// Copyright (c) 2007-2009 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\x86\uc_exe.cia

// 

//

#include <u32std.h>

#include "x86hlp.inl"

static const TLinAddr User_HandleException = (TLinAddr)&User::HandleException;

static const TLinAddr User_Invariant = (TLinAddr)&User::Invariant;

extern "C" {

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

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

__NAKED__ TInt _E32Startup()

	{

	// Process entry point

	// EBX = entry reason

	// ESP points to information block

	BYTE(0xeb)			// JMP .+16

	BYTE(0x0e)

	BYTE(0x00)

	BYTE(0x00)

	BYTE(0x00)

	BYTE(0x00)

	BYTE(0x00)

	BYTE(0x00)

	BYTE(0x00)

	BYTE(0x00)

	BYTE(0x00)

	BYTE(0x00)

	BYTE(0x00)			// need zero word at offset 12 from entry point

	BYTE(0x00)

	BYTE(0x00)

	BYTE(0x00)

	asm("cmp ebx, 2");

	asm("jae not_thread_entry");

	asm("mov ecx, ebx");

	asm("mov edx, esp");

	asm("jmp %a0": :"i"(&RunThread));

	asm("not_thread_entry:");

	asm("cmp ebx, 4");

	asm("jne invalid_entry");

	asm("mov eax, esp");

	asm("push eax");

	asm("mov eax, %0": : "i"(User_HandleException));

	asm("call eax");

	asm("pop eax");	// parameter

	asm("pop eax");	// exc type

	asm("pop eax");	// exc id

	asm("pop eax");	// exc error code

	asm("pop eax");	// fault address

	asm("pop eax");

	asm("pop ecx");

	asm("pop edx");

	asm("pop ebx");

	asm("pop esi");	// ESP - ignore

	asm("pop ebp");

	asm("pop esi");

	asm("pop edi");

	asm("add esp, 4");	// SS - ignore

	asm("pop ds");

	asm("pop es");

	asm("pop fs");

	asm("pop gs");

	asm("popfd");

	BYTE(0xcb) //asm("retf"); GCC doesn't recognise retf

	asm("invalid_entry:");

	asm("call %a0": : "i"(User_Invariant));

	}

}