sl@0: /*
sl@0: * Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of the License "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description: 
sl@0: *
sl@0: */
sl@0: 
sl@0: 
sl@0: #include <emulator.h>
sl@0: 
sl@0: 
sl@0: extern "C" {
sl@0: 
sl@0: #include "cryptography_stubs.h"
sl@0: 
sl@0: FARPROC vector[MAX_ORDINAL+1];
sl@0: 
sl@0: void fill_vector(HINSTANCE aDll)
sl@0: 	{
sl@0: 	int i;
sl@0: 	for (i=1;i<=MAX_ORDINAL;i++)
sl@0: 		{
sl@0: 		vector[i] = GetProcAddress(aDll, (LPCSTR)i);
sl@0: 		}
sl@0: 	vector[0] = (FARPROC)1;		// initialised
sl@0: 	}
sl@0: 
sl@0: void init_vector()
sl@0: 	{
sl@0: 	__LOCK_HOST;		// prevent deadlock with EKA2 scheduler
sl@0: 
sl@0: 	HINSTANCE instance;
sl@0: 	
sl@0: 	// Try for strong cryptography
sl@0: 	//
sl@0: 	instance = LoadLibraryA("strong_cryptography.dll"); 
sl@0: 	if (instance != NULL)
sl@0: 		{
sl@0: 		fill_vector(instance);
sl@0: 		return;
sl@0: 		}
sl@0: 		
sl@0: 	// Try for weak cryptography
sl@0: 	//
sl@0: 	instance = LoadLibraryA("weak_cryptography.dll"); 
sl@0: 	if (instance != NULL)
sl@0: 		{
sl@0: 		fill_vector(instance);
sl@0: 		return;
sl@0: 		}
sl@0: 	
sl@0: 	// die
sl@0: 	//
sl@0: 	OutputDebugStringA("Unable to load cryptography implementation");
sl@0: 	_asm int 3;
sl@0: 	}
sl@0: 	
sl@0: __declspec(naked) void common_dispatch()
sl@0: 	{
sl@0: 	_asm cmp	dword ptr vector,0		// initialised?
sl@0: 	_asm jne  	call_though_vector
sl@0: 	_asm push	eax
sl@0: 	_asm push	ecx
sl@0: 	_asm push	edx
sl@0: 	_asm call	init_vector
sl@0: 	_asm pop	edx
sl@0: 	_asm pop 	ecx
sl@0: 	_asm pop 	eax
sl@0: call_though_vector:
sl@0: 	_asm jmp	[vector+eax*4]
sl@0: 	}
sl@0: 
sl@0: }