private static void __cyclesrdtsc(int *target)
{
/*
* push eax
* push ecx
* push edx
* lea esi, target
* rdtsc
* mov [esi+4], eax
* mov [esi], edx
* pop edx
* pop ecx
* pop eax
* ret
*/
__cyclesrdtscptr = target;
string intname = LabelName.GetFullName(typeof(CPUImpl).GetTypeInfo().GetField(nameof(__cyclesrdtscptr)));
XS.Push(XSRegisters.EAX);
XS.Push(XSRegisters.ECX);
XS.Push(XSRegisters.EDX);
XS.Lea(XSRegisters.ESI, intname);
XS.Rdtsc();
XS.Set(XSRegisters.ESI, XSRegisters.EAX, destinationIsIndirect: true, destinationDisplacement: 4);
XS.Set(XSRegisters.ESI, XSRegisters.EDX, destinationIsIndirect: true);
XS.Push(XSRegisters.EDX);
XS.Push(XSRegisters.ECX);
XS.Push(XSRegisters.EAX);
XS.Return();
}
private static void __raterdmsr(int *target)
{
/*
* ; esi register layout: (mperf_hi, mperf_lo, aperf_hi, aperf_lo)
* ;
* ; int* ptr = new int[4];
* ;
* lea esi, ptr ;equivalent with `mov esi, &ptr`
* mov ecx, e7h
* rdmsr
* mov [esi + 4], eax
* mov [esi], edx
* mov ecx, e8h
* rdmsr
* mov [esi + 12], eax
* mov [esi + 8], edx
* xor eax, eax
* ret
*/
__raterdmsrptr = target;
string intname = LabelName.GetFullName(typeof(CPUImpl).GetTypeInfo().GetField(nameof(__raterdmsrptr)));
XS.Lea(XSRegisters.ESI, intname);
XS.Set(XSRegisters.ECX, 0xe7);
XS.Rdmsr();
XS.Set(XSRegisters.EAX, XSRegisters.ESI, destinationIsIndirect: true, destinationDisplacement: 4);
XS.Set(XSRegisters.EDX, XSRegisters.ESI, destinationIsIndirect: true, destinationDisplacement: 0);
XS.Set(XSRegisters.ECX, 0xe8);
XS.Rdmsr();
XS.Set(XSRegisters.EAX, XSRegisters.ESI, destinationIsIndirect: true, destinationDisplacement: 12);
XS.Set(XSRegisters.EDX, XSRegisters.ESI, destinationIsIndirect: true, destinationDisplacement: 8);
XS.Xor(XSRegisters.EAX, XSRegisters.EAX); // XS.Set(XSRegisters.EAX, 0);
XS.Return();
}
internal static void FetchCPUVendor(int *target)
{
/*
* lea esi, target
* xor eax, eax
* cpuid
* mov [esi], ebx
* mov [esi + 4], edx
* mov [esi + 8], ecx
* ret
*/
__vendortargetptr = target;
string intname = LabelName.GetFullName(typeof(CPUImpl).GetTypeInfo().GetField(nameof(__vendortargetptr)));
XS.Lea(XSRegisters.ESI, intname); // new Lea { DestinationReg = RegistersEnum.ESI, SourceRef = ElementReference.New(intname) };
XS.Cpuid();
XS.Set(XSRegisters.ESI, XSRegisters.EBX, destinationIsIndirect: true);
XS.Set(XSRegisters.ESI, XSRegisters.EDX, destinationIsIndirect: true, destinationDisplacement: 4);
XS.Set(XSRegisters.ESI, XSRegisters.ECX, destinationIsIndirect: true, destinationDisplacement: 8);
XS.Return();
}
