// 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\nkern\x86\ncutils.cia

 // 

 //

 #include <x86.h>

 EXPORT_C __NAKED__ TUint64 X86::Timestamp()

 	{

 	asm("rdtsc");

 	asm("ret");

 	}

 extern "C" __NAKED__ void NKIdle(TInt)

 	{

 	asm("hlt");

 	asm("ret");

 	}

 __NAKED__ void InitFpu()

 	{

 	asm("mov eax, cr0");

 	asm("and al, 0xf7");	// enable access to FPU

 	asm("mov cr0, eax");

 	asm("fninit");

 	asm("lea ecx, %a0": : "i"(DefaultCoprocessorState));

 	asm("fwait");

 	asm("fnsave [ecx]");	// save clean coprocessor state

 	asm("fwait");

 	asm("or al, 8");

 	asm("mov cr0, eax");	// disable access to coprocessor

 	asm("ret");

 	}

 const TLinAddr addressof_CrashState = (TLinAddr)&::CrashState;

 const TLinAddr addressof_X86_Regs = (TLinAddr)&::X86_Regs;

 const TLinAddr addressof_X86_IrqNestCount = (TLinAddr)&::X86_IrqNestCount;

 /** @internalTechnology

 	Called to indicate that the system has crashed and all CPUs should be

 	halted and should dump their registers.

 	Doesn't return

 */

 __NAKED__ void NKern::NotifyCrash(const TAny* /*a0*/, TInt /*a1*/)

 	{

 	asm("pushfd ");

 	asm("cli ");

 	asm("push ebp ");

 	asm("mov ebp, %0" : : "i" (addressof_CrashState));

 	asm("mov dword ptr [ebp], 1 ");

 	asm("mov ebp, %0" : : "i" (addressof_X86_Regs));

 	asm("mov [ebp+%0], eax" : : "i" _FOFF(SFullX86RegSet,iEax));

 	asm("mov [ebp+%0], ebx" : : "i" _FOFF(SFullX86RegSet,iEbx));

 	asm("mov [ebp+%0], ecx" : : "i" _FOFF(SFullX86RegSet,iEcx));

 	asm("mov [ebp+%0], edx" : : "i" _FOFF(SFullX86RegSet,iEdx));

 	asm("mov [ebp+%0], esi" : : "i" _FOFF(SFullX86RegSet,iEsi));

 	asm("mov [ebp+%0], edi" : : "i" _FOFF(SFullX86RegSet,iEdi));

 	asm("pop dword ptr [ebp+%0]" : : "i" _FOFF(SFullX86RegSet,iEbp));			// pushed EBP

 	asm("pop dword ptr [ebp+%0]" : : "i" _FOFF(SFullX86RegSet,iEflags));		// pushed EFLAGS

 	asm("pop dword ptr [ebp+%0]" : : "i" _FOFF(SFullX86RegSet,iEip));			// return address

 	asm("pop dword ptr [ebp+%0]" : : "i" _FOFF(SFullX86RegSet,iFaultCategory));	// a0 parameter

 	asm("pop dword ptr [ebp+%0]" : : "i" _FOFF(SFullX86RegSet,iFaultReason));	// a1 parameter

 	asm("mov [ebp+%0], esp" : : "i" _FOFF(SFullX86RegSet,iEsp));

 	asm("lea eax, [ebp+%0]" : : "i" _FOFF(SFullX86RegSet,iCs));

 	asm("mov [eax], cs ");

 	asm("mov [eax+4], ds ");

 	asm("mov [eax+8], es ");

 	asm("mov [eax+12], fs ");

 	asm("mov [eax+16], gs ");

 	asm("mov [eax+20], ss ");

 	asm("mov ebx, %0" : : "i" (addressof_X86_IrqNestCount));

 	asm("mov eax, 0x80000000 ");

 	asm("lock xchg eax, [ebx] ");

 	asm("mov [ebp+%0], eax" : : "i" _FOFF(SFullX86RegSet,iIrqNestCount));

 	asm("xor eax, eax ");

 	asm("push eax ");

 	asm("push eax ");

 	asm("push eax ");

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

 	asm("pop eax ");

 	asm("pop eax ");

 	asm("pop eax ");

 	asm("push dword ptr [ebp+%0]" : : "i" _FOFF(SFullX86RegSet,iFaultReason));		// a1 parameter

 	asm("push dword ptr [ebp+%0]" : : "i" _FOFF(SFullX86RegSet,iFaultCategory));	// a0 parameter

 	asm("push 1 ");

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

 	asm("int 0xff ");	// shouldn't get here

 	}