SymbolAddressCommand.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
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/**
 * @file SymbolAddressCommand.cc
 *
 * Implementation of SymbolAddressCommand class
 *
 * @author Pekka Jääskeläinen 2008 (pjaaskel-no.spam-cs.tut.fi)
 * @note rating: red
 */
 
#include "SymbolAddressCommand.hh"
#include "SimulatorFrontend.hh"
#include "MemorySystem.hh"
#include "SimulatorToolbox.hh"
#include "Memory.hh"
#include "StringTools.hh"
#include "Address.hh"
#include "NullAddressSpace.hh"
#include "SimValue.hh"
#include "GlobalScope.hh"
#include "DataLabel.hh"
#include "Program.hh"
 
#include <iostream>
 
/**
 * Constructor.
 *
 * Sets the name of the command to the base class.
 */
SymbolAddressCommand::SymbolAddressCommand() : 
    SimControlLanguageCommand("symbol_address") {
}
 
/**
 * Destructor.
 *
 * Does nothing.
 */
SymbolAddressCommand::~SymbolAddressCommand() {
}
 
/**
 * Executes the "symbol_address" command.
 *
 * Prints the address of a data symbol.
 *
 * @param arguments The symbol to print.
 * @return True in case simulation is initialized and arguments are ok.
 * @exception NumberFormatException Is never thrown by this command.
 */
bool
SymbolAddressCommand::execute(const std::vector<DataObject>& arguments) {
    const int argumentCount = arguments.size() - 1;
    if (!checkArgumentCount(argumentCount, 1, 1)) {
        return false;
    } 
 
    if (!checkProgramLoaded()) {
        return false;
    }
 
    const TTAProgram::GlobalScope& globalScope = 
        simulatorFrontend().program().globalScopeConst();        
    try {
        TTAProgram::Address address =
            globalScope.dataLabel(arguments.at(1).stringValue()).address();
        interpreter()->setResult(static_cast<int>(address.location()));
        interpreter()->setError(false);
        return true;
    } catch (const KeyNotFound&) {
        // couldn't evaluate the label 
        interpreter()->setResult(
            "Symbol not found. Try adding '_' prefix to the symbol, "
            "e.g. '_foo'.");
        interpreter()->setError(true);
        return false;
    }
}
 
/**
 * Returns the help text for this command.
 * 
 * Help text is searched from SimulatorTextGenerator.
 *
 * @return The help text.
 */
std::string 
SymbolAddressCommand::helpText() const {
    return "Returns the address of the given data symbol (global variable).";
}