// Copyright (c) 1999-2009 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:
// e32test\realtime\d_latncy.cia
// 
//

#include <platform.h>

#if defined(__MEIG__)
#include <cl7211.h>
#elif defined(__MAWD__)
#include <windermere.h>
#elif defined(__MISA__)
#include <sa1100.h>
#elif defined(__MCOT__)
#include <cotulla.h>
#elif defined(__MI920__) || defined(__NI1136__)
#include <integratorap.h>
#elif defined(__RVEMUBOARD__)
#include <rvemuboard.h>
#endif

#include <kernel/kern_priv.h>		//temporary
#include "d_latncy.h"

#if !defined(__SMP__)
#if !defined(__EPOC32__) || !defined(__CPU_X86)
__NAKED__ TUint IntStackPtr()
	{
	asm("mrs r1, cpsr ");
	asm("bic r3, r1, #0x1f ");
#ifdef __MISA__
	asm("orr r3, r3, #0xd1 ");		// mode_fiq, all interrupts off
#else
	asm("orr r3, r3, #0xd2 ");		// mode_irq, all interrupts off
#endif
	asm("msr cpsr, r3 ");
	asm("mov r0, sp ");				// r0=sp_irq or sp_fiq
	asm("msr cpsr, r1 ");			// restore interrupts
	__JUMP(,lr);
	}
#endif

#ifdef __CAPTURE_EXTRAS
#include <arm.h>

__NAKED__ void CaptureExtras(SLatencyResults&)
	{
	asm("mrs r1, spsr ");			// r1=interrupted mode
	asm("mrs r2, cpsr ");			// r2=current PSR
	asm("tst r1, #0x0f ");			// check if we interrupted user mode
	asm("orr ip, r1, #%a0" : : "i" ((TInt)KAllInterruptsMask));		// ip=interrupted mode with interrupts off
	asm("orreq ip, ip, #0x1f ");	// if we interrupted user mode, go to system mode instead
	asm("bic ip, ip, #0x20 ");		// make sure we don't go into THUMB mode
	asm("msr cpsr, ip ");			// switch to interrupted mode with ints off
	asm("mov r3, lr ");				// r3=interrupted mode R14
	asm("msr cpsr, r2 ");			// back to interrupt mode
	asm("str r1, [r0, #%a0]" : : "i" _FOFF(SLatencyResults,iIntSpsr));
	asm("str r3, [r0, #%a0]" : : "i" _FOFF(SLatencyResults,iIntR14));
	__JUMP(,lr);
	}
#endif
#endif	// __SMP__

#if defined (__MISA__) || defined (__MCOT__)
__NAKED__ void DLatency::MsCallBack(TAny* aPtr)
	{
	asm("ldr ip, __KHwBaseOst");
	asm("ldr r3, [r0, #%a0]" : : "i" _FOFF(DLatency,iTickIncrement));
	asm("ldr r1, [ip, #0x10] ");		// r1=OSCR
	asm("ldr r2, [ip, #0x00] ");		// r2=OSMR0
	asm("sub r1, r1, r2 ");				// r1=int latency in ticks
	asm("str r1, [r0, #%a0]" : : "i" _FOFF(DLatency,iResults.iIntTicks));
	asm("str r2, [r0, #%a0]" : : "i" _FOFF(DLatency,iTriggerTime));
	asm("add r2, r2, r3 ");				// add increment to OSMR0
	asm("ldr r1, [r0, #%a0]" : : "i" _FOFF(DLatency,iIntStackTop));
	asm("ldrb r3, [r0, #%a0]" : : "i" _FOFF(DLatency,iOff));
	asm("str r2, [ip, #0x00] ");
	asm("ldr r1, [r1, #-4] ");			// r1=interrupt return address
	asm("mov r2, #1 ");
	asm("cmp r3, #0 ");
	asm("str r1, [r0, #%a0]" : : "i" _FOFF(DLatency,iResults.iIntRetAddr));
	asm("str r2, [ip, #0x14] ");		// clear interrupt
	asm("add r0, r0, #%a0" : : "i" _FOFF(DLatency,iMsDfc));
	asm("beq Add__4TDfc ");
	__JUMP(,lr);

	asm("__KHwBaseOst: ");	//OS timer register locations
#ifdef __MISA__
	#ifdef __MEMMODEL_DIRECT__
		asm(".word 0x90000000");		//Assabet direct MM
	#else
		asm(".word 0x63008000");		//Assabet non-direct MM
	#endif
#else
	#ifdef __MEMMODEL_DIRECT__
		asm(".word 0x40A00000");		//Lubbock direct MM
	#else
		asm(".word 0x6300A000");		//Lubbock non-direct MM
	#endif
#endif
	}
#endif