDX_PBE: return "EDX_PBE";
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default: return "NONE";
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}
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}
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}
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