83 lines
2.1 KiB
C++
83 lines
2.1 KiB
C++
|
#include "cpu/CPU.h"
|
||
|
|
#include <cpuid.h>
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
const char* CPU::get_vendor_string()
|
||
|
|
{
|
||
|
|
static bool cached = false;
|
||
|
|
static char vendor[13];
|
||
|
|
if (cached) { return vendor; }
|
||
|
|
else
|
||
|
|
{
|
||
|
|
unsigned int unused, ebx, ecx, edx;
|
||
|
|
__get_cpuid(0, &unused, &ebx, &ecx, &edx);
|
||
|
|
memcpy(vendor, &ebx, 4);
|
||
|
|
memcpy(&vendor[4], &edx, 4);
|
||
|
|
memcpy(&vendor[8], &ecx, 4);
|
||
|
|
vendor[12] = 0;
|
||
|
|
cached = true;
|
||
|
|
return vendor;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
const char* CPU::get_brand_string()
|
||
|
|
{
|
||
|
|
static bool cached = false;
|
||
|
|
static char brand[49];
|
||
|
|
if (cached) { return brand; }
|
||
|
|
else
|
||
|
|
{
|
||
|
|
unsigned int eax, ebx, ecx, edx;
|
||
|
|
__get_cpuid(0x80000002, &eax, &ebx, &ecx, &edx);
|
||
|
|
memcpy(brand, &eax, 4);
|
||
|
|
memcpy(&brand[4], &ebx, 4);
|
||
|
|
memcpy(&brand[8], &ecx, 4);
|
||
|
|
memcpy(&brand[12], &edx, 4);
|
||
|
|
__get_cpuid(0x80000003, &eax, &ebx, &ecx, &edx);
|
||
|
|
memcpy(&brand[16], &eax, 4);
|
||
|
|
memcpy(&brand[16 + 4], &ebx, 4);
|
||
|
|
memcpy(&brand[16 + 8], &ecx, 4);
|
||
|
|
memcpy(&brand[16 + 12], &edx, 4);
|
||
|
|
__get_cpuid(0x80000004, &eax, &ebx, &ecx, &edx);
|
||
|
|
memcpy(&brand[32], &eax, 4);
|
||
|
|
memcpy(&brand[32 + 4], &ebx, 4);
|
||
|
|
memcpy(&brand[32 + 8], &ecx, 4);
|
||
|
|
memcpy(&brand[32 + 12], &edx, 4);
|
||
|
|
brand[48] = 0;
|
||
|
|
cached = true;
|
||
|
|
return brand;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
uint64_t CPU::get_feature_bitmask()
|
||
|
|
{
|
||
|
|
static uint64_t bitmask = 0;
|
||
|
|
static bool cached = false;
|
||
|
|
if (cached) return bitmask;
|
||
|
|
unsigned int unused;
|
||
|
|
unsigned int ecx = 0;
|
||
|
|
unsigned int edx = 0;
|
||
|
|
__get_cpuid(1, &unused, &unused, &ecx, &edx);
|
||
|
|
bitmask = ((uint64_t)ecx << 32) | (uint64_t)edx;
|
||
|
|
cached = true;
|
||
|
|
return bitmask;
|
||
|
|
}
|
||
|
|
|
||
|
|
static bool _has_feature(int feature)
|
||
|
|
{
|
||
|
|
return (CPU::get_feature_bitmask() & (uint64_t)(1 << feature)) > 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool CPU::has_feature(CPU::Features feature)
|
||
|
|
{
|
||
|
|
return _has_feature((int)feature);
|
||
|
|
}
|
||
|
|
|
||
|
|
uint64_t CPU::get_initial_apic_id()
|
||
|
|
{
|
||
|
|
unsigned int unused;
|
||
|
|
unsigned int ebx = 0;
|
||
|
|
__get_cpuid(1, &unused, &ebx, &unused, &unused);
|
||
|
|
return ebx >> 24;
|
||
|
|
}
|