/*

* Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

#include <emulator.h>

extern "C" {

#include "cryptography_stubs.h"

FARPROC vector[MAX_ORDINAL+1];

void fill_vector(HINSTANCE aDll)

	{

	int i;

	for (i=1;i<=MAX_ORDINAL;i++)

		{

		vector[i] = GetProcAddress(aDll, (LPCSTR)i);

		}

	vector[0] = (FARPROC)1;		// initialised

	}

void init_vector()

	{

	__LOCK_HOST;		// prevent deadlock with EKA2 scheduler

	HINSTANCE instance;

	// Try for strong cryptography

	//

	instance = LoadLibraryA("strong_cryptography.dll"); 

	if (instance != NULL)

		{

		fill_vector(instance);

		return;

		}

	// Try for weak cryptography

	//

	instance = LoadLibraryA("weak_cryptography.dll"); 

	if (instance != NULL)

		{

		fill_vector(instance);

		return;

		}

	// die

	//

	OutputDebugStringA("Unable to load cryptography implementation");

	_asm int 3;

	}

__declspec(naked) void common_dispatch()

	{

	_asm cmp	dword ptr vector,0		// initialised?

	_asm jne  	call_though_vector

	_asm push	eax

	_asm push	ecx

	_asm push	edx

	_asm call	init_vector

	_asm pop	edx

	_asm pop 	ecx

	_asm pop 	eax

call_though_vector:

	_asm jmp	[vector+eax*4]

	}

}