// Copyright (c) 1995-2009 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:

// e32\include\win32atx.h

// 

//

/**

 @file

 @internalComponent

*/

#ifndef __WIN32ATX_H__

#define __WIN32ATX_H__

#if defined(__VC32__)

#define	MAX_ATEXIT_HANDLERS	255

#ifdef __KERNEL_MODE__

#define PANIC()	Kern::Fault("ATEXIT", __LINE__)

#else

_LIT(KLitAtExitPanic,"ATEXIT");

#define PANIC()	User::Panic(KLitAtExitPanic, __LINE__)

#endif

extern "C" {

typedef void (__cdecl* TAtExit)(void);

static TUint sp=0;

static TAtExit handlers[MAX_ATEXIT_HANDLERS];

int atexit(TAtExit aFunc)

	{

	if (sp>=MAX_ATEXIT_HANDLERS)

		PANIC();

	handlers[sp++]=aFunc;

	return 0;

	}

void __call_atexit_handlers()

	{

	while(sp)

		(*handlers[--sp])();

	}

#pragma data_seg(".CRT$XPU")

TAtExit __xp_a[] = { __call_atexit_handlers };

}

#elif defined(__CW32__)

struct SDestructorEntry

	{

	SDestructorEntry* iNext;

	TAny* iDstrFn;

	TAny* iObj;

	};

SDestructorEntry* DEListHead;

extern "C" {

void* __register_global_object(void* obj, void* dfn, void* entry)

	{

	SDestructorEntry* e = (SDestructorEntry*)entry;

	e->iNext = DEListHead;

	e->iDstrFn = dfn;

	e->iObj = obj;

	DEListHead = e;

	return obj;

	}

__declspec(naked) void __destroy_global_chain(void)

	{

	_asm push ebp

	_asm mov ebp, esp

	_asm push ebx

	_asm lea ebx, DEListHead

	dgc1:

	_asm mov ebx, [ebx]

	_asm test ebx, ebx

	_asm jz dgc0

	_asm mov ecx, [ebx+8]

	_asm call dword ptr [ebx+4]

	_asm jmp dgc1

	dgc0:

	_asm lea ebx, DEListHead

	_asm mov [ebx], 0

	_asm pop ebx

	_asm mov esp, ebp

	_asm pop ebp

	_asm ret

	}

#pragma data_seg(".CRT$XPU")

void (*__xp_a[])(void) = { &__destroy_global_chain };

}

#elif defined(__GCC32__)

// todo: figure out what to do here

#else

#error Unknown X86 compiler

#endif

#endif