// Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "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 "TraceCoreRegisterWriter.h"

/**

 * InterrupsDisabled

 * Check if interrupts IRQ/FIQ disabled

 * Return 0x08 if only IRQ disabled, 0x04 if only FIQ disabled, 0x0C if both disabled.

 * @return true if interrupt(s) disabled, otherwise 0 (false)

 */

/*EXPORT_C*/ __NAKED__ TUint32 DTraceCoreRegisterWriter::InterruptsDisabled() 

    {

    // save work regs

    asm( "stmfd sp!, {r2, r4}" );

    // check if interrupts disabled

    asm( "mrs r2,cpsr" );

    asm( "and r0,r2,#0xc0" ); // 0b11000000 IRQ disabled bit 7, FIQ disabled bit 6

    // restore work regs

    asm( "ldmfd sp!,{r2,r4}" );

    // move pc,lr

    asm( "bx lr" );

    }