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Annotation of nono/vm/xiospace.h, revision 1.1

1.1     ! root        1: //
        !             2: // nono
        !             3: // Copyright (C) 2018 [email protected]
        !             4: //
        !             5: 
        !             6: #pragma once
        !             7: 
        !             8: #include "device.h"
        !             9: 
        !            10: class XIOSpaceDevice
        !            11:        : public IODevice
        !            12: {
        !            13:        typedef IODevice inherited;
        !            14:  public:
        !            15:        XIOSpaceDevice();
        !            16:        virtual ~XIOSpaceDevice();
        !            17: 
        !            18:        virtual uint64 Read8(uint32 addr);
        !            19:        virtual uint64 Read16(uint32 addr);
        !            20:        virtual uint64 Read32(uint32 addr);
        !            21:        virtual uint64 Write8(uint32 addr, uint32 data);
        !            22:        virtual uint64 Write16(uint32 addr, uint32 data);
        !            23:        virtual uint64 Write32(uint32 addr, uint32 data);
        !            24:        virtual uint64 Peek8(uint32 addr);
        !            25: 
        !            26:  private:
        !            27:        // アドレス addr に対応する IODevice* を返す。
        !            28:        // addr は 24bit マスクされていること。
        !            29:        inline IODevice *SearchDevice(uint32 addr)
        !            30:        {
        !            31:                uint idx = addr / 8192;
        !            32:                __assume(idx < 2048);
        !            33:                return table[idx];
        !            34:        }
        !            35: 
        !            36:        void AddDevice(IODevice *dev);
        !            37: 
        !            38:        IODevice *table[2048] {};
        !            39: };

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