InstructionMemory.cc

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/*
    Copyright (c) 2002-2016 Tampere University.
 
    This file is part of TTA-Based Codesign Environment (TCE).
 
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/**
 * @file InstructionMemory.cc
 *
 * Definition of InstructionMemory class.
 *
 * @author Jussi Nykänen 2004 (nykanen-no.spam-cs.tut.fi)
 * @author Pekka Jääskeläinen 2005,2016 (pjaaskel-no.spam-cs.tut.fi)
 * @note rating: red
 */
 
#include "InstructionMemory.hh"
#include "ExecutableInstruction.hh"
#include "SequenceTools.hh"
#include "Application.hh"
#include "Conversion.hh"
 
/**
 * Constructor.
 *
 * This constructor is for constant width instructions only.
 *
 * @param startAddress The starting address of the instruction memory.
 */
InstructionMemory::InstructionMemory(
    InstructionAddress startAddress) : 
    startAddress_(startAddress) {
}
 
/**
 * Destructor.
 */
InstructionMemory::~InstructionMemory() {
 
    for (InstructionContainer::const_iterator i = instructions_.begin();
         i != instructions_.end();  ++i) {
        delete (*i);
    }
    instructions_.clear();
 
    for (auto Pair : implicitInstructions_) {
        InstructionContainer* C = Pair.second;
        delete C;
    }
    implicitInstructions_.clear();
}
 
/**
 * Adds new ExecutableInstruction to memory.
 *
 * @param instruction Instruction to be added.
 */
void
InstructionMemory::addExecutableInstruction(
    InstructionAddress addr, ExecutableInstruction* instruction) {
 
    instructions_.push_back(instruction);
    instructionMap_[addr] = instruction;
}
 
/**
 * Adds an "implicit instruction" used to simulate effects triggered
 * by operation-triggered instructions as side-effects, but which are
 * not controlled by the programmer.
 *
 * Should be added after the explicit instruction in the order of
 * how the effects should be done.
 */
void
InstructionMemory::addImplicitExecutableInstruction(
    InstructionAddress addr, ExecutableInstruction* instruction) {
    if (implicitInstructions_.find(addr) == implicitInstructions_.end()) {
        implicitInstructions_[addr] = new InstructionContainer;
    }
    implicitInstructions_[addr]->push_back(instruction);
}
 
/**
 * Resets execution counters of all instructions.
 *
 */
void
InstructionMemory::resetExecutionCounts() {
    for (InstructionContainer::iterator i = instructions_.begin();
         i != instructions_.end(); ++i) {
        (*i)->resetExecutionCounts();
    }
}
 
/**
 * Returns true in case there is an implicit or explicit instruction
 * at the given address.
 */
bool
InstructionMemory::hasInstructionAt(InstructionAddress addr) const {
    return instructionMap_.find(addr) != instructionMap_.end();
}
 
 
bool
InstructionMemory::hasImplicitInstructionsAt(InstructionAddress addr) const {
    return implicitInstructions_.find(addr) != implicitInstructions_.end();
}
 
const InstructionMemory::InstructionContainer&
InstructionMemory::implicitInstructionsAt(InstructionAddress addr) const {
    if (implicitInstructions_.find(addr) == implicitInstructions_.end()) {
        return emptyInstructions_;
    }
 
    const InstructionContainer* IC = implicitInstructions_.find(addr)->second;
    return *IC;
}