// Copyright (c) 1997-2009 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:

//

#include <arm_mem.h>

#include "execs.h"

__NAKED__ TUint32 TTCR()

	{

	asm("mrc p15, 0, r0, c2, c0, 2 ");

	asm("and r0, r0, #7 ");	// only bottom 3 bits are defined

	__JUMP(,lr);

	}

__NAKED__ TUint32 CPUID(TInt /*aRegNum*/)

	{

	asm("movs r1, r0");

	asm("mrcmi p15, 0, r0, c0, c0, 0 "); // for -ve reg, return old CPUID register

	asm("mrceq p15, 0, r0, c0, c1, 0 ");

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

	asm("mrceq p15, 0, r0, c0, c1, 1 ");

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

	asm("mrceq p15, 0, r0, c0, c1, 2 ");

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

	asm("mrceq p15, 0, r0, c0, c1, 3 ");

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

	asm("mrceq p15, 0, r0, c0, c1, 4 ");

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

	asm("mrceq p15, 0, r0, c0, c1, 5 ");

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

	asm("mrceq p15, 0, r0, c0, c1, 6 ");

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

	asm("mrceq p15, 0, r0, c0, c1, 7 ");

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

	asm("mrceq p15, 0, r0, c0, c2, 0 ");

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

	asm("mrceq p15, 0, r0, c0, c2, 1 ");

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

	asm("mrceq p15, 0, r0, c0, c2, 2 ");

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

	asm("mrceq p15, 0, r0, c0, c2, 3 ");

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

	asm("mrceq p15, 0, r0, c0, c2, 4 ");

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

	asm("mrceq p15, 0, r0, c0, c2, 5 ");

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

	asm("mrceq p15, 0, r0, c0, c2, 6 ");

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

	asm("mrceq p15, 0, r0, c0, c2, 7 ");

	__JUMP(,lr);

	}

__NAKED__ void UnlockIPCAlias()

	{

	asm("mrc p15, 0, r0, c3, c0, 0 ");

	asm("orr r0, r0, #%a0 " : : "i" (1 << (2*KIPCAliasDomain)));	// Allow client access to Alias mappings

	asm("mcr p15, 0, r0, c3, c0, 0 ");

	__INST_SYNC_BARRIER_Z__(r0);

	__JUMP(,lr);

	}

__NAKED__ void LockIPCAlias()

	{

	asm("mrc p15, 0, r0, c3, c0, 0 ");

	asm("bic r0, r0, #%a0 " : : "i" (3 << (2*KIPCAliasDomain)));	// Prevent access to Alias mappings

	asm("mcr p15, 0, r0, c3, c0, 0 ");

	__INST_SYNC_BARRIER_Z__(r0);

	__JUMP(,lr);

	}

__NAKED__ void M::LockUserMemory()

	{

	USER_MEMORY_GUARD_ON(,r0,r0);		// Prevent access to User mappings in domain 15

	__JUMP(,lr);

	}

__NAKED__ void M::UnlockUserMemory()

	{

	USER_MEMORY_GUARD_OFF(,r0,r0);		// Allow access to User mappings in domain 15

	__JUMP(,lr);

	}

__NAKED__ void UserWriteFault(TLinAddr /*aAddr*/)

	{

	asm("strbt r1,[r0]");

	__JUMP(,lr);

	}

__NAKED__ void UserReadFault(TLinAddr  /*aAddr*/)

	{	

	asm("ldrbt r1,[r0]");

	__JUMP(,lr);

	}

extern "C" __NAKED__ void __e32_instruction_barrier()

	{

	__INST_SYNC_BARRIER_Z__(r0);

	__JUMP(,lr);

	}