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////////////////////////////////////////////////////////////////////////////////////////
//
// Nestopia - NES/Famicom emulator written in C++
//
// Copyright (C) 2003-2008 Martin Freij
//
// This file is part of Nestopia.
//
// Nestopia is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// Nestopia is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Nestopia; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
////////////////////////////////////////////////////////////////////////////////////////
#ifndef NST_IO_ACCESSOR_H
#define NST_IO_ACCESSOR_H
#ifdef NST_PRAGMA_ONCE
#pragma once
#endif
namespace Nes
{
namespace Core
{
namespace Io
{
#ifdef NST_FASTDELEGATE
class Accessor
{
public:
template<typename T> struct Type
{
typedef Data (NST_FASTCALL T::*Function)(Address);
};
private:
class Component {};
typedef Type<Component>::Function Function;
Component* component;
Function function;
public:
Accessor() {}
template<typename T>
Accessor(T* c,typename Type<T>::Function f)
:
component ( reinterpret_cast<Component*>(c) ),
function ( reinterpret_cast<Function>(f) )
{
NST_COMPILE_ASSERT( sizeof(function) == sizeof(f) );
}
template<typename T>
void Set(T* c,typename Type<T>::Function f)
{
NST_COMPILE_ASSERT( sizeof(function) == sizeof(f) );
component = reinterpret_cast<Component*>(c);
function = reinterpret_cast<Function>(f);
}
Data Fetch(Address address) const
{
return (*component.*function)( address );
}
};
#define NES_DECL_ACCESSOR(a_) Data NST_FASTCALL Access_##a_(Address)
#define NES_ACCESSOR(o_,a_) Data NST_FASTCALL o_::Access_##a_(Address address)
#else
class Accessor
{
typedef void* Component;
typedef Data (NST_REGCALL *Function)(Component,Address);
Component component;
Function function;
public:
Accessor() {}
Accessor(Component c,Function t)
:
component ( c ),
function ( t )
{}
void Set(Component c,Function t)
{
component = c;
function = t;
}
Data Fetch(Address address) const
{
return function( component, address );
}
template<typename T> struct Type
{
typedef Data (NST_REGCALL *Function)(Component,Address);
};
};
#define NES_DECL_ACCESSOR(a_) \
\
NST_SINGLE_CALL Data NST_FASTCALL Access_M_##a_(Address); \
static NST_NO_INLINE Data NST_REGCALL Access_##a_(void*,Address)
#define NES_ACCESSOR(o_,a_) \
\
NST_NO_INLINE Data NST_REGCALL o_::Access_##a_(void* p_,Address i_) \
{ \
return static_cast<o_*>(p_)->Access_M_##a_(i_); \
} \
\
NST_SINGLE_CALL Data NST_FASTCALL o_::Access_M_##a_(Address address)
#endif
}
}
}
#endif
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