kernel/eka/include/page_alloc.h
author William Roberts <williamr@symbian.org>
Tue, 06 Jul 2010 13:05:35 +0100
branchGCC_SURGE
changeset 195 3411883d8fcf
parent 167 b41fc9c39ca7
permissions -rw-r--r--
Add GCC inline assembler to generate the Symbian exception descriptor - bug 2921
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// Copyright (c) 1994-2009 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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// kernel\eka\include\page_alloc.h
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// 
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//
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#ifndef __KERNEL_MODE__ 
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const int MAXSMALLPAGEBITS = 68<<3;
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#define MINPAGEPOWER	((PAGESHIFT)+2)
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struct paged_bitmap
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{
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	public:
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		inline paged_bitmap() : iBase(0), iNbits(0) {}
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		void Init(unsigned char* p, unsigned size, unsigned bit);
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//
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		inline unsigned char* Addr() const;
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		inline unsigned Size() const;
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//
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		inline void Set(unsigned ix, unsigned bit);
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		inline unsigned operator[](unsigned ix) const;
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		bool Is(unsigned ix, unsigned len, unsigned bit) const;
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		void Set(unsigned ix, unsigned len, unsigned val);
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		void Setn(unsigned ix, unsigned len, unsigned bit);
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		unsigned Bits(unsigned ix, unsigned len) const;	// little endian
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		int Find(unsigned start, unsigned bit) const;
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	private:
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		unsigned char* iBase;
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		unsigned iNbits;
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};
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#endif  // __KERNEL_MODE__