// Copyright (c) 2003-2009 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\euser\epoc\arm\uc_dll.cia
// 
//

#include <e32cia.h>
#include <u32std.h>

extern "C" {

extern TInt _E32Dll_Body(TInt);

__NAKED__ TInt _E32Dll(TInt /*aReason*/)
	{
	// DLL entry point
	EKA2_ENTRY_POINT_VERSION_IDENTIFIER;	// DUMMY INSTRUCTION TO INDICATE EKA2 ENTRY POINT
	asm("ldr r12, 1f ");
	__JUMP(,r12);

	asm(".word 0 ");			// loader will replace with code seg unique ID
								// for RAM-loaded code segment
								// MUST BE AT OFFSET 12 FROM ENTRY POINT

	asm("1: ");
	asm(".word _E32Dll_Body ");

#ifdef __ARMCC__
#ifdef __SUPPORT_CPP_EXCEPTIONS__


  /* It is possible no functions included in the image require
   * a handler table. Therefore make only a weak reference to
   * the handler table base symbol, which may be absent.
   */
  extern |.ARM.exidx$$Base|;
  extern |.ARM.exidx$$Limit|;
  extern |.ARM.extab$$Base| [WEAK];
  extern |Image$$ER_RO$$Base|;
  extern |Image$$ER_RO$$Limit|;
  export |Symbian$$CPP$$Exception$$Descriptor|;

  /* Symbian$$CPP$$Exception$$Descriptor is referenced from the Image header.
   * A pointer to this object can be cached by the unwinder in the UCB
   * on the assumption that the EHT for the previous frame is likely to be right
   * for the current frame
   */

|Symbian$$CPP$$Exception$$Descriptor|
#ifdef __LEAVE_EQUALS_THROW__
|Symbian$$eit_base|  		dcd |.ARM.exidx$$Base|;   /* index table base */
|Symbian$$eit_limit|  		dcd |.ARM.exidx$$Limit| ;  /* index table limit */
#endif
#if __ARMCC_VERSION > 220000
|Symbian$$code_seg_base| 	dcd |Image$$ER_RO$$Base| + 1 ; /* RO segment base + mark as ehabi v2 */
|Symbian$$code_seg_limit| 	dcd |Image$$ER_RO$$Limit| ;/* RO segment limit */
|Symbian$$reserved|		dcd 0 ; /* reserved for future use */
#else
|Symbian$$code_seg_base| 	dcd |Image$$ER_RO$$Base| ; /* RO segment base */
|Symbian$$code_seg_limit| 	dcd |Image$$ER_RO$$Limit| ;/* RO segment limit */
#endif

#endif
#elif defined(__GCCE__)
#ifdef __SUPPORT_CPP_EXCEPTIONS__


  /* It is possible no functions included in the image require
   * a handler table. Therefore make only a weak reference to
   * the handler table base symbol, which may be absent.
   */
  asm(".weak .ARM.extab$$Base");
  asm(".global Symbian$$CPP$$Exception$$Descriptor");

  /* Symbian$$CPP$$Exception$$Descriptor is referenced from the Image header.
   * A pointer to this object can be cached by the unwinder in the UCB
   * on the assumption that the EHT for the previous frame is likely to be right
   * for the current frame
   */

  asm("Symbian$$CPP$$Exception$$Descriptor:");
#ifdef __LEAVE_EQUALS_THROW__
  asm(".word .ARM.exidx$$Base");   /* index table base */
  asm(".word .ARM.exidx$$Limit");  /* index table limit */
#endif
  asm(".word Image$$ER_RO$$Base + 1"); /* RO segment base + mark as ehabi v2 */
  asm(".word Image$$ER_RO$$Limit");    /* RO segment limit */
  asm(".word 0");                      /* reserved for future use */
#endif
#endif
	}
}

