TPEFDebugSectionReader.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 TPEFDebugSectionReader.cc
 *
 * Definition of TPEFDebugSectionReader class.
 *
 * @author Mikael Lepistö 2003 (tmlepist-no.spam-cs.tut.fi)
 *
 * @note rating: yellow
 */
 
#include "TPEFDebugSectionReader.hh"
#include "SafePointer.hh"
#include "Exception.hh"
#include "ReferenceKey.hh"
#include "SectionReader.hh"
#include "TPEFBaseType.hh"
#include "DebugSection.hh"
#include "DebugStabElem.hh"
#include "BinaryStream.hh"
 
 
namespace TPEF {
 
using ReferenceManager::SafePointer;
using ReferenceManager::SectionIndexKey;
using ReferenceManager::SectionOffsetKey;
using ReferenceManager::SectionKey;
 
TPEFDebugSectionReader TPEFDebugSectionReader::proto_;
 
/**
 * Constructor.
 *
 * Registers itself to SectionReader.
 */
TPEFDebugSectionReader::TPEFDebugSectionReader() : TPEFSectionReader() {
    SectionReader::registerSectionReader(this);
}
 
/**
 * Destructor.
 */
TPEFDebugSectionReader::~TPEFDebugSectionReader() {
}
 
/**
 * Returns the type of section it is meant to read.
 *
 * @return The type of section it can read.
 */
Section::SectionType
TPEFDebugSectionReader::type() const {
    return Section::ST_DEBUG;
}
 
/**
 * Reads section data from TPEF binary file.
 *
 * @param stream Stream to be read from.
 * @param section Section where the information is to be stored.
 * @exception UnreachableStream If reading of section fails.
 * @exception KeyAlreadyExists Key was in use when trying to register object.
 * @exception EndOfFile If end of file were reached while it shouldn't.
 * @exception OutOfRange Some of read value were out of range.
 * @exception WrongSubclass Some class couldn't do what it was asked for.
 * @exception UnexpectedValue If there was unexpected value when reading.
 */
void
TPEFDebugSectionReader::readData(BinaryStream& stream, Section* section) const {
    // size taken by fields common to any type of debug section element
    const std::size_t BASE_ELEM_SIZE = 10;
 
    // base classes implementation must be called with these.
    TPEFSectionReader::readData(stream, section);
 
    DebugSection* debugSection =
        dynamic_cast<DebugSection*>(section);
    assert(debugSection != NULL);
 
    // check that link section is defined properly
    assert(header().linkId != 0);
 
    if (!section->noBits()) {
        // start of first element
        SectionOffset currElement = header().bodyOffset;
 
        while (currElement < header().bodyOffset + header().bodyLength) {
 
            HalfWord type = stream.readHalfWord();
            Word stringOffset = stream.readWord();
            Word size = stream.readWord();
 
            std::vector<Byte> data;
 
            for (unsigned i = 0; i < size; i++) {
                data.push_back(stream.readByte());
            }
 
            DebugElement* newElem = NULL;
 
            switch (static_cast<DebugElement::ElementType>(type)) {
            case DebugElement::DE_STAB:
                newElem = new DebugStabElem(data);
                break;
            default:
                throw UnexpectedValue(
                    __FILE__, __LINE__, __func__,
                    "Unknown debug element type: " +
                    Conversion::toString(type));
            }
 
            // set name string for element
            SectionOffsetKey sOffKey(header().linkId, stringOffset);
            newElem->setDebugString(CREATE_SAFEPOINTER(sOffKey));
 
            section->addElement(newElem);
 
            currElement += size + BASE_ELEM_SIZE;
            stream.setReadPosition(currElement);
        }
    }
}
 
} // namespace TPEF