sl@0: // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of the License "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // e32\nkernsmp\arm\nk_entry.cia
sl@0: // 
sl@0: //
sl@0: 
sl@0: #include <e32cia.h>
sl@0: #include <arm.h>
sl@0: #include "nk_priv.h"
sl@0: 
sl@0: #include "entry.h"
sl@0: 
sl@0: #ifndef	EKA2_ENTRY_POINT_VERSION_IDENTIFIER
sl@0: #define	EKA2_ENTRY_POINT_VERSION_IDENTIFIER	\
sl@0: 	asm("tst pc, #%a0" : : "i" ((TInt)0) )
sl@0: #endif
sl@0: 
sl@0: extern "C" {
sl@0: 
sl@0: extern void HwInit0();
sl@0: extern void KernelMain();
sl@0: extern TLinAddr RomHeaderAddress;
sl@0: extern TLinAddr SuperPageAddress;
sl@0: 
sl@0: /*
sl@0:  * The main startup program
sl@0:  * aRomHeader is address of ROM header passed in by bootstrap
sl@0:  * aSuperPage is address of super page passed in by bootstrap
sl@0:  *
sl@0:  * *** NOTE ***
sl@0:  * This is written in assembler in order that nk_exe.lib can be built entirely
sl@0:  * from one source file. This is necessary to ensure that the vector table above
sl@0:  * appears at the very beginning of the ekern.exe code section.
sl@0:  * ************
sl@0:  */
sl@0: #if defined(__GCC32__)
sl@0: GLDEF_C __NAKED__ void _E32Startup(TLinAddr /*aRomHeader*/, TLinAddr /*aSuperPage*/)
sl@0: 	{
sl@0: 	EKA2_ENTRY_POINT_VERSION_IDENTIFIER;	// DUMMY INSTRUCTION TO INDICATE EKA2 ENTRY POINT
sl@0: 	asm("ldr r2, __RomHeaderAddress ");
sl@0: 	asm("b 1f ");				// branch over space for unique ID
sl@0: 
sl@0: 	asm(".word 0 ");			// loader will replace with code seg unique ID
sl@0: 								// for RAM-loaded code segment
sl@0: 								// MUST BE AT OFFSET 12 FROM ENTRY POINT
sl@0: 
sl@0: 	asm("1: ");
sl@0: 	asm("ldr r3, __SuperPage ");
sl@0: 	asm("str r0, [r2] ");
sl@0: 	asm("str r1, [r3] ");
sl@0: 
sl@0: #ifdef	__CPU_HAS_CP15_THREAD_ID_REG
sl@0: 	asm("mov	r0, #0 ");
sl@0: 	SET_RWNO_TID(,r0);			// initialise SubScheduler() pointer to 0
sl@0: 	SET_RWRO_TID(,r0);
sl@0: 	SET_RWRW_TID(,r0);
sl@0: #endif
sl@0: 
sl@0: 	asm("bl HwInit0 ");
sl@0: 
sl@0: 	asm("ldr r4, __CtorList ");
sl@0: 	
sl@0: 	asm("1: ");
sl@0: 	asm("ldr r0, [r4, #4]! ");
sl@0: 	asm("adr lr, 1b ");
sl@0: 	asm("cmp r0, #0 ");
sl@0: 	asm("mrs r1, cpsr ");
sl@0: 	ASM_DEBUG2(GlobalCtor,r0,r1);
sl@0: 	__JUMP(ne,r0);
sl@0: 
sl@0: 	asm("b KernelMain ");
sl@0: 
sl@0: 	asm("__RomHeaderAddress: ");
sl@0: 	asm(".word RomHeaderAddress ");
sl@0: 	asm("__SuperPage: ");
sl@0: 	asm(".word SuperPageAddress ");
sl@0: 	asm("__CtorList: ");
sl@0: 	asm(".word __CTOR_LIST__ ");
sl@0: 	}
sl@0: #elif defined(__ARMCC__)
sl@0: void __DLL_Export_Table__(void);
sl@0: void __cpp_initialize__aeabi_();
sl@0:   
sl@0: // The compiler generates calls to this when it reckons a top-level construction
sl@0: // needs destruction. But the kernel never will need this so, define it as a nop
sl@0: void __record_needed_destruction (void * d){}
sl@0: // 2.1 calls __aeabi_atexit passing __dso_handle. This can be a dummy (i.e. just a label)
sl@0: 
sl@0: __asm void __dso_handle(void) {}
sl@0: void __aeabi_atexit(void *object, void (*dtor)(void *), void *handle){}
sl@0: 
sl@0: void _E32Startup_Body(TLinAddr aRomHeader, TLinAddr aSuperPage);
sl@0: 
sl@0: __NAKED__ void _E32Startup(TLinAddr aRomHeader, TLinAddr aSuperPage)
sl@0: 	{
sl@0: 	EKA2_ENTRY_POINT_VERSION_IDENTIFIER;	// DUMMY INSTRUCTION TO INDICATE EKA2 ENTRY POINT
sl@0: 	asm("b		1f ");
sl@0: 	asm(".word	0 ");			// padding
sl@0: 
sl@0: 	asm(".word	0 ");			// loader will replace with code seg unique ID
sl@0: 								// for RAM-loaded code segment
sl@0: 								// MUST BE AT OFFSET 12 FROM ENTRY POINT
sl@0: 	asm("1:		");
sl@0: #ifdef	__CPU_HAS_CP15_THREAD_ID_REG
sl@0: 	asm("mov	r12, #0 ");
sl@0: 	SET_RWNO_TID(,r12);			// initialise SubScheduler() pointer to 0
sl@0: 	SET_RWRO_TID(,r12);
sl@0: 	SET_RWRW_TID(,r12);
sl@0: #endif
sl@0: 	asm("mov	r12, #0 ");
sl@0: 	SET_RWNO_TID(,r12);			// initialise SubScheduler() pointer to 0
sl@0: 	asm("b		_E32Startup_Body ");
sl@0: 
sl@0: 	}
sl@0: 
sl@0: GLDEF_C void _E32Startup_Body(TLinAddr aRomHeader, TLinAddr aSuperPage)
sl@0: 	{
sl@0: 	RomHeaderAddress = aRomHeader;
sl@0: 	SuperPageAddress = aSuperPage;
sl@0: 	HwInit0();
sl@0: 
sl@0: 	// RVCT specific initialization
sl@0: 
sl@0: 	// Make sure we get an export table
sl@0: 	__DLL_Export_Table__();
sl@0: 
sl@0: 	// Initialise static data
sl@0: 	__cpp_initialize__aeabi_();
sl@0: 
sl@0: 	KernelMain();
sl@0: 	}
sl@0: #else
sl@0: #error Not supported
sl@0: #endif
sl@0: 
sl@0: }
sl@0: