port_proxy.hh

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/*
 * Copyright (c) 2011-2013 ARM Limited
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 *
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 * not be construed as granting a license to any other intellectual
 * property including but not limited to intellectual property relating
 * to a hardware implementation of the functionality of the software
 * licensed hereunder.  You may use the software subject to the license
 * terms below provided that you ensure that this notice is replicated
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 * modified or unmodified, in source code or in binary form.
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 * Authors: Andreas Hansson
 */

#ifndef __MEM_PORT_PROXY_HH__
#define __MEM_PORT_PROXY_HH__

#include "config/the_isa.hh"
#if THE_ISA != NULL_ISA
    #include "arch/isa_traits.hh"
#endif

#include "mem/port.hh"
#include "sim/byteswap.hh"

class PortProxy
{
  private:

    MasterPort &_port;

    const unsigned int _cacheLineSize;

  public:
    PortProxy(MasterPort &port, unsigned int cacheLineSize) :
        _port(port), _cacheLineSize(cacheLineSize) { }
    virtual ~PortProxy() { }

    virtual void readBlob(Addr addr, uint8_t* p, int size) const;

    virtual void writeBlob(Addr addr, const uint8_t* p, int size) const;

    virtual void memsetBlob(Addr addr, uint8_t v, int size) const;

    template <typename T>
    T read(Addr address) const;

    template <typename T>
    void write(Addr address, T data) const;

#if THE_ISA != NULL_ISA

    template <typename T>
    T readGtoH(Addr address) const;

    template <typename T>
    void writeHtoG(Addr address, T data) const;
#endif
};


template <typename T>
T
PortProxy::read(Addr address) const
{
    T data;
    readBlob(address, (uint8_t*)&data, sizeof(T));
    return data;
}

template <typename T>
void
PortProxy::write(Addr address, T data) const
{
    writeBlob(address, (uint8_t*)&data, sizeof(T));
}

#if THE_ISA != NULL_ISA
template <typename T>
T
PortProxy::readGtoH(Addr address) const
{
    T data;
    readBlob(address, (uint8_t*)&data, sizeof(T));
    return TheISA::gtoh(data);
}

template <typename T>
void
PortProxy::writeHtoG(Addr address, T data) const
{
    data = TheISA::htog(data);
    writeBlob(address, (uint8_t*)&data, sizeof(T));
}
#endif

#endif // __MEM_PORT_PROXY_HH__