--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kernel/eka/euser/epoc/x86/uc_exe.cia	Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,90 @@
+// 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));
+	}
+
+}
+
+