// Copyright (c) 2008-2009 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 "ARM EABI LICENCE.txt"

// which accompanies this distribution, and is available

// in kernel/eka/compsupp.

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

// This file is part of usrt.lib (but not ksrt.lib).

// 

//

extern "C" {

typedef void (DTOR)(void *);

struct dtd 

{ 

    void * obj;

    DTOR * dtor; 

};

#define MAX_DTOR_RECORDS 256

dtd dtor_rec[MAX_DTOR_RECORDS];

typedef dtd** dso_handle;

dtd * __dso_handle = &dtor_rec[MAX_DTOR_RECORDS];

// This is called by compiler generated code to record needed destructions of

// dynamically initialized (ctor) top level (BSS) data. 

// I guess this is more efficient for the compiler than __cxa_atexit, since 

// it takes the object that needs dtoring as its first arg, which means its in

// the right register when the ctor returns.

void __aeabi_atexit(void *aObject, void (*aDtor)(void *), dso_handle aHandle)

    {

    dtd * drec = *aHandle;

    drec--;

    if (drec < &dtor_rec[0])

        return; // Need to decide what to do here

    drec->dtor = aDtor;

    drec->obj  = aObject;

    *aHandle = drec;

    }

int __cxa_atexit( void (*aDtor)(void *), void *aObject, dso_handle aHandle )

    {

    __aeabi_atexit(aObject, aDtor, aHandle);

    // This is what the C++ GABI spec says to do!!

    if (*aHandle < &dtor_rec[0]) 

        return -1;

    return 0;

    }

void __cxa_finalize(dso_handle d)

    {

    dtd * drec = * d;

    dtd * lim  = &dtor_rec[MAX_DTOR_RECORDS];

    while (drec < lim) 

        {

        drec->dtor(drec->obj);

        drec++;

        }

    *d = drec;

    }

void run_static_dtors()

    {

    __cxa_finalize(&__dso_handle);

    }

} // extern "C"