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Annotation of nono/vm/xiospace.h, revision 1.1.1.3

1.1       root        1: //
                      2: // nono
1.1.1.3 ! root        3: // Copyright (C) 2020 nono project
        !             4: // Licensed under nono-license.txt
1.1       root        5: //
                      6: 
                      7: #pragma once
                      8: 
                      9: #include "device.h"
                     10: 
                     11: class XIOSpaceDevice
                     12:        : public IODevice
                     13: {
1.1.1.3 ! root       14:        using inherited = IODevice;
1.1       root       15:  public:
                     16:        XIOSpaceDevice();
1.1.1.3 ! root       17:        ~XIOSpaceDevice() override;
1.1       root       18: 
1.1.1.3 ! root       19:        uint64 Read8(uint32 addr) override;
        !            20:        uint64 Read16(uint32 addr) override;
        !            21:        uint64 Read32(uint32 addr) override;
        !            22:        uint64 Write8(uint32 addr, uint32 data) override;
        !            23:        uint64 Write16(uint32 addr, uint32 data) override;
        !            24:        uint64 Write32(uint32 addr, uint32 data) override;
        !            25:        uint64 Peek8(uint32 addr) override;
1.1       root       26: 
                     27:  private:
                     28:        // アドレス addr に対応する IODevice* を返す。
                     29:        // addr は 24bit マスクされていること。
1.1.1.2   root       30:        inline IODevice *SearchDevice(uint32 addr) const
1.1       root       31:        {
                     32:                uint idx = addr / 8192;
                     33:                __assume(idx < 2048);
                     34:                return table[idx];
                     35:        }
                     36: 
                     37:        void AddDevice(IODevice *dev);
                     38: 
                     39:        IODevice *table[2048] {};
                     40: };

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