/// <summary>
/// Initializes a new instance of the <see cref="CpuId" /> class.
/// </summary>
/// <param name="group">The group.</param>
/// <param name="thread">The thread.</param>
/// <param name="affinity">The affinity.</param>
private CpuId(int group, int thread, GroupAffinity affinity)
{
Thread = thread;
Group = group;
Affinity = affinity;
uint threadMaskWith;
uint coreMaskWith;
uint maxCpuidExt;
if (thread >= 64)
{
throw new ArgumentOutOfRangeException(nameof(thread));
}
uint maxCpuid;
if (OpCode.CpuId(CPUID_0, 0, out uint eax, out uint ebx, out uint ecx, out uint edx))
{
if (eax > 0)
{
maxCpuid = eax;
}
else
{
return;
}
StringBuilder vendorBuilder = new StringBuilder();
AppendRegister(vendorBuilder, ebx);
AppendRegister(vendorBuilder, edx);
AppendRegister(vendorBuilder, ecx);
string cpuVendor = vendorBuilder.ToString();
switch (cpuVendor)
{
case "GenuineIntel":
Vendor = Vendor.Intel;
break;
case "AuthenticAMD":
Vendor = Vendor.AMD;
break;
default:
Vendor = Vendor.Unknown;
break;
}
if (OpCode.CpuId(CPUID_EXT, 0, out eax, out _, out _, out _))
{
if (eax > CPUID_EXT)
{
maxCpuidExt = eax - CPUID_EXT;
}
else
{
return;
}
}
else
{
throw new ArgumentOutOfRangeException(nameof(thread));
}
}