// 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\euser\epoc\arm\uc_exe.cia

 // 

 //

 #include <e32cia.h>

 #include <u32std.h>

 // Include this to get imports from User (i.e. User::Invariant and User::HandleException). 

 // This sets VISIBILITY to DEFAULT for BPABI builds.

 #include <e32std.h>

 extern "C" {

 void _xxxx_call_user_invariant();

 void _xxxx_call_user_handle_exception(void *);

 extern void RunThread(TBool aNotFirst, SThreadCreateInfo& aInfo);

 // NOTE: This MUST be the first function in this module

 __NAKED__ TInt _E32Startup()

 	{

 	// Process entry point

 	// R4 = entry reason

 	// SP points to information block

 	EKA2_ENTRY_POINT_VERSION_IDENTIFIER;	// DUMMY INSTRUCTION TO INDICATE EKA2 ENTRY POINT

 	asm("cmp r4, #%a0" : : "i" ((TInt)KModuleEntryReasonThreadInit) );

 	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("movls r0, r4 ");		// r0 = aNotFirst

 	asm("movls r1, sp ");		// r1 -> parameter block

 	asm("bls RunThread ");		// process or thread init

 	asm("cmp r4, #%a0" : : "i" ((TInt)KModuleEntryReasonException) );

 //  	asm("bne " CSM_ZN4User9InvariantEv );	// invalid entry reason

   	asm("bne _xxxx_call_user_invariant " );	// invalid entry reason

 	// exception entry

 	// NOTE: THUMB only works on ARMv5 and above

 	asm("mov r0, sp ");			// r0->parameter block

 	asm("ldr r4, [sp, #16]");	// r4 = saved CPSR

 	asm("tst r4, #0x20 ");		// test for THUMB

 	asm("ldrne r1, [sp, #80] ");	// r1 = saved return addr

 	asm("orrne r1, r1, #1 ");

 	asm("strne r1, [sp, #80] ");	// if THUMB, set bit 0 of return addr

 	asm("mov r11, sp ");		// save stack pointer

 	// The frame starts 84 bytes (up) from r11 i.e. CFA is r11 + 84

 	__EH_FRAME_ADDRESS(r11, 84)

 	// we can only restore callee-save values, but that's what we want if we 'leave'

 	// saved link is -8 bytes from CFA (= r11 + 0x24 + 0x20 + 0x8)

 	__EH_FRAME_SAVE1(lr, -8)

 	// the other callee saves start at -48 from CFA (= r11 + 0x24)

 #if 0

 	// would like to say this 

 	__EH_FRAME_SAVE1(r4-r11, -48)

 	// but the macro expansion gives rise to odd code so we do what follows

 #endif

 #ifdef __ARMCC__

 	FRAME SAVE {r4-r11}, -48

 #endif

 	asm("bic sp, sp, #4 ");		// align stack to 8 byte boundary

 //  	asm("bl " CSM_ZN4User15HandleExceptionEPv );

   	asm("bl _xxxx_call_user_handle_exception ");

 	asm("add sp, r11, #16 ");	// skip exc type, exc code, FAR, FSR

 	asm("ldr r4, [sp], #4 ");	// r4 = saved CPSR

 	asm("bic r4, r4, #0x20 ");	// clear THUMB bit

 	asm("msr cpsr, r4 ");		// restore flags

 	asm("ldmia sp, {r0-r15} ");	// restore r0-r15

 #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|

 #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

 #endif

 	}

 void _xxxx_call_user_invariant() { User::Invariant(); }

 void _xxxx_call_user_handle_exception(void * arg) { User::HandleException(arg); }

 }