UniversalFunctionUnit.hh

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/*
    Copyright (c) 2002-2009 Tampere University.
 
    This file is part of TTA-Based Codesign Environment (TCE).
 
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/**
 * @file UniversalFunctionUnit.hh
 *
 * Declaration of UniversalFunctionUnit class.
 *
 * @author Lasse Laasonen 2004 (lasse.laasonen-no.spam-tut.fi)
 * @note rating: yellow
 */
 
#ifndef TTA_UNIVERSAL_FUNCTION_UNIT_HH
#define TTA_UNIVERSAL_FUNCTION_UNIT_HH
 
#include "FunctionUnit.hh"
 
class Operation;
class OperationPool;
class SmartHWOperation;
 
namespace TTAMachine {
    class HWOperation;
}
/**
 * UniversalFunctionUnit class represents a function unit which has
 * all the operations of an operation pool. The operations are added
 * on demand, not at construction.
 */
class UniversalFunctionUnit : public TTAMachine::FunctionUnit {
public:
    UniversalFunctionUnit(const std::string& name, OperationPool& opPool);
    virtual ~UniversalFunctionUnit();
 
    virtual bool hasOperation(const std::string& name) const;
    virtual TTAMachine::HWOperation* operation(const std::string& name) const;
    virtual void addPipelineElement(TTAMachine::PipelineElement& element);
    virtual void loadState(const ObjectState* state);
 
    int portCountWithWidth(int width) const;
    TTAMachine::FUPort& portWithWidth(int index, int width) const;
 
    static bool is32BitOperation(const std::string& opName);
 
    /// Name of the 32 bit wide opcode setting port.
    static const std::string OC_SETTING_PORT_32;
    /// Name of the 64 bit wide opcode setting port.
    static const std::string OC_SETTING_PORT_64;
 
private:
    SmartHWOperation& addSupportedOperation(const Operation& operation);
    void ensureInputPorts(int width, int count);
    void ensureOutputPorts(int width, int count);
 
    /// Operation pool from which the operations are searched.
    OperationPool& opPool_;
    /// Table of names of 32 bit operations
    static const std::string OPERATIONS_OF_32_BITS[];
 
 
};
 
#endif