请给一个MmGetPhysicalMemoryRanges的使用例子
时间: 2024-05-12 20:20:29 浏览: 216
以下是一个使用MmGetPhysicalMemoryRanges函数的示例:
```
#include <ntddk.h>
VOID DriverUnload(PDRIVER_OBJECT DriverObject)
{
UNREFERENCED_PARAMETER(DriverObject);
}
NTSTATUS DriverEntry(PDRIVER_OBJECT DriverObject, PUNICODE_STRING RegistryPath)
{
UNREFERENCED_PARAMETER(RegistryPath);
PHYSICAL_MEMORY_RANGE MemoryRanges[16];
ULONG NumberOfRanges = 0;
MmGetPhysicalMemoryRanges(MemoryRanges, 16, &NumberOfRanges);
DbgPrint("Number of memory ranges: %d\n", NumberOfRanges);
for (ULONG i = 0; i < NumberOfRanges; i++)
{
DbgPrint("Physical memory range %d:\n", i);
DbgPrint("\tBase address: %I64x\n", MemoryRanges[i].BaseAddress.QuadPart);
DbgPrint("\tNumber of pages: %I64x\n", MemoryRanges[i].NumberOfBytes / PAGE_SIZE);
}
DriverObject->DriverUnload = DriverUnload;
return STATUS_SUCCESS;
}
```
该驱动程序在加载时调用MmGetPhysicalMemoryRanges函数来获取物理内存范围,然后打印出每个范围的基地址和页面数。