sl@0: // Copyright (c) 2007-2009 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\euser\epoc\x86\uc_exe.cia
sl@0: // 
sl@0: //
sl@0: 
sl@0: #include <u32std.h>
sl@0: #include "x86hlp.inl"
sl@0: 
sl@0: static const TLinAddr User_HandleException = (TLinAddr)&User::HandleException;
sl@0: static const TLinAddr User_Invariant = (TLinAddr)&User::Invariant;
sl@0: 
sl@0: extern "C" {
sl@0: void __fastcall RunThread(TBool aNotFirst, SThreadCreateInfo& aInfo);
sl@0: 
sl@0: // NOTE: This MUST be the first function in this module
sl@0: __NAKED__ TInt _E32Startup()
sl@0: 	{
sl@0: 	// Process entry point
sl@0: 	// EBX = entry reason
sl@0: 	// ESP points to information block
sl@0: 	BYTE(0xeb)			// JMP .+16
sl@0: 	BYTE(0x0e)
sl@0: 	BYTE(0x00)
sl@0: 	BYTE(0x00)
sl@0: 	BYTE(0x00)
sl@0: 	BYTE(0x00)
sl@0: 	BYTE(0x00)
sl@0: 	BYTE(0x00)
sl@0: 	BYTE(0x00)
sl@0: 	BYTE(0x00)
sl@0: 	BYTE(0x00)
sl@0: 	BYTE(0x00)
sl@0: 	BYTE(0x00)			// need zero word at offset 12 from entry point
sl@0: 	BYTE(0x00)
sl@0: 	BYTE(0x00)
sl@0: 	BYTE(0x00)
sl@0: 
sl@0: 	asm("cmp ebx, 2");
sl@0: 	asm("jae not_thread_entry");
sl@0: 	asm("mov ecx, ebx");
sl@0: 	asm("mov edx, esp");
sl@0: 	asm("jmp %a0": :"i"(&RunThread));
sl@0: 
sl@0: 	asm("not_thread_entry:");
sl@0: 	asm("cmp ebx, 4");
sl@0: 	asm("jne invalid_entry");
sl@0: 	asm("mov eax, esp");
sl@0: 	asm("push eax");
sl@0: 	asm("mov eax, %0": : "i"(User_HandleException));
sl@0: 	asm("call eax");
sl@0: 	asm("pop eax");	// parameter
sl@0: 	asm("pop eax");	// exc type
sl@0: 	asm("pop eax");	// exc id
sl@0: 	asm("pop eax");	// exc error code
sl@0: 	asm("pop eax");	// fault address
sl@0: 	asm("pop eax");
sl@0: 	asm("pop ecx");
sl@0: 	asm("pop edx");
sl@0: 	asm("pop ebx");
sl@0: 	asm("pop esi");	// ESP - ignore
sl@0: 	asm("pop ebp");
sl@0: 	asm("pop esi");
sl@0: 	asm("pop edi");
sl@0: 	asm("add esp, 4");	// SS - ignore
sl@0: 	asm("pop ds");
sl@0: 	asm("pop es");
sl@0: 	asm("pop fs");
sl@0: 	asm("pop gs");
sl@0: 	asm("popfd");
sl@0: 	BYTE(0xcb) //asm("retf"); GCC doesn't recognise retf
sl@0: 
sl@0: 	asm("invalid_entry:");
sl@0: 	asm("call %a0": : "i"(User_Invariant));
sl@0: 	}
sl@0: 
sl@0: }
sl@0: 
sl@0: