TPEFLineNumSectionWriter.cc

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/*
    Copyright (c) 2002-2009 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 rights to use, copy, modify, merge, publish, distribute, sublicense,
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    Software is furnished to do so, subject to the following conditions:
 
    The above copyright notice and this permission notice shall be included in
    all copies or substantial portions of the Software.
 
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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/**
 * @file TPEFLineNumSectionWriter.cc
 *
 * Definition of TPEFLineNumSectionWriter class.
 *
 * @author Mikael Lepistö 2004 (tmlepist-no.spam-cs.tut.fi)
 *
 * @note rating: yellow
 */
 
#include <list>
 
#include "TPEFLineNumSectionWriter.hh"
#include "SafePointer.hh"
#include "ReferenceKey.hh"
#include "SectionElement.hh"
#include "LineNumSection.hh"
#include "LineNumProcedure.hh"
#include "LineNumElement.hh"
#include "SectionSizeReplacer.hh"
#include "SectionOffsetReplacer.hh"
#include "SectionIndexReplacer.hh"
#include "SectionIdReplacer.hh"
#include "BinaryStream.hh"
 
namespace TPEF {
 
using std::list;
 
using ReferenceManager::SafePointer;
using ReferenceManager::SectionKey;
using ReferenceManager::FileOffsetKey;
using ReferenceManager::SectionIndexKey;
 
const TPEFLineNumSectionWriter TPEFLineNumSectionWriter::instance_;
const Word TPEFLineNumSectionWriter::elementSize_ = 6;
 
/**
 * Constructor.
 *
 * Registers itself to SectionWriter.
 */
TPEFLineNumSectionWriter::TPEFLineNumSectionWriter() : TPEFSectionWriter() {
    registerSectionWriter(this);
}
 
/**
 * Destructor.
 */
TPEFLineNumSectionWriter::~TPEFLineNumSectionWriter() {
}
 
/**
 * Returns the section type this writer can write.
 *
 * @return The section type writer can write.
 */
Section::SectionType
TPEFLineNumSectionWriter::type() const {
    return Section::ST_LINENO;
}
 
/**
 * Writes the data of the section in to stream.
 *
 * @param stream The stream to be written to.
 * @param sect The section to be written.
 */
void
TPEFLineNumSectionWriter::actualWriteData(
    BinaryStream& stream,
    const Section* sect) const {
 
    FileOffset startOffset = stream.writePosition();
    // file offset to data of section
    SafePointer::addObjectReference(
        FileOffsetKey(startOffset), sect->element(0));
 
    for (Word i = 0; i < sect->elementCount(); i++) {
        LineNumProcedure* elem =
            dynamic_cast<LineNumProcedure*>(sect->element(i));
        assert(elem != NULL);
 
        if (elem->procedureSymbol() != NULL) {
            SectionIndexReplacer
                replacer(elem->procedureSymbol(), sizeof(Word));
            replacer.resolve();
        } else {
            bool procedureSymbolMustBeSet = false;
            assert(procedureSymbolMustBeSet);
        }
 
        // line number zero represents procedure
        stream.writeHalfWord(0);
 
        // write line nums...
        for(Word lineIndex = 0; lineIndex < elem->lineCount(); lineIndex++) {
 
            const LineNumElement* lineElem = elem->line(lineIndex);
 
            // write each line
            SectionOffsetReplacer replacer(lineElem->instruction());
            replacer.resolve();
            stream.writeHalfWord(lineElem->lineNumber());
        }
    }
    SectionSizeReplacer::setSize(sect, stream.writePosition() - startOffset);
}
 
/**
 * Returns the fixed size length of section elements.
 *
 * @return The fixed size length of section elements.
 */
Word
TPEFLineNumSectionWriter::elementSize(const Section* /*section*/) const {
    return elementSize_;
}
 
/**
 * Writes Info field of section header.
 *
 * @param stream The stream where to write.
 * @param sect Section to write.
 */
void
TPEFLineNumSectionWriter::writeInfo(
    BinaryStream& stream, const Section* sect) const {
 
    const Section* codeSection =
        dynamic_cast<const LineNumSection*>(sect)->codeSection();
 
    SectionIdReplacer idReplacer(codeSection);
    idReplacer.resolve();
 
    stream.writeHalfWord(0);
}
 
}