StackSlotManager.cpp

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

*/

#include "vm/jit/compiler2/StackSlotManager.hpp"
#include "vm/jit/compiler2/MachineOperand.hpp"

namespace cacao {
namespace jit {
namespace compiler2 {

StackSlotManager::~StackSlotManager() {
    for( StackSlotListTy::iterator i = slots.begin(),
            e = slots.begin(); i != e; ) {
        delete i->first;
        delete i->second;
    }
}

ManagedStackSlot* StackSlotManager::create_ManagedStackSlot(Type::TypeID type) {
    ManagedStackSlot* mslot = new ManagedStackSlot(this, counter, type);
    slots.insert(std::make_pair(mslot, new StackSlot(-counter, type)));
    counter++;
    return mslot;
}

u4 StackSlotManager::get_frame_size() const {
    // TODO compress stack
    // for now we only us 8 byte slots
    return slots.size() * 8;
}

StackSlot* StackSlotManager::get_StackSlot(ManagedStackSlot* MSS) {
    StackSlotListTy::const_iterator i = slots.find(MSS);
    if (i == slots.end()) {
        return NULL;
    }
    return i->second;
}

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


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