获取系统位数

#include <ntddk.h>  



typedef struct _SYSTEM_PROCESSOR_INFORMATION {
	USHORT ProcessorArchitecture;
	USHORT ProcessorLevel;
	USHORT ProcessorRevision;
	USHORT Reserved;
	ULONG ProcessorFeatureBits;
} SYSTEM_PROCESSOR_INFORMATION, *PSYSTEM_PROCESSOR_INFORMATION;

typedef enum _SYSTEM_INFORMATION_CLASS {
	SystemBasicInformation,
	SystemProcessorInformation,             // obsolete...delete
	SystemPerformanceInformation,
	SystemTimeOfDayInformation,
	SystemPathInformation,
	SystemProcessInformation,
	SystemCallCountInformation,
	SystemDeviceInformation,
	SystemProcessorPerformanceInformation,
	SystemFlagsInformation,
	SystemCallTimeInformation,
	SystemModuleInformation,
	SystemLocksInformation,
	SystemStackTraceInformation,
	SystemPagedPoolInformation,
	SystemNonPagedPoolInformation,
	SystemHandleInformation,
	SystemObjectInformation,
	SystemPageFileInformation,
	SystemVdmInstemulInformation,
	SystemVdmBopInformation,
	SystemFileCacheInformation,
	SystemPoolTagInformation,
	SystemInterruptInformation,
	SystemDpcBehaviorInformation,
	SystemFullMemoryInformation,
	SystemLoadGdiDriverInformation,
	SystemUnloadGdiDriverInformation,
	SystemTimeAdjustmentInformation,
	SystemSummaryMemoryInformation,
	SystemMirrorMemoryInformation,
	SystemPerformanceTraceInformation,
	SystemObsolete0,
	SystemExceptionInformation,
	SystemCrashDumpStateInformation,
	SystemKernelDebuggerInformation,
	SystemContextSwitchInformation,
	SystemRegistryQuotaInformation,
	SystemExtendServiceTableInformation,
	SystemPrioritySeperation,
	SystemVerifierAddDriverInformation,
	SystemVerifierRemoveDriverInformation,
	SystemProcessorIdleInformation,
	SystemLegacyDriverInformation,
	SystemCurrentTimeZoneInformation,
	SystemLookasideInformation,
	SystemTimeSlipNotification,
	SystemSessionCreate,
	SystemSessionDetach,
	SystemSessionInformation,
	SystemRangeStartInformation,
	SystemVerifierInformation,
	SystemVerifierThunkExtend,
	SystemSessionProcessInformation,
	SystemLoadGdiDriverInSystemSpace,
	SystemNumaProcessorMap,
	SystemPrefetcherInformation,
	SystemExtendedProcessInformation,
	SystemRecommendedSharedDataAlignment,
	SystemComPlusPackage,
	SystemNumaAvailableMemory,
	SystemProcessorPowerInformation,
	SystemEmulationBasicInformation,
	SystemEmulationProcessorInformation,
	SystemExtendedHandleInformation,
	SystemLostDelayedWriteInformation,
	SystemBigPoolInformation,
	SystemSessionPoolTagInformation,
	SystemSessionMappedViewInformation,
	SystemHotpatchInformation,
	SystemObjectSecurityMode,
	SystemWatchdogTimerHandler,
	SystemWatchdogTimerInformation,
	SystemLogicalProcessorInformation,
	SystemWow64SharedInformation,
	SystemRegisterFirmwareTableInformationHandler,
	SystemFirmwareTableInformation,
	SystemModuleInformationEx,
	SystemVerifierTriageInformation,
	SystemSuperfetchInformation,
	SystemMemoryListInformation,
	SystemFileCacheInformationEx,
	MaxSystemInfoClass  // MaxSystemInfoClass should always be the last enum
} SYSTEM_INFORMATION_CLASS;


#define PROCESSOR_ARCHITECTURE_INTEL            0
#define PROCESSOR_ARCHITECTURE_MIPS             1
#define PROCESSOR_ARCHITECTURE_ALPHA            2
#define PROCESSOR_ARCHITECTURE_PPC              3
#define PROCESSOR_ARCHITECTURE_SHX              4
#define PROCESSOR_ARCHITECTURE_ARM              5
#define PROCESSOR_ARCHITECTURE_IA64             6
#define PROCESSOR_ARCHITECTURE_ALPHA64          7
#define PROCESSOR_ARCHITECTURE_MSIL             8
#define PROCESSOR_ARCHITECTURE_AMD64            9
#define PROCESSOR_ARCHITECTURE_IA32_ON_WIN64    10


NTSTATUS ZwQuerySystemInformation(SYSTEM_INFORMATION_CLASS SystemInformationClass,PVOID SystemInformation,ULONG SystemInformationLength, PULONG ReturnLength);

VOID DriverUnload(IN PDRIVER_OBJECT DriverObject)
{
	return;
}

NTSTATUS DriverEntry(IN PDRIVER_OBJECT DriverObject, IN PUNICODE_STRING RegistryPath)
{

	DriverObject->DriverUnload = DriverUnload;

	DbgBreakPoint();


	ULONG ReturnLength;
	SYSTEM_PROCESSOR_INFORMATION SysProcessorInfo = {0};
	NTSTATUS status = ZwQuerySystemInformation(SystemProcessorInformation, &SysProcessorInfo, sizeof(SYSTEM_PROCESSOR_INFORMATION), &ReturnLength);
	if (NT_SUCCESS(status))
	{
		if (SysProcessorInfo.ProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64)
		{
			KdPrint(("win64\n"));
		}
		else if (SysProcessorInfo.ProcessorArchitecture == PROCESSOR_ARCHITECTURE_INTEL)
		{
			KdPrint(("win32\n"));
		}
		else
		{
			KdPrint(("no\n"));
		}
	}

	return STATUS_SUCCESS;
}