123 lines
3.3 KiB
C++
123 lines
3.3 KiB
C++
|
/*++
|
||
|
|
|
||
|
|
Copyright (c) 1995 Microsoft Corporation
|
||
|
|
|
||
|
|
Module Name:
|
||
|
|
|
||
|
|
machine.cpp
|
||
|
|
|
||
|
|
Abstract:
|
||
|
|
|
||
|
|
This file implements the CreateMachApiThunk() function. This
|
||
|
|
function is responsible for emitting the individual API thunks
|
||
|
|
for the i386 architecture.
|
||
|
|
|
||
|
|
Author:
|
||
|
|
|
||
|
|
Wesley Witt (wesw) 28-June-1995
|
||
|
|
|
||
|
|
Environment:
|
||
|
|
|
||
|
|
User Mode
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
#include "apidllp.h"
|
||
|
|
#pragma hdrstop
|
||
|
|
|
||
|
|
PUCHAR
|
||
|
|
CreateMachApiThunk(
|
||
|
|
PULONG IatAddress,
|
||
|
|
PUCHAR Text,
|
||
|
|
PDLL_INFO DllInfo,
|
||
|
|
PAPI_INFO ApiInfo
|
||
|
|
)
|
||
|
|
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
Emits the machine specific code for the API thunks.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
IatAddress - Pointer to the IAT fir this API
|
||
|
|
Text - Pointer to a buffer to place the generated code
|
||
|
|
DllInfo - Pointer to the DLL_INFO structure
|
||
|
|
ApiInfo - Pointer to the API_INFO structure
|
||
|
|
|
||
|
|
Return Value:
|
||
|
|
|
||
|
|
Pointer to the next byte to place more generated code.
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
{
|
||
|
|
if (ApiInfo->ThunkAddress) {
|
||
|
|
*IatAddress = ApiInfo->ThunkAddress;
|
||
|
|
return Text;
|
||
|
|
}
|
||
|
|
|
||
|
|
*IatAddress = (ULONG)Text;
|
||
|
|
ApiInfo->ThunkAddress = *IatAddress;
|
||
|
|
PUCHAR Code = (PUCHAR)Text;
|
||
|
|
|
||
|
|
Code[0] = 0x68;
|
||
|
|
Code += 1;
|
||
|
|
*(LPDWORD)Code = (ULONG)ApiInfo;
|
||
|
|
Code += sizeof(DWORD);
|
||
|
|
Code[0] = 0x68;
|
||
|
|
Code += 1;
|
||
|
|
*(LPDWORD)Code = (ULONG)DllInfo;
|
||
|
|
Code += sizeof(DWORD);
|
||
|
|
Code[0] = 0x68;
|
||
|
|
Code += 1;
|
||
|
|
|
||
|
|
if (_stricmp(DllInfo->Name,KERNEL32)==0) {
|
||
|
|
if (strcmp((LPSTR)(ApiInfo->Name+(LPSTR)MemPtr),LOADLIBRARYA)==0) {
|
||
|
|
*(LPDWORD)Code = APITYPE_LOADLIBRARYA;
|
||
|
|
} else
|
||
|
|
if (strcmp((LPSTR)(ApiInfo->Name+(LPSTR)MemPtr),LOADLIBRARYW)==0) {
|
||
|
|
*(LPDWORD)Code = APITYPE_LOADLIBRARYW;
|
||
|
|
} else
|
||
|
|
if (strcmp((LPSTR)(ApiInfo->Name+(LPSTR)MemPtr),FREELIBRARY)==0) {
|
||
|
|
*(LPDWORD)Code = APITYPE_FREELIBRARY;
|
||
|
|
} else
|
||
|
|
if (strcmp((LPSTR)(ApiInfo->Name+(LPSTR)MemPtr),GETPROCADDRESS)==0) {
|
||
|
|
*(LPDWORD)Code = APITYPE_GETPROCADDRESS;
|
||
|
|
} else {
|
||
|
|
*(LPDWORD)Code = APITYPE_NORMAL;
|
||
|
|
}
|
||
|
|
} else if (_stricmp(DllInfo->Name,USER32)==0) {
|
||
|
|
if (strcmp((LPSTR)(ApiInfo->Name+(LPSTR)MemPtr),REGISTERCLASSA)==0) {
|
||
|
|
*(LPDWORD)Code = APITYPE_REGISTERCLASSA;
|
||
|
|
} else
|
||
|
|
if (strcmp((LPSTR)(ApiInfo->Name+(LPSTR)MemPtr),REGISTERCLASSW)==0) {
|
||
|
|
*(LPDWORD)Code = APITYPE_REGISTERCLASSW;
|
||
|
|
} else
|
||
|
|
if (strcmp((LPSTR)(ApiInfo->Name+(LPSTR)MemPtr),SETWINDOWLONGA)==0) {
|
||
|
|
*(LPDWORD)Code = APITYPE_SETWINDOWLONG;
|
||
|
|
} else
|
||
|
|
if (strcmp((LPSTR)(ApiInfo->Name+(LPSTR)MemPtr),SETWINDOWLONGW)==0) {
|
||
|
|
*(LPDWORD)Code = APITYPE_SETWINDOWLONG;
|
||
|
|
} else {
|
||
|
|
*(LPDWORD)Code = APITYPE_NORMAL;
|
||
|
|
}
|
||
|
|
} else if (_stricmp(DllInfo->Name,WNDPROCDLL)==0) {
|
||
|
|
*(LPDWORD)Code = APITYPE_WNDPROC;
|
||
|
|
} else {
|
||
|
|
*(LPDWORD)Code = APITYPE_NORMAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
Code += sizeof(DWORD);
|
||
|
|
|
||
|
|
Code[0] = 0xe9;
|
||
|
|
Code += 1;
|
||
|
|
*(LPDWORD)Code = (ULONG)((ULONG)ApiMonThunk-(((ULONG)Code-(ULONG)Text)+(ULONG)Text+4));
|
||
|
|
Code += sizeof(DWORD);
|
||
|
|
|
||
|
|
return Code;
|
||
|
|
}
|
||
|
|
|