/*
* Copyright (c) 2008-2009 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:  
* naviengine_assp\uart\uart16550.cia
* PDD for 16550 UART - ARM assembler bits
*
*/



#include <comm.h>
#include <assp.h>
#include "uart16550_ne.h"
#include <e32hal.h>

__NAKED__ void T16550Uart::ModifyFCR(TUint /*aClearMask*/, TUint /*aSetMask*/)
	{
	asm("mrs ip, cpsr ");
	asm("orr r3, ip, #0xc0 ");
	asm("msr cpsr, r3 ");
	asm("ldrb r3, [r0, #4] ");
	asm("bic r3, r3, r1 ");
	asm("ldr r1, [r0, #0] ");
	asm("orr r3, r3, r2 ");
	asm("strb r3, [r0, #4] ");
	asm("strb r3, [r1, #%a0]" : : "i" ((TInt)K16550FCROffset));
	asm("msr cpsr, ip ");
	__JUMP(,lr);
	}

__NAKED__ void T16550Uart::ModifyLCR(TUint /*aClearMask*/, TUint /*aSetMask*/)
	{
	asm("mrs ip, cpsr ");
	asm("orr r3, ip, #0xc0 ");
	asm("msr cpsr, r3 ");
	asm("ldrb r3, [r0, #5] ");
	asm("bic r3, r3, r1 ");
	asm("ldr r1, [r0, #0] ");
	asm("orr r3, r3, r2 ");
	asm("strb r3, [r0, #5] ");
	asm("strb r3, [r1, #%a0]" : : "i" ((TInt)K16550LCROffset));
	asm("msr cpsr, ip ");
	__JUMP(,lr);
	}

__NAKED__ void T16550Uart::ModifyMCR(TUint /*aClearMask*/, TUint /*aSetMask*/)
	{
	asm("mrs ip, cpsr ");
	asm("orr r3, ip, #0xc0 ");
	asm("msr cpsr, r3 ");
	asm("ldrb r3, [r0, #6] ");
	asm("bic r3, r3, r1 ");
	asm("ldr r1, [r0, #0] ");
	asm("orr r3, r3, r2 ");
	asm("strb r3, [r0, #6] ");
	asm("strb r3, [r1, #%a0]" : : "i" ((TInt)K16550MCROffset));
	asm("msr cpsr, ip ");
	__JUMP(,lr);
	}

__NAKED__ void T16550Uart::ModifyIER(TUint /*aClearMask*/, TUint /*aSetMask*/)
	{
	asm("mrs ip, cpsr ");
	asm("orr r3, ip, #0xc0 ");
	asm("msr cpsr, r3 ");
	asm("ldrb r3, [r0, #7] ");
	asm("bic r3, r3, r1 ");
	asm("ldr r1, [r0, #0] ");
	asm("orr r3, r3, r2 ");
	asm("strb r3, [r0, #7] ");
	asm("strb r3, [r1, #%a0]" : : "i" ((TInt)K16550IEROffset));
	asm("msr cpsr, ip ");
	__JUMP(,lr);
	}

__NAKED__ void T16550Uart::SetFCR(TUint /*aValue*/)
	{
	asm("mrs ip, cpsr ");
	asm("ldr r3, [r0, #0] ");
	asm("orr r2, ip, #0xc0 ");
	asm("msr cpsr, r2 ");
	asm("strb r1, [r0, #4] ");
	asm("strb r1, [r3, #%a0]" : : "i" ((TInt)K16550FCROffset));
	asm("msr cpsr, ip ");
	__JUMP(,lr);
	}

__NAKED__ void T16550Uart::SetLCR(TUint /*aValue*/)
	{
	asm("mrs ip, cpsr ");
	asm("ldr r3, [r0, #0] ");
	asm("orr r2, ip, #0xc0 ");
	asm("msr cpsr, r2 ");
	asm("strb r1, [r0, #5] ");
	asm("strb r1, [r3, #%a0]" : : "i" ((TInt)K16550LCROffset));
	asm("msr cpsr, ip ");
	__JUMP(,lr);
	}

__NAKED__ void T16550Uart::SetMCR(TUint /*aValue*/)
	{
	asm("mrs ip, cpsr ");
	asm("ldr r3, [r0, #0] ");
	asm("orr r2, ip, #0xc0 ");
	asm("msr cpsr, r2 ");
	asm("strb r1, [r0, #6] ");
	asm("strb r1, [r3, #%a0]" : : "i" ((TInt)K16550MCROffset));
	asm("msr cpsr, ip ");
	__JUMP(,lr);
	}

__NAKED__ void T16550Uart::SetIER(TUint /*aValue*/)
	{
	asm("mrs ip, cpsr ");
	asm("ldr r3, [r0, #0] ");
	asm("orr r2, ip, #0xc0 ");
	asm("msr cpsr, r2 ");
	asm("strb r1, [r0, #7] ");
	asm("strb r1, [r3, #%a0]" : : "i" ((TInt)K16550IEROffset));
	asm("msr cpsr, ip ");
	__JUMP(,lr);
	}