// 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 "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\nkern\arm\nk_entry.cia

 // 

 //

 #include <e32cia.h>

 #include <arm.h>

 #include "nk_priv.h"

 #include "entry.h"

 #ifndef	EKA2_ENTRY_POINT_VERSION_IDENTIFIER

 #define	EKA2_ENTRY_POINT_VERSION_IDENTIFIER	\

 	asm("tst pc, #%a0" : : "i" ((TInt)0) )

 #endif

 extern "C" {

 extern void HwInit0();

 extern void KernelMain();

 extern TLinAddr RomHeaderAddress;

 extern TLinAddr SuperPageAddress;

 /*

  * The main startup program

  * aRomHeader is address of ROM header passed in by bootstrap

  * aSuperPage is address of super page passed in by bootstrap

  *

  * *** NOTE ***

  * This is written in assembler in order that nk_exe.lib can be built entirely

  * from one source file. This is necessary to ensure that the vector table above

  * appears at the very beginning of the ekern.exe code section.

  * ************

  */

 #if defined(__GCC32__)

 GLDEF_C __NAKED__ void _E32Startup(TLinAddr /*aRomHeader*/, TLinAddr /*aSuperPage*/)

 	{

 	EKA2_ENTRY_POINT_VERSION_IDENTIFIER;	// DUMMY INSTRUCTION TO INDICATE EKA2 ENTRY POINT

 	asm("ldr r2, __RomHeaderAddress ");

 	asm("b 1f ");				// branch over space for unique ID

 	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("ldr r3, __SuperPage ");

 	asm("str r0, [r2] ");

 	asm("str r1, [r3] ");

 	asm("bl HwInit0 ");

 	asm("ldr r4, __CtorList ");

 	asm("1: ");

 	asm("ldr r0, [r4, #4]! ");

 	asm("adr lr, 1b ");

 	asm("cmp r0, #0 ");

 	__JUMP(ne,r0);

 	asm("b KernelMain ");

 	asm("__RomHeaderAddress: ");

 	asm(".word RomHeaderAddress ");

 	asm("__SuperPage: ");

 	asm(".word SuperPageAddress ");

 	asm("__CtorList: ");

 	asm(".word __CTOR_LIST__ ");

 	}

 #elif defined(__ARMCC__)

 void __DLL_Export_Table__(void);

 void __cpp_initialize__aeabi_();

 // The compiler generates calls to this when it reckons a top-level construction

 // needs destruction. But the kernel never will need this so, define it as a nop

 void __record_needed_destruction (void * d){}

 // 2.1 calls __aeabi_atexit passing __dso_handle. This can be a dummy (i.e. just a label)

 __asm void __dso_handle(void) {}

 void __aeabi_atexit(void *object, void (*dtor)(void *), void *handle){}

 void _E32Startup_Body(TLinAddr aRomHeader, TLinAddr aSuperPage);

 __NAKED__ void _E32Startup(TLinAddr aRomHeader, TLinAddr aSuperPage)

 	{

 	EKA2_ENTRY_POINT_VERSION_IDENTIFIER;	// DUMMY INSTRUCTION TO INDICATE EKA2 ENTRY POINT

 	asm("b _E32Startup_Body ");

 	asm(".word 0 ");			// padding

 	asm(".word 0 ");			// loader will replace with code seg unique ID

 								// for RAM-loaded code segment

 								// MUST BE AT OFFSET 12 FROM ENTRY POINT

 	}

 GLDEF_C void _E32Startup_Body(TLinAddr aRomHeader, TLinAddr aSuperPage)

 	{

 	RomHeaderAddress = aRomHeader;

 	SuperPageAddress = aSuperPage;

 	HwInit0();

 	// RVCT specific initialization

 	// Make sure we get an export table

 	__DLL_Export_Table__();

 	// Initialise static data

 	__cpp_initialize__aeabi_();

 	KernelMain();

 	}

 #else

 #error Not supported

 #endif

 }