Get SMBIOS physical address C/C++

The SMBIOS (System Management BIOS) physical address refers to the memory address where the SMBIOS table is located in the system’s physical memory. The SMBIOS table contains information about the system’s hardware components, such as the motherboard, processor, memory, and peripherals.

To retrieve the SMBIOS physical address, you can use the WMI (Windows Management Instrumentation) API in Windows. Here’s an example of how to obtain the SMBIOS physical address using C++ and the WMI API:

#include <Windows.h>
#include <iostream>

int main() {
    IWbemLocator* pLocator = nullptr;
    IWbemServices* pServices = nullptr;

    // Initialize COM
    CoInitializeEx(NULL, COINIT_MULTITHREADED);

    // Create WMI locator
    HRESULT hr = CoCreateInstance(
        CLSID_WbemLocator,
        0,
        CLSCTX_INPROC_SERVER,
        IID_IWbemLocator,
        (LPVOID*)&pLocator
    );

    if (SUCCEEDED(hr)) {
        // Connect to WMI service
        hr = pLocator->ConnectServer(
            _bstr_t(L"ROOT\\WMI"),
            nullptr,
            nullptr,
            0,
            NULL,
            0,
            0,
            &pServices
        );

        if (SUCCEEDED(hr)) {
            // Query for SMBIOS table physical address
            BSTR query = SysAllocString(L"SELECT * FROM MSSmBios_RawSMBiosTables");
            IEnumWbemClassObject* pEnum = nullptr;
            hr = pServices->ExecQuery(
                _bstr_t(L"WQL"),
                query,
                WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
                nullptr,
                &pEnum
            );

            if (SUCCEEDED(hr)) {
                IWbemClassObject* pObject = nullptr;
                ULONG fetched = 0;
                hr = pEnum->Next(WBEM_INFINITE, 1, &pObject, &fetched);

                if (SUCCEEDED(hr) && fetched > 0) {
                    VARIANT var;
                    hr = pObject->Get(L"SMBiosTablePhysicalAddress", 0, &var, nullptr, nullptr);
                    
                    if (SUCCEEDED(hr) && var.vt == VT_UI64) {
                        std::cout << "SMBIOS Physical Address: 0x" << std::hex << var.ullVal << std::endl;
                    }
                    VariantClear(&var);
                }

                pObject->Release();
                pEnum->Release();
            }
            SysFreeString(query);
        }

        pServices->Release();
        pLocator->Release();
    }

    // Uninitialize COM
    CoUninitialize();

    return 0;
}
This code snippet demonstrates how to connect to the WMI service, query for the SMBIOS table information, and retrieve the SMBIOS physical address. The physical address is stored in the "SMBiosTablePhysicalAddress" property of the "MSSmBios_RawSMBiosTables" WMI class.

Please note that you need to link against the appropriate WMI libraries and include the necessary headers to compile and run this code successfully. Additionally, it's important to handle error cases and release the allocated resources appropriately in a production environment.