VC6下编译进Ring0代码的疑惑

时间:2009-12-30 15:42来源:未知作者:admin 点击: 次

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VC6下编译进Ring0代码的疑惑,操作系统XPSP2,CPU:AMD3000+。现象，VC6总会优化代码，编译出来的代码不是想要的。代码如下： // tt.cpp : Defines the entry point for the application. // #include "stdafx.h" #d

VC6下编译进Ring0代码的疑惑,操作系统XPSP2,CPU:AMD3000+。现象，VC6总会优化代码，编译出来的代码不是想要的。

代码如下：

// tt.cpp : Defines the entry point for the application.
//

#include "stdafx.h"

#define _X86_

#include <windows.h>
#include <stdio.h>
#include <aclapi.h>
#include <conio.h>
#include <windef.h>
#include <shellapi.h>

typedef long NTSTATUS;
typedef unsigned short USHORT;
#define NT_SUCCESS(Status) ((NTSTATUS)(Status) >= 0)
#define OBJ_INHERIT 0x00000002L
#define OBJ_PERMANENT 0x00000010L
#define OBJ_EXCLUSIVE 0x00000020L
#define OBJ_CASE_INSENSITIVE 0x00000040L
#define OBJ_OPENIF 0x00000080L
#define OBJ_OPENLINK 0x00000100L
#define OBJ_KERNEL_HANDLE 0x00000200L
#define OBJ_VALID_ATTRIBUTES 0x000003F2L

typedef struct _UNICODE_STRING {
USHORT Length;
USHORT MaximumLength;

#ifdef MIDL_PASS
[size_is(MaximumLength / 2), length_is((Length) / 2) ] USHORT * Buffer;
#else // MIDL_PASS
PWSTR Buffer;
#endif // MIDL_PASS
} UNICODE_STRING;

typedef UNICODE_STRING *PUNICODE_STRING;
typedef const UNICODE_STRING *PCUNICODE_STRING;
#define UNICODE_NULL ((WCHAR)0) // winnt

typedef struct _OBJECT_ATTRIBUTES {
ULONG Length;
HANDLE RootDirectory;
PUNICODE_STRING ObjectName;
ULONG Attributes;
PVOID SecurityDescriptor; // Points to type SECURITY_DESCRIPTOR
PVOID SecurityQualityOfService; // Points to type SECURITY_QUALITY_OF_SERVICE
} OBJECT_ATTRIBUTES;

typedef OBJECT_ATTRIBUTES *POBJECT_ATTRIBUTES;

#define InitializeObjectAttributes( p, n, a, r, s ) {
(p)->Length = sizeof( OBJECT_ATTRIBUTES );
(p)->RootDirectory = r;
(p)->Attributes = a;
(p)->ObjectName = n;
(p)->SecurityDescriptor = s;
(p)->SecurityQualityOfService = NULL;
}

extern "C"
typedef VOID (*pRtlInitUnicodeString)( PUNICODE_STRING DestinationString,PCWSTR SourceString);

extern "C"
typedef NTSTATUS (*pZwOpenSection)(OUT PHANDLE SectionHandle,IN ACCESS_MASK DesiredAccess,IN POBJECT_ATTRIBUTES ObjectAttributes);

extern "C"
typedef NTSTATUS (*pZwClose)(IN HANDLE Handle);

static const HINSTANCE NTDLLHANDLE=(HINSTANCE)0x7c920000; //ntdll.dll加载的位置可以用GetModuleHandle获取