PHYSICAL_ADDRESS
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这是我查找DDK的 ntdef.h 文件找到PHYSICAL_ADDRESS的定义:
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typedef union _LARGE_INTEGER {
struct {
ULONG LowPart;
LONG HighPart;
};
struct {
ULONG LowPart;
LONG HighPart;
} u;
#endif //MIDL_PASS
LONGLONG QuadPart;
} LARGE_INTEGER;
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typedef LARGE_INTEGER PHYSICAL_ADDRESS, *PPHYSICAL_ADDRESS;
物理内存结构体PHYSICAL_ADDRESS(定义在ceddkh中,用64位来代表物理地址,对大多数32位的cpu,只需吧HighPart设置为0即可)。
LARGE_INTEGER Union
Represents a 64-bit signed integer value.
Note Your C compiler may support 64-bit integers natively. For example, Microsoft Visual C++ supports the__int64 sized integer type. For more information, see the documentation included with your C compiler.
Syntax
typedef union _LARGE_INTEGER { struct { DWORD LowPart; LONG HighPart; } ; struct { DWORD LowPart; LONG HighPart; } u; LONGLONG QuadPart;} LARGE_INTEGER, *PLARGE_INTEGER;
Members
- LowPart
The low-order 32 bits.
- HighPart
The high-order 32 bits.
- u
- LowPart
The low-order 32 bits.
- HighPart
The high-order 32 bits.
- QuadPart
A signed 64-bit integer.
Remarks
The LARGE_INTEGER structure is actually a union. If your compiler has built-in support for 64-bit integers, use theQuadPart member to store the 64-bit integer. Otherwise, use theLowPart and HighPart members to store the 64-bit integer.