// Copyright (c) 2005-2009 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\drivers\trace\arm\btracex.cia
// 
//

#include <e32cia.h>
#include <kernel/kern_priv.h>
#include "drivers/btrace.h"
#ifndef __SMP__
#include "highrestimer.h"
#endif

#ifdef BTRACE_DRIVER_MACHINE_CODED

#ifndef HAS_HIGH_RES_TIMER
//#undef BTRACE_INCLUDE_TIMESTAMPS
#endif

__NAKED__ TBool TBTraceBufferK::TraceWithTimestamp2(TUint32 aHeader,TUint32 aHeader2,TUint32 aContext,TUint32 a1,TUint32 a2,TUint32 a3,TUint32 aExtra,TUint32 aPc)
	{
#ifdef BTRACE_INCLUDE_TIMESTAMPS
#define USE_TIMESTAMP2 
#include "btracex_impl.cia"
#undef USE_TIMESTAMP2
#endif // If compiling without timestamp support this function falls through to the normal Trace()...
	}

__NAKED__ TBool TBTraceBufferK::Trace(TUint32 aHeader,TUint32 aHeader2,TUint32 aContext,TUint32 a1,TUint32 a2,TUint32 a3,TUint32 aExtra,TUint32 aPc)
	{
#include "btracex_impl.cia"

	asm("trace_dropped: ");		// get here with r5 = &user_buffer
	asm("mov	r0, #0 ");
	asm("str	r0, [r10, #%a0]" : : "i" _FOFF(TBTraceBufferK,iRequestDataSize));

	asm("trace_off:");			// get here with r5 = &user_buffer
	asm("ldr	r7, [r5, #%a0]" : : "i" _FOFF(TBTraceBuffer,iGeneration));
	asm("str	r10, [r10,#%a0]" : : "i" _FOFF(TBTraceBufferK,iDropped));	// flag we dropped a trace
#ifdef __SMP__
	__DATA_MEMORY_BARRIER_Z__(r8);		// make sure head pointer update seen before generation update
#endif
	asm("add	r7, r7, #1 ");
	asm("str	r7, [r5, #%a0]" : : "i" _FOFF(TBTraceBuffer,iGeneration));	// make sure iGeneration doesn't go out of sync

	asm("done:");
	asm("add	sp, sp, #16 ");			// drop args
	asm("ldmfd	sp!, {r4-r12,lr} ");
	asm("mov	r0, #1 ");				// return TRUE
#ifndef __SMP__
	asm("msr	cpsr_c, r12 ");			// restore interrupts
#endif
	__JUMP(,lr);

	asm("__Buffer: ");
	asm(".word Buffer ");
	asm("__03020100: ");
	asm(".word 0x03020100 ");
	asm("__04040404: ");
	asm(".word 0x04040404 ");
	}




#endif // BTRACE_DRIVER_MACHINE_CODED