StackSlotManager.hpp

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/* src/vm/jit/compiler2/StackSlotManager.hpp - StackSlotManager

   Copyright (C) 2013
   CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO

   This file is part of CACAO.

   This program 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, or (at
   your option) any later version.

   This program 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 this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
   02110-1301, USA.

*/

#ifndef _JIT_COMPILER2_STACKSLOTMANAGER
#define _JIT_COMPILER2_STACKSLOTMANAGER

#include "vm/jit/compiler2/Type.hpp"
#include "vm/types.hpp"

#include "vm/jit/compiler2/alloc/map.hpp"

namespace cacao {
namespace jit {
namespace compiler2 {

// forward declaration
class ManagedStackSlot;
class StackSlot;

/**
 * StackSlot Manager.
 *
 * The StackSlot Manger is used to manage slote for spilled registers
 * etc.
 */
class StackSlotManager {
private:
    typedef alloc::map<ManagedStackSlot*,StackSlot*>::type StackSlotListTy;
    StackSlotListTy slots;
    s4 counter;
public:
    StackSlotManager() : counter(1) {}
    ~StackSlotManager();

    /**
     * create a new managed stack slot
     */
    ManagedStackSlot* create_ManagedStackSlot(Type::TypeID type);

    /**
     * get the size of the stack frame in bytes
     */
    u4 get_frame_size() const;

    /**
     * get a stack slot from a managed stack slot
     */
    StackSlot* get_StackSlot(ManagedStackSlot* MSS);
};

} // end namespace compiler2
} // end namespace jit
} // end namespace cacao

#endif /* _JIT_COMPILER2_STACKSLOTMANAGER */


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