kerneltest/e32test/system/d_mstim.cia
author Mike Kinghan <mikek@symbian.org>
Thu, 25 Nov 2010 14:35:45 +0000
branchGCC_SURGE
changeset 305 1ba12ef4ef89
parent 0 a41df078684a
permissions -rw-r--r--
Enhance the base/rom extension to generate the symbol file of the rom built. The symbol file is placed in epoc32/rom/<baseport_name>, along with the rom log and final oby file.
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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#include "plat_priv.h"
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#include "d_mstim.h"
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#if defined(__X86__)
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typedef TUint TCounter;
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TUint32* TickCountPtr;
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const TLinAddr NTimerQ_TimerAddress = (TLinAddr)&NTimerQ::TimerAddress;
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__NAKED__ TCounter TIMER()
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	{
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	asm("mov eax, [%a0]": :"i"(&TickCountPtr));
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	asm("pushfd");
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	asm("mov eax, [eax]");
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	asm("cli");
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	asm("shl eax, 16");
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	asm("mov al, 0x80");	// channel 2 latch cmd
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	asm("out 0x43, al");
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	asm("in al, 0x42");		// get ls byte
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	asm("mov ah, al");
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	asm("in al, 0x42");		// get ms byte
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	asm("xchg al, ah");
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	asm("popfd");
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	asm("ret");
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	}
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__NAKED__ void SetUpTimerChannel2()
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	{
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	asm("pushfd");
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	asm("cli");
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	asm("in al, 0x61");
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	asm("and al, 0xfc");	// disable speaker
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	asm("or al, 1");		// enable timer channel 2
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	asm("out 0x61, al");
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	asm("mov al, 0xb4");
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	asm("out 0x43, al");	// timer chan 2 mode 2
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	asm("mov al, 0");
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	asm("out 0x42, al");	// initial count 0 = free running
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	asm("out 0x42, al");
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	asm("popfd");
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	asm("call %a0": :"i"(NTimerQ_TimerAddress));
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	asm("lea eax, [eax+%0]": :"i"_FOFF(NTimerQ,iMsCount));
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	asm("mov [%a0], eax": :"i"(&TickCountPtr));
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	asm("ret");
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	}
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#endif