VhdlImageWriter.cc

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/*
    Copyright (c) 2002-2010 Tampere University.
 
    This file is part of TTA-Based Codesign Environment (TCE).
 
    Permission is hereby granted, free of charge, to any person obtaining a
    copy of this software and associated documentation files (the "Software"),
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    The above copyright notice and this permission notice shall be included in
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    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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/**
 * @file VhdlImageWriter.cc
 *
 * Implementation of VhdlImageWriter class.
 *
 * @author Otto Esko 2010 (otto.esko-no.spam-tut.fi)
 * @note rating: red
 */
 
#include <iostream>
#include "InstructionBitVector.hh"
#include "ArrayImageWriter.hh"
#include "VhdlImageWriter.hh"
using std::endl;
 
/**
 * The constructor.
 *
 * @param bits The bits to write.
 * @param rowLength Length of the rows to write.
 */
VhdlImageWriter::VhdlImageWriter(
    const BitVector& bits,
    int rowLength,
    const std::string& entityName) : 
    ArrayImageWriter(bits, rowLength), entityName_(entityName) {
}
 
/**
 * The destructor.
 */
VhdlImageWriter::~VhdlImageWriter() {
}
 
/**
 * Writes the bit image to the given stream.
 *
 * @param stream The stream to write.
 */
void VhdlImageWriter::writeImage(std::ostream& stream) const {
    writeHeader(stream);
    ArrayImageWriter::writeImage(stream);
    writeEnding(stream);
}
 
 
/**
 * Writes the vhdl declaration stuff to the beginning of the stream
 */
void VhdlImageWriter::writeHeader(std::ostream& stream) const {
    stream << "library ieee;" << endl
           << "use ieee.std_logic_1164.all;" << endl
           << "use ieee.std_logic_arith.all;" << endl << endl;
 
    stream << "package " << packageName() << " is" << endl << endl
           << "  type std_logic_dmem_matrix is array (natural range <>) of "
           << "std_logic_vector(" << rowLength() << "-1 downto 0);" 
           << endl << endl;
 
    stream << "  constant dmem_array : std_logic_dmem_matrix := (" << endl;
}
 
/**
 * Writes the end declarations to the stream
 */
void VhdlImageWriter::writeEnding(std::ostream& stream) const {
    stream << ");" << endl << endl
           << "end " << packageName() << ";" << endl;
}
 
std::string
VhdlImageWriter::packageName() const {
    
    std::string package = "dmem_image";
    if (!entityName_.empty()) {
        package = entityName_ + "_" + package;
    }
    return package;
}